fineui/dist/base.js

// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: http://codemirror.net/LICENSE

// This is CodeMirror (http://codemirror.net), a code editor
// implemented in JavaScript on top of the browser's DOM.
//
// You can find some technical background for some of the code below
// at http://marijnhaverbeke.nl/blog/#cm-internals .

(function(mod) {
    this.CodeMirror = mod();
})(function() {
  "use strict";

  // BROWSER SNIFFING

  // Kludges for bugs and behavior differences that can't be feature
  // detected are enabled based on userAgent etc sniffing.

  var gecko = /gecko\/\d/i.test(navigator.userAgent);
  var ie_upto10 = /MSIE \d/.test(navigator.userAgent);
  var ie_11up = /Trident\/(?:[7-9]|\d{2,})\..*rv:(\d+)/.exec(navigator.userAgent);
  var ie = ie_upto10 || ie_11up;
  var ie_version = ie && (ie_upto10 ? document.documentMode || 6 : ie_11up[1]);
  var webkit = /WebKit\//.test(navigator.userAgent);
  var qtwebkit = webkit && /Qt\/\d+\.\d+/.test(navigator.userAgent);
  var chrome = /Chrome\//.test(navigator.userAgent);
  var presto = /Opera\//.test(navigator.userAgent);
  var safari = /Apple Computer/.test(navigator.vendor);
  var mac_geMountainLion = /Mac OS X 1\d\D([8-9]|\d\d)\D/.test(navigator.userAgent);
  var phantom = /PhantomJS/.test(navigator.userAgent);

  var ios = /AppleWebKit/.test(navigator.userAgent) && /Mobile\/\w+/.test(navigator.userAgent);
  // This is woefully incomplete. Suggestions for alternative methods welcome.
  var mobile = ios || /Android|webOS|BlackBerry|Opera Mini|Opera Mobi|IEMobile/i.test(navigator.userAgent);
  var mac = ios || /Mac/.test(navigator.platform);
  var windows = /win/i.test(navigator.platform);

  var presto_version = presto && navigator.userAgent.match(/Version\/(\d*\.\d*)/);
  if (presto_version) presto_version = Number(presto_version[1]);
  if (presto_version && presto_version >= 15) { presto = false; webkit = true; }
  // Some browsers use the wrong event properties to signal cmd/ctrl on OS X
  var flipCtrlCmd = mac && (qtwebkit || presto && (presto_version == null || presto_version < 12.11));
  var captureRightClick = gecko || (ie && ie_version >= 9);

  // Optimize some code when these features are not used.
  var sawReadOnlySpans = false, sawCollapsedSpans = false;

  // EDITOR CONSTRUCTOR

  // A CodeMirror instance represents an editor. This is the object
  // that user code is usually dealing with.

  function CodeMirror(place, options) {
    if (!(this instanceof CodeMirror)) return new CodeMirror(place, options);

    this.options = options = options ? copyObj(options) : {};
    // Determine effective options based on given values and defaults.
    copyObj(defaults, options, false);
    setGuttersForLineNumbers(options);

    var doc = options.value;
    if (typeof doc == "string") doc = new Doc(doc, options.mode);
    this.doc = doc;

    var input = new CodeMirror.inputStyles[options.inputStyle](this);
    var display = this.display = new Display(place, doc, input);
    display.wrapper.CodeMirror = this;
    updateGutters(this);
    themeChanged(this);
    if (options.lineWrapping)
      this.display.wrapper.className += " CodeMirror-wrap";
    if (options.autofocus && !mobile) display.input.focus();
    initScrollbars(this);

    this.state = {
      keyMaps: [],  // stores maps added by addKeyMap
      overlays: [], // highlighting overlays, as added by addOverlay
      modeGen: 0,   // bumped when mode/overlay changes, used to invalidate highlighting info
      overwrite: false,
      delayingBlurEvent: false,
      focused: false,
      suppressEdits: false, // used to disable editing during key handlers when in readOnly mode
      pasteIncoming: false, cutIncoming: false, // help recognize paste/cut edits in input.poll
      draggingText: false,
      highlight: new Delayed(), // stores highlight worker timeout
      keySeq: null,  // Unfinished key sequence
      specialChars: null
    };

    var cm = this;

    // Override magic textarea content restore that IE sometimes does
    // on our hidden textarea on reload
    if (ie && ie_version < 11) setTimeout(function() { cm.display.input.reset(true); }, 20);

    registerEventHandlers(this);
    ensureGlobalHandlers();

    startOperation(this);
    this.curOp.forceUpdate = true;
    attachDoc(this, doc);

    if ((options.autofocus && !mobile) || cm.hasFocus())
      setTimeout(bind(onFocus, this), 20);
    else
      onBlur(this);

    for (var opt in optionHandlers) if (optionHandlers.hasOwnProperty(opt))
      optionHandlers[opt](this, options[opt], Init);
    maybeUpdateLineNumberWidth(this);
    if (options.finishInit) options.finishInit(this);
    for (var i = 0; i < initHooks.length; ++i) initHooks[i](this);
    endOperation(this);
    // Suppress optimizelegibility in Webkit, since it breaks text
    // measuring on line wrapping boundaries.
    if (webkit && options.lineWrapping &&
        getComputedStyle(display.lineDiv).textRendering == "optimizelegibility")
      display.lineDiv.style.textRendering = "auto";
  }

  // DISPLAY CONSTRUCTOR

  // The display handles the DOM integration, both for input reading
  // and content drawing. It holds references to DOM nodes and
  // display-related state.

  function Display(place, doc, input) {
    var d = this;
    this.input = input;

    // Covers bottom-right square when both scrollbars are present.
    d.scrollbarFiller = elt("div", null, "CodeMirror-scrollbar-filler");
    d.scrollbarFiller.setAttribute("cm-not-content", "true");
    // Covers bottom of gutter when coverGutterNextToScrollbar is on
    // and h scrollbar is present.
    d.gutterFiller = elt("div", null, "CodeMirror-gutter-filler");
    d.gutterFiller.setAttribute("cm-not-content", "true");
    // Will contain the actual code, positioned to cover the viewport.
    d.lineDiv = elt("div", null, "CodeMirror-code");
    // Elements are added to these to represent selection and cursors.
    d.selectionDiv = elt("div", null, null, "position: relative; z-index: 1");
    d.cursorDiv = elt("div", null, "CodeMirror-cursors");
    // A visibility: hidden element used to find the size of things.
    d.measure = elt("div", null, "CodeMirror-measure");
    // When lines outside of the viewport are measured, they are drawn in this.
    d.lineMeasure = elt("div", null, "CodeMirror-measure");
    // Wraps everything that needs to exist inside the vertically-padded coordinate system
    d.lineSpace = elt("div", [d.measure, d.lineMeasure, d.selectionDiv, d.cursorDiv, d.lineDiv],
                      null, "position: relative; outline: none");
    // Moved around its parent to cover visible view.
    d.mover = elt("div", [elt("div", [d.lineSpace], "CodeMirror-lines")], null, "position: relative");
    // Set to the height of the document, allowing scrolling.
    d.sizer = elt("div", [d.mover], "CodeMirror-sizer");
    d.sizerWidth = null;
    // Behavior of elts with overflow: auto and padding is
    // inconsistent across browsers. This is used to ensure the
    // scrollable area is big enough.
    d.heightForcer = elt("div", null, null, "position: absolute; height: " + scrollerGap + "px; width: 1px;");
    // Will contain the gutters, if any.
    d.gutters = elt("div", null, "CodeMirror-gutters");
    d.lineGutter = null;
    // Actual scrollable element.
    d.scroller = elt("div", [d.sizer, d.heightForcer, d.gutters], "CodeMirror-scroll");
    d.scroller.setAttribute("tabIndex", "-1");
    // The element in which the editor lives.
    d.wrapper = elt("div", [d.scrollbarFiller, d.gutterFiller, d.scroller], "CodeMirror");

    // Work around IE7 z-index bug (not perfect, hence IE7 not really being supported)
    if (ie && ie_version < 8) { d.gutters.style.zIndex = -1; d.scroller.style.paddingRight = 0; }
    if (!webkit && !(gecko && mobile)) d.scroller.draggable = true;

    if (place) {
      if (place.appendChild) place.appendChild(d.wrapper);
      else place(d.wrapper);
    }

    // Current rendered range (may be bigger than the view window).
    d.viewFrom = d.viewTo = doc.first;
    d.reportedViewFrom = d.reportedViewTo = doc.first;
    // Information about the rendered lines.
    d.view = [];
    d.renderedView = null;
    // Holds info about a single rendered line when it was rendered
    // for measurement, while not in view.
    d.externalMeasured = null;
    // Empty space (in pixels) above the view
    d.viewOffset = 0;
    d.lastWrapHeight = d.lastWrapWidth = 0;
    d.updateLineNumbers = null;

    d.nativeBarWidth = d.barHeight = d.barWidth = 0;
    d.scrollbarsClipped = false;

    // Used to only resize the line number gutter when necessary (when
    // the amount of lines crosses a boundary that makes its width change)
    d.lineNumWidth = d.lineNumInnerWidth = d.lineNumChars = null;
    // Set to true when a non-horizontal-scrolling line widget is
    // added. As an optimization, line widget aligning is skipped when
    // this is false.
    d.alignWidgets = false;

    d.cachedCharWidth = d.cachedTextHeight = d.cachedPaddingH = null;

    // Tracks the maximum line length so that the horizontal scrollbar
    // can be kept static when scrolling.
    d.maxLine = null;
    d.maxLineLength = 0;
    d.maxLineChanged = false;

    // Used for measuring wheel scrolling granularity
    d.wheelDX = d.wheelDY = d.wheelStartX = d.wheelStartY = null;

    // True when shift is held down.
    d.shift = false;

    // Used to track whether anything happened since the context menu
    // was opened.
    d.selForContextMenu = null;

    d.activeTouch = null;

    input.init(d);
  }

  // STATE UPDATES

  // Used to get the editor into a consistent state again when options change.

  function loadMode(cm) {
    cm.doc.mode = CodeMirror.getMode(cm.options, cm.doc.modeOption);
    resetModeState(cm);
  }

  function resetModeState(cm) {
    cm.doc.iter(function(line) {
      if (line.stateAfter) line.stateAfter = null;
      if (line.styles) line.styles = null;
    });
    cm.doc.frontier = cm.doc.first;
    startWorker(cm, 100);
    cm.state.modeGen++;
    if (cm.curOp) regChange(cm);
  }

  function wrappingChanged(cm) {
    if (cm.options.lineWrapping) {
      addClass(cm.display.wrapper, "CodeMirror-wrap");
      cm.display.sizer.style.minWidth = "";
      cm.display.sizerWidth = null;
    } else {
      rmClass(cm.display.wrapper, "CodeMirror-wrap");
      findMaxLine(cm);
    }
    estimateLineHeights(cm);
    regChange(cm);
    clearCaches(cm);
    setTimeout(function(){updateScrollbars(cm);}, 100);
  }

  // Returns a function that estimates the height of a line, to use as
  // first approximation until the line becomes visible (and is thus
  // properly measurable).
  function estimateHeight(cm) {
    var th = textHeight(cm.display), wrapping = cm.options.lineWrapping;
    var perLine = wrapping && Math.max(5, cm.display.scroller.clientWidth / charWidth(cm.display) - 3);
    return function(line) {
      if (lineIsHidden(cm.doc, line)) return 0;

      var widgetsHeight = 0;
      if (line.widgets) for (var i = 0; i < line.widgets.length; i++) {
        if (line.widgets[i].height) widgetsHeight += line.widgets[i].height;
      }

      if (wrapping)
        return widgetsHeight + (Math.ceil(line.text.length / perLine) || 1) * th;
      else
        return widgetsHeight + th;
    };
  }

  function estimateLineHeights(cm) {
    var doc = cm.doc, est = estimateHeight(cm);
    doc.iter(function(line) {
      var estHeight = est(line);
      if (estHeight != line.height) updateLineHeight(line, estHeight);
    });
  }

  function themeChanged(cm) {
    cm.display.wrapper.className = cm.display.wrapper.className.replace(/\s*cm-s-\S+/g, "") +
      cm.options.theme.replace(/(^|\s)\s*/g, " cm-s-");
    clearCaches(cm);
  }

  function guttersChanged(cm) {
    updateGutters(cm);
    regChange(cm);
    setTimeout(function(){alignHorizontally(cm);}, 20);
  }

  // Rebuild the gutter elements, ensure the margin to the left of the
  // code matches their width.
  function updateGutters(cm) {
    var gutters = cm.display.gutters, specs = cm.options.gutters;
    removeChildren(gutters);
    for (var i = 0; i < specs.length; ++i) {
      var gutterClass = specs[i];
      var gElt = gutters.appendChild(elt("div", null, "CodeMirror-gutter " + gutterClass));
      if (gutterClass == "CodeMirror-linenumbers") {
        cm.display.lineGutter = gElt;
        gElt.style.width = (cm.display.lineNumWidth || 1) + "px";
      }
    }
    gutters.style.display = i ? "" : "none";
    updateGutterSpace(cm);
  }

  function updateGutterSpace(cm) {
    var width = cm.display.gutters.offsetWidth;
    cm.display.sizer.style.marginLeft = width + "px";
  }

  // Compute the character length of a line, taking into account
  // collapsed ranges (see markText) that might hide parts, and join
  // other lines onto it.
  function lineLength(line) {
    if (line.height == 0) return 0;
    var len = line.text.length, merged, cur = line;
    while (merged = collapsedSpanAtStart(cur)) {
      var found = merged.find(0, true);
      cur = found.from.line;
      len += found.from.ch - found.to.ch;
    }
    cur = line;
    while (merged = collapsedSpanAtEnd(cur)) {
      var found = merged.find(0, true);
      len -= cur.text.length - found.from.ch;
      cur = found.to.line;
      len += cur.text.length - found.to.ch;
    }
    return len;
  }

  // Find the longest line in the document.
  function findMaxLine(cm) {
    var d = cm.display, doc = cm.doc;
    d.maxLine = getLine(doc, doc.first);
    d.maxLineLength = lineLength(d.maxLine);
    d.maxLineChanged = true;
    doc.iter(function(line) {
      var len = lineLength(line);
      if (len > d.maxLineLength) {
        d.maxLineLength = len;
        d.maxLine = line;
      }
    });
  }

  // Make sure the gutters options contains the element
  // "CodeMirror-linenumbers" when the lineNumbers option is true.
  function setGuttersForLineNumbers(options) {
    var found = indexOf(options.gutters, "CodeMirror-linenumbers");
    if (found == -1 && options.lineNumbers) {
      options.gutters = options.gutters.concat(["CodeMirror-linenumbers"]);
    } else if (found > -1 && !options.lineNumbers) {
      options.gutters = options.gutters.slice(0);
      options.gutters.splice(found, 1);
    }
  }

  // SCROLLBARS

  // Prepare DOM reads needed to update the scrollbars. Done in one
  // shot to minimize update/measure roundtrips.
  function measureForScrollbars(cm) {
    var d = cm.display, gutterW = d.gutters.offsetWidth;
    var docH = Math.round(cm.doc.height + paddingVert(cm.display));
    return {
      clientHeight: d.scroller.clientHeight,
      viewHeight: d.wrapper.clientHeight,
      scrollWidth: d.scroller.scrollWidth, clientWidth: d.scroller.clientWidth,
      viewWidth: d.wrapper.clientWidth,
      barLeft: cm.options.fixedGutter ? gutterW : 0,
      docHeight: docH,
      scrollHeight: docH + scrollGap(cm) + d.barHeight,
      nativeBarWidth: d.nativeBarWidth,
      gutterWidth: gutterW
    };
  }

  function NativeScrollbars(place, scroll, cm) {
    this.cm = cm;
    var vert = this.vert = elt("div", [elt("div", null, null, "min-width: 1px")], "CodeMirror-vscrollbar");
    var horiz = this.horiz = elt("div", [elt("div", null, null, "height: 100%; min-height: 1px")], "CodeMirror-hscrollbar");
    place(vert); place(horiz);

    on(vert, "scroll", function() {
      if (vert.clientHeight) scroll(vert.scrollTop, "vertical");
    });
    on(horiz, "scroll", function() {
      if (horiz.clientWidth) scroll(horiz.scrollLeft, "horizontal");
    });

    this.checkedOverlay = false;
    // Need to set a minimum width to see the scrollbar on IE7 (but must not set it on IE8).
    if (ie && ie_version < 8) this.horiz.style.minHeight = this.vert.style.minWidth = "18px";
  }

  NativeScrollbars.prototype = copyObj({
    update: function(measure) {
      var needsH = measure.scrollWidth > measure.clientWidth + 1;
      var needsV = measure.scrollHeight > measure.clientHeight + 1;
      var sWidth = measure.nativeBarWidth;

      if (needsV) {
        this.vert.style.display = "block";
        this.vert.style.bottom = needsH ? sWidth + "px" : "0";
        var totalHeight = measure.viewHeight - (needsH ? sWidth : 0);
        // A bug in IE8 can cause this value to be negative, so guard it.
        this.vert.firstChild.style.height =
          Math.max(0, measure.scrollHeight - measure.clientHeight + totalHeight) + "px";
      } else {
        this.vert.style.display = "";
        this.vert.firstChild.style.height = "0";
      }

      if (needsH) {
        this.horiz.style.display = "block";
        this.horiz.style.right = needsV ? sWidth + "px" : "0";
        this.horiz.style.left = measure.barLeft + "px";
        var totalWidth = measure.viewWidth - measure.barLeft - (needsV ? sWidth : 0);
        this.horiz.firstChild.style.width =
          (measure.scrollWidth - measure.clientWidth + totalWidth) + "px";
      } else {
        this.horiz.style.display = "";
        this.horiz.firstChild.style.width = "0";
      }

      if (!this.checkedOverlay && measure.clientHeight > 0) {
        if (sWidth == 0) this.overlayHack();
        this.checkedOverlay = true;
      }

      return {right: needsV ? sWidth : 0, bottom: needsH ? sWidth : 0};
    },
    setScrollLeft: function(pos) {
      if (this.horiz.scrollLeft != pos) this.horiz.scrollLeft = pos;
    },
    setScrollTop: function(pos) {
      if (this.vert.scrollTop != pos) this.vert.scrollTop = pos;
    },
    overlayHack: function() {
      var w = mac && !mac_geMountainLion ? "12px" : "18px";
      this.horiz.style.minHeight = this.vert.style.minWidth = w;
      var self = this;
      var barMouseDown = function(e) {
        if (e_target(e) != self.vert && e_target(e) != self.horiz)
          operation(self.cm, onMouseDown)(e);
      };
      on(this.vert, "mousedown", barMouseDown);
      on(this.horiz, "mousedown", barMouseDown);
    },
    clear: function() {
      var parent = this.horiz.parentNode;
      parent.removeChild(this.horiz);
      parent.removeChild(this.vert);
    }
  }, NativeScrollbars.prototype);

  function NullScrollbars() {}

  NullScrollbars.prototype = copyObj({
    update: function() { return {bottom: 0, right: 0}; },
    setScrollLeft: function() {},
    setScrollTop: function() {},
    clear: function() {}
  }, NullScrollbars.prototype);

  CodeMirror.scrollbarModel = {"native": NativeScrollbars, "null": NullScrollbars};

  function initScrollbars(cm) {
    if (cm.display.scrollbars) {
      cm.display.scrollbars.clear();
      if (cm.display.scrollbars.addClass)
        rmClass(cm.display.wrapper, cm.display.scrollbars.addClass);
    }

    cm.display.scrollbars = new CodeMirror.scrollbarModel[cm.options.scrollbarStyle](function(node) {
      cm.display.wrapper.insertBefore(node, cm.display.scrollbarFiller);
      // Prevent clicks in the scrollbars from killing focus
      on(node, "mousedown", function() {
        if (cm.state.focused) setTimeout(function() { cm.display.input.focus(); }, 0);
      });
      node.setAttribute("cm-not-content", "true");
    }, function(pos, axis) {
      if (axis == "horizontal") setScrollLeft(cm, pos);
      else setScrollTop(cm, pos);
    }, cm);
    if (cm.display.scrollbars.addClass)
      addClass(cm.display.wrapper, cm.display.scrollbars.addClass);
  }

  function updateScrollbars(cm, measure) {
    if (!measure) measure = measureForScrollbars(cm);
    var startWidth = cm.display.barWidth, startHeight = cm.display.barHeight;
    updateScrollbarsInner(cm, measure);
    for (var i = 0; i < 4 && startWidth != cm.display.barWidth || startHeight != cm.display.barHeight; i++) {
      if (startWidth != cm.display.barWidth && cm.options.lineWrapping)
        updateHeightsInViewport(cm);
      updateScrollbarsInner(cm, measureForScrollbars(cm));
      startWidth = cm.display.barWidth; startHeight = cm.display.barHeight;
    }
  }

  // Re-synchronize the fake scrollbars with the actual size of the
  // content.
  function updateScrollbarsInner(cm, measure) {
    var d = cm.display;
    var sizes = d.scrollbars.update(measure);

    d.sizer.style.paddingRight = (d.barWidth = sizes.right) + "px";
    d.sizer.style.paddingBottom = (d.barHeight = sizes.bottom) + "px";

    if (sizes.right && sizes.bottom) {
      d.scrollbarFiller.style.display = "block";
      d.scrollbarFiller.style.height = sizes.bottom + "px";
      d.scrollbarFiller.style.width = sizes.right + "px";
    } else d.scrollbarFiller.style.display = "";
    if (sizes.bottom && cm.options.coverGutterNextToScrollbar && cm.options.fixedGutter) {
      d.gutterFiller.style.display = "block";
      d.gutterFiller.style.height = sizes.bottom + "px";
      d.gutterFiller.style.width = measure.gutterWidth + "px";
    } else d.gutterFiller.style.display = "";
  }

  // Compute the lines that are visible in a given viewport (defaults
  // the the current scroll position). viewport may contain top,
  // height, and ensure (see op.scrollToPos) properties.
  function visibleLines(display, doc, viewport) {
    var top = viewport && viewport.top != null ? Math.max(0, viewport.top) : display.scroller.scrollTop;
    top = Math.floor(top - paddingTop(display));
    var bottom = viewport && viewport.bottom != null ? viewport.bottom : top + display.wrapper.clientHeight;

    var from = lineAtHeight(doc, top), to = lineAtHeight(doc, bottom);
    // Ensure is a {from: {line, ch}, to: {line, ch}} object, and
    // forces those lines into the viewport (if possible).
    if (viewport && viewport.ensure) {
      var ensureFrom = viewport.ensure.from.line, ensureTo = viewport.ensure.to.line;
      if (ensureFrom < from) {
        from = ensureFrom;
        to = lineAtHeight(doc, heightAtLine(getLine(doc, ensureFrom)) + display.wrapper.clientHeight);
      } else if (Math.min(ensureTo, doc.lastLine()) >= to) {
        from = lineAtHeight(doc, heightAtLine(getLine(doc, ensureTo)) - display.wrapper.clientHeight);
        to = ensureTo;
      }
    }
    return {from: from, to: Math.max(to, from + 1)};
  }

  // LINE NUMBERS

  // Re-align line numbers and gutter marks to compensate for
  // horizontal scrolling.
  function alignHorizontally(cm) {
    var display = cm.display, view = display.view;
    if (!display.alignWidgets && (!display.gutters.firstChild || !cm.options.fixedGutter)) return;
    var comp = compensateForHScroll(display) - display.scroller.scrollLeft + cm.doc.scrollLeft;
    var gutterW = display.gutters.offsetWidth, left = comp + "px";
    for (var i = 0; i < view.length; i++) if (!view[i].hidden) {
      if (cm.options.fixedGutter && view[i].gutter)
        view[i].gutter.style.left = left;
      var align = view[i].alignable;
      if (align) for (var j = 0; j < align.length; j++)
        align[j].style.left = left;
    }
    if (cm.options.fixedGutter)
      display.gutters.style.left = (comp + gutterW) + "px";
  }

  // Used to ensure that the line number gutter is still the right
  // size for the current document size. Returns true when an update
  // is needed.
  function maybeUpdateLineNumberWidth(cm) {
    if (!cm.options.lineNumbers) return false;
    var doc = cm.doc, last = lineNumberFor(cm.options, doc.first + doc.size - 1), display = cm.display;
    if (last.length != display.lineNumChars) {
      var test = display.measure.appendChild(elt("div", [elt("div", last)],
                                                 "CodeMirror-linenumber CodeMirror-gutter-elt"));
      var innerW = test.firstChild.offsetWidth, padding = test.offsetWidth - innerW;
      display.lineGutter.style.width = "";
      display.lineNumInnerWidth = Math.max(innerW, display.lineGutter.offsetWidth - padding) + 1;
      display.lineNumWidth = display.lineNumInnerWidth + padding;
      display.lineNumChars = display.lineNumInnerWidth ? last.length : -1;
      display.lineGutter.style.width = display.lineNumWidth + "px";
      updateGutterSpace(cm);
      return true;
    }
    return false;
  }

  function lineNumberFor(options, i) {
    return String(options.lineNumberFormatter(i + options.firstLineNumber));
  }

  // Computes display.scroller.scrollLeft + display.gutters.offsetWidth,
  // but using getBoundingClientRect to get a sub-pixel-accurate
  // result.
  function compensateForHScroll(display) {
    return display.scroller.getBoundingClientRect().left - display.sizer.getBoundingClientRect().left;
  }

  // DISPLAY DRAWING

  function DisplayUpdate(cm, viewport, force) {
    var display = cm.display;

    this.viewport = viewport;
    // Store some values that we'll need later (but don't want to force a relayout for)
    this.visible = visibleLines(display, cm.doc, viewport);
    this.editorIsHidden = !display.wrapper.offsetWidth;
    this.wrapperHeight = display.wrapper.clientHeight;
    this.wrapperWidth = display.wrapper.clientWidth;
    this.oldDisplayWidth = displayWidth(cm);
    this.force = force;
    this.dims = getDimensions(cm);
    this.events = [];
  }

  DisplayUpdate.prototype.signal = function(emitter, type) {
    if (hasHandler(emitter, type))
      this.events.push(arguments);
  };
  DisplayUpdate.prototype.finish = function() {
    for (var i = 0; i < this.events.length; i++)
      signal.apply(null, this.events[i]);
  };

  function maybeClipScrollbars(cm) {
    var display = cm.display;
    if (!display.scrollbarsClipped && display.scroller.offsetWidth) {
      display.nativeBarWidth = display.scroller.offsetWidth - display.scroller.clientWidth;
      display.heightForcer.style.height = scrollGap(cm) + "px";
      display.sizer.style.marginBottom = -display.nativeBarWidth + "px";
      display.sizer.style.borderRightWidth = scrollGap(cm) + "px";
      display.scrollbarsClipped = true;
    }
  }

  // Does the actual updating of the line display. Bails out
  // (returning false) when there is nothing to be done and forced is
  // false.
  function updateDisplayIfNeeded(cm, update) {
    var display = cm.display, doc = cm.doc;

    if (update.editorIsHidden) {
      resetView(cm);
      return false;
    }

    // Bail out if the visible area is already rendered and nothing changed.
    if (!update.force &&
        update.visible.from >= display.viewFrom && update.visible.to <= display.viewTo &&
        (display.updateLineNumbers == null || display.updateLineNumbers >= display.viewTo) &&
        display.renderedView == display.view && countDirtyView(cm) == 0)
      return false;

    if (maybeUpdateLineNumberWidth(cm)) {
      resetView(cm);
      update.dims = getDimensions(cm);
    }

    // Compute a suitable new viewport (from & to)
    var end = doc.first + doc.size;
    var from = Math.max(update.visible.from - cm.options.viewportMargin, doc.first);
    var to = Math.min(end, update.visible.to + cm.options.viewportMargin);
    if (display.viewFrom < from && from - display.viewFrom < 20) from = Math.max(doc.first, display.viewFrom);
    if (display.viewTo > to && display.viewTo - to < 20) to = Math.min(end, display.viewTo);
    if (sawCollapsedSpans) {
      from = visualLineNo(cm.doc, from);
      to = visualLineEndNo(cm.doc, to);
    }

    var different = from != display.viewFrom || to != display.viewTo ||
      display.lastWrapHeight != update.wrapperHeight || display.lastWrapWidth != update.wrapperWidth;
    adjustView(cm, from, to);

    display.viewOffset = heightAtLine(getLine(cm.doc, display.viewFrom));
    // Position the mover div to align with the current scroll position
    cm.display.mover.style.top = display.viewOffset + "px";

    var toUpdate = countDirtyView(cm);
    if (!different && toUpdate == 0 && !update.force && display.renderedView == display.view &&
        (display.updateLineNumbers == null || display.updateLineNumbers >= display.viewTo))
      return false;

    // For big changes, we hide the enclosing element during the
    // update, since that speeds up the operations on most browsers.
    var focused = activeElt();
    if (toUpdate > 4) display.lineDiv.style.display = "none";
    patchDisplay(cm, display.updateLineNumbers, update.dims);
    if (toUpdate > 4) display.lineDiv.style.display = "";
    display.renderedView = display.view;
    // There might have been a widget with a focused element that got
    // hidden or updated, if so re-focus it.
    if (focused && activeElt() != focused && focused.offsetHeight) focused.focus();

    // Prevent selection and cursors from interfering with the scroll
    // width and height.
    removeChildren(display.cursorDiv);
    removeChildren(display.selectionDiv);
    display.gutters.style.height = 0;

    if (different) {
      display.lastWrapHeight = update.wrapperHeight;
      display.lastWrapWidth = update.wrapperWidth;
      startWorker(cm, 400);
    }

    display.updateLineNumbers = null;

    return true;
  }

  function postUpdateDisplay(cm, update) {
    var viewport = update.viewport;
    for (var first = true;; first = false) {
      if (!first || !cm.options.lineWrapping || update.oldDisplayWidth == displayWidth(cm)) {
        // Clip forced viewport to actual scrollable area.
        if (viewport && viewport.top != null)
          viewport = {top: Math.min(cm.doc.height + paddingVert(cm.display) - displayHeight(cm), viewport.top)};
        // Updated line heights might result in the drawn area not
        // actually covering the viewport. Keep looping until it does.
        update.visible = visibleLines(cm.display, cm.doc, viewport);
        if (update.visible.from >= cm.display.viewFrom && update.visible.to <= cm.display.viewTo)
          break;
      }
      if (!updateDisplayIfNeeded(cm, update)) break;
      updateHeightsInViewport(cm);
      var barMeasure = measureForScrollbars(cm);
      updateSelection(cm);
      setDocumentHeight(cm, barMeasure);
      updateScrollbars(cm, barMeasure);
    }

    update.signal(cm, "update", cm);
    if (cm.display.viewFrom != cm.display.reportedViewFrom || cm.display.viewTo != cm.display.reportedViewTo) {
      update.signal(cm, "viewportChange", cm, cm.display.viewFrom, cm.display.viewTo);
      cm.display.reportedViewFrom = cm.display.viewFrom; cm.display.reportedViewTo = cm.display.viewTo;
    }
  }

  function updateDisplaySimple(cm, viewport) {
    var update = new DisplayUpdate(cm, viewport);
    if (updateDisplayIfNeeded(cm, update)) {
      updateHeightsInViewport(cm);
      postUpdateDisplay(cm, update);
      var barMeasure = measureForScrollbars(cm);
      updateSelection(cm);
      setDocumentHeight(cm, barMeasure);
      updateScrollbars(cm, barMeasure);
      update.finish();
    }
  }

  function setDocumentHeight(cm, measure) {
    cm.display.sizer.style.minHeight = measure.docHeight + "px";
    var total = measure.docHeight + cm.display.barHeight;
    cm.display.heightForcer.style.top = total + "px";
    cm.display.gutters.style.height = Math.max(total + scrollGap(cm), measure.clientHeight) + "px";
  }

  // Read the actual heights of the rendered lines, and update their
  // stored heights to match.
  function updateHeightsInViewport(cm) {
    var display = cm.display;
    var prevBottom = display.lineDiv.offsetTop;
    for (var i = 0; i < display.view.length; i++) {
      var cur = display.view[i], height;
      if (cur.hidden) continue;
      if (ie && ie_version < 8) {
        var bot = cur.node.offsetTop + cur.node.offsetHeight;
        height = bot - prevBottom;
        prevBottom = bot;
      } else {
        var box = cur.node.getBoundingClientRect();
        height = box.bottom - box.top;
      }
      var diff = cur.line.height - height;
      if (height < 2) height = textHeight(display);
      if (diff > .001 || diff < -.001) {
        updateLineHeight(cur.line, height);
        updateWidgetHeight(cur.line);
        if (cur.rest) for (var j = 0; j < cur.rest.length; j++)
          updateWidgetHeight(cur.rest[j]);
      }
    }
  }

  // Read and store the height of line widgets associated with the
  // given line.
  function updateWidgetHeight(line) {
    if (line.widgets) for (var i = 0; i < line.widgets.length; ++i)
      line.widgets[i].height = line.widgets[i].node.offsetHeight;
  }

  // Do a bulk-read of the DOM positions and sizes needed to draw the
  // view, so that we don't interleave reading and writing to the DOM.
  function getDimensions(cm) {
    var d = cm.display, left = {}, width = {};
    var gutterLeft = d.gutters.clientLeft;
    for (var n = d.gutters.firstChild, i = 0; n; n = n.nextSibling, ++i) {
      left[cm.options.gutters[i]] = n.offsetLeft + n.clientLeft + gutterLeft;
      width[cm.options.gutters[i]] = n.clientWidth;
    }
    return {fixedPos: compensateForHScroll(d),
            gutterTotalWidth: d.gutters.offsetWidth,
            gutterLeft: left,
            gutterWidth: width,
            wrapperWidth: d.wrapper.clientWidth};
  }

  // Sync the actual display DOM structure with display.view, removing
  // nodes for lines that are no longer in view, and creating the ones
  // that are not there yet, and updating the ones that are out of
  // date.
  function patchDisplay(cm, updateNumbersFrom, dims) {
    var display = cm.display, lineNumbers = cm.options.lineNumbers;
    var container = display.lineDiv, cur = container.firstChild;

    function rm(node) {
      var next = node.nextSibling;
      // Works around a throw-scroll bug in OS X Webkit
      if (webkit && mac && cm.display.currentWheelTarget == node)
        node.style.display = "none";
      else
        node.parentNode.removeChild(node);
      return next;
    }

    var view = display.view, lineN = display.viewFrom;
    // Loop over the elements in the view, syncing cur (the DOM nodes
    // in display.lineDiv) with the view as we go.
    for (var i = 0; i < view.length; i++) {
      var lineView = view[i];
      if (lineView.hidden) {
      } else if (!lineView.node || lineView.node.parentNode != container) { // Not drawn yet
        var node = buildLineElement(cm, lineView, lineN, dims);
        container.insertBefore(node, cur);
      } else { // Already drawn
        while (cur != lineView.node) cur = rm(cur);
        var updateNumber = lineNumbers && updateNumbersFrom != null &&
          updateNumbersFrom <= lineN && lineView.lineNumber;
        if (lineView.changes) {
          if (indexOf(lineView.changes, "gutter") > -1) updateNumber = false;
          updateLineForChanges(cm, lineView, lineN, dims);
        }
        if (updateNumber) {
          removeChildren(lineView.lineNumber);
          lineView.lineNumber.appendChild(document.createTextNode(lineNumberFor(cm.options, lineN)));
        }
        cur = lineView.node.nextSibling;
      }
      lineN += lineView.size;
    }
    while (cur) cur = rm(cur);
  }

  // When an aspect of a line changes, a string is added to
  // lineView.changes. This updates the relevant part of the line's
  // DOM structure.
  function updateLineForChanges(cm, lineView, lineN, dims) {
    for (var j = 0; j < lineView.changes.length; j++) {
      var type = lineView.changes[j];
      if (type == "text") updateLineText(cm, lineView);
      else if (type == "gutter") updateLineGutter(cm, lineView, lineN, dims);
      else if (type == "class") updateLineClasses(lineView);
      else if (type == "widget") updateLineWidgets(cm, lineView, dims);
    }
    lineView.changes = null;
  }

  // Lines with gutter elements, widgets or a background class need to
  // be wrapped, and have the extra elements added to the wrapper div
  function ensureLineWrapped(lineView) {
    if (lineView.node == lineView.text) {
      lineView.node = elt("div", null, null, "position: relative");
      if (lineView.text.parentNode)
        lineView.text.parentNode.replaceChild(lineView.node, lineView.text);
      lineView.node.appendChild(lineView.text);
      if (ie && ie_version < 8) lineView.node.style.zIndex = 2;
    }
    return lineView.node;
  }

  function updateLineBackground(lineView) {
    var cls = lineView.bgClass ? lineView.bgClass + " " + (lineView.line.bgClass || "") : lineView.line.bgClass;
    if (cls) cls += " CodeMirror-linebackground";
    if (lineView.background) {
      if (cls) lineView.background.className = cls;
      else { lineView.background.parentNode.removeChild(lineView.background); lineView.background = null; }
    } else if (cls) {
      var wrap = ensureLineWrapped(lineView);
      lineView.background = wrap.insertBefore(elt("div", null, cls), wrap.firstChild);
    }
  }

  // Wrapper around buildLineContent which will reuse the structure
  // in display.externalMeasured when possible.
  function getLineContent(cm, lineView) {
    var ext = cm.display.externalMeasured;
    if (ext && ext.line == lineView.line) {
      cm.display.externalMeasured = null;
      lineView.measure = ext.measure;
      return ext.built;
    }
    return buildLineContent(cm, lineView);
  }

  // Redraw the line's text. Interacts with the background and text
  // classes because the mode may output tokens that influence these
  // classes.
  function updateLineText(cm, lineView) {
    var cls = lineView.text.className;
    var built = getLineContent(cm, lineView);
    if (lineView.text == lineView.node) lineView.node = built.pre;
    lineView.text.parentNode.replaceChild(built.pre, lineView.text);
    lineView.text = built.pre;
    if (built.bgClass != lineView.bgClass || built.textClass != lineView.textClass) {
      lineView.bgClass = built.bgClass;
      lineView.textClass = built.textClass;
      updateLineClasses(lineView);
    } else if (cls) {
      lineView.text.className = cls;
    }
  }

  function updateLineClasses(lineView) {
    updateLineBackground(lineView);
    if (lineView.line.wrapClass)
      ensureLineWrapped(lineView).className = lineView.line.wrapClass;
    else if (lineView.node != lineView.text)
      lineView.node.className = "";
    var textClass = lineView.textClass ? lineView.textClass + " " + (lineView.line.textClass || "") : lineView.line.textClass;
    lineView.text.className = textClass || "";
  }

  function updateLineGutter(cm, lineView, lineN, dims) {
    if (lineView.gutter) {
      lineView.node.removeChild(lineView.gutter);
      lineView.gutter = null;
    }
    var markers = lineView.line.gutterMarkers;
    if (cm.options.lineNumbers || markers) {
      var wrap = ensureLineWrapped(lineView);
      var gutterWrap = lineView.gutter = elt("div", null, "CodeMirror-gutter-wrapper", "left: " +
                                             (cm.options.fixedGutter ? dims.fixedPos : -dims.gutterTotalWidth) +
                                             "px; width: " + dims.gutterTotalWidth + "px");
      cm.display.input.setUneditable(gutterWrap);
      wrap.insertBefore(gutterWrap, lineView.text);
      if (lineView.line.gutterClass)
        gutterWrap.className += " " + lineView.line.gutterClass;
      if (cm.options.lineNumbers && (!markers || !markers["CodeMirror-linenumbers"]))
        lineView.lineNumber = gutterWrap.appendChild(
          elt("div", lineNumberFor(cm.options, lineN),
              "CodeMirror-linenumber CodeMirror-gutter-elt",
              "left: " + dims.gutterLeft["CodeMirror-linenumbers"] + "px; width: "
              + cm.display.lineNumInnerWidth + "px"));
      if (markers) for (var k = 0; k < cm.options.gutters.length; ++k) {
        var id = cm.options.gutters[k], found = markers.hasOwnProperty(id) && markers[id];
        if (found)
          gutterWrap.appendChild(elt("div", [found], "CodeMirror-gutter-elt", "left: " +
                                     dims.gutterLeft[id] + "px; width: " + dims.gutterWidth[id] + "px"));
      }
    }
  }

  function updateLineWidgets(cm, lineView, dims) {
    if (lineView.alignable) lineView.alignable = null;
    for (var node = lineView.node.firstChild, next; node; node = next) {
      var next = node.nextSibling;
      if (node.className == "CodeMirror-linewidget")
        lineView.node.removeChild(node);
    }
    insertLineWidgets(cm, lineView, dims);
  }

  // Build a line's DOM representation from scratch
  function buildLineElement(cm, lineView, lineN, dims) {
    var built = getLineContent(cm, lineView);
    lineView.text = lineView.node = built.pre;
    if (built.bgClass) lineView.bgClass = built.bgClass;
    if (built.textClass) lineView.textClass = built.textClass;

    updateLineClasses(lineView);
    updateLineGutter(cm, lineView, lineN, dims);
    insertLineWidgets(cm, lineView, dims);
    return lineView.node;
  }

  // A lineView may contain multiple logical lines (when merged by
  // collapsed spans). The widgets for all of them need to be drawn.
  function insertLineWidgets(cm, lineView, dims) {
    insertLineWidgetsFor(cm, lineView.line, lineView, dims, true);
    if (lineView.rest) for (var i = 0; i < lineView.rest.length; i++)
      insertLineWidgetsFor(cm, lineView.rest[i], lineView, dims, false);
  }

  function insertLineWidgetsFor(cm, line, lineView, dims, allowAbove) {
    if (!line.widgets) return;
    var wrap = ensureLineWrapped(lineView);
    for (var i = 0, ws = line.widgets; i < ws.length; ++i) {
      var widget = ws[i], node = elt("div", [widget.node], "CodeMirror-linewidget");
      if (!widget.handleMouseEvents) node.setAttribute("cm-ignore-events", "true");
      positionLineWidget(widget, node, lineView, dims);
      cm.display.input.setUneditable(node);
      if (allowAbove && widget.above)
        wrap.insertBefore(node, lineView.gutter || lineView.text);
      else
        wrap.appendChild(node);
      signalLater(widget, "redraw");
    }
  }

  function positionLineWidget(widget, node, lineView, dims) {
    if (widget.noHScroll) {
      (lineView.alignable || (lineView.alignable = [])).push(node);
      var width = dims.wrapperWidth;
      node.style.left = dims.fixedPos + "px";
      if (!widget.coverGutter) {
        width -= dims.gutterTotalWidth;
        node.style.paddingLeft = dims.gutterTotalWidth + "px";
      }
      node.style.width = width + "px";
    }
    if (widget.coverGutter) {
      node.style.zIndex = 5;
      node.style.position = "relative";
      if (!widget.noHScroll) node.style.marginLeft = -dims.gutterTotalWidth + "px";
    }
  }

  // POSITION OBJECT

  // A Pos instance represents a position within the text.
  var Pos = CodeMirror.Pos = function(line, ch) {
    if (!(this instanceof Pos)) return new Pos(line, ch);
    this.line = line; this.ch = ch;
  };

  // Compare two positions, return 0 if they are the same, a negative
  // number when a is less, and a positive number otherwise.
  var cmp = CodeMirror.cmpPos = function(a, b) { return a.line - b.line || a.ch - b.ch; };

  function copyPos(x) {return Pos(x.line, x.ch);}
  function maxPos(a, b) { return cmp(a, b) < 0 ? b : a; }
  function minPos(a, b) { return cmp(a, b) < 0 ? a : b; }

  // INPUT HANDLING

  function ensureFocus(cm) {
    if (!cm.state.focused) { cm.display.input.focus(); onFocus(cm); }
  }

  function isReadOnly(cm) {
    return cm.options.readOnly || cm.doc.cantEdit;
  }

  // This will be set to an array of strings when copying, so that,
  // when pasting, we know what kind of selections the copied text
  // was made out of.
  var lastCopied = null;

  function applyTextInput(cm, inserted, deleted, sel, origin) {
    var doc = cm.doc;
    cm.display.shift = false;
    if (!sel) sel = doc.sel;

    var paste = cm.state.pasteIncoming || origin == "paste";
    var textLines = splitLines(inserted), multiPaste = null;
    // When pasing N lines into N selections, insert one line per selection
    if (paste && sel.ranges.length > 1) {
      if (lastCopied && lastCopied.join("\n") == inserted)
        multiPaste = sel.ranges.length % lastCopied.length == 0 && map(lastCopied, splitLines);
      else if (textLines.length == sel.ranges.length)
        multiPaste = map(textLines, function(l) { return [l]; });
    }

    // Normal behavior is to insert the new text into every selection
    for (var i = sel.ranges.length - 1; i >= 0; i--) {
      var range = sel.ranges[i];
      var from = range.from(), to = range.to();
      if (range.empty()) {
        if (deleted && deleted > 0) // Handle deletion
          from = Pos(from.line, from.ch - deleted);
        else if (cm.state.overwrite && !paste) // Handle overwrite
          to = Pos(to.line, Math.min(getLine(doc, to.line).text.length, to.ch + lst(textLines).length));
      }
      var updateInput = cm.curOp.updateInput;
      var changeEvent = {from: from, to: to, text: multiPaste ? multiPaste[i % multiPaste.length] : textLines,
                         origin: origin || (paste ? "paste" : cm.state.cutIncoming ? "cut" : "+input")};
      makeChange(cm.doc, changeEvent);
      signalLater(cm, "inputRead", cm, changeEvent);
    }
    if (inserted && !paste)
      triggerElectric(cm, inserted);

    ensureCursorVisible(cm);
    cm.curOp.updateInput = updateInput;
    cm.curOp.typing = true;
    cm.state.pasteIncoming = cm.state.cutIncoming = false;
  }

  function handlePaste(e, cm) {
    var pasted = e.clipboardData && e.clipboardData.getData("text/plain");
    if (pasted) {
      e.preventDefault();
      runInOp(cm, function() { applyTextInput(cm, pasted, 0, null, "paste"); });
      return true;
    }
  }

  function triggerElectric(cm, inserted) {
    // When an 'electric' character is inserted, immediately trigger a reindent
    if (!cm.options.electricChars || !cm.options.smartIndent) return;
    var sel = cm.doc.sel;

    for (var i = sel.ranges.length - 1; i >= 0; i--) {
      var range = sel.ranges[i];
      if (range.head.ch > 100 || (i && sel.ranges[i - 1].head.line == range.head.line)) continue;
      var mode = cm.getModeAt(range.head);
      var indented = false;
      if (mode.electricChars) {
        for (var j = 0; j < mode.electricChars.length; j++)
          if (inserted.indexOf(mode.electricChars.charAt(j)) > -1) {
            indented = indentLine(cm, range.head.line, "smart");
            break;
          }
      } else if (mode.electricInput) {
        if (mode.electricInput.test(getLine(cm.doc, range.head.line).text.slice(0, range.head.ch)))
          indented = indentLine(cm, range.head.line, "smart");
      }
      if (indented) signalLater(cm, "electricInput", cm, range.head.line);
    }
  }

  function copyableRanges(cm) {
    var text = [], ranges = [];
    for (var i = 0; i < cm.doc.sel.ranges.length; i++) {
      var line = cm.doc.sel.ranges[i].head.line;
      var lineRange = {anchor: Pos(line, 0), head: Pos(line + 1, 0)};
      ranges.push(lineRange);
      text.push(cm.getRange(lineRange.anchor, lineRange.head));
    }
    return {text: text, ranges: ranges};
  }

  function disableBrowserMagic(field) {
    field.setAttribute("autocorrect", "off");
    field.setAttribute("autocapitalize", "off");
    field.setAttribute("spellcheck", "false");
  }

  // TEXTAREA INPUT STYLE

  function TextareaInput(cm) {
    this.cm = cm;
    // See input.poll and input.reset
    this.prevInput = "";

    // Flag that indicates whether we expect input to appear real soon
    // now (after some event like 'keypress' or 'input') and are
    // polling intensively.
    this.pollingFast = false;
    // Self-resetting timeout for the poller
    this.polling = new Delayed();
    // Tracks when input.reset has punted to just putting a short
    // string into the textarea instead of the full selection.
    this.inaccurateSelection = false;
    // Used to work around IE issue with selection being forgotten when focus moves away from textarea
    this.hasSelection = false;
    this.composing = null;
  };

  function hiddenTextarea() {
    var te = elt("textarea", null, null, "position: absolute; padding: 0; width: 1px; height: 1em; outline: none");
    var div = elt("div", [te], null, "overflow: hidden; position: relative; width: 3px; height: 0px;");
    // The textarea is kept positioned near the cursor to prevent the
    // fact that it'll be scrolled into view on input from scrolling
    // our fake cursor out of view. On webkit, when wrap=off, paste is
    // very slow. So make the area wide instead.
    if (webkit) te.style.width = "1000px";
    else te.setAttribute("wrap", "off");
    // If border: 0; -- iOS fails to open keyboard (issue #1287)
    if (ios) te.style.border = "1px solid black";
    disableBrowserMagic(te);
    return div;
  }

  TextareaInput.prototype = copyObj({
    init: function(display) {
      var input = this, cm = this.cm;

      // Wraps and hides input textarea
      var div = this.wrapper = hiddenTextarea();
      // The semihidden textarea that is focused when the editor is
      // focused, and receives input.
      var te = this.textarea = div.firstChild;
      display.wrapper.insertBefore(div, display.wrapper.firstChild);

      // Needed to hide big blue blinking cursor on Mobile Safari (doesn't seem to work in iOS 8 anymore)
      if (ios) te.style.width = "0px";

      on(te, "input", function() {
        if (ie && ie_version >= 9 && input.hasSelection) input.hasSelection = null;
        input.poll();
      });

      on(te, "paste", function(e) {
        if (handlePaste(e, cm)) return true;

        cm.state.pasteIncoming = true;
        input.fastPoll();
      });

      function prepareCopyCut(e) {
        if (cm.somethingSelected()) {
          lastCopied = cm.getSelections();
          if (input.inaccurateSelection) {
            input.prevInput = "";
            input.inaccurateSelection = false;
            te.value = lastCopied.join("\n");
            selectInput(te);
          }
        } else if (!cm.options.lineWiseCopyCut) {
          return;
        } else {
          var ranges = copyableRanges(cm);
          lastCopied = ranges.text;
          if (e.type == "cut") {
            cm.setSelections(ranges.ranges, null, sel_dontScroll);
          } else {
            input.prevInput = "";
            te.value = ranges.text.join("\n");
            selectInput(te);
          }
        }
        if (e.type == "cut") cm.state.cutIncoming = true;
      }
      on(te, "cut", prepareCopyCut);
      on(te, "copy", prepareCopyCut);

      on(display.scroller, "paste", function(e) {
        if (eventInWidget(display, e)) return;
        cm.state.pasteIncoming = true;
        input.focus();
      });

      // Prevent normal selection in the editor (we handle our own)
      on(display.lineSpace, "selectstart", function(e) {
        if (!eventInWidget(display, e)) e_preventDefault(e);
      });

      on(te, "compositionstart", function() {
        var start = cm.getCursor("from");
        input.composing = {
          start: start,
          range: cm.markText(start, cm.getCursor("to"), {className: "CodeMirror-composing"})
        };
      });
      on(te, "compositionend", function() {
        if (input.composing) {
          input.poll();
          input.composing.range.clear();
          input.composing = null;
        }
      });
    },

    prepareSelection: function() {
      // Redraw the selection and/or cursor
      var cm = this.cm, display = cm.display, doc = cm.doc;
      var result = prepareSelection(cm);

      // Move the hidden textarea near the cursor to prevent scrolling artifacts
      if (cm.options.moveInputWithCursor) {
        var headPos = cursorCoords(cm, doc.sel.primary().head, "div");
        var wrapOff = display.wrapper.getBoundingClientRect(), lineOff = display.lineDiv.getBoundingClientRect();
        result.teTop = Math.max(0, Math.min(display.wrapper.clientHeight - 10,
                                            headPos.top + lineOff.top - wrapOff.top));
        result.teLeft = Math.max(0, Math.min(display.wrapper.clientWidth - 10,
                                             headPos.left + lineOff.left - wrapOff.left));
      }

      return result;
    },

    showSelection: function(drawn) {
      var cm = this.cm, display = cm.display;
      removeChildrenAndAdd(display.cursorDiv, drawn.cursors);
      removeChildrenAndAdd(display.selectionDiv, drawn.selection);
      if (drawn.teTop != null) {
        this.wrapper.style.top = drawn.teTop + "px";
        this.wrapper.style.left = drawn.teLeft + "px";
      }
    },

    // Reset the input to correspond to the selection (or to be empty,
    // when not typing and nothing is selected)
    reset: function(typing) {
      if (this.contextMenuPending) return;
      var minimal, selected, cm = this.cm, doc = cm.doc;
      if (cm.somethingSelected()) {
        this.prevInput = "";
        var range = doc.sel.primary();
        minimal = hasCopyEvent &&
          (range.to().line - range.from().line > 100 || (selected = cm.getSelection()).length > 1000);
        var content = minimal ? "-" : selected || cm.getSelection();
        this.textarea.value = content;
        if (cm.state.focused) selectInput(this.textarea);
        if (ie && ie_version >= 9) this.hasSelection = content;
      } else if (!typing) {
        this.prevInput = this.textarea.value = "";
        if (ie && ie_version >= 9) this.hasSelection = null;
      }
      this.inaccurateSelection = minimal;
    },

    getField: function() { return this.textarea; },

    supportsTouch: function() { return false; },

    focus: function() {
      if (this.cm.options.readOnly != "nocursor" && (!mobile || activeElt() != this.textarea)) {
        try { this.textarea.focus(); }
        catch (e) {} // IE8 will throw if the textarea is display: none or not in DOM
      }
    },

    blur: function() { this.textarea.blur(); },

    resetPosition: function() {
      this.wrapper.style.top = this.wrapper.style.left = 0;
    },

    receivedFocus: function() { this.slowPoll(); },

    // Poll for input changes, using the normal rate of polling. This
    // runs as long as the editor is focused.
    slowPoll: function() {
      var input = this;
      if (input.pollingFast) return;
      input.polling.set(this.cm.options.pollInterval, function() {
        input.poll();
        if (input.cm.state.focused) input.slowPoll();
      });
    },

    // When an event has just come in that is likely to add or change
    // something in the input textarea, we poll faster, to ensure that
    // the change appears on the screen quickly.
    fastPoll: function() {
      var missed = false, input = this;
      input.pollingFast = true;
      function p() {
        var changed = input.poll();
        if (!changed && !missed) {missed = true; input.polling.set(60, p);}
        else {input.pollingFast = false; input.slowPoll();}
      }
      input.polling.set(20, p);
    },

    // Read input from the textarea, and update the document to match.
    // When something is selected, it is present in the textarea, and
    // selected (unless it is huge, in which case a placeholder is
    // used). When nothing is selected, the cursor sits after previously
    // seen text (can be empty), which is stored in prevInput (we must
    // not reset the textarea when typing, because that breaks IME).
    poll: function() {
      var cm = this.cm, input = this.textarea, prevInput = this.prevInput;
      // Since this is called a *lot*, try to bail out as cheaply as
      // possible when it is clear that nothing happened. hasSelection
      // will be the case when there is a lot of text in the textarea,
      // in which case reading its value would be expensive.
      if (this.contextMenuPending || !cm.state.focused ||
          (hasSelection(input) && !prevInput) ||
          isReadOnly(cm) || cm.options.disableInput || cm.state.keySeq)
        return false;

      var text = input.value;
      // If nothing changed, bail.
      if (text == prevInput && !cm.somethingSelected()) return false;
      // Work around nonsensical selection resetting in IE9/10, and
      // inexplicable appearance of private area unicode characters on
      // some key combos in Mac (#2689).
      if (ie && ie_version >= 9 && this.hasSelection === text ||
          mac && /[\uf700-\uf7ff]/.test(text)) {
        cm.display.input.reset();
        return false;
      }

      if (cm.doc.sel == cm.display.selForContextMenu) {
        var first = text.charCodeAt(0);
        if (first == 0x200b && !prevInput) prevInput = "\u200b";
        if (first == 0x21da) { this.reset(); return this.cm.execCommand("undo"); }
      }
      // Find the part of the input that is actually new
      var same = 0, l = Math.min(prevInput.length, text.length);
      while (same < l && prevInput.charCodeAt(same) == text.charCodeAt(same)) ++same;

      var self = this;
      runInOp(cm, function() {
        applyTextInput(cm, text.slice(same), prevInput.length - same,
                       null, self.composing ? "*compose" : null);

        // Don't leave long text in the textarea, since it makes further polling slow
        if (text.length > 1000 || text.indexOf("\n") > -1) input.value = self.prevInput = "";
        else self.prevInput = text;

        if (self.composing) {
          self.composing.range.clear();
          self.composing.range = cm.markText(self.composing.start, cm.getCursor("to"),
                                             {className: "CodeMirror-composing"});
        }
      });
      return true;
    },

    ensurePolled: function() {
      if (this.pollingFast && this.poll()) this.pollingFast = false;
    },

    onKeyPress: function() {
      if (ie && ie_version >= 9) this.hasSelection = null;
      this.fastPoll();
    },

    onContextMenu: function(e) {
      var input = this, cm = input.cm, display = cm.display, te = input.textarea;
      var pos = posFromMouse(cm, e), scrollPos = display.scroller.scrollTop;
      if (!pos || presto) return; // Opera is difficult.

      // Reset the current text selection only if the click is done outside of the selection
      // and 'resetSelectionOnContextMenu' option is true.
      var reset = cm.options.resetSelectionOnContextMenu;
      if (reset && cm.doc.sel.contains(pos) == -1)
        operation(cm, setSelection)(cm.doc, simpleSelection(pos), sel_dontScroll);

      var oldCSS = te.style.cssText;
      input.wrapper.style.position = "absolute";
      te.style.cssText = "position: fixed; width: 30px; height: 30px; top: " + (e.clientY - 5) +
        "px; left: " + (e.clientX - 5) + "px; z-index: 1000; background: " +
        (ie ? "rgba(255, 255, 255, .05)" : "transparent") +
        "; outline: none; border-width: 0; outline: none; overflow: hidden; opacity: .05; filter: alpha(opacity=5);";
      if (webkit) var oldScrollY = window.scrollY; // Work around Chrome issue (#2712)
      display.input.focus();
      if (webkit) window.scrollTo(null, oldScrollY);
      display.input.reset();
      // Adds "Select all" to context menu in FF
      if (!cm.somethingSelected()) te.value = input.prevInput = " ";
      input.contextMenuPending = true;
      display.selForContextMenu = cm.doc.sel;
      clearTimeout(display.detectingSelectAll);

      // Select-all will be greyed out if there's nothing to select, so
      // this adds a zero-width space so that we can later check whether
      // it got selected.
      function prepareSelectAllHack() {
        if (te.selectionStart != null) {
          var selected = cm.somethingSelected();
          var extval = "\u200b" + (selected ? te.value : "");
          te.value = "\u21da"; // Used to catch context-menu undo
          te.value = extval;
          input.prevInput = selected ? "" : "\u200b";
          te.selectionStart = 1; te.selectionEnd = extval.length;
          // Re-set this, in case some other handler touched the
          // selection in the meantime.
          display.selForContextMenu = cm.doc.sel;
        }
      }
      function rehide() {
        input.contextMenuPending = false;
        input.wrapper.style.position = "relative";
        te.style.cssText = oldCSS;
        if (ie && ie_version < 9) display.scrollbars.setScrollTop(display.scroller.scrollTop = scrollPos);

        // Try to detect the user choosing select-all
        if (te.selectionStart != null) {
          if (!ie || (ie && ie_version < 9)) prepareSelectAllHack();
          var i = 0, poll = function() {
            if (display.selForContextMenu == cm.doc.sel && te.selectionStart == 0 &&
                te.selectionEnd > 0 && input.prevInput == "\u200b")
              operation(cm, commands.selectAll)(cm);
            else if (i++ < 10) display.detectingSelectAll = setTimeout(poll, 500);
            else display.input.reset();
          };
          display.detectingSelectAll = setTimeout(poll, 200);
        }
      }

      if (ie && ie_version >= 9) prepareSelectAllHack();
      if (captureRightClick) {
        e_stop(e);
        var mouseup = function() {
          off(window, "mouseup", mouseup);
          setTimeout(rehide, 20);
        };
        on(window, "mouseup", mouseup);
      } else {
        setTimeout(rehide, 50);
      }
    },

    setUneditable: nothing,

    needsContentAttribute: false
  }, TextareaInput.prototype);

  // CONTENTEDITABLE INPUT STYLE

  function ContentEditableInput(cm) {
    this.cm = cm;
    this.lastAnchorNode = this.lastAnchorOffset = this.lastFocusNode = this.lastFocusOffset = null;
    this.polling = new Delayed();
    this.gracePeriod = false;
  }

  ContentEditableInput.prototype = copyObj({
    init: function(display) {
      var input = this, cm = input.cm;
      var div = input.div = display.lineDiv;
      div.contentEditable = "true";
      disableBrowserMagic(div);

      on(div, "paste", function(e) { handlePaste(e, cm); })

      on(div, "compositionstart", function(e) {
        var data = e.data;
        input.composing = {sel: cm.doc.sel, data: data, startData: data};
        if (!data) return;
        var prim = cm.doc.sel.primary();
        var line = cm.getLine(prim.head.line);
        var found = line.indexOf(data, Math.max(0, prim.head.ch - data.length));
        if (found > -1 && found <= prim.head.ch)
          input.composing.sel = simpleSelection(Pos(prim.head.line, found),
                                                Pos(prim.head.line, found + data.length));
      });
      on(div, "compositionupdate", function(e) {
        input.composing.data = e.data;
      });
      on(div, "compositionend", function(e) {
        var ours = input.composing;
        if (!ours) return;
        if (e.data != ours.startData && !/\u200b/.test(e.data))
          ours.data = e.data;
        // Need a small delay to prevent other code (input event,
        // selection polling) from doing damage when fired right after
        // compositionend.
        setTimeout(function() {
          if (!ours.handled)
            input.applyComposition(ours);
          if (input.composing == ours)
            input.composing = null;
        }, 50);
      });

      on(div, "touchstart", function() {
        input.forceCompositionEnd();
      });

      on(div, "input", function() {
        if (input.composing) return;
        if (!input.pollContent())
          runInOp(input.cm, function() {regChange(cm);});
      });

      function onCopyCut(e) {
        if (cm.somethingSelected()) {
          lastCopied = cm.getSelections();
          if (e.type == "cut") cm.replaceSelection("", null, "cut");
        } else if (!cm.options.lineWiseCopyCut) {
          return;
        } else {
          var ranges = copyableRanges(cm);
          lastCopied = ranges.text;
          if (e.type == "cut") {
            cm.operation(function() {
              cm.setSelections(ranges.ranges, 0, sel_dontScroll);
              cm.replaceSelection("", null, "cut");
            });
          }
        }
        // iOS exposes the clipboard API, but seems to discard content inserted into it
        if (e.clipboardData && !ios) {
          e.preventDefault();
          e.clipboardData.clearData();
          e.clipboardData.setData("text/plain", lastCopied.join("\n"));
        } else {
          // Old-fashioned briefly-focus-a-textarea hack
          var kludge = hiddenTextarea(), te = kludge.firstChild;
          cm.display.lineSpace.insertBefore(kludge, cm.display.lineSpace.firstChild);
          te.value = lastCopied.join("\n");
          var hadFocus = document.activeElement;
          selectInput(te);
          setTimeout(function() {
            cm.display.lineSpace.removeChild(kludge);
            hadFocus.focus();
          }, 50);
        }
      }
      on(div, "copy", onCopyCut);
      on(div, "cut", onCopyCut);
    },

    prepareSelection: function() {
      var result = prepareSelection(this.cm, false);
      result.focus = this.cm.state.focused;
      return result;
    },

    showSelection: function(info) {
      if (!info || !this.cm.display.view.length) return;
      if (info.focus) this.showPrimarySelection();
      this.showMultipleSelections(info);
    },

    showPrimarySelection: function() {
      var sel = window.getSelection(), prim = this.cm.doc.sel.primary();
      var curAnchor = domToPos(this.cm, sel.anchorNode, sel.anchorOffset);
      var curFocus = domToPos(this.cm, sel.focusNode, sel.focusOffset);
      if (curAnchor && !curAnchor.bad && curFocus && !curFocus.bad &&
          cmp(minPos(curAnchor, curFocus), prim.from()) == 0 &&
          cmp(maxPos(curAnchor, curFocus), prim.to()) == 0)
        return;

      var start = posToDOM(this.cm, prim.from());
      var end = posToDOM(this.cm, prim.to());
      if (!start && !end) return;

      var view = this.cm.display.view;
      var old = sel.rangeCount && sel.getRangeAt(0);
      if (!start) {
        start = {node: view[0].measure.map[2], offset: 0};
      } else if (!end) { // FIXME dangerously hacky
        var measure = view[view.length - 1].measure;
        var map = measure.maps ? measure.maps[measure.maps.length - 1] : measure.map;
        end = {node: map[map.length - 1], offset: map[map.length - 2] - map[map.length - 3]};
      }

      try { var rng = range(start.node, start.offset, end.offset, end.node); }
      catch(e) {} // Our model of the DOM might be outdated, in which case the range we try to set can be impossible
      if (rng) {
        sel.removeAllRanges();
        sel.addRange(rng);
        if (old && sel.anchorNode == null) sel.addRange(old);
        else if (gecko) this.startGracePeriod();
      }
      this.rememberSelection();
    },

    startGracePeriod: function() {
      var input = this;
      clearTimeout(this.gracePeriod);
      this.gracePeriod = setTimeout(function() {
        input.gracePeriod = false;
        if (input.selectionChanged())
          input.cm.operation(function() { input.cm.curOp.selectionChanged = true; });
      }, 20);
    },

    showMultipleSelections: function(info) {
      removeChildrenAndAdd(this.cm.display.cursorDiv, info.cursors);
      removeChildrenAndAdd(this.cm.display.selectionDiv, info.selection);
    },

    rememberSelection: function() {
      var sel = window.getSelection();
      this.lastAnchorNode = sel.anchorNode; this.lastAnchorOffset = sel.anchorOffset;
      this.lastFocusNode = sel.focusNode; this.lastFocusOffset = sel.focusOffset;
    },

    selectionInEditor: function() {
      var sel = window.getSelection();
      if (!sel.rangeCount) return false;
      var node = sel.getRangeAt(0).commonAncestorContainer;
      return contains(this.div, node);
    },

    focus: function() {
      if (this.cm.options.readOnly != "nocursor") this.div.focus();
    },
    blur: function() { this.div.blur(); },
    getField: function() { return this.div; },

    supportsTouch: function() { return true; },

    receivedFocus: function() {
      var input = this;
      if (this.selectionInEditor())
        this.pollSelection();
      else
        runInOp(this.cm, function() { input.cm.curOp.selectionChanged = true; });

      function poll() {
        if (input.cm.state.focused) {
          input.pollSelection();
          input.polling.set(input.cm.options.pollInterval, poll);
        }
      }
      this.polling.set(this.cm.options.pollInterval, poll);
    },

    selectionChanged: function() {
      var sel = window.getSelection();
      return sel.anchorNode != this.lastAnchorNode || sel.anchorOffset != this.lastAnchorOffset ||
        sel.focusNode != this.lastFocusNode || sel.focusOffset != this.lastFocusOffset;
    },

    pollSelection: function() {
      if (!this.composing && !this.gracePeriod && this.selectionChanged()) {
        var sel = window.getSelection(), cm = this.cm;
        this.rememberSelection();
        var anchor = domToPos(cm, sel.anchorNode, sel.anchorOffset);
        var head = domToPos(cm, sel.focusNode, sel.focusOffset);
        if (anchor && head) runInOp(cm, function() {
          setSelection(cm.doc, simpleSelection(anchor, head), sel_dontScroll);
          if (anchor.bad || head.bad) cm.curOp.selectionChanged = true;
        });
      }
    },

    pollContent: function() {
      var cm = this.cm, display = cm.display, sel = cm.doc.sel.primary();
      var from = sel.from(), to = sel.to();
      if (from.line < display.viewFrom || to.line > display.viewTo - 1) return false;

      var fromIndex;
      if (from.line == display.viewFrom || (fromIndex = findViewIndex(cm, from.line)) == 0) {
        var fromLine = lineNo(display.view[0].line);
        var fromNode = display.view[0].node;
      } else {
        var fromLine = lineNo(display.view[fromIndex].line);
        var fromNode = display.view[fromIndex - 1].node.nextSibling;
      }
      var toIndex = findViewIndex(cm, to.line);
      if (toIndex == display.view.length - 1) {
        var toLine = display.viewTo - 1;
        var toNode = display.lineDiv.lastChild;
      } else {
        var toLine = lineNo(display.view[toIndex + 1].line) - 1;
        var toNode = display.view[toIndex + 1].node.previousSibling;
      }

      var newText = splitLines(domTextBetween(cm, fromNode, toNode, fromLine, toLine));
      var oldText = getBetween(cm.doc, Pos(fromLine, 0), Pos(toLine, getLine(cm.doc, toLine).text.length));
      while (newText.length > 1 && oldText.length > 1) {
        if (lst(newText) == lst(oldText)) { newText.pop(); oldText.pop(); toLine--; }
        else if (newText[0] == oldText[0]) { newText.shift(); oldText.shift(); fromLine++; }
        else break;
      }

      var cutFront = 0, cutEnd = 0;
      var newTop = newText[0], oldTop = oldText[0], maxCutFront = Math.min(newTop.length, oldTop.length);
      while (cutFront < maxCutFront && newTop.charCodeAt(cutFront) == oldTop.charCodeAt(cutFront))
        ++cutFront;
      var newBot = lst(newText), oldBot = lst(oldText);
      var maxCutEnd = Math.min(newBot.length - (newText.length == 1 ? cutFront : 0),
                               oldBot.length - (oldText.length == 1 ? cutFront : 0));
      while (cutEnd < maxCutEnd &&
             newBot.charCodeAt(newBot.length - cutEnd - 1) == oldBot.charCodeAt(oldBot.length - cutEnd - 1))
        ++cutEnd;

      newText[newText.length - 1] = newBot.slice(0, newBot.length - cutEnd);
      newText[0] = newText[0].slice(cutFront);

      var chFrom = Pos(fromLine, cutFront);
      var chTo = Pos(toLine, oldText.length ? lst(oldText).length - cutEnd : 0);
      if (newText.length > 1 || newText[0] || cmp(chFrom, chTo)) {
        replaceRange(cm.doc, newText, chFrom, chTo, "+input");
        return true;
      }
    },

    ensurePolled: function() {
      this.forceCompositionEnd();
    },
    reset: function() {
      this.forceCompositionEnd();
    },
    forceCompositionEnd: function() {
      if (!this.composing || this.composing.handled) return;
      this.applyComposition(this.composing);
      this.composing.handled = true;
      this.div.blur();
      this.div.focus();
    },
    applyComposition: function(composing) {
      if (composing.data && composing.data != composing.startData)
        operation(this.cm, applyTextInput)(this.cm, composing.data, 0, composing.sel);
    },

    setUneditable: function(node) {
      node.setAttribute("contenteditable", "false");
    },

    onKeyPress: function(e) {
      e.preventDefault();
      operation(this.cm, applyTextInput)(this.cm, String.fromCharCode(e.charCode == null ? e.keyCode : e.charCode), 0);
    },

    onContextMenu: nothing,
    resetPosition: nothing,

    needsContentAttribute: true
  }, ContentEditableInput.prototype);

  function posToDOM(cm, pos) {
    var view = findViewForLine(cm, pos.line);
    if (!view || view.hidden) return null;
    var line = getLine(cm.doc, pos.line);
    var info = mapFromLineView(view, line, pos.line);

    var order = getOrder(line), side = "left";
    if (order) {
      var partPos = getBidiPartAt(order, pos.ch);
      side = partPos % 2 ? "right" : "left";
    }
    var result = nodeAndOffsetInLineMap(info.map, pos.ch, side);
    result.offset = result.collapse == "right" ? result.end : result.start;
    return result;
  }

  function badPos(pos, bad) { if (bad) pos.bad = true; return pos; }

  function domToPos(cm, node, offset) {
    var lineNode;
    if (node == cm.display.lineDiv) {
      lineNode = cm.display.lineDiv.childNodes[offset];
      if (!lineNode) return badPos(cm.clipPos(Pos(cm.display.viewTo - 1)), true);
      node = null; offset = 0;
    } else {
      for (lineNode = node;; lineNode = lineNode.parentNode) {
        if (!lineNode || lineNode == cm.display.lineDiv) return null;
        if (lineNode.parentNode && lineNode.parentNode == cm.display.lineDiv) break;
      }
    }
    for (var i = 0; i < cm.display.view.length; i++) {
      var lineView = cm.display.view[i];
      if (lineView.node == lineNode)
        return locateNodeInLineView(lineView, node, offset);
    }
  }

  function locateNodeInLineView(lineView, node, offset) {
    var wrapper = lineView.text.firstChild, bad = false;
    if (!node || !contains(wrapper, node)) return badPos(Pos(lineNo(lineView.line), 0), true);
    if (node == wrapper) {
      bad = true;
      node = wrapper.childNodes[offset];
      offset = 0;
      if (!node) {
        var line = lineView.rest ? lst(lineView.rest) : lineView.line;
        return badPos(Pos(lineNo(line), line.text.length), bad);
      }
    }

    var textNode = node.nodeType == 3 ? node : null, topNode = node;
    if (!textNode && node.childNodes.length == 1 && node.firstChild.nodeType == 3) {
      textNode = node.firstChild;
      if (offset) offset = textNode.nodeValue.length;
    }
    while (topNode.parentNode != wrapper) topNode = topNode.parentNode;
    var measure = lineView.measure, maps = measure.maps;

    function find(textNode, topNode, offset) {
      for (var i = -1; i < (maps ? maps.length : 0); i++) {
        var map = i < 0 ? measure.map : maps[i];
        for (var j = 0; j < map.length; j += 3) {
          var curNode = map[j + 2];
          if (curNode == textNode || curNode == topNode) {
            var line = lineNo(i < 0 ? lineView.line : lineView.rest[i]);
            var ch = map[j] + offset;
            if (offset < 0 || curNode != textNode) ch = map[j + (offset ? 1 : 0)];
            return Pos(line, ch);
          }
        }
      }
    }
    var found = find(textNode, topNode, offset);
    if (found) return badPos(found, bad);

    // FIXME this is all really shaky. might handle the few cases it needs to handle, but likely to cause problems
    for (var after = topNode.nextSibling, dist = textNode ? textNode.nodeValue.length - offset : 0; after; after = after.nextSibling) {
      found = find(after, after.firstChild, 0);
      if (found)
        return badPos(Pos(found.line, found.ch - dist), bad);
      else
        dist += after.textContent.length;
    }
    for (var before = topNode.previousSibling, dist = offset; before; before = before.previousSibling) {
      found = find(before, before.firstChild, -1);
      if (found)
        return badPos(Pos(found.line, found.ch + dist), bad);
      else
        dist += after.textContent.length;
    }
  }

  function domTextBetween(cm, from, to, fromLine, toLine) {
    var text = "", closing = false;
    function recognizeMarker(id) { return function(marker) { return marker.id == id; }; }
    function walk(node) {
      if (node.nodeType == 1) {
        var cmText = node.getAttribute("cm-text");
        if (cmText != null) {
          if (cmText == "") cmText = node.textContent.replace(/\u200b/g, "");
          text += cmText;
          return;
        }
        var markerID = node.getAttribute("cm-marker"), range;
        if (markerID) {
          var found = cm.findMarks(Pos(fromLine, 0), Pos(toLine + 1, 0), recognizeMarker(+markerID));
          if (found.length && (range = found[0].find()))
            text += getBetween(cm.doc, range.from, range.to).join("\n");
          return;
        }
        if (node.getAttribute("contenteditable") == "false") return;
        for (var i = 0; i < node.childNodes.length; i++)
          walk(node.childNodes[i]);
        if (/^(pre|div|p)$/i.test(node.nodeName))
          closing = true;
      } else if (node.nodeType == 3) {
        var val = node.nodeValue;
        if (!val) return;
        if (closing) {
          text += "\n";
          closing = false;
        }
        text += val;
      }
    }
    for (;;) {
      walk(from);
      if (from == to) break;
      from = from.nextSibling;
    }
    return text;
  }

  CodeMirror.inputStyles = {"textarea": TextareaInput, "contenteditable": ContentEditableInput};

  // SELECTION / CURSOR

  // Selection objects are immutable. A new one is created every time
  // the selection changes. A selection is one or more non-overlapping
  // (and non-touching) ranges, sorted, and an integer that indicates
  // which one is the primary selection (the one that's scrolled into
  // view, that getCursor returns, etc).
  function Selection(ranges, primIndex) {
    this.ranges = ranges;
    this.primIndex = primIndex;
  }

  Selection.prototype = {
    primary: function() { return this.ranges[this.primIndex]; },
    equals: function(other) {
      if (other == this) return true;
      if (other.primIndex != this.primIndex || other.ranges.length != this.ranges.length) return false;
      for (var i = 0; i < this.ranges.length; i++) {
        var here = this.ranges[i], there = other.ranges[i];
        if (cmp(here.anchor, there.anchor) != 0 || cmp(here.head, there.head) != 0) return false;
      }
      return true;
    },
    deepCopy: function() {
      for (var out = [], i = 0; i < this.ranges.length; i++)
        out[i] = new Range(copyPos(this.ranges[i].anchor), copyPos(this.ranges[i].head));
      return new Selection(out, this.primIndex);
    },
    somethingSelected: function() {
      for (var i = 0; i < this.ranges.length; i++)
        if (!this.ranges[i].empty()) return true;
      return false;
    },
    contains: function(pos, end) {
      if (!end) end = pos;
      for (var i = 0; i < this.ranges.length; i++) {
        var range = this.ranges[i];
        if (cmp(end, range.from()) >= 0 && cmp(pos, range.to()) <= 0)
          return i;
      }
      return -1;
    }
  };

  function Range(anchor, head) {
    this.anchor = anchor; this.head = head;
  }

  Range.prototype = {
    from: function() { return minPos(this.anchor, this.head); },
    to: function() { return maxPos(this.anchor, this.head); },
    empty: function() {
      return this.head.line == this.anchor.line && this.head.ch == this.anchor.ch;
    }
  };

  // Take an unsorted, potentially overlapping set of ranges, and
  // build a selection out of it. 'Consumes' ranges array (modifying
  // it).
  function normalizeSelection(ranges, primIndex) {
    var prim = ranges[primIndex];
    ranges.sort(function(a, b) { return cmp(a.from(), b.from()); });
    primIndex = indexOf(ranges, prim);
    for (var i = 1; i < ranges.length; i++) {
      var cur = ranges[i], prev = ranges[i - 1];
      if (cmp(prev.to(), cur.from()) >= 0) {
        var from = minPos(prev.from(), cur.from()), to = maxPos(prev.to(), cur.to());
        var inv = prev.empty() ? cur.from() == cur.head : prev.from() == prev.head;
        if (i <= primIndex) --primIndex;
        ranges.splice(--i, 2, new Range(inv ? to : from, inv ? from : to));
      }
    }
    return new Selection(ranges, primIndex);
  }

  function simpleSelection(anchor, head) {
    return new Selection([new Range(anchor, head || anchor)], 0);
  }

  // Most of the external API clips given positions to make sure they
  // actually exist within the document.
  function clipLine(doc, n) {return Math.max(doc.first, Math.min(n, doc.first + doc.size - 1));}
  function clipPos(doc, pos) {
    if (pos.line < doc.first) return Pos(doc.first, 0);
    var last = doc.first + doc.size - 1;
    if (pos.line > last) return Pos(last, getLine(doc, last).text.length);
    return clipToLen(pos, getLine(doc, pos.line).text.length);
  }
  function clipToLen(pos, linelen) {
    var ch = pos.ch;
    if (ch == null || ch > linelen) return Pos(pos.line, linelen);
    else if (ch < 0) return Pos(pos.line, 0);
    else return pos;
  }
  function isLine(doc, l) {return l >= doc.first && l < doc.first + doc.size;}
  function clipPosArray(doc, array) {
    for (var out = [], i = 0; i < array.length; i++) out[i] = clipPos(doc, array[i]);
    return out;
  }

  // SELECTION UPDATES

  // The 'scroll' parameter given to many of these indicated whether
  // the new cursor position should be scrolled into view after
  // modifying the selection.

  // If shift is held or the extend flag is set, extends a range to
  // include a given position (and optionally a second position).
  // Otherwise, simply returns the range between the given positions.
  // Used for cursor motion and such.
  function extendRange(doc, range, head, other) {
    if (doc.cm && doc.cm.display.shift || doc.extend) {
      var anchor = range.anchor;
      if (other) {
        var posBefore = cmp(head, anchor) < 0;
        if (posBefore != (cmp(other, anchor) < 0)) {
          anchor = head;
          head = other;
        } else if (posBefore != (cmp(head, other) < 0)) {
          head = other;
        }
      }
      return new Range(anchor, head);
    } else {
      return new Range(other || head, head);
    }
  }

  // Extend the primary selection range, discard the rest.
  function extendSelection(doc, head, other, options) {
    setSelection(doc, new Selection([extendRange(doc, doc.sel.primary(), head, other)], 0), options);
  }

  // Extend all selections (pos is an array of selections with length
  // equal the number of selections)
  function extendSelections(doc, heads, options) {
    for (var out = [], i = 0; i < doc.sel.ranges.length; i++)
      out[i] = extendRange(doc, doc.sel.ranges[i], heads[i], null);
    var newSel = normalizeSelection(out, doc.sel.primIndex);
    setSelection(doc, newSel, options);
  }

  // Updates a single range in the selection.
  function replaceOneSelection(doc, i, range, options) {
    var ranges = doc.sel.ranges.slice(0);
    ranges[i] = range;
    setSelection(doc, normalizeSelection(ranges, doc.sel.primIndex), options);
  }

  // Reset the selection to a single range.
  function setSimpleSelection(doc, anchor, head, options) {
    setSelection(doc, simpleSelection(anchor, head), options);
  }

  // Give beforeSelectionChange handlers a change to influence a
  // selection update.
  function filterSelectionChange(doc, sel) {
    var obj = {
      ranges: sel.ranges,
      update: function(ranges) {
        this.ranges = [];
        for (var i = 0; i < ranges.length; i++)
          this.ranges[i] = new Range(clipPos(doc, ranges[i].anchor),
                                     clipPos(doc, ranges[i].head));
      }
    };
    signal(doc, "beforeSelectionChange", doc, obj);
    if (doc.cm) signal(doc.cm, "beforeSelectionChange", doc.cm, obj);
    if (obj.ranges != sel.ranges) return normalizeSelection(obj.ranges, obj.ranges.length - 1);
    else return sel;
  }

  function setSelectionReplaceHistory(doc, sel, options) {
    var done = doc.history.done, last = lst(done);
    if (last && last.ranges) {
      done[done.length - 1] = sel;
      setSelectionNoUndo(doc, sel, options);
    } else {
      setSelection(doc, sel, options);
    }
  }

  // Set a new selection.
  function setSelection(doc, sel, options) {
    setSelectionNoUndo(doc, sel, options);
    addSelectionToHistory(doc, doc.sel, doc.cm ? doc.cm.curOp.id : NaN, options);
  }

  function setSelectionNoUndo(doc, sel, options) {
    if (hasHandler(doc, "beforeSelectionChange") || doc.cm && hasHandler(doc.cm, "beforeSelectionChange"))
      sel = filterSelectionChange(doc, sel);

    var bias = options && options.bias ||
      (cmp(sel.primary().head, doc.sel.primary().head) < 0 ? -1 : 1);
    setSelectionInner(doc, skipAtomicInSelection(doc, sel, bias, true));

    if (!(options && options.scroll === false) && doc.cm)
      ensureCursorVisible(doc.cm);
  }

  function setSelectionInner(doc, sel) {
    if (sel.equals(doc.sel)) return;

    doc.sel = sel;

    if (doc.cm) {
      doc.cm.curOp.updateInput = doc.cm.curOp.selectionChanged = true;
      signalCursorActivity(doc.cm);
    }
    signalLater(doc, "cursorActivity", doc);
  }

  // Verify that the selection does not partially select any atomic
  // marked ranges.
  function reCheckSelection(doc) {
    setSelectionInner(doc, skipAtomicInSelection(doc, doc.sel, null, false), sel_dontScroll);
  }

  // Return a selection that does not partially select any atomic
  // ranges.
  function skipAtomicInSelection(doc, sel, bias, mayClear) {
    var out;
    for (var i = 0; i < sel.ranges.length; i++) {
      var range = sel.ranges[i];
      var newAnchor = skipAtomic(doc, range.anchor, bias, mayClear);
      var newHead = skipAtomic(doc, range.head, bias, mayClear);
      if (out || newAnchor != range.anchor || newHead != range.head) {
        if (!out) out = sel.ranges.slice(0, i);
        out[i] = new Range(newAnchor, newHead);
      }
    }
    return out ? normalizeSelection(out, sel.primIndex) : sel;
  }

  // Ensure a given position is not inside an atomic range.
  function skipAtomic(doc, pos, bias, mayClear) {
    var flipped = false, curPos = pos;
    var dir = bias || 1;
    doc.cantEdit = false;
    search: for (;;) {
      var line = getLine(doc, curPos.line);
      if (line.markedSpans) {
        for (var i = 0; i < line.markedSpans.length; ++i) {
          var sp = line.markedSpans[i], m = sp.marker;
          if ((sp.from == null || (m.inclusiveLeft ? sp.from <= curPos.ch : sp.from < curPos.ch)) &&
              (sp.to == null || (m.inclusiveRight ? sp.to >= curPos.ch : sp.to > curPos.ch))) {
            if (mayClear) {
              signal(m, "beforeCursorEnter");
              if (m.explicitlyCleared) {
                if (!line.markedSpans) break;
                else {--i; continue;}
              }
            }
            if (!m.atomic) continue;
            var newPos = m.find(dir < 0 ? -1 : 1);
            if (cmp(newPos, curPos) == 0) {
              newPos.ch += dir;
              if (newPos.ch < 0) {
                if (newPos.line > doc.first) newPos = clipPos(doc, Pos(newPos.line - 1));
                else newPos = null;
              } else if (newPos.ch > line.text.length) {
                if (newPos.line < doc.first + doc.size - 1) newPos = Pos(newPos.line + 1, 0);
                else newPos = null;
              }
              if (!newPos) {
                if (flipped) {
                  // Driven in a corner -- no valid cursor position found at all
                  // -- try again *with* clearing, if we didn't already
                  if (!mayClear) return skipAtomic(doc, pos, bias, true);
                  // Otherwise, turn off editing until further notice, and return the start of the doc
                  doc.cantEdit = true;
                  return Pos(doc.first, 0);
                }
                flipped = true; newPos = pos; dir = -dir;
              }
            }
            curPos = newPos;
            continue search;
          }
        }
      }
      return curPos;
    }
  }

  // SELECTION DRAWING

  function updateSelection(cm) {
    cm.display.input.showSelection(cm.display.input.prepareSelection());
  }

  function prepareSelection(cm, primary) {
    var doc = cm.doc, result = {};
    var curFragment = result.cursors = document.createDocumentFragment();
    var selFragment = result.selection = document.createDocumentFragment();

    for (var i = 0; i < doc.sel.ranges.length; i++) {
      if (primary === false && i == doc.sel.primIndex) continue;
      var range = doc.sel.ranges[i];
      var collapsed = range.empty();
      if (collapsed || cm.options.showCursorWhenSelecting)
        drawSelectionCursor(cm, range, curFragment);
      if (!collapsed)
        drawSelectionRange(cm, range, selFragment);
    }
    return result;
  }

  // Draws a cursor for the given range
  function drawSelectionCursor(cm, range, output) {
    var pos = cursorCoords(cm, range.head, "div", null, null, !cm.options.singleCursorHeightPerLine);

    var cursor = output.appendChild(elt("div", "\u00a0", "CodeMirror-cursor"));
    cursor.style.left = pos.left + "px";
    cursor.style.top = pos.top + "px";
    cursor.style.height = Math.max(0, pos.bottom - pos.top) * cm.options.cursorHeight + "px";

    if (pos.other) {
      // Secondary cursor, shown when on a 'jump' in bi-directional text
      var otherCursor = output.appendChild(elt("div", "\u00a0", "CodeMirror-cursor CodeMirror-secondarycursor"));
      otherCursor.style.display = "";
      otherCursor.style.left = pos.other.left + "px";
      otherCursor.style.top = pos.other.top + "px";
      otherCursor.style.height = (pos.other.bottom - pos.other.top) * .85 + "px";
    }
  }

  // Draws the given range as a highlighted selection
  function drawSelectionRange(cm, range, output) {
    var display = cm.display, doc = cm.doc;
    var fragment = document.createDocumentFragment();
    var padding = paddingH(cm.display), leftSide = padding.left;
    var rightSide = Math.max(display.sizerWidth, displayWidth(cm) - display.sizer.offsetLeft) - padding.right;

    function add(left, top, width, bottom) {
      if (top < 0) top = 0;
      top = Math.round(top);
      bottom = Math.round(bottom);
      fragment.appendChild(elt("div", null, "CodeMirror-selected", "position: absolute; left: " + left +
                               "px; top: " + top + "px; width: " + (width == null ? rightSide - left : width) +
                               "px; height: " + (bottom - top) + "px"));
    }

    function drawForLine(line, fromArg, toArg) {
      var lineObj = getLine(doc, line);
      var lineLen = lineObj.text.length;
      var start, end;
      function coords(ch, bias) {
        return charCoords(cm, Pos(line, ch), "div", lineObj, bias);
      }

      iterateBidiSections(getOrder(lineObj), fromArg || 0, toArg == null ? lineLen : toArg, function(from, to, dir) {
        var leftPos = coords(from, "left"), rightPos, left, right;
        if (from == to) {
          rightPos = leftPos;
          left = right = leftPos.left;
        } else {
          rightPos = coords(to - 1, "right");
          if (dir == "rtl") { var tmp = leftPos; leftPos = rightPos; rightPos = tmp; }
          left = leftPos.left;
          right = rightPos.right;
        }
        if (fromArg == null && from == 0) left = leftSide;
        if (rightPos.top - leftPos.top > 3) { // Different lines, draw top part
          add(left, leftPos.top, null, leftPos.bottom);
          left = leftSide;
          if (leftPos.bottom < rightPos.top) add(left, leftPos.bottom, null, rightPos.top);
        }
        if (toArg == null && to == lineLen) right = rightSide;
        if (!start || leftPos.top < start.top || leftPos.top == start.top && leftPos.left < start.left)
          start = leftPos;
        if (!end || rightPos.bottom > end.bottom || rightPos.bottom == end.bottom && rightPos.right > end.right)
          end = rightPos;
        if (left < leftSide + 1) left = leftSide;
        add(left, rightPos.top, right - left, rightPos.bottom);
      });
      return {start: start, end: end};
    }

    var sFrom = range.from(), sTo = range.to();
    if (sFrom.line == sTo.line) {
      drawForLine(sFrom.line, sFrom.ch, sTo.ch);
    } else {
      var fromLine = getLine(doc, sFrom.line), toLine = getLine(doc, sTo.line);
      var singleVLine = visualLine(fromLine) == visualLine(toLine);
      var leftEnd = drawForLine(sFrom.line, sFrom.ch, singleVLine ? fromLine.text.length + 1 : null).end;
      var rightStart = drawForLine(sTo.line, singleVLine ? 0 : null, sTo.ch).start;
      if (singleVLine) {
        if (leftEnd.top < rightStart.top - 2) {
          add(leftEnd.right, leftEnd.top, null, leftEnd.bottom);
          add(leftSide, rightStart.top, rightStart.left, rightStart.bottom);
        } else {
          add(leftEnd.right, leftEnd.top, rightStart.left - leftEnd.right, leftEnd.bottom);
        }
      }
      if (leftEnd.bottom < rightStart.top)
        add(leftSide, leftEnd.bottom, null, rightStart.top);
    }

    output.appendChild(fragment);
  }

  // Cursor-blinking
  function restartBlink(cm) {
    if (!cm.state.focused) return;
    var display = cm.display;
    clearInterval(display.blinker);
    var on = true;
    display.cursorDiv.style.visibility = "";
    if (cm.options.cursorBlinkRate > 0)
      display.blinker = setInterval(function() {
        display.cursorDiv.style.visibility = (on = !on) ? "" : "hidden";
      }, cm.options.cursorBlinkRate);
    else if (cm.options.cursorBlinkRate < 0)
      display.cursorDiv.style.visibility = "hidden";
  }

  // HIGHLIGHT WORKER

  function startWorker(cm, time) {
    if (cm.doc.mode.startState && cm.doc.frontier < cm.display.viewTo)
      cm.state.highlight.set(time, bind(highlightWorker, cm));
  }

  function highlightWorker(cm) {
    var doc = cm.doc;
    if (doc.frontier < doc.first) doc.frontier = doc.first;
    if (doc.frontier >= cm.display.viewTo) return;
    var end = +new Date + cm.options.workTime;
    var state = copyState(doc.mode, getStateBefore(cm, doc.frontier));
    var changedLines = [];

    doc.iter(doc.frontier, Math.min(doc.first + doc.size, cm.display.viewTo + 500), function(line) {
      if (doc.frontier >= cm.display.viewFrom) { // Visible
        var oldStyles = line.styles;
        var highlighted = highlightLine(cm, line, state, true);
        line.styles = highlighted.styles;
        var oldCls = line.styleClasses, newCls = highlighted.classes;
        if (newCls) line.styleClasses = newCls;
        else if (oldCls) line.styleClasses = null;
        var ischange = !oldStyles || oldStyles.length != line.styles.length ||
          oldCls != newCls && (!oldCls || !newCls || oldCls.bgClass != newCls.bgClass || oldCls.textClass != newCls.textClass);
        for (var i = 0; !ischange && i < oldStyles.length; ++i) ischange = oldStyles[i] != line.styles[i];
        if (ischange) changedLines.push(doc.frontier);
        line.stateAfter = copyState(doc.mode, state);
      } else {
        processLine(cm, line.text, state);
        line.stateAfter = doc.frontier % 5 == 0 ? copyState(doc.mode, state) : null;
      }
      ++doc.frontier;
      if (+new Date > end) {
        startWorker(cm, cm.options.workDelay);
        return true;
      }
    });
    if (changedLines.length) runInOp(cm, function() {
      for (var i = 0; i < changedLines.length; i++)
        regLineChange(cm, changedLines[i], "text");
    });
  }

  // Finds the line to start with when starting a parse. Tries to
  // find a line with a stateAfter, so that it can start with a
  // valid state. If that fails, it returns the line with the
  // smallest indentation, which tends to need the least context to
  // parse correctly.
  function findStartLine(cm, n, precise) {
    var minindent, minline, doc = cm.doc;
    var lim = precise ? -1 : n - (cm.doc.mode.innerMode ? 1000 : 100);
    for (var search = n; search > lim; --search) {
      if (search <= doc.first) return doc.first;
      var line = getLine(doc, search - 1);
      if (line.stateAfter && (!precise || search <= doc.frontier)) return search;
      var indented = countColumn(line.text, null, cm.options.tabSize);
      if (minline == null || minindent > indented) {
        minline = search - 1;
        minindent = indented;
      }
    }
    return minline;
  }

  function getStateBefore(cm, n, precise) {
    var doc = cm.doc, display = cm.display;
    if (!doc.mode.startState) return true;
    var pos = findStartLine(cm, n, precise), state = pos > doc.first && getLine(doc, pos-1).stateAfter;
    if (!state) state = startState(doc.mode);
    else state = copyState(doc.mode, state);
    doc.iter(pos, n, function(line) {
      processLine(cm, line.text, state);
      var save = pos == n - 1 || pos % 5 == 0 || pos >= display.viewFrom && pos < display.viewTo;
      line.stateAfter = save ? copyState(doc.mode, state) : null;
      ++pos;
    });
    if (precise) doc.frontier = pos;
    return state;
  }

  // POSITION MEASUREMENT

  function paddingTop(display) {return display.lineSpace.offsetTop;}
  function paddingVert(display) {return display.mover.offsetHeight - display.lineSpace.offsetHeight;}
  function paddingH(display) {
    if (display.cachedPaddingH) return display.cachedPaddingH;
    var e = removeChildrenAndAdd(display.measure, elt("pre", "x"));
    var style = window.getComputedStyle ? window.getComputedStyle(e) : e.currentStyle;
    var data = {left: parseInt(style.paddingLeft), right: parseInt(style.paddingRight)};
    if (!isNaN(data.left) && !isNaN(data.right)) display.cachedPaddingH = data;
    return data;
  }

  function scrollGap(cm) { return scrollerGap - cm.display.nativeBarWidth; }
  function displayWidth(cm) {
    return cm.display.scroller.clientWidth - scrollGap(cm) - cm.display.barWidth;
  }
  function displayHeight(cm) {
    return cm.display.scroller.clientHeight - scrollGap(cm) - cm.display.barHeight;
  }

  // Ensure the lineView.wrapping.heights array is populated. This is
  // an array of bottom offsets for the lines that make up a drawn
  // line. When lineWrapping is on, there might be more than one
  // height.
  function ensureLineHeights(cm, lineView, rect) {
    var wrapping = cm.options.lineWrapping;
    var curWidth = wrapping && displayWidth(cm);
    if (!lineView.measure.heights || wrapping && lineView.measure.width != curWidth) {
      var heights = lineView.measure.heights = [];
      if (wrapping) {
        lineView.measure.width = curWidth;
        var rects = lineView.text.firstChild.getClientRects();
        for (var i = 0; i < rects.length - 1; i++) {
          var cur = rects[i], next = rects[i + 1];
          if (Math.abs(cur.bottom - next.bottom) > 2)
            heights.push((cur.bottom + next.top) / 2 - rect.top);
        }
      }
      heights.push(rect.bottom - rect.top);
    }
  }

  // Find a line map (mapping character offsets to text nodes) and a
  // measurement cache for the given line number. (A line view might
  // contain multiple lines when collapsed ranges are present.)
  function mapFromLineView(lineView, line, lineN) {
    if (lineView.line == line)
      return {map: lineView.measure.map, cache: lineView.measure.cache};
    for (var i = 0; i < lineView.rest.length; i++)
      if (lineView.rest[i] == line)
        return {map: lineView.measure.maps[i], cache: lineView.measure.caches[i]};
    for (var i = 0; i < lineView.rest.length; i++)
      if (lineNo(lineView.rest[i]) > lineN)
        return {map: lineView.measure.maps[i], cache: lineView.measure.caches[i], before: true};
  }

  // Render a line into the hidden node display.externalMeasured. Used
  // when measurement is needed for a line that's not in the viewport.
  function updateExternalMeasurement(cm, line) {
    line = visualLine(line);
    var lineN = lineNo(line);
    var view = cm.display.externalMeasured = new LineView(cm.doc, line, lineN);
    view.lineN = lineN;
    var built = view.built = buildLineContent(cm, view);
    view.text = built.pre;
    removeChildrenAndAdd(cm.display.lineMeasure, built.pre);
    return view;
  }

  // Get a {top, bottom, left, right} box (in line-local coordinates)
  // for a given character.
  function measureChar(cm, line, ch, bias) {
    return measureCharPrepared(cm, prepareMeasureForLine(cm, line), ch, bias);
  }

  // Find a line view that corresponds to the given line number.
  function findViewForLine(cm, lineN) {
    if (lineN >= cm.display.viewFrom && lineN < cm.display.viewTo)
      return cm.display.view[findViewIndex(cm, lineN)];
    var ext = cm.display.externalMeasured;
    if (ext && lineN >= ext.lineN && lineN < ext.lineN + ext.size)
      return ext;
  }

  // Measurement can be split in two steps, the set-up work that
  // applies to the whole line, and the measurement of the actual
  // character. Functions like coordsChar, that need to do a lot of
  // measurements in a row, can thus ensure that the set-up work is
  // only done once.
  function prepareMeasureForLine(cm, line) {
    var lineN = lineNo(line);
    var view = findViewForLine(cm, lineN);
    if (view && !view.text)
      view = null;
    else if (view && view.changes)
      updateLineForChanges(cm, view, lineN, getDimensions(cm));
    if (!view)
      view = updateExternalMeasurement(cm, line);

    var info = mapFromLineView(view, line, lineN);
    return {
      line: line, view: view, rect: null,
      map: info.map, cache: info.cache, before: info.before,
      hasHeights: false
    };
  }

  // Given a prepared measurement object, measures the position of an
  // actual character (or fetches it from the cache).
  function measureCharPrepared(cm, prepared, ch, bias, varHeight) {
    if (prepared.before) ch = -1;
    var key = ch + (bias || ""), found;
    if (prepared.cache.hasOwnProperty(key)) {
      found = prepared.cache[key];
    } else {
      if (!prepared.rect)
        prepared.rect = prepared.view.text.getBoundingClientRect();
      if (!prepared.hasHeights) {
        ensureLineHeights(cm, prepared.view, prepared.rect);
        prepared.hasHeights = true;
      }
      found = measureCharInner(cm, prepared, ch, bias);
      if (!found.bogus) prepared.cache[key] = found;
    }
    return {left: found.left, right: found.right,
            top: varHeight ? found.rtop : found.top,
            bottom: varHeight ? found.rbottom : found.bottom};
  }

  var nullRect = {left: 0, right: 0, top: 0, bottom: 0};

  function nodeAndOffsetInLineMap(map, ch, bias) {
    var node, start, end, collapse;
    // First, search the line map for the text node corresponding to,
    // or closest to, the target character.
    for (var i = 0; i < map.length; i += 3) {
      var mStart = map[i], mEnd = map[i + 1];
      if (ch < mStart) {
        start = 0; end = 1;
        collapse = "left";
      } else if (ch < mEnd) {
        start = ch - mStart;
        end = start + 1;
      } else if (i == map.length - 3 || ch == mEnd && map[i + 3] > ch) {
        end = mEnd - mStart;
        start = end - 1;
        if (ch >= mEnd) collapse = "right";
      }
      if (start != null) {
        node = map[i + 2];
        if (mStart == mEnd && bias == (node.insertLeft ? "left" : "right"))
          collapse = bias;
        if (bias == "left" && start == 0)
          while (i && map[i - 2] == map[i - 3] && map[i - 1].insertLeft) {
            node = map[(i -= 3) + 2];
            collapse = "left";
          }
        if (bias == "right" && start == mEnd - mStart)
          while (i < map.length - 3 && map[i + 3] == map[i + 4] && !map[i + 5].insertLeft) {
            node = map[(i += 3) + 2];
            collapse = "right";
          }
        break;
      }
    }
    return {node: node, start: start, end: end, collapse: collapse, coverStart: mStart, coverEnd: mEnd};
  }

  function measureCharInner(cm, prepared, ch, bias) {
    var place = nodeAndOffsetInLineMap(prepared.map, ch, bias);
    var node = place.node, start = place.start, end = place.end, collapse = place.collapse;

    var rect;
    if (node.nodeType == 3) { // If it is a text node, use a range to retrieve the coordinates.
      for (var i = 0; i < 4; i++) { // Retry a maximum of 4 times when nonsense rectangles are returned
        while (start && isExtendingChar(prepared.line.text.charAt(place.coverStart + start))) --start;
        while (place.coverStart + end < place.coverEnd && isExtendingChar(prepared.line.text.charAt(place.coverStart + end))) ++end;
        if (ie && ie_version < 9 && start == 0 && end == place.coverEnd - place.coverStart) {
          rect = node.parentNode.getBoundingClientRect();
        } else if (ie && cm.options.lineWrapping) {
          var rects = range(node, start, end).getClientRects();
          if (rects.length)
            rect = rects[bias == "right" ? rects.length - 1 : 0];
          else
            rect = nullRect;
        } else {
          rect = range(node, start, end).getBoundingClientRect() || nullRect;
        }
        if (rect.left || rect.right || start == 0) break;
        end = start;
        start = start - 1;
        collapse = "right";
      }
      if (ie && ie_version < 11) rect = maybeUpdateRectForZooming(cm.display.measure, rect);
    } else { // If it is a widget, simply get the box for the whole widget.
      if (start > 0) collapse = bias = "right";
      var rects;
      if (cm.options.lineWrapping && (rects = node.getClientRects()).length > 1)
        rect = rects[bias == "right" ? rects.length - 1 : 0];
      else
        rect = node.getBoundingClientRect();
    }
    if (ie && ie_version < 9 && !start && (!rect || !rect.left && !rect.right)) {
      var rSpan = node.parentNode.getClientRects()[0];
      if (rSpan)
        rect = {left: rSpan.left, right: rSpan.left + charWidth(cm.display), top: rSpan.top, bottom: rSpan.bottom};
      else
        rect = nullRect;
    }

    var rtop = rect.top - prepared.rect.top, rbot = rect.bottom - prepared.rect.top;
    var mid = (rtop + rbot) / 2;
    var heights = prepared.view.measure.heights;
    for (var i = 0; i < heights.length - 1; i++)
      if (mid < heights[i]) break;
    var top = i ? heights[i - 1] : 0, bot = heights[i];
    var result = {left: (collapse == "right" ? rect.right : rect.left) - prepared.rect.left,
                  right: (collapse == "left" ? rect.left : rect.right) - prepared.rect.left,
                  top: top, bottom: bot};
    if (!rect.left && !rect.right) result.bogus = true;
    if (!cm.options.singleCursorHeightPerLine) { result.rtop = rtop; result.rbottom = rbot; }

    return result;
  }

  // Work around problem with bounding client rects on ranges being
  // returned incorrectly when zoomed on IE10 and below.
  function maybeUpdateRectForZooming(measure, rect) {
    if (!window.screen || screen.logicalXDPI == null ||
        screen.logicalXDPI == screen.deviceXDPI || !hasBadZoomedRects(measure))
      return rect;
    var scaleX = screen.logicalXDPI / screen.deviceXDPI;
    var scaleY = screen.logicalYDPI / screen.deviceYDPI;
    return {left: rect.left * scaleX, right: rect.right * scaleX,
            top: rect.top * scaleY, bottom: rect.bottom * scaleY};
  }

  function clearLineMeasurementCacheFor(lineView) {
    if (lineView.measure) {
      lineView.measure.cache = {};
      lineView.measure.heights = null;
      if (lineView.rest) for (var i = 0; i < lineView.rest.length; i++)
        lineView.measure.caches[i] = {};
    }
  }

  function clearLineMeasurementCache(cm) {
    cm.display.externalMeasure = null;
    removeChildren(cm.display.lineMeasure);
    for (var i = 0; i < cm.display.view.length; i++)
      clearLineMeasurementCacheFor(cm.display.view[i]);
  }

  function clearCaches(cm) {
    clearLineMeasurementCache(cm);
    cm.display.cachedCharWidth = cm.display.cachedTextHeight = cm.display.cachedPaddingH = null;
    if (!cm.options.lineWrapping) cm.display.maxLineChanged = true;
    cm.display.lineNumChars = null;
  }

  function pageScrollX() { return window.pageXOffset || (document.documentElement || document.body).scrollLeft; }
  function pageScrollY() { return window.pageYOffset || (document.documentElement || document.body).scrollTop; }

  // Converts a {top, bottom, left, right} box from line-local
  // coordinates into another coordinate system. Context may be one of
  // "line", "div" (display.lineDiv), "local"/null (editor), "window",
  // or "page".
  function intoCoordSystem(cm, lineObj, rect, context) {
    if (lineObj.widgets) for (var i = 0; i < lineObj.widgets.length; ++i) if (lineObj.widgets[i].above) {
      var size = widgetHeight(lineObj.widgets[i]);
      rect.top += size; rect.bottom += size;
    }
    if (context == "line") return rect;
    if (!context) context = "local";
    var yOff = heightAtLine(lineObj);
    if (context == "local") yOff += paddingTop(cm.display);
    else yOff -= cm.display.viewOffset;
    if (context == "page" || context == "window") {
      var lOff = cm.display.lineSpace.getBoundingClientRect();
      yOff += lOff.top + (context == "window" ? 0 : pageScrollY());
      var xOff = lOff.left + (context == "window" ? 0 : pageScrollX());
      rect.left += xOff; rect.right += xOff;
    }
    rect.top += yOff; rect.bottom += yOff;
    return rect;
  }

  // Coverts a box from "div" coords to another coordinate system.
  // Context may be "window", "page", "div", or "local"/null.
  function fromCoordSystem(cm, coords, context) {
    if (context == "div") return coords;
    var left = coords.left, top = coords.top;
    // First move into "page" coordinate system
    if (context == "page") {
      left -= pageScrollX();
      top -= pageScrollY();
    } else if (context == "local" || !context) {
      var localBox = cm.display.sizer.getBoundingClientRect();
      left += localBox.left;
      top += localBox.top;
    }

    var lineSpaceBox = cm.display.lineSpace.getBoundingClientRect();
    return {left: left - lineSpaceBox.left, top: top - lineSpaceBox.top};
  }

  function charCoords(cm, pos, context, lineObj, bias) {
    if (!lineObj) lineObj = getLine(cm.doc, pos.line);
    return intoCoordSystem(cm, lineObj, measureChar(cm, lineObj, pos.ch, bias), context);
  }

  // Returns a box for a given cursor position, which may have an
  // 'other' property containing the position of the secondary cursor
  // on a bidi boundary.
  function cursorCoords(cm, pos, context, lineObj, preparedMeasure, varHeight) {
    lineObj = lineObj || getLine(cm.doc, pos.line);
    if (!preparedMeasure) preparedMeasure = prepareMeasureForLine(cm, lineObj);
    function get(ch, right) {
      var m = measureCharPrepared(cm, preparedMeasure, ch, right ? "right" : "left", varHeight);
      if (right) m.left = m.right; else m.right = m.left;
      return intoCoordSystem(cm, lineObj, m, context);
    }
    function getBidi(ch, partPos) {
      var part = order[partPos], right = part.level % 2;
      if (ch == bidiLeft(part) && partPos && part.level < order[partPos - 1].level) {
        part = order[--partPos];
        ch = bidiRight(part) - (part.level % 2 ? 0 : 1);
        right = true;
      } else if (ch == bidiRight(part) && partPos < order.length - 1 && part.level < order[partPos + 1].level) {
        part = order[++partPos];
        ch = bidiLeft(part) - part.level % 2;
        right = false;
      }
      if (right && ch == part.to && ch > part.from) return get(ch - 1);
      return get(ch, right);
    }
    var order = getOrder(lineObj), ch = pos.ch;
    if (!order) return get(ch);
    var partPos = getBidiPartAt(order, ch);
    var val = getBidi(ch, partPos);
    if (bidiOther != null) val.other = getBidi(ch, bidiOther);
    return val;
  }

  // Used to cheaply estimate the coordinates for a position. Used for
  // intermediate scroll updates.
  function estimateCoords(cm, pos) {
    var left = 0, pos = clipPos(cm.doc, pos);
    if (!cm.options.lineWrapping) left = charWidth(cm.display) * pos.ch;
    var lineObj = getLine(cm.doc, pos.line);
    var top = heightAtLine(lineObj) + paddingTop(cm.display);
    return {left: left, right: left, top: top, bottom: top + lineObj.height};
  }

  // Positions returned by coordsChar contain some extra information.
  // xRel is the relative x position of the input coordinates compared
  // to the found position (so xRel > 0 means the coordinates are to
  // the right of the character position, for example). When outside
  // is true, that means the coordinates lie outside the line's
  // vertical range.
  function PosWithInfo(line, ch, outside, xRel) {
    var pos = Pos(line, ch);
    pos.xRel = xRel;
    if (outside) pos.outside = true;
    return pos;
  }

  // Compute the character position closest to the given coordinates.
  // Input must be lineSpace-local ("div" coordinate system).
  function coordsChar(cm, x, y) {
    var doc = cm.doc;
    y += cm.display.viewOffset;
    if (y < 0) return PosWithInfo(doc.first, 0, true, -1);
    var lineN = lineAtHeight(doc, y), last = doc.first + doc.size - 1;
    if (lineN > last)
      return PosWithInfo(doc.first + doc.size - 1, getLine(doc, last).text.length, true, 1);
    if (x < 0) x = 0;

    var lineObj = getLine(doc, lineN);
    for (;;) {
      var found = coordsCharInner(cm, lineObj, lineN, x, y);
      var merged = collapsedSpanAtEnd(lineObj);
      var mergedPos = merged && merged.find(0, true);
      if (merged && (found.ch > mergedPos.from.ch || found.ch == mergedPos.from.ch && found.xRel > 0))
        lineN = lineNo(lineObj = mergedPos.to.line);
      else
        return found;
    }
  }

  function coordsCharInner(cm, lineObj, lineNo, x, y) {
    var innerOff = y - heightAtLine(lineObj);
    var wrongLine = false, adjust = 2 * cm.display.wrapper.clientWidth;
    var preparedMeasure = prepareMeasureForLine(cm, lineObj);

    function getX(ch) {
      var sp = cursorCoords(cm, Pos(lineNo, ch), "line", lineObj, preparedMeasure);
      wrongLine = true;
      if (innerOff > sp.bottom) return sp.left - adjust;
      else if (innerOff < sp.top) return sp.left + adjust;
      else wrongLine = false;
      return sp.left;
    }

    var bidi = getOrder(lineObj), dist = lineObj.text.length;
    var from = lineLeft(lineObj), to = lineRight(lineObj);
    var fromX = getX(from), fromOutside = wrongLine, toX = getX(to), toOutside = wrongLine;

    if (x > toX) return PosWithInfo(lineNo, to, toOutside, 1);
    // Do a binary search between these bounds.
    for (;;) {
      if (bidi ? to == from || to == moveVisually(lineObj, from, 1) : to - from <= 1) {
        var ch = x < fromX || x - fromX <= toX - x ? from : to;
        var xDiff = x - (ch == from ? fromX : toX);
        while (isExtendingChar(lineObj.text.charAt(ch))) ++ch;
        var pos = PosWithInfo(lineNo, ch, ch == from ? fromOutside : toOutside,
                              xDiff < -1 ? -1 : xDiff > 1 ? 1 : 0);
        return pos;
      }
      var step = Math.ceil(dist / 2), middle = from + step;
      if (bidi) {
        middle = from;
        for (var i = 0; i < step; ++i) middle = moveVisually(lineObj, middle, 1);
      }
      var middleX = getX(middle);
      if (middleX > x) {to = middle; toX = middleX; if (toOutside = wrongLine) toX += 1000; dist = step;}
      else {from = middle; fromX = middleX; fromOutside = wrongLine; dist -= step;}
    }
  }

  var measureText;
  // Compute the default text height.
  function textHeight(display) {
    if (display.cachedTextHeight != null) return display.cachedTextHeight;
    if (measureText == null) {
      measureText = elt("pre");
      // Measure a bunch of lines, for browsers that compute
      // fractional heights.
      for (var i = 0; i < 49; ++i) {
        measureText.appendChild(document.createTextNode("x"));
        measureText.appendChild(elt("br"));
      }
      measureText.appendChild(document.createTextNode("x"));
    }
    removeChildrenAndAdd(display.measure, measureText);
    var height = measureText.offsetHeight / 50;
    if (height > 3) display.cachedTextHeight = height;
    removeChildren(display.measure);
    return height || 1;
  }

  // Compute the default character width.
  function charWidth(display) {
    if (display.cachedCharWidth != null) return display.cachedCharWidth;
    var anchor = elt("span", "xxxxxxxxxx");
    var pre = elt("pre", [anchor]);
    removeChildrenAndAdd(display.measure, pre);
    var rect = anchor.getBoundingClientRect(), width = (rect.right - rect.left) / 10;
    if (width > 2) display.cachedCharWidth = width;
    return width || 10;
  }

  // OPERATIONS

  // Operations are used to wrap a series of changes to the editor
  // state in such a way that each change won't have to update the
  // cursor and display (which would be awkward, slow, and
  // error-prone). Instead, display updates are batched and then all
  // combined and executed at once.

  var operationGroup = null;

  var nextOpId = 0;
  // Start a new operation.
  function startOperation(cm) {
    cm.curOp = {
      cm: cm,
      viewChanged: false,      // Flag that indicates that lines might need to be redrawn
      startHeight: cm.doc.height, // Used to detect need to update scrollbar
      forceUpdate: false,      // Used to force a redraw
      updateInput: null,       // Whether to reset the input textarea
      typing: false,           // Whether this reset should be careful to leave existing text (for compositing)
      changeObjs: null,        // Accumulated changes, for firing change events
      cursorActivityHandlers: null, // Set of handlers to fire cursorActivity on
      cursorActivityCalled: 0, // Tracks which cursorActivity handlers have been called already
      selectionChanged: false, // Whether the selection needs to be redrawn
      updateMaxLine: false,    // Set when the widest line needs to be determined anew
      scrollLeft: null, scrollTop: null, // Intermediate scroll position, not pushed to DOM yet
      scrollToPos: null,       // Used to scroll to a specific position
      focus: false,
      id: ++nextOpId           // Unique ID
    };
    if (operationGroup) {
      operationGroup.ops.push(cm.curOp);
    } else {
      cm.curOp.ownsGroup = operationGroup = {
        ops: [cm.curOp],
        delayedCallbacks: []
      };
    }
  }

  function fireCallbacksForOps(group) {
    // Calls delayed callbacks and cursorActivity handlers until no
    // new ones appear
    var callbacks = group.delayedCallbacks, i = 0;
    do {
      for (; i < callbacks.length; i++)
        callbacks[i]();
      for (var j = 0; j < group.ops.length; j++) {
        var op = group.ops[j];
        if (op.cursorActivityHandlers)
          while (op.cursorActivityCalled < op.cursorActivityHandlers.length)
            op.cursorActivityHandlers[op.cursorActivityCalled++](op.cm);
      }
    } while (i < callbacks.length);
  }

  // Finish an operation, updating the display and signalling delayed events
  function endOperation(cm) {
    var op = cm.curOp, group = op.ownsGroup;
    if (!group) return;

    try { fireCallbacksForOps(group); }
    finally {
      operationGroup = null;
      for (var i = 0; i < group.ops.length; i++)
        group.ops[i].cm.curOp = null;
      endOperations(group);
    }
  }

  // The DOM updates done when an operation finishes are batched so
  // that the minimum number of relayouts are required.
  function endOperations(group) {
    var ops = group.ops;
    for (var i = 0; i < ops.length; i++) // Read DOM
      endOperation_R1(ops[i]);
    for (var i = 0; i < ops.length; i++) // Write DOM (maybe)
      endOperation_W1(ops[i]);
    for (var i = 0; i < ops.length; i++) // Read DOM
      endOperation_R2(ops[i]);
    for (var i = 0; i < ops.length; i++) // Write DOM (maybe)
      endOperation_W2(ops[i]);
    for (var i = 0; i < ops.length; i++) // Read DOM
      endOperation_finish(ops[i]);
  }

  function endOperation_R1(op) {
    var cm = op.cm, display = cm.display;
    maybeClipScrollbars(cm);
    if (op.updateMaxLine) findMaxLine(cm);

    op.mustUpdate = op.viewChanged || op.forceUpdate || op.scrollTop != null ||
      op.scrollToPos && (op.scrollToPos.from.line < display.viewFrom ||
                         op.scrollToPos.to.line >= display.viewTo) ||
      display.maxLineChanged && cm.options.lineWrapping;
    op.update = op.mustUpdate &&
      new DisplayUpdate(cm, op.mustUpdate && {top: op.scrollTop, ensure: op.scrollToPos}, op.forceUpdate);
  }

  function endOperation_W1(op) {
    op.updatedDisplay = op.mustUpdate && updateDisplayIfNeeded(op.cm, op.update);
  }

  function endOperation_R2(op) {
    var cm = op.cm, display = cm.display;
    if (op.updatedDisplay) updateHeightsInViewport(cm);

    op.barMeasure = measureForScrollbars(cm);

    // If the max line changed since it was last measured, measure it,
    // and ensure the document's width matches it.
    // updateDisplay_W2 will use these properties to do the actual resizing
    if (display.maxLineChanged && !cm.options.lineWrapping) {
      op.adjustWidthTo = measureChar(cm, display.maxLine, display.maxLine.text.length).left + 3;
      cm.display.sizerWidth = op.adjustWidthTo;
      op.barMeasure.scrollWidth =
        Math.max(display.scroller.clientWidth, display.sizer.offsetLeft + op.adjustWidthTo + scrollGap(cm) + cm.display.barWidth);
      op.maxScrollLeft = Math.max(0, display.sizer.offsetLeft + op.adjustWidthTo - displayWidth(cm));
    }

    if (op.updatedDisplay || op.selectionChanged)
      op.preparedSelection = display.input.prepareSelection();
  }

  function endOperation_W2(op) {
    var cm = op.cm;

    if (op.adjustWidthTo != null) {
      cm.display.sizer.style.minWidth = op.adjustWidthTo + "px";
      if (op.maxScrollLeft < cm.doc.scrollLeft)
        setScrollLeft(cm, Math.min(cm.display.scroller.scrollLeft, op.maxScrollLeft), true);
      cm.display.maxLineChanged = false;
    }

    if (op.preparedSelection)
      cm.display.input.showSelection(op.preparedSelection);
    if (op.updatedDisplay)
      setDocumentHeight(cm, op.barMeasure);
    if (op.updatedDisplay || op.startHeight != cm.doc.height)
      updateScrollbars(cm, op.barMeasure);

    if (op.selectionChanged) restartBlink(cm);

    if (cm.state.focused && op.updateInput)
      cm.display.input.reset(op.typing);
    if (op.focus && op.focus == activeElt()) ensureFocus(op.cm);
  }

  function endOperation_finish(op) {
    var cm = op.cm, display = cm.display, doc = cm.doc;

    if (op.updatedDisplay) postUpdateDisplay(cm, op.update);

    // Abort mouse wheel delta measurement, when scrolling explicitly
    if (display.wheelStartX != null && (op.scrollTop != null || op.scrollLeft != null || op.scrollToPos))
      display.wheelStartX = display.wheelStartY = null;

    // Propagate the scroll position to the actual DOM scroller
    if (op.scrollTop != null && (display.scroller.scrollTop != op.scrollTop || op.forceScroll)) {
      doc.scrollTop = Math.max(0, Math.min(display.scroller.scrollHeight - display.scroller.clientHeight, op.scrollTop));
      display.scrollbars.setScrollTop(doc.scrollTop);
      display.scroller.scrollTop = doc.scrollTop;
    }
    if (op.scrollLeft != null && (display.scroller.scrollLeft != op.scrollLeft || op.forceScroll)) {
      doc.scrollLeft = Math.max(0, Math.min(display.scroller.scrollWidth - displayWidth(cm), op.scrollLeft));
      display.scrollbars.setScrollLeft(doc.scrollLeft);
      display.scroller.scrollLeft = doc.scrollLeft;
      alignHorizontally(cm);
    }
    // If we need to scroll a specific position into view, do so.
    if (op.scrollToPos) {
      var coords = scrollPosIntoView(cm, clipPos(doc, op.scrollToPos.from),
                                     clipPos(doc, op.scrollToPos.to), op.scrollToPos.margin);
      if (op.scrollToPos.isCursor && cm.state.focused) maybeScrollWindow(cm, coords);
    }

    // Fire events for markers that are hidden/unidden by editing or
    // undoing
    var hidden = op.maybeHiddenMarkers, unhidden = op.maybeUnhiddenMarkers;
    if (hidden) for (var i = 0; i < hidden.length; ++i)
      if (!hidden[i].lines.length) signal(hidden[i], "hide");
    if (unhidden) for (var i = 0; i < unhidden.length; ++i)
      if (unhidden[i].lines.length) signal(unhidden[i], "unhide");

    if (display.wrapper.offsetHeight)
      doc.scrollTop = cm.display.scroller.scrollTop;

    // Fire change events, and delayed event handlers
    if (op.changeObjs)
      signal(cm, "changes", cm, op.changeObjs);
    if (op.update)
      op.update.finish();
  }

  // Run the given function in an operation
  function runInOp(cm, f) {
    if (cm.curOp) return f();
    startOperation(cm);
    try { return f(); }
    finally { endOperation(cm); }
  }
  // Wraps a function in an operation. Returns the wrapped function.
  function operation(cm, f) {
    return function() {
      if (cm.curOp) return f.apply(cm, arguments);
      startOperation(cm);
      try { return f.apply(cm, arguments); }
      finally { endOperation(cm); }
    };
  }
  // Used to add methods to editor and doc instances, wrapping them in
  // operations.
  function methodOp(f) {
    return function() {
      if (this.curOp) return f.apply(this, arguments);
      startOperation(this);
      try { return f.apply(this, arguments); }
      finally { endOperation(this); }
    };
  }
  function docMethodOp(f) {
    return function() {
      var cm = this.cm;
      if (!cm || cm.curOp) return f.apply(this, arguments);
      startOperation(cm);
      try { return f.apply(this, arguments); }
      finally { endOperation(cm); }
    };
  }

  // VIEW TRACKING

  // These objects are used to represent the visible (currently drawn)
  // part of the document. A LineView may correspond to multiple
  // logical lines, if those are connected by collapsed ranges.
  function LineView(doc, line, lineN) {
    // The starting line
    this.line = line;
    // Continuing lines, if any
    this.rest = visualLineContinued(line);
    // Number of logical lines in this visual line
    this.size = this.rest ? lineNo(lst(this.rest)) - lineN + 1 : 1;
    this.node = this.text = null;
    this.hidden = lineIsHidden(doc, line);
  }

  // Create a range of LineView objects for the given lines.
  function buildViewArray(cm, from, to) {
    var array = [], nextPos;
    for (var pos = from; pos < to; pos = nextPos) {
      var view = new LineView(cm.doc, getLine(cm.doc, pos), pos);
      nextPos = pos + view.size;
      array.push(view);
    }
    return array;
  }

  // Updates the display.view data structure for a given change to the
  // document. From and to are in pre-change coordinates. Lendiff is
  // the amount of lines added or subtracted by the change. This is
  // used for changes that span multiple lines, or change the way
  // lines are divided into visual lines. regLineChange (below)
  // registers single-line changes.
  function regChange(cm, from, to, lendiff) {
    if (from == null) from = cm.doc.first;
    if (to == null) to = cm.doc.first + cm.doc.size;
    if (!lendiff) lendiff = 0;

    var display = cm.display;
    if (lendiff && to < display.viewTo &&
        (display.updateLineNumbers == null || display.updateLineNumbers > from))
      display.updateLineNumbers = from;

    cm.curOp.viewChanged = true;

    if (from >= display.viewTo) { // Change after
      if (sawCollapsedSpans && visualLineNo(cm.doc, from) < display.viewTo)
        resetView(cm);
    } else if (to <= display.viewFrom) { // Change before
      if (sawCollapsedSpans && visualLineEndNo(cm.doc, to + lendiff) > display.viewFrom) {
        resetView(cm);
      } else {
        display.viewFrom += lendiff;
        display.viewTo += lendiff;
      }
    } else if (from <= display.viewFrom && to >= display.viewTo) { // Full overlap
      resetView(cm);
    } else if (from <= display.viewFrom) { // Top overlap
      var cut = viewCuttingPoint(cm, to, to + lendiff, 1);
      if (cut) {
        display.view = display.view.slice(cut.index);
        display.viewFrom = cut.lineN;
        display.viewTo += lendiff;
      } else {
        resetView(cm);
      }
    } else if (to >= display.viewTo) { // Bottom overlap
      var cut = viewCuttingPoint(cm, from, from, -1);
      if (cut) {
        display.view = display.view.slice(0, cut.index);
        display.viewTo = cut.lineN;
      } else {
        resetView(cm);
      }
    } else { // Gap in the middle
      var cutTop = viewCuttingPoint(cm, from, from, -1);
      var cutBot = viewCuttingPoint(cm, to, to + lendiff, 1);
      if (cutTop && cutBot) {
        display.view = display.view.slice(0, cutTop.index)
          .concat(buildViewArray(cm, cutTop.lineN, cutBot.lineN))
          .concat(display.view.slice(cutBot.index));
        display.viewTo += lendiff;
      } else {
        resetView(cm);
      }
    }

    var ext = display.externalMeasured;
    if (ext) {
      if (to < ext.lineN)
        ext.lineN += lendiff;
      else if (from < ext.lineN + ext.size)
        display.externalMeasured = null;
    }
  }

  // Register a change to a single line. Type must be one of "text",
  // "gutter", "class", "widget"
  function regLineChange(cm, line, type) {
    cm.curOp.viewChanged = true;
    var display = cm.display, ext = cm.display.externalMeasured;
    if (ext && line >= ext.lineN && line < ext.lineN + ext.size)
      display.externalMeasured = null;

    if (line < display.viewFrom || line >= display.viewTo) return;
    var lineView = display.view[findViewIndex(cm, line)];
    if (lineView.node == null) return;
    var arr = lineView.changes || (lineView.changes = []);
    if (indexOf(arr, type) == -1) arr.push(type);
  }

  // Clear the view.
  function resetView(cm) {
    cm.display.viewFrom = cm.display.viewTo = cm.doc.first;
    cm.display.view = [];
    cm.display.viewOffset = 0;
  }

  // Find the view element corresponding to a given line. Return null
  // when the line isn't visible.
  function findViewIndex(cm, n) {
    if (n >= cm.display.viewTo) return null;
    n -= cm.display.viewFrom;
    if (n < 0) return null;
    var view = cm.display.view;
    for (var i = 0; i < view.length; i++) {
      n -= view[i].size;
      if (n < 0) return i;
    }
  }

  function viewCuttingPoint(cm, oldN, newN, dir) {
    var index = findViewIndex(cm, oldN), diff, view = cm.display.view;
    if (!sawCollapsedSpans || newN == cm.doc.first + cm.doc.size)
      return {index: index, lineN: newN};
    for (var i = 0, n = cm.display.viewFrom; i < index; i++)
      n += view[i].size;
    if (n != oldN) {
      if (dir > 0) {
        if (index == view.length - 1) return null;
        diff = (n + view[index].size) - oldN;
        index++;
      } else {
        diff = n - oldN;
      }
      oldN += diff; newN += diff;
    }
    while (visualLineNo(cm.doc, newN) != newN) {
      if (index == (dir < 0 ? 0 : view.length - 1)) return null;
      newN += dir * view[index - (dir < 0 ? 1 : 0)].size;
      index += dir;
    }
    return {index: index, lineN: newN};
  }

  // Force the view to cover a given range, adding empty view element
  // or clipping off existing ones as needed.
  function adjustView(cm, from, to) {
    var display = cm.display, view = display.view;
    if (view.length == 0 || from >= display.viewTo || to <= display.viewFrom) {
      display.view = buildViewArray(cm, from, to);
      display.viewFrom = from;
    } else {
      if (display.viewFrom > from)
        display.view = buildViewArray(cm, from, display.viewFrom).concat(display.view);
      else if (display.viewFrom < from)
        display.view = display.view.slice(findViewIndex(cm, from));
      display.viewFrom = from;
      if (display.viewTo < to)
        display.view = display.view.concat(buildViewArray(cm, display.viewTo, to));
      else if (display.viewTo > to)
        display.view = display.view.slice(0, findViewIndex(cm, to));
    }
    display.viewTo = to;
  }

  // Count the number of lines in the view whose DOM representation is
  // out of date (or nonexistent).
  function countDirtyView(cm) {
    var view = cm.display.view, dirty = 0;
    for (var i = 0; i < view.length; i++) {
      var lineView = view[i];
      if (!lineView.hidden && (!lineView.node || lineView.changes)) ++dirty;
    }
    return dirty;
  }

  // EVENT HANDLERS

  // Attach the necessary event handlers when initializing the editor
  function registerEventHandlers(cm) {
    var d = cm.display;
    on(d.scroller, "mousedown", operation(cm, onMouseDown));
    // Older IE's will not fire a second mousedown for a double click
    if (ie && ie_version < 11)
      on(d.scroller, "dblclick", operation(cm, function(e) {
        if (signalDOMEvent(cm, e)) return;
        var pos = posFromMouse(cm, e);
        if (!pos || clickInGutter(cm, e) || eventInWidget(cm.display, e)) return;
        e_preventDefault(e);
        var word = cm.findWordAt(pos);
        extendSelection(cm.doc, word.anchor, word.head);
      }));
    else
      on(d.scroller, "dblclick", function(e) { signalDOMEvent(cm, e) || e_preventDefault(e); });
    // Some browsers fire contextmenu *after* opening the menu, at
    // which point we can't mess with it anymore. Context menu is
    // handled in onMouseDown for these browsers.
    if (!captureRightClick) on(d.scroller, "contextmenu", function(e) {onContextMenu(cm, e);});

    // Used to suppress mouse event handling when a touch happens
    var touchFinished, prevTouch = {end: 0};
    function finishTouch() {
      if (d.activeTouch) {
        touchFinished = setTimeout(function() {d.activeTouch = null;}, 1000);
        prevTouch = d.activeTouch;
        prevTouch.end = +new Date;
      }
    };
    function isMouseLikeTouchEvent(e) {
      if (e.touches.length != 1) return false;
      var touch = e.touches[0];
      return touch.radiusX <= 1 && touch.radiusY <= 1;
    }
    function farAway(touch, other) {
      if (other.left == null) return true;
      var dx = other.left - touch.left, dy = other.top - touch.top;
      return dx * dx + dy * dy > 20 * 20;
    }
    on(d.scroller, "touchstart", function(e) {
      if (!isMouseLikeTouchEvent(e)) {
        clearTimeout(touchFinished);
        var now = +new Date;
        d.activeTouch = {start: now, moved: false,
                         prev: now - prevTouch.end <= 300 ? prevTouch : null};
        if (e.touches.length == 1) {
          d.activeTouch.left = e.touches[0].pageX;
          d.activeTouch.top = e.touches[0].pageY;
        }
      }
    });
    on(d.scroller, "touchmove", function() {
      if (d.activeTouch) d.activeTouch.moved = true;
    });
    on(d.scroller, "touchend", function(e) {
      var touch = d.activeTouch;
      if (touch && !eventInWidget(d, e) && touch.left != null &&
          !touch.moved && new Date - touch.start < 300) {
        var pos = cm.coordsChar(d.activeTouch, "page"), range;
        if (!touch.prev || farAway(touch, touch.prev)) // Single tap
          range = new Range(pos, pos);
        else if (!touch.prev.prev || farAway(touch, touch.prev.prev)) // Double tap
          range = cm.findWordAt(pos);
        else // Triple tap
          range = new Range(Pos(pos.line, 0), clipPos(cm.doc, Pos(pos.line + 1, 0)));
        cm.setSelection(range.anchor, range.head);
        cm.focus();
        e_preventDefault(e);
      }
      finishTouch();
    });
    on(d.scroller, "touchcancel", finishTouch);

    // Sync scrolling between fake scrollbars and real scrollable
    // area, ensure viewport is updated when scrolling.
    on(d.scroller, "scroll", function() {
      if (d.scroller.clientHeight) {
        setScrollTop(cm, d.scroller.scrollTop);
        setScrollLeft(cm, d.scroller.scrollLeft, true);
        signal(cm, "scroll", cm);
      }
    });

    // Listen to wheel events in order to try and update the viewport on time.
    on(d.scroller, "mousewheel", function(e){onScrollWheel(cm, e);});
    on(d.scroller, "DOMMouseScroll", function(e){onScrollWheel(cm, e);});

    // Prevent wrapper from ever scrolling
    on(d.wrapper, "scroll", function() { d.wrapper.scrollTop = d.wrapper.scrollLeft = 0; });

    d.dragFunctions = {
      simple: function(e) {if (!signalDOMEvent(cm, e)) e_stop(e);},
      start: function(e){onDragStart(cm, e);},
      drop: operation(cm, onDrop)
    };

    var inp = d.input.getField();
    on(inp, "keyup", function(e) { onKeyUp.call(cm, e); });
    on(inp, "keydown", operation(cm, onKeyDown));
    on(inp, "keypress", operation(cm, onKeyPress));
    on(inp, "focus", bind(onFocus, cm));
    on(inp, "blur", bind(onBlur, cm));
  }

  function dragDropChanged(cm, value, old) {
    var wasOn = old && old != CodeMirror.Init;
    if (!value != !wasOn) {
      var funcs = cm.display.dragFunctions;
      var toggle = value ? on : off;
      toggle(cm.display.scroller, "dragstart", funcs.start);
      toggle(cm.display.scroller, "dragenter", funcs.simple);
      toggle(cm.display.scroller, "dragover", funcs.simple);
      toggle(cm.display.scroller, "drop", funcs.drop);
    }
  }

  // Called when the window resizes
  function onResize(cm) {
    var d = cm.display;
    if (d.lastWrapHeight == d.wrapper.clientHeight && d.lastWrapWidth == d.wrapper.clientWidth)
      return;
    // Might be a text scaling operation, clear size caches.
    d.cachedCharWidth = d.cachedTextHeight = d.cachedPaddingH = null;
    d.scrollbarsClipped = false;
    cm.setSize();
  }

  // MOUSE EVENTS

  // Return true when the given mouse event happened in a widget
  function eventInWidget(display, e) {
    for (var n = e_target(e); n != display.wrapper; n = n.parentNode) {
      if (!n || (n.nodeType == 1 && n.getAttribute("cm-ignore-events") == "true") ||
          (n.parentNode == display.sizer && n != display.mover))
        return true;
    }
  }

  // Given a mouse event, find the corresponding position. If liberal
  // is false, it checks whether a gutter or scrollbar was clicked,
  // and returns null if it was. forRect is used by rectangular
  // selections, and tries to estimate a character position even for
  // coordinates beyond the right of the text.
  function posFromMouse(cm, e, liberal, forRect) {
    var display = cm.display;
    if (!liberal && e_target(e).getAttribute("cm-not-content") == "true") return null;

    var x, y, space = display.lineSpace.getBoundingClientRect();
    // Fails unpredictably on IE[67] when mouse is dragged around quickly.
    try { x = e.clientX - space.left; y = e.clientY - space.top; }
    catch (e) { return null; }
    var coords = coordsChar(cm, x, y), line;
    if (forRect && coords.xRel == 1 && (line = getLine(cm.doc, coords.line).text).length == coords.ch) {
      var colDiff = countColumn(line, line.length, cm.options.tabSize) - line.length;
      coords = Pos(coords.line, Math.max(0, Math.round((x - paddingH(cm.display).left) / charWidth(cm.display)) - colDiff));
    }
    return coords;
  }

  // A mouse down can be a single click, double click, triple click,
  // start of selection drag, start of text drag, new cursor
  // (ctrl-click), rectangle drag (alt-drag), or xwin
  // middle-click-paste. Or it might be a click on something we should
  // not interfere with, such as a scrollbar or widget.
  function onMouseDown(e) {
    var cm = this, display = cm.display;
    if (display.activeTouch && display.input.supportsTouch() || signalDOMEvent(cm, e)) return;
    display.shift = e.shiftKey;

    if (eventInWidget(display, e)) {
      if (!webkit) {
        // Briefly turn off draggability, to allow widgets to do
        // normal dragging things.
        display.scroller.draggable = false;
        setTimeout(function(){display.scroller.draggable = true;}, 100);
      }
      return;
    }
    if (clickInGutter(cm, e)) return;
    var start = posFromMouse(cm, e);
    window.focus();

    switch (e_button(e)) {
    case 1:
      if (start)
        leftButtonDown(cm, e, start);
      else if (e_target(e) == display.scroller)
        e_preventDefault(e);
      break;
    case 2:
      if (webkit) cm.state.lastMiddleDown = +new Date;
      if (start) extendSelection(cm.doc, start);
      setTimeout(function() {display.input.focus();}, 20);
      e_preventDefault(e);
      break;
    case 3:
      if (captureRightClick) onContextMenu(cm, e);
      else delayBlurEvent(cm);
      break;
    }
  }

  var lastClick, lastDoubleClick;
  function leftButtonDown(cm, e, start) {
    if (ie) setTimeout(bind(ensureFocus, cm), 0);
    else cm.curOp.focus = activeElt();

    var now = +new Date, type;
    if (lastDoubleClick && lastDoubleClick.time > now - 400 && cmp(lastDoubleClick.pos, start) == 0) {
      type = "triple";
    } else if (lastClick && lastClick.time > now - 400 && cmp(lastClick.pos, start) == 0) {
      type = "double";
      lastDoubleClick = {time: now, pos: start};
    } else {
      type = "single";
      lastClick = {time: now, pos: start};
    }

    var sel = cm.doc.sel, modifier = mac ? e.metaKey : e.ctrlKey, contained;
    if (cm.options.dragDrop && dragAndDrop && !isReadOnly(cm) &&
        type == "single" && (contained = sel.contains(start)) > -1 &&
        (cmp((contained = sel.ranges[contained]).from(), start) < 0 || start.xRel > 0) &&
        (cmp(contained.to(), start) > 0 || start.xRel < 0))
      leftButtonStartDrag(cm, e, start, modifier);
    else
      leftButtonSelect(cm, e, start, type, modifier);
  }

  // Start a text drag. When it ends, see if any dragging actually
  // happen, and treat as a click if it didn't.
  function leftButtonStartDrag(cm, e, start, modifier) {
    var display = cm.display, startTime = +new Date;
    var dragEnd = operation(cm, function(e2) {
      if (webkit) display.scroller.draggable = false;
      cm.state.draggingText = false;
      off(document, "mouseup", dragEnd);
      off(display.scroller, "drop", dragEnd);
      if (Math.abs(e.clientX - e2.clientX) + Math.abs(e.clientY - e2.clientY) < 10) {
        e_preventDefault(e2);
        if (!modifier && +new Date - 200 < startTime)
          extendSelection(cm.doc, start);
        // Work around unexplainable focus problem in IE9 (#2127) and Chrome (#3081)
        if (webkit || ie && ie_version == 9)
          setTimeout(function() {document.body.focus(); display.input.focus();}, 20);
        else
          display.input.focus();
      }
    });
    // Let the drag handler handle this.
    if (webkit) display.scroller.draggable = true;
    cm.state.draggingText = dragEnd;
    // IE's approach to draggable
    if (display.scroller.dragDrop) display.scroller.dragDrop();
    on(document, "mouseup", dragEnd);
    on(display.scroller, "drop", dragEnd);
  }

  // Normal selection, as opposed to text dragging.
  function leftButtonSelect(cm, e, start, type, addNew) {
    var display = cm.display, doc = cm.doc;
    e_preventDefault(e);

    var ourRange, ourIndex, startSel = doc.sel, ranges = startSel.ranges;
    if (addNew && !e.shiftKey) {
      ourIndex = doc.sel.contains(start);
      if (ourIndex > -1)
        ourRange = ranges[ourIndex];
      else
        ourRange = new Range(start, start);
    } else {
      ourRange = doc.sel.primary();
      ourIndex = doc.sel.primIndex;
    }

    if (e.altKey) {
      type = "rect";
      if (!addNew) ourRange = new Range(start, start);
      start = posFromMouse(cm, e, true, true);
      ourIndex = -1;
    } else if (type == "double") {
      var word = cm.findWordAt(start);
      if (cm.display.shift || doc.extend)
        ourRange = extendRange(doc, ourRange, word.anchor, word.head);
      else
        ourRange = word;
    } else if (type == "triple") {
      var line = new Range(Pos(start.line, 0), clipPos(doc, Pos(start.line + 1, 0)));
      if (cm.display.shift || doc.extend)
        ourRange = extendRange(doc, ourRange, line.anchor, line.head);
      else
        ourRange = line;
    } else {
      ourRange = extendRange(doc, ourRange, start);
    }

    if (!addNew) {
      ourIndex = 0;
      setSelection(doc, new Selection([ourRange], 0), sel_mouse);
      startSel = doc.sel;
    } else if (ourIndex == -1) {
      ourIndex = ranges.length;
      setSelection(doc, normalizeSelection(ranges.concat([ourRange]), ourIndex),
                   {scroll: false, origin: "*mouse"});
    } else if (ranges.length > 1 && ranges[ourIndex].empty() && type == "single" && !e.shiftKey) {
      setSelection(doc, normalizeSelection(ranges.slice(0, ourIndex).concat(ranges.slice(ourIndex + 1)), 0));
      startSel = doc.sel;
    } else {
      replaceOneSelection(doc, ourIndex, ourRange, sel_mouse);
    }

    var lastPos = start;
    function extendTo(pos) {
      if (cmp(lastPos, pos) == 0) return;
      lastPos = pos;

      if (type == "rect") {
        var ranges = [], tabSize = cm.options.tabSize;
        var startCol = countColumn(getLine(doc, start.line).text, start.ch, tabSize);
        var posCol = countColumn(getLine(doc, pos.line).text, pos.ch, tabSize);
        var left = Math.min(startCol, posCol), right = Math.max(startCol, posCol);
        for (var line = Math.min(start.line, pos.line), end = Math.min(cm.lastLine(), Math.max(start.line, pos.line));
             line <= end; line++) {
          var text = getLine(doc, line).text, leftPos = findColumn(text, left, tabSize);
          if (left == right)
            ranges.push(new Range(Pos(line, leftPos), Pos(line, leftPos)));
          else if (text.length > leftPos)
            ranges.push(new Range(Pos(line, leftPos), Pos(line, findColumn(text, right, tabSize))));
        }
        if (!ranges.length) ranges.push(new Range(start, start));
        setSelection(doc, normalizeSelection(startSel.ranges.slice(0, ourIndex).concat(ranges), ourIndex),
                     {origin: "*mouse", scroll: false});
        cm.scrollIntoView(pos);
      } else {
        var oldRange = ourRange;
        var anchor = oldRange.anchor, head = pos;
        if (type != "single") {
          if (type == "double")
            var range = cm.findWordAt(pos);
          else
            var range = new Range(Pos(pos.line, 0), clipPos(doc, Pos(pos.line + 1, 0)));
          if (cmp(range.anchor, anchor) > 0) {
            head = range.head;
            anchor = minPos(oldRange.from(), range.anchor);
          } else {
            head = range.anchor;
            anchor = maxPos(oldRange.to(), range.head);
          }
        }
        var ranges = startSel.ranges.slice(0);
        ranges[ourIndex] = new Range(clipPos(doc, anchor), head);
        setSelection(doc, normalizeSelection(ranges, ourIndex), sel_mouse);
      }
    }

    var editorSize = display.wrapper.getBoundingClientRect();
    // Used to ensure timeout re-tries don't fire when another extend
    // happened in the meantime (clearTimeout isn't reliable -- at
    // least on Chrome, the timeouts still happen even when cleared,
    // if the clear happens after their scheduled firing time).
    var counter = 0;

    function extend(e) {
      var curCount = ++counter;
      var cur = posFromMouse(cm, e, true, type == "rect");
      if (!cur) return;
      if (cmp(cur, lastPos) != 0) {
        cm.curOp.focus = activeElt();
        extendTo(cur);
        var visible = visibleLines(display, doc);
        if (cur.line >= visible.to || cur.line < visible.from)
          setTimeout(operation(cm, function(){if (counter == curCount) extend(e);}), 150);
      } else {
        var outside = e.clientY < editorSize.top ? -20 : e.clientY > editorSize.bottom ? 20 : 0;
        if (outside) setTimeout(operation(cm, function() {
          if (counter != curCount) return;
          display.scroller.scrollTop += outside;
          extend(e);
        }), 50);
      }
    }

    function done(e) {
      counter = Infinity;
      e_preventDefault(e);
      display.input.focus();
      off(document, "mousemove", move);
      off(document, "mouseup", up);
      doc.history.lastSelOrigin = null;
    }

    var move = operation(cm, function(e) {
      if (!e_button(e)) done(e);
      else extend(e);
    });
    var up = operation(cm, done);
    on(document, "mousemove", move);
    on(document, "mouseup", up);
  }

  // Determines whether an event happened in the gutter, and fires the
  // handlers for the corresponding event.
  function gutterEvent(cm, e, type, prevent, signalfn) {
    try { var mX = e.clientX, mY = e.clientY; }
    catch(e) { return false; }
    if (mX >= Math.floor(cm.display.gutters.getBoundingClientRect().right)) return false;
    if (prevent) e_preventDefault(e);

    var display = cm.display;
    var lineBox = display.lineDiv.getBoundingClientRect();

    if (mY > lineBox.bottom || !hasHandler(cm, type)) return e_defaultPrevented(e);
    mY -= lineBox.top - display.viewOffset;

    for (var i = 0; i < cm.options.gutters.length; ++i) {
      var g = display.gutters.childNodes[i];
      if (g && g.getBoundingClientRect().right >= mX) {
        var line = lineAtHeight(cm.doc, mY);
        var gutter = cm.options.gutters[i];
        signalfn(cm, type, cm, line, gutter, e);
        return e_defaultPrevented(e);
      }
    }
  }

  function clickInGutter(cm, e) {
    return gutterEvent(cm, e, "gutterClick", true, signalLater);
  }

  // Kludge to work around strange IE behavior where it'll sometimes
  // re-fire a series of drag-related events right after the drop (#1551)
  var lastDrop = 0;

  function onDrop(e) {
    var cm = this;
    if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e))
      return;
    e_preventDefault(e);
    if (ie) lastDrop = +new Date;
    var pos = posFromMouse(cm, e, true), files = e.dataTransfer.files;
    if (!pos || isReadOnly(cm)) return;
    // Might be a file drop, in which case we simply extract the text
    // and insert it.
    if (files && files.length && window.FileReader && window.File) {
      var n = files.length, text = Array(n), read = 0;
      var loadFile = function(file, i) {
        var reader = new FileReader;
        reader.onload = operation(cm, function() {
          text[i] = reader.result;
          if (++read == n) {
            pos = clipPos(cm.doc, pos);
            var change = {from: pos, to: pos, text: splitLines(text.join("\n")), origin: "paste"};
            makeChange(cm.doc, change);
            setSelectionReplaceHistory(cm.doc, simpleSelection(pos, changeEnd(change)));
          }
        });
        reader.readAsText(file);
      };
      for (var i = 0; i < n; ++i) loadFile(files[i], i);
    } else { // Normal drop
      // Don't do a replace if the drop happened inside of the selected text.
      if (cm.state.draggingText && cm.doc.sel.contains(pos) > -1) {
        cm.state.draggingText(e);
        // Ensure the editor is re-focused
        setTimeout(function() {cm.display.input.focus();}, 20);
        return;
      }
      try {
        var text = e.dataTransfer.getData("Text");
        if (text) {
          if (cm.state.draggingText && !(mac ? e.altKey : e.ctrlKey))
            var selected = cm.listSelections();
          setSelectionNoUndo(cm.doc, simpleSelection(pos, pos));
          if (selected) for (var i = 0; i < selected.length; ++i)
            replaceRange(cm.doc, "", selected[i].anchor, selected[i].head, "drag");
          cm.replaceSelection(text, "around", "paste");
          cm.display.input.focus();
        }
      }
      catch(e){}
    }
  }

  function onDragStart(cm, e) {
    if (ie && (!cm.state.draggingText || +new Date - lastDrop < 100)) { e_stop(e); return; }
    if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e)) return;

    e.dataTransfer.setData("Text", cm.getSelection());

    // Use dummy image instead of default browsers image.
    // Recent Safari (~6.0.2) have a tendency to segfault when this happens, so we don't do it there.
    if (e.dataTransfer.setDragImage && !safari) {
      var img = elt("img", null, null, "position: fixed; left: 0; top: 0;");
      img.src = "data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==";
      if (presto) {
        img.width = img.height = 1;
        cm.display.wrapper.appendChild(img);
        // Force a relayout, or Opera won't use our image for some obscure reason
        img._top = img.offsetTop;
      }
      e.dataTransfer.setDragImage(img, 0, 0);
      if (presto) img.parentNode.removeChild(img);
    }
  }

  // SCROLL EVENTS

  // Sync the scrollable area and scrollbars, ensure the viewport
  // covers the visible area.
  function setScrollTop(cm, val) {
    if (Math.abs(cm.doc.scrollTop - val) < 2) return;
    cm.doc.scrollTop = val;
    if (!gecko) updateDisplaySimple(cm, {top: val});
    if (cm.display.scroller.scrollTop != val) cm.display.scroller.scrollTop = val;
    cm.display.scrollbars.setScrollTop(val);
    if (gecko) updateDisplaySimple(cm);
    startWorker(cm, 100);
  }
  // Sync scroller and scrollbar, ensure the gutter elements are
  // aligned.
  function setScrollLeft(cm, val, isScroller) {
    if (isScroller ? val == cm.doc.scrollLeft : Math.abs(cm.doc.scrollLeft - val) < 2) return;
    val = Math.min(val, cm.display.scroller.scrollWidth - cm.display.scroller.clientWidth);
    cm.doc.scrollLeft = val;
    alignHorizontally(cm);
    if (cm.display.scroller.scrollLeft != val) cm.display.scroller.scrollLeft = val;
    cm.display.scrollbars.setScrollLeft(val);
  }

  // Since the delta values reported on mouse wheel events are
  // unstandardized between browsers and even browser versions, and
  // generally horribly unpredictable, this code starts by measuring
  // the scroll effect that the first few mouse wheel events have,
  // and, from that, detects the way it can convert deltas to pixel
  // offsets afterwards.
  //
  // The reason we want to know the amount a wheel event will scroll
  // is that it gives us a chance to update the display before the
  // actual scrolling happens, reducing flickering.

  var wheelSamples = 0, wheelPixelsPerUnit = null;
  // Fill in a browser-detected starting value on browsers where we
  // know one. These don't have to be accurate -- the result of them
  // being wrong would just be a slight flicker on the first wheel
  // scroll (if it is large enough).
  if (ie) wheelPixelsPerUnit = -.53;
  else if (gecko) wheelPixelsPerUnit = 15;
  else if (chrome) wheelPixelsPerUnit = -.7;
  else if (safari) wheelPixelsPerUnit = -1/3;

  var wheelEventDelta = function(e) {
    var dx = e.wheelDeltaX, dy = e.wheelDeltaY;
    if (dx == null && e.detail && e.axis == e.HORIZONTAL_AXIS) dx = e.detail;
    if (dy == null && e.detail && e.axis == e.VERTICAL_AXIS) dy = e.detail;
    else if (dy == null) dy = e.wheelDelta;
    return {x: dx, y: dy};
  };
  CodeMirror.wheelEventPixels = function(e) {
    var delta = wheelEventDelta(e);
    delta.x *= wheelPixelsPerUnit;
    delta.y *= wheelPixelsPerUnit;
    return delta;
  };

  function onScrollWheel(cm, e) {
    var delta = wheelEventDelta(e), dx = delta.x, dy = delta.y;

    var display = cm.display, scroll = display.scroller;
    // Quit if there's nothing to scroll here
    if (!(dx && scroll.scrollWidth > scroll.clientWidth ||
          dy && scroll.scrollHeight > scroll.clientHeight)) return;

    // Webkit browsers on OS X abort momentum scrolls when the target
    // of the scroll event is removed from the scrollable element.
    // This hack (see related code in patchDisplay) makes sure the
    // element is kept around.
    if (dy && mac && webkit) {
      outer: for (var cur = e.target, view = display.view; cur != scroll; cur = cur.parentNode) {
        for (var i = 0; i < view.length; i++) {
          if (view[i].node == cur) {
            cm.display.currentWheelTarget = cur;
            break outer;
          }
        }
      }
    }

    // On some browsers, horizontal scrolling will cause redraws to
    // happen before the gutter has been realigned, causing it to
    // wriggle around in a most unseemly way. When we have an
    // estimated pixels/delta value, we just handle horizontal
    // scrolling entirely here. It'll be slightly off from native, but
    // better than glitching out.
    if (dx && !gecko && !presto && wheelPixelsPerUnit != null) {
      if (dy)
        setScrollTop(cm, Math.max(0, Math.min(scroll.scrollTop + dy * wheelPixelsPerUnit, scroll.scrollHeight - scroll.clientHeight)));
      setScrollLeft(cm, Math.max(0, Math.min(scroll.scrollLeft + dx * wheelPixelsPerUnit, scroll.scrollWidth - scroll.clientWidth)));
      e_preventDefault(e);
      display.wheelStartX = null; // Abort measurement, if in progress
      return;
    }

    // 'Project' the visible viewport to cover the area that is being
    // scrolled into view (if we know enough to estimate it).
    if (dy && wheelPixelsPerUnit != null) {
      var pixels = dy * wheelPixelsPerUnit;
      var top = cm.doc.scrollTop, bot = top + display.wrapper.clientHeight;
      if (pixels < 0) top = Math.max(0, top + pixels - 50);
      else bot = Math.min(cm.doc.height, bot + pixels + 50);
      updateDisplaySimple(cm, {top: top, bottom: bot});
    }

    if (wheelSamples < 20) {
      if (display.wheelStartX == null) {
        display.wheelStartX = scroll.scrollLeft; display.wheelStartY = scroll.scrollTop;
        display.wheelDX = dx; display.wheelDY = dy;
        setTimeout(function() {
          if (display.wheelStartX == null) return;
          var movedX = scroll.scrollLeft - display.wheelStartX;
          var movedY = scroll.scrollTop - display.wheelStartY;
          var sample = (movedY && display.wheelDY && movedY / display.wheelDY) ||
            (movedX && display.wheelDX && movedX / display.wheelDX);
          display.wheelStartX = display.wheelStartY = null;
          if (!sample) return;
          wheelPixelsPerUnit = (wheelPixelsPerUnit * wheelSamples + sample) / (wheelSamples + 1);
          ++wheelSamples;
        }, 200);
      } else {
        display.wheelDX += dx; display.wheelDY += dy;
      }
    }
  }

  // KEY EVENTS

  // Run a handler that was bound to a key.
  function doHandleBinding(cm, bound, dropShift) {
    if (typeof bound == "string") {
      bound = commands[bound];
      if (!bound) return false;
    }
    // Ensure previous input has been read, so that the handler sees a
    // consistent view of the document
    cm.display.input.ensurePolled();
    var prevShift = cm.display.shift, done = false;
    try {
      if (isReadOnly(cm)) cm.state.suppressEdits = true;
      if (dropShift) cm.display.shift = false;
      done = bound(cm) != Pass;
    } finally {
      cm.display.shift = prevShift;
      cm.state.suppressEdits = false;
    }
    return done;
  }

  function lookupKeyForEditor(cm, name, handle) {
    for (var i = 0; i < cm.state.keyMaps.length; i++) {
      var result = lookupKey(name, cm.state.keyMaps[i], handle, cm);
      if (result) return result;
    }
    return (cm.options.extraKeys && lookupKey(name, cm.options.extraKeys, handle, cm))
      || lookupKey(name, cm.options.keyMap, handle, cm);
  }

  var stopSeq = new Delayed;
  function dispatchKey(cm, name, e, handle) {
    var seq = cm.state.keySeq;
    if (seq) {
      if (isModifierKey(name)) return "handled";
      stopSeq.set(50, function() {
        if (cm.state.keySeq == seq) {
          cm.state.keySeq = null;
          cm.display.input.reset();
        }
      });
      name = seq + " " + name;
    }
    var result = lookupKeyForEditor(cm, name, handle);

    if (result == "multi")
      cm.state.keySeq = name;
    if (result == "handled")
      signalLater(cm, "keyHandled", cm, name, e);

    if (result == "handled" || result == "multi") {
      e_preventDefault(e);
      restartBlink(cm);
    }

    if (seq && !result && /\'$/.test(name)) {
      e_preventDefault(e);
      return true;
    }
    return !!result;
  }

  // Handle a key from the keydown event.
  function handleKeyBinding(cm, e) {
    var name = keyName(e, true);
    if (!name) return false;

    if (e.shiftKey && !cm.state.keySeq) {
      // First try to resolve full name (including 'Shift-'). Failing
      // that, see if there is a cursor-motion command (starting with
      // 'go') bound to the keyname without 'Shift-'.
      return dispatchKey(cm, "Shift-" + name, e, function(b) {return doHandleBinding(cm, b, true);})
          || dispatchKey(cm, name, e, function(b) {
               if (typeof b == "string" ? /^go[A-Z]/.test(b) : b.motion)
                 return doHandleBinding(cm, b);
             });
    } else {
      return dispatchKey(cm, name, e, function(b) { return doHandleBinding(cm, b); });
    }
  }

  // Handle a key from the keypress event
  function handleCharBinding(cm, e, ch) {
    return dispatchKey(cm, "'" + ch + "'", e,
                       function(b) { return doHandleBinding(cm, b, true); });
  }

  var lastStoppedKey = null;
  function onKeyDown(e) {
    var cm = this;
    cm.curOp.focus = activeElt();
    if (signalDOMEvent(cm, e)) return;
    // IE does strange things with escape.
    if (ie && ie_version < 11 && e.keyCode == 27) e.returnValue = false;
    var code = e.keyCode;
    cm.display.shift = code == 16 || e.shiftKey;
    var handled = handleKeyBinding(cm, e);
    if (presto) {
      lastStoppedKey = handled ? code : null;
      // Opera has no cut event... we try to at least catch the key combo
      if (!handled && code == 88 && !hasCopyEvent && (mac ? e.metaKey : e.ctrlKey))
        cm.replaceSelection("", null, "cut");
    }

    // Turn mouse into crosshair when Alt is held on Mac.
    if (code == 18 && !/\bCodeMirror-crosshair\b/.test(cm.display.lineDiv.className))
      showCrossHair(cm);
  }

  function showCrossHair(cm) {
    var lineDiv = cm.display.lineDiv;
    addClass(lineDiv, "CodeMirror-crosshair");

    function up(e) {
      if (e.keyCode == 18 || !e.altKey) {
        rmClass(lineDiv, "CodeMirror-crosshair");
        off(document, "keyup", up);
        off(document, "mouseover", up);
      }
    }
    on(document, "keyup", up);
    on(document, "mouseover", up);
  }

  function onKeyUp(e) {
    if (e.keyCode == 16) this.doc.sel.shift = false;
    signalDOMEvent(this, e);
  }

  function onKeyPress(e) {
    var cm = this;
    if (eventInWidget(cm.display, e) || signalDOMEvent(cm, e) || e.ctrlKey && !e.altKey || mac && e.metaKey) return;
    var keyCode = e.keyCode, charCode = e.charCode;
    if (presto && keyCode == lastStoppedKey) {lastStoppedKey = null; e_preventDefault(e); return;}
    if ((presto && (!e.which || e.which < 10)) && handleKeyBinding(cm, e)) return;
    var ch = String.fromCharCode(charCode == null ? keyCode : charCode);
    if (handleCharBinding(cm, e, ch)) return;
    cm.display.input.onKeyPress(e);
  }

  // FOCUS/BLUR EVENTS

  function delayBlurEvent(cm) {
    cm.state.delayingBlurEvent = true;
    setTimeout(function() {
      if (cm.state.delayingBlurEvent) {
        cm.state.delayingBlurEvent = false;
        onBlur(cm);
      }
    }, 100);
  }

  function onFocus(cm) {
    if (cm.state.delayingBlurEvent) cm.state.delayingBlurEvent = false;

    if (cm.options.readOnly == "nocursor") return;
    if (!cm.state.focused) {
      signal(cm, "focus", cm);
      cm.state.focused = true;
      addClass(cm.display.wrapper, "CodeMirror-focused");
      // This test prevents this from firing when a context
      // menu is closed (since the input reset would kill the
      // select-all detection hack)
      if (!cm.curOp && cm.display.selForContextMenu != cm.doc.sel) {
        cm.display.input.reset();
        if (webkit) setTimeout(function() { cm.display.input.reset(true); }, 20); // Issue #1730
      }
      cm.display.input.receivedFocus();
    }
    restartBlink(cm);
  }
  function onBlur(cm) {
    if (cm.state.delayingBlurEvent) return;

    if (cm.state.focused) {
      signal(cm, "blur", cm);
      cm.state.focused = false;
      rmClass(cm.display.wrapper, "CodeMirror-focused");
    }
    clearInterval(cm.display.blinker);
    setTimeout(function() {if (!cm.state.focused) cm.display.shift = false;}, 150);
  }

  // CONTEXT MENU HANDLING

  // To make the context menu work, we need to briefly unhide the
  // textarea (making it as unobtrusive as possible) to let the
  // right-click take effect on it.
  function onContextMenu(cm, e) {
    if (eventInWidget(cm.display, e) || contextMenuInGutter(cm, e)) return;
    cm.display.input.onContextMenu(e);
  }

  function contextMenuInGutter(cm, e) {
    if (!hasHandler(cm, "gutterContextMenu")) return false;
    return gutterEvent(cm, e, "gutterContextMenu", false, signal);
  }

  // UPDATING

  // Compute the position of the end of a change (its 'to' property
  // refers to the pre-change end).
  var changeEnd = CodeMirror.changeEnd = function(change) {
    if (!change.text) return change.to;
    return Pos(change.from.line + change.text.length - 1,
               lst(change.text).length + (change.text.length == 1 ? change.from.ch : 0));
  };

  // Adjust a position to refer to the post-change position of the
  // same text, or the end of the change if the change covers it.
  function adjustForChange(pos, change) {
    if (cmp(pos, change.from) < 0) return pos;
    if (cmp(pos, change.to) <= 0) return changeEnd(change);

    var line = pos.line + change.text.length - (change.to.line - change.from.line) - 1, ch = pos.ch;
    if (pos.line == change.to.line) ch += changeEnd(change).ch - change.to.ch;
    return Pos(line, ch);
  }

  function computeSelAfterChange(doc, change) {
    var out = [];
    for (var i = 0; i < doc.sel.ranges.length; i++) {
      var range = doc.sel.ranges[i];
      out.push(new Range(adjustForChange(range.anchor, change),
                         adjustForChange(range.head, change)));
    }
    return normalizeSelection(out, doc.sel.primIndex);
  }

  function offsetPos(pos, old, nw) {
    if (pos.line == old.line)
      return Pos(nw.line, pos.ch - old.ch + nw.ch);
    else
      return Pos(nw.line + (pos.line - old.line), pos.ch);
  }

  // Used by replaceSelections to allow moving the selection to the
  // start or around the replaced test. Hint may be "start" or "around".
  function computeReplacedSel(doc, changes, hint) {
    var out = [];
    var oldPrev = Pos(doc.first, 0), newPrev = oldPrev;
    for (var i = 0; i < changes.length; i++) {
      var change = changes[i];
      var from = offsetPos(change.from, oldPrev, newPrev);
      var to = offsetPos(changeEnd(change), oldPrev, newPrev);
      oldPrev = change.to;
      newPrev = to;
      if (hint == "around") {
        var range = doc.sel.ranges[i], inv = cmp(range.head, range.anchor) < 0;
        out[i] = new Range(inv ? to : from, inv ? from : to);
      } else {
        out[i] = new Range(from, from);
      }
    }
    return new Selection(out, doc.sel.primIndex);
  }

  // Allow "beforeChange" event handlers to influence a change
  function filterChange(doc, change, update) {
    var obj = {
      canceled: false,
      from: change.from,
      to: change.to,
      text: change.text,
      origin: change.origin,
      cancel: function() { this.canceled = true; }
    };
    if (update) obj.update = function(from, to, text, origin) {
      if (from) this.from = clipPos(doc, from);
      if (to) this.to = clipPos(doc, to);
      if (text) this.text = text;
      if (origin !== undefined) this.origin = origin;
    };
    signal(doc, "beforeChange", doc, obj);
    if (doc.cm) signal(doc.cm, "beforeChange", doc.cm, obj);

    if (obj.canceled) return null;
    return {from: obj.from, to: obj.to, text: obj.text, origin: obj.origin};
  }

  // Apply a change to a document, and add it to the document's
  // history, and propagating it to all linked documents.
  function makeChange(doc, change, ignoreReadOnly) {
    if (doc.cm) {
      if (!doc.cm.curOp) return operation(doc.cm, makeChange)(doc, change, ignoreReadOnly);
      if (doc.cm.state.suppressEdits) return;
    }

    if (hasHandler(doc, "beforeChange") || doc.cm && hasHandler(doc.cm, "beforeChange")) {
      change = filterChange(doc, change, true);
      if (!change) return;
    }

    // Possibly split or suppress the update based on the presence
    // of read-only spans in its range.
    var split = sawReadOnlySpans && !ignoreReadOnly && removeReadOnlyRanges(doc, change.from, change.to);
    if (split) {
      for (var i = split.length - 1; i >= 0; --i)
        makeChangeInner(doc, {from: split[i].from, to: split[i].to, text: i ? [""] : change.text});
    } else {
      makeChangeInner(doc, change);
    }
  }

  function makeChangeInner(doc, change) {
    if (change.text.length == 1 && change.text[0] == "" && cmp(change.from, change.to) == 0) return;
    var selAfter = computeSelAfterChange(doc, change);
    addChangeToHistory(doc, change, selAfter, doc.cm ? doc.cm.curOp.id : NaN);

    makeChangeSingleDoc(doc, change, selAfter, stretchSpansOverChange(doc, change));
    var rebased = [];

    linkedDocs(doc, function(doc, sharedHist) {
      if (!sharedHist && indexOf(rebased, doc.history) == -1) {
        rebaseHist(doc.history, change);
        rebased.push(doc.history);
      }
      makeChangeSingleDoc(doc, change, null, stretchSpansOverChange(doc, change));
    });
  }

  // Revert a change stored in a document's history.
  function makeChangeFromHistory(doc, type, allowSelectionOnly) {
    if (doc.cm && doc.cm.state.suppressEdits) return;

    var hist = doc.history, event, selAfter = doc.sel;
    var source = type == "undo" ? hist.done : hist.undone, dest = type == "undo" ? hist.undone : hist.done;

    // Verify that there is a useable event (so that ctrl-z won't
    // needlessly clear selection events)
    for (var i = 0; i < source.length; i++) {
      event = source[i];
      if (allowSelectionOnly ? event.ranges && !event.equals(doc.sel) : !event.ranges)
        break;
    }
    if (i == source.length) return;
    hist.lastOrigin = hist.lastSelOrigin = null;

    for (;;) {
      event = source.pop();
      if (event.ranges) {
        pushSelectionToHistory(event, dest);
        if (allowSelectionOnly && !event.equals(doc.sel)) {
          setSelection(doc, event, {clearRedo: false});
          return;
        }
        selAfter = event;
      }
      else break;
    }

    // Build up a reverse change object to add to the opposite history
    // stack (redo when undoing, and vice versa).
    var antiChanges = [];
    pushSelectionToHistory(selAfter, dest);
    dest.push({changes: antiChanges, generation: hist.generation});
    hist.generation = event.generation || ++hist.maxGeneration;

    var filter = hasHandler(doc, "beforeChange") || doc.cm && hasHandler(doc.cm, "beforeChange");

    for (var i = event.changes.length - 1; i >= 0; --i) {
      var change = event.changes[i];
      change.origin = type;
      if (filter && !filterChange(doc, change, false)) {
        source.length = 0;
        return;
      }

      antiChanges.push(historyChangeFromChange(doc, change));

      var after = i ? computeSelAfterChange(doc, change) : lst(source);
      makeChangeSingleDoc(doc, change, after, mergeOldSpans(doc, change));
      if (!i && doc.cm) doc.cm.scrollIntoView({from: change.from, to: changeEnd(change)});
      var rebased = [];

      // Propagate to the linked documents
      linkedDocs(doc, function(doc, sharedHist) {
        if (!sharedHist && indexOf(rebased, doc.history) == -1) {
          rebaseHist(doc.history, change);
          rebased.push(doc.history);
        }
        makeChangeSingleDoc(doc, change, null, mergeOldSpans(doc, change));
      });
    }
  }

  // Sub-views need their line numbers shifted when text is added
  // above or below them in the parent document.
  function shiftDoc(doc, distance) {
    if (distance == 0) return;
    doc.first += distance;
    doc.sel = new Selection(map(doc.sel.ranges, function(range) {
      return new Range(Pos(range.anchor.line + distance, range.anchor.ch),
                       Pos(range.head.line + distance, range.head.ch));
    }), doc.sel.primIndex);
    if (doc.cm) {
      regChange(doc.cm, doc.first, doc.first - distance, distance);
      for (var d = doc.cm.display, l = d.viewFrom; l < d.viewTo; l++)
        regLineChange(doc.cm, l, "gutter");
    }
  }

  // More lower-level change function, handling only a single document
  // (not linked ones).
  function makeChangeSingleDoc(doc, change, selAfter, spans) {
    if (doc.cm && !doc.cm.curOp)
      return operation(doc.cm, makeChangeSingleDoc)(doc, change, selAfter, spans);

    if (change.to.line < doc.first) {
      shiftDoc(doc, change.text.length - 1 - (change.to.line - change.from.line));
      return;
    }
    if (change.from.line > doc.lastLine()) return;

    // Clip the change to the size of this doc
    if (change.from.line < doc.first) {
      var shift = change.text.length - 1 - (doc.first - change.from.line);
      shiftDoc(doc, shift);
      change = {from: Pos(doc.first, 0), to: Pos(change.to.line + shift, change.to.ch),
                text: [lst(change.text)], origin: change.origin};
    }
    var last = doc.lastLine();
    if (change.to.line > last) {
      change = {from: change.from, to: Pos(last, getLine(doc, last).text.length),
                text: [change.text[0]], origin: change.origin};
    }

    change.removed = getBetween(doc, change.from, change.to);

    if (!selAfter) selAfter = computeSelAfterChange(doc, change);
    if (doc.cm) makeChangeSingleDocInEditor(doc.cm, change, spans);
    else updateDoc(doc, change, spans);
    setSelectionNoUndo(doc, selAfter, sel_dontScroll);
  }

  // Handle the interaction of a change to a document with the editor
  // that this document is part of.
  function makeChangeSingleDocInEditor(cm, change, spans) {
    var doc = cm.doc, display = cm.display, from = change.from, to = change.to;

    var recomputeMaxLength = false, checkWidthStart = from.line;
    if (!cm.options.lineWrapping) {
      checkWidthStart = lineNo(visualLine(getLine(doc, from.line)));
      doc.iter(checkWidthStart, to.line + 1, function(line) {
        if (line == display.maxLine) {
          recomputeMaxLength = true;
          return true;
        }
      });
    }

    if (doc.sel.contains(change.from, change.to) > -1)
      signalCursorActivity(cm);

    updateDoc(doc, change, spans, estimateHeight(cm));

    if (!cm.options.lineWrapping) {
      doc.iter(checkWidthStart, from.line + change.text.length, function(line) {
        var len = lineLength(line);
        if (len > display.maxLineLength) {
          display.maxLine = line;
          display.maxLineLength = len;
          display.maxLineChanged = true;
          recomputeMaxLength = false;
        }
      });
      if (recomputeMaxLength) cm.curOp.updateMaxLine = true;
    }

    // Adjust frontier, schedule worker
    doc.frontier = Math.min(doc.frontier, from.line);
    startWorker(cm, 400);

    var lendiff = change.text.length - (to.line - from.line) - 1;
    // Remember that these lines changed, for updating the display
    if (change.full)
      regChange(cm);
    else if (from.line == to.line && change.text.length == 1 && !isWholeLineUpdate(cm.doc, change))
      regLineChange(cm, from.line, "text");
    else
      regChange(cm, from.line, to.line + 1, lendiff);

    var changesHandler = hasHandler(cm, "changes"), changeHandler = hasHandler(cm, "change");
    if (changeHandler || changesHandler) {
      var obj = {
        from: from, to: to,
        text: change.text,
        removed: change.removed,
        origin: change.origin
      };
      if (changeHandler) signalLater(cm, "change", cm, obj);
      if (changesHandler) (cm.curOp.changeObjs || (cm.curOp.changeObjs = [])).push(obj);
    }
    cm.display.selForContextMenu = null;
  }

  function replaceRange(doc, code, from, to, origin) {
    if (!to) to = from;
    if (cmp(to, from) < 0) { var tmp = to; to = from; from = tmp; }
    if (typeof code == "string") code = splitLines(code);
    makeChange(doc, {from: from, to: to, text: code, origin: origin});
  }

  // SCROLLING THINGS INTO VIEW

  // If an editor sits on the top or bottom of the window, partially
  // scrolled out of view, this ensures that the cursor is visible.
  function maybeScrollWindow(cm, coords) {
    if (signalDOMEvent(cm, "scrollCursorIntoView")) return;

    var display = cm.display, box = display.sizer.getBoundingClientRect(), doScroll = null;
    if (coords.top + box.top < 0) doScroll = true;
    else if (coords.bottom + box.top > (window.innerHeight || document.documentElement.clientHeight)) doScroll = false;
    if (doScroll != null && !phantom) {
      var scrollNode = elt("div", "\u200b", null, "position: absolute; top: " +
                           (coords.top - display.viewOffset - paddingTop(cm.display)) + "px; height: " +
                           (coords.bottom - coords.top + scrollGap(cm) + display.barHeight) + "px; left: " +
                           coords.left + "px; width: 2px;");
      cm.display.lineSpace.appendChild(scrollNode);
      scrollNode.scrollIntoView(doScroll);
      cm.display.lineSpace.removeChild(scrollNode);
    }
  }

  // Scroll a given position into view (immediately), verifying that
  // it actually became visible (as line heights are accurately
  // measured, the position of something may 'drift' during drawing).
  function scrollPosIntoView(cm, pos, end, margin) {
    if (margin == null) margin = 0;
    for (var limit = 0; limit < 5; limit++) {
      var changed = false, coords = cursorCoords(cm, pos);
      var endCoords = !end || end == pos ? coords : cursorCoords(cm, end);
      var scrollPos = calculateScrollPos(cm, Math.min(coords.left, endCoords.left),
                                         Math.min(coords.top, endCoords.top) - margin,
                                         Math.max(coords.left, endCoords.left),
                                         Math.max(coords.bottom, endCoords.bottom) + margin);
      var startTop = cm.doc.scrollTop, startLeft = cm.doc.scrollLeft;
      if (scrollPos.scrollTop != null) {
        setScrollTop(cm, scrollPos.scrollTop);
        if (Math.abs(cm.doc.scrollTop - startTop) > 1) changed = true;
      }
      if (scrollPos.scrollLeft != null) {
        setScrollLeft(cm, scrollPos.scrollLeft);
        if (Math.abs(cm.doc.scrollLeft - startLeft) > 1) changed = true;
      }
      if (!changed) break;
    }
    return coords;
  }

  // Scroll a given set of coordinates into view (immediately).
  function scrollIntoView(cm, x1, y1, x2, y2) {
    var scrollPos = calculateScrollPos(cm, x1, y1, x2, y2);
    if (scrollPos.scrollTop != null) setScrollTop(cm, scrollPos.scrollTop);
    if (scrollPos.scrollLeft != null) setScrollLeft(cm, scrollPos.scrollLeft);
  }

  // Calculate a new scroll position needed to scroll the given
  // rectangle into view. Returns an object with scrollTop and
  // scrollLeft properties. When these are undefined, the
  // vertical/horizontal position does not need to be adjusted.
  function calculateScrollPos(cm, x1, y1, x2, y2) {
    var display = cm.display, snapMargin = textHeight(cm.display);
    if (y1 < 0) y1 = 0;
    var screentop = cm.curOp && cm.curOp.scrollTop != null ? cm.curOp.scrollTop : display.scroller.scrollTop;
    var screen = displayHeight(cm), result = {};
    if (y2 - y1 > screen) y2 = y1 + screen;
    var docBottom = cm.doc.height + paddingVert(display);
    var atTop = y1 < snapMargin, atBottom = y2 > docBottom - snapMargin;
    if (y1 < screentop) {
      result.scrollTop = atTop ? 0 : y1;
    } else if (y2 > screentop + screen) {
      var newTop = Math.min(y1, (atBottom ? docBottom : y2) - screen);
      if (newTop != screentop) result.scrollTop = newTop;
    }

    var screenleft = cm.curOp && cm.curOp.scrollLeft != null ? cm.curOp.scrollLeft : display.scroller.scrollLeft;
    var screenw = displayWidth(cm) - (cm.options.fixedGutter ? display.gutters.offsetWidth : 0);
    var tooWide = x2 - x1 > screenw;
    if (tooWide) x2 = x1 + screenw;
    if (x1 < 10)
      result.scrollLeft = 0;
    else if (x1 < screenleft)
      result.scrollLeft = Math.max(0, x1 - (tooWide ? 0 : 10));
    else if (x2 > screenw + screenleft - 3)
      result.scrollLeft = x2 + (tooWide ? 0 : 10) - screenw;
    return result;
  }

  // Store a relative adjustment to the scroll position in the current
  // operation (to be applied when the operation finishes).
  function addToScrollPos(cm, left, top) {
    if (left != null || top != null) resolveScrollToPos(cm);
    if (left != null)
      cm.curOp.scrollLeft = (cm.curOp.scrollLeft == null ? cm.doc.scrollLeft : cm.curOp.scrollLeft) + left;
    if (top != null)
      cm.curOp.scrollTop = (cm.curOp.scrollTop == null ? cm.doc.scrollTop : cm.curOp.scrollTop) + top;
  }

  // Make sure that at the end of the operation the current cursor is
  // shown.
  function ensureCursorVisible(cm) {
    resolveScrollToPos(cm);
    var cur = cm.getCursor(), from = cur, to = cur;
    if (!cm.options.lineWrapping) {
      from = cur.ch ? Pos(cur.line, cur.ch - 1) : cur;
      to = Pos(cur.line, cur.ch + 1);
    }
    cm.curOp.scrollToPos = {from: from, to: to, margin: cm.options.cursorScrollMargin, isCursor: true};
  }

  // When an operation has its scrollToPos property set, and another
  // scroll action is applied before the end of the operation, this
  // 'simulates' scrolling that position into view in a cheap way, so
  // that the effect of intermediate scroll commands is not ignored.
  function resolveScrollToPos(cm) {
    var range = cm.curOp.scrollToPos;
    if (range) {
      cm.curOp.scrollToPos = null;
      var from = estimateCoords(cm, range.from), to = estimateCoords(cm, range.to);
      var sPos = calculateScrollPos(cm, Math.min(from.left, to.left),
                                    Math.min(from.top, to.top) - range.margin,
                                    Math.max(from.right, to.right),
                                    Math.max(from.bottom, to.bottom) + range.margin);
      cm.scrollTo(sPos.scrollLeft, sPos.scrollTop);
    }
  }

  // API UTILITIES

  // Indent the given line. The how parameter can be "smart",
  // "add"/null, "subtract", or "prev". When aggressive is false
  // (typically set to true for forced single-line indents), empty
  // lines are not indented, and places where the mode returns Pass
  // are left alone.
  function indentLine(cm, n, how, aggressive) {
    var doc = cm.doc, state;
    if (how == null) how = "add";
    if (how == "smart") {
      // Fall back to "prev" when the mode doesn't have an indentation
      // method.
      if (!doc.mode.indent) how = "prev";
      else state = getStateBefore(cm, n);
    }

    var tabSize = cm.options.tabSize;
    var line = getLine(doc, n), curSpace = countColumn(line.text, null, tabSize);
    if (line.stateAfter) line.stateAfter = null;
    var curSpaceString = line.text.match(/^\s*/)[0], indentation;
    if (!aggressive && !/\S/.test(line.text)) {
      indentation = 0;
      how = "not";
    } else if (how == "smart") {
      indentation = doc.mode.indent(state, line.text.slice(curSpaceString.length), line.text);
      if (indentation == Pass || indentation > 150) {
        if (!aggressive) return;
        how = "prev";
      }
    }
    if (how == "prev") {
      if (n > doc.first) indentation = countColumn(getLine(doc, n-1).text, null, tabSize);
      else indentation = 0;
    } else if (how == "add") {
      indentation = curSpace + cm.options.indentUnit;
    } else if (how == "subtract") {
      indentation = curSpace - cm.options.indentUnit;
    } else if (typeof how == "number") {
      indentation = curSpace + how;
    }
    indentation = Math.max(0, indentation);

    var indentString = "", pos = 0;
    if (cm.options.indentWithTabs)
      for (var i = Math.floor(indentation / tabSize); i; --i) {pos += tabSize; indentString += "\t";}
    if (pos < indentation) indentString += spaceStr(indentation - pos);

    if (indentString != curSpaceString) {
      replaceRange(doc, indentString, Pos(n, 0), Pos(n, curSpaceString.length), "+input");
      line.stateAfter = null;
      return true;
    } else {
      // Ensure that, if the cursor was in the whitespace at the start
      // of the line, it is moved to the end of that space.
      for (var i = 0; i < doc.sel.ranges.length; i++) {
        var range = doc.sel.ranges[i];
        if (range.head.line == n && range.head.ch < curSpaceString.length) {
          var pos = Pos(n, curSpaceString.length);
          replaceOneSelection(doc, i, new Range(pos, pos));
          break;
        }
      }
    }
  }

  // Utility for applying a change to a line by handle or number,
  // returning the number and optionally registering the line as
  // changed.
  function changeLine(doc, handle, changeType, op) {
    var no = handle, line = handle;
    if (typeof handle == "number") line = getLine(doc, clipLine(doc, handle));
    else no = lineNo(handle);
    if (no == null) return null;
    if (op(line, no) && doc.cm) regLineChange(doc.cm, no, changeType);
    return line;
  }

  // Helper for deleting text near the selection(s), used to implement
  // backspace, delete, and similar functionality.
  function deleteNearSelection(cm, compute) {
    var ranges = cm.doc.sel.ranges, kill = [];
    // Build up a set of ranges to kill first, merging overlapping
    // ranges.
    for (var i = 0; i < ranges.length; i++) {
      var toKill = compute(ranges[i]);
      while (kill.length && cmp(toKill.from, lst(kill).to) <= 0) {
        var replaced = kill.pop();
        if (cmp(replaced.from, toKill.from) < 0) {
          toKill.from = replaced.from;
          break;
        }
      }
      kill.push(toKill);
    }
    // Next, remove those actual ranges.
    runInOp(cm, function() {
      for (var i = kill.length - 1; i >= 0; i--)
        replaceRange(cm.doc, "", kill[i].from, kill[i].to, "+delete");
      ensureCursorVisible(cm);
    });
  }

  // Used for horizontal relative motion. Dir is -1 or 1 (left or
  // right), unit can be "char", "column" (like char, but doesn't
  // cross line boundaries), "word" (across next word), or "group" (to
  // the start of next group of word or non-word-non-whitespace
  // chars). The visually param controls whether, in right-to-left
  // text, direction 1 means to move towards the next index in the
  // string, or towards the character to the right of the current
  // position. The resulting position will have a hitSide=true
  // property if it reached the end of the document.
  function findPosH(doc, pos, dir, unit, visually) {
    var line = pos.line, ch = pos.ch, origDir = dir;
    var lineObj = getLine(doc, line);
    var possible = true;
    function findNextLine() {
      var l = line + dir;
      if (l < doc.first || l >= doc.first + doc.size) return (possible = false);
      line = l;
      return lineObj = getLine(doc, l);
    }
    function moveOnce(boundToLine) {
      var next = (visually ? moveVisually : moveLogically)(lineObj, ch, dir, true);
      if (next == null) {
        if (!boundToLine && findNextLine()) {
          if (visually) ch = (dir < 0 ? lineRight : lineLeft)(lineObj);
          else ch = dir < 0 ? lineObj.text.length : 0;
        } else return (possible = false);
      } else ch = next;
      return true;
    }

    if (unit == "char") moveOnce();
    else if (unit == "column") moveOnce(true);
    else if (unit == "word" || unit == "group") {
      var sawType = null, group = unit == "group";
      var helper = doc.cm && doc.cm.getHelper(pos, "wordChars");
      for (var first = true;; first = false) {
        if (dir < 0 && !moveOnce(!first)) break;
        var cur = lineObj.text.charAt(ch) || "\n";
        var type = isWordChar(cur, helper) ? "w"
          : group && cur == "\n" ? "n"
          : !group || /\s/.test(cur) ? null
          : "p";
        if (group && !first && !type) type = "s";
        if (sawType && sawType != type) {
          if (dir < 0) {dir = 1; moveOnce();}
          break;
        }

        if (type) sawType = type;
        if (dir > 0 && !moveOnce(!first)) break;
      }
    }
    var result = skipAtomic(doc, Pos(line, ch), origDir, true);
    if (!possible) result.hitSide = true;
    return result;
  }

  // For relative vertical movement. Dir may be -1 or 1. Unit can be
  // "page" or "line". The resulting position will have a hitSide=true
  // property if it reached the end of the document.
  function findPosV(cm, pos, dir, unit) {
    var doc = cm.doc, x = pos.left, y;
    if (unit == "page") {
      var pageSize = Math.min(cm.display.wrapper.clientHeight, window.innerHeight || document.documentElement.clientHeight);
      y = pos.top + dir * (pageSize - (dir < 0 ? 1.5 : .5) * textHeight(cm.display));
    } else if (unit == "line") {
      y = dir > 0 ? pos.bottom + 3 : pos.top - 3;
    }
    for (;;) {
      var target = coordsChar(cm, x, y);
      if (!target.outside) break;
      if (dir < 0 ? y <= 0 : y >= doc.height) { target.hitSide = true; break; }
      y += dir * 5;
    }
    return target;
  }

  // EDITOR METHODS

  // The publicly visible API. Note that methodOp(f) means
  // 'wrap f in an operation, performed on its `this` parameter'.

  // This is not the complete set of editor methods. Most of the
  // methods defined on the Doc type are also injected into
  // CodeMirror.prototype, for backwards compatibility and
  // convenience.

  CodeMirror.prototype = {
    constructor: CodeMirror,
    focus: function(){window.focus(); this.display.input.focus();},

    setOption: function(option, value) {
      var options = this.options, old = options[option];
      if (options[option] == value && option != "mode") return;
      options[option] = value;
      if (optionHandlers.hasOwnProperty(option))
        operation(this, optionHandlers[option])(this, value, old);
    },

    getOption: function(option) {return this.options[option];},
    getDoc: function() {return this.doc;},

    addKeyMap: function(map, bottom) {
      this.state.keyMaps[bottom ? "push" : "unshift"](getKeyMap(map));
    },
    removeKeyMap: function(map) {
      var maps = this.state.keyMaps;
      for (var i = 0; i < maps.length; ++i)
        if (maps[i] == map || maps[i].name == map) {
          maps.splice(i, 1);
          return true;
        }
    },

    addOverlay: methodOp(function(spec, options) {
      var mode = spec.token ? spec : CodeMirror.getMode(this.options, spec);
      if (mode.startState) throw new Error("Overlays may not be stateful.");
      this.state.overlays.push({mode: mode, modeSpec: spec, opaque: options && options.opaque});
      this.state.modeGen++;
      regChange(this);
    }),
    removeOverlay: methodOp(function(spec) {
      var overlays = this.state.overlays;
      for (var i = 0; i < overlays.length; ++i) {
        var cur = overlays[i].modeSpec;
        if (cur == spec || typeof spec == "string" && cur.name == spec) {
          overlays.splice(i, 1);
          this.state.modeGen++;
          regChange(this);
          return;
        }
      }
    }),

    indentLine: methodOp(function(n, dir, aggressive) {
      if (typeof dir != "string" && typeof dir != "number") {
        if (dir == null) dir = this.options.smartIndent ? "smart" : "prev";
        else dir = dir ? "add" : "subtract";
      }
      if (isLine(this.doc, n)) indentLine(this, n, dir, aggressive);
    }),
    indentSelection: methodOp(function(how) {
      var ranges = this.doc.sel.ranges, end = -1;
      for (var i = 0; i < ranges.length; i++) {
        var range = ranges[i];
        if (!range.empty()) {
          var from = range.from(), to = range.to();
          var start = Math.max(end, from.line);
          end = Math.min(this.lastLine(), to.line - (to.ch ? 0 : 1)) + 1;
          for (var j = start; j < end; ++j)
            indentLine(this, j, how);
          var newRanges = this.doc.sel.ranges;
          if (from.ch == 0 && ranges.length == newRanges.length && newRanges[i].from().ch > 0)
            replaceOneSelection(this.doc, i, new Range(from, newRanges[i].to()), sel_dontScroll);
        } else if (range.head.line > end) {
          indentLine(this, range.head.line, how, true);
          end = range.head.line;
          if (i == this.doc.sel.primIndex) ensureCursorVisible(this);
        }
      }
    }),

    // Fetch the parser token for a given character. Useful for hacks
    // that want to inspect the mode state (say, for completion).
    getTokenAt: function(pos, precise) {
      return takeToken(this, pos, precise);
    },

    getLineTokens: function(line, precise) {
      return takeToken(this, Pos(line), precise, true);
    },

    getTokenTypeAt: function(pos) {
      pos = clipPos(this.doc, pos);
      var styles = getLineStyles(this, getLine(this.doc, pos.line));
      var before = 0, after = (styles.length - 1) / 2, ch = pos.ch;
      var type;
      if (ch == 0) type = styles[2];
      else for (;;) {
        var mid = (before + after) >> 1;
        if ((mid ? styles[mid * 2 - 1] : 0) >= ch) after = mid;
        else if (styles[mid * 2 + 1] < ch) before = mid + 1;
        else { type = styles[mid * 2 + 2]; break; }
      }
      var cut = type ? type.indexOf("cm-overlay ") : -1;
      return cut < 0 ? type : cut == 0 ? null : type.slice(0, cut - 1);
    },

    getModeAt: function(pos) {
      var mode = this.doc.mode;
      if (!mode.innerMode) return mode;
      return CodeMirror.innerMode(mode, this.getTokenAt(pos).state).mode;
    },

    getHelper: function(pos, type) {
      return this.getHelpers(pos, type)[0];
    },

    getHelpers: function(pos, type) {
      var found = [];
      if (!helpers.hasOwnProperty(type)) return found;
      var help = helpers[type], mode = this.getModeAt(pos);
      if (typeof mode[type] == "string") {
        if (help[mode[type]]) found.push(help[mode[type]]);
      } else if (mode[type]) {
        for (var i = 0; i < mode[type].length; i++) {
          var val = help[mode[type][i]];
          if (val) found.push(val);
        }
      } else if (mode.helperType && help[mode.helperType]) {
        found.push(help[mode.helperType]);
      } else if (help[mode.name]) {
        found.push(help[mode.name]);
      }
      for (var i = 0; i < help._global.length; i++) {
        var cur = help._global[i];
        if (cur.pred(mode, this) && indexOf(found, cur.val) == -1)
          found.push(cur.val);
      }
      return found;
    },

    getStateAfter: function(line, precise) {
      var doc = this.doc;
      line = clipLine(doc, line == null ? doc.first + doc.size - 1: line);
      return getStateBefore(this, line + 1, precise);
    },

    cursorCoords: function(start, mode) {
      var pos, range = this.doc.sel.primary();
      if (start == null) pos = range.head;
      else if (typeof start == "object") pos = clipPos(this.doc, start);
      else pos = start ? range.from() : range.to();
      return cursorCoords(this, pos, mode || "page");
    },

    charCoords: function(pos, mode) {
      return charCoords(this, clipPos(this.doc, pos), mode || "page");
    },

    coordsChar: function(coords, mode) {
      coords = fromCoordSystem(this, coords, mode || "page");
      return coordsChar(this, coords.left, coords.top);
    },

    lineAtHeight: function(height, mode) {
      height = fromCoordSystem(this, {top: height, left: 0}, mode || "page").top;
      return lineAtHeight(this.doc, height + this.display.viewOffset);
    },
    heightAtLine: function(line, mode) {
      var end = false, lineObj;
      if (typeof line == "number") {
        var last = this.doc.first + this.doc.size - 1;
        if (line < this.doc.first) line = this.doc.first;
        else if (line > last) { line = last; end = true; }
        lineObj = getLine(this.doc, line);
      } else {
        lineObj = line;
      }
      return intoCoordSystem(this, lineObj, {top: 0, left: 0}, mode || "page").top +
        (end ? this.doc.height - heightAtLine(lineObj) : 0);
    },

    defaultTextHeight: function() { return textHeight(this.display); },
    defaultCharWidth: function() { return charWidth(this.display); },

    setGutterMarker: methodOp(function(line, gutterID, value) {
      return changeLine(this.doc, line, "gutter", function(line) {
        var markers = line.gutterMarkers || (line.gutterMarkers = {});
        markers[gutterID] = value;
        if (!value && isEmpty(markers)) line.gutterMarkers = null;
        return true;
      });
    }),

    clearGutter: methodOp(function(gutterID) {
      var cm = this, doc = cm.doc, i = doc.first;
      doc.iter(function(line) {
        if (line.gutterMarkers && line.gutterMarkers[gutterID]) {
          line.gutterMarkers[gutterID] = null;
          regLineChange(cm, i, "gutter");
          if (isEmpty(line.gutterMarkers)) line.gutterMarkers = null;
        }
        ++i;
      });
    }),

    lineInfo: function(line) {
      if (typeof line == "number") {
        if (!isLine(this.doc, line)) return null;
        var n = line;
        line = getLine(this.doc, line);
        if (!line) return null;
      } else {
        var n = lineNo(line);
        if (n == null) return null;
      }
      return {line: n, handle: line, text: line.text, gutterMarkers: line.gutterMarkers,
              textClass: line.textClass, bgClass: line.bgClass, wrapClass: line.wrapClass,
              widgets: line.widgets};
    },

    getViewport: function() { return {from: this.display.viewFrom, to: this.display.viewTo};},

    addWidget: function(pos, node, scroll, vert, horiz) {
      var display = this.display;
      pos = cursorCoords(this, clipPos(this.doc, pos));
      var top = pos.bottom, left = pos.left;
      node.style.position = "absolute";
      node.setAttribute("cm-ignore-events", "true");
      this.display.input.setUneditable(node);
      display.sizer.appendChild(node);
      if (vert == "over") {
        top = pos.top;
      } else if (vert == "above" || vert == "near") {
        var vspace = Math.max(display.wrapper.clientHeight, this.doc.height),
        hspace = Math.max(display.sizer.clientWidth, display.lineSpace.clientWidth);
        // Default to positioning above (if specified and possible); otherwise default to positioning below
        if ((vert == 'above' || pos.bottom + node.offsetHeight > vspace) && pos.top > node.offsetHeight)
          top = pos.top - node.offsetHeight;
        else if (pos.bottom + node.offsetHeight <= vspace)
          top = pos.bottom;
        if (left + node.offsetWidth > hspace)
          left = hspace - node.offsetWidth;
      }
      node.style.top = top + "px";
      node.style.left = node.style.right = "";
      if (horiz == "right") {
        left = display.sizer.clientWidth - node.offsetWidth;
        node.style.right = "0px";
      } else {
        if (horiz == "left") left = 0;
        else if (horiz == "middle") left = (display.sizer.clientWidth - node.offsetWidth) / 2;
        node.style.left = left + "px";
      }
      if (scroll)
        scrollIntoView(this, left, top, left + node.offsetWidth, top + node.offsetHeight);
    },

    triggerOnKeyDown: methodOp(onKeyDown),
    triggerOnKeyPress: methodOp(onKeyPress),
    triggerOnKeyUp: onKeyUp,

    execCommand: function(cmd) {
      if (commands.hasOwnProperty(cmd))
        return commands[cmd](this);
    },

    triggerElectric: methodOp(function(text) { triggerElectric(this, text); }),

    findPosH: function(from, amount, unit, visually) {
      var dir = 1;
      if (amount < 0) { dir = -1; amount = -amount; }
      for (var i = 0, cur = clipPos(this.doc, from); i < amount; ++i) {
        cur = findPosH(this.doc, cur, dir, unit, visually);
        if (cur.hitSide) break;
      }
      return cur;
    },

    moveH: methodOp(function(dir, unit) {
      var cm = this;
      cm.extendSelectionsBy(function(range) {
        if (cm.display.shift || cm.doc.extend || range.empty())
          return findPosH(cm.doc, range.head, dir, unit, cm.options.rtlMoveVisually);
        else
          return dir < 0 ? range.from() : range.to();
      }, sel_move);
    }),

    deleteH: methodOp(function(dir, unit) {
      var sel = this.doc.sel, doc = this.doc;
      if (sel.somethingSelected())
        doc.replaceSelection("", null, "+delete");
      else
        deleteNearSelection(this, function(range) {
          var other = findPosH(doc, range.head, dir, unit, false);
          return dir < 0 ? {from: other, to: range.head} : {from: range.head, to: other};
        });
    }),

    findPosV: function(from, amount, unit, goalColumn) {
      var dir = 1, x = goalColumn;
      if (amount < 0) { dir = -1; amount = -amount; }
      for (var i = 0, cur = clipPos(this.doc, from); i < amount; ++i) {
        var coords = cursorCoords(this, cur, "div");
        if (x == null) x = coords.left;
        else coords.left = x;
        cur = findPosV(this, coords, dir, unit);
        if (cur.hitSide) break;
      }
      return cur;
    },

    moveV: methodOp(function(dir, unit) {
      var cm = this, doc = this.doc, goals = [];
      var collapse = !cm.display.shift && !doc.extend && doc.sel.somethingSelected();
      doc.extendSelectionsBy(function(range) {
        if (collapse)
          return dir < 0 ? range.from() : range.to();
        var headPos = cursorCoords(cm, range.head, "div");
        if (range.goalColumn != null) headPos.left = range.goalColumn;
        goals.push(headPos.left);
        var pos = findPosV(cm, headPos, dir, unit);
        if (unit == "page" && range == doc.sel.primary())
          addToScrollPos(cm, null, charCoords(cm, pos, "div").top - headPos.top);
        return pos;
      }, sel_move);
      if (goals.length) for (var i = 0; i < doc.sel.ranges.length; i++)
        doc.sel.ranges[i].goalColumn = goals[i];
    }),

    // Find the word at the given position (as returned by coordsChar).
    findWordAt: function(pos) {
      var doc = this.doc, line = getLine(doc, pos.line).text;
      var start = pos.ch, end = pos.ch;
      if (line) {
        var helper = this.getHelper(pos, "wordChars");
        if ((pos.xRel < 0 || end == line.length) && start) --start; else ++end;
        var startChar = line.charAt(start);
        var check = isWordChar(startChar, helper)
          ? function(ch) { return isWordChar(ch, helper); }
          : /\s/.test(startChar) ? function(ch) {return /\s/.test(ch);}
          : function(ch) {return !/\s/.test(ch) && !isWordChar(ch);};
        while (start > 0 && check(line.charAt(start - 1))) --start;
        while (end < line.length && check(line.charAt(end))) ++end;
      }
      return new Range(Pos(pos.line, start), Pos(pos.line, end));
    },

    toggleOverwrite: function(value) {
      if (value != null && value == this.state.overwrite) return;
      if (this.state.overwrite = !this.state.overwrite)
        addClass(this.display.cursorDiv, "CodeMirror-overwrite");
      else
        rmClass(this.display.cursorDiv, "CodeMirror-overwrite");

      signal(this, "overwriteToggle", this, this.state.overwrite);
    },
    hasFocus: function() { return this.display.input.getField() == activeElt(); },

    scrollTo: methodOp(function(x, y) {
      if (x != null || y != null) resolveScrollToPos(this);
      if (x != null) this.curOp.scrollLeft = x;
      if (y != null) this.curOp.scrollTop = y;
    }),
    getScrollInfo: function() {
      var scroller = this.display.scroller;
      return {left: scroller.scrollLeft, top: scroller.scrollTop,
              height: scroller.scrollHeight - scrollGap(this) - this.display.barHeight,
              width: scroller.scrollWidth - scrollGap(this) - this.display.barWidth,
              clientHeight: displayHeight(this), clientWidth: displayWidth(this)};
    },

    scrollIntoView: methodOp(function(range, margin) {
      if (range == null) {
        range = {from: this.doc.sel.primary().head, to: null};
        if (margin == null) margin = this.options.cursorScrollMargin;
      } else if (typeof range == "number") {
        range = {from: Pos(range, 0), to: null};
      } else if (range.from == null) {
        range = {from: range, to: null};
      }
      if (!range.to) range.to = range.from;
      range.margin = margin || 0;

      if (range.from.line != null) {
        resolveScrollToPos(this);
        this.curOp.scrollToPos = range;
      } else {
        var sPos = calculateScrollPos(this, Math.min(range.from.left, range.to.left),
                                      Math.min(range.from.top, range.to.top) - range.margin,
                                      Math.max(range.from.right, range.to.right),
                                      Math.max(range.from.bottom, range.to.bottom) + range.margin);
        this.scrollTo(sPos.scrollLeft, sPos.scrollTop);
      }
    }),

    setSize: methodOp(function(width, height) {
      var cm = this;
      function interpret(val) {
        return typeof val == "number" || /^\d+$/.test(String(val)) ? val + "px" : val;
      }
      if (width != null) cm.display.wrapper.style.width = interpret(width);
      if (height != null) cm.display.wrapper.style.height = interpret(height);
      if (cm.options.lineWrapping) clearLineMeasurementCache(this);
      var lineNo = cm.display.viewFrom;
      cm.doc.iter(lineNo, cm.display.viewTo, function(line) {
        if (line.widgets) for (var i = 0; i < line.widgets.length; i++)
          if (line.widgets[i].noHScroll) { regLineChange(cm, lineNo, "widget"); break; }
        ++lineNo;
      });
      cm.curOp.forceUpdate = true;
      signal(cm, "refresh", this);
    }),

    operation: function(f){return runInOp(this, f);},

    refresh: methodOp(function() {
      var oldHeight = this.display.cachedTextHeight;
      regChange(this);
      this.curOp.forceUpdate = true;
      clearCaches(this);
      this.scrollTo(this.doc.scrollLeft, this.doc.scrollTop);
      updateGutterSpace(this);
      if (oldHeight == null || Math.abs(oldHeight - textHeight(this.display)) > .5)
        estimateLineHeights(this);
      signal(this, "refresh", this);
    }),

    swapDoc: methodOp(function(doc) {
      var old = this.doc;
      old.cm = null;
      attachDoc(this, doc);
      clearCaches(this);
      this.display.input.reset();
      this.scrollTo(doc.scrollLeft, doc.scrollTop);
      this.curOp.forceScroll = true;
      signalLater(this, "swapDoc", this, old);
      return old;
    }),

    getInputField: function(){return this.display.input.getField();},
    getWrapperElement: function(){return this.display.wrapper;},
    getScrollerElement: function(){return this.display.scroller;},
    getGutterElement: function(){return this.display.gutters;}
  };
  eventMixin(CodeMirror);

  // OPTION DEFAULTS

  // The default configuration options.
  var defaults = CodeMirror.defaults = {};
  // Functions to run when options are changed.
  var optionHandlers = CodeMirror.optionHandlers = {};

  function option(name, deflt, handle, notOnInit) {
    CodeMirror.defaults[name] = deflt;
    if (handle) optionHandlers[name] =
      notOnInit ? function(cm, val, old) {if (old != Init) handle(cm, val, old);} : handle;
  }

  // Passed to option handlers when there is no old value.
  var Init = CodeMirror.Init = {toString: function(){return "CodeMirror.Init";}};

  // These two are, on init, called from the constructor because they
  // have to be initialized before the editor can start at all.
  option("value", "", function(cm, val) {
    cm.setValue(val);
  }, true);
  option("mode", null, function(cm, val) {
    cm.doc.modeOption = val;
    loadMode(cm);
  }, true);

  option("indentUnit", 2, loadMode, true);
  option("indentWithTabs", false);
  option("smartIndent", true);
  option("tabSize", 4, function(cm) {
    resetModeState(cm);
    clearCaches(cm);
    regChange(cm);
  }, true);
  option("specialChars", /[\t\u0000-\u0019\u00ad\u200b-\u200f\u2028\u2029\ufeff]/g, function(cm, val, old) {
    cm.state.specialChars = new RegExp(val.source + (val.test("\t") ? "" : "|\t"), "g");
    if (old != CodeMirror.Init) cm.refresh();
  });
  option("specialCharPlaceholder", defaultSpecialCharPlaceholder, function(cm) {cm.refresh();}, true);
  option("electricChars", true);
  option("inputStyle", mobile ? "contenteditable" : "textarea", function() {
    throw new Error("inputStyle can not (yet) be changed in a running editor"); // FIXME
  }, true);
  option("rtlMoveVisually", !windows);
  option("wholeLineUpdateBefore", true);

  option("theme", "default", function(cm) {
    themeChanged(cm);
    guttersChanged(cm);
  }, true);
  option("keyMap", "default", function(cm, val, old) {
    var next = getKeyMap(val);
    var prev = old != CodeMirror.Init && getKeyMap(old);
    if (prev && prev.detach) prev.detach(cm, next);
    if (next.attach) next.attach(cm, prev || null);
  });
  option("extraKeys", null);

  option("lineWrapping", false, wrappingChanged, true);
  option("gutters", [], function(cm) {
    setGuttersForLineNumbers(cm.options);
    guttersChanged(cm);
  }, true);
  option("fixedGutter", true, function(cm, val) {
    cm.display.gutters.style.left = val ? compensateForHScroll(cm.display) + "px" : "0";
    cm.refresh();
  }, true);
  option("coverGutterNextToScrollbar", false, function(cm) {updateScrollbars(cm);}, true);
  option("scrollbarStyle", "native", function(cm) {
    initScrollbars(cm);
    updateScrollbars(cm);
    cm.display.scrollbars.setScrollTop(cm.doc.scrollTop);
    cm.display.scrollbars.setScrollLeft(cm.doc.scrollLeft);
  }, true);
  option("lineNumbers", false, function(cm) {
    setGuttersForLineNumbers(cm.options);
    guttersChanged(cm);
  }, true);
  option("firstLineNumber", 1, guttersChanged, true);
  option("lineNumberFormatter", function(integer) {return integer;}, guttersChanged, true);
  option("showCursorWhenSelecting", false, updateSelection, true);

  option("resetSelectionOnContextMenu", true);
  option("lineWiseCopyCut", true);

  option("readOnly", false, function(cm, val) {
    if (val == "nocursor") {
      onBlur(cm);
      cm.display.input.blur();
      cm.display.disabled = true;
    } else {
      cm.display.disabled = false;
      if (!val) cm.display.input.reset();
    }
  });
  option("disableInput", false, function(cm, val) {if (!val) cm.display.input.reset();}, true);
  option("dragDrop", true, dragDropChanged);

  option("cursorBlinkRate", 530);
  option("cursorScrollMargin", 0);
  option("cursorHeight", 1, updateSelection, true);
  option("singleCursorHeightPerLine", true, updateSelection, true);
  option("workTime", 100);
  option("workDelay", 100);
  option("flattenSpans", true, resetModeState, true);
  option("addModeClass", false, resetModeState, true);
  option("pollInterval", 100);
  option("undoDepth", 200, function(cm, val){cm.doc.history.undoDepth = val;});
  option("historyEventDelay", 1250);
  option("viewportMargin", 10, function(cm){cm.refresh();}, true);
  option("maxHighlightLength", 10000, resetModeState, true);
  option("moveInputWithCursor", true, function(cm, val) {
    if (!val) cm.display.input.resetPosition();
  });

  option("tabindex", null, function(cm, val) {
    cm.display.input.getField().tabIndex = val || "";
  });
  option("autofocus", null);

  // MODE DEFINITION AND QUERYING

  // Known modes, by name and by MIME
  var modes = CodeMirror.modes = {}, mimeModes = CodeMirror.mimeModes = {};

  // Extra arguments are stored as the mode's dependencies, which is
  // used by (legacy) mechanisms like loadmode.js to automatically
  // load a mode. (Preferred mechanism is the require/define calls.)
  CodeMirror.defineMode = function(name, mode) {
    if (!CodeMirror.defaults.mode && name != "null") CodeMirror.defaults.mode = name;
    if (arguments.length > 2)
      mode.dependencies = Array.prototype.slice.call(arguments, 2);
    modes[name] = mode;
  };

  CodeMirror.defineMIME = function(mime, spec) {
    mimeModes[mime] = spec;
  };

  // Given a MIME type, a {name, ...options} config object, or a name
  // string, return a mode config object.
  CodeMirror.resolveMode = function(spec) {
    if (typeof spec == "string" && mimeModes.hasOwnProperty(spec)) {
      spec = mimeModes[spec];
    } else if (spec && typeof spec.name == "string" && mimeModes.hasOwnProperty(spec.name)) {
      var found = mimeModes[spec.name];
      if (typeof found == "string") found = {name: found};
      spec = createObj(found, spec);
      spec.name = found.name;
    } else if (typeof spec == "string" && /^[\w\-]+\/[\w\-]+\+xml$/.test(spec)) {
      return CodeMirror.resolveMode("application/xml");
    }
    if (typeof spec == "string") return {name: spec};
    else return spec || {name: "null"};
  };

  // Given a mode spec (anything that resolveMode accepts), find and
  // initialize an actual mode object.
  CodeMirror.getMode = function(options, spec) {
    var spec = CodeMirror.resolveMode(spec);
    var mfactory = modes[spec.name];
    if (!mfactory) return CodeMirror.getMode(options, "text/plain");
    var modeObj = mfactory(options, spec);
    if (modeExtensions.hasOwnProperty(spec.name)) {
      var exts = modeExtensions[spec.name];
      for (var prop in exts) {
        if (!exts.hasOwnProperty(prop)) continue;
        if (modeObj.hasOwnProperty(prop)) modeObj["_" + prop] = modeObj[prop];
        modeObj[prop] = exts[prop];
      }
    }
    modeObj.name = spec.name;
    if (spec.helperType) modeObj.helperType = spec.helperType;
    if (spec.modeProps) for (var prop in spec.modeProps)
      modeObj[prop] = spec.modeProps[prop];

    return modeObj;
  };

  // Minimal default mode.
  CodeMirror.defineMode("null", function() {
    return {token: function(stream) {stream.skipToEnd();}};
  });
  CodeMirror.defineMIME("text/plain", "null");

  // This can be used to attach properties to mode objects from
  // outside the actual mode definition.
  var modeExtensions = CodeMirror.modeExtensions = {};
  CodeMirror.extendMode = function(mode, properties) {
    var exts = modeExtensions.hasOwnProperty(mode) ? modeExtensions[mode] : (modeExtensions[mode] = {});
    copyObj(properties, exts);
  };

  // EXTENSIONS

  CodeMirror.defineExtension = function(name, func) {
    CodeMirror.prototype[name] = func;
  };
  CodeMirror.defineDocExtension = function(name, func) {
    Doc.prototype[name] = func;
  };
  CodeMirror.defineOption = option;

  var initHooks = [];
  CodeMirror.defineInitHook = function(f) {initHooks.push(f);};

  var helpers = CodeMirror.helpers = {};
  CodeMirror.registerHelper = function(type, name, value) {
    if (!helpers.hasOwnProperty(type)) helpers[type] = CodeMirror[type] = {_global: []};
    helpers[type][name] = value;
  };
  CodeMirror.registerGlobalHelper = function(type, name, predicate, value) {
    CodeMirror.registerHelper(type, name, value);
    helpers[type]._global.push({pred: predicate, val: value});
  };

  // MODE STATE HANDLING

  // Utility functions for working with state. Exported because nested
  // modes need to do this for their inner modes.

  var copyState = CodeMirror.copyState = function(mode, state) {
    if (state === true) return state;
    if (mode.copyState) return mode.copyState(state);
    var nstate = {};
    for (var n in state) {
      var val = state[n];
      if (val instanceof Array) val = val.concat([]);
      nstate[n] = val;
    }
    return nstate;
  };

  var startState = CodeMirror.startState = function(mode, a1, a2) {
    return mode.startState ? mode.startState(a1, a2) : true;
  };

  // Given a mode and a state (for that mode), find the inner mode and
  // state at the position that the state refers to.
  CodeMirror.innerMode = function(mode, state) {
    while (mode.innerMode) {
      var info = mode.innerMode(state);
      if (!info || info.mode == mode) break;
      state = info.state;
      mode = info.mode;
    }
    return info || {mode: mode, state: state};
  };

  // STANDARD COMMANDS

  // Commands are parameter-less actions that can be performed on an
  // editor, mostly used for keybindings.
  var commands = CodeMirror.commands = {
    selectAll: function(cm) {cm.setSelection(Pos(cm.firstLine(), 0), Pos(cm.lastLine()), sel_dontScroll);},
    singleSelection: function(cm) {
      cm.setSelection(cm.getCursor("anchor"), cm.getCursor("head"), sel_dontScroll);
    },
    killLine: function(cm) {
      deleteNearSelection(cm, function(range) {
        if (range.empty()) {
          var len = getLine(cm.doc, range.head.line).text.length;
          if (range.head.ch == len && range.head.line < cm.lastLine())
            return {from: range.head, to: Pos(range.head.line + 1, 0)};
          else
            return {from: range.head, to: Pos(range.head.line, len)};
        } else {
          return {from: range.from(), to: range.to()};
        }
      });
    },
    deleteLine: function(cm) {
      deleteNearSelection(cm, function(range) {
        return {from: Pos(range.from().line, 0),
                to: clipPos(cm.doc, Pos(range.to().line + 1, 0))};
      });
    },
    delLineLeft: function(cm) {
      deleteNearSelection(cm, function(range) {
        return {from: Pos(range.from().line, 0), to: range.from()};
      });
    },
    delWrappedLineLeft: function(cm) {
      deleteNearSelection(cm, function(range) {
        var top = cm.charCoords(range.head, "div").top + 5;
        var leftPos = cm.coordsChar({left: 0, top: top}, "div");
        return {from: leftPos, to: range.from()};
      });
    },
    delWrappedLineRight: function(cm) {
      deleteNearSelection(cm, function(range) {
        var top = cm.charCoords(range.head, "div").top + 5;
        var rightPos = cm.coordsChar({left: cm.display.lineDiv.offsetWidth + 100, top: top}, "div");
        return {from: range.from(), to: rightPos };
      });
    },
    undo: function(cm) {cm.undo();},
    redo: function(cm) {cm.redo();},
    undoSelection: function(cm) {cm.undoSelection();},
    redoSelection: function(cm) {cm.redoSelection();},
    goDocStart: function(cm) {cm.extendSelection(Pos(cm.firstLine(), 0));},
    goDocEnd: function(cm) {cm.extendSelection(Pos(cm.lastLine()));},
    goLineStart: function(cm) {
      cm.extendSelectionsBy(function(range) { return lineStart(cm, range.head.line); },
                            {origin: "+move", bias: 1});
    },
    goLineStartSmart: function(cm) {
      cm.extendSelectionsBy(function(range) {
        return lineStartSmart(cm, range.head);
      }, {origin: "+move", bias: 1});
    },
    goLineEnd: function(cm) {
      cm.extendSelectionsBy(function(range) { return lineEnd(cm, range.head.line); },
                            {origin: "+move", bias: -1});
    },
    goLineRight: function(cm) {
      cm.extendSelectionsBy(function(range) {
        var top = cm.charCoords(range.head, "div").top + 5;
        return cm.coordsChar({left: cm.display.lineDiv.offsetWidth + 100, top: top}, "div");
      }, sel_move);
    },
    goLineLeft: function(cm) {
      cm.extendSelectionsBy(function(range) {
        var top = cm.charCoords(range.head, "div").top + 5;
        return cm.coordsChar({left: 0, top: top}, "div");
      }, sel_move);
    },
    goLineLeftSmart: function(cm) {
      cm.extendSelectionsBy(function(range) {
        var top = cm.charCoords(range.head, "div").top + 5;
        var pos = cm.coordsChar({left: 0, top: top}, "div");
        if (pos.ch < cm.getLine(pos.line).search(/\S/)) return lineStartSmart(cm, range.head);
        return pos;
      }, sel_move);
    },
    goLineUp: function(cm) {cm.moveV(-1, "line");},
    goLineDown: function(cm) {cm.moveV(1, "line");},
    goPageUp: function(cm) {cm.moveV(-1, "page");},
    goPageDown: function(cm) {cm.moveV(1, "page");},
    goCharLeft: function(cm) {cm.moveH(-1, "char");},
    goCharRight: function(cm) {cm.moveH(1, "char");},
    goColumnLeft: function(cm) {cm.moveH(-1, "column");},
    goColumnRight: function(cm) {cm.moveH(1, "column");},
    goWordLeft: function(cm) {cm.moveH(-1, "word");},
    goGroupRight: function(cm) {cm.moveH(1, "group");},
    goGroupLeft: function(cm) {cm.moveH(-1, "group");},
    goWordRight: function(cm) {cm.moveH(1, "word");},
    delCharBefore: function(cm) {cm.deleteH(-1, "char");},
    delCharAfter: function(cm) {cm.deleteH(1, "char");},
    delWordBefore: function(cm) {cm.deleteH(-1, "word");},
    delWordAfter: function(cm) {cm.deleteH(1, "word");},
    delGroupBefore: function(cm) {cm.deleteH(-1, "group");},
    delGroupAfter: function(cm) {cm.deleteH(1, "group");},
    indentAuto: function(cm) {cm.indentSelection("smart");},
    indentMore: function(cm) {cm.indentSelection("add");},
    indentLess: function(cm) {cm.indentSelection("subtract");},
    insertTab: function(cm) {cm.replaceSelection("\t");},
    insertSoftTab: function(cm) {
      var spaces = [], ranges = cm.listSelections(), tabSize = cm.options.tabSize;
      for (var i = 0; i < ranges.length; i++) {
        var pos = ranges[i].from();
        var col = countColumn(cm.getLine(pos.line), pos.ch, tabSize);
        spaces.push(new Array(tabSize - col % tabSize + 1).join(" "));
      }
      cm.replaceSelections(spaces);
    },
    defaultTab: function(cm) {
      if (cm.somethingSelected()) cm.indentSelection("add");
      else cm.execCommand("insertTab");
    },
    transposeChars: function(cm) {
      runInOp(cm, function() {
        var ranges = cm.listSelections(), newSel = [];
        for (var i = 0; i < ranges.length; i++) {
          var cur = ranges[i].head, line = getLine(cm.doc, cur.line).text;
          if (line) {
            if (cur.ch == line.length) cur = new Pos(cur.line, cur.ch - 1);
            if (cur.ch > 0) {
              cur = new Pos(cur.line, cur.ch + 1);
              cm.replaceRange(line.charAt(cur.ch - 1) + line.charAt(cur.ch - 2),
                              Pos(cur.line, cur.ch - 2), cur, "+transpose");
            } else if (cur.line > cm.doc.first) {
              var prev = getLine(cm.doc, cur.line - 1).text;
              if (prev)
                cm.replaceRange(line.charAt(0) + "\n" + prev.charAt(prev.length - 1),
                                Pos(cur.line - 1, prev.length - 1), Pos(cur.line, 1), "+transpose");
            }
          }
          newSel.push(new Range(cur, cur));
        }
        cm.setSelections(newSel);
      });
    },
    newlineAndIndent: function(cm) {
      runInOp(cm, function() {
        var len = cm.listSelections().length;
        for (var i = 0; i < len; i++) {
          var range = cm.listSelections()[i];
          cm.replaceRange("\n", range.anchor, range.head, "+input");
          cm.indentLine(range.from().line + 1, null, true);
          ensureCursorVisible(cm);
        }
      });
    },
    toggleOverwrite: function(cm) {cm.toggleOverwrite();}
  };


  // STANDARD KEYMAPS

  var keyMap = CodeMirror.keyMap = {};

  keyMap.basic = {
    "Left": "goCharLeft", "Right": "goCharRight", "Up": "goLineUp", "Down": "goLineDown",
    "End": "goLineEnd", "Home": "goLineStartSmart", "PageUp": "goPageUp", "PageDown": "goPageDown",
    "Delete": "delCharAfter", "Backspace": "delCharBefore", "Shift-Backspace": "delCharBefore",
    "Tab": "defaultTab", "Shift-Tab": "indentAuto",
    "Enter": "newlineAndIndent", "Insert": "toggleOverwrite",
    "Esc": "singleSelection"
  };
  // Note that the save and find-related commands aren't defined by
  // default. User code or addons can define them. Unknown commands
  // are simply ignored.
  keyMap.pcDefault = {
    "Ctrl-A": "selectAll", "Ctrl-D": "deleteLine", "Ctrl-Z": "undo", "Shift-Ctrl-Z": "redo", "Ctrl-Y": "redo",
    "Ctrl-Home": "goDocStart", "Ctrl-End": "goDocEnd", "Ctrl-Up": "goLineUp", "Ctrl-Down": "goLineDown",
    "Ctrl-Left": "goGroupLeft", "Ctrl-Right": "goGroupRight", "Alt-Left": "goLineStart", "Alt-Right": "goLineEnd",
    "Ctrl-Backspace": "delGroupBefore", "Ctrl-Delete": "delGroupAfter", "Ctrl-S": "save", "Ctrl-F": "find",
    "Ctrl-G": "findNext", "Shift-Ctrl-G": "findPrev", "Shift-Ctrl-F": "replace", "Shift-Ctrl-R": "replaceAll",
    "Ctrl-[": "indentLess", "Ctrl-]": "indentMore",
    "Ctrl-U": "undoSelection", "Shift-Ctrl-U": "redoSelection", "Alt-U": "redoSelection",
    fallthrough: "basic"
  };
  // Very basic readline/emacs-style bindings, which are standard on Mac.
  keyMap.emacsy = {
    "Ctrl-F": "goCharRight", "Ctrl-B": "goCharLeft", "Ctrl-P": "goLineUp", "Ctrl-N": "goLineDown",
    "Alt-F": "goWordRight", "Alt-B": "goWordLeft", "Ctrl-A": "goLineStart", "Ctrl-E": "goLineEnd",
    "Ctrl-V": "goPageDown", "Shift-Ctrl-V": "goPageUp", "Ctrl-D": "delCharAfter", "Ctrl-H": "delCharBefore",
    "Alt-D": "delWordAfter", "Alt-Backspace": "delWordBefore", "Ctrl-K": "killLine", "Ctrl-T": "transposeChars"
  };
  keyMap.macDefault = {
    "Cmd-A": "selectAll", "Cmd-D": "deleteLine", "Cmd-Z": "undo", "Shift-Cmd-Z": "redo", "Cmd-Y": "redo",
    "Cmd-Home": "goDocStart", "Cmd-Up": "goDocStart", "Cmd-End": "goDocEnd", "Cmd-Down": "goDocEnd", "Alt-Left": "goGroupLeft",
    "Alt-Right": "goGroupRight", "Cmd-Left": "goLineLeft", "Cmd-Right": "goLineRight", "Alt-Backspace": "delGroupBefore",
    "Ctrl-Alt-Backspace": "delGroupAfter", "Alt-Delete": "delGroupAfter", "Cmd-S": "save", "Cmd-F": "find",
    "Cmd-G": "findNext", "Shift-Cmd-G": "findPrev", "Cmd-Alt-F": "replace", "Shift-Cmd-Alt-F": "replaceAll",
    "Cmd-[": "indentLess", "Cmd-]": "indentMore", "Cmd-Backspace": "delWrappedLineLeft", "Cmd-Delete": "delWrappedLineRight",
    "Cmd-U": "undoSelection", "Shift-Cmd-U": "redoSelection", "Ctrl-Up": "goDocStart", "Ctrl-Down": "goDocEnd",
    fallthrough: ["basic", "emacsy"]
  };
  keyMap["default"] = mac ? keyMap.macDefault : keyMap.pcDefault;

  // KEYMAP DISPATCH

  function normalizeKeyName(name) {
    var parts = name.split(/-(?!$)/), name = parts[parts.length - 1];
    var alt, ctrl, shift, cmd;
    for (var i = 0; i < parts.length - 1; i++) {
      var mod = parts[i];
      if (/^(cmd|meta|m)$/i.test(mod)) cmd = true;
      else if (/^a(lt)?$/i.test(mod)) alt = true;
      else if (/^(c|ctrl|control)$/i.test(mod)) ctrl = true;
      else if (/^s(hift)$/i.test(mod)) shift = true;
      else throw new Error("Unrecognized modifier name: " + mod);
    }
    if (alt) name = "Alt-" + name;
    if (ctrl) name = "Ctrl-" + name;
    if (cmd) name = "Cmd-" + name;
    if (shift) name = "Shift-" + name;
    return name;
  }

  // This is a kludge to keep keymaps mostly working as raw objects
  // (backwards compatibility) while at the same time support features
  // like normalization and multi-stroke key bindings. It compiles a
  // new normalized keymap, and then updates the old object to reflect
  // this.
  CodeMirror.normalizeKeyMap = function(keymap) {
    var copy = {};
    for (var keyname in keymap) if (keymap.hasOwnProperty(keyname)) {
      var value = keymap[keyname];
      if (/^(name|fallthrough|(de|at)tach)$/.test(keyname)) continue;
      if (value == "...") { delete keymap[keyname]; continue; }

      var keys = map(keyname.split(" "), normalizeKeyName);
      for (var i = 0; i < keys.length; i++) {
        var val, name;
        if (i == keys.length - 1) {
          name = keys.join(" ");
          val = value;
        } else {
          name = keys.slice(0, i + 1).join(" ");
          val = "...";
        }
        var prev = copy[name];
        if (!prev) copy[name] = val;
        else if (prev != val) throw new Error("Inconsistent bindings for " + name);
      }
      delete keymap[keyname];
    }
    for (var prop in copy) keymap[prop] = copy[prop];
    return keymap;
  };

  var lookupKey = CodeMirror.lookupKey = function(key, map, handle, context) {
    map = getKeyMap(map);
    var found = map.call ? map.call(key, context) : map[key];
    if (found === false) return "nothing";
    if (found === "...") return "multi";
    if (found != null && handle(found)) return "handled";

    if (map.fallthrough) {
      if (Object.prototype.toString.call(map.fallthrough) != "[object Array]")
        return lookupKey(key, map.fallthrough, handle, context);
      for (var i = 0; i < map.fallthrough.length; i++) {
        var result = lookupKey(key, map.fallthrough[i], handle, context);
        if (result) return result;
      }
    }
  };

  // Modifier key presses don't count as 'real' key presses for the
  // purpose of keymap fallthrough.
  var isModifierKey = CodeMirror.isModifierKey = function(value) {
    var name = typeof value == "string" ? value : keyNames[value.keyCode];
    return name == "Ctrl" || name == "Alt" || name == "Shift" || name == "Mod";
  };

  // Look up the name of a key as indicated by an event object.
  var keyName = CodeMirror.keyName = function(event, noShift) {
    if (presto && event.keyCode == 34 && event["char"]) return false;
    var base = keyNames[event.keyCode], name = base;
    if (name == null || event.altGraphKey) return false;
    if (event.altKey && base != "Alt") name = "Alt-" + name;
    if ((flipCtrlCmd ? event.metaKey : event.ctrlKey) && base != "Ctrl") name = "Ctrl-" + name;
    if ((flipCtrlCmd ? event.ctrlKey : event.metaKey) && base != "Cmd") name = "Cmd-" + name;
    if (!noShift && event.shiftKey && base != "Shift") name = "Shift-" + name;
    return name;
  };

  function getKeyMap(val) {
    return typeof val == "string" ? keyMap[val] : val;
  }

  // FROMTEXTAREA

  CodeMirror.fromTextArea = function(textarea, options) {
    options = options ? copyObj(options) : {};
    options.value = textarea.value;
    if (!options.tabindex && textarea.tabIndex)
      options.tabindex = textarea.tabIndex;
    if (!options.placeholder && textarea.placeholder)
      options.placeholder = textarea.placeholder;
    // Set autofocus to true if this textarea is focused, or if it has
    // autofocus and no other element is focused.
    if (options.autofocus == null) {
      var hasFocus = activeElt();
      options.autofocus = hasFocus == textarea ||
        textarea.getAttribute("autofocus") != null && hasFocus == document.body;
    }

    function save() {textarea.value = cm.getValue();}
    if (textarea.form) {
      on(textarea.form, "submit", save);
      // Deplorable hack to make the submit method do the right thing.
      if (!options.leaveSubmitMethodAlone) {
        var form = textarea.form, realSubmit = form.submit;
        try {
          var wrappedSubmit = form.submit = function() {
            save();
            form.submit = realSubmit;
            form.submit();
            form.submit = wrappedSubmit;
          };
        } catch(e) {}
      }
    }

    options.finishInit = function(cm) {
      cm.save = save;
      cm.getTextArea = function() { return textarea; };
      cm.toTextArea = function() {
        cm.toTextArea = isNaN; // Prevent this from being ran twice
        save();
        textarea.parentNode.removeChild(cm.getWrapperElement());
        textarea.style.display = "";
        if (textarea.form) {
          off(textarea.form, "submit", save);
          if (typeof textarea.form.submit == "function")
            textarea.form.submit = realSubmit;
        }
      };
    };

    textarea.style.display = "none";
    var cm = CodeMirror(function(node) {
      textarea.parentNode.insertBefore(node, textarea.nextSibling);
    }, options);
    return cm;
  };

  // STRING STREAM

  // Fed to the mode parsers, provides helper functions to make
  // parsers more succinct.

  var StringStream = CodeMirror.StringStream = function(string, tabSize) {
    this.pos = this.start = 0;
    this.string = string;
    this.tabSize = tabSize || 8;
    this.lastColumnPos = this.lastColumnValue = 0;
    this.lineStart = 0;
  };

  StringStream.prototype = {
    eol: function() {return this.pos >= this.string.length;},
    sol: function() {return this.pos == this.lineStart;},
    peek: function() {return this.string.charAt(this.pos) || undefined;},
    next: function() {
      if (this.pos < this.string.length)
        return this.string.charAt(this.pos++);
    },
    eat: function(match) {
      var ch = this.string.charAt(this.pos);
      if (typeof match == "string") var ok = ch == match;
      else var ok = ch && (match.test ? match.test(ch) : match(ch));
      if (ok) {++this.pos; return ch;}
    },
    eatWhile: function(match) {
      var start = this.pos;
      while (this.eat(match)){}
      return this.pos > start;
    },
    eatSpace: function() {
      var start = this.pos;
      while (/[\s\u00a0]/.test(this.string.charAt(this.pos))) ++this.pos;
      return this.pos > start;
    },
    skipToEnd: function() {this.pos = this.string.length;},
    skipTo: function(ch) {
      var found = this.string.indexOf(ch, this.pos);
      if (found > -1) {this.pos = found; return true;}
    },
    backUp: function(n) {this.pos -= n;},
    column: function() {
      if (this.lastColumnPos < this.start) {
        this.lastColumnValue = countColumn(this.string, this.start, this.tabSize, this.lastColumnPos, this.lastColumnValue);
        this.lastColumnPos = this.start;
      }
      return this.lastColumnValue - (this.lineStart ? countColumn(this.string, this.lineStart, this.tabSize) : 0);
    },
    indentation: function() {
      return countColumn(this.string, null, this.tabSize) -
        (this.lineStart ? countColumn(this.string, this.lineStart, this.tabSize) : 0);
    },
    match: function(pattern, consume, caseInsensitive) {
      if (typeof pattern == "string") {
        var cased = function(str) {return caseInsensitive ? str.toLowerCase() : str;};
        var substr = this.string.substr(this.pos, pattern.length);
        if (cased(substr) == cased(pattern)) {
          if (consume !== false) this.pos += pattern.length;
          return true;
        }
      } else {
        var match = this.string.slice(this.pos).match(pattern);
        if (match && match.index > 0) return null;
        if (match && consume !== false) this.pos += match[0].length;
        return match;
      }
    },
    current: function(){return this.string.slice(this.start, this.pos);},
    hideFirstChars: function(n, inner) {
      this.lineStart += n;
      try { return inner(); }
      finally { this.lineStart -= n; }
    }
  };

  // TEXTMARKERS

  // Created with markText and setBookmark methods. A TextMarker is a
  // handle that can be used to clear or find a marked position in the
  // document. Line objects hold arrays (markedSpans) containing
  // {from, to, marker} object pointing to such marker objects, and
  // indicating that such a marker is present on that line. Multiple
  // lines may point to the same marker when it spans across lines.
  // The spans will have null for their from/to properties when the
  // marker continues beyond the start/end of the line. Markers have
  // links back to the lines they currently touch.

  var nextMarkerId = 0;

  var TextMarker = CodeMirror.TextMarker = function(doc, type) {
    this.lines = [];
    this.type = type;
    this.doc = doc;
    this.id = ++nextMarkerId;
  };
  eventMixin(TextMarker);

  // Clear the marker.
  TextMarker.prototype.clear = function() {
    if (this.explicitlyCleared) return;
    var cm = this.doc.cm, withOp = cm && !cm.curOp;
    if (withOp) startOperation(cm);
    if (hasHandler(this, "clear")) {
      var found = this.find();
      if (found) signalLater(this, "clear", found.from, found.to);
    }
    var min = null, max = null;
    for (var i = 0; i < this.lines.length; ++i) {
      var line = this.lines[i];
      var span = getMarkedSpanFor(line.markedSpans, this);
      if (cm && !this.collapsed) regLineChange(cm, lineNo(line), "text");
      else if (cm) {
        if (span.to != null) max = lineNo(line);
        if (span.from != null) min = lineNo(line);
      }
      line.markedSpans = removeMarkedSpan(line.markedSpans, span);
      if (span.from == null && this.collapsed && !lineIsHidden(this.doc, line) && cm)
        updateLineHeight(line, textHeight(cm.display));
    }
    if (cm && this.collapsed && !cm.options.lineWrapping) for (var i = 0; i < this.lines.length; ++i) {
      var visual = visualLine(this.lines[i]), len = lineLength(visual);
      if (len > cm.display.maxLineLength) {
        cm.display.maxLine = visual;
        cm.display.maxLineLength = len;
        cm.display.maxLineChanged = true;
      }
    }

    if (min != null && cm && this.collapsed) regChange(cm, min, max + 1);
    this.lines.length = 0;
    this.explicitlyCleared = true;
    if (this.atomic && this.doc.cantEdit) {
      this.doc.cantEdit = false;
      if (cm) reCheckSelection(cm.doc);
    }
    if (cm) signalLater(cm, "markerCleared", cm, this);
    if (withOp) endOperation(cm);
    if (this.parent) this.parent.clear();
  };

  // Find the position of the marker in the document. Returns a {from,
  // to} object by default. Side can be passed to get a specific side
  // -- 0 (both), -1 (left), or 1 (right). When lineObj is true, the
  // Pos objects returned contain a line object, rather than a line
  // number (used to prevent looking up the same line twice).
  TextMarker.prototype.find = function(side, lineObj) {
    if (side == null && this.type == "bookmark") side = 1;
    var from, to;
    for (var i = 0; i < this.lines.length; ++i) {
      var line = this.lines[i];
      var span = getMarkedSpanFor(line.markedSpans, this);
      if (span.from != null) {
        from = Pos(lineObj ? line : lineNo(line), span.from);
        if (side == -1) return from;
      }
      if (span.to != null) {
        to = Pos(lineObj ? line : lineNo(line), span.to);
        if (side == 1) return to;
      }
    }
    return from && {from: from, to: to};
  };

  // Signals that the marker's widget changed, and surrounding layout
  // should be recomputed.
  TextMarker.prototype.changed = function() {
    var pos = this.find(-1, true), widget = this, cm = this.doc.cm;
    if (!pos || !cm) return;
    runInOp(cm, function() {
      var line = pos.line, lineN = lineNo(pos.line);
      var view = findViewForLine(cm, lineN);
      if (view) {
        clearLineMeasurementCacheFor(view);
        cm.curOp.selectionChanged = cm.curOp.forceUpdate = true;
      }
      cm.curOp.updateMaxLine = true;
      if (!lineIsHidden(widget.doc, line) && widget.height != null) {
        var oldHeight = widget.height;
        widget.height = null;
        var dHeight = widgetHeight(widget) - oldHeight;
        if (dHeight)
          updateLineHeight(line, line.height + dHeight);
      }
    });
  };

  TextMarker.prototype.attachLine = function(line) {
    if (!this.lines.length && this.doc.cm) {
      var op = this.doc.cm.curOp;
      if (!op.maybeHiddenMarkers || indexOf(op.maybeHiddenMarkers, this) == -1)
        (op.maybeUnhiddenMarkers || (op.maybeUnhiddenMarkers = [])).push(this);
    }
    this.lines.push(line);
  };
  TextMarker.prototype.detachLine = function(line) {
    this.lines.splice(indexOf(this.lines, line), 1);
    if (!this.lines.length && this.doc.cm) {
      var op = this.doc.cm.curOp;
      (op.maybeHiddenMarkers || (op.maybeHiddenMarkers = [])).push(this);
    }
  };

  // Collapsed markers have unique ids, in order to be able to order
  // them, which is needed for uniquely determining an outer marker
  // when they overlap (they may nest, but not partially overlap).
  var nextMarkerId = 0;

  // Create a marker, wire it up to the right lines, and
  function markText(doc, from, to, options, type) {
    // Shared markers (across linked documents) are handled separately
    // (markTextShared will call out to this again, once per
    // document).
    if (options && options.shared) return markTextShared(doc, from, to, options, type);
    // Ensure we are in an operation.
    if (doc.cm && !doc.cm.curOp) return operation(doc.cm, markText)(doc, from, to, options, type);

    var marker = new TextMarker(doc, type), diff = cmp(from, to);
    if (options) copyObj(options, marker, false);
    // Don't connect empty markers unless clearWhenEmpty is false
    if (diff > 0 || diff == 0 && marker.clearWhenEmpty !== false)
      return marker;
    if (marker.replacedWith) {
      // Showing up as a widget implies collapsed (widget replaces text)
      marker.collapsed = true;
      marker.widgetNode = elt("span", [marker.replacedWith], "CodeMirror-widget");
      if (!options.handleMouseEvents) marker.widgetNode.setAttribute("cm-ignore-events", "true");
      if (options.insertLeft) marker.widgetNode.insertLeft = true;
    }
    if (marker.collapsed) {
      if (conflictingCollapsedRange(doc, from.line, from, to, marker) ||
          from.line != to.line && conflictingCollapsedRange(doc, to.line, from, to, marker))
        throw new Error("Inserting collapsed marker partially overlapping an existing one");
      sawCollapsedSpans = true;
    }

    if (marker.addToHistory)
      addChangeToHistory(doc, {from: from, to: to, origin: "markText"}, doc.sel, NaN);

    var curLine = from.line, cm = doc.cm, updateMaxLine;
    doc.iter(curLine, to.line + 1, function(line) {
      if (cm && marker.collapsed && !cm.options.lineWrapping && visualLine(line) == cm.display.maxLine)
        updateMaxLine = true;
      if (marker.collapsed && curLine != from.line) updateLineHeight(line, 0);
      addMarkedSpan(line, new MarkedSpan(marker,
                                         curLine == from.line ? from.ch : null,
                                         curLine == to.line ? to.ch : null));
      ++curLine;
    });
    // lineIsHidden depends on the presence of the spans, so needs a second pass
    if (marker.collapsed) doc.iter(from.line, to.line + 1, function(line) {
      if (lineIsHidden(doc, line)) updateLineHeight(line, 0);
    });

    if (marker.clearOnEnter) on(marker, "beforeCursorEnter", function() { marker.clear(); });

    if (marker.readOnly) {
      sawReadOnlySpans = true;
      if (doc.history.done.length || doc.history.undone.length)
        doc.clearHistory();
    }
    if (marker.collapsed) {
      marker.id = ++nextMarkerId;
      marker.atomic = true;
    }
    if (cm) {
      // Sync editor state
      if (updateMaxLine) cm.curOp.updateMaxLine = true;
      if (marker.collapsed)
        regChange(cm, from.line, to.line + 1);
      else if (marker.className || marker.title || marker.startStyle || marker.endStyle || marker.css)
        for (var i = from.line; i <= to.line; i++) regLineChange(cm, i, "text");
      if (marker.atomic) reCheckSelection(cm.doc);
      signalLater(cm, "markerAdded", cm, marker);
    }
    return marker;
  }

  // SHARED TEXTMARKERS

  // A shared marker spans multiple linked documents. It is
  // implemented as a meta-marker-object controlling multiple normal
  // markers.
  var SharedTextMarker = CodeMirror.SharedTextMarker = function(markers, primary) {
    this.markers = markers;
    this.primary = primary;
    for (var i = 0; i < markers.length; ++i)
      markers[i].parent = this;
  };
  eventMixin(SharedTextMarker);

  SharedTextMarker.prototype.clear = function() {
    if (this.explicitlyCleared) return;
    this.explicitlyCleared = true;
    for (var i = 0; i < this.markers.length; ++i)
      this.markers[i].clear();
    signalLater(this, "clear");
  };
  SharedTextMarker.prototype.find = function(side, lineObj) {
    return this.primary.find(side, lineObj);
  };

  function markTextShared(doc, from, to, options, type) {
    options = copyObj(options);
    options.shared = false;
    var markers = [markText(doc, from, to, options, type)], primary = markers[0];
    var widget = options.widgetNode;
    linkedDocs(doc, function(doc) {
      if (widget) options.widgetNode = widget.cloneNode(true);
      markers.push(markText(doc, clipPos(doc, from), clipPos(doc, to), options, type));
      for (var i = 0; i < doc.linked.length; ++i)
        if (doc.linked[i].isParent) return;
      primary = lst(markers);
    });
    return new SharedTextMarker(markers, primary);
  }

  function findSharedMarkers(doc) {
    return doc.findMarks(Pos(doc.first, 0), doc.clipPos(Pos(doc.lastLine())),
                         function(m) { return m.parent; });
  }

  function copySharedMarkers(doc, markers) {
    for (var i = 0; i < markers.length; i++) {
      var marker = markers[i], pos = marker.find();
      var mFrom = doc.clipPos(pos.from), mTo = doc.clipPos(pos.to);
      if (cmp(mFrom, mTo)) {
        var subMark = markText(doc, mFrom, mTo, marker.primary, marker.primary.type);
        marker.markers.push(subMark);
        subMark.parent = marker;
      }
    }
  }

  function detachSharedMarkers(markers) {
    for (var i = 0; i < markers.length; i++) {
      var marker = markers[i], linked = [marker.primary.doc];;
      linkedDocs(marker.primary.doc, function(d) { linked.push(d); });
      for (var j = 0; j < marker.markers.length; j++) {
        var subMarker = marker.markers[j];
        if (indexOf(linked, subMarker.doc) == -1) {
          subMarker.parent = null;
          marker.markers.splice(j--, 1);
        }
      }
    }
  }

  // TEXTMARKER SPANS

  function MarkedSpan(marker, from, to) {
    this.marker = marker;
    this.from = from; this.to = to;
  }

  // Search an array of spans for a span matching the given marker.
  function getMarkedSpanFor(spans, marker) {
    if (spans) for (var i = 0; i < spans.length; ++i) {
      var span = spans[i];
      if (span.marker == marker) return span;
    }
  }
  // Remove a span from an array, returning undefined if no spans are
  // left (we don't store arrays for lines without spans).
  function removeMarkedSpan(spans, span) {
    for (var r, i = 0; i < spans.length; ++i)
      if (spans[i] != span) (r || (r = [])).push(spans[i]);
    return r;
  }
  // Add a span to a line.
  function addMarkedSpan(line, span) {
    line.markedSpans = line.markedSpans ? line.markedSpans.concat([span]) : [span];
    span.marker.attachLine(line);
  }

  // Used for the algorithm that adjusts markers for a change in the
  // document. These functions cut an array of spans at a given
  // character position, returning an array of remaining chunks (or
  // undefined if nothing remains).
  function markedSpansBefore(old, startCh, isInsert) {
    if (old) for (var i = 0, nw; i < old.length; ++i) {
      var span = old[i], marker = span.marker;
      var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= startCh : span.from < startCh);
      if (startsBefore || span.from == startCh && marker.type == "bookmark" && (!isInsert || !span.marker.insertLeft)) {
        var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= startCh : span.to > startCh);
        (nw || (nw = [])).push(new MarkedSpan(marker, span.from, endsAfter ? null : span.to));
      }
    }
    return nw;
  }
  function markedSpansAfter(old, endCh, isInsert) {
    if (old) for (var i = 0, nw; i < old.length; ++i) {
      var span = old[i], marker = span.marker;
      var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= endCh : span.to > endCh);
      if (endsAfter || span.from == endCh && marker.type == "bookmark" && (!isInsert || span.marker.insertLeft)) {
        var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= endCh : span.from < endCh);
        (nw || (nw = [])).push(new MarkedSpan(marker, startsBefore ? null : span.from - endCh,
                                              span.to == null ? null : span.to - endCh));
      }
    }
    return nw;
  }

  // Given a change object, compute the new set of marker spans that
  // cover the line in which the change took place. Removes spans
  // entirely within the change, reconnects spans belonging to the
  // same marker that appear on both sides of the change, and cuts off
  // spans partially within the change. Returns an array of span
  // arrays with one element for each line in (after) the change.
  function stretchSpansOverChange(doc, change) {
    if (change.full) return null;
    var oldFirst = isLine(doc, change.from.line) && getLine(doc, change.from.line).markedSpans;
    var oldLast = isLine(doc, change.to.line) && getLine(doc, change.to.line).markedSpans;
    if (!oldFirst && !oldLast) return null;

    var startCh = change.from.ch, endCh = change.to.ch, isInsert = cmp(change.from, change.to) == 0;
    // Get the spans that 'stick out' on both sides
    var first = markedSpansBefore(oldFirst, startCh, isInsert);
    var last = markedSpansAfter(oldLast, endCh, isInsert);

    // Next, merge those two ends
    var sameLine = change.text.length == 1, offset = lst(change.text).length + (sameLine ? startCh : 0);
    if (first) {
      // Fix up .to properties of first
      for (var i = 0; i < first.length; ++i) {
        var span = first[i];
        if (span.to == null) {
          var found = getMarkedSpanFor(last, span.marker);
          if (!found) span.to = startCh;
          else if (sameLine) span.to = found.to == null ? null : found.to + offset;
        }
      }
    }
    if (last) {
      // Fix up .from in last (or move them into first in case of sameLine)
      for (var i = 0; i < last.length; ++i) {
        var span = last[i];
        if (span.to != null) span.to += offset;
        if (span.from == null) {
          var found = getMarkedSpanFor(first, span.marker);
          if (!found) {
            span.from = offset;
            if (sameLine) (first || (first = [])).push(span);
          }
        } else {
          span.from += offset;
          if (sameLine) (first || (first = [])).push(span);
        }
      }
    }
    // Make sure we didn't create any zero-length spans
    if (first) first = clearEmptySpans(first);
    if (last && last != first) last = clearEmptySpans(last);

    var newMarkers = [first];
    if (!sameLine) {
      // Fill gap with whole-line-spans
      var gap = change.text.length - 2, gapMarkers;
      if (gap > 0 && first)
        for (var i = 0; i < first.length; ++i)
          if (first[i].to == null)
            (gapMarkers || (gapMarkers = [])).push(new MarkedSpan(first[i].marker, null, null));
      for (var i = 0; i < gap; ++i)
        newMarkers.push(gapMarkers);
      newMarkers.push(last);
    }
    return newMarkers;
  }

  // Remove spans that are empty and don't have a clearWhenEmpty
  // option of false.
  function clearEmptySpans(spans) {
    for (var i = 0; i < spans.length; ++i) {
      var span = spans[i];
      if (span.from != null && span.from == span.to && span.marker.clearWhenEmpty !== false)
        spans.splice(i--, 1);
    }
    if (!spans.length) return null;
    return spans;
  }

  // Used for un/re-doing changes from the history. Combines the
  // result of computing the existing spans with the set of spans that
  // existed in the history (so that deleting around a span and then
  // undoing brings back the span).
  function mergeOldSpans(doc, change) {
    var old = getOldSpans(doc, change);
    var stretched = stretchSpansOverChange(doc, change);
    if (!old) return stretched;
    if (!stretched) return old;

    for (var i = 0; i < old.length; ++i) {
      var oldCur = old[i], stretchCur = stretched[i];
      if (oldCur && stretchCur) {
        spans: for (var j = 0; j < stretchCur.length; ++j) {
          var span = stretchCur[j];
          for (var k = 0; k < oldCur.length; ++k)
            if (oldCur[k].marker == span.marker) continue spans;
          oldCur.push(span);
        }
      } else if (stretchCur) {
        old[i] = stretchCur;
      }
    }
    return old;
  }

  // Used to 'clip' out readOnly ranges when making a change.
  function removeReadOnlyRanges(doc, from, to) {
    var markers = null;
    doc.iter(from.line, to.line + 1, function(line) {
      if (line.markedSpans) for (var i = 0; i < line.markedSpans.length; ++i) {
        var mark = line.markedSpans[i].marker;
        if (mark.readOnly && (!markers || indexOf(markers, mark) == -1))
          (markers || (markers = [])).push(mark);
      }
    });
    if (!markers) return null;
    var parts = [{from: from, to: to}];
    for (var i = 0; i < markers.length; ++i) {
      var mk = markers[i], m = mk.find(0);
      for (var j = 0; j < parts.length; ++j) {
        var p = parts[j];
        if (cmp(p.to, m.from) < 0 || cmp(p.from, m.to) > 0) continue;
        var newParts = [j, 1], dfrom = cmp(p.from, m.from), dto = cmp(p.to, m.to);
        if (dfrom < 0 || !mk.inclusiveLeft && !dfrom)
          newParts.push({from: p.from, to: m.from});
        if (dto > 0 || !mk.inclusiveRight && !dto)
          newParts.push({from: m.to, to: p.to});
        parts.splice.apply(parts, newParts);
        j += newParts.length - 1;
      }
    }
    return parts;
  }

  // Connect or disconnect spans from a line.
  function detachMarkedSpans(line) {
    var spans = line.markedSpans;
    if (!spans) return;
    for (var i = 0; i < spans.length; ++i)
      spans[i].marker.detachLine(line);
    line.markedSpans = null;
  }
  function attachMarkedSpans(line, spans) {
    if (!spans) return;
    for (var i = 0; i < spans.length; ++i)
      spans[i].marker.attachLine(line);
    line.markedSpans = spans;
  }

  // Helpers used when computing which overlapping collapsed span
  // counts as the larger one.
  function extraLeft(marker) { return marker.inclusiveLeft ? -1 : 0; }
  function extraRight(marker) { return marker.inclusiveRight ? 1 : 0; }

  // Returns a number indicating which of two overlapping collapsed
  // spans is larger (and thus includes the other). Falls back to
  // comparing ids when the spans cover exactly the same range.
  function compareCollapsedMarkers(a, b) {
    var lenDiff = a.lines.length - b.lines.length;
    if (lenDiff != 0) return lenDiff;
    var aPos = a.find(), bPos = b.find();
    var fromCmp = cmp(aPos.from, bPos.from) || extraLeft(a) - extraLeft(b);
    if (fromCmp) return -fromCmp;
    var toCmp = cmp(aPos.to, bPos.to) || extraRight(a) - extraRight(b);
    if (toCmp) return toCmp;
    return b.id - a.id;
  }

  // Find out whether a line ends or starts in a collapsed span. If
  // so, return the marker for that span.
  function collapsedSpanAtSide(line, start) {
    var sps = sawCollapsedSpans && line.markedSpans, found;
    if (sps) for (var sp, i = 0; i < sps.length; ++i) {
      sp = sps[i];
      if (sp.marker.collapsed && (start ? sp.from : sp.to) == null &&
          (!found || compareCollapsedMarkers(found, sp.marker) < 0))
        found = sp.marker;
    }
    return found;
  }
  function collapsedSpanAtStart(line) { return collapsedSpanAtSide(line, true); }
  function collapsedSpanAtEnd(line) { return collapsedSpanAtSide(line, false); }

  // Test whether there exists a collapsed span that partially
  // overlaps (covers the start or end, but not both) of a new span.
  // Such overlap is not allowed.
  function conflictingCollapsedRange(doc, lineNo, from, to, marker) {
    var line = getLine(doc, lineNo);
    var sps = sawCollapsedSpans && line.markedSpans;
    if (sps) for (var i = 0; i < sps.length; ++i) {
      var sp = sps[i];
      if (!sp.marker.collapsed) continue;
      var found = sp.marker.find(0);
      var fromCmp = cmp(found.from, from) || extraLeft(sp.marker) - extraLeft(marker);
      var toCmp = cmp(found.to, to) || extraRight(sp.marker) - extraRight(marker);
      if (fromCmp >= 0 && toCmp <= 0 || fromCmp <= 0 && toCmp >= 0) continue;
      if (fromCmp <= 0 && (cmp(found.to, from) > 0 || (sp.marker.inclusiveRight && marker.inclusiveLeft)) ||
          fromCmp >= 0 && (cmp(found.from, to) < 0 || (sp.marker.inclusiveLeft && marker.inclusiveRight)))
        return true;
    }
  }

  // A visual line is a line as drawn on the screen. Folding, for
  // example, can cause multiple logical lines to appear on the same
  // visual line. This finds the start of the visual line that the
  // given line is part of (usually that is the line itself).
  function visualLine(line) {
    var merged;
    while (merged = collapsedSpanAtStart(line))
      line = merged.find(-1, true).line;
    return line;
  }

  // Returns an array of logical lines that continue the visual line
  // started by the argument, or undefined if there are no such lines.
  function visualLineContinued(line) {
    var merged, lines;
    while (merged = collapsedSpanAtEnd(line)) {
      line = merged.find(1, true).line;
      (lines || (lines = [])).push(line);
    }
    return lines;
  }

  // Get the line number of the start of the visual line that the
  // given line number is part of.
  function visualLineNo(doc, lineN) {
    var line = getLine(doc, lineN), vis = visualLine(line);
    if (line == vis) return lineN;
    return lineNo(vis);
  }
  // Get the line number of the start of the next visual line after
  // the given line.
  function visualLineEndNo(doc, lineN) {
    if (lineN > doc.lastLine()) return lineN;
    var line = getLine(doc, lineN), merged;
    if (!lineIsHidden(doc, line)) return lineN;
    while (merged = collapsedSpanAtEnd(line))
      line = merged.find(1, true).line;
    return lineNo(line) + 1;
  }

  // Compute whether a line is hidden. Lines count as hidden when they
  // are part of a visual line that starts with another line, or when
  // they are entirely covered by collapsed, non-widget span.
  function lineIsHidden(doc, line) {
    var sps = sawCollapsedSpans && line.markedSpans;
    if (sps) for (var sp, i = 0; i < sps.length; ++i) {
      sp = sps[i];
      if (!sp.marker.collapsed) continue;
      if (sp.from == null) return true;
      if (sp.marker.widgetNode) continue;
      if (sp.from == 0 && sp.marker.inclusiveLeft && lineIsHiddenInner(doc, line, sp))
        return true;
    }
  }
  function lineIsHiddenInner(doc, line, span) {
    if (span.to == null) {
      var end = span.marker.find(1, true);
      return lineIsHiddenInner(doc, end.line, getMarkedSpanFor(end.line.markedSpans, span.marker));
    }
    if (span.marker.inclusiveRight && span.to == line.text.length)
      return true;
    for (var sp, i = 0; i < line.markedSpans.length; ++i) {
      sp = line.markedSpans[i];
      if (sp.marker.collapsed && !sp.marker.widgetNode && sp.from == span.to &&
          (sp.to == null || sp.to != span.from) &&
          (sp.marker.inclusiveLeft || span.marker.inclusiveRight) &&
          lineIsHiddenInner(doc, line, sp)) return true;
    }
  }

  // LINE WIDGETS

  // Line widgets are block elements displayed above or below a line.

  var LineWidget = CodeMirror.LineWidget = function(doc, node, options) {
    if (options) for (var opt in options) if (options.hasOwnProperty(opt))
      this[opt] = options[opt];
    this.doc = doc;
    this.node = node;
  };
  eventMixin(LineWidget);

  function adjustScrollWhenAboveVisible(cm, line, diff) {
    if (heightAtLine(line) < ((cm.curOp && cm.curOp.scrollTop) || cm.doc.scrollTop))
      addToScrollPos(cm, null, diff);
  }

  LineWidget.prototype.clear = function() {
    var cm = this.doc.cm, ws = this.line.widgets, line = this.line, no = lineNo(line);
    if (no == null || !ws) return;
    for (var i = 0; i < ws.length; ++i) if (ws[i] == this) ws.splice(i--, 1);
    if (!ws.length) line.widgets = null;
    var height = widgetHeight(this);
    updateLineHeight(line, Math.max(0, line.height - height));
    if (cm) runInOp(cm, function() {
      adjustScrollWhenAboveVisible(cm, line, -height);
      regLineChange(cm, no, "widget");
    });
  };
  LineWidget.prototype.changed = function() {
    var oldH = this.height, cm = this.doc.cm, line = this.line;
    this.height = null;
    var diff = widgetHeight(this) - oldH;
    if (!diff) return;
    updateLineHeight(line, line.height + diff);
    if (cm) runInOp(cm, function() {
      cm.curOp.forceUpdate = true;
      adjustScrollWhenAboveVisible(cm, line, diff);
    });
  };

  function widgetHeight(widget) {
    if (widget.height != null) return widget.height;
    var cm = widget.doc.cm;
    if (!cm) return 0;
    if (!contains(document.body, widget.node)) {
      var parentStyle = "position: relative;";
      if (widget.coverGutter)
        parentStyle += "margin-left: -" + cm.display.gutters.offsetWidth + "px;";
      if (widget.noHScroll)
        parentStyle += "width: " + cm.display.wrapper.clientWidth + "px;";
      removeChildrenAndAdd(cm.display.measure, elt("div", [widget.node], null, parentStyle));
    }
    return widget.height = widget.node.offsetHeight;
  }

  function addLineWidget(doc, handle, node, options) {
    var widget = new LineWidget(doc, node, options);
    var cm = doc.cm;
    if (cm && widget.noHScroll) cm.display.alignWidgets = true;
    changeLine(doc, handle, "widget", function(line) {
      var widgets = line.widgets || (line.widgets = []);
      if (widget.insertAt == null) widgets.push(widget);
      else widgets.splice(Math.min(widgets.length - 1, Math.max(0, widget.insertAt)), 0, widget);
      widget.line = line;
      if (cm && !lineIsHidden(doc, line)) {
        var aboveVisible = heightAtLine(line) < doc.scrollTop;
        updateLineHeight(line, line.height + widgetHeight(widget));
        if (aboveVisible) addToScrollPos(cm, null, widget.height);
        cm.curOp.forceUpdate = true;
      }
      return true;
    });
    return widget;
  }

  // LINE DATA STRUCTURE

  // Line objects. These hold state related to a line, including
  // highlighting info (the styles array).
  var Line = CodeMirror.Line = function(text, markedSpans, estimateHeight) {
    this.text = text;
    attachMarkedSpans(this, markedSpans);
    this.height = estimateHeight ? estimateHeight(this) : 1;
  };
  eventMixin(Line);
  Line.prototype.lineNo = function() { return lineNo(this); };

  // Change the content (text, markers) of a line. Automatically
  // invalidates cached information and tries to re-estimate the
  // line's height.
  function updateLine(line, text, markedSpans, estimateHeight) {
    line.text = text;
    if (line.stateAfter) line.stateAfter = null;
    if (line.styles) line.styles = null;
    if (line.order != null) line.order = null;
    detachMarkedSpans(line);
    attachMarkedSpans(line, markedSpans);
    var estHeight = estimateHeight ? estimateHeight(line) : 1;
    if (estHeight != line.height) updateLineHeight(line, estHeight);
  }

  // Detach a line from the document tree and its markers.
  function cleanUpLine(line) {
    line.parent = null;
    detachMarkedSpans(line);
  }

  function extractLineClasses(type, output) {
    if (type) for (;;) {
      var lineClass = type.match(/(?:^|\s+)line-(background-)?(\S+)/);
      if (!lineClass) break;
      type = type.slice(0, lineClass.index) + type.slice(lineClass.index + lineClass[0].length);
      var prop = lineClass[1] ? "bgClass" : "textClass";
      if (output[prop] == null)
        output[prop] = lineClass[2];
      else if (!(new RegExp("(?:^|\s)" + lineClass[2] + "(?:$|\s)")).test(output[prop]))
        output[prop] += " " + lineClass[2];
    }
    return type;
  }

  function callBlankLine(mode, state) {
    if (mode.blankLine) return mode.blankLine(state);
    if (!mode.innerMode) return;
    var inner = CodeMirror.innerMode(mode, state);
    if (inner.mode.blankLine) return inner.mode.blankLine(inner.state);
  }

  function readToken(mode, stream, state, inner) {
    for (var i = 0; i < 10; i++) {
      if (inner) inner[0] = CodeMirror.innerMode(mode, state).mode;
      var style = mode.token(stream, state);
      if (stream.pos > stream.start) return style;
    }
    throw new Error("Mode " + mode.name + " failed to advance stream.");
  }

  // Utility for getTokenAt and getLineTokens
  function takeToken(cm, pos, precise, asArray) {
    function getObj(copy) {
      return {start: stream.start, end: stream.pos,
              string: stream.current(),
              type: style || null,
              state: copy ? copyState(doc.mode, state) : state};
    }

    var doc = cm.doc, mode = doc.mode, style;
    pos = clipPos(doc, pos);
    var line = getLine(doc, pos.line), state = getStateBefore(cm, pos.line, precise);
    var stream = new StringStream(line.text, cm.options.tabSize), tokens;
    if (asArray) tokens = [];
    while ((asArray || stream.pos < pos.ch) && !stream.eol()) {
      stream.start = stream.pos;
      style = readToken(mode, stream, state);
      if (asArray) tokens.push(getObj(true));
    }
    return asArray ? tokens : getObj();
  }

  // Run the given mode's parser over a line, calling f for each token.
  function runMode(cm, text, mode, state, f, lineClasses, forceToEnd) {
    var flattenSpans = mode.flattenSpans;
    if (flattenSpans == null) flattenSpans = cm.options.flattenSpans;
    var curStart = 0, curStyle = null;
    var stream = new StringStream(text, cm.options.tabSize), style;
    var inner = cm.options.addModeClass && [null];
    if (text == "") extractLineClasses(callBlankLine(mode, state), lineClasses);
    while (!stream.eol()) {
      if (stream.pos > cm.options.maxHighlightLength) {
        flattenSpans = false;
        if (forceToEnd) processLine(cm, text, state, stream.pos);
        stream.pos = text.length;
        style = null;
      } else {
        style = extractLineClasses(readToken(mode, stream, state, inner), lineClasses);
      }
      if (inner) {
        var mName = inner[0].name;
        if (mName) style = "m-" + (style ? mName + " " + style : mName);
      }
      if (!flattenSpans || curStyle != style) {
        while (curStart < stream.start) {
          curStart = Math.min(stream.start, curStart + 50000);
          f(curStart, curStyle);
        }
        curStyle = style;
      }
      stream.start = stream.pos;
    }
    while (curStart < stream.pos) {
      // Webkit seems to refuse to render text nodes longer than 57444 characters
      var pos = Math.min(stream.pos, curStart + 50000);
      f(pos, curStyle);
      curStart = pos;
    }
  }

  // Compute a style array (an array starting with a mode generation
  // -- for invalidation -- followed by pairs of end positions and
  // style strings), which is used to highlight the tokens on the
  // line.
  function highlightLine(cm, line, state, forceToEnd) {
    // A styles array always starts with a number identifying the
    // mode/overlays that it is based on (for easy invalidation).
    var st = [cm.state.modeGen], lineClasses = {};
    // Compute the base array of styles
    runMode(cm, line.text, cm.doc.mode, state, function(end, style) {
      st.push(end, style);
    }, lineClasses, forceToEnd);

    // Run overlays, adjust style array.
    for (var o = 0; o < cm.state.overlays.length; ++o) {
      var overlay = cm.state.overlays[o], i = 1, at = 0;
      runMode(cm, line.text, overlay.mode, true, function(end, style) {
        var start = i;
        // Ensure there's a token end at the current position, and that i points at it
        while (at < end) {
          var i_end = st[i];
          if (i_end > end)
            st.splice(i, 1, end, st[i+1], i_end);
          i += 2;
          at = Math.min(end, i_end);
        }
        if (!style) return;
        if (overlay.opaque) {
          st.splice(start, i - start, end, "cm-overlay " + style);
          i = start + 2;
        } else {
          for (; start < i; start += 2) {
            var cur = st[start+1];
            st[start+1] = (cur ? cur + " " : "") + "cm-overlay " + style;
          }
        }
      }, lineClasses);
    }

    return {styles: st, classes: lineClasses.bgClass || lineClasses.textClass ? lineClasses : null};
  }

  function getLineStyles(cm, line, updateFrontier) {
    if (!line.styles || line.styles[0] != cm.state.modeGen) {
      var result = highlightLine(cm, line, line.stateAfter = getStateBefore(cm, lineNo(line)));
      line.styles = result.styles;
      if (result.classes) line.styleClasses = result.classes;
      else if (line.styleClasses) line.styleClasses = null;
      if (updateFrontier === cm.doc.frontier) cm.doc.frontier++;
    }
    return line.styles;
  }

  // Lightweight form of highlight -- proceed over this line and
  // update state, but don't save a style array. Used for lines that
  // aren't currently visible.
  function processLine(cm, text, state, startAt) {
    var mode = cm.doc.mode;
    var stream = new StringStream(text, cm.options.tabSize);
    stream.start = stream.pos = startAt || 0;
    if (text == "") callBlankLine(mode, state);
    while (!stream.eol() && stream.pos <= cm.options.maxHighlightLength) {
      readToken(mode, stream, state);
      stream.start = stream.pos;
    }
  }

  // Convert a style as returned by a mode (either null, or a string
  // containing one or more styles) to a CSS style. This is cached,
  // and also looks for line-wide styles.
  var styleToClassCache = {}, styleToClassCacheWithMode = {};
  function interpretTokenStyle(style, options) {
    if (!style || /^\s*$/.test(style)) return null;
    var cache = options.addModeClass ? styleToClassCacheWithMode : styleToClassCache;
    return cache[style] ||
      (cache[style] = style.replace(/\S+/g, "cm-$&"));
  }

  // Render the DOM representation of the text of a line. Also builds
  // up a 'line map', which points at the DOM nodes that represent
  // specific stretches of text, and is used by the measuring code.
  // The returned object contains the DOM node, this map, and
  // information about line-wide styles that were set by the mode.
  function buildLineContent(cm, lineView) {
    // The padding-right forces the element to have a 'border', which
    // is needed on Webkit to be able to get line-level bounding
    // rectangles for it (in measureChar).
    var content = elt("span", null, null, webkit ? "padding-right: .1px" : null);
    var builder = {pre: elt("pre", [content], "CodeMirror-line"), content: content,
                   col: 0, pos: 0, cm: cm,
                   splitSpaces: (ie || webkit) && cm.getOption("lineWrapping")};
    lineView.measure = {};

    // Iterate over the logical lines that make up this visual line.
    for (var i = 0; i <= (lineView.rest ? lineView.rest.length : 0); i++) {
      var line = i ? lineView.rest[i - 1] : lineView.line, order;
      builder.pos = 0;
      builder.addToken = buildToken;
      // Optionally wire in some hacks into the token-rendering
      // algorithm, to deal with browser quirks.
      if (hasBadBidiRects(cm.display.measure) && (order = getOrder(line)))
        builder.addToken = buildTokenBadBidi(builder.addToken, order);
      builder.map = [];
      var allowFrontierUpdate = lineView != cm.display.externalMeasured && lineNo(line);
      insertLineContent(line, builder, getLineStyles(cm, line, allowFrontierUpdate));
      if (line.styleClasses) {
        if (line.styleClasses.bgClass)
          builder.bgClass = joinClasses(line.styleClasses.bgClass, builder.bgClass || "");
        if (line.styleClasses.textClass)
          builder.textClass = joinClasses(line.styleClasses.textClass, builder.textClass || "");
      }

      // Ensure at least a single node is present, for measuring.
      if (builder.map.length == 0)
        builder.map.push(0, 0, builder.content.appendChild(zeroWidthElement(cm.display.measure)));

      // Store the map and a cache object for the current logical line
      if (i == 0) {
        lineView.measure.map = builder.map;
        lineView.measure.cache = {};
      } else {
        (lineView.measure.maps || (lineView.measure.maps = [])).push(builder.map);
        (lineView.measure.caches || (lineView.measure.caches = [])).push({});
      }
    }

    // See issue #2901
    if (webkit && /\bcm-tab\b/.test(builder.content.lastChild.className))
      builder.content.className = "cm-tab-wrap-hack";

    signal(cm, "renderLine", cm, lineView.line, builder.pre);
    if (builder.pre.className)
      builder.textClass = joinClasses(builder.pre.className, builder.textClass || "");

    return builder;
  }

  function defaultSpecialCharPlaceholder(ch) {
    var token = elt("span", "\u2022", "cm-invalidchar");
    token.title = "\\u" + ch.charCodeAt(0).toString(16);
    token.setAttribute("aria-label", token.title);
    return token;
  }

  // Build up the DOM representation for a single token, and add it to
  // the line map. Takes care to render special characters separately.
  function buildToken(builder, text, style, startStyle, endStyle, title, css) {
    if (!text) return;
    var displayText = builder.splitSpaces ? text.replace(/ {3,}/g, splitSpaces) : text;
    var special = builder.cm.state.specialChars, mustWrap = false;
    if (!special.test(text)) {
      builder.col += text.length;
      var content = document.createTextNode(displayText);
      builder.map.push(builder.pos, builder.pos + text.length, content);
      if (ie && ie_version < 9) mustWrap = true;
      builder.pos += text.length;
    } else {
      var content = document.createDocumentFragment(), pos = 0;
      while (true) {
        special.lastIndex = pos;
        var m = special.exec(text);
        var skipped = m ? m.index - pos : text.length - pos;
        if (skipped) {
          var txt = document.createTextNode(displayText.slice(pos, pos + skipped));
          if (ie && ie_version < 9) content.appendChild(elt("span", [txt]));
          else content.appendChild(txt);
          builder.map.push(builder.pos, builder.pos + skipped, txt);
          builder.col += skipped;
          builder.pos += skipped;
        }
        if (!m) break;
        pos += skipped + 1;
        if (m[0] == "\t") {
          var tabSize = builder.cm.options.tabSize, tabWidth = tabSize - builder.col % tabSize;
          var txt = content.appendChild(elt("span", spaceStr(tabWidth), "cm-tab"));
          txt.setAttribute("role", "presentation");
          txt.setAttribute("cm-text", "\t");
          builder.col += tabWidth;
        } else {
          var txt = builder.cm.options.specialCharPlaceholder(m[0]);
          txt.setAttribute("cm-text", m[0]);
          if (ie && ie_version < 9) content.appendChild(elt("span", [txt]));
          else content.appendChild(txt);
          builder.col += 1;
        }
        builder.map.push(builder.pos, builder.pos + 1, txt);
        builder.pos++;
      }
    }
    if (style || startStyle || endStyle || mustWrap || css) {
      var fullStyle = style || "";
      if (startStyle) fullStyle += startStyle;
      if (endStyle) fullStyle += endStyle;
      var token = elt("span", [content], fullStyle, css);
      if (title) token.title = title;
      return builder.content.appendChild(token);
    }
    builder.content.appendChild(content);
  }

  function splitSpaces(old) {
    var out = " ";
    for (var i = 0; i < old.length - 2; ++i) out += i % 2 ? " " : "\u00a0";
    out += " ";
    return out;
  }

  // Work around nonsense dimensions being reported for stretches of
  // right-to-left text.
  function buildTokenBadBidi(inner, order) {
    return function(builder, text, style, startStyle, endStyle, title, css) {
      style = style ? style + " cm-force-border" : "cm-force-border";
      var start = builder.pos, end = start + text.length;
      for (;;) {
        // Find the part that overlaps with the start of this text
        for (var i = 0; i < order.length; i++) {
          var part = order[i];
          if (part.to > start && part.from <= start) break;
        }
        if (part.to >= end) return inner(builder, text, style, startStyle, endStyle, title, css);
        inner(builder, text.slice(0, part.to - start), style, startStyle, null, title, css);
        startStyle = null;
        text = text.slice(part.to - start);
        start = part.to;
      }
    };
  }

  function buildCollapsedSpan(builder, size, marker, ignoreWidget) {
    var widget = !ignoreWidget && marker.widgetNode;
    if (widget) builder.map.push(builder.pos, builder.pos + size, widget);
    if (!ignoreWidget && builder.cm.display.input.needsContentAttribute) {
      if (!widget)
        widget = builder.content.appendChild(document.createElement("span"));
      widget.setAttribute("cm-marker", marker.id);
    }
    if (widget) {
      builder.cm.display.input.setUneditable(widget);
      builder.content.appendChild(widget);
    }
    builder.pos += size;
  }

  // Outputs a number of spans to make up a line, taking highlighting
  // and marked text into account.
  function insertLineContent(line, builder, styles) {
    var spans = line.markedSpans, allText = line.text, at = 0;
    if (!spans) {
      for (var i = 1; i < styles.length; i+=2)
        builder.addToken(builder, allText.slice(at, at = styles[i]), interpretTokenStyle(styles[i+1], builder.cm.options));
      return;
    }

    var len = allText.length, pos = 0, i = 1, text = "", style, css;
    var nextChange = 0, spanStyle, spanEndStyle, spanStartStyle, title, collapsed;
    for (;;) {
      if (nextChange == pos) { // Update current marker set
        spanStyle = spanEndStyle = spanStartStyle = title = css = "";
        collapsed = null; nextChange = Infinity;
        var foundBookmarks = [];
        for (var j = 0; j < spans.length; ++j) {
          var sp = spans[j], m = sp.marker;
          if (m.type == "bookmark" && sp.from == pos && m.widgetNode) {
            foundBookmarks.push(m);
          } else if (sp.from <= pos && (sp.to == null || sp.to > pos || m.collapsed && sp.to == pos && sp.from == pos)) {
            if (sp.to != null && sp.to != pos && nextChange > sp.to) {
              nextChange = sp.to;
              spanEndStyle = "";
            }
            if (m.className) spanStyle += " " + m.className;
            if (m.css) css = m.css;
            if (m.startStyle && sp.from == pos) spanStartStyle += " " + m.startStyle;
            if (m.endStyle && sp.to == nextChange) spanEndStyle += " " + m.endStyle;
            if (m.title && !title) title = m.title;
            if (m.collapsed && (!collapsed || compareCollapsedMarkers(collapsed.marker, m) < 0))
              collapsed = sp;
          } else if (sp.from > pos && nextChange > sp.from) {
            nextChange = sp.from;
          }
        }
        if (collapsed && (collapsed.from || 0) == pos) {
          buildCollapsedSpan(builder, (collapsed.to == null ? len + 1 : collapsed.to) - pos,
                             collapsed.marker, collapsed.from == null);
          if (collapsed.to == null) return;
          if (collapsed.to == pos) collapsed = false;
        }
        if (!collapsed && foundBookmarks.length) for (var j = 0; j < foundBookmarks.length; ++j)
          buildCollapsedSpan(builder, 0, foundBookmarks[j]);
      }
      if (pos >= len) break;

      var upto = Math.min(len, nextChange);
      while (true) {
        if (text) {
          var end = pos + text.length;
          if (!collapsed) {
            var tokenText = end > upto ? text.slice(0, upto - pos) : text;
            builder.addToken(builder, tokenText, style ? style + spanStyle : spanStyle,
                             spanStartStyle, pos + tokenText.length == nextChange ? spanEndStyle : "", title, css);
          }
          if (end >= upto) {text = text.slice(upto - pos); pos = upto; break;}
          pos = end;
          spanStartStyle = "";
        }
        text = allText.slice(at, at = styles[i++]);
        style = interpretTokenStyle(styles[i++], builder.cm.options);
      }
    }
  }

  // DOCUMENT DATA STRUCTURE

  // By default, updates that start and end at the beginning of a line
  // are treated specially, in order to make the association of line
  // widgets and marker elements with the text behave more intuitive.
  function isWholeLineUpdate(doc, change) {
    return change.from.ch == 0 && change.to.ch == 0 && lst(change.text) == "" &&
      (!doc.cm || doc.cm.options.wholeLineUpdateBefore);
  }

  // Perform a change on the document data structure.
  function updateDoc(doc, change, markedSpans, estimateHeight) {
    function spansFor(n) {return markedSpans ? markedSpans[n] : null;}
    function update(line, text, spans) {
      updateLine(line, text, spans, estimateHeight);
      signalLater(line, "change", line, change);
    }
    function linesFor(start, end) {
      for (var i = start, result = []; i < end; ++i)
        result.push(new Line(text[i], spansFor(i), estimateHeight));
      return result;
    }

    var from = change.from, to = change.to, text = change.text;
    var firstLine = getLine(doc, from.line), lastLine = getLine(doc, to.line);
    var lastText = lst(text), lastSpans = spansFor(text.length - 1), nlines = to.line - from.line;

    // Adjust the line structure
    if (change.full) {
      doc.insert(0, linesFor(0, text.length));
      doc.remove(text.length, doc.size - text.length);
    } else if (isWholeLineUpdate(doc, change)) {
      // This is a whole-line replace. Treated specially to make
      // sure line objects move the way they are supposed to.
      var added = linesFor(0, text.length - 1);
      update(lastLine, lastLine.text, lastSpans);
      if (nlines) doc.remove(from.line, nlines);
      if (added.length) doc.insert(from.line, added);
    } else if (firstLine == lastLine) {
      if (text.length == 1) {
        update(firstLine, firstLine.text.slice(0, from.ch) + lastText + firstLine.text.slice(to.ch), lastSpans);
      } else {
        var added = linesFor(1, text.length - 1);
        added.push(new Line(lastText + firstLine.text.slice(to.ch), lastSpans, estimateHeight));
        update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0));
        doc.insert(from.line + 1, added);
      }
    } else if (text.length == 1) {
      update(firstLine, firstLine.text.slice(0, from.ch) + text[0] + lastLine.text.slice(to.ch), spansFor(0));
      doc.remove(from.line + 1, nlines);
    } else {
      update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0));
      update(lastLine, lastText + lastLine.text.slice(to.ch), lastSpans);
      var added = linesFor(1, text.length - 1);
      if (nlines > 1) doc.remove(from.line + 1, nlines - 1);
      doc.insert(from.line + 1, added);
    }

    signalLater(doc, "change", doc, change);
  }

  // The document is represented as a BTree consisting of leaves, with
  // chunk of lines in them, and branches, with up to ten leaves or
  // other branch nodes below them. The top node is always a branch
  // node, and is the document object itself (meaning it has
  // additional methods and properties).
  //
  // All nodes have parent links. The tree is used both to go from
  // line numbers to line objects, and to go from objects to numbers.
  // It also indexes by height, and is used to convert between height
  // and line object, and to find the total height of the document.
  //
  // See also http://marijnhaverbeke.nl/blog/codemirror-line-tree.html

  function LeafChunk(lines) {
    this.lines = lines;
    this.parent = null;
    for (var i = 0, height = 0; i < lines.length; ++i) {
      lines[i].parent = this;
      height += lines[i].height;
    }
    this.height = height;
  }

  LeafChunk.prototype = {
    chunkSize: function() { return this.lines.length; },
    // Remove the n lines at offset 'at'.
    removeInner: function(at, n) {
      for (var i = at, e = at + n; i < e; ++i) {
        var line = this.lines[i];
        this.height -= line.height;
        cleanUpLine(line);
        signalLater(line, "delete");
      }
      this.lines.splice(at, n);
    },
    // Helper used to collapse a small branch into a single leaf.
    collapse: function(lines) {
      lines.push.apply(lines, this.lines);
    },
    // Insert the given array of lines at offset 'at', count them as
    // having the given height.
    insertInner: function(at, lines, height) {
      this.height += height;
      this.lines = this.lines.slice(0, at).concat(lines).concat(this.lines.slice(at));
      for (var i = 0; i < lines.length; ++i) lines[i].parent = this;
    },
    // Used to iterate over a part of the tree.
    iterN: function(at, n, op) {
      for (var e = at + n; at < e; ++at)
        if (op(this.lines[at])) return true;
    }
  };

  function BranchChunk(children) {
    this.children = children;
    var size = 0, height = 0;
    for (var i = 0; i < children.length; ++i) {
      var ch = children[i];
      size += ch.chunkSize(); height += ch.height;
      ch.parent = this;
    }
    this.size = size;
    this.height = height;
    this.parent = null;
  }

  BranchChunk.prototype = {
    chunkSize: function() { return this.size; },
    removeInner: function(at, n) {
      this.size -= n;
      for (var i = 0; i < this.children.length; ++i) {
        var child = this.children[i], sz = child.chunkSize();
        if (at < sz) {
          var rm = Math.min(n, sz - at), oldHeight = child.height;
          child.removeInner(at, rm);
          this.height -= oldHeight - child.height;
          if (sz == rm) { this.children.splice(i--, 1); child.parent = null; }
          if ((n -= rm) == 0) break;
          at = 0;
        } else at -= sz;
      }
      // If the result is smaller than 25 lines, ensure that it is a
      // single leaf node.
      if (this.size - n < 25 &&
          (this.children.length > 1 || !(this.children[0] instanceof LeafChunk))) {
        var lines = [];
        this.collapse(lines);
        this.children = [new LeafChunk(lines)];
        this.children[0].parent = this;
      }
    },
    collapse: function(lines) {
      for (var i = 0; i < this.children.length; ++i) this.children[i].collapse(lines);
    },
    insertInner: function(at, lines, height) {
      this.size += lines.length;
      this.height += height;
      for (var i = 0; i < this.children.length; ++i) {
        var child = this.children[i], sz = child.chunkSize();
        if (at <= sz) {
          child.insertInner(at, lines, height);
          if (child.lines && child.lines.length > 50) {
            while (child.lines.length > 50) {
              var spilled = child.lines.splice(child.lines.length - 25, 25);
              var newleaf = new LeafChunk(spilled);
              child.height -= newleaf.height;
              this.children.splice(i + 1, 0, newleaf);
              newleaf.parent = this;
            }
            this.maybeSpill();
          }
          break;
        }
        at -= sz;
      }
    },
    // When a node has grown, check whether it should be split.
    maybeSpill: function() {
      if (this.children.length <= 10) return;
      var me = this;
      do {
        var spilled = me.children.splice(me.children.length - 5, 5);
        var sibling = new BranchChunk(spilled);
        if (!me.parent) { // Become the parent node
          var copy = new BranchChunk(me.children);
          copy.parent = me;
          me.children = [copy, sibling];
          me = copy;
        } else {
          me.size -= sibling.size;
          me.height -= sibling.height;
          var myIndex = indexOf(me.parent.children, me);
          me.parent.children.splice(myIndex + 1, 0, sibling);
        }
        sibling.parent = me.parent;
      } while (me.children.length > 10);
      me.parent.maybeSpill();
    },
    iterN: function(at, n, op) {
      for (var i = 0; i < this.children.length; ++i) {
        var child = this.children[i], sz = child.chunkSize();
        if (at < sz) {
          var used = Math.min(n, sz - at);
          if (child.iterN(at, used, op)) return true;
          if ((n -= used) == 0) break;
          at = 0;
        } else at -= sz;
      }
    }
  };

  var nextDocId = 0;
  var Doc = CodeMirror.Doc = function(text, mode, firstLine) {
    if (!(this instanceof Doc)) return new Doc(text, mode, firstLine);
    if (firstLine == null) firstLine = 0;

    BranchChunk.call(this, [new LeafChunk([new Line("", null)])]);
    this.first = firstLine;
    this.scrollTop = this.scrollLeft = 0;
    this.cantEdit = false;
    this.cleanGeneration = 1;
    this.frontier = firstLine;
    var start = Pos(firstLine, 0);
    this.sel = simpleSelection(start);
    this.history = new History(null);
    this.id = ++nextDocId;
    this.modeOption = mode;

    if (typeof text == "string") text = splitLines(text);
    updateDoc(this, {from: start, to: start, text: text});
    setSelection(this, simpleSelection(start), sel_dontScroll);
  };

  Doc.prototype = createObj(BranchChunk.prototype, {
    constructor: Doc,
    // Iterate over the document. Supports two forms -- with only one
    // argument, it calls that for each line in the document. With
    // three, it iterates over the range given by the first two (with
    // the second being non-inclusive).
    iter: function(from, to, op) {
      if (op) this.iterN(from - this.first, to - from, op);
      else this.iterN(this.first, this.first + this.size, from);
    },

    // Non-public interface for adding and removing lines.
    insert: function(at, lines) {
      var height = 0;
      for (var i = 0; i < lines.length; ++i) height += lines[i].height;
      this.insertInner(at - this.first, lines, height);
    },
    remove: function(at, n) { this.removeInner(at - this.first, n); },

    // From here, the methods are part of the public interface. Most
    // are also available from CodeMirror (editor) instances.

    getValue: function(lineSep, lineFilter) {
      var lines = getLines(this, this.first, this.first + this.size, lineFilter);
      if (lineSep === false) return lines;
      return lines.join(lineSep || "\n");
    },
    setValue: docMethodOp(function(code) {
      var top = Pos(this.first, 0), last = this.first + this.size - 1;
      makeChange(this, {from: top, to: Pos(last, getLine(this, last).text.length),
                        text: splitLines(code), origin: "setValue", full: true}, true);
      setSelection(this, simpleSelection(top));
    }),
    replaceRange: function(code, from, to, origin) {
      from = clipPos(this, from);
      to = to ? clipPos(this, to) : from;
      replaceRange(this, code, from, to, origin);
    },
    getRange: function(from, to, lineSep) {
      var lines = getBetween(this, clipPos(this, from), clipPos(this, to));
      if (lineSep === false) return lines;
      return lines.join(lineSep || "\n");
    },

    getLine: function(line) {var l = this.getLineHandle(line); return l && l.text;},

    getLineHandle: function(line) {if (isLine(this, line)) return getLine(this, line);},
    getLineNumber: function(line) {return lineNo(line);},

    getLineHandleVisualStart: function(line) {
      if (typeof line == "number") line = getLine(this, line);
      return visualLine(line);
    },

    lineCount: function() {return this.size;},
    firstLine: function() {return this.first;},
    lastLine: function() {return this.first + this.size - 1;},

    clipPos: function(pos) {return clipPos(this, pos);},

    getCursor: function(start) {
      var range = this.sel.primary(), pos;
      if (start == null || start == "head") pos = range.head;
      else if (start == "anchor") pos = range.anchor;
      else if (start == "end" || start == "to" || start === false) pos = range.to();
      else pos = range.from();
      return pos;
    },
    listSelections: function() { return this.sel.ranges; },
    somethingSelected: function() {return this.sel.somethingSelected();},

    setCursor: docMethodOp(function(line, ch, options) {
      setSimpleSelection(this, clipPos(this, typeof line == "number" ? Pos(line, ch || 0) : line), null, options);
    }),
    setSelection: docMethodOp(function(anchor, head, options) {
      setSimpleSelection(this, clipPos(this, anchor), clipPos(this, head || anchor), options);
    }),
    extendSelection: docMethodOp(function(head, other, options) {
      extendSelection(this, clipPos(this, head), other && clipPos(this, other), options);
    }),
    extendSelections: docMethodOp(function(heads, options) {
      extendSelections(this, clipPosArray(this, heads, options));
    }),
    extendSelectionsBy: docMethodOp(function(f, options) {
      extendSelections(this, map(this.sel.ranges, f), options);
    }),
    setSelections: docMethodOp(function(ranges, primary, options) {
      if (!ranges.length) return;
      for (var i = 0, out = []; i < ranges.length; i++)
        out[i] = new Range(clipPos(this, ranges[i].anchor),
                           clipPos(this, ranges[i].head));
      if (primary == null) primary = Math.min(ranges.length - 1, this.sel.primIndex);
      setSelection(this, normalizeSelection(out, primary), options);
    }),
    addSelection: docMethodOp(function(anchor, head, options) {
      var ranges = this.sel.ranges.slice(0);
      ranges.push(new Range(clipPos(this, anchor), clipPos(this, head || anchor)));
      setSelection(this, normalizeSelection(ranges, ranges.length - 1), options);
    }),

    getSelection: function(lineSep) {
      var ranges = this.sel.ranges, lines;
      for (var i = 0; i < ranges.length; i++) {
        var sel = getBetween(this, ranges[i].from(), ranges[i].to());
        lines = lines ? lines.concat(sel) : sel;
      }
      if (lineSep === false) return lines;
      else return lines.join(lineSep || "\n");
    },
    getSelections: function(lineSep) {
      var parts = [], ranges = this.sel.ranges;
      for (var i = 0; i < ranges.length; i++) {
        var sel = getBetween(this, ranges[i].from(), ranges[i].to());
        if (lineSep !== false) sel = sel.join(lineSep || "\n");
        parts[i] = sel;
      }
      return parts;
    },
    replaceSelection: function(code, collapse, origin) {
      var dup = [];
      for (var i = 0; i < this.sel.ranges.length; i++)
        dup[i] = code;
      this.replaceSelections(dup, collapse, origin || "+input");
    },
    replaceSelections: docMethodOp(function(code, collapse, origin) {
      var changes = [], sel = this.sel;
      for (var i = 0; i < sel.ranges.length; i++) {
        var range = sel.ranges[i];
        changes[i] = {from: range.from(), to: range.to(), text: splitLines(code[i]), origin: origin};
      }
      var newSel = collapse && collapse != "end" && computeReplacedSel(this, changes, collapse);
      for (var i = changes.length - 1; i >= 0; i--)
        makeChange(this, changes[i]);
      if (newSel) setSelectionReplaceHistory(this, newSel);
      else if (this.cm) ensureCursorVisible(this.cm);
    }),
    undo: docMethodOp(function() {makeChangeFromHistory(this, "undo");}),
    redo: docMethodOp(function() {makeChangeFromHistory(this, "redo");}),
    undoSelection: docMethodOp(function() {makeChangeFromHistory(this, "undo", true);}),
    redoSelection: docMethodOp(function() {makeChangeFromHistory(this, "redo", true);}),

    setExtending: function(val) {this.extend = val;},
    getExtending: function() {return this.extend;},

    historySize: function() {
      var hist = this.history, done = 0, undone = 0;
      for (var i = 0; i < hist.done.length; i++) if (!hist.done[i].ranges) ++done;
      for (var i = 0; i < hist.undone.length; i++) if (!hist.undone[i].ranges) ++undone;
      return {undo: done, redo: undone};
    },
    clearHistory: function() {this.history = new History(this.history.maxGeneration);},

    markClean: function() {
      this.cleanGeneration = this.changeGeneration(true);
    },
    changeGeneration: function(forceSplit) {
      if (forceSplit)
        this.history.lastOp = this.history.lastSelOp = this.history.lastOrigin = null;
      return this.history.generation;
    },
    isClean: function (gen) {
      return this.history.generation == (gen || this.cleanGeneration);
    },

    getHistory: function() {
      return {done: copyHistoryArray(this.history.done),
              undone: copyHistoryArray(this.history.undone)};
    },
    setHistory: function(histData) {
      var hist = this.history = new History(this.history.maxGeneration);
      hist.done = copyHistoryArray(histData.done.slice(0), null, true);
      hist.undone = copyHistoryArray(histData.undone.slice(0), null, true);
    },

    addLineClass: docMethodOp(function(handle, where, cls) {
      return changeLine(this, handle, where == "gutter" ? "gutter" : "class", function(line) {
        var prop = where == "text" ? "textClass"
                 : where == "background" ? "bgClass"
                 : where == "gutter" ? "gutterClass" : "wrapClass";
        if (!line[prop]) line[prop] = cls;
        else if (classTest(cls).test(line[prop])) return false;
        else line[prop] += " " + cls;
        return true;
      });
    }),
    removeLineClass: docMethodOp(function(handle, where, cls) {
      return changeLine(this, handle, where == "gutter" ? "gutter" : "class", function(line) {
        var prop = where == "text" ? "textClass"
                 : where == "background" ? "bgClass"
                 : where == "gutter" ? "gutterClass" : "wrapClass";
        var cur = line[prop];
        if (!cur) return false;
        else if (cls == null) line[prop] = null;
        else {
          var found = cur.match(classTest(cls));
          if (!found) return false;
          var end = found.index + found[0].length;
          line[prop] = cur.slice(0, found.index) + (!found.index || end == cur.length ? "" : " ") + cur.slice(end) || null;
        }
        return true;
      });
    }),

    addLineWidget: docMethodOp(function(handle, node, options) {
      return addLineWidget(this, handle, node, options);
    }),
    removeLineWidget: function(widget) { widget.clear(); },

    markText: function(from, to, options) {
      return markText(this, clipPos(this, from), clipPos(this, to), options, "range");
    },
    setBookmark: function(pos, options) {
      var realOpts = {replacedWith: options && (options.nodeType == null ? options.widget : options),
                      insertLeft: options && options.insertLeft,
                      clearWhenEmpty: false, shared: options && options.shared,
                      handleMouseEvents: options && options.handleMouseEvents};
      pos = clipPos(this, pos);
      return markText(this, pos, pos, realOpts, "bookmark");
    },
    findMarksAt: function(pos) {
      pos = clipPos(this, pos);
      var markers = [], spans = getLine(this, pos.line).markedSpans;
      if (spans) for (var i = 0; i < spans.length; ++i) {
        var span = spans[i];
        if ((span.from == null || span.from <= pos.ch) &&
            (span.to == null || span.to >= pos.ch))
          markers.push(span.marker.parent || span.marker);
      }
      return markers;
    },
    findMarks: function(from, to, filter) {
      from = clipPos(this, from); to = clipPos(this, to);
      var found = [], lineNo = from.line;
      this.iter(from.line, to.line + 1, function(line) {
        var spans = line.markedSpans;
        if (spans) for (var i = 0; i < spans.length; i++) {
          var span = spans[i];
          if (!(lineNo == from.line && from.ch > span.to ||
                span.from == null && lineNo != from.line||
                lineNo == to.line && span.from > to.ch) &&
              (!filter || filter(span.marker)))
            found.push(span.marker.parent || span.marker);
        }
        ++lineNo;
      });
      return found;
    },
    getAllMarks: function() {
      var markers = [];
      this.iter(function(line) {
        var sps = line.markedSpans;
        if (sps) for (var i = 0; i < sps.length; ++i)
          if (sps[i].from != null) markers.push(sps[i].marker);
      });
      return markers;
    },

    posFromIndex: function(off) {
      var ch, lineNo = this.first;
      this.iter(function(line) {
        var sz = line.text.length + 1;
        if (sz > off) { ch = off; return true; }
        off -= sz;
        ++lineNo;
      });
      return clipPos(this, Pos(lineNo, ch));
    },
    indexFromPos: function (coords) {
      coords = clipPos(this, coords);
      var index = coords.ch;
      if (coords.line < this.first || coords.ch < 0) return 0;
      this.iter(this.first, coords.line, function (line) {
        index += line.text.length + 1;
      });
      return index;
    },

    copy: function(copyHistory) {
      var doc = new Doc(getLines(this, this.first, this.first + this.size), this.modeOption, this.first);
      doc.scrollTop = this.scrollTop; doc.scrollLeft = this.scrollLeft;
      doc.sel = this.sel;
      doc.extend = false;
      if (copyHistory) {
        doc.history.undoDepth = this.history.undoDepth;
        doc.setHistory(this.getHistory());
      }
      return doc;
    },

    linkedDoc: function(options) {
      if (!options) options = {};
      var from = this.first, to = this.first + this.size;
      if (options.from != null && options.from > from) from = options.from;
      if (options.to != null && options.to < to) to = options.to;
      var copy = new Doc(getLines(this, from, to), options.mode || this.modeOption, from);
      if (options.sharedHist) copy.history = this.history;
      (this.linked || (this.linked = [])).push({doc: copy, sharedHist: options.sharedHist});
      copy.linked = [{doc: this, isParent: true, sharedHist: options.sharedHist}];
      copySharedMarkers(copy, findSharedMarkers(this));
      return copy;
    },
    unlinkDoc: function(other) {
      if (other instanceof CodeMirror) other = other.doc;
      if (this.linked) for (var i = 0; i < this.linked.length; ++i) {
        var link = this.linked[i];
        if (link.doc != other) continue;
        this.linked.splice(i, 1);
        other.unlinkDoc(this);
        detachSharedMarkers(findSharedMarkers(this));
        break;
      }
      // If the histories were shared, split them again
      if (other.history == this.history) {
        var splitIds = [other.id];
        linkedDocs(other, function(doc) {splitIds.push(doc.id);}, true);
        other.history = new History(null);
        other.history.done = copyHistoryArray(this.history.done, splitIds);
        other.history.undone = copyHistoryArray(this.history.undone, splitIds);
      }
    },
    iterLinkedDocs: function(f) {linkedDocs(this, f);},

    getMode: function() {return this.mode;},
    getEditor: function() {return this.cm;}
  });

  // Public alias.
  Doc.prototype.eachLine = Doc.prototype.iter;

  // Set up methods on CodeMirror's prototype to redirect to the editor's document.
  var dontDelegate = "iter insert remove copy getEditor constructor".split(" ");
  for (var prop in Doc.prototype) if (Doc.prototype.hasOwnProperty(prop) && indexOf(dontDelegate, prop) < 0)
    CodeMirror.prototype[prop] = (function(method) {
      return function() {return method.apply(this.doc, arguments);};
    })(Doc.prototype[prop]);

  eventMixin(Doc);

  // Call f for all linked documents.
  function linkedDocs(doc, f, sharedHistOnly) {
    function propagate(doc, skip, sharedHist) {
      if (doc.linked) for (var i = 0; i < doc.linked.length; ++i) {
        var rel = doc.linked[i];
        if (rel.doc == skip) continue;
        var shared = sharedHist && rel.sharedHist;
        if (sharedHistOnly && !shared) continue;
        f(rel.doc, shared);
        propagate(rel.doc, doc, shared);
      }
    }
    propagate(doc, null, true);
  }

  // Attach a document to an editor.
  function attachDoc(cm, doc) {
    if (doc.cm) throw new Error("This document is already in use.");
    cm.doc = doc;
    doc.cm = cm;
    estimateLineHeights(cm);
    loadMode(cm);
    if (!cm.options.lineWrapping) findMaxLine(cm);
    cm.options.mode = doc.modeOption;
    regChange(cm);
  }

  // LINE UTILITIES

  // Find the line object corresponding to the given line number.
  function getLine(doc, n) {
    n -= doc.first;
    if (n < 0 || n >= doc.size) throw new Error("There is no line " + (n + doc.first) + " in the document.");
    for (var chunk = doc; !chunk.lines;) {
      for (var i = 0;; ++i) {
        var child = chunk.children[i], sz = child.chunkSize();
        if (n < sz) { chunk = child; break; }
        n -= sz;
      }
    }
    return chunk.lines[n];
  }

  // Get the part of a document between two positions, as an array of
  // strings.
  function getBetween(doc, start, end) {
    var out = [], n = start.line;
    doc.iter(start.line, end.line + 1, function(line) {
      var text = line.text;
      if (n == end.line) text = text.slice(0, end.ch);
      if (n == start.line) text = text.slice(start.ch);
      out.push(text);
      ++n;
    });
    return out;
  }
  // Get the lines between from and to, as array of strings.
  function getLines(doc, from, to, lineFilter) {
    var out = [];
    doc.iter(from, to, function(line) {
      var text = line.text;
      if(lineFilter){
        text = lineFilter(line);
      }
      out.push(text);
    });
    return out;
  }

  // Update the height of a line, propagating the height change
  // upwards to parent nodes.
  function updateLineHeight(line, height) {
    var diff = height - line.height;
    if (diff) for (var n = line; n; n = n.parent) n.height += diff;
  }

  // Given a line object, find its line number by walking up through
  // its parent links.
  function lineNo(line) {
    if (line.parent == null) return null;
    var cur = line.parent, no = indexOf(cur.lines, line);
    for (var chunk = cur.parent; chunk; cur = chunk, chunk = chunk.parent) {
      for (var i = 0;; ++i) {
        if (chunk.children[i] == cur) break;
        no += chunk.children[i].chunkSize();
      }
    }
    return no + cur.first;
  }

  // Find the line at the given vertical position, using the height
  // information in the document tree.
  function lineAtHeight(chunk, h) {
    var n = chunk.first;
    outer: do {
      for (var i = 0; i < chunk.children.length; ++i) {
        var child = chunk.children[i], ch = child.height;
        if (h < ch) { chunk = child; continue outer; }
        h -= ch;
        n += child.chunkSize();
      }
      return n;
    } while (!chunk.lines);
    for (var i = 0; i < chunk.lines.length; ++i) {
      var line = chunk.lines[i], lh = line.height;
      if (h < lh) break;
      h -= lh;
    }
    return n + i;
  }


  // Find the height above the given line.
  function heightAtLine(lineObj) {
    lineObj = visualLine(lineObj);

    var h = 0, chunk = lineObj.parent;
    for (var i = 0; i < chunk.lines.length; ++i) {
      var line = chunk.lines[i];
      if (line == lineObj) break;
      else h += line.height;
    }
    for (var p = chunk.parent; p; chunk = p, p = chunk.parent) {
      for (var i = 0; i < p.children.length; ++i) {
        var cur = p.children[i];
        if (cur == chunk) break;
        else h += cur.height;
      }
    }
    return h;
  }

  // Get the bidi ordering for the given line (and cache it). Returns
  // false for lines that are fully left-to-right, and an array of
  // BidiSpan objects otherwise.
  function getOrder(line) {
    var order = line.order;
    if (order == null) order = line.order = bidiOrdering(line.text);
    return order;
  }

  // HISTORY

  function History(startGen) {
    // Arrays of change events and selections. Doing something adds an
    // event to done and clears undo. Undoing moves events from done
    // to undone, redoing moves them in the other direction.
    this.done = []; this.undone = [];
    this.undoDepth = Infinity;
    // Used to track when changes can be merged into a single undo
    // event
    this.lastModTime = this.lastSelTime = 0;
    this.lastOp = this.lastSelOp = null;
    this.lastOrigin = this.lastSelOrigin = null;
    // Used by the isClean() method
    this.generation = this.maxGeneration = startGen || 1;
  }

  // Create a history change event from an updateDoc-style change
  // object.
  function historyChangeFromChange(doc, change) {
    var histChange = {from: copyPos(change.from), to: changeEnd(change), text: getBetween(doc, change.from, change.to)};
    attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1);
    linkedDocs(doc, function(doc) {attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1);}, true);
    return histChange;
  }

  // Pop all selection events off the end of a history array. Stop at
  // a change event.
  function clearSelectionEvents(array) {
    while (array.length) {
      var last = lst(array);
      if (last.ranges) array.pop();
      else break;
    }
  }

  // Find the top change event in the history. Pop off selection
  // events that are in the way.
  function lastChangeEvent(hist, force) {
    if (force) {
      clearSelectionEvents(hist.done);
      return lst(hist.done);
    } else if (hist.done.length && !lst(hist.done).ranges) {
      return lst(hist.done);
    } else if (hist.done.length > 1 && !hist.done[hist.done.length - 2].ranges) {
      hist.done.pop();
      return lst(hist.done);
    }
  }

  // Register a change in the history. Merges changes that are within
  // a single operation, ore are close together with an origin that
  // allows merging (starting with "+") into a single event.
  function addChangeToHistory(doc, change, selAfter, opId) {
    var hist = doc.history;
    hist.undone.length = 0;
    var time = +new Date, cur;

    if ((hist.lastOp == opId ||
         hist.lastOrigin == change.origin && change.origin &&
         ((change.origin.charAt(0) == "+" && doc.cm && hist.lastModTime > time - doc.cm.options.historyEventDelay) ||
          change.origin.charAt(0) == "*")) &&
        (cur = lastChangeEvent(hist, hist.lastOp == opId))) {
      // Merge this change into the last event
      var last = lst(cur.changes);
      if (cmp(change.from, change.to) == 0 && cmp(change.from, last.to) == 0) {
        // Optimized case for simple insertion -- don't want to add
        // new changesets for every character typed
        last.to = changeEnd(change);
      } else {
        // Add new sub-event
        cur.changes.push(historyChangeFromChange(doc, change));
      }
    } else {
      // Can not be merged, start a new event.
      var before = lst(hist.done);
      if (!before || !before.ranges)
        pushSelectionToHistory(doc.sel, hist.done);
      cur = {changes: [historyChangeFromChange(doc, change)],
             generation: hist.generation};
      hist.done.push(cur);
      while (hist.done.length > hist.undoDepth) {
        hist.done.shift();
        if (!hist.done[0].ranges) hist.done.shift();
      }
    }
    hist.done.push(selAfter);
    hist.generation = ++hist.maxGeneration;
    hist.lastModTime = hist.lastSelTime = time;
    hist.lastOp = hist.lastSelOp = opId;
    hist.lastOrigin = hist.lastSelOrigin = change.origin;

    if (!last) signal(doc, "historyAdded");
  }

  function selectionEventCanBeMerged(doc, origin, prev, sel) {
    var ch = origin.charAt(0);
    return ch == "*" ||
      ch == "+" &&
      prev.ranges.length == sel.ranges.length &&
      prev.somethingSelected() == sel.somethingSelected() &&
      new Date - doc.history.lastSelTime <= (doc.cm ? doc.cm.options.historyEventDelay : 500);
  }

  // Called whenever the selection changes, sets the new selection as
  // the pending selection in the history, and pushes the old pending
  // selection into the 'done' array when it was significantly
  // different (in number of selected ranges, emptiness, or time).
  function addSelectionToHistory(doc, sel, opId, options) {
    var hist = doc.history, origin = options && options.origin;

    // A new event is started when the previous origin does not match
    // the current, or the origins don't allow matching. Origins
    // starting with * are always merged, those starting with + are
    // merged when similar and close together in time.
    if (opId == hist.lastSelOp ||
        (origin && hist.lastSelOrigin == origin &&
         (hist.lastModTime == hist.lastSelTime && hist.lastOrigin == origin ||
          selectionEventCanBeMerged(doc, origin, lst(hist.done), sel))))
      hist.done[hist.done.length - 1] = sel;
    else
      pushSelectionToHistory(sel, hist.done);

    hist.lastSelTime = +new Date;
    hist.lastSelOrigin = origin;
    hist.lastSelOp = opId;
    if (options && options.clearRedo !== false)
      clearSelectionEvents(hist.undone);
  }

  function pushSelectionToHistory(sel, dest) {
    var top = lst(dest);
    if (!(top && top.ranges && top.equals(sel)))
      dest.push(sel);
  }

  // Used to store marked span information in the history.
  function attachLocalSpans(doc, change, from, to) {
    var existing = change["spans_" + doc.id], n = 0;
    doc.iter(Math.max(doc.first, from), Math.min(doc.first + doc.size, to), function(line) {
      if (line.markedSpans)
        (existing || (existing = change["spans_" + doc.id] = {}))[n] = line.markedSpans;
      ++n;
    });
  }

  // When un/re-doing restores text containing marked spans, those
  // that have been explicitly cleared should not be restored.
  function removeClearedSpans(spans) {
    if (!spans) return null;
    for (var i = 0, out; i < spans.length; ++i) {
      if (spans[i].marker.explicitlyCleared) { if (!out) out = spans.slice(0, i); }
      else if (out) out.push(spans[i]);
    }
    return !out ? spans : out.length ? out : null;
  }

  // Retrieve and filter the old marked spans stored in a change event.
  function getOldSpans(doc, change) {
    var found = change["spans_" + doc.id];
    if (!found) return null;
    for (var i = 0, nw = []; i < change.text.length; ++i)
      nw.push(removeClearedSpans(found[i]));
    return nw;
  }

  // Used both to provide a JSON-safe object in .getHistory, and, when
  // detaching a document, to split the history in two
  function copyHistoryArray(events, newGroup, instantiateSel) {
    for (var i = 0, copy = []; i < events.length; ++i) {
      var event = events[i];
      if (event.ranges) {
        copy.push(instantiateSel ? Selection.prototype.deepCopy.call(event) : event);
        continue;
      }
      var changes = event.changes, newChanges = [];
      copy.push({changes: newChanges});
      for (var j = 0; j < changes.length; ++j) {
        var change = changes[j], m;
        newChanges.push({from: change.from, to: change.to, text: change.text});
        if (newGroup) for (var prop in change) if (m = prop.match(/^spans_(\d+)$/)) {
          if (indexOf(newGroup, Number(m[1])) > -1) {
            lst(newChanges)[prop] = change[prop];
            delete change[prop];
          }
        }
      }
    }
    return copy;
  }

  // Rebasing/resetting history to deal with externally-sourced changes

  function rebaseHistSelSingle(pos, from, to, diff) {
    if (to < pos.line) {
      pos.line += diff;
    } else if (from < pos.line) {
      pos.line = from;
      pos.ch = 0;
    }
  }

  // Tries to rebase an array of history events given a change in the
  // document. If the change touches the same lines as the event, the
  // event, and everything 'behind' it, is discarded. If the change is
  // before the event, the event's positions are updated. Uses a
  // copy-on-write scheme for the positions, to avoid having to
  // reallocate them all on every rebase, but also avoid problems with
  // shared position objects being unsafely updated.
  function rebaseHistArray(array, from, to, diff) {
    for (var i = 0; i < array.length; ++i) {
      var sub = array[i], ok = true;
      if (sub.ranges) {
        if (!sub.copied) { sub = array[i] = sub.deepCopy(); sub.copied = true; }
        for (var j = 0; j < sub.ranges.length; j++) {
          rebaseHistSelSingle(sub.ranges[j].anchor, from, to, diff);
          rebaseHistSelSingle(sub.ranges[j].head, from, to, diff);
        }
        continue;
      }
      for (var j = 0; j < sub.changes.length; ++j) {
        var cur = sub.changes[j];
        if (to < cur.from.line) {
          cur.from = Pos(cur.from.line + diff, cur.from.ch);
          cur.to = Pos(cur.to.line + diff, cur.to.ch);
        } else if (from <= cur.to.line) {
          ok = false;
          break;
        }
      }
      if (!ok) {
        array.splice(0, i + 1);
        i = 0;
      }
    }
  }

  function rebaseHist(hist, change) {
    var from = change.from.line, to = change.to.line, diff = change.text.length - (to - from) - 1;
    rebaseHistArray(hist.done, from, to, diff);
    rebaseHistArray(hist.undone, from, to, diff);
  }

  // EVENT UTILITIES

  // Due to the fact that we still support jurassic IE versions, some
  // compatibility wrappers are needed.

  var e_preventDefault = CodeMirror.e_preventDefault = function(e) {
    if (e.preventDefault) e.preventDefault();
    else e.returnValue = false;
  };
  var e_stopPropagation = CodeMirror.e_stopPropagation = function(e) {
    if (e.stopPropagation) e.stopPropagation();
    else e.cancelBubble = true;
  };
  function e_defaultPrevented(e) {
    return e.defaultPrevented != null ? e.defaultPrevented : e.returnValue == false;
  }
  var e_stop = CodeMirror.e_stop = function(e) {e_preventDefault(e); e_stopPropagation(e);};

  function e_target(e) {return e.target || e.srcElement;}
  function e_button(e) {
    var b = e.which;
    if (b == null) {
      if (e.button & 1) b = 1;
      else if (e.button & 2) b = 3;
      else if (e.button & 4) b = 2;
    }
    if (mac && e.ctrlKey && b == 1) b = 3;
    return b;
  }

  // EVENT HANDLING

  // Lightweight event framework. on/off also work on DOM nodes,
  // registering native DOM handlers.

  var on = CodeMirror.on = function(emitter, type, f) {
    if (emitter.addEventListener)
      emitter.addEventListener(type, f, false);
    else if (emitter.attachEvent)
      emitter.attachEvent("on" + type, f);
    else {
      var map = emitter._handlers || (emitter._handlers = {});
      var arr = map[type] || (map[type] = []);
      arr.push(f);
    }
  };

  var off = CodeMirror.off = function(emitter, type, f) {
    if (emitter.removeEventListener)
      emitter.removeEventListener(type, f, false);
    else if (emitter.detachEvent)
      emitter.detachEvent("on" + type, f);
    else {
      var arr = emitter._handlers && emitter._handlers[type];
      if (!arr) return;
      for (var i = 0; i < arr.length; ++i)
        if (arr[i] == f) { arr.splice(i, 1); break; }
    }
  };

  var signal = CodeMirror.signal = function(emitter, type /*, values...*/) {
    var arr = emitter._handlers && emitter._handlers[type];
    if (!arr) return;
    var args = Array.prototype.slice.call(arguments, 2);
    for (var i = 0; i < arr.length; ++i) arr[i].apply(null, args);
  };

  var orphanDelayedCallbacks = null;

  // Often, we want to signal events at a point where we are in the
  // middle of some work, but don't want the handler to start calling
  // other methods on the editor, which might be in an inconsistent
  // state or simply not expect any other events to happen.
  // signalLater looks whether there are any handlers, and schedules
  // them to be executed when the last operation ends, or, if no
  // operation is active, when a timeout fires.
  function signalLater(emitter, type /*, values...*/) {
    var arr = emitter._handlers && emitter._handlers[type];
    if (!arr) return;
    var args = Array.prototype.slice.call(arguments, 2), list;
    if (operationGroup) {
      list = operationGroup.delayedCallbacks;
    } else if (orphanDelayedCallbacks) {
      list = orphanDelayedCallbacks;
    } else {
      list = orphanDelayedCallbacks = [];
      setTimeout(fireOrphanDelayed, 0);
    }
    function bnd(f) {return function(){f.apply(null, args);};};
    for (var i = 0; i < arr.length; ++i)
      list.push(bnd(arr[i]));
  }

  function fireOrphanDelayed() {
    var delayed = orphanDelayedCallbacks;
    orphanDelayedCallbacks = null;
    for (var i = 0; i < delayed.length; ++i) delayed[i]();
  }

  // The DOM events that CodeMirror handles can be overridden by
  // registering a (non-DOM) handler on the editor for the event name,
  // and preventDefault-ing the event in that handler.
  function signalDOMEvent(cm, e, override) {
    if (typeof e == "string")
      e = {type: e, preventDefault: function() { this.defaultPrevented = true; }};
    signal(cm, override || e.type, cm, e);
    return e_defaultPrevented(e) || e.codemirrorIgnore;
  }

  function signalCursorActivity(cm) {
    var arr = cm._handlers && cm._handlers.cursorActivity;
    if (!arr) return;
    var set = cm.curOp.cursorActivityHandlers || (cm.curOp.cursorActivityHandlers = []);
    for (var i = 0; i < arr.length; ++i) if (indexOf(set, arr[i]) == -1)
      set.push(arr[i]);
  }

  function hasHandler(emitter, type) {
    var arr = emitter._handlers && emitter._handlers[type];
    return arr && arr.length > 0;
  }

  // Add on and off methods to a constructor's prototype, to make
  // registering events on such objects more convenient.
  function eventMixin(ctor) {
    ctor.prototype.on = function(type, f) {on(this, type, f);};
    ctor.prototype.off = function(type, f) {off(this, type, f);};
  }

  // MISC UTILITIES

  // Number of pixels added to scroller and sizer to hide scrollbar
  var scrollerGap = 30;

  // Returned or thrown by various protocols to signal 'I'm not
  // handling this'.
  var Pass = CodeMirror.Pass = {toString: function(){return "CodeMirror.Pass";}};

  // Reused option objects for setSelection & friends
  var sel_dontScroll = {scroll: false}, sel_mouse = {origin: "*mouse"}, sel_move = {origin: "+move"};

  function Delayed() {this.id = null;}
  Delayed.prototype.set = function(ms, f) {
    clearTimeout(this.id);
    this.id = setTimeout(f, ms);
  };

  // Counts the column offset in a string, taking tabs into account.
  // Used mostly to find indentation.
  var countColumn = CodeMirror.countColumn = function(string, end, tabSize, startIndex, startValue) {
    if (end == null) {
      end = string.search(/[^\s\u00a0]/);
      if (end == -1) end = string.length;
    }
    for (var i = startIndex || 0, n = startValue || 0;;) {
      var nextTab = string.indexOf("\t", i);
      if (nextTab < 0 || nextTab >= end)
        return n + (end - i);
      n += nextTab - i;
      n += tabSize - (n % tabSize);
      i = nextTab + 1;
    }
  };

  // The inverse of countColumn -- find the offset that corresponds to
  // a particular column.
  function findColumn(string, goal, tabSize) {
    for (var pos = 0, col = 0;;) {
      var nextTab = string.indexOf("\t", pos);
      if (nextTab == -1) nextTab = string.length;
      var skipped = nextTab - pos;
      if (nextTab == string.length || col + skipped >= goal)
        return pos + Math.min(skipped, goal - col);
      col += nextTab - pos;
      col += tabSize - (col % tabSize);
      pos = nextTab + 1;
      if (col >= goal) return pos;
    }
  }

  var spaceStrs = [""];
  function spaceStr(n) {
    while (spaceStrs.length <= n)
      spaceStrs.push(lst(spaceStrs) + " ");
    return spaceStrs[n];
  }

  function lst(arr) { return arr[arr.length-1]; }

  var selectInput = function(node) { node.select(); };
  if (ios) // Mobile Safari apparently has a bug where select() is broken.
    selectInput = function(node) { node.selectionStart = 0; node.selectionEnd = node.value.length; };
  else if (ie) // Suppress mysterious IE10 errors
    selectInput = function(node) { try { node.select(); } catch(_e) {} };

  function indexOf(array, elt) {
    for (var i = 0; i < array.length; ++i)
      if (array[i] == elt) return i;
    return -1;
  }
  function map(array, f) {
    var out = [];
    for (var i = 0; i < array.length; i++) out[i] = f(array[i], i);
    return out;
  }

  function nothing() {}

  function createObj(base, props) {
    var inst;
    if (Object.create) {
      inst = Object.create(base);
    } else {
      nothing.prototype = base;
      inst = new nothing();
    }
    if (props) copyObj(props, inst);
    return inst;
  };

  function copyObj(obj, target, overwrite) {
    if (!target) target = {};
    for (var prop in obj)
      if (obj.hasOwnProperty(prop) && (overwrite !== false || !target.hasOwnProperty(prop)))
        target[prop] = obj[prop];
    return target;
  }

  function bind(f) {
    var args = Array.prototype.slice.call(arguments, 1);
    return function(){return f.apply(null, args);};
  }

  var nonASCIISingleCaseWordChar = /[\u00df\u0587\u0590-\u05f4\u0600-\u06ff\u3040-\u309f\u30a0-\u30ff\u3400-\u4db5\u4e00-\u9fcc\uac00-\ud7af]/;
  var isWordCharBasic = CodeMirror.isWordChar = function(ch) {
    return /\w/.test(ch) || ch > "\x80" &&
      (ch.toUpperCase() != ch.toLowerCase() || nonASCIISingleCaseWordChar.test(ch));
  };
  function isWordChar(ch, helper) {
    if (!helper) return isWordCharBasic(ch);
    if (helper.source.indexOf("\\w") > -1 && isWordCharBasic(ch)) return true;
    return helper.test(ch);
  }

  function isEmpty(obj) {
    for (var n in obj) if (obj.hasOwnProperty(n) && obj[n]) return false;
    return true;
  }

  // Extending unicode characters. A series of a non-extending char +
  // any number of extending chars is treated as a single unit as far
  // as editing and measuring is concerned. This is not fully correct,
  // since some scripts/font/browsers also treat other configurations
  // of code points as a group.
  var extendingChars = /[\u0300-\u036f\u0483-\u0489\u0591-\u05bd\u05bf\u05c1\u05c2\u05c4\u05c5\u05c7\u0610-\u061a\u064b-\u065e\u0670\u06d6-\u06dc\u06de-\u06e4\u06e7\u06e8\u06ea-\u06ed\u0711\u0730-\u074a\u07a6-\u07b0\u07eb-\u07f3\u0816-\u0819\u081b-\u0823\u0825-\u0827\u0829-\u082d\u0900-\u0902\u093c\u0941-\u0948\u094d\u0951-\u0955\u0962\u0963\u0981\u09bc\u09be\u09c1-\u09c4\u09cd\u09d7\u09e2\u09e3\u0a01\u0a02\u0a3c\u0a41\u0a42\u0a47\u0a48\u0a4b-\u0a4d\u0a51\u0a70\u0a71\u0a75\u0a81\u0a82\u0abc\u0ac1-\u0ac5\u0ac7\u0ac8\u0acd\u0ae2\u0ae3\u0b01\u0b3c\u0b3e\u0b3f\u0b41-\u0b44\u0b4d\u0b56\u0b57\u0b62\u0b63\u0b82\u0bbe\u0bc0\u0bcd\u0bd7\u0c3e-\u0c40\u0c46-\u0c48\u0c4a-\u0c4d\u0c55\u0c56\u0c62\u0c63\u0cbc\u0cbf\u0cc2\u0cc6\u0ccc\u0ccd\u0cd5\u0cd6\u0ce2\u0ce3\u0d3e\u0d41-\u0d44\u0d4d\u0d57\u0d62\u0d63\u0dca\u0dcf\u0dd2-\u0dd4\u0dd6\u0ddf\u0e31\u0e34-\u0e3a\u0e47-\u0e4e\u0eb1\u0eb4-\u0eb9\u0ebb\u0ebc\u0ec8-\u0ecd\u0f18\u0f19\u0f35\u0f37\u0f39\u0f71-\u0f7e\u0f80-\u0f84\u0f86\u0f87\u0f90-\u0f97\u0f99-\u0fbc\u0fc6\u102d-\u1030\u1032-\u1037\u1039\u103a\u103d\u103e\u1058\u1059\u105e-\u1060\u1071-\u1074\u1082\u1085\u1086\u108d\u109d\u135f\u1712-\u1714\u1732-\u1734\u1752\u1753\u1772\u1773\u17b7-\u17bd\u17c6\u17c9-\u17d3\u17dd\u180b-\u180d\u18a9\u1920-\u1922\u1927\u1928\u1932\u1939-\u193b\u1a17\u1a18\u1a56\u1a58-\u1a5e\u1a60\u1a62\u1a65-\u1a6c\u1a73-\u1a7c\u1a7f\u1b00-\u1b03\u1b34\u1b36-\u1b3a\u1b3c\u1b42\u1b6b-\u1b73\u1b80\u1b81\u1ba2-\u1ba5\u1ba8\u1ba9\u1c2c-\u1c33\u1c36\u1c37\u1cd0-\u1cd2\u1cd4-\u1ce0\u1ce2-\u1ce8\u1ced\u1dc0-\u1de6\u1dfd-\u1dff\u200c\u200d\u20d0-\u20f0\u2cef-\u2cf1\u2de0-\u2dff\u302a-\u302f\u3099\u309a\ua66f-\ua672\ua67c\ua67d\ua6f0\ua6f1\ua802\ua806\ua80b\ua825\ua826\ua8c4\ua8e0-\ua8f1\ua926-\ua92d\ua947-\ua951\ua980-\ua982\ua9b3\ua9b6-\ua9b9\ua9bc\uaa29-\uaa2e\uaa31\uaa32\uaa35\uaa36\uaa43\uaa4c\uaab0\uaab2-\uaab4\uaab7\uaab8\uaabe\uaabf\uaac1\uabe5\uabe8\uabed\udc00-\udfff\ufb1e\ufe00-\ufe0f\ufe20-\ufe26\uff9e\uff9f]/;
  function isExtendingChar(ch) { return ch.charCodeAt(0) >= 768 && extendingChars.test(ch); }

  // DOM UTILITIES

  function elt(tag, content, className, style) {
    var e = document.createElement(tag);
    if (className) e.className = className;
    if (style) e.style.cssText = style;
    if (typeof content == "string") e.appendChild(document.createTextNode(content));
    else if (content) for (var i = 0; i < content.length; ++i) e.appendChild(content[i]);
    return e;
  }

  var range;
  if (document.createRange) range = function(node, start, end, endNode) {
    var r = document.createRange();
    r.setEnd(endNode || node, end);
    r.setStart(node, start);
    return r;
  };
  else range = function(node, start, end) {
    var r = document.body.createTextRange();
    try { r.moveToElementText(node.parentNode); }
    catch(e) { return r; }
    r.collapse(true);
    r.moveEnd("character", end);
    r.moveStart("character", start);
    return r;
  };

  function removeChildren(e) {
    for (var count = e.childNodes.length; count > 0; --count)
      e.removeChild(e.firstChild);
    return e;
  }

  function removeChildrenAndAdd(parent, e) {
    return removeChildren(parent).appendChild(e);
  }

  var contains = CodeMirror.contains = function(parent, child) {
    if (child.nodeType == 3) // Android browser always returns false when child is a textnode
      child = child.parentNode;
    if (parent.contains)
      return parent.contains(child);
    do {
      if (child.nodeType == 11) child = child.host;
      if (child == parent) return true;
    } while (child = child.parentNode);
  };

  function activeElt() { return document.activeElement; }
  // Older versions of IE throws unspecified error when touching
  // document.activeElement in some cases (during loading, in iframe)
  if (ie && ie_version < 11) activeElt = function() {
    try { return document.activeElement; }
    catch(e) { return document.body; }
  };

  function classTest(cls) { return new RegExp("(^|\\s)" + cls + "(?:$|\\s)\\s*"); }
  var rmClass = CodeMirror.rmClass = function(node, cls) {
    var current = node.className;
    var match = classTest(cls).exec(current);
    if (match) {
      var after = current.slice(match.index + match[0].length);
      node.className = current.slice(0, match.index) + (after ? match[1] + after : "");
    }
  };
  var addClass = CodeMirror.addClass = function(node, cls) {
    var current = node.className;
    if (!classTest(cls).test(current)) node.className += (current ? " " : "") + cls;
  };
  function joinClasses(a, b) {
    var as = a.split(" ");
    for (var i = 0; i < as.length; i++)
      if (as[i] && !classTest(as[i]).test(b)) b += " " + as[i];
    return b;
  }

  // WINDOW-WIDE EVENTS

  // These must be handled carefully, because naively registering a
  // handler for each editor will cause the editors to never be
  // garbage collected.

  function forEachCodeMirror(f) {
    if (!document.body.getElementsByClassName) return;
    var byClass = document.body.getElementsByClassName("CodeMirror");
    for (var i = 0; i < byClass.length; i++) {
      var cm = byClass[i].CodeMirror;
      if (cm) f(cm);
    }
  }

  var globalsRegistered = false;
  function ensureGlobalHandlers() {
    if (globalsRegistered) return;
    registerGlobalHandlers();
    globalsRegistered = true;
  }
  function registerGlobalHandlers() {
    // When the window resizes, we need to refresh active editors.
    var resizeTimer;
    on(window, "resize", function() {
      if (resizeTimer == null) resizeTimer = setTimeout(function() {
        resizeTimer = null;
        forEachCodeMirror(onResize);
      }, 100);
    });
    // When the window loses focus, we want to show the editor as blurred
    on(window, "blur", function() {
      forEachCodeMirror(onBlur);
    });
  }

  // FEATURE DETECTION

  // Detect drag-and-drop
  var dragAndDrop = function() {
    // There is *some* kind of drag-and-drop support in IE6-8, but I
    // couldn't get it to work yet.
    if (ie && ie_version < 9) return false;
    var div = elt('div');
    return "draggable" in div || "dragDrop" in div;
  }();

  var zwspSupported;
  function zeroWidthElement(measure) {
    if (zwspSupported == null) {
      var test = elt("span", "\u200b");
      removeChildrenAndAdd(measure, elt("span", [test, document.createTextNode("x")]));
      if (measure.firstChild.offsetHeight != 0)
        zwspSupported = test.offsetWidth <= 1 && test.offsetHeight > 2 && !(ie && ie_version < 8);
    }
    var node = zwspSupported ? elt("span", "\u200b") :
      elt("span", "\u00a0", null, "display: inline-block; width: 1px; margin-right: -1px");
    node.setAttribute("cm-text", "");
    return node;
  }

  // Feature-detect IE's crummy client rect reporting for bidi text
  var badBidiRects;
  function hasBadBidiRects(measure) {
    if (badBidiRects != null) return badBidiRects;
    var txt = removeChildrenAndAdd(measure, document.createTextNode("A\u062eA"));
    var r0 = range(txt, 0, 1).getBoundingClientRect();
    if (!r0 || r0.left == r0.right) return false; // Safari returns null in some cases (#2780)
    var r1 = range(txt, 1, 2).getBoundingClientRect();
    return badBidiRects = (r1.right - r0.right < 3);
  }

  // See if "".split is the broken IE version, if so, provide an
  // alternative way to split lines.
  var splitLines = CodeMirror.splitLines = "\n\nb".split(/\n/).length != 3 ? function(string) {
    var pos = 0, result = [], l = string.length;
    while (pos <= l) {
      var nl = string.indexOf("\n", pos);
      if (nl == -1) nl = string.length;
      var line = string.slice(pos, string.charAt(nl - 1) == "\r" ? nl - 1 : nl);
      var rt = line.indexOf("\r");
      if (rt != -1) {
        result.push(line.slice(0, rt));
        pos += rt + 1;
      } else {
        result.push(line);
        pos = nl + 1;
      }
    }
    return result;
  } : function(string){return string.split(/\r\n?|\n/);};

  var hasSelection = window.getSelection ? function(te) {
    try { return te.selectionStart != te.selectionEnd; }
    catch(e) { return false; }
  } : function(te) {
    try {var range = te.ownerDocument.selection.createRange();}
    catch(e) {}
    if (!range || range.parentElement() != te) return false;
    return range.compareEndPoints("StartToEnd", range) != 0;
  };

  var hasCopyEvent = (function() {
    var e = elt("div");
    if ("oncopy" in e) return true;
    e.setAttribute("oncopy", "return;");
    return typeof e.oncopy == "function";
  })();

  var badZoomedRects = null;
  function hasBadZoomedRects(measure) {
    if (badZoomedRects != null) return badZoomedRects;
    var node = removeChildrenAndAdd(measure, elt("span", "x"));
    var normal = node.getBoundingClientRect();
    var fromRange = range(node, 0, 1).getBoundingClientRect();
    return badZoomedRects = Math.abs(normal.left - fromRange.left) > 1;
  }

  // KEY NAMES

  var keyNames = {3: "Enter", 8: "Backspace", 9: "Tab", 13: "Enter", 16: "Shift", 17: "Ctrl", 18: "Alt",
                  19: "Pause", 20: "CapsLock", 27: "Esc", 32: "Space", 33: "PageUp", 34: "PageDown", 35: "End",
                  36: "Home", 37: "Left", 38: "Up", 39: "Right", 40: "Down", 44: "PrintScrn", 45: "Insert",
                  46: "Delete", 59: ";", 61: "=", 91: "Mod", 92: "Mod", 93: "Mod", 107: "=", 109: "-", 127: "Delete",
                  173: "-", 186: ";", 187: "=", 188: ",", 189: "-", 190: ".", 191: "/", 192: "`", 219: "[", 220: "\\",
                  221: "]", 222: "'", 63232: "Up", 63233: "Down", 63234: "Left", 63235: "Right", 63272: "Delete",
                  63273: "Home", 63275: "End", 63276: "PageUp", 63277: "PageDown", 63302: "Insert"};
  CodeMirror.keyNames = keyNames;
  (function() {
    // Number keys
    for (var i = 0; i < 10; i++) keyNames[i + 48] = keyNames[i + 96] = String(i);
    // Alphabetic keys
    for (var i = 65; i <= 90; i++) keyNames[i] = String.fromCharCode(i);
    // Function keys
    for (var i = 1; i <= 12; i++) keyNames[i + 111] = keyNames[i + 63235] = "F" + i;
  })();

  // BIDI HELPERS

  function iterateBidiSections(order, from, to, f) {
    if (!order) return f(from, to, "ltr");
    var found = false;
    for (var i = 0; i < order.length; ++i) {
      var part = order[i];
      if (part.from < to && part.to > from || from == to && part.to == from) {
        f(Math.max(part.from, from), Math.min(part.to, to), part.level == 1 ? "rtl" : "ltr");
        found = true;
      }
    }
    if (!found) f(from, to, "ltr");
  }

  function bidiLeft(part) { return part.level % 2 ? part.to : part.from; }
  function bidiRight(part) { return part.level % 2 ? part.from : part.to; }

  function lineLeft(line) { var order = getOrder(line); return order ? bidiLeft(order[0]) : 0; }
  function lineRight(line) {
    var order = getOrder(line);
    if (!order) return line.text.length;
    return bidiRight(lst(order));
  }

  function lineStart(cm, lineN) {
    var line = getLine(cm.doc, lineN);
    var visual = visualLine(line);
    if (visual != line) lineN = lineNo(visual);
    var order = getOrder(visual);
    var ch = !order ? 0 : order[0].level % 2 ? lineRight(visual) : lineLeft(visual);
    return Pos(lineN, ch);
  }
  function lineEnd(cm, lineN) {
    var merged, line = getLine(cm.doc, lineN);
    while (merged = collapsedSpanAtEnd(line)) {
      line = merged.find(1, true).line;
      lineN = null;
    }
    var order = getOrder(line);
    var ch = !order ? line.text.length : order[0].level % 2 ? lineLeft(line) : lineRight(line);
    return Pos(lineN == null ? lineNo(line) : lineN, ch);
  }
  function lineStartSmart(cm, pos) {
    var start = lineStart(cm, pos.line);
    var line = getLine(cm.doc, start.line);
    var order = getOrder(line);
    if (!order || order[0].level == 0) {
      var firstNonWS = Math.max(0, line.text.search(/\S/));
      var inWS = pos.line == start.line && pos.ch <= firstNonWS && pos.ch;
      return Pos(start.line, inWS ? 0 : firstNonWS);
    }
    return start;
  }

  function compareBidiLevel(order, a, b) {
    var linedir = order[0].level;
    if (a == linedir) return true;
    if (b == linedir) return false;
    return a < b;
  }
  var bidiOther;
  function getBidiPartAt(order, pos) {
    bidiOther = null;
    for (var i = 0, found; i < order.length; ++i) {
      var cur = order[i];
      if (cur.from < pos && cur.to > pos) return i;
      if ((cur.from == pos || cur.to == pos)) {
        if (found == null) {
          found = i;
        } else if (compareBidiLevel(order, cur.level, order[found].level)) {
          if (cur.from != cur.to) bidiOther = found;
          return i;
        } else {
          if (cur.from != cur.to) bidiOther = i;
          return found;
        }
      }
    }
    return found;
  }

  function moveInLine(line, pos, dir, byUnit) {
    if (!byUnit) return pos + dir;
    do pos += dir;
    while (pos > 0 && isExtendingChar(line.text.charAt(pos)));
    return pos;
  }

  // This is needed in order to move 'visually' through bi-directional
  // text -- i.e., pressing left should make the cursor go left, even
  // when in RTL text. The tricky part is the 'jumps', where RTL and
  // LTR text touch each other. This often requires the cursor offset
  // to move more than one unit, in order to visually move one unit.
  function moveVisually(line, start, dir, byUnit) {
    var bidi = getOrder(line);
    if (!bidi) return moveLogically(line, start, dir, byUnit);
    var pos = getBidiPartAt(bidi, start), part = bidi[pos];
    var target = moveInLine(line, start, part.level % 2 ? -dir : dir, byUnit);

    for (;;) {
      if (target > part.from && target < part.to) return target;
      if (target == part.from || target == part.to) {
        if (getBidiPartAt(bidi, target) == pos) return target;
        part = bidi[pos += dir];
        return (dir > 0) == part.level % 2 ? part.to : part.from;
      } else {
        part = bidi[pos += dir];
        if (!part) return null;
        if ((dir > 0) == part.level % 2)
          target = moveInLine(line, part.to, -1, byUnit);
        else
          target = moveInLine(line, part.from, 1, byUnit);
      }
    }
  }

  function moveLogically(line, start, dir, byUnit) {
    var target = start + dir;
    if (byUnit) while (target > 0 && isExtendingChar(line.text.charAt(target))) target += dir;
    return target < 0 || target > line.text.length ? null : target;
  }

  // Bidirectional ordering algorithm
  // See http://unicode.org/reports/tr9/tr9-13.html for the algorithm
  // that this (partially) implements.

  // One-char codes used for character types:
  // L (L):   Left-to-Right
  // R (R):   Right-to-Left
  // r (AL):  Right-to-Left Arabic
  // 1 (EN):  European Number
  // + (ES):  European Number Separator
  // % (ET):  European Number Terminator
  // n (AN):  Arabic Number
  // , (CS):  Common Number Separator
  // m (NSM): Non-Spacing Mark
  // b (BN):  Boundary Neutral
  // s (B):   Paragraph Separator
  // t (S):   Segment Separator
  // w (WS):  Whitespace
  // N (ON):  Other Neutrals

  // Returns null if characters are ordered as they appear
  // (left-to-right), or an array of sections ({from, to, level}
  // objects) in the order in which they occur visually.
  var bidiOrdering = (function() {
    // Character types for codepoints 0 to 0xff
    var lowTypes = "bbbbbbbbbtstwsbbbbbbbbbbbbbbssstwNN%%%NNNNNN,N,N1111111111NNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNbbbbbbsbbbbbbbbbbbbbbbbbbbbbbbbbb,N%%%%NNNNLNNNNN%%11NLNNN1LNNNNNLLLLLLLLLLLLLLLLLLLLLLLNLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLN";
    // Character types for codepoints 0x600 to 0x6ff
    var arabicTypes = "rrrrrrrrrrrr,rNNmmmmmmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmrrrrrrrnnnnnnnnnn%nnrrrmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmmmmmmNmmmm";
    function charType(code) {
      if (code <= 0xf7) return lowTypes.charAt(code);
      else if (0x590 <= code && code <= 0x5f4) return "R";
      else if (0x600 <= code && code <= 0x6ed) return arabicTypes.charAt(code - 0x600);
      else if (0x6ee <= code && code <= 0x8ac) return "r";
      else if (0x2000 <= code && code <= 0x200b) return "w";
      else if (code == 0x200c) return "b";
      else return "L";
    }

    var bidiRE = /[\u0590-\u05f4\u0600-\u06ff\u0700-\u08ac]/;
    var isNeutral = /[stwN]/, isStrong = /[LRr]/, countsAsLeft = /[Lb1n]/, countsAsNum = /[1n]/;
    // Browsers seem to always treat the boundaries of block elements as being L.
    var outerType = "L";

    function BidiSpan(level, from, to) {
      this.level = level;
      this.from = from; this.to = to;
    }

    return function(str) {
      if (!bidiRE.test(str)) return false;
      var len = str.length, types = [];
      for (var i = 0, type; i < len; ++i)
        types.push(type = charType(str.charCodeAt(i)));

      // W1. Examine each non-spacing mark (NSM) in the level run, and
      // change the type of the NSM to the type of the previous
      // character. If the NSM is at the start of the level run, it will
      // get the type of sor.
      for (var i = 0, prev = outerType; i < len; ++i) {
        var type = types[i];
        if (type == "m") types[i] = prev;
        else prev = type;
      }

      // W2. Search backwards from each instance of a European number
      // until the first strong type (R, L, AL, or sor) is found. If an
      // AL is found, change the type of the European number to Arabic
      // number.
      // W3. Change all ALs to R.
      for (var i = 0, cur = outerType; i < len; ++i) {
        var type = types[i];
        if (type == "1" && cur == "r") types[i] = "n";
        else if (isStrong.test(type)) { cur = type; if (type == "r") types[i] = "R"; }
      }

      // W4. A single European separator between two European numbers
      // changes to a European number. A single common separator between
      // two numbers of the same type changes to that type.
      for (var i = 1, prev = types[0]; i < len - 1; ++i) {
        var type = types[i];
        if (type == "+" && prev == "1" && types[i+1] == "1") types[i] = "1";
        else if (type == "," && prev == types[i+1] &&
                 (prev == "1" || prev == "n")) types[i] = prev;
        prev = type;
      }

      // W5. A sequence of European terminators adjacent to European
      // numbers changes to all European numbers.
      // W6. Otherwise, separators and terminators change to Other
      // Neutral.
      for (var i = 0; i < len; ++i) {
        var type = types[i];
        if (type == ",") types[i] = "N";
        else if (type == "%") {
          for (var end = i + 1; end < len && types[end] == "%"; ++end) {}
          var replace = (i && types[i-1] == "!") || (end < len && types[end] == "1") ? "1" : "N";
          for (var j = i; j < end; ++j) types[j] = replace;
          i = end - 1;
        }
      }

      // W7. Search backwards from each instance of a European number
      // until the first strong type (R, L, or sor) is found. If an L is
      // found, then change the type of the European number to L.
      for (var i = 0, cur = outerType; i < len; ++i) {
        var type = types[i];
        if (cur == "L" && type == "1") types[i] = "L";
        else if (isStrong.test(type)) cur = type;
      }

      // N1. A sequence of neutrals takes the direction of the
      // surrounding strong text if the text on both sides has the same
      // direction. European and Arabic numbers act as if they were R in
      // terms of their influence on neutrals. Start-of-level-run (sor)
      // and end-of-level-run (eor) are used at level run boundaries.
      // N2. Any remaining neutrals take the embedding direction.
      for (var i = 0; i < len; ++i) {
        if (isNeutral.test(types[i])) {
          for (var end = i + 1; end < len && isNeutral.test(types[end]); ++end) {}
          var before = (i ? types[i-1] : outerType) == "L";
          var after = (end < len ? types[end] : outerType) == "L";
          var replace = before || after ? "L" : "R";
          for (var j = i; j < end; ++j) types[j] = replace;
          i = end - 1;
        }
      }

      // Here we depart from the documented algorithm, in order to avoid
      // building up an actual levels array. Since there are only three
      // levels (0, 1, 2) in an implementation that doesn't take
      // explicit embedding into account, we can build up the order on
      // the fly, without following the level-based algorithm.
      var order = [], m;
      for (var i = 0; i < len;) {
        if (countsAsLeft.test(types[i])) {
          var start = i;
          for (++i; i < len && countsAsLeft.test(types[i]); ++i) {}
          order.push(new BidiSpan(0, start, i));
        } else {
          var pos = i, at = order.length;
          for (++i; i < len && types[i] != "L"; ++i) {}
          for (var j = pos; j < i;) {
            if (countsAsNum.test(types[j])) {
              if (pos < j) order.splice(at, 0, new BidiSpan(1, pos, j));
              var nstart = j;
              for (++j; j < i && countsAsNum.test(types[j]); ++j) {}
              order.splice(at, 0, new BidiSpan(2, nstart, j));
              pos = j;
            } else ++j;
          }
          if (pos < i) order.splice(at, 0, new BidiSpan(1, pos, i));
        }
      }
      if (order[0].level == 1 && (m = str.match(/^\s+/))) {
        order[0].from = m[0].length;
        order.unshift(new BidiSpan(0, 0, m[0].length));
      }
      if (lst(order).level == 1 && (m = str.match(/\s+$/))) {
        lst(order).to -= m[0].length;
        order.push(new BidiSpan(0, len - m[0].length, len));
      }
      if (order[0].level == 2)
        order.unshift(new BidiSpan(1, order[0].to, order[0].to));
      if (order[0].level != lst(order).level)
        order.push(new BidiSpan(order[0].level, len, len));

      return order;
    };
  })();

  // THE END

  CodeMirror.version = "5.4.1";

  return CodeMirror;
});(function (mod) {
    mod(CodeMirror);
})(function (CodeMirror) {
    var Pos = CodeMirror.Pos;

    function forEach(arr, f) {
        for (var i = 0, e = arr.length; i < e; ++i) f(arr[i]);
    }

    function arrayContains(arr, item) {
        if (!Array.prototype.indexOf) {
            var i = arr.length;
            while (i--) {
                if (arr[i] === item) {
                    return true;
                }
            }
            return false;
        }
        return arr.indexOf(item) != -1;
    }

    function scriptHint(editor, keywords, getToken, options) {
        // Find the token at the cursor
        var cur = editor.getCursor(), token = getToken(editor, cur);
        if (/\b(?:string)\b/.test(token.type)) {
            return;
        }
        token.state = CodeMirror.innerMode(editor.getMode(), token.state).state;

        if (!/^[\w$_]*$/.test(token.string)) {
            token = {
                start: cur.ch, end: cur.ch, string: "", state: token.state,
                type: token.string == "." ? "property" : null
            };
        } else if (token.end > cur.ch) {
            token.end = cur.ch;
            token.string = token.string.slice(0, cur.ch - token.start);
        }

        var tprop = token;
        // If it is a property, find out what it is a property of.
        while (tprop.type == "property") {
            tprop = getToken(editor, Pos(cur.line, tprop.start));
            if (tprop.string != ".") return;
            tprop = getToken(editor, Pos(cur.line, tprop.start));
            if (!context) var context = [];
            context.push(tprop);
        }
        return {
            list: getCompletions(token, context, keywords, options),
            from: Pos(cur.line, token.start),
            to: Pos(cur.line, token.end)
        };
    }

    function getFormulaKeywords() {
        return FormulaCollections;
    }

    function formulaHint(editor, options) {
        return scriptHint(editor, getFormulaKeywords(),
            function (e, cur) {
                return e.getTokenAt(cur);
            },
            options);
    };
    CodeMirror.registerHelper("hint", "formula", formulaHint);

    function getCompletions(token, context, keywords, options) {
        var found = [], start = token.string;
        if (!start) {
            return found;
        }
        function maybeAdd(str) {
            if (str.lastIndexOf(start, 0) == 0 && !arrayContains(found, str)) {
                found.push(str);
            }
        }

        if (context && context.length) {
            context.pop();
        } else {
            forEach(keywords, maybeAdd);
        }
        return found;
    }
});(function (mod) {
    mod(CodeMirror);
})(function (CodeMirror) {
    "use strict";

    CodeMirror.defineMode('formula', function () {
        function wordObj(words) {
            var o = {};
            for (var i = 0, e = words.length; i < e; ++i) o[words[i]] = true;
            return o;
        }

        var atoms = wordObj(['false', 'true']);
        var keywords = wordObj(FormulaCollections);

        function tokenBase(stream, state) {
            if (stream.eatSpace()) {
                return null;
            }
            var ch = stream.next();

            if (ch === '"' || ch === '\'') {
                nextUntilUnescaped(stream, ch);
                return "string";
            }
            if (/[\[\],\(\)]/.test(ch)) {
                return 'bracket';
            }

            // richie：暂时不需要解析操作符号
            //if (/[+\-*\/=<>!&|]/.test(ch)) {
            //  return 'operator';
            //}
            //if (/\d|\d./.test(ch)) {
            //    stream.eatWhile(/\d|\./);
            //    if (stream.eol() || !/\w/.test(stream.peek())) {
            //        return 'number';
            //    }
            //}



            stream.eatWhile(/[\w-]/);
            var word = stream.current();
            if (atoms.hasOwnProperty(word)) {
                return "atom";
            }
            if (keywords.hasOwnProperty(word)) {
                return "keyword";
            }
            return null;
        }

        function nextUntilUnescaped(stream, end) {
            var escaped = false, next;
            while ((next = stream.next()) != null) {
                if (next === end && !escaped) {
                    return false;
                }
                escaped = !escaped && next === "\\";
            }
            return escaped;
        }

        function tokenize(stream, state) {
            return (state.tokens[0] || tokenBase)(stream, state);
        }

        return {
            startState: function () {
                return {tokens: []};
            },
            token: function (stream, state) {
                return tokenize(stream, state);
            },
            fold: "brace"
        };
    });
    CodeMirror.defineMIME("text/fx-formula", "formula");
});// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: http://codemirror.net/LICENSE

(function (mod) {
    mod(CodeMirror);
})(function (CodeMirror) {
    "use strict";

    var HINT_ELEMENT_CLASS = "CodeMirror-hint";
    var ACTIVE_HINT_ELEMENT_CLASS = "CodeMirror-hint-active";

    // This is the old interface, kept around for now to stay
    // backwards-compatible.
    CodeMirror.showHint = function (cm, getHints, options) {
        if (!getHints) return cm.showHint(options);
        if (options && options.async) getHints.async = true;
        var newOpts = {hint: getHints};
        if (options) for (var prop in options) newOpts[prop] = options[prop];
        return cm.showHint(newOpts);
    };

    CodeMirror.defineExtension("showHint", function (options) {
        // We want a single cursor position.
        if (this.listSelections().length > 1 || this.somethingSelected()) return;

        if (this.state.completionActive) this.state.completionActive.close();
        var completion = this.state.completionActive = new Completion(this, options);
        if (!completion.options.hint) return;

        CodeMirror.signal(this, "startCompletion", this);
        completion.update(true);
    });

    function Completion(cm, options) {
        this.cm = cm;
        this.options = this.buildOptions(options);
        this.widget = null;
        this.debounce = 0;
        this.tick = 0;
        this.startPos = this.cm.getCursor();
        this.startLen = this.cm.getLine(this.startPos.line).length;

        var self = this;
        cm.on("cursorActivity", this.activityFunc = function () {
            self.cursorActivity();
        });
    }

    var requestAnimationFrame = window.requestAnimationFrame || function (fn) {
            return setTimeout(fn, 1000 / 60);
        };
    var cancelAnimationFrame = window.cancelAnimationFrame || clearTimeout;

    Completion.prototype = {
        close: function () {
            if (!this.active()) return;
            this.cm.state.completionActive = null;
            this.tick = null;
            this.cm.off("cursorActivity", this.activityFunc);

            if (this.widget && this.data) CodeMirror.signal(this.data, "close");
            if (this.widget) this.widget.close();
            CodeMirror.signal(this.cm, "endCompletion", this.cm);
        },

        active: function () {
            return this.cm.state.completionActive == this;
        },

        pick: function (data, i) {
            var completion = data.list[i];
            if (completion.hint) completion.hint(this.cm, data, completion);
            else {
                this.cm.replaceRange(getText(completion), completion.from || data.from,
                    completion.to || data.to, "complete");
                var to = this.cm.getCursor();
                this.cm.markText(completion.from || data.from, to, {className: "#function", atomic: true});
                this.cm.replaceSelection("() ");
                to = this.cm.getCursor();
                to.ch = to.ch - 2;
                this.cm.setCursor(to);
                this.cm.focus();
            }
            CodeMirror.signal(data, "pick", completion);
            this.close();
        },

        cursorActivity: function () {
            if (this.debounce) {
                cancelAnimationFrame(this.debounce);
                this.debounce = 0;
            }

            var pos = this.cm.getCursor(), line = this.cm.getLine(pos.line);
            if (pos.line != this.startPos.line || line.length - pos.ch != this.startLen - this.startPos.ch ||
                pos.ch < this.startPos.ch || this.cm.somethingSelected() ||
                (pos.ch && this.options.closeCharacters.test(line.charAt(pos.ch - 1)))) {
                this.close();
            } else {
                var self = this;
                this.debounce = requestAnimationFrame(function () {
                    self.update();
                });
                if (this.widget) this.widget.disable();
            }
        },

        update: function (first) {
            if (this.tick == null) return;
            if (this.data) CodeMirror.signal(this.data, "update");
            if (!this.options.hint.async) {
                this.finishUpdate(this.options.hint(this.cm, this.options), first);
            } else {
                var myTick = ++this.tick, self = this;
                this.options.hint(this.cm, function (data) {
                    if (self.tick == myTick) self.finishUpdate(data, first);
                }, this.options);
            }
        },

        finishUpdate: function (data, first) {
            this.data = data;

            var picked = (this.widget && this.widget.picked) || (first && this.options.completeSingle);
            if (this.widget) this.widget.close();
            if (data && data.list.length) {
                if (picked && data.list.length == 1) {
                    this.pick(data, 0);
                } else {
                    this.widget = new Widget(this, data);
                    CodeMirror.signal(data, "shown");
                }
            }
        },

        buildOptions: function (options) {
            var editor = this.cm.options.hintOptions;
            var out = {};
            for (var prop in defaultOptions) out[prop] = defaultOptions[prop];
            if (editor) for (var prop in editor)
                if (editor[prop] !== undefined) out[prop] = editor[prop];
            if (options) for (var prop in options)
                if (options[prop] !== undefined) out[prop] = options[prop];
            return out;
        }
    };

    function getText(completion) {
        if (typeof completion == "string") return completion;
        else return completion.text;
    }

    function buildKeyMap(completion, handle) {
        var baseMap = {
            Up: function () {
                handle.moveFocus(-1);
            },
            Down: function () {
                handle.moveFocus(1);
            },
            PageUp: function () {
                handle.moveFocus(-handle.menuSize() + 1, true);
            },
            PageDown: function () {
                handle.moveFocus(handle.menuSize() - 1, true);
            },
            Home: function () {
                handle.setFocus(0);
            },
            End: function () {
                handle.setFocus(handle.length - 1);
            },
            Enter: handle.pick,
            Tab: handle.pick,
            Esc: handle.close
        };
        var custom = completion.options.customKeys;
        var ourMap = custom ? {} : baseMap;

        function addBinding(key, val) {
            var bound;
            if (typeof val != "string")
                bound = function (cm) {
                    return val(cm, handle);
                };
            // This mechanism is deprecated
            else if (baseMap.hasOwnProperty(val))
                bound = baseMap[val];
            else
                bound = val;
            ourMap[key] = bound;
        }

        if (custom)
            for (var key in custom) if (custom.hasOwnProperty(key))
                addBinding(key, custom[key]);
        var extra = completion.options.extraKeys;
        if (extra)
            for (var key in extra) if (extra.hasOwnProperty(key))
                addBinding(key, extra[key]);
        return ourMap;
    }

    function getHintElement(hintsElement, el) {
        while (el && el != hintsElement) {
            if (el.nodeName.toUpperCase() === "LI" && el.parentNode == hintsElement) return el;
            el = el.parentNode;
        }
    }

    function Widget(completion, data) {
        this.completion = completion;
        this.data = data;
        this.picked = false;
        var widget = this, cm = completion.cm;

        var hints = this.hints = document.createElement("ul");
        hints.className = "CodeMirror-hints";
        this.selectedHint = data.selectedHint || 0;

        var completions = data.list;
        for (var i = 0; i < completions.length; ++i) {
            var elt = hints.appendChild(document.createElement("li")), cur = completions[i];
            var className = HINT_ELEMENT_CLASS + (i != this.selectedHint ? "" : " " + ACTIVE_HINT_ELEMENT_CLASS);
            if (cur.className != null) className = cur.className + " " + className;
            elt.className = className;
            if (cur.render) cur.render(elt, data, cur);
            else elt.appendChild(document.createTextNode(cur.displayText || getText(cur)));
            elt.hintId = i;
        }

        var pos = cm.cursorCoords(completion.options.alignWithWord ? data.from : null);
        var left = pos.left, top = pos.bottom, below = true;
        hints.style.left = left + "px";
        hints.style.top = top + "px";
        // If we're at the edge of the screen, then we want the menu to appear on the left of the cursor.
        var winW = window.innerWidth || Math.max(document.body.offsetWidth, document.documentElement.offsetWidth);
        var winH = window.innerHeight || Math.max(document.body.offsetHeight, document.documentElement.offsetHeight);
        (completion.options.container || document.body).appendChild(hints);
        var box = hints.getBoundingClientRect(), overlapY = box.bottom - winH;
        if (overlapY > 0) {
            var height = box.bottom - box.top, curTop = pos.top - (pos.bottom - box.top);
            if (curTop - height > 0) { // Fits above cursor
                hints.style.top = (top = pos.top - height) + "px";
                below = false;
            } else if (height > winH) {
                hints.style.height = (winH - 5) + "px";
                hints.style.top = (top = pos.bottom - box.top) + "px";
                var cursor = cm.getCursor();
                if (data.from.ch != cursor.ch) {
                    pos = cm.cursorCoords(cursor);
                    hints.style.left = (left = pos.left) + "px";
                    box = hints.getBoundingClientRect();
                }
            }
        }
        var overlapX = box.right - winW;
        if (overlapX > 0) {
            if (box.right - box.left > winW) {
                hints.style.width = (winW - 5) + "px";
                overlapX -= (box.right - box.left) - winW;
            }
            hints.style.left = (left = pos.left - overlapX) + "px";
        }

        cm.addKeyMap(this.keyMap = buildKeyMap(completion, {
            moveFocus: function (n, avoidWrap) {
                widget.changeActive(widget.selectedHint + n, avoidWrap);
            },
            setFocus: function (n) {
                widget.changeActive(n);
            },
            menuSize: function () {
                return widget.screenAmount();
            },
            length: completions.length,
            close: function () {
                completion.close();
            },
            pick: function () {
                widget.pick();
            },
            data: data
        }));

        if (completion.options.closeOnUnfocus) {
            var closingOnBlur;
            cm.on("blur", this.onBlur = function () {
                closingOnBlur = setTimeout(function () {
                    completion.close();
                }, 100);
            });
            cm.on("focus", this.onFocus = function () {
                clearTimeout(closingOnBlur);
            });
        }

        var startScroll = cm.getScrollInfo();
        cm.on("scroll", this.onScroll = function () {
            var curScroll = cm.getScrollInfo(), editor = cm.getWrapperElement().getBoundingClientRect();
            var newTop = top + startScroll.top - curScroll.top;
            var point = newTop - (window.pageYOffset || (document.documentElement || document.body).scrollTop);
            if (!below) point += hints.offsetHeight;
            if (point <= editor.top || point >= editor.bottom) return completion.close();
            hints.style.top = newTop + "px";
            hints.style.left = (left + startScroll.left - curScroll.left) + "px";
        });

        CodeMirror.on(hints, "dblclick", function (e) {
            var t = getHintElement(hints, e.target || e.srcElement);
            if (t && t.hintId != null) {
                widget.changeActive(t.hintId);
                widget.pick();
            }
        });

        CodeMirror.on(hints, "click", function (e) {
            var t = getHintElement(hints, e.target || e.srcElement);
            if (t && t.hintId != null) {
                widget.changeActive(t.hintId);
                if (completion.options.completeOnSingleClick) widget.pick();
            }
        });

        CodeMirror.on(hints, "mousedown", function () {
            setTimeout(function () {
                cm.focus();
            }, 20);
        });

        CodeMirror.signal(data, "select", completions[0], hints.firstChild);
        return true;
    }

    Widget.prototype = {
        close: function () {
            if (this.completion.widget != this) return;
            this.completion.widget = null;
            this.hints.parentNode.removeChild(this.hints);
            this.completion.cm.removeKeyMap(this.keyMap);

            var cm = this.completion.cm;
            if (this.completion.options.closeOnUnfocus) {
                cm.off("blur", this.onBlur);
                cm.off("focus", this.onFocus);
            }
            cm.off("scroll", this.onScroll);
        },

        disable: function () {
            this.completion.cm.removeKeyMap(this.keyMap);
            var widget = this;
            this.keyMap = {
                Enter: function () {
                    widget.picked = true;
                }
            };
            this.completion.cm.addKeyMap(this.keyMap);
        },

        pick: function () {
            this.completion.pick(this.data, this.selectedHint);
        },

        changeActive: function (i, avoidWrap) {
            if (i >= this.data.list.length)
                i = avoidWrap ? this.data.list.length - 1 : 0;
            else if (i < 0)
                i = avoidWrap ? 0 : this.data.list.length - 1;
            if (this.selectedHint == i) return;
            var node = this.hints.childNodes[this.selectedHint];
            node.className = node.className.replace(" " + ACTIVE_HINT_ELEMENT_CLASS, "");
            node = this.hints.childNodes[this.selectedHint = i];
            node.className += " " + ACTIVE_HINT_ELEMENT_CLASS;
            if (node.offsetTop < this.hints.scrollTop)
                this.hints.scrollTop = node.offsetTop - 3;
            else if (node.offsetTop + node.offsetHeight > this.hints.scrollTop + this.hints.clientHeight)
                this.hints.scrollTop = node.offsetTop + node.offsetHeight - this.hints.clientHeight + 3;
            CodeMirror.signal(this.data, "select", this.data.list[this.selectedHint], node);
        },

        screenAmount: function () {
            return Math.floor(this.hints.clientHeight / this.hints.firstChild.offsetHeight) || 1;
        }
    };

    CodeMirror.registerHelper("hint", "auto", function (cm, options) {
        var helpers = cm.getHelpers(cm.getCursor(), "hint"), words;
        if (helpers.length) {
            for (var i = 0; i < helpers.length; i++) {
                var cur = helpers[i](cm, options);
                if (cur && cur.list.length) return cur;
            }
        } else if (words = cm.getHelper(cm.getCursor(), "hintWords")) {
            if (words) return CodeMirror.hint.fromList(cm, {words: words});
        } else if (CodeMirror.hint.anyword) {
            return CodeMirror.hint.anyword(cm, options);
        }
    });

    CodeMirror.registerHelper("hint", "fromList", function (cm, options) {
        var cur = cm.getCursor(), token = cm.getTokenAt(cur);
        var found = [];
        for (var i = 0; i < options.words.length; i++) {
            var word = options.words[i];
            if (word.slice(0, token.string.length) == token.string)
                found.push(word);
        }

        if (found.length) return {
            list: found,
            from: CodeMirror.Pos(cur.line, token.start),
            to: CodeMirror.Pos(cur.line, token.end)
        };
    });

    CodeMirror.commands.autocomplete = CodeMirror.showHint;

    var defaultOptions = {
        hint: CodeMirror.hint.auto,
        completeSingle: true,
        alignWithWord: true,
        closeCharacters: /[\s()\[\]{};:>,]/,
        closeOnUnfocus: true,
        completeOnSingleClick: true,
        container: null,
        customKeys: null,
        extraKeys: null
    };

    CodeMirror.defineOption("hintOptions", null);
});/**
 * Farbtastic Color Picker 1.2
 * © 2008 Steven Wittens
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */

jQuery.fn.farbtastic = function (callback) {
  $.farbtastic(this, callback);
  return this;
};

jQuery.farbtastic = function (container, callback) {
  var container = $(container).get(0);
  return container.farbtastic || (container.farbtastic = new jQuery._farbtastic(container, callback));
}

jQuery._farbtastic = function (container, callback) {
  // Store farbtastic object
  var fb = this;

  // Insert markup
  $(container).html('<div class="farbtastic"><div class="color"></div><div class="wheel"></div><div class="overlay"></div><div class="h-marker marker"></div><div class="sl-marker marker"></div></div>');
  var e = $('.farbtastic', container);
  fb.wheel = $('.wheel', container).get(0);
  // Dimensions
  fb.radius = 84;
  fb.square = 100;
  fb.width = 194;

  // Fix background PNGs in IE6
  if (navigator.appVersion.match(/MSIE [0-6]\./)) {
    $('*', e).each(function () {
      if (this.currentStyle.backgroundImage != 'none') {
        var image = this.currentStyle.backgroundImage;
        image = this.currentStyle.backgroundImage.substring(5, image.length - 2);
        $(this).css({
          'backgroundImage': 'none',
          'filter': "progid:DXImageTransform.Microsoft.AlphaImageLoader(enabled=true, sizingMethod=crop, src='" + image + "')"
        });
      }
    });
  }

  /**
   * Link to the given element(s) or callback.
   */
  fb.linkTo = function (callback) {
    // Unbind previous nodes
    if (typeof fb.callback == 'object') {
      $(fb.callback).unbind('keyup', fb.updateValue);
    }

    // Reset color
    fb.color = null;

    // Bind callback or elements
    if (typeof callback == 'function') {
      fb.callback = callback;
    }
    else if (typeof callback == 'object' || typeof callback == 'string') {
      fb.callback = $(callback);
      fb.callback.bind('keyup', fb.updateValue);
      if (fb.callback.get(0).value) {
        fb.setColor(fb.callback.get(0).value);
      }
    }
    return this;
  }
  fb.updateValue = function (event) {
    if (this.value && this.value != fb.color) {
      fb.setColor(this.value);
    }
  }

  /**
   * Change color with HTML syntax #123456
   */
  fb.setColor = function (color) {
    var unpack = fb.unpack(color);
    if (fb.color != color && unpack) {
      fb.color = color;
      fb.rgb = unpack;
      fb.hsl = fb.RGBToHSL(fb.rgb);
      fb.updateDisplay();
    }
    return this;
  }

  /**
   * Change color with HSL triplet [0..1, 0..1, 0..1]
   */
  fb.setHSL = function (hsl) {
    fb.hsl = hsl;
    fb.rgb = fb.HSLToRGB(hsl);
    fb.color = fb.pack(fb.rgb);
    fb.updateDisplay();
    return this;
  }

  /////////////////////////////////////////////////////

  /**
   * Retrieve the coordinates of the given event relative to the center
   * of the widget.
   */
  fb.widgetCoords = function (event) {
    var x, y;
    var el = event.target || event.srcElement;
    var reference = fb.wheel;

    if (typeof event.offsetX != 'undefined') {
      // Use offset coordinates and find common offsetParent
      var pos = { x: event.offsetX, y: event.offsetY };

      // Send the coordinates upwards through the offsetParent chain.
      var e = el;
      while (e) {
        e.mouseX = pos.x;
        e.mouseY = pos.y;
        pos.x += e.offsetLeft;
        pos.y += e.offsetTop;
        e = e.offsetParent;
      }

      // Look for the coordinates starting from the wheel widget.
      var e = reference;
      var offset = { x: 0, y: 0 }
      while (e) {
        if (typeof e.mouseX != 'undefined') {
          x = e.mouseX - offset.x;
          y = e.mouseY - offset.y;
          break;
        }
        offset.x += e.offsetLeft;
        offset.y += e.offsetTop;
        e = e.offsetParent;
      }

      // Reset stored coordinates
      e = el;
      while (e) {
        e.mouseX = undefined;
        e.mouseY = undefined;
        e = e.offsetParent;
      }
    }
    else {
      // Use absolute coordinates
      var pos = fb.absolutePosition(reference);
      x = (event.pageX || 0*(event.clientX + $('html').get(0).scrollLeft)) - pos.x;
      y = (event.pageY || 0*(event.clientY + $('html').get(0).scrollTop)) - pos.y;
    }
    // Subtract distance to middle
    return { x: x - fb.width / 2, y: y - fb.width / 2 };
  }

  /**
   * Mousedown handler
   */
  fb.mousedown = function (event) {
    // Capture mouse
    if (!document.dragging) {
      $(document).bind('mousemove', fb.mousemove).bind('mouseup', fb.mouseup);
      document.dragging = true;
    }

    // Check which area is being dragged
    var pos = fb.widgetCoords(event);
    fb.circleDrag = Math.max(Math.abs(pos.x), Math.abs(pos.y)) * 2 > fb.square;

    // Process
    fb.mousemove(event);
    return false;
  }

  /**
   * Mousemove handler
   */
  fb.mousemove = function (event) {
    // Get coordinates relative to color picker center
    var pos = fb.widgetCoords(event);

    // Set new HSL parameters
    if (fb.circleDrag) {
      var hue = Math.atan2(pos.x, -pos.y) / 6.28;
      if (hue < 0) hue += 1;
      fb.setHSL([hue, fb.hsl[1], fb.hsl[2]]);
    }
    else {
      var sat = Math.max(0, Math.min(1, -(pos.x / fb.square) + .5));
      var lum = Math.max(0, Math.min(1, -(pos.y / fb.square) + .5));
      fb.setHSL([fb.hsl[0], sat, lum]);
    }
    return false;
  }

  /**
   * Mouseup handler
   */
  fb.mouseup = function () {
    // Uncapture mouse
    $(document).unbind('mousemove', fb.mousemove);
    $(document).unbind('mouseup', fb.mouseup);
    document.dragging = false;
  }

  /**
   * Update the markers and styles
   */
  fb.updateDisplay = function () {
    // Markers
    var angle = fb.hsl[0] * 6.28;
    $('.h-marker', e).css({
      left: Math.round(Math.sin(angle) * fb.radius + fb.width / 2) + 'px',
      top: Math.round(-Math.cos(angle) * fb.radius + fb.width / 2) + 'px'
    });

    $('.sl-marker', e).css({
      left: Math.round(fb.square * (.5 - fb.hsl[1]) + fb.width / 2) + 'px',
      top: Math.round(fb.square * (.5 - fb.hsl[2]) + fb.width / 2) + 'px'
    });

    // Saturation/Luminance gradient
    $('.color', e).css('backgroundColor', fb.pack(fb.HSLToRGB([fb.hsl[0], 1, 0.5])));

    // Linked elements or callback
    if (typeof fb.callback == 'object') {
      // Set background/foreground color
      $(fb.callback).css({
        backgroundColor: fb.color,
        color: fb.hsl[2] > 0.5 ? '#000' : '#fff'
      });

      // Change linked value
      $(fb.callback).each(function() {
        if (this.value && this.value != fb.color) {
          this.value = fb.color;
        }
      });
    }
    else if (typeof fb.callback == 'function') {
      fb.callback.call(fb, fb.color);
    }
  }

  /**
   * Get absolute position of element
   */
  fb.absolutePosition = function (el) {
    var r = { x: el.offsetLeft, y: el.offsetTop };
    // Resolve relative to offsetParent
    if (el.offsetParent) {
      var tmp = fb.absolutePosition(el.offsetParent);
      r.x += tmp.x;
      r.y += tmp.y;
    }
    return r;
  };

  /* Various color utility functions */
  fb.pack = function (rgb) {
    var r = Math.round(rgb[0] * 255);
    var g = Math.round(rgb[1] * 255);
    var b = Math.round(rgb[2] * 255);
    return '#' + (r < 16 ? '0' : '') + r.toString(16) +
           (g < 16 ? '0' : '') + g.toString(16) +
           (b < 16 ? '0' : '') + b.toString(16);
  }

  fb.unpack = function (color) {
    if (color.length == 7) {
      return [parseInt('0x' + color.substring(1, 3)) / 255,
        parseInt('0x' + color.substring(3, 5)) / 255,
        parseInt('0x' + color.substring(5, 7)) / 255];
    }
    else if (color.length == 4) {
      return [parseInt('0x' + color.substring(1, 2)) / 15,
        parseInt('0x' + color.substring(2, 3)) / 15,
        parseInt('0x' + color.substring(3, 4)) / 15];
    }
  }

  fb.HSLToRGB = function (hsl) {
    var m1, m2, r, g, b;
    var h = hsl[0], s = hsl[1], l = hsl[2];
    m2 = (l <= 0.5) ? l * (s + 1) : l + s - l*s;
    m1 = l * 2 - m2;
    return [this.hueToRGB(m1, m2, h+0.33333),
        this.hueToRGB(m1, m2, h),
        this.hueToRGB(m1, m2, h-0.33333)];
  }

  fb.hueToRGB = function (m1, m2, h) {
    h = (h < 0) ? h + 1 : ((h > 1) ? h - 1 : h);
    if (h * 6 < 1) return m1 + (m2 - m1) * h * 6;
    if (h * 2 < 1) return m2;
    if (h * 3 < 2) return m1 + (m2 - m1) * (0.66666 - h) * 6;
    return m1;
  }

  fb.RGBToHSL = function (rgb) {
    var min, max, delta, h, s, l;
    var r = rgb[0], g = rgb[1], b = rgb[2];
    min = Math.min(r, Math.min(g, b));
    max = Math.max(r, Math.max(g, b));
    delta = max - min;
    l = (min + max) / 2;
    s = 0;
    if (l > 0 && l < 1) {
      s = delta / (l < 0.5 ? (2 * l) : (2 - 2 * l));
    }
    h = 0;
    if (delta > 0) {
      if (max == r && max != g) h += (g - b) / delta;
      if (max == g && max != b) h += (2 + (b - r) / delta);
      if (max == b && max != r) h += (4 + (r - g) / delta);
      h /= 6;
    }
    return [h, s, l];
  }

  // Install mousedown handler (the others are set on the document on-demand)
  $('*', e).mousedown(fb.mousedown);

    // Init color
  fb.setColor('#000000');

  // Set linked elements/callback
  if (callback) {
    fb.linkTo(callback);
  }
}/*!
 * jQuery Mousewheel 3.1.13
 *
 * Copyright jQuery Foundation and other contributors
 * Released under the MIT license
 * http://jquery.org/license
 */

(function (factory) {
    if ( typeof define === 'function' && define.amd ) {
        // AMD. Register as an anonymous module.
        define(['../core/jquery'], factory);
    } else if (typeof exports === 'object') {
        // Node/CommonJS style for Browserify
        module.exports = factory;
    } else {
        // Browser globals
        factory(jQuery);
    }
}(function ($) {

    var toFix  = ['wheel', 'mousewheel', 'DOMMouseScroll', 'MozMousePixelScroll'],
        toBind = ( 'onwheel' in document || document.documentMode >= 9 ) ?
                    ['wheel'] : ['mousewheel', 'DomMouseScroll', 'MozMousePixelScroll'],
        slice  = Array.prototype.slice,
        nullLowestDeltaTimeout, lowestDelta;

    if ( $.event.fixHooks ) {
        for ( var i = toFix.length; i; ) {
            $.event.fixHooks[ toFix[--i] ] = $.event.mouseHooks;
        }
    }

    var special = $.event.special.mousewheel = {
        version: '3.1.12',

        setup: function() {
            if ( this.addEventListener ) {
                for ( var i = toBind.length; i; ) {
                    this.addEventListener( toBind[--i], handler, false );
                }
            } else {
                this.onmousewheel = handler;
            }
            // Store the line height and page height for this particular element
            $.data(this, 'mousewheel-line-height', special.getLineHeight(this));
            $.data(this, 'mousewheel-page-height', special.getPageHeight(this));
        },

        teardown: function() {
            if ( this.removeEventListener ) {
                for ( var i = toBind.length; i; ) {
                    this.removeEventListener( toBind[--i], handler, false );
                }
            } else {
                this.onmousewheel = null;
            }
            // Clean up the data we added to the element
            $.removeData(this, 'mousewheel-line-height');
            $.removeData(this, 'mousewheel-page-height');
        },

        getLineHeight: function(elem) {
            var $elem = $(elem),
                $parent = $elem['offsetParent' in $.fn ? 'offsetParent' : 'parent']();
            if (!$parent.length) {
                $parent = $('body');
            }
            return parseInt($parent.css('fontSize'), 10) || parseInt($elem.css('fontSize'), 10) || 16;
        },

        getPageHeight: function(elem) {
            return $(elem).height();
        },

        settings: {
            adjustOldDeltas: true, // see shouldAdjustOldDeltas() below
            normalizeOffset: true  // calls getBoundingClientRect for each event
        }
    };

    $.fn.extend({
        mousewheel: function(fn) {
            return fn ? this.bind('mousewheel', fn) : this.trigger('mousewheel');
        },

        unmousewheel: function(fn) {
            return this.unbind('mousewheel', fn);
        }
    });


    function handler(event) {
        var orgEvent   = event || window.event,
            args       = slice.call(arguments, 1),
            delta      = 0,
            deltaX     = 0,
            deltaY     = 0,
            absDelta   = 0,
            offsetX    = 0,
            offsetY    = 0;
        event = $.event.fix(orgEvent);
        event.type = 'mousewheel';

        // Old school scrollwheel delta
        if ( 'detail'      in orgEvent ) { deltaY = orgEvent.detail * -1;      }
        if ( 'wheelDelta'  in orgEvent ) { deltaY = orgEvent.wheelDelta;       }
        if ( 'wheelDeltaY' in orgEvent ) { deltaY = orgEvent.wheelDeltaY;      }
        if ( 'wheelDeltaX' in orgEvent ) { deltaX = orgEvent.wheelDeltaX * -1; }

        // Firefox < 17 horizontal scrolling related to DOMMouseScroll event
        if ( 'axis' in orgEvent && orgEvent.axis === orgEvent.HORIZONTAL_AXIS ) {
            deltaX = deltaY * -1;
            deltaY = 0;
        }

        // Set delta to be deltaY or deltaX if deltaY is 0 for backwards compatabilitiy
        delta = deltaY === 0 ? deltaX : deltaY;

        // New school wheel delta (wheel event)
        if ( 'deltaY' in orgEvent ) {
            deltaY = orgEvent.deltaY * -1;
            delta  = deltaY;
        }
        if ( 'deltaX' in orgEvent ) {
            deltaX = orgEvent.deltaX;
            if ( deltaY === 0 ) { delta  = deltaX * -1; }
        }

        // No change actually happened, no reason to go any further
        if ( deltaY === 0 && deltaX === 0 ) { return; }

        // Need to convert lines and pages to pixels if we aren't already in pixels
        // There are three delta modes:
        //   * deltaMode 0 is by pixels, nothing to do
        //   * deltaMode 1 is by lines
        //   * deltaMode 2 is by pages
        if ( orgEvent.deltaMode === 1 ) {
            var lineHeight = $.data(this, 'mousewheel-line-height');
            delta  *= lineHeight;
            deltaY *= lineHeight;
            deltaX *= lineHeight;
        } else if ( orgEvent.deltaMode === 2 ) {
            var pageHeight = $.data(this, 'mousewheel-page-height');
            delta  *= pageHeight;
            deltaY *= pageHeight;
            deltaX *= pageHeight;
        }

        // Store lowest absolute delta to normalize the delta values
        absDelta = Math.max( Math.abs(deltaY), Math.abs(deltaX) );

        if ( !lowestDelta || absDelta < lowestDelta ) {
            lowestDelta = absDelta;

            // Adjust older deltas if necessary
            if ( shouldAdjustOldDeltas(orgEvent, absDelta) ) {
                lowestDelta /= 40;
            }
        }

        // Adjust older deltas if necessary
        if ( shouldAdjustOldDeltas(orgEvent, absDelta) ) {
            // Divide all the things by 40!
            delta  /= 40;
            deltaX /= 40;
            deltaY /= 40;
        }

        // Get a whole, normalized value for the deltas
        delta  = Math[ delta  >= 1 ? 'floor' : 'ceil' ](delta  / lowestDelta);
        deltaX = Math[ deltaX >= 1 ? 'floor' : 'ceil' ](deltaX / lowestDelta);
        deltaY = Math[ deltaY >= 1 ? 'floor' : 'ceil' ](deltaY / lowestDelta);

        // Normalise offsetX and offsetY properties
        if ( special.settings.normalizeOffset && this.getBoundingClientRect ) {
            var boundingRect = this.getBoundingClientRect();
            offsetX = event.clientX - boundingRect.left;
            offsetY = event.clientY - boundingRect.top;
        }

        // Add information to the event object
        event.deltaX = deltaX;
        event.deltaY = deltaY;
        event.deltaFactor = lowestDelta;
        event.offsetX = offsetX;
        event.offsetY = offsetY;
        // Go ahead and set deltaMode to 0 since we converted to pixels
        // Although this is a little odd since we overwrite the deltaX/Y
        // properties with normalized deltas.
        event.deltaMode = 0;

        // Add event and delta to the front of the arguments
        args.unshift(event, delta, deltaX, deltaY);

        // Clearout lowestDelta after sometime to better
        // handle multiple device types that give different
        // a different lowestDelta
        // Ex: trackpad = 3 and mouse wheel = 120
        if (nullLowestDeltaTimeout) { clearTimeout(nullLowestDeltaTimeout); }
        nullLowestDeltaTimeout = setTimeout(nullLowestDelta, 200);

        return ($.event.dispatch || $.event.handle).apply(this, args);
    }

    function nullLowestDelta() {
        lowestDelta = null;
    }

    function shouldAdjustOldDeltas(orgEvent, absDelta) {
        // If this is an older event and the delta is divisable by 120,
        // then we are assuming that the browser is treating this as an
        // older mouse wheel event and that we should divide the deltas
        // by 40 to try and get a more usable deltaFactor.
        // Side note, this actually impacts the reported scroll distance
        // in older browsers and can cause scrolling to be slower than native.
        // Turn this off by setting $.event.special.mousewheel.settings.adjustOldDeltas to false.
        return special.settings.adjustOldDeltas && orgEvent.type === 'mousewheel' && absDelta % 120 === 0;
    }

}));// Copyright (c) 2013 Adobe Systems Incorporated. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// ┌────────────────────────────────────────────────────────────┐ \\
// │ Eve 0.4.2 - JavaScript Events Library                      │ \\
// ├────────────────────────────────────────────────────────────┤ \\
// │ Author Dmitry Baranovskiy (http://dmitry.baranovskiy.com/) │ \\
// └────────────────────────────────────────────────────────────┘ \\
(function (glob, factory) {
    if (typeof define === "function" && define.amd) {
        define("eve", function() {
            return factory();
        });
    } else if (typeof exports === "object") {
        module.exports = factory();
    } else {
        glob.eve = factory();
    }
}(this, function(){
    var version = "0.4.2",
        has = "hasOwnProperty",
        separator = /[\.\/]/,
        wildcard = "*",
        fun = function () {},
        numsort = function (a, b) {
            return a - b;
        },
        current_event,
        stop,
        events = {n: {}},
    /*\
     * eve
     [ method ]

     * Fires event with given `name`, given scope and other parameters.

     > Arguments

     - name (string) name of the *event*, dot (`.`) or slash (`/`) separated
     - scope (object) context for the event handlers
     - varargs (...) the rest of arguments will be sent to event handlers

     = (object) array of returned values from the listeners
     \*/
        eve = function (name, scope) {
            name = String(name);
            var e = events,
                oldstop = stop,
                args = Array.prototype.slice.call(arguments, 2),
                listeners = eve.listeners(name),
                z = 0,
                f = false,
                l,
                indexed = [],
                queue = {},
                out = [],
                ce = current_event,
                errors = [];
            current_event = name;
            stop = 0;
            for (var i = 0, ii = listeners.length; i < ii; i++) if ("zIndex" in listeners[i]) {
                indexed.push(listeners[i].zIndex);
                if (listeners[i].zIndex < 0) {
                    queue[listeners[i].zIndex] = listeners[i];
                }
            }
            indexed.sort(numsort);
            while (indexed[z] < 0) {
                l = queue[indexed[z++]];
                out.push(l.apply(scope, args));
                if (stop) {
                    stop = oldstop;
                    return out;
                }
            }
            for (i = 0; i < ii; i++) {
                l = listeners[i];
                if ("zIndex" in l) {
                    if (l.zIndex == indexed[z]) {
                        out.push(l.apply(scope, args));
                        if (stop) {
                            break;
                        }
                        do {
                            z++;
                            l = queue[indexed[z]];
                            l && out.push(l.apply(scope, args));
                            if (stop) {
                                break;
                            }
                        } while (l)
                    } else {
                        queue[l.zIndex] = l;
                    }
                } else {
                    out.push(l.apply(scope, args));
                    if (stop) {
                        break;
                    }
                }
            }
            stop = oldstop;
            current_event = ce;
            return out.length ? out : null;
        };
    // Undocumented. Debug only.
    eve._events = events;
    /*\
     * eve.listeners
     [ method ]

     * Internal method which gives you array of all event handlers that will be triggered by the given `name`.

     > Arguments

     - name (string) name of the event, dot (`.`) or slash (`/`) separated

     = (array) array of event handlers
     \*/
    eve.listeners = function (name) {
        var names = name.split(separator),
            e = events,
            item,
            items,
            k,
            i,
            ii,
            j,
            jj,
            nes,
            es = [e],
            out = [];
        for (i = 0, ii = names.length; i < ii; i++) {
            nes = [];
            for (j = 0, jj = es.length; j < jj; j++) {
                e = es[j].n;
                items = [e[names[i]], e[wildcard]];
                k = 2;
                while (k--) {
                    item = items[k];
                    if (item) {
                        nes.push(item);
                        out = out.concat(item.f || []);
                    }
                }
            }
            es = nes;
        }
        return out;
    };

    /*\
     * eve.on
     [ method ]
     **
     * Binds given event handler with a given name. You can use wildcards “`*`” for the names:
     | eve.on("*.under.*", f);
     | eve("mouse.under.floor"); // triggers f
     * Use @eve to trigger the listener.
     **
     > Arguments
     **
     - name (string) name of the event, dot (`.`) or slash (`/`) separated, with optional wildcards
     - f (function) event handler function
     **
     = (function) returned function accepts a single numeric parameter that represents z-index of the handler. It is an optional feature and only used when you need to ensure that some subset of handlers will be invoked in a given order, despite of the order of assignment.
     > Example:
     | eve.on("mouse", eatIt)(2);
     | eve.on("mouse", scream);
     | eve.on("mouse", catchIt)(1);
     * This will ensure that `catchIt()` function will be called before `eatIt()`.
     *
     * If you want to put your handler before non-indexed handlers, specify a negative value.
     * Note: I assume most of the time you don’t need to worry about z-index, but it’s nice to have this feature “just in case”.
     \*/
    eve.on = function (name, f) {
        name = String(name);
        if (typeof f != "function") {
            return function () {};
        }
        var names = name.split(separator),
            e = events;
        for (var i = 0, ii = names.length; i < ii; i++) {
            e = e.n;
            e = e.hasOwnProperty(names[i]) && e[names[i]] || (e[names[i]] = {n: {}});
        }
        e.f = e.f || [];
        for (i = 0, ii = e.f.length; i < ii; i++) if (e.f[i] == f) {
            return fun;
        }
        e.f.push(f);
        return function (zIndex) {
            if (+zIndex == +zIndex) {
                f.zIndex = +zIndex;
            }
        };
    };
    /*\
     * eve.f
     [ method ]
     **
     * Returns function that will fire given event with optional arguments.
     * Arguments that will be passed to the result function will be also
     * concated to the list of final arguments.
     | el.onclick = eve.f("click", 1, 2);
     | eve.on("click", function (a, b, c) {
     |     console.log(a, b, c); // 1, 2, [event object]
     | });
     > Arguments
     - event (string) event name
     - varargs (…) and any other arguments
     = (function) possible event handler function
     \*/
    eve.f = function (event) {
        var attrs = [].slice.call(arguments, 1);
        return function () {
            eve.apply(null, [event, null].concat(attrs).concat([].slice.call(arguments, 0)));
        };
    };
    /*\
     * eve.stop
     [ method ]
     **
     * Is used inside an event handler to stop the event, preventing any subsequent listeners from firing.
     \*/
    eve.stop = function () {
        stop = 1;
    };
    /*\
     * eve.nt
     [ method ]
     **
     * Could be used inside event handler to figure out actual name of the event.
     **
     > Arguments
     **
     - subname (string) #optional subname of the event
     **
     = (string) name of the event, if `subname` is not specified
     * or
     = (boolean) `true`, if current event’s name contains `subname`
     \*/
    eve.nt = function (subname) {
        if (subname) {
            return new RegExp("(?:\\.|\\/|^)" + subname + "(?:\\.|\\/|$)").test(current_event);
        }
        return current_event;
    };
    /*\
     * eve.nts
     [ method ]
     **
     * Could be used inside event handler to figure out actual name of the event.
     **
     **
     = (array) names of the event
     \*/
    eve.nts = function () {
        return current_event.split(separator);
    };
    /*\
     * eve.off
     [ method ]
     **
     * Removes given function from the list of event listeners assigned to given name.
     * If no arguments specified all the events will be cleared.
     **
     > Arguments
     **
     - name (string) name of the event, dot (`.`) or slash (`/`) separated, with optional wildcards
     - f (function) event handler function
     \*/
    /*\
     * eve.unbind
     [ method ]
     **
     * See @eve.off
     \*/
    eve.off = eve.unbind = function (name, f) {
        if (!name) {
            eve._events = events = {n: {}};
            return;
        }
        var names = name.split(separator),
            e,
            key,
            splice,
            i, ii, j, jj,
            cur = [events];
        for (i = 0, ii = names.length; i < ii; i++) {
            for (j = 0; j < cur.length; j += splice.length - 2) {
                splice = [j, 1];
                e = cur[j].n;
                if (names[i] != wildcard) {
                    if (e[names[i]]) {
                        splice.push(e[names[i]]);
                    }
                } else {
                    for (key in e) if (e[has](key)) {
                        splice.push(e[key]);
                    }
                }
                cur.splice.apply(cur, splice);
            }
        }
        for (i = 0, ii = cur.length; i < ii; i++) {
            e = cur[i];
            while (e.n) {
                if (f) {
                    if (e.f) {
                        for (j = 0, jj = e.f.length; j < jj; j++) if (e.f[j] == f) {
                            e.f.splice(j, 1);
                            break;
                        }
                        !e.f.length && delete e.f;
                    }
                    for (key in e.n) if (e.n[has](key) && e.n[key].f) {
                        var funcs = e.n[key].f;
                        for (j = 0, jj = funcs.length; j < jj; j++) if (funcs[j] == f) {
                            funcs.splice(j, 1);
                            break;
                        }
                        !funcs.length && delete e.n[key].f;
                    }
                } else {
                    delete e.f;
                    for (key in e.n) if (e.n[has](key) && e.n[key].f) {
                        delete e.n[key].f;
                    }
                }
                e = e.n;
            }
        }
    };
    /*\
     * eve.once
     [ method ]
     **
     * Binds given event handler with a given name to only run once then unbind itself.
     | eve.once("login", f);
     | eve("login"); // triggers f
     | eve("login"); // no listeners
     * Use @eve to trigger the listener.
     **
     > Arguments
     **
     - name (string) name of the event, dot (`.`) or slash (`/`) separated, with optional wildcards
     - f (function) event handler function
     **
     = (function) same return function as @eve.on
     \*/
    eve.once = function (name, f) {
        var f2 = function () {
            eve.unbind(name, f2);
            return f.apply(this, arguments);
        };
        return eve.on(name, f2);
    };
    /*\
     * eve.version
     [ property (string) ]
     **
     * Current version of the library.
     \*/
    eve.version = version;
    eve.toString = function () {
        return "You are running Eve " + version;
    };

    return eve;
}));

// ┌────────────────────────────────────────────────────────────────────┐ \\
// │ Raphaël 2.1.4 - JavaScript Vector Library                      │ \\
// ├────────────────────────────────────────────────────────────────────┤ \\
// │ Core Module                                                        │ \\
// ├────────────────────────────────────────────────────────────────────┤ \\
// │ Licensed under the MIT (http://raphaeljs.com/license.html) license.│ \\
// └────────────────────────────────────────────────────────────────────┘ \\

(function (glob, factory) {
    if (typeof define === "function" && define.amd) {
        define("raphael.core", ["eve"], function(eve) {
            return factory(eve);
        });
    } else if (typeof exports === "object") {
        module.exports = factory(require("eve"));
    } else {
        glob.Raphael = factory(glob.eve);
    }
}(this, function (eve) {
    /*\
     * Raphael
     [ method ]
     **
     * Creates a canvas object on which to draw.
     * You must do this first, as all future calls to drawing methods
     * from this instance will be bound to this canvas.
     > Parameters
     **
     - container (HTMLElement|string) DOM element or its ID which is going to be a parent for drawing surface
     - width (number)
     - height (number)
     - callback (function) #optional callback function which is going to be executed in the context of newly created paper
     * or
     - x (number)
     - y (number)
     - width (number)
     - height (number)
     - callback (function) #optional callback function which is going to be executed in the context of newly created paper
     * or
     - all (array) (first 3 or 4 elements in the array are equal to [containerID, width, height] or [x, y, width, height]. The rest are element descriptions in format {type: type, <attributes>}). See @Paper.add.
     - callback (function) #optional callback function which is going to be executed in the context of newly created paper
     * or
     - onReadyCallback (function) function that is going to be called on DOM ready event. You can also subscribe to this event via Eve’s “DOMLoad” event. In this case method returns `undefined`.
     = (object) @Paper
     > Usage
     | // Each of the following examples create a canvas
     | // that is 320px wide by 200px high.
     | // Canvas is created at the viewport’s 10,50 coordinate.
     | var paper = Raphael(10, 50, 320, 200);
     | // Canvas is created at the top left corner of the #notepad element
     | // (or its top right corner in dir="rtl" elements)
     | var paper = Raphael(document.getElementById("notepad"), 320, 200);
     | // Same as above
     | var paper = Raphael("notepad", 320, 200);
     | // Image dump
     | var set = Raphael(["notepad", 320, 200, {
     |     type: "rect",
     |     x: 10,
     |     y: 10,
     |     width: 25,
     |     height: 25,
     |     stroke: "#f00"
     | }, {
     |     type: "text",
     |     x: 30,
     |     y: 40,
     |     text: "Dump"
     | }]);
     \*/
    function R(first) {
        if (R.is(first, "function")) {
            return loaded ? first() : eve.on("raphael.DOMload", first);
        } else if (R.is(first, array)) {
            return R._engine.create[apply](R, first.splice(0, 3 + R.is(first[0], nu))).add(first);
        } else {
            var args = Array.prototype.slice.call(arguments, 0);
            if (R.is(args[args.length - 1], "function")) {
                var f = args.pop();
                return loaded ? f.call(R._engine.create[apply](R, args)) : eve.on("raphael.DOMload", function () {
                    f.call(R._engine.create[apply](R, args));
                });
            } else {
                return R._engine.create[apply](R, arguments);
            }
        }
    }
    R.version = "2.1.4";
    R.eve = eve;
    var loaded,
        separator = /[, ]+/,
        elements = {circle: 1, rect: 1, path: 1, ellipse: 1, text: 1, image: 1},
        formatrg = /\{(\d+)\}/g,
        proto = "prototype",
        has = "hasOwnProperty",
        g = {
            doc: document,
            win: window
        },
        oldRaphael = {
            was: Object.prototype[has].call(g.win, "Raphael"),
            is: g.win.Raphael
        },
        Paper = function () {
            /*\
             * Paper.ca
             [ property (object) ]
             **
             * Shortcut for @Paper.customAttributes
             \*/
            /*\
             * Paper.customAttributes
             [ property (object) ]
             **
             * If you have a set of attributes that you would like to represent
             * as a function of some number you can do it easily with custom attributes:
             > Usage
             | paper.customAttributes.hue = function (num) {
             |     num = num % 1;
             |     return {fill: "hsb(" + num + ", 0.75, 1)"};
             | };
             | // Custom attribute “hue” will change fill
             | // to be given hue with fixed saturation and brightness.
             | // Now you can use it like this:
             | var c = paper.circle(10, 10, 10).attr({hue: .45});
             | // or even like this:
             | c.animate({hue: 1}, 1e3);
             |
             | // You could also create custom attribute
             | // with multiple parameters:
             | paper.customAttributes.hsb = function (h, s, b) {
             |     return {fill: "hsb(" + [h, s, b].join(",") + ")"};
             | };
             | c.attr({hsb: "0.5 .8 1"});
             | c.animate({hsb: [1, 0, 0.5]}, 1e3);
             \*/
            this.ca = this.customAttributes = {};
        },
        paperproto,
        appendChild = "appendChild",
        apply = "apply",
        concat = "concat",
        supportsTouch = ('ontouchstart' in g.win) || g.win.DocumentTouch && g.doc instanceof DocumentTouch, //taken from Modernizr touch test
        E = "",
        S = " ",
        Str = String,
        split = "split",
        events = "click dblclick mousedown mousemove mouseout mouseover mouseup touchstart touchmove touchend touchcancel"[split](S),
        touchMap = {
            mousedown: "touchstart",
            mousemove: "touchmove",
            mouseup: "touchend"
        },
        lowerCase = Str.prototype.toLowerCase,
        math = Math,
        mmax = math.max,
        mmin = math.min,
        abs = math.abs,
        pow = math.pow,
        PI = math.PI,
        nu = "number",
        string = "string",
        array = "array",
        toString = "toString",
        fillString = "fill",
        objectToString = Object.prototype.toString,
        paper = {},
        push = "push",
        ISURL = R._ISURL = /^url\(['"]?(.+?)['"]?\)$/i,
        colourRegExp = /^\s*((#[a-f\d]{6})|(#[a-f\d]{3})|rgba?\(\s*([\d\.]+%?\s*,\s*[\d\.]+%?\s*,\s*[\d\.]+%?(?:\s*,\s*[\d\.]+%?)?)\s*\)|hsba?\(\s*([\d\.]+(?:deg|\xb0|%)?\s*,\s*[\d\.]+%?\s*,\s*[\d\.]+(?:%?\s*,\s*[\d\.]+)?)%?\s*\)|hsla?\(\s*([\d\.]+(?:deg|\xb0|%)?\s*,\s*[\d\.]+%?\s*,\s*[\d\.]+(?:%?\s*,\s*[\d\.]+)?)%?\s*\))\s*$/i,
        isnan = {"NaN": 1, "Infinity": 1, "-Infinity": 1},
        bezierrg = /^(?:cubic-)?bezier\(([^,]+),([^,]+),([^,]+),([^\)]+)\)/,
        round = math.round,
        setAttribute = "setAttribute",
        toFloat = parseFloat,
        toInt = parseInt,
        upperCase = Str.prototype.toUpperCase,
        availableAttrs = R._availableAttrs = {
            "arrow-end": "none",
            "arrow-start": "none",
            blur: 0,
            "clip-rect": "0 0 1e9 1e9",
            cursor: "default",
            cx: 0,
            cy: 0,
            fill: "#fff",
            "fill-opacity": 1,
            font: '10px "Arial"',
            "font-family": '"Arial"',
            "font-size": "10",
            "font-style": "normal",
            "font-weight": 400,
            gradient: 0,
            height: 0,
            href: "http://raphaeljs.com/",
            "letter-spacing": 0,
            opacity: 1,
            path: "M0,0",
            r: 0,
            rx: 0,
            ry: 0,
            src: "",
            stroke: "#000",
            "stroke-dasharray": "",
            "stroke-linecap": "butt",
            "stroke-linejoin": "butt",
            "stroke-miterlimit": 0,
            "stroke-opacity": 1,
            "stroke-width": 1,
            target: "_blank",
            "text-anchor": "middle",
            title: "Raphael",
            transform: "",
            width: 0,
            x: 0,
            y: 0
        },
        availableAnimAttrs = R._availableAnimAttrs = {
            blur: nu,
            "clip-rect": "csv",
            cx: nu,
            cy: nu,
            fill: "colour",
            "fill-opacity": nu,
            "font-size": nu,
            height: nu,
            opacity: nu,
            path: "path",
            r: nu,
            rx: nu,
            ry: nu,
            stroke: "colour",
            "stroke-opacity": nu,
            "stroke-width": nu,
            transform: "transform",
            width: nu,
            x: nu,
            y: nu
        },
        whitespace = /[\x09\x0a\x0b\x0c\x0d\x20\xa0\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000\u2028\u2029]/g,
        commaSpaces = /[\x09\x0a\x0b\x0c\x0d\x20\xa0\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000\u2028\u2029]*,[\x09\x0a\x0b\x0c\x0d\x20\xa0\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000\u2028\u2029]*/,
        hsrg = {hs: 1, rg: 1},
        p2s = /,?([achlmqrstvxz]),?/gi,
        pathCommand = /([achlmrqstvz])[\x09\x0a\x0b\x0c\x0d\x20\xa0\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000\u2028\u2029,]*((-?\d*\.?\d*(?:e[\-+]?\d+)?[\x09\x0a\x0b\x0c\x0d\x20\xa0\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000\u2028\u2029]*,?[\x09\x0a\x0b\x0c\x0d\x20\xa0\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000\u2028\u2029]*)+)/ig,
        tCommand = /([rstm])[\x09\x0a\x0b\x0c\x0d\x20\xa0\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000\u2028\u2029,]*((-?\d*\.?\d*(?:e[\-+]?\d+)?[\x09\x0a\x0b\x0c\x0d\x20\xa0\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000\u2028\u2029]*,?[\x09\x0a\x0b\x0c\x0d\x20\xa0\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000\u2028\u2029]*)+)/ig,
        pathValues = /(-?\d*\.?\d*(?:e[\-+]?\d+)?)[\x09\x0a\x0b\x0c\x0d\x20\xa0\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000\u2028\u2029]*,?[\x09\x0a\x0b\x0c\x0d\x20\xa0\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000\u2028\u2029]*/ig,
        radial_gradient = R._radial_gradient = /^r(?:\(([^,]+?)[\x09\x0a\x0b\x0c\x0d\x20\xa0\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000\u2028\u2029]*,[\x09\x0a\x0b\x0c\x0d\x20\xa0\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000\u2028\u2029]*([^\)]+?)\))?/,
        eldata = {},
        sortByKey = function (a, b) {
            return a.key - b.key;
        },
        sortByNumber = function (a, b) {
            return toFloat(a) - toFloat(b);
        },
        fun = function () {},
        pipe = function (x) {
            return x;
        },
        rectPath = R._rectPath = function (x, y, w, h, r) {
            if (r) {
                return [["M", x + r, y], ["l", w - r * 2, 0], ["a", r, r, 0, 0, 1, r, r], ["l", 0, h - r * 2], ["a", r, r, 0, 0, 1, -r, r], ["l", r * 2 - w, 0], ["a", r, r, 0, 0, 1, -r, -r], ["l", 0, r * 2 - h], ["a", r, r, 0, 0, 1, r, -r], ["z"]];
            }
            return [["M", x, y], ["l", w, 0], ["l", 0, h], ["l", -w, 0], ["z"]];
        },
        ellipsePath = function (x, y, rx, ry) {
            if (ry == null) {
                ry = rx;
            }
            return [["M", x, y], ["m", 0, -ry], ["a", rx, ry, 0, 1, 1, 0, 2 * ry], ["a", rx, ry, 0, 1, 1, 0, -2 * ry], ["z"]];
        },
        getPath = R._getPath = {
            path: function (el) {
                return el.attr("path");
            },
            circle: function (el) {
                var a = el.attrs;
                return ellipsePath(a.cx, a.cy, a.r);
            },
            ellipse: function (el) {
                var a = el.attrs;
                return ellipsePath(a.cx, a.cy, a.rx, a.ry);
            },
            rect: function (el) {
                var a = el.attrs;
                return rectPath(a.x, a.y, a.width, a.height, a.r);
            },
            image: function (el) {
                var a = el.attrs;
                return rectPath(a.x, a.y, a.width, a.height);
            },
            text: function (el) {
                var bbox = el._getBBox();
                return rectPath(bbox.x, bbox.y, bbox.width, bbox.height);
            },
            set : function(el) {
                var bbox = el._getBBox();
                return rectPath(bbox.x, bbox.y, bbox.width, bbox.height);
            }
        },
    /*\
     * Raphael.mapPath
     [ method ]
     **
     * Transform the path string with given matrix.
     > Parameters
     - path (string) path string
     - matrix (object) see @Matrix
     = (string) transformed path string
     \*/
        mapPath = R.mapPath = function (path, matrix) {
            if (!matrix) {
                return path;
            }
            var x, y, i, j, ii, jj, pathi;
            path = path2curve(path);
            for (i = 0, ii = path.length; i < ii; i++) {
                pathi = path[i];
                for (j = 1, jj = pathi.length; j < jj; j += 2) {
                    x = matrix.x(pathi[j], pathi[j + 1]);
                    y = matrix.y(pathi[j], pathi[j + 1]);
                    pathi[j] = x;
                    pathi[j + 1] = y;
                }
            }
            return path;
        };

    R._g = g;
    /*\
     * Raphael.type
     [ property (string) ]
     **
     * Can be “SVG”, “VML” or empty, depending on browser support.
     \*/
    R.type = (g.win.SVGAngle || g.doc.implementation.hasFeature("http://www.w3.org/TR/SVG11/feature#BasicStructure", "1.1") ? "SVG" : "VML");
    if (R.type == "VML") {
        var d = g.doc.createElement("div"),
            b;
        d.innerHTML = '<v:shape adj="1"/>';
        b = d.firstChild;
        b.style.behavior = "url(#default#VML)";
        if (!(b && typeof b.adj == "object")) {
            return (R.type = E);
        }
        d = null;
    }
    /*\
     * Raphael.svg
     [ property (boolean) ]
     **
     * `true` if browser supports SVG.
     \*/
    /*\
     * Raphael.vml
     [ property (boolean) ]
     **
     * `true` if browser supports VML.
     \*/
    R.svg = !(R.vml = R.type == "VML");
    R._Paper = Paper;
    /*\
     * Raphael.fn
     [ property (object) ]
     **
     * You can add your own method to the canvas. For example if you want to draw a pie chart,
     * you can create your own pie chart function and ship it as a Raphaël plugin. To do this
     * you need to extend the `Raphael.fn` object. You should modify the `fn` object before a
     * Raphaël instance is created, otherwise it will take no effect. Please note that the
     * ability for namespaced plugins was removed in Raphael 2.0. It is up to the plugin to
     * ensure any namespacing ensures proper context.
     > Usage
     | Raphael.fn.arrow = function (x1, y1, x2, y2, size) {
     |     return this.path( ... );
     | };
     | // or create namespace
     | Raphael.fn.mystuff = {
     |     arrow: function () {…},
     |     star: function () {…},
     |     // etc…
     | };
     | var paper = Raphael(10, 10, 630, 480);
     | // then use it
     | paper.arrow(10, 10, 30, 30, 5).attr({fill: "#f00"});
     | paper.mystuff.arrow();
     | paper.mystuff.star();
     \*/
    R.fn = paperproto = Paper.prototype = R.prototype;
    R._id = 0;
    R._oid = 0;
    /*\
     * Raphael.is
     [ method ]
     **
     * Handful of replacements for `typeof` operator.
     > Parameters
     - o (…) any object or primitive
     - type (string) name of the type, i.e. “string”, “function”, “number”, etc.
     = (boolean) is given value is of given type
     \*/
    R.is = function (o, type) {
        type = lowerCase.call(type);
        if (type == "finite") {
            return !isnan[has](+o);
        }
        if (type == "array") {
            return o instanceof Array;
        }
        return  (type == "null" && o === null) ||
            (type == typeof o && o !== null) ||
            (type == "object" && o === Object(o)) ||
            (type == "array" && Array.isArray && Array.isArray(o)) ||
            objectToString.call(o).slice(8, -1).toLowerCase() == type;
    };

    function clone(obj) {
        if (typeof obj == "function" || Object(obj) !== obj) {
            return obj;
        }
        var res = new obj.constructor;
        for (var key in obj) if (obj[has](key)) {
            res[key] = clone(obj[key]);
        }
        return res;
    }

    /*\
     * Raphael.angle
     [ method ]
     **
     * Returns angle between two or three points
     > Parameters
     - x1 (number) x coord of first point
     - y1 (number) y coord of first point
     - x2 (number) x coord of second point
     - y2 (number) y coord of second point
     - x3 (number) #optional x coord of third point
     - y3 (number) #optional y coord of third point
     = (number) angle in degrees.
     \*/
    R.angle = function (x1, y1, x2, y2, x3, y3) {
        if (x3 == null) {
            var x = x1 - x2,
                y = y1 - y2;
            if (!x && !y) {
                return 0;
            }
            return (180 + math.atan2(-y, -x) * 180 / PI + 360) % 360;
        } else {
            return R.angle(x1, y1, x3, y3) - R.angle(x2, y2, x3, y3);
        }
    };
    /*\
     * Raphael.rad
     [ method ]
     **
     * Transform angle to radians
     > Parameters
     - deg (number) angle in degrees
     = (number) angle in radians.
     \*/
    R.rad = function (deg) {
        return deg % 360 * PI / 180;
    };
    /*\
     * Raphael.deg
     [ method ]
     **
     * Transform angle to degrees
     > Parameters
     - rad (number) angle in radians
     = (number) angle in degrees.
     \*/
    R.deg = function (rad) {
        return Math.round ((rad * 180 / PI% 360)* 1000) / 1000;
    };
    /*\
     * Raphael.snapTo
     [ method ]
     **
     * Snaps given value to given grid.
     > Parameters
     - values (array|number) given array of values or step of the grid
     - value (number) value to adjust
     - tolerance (number) #optional tolerance for snapping. Default is `10`.
     = (number) adjusted value.
     \*/
    R.snapTo = function (values, value, tolerance) {
        tolerance = R.is(tolerance, "finite") ? tolerance : 10;
        if (R.is(values, array)) {
            var i = values.length;
            while (i--) if (abs(values[i] - value) <= tolerance) {
                return values[i];
            }
        } else {
            values = +values;
            var rem = value % values;
            if (rem < tolerance) {
                return value - rem;
            }
            if (rem > values - tolerance) {
                return value - rem + values;
            }
        }
        return value;
    };

    /*\
     * Raphael.createUUID
     [ method ]
     **
     * Returns RFC4122, version 4 ID
     \*/
    var createUUID = R.createUUID = (function (uuidRegEx, uuidReplacer) {
        return function () {
            return "xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx".replace(uuidRegEx, uuidReplacer).toUpperCase();
        };
    })(/[xy]/g, function (c) {
        var r = math.random() * 16 | 0,
            v = c == "x" ? r : (r & 3 | 8);
        return v.toString(16);
    });

    /*\
     * Raphael.setWindow
     [ method ]
     **
     * Used when you need to draw in `&lt;iframe>`. Switched window to the iframe one.
     > Parameters
     - newwin (window) new window object
     \*/
    R.setWindow = function (newwin) {
        eve("raphael.setWindow", R, g.win, newwin);
        g.win = newwin;
        g.doc = g.win.document;
        if (R._engine.initWin) {
            R._engine.initWin(g.win);
        }
    };
    var toHex = function (color) {
            if (R.vml) {
                // http://dean.edwards.name/weblog/2009/10/convert-any-colour-value-to-hex-in-msie/
                var trim = /^\s+|\s+$/g;
                var bod;
                try {
                    var docum = new ActiveXObject("htmlfile");
                    docum.write("<body>");
                    docum.close();
                    bod = docum.body;
                } catch(e) {
                    bod = createPopup().document.body;
                }
                var range = bod.createTextRange();
                toHex = cacher(function (color) {
                    try {
                        bod.style.color = Str(color).replace(trim, E);
                        var value = range.queryCommandValue("ForeColor");
                        value = ((value & 255) << 16) | (value & 65280) | ((value & 16711680) >>> 16);
                        return "#" + ("000000" + value.toString(16)).slice(-6);
                    } catch(e) {
                        return "none";
                    }
                });
            } else {
                var i = g.doc.createElement("i");
                i.title = "Rapha\xebl Colour Picker";
                i.style.display = "none";
                g.doc.body.appendChild(i);
                toHex = cacher(function (color) {
                    i.style.color = color;
                    return g.doc.defaultView.getComputedStyle(i, E).getPropertyValue("color");
                });
            }
            return toHex(color);
        },
        hsbtoString = function () {
            return "hsb(" + [this.h, this.s, this.b] + ")";
        },
        hsltoString = function () {
            return "hsl(" + [this.h, this.s, this.l] + ")";
        },
        rgbtoString = function () {
            return this.hex;
        },
        prepareRGB = function (r, g, b) {
            if (g == null && R.is(r, "object") && "r" in r && "g" in r && "b" in r) {
                b = r.b;
                g = r.g;
                r = r.r;
            }
            if (g == null && R.is(r, string)) {
                var clr = R.getRGB(r);
                r = clr.r;
                g = clr.g;
                b = clr.b;
            }
            if (r > 1 || g > 1 || b > 1) {
                r /= 255;
                g /= 255;
                b /= 255;
            }

            return [r, g, b];
        },
        packageRGB = function (r, g, b, o) {
            r *= 255;
            g *= 255;
            b *= 255;
            var rgb = {
                r: r,
                g: g,
                b: b,
                hex: R.rgb(r, g, b),
                toString: rgbtoString
            };
            R.is(o, "finite") && (rgb.opacity = o);
            return rgb;
        };

    /*\
     * Raphael.color
     [ method ]
     **
     * Parses the color string and returns object with all values for the given color.
     > Parameters
     - clr (string) color string in one of the supported formats (see @Raphael.getRGB)
     = (object) Combined RGB & HSB object in format:
     o {
     o     r (number) red,
     o     g (number) green,
     o     b (number) blue,
     o     hex (string) color in HTML/CSS format: #••••••,
     o     error (boolean) `true` if string can’t be parsed,
     o     h (number) hue,
     o     s (number) saturation,
     o     v (number) value (brightness),
     o     l (number) lightness
     o }
     \*/
    R.color = function (clr) {
        var rgb;
        if (R.is(clr, "object") && "h" in clr && "s" in clr && "b" in clr) {
            rgb = R.hsb2rgb(clr);
            clr.r = rgb.r;
            clr.g = rgb.g;
            clr.b = rgb.b;
            clr.hex = rgb.hex;
        } else if (R.is(clr, "object") && "h" in clr && "s" in clr && "l" in clr) {
            rgb = R.hsl2rgb(clr);
            clr.r = rgb.r;
            clr.g = rgb.g;
            clr.b = rgb.b;
            clr.hex = rgb.hex;
        } else {
            if (R.is(clr, "string")) {
                clr = R.getRGB(clr);
            }
            if (R.is(clr, "object") && "r" in clr && "g" in clr && "b" in clr) {
                rgb = R.rgb2hsl(clr);
                clr.h = rgb.h;
                clr.s = rgb.s;
                clr.l = rgb.l;
                rgb = R.rgb2hsb(clr);
                clr.v = rgb.b;
            } else {
                clr = {hex: "none"};
                clr.r = clr.g = clr.b = clr.h = clr.s = clr.v = clr.l = -1;
            }
        }
        clr.toString = rgbtoString;
        return clr;
    };
    /*\
     * Raphael.hsb2rgb
     [ method ]
     **
     * Converts HSB values to RGB object.
     > Parameters
     - h (number) hue
     - s (number) saturation
     - v (number) value or brightness
     = (object) RGB object in format:
     o {
     o     r (number) red,
     o     g (number) green,
     o     b (number) blue,
     o     hex (string) color in HTML/CSS format: #••••••
     o }
     \*/
    R.hsb2rgb = function (h, s, v, o) {
        if (this.is(h, "object") && "h" in h && "s" in h && "b" in h) {
            v = h.b;
            s = h.s;
            o = h.o;
            h = h.h;
        }
        h *= 360;
        var R, G, B, X, C;
        h = (h % 360) / 60;
        C = v * s;
        X = C * (1 - abs(h % 2 - 1));
        R = G = B = v - C;

        h = ~~h;
        R += [C, X, 0, 0, X, C][h];
        G += [X, C, C, X, 0, 0][h];
        B += [0, 0, X, C, C, X][h];
        return packageRGB(R, G, B, o);
    };
    /*\
     * Raphael.hsl2rgb
     [ method ]
     **
     * Converts HSL values to RGB object.
     > Parameters
     - h (number) hue
     - s (number) saturation
     - l (number) luminosity
     = (object) RGB object in format:
     o {
     o     r (number) red,
     o     g (number) green,
     o     b (number) blue,
     o     hex (string) color in HTML/CSS format: #••••••
     o }
     \*/
    R.hsl2rgb = function (h, s, l, o) {
        if (this.is(h, "object") && "h" in h && "s" in h && "l" in h) {
            l = h.l;
            s = h.s;
            h = h.h;
        }
        if (h > 1 || s > 1 || l > 1) {
            h /= 360;
            s /= 100;
            l /= 100;
        }
        h *= 360;
        var R, G, B, X, C;
        h = (h % 360) / 60;
        C = 2 * s * (l < .5 ? l : 1 - l);
        X = C * (1 - abs(h % 2 - 1));
        R = G = B = l - C / 2;

        h = ~~h;
        R += [C, X, 0, 0, X, C][h];
        G += [X, C, C, X, 0, 0][h];
        B += [0, 0, X, C, C, X][h];
        return packageRGB(R, G, B, o);
    };
    /*\
     * Raphael.rgb2hsb
     [ method ]
     **
     * Converts RGB values to HSB object.
     > Parameters
     - r (number) red
     - g (number) green
     - b (number) blue
     = (object) HSB object in format:
     o {
     o     h (number) hue
     o     s (number) saturation
     o     b (number) brightness
     o }
     \*/
    R.rgb2hsb = function (r, g, b) {
        b = prepareRGB(r, g, b);
        r = b[0];
        g = b[1];
        b = b[2];

        var H, S, V, C;
        V = mmax(r, g, b);
        C = V - mmin(r, g, b);
        H = (C == 0 ? null :
                V == r ? (g - b) / C :
                    V == g ? (b - r) / C + 2 :
                    (r - g) / C + 4
        );
        H = ((H + 360) % 6) * 60 / 360;
        S = C == 0 ? 0 : C / V;
        return {h: H, s: S, b: V, toString: hsbtoString};
    };
    /*\
     * Raphael.rgb2hsl
     [ method ]
     **
     * Converts RGB values to HSL object.
     > Parameters
     - r (number) red
     - g (number) green
     - b (number) blue
     = (object) HSL object in format:
     o {
     o     h (number) hue
     o     s (number) saturation
     o     l (number) luminosity
     o }
     \*/
    R.rgb2hsl = function (r, g, b) {
        b = prepareRGB(r, g, b);
        r = b[0];
        g = b[1];
        b = b[2];

        var H, S, L, M, m, C;
        M = mmax(r, g, b);
        m = mmin(r, g, b);
        C = M - m;
        H = (C == 0 ? null :
            M == r ? (g - b) / C :
                M == g ? (b - r) / C + 2 :
                (r - g) / C + 4);
        H = ((H + 360) % 6) * 60 / 360;
        L = (M + m) / 2;
        S = (C == 0 ? 0 :
            L < .5 ? C / (2 * L) :
            C / (2 - 2 * L));
        return {h: H, s: S, l: L, toString: hsltoString};
    };
    R._path2string = function () {
        return this.join(",").replace(p2s, "$1");
    };
    function repush(array, item) {
        for (var i = 0, ii = array.length; i < ii; i++) if (array[i] === item) {
            return array.push(array.splice(i, 1)[0]);
        }
    }
    function cacher(f, scope, postprocessor) {
        function newf() {
            var arg = Array.prototype.slice.call(arguments, 0),
                args = arg.join("\u2400"),
                cache = newf.cache = newf.cache || {},
                count = newf.count = newf.count || [];
            if (cache[has](args)) {
                repush(count, args);
                return postprocessor ? postprocessor(cache[args]) : cache[args];
            }
            count.length >= 1e3 && delete cache[count.shift()];
            count.push(args);
            cache[args] = f[apply](scope, arg);
            return postprocessor ? postprocessor(cache[args]) : cache[args];
        }
        return newf;
    }

    var preload = R._preload = function (src, f) {
        var img = g.doc.createElement("img");
        img.style.cssText = "position:absolute;left:-9999em;top:-9999em";
        img.onload = function () {
            f.call(this);
            this.onload = null;
            g.doc.body.removeChild(this);
        };
        img.onerror = function () {
            g.doc.body.removeChild(this);
        };
        g.doc.body.appendChild(img);
        img.src = src;
    };

    function clrToString() {
        return this.hex;
    }

    /*\
     * Raphael.getRGB
     [ method ]
     **
     * Parses colour string as RGB object
     > Parameters
     - colour (string) colour string in one of formats:
     # <ul>
     #     <li>Colour name (“<code>red</code>”, “<code>green</code>”, “<code>cornflowerblue</code>”, etc)</li>
     #     <li>#••• — shortened HTML colour: (“<code>#000</code>”, “<code>#fc0</code>”, etc)</li>
     #     <li>#•••••• — full length HTML colour: (“<code>#000000</code>”, “<code>#bd2300</code>”)</li>
     #     <li>rgb(•••, •••, •••) — red, green and blue channels’ values: (“<code>rgb(200,&nbsp;100,&nbsp;0)</code>”)</li>
     #     <li>rgb(•••%, •••%, •••%) — same as above, but in %: (“<code>rgb(100%,&nbsp;175%,&nbsp;0%)</code>”)</li>
     #     <li>hsb(•••, •••, •••) — hue, saturation and brightness values: (“<code>hsb(0.5,&nbsp;0.25,&nbsp;1)</code>”)</li>
     #     <li>hsb(•••%, •••%, •••%) — same as above, but in %</li>
     #     <li>hsl(•••, •••, •••) — same as hsb</li>
     #     <li>hsl(•••%, •••%, •••%) — same as hsb</li>
     # </ul>
     = (object) RGB object in format:
     o {
     o     r (number) red,
     o     g (number) green,
     o     b (number) blue
     o     hex (string) color in HTML/CSS format: #••••••,
     o     error (boolean) true if string can’t be parsed
     o }
     \*/
    R.getRGB = cacher(function (colour) {
        if (!colour || !!((colour = Str(colour)).indexOf("-") + 1)) {
            return {r: -1, g: -1, b: -1, hex: "none", error: 1, toString: clrToString};
        }
        if (colour == "none") {
            return {r: -1, g: -1, b: -1, hex: "none", toString: clrToString};
        }
        !(hsrg[has](colour.toLowerCase().substring(0, 2)) || colour.charAt() == "#") && (colour = toHex(colour));
        var res,
            red,
            green,
            blue,
            opacity,
            t,
            values,
            rgb = colour.match(colourRegExp);
        if (rgb) {
            if (rgb[2]) {
                blue = toInt(rgb[2].substring(5), 16);
                green = toInt(rgb[2].substring(3, 5), 16);
                red = toInt(rgb[2].substring(1, 3), 16);
            }
            if (rgb[3]) {
                blue = toInt((t = rgb[3].charAt(3)) + t, 16);
                green = toInt((t = rgb[3].charAt(2)) + t, 16);
                red = toInt((t = rgb[3].charAt(1)) + t, 16);
            }
            if (rgb[4]) {
                values = rgb[4][split](commaSpaces);
                red = toFloat(values[0]);
                values[0].slice(-1) == "%" && (red *= 2.55);
                green = toFloat(values[1]);
                values[1].slice(-1) == "%" && (green *= 2.55);
                blue = toFloat(values[2]);
                values[2].slice(-1) == "%" && (blue *= 2.55);
                rgb[1].toLowerCase().slice(0, 4) == "rgba" && (opacity = toFloat(values[3]));
                values[3] && values[3].slice(-1) == "%" && (opacity /= 100);
            }
            if (rgb[5]) {
                values = rgb[5][split](commaSpaces);
                red = toFloat(values[0]);
                values[0].slice(-1) == "%" && (red *= 2.55);
                green = toFloat(values[1]);
                values[1].slice(-1) == "%" && (green *= 2.55);
                blue = toFloat(values[2]);
                values[2].slice(-1) == "%" && (blue *= 2.55);
                (values[0].slice(-3) == "deg" || values[0].slice(-1) == "\xb0") && (red /= 360);
                rgb[1].toLowerCase().slice(0, 4) == "hsba" && (opacity = toFloat(values[3]));
                values[3] && values[3].slice(-1) == "%" && (opacity /= 100);
                return R.hsb2rgb(red, green, blue, opacity);
            }
            if (rgb[6]) {
                values = rgb[6][split](commaSpaces);
                red = toFloat(values[0]);
                values[0].slice(-1) == "%" && (red *= 2.55);
                green = toFloat(values[1]);
                values[1].slice(-1) == "%" && (green *= 2.55);
                blue = toFloat(values[2]);
                values[2].slice(-1) == "%" && (blue *= 2.55);
                (values[0].slice(-3) == "deg" || values[0].slice(-1) == "\xb0") && (red /= 360);
                rgb[1].toLowerCase().slice(0, 4) == "hsla" && (opacity = toFloat(values[3]));
                values[3] && values[3].slice(-1) == "%" && (opacity /= 100);
                return R.hsl2rgb(red, green, blue, opacity);
            }
            rgb = {r: red, g: green, b: blue, toString: clrToString};
            rgb.hex = "#" + (16777216 | blue | (green << 8) | (red << 16)).toString(16).slice(1);
            R.is(opacity, "finite") && (rgb.opacity = opacity);
            return rgb;
        }
        return {r: -1, g: -1, b: -1, hex: "none", error: 1, toString: clrToString};
    }, R);
    /*\
     * Raphael.hsb
     [ method ]
     **
     * Converts HSB values to hex representation of the colour.
     > Parameters
     - h (number) hue
     - s (number) saturation
     - b (number) value or brightness
     = (string) hex representation of the colour.
     \*/
    R.hsb = cacher(function (h, s, b) {
        return R.hsb2rgb(h, s, b).hex;
    });
    /*\
     * Raphael.hsl
     [ method ]
     **
     * Converts HSL values to hex representation of the colour.
     > Parameters
     - h (number) hue
     - s (number) saturation
     - l (number) luminosity
     = (string) hex representation of the colour.
     \*/
    R.hsl = cacher(function (h, s, l) {
        return R.hsl2rgb(h, s, l).hex;
    });
    /*\
     * Raphael.rgb
     [ method ]
     **
     * Converts RGB values to hex representation of the colour.
     > Parameters
     - r (number) red
     - g (number) green
     - b (number) blue
     = (string) hex representation of the colour.
     \*/
    R.rgb = cacher(function (r, g, b) {
        function round(x) { return (x + 0.5) | 0; }
        return "#" + (16777216 | round(b) | (round(g) << 8) | (round(r) << 16)).toString(16).slice(1);
    });
    /*\
     * Raphael.getColor
     [ method ]
     **
     * On each call returns next colour in the spectrum. To reset it back to red call @Raphael.getColor.reset
     > Parameters
     - value (number) #optional brightness, default is `0.75`
     = (string) hex representation of the colour.
     \*/
    R.getColor = function (value) {
        var start = this.getColor.start = this.getColor.start || {h: 0, s: 1, b: value || .75},
            rgb = this.hsb2rgb(start.h, start.s, start.b);
        start.h += .075;
        if (start.h > 1) {
            start.h = 0;
            start.s -= .2;
            start.s <= 0 && (this.getColor.start = {h: 0, s: 1, b: start.b});
        }
        return rgb.hex;
    };
    /*\
     * Raphael.getColor.reset
     [ method ]
     **
     * Resets spectrum position for @Raphael.getColor back to red.
     \*/
    R.getColor.reset = function () {
        delete this.start;
    };

    // http://schepers.cc/getting-to-the-point
    function catmullRom2bezier(crp, z) {
        var d = [];
        for (var i = 0, iLen = crp.length; iLen - 2 * !z > i; i += 2) {
            var p = [
                {x: +crp[i - 2], y: +crp[i - 1]},
                {x: +crp[i],     y: +crp[i + 1]},
                {x: +crp[i + 2], y: +crp[i + 3]},
                {x: +crp[i + 4], y: +crp[i + 5]}
            ];
            if (z) {
                if (!i) {
                    p[0] = {x: +crp[iLen - 2], y: +crp[iLen - 1]};
                } else if (iLen - 4 == i) {
                    p[3] = {x: +crp[0], y: +crp[1]};
                } else if (iLen - 2 == i) {
                    p[2] = {x: +crp[0], y: +crp[1]};
                    p[3] = {x: +crp[2], y: +crp[3]};
                }
            } else {
                if (iLen - 4 == i) {
                    p[3] = p[2];
                } else if (!i) {
                    p[0] = {x: +crp[i], y: +crp[i + 1]};
                }
            }
            d.push(["C",
                (-p[0].x + 6 * p[1].x + p[2].x) / 6,
                (-p[0].y + 6 * p[1].y + p[2].y) / 6,
                (p[1].x + 6 * p[2].x - p[3].x) / 6,
                (p[1].y + 6*p[2].y - p[3].y) / 6,
                p[2].x,
                p[2].y
            ]);
        }

        return d;
    }
    /*\
     * Raphael.parsePathString
     [ method ]
     **
     * Utility method
     **
     * Parses given path string into an array of arrays of path segments.
     > Parameters
     - pathString (string|array) path string or array of segments (in the last case it will be returned straight away)
     = (array) array of segments.
     \*/
    R.parsePathString = function (pathString) {
        if (!pathString) {
            return null;
        }
        var pth = paths(pathString);
        if (pth.arr) {
            return pathClone(pth.arr);
        }

        var paramCounts = {a: 7, c: 6, h: 1, l: 2, m: 2, r: 4, q: 4, s: 4, t: 2, v: 1, z: 0},
            data = [];
        if (R.is(pathString, array) && R.is(pathString[0], array)) { // rough assumption
            data = pathClone(pathString);
        }
        if (!data.length) {
            Str(pathString).replace(pathCommand, function (a, b, c) {
                var params = [],
                    name = b.toLowerCase();
                c.replace(pathValues, function (a, b) {
                    b && params.push(+b);
                });
                if (name == "m" && params.length > 2) {
                    data.push([b][concat](params.splice(0, 2)));
                    name = "l";
                    b = b == "m" ? "l" : "L";
                }
                if (name == "r") {
                    data.push([b][concat](params));
                } else while (params.length >= paramCounts[name]) {
                    data.push([b][concat](params.splice(0, paramCounts[name])));
                    if (!paramCounts[name]) {
                        break;
                    }
                }
            });
        }
        data.toString = R._path2string;
        pth.arr = pathClone(data);
        return data;
    };
    /*\
     * Raphael.parseTransformString
     [ method ]
     **
     * Utility method
     **
     * Parses given path string into an array of transformations.
     > Parameters
     - TString (string|array) transform string or array of transformations (in the last case it will be returned straight away)
     = (array) array of transformations.
     \*/
    R.parseTransformString = cacher(function (TString) {
        if (!TString) {
            return null;
        }
        var paramCounts = {r: 3, s: 4, t: 2, m: 6},
            data = [];
        if (R.is(TString, array) && R.is(TString[0], array)) { // rough assumption
            data = pathClone(TString);
        }
        if (!data.length) {
            Str(TString).replace(tCommand, function (a, b, c) {
                var params = [],
                    name = lowerCase.call(b);
                c.replace(pathValues, function (a, b) {
                    b && params.push(+b);
                });
                data.push([b][concat](params));
            });
        }
        data.toString = R._path2string;
        return data;
    });
    // PATHS
    var paths = function (ps) {
        var p = paths.ps = paths.ps || {};
        if (p[ps]) {
            p[ps].sleep = 100;
        } else {
            p[ps] = {
                sleep: 100
            };
        }
        setTimeout(function () {
            for (var key in p) if (p[has](key) && key != ps) {
                p[key].sleep--;
                !p[key].sleep && delete p[key];
            }
        });
        return p[ps];
    };
    /*\
     * Raphael.findDotsAtSegment
     [ method ]
     **
     * Utility method
     **
     * Find dot coordinates on the given cubic bezier curve at the given t.
     > Parameters
     - p1x (number) x of the first point of the curve
     - p1y (number) y of the first point of the curve
     - c1x (number) x of the first anchor of the curve
     - c1y (number) y of the first anchor of the curve
     - c2x (number) x of the second anchor of the curve
     - c2y (number) y of the second anchor of the curve
     - p2x (number) x of the second point of the curve
     - p2y (number) y of the second point of the curve
     - t (number) position on the curve (0..1)
     = (object) point information in format:
     o {
     o     x: (number) x coordinate of the point
     o     y: (number) y coordinate of the point
     o     m: {
     o         x: (number) x coordinate of the left anchor
     o         y: (number) y coordinate of the left anchor
     o     }
     o     n: {
     o         x: (number) x coordinate of the right anchor
     o         y: (number) y coordinate of the right anchor
     o     }
     o     start: {
     o         x: (number) x coordinate of the start of the curve
     o         y: (number) y coordinate of the start of the curve
     o     }
     o     end: {
     o         x: (number) x coordinate of the end of the curve
     o         y: (number) y coordinate of the end of the curve
     o     }
     o     alpha: (number) angle of the curve derivative at the point
     o }
     \*/
    R.findDotsAtSegment = function (p1x, p1y, c1x, c1y, c2x, c2y, p2x, p2y, t) {
        var t1 = 1 - t,
            t13 = pow(t1, 3),
            t12 = pow(t1, 2),
            t2 = t * t,
            t3 = t2 * t,
            x = t13 * p1x + t12 * 3 * t * c1x + t1 * 3 * t * t * c2x + t3 * p2x,
            y = t13 * p1y + t12 * 3 * t * c1y + t1 * 3 * t * t * c2y + t3 * p2y,
            mx = p1x + 2 * t * (c1x - p1x) + t2 * (c2x - 2 * c1x + p1x),
            my = p1y + 2 * t * (c1y - p1y) + t2 * (c2y - 2 * c1y + p1y),
            nx = c1x + 2 * t * (c2x - c1x) + t2 * (p2x - 2 * c2x + c1x),
            ny = c1y + 2 * t * (c2y - c1y) + t2 * (p2y - 2 * c2y + c1y),
            ax = t1 * p1x + t * c1x,
            ay = t1 * p1y + t * c1y,
            cx = t1 * c2x + t * p2x,
            cy = t1 * c2y + t * p2y,
            alpha = (90 - math.atan2(mx - nx, my - ny) * 180 / PI);
        (mx > nx || my < ny) && (alpha += 180);
        return {
            x: x,
            y: y,
            m: {x: mx, y: my},
            n: {x: nx, y: ny},
            start: {x: ax, y: ay},
            end: {x: cx, y: cy},
            alpha: alpha
        };
    };
    /*\
     * Raphael.bezierBBox
     [ method ]
     **
     * Utility method
     **
     * Return bounding box of a given cubic bezier curve
     > Parameters
     - p1x (number) x of the first point of the curve
     - p1y (number) y of the first point of the curve
     - c1x (number) x of the first anchor of the curve
     - c1y (number) y of the first anchor of the curve
     - c2x (number) x of the second anchor of the curve
     - c2y (number) y of the second anchor of the curve
     - p2x (number) x of the second point of the curve
     - p2y (number) y of the second point of the curve
     * or
     - bez (array) array of six points for bezier curve
     = (object) point information in format:
     o {
     o     min: {
     o         x: (number) x coordinate of the left point
     o         y: (number) y coordinate of the top point
     o     }
     o     max: {
     o         x: (number) x coordinate of the right point
     o         y: (number) y coordinate of the bottom point
     o     }
     o }
     \*/
    R.bezierBBox = function (p1x, p1y, c1x, c1y, c2x, c2y, p2x, p2y) {
        if (!R.is(p1x, "array")) {
            p1x = [p1x, p1y, c1x, c1y, c2x, c2y, p2x, p2y];
        }
        var bbox = curveDim.apply(null, p1x);
        return {
            x: bbox.min.x,
            y: bbox.min.y,
            x2: bbox.max.x,
            y2: bbox.max.y,
            width: bbox.max.x - bbox.min.x,
            height: bbox.max.y - bbox.min.y
        };
    };
    /*\
     * Raphael.isPointInsideBBox
     [ method ]
     **
     * Utility method
     **
     * Returns `true` if given point is inside bounding boxes.
     > Parameters
     - bbox (string) bounding box
     - x (string) x coordinate of the point
     - y (string) y coordinate of the point
     = (boolean) `true` if point inside
     \*/
    R.isPointInsideBBox = function (bbox, x, y) {
        return x >= bbox.x && x <= bbox.x2 && y >= bbox.y && y <= bbox.y2;
    };
    /*\
     * Raphael.isBBoxIntersect
     [ method ]
     **
     * Utility method
     **
     * Returns `true` if two bounding boxes intersect
     > Parameters
     - bbox1 (string) first bounding box
     - bbox2 (string) second bounding box
     = (boolean) `true` if they intersect
     \*/
    R.isBBoxIntersect = function (bbox1, bbox2) {
        var i = R.isPointInsideBBox;
        return i(bbox2, bbox1.x, bbox1.y)
            || i(bbox2, bbox1.x2, bbox1.y)
            || i(bbox2, bbox1.x, bbox1.y2)
            || i(bbox2, bbox1.x2, bbox1.y2)
            || i(bbox1, bbox2.x, bbox2.y)
            || i(bbox1, bbox2.x2, bbox2.y)
            || i(bbox1, bbox2.x, bbox2.y2)
            || i(bbox1, bbox2.x2, bbox2.y2)
            || (bbox1.x < bbox2.x2 && bbox1.x > bbox2.x || bbox2.x < bbox1.x2 && bbox2.x > bbox1.x)
            && (bbox1.y < bbox2.y2 && bbox1.y > bbox2.y || bbox2.y < bbox1.y2 && bbox2.y > bbox1.y);
    };
    function base3(t, p1, p2, p3, p4) {
        var t1 = -3 * p1 + 9 * p2 - 9 * p3 + 3 * p4,
            t2 = t * t1 + 6 * p1 - 12 * p2 + 6 * p3;
        return t * t2 - 3 * p1 + 3 * p2;
    }
    function bezlen(x1, y1, x2, y2, x3, y3, x4, y4, z) {
        if (z == null) {
            z = 1;
        }
        z = z > 1 ? 1 : z < 0 ? 0 : z;
        var z2 = z / 2,
            n = 12,
            Tvalues = [-0.1252,0.1252,-0.3678,0.3678,-0.5873,0.5873,-0.7699,0.7699,-0.9041,0.9041,-0.9816,0.9816],
            Cvalues = [0.2491,0.2491,0.2335,0.2335,0.2032,0.2032,0.1601,0.1601,0.1069,0.1069,0.0472,0.0472],
            sum = 0;
        for (var i = 0; i < n; i++) {
            var ct = z2 * Tvalues[i] + z2,
                xbase = base3(ct, x1, x2, x3, x4),
                ybase = base3(ct, y1, y2, y3, y4),
                comb = xbase * xbase + ybase * ybase;
            sum += Cvalues[i] * math.sqrt(comb);
        }
        return z2 * sum;
    }
    function getTatLen(x1, y1, x2, y2, x3, y3, x4, y4, ll) {
        if (ll < 0 || bezlen(x1, y1, x2, y2, x3, y3, x4, y4) < ll) {
            return;
        }
        var t = 1,
            step = t / 2,
            t2 = t - step,
            l,
            e = .01;
        l = bezlen(x1, y1, x2, y2, x3, y3, x4, y4, t2);
        while (abs(l - ll) > e) {
            step /= 2;
            t2 += (l < ll ? 1 : -1) * step;
            l = bezlen(x1, y1, x2, y2, x3, y3, x4, y4, t2);
        }
        return t2;
    }
    function intersect(x1, y1, x2, y2, x3, y3, x4, y4) {
        if (
            mmax(x1, x2) < mmin(x3, x4) ||
            mmin(x1, x2) > mmax(x3, x4) ||
            mmax(y1, y2) < mmin(y3, y4) ||
            mmin(y1, y2) > mmax(y3, y4)
        ) {
            return;
        }
        var nx = (x1 * y2 - y1 * x2) * (x3 - x4) - (x1 - x2) * (x3 * y4 - y3 * x4),
            ny = (x1 * y2 - y1 * x2) * (y3 - y4) - (y1 - y2) * (x3 * y4 - y3 * x4),
            denominator = (x1 - x2) * (y3 - y4) - (y1 - y2) * (x3 - x4);

        if (!denominator) {
            return;
        }
        var px = nx / denominator,
            py = ny / denominator,
            px2 = +px.toFixed(2),
            py2 = +py.toFixed(2);
        if (
            px2 < +mmin(x1, x2).toFixed(2) ||
            px2 > +mmax(x1, x2).toFixed(2) ||
            px2 < +mmin(x3, x4).toFixed(2) ||
            px2 > +mmax(x3, x4).toFixed(2) ||
            py2 < +mmin(y1, y2).toFixed(2) ||
            py2 > +mmax(y1, y2).toFixed(2) ||
            py2 < +mmin(y3, y4).toFixed(2) ||
            py2 > +mmax(y3, y4).toFixed(2)
        ) {
            return;
        }
        return {x: px, y: py};
    }
    function inter(bez1, bez2) {
        return interHelper(bez1, bez2);
    }
    function interCount(bez1, bez2) {
        return interHelper(bez1, bez2, 1);
    }
    function interHelper(bez1, bez2, justCount) {
        var bbox1 = R.bezierBBox(bez1),
            bbox2 = R.bezierBBox(bez2);
        if (!R.isBBoxIntersect(bbox1, bbox2)) {
            return justCount ? 0 : [];
        }
        var l1 = bezlen.apply(0, bez1),
            l2 = bezlen.apply(0, bez2),
            n1 = mmax(~~(l1 / 5), 1),
            n2 = mmax(~~(l2 / 5), 1),
            dots1 = [],
            dots2 = [],
            xy = {},
            res = justCount ? 0 : [];
        for (var i = 0; i < n1 + 1; i++) {
            var p = R.findDotsAtSegment.apply(R, bez1.concat(i / n1));
            dots1.push({x: p.x, y: p.y, t: i / n1});
        }
        for (i = 0; i < n2 + 1; i++) {
            p = R.findDotsAtSegment.apply(R, bez2.concat(i / n2));
            dots2.push({x: p.x, y: p.y, t: i / n2});
        }
        for (i = 0; i < n1; i++) {
            for (var j = 0; j < n2; j++) {
                var di = dots1[i],
                    di1 = dots1[i + 1],
                    dj = dots2[j],
                    dj1 = dots2[j + 1],
                    ci = abs(di1.x - di.x) < .001 ? "y" : "x",
                    cj = abs(dj1.x - dj.x) < .001 ? "y" : "x",
                    is = intersect(di.x, di.y, di1.x, di1.y, dj.x, dj.y, dj1.x, dj1.y);
                if (is) {
                    if (xy[is.x.toFixed(4)] == is.y.toFixed(4)) {
                        continue;
                    }
                    xy[is.x.toFixed(4)] = is.y.toFixed(4);
                    var t1 = di.t + abs((is[ci] - di[ci]) / (di1[ci] - di[ci])) * (di1.t - di.t),
                        t2 = dj.t + abs((is[cj] - dj[cj]) / (dj1[cj] - dj[cj])) * (dj1.t - dj.t);
                    if (t1 >= 0 && t1 <= 1.001 && t2 >= 0 && t2 <= 1.001) {
                        if (justCount) {
                            res++;
                        } else {
                            res.push({
                                x: is.x,
                                y: is.y,
                                t1: mmin(t1, 1),
                                t2: mmin(t2, 1)
                            });
                        }
                    }
                }
            }
        }
        return res;
    }
    /*\
     * Raphael.pathIntersection
     [ method ]
     **
     * Utility method
     **
     * Finds intersections of two paths
     > Parameters
     - path1 (string) path string
     - path2 (string) path string
     = (array) dots of intersection
     o [
     o     {
     o         x: (number) x coordinate of the point
     o         y: (number) y coordinate of the point
     o         t1: (number) t value for segment of path1
     o         t2: (number) t value for segment of path2
     o         segment1: (number) order number for segment of path1
     o         segment2: (number) order number for segment of path2
     o         bez1: (array) eight coordinates representing beziér curve for the segment of path1
     o         bez2: (array) eight coordinates representing beziér curve for the segment of path2
     o     }
     o ]
     \*/
    R.pathIntersection = function (path1, path2) {
        return interPathHelper(path1, path2);
    };
    R.pathIntersectionNumber = function (path1, path2) {
        return interPathHelper(path1, path2, 1);
    };
    function interPathHelper(path1, path2, justCount) {
        path1 = R._path2curve(path1);
        path2 = R._path2curve(path2);
        var x1, y1, x2, y2, x1m, y1m, x2m, y2m, bez1, bez2,
            res = justCount ? 0 : [];
        for (var i = 0, ii = path1.length; i < ii; i++) {
            var pi = path1[i];
            if (pi[0] == "M") {
                x1 = x1m = pi[1];
                y1 = y1m = pi[2];
            } else {
                if (pi[0] == "C") {
                    bez1 = [x1, y1].concat(pi.slice(1));
                    x1 = bez1[6];
                    y1 = bez1[7];
                } else {
                    bez1 = [x1, y1, x1, y1, x1m, y1m, x1m, y1m];
                    x1 = x1m;
                    y1 = y1m;
                }
                for (var j = 0, jj = path2.length; j < jj; j++) {
                    var pj = path2[j];
                    if (pj[0] == "M") {
                        x2 = x2m = pj[1];
                        y2 = y2m = pj[2];
                    } else {
                        if (pj[0] == "C") {
                            bez2 = [x2, y2].concat(pj.slice(1));
                            x2 = bez2[6];
                            y2 = bez2[7];
                        } else {
                            bez2 = [x2, y2, x2, y2, x2m, y2m, x2m, y2m];
                            x2 = x2m;
                            y2 = y2m;
                        }
                        var intr = interHelper(bez1, bez2, justCount);
                        if (justCount) {
                            res += intr;
                        } else {
                            for (var k = 0, kk = intr.length; k < kk; k++) {
                                intr[k].segment1 = i;
                                intr[k].segment2 = j;
                                intr[k].bez1 = bez1;
                                intr[k].bez2 = bez2;
                            }
                            res = res.concat(intr);
                        }
                    }
                }
            }
        }
        return res;
    }
    /*\
     * Raphael.isPointInsidePath
     [ method ]
     **
     * Utility method
     **
     * Returns `true` if given point is inside a given closed path.
     > Parameters
     - path (string) path string
     - x (number) x of the point
     - y (number) y of the point
     = (boolean) true, if point is inside the path
     \*/
    R.isPointInsidePath = function (path, x, y) {
        var bbox = R.pathBBox(path);
        return R.isPointInsideBBox(bbox, x, y) &&
            interPathHelper(path, [["M", x, y], ["H", bbox.x2 + 10]], 1) % 2 == 1;
    };
    R._removedFactory = function (methodname) {
        return function () {
            eve("raphael.log", null, "Rapha\xebl: you are calling to method \u201c" + methodname + "\u201d of removed object", methodname);
        };
    };
    /*\
     * Raphael.pathBBox
     [ method ]
     **
     * Utility method
     **
     * Return bounding box of a given path
     > Parameters
     - path (string) path string
     = (object) bounding box
     o {
     o     x: (number) x coordinate of the left top point of the box
     o     y: (number) y coordinate of the left top point of the box
     o     x2: (number) x coordinate of the right bottom point of the box
     o     y2: (number) y coordinate of the right bottom point of the box
     o     width: (number) width of the box
     o     height: (number) height of the box
     o     cx: (number) x coordinate of the center of the box
     o     cy: (number) y coordinate of the center of the box
     o }
     \*/
    var pathDimensions = R.pathBBox = function (path) {
            var pth = paths(path);
            if (pth.bbox) {
                return clone(pth.bbox);
            }
            if (!path) {
                return {x: 0, y: 0, width: 0, height: 0, x2: 0, y2: 0};
            }
            path = path2curve(path);
            var x = 0,
                y = 0,
                X = [],
                Y = [],
                p;
            for (var i = 0, ii = path.length; i < ii; i++) {
                p = path[i];
                if (p[0] == "M") {
                    x = p[1];
                    y = p[2];
                    X.push(x);
                    Y.push(y);
                } else {
                    var dim = curveDim(x, y, p[1], p[2], p[3], p[4], p[5], p[6]);
                    X = X[concat](dim.min.x, dim.max.x);
                    Y = Y[concat](dim.min.y, dim.max.y);
                    x = p[5];
                    y = p[6];
                }
            }
            var xmin = mmin[apply](0, X),
                ymin = mmin[apply](0, Y),
                xmax = mmax[apply](0, X),
                ymax = mmax[apply](0, Y),
                width = xmax - xmin,
                height = ymax - ymin,
                bb = {
                    x: xmin,
                    y: ymin,
                    x2: xmax,
                    y2: ymax,
                    width: width,
                    height: height,
                    cx: xmin + width / 2,
                    cy: ymin + height / 2
                };
            pth.bbox = clone(bb);
            return bb;
        },
        pathClone = function (pathArray) {
            var res = clone(pathArray);
            res.toString = R._path2string;
            return res;
        },
        pathToRelative = R._pathToRelative = function (pathArray) {
            var pth = paths(pathArray);
            if (pth.rel) {
                return pathClone(pth.rel);
            }
            if (!R.is(pathArray, array) || !R.is(pathArray && pathArray[0], array)) { // rough assumption
                pathArray = R.parsePathString(pathArray);
            }
            var res = [],
                x = 0,
                y = 0,
                mx = 0,
                my = 0,
                start = 0;
            if (pathArray[0][0] == "M") {
                x = pathArray[0][1];
                y = pathArray[0][2];
                mx = x;
                my = y;
                start++;
                res.push(["M", x, y]);
            }
            for (var i = start, ii = pathArray.length; i < ii; i++) {
                var r = res[i] = [],
                    pa = pathArray[i];
                if (pa[0] != lowerCase.call(pa[0])) {
                    r[0] = lowerCase.call(pa[0]);
                    switch (r[0]) {
                        case "a":
                            r[1] = pa[1];
                            r[2] = pa[2];
                            r[3] = pa[3];
                            r[4] = pa[4];
                            r[5] = pa[5];
                            r[6] = +(pa[6] - x).toFixed(3);
                            r[7] = +(pa[7] - y).toFixed(3);
                            break;
                        case "v":
                            r[1] = +(pa[1] - y).toFixed(3);
                            break;
                        case "m":
                            mx = pa[1];
                            my = pa[2];
                        default:
                            for (var j = 1, jj = pa.length; j < jj; j++) {
                                r[j] = +(pa[j] - ((j % 2) ? x : y)).toFixed(3);
                            }
                    }
                } else {
                    r = res[i] = [];
                    if (pa[0] == "m") {
                        mx = pa[1] + x;
                        my = pa[2] + y;
                    }
                    for (var k = 0, kk = pa.length; k < kk; k++) {
                        res[i][k] = pa[k];
                    }
                }
                var len = res[i].length;
                switch (res[i][0]) {
                    case "z":
                        x = mx;
                        y = my;
                        break;
                    case "h":
                        x += +res[i][len - 1];
                        break;
                    case "v":
                        y += +res[i][len - 1];
                        break;
                    default:
                        x += +res[i][len - 2];
                        y += +res[i][len - 1];
                }
            }
            res.toString = R._path2string;
            pth.rel = pathClone(res);
            return res;
        },
        pathToAbsolute = R._pathToAbsolute = function (pathArray) {
            var pth = paths(pathArray);
            if (pth.abs) {
                return pathClone(pth.abs);
            }
            if (!R.is(pathArray, array) || !R.is(pathArray && pathArray[0], array)) { // rough assumption
                pathArray = R.parsePathString(pathArray);
            }
            if (!pathArray || !pathArray.length) {
                return [["M", 0, 0]];
            }
            var res = [],
                x = 0,
                y = 0,
                mx = 0,
                my = 0,
                start = 0;
            if (pathArray[0][0] == "M") {
                x = +pathArray[0][1];
                y = +pathArray[0][2];
                mx = x;
                my = y;
                start++;
                res[0] = ["M", x, y];
            }
            var crz = pathArray.length == 3 && pathArray[0][0] == "M" && pathArray[1][0].toUpperCase() == "R" && pathArray[2][0].toUpperCase() == "Z";
            for (var r, pa, i = start, ii = pathArray.length; i < ii; i++) {
                res.push(r = []);
                pa = pathArray[i];
                if (pa[0] != upperCase.call(pa[0])) {
                    r[0] = upperCase.call(pa[0]);
                    switch (r[0]) {
                        case "A":
                            r[1] = pa[1];
                            r[2] = pa[2];
                            r[3] = pa[3];
                            r[4] = pa[4];
                            r[5] = pa[5];
                            r[6] = +(pa[6] + x);
                            r[7] = +(pa[7] + y);
                            break;
                        case "V":
                            r[1] = +pa[1] + y;
                            break;
                        case "H":
                            r[1] = +pa[1] + x;
                            break;
                        case "R":
                            var dots = [x, y][concat](pa.slice(1));
                            for (var j = 2, jj = dots.length; j < jj; j++) {
                                dots[j] = +dots[j] + x;
                                dots[++j] = +dots[j] + y;
                            }
                            res.pop();
                            res = res[concat](catmullRom2bezier(dots, crz));
                            break;
                        case "M":
                            mx = +pa[1] + x;
                            my = +pa[2] + y;
                        default:
                            for (j = 1, jj = pa.length; j < jj; j++) {
                                r[j] = +pa[j] + ((j % 2) ? x : y);
                            }
                    }
                } else if (pa[0] == "R") {
                    dots = [x, y][concat](pa.slice(1));
                    res.pop();
                    res = res[concat](catmullRom2bezier(dots, crz));
                    r = ["R"][concat](pa.slice(-2));
                } else {
                    for (var k = 0, kk = pa.length; k < kk; k++) {
                        r[k] = pa[k];
                    }
                }
                switch (r[0]) {
                    case "Z":
                        x = mx;
                        y = my;
                        break;
                    case "H":
                        x = r[1];
                        break;
                    case "V":
                        y = r[1];
                        break;
                    case "M":
                        mx = r[r.length - 2];
                        my = r[r.length - 1];
                    default:
                        x = r[r.length - 2];
                        y = r[r.length - 1];
                }
            }
            res.toString = R._path2string;
            pth.abs = pathClone(res);
            return res;
        },
        l2c = function (x1, y1, x2, y2) {
            return [x1, y1, x2, y2, x2, y2];
        },
        q2c = function (x1, y1, ax, ay, x2, y2) {
            var _13 = 1 / 3,
                _23 = 2 / 3;
            return [
                _13 * x1 + _23 * ax,
                _13 * y1 + _23 * ay,
                _13 * x2 + _23 * ax,
                _13 * y2 + _23 * ay,
                x2,
                y2
            ];
        },
        a2c = function (x1, y1, rx, ry, angle, large_arc_flag, sweep_flag, x2, y2, recursive) {
            // for more information of where this math came from visit:
            // http://www.w3.org/TR/SVG11/implnote.html#ArcImplementationNotes
            var _120 = PI * 120 / 180,
                rad = PI / 180 * (+angle || 0),
                res = [],
                xy,
                rotate = cacher(function (x, y, rad) {
                    var X = x * math.cos(rad) - y * math.sin(rad),
                        Y = x * math.sin(rad) + y * math.cos(rad);
                    return {x: X, y: Y};
                });
            if (!recursive) {
                xy = rotate(x1, y1, -rad);
                x1 = xy.x;
                y1 = xy.y;
                xy = rotate(x2, y2, -rad);
                x2 = xy.x;
                y2 = xy.y;
                var cos = math.cos(PI / 180 * angle),
                    sin = math.sin(PI / 180 * angle),
                    x = (x1 - x2) / 2,
                    y = (y1 - y2) / 2;
                var h = (x * x) / (rx * rx) + (y * y) / (ry * ry);
                if (h > 1) {
                    h = math.sqrt(h);
                    rx = h * rx;
                    ry = h * ry;
                }
                var rx2 = rx * rx,
                    ry2 = ry * ry,
                    k = (large_arc_flag == sweep_flag ? -1 : 1) *
                        math.sqrt(abs((rx2 * ry2 - rx2 * y * y - ry2 * x * x) / (rx2 * y * y + ry2 * x * x))),
                    cx = k * rx * y / ry + (x1 + x2) / 2,
                    cy = k * -ry * x / rx + (y1 + y2) / 2,
                    f1 = math.asin(((y1 - cy) / ry).toFixed(9)),
                    f2 = math.asin(((y2 - cy) / ry).toFixed(9));

                f1 = x1 < cx ? PI - f1 : f1;
                f2 = x2 < cx ? PI - f2 : f2;
                f1 < 0 && (f1 = PI * 2 + f1);
                f2 < 0 && (f2 = PI * 2 + f2);
                if (sweep_flag && f1 > f2) {
                    f1 = f1 - PI * 2;
                }
                if (!sweep_flag && f2 > f1) {
                    f2 = f2 - PI * 2;
                }
            } else {
                f1 = recursive[0];
                f2 = recursive[1];
                cx = recursive[2];
                cy = recursive[3];
            }
            var df = f2 - f1;
            if (abs(df) > _120) {
                var f2old = f2,
                    x2old = x2,
                    y2old = y2;
                f2 = f1 + _120 * (sweep_flag && f2 > f1 ? 1 : -1);
                x2 = cx + rx * math.cos(f2);
                y2 = cy + ry * math.sin(f2);
                res = a2c(x2, y2, rx, ry, angle, 0, sweep_flag, x2old, y2old, [f2, f2old, cx, cy]);
            }
            df = f2 - f1;
            var c1 = math.cos(f1),
                s1 = math.sin(f1),
                c2 = math.cos(f2),
                s2 = math.sin(f2),
                t = math.tan(df / 4),
                hx = 4 / 3 * rx * t,
                hy = 4 / 3 * ry * t,
                m1 = [x1, y1],
                m2 = [x1 + hx * s1, y1 - hy * c1],
                m3 = [x2 + hx * s2, y2 - hy * c2],
                m4 = [x2, y2];
            m2[0] = 2 * m1[0] - m2[0];
            m2[1] = 2 * m1[1] - m2[1];
            if (recursive) {
                return [m2, m3, m4][concat](res);
            } else {
                res = [m2, m3, m4][concat](res).join()[split](",");
                var newres = [];
                for (var i = 0, ii = res.length; i < ii; i++) {
                    newres[i] = i % 2 ? rotate(res[i - 1], res[i], rad).y : rotate(res[i], res[i + 1], rad).x;
                }
                return newres;
            }
        },
        findDotAtSegment = function (p1x, p1y, c1x, c1y, c2x, c2y, p2x, p2y, t) {
            var t1 = 1 - t;
            return {
                x: pow(t1, 3) * p1x + pow(t1, 2) * 3 * t * c1x + t1 * 3 * t * t * c2x + pow(t, 3) * p2x,
                y: pow(t1, 3) * p1y + pow(t1, 2) * 3 * t * c1y + t1 * 3 * t * t * c2y + pow(t, 3) * p2y
            };
        },
        curveDim = cacher(function (p1x, p1y, c1x, c1y, c2x, c2y, p2x, p2y) {
            var a = (c2x - 2 * c1x + p1x) - (p2x - 2 * c2x + c1x),
                b = 2 * (c1x - p1x) - 2 * (c2x - c1x),
                c = p1x - c1x,
                t1 = (-b + math.sqrt(b * b - 4 * a * c)) / 2 / a,
                t2 = (-b - math.sqrt(b * b - 4 * a * c)) / 2 / a,
                y = [p1y, p2y],
                x = [p1x, p2x],
                dot;
            abs(t1) > "1e12" && (t1 = .5);
            abs(t2) > "1e12" && (t2 = .5);
            if (t1 > 0 && t1 < 1) {
                dot = findDotAtSegment(p1x, p1y, c1x, c1y, c2x, c2y, p2x, p2y, t1);
                x.push(dot.x);
                y.push(dot.y);
            }
            if (t2 > 0 && t2 < 1) {
                dot = findDotAtSegment(p1x, p1y, c1x, c1y, c2x, c2y, p2x, p2y, t2);
                x.push(dot.x);
                y.push(dot.y);
            }
            a = (c2y - 2 * c1y + p1y) - (p2y - 2 * c2y + c1y);
            b = 2 * (c1y - p1y) - 2 * (c2y - c1y);
            c = p1y - c1y;
            t1 = (-b + math.sqrt(b * b - 4 * a * c)) / 2 / a;
            t2 = (-b - math.sqrt(b * b - 4 * a * c)) / 2 / a;
            abs(t1) > "1e12" && (t1 = .5);
            abs(t2) > "1e12" && (t2 = .5);
            if (t1 > 0 && t1 < 1) {
                dot = findDotAtSegment(p1x, p1y, c1x, c1y, c2x, c2y, p2x, p2y, t1);
                x.push(dot.x);
                y.push(dot.y);
            }
            if (t2 > 0 && t2 < 1) {
                dot = findDotAtSegment(p1x, p1y, c1x, c1y, c2x, c2y, p2x, p2y, t2);
                x.push(dot.x);
                y.push(dot.y);
            }
            return {
                min: {x: mmin[apply](0, x), y: mmin[apply](0, y)},
                max: {x: mmax[apply](0, x), y: mmax[apply](0, y)}
            };
        }),
        path2curve = R._path2curve = cacher(function (path, path2) {
            var pth = !path2 && paths(path);
            if (!path2 && pth.curve) {
                return pathClone(pth.curve);
            }
            var p = pathToAbsolute(path),
                p2 = path2 && pathToAbsolute(path2),
                attrs = {x: 0, y: 0, bx: 0, by: 0, X: 0, Y: 0, qx: null, qy: null},
                attrs2 = {x: 0, y: 0, bx: 0, by: 0, X: 0, Y: 0, qx: null, qy: null},
                processPath = function (path, d, pcom) {
                    var nx, ny, tq = {T:1, Q:1};
                    if (!path) {
                        return ["C", d.x, d.y, d.x, d.y, d.x, d.y];
                    }
                    !(path[0] in tq) && (d.qx = d.qy = null);
                    switch (path[0]) {
                        case "M":
                            d.X = path[1];
                            d.Y = path[2];
                            break;
                        case "A":
                            path = ["C"][concat](a2c[apply](0, [d.x, d.y][concat](path.slice(1))));
                            break;
                        case "S":
                            if (pcom == "C" || pcom == "S") { // In "S" case we have to take into account, if the previous command is C/S.
                                nx = d.x * 2 - d.bx;          // And reflect the previous
                                ny = d.y * 2 - d.by;          // command's control point relative to the current point.
                            }
                            else {                            // or some else or nothing
                                nx = d.x;
                                ny = d.y;
                            }
                            path = ["C", nx, ny][concat](path.slice(1));
                            break;
                        case "T":
                            if (pcom == "Q" || pcom == "T") { // In "T" case we have to take into account, if the previous command is Q/T.
                                d.qx = d.x * 2 - d.qx;        // And make a reflection similar
                                d.qy = d.y * 2 - d.qy;        // to case "S".
                            }
                            else {                            // or something else or nothing
                                d.qx = d.x;
                                d.qy = d.y;
                            }
                            path = ["C"][concat](q2c(d.x, d.y, d.qx, d.qy, path[1], path[2]));
                            break;
                        case "Q":
                            d.qx = path[1];
                            d.qy = path[2];
                            path = ["C"][concat](q2c(d.x, d.y, path[1], path[2], path[3], path[4]));
                            break;
                        case "L":
                            path = ["C"][concat](l2c(d.x, d.y, path[1], path[2]));
                            break;
                        case "H":
                            path = ["C"][concat](l2c(d.x, d.y, path[1], d.y));
                            break;
                        case "V":
                            path = ["C"][concat](l2c(d.x, d.y, d.x, path[1]));
                            break;
                        case "Z":
                            path = ["C"][concat](l2c(d.x, d.y, d.X, d.Y));
                            break;
                    }
                    return path;
                },
                fixArc = function (pp, i) {
                    if (pp[i].length > 7) {
                        pp[i].shift();
                        var pi = pp[i];
                        while (pi.length) {
                            pcoms1[i]="A"; // if created multiple C:s, their original seg is saved
                            p2 && (pcoms2[i]="A"); // the same as above
                            pp.splice(i++, 0, ["C"][concat](pi.splice(0, 6)));
                        }
                        pp.splice(i, 1);
                        ii = mmax(p.length, p2 && p2.length || 0);
                    }
                },
                fixM = function (path1, path2, a1, a2, i) {
                    if (path1 && path2 && path1[i][0] == "M" && path2[i][0] != "M") {
                        path2.splice(i, 0, ["M", a2.x, a2.y]);
                        a1.bx = 0;
                        a1.by = 0;
                        a1.x = path1[i][1];
                        a1.y = path1[i][2];
                        ii = mmax(p.length, p2 && p2.length || 0);
                    }
                },
                pcoms1 = [], // path commands of original path p
                pcoms2 = [], // path commands of original path p2
                pfirst = "", // temporary holder for original path command
                pcom = ""; // holder for previous path command of original path
            for (var i = 0, ii = mmax(p.length, p2 && p2.length || 0); i < ii; i++) {
                p[i] && (pfirst = p[i][0]); // save current path command

                if (pfirst != "C") // C is not saved yet, because it may be result of conversion
                {
                    pcoms1[i] = pfirst; // Save current path command
                    i && ( pcom = pcoms1[i-1]); // Get previous path command pcom
                }
                p[i] = processPath(p[i], attrs, pcom); // Previous path command is inputted to processPath

                if (pcoms1[i] != "A" && pfirst == "C") pcoms1[i] = "C"; // A is the only command
                // which may produce multiple C:s
                // so we have to make sure that C is also C in original path

                fixArc(p, i); // fixArc adds also the right amount of A:s to pcoms1

                if (p2) { // the same procedures is done to p2
                    p2[i] && (pfirst = p2[i][0]);
                    if (pfirst != "C")
                    {
                        pcoms2[i] = pfirst;
                        i && (pcom = pcoms2[i-1]);
                    }
                    p2[i] = processPath(p2[i], attrs2, pcom);

                    if (pcoms2[i]!="A" && pfirst=="C") pcoms2[i]="C";

                    fixArc(p2, i);
                }
                fixM(p, p2, attrs, attrs2, i);
                fixM(p2, p, attrs2, attrs, i);
                var seg = p[i],
                    seg2 = p2 && p2[i],
                    seglen = seg.length,
                    seg2len = p2 && seg2.length;
                attrs.x = seg[seglen - 2];
                attrs.y = seg[seglen - 1];
                attrs.bx = toFloat(seg[seglen - 4]) || attrs.x;
                attrs.by = toFloat(seg[seglen - 3]) || attrs.y;
                attrs2.bx = p2 && (toFloat(seg2[seg2len - 4]) || attrs2.x);
                attrs2.by = p2 && (toFloat(seg2[seg2len - 3]) || attrs2.y);
                attrs2.x = p2 && seg2[seg2len - 2];
                attrs2.y = p2 && seg2[seg2len - 1];
            }
            if (!p2) {
                pth.curve = pathClone(p);
            }
            return p2 ? [p, p2] : p;
        }, null, pathClone),
        parseDots = R._parseDots = cacher(function (gradient) {
            var dots = [];
            for (var i = 0, ii = gradient.length; i < ii; i++) {
                var dot = {},
                    par = gradient[i].match(/^([^:]*):?([\d\.]*)/);
                dot.color = R.getRGB(par[1]);
                if (dot.color.error) {
                    return null;
                }
                dot.opacity = dot.color.opacity;
                dot.color = dot.color.hex;
                par[2] && (dot.offset = par[2] + "%");
                dots.push(dot);
            }
            for (i = 1, ii = dots.length - 1; i < ii; i++) {
                if (!dots[i].offset) {
                    var start = toFloat(dots[i - 1].offset || 0),
                        end = 0;
                    for (var j = i + 1; j < ii; j++) {
                        if (dots[j].offset) {
                            end = dots[j].offset;
                            break;
                        }
                    }
                    if (!end) {
                        end = 100;
                        j = ii;
                    }
                    end = toFloat(end);
                    var d = (end - start) / (j - i + 1);
                    for (; i < j; i++) {
                        start += d;
                        dots[i].offset = start + "%";
                    }
                }
            }
            return dots;
        }),
        tear = R._tear = function (el, paper) {
            el == paper.top && (paper.top = el.prev);
            el == paper.bottom && (paper.bottom = el.next);
            el.next && (el.next.prev = el.prev);
            el.prev && (el.prev.next = el.next);
        },
        tofront = R._tofront = function (el, paper) {
            if (paper.top === el) {
                return;
            }
            tear(el, paper);
            el.next = null;
            el.prev = paper.top;
            paper.top.next = el;
            paper.top = el;
        },
        toback = R._toback = function (el, paper) {
            if (paper.bottom === el) {
                return;
            }
            tear(el, paper);
            el.next = paper.bottom;
            el.prev = null;
            paper.bottom.prev = el;
            paper.bottom = el;
        },
        insertafter = R._insertafter = function (el, el2, paper) {
            tear(el, paper);
            el2 == paper.top && (paper.top = el);
            el2.next && (el2.next.prev = el);
            el.next = el2.next;
            el.prev = el2;
            el2.next = el;
        },
        insertbefore = R._insertbefore = function (el, el2, paper) {
            tear(el, paper);
            el2 == paper.bottom && (paper.bottom = el);
            el2.prev && (el2.prev.next = el);
            el.prev = el2.prev;
            el2.prev = el;
            el.next = el2;
        },
    /*\
     * Raphael.toMatrix
     [ method ]
     **
     * Utility method
     **
     * Returns matrix of transformations applied to a given path
     > Parameters
     - path (string) path string
     - transform (string|array) transformation string
     = (object) @Matrix
     \*/
        toMatrix = R.toMatrix = function (path, transform) {
            var bb = pathDimensions(path),
                el = {
                    _: {
                        transform: E
                    },
                    getBBox: function () {
                        return bb;
                    }
                };
            extractTransform(el, transform);
            return el.matrix;
        },
    /*\
     * Raphael.transformPath
     [ method ]
     **
     * Utility method
     **
     * Returns path transformed by a given transformation
     > Parameters
     - path (string) path string
     - transform (string|array) transformation string
     = (string) path
     \*/
        transformPath = R.transformPath = function (path, transform) {
            return mapPath(path, toMatrix(path, transform));
        },
        extractTransform = R._extractTransform = function (el, tstr) {
            if (tstr == null) {
                return el._.transform;
            }
            tstr = Str(tstr).replace(/\.{3}|\u2026/g, el._.transform || E);
            var tdata = R.parseTransformString(tstr),
                deg = 0,
                dx = 0,
                dy = 0,
                sx = 1,
                sy = 1,
                _ = el._,
                m = new Matrix;
            _.transform = tdata || [];
            if (tdata) {
                for (var i = 0, ii = tdata.length; i < ii; i++) {
                    var t = tdata[i],
                        tlen = t.length,
                        command = Str(t[0]).toLowerCase(),
                        absolute = t[0] != command,
                        inver = absolute ? m.invert() : 0,
                        x1,
                        y1,
                        x2,
                        y2,
                        bb;
                    if (command == "t" && tlen == 3) {
                        if (absolute) {
                            x1 = inver.x(0, 0);
                            y1 = inver.y(0, 0);
                            x2 = inver.x(t[1], t[2]);
                            y2 = inver.y(t[1], t[2]);
                            m.translate(x2 - x1, y2 - y1);
                        } else {
                            m.translate(t[1], t[2]);
                        }
                    } else if (command == "r") {
                        if (tlen == 2) {
                            bb = bb || el.getBBox(1);
                            m.rotate(t[1], bb.x + bb.width / 2, bb.y + bb.height / 2);
                            deg += t[1];
                        } else if (tlen == 4) {
                            if (absolute) {
                                x2 = inver.x(t[2], t[3]);
                                y2 = inver.y(t[2], t[3]);
                                m.rotate(t[1], x2, y2);
                            } else {
                                m.rotate(t[1], t[2], t[3]);
                            }
                            deg += t[1];
                        }
                    } else if (command == "s") {
                        if (tlen == 2 || tlen == 3) {
                            bb = bb || el.getBBox(1);
                            m.scale(t[1], t[tlen - 1], bb.x + bb.width / 2, bb.y + bb.height / 2);
                            sx *= t[1];
                            sy *= t[tlen - 1];
                        } else if (tlen == 5) {
                            if (absolute) {
                                x2 = inver.x(t[3], t[4]);
                                y2 = inver.y(t[3], t[4]);
                                m.scale(t[1], t[2], x2, y2);
                            } else {
                                m.scale(t[1], t[2], t[3], t[4]);
                            }
                            sx *= t[1];
                            sy *= t[2];
                        }
                    } else if (command == "m" && tlen == 7) {
                        m.add(t[1], t[2], t[3], t[4], t[5], t[6]);
                    }
                    _.dirtyT = 1;
                    el.matrix = m;
                }
            }

            /*\
             * Element.matrix
             [ property (object) ]
             **
             * Keeps @Matrix object, which represents element transformation
             \*/
            el.matrix = m;

            _.sx = sx;
            _.sy = sy;
            _.deg = deg;
            _.dx = dx = m.e;
            _.dy = dy = m.f;

            if (sx == 1 && sy == 1 && !deg && _.bbox) {
                _.bbox.x += +dx;
                _.bbox.y += +dy;
            } else {
                _.dirtyT = 1;
            }
        },
        getEmpty = function (item) {
            var l = item[0];
            switch (l.toLowerCase()) {
                case "t": return [l, 0, 0];
                case "m": return [l, 1, 0, 0, 1, 0, 0];
                case "r": if (item.length == 4) {
                    return [l, 0, item[2], item[3]];
                } else {
                    return [l, 0];
                }
                case "s": if (item.length == 5) {
                    return [l, 1, 1, item[3], item[4]];
                } else if (item.length == 3) {
                    return [l, 1, 1];
                } else {
                    return [l, 1];
                }
            }
        },
        equaliseTransform = R._equaliseTransform = function (t1, t2) {
            t2 = Str(t2).replace(/\.{3}|\u2026/g, t1);
            t1 = R.parseTransformString(t1) || [];
            t2 = R.parseTransformString(t2) || [];
            var maxlength = mmax(t1.length, t2.length),
                from = [],
                to = [],
                i = 0, j, jj,
                tt1, tt2;
            for (; i < maxlength; i++) {
                tt1 = t1[i] || getEmpty(t2[i]);
                tt2 = t2[i] || getEmpty(tt1);
                if ((tt1[0] != tt2[0]) ||
                    (tt1[0].toLowerCase() == "r" && (tt1[2] != tt2[2] || tt1[3] != tt2[3])) ||
                    (tt1[0].toLowerCase() == "s" && (tt1[3] != tt2[3] || tt1[4] != tt2[4]))
                ) {
                    return;
                }
                from[i] = [];
                to[i] = [];
                for (j = 0, jj = mmax(tt1.length, tt2.length); j < jj; j++) {
                    j in tt1 && (from[i][j] = tt1[j]);
                    j in tt2 && (to[i][j] = tt2[j]);
                }
            }
            return {
                from: from,
                to: to
            };
        };
    R._getContainer = function (x, y, w, h) {
        var container;
        container = h == null && !R.is(x, "object") ? g.doc.getElementById(x) : x;
        if (container == null) {
            return;
        }
        if (container.tagName) {
            if (y == null) {
                return {
                    container: container,
                    width: container.style.pixelWidth || container.offsetWidth,
                    height: container.style.pixelHeight || container.offsetHeight
                };
            } else {
                return {
                    container: container,
                    width: y,
                    height: w
                };
            }
        }
        return {
            container: 1,
            x: x,
            y: y,
            width: w,
            height: h
        };
    };
    /*\
     * Raphael.pathToRelative
     [ method ]
     **
     * Utility method
     **
     * Converts path to relative form
     > Parameters
     - pathString (string|array) path string or array of segments
     = (array) array of segments.
     \*/
    R.pathToRelative = pathToRelative;
    R._engine = {};
    /*\
     * Raphael.path2curve
     [ method ]
     **
     * Utility method
     **
     * Converts path to a new path where all segments are cubic bezier curves.
     > Parameters
     - pathString (string|array) path string or array of segments
     = (array) array of segments.
     \*/
    R.path2curve = path2curve;
    /*\
     * Raphael.matrix
     [ method ]
     **
     * Utility method
     **
     * Returns matrix based on given parameters.
     > Parameters
     - a (number)
     - b (number)
     - c (number)
     - d (number)
     - e (number)
     - f (number)
     = (object) @Matrix
     \*/
    R.matrix = function (a, b, c, d, e, f) {
        return new Matrix(a, b, c, d, e, f);
    };
    function Matrix(a, b, c, d, e, f) {
        if (a != null) {
            this.a = +a;
            this.b = +b;
            this.c = +c;
            this.d = +d;
            this.e = +e;
            this.f = +f;
        } else {
            this.a = 1;
            this.b = 0;
            this.c = 0;
            this.d = 1;
            this.e = 0;
            this.f = 0;
        }
    }
    (function (matrixproto) {
        /*\
         * Matrix.add
         [ method ]
         **
         * Adds given matrix to existing one.
         > Parameters
         - a (number)
         - b (number)
         - c (number)
         - d (number)
         - e (number)
         - f (number)
         or
         - matrix (object) @Matrix
         \*/
        matrixproto.add = function (a, b, c, d, e, f) {
            var out = [[], [], []],
                m = [[this.a, this.c, this.e], [this.b, this.d, this.f], [0, 0, 1]],
                matrix = [[a, c, e], [b, d, f], [0, 0, 1]],
                x, y, z, res;

            if (a && a instanceof Matrix) {
                matrix = [[a.a, a.c, a.e], [a.b, a.d, a.f], [0, 0, 1]];
            }

            for (x = 0; x < 3; x++) {
                for (y = 0; y < 3; y++) {
                    res = 0;
                    for (z = 0; z < 3; z++) {
                        res += m[x][z] * matrix[z][y];
                    }
                    out[x][y] = res;
                }
            }
            this.a = out[0][0];
            this.b = out[1][0];
            this.c = out[0][1];
            this.d = out[1][1];
            this.e = out[0][2];
            this.f = out[1][2];
        };
        /*\
         * Matrix.invert
         [ method ]
         **
         * Returns inverted version of the matrix
         = (object) @Matrix
         \*/
        matrixproto.invert = function () {
            var me = this,
                x = me.a * me.d - me.b * me.c;
            return new Matrix(me.d / x, -me.b / x, -me.c / x, me.a / x, (me.c * me.f - me.d * me.e) / x, (me.b * me.e - me.a * me.f) / x);
        };
        /*\
         * Matrix.clone
         [ method ]
         **
         * Returns copy of the matrix
         = (object) @Matrix
         \*/
        matrixproto.clone = function () {
            return new Matrix(this.a, this.b, this.c, this.d, this.e, this.f);
        };
        /*\
         * Matrix.translate
         [ method ]
         **
         * Translate the matrix
         > Parameters
         - x (number)
         - y (number)
         \*/
        matrixproto.translate = function (x, y) {
            this.add(1, 0, 0, 1, x, y);
        };
        /*\
         * Matrix.scale
         [ method ]
         **
         * Scales the matrix
         > Parameters
         - x (number)
         - y (number) #optional
         - cx (number) #optional
         - cy (number) #optional
         \*/
        matrixproto.scale = function (x, y, cx, cy) {
            y == null && (y = x);
            (cx || cy) && this.add(1, 0, 0, 1, cx, cy);
            this.add(x, 0, 0, y, 0, 0);
            (cx || cy) && this.add(1, 0, 0, 1, -cx, -cy);
        };
        /*\
         * Matrix.rotate
         [ method ]
         **
         * Rotates the matrix
         > Parameters
         - a (number)
         - x (number)
         - y (number)
         \*/
        matrixproto.rotate = function (a, x, y) {
            a = R.rad(a);
            x = x || 0;
            y = y || 0;
            var cos = +math.cos(a).toFixed(9),
                sin = +math.sin(a).toFixed(9);
            this.add(cos, sin, -sin, cos, x, y);
            this.add(1, 0, 0, 1, -x, -y);
        };
        /*\
         * Matrix.x
         [ method ]
         **
         * Return x coordinate for given point after transformation described by the matrix. See also @Matrix.y
         > Parameters
         - x (number)
         - y (number)
         = (number) x
         \*/
        matrixproto.x = function (x, y) {
            return x * this.a + y * this.c + this.e;
        };
        /*\
         * Matrix.y
         [ method ]
         **
         * Return y coordinate for given point after transformation described by the matrix. See also @Matrix.x
         > Parameters
         - x (number)
         - y (number)
         = (number) y
         \*/
        matrixproto.y = function (x, y) {
            return x * this.b + y * this.d + this.f;
        };
        matrixproto.get = function (i) {
            return +this[Str.fromCharCode(97 + i)].toFixed(4);
        };
        matrixproto.toString = function () {
            return R.svg ?
            "matrix(" + [this.get(0), this.get(1), this.get(2), this.get(3), this.get(4), this.get(5)].join() + ")" :
                [this.get(0), this.get(2), this.get(1), this.get(3), 0, 0].join();
        };
        matrixproto.toFilter = function () {
            return "progid:DXImageTransform.Microsoft.Matrix(M11=" + this.get(0) +
                ", M12=" + this.get(2) + ", M21=" + this.get(1) + ", M22=" + this.get(3) +
                ", Dx=" + this.get(4) + ", Dy=" + this.get(5) + ", sizingmethod='auto expand')";
        };
        matrixproto.offset = function () {
            return [this.e.toFixed(4), this.f.toFixed(4)];
        };
        function norm(a) {
            return a[0] * a[0] + a[1] * a[1];
        }
        function normalize(a) {
            var mag = math.sqrt(norm(a));
            a[0] && (a[0] /= mag);
            a[1] && (a[1] /= mag);
        }
        /*\
         * Matrix.split
         [ method ]
         **
         * Splits matrix into primitive transformations
         = (object) in format:
         o dx (number) translation by x
         o dy (number) translation by y
         o scalex (number) scale by x
         o scaley (number) scale by y
         o shear (number) shear
         o rotate (number) rotation in deg
         o isSimple (boolean) could it be represented via simple transformations
         \*/
        matrixproto.split = function () {
            var out = {};
            // translation
            out.dx = this.e;
            out.dy = this.f;

            // scale and shear
            var row = [[this.a, this.c], [this.b, this.d]];
            out.scalex = math.sqrt(norm(row[0]));
            normalize(row[0]);

            out.shear = row[0][0] * row[1][0] + row[0][1] * row[1][1];
            row[1] = [row[1][0] - row[0][0] * out.shear, row[1][1] - row[0][1] * out.shear];

            out.scaley = math.sqrt(norm(row[1]));
            normalize(row[1]);
            out.shear /= out.scaley;

            // rotation
            var sin = -row[0][1],
                cos = row[1][1];
            if (cos < 0) {
                out.rotate = R.deg(math.acos(cos));
                if (sin < 0) {
                    out.rotate = 360 - out.rotate;
                }
            } else {
                out.rotate = R.deg(math.asin(sin));
            }

            out.isSimple = !+out.shear.toFixed(9) && (out.scalex.toFixed(9) == out.scaley.toFixed(9) || !out.rotate);
            out.isSuperSimple = !+out.shear.toFixed(9) && out.scalex.toFixed(9) == out.scaley.toFixed(9) && !out.rotate;
            out.noRotation = !+out.shear.toFixed(9) && !out.rotate;
            return out;
        };
        /*\
         * Matrix.toTransformString
         [ method ]
         **
         * Return transform string that represents given matrix
         = (string) transform string
         \*/
        matrixproto.toTransformString = function (shorter) {
            var s = shorter || this[split]();
            if (s.isSimple) {
                s.scalex = +s.scalex.toFixed(4);
                s.scaley = +s.scaley.toFixed(4);
                s.rotate = +s.rotate.toFixed(4);
                return  (s.dx || s.dy ? "t" + [s.dx, s.dy] : E) +
                    (s.scalex != 1 || s.scaley != 1 ? "s" + [s.scalex, s.scaley, 0, 0] : E) +
                    (s.rotate ? "r" + [s.rotate, 0, 0] : E);
            } else {
                return "m" + [this.get(0), this.get(1), this.get(2), this.get(3), this.get(4), this.get(5)];
            }
        };
    })(Matrix.prototype);

    var preventDefault = function () {
            this.returnValue = false;
        },
        preventTouch = function () {
            return this.originalEvent.preventDefault();
        },
        stopPropagation = function () {
            this.cancelBubble = true;
        },
        stopTouch = function () {
            return this.originalEvent.stopPropagation();
        },
        getEventPosition = function (e) {
            var scrollY = g.doc.documentElement.scrollTop || g.doc.body.scrollTop,
                scrollX = g.doc.documentElement.scrollLeft || g.doc.body.scrollLeft;

            return {
                x: e.clientX + scrollX,
                y: e.clientY + scrollY
            };
        },
        addEvent = (function () {
            if (g.doc.addEventListener) {
                return function (obj, type, fn, element) {
                    var f = function (e) {
                        var pos = getEventPosition(e);
                        return fn.call(element, e, pos.x, pos.y);
                    };
                    obj.addEventListener(type, f, false);

                    if (supportsTouch && touchMap[type]) {
                        var _f = function (e) {
                            var pos = getEventPosition(e),
                                olde = e;

                            for (var i = 0, ii = e.targetTouches && e.targetTouches.length; i < ii; i++) {
                                if (e.targetTouches[i].target == obj) {
                                    e = e.targetTouches[i];
                                    e.originalEvent = olde;
                                    e.preventDefault = preventTouch;
                                    e.stopPropagation = stopTouch;
                                    break;
                                }
                            }

                            return fn.call(element, e, pos.x, pos.y);
                        };
                        obj.addEventListener(touchMap[type], _f, false);
                    }

                    return function () {
                        obj.removeEventListener(type, f, false);

                        if (supportsTouch && touchMap[type])
                            obj.removeEventListener(touchMap[type], _f, false);

                        return true;
                    };
                };
            } else if (g.doc.attachEvent) {
                return function (obj, type, fn, element) {
                    var f = function (e) {
                        e = e || g.win.event;
                        var scrollY = g.doc.documentElement.scrollTop || g.doc.body.scrollTop,
                            scrollX = g.doc.documentElement.scrollLeft || g.doc.body.scrollLeft,
                            x = e.clientX + scrollX,
                            y = e.clientY + scrollY;
                        e.preventDefault = e.preventDefault || preventDefault;
                        e.stopPropagation = e.stopPropagation || stopPropagation;
                        return fn.call(element, e, x, y);
                    };
                    obj.attachEvent("on" + type, f);
                    var detacher = function () {
                        obj.detachEvent("on" + type, f);
                        return true;
                    };
                    return detacher;
                };
            }
        })(),
        drag = [],
        dragMove = function (e) {
            var x = e.clientX,
                y = e.clientY,
                scrollY = g.doc.documentElement.scrollTop || g.doc.body.scrollTop,
                scrollX = g.doc.documentElement.scrollLeft || g.doc.body.scrollLeft,
                dragi,
                j = drag.length;
            while (j--) {
                dragi = drag[j];
                if (supportsTouch && e.touches) {
                    var i = e.touches.length,
                        touch;
                    while (i--) {
                        touch = e.touches[i];
                        if (touch.identifier == dragi.el._drag.id) {
                            x = touch.clientX;
                            y = touch.clientY;
                            (e.originalEvent ? e.originalEvent : e).preventDefault();
                            break;
                        }
                    }
                } else {
                    e.preventDefault();
                }
                var node = dragi.el.node,
                    o,
                    next = node.nextSibling,
                    parent = node.parentNode,
                    display = node.style.display;
                g.win.opera && parent.removeChild(node);
                node.style.display = "none";
                o = dragi.el.paper.getElementByPoint(x, y);
                node.style.display = display;
                g.win.opera && (next ? parent.insertBefore(node, next) : parent.appendChild(node));
                o && eve("raphael.drag.over." + dragi.el.id, dragi.el, o);
                x += scrollX;
                y += scrollY;
                eve("raphael.drag.move." + dragi.el.id, dragi.move_scope || dragi.el, x - dragi.el._drag.x, y - dragi.el._drag.y, x, y, e);
            }
        },
        dragUp = function (e) {
            R.unmousemove(dragMove).unmouseup(dragUp);
            var i = drag.length,
                dragi;
            while (i--) {
                dragi = drag[i];
                dragi.el._drag = {};
                eve("raphael.drag.end." + dragi.el.id, dragi.end_scope || dragi.start_scope || dragi.move_scope || dragi.el, e);
            }
            drag = [];
        },
    /*\
     * Raphael.el
     [ property (object) ]
     **
     * You can add your own method to elements. This is usefull when you want to hack default functionality or
     * want to wrap some common transformation or attributes in one method. In difference to canvas methods,
     * you can redefine element method at any time. Expending element methods wouldn’t affect set.
     > Usage
     | Raphael.el.red = function () {
     |     this.attr({fill: "#f00"});
     | };
     | // then use it
     | paper.circle(100, 100, 20).red();
     \*/
        elproto = R.el = {};
    /*\
     * Element.click
     [ method ]
     **
     * Adds event handler for click for the element.
     > Parameters
     - handler (function) handler for the event
     = (object) @Element
     \*/
    /*\
     * Element.unclick
     [ method ]
     **
     * Removes event handler for click for the element.
     > Parameters
     - handler (function) #optional handler for the event
     = (object) @Element
     \*/

    /*\
     * Element.dblclick
     [ method ]
     **
     * Adds event handler for double click for the element.
     > Parameters
     - handler (function) handler for the event
     = (object) @Element
     \*/
    /*\
     * Element.undblclick
     [ method ]
     **
     * Removes event handler for double click for the element.
     > Parameters
     - handler (function) #optional handler for the event
     = (object) @Element
     \*/

    /*\
     * Element.mousedown
     [ method ]
     **
     * Adds event handler for mousedown for the element.
     > Parameters
     - handler (function) handler for the event
     = (object) @Element
     \*/
    /*\
     * Element.unmousedown
     [ method ]
     **
     * Removes event handler for mousedown for the element.
     > Parameters
     - handler (function) #optional handler for the event
     = (object) @Element
     \*/

    /*\
     * Element.mousemove
     [ method ]
     **
     * Adds event handler for mousemove for the element.
     > Parameters
     - handler (function) handler for the event
     = (object) @Element
     \*/
    /*\
     * Element.unmousemove
     [ method ]
     **
     * Removes event handler for mousemove for the element.
     > Parameters
     - handler (function) #optional handler for the event
     = (object) @Element
     \*/

    /*\
     * Element.mouseout
     [ method ]
     **
     * Adds event handler for mouseout for the element.
     > Parameters
     - handler (function) handler for the event
     = (object) @Element
     \*/
    /*\
     * Element.unmouseout
     [ method ]
     **
     * Removes event handler for mouseout for the element.
     > Parameters
     - handler (function) #optional handler for the event
     = (object) @Element
     \*/

    /*\
     * Element.mouseover
     [ method ]
     **
     * Adds event handler for mouseover for the element.
     > Parameters
     - handler (function) handler for the event
     = (object) @Element
     \*/
    /*\
     * Element.unmouseover
     [ method ]
     **
     * Removes event handler for mouseover for the element.
     > Parameters
     - handler (function) #optional handler for the event
     = (object) @Element
     \*/

    /*\
     * Element.mouseup
     [ method ]
     **
     * Adds event handler for mouseup for the element.
     > Parameters
     - handler (function) handler for the event
     = (object) @Element
     \*/
    /*\
     * Element.unmouseup
     [ method ]
     **
     * Removes event handler for mouseup for the element.
     > Parameters
     - handler (function) #optional handler for the event
     = (object) @Element
     \*/

    /*\
     * Element.touchstart
     [ method ]
     **
     * Adds event handler for touchstart for the element.
     > Parameters
     - handler (function) handler for the event
     = (object) @Element
     \*/
    /*\
     * Element.untouchstart
     [ method ]
     **
     * Removes event handler for touchstart for the element.
     > Parameters
     - handler (function) #optional handler for the event
     = (object) @Element
     \*/

    /*\
     * Element.touchmove
     [ method ]
     **
     * Adds event handler for touchmove for the element.
     > Parameters
     - handler (function) handler for the event
     = (object) @Element
     \*/
    /*\
     * Element.untouchmove
     [ method ]
     **
     * Removes event handler for touchmove for the element.
     > Parameters
     - handler (function) #optional handler for the event
     = (object) @Element
     \*/

    /*\
     * Element.touchend
     [ method ]
     **
     * Adds event handler for touchend for the element.
     > Parameters
     - handler (function) handler for the event
     = (object) @Element
     \*/
    /*\
     * Element.untouchend
     [ method ]
     **
     * Removes event handler for touchend for the element.
     > Parameters
     - handler (function) #optional handler for the event
     = (object) @Element
     \*/

    /*\
     * Element.touchcancel
     [ method ]
     **
     * Adds event handler for touchcancel for the element.
     > Parameters
     - handler (function) handler for the event
     = (object) @Element
     \*/
    /*\
     * Element.untouchcancel
     [ method ]
     **
     * Removes event handler for touchcancel for the element.
     > Parameters
     - handler (function) #optional handler for the event
     = (object) @Element
     \*/
    for (var i = events.length; i--;) {
        (function (eventName) {
            R[eventName] = elproto[eventName] = function (fn, scope) {
                if (R.is(fn, "function")) {
                    this.events = this.events || [];
                    this.events.push({name: eventName, f: fn, unbind: addEvent(this.shape || this.node || g.doc, eventName, fn, scope || this)});
                }
                return this;
            };
            R["un" + eventName] = elproto["un" + eventName] = function (fn) {
                var events = this.events || [],
                    l = events.length;
                while (l--){
                    if (events[l].name == eventName && (R.is(fn, "undefined") || events[l].f == fn)) {
                        events[l].unbind();
                        events.splice(l, 1);
                        !events.length && delete this.events;
                    }
                }
                return this;
            };
        })(events[i]);
    }

    /*\
     * Element.data
     [ method ]
     **
     * Adds or retrieves given value asociated with given key.
     **
     * See also @Element.removeData
     > Parameters
     - key (string) key to store data
     - value (any) #optional value to store
     = (object) @Element
     * or, if value is not specified:
     = (any) value
     * or, if key and value are not specified:
     = (object) Key/value pairs for all the data associated with the element.
     > Usage
     | for (var i = 0, i < 5, i++) {
     |     paper.circle(10 + 15 * i, 10, 10)
     |          .attr({fill: "#000"})
     |          .data("i", i)
     |          .click(function () {
     |             alert(this.data("i"));
     |          });
     | }
     \*/
    elproto.data = function (key, value) {
        var data = eldata[this.id] = eldata[this.id] || {};
        if (arguments.length == 0) {
            return data;
        }
        if (arguments.length == 1) {
            if (R.is(key, "object")) {
                for (var i in key) if (key[has](i)) {
                    this.data(i, key[i]);
                }
                return this;
            }
            eve("raphael.data.get." + this.id, this, data[key], key);
            return data[key];
        }
        data[key] = value;
        eve("raphael.data.set." + this.id, this, value, key);
        return this;
    };

    elproto.datum = function(){
        return arguments.length == 0 ? this._bindData : ((this._bindData = arguments[0]), this);
    };

    /*\
     * Element.removeData
     [ method ]
     **
     * Removes value associated with an element by given key.
     * If key is not provided, removes all the data of the element.
     > Parameters
     - key (string) #optional key
     = (object) @Element
     \*/
    elproto.removeData = function (key) {
        if (key == null) {
            eldata[this.id] = {};
        } else {
            eldata[this.id] && delete eldata[this.id][key];
        }
        return this;
    };
    /*\
     * Element.getData
     [ method ]
     **
     * Retrieves the element data
     = (object) data
     \*/
    elproto.getData = function () {
        return clone(eldata[this.id] || {});
    };
    /*\
     * Element.hover
     [ method ]
     **
     * Adds event handlers for hover for the element.
     > Parameters
     - f_in (function) handler for hover in
     - f_out (function) handler for hover out
     - icontext (object) #optional context for hover in handler
     - ocontext (object) #optional context for hover out handler
     = (object) @Element
     \*/
    elproto.hover = function (f_in, f_out, scope_in, scope_out) {
        return this.mouseover(f_in, scope_in).mouseout(f_out, scope_out || scope_in);
    };
    /*\
     * Element.unhover
     [ method ]
     **
     * Removes event handlers for hover for the element.
     > Parameters
     - f_in (function) handler for hover in
     - f_out (function) handler for hover out
     = (object) @Element
     \*/
    elproto.unhover = function (f_in, f_out) {
        return this.unmouseover(f_in).unmouseout(f_out);
    };
    var draggable = [];
    /*\
     * Element.drag
     [ method ]
     **
     * Adds event handlers for drag of the element.
     > Parameters
     - onmove (function) handler for moving
     - onstart (function) handler for drag start
     - onend (function) handler for drag end
     - mcontext (object) #optional context for moving handler
     - scontext (object) #optional context for drag start handler
     - econtext (object) #optional context for drag end handler
     * Additionaly following `drag` events will be triggered: `drag.start.<id>` on start,
     * `drag.end.<id>` on end and `drag.move.<id>` on every move. When element will be dragged over another element
     * `drag.over.<id>` will be fired as well.
     *
     * Start event and start handler will be called in specified context or in context of the element with following parameters:
     o x (number) x position of the mouse
     o y (number) y position of the mouse
     o event (object) DOM event object
     * Move event and move handler will be called in specified context or in context of the element with following parameters:
     o dx (number) shift by x from the start point
     o dy (number) shift by y from the start point
     o x (number) x position of the mouse
     o y (number) y position of the mouse
     o event (object) DOM event object
     * End event and end handler will be called in specified context or in context of the element with following parameters:
     o event (object) DOM event object
     = (object) @Element
     \*/
    elproto.drag = function (onmove, onstart, onend, move_scope, start_scope, end_scope) {
        function start(e) {
            (e.originalEvent || e).preventDefault();
            var x = e.clientX,
                y = e.clientY,
                scrollY = g.doc.documentElement.scrollTop || g.doc.body.scrollTop,
                scrollX = g.doc.documentElement.scrollLeft || g.doc.body.scrollLeft;
            this._drag.id = e.identifier;
            if (supportsTouch && e.touches) {
                var i = e.touches.length, touch;
                while (i--) {
                    touch = e.touches[i];
                    this._drag.id = touch.identifier;
                    if (touch.identifier == this._drag.id) {
                        x = touch.clientX;
                        y = touch.clientY;
                        break;
                    }
                }
            }
            this._drag.x = x + scrollX;
            this._drag.y = y + scrollY;
            !drag.length && R.mousemove(dragMove).mouseup(dragUp);
            drag.push({el: this, move_scope: move_scope, start_scope: start_scope, end_scope: end_scope});
            onstart && eve.on("raphael.drag.start." + this.id, onstart);
            onmove && eve.on("raphael.drag.move." + this.id, onmove);
            onend && eve.on("raphael.drag.end." + this.id, onend);
            eve("raphael.drag.start." + this.id, start_scope || move_scope || this, e.clientX + scrollX, e.clientY + scrollY, e);
        }
        this._drag = {};
        draggable.push({el: this, start: start});
        this.mousedown(start);
        return this;
    };
    /*\
     * Element.onDragOver
     [ method ]
     **
     * Shortcut for assigning event handler for `drag.over.<id>` event, where id is id of the element (see @Element.id).
     > Parameters
     - f (function) handler for event, first argument would be the element you are dragging over
     \*/
    elproto.onDragOver = function (f) {
        f ? eve.on("raphael.drag.over." + this.id, f) : eve.unbind("raphael.drag.over." + this.id);
    };
    /*\
     * Element.undrag
     [ method ]
     **
     * Removes all drag event handlers from given element.
     \*/
    elproto.undrag = function () {
        var i = draggable.length;
        while (i--) if (draggable[i].el == this) {
            this.unmousedown(draggable[i].start);
            draggable.splice(i, 1);
            eve.unbind("raphael.drag.*." + this.id);
        }
        !draggable.length && R.unmousemove(dragMove).unmouseup(dragUp);
        drag = [];
    };
    /*\
     * Paper.circle
     [ method ]
     **
     * Draws a circle.
     **
     > Parameters
     **
     - x (number) x coordinate of the centre
     - y (number) y coordinate of the centre
     - r (number) radius
     = (object) Raphaël element object with type “circle”
     **
     > Usage
     | var c = paper.circle(50, 50, 40);
     \*/
    paperproto.circle = function (x, y, r) {
        var out = R._engine.circle(this, x || 0, y || 0, r || 0);
        this.__set__ && this.__set__.push(out);
        return out;
    };
    /*\
     * Paper.rect
     [ method ]
     *
     * Draws a rectangle.
     **
     > Parameters
     **
     - x (number) x coordinate of the top left corner
     - y (number) y coordinate of the top left corner
     - width (number) width
     - height (number) height
     - r (number) #optional radius for rounded corners, default is 0
     = (object) Raphaël element object with type “rect”
     **
     > Usage
     | // regular rectangle
     | var c = paper.rect(10, 10, 50, 50);
     | // rectangle with rounded corners
     | var c = paper.rect(40, 40, 50, 50, 10);
     \*/
    paperproto.rect = function (x, y, w, h, r) {
        var out = R._engine.rect(this, x || 0, y || 0, w || 0, h || 0, r || 0);
        this.__set__ && this.__set__.push(out);
        return out;
    };
    /*\
     * Paper.ellipse
     [ method ]
     **
     * Draws an ellipse.
     **
     > Parameters
     **
     - x (number) x coordinate of the centre
     - y (number) y coordinate of the centre
     - rx (number) horizontal radius
     - ry (number) vertical radius
     = (object) Raphaël element object with type “ellipse”
     **
     > Usage
     | var c = paper.ellipse(50, 50, 40, 20);
     \*/
    paperproto.ellipse = function (x, y, rx, ry) {
        var out = R._engine.ellipse(this, x || 0, y || 0, rx || 0, ry || 0);
        this.__set__ && this.__set__.push(out);
        return out;
    };
    /*\
     * Paper.path
     [ method ]
     **
     * Creates a path element by given path data string.
     > Parameters
     - pathString (string) #optional path string in SVG format.
     * Path string consists of one-letter commands, followed by comma seprarated arguments in numercal form. Example:
     | "M10,20L30,40"
     * Here we can see two commands: “M”, with arguments `(10, 20)` and “L” with arguments `(30, 40)`. Upper case letter mean command is absolute, lower case—relative.
     *
     # <p>Here is short list of commands available, for more details see <a href="http://www.w3.org/TR/SVG/paths.html#PathData" title="Details of a path's data attribute's format are described in the SVG specification.">SVG path string format</a>.</p>
     # <table><thead><tr><th>Command</th><th>Name</th><th>Parameters</th></tr></thead><tbody>
     # <tr><td>M</td><td>moveto</td><td>(x y)+</td></tr>
     # <tr><td>Z</td><td>closepath</td><td>(none)</td></tr>
     # <tr><td>L</td><td>lineto</td><td>(x y)+</td></tr>
     # <tr><td>H</td><td>horizontal lineto</td><td>x+</td></tr>
     # <tr><td>V</td><td>vertical lineto</td><td>y+</td></tr>
     # <tr><td>C</td><td>curveto</td><td>(x1 y1 x2 y2 x y)+</td></tr>
     # <tr><td>S</td><td>smooth curveto</td><td>(x2 y2 x y)+</td></tr>
     # <tr><td>Q</td><td>quadratic Bézier curveto</td><td>(x1 y1 x y)+</td></tr>
     # <tr><td>T</td><td>smooth quadratic Bézier curveto</td><td>(x y)+</td></tr>
     # <tr><td>A</td><td>elliptical arc</td><td>(rx ry x-axis-rotation large-arc-flag sweep-flag x y)+</td></tr>
     # <tr><td>R</td><td><a href="http://en.wikipedia.org/wiki/Catmull–Rom_spline#Catmull.E2.80.93Rom_spline">Catmull-Rom curveto</a>*</td><td>x1 y1 (x y)+</td></tr></tbody></table>
     * * “Catmull-Rom curveto” is a not standard SVG command and added in 2.0 to make life easier.
     * Note: there is a special case when path consist of just three commands: “M10,10R…z”. In this case path will smoothly connects to its beginning.
     > Usage
     | var c = paper.path("M10 10L90 90");
     | // draw a diagonal line:
     | // move to 10,10, line to 90,90
     * For example of path strings, check out these icons: http://raphaeljs.com/icons/
     \*/
    paperproto.path = function (pathString) {
        pathString && !R.is(pathString, string) && !R.is(pathString[0], array) && (pathString += E);
        var out = R._engine.path(R.format[apply](R, arguments), this);
        this.__set__ && this.__set__.push(out);
        return out;
    };
    /*\
     * Paper.image
     [ method ]
     **
     * Embeds an image into the surface.
     **
     > Parameters
     **
     - src (string) URI of the source image
     - x (number) x coordinate position
     - y (number) y coordinate position
     - width (number) width of the image
     - height (number) height of the image
     = (object) Raphaël element object with type “image”
     **
     > Usage
     | var c = paper.image("apple.png", 10, 10, 80, 80);
     \*/
    paperproto.image = function (src, x, y, w, h) {
        var out = R._engine.image(this, src || "about:blank", x || 0, y || 0, w || 0, h || 0);
        this.__set__ && this.__set__.push(out);
        return out;
    };
    /*\
     * Paper.text
     [ method ]
     **
     * Draws a text string. If you need line breaks, put “\n” in the string.
     **
     > Parameters
     **
     - x (number) x coordinate position
     - y (number) y coordinate position
     - text (string) The text string to draw
     = (object) Raphaël element object with type “text”
     **
     > Usage
     | var t = paper.text(50, 50, "Raphaël\nkicks\nbutt!");
     \*/
    paperproto.text = function (x, y, text) {
        var out = R._engine.text(this, x || 0, y || 0, Str(text));
        this.__set__ && this.__set__.push(out);
        return out;
    };
    /*\
     * Paper.set
     [ method ]
     **
     * Creates array-like object to keep and operate several elements at once.
     * Warning: it doesn’t create any elements for itself in the page, it just groups existing elements.
     * Sets act as pseudo elements — all methods available to an element can be used on a set.
     = (object) array-like object that represents set of elements
     **
     > Usage
     | var st = paper.set();
     | st.push(
     |     paper.circle(10, 10, 5),
     |     paper.circle(30, 10, 5)
     | );
     | st.attr({fill: "red"}); // changes the fill of both circles
     \*/
    paperproto.set = function (itemsArray) {
        !R.is(itemsArray, "array") && (itemsArray = Array.prototype.splice.call(arguments, 0, arguments.length));
        var out = new Set(itemsArray);
        this.__set__ && this.__set__.push(out);
        out["paper"] = this;
        out["type"] = "set";
        return out;
    };
    /*\
     * Paper.setStart
     [ method ]
     **
     * Creates @Paper.set. All elements that will be created after calling this method and before calling
     * @Paper.setFinish will be added to the set.
     **
     > Usage
     | paper.setStart();
     | paper.circle(10, 10, 5),
     | paper.circle(30, 10, 5)
     | var st = paper.setFinish();
     | st.attr({fill: "red"}); // changes the fill of both circles
     \*/
    paperproto.setStart = function (set) {
        this.__set__ = set || this.set();
    };
    /*\
     * Paper.setFinish
     [ method ]
     **
     * See @Paper.setStart. This method finishes catching and returns resulting set.
     **
     = (object) set
     \*/
    paperproto.setFinish = function (set) {
        var out = this.__set__;
        delete this.__set__;
        return out;
    };
    /*\
     * Paper.getSize
     [ method ]
     **
     * Obtains current paper actual size.
     **
     = (object)
     \*/
    paperproto.getSize = function () {
        var container = this.canvas.parentNode;
        return {
            width: container.offsetWidth,
            height: container.offsetHeight
        };
    };
    /*\
     * Paper.setSize
     [ method ]
     **
     * If you need to change dimensions of the canvas call this method
     **
     > Parameters
     **
     - width (number) new width of the canvas
     - height (number) new height of the canvas
     \*/
    paperproto.setSize = function (width, height) {
        return R._engine.setSize.call(this, width, height);
    };
    /*\
     * Paper.setViewBox
     [ method ]
     **
     * Sets the view box of the paper. Practically it gives you ability to zoom and pan whole paper surface by
     * specifying new boundaries.
     **
     > Parameters
     **
     - x (number) new x position, default is `0`
     - y (number) new y position, default is `0`
     - w (number) new width of the canvas
     - h (number) new height of the canvas
     - fit (boolean) `true` if you want graphics to fit into new boundary box
     \*/
    paperproto.setViewBox = function (x, y, w, h, fit) {
        return R._engine.setViewBox.call(this, x, y, w, h, fit);
    };
    /*\
     * Paper.top
     [ property ]
     **
     * Points to the topmost element on the paper
     \*/
    /*\
     * Paper.bottom
     [ property ]
     **
     * Points to the bottom element on the paper
     \*/
    paperproto.top = paperproto.bottom = null;
    /*\
     * Paper.raphael
     [ property ]
     **
     * Points to the @Raphael object/function
     \*/
    paperproto.raphael = R;
    var getOffset = function (elem) {
        var box = elem.getBoundingClientRect(),
            doc = elem.ownerDocument,
            body = doc.body,
            docElem = doc.documentElement,
            clientTop = docElem.clientTop || body.clientTop || 0, clientLeft = docElem.clientLeft || body.clientLeft || 0,
            top  = box.top  + (g.win.pageYOffset || docElem.scrollTop || body.scrollTop ) - clientTop,
            left = box.left + (g.win.pageXOffset || docElem.scrollLeft || body.scrollLeft) - clientLeft;
        return {
            y: top,
            x: left
        };
    };
    /*\
     * Paper.getElementByPoint
     [ method ]
     **
     * Returns you topmost element under given point.
     **
     = (object) Raphaël element object
     > Parameters
     **
     - x (number) x coordinate from the top left corner of the window
     - y (number) y coordinate from the top left corner of the window
     > Usage
     | paper.getElementByPoint(mouseX, mouseY).attr({stroke: "#f00"});
     \*/
    paperproto.getElementByPoint = function (x, y) {
        var paper = this,
            svg = paper.canvas,
            target = g.doc.elementFromPoint(x, y);
        if (g.win.opera && target.tagName == "svg") {
            var so = getOffset(svg),
                sr = svg.createSVGRect();
            sr.x = x - so.x;
            sr.y = y - so.y;
            sr.width = sr.height = 1;
            var hits = svg.getIntersectionList(sr, null);
            if (hits.length) {
                target = hits[hits.length - 1];
            }
        }
        if (!target) {
            return null;
        }
        while (target.parentNode && target != svg.parentNode && !target.raphael) {
            target = target.parentNode;
        }
        target == paper.canvas.parentNode && (target = svg);
        target = target && target.raphael ? paper.getById(target.raphaelid) : null;
        return target;
    };

    /*\
     * Paper.getElementsByBBox
     [ method ]
     **
     * Returns set of elements that have an intersecting bounding box
     **
     > Parameters
     **
     - bbox (object) bbox to check with
     = (object) @Set
     \*/
    paperproto.getElementsByBBox = function (bbox) {
        var set = this.set();
        this.forEach(function (el) {
            if (R.isBBoxIntersect(el.getBBox(), bbox)) {
                set.push(el);
            }
        });
        return set;
    };

    /*\
     * Paper.getById
     [ method ]
     **
     * Returns you element by its internal ID.
     **
     > Parameters
     **
     - id (number) id
     = (object) Raphaël element object
     \*/
    paperproto.getById = function (id) {
        var bot = this.bottom;
        while (bot) {
            if (bot.id == id) {
                return bot;
            }
            bot = bot.next;
        }
        return null;
    };
    /*\
     * Paper.forEach
     [ method ]
     **
     * Executes given function for each element on the paper
     *
     * If callback function returns `false` it will stop loop running.
     **
     > Parameters
     **
     - callback (function) function to run
     - thisArg (object) context object for the callback
     = (object) Paper object
     > Usage
     | paper.forEach(function (el) {
     |     el.attr({ stroke: "blue" });
     | });
     \*/
    paperproto.forEach = function (callback, thisArg) {
        var bot = this.bottom;
        while (bot) {
            if (callback.call(thisArg, bot) === false) {
                return this;
            }
            bot = bot.next;
        }
        return this;
    };
    /*\
     * Paper.getElementsByPoint
     [ method ]
     **
     * Returns set of elements that have common point inside
     **
     > Parameters
     **
     - x (number) x coordinate of the point
     - y (number) y coordinate of the point
     = (object) @Set
     \*/
    paperproto.getElementsByPoint = function (x, y) {
        var set = this.set();
        this.forEach(function (el) {
            if (el.isPointInside(x, y)) {
                set.push(el);
            }
        });
        return set;
    };
    function x_y() {
        return this.x + S + this.y;
    }
    function x_y_w_h() {
        return this.x + S + this.y + S + this.width + " \xd7 " + this.height;
    }
    /*\
     * Element.isPointInside
     [ method ]
     **
     * Determine if given point is inside this element’s shape
     **
     > Parameters
     **
     - x (number) x coordinate of the point
     - y (number) y coordinate of the point
     = (boolean) `true` if point inside the shape
     \*/
    elproto.isPointInside = function (x, y) {
        var rp = this.realPath = getPath[this.type](this);
        if (this.attr('transform') && this.attr('transform').length) {
            rp = R.transformPath(rp, this.attr('transform'));
        }
        return R.isPointInsidePath(rp, x, y);
    };
    /*\
     * Element.getBBox
     [ method ]
     **
     * Return bounding box for a given element
     **
     > Parameters
     **
     - isWithoutTransform (boolean) flag, `true` if you want to have bounding box before transformations. Default is `false`.
     = (object) Bounding box object:
     o {
     o     x: (number) top left corner x
     o     y: (number) top left corner y
     o     x2: (number) bottom right corner x
     o     y2: (number) bottom right corner y
     o     width: (number) width
     o     height: (number) height
     o }
     \*/
    elproto.getBBox = function (isWithoutTransform) {
        if (this.removed) {
            return {};
        }
        var _ = this._;
        if (isWithoutTransform) {
            if (_.dirty || !_.bboxwt) {
                this.realPath = getPath[this.type](this);
                _.bboxwt = pathDimensions(this.realPath);
                _.bboxwt.toString = x_y_w_h;
                _.dirty = 0;
            }
            return _.bboxwt;
        }
        if (_.dirty || _.dirtyT || !_.bbox) {
            if (_.dirty || !this.realPath) {
                _.bboxwt = 0;
                this.realPath = getPath[this.type](this);
            }
            _.bbox = pathDimensions(mapPath(this.realPath, this.matrix));
            _.bbox.toString = x_y_w_h;
            _.dirty = _.dirtyT = 0;
        }
        return _.bbox;
    };
    /*\
     * Element.clone
     [ method ]
     **
     = (object) clone of a given element
     **
     \*/
    elproto.clone = function () {
        if (this.removed) {
            return null;
        }
        var out = this.paper[this.type]().attr(this.attr());
        this.__set__ && this.__set__.push(out);
        return out;
    };
    /*\
     * Element.glow
     [ method ]
     **
     * Return set of elements that create glow-like effect around given element. See @Paper.set.
     *
     * Note: Glow is not connected to the element. If you change element attributes it won’t adjust itself.
     **
     > Parameters
     **
     - glow (object) #optional parameters object with all properties optional:
     o {
     o     width (number) size of the glow, default is `10`
     o     fill (boolean) will it be filled, default is `false`
     o     opacity (number) opacity, default is `0.5`
     o     offsetx (number) horizontal offset, default is `0`
     o     offsety (number) vertical offset, default is `0`
     o     color (string) glow colour, default is `black`
     o }
     = (object) @Paper.set of elements that represents glow
     \*/
    elproto.glow = function (glow) {
        if (this.type == "text") {
            return null;
        }
        glow = glow || {};
        var s = {
                width: (glow.width || 10) + (+this.attr("stroke-width") || 1),
                fill: glow.fill || false,
                opacity: glow.opacity == null ? .5 : glow.opacity,
                offsetx: glow.offsetx || 0,
                offsety: glow.offsety || 0,
                color: glow.color || "#000"
            },
            c = s.width / 2,
            r = this.paper,
            out = r.set(),
            path = this.realPath || getPath[this.type](this);
        path = this.matrix ? mapPath(path, this.matrix) : path;
        for (var i = 1; i < c + 1; i++) {
            out.push(r.path(path).attr({
                stroke: s.color,
                fill: s.fill ? s.color : "none",
                "stroke-linejoin": "round",
                "stroke-linecap": "round",
                "stroke-width": +(s.width / c * i).toFixed(3),
                opacity: +(s.opacity / c).toFixed(3)
            }));
        }
        return out.insertBefore(this).translate(s.offsetx, s.offsety);
    };
    var curveslengths = {},
        getPointAtSegmentLength = function (p1x, p1y, c1x, c1y, c2x, c2y, p2x, p2y, length) {
            if (length == null) {
                return bezlen(p1x, p1y, c1x, c1y, c2x, c2y, p2x, p2y);
            } else {
                return R.findDotsAtSegment(p1x, p1y, c1x, c1y, c2x, c2y, p2x, p2y, getTatLen(p1x, p1y, c1x, c1y, c2x, c2y, p2x, p2y, length));
            }
        },
        getLengthFactory = function (istotal, subpath) {
            return function (path, length, onlystart) {
                path = path2curve(path);
                var x, y, p, l, sp = "", subpaths = {}, point,
                    len = 0;
                for (var i = 0, ii = path.length; i < ii; i++) {
                    p = path[i];
                    if (p[0] == "M") {
                        x = +p[1];
                        y = +p[2];
                    } else {
                        l = getPointAtSegmentLength(x, y, p[1], p[2], p[3], p[4], p[5], p[6]);
                        if (len + l > length) {
                            if (subpath && !subpaths.start) {
                                point = getPointAtSegmentLength(x, y, p[1], p[2], p[3], p[4], p[5], p[6], length - len);
                                sp += ["C" + point.start.x, point.start.y, point.m.x, point.m.y, point.x, point.y];
                                if (onlystart) {return sp;}
                                subpaths.start = sp;
                                sp = ["M" + point.x, point.y + "C" + point.n.x, point.n.y, point.end.x, point.end.y, p[5], p[6]].join();
                                len += l;
                                x = +p[5];
                                y = +p[6];
                                continue;
                            }
                            if (!istotal && !subpath) {
                                point = getPointAtSegmentLength(x, y, p[1], p[2], p[3], p[4], p[5], p[6], length - len);
                                return {x: point.x, y: point.y, alpha: point.alpha};
                            }
                        }
                        len += l;
                        x = +p[5];
                        y = +p[6];
                    }
                    sp += p.shift() + p;
                }
                subpaths.end = sp;
                point = istotal ? len : subpath ? subpaths : R.findDotsAtSegment(x, y, p[0], p[1], p[2], p[3], p[4], p[5], 1);
                point.alpha && (point = {x: point.x, y: point.y, alpha: point.alpha});
                return point;
            };
        };
    var getTotalLength = getLengthFactory(1),
        getPointAtLength = getLengthFactory(),
        getSubpathsAtLength = getLengthFactory(0, 1);
    /*\
     * Raphael.getTotalLength
     [ method ]
     **
     * Returns length of the given path in pixels.
     **
     > Parameters
     **
     - path (string) SVG path string.
     **
     = (number) length.
     \*/
    R.getTotalLength = getTotalLength;
    /*\
     * Raphael.getPointAtLength
     [ method ]
     **
     * Return coordinates of the point located at the given length on the given path.
     **
     > Parameters
     **
     - path (string) SVG path string
     - length (number)
     **
     = (object) representation of the point:
     o {
     o     x: (number) x coordinate
     o     y: (number) y coordinate
     o     alpha: (number) angle of derivative
     o }
     \*/
    R.getPointAtLength = getPointAtLength;
    /*\
     * Raphael.getSubpath
     [ method ]
     **
     * Return subpath of a given path from given length to given length.
     **
     > Parameters
     **
     - path (string) SVG path string
     - from (number) position of the start of the segment
     - to (number) position of the end of the segment
     **
     = (string) pathstring for the segment
     \*/
    R.getSubpath = function (path, from, to) {
        if (this.getTotalLength(path) - to < 1e-6) {
            return getSubpathsAtLength(path, from).end;
        }
        var a = getSubpathsAtLength(path, to, 1);
        return from ? getSubpathsAtLength(a, from).end : a;
    };
    /*\
     * Element.getTotalLength
     [ method ]
     **
     * Returns length of the path in pixels. Only works for element of “path” type.
     = (number) length.
     \*/
    elproto.getTotalLength = function () {
        var path = this.getPath();
        if (!path) {
            return;
        }

        if (this.node.getTotalLength) {
            return this.node.getTotalLength();
        }

        return getTotalLength(path);
    };
    /*\
     * Element.getPointAtLength
     [ method ]
     **
     * Return coordinates of the point located at the given length on the given path. Only works for element of “path” type.
     **
     > Parameters
     **
     - length (number)
     **
     = (object) representation of the point:
     o {
     o     x: (number) x coordinate
     o     y: (number) y coordinate
     o     alpha: (number) angle of derivative
     o }
     \*/
    elproto.getPointAtLength = function (length) {
        var path = this.getPath();
        if (!path) {
            return;
        }

        return getPointAtLength(path, length);
    };
    /*\
     * Element.getPath
     [ method ]
     **
     * Returns path of the element. Only works for elements of “path” type and simple elements like circle.
     = (object) path
     **
     \*/
    elproto.getPath = function () {
        var path,
            getPath = R._getPath[this.type];

        if (this.type == "text" || this.type == "set") {
            return;
        }

        if (getPath) {
            path = getPath(this);
        }

        return path;
    };
    /*\
     * Element.getSubpath
     [ method ]
     **
     * Return subpath of a given element from given length to given length. Only works for element of “path” type.
     **
     > Parameters
     **
     - from (number) position of the start of the segment
     - to (number) position of the end of the segment
     **
     = (string) pathstring for the segment
     \*/
    elproto.getSubpath = function (from, to) {
        var path = this.getPath();
        if (!path) {
            return;
        }

        return R.getSubpath(path, from, to);
    };
    /*\
     * Raphael.easing_formulas
     [ property ]
     **
     * Object that contains easing formulas for animation. You could extend it with your own. By default it has following list of easing:
     # <ul>
     #     <li>“linear”</li>
     #     <li>“&lt;” or “easeIn” or “ease-in”</li>
     #     <li>“>” or “easeOut” or “ease-out”</li>
     #     <li>“&lt;>” or “easeInOut” or “ease-in-out”</li>
     #     <li>“backIn” or “back-in”</li>
     #     <li>“backOut” or “back-out”</li>
     #     <li>“elastic”</li>
     #     <li>“bounce”</li>
     # </ul>
     # <p>See also <a href="http://raphaeljs.com/easing.html">Easing demo</a>.</p>
     \*/
    var ef = R.easing_formulas = {
        linear: function (n) {
            return n;
        },
        "<": function (n) {
            return pow(n, 1.7);
        },
        ">": function (n) {
            return pow(n, .48);
        },
        "<>": function (n) {
            var q = .48 - n / 1.04,
                Q = math.sqrt(.1734 + q * q),
                x = Q - q,
                X = pow(abs(x), 1 / 3) * (x < 0 ? -1 : 1),
                y = -Q - q,
                Y = pow(abs(y), 1 / 3) * (y < 0 ? -1 : 1),
                t = X + Y + .5;
            return (1 - t) * 3 * t * t + t * t * t;
        },
        backIn: function (n) {
            var s = 1.70158;
            return n * n * ((s + 1) * n - s);
        },
        backOut: function (n) {
            n = n - 1;
            var s = 1.70158;
            return n * n * ((s + 1) * n + s) + 1;
        },
        elastic: function (n) {
            if (n == !!n) {
                return n;
            }
            return pow(2, -10 * n) * math.sin((n - .075) * (2 * PI) / .3) + 1;
        },
        bounce: function (n) {
            var s = 7.5625,
                p = 2.75,
                l;
            if (n < (1 / p)) {
                l = s * n * n;
            } else {
                if (n < (2 / p)) {
                    n -= (1.5 / p);
                    l = s * n * n + .75;
                } else {
                    if (n < (2.5 / p)) {
                        n -= (2.25 / p);
                        l = s * n * n + .9375;
                    } else {
                        n -= (2.625 / p);
                        l = s * n * n + .984375;
                    }
                }
            }
            return l;
        }
    };
    ef.easeIn = ef["ease-in"] = ef["<"];
    ef.easeOut = ef["ease-out"] = ef[">"];
    ef.easeInOut = ef["ease-in-out"] = ef["<>"];
    ef["back-in"] = ef.backIn;
    ef["back-out"] = ef.backOut;

    var animationElements = [],
        requestAnimFrame = window.requestAnimationFrame       ||
            window.webkitRequestAnimationFrame ||
            window.mozRequestAnimationFrame    ||
            window.oRequestAnimationFrame      ||
            window.msRequestAnimationFrame     ||
            function (callback) {
                setTimeout(callback, 16);
            },
        animation = function () {
            var Now = +new Date,
                l = 0;
            for (; l < animationElements.length; l++) {
                var e = animationElements[l];
                if (e.el.removed || e.paused) {
                    continue;
                }
                var time = Now - e.start,
                    ms = e.ms,
                    easing = e.easing,
                    from = e.from,
                    diff = e.diff,
                    to = e.to,
                    t = e.t,
                    that = e.el,
                    set = {},
                    now,
                    init = {},
                    key;
                if (e.initstatus) {
                    time = (e.initstatus * e.anim.top - e.prev) / (e.percent - e.prev) * ms;
                    e.status = e.initstatus;
                    delete e.initstatus;
                    e.stop && animationElements.splice(l--, 1);
                } else {
                    e.status = (e.prev + (e.percent - e.prev) * (time / ms)) / e.anim.top;
                }
                if (time < 0) {
                    continue;
                }
                if (time < ms) {
                    var pos = easing(time / ms);
                    for (var attr in from) if (from[has](attr)) {
                        switch (availableAnimAttrs[attr]) {
                            case nu:
                                now = +from[attr] + pos * ms * diff[attr];
                                break;
                            case "colour":
                                now = "rgb(" + [
                                        upto255(round(from[attr].r + pos * ms * diff[attr].r)),
                                        upto255(round(from[attr].g + pos * ms * diff[attr].g)),
                                        upto255(round(from[attr].b + pos * ms * diff[attr].b))
                                    ].join(",") + ")";
                                break;
                            case "path":
                                now = [];
                                for (var i = 0, ii = from[attr].length; i < ii; i++) {
                                    now[i] = [from[attr][i][0]];
                                    for (var j = 1, jj = from[attr][i].length; j < jj; j++) {
                                        now[i][j] = +from[attr][i][j] + pos * ms * diff[attr][i][j];
                                    }
                                    now[i] = now[i].join(S);
                                }
                                now = now.join(S);
                                break;
                            case "transform":
                                if (diff[attr].real) {
                                    now = [];
                                    for (i = 0, ii = from[attr].length; i < ii; i++) {
                                        now[i] = [from[attr][i][0]];
                                        for (j = 1, jj = from[attr][i].length; j < jj; j++) {
                                            now[i][j] = from[attr][i][j] + pos * ms * diff[attr][i][j];
                                        }
                                    }
                                } else {
                                    var get = function (i) {
                                        return +from[attr][i] + pos * ms * diff[attr][i];
                                    };
                                    // now = [["r", get(2), 0, 0], ["t", get(3), get(4)], ["s", get(0), get(1), 0, 0]];
                                    now = [["m", get(0), get(1), get(2), get(3), get(4), get(5)]];
                                }
                                break;
                            case "csv":
                                if (attr == "clip-rect") {
                                    now = [];
                                    i = 4;
                                    while (i--) {
                                        now[i] = +from[attr][i] + pos * ms * diff[attr][i];
                                    }
                                }
                                break;
                            default:
                                var from2 = [][concat](from[attr]);
                                now = [];
                                i = that.paper.customAttributes[attr].length;
                                while (i--) {
                                    now[i] = +from2[i] + pos * ms * diff[attr][i];
                                }
                                break;
                        }
                        set[attr] = now;
                    }
                    that.attr(set);
                    (function (id, that, anim) {
                        setTimeout(function () {
                            eve("raphael.anim.frame." + id, that, anim);
                        });
                    })(that.id, that, e.anim);
                } else {
                    (function(f, el, a) {
                        setTimeout(function() {
                            eve("raphael.anim.frame." + el.id, el, a);
                            eve("raphael.anim.finish." + el.id, el, a);
                            R.is(f, "function") && f.call(el);
                        });
                    })(e.callback, that, e.anim);
                    that.attr(to);
                    animationElements.splice(l--, 1);
                    if (e.repeat > 1 && !e.next) {
                        for (key in to) if (to[has](key)) {
                            init[key] = e.totalOrigin[key];
                        }
                        e.el.attr(init);
                        runAnimation(e.anim, e.el, e.anim.percents[0], null, e.totalOrigin, e.repeat - 1);
                    }
                    if (e.next && !e.stop) {
                        runAnimation(e.anim, e.el, e.next, null, e.totalOrigin, e.repeat);
                    }
                }
            }
            animationElements.length && requestAnimFrame(animation);
        },
        upto255 = function (color) {
            return color > 255 ? 255 : color < 0 ? 0 : color;
        };
    /*\
     * Element.animateWith
     [ method ]
     **
     * Acts similar to @Element.animate, but ensure that given animation runs in sync with another given element.
     **
     > Parameters
     **
     - el (object) element to sync with
     - anim (object) animation to sync with
     - params (object) #optional final attributes for the element, see also @Element.attr
     - ms (number) #optional number of milliseconds for animation to run
     - easing (string) #optional easing type. Accept on of @Raphael.easing_formulas or CSS format: `cubic&#x2010;bezier(XX,&#160;XX,&#160;XX,&#160;XX)`
     - callback (function) #optional callback function. Will be called at the end of animation.
     * or
     - element (object) element to sync with
     - anim (object) animation to sync with
     - animation (object) #optional animation object, see @Raphael.animation
     **
     = (object) original element
     \*/
    elproto.animateWith = function (el, anim, params, ms, easing, callback) {
        var element = this;
        if (element.removed) {
            callback && callback.call(element);
            return element;
        }
        var a = params instanceof Animation ? params : R.animation(params, ms, easing, callback),
            x, y;
        runAnimation(a, element, a.percents[0], null, element.attr());
        for (var i = 0, ii = animationElements.length; i < ii; i++) {
            if (animationElements[i].anim == anim && animationElements[i].el == el) {
                animationElements[ii - 1].start = animationElements[i].start;
                break;
            }
        }
        return element;
        //
        //
        // var a = params ? R.animation(params, ms, easing, callback) : anim,
        //     status = element.status(anim);
        // return this.animate(a).status(a, status * anim.ms / a.ms);
    };
    function CubicBezierAtTime(t, p1x, p1y, p2x, p2y, duration) {
        var cx = 3 * p1x,
            bx = 3 * (p2x - p1x) - cx,
            ax = 1 - cx - bx,
            cy = 3 * p1y,
            by = 3 * (p2y - p1y) - cy,
            ay = 1 - cy - by;
        function sampleCurveX(t) {
            return ((ax * t + bx) * t + cx) * t;
        }
        function solve(x, epsilon) {
            var t = solveCurveX(x, epsilon);
            return ((ay * t + by) * t + cy) * t;
        }
        function solveCurveX(x, epsilon) {
            var t0, t1, t2, x2, d2, i;
            for(t2 = x, i = 0; i < 8; i++) {
                x2 = sampleCurveX(t2) - x;
                if (abs(x2) < epsilon) {
                    return t2;
                }
                d2 = (3 * ax * t2 + 2 * bx) * t2 + cx;
                if (abs(d2) < 1e-6) {
                    break;
                }
                t2 = t2 - x2 / d2;
            }
            t0 = 0;
            t1 = 1;
            t2 = x;
            if (t2 < t0) {
                return t0;
            }
            if (t2 > t1) {
                return t1;
            }
            while (t0 < t1) {
                x2 = sampleCurveX(t2);
                if (abs(x2 - x) < epsilon) {
                    return t2;
                }
                if (x > x2) {
                    t0 = t2;
                } else {
                    t1 = t2;
                }
                t2 = (t1 - t0) / 2 + t0;
            }
            return t2;
        }
        return solve(t, 1 / (200 * duration));
    }
    elproto.onAnimation = function (f) {
        f ? eve.on("raphael.anim.frame." + this.id, f) : eve.unbind("raphael.anim.frame." + this.id);
        return this;
    };
    function Animation(anim, ms) {
        var percents = [],
            newAnim = {};
        this.ms = ms;
        this.times = 1;
        if (anim) {
            for (var attr in anim) if (anim[has](attr)) {
                newAnim[toFloat(attr)] = anim[attr];
                percents.push(toFloat(attr));
            }
            percents.sort(sortByNumber);
        }
        this.anim = newAnim;
        this.top = percents[percents.length - 1];
        this.percents = percents;
    }
    /*\
     * Animation.delay
     [ method ]
     **
     * Creates a copy of existing animation object with given delay.
     **
     > Parameters
     **
     - delay (number) number of ms to pass between animation start and actual animation
     **
     = (object) new altered Animation object
     | var anim = Raphael.animation({cx: 10, cy: 20}, 2e3);
     | circle1.animate(anim); // run the given animation immediately
     | circle2.animate(anim.delay(500)); // run the given animation after 500 ms
     \*/
    Animation.prototype.delay = function (delay) {
        var a = new Animation(this.anim, this.ms);
        a.times = this.times;
        a.del = +delay || 0;
        return a;
    };
    /*\
     * Animation.repeat
     [ method ]
     **
     * Creates a copy of existing animation object with given repetition.
     **
     > Parameters
     **
     - repeat (number) number iterations of animation. For infinite animation pass `Infinity`
     **
     = (object) new altered Animation object
     \*/
    Animation.prototype.repeat = function (times) {
        var a = new Animation(this.anim, this.ms);
        a.del = this.del;
        a.times = math.floor(mmax(times, 0)) || 1;
        return a;
    };
    function runAnimation(anim, element, percent, status, totalOrigin, times) {
        percent = toFloat(percent);
        var params,
            isInAnim,
            isInAnimSet,
            percents = [],
            next,
            prev,
            timestamp,
            ms = anim.ms,
            from = {},
            to = {},
            diff = {};
        if (status) {
            for (i = 0, ii = animationElements.length; i < ii; i++) {
                var e = animationElements[i];
                if (e.el.id == element.id && e.anim == anim) {
                    if (e.percent != percent) {
                        animationElements.splice(i, 1);
                        isInAnimSet = 1;
                    } else {
                        isInAnim = e;
                    }
                    element.attr(e.totalOrigin);
                    break;
                }
            }
        } else {
            status = +to; // NaN
        }
        for (var i = 0, ii = anim.percents.length; i < ii; i++) {
            if (anim.percents[i] == percent || anim.percents[i] > status * anim.top) {
                percent = anim.percents[i];
                prev = anim.percents[i - 1] || 0;
                ms = ms / anim.top * (percent - prev);
                next = anim.percents[i + 1];
                params = anim.anim[percent];
                break;
            } else if (status) {
                element.attr(anim.anim[anim.percents[i]]);
            }
        }
        if (!params) {
            return;
        }
        if (!isInAnim) {
            for (var attr in params) if (params[has](attr)) {
                if (availableAnimAttrs[has](attr) || element.paper.customAttributes[has](attr)) {
                    from[attr] = element.attr(attr);
                    (from[attr] == null) && (from[attr] = availableAttrs[attr]);
                    to[attr] = params[attr];
                    switch (availableAnimAttrs[attr]) {
                        case nu:
                            diff[attr] = (to[attr] - from[attr]) / ms;
                            break;
                        case "colour":
                            from[attr] = R.getRGB(from[attr]);
                            var toColour = R.getRGB(to[attr]);
                            diff[attr] = {
                                r: (toColour.r - from[attr].r) / ms,
                                g: (toColour.g - from[attr].g) / ms,
                                b: (toColour.b - from[attr].b) / ms
                            };
                            break;
                        case "path":
                            var pathes = path2curve(from[attr], to[attr]),
                                toPath = pathes[1];
                            from[attr] = pathes[0];
                            diff[attr] = [];
                            for (i = 0, ii = from[attr].length; i < ii; i++) {
                                diff[attr][i] = [0];
                                for (var j = 1, jj = from[attr][i].length; j < jj; j++) {
                                    diff[attr][i][j] = (toPath[i][j] - from[attr][i][j]) / ms;
                                }
                            }
                            break;
                        case "transform":
                            var _ = element._,
                                eq = equaliseTransform(_[attr], to[attr]);
                            if (eq) {
                                from[attr] = eq.from;
                                to[attr] = eq.to;
                                diff[attr] = [];
                                diff[attr].real = true;
                                for (i = 0, ii = from[attr].length; i < ii; i++) {
                                    diff[attr][i] = [from[attr][i][0]];
                                    for (j = 1, jj = from[attr][i].length; j < jj; j++) {
                                        diff[attr][i][j] = (to[attr][i][j] - from[attr][i][j]) / ms;
                                    }
                                }
                            } else {
                                var m = (element.matrix || new Matrix),
                                    to2 = {
                                        _: {transform: _.transform},
                                        getBBox: function () {
                                            return element.getBBox(1);
                                        }
                                    };
                                from[attr] = [
                                    m.a,
                                    m.b,
                                    m.c,
                                    m.d,
                                    m.e,
                                    m.f
                                ];
                                extractTransform(to2, to[attr]);
                                to[attr] = to2._.transform;
                                diff[attr] = [
                                    (to2.matrix.a - m.a) / ms,
                                    (to2.matrix.b - m.b) / ms,
                                    (to2.matrix.c - m.c) / ms,
                                    (to2.matrix.d - m.d) / ms,
                                    (to2.matrix.e - m.e) / ms,
                                    (to2.matrix.f - m.f) / ms
                                ];
                                // from[attr] = [_.sx, _.sy, _.deg, _.dx, _.dy];
                                // var to2 = {_:{}, getBBox: function () { return element.getBBox(); }};
                                // extractTransform(to2, to[attr]);
                                // diff[attr] = [
                                //     (to2._.sx - _.sx) / ms,
                                //     (to2._.sy - _.sy) / ms,
                                //     (to2._.deg - _.deg) / ms,
                                //     (to2._.dx - _.dx) / ms,
                                //     (to2._.dy - _.dy) / ms
                                // ];
                            }
                            break;
                        case "csv":
                            var values = Str(params[attr])[split](separator),
                                from2 = Str(from[attr])[split](separator);
                            if (attr == "clip-rect") {
                                from[attr] = from2;
                                diff[attr] = [];
                                i = from2.length;
                                while (i--) {
                                    diff[attr][i] = (values[i] - from[attr][i]) / ms;
                                }
                            }
                            to[attr] = values;
                            break;
                        default:
                            values = [][concat](params[attr]);
                            from2 = [][concat](from[attr]);
                            diff[attr] = [];
                            i = element.paper.customAttributes[attr].length;
                            while (i--) {
                                diff[attr][i] = ((values[i] || 0) - (from2[i] || 0)) / ms;
                            }
                            break;
                    }
                }
            }
            var easing = params.easing,
                easyeasy = R.easing_formulas[easing];
            if (!easyeasy) {
                easyeasy = Str(easing).match(bezierrg);
                if (easyeasy && easyeasy.length == 5) {
                    var curve = easyeasy;
                    easyeasy = function (t) {
                        return CubicBezierAtTime(t, +curve[1], +curve[2], +curve[3], +curve[4], ms);
                    };
                } else {
                    easyeasy = pipe;
                }
            }
            timestamp = params.start || anim.start || +new Date;
            e = {
                anim: anim,
                percent: percent,
                timestamp: timestamp,
                start: timestamp + (anim.del || 0),
                status: 0,
                initstatus: status || 0,
                stop: false,
                ms: ms,
                easing: easyeasy,
                from: from,
                diff: diff,
                to: to,
                el: element,
                callback: params.callback,
                prev: prev,
                next: next,
                repeat: times || anim.times,
                origin: element.attr(),
                totalOrigin: totalOrigin
            };
            animationElements.push(e);
            if (status && !isInAnim && !isInAnimSet) {
                e.stop = true;
                e.start = new Date - ms * status;
                if (animationElements.length == 1) {
                    return animation();
                }
            }
            if (isInAnimSet) {
                e.start = new Date - e.ms * status;
            }
            animationElements.length == 1 && requestAnimFrame(animation);
        } else {
            isInAnim.initstatus = status;
            isInAnim.start = new Date - isInAnim.ms * status;
        }
        eve("raphael.anim.start." + element.id, element, anim);
    }
    /*\
     * Raphael.animation
     [ method ]
     **
     * Creates an animation object that can be passed to the @Element.animate or @Element.animateWith methods.
     * See also @Animation.delay and @Animation.repeat methods.
     **
     > Parameters
     **
     - params (object) final attributes for the element, see also @Element.attr
     - ms (number) number of milliseconds for animation to run
     - easing (string) #optional easing type. Accept one of @Raphael.easing_formulas or CSS format: `cubic&#x2010;bezier(XX,&#160;XX,&#160;XX,&#160;XX)`
     - callback (function) #optional callback function. Will be called at the end of animation.
     **
     = (object) @Animation
     \*/
    R.animation = function (params, ms, easing, callback) {
        if (params instanceof Animation) {
            return params;
        }
        if (R.is(easing, "function") || !easing) {
            callback = callback || easing || null;
            easing = null;
        }
        params = Object(params);
        ms = +ms || 0;
        var p = {},
            json,
            attr;
        for (attr in params) if (params[has](attr) && toFloat(attr) != attr && toFloat(attr) + "%" != attr) {
            json = true;
            p[attr] = params[attr];
        }
        if (!json) {
            // if percent-like syntax is used and end-of-all animation callback used
            if(callback){
                // find the last one
                var lastKey = 0;
                for(var i in params){
                    var percent = toInt(i);
                    if(params[has](i) && percent > lastKey){
                        lastKey = percent;
                    }
                }
                lastKey += '%';
                // if already defined callback in the last keyframe, skip
                !params[lastKey].callback && (params[lastKey].callback = callback);
            }
            return new Animation(params, ms);
        } else {
            easing && (p.easing = easing);
            callback && (p.callback = callback);
            return new Animation({100: p}, ms);
        }
    };
    /*\
     * Element.animate
     [ method ]
     **
     * Creates and starts animation for given element.
     **
     > Parameters
     **
     - params (object) final attributes for the element, see also @Element.attr
     - ms (number) number of milliseconds for animation to run
     - easing (string) #optional easing type. Accept one of @Raphael.easing_formulas or CSS format: `cubic&#x2010;bezier(XX,&#160;XX,&#160;XX,&#160;XX)`
     - callback (function) #optional callback function. Will be called at the end of animation.
     * or
     - animation (object) animation object, see @Raphael.animation
     **
     = (object) original element
     \*/
    elproto.animate = function (params, ms, easing, callback) {
        var element = this;
        if (element.removed) {
            callback && callback.call(element);
            return element;
        }
        var anim = params instanceof Animation ? params : R.animation(params, ms, easing, callback);
        runAnimation(anim, element, anim.percents[0], null, element.attr());
        return element;
    };
    /*\
     * Element.setTime
     [ method ]
     **
     * Sets the status of animation of the element in milliseconds. Similar to @Element.status method.
     **
     > Parameters
     **
     - anim (object) animation object
     - value (number) number of milliseconds from the beginning of the animation
     **
     = (object) original element if `value` is specified
     * Note, that during animation following events are triggered:
     *
     * On each animation frame event `anim.frame.<id>`, on start `anim.start.<id>` and on end `anim.finish.<id>`.
     \*/
    elproto.setTime = function (anim, value) {
        if (anim && value != null) {
            this.status(anim, mmin(value, anim.ms) / anim.ms);
        }
        return this;
    };
    /*\
     * Element.status
     [ method ]
     **
     * Gets or sets the status of animation of the element.
     **
     > Parameters
     **
     - anim (object) #optional animation object
     - value (number) #optional 0 – 1. If specified, method works like a setter and sets the status of a given animation to the value. This will cause animation to jump to the given position.
     **
     = (number) status
     * or
     = (array) status if `anim` is not specified. Array of objects in format:
     o {
     o     anim: (object) animation object
     o     status: (number) status
     o }
     * or
     = (object) original element if `value` is specified
     \*/
    elproto.status = function (anim, value) {
        var out = [],
            i = 0,
            len,
            e;
        if (value != null) {
            runAnimation(anim, this, -1, mmin(value, 1));
            return this;
        } else {
            len = animationElements.length;
            for (; i < len; i++) {
                e = animationElements[i];
                if (e.el.id == this.id && (!anim || e.anim == anim)) {
                    if (anim) {
                        return e.status;
                    }
                    out.push({
                        anim: e.anim,
                        status: e.status
                    });
                }
            }
            if (anim) {
                return 0;
            }
            return out;
        }
    };
    /*\
     * Element.pause
     [ method ]
     **
     * Stops animation of the element with ability to resume it later on.
     **
     > Parameters
     **
     - anim (object) #optional animation object
     **
     = (object) original element
     \*/
    elproto.pause = function (anim) {
        for (var i = 0; i < animationElements.length; i++) if (animationElements[i].el.id == this.id && (!anim || animationElements[i].anim == anim)) {
            if (eve("raphael.anim.pause." + this.id, this, animationElements[i].anim) !== false) {
                animationElements[i].paused = true;
            }
        }
        return this;
    };
    /*\
     * Element.resume
     [ method ]
     **
     * Resumes animation if it was paused with @Element.pause method.
     **
     > Parameters
     **
     - anim (object) #optional animation object
     **
     = (object) original element
     \*/
    elproto.resume = function (anim) {
        for (var i = 0; i < animationElements.length; i++) if (animationElements[i].el.id == this.id && (!anim || animationElements[i].anim == anim)) {
            var e = animationElements[i];
            if (eve("raphael.anim.resume." + this.id, this, e.anim) !== false) {
                delete e.paused;
                this.status(e.anim, e.status);
            }
        }
        return this;
    };
    /*\
     * Element.stop
     [ method ]
     **
     * Stops animation of the element.
     **
     > Parameters
     **
     - anim (object) #optional animation object
     **
     = (object) original element
     \*/
    elproto.stop = function (anim) {
        for (var i = 0; i < animationElements.length; i++) if (animationElements[i].el.id == this.id && (!anim || animationElements[i].anim == anim)) {
            if (eve("raphael.anim.stop." + this.id, this, animationElements[i].anim) !== false) {
                animationElements.splice(i--, 1);
            }
        }
        return this;
    };
    function stopAnimation(paper) {
        for (var i = 0; i < animationElements.length; i++) if (animationElements[i].el.paper == paper) {
            animationElements.splice(i--, 1);
        }
    }
    eve.on("raphael.remove", stopAnimation);
    eve.on("raphael.clear", stopAnimation);
    elproto.toString = function () {
        return "Rapha\xebl\u2019s object";
    };

    // Set
    var Set = function (items) {
            this.items = [];
            this.length = 0;
            this.type = "set";
            if (items) {
                for (var i = 0, ii = items.length; i < ii; i++) {
                    if (items[i] && (items[i].constructor == elproto.constructor || items[i].constructor == Set)) {
                        this[this.items.length] = this.items[this.items.length] = items[i];
                        this.length++;
                    }
                }
            }
        },
        setproto = Set.prototype;
    /*\
     * Set.push
     [ method ]
     **
     * Adds each argument to the current set.
     = (object) original element
     \*/
    setproto.push = function () {
        var item,
            len;
        for (var i = 0, ii = arguments.length; i < ii; i++) {
            item = arguments[i];
            if (item && (item.constructor == elproto.constructor || item.constructor == Set)) {
                len = this.items.length;
                this[len] = this.items[len] = item;
                this.length++;
            }
        }
        return this;
    };
    /*\
     * Set.pop
     [ method ]
     **
     * Removes last element and returns it.
     = (object) element
     \*/
    setproto.pop = function () {
        this.length && delete this[this.length--];
        return this.items.pop();
    };
    /*\
     * Set.forEach
     [ method ]
     **
     * Executes given function for each element in the set.
     *
     * If function returns `false` it will stop loop running.
     **
     > Parameters
     **
     - callback (function) function to run
     - thisArg (object) context object for the callback
     = (object) Set object
     \*/
    setproto.forEach = function (callback, thisArg) {
        for (var i = 0, ii = this.items.length; i < ii; i++) {
            if (callback.call(thisArg, this.items[i], i) === false) {
                return this;
            }
        }
        return this;
    };
    for (var method in elproto) if (elproto[has](method)) {
        setproto[method] = (function (methodname) {
            return function () {
                var arg = arguments;
                return this.forEach(function (el) {
                    el[methodname][apply](el, arg);
                });
            };
        })(method);
    }
    setproto.attr = function (name, value) {
        if (name && R.is(name, array) && R.is(name[0], "object")) {
            for (var j = 0, jj = name.length; j < jj; j++) {
                this.items[j].attr(name[j]);
            }
        } else {
            for (var i = 0, ii = this.items.length; i < ii; i++) {
                this.items[i].attr(name, value);
            }
        }
        return this;
    };
    /*\
     * Set.clear
     [ method ]
     **
     * Removes all elements from the set
     \*/
    setproto.clear = function () {
        while (this.length) {
            this.pop();
        }
    };
    /*\
     * Set.splice
     [ method ]
     **
     * Removes given element from the set
     **
     > Parameters
     **
     - index (number) position of the deletion
     - count (number) number of element to remove
     - insertion… (object) #optional elements to insert
     = (object) set elements that were deleted
     \*/
    setproto.splice = function (index, count, insertion) {
        index = index < 0 ? mmax(this.length + index, 0) : index;
        count = mmax(0, mmin(this.length - index, count));
        var tail = [],
            todel = [],
            args = [],
            i;
        for (i = 2; i < arguments.length; i++) {
            args.push(arguments[i]);
        }
        for (i = 0; i < count; i++) {
            todel.push(this[index + i]);
        }
        for (; i < this.length - index; i++) {
            tail.push(this[index + i]);
        }
        var arglen = args.length;
        for (i = 0; i < arglen + tail.length; i++) {
            this.items[index + i] = this[index + i] = i < arglen ? args[i] : tail[i - arglen];
        }
        i = this.items.length = this.length -= count - arglen;
        while (this[i]) {
            delete this[i++];
        }
        return new Set(todel);
    };
    /*\
     * Set.exclude
     [ method ]
     **
     * Removes given element from the set
     **
     > Parameters
     **
     - element (object) element to remove
     = (boolean) `true` if object was found & removed from the set
     \*/
    setproto.exclude = function (el) {
        for (var i = 0, ii = this.length; i < ii; i++) if (this[i] == el) {
            this.splice(i, 1);
            return true;
        }
    };
    setproto.animate = function (params, ms, easing, callback) {
        (R.is(easing, "function") || !easing) && (callback = easing || null);
        var len = this.items.length,
            i = len,
            item,
            set = this,
            collector;
        if (!len) {
            return this;
        }
        callback && (collector = function () {
            !--len && callback.call(set);
        });
        easing = R.is(easing, string) ? easing : collector;
        var anim = R.animation(params, ms, easing, collector);
        item = this.items[--i].animate(anim);
        while (i--) {
            this.items[i] && !this.items[i].removed && this.items[i].animateWith(item, anim, anim);
            (this.items[i] && !this.items[i].removed) || len--;
        }
        return this;
    };
    setproto.insertAfter = function (el) {
        var i = this.items.length;
        while (i--) {
            this.items[i].insertAfter(el);
        }
        return this;
    };
    setproto.getBBox = function () {
        var x = [],
            y = [],
            x2 = [],
            y2 = [];
        for (var i = this.items.length; i--;) if (!this.items[i].removed) {
            var box = this.items[i].getBBox();
            x.push(box.x);
            y.push(box.y);
            x2.push(box.x + box.width);
            y2.push(box.y + box.height);
        }
        x = mmin[apply](0, x);
        y = mmin[apply](0, y);
        x2 = mmax[apply](0, x2);
        y2 = mmax[apply](0, y2);
        return {
            x: x,
            y: y,
            x2: x2,
            y2: y2,
            width: x2 - x,
            height: y2 - y
        };
    };
    setproto.clone = function (s) {
        s = this.paper.set();
        for (var i = 0, ii = this.items.length; i < ii; i++) {
            s.push(this.items[i].clone());
        }
        return s;
    };
    setproto.toString = function () {
        return "Rapha\xebl\u2018s set";
    };

    setproto.glow = function(glowConfig) {
        var ret = this.paper.set();
        this.forEach(function(shape, index){
            var g = shape.glow(glowConfig);
            if(g != null){
                g.forEach(function(shape2, index2){
                    ret.push(shape2);
                });
            }
        });
        return ret;
    };


    /*\
     * Set.isPointInside
     [ method ]
     **
     * Determine if given point is inside this set’s elements
     **
     > Parameters
     **
     - x (number) x coordinate of the point
     - y (number) y coordinate of the point
     = (boolean) `true` if point is inside any of the set's elements
     \*/
    setproto.isPointInside = function (x, y) {
        var isPointInside = false;
        this.forEach(function (el) {
            if (el.isPointInside(x, y)) {
                isPointInside = true;
                return false; // stop loop
            }
        });
        return isPointInside;
    };

    /*\
     * Raphael.registerFont
     [ method ]
     **
     * Adds given font to the registered set of font for Raphaël. Should be used as an internal call from within Cufón’s font file.
     * Returns original parameter, so it could be used with chaining.
     # <a href="http://wiki.github.com/sorccu/cufon/about">More about Cufón and how to convert your font form TTF, OTF, etc to JavaScript file.</a>
     **
     > Parameters
     **
     - font (object) the font to register
     = (object) the font you passed in
     > Usage
     | Cufon.registerFont(Raphael.registerFont({…}));
     \*/
    R.registerFont = function (font) {
        if (!font.face) {
            return font;
        }
        this.fonts = this.fonts || {};
        var fontcopy = {
                w: font.w,
                face: {},
                glyphs: {}
            },
            family = font.face["font-family"];
        for (var prop in font.face) if (font.face[has](prop)) {
            fontcopy.face[prop] = font.face[prop];
        }
        if (this.fonts[family]) {
            this.fonts[family].push(fontcopy);
        } else {
            this.fonts[family] = [fontcopy];
        }
        if (!font.svg) {
            fontcopy.face["units-per-em"] = toInt(font.face["units-per-em"], 10);
            for (var glyph in font.glyphs) if (font.glyphs[has](glyph)) {
                var path = font.glyphs[glyph];
                fontcopy.glyphs[glyph] = {
                    w: path.w,
                    k: {},
                    d: path.d && "M" + path.d.replace(/[mlcxtrv]/g, function (command) {
                        return {l: "L", c: "C", x: "z", t: "m", r: "l", v: "c"}[command] || "M";
                    }) + "z"
                };
                if (path.k) {
                    for (var k in path.k) if (path[has](k)) {
                        fontcopy.glyphs[glyph].k[k] = path.k[k];
                    }
                }
            }
        }
        return font;
    };
    /*\
     * Paper.getFont
     [ method ]
     **
     * Finds font object in the registered font by given parameters. You could specify only one word from the font name, like “Myriad” for “Myriad Pro”.
     **
     > Parameters
     **
     - family (string) font family name or any word from it
     - weight (string) #optional font weight
     - style (string) #optional font style
     - stretch (string) #optional font stretch
     = (object) the font object
     > Usage
     | paper.print(100, 100, "Test string", paper.getFont("Times", 800), 30);
     \*/
    paperproto.getFont = function (family, weight, style, stretch) {
        stretch = stretch || "normal";
        style = style || "normal";
        weight = +weight || {normal: 400, bold: 700, lighter: 300, bolder: 800}[weight] || 400;
        if (!R.fonts) {
            return;
        }
        var font = R.fonts[family];
        if (!font) {
            var name = new RegExp("(^|\\s)" + family.replace(/[^\w\d\s+!~.:_-]/g, E) + "(\\s|$)", "i");
            for (var fontName in R.fonts) if (R.fonts[has](fontName)) {
                if (name.test(fontName)) {
                    font = R.fonts[fontName];
                    break;
                }
            }
        }
        var thefont;
        if (font) {
            for (var i = 0, ii = font.length; i < ii; i++) {
                thefont = font[i];
                if (thefont.face["font-weight"] == weight && (thefont.face["font-style"] == style || !thefont.face["font-style"]) && thefont.face["font-stretch"] == stretch) {
                    break;
                }
            }
        }
        return thefont;
    };
    /*\
     * Paper.print
     [ method ]
     **
     * Creates path that represent given text written using given font at given position with given size.
     * Result of the method is path element that contains whole text as a separate path.
     **
     > Parameters
     **
     - x (number) x position of the text
     - y (number) y position of the text
     - string (string) text to print
     - font (object) font object, see @Paper.getFont
     - size (number) #optional size of the font, default is `16`
     - origin (string) #optional could be `"baseline"` or `"middle"`, default is `"middle"`
     - letter_spacing (number) #optional number in range `-1..1`, default is `0`
     - line_spacing (number) #optional number in range `1..3`, default is `1`
     = (object) resulting path element, which consist of all letters
     > Usage
     | var txt = r.print(10, 50, "print", r.getFont("Museo"), 30).attr({fill: "#fff"});
     \*/
    paperproto.print = function (x, y, string, font, size, origin, letter_spacing, line_spacing) {
        origin = origin || "middle"; // baseline|middle
        letter_spacing = mmax(mmin(letter_spacing || 0, 1), -1);
        line_spacing = mmax(mmin(line_spacing || 1, 3), 1);
        var letters = Str(string)[split](E),
            shift = 0,
            notfirst = 0,
            path = E,
            scale;
        R.is(font, "string") && (font = this.getFont(font));
        if (font) {
            scale = (size || 16) / font.face["units-per-em"];
            var bb = font.face.bbox[split](separator),
                top = +bb[0],
                lineHeight = bb[3] - bb[1],
                shifty = 0,
                height = +bb[1] + (origin == "baseline" ? lineHeight + (+font.face.descent) : lineHeight / 2);
            for (var i = 0, ii = letters.length; i < ii; i++) {
                if (letters[i] == "\n") {
                    shift = 0;
                    curr = 0;
                    notfirst = 0;
                    shifty += lineHeight * line_spacing;
                } else {
                    var prev = notfirst && font.glyphs[letters[i - 1]] || {},
                        curr = font.glyphs[letters[i]];
                    shift += notfirst ? (prev.w || font.w) + (prev.k && prev.k[letters[i]] || 0) + (font.w * letter_spacing) : 0;
                    notfirst = 1;
                }
                if (curr && curr.d) {
                    path += R.transformPath(curr.d, ["t", shift * scale, shifty * scale, "s", scale, scale, top, height, "t", (x - top) / scale, (y - height) / scale]);
                }
            }
        }
        return this.path(path).attr({
            fill: "#000",
            stroke: "none"
        });
    };

    /*\
     * Paper.add
     [ method ]
     **
     * Imports elements in JSON array in format `{type: type, <attributes>}`
     **
     > Parameters
     **
     - json (array)
     = (object) resulting set of imported elements
     > Usage
     | paper.add([
     |     {
     |         type: "circle",
     |         cx: 10,
     |         cy: 10,
     |         r: 5
     |     },
     |     {
     |         type: "rect",
     |         x: 10,
     |         y: 10,
     |         width: 10,
     |         height: 10,
     |         fill: "#fc0"
     |     }
     | ]);
     \*/
    paperproto.add = function (json) {
        if (R.is(json, "array")) {
            var res = this.set(),
                i = 0,
                ii = json.length,
                j;
            for (; i < ii; i++) {
                j = json[i] || {};
                elements[has](j.type) && res.push(this[j.type]().attr(j));
            }
        }
        return res;
    };

    /*\
     * Raphael.format
     [ method ]
     **
     * Simple format function. Replaces construction of type “`{<number>}`” to the corresponding argument.
     **
     > Parameters
     **
     - token (string) string to format
     - … (string) rest of arguments will be treated as parameters for replacement
     = (string) formated string
     > Usage
     | var x = 10,
     |     y = 20,
     |     width = 40,
     |     height = 50;
     | // this will draw a rectangular shape equivalent to "M10,20h40v50h-40z"
     | paper.path(Raphael.format("M{0},{1}h{2}v{3}h{4}z", x, y, width, height, -width));
     \*/
    R.format = function (token, params) {
        var args = R.is(params, array) ? [0][concat](params) : arguments;
        token && R.is(token, string) && args.length - 1 && (token = token.replace(formatrg, function (str, i) {
            return args[++i] == null ? E : args[i];
        }));
        return token || E;
    };
    /*\
     * Raphael.fullfill
     [ method ]
     **
     * A little bit more advanced format function than @Raphael.format. Replaces construction of type “`{<name>}`” to the corresponding argument.
     **
     > Parameters
     **
     - token (string) string to format
     - json (object) object which properties will be used as a replacement
     = (string) formated string
     > Usage
     | // this will draw a rectangular shape equivalent to "M10,20h40v50h-40z"
     | paper.path(Raphael.fullfill("M{x},{y}h{dim.width}v{dim.height}h{dim['negative width']}z", {
     |     x: 10,
     |     y: 20,
     |     dim: {
     |         width: 40,
     |         height: 50,
     |         "negative width": -40
     |     }
     | }));
     \*/
    R.fullfill = (function () {
        var tokenRegex = /\{([^\}]+)\}/g,
            objNotationRegex = /(?:(?:^|\.)(.+?)(?=\[|\.|$|\()|\[('|")(.+?)\2\])(\(\))?/g, // matches .xxxxx or ["xxxxx"] to run over object properties
            replacer = function (all, key, obj) {
                var res = obj;
                key.replace(objNotationRegex, function (all, name, quote, quotedName, isFunc) {
                    name = name || quotedName;
                    if (res) {
                        if (name in res) {
                            res = res[name];
                        }
                        typeof res == "function" && isFunc && (res = res());
                    }
                });
                res = (res == null || res == obj ? all : res) + "";
                return res;
            };
        return function (str, obj) {
            return String(str).replace(tokenRegex, function (all, key) {
                return replacer(all, key, obj);
            });
        };
    })();
    /*\
     * Raphael.ninja
     [ method ]
     **
     * If you want to leave no trace of Raphaël (Well, Raphaël creates only one global variable `Raphael`, but anyway.) You can use `ninja` method.
     * Beware, that in this case plugins could stop working, because they are depending on global variable existence.
     **
     = (object) Raphael object
     > Usage
     | (function (local_raphael) {
     |     var paper = local_raphael(10, 10, 320, 200);
     |     …
     | })(Raphael.ninja());
     \*/
    R.ninja = function () {
        oldRaphael.was ? (g.win.Raphael = oldRaphael.is) : delete Raphael;
        return R;
    };
    /*\
     * Raphael.st
     [ property (object) ]
     **
     * You can add your own method to elements and sets. It is wise to add a set method for each element method
     * you added, so you will be able to call the same method on sets too.
     **
     * See also @Raphael.el.
     > Usage
     | Raphael.el.red = function () {
     |     this.attr({fill: "#f00"});
     | };
     | Raphael.st.red = function () {
     |     this.forEach(function (el) {
     |         el.red();
     |     });
     | };
     | // then use it
     | paper.set(paper.circle(100, 100, 20), paper.circle(110, 100, 20)).red();
     \*/
    R.st = setproto;

    eve.on("raphael.DOMload", function () {
        loaded = true;
    });

    // Firefox <3.6 fix: http://webreflection.blogspot.com/2009/11/195-chars-to-help-lazy-loading.html
    (function (doc, loaded, f) {
        if (doc.readyState == null && doc.addEventListener){
            doc.addEventListener(loaded, f = function () {
                doc.removeEventListener(loaded, f, false);
                doc.readyState = "complete";
            }, false);
            doc.readyState = "loading";
        }
        function isLoaded() {
            (/in/).test(doc.readyState) ? setTimeout(isLoaded, 9) : R.eve("raphael.DOMload");
        }
        isLoaded();
    })(document, "DOMContentLoaded");

    return R;
}));

// ┌─────────────────────────────────────────────────────────────────────┐ \\
// │ Raphaël 2.1.4 - JavaScript Vector Library                       │ \\
// ├─────────────────────────────────────────────────────────────────────┤ \\
// │ SVG Module                                                          │ \\
// ├─────────────────────────────────────────────────────────────────────┤ \\
// │ Copyright (c) 2008-2011 Dmitry Baranovskiy (http://raphaeljs.com)   │ \\
// │ Copyright (c) 2008-2011 Sencha Labs (http://sencha.com)             │ \\
// │ Licensed under the MIT (http://raphaeljs.com/license.html) license. │ \\
// └─────────────────────────────────────────────────────────────────────┘ \\

(function (glob, factory) {
    if (typeof define === "function" && define.amd) {
        define("raphael.svg", ["raphael.core"], function(raphael) {
            return factory(raphael);
        });
    } else if (typeof exports === "object") {
        factory(require("raphael.core"));
    } else {
        factory(glob.Raphael);
    }
}(this, function(R) {
    if (R && !R.svg) {
        return;
    }

    var has = "hasOwnProperty",
        Str = String,
        toFloat = parseFloat,
        toInt = parseInt,
        math = Math,
        mmax = math.max,
        abs = math.abs,
        pow = math.pow,
        separator = /[, ]+/,
        eve = R.eve,
        E = "",
        S = " ";
    var xlink = "http://www.w3.org/1999/xlink",
        markers = {
            block: "M5,0 0,2.5 5,5z",
            classic: "M5,0 0,2.5 5,5 3.5,3 3.5,2z",
            diamond: "M2.5,0 5,2.5 2.5,5 0,2.5z",
            open: "M6,1 1,3.5 6,6",
            oval: "M2.5,0A2.5,2.5,0,0,1,2.5,5 2.5,2.5,0,0,1,2.5,0z"
        },
        markerCounter = {};
    R.toString = function () {
        return  "Your browser supports SVG.\nYou are running Rapha\xebl " + this.version;
    };
    var $ = function (el, attr) {
            if (attr) {
                if (typeof el == "string") {
                    el = $(el);
                }
                for (var key in attr) if (attr[has](key)) {
                    if (key.substring(0, 6) == "xlink:") {
                        el.setAttributeNS(xlink, key.substring(6), Str(attr[key]));
                    } else {
                        el.setAttribute(key, Str(attr[key]));
                    }
                }
            } else {
                el = R._g.doc.createElementNS("http://www.w3.org/2000/svg", el);
                el.style && (el.style.webkitTapHighlightColor = "rgba(0,0,0,0)");
            }
            return el;
        },
        addGradientFill = function (element, gradient) {
            var type = "linear",
                id = element.id + gradient,
                fx = .5, fy = .5,
                o = element.node,
                SVG = element.paper,
                s = o.style,
                el = R._g.doc.getElementById(id);
            if (!el) {
                gradient = Str(gradient).replace(R._radial_gradient, function (all, _fx, _fy) {
                    type = "radial";
                    if (_fx && _fy) {
                        fx = toFloat(_fx);
                        fy = toFloat(_fy);
                        var dir = ((fy > .5) * 2 - 1);
                        pow(fx - .5, 2) + pow(fy - .5, 2) > .25 &&
                        (fy = math.sqrt(.25 - pow(fx - .5, 2)) * dir + .5) &&
                        fy != .5 &&
                        (fy = fy.toFixed(5) - 1e-5 * dir);
                    }
                    return E;
                });
                gradient = gradient.split(/\s*\-\s*/);
                if (type == "linear") {
                    var angle = gradient.shift();
                    angle = -toFloat(angle);
                    if (isNaN(angle)) {
                        return null;
                    }
                    var vector = [0, 0, math.cos(R.rad(angle)), math.sin(R.rad(angle))],
                        max = 1 / (mmax(abs(vector[2]), abs(vector[3])) || 1);
                    vector[2] *= max;
                    vector[3] *= max;
                    if (vector[2] < 0) {
                        vector[0] = -vector[2];
                        vector[2] = 0;
                    }
                    if (vector[3] < 0) {
                        vector[1] = -vector[3];
                        vector[3] = 0;
                    }
                }
                var dots = R._parseDots(gradient);
                if (!dots) {
                    return null;
                }
                id = id.replace(/[\(\)\s,\xb0#]/g, "_");

                if (element.gradient && id != element.gradient.id) {
                    SVG.defs.removeChild(element.gradient);
                    delete element.gradient;
                }

                if (!element.gradient) {
                    el = $(type + "Gradient", {id: id});
                    element.gradient = el;
                    $(el, type == "radial" ? {
                        fx: fx,
                        fy: fy
                    } : {
                        x1: vector[0],
                        y1: vector[1],
                        x2: vector[2],
                        y2: vector[3],
                        gradientTransform: element.matrix.invert()
                    });
                    SVG.defs.appendChild(el);
                    for (var i = 0, ii = dots.length; i < ii; i++) {
                        el.appendChild($("stop", {
                            offset: dots[i].offset ? dots[i].offset : i ? "100%" : "0%",
                            "stop-color": dots[i].color || "#fff",
                            "stop-opacity": isFinite(dots[i].opacity) ? dots[i].opacity : 1
                        }));
                    }
                }
            }
            $(o, {
                fill: "url('" + document.location.origin + document.location.pathname + "#" + id + "')",
                opacity: 1,
                "fill-opacity": 1
            });
            s.fill = E;
            s.opacity = 1;
            s.fillOpacity = 1;
            return 1;
        },
        updatePosition = function (o) {
            var bbox = o.getBBox(1);
            $(o.pattern, {patternTransform: o.matrix.invert() + " translate(" + bbox.x + "," + bbox.y + ")"});
        },
        addArrow = function (o, value, isEnd) {
            if (o.type == "path") {
                var values = Str(value).toLowerCase().split("-"),
                    p = o.paper,
                    se = isEnd ? "end" : "start",
                    node = o.node,
                    attrs = o.attrs,
                    stroke = attrs["stroke-width"],
                    i = values.length,
                    type = "classic",
                    from,
                    to,
                    dx,
                    refX,
                    attr,
                    w = 3,
                    h = 3,
                    t = 5;
                while (i--) {
                    switch (values[i]) {
                        case "block":
                        case "classic":
                        case "oval":
                        case "diamond":
                        case "open":
                        case "none":
                            type = values[i];
                            break;
                        case "wide": h = 5; break;
                        case "narrow": h = 2; break;
                        case "long": w = 5; break;
                        case "short": w = 2; break;
                    }
                }
                if (type == "open") {
                    w += 2;
                    h += 2;
                    t += 2;
                    dx = 1;
                    refX = isEnd ? 4 : 1;
                    attr = {
                        fill: "none",
                        stroke: attrs.stroke
                    };
                } else {
                    refX = dx = w / 2;
                    attr = {
                        fill: attrs.stroke,
                        stroke: "none"
                    };
                }
                if (o._.arrows) {
                    if (isEnd) {
                        o._.arrows.endPath && markerCounter[o._.arrows.endPath]--;
                        o._.arrows.endMarker && markerCounter[o._.arrows.endMarker]--;
                    } else {
                        o._.arrows.startPath && markerCounter[o._.arrows.startPath]--;
                        o._.arrows.startMarker && markerCounter[o._.arrows.startMarker]--;
                    }
                } else {
                    o._.arrows = {};
                }
                if (type != "none") {
                    var pathId = "raphael-marker-" + type,
                        markerId = "raphael-marker-" + se + type + w + h + "-obj" + o.id;
                    if (!R._g.doc.getElementById(pathId)) {
                        p.defs.appendChild($($("path"), {
                            "stroke-linecap": "round",
                            d: markers[type],
                            id: pathId
                        }));
                        markerCounter[pathId] = 1;
                    } else {
                        markerCounter[pathId]++;
                    }
                    var marker = R._g.doc.getElementById(markerId),
                        use;
                    if (!marker) {
                        marker = $($("marker"), {
                            id: markerId,
                            markerHeight: h,
                            markerWidth: w,
                            orient: "auto",
                            refX: refX,
                            refY: h / 2
                        });
                        use = $($("use"), {
                            "xlink:href": "#" + pathId,
                            transform: (isEnd ? "rotate(180 " + w / 2 + " " + h / 2 + ") " : E) + "scale(" + w / t + "," + h / t + ")",
                            "stroke-width": (1 / ((w / t + h / t) / 2)).toFixed(4)
                        });
                        marker.appendChild(use);
                        p.defs.appendChild(marker);
                        markerCounter[markerId] = 1;
                    } else {
                        markerCounter[markerId]++;
                        use = marker.getElementsByTagName("use")[0];
                    }
                    $(use, attr);
                    var delta = dx * (type != "diamond" && type != "oval");
                    if (isEnd) {
                        from = o._.arrows.startdx * stroke || 0;
                        to = R.getTotalLength(attrs.path) - delta * stroke;
                    } else {
                        from = delta * stroke;
                        to = R.getTotalLength(attrs.path) - (o._.arrows.enddx * stroke || 0);
                    }
                    attr = {};
                    attr["marker-" + se] = "url(#" + markerId + ")";
                    if (to || from) {
                        attr.d = R.getSubpath(attrs.path, from, to);
                    }
                    $(node, attr);
                    o._.arrows[se + "Path"] = pathId;
                    o._.arrows[se + "Marker"] = markerId;
                    o._.arrows[se + "dx"] = delta;
                    o._.arrows[se + "Type"] = type;
                    o._.arrows[se + "String"] = value;
                } else {
                    if (isEnd) {
                        from = o._.arrows.startdx * stroke || 0;
                        to = R.getTotalLength(attrs.path) - from;
                    } else {
                        from = 0;
                        to = R.getTotalLength(attrs.path) - (o._.arrows.enddx * stroke || 0);
                    }
                    o._.arrows[se + "Path"] && $(node, {d: R.getSubpath(attrs.path, from, to)});
                    delete o._.arrows[se + "Path"];
                    delete o._.arrows[se + "Marker"];
                    delete o._.arrows[se + "dx"];
                    delete o._.arrows[se + "Type"];
                    delete o._.arrows[se + "String"];
                }
                for (attr in markerCounter) if (markerCounter[has](attr) && !markerCounter[attr]) {
                    var item = R._g.doc.getElementById(attr);
                    item && item.parentNode.removeChild(item);
                }
            }
        },
        dasharray = {
            "-": [3, 1],
            ".": [1, 1],
            "-.": [3, 1, 1, 1],
            "-..": [3, 1, 1, 1, 1, 1],
            ". ": [1, 3],
            "- ": [4, 3],
            "--": [8, 3],
            "- .": [4, 3, 1, 3],
            "--.": [8, 3, 1, 3],
            "--..": [8, 3, 1, 3, 1, 3]
        },
        addDashes = function (o, value, params) {
            value = dasharray[Str(value).toLowerCase()];
            if (value) {
                var width = o.attrs["stroke-width"] || "1",
                    butt = {round: width, square: width, butt: 0}[o.attrs["stroke-linecap"] || params["stroke-linecap"]] || 0,
                    dashes = [],
                    i = value.length;
                while (i--) {
                    dashes[i] = value[i] * width + ((i % 2) ? 1 : -1) * butt;
                }
                $(o.node, {"stroke-dasharray": dashes.join(",")});
            }
            else {
                $(o.node, {"stroke-dasharray": "none"});
            }
        },
        setFillAndStroke = function (o, params) {
            var node = o.node,
                attrs = o.attrs,
                vis = node.style.visibility;
            node.style.visibility = "hidden";
            for (var att in params) {
                if (params[has](att)) {
                    if (!R._availableAttrs[has](att)) {
                        continue;
                    }
                    var value = params[att];
                    attrs[att] = value;
                    switch (att) {
                        case "blur":
                            o.blur(value);
                            break;
                        case "title":
                            var title = node.getElementsByTagName("title");

                            // Use the existing <title>.
                            if (title.length && (title = title[0])) {
                                title.firstChild.nodeValue = value;
                            } else {
                                title = $("title");
                                var val = R._g.doc.createTextNode(value);
                                title.appendChild(val);
                                node.appendChild(title);
                            }
                            break;
                        case "href":
                        case "target":
                            var pn = node.parentNode;
                            if (pn.tagName.toLowerCase() != "a") {
                                var hl = $("a");
                                pn.insertBefore(hl, node);
                                hl.appendChild(node);
                                pn = hl;
                            }
                            if (att == "target") {
                                pn.setAttributeNS(xlink, "show", value == "blank" ? "new" : value);
                            } else {
                                pn.setAttributeNS(xlink, att, value);
                            }
                            break;
                        case "cursor":
                            node.style.cursor = value;
                            break;
                        case "transform":
                            o.transform(value);
                            break;
                        case "arrow-start":
                            addArrow(o, value);
                            break;
                        case "arrow-end":
                            addArrow(o, value, 1);
                            break;
                        case "clip-rect":
                            var rect = Str(value).split(separator);
                            if (rect.length == 4) {
                                o.clip && o.clip.parentNode.parentNode.removeChild(o.clip.parentNode);
                                var el = $("clipPath"),
                                    rc = $("rect");
                                el.id = R.createUUID();
                                $(rc, {
                                    x: rect[0],
                                    y: rect[1],
                                    width: rect[2],
                                    height: rect[3]
                                });
                                el.appendChild(rc);
                                o.paper.defs.appendChild(el);
                                $(node, {"clip-path": "url(#" + el.id + ")"});
                                o.clip = rc;
                            }
                            if (!value) {
                                var path = node.getAttribute("clip-path");
                                if (path) {
                                    var clip = R._g.doc.getElementById(path.replace(/(^url\(#|\)$)/g, E));
                                    clip && clip.parentNode.removeChild(clip);
                                    $(node, {"clip-path": E});
                                    delete o.clip;
                                }
                            }
                            break;
                        case "path":
                            if (o.type == "path") {
                                $(node, {d: value ? attrs.path = R._pathToAbsolute(value) : "M0,0"});
                                o._.dirty = 1;
                                if (o._.arrows) {
                                    "startString" in o._.arrows && addArrow(o, o._.arrows.startString);
                                    "endString" in o._.arrows && addArrow(o, o._.arrows.endString, 1);
                                }
                            }
                            break;
                        case "width":
                            node.setAttribute(att, value);
                            o._.dirty = 1;
                            if (attrs.fx) {
                                att = "x";
                                value = attrs.x;
                            } else {
                                break;
                            }
                        case "x":
                            if (attrs.fx) {
                                value = -attrs.x - (attrs.width || 0);
                            }
                        case "rx":
                            if (att == "rx" && o.type == "rect") {
                                break;
                            }
                        case "cx":
                            node.setAttribute(att, value);
                            o.pattern && updatePosition(o);
                            o._.dirty = 1;
                            break;
                        case "height":
                            node.setAttribute(att, value);
                            o._.dirty = 1;
                            if (attrs.fy) {
                                att = "y";
                                value = attrs.y;
                            } else {
                                break;
                            }
                        case "y":
                            if (attrs.fy) {
                                value = -attrs.y - (attrs.height || 0);
                            }
                        case "ry":
                            if (att == "ry" && o.type == "rect") {
                                break;
                            }
                        case "cy":
                            node.setAttribute(att, value);
                            o.pattern && updatePosition(o);
                            o._.dirty = 1;
                            break;
                        case "r":
                            if (o.type == "rect") {
                                $(node, {rx: value, ry: value});
                            } else {
                                node.setAttribute(att, value);
                            }
                            o._.dirty = 1;
                            break;
                        case "src":
                            if (o.type == "image") {
                                node.setAttributeNS(xlink, "href", value);
                            }
                            break;
                        case "stroke-width":
                            if (o._.sx != 1 || o._.sy != 1) {
                                value /= mmax(abs(o._.sx), abs(o._.sy)) || 1;
                            }
                            node.setAttribute(att, value);
                            if (attrs["stroke-dasharray"]) {
                                addDashes(o, attrs["stroke-dasharray"], params);
                            }
                            if (o._.arrows) {
                                "startString" in o._.arrows && addArrow(o, o._.arrows.startString);
                                "endString" in o._.arrows && addArrow(o, o._.arrows.endString, 1);
                            }
                            break;
                        case "stroke-dasharray":
                            addDashes(o, value, params);
                            break;
                        case "fill":
                            var isURL = Str(value).match(R._ISURL);
                            if (isURL) {
                                el = $("pattern");
                                var ig = $("image");
                                el.id = R.createUUID();
                                $(el, {x: 0, y: 0, patternUnits: "userSpaceOnUse", height: 1, width: 1});
                                $(ig, {x: 0, y: 0, "xlink:href": isURL[1]});
                                el.appendChild(ig);

                                (function (el) {
                                    R._preload(isURL[1], function () {
                                        var w = this.offsetWidth,
                                            h = this.offsetHeight;
                                        $(el, {width: w, height: h});
                                        $(ig, {width: w, height: h});
                                    });
                                })(el);
                                o.paper.defs.appendChild(el);
                                $(node, {fill: "url(#" + el.id + ")"});
                                o.pattern = el;
                                o.pattern && updatePosition(o);
                                break;
                            }
                            var clr = R.getRGB(value);
                            if (!clr.error) {
                                delete params.gradient;
                                delete attrs.gradient;
                                !R.is(attrs.opacity, "undefined") &&
                                R.is(params.opacity, "undefined") &&
                                $(node, {opacity: attrs.opacity});
                                !R.is(attrs["fill-opacity"], "undefined") &&
                                R.is(params["fill-opacity"], "undefined") &&
                                $(node, {"fill-opacity": attrs["fill-opacity"]});
                            } else if ((o.type == "circle" || o.type == "ellipse" || Str(value).charAt() != "r") && addGradientFill(o, value)) {
                                if ("opacity" in attrs || "fill-opacity" in attrs) {
                                    var gradient = R._g.doc.getElementById(node.getAttribute("fill").replace(/^url\(#|\)$/g, E));
                                    if (gradient) {
                                        var stops = gradient.getElementsByTagName("stop");
                                        $(stops[stops.length - 1], {"stop-opacity": ("opacity" in attrs ? attrs.opacity : 1) * ("fill-opacity" in attrs ? attrs["fill-opacity"] : 1)});
                                    }
                                }
                                attrs.gradient = value;
                                attrs.fill = "none";
                                break;
                            }
                            clr[has]("opacity") && $(node, {"fill-opacity": clr.opacity > 1 ? clr.opacity / 100 : clr.opacity});
                        case "stroke":
                            clr = R.getRGB(value);
                            node.setAttribute(att, clr.hex);
                            att == "stroke" && clr[has]("opacity") && $(node, {"stroke-opacity": clr.opacity > 1 ? clr.opacity / 100 : clr.opacity});
                            if (att == "stroke" && o._.arrows) {
                                "startString" in o._.arrows && addArrow(o, o._.arrows.startString);
                                "endString" in o._.arrows && addArrow(o, o._.arrows.endString, 1);
                            }
                            break;
                        case "gradient":
                            (o.type == "circle" || o.type == "ellipse" || Str(value).charAt() != "r") && addGradientFill(o, value);
                            break;
                        case "opacity":
                            if (attrs.gradient && !attrs[has]("stroke-opacity")) {
                                $(node, {"stroke-opacity": value > 1 ? value / 100 : value});
                            }
                        // fall
                        case "fill-opacity":
                            if (attrs.gradient) {
                                gradient = R._g.doc.getElementById(node.getAttribute("fill").replace(/^url\(#|\)$/g, E));
                                if (gradient) {
                                    stops = gradient.getElementsByTagName("stop");
                                    $(stops[stops.length - 1], {"stop-opacity": value});
                                }
                                break;
                            }
                        default:
                            att == "font-size" && (value = toInt(value, 10) + "px");
                            var cssrule = att.replace(/(\-.)/g, function (w) {
                                return w.substring(1).toUpperCase();
                            });
                            node.style[cssrule] = value;
                            o._.dirty = 1;
                            node.setAttribute(att, value);
                            break;
                    }
                }
            }

            tuneText(o, params);
            node.style.visibility = vis;
        },
        leading = 1.2,
        tuneText = function (el, params) {
            if (el.type != "text" || !(params[has]("text") || params[has]("font") || params[has]("font-size") || params[has]("x") || params[has]("y"))) {
                return;
            }
            var a = el.attrs,
                node = el.node,
                fontSize = node.firstChild ? toInt(R._g.doc.defaultView.getComputedStyle(node.firstChild, E).getPropertyValue("font-size"), 10) : 10;

            if (params[has]("text")) {
                a.text = params.text;
                while (node.firstChild) {
                    node.removeChild(node.firstChild);
                }
                var texts = Str(params.text).split("\n"),
                    tspans = [],
                    tspan;
                for (var i = 0, ii = texts.length; i < ii; i++) {
                    tspan = $("tspan");
                    i && $(tspan, {dy: fontSize * leading, x: a.x});
                    tspan.appendChild(R._g.doc.createTextNode(texts[i]));
                    node.appendChild(tspan);
                    tspans[i] = tspan;
                }
            } else {
                tspans = node.getElementsByTagName("tspan");
                for (i = 0, ii = tspans.length; i < ii; i++) if (i) {
                    $(tspans[i], {dy: fontSize * leading, x: a.x});
                } else {
                    $(tspans[0], {dy: 0});
                }
            }
            $(node, {x: a.x, y: a.y});
            el._.dirty = 1;
            var bb = el._getBBox(),
                dif = a.y - (bb.y + bb.height / 2);
            dif && R.is(dif, "finite") && $(tspans[0], {dy: dif});
        },
        getRealNode = function (node) {
            if (node.parentNode && node.parentNode.tagName.toLowerCase() === "a") {
                return node.parentNode;
            } else {
                return node;
            }
        },
        Element = function (node, svg) {
            var X = 0,
                Y = 0;
            /*\
             * Element.node
             [ property (object) ]
             **
             * Gives you a reference to the DOM object, so you can assign event handlers or just mess around.
             **
             * Note: Don’t mess with it.
             > Usage
             | // draw a circle at coordinate 10,10 with radius of 10
             | var c = paper.circle(10, 10, 10);
             | c.node.onclick = function () {
             |     c.attr("fill", "red");
             | };
             \*/
            this[0] = this.node = node;
            /*\
             * Element.raphael
             [ property (object) ]
             **
             * Internal reference to @Raphael object. In case it is not available.
             > Usage
             | Raphael.el.red = function () {
             |     var hsb = this.paper.raphael.rgb2hsb(this.attr("fill"));
             |     hsb.h = 1;
             |     this.attr({fill: this.paper.raphael.hsb2rgb(hsb).hex});
             | }
             \*/
            node.raphael = true;
            /*\
             * Element.id
             [ property (number) ]
             **
             * Unique id of the element. Especially useful when you want to listen to events of the element,
             * because all events are fired in format `<module>.<action>.<id>`. Also useful for @Paper.getById method.
             \*/
            this.id = R._oid++;
            node.raphaelid = this.id;
            this.matrix = R.matrix();
            this.realPath = null;
            /*\
             * Element.paper
             [ property (object) ]
             **
             * Internal reference to “paper” where object drawn. Mainly for use in plugins and element extensions.
             > Usage
             | Raphael.el.cross = function () {
             |     this.attr({fill: "red"});
             |     this.paper.path("M10,10L50,50M50,10L10,50")
             |         .attr({stroke: "red"});
             | }
             \*/
            this.paper = svg;
            this.attrs = this.attrs || {};
            this._ = {
                transform: [],
                sx: 1,
                sy: 1,
                deg: 0,
                dx: 0,
                dy: 0,
                dirty: 1
            };
            !svg.bottom && (svg.bottom = this);
            /*\
             * Element.prev
             [ property (object) ]
             **
             * Reference to the previous element in the hierarchy.
             \*/
            this.prev = svg.top;
            svg.top && (svg.top.next = this);
            svg.top = this;
            /*\
             * Element.next
             [ property (object) ]
             **
             * Reference to the next element in the hierarchy.
             \*/
            this.next = null;
        },
        elproto = R.el;

    Element.prototype = elproto;
    elproto.constructor = Element;

    R._engine.path = function (pathString, SVG) {
        var el = $("path");
        SVG.canvas && SVG.canvas.appendChild(el);
        var p = new Element(el, SVG);
        p.type = "path";
        setFillAndStroke(p, {
            fill: "none",
            stroke: "#000",
            path: pathString
        });
        return p;
    };
    /*\
     * Element.rotate
     [ method ]
     **
     * Deprecated! Use @Element.transform instead.
     * Adds rotation by given angle around given point to the list of
     * transformations of the element.
     > Parameters
     - deg (number) angle in degrees
     - cx (number) #optional x coordinate of the centre of rotation
     - cy (number) #optional y coordinate of the centre of rotation
     * If cx & cy aren’t specified centre of the shape is used as a point of rotation.
     = (object) @Element
     \*/
    elproto.rotate = function (deg, cx, cy) {
        if (this.removed) {
            return this;
        }
        deg = Str(deg).split(separator);
        if (deg.length - 1) {
            cx = toFloat(deg[1]);
            cy = toFloat(deg[2]);
        }
        deg = toFloat(deg[0]);
        (cy == null) && (cx = cy);
        if (cx == null || cy == null) {
            var bbox = this.getBBox(1);
            cx = bbox.x + bbox.width / 2;
            cy = bbox.y + bbox.height / 2;
        }
        this.transform(this._.transform.concat([["r", deg, cx, cy]]));
        return this;
    };
    /*\
     * Element.scale
     [ method ]
     **
     * Deprecated! Use @Element.transform instead.
     * Adds scale by given amount relative to given point to the list of
     * transformations of the element.
     > Parameters
     - sx (number) horisontal scale amount
     - sy (number) vertical scale amount
     - cx (number) #optional x coordinate of the centre of scale
     - cy (number) #optional y coordinate of the centre of scale
     * If cx & cy aren’t specified centre of the shape is used instead.
     = (object) @Element
     \*/
    elproto.scale = function (sx, sy, cx, cy) {
        if (this.removed) {
            return this;
        }
        sx = Str(sx).split(separator);
        if (sx.length - 1) {
            sy = toFloat(sx[1]);
            cx = toFloat(sx[2]);
            cy = toFloat(sx[3]);
        }
        sx = toFloat(sx[0]);
        (sy == null) && (sy = sx);
        (cy == null) && (cx = cy);
        if (cx == null || cy == null) {
            var bbox = this.getBBox(1);
        }
        cx = cx == null ? bbox.x + bbox.width / 2 : cx;
        cy = cy == null ? bbox.y + bbox.height / 2 : cy;
        this.transform(this._.transform.concat([["s", sx, sy, cx, cy]]));
        return this;
    };
    /*\
     * Element.translate
     [ method ]
     **
     * Deprecated! Use @Element.transform instead.
     * Adds translation by given amount to the list of transformations of the element.
     > Parameters
     - dx (number) horisontal shift
     - dy (number) vertical shift
     = (object) @Element
     \*/
    elproto.translate = function (dx, dy) {
        if (this.removed) {
            return this;
        }
        dx = Str(dx).split(separator);
        if (dx.length - 1) {
            dy = toFloat(dx[1]);
        }
        dx = toFloat(dx[0]) || 0;
        dy = +dy || 0;
        this.transform(this._.transform.concat([["t", dx, dy]]));
        return this;
    };
    /*\
     * Element.transform
     [ method ]
     **
     * Adds transformation to the element which is separate to other attributes,
     * i.e. translation doesn’t change `x` or `y` of the rectange. The format
     * of transformation string is similar to the path string syntax:
     | "t100,100r30,100,100s2,2,100,100r45s1.5"
     * Each letter is a command. There are four commands: `t` is for translate, `r` is for rotate, `s` is for
     * scale and `m` is for matrix.
     *
     * There are also alternative “absolute” translation, rotation and scale: `T`, `R` and `S`. They will not take previous transformation into account. For example, `...T100,0` will always move element 100 px horisontally, while `...t100,0` could move it vertically if there is `r90` before. Just compare results of `r90t100,0` and `r90T100,0`.
     *
     * So, the example line above could be read like “translate by 100, 100; rotate 30° around 100, 100; scale twice around 100, 100;
     * rotate 45° around centre; scale 1.5 times relative to centre”. As you can see rotate and scale commands have origin
     * coordinates as optional parameters, the default is the centre point of the element.
     * Matrix accepts six parameters.
     > Usage
     | var el = paper.rect(10, 20, 300, 200);
     | // translate 100, 100, rotate 45°, translate -100, 0
     | el.transform("t100,100r45t-100,0");
     | // if you want you can append or prepend transformations
     | el.transform("...t50,50");
     | el.transform("s2...");
     | // or even wrap
     | el.transform("t50,50...t-50-50");
     | // to reset transformation call method with empty string
     | el.transform("");
     | // to get current value call it without parameters
     | console.log(el.transform());
     > Parameters
     - tstr (string) #optional transformation string
     * If tstr isn’t specified
     = (string) current transformation string
     * else
     = (object) @Element
     \*/
    elproto.transform = function (tstr) {
        var _ = this._;
        if (tstr == null) {
            return _.transform;
        }
        R._extractTransform(this, tstr);

        this.clip && $(this.clip, {transform: this.matrix.invert()});
        this.pattern && updatePosition(this);
        this.node && $(this.node, {transform: this.matrix});

        if (_.sx != 1 || _.sy != 1) {
            var sw = this.attrs[has]("stroke-width") ? this.attrs["stroke-width"] : 1;
            this.attr({"stroke-width": sw});
        }

        return this;
    };
    /*\
     * Element.hide
     [ method ]
     **
     * Makes element invisible. See @Element.show.
     = (object) @Element
     \*/
    elproto.hide = function () {
        if(!this.removed) this.node.style.display = "none";
        return this;
    };
    /*\
     * Element.show
     [ method ]
     **
     * Makes element visible. See @Element.hide.
     = (object) @Element
     \*/
    elproto.show = function () {
        if(!this.removed) this.node.style.display = "";
        return this;
    };
    /*\
     * Element.remove
     [ method ]
     **
     * Removes element from the paper.
     \*/
    elproto.remove = function () {
        var node = getRealNode(this.node);
        if (this.removed || !node.parentNode) {
            return;
        }
        var paper = this.paper;
        paper.__set__ && paper.__set__.exclude(this);
        eve.unbind("raphael.*.*." + this.id);
        if (this.gradient) {
            paper.defs.removeChild(this.gradient);
        }
        R._tear(this, paper);

        node.parentNode.removeChild(node);

        // Remove custom data for element
        this.removeData();

        for (var i in this) {
            this[i] = typeof this[i] == "function" ? R._removedFactory(i) : null;
        }
        this.removed = true;
    };
    elproto._getBBox = function () {
        if (this.node.style.display == "none") {
            this.show();
            var hide = true;
        }
        var canvasHidden = false,
            containerStyle;
        if (this.paper.canvas.parentElement) {
            containerStyle = this.paper.canvas.parentElement.style;
        } //IE10+ can't find parentElement
        else if (this.paper.canvas.parentNode) {
            containerStyle = this.paper.canvas.parentNode.style;
        }

        if(containerStyle && containerStyle.display == "none") {
            canvasHidden = true;
            containerStyle.display = "";
        }
        var bbox = {};
        try {
            bbox = this.node.getBBox();
        } catch(e) {
            // Firefox 3.0.x, 25.0.1 (probably more versions affected) play badly here - possible fix
            bbox = {
                x: this.node.clientLeft,
                y: this.node.clientTop,
                width: this.node.clientWidth,
                height: this.node.clientHeight
            }
        } finally {
            bbox = bbox || {};
            if(canvasHidden){
                containerStyle.display = "none";
            }
        }
        hide && this.hide();
        return bbox;
    };
    /*\
     * Element.attr
     [ method ]
     **
     * Sets the attributes of the element.
     > Parameters
     - attrName (string) attribute’s name
     - value (string) value
     * or
     - params (object) object of name/value pairs
     * or
     - attrName (string) attribute’s name
     * or
     - attrNames (array) in this case method returns array of current values for given attribute names
     = (object) @Element if attrsName & value or params are passed in.
     = (...) value of the attribute if only attrsName is passed in.
     = (array) array of values of the attribute if attrsNames is passed in.
     = (object) object of attributes if nothing is passed in.
     > Possible parameters
     # <p>Please refer to the <a href="http://www.w3.org/TR/SVG/" title="The W3C Recommendation for the SVG language describes these properties in detail.">SVG specification</a> for an explanation of these parameters.</p>
     o arrow-end (string) arrowhead on the end of the path. The format for string is `<type>[-<width>[-<length>]]`. Possible types: `classic`, `block`, `open`, `oval`, `diamond`, `none`, width: `wide`, `narrow`, `medium`, length: `long`, `short`, `midium`.
     o clip-rect (string) comma or space separated values: x, y, width and height
     o cursor (string) CSS type of the cursor
     o cx (number) the x-axis coordinate of the center of the circle, or ellipse
     o cy (number) the y-axis coordinate of the center of the circle, or ellipse
     o fill (string) colour, gradient or image
     o fill-opacity (number)
     o font (string)
     o font-family (string)
     o font-size (number) font size in pixels
     o font-weight (string)
     o height (number)
     o href (string) URL, if specified element behaves as hyperlink
     o opacity (number)
     o path (string) SVG path string format
     o r (number) radius of the circle, ellipse or rounded corner on the rect
     o rx (number) horisontal radius of the ellipse
     o ry (number) vertical radius of the ellipse
     o src (string) image URL, only works for @Element.image element
     o stroke (string) stroke colour
     o stroke-dasharray (string) [“”, “none”, “`-`”, “`.`”, “`-.`”, “`-..`”, “`. `”, “`- `”, “`--`”, “`- .`”, “`--.`”, “`--..`”]
     o stroke-linecap (string) [“`butt`”, “`square`”, “`round`”]
     o stroke-linejoin (string) [“`bevel`”, “`round`”, “`miter`”]
     o stroke-miterlimit (number)
     o stroke-opacity (number)
     o stroke-width (number) stroke width in pixels, default is '1'
     o target (string) used with href
     o text (string) contents of the text element. Use `\n` for multiline text
     o text-anchor (string) [“`start`”, “`middle`”, “`end`”], default is “`middle`”
     o title (string) will create tooltip with a given text
     o transform (string) see @Element.transform
     o width (number)
     o x (number)
     o y (number)
     > Gradients
     * Linear gradient format: “`‹angle›-‹colour›[-‹colour›[:‹offset›]]*-‹colour›`”, example: “`90-#fff-#000`” – 90°
     * gradient from white to black or “`0-#fff-#f00:20-#000`” – 0° gradient from white via red (at 20%) to black.
     *
     * radial gradient: “`r[(‹fx›, ‹fy›)]‹colour›[-‹colour›[:‹offset›]]*-‹colour›`”, example: “`r#fff-#000`” –
     * gradient from white to black or “`r(0.25, 0.75)#fff-#000`” – gradient from white to black with focus point
     * at 0.25, 0.75. Focus point coordinates are in 0..1 range. Radial gradients can only be applied to circles and ellipses.
     > Path String
     # <p>Please refer to <a href="http://www.w3.org/TR/SVG/paths.html#PathData" title="Details of a path’s data attribute’s format are described in the SVG specification.">SVG documentation regarding path string</a>. Raphaël fully supports it.</p>
     > Colour Parsing
     # <ul>
     #     <li>Colour name (“<code>red</code>”, “<code>green</code>”, “<code>cornflowerblue</code>”, etc)</li>
     #     <li>#••• — shortened HTML colour: (“<code>#000</code>”, “<code>#fc0</code>”, etc)</li>
     #     <li>#•••••• — full length HTML colour: (“<code>#000000</code>”, “<code>#bd2300</code>”)</li>
     #     <li>rgb(•••, •••, •••) — red, green and blue channels’ values: (“<code>rgb(200,&nbsp;100,&nbsp;0)</code>”)</li>
     #     <li>rgb(•••%, •••%, •••%) — same as above, but in %: (“<code>rgb(100%,&nbsp;175%,&nbsp;0%)</code>”)</li>
     #     <li>rgba(•••, •••, •••, •••) — red, green and blue channels’ values: (“<code>rgba(200,&nbsp;100,&nbsp;0, .5)</code>”)</li>
     #     <li>rgba(•••%, •••%, •••%, •••%) — same as above, but in %: (“<code>rgba(100%,&nbsp;175%,&nbsp;0%, 50%)</code>”)</li>
     #     <li>hsb(•••, •••, •••) — hue, saturation and brightness values: (“<code>hsb(0.5,&nbsp;0.25,&nbsp;1)</code>”)</li>
     #     <li>hsb(•••%, •••%, •••%) — same as above, but in %</li>
     #     <li>hsba(•••, •••, •••, •••) — same as above, but with opacity</li>
     #     <li>hsl(•••, •••, •••) — almost the same as hsb, see <a href="http://en.wikipedia.org/wiki/HSL_and_HSV" title="HSL and HSV - Wikipedia, the free encyclopedia">Wikipedia page</a></li>
     #     <li>hsl(•••%, •••%, •••%) — same as above, but in %</li>
     #     <li>hsla(•••, •••, •••, •••) — same as above, but with opacity</li>
     #     <li>Optionally for hsb and hsl you could specify hue as a degree: “<code>hsl(240deg,&nbsp;1,&nbsp;.5)</code>” or, if you want to go fancy, “<code>hsl(240°,&nbsp;1,&nbsp;.5)</code>”</li>
     # </ul>
     \*/
    elproto.attr = function (name, value) {
        if (this.removed) {
            return this;
        }
        if (name == null) {
            var res = {};
            for (var a in this.attrs) if (this.attrs[has](a)) {
                res[a] = this.attrs[a];
            }
            res.gradient && res.fill == "none" && (res.fill = res.gradient) && delete res.gradient;
            res.transform = this._.transform;
            return res;
        }
        if (value == null && R.is(name, "string")) {
            if (name == "fill" && this.attrs.fill == "none" && this.attrs.gradient) {
                return this.attrs.gradient;
            }
            if (name == "transform") {
                return this._.transform;
            }
            var names = name.split(separator),
                out = {};
            for (var i = 0, ii = names.length; i < ii; i++) {
                name = names[i];
                if (name in this.attrs) {
                    out[name] = this.attrs[name];
                } else if (R.is(this.paper.customAttributes[name], "function")) {
                    out[name] = this.paper.customAttributes[name].def;
                } else {
                    out[name] = R._availableAttrs[name];
                }
            }
            return ii - 1 ? out : out[names[0]];
        }
        if (value == null && R.is(name, "array")) {
            out = {};
            for (i = 0, ii = name.length; i < ii; i++) {
                out[name[i]] = this.attr(name[i]);
            }
            return out;
        }
        if (value != null) {
            var params = {};
            params[name] = value;
        } else if (name != null && R.is(name, "object")) {
            params = name;
        }
        for (var key in params) {
            eve("raphael.attr." + key + "." + this.id, this, params[key]);
        }
        for (key in this.paper.customAttributes) if (this.paper.customAttributes[has](key) && params[has](key) && R.is(this.paper.customAttributes[key], "function")) {
            var par = this.paper.customAttributes[key].apply(this, [].concat(params[key]));
            this.attrs[key] = params[key];
            for (var subkey in par) if (par[has](subkey)) {
                params[subkey] = par[subkey];
            }
        }
        setFillAndStroke(this, params);
        return this;
    };
    /*\
     * Element.toFront
     [ method ]
     **
     * Moves the element so it is the closest to the viewer’s eyes, on top of other elements.
     = (object) @Element
     \*/
    elproto.toFront = function () {
        if (this.removed) {
            return this;
        }
        var node = getRealNode(this.node);
        node.parentNode.appendChild(node);
        var svg = this.paper;
        svg.top != this && R._tofront(this, svg);
        return this;
    };
    /*\
     * Element.toBack
     [ method ]
     **
     * Moves the element so it is the furthest from the viewer’s eyes, behind other elements.
     = (object) @Element
     \*/
    elproto.toBack = function () {
        if (this.removed) {
            return this;
        }
        var node = getRealNode(this.node);
        var parentNode = node.parentNode;
        parentNode.insertBefore(node, parentNode.firstChild);
        R._toback(this, this.paper);
        var svg = this.paper;
        return this;
    };
    /*\
     * Element.insertAfter
     [ method ]
     **
     * Inserts current object after the given one.
     = (object) @Element
     \*/
    elproto.insertAfter = function (element) {
        if (this.removed || !element) {
            return this;
        }

        var node = getRealNode(this.node);
        var afterNode = getRealNode(element.node || element[element.length - 1].node);
        if (afterNode.nextSibling) {
            afterNode.parentNode.insertBefore(node, afterNode.nextSibling);
        } else {
            afterNode.parentNode.appendChild(node);
        }
        R._insertafter(this, element, this.paper);
        return this;
    };
    /*\
     * Element.insertBefore
     [ method ]
     **
     * Inserts current object before the given one.
     = (object) @Element
     \*/
    elproto.insertBefore = function (element) {
        if (this.removed || !element) {
            return this;
        }

        var node = getRealNode(this.node);
        var beforeNode = getRealNode(element.node || element[0].node);
        beforeNode.parentNode.insertBefore(node, beforeNode);
        R._insertbefore(this, element, this.paper);
        return this;
    };
    elproto.blur = function (size) {
        // Experimental. No Safari support. Use it on your own risk.
        var t = this;
        if (+size !== 0) {
            var fltr = $("filter"),
                blur = $("feGaussianBlur");
            t.attrs.blur = size;
            fltr.id = R.createUUID();
            $(blur, {stdDeviation: +size || 1.5});
            fltr.appendChild(blur);
            t.paper.defs.appendChild(fltr);
            t._blur = fltr;
            $(t.node, {filter: "url(#" + fltr.id + ")"});
        } else {
            if (t._blur) {
                t._blur.parentNode.removeChild(t._blur);
                delete t._blur;
                delete t.attrs.blur;
            }
            t.node.removeAttribute("filter");
        }
        return t;
    };
    R._engine.circle = function (svg, x, y, r) {
        var el = $("circle");
        svg.canvas && svg.canvas.appendChild(el);
        var res = new Element(el, svg);
        res.attrs = {cx: x, cy: y, r: r, fill: "none", stroke: "#000"};
        res.type = "circle";
        $(el, res.attrs);
        return res;
    };
    R._engine.rect = function (svg, x, y, w, h, r) {
        var el = $("rect");
        svg.canvas && svg.canvas.appendChild(el);
        var res = new Element(el, svg);
        res.attrs = {x: x, y: y, width: w, height: h, rx: r || 0, ry: r || 0, fill: "none", stroke: "#000"};
        res.type = "rect";
        $(el, res.attrs);
        return res;
    };
    R._engine.ellipse = function (svg, x, y, rx, ry) {
        var el = $("ellipse");
        svg.canvas && svg.canvas.appendChild(el);
        var res = new Element(el, svg);
        res.attrs = {cx: x, cy: y, rx: rx, ry: ry, fill: "none", stroke: "#000"};
        res.type = "ellipse";
        $(el, res.attrs);
        return res;
    };
    R._engine.image = function (svg, src, x, y, w, h) {
        var el = $("image");
        $(el, {x: x, y: y, width: w, height: h, preserveAspectRatio: "none"});
        el.setAttributeNS(xlink, "href", src);
        svg.canvas && svg.canvas.appendChild(el);
        var res = new Element(el, svg);
        res.attrs = {x: x, y: y, width: w, height: h, src: src};
        res.type = "image";
        return res;
    };
    R._engine.text = function (svg, x, y, text) {
        var el = $("text");
        svg.canvas && svg.canvas.appendChild(el);
        var res = new Element(el, svg);
        res.attrs = {
            x: x,
            y: y,
            "text-anchor": "middle",
            text: text,
            "font-family": R._availableAttrs["font-family"],
            "font-size": R._availableAttrs["font-size"],
            stroke: "none",
            fill: "#000"
        };
        res.type = "text";
        setFillAndStroke(res, res.attrs);
        return res;
    };
    R._engine.setSize = function (width, height) {
        this.width = width || this.width;
        this.height = height || this.height;
        this.canvas.setAttribute("width", this.width);
        this.canvas.setAttribute("height", this.height);
        if (this._viewBox) {
            this.setViewBox.apply(this, this._viewBox);
        }
        return this;
    };
    R._engine.create = function () {
        var con = R._getContainer.apply(0, arguments),
            container = con && con.container,
            x = con.x,
            y = con.y,
            width = con.width,
            height = con.height;
        if (!container) {
            throw new Error("SVG container not found.");
        }
        var cnvs = $("svg"),
            css = "overflow:hidden;",
            isFloating;
        x = x || 0;
        y = y || 0;
        width = width || 512;
        height = height || 342;
        $(cnvs, {
            height: height,
            version: 1.1,
            width: width,
            xmlns: "http://www.w3.org/2000/svg",
            "xmlns:xlink": "http://www.w3.org/1999/xlink"
        });
        if (container == 1) {
            cnvs.style.cssText = css + "position:absolute;left:" + x + "px;top:" + y + "px";
            R._g.doc.body.appendChild(cnvs);
            isFloating = 1;
        } else {
            cnvs.style.cssText = css + "position:relative";
            if (container.firstChild) {
                container.insertBefore(cnvs, container.firstChild);
            } else {
                container.appendChild(cnvs);
            }
        }
        container = new R._Paper;
        container.width = width;
        container.height = height;
        container.canvas = cnvs;
        container.clear();
        container._left = container._top = 0;
        isFloating && (container.renderfix = function () {});
        container.renderfix();
        return container;
    };
    R._engine.setViewBox = function (x, y, w, h, fit) {
        eve("raphael.setViewBox", this, this._viewBox, [x, y, w, h, fit]);
        var paperSize = this.getSize(),
            size = mmax(w / paperSize.width, h / paperSize.height),
            top = this.top,
            aspectRatio = fit ? "xMidYMid meet" : "xMinYMin",
            vb,
            sw;
        if (x == null) {
            if (this._vbSize) {
                size = 1;
            }
            delete this._vbSize;
            vb = "0 0 " + this.width + S + this.height;
        } else {
            this._vbSize = size;
            vb = x + S + y + S + w + S + h;
        }
        $(this.canvas, {
            viewBox: vb,
            preserveAspectRatio: aspectRatio
        });
        while (size && top) {
            sw = "stroke-width" in top.attrs ? top.attrs["stroke-width"] : 1;
            top.attr({"stroke-width": sw});
            top._.dirty = 1;
            top._.dirtyT = 1;
            top = top.prev;
        }
        this._viewBox = [x, y, w, h, !!fit];
        return this;
    };
    /*\
     * Paper.renderfix
     [ method ]
     **
     * Fixes the issue of Firefox and IE9 regarding subpixel rendering. If paper is dependant
     * on other elements after reflow it could shift half pixel which cause for lines to lost their crispness.
     * This method fixes the issue.
     **
     Special thanks to Mariusz Nowak (http://www.medikoo.com/) for this method.
     \*/
    R.prototype.renderfix = function () {
        var cnvs = this.canvas,
            s = cnvs.style,
            pos;
        try {
            pos = cnvs.getScreenCTM() || cnvs.createSVGMatrix();
        } catch (e) {
            pos = cnvs.createSVGMatrix();
        }
        var left = -pos.e % 1,
            top = -pos.f % 1;
        if (left || top) {
            if (left) {
                this._left = (this._left + left) % 1;
                s.left = this._left + "px";
            }
            if (top) {
                this._top = (this._top + top) % 1;
                s.top = this._top + "px";
            }
        }
    };
    /*\
     * Paper.clear
     [ method ]
     **
     * Clears the paper, i.e. removes all the elements.
     \*/
    R.prototype.clear = function () {
        R.eve("raphael.clear", this);
        var c = this.canvas;
        while (c.firstChild) {
            c.removeChild(c.firstChild);
        }
        this.bottom = this.top = null;
        (this.desc = $("desc")).appendChild(R._g.doc.createTextNode("Created with Rapha\xebl " + R.version));
        c.appendChild(this.desc);
        c.appendChild(this.defs = $("defs"));
    };
    /*\
     * Paper.remove
     [ method ]
     **
     * Removes the paper from the DOM.
     \*/
    R.prototype.remove = function () {
        eve("raphael.remove", this);
        this.canvas.parentNode && this.canvas.parentNode.removeChild(this.canvas);
        for (var i in this) {
            this[i] = typeof this[i] == "function" ? R._removedFactory(i) : null;
        }
    };
    var setproto = R.st;
    for (var method in elproto) if (elproto[has](method) && !setproto[has](method)) {
        setproto[method] = (function (methodname) {
            return function () {
                var arg = arguments;
                return this.forEach(function (el) {
                    el[methodname].apply(el, arg);
                });
            };
        })(method);
    }
}));

// ┌─────────────────────────────────────────────────────────────────────┐ \\
// │ Raphaël 2.1.4 - JavaScript Vector Library                       │ \\
// ├─────────────────────────────────────────────────────────────────────┤ \\
// │ VML Module                                                          │ \\
// ├─────────────────────────────────────────────────────────────────────┤ \\
// │ Copyright (c) 2008-2011 Dmitry Baranovskiy (http://raphaeljs.com)   │ \\
// │ Copyright (c) 2008-2011 Sencha Labs (http://sencha.com)             │ \\
// │ Licensed under the MIT (http://raphaeljs.com/license.html) license. │ \\
// └─────────────────────────────────────────────────────────────────────┘ \\

(function (glob, factory) {
    if (typeof define === "function" && define.amd) {
        define("raphael.vml", ["raphael.core"], function(raphael) {
            return factory(raphael);
        });
    } else if (typeof exports === "object") {
        factory(require("raphael"));
    } else {
        factory(glob.Raphael);
    }
}(this, function(R) {
    if (R && !R.vml) {
        return;
    }

    var has = "hasOwnProperty",
        Str = String,
        toFloat = parseFloat,
        math = Math,
        round = math.round,
        mmax = math.max,
        mmin = math.min,
        abs = math.abs,
        fillString = "fill",
        separator = /[, ]+/,
        eve = R.eve,
        ms = " progid:DXImageTransform.Microsoft",
        S = " ",
        E = "",
        map = {M: "m", L: "l", C: "c", Z: "x", m: "t", l: "r", c: "v", z: "x"},
        bites = /([clmz]),?([^clmz]*)/gi,
        blurregexp = / progid:\S+Blur\([^\)]+\)/g,
        val = /-?[^,\s-]+/g,
        cssDot = "position:absolute;left:0;top:0;width:1px;height:1px;behavior:url(#default#VML)",
        zoom = 21600,
        pathTypes = {path: 1, rect: 1, image: 1},
        ovalTypes = {circle: 1, ellipse: 1},
        path2vml = function (path) {
            var total =  /[ahqstv]/ig,
                command = R._pathToAbsolute;
            Str(path).match(total) && (command = R._path2curve);
            total = /[clmz]/g;
            if (command == R._pathToAbsolute && !Str(path).match(total)) {
                var res = Str(path).replace(bites, function (all, command, args) {
                    var vals = [],
                        isMove = command.toLowerCase() == "m",
                        res = map[command];
                    args.replace(val, function (value) {
                        if (isMove && vals.length == 2) {
                            res += vals + map[command == "m" ? "l" : "L"];
                            vals = [];
                        }
                        vals.push(round(value * zoom));
                    });
                    return res + vals;
                });
                return res;
            }
            var pa = command(path), p, r;
            res = [];
            for (var i = 0, ii = pa.length; i < ii; i++) {
                p = pa[i];
                r = pa[i][0].toLowerCase();
                r == "z" && (r = "x");
                for (var j = 1, jj = p.length; j < jj; j++) {
                    r += round(p[j] * zoom) + (j != jj - 1 ? "," : E);
                }
                res.push(r);
            }
            return res.join(S);
        },
        compensation = function (deg, dx, dy) {
            var m = R.matrix();
            m.rotate(-deg, .5, .5);
            return {
                dx: m.x(dx, dy),
                dy: m.y(dx, dy)
            };
        },
        setCoords = function (p, sx, sy, dx, dy, deg) {
            var _ = p._,
                m = p.matrix,
                fillpos = _.fillpos,
                o = p.node,
                s = o.style,
                y = 1,
                flip = "",
                dxdy,
                kx = zoom / sx,
                ky = zoom / sy;
            s.visibility = "hidden";
            if (!sx || !sy) {
                return;
            }
            o.coordsize = abs(kx) + S + abs(ky);
            s.rotation = deg * (sx * sy < 0 ? -1 : 1);
            if (deg) {
                var c = compensation(deg, dx, dy);
                dx = c.dx;
                dy = c.dy;
            }
            sx < 0 && (flip += "x");
            sy < 0 && (flip += " y") && (y = -1);
            s.flip = flip;
            o.coordorigin = (dx * -kx) + S + (dy * -ky);
            if (fillpos || _.fillsize) {
                var fill = o.getElementsByTagName(fillString);
                fill = fill && fill[0];
                o.removeChild(fill);
                if (fillpos) {
                    c = compensation(deg, m.x(fillpos[0], fillpos[1]), m.y(fillpos[0], fillpos[1]));
                    fill.position = c.dx * y + S + c.dy * y;
                }
                if (_.fillsize) {
                    fill.size = _.fillsize[0] * abs(sx) + S + _.fillsize[1] * abs(sy);
                }
                o.appendChild(fill);
            }
            s.visibility = "visible";
        };
    R.toString = function () {
        return  "Your browser doesn\u2019t support SVG. Falling down to VML.\nYou are running Rapha\xebl " + this.version;
    };
    var addArrow = function (o, value, isEnd) {
            var values = Str(value).toLowerCase().split("-"),
                se = isEnd ? "end" : "start",
                i = values.length,
                type = "classic",
                w = "medium",
                h = "medium";
            while (i--) {
                switch (values[i]) {
                    case "block":
                    case "classic":
                    case "oval":
                    case "diamond":
                    case "open":
                    case "none":
                        type = values[i];
                        break;
                    case "wide":
                    case "narrow": h = values[i]; break;
                    case "long":
                    case "short": w = values[i]; break;
                }
            }
            var stroke = o.node.getElementsByTagName("stroke")[0];
            stroke[se + "arrow"] = type;
            stroke[se + "arrowlength"] = w;
            stroke[se + "arrowwidth"] = h;
        },
        setFillAndStroke = function (o, params) {
            // o.paper.canvas.style.display = "none";
            o.attrs = o.attrs || {};
            var node = o.node,
                a = o.attrs,
                s = node.style,
                xy,
                newpath = pathTypes[o.type] && (params.x != a.x || params.y != a.y || params.width != a.width || params.height != a.height || params.cx != a.cx || params.cy != a.cy || params.rx != a.rx || params.ry != a.ry || params.r != a.r),
                isOval = ovalTypes[o.type] && (a.cx != params.cx || a.cy != params.cy || a.r != params.r || a.rx != params.rx || a.ry != params.ry),
                res = o;


            for (var par in params) if (params[has](par)) {
                a[par] = params[par];
            }
            if (newpath) {
                a.path = R._getPath[o.type](o);
                o._.dirty = 1;
            }
            params.href && (node.href = params.href);
            params.title && (node.title = params.title);
            params.target && (node.target = params.target);
            params.cursor && (s.cursor = params.cursor);
            "blur" in params && o.blur(params.blur);
            if (params.path && o.type == "path" || newpath) {
                node.path = path2vml(~Str(a.path).toLowerCase().indexOf("r") ? R._pathToAbsolute(a.path) : a.path);
                o._.dirty = 1;
                if (o.type == "image") {
                    o._.fillpos = [a.x, a.y];
                    o._.fillsize = [a.width, a.height];
                    setCoords(o, 1, 1, 0, 0, 0);
                }
            }
            "transform" in params && o.transform(params.transform);
            if (isOval) {
                var cx = +a.cx,
                    cy = +a.cy,
                    rx = +a.rx || +a.r || 0,
                    ry = +a.ry || +a.r || 0;
                node.path = R.format("ar{0},{1},{2},{3},{4},{1},{4},{1}x", round((cx - rx) * zoom), round((cy - ry) * zoom), round((cx + rx) * zoom), round((cy + ry) * zoom), round(cx * zoom));
                o._.dirty = 1;
            }
            if ("clip-rect" in params) {
                var rect = Str(params["clip-rect"]).split(separator);
                if (rect.length == 4) {
                    rect[2] = +rect[2] + (+rect[0]);
                    rect[3] = +rect[3] + (+rect[1]);
                    var div = node.clipRect || R._g.doc.createElement("div"),
                        dstyle = div.style;
                    dstyle.clip = R.format("rect({1}px {2}px {3}px {0}px)", rect);
                    if (!node.clipRect) {
                        dstyle.position = "absolute";
                        dstyle.top = 0;
                        dstyle.left = 0;
                        dstyle.width = o.paper.width + "px";
                        dstyle.height = o.paper.height + "px";
                        node.parentNode.insertBefore(div, node);
                        div.appendChild(node);
                        node.clipRect = div;
                    }
                }
                if (!params["clip-rect"]) {
                    node.clipRect && (node.clipRect.style.clip = "auto");
                }
            }
            if (o.textpath) {
                var textpathStyle = o.textpath.style;
                params.font && (textpathStyle.font = params.font);
                params["font-family"] && (textpathStyle.fontFamily = '"' + params["font-family"].split(",")[0].replace(/^['"]+|['"]+$/g, E) + '"');
                params["font-size"] && (textpathStyle.fontSize = params["font-size"]);
                params["font-weight"] && (textpathStyle.fontWeight = params["font-weight"]);
                params["font-style"] && (textpathStyle.fontStyle = params["font-style"]);
            }
            if ("arrow-start" in params) {
                addArrow(res, params["arrow-start"]);
            }
            if ("arrow-end" in params) {
                addArrow(res, params["arrow-end"], 1);
            }
            if (params.opacity != null ||
                params["stroke-width"] != null ||
                params.fill != null ||
                params.src != null ||
                params.stroke != null ||
                params["stroke-width"] != null ||
                params["stroke-opacity"] != null ||
                params["fill-opacity"] != null ||
                params["stroke-dasharray"] != null ||
                params["stroke-miterlimit"] != null ||
                params["stroke-linejoin"] != null ||
                params["stroke-linecap"] != null) {
                var fill = node.getElementsByTagName(fillString),
                    newfill = false;
                fill = fill && fill[0];
                !fill && (newfill = fill = createNode(fillString));
                if (o.type == "image" && params.src) {
                    fill.src = params.src;
                }
                params.fill && (fill.on = true);
                if (fill.on == null || params.fill == "none" || params.fill === null) {
                    fill.on = false;
                }
                if (fill.on && params.fill) {
                    var isURL = Str(params.fill).match(R._ISURL);
                    if (isURL) {
                        fill.parentNode == node && node.removeChild(fill);
                        fill.rotate = true;
                        fill.src = isURL[1];
                        fill.type = "tile";
                        var bbox = o.getBBox(1);
                        fill.position = bbox.x + S + bbox.y;
                        o._.fillpos = [bbox.x, bbox.y];

                        R._preload(isURL[1], function () {
                            o._.fillsize = [this.offsetWidth, this.offsetHeight];
                        });
                    } else {
                        fill.color = R.getRGB(params.fill).hex;
                        fill.src = E;
                        fill.type = "solid";
                        if (R.getRGB(params.fill).error && (res.type in {circle: 1, ellipse: 1} || Str(params.fill).charAt() != "r") && addGradientFill(res, params.fill, fill)) {
                            a.fill = "none";
                            a.gradient = params.fill;
                            fill.rotate = false;
                        }
                    }
                }
                if ("fill-opacity" in params || "opacity" in params) {
                    var opacity = ((+a["fill-opacity"] + 1 || 2) - 1) * ((+a.opacity + 1 || 2) - 1) * ((+R.getRGB(params.fill).o + 1 || 2) - 1);
                    opacity = mmin(mmax(opacity, 0), 1);
                    fill.opacity = opacity;
                    if (fill.src) {
                        fill.color = "none";
                    }
                }
                node.appendChild(fill);
                var stroke = (node.getElementsByTagName("stroke") && node.getElementsByTagName("stroke")[0]),
                    newstroke = false;
                !stroke && (newstroke = stroke = createNode("stroke"));
                if ((params.stroke && params.stroke != "none") ||
                    params["stroke-width"] ||
                    params["stroke-opacity"] != null ||
                    params["stroke-dasharray"] ||
                    params["stroke-miterlimit"] ||
                    params["stroke-linejoin"] ||
                    params["stroke-linecap"]) {
                    stroke.on = true;
                }
                (params.stroke == "none" || params.stroke === null || stroke.on == null || params.stroke == 0 || params["stroke-width"] == 0) && (stroke.on = false);
                var strokeColor = R.getRGB(params.stroke);
                stroke.on && params.stroke && (stroke.color = strokeColor.hex);
                opacity = ((+a["stroke-opacity"] + 1 || 2) - 1) * ((+a.opacity + 1 || 2) - 1) * ((+strokeColor.o + 1 || 2) - 1);
                var width = (toFloat(params["stroke-width"]) || 1) * .75;
                opacity = mmin(mmax(opacity, 0), 1);
                params["stroke-width"] == null && (width = a["stroke-width"]);
                params["stroke-width"] && (stroke.weight = width);
                width && width < 1 && (opacity *= width) && (stroke.weight = 1);
                stroke.opacity = opacity;

                params["stroke-linejoin"] && (stroke.joinstyle = params["stroke-linejoin"] || "miter");
                stroke.miterlimit = params["stroke-miterlimit"] || 8;
                params["stroke-linecap"] && (stroke.endcap = params["stroke-linecap"] == "butt" ? "flat" : params["stroke-linecap"] == "square" ? "square" : "round");
                if ("stroke-dasharray" in params) {
                    var dasharray = {
                        "-": "shortdash",
                        ".": "shortdot",
                        "-.": "shortdashdot",
                        "-..": "shortdashdotdot",
                        ". ": "dot",
                        "- ": "dash",
                        "--": "longdash",
                        "- .": "dashdot",
                        "--.": "longdashdot",
                        "--..": "longdashdotdot"
                    };
                    stroke.dashstyle = dasharray[has](params["stroke-dasharray"]) ? dasharray[params["stroke-dasharray"]] : E;
                }
                newstroke && node.appendChild(stroke);
            }
            if (res.type == "text") {
                res.paper.canvas.style.display = E;
                var span = res.paper.span,
                    m = 100,
                    fontSize = a.font && a.font.match(/\d+(?:\.\d*)?(?=px)/);
                s = span.style;
                a.font && (s.font = a.font);
                a["font-family"] && (s.fontFamily = a["font-family"]);
                a["font-weight"] && (s.fontWeight = a["font-weight"]);
                a["font-style"] && (s.fontStyle = a["font-style"]);
                fontSize = toFloat(a["font-size"] || fontSize && fontSize[0]) || 10;
                s.fontSize = fontSize * m + "px";
                res.textpath.string && (span.innerHTML = Str(res.textpath.string).replace(/</g, "&#60;").replace(/&/g, "&#38;").replace(/\n/g, "<br>"));
                var brect = span.getBoundingClientRect();
                res.W = a.w = (brect.right - brect.left) / m;
                res.H = a.h = (brect.bottom - brect.top) / m;
                // res.paper.canvas.style.display = "none";
                res.X = a.x;
                res.Y = a.y + res.H / 2;

                ("x" in params || "y" in params) && (res.path.v = R.format("m{0},{1}l{2},{1}", round(a.x * zoom), round(a.y * zoom), round(a.x * zoom) + 1));
                var dirtyattrs = ["x", "y", "text", "font", "font-family", "font-weight", "font-style", "font-size"];
                for (var d = 0, dd = dirtyattrs.length; d < dd; d++) if (dirtyattrs[d] in params) {
                    res._.dirty = 1;
                    break;
                }

                // text-anchor emulation
                switch (a["text-anchor"]) {
                    case "start":
                        res.textpath.style["v-text-align"] = "left";
                        res.bbx = res.W / 2;
                        break;
                    case "end":
                        res.textpath.style["v-text-align"] = "right";
                        res.bbx = -res.W / 2;
                        break;
                    default:
                        res.textpath.style["v-text-align"] = "center";
                        res.bbx = 0;
                        break;
                }
                res.textpath.style["v-text-kern"] = true;
            }
            // res.paper.canvas.style.display = E;
        },
        addGradientFill = function (o, gradient, fill) {
            o.attrs = o.attrs || {};
            var attrs = o.attrs,
                pow = Math.pow,
                opacity,
                oindex,
                type = "linear",
                fxfy = ".5 .5";
            o.attrs.gradient = gradient;
            gradient = Str(gradient).replace(R._radial_gradient, function (all, fx, fy) {
                type = "radial";
                if (fx && fy) {
                    fx = toFloat(fx);
                    fy = toFloat(fy);
                    pow(fx - .5, 2) + pow(fy - .5, 2) > .25 && (fy = math.sqrt(.25 - pow(fx - .5, 2)) * ((fy > .5) * 2 - 1) + .5);
                    fxfy = fx + S + fy;
                }
                return E;
            });
            gradient = gradient.split(/\s*\-\s*/);
            if (type == "linear") {
                var angle = gradient.shift();
                angle = -toFloat(angle);
                if (isNaN(angle)) {
                    return null;
                }
            }
            var dots = R._parseDots(gradient);
            if (!dots) {
                return null;
            }
            o = o.shape || o.node;
            if (dots.length) {
                o.removeChild(fill);
                fill.on = true;
                fill.method = "none";
                fill.color = dots[0].color;
                fill.color2 = dots[dots.length - 1].color;
                var clrs = [];
                for (var i = 0, ii = dots.length; i < ii; i++) {
                    dots[i].offset && clrs.push(dots[i].offset + S + dots[i].color);
                }
                fill.colors = clrs.length ? clrs.join() : "0% " + fill.color;
                if (type == "radial") {
                    fill.type = "gradientTitle";
                    fill.focus = "100%";
                    fill.focussize = "0 0";
                    fill.focusposition = fxfy;
                    fill.angle = 0;
                } else {
                    // fill.rotate= true;
                    fill.type = "gradient";
                    fill.angle = (270 - angle) % 360;
                }
                o.appendChild(fill);
            }
            return 1;
        },
        Element = function (node, vml) {
            this[0] = this.node = node;
            node.raphael = true;
            this.id = R._oid++;
            node.raphaelid = this.id;
            this.X = 0;
            this.Y = 0;
            this.attrs = {};
            this.paper = vml;
            this.matrix = R.matrix();
            this._ = {
                transform: [],
                sx: 1,
                sy: 1,
                dx: 0,
                dy: 0,
                deg: 0,
                dirty: 1,
                dirtyT: 1
            };
            !vml.bottom && (vml.bottom = this);
            this.prev = vml.top;
            vml.top && (vml.top.next = this);
            vml.top = this;
            this.next = null;
        };
    var elproto = R.el;

    Element.prototype = elproto;
    elproto.constructor = Element;
    elproto.transform = function (tstr) {
        if (tstr == null) {
            return this._.transform;
        }
        var vbs = this.paper._viewBoxShift,
            vbt = vbs ? "s" + [vbs.scale, vbs.scale] + "-1-1t" + [vbs.dx, vbs.dy] : E,
            oldt;
        if (vbs) {
            oldt = tstr = Str(tstr).replace(/\.{3}|\u2026/g, this._.transform || E);
        }
        R._extractTransform(this, vbt + tstr);
        var matrix = this.matrix.clone(),
            skew = this.skew,
            o = this.node,
            split,
            isGrad = ~Str(this.attrs.fill).indexOf("-"),
            isPatt = !Str(this.attrs.fill).indexOf("url(");
        matrix.translate(1, 1);
        if (isPatt || isGrad || this.type == "image") {
            skew.matrix = "1 0 0 1";
            skew.offset = "0 0";
            split = matrix.split();
            if ((isGrad && split.noRotation) || !split.isSimple) {
                o.style.filter = matrix.toFilter();
                var bb = this.getBBox(),
                    bbt = this.getBBox(1),
                    dx = bb.x - bbt.x,
                    dy = bb.y - bbt.y;
                o.coordorigin = (dx * -zoom) + S + (dy * -zoom);
                setCoords(this, 1, 1, dx, dy, 0);
            } else {
                o.style.filter = E;
                setCoords(this, split.scalex, split.scaley, split.dx, split.dy, split.rotate);
            }
        } else {
            o.style.filter = E;
            skew.matrix = Str(matrix);
            skew.offset = matrix.offset();
        }
        if (oldt !== null) { // empty string value is true as well
            this._.transform = oldt;
            R._extractTransform(this, oldt);
        }
        return this;
    };
    elproto.rotate = function (deg, cx, cy) {
        if (this.removed) {
            return this;
        }
        if (deg == null) {
            return;
        }
        deg = Str(deg).split(separator);
        if (deg.length - 1) {
            cx = toFloat(deg[1]);
            cy = toFloat(deg[2]);
        }
        deg = toFloat(deg[0]);
        (cy == null) && (cx = cy);
        if (cx == null || cy == null) {
            var bbox = this.getBBox(1);
            cx = bbox.x + bbox.width / 2;
            cy = bbox.y + bbox.height / 2;
        }
        this._.dirtyT = 1;
        this.transform(this._.transform.concat([["r", deg, cx, cy]]));
        return this;
    };
    elproto.translate = function (dx, dy) {
        if (this.removed) {
            return this;
        }
        dx = Str(dx).split(separator);
        if (dx.length - 1) {
            dy = toFloat(dx[1]);
        }
        dx = toFloat(dx[0]) || 0;
        dy = +dy || 0;
        if (this._.bbox) {
            this._.bbox.x += dx;
            this._.bbox.y += dy;
        }
        this.transform(this._.transform.concat([["t", dx, dy]]));
        return this;
    };
    elproto.scale = function (sx, sy, cx, cy) {
        if (this.removed) {
            return this;
        }
        sx = Str(sx).split(separator);
        if (sx.length - 1) {
            sy = toFloat(sx[1]);
            cx = toFloat(sx[2]);
            cy = toFloat(sx[3]);
            isNaN(cx) && (cx = null);
            isNaN(cy) && (cy = null);
        }
        sx = toFloat(sx[0]);
        (sy == null) && (sy = sx);
        (cy == null) && (cx = cy);
        if (cx == null || cy == null) {
            var bbox = this.getBBox(1);
        }
        cx = cx == null ? bbox.x + bbox.width / 2 : cx;
        cy = cy == null ? bbox.y + bbox.height / 2 : cy;

        this.transform(this._.transform.concat([["s", sx, sy, cx, cy]]));
        this._.dirtyT = 1;
        return this;
    };
    elproto.hide = function () {
        !this.removed && (this.node.style.display = "none");
        return this;
    };
    elproto.show = function () {
        !this.removed && (this.node.style.display = E);
        return this;
    };
    // Needed to fix the vml setViewBox issues
    elproto.auxGetBBox = R.el.getBBox;
    elproto.getBBox = function(){
        var b = this.auxGetBBox();
        if (this.paper && this.paper._viewBoxShift)
        {
            var c = {};
            var z = 1/this.paper._viewBoxShift.scale;
            c.x = b.x - this.paper._viewBoxShift.dx;
            c.x *= z;
            c.y = b.y - this.paper._viewBoxShift.dy;
            c.y *= z;
            c.width  = b.width  * z;
            c.height = b.height * z;
            c.x2 = c.x + c.width;
            c.y2 = c.y + c.height;
            return c;
        }
        return b;
    };
    elproto._getBBox = function () {
        if (this.removed) {
            return {};
        }
        return {
            x: this.X + (this.bbx || 0) - this.W / 2,
            y: this.Y - this.H,
            width: this.W,
            height: this.H
        };
    };
    elproto.remove = function () {
        if (this.removed || !this.node.parentNode) {
            return;
        }
        this.paper.__set__ && this.paper.__set__.exclude(this);
        R.eve.unbind("raphael.*.*." + this.id);
        R._tear(this, this.paper);
        this.node.parentNode.removeChild(this.node);
        this.shape && this.shape.parentNode.removeChild(this.shape);
        for (var i in this) {
            this[i] = typeof this[i] == "function" ? R._removedFactory(i) : null;
        }
        this.removed = true;
    };
    elproto.attr = function (name, value) {
        if (this.removed) {
            return this;
        }
        if (name == null) {
            var res = {};
            for (var a in this.attrs) if (this.attrs[has](a)) {
                res[a] = this.attrs[a];
            }
            res.gradient && res.fill == "none" && (res.fill = res.gradient) && delete res.gradient;
            res.transform = this._.transform;
            return res;
        }
        if (value == null && R.is(name, "string")) {
            if (name == fillString && this.attrs.fill == "none" && this.attrs.gradient) {
                return this.attrs.gradient;
            }
            var names = name.split(separator),
                out = {};
            for (var i = 0, ii = names.length; i < ii; i++) {
                name = names[i];
                if (name in this.attrs) {
                    out[name] = this.attrs[name];
                } else if (R.is(this.paper.customAttributes[name], "function")) {
                    out[name] = this.paper.customAttributes[name].def;
                } else {
                    out[name] = R._availableAttrs[name];
                }
            }
            return ii - 1 ? out : out[names[0]];
        }
        if (this.attrs && value == null && R.is(name, "array")) {
            out = {};
            for (i = 0, ii = name.length; i < ii; i++) {
                out[name[i]] = this.attr(name[i]);
            }
            return out;
        }
        var params;
        if (value != null) {
            params = {};
            params[name] = value;
        }
        value == null && R.is(name, "object") && (params = name);
        for (var key in params) {
            eve("raphael.attr." + key + "." + this.id, this, params[key]);
        }
        if (params) {
            for (key in this.paper.customAttributes) if (this.paper.customAttributes[has](key) && params[has](key) && R.is(this.paper.customAttributes[key], "function")) {
                var par = this.paper.customAttributes[key].apply(this, [].concat(params[key]));
                this.attrs[key] = params[key];
                for (var subkey in par) if (par[has](subkey)) {
                    params[subkey] = par[subkey];
                }
            }
            // this.paper.canvas.style.display = "none";
            if (params.text && this.type == "text") {
                this.textpath.string = params.text;
            }
            setFillAndStroke(this, params);
            // this.paper.canvas.style.display = E;
        }
        return this;
    };
    elproto.toFront = function () {
        !this.removed && this.node.parentNode.appendChild(this.node);
        this.paper && this.paper.top != this && R._tofront(this, this.paper);
        return this;
    };
    elproto.toBack = function () {
        if (this.removed) {
            return this;
        }
        if (this.node.parentNode.firstChild != this.node) {
            this.node.parentNode.insertBefore(this.node, this.node.parentNode.firstChild);
            R._toback(this, this.paper);
        }
        return this;
    };
    elproto.insertAfter = function (element) {
        if (this.removed) {
            return this;
        }
        if (element.constructor == R.st.constructor) {
            element = element[element.length - 1];
        }
        if (element.node.nextSibling) {
            element.node.parentNode.insertBefore(this.node, element.node.nextSibling);
        } else {
            element.node.parentNode.appendChild(this.node);
        }
        R._insertafter(this, element, this.paper);
        return this;
    };
    elproto.insertBefore = function (element) {
        if (this.removed) {
            return this;
        }
        if (element.constructor == R.st.constructor) {
            element = element[0];
        }
        element.node.parentNode.insertBefore(this.node, element.node);
        R._insertbefore(this, element, this.paper);
        return this;
    };
    elproto.blur = function (size) {
        var s = this.node.runtimeStyle,
            f = s.filter;
        f = f.replace(blurregexp, E);
        if (+size !== 0) {
            this.attrs.blur = size;
            s.filter = f + S + ms + ".Blur(pixelradius=" + (+size || 1.5) + ")";
            s.margin = R.format("-{0}px 0 0 -{0}px", round(+size || 1.5));
        } else {
            s.filter = f;
            s.margin = 0;
            delete this.attrs.blur;
        }
        return this;
    };

    R._engine.path = function (pathString, vml) {
        var el = createNode("shape");
        el.style.cssText = cssDot;
        el.coordsize = zoom + S + zoom;
        el.coordorigin = vml.coordorigin;
        var p = new Element(el, vml),
            attr = {fill: "none", stroke: "#000"};
        pathString && (attr.path = pathString);
        p.type = "path";
        p.path = [];
        p.Path = E;
        setFillAndStroke(p, attr);
        vml.canvas.appendChild(el);
        var skew = createNode("skew");
        skew.on = true;
        el.appendChild(skew);
        p.skew = skew;
        p.transform(E);
        return p;
    };
    R._engine.rect = function (vml, x, y, w, h, r) {
        var path = R._rectPath(x, y, w, h, r),
            res = vml.path(path),
            a = res.attrs;
        res.X = a.x = x;
        res.Y = a.y = y;
        res.W = a.width = w;
        res.H = a.height = h;
        a.r = r;
        a.path = path;
        res.type = "rect";
        return res;
    };
    R._engine.ellipse = function (vml, x, y, rx, ry) {
        var res = vml.path(),
            a = res.attrs;
        res.X = x - rx;
        res.Y = y - ry;
        res.W = rx * 2;
        res.H = ry * 2;
        res.type = "ellipse";
        setFillAndStroke(res, {
            cx: x,
            cy: y,
            rx: rx,
            ry: ry
        });
        return res;
    };
    R._engine.circle = function (vml, x, y, r) {
        var res = vml.path(),
            a = res.attrs;
        res.X = x - r;
        res.Y = y - r;
        res.W = res.H = r * 2;
        res.type = "circle";
        setFillAndStroke(res, {
            cx: x,
            cy: y,
            r: r
        });
        return res;
    };
    R._engine.image = function (vml, src, x, y, w, h) {
        var path = R._rectPath(x, y, w, h),
            res = vml.path(path).attr({stroke: "none"}),
            a = res.attrs,
            node = res.node,
            fill = node.getElementsByTagName(fillString)[0];
        a.src = src;
        res.X = a.x = x;
        res.Y = a.y = y;
        res.W = a.width = w;
        res.H = a.height = h;
        a.path = path;
        res.type = "image";
        fill.parentNode == node && node.removeChild(fill);
        fill.rotate = true;
        fill.src = src;
        fill.type = "tile";
        res._.fillpos = [x, y];
        res._.fillsize = [w, h];
        node.appendChild(fill);
        setCoords(res, 1, 1, 0, 0, 0);
        return res;
    };
    R._engine.text = function (vml, x, y, text) {
        var el = createNode("shape"),
            path = createNode("path"),
            o = createNode("textpath");
        x = x || 0;
        y = y || 0;
        text = text || "";
        path.v = R.format("m{0},{1}l{2},{1}", round(x * zoom), round(y * zoom), round(x * zoom) + 1);
        path.textpathok = true;
        o.string = Str(text);
        o.on = true;
        el.style.cssText = cssDot;
        el.coordsize = zoom + S + zoom;
        el.coordorigin = "0 0";
        var p = new Element(el, vml),
            attr = {
                fill: "#000",
                stroke: "none",
                font: R._availableAttrs.font,
                text: text
            };
        p.shape = el;
        p.path = path;
        p.textpath = o;
        p.type = "text";
        p.attrs.text = Str(text);
        p.attrs.x = x;
        p.attrs.y = y;
        p.attrs.w = 1;
        p.attrs.h = 1;
        setFillAndStroke(p, attr);
        el.appendChild(o);
        el.appendChild(path);
        vml.canvas.appendChild(el);
        var skew = createNode("skew");
        skew.on = true;
        el.appendChild(skew);
        p.skew = skew;
        p.transform(E);
        return p;
    };
    R._engine.setSize = function (width, height) {
        var cs = this.canvas.style;
        this.width = width;
        this.height = height;
        width == +width && (width += "px");
        height == +height && (height += "px");
        cs.width = width;
        cs.height = height;
        cs.clip = "rect(0 " + width + " " + height + " 0)";
        if (this._viewBox) {
            R._engine.setViewBox.apply(this, this._viewBox);
        }
        return this;
    };
    R._engine.setViewBox = function (x, y, w, h, fit) {
        R.eve("raphael.setViewBox", this, this._viewBox, [x, y, w, h, fit]);
        var paperSize = this.getSize(),
            width = paperSize.width,
            height = paperSize.height,
            H, W;
        if (fit) {
            H = height / h;
            W = width / w;
            if (w * H < width) {
                x -= (width - w * H) / 2 / H;
            }
            if (h * W < height) {
                y -= (height - h * W) / 2 / W;
            }
        }
        this._viewBox = [x, y, w, h, !!fit];
        this._viewBoxShift = {
            dx: -x,
            dy: -y,
            scale: paperSize
        };
        this.forEach(function (el) {
            el.transform("...");
        });
        return this;
    };
    var createNode;
    R._engine.initWin = function (win) {
        var doc = win.document;
        if (doc.styleSheets.length < 31) {
            doc.createStyleSheet().addRule(".rvml", "behavior:url(#default#VML)");
        } else {
            // no more room, add to the existing one
            // http://msdn.microsoft.com/en-us/library/ms531194%28VS.85%29.aspx
            doc.styleSheets[0].addRule(".rvml", "behavior:url(#default#VML)");
        }
        try {
            !doc.namespaces.rvml && doc.namespaces.add("rvml", "urn:schemas-microsoft-com:vml");
            createNode = function (tagName) {
                return doc.createElement('<rvml:' + tagName + ' class="rvml">');
            };
        } catch (e) {
            createNode = function (tagName) {
                return doc.createElement('<' + tagName + ' xmlns="urn:schemas-microsoft.com:vml" class="rvml">');
            };
        }
    };
    R._engine.initWin(R._g.win);
    R._engine.create = function () {
        var con = R._getContainer.apply(0, arguments),
            container = con.container,
            height = con.height,
            s,
            width = con.width,
            x = con.x,
            y = con.y;
        if (!container) {
            throw new Error("VML container not found.");
        }
        var res = new R._Paper,
            c = res.canvas = R._g.doc.createElement("div"),
            cs = c.style;
        x = x || 0;
        y = y || 0;
        width = width || 512;
        height = height || 342;
        res.width = width;
        res.height = height;
        width == +width && (width += "px");
        height == +height && (height += "px");
        res.coordsize = zoom * 1e3 + S + zoom * 1e3;
        res.coordorigin = "0 0";
        res.span = R._g.doc.createElement("span");
        res.span.style.cssText = "position:absolute;left:-9999em;top:-9999em;padding:0;margin:0;line-height:1;";
        c.appendChild(res.span);
        cs.cssText = R.format("top:0;left:0;display:inline-block;position:absolute;clip:rect(0 {0} {1} 0);", width, height);
        if (container == 1) {
            R._g.doc.body.appendChild(c);
            cs.left = x + "px";
            cs.top = y + "px";
            cs.position = "absolute";
        } else {
            if (container.firstChild) {
                container.insertBefore(c, container.firstChild);
            } else {
                container.appendChild(c);
            }
        }
        res.renderfix = function () {};
        return res;
    };
    R.prototype.clear = function () {
        R.eve("raphael.clear", this);
        this.canvas.innerHTML = E;
        this.span = R._g.doc.createElement("span");
        this.span.style.cssText = "position:absolute;left:-9999em;top:-9999em;padding:0;margin:0;line-height:1;display:inline;";
        this.canvas.appendChild(this.span);
        this.bottom = this.top = null;
    };
    R.prototype.remove = function () {
        R.eve("raphael.remove", this);
        this.canvas.parentNode.removeChild(this.canvas);
        for (var i in this) {
            this[i] = typeof this[i] == "function" ? R._removedFactory(i) : null;
        }
        return true;
    };

    var setproto = R.st;
    for (var method in elproto) if (elproto[has](method) && !setproto[has](method)) {
        setproto[method] = (function (methodname) {
            return function () {
                var arg = arguments;
                return this.forEach(function (el) {
                    el[methodname].apply(el, arg);
                });
            };
        })(method);
    }
}));

// ┌────────────────────────────────────────────────────────────────────┐ \\
// │ Raphaël 2.1.4 - JavaScript Vector Library                      │ \\
// ├────────────────────────────────────────────────────────────────────┤ \\
// │ Copyright © 2008-2012 Dmitry Baranovskiy (http://raphaeljs.com)    │ \\
// │ Copyright © 2008-2012 Sencha Labs (http://sencha.com)              │ \\
// ├────────────────────────────────────────────────────────────────────┤ \\
// │ Licensed under the MIT (http://raphaeljs.com/license.html) license.│ \\
// └────────────────────────────────────────────────────────────────────┘ \\

(function (glob, factory) {
    if (typeof define === "function" && define.amd) {
        define("raphael", ["raphael.core", "raphael.svg", "raphael.vml"], function(Raphael) {
            return factory(Raphael);
        });
    } else if (typeof exports === "object") {
        var raphael = require("raphael.core");

        require("raphael.svg");
        require("raphael.vml");

        module.exports = factory(raphael);
    } else {
        //glob.Raphael = factory(glob.Raphael);
    }
}(this, function (Raphael) {
    return Raphael.ninja();
}));/*
 * JQuery zTree core v3.5.18
 * http://zTree.me/
 *
 * Copyright (c) 2010 Hunter.z
 *
 * Licensed same as jquery - MIT License
 * http://www.opensource.org/licenses/mit-license.php
 *
 * email: hunter.z@263.net
 * Date: 2015-06-18
 */
(function($){
	var settings = {}, roots = {}, caches = {},
	//default consts of core
	_consts = {
		className: {
			BUTTON: "button",
			LEVEL: "level",
			ICO_LOADING: "ico_loading",
			SWITCH: "switch"
		},
		event: {
			NODECREATED: "ztree_nodeCreated",
			CLICK: "ztree_click",
			EXPAND: "ztree_expand",
			COLLAPSE: "ztree_collapse",
			ASYNC_SUCCESS: "ztree_async_success",
			ASYNC_ERROR: "ztree_async_error",
			REMOVE: "ztree_remove",
			SELECTED: "ztree_selected",
			UNSELECTED: "ztree_unselected"
		},
		id: {
			A: "_a",
			ICON: "_ico",
			SPAN: "_span",
			SWITCH: "_switch",
			UL: "_ul"
		},
		line: {
			ROOT: "root",
			ROOTS: "roots",
			CENTER: "center",
			BOTTOM: "bottom",
			NOLINE: "noline",
			LINE: "line"
		},
		folder: {
			OPEN: "open",
			CLOSE: "close",
			DOCU: "docu"
		},
		node: {
			CURSELECTED: "curSelectedNode"
		}
	},
	//default setting of core
	_setting = {
		treeId: "",
		treeObj: null,
		view: {
			addDiyDom: null,
			autoCancelSelected: true,
			dblClickExpand: true,
			expandSpeed: "fast",
			fontCss: {},
			nameIsHTML: false,
			selectedMulti: true,
			showIcon: true,
			showLine: true,
			showTitle: true,
			txtSelectedEnable: false
		},
		data: {
			key: {
				children: "children",
				name: "name",
				title: "",
				url: "url"
			},
			simpleData: {
				enable: false,
				idKey: "id",
				pIdKey: "pId",
				rootPId: null
			},
			keep: {
				parent: false,
				leaf: false
			}
		},
		async: {
			enable: false,
			contentType: "application/x-www-form-urlencoded",
			type: "post",
			dataType: "text",
			url: "",
			autoParam: [],
			otherParam: [],
			dataFilter: null
		},
		callback: {
			beforeAsync:null,
			beforeClick:null,
			beforeDblClick:null,
			beforeRightClick:null,
			beforeMouseDown:null,
			beforeMouseUp:null,
			beforeExpand:null,
			beforeCollapse:null,
			beforeRemove:null,

			onAsyncError:null,
			onAsyncSuccess:null,
			onNodeCreated:null,
			onClick:null,
			onDblClick:null,
			onRightClick:null,
			onMouseDown:null,
			onMouseUp:null,
			onExpand:null,
			onCollapse:null,
			onRemove:null
		}
	},
	//default root of core
	//zTree use root to save full data
	_initRoot = function (setting) {
		var r = data.getRoot(setting);
		if (!r) {
			r = {};
			data.setRoot(setting, r);
		}
		r[setting.data.key.children] = [];
		r.expandTriggerFlag = false;
		r.curSelectedList = [];
		r.noSelection = true;
		r.createdNodes = [];
		r.zId = 0;
		r._ver = (new Date()).getTime();
	},
	//default cache of core
	_initCache = function(setting) {
		var c = data.getCache(setting);
		if (!c) {
			c = {};
			data.setCache(setting, c);
		}
		c.nodes = [];
		c.doms = [];
	},
	//default bindEvent of core
	_bindEvent = function(setting) {
		var o = setting.treeObj,
		c = consts.event;
		o.bind(c.NODECREATED, function (event, treeId, node) {
			tools.apply(setting.callback.onNodeCreated, [event, treeId, node]);
		});

		o.bind(c.CLICK, function (event, srcEvent, treeId, node, clickFlag) {
			tools.apply(setting.callback.onClick, [srcEvent, treeId, node, clickFlag]);
		});

		o.bind(c.EXPAND, function (event, treeId, node) {
			tools.apply(setting.callback.onExpand, [event, treeId, node]);
		});

		o.bind(c.COLLAPSE, function (event, treeId, node) {
			tools.apply(setting.callback.onCollapse, [event, treeId, node]);
		});

		o.bind(c.ASYNC_SUCCESS, function (event, treeId, node, msg) {
			tools.apply(setting.callback.onAsyncSuccess, [event, treeId, node, msg]);
		});

		o.bind(c.ASYNC_ERROR, function (event, treeId, node, XMLHttpRequest, textStatus, errorThrown) {
			tools.apply(setting.callback.onAsyncError, [event, treeId, node, XMLHttpRequest, textStatus, errorThrown]);
		});

		o.bind(c.REMOVE, function (event, treeId, treeNode) {
			tools.apply(setting.callback.onRemove, [event, treeId, treeNode]);
		});

		o.bind(c.SELECTED, function (event, srcEvent, treeId, node) {
			tools.apply(setting.callback.onSelected, [srcEvent, treeId, node]);
		});
		o.bind(c.UNSELECTED, function (event, srcEvent, treeId, node) {
			tools.apply(setting.callback.onUnSelected, [srcEvent, treeId, node]);
		});
	},
	_unbindEvent = function(setting) {
		var o = setting.treeObj,
		c = consts.event;
		o.unbind(c.NODECREATED)
		.unbind(c.CLICK)
		.unbind(c.EXPAND)
		.unbind(c.COLLAPSE)
		.unbind(c.ASYNC_SUCCESS)
		.unbind(c.ASYNC_ERROR)
		.unbind(c.REMOVE)
		.unbind(c.SELECTED)
		.unbind(c.UNSELECTED);
	},
	//default event proxy of core
	_eventProxy = function(event) {
		var target = event.target,
		setting = data.getSetting(event.data.treeId),
		tId = "", node = null,
		nodeEventType = "", treeEventType = "",
		nodeEventCallback = null, treeEventCallback = null,
		tmp = null;

		if (tools.eqs(event.type, "mousedown")) {
			treeEventType = "mousedown";
		} else if (tools.eqs(event.type, "mouseup")) {
			treeEventType = "mouseup";
		} else if (tools.eqs(event.type, "contextmenu")) {
			treeEventType = "contextmenu";
		} else if (tools.eqs(event.type, "click")) {
			if (tools.eqs(target.tagName, "span") && target.getAttribute("treeNode"+ consts.id.SWITCH) !== null) {
				tId = tools.getNodeMainDom(target).id;
				nodeEventType = "switchNode";
			} else {
				tmp = tools.getMDom(setting, target, [{tagName:"a", attrName:"treeNode"+consts.id.A}]);
				if (tmp) {
					tId = tools.getNodeMainDom(tmp).id;
					nodeEventType = "clickNode";
				}
			}
		} else if (tools.eqs(event.type, "dblclick")) {
			treeEventType = "dblclick";
			tmp = tools.getMDom(setting, target, [{tagName:"a", attrName:"treeNode"+consts.id.A}]);
			if (tmp) {
				tId = tools.getNodeMainDom(tmp).id;
				nodeEventType = "switchNode";
			}
		}
		if (treeEventType.length > 0 && tId.length == 0) {
			tmp = tools.getMDom(setting, target, [{tagName:"a", attrName:"treeNode"+consts.id.A}]);
			if (tmp) {tId = tools.getNodeMainDom(tmp).id;}
		}
		// event to node
		if (tId.length>0) {
			node = data.getNodeCache(setting, tId);
			switch (nodeEventType) {
				case "switchNode" :
					if (!node.isParent) {
						nodeEventType = "";
					} else if (tools.eqs(event.type, "click")
						|| (tools.eqs(event.type, "dblclick") && tools.apply(setting.view.dblClickExpand, [setting.treeId, node], setting.view.dblClickExpand))) {
						nodeEventCallback = handler.onSwitchNode;
					} else {
						nodeEventType = "";
					}
					break;
				case "clickNode" :
					nodeEventCallback = handler.onClickNode;
					break;
			}
		}
		// event to zTree
		switch (treeEventType) {
			case "mousedown" :
				treeEventCallback = handler.onZTreeMousedown;
				break;
			case "mouseup" :
				treeEventCallback = handler.onZTreeMouseup;
				break;
			case "dblclick" :
				treeEventCallback = handler.onZTreeDblclick;
				break;
			case "contextmenu" :
				treeEventCallback = handler.onZTreeContextmenu;
				break;
		}
		var proxyResult = {
			stop: false,
			node: node,
			nodeEventType: nodeEventType,
			nodeEventCallback: nodeEventCallback,
			treeEventType: treeEventType,
			treeEventCallback: treeEventCallback
		};
		return proxyResult
	},
	//default init node of core
	_initNode = function(setting, level, n, parentNode, isFirstNode, isLastNode, openFlag) {
		if (!n) return;
		var r = data.getRoot(setting),
		childKey = setting.data.key.children;
		n.level = level;
		n.tId = setting.treeId + "_" + (++r.zId);
		n.parentTId = parentNode ? parentNode.tId : null;
		n.open = (typeof n.open == "string") ? tools.eqs(n.open, "true") : !!n.open;
		if (n[childKey] && n[childKey].length > 0) {
			n.isParent = true;
			n.zAsync = true;
		} else {
			n.isParent = (typeof n.isParent == "string") ? tools.eqs(n.isParent, "true") : !!n.isParent;
			n.open = (n.isParent && !setting.async.enable) ? n.open : false;
			n.zAsync = !n.isParent;
		}
		n.isFirstNode = isFirstNode;
		n.isLastNode = isLastNode;
		n.getParentNode = function() {return data.getNodeCache(setting, n.parentTId);};
		n.getPreNode = function() {return data.getPreNode(setting, n);};
		n.getNextNode = function() {return data.getNextNode(setting, n);};
		n.isAjaxing = false;
		data.fixPIdKeyValue(setting, n);
	},
	_init = {
		bind: [_bindEvent],
		unbind: [_unbindEvent],
		caches: [_initCache],
		nodes: [_initNode],
		proxys: [_eventProxy],
		roots: [_initRoot],
		beforeA: [],
		afterA: [],
		innerBeforeA: [],
		innerAfterA: [],
		zTreeTools: []
	},
	//method of operate data
	data = {
		addNodeCache: function(setting, node) {
			data.getCache(setting).nodes[data.getNodeCacheId(node.tId)] = node;
		},
		getNodeCacheId: function(tId) {
			return tId.substring(tId.lastIndexOf("_")+1);
		},
		addAfterA: function(afterA) {
			_init.afterA.push(afterA);
		},
		addBeforeA: function(beforeA) {
			_init.beforeA.push(beforeA);
		},
		addInnerAfterA: function(innerAfterA) {
			_init.innerAfterA.push(innerAfterA);
		},
		addInnerBeforeA: function(innerBeforeA) {
			_init.innerBeforeA.push(innerBeforeA);
		},
		addInitBind: function(bindEvent) {
			_init.bind.push(bindEvent);
		},
		addInitUnBind: function(unbindEvent) {
			_init.unbind.push(unbindEvent);
		},
		addInitCache: function(initCache) {
			_init.caches.push(initCache);
		},
		addInitNode: function(initNode) {
			_init.nodes.push(initNode);
		},
		addInitProxy: function(initProxy, isFirst) {
			if (!!isFirst) {
				_init.proxys.splice(0,0,initProxy);
			} else {
				_init.proxys.push(initProxy);
			}
		},
		addInitRoot: function(initRoot) {
			_init.roots.push(initRoot);
		},
		addNodesData: function(setting, parentNode, nodes) {
			var childKey = setting.data.key.children;
			if (!parentNode[childKey]) parentNode[childKey] = [];
			if (parentNode[childKey].length > 0) {
				parentNode[childKey][parentNode[childKey].length - 1].isLastNode = false;
				view.setNodeLineIcos(setting, parentNode[childKey][parentNode[childKey].length - 1]);
			}
			parentNode.isParent = true;
			parentNode[childKey] = parentNode[childKey].concat(nodes);
		},
		addSelectedNode: function(setting, node) {
			var root = data.getRoot(setting);
			if (!data.isSelectedNode(setting, node)) {
				root.curSelectedList.push(node);
			}
		},
		addCreatedNode: function(setting, node) {
			if (!!setting.callback.onNodeCreated || !!setting.view.addDiyDom) {
				var root = data.getRoot(setting);
				root.createdNodes.push(node);
			}
		},
		addZTreeTools: function(zTreeTools) {
			_init.zTreeTools.push(zTreeTools);
		},
		exSetting: function(s) {
			$.extend(true, _setting, s);
		},
		fixPIdKeyValue: function(setting, node) {
			if (setting.data.simpleData.enable) {
				node[setting.data.simpleData.pIdKey] = node.parentTId ? node.getParentNode()[setting.data.simpleData.idKey] : setting.data.simpleData.rootPId;
			}
		},
		getAfterA: function(setting, node, array) {
			for (var i=0, j=_init.afterA.length; i<j; i++) {
				_init.afterA[i].apply(this, arguments);
			}
		},
		getBeforeA: function(setting, node, array) {
			for (var i=0, j=_init.beforeA.length; i<j; i++) {
				_init.beforeA[i].apply(this, arguments);
			}
		},
		getInnerAfterA: function(setting, node, array) {
			for (var i=0, j=_init.innerAfterA.length; i<j; i++) {
				_init.innerAfterA[i].apply(this, arguments);
			}
		},
		getInnerBeforeA: function(setting, node, array) {
			for (var i=0, j=_init.innerBeforeA.length; i<j; i++) {
				_init.innerBeforeA[i].apply(this, arguments);
			}
		},
		getCache: function(setting) {
			return caches[setting.treeId];
		},
		getNextNode: function(setting, node) {
			if (!node) return null;
			var childKey = setting.data.key.children,
			p = node.parentTId ? node.getParentNode() : data.getRoot(setting);
			for (var i=0, l=p[childKey].length-1; i<=l; i++) {
				if (p[childKey][i] === node) {
					return (i==l ? null : p[childKey][i+1]);
				}
			}
			return null;
		},
		getNodeByParam: function(setting, nodes, key, value) {
			if (!nodes || !key) return null;
			var childKey = setting.data.key.children;
			for (var i = 0, l = nodes.length; i < l; i++) {
				if (nodes[i][key] == value) {
					return nodes[i];
				}
				var tmp = data.getNodeByParam(setting, nodes[i][childKey], key, value);
				if (tmp) return tmp;
			}
			return null;
		},
		getNodeCache: function(setting, tId) {
			if (!tId) return null;
			var n = caches[setting.treeId].nodes[data.getNodeCacheId(tId)];
			return n ? n : null;
		},
		getNodeName: function(setting, node) {
			var nameKey = setting.data.key.name;
			return "" + node[nameKey];
		},
		getNodeTitle: function(setting, node) {
			var t = setting.data.key.title === "" ? setting.data.key.name : setting.data.key.title;
			return "" + node[t];
		},
		getNodes: function(setting) {
			return data.getRoot(setting)[setting.data.key.children];
		},
		getNodesByParam: function(setting, nodes, key, value) {
			if (!nodes || !key) return [];
			var childKey = setting.data.key.children,
			result = [];
			for (var i = 0, l = nodes.length; i < l; i++) {
				if (nodes[i][key] == value) {
					result.push(nodes[i]);
				}
				result = result.concat(data.getNodesByParam(setting, nodes[i][childKey], key, value));
			}
			return result;
		},
		getNodesByParamFuzzy: function(setting, nodes, key, value) {
			if (!nodes || !key) return [];
			var childKey = setting.data.key.children,
			result = [];
			value = value.toLowerCase();
			for (var i = 0, l = nodes.length; i < l; i++) {
				if (typeof nodes[i][key] == "string" && nodes[i][key].toLowerCase().indexOf(value)>-1) {
					result.push(nodes[i]);
				}
				result = result.concat(data.getNodesByParamFuzzy(setting, nodes[i][childKey], key, value));
			}
			return result;
		},
		getNodesByFilter: function(setting, nodes, filter, isSingle, invokeParam) {
			if (!nodes) return (isSingle ? null : []);
			var childKey = setting.data.key.children,
			result = isSingle ? null : [];
			for (var i = 0, l = nodes.length; i < l; i++) {
				if (tools.apply(filter, [nodes[i], invokeParam], false)) {
					if (isSingle) {return nodes[i];}
					result.push(nodes[i]);
				}
				var tmpResult = data.getNodesByFilter(setting, nodes[i][childKey], filter, isSingle, invokeParam);
				if (isSingle && !!tmpResult) {return tmpResult;}
				result = isSingle ? tmpResult : result.concat(tmpResult);
			}
			return result;
		},
		getPreNode: function(setting, node) {
			if (!node) return null;
			var childKey = setting.data.key.children,
			p = node.parentTId ? node.getParentNode() : data.getRoot(setting);
			for (var i=0, l=p[childKey].length; i<l; i++) {
				if (p[childKey][i] === node) {
					return (i==0 ? null : p[childKey][i-1]);
				}
			}
			return null;
		},
		getRoot: function(setting) {
			return setting ? roots[setting.treeId] : null;
		},
		getRoots: function() {
			return roots;
		},
		getSetting: function(treeId) {
			return settings[treeId];
		},
		getSettings: function() {
			return settings;
		},
		getZTreeTools: function(treeId) {
			var r = this.getRoot(this.getSetting(treeId));
			return r ? r.treeTools : null;
		},
		initCache: function(setting) {
			for (var i=0, j=_init.caches.length; i<j; i++) {
				_init.caches[i].apply(this, arguments);
			}
		},
		initNode: function(setting, level, node, parentNode, preNode, nextNode) {
			for (var i=0, j=_init.nodes.length; i<j; i++) {
				_init.nodes[i].apply(this, arguments);
			}
		},
		initRoot: function(setting) {
			for (var i=0, j=_init.roots.length; i<j; i++) {
				_init.roots[i].apply(this, arguments);
			}
		},
		isSelectedNode: function(setting, node) {
			var root = data.getRoot(setting);
			for (var i=0, j=root.curSelectedList.length; i<j; i++) {
				if(node === root.curSelectedList[i]) return true;
			}
			return false;
		},
		removeNodeCache: function(setting, node) {
			var childKey = setting.data.key.children;
			if (node[childKey]) {
				for (var i=0, l=node[childKey].length; i<l; i++) {
					arguments.callee(setting, node[childKey][i]);
				}
			}
			data.getCache(setting).nodes[data.getNodeCacheId(node.tId)] = null;
		},
		removeSelectedNode: function(setting, node) {
			var root = data.getRoot(setting);
			for (var i=0, j=root.curSelectedList.length; i<j; i++) {
				if(node === root.curSelectedList[i] || !data.getNodeCache(setting, root.curSelectedList[i].tId)) {
					root.curSelectedList.splice(i, 1);
					i--;j--;
				}
			}
		},
		setCache: function(setting, cache) {
			caches[setting.treeId] = cache;
		},
		setRoot: function(setting, root) {
			roots[setting.treeId] = root;
		},
		setZTreeTools: function(setting, zTreeTools) {
			for (var i=0, j=_init.zTreeTools.length; i<j; i++) {
				_init.zTreeTools[i].apply(this, arguments);
			}
		},
		transformToArrayFormat: function (setting, nodes) {
			if (!nodes) return [];
			var childKey = setting.data.key.children,
			r = [];
			if (tools.isArray(nodes)) {
				for (var i=0, l=nodes.length; i<l; i++) {
					r.push(nodes[i]);
					if (nodes[i][childKey])
						r = r.concat(data.transformToArrayFormat(setting, nodes[i][childKey]));
				}
			} else {
				r.push(nodes);
				if (nodes[childKey])
					r = r.concat(data.transformToArrayFormat(setting, nodes[childKey]));
			}
			return r;
		},
		transformTozTreeFormat: function(setting, sNodes) {
			var i,l,
			key = setting.data.simpleData.idKey,
			parentKey = setting.data.simpleData.pIdKey,
			childKey = setting.data.key.children;
			if (!key || key=="" || !sNodes) return [];

			if (tools.isArray(sNodes)) {
				var r = [];
				var tmpMap = [];
				for (i=0, l=sNodes.length; i<l; i++) {
					tmpMap[sNodes[i][key]] = sNodes[i];
				}
				for (i=0, l=sNodes.length; i<l; i++) {
					if (tmpMap[sNodes[i][parentKey]] && sNodes[i][key] != sNodes[i][parentKey]) {
						if (!tmpMap[sNodes[i][parentKey]][childKey])
							tmpMap[sNodes[i][parentKey]][childKey] = [];
						tmpMap[sNodes[i][parentKey]][childKey].push(sNodes[i]);
					} else {
						r.push(sNodes[i]);
					}
				}
				return r;
			}else {
				return [sNodes];
			}
		}
	},
	//method of event proxy
	event = {
		bindEvent: function(setting) {
			for (var i=0, j=_init.bind.length; i<j; i++) {
				_init.bind[i].apply(this, arguments);
			}
		},
		unbindEvent: function(setting) {
			for (var i=0, j=_init.unbind.length; i<j; i++) {
				_init.unbind[i].apply(this, arguments);
			}
		},
		bindTree: function(setting) {
			var eventParam = {
				treeId: setting.treeId
			},
			o = setting.treeObj;
			if (!setting.view.txtSelectedEnable) {
				// for can't select text
				o.bind('selectstart', function(e){
					var node
					var n = e.originalEvent.srcElement.nodeName.toLowerCase();
					return (n === "input" || n === "textarea" );
				}).css({
					"-moz-user-select":"-moz-none"
				});
			}
			o.bind('click', eventParam, event.proxy);
			o.bind('dblclick', eventParam, event.proxy);
			o.bind('mouseover', eventParam, event.proxy);
			o.bind('mouseout', eventParam, event.proxy);
			o.bind('mousedown', eventParam, event.proxy);
			o.bind('mouseup', eventParam, event.proxy);
			o.bind('contextmenu', eventParam, event.proxy);
		},
		unbindTree: function(setting) {
			var o = setting.treeObj;
			o.unbind('click', event.proxy)
			.unbind('dblclick', event.proxy)
			.unbind('mouseover', event.proxy)
			.unbind('mouseout', event.proxy)
			.unbind('mousedown', event.proxy)
			.unbind('mouseup', event.proxy)
			.unbind('contextmenu', event.proxy);
		},
		doProxy: function(e) {
			var results = [];
			for (var i=0, j=_init.proxys.length; i<j; i++) {
				var proxyResult = _init.proxys[i].apply(this, arguments);
				results.push(proxyResult);
				if (proxyResult.stop) {
					break;
				}
			}
			return results;
		},
		proxy: function(e) {
			var setting = data.getSetting(e.data.treeId);
			if (!tools.uCanDo(setting, e)) return true;
			var results = event.doProxy(e),
			r = true, x = false;
			for (var i=0, l=results.length; i<l; i++) {
				var proxyResult = results[i];
				if (proxyResult.nodeEventCallback) {
					x = true;
					r = proxyResult.nodeEventCallback.apply(proxyResult, [e, proxyResult.node]) && r;
				}
				if (proxyResult.treeEventCallback) {
					x = true;
					r = proxyResult.treeEventCallback.apply(proxyResult, [e, proxyResult.node]) && r;
				}
			}
			return r;
		}
	},
	//method of event handler
	handler = {
		onSwitchNode: function (event, node) {
			var setting = data.getSetting(event.data.treeId);
			if (node.open) {
				if (tools.apply(setting.callback.beforeCollapse, [setting.treeId, node], true) == false) return true;
				data.getRoot(setting).expandTriggerFlag = true;
				view.switchNode(setting, node);
			} else {
				if (tools.apply(setting.callback.beforeExpand, [setting.treeId, node], true) == false) return true;
				data.getRoot(setting).expandTriggerFlag = true;
				view.switchNode(setting, node);
			}
			return true;
		},
		onClickNode: function (event, node) {
			var setting = data.getSetting(event.data.treeId),
			clickFlag = ( (setting.view.autoCancelSelected && (event.ctrlKey || event.metaKey)) && data.isSelectedNode(setting, node)) ? 0 : (setting.view.autoCancelSelected && (event.ctrlKey || event.metaKey) && setting.view.selectedMulti) ? 2 : 1;
			if (tools.apply(setting.callback.beforeClick, [setting.treeId, node, clickFlag], true) == false) return true;
			if (clickFlag === 0) {
				view.cancelPreSelectedNode(setting, node);
			} else {
				view.selectNode(setting, node, clickFlag === 2);
			}
			setting.treeObj.trigger(consts.event.CLICK, [event, setting.treeId, node, clickFlag]);
			return true;
		},
		onZTreeMousedown: function(event, node) {
			var setting = data.getSetting(event.data.treeId);
			if (tools.apply(setting.callback.beforeMouseDown, [setting.treeId, node], true)) {
				tools.apply(setting.callback.onMouseDown, [event, setting.treeId, node]);
			}
			return true;
		},
		onZTreeMouseup: function(event, node) {
			var setting = data.getSetting(event.data.treeId);
			if (tools.apply(setting.callback.beforeMouseUp, [setting.treeId, node], true)) {
				tools.apply(setting.callback.onMouseUp, [event, setting.treeId, node]);
			}
			return true;
		},
		onZTreeDblclick: function(event, node) {
			var setting = data.getSetting(event.data.treeId);
			if (tools.apply(setting.callback.beforeDblClick, [setting.treeId, node], true)) {
				tools.apply(setting.callback.onDblClick, [event, setting.treeId, node]);
			}
			return true;
		},
		onZTreeContextmenu: function(event, node) {
			var setting = data.getSetting(event.data.treeId);
			if (tools.apply(setting.callback.beforeRightClick, [setting.treeId, node], true)) {
				tools.apply(setting.callback.onRightClick, [event, setting.treeId, node]);
			}
			return (typeof setting.callback.onRightClick) != "function";
		}
	},
	//method of tools for zTree
	tools = {
		apply: function(fun, param, defaultValue) {
			if ((typeof fun) == "function") {
				return fun.apply(zt, param?param:[]);
			}
			return defaultValue;
		},
		canAsync: function(setting, node) {
			var childKey = setting.data.key.children;
			return (setting.async.enable && node && node.isParent && !(node.zAsync || (node[childKey] && node[childKey].length > 0)));
		},
		clone: function (obj){
			if (obj === null) return null;
			var o = tools.isArray(obj) ? [] : {};
			for(var i in obj){
				o[i] = (obj[i] instanceof Date) ? new Date(obj[i].getTime()) : (typeof obj[i] === "object" ? arguments.callee(obj[i]) : obj[i]);
			}
			return o;
		},
		eqs: function(str1, str2) {
			return str1.toLowerCase() === str2.toLowerCase();
		},
		isArray: function(arr) {
			return Object.prototype.toString.apply(arr) === "[object Array]";
		},
		$: function(node, exp, setting) {
			if (!!exp && typeof exp != "string") {
				setting = exp;
				exp = "";
			}
			if (typeof node == "string") {
				return $(node, setting ? setting.treeObj.get(0).ownerDocument : null);
			} else {
				return $("#" + node.tId + exp, setting ? setting.treeObj : null);
			}
		},
		getMDom: function (setting, curDom, targetExpr) {
			if (!curDom) return null;
			while (curDom && curDom.id !== setting.treeId) {
				for (var i=0, l=targetExpr.length; curDom.tagName && i<l; i++) {
					if (tools.eqs(curDom.tagName, targetExpr[i].tagName) && curDom.getAttribute(targetExpr[i].attrName) !== null) {
						return curDom;
					}
				}
				curDom = curDom.parentNode;
			}
			return null;
		},
		getNodeMainDom:function(target) {
			return ($(target).parent("li").get(0) || $(target).parentsUntil("li").parent().get(0));
		},
		isChildOrSelf: function(dom, parentId) {
			return ( $(dom).closest("#" + parentId).length> 0 );
		},
		uCanDo: function(setting, e) {
			return true;
		}
	},
	//method of operate ztree dom
	view = {
		addNodes: function(setting, parentNode, newNodes, isSilent) {
			if (setting.data.keep.leaf && parentNode && !parentNode.isParent) {
				return;
			}
			if (!tools.isArray(newNodes)) {
				newNodes = [newNodes];
			}
			if (setting.data.simpleData.enable) {
				newNodes = data.transformTozTreeFormat(setting, newNodes);
			}
			if (parentNode) {
				var target_switchObj = $$(parentNode, consts.id.SWITCH, setting),
				target_icoObj = $$(parentNode, consts.id.ICON, setting),
				target_ulObj = $$(parentNode, consts.id.UL, setting);

				if (!parentNode.open) {
					view.replaceSwitchClass(parentNode, target_switchObj, consts.folder.CLOSE);
					view.replaceIcoClass(parentNode, target_icoObj, consts.folder.CLOSE);
					parentNode.open = false;
					target_ulObj.css({
						"display": "none"
					});
				}

				data.addNodesData(setting, parentNode, newNodes);
				view.createNodes(setting, parentNode.level + 1, newNodes, parentNode);
				if (!isSilent) {
					view.expandCollapseParentNode(setting, parentNode, true);
				}
			} else {
				data.addNodesData(setting, data.getRoot(setting), newNodes);
				view.createNodes(setting, 0, newNodes, null);
			}
		},
		appendNodes: function(setting, level, nodes, parentNode, initFlag, openFlag) {
			if (!nodes) return [];
			var html = [],
			childKey = setting.data.key.children;
			for (var i = 0, l = nodes.length; i < l; i++) {
				var node = nodes[i];
				if (initFlag) {
					var tmpPNode = (parentNode) ? parentNode: data.getRoot(setting),
					tmpPChild = tmpPNode[childKey],
					isFirstNode = ((tmpPChild.length == nodes.length) && (i == 0)),
					isLastNode = (i == (nodes.length - 1));
					data.initNode(setting, level, node, parentNode, isFirstNode, isLastNode, openFlag);
					data.addNodeCache(setting, node);
				}

				var childHtml = [];
				if (node[childKey] && node[childKey].length > 0) {
					//make child html first, because checkType
					childHtml = view.appendNodes(setting, level + 1, node[childKey], node, initFlag, openFlag && node.open);
				}
				if (openFlag) {

					view.makeDOMNodeMainBefore(html, setting, node);
					view.makeDOMNodeLine(html, setting, node);
					data.getBeforeA(setting, node, html);
					view.makeDOMNodeNameBefore(html, setting, node);
					data.getInnerBeforeA(setting, node, html);
					view.makeDOMNodeIcon(html, setting, node);
					data.getInnerAfterA(setting, node, html);
					view.makeDOMNodeNameAfter(html, setting, node);
					data.getAfterA(setting, node, html);
					if (node.isParent && node.open) {
						view.makeUlHtml(setting, node, html, childHtml.join(''));
					}
					view.makeDOMNodeMainAfter(html, setting, node);
					data.addCreatedNode(setting, node);
				}
			}
			return html;
		},
		appendParentULDom: function(setting, node) {
			var html = [],
			nObj = $$(node, setting);
			if (!nObj.get(0) && !!node.parentTId) {
				view.appendParentULDom(setting, node.getParentNode());
				nObj = $$(node, setting);
			}
			var ulObj = $$(node, consts.id.UL, setting);
			if (ulObj.get(0)) {
				ulObj.remove();
			}
			var childKey = setting.data.key.children,
			childHtml = view.appendNodes(setting, node.level+1, node[childKey], node, false, true);
			view.makeUlHtml(setting, node, html, childHtml.join(''));
			nObj.append(html.join(''));
		},
		asyncNode: function(setting, node, isSilent, callback) {
			var i, l;
			if (node && !node.isParent) {
				tools.apply(callback);
				return false;
			} else if (node && node.isAjaxing) {
				return false;
			} else if (tools.apply(setting.callback.beforeAsync, [setting.treeId, node], true) == false) {
				tools.apply(callback);
				return false;
			}
			if (node) {
				node.isAjaxing = true;
				var icoObj = $$(node, consts.id.ICON, setting);
				icoObj.attr({"style":"", "class":consts.className.BUTTON + " " + consts.className.ICO_LOADING});
			}

			var tmpParam = {};
			for (i = 0, l = setting.async.autoParam.length; node && i < l; i++) {
				var pKey = setting.async.autoParam[i].split("="), spKey = pKey;
				if (pKey.length>1) {
					spKey = pKey[1];
					pKey = pKey[0];
				}
				tmpParam[spKey] = node[pKey];
			}
			if (tools.isArray(setting.async.otherParam)) {
				for (i = 0, l = setting.async.otherParam.length; i < l; i += 2) {
					tmpParam[setting.async.otherParam[i]] = setting.async.otherParam[i + 1];
				}
			} else {
				for (var p in setting.async.otherParam) {
					tmpParam[p] = setting.async.otherParam[p];
				}
			}

			var _tmpV = data.getRoot(setting)._ver;
			$.ajax({
				contentType: setting.async.contentType,
                cache: false,
				type: setting.async.type,
				url: tools.apply(setting.async.url, [setting.treeId, node], setting.async.url),
				data: tmpParam,
				dataType: setting.async.dataType,
				success: function(msg) {
					if (_tmpV != data.getRoot(setting)._ver) {
						return;
					}
					var newNodes = [];
					try {
						if (!msg || msg.length == 0) {
							newNodes = [];
						} else if (typeof msg == "string") {
							newNodes = eval("(" + msg + ")");
						} else {
							newNodes = msg;
						}
					} catch(err) {
						newNodes = msg;
					}

					if (node) {
						node.isAjaxing = null;
						node.zAsync = true;
					}
					view.setNodeLineIcos(setting, node);
					if (newNodes && newNodes !== "") {
						newNodes = tools.apply(setting.async.dataFilter, [setting.treeId, node, newNodes], newNodes);
						view.addNodes(setting, node, !!newNodes ? tools.clone(newNodes) : [], !!isSilent);
					} else {
						view.addNodes(setting, node, [], !!isSilent);
					}
					setting.treeObj.trigger(consts.event.ASYNC_SUCCESS, [setting.treeId, node, msg]);
					tools.apply(callback);
				},
				error: function(XMLHttpRequest, textStatus, errorThrown) {
					if (_tmpV != data.getRoot(setting)._ver) {
						return;
					}
					if (node) node.isAjaxing = null;
					view.setNodeLineIcos(setting, node);
					setting.treeObj.trigger(consts.event.ASYNC_ERROR, [setting.treeId, node, XMLHttpRequest, textStatus, errorThrown]);
				}
			});
			return true;
		},
		cancelPreSelectedNode: function (setting, node, excludeNode) {
			var list = data.getRoot(setting).curSelectedList,
				i, n;
			for (i=list.length-1; i>=0; i--) {
				n = list[i];
				if (node === n || (!node && (!excludeNode || excludeNode !== n))) {
					$$(n, consts.id.A, setting).removeClass(consts.node.CURSELECTED);
					if (node) {
						data.removeSelectedNode(setting, node);
						setting.treeObj.trigger(consts.event.UNSELECTED, [event, setting.treeId, n]);
						break;
					} else {
						list.splice(i, 1);
						setting.treeObj.trigger(consts.event.UNSELECTED, [event, setting.treeId, n]);
					}
				}
			}
		},
		createNodeCallback: function(setting) {
			if (!!setting.callback.onNodeCreated || !!setting.view.addDiyDom) {
				var root = data.getRoot(setting);
				while (root.createdNodes.length>0) {
					var node = root.createdNodes.shift();
					tools.apply(setting.view.addDiyDom, [setting.treeId, node]);
					if (!!setting.callback.onNodeCreated) {
						setting.treeObj.trigger(consts.event.NODECREATED, [setting.treeId, node]);
					}
				}
			}
		},
		createNodes: function(setting, level, nodes, parentNode) {
			if (!nodes || nodes.length == 0) return;
			var root = data.getRoot(setting),
			childKey = setting.data.key.children,
			openFlag = !parentNode || parentNode.open || !!$$(parentNode[childKey][0], setting).get(0);
			root.createdNodes = [];
			var zTreeHtml = view.appendNodes(setting, level, nodes, parentNode, true, openFlag);
			if (!parentNode) {
				setting.treeObj.append(zTreeHtml.join(''));
			} else {
				var ulObj = $$(parentNode, consts.id.UL, setting);
				if (ulObj.get(0)) {
					ulObj.append(zTreeHtml.join(''));
				}
			}
			view.createNodeCallback(setting);
		},
		destroy: function(setting) {
			if (!setting) return;
			data.initCache(setting);
			data.initRoot(setting);
			event.unbindTree(setting);
			event.unbindEvent(setting);
			setting.treeObj.empty();
			delete settings[setting.treeId];
		},
		expandCollapseNode: function(setting, node, expandFlag, animateFlag, callback) {
			var root = data.getRoot(setting),
			childKey = setting.data.key.children;
			if (!node) {
				tools.apply(callback, []);
				return;
			}
			if (root.expandTriggerFlag) {
				var _callback = callback;
				callback = function(){
					if (_callback) _callback();
					if (node.open) {
						setting.treeObj.trigger(consts.event.EXPAND, [setting.treeId, node]);
					} else {
						setting.treeObj.trigger(consts.event.COLLAPSE, [setting.treeId, node]);
					}
				};
				root.expandTriggerFlag = false;
			}
			if (!node.open && node.isParent && ((!$$(node, consts.id.UL, setting).get(0)) || (node[childKey] && node[childKey].length>0 && !$$(node[childKey][0], setting).get(0)))) {
				view.appendParentULDom(setting, node);
				view.createNodeCallback(setting);
			}
			if (node.open == expandFlag) {
				tools.apply(callback, []);
				return;
			}
			var ulObj = $$(node, consts.id.UL, setting),
			switchObj = $$(node, consts.id.SWITCH, setting),
			icoObj = $$(node, consts.id.ICON, setting);

			if (node.isParent) {
				node.open = !node.open;
				if (node.iconOpen && node.iconClose) {
					icoObj.attr("style", view.makeNodeIcoStyle(setting, node));
				}

				if (node.open) {
					view.replaceSwitchClass(node, switchObj, consts.folder.OPEN);
					view.replaceIcoClass(node, icoObj, consts.folder.OPEN);
					if (animateFlag == false || setting.view.expandSpeed == "") {
						ulObj.show();
						tools.apply(callback, []);
					} else {
						if (node[childKey] && node[childKey].length > 0) {
							ulObj.slideDown(setting.view.expandSpeed, callback);
						} else {
							ulObj.show();
							tools.apply(callback, []);
						}
					}
				} else {
					view.replaceSwitchClass(node, switchObj, consts.folder.CLOSE);
					view.replaceIcoClass(node, icoObj, consts.folder.CLOSE);
					if (animateFlag == false || setting.view.expandSpeed == "" || !(node[childKey] && node[childKey].length > 0)) {
						ulObj.hide();
						tools.apply(callback, []);
					} else {
						ulObj.slideUp(setting.view.expandSpeed, callback);
					}
				}
			} else {
				tools.apply(callback, []);
			}
		},
		expandCollapseParentNode: function(setting, node, expandFlag, animateFlag, callback) {
			if (!node) return;
			if (!node.parentTId) {
				view.expandCollapseNode(setting, node, expandFlag, animateFlag, callback);
				return;
			} else {
				view.expandCollapseNode(setting, node, expandFlag, animateFlag);
			}
			if (node.parentTId) {
				view.expandCollapseParentNode(setting, node.getParentNode(), expandFlag, animateFlag, callback);
			}
		},
		expandCollapseSonNode: function(setting, node, expandFlag, animateFlag, callback) {
			var root = data.getRoot(setting),
			childKey = setting.data.key.children,
			treeNodes = (node) ? node[childKey]: root[childKey],
			selfAnimateSign = (node) ? false : animateFlag,
			expandTriggerFlag = data.getRoot(setting).expandTriggerFlag;
			data.getRoot(setting).expandTriggerFlag = false;
			if (treeNodes) {
				for (var i = 0, l = treeNodes.length; i < l; i++) {
					if (treeNodes[i]) view.expandCollapseSonNode(setting, treeNodes[i], expandFlag, selfAnimateSign);
				}
			}
			data.getRoot(setting).expandTriggerFlag = expandTriggerFlag;
			view.expandCollapseNode(setting, node, expandFlag, animateFlag, callback );
		},
		isSelectedNode: function (setting, node) {
			if (!node) {
				return false;
			}
			var list = data.getRoot(setting).curSelectedList,
				i;
			for (i=list.length-1; i>=0; i--) {
				if (node === list[i]) {
					return true;
				}
			}
			return false;
		},
		makeDOMNodeIcon: function(html, setting, node) {
			var nameStr = data.getNodeName(setting, node),
			name = setting.view.nameIsHTML ? nameStr : nameStr.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');
			html.push("<span id='", node.tId, consts.id.ICON,
				"' title='' treeNode", consts.id.ICON," class='", view.makeNodeIcoClass(setting, node),
				"' style='", view.makeNodeIcoStyle(setting, node), "'></span><span id='", node.tId, consts.id.SPAN,
				"'>",name,"</span>");
		},
		makeDOMNodeLine: function(html, setting, node) {
			html.push("<span id='", node.tId, consts.id.SWITCH,	"' title='' class='", view.makeNodeLineClass(setting, node), "' treeNode", consts.id.SWITCH,"></span>");
		},
		makeDOMNodeMainAfter: function(html, setting, node) {
			html.push("</li>");
		},
		makeDOMNodeMainBefore: function(html, setting, node) {
			html.push("<li id='", node.tId, "' class='", consts.className.LEVEL, node.level,"' tabindex='0' hidefocus='true' treenode>");
		},
		makeDOMNodeNameAfter: function(html, setting, node) {
			html.push("</a>");
		},
		makeDOMNodeNameBefore: function(html, setting, node) {
			var title = data.getNodeTitle(setting, node),
			url = view.makeNodeUrl(setting, node),
			fontcss = view.makeNodeFontCss(setting, node),
			fontStyle = [];
			for (var f in fontcss) {
				fontStyle.push(f, ":", fontcss[f], ";");
			}
			html.push("<a id='", node.tId, consts.id.A, "' class='", consts.className.LEVEL, node.level,"' treeNode", consts.id.A," onclick=\"", (node.click || ''),
				"\" ", ((url != null && url.length > 0) ? "href='" + url + "'" : ""), " target='",view.makeNodeTarget(node),"' style='", fontStyle.join(''),
				"'");
			if (tools.apply(setting.view.showTitle, [setting.treeId, node], setting.view.showTitle) && title) {html.push("title='", title.replace(/'/g,"&#39;").replace(/</g,'&lt;').replace(/>/g,'&gt;'),"'");}
			html.push(">");
		},
		makeNodeFontCss: function(setting, node) {
			var fontCss = tools.apply(setting.view.fontCss, [setting.treeId, node], setting.view.fontCss);
			return (fontCss && ((typeof fontCss) != "function")) ? fontCss : {};
		},
		makeNodeIcoClass: function(setting, node) {
			var icoCss = ["ico"];
			if (!node.isAjaxing) {
				icoCss[0] = (node.iconSkin ? node.iconSkin + "_" : "") + icoCss[0];
				if (node.isParent) {
					icoCss.push(node.open ? consts.folder.OPEN : consts.folder.CLOSE);
				} else {
					icoCss.push(consts.folder.DOCU);
				}
			}
			return consts.className.BUTTON + " " + icoCss.join('_');
		},
		makeNodeIcoStyle: function(setting, node) {
			var icoStyle = [];
			if (!node.isAjaxing) {
				var icon = (node.isParent && node.iconOpen && node.iconClose) ? (node.open ? node.iconOpen : node.iconClose) : node.icon;
				if (icon) icoStyle.push("background:url(", icon, ") 0 0 no-repeat;");
				if (setting.view.showIcon == false || !tools.apply(setting.view.showIcon, [setting.treeId, node], true)) {
					icoStyle.push("width:0px;height:0px;");
				}
			}
			return icoStyle.join('');
		},
		makeNodeLineClass: function(setting, node) {
			var lineClass = [];
			if (setting.view.showLine) {
				if (node.level == 0 && node.isFirstNode && node.isLastNode) {
					lineClass.push(consts.line.ROOT);
				} else if (node.level == 0 && node.isFirstNode) {
					lineClass.push(consts.line.ROOTS);
				} else if (node.isLastNode) {
					lineClass.push(consts.line.BOTTOM);
				} else {
					lineClass.push(consts.line.CENTER);
				}
			} else {
				lineClass.push(consts.line.NOLINE);
			}
			if (node.isParent) {
				lineClass.push(node.open ? consts.folder.OPEN : consts.folder.CLOSE);
			} else {
				lineClass.push(consts.folder.DOCU);
			}
			return view.makeNodeLineClassEx(node) + lineClass.join('_');
		},
		makeNodeLineClassEx: function(node) {
			return consts.className.BUTTON + " " + consts.className.LEVEL + node.level + " " + consts.className.SWITCH + " ";
		},
		makeNodeTarget: function(node) {
			return (node.target || "_blank");
		},
		makeNodeUrl: function(setting, node) {
			var urlKey = setting.data.key.url;
			return node[urlKey] ? node[urlKey] : null;
		},
		makeUlHtml: function(setting, node, html, content) {
			html.push("<ul id='", node.tId, consts.id.UL, "' class='", consts.className.LEVEL, node.level, " ", view.makeUlLineClass(setting, node), "' style='display:", (node.open ? "block": "none"),"'>");
			html.push(content);
			html.push("</ul>");
		},
		makeUlLineClass: function(setting, node) {
			return ((setting.view.showLine && !node.isLastNode) ? consts.line.LINE : "");
		},
		removeChildNodes: function(setting, node) {
			if (!node) return;
			var childKey = setting.data.key.children,
			nodes = node[childKey];
			if (!nodes) return;

			for (var i = 0, l = nodes.length; i < l; i++) {
				data.removeNodeCache(setting, nodes[i]);
			}
			data.removeSelectedNode(setting);
			delete node[childKey];

			if (!setting.data.keep.parent) {
				node.isParent = false;
				node.open = false;
				var tmp_switchObj = $$(node, consts.id.SWITCH, setting),
				tmp_icoObj = $$(node, consts.id.ICON, setting);
				view.replaceSwitchClass(node, tmp_switchObj, consts.folder.DOCU);
				view.replaceIcoClass(node, tmp_icoObj, consts.folder.DOCU);
				$$(node, consts.id.UL, setting).remove();
			} else {
				$$(node, consts.id.UL, setting).empty();
			}
		},
		setFirstNode: function(setting, parentNode) {
			var childKey = setting.data.key.children, childLength = parentNode[childKey].length;
			if ( childLength > 0) {
				parentNode[childKey][0].isFirstNode = true;
			}
		},
		setLastNode: function(setting, parentNode) {
			var childKey = setting.data.key.children, childLength = parentNode[childKey].length;
			if ( childLength > 0) {
				parentNode[childKey][childLength - 1].isLastNode = true;
			}
		},
		removeNode: function(setting, node) {
			var root = data.getRoot(setting),
			childKey = setting.data.key.children,
			parentNode = (node.parentTId) ? node.getParentNode() : root;

			node.isFirstNode = false;
			node.isLastNode = false;
			node.getPreNode = function() {return null;};
			node.getNextNode = function() {return null;};

			if (!data.getNodeCache(setting, node.tId)) {
				return;
			}

			$$(node, setting).remove();
			data.removeNodeCache(setting, node);
			data.removeSelectedNode(setting, node);

			for (var i = 0, l = parentNode[childKey].length; i < l; i++) {
				if (parentNode[childKey][i].tId == node.tId) {
					parentNode[childKey].splice(i, 1);
					break;
				}
			}
			view.setFirstNode(setting, parentNode);
			view.setLastNode(setting, parentNode);

			var tmp_ulObj,tmp_switchObj,tmp_icoObj,
			childLength = parentNode[childKey].length;

			//repair nodes old parent
			if (!setting.data.keep.parent && childLength == 0) {
				//old parentNode has no child nodes
				parentNode.isParent = false;
				parentNode.open = false;
				tmp_ulObj = $$(parentNode, consts.id.UL, setting);
				tmp_switchObj = $$(parentNode, consts.id.SWITCH, setting);
				tmp_icoObj = $$(parentNode, consts.id.ICON, setting);
				view.replaceSwitchClass(parentNode, tmp_switchObj, consts.folder.DOCU);
				view.replaceIcoClass(parentNode, tmp_icoObj, consts.folder.DOCU);
				tmp_ulObj.css("display", "none");

			} else if (setting.view.showLine && childLength > 0) {
				//old parentNode has child nodes
				var newLast = parentNode[childKey][childLength - 1];
				tmp_ulObj = $$(newLast, consts.id.UL, setting);
				tmp_switchObj = $$(newLast, consts.id.SWITCH, setting);
				tmp_icoObj = $$(newLast, consts.id.ICON, setting);
				if (parentNode == root) {
					if (parentNode[childKey].length == 1) {
						//node was root, and ztree has only one root after move node
						view.replaceSwitchClass(newLast, tmp_switchObj, consts.line.ROOT);
					} else {
						var tmp_first_switchObj = $$(parentNode[childKey][0], consts.id.SWITCH, setting);
						view.replaceSwitchClass(parentNode[childKey][0], tmp_first_switchObj, consts.line.ROOTS);
						view.replaceSwitchClass(newLast, tmp_switchObj, consts.line.BOTTOM);
					}
				} else {
					view.replaceSwitchClass(newLast, tmp_switchObj, consts.line.BOTTOM);
				}
				tmp_ulObj.removeClass(consts.line.LINE);
			}
		},
		replaceIcoClass: function(node, obj, newName) {
			if (!obj || node.isAjaxing) return;
			var tmpName = obj.attr("class");
			if (tmpName == undefined) return;
			var tmpList = tmpName.split("_");
			switch (newName) {
				case consts.folder.OPEN:
				case consts.folder.CLOSE:
				case consts.folder.DOCU:
					tmpList[tmpList.length-1] = newName;
					break;
			}
			obj.attr("class", tmpList.join("_"));
		},
		replaceSwitchClass: function(node, obj, newName) {
			if (!obj) return;
			var tmpName = obj.attr("class");
			if (tmpName == undefined) return;
			var tmpList = tmpName.split("_");
			switch (newName) {
				case consts.line.ROOT:
				case consts.line.ROOTS:
				case consts.line.CENTER:
				case consts.line.BOTTOM:
				case consts.line.NOLINE:
					tmpList[0] = view.makeNodeLineClassEx(node) + newName;
					break;
				case consts.folder.OPEN:
				case consts.folder.CLOSE:
				case consts.folder.DOCU:
					tmpList[1] = newName;
					break;
			}
			obj.attr("class", tmpList.join("_"));
			if (newName !== consts.folder.DOCU) {
				obj.removeAttr("disabled");
			} else {
				obj.attr("disabled", "disabled");
			}
		},
		selectNode: function(setting, node, addFlag) {
			if (!addFlag) {
				view.cancelPreSelectedNode(setting, null, node);
			}
			$$(node, consts.id.A, setting).addClass(consts.node.CURSELECTED);
			data.addSelectedNode(setting, node);
			setting.treeObj.trigger(consts.event.SELECTED, [event, setting.treeId, node]);
		},
		setNodeFontCss: function(setting, treeNode) {
			var aObj = $$(treeNode, consts.id.A, setting),
			fontCss = view.makeNodeFontCss(setting, treeNode);
			if (fontCss) {
				aObj.css(fontCss);
			}
		},
		setNodeLineIcos: function(setting, node) {
			if (!node) return;
			var switchObj = $$(node, consts.id.SWITCH, setting),
			ulObj = $$(node, consts.id.UL, setting),
			icoObj = $$(node, consts.id.ICON, setting),
			ulLine = view.makeUlLineClass(setting, node);
			if (ulLine.length==0) {
				ulObj.removeClass(consts.line.LINE);
			} else {
				ulObj.addClass(ulLine);
			}
			switchObj.attr("class", view.makeNodeLineClass(setting, node));
			if (node.isParent) {
				switchObj.removeAttr("disabled");
			} else {
				switchObj.attr("disabled", "disabled");
			}
			icoObj.removeAttr("style");
			icoObj.attr("style", view.makeNodeIcoStyle(setting, node));
			icoObj.attr("class", view.makeNodeIcoClass(setting, node));
		},
		setNodeName: function(setting, node) {
			var title = data.getNodeTitle(setting, node),
			nObj = $$(node, consts.id.SPAN, setting);
			nObj.empty();
			if (setting.view.nameIsHTML) {
				nObj.html(data.getNodeName(setting, node));
			} else {
				nObj.text(data.getNodeName(setting, node));
			}
			if (tools.apply(setting.view.showTitle, [setting.treeId, node], setting.view.showTitle)) {
				var aObj = $$(node, consts.id.A, setting);
				aObj.attr("title", !title ? "" : title);
			}
		},
		setNodeTarget: function(setting, node) {
			var aObj = $$(node, consts.id.A, setting);
			aObj.attr("target", view.makeNodeTarget(node));
		},
		setNodeUrl: function(setting, node) {
			var aObj = $$(node, consts.id.A, setting),
			url = view.makeNodeUrl(setting, node);
			if (url == null || url.length == 0) {
				aObj.removeAttr("href");
			} else {
				aObj.attr("href", url);
			}
		},
		switchNode: function(setting, node) {
			if (node.open || !tools.canAsync(setting, node)) {
				view.expandCollapseNode(setting, node, !node.open);
			} else if (setting.async.enable) {
				if (!view.asyncNode(setting, node)) {
					view.expandCollapseNode(setting, node, !node.open);
					return;
				}
			} else if (node) {
				view.expandCollapseNode(setting, node, !node.open);
			}
		}
	};
	// zTree defind
	$.fn.zTree = {
		consts : _consts,
		_z : {
			tools: tools,
			view: view,
			event: event,
			data: data
		},
		getZTreeObj: function(treeId) {
			var o = data.getZTreeTools(treeId);
			return o ? o : null;
		},
		destroy: function(treeId) {
			if (!!treeId && treeId.length > 0) {
				view.destroy(data.getSetting(treeId));
			} else {
				for(var s in settings) {
					view.destroy(settings[s]);
				}
			}
		},
		init: function(obj, zSetting, zNodes) {
			var setting = tools.clone(_setting);
			$.extend(true, setting, zSetting);
			setting.treeId = obj.attr("id");
			setting.treeObj = obj;
			setting.treeObj.empty();
			settings[setting.treeId] = setting;
			//For some older browser,(e.g., ie6)
			if(typeof document.body.style.maxHeight === "undefined") {
				setting.view.expandSpeed = "";
			}
			data.initRoot(setting);
			var root = data.getRoot(setting),
			childKey = setting.data.key.children;
			zNodes = zNodes ? tools.clone(tools.isArray(zNodes)? zNodes : [zNodes]) : [];
			if (setting.data.simpleData.enable) {
				root[childKey] = data.transformTozTreeFormat(setting, zNodes);
			} else {
				root[childKey] = zNodes;
			}

			data.initCache(setting);
			event.unbindTree(setting);
			event.bindTree(setting);
			event.unbindEvent(setting);
			event.bindEvent(setting);

			var zTreeTools = {
				setting : setting,
				addNodes : function(parentNode, newNodes, isSilent) {
					if (!newNodes) return null;
					if (!parentNode) parentNode = null;
					if (parentNode && !parentNode.isParent && setting.data.keep.leaf) return null;
					var xNewNodes = tools.clone(tools.isArray(newNodes)? newNodes: [newNodes]);
					function addCallback() {
						view.addNodes(setting, parentNode, xNewNodes, (isSilent==true));
					}

					if (tools.canAsync(setting, parentNode)) {
						view.asyncNode(setting, parentNode, isSilent, addCallback);
					} else {
						addCallback();
					}
					return xNewNodes;
				},
				cancelSelectedNode : function(node) {
					view.cancelPreSelectedNode(setting, node);
				},
				destroy : function() {
					view.destroy(setting);
				},
				expandAll : function(expandFlag) {
					expandFlag = !!expandFlag;
					view.expandCollapseSonNode(setting, null, expandFlag, true);
					return expandFlag;
				},
				expandNode : function(node, expandFlag, sonSign, focus, callbackFlag) {
					if (!node || !node.isParent) return null;
					if (expandFlag !== true && expandFlag !== false) {
						expandFlag = !node.open;
					}
					callbackFlag = !!callbackFlag;

					if (callbackFlag && expandFlag && (tools.apply(setting.callback.beforeExpand, [setting.treeId, node], true) == false)) {
						return null;
					} else if (callbackFlag && !expandFlag && (tools.apply(setting.callback.beforeCollapse, [setting.treeId, node], true) == false)) {
						return null;
					}
					if (expandFlag && node.parentTId) {
						view.expandCollapseParentNode(setting, node.getParentNode(), expandFlag, false);
					}
					if (expandFlag === node.open && !sonSign) {
						return null;
					}

					data.getRoot(setting).expandTriggerFlag = callbackFlag;
					if (!tools.canAsync(setting, node) && sonSign) {
						view.expandCollapseSonNode(setting, node, expandFlag, true, function() {
							if (focus !== false) {try{$$(node, setting).focus().blur();}catch(e){}}
						});
					} else {
						node.open = !expandFlag;
						view.switchNode(this.setting, node);
						if (focus !== false) {try{$$(node, setting).focus().blur();}catch(e){}}
					}
					return expandFlag;
				},
				getNodes : function() {
					return data.getNodes(setting);
				},
				getNodeByParam : function(key, value, parentNode) {
					if (!key) return null;
					return data.getNodeByParam(setting, parentNode?parentNode[setting.data.key.children]:data.getNodes(setting), key, value);
				},
				getNodeByTId : function(tId) {
					return data.getNodeCache(setting, tId);
				},
				getNodesByParam : function(key, value, parentNode) {
					if (!key) return null;
					return data.getNodesByParam(setting, parentNode?parentNode[setting.data.key.children]:data.getNodes(setting), key, value);
				},
				getNodesByParamFuzzy : function(key, value, parentNode) {
					if (!key) return null;
					return data.getNodesByParamFuzzy(setting, parentNode?parentNode[setting.data.key.children]:data.getNodes(setting), key, value);
				},
				getNodesByFilter: function(filter, isSingle, parentNode, invokeParam) {
					isSingle = !!isSingle;
					if (!filter || (typeof filter != "function")) return (isSingle ? null : []);
					return data.getNodesByFilter(setting, parentNode?parentNode[setting.data.key.children]:data.getNodes(setting), filter, isSingle, invokeParam);
				},
				getNodeIndex : function(node) {
					if (!node) return null;
					var childKey = setting.data.key.children,
					parentNode = (node.parentTId) ? node.getParentNode() : data.getRoot(setting);
					for (var i=0, l = parentNode[childKey].length; i < l; i++) {
						if (parentNode[childKey][i] == node) return i;
					}
					return -1;
				},
				getSelectedNodes : function() {
					var r = [], list = data.getRoot(setting).curSelectedList;
					for (var i=0, l=list.length; i<l; i++) {
						r.push(list[i]);
					}
					return r;
				},
				isSelectedNode : function(node) {
					return data.isSelectedNode(setting, node);
				},
				reAsyncChildNodes : function(parentNode, reloadType, isSilent) {
					if (!this.setting.async.enable) return;
					var isRoot = !parentNode;
					if (isRoot) {
						parentNode = data.getRoot(setting);
					}
					if (reloadType=="refresh") {
						var childKey = this.setting.data.key.children;
						for (var i = 0, l = parentNode[childKey] ? parentNode[childKey].length : 0; i < l; i++) {
							data.removeNodeCache(setting, parentNode[childKey][i]);
						}
						data.removeSelectedNode(setting);
						parentNode[childKey] = [];
						if (isRoot) {
							this.setting.treeObj.empty();
						} else {
							var ulObj = $$(parentNode, consts.id.UL, setting);
							ulObj.empty();
						}
					}
					view.asyncNode(this.setting, isRoot? null:parentNode, !!isSilent);
				},
				refresh : function() {
					this.setting.treeObj.empty();
					var root = data.getRoot(setting),
					nodes = root[setting.data.key.children]
					data.initRoot(setting);
					root[setting.data.key.children] = nodes
					data.initCache(setting);
					view.createNodes(setting, 0, root[setting.data.key.children]);
				},
				removeChildNodes : function(node) {
					if (!node) return null;
					var childKey = setting.data.key.children,
					nodes = node[childKey];
					view.removeChildNodes(setting, node);
					return nodes ? nodes : null;
				},
				removeNode : function(node, callbackFlag) {
					if (!node) return;
					callbackFlag = !!callbackFlag;
					if (callbackFlag && tools.apply(setting.callback.beforeRemove, [setting.treeId, node], true) == false) return;
					view.removeNode(setting, node);
					if (callbackFlag) {
						this.setting.treeObj.trigger(consts.event.REMOVE, [setting.treeId, node]);
					}
				},
				selectNode : function(node, addFlag) {
					if (!node) return;
					if (tools.uCanDo(setting)) {
						addFlag = setting.view.selectedMulti && addFlag;
						if (node.parentTId) {
							view.expandCollapseParentNode(setting, node.getParentNode(), true, false, function() {
								try{$$(node, setting).focus().blur();}catch(e){}
							});
						} else {
							try{$$(node, setting).focus().blur();}catch(e){}
						}
						view.selectNode(setting, node, addFlag);
					}
				},
				transformTozTreeNodes : function(simpleNodes) {
					return data.transformTozTreeFormat(setting, simpleNodes);
				},
				transformToArray : function(nodes) {
					return data.transformToArrayFormat(setting, nodes);
				},
				updateNode : function(node, checkTypeFlag) {
					if (!node) return;
					var nObj = $$(node, setting);
					if (nObj.get(0) && tools.uCanDo(setting)) {
						view.setNodeName(setting, node);
						view.setNodeTarget(setting, node);
						view.setNodeUrl(setting, node);
						view.setNodeLineIcos(setting, node);
						view.setNodeFontCss(setting, node);
					}
				}
			}
			root.treeTools = zTreeTools;
			data.setZTreeTools(setting, zTreeTools);

			if (root[childKey] && root[childKey].length > 0) {
				view.createNodes(setting, 0, root[childKey]);
			} else if (setting.async.enable && setting.async.url && setting.async.url !== '') {
				view.asyncNode(setting);
			}
			return zTreeTools;
		}
	};

	var zt = $.fn.zTree,
	$$ = tools.$,
	consts = zt.consts;
})(jQuery);/*
 * JQuery zTree excheck v3.5.18
 * http://zTree.me/
 *
 * Copyright (c) 2010 Hunter.z
 *
 * Licensed same as jquery - MIT License
 * http://www.opensource.org/licenses/mit-license.php
 *
 * email: hunter.z@263.net
 * Date: 2015-06-18
 */
(function($){
	//default consts of excheck
	var _consts = {
		event: {
			CHECK: "ztree_check"
		},
		id: {
			CHECK: "_check"
		},
		checkbox: {
			STYLE: "checkbox",
			DEFAULT: "chk",
			DISABLED: "disable",
			FALSE: "false",
			TRUE: "true",
			FULL: "full",
			PART: "part",
			FOCUS: "focus"
		},
		radio: {
			STYLE: "radio",
			TYPE_ALL: "all",
			TYPE_LEVEL: "level"
		}
	},
	//default setting of excheck
	_setting = {
		check: {
			enable: false,
			autoCheckTrigger: false,
			chkStyle: _consts.checkbox.STYLE,
			nocheckInherit: false,
			chkDisabledInherit: false,
			radioType: _consts.radio.TYPE_LEVEL,
			chkboxType: {
				"Y": "ps",
				"N": "ps"
			}
		},
		data: {
			key: {
				checked: "checked"
			}
		},
		callback: {
			beforeCheck:null,
			onCheck:null
		}
	},
	//default root of excheck
	_initRoot = function (setting) {
		var r = data.getRoot(setting);
		r.radioCheckedList = [];
	},
	//default cache of excheck
	_initCache = function(treeId) {},
	//default bind event of excheck
	_bindEvent = function(setting) {
		var o = setting.treeObj,
		c = consts.event;
		o.bind(c.CHECK, function (event, srcEvent, treeId, node) {
			event.srcEvent = srcEvent;
			tools.apply(setting.callback.onCheck, [event, treeId, node]);
		});
	},
	_unbindEvent = function(setting) {
		var o = setting.treeObj,
		c = consts.event;
		o.unbind(c.CHECK);
	},
	//default event proxy of excheck
	_eventProxy = function(e) {
		var target = e.target,
		setting = data.getSetting(e.data.treeId),
		tId = "", node = null,
		nodeEventType = "", treeEventType = "",
		nodeEventCallback = null, treeEventCallback = null;

		if (tools.eqs(e.type, "mouseover")) {
			if (setting.check.enable && tools.eqs(target.tagName, "span") && target.getAttribute("treeNode"+ consts.id.CHECK) !== null) {
				tId = tools.getNodeMainDom(target).id;
				nodeEventType = "mouseoverCheck";
			}
		} else if (tools.eqs(e.type, "mouseout")) {
			if (setting.check.enable && tools.eqs(target.tagName, "span") && target.getAttribute("treeNode"+ consts.id.CHECK) !== null) {
				tId = tools.getNodeMainDom(target).id;
				nodeEventType = "mouseoutCheck";
			}
		} else if (tools.eqs(e.type, "click")) {
			if (setting.check.enable && tools.eqs(target.tagName, "span") && target.getAttribute("treeNode"+ consts.id.CHECK) !== null) {
				tId = tools.getNodeMainDom(target).id;
				nodeEventType = "checkNode";
			}
		}
		if (tId.length>0) {
			node = data.getNodeCache(setting, tId);
			switch (nodeEventType) {
				case "checkNode" :
					nodeEventCallback = _handler.onCheckNode;
					break;
				case "mouseoverCheck" :
					nodeEventCallback = _handler.onMouseoverCheck;
					break;
				case "mouseoutCheck" :
					nodeEventCallback = _handler.onMouseoutCheck;
					break;
			}
		}
		var proxyResult = {
			stop: nodeEventType === "checkNode",
			node: node,
			nodeEventType: nodeEventType,
			nodeEventCallback: nodeEventCallback,
			treeEventType: treeEventType,
			treeEventCallback: treeEventCallback
		};
		return proxyResult
	},
	//default init node of excheck
	_initNode = function(setting, level, n, parentNode, isFirstNode, isLastNode, openFlag) {
		if (!n) return;
		var checkedKey = setting.data.key.checked;
		if (typeof n[checkedKey] == "string") n[checkedKey] = tools.eqs(n[checkedKey], "true");
		n[checkedKey] = !!n[checkedKey];
		n.checkedOld = n[checkedKey];
		if (typeof n.nocheck == "string") n.nocheck = tools.eqs(n.nocheck, "true");
		n.nocheck = !!n.nocheck || (setting.check.nocheckInherit && parentNode && !!parentNode.nocheck);
		if (typeof n.chkDisabled == "string") n.chkDisabled = tools.eqs(n.chkDisabled, "true");
		n.chkDisabled = !!n.chkDisabled || (setting.check.chkDisabledInherit && parentNode && !!parentNode.chkDisabled);
		if (typeof n.halfCheck == "string") n.halfCheck = tools.eqs(n.halfCheck, "true");
		n.halfCheck = !!n.halfCheck;
		n.check_Child_State = -1;
		n.check_Focus = false;
		n.getCheckStatus = function() {return data.getCheckStatus(setting, n);};

		if (setting.check.chkStyle == consts.radio.STYLE && setting.check.radioType == consts.radio.TYPE_ALL && n[checkedKey] ) {
			var r = data.getRoot(setting);
			r.radioCheckedList.push(n);
		}
	},
	//add dom for check
	_beforeA = function(setting, node, html) {
		var checkedKey = setting.data.key.checked;
		if (setting.check.enable) {
			data.makeChkFlag(setting, node);
			html.push("<span ID='", node.tId, consts.id.CHECK, "' class='", view.makeChkClass(setting, node), "' treeNode", consts.id.CHECK, (node.nocheck === true?" style='display:none;'":""),"></span>");
		}
	},
	//update zTreeObj, add method of check
	_zTreeTools = function(setting, zTreeTools) {
		zTreeTools.checkNode = function(node, checked, checkTypeFlag, callbackFlag) {
			var checkedKey = this.setting.data.key.checked;
			if (node.chkDisabled === true) return;
			if (checked !== true && checked !== false) {
				checked = !node[checkedKey];
			}
			callbackFlag = !!callbackFlag;

			if (node[checkedKey] === checked && !checkTypeFlag) {
				return;
			} else if (callbackFlag && tools.apply(this.setting.callback.beforeCheck, [this.setting.treeId, node], true) == false) {
				return;
			}
			if (tools.uCanDo(this.setting) && this.setting.check.enable && node.nocheck !== true) {
				node[checkedKey] = checked;
				var checkObj = $$(node, consts.id.CHECK, this.setting);
				if (checkTypeFlag || this.setting.check.chkStyle === consts.radio.STYLE) view.checkNodeRelation(this.setting, node);
				view.setChkClass(this.setting, checkObj, node);
				view.repairParentChkClassWithSelf(this.setting, node);
				if (callbackFlag) {
					this.setting.treeObj.trigger(consts.event.CHECK, [null, this.setting.treeId, node]);
				}
			}
		}

		zTreeTools.checkAllNodes = function(checked) {
			view.repairAllChk(this.setting, !!checked);
		}

		zTreeTools.getCheckedNodes = function(checked) {
			var childKey = this.setting.data.key.children;
			checked = (checked !== false);
			return data.getTreeCheckedNodes(this.setting, data.getRoot(this.setting)[childKey], checked);
		}

		zTreeTools.getChangeCheckedNodes = function() {
			var childKey = this.setting.data.key.children;
			return data.getTreeChangeCheckedNodes(this.setting, data.getRoot(this.setting)[childKey]);
		}

		zTreeTools.setChkDisabled = function(node, disabled, inheritParent, inheritChildren) {
			disabled = !!disabled;
			inheritParent = !!inheritParent;
			inheritChildren = !!inheritChildren;
			view.repairSonChkDisabled(this.setting, node, disabled, inheritChildren);
			view.repairParentChkDisabled(this.setting, node.getParentNode(), disabled, inheritParent);
		}

		var _updateNode = zTreeTools.updateNode;
		zTreeTools.updateNode = function(node, checkTypeFlag) {
			if (_updateNode) _updateNode.apply(zTreeTools, arguments);
			if (!node || !this.setting.check.enable) return;
			var nObj = $$(node, this.setting);
			if (nObj.get(0) && tools.uCanDo(this.setting)) {
				var checkObj = $$(node, consts.id.CHECK, this.setting);
				if (checkTypeFlag == true || this.setting.check.chkStyle === consts.radio.STYLE) view.checkNodeRelation(this.setting, node);
				view.setChkClass(this.setting, checkObj, node);
				view.repairParentChkClassWithSelf(this.setting, node);
			}
		}
	},
	//method of operate data
	_data = {
		getRadioCheckedList: function(setting) {
			var checkedList = data.getRoot(setting).radioCheckedList;
			for (var i=0, j=checkedList.length; i<j; i++) {
				if(!data.getNodeCache(setting, checkedList[i].tId)) {
					checkedList.splice(i, 1);
					i--; j--;
				}
			}
			return checkedList;
		},
		getCheckStatus: function(setting, node) {
			if (!setting.check.enable || node.nocheck || node.chkDisabled) return null;
			var checkedKey = setting.data.key.checked,
			r = {
				checked: node[checkedKey],
				half: node.halfCheck ? node.halfCheck : (setting.check.chkStyle == consts.radio.STYLE ? (node.check_Child_State === 2) : (node[checkedKey] ? (node.check_Child_State > -1 && node.check_Child_State < 2) : (node.check_Child_State > 0)))
			};
			return r;
		},
		getTreeCheckedNodes: function(setting, nodes, checked, results) {
			if (!nodes) return [];
			var childKey = setting.data.key.children,
			checkedKey = setting.data.key.checked,
			onlyOne = (checked && setting.check.chkStyle == consts.radio.STYLE && setting.check.radioType == consts.radio.TYPE_ALL);
			results = !results ? [] : results;
			for (var i = 0, l = nodes.length; i < l; i++) {
				if (nodes[i].nocheck !== true && nodes[i].chkDisabled !== true && nodes[i][checkedKey] == checked) {
					results.push(nodes[i]);
					if(onlyOne) {
						break;
					}
				}
				data.getTreeCheckedNodes(setting, nodes[i][childKey], checked, results);
				if(onlyOne && results.length > 0) {
					break;
				}
			}
			return results;
		},
		getTreeChangeCheckedNodes: function(setting, nodes, results) {
			if (!nodes) return [];
			var childKey = setting.data.key.children,
			checkedKey = setting.data.key.checked;
			results = !results ? [] : results;
			for (var i = 0, l = nodes.length; i < l; i++) {
				if (nodes[i].nocheck !== true && nodes[i].chkDisabled !== true && nodes[i][checkedKey] != nodes[i].checkedOld) {
					results.push(nodes[i]);
				}
				data.getTreeChangeCheckedNodes(setting, nodes[i][childKey], results);
			}
			return results;
		},
		makeChkFlag: function(setting, node) {
			if (!node) return;
			var childKey = setting.data.key.children,
			checkedKey = setting.data.key.checked,
			chkFlag = -1;
			if (node[childKey]) {
				for (var i = 0, l = node[childKey].length; i < l; i++) {
					var cNode = node[childKey][i];
					var tmp = -1;
					if (setting.check.chkStyle == consts.radio.STYLE) {
						if (cNode.nocheck === true || cNode.chkDisabled === true) {
							tmp = cNode.check_Child_State;
						} else if (cNode.halfCheck === true) {
							tmp = 2;
						} else if (cNode[checkedKey]) {
							tmp = 2;
						} else {
							tmp = cNode.check_Child_State > 0 ? 2:0;
						}
						if (tmp == 2) {
							chkFlag = 2; break;
						} else if (tmp == 0){
							chkFlag = 0;
						}
					} else if (setting.check.chkStyle == consts.checkbox.STYLE) {
						if (cNode.nocheck === true || cNode.chkDisabled === true) {
							tmp = cNode.check_Child_State;
						} else if (cNode.halfCheck === true) {
							tmp = 1;
						} else if (cNode[checkedKey] ) {
							tmp = (cNode.check_Child_State === -1 || cNode.check_Child_State === 2) ? 2 : 1;
						} else {
							tmp = (cNode.check_Child_State > 0) ? 1 : 0;
						}
						if (tmp === 1) {
							chkFlag = 1; break;
						} else if (tmp === 2 && chkFlag > -1 && i > 0 && tmp !== chkFlag) {
							chkFlag = 1; break;
						} else if (chkFlag === 2 && tmp > -1 && tmp < 2) {
							chkFlag = 1; break;
						} else if (tmp > -1) {
							chkFlag = tmp;
						}
					}
				}
			}
			node.check_Child_State = chkFlag;
		}
	},
	//method of event proxy
	_event = {

	},
	//method of event handler
	_handler = {
		onCheckNode: function (event, node) {
			if (node.chkDisabled === true) return false;
			var setting = data.getSetting(event.data.treeId),
			checkedKey = setting.data.key.checked;
			if (tools.apply(setting.callback.beforeCheck, [setting.treeId, node], true) == false) return true;
			node[checkedKey] = !node[checkedKey];
			view.checkNodeRelation(setting, node);
			var checkObj = $$(node, consts.id.CHECK, setting);
			view.setChkClass(setting, checkObj, node);
			view.repairParentChkClassWithSelf(setting, node);
			setting.treeObj.trigger(consts.event.CHECK, [event, setting.treeId, node]);
			return true;
		},
		onMouseoverCheck: function(event, node) {
			if (node.chkDisabled === true) return false;
			var setting = data.getSetting(event.data.treeId),
			checkObj = $$(node, consts.id.CHECK, setting);
			node.check_Focus = true;
			view.setChkClass(setting, checkObj, node);
			return true;
		},
		onMouseoutCheck: function(event, node) {
			if (node.chkDisabled === true) return false;
			var setting = data.getSetting(event.data.treeId),
			checkObj = $$(node, consts.id.CHECK, setting);
			node.check_Focus = false;
			view.setChkClass(setting, checkObj, node);
			return true;
		}
	},
	//method of tools for zTree
	_tools = {

	},
	//method of operate ztree dom
	_view = {
		checkNodeRelation: function(setting, node) {
			var pNode, i, l,
			childKey = setting.data.key.children,
			checkedKey = setting.data.key.checked,
			r = consts.radio;
			if (setting.check.chkStyle == r.STYLE) {
				var checkedList = data.getRadioCheckedList(setting);
				if (node[checkedKey]) {
					if (setting.check.radioType == r.TYPE_ALL) {
						for (i = checkedList.length-1; i >= 0; i--) {
							pNode = checkedList[i];
							if (pNode[checkedKey] && pNode != node) {
								pNode[checkedKey] = false;
								checkedList.splice(i, 1);

								view.setChkClass(setting, $$(pNode, consts.id.CHECK, setting), pNode);
								if (pNode.parentTId != node.parentTId) {
									view.repairParentChkClassWithSelf(setting, pNode);
								}
							}
						}
						checkedList.push(node);
					} else {
						var parentNode = (node.parentTId) ? node.getParentNode() : data.getRoot(setting);
						for (i = 0, l = parentNode[childKey].length; i < l; i++) {
							pNode = parentNode[childKey][i];
							if (pNode[checkedKey] && pNode != node) {
								pNode[checkedKey] = false;
								view.setChkClass(setting, $$(pNode, consts.id.CHECK, setting), pNode);
							}
						}
					}
				} else if (setting.check.radioType == r.TYPE_ALL) {
					for (i = 0, l = checkedList.length; i < l; i++) {
						if (node == checkedList[i]) {
							checkedList.splice(i, 1);
							break;
						}
					}
				}

			} else {
				if (node[checkedKey] && (!node[childKey] || node[childKey].length==0 || setting.check.chkboxType.Y.indexOf("s") > -1)) {
					view.setSonNodeCheckBox(setting, node, true);
				}
				if (!node[checkedKey] && (!node[childKey] || node[childKey].length==0 || setting.check.chkboxType.N.indexOf("s") > -1)) {
					view.setSonNodeCheckBox(setting, node, false);
				}
				if (node[checkedKey] && setting.check.chkboxType.Y.indexOf("p") > -1) {
					view.setParentNodeCheckBox(setting, node, true);
				}
				if (!node[checkedKey] && setting.check.chkboxType.N.indexOf("p") > -1) {
					view.setParentNodeCheckBox(setting, node, false);
				}
			}
		},
		makeChkClass: function(setting, node) {
			var checkedKey = setting.data.key.checked,
			c = consts.checkbox, r = consts.radio,
			fullStyle = "";
			if (node.chkDisabled === true) {
				fullStyle = c.DISABLED;
			} else if (node.halfCheck) {
				fullStyle = c.PART;
			} else if (setting.check.chkStyle == r.STYLE) {
				fullStyle = (node.check_Child_State < 1)? c.FULL:c.PART;
			} else {
				fullStyle = node[checkedKey] ? ((node.check_Child_State === 2 || node.check_Child_State === -1) ? c.FULL:c.PART) : ((node.check_Child_State < 1)? c.FULL:c.PART);
			}
			var chkName = setting.check.chkStyle + "_" + (node[checkedKey] ? c.TRUE : c.FALSE) + "_" + fullStyle;
			chkName = (node.check_Focus && node.chkDisabled !== true) ? chkName + "_" + c.FOCUS : chkName;
			return consts.className.BUTTON + " " + c.DEFAULT + " " + chkName;
		},
		repairAllChk: function(setting, checked) {
			if (setting.check.enable && setting.check.chkStyle === consts.checkbox.STYLE) {
				var checkedKey = setting.data.key.checked,
				childKey = setting.data.key.children,
				root = data.getRoot(setting);
				for (var i = 0, l = root[childKey].length; i<l ; i++) {
					var node = root[childKey][i];
					if (node.nocheck !== true && node.chkDisabled !== true) {
						node[checkedKey] = checked;
					}
					view.setSonNodeCheckBox(setting, node, checked);
				}
			}
		},
		repairChkClass: function(setting, node) {
			if (!node) return;
			data.makeChkFlag(setting, node);
			if (node.nocheck !== true) {
				var checkObj = $$(node, consts.id.CHECK, setting);
				view.setChkClass(setting, checkObj, node);
			}
		},
		repairParentChkClass: function(setting, node) {
			if (!node || !node.parentTId) return;
			var pNode = node.getParentNode();
			view.repairChkClass(setting, pNode);
			view.repairParentChkClass(setting, pNode);
		},
		repairParentChkClassWithSelf: function(setting, node) {
			if (!node) return;
			var childKey = setting.data.key.children;
			if (node[childKey] && node[childKey].length > 0) {
				view.repairParentChkClass(setting, node[childKey][0]);
			} else {
				view.repairParentChkClass(setting, node);
			}
		},
		repairSonChkDisabled: function(setting, node, chkDisabled, inherit) {
			if (!node) return;
			var childKey = setting.data.key.children;
			if (node.chkDisabled != chkDisabled) {
				node.chkDisabled = chkDisabled;
			}
			view.repairChkClass(setting, node);
			if (node[childKey] && inherit) {
				for (var i = 0, l = node[childKey].length; i < l; i++) {
					var sNode = node[childKey][i];
					view.repairSonChkDisabled(setting, sNode, chkDisabled, inherit);
				}
			}
		},
		repairParentChkDisabled: function(setting, node, chkDisabled, inherit) {
			if (!node) return;
			if (node.chkDisabled != chkDisabled && inherit) {
				node.chkDisabled = chkDisabled;
			}
			view.repairChkClass(setting, node);
			view.repairParentChkDisabled(setting, node.getParentNode(), chkDisabled, inherit);
		},
		setChkClass: function(setting, obj, node) {
			if (!obj) return;
			if (node.nocheck === true) {
				obj.hide();
			} else {
				obj.show();
			}
            obj.attr('class', view.makeChkClass(setting, node));
		},
		setParentNodeCheckBox: function(setting, node, value, srcNode) {
			var childKey = setting.data.key.children,
			checkedKey = setting.data.key.checked,
			checkObj = $$(node, consts.id.CHECK, setting);
			if (!srcNode) srcNode = node;
			data.makeChkFlag(setting, node);
			if (node.nocheck !== true && node.chkDisabled !== true) {
				node[checkedKey] = value;
				view.setChkClass(setting, checkObj, node);
				if (setting.check.autoCheckTrigger && node != srcNode) {
					setting.treeObj.trigger(consts.event.CHECK, [null, setting.treeId, node]);
				}
			}
			if (node.parentTId) {
				var pSign = true;
				if (!value) {
					var pNodes = node.getParentNode()[childKey];
					for (var i = 0, l = pNodes.length; i < l; i++) {
						if ((pNodes[i].nocheck !== true && pNodes[i].chkDisabled !== true && pNodes[i][checkedKey])
						|| ((pNodes[i].nocheck === true || pNodes[i].chkDisabled === true) && pNodes[i].check_Child_State > 0)) {
							pSign = false;
							break;
						}
					}
				}
				if (pSign) {
					view.setParentNodeCheckBox(setting, node.getParentNode(), value, srcNode);
				}
			}
		},
		setSonNodeCheckBox: function(setting, node, value, srcNode) {
			if (!node) return;
			var childKey = setting.data.key.children,
			checkedKey = setting.data.key.checked,
			checkObj = $$(node, consts.id.CHECK, setting);
			if (!srcNode) srcNode = node;

			var hasDisable = false;
			if (node[childKey]) {
				for (var i = 0, l = node[childKey].length; i < l && node.chkDisabled !== true; i++) {
					var sNode = node[childKey][i];
					view.setSonNodeCheckBox(setting, sNode, value, srcNode);
					if (sNode.chkDisabled === true) hasDisable = true;
				}
			}

			if (node != data.getRoot(setting) && node.chkDisabled !== true) {
				if (hasDisable && node.nocheck !== true) {
					data.makeChkFlag(setting, node);
				}
				if (node.nocheck !== true && node.chkDisabled !== true) {
					node[checkedKey] = value;
					if (!hasDisable) node.check_Child_State = (node[childKey] && node[childKey].length > 0) ? (value ? 2 : 0) : -1;
				} else {
					node.check_Child_State = -1;
				}
				view.setChkClass(setting, checkObj, node);
				if (setting.check.autoCheckTrigger && node != srcNode && node.nocheck !== true && node.chkDisabled !== true) {
					setting.treeObj.trigger(consts.event.CHECK, [null, setting.treeId, node]);
				}
			}

		}
	},

	_z = {
		tools: _tools,
		view: _view,
		event: _event,
		data: _data
	};
	$.extend(true, $.fn.zTree.consts, _consts);
	$.extend(true, $.fn.zTree._z, _z);

	var zt = $.fn.zTree,
	tools = zt._z.tools,
	consts = zt.consts,
	view = zt._z.view,
	data = zt._z.data,
	event = zt._z.event,
	$$ = tools.$;

	data.exSetting(_setting);
	data.addInitBind(_bindEvent);
	data.addInitUnBind(_unbindEvent);
	data.addInitCache(_initCache);
	data.addInitNode(_initNode);
	data.addInitProxy(_eventProxy, true);
	data.addInitRoot(_initRoot);
	data.addBeforeA(_beforeA);
	data.addZTreeTools(_zTreeTools);

	var _createNodes = view.createNodes;
	view.createNodes = function(setting, level, nodes, parentNode) {
		if (_createNodes) _createNodes.apply(view, arguments);
		if (!nodes) return;
		view.repairParentChkClassWithSelf(setting, parentNode);
	}
	var _removeNode = view.removeNode;
	view.removeNode = function(setting, node) {
		var parentNode = node.getParentNode();
		if (_removeNode) _removeNode.apply(view, arguments);
		if (!node || !parentNode) return;
		view.repairChkClass(setting, parentNode);
		view.repairParentChkClass(setting, parentNode);
	}

	var _appendNodes = view.appendNodes;
	view.appendNodes = function(setting, level, nodes, parentNode, initFlag, openFlag) {
		var html = "";
		if (_appendNodes) {
			html = _appendNodes.apply(view, arguments);
		}
		if (parentNode) {
			data.makeChkFlag(setting, parentNode);
		}
		return html;
	}
})(jQuery);/**
 * 当没有元素时有提示信息的view
 *
 * Created by GUY on 2015/9/8.
 * @class BI.Pane
 * @extends BI.Widget
 * @abstract
 */
BI.Pane = BI.inherit(BI.Widget, {

    _defaultConfig: function () {
        return BI.extend(BI.Pane.superclass._defaultConfig.apply(this, arguments), {
            baseCls: "bi-pane",
            tipText: BI.i18nText("BI-No_Selected_Item"),
            overlap: true,
            onLoaded: BI.emptyFn
        })
    },

    _init: function () {
        BI.Pane.superclass._init.apply(this, arguments);
    },

    _assertTip: function () {
        var o = this.options;
        if (!this._tipText) {
            this._tipText = BI.createWidget({
                type: "bi.label",
                cls: "bi-tips",
                text: o.tipText,
                height: 25
            });
            BI.createWidget({
                type: "bi.vertical",
                element: this,
                items: [this._tipText],
                bgap: 25
            });
        }
    },

    loading: function () {
        var self = this, o = this.options;
        if (o.overlap === true) {
            if (!BI.Maskers.has(this.getName())) {
                BI.createWidget({
                    type: 'bi.vtape',
                    items: [{
                        el: {
                            type: "bi.layout",
                            cls: "loading-background"
                        },
                        height: 30
                    }],
                    element: BI.Maskers.make(this.getName(), this)
                });
            }
            BI.Maskers.show(self.getName());
        } else if (BI.isNull(this._loading)) {
            this._loading = BI.createWidget({
                type: "bi.layout",
                cls: "loading-background",
                height: 30
            });
            this._loading.element.css("zIndex", 1);
            BI.createWidget({
                type: "bi.absolute",
                element: this,
                items: [{
                    el: this._loading,
                    left: 0,
                    right: 0,
                    top: 0
                }]
            })
        }
    },

    loaded: function () {
        var self = this, o = this.options;
        BI.Maskers.remove(self.getName());
        this._loading && this._loading.destroy();
        this._loading && (this._loading = null);
        o.onLoaded();
        self.fireEvent(BI.Pane.EVENT_LOADED);
    },

    check: function () {
        this.setTipVisible(BI.isEmpty(this.options.items));
    },

    setTipVisible: function (b) {
        if (b === true) {
            this._assertTip();
            this._tipText.setVisible(true);
        } else {
            this._tipText && this._tipText.setVisible(false);
        }
    },

    populate: function (items) {
        this.options.items = items || [];
        this.check();
    },

    empty: function () {

    }
});
BI.Pane.EVENT_LOADED = "EVENT_LOADED";/**
 * guy
 * 这仅仅只是一个超类, 所有简单控件的基类
 * 1、类的控制，
 * 2、title的控制
 * 3、文字超过边界显示3个点
 * 4、cursor默认pointor
 * @class BI.Single
 * @extends BI.Widget
 * @abstract
 */
BI.Single = BI.inherit(BI.Widget, {
    _defaultConfig: function () {
        var conf = BI.Single.superclass._defaultConfig.apply(this, arguments);
        return BI.extend(conf, {
            baseCls: (conf.baseCls || "") + " bi-single",
            readonly: false,
            title: null,
            warningTitle: null,
            tipType: null, // success或warning
            value: null
        })
    },

    _showToolTip: function (e, opt) {
        opt || (opt = {});
        var self = this;
        var type = this.getTipType() || (this.isEnabled() ? "success" : "warning");
        var title = type === "success" ? this.getTitle() : (this.getWarningTitle() || this.getTitle());
        if (BI.isKey(title)) {
            BI.Tooltips.show(e, this.getName(), title, type, this, opt);
        }
    },

    _hideTooltip: function () {
        var self = this;
        var tooltip = BI.Tooltips.get(this.getName());
        if (BI.isNotNull(tooltip)) {
            tooltip.element.fadeOut(200, function () {
                BI.Tooltips.remove(self.getName());
            });
        }
    },

    _init: function () {
        BI.Single.superclass._init.apply(this, arguments);
        var self = this, o = this.options;
        if (BI.isKey(o.title) || BI.isKey(o.warningTitle)
            || BI.isFunction(o.title) || BI.isFunction(o.warningTitle)) {
            this.enableHover();
        }
    },

    enableHover: function (opt) {
        opt || (opt = {});
        var self = this;
        if (!this._hoverBinded) {
            this.element.on("mouseenter.title" + this.getName(), function (e) {
                self._e = e;
                if (self.getTipType() === "warning" || (BI.isKey(self.getWarningTitle()) && !self.isEnabled())) {
                    self.timeout = BI.delay(function () {
                        self._showToolTip(self._e || e, opt);
                    }, 200);
                } else if (self.getTipType() === "success" || self.isEnabled()) {
                    self.timeout = BI.delay(function () {
                        self._showToolTip(self._e || e, opt);
                    }, 500);
                }
            });
            this.element.on("mousemove.title" + this.getName(), function (e) {
                self._e = e;
                if (!self.element.__isMouseInBounds__(e)) {
                    if (BI.isNotNull(self.timeout)) {
                        clearTimeout(self.timeout);
                    }
                    self._hideTooltip();
                }
            });
            this.element.on("mouseleave.title" + this.getName(), function () {
                self._e = null;
                if (BI.isNotNull(self.timeout)) {
                    clearTimeout(self.timeout);
                }
                self._hideTooltip();
            });
            this._hoverBinded = true;
        }
    },

    disabledHover: function () {
        //取消hover事件
        if (BI.isNotNull(this.timeout)) {
            clearTimeout(this.timeout);
        }
        this._hideTooltip();
        $(this.element).unbind("mouseenter.title" + this.getName())
            .unbind("mousemove.title" + this.getName())
            .unbind("mouseleave.title" + this.getName());
        this._hoverBinded = false;
    },

    populate: function (items) {
        this.items = items || [];
    },

    //opt: {container: '', belowMouse: false}
    setTitle: function (title, opt) {
        this.options.title = title;
        if (BI.isKey(title)) {
            this.enableHover(opt);
        } else {
            this.disabledHover();
        }
    },

    setWarningTitle: function (title, opt) {
        this.options.warningTitle = title;
        if (BI.isKey(title)) {
            this.enableHover(opt);
        } else {
            this.disabledHover();
        }
    },

    getTipType: function () {
        return this.options.tipType;
    },

    isReadOnly: function () {
        return !!this.options.readonly;
    },

    getTitle: function () {
        var title = this.options.title;
        if(BI.isFunction(title)) {
            return title();
        }
        return title;
    },

    getWarningTitle: function () {
        var title = this.options.warningTitle;
        if(BI.isFunction(title)) {
            return title();
        }
        return title;
    },

    setValue: function (val) {
        if (!this.options.readonly) {
            this.options.value = val;
        }
    },

    getValue: function () {
        return this.options.value;
    }
});/**
 * guy 表示一行数据，通过position来定位位置的数据
 * @class BI.Text
 * @extends BI.Single
 */
BI.Text = BI.inherit(BI.Single, {
    _defaultConfig: function () {
        var conf = BI.Text.superclass._defaultConfig.apply(this, arguments);
        return BI.extend(conf, {
            baseCls: (conf.baseCls || "") + " bi-text",
            textAlign: "left",
            whiteSpace: "normal",
            lineHeight: null,
            hgap: 0,
            vgap: 0,
            lgap: 0,
            rgap: 0,
            tgap: 0,
            bgap: 0,
            text: "",
            py: ""
        })
    },

    _init: function () {
        BI.Text.superclass._init.apply(this, arguments);
        var o = this.options;
        this.text = BI.createWidget({
            type: "bi.layout",
            cls: "bi-text"
        });
        this.text.element.appendTo(this.element);
        if (BI.isKey(o.text)) {
            this.text.element.text(o.text);
        } else if (BI.isKey(o.value)) {
            this.text.element.text(o.value);
        }
        if (o.hgap + o.lgap > 0) {
            this.text.element.css({
                "margin-left": o.hgap + o.lgap + "px"
            })
        }
        if (o.hgap + o.rgap > 0) {
            this.text.element.css({
                "margin-right": o.hgap + o.rgap + "px"
            })
        }
        if (o.vgap + o.tgap > 0) {
            this.text.element.css({
                "margin-top": o.vgap + o.tgap + "px"
            })
        }
        if (o.vgap + o.bgap > 0) {
            this.text.element.css({
                "margin-bottom": o.vgap + o.bgap + "px"
            })
        }
        if (BI.isNumber(o.height)) {
            this.element.css({"lineHeight": o.height + "px"});
        }
        if (BI.isNumber(o.lineHeight)) {
            this.element.css({"lineHeight": o.lineHeight + "px"});
        }
        this.text.element.css({
            "textAlign": o.textAlign,
            "whiteSpace": o.whiteSpace
        });
        this.element.css({
            "textAlign": o.textAlign,
            "whiteSpace": o.whiteSpace
        });
        if (BI.isKey(o.keyword)) {
            this.text.element.__textKeywordMarked__(o.text, o.keyword, o.py);
        }
    },

    doRedMark: function (keyword) {
        var o = this.options;
        this.text.element.__textKeywordMarked__(o.text || o.value, keyword, o.py);
    },

    unRedMark: function () {
        var o = this.options;
        this.text.element.__textKeywordMarked__(o.text || o.value, "", o.py);
    },

    doHighLight: function () {
        this.text.element.addClass("bi-high-light");
    },

    unHighLight: function () {
        this.text.element.removeClass("bi-high-light");
    },

    setValue: function (text) {
        BI.Text.superclass.setValue.apply(this, arguments);
        if (!this.isReadOnly()) {
            this.text.element.text(text);
        }
    },

    setStyle: function (css) {
        this.text.element.css(css)
    },

    setText: function (text) {
        BI.Text.superclass.setText.apply(this, arguments);
        this.options.text = text;
        this.text.element.text(text);
    }
});

$.shortcut("bi.text", BI.Text);/**
 * guy
 * @class BI.BasicButton
 * @extends BI.Single
 *
 * 一般的button父级
 */
BI.BasicButton = BI.inherit(BI.Single, {
    _defaultConfig: function () {
        var conf = BI.BasicButton.superclass._defaultConfig.apply(this, arguments);
        return BI.extend(conf, {
            baseCls: (conf.baseCls || "") + " bi-basic-button" + (conf.invalid ? "" : " cursor-pointer"),
            value: "",
            text: "",
            stopEvent: false,
            stopPropagation: false,
            selected: false,
            once: false, //点击一次选中有效,再点无效
            forceSelected: false, //点击即选中， 选中了就不会被取消
            forceNotSelected: false, //无论怎么点击都不会被选中
            disableSelected: false, //使能选中

            shadow: false,
            isShadowShowingOnSelected: false,  //选中状态下是否显示阴影
            trigger: null,
            handler: BI.emptyFn
        })
    },
    _init: function () {
        BI.BasicButton.superclass._init.apply(this, arguments);
        var opts = this.options;
        if (opts.selected === true) {
            BI.nextTick(BI.bind(function () {
                this.setSelected(opts.selected);
            }, this));
        }
        BI.nextTick(BI.bind(this.bindEvent, this));

        if (opts.shadow) {
            this._createShadow();
        }
    },

    _createShadow: function () {
        var self = this, o = this.options;

        var assertMask = function () {
            if (!self.$mask) {
                self.$mask = BI.createWidget(BI.isObject(o.shadow) ? o.shadow : {}, {
                    type: "bi.layout",
                    cls: "bi-button-mask"
                });
                self.$mask.invisible();
                BI.createWidget({
                    type: "bi.absolute",
                    element: self,
                    items: [{
                        el: self.$mask,
                        left: 0,
                        right: 0,
                        top: 0,
                        bottom: 0
                    }]
                });
            }
        };

        this.element.mouseup(function () {
            if (!self._hover && !o.isShadowShowingOnSelected) {
                assertMask();
                self.$mask.invisible();
            }
        });
        this.element.on("mouseenter." + this.getName(), function (e) {
            if (self.element.__isMouseInBounds__(e)) {
                if (self.isEnabled() && !self._hover && (o.isShadowShowingOnSelected || !self.isSelected())) {
                    assertMask();
                    self.$mask.visible();
                }
            }
        });
        this.element.on("mousemove." + this.getName(), function (e) {
            if (!self.element.__isMouseInBounds__(e)) {
                if (self.isEnabled() && !self._hover) {
                    assertMask();
                    self.$mask.invisible();
                }
            }
        });
        this.element.on("mouseleave." + this.getName(), function () {
            if (self.isEnabled() && !self._hover) {
                assertMask();
                self.$mask.invisible();
            }
        });
    },

    bindEvent: function () {
        var self = this;
        var o = this.options, hand = this.handle();
        if (!hand) {
            return;
        }
        hand = hand.element;
        switch (o.trigger) {
            case "mouseup":
                var mouseDown = false;
                hand.mousedown(function () {
                    mouseDown = true;
                    ev(e);
                });
                hand.mouseup(function (e) {
                    if (mouseDown === true) {
                        clk(e);
                    }
                    mouseDown = false;
                    ev(e);
                });
                break;
            case "mousedown":
                var mouseDown = false;
                var selected = false;
                hand.mousedown(function (e) {
                    // if (e.button === 0) {
                    $(document).bind("mouseup." + self.getName(), function (e) {
                        // if (e.button === 0) {
                        if (BI.DOM.isExist(self) && !hand.__isMouseInBounds__(e) && mouseDown === true && !selected) {
                            self.setSelected(!self.isSelected());
                            self._trigger();
                        }
                        mouseDown = false;
                        $(document).unbind("mouseup." + self.getName());
                        // }
                    });
                    if (mouseDown === true) {
                        return;
                    }
                    if (self.isSelected()) {
                        selected = true;
                    } else {
                        clk(e);
                    }
                    mouseDown = true;
                    ev(e);
                    // }
                });
                hand.mouseup(function (e) {
                    // if (e.button === 0) {
                    if (BI.DOM.isExist(self) && mouseDown === true && selected === true) {
                        clk(e);
                    }
                    mouseDown = false;
                    selected = false;
                    $(document).unbind("mouseup." + self.getName());
                    // }
                });
                break;
            case "dblclick":
                hand.dblclick(clk);
                break;
            default:
                hand.mousedown(function (e) {
                    ev(e);
                });
                hand.mouseup(function (e) {
                    ev(e);
                });
                hand.click(clk);
                break;
        }
        //之后的300ms点击无效
        var onClick = BI.debounce(this.doClick, BI.EVENT_RESPONSE_TIME, true);

        function ev(e) {
            if (o.stopEvent) {
                e.stopEvent();
            }
            if (o.stopPropagation) {
                e.stopPropagation();
            }
        }

        function clk(e) {
            ev(e);
            if (!self.isEnabled() || (self.isOnce() && self.isSelected())) {
                return;
            }
            onClick.apply(self);
        }
    },

    _trigger: function () {
        var o = this.options;
        if (this.isValid()) {
            o.handler.call(this, this.getValue(), this);
            var v = this.getValue();
            this.fireEvent(BI.Controller.EVENT_CHANGE, BI.Events.CLICK, v, this);
            this.fireEvent(BI.BasicButton.EVENT_CHANGE, v, this);
        }
    },

    doClick: function () {
        if (!this.isDisableSelected()) {
            this.isForceSelected() ? this.setSelected(true) :
                (this.isForceNotSelected() ? this.setSelected(false) :
                    this.setSelected(!this.isSelected()));
        }
        this._trigger();
    },

    handle: function () {
        return this;
    },

    hover: function () {
        this._hover = true;
        this.handle().element.addClass("hover");
        if (this.options.shadow) {
            this.$mask && this.$mask.setVisible(true);
        }
    },

    dishover: function () {
        this._hover = false;
        this.handle().element.removeClass("hover");
        if (this.options.shadow) {
            this.$mask && this.$mask.setVisible(false);
        }
    },

    setSelected: function (b) {
        var o = this.options;
        o.selected = b;
        if (this.isSelected()) {
            this.handle().element.addClass("active");
        } else {
            this.handle().element.removeClass("active");
        }
        if (o.shadow && !o.isShadowShowingOnSelected) {
            this.$mask && this.$mask.setVisible(false);
        }
    },

    isSelected: function () {
        return this.options.selected;
    },

    isOnce: function () {
        return this.options.once;
    },

    isForceSelected: function () {
        return this.options.forceSelected;
    },

    isForceNotSelected: function () {
        return this.options.forceNotSelected;
    },

    isDisableSelected: function () {
        return this.options.disableSelected;
    },

    setText: function (text) {
        this.options.text = text;
    },

    getText: function () {
        return this.options.text;
    },

    setEnable: function (b) {
        BI.BasicButton.superclass.setEnable.apply(this, arguments);
        if (!b) {
            if (this.options.shadow) {
                this.$mask && this.$mask.setVisible(false);
            }
        }
    },

    empty: function () {
        $(document).unbind("mouseup." + this.getName());
        BI.BasicButton.superclass.empty.apply(this, arguments);
    },

    destroy: function () {
        BI.BasicButton.superclass.destroy.apply(this, arguments);
    }
});
BI.BasicButton.EVENT_CHANGE = "BasicButton.EVENT_CHANGE";/**
 * 表示一个可以展开的节点, 不仅有选中状态而且有展开状态
 *
 * Created by GUY on 2015/9/9.
 * @class BI.NodeButton
 * @extends BI.BasicButton
 * @abstract
 */
BI.NodeButton = BI.inherit(BI.BasicButton, {
    _defaultConfig: function() {
        var conf = BI.NodeButton.superclass._defaultConfig.apply(this, arguments);
        return BI.extend( conf, {
            baseCls: (conf.baseCls || "") + " bi-node",
            open: false
        })
    },

    _init:function() {
        BI.NodeButton.superclass._init.apply(this, arguments);
        var self = this;
        BI.nextTick(function(){
            self.setOpened(self.isOpened());
        })
    },

    doClick: function(){
        BI.NodeButton.superclass.doClick.apply(this, arguments);
        this.setOpened(!this.isOpened());
    },

    isOnce: function(){
        return false;
    },

    isOpened: function(){
        return !!this.options.open;
    },

    setOpened: function(b){
        this.options.open = !!b;
    },

    triggerCollapse: function(){
        if(this.isOpened()) {
            this.setOpened(false);
            this.fireEvent(BI.Controller.EVENT_CHANGE, BI.Events.COLLAPSE, this.getValue(), this);
        }
    },

    triggerExpand: function(){
        if(!this.isOpened()) {
            this.setOpened(true);
            this.fireEvent(BI.Controller.EVENT_CHANGE, BI.Events.EXPAND, this.getValue(), this);
        }
    }
});/**
 * Created by GUY on 2015/6/26.
 * @class BI.ButtonGroup
 * @extends BI.Widget
 */

BI.ButtonGroup = BI.inherit(BI.Widget, {
    _defaultConfig: function () {
        return BI.extend(BI.ButtonGroup.superclass._defaultConfig.apply(this, arguments), {
            baseCls: "bi-button-group",
            behaviors: {},
            items: [
                {
                    el: {type: "bi.text_button", text: "", value: ""}
                }
            ],
            chooseType: BI.Selection.Single,
            layouts: [{
                type: "bi.center",
                hgap: 0,
                vgap: 0
            }]
        })
    },

    _init: function () {
        BI.ButtonGroup.superclass._init.apply(this, arguments);
        var behaviors = {};
        BI.each(this.options.behaviors, function (key, rule) {
            behaviors[key] = BI.BehaviorFactory.createBehavior(key, {
                rule: rule
            })
        });
        this.behaviors = behaviors;
        this.populate(this.options.items);
    },

    _createBtns: function (items) {
        var o = this.options;
        return BI.createWidgets(BI.createItems(items, {
            type: "bi.text_button"
        }));
    },

    _btnsCreator: function (items) {
        var self = this, args = Array.prototype.slice.call(arguments), o = this.options;
        var buttons = this._createBtns(items);
        args[0] = buttons;

        BI.each(this.behaviors, function (i, behavior) {
            behavior.doBehavior.apply(behavior, args);
        });
        BI.each(buttons, function (i, btn) {
            btn.on(BI.Controller.EVENT_CHANGE, function (type, value, obj) {
                if (type === BI.Events.CLICK) {
                    switch (o.chooseType) {
                        case BI.ButtonGroup.CHOOSE_TYPE_SINGLE:
                            self.setValue(btn.getValue());
                            break;
                        case BI.ButtonGroup.CHOOSE_TYPE_NONE:
                            self.setValue([]);
                            break;
                    }
                    self.fireEvent(BI.ButtonGroup.EVENT_CHANGE, value, obj);
                }
                self.fireEvent(BI.Controller.EVENT_CHANGE, arguments);
            });
            btn.on(BI.Events.DESTROY, function () {
                BI.remove(self.buttons, btn);
            })
        });

        return buttons;
    },

    _packageBtns: function (btns) {
        var o = this.options;

        for (var i = o.layouts.length - 1; i > 0; i--) {
            btns = BI.map(btns, function (k, it) {
                return BI.extend({}, o.layouts[i], {
                    items: [
                        BI.extend({}, o.layouts[i].el, {
                            el: it
                        })
                    ]
                })
            })
        }
        return btns;
    },

    _packageItems: function (items, packBtns) {
        return BI.createItems(BI.makeArrayByArray(items, {}), BI.clone(packBtns));
    },

    _packageLayout: function (items) {
        var o = this.options, layout = BI.deepClone(o.layouts[0]);

        var lay = BI.formatEL(layout).el;
        while (lay && lay.items && !BI.isEmpty(lay.items)) {
            lay = BI.formatEL(lay.items[0]).el;
        }
        lay.items = items;
        return layout;
    },


    doBehavior: function () {
        var args = Array.prototype.slice.call(arguments);
        args.unshift(this.buttons);
        BI.each(this.behaviors, function (i, behavior) {
            behavior.doBehavior.apply(behavior, args);
        })
    },

    prependItems: function (items) {
        var o = this.options;
        var btns = this._btnsCreator.apply(this, arguments);
        this.buttons = BI.concat(btns, this.buttons);

        //如果是一个简单的layout
        if (o.layouts.length === 1 && !BI.isNotEmptyArray(o.layouts[0].items)
            && this.layouts && this.layouts.prependItems) {
            this.layouts.prependItems(btns);
            return;
        }

        var items = this._packageItems(items, this._packageBtns(btns));
        BI.createWidget(BI.extend(this._packageLayout(items))).element.children().prependTo(this.element);
    },

    addItems: function (items) {
        var o = this.options;
        var btns = this._btnsCreator.apply(this, arguments);
        this.buttons = BI.concat(this.buttons, btns);

        //如果是一个简单的layout
        if (o.layouts.length === 1 && !BI.isNotEmptyArray(o.layouts[0].items)
            && this.layouts && this.layouts.addItems) {
            this.layouts.addItems(btns);
            return;
        }

        var items = this._packageItems(items, this._packageBtns(btns));
        BI.createWidget(BI.extend(this._packageLayout(items))).element.children().appendTo(this.element);
    },

    removeItemAt: function (indexes) {
        var self = this;
        indexes = BI.isArray(indexes) ? indexes : [indexes];
        var buttons = [];
        BI.each(indexes, function (i, index) {
            buttons.push(self.buttons[index]);
        });
        BI.each(buttons, function (i, btn) {
            btn && btn.destroy();
        })
    },

    removeItems: function (v) {
        v = BI.isArray(v) ? v : [v];
        var indexes = [];
        BI.each(this.buttons, function (i, item) {
            if (BI.deepContains(v, item.getValue())) {
                indexes.push(i);
            }
        });
        this.removeItemAt(indexes);
    },

    populate: function (items) {
        this.options.items = items || [];
        this.empty();

        this.buttons = this._btnsCreator.apply(this, arguments);
        var items = this._packageItems(items, this._packageBtns(this.buttons));

        this.layouts = BI.createWidget(BI.extend({element: this}, this._packageLayout(items)));
    },

    setEnable: function (b) {
        BI.ButtonGroup.superclass.setEnable.apply(this, arguments);
        BI.each(this.buttons, function (i, item) {
            item.setEnable(b);
        });
    },

    setNotSelectedValue: function (v) {
        v = BI.isArray(v) ? v : [v];
        BI.each(this.buttons, function (i, item) {
            if (BI.deepContains(v, item.getValue())) {
                item.setSelected && item.setSelected(false);
            } else {
                item.setSelected && item.setSelected(true);
            }
        });
    },

    setEnabledValue: function (v) {
        v = BI.isArray(v) ? v : [v];
        BI.each(this.buttons, function (i, item) {
            if (BI.deepContains(v, item.getValue())) {
                item.setEnable(true);
            } else {
                item.setEnable(false);
            }
        });
    },

    setValue: function (v) {
        v = BI.isArray(v) ? v : [v];
        BI.each(this.buttons, function (i, item) {
            if (BI.deepContains(v, item.getValue())) {
                item.setSelected && item.setSelected(true);
            } else {
                item.setSelected && item.setSelected(false);
            }
        });
    },

    getNotSelectedValue: function () {
        var v = [];
        BI.each(this.buttons, function (i, item) {
            if (item.isEnabled() && !(item.isSelected && item.isSelected())) {
                v.push(item.getValue());
            }
        });
        return v;
    },

    getValue: function () {
        var v = [];
        BI.each(this.buttons, function (i, item) {
            if (item.isEnabled() && item.isSelected && item.isSelected()) {
                v.push(item.getValue());
            }
        });
        return v;
    },

    getAllButtons: function () {
        return this.buttons;
    },

    getAllLeaves: function () {
        return this.buttons;
    },

    getSelectedButtons: function () {
        var btns = [];
        BI.each(this.buttons, function (i, item) {
            if (item.isSelected && item.isSelected()) {
                btns.push(item);
            }
        });
        return btns;
    },

    getNotSelectedButtons: function () {
        var btns = [];
        BI.each(this.buttons, function (i, item) {
            if (item.isSelected && !item.isSelected()) {
                btns.push(item);
            }
        });
        return btns;
    },

    getIndexByValue: function (value) {
        var index = -1;
        BI.any(this.buttons, function (i, item) {
            if (item.isEnabled() && item.getValue() === value) {
                index = i;
                return true;
            }
        });
        return index;
    },

    getNodeById: function (id) {
        var node;
        BI.any(this.buttons, function (i, item) {
            if (item.isEnabled() && item.options.id === id) {
                node = item;
                return true;
            }
        });
        return node;
    },

    getNodeByValue: function (value) {
        var node;
        BI.any(this.buttons, function (i, item) {
            if (item.isEnabled() && item.getValue() === value) {
                node = item;
                return true;
            }
        });
        return node;
    },

    destroy: function () {
        BI.ButtonGroup.superclass.destroy.apply(this, arguments);
    }
});
BI.extend(BI.ButtonGroup, {
    CHOOSE_TYPE_SINGLE: BI.Selection.Single,
    CHOOSE_TYPE_MULTI: BI.Selection.Multi,
    CHOOSE_TYPE_ALL: BI.Selection.All,
    CHOOSE_TYPE_NONE: BI.Selection.None,
    CHOOSE_TYPE_DEFAULT: BI.Selection.Default
});
BI.ButtonGroup.EVENT_CHANGE = "EVENT_CHANGE";

$.shortcut("bi.button_group", BI.ButtonGroup);/**
 * Created by GUY on 2015/8/10.
 * @class BI.ButtonTree
 * @extends BI.ButtonGroup
 */

BI.ButtonTree = BI.inherit(BI.ButtonGroup, {
    _defaultConfig: function () {
        return BI.extend(BI.ButtonTree.superclass._defaultConfig.apply(this, arguments), {
            baseCls: "bi-button-tree"
        })
    },

    _init: function () {
        BI.ButtonTree.superclass._init.apply(this, arguments);
    },

    setNotSelectedValue: function (v) {
        v = BI.isArray(v) ? v : [v];
        BI.each(this.buttons, function (i, item) {
            if (!BI.isFunction(item.setSelected)) {
                item.setNotSelectedValue(v);
                return;
            }
            if (BI.deepContains(v, item.getValue())) {
                item.setSelected(false);
            } else {
                item.setSelected(true);
            }
        });
    },

    setEnabledValue: function (v) {
        v = BI.isArray(v) ? v : [v];
        BI.each(this.buttons, function (i, item) {
            if (BI.isFunction(item.setEnabledValue)) {
                item.setEnabledValue(v);
                return;
            }
            if (BI.deepContains(v, item.getValue())) {
                item.setEnable(true);
            } else {
                item.setEnable(false);
            }
        });
    },

    setValue: function (v) {
        v = BI.isArray(v) ? v : [v];
        BI.each(this.buttons, function (i, item) {
            if (!BI.isFunction(item.setSelected)) {
                item.setValue(v);
                return;
            }
            if (BI.deepContains(v, item.getValue())) {
                item.setSelected(true);
            } else {
                item.setSelected(false);
            }
        });
    },

    getNotSelectedValue: function () {
        var v = [];
        BI.each(this.buttons, function (i, item) {
            if (item.isEnabled() && !BI.isFunction(item.setSelected)) {
                v = BI.concat(v, item.getNotSelectedValue());
                return;
            }
            if (item.isEnabled() && item.isSelected && !item.isSelected()) {
                v.push(item.getValue());
            }
        });
        return v;
    },

    getValue: function () {
        var v = [];
        BI.each(this.buttons, function (i, item) {
            if (item.isEnabled() && !BI.isFunction(item.setSelected)) {
                v = BI.concat(v, item.getValue());
                return;
            }
            if (item.isEnabled() && item.isSelected && item.isSelected()) {
                v.push(item.getValue());
            }
        });
        return v;
    },

    getSelectedButtons: function () {
        var btns = [];
        BI.each(this.buttons, function (i, item) {
            if (item.isEnabled() && !BI.isFunction(item.setSelected)) {
                btns = btns.concat(item.getSelectedButtons());
                return;
            }
            if (item.isSelected && item.isSelected()) {
                btns.push(item);
            }
        });
        return btns;
    },

    getNotSelectedButtons: function () {
        var btns = [];
        BI.each(this.buttons, function (i, item) {
            if (item.isEnabled() && !BI.isFunction(item.setSelected)) {
                btns = btns.concat(item.getNotSelectedButtons());
                return;
            }
            if (item.isSelected && !item.isSelected()) {
                btns.push(item);
            }
        });
        return btns;
    },

    //获取所有的叶子节点
    getAllLeaves: function () {
        var leaves = [];
        BI.each(this.buttons, function (i, item) {
            if (item.isEnabled() && !BI.isFunction(item.setSelected)) {
                leaves = leaves.concat(item.getAllLeaves());
                return;
            }
            if (item.isEnabled()) {
                leaves.push(item);
            }
        });
        return leaves;
    },

    getIndexByValue: function (value) {
        var index = -1;
        BI.any(this.buttons, function (i, item) {
            var vs = item.getValue();
            if (item.isEnabled() && (vs === value || BI.contains(vs, value))) {
                index = i;
                return true;
            }
        });
        return index;
    },

    getNodeById: function (id) {
        var node;
        BI.any(this.buttons, function (i, item) {
            if (item.isEnabled()) {
                if (item.attr("id") === id) {
                    node = item;
                    return true;
                } else if (BI.isFunction(item.getNodeById)) {
                    if (node = item.getNodeById(id)) {
                        return true;
                    }
                }
            }
        });
        return node;
    },

    getNodeByValue: function (value) {
        var node;
        BI.any(this.buttons, function (i, item) {
            if (item.isEnabled()) {
                if (item.getValue() === value) {
                    node = item;
                    return true;
                } else if (BI.isFunction(item.getNodeByValue)) {
                    if (node = item.getNodeByValue(value)) {
                        return true;
                    }
                }
            }
        });
        return node;
    }
});
BI.ButtonTree.EVENT_CHANGE = "EVENT_CHANGE";

$.shortcut("bi.button_tree", BI.ButtonTree);/**
 * value作为key值缓存button，  不支持顺序读写
 * 适合用于频繁增删的一组button
 * Created by GUY on 2015/8/10.
 * @class BI.ButtonMap
 * @extends BI.ButtonTree
 */

BI.ButtonMap = BI.inherit(BI.ButtonTree, {
    _defaultConfig: function () {
        return BI.extend(BI.ButtonMap.superclass._defaultConfig.apply(this, arguments), {
            baseCls: "bi-button-map"
        })
    },

    _init: function () {
        BI.ButtonMap.superclass._init.apply(this, arguments);
    },

    _createBtns: function (items) {
        var self = this, o = this.options;
        var buttons = BI.createWidgets(BI.createItems(items, {type: "bi.text_button", once: o.chooseType === 0}));
        var keys = BI.map(items, function (i, item) {
            item = BI.stripEL(item);
            if (!(item.id || item.value)) {
                throw new Error("item必须包含id或value属性");
            }
            return item.id || item.value;
        });
        return BI.object(keys, buttons);
    },

    setValue: function (v) {
        var self = this;
        v = BI.isArray(v) ? v : [v];
        BI.each(this.buttons, function (val, item) {
            if (!BI.isFunction(item.setSelected)) {
                item.setValue(v);
                return;
            }
            if (v.contains(val)) {
                item.setSelected && item.setSelected(true);
            } else {
                item.setSelected && item.setSelected(false);
            }
        });
    },

    setNotSelectedValue: function (v) {
        var self = this;
        v = BI.isArray(v) ? v : [v];
        BI.each(this.buttons, function (val, item) {
            if (!BI.isFunction(item.setSelected)) {
                item.setNotSelectedValue(v);
                return;
            }
            if (v.contains(val)) {
                item.setSelected && item.setSelected(false);
            } else {
                item.setSelected && item.setSelected(true);
            }
        });
    },

    populate: function (items) {
        var self = this;
        var args = [].slice.call(arguments);
        var linkHashMap = new BI.LinkHashMap();
        var val = function (item) {
            return item.id || item.value;
        };
        if (!this.buttons) {
            this.buttons = {};
        }
        //所有已存在的和新添加的
        var willCreated = [];
        BI.each(items, function (i, item) {
            item = BI.stripEL(item);
            if (self.buttons[val(item)]) {
                var ob = self.buttons[val(item)];
                args[0] = item.items;
                args[2] = item;
                ob.populate && ob.populate.apply(ob, args);
            } else {
                willCreated.push(item);
            }
        });
        //创建新元素
        args[0] = willCreated;
        var newBtns = this._btnsCreator.apply(this, args);

        //整理
        var array = [];
        BI.each(items, function (i, item) {
            item = BI.stripEL(item);
            var button = self.buttons[val(item)] || newBtns[val(item)];
            linkHashMap.add(val(item), button);
            array.push(button);
        });
        this.buttons = linkHashMap.map;

        BI.DOM.hang(this.buttons);
        this.empty();

        var packages = this._packageItems(items, this._packageBtns(array));
        BI.createWidget(BI.extend({element: this}, this._packageLayout(packages)));
    },

    getIndexByValue: function (value) {
        throw new Error("不能使用getIndexByValue方法");
    }
});
BI.ButtonMap.EVENT_CHANGE = "EVENT_CHANGE";

$.shortcut("bi.button_map", BI.ButtonMap);/**
 * guy
 * 异步树
 * @class BI.TreeView
 * @extends BI.Pane
 */
BI.TreeView = BI.inherit(BI.Pane, {
    _defaultConfig: function () {
        return BI.extend(BI.TreeView.superclass._defaultConfig.apply(this, arguments), {
            baseCls: "bi-tree",
            paras: {},
            itemsCreator: BI.emptyFn
        })
    },
    _init: function () {
        BI.TreeView.superclass._init.apply(this, arguments);
        
        
        

        this._stop = false;
        this.container = BI.createWidget();

        this._createTree();
        this.tip = BI.createWidget({
            type: "bi.loading_bar",
            invisible: true,
            handler: BI.bind(this._loadMore, this)
        });
        BI.createWidget({
            type: "bi.vertical",
            scrollable: true,
            scrolly: false,
            element: this,
            items: [this.container, this.tip]
        });

    },

    _createTree: function () {
        this.id = "bi-tree" + BI.UUID();
        if (this.nodes) {
            this.nodes.destroy();
        }
        if (this.tree) {
            this.tree.destroy();
        }
        this.tree = BI.createWidget({
            type: "bi.layout",
            element: "<ul id='" + this.id + "' class='ztree'></ul>"
        });
        BI.createWidget({
            type: "bi.default",
            element: this.container,
            items: [this.tree]
        });
    },

    //选择节点触发方法
    _selectTreeNode: function (treeId, treeNode) {
        this.fireEvent(BI.Controller.EVENT_CHANGE, BI.Events.CLICK, treeNode, this);
        this.fireEvent(BI.TreeView.EVENT_CHANGE, treeNode, this);
    },

    //配置属性
    _configSetting: function () {
        var paras = this.options.paras;
        var self = this;
        var setting = {
            async: {
                enable: true,
                url: getUrl,
                autoParam: ["id", "name"],
                otherParam: BI.cjkEncodeDO(paras)
            },
            check: {
                enable: true
            },
            data: {
                key: {
                    title: "title",
                    name: "text"
                },
                simpleData: {
                    enable: true
                }
            },
            view: {
                showIcon: false,
                expandSpeed: "",
                nameIsHTML: true,
                dblClickExpand: false
            },
            callback: {
                beforeExpand: beforeExpand,
                onAsyncSuccess: onAsyncSuccess,
                onAsyncError: onAsyncError,
                beforeCheck: beforeCheck,
                onCheck: onCheck,
                onExpand: onExpand,
                onCollapse: onCollapse,
                onClick: onClick
            }
        };
        var className = "dark", perTime = 100;

        function onClick(event, treeId, treeNode) {
            self.nodes.checkNode(treeNode, !treeNode.checked, true, true);
        }

        function getUrl(treeId, treeNode) {
            var parentNode = self._getParentValues(treeNode);
            treeNode.times = treeNode.times || 1;
            var param = "id=" + treeNode.id
                + "&times=" + (treeNode.times++)
                + "&parent_values= " + window.encodeURIComponent(BI.jsonEncode(parentNode))
                + "&check_state=" + window.encodeURIComponent(BI.jsonEncode(treeNode.getCheckStatus()));

            return BI.servletURL + '?op=' + self.options.op + '&cmd=' + self.options.cmd + "&" + param;
        }

        function beforeExpand(treeId, treeNode) {
            if (!treeNode.isAjaxing) {
                if (!treeNode.children) {
                    treeNode.times = 1;
                    ajaxGetNodes(treeNode, "refresh");
                }
                return true;
            } else {
                BI.Msg.toast("Please Wait。", "warning");
                return false;
            }
        }

        function onAsyncSuccess(event, treeId, treeNode, msg) {
            treeNode.halfCheck = false;
            if (!msg || msg.length === 0 || /^<html>[\s,\S]*<\/html>$/gi.test(msg) || self._stop) {
                return;
            }
            var zTree = self.nodes;
            var totalCount = treeNode.count || 0;

            //尝试去获取下一组节点，若获取值为空数组，表示获取完成
            // TODO by GUY
            if (treeNode.children.length > totalCount) {
                treeNode.count = treeNode.children.length;
                BI.delay(function () {
                    ajaxGetNodes(treeNode);
                }, perTime);
            } else {
                //treeNode.icon = "";
                zTree.updateNode(treeNode);
                zTree.selectNode(treeNode.children[0]);
                //className = (className === "dark" ? "":"dark");
            }
        }

        function onAsyncError(event, treeId, treeNode, XMLHttpRequest, textStatus, errorThrown) {
            var zTree = self.nodes;
            BI.Msg.toast("Error!", "warning");
            //treeNode.icon = "";
            //zTree.updateNode(treeNode);
        }

        function ajaxGetNodes(treeNode, reloadType) {
            var zTree = self.nodes;
            if (reloadType == "refresh") {
                //treeNode.icon = BI.servletURL +"?op=resource&resource=/com/fr/bi/web/css/base/third/ztree/img/loading.gif";
                zTree.updateNode(treeNode);
            }
            zTree.reAsyncChildNodes(treeNode, reloadType, true);
        }

        function beforeCheck(treeId, treeNode) {
            treeNode.halfCheck = false;
            if (treeNode.checked === true) {
                //将展开的节点halfCheck设为false，解决展开节点存在halfCheck=true的情况 guy
                //所有的半选状态都需要取消halfCheck=true的情况
                function track(children) {
                    BI.each(children, function (i, ch) {
                        if (ch.halfCheck === true) {
                            ch.halfCheck = false;
                            track(ch.children);
                        }
                    })
                }

                track(treeNode.children);
                var treeObj = self.nodes;
                var nodes = treeObj.getSelectedNodes();
                $.each(nodes, function (index, node) {
                    node.halfCheck = false;
                })
            }
        }

        function onCheck(event, treeId, treeNode) {
            self._selectTreeNode(treeId, treeNode);
        }

        function onExpand(event, treeId, treeNode) {
            treeNode.halfCheck = false;
        }

        function onCollapse(event, treeId, treeNode) {
        }

        return setting;
    },

    _getParentValues: function (treeNode) {
        if (!treeNode.getParentNode()) {
            return [];
        }
        var parentNode = treeNode.getParentNode();
        var result = this._getParentValues(parentNode);
        result = result.concat([this._getNodeValue(parentNode)]);
        return result;
    },

    _getNodeValue: function (node) {
        //去除标红
        return node.value || node.text.replace(/<[^>]+>/g, "");
    },

    //获取半选框值
    _getHalfSelectedValues: function (map, node) {
        var self = this;
        var checkState = node.getCheckStatus();
        //将未选的去掉
        if (checkState.checked === false && checkState.half === false) {
            return;
        }
        //如果节点已展开,并且是半选
        if (BI.isNotEmptyArray(node.children) && checkState.half === true) {
            var children = node.children;
            BI.each(children, function (i, ch) {
                self._getHalfSelectedValues(map, ch);
            });
            return;
        }
        var parent = node.parentValues || self._getParentValues(node);
        var path = parent.concat(this._getNodeValue(node));
        if (BI.isNotEmptyArray(node.children) || checkState.half === false) {
            this._buildTree(map, path);
            return;
        }
        var storeValues = BI.deepClone(this.options.paras.selected_values);
        var treeNode = this._getTree(storeValues, path);
        this._addTreeNode(map, parent, this._getNodeValue(node), treeNode);
    },

    _getTree: function (map, values) {
        var cur = map;
        BI.any(values, function (i, value) {
            if (cur[value] == null) {
                return true;
            }
            cur = cur[value];
        });
        return cur;
    },

    _addTreeNode: function (map, values, key, value) {
        var cur = map;
        BI.each(values, function (i, value) {
            if (cur[value] == null) {
                cur[value] = {};
            }
            cur = cur[value];
        });
        cur[key] = value;
    },

    //构造树节点
    _buildTree: function (map, values) {
        var cur = map;
        BI.each(values, function (i, value) {
            if (cur[value] == null) {
                cur[value] = {};
            }
            cur = cur[value];
        })
    },

    //获取选中的值
    _getSelectedValues: function () {
        var self = this;
        var hashMap = {};
        var rootNoots = this.nodes.getNodes();
        track(rootNoots);
        function track(nodes) {
            BI.each(nodes, function (i, node) {
                var checkState = node.getCheckStatus();
                if (checkState.checked === true || checkState.half === true) {
                    if (checkState.half === true) {
                        self._getHalfSelectedValues(hashMap, node);
                    } else {
                        var parentValues = node.parentValues || self._getParentValues(node);
                        var values = parentValues.concat([self._getNodeValue(node)]);
                        self._buildTree(hashMap, values);
                    }
                }
            })
        }

        return hashMap;
    },

    //处理节点
    _dealWidthNodes: function (nodes) {
        var self = this, o = this.options;
        //处理标红
        if (BI.isKey(o.paras.keyword)) {
            var keyword = o.paras.keyword;
            var ns = BI.Tree.arrayFormat(nodes);
            BI.each(ns, function (i, n) {
                n.text = $("<div>").__textKeywordMarked__(n.text, keyword, n.py).html();
            });
        }
        return nodes;
    },

    _loadMore: function () {
        var self = this, o = this.options;
        this.tip.setLoading();
        var op = BI.extend({}, o.paras, {
            times: ++this.times
        });
        o.itemsCreator(op, function (res) {
            if (self._stop === true) {
                return;
            }
            var hasNext = !!res.hasNext, nodes = res.items || [];

            if (!hasNext) {
                self.tip.setEnd();
            } else {
                self.tip.setLoaded();
            }
            if (nodes.length > 0) {
                self.nodes.addNodes(null, self._dealWidthNodes(nodes));
            }
        });
    },

    //生成树内部方法
    _initTree: function (setting) {
        var self = this, o = this.options;
        self.fireEvent(BI.Events.INIT);
        this.times = 1;
        var tree = this.tree;
        tree.empty();
        this.loading();
        this.tip.setVisible(false);
        var callback = function (nodes) {
            if (self._stop === true) {
                return;
            }
            self.nodes = $.fn.zTree.init(tree.element, setting, nodes);
        };
        var op = BI.extend({}, o.paras, {
            times: 1,
            type: BICst.TREE.TREE_REQ_TYPE.INIT_DATA
        });

        o.itemsCreator(op, function (res) {
            if (self._stop === true) {
                return;
            }
            var hasNext = !!res.hasNext, nodes = res.items || [];
            if (nodes.length > 0) {
                callback(self._dealWidthNodes(nodes));
            }
            self.setTipVisible(nodes.length <= 0);
            self.loaded();
            if (!hasNext) {
                self.tip.invisible();
            } else {
                self.tip.setLoaded();
            }
            op.times === 1 && self.fireEvent(BI.Events.AFTERINIT);
        });
    },

    //构造树结构，
    initTree: function (nodes, setting) {
        var setting = setting || {
                async: {
                    enable: false
                },
                check: {
                    enable: false
                },
                data: {
                    key: {
                        title: "title",
                        name: "text"
                    },
                    simpleData: {
                        enable: true
                    }
                },
                view: {
                    showIcon: false,
                    expandSpeed: ""
                },
                callback: {}
            };
        this.nodes = $.fn.zTree.init(this.tree.element, setting, nodes);
    },

    start: function () {
        this._stop = false;
    },

    stop: function () {
        this._stop = true;
    },

    //生成树方法
    stroke: function (config) {
        delete this.options.keyword;
        BI.extend(this.options.paras, config);
        var setting = this._configSetting();
        this._createTree();
        this.start();
        this._initTree(setting);
    },

    populate: function () {
        this.stroke.apply(this, arguments);
    },

    hasChecked: function () {
        var treeObj = this.nodes;
        return treeObj.getCheckedNodes(true).length > 0;
    },

    checkAll: function (checked) {
        this.nodes && this.nodes.checkAllNodes(checked);
    },

    expandAll: function (flag) {
        this.nodes && this.nodes.expandAll(flag);
    },

    setValue: function (value, param) {
        this.setSelectedValue(value);
        this.checkAll(false);
        this.updateValue(value, param);
        this.refresh();
    },

    setSelectedValue: function (value) {
        this.options.paras.selected_values = value || {};
        this.selected_values = BI.deepClone(value) || {};
    },

    updateValue: function (values, param) {
        if (!this.nodes) {
            return;
        }
        param || (param = "value");
        var treeObj = this.nodes;
        BI.each(values, function (v, op) {
            var nodes = treeObj.getNodesByParam(param, v, null);
            BI.each(nodes, function (j, node) {
                BI.extend(node, {checked: true}, op);
                treeObj.updateNode(node);
            })
        });
    },

    refresh: function () {
        this.nodes && this.nodes.refresh();
    },

    getValue: function () {
        if (!this.nodes) {
            return null;
        }
        return this._getSelectedValues();
    },

    empty: function () {
        BI.isNotNull(this.nodes) && this.nodes.destroy();
    },

    destroy: function () {
        this.stop();
        this.nodes && this.nodes.destroy();
        BI.TreeView.superclass.destroy.apply(this, arguments);
    }
});
BI.extend(BI.TreeView, {
    REQ_TYPE_INIT_DATA: 1,
    REQ_TYPE_ADJUST_DATA: 2,
    REQ_TYPE_CALCULATE_SELECT_DATA: 3,
    REQ_TYPE_SELECTED_DATA: 4
});

BI.TreeView.EVENT_CHANGE = "EVENT_CHANGE";
BI.TreeView.EVENT_INIT = BI.Events.INIT;
BI.TreeView.EVENT_AFTERINIT = BI.Events.AFTERINIT;

$.shortcut("bi.tree", BI.TreeView);/**
 * guy
 * 同步树
 * @class BI.SyncTree
 * @extends BI.TreeView
 */
BI.SyncTree = BI.inherit(BI.TreeView, {
    _defaultConfig: function () {
        return BI.extend(BI.SyncTree.superclass._defaultConfig.apply(this, arguments), {})
    },
    _init: function () {
        BI.SyncTree.superclass._init.apply(this, arguments);
    },

    //配置属性
    _configSetting: function () {
        var paras = this.options.paras;
        var self = this;
        var setting = {
            async: {
                enable: false,
                otherParam: BI.cjkEncodeDO(paras)
            },
            check: {
                enable: true
            },
            data: {
                key: {
                    title: "title",
                    name: "text"
                },
                simpleData: {
                    enable: true
                }
            },
            view: {
                showIcon: false,
                expandSpeed: "",
                nameIsHTML: true,
                dblClickExpand: false
            },
            callback: {
                beforeCheck: beforeCheck,
                onCheck: onCheck,
                beforeExpand: beforeExpand,
                onExpand: onExpand,
                onCollapse: onCollapse,
                onClick: onClick
            }
        };

        function onClick(event, treeId, treeNode) {
            var zTree = $.fn.zTree.getZTreeObj(treeId);
            zTree.checkNode(treeNode, !treeNode.checked, true, true);
        }

        function beforeCheck(treeId, treeNode) {
            treeNode.halfCheck = false;
            if (treeNode.checked === true) {
                //将展开的节点halfCheck设为false，解决展开节点存在halfCheck=true的情况 guy
                //所有的半选状态都需要取消halfCheck=true的情况
                function track(children) {
                    BI.each(children, function (i, ch) {
                        if (ch.halfCheck === true) {
                            ch.halfCheck = false;
                            track(ch.children);
                        }
                    })
                }

                track(treeNode.children);

                var treeObj = $.fn.zTree.getZTreeObj(treeId);
                var nodes = treeObj.getSelectedNodes();
                BI.each(nodes, function (index, node) {
                    node.halfCheck = false;
                })
            }
        }

        function beforeExpand(treeId, treeNode) {
            self._expandNode(treeId, treeNode);
        }

        function onCheck(event, treeId, treeNode) {
            self._selectTreeNode(treeId, treeNode);
        }

        function onExpand(event, treeId, treeNode) {
            treeNode.halfCheck = false;
        }

        function onCollapse(event, treeId, treeNode) {
            treeNode.halfCheck = false;
        }

        return setting;
    },

    _selectTreeNode: function (treeId, treeNode) {
        var self = this, o = this.options;
        var parent_values = BI.deepClone(treeNode.parentValues || self._getParentValues(treeNode));
        var name = this._getNodeValue(treeNode)
//        var values = parent_values.concat([name]);
        if (treeNode.checked === true) {
        } else {
            var tNode = treeNode;
            var pNode = this._getTree(this.selected_values, parent_values);
            if (BI.isNotNull(pNode[name])) {
                delete pNode[name];
            }
            while (tNode != null && BI.isEmpty(pNode)) {
                parent_values = parent_values.slice(0, parent_values.length - 1);
                tNode = tNode.getParentNode();
                if (tNode != null) {
                    pNode = this._getTree(this.selected_values, parent_values);
                    name = this._getNodeValue(tNode);
                    delete pNode[name];
                }
            }
        }
        BI.SyncTree.superclass._selectTreeNode.apply(self, arguments);
    },

    //展开节点
    _expandNode: function (treeId, treeNode) {
        var self = this, o = this.options;
        var parentValues = treeNode.parentValues || self._getParentValues(treeNode);
        var op = BI.extend({}, o.paras, {
            "id": treeNode.id,
            "times": 1,
            "parent_values": parentValues.concat(this._getNodeValue(treeNode)),
            "check_state": treeNode.getCheckStatus()
        });
        var complete = function (d) {
            var nodes = d.items || [];
            if (nodes.length > 0) {
                callback(self._dealWidthNodes(nodes), !!d.hasNext);
            }
        };
        var times = 1;

        function callback(nodes, hasNext) {
            self.nodes.addNodes(treeNode, nodes);

            if (hasNext === true) {
                BI.delay(function () {
                    times++;
                    op.times = times;
                    o.itemsCreator(op, complete);
                }, 100);
            }
        }

        if (!treeNode.children) {
            o.itemsCreator(op, complete)
        }
    },

    _join: function (valueA, valueB) {
        var self = this;
        var map = {};
        track([], valueA, valueB);
        track([], valueB, valueA);
        function track(parent, node, compare) {
            BI.each(node, function (n, item) {
                if (BI.isNull(compare[n])) {
                    self._addTreeNode(map, parent, n, item);
                } else if (BI.isEmpty(compare[n])) {
                    self._addTreeNode(map, parent, n, {});
                } else {
                    track(parent.concat([n]), node[n], compare[n]);
                }
            })
        }

        return map;
    },

    hasChecked: function () {
        return !BI.isEmpty(this.selected_values) || BI.SyncTree.superclass.hasChecked.apply(this, arguments);
    },

    getValue: function () {
        if (!this.nodes) {
            return {};
        }
        var checkedValues = this._getSelectedValues();
        if (BI.isEmpty(checkedValues)) {
            return this.selected_values;
        }
        if (BI.isEmpty(this.selected_values)) {
            return checkedValues;
        }
        return this._join(checkedValues, this.selected_values);
    },

    //生成树方法
    stroke: function (config) {
        delete this.options.keyword;
        BI.extend(this.options.paras, config);
        //取消选中时使用
        this.selected_values = BI.deepClone(this.options.paras.selected_values) || {};
        var setting = this._configSetting();
        this._initTree(setting);
    }
});

$.shortcut("bi.sync_tree", BI.SyncTree);/**
 * guy
 * 局部树，两个请求树， 第一个请求构造树，第二个请求获取节点
 * @class BI.PartTree
 * @extends BI.SyncTree
 */
BI.PartTree = BI.inherit(BI.SyncTree, {
    _defaultConfig: function () {
        return BI.extend(BI.PartTree.superclass._defaultConfig.apply(this, arguments), {})
    },

    _init: function () {
        BI.PartTree.superclass._init.apply(this, arguments);
    },

    _loadMore: function () {
        var self = this, o = this.options;
        var op = BI.extend({}, o.paras, {
            type: BI.TreeView.REQ_TYPE_INIT_DATA,
            times: ++this.times
        });
        this.tip.setLoading();
        o.itemsCreator(op, function (d) {
            var hasNext = !!d.hasNext, nodes = d.items || [];
            o.paras.last_search_value = d.last_search_value;
            if (self._stop === true) {
                return;
            }
            if (!hasNext) {
                self.tip.setEnd();
            } else {
                self.tip.setLoaded();
            }
            if (nodes.length > 0) {
                self.nodes.addNodes(null, self._dealWidthNodes(nodes));
            }
        });
    },

    _selectTreeNode: function (treeId, treeNode) {
        var self = this, o = this.options;
        var parent_values = BI.deepClone(treeNode.parentValues || self._getParentValues(treeNode));
        var name = this._getNodeValue(treeNode)
//        var values = parent_values.concat([name]);
        if (treeNode.checked === true) {
            BI.SyncTree.superclass._selectTreeNode.apply(self, arguments);
        } else {
            o.itemsCreator(BI.extend({}, o.paras, {
                type: BI.TreeView.REQ_TYPE_CALCULATE_SELECT_DATA,
                selected_values: this.selected_values,
                not_selected_value: name,
                parent_values: parent_values
            }), function (new_values) {
                if (BI.isEqual(self.selected_values, new_values)) {
                    var tNode = treeNode;
                    var pNode = self._getTree(new_values, parent_values);
                    if (pNode[name]) {
                        delete pNode[name];
                    }
                    while (tNode != null && BI.isEmpty(pNode)) {
                        parent_values = parent_values.slice(0, parent_values.length - 1);
                        tNode = tNode.getParentNode();
                        if (tNode != null) {
                            pNode = self._getTree(new_values, parent_values);
                            name = self._getNodeValue(tNode);
                            delete pNode[name];
                        }
                    }
                }
                self.selected_values = new_values;
                BI.SyncTree.superclass._selectTreeNode.apply(self, arguments);
            });
        }
    },

    _getSelectedValues: function () {
        var self = this;
        var hashMap = {};
        var rootNoots = this.nodes.getNodes();
        track(rootNoots);
        function track(nodes) {
            BI.each(nodes, function (i, node) {
                var checkState = node.getCheckStatus();
                if (checkState.checked === false) {
                    return true;
                }
                var parentValues = node.parentValues || self._getParentValues(node);
                //把文字中的html去掉，其实就是把文字颜色去掉
                var values = parentValues.concat([self._getNodeValue(node)]);
                self._buildTree(hashMap, values);
//                if(checkState.checked === true && checkState.half === false && nodes[i].flag === true){
//                    continue;
//                }
                if (BI.isNotEmptyArray(node.children)) {
                    track(node.children);
                    return true;
                }
                if (checkState.half === true) {
                    self._getHalfSelectedValues(hashMap, node);
                }
            })
        }

        return hashMap;
    },

    _initTree: function (setting, keyword) {
        var self = this, o = this.options;
        this.times = 1;
        var tree = this.tree;
        tree.empty();
        self.tip.setVisible(false);
        this.loading();
        var op = BI.extend({}, o.paras, {
            type: BI.TreeView.REQ_TYPE_INIT_DATA,
            times: this.times
        });
        var complete = function (d) {
            if (self._stop === true || keyword != o.paras.keyword) {
                return;
            }
            var hasNext = !!d.hasNext, nodes = d.items || [];
            o.paras.last_search_value = d.last_search_value;
            if (nodes.length > 0) {
                callback(self._dealWidthNodes(nodes));
            }
            self.setTipVisible(nodes.length <= 0);
            self.loaded();
            if (!hasNext) {
                self.tip.invisible();
            } else {
                self.tip.setLoaded();
            }
            self.fireEvent(BI.Events.AFTERINIT);
        };

        function callback(nodes) {
            if (self._stop === true) {
                return;
            }
            self.nodes = $.fn.zTree.init(tree.element, setting, nodes);
        }

        BI.delay(function () {
            o.itemsCreator(op, complete);
        }, 100);
    },

    getValue: function () {
        var o = this.options;
        var result = BI.PartTree.superclass.getValue.apply(this, arguments);
        o.itemsCreator({
            type: BI.TreeView.REQ_TYPE_ADJUST_DATA,
            selected_values: result
        }, function (res) {
            result = res;
        });
        return result;
    },

    //生成树方法
    stroke: function (config) {
        var o = this.options;
        delete o.paras.keyword;
        BI.extend(o.paras, config);
        delete o.paras.last_search_value;
        //取消选中时使用
        this.selected_values = BI.deepClone(o.paras.selected_values) || {};
        //delete this.options.paras.selected_values;
        var setting = this._configSetting();
        this._initTree(setting, o.paras.keyword);
    }
});

$.shortcut("bi.part_tree", BI.PartTree);BI.Resizers = new BI.ResizeController();
BI.Layers = new BI.LayerController();
BI.Maskers = new BI.MaskersController();
BI.Bubbles = new BI.BubblesController();
BI.Tooltips = new BI.TooltipsController();
BI.Popovers = new BI.FloatBoxController();
BI.Broadcasts = new BI.BroadcastController();
/**
 * canvas绘图
 *
 * Created by GUY on 2015/11/18.
 * @class BI.Canvas
 * @extends BI.Widget
 */
BI.Canvas = BI.inherit(BI.Widget, {

    _defaultConfig: function () {
        return BI.extend(BI.Canvas.superclass._defaultConfig.apply(this, arguments), {
            baseCls: "bi-canvas"
        })
    },

    _init: function () {
        BI.Canvas.superclass._init.apply(this, arguments);
        var self = this, o = this.options;
        var canvas = document.createElement("canvas");
        if (!document.createElement('canvas').getContext) {
            canvas = window.G_vmlCanvasManager.initElement(canvas);
        }
        this.element.append(canvas);
        canvas.width = o.width;
        canvas.height = o.height;
        $(canvas).width("100%");
        $(canvas).height("100%");
        this.canvas = canvas;
        this._queue = [];
    },

    _getContext: function () {
        if (!this.ctx) {
            this.ctx = this.canvas.getContext('2d');
        }
        return this.ctx;
    },

    _attr: function (key, value) {
        var self = this;
        if (BI.isNull(key)) {
            return;
        }
        if (BI.isObject(key)) {
            BI.each(key, function (k, v) {
                self._queue.push({k: k, v: v});
            });
            return;
        }
        this._queue.push({k: key, v: value});
    },

    _line: function (x0, y0) {
        var self = this;
        var args = [].slice.call(arguments, 2);
        if (BI.isOdd(args.length)) {
            this._attr(BI.last(args));
            args = BI.initial(args);
        }
        this._attr("moveTo", [x0, y0]);
        var odd = BI.filter(args, function (i) {
            return i % 2 === 0;
        });
        var even = BI.filter(args, function (i) {
            return i % 2 !== 0;
        });
        args = BI.zip(odd, even);
        BI.each(args, function (i, point) {
            self._attr("lineTo", point);
        });
    },

    line: function (x0, y0, x1, y1) {
        this._line.apply(this, arguments);
        this._attr("stroke", []);
    },

    rect: function (x, y, w, h, color) {
        this._attr("fillStyle", color);
        this._attr("fillRect", [x, y, w, h]);
    },

    circle: function (x, y, radius, color) {
        this._attr({
            fillStyle: color,
            beginPath: [],
            arc: [x, y, radius, 0, Math.PI * 2, true],
            closePath: [],
            fill: []
        });
    },

    hollow: function () {
        this._attr("beginPath", []);
        this._line.apply(this, arguments);
        this._attr("closePath", []);
        this._attr("stroke", []);
    },

    solid: function () {
        this.hollow.apply(this, arguments);
        this._attr("fill", []);
    },

    gradient: function (x0, y0, x1, y1, start, end) {
        var grd = this._getContext().createLinearGradient(x0, y0, x1, y1);
        grd.addColorStop(0, start);
        grd.addColorStop(1, end);
        return grd;
    },

    reset: function () {
        this._getContext().clearRect(0, 0, this.canvas.width, this.canvas.height);
    },

    stroke: function (callback) {
        var self = this;
        BI.nextTick(function () {
            var ctx = self._getContext();
            BI.each(self._queue, function (i, q) {
                if (BI.isFunction(ctx[q.k])) {
                    ctx[q.k].apply(ctx, q.v);
                } else {
                    ctx[q.k] = q.v;
                }
            });
            self._queue = [];
            callback && callback();
        });
    }
});
$.shortcut("bi.canvas", BI.Canvas);/**
 * Collection
 *
 * Created by GUY on 2016/1/15.
 * @class BI.Collection
 * @extends BI.Widget
 */
BI.Collection = BI.inherit(BI.Widget, {
    _defaultConfig: function () {
        return BI.extend(BI.Collection.superclass._defaultConfig.apply(this, arguments), {
            baseCls: "bi-collection",
            width: 400,
            height: 300,
            overflowX: true,
            overflowY: true,
            cellSizeAndPositionGetter: BI.emptyFn,
            horizontalOverscanSize: 0,
            verticalOverscanSize: 0,
            scrollLeft: 0,
            scrollTop: 0,
            items: []
        });
    },

    _init: function () {
        BI.Collection.superclass._init.apply(this, arguments);
        var self = this, o = this.options;
        this.renderedCells = [];
        this.renderedKeys = [];
        this._scrollLock = false;
        this._debounceRelease = BI.debounce(function () {
            self._scrollLock = false;
        }, 150);
        this.container = BI.createWidget({
            type: "bi.absolute"
        });
        this.element.scroll(function () {
            if (self._scrollLock === true) {
                return;
            }
            o.scrollLeft = self.element.scrollLeft();
            o.scrollTop = self.element.scrollTop();
            self._calculateChildrenToRender();
            self.fireEvent(BI.Collection.EVENT_SCROLL, {
                scrollLeft: o.scrollLeft,
                scrollTop: o.scrollTop
            });
        });
        BI.createWidget({
            type: "bi.vertical",
            element: this,
            scrollable: o.overflowX === true && o.overflowY === true,
            scrolly: o.overflowX === false && o.overflowY === true,
            scrollx: o.overflowX === true && o.overflowY === false,
            items: [this.container]
        });
        if (o.items.length > 0) {
            this._calculateSizeAndPositionData();
            this._populate();
        }
        if (o.scrollLeft !== 0 || o.scrollTop !== 0) {
            BI.nextTick(function () {
                self.element.scrollTop(o.scrollTop);
                self.element.scrollLeft(o.scrollLeft);
            });
        }
    },

    _calculateSizeAndPositionData: function () {
        var o = this.options;
        var cellMetadata = [];
        var sectionManager = new BI.SectionManager();
        var height = 0;
        var width = 0;

        for (var index = 0, len = o.items.length; index < len; index++) {
            var cellMetadatum = o.cellSizeAndPositionGetter(index);

            if (
                cellMetadatum.height == null || isNaN(cellMetadatum.height) ||
                cellMetadatum.width == null || isNaN(cellMetadatum.width) ||
                cellMetadatum.x == null || isNaN(cellMetadatum.x) ||
                cellMetadatum.y == null || isNaN(cellMetadatum.y)
            ) {
                throw Error();
            }

            height = Math.max(height, cellMetadatum.y + cellMetadatum.height);
            width = Math.max(width, cellMetadatum.x + cellMetadatum.width);

            cellMetadatum.index = index;
            cellMetadata[index] = cellMetadatum;
            sectionManager.registerCell(cellMetadatum, index);
        }

        this._cellMetadata = cellMetadata;
        this._sectionManager = sectionManager;
        this._height = height;
        this._width = width;
    },

    _cellRenderers: function (height, width, x, y) {
        this._lastRenderedCellIndices = this._sectionManager.getCellIndices(height, width, x, y);
        return this._cellGroupRenderer()
    },

    _cellGroupRenderer: function () {
        var self = this, o = this.options;
        var rendered = [];
        BI.each(this._lastRenderedCellIndices, function (i, index) {
            var cellMetadata = self._sectionManager.getCellMetadata(index);
            rendered.push(cellMetadata);
        });
        return rendered;
    },

    _calculateChildrenToRender: function () {
        var self = this, o = this.options;
        var scrollLeft = BI.clamp(o.scrollLeft, 0, this._getMaxScrollLeft());
        var scrollTop = BI.clamp(o.scrollTop, 0, this._getMaxScrollTop());
        var left = Math.max(0, scrollLeft - o.horizontalOverscanSize);
        var top = Math.max(0, scrollTop - o.verticalOverscanSize);
        var right = Math.min(this._width, scrollLeft + o.width + o.horizontalOverscanSize);
        var bottom = Math.min(this._height, scrollTop + o.height + o.verticalOverscanSize);
        var childrenToDisplay = this._cellRenderers(bottom - top, right - left, left, top);
        var renderedCells = [], renderedKeys = [];
        for (var i = 0, len = childrenToDisplay.length; i < len; i++) {
            var datum = childrenToDisplay[i];
            var index = BI.deepIndexOf(this.renderedKeys, datum.index);
            if (index > -1) {
                if (datum.width !== this.renderedCells[index]._width) {
                    this.renderedCells[index]._width = datum.width;
                    this.renderedCells[index].el.setWidth(datum.width);
                }
                if (datum.height !== this.renderedCells[index]._height) {
                    this.renderedCells[index]._height = datum.height;
                    this.renderedCells[index].el.setHeight(datum.height);
                }
                if (this.renderedCells[index].left !== datum.x) {
                    this.renderedCells[index].el.element.css("left", datum.x + "px");
                }
                if (this.renderedCells[index].top !== datum.y) {
                    this.renderedCells[index].el.element.css("top", datum.y + "px");
                }
                renderedCells.push(this.renderedCells[index]);
            } else {
                var child = BI.createWidget(BI.extend({
                    type: "bi.label",
                    width: datum.width,
                    height: datum.height
                }, o.items[datum.index], {
                    cls: (o.items[datum.index].cls || "") + " container-cell" + (datum.y === 0 ? " first-row" : "") + (datum.x === 0 ? " first-col" : ""),
                    _left: datum.x,
                    _top: datum.y
                }));
                renderedCells.push({
                    el: child,
                    left: datum.x,
                    top: datum.y,
                    _width: datum.width,
                    _height: datum.height
                });
            }
            renderedKeys.push(datum.index);
        }
        //已存在的， 需要添加的和需要删除的
        var existSet = {}, addSet = {}, deleteArray = [];
        BI.each(renderedKeys, function (i, key) {
            if (BI.deepContains(self.renderedKeys, key)) {
                existSet[i] = key;
            } else {
                addSet[i] = key;
            }
        });
        BI.each(this.renderedKeys, function (i, key) {
            if (BI.deepContains(existSet, key)) {
                return;
            }
            if (BI.deepContains(addSet, key)) {
                return;
            }
            deleteArray.push(i);
        });
        BI.each(deleteArray, function (i, index) {
            self.renderedCells[index].el.destroy();
        });
        var addedItems = [];
        BI.each(addSet, function (index) {
            addedItems.push(renderedCells[index])
        });
        BI.createWidget({
            type: "bi.absolute",
            element: this.container,
            items: addedItems
        });
        this.renderedCells = renderedCells;
        this.renderedKeys = renderedKeys;
    },

    _getMaxScrollLeft: function () {
        return Math.max(0, this._width - this.options.width + (this.options.overflowX ? BI.DOM.getScrollWidth() : 0));
    },

    _getMaxScrollTop: function () {
        return Math.max(0, this._height - this.options.height + (this.options.overflowY ? BI.DOM.getScrollWidth() : 0));
    },

    _populate: function () {
        var o = this.options;
        if (o.items.length > 0) {
            this.container.setWidth(this._width);
            this.container.setHeight(this._height);

            this._calculateChildrenToRender();
            this.element.scrollTop(o.scrollTop);
            this.element.scrollLeft(o.scrollLeft);
        }
    },

    setScrollLeft: function (scrollLeft) {
        if (this.options.scrollLeft === scrollLeft) {
            return;
        }
        this._scrollLock = true;
        this.options.scrollLeft = BI.clamp(scrollLeft || 0, 0, this._getMaxScrollLeft());
        this._debounceRelease();
        this._calculateChildrenToRender();
        this.element.scrollLeft(this.options.scrollLeft);
    },

    setScrollTop: function (scrollTop) {
        if (this.options.scrollTop === scrollTop) {
            return;
        }
        this._scrollLock = true;
        this.options.scrollTop = BI.clamp(scrollTop || 0, 0, this._getMaxScrollTop());
        this._debounceRelease();
        this._calculateChildrenToRender();
        this.element.scrollTop(this.options.scrollTop);
    },

    setOverflowX: function (b) {
        var self = this;
        if (this.options.overflowX !== !!b) {
            this.options.overflowX = !!b;
            BI.nextTick(function () {
                self.element.css({overflowX: !!b ? "auto" : "hidden"});
            });
        }
    },

    setOverflowY: function (b) {
        var self = this;
        if (this.options.overflowY !== !!b) {
            this.options.overflowY = !!b;
            BI.nextTick(function () {
                self.element.css({overflowY: !!b ? "auto" : "hidden"});
            });
        }
    },

    getScrollLeft: function () {
        return this.options.scrollLeft;
    },

    getScrollTop: function () {
        return this.options.scrollTop;
    },

    getMaxScrollLeft: function () {
        return this._getMaxScrollLeft();
    },

    getMaxScrollTop: function () {
        return this._getMaxScrollTop();
    },

    restore: function () {
        BI.each(this.renderedCells, function (i, cell) {
            cell.el.destroy();
        });
        this.renderedCells = [];
        this.renderedKeys = [];
        this._scrollLock = false;
    },

    populate: function (items) {
        if (items && items !== this.options.items) {
            this.options.items = items;
            this._calculateSizeAndPositionData();
        }
        this._populate();
    }
});
BI.Collection.EVENT_SCROLL = "EVENT_SCROLL";
$.shortcut('bi.collection_view', BI.Collection);/**
 * @class BI.Combo
 * @extends BI.Widget
 */
BI.Combo = BI.inherit(BI.Widget, {
    _defaultConfig: function () {
        var conf = BI.Combo.superclass._defaultConfig.apply(this, arguments);
        return BI.extend(conf, {
            baseCls: (conf.baseCls || "") + " bi-combo",
            trigger: "click",
            toggle: true,
            direction: "bottom", //top||bottom||left||right||top,left||top,right||bottom,left||bottom,right
            isDefaultInit: false,
            isNeedAdjustHeight: true,//是否需要高度调整
            isNeedAdjustWidth: true,
            stopEvent: false,
            stopPropagation: false,
            adjustLength: 0,//调整的距离
            adjustXOffset: 0,
            adjustYOffset: 0,
            hideChecker: BI.emptyFn,
            offsetStyle: "left", //left,right,center
            el: {},
            popup: {},
            comboClass: "bi-combo-popup",
            hoverClass: "bi-combo-hover"
        })
    },

    _init: function () {
        BI.Combo.superclass._init.apply(this, arguments);
        var self = this, o = this.options;
        this._initCombo();
        this._initPullDownAction();
        this.combo.on(BI.Controller.EVENT_CHANGE, function (type, value, obj) {
            if (self.isEnabled() && this.isEnabled()) {
                if (type === BI.Events.EXPAND) {
                    self._popupView();
                }
                if (type === BI.Events.COLLAPSE) {
                    self._hideView();
                }
                if (type === BI.Events.EXPAND || type === BI.Events.COLLAPSE) {
                    self.fireEvent(BI.Controller.EVENT_CHANGE, arguments);
                }

                if (type === BI.Events.CLICK) {
                    self.fireEvent(BI.Combo.EVENT_TRIGGER_CHANGE, obj);
                }
            }
        });

        self.element.on("mouseenter." + self.getName(), function (e) {
            if (self.isEnabled() && self.combo.isEnabled()) {
                self.element.addClass(o.hoverClass);
            }
        });
        self.element.on("mouseleave." + self.getName(), function (e) {
            if (self.isEnabled() && self.combo.isEnabled()) {
                self.element.removeClass(o.hoverClass);
            }
        });

        BI.createWidget({
            type: "bi.vertical",
            scrolly: false,
            element: this,
            items: [
                {el: this.combo}
            ]
        });
        o.isDefaultInit && (this._assertPopupView());
        BI.Resizers.add(this.getName(), BI.bind(function () {
            if (this.isViewVisible()) {
                this._hideView();
            }
        }, this));
    },

    _toggle: function () {
        this._assertPopupViewRender();
        if (this.popupView.isVisible()) {
            this._hideView();
        } else {
            if (this.isEnabled()) {
                this._popupView();
            }
        }
    },

    _initPullDownAction: function () {
        var self = this, o = this.options;
        var evs = this.options.trigger.split(",");
        var st = function (e) {
            if (o.stopEvent) {
                e.stopEvent();
            }
            if (o.stopPropagation) {
                e.stopPropagation();
            }
        };
        BI.each(evs, function (i, ev) {
            switch (ev) {
                case "hover":
                    self.element.on("mouseenter." + self.getName(), function (e) {
                        if (self.isEnabled() && self.combo.isEnabled()) {
                            self._popupView();
                            self.fireEvent(BI.Controller.EVENT_CHANGE, BI.Events.EXPAND, "", self.combo);
                            self.fireEvent(BI.Combo.EVENT_EXPAND);
                        }
                    });
                    self.element.on("mouseleave." + self.getName(), function (e) {
                        if (self.isEnabled() && self.combo.isEnabled() && o.toggle === true) {
                            self._hideView();
                            self.fireEvent(BI.Controller.EVENT_CHANGE, BI.Events.COLLAPSE, "", self.combo);
                            self.fireEvent(BI.Combo.EVENT_COLLAPSE);
                        }
                    });
                    break;
                case "click":
                    var debounce = BI.debounce(function (e) {
                        if (self.combo.element.__isMouseInBounds__(e)) {
                            if (self.isEnabled() && self.combo.isEnabled()) {
                                o.toggle ? self._toggle() : self._popupView();
                                if (self.isViewVisible()) {
                                    self.fireEvent(BI.Controller.EVENT_CHANGE, BI.Events.EXPAND, "", self.combo);
                                    self.fireEvent(BI.Combo.EVENT_EXPAND);
                                } else {
                                    self.fireEvent(BI.Controller.EVENT_CHANGE, BI.Events.COLLAPSE, "", self.combo);
                                    self.fireEvent(BI.Combo.EVENT_COLLAPSE);
                                }
                            }
                        }
                    }, BI.EVENT_RESPONSE_TIME, true);
                    self.element.off(ev + "." + self.getName()).on(ev + "." + self.getName(), function(e){
                        debounce(e);
                        st(e);
                    });
                    break;
            }
        });
    },

    _initCombo: function () {
        this.combo = BI.createWidget(this.options.el);
    },

    _assertPopupView: function () {
        var self = this;
        if (this.popupView == null) {
            this.popupView = BI.createWidget(this.options.popup, {
                type: "bi.popup_view"
            });
            this.popupView.on(BI.Controller.EVENT_CHANGE, function (type, value, obj) {
                if (type === BI.Events.CLICK) {
                    self.combo.setValue(self.getValue());
                    self.fireEvent(BI.Combo.EVENT_CHANGE, value, obj);
                }
                self.fireEvent(BI.Controller.EVENT_CHANGE, arguments);
            });
            this.popupView.setVisible(false);
            BI.nextTick(function () {
                self.fireEvent(BI.Combo.EVENT_AFTER_INIT);
            });
        }
    },

    _assertPopupViewRender: function () {
        this._assertPopupView();
        if (!this._rendered) {
            BI.createWidget({
                type: "bi.vertical",
                scrolly: false,
                element: this,
                items: [
                    {el: this.popupView}
                ]
            });
            this._rendered = true;
        }
    },

    _hideIf: function (e) {
        if (this.element.__isMouseInBounds__(e) || (this.popupView && this.popupView.element.__isMouseInBounds__(e))) {
            return;
        }
        if (this.element.find(e.target).length > 0) {
            return;
        }
        var isHide = this.options.hideChecker.apply(this, [e]);
        if (isHide === false) {
            return;
        }
        this._hideView();
    },

    _hideView: function () {
        this.fireEvent(BI.Combo.EVENT_BEFORE_HIDEVIEW);
        this.popupView && this.popupView.invisible();
        this.element.removeClass(this.options.comboClass);

        $(document).unbind("mousedown." + this.getName()).unbind("mousewheel." + this.getName());
        this.fireEvent(BI.Combo.EVENT_AFTER_HIDEVIEW);
    },

    _popupView: function () {
        this._assertPopupViewRender();
        this.fireEvent(BI.Combo.EVENT_BEFORE_POPUPVIEW);

        this.popupView.visible();
        this.adjustWidth();
        this.adjustHeight();

        this.element.addClass(this.options.comboClass);
        $(document).bind("mousedown." + this.getName(), BI.bind(this._hideIf, this)).bind("mousewheel." + this.getName(), BI.bind(this._hideIf, this));
        this.fireEvent(BI.Combo.EVENT_AFTER_POPUPVIEW);
    },

    adjustWidth: function () {
        var o = this.options;
        if (!this.popupView) {
            return;
        }
        if (o.isNeedAdjustWidth === true) {
            this.resetListWidth("");
            var width = this.popupView.element.outerWidth();
            var maxW = this.element.outerWidth() || o.width;
            if (width > maxW + 80) {
                maxW = maxW + 80;
            } else if (width > maxW) {
                maxW = width;
            }
            this.resetListWidth(maxW < 100 ? 100 : maxW);
        }
    },

    adjustHeight: function () {
        var o = this.options, p = {};
        if (!this.popupView) {
            return;
        }
        var isVisible = this.popupView.isVisible();
        this.popupView.visible();
        switch (o.direction) {
            case "bottom":
            case "bottom,right":
                p = $.getComboPosition(this.combo, this.popupView, o.adjustXOffset, o.adjustYOffset || o.adjustLength, o.isNeedAdjustHeight, ['bottom', 'top', 'right', 'left'], o.offsetStyle);
                break;
            case "top":
            case "top,right":
                p = $.getComboPosition(this.combo, this.popupView, o.adjustYOffset || o.adjustLength, o.isNeedAdjustHeight, ['top', 'bottom', 'right', 'left'], o.offsetStyle);
                break;
            case "left":
            case "left,bottom":
                p = $.getComboPosition(this.combo, this.popupView, o.adjustXOffset || o.adjustLength, o.adjustYOffset, o.isNeedAdjustHeight, ['left', 'right', 'bottom', 'top'], o.offsetStyle);
                break;
            case "right":
            case "right,bottom":
                p = $.getComboPosition(this.combo, this.popupView, o.adjustXOffset || o.adjustLength, o.adjustYOffset, o.isNeedAdjustHeight, ['right', 'left', 'bottom', 'top'], o.offsetStyle);
                break;
            case "top,left":
                p = $.getComboPosition(this.combo, this.popupView, o.adjustXOffset, o.adjustYOffset || o.adjustLength, o.isNeedAdjustHeight, ['top', 'bottom', 'left', 'right'], o.offsetStyle);
                break;
            case "bottom,left":
                p = $.getComboPosition(this.combo, this.popupView, o.adjustXOffset, o.adjustYOffset || o.adjustLength, o.isNeedAdjustHeight, ['bottom', 'top', 'left', 'right'], o.offsetStyle);
                break;
            case "left,top":
                p = $.getComboPosition(this.combo, this.popupView, o.adjustXOffset || o.adjustLength, o.adjustYOffset, o.isNeedAdjustHeight, ['left', 'right', 'top', 'bottom'], o.offsetStyle);
                break;
            case "right,top":
                p = $.getComboPosition(this.combo, this.popupView, o.adjustXOffset || o.adjustLength, o.adjustYOffset, o.isNeedAdjustHeight, ['right', 'left', 'top', 'bottom'], o.offsetStyle);
                break;
            case "top,custom":
            case "custom,top":
                p = $.getTopAdaptPosition(this.combo, this.popupView, o.adjustYOffset || o.adjustLength, o.isNeedAdjustHeight);
                break;
            case "custom,bottom":
            case "bottom,custom":
                p = $.getBottomAdaptPosition(this.combo, this.popupView, o.adjustYOffset || o.adjustLength, o.isNeedAdjustHeight);
                break;
            case "left,custom":
            case "custom,left":
                p = $.getLeftAdaptPosition(this.combo, this.popupView, o.adjustXOffset || o.adjustLength);
                delete p.top;
                delete p.adaptHeight;
                break;
            case "custom,right":
            case "right,custom":
                p = $.getRightAdaptPosition(this.combo, this.popupView, o.adjustXOffset || o.adjustLength);
                delete p.top;
                delete p.adaptHeight;
                break;
        }

        if ("adaptHeight" in p) {
            this.resetListHeight(p['adaptHeight']);
        }
        if ("left" in p) {
            this.popupView.element.css({
                left: p.left
            });
        }
        if ("top" in p) {
            this.popupView.element.css({
                top: p.top
            });
        }
        this.position = p;
        this.popupView.setVisible(isVisible);
    },

    resetListHeight: function (h) {
        this._assertPopupView();
        this.popupView.resetHeight && this.popupView.resetHeight(h);
    },

    resetListWidth: function (w) {
        this._assertPopupView();
        this.popupView.resetWidth && this.popupView.resetWidth(w);
    },

    populate: function (items) {
        this._assertPopupView();
        this.popupView.populate.apply(this.popupView, arguments);
        this.combo.populate.apply(this.combo, arguments);
    },

    setEnable: function (arg) {
        BI.Combo.superclass.setEnable.apply(this, arguments);
        this.combo && this.combo.setEnable(arg);
        this.popupView && this.popupView.setEnable(arg);
        !arg && this.isViewVisible() && this._hideView();
    },

    setValue: function (v) {
        this._assertPopupView();
        this.combo.setValue(v);
        this.popupView && this.popupView.setValue(v);
    },

    getValue: function () {
        this._assertPopupView();
        return this.popupView && this.popupView.getValue();
    },

    isViewVisible: function () {
        return this.isEnabled() && this.combo.isEnabled() && !!this.popupView && this.popupView.isVisible();
    },

    showView: function () {
        if (this.isEnabled() && this.combo.isEnabled()) {
            this._popupView();
        }
    },

    hideView: function () {
        this._hideView();
    },

    getView: function () {
        return this.popupView;
    },

    getPopupPosition: function () {
        return this.position;
    },

    doBehavior: function () {
        this._assertPopupView();
        this.popupView && this.popupView.doBehavior.apply(this.popupView, arguments);
    },

    toggle: function () {
        this._toggle();
    },

    destroy: function () {
        $(document).unbind("mousedown." + this.getName())
            .unbind("mousewheel." + this.getName())
            .unbind("mouseenter." + this.getName())
            .unbind("mousemove." + this.getName())
            .unbind("mouseleave." + this.getName());
        BI.Resizers.remove(this.getName());
        BI.Combo.superclass.destroy.apply(this, arguments);
    }
});
BI.Combo.EVENT_TRIGGER_CHANGE = "EVENT_TRIGGER_CHANGE";
BI.Combo.EVENT_CHANGE = "EVENT_CHANGE";
BI.Combo.EVENT_EXPAND = "EVENT_EXPAND";
BI.Combo.EVENT_COLLAPSE = "EVENT_COLLAPSE";
BI.Combo.EVENT_AFTER_INIT = "EVENT_AFTER_INIT";


BI.Combo.EVENT_BEFORE_POPUPVIEW = "EVENT_BEFORE_POPUPVIEW";
BI.Combo.EVENT_AFTER_POPUPVIEW = "EVENT_AFTER_POPUPVIEW";
BI.Combo.EVENT_BEFORE_HIDEVIEW = "EVENT_BEFORE_HIDEVIEW";
BI.Combo.EVENT_AFTER_HIDEVIEW = "EVENT_AFTER_HIDEVIEW";

$.shortcut("bi.combo", BI.Combo);/**
 *
 * 某个可以展开的节点
 *
 * Created by GUY on 2015/9/10.
 * @class BI.Expander
 * @extends BI.Widget
 */
BI.Expander = BI.inherit(BI.Widget, {
    _defaultConfig: function () {
        return BI.extend(BI.Expander.superclass._defaultConfig.apply(this, arguments), {
            baseCls: "bi-expander",
            trigger: "click",
            toggle: true,
            //direction: "bottom", //top,bottom四个方向
            isDefaultInit: false, //是否默认初始化子节点
            el: {},
            popup: {},
            expanderClass: "bi-expander-popup",
            hoverClass: "bi-expander-hover"
        })
    },

    _init: function () {
        BI.Expander.superclass._init.apply(this, arguments);
        var self = this, o = this.options;
        this._expanded = !!o.el.open;
        this._initExpander();
        this._initPullDownAction();
        this.expander.on(BI.Controller.EVENT_CHANGE, function (type, value, obj) {
            if (type === BI.Events.EXPAND) {
                self._popupView();
            }
            if (type === BI.Events.COLLAPSE) {
                self._hideView();
            }
            if (self.isEnabled() && this.isEnabled()) {
                if (type === BI.Events.EXPAND) {
                    self.fireEvent(BI.Controller.EVENT_CHANGE, arguments);
                    self.fireEvent(BI.Expander.EVENT_EXPAND);
                }
                if(type === BI.Events.COLLAPSE) {
                    self.fireEvent(BI.Controller.EVENT_CHANGE, arguments);
                    self.fireEvent(BI.Expander.EVENT_COLLAPSE);
                }
                if (type === BI.Events.CLICK) {
                    self.fireEvent(BI.Expander.EVENT_TRIGGER_CHANGE, value, obj);
                }
            }
        });

        this.element.hover(function () {
            if (self.isEnabled() && self.expander.isEnabled()) {
                self.element.addClass(o.hoverClass);
            }
        }, function () {
            if (self.isEnabled() && self.expander.isEnabled()) {
                self.element.removeClass(o.hoverClass);
            }
        });
        BI.createWidget({
            type: "bi.vertical",
            scrolly: false,
            element: this,
            items: [
                {el: this.expander}
            ]
        });
        o.isDefaultInit && this._assertPopupView();
        if (this.expander.isOpened() === true) {
            this._popupView();
        }
    },

    _toggle: function () {
        this._assertPopupViewRender();
        if (this.popupView.isVisible()) {
            this._hideView();
        } else {
            if (this.isEnabled()) {
                this._popupView();
            }
        }
    },

    _initPullDownAction: function () {
        var self = this, o = this.options;
        var evs = this.options.trigger.split(",");
        BI.each(evs, function (i, e) {
            switch (e) {
                case "hover":
                    self.element[e](function (e) {
                        if (self.isEnabled() && self.expander.isEnabled()) {
                            self._popupView();
                            self.fireEvent(BI.Controller.EVENT_CHANGE, BI.Events.EXPAND, '', self.expander);
                            self.fireEvent(BI.Expander.EVENT_EXPAND);
                        }
                    }, function () {
                        if (self.isEnabled() && self.expander.isEnabled() && o.toggle) {
                            self._hideView();
                            self.fireEvent(BI.Controller.EVENT_CHANGE, BI.Events.COLLAPSE, '', self.expander);
                            self.fireEvent(BI.Expander.EVENT_COLLAPSE);
                        }
                    });
                    break;
                default :
                    if (e) {
                        self.element.off(e + "." + self.getName()).on(e + "." + self.getName(), BI.debounce(function (e) {
                            if (self.expander.element.__isMouseInBounds__(e)) {
                                if (self.isEnabled() && self.expander.isEnabled()) {
                                    o.toggle ? self._toggle() : self._popupView();
                                    if (self.isExpanded()) {
                                        self.fireEvent(BI.Controller.EVENT_CHANGE, BI.Events.EXPAND, "", self.expander);
                                        self.fireEvent(BI.Expander.EVENT_EXPAND);
                                    } else {
                                        self.fireEvent(BI.Controller.EVENT_CHANGE, BI.Events.COLLAPSE, '', self.expander);
                                        self.fireEvent(BI.Expander.EVENT_COLLAPSE);
                                    }
                                }
                            }
                        }, BI.EVENT_RESPONSE_TIME, true));
                    }
                    break;
            }
        })
    },

    _initExpander: function () {
        this.expander = BI.createWidget(this.options.el);
    },

    _assertPopupView: function () {
        var self = this;
        if (this.popupView == null) {
            this.popupView = BI.createWidget(this.options.popup, {
                type: "bi.button_group",
                cls: "expander-popup",
                layouts: [{
                    type: "bi.vertical",
                    hgap: 0,
                    vgap: 0
                }]
            });
            this.popupView.on(BI.Controller.EVENT_CHANGE, function (type, value, obj) {
                self.fireEvent(BI.Controller.EVENT_CHANGE, arguments);
                if (type === BI.Events.CLICK) {
                    //self.setValue(self.getValue());
                    self.fireEvent(BI.Expander.EVENT_CHANGE, value, obj);
                }
            });
            this.popupView.setVisible(this.isExpanded());
            BI.nextTick(function () {
                self.fireEvent(BI.Expander.EVENT_AFTER_INIT);
            });
        }
    },

    _assertPopupViewRender: function () {
        this._assertPopupView();
        if (!this._rendered) {
            BI.createWidget({
                type: "bi.vertical",
                scrolly: false,
                element: this,
                items: [
                    {el: this.popupView}
                ]
            });
            this._rendered = true;
        }
    },

    _hideView: function () {
        this.fireEvent(BI.Expander.EVENT_BEFORE_HIDEVIEW);
        this._expanded = false;
        this.expander.setOpened(false);
        this.popupView && this.popupView.invisible();
        this.element.removeClass(this.options.expanderClass);

        this.fireEvent(BI.Expander.EVENT_AFTER_HIDEVIEW);
    },

    _popupView: function () {
        this._assertPopupViewRender();
        this.fireEvent(BI.Expander.EVENT_BEFORE_POPUPVIEW);
        this._expanded = true;
        this.expander.setOpened(true);
        this.popupView.visible();
        this.element.addClass(this.options.expanderClass);
        this.fireEvent(BI.Expander.EVENT_AFTER_POPUPVIEW);
    },

    populate: function (items) {
        //this._assertPopupView();
        this.popupView && this.popupView.populate.apply(this.popupView, arguments);
        this.expander.populate.apply(this.expander, arguments);
    },

    setEnable: function (arg) {
        BI.Expander.superclass.setEnable.apply(this, arguments);
        this.expander && this.expander.setEnable(arg);
        this.popupView && this.popupView.setEnable(arg);
        !arg && this._hideView();
    },

    setValue: function (v) {
        //this._assertPopupView();
        this.expander.setValue(v);
        this.popupView && this.popupView.setValue(v);
    },

    getValue: function () {
        //this._assertPopupView();
        return this.popupView ? this.popupView.getValue() : [];
    },

    isViewVisible: function () {
        return this.isEnabled() && this.expander.isEnabled() && !!this.popupView && this.popupView.isVisible();
    },

    isExpanded: function () {
        return this._expanded;
    },

    showView: function () {
        if (this.isEnabled() && this.expander.isEnabled()) {
            this._popupView();
        }
    },

    hideView: function () {
        this._hideView();
    },

    getView: function () {
        return this.popupView;
    },

    doBehavior: function () {
        //this._assertPopupView();
        this.popupView && this.popupView.doBehavior.apply(this.popupView, arguments);
    },

    getAllLeaves: function () {
        return this.popupView && this.popupView.getAllLeaves();
    },

    getNodeById: function (id) {
        if (this.expander.options.id === id) {
            return this.expander;
        }
        return this.popupView && this.popupView.getNodeById(id);
    },

    getNodeByValue: function (value) {
        if (this.expander.getValue() === value) {
            return this.expander;
        }
        return this.popupView && this.popupView.getNodeByValue(value);
    },

    destroy: function () {
        BI.Expander.superclass.destroy.apply(this, arguments);
    }
});
BI.Expander.EVENT_EXPAND = "EVENT_EXPAND";
BI.Expander.EVENT_COLLAPSE = "EVENT_COLLAPSE";
BI.Expander.EVENT_TRIGGER_CHANGE = "EVENT_TRIGGER_CHANGE";
BI.Expander.EVENT_CHANGE = "EVENT_CHANGE";
BI.Expander.EVENT_AFTER_INIT = "EVENT_AFTER_INIT";


BI.Expander.EVENT_BEFORE_POPUPVIEW = "EVENT_BEFORE_POPUPVIEW";
BI.Expander.EVENT_AFTER_POPUPVIEW = "EVENT_AFTER_POPUPVIEW";
BI.Expander.EVENT_BEFORE_HIDEVIEW = "EVENT_BEFORE_HIDEVIEW";
BI.Expander.EVENT_AFTER_HIDEVIEW = "EVENT_AFTER_HIDEVIEW";

$.shortcut("bi.expander", BI.Expander);/**
 * Created by GUY on 2015/8/10.
 */

BI.ComboGroup = BI.inherit(BI.Widget, {
    _defaultConfig: function () {
        return BI.extend(BI.ComboGroup.superclass._defaultConfig.apply(this, arguments), {
            baseCls: "bi-combo-group",

            //以下这些属性对每一个combo都是公用的
            trigger: "click,hover",
            direction: "right",
            adjustLength: 0,
            isDefaultInit: false,
            isNeedAdjustHeight: false,
            isNeedAdjustWidth: false,

            el: {type: "bi.text_button", text: "", value: ""},
            children: [],

            popup: {
                el: {
                    type: "bi.button_tree",
                    chooseType: 0,
                    layouts: [{
                        type: "bi.vertical"
                    }]
                }
            }
        })
    },

    _init: function () {
        BI.ComboGroup.superclass._init.apply(this, arguments);
        this.populate(this.options.el);
    },

    populate: function (item) {
        var self = this, o = this.options;
        var children = o.children;
        if (BI.isEmpty(children)) {
            throw new Error("ComboGroup构造错误");
        }
        BI.each(children, function (i, ch) {
            var son = BI.formatEL(ch).el.children;
            ch = BI.formatEL(ch).el;
            if (!BI.isEmpty(son)) {
                ch.el = BI.clone(ch);
                ch.children = son;
                ch.type = "bi.combo_group";
                ch.action = o.action;
                ch.height = o.height;
                ch.direction = o.direction;
                ch.isDefaultInit = o.isDefaultInit;
                ch.isNeedAdjustHeight = o.isNeedAdjustHeight;
                ch.isNeedAdjustWidth = o.isNeedAdjustWidth;
                ch.adjustLength = o.adjustLength;
                ch.popup = o.popup;
            }
        })
        this.combo = BI.createWidget({
            type: "bi.combo",
            element: this,
            height: o.height,
            trigger: o.trigger,
            direction: o.direction,
            isDefaultInit: o.isDefaultInit,
            isNeedAdjustWidth: o.isNeedAdjustWidth,
            isNeedAdjustHeight: o.isNeedAdjustHeight,
            adjustLength: o.adjustLength,
            el: item,
            popup: BI.extend({}, o.popup, {
                el: BI.extend({
                    items: children
                }, o.popup.el)
            })
        })
        this.combo.on(BI.Controller.EVENT_CHANGE, function (type, value, obj) {
            self.fireEvent(BI.Controller.EVENT_CHANGE, arguments);
            if (type === BI.Events.CLICK) {
                self.fireEvent(BI.ComboGroup.EVENT_CHANGE, obj);
            }
        })
    },

    setEnable: function (b) {
        BI.ComboGroup.superclass.setEnable.apply(this, arguments);
        this.combo && this.combo.setEnable(b);
    },

    getValue: function () {
        return this.combo.getValue();
    },

    setValue: function (v) {
        this.combo.setValue(v);
    }
});
BI.ComboGroup.EVENT_CHANGE = "EVENT_CHANGE";

$.shortcut("bi.combo_group", BI.ComboGroup);/**
 * 加载控件
 *
 * Created by GUY on 2015/8/31.
 * @class BI.Loader
 * @extends BI.Widget
 */
BI.Loader = BI.inherit(BI.Widget, {
    _defaultConfig: function () {
        return BI.extend(BI.Loader.superclass._defaultConfig.apply(this, arguments), {
            baseCls: "bi-loader",

            direction: "top",
            isDefaultInit: true,//是否默认初始化数据
            logic: {
                dynamic: true,
                scrolly: true
            },

            //下面是button_group的属性
            el: {
                type: "bi.button_group"
            },

            items: [],
            itemsCreator: BI.emptyFn,
            onLoaded: BI.emptyFn,

            //下面是分页信息
            count: false,
            prev: false,
            next: {},
            hasPrev: BI.emptyFn,
            hasNext: BI.emptyFn
        })
    },

    _prevLoad: function () {
        var self = this, o = this.options;
        this.prev.setLoading();
        o.itemsCreator.apply(this, [{times: --this.times}, function () {
            self.prev.setLoaded();
            self.prependItems.apply(self, arguments);
        }]);
    },

    _nextLoad: function () {
        var self = this, o = this.options;
        this.next.setLoading();
        o.itemsCreator.apply(this, [{times: ++this.times}, function () {
            self.next.setLoaded();
            self.addItems.apply(self, arguments);
        }]);
    },

    _init: function () {
        BI.Loader.superclass._init.apply(this, arguments);
        var self = this, o = this.options;
        if (o.itemsCreator === false) {
            o.prev = false;
            o.next = false;
        }
        if (o.prev !== false) {
            this.prev = BI.createWidget(BI.extend({
                type: "bi.loading_bar"
            }, o.prev));
            this.prev.on(BI.Controller.EVENT_CHANGE, function (type) {
                if (type === BI.Events.CLICK) {
                    self._prevLoad();
                }
            });
        }

        this.button_group = BI.createWidget(o.el, {
            type: "bi.button_group",
            chooseType: 0,
            items: o.items,
            behaviors: {},
            layouts: [{
                type: "bi.vertical"
            }]
        });
        this.button_group.on(BI.Controller.EVENT_CHANGE, function (type, value, obj) {
            self.fireEvent(BI.Controller.EVENT_CHANGE, arguments);
            if (type === BI.Events.CLICK) {
                self.fireEvent(BI.Loader.EVENT_CHANGE, obj);
            }
        });

        if (o.next !== false) {
            this.next = BI.createWidget(BI.extend({
                type: "bi.loading_bar"
            }, o.next));
            this.next.on(BI.Controller.EVENT_CHANGE, function (type) {
                if (type === BI.Events.CLICK) {
                    self._nextLoad();
                }
            })
        }

        BI.createWidget(BI.extend({
            element: this
        }, BI.LogicFactory.createLogic(BI.LogicFactory.createLogicTypeByDirection(o.direction), BI.extend({
            scrolly: true
        }, o.logic, {
            items: BI.LogicFactory.createLogicItemsByDirection(o.direction, this.prev, this.button_group, this.next)
        }))));

        o.isDefaultInit && BI.isEmpty(o.items) && BI.nextTick(BI.bind(function () {
            o.isDefaultInit && BI.isEmpty(o.items) && this.populate();
        }, this));
        if (BI.isNotEmptyArray(o.items)) {
            this.populate(o.items);
        }
    },

    hasPrev: function () {
        var o = this.options;
        if (BI.isNumber(o.count)) {
            return this.count < o.count;
        }
        return !!o.hasPrev.apply(this, [{
            times: this.times,
            count: this.count
        }])
    },

    hasNext: function () {
        var o = this.options;
        if (BI.isNumber(o.count)) {
            return this.count < o.count;
        }
        return !!o.hasNext.apply(this, [{
            times: this.times,
            count: this.count
        }])
    },

    prependItems: function (items) {
        this.count += items.length;
        if (this.next !== false) {
            if (this.hasPrev()) {
                this.options.items = this.options.items.concat(items);
                this.prev.setLoaded();
            } else {
                this.prev.setEnd();
            }
        }
        this.button_group.prependItems.apply(this.button_group, arguments);
    },

    addItems: function (items) {
        this.count += items.length;
        if (BI.isObject(this.next)) {
            if (this.hasNext()) {
                this.options.items = this.options.items.concat(items);
                this.next.setLoaded();
            } else {
                this.next.setEnd();
            }
        }
        this.button_group.addItems.apply(this.button_group, arguments);
    },

    populate: function (items) {
        var self = this, o = this.options;
        if (arguments.length === 0 && (BI.isFunction(o.itemsCreator))) {
            o.itemsCreator.apply(this, [{times: 1}, function () {
                if (arguments.length === 0) {
                    throw new Error("arguments can not be null!!!");
                }
                self.populate.apply(self, arguments);
                o.onLoaded();
            }]);
            return;
        }
        this.options.items = items;
        this.times = 1;
        this.count = 0;
        this.count += items.length;
        if (BI.isObject(this.next)) {
            if (this.hasNext()) {
                this.next.setLoaded();
            } else {
                this.next.invisible();
            }
        }
        if (BI.isObject(this.prev)) {
            if (this.hasPrev()) {
                this.prev.setLoaded();
            } else {
                this.prev.invisible();
            }
        }
        this.button_group.populate.apply(this.button_group, arguments);
    },

    setEnable: function (v) {
        this.button_group.setEnable(v);
    },

    doBehavior: function () {
        this.button_group.doBehavior.apply(this.button_group, arguments);
    },

    setNotSelectedValue: function () {
        this.button_group.setNotSelectedValue.apply(this.button_group, arguments);
    },

    getNotSelectedValue: function () {
        return this.button_group.getNotSelectedValue();
    },

    setValue: function () {
        this.button_group.setValue.apply(this.button_group, arguments);
    },

    getValue: function () {
        return this.button_group.getValue.apply(this.button_group, arguments);
    },

    getAllButtons: function () {
        return this.button_group.getAllButtons();
    },

    getAllLeaves: function () {
        return this.button_group.getAllLeaves();
    },

    getSelectedButtons: function () {
        return this.button_group.getSelectedButtons();
    },

    getNotSelectedButtons: function () {
        return this.button_group.getNotSelectedButtons();
    },

    getIndexByValue: function (value) {
        return this.button_group.getIndexByValue(value);
    },

    getNodeById: function (id) {
        return this.button_group.getNodeById(id);
    },

    getNodeByValue: function (value) {
        return this.button_group.getNodeByValue(value);
    },

    empty: function () {
        this.button_group.empty();
        BI.each([this.prev, this.next], function (i, ob) {
            ob && ob.setVisible(false);
        });
    },

    destroy: function () {
        BI.Loader.superclass.destroy.apply(this, arguments);
    }
});
BI.Loader.EVENT_CHANGE = "EVENT_CHANGE";
$.shortcut("bi.loader", BI.Loader);/**
 * Created by GUY on 2015/6/26.
 */

BI.Navigation = BI.inherit(BI.Widget, {
    _defaultConfig: function(){
        return BI.extend(BI.Navigation.superclass._defaultConfig.apply(this,arguments), {
            direction: "bottom",//top, bottom, left, right, custom
            logic: {
                dynamic: false
            },
            defaultShowIndex: 0,
            tab: {
                type: "bi.button_group",
                items: [],
                layouts: []
            },
            cardCreator: function(v){
                return BI.createWidget();
            },

            afterCardCreated: BI.emptyFn,
            afterCardShow: BI.emptyFn
        })
    },

    _init: function(){
        BI.Navigation.superclass._init.apply(this,arguments);
        var self = this, o = this.options;
        this.tab = BI.createWidget(this.options.tab, {type: "bi.button_group"});
        this.cardMap = {};
        this.showIndex = 0;
        this.layout = BI.createWidget({
            type: "bi.card"
        });
        BI.createWidget(BI.extend({
            element: this
        }, BI.LogicFactory.createLogic(BI.LogicFactory.createLogicTypeByDirection(o.direction), BI.extend({}, o.logic, {
            items: BI.LogicFactory.createLogicItemsByDirection(o.direction, this.tab, this.layout)
        }))));


        new BI.ShowListener({
            eventObj: this.tab,
            cardLayout: this.layout,
            cardNameCreator: function(v){
                return self.showIndex + v;
            },
            cardCreator: function(v){
                var card = o.cardCreator(v);
                self.cardMap[v] = card;
                return card;
            },
            afterCardCreated: BI.bind(this.afterCardCreated, this),
            afterCardShow: BI.bind(this.afterCardShow, this)
        })
        if(o.defaultShowIndex !== false){
            this.setSelect(o.defaultShowIndex);
        }
    },

    afterCardCreated: function(v){
        var self = this;
        this.cardMap[v].on(BI.Controller.EVENT_CHANGE, function(type, value, obj){
            self.fireEvent(BI.Controller.EVENT_CHANGE, arguments);
            if(type ===  BI.Events.CLICK) {
                self.fireEvent(BI.Navigation.EVENT_CHANGE, obj);
            }
        })
        this.options.afterCardCreated.apply(this, arguments);
    },

    afterCardShow: function(v){
        this.showIndex = v;
        this.options.afterCardShow.apply(this, arguments);
    },

    populate: function(){
        var card = this.layout.getShowingCard();
        if(card){
            return card.populate.apply(card, arguments);
        }
    },

    setSelect: function(v){
        this.showIndex = v;
        if(!this.layout.isCardExisted(v)){
            var card = this.options.cardCreator(v);
            this.cardMap[v] = card;
            this.layout.addCardByName(v, card);
            this.afterCardCreated(v);
        }
        this.layout.showCardByName(v);
        BI.nextTick(BI.bind(this.afterCardShow, this, v));
    },

    getSelect: function(){
        return this.showIndex;
    },

    getSelectedCard: function(){
        if(BI.isKey(this.showIndex)){
            return this.cardMap[this.showIndex];
        }
    },

    /**
     * @override
     */
    setValue: function(v){
        var card = this.layout.getShowingCard();
        if(card){
            card.setValue(v);
        }
    },

    /**
     * @override
     */
    getValue: function(){
        var card = this.layout.getShowingCard();
        if(card){
            return card.getValue();
        }
    },

    empty: function(){
        this.layout.deleteAllCard();
        this.cardMap = {};
    },

    destroy: function(){
        BI.Navigation.superclass.destroy.apply(this, arguments);
    }
});
BI.Navigation.EVENT_CHANGE = "EVENT_CHANGE";

$.shortcut("bi.navigation", BI.Navigation);/**
 * 搜索逻辑控件
 *
 * Created by GUY on 2015/9/28.
 * @class BI.Searcher
 * @extends BI.Widget
 */

BI.Searcher = BI.inherit(BI.Widget, {
    _defaultConfig: function () {
        return BI.extend(BI.Searcher.superclass._defaultConfig.apply(this, arguments), {
            baseCls: "bi-searcher",
            lgap: 0,
            rgap: 0,
            tgap: 0,
            bgap: 0,
            vgap: 0,
            hgap: 0,

            isDefaultInit: false,
            isAutoSearch: true, //是否自动搜索
            isAutoSync: true, //是否自动同步数据, 即是否保持搜索面板和adapter面板状态值的统一
            chooseType: BI.ButtonGroup.CHOOSE_TYPE_SINGLE,

            //isAutoSearch为false时启用
            onSearch: function (op, callback) {
                callback([])
            },


            el: {
                type: "bi.search_editor"
            },

            popup: {
                type: "bi.searcher_view"
            },

            adapter: null,
            masker: { //masker层
                offset: {}
            }
        })
    },

    _init: function () {
        BI.Searcher.superclass._init.apply(this, arguments);
        var self = this, o = this.options;

        this.editor = BI.createWidget(o.el, {
            type: "bi.search_editor"
        });

        BI.createWidget({
            type: "bi.vertical",
            element: this,
            lgap: o.lgap,
            rgap: o.rgap,
            tgap: o.tgap,
            bgap: o.bgap,
            vgap: o.vgap,
            hgap: o.hgap,
            items: [this.editor]
        });
        o.isDefaultInit && (this._assertPopupView());

        var search = BI.debounce(BI.bind(this._search, this), BI.EVENT_RESPONSE_TIME, true);
        this.editor.on(BI.Controller.EVENT_CHANGE, function (type) {
            switch (type) {
                case BI.Events.STARTEDIT:
                    self._startSearch();
                    break;
                case BI.Events.EMPTY:
                    self._stopSearch();
                    break;
                case BI.Events.CHANGE:
                    search();
                    break;
                case BI.Events.PAUSE:
                    self._pauseSearch();
                    break;
            }
        })
    },

    _assertPopupView: function () {
        var self = this, o = this.options;
        if (!BI.Maskers.has(this.getName())) {
            this.popupView = BI.createWidget(o.popup, {
                type: "bi.searcher_view",
                chooseType: o.chooseType
            });
            BI.Maskers.create(this.getName(), o.adapter, BI.extend({
                container: this,
                render: this.popupView
            }, o.masker));

            this.popupView.on(BI.Controller.EVENT_CHANGE, function (type, value, obj) {
                self.fireEvent(BI.Controller.EVENT_CHANGE, arguments);
                if (type === BI.Events.CLICK) {
                    if (o.isAutoSync) {
                        var values = o.adapter && o.adapter.getValue();
                        if (!obj.isSelected()) {
                            o.adapter && o.adapter.setValue(BI.deepWithout(values, obj.getValue()));
                        } else {
                            switch (o.chooseType) {
                                case BI.ButtonGroup.CHOOSE_TYPE_SINGLE:
                                    o.adapter && o.adapter.setValue([obj.getValue()]);
                                    break;
                                case BI.ButtonGroup.CHOOSE_TYPE_MULTI:
                                    values.push(obj.getValue());
                                    o.adapter && o.adapter.setValue(values);
                                    break;
                            }
                        }
                    }
                    self.fireEvent(BI.Searcher.EVENT_CHANGE, value, obj);
                }
            });
            BI.nextTick(function () {
                self.fireEvent(BI.Searcher.EVENT_AFTER_INIT);
            });
        }
    },

    _startSearch: function () {
        this._assertPopupView();
        this._stop = false;
        this._isSearching = true;
        this.fireEvent(BI.Searcher.EVENT_START);
        this.popupView.startSearch && this.popupView.startSearch();
        //搜索前先清空dom
        BI.Maskers.get(this.getName()).empty();
        BI.nextTick(function (name) {
            BI.Maskers.show(name);
        }, this.getName());
    },

    _pauseSearch: function () {
        var o = this.options, name = this.getName();
        this._stop = true;
        BI.nextTick(function (name) {
            BI.Maskers.hide(name);
        }, this.getName());
        if (BI.Maskers.has(name) && this._isSearching === true) {
            this.popupView && this.popupView.pauseSearch && this.popupView.pauseSearch();
            this.fireEvent(BI.Searcher.EVENT_PAUSE);
        }
        this._isSearching = false;
    },

    _stopSearch: function () {
        var o = this.options, name = this.getName();
        this._stop = true;
        BI.Maskers.hide(name);
        if (BI.Maskers.has(name) && this._isSearching === true) {
            //搜索后清空dom
            BI.nextTick(function () {
                BI.Maskers.has(name) && BI.Maskers.get(name).empty();
            });
            this.popupView && this.popupView.stopSearch && this.popupView.stopSearch();
            this.fireEvent(BI.Searcher.EVENT_STOP);
        }
        this._isSearching = false;
    },

    _search: function () {
        var self = this, o = this.options, keyword = this.editor.getValue();
        if (keyword === "" || this._stop) {
            return;
        }
        if (o.isAutoSearch) {
            var items = (o.adapter.getItems && o.adapter.getItems()) || o.adapter.attr("items") || [];
            var finding = BI.Func.getSearchResult(items, keyword);
            var matched = finding.matched, finded = finding.finded;
            this.popupView.populate(finded, matched, keyword);
            o.isAutoSync && this.popupView.setValue(o.adapter.getValue());
            self.fireEvent(BI.Searcher.EVENT_SEARCHING);
            return;
        }
        this.popupView.loading && this.popupView.loading();
        o.onSearch({
            times: 1,
            keyword: keyword,
            selectedValues: o.adapter && o.adapter.getValue()
        }, function (searchResult, matchResult) {
            if (!self._stop) {
                var args = [].slice.call(arguments);
                if (args.length > 0) {
                    args.push(keyword);
                }
                BI.Maskers.show(self.getName());
                self.popupView.populate.apply(self.popupView, args);
                o.isAutoSync && self.popupView.setValue(o.adapter && o.adapter.getValue());
                self.popupView.loaded && self.popupView.loaded();
                self.fireEvent(BI.Searcher.EVENT_SEARCHING);
            }
        });
    },

    setAdapter: function (adapter) {
        this.options.adapter = adapter;
        BI.Maskers.remove(this.getName());
    },

    doSearch: function () {
        if (this.isSearching()) {
            this._search();
        }
    },

    stopSearch: function () {
        this._stopSearch();//先停止搜索，然后再去设置editor为空
        //important:停止搜索必须退出编辑状态,这里必须加上try(input框不显示时blur会抛异常)
        try {
            this.editor.blur();
        } catch (e) {
            if (!this.editor.blur) {
                throw new Error("editor没有实现blur方法");
            }
        } finally {
            this.editor.setValue("");
        }
    },

    isSearching: function () {
        return this._isSearching;
    },

    isViewVisible: function () {
        return this.editor.isEnabled() && BI.Maskers.isVisible(this.getName());
    },

    getView: function () {
        return this.popupView;
    },

    hasMatched: function () {
        this._assertPopupView();
        return this.popupView.hasMatched();
    },

    adjustHeight: function () {
        if (BI.Maskers.has(this.getName()) && BI.Maskers.get(this.getName()).isVisible()) {
            BI.Maskers.show(this.getName());
        }
    },

    adjustView: function () {
        this.isViewVisible() && BI.Maskers.show(this.getName());
    },

    setValue: function (v) {
        this._assertPopupView();
        this.popupView && this.popupView.setValue(v);
    },

    getKeyword: function () {
        return this.editor.getValue();
    },

    getKeywords: function () {
        return this.editor.getKeywords();
    },

    getValue: function () {
        var o = this.options;
        if (o.isAutoSync) {
            return o.adapter.getValue();
        }
        if (this.isSearching()) {
            return this.popupView.getValue();
        } else {
            return o.adapter.getValue();
        }
    },

    populate: function (result, searchResult, keyword) {
        var o = this.options;
        this._assertPopupView();
        this.popupView.populate.apply(this.popupView, arguments);
        if (o.isAutoSync) {
            this.popupView.setValue(o.adapter.getValue());
        }
    },

    empty: function () {
        this.popupView && this.popupView.empty();
    },

    destroy: function () {
        BI.Maskers.remove(this.getName());
        BI.Searcher.superclass.destroy.apply(this, arguments);
    }
});
BI.Searcher.EVENT_CHANGE = "EVENT_CHANGE";
BI.Searcher.EVENT_START = "EVENT_START";
BI.Searcher.EVENT_STOP = "EVENT_STOP";
BI.Searcher.EVENT_PAUSE = "EVENT_PAUSE";
BI.Searcher.EVENT_SEARCHING = "EVENT_SEARCHING";
BI.Searcher.EVENT_AFTER_INIT = "EVENT_AFTER_INIT";

$.shortcut("bi.searcher", BI.Searcher);/**
 *
 * 切换显示或隐藏面板
 *
 * Created by GUY on 2015/11/2.
 * @class BI.Switcher
 * @extends BI.Widget
 */
BI.Switcher = BI.inherit(BI.Widget, {
    _defaultConfig: function () {
        return BI.extend(BI.Switcher.superclass._defaultConfig.apply(this, arguments), {
            baseCls: "bi-switcher",
            direction: BI.Direction.Top,
            trigger: "click",
            toggle: true,
            el: {},
            popup: {},
            adapter: null,
            masker: {},
            switcherClass: "bi-switcher-popup",
            hoverClass: "bi-switcher-hover"
        })
    },

    _init: function () {
        BI.Switcher.superclass._init.apply(this, arguments);
        var self = this, o = this.options;
        this._initSwitcher();
        this._initPullDownAction();
        this.switcher.on(BI.Controller.EVENT_CHANGE, function (type, value, obj) {
            if (self.isEnabled() && this.isEnabled()) {
                if (type === BI.Events.EXPAND) {
                    self._popupView();
                }
                if (type === BI.Events.COLLAPSE) {
                    self._hideView();
                }
                if (type === BI.Events.EXPAND || type === BI.Events.COLLAPSE) {
                    self.fireEvent(BI.Controller.EVENT_CHANGE, arguments);
                }
                if (type === BI.Events.CLICK) {
                    self.fireEvent(BI.Switcher.EVENT_TRIGGER_CHANGE, value, obj);
                }
            }
        });

        this.element.hover(function () {
            if (self.isEnabled() && self.switcher.isEnabled()) {
                self.element.addClass(o.hoverClass);
            }
        }, function () {
            if (self.isEnabled() && self.switcher.isEnabled()) {
                self.element.removeClass(o.hoverClass);
            }
        });
        BI.createWidget({
            type: "bi.vertical",
            scrolly: false,
            element: this,
            items: [
                {el: this.switcher}
            ]
        });
        o.isDefaultInit && (this._assertPopupView());
    },

    _toggle: function () {
        this._assertPopupView();
        if (this.isExpanded()) {
            this._hideView();
        } else {
            if (this.isEnabled()) {
                this._popupView();
            }
        }
    },

    _initPullDownAction: function () {
        var self = this, o = this.options;
        var evs = this.options.trigger.split(",");
        BI.each(evs, function (i, e) {
            switch (e) {
                case "hover":
                    self.element[e](function (e) {
                        if (self.isEnabled() && self.switcher.isEnabled()) {
                            self._popupView();
                            self.fireEvent(BI.Controller.EVENT_CHANGE, BI.Events.EXPAND, '', self.switcher);
                            self.fireEvent(BI.Switcher.EVENT_EXPAND);
                        }
                    }, function () {
                        if (self.isEnabled() && self.switcher.isEnabled() && o.toggle) {
                            self._hideView();
                            self.fireEvent(BI.Controller.EVENT_CHANGE, BI.Events.COLLAPSE, '', self.switcher);
                            self.fireEvent(BI.Switcher.EVENT_COLLAPSE);
                        }
                    });
                    break;
                default :
                    if (e) {
                        self.element.off(e + "." + self.getName()).on(e + "." + self.getName(), BI.debounce(function (e) {
                            if (self.switcher.element.__isMouseInBounds__(e)) {
                                if (self.isEnabled() && self.switcher.isEnabled()) {
                                    o.toggle ? self._toggle() : self._popupView();
                                    if (self.isExpanded()) {
                                        self.fireEvent(BI.Controller.EVENT_CHANGE, BI.Events.EXPAND, '', self.switcher);
                                        self.fireEvent(BI.Switcher.EVENT_EXPAND);
                                    } else {
                                        self.fireEvent(BI.Controller.EVENT_CHANGE, BI.Events.COLLAPSE, '', self.switcher);
                                        self.fireEvent(BI.Switcher.EVENT_COLLAPSE);
                                    }
                                }
                            }
                        }, BI.EVENT_RESPONSE_TIME, true));
                    }
                    break;
            }
        })
    },

    _initSwitcher: function () {
        this.switcher = BI.createWidget(this.options.el);
    },

    _assertPopupView: function () {
        var self = this, o = this.options;
        if (!this._created) {
            this.popupView = BI.createWidget(o.popup, {
                type: "bi.button_group",
                element: o.adapter && BI.Maskers.create(this.getName(), o.adapter, BI.extend({container: this}, o.masker)),
                cls: "switcher-popup",
                layouts: [{
                    type: "bi.vertical",
                    hgap: 0,
                    vgap: 0
                }]
            });
            this.popupView.on(BI.Controller.EVENT_CHANGE, function (type, value, obj) {
                self.fireEvent(BI.Controller.EVENT_CHANGE, arguments);
                if (type === BI.Events.CLICK) {
                    self.fireEvent(BI.Switcher.EVENT_CHANGE, value, obj);
                }
            });
            if (o.direction !== BI.Direction.Custom && !o.adapter) {
                BI.createWidget({
                    type: "bi.vertical",
                    scrolly: false,
                    element: this,
                    items: [
                        {el: this.popupView}
                    ]
                });
            }
            this._created = true;
            BI.nextTick(function () {
                self.fireEvent(BI.Switcher.EVENT_AFTER_INIT);
            });
        }
    },

    _hideView: function () {
        this.fireEvent(BI.Switcher.EVENT_BEFORE_HIDEVIEW);
        var self = this, o = this.options;
        o.adapter ? BI.Maskers.hide(self.getName()) : (self.popupView && self.popupView.setVisible(false));
        BI.nextTick(function () {
            o.adapter ? BI.Maskers.hide(self.getName()) : (self.popupView && self.popupView.setVisible(false));
            self.element.removeClass(o.switcherClass);
            self.fireEvent(BI.Switcher.EVENT_AFTER_HIDEVIEW);
        });
    },

    _popupView: function () {
        var self = this, o = this.options;
        this._assertPopupView();
        this.fireEvent(BI.Switcher.EVENT_BEFORE_POPUPVIEW);
        o.adapter ? BI.Maskers.show(this.getName()) : self.popupView.setVisible(true);
        BI.nextTick(function (name) {
            o.adapter ? BI.Maskers.show(name) : self.popupView.setVisible(true);
            self.element.addClass(o.switcherClass);
            self.fireEvent(BI.Switcher.EVENT_AFTER_POPUPVIEW);
        }, this.getName());
    },

    populate: function (items) {
        this._assertPopupView();
        this.popupView.populate.apply(this.popupView, arguments);
        this.switcher.populate.apply(this.switcher, arguments);
    },

    setEnable: function (arg) {
        BI.Switcher.superclass.setEnable.apply(this, arguments);
        this.switcher && this.switcher.setEnable(arg);
        this.popupView && this.popupView.setEnable(arg);
        !arg && this._hideView();
    },

    setValue: function (v) {
        this._assertPopupView();
        this.switcher.setValue(v);
        this.popupView && this.popupView.setValue(v);
    },

    getValue: function () {
        this._assertPopupView();
        return this.popupView ? this.popupView.getValue() : [];
    },

    isViewVisible: function () {
        return this.isEnabled() && this.switcher.isEnabled() &&
            (this.options.adapter ? BI.Maskers.isVisible(this.getName()) : (this.popupView && this.popupView.isVisible()));
    },

    isExpanded: function () {
        return this.isViewVisible();
    },

    showView: function () {
        if (this.isEnabled() && this.switcher.isEnabled()) {
            this._popupView();
        }
    },

    hideView: function () {
        this._hideView();
    },

    getView: function () {
        return this.popupView;
    },

    adjustView: function () {
        this.isViewVisible() && BI.Maskers.show(this.getName());
    },

    doBehavior: function () {
        this._assertPopupView();
        this.popupView && this.popupView.doBehavior.apply(this.popupView, arguments);
    },

    getAllLeaves: function () {
        return this.popupView && this.popupView.getAllLeaves();
    },

    getNodeById: function (id) {
        if (this.switcher.attr("id") === id) {
            return this.switcher;
        }
        return this.popupView && this.popupView.getNodeById(id);
    },

    getNodeByValue: function (value) {
        if (this.switcher.getValue() === value) {
            return this.switcher;
        }
        return this.popupView && this.popupView.getNodeByValue(value);
    },

    empty: function () {
        this.popupView && this.popupView.empty();
    },

    destroy: function () {
        BI.Switcher.superclass.destroy.apply(this, arguments);
    }
});
BI.Switcher.EVENT_EXPAND = "EVENT_EXPAND";
BI.Switcher.EVENT_COLLAPSE = "EVENT_COLLAPSE";
BI.Switcher.EVENT_TRIGGER_CHANGE = "EVENT_TRIGGER_CHANGE";
BI.Switcher.EVENT_CHANGE = "EVENT_CHANGE";
BI.Switcher.EVENT_AFTER_INIT = "EVENT_AFTER_INIT";


BI.Switcher.EVENT_BEFORE_POPUPVIEW = "EVENT_BEFORE_POPUPVIEW";
BI.Switcher.EVENT_AFTER_POPUPVIEW = "EVENT_AFTER_POPUPVIEW";
BI.Switcher.EVENT_BEFORE_HIDEVIEW = "EVENT_BEFORE_HIDEVIEW";
BI.Switcher.EVENT_AFTER_HIDEVIEW = "EVENT_AFTER_HIDEVIEW";

$.shortcut("bi.switcher", BI.Switcher);/**
 * Created by GUY on 2015/6/26.
 */

BI.Tab = BI.inherit(BI.Widget, {
    _defaultConfig: function () {
        return BI.extend(BI.Tab.superclass._defaultConfig.apply(this, arguments), {
            baseCls: "bi-tab",
            direction: "top",//top, bottom, left, right, custom
            logic: {
                dynamic: false
            },
            defaultShowIndex: 0,
            tab: false,
            cardCreator: function (v) {
                return BI.createWidget();
            }
        })
    },

    _init: function () {
        BI.Tab.superclass._init.apply(this, arguments);
        var self = this, o = this.options;
        if (BI.isObject(o.tab)) {
            this.tab = BI.createWidget(this.options.tab, {type: "bi.button_group"});
            this.tab.on(BI.Controller.EVENT_CHANGE, function (type, value, obj) {
                self.fireEvent(BI.Controller.EVENT_CHANGE, arguments);
            })
        }
        this.cardMap = {};
        this.layout = BI.createWidget({
            type: "bi.card"
        });

        BI.createWidget(BI.extend({
            element: this
        }, BI.LogicFactory.createLogic(BI.LogicFactory.createLogicTypeByDirection(o.direction), BI.extend({}, o.logic, {
            items: BI.LogicFactory.createLogicItemsByDirection(o.direction, this.tab, this.layout)
        }))));

        var listener = new BI.ShowListener({
            eventObj: this.tab,
            cardLayout: this.layout,
            cardCreator: function (v) {
                var card = o.cardCreator.apply(self, arguments);
                self.cardMap[v] = card;
                return card;
            },
            afterCardShow: function (v) {
                self.curr = v;
            }
        });
        listener.on(BI.ShowListener.EVENT_CHANGE, function (value) {
            self.fireEvent(BI.Tab.EVENT_CHANGE, value, self);
        });
    },

    _assertCard: function (v) {
        if (!this.layout.isCardExisted(v)) {
            var card = this.options.cardCreator(v);
            this.cardMap[v] = card;
            this.layout.addCardByName(v, card);
        }
    },

    mounted: function () {
        var o = this.options;
        if (o.defaultShowIndex !== false) {
            this.setSelect(o.defaultShowIndex);
        }
    },

    setSelect: function (v) {
        this.tab && this.tab.setValue(v);
        this._assertCard(v);
        this.layout.showCardByName(v);
        if (this.curr !== v) {
            this.curr = v;
        }
    },

    getSelect: function () {
        return this.curr;
    },

    getSelectedTab: function () {
        return this.layout.getShowingCard();
    },

    getTab: function (v) {
        this._assertCard(v);
        return this.layout.getCardByName(v);
    },

    setValue: function (v) {
        var card = this.layout.getShowingCard();
        if (card) {
            card.setValue(v);
        }
    },

    getValue: function () {
        var card = this.layout.getShowingCard();
        if (card) {
            return card.getValue();
        }
    },

    populate: function () {
        var card = this.layout.getShowingCard();
        if (card) {
            return card.populate && card.populate.apply(card, arguments);
        }
    },

    empty: function () {
        this.layout.deleteAllCard();
        this.cardMap = {};
    },

    destroy: function () {
        this.cardMap = {};
        BI.Tab.superclass.destroy.apply(this, arguments);
    }
});
BI.Tab.EVENT_CHANGE = "EVENT_CHANGE";

$.shortcut("bi.tab", BI.Tab);/**
 * 表示当前对象
 *
 * Created by GUY on 2015/9/7.
 * @class BI.EL
 * @extends BI.Widget
 */
BI.EL = BI.inherit(BI.Widget, {
    _defaultConfig: function () {
        return BI.extend(BI.EL.superclass._defaultConfig.apply(this, arguments), {
            baseCls: "bi-el",
            el: {},
            layout: {}
        });
    },
    _init: function () {
        BI.EL.superclass._init.apply(this, arguments);
        var self = this, o = this.options;
        this.ele = BI.createWidget(o.el);
        BI.createWidget(o.layout, {
            type: "bi.adaptive",
            element: this,
            items: [this.ele]
        });
        this.ele.on(BI.Controller.EVENT_CHANGE, function () {
            self.fireEvent(BI.Controller.EVENT_CHANGE, arguments);
        })
    },

    setValue: function (v) {
        this.ele.setValue(v);
    },

    getValue: function () {
        return this.ele.getValue();
    },

    populate: function () {
        this.ele.populate.apply(this, arguments);
    }
});
$.shortcut('bi.el', BI.EL);/**
 * 选色控件
 *
 * Created by GUY on 2015/11/16.
 * @class BI.Farbtastic
 * @extends BI.Widget
 */
BI.Farbtastic = BI.inherit(BI.Widget, {

    _defaultConfig: function () {
        return BI.extend(BI.Farbtastic.superclass._defaultConfig.apply(this, arguments), {
            baseCls: "bi-farbtastic",
            width: 195,
            height: 195
        })
    },

    _init: function () {
        BI.Farbtastic.superclass._init.apply(this, arguments);
        var self = this;
        
        

        this.farbtastic = $.farbtastic(this.element, function (v) {
            self.fireEvent(BI.Farbtastic.EVENT_CHANGE, self.getValue(), self);
        });
    },

    setValue: function (color) {
        this.farbtastic.setColor(color);
    },

    getValue: function () {
        return this.farbtastic.color;
    }
});
BI.Farbtastic.EVENT_CHANGE = "Farbtastic.EVENT_CHANGE";
$.shortcut("bi.farbtastic", BI.Farbtastic);(function (mod) {
    mod(CodeMirror);
})(function (CodeMirror) {
    var Pos = CodeMirror.Pos;

    function forEach(arr, f) {
        for (var i = 0, e = arr.length; i < e; ++i) f(arr[i]);
    }

    function arrayContains(arr, item) {
        if (!Array.prototype.indexOf) {
            var i = arr.length;
            while (i--) {
                if (arr[i] === item) {
                    return true;
                }
            }
            return false;
        }
        return arr.indexOf(item) != -1;
    }

    function scriptHint(editor, keywords, getToken, options) {
        // Find the token at the cursor
        var cur = editor.getCursor(), token = getToken(editor, cur);
        if (/\b(?:string)\b/.test(token.type)) {
            return;
        }
        token.state = CodeMirror.innerMode(editor.getMode(), token.state).state;

        if (!/^[\w$_]*$/.test(token.string)) {
            token = {
                start: cur.ch, end: cur.ch, string: "", state: token.state,
                type: token.string == "." ? "property" : null
            };
        } else if (token.end > cur.ch) {
            token.end = cur.ch;
            token.string = token.string.slice(0, cur.ch - token.start);
        }

        var tprop = token;
        // If it is a property, find out what it is a property of.
        while (tprop.type == "property") {
            tprop = getToken(editor, Pos(cur.line, tprop.start));
            if (tprop.string != ".") return;
            tprop = getToken(editor, Pos(cur.line, tprop.start));
            if (!context) var context = [];
            context.push(tprop);
        }
        return {
            list: getCompletions(token, context, keywords, options),
            from: Pos(cur.line, token.start),
            to: Pos(cur.line, token.end)
        };
    }

    function getFormulaKeywords() {
        return FormulaCollections;
    }

    function formulaHint(editor, options) {
        return scriptHint(editor, getFormulaKeywords(),
            function (e, cur) {
                return e.getTokenAt(cur);
            },
            options);
    };
    CodeMirror.registerHelper("hint", "formula", formulaHint);

    function getCompletions(token, context, keywords, options) {
        var found = [], start = token.string;
        if (!start) {
            return found;
        }
        function maybeAdd(str) {
            if (str.lastIndexOf(start, 0) == 0 && !arrayContains(found, str)) {
                found.push(str);
            }
        }

        if (context && context.length) {
            context.pop();
        } else {
            forEach(keywords, maybeAdd);
        }
        return found;
    }
});(function (mod) {
    mod(CodeMirror);
})(function (CodeMirror) {
    "use strict";

    CodeMirror.defineMode('formula', function () {
        function wordObj(words) {
            var o = {};
            for (var i = 0, e = words.length; i < e; ++i) o[words[i]] = true;
            return o;
        }

        var atoms = wordObj(['false', 'true']);
        var keywords = wordObj(FormulaCollections);

        function tokenBase(stream, state) {
            if (stream.eatSpace()) {
                return null;
            }
            var ch = stream.next();

            if (ch === '"' || ch === '\'') {
                nextUntilUnescaped(stream, ch);
                return "string";
            }
            if (/[\[\],\(\)]/.test(ch)) {
                return 'bracket';
            }

            // richie：暂时不需要解析操作符号
            //if (/[+\-*\/=<>!&|]/.test(ch)) {
            //  return 'operator';
            //}
            //if (/\d|\d./.test(ch)) {
            //    stream.eatWhile(/\d|\./);
            //    if (stream.eol() || !/\w/.test(stream.peek())) {
            //        return 'number';
            //    }
            //}



            stream.eatWhile(/[\w-]/);
            var word = stream.current();
            if (atoms.hasOwnProperty(word)) {
                return "atom";
            }
            if (keywords.hasOwnProperty(word)) {
                return "keyword";
            }
            return null;
        }

        function nextUntilUnescaped(stream, end) {
            var escaped = false, next;
            while ((next = stream.next()) != null) {
                if (next === end && !escaped) {
                    return false;
                }
                escaped = !escaped && next === "\\";
            }
            return escaped;
        }

        function tokenize(stream, state) {
            return (state.tokens[0] || tokenBase)(stream, state);
        }

        return {
            startState: function () {
                return {tokens: []};
            },
            token: function (stream, state) {
                return tokenize(stream, state);
            },
            fold: "brace"
        };
    });
    CodeMirror.defineMIME("text/fx-formula", "formula");
});// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: http://codemirror.net/LICENSE

(function (mod) {
    mod(CodeMirror);
})(function (CodeMirror) {
    "use strict";

    var HINT_ELEMENT_CLASS = "CodeMirror-hint";
    var ACTIVE_HINT_ELEMENT_CLASS = "CodeMirror-hint-active";

    // This is the old interface, kept around for now to stay
    // backwards-compatible.
    CodeMirror.showHint = function (cm, getHints, options) {
        if (!getHints) return cm.showHint(options);
        if (options && options.async) getHints.async = true;
        var newOpts = {hint: getHints};
        if (options) for (var prop in options) newOpts[prop] = options[prop];
        return cm.showHint(newOpts);
    };

    CodeMirror.defineExtension("showHint", function (options) {
        // We want a single cursor position.
        if (this.listSelections().length > 1 || this.somethingSelected()) return;

        if (this.state.completionActive) this.state.completionActive.close();
        var completion = this.state.completionActive = new Completion(this, options);
        if (!completion.options.hint) return;

        CodeMirror.signal(this, "startCompletion", this);
        completion.update(true);
    });

    function Completion(cm, options) {
        this.cm = cm;
        this.options = this.buildOptions(options);
        this.widget = null;
        this.debounce = 0;
        this.tick = 0;
        this.startPos = this.cm.getCursor();
        this.startLen = this.cm.getLine(this.startPos.line).length;

        var self = this;
        cm.on("cursorActivity", this.activityFunc = function () {
            self.cursorActivity();
        });
    }

    var requestAnimationFrame = window.requestAnimationFrame || function (fn) {
            return setTimeout(fn, 1000 / 60);
        };
    var cancelAnimationFrame = window.cancelAnimationFrame || clearTimeout;

    Completion.prototype = {
        close: function () {
            if (!this.active()) return;
            this.cm.state.completionActive = null;
            this.tick = null;
            this.cm.off("cursorActivity", this.activityFunc);

            if (this.widget && this.data) CodeMirror.signal(this.data, "close");
            if (this.widget) this.widget.close();
            CodeMirror.signal(this.cm, "endCompletion", this.cm);
        },

        active: function () {
            return this.cm.state.completionActive == this;
        },

        pick: function (data, i) {
            var completion = data.list[i];
            if (completion.hint) completion.hint(this.cm, data, completion);
            else {
                this.cm.replaceRange(getText(completion), completion.from || data.from,
                    completion.to || data.to, "complete");
                var to = this.cm.getCursor();
                this.cm.markText(completion.from || data.from, to, {className: "#function", atomic: true});
                this.cm.replaceSelection("() ");
                to = this.cm.getCursor();
                to.ch = to.ch - 2;
                this.cm.setCursor(to);
                this.cm.focus();
            }
            CodeMirror.signal(data, "pick", completion);
            this.close();
        },

        cursorActivity: function () {
            if (this.debounce) {
                cancelAnimationFrame(this.debounce);
                this.debounce = 0;
            }

            var pos = this.cm.getCursor(), line = this.cm.getLine(pos.line);
            if (pos.line != this.startPos.line || line.length - pos.ch != this.startLen - this.startPos.ch ||
                pos.ch < this.startPos.ch || this.cm.somethingSelected() ||
                (pos.ch && this.options.closeCharacters.test(line.charAt(pos.ch - 1)))) {
                this.close();
            } else {
                var self = this;
                this.debounce = requestAnimationFrame(function () {
                    self.update();
                });
                if (this.widget) this.widget.disable();
            }
        },

        update: function (first) {
            if (this.tick == null) return;
            if (this.data) CodeMirror.signal(this.data, "update");
            if (!this.options.hint.async) {
                this.finishUpdate(this.options.hint(this.cm, this.options), first);
            } else {
                var myTick = ++this.tick, self = this;
                this.options.hint(this.cm, function (data) {
                    if (self.tick == myTick) self.finishUpdate(data, first);
                }, this.options);
            }
        },

        finishUpdate: function (data, first) {
            this.data = data;

            var picked = (this.widget && this.widget.picked) || (first && this.options.completeSingle);
            if (this.widget) this.widget.close();
            if (data && data.list.length) {
                if (picked && data.list.length == 1) {
                    this.pick(data, 0);
                } else {
                    this.widget = new Widget(this, data);
                    CodeMirror.signal(data, "shown");
                }
            }
        },

        buildOptions: function (options) {
            var editor = this.cm.options.hintOptions;
            var out = {};
            for (var prop in defaultOptions) out[prop] = defaultOptions[prop];
            if (editor) for (var prop in editor)
                if (editor[prop] !== undefined) out[prop] = editor[prop];
            if (options) for (var prop in options)
                if (options[prop] !== undefined) out[prop] = options[prop];
            return out;
        }
    };

    function getText(completion) {
        if (typeof completion == "string") return completion;
        else return completion.text;
    }

    function buildKeyMap(completion, handle) {
        var baseMap = {
            Up: function () {
                handle.moveFocus(-1);
            },
            Down: function () {
                handle.moveFocus(1);
            },
            PageUp: function () {
                handle.moveFocus(-handle.menuSize() + 1, true);
            },
            PageDown: function () {
                handle.moveFocus(handle.menuSize() - 1, true);
            },
            Home: function () {
                handle.setFocus(0);
            },
            End: function () {
                handle.setFocus(handle.length - 1);
            },
            Enter: handle.pick,
            Tab: handle.pick,
            Esc: handle.close
        };
        var custom = completion.options.customKeys;
        var ourMap = custom ? {} : baseMap;

        function addBinding(key, val) {
            var bound;
            if (typeof val != "string")
                bound = function (cm) {
                    return val(cm, handle);
                };
            // This mechanism is deprecated
            else if (baseMap.hasOwnProperty(val))
                bound = baseMap[val];
            else
                bound = val;
            ourMap[key] = bound;
        }

        if (custom)
            for (var key in custom) if (custom.hasOwnProperty(key))
                addBinding(key, custom[key]);
        var extra = completion.options.extraKeys;
        if (extra)
            for (var key in extra) if (extra.hasOwnProperty(key))
                addBinding(key, extra[key]);
        return ourMap;
    }

    function getHintElement(hintsElement, el) {
        while (el && el != hintsElement) {
            if (el.nodeName.toUpperCase() === "LI" && el.parentNode == hintsElement) return el;
            el = el.parentNode;
        }
    }

    function Widget(completion, data) {
        this.completion = completion;
        this.data = data;
        this.picked = false;
        var widget = this, cm = completion.cm;

        var hints = this.hints = document.createElement("ul");
        hints.className = "CodeMirror-hints";
        this.selectedHint = data.selectedHint || 0;

        var completions = data.list;
        for (var i = 0; i < completions.length; ++i) {
            var elt = hints.appendChild(document.createElement("li")), cur = completions[i];
            var className = HINT_ELEMENT_CLASS + (i != this.selectedHint ? "" : " " + ACTIVE_HINT_ELEMENT_CLASS);
            if (cur.className != null) className = cur.className + " " + className;
            elt.className = className;
            if (cur.render) cur.render(elt, data, cur);
            else elt.appendChild(document.createTextNode(cur.displayText || getText(cur)));
            elt.hintId = i;
        }

        var pos = cm.cursorCoords(completion.options.alignWithWord ? data.from : null);
        var left = pos.left, top = pos.bottom, below = true;
        hints.style.left = left + "px";
        hints.style.top = top + "px";
        // If we're at the edge of the screen, then we want the menu to appear on the left of the cursor.
        var winW = window.innerWidth || Math.max(document.body.offsetWidth, document.documentElement.offsetWidth);
        var winH = window.innerHeight || Math.max(document.body.offsetHeight, document.documentElement.offsetHeight);
        (completion.options.container || document.body).appendChild(hints);
        var box = hints.getBoundingClientRect(), overlapY = box.bottom - winH;
        if (overlapY > 0) {
            var height = box.bottom - box.top, curTop = pos.top - (pos.bottom - box.top);
            if (curTop - height > 0) { // Fits above cursor
                hints.style.top = (top = pos.top - height) + "px";
                below = false;
            } else if (height > winH) {
                hints.style.height = (winH - 5) + "px";
                hints.style.top = (top = pos.bottom - box.top) + "px";
                var cursor = cm.getCursor();
                if (data.from.ch != cursor.ch) {
                    pos = cm.cursorCoords(cursor);
                    hints.style.left = (left = pos.left) + "px";
                    box = hints.getBoundingClientRect();
                }
            }
        }
        var overlapX = box.right - winW;
        if (overlapX > 0) {
            if (box.right - box.left > winW) {
                hints.style.width = (winW - 5) + "px";
                overlapX -= (box.right - box.left) - winW;
            }
            hints.style.left = (left = pos.left - overlapX) + "px";
        }

        cm.addKeyMap(this.keyMap = buildKeyMap(completion, {
            moveFocus: function (n, avoidWrap) {
                widget.changeActive(widget.selectedHint + n, avoidWrap);
            },
            setFocus: function (n) {
                widget.changeActive(n);
            },
            menuSize: function () {
                return widget.screenAmount();
            },
            length: completions.length,
            close: function () {
                completion.close();
            },
            pick: function () {
                widget.pick();
            },
            data: data
        }));

        if (completion.options.closeOnUnfocus) {
            var closingOnBlur;
            cm.on("blur", this.onBlur = function () {
                closingOnBlur = setTimeout(function () {
                    completion.close();
                }, 100);
            });
            cm.on("focus", this.onFocus = function () {
                clearTimeout(closingOnBlur);
            });
        }

        var startScroll = cm.getScrollInfo();
        cm.on("scroll", this.onScroll = function () {
            var curScroll = cm.getScrollInfo(), editor = cm.getWrapperElement().getBoundingClientRect();
            var newTop = top + startScroll.top - curScroll.top;
            var point = newTop - (window.pageYOffset || (document.documentElement || document.body).scrollTop);
            if (!below) point += hints.offsetHeight;
            if (point <= editor.top || point >= editor.bottom) return completion.close();
            hints.style.top = newTop + "px";
            hints.style.left = (left + startScroll.left - curScroll.left) + "px";
        });

        CodeMirror.on(hints, "dblclick", function (e) {
            var t = getHintElement(hints, e.target || e.srcElement);
            if (t && t.hintId != null) {
                widget.changeActive(t.hintId);
                widget.pick();
            }
        });

        CodeMirror.on(hints, "click", function (e) {
            var t = getHintElement(hints, e.target || e.srcElement);
            if (t && t.hintId != null) {
                widget.changeActive(t.hintId);
                if (completion.options.completeOnSingleClick) widget.pick();
            }
        });

        CodeMirror.on(hints, "mousedown", function () {
            setTimeout(function () {
                cm.focus();
            }, 20);
        });

        CodeMirror.signal(data, "select", completions[0], hints.firstChild);
        return true;
    }

    Widget.prototype = {
        close: function () {
            if (this.completion.widget != this) return;
            this.completion.widget = null;
            this.hints.parentNode.removeChild(this.hints);
            this.completion.cm.removeKeyMap(this.keyMap);

            var cm = this.completion.cm;
            if (this.completion.options.closeOnUnfocus) {
                cm.off("blur", this.onBlur);
                cm.off("focus", this.onFocus);
            }
            cm.off("scroll", this.onScroll);
        },

        disable: function () {
            this.completion.cm.removeKeyMap(this.keyMap);
            var widget = this;
            this.keyMap = {
                Enter: function () {
                    widget.picked = true;
                }
            };
            this.completion.cm.addKeyMap(this.keyMap);
        },

        pick: function () {
            this.completion.pick(this.data, this.selectedHint);
        },

        changeActive: function (i, avoidWrap) {
            if (i >= this.data.list.length)
                i = avoidWrap ? this.data.list.length - 1 : 0;
            else if (i < 0)
                i = avoidWrap ? 0 : this.data.list.length - 1;
            if (this.selectedHint == i) return;
            var node = this.hints.childNodes[this.selectedHint];
            node.className = node.className.replace(" " + ACTIVE_HINT_ELEMENT_CLASS, "");
            node = this.hints.childNodes[this.selectedHint = i];
            node.className += " " + ACTIVE_HINT_ELEMENT_CLASS;
            if (node.offsetTop < this.hints.scrollTop)
                this.hints.scrollTop = node.offsetTop - 3;
            else if (node.offsetTop + node.offsetHeight > this.hints.scrollTop + this.hints.clientHeight)
                this.hints.scrollTop = node.offsetTop + node.offsetHeight - this.hints.clientHeight + 3;
            CodeMirror.signal(this.data, "select", this.data.list[this.selectedHint], node);
        },

        screenAmount: function () {
            return Math.floor(this.hints.clientHeight / this.hints.firstChild.offsetHeight) || 1;
        }
    };

    CodeMirror.registerHelper("hint", "auto", function (cm, options) {
        var helpers = cm.getHelpers(cm.getCursor(), "hint"), words;
        if (helpers.length) {
            for (var i = 0; i < helpers.length; i++) {
                var cur = helpers[i](cm, options);
                if (cur && cur.list.length) return cur;
            }
        } else if (words = cm.getHelper(cm.getCursor(), "hintWords")) {
            if (words) return CodeMirror.hint.fromList(cm, {words: words});
        } else if (CodeMirror.hint.anyword) {
            return CodeMirror.hint.anyword(cm, options);
        }
    });

    CodeMirror.registerHelper("hint", "fromList", function (cm, options) {
        var cur = cm.getCursor(), token = cm.getTokenAt(cur);
        var found = [];
        for (var i = 0; i < options.words.length; i++) {
            var word = options.words[i];
            if (word.slice(0, token.string.length) == token.string)
                found.push(word);
        }

        if (found.length) return {
            list: found,
            from: CodeMirror.Pos(cur.line, token.start),
            to: CodeMirror.Pos(cur.line, token.end)
        };
    });

    CodeMirror.commands.autocomplete = CodeMirror.showHint;

    var defaultOptions = {
        hint: CodeMirror.hint.auto,
        completeSingle: true,
        alignWithWord: true,
        closeCharacters: /[\s()\[\]{};:>,]/,
        closeOnUnfocus: true,
        completeOnSingleClick: true,
        container: null,
        customKeys: null,
        extraKeys: null
    };

    CodeMirror.defineOption("hintOptions", null);
});// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: http://codemirror.net/LICENSE

// This is CodeMirror (http://codemirror.net), a code editor
// implemented in JavaScript on top of the browser's DOM.
//
// You can find some technical background for some of the code below
// at http://marijnhaverbeke.nl/blog/#cm-internals .

(function(mod) {
    this.CodeMirror = mod();
})(function() {
  "use strict";

  // BROWSER SNIFFING

  // Kludges for bugs and behavior differences that can't be feature
  // detected are enabled based on userAgent etc sniffing.

  var gecko = /gecko\/\d/i.test(navigator.userAgent);
  var ie_upto10 = /MSIE \d/.test(navigator.userAgent);
  var ie_11up = /Trident\/(?:[7-9]|\d{2,})\..*rv:(\d+)/.exec(navigator.userAgent);
  var ie = ie_upto10 || ie_11up;
  var ie_version = ie && (ie_upto10 ? document.documentMode || 6 : ie_11up[1]);
  var webkit = /WebKit\//.test(navigator.userAgent);
  var qtwebkit = webkit && /Qt\/\d+\.\d+/.test(navigator.userAgent);
  var chrome = /Chrome\//.test(navigator.userAgent);
  var presto = /Opera\//.test(navigator.userAgent);
  var safari = /Apple Computer/.test(navigator.vendor);
  var mac_geMountainLion = /Mac OS X 1\d\D([8-9]|\d\d)\D/.test(navigator.userAgent);
  var phantom = /PhantomJS/.test(navigator.userAgent);

  var ios = /AppleWebKit/.test(navigator.userAgent) && /Mobile\/\w+/.test(navigator.userAgent);
  // This is woefully incomplete. Suggestions for alternative methods welcome.
  var mobile = ios || /Android|webOS|BlackBerry|Opera Mini|Opera Mobi|IEMobile/i.test(navigator.userAgent);
  var mac = ios || /Mac/.test(navigator.platform);
  var windows = /win/i.test(navigator.platform);

  var presto_version = presto && navigator.userAgent.match(/Version\/(\d*\.\d*)/);
  if (presto_version) presto_version = Number(presto_version[1]);
  if (presto_version && presto_version >= 15) { presto = false; webkit = true; }
  // Some browsers use the wrong event properties to signal cmd/ctrl on OS X
  var flipCtrlCmd = mac && (qtwebkit || presto && (presto_version == null || presto_version < 12.11));
  var captureRightClick = gecko || (ie && ie_version >= 9);

  // Optimize some code when these features are not used.
  var sawReadOnlySpans = false, sawCollapsedSpans = false;

  // EDITOR CONSTRUCTOR

  // A CodeMirror instance represents an editor. This is the object
  // that user code is usually dealing with.

  function CodeMirror(place, options) {
    if (!(this instanceof CodeMirror)) return new CodeMirror(place, options);

    this.options = options = options ? copyObj(options) : {};
    // Determine effective options based on given values and defaults.
    copyObj(defaults, options, false);
    setGuttersForLineNumbers(options);

    var doc = options.value;
    if (typeof doc == "string") doc = new Doc(doc, options.mode);
    this.doc = doc;

    var input = new CodeMirror.inputStyles[options.inputStyle](this);
    var display = this.display = new Display(place, doc, input);
    display.wrapper.CodeMirror = this;
    updateGutters(this);
    themeChanged(this);
    if (options.lineWrapping)
      this.display.wrapper.className += " CodeMirror-wrap";
    if (options.autofocus && !mobile) display.input.focus();
    initScrollbars(this);

    this.state = {
      keyMaps: [],  // stores maps added by addKeyMap
      overlays: [], // highlighting overlays, as added by addOverlay
      modeGen: 0,   // bumped when mode/overlay changes, used to invalidate highlighting info
      overwrite: false,
      delayingBlurEvent: false,
      focused: false,
      suppressEdits: false, // used to disable editing during key handlers when in readOnly mode
      pasteIncoming: false, cutIncoming: false, // help recognize paste/cut edits in input.poll
      draggingText: false,
      highlight: new Delayed(), // stores highlight worker timeout
      keySeq: null,  // Unfinished key sequence
      specialChars: null
    };

    var cm = this;

    // Override magic textarea content restore that IE sometimes does
    // on our hidden textarea on reload
    if (ie && ie_version < 11) setTimeout(function() { cm.display.input.reset(true); }, 20);

    registerEventHandlers(this);
    ensureGlobalHandlers();

    startOperation(this);
    this.curOp.forceUpdate = true;
    attachDoc(this, doc);

    if ((options.autofocus && !mobile) || cm.hasFocus())
      setTimeout(bind(onFocus, this), 20);
    else
      onBlur(this);

    for (var opt in optionHandlers) if (optionHandlers.hasOwnProperty(opt))
      optionHandlers[opt](this, options[opt], Init);
    maybeUpdateLineNumberWidth(this);
    if (options.finishInit) options.finishInit(this);
    for (var i = 0; i < initHooks.length; ++i) initHooks[i](this);
    endOperation(this);
    // Suppress optimizelegibility in Webkit, since it breaks text
    // measuring on line wrapping boundaries.
    if (webkit && options.lineWrapping &&
        getComputedStyle(display.lineDiv).textRendering == "optimizelegibility")
      display.lineDiv.style.textRendering = "auto";
  }

  // DISPLAY CONSTRUCTOR

  // The display handles the DOM integration, both for input reading
  // and content drawing. It holds references to DOM nodes and
  // display-related state.

  function Display(place, doc, input) {
    var d = this;
    this.input = input;

    // Covers bottom-right square when both scrollbars are present.
    d.scrollbarFiller = elt("div", null, "CodeMirror-scrollbar-filler");
    d.scrollbarFiller.setAttribute("cm-not-content", "true");
    // Covers bottom of gutter when coverGutterNextToScrollbar is on
    // and h scrollbar is present.
    d.gutterFiller = elt("div", null, "CodeMirror-gutter-filler");
    d.gutterFiller.setAttribute("cm-not-content", "true");
    // Will contain the actual code, positioned to cover the viewport.
    d.lineDiv = elt("div", null, "CodeMirror-code");
    // Elements are added to these to represent selection and cursors.
    d.selectionDiv = elt("div", null, null, "position: relative; z-index: 1");
    d.cursorDiv = elt("div", null, "CodeMirror-cursors");
    // A visibility: hidden element used to find the size of things.
    d.measure = elt("div", null, "CodeMirror-measure");
    // When lines outside of the viewport are measured, they are drawn in this.
    d.lineMeasure = elt("div", null, "CodeMirror-measure");
    // Wraps everything that needs to exist inside the vertically-padded coordinate system
    d.lineSpace = elt("div", [d.measure, d.lineMeasure, d.selectionDiv, d.cursorDiv, d.lineDiv],
                      null, "position: relative; outline: none");
    // Moved around its parent to cover visible view.
    d.mover = elt("div", [elt("div", [d.lineSpace], "CodeMirror-lines")], null, "position: relative");
    // Set to the height of the document, allowing scrolling.
    d.sizer = elt("div", [d.mover], "CodeMirror-sizer");
    d.sizerWidth = null;
    // Behavior of elts with overflow: auto and padding is
    // inconsistent across browsers. This is used to ensure the
    // scrollable area is big enough.
    d.heightForcer = elt("div", null, null, "position: absolute; height: " + scrollerGap + "px; width: 1px;");
    // Will contain the gutters, if any.
    d.gutters = elt("div", null, "CodeMirror-gutters");
    d.lineGutter = null;
    // Actual scrollable element.
    d.scroller = elt("div", [d.sizer, d.heightForcer, d.gutters], "CodeMirror-scroll");
    d.scroller.setAttribute("tabIndex", "-1");
    // The element in which the editor lives.
    d.wrapper = elt("div", [d.scrollbarFiller, d.gutterFiller, d.scroller], "CodeMirror");

    // Work around IE7 z-index bug (not perfect, hence IE7 not really being supported)
    if (ie && ie_version < 8) { d.gutters.style.zIndex = -1; d.scroller.style.paddingRight = 0; }
    if (!webkit && !(gecko && mobile)) d.scroller.draggable = true;

    if (place) {
      if (place.appendChild) place.appendChild(d.wrapper);
      else place(d.wrapper);
    }

    // Current rendered range (may be bigger than the view window).
    d.viewFrom = d.viewTo = doc.first;
    d.reportedViewFrom = d.reportedViewTo = doc.first;
    // Information about the rendered lines.
    d.view = [];
    d.renderedView = null;
    // Holds info about a single rendered line when it was rendered
    // for measurement, while not in view.
    d.externalMeasured = null;
    // Empty space (in pixels) above the view
    d.viewOffset = 0;
    d.lastWrapHeight = d.lastWrapWidth = 0;
    d.updateLineNumbers = null;

    d.nativeBarWidth = d.barHeight = d.barWidth = 0;
    d.scrollbarsClipped = false;

    // Used to only resize the line number gutter when necessary (when
    // the amount of lines crosses a boundary that makes its width change)
    d.lineNumWidth = d.lineNumInnerWidth = d.lineNumChars = null;
    // Set to true when a non-horizontal-scrolling line widget is
    // added. As an optimization, line widget aligning is skipped when
    // this is false.
    d.alignWidgets = false;

    d.cachedCharWidth = d.cachedTextHeight = d.cachedPaddingH = null;

    // Tracks the maximum line length so that the horizontal scrollbar
    // can be kept static when scrolling.
    d.maxLine = null;
    d.maxLineLength = 0;
    d.maxLineChanged = false;

    // Used for measuring wheel scrolling granularity
    d.wheelDX = d.wheelDY = d.wheelStartX = d.wheelStartY = null;

    // True when shift is held down.
    d.shift = false;

    // Used to track whether anything happened since the context menu
    // was opened.
    d.selForContextMenu = null;

    d.activeTouch = null;

    input.init(d);
  }

  // STATE UPDATES

  // Used to get the editor into a consistent state again when options change.

  function loadMode(cm) {
    cm.doc.mode = CodeMirror.getMode(cm.options, cm.doc.modeOption);
    resetModeState(cm);
  }

  function resetModeState(cm) {
    cm.doc.iter(function(line) {
      if (line.stateAfter) line.stateAfter = null;
      if (line.styles) line.styles = null;
    });
    cm.doc.frontier = cm.doc.first;
    startWorker(cm, 100);
    cm.state.modeGen++;
    if (cm.curOp) regChange(cm);
  }

  function wrappingChanged(cm) {
    if (cm.options.lineWrapping) {
      addClass(cm.display.wrapper, "CodeMirror-wrap");
      cm.display.sizer.style.minWidth = "";
      cm.display.sizerWidth = null;
    } else {
      rmClass(cm.display.wrapper, "CodeMirror-wrap");
      findMaxLine(cm);
    }
    estimateLineHeights(cm);
    regChange(cm);
    clearCaches(cm);
    setTimeout(function(){updateScrollbars(cm);}, 100);
  }

  // Returns a function that estimates the height of a line, to use as
  // first approximation until the line becomes visible (and is thus
  // properly measurable).
  function estimateHeight(cm) {
    var th = textHeight(cm.display), wrapping = cm.options.lineWrapping;
    var perLine = wrapping && Math.max(5, cm.display.scroller.clientWidth / charWidth(cm.display) - 3);
    return function(line) {
      if (lineIsHidden(cm.doc, line)) return 0;

      var widgetsHeight = 0;
      if (line.widgets) for (var i = 0; i < line.widgets.length; i++) {
        if (line.widgets[i].height) widgetsHeight += line.widgets[i].height;
      }

      if (wrapping)
        return widgetsHeight + (Math.ceil(line.text.length / perLine) || 1) * th;
      else
        return widgetsHeight + th;
    };
  }

  function estimateLineHeights(cm) {
    var doc = cm.doc, est = estimateHeight(cm);
    doc.iter(function(line) {
      var estHeight = est(line);
      if (estHeight != line.height) updateLineHeight(line, estHeight);
    });
  }

  function themeChanged(cm) {
    cm.display.wrapper.className = cm.display.wrapper.className.replace(/\s*cm-s-\S+/g, "") +
      cm.options.theme.replace(/(^|\s)\s*/g, " cm-s-");
    clearCaches(cm);
  }

  function guttersChanged(cm) {
    updateGutters(cm);
    regChange(cm);
    setTimeout(function(){alignHorizontally(cm);}, 20);
  }

  // Rebuild the gutter elements, ensure the margin to the left of the
  // code matches their width.
  function updateGutters(cm) {
    var gutters = cm.display.gutters, specs = cm.options.gutters;
    removeChildren(gutters);
    for (var i = 0; i < specs.length; ++i) {
      var gutterClass = specs[i];
      var gElt = gutters.appendChild(elt("div", null, "CodeMirror-gutter " + gutterClass));
      if (gutterClass == "CodeMirror-linenumbers") {
        cm.display.lineGutter = gElt;
        gElt.style.width = (cm.display.lineNumWidth || 1) + "px";
      }
    }
    gutters.style.display = i ? "" : "none";
    updateGutterSpace(cm);
  }

  function updateGutterSpace(cm) {
    var width = cm.display.gutters.offsetWidth;
    cm.display.sizer.style.marginLeft = width + "px";
  }

  // Compute the character length of a line, taking into account
  // collapsed ranges (see markText) that might hide parts, and join
  // other lines onto it.
  function lineLength(line) {
    if (line.height == 0) return 0;
    var len = line.text.length, merged, cur = line;
    while (merged = collapsedSpanAtStart(cur)) {
      var found = merged.find(0, true);
      cur = found.from.line;
      len += found.from.ch - found.to.ch;
    }
    cur = line;
    while (merged = collapsedSpanAtEnd(cur)) {
      var found = merged.find(0, true);
      len -= cur.text.length - found.from.ch;
      cur = found.to.line;
      len += cur.text.length - found.to.ch;
    }
    return len;
  }

  // Find the longest line in the document.
  function findMaxLine(cm) {
    var d = cm.display, doc = cm.doc;
    d.maxLine = getLine(doc, doc.first);
    d.maxLineLength = lineLength(d.maxLine);
    d.maxLineChanged = true;
    doc.iter(function(line) {
      var len = lineLength(line);
      if (len > d.maxLineLength) {
        d.maxLineLength = len;
        d.maxLine = line;
      }
    });
  }

  // Make sure the gutters options contains the element
  // "CodeMirror-linenumbers" when the lineNumbers option is true.
  function setGuttersForLineNumbers(options) {
    var found = indexOf(options.gutters, "CodeMirror-linenumbers");
    if (found == -1 && options.lineNumbers) {
      options.gutters = options.gutters.concat(["CodeMirror-linenumbers"]);
    } else if (found > -1 && !options.lineNumbers) {
      options.gutters = options.gutters.slice(0);
      options.gutters.splice(found, 1);
    }
  }

  // SCROLLBARS

  // Prepare DOM reads needed to update the scrollbars. Done in one
  // shot to minimize update/measure roundtrips.
  function measureForScrollbars(cm) {
    var d = cm.display, gutterW = d.gutters.offsetWidth;
    var docH = Math.round(cm.doc.height + paddingVert(cm.display));
    return {
      clientHeight: d.scroller.clientHeight,
      viewHeight: d.wrapper.clientHeight,
      scrollWidth: d.scroller.scrollWidth, clientWidth: d.scroller.clientWidth,
      viewWidth: d.wrapper.clientWidth,
      barLeft: cm.options.fixedGutter ? gutterW : 0,
      docHeight: docH,
      scrollHeight: docH + scrollGap(cm) + d.barHeight,
      nativeBarWidth: d.nativeBarWidth,
      gutterWidth: gutterW
    };
  }

  function NativeScrollbars(place, scroll, cm) {
    this.cm = cm;
    var vert = this.vert = elt("div", [elt("div", null, null, "min-width: 1px")], "CodeMirror-vscrollbar");
    var horiz = this.horiz = elt("div", [elt("div", null, null, "height: 100%; min-height: 1px")], "CodeMirror-hscrollbar");
    place(vert); place(horiz);

    on(vert, "scroll", function() {
      if (vert.clientHeight) scroll(vert.scrollTop, "vertical");
    });
    on(horiz, "scroll", function() {
      if (horiz.clientWidth) scroll(horiz.scrollLeft, "horizontal");
    });

    this.checkedOverlay = false;
    // Need to set a minimum width to see the scrollbar on IE7 (but must not set it on IE8).
    if (ie && ie_version < 8) this.horiz.style.minHeight = this.vert.style.minWidth = "18px";
  }

  NativeScrollbars.prototype = copyObj({
    update: function(measure) {
      var needsH = measure.scrollWidth > measure.clientWidth + 1;
      var needsV = measure.scrollHeight > measure.clientHeight + 1;
      var sWidth = measure.nativeBarWidth;

      if (needsV) {
        this.vert.style.display = "block";
        this.vert.style.bottom = needsH ? sWidth + "px" : "0";
        var totalHeight = measure.viewHeight - (needsH ? sWidth : 0);
        // A bug in IE8 can cause this value to be negative, so guard it.
        this.vert.firstChild.style.height =
          Math.max(0, measure.scrollHeight - measure.clientHeight + totalHeight) + "px";
      } else {
        this.vert.style.display = "";
        this.vert.firstChild.style.height = "0";
      }

      if (needsH) {
        this.horiz.style.display = "block";
        this.horiz.style.right = needsV ? sWidth + "px" : "0";
        this.horiz.style.left = measure.barLeft + "px";
        var totalWidth = measure.viewWidth - measure.barLeft - (needsV ? sWidth : 0);
        this.horiz.firstChild.style.width =
          (measure.scrollWidth - measure.clientWidth + totalWidth) + "px";
      } else {
        this.horiz.style.display = "";
        this.horiz.firstChild.style.width = "0";
      }

      if (!this.checkedOverlay && measure.clientHeight > 0) {
        if (sWidth == 0) this.overlayHack();
        this.checkedOverlay = true;
      }

      return {right: needsV ? sWidth : 0, bottom: needsH ? sWidth : 0};
    },
    setScrollLeft: function(pos) {
      if (this.horiz.scrollLeft != pos) this.horiz.scrollLeft = pos;
    },
    setScrollTop: function(pos) {
      if (this.vert.scrollTop != pos) this.vert.scrollTop = pos;
    },
    overlayHack: function() {
      var w = mac && !mac_geMountainLion ? "12px" : "18px";
      this.horiz.style.minHeight = this.vert.style.minWidth = w;
      var self = this;
      var barMouseDown = function(e) {
        if (e_target(e) != self.vert && e_target(e) != self.horiz)
          operation(self.cm, onMouseDown)(e);
      };
      on(this.vert, "mousedown", barMouseDown);
      on(this.horiz, "mousedown", barMouseDown);
    },
    clear: function() {
      var parent = this.horiz.parentNode;
      parent.removeChild(this.horiz);
      parent.removeChild(this.vert);
    }
  }, NativeScrollbars.prototype);

  function NullScrollbars() {}

  NullScrollbars.prototype = copyObj({
    update: function() { return {bottom: 0, right: 0}; },
    setScrollLeft: function() {},
    setScrollTop: function() {},
    clear: function() {}
  }, NullScrollbars.prototype);

  CodeMirror.scrollbarModel = {"native": NativeScrollbars, "null": NullScrollbars};

  function initScrollbars(cm) {
    if (cm.display.scrollbars) {
      cm.display.scrollbars.clear();
      if (cm.display.scrollbars.addClass)
        rmClass(cm.display.wrapper, cm.display.scrollbars.addClass);
    }

    cm.display.scrollbars = new CodeMirror.scrollbarModel[cm.options.scrollbarStyle](function(node) {
      cm.display.wrapper.insertBefore(node, cm.display.scrollbarFiller);
      // Prevent clicks in the scrollbars from killing focus
      on(node, "mousedown", function() {
        if (cm.state.focused) setTimeout(function() { cm.display.input.focus(); }, 0);
      });
      node.setAttribute("cm-not-content", "true");
    }, function(pos, axis) {
      if (axis == "horizontal") setScrollLeft(cm, pos);
      else setScrollTop(cm, pos);
    }, cm);
    if (cm.display.scrollbars.addClass)
      addClass(cm.display.wrapper, cm.display.scrollbars.addClass);
  }

  function updateScrollbars(cm, measure) {
    if (!measure) measure = measureForScrollbars(cm);
    var startWidth = cm.display.barWidth, startHeight = cm.display.barHeight;
    updateScrollbarsInner(cm, measure);
    for (var i = 0; i < 4 && startWidth != cm.display.barWidth || startHeight != cm.display.barHeight; i++) {
      if (startWidth != cm.display.barWidth && cm.options.lineWrapping)
        updateHeightsInViewport(cm);
      updateScrollbarsInner(cm, measureForScrollbars(cm));
      startWidth = cm.display.barWidth; startHeight = cm.display.barHeight;
    }
  }

  // Re-synchronize the fake scrollbars with the actual size of the
  // content.
  function updateScrollbarsInner(cm, measure) {
    var d = cm.display;
    var sizes = d.scrollbars.update(measure);

    d.sizer.style.paddingRight = (d.barWidth = sizes.right) + "px";
    d.sizer.style.paddingBottom = (d.barHeight = sizes.bottom) + "px";

    if (sizes.right && sizes.bottom) {
      d.scrollbarFiller.style.display = "block";
      d.scrollbarFiller.style.height = sizes.bottom + "px";
      d.scrollbarFiller.style.width = sizes.right + "px";
    } else d.scrollbarFiller.style.display = "";
    if (sizes.bottom && cm.options.coverGutterNextToScrollbar && cm.options.fixedGutter) {
      d.gutterFiller.style.display = "block";
      d.gutterFiller.style.height = sizes.bottom + "px";
      d.gutterFiller.style.width = measure.gutterWidth + "px";
    } else d.gutterFiller.style.display = "";
  }

  // Compute the lines that are visible in a given viewport (defaults
  // the the current scroll position). viewport may contain top,
  // height, and ensure (see op.scrollToPos) properties.
  function visibleLines(display, doc, viewport) {
    var top = viewport && viewport.top != null ? Math.max(0, viewport.top) : display.scroller.scrollTop;
    top = Math.floor(top - paddingTop(display));
    var bottom = viewport && viewport.bottom != null ? viewport.bottom : top + display.wrapper.clientHeight;

    var from = lineAtHeight(doc, top), to = lineAtHeight(doc, bottom);
    // Ensure is a {from: {line, ch}, to: {line, ch}} object, and
    // forces those lines into the viewport (if possible).
    if (viewport && viewport.ensure) {
      var ensureFrom = viewport.ensure.from.line, ensureTo = viewport.ensure.to.line;
      if (ensureFrom < from) {
        from = ensureFrom;
        to = lineAtHeight(doc, heightAtLine(getLine(doc, ensureFrom)) + display.wrapper.clientHeight);
      } else if (Math.min(ensureTo, doc.lastLine()) >= to) {
        from = lineAtHeight(doc, heightAtLine(getLine(doc, ensureTo)) - display.wrapper.clientHeight);
        to = ensureTo;
      }
    }
    return {from: from, to: Math.max(to, from + 1)};
  }

  // LINE NUMBERS

  // Re-align line numbers and gutter marks to compensate for
  // horizontal scrolling.
  function alignHorizontally(cm) {
    var display = cm.display, view = display.view;
    if (!display.alignWidgets && (!display.gutters.firstChild || !cm.options.fixedGutter)) return;
    var comp = compensateForHScroll(display) - display.scroller.scrollLeft + cm.doc.scrollLeft;
    var gutterW = display.gutters.offsetWidth, left = comp + "px";
    for (var i = 0; i < view.length; i++) if (!view[i].hidden) {
      if (cm.options.fixedGutter && view[i].gutter)
        view[i].gutter.style.left = left;
      var align = view[i].alignable;
      if (align) for (var j = 0; j < align.length; j++)
        align[j].style.left = left;
    }
    if (cm.options.fixedGutter)
      display.gutters.style.left = (comp + gutterW) + "px";
  }

  // Used to ensure that the line number gutter is still the right
  // size for the current document size. Returns true when an update
  // is needed.
  function maybeUpdateLineNumberWidth(cm) {
    if (!cm.options.lineNumbers) return false;
    var doc = cm.doc, last = lineNumberFor(cm.options, doc.first + doc.size - 1), display = cm.display;
    if (last.length != display.lineNumChars) {
      var test = display.measure.appendChild(elt("div", [elt("div", last)],
                                                 "CodeMirror-linenumber CodeMirror-gutter-elt"));
      var innerW = test.firstChild.offsetWidth, padding = test.offsetWidth - innerW;
      display.lineGutter.style.width = "";
      display.lineNumInnerWidth = Math.max(innerW, display.lineGutter.offsetWidth - padding) + 1;
      display.lineNumWidth = display.lineNumInnerWidth + padding;
      display.lineNumChars = display.lineNumInnerWidth ? last.length : -1;
      display.lineGutter.style.width = display.lineNumWidth + "px";
      updateGutterSpace(cm);
      return true;
    }
    return false;
  }

  function lineNumberFor(options, i) {
    return String(options.lineNumberFormatter(i + options.firstLineNumber));
  }

  // Computes display.scroller.scrollLeft + display.gutters.offsetWidth,
  // but using getBoundingClientRect to get a sub-pixel-accurate
  // result.
  function compensateForHScroll(display) {
    return display.scroller.getBoundingClientRect().left - display.sizer.getBoundingClientRect().left;
  }

  // DISPLAY DRAWING

  function DisplayUpdate(cm, viewport, force) {
    var display = cm.display;

    this.viewport = viewport;
    // Store some values that we'll need later (but don't want to force a relayout for)
    this.visible = visibleLines(display, cm.doc, viewport);
    this.editorIsHidden = !display.wrapper.offsetWidth;
    this.wrapperHeight = display.wrapper.clientHeight;
    this.wrapperWidth = display.wrapper.clientWidth;
    this.oldDisplayWidth = displayWidth(cm);
    this.force = force;
    this.dims = getDimensions(cm);
    this.events = [];
  }

  DisplayUpdate.prototype.signal = function(emitter, type) {
    if (hasHandler(emitter, type))
      this.events.push(arguments);
  };
  DisplayUpdate.prototype.finish = function() {
    for (var i = 0; i < this.events.length; i++)
      signal.apply(null, this.events[i]);
  };

  function maybeClipScrollbars(cm) {
    var display = cm.display;
    if (!display.scrollbarsClipped && display.scroller.offsetWidth) {
      display.nativeBarWidth = display.scroller.offsetWidth - display.scroller.clientWidth;
      display.heightForcer.style.height = scrollGap(cm) + "px";
      display.sizer.style.marginBottom = -display.nativeBarWidth + "px";
      display.sizer.style.borderRightWidth = scrollGap(cm) + "px";
      display.scrollbarsClipped = true;
    }
  }

  // Does the actual updating of the line display. Bails out
  // (returning false) when there is nothing to be done and forced is
  // false.
  function updateDisplayIfNeeded(cm, update) {
    var display = cm.display, doc = cm.doc;

    if (update.editorIsHidden) {
      resetView(cm);
      return false;
    }

    // Bail out if the visible area is already rendered and nothing changed.
    if (!update.force &&
        update.visible.from >= display.viewFrom && update.visible.to <= display.viewTo &&
        (display.updateLineNumbers == null || display.updateLineNumbers >= display.viewTo) &&
        display.renderedView == display.view && countDirtyView(cm) == 0)
      return false;

    if (maybeUpdateLineNumberWidth(cm)) {
      resetView(cm);
      update.dims = getDimensions(cm);
    }

    // Compute a suitable new viewport (from & to)
    var end = doc.first + doc.size;
    var from = Math.max(update.visible.from - cm.options.viewportMargin, doc.first);
    var to = Math.min(end, update.visible.to + cm.options.viewportMargin);
    if (display.viewFrom < from && from - display.viewFrom < 20) from = Math.max(doc.first, display.viewFrom);
    if (display.viewTo > to && display.viewTo - to < 20) to = Math.min(end, display.viewTo);
    if (sawCollapsedSpans) {
      from = visualLineNo(cm.doc, from);
      to = visualLineEndNo(cm.doc, to);
    }

    var different = from != display.viewFrom || to != display.viewTo ||
      display.lastWrapHeight != update.wrapperHeight || display.lastWrapWidth != update.wrapperWidth;
    adjustView(cm, from, to);

    display.viewOffset = heightAtLine(getLine(cm.doc, display.viewFrom));
    // Position the mover div to align with the current scroll position
    cm.display.mover.style.top = display.viewOffset + "px";

    var toUpdate = countDirtyView(cm);
    if (!different && toUpdate == 0 && !update.force && display.renderedView == display.view &&
        (display.updateLineNumbers == null || display.updateLineNumbers >= display.viewTo))
      return false;

    // For big changes, we hide the enclosing element during the
    // update, since that speeds up the operations on most browsers.
    var focused = activeElt();
    if (toUpdate > 4) display.lineDiv.style.display = "none";
    patchDisplay(cm, display.updateLineNumbers, update.dims);
    if (toUpdate > 4) display.lineDiv.style.display = "";
    display.renderedView = display.view;
    // There might have been a widget with a focused element that got
    // hidden or updated, if so re-focus it.
    if (focused && activeElt() != focused && focused.offsetHeight) focused.focus();

    // Prevent selection and cursors from interfering with the scroll
    // width and height.
    removeChildren(display.cursorDiv);
    removeChildren(display.selectionDiv);
    display.gutters.style.height = 0;

    if (different) {
      display.lastWrapHeight = update.wrapperHeight;
      display.lastWrapWidth = update.wrapperWidth;
      startWorker(cm, 400);
    }

    display.updateLineNumbers = null;

    return true;
  }

  function postUpdateDisplay(cm, update) {
    var viewport = update.viewport;
    for (var first = true;; first = false) {
      if (!first || !cm.options.lineWrapping || update.oldDisplayWidth == displayWidth(cm)) {
        // Clip forced viewport to actual scrollable area.
        if (viewport && viewport.top != null)
          viewport = {top: Math.min(cm.doc.height + paddingVert(cm.display) - displayHeight(cm), viewport.top)};
        // Updated line heights might result in the drawn area not
        // actually covering the viewport. Keep looping until it does.
        update.visible = visibleLines(cm.display, cm.doc, viewport);
        if (update.visible.from >= cm.display.viewFrom && update.visible.to <= cm.display.viewTo)
          break;
      }
      if (!updateDisplayIfNeeded(cm, update)) break;
      updateHeightsInViewport(cm);
      var barMeasure = measureForScrollbars(cm);
      updateSelection(cm);
      setDocumentHeight(cm, barMeasure);
      updateScrollbars(cm, barMeasure);
    }

    update.signal(cm, "update", cm);
    if (cm.display.viewFrom != cm.display.reportedViewFrom || cm.display.viewTo != cm.display.reportedViewTo) {
      update.signal(cm, "viewportChange", cm, cm.display.viewFrom, cm.display.viewTo);
      cm.display.reportedViewFrom = cm.display.viewFrom; cm.display.reportedViewTo = cm.display.viewTo;
    }
  }

  function updateDisplaySimple(cm, viewport) {
    var update = new DisplayUpdate(cm, viewport);
    if (updateDisplayIfNeeded(cm, update)) {
      updateHeightsInViewport(cm);
      postUpdateDisplay(cm, update);
      var barMeasure = measureForScrollbars(cm);
      updateSelection(cm);
      setDocumentHeight(cm, barMeasure);
      updateScrollbars(cm, barMeasure);
      update.finish();
    }
  }

  function setDocumentHeight(cm, measure) {
    cm.display.sizer.style.minHeight = measure.docHeight + "px";
    var total = measure.docHeight + cm.display.barHeight;
    cm.display.heightForcer.style.top = total + "px";
    cm.display.gutters.style.height = Math.max(total + scrollGap(cm), measure.clientHeight) + "px";
  }

  // Read the actual heights of the rendered lines, and update their
  // stored heights to match.
  function updateHeightsInViewport(cm) {
    var display = cm.display;
    var prevBottom = display.lineDiv.offsetTop;
    for (var i = 0; i < display.view.length; i++) {
      var cur = display.view[i], height;
      if (cur.hidden) continue;
      if (ie && ie_version < 8) {
        var bot = cur.node.offsetTop + cur.node.offsetHeight;
        height = bot - prevBottom;
        prevBottom = bot;
      } else {
        var box = cur.node.getBoundingClientRect();
        height = box.bottom - box.top;
      }
      var diff = cur.line.height - height;
      if (height < 2) height = textHeight(display);
      if (diff > .001 || diff < -.001) {
        updateLineHeight(cur.line, height);
        updateWidgetHeight(cur.line);
        if (cur.rest) for (var j = 0; j < cur.rest.length; j++)
          updateWidgetHeight(cur.rest[j]);
      }
    }
  }

  // Read and store the height of line widgets associated with the
  // given line.
  function updateWidgetHeight(line) {
    if (line.widgets) for (var i = 0; i < line.widgets.length; ++i)
      line.widgets[i].height = line.widgets[i].node.offsetHeight;
  }

  // Do a bulk-read of the DOM positions and sizes needed to draw the
  // view, so that we don't interleave reading and writing to the DOM.
  function getDimensions(cm) {
    var d = cm.display, left = {}, width = {};
    var gutterLeft = d.gutters.clientLeft;
    for (var n = d.gutters.firstChild, i = 0; n; n = n.nextSibling, ++i) {
      left[cm.options.gutters[i]] = n.offsetLeft + n.clientLeft + gutterLeft;
      width[cm.options.gutters[i]] = n.clientWidth;
    }
    return {fixedPos: compensateForHScroll(d),
            gutterTotalWidth: d.gutters.offsetWidth,
            gutterLeft: left,
            gutterWidth: width,
            wrapperWidth: d.wrapper.clientWidth};
  }

  // Sync the actual display DOM structure with display.view, removing
  // nodes for lines that are no longer in view, and creating the ones
  // that are not there yet, and updating the ones that are out of
  // date.
  function patchDisplay(cm, updateNumbersFrom, dims) {
    var display = cm.display, lineNumbers = cm.options.lineNumbers;
    var container = display.lineDiv, cur = container.firstChild;

    function rm(node) {
      var next = node.nextSibling;
      // Works around a throw-scroll bug in OS X Webkit
      if (webkit && mac && cm.display.currentWheelTarget == node)
        node.style.display = "none";
      else
        node.parentNode.removeChild(node);
      return next;
    }

    var view = display.view, lineN = display.viewFrom;
    // Loop over the elements in the view, syncing cur (the DOM nodes
    // in display.lineDiv) with the view as we go.
    for (var i = 0; i < view.length; i++) {
      var lineView = view[i];
      if (lineView.hidden) {
      } else if (!lineView.node || lineView.node.parentNode != container) { // Not drawn yet
        var node = buildLineElement(cm, lineView, lineN, dims);
        container.insertBefore(node, cur);
      } else { // Already drawn
        while (cur != lineView.node) cur = rm(cur);
        var updateNumber = lineNumbers && updateNumbersFrom != null &&
          updateNumbersFrom <= lineN && lineView.lineNumber;
        if (lineView.changes) {
          if (indexOf(lineView.changes, "gutter") > -1) updateNumber = false;
          updateLineForChanges(cm, lineView, lineN, dims);
        }
        if (updateNumber) {
          removeChildren(lineView.lineNumber);
          lineView.lineNumber.appendChild(document.createTextNode(lineNumberFor(cm.options, lineN)));
        }
        cur = lineView.node.nextSibling;
      }
      lineN += lineView.size;
    }
    while (cur) cur = rm(cur);
  }

  // When an aspect of a line changes, a string is added to
  // lineView.changes. This updates the relevant part of the line's
  // DOM structure.
  function updateLineForChanges(cm, lineView, lineN, dims) {
    for (var j = 0; j < lineView.changes.length; j++) {
      var type = lineView.changes[j];
      if (type == "text") updateLineText(cm, lineView);
      else if (type == "gutter") updateLineGutter(cm, lineView, lineN, dims);
      else if (type == "class") updateLineClasses(lineView);
      else if (type == "widget") updateLineWidgets(cm, lineView, dims);
    }
    lineView.changes = null;
  }

  // Lines with gutter elements, widgets or a background class need to
  // be wrapped, and have the extra elements added to the wrapper div
  function ensureLineWrapped(lineView) {
    if (lineView.node == lineView.text) {
      lineView.node = elt("div", null, null, "position: relative");
      if (lineView.text.parentNode)
        lineView.text.parentNode.replaceChild(lineView.node, lineView.text);
      lineView.node.appendChild(lineView.text);
      if (ie && ie_version < 8) lineView.node.style.zIndex = 2;
    }
    return lineView.node;
  }

  function updateLineBackground(lineView) {
    var cls = lineView.bgClass ? lineView.bgClass + " " + (lineView.line.bgClass || "") : lineView.line.bgClass;
    if (cls) cls += " CodeMirror-linebackground";
    if (lineView.background) {
      if (cls) lineView.background.className = cls;
      else { lineView.background.parentNode.removeChild(lineView.background); lineView.background = null; }
    } else if (cls) {
      var wrap = ensureLineWrapped(lineView);
      lineView.background = wrap.insertBefore(elt("div", null, cls), wrap.firstChild);
    }
  }

  // Wrapper around buildLineContent which will reuse the structure
  // in display.externalMeasured when possible.
  function getLineContent(cm, lineView) {
    var ext = cm.display.externalMeasured;
    if (ext && ext.line == lineView.line) {
      cm.display.externalMeasured = null;
      lineView.measure = ext.measure;
      return ext.built;
    }
    return buildLineContent(cm, lineView);
  }

  // Redraw the line's text. Interacts with the background and text
  // classes because the mode may output tokens that influence these
  // classes.
  function updateLineText(cm, lineView) {
    var cls = lineView.text.className;
    var built = getLineContent(cm, lineView);
    if (lineView.text == lineView.node) lineView.node = built.pre;
    lineView.text.parentNode.replaceChild(built.pre, lineView.text);
    lineView.text = built.pre;
    if (built.bgClass != lineView.bgClass || built.textClass != lineView.textClass) {
      lineView.bgClass = built.bgClass;
      lineView.textClass = built.textClass;
      updateLineClasses(lineView);
    } else if (cls) {
      lineView.text.className = cls;
    }
  }

  function updateLineClasses(lineView) {
    updateLineBackground(lineView);
    if (lineView.line.wrapClass)
      ensureLineWrapped(lineView).className = lineView.line.wrapClass;
    else if (lineView.node != lineView.text)
      lineView.node.className = "";
    var textClass = lineView.textClass ? lineView.textClass + " " + (lineView.line.textClass || "") : lineView.line.textClass;
    lineView.text.className = textClass || "";
  }

  function updateLineGutter(cm, lineView, lineN, dims) {
    if (lineView.gutter) {
      lineView.node.removeChild(lineView.gutter);
      lineView.gutter = null;
    }
    var markers = lineView.line.gutterMarkers;
    if (cm.options.lineNumbers || markers) {
      var wrap = ensureLineWrapped(lineView);
      var gutterWrap = lineView.gutter = elt("div", null, "CodeMirror-gutter-wrapper", "left: " +
                                             (cm.options.fixedGutter ? dims.fixedPos : -dims.gutterTotalWidth) +
                                             "px; width: " + dims.gutterTotalWidth + "px");
      cm.display.input.setUneditable(gutterWrap);
      wrap.insertBefore(gutterWrap, lineView.text);
      if (lineView.line.gutterClass)
        gutterWrap.className += " " + lineView.line.gutterClass;
      if (cm.options.lineNumbers && (!markers || !markers["CodeMirror-linenumbers"]))
        lineView.lineNumber = gutterWrap.appendChild(
          elt("div", lineNumberFor(cm.options, lineN),
              "CodeMirror-linenumber CodeMirror-gutter-elt",
              "left: " + dims.gutterLeft["CodeMirror-linenumbers"] + "px; width: "
              + cm.display.lineNumInnerWidth + "px"));
      if (markers) for (var k = 0; k < cm.options.gutters.length; ++k) {
        var id = cm.options.gutters[k], found = markers.hasOwnProperty(id) && markers[id];
        if (found)
          gutterWrap.appendChild(elt("div", [found], "CodeMirror-gutter-elt", "left: " +
                                     dims.gutterLeft[id] + "px; width: " + dims.gutterWidth[id] + "px"));
      }
    }
  }

  function updateLineWidgets(cm, lineView, dims) {
    if (lineView.alignable) lineView.alignable = null;
    for (var node = lineView.node.firstChild, next; node; node = next) {
      var next = node.nextSibling;
      if (node.className == "CodeMirror-linewidget")
        lineView.node.removeChild(node);
    }
    insertLineWidgets(cm, lineView, dims);
  }

  // Build a line's DOM representation from scratch
  function buildLineElement(cm, lineView, lineN, dims) {
    var built = getLineContent(cm, lineView);
    lineView.text = lineView.node = built.pre;
    if (built.bgClass) lineView.bgClass = built.bgClass;
    if (built.textClass) lineView.textClass = built.textClass;

    updateLineClasses(lineView);
    updateLineGutter(cm, lineView, lineN, dims);
    insertLineWidgets(cm, lineView, dims);
    return lineView.node;
  }

  // A lineView may contain multiple logical lines (when merged by
  // collapsed spans). The widgets for all of them need to be drawn.
  function insertLineWidgets(cm, lineView, dims) {
    insertLineWidgetsFor(cm, lineView.line, lineView, dims, true);
    if (lineView.rest) for (var i = 0; i < lineView.rest.length; i++)
      insertLineWidgetsFor(cm, lineView.rest[i], lineView, dims, false);
  }

  function insertLineWidgetsFor(cm, line, lineView, dims, allowAbove) {
    if (!line.widgets) return;
    var wrap = ensureLineWrapped(lineView);
    for (var i = 0, ws = line.widgets; i < ws.length; ++i) {
      var widget = ws[i], node = elt("div", [widget.node], "CodeMirror-linewidget");
      if (!widget.handleMouseEvents) node.setAttribute("cm-ignore-events", "true");
      positionLineWidget(widget, node, lineView, dims);
      cm.display.input.setUneditable(node);
      if (allowAbove && widget.above)
        wrap.insertBefore(node, lineView.gutter || lineView.text);
      else
        wrap.appendChild(node);
      signalLater(widget, "redraw");
    }
  }

  function positionLineWidget(widget, node, lineView, dims) {
    if (widget.noHScroll) {
      (lineView.alignable || (lineView.alignable = [])).push(node);
      var width = dims.wrapperWidth;
      node.style.left = dims.fixedPos + "px";
      if (!widget.coverGutter) {
        width -= dims.gutterTotalWidth;
        node.style.paddingLeft = dims.gutterTotalWidth + "px";
      }
      node.style.width = width + "px";
    }
    if (widget.coverGutter) {
      node.style.zIndex = 5;
      node.style.position = "relative";
      if (!widget.noHScroll) node.style.marginLeft = -dims.gutterTotalWidth + "px";
    }
  }

  // POSITION OBJECT

  // A Pos instance represents a position within the text.
  var Pos = CodeMirror.Pos = function(line, ch) {
    if (!(this instanceof Pos)) return new Pos(line, ch);
    this.line = line; this.ch = ch;
  };

  // Compare two positions, return 0 if they are the same, a negative
  // number when a is less, and a positive number otherwise.
  var cmp = CodeMirror.cmpPos = function(a, b) { return a.line - b.line || a.ch - b.ch; };

  function copyPos(x) {return Pos(x.line, x.ch);}
  function maxPos(a, b) { return cmp(a, b) < 0 ? b : a; }
  function minPos(a, b) { return cmp(a, b) < 0 ? a : b; }

  // INPUT HANDLING

  function ensureFocus(cm) {
    if (!cm.state.focused) { cm.display.input.focus(); onFocus(cm); }
  }

  function isReadOnly(cm) {
    return cm.options.readOnly || cm.doc.cantEdit;
  }

  // This will be set to an array of strings when copying, so that,
  // when pasting, we know what kind of selections the copied text
  // was made out of.
  var lastCopied = null;

  function applyTextInput(cm, inserted, deleted, sel, origin) {
    var doc = cm.doc;
    cm.display.shift = false;
    if (!sel) sel = doc.sel;

    var paste = cm.state.pasteIncoming || origin == "paste";
    var textLines = splitLines(inserted), multiPaste = null;
    // When pasing N lines into N selections, insert one line per selection
    if (paste && sel.ranges.length > 1) {
      if (lastCopied && lastCopied.join("\n") == inserted)
        multiPaste = sel.ranges.length % lastCopied.length == 0 && map(lastCopied, splitLines);
      else if (textLines.length == sel.ranges.length)
        multiPaste = map(textLines, function(l) { return [l]; });
    }

    // Normal behavior is to insert the new text into every selection
    for (var i = sel.ranges.length - 1; i >= 0; i--) {
      var range = sel.ranges[i];
      var from = range.from(), to = range.to();
      if (range.empty()) {
        if (deleted && deleted > 0) // Handle deletion
          from = Pos(from.line, from.ch - deleted);
        else if (cm.state.overwrite && !paste) // Handle overwrite
          to = Pos(to.line, Math.min(getLine(doc, to.line).text.length, to.ch + lst(textLines).length));
      }
      var updateInput = cm.curOp.updateInput;
      var changeEvent = {from: from, to: to, text: multiPaste ? multiPaste[i % multiPaste.length] : textLines,
                         origin: origin || (paste ? "paste" : cm.state.cutIncoming ? "cut" : "+input")};
      makeChange(cm.doc, changeEvent);
      signalLater(cm, "inputRead", cm, changeEvent);
    }
    if (inserted && !paste)
      triggerElectric(cm, inserted);

    ensureCursorVisible(cm);
    cm.curOp.updateInput = updateInput;
    cm.curOp.typing = true;
    cm.state.pasteIncoming = cm.state.cutIncoming = false;
  }

  function handlePaste(e, cm) {
    var pasted = e.clipboardData && e.clipboardData.getData("text/plain");
    if (pasted) {
      e.preventDefault();
      runInOp(cm, function() { applyTextInput(cm, pasted, 0, null, "paste"); });
      return true;
    }
  }

  function triggerElectric(cm, inserted) {
    // When an 'electric' character is inserted, immediately trigger a reindent
    if (!cm.options.electricChars || !cm.options.smartIndent) return;
    var sel = cm.doc.sel;

    for (var i = sel.ranges.length - 1; i >= 0; i--) {
      var range = sel.ranges[i];
      if (range.head.ch > 100 || (i && sel.ranges[i - 1].head.line == range.head.line)) continue;
      var mode = cm.getModeAt(range.head);
      var indented = false;
      if (mode.electricChars) {
        for (var j = 0; j < mode.electricChars.length; j++)
          if (inserted.indexOf(mode.electricChars.charAt(j)) > -1) {
            indented = indentLine(cm, range.head.line, "smart");
            break;
          }
      } else if (mode.electricInput) {
        if (mode.electricInput.test(getLine(cm.doc, range.head.line).text.slice(0, range.head.ch)))
          indented = indentLine(cm, range.head.line, "smart");
      }
      if (indented) signalLater(cm, "electricInput", cm, range.head.line);
    }
  }

  function copyableRanges(cm) {
    var text = [], ranges = [];
    for (var i = 0; i < cm.doc.sel.ranges.length; i++) {
      var line = cm.doc.sel.ranges[i].head.line;
      var lineRange = {anchor: Pos(line, 0), head: Pos(line + 1, 0)};
      ranges.push(lineRange);
      text.push(cm.getRange(lineRange.anchor, lineRange.head));
    }
    return {text: text, ranges: ranges};
  }

  function disableBrowserMagic(field) {
    field.setAttribute("autocorrect", "off");
    field.setAttribute("autocapitalize", "off");
    field.setAttribute("spellcheck", "false");
  }

  // TEXTAREA INPUT STYLE

  function TextareaInput(cm) {
    this.cm = cm;
    // See input.poll and input.reset
    this.prevInput = "";

    // Flag that indicates whether we expect input to appear real soon
    // now (after some event like 'keypress' or 'input') and are
    // polling intensively.
    this.pollingFast = false;
    // Self-resetting timeout for the poller
    this.polling = new Delayed();
    // Tracks when input.reset has punted to just putting a short
    // string into the textarea instead of the full selection.
    this.inaccurateSelection = false;
    // Used to work around IE issue with selection being forgotten when focus moves away from textarea
    this.hasSelection = false;
    this.composing = null;
  };

  function hiddenTextarea() {
    var te = elt("textarea", null, null, "position: absolute; padding: 0; width: 1px; height: 1em; outline: none");
    var div = elt("div", [te], null, "overflow: hidden; position: relative; width: 3px; height: 0px;");
    // The textarea is kept positioned near the cursor to prevent the
    // fact that it'll be scrolled into view on input from scrolling
    // our fake cursor out of view. On webkit, when wrap=off, paste is
    // very slow. So make the area wide instead.
    if (webkit) te.style.width = "1000px";
    else te.setAttribute("wrap", "off");
    // If border: 0; -- iOS fails to open keyboard (issue #1287)
    if (ios) te.style.border = "1px solid black";
    disableBrowserMagic(te);
    return div;
  }

  TextareaInput.prototype = copyObj({
    init: function(display) {
      var input = this, cm = this.cm;

      // Wraps and hides input textarea
      var div = this.wrapper = hiddenTextarea();
      // The semihidden textarea that is focused when the editor is
      // focused, and receives input.
      var te = this.textarea = div.firstChild;
      display.wrapper.insertBefore(div, display.wrapper.firstChild);

      // Needed to hide big blue blinking cursor on Mobile Safari (doesn't seem to work in iOS 8 anymore)
      if (ios) te.style.width = "0px";

      on(te, "input", function() {
        if (ie && ie_version >= 9 && input.hasSelection) input.hasSelection = null;
        input.poll();
      });

      on(te, "paste", function(e) {
        if (handlePaste(e, cm)) return true;

        cm.state.pasteIncoming = true;
        input.fastPoll();
      });

      function prepareCopyCut(e) {
        if (cm.somethingSelected()) {
          lastCopied = cm.getSelections();
          if (input.inaccurateSelection) {
            input.prevInput = "";
            input.inaccurateSelection = false;
            te.value = lastCopied.join("\n");
            selectInput(te);
          }
        } else if (!cm.options.lineWiseCopyCut) {
          return;
        } else {
          var ranges = copyableRanges(cm);
          lastCopied = ranges.text;
          if (e.type == "cut") {
            cm.setSelections(ranges.ranges, null, sel_dontScroll);
          } else {
            input.prevInput = "";
            te.value = ranges.text.join("\n");
            selectInput(te);
          }
        }
        if (e.type == "cut") cm.state.cutIncoming = true;
      }
      on(te, "cut", prepareCopyCut);
      on(te, "copy", prepareCopyCut);

      on(display.scroller, "paste", function(e) {
        if (eventInWidget(display, e)) return;
        cm.state.pasteIncoming = true;
        input.focus();
      });

      // Prevent normal selection in the editor (we handle our own)
      on(display.lineSpace, "selectstart", function(e) {
        if (!eventInWidget(display, e)) e_preventDefault(e);
      });

      on(te, "compositionstart", function() {
        var start = cm.getCursor("from");
        input.composing = {
          start: start,
          range: cm.markText(start, cm.getCursor("to"), {className: "CodeMirror-composing"})
        };
      });
      on(te, "compositionend", function() {
        if (input.composing) {
          input.poll();
          input.composing.range.clear();
          input.composing = null;
        }
      });
    },

    prepareSelection: function() {
      // Redraw the selection and/or cursor
      var cm = this.cm, display = cm.display, doc = cm.doc;
      var result = prepareSelection(cm);

      // Move the hidden textarea near the cursor to prevent scrolling artifacts
      if (cm.options.moveInputWithCursor) {
        var headPos = cursorCoords(cm, doc.sel.primary().head, "div");
        var wrapOff = display.wrapper.getBoundingClientRect(), lineOff = display.lineDiv.getBoundingClientRect();
        result.teTop = Math.max(0, Math.min(display.wrapper.clientHeight - 10,
                                            headPos.top + lineOff.top - wrapOff.top));
        result.teLeft = Math.max(0, Math.min(display.wrapper.clientWidth - 10,
                                             headPos.left + lineOff.left - wrapOff.left));
      }

      return result;
    },

    showSelection: function(drawn) {
      var cm = this.cm, display = cm.display;
      removeChildrenAndAdd(display.cursorDiv, drawn.cursors);
      removeChildrenAndAdd(display.selectionDiv, drawn.selection);
      if (drawn.teTop != null) {
        this.wrapper.style.top = drawn.teTop + "px";
        this.wrapper.style.left = drawn.teLeft + "px";
      }
    },

    // Reset the input to correspond to the selection (or to be empty,
    // when not typing and nothing is selected)
    reset: function(typing) {
      if (this.contextMenuPending) return;
      var minimal, selected, cm = this.cm, doc = cm.doc;
      if (cm.somethingSelected()) {
        this.prevInput = "";
        var range = doc.sel.primary();
        minimal = hasCopyEvent &&
          (range.to().line - range.from().line > 100 || (selected = cm.getSelection()).length > 1000);
        var content = minimal ? "-" : selected || cm.getSelection();
        this.textarea.value = content;
        if (cm.state.focused) selectInput(this.textarea);
        if (ie && ie_version >= 9) this.hasSelection = content;
      } else if (!typing) {
        this.prevInput = this.textarea.value = "";
        if (ie && ie_version >= 9) this.hasSelection = null;
      }
      this.inaccurateSelection = minimal;
    },

    getField: function() { return this.textarea; },

    supportsTouch: function() { return false; },

    focus: function() {
      if (this.cm.options.readOnly != "nocursor" && (!mobile || activeElt() != this.textarea)) {
        try { this.textarea.focus(); }
        catch (e) {} // IE8 will throw if the textarea is display: none or not in DOM
      }
    },

    blur: function() { this.textarea.blur(); },

    resetPosition: function() {
      this.wrapper.style.top = this.wrapper.style.left = 0;
    },

    receivedFocus: function() { this.slowPoll(); },

    // Poll for input changes, using the normal rate of polling. This
    // runs as long as the editor is focused.
    slowPoll: function() {
      var input = this;
      if (input.pollingFast) return;
      input.polling.set(this.cm.options.pollInterval, function() {
        input.poll();
        if (input.cm.state.focused) input.slowPoll();
      });
    },

    // When an event has just come in that is likely to add or change
    // something in the input textarea, we poll faster, to ensure that
    // the change appears on the screen quickly.
    fastPoll: function() {
      var missed = false, input = this;
      input.pollingFast = true;
      function p() {
        var changed = input.poll();
        if (!changed && !missed) {missed = true; input.polling.set(60, p);}
        else {input.pollingFast = false; input.slowPoll();}
      }
      input.polling.set(20, p);
    },

    // Read input from the textarea, and update the document to match.
    // When something is selected, it is present in the textarea, and
    // selected (unless it is huge, in which case a placeholder is
    // used). When nothing is selected, the cursor sits after previously
    // seen text (can be empty), which is stored in prevInput (we must
    // not reset the textarea when typing, because that breaks IME).
    poll: function() {
      var cm = this.cm, input = this.textarea, prevInput = this.prevInput;
      // Since this is called a *lot*, try to bail out as cheaply as
      // possible when it is clear that nothing happened. hasSelection
      // will be the case when there is a lot of text in the textarea,
      // in which case reading its value would be expensive.
      if (this.contextMenuPending || !cm.state.focused ||
          (hasSelection(input) && !prevInput) ||
          isReadOnly(cm) || cm.options.disableInput || cm.state.keySeq)
        return false;

      var text = input.value;
      // If nothing changed, bail.
      if (text == prevInput && !cm.somethingSelected()) return false;
      // Work around nonsensical selection resetting in IE9/10, and
      // inexplicable appearance of private area unicode characters on
      // some key combos in Mac (#2689).
      if (ie && ie_version >= 9 && this.hasSelection === text ||
          mac && /[\uf700-\uf7ff]/.test(text)) {
        cm.display.input.reset();
        return false;
      }

      if (cm.doc.sel == cm.display.selForContextMenu) {
        var first = text.charCodeAt(0);
        if (first == 0x200b && !prevInput) prevInput = "\u200b";
        if (first == 0x21da) { this.reset(); return this.cm.execCommand("undo"); }
      }
      // Find the part of the input that is actually new
      var same = 0, l = Math.min(prevInput.length, text.length);
      while (same < l && prevInput.charCodeAt(same) == text.charCodeAt(same)) ++same;

      var self = this;
      runInOp(cm, function() {
        applyTextInput(cm, text.slice(same), prevInput.length - same,
                       null, self.composing ? "*compose" : null);

        // Don't leave long text in the textarea, since it makes further polling slow
        if (text.length > 1000 || text.indexOf("\n") > -1) input.value = self.prevInput = "";
        else self.prevInput = text;

        if (self.composing) {
          self.composing.range.clear();
          self.composing.range = cm.markText(self.composing.start, cm.getCursor("to"),
                                             {className: "CodeMirror-composing"});
        }
      });
      return true;
    },

    ensurePolled: function() {
      if (this.pollingFast && this.poll()) this.pollingFast = false;
    },

    onKeyPress: function() {
      if (ie && ie_version >= 9) this.hasSelection = null;
      this.fastPoll();
    },

    onContextMenu: function(e) {
      var input = this, cm = input.cm, display = cm.display, te = input.textarea;
      var pos = posFromMouse(cm, e), scrollPos = display.scroller.scrollTop;
      if (!pos || presto) return; // Opera is difficult.

      // Reset the current text selection only if the click is done outside of the selection
      // and 'resetSelectionOnContextMenu' option is true.
      var reset = cm.options.resetSelectionOnContextMenu;
      if (reset && cm.doc.sel.contains(pos) == -1)
        operation(cm, setSelection)(cm.doc, simpleSelection(pos), sel_dontScroll);

      var oldCSS = te.style.cssText;
      input.wrapper.style.position = "absolute";
      te.style.cssText = "position: fixed; width: 30px; height: 30px; top: " + (e.clientY - 5) +
        "px; left: " + (e.clientX - 5) + "px; z-index: 1000; background: " +
        (ie ? "rgba(255, 255, 255, .05)" : "transparent") +
        "; outline: none; border-width: 0; outline: none; overflow: hidden; opacity: .05; filter: alpha(opacity=5);";
      if (webkit) var oldScrollY = window.scrollY; // Work around Chrome issue (#2712)
      display.input.focus();
      if (webkit) window.scrollTo(null, oldScrollY);
      display.input.reset();
      // Adds "Select all" to context menu in FF
      if (!cm.somethingSelected()) te.value = input.prevInput = " ";
      input.contextMenuPending = true;
      display.selForContextMenu = cm.doc.sel;
      clearTimeout(display.detectingSelectAll);

      // Select-all will be greyed out if there's nothing to select, so
      // this adds a zero-width space so that we can later check whether
      // it got selected.
      function prepareSelectAllHack() {
        if (te.selectionStart != null) {
          var selected = cm.somethingSelected();
          var extval = "\u200b" + (selected ? te.value : "");
          te.value = "\u21da"; // Used to catch context-menu undo
          te.value = extval;
          input.prevInput = selected ? "" : "\u200b";
          te.selectionStart = 1; te.selectionEnd = extval.length;
          // Re-set this, in case some other handler touched the
          // selection in the meantime.
          display.selForContextMenu = cm.doc.sel;
        }
      }
      function rehide() {
        input.contextMenuPending = false;
        input.wrapper.style.position = "relative";
        te.style.cssText = oldCSS;
        if (ie && ie_version < 9) display.scrollbars.setScrollTop(display.scroller.scrollTop = scrollPos);

        // Try to detect the user choosing select-all
        if (te.selectionStart != null) {
          if (!ie || (ie && ie_version < 9)) prepareSelectAllHack();
          var i = 0, poll = function() {
            if (display.selForContextMenu == cm.doc.sel && te.selectionStart == 0 &&
                te.selectionEnd > 0 && input.prevInput == "\u200b")
              operation(cm, commands.selectAll)(cm);
            else if (i++ < 10) display.detectingSelectAll = setTimeout(poll, 500);
            else display.input.reset();
          };
          display.detectingSelectAll = setTimeout(poll, 200);
        }
      }

      if (ie && ie_version >= 9) prepareSelectAllHack();
      if (captureRightClick) {
        e_stop(e);
        var mouseup = function() {
          off(window, "mouseup", mouseup);
          setTimeout(rehide, 20);
        };
        on(window, "mouseup", mouseup);
      } else {
        setTimeout(rehide, 50);
      }
    },

    setUneditable: nothing,

    needsContentAttribute: false
  }, TextareaInput.prototype);

  // CONTENTEDITABLE INPUT STYLE

  function ContentEditableInput(cm) {
    this.cm = cm;
    this.lastAnchorNode = this.lastAnchorOffset = this.lastFocusNode = this.lastFocusOffset = null;
    this.polling = new Delayed();
    this.gracePeriod = false;
  }

  ContentEditableInput.prototype = copyObj({
    init: function(display) {
      var input = this, cm = input.cm;
      var div = input.div = display.lineDiv;
      div.contentEditable = "true";
      disableBrowserMagic(div);

      on(div, "paste", function(e) { handlePaste(e, cm); })

      on(div, "compositionstart", function(e) {
        var data = e.data;
        input.composing = {sel: cm.doc.sel, data: data, startData: data};
        if (!data) return;
        var prim = cm.doc.sel.primary();
        var line = cm.getLine(prim.head.line);
        var found = line.indexOf(data, Math.max(0, prim.head.ch - data.length));
        if (found > -1 && found <= prim.head.ch)
          input.composing.sel = simpleSelection(Pos(prim.head.line, found),
                                                Pos(prim.head.line, found + data.length));
      });
      on(div, "compositionupdate", function(e) {
        input.composing.data = e.data;
      });
      on(div, "compositionend", function(e) {
        var ours = input.composing;
        if (!ours) return;
        if (e.data != ours.startData && !/\u200b/.test(e.data))
          ours.data = e.data;
        // Need a small delay to prevent other code (input event,
        // selection polling) from doing damage when fired right after
        // compositionend.
        setTimeout(function() {
          if (!ours.handled)
            input.applyComposition(ours);
          if (input.composing == ours)
            input.composing = null;
        }, 50);
      });

      on(div, "touchstart", function() {
        input.forceCompositionEnd();
      });

      on(div, "input", function() {
        if (input.composing) return;
        if (!input.pollContent())
          runInOp(input.cm, function() {regChange(cm);});
      });

      function onCopyCut(e) {
        if (cm.somethingSelected()) {
          lastCopied = cm.getSelections();
          if (e.type == "cut") cm.replaceSelection("", null, "cut");
        } else if (!cm.options.lineWiseCopyCut) {
          return;
        } else {
          var ranges = copyableRanges(cm);
          lastCopied = ranges.text;
          if (e.type == "cut") {
            cm.operation(function() {
              cm.setSelections(ranges.ranges, 0, sel_dontScroll);
              cm.replaceSelection("", null, "cut");
            });
          }
        }
        // iOS exposes the clipboard API, but seems to discard content inserted into it
        if (e.clipboardData && !ios) {
          e.preventDefault();
          e.clipboardData.clearData();
          e.clipboardData.setData("text/plain", lastCopied.join("\n"));
        } else {
          // Old-fashioned briefly-focus-a-textarea hack
          var kludge = hiddenTextarea(), te = kludge.firstChild;
          cm.display.lineSpace.insertBefore(kludge, cm.display.lineSpace.firstChild);
          te.value = lastCopied.join("\n");
          var hadFocus = document.activeElement;
          selectInput(te);
          setTimeout(function() {
            cm.display.lineSpace.removeChild(kludge);
            hadFocus.focus();
          }, 50);
        }
      }
      on(div, "copy", onCopyCut);
      on(div, "cut", onCopyCut);
    },

    prepareSelection: function() {
      var result = prepareSelection(this.cm, false);
      result.focus = this.cm.state.focused;
      return result;
    },

    showSelection: function(info) {
      if (!info || !this.cm.display.view.length) return;
      if (info.focus) this.showPrimarySelection();
      this.showMultipleSelections(info);
    },

    showPrimarySelection: function() {
      var sel = window.getSelection(), prim = this.cm.doc.sel.primary();
      var curAnchor = domToPos(this.cm, sel.anchorNode, sel.anchorOffset);
      var curFocus = domToPos(this.cm, sel.focusNode, sel.focusOffset);
      if (curAnchor && !curAnchor.bad && curFocus && !curFocus.bad &&
          cmp(minPos(curAnchor, curFocus), prim.from()) == 0 &&
          cmp(maxPos(curAnchor, curFocus), prim.to()) == 0)
        return;

      var start = posToDOM(this.cm, prim.from());
      var end = posToDOM(this.cm, prim.to());
      if (!start && !end) return;

      var view = this.cm.display.view;
      var old = sel.rangeCount && sel.getRangeAt(0);
      if (!start) {
        start = {node: view[0].measure.map[2], offset: 0};
      } else if (!end) { // FIXME dangerously hacky
        var measure = view[view.length - 1].measure;
        var map = measure.maps ? measure.maps[measure.maps.length - 1] : measure.map;
        end = {node: map[map.length - 1], offset: map[map.length - 2] - map[map.length - 3]};
      }

      try { var rng = range(start.node, start.offset, end.offset, end.node); }
      catch(e) {} // Our model of the DOM might be outdated, in which case the range we try to set can be impossible
      if (rng) {
        sel.removeAllRanges();
        sel.addRange(rng);
        if (old && sel.anchorNode == null) sel.addRange(old);
        else if (gecko) this.startGracePeriod();
      }
      this.rememberSelection();
    },

    startGracePeriod: function() {
      var input = this;
      clearTimeout(this.gracePeriod);
      this.gracePeriod = setTimeout(function() {
        input.gracePeriod = false;
        if (input.selectionChanged())
          input.cm.operation(function() { input.cm.curOp.selectionChanged = true; });
      }, 20);
    },

    showMultipleSelections: function(info) {
      removeChildrenAndAdd(this.cm.display.cursorDiv, info.cursors);
      removeChildrenAndAdd(this.cm.display.selectionDiv, info.selection);
    },

    rememberSelection: function() {
      var sel = window.getSelection();
      this.lastAnchorNode = sel.anchorNode; this.lastAnchorOffset = sel.anchorOffset;
      this.lastFocusNode = sel.focusNode; this.lastFocusOffset = sel.focusOffset;
    },

    selectionInEditor: function() {
      var sel = window.getSelection();
      if (!sel.rangeCount) return false;
      var node = sel.getRangeAt(0).commonAncestorContainer;
      return contains(this.div, node);
    },

    focus: function() {
      if (this.cm.options.readOnly != "nocursor") this.div.focus();
    },
    blur: function() { this.div.blur(); },
    getField: function() { return this.div; },

    supportsTouch: function() { return true; },

    receivedFocus: function() {
      var input = this;
      if (this.selectionInEditor())
        this.pollSelection();
      else
        runInOp(this.cm, function() { input.cm.curOp.selectionChanged = true; });

      function poll() {
        if (input.cm.state.focused) {
          input.pollSelection();
          input.polling.set(input.cm.options.pollInterval, poll);
        }
      }
      this.polling.set(this.cm.options.pollInterval, poll);
    },

    selectionChanged: function() {
      var sel = window.getSelection();
      return sel.anchorNode != this.lastAnchorNode || sel.anchorOffset != this.lastAnchorOffset ||
        sel.focusNode != this.lastFocusNode || sel.focusOffset != this.lastFocusOffset;
    },

    pollSelection: function() {
      if (!this.composing && !this.gracePeriod && this.selectionChanged()) {
        var sel = window.getSelection(), cm = this.cm;
        this.rememberSelection();
        var anchor = domToPos(cm, sel.anchorNode, sel.anchorOffset);
        var head = domToPos(cm, sel.focusNode, sel.focusOffset);
        if (anchor && head) runInOp(cm, function() {
          setSelection(cm.doc, simpleSelection(anchor, head), sel_dontScroll);
          if (anchor.bad || head.bad) cm.curOp.selectionChanged = true;
        });
      }
    },

    pollContent: function() {
      var cm = this.cm, display = cm.display, sel = cm.doc.sel.primary();
      var from = sel.from(), to = sel.to();
      if (from.line < display.viewFrom || to.line > display.viewTo - 1) return false;

      var fromIndex;
      if (from.line == display.viewFrom || (fromIndex = findViewIndex(cm, from.line)) == 0) {
        var fromLine = lineNo(display.view[0].line);
        var fromNode = display.view[0].node;
      } else {
        var fromLine = lineNo(display.view[fromIndex].line);
        var fromNode = display.view[fromIndex - 1].node.nextSibling;
      }
      var toIndex = findViewIndex(cm, to.line);
      if (toIndex == display.view.length - 1) {
        var toLine = display.viewTo - 1;
        var toNode = display.lineDiv.lastChild;
      } else {
        var toLine = lineNo(display.view[toIndex + 1].line) - 1;
        var toNode = display.view[toIndex + 1].node.previousSibling;
      }

      var newText = splitLines(domTextBetween(cm, fromNode, toNode, fromLine, toLine));
      var oldText = getBetween(cm.doc, Pos(fromLine, 0), Pos(toLine, getLine(cm.doc, toLine).text.length));
      while (newText.length > 1 && oldText.length > 1) {
        if (lst(newText) == lst(oldText)) { newText.pop(); oldText.pop(); toLine--; }
        else if (newText[0] == oldText[0]) { newText.shift(); oldText.shift(); fromLine++; }
        else break;
      }

      var cutFront = 0, cutEnd = 0;
      var newTop = newText[0], oldTop = oldText[0], maxCutFront = Math.min(newTop.length, oldTop.length);
      while (cutFront < maxCutFront && newTop.charCodeAt(cutFront) == oldTop.charCodeAt(cutFront))
        ++cutFront;
      var newBot = lst(newText), oldBot = lst(oldText);
      var maxCutEnd = Math.min(newBot.length - (newText.length == 1 ? cutFront : 0),
                               oldBot.length - (oldText.length == 1 ? cutFront : 0));
      while (cutEnd < maxCutEnd &&
             newBot.charCodeAt(newBot.length - cutEnd - 1) == oldBot.charCodeAt(oldBot.length - cutEnd - 1))
        ++cutEnd;

      newText[newText.length - 1] = newBot.slice(0, newBot.length - cutEnd);
      newText[0] = newText[0].slice(cutFront);

      var chFrom = Pos(fromLine, cutFront);
      var chTo = Pos(toLine, oldText.length ? lst(oldText).length - cutEnd : 0);
      if (newText.length > 1 || newText[0] || cmp(chFrom, chTo)) {
        replaceRange(cm.doc, newText, chFrom, chTo, "+input");
        return true;
      }
    },

    ensurePolled: function() {
      this.forceCompositionEnd();
    },
    reset: function() {
      this.forceCompositionEnd();
    },
    forceCompositionEnd: function() {
      if (!this.composing || this.composing.handled) return;
      this.applyComposition(this.composing);
      this.composing.handled = true;
      this.div.blur();
      this.div.focus();
    },
    applyComposition: function(composing) {
      if (composing.data && composing.data != composing.startData)
        operation(this.cm, applyTextInput)(this.cm, composing.data, 0, composing.sel);
    },

    setUneditable: function(node) {
      node.setAttribute("contenteditable", "false");
    },

    onKeyPress: function(e) {
      e.preventDefault();
      operation(this.cm, applyTextInput)(this.cm, String.fromCharCode(e.charCode == null ? e.keyCode : e.charCode), 0);
    },

    onContextMenu: nothing,
    resetPosition: nothing,

    needsContentAttribute: true
  }, ContentEditableInput.prototype);

  function posToDOM(cm, pos) {
    var view = findViewForLine(cm, pos.line);
    if (!view || view.hidden) return null;
    var line = getLine(cm.doc, pos.line);
    var info = mapFromLineView(view, line, pos.line);

    var order = getOrder(line), side = "left";
    if (order) {
      var partPos = getBidiPartAt(order, pos.ch);
      side = partPos % 2 ? "right" : "left";
    }
    var result = nodeAndOffsetInLineMap(info.map, pos.ch, side);
    result.offset = result.collapse == "right" ? result.end : result.start;
    return result;
  }

  function badPos(pos, bad) { if (bad) pos.bad = true; return pos; }

  function domToPos(cm, node, offset) {
    var lineNode;
    if (node == cm.display.lineDiv) {
      lineNode = cm.display.lineDiv.childNodes[offset];
      if (!lineNode) return badPos(cm.clipPos(Pos(cm.display.viewTo - 1)), true);
      node = null; offset = 0;
    } else {
      for (lineNode = node;; lineNode = lineNode.parentNode) {
        if (!lineNode || lineNode == cm.display.lineDiv) return null;
        if (lineNode.parentNode && lineNode.parentNode == cm.display.lineDiv) break;
      }
    }
    for (var i = 0; i < cm.display.view.length; i++) {
      var lineView = cm.display.view[i];
      if (lineView.node == lineNode)
        return locateNodeInLineView(lineView, node, offset);
    }
  }

  function locateNodeInLineView(lineView, node, offset) {
    var wrapper = lineView.text.firstChild, bad = false;
    if (!node || !contains(wrapper, node)) return badPos(Pos(lineNo(lineView.line), 0), true);
    if (node == wrapper) {
      bad = true;
      node = wrapper.childNodes[offset];
      offset = 0;
      if (!node) {
        var line = lineView.rest ? lst(lineView.rest) : lineView.line;
        return badPos(Pos(lineNo(line), line.text.length), bad);
      }
    }

    var textNode = node.nodeType == 3 ? node : null, topNode = node;
    if (!textNode && node.childNodes.length == 1 && node.firstChild.nodeType == 3) {
      textNode = node.firstChild;
      if (offset) offset = textNode.nodeValue.length;
    }
    while (topNode.parentNode != wrapper) topNode = topNode.parentNode;
    var measure = lineView.measure, maps = measure.maps;

    function find(textNode, topNode, offset) {
      for (var i = -1; i < (maps ? maps.length : 0); i++) {
        var map = i < 0 ? measure.map : maps[i];
        for (var j = 0; j < map.length; j += 3) {
          var curNode = map[j + 2];
          if (curNode == textNode || curNode == topNode) {
            var line = lineNo(i < 0 ? lineView.line : lineView.rest[i]);
            var ch = map[j] + offset;
            if (offset < 0 || curNode != textNode) ch = map[j + (offset ? 1 : 0)];
            return Pos(line, ch);
          }
        }
      }
    }
    var found = find(textNode, topNode, offset);
    if (found) return badPos(found, bad);

    // FIXME this is all really shaky. might handle the few cases it needs to handle, but likely to cause problems
    for (var after = topNode.nextSibling, dist = textNode ? textNode.nodeValue.length - offset : 0; after; after = after.nextSibling) {
      found = find(after, after.firstChild, 0);
      if (found)
        return badPos(Pos(found.line, found.ch - dist), bad);
      else
        dist += after.textContent.length;
    }
    for (var before = topNode.previousSibling, dist = offset; before; before = before.previousSibling) {
      found = find(before, before.firstChild, -1);
      if (found)
        return badPos(Pos(found.line, found.ch + dist), bad);
      else
        dist += after.textContent.length;
    }
  }

  function domTextBetween(cm, from, to, fromLine, toLine) {
    var text = "", closing = false;
    function recognizeMarker(id) { return function(marker) { return marker.id == id; }; }
    function walk(node) {
      if (node.nodeType == 1) {
        var cmText = node.getAttribute("cm-text");
        if (cmText != null) {
          if (cmText == "") cmText = node.textContent.replace(/\u200b/g, "");
          text += cmText;
          return;
        }
        var markerID = node.getAttribute("cm-marker"), range;
        if (markerID) {
          var found = cm.findMarks(Pos(fromLine, 0), Pos(toLine + 1, 0), recognizeMarker(+markerID));
          if (found.length && (range = found[0].find()))
            text += getBetween(cm.doc, range.from, range.to).join("\n");
          return;
        }
        if (node.getAttribute("contenteditable") == "false") return;
        for (var i = 0; i < node.childNodes.length; i++)
          walk(node.childNodes[i]);
        if (/^(pre|div|p)$/i.test(node.nodeName))
          closing = true;
      } else if (node.nodeType == 3) {
        var val = node.nodeValue;
        if (!val) return;
        if (closing) {
          text += "\n";
          closing = false;
        }
        text += val;
      }
    }
    for (;;) {
      walk(from);
      if (from == to) break;
      from = from.nextSibling;
    }
    return text;
  }

  CodeMirror.inputStyles = {"textarea": TextareaInput, "contenteditable": ContentEditableInput};

  // SELECTION / CURSOR

  // Selection objects are immutable. A new one is created every time
  // the selection changes. A selection is one or more non-overlapping
  // (and non-touching) ranges, sorted, and an integer that indicates
  // which one is the primary selection (the one that's scrolled into
  // view, that getCursor returns, etc).
  function Selection(ranges, primIndex) {
    this.ranges = ranges;
    this.primIndex = primIndex;
  }

  Selection.prototype = {
    primary: function() { return this.ranges[this.primIndex]; },
    equals: function(other) {
      if (other == this) return true;
      if (other.primIndex != this.primIndex || other.ranges.length != this.ranges.length) return false;
      for (var i = 0; i < this.ranges.length; i++) {
        var here = this.ranges[i], there = other.ranges[i];
        if (cmp(here.anchor, there.anchor) != 0 || cmp(here.head, there.head) != 0) return false;
      }
      return true;
    },
    deepCopy: function() {
      for (var out = [], i = 0; i < this.ranges.length; i++)
        out[i] = new Range(copyPos(this.ranges[i].anchor), copyPos(this.ranges[i].head));
      return new Selection(out, this.primIndex);
    },
    somethingSelected: function() {
      for (var i = 0; i < this.ranges.length; i++)
        if (!this.ranges[i].empty()) return true;
      return false;
    },
    contains: function(pos, end) {
      if (!end) end = pos;
      for (var i = 0; i < this.ranges.length; i++) {
        var range = this.ranges[i];
        if (cmp(end, range.from()) >= 0 && cmp(pos, range.to()) <= 0)
          return i;
      }
      return -1;
    }
  };

  function Range(anchor, head) {
    this.anchor = anchor; this.head = head;
  }

  Range.prototype = {
    from: function() { return minPos(this.anchor, this.head); },
    to: function() { return maxPos(this.anchor, this.head); },
    empty: function() {
      return this.head.line == this.anchor.line && this.head.ch == this.anchor.ch;
    }
  };

  // Take an unsorted, potentially overlapping set of ranges, and
  // build a selection out of it. 'Consumes' ranges array (modifying
  // it).
  function normalizeSelection(ranges, primIndex) {
    var prim = ranges[primIndex];
    ranges.sort(function(a, b) { return cmp(a.from(), b.from()); });
    primIndex = indexOf(ranges, prim);
    for (var i = 1; i < ranges.length; i++) {
      var cur = ranges[i], prev = ranges[i - 1];
      if (cmp(prev.to(), cur.from()) >= 0) {
        var from = minPos(prev.from(), cur.from()), to = maxPos(prev.to(), cur.to());
        var inv = prev.empty() ? cur.from() == cur.head : prev.from() == prev.head;
        if (i <= primIndex) --primIndex;
        ranges.splice(--i, 2, new Range(inv ? to : from, inv ? from : to));
      }
    }
    return new Selection(ranges, primIndex);
  }

  function simpleSelection(anchor, head) {
    return new Selection([new Range(anchor, head || anchor)], 0);
  }

  // Most of the external API clips given positions to make sure they
  // actually exist within the document.
  function clipLine(doc, n) {return Math.max(doc.first, Math.min(n, doc.first + doc.size - 1));}
  function clipPos(doc, pos) {
    if (pos.line < doc.first) return Pos(doc.first, 0);
    var last = doc.first + doc.size - 1;
    if (pos.line > last) return Pos(last, getLine(doc, last).text.length);
    return clipToLen(pos, getLine(doc, pos.line).text.length);
  }
  function clipToLen(pos, linelen) {
    var ch = pos.ch;
    if (ch == null || ch > linelen) return Pos(pos.line, linelen);
    else if (ch < 0) return Pos(pos.line, 0);
    else return pos;
  }
  function isLine(doc, l) {return l >= doc.first && l < doc.first + doc.size;}
  function clipPosArray(doc, array) {
    for (var out = [], i = 0; i < array.length; i++) out[i] = clipPos(doc, array[i]);
    return out;
  }

  // SELECTION UPDATES

  // The 'scroll' parameter given to many of these indicated whether
  // the new cursor position should be scrolled into view after
  // modifying the selection.

  // If shift is held or the extend flag is set, extends a range to
  // include a given position (and optionally a second position).
  // Otherwise, simply returns the range between the given positions.
  // Used for cursor motion and such.
  function extendRange(doc, range, head, other) {
    if (doc.cm && doc.cm.display.shift || doc.extend) {
      var anchor = range.anchor;
      if (other) {
        var posBefore = cmp(head, anchor) < 0;
        if (posBefore != (cmp(other, anchor) < 0)) {
          anchor = head;
          head = other;
        } else if (posBefore != (cmp(head, other) < 0)) {
          head = other;
        }
      }
      return new Range(anchor, head);
    } else {
      return new Range(other || head, head);
    }
  }

  // Extend the primary selection range, discard the rest.
  function extendSelection(doc, head, other, options) {
    setSelection(doc, new Selection([extendRange(doc, doc.sel.primary(), head, other)], 0), options);
  }

  // Extend all selections (pos is an array of selections with length
  // equal the number of selections)
  function extendSelections(doc, heads, options) {
    for (var out = [], i = 0; i < doc.sel.ranges.length; i++)
      out[i] = extendRange(doc, doc.sel.ranges[i], heads[i], null);
    var newSel = normalizeSelection(out, doc.sel.primIndex);
    setSelection(doc, newSel, options);
  }

  // Updates a single range in the selection.
  function replaceOneSelection(doc, i, range, options) {
    var ranges = doc.sel.ranges.slice(0);
    ranges[i] = range;
    setSelection(doc, normalizeSelection(ranges, doc.sel.primIndex), options);
  }

  // Reset the selection to a single range.
  function setSimpleSelection(doc, anchor, head, options) {
    setSelection(doc, simpleSelection(anchor, head), options);
  }

  // Give beforeSelectionChange handlers a change to influence a
  // selection update.
  function filterSelectionChange(doc, sel) {
    var obj = {
      ranges: sel.ranges,
      update: function(ranges) {
        this.ranges = [];
        for (var i = 0; i < ranges.length; i++)
          this.ranges[i] = new Range(clipPos(doc, ranges[i].anchor),
                                     clipPos(doc, ranges[i].head));
      }
    };
    signal(doc, "beforeSelectionChange", doc, obj);
    if (doc.cm) signal(doc.cm, "beforeSelectionChange", doc.cm, obj);
    if (obj.ranges != sel.ranges) return normalizeSelection(obj.ranges, obj.ranges.length - 1);
    else return sel;
  }

  function setSelectionReplaceHistory(doc, sel, options) {
    var done = doc.history.done, last = lst(done);
    if (last && last.ranges) {
      done[done.length - 1] = sel;
      setSelectionNoUndo(doc, sel, options);
    } else {
      setSelection(doc, sel, options);
    }
  }

  // Set a new selection.
  function setSelection(doc, sel, options) {
    setSelectionNoUndo(doc, sel, options);
    addSelectionToHistory(doc, doc.sel, doc.cm ? doc.cm.curOp.id : NaN, options);
  }

  function setSelectionNoUndo(doc, sel, options) {
    if (hasHandler(doc, "beforeSelectionChange") || doc.cm && hasHandler(doc.cm, "beforeSelectionChange"))
      sel = filterSelectionChange(doc, sel);

    var bias = options && options.bias ||
      (cmp(sel.primary().head, doc.sel.primary().head) < 0 ? -1 : 1);
    setSelectionInner(doc, skipAtomicInSelection(doc, sel, bias, true));

    if (!(options && options.scroll === false) && doc.cm)
      ensureCursorVisible(doc.cm);
  }

  function setSelectionInner(doc, sel) {
    if (sel.equals(doc.sel)) return;

    doc.sel = sel;

    if (doc.cm) {
      doc.cm.curOp.updateInput = doc.cm.curOp.selectionChanged = true;
      signalCursorActivity(doc.cm);
    }
    signalLater(doc, "cursorActivity", doc);
  }

  // Verify that the selection does not partially select any atomic
  // marked ranges.
  function reCheckSelection(doc) {
    setSelectionInner(doc, skipAtomicInSelection(doc, doc.sel, null, false), sel_dontScroll);
  }

  // Return a selection that does not partially select any atomic
  // ranges.
  function skipAtomicInSelection(doc, sel, bias, mayClear) {
    var out;
    for (var i = 0; i < sel.ranges.length; i++) {
      var range = sel.ranges[i];
      var newAnchor = skipAtomic(doc, range.anchor, bias, mayClear);
      var newHead = skipAtomic(doc, range.head, bias, mayClear);
      if (out || newAnchor != range.anchor || newHead != range.head) {
        if (!out) out = sel.ranges.slice(0, i);
        out[i] = new Range(newAnchor, newHead);
      }
    }
    return out ? normalizeSelection(out, sel.primIndex) : sel;
  }

  // Ensure a given position is not inside an atomic range.
  function skipAtomic(doc, pos, bias, mayClear) {
    var flipped = false, curPos = pos;
    var dir = bias || 1;
    doc.cantEdit = false;
    search: for (;;) {
      var line = getLine(doc, curPos.line);
      if (line.markedSpans) {
        for (var i = 0; i < line.markedSpans.length; ++i) {
          var sp = line.markedSpans[i], m = sp.marker;
          if ((sp.from == null || (m.inclusiveLeft ? sp.from <= curPos.ch : sp.from < curPos.ch)) &&
              (sp.to == null || (m.inclusiveRight ? sp.to >= curPos.ch : sp.to > curPos.ch))) {
            if (mayClear) {
              signal(m, "beforeCursorEnter");
              if (m.explicitlyCleared) {
                if (!line.markedSpans) break;
                else {--i; continue;}
              }
            }
            if (!m.atomic) continue;
            var newPos = m.find(dir < 0 ? -1 : 1);
            if (cmp(newPos, curPos) == 0) {
              newPos.ch += dir;
              if (newPos.ch < 0) {
                if (newPos.line > doc.first) newPos = clipPos(doc, Pos(newPos.line - 1));
                else newPos = null;
              } else if (newPos.ch > line.text.length) {
                if (newPos.line < doc.first + doc.size - 1) newPos = Pos(newPos.line + 1, 0);
                else newPos = null;
              }
              if (!newPos) {
                if (flipped) {
                  // Driven in a corner -- no valid cursor position found at all
                  // -- try again *with* clearing, if we didn't already
                  if (!mayClear) return skipAtomic(doc, pos, bias, true);
                  // Otherwise, turn off editing until further notice, and return the start of the doc
                  doc.cantEdit = true;
                  return Pos(doc.first, 0);
                }
                flipped = true; newPos = pos; dir = -dir;
              }
            }
            curPos = newPos;
            continue search;
          }
        }
      }
      return curPos;
    }
  }

  // SELECTION DRAWING

  function updateSelection(cm) {
    cm.display.input.showSelection(cm.display.input.prepareSelection());
  }

  function prepareSelection(cm, primary) {
    var doc = cm.doc, result = {};
    var curFragment = result.cursors = document.createDocumentFragment();
    var selFragment = result.selection = document.createDocumentFragment();

    for (var i = 0; i < doc.sel.ranges.length; i++) {
      if (primary === false && i == doc.sel.primIndex) continue;
      var range = doc.sel.ranges[i];
      var collapsed = range.empty();
      if (collapsed || cm.options.showCursorWhenSelecting)
        drawSelectionCursor(cm, range, curFragment);
      if (!collapsed)
        drawSelectionRange(cm, range, selFragment);
    }
    return result;
  }

  // Draws a cursor for the given range
  function drawSelectionCursor(cm, range, output) {
    var pos = cursorCoords(cm, range.head, "div", null, null, !cm.options.singleCursorHeightPerLine);

    var cursor = output.appendChild(elt("div", "\u00a0", "CodeMirror-cursor"));
    cursor.style.left = pos.left + "px";
    cursor.style.top = pos.top + "px";
    cursor.style.height = Math.max(0, pos.bottom - pos.top) * cm.options.cursorHeight + "px";

    if (pos.other) {
      // Secondary cursor, shown when on a 'jump' in bi-directional text
      var otherCursor = output.appendChild(elt("div", "\u00a0", "CodeMirror-cursor CodeMirror-secondarycursor"));
      otherCursor.style.display = "";
      otherCursor.style.left = pos.other.left + "px";
      otherCursor.style.top = pos.other.top + "px";
      otherCursor.style.height = (pos.other.bottom - pos.other.top) * .85 + "px";
    }
  }

  // Draws the given range as a highlighted selection
  function drawSelectionRange(cm, range, output) {
    var display = cm.display, doc = cm.doc;
    var fragment = document.createDocumentFragment();
    var padding = paddingH(cm.display), leftSide = padding.left;
    var rightSide = Math.max(display.sizerWidth, displayWidth(cm) - display.sizer.offsetLeft) - padding.right;

    function add(left, top, width, bottom) {
      if (top < 0) top = 0;
      top = Math.round(top);
      bottom = Math.round(bottom);
      fragment.appendChild(elt("div", null, "CodeMirror-selected", "position: absolute; left: " + left +
                               "px; top: " + top + "px; width: " + (width == null ? rightSide - left : width) +
                               "px; height: " + (bottom - top) + "px"));
    }

    function drawForLine(line, fromArg, toArg) {
      var lineObj = getLine(doc, line);
      var lineLen = lineObj.text.length;
      var start, end;
      function coords(ch, bias) {
        return charCoords(cm, Pos(line, ch), "div", lineObj, bias);
      }

      iterateBidiSections(getOrder(lineObj), fromArg || 0, toArg == null ? lineLen : toArg, function(from, to, dir) {
        var leftPos = coords(from, "left"), rightPos, left, right;
        if (from == to) {
          rightPos = leftPos;
          left = right = leftPos.left;
        } else {
          rightPos = coords(to - 1, "right");
          if (dir == "rtl") { var tmp = leftPos; leftPos = rightPos; rightPos = tmp; }
          left = leftPos.left;
          right = rightPos.right;
        }
        if (fromArg == null && from == 0) left = leftSide;
        if (rightPos.top - leftPos.top > 3) { // Different lines, draw top part
          add(left, leftPos.top, null, leftPos.bottom);
          left = leftSide;
          if (leftPos.bottom < rightPos.top) add(left, leftPos.bottom, null, rightPos.top);
        }
        if (toArg == null && to == lineLen) right = rightSide;
        if (!start || leftPos.top < start.top || leftPos.top == start.top && leftPos.left < start.left)
          start = leftPos;
        if (!end || rightPos.bottom > end.bottom || rightPos.bottom == end.bottom && rightPos.right > end.right)
          end = rightPos;
        if (left < leftSide + 1) left = leftSide;
        add(left, rightPos.top, right - left, rightPos.bottom);
      });
      return {start: start, end: end};
    }

    var sFrom = range.from(), sTo = range.to();
    if (sFrom.line == sTo.line) {
      drawForLine(sFrom.line, sFrom.ch, sTo.ch);
    } else {
      var fromLine = getLine(doc, sFrom.line), toLine = getLine(doc, sTo.line);
      var singleVLine = visualLine(fromLine) == visualLine(toLine);
      var leftEnd = drawForLine(sFrom.line, sFrom.ch, singleVLine ? fromLine.text.length + 1 : null).end;
      var rightStart = drawForLine(sTo.line, singleVLine ? 0 : null, sTo.ch).start;
      if (singleVLine) {
        if (leftEnd.top < rightStart.top - 2) {
          add(leftEnd.right, leftEnd.top, null, leftEnd.bottom);
          add(leftSide, rightStart.top, rightStart.left, rightStart.bottom);
        } else {
          add(leftEnd.right, leftEnd.top, rightStart.left - leftEnd.right, leftEnd.bottom);
        }
      }
      if (leftEnd.bottom < rightStart.top)
        add(leftSide, leftEnd.bottom, null, rightStart.top);
    }

    output.appendChild(fragment);
  }

  // Cursor-blinking
  function restartBlink(cm) {
    if (!cm.state.focused) return;
    var display = cm.display;
    clearInterval(display.blinker);
    var on = true;
    display.cursorDiv.style.visibility = "";
    if (cm.options.cursorBlinkRate > 0)
      display.blinker = setInterval(function() {
        display.cursorDiv.style.visibility = (on = !on) ? "" : "hidden";
      }, cm.options.cursorBlinkRate);
    else if (cm.options.cursorBlinkRate < 0)
      display.cursorDiv.style.visibility = "hidden";
  }

  // HIGHLIGHT WORKER

  function startWorker(cm, time) {
    if (cm.doc.mode.startState && cm.doc.frontier < cm.display.viewTo)
      cm.state.highlight.set(time, bind(highlightWorker, cm));
  }

  function highlightWorker(cm) {
    var doc = cm.doc;
    if (doc.frontier < doc.first) doc.frontier = doc.first;
    if (doc.frontier >= cm.display.viewTo) return;
    var end = +new Date + cm.options.workTime;
    var state = copyState(doc.mode, getStateBefore(cm, doc.frontier));
    var changedLines = [];

    doc.iter(doc.frontier, Math.min(doc.first + doc.size, cm.display.viewTo + 500), function(line) {
      if (doc.frontier >= cm.display.viewFrom) { // Visible
        var oldStyles = line.styles;
        var highlighted = highlightLine(cm, line, state, true);
        line.styles = highlighted.styles;
        var oldCls = line.styleClasses, newCls = highlighted.classes;
        if (newCls) line.styleClasses = newCls;
        else if (oldCls) line.styleClasses = null;
        var ischange = !oldStyles || oldStyles.length != line.styles.length ||
          oldCls != newCls && (!oldCls || !newCls || oldCls.bgClass != newCls.bgClass || oldCls.textClass != newCls.textClass);
        for (var i = 0; !ischange && i < oldStyles.length; ++i) ischange = oldStyles[i] != line.styles[i];
        if (ischange) changedLines.push(doc.frontier);
        line.stateAfter = copyState(doc.mode, state);
      } else {
        processLine(cm, line.text, state);
        line.stateAfter = doc.frontier % 5 == 0 ? copyState(doc.mode, state) : null;
      }
      ++doc.frontier;
      if (+new Date > end) {
        startWorker(cm, cm.options.workDelay);
        return true;
      }
    });
    if (changedLines.length) runInOp(cm, function() {
      for (var i = 0; i < changedLines.length; i++)
        regLineChange(cm, changedLines[i], "text");
    });
  }

  // Finds the line to start with when starting a parse. Tries to
  // find a line with a stateAfter, so that it can start with a
  // valid state. If that fails, it returns the line with the
  // smallest indentation, which tends to need the least context to
  // parse correctly.
  function findStartLine(cm, n, precise) {
    var minindent, minline, doc = cm.doc;
    var lim = precise ? -1 : n - (cm.doc.mode.innerMode ? 1000 : 100);
    for (var search = n; search > lim; --search) {
      if (search <= doc.first) return doc.first;
      var line = getLine(doc, search - 1);
      if (line.stateAfter && (!precise || search <= doc.frontier)) return search;
      var indented = countColumn(line.text, null, cm.options.tabSize);
      if (minline == null || minindent > indented) {
        minline = search - 1;
        minindent = indented;
      }
    }
    return minline;
  }

  function getStateBefore(cm, n, precise) {
    var doc = cm.doc, display = cm.display;
    if (!doc.mode.startState) return true;
    var pos = findStartLine(cm, n, precise), state = pos > doc.first && getLine(doc, pos-1).stateAfter;
    if (!state) state = startState(doc.mode);
    else state = copyState(doc.mode, state);
    doc.iter(pos, n, function(line) {
      processLine(cm, line.text, state);
      var save = pos == n - 1 || pos % 5 == 0 || pos >= display.viewFrom && pos < display.viewTo;
      line.stateAfter = save ? copyState(doc.mode, state) : null;
      ++pos;
    });
    if (precise) doc.frontier = pos;
    return state;
  }

  // POSITION MEASUREMENT

  function paddingTop(display) {return display.lineSpace.offsetTop;}
  function paddingVert(display) {return display.mover.offsetHeight - display.lineSpace.offsetHeight;}
  function paddingH(display) {
    if (display.cachedPaddingH) return display.cachedPaddingH;
    var e = removeChildrenAndAdd(display.measure, elt("pre", "x"));
    var style = window.getComputedStyle ? window.getComputedStyle(e) : e.currentStyle;
    var data = {left: parseInt(style.paddingLeft), right: parseInt(style.paddingRight)};
    if (!isNaN(data.left) && !isNaN(data.right)) display.cachedPaddingH = data;
    return data;
  }

  function scrollGap(cm) { return scrollerGap - cm.display.nativeBarWidth; }
  function displayWidth(cm) {
    return cm.display.scroller.clientWidth - scrollGap(cm) - cm.display.barWidth;
  }
  function displayHeight(cm) {
    return cm.display.scroller.clientHeight - scrollGap(cm) - cm.display.barHeight;
  }

  // Ensure the lineView.wrapping.heights array is populated. This is
  // an array of bottom offsets for the lines that make up a drawn
  // line. When lineWrapping is on, there might be more than one
  // height.
  function ensureLineHeights(cm, lineView, rect) {
    var wrapping = cm.options.lineWrapping;
    var curWidth = wrapping && displayWidth(cm);
    if (!lineView.measure.heights || wrapping && lineView.measure.width != curWidth) {
      var heights = lineView.measure.heights = [];
      if (wrapping) {
        lineView.measure.width = curWidth;
        var rects = lineView.text.firstChild.getClientRects();
        for (var i = 0; i < rects.length - 1; i++) {
          var cur = rects[i], next = rects[i + 1];
          if (Math.abs(cur.bottom - next.bottom) > 2)
            heights.push((cur.bottom + next.top) / 2 - rect.top);
        }
      }
      heights.push(rect.bottom - rect.top);
    }
  }

  // Find a line map (mapping character offsets to text nodes) and a
  // measurement cache for the given line number. (A line view might
  // contain multiple lines when collapsed ranges are present.)
  function mapFromLineView(lineView, line, lineN) {
    if (lineView.line == line)
      return {map: lineView.measure.map, cache: lineView.measure.cache};
    for (var i = 0; i < lineView.rest.length; i++)
      if (lineView.rest[i] == line)
        return {map: lineView.measure.maps[i], cache: lineView.measure.caches[i]};
    for (var i = 0; i < lineView.rest.length; i++)
      if (lineNo(lineView.rest[i]) > lineN)
        return {map: lineView.measure.maps[i], cache: lineView.measure.caches[i], before: true};
  }

  // Render a line into the hidden node display.externalMeasured. Used
  // when measurement is needed for a line that's not in the viewport.
  function updateExternalMeasurement(cm, line) {
    line = visualLine(line);
    var lineN = lineNo(line);
    var view = cm.display.externalMeasured = new LineView(cm.doc, line, lineN);
    view.lineN = lineN;
    var built = view.built = buildLineContent(cm, view);
    view.text = built.pre;
    removeChildrenAndAdd(cm.display.lineMeasure, built.pre);
    return view;
  }

  // Get a {top, bottom, left, right} box (in line-local coordinates)
  // for a given character.
  function measureChar(cm, line, ch, bias) {
    return measureCharPrepared(cm, prepareMeasureForLine(cm, line), ch, bias);
  }

  // Find a line view that corresponds to the given line number.
  function findViewForLine(cm, lineN) {
    if (lineN >= cm.display.viewFrom && lineN < cm.display.viewTo)
      return cm.display.view[findViewIndex(cm, lineN)];
    var ext = cm.display.externalMeasured;
    if (ext && lineN >= ext.lineN && lineN < ext.lineN + ext.size)
      return ext;
  }

  // Measurement can be split in two steps, the set-up work that
  // applies to the whole line, and the measurement of the actual
  // character. Functions like coordsChar, that need to do a lot of
  // measurements in a row, can thus ensure that the set-up work is
  // only done once.
  function prepareMeasureForLine(cm, line) {
    var lineN = lineNo(line);
    var view = findViewForLine(cm, lineN);
    if (view && !view.text)
      view = null;
    else if (view && view.changes)
      updateLineForChanges(cm, view, lineN, getDimensions(cm));
    if (!view)
      view = updateExternalMeasurement(cm, line);

    var info = mapFromLineView(view, line, lineN);
    return {
      line: line, view: view, rect: null,
      map: info.map, cache: info.cache, before: info.before,
      hasHeights: false
    };
  }

  // Given a prepared measurement object, measures the position of an
  // actual character (or fetches it from the cache).
  function measureCharPrepared(cm, prepared, ch, bias, varHeight) {
    if (prepared.before) ch = -1;
    var key = ch + (bias || ""), found;
    if (prepared.cache.hasOwnProperty(key)) {
      found = prepared.cache[key];
    } else {
      if (!prepared.rect)
        prepared.rect = prepared.view.text.getBoundingClientRect();
      if (!prepared.hasHeights) {
        ensureLineHeights(cm, prepared.view, prepared.rect);
        prepared.hasHeights = true;
      }
      found = measureCharInner(cm, prepared, ch, bias);
      if (!found.bogus) prepared.cache[key] = found;
    }
    return {left: found.left, right: found.right,
            top: varHeight ? found.rtop : found.top,
            bottom: varHeight ? found.rbottom : found.bottom};
  }

  var nullRect = {left: 0, right: 0, top: 0, bottom: 0};

  function nodeAndOffsetInLineMap(map, ch, bias) {
    var node, start, end, collapse;
    // First, search the line map for the text node corresponding to,
    // or closest to, the target character.
    for (var i = 0; i < map.length; i += 3) {
      var mStart = map[i], mEnd = map[i + 1];
      if (ch < mStart) {
        start = 0; end = 1;
        collapse = "left";
      } else if (ch < mEnd) {
        start = ch - mStart;
        end = start + 1;
      } else if (i == map.length - 3 || ch == mEnd && map[i + 3] > ch) {
        end = mEnd - mStart;
        start = end - 1;
        if (ch >= mEnd) collapse = "right";
      }
      if (start != null) {
        node = map[i + 2];
        if (mStart == mEnd && bias == (node.insertLeft ? "left" : "right"))
          collapse = bias;
        if (bias == "left" && start == 0)
          while (i && map[i - 2] == map[i - 3] && map[i - 1].insertLeft) {
            node = map[(i -= 3) + 2];
            collapse = "left";
          }
        if (bias == "right" && start == mEnd - mStart)
          while (i < map.length - 3 && map[i + 3] == map[i + 4] && !map[i + 5].insertLeft) {
            node = map[(i += 3) + 2];
            collapse = "right";
          }
        break;
      }
    }
    return {node: node, start: start, end: end, collapse: collapse, coverStart: mStart, coverEnd: mEnd};
  }

  function measureCharInner(cm, prepared, ch, bias) {
    var place = nodeAndOffsetInLineMap(prepared.map, ch, bias);
    var node = place.node, start = place.start, end = place.end, collapse = place.collapse;

    var rect;
    if (node.nodeType == 3) { // If it is a text node, use a range to retrieve the coordinates.
      for (var i = 0; i < 4; i++) { // Retry a maximum of 4 times when nonsense rectangles are returned
        while (start && isExtendingChar(prepared.line.text.charAt(place.coverStart + start))) --start;
        while (place.coverStart + end < place.coverEnd && isExtendingChar(prepared.line.text.charAt(place.coverStart + end))) ++end;
        if (ie && ie_version < 9 && start == 0 && end == place.coverEnd - place.coverStart) {
          rect = node.parentNode.getBoundingClientRect();
        } else if (ie && cm.options.lineWrapping) {
          var rects = range(node, start, end).getClientRects();
          if (rects.length)
            rect = rects[bias == "right" ? rects.length - 1 : 0];
          else
            rect = nullRect;
        } else {
          rect = range(node, start, end).getBoundingClientRect() || nullRect;
        }
        if (rect.left || rect.right || start == 0) break;
        end = start;
        start = start - 1;
        collapse = "right";
      }
      if (ie && ie_version < 11) rect = maybeUpdateRectForZooming(cm.display.measure, rect);
    } else { // If it is a widget, simply get the box for the whole widget.
      if (start > 0) collapse = bias = "right";
      var rects;
      if (cm.options.lineWrapping && (rects = node.getClientRects()).length > 1)
        rect = rects[bias == "right" ? rects.length - 1 : 0];
      else
        rect = node.getBoundingClientRect();
    }
    if (ie && ie_version < 9 && !start && (!rect || !rect.left && !rect.right)) {
      var rSpan = node.parentNode.getClientRects()[0];
      if (rSpan)
        rect = {left: rSpan.left, right: rSpan.left + charWidth(cm.display), top: rSpan.top, bottom: rSpan.bottom};
      else
        rect = nullRect;
    }

    var rtop = rect.top - prepared.rect.top, rbot = rect.bottom - prepared.rect.top;
    var mid = (rtop + rbot) / 2;
    var heights = prepared.view.measure.heights;
    for (var i = 0; i < heights.length - 1; i++)
      if (mid < heights[i]) break;
    var top = i ? heights[i - 1] : 0, bot = heights[i];
    var result = {left: (collapse == "right" ? rect.right : rect.left) - prepared.rect.left,
                  right: (collapse == "left" ? rect.left : rect.right) - prepared.rect.left,
                  top: top, bottom: bot};
    if (!rect.left && !rect.right) result.bogus = true;
    if (!cm.options.singleCursorHeightPerLine) { result.rtop = rtop; result.rbottom = rbot; }

    return result;
  }

  // Work around problem with bounding client rects on ranges being
  // returned incorrectly when zoomed on IE10 and below.
  function maybeUpdateRectForZooming(measure, rect) {
    if (!window.screen || screen.logicalXDPI == null ||
        screen.logicalXDPI == screen.deviceXDPI || !hasBadZoomedRects(measure))
      return rect;
    var scaleX = screen.logicalXDPI / screen.deviceXDPI;
    var scaleY = screen.logicalYDPI / screen.deviceYDPI;
    return {left: rect.left * scaleX, right: rect.right * scaleX,
            top: rect.top * scaleY, bottom: rect.bottom * scaleY};
  }

  function clearLineMeasurementCacheFor(lineView) {
    if (lineView.measure) {
      lineView.measure.cache = {};
      lineView.measure.heights = null;
      if (lineView.rest) for (var i = 0; i < lineView.rest.length; i++)
        lineView.measure.caches[i] = {};
    }
  }

  function clearLineMeasurementCache(cm) {
    cm.display.externalMeasure = null;
    removeChildren(cm.display.lineMeasure);
    for (var i = 0; i < cm.display.view.length; i++)
      clearLineMeasurementCacheFor(cm.display.view[i]);
  }

  function clearCaches(cm) {
    clearLineMeasurementCache(cm);
    cm.display.cachedCharWidth = cm.display.cachedTextHeight = cm.display.cachedPaddingH = null;
    if (!cm.options.lineWrapping) cm.display.maxLineChanged = true;
    cm.display.lineNumChars = null;
  }

  function pageScrollX() { return window.pageXOffset || (document.documentElement || document.body).scrollLeft; }
  function pageScrollY() { return window.pageYOffset || (document.documentElement || document.body).scrollTop; }

  // Converts a {top, bottom, left, right} box from line-local
  // coordinates into another coordinate system. Context may be one of
  // "line", "div" (display.lineDiv), "local"/null (editor), "window",
  // or "page".
  function intoCoordSystem(cm, lineObj, rect, context) {
    if (lineObj.widgets) for (var i = 0; i < lineObj.widgets.length; ++i) if (lineObj.widgets[i].above) {
      var size = widgetHeight(lineObj.widgets[i]);
      rect.top += size; rect.bottom += size;
    }
    if (context == "line") return rect;
    if (!context) context = "local";
    var yOff = heightAtLine(lineObj);
    if (context == "local") yOff += paddingTop(cm.display);
    else yOff -= cm.display.viewOffset;
    if (context == "page" || context == "window") {
      var lOff = cm.display.lineSpace.getBoundingClientRect();
      yOff += lOff.top + (context == "window" ? 0 : pageScrollY());
      var xOff = lOff.left + (context == "window" ? 0 : pageScrollX());
      rect.left += xOff; rect.right += xOff;
    }
    rect.top += yOff; rect.bottom += yOff;
    return rect;
  }

  // Coverts a box from "div" coords to another coordinate system.
  // Context may be "window", "page", "div", or "local"/null.
  function fromCoordSystem(cm, coords, context) {
    if (context == "div") return coords;
    var left = coords.left, top = coords.top;
    // First move into "page" coordinate system
    if (context == "page") {
      left -= pageScrollX();
      top -= pageScrollY();
    } else if (context == "local" || !context) {
      var localBox = cm.display.sizer.getBoundingClientRect();
      left += localBox.left;
      top += localBox.top;
    }

    var lineSpaceBox = cm.display.lineSpace.getBoundingClientRect();
    return {left: left - lineSpaceBox.left, top: top - lineSpaceBox.top};
  }

  function charCoords(cm, pos, context, lineObj, bias) {
    if (!lineObj) lineObj = getLine(cm.doc, pos.line);
    return intoCoordSystem(cm, lineObj, measureChar(cm, lineObj, pos.ch, bias), context);
  }

  // Returns a box for a given cursor position, which may have an
  // 'other' property containing the position of the secondary cursor
  // on a bidi boundary.
  function cursorCoords(cm, pos, context, lineObj, preparedMeasure, varHeight) {
    lineObj = lineObj || getLine(cm.doc, pos.line);
    if (!preparedMeasure) preparedMeasure = prepareMeasureForLine(cm, lineObj);
    function get(ch, right) {
      var m = measureCharPrepared(cm, preparedMeasure, ch, right ? "right" : "left", varHeight);
      if (right) m.left = m.right; else m.right = m.left;
      return intoCoordSystem(cm, lineObj, m, context);
    }
    function getBidi(ch, partPos) {
      var part = order[partPos], right = part.level % 2;
      if (ch == bidiLeft(part) && partPos && part.level < order[partPos - 1].level) {
        part = order[--partPos];
        ch = bidiRight(part) - (part.level % 2 ? 0 : 1);
        right = true;
      } else if (ch == bidiRight(part) && partPos < order.length - 1 && part.level < order[partPos + 1].level) {
        part = order[++partPos];
        ch = bidiLeft(part) - part.level % 2;
        right = false;
      }
      if (right && ch == part.to && ch > part.from) return get(ch - 1);
      return get(ch, right);
    }
    var order = getOrder(lineObj), ch = pos.ch;
    if (!order) return get(ch);
    var partPos = getBidiPartAt(order, ch);
    var val = getBidi(ch, partPos);
    if (bidiOther != null) val.other = getBidi(ch, bidiOther);
    return val;
  }

  // Used to cheaply estimate the coordinates for a position. Used for
  // intermediate scroll updates.
  function estimateCoords(cm, pos) {
    var left = 0, pos = clipPos(cm.doc, pos);
    if (!cm.options.lineWrapping) left = charWidth(cm.display) * pos.ch;
    var lineObj = getLine(cm.doc, pos.line);
    var top = heightAtLine(lineObj) + paddingTop(cm.display);
    return {left: left, right: left, top: top, bottom: top + lineObj.height};
  }

  // Positions returned by coordsChar contain some extra information.
  // xRel is the relative x position of the input coordinates compared
  // to the found position (so xRel > 0 means the coordinates are to
  // the right of the character position, for example). When outside
  // is true, that means the coordinates lie outside the line's
  // vertical range.
  function PosWithInfo(line, ch, outside, xRel) {
    var pos = Pos(line, ch);
    pos.xRel = xRel;
    if (outside) pos.outside = true;
    return pos;
  }

  // Compute the character position closest to the given coordinates.
  // Input must be lineSpace-local ("div" coordinate system).
  function coordsChar(cm, x, y) {
    var doc = cm.doc;
    y += cm.display.viewOffset;
    if (y < 0) return PosWithInfo(doc.first, 0, true, -1);
    var lineN = lineAtHeight(doc, y), last = doc.first + doc.size - 1;
    if (lineN > last)
      return PosWithInfo(doc.first + doc.size - 1, getLine(doc, last).text.length, true, 1);
    if (x < 0) x = 0;

    var lineObj = getLine(doc, lineN);
    for (;;) {
      var found = coordsCharInner(cm, lineObj, lineN, x, y);
      var merged = collapsedSpanAtEnd(lineObj);
      var mergedPos = merged && merged.find(0, true);
      if (merged && (found.ch > mergedPos.from.ch || found.ch == mergedPos.from.ch && found.xRel > 0))
        lineN = lineNo(lineObj = mergedPos.to.line);
      else
        return found;
    }
  }

  function coordsCharInner(cm, lineObj, lineNo, x, y) {
    var innerOff = y - heightAtLine(lineObj);
    var wrongLine = false, adjust = 2 * cm.display.wrapper.clientWidth;
    var preparedMeasure = prepareMeasureForLine(cm, lineObj);

    function getX(ch) {
      var sp = cursorCoords(cm, Pos(lineNo, ch), "line", lineObj, preparedMeasure);
      wrongLine = true;
      if (innerOff > sp.bottom) return sp.left - adjust;
      else if (innerOff < sp.top) return sp.left + adjust;
      else wrongLine = false;
      return sp.left;
    }

    var bidi = getOrder(lineObj), dist = lineObj.text.length;
    var from = lineLeft(lineObj), to = lineRight(lineObj);
    var fromX = getX(from), fromOutside = wrongLine, toX = getX(to), toOutside = wrongLine;

    if (x > toX) return PosWithInfo(lineNo, to, toOutside, 1);
    // Do a binary search between these bounds.
    for (;;) {
      if (bidi ? to == from || to == moveVisually(lineObj, from, 1) : to - from <= 1) {
        var ch = x < fromX || x - fromX <= toX - x ? from : to;
        var xDiff = x - (ch == from ? fromX : toX);
        while (isExtendingChar(lineObj.text.charAt(ch))) ++ch;
        var pos = PosWithInfo(lineNo, ch, ch == from ? fromOutside : toOutside,
                              xDiff < -1 ? -1 : xDiff > 1 ? 1 : 0);
        return pos;
      }
      var step = Math.ceil(dist / 2), middle = from + step;
      if (bidi) {
        middle = from;
        for (var i = 0; i < step; ++i) middle = moveVisually(lineObj, middle, 1);
      }
      var middleX = getX(middle);
      if (middleX > x) {to = middle; toX = middleX; if (toOutside = wrongLine) toX += 1000; dist = step;}
      else {from = middle; fromX = middleX; fromOutside = wrongLine; dist -= step;}
    }
  }

  var measureText;
  // Compute the default text height.
  function textHeight(display) {
    if (display.cachedTextHeight != null) return display.cachedTextHeight;
    if (measureText == null) {
      measureText = elt("pre");
      // Measure a bunch of lines, for browsers that compute
      // fractional heights.
      for (var i = 0; i < 49; ++i) {
        measureText.appendChild(document.createTextNode("x"));
        measureText.appendChild(elt("br"));
      }
      measureText.appendChild(document.createTextNode("x"));
    }
    removeChildrenAndAdd(display.measure, measureText);
    var height = measureText.offsetHeight / 50;
    if (height > 3) display.cachedTextHeight = height;
    removeChildren(display.measure);
    return height || 1;
  }

  // Compute the default character width.
  function charWidth(display) {
    if (display.cachedCharWidth != null) return display.cachedCharWidth;
    var anchor = elt("span", "xxxxxxxxxx");
    var pre = elt("pre", [anchor]);
    removeChildrenAndAdd(display.measure, pre);
    var rect = anchor.getBoundingClientRect(), width = (rect.right - rect.left) / 10;
    if (width > 2) display.cachedCharWidth = width;
    return width || 10;
  }

  // OPERATIONS

  // Operations are used to wrap a series of changes to the editor
  // state in such a way that each change won't have to update the
  // cursor and display (which would be awkward, slow, and
  // error-prone). Instead, display updates are batched and then all
  // combined and executed at once.

  var operationGroup = null;

  var nextOpId = 0;
  // Start a new operation.
  function startOperation(cm) {
    cm.curOp = {
      cm: cm,
      viewChanged: false,      // Flag that indicates that lines might need to be redrawn
      startHeight: cm.doc.height, // Used to detect need to update scrollbar
      forceUpdate: false,      // Used to force a redraw
      updateInput: null,       // Whether to reset the input textarea
      typing: false,           // Whether this reset should be careful to leave existing text (for compositing)
      changeObjs: null,        // Accumulated changes, for firing change events
      cursorActivityHandlers: null, // Set of handlers to fire cursorActivity on
      cursorActivityCalled: 0, // Tracks which cursorActivity handlers have been called already
      selectionChanged: false, // Whether the selection needs to be redrawn
      updateMaxLine: false,    // Set when the widest line needs to be determined anew
      scrollLeft: null, scrollTop: null, // Intermediate scroll position, not pushed to DOM yet
      scrollToPos: null,       // Used to scroll to a specific position
      focus: false,
      id: ++nextOpId           // Unique ID
    };
    if (operationGroup) {
      operationGroup.ops.push(cm.curOp);
    } else {
      cm.curOp.ownsGroup = operationGroup = {
        ops: [cm.curOp],
        delayedCallbacks: []
      };
    }
  }

  function fireCallbacksForOps(group) {
    // Calls delayed callbacks and cursorActivity handlers until no
    // new ones appear
    var callbacks = group.delayedCallbacks, i = 0;
    do {
      for (; i < callbacks.length; i++)
        callbacks[i]();
      for (var j = 0; j < group.ops.length; j++) {
        var op = group.ops[j];
        if (op.cursorActivityHandlers)
          while (op.cursorActivityCalled < op.cursorActivityHandlers.length)
            op.cursorActivityHandlers[op.cursorActivityCalled++](op.cm);
      }
    } while (i < callbacks.length);
  }

  // Finish an operation, updating the display and signalling delayed events
  function endOperation(cm) {
    var op = cm.curOp, group = op.ownsGroup;
    if (!group) return;

    try { fireCallbacksForOps(group); }
    finally {
      operationGroup = null;
      for (var i = 0; i < group.ops.length; i++)
        group.ops[i].cm.curOp = null;
      endOperations(group);
    }
  }

  // The DOM updates done when an operation finishes are batched so
  // that the minimum number of relayouts are required.
  function endOperations(group) {
    var ops = group.ops;
    for (var i = 0; i < ops.length; i++) // Read DOM
      endOperation_R1(ops[i]);
    for (var i = 0; i < ops.length; i++) // Write DOM (maybe)
      endOperation_W1(ops[i]);
    for (var i = 0; i < ops.length; i++) // Read DOM
      endOperation_R2(ops[i]);
    for (var i = 0; i < ops.length; i++) // Write DOM (maybe)
      endOperation_W2(ops[i]);
    for (var i = 0; i < ops.length; i++) // Read DOM
      endOperation_finish(ops[i]);
  }

  function endOperation_R1(op) {
    var cm = op.cm, display = cm.display;
    maybeClipScrollbars(cm);
    if (op.updateMaxLine) findMaxLine(cm);

    op.mustUpdate = op.viewChanged || op.forceUpdate || op.scrollTop != null ||
      op.scrollToPos && (op.scrollToPos.from.line < display.viewFrom ||
                         op.scrollToPos.to.line >= display.viewTo) ||
      display.maxLineChanged && cm.options.lineWrapping;
    op.update = op.mustUpdate &&
      new DisplayUpdate(cm, op.mustUpdate && {top: op.scrollTop, ensure: op.scrollToPos}, op.forceUpdate);
  }

  function endOperation_W1(op) {
    op.updatedDisplay = op.mustUpdate && updateDisplayIfNeeded(op.cm, op.update);
  }

  function endOperation_R2(op) {
    var cm = op.cm, display = cm.display;
    if (op.updatedDisplay) updateHeightsInViewport(cm);

    op.barMeasure = measureForScrollbars(cm);

    // If the max line changed since it was last measured, measure it,
    // and ensure the document's width matches it.
    // updateDisplay_W2 will use these properties to do the actual resizing
    if (display.maxLineChanged && !cm.options.lineWrapping) {
      op.adjustWidthTo = measureChar(cm, display.maxLine, display.maxLine.text.length).left + 3;
      cm.display.sizerWidth = op.adjustWidthTo;
      op.barMeasure.scrollWidth =
        Math.max(display.scroller.clientWidth, display.sizer.offsetLeft + op.adjustWidthTo + scrollGap(cm) + cm.display.barWidth);
      op.maxScrollLeft = Math.max(0, display.sizer.offsetLeft + op.adjustWidthTo - displayWidth(cm));
    }

    if (op.updatedDisplay || op.selectionChanged)
      op.preparedSelection = display.input.prepareSelection();
  }

  function endOperation_W2(op) {
    var cm = op.cm;

    if (op.adjustWidthTo != null) {
      cm.display.sizer.style.minWidth = op.adjustWidthTo + "px";
      if (op.maxScrollLeft < cm.doc.scrollLeft)
        setScrollLeft(cm, Math.min(cm.display.scroller.scrollLeft, op.maxScrollLeft), true);
      cm.display.maxLineChanged = false;
    }

    if (op.preparedSelection)
      cm.display.input.showSelection(op.preparedSelection);
    if (op.updatedDisplay)
      setDocumentHeight(cm, op.barMeasure);
    if (op.updatedDisplay || op.startHeight != cm.doc.height)
      updateScrollbars(cm, op.barMeasure);

    if (op.selectionChanged) restartBlink(cm);

    if (cm.state.focused && op.updateInput)
      cm.display.input.reset(op.typing);
    if (op.focus && op.focus == activeElt()) ensureFocus(op.cm);
  }

  function endOperation_finish(op) {
    var cm = op.cm, display = cm.display, doc = cm.doc;

    if (op.updatedDisplay) postUpdateDisplay(cm, op.update);

    // Abort mouse wheel delta measurement, when scrolling explicitly
    if (display.wheelStartX != null && (op.scrollTop != null || op.scrollLeft != null || op.scrollToPos))
      display.wheelStartX = display.wheelStartY = null;

    // Propagate the scroll position to the actual DOM scroller
    if (op.scrollTop != null && (display.scroller.scrollTop != op.scrollTop || op.forceScroll)) {
      doc.scrollTop = Math.max(0, Math.min(display.scroller.scrollHeight - display.scroller.clientHeight, op.scrollTop));
      display.scrollbars.setScrollTop(doc.scrollTop);
      display.scroller.scrollTop = doc.scrollTop;
    }
    if (op.scrollLeft != null && (display.scroller.scrollLeft != op.scrollLeft || op.forceScroll)) {
      doc.scrollLeft = Math.max(0, Math.min(display.scroller.scrollWidth - displayWidth(cm), op.scrollLeft));
      display.scrollbars.setScrollLeft(doc.scrollLeft);
      display.scroller.scrollLeft = doc.scrollLeft;
      alignHorizontally(cm);
    }
    // If we need to scroll a specific position into view, do so.
    if (op.scrollToPos) {
      var coords = scrollPosIntoView(cm, clipPos(doc, op.scrollToPos.from),
                                     clipPos(doc, op.scrollToPos.to), op.scrollToPos.margin);
      if (op.scrollToPos.isCursor && cm.state.focused) maybeScrollWindow(cm, coords);
    }

    // Fire events for markers that are hidden/unidden by editing or
    // undoing
    var hidden = op.maybeHiddenMarkers, unhidden = op.maybeUnhiddenMarkers;
    if (hidden) for (var i = 0; i < hidden.length; ++i)
      if (!hidden[i].lines.length) signal(hidden[i], "hide");
    if (unhidden) for (var i = 0; i < unhidden.length; ++i)
      if (unhidden[i].lines.length) signal(unhidden[i], "unhide");

    if (display.wrapper.offsetHeight)
      doc.scrollTop = cm.display.scroller.scrollTop;

    // Fire change events, and delayed event handlers
    if (op.changeObjs)
      signal(cm, "changes", cm, op.changeObjs);
    if (op.update)
      op.update.finish();
  }

  // Run the given function in an operation
  function runInOp(cm, f) {
    if (cm.curOp) return f();
    startOperation(cm);
    try { return f(); }
    finally { endOperation(cm); }
  }
  // Wraps a function in an operation. Returns the wrapped function.
  function operation(cm, f) {
    return function() {
      if (cm.curOp) return f.apply(cm, arguments);
      startOperation(cm);
      try { return f.apply(cm, arguments); }
      finally { endOperation(cm); }
    };
  }
  // Used to add methods to editor and doc instances, wrapping them in
  // operations.
  function methodOp(f) {
    return function() {
      if (this.curOp) return f.apply(this, arguments);
      startOperation(this);
      try { return f.apply(this, arguments); }
      finally { endOperation(this); }
    };
  }
  function docMethodOp(f) {
    return function() {
      var cm = this.cm;
      if (!cm || cm.curOp) return f.apply(this, arguments);
      startOperation(cm);
      try { return f.apply(this, arguments); }
      finally { endOperation(cm); }
    };
  }

  // VIEW TRACKING

  // These objects are used to represent the visible (currently drawn)
  // part of the document. A LineView may correspond to multiple
  // logical lines, if those are connected by collapsed ranges.
  function LineView(doc, line, lineN) {
    // The starting line
    this.line = line;
    // Continuing lines, if any
    this.rest = visualLineContinued(line);
    // Number of logical lines in this visual line
    this.size = this.rest ? lineNo(lst(this.rest)) - lineN + 1 : 1;
    this.node = this.text = null;
    this.hidden = lineIsHidden(doc, line);
  }

  // Create a range of LineView objects for the given lines.
  function buildViewArray(cm, from, to) {
    var array = [], nextPos;
    for (var pos = from; pos < to; pos = nextPos) {
      var view = new LineView(cm.doc, getLine(cm.doc, pos), pos);
      nextPos = pos + view.size;
      array.push(view);
    }
    return array;
  }

  // Updates the display.view data structure for a given change to the
  // document. From and to are in pre-change coordinates. Lendiff is
  // the amount of lines added or subtracted by the change. This is
  // used for changes that span multiple lines, or change the way
  // lines are divided into visual lines. regLineChange (below)
  // registers single-line changes.
  function regChange(cm, from, to, lendiff) {
    if (from == null) from = cm.doc.first;
    if (to == null) to = cm.doc.first + cm.doc.size;
    if (!lendiff) lendiff = 0;

    var display = cm.display;
    if (lendiff && to < display.viewTo &&
        (display.updateLineNumbers == null || display.updateLineNumbers > from))
      display.updateLineNumbers = from;

    cm.curOp.viewChanged = true;

    if (from >= display.viewTo) { // Change after
      if (sawCollapsedSpans && visualLineNo(cm.doc, from) < display.viewTo)
        resetView(cm);
    } else if (to <= display.viewFrom) { // Change before
      if (sawCollapsedSpans && visualLineEndNo(cm.doc, to + lendiff) > display.viewFrom) {
        resetView(cm);
      } else {
        display.viewFrom += lendiff;
        display.viewTo += lendiff;
      }
    } else if (from <= display.viewFrom && to >= display.viewTo) { // Full overlap
      resetView(cm);
    } else if (from <= display.viewFrom) { // Top overlap
      var cut = viewCuttingPoint(cm, to, to + lendiff, 1);
      if (cut) {
        display.view = display.view.slice(cut.index);
        display.viewFrom = cut.lineN;
        display.viewTo += lendiff;
      } else {
        resetView(cm);
      }
    } else if (to >= display.viewTo) { // Bottom overlap
      var cut = viewCuttingPoint(cm, from, from, -1);
      if (cut) {
        display.view = display.view.slice(0, cut.index);
        display.viewTo = cut.lineN;
      } else {
        resetView(cm);
      }
    } else { // Gap in the middle
      var cutTop = viewCuttingPoint(cm, from, from, -1);
      var cutBot = viewCuttingPoint(cm, to, to + lendiff, 1);
      if (cutTop && cutBot) {
        display.view = display.view.slice(0, cutTop.index)
          .concat(buildViewArray(cm, cutTop.lineN, cutBot.lineN))
          .concat(display.view.slice(cutBot.index));
        display.viewTo += lendiff;
      } else {
        resetView(cm);
      }
    }

    var ext = display.externalMeasured;
    if (ext) {
      if (to < ext.lineN)
        ext.lineN += lendiff;
      else if (from < ext.lineN + ext.size)
        display.externalMeasured = null;
    }
  }

  // Register a change to a single line. Type must be one of "text",
  // "gutter", "class", "widget"
  function regLineChange(cm, line, type) {
    cm.curOp.viewChanged = true;
    var display = cm.display, ext = cm.display.externalMeasured;
    if (ext && line >= ext.lineN && line < ext.lineN + ext.size)
      display.externalMeasured = null;

    if (line < display.viewFrom || line >= display.viewTo) return;
    var lineView = display.view[findViewIndex(cm, line)];
    if (lineView.node == null) return;
    var arr = lineView.changes || (lineView.changes = []);
    if (indexOf(arr, type) == -1) arr.push(type);
  }

  // Clear the view.
  function resetView(cm) {
    cm.display.viewFrom = cm.display.viewTo = cm.doc.first;
    cm.display.view = [];
    cm.display.viewOffset = 0;
  }

  // Find the view element corresponding to a given line. Return null
  // when the line isn't visible.
  function findViewIndex(cm, n) {
    if (n >= cm.display.viewTo) return null;
    n -= cm.display.viewFrom;
    if (n < 0) return null;
    var view = cm.display.view;
    for (var i = 0; i < view.length; i++) {
      n -= view[i].size;
      if (n < 0) return i;
    }
  }

  function viewCuttingPoint(cm, oldN, newN, dir) {
    var index = findViewIndex(cm, oldN), diff, view = cm.display.view;
    if (!sawCollapsedSpans || newN == cm.doc.first + cm.doc.size)
      return {index: index, lineN: newN};
    for (var i = 0, n = cm.display.viewFrom; i < index; i++)
      n += view[i].size;
    if (n != oldN) {
      if (dir > 0) {
        if (index == view.length - 1) return null;
        diff = (n + view[index].size) - oldN;
        index++;
      } else {
        diff = n - oldN;
      }
      oldN += diff; newN += diff;
    }
    while (visualLineNo(cm.doc, newN) != newN) {
      if (index == (dir < 0 ? 0 : view.length - 1)) return null;
      newN += dir * view[index - (dir < 0 ? 1 : 0)].size;
      index += dir;
    }
    return {index: index, lineN: newN};
  }

  // Force the view to cover a given range, adding empty view element
  // or clipping off existing ones as needed.
  function adjustView(cm, from, to) {
    var display = cm.display, view = display.view;
    if (view.length == 0 || from >= display.viewTo || to <= display.viewFrom) {
      display.view = buildViewArray(cm, from, to);
      display.viewFrom = from;
    } else {
      if (display.viewFrom > from)
        display.view = buildViewArray(cm, from, display.viewFrom).concat(display.view);
      else if (display.viewFrom < from)
        display.view = display.view.slice(findViewIndex(cm, from));
      display.viewFrom = from;
      if (display.viewTo < to)
        display.view = display.view.concat(buildViewArray(cm, display.viewTo, to));
      else if (display.viewTo > to)
        display.view = display.view.slice(0, findViewIndex(cm, to));
    }
    display.viewTo = to;
  }

  // Count the number of lines in the view whose DOM representation is
  // out of date (or nonexistent).
  function countDirtyView(cm) {
    var view = cm.display.view, dirty = 0;
    for (var i = 0; i < view.length; i++) {
      var lineView = view[i];
      if (!lineView.hidden && (!lineView.node || lineView.changes)) ++dirty;
    }
    return dirty;
  }

  // EVENT HANDLERS

  // Attach the necessary event handlers when initializing the editor
  function registerEventHandlers(cm) {
    var d = cm.display;
    on(d.scroller, "mousedown", operation(cm, onMouseDown));
    // Older IE's will not fire a second mousedown for a double click
    if (ie && ie_version < 11)
      on(d.scroller, "dblclick", operation(cm, function(e) {
        if (signalDOMEvent(cm, e)) return;
        var pos = posFromMouse(cm, e);
        if (!pos || clickInGutter(cm, e) || eventInWidget(cm.display, e)) return;
        e_preventDefault(e);
        var word = cm.findWordAt(pos);
        extendSelection(cm.doc, word.anchor, word.head);
      }));
    else
      on(d.scroller, "dblclick", function(e) { signalDOMEvent(cm, e) || e_preventDefault(e); });
    // Some browsers fire contextmenu *after* opening the menu, at
    // which point we can't mess with it anymore. Context menu is
    // handled in onMouseDown for these browsers.
    if (!captureRightClick) on(d.scroller, "contextmenu", function(e) {onContextMenu(cm, e);});

    // Used to suppress mouse event handling when a touch happens
    var touchFinished, prevTouch = {end: 0};
    function finishTouch() {
      if (d.activeTouch) {
        touchFinished = setTimeout(function() {d.activeTouch = null;}, 1000);
        prevTouch = d.activeTouch;
        prevTouch.end = +new Date;
      }
    };
    function isMouseLikeTouchEvent(e) {
      if (e.touches.length != 1) return false;
      var touch = e.touches[0];
      return touch.radiusX <= 1 && touch.radiusY <= 1;
    }
    function farAway(touch, other) {
      if (other.left == null) return true;
      var dx = other.left - touch.left, dy = other.top - touch.top;
      return dx * dx + dy * dy > 20 * 20;
    }
    on(d.scroller, "touchstart", function(e) {
      if (!isMouseLikeTouchEvent(e)) {
        clearTimeout(touchFinished);
        var now = +new Date;
        d.activeTouch = {start: now, moved: false,
                         prev: now - prevTouch.end <= 300 ? prevTouch : null};
        if (e.touches.length == 1) {
          d.activeTouch.left = e.touches[0].pageX;
          d.activeTouch.top = e.touches[0].pageY;
        }
      }
    });
    on(d.scroller, "touchmove", function() {
      if (d.activeTouch) d.activeTouch.moved = true;
    });
    on(d.scroller, "touchend", function(e) {
      var touch = d.activeTouch;
      if (touch && !eventInWidget(d, e) && touch.left != null &&
          !touch.moved && new Date - touch.start < 300) {
        var pos = cm.coordsChar(d.activeTouch, "page"), range;
        if (!touch.prev || farAway(touch, touch.prev)) // Single tap
          range = new Range(pos, pos);
        else if (!touch.prev.prev || farAway(touch, touch.prev.prev)) // Double tap
          range = cm.findWordAt(pos);
        else // Triple tap
          range = new Range(Pos(pos.line, 0), clipPos(cm.doc, Pos(pos.line + 1, 0)));
        cm.setSelection(range.anchor, range.head);
        cm.focus();
        e_preventDefault(e);
      }
      finishTouch();
    });
    on(d.scroller, "touchcancel", finishTouch);

    // Sync scrolling between fake scrollbars and real scrollable
    // area, ensure viewport is updated when scrolling.
    on(d.scroller, "scroll", function() {
      if (d.scroller.clientHeight) {
        setScrollTop(cm, d.scroller.scrollTop);
        setScrollLeft(cm, d.scroller.scrollLeft, true);
        signal(cm, "scroll", cm);
      }
    });

    // Listen to wheel events in order to try and update the viewport on time.
    on(d.scroller, "mousewheel", function(e){onScrollWheel(cm, e);});
    on(d.scroller, "DOMMouseScroll", function(e){onScrollWheel(cm, e);});

    // Prevent wrapper from ever scrolling
    on(d.wrapper, "scroll", function() { d.wrapper.scrollTop = d.wrapper.scrollLeft = 0; });

    d.dragFunctions = {
      simple: function(e) {if (!signalDOMEvent(cm, e)) e_stop(e);},
      start: function(e){onDragStart(cm, e);},
      drop: operation(cm, onDrop)
    };

    var inp = d.input.getField();
    on(inp, "keyup", function(e) { onKeyUp.call(cm, e); });
    on(inp, "keydown", operation(cm, onKeyDown));
    on(inp, "keypress", operation(cm, onKeyPress));
    on(inp, "focus", bind(onFocus, cm));
    on(inp, "blur", bind(onBlur, cm));
  }

  function dragDropChanged(cm, value, old) {
    var wasOn = old && old != CodeMirror.Init;
    if (!value != !wasOn) {
      var funcs = cm.display.dragFunctions;
      var toggle = value ? on : off;
      toggle(cm.display.scroller, "dragstart", funcs.start);
      toggle(cm.display.scroller, "dragenter", funcs.simple);
      toggle(cm.display.scroller, "dragover", funcs.simple);
      toggle(cm.display.scroller, "drop", funcs.drop);
    }
  }

  // Called when the window resizes
  function onResize(cm) {
    var d = cm.display;
    if (d.lastWrapHeight == d.wrapper.clientHeight && d.lastWrapWidth == d.wrapper.clientWidth)
      return;
    // Might be a text scaling operation, clear size caches.
    d.cachedCharWidth = d.cachedTextHeight = d.cachedPaddingH = null;
    d.scrollbarsClipped = false;
    cm.setSize();
  }

  // MOUSE EVENTS

  // Return true when the given mouse event happened in a widget
  function eventInWidget(display, e) {
    for (var n = e_target(e); n != display.wrapper; n = n.parentNode) {
      if (!n || (n.nodeType == 1 && n.getAttribute("cm-ignore-events") == "true") ||
          (n.parentNode == display.sizer && n != display.mover))
        return true;
    }
  }

  // Given a mouse event, find the corresponding position. If liberal
  // is false, it checks whether a gutter or scrollbar was clicked,
  // and returns null if it was. forRect is used by rectangular
  // selections, and tries to estimate a character position even for
  // coordinates beyond the right of the text.
  function posFromMouse(cm, e, liberal, forRect) {
    var display = cm.display;
    if (!liberal && e_target(e).getAttribute("cm-not-content") == "true") return null;

    var x, y, space = display.lineSpace.getBoundingClientRect();
    // Fails unpredictably on IE[67] when mouse is dragged around quickly.
    try { x = e.clientX - space.left; y = e.clientY - space.top; }
    catch (e) { return null; }
    var coords = coordsChar(cm, x, y), line;
    if (forRect && coords.xRel == 1 && (line = getLine(cm.doc, coords.line).text).length == coords.ch) {
      var colDiff = countColumn(line, line.length, cm.options.tabSize) - line.length;
      coords = Pos(coords.line, Math.max(0, Math.round((x - paddingH(cm.display).left) / charWidth(cm.display)) - colDiff));
    }
    return coords;
  }

  // A mouse down can be a single click, double click, triple click,
  // start of selection drag, start of text drag, new cursor
  // (ctrl-click), rectangle drag (alt-drag), or xwin
  // middle-click-paste. Or it might be a click on something we should
  // not interfere with, such as a scrollbar or widget.
  function onMouseDown(e) {
    var cm = this, display = cm.display;
    if (display.activeTouch && display.input.supportsTouch() || signalDOMEvent(cm, e)) return;
    display.shift = e.shiftKey;

    if (eventInWidget(display, e)) {
      if (!webkit) {
        // Briefly turn off draggability, to allow widgets to do
        // normal dragging things.
        display.scroller.draggable = false;
        setTimeout(function(){display.scroller.draggable = true;}, 100);
      }
      return;
    }
    if (clickInGutter(cm, e)) return;
    var start = posFromMouse(cm, e);
    window.focus();

    switch (e_button(e)) {
    case 1:
      if (start)
        leftButtonDown(cm, e, start);
      else if (e_target(e) == display.scroller)
        e_preventDefault(e);
      break;
    case 2:
      if (webkit) cm.state.lastMiddleDown = +new Date;
      if (start) extendSelection(cm.doc, start);
      setTimeout(function() {display.input.focus();}, 20);
      e_preventDefault(e);
      break;
    case 3:
      if (captureRightClick) onContextMenu(cm, e);
      else delayBlurEvent(cm);
      break;
    }
  }

  var lastClick, lastDoubleClick;
  function leftButtonDown(cm, e, start) {
    if (ie) setTimeout(bind(ensureFocus, cm), 0);
    else cm.curOp.focus = activeElt();

    var now = +new Date, type;
    if (lastDoubleClick && lastDoubleClick.time > now - 400 && cmp(lastDoubleClick.pos, start) == 0) {
      type = "triple";
    } else if (lastClick && lastClick.time > now - 400 && cmp(lastClick.pos, start) == 0) {
      type = "double";
      lastDoubleClick = {time: now, pos: start};
    } else {
      type = "single";
      lastClick = {time: now, pos: start};
    }

    var sel = cm.doc.sel, modifier = mac ? e.metaKey : e.ctrlKey, contained;
    if (cm.options.dragDrop && dragAndDrop && !isReadOnly(cm) &&
        type == "single" && (contained = sel.contains(start)) > -1 &&
        (cmp((contained = sel.ranges[contained]).from(), start) < 0 || start.xRel > 0) &&
        (cmp(contained.to(), start) > 0 || start.xRel < 0))
      leftButtonStartDrag(cm, e, start, modifier);
    else
      leftButtonSelect(cm, e, start, type, modifier);
  }

  // Start a text drag. When it ends, see if any dragging actually
  // happen, and treat as a click if it didn't.
  function leftButtonStartDrag(cm, e, start, modifier) {
    var display = cm.display, startTime = +new Date;
    var dragEnd = operation(cm, function(e2) {
      if (webkit) display.scroller.draggable = false;
      cm.state.draggingText = false;
      off(document, "mouseup", dragEnd);
      off(display.scroller, "drop", dragEnd);
      if (Math.abs(e.clientX - e2.clientX) + Math.abs(e.clientY - e2.clientY) < 10) {
        e_preventDefault(e2);
        if (!modifier && +new Date - 200 < startTime)
          extendSelection(cm.doc, start);
        // Work around unexplainable focus problem in IE9 (#2127) and Chrome (#3081)
        if (webkit || ie && ie_version == 9)
          setTimeout(function() {document.body.focus(); display.input.focus();}, 20);
        else
          display.input.focus();
      }
    });
    // Let the drag handler handle this.
    if (webkit) display.scroller.draggable = true;
    cm.state.draggingText = dragEnd;
    // IE's approach to draggable
    if (display.scroller.dragDrop) display.scroller.dragDrop();
    on(document, "mouseup", dragEnd);
    on(display.scroller, "drop", dragEnd);
  }

  // Normal selection, as opposed to text dragging.
  function leftButtonSelect(cm, e, start, type, addNew) {
    var display = cm.display, doc = cm.doc;
    e_preventDefault(e);

    var ourRange, ourIndex, startSel = doc.sel, ranges = startSel.ranges;
    if (addNew && !e.shiftKey) {
      ourIndex = doc.sel.contains(start);
      if (ourIndex > -1)
        ourRange = ranges[ourIndex];
      else
        ourRange = new Range(start, start);
    } else {
      ourRange = doc.sel.primary();
      ourIndex = doc.sel.primIndex;
    }

    if (e.altKey) {
      type = "rect";
      if (!addNew) ourRange = new Range(start, start);
      start = posFromMouse(cm, e, true, true);
      ourIndex = -1;
    } else if (type == "double") {
      var word = cm.findWordAt(start);
      if (cm.display.shift || doc.extend)
        ourRange = extendRange(doc, ourRange, word.anchor, word.head);
      else
        ourRange = word;
    } else if (type == "triple") {
      var line = new Range(Pos(start.line, 0), clipPos(doc, Pos(start.line + 1, 0)));
      if (cm.display.shift || doc.extend)
        ourRange = extendRange(doc, ourRange, line.anchor, line.head);
      else
        ourRange = line;
    } else {
      ourRange = extendRange(doc, ourRange, start);
    }

    if (!addNew) {
      ourIndex = 0;
      setSelection(doc, new Selection([ourRange], 0), sel_mouse);
      startSel = doc.sel;
    } else if (ourIndex == -1) {
      ourIndex = ranges.length;
      setSelection(doc, normalizeSelection(ranges.concat([ourRange]), ourIndex),
                   {scroll: false, origin: "*mouse"});
    } else if (ranges.length > 1 && ranges[ourIndex].empty() && type == "single" && !e.shiftKey) {
      setSelection(doc, normalizeSelection(ranges.slice(0, ourIndex).concat(ranges.slice(ourIndex + 1)), 0));
      startSel = doc.sel;
    } else {
      replaceOneSelection(doc, ourIndex, ourRange, sel_mouse);
    }

    var lastPos = start;
    function extendTo(pos) {
      if (cmp(lastPos, pos) == 0) return;
      lastPos = pos;

      if (type == "rect") {
        var ranges = [], tabSize = cm.options.tabSize;
        var startCol = countColumn(getLine(doc, start.line).text, start.ch, tabSize);
        var posCol = countColumn(getLine(doc, pos.line).text, pos.ch, tabSize);
        var left = Math.min(startCol, posCol), right = Math.max(startCol, posCol);
        for (var line = Math.min(start.line, pos.line), end = Math.min(cm.lastLine(), Math.max(start.line, pos.line));
             line <= end; line++) {
          var text = getLine(doc, line).text, leftPos = findColumn(text, left, tabSize);
          if (left == right)
            ranges.push(new Range(Pos(line, leftPos), Pos(line, leftPos)));
          else if (text.length > leftPos)
            ranges.push(new Range(Pos(line, leftPos), Pos(line, findColumn(text, right, tabSize))));
        }
        if (!ranges.length) ranges.push(new Range(start, start));
        setSelection(doc, normalizeSelection(startSel.ranges.slice(0, ourIndex).concat(ranges), ourIndex),
                     {origin: "*mouse", scroll: false});
        cm.scrollIntoView(pos);
      } else {
        var oldRange = ourRange;
        var anchor = oldRange.anchor, head = pos;
        if (type != "single") {
          if (type == "double")
            var range = cm.findWordAt(pos);
          else
            var range = new Range(Pos(pos.line, 0), clipPos(doc, Pos(pos.line + 1, 0)));
          if (cmp(range.anchor, anchor) > 0) {
            head = range.head;
            anchor = minPos(oldRange.from(), range.anchor);
          } else {
            head = range.anchor;
            anchor = maxPos(oldRange.to(), range.head);
          }
        }
        var ranges = startSel.ranges.slice(0);
        ranges[ourIndex] = new Range(clipPos(doc, anchor), head);
        setSelection(doc, normalizeSelection(ranges, ourIndex), sel_mouse);
      }
    }

    var editorSize = display.wrapper.getBoundingClientRect();
    // Used to ensure timeout re-tries don't fire when another extend
    // happened in the meantime (clearTimeout isn't reliable -- at
    // least on Chrome, the timeouts still happen even when cleared,
    // if the clear happens after their scheduled firing time).
    var counter = 0;

    function extend(e) {
      var curCount = ++counter;
      var cur = posFromMouse(cm, e, true, type == "rect");
      if (!cur) return;
      if (cmp(cur, lastPos) != 0) {
        cm.curOp.focus = activeElt();
        extendTo(cur);
        var visible = visibleLines(display, doc);
        if (cur.line >= visible.to || cur.line < visible.from)
          setTimeout(operation(cm, function(){if (counter == curCount) extend(e);}), 150);
      } else {
        var outside = e.clientY < editorSize.top ? -20 : e.clientY > editorSize.bottom ? 20 : 0;
        if (outside) setTimeout(operation(cm, function() {
          if (counter != curCount) return;
          display.scroller.scrollTop += outside;
          extend(e);
        }), 50);
      }
    }

    function done(e) {
      counter = Infinity;
      e_preventDefault(e);
      display.input.focus();
      off(document, "mousemove", move);
      off(document, "mouseup", up);
      doc.history.lastSelOrigin = null;
    }

    var move = operation(cm, function(e) {
      if (!e_button(e)) done(e);
      else extend(e);
    });
    var up = operation(cm, done);
    on(document, "mousemove", move);
    on(document, "mouseup", up);
  }

  // Determines whether an event happened in the gutter, and fires the
  // handlers for the corresponding event.
  function gutterEvent(cm, e, type, prevent, signalfn) {
    try { var mX = e.clientX, mY = e.clientY; }
    catch(e) { return false; }
    if (mX >= Math.floor(cm.display.gutters.getBoundingClientRect().right)) return false;
    if (prevent) e_preventDefault(e);

    var display = cm.display;
    var lineBox = display.lineDiv.getBoundingClientRect();

    if (mY > lineBox.bottom || !hasHandler(cm, type)) return e_defaultPrevented(e);
    mY -= lineBox.top - display.viewOffset;

    for (var i = 0; i < cm.options.gutters.length; ++i) {
      var g = display.gutters.childNodes[i];
      if (g && g.getBoundingClientRect().right >= mX) {
        var line = lineAtHeight(cm.doc, mY);
        var gutter = cm.options.gutters[i];
        signalfn(cm, type, cm, line, gutter, e);
        return e_defaultPrevented(e);
      }
    }
  }

  function clickInGutter(cm, e) {
    return gutterEvent(cm, e, "gutterClick", true, signalLater);
  }

  // Kludge to work around strange IE behavior where it'll sometimes
  // re-fire a series of drag-related events right after the drop (#1551)
  var lastDrop = 0;

  function onDrop(e) {
    var cm = this;
    if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e))
      return;
    e_preventDefault(e);
    if (ie) lastDrop = +new Date;
    var pos = posFromMouse(cm, e, true), files = e.dataTransfer.files;
    if (!pos || isReadOnly(cm)) return;
    // Might be a file drop, in which case we simply extract the text
    // and insert it.
    if (files && files.length && window.FileReader && window.File) {
      var n = files.length, text = Array(n), read = 0;
      var loadFile = function(file, i) {
        var reader = new FileReader;
        reader.onload = operation(cm, function() {
          text[i] = reader.result;
          if (++read == n) {
            pos = clipPos(cm.doc, pos);
            var change = {from: pos, to: pos, text: splitLines(text.join("\n")), origin: "paste"};
            makeChange(cm.doc, change);
            setSelectionReplaceHistory(cm.doc, simpleSelection(pos, changeEnd(change)));
          }
        });
        reader.readAsText(file);
      };
      for (var i = 0; i < n; ++i) loadFile(files[i], i);
    } else { // Normal drop
      // Don't do a replace if the drop happened inside of the selected text.
      if (cm.state.draggingText && cm.doc.sel.contains(pos) > -1) {
        cm.state.draggingText(e);
        // Ensure the editor is re-focused
        setTimeout(function() {cm.display.input.focus();}, 20);
        return;
      }
      try {
        var text = e.dataTransfer.getData("Text");
        if (text) {
          if (cm.state.draggingText && !(mac ? e.altKey : e.ctrlKey))
            var selected = cm.listSelections();
          setSelectionNoUndo(cm.doc, simpleSelection(pos, pos));
          if (selected) for (var i = 0; i < selected.length; ++i)
            replaceRange(cm.doc, "", selected[i].anchor, selected[i].head, "drag");
          cm.replaceSelection(text, "around", "paste");
          cm.display.input.focus();
        }
      }
      catch(e){}
    }
  }

  function onDragStart(cm, e) {
    if (ie && (!cm.state.draggingText || +new Date - lastDrop < 100)) { e_stop(e); return; }
    if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e)) return;

    e.dataTransfer.setData("Text", cm.getSelection());

    // Use dummy image instead of default browsers image.
    // Recent Safari (~6.0.2) have a tendency to segfault when this happens, so we don't do it there.
    if (e.dataTransfer.setDragImage && !safari) {
      var img = elt("img", null, null, "position: fixed; left: 0; top: 0;");
      img.src = "data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==";
      if (presto) {
        img.width = img.height = 1;
        cm.display.wrapper.appendChild(img);
        // Force a relayout, or Opera won't use our image for some obscure reason
        img._top = img.offsetTop;
      }
      e.dataTransfer.setDragImage(img, 0, 0);
      if (presto) img.parentNode.removeChild(img);
    }
  }

  // SCROLL EVENTS

  // Sync the scrollable area and scrollbars, ensure the viewport
  // covers the visible area.
  function setScrollTop(cm, val) {
    if (Math.abs(cm.doc.scrollTop - val) < 2) return;
    cm.doc.scrollTop = val;
    if (!gecko) updateDisplaySimple(cm, {top: val});
    if (cm.display.scroller.scrollTop != val) cm.display.scroller.scrollTop = val;
    cm.display.scrollbars.setScrollTop(val);
    if (gecko) updateDisplaySimple(cm);
    startWorker(cm, 100);
  }
  // Sync scroller and scrollbar, ensure the gutter elements are
  // aligned.
  function setScrollLeft(cm, val, isScroller) {
    if (isScroller ? val == cm.doc.scrollLeft : Math.abs(cm.doc.scrollLeft - val) < 2) return;
    val = Math.min(val, cm.display.scroller.scrollWidth - cm.display.scroller.clientWidth);
    cm.doc.scrollLeft = val;
    alignHorizontally(cm);
    if (cm.display.scroller.scrollLeft != val) cm.display.scroller.scrollLeft = val;
    cm.display.scrollbars.setScrollLeft(val);
  }

  // Since the delta values reported on mouse wheel events are
  // unstandardized between browsers and even browser versions, and
  // generally horribly unpredictable, this code starts by measuring
  // the scroll effect that the first few mouse wheel events have,
  // and, from that, detects the way it can convert deltas to pixel
  // offsets afterwards.
  //
  // The reason we want to know the amount a wheel event will scroll
  // is that it gives us a chance to update the display before the
  // actual scrolling happens, reducing flickering.

  var wheelSamples = 0, wheelPixelsPerUnit = null;
  // Fill in a browser-detected starting value on browsers where we
  // know one. These don't have to be accurate -- the result of them
  // being wrong would just be a slight flicker on the first wheel
  // scroll (if it is large enough).
  if (ie) wheelPixelsPerUnit = -.53;
  else if (gecko) wheelPixelsPerUnit = 15;
  else if (chrome) wheelPixelsPerUnit = -.7;
  else if (safari) wheelPixelsPerUnit = -1/3;

  var wheelEventDelta = function(e) {
    var dx = e.wheelDeltaX, dy = e.wheelDeltaY;
    if (dx == null && e.detail && e.axis == e.HORIZONTAL_AXIS) dx = e.detail;
    if (dy == null && e.detail && e.axis == e.VERTICAL_AXIS) dy = e.detail;
    else if (dy == null) dy = e.wheelDelta;
    return {x: dx, y: dy};
  };
  CodeMirror.wheelEventPixels = function(e) {
    var delta = wheelEventDelta(e);
    delta.x *= wheelPixelsPerUnit;
    delta.y *= wheelPixelsPerUnit;
    return delta;
  };

  function onScrollWheel(cm, e) {
    var delta = wheelEventDelta(e), dx = delta.x, dy = delta.y;

    var display = cm.display, scroll = display.scroller;
    // Quit if there's nothing to scroll here
    if (!(dx && scroll.scrollWidth > scroll.clientWidth ||
          dy && scroll.scrollHeight > scroll.clientHeight)) return;

    // Webkit browsers on OS X abort momentum scrolls when the target
    // of the scroll event is removed from the scrollable element.
    // This hack (see related code in patchDisplay) makes sure the
    // element is kept around.
    if (dy && mac && webkit) {
      outer: for (var cur = e.target, view = display.view; cur != scroll; cur = cur.parentNode) {
        for (var i = 0; i < view.length; i++) {
          if (view[i].node == cur) {
            cm.display.currentWheelTarget = cur;
            break outer;
          }
        }
      }
    }

    // On some browsers, horizontal scrolling will cause redraws to
    // happen before the gutter has been realigned, causing it to
    // wriggle around in a most unseemly way. When we have an
    // estimated pixels/delta value, we just handle horizontal
    // scrolling entirely here. It'll be slightly off from native, but
    // better than glitching out.
    if (dx && !gecko && !presto && wheelPixelsPerUnit != null) {
      if (dy)
        setScrollTop(cm, Math.max(0, Math.min(scroll.scrollTop + dy * wheelPixelsPerUnit, scroll.scrollHeight - scroll.clientHeight)));
      setScrollLeft(cm, Math.max(0, Math.min(scroll.scrollLeft + dx * wheelPixelsPerUnit, scroll.scrollWidth - scroll.clientWidth)));
      e_preventDefault(e);
      display.wheelStartX = null; // Abort measurement, if in progress
      return;
    }

    // 'Project' the visible viewport to cover the area that is being
    // scrolled into view (if we know enough to estimate it).
    if (dy && wheelPixelsPerUnit != null) {
      var pixels = dy * wheelPixelsPerUnit;
      var top = cm.doc.scrollTop, bot = top + display.wrapper.clientHeight;
      if (pixels < 0) top = Math.max(0, top + pixels - 50);
      else bot = Math.min(cm.doc.height, bot + pixels + 50);
      updateDisplaySimple(cm, {top: top, bottom: bot});
    }

    if (wheelSamples < 20) {
      if (display.wheelStartX == null) {
        display.wheelStartX = scroll.scrollLeft; display.wheelStartY = scroll.scrollTop;
        display.wheelDX = dx; display.wheelDY = dy;
        setTimeout(function() {
          if (display.wheelStartX == null) return;
          var movedX = scroll.scrollLeft - display.wheelStartX;
          var movedY = scroll.scrollTop - display.wheelStartY;
          var sample = (movedY && display.wheelDY && movedY / display.wheelDY) ||
            (movedX && display.wheelDX && movedX / display.wheelDX);
          display.wheelStartX = display.wheelStartY = null;
          if (!sample) return;
          wheelPixelsPerUnit = (wheelPixelsPerUnit * wheelSamples + sample) / (wheelSamples + 1);
          ++wheelSamples;
        }, 200);
      } else {
        display.wheelDX += dx; display.wheelDY += dy;
      }
    }
  }

  // KEY EVENTS

  // Run a handler that was bound to a key.
  function doHandleBinding(cm, bound, dropShift) {
    if (typeof bound == "string") {
      bound = commands[bound];
      if (!bound) return false;
    }
    // Ensure previous input has been read, so that the handler sees a
    // consistent view of the document
    cm.display.input.ensurePolled();
    var prevShift = cm.display.shift, done = false;
    try {
      if (isReadOnly(cm)) cm.state.suppressEdits = true;
      if (dropShift) cm.display.shift = false;
      done = bound(cm) != Pass;
    } finally {
      cm.display.shift = prevShift;
      cm.state.suppressEdits = false;
    }
    return done;
  }

  function lookupKeyForEditor(cm, name, handle) {
    for (var i = 0; i < cm.state.keyMaps.length; i++) {
      var result = lookupKey(name, cm.state.keyMaps[i], handle, cm);
      if (result) return result;
    }
    return (cm.options.extraKeys && lookupKey(name, cm.options.extraKeys, handle, cm))
      || lookupKey(name, cm.options.keyMap, handle, cm);
  }

  var stopSeq = new Delayed;
  function dispatchKey(cm, name, e, handle) {
    var seq = cm.state.keySeq;
    if (seq) {
      if (isModifierKey(name)) return "handled";
      stopSeq.set(50, function() {
        if (cm.state.keySeq == seq) {
          cm.state.keySeq = null;
          cm.display.input.reset();
        }
      });
      name = seq + " " + name;
    }
    var result = lookupKeyForEditor(cm, name, handle);

    if (result == "multi")
      cm.state.keySeq = name;
    if (result == "handled")
      signalLater(cm, "keyHandled", cm, name, e);

    if (result == "handled" || result == "multi") {
      e_preventDefault(e);
      restartBlink(cm);
    }

    if (seq && !result && /\'$/.test(name)) {
      e_preventDefault(e);
      return true;
    }
    return !!result;
  }

  // Handle a key from the keydown event.
  function handleKeyBinding(cm, e) {
    var name = keyName(e, true);
    if (!name) return false;

    if (e.shiftKey && !cm.state.keySeq) {
      // First try to resolve full name (including 'Shift-'). Failing
      // that, see if there is a cursor-motion command (starting with
      // 'go') bound to the keyname without 'Shift-'.
      return dispatchKey(cm, "Shift-" + name, e, function(b) {return doHandleBinding(cm, b, true);})
          || dispatchKey(cm, name, e, function(b) {
               if (typeof b == "string" ? /^go[A-Z]/.test(b) : b.motion)
                 return doHandleBinding(cm, b);
             });
    } else {
      return dispatchKey(cm, name, e, function(b) { return doHandleBinding(cm, b); });
    }
  }

  // Handle a key from the keypress event
  function handleCharBinding(cm, e, ch) {
    return dispatchKey(cm, "'" + ch + "'", e,
                       function(b) { return doHandleBinding(cm, b, true); });
  }

  var lastStoppedKey = null;
  function onKeyDown(e) {
    var cm = this;
    cm.curOp.focus = activeElt();
    if (signalDOMEvent(cm, e)) return;
    // IE does strange things with escape.
    if (ie && ie_version < 11 && e.keyCode == 27) e.returnValue = false;
    var code = e.keyCode;
    cm.display.shift = code == 16 || e.shiftKey;
    var handled = handleKeyBinding(cm, e);
    if (presto) {
      lastStoppedKey = handled ? code : null;
      // Opera has no cut event... we try to at least catch the key combo
      if (!handled && code == 88 && !hasCopyEvent && (mac ? e.metaKey : e.ctrlKey))
        cm.replaceSelection("", null, "cut");
    }

    // Turn mouse into crosshair when Alt is held on Mac.
    if (code == 18 && !/\bCodeMirror-crosshair\b/.test(cm.display.lineDiv.className))
      showCrossHair(cm);
  }

  function showCrossHair(cm) {
    var lineDiv = cm.display.lineDiv;
    addClass(lineDiv, "CodeMirror-crosshair");

    function up(e) {
      if (e.keyCode == 18 || !e.altKey) {
        rmClass(lineDiv, "CodeMirror-crosshair");
        off(document, "keyup", up);
        off(document, "mouseover", up);
      }
    }
    on(document, "keyup", up);
    on(document, "mouseover", up);
  }

  function onKeyUp(e) {
    if (e.keyCode == 16) this.doc.sel.shift = false;
    signalDOMEvent(this, e);
  }

  function onKeyPress(e) {
    var cm = this;
    if (eventInWidget(cm.display, e) || signalDOMEvent(cm, e) || e.ctrlKey && !e.altKey || mac && e.metaKey) return;
    var keyCode = e.keyCode, charCode = e.charCode;
    if (presto && keyCode == lastStoppedKey) {lastStoppedKey = null; e_preventDefault(e); return;}
    if ((presto && (!e.which || e.which < 10)) && handleKeyBinding(cm, e)) return;
    var ch = String.fromCharCode(charCode == null ? keyCode : charCode);
    if (handleCharBinding(cm, e, ch)) return;
    cm.display.input.onKeyPress(e);
  }

  // FOCUS/BLUR EVENTS

  function delayBlurEvent(cm) {
    cm.state.delayingBlurEvent = true;
    setTimeout(function() {
      if (cm.state.delayingBlurEvent) {
        cm.state.delayingBlurEvent = false;
        onBlur(cm);
      }
    }, 100);
  }

  function onFocus(cm) {
    if (cm.state.delayingBlurEvent) cm.state.delayingBlurEvent = false;

    if (cm.options.readOnly == "nocursor") return;
    if (!cm.state.focused) {
      signal(cm, "focus", cm);
      cm.state.focused = true;
      addClass(cm.display.wrapper, "CodeMirror-focused");
      // This test prevents this from firing when a context
      // menu is closed (since the input reset would kill the
      // select-all detection hack)
      if (!cm.curOp && cm.display.selForContextMenu != cm.doc.sel) {
        cm.display.input.reset();
        if (webkit) setTimeout(function() { cm.display.input.reset(true); }, 20); // Issue #1730
      }
      cm.display.input.receivedFocus();
    }
    restartBlink(cm);
  }
  function onBlur(cm) {
    if (cm.state.delayingBlurEvent) return;

    if (cm.state.focused) {
      signal(cm, "blur", cm);
      cm.state.focused = false;
      rmClass(cm.display.wrapper, "CodeMirror-focused");
    }
    clearInterval(cm.display.blinker);
    setTimeout(function() {if (!cm.state.focused) cm.display.shift = false;}, 150);
  }

  // CONTEXT MENU HANDLING

  // To make the context menu work, we need to briefly unhide the
  // textarea (making it as unobtrusive as possible) to let the
  // right-click take effect on it.
  function onContextMenu(cm, e) {
    if (eventInWidget(cm.display, e) || contextMenuInGutter(cm, e)) return;
    cm.display.input.onContextMenu(e);
  }

  function contextMenuInGutter(cm, e) {
    if (!hasHandler(cm, "gutterContextMenu")) return false;
    return gutterEvent(cm, e, "gutterContextMenu", false, signal);
  }

  // UPDATING

  // Compute the position of the end of a change (its 'to' property
  // refers to the pre-change end).
  var changeEnd = CodeMirror.changeEnd = function(change) {
    if (!change.text) return change.to;
    return Pos(change.from.line + change.text.length - 1,
               lst(change.text).length + (change.text.length == 1 ? change.from.ch : 0));
  };

  // Adjust a position to refer to the post-change position of the
  // same text, or the end of the change if the change covers it.
  function adjustForChange(pos, change) {
    if (cmp(pos, change.from) < 0) return pos;
    if (cmp(pos, change.to) <= 0) return changeEnd(change);

    var line = pos.line + change.text.length - (change.to.line - change.from.line) - 1, ch = pos.ch;
    if (pos.line == change.to.line) ch += changeEnd(change).ch - change.to.ch;
    return Pos(line, ch);
  }

  function computeSelAfterChange(doc, change) {
    var out = [];
    for (var i = 0; i < doc.sel.ranges.length; i++) {
      var range = doc.sel.ranges[i];
      out.push(new Range(adjustForChange(range.anchor, change),
                         adjustForChange(range.head, change)));
    }
    return normalizeSelection(out, doc.sel.primIndex);
  }

  function offsetPos(pos, old, nw) {
    if (pos.line == old.line)
      return Pos(nw.line, pos.ch - old.ch + nw.ch);
    else
      return Pos(nw.line + (pos.line - old.line), pos.ch);
  }

  // Used by replaceSelections to allow moving the selection to the
  // start or around the replaced test. Hint may be "start" or "around".
  function computeReplacedSel(doc, changes, hint) {
    var out = [];
    var oldPrev = Pos(doc.first, 0), newPrev = oldPrev;
    for (var i = 0; i < changes.length; i++) {
      var change = changes[i];
      var from = offsetPos(change.from, oldPrev, newPrev);
      var to = offsetPos(changeEnd(change), oldPrev, newPrev);
      oldPrev = change.to;
      newPrev = to;
      if (hint == "around") {
        var range = doc.sel.ranges[i], inv = cmp(range.head, range.anchor) < 0;
        out[i] = new Range(inv ? to : from, inv ? from : to);
      } else {
        out[i] = new Range(from, from);
      }
    }
    return new Selection(out, doc.sel.primIndex);
  }

  // Allow "beforeChange" event handlers to influence a change
  function filterChange(doc, change, update) {
    var obj = {
      canceled: false,
      from: change.from,
      to: change.to,
      text: change.text,
      origin: change.origin,
      cancel: function() { this.canceled = true; }
    };
    if (update) obj.update = function(from, to, text, origin) {
      if (from) this.from = clipPos(doc, from);
      if (to) this.to = clipPos(doc, to);
      if (text) this.text = text;
      if (origin !== undefined) this.origin = origin;
    };
    signal(doc, "beforeChange", doc, obj);
    if (doc.cm) signal(doc.cm, "beforeChange", doc.cm, obj);

    if (obj.canceled) return null;
    return {from: obj.from, to: obj.to, text: obj.text, origin: obj.origin};
  }

  // Apply a change to a document, and add it to the document's
  // history, and propagating it to all linked documents.
  function makeChange(doc, change, ignoreReadOnly) {
    if (doc.cm) {
      if (!doc.cm.curOp) return operation(doc.cm, makeChange)(doc, change, ignoreReadOnly);
      if (doc.cm.state.suppressEdits) return;
    }

    if (hasHandler(doc, "beforeChange") || doc.cm && hasHandler(doc.cm, "beforeChange")) {
      change = filterChange(doc, change, true);
      if (!change) return;
    }

    // Possibly split or suppress the update based on the presence
    // of read-only spans in its range.
    var split = sawReadOnlySpans && !ignoreReadOnly && removeReadOnlyRanges(doc, change.from, change.to);
    if (split) {
      for (var i = split.length - 1; i >= 0; --i)
        makeChangeInner(doc, {from: split[i].from, to: split[i].to, text: i ? [""] : change.text});
    } else {
      makeChangeInner(doc, change);
    }
  }

  function makeChangeInner(doc, change) {
    if (change.text.length == 1 && change.text[0] == "" && cmp(change.from, change.to) == 0) return;
    var selAfter = computeSelAfterChange(doc, change);
    addChangeToHistory(doc, change, selAfter, doc.cm ? doc.cm.curOp.id : NaN);

    makeChangeSingleDoc(doc, change, selAfter, stretchSpansOverChange(doc, change));
    var rebased = [];

    linkedDocs(doc, function(doc, sharedHist) {
      if (!sharedHist && indexOf(rebased, doc.history) == -1) {
        rebaseHist(doc.history, change);
        rebased.push(doc.history);
      }
      makeChangeSingleDoc(doc, change, null, stretchSpansOverChange(doc, change));
    });
  }

  // Revert a change stored in a document's history.
  function makeChangeFromHistory(doc, type, allowSelectionOnly) {
    if (doc.cm && doc.cm.state.suppressEdits) return;

    var hist = doc.history, event, selAfter = doc.sel;
    var source = type == "undo" ? hist.done : hist.undone, dest = type == "undo" ? hist.undone : hist.done;

    // Verify that there is a useable event (so that ctrl-z won't
    // needlessly clear selection events)
    for (var i = 0; i < source.length; i++) {
      event = source[i];
      if (allowSelectionOnly ? event.ranges && !event.equals(doc.sel) : !event.ranges)
        break;
    }
    if (i == source.length) return;
    hist.lastOrigin = hist.lastSelOrigin = null;

    for (;;) {
      event = source.pop();
      if (event.ranges) {
        pushSelectionToHistory(event, dest);
        if (allowSelectionOnly && !event.equals(doc.sel)) {
          setSelection(doc, event, {clearRedo: false});
          return;
        }
        selAfter = event;
      }
      else break;
    }

    // Build up a reverse change object to add to the opposite history
    // stack (redo when undoing, and vice versa).
    var antiChanges = [];
    pushSelectionToHistory(selAfter, dest);
    dest.push({changes: antiChanges, generation: hist.generation});
    hist.generation = event.generation || ++hist.maxGeneration;

    var filter = hasHandler(doc, "beforeChange") || doc.cm && hasHandler(doc.cm, "beforeChange");

    for (var i = event.changes.length - 1; i >= 0; --i) {
      var change = event.changes[i];
      change.origin = type;
      if (filter && !filterChange(doc, change, false)) {
        source.length = 0;
        return;
      }

      antiChanges.push(historyChangeFromChange(doc, change));

      var after = i ? computeSelAfterChange(doc, change) : lst(source);
      makeChangeSingleDoc(doc, change, after, mergeOldSpans(doc, change));
      if (!i && doc.cm) doc.cm.scrollIntoView({from: change.from, to: changeEnd(change)});
      var rebased = [];

      // Propagate to the linked documents
      linkedDocs(doc, function(doc, sharedHist) {
        if (!sharedHist && indexOf(rebased, doc.history) == -1) {
          rebaseHist(doc.history, change);
          rebased.push(doc.history);
        }
        makeChangeSingleDoc(doc, change, null, mergeOldSpans(doc, change));
      });
    }
  }

  // Sub-views need their line numbers shifted when text is added
  // above or below them in the parent document.
  function shiftDoc(doc, distance) {
    if (distance == 0) return;
    doc.first += distance;
    doc.sel = new Selection(map(doc.sel.ranges, function(range) {
      return new Range(Pos(range.anchor.line + distance, range.anchor.ch),
                       Pos(range.head.line + distance, range.head.ch));
    }), doc.sel.primIndex);
    if (doc.cm) {
      regChange(doc.cm, doc.first, doc.first - distance, distance);
      for (var d = doc.cm.display, l = d.viewFrom; l < d.viewTo; l++)
        regLineChange(doc.cm, l, "gutter");
    }
  }

  // More lower-level change function, handling only a single document
  // (not linked ones).
  function makeChangeSingleDoc(doc, change, selAfter, spans) {
    if (doc.cm && !doc.cm.curOp)
      return operation(doc.cm, makeChangeSingleDoc)(doc, change, selAfter, spans);

    if (change.to.line < doc.first) {
      shiftDoc(doc, change.text.length - 1 - (change.to.line - change.from.line));
      return;
    }
    if (change.from.line > doc.lastLine()) return;

    // Clip the change to the size of this doc
    if (change.from.line < doc.first) {
      var shift = change.text.length - 1 - (doc.first - change.from.line);
      shiftDoc(doc, shift);
      change = {from: Pos(doc.first, 0), to: Pos(change.to.line + shift, change.to.ch),
                text: [lst(change.text)], origin: change.origin};
    }
    var last = doc.lastLine();
    if (change.to.line > last) {
      change = {from: change.from, to: Pos(last, getLine(doc, last).text.length),
                text: [change.text[0]], origin: change.origin};
    }

    change.removed = getBetween(doc, change.from, change.to);

    if (!selAfter) selAfter = computeSelAfterChange(doc, change);
    if (doc.cm) makeChangeSingleDocInEditor(doc.cm, change, spans);
    else updateDoc(doc, change, spans);
    setSelectionNoUndo(doc, selAfter, sel_dontScroll);
  }

  // Handle the interaction of a change to a document with the editor
  // that this document is part of.
  function makeChangeSingleDocInEditor(cm, change, spans) {
    var doc = cm.doc, display = cm.display, from = change.from, to = change.to;

    var recomputeMaxLength = false, checkWidthStart = from.line;
    if (!cm.options.lineWrapping) {
      checkWidthStart = lineNo(visualLine(getLine(doc, from.line)));
      doc.iter(checkWidthStart, to.line + 1, function(line) {
        if (line == display.maxLine) {
          recomputeMaxLength = true;
          return true;
        }
      });
    }

    if (doc.sel.contains(change.from, change.to) > -1)
      signalCursorActivity(cm);

    updateDoc(doc, change, spans, estimateHeight(cm));

    if (!cm.options.lineWrapping) {
      doc.iter(checkWidthStart, from.line + change.text.length, function(line) {
        var len = lineLength(line);
        if (len > display.maxLineLength) {
          display.maxLine = line;
          display.maxLineLength = len;
          display.maxLineChanged = true;
          recomputeMaxLength = false;
        }
      });
      if (recomputeMaxLength) cm.curOp.updateMaxLine = true;
    }

    // Adjust frontier, schedule worker
    doc.frontier = Math.min(doc.frontier, from.line);
    startWorker(cm, 400);

    var lendiff = change.text.length - (to.line - from.line) - 1;
    // Remember that these lines changed, for updating the display
    if (change.full)
      regChange(cm);
    else if (from.line == to.line && change.text.length == 1 && !isWholeLineUpdate(cm.doc, change))
      regLineChange(cm, from.line, "text");
    else
      regChange(cm, from.line, to.line + 1, lendiff);

    var changesHandler = hasHandler(cm, "changes"), changeHandler = hasHandler(cm, "change");
    if (changeHandler || changesHandler) {
      var obj = {
        from: from, to: to,
        text: change.text,
        removed: change.removed,
        origin: change.origin
      };
      if (changeHandler) signalLater(cm, "change", cm, obj);
      if (changesHandler) (cm.curOp.changeObjs || (cm.curOp.changeObjs = [])).push(obj);
    }
    cm.display.selForContextMenu = null;
  }

  function replaceRange(doc, code, from, to, origin) {
    if (!to) to = from;
    if (cmp(to, from) < 0) { var tmp = to; to = from; from = tmp; }
    if (typeof code == "string") code = splitLines(code);
    makeChange(doc, {from: from, to: to, text: code, origin: origin});
  }

  // SCROLLING THINGS INTO VIEW

  // If an editor sits on the top or bottom of the window, partially
  // scrolled out of view, this ensures that the cursor is visible.
  function maybeScrollWindow(cm, coords) {
    if (signalDOMEvent(cm, "scrollCursorIntoView")) return;

    var display = cm.display, box = display.sizer.getBoundingClientRect(), doScroll = null;
    if (coords.top + box.top < 0) doScroll = true;
    else if (coords.bottom + box.top > (window.innerHeight || document.documentElement.clientHeight)) doScroll = false;
    if (doScroll != null && !phantom) {
      var scrollNode = elt("div", "\u200b", null, "position: absolute; top: " +
                           (coords.top - display.viewOffset - paddingTop(cm.display)) + "px; height: " +
                           (coords.bottom - coords.top + scrollGap(cm) + display.barHeight) + "px; left: " +
                           coords.left + "px; width: 2px;");
      cm.display.lineSpace.appendChild(scrollNode);
      scrollNode.scrollIntoView(doScroll);
      cm.display.lineSpace.removeChild(scrollNode);
    }
  }

  // Scroll a given position into view (immediately), verifying that
  // it actually became visible (as line heights are accurately
  // measured, the position of something may 'drift' during drawing).
  function scrollPosIntoView(cm, pos, end, margin) {
    if (margin == null) margin = 0;
    for (var limit = 0; limit < 5; limit++) {
      var changed = false, coords = cursorCoords(cm, pos);
      var endCoords = !end || end == pos ? coords : cursorCoords(cm, end);
      var scrollPos = calculateScrollPos(cm, Math.min(coords.left, endCoords.left),
                                         Math.min(coords.top, endCoords.top) - margin,
                                         Math.max(coords.left, endCoords.left),
                                         Math.max(coords.bottom, endCoords.bottom) + margin);
      var startTop = cm.doc.scrollTop, startLeft = cm.doc.scrollLeft;
      if (scrollPos.scrollTop != null) {
        setScrollTop(cm, scrollPos.scrollTop);
        if (Math.abs(cm.doc.scrollTop - startTop) > 1) changed = true;
      }
      if (scrollPos.scrollLeft != null) {
        setScrollLeft(cm, scrollPos.scrollLeft);
        if (Math.abs(cm.doc.scrollLeft - startLeft) > 1) changed = true;
      }
      if (!changed) break;
    }
    return coords;
  }

  // Scroll a given set of coordinates into view (immediately).
  function scrollIntoView(cm, x1, y1, x2, y2) {
    var scrollPos = calculateScrollPos(cm, x1, y1, x2, y2);
    if (scrollPos.scrollTop != null) setScrollTop(cm, scrollPos.scrollTop);
    if (scrollPos.scrollLeft != null) setScrollLeft(cm, scrollPos.scrollLeft);
  }

  // Calculate a new scroll position needed to scroll the given
  // rectangle into view. Returns an object with scrollTop and
  // scrollLeft properties. When these are undefined, the
  // vertical/horizontal position does not need to be adjusted.
  function calculateScrollPos(cm, x1, y1, x2, y2) {
    var display = cm.display, snapMargin = textHeight(cm.display);
    if (y1 < 0) y1 = 0;
    var screentop = cm.curOp && cm.curOp.scrollTop != null ? cm.curOp.scrollTop : display.scroller.scrollTop;
    var screen = displayHeight(cm), result = {};
    if (y2 - y1 > screen) y2 = y1 + screen;
    var docBottom = cm.doc.height + paddingVert(display);
    var atTop = y1 < snapMargin, atBottom = y2 > docBottom - snapMargin;
    if (y1 < screentop) {
      result.scrollTop = atTop ? 0 : y1;
    } else if (y2 > screentop + screen) {
      var newTop = Math.min(y1, (atBottom ? docBottom : y2) - screen);
      if (newTop != screentop) result.scrollTop = newTop;
    }

    var screenleft = cm.curOp && cm.curOp.scrollLeft != null ? cm.curOp.scrollLeft : display.scroller.scrollLeft;
    var screenw = displayWidth(cm) - (cm.options.fixedGutter ? display.gutters.offsetWidth : 0);
    var tooWide = x2 - x1 > screenw;
    if (tooWide) x2 = x1 + screenw;
    if (x1 < 10)
      result.scrollLeft = 0;
    else if (x1 < screenleft)
      result.scrollLeft = Math.max(0, x1 - (tooWide ? 0 : 10));
    else if (x2 > screenw + screenleft - 3)
      result.scrollLeft = x2 + (tooWide ? 0 : 10) - screenw;
    return result;
  }

  // Store a relative adjustment to the scroll position in the current
  // operation (to be applied when the operation finishes).
  function addToScrollPos(cm, left, top) {
    if (left != null || top != null) resolveScrollToPos(cm);
    if (left != null)
      cm.curOp.scrollLeft = (cm.curOp.scrollLeft == null ? cm.doc.scrollLeft : cm.curOp.scrollLeft) + left;
    if (top != null)
      cm.curOp.scrollTop = (cm.curOp.scrollTop == null ? cm.doc.scrollTop : cm.curOp.scrollTop) + top;
  }

  // Make sure that at the end of the operation the current cursor is
  // shown.
  function ensureCursorVisible(cm) {
    resolveScrollToPos(cm);
    var cur = cm.getCursor(), from = cur, to = cur;
    if (!cm.options.lineWrapping) {
      from = cur.ch ? Pos(cur.line, cur.ch - 1) : cur;
      to = Pos(cur.line, cur.ch + 1);
    }
    cm.curOp.scrollToPos = {from: from, to: to, margin: cm.options.cursorScrollMargin, isCursor: true};
  }

  // When an operation has its scrollToPos property set, and another
  // scroll action is applied before the end of the operation, this
  // 'simulates' scrolling that position into view in a cheap way, so
  // that the effect of intermediate scroll commands is not ignored.
  function resolveScrollToPos(cm) {
    var range = cm.curOp.scrollToPos;
    if (range) {
      cm.curOp.scrollToPos = null;
      var from = estimateCoords(cm, range.from), to = estimateCoords(cm, range.to);
      var sPos = calculateScrollPos(cm, Math.min(from.left, to.left),
                                    Math.min(from.top, to.top) - range.margin,
                                    Math.max(from.right, to.right),
                                    Math.max(from.bottom, to.bottom) + range.margin);
      cm.scrollTo(sPos.scrollLeft, sPos.scrollTop);
    }
  }

  // API UTILITIES

  // Indent the given line. The how parameter can be "smart",
  // "add"/null, "subtract", or "prev". When aggressive is false
  // (typically set to true for forced single-line indents), empty
  // lines are not indented, and places where the mode returns Pass
  // are left alone.
  function indentLine(cm, n, how, aggressive) {
    var doc = cm.doc, state;
    if (how == null) how = "add";
    if (how == "smart") {
      // Fall back to "prev" when the mode doesn't have an indentation
      // method.
      if (!doc.mode.indent) how = "prev";
      else state = getStateBefore(cm, n);
    }

    var tabSize = cm.options.tabSize;
    var line = getLine(doc, n), curSpace = countColumn(line.text, null, tabSize);
    if (line.stateAfter) line.stateAfter = null;
    var curSpaceString = line.text.match(/^\s*/)[0], indentation;
    if (!aggressive && !/\S/.test(line.text)) {
      indentation = 0;
      how = "not";
    } else if (how == "smart") {
      indentation = doc.mode.indent(state, line.text.slice(curSpaceString.length), line.text);
      if (indentation == Pass || indentation > 150) {
        if (!aggressive) return;
        how = "prev";
      }
    }
    if (how == "prev") {
      if (n > doc.first) indentation = countColumn(getLine(doc, n-1).text, null, tabSize);
      else indentation = 0;
    } else if (how == "add") {
      indentation = curSpace + cm.options.indentUnit;
    } else if (how == "subtract") {
      indentation = curSpace - cm.options.indentUnit;
    } else if (typeof how == "number") {
      indentation = curSpace + how;
    }
    indentation = Math.max(0, indentation);

    var indentString = "", pos = 0;
    if (cm.options.indentWithTabs)
      for (var i = Math.floor(indentation / tabSize); i; --i) {pos += tabSize; indentString += "\t";}
    if (pos < indentation) indentString += spaceStr(indentation - pos);

    if (indentString != curSpaceString) {
      replaceRange(doc, indentString, Pos(n, 0), Pos(n, curSpaceString.length), "+input");
      line.stateAfter = null;
      return true;
    } else {
      // Ensure that, if the cursor was in the whitespace at the start
      // of the line, it is moved to the end of that space.
      for (var i = 0; i < doc.sel.ranges.length; i++) {
        var range = doc.sel.ranges[i];
        if (range.head.line == n && range.head.ch < curSpaceString.length) {
          var pos = Pos(n, curSpaceString.length);
          replaceOneSelection(doc, i, new Range(pos, pos));
          break;
        }
      }
    }
  }

  // Utility for applying a change to a line by handle or number,
  // returning the number and optionally registering the line as
  // changed.
  function changeLine(doc, handle, changeType, op) {
    var no = handle, line = handle;
    if (typeof handle == "number") line = getLine(doc, clipLine(doc, handle));
    else no = lineNo(handle);
    if (no == null) return null;
    if (op(line, no) && doc.cm) regLineChange(doc.cm, no, changeType);
    return line;
  }

  // Helper for deleting text near the selection(s), used to implement
  // backspace, delete, and similar functionality.
  function deleteNearSelection(cm, compute) {
    var ranges = cm.doc.sel.ranges, kill = [];
    // Build up a set of ranges to kill first, merging overlapping
    // ranges.
    for (var i = 0; i < ranges.length; i++) {
      var toKill = compute(ranges[i]);
      while (kill.length && cmp(toKill.from, lst(kill).to) <= 0) {
        var replaced = kill.pop();
        if (cmp(replaced.from, toKill.from) < 0) {
          toKill.from = replaced.from;
          break;
        }
      }
      kill.push(toKill);
    }
    // Next, remove those actual ranges.
    runInOp(cm, function() {
      for (var i = kill.length - 1; i >= 0; i--)
        replaceRange(cm.doc, "", kill[i].from, kill[i].to, "+delete");
      ensureCursorVisible(cm);
    });
  }

  // Used for horizontal relative motion. Dir is -1 or 1 (left or
  // right), unit can be "char", "column" (like char, but doesn't
  // cross line boundaries), "word" (across next word), or "group" (to
  // the start of next group of word or non-word-non-whitespace
  // chars). The visually param controls whether, in right-to-left
  // text, direction 1 means to move towards the next index in the
  // string, or towards the character to the right of the current
  // position. The resulting position will have a hitSide=true
  // property if it reached the end of the document.
  function findPosH(doc, pos, dir, unit, visually) {
    var line = pos.line, ch = pos.ch, origDir = dir;
    var lineObj = getLine(doc, line);
    var possible = true;
    function findNextLine() {
      var l = line + dir;
      if (l < doc.first || l >= doc.first + doc.size) return (possible = false);
      line = l;
      return lineObj = getLine(doc, l);
    }
    function moveOnce(boundToLine) {
      var next = (visually ? moveVisually : moveLogically)(lineObj, ch, dir, true);
      if (next == null) {
        if (!boundToLine && findNextLine()) {
          if (visually) ch = (dir < 0 ? lineRight : lineLeft)(lineObj);
          else ch = dir < 0 ? lineObj.text.length : 0;
        } else return (possible = false);
      } else ch = next;
      return true;
    }

    if (unit == "char") moveOnce();
    else if (unit == "column") moveOnce(true);
    else if (unit == "word" || unit == "group") {
      var sawType = null, group = unit == "group";
      var helper = doc.cm && doc.cm.getHelper(pos, "wordChars");
      for (var first = true;; first = false) {
        if (dir < 0 && !moveOnce(!first)) break;
        var cur = lineObj.text.charAt(ch) || "\n";
        var type = isWordChar(cur, helper) ? "w"
          : group && cur == "\n" ? "n"
          : !group || /\s/.test(cur) ? null
          : "p";
        if (group && !first && !type) type = "s";
        if (sawType && sawType != type) {
          if (dir < 0) {dir = 1; moveOnce();}
          break;
        }

        if (type) sawType = type;
        if (dir > 0 && !moveOnce(!first)) break;
      }
    }
    var result = skipAtomic(doc, Pos(line, ch), origDir, true);
    if (!possible) result.hitSide = true;
    return result;
  }

  // For relative vertical movement. Dir may be -1 or 1. Unit can be
  // "page" or "line". The resulting position will have a hitSide=true
  // property if it reached the end of the document.
  function findPosV(cm, pos, dir, unit) {
    var doc = cm.doc, x = pos.left, y;
    if (unit == "page") {
      var pageSize = Math.min(cm.display.wrapper.clientHeight, window.innerHeight || document.documentElement.clientHeight);
      y = pos.top + dir * (pageSize - (dir < 0 ? 1.5 : .5) * textHeight(cm.display));
    } else if (unit == "line") {
      y = dir > 0 ? pos.bottom + 3 : pos.top - 3;
    }
    for (;;) {
      var target = coordsChar(cm, x, y);
      if (!target.outside) break;
      if (dir < 0 ? y <= 0 : y >= doc.height) { target.hitSide = true; break; }
      y += dir * 5;
    }
    return target;
  }

  // EDITOR METHODS

  // The publicly visible API. Note that methodOp(f) means
  // 'wrap f in an operation, performed on its `this` parameter'.

  // This is not the complete set of editor methods. Most of the
  // methods defined on the Doc type are also injected into
  // CodeMirror.prototype, for backwards compatibility and
  // convenience.

  CodeMirror.prototype = {
    constructor: CodeMirror,
    focus: function(){window.focus(); this.display.input.focus();},

    setOption: function(option, value) {
      var options = this.options, old = options[option];
      if (options[option] == value && option != "mode") return;
      options[option] = value;
      if (optionHandlers.hasOwnProperty(option))
        operation(this, optionHandlers[option])(this, value, old);
    },

    getOption: function(option) {return this.options[option];},
    getDoc: function() {return this.doc;},

    addKeyMap: function(map, bottom) {
      this.state.keyMaps[bottom ? "push" : "unshift"](getKeyMap(map));
    },
    removeKeyMap: function(map) {
      var maps = this.state.keyMaps;
      for (var i = 0; i < maps.length; ++i)
        if (maps[i] == map || maps[i].name == map) {
          maps.splice(i, 1);
          return true;
        }
    },

    addOverlay: methodOp(function(spec, options) {
      var mode = spec.token ? spec : CodeMirror.getMode(this.options, spec);
      if (mode.startState) throw new Error("Overlays may not be stateful.");
      this.state.overlays.push({mode: mode, modeSpec: spec, opaque: options && options.opaque});
      this.state.modeGen++;
      regChange(this);
    }),
    removeOverlay: methodOp(function(spec) {
      var overlays = this.state.overlays;
      for (var i = 0; i < overlays.length; ++i) {
        var cur = overlays[i].modeSpec;
        if (cur == spec || typeof spec == "string" && cur.name == spec) {
          overlays.splice(i, 1);
          this.state.modeGen++;
          regChange(this);
          return;
        }
      }
    }),

    indentLine: methodOp(function(n, dir, aggressive) {
      if (typeof dir != "string" && typeof dir != "number") {
        if (dir == null) dir = this.options.smartIndent ? "smart" : "prev";
        else dir = dir ? "add" : "subtract";
      }
      if (isLine(this.doc, n)) indentLine(this, n, dir, aggressive);
    }),
    indentSelection: methodOp(function(how) {
      var ranges = this.doc.sel.ranges, end = -1;
      for (var i = 0; i < ranges.length; i++) {
        var range = ranges[i];
        if (!range.empty()) {
          var from = range.from(), to = range.to();
          var start = Math.max(end, from.line);
          end = Math.min(this.lastLine(), to.line - (to.ch ? 0 : 1)) + 1;
          for (var j = start; j < end; ++j)
            indentLine(this, j, how);
          var newRanges = this.doc.sel.ranges;
          if (from.ch == 0 && ranges.length == newRanges.length && newRanges[i].from().ch > 0)
            replaceOneSelection(this.doc, i, new Range(from, newRanges[i].to()), sel_dontScroll);
        } else if (range.head.line > end) {
          indentLine(this, range.head.line, how, true);
          end = range.head.line;
          if (i == this.doc.sel.primIndex) ensureCursorVisible(this);
        }
      }
    }),

    // Fetch the parser token for a given character. Useful for hacks
    // that want to inspect the mode state (say, for completion).
    getTokenAt: function(pos, precise) {
      return takeToken(this, pos, precise);
    },

    getLineTokens: function(line, precise) {
      return takeToken(this, Pos(line), precise, true);
    },

    getTokenTypeAt: function(pos) {
      pos = clipPos(this.doc, pos);
      var styles = getLineStyles(this, getLine(this.doc, pos.line));
      var before = 0, after = (styles.length - 1) / 2, ch = pos.ch;
      var type;
      if (ch == 0) type = styles[2];
      else for (;;) {
        var mid = (before + after) >> 1;
        if ((mid ? styles[mid * 2 - 1] : 0) >= ch) after = mid;
        else if (styles[mid * 2 + 1] < ch) before = mid + 1;
        else { type = styles[mid * 2 + 2]; break; }
      }
      var cut = type ? type.indexOf("cm-overlay ") : -1;
      return cut < 0 ? type : cut == 0 ? null : type.slice(0, cut - 1);
    },

    getModeAt: function(pos) {
      var mode = this.doc.mode;
      if (!mode.innerMode) return mode;
      return CodeMirror.innerMode(mode, this.getTokenAt(pos).state).mode;
    },

    getHelper: function(pos, type) {
      return this.getHelpers(pos, type)[0];
    },

    getHelpers: function(pos, type) {
      var found = [];
      if (!helpers.hasOwnProperty(type)) return found;
      var help = helpers[type], mode = this.getModeAt(pos);
      if (typeof mode[type] == "string") {
        if (help[mode[type]]) found.push(help[mode[type]]);
      } else if (mode[type]) {
        for (var i = 0; i < mode[type].length; i++) {
          var val = help[mode[type][i]];
          if (val) found.push(val);
        }
      } else if (mode.helperType && help[mode.helperType]) {
        found.push(help[mode.helperType]);
      } else if (help[mode.name]) {
        found.push(help[mode.name]);
      }
      for (var i = 0; i < help._global.length; i++) {
        var cur = help._global[i];
        if (cur.pred(mode, this) && indexOf(found, cur.val) == -1)
          found.push(cur.val);
      }
      return found;
    },

    getStateAfter: function(line, precise) {
      var doc = this.doc;
      line = clipLine(doc, line == null ? doc.first + doc.size - 1: line);
      return getStateBefore(this, line + 1, precise);
    },

    cursorCoords: function(start, mode) {
      var pos, range = this.doc.sel.primary();
      if (start == null) pos = range.head;
      else if (typeof start == "object") pos = clipPos(this.doc, start);
      else pos = start ? range.from() : range.to();
      return cursorCoords(this, pos, mode || "page");
    },

    charCoords: function(pos, mode) {
      return charCoords(this, clipPos(this.doc, pos), mode || "page");
    },

    coordsChar: function(coords, mode) {
      coords = fromCoordSystem(this, coords, mode || "page");
      return coordsChar(this, coords.left, coords.top);
    },

    lineAtHeight: function(height, mode) {
      height = fromCoordSystem(this, {top: height, left: 0}, mode || "page").top;
      return lineAtHeight(this.doc, height + this.display.viewOffset);
    },
    heightAtLine: function(line, mode) {
      var end = false, lineObj;
      if (typeof line == "number") {
        var last = this.doc.first + this.doc.size - 1;
        if (line < this.doc.first) line = this.doc.first;
        else if (line > last) { line = last; end = true; }
        lineObj = getLine(this.doc, line);
      } else {
        lineObj = line;
      }
      return intoCoordSystem(this, lineObj, {top: 0, left: 0}, mode || "page").top +
        (end ? this.doc.height - heightAtLine(lineObj) : 0);
    },

    defaultTextHeight: function() { return textHeight(this.display); },
    defaultCharWidth: function() { return charWidth(this.display); },

    setGutterMarker: methodOp(function(line, gutterID, value) {
      return changeLine(this.doc, line, "gutter", function(line) {
        var markers = line.gutterMarkers || (line.gutterMarkers = {});
        markers[gutterID] = value;
        if (!value && isEmpty(markers)) line.gutterMarkers = null;
        return true;
      });
    }),

    clearGutter: methodOp(function(gutterID) {
      var cm = this, doc = cm.doc, i = doc.first;
      doc.iter(function(line) {
        if (line.gutterMarkers && line.gutterMarkers[gutterID]) {
          line.gutterMarkers[gutterID] = null;
          regLineChange(cm, i, "gutter");
          if (isEmpty(line.gutterMarkers)) line.gutterMarkers = null;
        }
        ++i;
      });
    }),

    lineInfo: function(line) {
      if (typeof line == "number") {
        if (!isLine(this.doc, line)) return null;
        var n = line;
        line = getLine(this.doc, line);
        if (!line) return null;
      } else {
        var n = lineNo(line);
        if (n == null) return null;
      }
      return {line: n, handle: line, text: line.text, gutterMarkers: line.gutterMarkers,
              textClass: line.textClass, bgClass: line.bgClass, wrapClass: line.wrapClass,
              widgets: line.widgets};
    },

    getViewport: function() { return {from: this.display.viewFrom, to: this.display.viewTo};},

    addWidget: function(pos, node, scroll, vert, horiz) {
      var display = this.display;
      pos = cursorCoords(this, clipPos(this.doc, pos));
      var top = pos.bottom, left = pos.left;
      node.style.position = "absolute";
      node.setAttribute("cm-ignore-events", "true");
      this.display.input.setUneditable(node);
      display.sizer.appendChild(node);
      if (vert == "over") {
        top = pos.top;
      } else if (vert == "above" || vert == "near") {
        var vspace = Math.max(display.wrapper.clientHeight, this.doc.height),
        hspace = Math.max(display.sizer.clientWidth, display.lineSpace.clientWidth);
        // Default to positioning above (if specified and possible); otherwise default to positioning below
        if ((vert == 'above' || pos.bottom + node.offsetHeight > vspace) && pos.top > node.offsetHeight)
          top = pos.top - node.offsetHeight;
        else if (pos.bottom + node.offsetHeight <= vspace)
          top = pos.bottom;
        if (left + node.offsetWidth > hspace)
          left = hspace - node.offsetWidth;
      }
      node.style.top = top + "px";
      node.style.left = node.style.right = "";
      if (horiz == "right") {
        left = display.sizer.clientWidth - node.offsetWidth;
        node.style.right = "0px";
      } else {
        if (horiz == "left") left = 0;
        else if (horiz == "middle") left = (display.sizer.clientWidth - node.offsetWidth) / 2;
        node.style.left = left + "px";
      }
      if (scroll)
        scrollIntoView(this, left, top, left + node.offsetWidth, top + node.offsetHeight);
    },

    triggerOnKeyDown: methodOp(onKeyDown),
    triggerOnKeyPress: methodOp(onKeyPress),
    triggerOnKeyUp: onKeyUp,

    execCommand: function(cmd) {
      if (commands.hasOwnProperty(cmd))
        return commands[cmd](this);
    },

    triggerElectric: methodOp(function(text) { triggerElectric(this, text); }),

    findPosH: function(from, amount, unit, visually) {
      var dir = 1;
      if (amount < 0) { dir = -1; amount = -amount; }
      for (var i = 0, cur = clipPos(this.doc, from); i < amount; ++i) {
        cur = findPosH(this.doc, cur, dir, unit, visually);
        if (cur.hitSide) break;
      }
      return cur;
    },

    moveH: methodOp(function(dir, unit) {
      var cm = this;
      cm.extendSelectionsBy(function(range) {
        if (cm.display.shift || cm.doc.extend || range.empty())
          return findPosH(cm.doc, range.head, dir, unit, cm.options.rtlMoveVisually);
        else
          return dir < 0 ? range.from() : range.to();
      }, sel_move);
    }),

    deleteH: methodOp(function(dir, unit) {
      var sel = this.doc.sel, doc = this.doc;
      if (sel.somethingSelected())
        doc.replaceSelection("", null, "+delete");
      else
        deleteNearSelection(this, function(range) {
          var other = findPosH(doc, range.head, dir, unit, false);
          return dir < 0 ? {from: other, to: range.head} : {from: range.head, to: other};
        });
    }),

    findPosV: function(from, amount, unit, goalColumn) {
      var dir = 1, x = goalColumn;
      if (amount < 0) { dir = -1; amount = -amount; }
      for (var i = 0, cur = clipPos(this.doc, from); i < amount; ++i) {
        var coords = cursorCoords(this, cur, "div");
        if (x == null) x = coords.left;
        else coords.left = x;
        cur = findPosV(this, coords, dir, unit);
        if (cur.hitSide) break;
      }
      return cur;
    },

    moveV: methodOp(function(dir, unit) {
      var cm = this, doc = this.doc, goals = [];
      var collapse = !cm.display.shift && !doc.extend && doc.sel.somethingSelected();
      doc.extendSelectionsBy(function(range) {
        if (collapse)
          return dir < 0 ? range.from() : range.to();
        var headPos = cursorCoords(cm, range.head, "div");
        if (range.goalColumn != null) headPos.left = range.goalColumn;
        goals.push(headPos.left);
        var pos = findPosV(cm, headPos, dir, unit);
        if (unit == "page" && range == doc.sel.primary())
          addToScrollPos(cm, null, charCoords(cm, pos, "div").top - headPos.top);
        return pos;
      }, sel_move);
      if (goals.length) for (var i = 0; i < doc.sel.ranges.length; i++)
        doc.sel.ranges[i].goalColumn = goals[i];
    }),

    // Find the word at the given position (as returned by coordsChar).
    findWordAt: function(pos) {
      var doc = this.doc, line = getLine(doc, pos.line).text;
      var start = pos.ch, end = pos.ch;
      if (line) {
        var helper = this.getHelper(pos, "wordChars");
        if ((pos.xRel < 0 || end == line.length) && start) --start; else ++end;
        var startChar = line.charAt(start);
        var check = isWordChar(startChar, helper)
          ? function(ch) { return isWordChar(ch, helper); }
          : /\s/.test(startChar) ? function(ch) {return /\s/.test(ch);}
          : function(ch) {return !/\s/.test(ch) && !isWordChar(ch);};
        while (start > 0 && check(line.charAt(start - 1))) --start;
        while (end < line.length && check(line.charAt(end))) ++end;
      }
      return new Range(Pos(pos.line, start), Pos(pos.line, end));
    },

    toggleOverwrite: function(value) {
      if (value != null && value == this.state.overwrite) return;
      if (this.state.overwrite = !this.state.overwrite)
        addClass(this.display.cursorDiv, "CodeMirror-overwrite");
      else
        rmClass(this.display.cursorDiv, "CodeMirror-overwrite");

      signal(this, "overwriteToggle", this, this.state.overwrite);
    },
    hasFocus: function() { return this.display.input.getField() == activeElt(); },

    scrollTo: methodOp(function(x, y) {
      if (x != null || y != null) resolveScrollToPos(this);
      if (x != null) this.curOp.scrollLeft = x;
      if (y != null) this.curOp.scrollTop = y;
    }),
    getScrollInfo: function() {
      var scroller = this.display.scroller;
      return {left: scroller.scrollLeft, top: scroller.scrollTop,
              height: scroller.scrollHeight - scrollGap(this) - this.display.barHeight,
              width: scroller.scrollWidth - scrollGap(this) - this.display.barWidth,
              clientHeight: displayHeight(this), clientWidth: displayWidth(this)};
    },

    scrollIntoView: methodOp(function(range, margin) {
      if (range == null) {
        range = {from: this.doc.sel.primary().head, to: null};
        if (margin == null) margin = this.options.cursorScrollMargin;
      } else if (typeof range == "number") {
        range = {from: Pos(range, 0), to: null};
      } else if (range.from == null) {
        range = {from: range, to: null};
      }
      if (!range.to) range.to = range.from;
      range.margin = margin || 0;

      if (range.from.line != null) {
        resolveScrollToPos(this);
        this.curOp.scrollToPos = range;
      } else {
        var sPos = calculateScrollPos(this, Math.min(range.from.left, range.to.left),
                                      Math.min(range.from.top, range.to.top) - range.margin,
                                      Math.max(range.from.right, range.to.right),
                                      Math.max(range.from.bottom, range.to.bottom) + range.margin);
        this.scrollTo(sPos.scrollLeft, sPos.scrollTop);
      }
    }),

    setSize: methodOp(function(width, height) {
      var cm = this;
      function interpret(val) {
        return typeof val == "number" || /^\d+$/.test(String(val)) ? val + "px" : val;
      }
      if (width != null) cm.display.wrapper.style.width = interpret(width);
      if (height != null) cm.display.wrapper.style.height = interpret(height);
      if (cm.options.lineWrapping) clearLineMeasurementCache(this);
      var lineNo = cm.display.viewFrom;
      cm.doc.iter(lineNo, cm.display.viewTo, function(line) {
        if (line.widgets) for (var i = 0; i < line.widgets.length; i++)
          if (line.widgets[i].noHScroll) { regLineChange(cm, lineNo, "widget"); break; }
        ++lineNo;
      });
      cm.curOp.forceUpdate = true;
      signal(cm, "refresh", this);
    }),

    operation: function(f){return runInOp(this, f);},

    refresh: methodOp(function() {
      var oldHeight = this.display.cachedTextHeight;
      regChange(this);
      this.curOp.forceUpdate = true;
      clearCaches(this);
      this.scrollTo(this.doc.scrollLeft, this.doc.scrollTop);
      updateGutterSpace(this);
      if (oldHeight == null || Math.abs(oldHeight - textHeight(this.display)) > .5)
        estimateLineHeights(this);
      signal(this, "refresh", this);
    }),

    swapDoc: methodOp(function(doc) {
      var old = this.doc;
      old.cm = null;
      attachDoc(this, doc);
      clearCaches(this);
      this.display.input.reset();
      this.scrollTo(doc.scrollLeft, doc.scrollTop);
      this.curOp.forceScroll = true;
      signalLater(this, "swapDoc", this, old);
      return old;
    }),

    getInputField: function(){return this.display.input.getField();},
    getWrapperElement: function(){return this.display.wrapper;},
    getScrollerElement: function(){return this.display.scroller;},
    getGutterElement: function(){return this.display.gutters;}
  };
  eventMixin(CodeMirror);

  // OPTION DEFAULTS

  // The default configuration options.
  var defaults = CodeMirror.defaults = {};
  // Functions to run when options are changed.
  var optionHandlers = CodeMirror.optionHandlers = {};

  function option(name, deflt, handle, notOnInit) {
    CodeMirror.defaults[name] = deflt;
    if (handle) optionHandlers[name] =
      notOnInit ? function(cm, val, old) {if (old != Init) handle(cm, val, old);} : handle;
  }

  // Passed to option handlers when there is no old value.
  var Init = CodeMirror.Init = {toString: function(){return "CodeMirror.Init";}};

  // These two are, on init, called from the constructor because they
  // have to be initialized before the editor can start at all.
  option("value", "", function(cm, val) {
    cm.setValue(val);
  }, true);
  option("mode", null, function(cm, val) {
    cm.doc.modeOption = val;
    loadMode(cm);
  }, true);

  option("indentUnit", 2, loadMode, true);
  option("indentWithTabs", false);
  option("smartIndent", true);
  option("tabSize", 4, function(cm) {
    resetModeState(cm);
    clearCaches(cm);
    regChange(cm);
  }, true);
  option("specialChars", /[\t\u0000-\u0019\u00ad\u200b-\u200f\u2028\u2029\ufeff]/g, function(cm, val, old) {
    cm.state.specialChars = new RegExp(val.source + (val.test("\t") ? "" : "|\t"), "g");
    if (old != CodeMirror.Init) cm.refresh();
  });
  option("specialCharPlaceholder", defaultSpecialCharPlaceholder, function(cm) {cm.refresh();}, true);
  option("electricChars", true);
  option("inputStyle", mobile ? "contenteditable" : "textarea", function() {
    throw new Error("inputStyle can not (yet) be changed in a running editor"); // FIXME
  }, true);
  option("rtlMoveVisually", !windows);
  option("wholeLineUpdateBefore", true);

  option("theme", "default", function(cm) {
    themeChanged(cm);
    guttersChanged(cm);
  }, true);
  option("keyMap", "default", function(cm, val, old) {
    var next = getKeyMap(val);
    var prev = old != CodeMirror.Init && getKeyMap(old);
    if (prev && prev.detach) prev.detach(cm, next);
    if (next.attach) next.attach(cm, prev || null);
  });
  option("extraKeys", null);

  option("lineWrapping", false, wrappingChanged, true);
  option("gutters", [], function(cm) {
    setGuttersForLineNumbers(cm.options);
    guttersChanged(cm);
  }, true);
  option("fixedGutter", true, function(cm, val) {
    cm.display.gutters.style.left = val ? compensateForHScroll(cm.display) + "px" : "0";
    cm.refresh();
  }, true);
  option("coverGutterNextToScrollbar", false, function(cm) {updateScrollbars(cm);}, true);
  option("scrollbarStyle", "native", function(cm) {
    initScrollbars(cm);
    updateScrollbars(cm);
    cm.display.scrollbars.setScrollTop(cm.doc.scrollTop);
    cm.display.scrollbars.setScrollLeft(cm.doc.scrollLeft);
  }, true);
  option("lineNumbers", false, function(cm) {
    setGuttersForLineNumbers(cm.options);
    guttersChanged(cm);
  }, true);
  option("firstLineNumber", 1, guttersChanged, true);
  option("lineNumberFormatter", function(integer) {return integer;}, guttersChanged, true);
  option("showCursorWhenSelecting", false, updateSelection, true);

  option("resetSelectionOnContextMenu", true);
  option("lineWiseCopyCut", true);

  option("readOnly", false, function(cm, val) {
    if (val == "nocursor") {
      onBlur(cm);
      cm.display.input.blur();
      cm.display.disabled = true;
    } else {
      cm.display.disabled = false;
      if (!val) cm.display.input.reset();
    }
  });
  option("disableInput", false, function(cm, val) {if (!val) cm.display.input.reset();}, true);
  option("dragDrop", true, dragDropChanged);

  option("cursorBlinkRate", 530);
  option("cursorScrollMargin", 0);
  option("cursorHeight", 1, updateSelection, true);
  option("singleCursorHeightPerLine", true, updateSelection, true);
  option("workTime", 100);
  option("workDelay", 100);
  option("flattenSpans", true, resetModeState, true);
  option("addModeClass", false, resetModeState, true);
  option("pollInterval", 100);
  option("undoDepth", 200, function(cm, val){cm.doc.history.undoDepth = val;});
  option("historyEventDelay", 1250);
  option("viewportMargin", 10, function(cm){cm.refresh();}, true);
  option("maxHighlightLength", 10000, resetModeState, true);
  option("moveInputWithCursor", true, function(cm, val) {
    if (!val) cm.display.input.resetPosition();
  });

  option("tabindex", null, function(cm, val) {
    cm.display.input.getField().tabIndex = val || "";
  });
  option("autofocus", null);

  // MODE DEFINITION AND QUERYING

  // Known modes, by name and by MIME
  var modes = CodeMirror.modes = {}, mimeModes = CodeMirror.mimeModes = {};

  // Extra arguments are stored as the mode's dependencies, which is
  // used by (legacy) mechanisms like loadmode.js to automatically
  // load a mode. (Preferred mechanism is the require/define calls.)
  CodeMirror.defineMode = function(name, mode) {
    if (!CodeMirror.defaults.mode && name != "null") CodeMirror.defaults.mode = name;
    if (arguments.length > 2)
      mode.dependencies = Array.prototype.slice.call(arguments, 2);
    modes[name] = mode;
  };

  CodeMirror.defineMIME = function(mime, spec) {
    mimeModes[mime] = spec;
  };

  // Given a MIME type, a {name, ...options} config object, or a name
  // string, return a mode config object.
  CodeMirror.resolveMode = function(spec) {
    if (typeof spec == "string" && mimeModes.hasOwnProperty(spec)) {
      spec = mimeModes[spec];
    } else if (spec && typeof spec.name == "string" && mimeModes.hasOwnProperty(spec.name)) {
      var found = mimeModes[spec.name];
      if (typeof found == "string") found = {name: found};
      spec = createObj(found, spec);
      spec.name = found.name;
    } else if (typeof spec == "string" && /^[\w\-]+\/[\w\-]+\+xml$/.test(spec)) {
      return CodeMirror.resolveMode("application/xml");
    }
    if (typeof spec == "string") return {name: spec};
    else return spec || {name: "null"};
  };

  // Given a mode spec (anything that resolveMode accepts), find and
  // initialize an actual mode object.
  CodeMirror.getMode = function(options, spec) {
    var spec = CodeMirror.resolveMode(spec);
    var mfactory = modes[spec.name];
    if (!mfactory) return CodeMirror.getMode(options, "text/plain");
    var modeObj = mfactory(options, spec);
    if (modeExtensions.hasOwnProperty(spec.name)) {
      var exts = modeExtensions[spec.name];
      for (var prop in exts) {
        if (!exts.hasOwnProperty(prop)) continue;
        if (modeObj.hasOwnProperty(prop)) modeObj["_" + prop] = modeObj[prop];
        modeObj[prop] = exts[prop];
      }
    }
    modeObj.name = spec.name;
    if (spec.helperType) modeObj.helperType = spec.helperType;
    if (spec.modeProps) for (var prop in spec.modeProps)
      modeObj[prop] = spec.modeProps[prop];

    return modeObj;
  };

  // Minimal default mode.
  CodeMirror.defineMode("null", function() {
    return {token: function(stream) {stream.skipToEnd();}};
  });
  CodeMirror.defineMIME("text/plain", "null");

  // This can be used to attach properties to mode objects from
  // outside the actual mode definition.
  var modeExtensions = CodeMirror.modeExtensions = {};
  CodeMirror.extendMode = function(mode, properties) {
    var exts = modeExtensions.hasOwnProperty(mode) ? modeExtensions[mode] : (modeExtensions[mode] = {});
    copyObj(properties, exts);
  };

  // EXTENSIONS

  CodeMirror.defineExtension = function(name, func) {
    CodeMirror.prototype[name] = func;
  };
  CodeMirror.defineDocExtension = function(name, func) {
    Doc.prototype[name] = func;
  };
  CodeMirror.defineOption = option;

  var initHooks = [];
  CodeMirror.defineInitHook = function(f) {initHooks.push(f);};

  var helpers = CodeMirror.helpers = {};
  CodeMirror.registerHelper = function(type, name, value) {
    if (!helpers.hasOwnProperty(type)) helpers[type] = CodeMirror[type] = {_global: []};
    helpers[type][name] = value;
  };
  CodeMirror.registerGlobalHelper = function(type, name, predicate, value) {
    CodeMirror.registerHelper(type, name, value);
    helpers[type]._global.push({pred: predicate, val: value});
  };

  // MODE STATE HANDLING

  // Utility functions for working with state. Exported because nested
  // modes need to do this for their inner modes.

  var copyState = CodeMirror.copyState = function(mode, state) {
    if (state === true) return state;
    if (mode.copyState) return mode.copyState(state);
    var nstate = {};
    for (var n in state) {
      var val = state[n];
      if (val instanceof Array) val = val.concat([]);
      nstate[n] = val;
    }
    return nstate;
  };

  var startState = CodeMirror.startState = function(mode, a1, a2) {
    return mode.startState ? mode.startState(a1, a2) : true;
  };

  // Given a mode and a state (for that mode), find the inner mode and
  // state at the position that the state refers to.
  CodeMirror.innerMode = function(mode, state) {
    while (mode.innerMode) {
      var info = mode.innerMode(state);
      if (!info || info.mode == mode) break;
      state = info.state;
      mode = info.mode;
    }
    return info || {mode: mode, state: state};
  };

  // STANDARD COMMANDS

  // Commands are parameter-less actions that can be performed on an
  // editor, mostly used for keybindings.
  var commands = CodeMirror.commands = {
    selectAll: function(cm) {cm.setSelection(Pos(cm.firstLine(), 0), Pos(cm.lastLine()), sel_dontScroll);},
    singleSelection: function(cm) {
      cm.setSelection(cm.getCursor("anchor"), cm.getCursor("head"), sel_dontScroll);
    },
    killLine: function(cm) {
      deleteNearSelection(cm, function(range) {
        if (range.empty()) {
          var len = getLine(cm.doc, range.head.line).text.length;
          if (range.head.ch == len && range.head.line < cm.lastLine())
            return {from: range.head, to: Pos(range.head.line + 1, 0)};
          else
            return {from: range.head, to: Pos(range.head.line, len)};
        } else {
          return {from: range.from(), to: range.to()};
        }
      });
    },
    deleteLine: function(cm) {
      deleteNearSelection(cm, function(range) {
        return {from: Pos(range.from().line, 0),
                to: clipPos(cm.doc, Pos(range.to().line + 1, 0))};
      });
    },
    delLineLeft: function(cm) {
      deleteNearSelection(cm, function(range) {
        return {from: Pos(range.from().line, 0), to: range.from()};
      });
    },
    delWrappedLineLeft: function(cm) {
      deleteNearSelection(cm, function(range) {
        var top = cm.charCoords(range.head, "div").top + 5;
        var leftPos = cm.coordsChar({left: 0, top: top}, "div");
        return {from: leftPos, to: range.from()};
      });
    },
    delWrappedLineRight: function(cm) {
      deleteNearSelection(cm, function(range) {
        var top = cm.charCoords(range.head, "div").top + 5;
        var rightPos = cm.coordsChar({left: cm.display.lineDiv.offsetWidth + 100, top: top}, "div");
        return {from: range.from(), to: rightPos };
      });
    },
    undo: function(cm) {cm.undo();},
    redo: function(cm) {cm.redo();},
    undoSelection: function(cm) {cm.undoSelection();},
    redoSelection: function(cm) {cm.redoSelection();},
    goDocStart: function(cm) {cm.extendSelection(Pos(cm.firstLine(), 0));},
    goDocEnd: function(cm) {cm.extendSelection(Pos(cm.lastLine()));},
    goLineStart: function(cm) {
      cm.extendSelectionsBy(function(range) { return lineStart(cm, range.head.line); },
                            {origin: "+move", bias: 1});
    },
    goLineStartSmart: function(cm) {
      cm.extendSelectionsBy(function(range) {
        return lineStartSmart(cm, range.head);
      }, {origin: "+move", bias: 1});
    },
    goLineEnd: function(cm) {
      cm.extendSelectionsBy(function(range) { return lineEnd(cm, range.head.line); },
                            {origin: "+move", bias: -1});
    },
    goLineRight: function(cm) {
      cm.extendSelectionsBy(function(range) {
        var top = cm.charCoords(range.head, "div").top + 5;
        return cm.coordsChar({left: cm.display.lineDiv.offsetWidth + 100, top: top}, "div");
      }, sel_move);
    },
    goLineLeft: function(cm) {
      cm.extendSelectionsBy(function(range) {
        var top = cm.charCoords(range.head, "div").top + 5;
        return cm.coordsChar({left: 0, top: top}, "div");
      }, sel_move);
    },
    goLineLeftSmart: function(cm) {
      cm.extendSelectionsBy(function(range) {
        var top = cm.charCoords(range.head, "div").top + 5;
        var pos = cm.coordsChar({left: 0, top: top}, "div");
        if (pos.ch < cm.getLine(pos.line).search(/\S/)) return lineStartSmart(cm, range.head);
        return pos;
      }, sel_move);
    },
    goLineUp: function(cm) {cm.moveV(-1, "line");},
    goLineDown: function(cm) {cm.moveV(1, "line");},
    goPageUp: function(cm) {cm.moveV(-1, "page");},
    goPageDown: function(cm) {cm.moveV(1, "page");},
    goCharLeft: function(cm) {cm.moveH(-1, "char");},
    goCharRight: function(cm) {cm.moveH(1, "char");},
    goColumnLeft: function(cm) {cm.moveH(-1, "column");},
    goColumnRight: function(cm) {cm.moveH(1, "column");},
    goWordLeft: function(cm) {cm.moveH(-1, "word");},
    goGroupRight: function(cm) {cm.moveH(1, "group");},
    goGroupLeft: function(cm) {cm.moveH(-1, "group");},
    goWordRight: function(cm) {cm.moveH(1, "word");},
    delCharBefore: function(cm) {cm.deleteH(-1, "char");},
    delCharAfter: function(cm) {cm.deleteH(1, "char");},
    delWordBefore: function(cm) {cm.deleteH(-1, "word");},
    delWordAfter: function(cm) {cm.deleteH(1, "word");},
    delGroupBefore: function(cm) {cm.deleteH(-1, "group");},
    delGroupAfter: function(cm) {cm.deleteH(1, "group");},
    indentAuto: function(cm) {cm.indentSelection("smart");},
    indentMore: function(cm) {cm.indentSelection("add");},
    indentLess: function(cm) {cm.indentSelection("subtract");},
    insertTab: function(cm) {cm.replaceSelection("\t");},
    insertSoftTab: function(cm) {
      var spaces = [], ranges = cm.listSelections(), tabSize = cm.options.tabSize;
      for (var i = 0; i < ranges.length; i++) {
        var pos = ranges[i].from();
        var col = countColumn(cm.getLine(pos.line), pos.ch, tabSize);
        spaces.push(new Array(tabSize - col % tabSize + 1).join(" "));
      }
      cm.replaceSelections(spaces);
    },
    defaultTab: function(cm) {
      if (cm.somethingSelected()) cm.indentSelection("add");
      else cm.execCommand("insertTab");
    },
    transposeChars: function(cm) {
      runInOp(cm, function() {
        var ranges = cm.listSelections(), newSel = [];
        for (var i = 0; i < ranges.length; i++) {
          var cur = ranges[i].head, line = getLine(cm.doc, cur.line).text;
          if (line) {
            if (cur.ch == line.length) cur = new Pos(cur.line, cur.ch - 1);
            if (cur.ch > 0) {
              cur = new Pos(cur.line, cur.ch + 1);
              cm.replaceRange(line.charAt(cur.ch - 1) + line.charAt(cur.ch - 2),
                              Pos(cur.line, cur.ch - 2), cur, "+transpose");
            } else if (cur.line > cm.doc.first) {
              var prev = getLine(cm.doc, cur.line - 1).text;
              if (prev)
                cm.replaceRange(line.charAt(0) + "\n" + prev.charAt(prev.length - 1),
                                Pos(cur.line - 1, prev.length - 1), Pos(cur.line, 1), "+transpose");
            }
          }
          newSel.push(new Range(cur, cur));
        }
        cm.setSelections(newSel);
      });
    },
    newlineAndIndent: function(cm) {
      runInOp(cm, function() {
        var len = cm.listSelections().length;
        for (var i = 0; i < len; i++) {
          var range = cm.listSelections()[i];
          cm.replaceRange("\n", range.anchor, range.head, "+input");
          cm.indentLine(range.from().line + 1, null, true);
          ensureCursorVisible(cm);
        }
      });
    },
    toggleOverwrite: function(cm) {cm.toggleOverwrite();}
  };


  // STANDARD KEYMAPS

  var keyMap = CodeMirror.keyMap = {};

  keyMap.basic = {
    "Left": "goCharLeft", "Right": "goCharRight", "Up": "goLineUp", "Down": "goLineDown",
    "End": "goLineEnd", "Home": "goLineStartSmart", "PageUp": "goPageUp", "PageDown": "goPageDown",
    "Delete": "delCharAfter", "Backspace": "delCharBefore", "Shift-Backspace": "delCharBefore",
    "Tab": "defaultTab", "Shift-Tab": "indentAuto",
    "Enter": "newlineAndIndent", "Insert": "toggleOverwrite",
    "Esc": "singleSelection"
  };
  // Note that the save and find-related commands aren't defined by
  // default. User code or addons can define them. Unknown commands
  // are simply ignored.
  keyMap.pcDefault = {
    "Ctrl-A": "selectAll", "Ctrl-D": "deleteLine", "Ctrl-Z": "undo", "Shift-Ctrl-Z": "redo", "Ctrl-Y": "redo",
    "Ctrl-Home": "goDocStart", "Ctrl-End": "goDocEnd", "Ctrl-Up": "goLineUp", "Ctrl-Down": "goLineDown",
    "Ctrl-Left": "goGroupLeft", "Ctrl-Right": "goGroupRight", "Alt-Left": "goLineStart", "Alt-Right": "goLineEnd",
    "Ctrl-Backspace": "delGroupBefore", "Ctrl-Delete": "delGroupAfter", "Ctrl-S": "save", "Ctrl-F": "find",
    "Ctrl-G": "findNext", "Shift-Ctrl-G": "findPrev", "Shift-Ctrl-F": "replace", "Shift-Ctrl-R": "replaceAll",
    "Ctrl-[": "indentLess", "Ctrl-]": "indentMore",
    "Ctrl-U": "undoSelection", "Shift-Ctrl-U": "redoSelection", "Alt-U": "redoSelection",
    fallthrough: "basic"
  };
  // Very basic readline/emacs-style bindings, which are standard on Mac.
  keyMap.emacsy = {
    "Ctrl-F": "goCharRight", "Ctrl-B": "goCharLeft", "Ctrl-P": "goLineUp", "Ctrl-N": "goLineDown",
    "Alt-F": "goWordRight", "Alt-B": "goWordLeft", "Ctrl-A": "goLineStart", "Ctrl-E": "goLineEnd",
    "Ctrl-V": "goPageDown", "Shift-Ctrl-V": "goPageUp", "Ctrl-D": "delCharAfter", "Ctrl-H": "delCharBefore",
    "Alt-D": "delWordAfter", "Alt-Backspace": "delWordBefore", "Ctrl-K": "killLine", "Ctrl-T": "transposeChars"
  };
  keyMap.macDefault = {
    "Cmd-A": "selectAll", "Cmd-D": "deleteLine", "Cmd-Z": "undo", "Shift-Cmd-Z": "redo", "Cmd-Y": "redo",
    "Cmd-Home": "goDocStart", "Cmd-Up": "goDocStart", "Cmd-End": "goDocEnd", "Cmd-Down": "goDocEnd", "Alt-Left": "goGroupLeft",
    "Alt-Right": "goGroupRight", "Cmd-Left": "goLineLeft", "Cmd-Right": "goLineRight", "Alt-Backspace": "delGroupBefore",
    "Ctrl-Alt-Backspace": "delGroupAfter", "Alt-Delete": "delGroupAfter", "Cmd-S": "save", "Cmd-F": "find",
    "Cmd-G": "findNext", "Shift-Cmd-G": "findPrev", "Cmd-Alt-F": "replace", "Shift-Cmd-Alt-F": "replaceAll",
    "Cmd-[": "indentLess", "Cmd-]": "indentMore", "Cmd-Backspace": "delWrappedLineLeft", "Cmd-Delete": "delWrappedLineRight",
    "Cmd-U": "undoSelection", "Shift-Cmd-U": "redoSelection", "Ctrl-Up": "goDocStart", "Ctrl-Down": "goDocEnd",
    fallthrough: ["basic", "emacsy"]
  };
  keyMap["default"] = mac ? keyMap.macDefault : keyMap.pcDefault;

  // KEYMAP DISPATCH

  function normalizeKeyName(name) {
    var parts = name.split(/-(?!$)/), name = parts[parts.length - 1];
    var alt, ctrl, shift, cmd;
    for (var i = 0; i < parts.length - 1; i++) {
      var mod = parts[i];
      if (/^(cmd|meta|m)$/i.test(mod)) cmd = true;
      else if (/^a(lt)?$/i.test(mod)) alt = true;
      else if (/^(c|ctrl|control)$/i.test(mod)) ctrl = true;
      else if (/^s(hift)$/i.test(mod)) shift = true;
      else throw new Error("Unrecognized modifier name: " + mod);
    }
    if (alt) name = "Alt-" + name;
    if (ctrl) name = "Ctrl-" + name;
    if (cmd) name = "Cmd-" + name;
    if (shift) name = "Shift-" + name;
    return name;
  }

  // This is a kludge to keep keymaps mostly working as raw objects
  // (backwards compatibility) while at the same time support features
  // like normalization and multi-stroke key bindings. It compiles a
  // new normalized keymap, and then updates the old object to reflect
  // this.
  CodeMirror.normalizeKeyMap = function(keymap) {
    var copy = {};
    for (var keyname in keymap) if (keymap.hasOwnProperty(keyname)) {
      var value = keymap[keyname];
      if (/^(name|fallthrough|(de|at)tach)$/.test(keyname)) continue;
      if (value == "...") { delete keymap[keyname]; continue; }

      var keys = map(keyname.split(" "), normalizeKeyName);
      for (var i = 0; i < keys.length; i++) {
        var val, name;
        if (i == keys.length - 1) {
          name = keys.join(" ");
          val = value;
        } else {
          name = keys.slice(0, i + 1).join(" ");
          val = "...";
        }
        var prev = copy[name];
        if (!prev) copy[name] = val;
        else if (prev != val) throw new Error("Inconsistent bindings for " + name);
      }
      delete keymap[keyname];
    }
    for (var prop in copy) keymap[prop] = copy[prop];
    return keymap;
  };

  var lookupKey = CodeMirror.lookupKey = function(key, map, handle, context) {
    map = getKeyMap(map);
    var found = map.call ? map.call(key, context) : map[key];
    if (found === false) return "nothing";
    if (found === "...") return "multi";
    if (found != null && handle(found)) return "handled";

    if (map.fallthrough) {
      if (Object.prototype.toString.call(map.fallthrough) != "[object Array]")
        return lookupKey(key, map.fallthrough, handle, context);
      for (var i = 0; i < map.fallthrough.length; i++) {
        var result = lookupKey(key, map.fallthrough[i], handle, context);
        if (result) return result;
      }
    }
  };

  // Modifier key presses don't count as 'real' key presses for the
  // purpose of keymap fallthrough.
  var isModifierKey = CodeMirror.isModifierKey = function(value) {
    var name = typeof value == "string" ? value : keyNames[value.keyCode];
    return name == "Ctrl" || name == "Alt" || name == "Shift" || name == "Mod";
  };

  // Look up the name of a key as indicated by an event object.
  var keyName = CodeMirror.keyName = function(event, noShift) {
    if (presto && event.keyCode == 34 && event["char"]) return false;
    var base = keyNames[event.keyCode], name = base;
    if (name == null || event.altGraphKey) return false;
    if (event.altKey && base != "Alt") name = "Alt-" + name;
    if ((flipCtrlCmd ? event.metaKey : event.ctrlKey) && base != "Ctrl") name = "Ctrl-" + name;
    if ((flipCtrlCmd ? event.ctrlKey : event.metaKey) && base != "Cmd") name = "Cmd-" + name;
    if (!noShift && event.shiftKey && base != "Shift") name = "Shift-" + name;
    return name;
  };

  function getKeyMap(val) {
    return typeof val == "string" ? keyMap[val] : val;
  }

  // FROMTEXTAREA

  CodeMirror.fromTextArea = function(textarea, options) {
    options = options ? copyObj(options) : {};
    options.value = textarea.value;
    if (!options.tabindex && textarea.tabIndex)
      options.tabindex = textarea.tabIndex;
    if (!options.placeholder && textarea.placeholder)
      options.placeholder = textarea.placeholder;
    // Set autofocus to true if this textarea is focused, or if it has
    // autofocus and no other element is focused.
    if (options.autofocus == null) {
      var hasFocus = activeElt();
      options.autofocus = hasFocus == textarea ||
        textarea.getAttribute("autofocus") != null && hasFocus == document.body;
    }

    function save() {textarea.value = cm.getValue();}
    if (textarea.form) {
      on(textarea.form, "submit", save);
      // Deplorable hack to make the submit method do the right thing.
      if (!options.leaveSubmitMethodAlone) {
        var form = textarea.form, realSubmit = form.submit;
        try {
          var wrappedSubmit = form.submit = function() {
            save();
            form.submit = realSubmit;
            form.submit();
            form.submit = wrappedSubmit;
          };
        } catch(e) {}
      }
    }

    options.finishInit = function(cm) {
      cm.save = save;
      cm.getTextArea = function() { return textarea; };
      cm.toTextArea = function() {
        cm.toTextArea = isNaN; // Prevent this from being ran twice
        save();
        textarea.parentNode.removeChild(cm.getWrapperElement());
        textarea.style.display = "";
        if (textarea.form) {
          off(textarea.form, "submit", save);
          if (typeof textarea.form.submit == "function")
            textarea.form.submit = realSubmit;
        }
      };
    };

    textarea.style.display = "none";
    var cm = CodeMirror(function(node) {
      textarea.parentNode.insertBefore(node, textarea.nextSibling);
    }, options);
    return cm;
  };

  // STRING STREAM

  // Fed to the mode parsers, provides helper functions to make
  // parsers more succinct.

  var StringStream = CodeMirror.StringStream = function(string, tabSize) {
    this.pos = this.start = 0;
    this.string = string;
    this.tabSize = tabSize || 8;
    this.lastColumnPos = this.lastColumnValue = 0;
    this.lineStart = 0;
  };

  StringStream.prototype = {
    eol: function() {return this.pos >= this.string.length;},
    sol: function() {return this.pos == this.lineStart;},
    peek: function() {return this.string.charAt(this.pos) || undefined;},
    next: function() {
      if (this.pos < this.string.length)
        return this.string.charAt(this.pos++);
    },
    eat: function(match) {
      var ch = this.string.charAt(this.pos);
      if (typeof match == "string") var ok = ch == match;
      else var ok = ch && (match.test ? match.test(ch) : match(ch));
      if (ok) {++this.pos; return ch;}
    },
    eatWhile: function(match) {
      var start = this.pos;
      while (this.eat(match)){}
      return this.pos > start;
    },
    eatSpace: function() {
      var start = this.pos;
      while (/[\s\u00a0]/.test(this.string.charAt(this.pos))) ++this.pos;
      return this.pos > start;
    },
    skipToEnd: function() {this.pos = this.string.length;},
    skipTo: function(ch) {
      var found = this.string.indexOf(ch, this.pos);
      if (found > -1) {this.pos = found; return true;}
    },
    backUp: function(n) {this.pos -= n;},
    column: function() {
      if (this.lastColumnPos < this.start) {
        this.lastColumnValue = countColumn(this.string, this.start, this.tabSize, this.lastColumnPos, this.lastColumnValue);
        this.lastColumnPos = this.start;
      }
      return this.lastColumnValue - (this.lineStart ? countColumn(this.string, this.lineStart, this.tabSize) : 0);
    },
    indentation: function() {
      return countColumn(this.string, null, this.tabSize) -
        (this.lineStart ? countColumn(this.string, this.lineStart, this.tabSize) : 0);
    },
    match: function(pattern, consume, caseInsensitive) {
      if (typeof pattern == "string") {
        var cased = function(str) {return caseInsensitive ? str.toLowerCase() : str;};
        var substr = this.string.substr(this.pos, pattern.length);
        if (cased(substr) == cased(pattern)) {
          if (consume !== false) this.pos += pattern.length;
          return true;
        }
      } else {
        var match = this.string.slice(this.pos).match(pattern);
        if (match && match.index > 0) return null;
        if (match && consume !== false) this.pos += match[0].length;
        return match;
      }
    },
    current: function(){return this.string.slice(this.start, this.pos);},
    hideFirstChars: function(n, inner) {
      this.lineStart += n;
      try { return inner(); }
      finally { this.lineStart -= n; }
    }
  };

  // TEXTMARKERS

  // Created with markText and setBookmark methods. A TextMarker is a
  // handle that can be used to clear or find a marked position in the
  // document. Line objects hold arrays (markedSpans) containing
  // {from, to, marker} object pointing to such marker objects, and
  // indicating that such a marker is present on that line. Multiple
  // lines may point to the same marker when it spans across lines.
  // The spans will have null for their from/to properties when the
  // marker continues beyond the start/end of the line. Markers have
  // links back to the lines they currently touch.

  var nextMarkerId = 0;

  var TextMarker = CodeMirror.TextMarker = function(doc, type) {
    this.lines = [];
    this.type = type;
    this.doc = doc;
    this.id = ++nextMarkerId;
  };
  eventMixin(TextMarker);

  // Clear the marker.
  TextMarker.prototype.clear = function() {
    if (this.explicitlyCleared) return;
    var cm = this.doc.cm, withOp = cm && !cm.curOp;
    if (withOp) startOperation(cm);
    if (hasHandler(this, "clear")) {
      var found = this.find();
      if (found) signalLater(this, "clear", found.from, found.to);
    }
    var min = null, max = null;
    for (var i = 0; i < this.lines.length; ++i) {
      var line = this.lines[i];
      var span = getMarkedSpanFor(line.markedSpans, this);
      if (cm && !this.collapsed) regLineChange(cm, lineNo(line), "text");
      else if (cm) {
        if (span.to != null) max = lineNo(line);
        if (span.from != null) min = lineNo(line);
      }
      line.markedSpans = removeMarkedSpan(line.markedSpans, span);
      if (span.from == null && this.collapsed && !lineIsHidden(this.doc, line) && cm)
        updateLineHeight(line, textHeight(cm.display));
    }
    if (cm && this.collapsed && !cm.options.lineWrapping) for (var i = 0; i < this.lines.length; ++i) {
      var visual = visualLine(this.lines[i]), len = lineLength(visual);
      if (len > cm.display.maxLineLength) {
        cm.display.maxLine = visual;
        cm.display.maxLineLength = len;
        cm.display.maxLineChanged = true;
      }
    }

    if (min != null && cm && this.collapsed) regChange(cm, min, max + 1);
    this.lines.length = 0;
    this.explicitlyCleared = true;
    if (this.atomic && this.doc.cantEdit) {
      this.doc.cantEdit = false;
      if (cm) reCheckSelection(cm.doc);
    }
    if (cm) signalLater(cm, "markerCleared", cm, this);
    if (withOp) endOperation(cm);
    if (this.parent) this.parent.clear();
  };

  // Find the position of the marker in the document. Returns a {from,
  // to} object by default. Side can be passed to get a specific side
  // -- 0 (both), -1 (left), or 1 (right). When lineObj is true, the
  // Pos objects returned contain a line object, rather than a line
  // number (used to prevent looking up the same line twice).
  TextMarker.prototype.find = function(side, lineObj) {
    if (side == null && this.type == "bookmark") side = 1;
    var from, to;
    for (var i = 0; i < this.lines.length; ++i) {
      var line = this.lines[i];
      var span = getMarkedSpanFor(line.markedSpans, this);
      if (span.from != null) {
        from = Pos(lineObj ? line : lineNo(line), span.from);
        if (side == -1) return from;
      }
      if (span.to != null) {
        to = Pos(lineObj ? line : lineNo(line), span.to);
        if (side == 1) return to;
      }
    }
    return from && {from: from, to: to};
  };

  // Signals that the marker's widget changed, and surrounding layout
  // should be recomputed.
  TextMarker.prototype.changed = function() {
    var pos = this.find(-1, true), widget = this, cm = this.doc.cm;
    if (!pos || !cm) return;
    runInOp(cm, function() {
      var line = pos.line, lineN = lineNo(pos.line);
      var view = findViewForLine(cm, lineN);
      if (view) {
        clearLineMeasurementCacheFor(view);
        cm.curOp.selectionChanged = cm.curOp.forceUpdate = true;
      }
      cm.curOp.updateMaxLine = true;
      if (!lineIsHidden(widget.doc, line) && widget.height != null) {
        var oldHeight = widget.height;
        widget.height = null;
        var dHeight = widgetHeight(widget) - oldHeight;
        if (dHeight)
          updateLineHeight(line, line.height + dHeight);
      }
    });
  };

  TextMarker.prototype.attachLine = function(line) {
    if (!this.lines.length && this.doc.cm) {
      var op = this.doc.cm.curOp;
      if (!op.maybeHiddenMarkers || indexOf(op.maybeHiddenMarkers, this) == -1)
        (op.maybeUnhiddenMarkers || (op.maybeUnhiddenMarkers = [])).push(this);
    }
    this.lines.push(line);
  };
  TextMarker.prototype.detachLine = function(line) {
    this.lines.splice(indexOf(this.lines, line), 1);
    if (!this.lines.length && this.doc.cm) {
      var op = this.doc.cm.curOp;
      (op.maybeHiddenMarkers || (op.maybeHiddenMarkers = [])).push(this);
    }
  };

  // Collapsed markers have unique ids, in order to be able to order
  // them, which is needed for uniquely determining an outer marker
  // when they overlap (they may nest, but not partially overlap).
  var nextMarkerId = 0;

  // Create a marker, wire it up to the right lines, and
  function markText(doc, from, to, options, type) {
    // Shared markers (across linked documents) are handled separately
    // (markTextShared will call out to this again, once per
    // document).
    if (options && options.shared) return markTextShared(doc, from, to, options, type);
    // Ensure we are in an operation.
    if (doc.cm && !doc.cm.curOp) return operation(doc.cm, markText)(doc, from, to, options, type);

    var marker = new TextMarker(doc, type), diff = cmp(from, to);
    if (options) copyObj(options, marker, false);
    // Don't connect empty markers unless clearWhenEmpty is false
    if (diff > 0 || diff == 0 && marker.clearWhenEmpty !== false)
      return marker;
    if (marker.replacedWith) {
      // Showing up as a widget implies collapsed (widget replaces text)
      marker.collapsed = true;
      marker.widgetNode = elt("span", [marker.replacedWith], "CodeMirror-widget");
      if (!options.handleMouseEvents) marker.widgetNode.setAttribute("cm-ignore-events", "true");
      if (options.insertLeft) marker.widgetNode.insertLeft = true;
    }
    if (marker.collapsed) {
      if (conflictingCollapsedRange(doc, from.line, from, to, marker) ||
          from.line != to.line && conflictingCollapsedRange(doc, to.line, from, to, marker))
        throw new Error("Inserting collapsed marker partially overlapping an existing one");
      sawCollapsedSpans = true;
    }

    if (marker.addToHistory)
      addChangeToHistory(doc, {from: from, to: to, origin: "markText"}, doc.sel, NaN);

    var curLine = from.line, cm = doc.cm, updateMaxLine;
    doc.iter(curLine, to.line + 1, function(line) {
      if (cm && marker.collapsed && !cm.options.lineWrapping && visualLine(line) == cm.display.maxLine)
        updateMaxLine = true;
      if (marker.collapsed && curLine != from.line) updateLineHeight(line, 0);
      addMarkedSpan(line, new MarkedSpan(marker,
                                         curLine == from.line ? from.ch : null,
                                         curLine == to.line ? to.ch : null));
      ++curLine;
    });
    // lineIsHidden depends on the presence of the spans, so needs a second pass
    if (marker.collapsed) doc.iter(from.line, to.line + 1, function(line) {
      if (lineIsHidden(doc, line)) updateLineHeight(line, 0);
    });

    if (marker.clearOnEnter) on(marker, "beforeCursorEnter", function() { marker.clear(); });

    if (marker.readOnly) {
      sawReadOnlySpans = true;
      if (doc.history.done.length || doc.history.undone.length)
        doc.clearHistory();
    }
    if (marker.collapsed) {
      marker.id = ++nextMarkerId;
      marker.atomic = true;
    }
    if (cm) {
      // Sync editor state
      if (updateMaxLine) cm.curOp.updateMaxLine = true;
      if (marker.collapsed)
        regChange(cm, from.line, to.line + 1);
      else if (marker.className || marker.title || marker.startStyle || marker.endStyle || marker.css)
        for (var i = from.line; i <= to.line; i++) regLineChange(cm, i, "text");
      if (marker.atomic) reCheckSelection(cm.doc);
      signalLater(cm, "markerAdded", cm, marker);
    }
    return marker;
  }

  // SHARED TEXTMARKERS

  // A shared marker spans multiple linked documents. It is
  // implemented as a meta-marker-object controlling multiple normal
  // markers.
  var SharedTextMarker = CodeMirror.SharedTextMarker = function(markers, primary) {
    this.markers = markers;
    this.primary = primary;
    for (var i = 0; i < markers.length; ++i)
      markers[i].parent = this;
  };
  eventMixin(SharedTextMarker);

  SharedTextMarker.prototype.clear = function() {
    if (this.explicitlyCleared) return;
    this.explicitlyCleared = true;
    for (var i = 0; i < this.markers.length; ++i)
      this.markers[i].clear();
    signalLater(this, "clear");
  };
  SharedTextMarker.prototype.find = function(side, lineObj) {
    return this.primary.find(side, lineObj);
  };

  function markTextShared(doc, from, to, options, type) {
    options = copyObj(options);
    options.shared = false;
    var markers = [markText(doc, from, to, options, type)], primary = markers[0];
    var widget = options.widgetNode;
    linkedDocs(doc, function(doc) {
      if (widget) options.widgetNode = widget.cloneNode(true);
      markers.push(markText(doc, clipPos(doc, from), clipPos(doc, to), options, type));
      for (var i = 0; i < doc.linked.length; ++i)
        if (doc.linked[i].isParent) return;
      primary = lst(markers);
    });
    return new SharedTextMarker(markers, primary);
  }

  function findSharedMarkers(doc) {
    return doc.findMarks(Pos(doc.first, 0), doc.clipPos(Pos(doc.lastLine())),
                         function(m) { return m.parent; });
  }

  function copySharedMarkers(doc, markers) {
    for (var i = 0; i < markers.length; i++) {
      var marker = markers[i], pos = marker.find();
      var mFrom = doc.clipPos(pos.from), mTo = doc.clipPos(pos.to);
      if (cmp(mFrom, mTo)) {
        var subMark = markText(doc, mFrom, mTo, marker.primary, marker.primary.type);
        marker.markers.push(subMark);
        subMark.parent = marker;
      }
    }
  }

  function detachSharedMarkers(markers) {
    for (var i = 0; i < markers.length; i++) {
      var marker = markers[i], linked = [marker.primary.doc];;
      linkedDocs(marker.primary.doc, function(d) { linked.push(d); });
      for (var j = 0; j < marker.markers.length; j++) {
        var subMarker = marker.markers[j];
        if (indexOf(linked, subMarker.doc) == -1) {
          subMarker.parent = null;
          marker.markers.splice(j--, 1);
        }
      }
    }
  }

  // TEXTMARKER SPANS

  function MarkedSpan(marker, from, to) {
    this.marker = marker;
    this.from = from; this.to = to;
  }

  // Search an array of spans for a span matching the given marker.
  function getMarkedSpanFor(spans, marker) {
    if (spans) for (var i = 0; i < spans.length; ++i) {
      var span = spans[i];
      if (span.marker == marker) return span;
    }
  }
  // Remove a span from an array, returning undefined if no spans are
  // left (we don't store arrays for lines without spans).
  function removeMarkedSpan(spans, span) {
    for (var r, i = 0; i < spans.length; ++i)
      if (spans[i] != span) (r || (r = [])).push(spans[i]);
    return r;
  }
  // Add a span to a line.
  function addMarkedSpan(line, span) {
    line.markedSpans = line.markedSpans ? line.markedSpans.concat([span]) : [span];
    span.marker.attachLine(line);
  }

  // Used for the algorithm that adjusts markers for a change in the
  // document. These functions cut an array of spans at a given
  // character position, returning an array of remaining chunks (or
  // undefined if nothing remains).
  function markedSpansBefore(old, startCh, isInsert) {
    if (old) for (var i = 0, nw; i < old.length; ++i) {
      var span = old[i], marker = span.marker;
      var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= startCh : span.from < startCh);
      if (startsBefore || span.from == startCh && marker.type == "bookmark" && (!isInsert || !span.marker.insertLeft)) {
        var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= startCh : span.to > startCh);
        (nw || (nw = [])).push(new MarkedSpan(marker, span.from, endsAfter ? null : span.to));
      }
    }
    return nw;
  }
  function markedSpansAfter(old, endCh, isInsert) {
    if (old) for (var i = 0, nw; i < old.length; ++i) {
      var span = old[i], marker = span.marker;
      var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= endCh : span.to > endCh);
      if (endsAfter || span.from == endCh && marker.type == "bookmark" && (!isInsert || span.marker.insertLeft)) {
        var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= endCh : span.from < endCh);
        (nw || (nw = [])).push(new MarkedSpan(marker, startsBefore ? null : span.from - endCh,
                                              span.to == null ? null : span.to - endCh));
      }
    }
    return nw;
  }

  // Given a change object, compute the new set of marker spans that
  // cover the line in which the change took place. Removes spans
  // entirely within the change, reconnects spans belonging to the
  // same marker that appear on both sides of the change, and cuts off
  // spans partially within the change. Returns an array of span
  // arrays with one element for each line in (after) the change.
  function stretchSpansOverChange(doc, change) {
    if (change.full) return null;
    var oldFirst = isLine(doc, change.from.line) && getLine(doc, change.from.line).markedSpans;
    var oldLast = isLine(doc, change.to.line) && getLine(doc, change.to.line).markedSpans;
    if (!oldFirst && !oldLast) return null;

    var startCh = change.from.ch, endCh = change.to.ch, isInsert = cmp(change.from, change.to) == 0;
    // Get the spans that 'stick out' on both sides
    var first = markedSpansBefore(oldFirst, startCh, isInsert);
    var last = markedSpansAfter(oldLast, endCh, isInsert);

    // Next, merge those two ends
    var sameLine = change.text.length == 1, offset = lst(change.text).length + (sameLine ? startCh : 0);
    if (first) {
      // Fix up .to properties of first
      for (var i = 0; i < first.length; ++i) {
        var span = first[i];
        if (span.to == null) {
          var found = getMarkedSpanFor(last, span.marker);
          if (!found) span.to = startCh;
          else if (sameLine) span.to = found.to == null ? null : found.to + offset;
        }
      }
    }
    if (last) {
      // Fix up .from in last (or move them into first in case of sameLine)
      for (var i = 0; i < last.length; ++i) {
        var span = last[i];
        if (span.to != null) span.to += offset;
        if (span.from == null) {
          var found = getMarkedSpanFor(first, span.marker);
          if (!found) {
            span.from = offset;
            if (sameLine) (first || (first = [])).push(span);
          }
        } else {
          span.from += offset;
          if (sameLine) (first || (first = [])).push(span);
        }
      }
    }
    // Make sure we didn't create any zero-length spans
    if (first) first = clearEmptySpans(first);
    if (last && last != first) last = clearEmptySpans(last);

    var newMarkers = [first];
    if (!sameLine) {
      // Fill gap with whole-line-spans
      var gap = change.text.length - 2, gapMarkers;
      if (gap > 0 && first)
        for (var i = 0; i < first.length; ++i)
          if (first[i].to == null)
            (gapMarkers || (gapMarkers = [])).push(new MarkedSpan(first[i].marker, null, null));
      for (var i = 0; i < gap; ++i)
        newMarkers.push(gapMarkers);
      newMarkers.push(last);
    }
    return newMarkers;
  }

  // Remove spans that are empty and don't have a clearWhenEmpty
  // option of false.
  function clearEmptySpans(spans) {
    for (var i = 0; i < spans.length; ++i) {
      var span = spans[i];
      if (span.from != null && span.from == span.to && span.marker.clearWhenEmpty !== false)
        spans.splice(i--, 1);
    }
    if (!spans.length) return null;
    return spans;
  }

  // Used for un/re-doing changes from the history. Combines the
  // result of computing the existing spans with the set of spans that
  // existed in the history (so that deleting around a span and then
  // undoing brings back the span).
  function mergeOldSpans(doc, change) {
    var old = getOldSpans(doc, change);
    var stretched = stretchSpansOverChange(doc, change);
    if (!old) return stretched;
    if (!stretched) return old;

    for (var i = 0; i < old.length; ++i) {
      var oldCur = old[i], stretchCur = stretched[i];
      if (oldCur && stretchCur) {
        spans: for (var j = 0; j < stretchCur.length; ++j) {
          var span = stretchCur[j];
          for (var k = 0; k < oldCur.length; ++k)
            if (oldCur[k].marker == span.marker) continue spans;
          oldCur.push(span);
        }
      } else if (stretchCur) {
        old[i] = stretchCur;
      }
    }
    return old;
  }

  // Used to 'clip' out readOnly ranges when making a change.
  function removeReadOnlyRanges(doc, from, to) {
    var markers = null;
    doc.iter(from.line, to.line + 1, function(line) {
      if (line.markedSpans) for (var i = 0; i < line.markedSpans.length; ++i) {
        var mark = line.markedSpans[i].marker;
        if (mark.readOnly && (!markers || indexOf(markers, mark) == -1))
          (markers || (markers = [])).push(mark);
      }
    });
    if (!markers) return null;
    var parts = [{from: from, to: to}];
    for (var i = 0; i < markers.length; ++i) {
      var mk = markers[i], m = mk.find(0);
      for (var j = 0; j < parts.length; ++j) {
        var p = parts[j];
        if (cmp(p.to, m.from) < 0 || cmp(p.from, m.to) > 0) continue;
        var newParts = [j, 1], dfrom = cmp(p.from, m.from), dto = cmp(p.to, m.to);
        if (dfrom < 0 || !mk.inclusiveLeft && !dfrom)
          newParts.push({from: p.from, to: m.from});
        if (dto > 0 || !mk.inclusiveRight && !dto)
          newParts.push({from: m.to, to: p.to});
        parts.splice.apply(parts, newParts);
        j += newParts.length - 1;
      }
    }
    return parts;
  }

  // Connect or disconnect spans from a line.
  function detachMarkedSpans(line) {
    var spans = line.markedSpans;
    if (!spans) return;
    for (var i = 0; i < spans.length; ++i)
      spans[i].marker.detachLine(line);
    line.markedSpans = null;
  }
  function attachMarkedSpans(line, spans) {
    if (!spans) return;
    for (var i = 0; i < spans.length; ++i)
      spans[i].marker.attachLine(line);
    line.markedSpans = spans;
  }

  // Helpers used when computing which overlapping collapsed span
  // counts as the larger one.
  function extraLeft(marker) { return marker.inclusiveLeft ? -1 : 0; }
  function extraRight(marker) { return marker.inclusiveRight ? 1 : 0; }

  // Returns a number indicating which of two overlapping collapsed
  // spans is larger (and thus includes the other). Falls back to
  // comparing ids when the spans cover exactly the same range.
  function compareCollapsedMarkers(a, b) {
    var lenDiff = a.lines.length - b.lines.length;
    if (lenDiff != 0) return lenDiff;
    var aPos = a.find(), bPos = b.find();
    var fromCmp = cmp(aPos.from, bPos.from) || extraLeft(a) - extraLeft(b);
    if (fromCmp) return -fromCmp;
    var toCmp = cmp(aPos.to, bPos.to) || extraRight(a) - extraRight(b);
    if (toCmp) return toCmp;
    return b.id - a.id;
  }

  // Find out whether a line ends or starts in a collapsed span. If
  // so, return the marker for that span.
  function collapsedSpanAtSide(line, start) {
    var sps = sawCollapsedSpans && line.markedSpans, found;
    if (sps) for (var sp, i = 0; i < sps.length; ++i) {
      sp = sps[i];
      if (sp.marker.collapsed && (start ? sp.from : sp.to) == null &&
          (!found || compareCollapsedMarkers(found, sp.marker) < 0))
        found = sp.marker;
    }
    return found;
  }
  function collapsedSpanAtStart(line) { return collapsedSpanAtSide(line, true); }
  function collapsedSpanAtEnd(line) { return collapsedSpanAtSide(line, false); }

  // Test whether there exists a collapsed span that partially
  // overlaps (covers the start or end, but not both) of a new span.
  // Such overlap is not allowed.
  function conflictingCollapsedRange(doc, lineNo, from, to, marker) {
    var line = getLine(doc, lineNo);
    var sps = sawCollapsedSpans && line.markedSpans;
    if (sps) for (var i = 0; i < sps.length; ++i) {
      var sp = sps[i];
      if (!sp.marker.collapsed) continue;
      var found = sp.marker.find(0);
      var fromCmp = cmp(found.from, from) || extraLeft(sp.marker) - extraLeft(marker);
      var toCmp = cmp(found.to, to) || extraRight(sp.marker) - extraRight(marker);
      if (fromCmp >= 0 && toCmp <= 0 || fromCmp <= 0 && toCmp >= 0) continue;
      if (fromCmp <= 0 && (cmp(found.to, from) > 0 || (sp.marker.inclusiveRight && marker.inclusiveLeft)) ||
          fromCmp >= 0 && (cmp(found.from, to) < 0 || (sp.marker.inclusiveLeft && marker.inclusiveRight)))
        return true;
    }
  }

  // A visual line is a line as drawn on the screen. Folding, for
  // example, can cause multiple logical lines to appear on the same
  // visual line. This finds the start of the visual line that the
  // given line is part of (usually that is the line itself).
  function visualLine(line) {
    var merged;
    while (merged = collapsedSpanAtStart(line))
      line = merged.find(-1, true).line;
    return line;
  }

  // Returns an array of logical lines that continue the visual line
  // started by the argument, or undefined if there are no such lines.
  function visualLineContinued(line) {
    var merged, lines;
    while (merged = collapsedSpanAtEnd(line)) {
      line = merged.find(1, true).line;
      (lines || (lines = [])).push(line);
    }
    return lines;
  }

  // Get the line number of the start of the visual line that the
  // given line number is part of.
  function visualLineNo(doc, lineN) {
    var line = getLine(doc, lineN), vis = visualLine(line);
    if (line == vis) return lineN;
    return lineNo(vis);
  }
  // Get the line number of the start of the next visual line after
  // the given line.
  function visualLineEndNo(doc, lineN) {
    if (lineN > doc.lastLine()) return lineN;
    var line = getLine(doc, lineN), merged;
    if (!lineIsHidden(doc, line)) return lineN;
    while (merged = collapsedSpanAtEnd(line))
      line = merged.find(1, true).line;
    return lineNo(line) + 1;
  }

  // Compute whether a line is hidden. Lines count as hidden when they
  // are part of a visual line that starts with another line, or when
  // they are entirely covered by collapsed, non-widget span.
  function lineIsHidden(doc, line) {
    var sps = sawCollapsedSpans && line.markedSpans;
    if (sps) for (var sp, i = 0; i < sps.length; ++i) {
      sp = sps[i];
      if (!sp.marker.collapsed) continue;
      if (sp.from == null) return true;
      if (sp.marker.widgetNode) continue;
      if (sp.from == 0 && sp.marker.inclusiveLeft && lineIsHiddenInner(doc, line, sp))
        return true;
    }
  }
  function lineIsHiddenInner(doc, line, span) {
    if (span.to == null) {
      var end = span.marker.find(1, true);
      return lineIsHiddenInner(doc, end.line, getMarkedSpanFor(end.line.markedSpans, span.marker));
    }
    if (span.marker.inclusiveRight && span.to == line.text.length)
      return true;
    for (var sp, i = 0; i < line.markedSpans.length; ++i) {
      sp = line.markedSpans[i];
      if (sp.marker.collapsed && !sp.marker.widgetNode && sp.from == span.to &&
          (sp.to == null || sp.to != span.from) &&
          (sp.marker.inclusiveLeft || span.marker.inclusiveRight) &&
          lineIsHiddenInner(doc, line, sp)) return true;
    }
  }

  // LINE WIDGETS

  // Line widgets are block elements displayed above or below a line.

  var LineWidget = CodeMirror.LineWidget = function(doc, node, options) {
    if (options) for (var opt in options) if (options.hasOwnProperty(opt))
      this[opt] = options[opt];
    this.doc = doc;
    this.node = node;
  };
  eventMixin(LineWidget);

  function adjustScrollWhenAboveVisible(cm, line, diff) {
    if (heightAtLine(line) < ((cm.curOp && cm.curOp.scrollTop) || cm.doc.scrollTop))
      addToScrollPos(cm, null, diff);
  }

  LineWidget.prototype.clear = function() {
    var cm = this.doc.cm, ws = this.line.widgets, line = this.line, no = lineNo(line);
    if (no == null || !ws) return;
    for (var i = 0; i < ws.length; ++i) if (ws[i] == this) ws.splice(i--, 1);
    if (!ws.length) line.widgets = null;
    var height = widgetHeight(this);
    updateLineHeight(line, Math.max(0, line.height - height));
    if (cm) runInOp(cm, function() {
      adjustScrollWhenAboveVisible(cm, line, -height);
      regLineChange(cm, no, "widget");
    });
  };
  LineWidget.prototype.changed = function() {
    var oldH = this.height, cm = this.doc.cm, line = this.line;
    this.height = null;
    var diff = widgetHeight(this) - oldH;
    if (!diff) return;
    updateLineHeight(line, line.height + diff);
    if (cm) runInOp(cm, function() {
      cm.curOp.forceUpdate = true;
      adjustScrollWhenAboveVisible(cm, line, diff);
    });
  };

  function widgetHeight(widget) {
    if (widget.height != null) return widget.height;
    var cm = widget.doc.cm;
    if (!cm) return 0;
    if (!contains(document.body, widget.node)) {
      var parentStyle = "position: relative;";
      if (widget.coverGutter)
        parentStyle += "margin-left: -" + cm.display.gutters.offsetWidth + "px;";
      if (widget.noHScroll)
        parentStyle += "width: " + cm.display.wrapper.clientWidth + "px;";
      removeChildrenAndAdd(cm.display.measure, elt("div", [widget.node], null, parentStyle));
    }
    return widget.height = widget.node.offsetHeight;
  }

  function addLineWidget(doc, handle, node, options) {
    var widget = new LineWidget(doc, node, options);
    var cm = doc.cm;
    if (cm && widget.noHScroll) cm.display.alignWidgets = true;
    changeLine(doc, handle, "widget", function(line) {
      var widgets = line.widgets || (line.widgets = []);
      if (widget.insertAt == null) widgets.push(widget);
      else widgets.splice(Math.min(widgets.length - 1, Math.max(0, widget.insertAt)), 0, widget);
      widget.line = line;
      if (cm && !lineIsHidden(doc, line)) {
        var aboveVisible = heightAtLine(line) < doc.scrollTop;
        updateLineHeight(line, line.height + widgetHeight(widget));
        if (aboveVisible) addToScrollPos(cm, null, widget.height);
        cm.curOp.forceUpdate = true;
      }
      return true;
    });
    return widget;
  }

  // LINE DATA STRUCTURE

  // Line objects. These hold state related to a line, including
  // highlighting info (the styles array).
  var Line = CodeMirror.Line = function(text, markedSpans, estimateHeight) {
    this.text = text;
    attachMarkedSpans(this, markedSpans);
    this.height = estimateHeight ? estimateHeight(this) : 1;
  };
  eventMixin(Line);
  Line.prototype.lineNo = function() { return lineNo(this); };

  // Change the content (text, markers) of a line. Automatically
  // invalidates cached information and tries to re-estimate the
  // line's height.
  function updateLine(line, text, markedSpans, estimateHeight) {
    line.text = text;
    if (line.stateAfter) line.stateAfter = null;
    if (line.styles) line.styles = null;
    if (line.order != null) line.order = null;
    detachMarkedSpans(line);
    attachMarkedSpans(line, markedSpans);
    var estHeight = estimateHeight ? estimateHeight(line) : 1;
    if (estHeight != line.height) updateLineHeight(line, estHeight);
  }

  // Detach a line from the document tree and its markers.
  function cleanUpLine(line) {
    line.parent = null;
    detachMarkedSpans(line);
  }

  function extractLineClasses(type, output) {
    if (type) for (;;) {
      var lineClass = type.match(/(?:^|\s+)line-(background-)?(\S+)/);
      if (!lineClass) break;
      type = type.slice(0, lineClass.index) + type.slice(lineClass.index + lineClass[0].length);
      var prop = lineClass[1] ? "bgClass" : "textClass";
      if (output[prop] == null)
        output[prop] = lineClass[2];
      else if (!(new RegExp("(?:^|\s)" + lineClass[2] + "(?:$|\s)")).test(output[prop]))
        output[prop] += " " + lineClass[2];
    }
    return type;
  }

  function callBlankLine(mode, state) {
    if (mode.blankLine) return mode.blankLine(state);
    if (!mode.innerMode) return;
    var inner = CodeMirror.innerMode(mode, state);
    if (inner.mode.blankLine) return inner.mode.blankLine(inner.state);
  }

  function readToken(mode, stream, state, inner) {
    for (var i = 0; i < 10; i++) {
      if (inner) inner[0] = CodeMirror.innerMode(mode, state).mode;
      var style = mode.token(stream, state);
      if (stream.pos > stream.start) return style;
    }
    throw new Error("Mode " + mode.name + " failed to advance stream.");
  }

  // Utility for getTokenAt and getLineTokens
  function takeToken(cm, pos, precise, asArray) {
    function getObj(copy) {
      return {start: stream.start, end: stream.pos,
              string: stream.current(),
              type: style || null,
              state: copy ? copyState(doc.mode, state) : state};
    }

    var doc = cm.doc, mode = doc.mode, style;
    pos = clipPos(doc, pos);
    var line = getLine(doc, pos.line), state = getStateBefore(cm, pos.line, precise);
    var stream = new StringStream(line.text, cm.options.tabSize), tokens;
    if (asArray) tokens = [];
    while ((asArray || stream.pos < pos.ch) && !stream.eol()) {
      stream.start = stream.pos;
      style = readToken(mode, stream, state);
      if (asArray) tokens.push(getObj(true));
    }
    return asArray ? tokens : getObj();
  }

  // Run the given mode's parser over a line, calling f for each token.
  function runMode(cm, text, mode, state, f, lineClasses, forceToEnd) {
    var flattenSpans = mode.flattenSpans;
    if (flattenSpans == null) flattenSpans = cm.options.flattenSpans;
    var curStart = 0, curStyle = null;
    var stream = new StringStream(text, cm.options.tabSize), style;
    var inner = cm.options.addModeClass && [null];
    if (text == "") extractLineClasses(callBlankLine(mode, state), lineClasses);
    while (!stream.eol()) {
      if (stream.pos > cm.options.maxHighlightLength) {
        flattenSpans = false;
        if (forceToEnd) processLine(cm, text, state, stream.pos);
        stream.pos = text.length;
        style = null;
      } else {
        style = extractLineClasses(readToken(mode, stream, state, inner), lineClasses);
      }
      if (inner) {
        var mName = inner[0].name;
        if (mName) style = "m-" + (style ? mName + " " + style : mName);
      }
      if (!flattenSpans || curStyle != style) {
        while (curStart < stream.start) {
          curStart = Math.min(stream.start, curStart + 50000);
          f(curStart, curStyle);
        }
        curStyle = style;
      }
      stream.start = stream.pos;
    }
    while (curStart < stream.pos) {
      // Webkit seems to refuse to render text nodes longer than 57444 characters
      var pos = Math.min(stream.pos, curStart + 50000);
      f(pos, curStyle);
      curStart = pos;
    }
  }

  // Compute a style array (an array starting with a mode generation
  // -- for invalidation -- followed by pairs of end positions and
  // style strings), which is used to highlight the tokens on the
  // line.
  function highlightLine(cm, line, state, forceToEnd) {
    // A styles array always starts with a number identifying the
    // mode/overlays that it is based on (for easy invalidation).
    var st = [cm.state.modeGen], lineClasses = {};
    // Compute the base array of styles
    runMode(cm, line.text, cm.doc.mode, state, function(end, style) {
      st.push(end, style);
    }, lineClasses, forceToEnd);

    // Run overlays, adjust style array.
    for (var o = 0; o < cm.state.overlays.length; ++o) {
      var overlay = cm.state.overlays[o], i = 1, at = 0;
      runMode(cm, line.text, overlay.mode, true, function(end, style) {
        var start = i;
        // Ensure there's a token end at the current position, and that i points at it
        while (at < end) {
          var i_end = st[i];
          if (i_end > end)
            st.splice(i, 1, end, st[i+1], i_end);
          i += 2;
          at = Math.min(end, i_end);
        }
        if (!style) return;
        if (overlay.opaque) {
          st.splice(start, i - start, end, "cm-overlay " + style);
          i = start + 2;
        } else {
          for (; start < i; start += 2) {
            var cur = st[start+1];
            st[start+1] = (cur ? cur + " " : "") + "cm-overlay " + style;
          }
        }
      }, lineClasses);
    }

    return {styles: st, classes: lineClasses.bgClass || lineClasses.textClass ? lineClasses : null};
  }

  function getLineStyles(cm, line, updateFrontier) {
    if (!line.styles || line.styles[0] != cm.state.modeGen) {
      var result = highlightLine(cm, line, line.stateAfter = getStateBefore(cm, lineNo(line)));
      line.styles = result.styles;
      if (result.classes) line.styleClasses = result.classes;
      else if (line.styleClasses) line.styleClasses = null;
      if (updateFrontier === cm.doc.frontier) cm.doc.frontier++;
    }
    return line.styles;
  }

  // Lightweight form of highlight -- proceed over this line and
  // update state, but don't save a style array. Used for lines that
  // aren't currently visible.
  function processLine(cm, text, state, startAt) {
    var mode = cm.doc.mode;
    var stream = new StringStream(text, cm.options.tabSize);
    stream.start = stream.pos = startAt || 0;
    if (text == "") callBlankLine(mode, state);
    while (!stream.eol() && stream.pos <= cm.options.maxHighlightLength) {
      readToken(mode, stream, state);
      stream.start = stream.pos;
    }
  }

  // Convert a style as returned by a mode (either null, or a string
  // containing one or more styles) to a CSS style. This is cached,
  // and also looks for line-wide styles.
  var styleToClassCache = {}, styleToClassCacheWithMode = {};
  function interpretTokenStyle(style, options) {
    if (!style || /^\s*$/.test(style)) return null;
    var cache = options.addModeClass ? styleToClassCacheWithMode : styleToClassCache;
    return cache[style] ||
      (cache[style] = style.replace(/\S+/g, "cm-$&"));
  }

  // Render the DOM representation of the text of a line. Also builds
  // up a 'line map', which points at the DOM nodes that represent
  // specific stretches of text, and is used by the measuring code.
  // The returned object contains the DOM node, this map, and
  // information about line-wide styles that were set by the mode.
  function buildLineContent(cm, lineView) {
    // The padding-right forces the element to have a 'border', which
    // is needed on Webkit to be able to get line-level bounding
    // rectangles for it (in measureChar).
    var content = elt("span", null, null, webkit ? "padding-right: .1px" : null);
    var builder = {pre: elt("pre", [content], "CodeMirror-line"), content: content,
                   col: 0, pos: 0, cm: cm,
                   splitSpaces: (ie || webkit) && cm.getOption("lineWrapping")};
    lineView.measure = {};

    // Iterate over the logical lines that make up this visual line.
    for (var i = 0; i <= (lineView.rest ? lineView.rest.length : 0); i++) {
      var line = i ? lineView.rest[i - 1] : lineView.line, order;
      builder.pos = 0;
      builder.addToken = buildToken;
      // Optionally wire in some hacks into the token-rendering
      // algorithm, to deal with browser quirks.
      if (hasBadBidiRects(cm.display.measure) && (order = getOrder(line)))
        builder.addToken = buildTokenBadBidi(builder.addToken, order);
      builder.map = [];
      var allowFrontierUpdate = lineView != cm.display.externalMeasured && lineNo(line);
      insertLineContent(line, builder, getLineStyles(cm, line, allowFrontierUpdate));
      if (line.styleClasses) {
        if (line.styleClasses.bgClass)
          builder.bgClass = joinClasses(line.styleClasses.bgClass, builder.bgClass || "");
        if (line.styleClasses.textClass)
          builder.textClass = joinClasses(line.styleClasses.textClass, builder.textClass || "");
      }

      // Ensure at least a single node is present, for measuring.
      if (builder.map.length == 0)
        builder.map.push(0, 0, builder.content.appendChild(zeroWidthElement(cm.display.measure)));

      // Store the map and a cache object for the current logical line
      if (i == 0) {
        lineView.measure.map = builder.map;
        lineView.measure.cache = {};
      } else {
        (lineView.measure.maps || (lineView.measure.maps = [])).push(builder.map);
        (lineView.measure.caches || (lineView.measure.caches = [])).push({});
      }
    }

    // See issue #2901
    if (webkit && /\bcm-tab\b/.test(builder.content.lastChild.className))
      builder.content.className = "cm-tab-wrap-hack";

    signal(cm, "renderLine", cm, lineView.line, builder.pre);
    if (builder.pre.className)
      builder.textClass = joinClasses(builder.pre.className, builder.textClass || "");

    return builder;
  }

  function defaultSpecialCharPlaceholder(ch) {
    var token = elt("span", "\u2022", "cm-invalidchar");
    token.title = "\\u" + ch.charCodeAt(0).toString(16);
    token.setAttribute("aria-label", token.title);
    return token;
  }

  // Build up the DOM representation for a single token, and add it to
  // the line map. Takes care to render special characters separately.
  function buildToken(builder, text, style, startStyle, endStyle, title, css) {
    if (!text) return;
    var displayText = builder.splitSpaces ? text.replace(/ {3,}/g, splitSpaces) : text;
    var special = builder.cm.state.specialChars, mustWrap = false;
    if (!special.test(text)) {
      builder.col += text.length;
      var content = document.createTextNode(displayText);
      builder.map.push(builder.pos, builder.pos + text.length, content);
      if (ie && ie_version < 9) mustWrap = true;
      builder.pos += text.length;
    } else {
      var content = document.createDocumentFragment(), pos = 0;
      while (true) {
        special.lastIndex = pos;
        var m = special.exec(text);
        var skipped = m ? m.index - pos : text.length - pos;
        if (skipped) {
          var txt = document.createTextNode(displayText.slice(pos, pos + skipped));
          if (ie && ie_version < 9) content.appendChild(elt("span", [txt]));
          else content.appendChild(txt);
          builder.map.push(builder.pos, builder.pos + skipped, txt);
          builder.col += skipped;
          builder.pos += skipped;
        }
        if (!m) break;
        pos += skipped + 1;
        if (m[0] == "\t") {
          var tabSize = builder.cm.options.tabSize, tabWidth = tabSize - builder.col % tabSize;
          var txt = content.appendChild(elt("span", spaceStr(tabWidth), "cm-tab"));
          txt.setAttribute("role", "presentation");
          txt.setAttribute("cm-text", "\t");
          builder.col += tabWidth;
        } else {
          var txt = builder.cm.options.specialCharPlaceholder(m[0]);
          txt.setAttribute("cm-text", m[0]);
          if (ie && ie_version < 9) content.appendChild(elt("span", [txt]));
          else content.appendChild(txt);
          builder.col += 1;
        }
        builder.map.push(builder.pos, builder.pos + 1, txt);
        builder.pos++;
      }
    }
    if (style || startStyle || endStyle || mustWrap || css) {
      var fullStyle = style || "";
      if (startStyle) fullStyle += startStyle;
      if (endStyle) fullStyle += endStyle;
      var token = elt("span", [content], fullStyle, css);
      if (title) token.title = title;
      return builder.content.appendChild(token);
    }
    builder.content.appendChild(content);
  }

  function splitSpaces(old) {
    var out = " ";
    for (var i = 0; i < old.length - 2; ++i) out += i % 2 ? " " : "\u00a0";
    out += " ";
    return out;
  }

  // Work around nonsense dimensions being reported for stretches of
  // right-to-left text.
  function buildTokenBadBidi(inner, order) {
    return function(builder, text, style, startStyle, endStyle, title, css) {
      style = style ? style + " cm-force-border" : "cm-force-border";
      var start = builder.pos, end = start + text.length;
      for (;;) {
        // Find the part that overlaps with the start of this text
        for (var i = 0; i < order.length; i++) {
          var part = order[i];
          if (part.to > start && part.from <= start) break;
        }
        if (part.to >= end) return inner(builder, text, style, startStyle, endStyle, title, css);
        inner(builder, text.slice(0, part.to - start), style, startStyle, null, title, css);
        startStyle = null;
        text = text.slice(part.to - start);
        start = part.to;
      }
    };
  }

  function buildCollapsedSpan(builder, size, marker, ignoreWidget) {
    var widget = !ignoreWidget && marker.widgetNode;
    if (widget) builder.map.push(builder.pos, builder.pos + size, widget);
    if (!ignoreWidget && builder.cm.display.input.needsContentAttribute) {
      if (!widget)
        widget = builder.content.appendChild(document.createElement("span"));
      widget.setAttribute("cm-marker", marker.id);
    }
    if (widget) {
      builder.cm.display.input.setUneditable(widget);
      builder.content.appendChild(widget);
    }
    builder.pos += size;
  }

  // Outputs a number of spans to make up a line, taking highlighting
  // and marked text into account.
  function insertLineContent(line, builder, styles) {
    var spans = line.markedSpans, allText = line.text, at = 0;
    if (!spans) {
      for (var i = 1; i < styles.length; i+=2)
        builder.addToken(builder, allText.slice(at, at = styles[i]), interpretTokenStyle(styles[i+1], builder.cm.options));
      return;
    }

    var len = allText.length, pos = 0, i = 1, text = "", style, css;
    var nextChange = 0, spanStyle, spanEndStyle, spanStartStyle, title, collapsed;
    for (;;) {
      if (nextChange == pos) { // Update current marker set
        spanStyle = spanEndStyle = spanStartStyle = title = css = "";
        collapsed = null; nextChange = Infinity;
        var foundBookmarks = [];
        for (var j = 0; j < spans.length; ++j) {
          var sp = spans[j], m = sp.marker;
          if (m.type == "bookmark" && sp.from == pos && m.widgetNode) {
            foundBookmarks.push(m);
          } else if (sp.from <= pos && (sp.to == null || sp.to > pos || m.collapsed && sp.to == pos && sp.from == pos)) {
            if (sp.to != null && sp.to != pos && nextChange > sp.to) {
              nextChange = sp.to;
              spanEndStyle = "";
            }
            if (m.className) spanStyle += " " + m.className;
            if (m.css) css = m.css;
            if (m.startStyle && sp.from == pos) spanStartStyle += " " + m.startStyle;
            if (m.endStyle && sp.to == nextChange) spanEndStyle += " " + m.endStyle;
            if (m.title && !title) title = m.title;
            if (m.collapsed && (!collapsed || compareCollapsedMarkers(collapsed.marker, m) < 0))
              collapsed = sp;
          } else if (sp.from > pos && nextChange > sp.from) {
            nextChange = sp.from;
          }
        }
        if (collapsed && (collapsed.from || 0) == pos) {
          buildCollapsedSpan(builder, (collapsed.to == null ? len + 1 : collapsed.to) - pos,
                             collapsed.marker, collapsed.from == null);
          if (collapsed.to == null) return;
          if (collapsed.to == pos) collapsed = false;
        }
        if (!collapsed && foundBookmarks.length) for (var j = 0; j < foundBookmarks.length; ++j)
          buildCollapsedSpan(builder, 0, foundBookmarks[j]);
      }
      if (pos >= len) break;

      var upto = Math.min(len, nextChange);
      while (true) {
        if (text) {
          var end = pos + text.length;
          if (!collapsed) {
            var tokenText = end > upto ? text.slice(0, upto - pos) : text;
            builder.addToken(builder, tokenText, style ? style + spanStyle : spanStyle,
                             spanStartStyle, pos + tokenText.length == nextChange ? spanEndStyle : "", title, css);
          }
          if (end >= upto) {text = text.slice(upto - pos); pos = upto; break;}
          pos = end;
          spanStartStyle = "";
        }
        text = allText.slice(at, at = styles[i++]);
        style = interpretTokenStyle(styles[i++], builder.cm.options);
      }
    }
  }

  // DOCUMENT DATA STRUCTURE

  // By default, updates that start and end at the beginning of a line
  // are treated specially, in order to make the association of line
  // widgets and marker elements with the text behave more intuitive.
  function isWholeLineUpdate(doc, change) {
    return change.from.ch == 0 && change.to.ch == 0 && lst(change.text) == "" &&
      (!doc.cm || doc.cm.options.wholeLineUpdateBefore);
  }

  // Perform a change on the document data structure.
  function updateDoc(doc, change, markedSpans, estimateHeight) {
    function spansFor(n) {return markedSpans ? markedSpans[n] : null;}
    function update(line, text, spans) {
      updateLine(line, text, spans, estimateHeight);
      signalLater(line, "change", line, change);
    }
    function linesFor(start, end) {
      for (var i = start, result = []; i < end; ++i)
        result.push(new Line(text[i], spansFor(i), estimateHeight));
      return result;
    }

    var from = change.from, to = change.to, text = change.text;
    var firstLine = getLine(doc, from.line), lastLine = getLine(doc, to.line);
    var lastText = lst(text), lastSpans = spansFor(text.length - 1), nlines = to.line - from.line;

    // Adjust the line structure
    if (change.full) {
      doc.insert(0, linesFor(0, text.length));
      doc.remove(text.length, doc.size - text.length);
    } else if (isWholeLineUpdate(doc, change)) {
      // This is a whole-line replace. Treated specially to make
      // sure line objects move the way they are supposed to.
      var added = linesFor(0, text.length - 1);
      update(lastLine, lastLine.text, lastSpans);
      if (nlines) doc.remove(from.line, nlines);
      if (added.length) doc.insert(from.line, added);
    } else if (firstLine == lastLine) {
      if (text.length == 1) {
        update(firstLine, firstLine.text.slice(0, from.ch) + lastText + firstLine.text.slice(to.ch), lastSpans);
      } else {
        var added = linesFor(1, text.length - 1);
        added.push(new Line(lastText + firstLine.text.slice(to.ch), lastSpans, estimateHeight));
        update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0));
        doc.insert(from.line + 1, added);
      }
    } else if (text.length == 1) {
      update(firstLine, firstLine.text.slice(0, from.ch) + text[0] + lastLine.text.slice(to.ch), spansFor(0));
      doc.remove(from.line + 1, nlines);
    } else {
      update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0));
      update(lastLine, lastText + lastLine.text.slice(to.ch), lastSpans);
      var added = linesFor(1, text.length - 1);
      if (nlines > 1) doc.remove(from.line + 1, nlines - 1);
      doc.insert(from.line + 1, added);
    }

    signalLater(doc, "change", doc, change);
  }

  // The document is represented as a BTree consisting of leaves, with
  // chunk of lines in them, and branches, with up to ten leaves or
  // other branch nodes below them. The top node is always a branch
  // node, and is the document object itself (meaning it has
  // additional methods and properties).
  //
  // All nodes have parent links. The tree is used both to go from
  // line numbers to line objects, and to go from objects to numbers.
  // It also indexes by height, and is used to convert between height
  // and line object, and to find the total height of the document.
  //
  // See also http://marijnhaverbeke.nl/blog/codemirror-line-tree.html

  function LeafChunk(lines) {
    this.lines = lines;
    this.parent = null;
    for (var i = 0, height = 0; i < lines.length; ++i) {
      lines[i].parent = this;
      height += lines[i].height;
    }
    this.height = height;
  }

  LeafChunk.prototype = {
    chunkSize: function() { return this.lines.length; },
    // Remove the n lines at offset 'at'.
    removeInner: function(at, n) {
      for (var i = at, e = at + n; i < e; ++i) {
        var line = this.lines[i];
        this.height -= line.height;
        cleanUpLine(line);
        signalLater(line, "delete");
      }
      this.lines.splice(at, n);
    },
    // Helper used to collapse a small branch into a single leaf.
    collapse: function(lines) {
      lines.push.apply(lines, this.lines);
    },
    // Insert the given array of lines at offset 'at', count them as
    // having the given height.
    insertInner: function(at, lines, height) {
      this.height += height;
      this.lines = this.lines.slice(0, at).concat(lines).concat(this.lines.slice(at));
      for (var i = 0; i < lines.length; ++i) lines[i].parent = this;
    },
    // Used to iterate over a part of the tree.
    iterN: function(at, n, op) {
      for (var e = at + n; at < e; ++at)
        if (op(this.lines[at])) return true;
    }
  };

  function BranchChunk(children) {
    this.children = children;
    var size = 0, height = 0;
    for (var i = 0; i < children.length; ++i) {
      var ch = children[i];
      size += ch.chunkSize(); height += ch.height;
      ch.parent = this;
    }
    this.size = size;
    this.height = height;
    this.parent = null;
  }

  BranchChunk.prototype = {
    chunkSize: function() { return this.size; },
    removeInner: function(at, n) {
      this.size -= n;
      for (var i = 0; i < this.children.length; ++i) {
        var child = this.children[i], sz = child.chunkSize();
        if (at < sz) {
          var rm = Math.min(n, sz - at), oldHeight = child.height;
          child.removeInner(at, rm);
          this.height -= oldHeight - child.height;
          if (sz == rm) { this.children.splice(i--, 1); child.parent = null; }
          if ((n -= rm) == 0) break;
          at = 0;
        } else at -= sz;
      }
      // If the result is smaller than 25 lines, ensure that it is a
      // single leaf node.
      if (this.size - n < 25 &&
          (this.children.length > 1 || !(this.children[0] instanceof LeafChunk))) {
        var lines = [];
        this.collapse(lines);
        this.children = [new LeafChunk(lines)];
        this.children[0].parent = this;
      }
    },
    collapse: function(lines) {
      for (var i = 0; i < this.children.length; ++i) this.children[i].collapse(lines);
    },
    insertInner: function(at, lines, height) {
      this.size += lines.length;
      this.height += height;
      for (var i = 0; i < this.children.length; ++i) {
        var child = this.children[i], sz = child.chunkSize();
        if (at <= sz) {
          child.insertInner(at, lines, height);
          if (child.lines && child.lines.length > 50) {
            while (child.lines.length > 50) {
              var spilled = child.lines.splice(child.lines.length - 25, 25);
              var newleaf = new LeafChunk(spilled);
              child.height -= newleaf.height;
              this.children.splice(i + 1, 0, newleaf);
              newleaf.parent = this;
            }
            this.maybeSpill();
          }
          break;
        }
        at -= sz;
      }
    },
    // When a node has grown, check whether it should be split.
    maybeSpill: function() {
      if (this.children.length <= 10) return;
      var me = this;
      do {
        var spilled = me.children.splice(me.children.length - 5, 5);
        var sibling = new BranchChunk(spilled);
        if (!me.parent) { // Become the parent node
          var copy = new BranchChunk(me.children);
          copy.parent = me;
          me.children = [copy, sibling];
          me = copy;
        } else {
          me.size -= sibling.size;
          me.height -= sibling.height;
          var myIndex = indexOf(me.parent.children, me);
          me.parent.children.splice(myIndex + 1, 0, sibling);
        }
        sibling.parent = me.parent;
      } while (me.children.length > 10);
      me.parent.maybeSpill();
    },
    iterN: function(at, n, op) {
      for (var i = 0; i < this.children.length; ++i) {
        var child = this.children[i], sz = child.chunkSize();
        if (at < sz) {
          var used = Math.min(n, sz - at);
          if (child.iterN(at, used, op)) return true;
          if ((n -= used) == 0) break;
          at = 0;
        } else at -= sz;
      }
    }
  };

  var nextDocId = 0;
  var Doc = CodeMirror.Doc = function(text, mode, firstLine) {
    if (!(this instanceof Doc)) return new Doc(text, mode, firstLine);
    if (firstLine == null) firstLine = 0;

    BranchChunk.call(this, [new LeafChunk([new Line("", null)])]);
    this.first = firstLine;
    this.scrollTop = this.scrollLeft = 0;
    this.cantEdit = false;
    this.cleanGeneration = 1;
    this.frontier = firstLine;
    var start = Pos(firstLine, 0);
    this.sel = simpleSelection(start);
    this.history = new History(null);
    this.id = ++nextDocId;
    this.modeOption = mode;

    if (typeof text == "string") text = splitLines(text);
    updateDoc(this, {from: start, to: start, text: text});
    setSelection(this, simpleSelection(start), sel_dontScroll);
  };

  Doc.prototype = createObj(BranchChunk.prototype, {
    constructor: Doc,
    // Iterate over the document. Supports two forms -- with only one
    // argument, it calls that for each line in the document. With
    // three, it iterates over the range given by the first two (with
    // the second being non-inclusive).
    iter: function(from, to, op) {
      if (op) this.iterN(from - this.first, to - from, op);
      else this.iterN(this.first, this.first + this.size, from);
    },

    // Non-public interface for adding and removing lines.
    insert: function(at, lines) {
      var height = 0;
      for (var i = 0; i < lines.length; ++i) height += lines[i].height;
      this.insertInner(at - this.first, lines, height);
    },
    remove: function(at, n) { this.removeInner(at - this.first, n); },

    // From here, the methods are part of the public interface. Most
    // are also available from CodeMirror (editor) instances.

    getValue: function(lineSep, lineFilter) {
      var lines = getLines(this, this.first, this.first + this.size, lineFilter);
      if (lineSep === false) return lines;
      return lines.join(lineSep || "\n");
    },
    setValue: docMethodOp(function(code) {
      var top = Pos(this.first, 0), last = this.first + this.size - 1;
      makeChange(this, {from: top, to: Pos(last, getLine(this, last).text.length),
                        text: splitLines(code), origin: "setValue", full: true}, true);
      setSelection(this, simpleSelection(top));
    }),
    replaceRange: function(code, from, to, origin) {
      from = clipPos(this, from);
      to = to ? clipPos(this, to) : from;
      replaceRange(this, code, from, to, origin);
    },
    getRange: function(from, to, lineSep) {
      var lines = getBetween(this, clipPos(this, from), clipPos(this, to));
      if (lineSep === false) return lines;
      return lines.join(lineSep || "\n");
    },

    getLine: function(line) {var l = this.getLineHandle(line); return l && l.text;},

    getLineHandle: function(line) {if (isLine(this, line)) return getLine(this, line);},
    getLineNumber: function(line) {return lineNo(line);},

    getLineHandleVisualStart: function(line) {
      if (typeof line == "number") line = getLine(this, line);
      return visualLine(line);
    },

    lineCount: function() {return this.size;},
    firstLine: function() {return this.first;},
    lastLine: function() {return this.first + this.size - 1;},

    clipPos: function(pos) {return clipPos(this, pos);},

    getCursor: function(start) {
      var range = this.sel.primary(), pos;
      if (start == null || start == "head") pos = range.head;
      else if (start == "anchor") pos = range.anchor;
      else if (start == "end" || start == "to" || start === false) pos = range.to();
      else pos = range.from();
      return pos;
    },
    listSelections: function() { return this.sel.ranges; },
    somethingSelected: function() {return this.sel.somethingSelected();},

    setCursor: docMethodOp(function(line, ch, options) {
      setSimpleSelection(this, clipPos(this, typeof line == "number" ? Pos(line, ch || 0) : line), null, options);
    }),
    setSelection: docMethodOp(function(anchor, head, options) {
      setSimpleSelection(this, clipPos(this, anchor), clipPos(this, head || anchor), options);
    }),
    extendSelection: docMethodOp(function(head, other, options) {
      extendSelection(this, clipPos(this, head), other && clipPos(this, other), options);
    }),
    extendSelections: docMethodOp(function(heads, options) {
      extendSelections(this, clipPosArray(this, heads, options));
    }),
    extendSelectionsBy: docMethodOp(function(f, options) {
      extendSelections(this, map(this.sel.ranges, f), options);
    }),
    setSelections: docMethodOp(function(ranges, primary, options) {
      if (!ranges.length) return;
      for (var i = 0, out = []; i < ranges.length; i++)
        out[i] = new Range(clipPos(this, ranges[i].anchor),
                           clipPos(this, ranges[i].head));
      if (primary == null) primary = Math.min(ranges.length - 1, this.sel.primIndex);
      setSelection(this, normalizeSelection(out, primary), options);
    }),
    addSelection: docMethodOp(function(anchor, head, options) {
      var ranges = this.sel.ranges.slice(0);
      ranges.push(new Range(clipPos(this, anchor), clipPos(this, head || anchor)));
      setSelection(this, normalizeSelection(ranges, ranges.length - 1), options);
    }),

    getSelection: function(lineSep) {
      var ranges = this.sel.ranges, lines;
      for (var i = 0; i < ranges.length; i++) {
        var sel = getBetween(this, ranges[i].from(), ranges[i].to());
        lines = lines ? lines.concat(sel) : sel;
      }
      if (lineSep === false) return lines;
      else return lines.join(lineSep || "\n");
    },
    getSelections: function(lineSep) {
      var parts = [], ranges = this.sel.ranges;
      for (var i = 0; i < ranges.length; i++) {
        var sel = getBetween(this, ranges[i].from(), ranges[i].to());
        if (lineSep !== false) sel = sel.join(lineSep || "\n");
        parts[i] = sel;
      }
      return parts;
    },
    replaceSelection: function(code, collapse, origin) {
      var dup = [];
      for (var i = 0; i < this.sel.ranges.length; i++)
        dup[i] = code;
      this.replaceSelections(dup, collapse, origin || "+input");
    },
    replaceSelections: docMethodOp(function(code, collapse, origin) {
      var changes = [], sel = this.sel;
      for (var i = 0; i < sel.ranges.length; i++) {
        var range = sel.ranges[i];
        changes[i] = {from: range.from(), to: range.to(), text: splitLines(code[i]), origin: origin};
      }
      var newSel = collapse && collapse != "end" && computeReplacedSel(this, changes, collapse);
      for (var i = changes.length - 1; i >= 0; i--)
        makeChange(this, changes[i]);
      if (newSel) setSelectionReplaceHistory(this, newSel);
      else if (this.cm) ensureCursorVisible(this.cm);
    }),
    undo: docMethodOp(function() {makeChangeFromHistory(this, "undo");}),
    redo: docMethodOp(function() {makeChangeFromHistory(this, "redo");}),
    undoSelection: docMethodOp(function() {makeChangeFromHistory(this, "undo", true);}),
    redoSelection: docMethodOp(function() {makeChangeFromHistory(this, "redo", true);}),

    setExtending: function(val) {this.extend = val;},
    getExtending: function() {return this.extend;},

    historySize: function() {
      var hist = this.history, done = 0, undone = 0;
      for (var i = 0; i < hist.done.length; i++) if (!hist.done[i].ranges) ++done;
      for (var i = 0; i < hist.undone.length; i++) if (!hist.undone[i].ranges) ++undone;
      return {undo: done, redo: undone};
    },
    clearHistory: function() {this.history = new History(this.history.maxGeneration);},

    markClean: function() {
      this.cleanGeneration = this.changeGeneration(true);
    },
    changeGeneration: function(forceSplit) {
      if (forceSplit)
        this.history.lastOp = this.history.lastSelOp = this.history.lastOrigin = null;
      return this.history.generation;
    },
    isClean: function (gen) {
      return this.history.generation == (gen || this.cleanGeneration);
    },

    getHistory: function() {
      return {done: copyHistoryArray(this.history.done),
              undone: copyHistoryArray(this.history.undone)};
    },
    setHistory: function(histData) {
      var hist = this.history = new History(this.history.maxGeneration);
      hist.done = copyHistoryArray(histData.done.slice(0), null, true);
      hist.undone = copyHistoryArray(histData.undone.slice(0), null, true);
    },

    addLineClass: docMethodOp(function(handle, where, cls) {
      return changeLine(this, handle, where == "gutter" ? "gutter" : "class", function(line) {
        var prop = where == "text" ? "textClass"
                 : where == "background" ? "bgClass"
                 : where == "gutter" ? "gutterClass" : "wrapClass";
        if (!line[prop]) line[prop] = cls;
        else if (classTest(cls).test(line[prop])) return false;
        else line[prop] += " " + cls;
        return true;
      });
    }),
    removeLineClass: docMethodOp(function(handle, where, cls) {
      return changeLine(this, handle, where == "gutter" ? "gutter" : "class", function(line) {
        var prop = where == "text" ? "textClass"
                 : where == "background" ? "bgClass"
                 : where == "gutter" ? "gutterClass" : "wrapClass";
        var cur = line[prop];
        if (!cur) return false;
        else if (cls == null) line[prop] = null;
        else {
          var found = cur.match(classTest(cls));
          if (!found) return false;
          var end = found.index + found[0].length;
          line[prop] = cur.slice(0, found.index) + (!found.index || end == cur.length ? "" : " ") + cur.slice(end) || null;
        }
        return true;
      });
    }),

    addLineWidget: docMethodOp(function(handle, node, options) {
      return addLineWidget(this, handle, node, options);
    }),
    removeLineWidget: function(widget) { widget.clear(); },

    markText: function(from, to, options) {
      return markText(this, clipPos(this, from), clipPos(this, to), options, "range");
    },
    setBookmark: function(pos, options) {
      var realOpts = {replacedWith: options && (options.nodeType == null ? options.widget : options),
                      insertLeft: options && options.insertLeft,
                      clearWhenEmpty: false, shared: options && options.shared,
                      handleMouseEvents: options && options.handleMouseEvents};
      pos = clipPos(this, pos);
      return markText(this, pos, pos, realOpts, "bookmark");
    },
    findMarksAt: function(pos) {
      pos = clipPos(this, pos);
      var markers = [], spans = getLine(this, pos.line).markedSpans;
      if (spans) for (var i = 0; i < spans.length; ++i) {
        var span = spans[i];
        if ((span.from == null || span.from <= pos.ch) &&
            (span.to == null || span.to >= pos.ch))
          markers.push(span.marker.parent || span.marker);
      }
      return markers;
    },
    findMarks: function(from, to, filter) {
      from = clipPos(this, from); to = clipPos(this, to);
      var found = [], lineNo = from.line;
      this.iter(from.line, to.line + 1, function(line) {
        var spans = line.markedSpans;
        if (spans) for (var i = 0; i < spans.length; i++) {
          var span = spans[i];
          if (!(lineNo == from.line && from.ch > span.to ||
                span.from == null && lineNo != from.line||
                lineNo == to.line && span.from > to.ch) &&
              (!filter || filter(span.marker)))
            found.push(span.marker.parent || span.marker);
        }
        ++lineNo;
      });
      return found;
    },
    getAllMarks: function() {
      var markers = [];
      this.iter(function(line) {
        var sps = line.markedSpans;
        if (sps) for (var i = 0; i < sps.length; ++i)
          if (sps[i].from != null) markers.push(sps[i].marker);
      });
      return markers;
    },

    posFromIndex: function(off) {
      var ch, lineNo = this.first;
      this.iter(function(line) {
        var sz = line.text.length + 1;
        if (sz > off) { ch = off; return true; }
        off -= sz;
        ++lineNo;
      });
      return clipPos(this, Pos(lineNo, ch));
    },
    indexFromPos: function (coords) {
      coords = clipPos(this, coords);
      var index = coords.ch;
      if (coords.line < this.first || coords.ch < 0) return 0;
      this.iter(this.first, coords.line, function (line) {
        index += line.text.length + 1;
      });
      return index;
    },

    copy: function(copyHistory) {
      var doc = new Doc(getLines(this, this.first, this.first + this.size), this.modeOption, this.first);
      doc.scrollTop = this.scrollTop; doc.scrollLeft = this.scrollLeft;
      doc.sel = this.sel;
      doc.extend = false;
      if (copyHistory) {
        doc.history.undoDepth = this.history.undoDepth;
        doc.setHistory(this.getHistory());
      }
      return doc;
    },

    linkedDoc: function(options) {
      if (!options) options = {};
      var from = this.first, to = this.first + this.size;
      if (options.from != null && options.from > from) from = options.from;
      if (options.to != null && options.to < to) to = options.to;
      var copy = new Doc(getLines(this, from, to), options.mode || this.modeOption, from);
      if (options.sharedHist) copy.history = this.history;
      (this.linked || (this.linked = [])).push({doc: copy, sharedHist: options.sharedHist});
      copy.linked = [{doc: this, isParent: true, sharedHist: options.sharedHist}];
      copySharedMarkers(copy, findSharedMarkers(this));
      return copy;
    },
    unlinkDoc: function(other) {
      if (other instanceof CodeMirror) other = other.doc;
      if (this.linked) for (var i = 0; i < this.linked.length; ++i) {
        var link = this.linked[i];
        if (link.doc != other) continue;
        this.linked.splice(i, 1);
        other.unlinkDoc(this);
        detachSharedMarkers(findSharedMarkers(this));
        break;
      }
      // If the histories were shared, split them again
      if (other.history == this.history) {
        var splitIds = [other.id];
        linkedDocs(other, function(doc) {splitIds.push(doc.id);}, true);
        other.history = new History(null);
        other.history.done = copyHistoryArray(this.history.done, splitIds);
        other.history.undone = copyHistoryArray(this.history.undone, splitIds);
      }
    },
    iterLinkedDocs: function(f) {linkedDocs(this, f);},

    getMode: function() {return this.mode;},
    getEditor: function() {return this.cm;}
  });

  // Public alias.
  Doc.prototype.eachLine = Doc.prototype.iter;

  // Set up methods on CodeMirror's prototype to redirect to the editor's document.
  var dontDelegate = "iter insert remove copy getEditor constructor".split(" ");
  for (var prop in Doc.prototype) if (Doc.prototype.hasOwnProperty(prop) && indexOf(dontDelegate, prop) < 0)
    CodeMirror.prototype[prop] = (function(method) {
      return function() {return method.apply(this.doc, arguments);};
    })(Doc.prototype[prop]);

  eventMixin(Doc);

  // Call f for all linked documents.
  function linkedDocs(doc, f, sharedHistOnly) {
    function propagate(doc, skip, sharedHist) {
      if (doc.linked) for (var i = 0; i < doc.linked.length; ++i) {
        var rel = doc.linked[i];
        if (rel.doc == skip) continue;
        var shared = sharedHist && rel.sharedHist;
        if (sharedHistOnly && !shared) continue;
        f(rel.doc, shared);
        propagate(rel.doc, doc, shared);
      }
    }
    propagate(doc, null, true);
  }

  // Attach a document to an editor.
  function attachDoc(cm, doc) {
    if (doc.cm) throw new Error("This document is already in use.");
    cm.doc = doc;
    doc.cm = cm;
    estimateLineHeights(cm);
    loadMode(cm);
    if (!cm.options.lineWrapping) findMaxLine(cm);
    cm.options.mode = doc.modeOption;
    regChange(cm);
  }

  // LINE UTILITIES

  // Find the line object corresponding to the given line number.
  function getLine(doc, n) {
    n -= doc.first;
    if (n < 0 || n >= doc.size) throw new Error("There is no line " + (n + doc.first) + " in the document.");
    for (var chunk = doc; !chunk.lines;) {
      for (var i = 0;; ++i) {
        var child = chunk.children[i], sz = child.chunkSize();
        if (n < sz) { chunk = child; break; }
        n -= sz;
      }
    }
    return chunk.lines[n];
  }

  // Get the part of a document between two positions, as an array of
  // strings.
  function getBetween(doc, start, end) {
    var out = [], n = start.line;
    doc.iter(start.line, end.line + 1, function(line) {
      var text = line.text;
      if (n == end.line) text = text.slice(0, end.ch);
      if (n == start.line) text = text.slice(start.ch);
      out.push(text);
      ++n;
    });
    return out;
  }
  // Get the lines between from and to, as array of strings.
  function getLines(doc, from, to, lineFilter) {
    var out = [];
    doc.iter(from, to, function(line) {
      var text = line.text;
      if(lineFilter){
        text = lineFilter(line);
      }
      out.push(text);
    });
    return out;
  }

  // Update the height of a line, propagating the height change
  // upwards to parent nodes.
  function updateLineHeight(line, height) {
    var diff = height - line.height;
    if (diff) for (var n = line; n; n = n.parent) n.height += diff;
  }

  // Given a line object, find its line number by walking up through
  // its parent links.
  function lineNo(line) {
    if (line.parent == null) return null;
    var cur = line.parent, no = indexOf(cur.lines, line);
    for (var chunk = cur.parent; chunk; cur = chunk, chunk = chunk.parent) {
      for (var i = 0;; ++i) {
        if (chunk.children[i] == cur) break;
        no += chunk.children[i].chunkSize();
      }
    }
    return no + cur.first;
  }

  // Find the line at the given vertical position, using the height
  // information in the document tree.
  function lineAtHeight(chunk, h) {
    var n = chunk.first;
    outer: do {
      for (var i = 0; i < chunk.children.length; ++i) {
        var child = chunk.children[i], ch = child.height;
        if (h < ch) { chunk = child; continue outer; }
        h -= ch;
        n += child.chunkSize();
      }
      return n;
    } while (!chunk.lines);
    for (var i = 0; i < chunk.lines.length; ++i) {
      var line = chunk.lines[i], lh = line.height;
      if (h < lh) break;
      h -= lh;
    }
    return n + i;
  }


  // Find the height above the given line.
  function heightAtLine(lineObj) {
    lineObj = visualLine(lineObj);

    var h = 0, chunk = lineObj.parent;
    for (var i = 0; i < chunk.lines.length; ++i) {
      var line = chunk.lines[i];
      if (line == lineObj) break;
      else h += line.height;
    }
    for (var p = chunk.parent; p; chunk = p, p = chunk.parent) {
      for (var i = 0; i < p.children.length; ++i) {
        var cur = p.children[i];
        if (cur == chunk) break;
        else h += cur.height;
      }
    }
    return h;
  }

  // Get the bidi ordering for the given line (and cache it). Returns
  // false for lines that are fully left-to-right, and an array of
  // BidiSpan objects otherwise.
  function getOrder(line) {
    var order = line.order;
    if (order == null) order = line.order = bidiOrdering(line.text);
    return order;
  }

  // HISTORY

  function History(startGen) {
    // Arrays of change events and selections. Doing something adds an
    // event to done and clears undo. Undoing moves events from done
    // to undone, redoing moves them in the other direction.
    this.done = []; this.undone = [];
    this.undoDepth = Infinity;
    // Used to track when changes can be merged into a single undo
    // event
    this.lastModTime = this.lastSelTime = 0;
    this.lastOp = this.lastSelOp = null;
    this.lastOrigin = this.lastSelOrigin = null;
    // Used by the isClean() method
    this.generation = this.maxGeneration = startGen || 1;
  }

  // Create a history change event from an updateDoc-style change
  // object.
  function historyChangeFromChange(doc, change) {
    var histChange = {from: copyPos(change.from), to: changeEnd(change), text: getBetween(doc, change.from, change.to)};
    attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1);
    linkedDocs(doc, function(doc) {attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1);}, true);
    return histChange;
  }

  // Pop all selection events off the end of a history array. Stop at
  // a change event.
  function clearSelectionEvents(array) {
    while (array.length) {
      var last = lst(array);
      if (last.ranges) array.pop();
      else break;
    }
  }

  // Find the top change event in the history. Pop off selection
  // events that are in the way.
  function lastChangeEvent(hist, force) {
    if (force) {
      clearSelectionEvents(hist.done);
      return lst(hist.done);
    } else if (hist.done.length && !lst(hist.done).ranges) {
      return lst(hist.done);
    } else if (hist.done.length > 1 && !hist.done[hist.done.length - 2].ranges) {
      hist.done.pop();
      return lst(hist.done);
    }
  }

  // Register a change in the history. Merges changes that are within
  // a single operation, ore are close together with an origin that
  // allows merging (starting with "+") into a single event.
  function addChangeToHistory(doc, change, selAfter, opId) {
    var hist = doc.history;
    hist.undone.length = 0;
    var time = +new Date, cur;

    if ((hist.lastOp == opId ||
         hist.lastOrigin == change.origin && change.origin &&
         ((change.origin.charAt(0) == "+" && doc.cm && hist.lastModTime > time - doc.cm.options.historyEventDelay) ||
          change.origin.charAt(0) == "*")) &&
        (cur = lastChangeEvent(hist, hist.lastOp == opId))) {
      // Merge this change into the last event
      var last = lst(cur.changes);
      if (cmp(change.from, change.to) == 0 && cmp(change.from, last.to) == 0) {
        // Optimized case for simple insertion -- don't want to add
        // new changesets for every character typed
        last.to = changeEnd(change);
      } else {
        // Add new sub-event
        cur.changes.push(historyChangeFromChange(doc, change));
      }
    } else {
      // Can not be merged, start a new event.
      var before = lst(hist.done);
      if (!before || !before.ranges)
        pushSelectionToHistory(doc.sel, hist.done);
      cur = {changes: [historyChangeFromChange(doc, change)],
             generation: hist.generation};
      hist.done.push(cur);
      while (hist.done.length > hist.undoDepth) {
        hist.done.shift();
        if (!hist.done[0].ranges) hist.done.shift();
      }
    }
    hist.done.push(selAfter);
    hist.generation = ++hist.maxGeneration;
    hist.lastModTime = hist.lastSelTime = time;
    hist.lastOp = hist.lastSelOp = opId;
    hist.lastOrigin = hist.lastSelOrigin = change.origin;

    if (!last) signal(doc, "historyAdded");
  }

  function selectionEventCanBeMerged(doc, origin, prev, sel) {
    var ch = origin.charAt(0);
    return ch == "*" ||
      ch == "+" &&
      prev.ranges.length == sel.ranges.length &&
      prev.somethingSelected() == sel.somethingSelected() &&
      new Date - doc.history.lastSelTime <= (doc.cm ? doc.cm.options.historyEventDelay : 500);
  }

  // Called whenever the selection changes, sets the new selection as
  // the pending selection in the history, and pushes the old pending
  // selection into the 'done' array when it was significantly
  // different (in number of selected ranges, emptiness, or time).
  function addSelectionToHistory(doc, sel, opId, options) {
    var hist = doc.history, origin = options && options.origin;

    // A new event is started when the previous origin does not match
    // the current, or the origins don't allow matching. Origins
    // starting with * are always merged, those starting with + are
    // merged when similar and close together in time.
    if (opId == hist.lastSelOp ||
        (origin && hist.lastSelOrigin == origin &&
         (hist.lastModTime == hist.lastSelTime && hist.lastOrigin == origin ||
          selectionEventCanBeMerged(doc, origin, lst(hist.done), sel))))
      hist.done[hist.done.length - 1] = sel;
    else
      pushSelectionToHistory(sel, hist.done);

    hist.lastSelTime = +new Date;
    hist.lastSelOrigin = origin;
    hist.lastSelOp = opId;
    if (options && options.clearRedo !== false)
      clearSelectionEvents(hist.undone);
  }

  function pushSelectionToHistory(sel, dest) {
    var top = lst(dest);
    if (!(top && top.ranges && top.equals(sel)))
      dest.push(sel);
  }

  // Used to store marked span information in the history.
  function attachLocalSpans(doc, change, from, to) {
    var existing = change["spans_" + doc.id], n = 0;
    doc.iter(Math.max(doc.first, from), Math.min(doc.first + doc.size, to), function(line) {
      if (line.markedSpans)
        (existing || (existing = change["spans_" + doc.id] = {}))[n] = line.markedSpans;
      ++n;
    });
  }

  // When un/re-doing restores text containing marked spans, those
  // that have been explicitly cleared should not be restored.
  function removeClearedSpans(spans) {
    if (!spans) return null;
    for (var i = 0, out; i < spans.length; ++i) {
      if (spans[i].marker.explicitlyCleared) { if (!out) out = spans.slice(0, i); }
      else if (out) out.push(spans[i]);
    }
    return !out ? spans : out.length ? out : null;
  }

  // Retrieve and filter the old marked spans stored in a change event.
  function getOldSpans(doc, change) {
    var found = change["spans_" + doc.id];
    if (!found) return null;
    for (var i = 0, nw = []; i < change.text.length; ++i)
      nw.push(removeClearedSpans(found[i]));
    return nw;
  }

  // Used both to provide a JSON-safe object in .getHistory, and, when
  // detaching a document, to split the history in two
  function copyHistoryArray(events, newGroup, instantiateSel) {
    for (var i = 0, copy = []; i < events.length; ++i) {
      var event = events[i];
      if (event.ranges) {
        copy.push(instantiateSel ? Selection.prototype.deepCopy.call(event) : event);
        continue;
      }
      var changes = event.changes, newChanges = [];
      copy.push({changes: newChanges});
      for (var j = 0; j < changes.length; ++j) {
        var change = changes[j], m;
        newChanges.push({from: change.from, to: change.to, text: change.text});
        if (newGroup) for (var prop in change) if (m = prop.match(/^spans_(\d+)$/)) {
          if (indexOf(newGroup, Number(m[1])) > -1) {
            lst(newChanges)[prop] = change[prop];
            delete change[prop];
          }
        }
      }
    }
    return copy;
  }

  // Rebasing/resetting history to deal with externally-sourced changes

  function rebaseHistSelSingle(pos, from, to, diff) {
    if (to < pos.line) {
      pos.line += diff;
    } else if (from < pos.line) {
      pos.line = from;
      pos.ch = 0;
    }
  }

  // Tries to rebase an array of history events given a change in the
  // document. If the change touches the same lines as the event, the
  // event, and everything 'behind' it, is discarded. If the change is
  // before the event, the event's positions are updated. Uses a
  // copy-on-write scheme for the positions, to avoid having to
  // reallocate them all on every rebase, but also avoid problems with
  // shared position objects being unsafely updated.
  function rebaseHistArray(array, from, to, diff) {
    for (var i = 0; i < array.length; ++i) {
      var sub = array[i], ok = true;
      if (sub.ranges) {
        if (!sub.copied) { sub = array[i] = sub.deepCopy(); sub.copied = true; }
        for (var j = 0; j < sub.ranges.length; j++) {
          rebaseHistSelSingle(sub.ranges[j].anchor, from, to, diff);
          rebaseHistSelSingle(sub.ranges[j].head, from, to, diff);
        }
        continue;
      }
      for (var j = 0; j < sub.changes.length; ++j) {
        var cur = sub.changes[j];
        if (to < cur.from.line) {
          cur.from = Pos(cur.from.line + diff, cur.from.ch);
          cur.to = Pos(cur.to.line + diff, cur.to.ch);
        } else if (from <= cur.to.line) {
          ok = false;
          break;
        }
      }
      if (!ok) {
        array.splice(0, i + 1);
        i = 0;
      }
    }
  }

  function rebaseHist(hist, change) {
    var from = change.from.line, to = change.to.line, diff = change.text.length - (to - from) - 1;
    rebaseHistArray(hist.done, from, to, diff);
    rebaseHistArray(hist.undone, from, to, diff);
  }

  // EVENT UTILITIES

  // Due to the fact that we still support jurassic IE versions, some
  // compatibility wrappers are needed.

  var e_preventDefault = CodeMirror.e_preventDefault = function(e) {
    if (e.preventDefault) e.preventDefault();
    else e.returnValue = false;
  };
  var e_stopPropagation = CodeMirror.e_stopPropagation = function(e) {
    if (e.stopPropagation) e.stopPropagation();
    else e.cancelBubble = true;
  };
  function e_defaultPrevented(e) {
    return e.defaultPrevented != null ? e.defaultPrevented : e.returnValue == false;
  }
  var e_stop = CodeMirror.e_stop = function(e) {e_preventDefault(e); e_stopPropagation(e);};

  function e_target(e) {return e.target || e.srcElement;}
  function e_button(e) {
    var b = e.which;
    if (b == null) {
      if (e.button & 1) b = 1;
      else if (e.button & 2) b = 3;
      else if (e.button & 4) b = 2;
    }
    if (mac && e.ctrlKey && b == 1) b = 3;
    return b;
  }

  // EVENT HANDLING

  // Lightweight event framework. on/off also work on DOM nodes,
  // registering native DOM handlers.

  var on = CodeMirror.on = function(emitter, type, f) {
    if (emitter.addEventListener)
      emitter.addEventListener(type, f, false);
    else if (emitter.attachEvent)
      emitter.attachEvent("on" + type, f);
    else {
      var map = emitter._handlers || (emitter._handlers = {});
      var arr = map[type] || (map[type] = []);
      arr.push(f);
    }
  };

  var off = CodeMirror.off = function(emitter, type, f) {
    if (emitter.removeEventListener)
      emitter.removeEventListener(type, f, false);
    else if (emitter.detachEvent)
      emitter.detachEvent("on" + type, f);
    else {
      var arr = emitter._handlers && emitter._handlers[type];
      if (!arr) return;
      for (var i = 0; i < arr.length; ++i)
        if (arr[i] == f) { arr.splice(i, 1); break; }
    }
  };

  var signal = CodeMirror.signal = function(emitter, type /*, values...*/) {
    var arr = emitter._handlers && emitter._handlers[type];
    if (!arr) return;
    var args = Array.prototype.slice.call(arguments, 2);
    for (var i = 0; i < arr.length; ++i) arr[i].apply(null, args);
  };

  var orphanDelayedCallbacks = null;

  // Often, we want to signal events at a point where we are in the
  // middle of some work, but don't want the handler to start calling
  // other methods on the editor, which might be in an inconsistent
  // state or simply not expect any other events to happen.
  // signalLater looks whether there are any handlers, and schedules
  // them to be executed when the last operation ends, or, if no
  // operation is active, when a timeout fires.
  function signalLater(emitter, type /*, values...*/) {
    var arr = emitter._handlers && emitter._handlers[type];
    if (!arr) return;
    var args = Array.prototype.slice.call(arguments, 2), list;
    if (operationGroup) {
      list = operationGroup.delayedCallbacks;
    } else if (orphanDelayedCallbacks) {
      list = orphanDelayedCallbacks;
    } else {
      list = orphanDelayedCallbacks = [];
      setTimeout(fireOrphanDelayed, 0);
    }
    function bnd(f) {return function(){f.apply(null, args);};};
    for (var i = 0; i < arr.length; ++i)
      list.push(bnd(arr[i]));
  }

  function fireOrphanDelayed() {
    var delayed = orphanDelayedCallbacks;
    orphanDelayedCallbacks = null;
    for (var i = 0; i < delayed.length; ++i) delayed[i]();
  }

  // The DOM events that CodeMirror handles can be overridden by
  // registering a (non-DOM) handler on the editor for the event name,
  // and preventDefault-ing the event in that handler.
  function signalDOMEvent(cm, e, override) {
    if (typeof e == "string")
      e = {type: e, preventDefault: function() { this.defaultPrevented = true; }};
    signal(cm, override || e.type, cm, e);
    return e_defaultPrevented(e) || e.codemirrorIgnore;
  }

  function signalCursorActivity(cm) {
    var arr = cm._handlers && cm._handlers.cursorActivity;
    if (!arr) return;
    var set = cm.curOp.cursorActivityHandlers || (cm.curOp.cursorActivityHandlers = []);
    for (var i = 0; i < arr.length; ++i) if (indexOf(set, arr[i]) == -1)
      set.push(arr[i]);
  }

  function hasHandler(emitter, type) {
    var arr = emitter._handlers && emitter._handlers[type];
    return arr && arr.length > 0;
  }

  // Add on and off methods to a constructor's prototype, to make
  // registering events on such objects more convenient.
  function eventMixin(ctor) {
    ctor.prototype.on = function(type, f) {on(this, type, f);};
    ctor.prototype.off = function(type, f) {off(this, type, f);};
  }

  // MISC UTILITIES

  // Number of pixels added to scroller and sizer to hide scrollbar
  var scrollerGap = 30;

  // Returned or thrown by various protocols to signal 'I'm not
  // handling this'.
  var Pass = CodeMirror.Pass = {toString: function(){return "CodeMirror.Pass";}};

  // Reused option objects for setSelection & friends
  var sel_dontScroll = {scroll: false}, sel_mouse = {origin: "*mouse"}, sel_move = {origin: "+move"};

  function Delayed() {this.id = null;}
  Delayed.prototype.set = function(ms, f) {
    clearTimeout(this.id);
    this.id = setTimeout(f, ms);
  };

  // Counts the column offset in a string, taking tabs into account.
  // Used mostly to find indentation.
  var countColumn = CodeMirror.countColumn = function(string, end, tabSize, startIndex, startValue) {
    if (end == null) {
      end = string.search(/[^\s\u00a0]/);
      if (end == -1) end = string.length;
    }
    for (var i = startIndex || 0, n = startValue || 0;;) {
      var nextTab = string.indexOf("\t", i);
      if (nextTab < 0 || nextTab >= end)
        return n + (end - i);
      n += nextTab - i;
      n += tabSize - (n % tabSize);
      i = nextTab + 1;
    }
  };

  // The inverse of countColumn -- find the offset that corresponds to
  // a particular column.
  function findColumn(string, goal, tabSize) {
    for (var pos = 0, col = 0;;) {
      var nextTab = string.indexOf("\t", pos);
      if (nextTab == -1) nextTab = string.length;
      var skipped = nextTab - pos;
      if (nextTab == string.length || col + skipped >= goal)
        return pos + Math.min(skipped, goal - col);
      col += nextTab - pos;
      col += tabSize - (col % tabSize);
      pos = nextTab + 1;
      if (col >= goal) return pos;
    }
  }

  var spaceStrs = [""];
  function spaceStr(n) {
    while (spaceStrs.length <= n)
      spaceStrs.push(lst(spaceStrs) + " ");
    return spaceStrs[n];
  }

  function lst(arr) { return arr[arr.length-1]; }

  var selectInput = function(node) { node.select(); };
  if (ios) // Mobile Safari apparently has a bug where select() is broken.
    selectInput = function(node) { node.selectionStart = 0; node.selectionEnd = node.value.length; };
  else if (ie) // Suppress mysterious IE10 errors
    selectInput = function(node) { try { node.select(); } catch(_e) {} };

  function indexOf(array, elt) {
    for (var i = 0; i < array.length; ++i)
      if (array[i] == elt) return i;
    return -1;
  }
  function map(array, f) {
    var out = [];
    for (var i = 0; i < array.length; i++) out[i] = f(array[i], i);
    return out;
  }

  function nothing() {}

  function createObj(base, props) {
    var inst;
    if (Object.create) {
      inst = Object.create(base);
    } else {
      nothing.prototype = base;
      inst = new nothing();
    }
    if (props) copyObj(props, inst);
    return inst;
  };

  function copyObj(obj, target, overwrite) {
    if (!target) target = {};
    for (var prop in obj)
      if (obj.hasOwnProperty(prop) && (overwrite !== false || !target.hasOwnProperty(prop)))
        target[prop] = obj[prop];
    return target;
  }

  function bind(f) {
    var args = Array.prototype.slice.call(arguments, 1);
    return function(){return f.apply(null, args);};
  }

  var nonASCIISingleCaseWordChar = /[\u00df\u0587\u0590-\u05f4\u0600-\u06ff\u3040-\u309f\u30a0-\u30ff\u3400-\u4db5\u4e00-\u9fcc\uac00-\ud7af]/;
  var isWordCharBasic = CodeMirror.isWordChar = function(ch) {
    return /\w/.test(ch) || ch > "\x80" &&
      (ch.toUpperCase() != ch.toLowerCase() || nonASCIISingleCaseWordChar.test(ch));
  };
  function isWordChar(ch, helper) {
    if (!helper) return isWordCharBasic(ch);
    if (helper.source.indexOf("\\w") > -1 && isWordCharBasic(ch)) return true;
    return helper.test(ch);
  }

  function isEmpty(obj) {
    for (var n in obj) if (obj.hasOwnProperty(n) && obj[n]) return false;
    return true;
  }

  // Extending unicode characters. A series of a non-extending char +
  // any number of extending chars is treated as a single unit as far
  // as editing and measuring is concerned. This is not fully correct,
  // since some scripts/fonts/browsers also treat other configurations
  // of code points as a group.
  var extendingChars = /[\u0300-\u036f\u0483-\u0489\u0591-\u05bd\u05bf\u05c1\u05c2\u05c4\u05c5\u05c7\u0610-\u061a\u064b-\u065e\u0670\u06d6-\u06dc\u06de-\u06e4\u06e7\u06e8\u06ea-\u06ed\u0711\u0730-\u074a\u07a6-\u07b0\u07eb-\u07f3\u0816-\u0819\u081b-\u0823\u0825-\u0827\u0829-\u082d\u0900-\u0902\u093c\u0941-\u0948\u094d\u0951-\u0955\u0962\u0963\u0981\u09bc\u09be\u09c1-\u09c4\u09cd\u09d7\u09e2\u09e3\u0a01\u0a02\u0a3c\u0a41\u0a42\u0a47\u0a48\u0a4b-\u0a4d\u0a51\u0a70\u0a71\u0a75\u0a81\u0a82\u0abc\u0ac1-\u0ac5\u0ac7\u0ac8\u0acd\u0ae2\u0ae3\u0b01\u0b3c\u0b3e\u0b3f\u0b41-\u0b44\u0b4d\u0b56\u0b57\u0b62\u0b63\u0b82\u0bbe\u0bc0\u0bcd\u0bd7\u0c3e-\u0c40\u0c46-\u0c48\u0c4a-\u0c4d\u0c55\u0c56\u0c62\u0c63\u0cbc\u0cbf\u0cc2\u0cc6\u0ccc\u0ccd\u0cd5\u0cd6\u0ce2\u0ce3\u0d3e\u0d41-\u0d44\u0d4d\u0d57\u0d62\u0d63\u0dca\u0dcf\u0dd2-\u0dd4\u0dd6\u0ddf\u0e31\u0e34-\u0e3a\u0e47-\u0e4e\u0eb1\u0eb4-\u0eb9\u0ebb\u0ebc\u0ec8-\u0ecd\u0f18\u0f19\u0f35\u0f37\u0f39\u0f71-\u0f7e\u0f80-\u0f84\u0f86\u0f87\u0f90-\u0f97\u0f99-\u0fbc\u0fc6\u102d-\u1030\u1032-\u1037\u1039\u103a\u103d\u103e\u1058\u1059\u105e-\u1060\u1071-\u1074\u1082\u1085\u1086\u108d\u109d\u135f\u1712-\u1714\u1732-\u1734\u1752\u1753\u1772\u1773\u17b7-\u17bd\u17c6\u17c9-\u17d3\u17dd\u180b-\u180d\u18a9\u1920-\u1922\u1927\u1928\u1932\u1939-\u193b\u1a17\u1a18\u1a56\u1a58-\u1a5e\u1a60\u1a62\u1a65-\u1a6c\u1a73-\u1a7c\u1a7f\u1b00-\u1b03\u1b34\u1b36-\u1b3a\u1b3c\u1b42\u1b6b-\u1b73\u1b80\u1b81\u1ba2-\u1ba5\u1ba8\u1ba9\u1c2c-\u1c33\u1c36\u1c37\u1cd0-\u1cd2\u1cd4-\u1ce0\u1ce2-\u1ce8\u1ced\u1dc0-\u1de6\u1dfd-\u1dff\u200c\u200d\u20d0-\u20f0\u2cef-\u2cf1\u2de0-\u2dff\u302a-\u302f\u3099\u309a\ua66f-\ua672\ua67c\ua67d\ua6f0\ua6f1\ua802\ua806\ua80b\ua825\ua826\ua8c4\ua8e0-\ua8f1\ua926-\ua92d\ua947-\ua951\ua980-\ua982\ua9b3\ua9b6-\ua9b9\ua9bc\uaa29-\uaa2e\uaa31\uaa32\uaa35\uaa36\uaa43\uaa4c\uaab0\uaab2-\uaab4\uaab7\uaab8\uaabe\uaabf\uaac1\uabe5\uabe8\uabed\udc00-\udfff\ufb1e\ufe00-\ufe0f\ufe20-\ufe26\uff9e\uff9f]/;
  function isExtendingChar(ch) { return ch.charCodeAt(0) >= 768 && extendingChars.test(ch); }

  // DOM UTILITIES

  function elt(tag, content, className, style) {
    var e = document.createElement(tag);
    if (className) e.className = className;
    if (style) e.style.cssText = style;
    if (typeof content == "string") e.appendChild(document.createTextNode(content));
    else if (content) for (var i = 0; i < content.length; ++i) e.appendChild(content[i]);
    return e;
  }

  var range;
  if (document.createRange) range = function(node, start, end, endNode) {
    var r = document.createRange();
    r.setEnd(endNode || node, end);
    r.setStart(node, start);
    return r;
  };
  else range = function(node, start, end) {
    var r = document.body.createTextRange();
    try { r.moveToElementText(node.parentNode); }
    catch(e) { return r; }
    r.collapse(true);
    r.moveEnd("character", end);
    r.moveStart("character", start);
    return r;
  };

  function removeChildren(e) {
    for (var count = e.childNodes.length; count > 0; --count)
      e.removeChild(e.firstChild);
    return e;
  }

  function removeChildrenAndAdd(parent, e) {
    return removeChildren(parent).appendChild(e);
  }

  var contains = CodeMirror.contains = function(parent, child) {
    if (child.nodeType == 3) // Android browser always returns false when child is a textnode
      child = child.parentNode;
    if (parent.contains)
      return parent.contains(child);
    do {
      if (child.nodeType == 11) child = child.host;
      if (child == parent) return true;
    } while (child = child.parentNode);
  };

  function activeElt() { return document.activeElement; }
  // Older versions of IE throws unspecified error when touching
  // document.activeElement in some cases (during loading, in iframe)
  if (ie && ie_version < 11) activeElt = function() {
    try { return document.activeElement; }
    catch(e) { return document.body; }
  };

  function classTest(cls) { return new RegExp("(^|\\s)" + cls + "(?:$|\\s)\\s*"); }
  var rmClass = CodeMirror.rmClass = function(node, cls) {
    var current = node.className;
    var match = classTest(cls).exec(current);
    if (match) {
      var after = current.slice(match.index + match[0].length);
      node.className = current.slice(0, match.index) + (after ? match[1] + after : "");
    }
  };
  var addClass = CodeMirror.addClass = function(node, cls) {
    var current = node.className;
    if (!classTest(cls).test(current)) node.className += (current ? " " : "") + cls;
  };
  function joinClasses(a, b) {
    var as = a.split(" ");
    for (var i = 0; i < as.length; i++)
      if (as[i] && !classTest(as[i]).test(b)) b += " " + as[i];
    return b;
  }

  // WINDOW-WIDE EVENTS

  // These must be handled carefully, because naively registering a
  // handler for each editor will cause the editors to never be
  // garbage collected.

  function forEachCodeMirror(f) {
    if (!document.body.getElementsByClassName) return;
    var byClass = document.body.getElementsByClassName("CodeMirror");
    for (var i = 0; i < byClass.length; i++) {
      var cm = byClass[i].CodeMirror;
      if (cm) f(cm);
    }
  }

  var globalsRegistered = false;
  function ensureGlobalHandlers() {
    if (globalsRegistered) return;
    registerGlobalHandlers();
    globalsRegistered = true;
  }
  function registerGlobalHandlers() {
    // When the window resizes, we need to refresh active editors.
    var resizeTimer;
    on(window, "resize", function() {
      if (resizeTimer == null) resizeTimer = setTimeout(function() {
        resizeTimer = null;
        forEachCodeMirror(onResize);
      }, 100);
    });
    // When the window loses focus, we want to show the editor as blurred
    on(window, "blur", function() {
      forEachCodeMirror(onBlur);
    });
  }

  // FEATURE DETECTION

  // Detect drag-and-drop
  var dragAndDrop = function() {
    // There is *some* kind of drag-and-drop support in IE6-8, but I
    // couldn't get it to work yet.
    if (ie && ie_version < 9) return false;
    var div = elt('div');
    return "draggable" in div || "dragDrop" in div;
  }();

  var zwspSupported;
  function zeroWidthElement(measure) {
    if (zwspSupported == null) {
      var test = elt("span", "\u200b");
      removeChildrenAndAdd(measure, elt("span", [test, document.createTextNode("x")]));
      if (measure.firstChild.offsetHeight != 0)
        zwspSupported = test.offsetWidth <= 1 && test.offsetHeight > 2 && !(ie && ie_version < 8);
    }
    var node = zwspSupported ? elt("span", "\u200b") :
      elt("span", "\u00a0", null, "display: inline-block; width: 1px; margin-right: -1px");
    node.setAttribute("cm-text", "");
    return node;
  }

  // Feature-detect IE's crummy client rect reporting for bidi text
  var badBidiRects;
  function hasBadBidiRects(measure) {
    if (badBidiRects != null) return badBidiRects;
    var txt = removeChildrenAndAdd(measure, document.createTextNode("A\u062eA"));
    var r0 = range(txt, 0, 1).getBoundingClientRect();
    if (!r0 || r0.left == r0.right) return false; // Safari returns null in some cases (#2780)
    var r1 = range(txt, 1, 2).getBoundingClientRect();
    return badBidiRects = (r1.right - r0.right < 3);
  }

  // See if "".split is the broken IE version, if so, provide an
  // alternative way to split lines.
  var splitLines = CodeMirror.splitLines = "\n\nb".split(/\n/).length != 3 ? function(string) {
    var pos = 0, result = [], l = string.length;
    while (pos <= l) {
      var nl = string.indexOf("\n", pos);
      if (nl == -1) nl = string.length;
      var line = string.slice(pos, string.charAt(nl - 1) == "\r" ? nl - 1 : nl);
      var rt = line.indexOf("\r");
      if (rt != -1) {
        result.push(line.slice(0, rt));
        pos += rt + 1;
      } else {
        result.push(line);
        pos = nl + 1;
      }
    }
    return result;
  } : function(string){return string.split(/\r\n?|\n/);};

  var hasSelection = window.getSelection ? function(te) {
    try { return te.selectionStart != te.selectionEnd; }
    catch(e) { return false; }
  } : function(te) {
    try {var range = te.ownerDocument.selection.createRange();}
    catch(e) {}
    if (!range || range.parentElement() != te) return false;
    return range.compareEndPoints("StartToEnd", range) != 0;
  };

  var hasCopyEvent = (function() {
    var e = elt("div");
    if ("oncopy" in e) return true;
    e.setAttribute("oncopy", "return;");
    return typeof e.oncopy == "function";
  })();

  var badZoomedRects = null;
  function hasBadZoomedRects(measure) {
    if (badZoomedRects != null) return badZoomedRects;
    var node = removeChildrenAndAdd(measure, elt("span", "x"));
    var normal = node.getBoundingClientRect();
    var fromRange = range(node, 0, 1).getBoundingClientRect();
    return badZoomedRects = Math.abs(normal.left - fromRange.left) > 1;
  }

  // KEY NAMES

  var keyNames = {3: "Enter", 8: "Backspace", 9: "Tab", 13: "Enter", 16: "Shift", 17: "Ctrl", 18: "Alt",
                  19: "Pause", 20: "CapsLock", 27: "Esc", 32: "Space", 33: "PageUp", 34: "PageDown", 35: "End",
                  36: "Home", 37: "Left", 38: "Up", 39: "Right", 40: "Down", 44: "PrintScrn", 45: "Insert",
                  46: "Delete", 59: ";", 61: "=", 91: "Mod", 92: "Mod", 93: "Mod", 107: "=", 109: "-", 127: "Delete",
                  173: "-", 186: ";", 187: "=", 188: ",", 189: "-", 190: ".", 191: "/", 192: "`", 219: "[", 220: "\\",
                  221: "]", 222: "'", 63232: "Up", 63233: "Down", 63234: "Left", 63235: "Right", 63272: "Delete",
                  63273: "Home", 63275: "End", 63276: "PageUp", 63277: "PageDown", 63302: "Insert"};
  CodeMirror.keyNames = keyNames;
  (function() {
    // Number keys
    for (var i = 0; i < 10; i++) keyNames[i + 48] = keyNames[i + 96] = String(i);
    // Alphabetic keys
    for (var i = 65; i <= 90; i++) keyNames[i] = String.fromCharCode(i);
    // Function keys
    for (var i = 1; i <= 12; i++) keyNames[i + 111] = keyNames[i + 63235] = "F" + i;
  })();

  // BIDI HELPERS

  function iterateBidiSections(order, from, to, f) {
    if (!order) return f(from, to, "ltr");
    var found = false;
    for (var i = 0; i < order.length; ++i) {
      var part = order[i];
      if (part.from < to && part.to > from || from == to && part.to == from) {
        f(Math.max(part.from, from), Math.min(part.to, to), part.level == 1 ? "rtl" : "ltr");
        found = true;
      }
    }
    if (!found) f(from, to, "ltr");
  }

  function bidiLeft(part) { return part.level % 2 ? part.to : part.from; }
  function bidiRight(part) { return part.level % 2 ? part.from : part.to; }

  function lineLeft(line) { var order = getOrder(line); return order ? bidiLeft(order[0]) : 0; }
  function lineRight(line) {
    var order = getOrder(line);
    if (!order) return line.text.length;
    return bidiRight(lst(order));
  }

  function lineStart(cm, lineN) {
    var line = getLine(cm.doc, lineN);
    var visual = visualLine(line);
    if (visual != line) lineN = lineNo(visual);
    var order = getOrder(visual);
    var ch = !order ? 0 : order[0].level % 2 ? lineRight(visual) : lineLeft(visual);
    return Pos(lineN, ch);
  }
  function lineEnd(cm, lineN) {
    var merged, line = getLine(cm.doc, lineN);
    while (merged = collapsedSpanAtEnd(line)) {
      line = merged.find(1, true).line;
      lineN = null;
    }
    var order = getOrder(line);
    var ch = !order ? line.text.length : order[0].level % 2 ? lineLeft(line) : lineRight(line);
    return Pos(lineN == null ? lineNo(line) : lineN, ch);
  }
  function lineStartSmart(cm, pos) {
    var start = lineStart(cm, pos.line);
    var line = getLine(cm.doc, start.line);
    var order = getOrder(line);
    if (!order || order[0].level == 0) {
      var firstNonWS = Math.max(0, line.text.search(/\S/));
      var inWS = pos.line == start.line && pos.ch <= firstNonWS && pos.ch;
      return Pos(start.line, inWS ? 0 : firstNonWS);
    }
    return start;
  }

  function compareBidiLevel(order, a, b) {
    var linedir = order[0].level;
    if (a == linedir) return true;
    if (b == linedir) return false;
    return a < b;
  }
  var bidiOther;
  function getBidiPartAt(order, pos) {
    bidiOther = null;
    for (var i = 0, found; i < order.length; ++i) {
      var cur = order[i];
      if (cur.from < pos && cur.to > pos) return i;
      if ((cur.from == pos || cur.to == pos)) {
        if (found == null) {
          found = i;
        } else if (compareBidiLevel(order, cur.level, order[found].level)) {
          if (cur.from != cur.to) bidiOther = found;
          return i;
        } else {
          if (cur.from != cur.to) bidiOther = i;
          return found;
        }
      }
    }
    return found;
  }

  function moveInLine(line, pos, dir, byUnit) {
    if (!byUnit) return pos + dir;
    do pos += dir;
    while (pos > 0 && isExtendingChar(line.text.charAt(pos)));
    return pos;
  }

  // This is needed in order to move 'visually' through bi-directional
  // text -- i.e., pressing left should make the cursor go left, even
  // when in RTL text. The tricky part is the 'jumps', where RTL and
  // LTR text touch each other. This often requires the cursor offset
  // to move more than one unit, in order to visually move one unit.
  function moveVisually(line, start, dir, byUnit) {
    var bidi = getOrder(line);
    if (!bidi) return moveLogically(line, start, dir, byUnit);
    var pos = getBidiPartAt(bidi, start), part = bidi[pos];
    var target = moveInLine(line, start, part.level % 2 ? -dir : dir, byUnit);

    for (;;) {
      if (target > part.from && target < part.to) return target;
      if (target == part.from || target == part.to) {
        if (getBidiPartAt(bidi, target) == pos) return target;
        part = bidi[pos += dir];
        return (dir > 0) == part.level % 2 ? part.to : part.from;
      } else {
        part = bidi[pos += dir];
        if (!part) return null;
        if ((dir > 0) == part.level % 2)
          target = moveInLine(line, part.to, -1, byUnit);
        else
          target = moveInLine(line, part.from, 1, byUnit);
      }
    }
  }

  function moveLogically(line, start, dir, byUnit) {
    var target = start + dir;
    if (byUnit) while (target > 0 && isExtendingChar(line.text.charAt(target))) target += dir;
    return target < 0 || target > line.text.length ? null : target;
  }

  // Bidirectional ordering algorithm
  // See http://unicode.org/reports/tr9/tr9-13.html for the algorithm
  // that this (partially) implements.

  // One-char codes used for character types:
  // L (L):   Left-to-Right
  // R (R):   Right-to-Left
  // r (AL):  Right-to-Left Arabic
  // 1 (EN):  European Number
  // + (ES):  European Number Separator
  // % (ET):  European Number Terminator
  // n (AN):  Arabic Number
  // , (CS):  Common Number Separator
  // m (NSM): Non-Spacing Mark
  // b (BN):  Boundary Neutral
  // s (B):   Paragraph Separator
  // t (S):   Segment Separator
  // w (WS):  Whitespace
  // N (ON):  Other Neutrals

  // Returns null if characters are ordered as they appear
  // (left-to-right), or an array of sections ({from, to, level}
  // objects) in the order in which they occur visually.
  var bidiOrdering = (function() {
    // Character types for codepoints 0 to 0xff
    var lowTypes = "bbbbbbbbbtstwsbbbbbbbbbbbbbbssstwNN%%%NNNNNN,N,N1111111111NNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNbbbbbbsbbbbbbbbbbbbbbbbbbbbbbbbbb,N%%%%NNNNLNNNNN%%11NLNNN1LNNNNNLLLLLLLLLLLLLLLLLLLLLLLNLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLN";
    // Character types for codepoints 0x600 to 0x6ff
    var arabicTypes = "rrrrrrrrrrrr,rNNmmmmmmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmrrrrrrrnnnnnnnnnn%nnrrrmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmmmmmmNmmmm";
    function charType(code) {
      if (code <= 0xf7) return lowTypes.charAt(code);
      else if (0x590 <= code && code <= 0x5f4) return "R";
      else if (0x600 <= code && code <= 0x6ed) return arabicTypes.charAt(code - 0x600);
      else if (0x6ee <= code && code <= 0x8ac) return "r";
      else if (0x2000 <= code && code <= 0x200b) return "w";
      else if (code == 0x200c) return "b";
      else return "L";
    }

    var bidiRE = /[\u0590-\u05f4\u0600-\u06ff\u0700-\u08ac]/;
    var isNeutral = /[stwN]/, isStrong = /[LRr]/, countsAsLeft = /[Lb1n]/, countsAsNum = /[1n]/;
    // Browsers seem to always treat the boundaries of block elements as being L.
    var outerType = "L";

    function BidiSpan(level, from, to) {
      this.level = level;
      this.from = from; this.to = to;
    }

    return function(str) {
      if (!bidiRE.test(str)) return false;
      var len = str.length, types = [];
      for (var i = 0, type; i < len; ++i)
        types.push(type = charType(str.charCodeAt(i)));

      // W1. Examine each non-spacing mark (NSM) in the level run, and
      // change the type of the NSM to the type of the previous
      // character. If the NSM is at the start of the level run, it will
      // get the type of sor.
      for (var i = 0, prev = outerType; i < len; ++i) {
        var type = types[i];
        if (type == "m") types[i] = prev;
        else prev = type;
      }

      // W2. Search backwards from each instance of a European number
      // until the first strong type (R, L, AL, or sor) is found. If an
      // AL is found, change the type of the European number to Arabic
      // number.
      // W3. Change all ALs to R.
      for (var i = 0, cur = outerType; i < len; ++i) {
        var type = types[i];
        if (type == "1" && cur == "r") types[i] = "n";
        else if (isStrong.test(type)) { cur = type; if (type == "r") types[i] = "R"; }
      }

      // W4. A single European separator between two European numbers
      // changes to a European number. A single common separator between
      // two numbers of the same type changes to that type.
      for (var i = 1, prev = types[0]; i < len - 1; ++i) {
        var type = types[i];
        if (type == "+" && prev == "1" && types[i+1] == "1") types[i] = "1";
        else if (type == "," && prev == types[i+1] &&
                 (prev == "1" || prev == "n")) types[i] = prev;
        prev = type;
      }

      // W5. A sequence of European terminators adjacent to European
      // numbers changes to all European numbers.
      // W6. Otherwise, separators and terminators change to Other
      // Neutral.
      for (var i = 0; i < len; ++i) {
        var type = types[i];
        if (type == ",") types[i] = "N";
        else if (type == "%") {
          for (var end = i + 1; end < len && types[end] == "%"; ++end) {}
          var replace = (i && types[i-1] == "!") || (end < len && types[end] == "1") ? "1" : "N";
          for (var j = i; j < end; ++j) types[j] = replace;
          i = end - 1;
        }
      }

      // W7. Search backwards from each instance of a European number
      // until the first strong type (R, L, or sor) is found. If an L is
      // found, then change the type of the European number to L.
      for (var i = 0, cur = outerType; i < len; ++i) {
        var type = types[i];
        if (cur == "L" && type == "1") types[i] = "L";
        else if (isStrong.test(type)) cur = type;
      }

      // N1. A sequence of neutrals takes the direction of the
      // surrounding strong text if the text on both sides has the same
      // direction. European and Arabic numbers act as if they were R in
      // terms of their influence on neutrals. Start-of-level-run (sor)
      // and end-of-level-run (eor) are used at level run boundaries.
      // N2. Any remaining neutrals take the embedding direction.
      for (var i = 0; i < len; ++i) {
        if (isNeutral.test(types[i])) {
          for (var end = i + 1; end < len && isNeutral.test(types[end]); ++end) {}
          var before = (i ? types[i-1] : outerType) == "L";
          var after = (end < len ? types[end] : outerType) == "L";
          var replace = before || after ? "L" : "R";
          for (var j = i; j < end; ++j) types[j] = replace;
          i = end - 1;
        }
      }

      // Here we depart from the documented algorithm, in order to avoid
      // building up an actual levels array. Since there are only three
      // levels (0, 1, 2) in an implementation that doesn't take
      // explicit embedding into account, we can build up the order on
      // the fly, without following the level-based algorithm.
      var order = [], m;
      for (var i = 0; i < len;) {
        if (countsAsLeft.test(types[i])) {
          var start = i;
          for (++i; i < len && countsAsLeft.test(types[i]); ++i) {}
          order.push(new BidiSpan(0, start, i));
        } else {
          var pos = i, at = order.length;
          for (++i; i < len && types[i] != "L"; ++i) {}
          for (var j = pos; j < i;) {
            if (countsAsNum.test(types[j])) {
              if (pos < j) order.splice(at, 0, new BidiSpan(1, pos, j));
              var nstart = j;
              for (++j; j < i && countsAsNum.test(types[j]); ++j) {}
              order.splice(at, 0, new BidiSpan(2, nstart, j));
              pos = j;
            } else ++j;
          }
          if (pos < i) order.splice(at, 0, new BidiSpan(1, pos, i));
        }
      }
      if (order[0].level == 1 && (m = str.match(/^\s+/))) {
        order[0].from = m[0].length;
        order.unshift(new BidiSpan(0, 0, m[0].length));
      }
      if (lst(order).level == 1 && (m = str.match(/\s+$/))) {
        lst(order).to -= m[0].length;
        order.push(new BidiSpan(0, len - m[0].length, len));
      }
      if (order[0].level == 2)
        order.unshift(new BidiSpan(1, order[0].to, order[0].to));
      if (order[0].level != lst(order).level)
        order.push(new BidiSpan(order[0].level, len, len));

      return order;
    };
  })();

  // THE END

  CodeMirror.version = "5.4.1";

  return CodeMirror;
});;
(function ($) {
    /**
     * 公式编辑控件
     * @class BI.FormulaEditor
     * @extends BI.Widget
     */
    BI.FormulaEditor = BI.inherit(BI.Single, {
        _defaultConfig: function () {
            return $.extend(BI.FormulaEditor.superclass._defaultConfig.apply(), {
                baseCls: 'bi-formula-editor',
                watermark: '',
                value: '',
                fieldTextValueMap: {},
                showHint: true
            });
        },
        _init: function () {
            BI.FormulaEditor.superclass._init.apply(this, arguments);
            var o = this.options, self = this;
            this.editor = CodeMirror(this.element[0], {
                textWrapping: true,
                lineWrapping: true,
                lineNumbers: false,
                mode: 'formula'
            });
            this.editor.on("change", function (cm, change) {
                self._checkWaterMark();
                if(o.showHint){
                    CodeMirror.showHint(cm, CodeMirror.formulaHint, {completeSingle: false});
                }
                BI.nextTick(function () {
                    self.fireEvent(BI.FormulaEditor.EVENT_CHANGE)
                });
            });

            this.editor.on("focus", function () {
                self._checkWaterMark();
                self.fireEvent(BI.FormulaEditor.EVENT_FOCUS);
            });

            this.editor.on("blur", function () {
                self.fireEvent(BI.FormulaEditor.EVENT_BLUR);
            });


            if (BI.isKey(o.value)) {
                self.setValue(o.value);
            }

            if (BI.isKey(this.options.watermark)) {
                var self = this;
                this.watermark = BI.createWidget({
                    type: "bi.label",
                    cls: "bi-water-mark",
                    text: this.options.watermark,
                    whiteSpace: "nowrap",
                    textAlign: "left"
                });
                BI.createWidget({
                    type: "bi.absolute",
                    element: self,
                    items: [{
                        el: self.watermark,
                        left: 0,
                        top: 0
                    }]
                });

                this.watermark.element.bind(
                    "mousedown", function (e) {
                        self.insertString("");
                        self.editor.focus();
                        e.stopEvent();
                    }
                );
                this.watermark.element.bind("click", function (e) {
                    self.editor.focus();
                    e.stopEvent();
                });
                this.watermark.element.css({
                    position: "absolute",
                    left: 3,
                    right: 3,
                    top: 6,
                    bottom: 0
                });
            }
        },

        _checkWaterMark: function () {
            var o = this.options;
            if (!this.disabledWarterMark && BI.isEmptyString(this.editor.getValue()) && BI.isKey(o.watermark)) {
                this.watermark && this.watermark.visible();
            } else {
                this.watermark && this.watermark.invisible();
            }
        },

        disableWarterMark: function () {
            this.disabledWarterMark = true;
            this._checkWaterMark();
        },

        focus: function() {
            this.editor.focus();
        },

        /**
         * 添加字段
         * @param field
         */
        insertField: function (field) {
            var from = this.editor.getCursor();
            this.editor.replaceSelection(field);
            var to = this.editor.getCursor();
            this.editor.markText(from, to, {className: 'fieldName', atomic: true, startStyle : "start", endStyle:"end"});
            this.editor.replaceSelection(" ");
            this.editor.focus();
        },

        insertFunction: function (fn) {
            var from = this.editor.getCursor();
            this.editor.replaceSelection(fn);
            var to = this.editor.getCursor();
            this.editor.markText(from, to, {className: "#function", atomic: true});
            this.editor.replaceSelection("() ");
            to = this.editor.getCursor();
            to.ch = to.ch - 2;
            this.editor.setCursor(to);
            this.editor.focus();
        },
        insertOperator: function (op) {
            var from = this.editor.getCursor();
            this.editor.replaceSelection(op);
            var to = this.editor.getCursor();
            this.editor.markText(from, to, {className: "%operator", atomic: true});
            this.editor.replaceSelection(" ");
            this.editor.focus();
        },

        setFunction: function (v) {
            var from = this.editor.getCursor();
            this.editor.replaceSelection(v);
            var to = this.editor.getCursor();
            this.editor.markText(from, to, {className: "#function", atomic: true});
        },

        insertString: function (str) {
            this.editor.replaceSelection(str);
            this.editor.focus();
        },

        getFormulaString: function () {
            return this.editor.getValue();
        },

        getUsedFields: function () {
            var fieldMap = this.options.fieldTextValueMap;
            var fields = [];
            this.editor.getValue(true, function (line) {
                var value = line.text;
                _.forEach(line.markedSpans, function (i, ms) {
                    switch (i.marker.className) {
                        case "fieldName":
                            var dId = fieldMap[value.substr(i.from, i.to - i.from)];
                            if (!fields.contains(dId)) {
                                fields.push(dId);
                            }

                    }
                });
            });
            return fields;
        },

        getCheckString: function () {
            return this.editor.getValue(true, function (line) {
                var rawText = line.text, value = line.text, num = 0;
                value.text = rawText;
                _.forEach(line.markedSpans, function (i, ms) {

                    switch (i.marker.className) {
                        case "fieldName":
                            var fieldNameLength = i.to - i.from;
                            value = value.substr(0, i.from + num) + "$a" + value.substr(i.to + num, value.length);
                            num = num + 2 - fieldNameLength;
                            break;
                    }

                });
                return value;
            });
        },

        getValue: function () {
            var fieldMap = this.options.fieldTextValueMap;
            return this.editor.getValue("\n", function (line) {
                var rawText = line.text, value = line.text, num = 0;
                value.text = rawText;
                _.forEach(line.markedSpans, function (i, ms) {
                    switch (i.marker.className) {
                        case "fieldName":
                            var fieldNameLength = i.to - i.from;
                            var fieldId = fieldMap[value.substr(i.from + num, fieldNameLength)];
                            value = value.substr(0, i.from + num) + "$\{" + fieldMap[value.substr(i.from + num, fieldNameLength)] + "\}" + value.substr(i.to + num, value.length);
                            num += fieldId.length - fieldNameLength + 3;
                            break;
                    }
                });
                return value;
            });
        },

        setValue: function (value) {
            this.editor.setValue(value);
        },

        setFieldTextValueMap: function (fieldTextValueMap) {
            this.options.fieldTextValueMap = fieldTextValueMap;
        },

        refresh: function () {
            var self = this;
            BI.nextTick(function () {
                self.editor.refresh();
            });
        }

    });
    BI.FormulaEditor.EVENT_CHANGE = "EVENT_CHANGE";
    BI.FormulaEditor.EVENT_BLUR = "EVENT_BLUR";
    BI.FormulaEditor.EVENT_FOCUS = "EVENT_FOCUS";
    $.shortcut("bi.formula", BI.FormulaEditor);
})(jQuery);
/**
 * z-index在1亿层级
 * 弹出提示消息框，用于模拟阻塞操作（通过回调函数实现）
 * @class BI.Msg
 */
$.extend(BI, {
    Msg: function () {

        var messageShow, $mask, $pop;

        return {
            alert: function (title, message, callback) {
                this._show(false, title, message, callback);
            },
            confirm: function (title, message, callback, min_width) {
                this._show(true, title, message, callback);
            },
            prompt: function (title, message, value, callback, min_width) {
                BI.Msg.prompt(title, message, value, callback, min_width);
            },
            toast: function (message, level, context) {
                context = context || $("body");
                var toast = BI.createWidget({
                    type: "bi.toast",
                    level: level,
                    text: message
                });
                BI.createWidget({
                    type: "bi.absolute",
                    element: context,
                    items: [{
                        el: toast,
                        left: "50%",
                        top: 0
                    }]
                });
                if (toast.element.outerWidth() > context.outerWidth()) {
                    toast.setWidth(context.width());
                }
                toast.element.css({"margin-left": -1 * toast.element.outerWidth() / 2});
                toast.invisible();
                toast.element.slideDown(500, function () {
                    BI.delay(function () {
                        toast.element.slideUp(500, function () {
                            toast.destroy();
                        })
                    }, 5000)
                })
            },
            _show: function (hasCancel, title, message, callback) {
                $mask = $('<div class="bi-message-mask">').css({
                    position: 'absolute',
                    'zIndex': BI.zIndex_tip - 2,
                    top: 0,
                    left: 0,
                    right: 0,
                    bottom: 0,
                    opacity: 0.5
                }).appendTo('body');
                $pop = $('<div class="bi-message-depend">').css({
                    position: 'absolute',
                    'zIndex': BI.zIndex_tip - 1,
                    top: 0,
                    left: 0,
                    right: 0,
                    bottom: 0
                }).appendTo('body');
                var close = function () {
                    messageShow.destroy();
                    $mask.remove();
                };
                var controlItems = [];
                if (hasCancel === true) {
                    controlItems.push({
                        el: {
                            type: 'bi.button',
                            text: BI.i18nText("BI-Basic_Cancel"),
                            height: 30,
                            level: 'ignore',
                            handler: function () {
                                close();
                                if (BI.isFunction(callback)) {
                                    callback.apply(null, [false]);
                                }
                            }
                        }
                    });
                }
                controlItems.push({
                    el: {
                        type: 'bi.button',
                        text: BI.i18nText("BI-Basic_OK"),
                        height: 30,
                        handler: function () {
                            close();
                            if (BI.isFunction(callback)) {
                                callback.apply(null, [true]);
                            }
                        }
                    }
                });
                var conf = {
                    element: $pop,
                    type: 'bi.center_adapt',
                    items: [
                        {
                            type: 'bi.border',
                            cls: 'bi-message-content',
                            items: {
                                'north': {
                                    el: {
                                        type: 'bi.border',
                                        cls: 'bi-message-title',
                                        items: {
                                            center: {
                                                el: {
                                                    type: 'bi.label',
                                                    text: title || BI.i18nText("BI-Basic_Prompt"),
                                                    textAlign: 'left',
                                                    hgap: 20,
                                                    height: 50
                                                }
                                            },
                                            east: {
                                                el: {
                                                    type: 'bi.icon_button',
                                                    cls: 'bi-message-close close-font',
//                                                    height: 50,
                                                    handler: function () {
                                                        close();
                                                    }
                                                },
                                                width: 60
                                            }
                                        }
                                    },
                                    height: 50
                                },
                                'center': {
                                    el: {
                                        type: "bi.text",
                                        cls: "bi-message-text",
                                        tgap: 60,
                                        hgap: 20,
                                        lineHeight: 30,
                                        whiteSpace: "normal",
                                        text: message
                                    }
                                },
                                'south': {
                                    el: {
                                        type: "bi.absolute",
                                        items: [{
                                            el: {
                                                type: 'bi.right_vertical_adapt',
                                                hgap: 5,
                                                items: controlItems
                                            },
                                            top: 0,
                                            left: 20,
                                            right: 20,
                                            bottom: 0
                                        }]

                                    },
                                    height: 60
                                }
                            },
                            width: 400,
                            height: 300
                        }
                    ]
                };

                messageShow = BI.createWidget(conf);
            }
        };
    }()
});/**
 * Grid
 *
 * Created by GUY on 2016/1/11.
 * @class BI.Grid
 * @extends BI.Widget
 */
BI.Grid = BI.inherit(BI.Widget, {
    _defaultConfig: function () {
        return BI.extend(BI.Grid.superclass._defaultConfig.apply(this, arguments), {
            baseCls: "bi-grid",
            width: 400,
            height: 300,
            overflowX: true,
            overflowY: true,
            overscanColumnCount: 0,
            overscanRowCount: 0,
            rowHeightGetter: BI.emptyFn,
            columnWidthGetter: BI.emptyFn,
            estimatedColumnSize: 100,
            estimatedRowSize: 30,
            scrollLeft: 0,
            scrollTop: 0,
            items: []
        });
    },

    _init: function () {
        BI.Grid.superclass._init.apply(this, arguments);
        var self = this, o = this.options;
        this.renderedCells = [];
        this.renderedKeys = [];
        this._scrollLock = false;
        this._debounceRelease = BI.debounce(function () {
            self._scrollLock = false;
        }, 150);
        this.container = BI.createWidget({
            type: "bi.absolute"
        });
        this.element.scroll(function () {
            if (self._scrollLock === true) {
                return;
            }
            o.scrollLeft = self.element.scrollLeft();
            o.scrollTop = self.element.scrollTop();
            self._calculateChildrenToRender();
            self.fireEvent(BI.Grid.EVENT_SCROLL, {
                scrollLeft: o.scrollLeft,
                scrollTop: o.scrollTop
            });
        });
        BI.createWidget({
            type: "bi.vertical",
            element: this,
            scrollable: o.overflowX === true && o.overflowY === true,
            scrolly: o.overflowX === false && o.overflowY === true,
            scrollx: o.overflowX === true && o.overflowY === false,
            items: [this.container]
        });
        if (o.items.length > 0) {
            this._populate();
        }
        if (o.scrollLeft !== 0 || o.scrollTop !== 0) {
            BI.nextTick(function () {
                self.element.scrollTop(o.scrollTop);
                self.element.scrollLeft(o.scrollLeft);
            });
        }
    },

    _getOverscanIndices: function (cellCount, overscanCellsCount, startIndex, stopIndex) {
        return {
            overscanStartIndex: Math.max(0, startIndex - overscanCellsCount),
            overscanStopIndex: Math.min(cellCount - 1, stopIndex + overscanCellsCount)
        }
    },

    _calculateChildrenToRender: function () {
        var self = this, o = this.options;

        var width = o.width, height = o.height, scrollLeft = BI.clamp(o.scrollLeft, 0, this._getMaxScrollLeft()), scrollTop = BI.clamp(o.scrollTop, 0, this._getMaxScrollTop()),
            overscanColumnCount = o.overscanColumnCount, overscanRowCount = o.overscanRowCount;

        if (height > 0 && width > 0) {
            var visibleColumnIndices = this._columnSizeAndPositionManager.getVisibleCellRange(width, scrollLeft);
            var visibleRowIndices = this._rowSizeAndPositionManager.getVisibleCellRange(height, scrollTop);

            var horizontalOffsetAdjustment = this._columnSizeAndPositionManager.getOffsetAdjustment(width, scrollLeft);
            var verticalOffsetAdjustment = this._rowSizeAndPositionManager.getOffsetAdjustment(height, scrollTop);

            this._renderedColumnStartIndex = visibleColumnIndices.start;
            this._renderedColumnStopIndex = visibleColumnIndices.stop;
            this._renderedRowStartIndex = visibleRowIndices.start;
            this._renderedRowStopIndex = visibleRowIndices.stop;

            var overscanColumnIndices = this._getOverscanIndices(this.columnCount, overscanColumnCount, this._renderedColumnStartIndex, this._renderedColumnStopIndex)

            var overscanRowIndices = this._getOverscanIndices(this.rowCount, overscanRowCount, this._renderedRowStartIndex, this._renderedRowStopIndex);

            var columnStartIndex = overscanColumnIndices.overscanStartIndex;
            var columnStopIndex = overscanColumnIndices.overscanStopIndex;
            var rowStartIndex = overscanRowIndices.overscanStartIndex;
            var rowStopIndex = overscanRowIndices.overscanStopIndex;

            var renderedCells = [], renderedKeys = [];

            for (var rowIndex = rowStartIndex; rowIndex <= rowStopIndex; rowIndex++) {
                var rowDatum = this._rowSizeAndPositionManager.getSizeAndPositionOfCell(rowIndex);

                for (var columnIndex = columnStartIndex; columnIndex <= columnStopIndex; columnIndex++) {
                    var key = [rowIndex, columnIndex];
                    var columnDatum = this._columnSizeAndPositionManager.getSizeAndPositionOfCell(columnIndex);

                    var index = BI.deepIndexOf(this.renderedKeys, key);
                    if (index > -1) {
                        if (columnDatum.size !== this.renderedCells[index]._width) {
                            this.renderedCells[index]._width = columnDatum.size;
                            this.renderedCells[index].el.setWidth(columnDatum.size);
                        }
                        if (rowDatum.size !== this.renderedCells[index]._height) {
                            this.renderedCells[index]._height = rowDatum.size;
                            this.renderedCells[index].el.setHeight(rowDatum.size);
                        }
                        if (this.renderedCells[index].left !== columnDatum.offset + horizontalOffsetAdjustment) {
                            this.renderedCells[index].el.element.css("left", (columnDatum.offset + horizontalOffsetAdjustment) + "px");
                        }
                        if (this.renderedCells[index].top !== rowDatum.offset + verticalOffsetAdjustment) {
                            this.renderedCells[index].el.element.css("top", (rowDatum.offset + verticalOffsetAdjustment) + "px");
                        }
                        renderedCells.push(this.renderedCells[index]);
                    } else {
                        var child = BI.createWidget(BI.extend({
                            type: "bi.label",
                            width: columnDatum.size,
                            height: rowDatum.size
                        }, o.items[rowIndex][columnIndex], {
                            cls: (o.items[rowIndex][columnIndex].cls || "") + " grid-cell" + (rowIndex === 0 ? " first-row" : "") + (columnIndex === 0 ? " first-col" : ""),
                            _rowIndex: rowIndex,
                            _columnIndex: columnIndex,
                            _left: columnDatum.offset + horizontalOffsetAdjustment,
                            _top: rowDatum.offset + verticalOffsetAdjustment
                        }));
                        renderedCells.push({
                            el: child,
                            left: columnDatum.offset + horizontalOffsetAdjustment,
                            top: rowDatum.offset + verticalOffsetAdjustment,
                            _width: columnDatum.size,
                            _height: rowDatum.size
                        });
                    }
                    renderedKeys.push(key);
                }
            }
            //已存在的， 需要添加的和需要删除的
            var existSet = {}, addSet = {}, deleteArray = [];
            BI.each(renderedKeys, function (i, key) {
                if (BI.deepContains(self.renderedKeys, key)) {
                    existSet[i] = key;
                } else {
                    addSet[i] = key;
                }
            });
            BI.each(this.renderedKeys, function (i, key) {
                if (BI.deepContains(existSet, key)) {
                    return;
                }
                if (BI.deepContains(addSet, key)) {
                    return;
                }
                deleteArray.push(i);
            });
            BI.each(deleteArray, function (i, index) {
                self.renderedCells[index].el.destroy();
            });
            var addedItems = [];
            BI.each(addSet, function (index) {
                addedItems.push(renderedCells[index])
            });
            BI.createWidget({
                type: "bi.absolute",
                element: this.container,
                items: addedItems
            });
            this.renderedCells = renderedCells;
            this.renderedKeys = renderedKeys;
        }
    },

    _getMaxScrollLeft: function () {
        return Math.max(0, this._columnSizeAndPositionManager.getTotalSize() - this.options.width + (this.options.overflowX ? BI.DOM.getScrollWidth() : 0));
    },

    _getMaxScrollTop: function () {
        return Math.max(0, this._rowSizeAndPositionManager.getTotalSize() - this.options.height + (this.options.overflowY ? BI.DOM.getScrollWidth() : 0));
    },

    _populate: function () {
        var self = this, o = this.options;
        if (o.items.length > 0) {
            this.columnCount = o.items[0].length;
            this.rowCount = o.items.length;
            this.container.setWidth(this.columnCount * o.estimatedColumnSize);
            this.container.setHeight(this.rowCount * o.estimatedRowSize);

            this._columnSizeAndPositionManager = new BI.ScalingCellSizeAndPositionManager(this.columnCount, o.columnWidthGetter, o.estimatedColumnSize);
            this._rowSizeAndPositionManager = new BI.ScalingCellSizeAndPositionManager(this.rowCount, o.rowHeightGetter, o.estimatedRowSize);

            this._calculateChildrenToRender();
            this.element.scrollTop(o.scrollTop);
            this.element.scrollLeft(o.scrollLeft);
        }
    },

    setScrollLeft: function (scrollLeft) {
        if (this.options.scrollLeft === scrollLeft) {
            return;
        }
        this._scrollLock = true;
        this.options.scrollLeft = BI.clamp(scrollLeft || 0, 0, this._getMaxScrollLeft());
        this._debounceRelease();
        this._calculateChildrenToRender();
        this.element.scrollLeft(this.options.scrollLeft);
    },

    setScrollTop: function (scrollTop) {
        if (this.options.scrollTop === scrollTop) {
            return;
        }
        this._scrollLock = true;
        this.options.scrollTop = BI.clamp(scrollTop || 0, 0, this._getMaxScrollTop());
        this._debounceRelease();
        this._calculateChildrenToRender();
        this.element.scrollTop(this.options.scrollTop);
    },

    setOverflowX: function (b) {
        var self = this;
        if (this.options.overflowX !== !!b) {
            this.options.overflowX = !!b;
            BI.nextTick(function () {
                self.element.css({overflowX: !!b ? "auto" : "hidden"});
            });
        }
    },

    setOverflowY: function (b) {
        var self = this;
        if (this.options.overflowY !== !!b) {
            this.options.overflowY = !!b;
            BI.nextTick(function () {
                self.element.css({overflowY: !!b ? "auto" : "hidden"});
            });
        }
    },

    getScrollLeft: function () {
        return this.options.scrollLeft;
    },

    getScrollTop: function () {
        return this.options.scrollTop;
    },

    getMaxScrollLeft: function () {
        return this._getMaxScrollLeft();
    },

    getMaxScrollTop: function () {
        return this._getMaxScrollTop();
    },

    setEstimatedColumnSize: function (width) {
        this.options.estimatedColumnSize = width;
    },

    setEstimatedRowSize: function (height) {
        this.options.estimatedRowSize = height;
    },

    restore: function () {
        BI.each(this.renderedCells, function (i, cell) {
            cell.el.destroy();
        });
        this.renderedCells = [];
        this.renderedKeys = [];
        this._scrollLock = false;
    },

    populate: function (items) {
        if (items && items !== this.options.items) {
            this.options.items = items;
            this.restore();
        }
        this._populate();
    }
});
BI.Grid.EVENT_SCROLL = "EVENT_SCROLL";
$.shortcut('bi.grid_view', BI.Grid);/**
 * floatBox弹出层，
 * @class BI.FloatBox
 * @extends BI.Widget
 */
BI.FloatBox = BI.inherit(BI.Widget, {
    _defaultConfig: function () {
        return BI.extend(BI.FloatBox.superclass._defaultConfig.apply(this, arguments), {
            baseCls: "bi-float-box",
            width: 600,
            height: 500
        })
    },
    _init: function () {
        BI.FloatBox.superclass._init.apply(this, arguments);
        var self = this, o = this.options;
        this.showAction = new BI.ShowAction({
            tar: this
        });
        this._center = BI.createWidget();
        this._north = BI.createWidget();
        this.element.draggable({
            cursor: BICst.cursorUrl,
            handle: ".bi-message-title",
            drag: function (e, ui) {
                var W = $("body").width(), H = $("body").height();
                if (ui.position.left + o.width > W) {
                    ui.position.left = W - o.width;
                }
                if (ui.position.top + o.height > H) {
                    ui.position.top = H - o.height;
                }
                if (ui.position.left < 0) {
                    ui.position.left = 0;
                }
                if (ui.position.top < 0) {
                    ui.position.top = 0;
                }
            }
        });
        this._south = BI.createWidget();
        BI.createWidget({
            type: 'bi.border',
            element: this,
            items: {
                'north': {
                    el: {
                        type: 'bi.border',
                        cls: 'bi-message-title',
                        items: {
                            center: {
                                el: {
                                    type: "bi.absolute",
                                    items: [{
                                        el: this._north,
                                        left: 10,
                                        top: 0,
                                        right: 0,
                                        bottom: 0
                                    }]
                                }
                            },
                            east: {
                                el: {
                                    type: 'bi.icon_button',
                                    cls: 'bi-message-close close-font',
                                    height: 50,
                                    handler: function () {
                                        self.currentSectionProvider.close();
                                    }
                                },
                                width: 60
                            }
                        }
                    },
                    height: 50
                },
                'center': {
                    el: {
                        type: "bi.absolute",
                        items: [{
                            el: this._center,
                            left: 10,
                            top: 10,
                            right: 10,
                            bottom: 10
                        }]
                    }
                },
                'south': {
                    el: {
                        type: "bi.absolute",
                        items: [{
                            el: this._south,
                            left: 10,
                            top: 0,
                            right: 10,
                            bottom: 0
                        }]
                    },
                    height: 60
                }
            }
        })
    },

    populate: function (sectionProvider) {
        var self = this;
        this.currentSectionProvider = sectionProvider;
        sectionProvider.rebuildNorth(this._north);
        sectionProvider.rebuildCenter(this._center);
        sectionProvider.rebuildSouth(this._south);
        if (sectionProvider instanceof BI.Widget) {
            sectionProvider.on(BI.PopoverSection.EVENT_CLOSE, function () {
                self.close();
            })
        }
    },

    show: function () {
        this.showAction.actionPerformed();
    },

    hide: function () {
        this.showAction.actionBack();
    },

    open: function () {
        this.show();
        this.fireEvent(BI.FloatBox.EVENT_FLOAT_BOX_OPEN);
    },

    close: function () {
        this.hide();
        this.fireEvent(BI.FloatBox.EVENT_FLOAT_BOX_CLOSED);
    },

    setZindex: function (zindex) {
        this.element.css({"z-index": zindex});
    }
});

$.shortcut("bi.float_box", BI.FloatBox);

BI.FloatBox.EVENT_FLOAT_BOX_CLOSED = "EVENT_FLOAT_BOX_CLOSED";
BI.FloatBox.EVENT_FLOAT_BOX_OPEN = "EVENT_FLOAT_BOX_CLOSED";
/**
 * 下拉框弹出层, zIndex在1000w
 * @class BI.PopupView
 * @extends BI.Widget
 */
BI.PopupView = BI.inherit(BI.Widget, {
    _defaultConfig: function () {
        return BI.extend(BI.PopupView.superclass._defaultConfig.apply(this, arguments), {
            baseCls: "bi-list-view",
            maxWidth: 'auto',
            minWidth: 100,
            //maxHeight: 200,
            minHeight: 25,
            lgap: 0,
            rgap: 0,
            tgap: 0,
            bgap: 0,
            vgap: 0,
            hgap: 0,
            direction: BI.Direction.Top, //工具栏的方向
            stopEvent: false,//是否停止mousedown、mouseup事件
            stopPropagation: false, //是否停止mousedown、mouseup向上冒泡
            logic: {
                dynamic: true
            },

            tool: false, //自定义工具栏
            tabs: [], //导航栏
            buttons: [], //toolbar栏

            el: {
                type: "bi.button_group",
                items: [],
                chooseType: 0,
                behaviors: {},
                layouts: [{
                    type: "bi.vertical"
                }]
            }
        })
    },

    _init: function () {
        BI.PopupView.superclass._init.apply(this, arguments);
        var self = this, o = this.options;
        var fn = function (e) {
            e.stopPropagation();
        }, stop = function (e) {
            e.stopEvent();
            return false;
        };
        this.element.css({
            "z-index": BI.zIndex_popup,
            "min-width": o.minWidth + "px",
            "max-width": o.maxWidth + "px"
        }).bind({"click": fn});

        //FIXME IE8下 jquery.mousewheeel.js 第一次执行65行$elem["offsetParent"]()的时候报错：未指明的错误 但是第二次或者调试的时候展开一下$elem内容均能避免上述问题
        try {
            this.element.bind("mousewheel", fn);
        } catch (e) {
            this.element.bind("mousewheel", fn);
        }

        o.stopPropagation && this.element.bind({"mousedown": fn, "mouseup": fn, "mouseover": fn});
        o.stopEvent && this.element.bind({"mousedown": stop, "mouseup": stop, "mouseover": stop});
        this.tool = this._createTool();
        this.tab = this._createTab();
        this.view = this._createView();
        this.toolbar = this._createToolBar();

        this.button_group.on(BI.Controller.EVENT_CHANGE, function (type) {
            self.fireEvent(BI.Controller.EVENT_CHANGE, arguments);
            if (type === BI.Events.CLICK) {
                self.fireEvent(BI.PopupView.EVENT_CHANGE);
            }
        });

        BI.createWidget(BI.extend({
            element: this
        }, BI.LogicFactory.createLogic(BI.LogicFactory.createLogicTypeByDirection(o.direction), BI.extend({}, o.logic, {
            scrolly: false,
            lgap: o.lgap,
            rgap: o.rgap,
            tgap: o.tgap,
            bgap: o.bgap,
            vgap: o.vgap,
            hgap: o.hgap,
            items: BI.LogicFactory.createLogicItemsByDirection(o.direction,
                BI.extend({
                    cls: "list-view-outer"
                }, BI.LogicFactory.createLogic(BI.LogicFactory.createLogicTypeByDirection(o.direction), BI.extend({}, o.logic, {
                    items: BI.LogicFactory.createLogicItemsByDirection(o.direction, this.tool, this.tab, this.view, this.toolbar)
                })))
            )
        }))));
    },

    _createView: function () {
        var o = this.options;
        this.button_group = BI.createWidget(o.el, {type: "bi.button_group"});
        this.button_group.element.css({"min-height": o.minHeight + "px"});
        return this.button_group;
    },

    _createTool: function () {
        var o = this.options;
        if (false === o.tool) {
            return;
        }
        return BI.createWidget(o.tool)
    },

    _createTab: function () {
        var o = this.options;
        if (o.tabs.length === 0) {
            return;
        }
        return BI.createWidget({
            type: "bi.center",
            cls: "list-view-tab",
            height: 25,
            items: o.tabs
        })
    },

    _createToolBar: function () {
        var o = this.options;
        if (o.buttons.length === 0) {
            return;
        }

        return BI.createWidget({
            type: "bi.center",
            cls: "list-view-toolbar",
            height: 30,
            items: BI.createItems(o.buttons, {
                once: false,
                shadow: true,
                isShadowShowingOnSelected: true
            })
        })
    },

    getView: function () {
        return this.button_group;
    },

    populate: function (items) {
        this.button_group.populate.apply(this.button_group, arguments);
    },

    resetWidth: function (w) {
        this.options.width = w;
        this.element.width(w);
    },

    resetHeight: function (h) {
        var tbHeight = this.toolbar ? (this.toolbar.attr("height") || 30) : 0,
            tabHeight = this.tab ? (this.tab.attr("height") || 25) : 0,
            toolHeight = ((this.tool && this.tool.attr("height")) || 25) * ((this.tool && this.tool.isVisible()) ? 1 : 0);
        this.view.resetHeight ? this.view.resetHeight(h - tbHeight - tabHeight - toolHeight - 2) :
            this.view.element.css({"max-height": (h - tbHeight - tabHeight - toolHeight - 2) + "px"})
    },

    setEnable: function (arg) {
        BI.PopupView.superclass.setEnable.apply(this, arguments);
        this.view && this.view.setEnable(arg);
    },

    setValue: function (selectedValues) {
        this.tab && this.tab.setValue(selectedValues);
        this.button_group.setValue(selectedValues);
    },

    getValue: function () {
        return this.button_group.getValue();
    }
});
BI.PopupView.EVENT_CHANGE = "EVENT_CHANGE";
$.shortcut("bi.popup_view", BI.PopupView);/**
 * guy
 * @class BI.ScrollView
 * @extends BI.Widget
 */
BI.ScrollView = BI.inherit(BI.Widget, {

    _const: {
        dropDownHeight: 15,
        expandIcon: "column-next-page-h-font",
        collapseIcon: "column-pre-page-h-font"
    },

    _defaultConfig: function() {
        return BI.extend(BI.ScrollView.superclass._defaultConfig.apply(this, arguments), {
            baseCls:"bi-scroll-view",
            scrollHeight: 50,
            maxHeight: 300
        })
    },

    _init : function() {
        BI.ScrollView.superclass._init.apply(this, arguments);

        this.scrollUp = false;
        this.scroll = BI.createWidget({
            type: "bi.vertical",
            cls: "scroll-container",
            scrolly: true
        })
        BI.createWidget({
            type: "bi.vertical",
            element: this,
            scrolly: false,
            items: [this.scroll]
        })

        this.dropdown = BI.createWidget({
            type: "bi.icon_button",
            height: this._const.dropDownHeight,
            cls: "scroll-drop-down-icon " + this._const.expandIcon,
            handler: BI.bind(this._dropDownOrUp, this)
        })

        BI.createWidget({
            type: "bi.absolute",
            element: this,
            items: [{
                el: this.dropdown,
                left: 0,
                right: 0,
                bottom: -1 * this._const.dropDownHeight
            }]
        })
        this.populate(this.options.items);
    },

    _dropDownOrUp: function(){
        if(!this.scrollUp){
            var height = this.element.height();
            height += this.options.scrollHeight;
            height = Math.min(height, this.scroll.element[0].scrollHeight, this.options.maxHeight);
            this.element.height(height);
            this._checkDropDownState();
        } else {
            var height = this.element.height();
            height -= this.options.scrollHeight;
            height = Math.max(height, this.options.height);
            this.element.height(height);
            this._checkDropDownState();
        }
    },

    _checkDropDownState: function(){
        var height = this.element.height();
        if(!this._checkScroll() || height >= this.options.maxHeight){
            this.scrollUp = true;
            this.dropdown.element.removeClass(this._const.expandIcon).addClass(this._const.collapseIcon);
        } else if(height <= this.options.height){
            this.scrollUp = false;
            this.dropdown.element.addClass(this._const.expandIcon);
        } else {
            this.dropdown.element.addClass(this.scrollUp ? this._const.collapseIcon : this._const.expandIcon);
        }
    },

    _checkScroll: function(){
        this.scroll.element.height(this.element.height());
        return this.scroll.element[0].scrollHeight > this.scroll.element[0].clientHeight;
    },

    _checkDropDown: function(){
        if(this._checkScroll()){
            this.dropdown.visible();
            //this.scrollUp = false;
            this._checkDropDownState();
        } else {
            this.dropdown.invisible();
        }
    },

    populate: function(){
        this.scroll.populate.apply(this.scroll, arguments);
        this.resize();
    },

    resize: function(){
        this.element.height(this.options.height);
        BI.nextTick(BI.bind(this._checkDropDown, this));
    },

    addItem: function(){
        this.scroll.addItem.apply(this.scroll, arguments);
        BI.nextTick(BI.bind(this._checkDropDown, this));
    }
});

$.shortcut("bi.scroll_view", BI.ScrollView);/**
 * 搜索面板
 *
 * Created by GUY on 2015/9/28.
 * @class BI.SearcherView
 * @extends BI.Pane
 */

BI.SearcherView = BI.inherit(BI.Pane, {
    _defaultConfig: function () {
        var conf = BI.SearcherView.superclass._defaultConfig.apply(this, arguments);
        return BI.extend(conf, {
            baseCls: (conf.baseCls || "") + " bi-searcher-view",
            tipText: BI.i18nText("BI-No_Select"),
            chooseType: BI.Selection.Single,

            matcher: {//完全匹配的构造器
                type: "bi.button_group",
                behaviors: {
                    redmark: function () {
                        return true;
                    }
                },
                items: [],
                layouts: [{
                    type: "bi.vertical"
                }]
            },
            searcher: {
                type: "bi.button_group",
                behaviors: {
                    redmark: function () {
                        return true;
                    }
                },
                items: [],
                layouts: [{
                    type: "bi.vertical"
                }]
            }
        })
    },

    _init: function () {
        BI.SearcherView.superclass._init.apply(this, arguments);
        var self = this, o = this.options;

        this.matcher = BI.createWidget(o.matcher, {
            type: "bi.button_group",
            chooseType: o.chooseType,
            behaviors: {
                redmark: function () {
                    return true;
                }
            },
            layouts: [{
                type: "bi.vertical"
            }]
        });
        this.matcher.on(BI.Controller.EVENT_CHANGE, function (type, val, ob) {
            self.fireEvent(BI.Controller.EVENT_CHANGE, arguments);
            if (type === BI.Events.CLICK) {
                self.fireEvent(BI.SearcherView.EVENT_CHANGE, val, ob);
            }
        });
        this.spliter = BI.createWidget({
            type: "bi.vertical",
            height: 1,
            hgap: 10,
            items: [{
                type: "bi.layout",
                height: 1,
                cls: "searcher-view-spliter"
            }]
        });
        this.searcher = BI.createWidget(o.searcher, {
            type: "bi.button_group",
            chooseType: o.chooseType,
            behaviors: {
                redmark: function () {
                    return true;
                }
            },
            layouts: [{
                type: "bi.vertical"
            }]
        });
        this.searcher.on(BI.Controller.EVENT_CHANGE, function (type, val, ob) {
            self.fireEvent(BI.Controller.EVENT_CHANGE, arguments);
            if (type === BI.Events.CLICK) {
                self.fireEvent(BI.SearcherView.EVENT_CHANGE, val, ob);
            }
        });

        BI.createWidget({
            type: "bi.vertical",
            element: this,
            items: [this.matcher, this.spliter, this.searcher]
        });
    },

    startSearch: function () {

    },

    stopSearch: function () {

    },

    setValue: function (v) {
        this.matcher.setValue(v);
        this.searcher.setValue(v);
    },

    getValue: function () {
        return this.matcher.getValue().concat(this.searcher.getValue());
    },

    populate: function (searchResult, matchResult, keyword) {
        searchResult || (searchResult = []);
        matchResult || (matchResult = []);
        this.setTipVisible(searchResult.length + matchResult.length === 0);
        this.spliter.setVisible(BI.isNotEmptyArray(matchResult) && BI.isNotEmptyArray(searchResult));
        this.matcher.populate(matchResult, keyword);
        this.searcher.populate(searchResult, keyword);
    },

    empty: function () {
        this.searcher.empty();
        this.matcher.empty();
    },

    hasMatched: function () {
        return this.matcher.getAllButtons().length > 0;
    }
});
BI.SearcherView.EVENT_CHANGE = "EVENT_CHANGE";

$.shortcut("bi.searcher_view", BI.SearcherView);/**
 * 分页控件
 *
 * Created by GUY on 2015/8/31.
 * @class BI.Pager
 * @extends BI.Widget
 */
BI.Pager = BI.inherit(BI.Widget, {
    _defaultConfig: function () {
        return BI.extend(BI.Pager.superclass._defaultConfig.apply(this, arguments), {
            baseCls: "bi-pager",
            behaviors: {},
            layouts: [{
                type: "bi.horizontal",
                hgap: 10,
                vgap: 0
            }],

            dynamicShow: true, //是否动态显示上一页、下一页、首页、尾页， 若为false，则指对其设置使能状态
            //dynamicShow为false时以下两个有用
            dynamicShowFirstLast: false,//是否动态显示首页、尾页
            dynamicShowPrevNext: false,//是否动态显示上一页、下一页
            pages: false, //总页数
            curr: function () {
                return 1;
            }, //初始化当前页
            groups: 0, //连续显示分页数
            jump: BI.emptyFn, //分页的回调函数

            first: false, //是否显示首页
            last: false, //是否显示尾页
            prev: "上一页",
            next: "下一页",

            firstPage: 1,
            lastPage: function () { //在万不得已时才会调用这个函数获取最后一页的页码,  主要作用于setValue方法
                return 1;
            },
            hasPrev: BI.emptyFn, //pages不可用时有效
            hasNext: BI.emptyFn  //pages不可用时有效
        })
    },
    _init: function () {
        BI.Pager.superclass._init.apply(this, arguments);
        var self = this;
        this.currPage = BI.result(this.options, "curr");
        //翻页太灵敏
        this._lock = false;
        this._debouce = BI.debounce(function () {
            self._lock = false;
        }, 300);
        this._populate();
    },

    _populate: function () {
        var self = this, o = this.options, view = [], dict = {};
        this.empty();
        var pages = BI.result(o, "pages");
        var curr = BI.result(this, "currPage");
        var groups = BI.result(o, "groups");
        var first = BI.result(o, "first");
        var last = BI.result(o, "last");
        var prev = BI.result(o, "prev");
        var next = BI.result(o, "next");

        if (pages === false) {
            groups = 0;
            first = false;
            last = false;
        } else {
            groups > pages && (groups = pages);
        }

        //计算当前组
        dict.index = Math.ceil((curr + ((groups > 1 && groups !== pages) ? 1 : 0)) / (groups === 0 ? 1 : groups));

        //当前页非首页，则输出上一页
        if (((!o.dynamicShow && !o.dynamicShowPrevNext) || curr > 1) && prev !== false) {
            if (BI.isKey(prev)) {
                view.push({
                    text: prev,
                    value: "prev",
                    disabled: pages === false ? o.hasPrev(curr) === false : !(curr > 1 && prev !== false)
                })
            } else {
                view.push(BI.extend({
                    disabled: pages === false ? o.hasPrev(curr) === false : !(curr > 1 && prev !== false)
                }, prev));
            }
        }

        //当前组非首组，则输出首页
        if (((!o.dynamicShow && !o.dynamicShowFirstLast) || (dict.index > 1 && groups !== 0)) && first) {
            view.push({
                text: first,
                value: "first",
                disabled: !(dict.index > 1 && groups !== 0)
            });
            if (dict.index > 1 && groups !== 0) {
                view.push({
                    type: "bi.label",
                    cls: "page-ellipsis",
                    text: "\u2026"
                });
            }
        }

        //输出当前页组
        dict.poor = Math.floor((groups - 1) / 2);
        dict.start = dict.index > 1 ? curr - dict.poor : 1;
        dict.end = dict.index > 1 ? (function () {
            var max = curr + (groups - dict.poor - 1);
            return max > pages ? pages : max;
        }()) : groups;
        if (dict.end - dict.start < groups - 1) { //最后一组状态
            dict.start = dict.end - groups + 1;
        }
        var s = dict.start, e = dict.end;
        if (first && last && (dict.index > 1 && groups !== 0) && (pages > groups && dict.end < pages && groups !== 0)) {
            s++;
            e--;
        }
        for (; s <= e; s++) {
            if (s === curr) {
                view.push({
                    text: s,
                    value: s,
                    selected: true
                })
            } else {
                view.push({
                    text: s,
                    value: s
                })
            }
        }

        //总页数大于连续分页数，且当前组最大页小于总页，输出尾页
        if (((!o.dynamicShow && !o.dynamicShowFirstLast) || (pages > groups && dict.end < pages && groups !== 0)) && last) {
            if (pages > groups && dict.end < pages && groups !== 0) {
                view.push({
                    type: "bi.label",
                    cls: "page-ellipsis",
                    text: "\u2026"
                });
            }
            view.push({
                text: last,
                value: "last",
                disabled: !(pages > groups && dict.end < pages && groups !== 0)
            })
        }

        //当前页不为尾页时，输出下一页
        dict.flow = !prev && groups === 0;
        if (((!o.dynamicShow && !o.dynamicShowPrevNext) && next) || (curr !== pages && next || dict.flow)) {
            view.push((function () {
                if (BI.isKey(next)) {
                    if (pages === false) {
                        return {text: next, value: "next", disabled: o.hasNext(curr) === false}
                    }
                    return (dict.flow && curr === pages)
                        ?
                    {text: next, value: "next", disabled: true}
                        :
                    {text: next, value: "next", disabled: !(curr !== pages && next || dict.flow)};
                } else {
                    return BI.extend({
                        disabled: pages === false ? o.hasNext(curr) === false : !(curr !== pages && next || dict.flow)
                    }, next);
                }
            }()));
        }

        this.button_group = BI.createWidget({
            type: "bi.button_group",
            element: this,
            items: BI.createItems(view, {
                cls: "page-item",
                height: 23,
                hgap: 10
            }),
            behaviors: o.behaviors,
            layouts: o.layouts
        });
        this.button_group.on(BI.Controller.EVENT_CHANGE, function (type, value, obj) {
            if (self._lock === true) {
                return;
            }
            self._lock = true;
            self._debouce();
            if (type === BI.Events.CLICK) {
                var v = self.button_group.getValue()[0];
                switch (v) {
                    case "first":
                        self.currPage = 1;
                        break;
                    case "last":
                        self.currPage = pages;
                        break;
                    case "prev":
                        self.currPage--;
                        break;
                    case "next":
                        self.currPage++;
                        break;
                    default:
                        self.currPage = v;
                        break;
                }
                o.jump.apply(self, [{
                    pages: pages,
                    curr: self.currPage
                }]);
                self._populate();
                self.fireEvent(BI.Pager.EVENT_CHANGE, obj);
            }
            self.fireEvent(BI.Controller.EVENT_CHANGE, arguments);
        });
        this.fireEvent(BI.Pager.EVENT_AFTER_POPULATE);
    },

    getCurrentPage: function () {
        return this.currPage;
    },

    setAllPages: function (pages) {
        this.options.pages = pages;
    },

    hasPrev: function (v) {
        v || (v = 1);
        var o = this.options;
        var pages = this.options.pages;
        return pages === false ? o.hasPrev(v) : v > 1;
    },

    hasNext: function (v) {
        v || (v = 1);
        var o = this.options;
        var pages = this.options.pages;
        return pages === false ? o.hasNext(v) : v < pages;
    },

    setValue: function (v) {
        var o = this.options;
        v = v | 0;
        v = v < 1 ? 1 : v;
        if (o.pages === false) {
            var lastPage = BI.result(o, "lastPage"), firstPage = 1;
            this.currPage = v > lastPage ? lastPage : ((firstPage = BI.result(o, "firstPage")), (v < firstPage ? firstPage : v));
        } else {
            v = v > o.pages ? o.pages : v;
            this.currPage = v;
        }
        this._populate();
    },

    getValue: function () {
        var val = this.button_group.getValue()[0];
        switch (val) {
            case "prev":
                return -1;
            case "next":
                return 1;
            case "first":
                return BI.MIN;
            case "last":
                return BI.MAX;
            default :
                return val;
        }
    },

    attr: function (key, value) {
        BI.Pager.superclass.attr.apply(this, arguments);
        if (key === "curr") {
            this.currPage = BI.result(this.options, "curr");
        }
    },

    populate: function () {
        this._populate();
    }
});
BI.Pager.EVENT_CHANGE = "EVENT_CHANGE";
BI.Pager.EVENT_AFTER_POPULATE = "EVENT_AFTER_POPULATE";
$.shortcut("bi.pager", BI.Pager);/**
 * Created by Young's on 2016/8/17.
 * 加载面板，一般只用于 requestAsync 中
 */
BI.RequstLoading = BI.inherit(BI.Widget, {
    _defaultConfig: function () {
        return BI.extend(BI.RequstLoading.superclass._defaultConfig.apply(this, arguments), {});
    },

    _init: function () {
        BI.RequstLoading.superclass._init.apply(this, arguments);
        var self = this, o = this.options;
        var mask = BI.Maskers.create(BI.RequstLoading.MASK_ID);
        this.callback = o.callback;
        this.paneTab = BI.createWidget({
            type: "bi.tab",
            cardCreator: BI.bind(this._cardCreator, this),
            defaultShowIndex: BI.RequstLoading.ERROR,
            width: 400,
            height: 300
        });
        var tempIcon = BI.createWidget({
            type: "bi.icon_button",
            cls: "data-link-test-fail-icon",
            width: 0,
            height: 0
        });
        BI.createWidget({
            type: "bi.absolute",
            element: $('body'),
            items: [{
                el: tempIcon,
                bottom: 0
            }]
        });

        BI.createWidget({
            type: "bi.absolute",
            element: mask,
            cls: "bi-request-loading",
            items: [{
                el: {
                    type: "bi.layout",
                    cls: "mask-pane"
                },
                top: 0,
                left: 0,
                bottom: 0,
                right: 0
            }, {
                el: {
                    type: "bi.center_adapt",
                    items: [this.paneTab]
                },
                top: 0,
                left: 0,
                right: 0,
                bottom: 0
            }]
        });
    },

    _cardCreator: function (v) {
        var self = this;
        var cancel = BI.createWidget({
            type: "bi.button",
            text: BI.i18nText("BI-Basic_Cancel"),
            title: BI.i18nText("BI-Basic_Cancel"),
            level: "ignore",
            height: 28,
            width: 90,
            handler: function () {
                BI.Maskers.hide(BI.RequstLoading.MASK_ID);
            }
        });
        var retry = BI.createWidget({
            type: "bi.button",
            text: BI.i18nText("BI-Basic_Retry"),
            title: BI.i18nText("BI-Basic_Retry"),
            level: "common",
            height: 28,
            width: 90,
            handler: function () {
                self.paneTab.setSelect(BI.RequstLoading.LOADING);
                self.callback();
            }
        });
        switch (v) {
            case BI.RequstLoading.LOADING:
                return BI.createWidget({
                    type: "bi.vertical",
                    items: [{
                        type: "bi.center_adapt",
                        cls: "loading-bar-icon",
                        items: [{
                            type: "bi.icon",
                            width: 208,
                            height: 15
                        }]
                    }, {
                        type: "bi.label",
                        cls: "loading-comment",
                        text: BI.i18nText("BI-Basic_Loading"),
                        height: 30
                    }],
                    width: 208,
                    height: 200,
                    vgap: 10
                });
            case BI.RequstLoading.LOADING_TIMEOUT:
                return BI.createWidget({
                    type: "bi.vertical",
                    items: [{
                        type: "bi.center_adapt",
                        cls: "loading-bar-icon",
                        items: [{
                            type: "bi.icon",
                            width: 208,
                            height: 15
                        }]
                    }, {
                        type: "bi.label",
                        cls: "loading-comment",
                        text: BI.i18nText("BI-Basic_Loading"),
                        height: 30
                    }, {
                        type: "bi.label",
                        text: BI.i18nText("BI-Request_Time_Out_Toast_Tip"),
                        cls: "load-timeout-warning"
                    }, {
                        type: "bi.left_right_vertical_adapt",
                        items: {
                            left: [cancel],
                            right: [retry]
                        },
                        height: 30,
                        llgap: 100,
                        rrgap: 100
                    }],
                    vgap: 10
                });
            case BI.RequstLoading.ERROR:
                return BI.createWidget({
                    type: "bi.vertical",
                    items: [{
                        type: "bi.center_adapt",
                        cls: "data-link-test-fail-icon",
                        items: [{
                            type: "bi.icon",
                            width: 126,
                            height: 126
                        }]
                    }, {
                        type: "bi.label",
                        text: BI.i18nText("BI-Connection_Lost"),
                        cls: "load-fail-comment"
                    }, {
                        type: "bi.left_right_vertical_adapt",
                        items: {
                            left: [cancel],
                            right: [retry]
                        },
                        height: 30,
                        llgap: 100,
                        rrgap: 100
                    }],
                    vgap: 20
                });
        }
    },

    showLoading: function () {
        BI.Maskers.show(BI.RequstLoading.MASK_ID);
        this.paneTab.setSelect(BI.RequstLoading.LOADING);
    },

    showError: function () {
        BI.Maskers.show(BI.RequstLoading.MASK_ID);
        this.paneTab.setSelect(BI.RequstLoading.ERROR);
    },

    setCallback: function (callback) {
        this.callback = callback;
    }
});
BI.extend(BI.RequstLoading, {
    MASK_ID: "___request__loading___",
    LOADING: 1,
    LOADING_TIMEOUT: 2,
    ERROR: 3
});
$.shortcut("bi.request_loading", BI.RequstLoading);/**
 * 超链接
 *
 * Created by GUY on 2015/9/9.
 * @class BI.A
 * @extends BI.Text
 * @abstract
 */
BI.A = BI.inherit(BI.Text, {
    _defaultConfig: function () {
        var conf = BI.A.superclass._defaultConfig.apply(this, arguments);
        return BI.extend(conf, {
            baseCls: (conf.baseCls || "") + " bi-a display-block",
            href: "",
            target: "_blank",
            el: null,
            element: "<a/>"
        })
    },
    _init: function () {
        var o = this.options;
        BI.A.superclass._init.apply(this, arguments);
        this.element.attr({href: o.href, target: o.target});
        if (o.el) {
            BI.createWidget(o.el, {
                element: this
            });
        }
    }
});

$.shortcut("bi.a", BI.A);/**
 * guy
 * 加载条
 * @type {*|void|Object}
 */
BI.LoadingBar = BI.inherit(BI.Single, {
    consts: {
        loadedText: BI.i18nText("BI-Load_More"),
        endText: BI.i18nText("BI-No_More_Data")
    },
    _defaultConfig: function() {
        var conf = BI.LoadingBar.superclass._defaultConfig.apply(this, arguments);
        return BI.extend( conf, {
            baseCls : (conf.baseCls ||"")+' bi-loading-bar',
            height: 30,
            handler: BI.emptyFn
        })
    },
    _init : function() {
        BI.LoadingBar.superclass._init.apply(this, arguments);
        var self = this;
        this.loaded = BI.createWidget({
            type: "bi.text_button",
            cls: "loading-text",
            text: this.consts.loadedText,
            width: 120,
            handler: this.options.handler
        })
        this.loaded.on(BI.Controller.EVENT_CHANGE, function(type){
            self.fireEvent(BI.Controller.EVENT_CHANGE, arguments);
        })

        this.loading = BI.createWidget({
            type: "bi.layout",
            width: this.options.height,
            height:this.options.height,
            cls: "loading-background cursor-default"
        })
        var loaded = BI.createWidget({
            type: "bi.center_adapt",
            items: [this.loaded]
        })
        var loading = BI.createWidget({
            type: "bi.center_adapt",
            items: [this.loading]
        })
        this.cardLayout = BI.createWidget({
            type: "bi.card",
            element: this,
            items: [{
                el: loaded,
                cardName: "loaded"
            }, {
                el: loading,
                cardName: "loading"
            }]
        })
        this.invisible();
    },

    _reset: function(){
        this.visible();
        this.loaded.setText(this.consts.loadedText);
        this.loaded.enable();
    },

    setLoaded: function(){
        this._reset();
        this.cardLayout.showCardByName("loaded");
    },

    setEnd: function(){
        this.setLoaded();
        this.loaded.setText(this.consts.endText);
        this.loaded.disable();
    },

    setLoading: function(){
        this._reset();
        this.cardLayout.showCardByName("loading");
    }
});

$.shortcut("bi.loading_bar", BI.LoadingBar);/**
 * @class BI.IconButton
 * @extends BI.BasicButton
 * 图标的button
 */
BI.IconButton = BI.inherit(BI.BasicButton, {
    _defaultConfig: function () {
        var conf = BI.IconButton.superclass._defaultConfig.apply(this, arguments);
        return BI.extend(conf, {
            baseCls: (conf.baseCls || "") + " bi-icon-button horizon-center",
            iconWidth: null,
            iconHeight: null
        })
    },

    _init: function () {
        BI.IconButton.superclass._init.apply(this, arguments);
        var o = this.options;
        this.element.css({
            textAlign: 'center'
        });
        this.icon = BI.createWidget({
            type: 'bi.icon',
            width: o.iconWidth,
            height: o.iconHeight
        });
        if (BI.isNumber(o.height) && o.height > 0 && BI.isNull(o.iconWidth) && BI.isNull(o.iconHeight)) {
            this.element.css("lineHeight", o.height + "px");
            BI.createWidget({
                type: "bi.default",
                element: this,
                items: [this.icon]
            })
        } else {
            BI.createWidget({
                element: this,
                type: 'bi.center_adapt',
                items: [this.icon]
            });
        }
    },

    doClick: function () {
        BI.IconButton.superclass.doClick.apply(this, arguments);
        if (this.isValid()) {
            this.fireEvent(BI.IconButton.EVENT_CHANGE, this);
        }
    }
});
BI.IconButton.EVENT_CHANGE = "IconButton.EVENT_CHANGE";
$.shortcut("bi.icon_button", BI.IconButton);/**
 * 图片的button
 *
 * Created by GUY on 2016/1/27.
 * @class BI.ImageButton
 * @extends BI.BasicButton
 */
BI.ImageButton = BI.inherit(BI.BasicButton, {
    _defaultConfig: function () {
        var conf = BI.ImageButton.superclass._defaultConfig.apply(this, arguments);
        return BI.extend(conf, {
            baseCls: (conf.baseCls || "") + " bi-image-button",
            src: "",
            iconWidth: "100%",
            iconHeight: "100%"
        })
    },

    _init: function () {
        BI.ImageButton.superclass._init.apply(this, arguments);
        var o = this.options;
        this.image = BI.createWidget({
            type: "bi.img",
            width: o.iconWidth,
            height: o.iconHeight,
            src: o.src
        });
        if (BI.isNumber(o.iconWidth) || BI.isNumber(o.iconHeight)) {
            BI.createWidget({
                type: "bi.center_adapt",
                element: this,
                items: [this.image]
            })
        } else {
            BI.createWidget({
                type: "bi.adaptive",
                element: this,
                items: [this.image],
                scrollable: false
            })
        }
    },

    setWidth: function (w) {
        BI.ImageButton.superclass.setWidth.apply(this, arguments);
        this.options.width = w;
    },

    setHeight: function (h) {
        BI.ImageButton.superclass.setHeight.apply(this, arguments);
        this.options.height = h;
    },

    setImageWidth: function (w) {
        this.image.setWidth(w);
    },

    setImageHeight: function (h) {
        this.image.setHeight(h);
    },

    getImageWidth: function () {
        return this.image.element.width();
    },

    getImageHeight: function () {
        return this.image.element.height();
    },

    setSrc: function (src) {
        this.options.src = src;
        this.image.setSrc(src);
    },

    getSrc: function () {
        return this.image.getSrc();
    },

    doClick: function () {
        BI.ImageButton.superclass.doClick.apply(this, arguments);
        if (this.isValid()) {
            this.fireEvent(BI.ImageButton.EVENT_CHANGE, this);
        }
    }
});
BI.ImageButton.EVENT_CHANGE = "ImageButton.EVENT_CHANGE";
$.shortcut("bi.image_button", BI.ImageButton);(function ($) {

    /**
     * 文字类型的按钮
     * @class BI.Button
     * @extends BI.BasicButton
     *
     * @cfg {JSON} options 配置属性
     * @cfg {'common'/'success'/'warning'/'ignore'} [options.level='common'] 按钮类型，用不同颜色强调不同的场景
     */
    BI.Button = BI.inherit(BI.BasicButton, {
        _const: {
            minWidth: 90
        },

        _defaultConfig: function () {
            var conf = BI.Button.superclass._defaultConfig.apply(this, arguments);
            return BI.extend(conf, {
                baseCls: (conf.baseCls || "") + ' bi-button',
                shadow: true,
                isShadowShowingOnSelected: true,
                readonly: true,
                iconClass: "",
                level: 'common',
                textAlign: "center",
                whiteSpace: "nowrap",
                forceCenter: false,
                textWidth: null,
                textHeight: null,
                hgap: 10,
                vgap: 0,
                tgap: 0,
                bgap: 0,
                lgap: 0,
                rgap: 0
            })
        },

        _init: function () {
            BI.Button.superclass._init.apply(this, arguments);
            var o = this.options, self = this;
            if (BI.isNumber(o.height)) {
                this.element.css({height: o.height - 2, lineHeight: (o.height - 2) + 'px'});
            }
            if (BI.isKey(o.iconClass)) {
                this.icon = BI.createWidget({
                    type: "bi.icon",
                    width: 18
                });
                this.text = BI.createWidget({
                    type: "bi.label",
                    text: o.text,
                    value: o.value
                });
                BI.createWidget({
                    type: "bi.horizontal_auto",
                    cls: "button-" + o.level + " " + o.iconClass,
                    element: this,
                    hgap: o.hgap,
                    vgap: o.vgap,
                    tgap: o.tgap,
                    bgap: o.bgap,
                    lgap: o.lgap,
                    rgap: o.rgap,
                    items: [{
                        type: "bi.horizontal",
                        items: [this.icon, this.text]
                    }]
                })
            } else {
                this.text = BI.createWidget({
                    type: "bi.label",
                    cls: "button-" + o.level,
                    textAlign: o.textAlign,
                    whiteSpace: o.whiteSpace,
                    forceCenter: o.forceCenter,
                    textWidth: o.textWidth,
                    textHeight: o.textHeight,
                    hgap: o.hgap,
                    vgap: o.vgap,
                    tgap: o.tgap,
                    bgap: o.bgap,
                    lgap: o.lgap,
                    rgap: o.rgap,
                    element: this,
                    text: o.text,
                    value: o.value
                });
            }
            this.element.css({"min-width": this._const.minWidth - 2 + "px"});
        },

        doClick: function () {
            BI.Button.superclass.doClick.apply(this, arguments);
            if (this.isValid()) {
                this.fireEvent(BI.Button.EVENT_CHANGE, this);
            }
        },

        setText: function (text) {
            BI.Button.superclass.setText.apply(this, arguments);
            this.text.setText(text);
        },

        setValue: function (text) {
            BI.Button.superclass.setValue.apply(this, arguments);
            if (!this.isReadOnly()) {
                this.text.setValue(text);
            }
        },

        setEnable: function (b) {
            BI.Button.superclass.setEnable.apply(this, arguments);
            this.text.setEnable(b);
            this.icon && this.icon.setEnable(b);
        },

        doRedMark: function () {
            this.text.doRedMark.apply(this.text, arguments);
        },

        unRedMark: function () {
            this.text.unRedMark.apply(this.text, arguments);
        },

        doHighLight: function () {
            this.text.doHighLight.apply(this.text, arguments);
        },

        unHighLight: function () {
            this.text.unHighLight.apply(this.text, arguments);
        },

        destroy: function () {
            BI.Button.superclass.destroy.apply(this, arguments);
        }
    });
    $.shortcut('bi.button', BI.Button);
    BI.Button.EVENT_CHANGE = "EVENT_CHANGE";
})(jQuery);/**
 * guy
 * 可以点击的一行文字
 * @class BI.TextButton
 * @extends BI.BasicButton
 * 文字button
 */
BI.TextButton = BI.inherit(BI.BasicButton, {
    _defaultConfig: function () {
        var conf = BI.TextButton.superclass._defaultConfig.apply(this, arguments);
        return BI.extend(conf, {
            baseCls: (conf.baseCls || "") + " bi-text-button",
            textAlign: "center",
            whiteSpace: "nowrap",
            forceCenter: false,
            textWidth: null,
            textHeight: null,
            hgap: 0,
            lgap: 0,
            rgap: 0,
            text: "",
            py: ""
        })
    },

    _init: function () {
        BI.TextButton.superclass._init.apply(this, arguments);
        var o = this.options;
        this.text = BI.createWidget({
            type: "bi.label",
            element: this,
            textAlign: o.textAlign,
            whiteSpace: o.whiteSpace,
            textWidth: o.textWidth,
            textHeight: o.textHeight,
            forceCenter: o.forceCenter,
            width: o.width,
            height: o.height,
            hgap: o.hgap,
            lgap: o.lgap,
            rgap: o.rgap,
            text: o.text,
            value: o.value,
            py: o.py
        });
    },

    doClick: function () {
        BI.TextButton.superclass.doClick.apply(this, arguments);
        if (this.isValid()) {
            this.fireEvent(BI.TextButton.EVENT_CHANGE, this.getValue(), this);
        }
    },

    doRedMark: function () {
        this.text.doRedMark.apply(this.text, arguments);
    },

    unRedMark: function () {
        this.text.unRedMark.apply(this.text, arguments);
    },

    doHighLight: function () {
        this.text.doHighLight.apply(this.text, arguments);
    },

    unHighLight: function () {
        this.text.unHighLight.apply(this.text, arguments);
    },

    setText: function (text) {
        BI.TextButton.superclass.setText.apply(this, arguments);
        text = BI.isArray(text) ? text.join(",") : text;
        this.text.setText(text);
    },

    setStyle: function (style) {
        this.text.setStyle(style);
    },

    setValue: function (text) {
        BI.TextButton.superclass.setValue.apply(this, arguments);
        if (!this.isReadOnly()) {
            text = BI.isArray(text) ? text.join(",") : text;
            this.text.setValue(text);
        }
    }
});
BI.TextButton.EVENT_CHANGE = "EVENT_CHANGE";
$.shortcut("bi.text_button", BI.TextButton);/**
 * 带有一个占位
 *
 * Created by GUY on 2015/9/11.
 * @class BI.BlankIconIconTextItem
 * @extends BI.BasicButton
 */
BI.BlankIconIconTextItem = BI.inherit(BI.BasicButton, {
    _const: {
        commonWidth: 25
    },

    _defaultConfig: function () {
        var conf = BI.BlankIconIconTextItem.superclass._defaultConfig.apply(this, arguments);
        return BI.extend(conf, {
            baseCls: (conf.baseCls || "") + " bi-blank-icon-text-item",
            logic: {
                dynamic: false
            },
            iconCls1: "close-ha-font",
            iconCls2: "close-ha-font",
            blankWidth: 0,
            iconHeight: null,
            iconWidth: null,
            textHgap: 0,
            textVgap: 0,
            textLgap: 0,
            textRgap: 0
        })
    },
    _init: function () {
        BI.BlankIconIconTextItem.superclass._init.apply(this, arguments);
        var o = this.options, c = this._const;
        var blank = BI.createWidget({
            type: "bi.layout",
            width: o.blankWidth
        })
        this.text = BI.createWidget({
            type: "bi.label",
            cls: "list-item-text",
            textAlign: "left",
            hgap: o.textHgap,
            vgap: o.textVgap,
            lgap: o.textLgap,
            rgap: o.textRgap,
            text: o.text,
            value: o.value,
            keyword: o.keyword,
            height: o.height
        });
        this.icon1 = BI.createWidget({
            type: "bi.icon_button",
            cls: o.iconCls1,
            forceNotSelected: true,
            width: c.commonWidth
        });
        this.icon2 = BI.createWidget({
            type: "bi.icon_button",
            cls: o.iconCls2,
            forceNotSelected: true,
            width: c.commonWidth
        });

        BI.createWidget(BI.extend({
            element: this
        }, BI.LogicFactory.createLogic("horizontal", BI.extend(o.logic, {
            items: BI.LogicFactory.createLogicItemsByDirection("left", blank, this.icon1, this.icon2, this.text)
        }))));
    },

    doClick: function () {
        BI.BlankIconIconTextItem.superclass.doClick.apply(this, arguments);
        if (this.isValid()) {
            this.fireEvent(BI.BlankIconIconTextItem.EVENT_CHANGE, this.getValue(), this);
        }
    },

    setSelected: function (b) {
        BI.BlankIconIconTextItem.superclass.setSelected.apply(this, arguments);
        this.icon1.setSelected(b);
        this.icon2.setSelected(b);
    },

    setValue: function () {
        if (!this.isReadOnly()) {
            this.text.setValue.apply(this.text, arguments);
        }
    },

    getValue: function () {
        return this.text.getValue();
    },

    setText: function () {
        this.text.setText.apply(this.text, arguments);
    },

    getText: function () {
        return this.text.getText();
    },

    doRedMark: function () {
        this.text.doRedMark.apply(this.text, arguments);
    },

    unRedMark: function () {
        this.text.unRedMark.apply(this.text, arguments);
    },

    doHighLight: function () {
        this.text.doHighLight.apply(this.text, arguments);
    },

    unHighLight: function () {
        this.text.unHighLight.apply(this.text, arguments);
    }
});
BI.BlankIconIconTextItem.EVENT_CHANGE = "EVENT_CHANGE";
$.shortcut("bi.blank_icon_icon_text_item", BI.BlankIconIconTextItem);/**
 * guy
 * 一个占位符和两个icon和一行数 组成的一行listitem
 *
 * Created by GUY on 2015/9/15.
 * @class BI.BlankIconTextIconItem
 * @extends BI.BasicButton
 */
BI.BlankIconTextIconItem = BI.inherit(BI.BasicButton, {
    _const: {
        commonWidth: 25
    },

    _defaultConfig: function () {
        var conf = BI.BlankIconTextIconItem.superclass._defaultConfig.apply(this, arguments);
        return BI.extend(conf, {
            baseCls: (conf.baseCls || "") + " bi-blank-icon-text-icon-item",
            logic: {
                dynamic: false
            },
            iconCls1: "close-ha-font",
            iconCls2: "close-ha-font",
            blankWidth: 0,
            iconHeight: null,
            iconWidth: null,
            textHgap: 0,
            textVgap: 0,
            textLgap: 0,
            textRgap: 0
        })
    },
    _init: function () {
        BI.BlankIconTextIconItem.superclass._init.apply(this, arguments);
        var o = this.options, c = this._const;
        this.text = BI.createWidget({
            type: "bi.label",
            textAlign: "left",
            hgap: o.textHgap,
            vgap: o.textVgap,
            lgap: o.textLgap,
            rgap: o.textRgap,
            text: o.text,
            value: o.value,
            keyword: o.keyword,
            height: o.height
        })

        var icon1 = BI.createWidget({
            type: "bi.center_adapt",
            cls: o.iconCls1,
            width: c.commonWidth,
            items: [{
                el: {
                    type: "bi.icon",
                    width: o.iconWidth,
                    height: o.iconHeight
                }
            }]
        })
        BI.createWidget({
            type: "bi.absolute",
            element: this,
            items: [{
                el: {
                    type: "bi.center_adapt",
                    cls: o.iconCls2,
                    width: c.commonWidth,
                    items: [{
                        el: {
                            type: "bi.icon",
                            width: o.iconWidth,
                            height: o.iconHeight
                        }
                    }]
                },
                top: 0,
                bottom: 0,
                right: 0
            }]
        })

        BI.createWidget(BI.extend({
            element: this
        }, BI.LogicFactory.createLogic("horizontal", BI.extend(o.logic, {
            items: BI.LogicFactory.createLogicItemsByDirection("left", {
                type: "bi.layout",
                width: o.blankWidth
            }, icon1, this.text, {
                type: "bi.layout",
                width: c.commonWidth
            })
        }))));
    },

    doClick: function () {
        BI.BlankIconTextIconItem.superclass.doClick.apply(this, arguments);
        if (this.isValid()) {
            this.fireEvent(BI.BlankIconTextIconItem.EVENT_CHANGE, this.getValue(), this);
        }
    },

    doRedMark: function () {
        this.text.doRedMark.apply(this.text, arguments);
    },

    unRedMark: function () {
        this.text.unRedMark.apply(this.text, arguments);
    },

    doHighLight: function () {
        this.text.doHighLight.apply(this.text, arguments);
    },

    unHighLight: function () {
        this.text.unHighLight.apply(this.text, arguments);
    },

    setValue: function () {
        if (!this.isReadOnly()) {
            this.text.setValue.apply(this.text, arguments);
        }
    },

    getValue: function () {
        return this.text.getValue();
    },

    setText: function () {
        this.text.setText.apply(this.text, arguments);
    },

    getText: function () {
        return this.text.getText();
    }
});
BI.BlankIconTextIconItem.EVENT_CHANGE = "EVENT_CHANGE";
$.shortcut("bi.blank_icon_text_icon_item", BI.BlankIconTextIconItem);/**
 * 带有一个占位
 *
 * Created by GUY on 2015/9/11.
 * @class BI.BlankIconTextItem
 * @extends BI.BasicButton
 */
BI.BlankIconTextItem = BI.inherit(BI.BasicButton, {
    _const: {
        commonWidth: 25
    },

    _defaultConfig: function () {
        var conf = BI.BlankIconTextItem.superclass._defaultConfig.apply(this, arguments);
        return BI.extend(conf, {
            baseCls: (conf.baseCls || "") + " bi-blank-icon-text-item",
            logic: {
                dynamic: false
            },
            cls: "close-ha-font",
            blankWidth: 0,
            iconHeight: null,
            iconWidth: null,
            textHgap: 0,
            textVgap: 0,
            textLgap: 0,
            textRgap: 0
        })
    },
    _init: function () {
        BI.BlankIconTextItem.superclass._init.apply(this, arguments);
        var o = this.options, c = this._const;
        var blank = BI.createWidget({
            type: "bi.layout",
            width: o.blankWidth
        })
        this.text = BI.createWidget({
            type: "bi.label",
            cls: "list-item-text",
            textAlign: "left",
            hgap: o.textHgap,
            vgap: o.textVgap,
            lgap: o.textLgap,
            rgap: o.textRgap,
            text: o.text,
            value: o.value,
            keyword: o.keyword,
            height: o.height
        })
        this.icon = BI.createWidget({
            type: "bi.center_adapt",
            width: c.commonWidth,
            items: [{
                el: {
                    type: "bi.icon",
                    width: o.iconWidth,
                    height: o.iconHeight
                }
            }]
        });

        BI.createWidget(BI.extend({
            element: this
        }, BI.LogicFactory.createLogic("horizontal", BI.extend(o.logic, {
            items: BI.LogicFactory.createLogicItemsByDirection("left", blank, this.icon, this.text)
        }))));
    },

    doClick: function () {
        BI.BlankIconTextItem.superclass.doClick.apply(this, arguments);
        if (this.isValid()) {
            this.fireEvent(BI.BlankIconTextItem.EVENT_CHANGE, this.getValue(), this);
        }
    },

    setValue: function () {
        if (!this.isReadOnly()) {
            this.text.setValue.apply(this.text, arguments);
        }
    },

    getValue: function () {
        return this.text.getValue();
    },

    setText: function () {
        this.text.setText.apply(this.text, arguments);
    },

    getText: function () {
        return this.text.getText();
    },

    doRedMark: function () {
        this.text.doRedMark.apply(this.text, arguments);
    },

    unRedMark: function () {
        this.text.unRedMark.apply(this.text, arguments);
    },

    doHighLight: function () {
        this.text.doHighLight.apply(this.text, arguments);
    },

    unHighLight: function () {
        this.text.unHighLight.apply(this.text, arguments);
    }
});
BI.BlankIconTextItem.EVENT_CHANGE = "EVENT_CHANGE";
$.shortcut("bi.blank_icon_text_item", BI.BlankIconTextItem);/**
 * guy
 * 两个icon和一行数 组成的一行listitem
 *
 * Created by GUY on 2015/9/9.
 * @class BI.IconTextIconItem
 * @extends BI.BasicButton
 */
BI.IconTextIconItem = BI.inherit(BI.BasicButton, {
    _const: {
        commonWidth: 25
    },

    _defaultConfig: function () {
        var conf = BI.IconTextIconItem.superclass._defaultConfig.apply(this, arguments);
        return BI.extend(conf, {
            baseCls: (conf.baseCls || "") + " bi-icon-text-icon-item",
            logic: {
                dynamic: false
            },
            iconCls1: "close-ha-font",
            iconCls2: "close-ha-font",
            iconHeight: null,
            iconWidth: null,
            textHgap: 0,
            textVgap: 0,
            textLgap: 0,
            textRgap: 0
        })
    },
    _init: function () {
        BI.IconTextIconItem.superclass._init.apply(this, arguments);
        var o = this.options, c = this._const;
        this.text = BI.createWidget({
            type: "bi.label",
            textAlign: "left",
            hgap: o.textHgap,
            vgap: o.textVgap,
            lgap: o.textLgap,
            rgap: o.textRgap,
            text: o.text,
            value: o.value,
            keyword: o.keyword,
            height: o.height
        })

        var icon1 = BI.createWidget({
            type: "bi.center_adapt",
            cls: o.iconCls1,
            width: c.commonWidth,
            items: [{
                el: {
                    type: "bi.icon",
                    width: o.iconWidth,
                    height: o.iconHeight
                }
            }]
        })
        var blank = BI.createWidget({
            type: "bi.layout",
            width: c.commonWidth
        })
        BI.createWidget({
            type: "bi.absolute",
            element: this,
            items: [{
                el: {
                    type: "bi.center_adapt",
                    cls: o.iconCls2,
                    width: c.commonWidth,
                    items: [{
                        el: {
                            type: "bi.icon",
                            width: o.iconWidth,
                            height: o.iconHeight
                        }
                    }]
                },
                top: 0,
                bottom: 0,
                right: 0
            }]
        })

        BI.createWidget(BI.extend({
            element: this
        }, BI.LogicFactory.createLogic("horizontal", BI.extend(o.logic, {
            items: BI.LogicFactory.createLogicItemsByDirection("left", icon1, this.text, blank)
        }))));
    },

    doClick: function () {
        BI.IconTextIconItem.superclass.doClick.apply(this, arguments);
        if (this.isValid()) {
            this.fireEvent(BI.IconTextIconItem.EVENT_CHANGE, this.getValue(), this);
        }
    },

    doRedMark: function () {
        this.text.doRedMark.apply(this.text, arguments);
    },

    unRedMark: function () {
        this.text.unRedMark.apply(this.text, arguments);
    },

    doHighLight: function () {
        this.text.doHighLight.apply(this.text, arguments);
    },

    unHighLight: function () {
        this.text.unHighLight.apply(this.text, arguments);
    },

    setValue: function () {
        if (!this.isReadOnly()) {
            this.text.setValue.apply(this.text, arguments);
        }
    },

    getValue: function () {
        return this.text.getValue();
    },

    setText: function () {
        this.text.setText.apply(this.text, arguments);
    },

    getText: function () {
        return this.text.getText();
    }
});
BI.IconTextIconItem.EVENT_CHANGE = "EVENT_CHANGE";
$.shortcut("bi.icon_text_icon_item", BI.IconTextIconItem);/**
 * guy
 *
 * Created by GUY on 2015/9/9.
 * @class BI.IconTextItem
 * @extends BI.BasicButton
 */
BI.IconTextItem = BI.inherit(BI.BasicButton, {
    _const: {
        commonWidth: 25
    },

    _defaultConfig: function () {
        var conf = BI.IconTextItem.superclass._defaultConfig.apply(this, arguments);
        return BI.extend(conf, {
            baseCls: (conf.baseCls || "") + " bi-icon-text-item",
            direction: BI.Direction.Left,
            logic: {
                dynamic: false
            },
            iconHeight: null,
            iconWidth: null,
            textHgap: 0,
            textVgap: 0,
            textLgap: 0,
            textRgap: 0
        })
    },
    _init: function () {
        BI.IconTextItem.superclass._init.apply(this, arguments);
        var o = this.options, c = this._const;
        this.text = BI.createWidget({
            type: "bi.label",
            cls: "list-item-text",
            textAlign: "left",
            hgap: o.textHgap,
            vgap: o.textVgap,
            lgap: o.textLgap,
            rgap: o.textRgap,
            text: o.text,
            value: o.value,
            keyword: o.keyword,
            height: o.height
        });
        this.icon = BI.createWidget({
            type: "bi.center_adapt",
            width: c.commonWidth,
            items: [{
                el: {
                    type: "bi.icon",
                    width: o.iconWidth,
                    height: o.iconHeight
                }
            }]
        });

        BI.createWidget(BI.extend({
            element: this
        }, BI.LogicFactory.createLogic(BI.LogicFactory.createLogicTypeByDirection(o.direction), BI.extend(o.logic, {
            items: BI.LogicFactory.createLogicItemsByDirection(o.direction, this.icon, this.text)
        }))));
    },

    setValue: function () {
        if (!this.isReadOnly()) {
            this.text.setValue.apply(this.text, arguments);
        }
    },

    getValue: function () {
        return this.text.getValue();
    },

    setText: function () {
        this.text.setText.apply(this.text, arguments);
    },

    getText: function () {
        return this.text.getText();
    },

    doClick: function () {
        BI.IconTextItem.superclass.doClick.apply(this, arguments);
        if (this.isValid()) {
            this.fireEvent(BI.IconTextItem.EVENT_CHANGE, this.getValue(), this);
        }
    },

    doRedMark: function () {
        this.text.doRedMark.apply(this.text, arguments);
    },

    unRedMark: function () {
        this.text.unRedMark.apply(this.text, arguments);
    },

    doHighLight: function () {
        this.text.doHighLight.apply(this.text, arguments);
    },

    unHighLight: function () {
        this.text.unHighLight.apply(this.text, arguments);
    }
});
BI.IconTextItem.EVENT_CHANGE = "EVENT_CHANGE";
$.shortcut("bi.icon_text_item", BI.IconTextItem);/**
 *
 * 图标的button
 *
 * Created by GUY on 2015/9/9.
 * @class BI.TextIconItem
 * @extends BI.BasicButton
 */
BI.TextIconItem = BI.inherit(BI.BasicButton, {
    _const: {
        commonWidth: 25
    },

    _defaultConfig: function () {
        var conf = BI.TextIconItem.superclass._defaultConfig.apply(this, arguments);
        return BI.extend(conf, {
            baseCls: (conf.baseCls || "") + " bi-text-icon-item",
            logic: {
                dynamic: false
            },
            cls: "close-ha-font",
            iconHeight: null,
            iconWidth: null,
            textHgap: 0,
            textVgap: 0,
            textLgap: 0,
            textRgap: 0
        })
    },
    _init: function () {
        BI.TextIconItem.superclass._init.apply(this, arguments);
        var o = this.options, c = this._const;
        this.text = BI.createWidget({
            type: "bi.label",
            cls: "list-item-text",
            textAlign: "left",
            hgap: o.textHgap,
            vgap: o.textVgap,
            lgap: o.textLgap,
            rgap: o.textRgap,
            text: o.text,
            value: o.value,
            keyword: o.keyword,
            height: o.height
        });
        this.icon = BI.createWidget({
            type: "bi.center_adapt",
            width: c.commonWidth,
            items: [{
                el: {
                    type: "bi.icon",
                    width: o.iconWidth,
                    height: o.iconHeight
                }
            }]
        });

        BI.createWidget(BI.extend({
            element: this
        }, BI.LogicFactory.createLogic("horizontal", BI.extend(o.logic, {
            items: BI.LogicFactory.createLogicItemsByDirection("left", this.text, this.icon)
        }))));
    },

    doClick: function () {
        BI.TextIconItem.superclass.doClick.apply(this, arguments);
        if (this.isValid()) {
            this.fireEvent(BI.TextIconItem.EVENT_CHANGE, this.getValue(), this);
        }
    },

    setValue: function () {
        if (!this.isReadOnly()) {
            this.text.setValue.apply(this.text, arguments);
        }
    },

    getValue: function () {
        return this.text.getValue();
    },

    setText: function () {
        this.text.setText.apply(this.text, arguments);
    },

    getText: function () {
        return this.text.getText();
    },

    doRedMark: function () {
        this.text.doRedMark.apply(this.text, arguments);
    },

    unRedMark: function () {
        this.text.unRedMark.apply(this.text, arguments);
    },

    doHighLight: function () {
        this.text.doHighLight.apply(this.text, arguments);
    },

    unHighLight: function () {
        this.text.unHighLight.apply(this.text, arguments);
    }
});
BI.TextIconItem.EVENT_CHANGE = "EVENT_CHANGE";
$.shortcut("bi.text_icon_item", BI.TextIconItem);/**
 * guy
 * 一个button和一行数 组成的一行listitem
 *
 * Created by GUY on 2015/9/9.
 * @class BI.TextItem
 * @extends BI.BasicButton
 */
BI.TextItem = BI.inherit(BI.BasicButton, {

    _defaultConfig: function () {
        var conf = BI.TextItem.superclass._defaultConfig.apply(this, arguments);
        return BI.extend(conf, {
            baseCls: (conf.baseCls || "") + " bi-text-item",
            textAlign: "left",
            whiteSpace: "nowrap",
            textHgap: 0,
            textVgap: 0,
            textLgap: 0,
            textRgap: 0
        })
    },
    _init: function () {
        BI.TextItem.superclass._init.apply(this, arguments);
        var o = this.options;
        this.text = BI.createWidget({
            type: "bi.label",
            element: this,
            textAlign: o.textAlign,
            whiteSpace: o.whiteSpace,
            textHeight: o.whiteSpace == "nowrap" ? o.height : o.textHeight,
            height: o.height,
            hgap: o.textHgap,
            vgap: o.textVgap,
            lgap: o.textLgap,
            rgap: o.textRgap,
            text: o.text,
            value: o.value,
            keyword: o.keyword,
            py: o.py
        });
    },

    doClick: function () {
        BI.TextItem.superclass.doClick.apply(this, arguments);
        if (this.isValid()) {
            this.fireEvent(BI.TextItem.EVENT_CHANGE, this.getValue(), this);
        }
    },

    doRedMark: function () {
        this.text.doRedMark.apply(this.text, arguments);
    },

    unRedMark: function () {
        this.text.unRedMark.apply(this.text, arguments);
    },

    doHighLight: function () {
        this.text.doHighLight.apply(this.text, arguments);
    },

    unHighLight: function () {
        this.text.unHighLight.apply(this.text, arguments);
    },

    setValue: function () {
        if (!this.isReadOnly()) {
            this.text.setValue.apply(this.text, arguments);
        }
    },

    getValue: function () {
        return this.text.getValue();
    },

    setText: function () {
        this.text.setText.apply(this.text, arguments);
    },

    getText: function () {
        return this.text.getText();
    }
});
BI.TextItem.EVENT_CHANGE = "EVENT_CHANGE";
$.shortcut("bi.text_item", BI.TextItem);/**
 * guy
 * Created by GUY on 2015/9/9.
 * @class BI.IconTextIconNode
 * @extends BI.NodeButton
 */
BI.IconTextIconNode = BI.inherit(BI.NodeButton, {
    _const: {
        commonWidth: 25
    },

    _defaultConfig: function () {
        var conf = BI.IconTextIconNode.superclass._defaultConfig.apply(this, arguments);
        return BI.extend(conf, {
            baseCls: (conf.baseCls || "") + " bi-icon-text-icon-node",
            logic: {
                dynamic: false
            },
            iconCls1: "close-ha-font",
            iconCls2: "close-ha-font",
            iconHeight: null,
            iconWidth: null,
            textHgap: 0,
            textVgap: 0,
            textLgap: 0,
            textRgap: 0
        })
    },
    _init: function () {
        BI.IconTextIconNode.superclass._init.apply(this, arguments);
        var o = this.options, c = this._const;
        this.text = BI.createWidget({
            type: "bi.label",
            textAlign: "left",
            hgap: o.textHgap,
            vgap: o.textVgap,
            lgap: o.textLgap,
            rgap: o.textRgap,
            text: o.text,
            value: o.value,
            keyword: o.keyword,
            height: o.height
        })

        var icon1 = BI.createWidget({
            type: "bi.center_adapt",
            cls: o.iconCls1,
            width: c.commonWidth,
            items: [{
                el: {
                    type: "bi.icon",
                    width: o.iconWidth,
                    height: o.iconHeight
                }
            }]
        })
        var blank = BI.createWidget({
            type: "bi.layout",
            width: c.commonWidth
        })
        BI.createWidget({
            type: "bi.absolute",
            element: this,
            items: [{
                el: {
                    type: "bi.center_adapt",
                    cls: o.iconCls2,
                    width: c.commonWidth,
                    items: [{
                        el: {
                            type: "bi.icon",
                            width: o.iconWidth,
                            height: o.iconHeight
                        }
                    }]
                },
                top: 0,
                bottom: 0,
                right: 0
            }]
        })

        BI.createWidget(BI.extend({
            element: this
        }, BI.LogicFactory.createLogic("horizontal", BI.extend(o.logic, {
            items: BI.LogicFactory.createLogicItemsByDirection("left", icon1, this.text, blank)
        }))));
    },

    doClick: function () {
        BI.IconTextIconNode.superclass.doClick.apply(this, arguments);
        if (this.isValid()) {
            this.fireEvent(BI.IconTextIconNode.EVENT_CHANGE, this.getValue(), this);
        }
    },

    doRedMark: function () {
        this.text.doRedMark.apply(this.text, arguments);
    },

    unRedMark: function () {
        this.text.unRedMark.apply(this.text, arguments);
    },

    setValue: function () {
        if (!this.isReadOnly()) {
            this.text.setValue.apply(this.text, arguments);
        }
    },

    getValue: function () {
        return this.text.getValue();
    },

    setText: function () {
        this.text.setText.apply(this.text, arguments);
    },

    getText: function () {
        return this.text.getText();
    }
});
BI.IconTextIconNode.EVENT_CHANGE = "EVENT_CHANGE";
$.shortcut("bi.icon_text_icon_node", BI.IconTextIconNode);/**
 * guy
 * Created by GUY on 2015/9/9.
 * @class BI.IconTextNode
 * @extends BI.NodeButton
 */
BI.IconTextNode = BI.inherit(BI.NodeButton, {
    _const: {
        commonWidth: 25
    },

    _defaultConfig: function () {
        var conf = BI.IconTextNode.superclass._defaultConfig.apply(this, arguments);
        return BI.extend(conf, {
            baseCls: (conf.baseCls || "") + " bi-icon-text-node",
            logic: {
                dynamic: false
            },
            cls: "close-ha-font",
            iconHeight: null,
            iconWidth: null,
            textHgap: 0,
            textVgap: 0,
            textLgap: 0,
            textRgap: 0
        })
    },
    _init: function () {
        BI.IconTextNode.superclass._init.apply(this, arguments);
        var o = this.options, c = this._const;
        this.text = BI.createWidget({
            type: "bi.label",
            cls: "list-item-text",
            textAlign: "left",
            hgap: o.textHgap,
            vgap: o.textVgap,
            lgap: o.textLgap,
            rgap: o.textRgap,
            text: o.text,
            value: o.value,
            keyword: o.keyword,
            height: o.height
        })
        this.icon = BI.createWidget({
            type: "bi.center_adapt",
            width: c.commonWidth,
            items: [{
                el: {
                    type: "bi.icon",
                    width: o.iconWidth,
                    height: o.iconHeight
                }
            }]
        })

        BI.createWidget(BI.extend({
            element: this
        }, BI.LogicFactory.createLogic("horizontal", BI.extend(o.logic, {
            items: BI.LogicFactory.createLogicItemsByDirection("left", this.icon, this.text)
        }))));
    },

    setValue: function () {
        if (!this.isReadOnly()) {
            this.text.setValue.apply(this.text, arguments);
        }
    },

    getValue: function () {
        return this.text.getValue();
    },

    setText: function () {
        this.text.setText.apply(this.text, arguments);
    },

    getText: function () {
        return this.text.getText();
    },

    doClick: function () {
        BI.IconTextNode.superclass.doClick.apply(this, arguments);
        if (this.isValid()) {
            this.fireEvent(BI.IconTextNode.EVENT_CHANGE, this.getValue(), this);
        }
    },

    doRedMark: function () {
        this.text.doRedMark.apply(this.text, arguments);
    },

    unRedMark: function () {
        this.text.unRedMark.apply(this.text, arguments);
    }
});
BI.IconTextNode.EVENT_CHANGE = "EVENT_CHANGE";
$.shortcut("bi.icon_text_node", BI.IconTextNode);/**
 * Created by GUY on 2015/9/9.
 * @class BI.TextIconNode
 * @extends BI.NodeButton
 */
BI.TextIconNode = BI.inherit(BI.NodeButton, {
    _const: {
        commonWidth: 25
    },

    _defaultConfig: function () {
        var conf = BI.TextIconNode.superclass._defaultConfig.apply(this, arguments);
        return BI.extend(conf, {
            baseCls: (conf.baseCls || "") + " bi-text-icon-node",
            logic: {
                dynamic: false
            },
            cls: "close-ha-font",
            iconHeight: null,
            iconWidth: null,
            textHgap: 0,
            textVgap: 0,
            textLgap: 0,
            textRgap: 0
        })
    },
    _init: function () {
        BI.TextIconNode.superclass._init.apply(this, arguments);
        var o = this.options, c = this._const;
        this.text = BI.createWidget({
            type: "bi.label",
            cls: "list-item-text",
            textAlign: "left",
            hgap: o.textHgap,
            vgap: o.textVgap,
            lgap: o.textLgap,
            rgap: o.textRgap,
            text: o.text,
            value: o.value,
            keyword: o.keyword,
            height: o.height
        })
        this.icon = BI.createWidget({
            type: "bi.center_adapt",
            width: c.commonWidth,
            items: [{
                el: {
                    type: "bi.icon",
                    width: o.iconWidth,
                    height: o.iconHeight
                }
            }]
        });

        BI.createWidget(BI.extend({
            element: this
        }, BI.LogicFactory.createLogic("horizontal", BI.extend(o.logic, {
            items: BI.LogicFactory.createLogicItemsByDirection("left", this.text, this.icon)
        }))));
    },

    doClick: function () {
        BI.TextIconNode.superclass.doClick.apply(this, arguments);
        if (this.isValid()) {
            this.fireEvent(BI.TextIconNode.EVENT_CHANGE, this.getValue(), this);
        }
    },

    setValue: function () {
        if (!this.isReadOnly()) {
            this.text.setValue.apply(this.text, arguments);
        }
    },

    getValue: function () {
        return this.text.getValue();
    },

    setText: function () {
        this.text.setText.apply(this.text, arguments);
    },

    getText: function () {
        return this.text.getText();
    },

    doRedMark: function () {
        this.text.doRedMark.apply(this.text, arguments);
    },

    unRedMark: function () {
        this.text.unRedMark.apply(this.text, arguments);
    }
});
BI.TextIconNode.EVENT_CHANGE = "EVENT_CHANGE";
$.shortcut("bi.text_icon_node", BI.TextIconNode);/**
 * guy
 *
 * Created by GUY on 2015/9/9.
 * @class BI.TextNode
 * @extends BI.NodeButton
 */
BI.TextNode = BI.inherit(BI.NodeButton, {

    _defaultConfig: function () {
        var conf = BI.TextNode.superclass._defaultConfig.apply(this, arguments);
        return BI.extend(conf, {
            baseCls: (conf.baseCls || "") + " bi-text-node",
            textAlign: "left",
            whiteSpace: "nowrap",
            textHgap: 0,
            textVgap: 0,
            textLgap: 0,
            textRgap: 0
        })
    },
    _init: function () {
        BI.TextNode.superclass._init.apply(this, arguments);
        var o = this.options;
        this.text = BI.createWidget({
            type: "bi.label",
            element: this,
            textAlign: o.textAlign,
            whiteSpace: o.whiteSpace,
            textHeight: o.whiteSpace == "nowrap" ? o.height : o.textHeight,
            height: o.height,
            hgap: o.textHgap,
            vgap: o.textVgap,
            lgap: o.textLgap,
            rgap: o.textRgap,
            text: o.text,
            value: o.value,
            keyword: o.keyword,
            py: o.py
        });
    },

    doClick: function () {
        BI.TextNode.superclass.doClick.apply(this, arguments);
        if (this.isValid()) {
            this.fireEvent(BI.TextNode.EVENT_CHANGE, this.getValue(), this);
        }
    },

    doRedMark: function () {
        this.text.doRedMark.apply(this.text, arguments);
    },

    unRedMark: function () {
        this.text.unRedMark.apply(this.text, arguments);
    },

    setValue: function () {
        if (!this.isReadOnly()) {
            this.text.setValue.apply(this.text, arguments);
        }
    },

    getValue: function () {
        return this.text.getValue();
    },

    setText: function () {
        this.text.setText.apply(this.text, arguments);
    },

    getText: function () {
        return this.text.getText();
    }
});
BI.TextNode.EVENT_CHANGE = "EVENT_CHANGE";
$.shortcut("bi.text_node", BI.TextNode);/**
 *
 * Created by GUY on 2016/1/15.
 * @class BI.CodeEditor
 * @extends BI.Single
 */
BI.CodeEditor = BI.inherit(BI.Single, {
    _defaultConfig: function () {
        return $.extend(BI.CodeEditor.superclass._defaultConfig.apply(), {
            baseCls: 'bi-code-editor',
            value: '',
            watermark: ""
        });
    },
    _init: function () {
        BI.CodeEditor.superclass._init.apply(this, arguments);
        var o = this.options, self = this;
        this.editor = CodeMirror(this.element[0], {
            textWrapping: true,
            lineWrapping: true,
            lineNumbers: false
        });
        this.editor.on("change", function (cm, change) {
            BI.nextTick(function () {
                self.fireEvent(BI.CodeEditor.EVENT_CHANGE)
            });
        });

        this.editor.on("focus", function () {
            watermark.setVisible(false);
            self.fireEvent(BI.CodeEditor.EVENT_FOCUS);
        });

        this.editor.on("blur", function () {
            watermark.setVisible(BI.isEmptyString(self.getValue()));
            self.fireEvent(BI.CodeEditor.EVENT_BLUR);
        });

        // this.editor.on("blur", function () {
        //     self.editor.execCommand("goLineEnd");
        // });

        //水印
        var watermark = BI.createWidget({
            type: "bi.label",
            text: o.watermark,
            cls: "bi-water-mark",
            whiteSpace: "nowrap",
            textAlign: "left"
        });
        watermark.element.bind(
            "mousedown", function (e) {
                self.insertString("");
                self.editor.focus();
                e.stopEvent();
            }
        );
        watermark.element.bind("click", function (e) {
            self.editor.focus();
            e.stopEvent();
        });
        BI.createWidget({
            type: "bi.absolute",
            element: this,
            items: [{
                el: watermark,
                top: 0,
                left: 5
            }]
        });

        if (BI.isKey(o.value)) {
            BI.nextTick(function () {
                self.setValue(o.value);
            });
        }
    },

    setEnable: function (b) {
        BI.CodeEditor.superclass.setEnable.apply(this, arguments);
        this.editor.setOption("readOnly", b === true ? false : "nocursor")
    },

    insertParam: function(param){
        var from = this.editor.getCursor();
        this.editor.replaceSelection(param);
        var to = this.editor.getCursor();
        this.editor.markText(from, to, {className: 'param', atomic: true});
        this.editor.replaceSelection(" ");
        this.editor.focus();
    },

    insertString: function(str){
        this.editor.replaceSelection(str);
        this.editor.focus();
    },

    getValue: function () {
        return this.editor.getValue("\n", function (line) {
            var rawText = line.text, value = line.text, num = 0;
            value.text = rawText;
            _.forEach(line.markedSpans, function (i, ms) {
                switch (i.marker.className) {
                    case "param":
                        var fieldNameLength = i.to - i.from;
                        value = value.substr(0, i.from + num) + "$\{" + value.substr(i.from + num, fieldNameLength) + "\}" + value.substr(i.to + num, value.length);
                        num += 3;
                        break;
                }
            });
            return value;
        });
    },

    _analyzeContent: function (v) {
        var regx = /\$[\{][^\}]*[\}]|(\s+)|\w*\w|\$\{[^\$\(\)\+\-\*\/)\$,]*\w\}|\$\{[^\$\(\)\+\-\*\/]*\w\}|\$\{[^\$\(\)\+\-\*\/]*[\u4e00-\u9fa5]\}|\w|(.)|\n/g;
        return v.match(regx);
    },

    setValue: function (v) {
        var self = this, result;
        this.refresh();
        self.editor.setValue("");
        result = this._analyzeContent(v || "");
        BI.each(result, function (i, item) {
            var fieldRegx = /\$[\{][^\}]*[\}]/;
            var str = item.match(fieldRegx);
            if (BI.isNotEmptyArray(str)) {
                self.insertParam(str[0].substring(2, item.length - 1));
            } else {
                self.insertString(item);
            }
        })
    },

    refresh: function(){
        var self = this;
        BI.nextTick(function () {
            self.editor.refresh();
        });
    }
});
BI.CodeEditor.EVENT_CHANGE = "EVENT_CHANGE";
BI.CodeEditor.EVENT_BLUR = "EVENT_BLUR";
BI.CodeEditor.EVENT_FOCUS = "EVENT_FOCUS";
$.shortcut("bi.code_editor", BI.CodeEditor);/**
 * Created by GUY on 2015/4/15.
 * @class BI.Editor
 * @extends BI.Single
 */
BI.Editor = BI.inherit(BI.Single, {
    _defaultConfig: function () {
        var conf = BI.Editor.superclass._defaultConfig.apply(this, arguments);
        return BI.extend(conf, {
            baseCls: "bi-editor",
            hgap: 4,
            vgap: 2,
            lgap: 0,
            rgap: 0,
            tgap: 0,
            bgap: 0,
            tipType: "warning",
            inputType: "text",
            validationChecker: BI.emptyFn,
            quitChecker: BI.emptyFn,
            mouseOut: false,
            allowBlank: false,
            watermark: "",
            errorText: ""
        })
    },

    _init: function () {
        BI.Editor.superclass._init.apply(this, arguments);
        var self = this, o = this.options;
        this.editor = this.addWidget(BI.createWidget({
            type: "bi.input",
            element: "<input type='" + o.inputType + "'/>",
            watermark: o.watermark,
            validationChecker: o.validationChecker,
            quitChecker: o.quitChecker,
            mouseOut: o.mouseOut,
            allowBlank: o.allowBlank
        }));
        this.editor.element.css({
            "width": "100%",
            "height": "100%",
            "border": "none",
            "outline": "none",
            "padding": "0",
            "margin": "0"
        });
        if (BI.isKey(this.options.watermark)) {
            this.watermark = BI.createWidget({
                type: "bi.label",
                cls: "bi-water-mark",
                text: this.options.watermark,
                height: this.options.height,
                forceCenter: true,
                height: o.height - 2 * (o.vgap + o.tgap),
                whiteSpace: "nowrap",
                textAlign: "left"
            });
            this.watermark.element.bind({
                mousedown: function (e) {
                    if (self.isEnabled()) {
                        self.editor.isEditing() || self.editor.focus();
                    } else {
                        self.editor.isEditing() && self.editor.blur();
                    }
                    e.stopEvent();
                }
            });
            this.watermark.element.bind("click", function (e) {
                if (self.isEnabled()) {
                    self.editor.isEditing() || self.editor.focus();
                } else {
                    self.editor.isEditing() && self.editor.blur();
                }
                e.stopEvent();
            });
            this.watermark.element.css({
                position: "absolute",
                left: "3px",
                right: "3px",
                top: "0px",
                bottom: "0px"
            });
        }
        var items = [{
            el: {
                type: "bi.default",
                items: this.watermark ? [this.editor, this.watermark] : [this.editor]
            },
            left: o.hgap + o.lgap,
            right: o.hgap + o.rgap,
            top: o.vgap + o.tgap,
            bottom: o.vgap + o.bgap
        }];

        BI.createWidget({
            type: "bi.absolute",
            element: this,
            items: items
        });
        this.editor.on(BI.Controller.EVENT_CHANGE, function () {
            self.fireEvent(BI.Controller.EVENT_CHANGE, arguments);
        });
        this.editor.on(BI.Input.EVENT_FOCUS, function () {
            self._checkError();
            self.element.addClass("bi-editor-focus");
            self.fireEvent(BI.Editor.EVENT_FOCUS, arguments);
        });
        this.editor.on(BI.Input.EVENT_BLUR, function () {
            self.setErrorVisible(false);
            self.element.removeClass("bi-editor-focus");
            self.fireEvent(BI.Editor.EVENT_BLUR, arguments);
        });
        this.editor.on(BI.Input.EVENT_CLICK, function () {
            self.fireEvent(BI.Editor.EVENT_CLICK, arguments);
        });
        this.editor.on(BI.Input.EVENT_CHANGE, function () {
            self.fireEvent(BI.Editor.EVENT_CHANGE, arguments);
        });
        this.editor.on(BI.Input.EVENT_KEY_DOWN, function (v) {
            self.fireEvent(BI.Editor.EVENT_KEY_DOWN, arguments);
        });
        this.editor.on(BI.Input.EVENT_QUICK_DOWN, function (v) {
            self.watermark && self.watermark.invisible();
        });

        this.editor.on(BI.Input.EVENT_VALID, function () {
            self._checkWaterMark();
            self.setErrorVisible(false);
            self.fireEvent(BI.Editor.EVENT_VALID, arguments);
        });
        this.editor.on(BI.Input.EVENT_ERROR, function () {
            self._checkWaterMark();
            self.fireEvent(BI.Editor.EVENT_ERROR, arguments);
            self.setErrorVisible(self.isEditing());
        });
        this.editor.on(BI.Input.EVENT_RESTRICT, function () {
            self._checkWaterMark();
            var tip = self.setErrorVisible(true);
            tip && tip.element.fadeOut(100, function () {
                tip.element.fadeIn(100);
            });
            self.fireEvent(BI.Editor.EVENT_RESTRICT, arguments);
        });
        this.editor.on(BI.Input.EVENT_EMPTY, function () {
            self._checkWaterMark();
            self.fireEvent(BI.Editor.EVENT_EMPTY, arguments);
        });
        this.editor.on(BI.Input.EVENT_ENTER, function () {
            self.fireEvent(BI.Editor.EVENT_ENTER, arguments);
        });
        this.editor.on(BI.Input.EVENT_SPACE, function () {
            self.fireEvent(BI.Editor.EVENT_SPACE, arguments);
        });
        this.editor.on(BI.Input.EVENT_BACKSPACE, function () {
            self.fireEvent(BI.Editor.EVENT_BACKSPACE, arguments);
        });
        this.editor.on(BI.Input.EVENT_REMOVE, function () {
            self.fireEvent(BI.Editor.EVENT_REMOVE, arguments);
        });
        this.editor.on(BI.Input.EVENT_START, function () {
            self.fireEvent(BI.Editor.EVENT_START, arguments);
        });
        this.editor.on(BI.Input.EVENT_PAUSE, function () {
            self.fireEvent(BI.Editor.EVENT_PAUSE, arguments);
        });
        this.editor.on(BI.Input.EVENT_STOP, function () {
            self.fireEvent(BI.Editor.EVENT_STOP, arguments);
        });
        this.editor.on(BI.Input.EVENT_CONFIRM, function () {
            self.fireEvent(BI.Editor.EVENT_CONFIRM, arguments);
        });
        this.element.click(function (e) {
            e.stopPropagation();
            return false;
        });
        if (BI.isKey(this.options.value) || BI.isEmptyString(this.options.value)) {
            this.setValue(this.options.value);
        } else {
            this._checkWaterMark();
        }
    },

    _checkToolTip: function () {
        var o = this.options;
        var errorText = o.errorText;
        if (BI.isFunction(errorText)) {
            errorText = errorText(this.editor.getValue());
        }
        if (BI.isKey(errorText)) {
            if (!this.isEnabled() || this.isValid() || (BI.Bubbles.has(this.getName()) && BI.Bubbles.get(this.getName()).isVisible())) {
                this.setTitle("");
            } else {
                this.setTitle(errorText);
            }
        }
    },

    _checkError: function () {
        this.setErrorVisible(this.isEnabled() && !this.isValid());
        this._checkToolTip();
    },

    _checkWaterMark: function () {
        var o = this.options;
        if (!this.disabledWarterMark && this.editor.getValue() === "" && BI.isKey(o.watermark)) {
            this.watermark && this.watermark.visible();
        } else {
            this.watermark && this.watermark.invisible();
        }
    },

    setErrorText: function (text) {
        this.options.errorText = text;
    },

    getErrorText: function () {
        return this.options.errorText;
    },

    setErrorVisible: function (b) {
        var o = this.options;
        var errorText = o.errorText;
        if (BI.isFunction(errorText)) {
            errorText = errorText(this.editor.getValue());
        }
        if (!this.disabledError && BI.isKey(errorText)) {
            BI.Bubbles[b ? "show" : "hide"](this.getName(), errorText, this);
            this._checkToolTip();
            return BI.Bubbles.get(this.getName());
        }
    },

    disableError: function () {
        this.disabledError = true;
        this._checkError();
    },

    enableError: function () {
        this.disabledError = false;
        this._checkError();
    },

    disableWarterMark: function () {
        this.disabledWarterMark = true;
        this._checkWaterMark();
    },

    enableWarterMark: function () {
        this.disabledWarterMark = false;
        this._checkWaterMark();
    },

    focus: function () {
        this.element.addClass("text-editor-focus");
        this.editor.focus();
    },

    blur: function () {
        this.element.removeClass("text-editor-focus");
        this.editor.blur();
    },

    selectAll: function () {
        this.editor.selectAll();
    },

    onKeyDown: function (k) {
        this.editor.onKeyDown(k);
    },

    setValue: function (v) {
        BI.Editor.superclass.setValue.apply(this, arguments);
        this.editor.setValue(v);
        this._checkError();
        this._checkWaterMark();
    },

    getLastValidValue: function () {
        return this.editor.getLastValidValue();
    },

    resetLastValidValue: function () {
        this.editor.resetLastValidValue();
    },

    getValue: function () {
        if (!this.isValid()) {
            return BI.trim(this.editor.getLastValidValue());
        }
        return BI.trim(this.editor.getValue());
    },

    setValid: function (b) {
        BI.Editor.superclass.setValid.apply(this, arguments);
        this.editor.setValid(b);
    },

    isEditing: function () {
        return this.editor.isEditing();
    },

    isValid: function () {
        return this.editor.isValid();
    },

    setEnable: function (b) {
        BI.Editor.superclass.setEnable.apply(this, arguments);
        this.editor && this.editor.setEnable(b);
        this.watermark && this.watermark.setEnable(b);
    }
});
BI.Editor.EVENT_CHANGE = "EVENT_CHANGE";
BI.Editor.EVENT_FOCUS = "EVENT_FOCUS";
BI.Editor.EVENT_BLUR = "EVENT_BLUR";
BI.Editor.EVENT_CLICK = "EVENT_CLICK";
BI.Editor.EVENT_KEY_DOWN = "EVENT_KEY_DOWN";
BI.Editor.EVENT_SPACE = "EVENT_SPACE";
BI.Editor.EVENT_BACKSPACE = "EVENT_BACKSPACE";

BI.Editor.EVENT_START = "EVENT_START";
BI.Editor.EVENT_PAUSE = "EVENT_PAUSE";
BI.Editor.EVENT_STOP = "EVENT_STOP";
BI.Editor.EVENT_CONFIRM = "EVENT_CONFIRM";
BI.Editor.EVENT_VALID = "EVENT_VALID";
BI.Editor.EVENT_ERROR = "EVENT_ERROR";
BI.Editor.EVENT_ENTER = "EVENT_ENTER";
BI.Editor.EVENT_RESTRICT = "EVENT_RESTRICT";
BI.Editor.EVENT_REMOVE = "EVENT_REMOVE";
BI.Editor.EVENT_EMPTY = "EVENT_EMPTY";

$.shortcut("bi.editor", BI.Editor);/**
 * 多文件
 *
 * Created by GUY on 2016/4/13.
 * @class BI.MultifileEditor
 * @extends BI.Single
 * @abstract
 */
BI.MultifileEditor = BI.inherit(BI.Single, {
    _defaultConfig: function () {
        var conf = BI.MultifileEditor.superclass._defaultConfig.apply(this, arguments);
        return BI.extend(conf, {
            baseCls: (conf.baseCls || "") + " bi-multifile-editor",
            multiple: false,
            maxSize: 1024 * 1024,
            accept: "",
            url: ""
        })
    },

    _init: function () {
        var self = this, o = this.options;
        BI.MultifileEditor.superclass._init.apply(this, arguments);
        this.file = BI.createWidget({
            type: "bi.file",
            cls: "multifile-editor",
            width: "100%",
            height: "100%",
            name: o.name,
            url: o.url,
            multiple: o.multiple,
            accept: o.accept,
            maxSize: o.maxSize
        });
        this.file.on(BI.File.EVENT_CHANGE, function () {
            self.fireEvent(BI.MultifileEditor.EVENT_CHANGE, arguments);
        });
        this.file.on(BI.File.EVENT_UPLOADSTART, function () {
            self.fireEvent(BI.MultifileEditor.EVENT_UPLOADSTART, arguments);
        });
        this.file.on(BI.File.EVENT_ERROR, function () {
            self.fireEvent(BI.MultifileEditor.EVENT_ERROR, arguments);
        });
        this.file.on(BI.File.EVENT_PROGRESS, function () {
            self.fireEvent(BI.MultifileEditor.EVENT_PROGRESS, arguments);
        });
        this.file.on(BI.File.EVENT_UPLOADED, function () {
            self.fireEvent(BI.MultifileEditor.EVENT_UPLOADED, arguments);
        });

        BI.createWidget({
            type: "bi.absolute",
            element: this,
            items: [{
                el: {
                    type: "bi.adaptive",
                    scrollable: false,
                    items: [this.file]
                },
                top: 0,
                right: 0,
                left: 0,
                bottom: 0
            }]
        });
    },

    select: function () {
        this.file.select();
    },

    getValue: function () {
        return this.file.getValue();
    },

    upload: function () {
        this.file.upload();
    },

    reset: function () {
        this.file.reset();
    },

    setEnable: function (enable) {
        BI.MultiFile.superclass.setEnable.apply(this, arguments);
        this.file.setEnable(enable);
    }
});
BI.MultifileEditor.EVENT_CHANGE = "MultifileEditor.EVENT_CHANGE";
BI.MultifileEditor.EVENT_UPLOADSTART = "MultifileEditor.EVENT_UPLOADSTART";
BI.MultifileEditor.EVENT_ERROR = "MultifileEditor.EVENT_ERROR";
BI.MultifileEditor.EVENT_PROGRESS = "MultifileEditor.EVENT_PROGRESS";
BI.MultifileEditor.EVENT_UPLOADED = "MultifileEditor.EVENT_UPLOADED";
$.shortcut("bi.multifile_editor", BI.MultifileEditor);/**
 *
 * Created by GUY on 2016/1/18.
 * @class BI.TextAreaEditor
 * @extends BI.Single
 */
BI.TextAreaEditor = BI.inherit(BI.Single, {
    _defaultConfig: function () {
        return $.extend(BI.TextAreaEditor.superclass._defaultConfig.apply(), {
            baseCls: 'bi-textarea-editor',
            value: ''
        });
    },
    _init: function () {
        BI.TextAreaEditor.superclass._init.apply(this, arguments);
        var o = this.options, self = this;
        this.content = BI.createWidget({
            type: "bi.layout",
            tagName: "textarea",
            width: "100%",
            height: "100%",
            cls: "textarea-editor-content display-block"
        });
        this.content.element.css({"resize": "none"});
        BI.createWidget({
            type: "bi.absolute",
            element: this,
            items: [{
                el: {
                    type: "bi.adaptive",
                    items: [this.content]
                },
                left: 0,
                right: 3,
                top: 0,
                bottom: 5
            }]
        });

        this.content.element.on("input propertychange", function (e) {
            self._checkWaterMark();
            self.fireEvent(BI.TextAreaEditor.EVENT_CHANGE);
        });

        this.content.element.focus(function () {
            if (self.isValid()) {
                self._focus();
                self.fireEvent(BI.TextAreaEditor.EVENT_FOCUS);
            }
            $(document).bind("mousedown." + self.getName(), function (e) {
                if (BI.DOM.isExist(self) && !self.element.__isMouseInBounds__(e)) {
                    $(document).unbind("mousedown." + self.getName());
                    self.content.element.blur();
                }
            });
        });
        this.content.element.blur(function () {
            if (self.isValid()) {
                self._blur();
                self.fireEvent(BI.TextAreaEditor.EVENT_BLUR);
            }
            $(document).unbind("mousedown." + self.getName());
        });
        if (BI.isKey(o.value)) {
            self.setValue(o.value);
        }
        if (BI.isNotNull(o.style)) {
            self.setValue(o.style);
        }
        this._checkWaterMark();
    },

    _checkWaterMark: function () {
        var self = this, o = this.options;
        var val = this.getValue();
        if (BI.isNotEmptyString(val)) {
            this.watermark && this.watermark.destroy();
            this.watermark = null;
        } else {
            if (BI.isNotEmptyString(o.watermark)) {
                if (!this.watermark) {
                    this.watermark = BI.createWidget({
                        type: "bi.text_button",
                        cls: "bi-water-mark",
                        textAlign: "left",
                        height: 30,
                        text: o.watermark,
                        invalid: o.invalid,
                        disabled: o.disabled
                    });
                    this.watermark.on(BI.TextButton.EVENT_CHANGE, function () {
                        self.focus();
                    });
                    BI.createWidget({
                        type: 'bi.absolute',
                        element: this,
                        items: [{
                            el: this.watermark,
                            left: 0,
                            top: 0,
                            right: 0
                        }]
                    })
                } else {
                    this.watermark.setText(o.watermark);
                    this.watermark.setValid(!o.invalid);
                    this.watermark.setEnable(!o.disabled);
                }
            }
        }
    },

    _focus: function () {
        this.content.element.addClass("textarea-editor-focus");
        this._checkWaterMark();
    },

    _blur: function () {
        this.content.element.removeClass("textarea-editor-focus");
        this._checkWaterMark();
    },

    focus: function () {
        this._focus();
        this.content.element.focus();
    },

    blur: function () {
        this._blur();
        this.content.element.blur();
    },

    getValue: function () {
        return this.content.element.val();
    },

    setValue: function (value) {
        this.content.element.val(value);
    },

    setStyle: function (style) {
        this.style = style;
        this.element.css(style);
        this.content.element.css(style)
    },

    getStyle: function () {
        return this.style;
    },

    setValid: function (b) {
        BI.TextAreaEditor.superclass.setValid.apply(this, arguments);
        this.content.setValid(b);
        this.watermark && this.watermark.setValid(b);
    },

    setEnable: function (b) {
        BI.TextAreaEditor.superclass.setEnable.apply(this, arguments);
        this.content.setEnable(b);
        this.watermark && this.watermark.setEnable(b);
    }
});
BI.TextAreaEditor.EVENT_CHANGE = "EVENT_CHANGE";
BI.TextAreaEditor.EVENT_BLUR = "EVENT_BLUR";
BI.TextAreaEditor.EVENT_FOCUS = "EVENT_FOCUS";
$.shortcut("bi.textarea_editor", BI.TextAreaEditor);/**
 * guy 图标
 * @class BI.Icon
 * @extends BI.Single
 */
BI.Icon = BI.inherit(BI.Single, {
    _defaultConfig: function () {
        var conf = BI.Icon.superclass._defaultConfig.apply(this, arguments);
        return BI.extend(conf, {
            tagName: "i",
            baseCls: (conf.baseCls || "") + " x-icon b-font horizon-center display-block"
        })
    },
    _init: function () {
        BI.Icon.superclass._init.apply(this, arguments);
    }
});
$.shortcut("bi.icon", BI.Icon);/**
 * @class BI.Iframe
 * @extends BI.Single
 * @abstract
 * Created by GameJian on 2016/3/2.
 */
BI.Iframe = BI.inherit(BI.Single, {
    _defaultConfig: function () {
        var conf = BI.Iframe.superclass._defaultConfig.apply(this, arguments);
        return BI.extend(conf, {
            baseCls: (conf.baseCls || "") + " bi-iframe",
            src: "",
            width: "100%",
            height: "100%"
        })
    },

    _init: function () {
        var o = this.options;
        this.options.element = $("<iframe frameborder='0' src='" + o.src + "'>");
        BI.Iframe.superclass._init.apply(this, arguments);
    },

    setSrc: function (src) {
        this.options.src = src;
        this.element.attr("src", src);
    },

    getSrc: function () {
        return this.options.src;
    },

    getWidth: function () {
        return this.options.width
    },

    getHeight: function () {
        return this.options.height
    }
});

$.shortcut("bi.iframe", BI.Iframe);/**
 * ͼƬ
 *
 * Created by GUY on 2016/1/26.
 * @class BI.Img
 * @extends BI.Single
 * @abstract
 */
BI.Img = BI.inherit(BI.Single, {
    _defaultConfig: function () {
        var conf = BI.Img.superclass._defaultConfig.apply(this, arguments);
        return BI.extend(conf, {
            baseCls: (conf.baseCls || "") + " bi-img display-block",
            src: "",
            width: "100%",
            height: "100%"
        })
    },

    _init: function () {
        var o = this.options;
        this.options.element = $("<img src='" + o.src + "'>");
        BI.Img.superclass._init.apply(this, arguments);
    },

    setSrc: function (src) {
        this.options.src = src;
        this.element.attr("src", src);
    },

    getSrc: function () {
        return this.options.src;
    }
});

$.shortcut("bi.img", BI.Img);
/**
 * guy
 * @extends BI.Single
 * @type {*|void|Object}
 */
BI.Checkbox = BI.inherit(BI.IconButton, {
    _defaultConfig: function() {
        var conf = BI.Checkbox.superclass._defaultConfig.apply(this,arguments);
        return BI.extend(conf, {
            baseCls: (conf.baseCls || "") + " bi-checkbox check-box-icon",
            selected: false,
            handler: BI.emptyFn,
            width: 16,
            height: 16,
            iconWidth: 16,
            iconHeight: 16
        })
    },

    _init : function() {
        BI.Checkbox.superclass._init.apply(this, arguments);
    },

    doClick: function(){
        BI.Checkbox.superclass.doClick.apply(this, arguments);
        if(this.isValid()){
            this.fireEvent(BI.Checkbox.EVENT_CHANGE);
        }
    }
});
BI.Checkbox.EVENT_CHANGE = "Checkbox.EVENT_CHANGE";

$.shortcut("bi.checkbox", BI.Checkbox);/**
 * 文件
 *
 * Created by GUY on 2016/1/27.
 * @class BI.File
 * @extends BI.Single
 * @abstract
 */
(function () {

    /**
     * @description normalize input.files. create if not present, add item method if not present
     * @param       Object      generated wrap object
     * @return      Object      the wrap object itself
     */
    var F = (function (item) {
        return function (input) {
            var files = input.files || [input];
            if (!files.item) {
                files.item = item;
            }
            return files;
        };
    })(function (i) {
        return this[i];
    });

    var event = {

        /**
         * @description add an event via addEventListener or attachEvent
         * @param       DOMElement  the element to add event
         * @param       String      event name without "on" (e.g. "mouseover")
         * @param       Function    the callback to associate as event
         * @return      Object      noswfupload.event
         */
        add: document.addEventListener ?
            function (node, name, callback) {
                node.addEventListener(name, callback, false);
                return this;
            } :
            function (node, name, callback) {
                node.attachEvent("on" + name, callback);
                return this;
            },

        /**
         * @description remove an event via removeEventListener or detachEvent
         * @param       DOMElement  the element to remove event
         * @param       String      event name without "on" (e.g. "mouseover")
         * @param       Function    the callback associated as event
         * @return      Object      noswfupload.event
         */
        del: document.removeEventListener ?
            function (node, name, callback) {
                node.removeEventListener(name, callback, false);
                return this;
            } :
            function (node, name, callback) {
                node.detachEvent("on" + name, callback);
                return this;
            },

        /**
         * @description to block event propagation and prevent event default
         * @param       void        generated event or undefined
         * @return      Boolean     false
         */
        stop: function (e) {
            if (!e) {
                if (self.event) {
                    event.returnValue = !(event.cancelBubble = true);
                }
            } else {
                e.stopPropagation ? e.stopPropagation() : e.cancelBubble = true;
                e.preventDefault ? e.preventDefault() : e.returnValue = false;
            }
            ;
            return false;
        }
    };

    var sendFile = (function (toString) {
        var multipart = function (boundary, name, file) {
                return "--".concat(
                    boundary, CRLF,
                    'Content-Disposition: form-data; name="', name, '"; filename="', BI.cjkEncode(file.fileName), '"', CRLF,
                    "Content-Type: application/octet-stream", CRLF,
                    CRLF,
                    file.getAsBinary(), CRLF,
                    "--", boundary, "--", CRLF
                );
            },
            isFunction = function (Function) {
                return toString.call(Function) === "[object Function]";
            },
            split = "onabort.onerror.onloadstart.onprogress".split("."),
            length = split.length,
            CRLF = "\r\n",
            xhr = this.XMLHttpRequest ? new XMLHttpRequest : new ActiveXObject("Microsoft.XMLHTTP"),
            sendFile;

        // FireFox 3+, Safari 4 beta (Chrome 2 beta file is buggy and will not work)
        if (xhr.upload || xhr.sendAsBinary) {
            sendFile = function (handler, maxSize, width, height) {
                if (-1 < maxSize && maxSize < handler.file.fileSize) {
                    if (isFunction(handler.onerror)) {
                        handler.onerror();
                    }
                    return;
                }
                for (var
                         xhr = new XMLHttpRequest,
                         upload = xhr.upload || {
                                 addEventListener: function (event, callback) {
                                     this["on" + event] = callback
                                 }
                             },
                         i = 0;
                     i < length;
                     i++
                ) {
                    upload.addEventListener(
                        split[i].substring(2),
                        (function (event) {
                            return function (rpe) {
                                if (isFunction(handler[event])) {
                                    handler[event](rpe, xhr);
                                }
                            };
                        })(split[i]),
                        false
                    );
                }
                upload.addEventListener(
                    "load",
                    function (rpe) {
                        if (handler.onreadystatechange === false) {
                            if (isFunction(handler.onload)) {
                                handler.onload(rpe, xhr);
                            }
                        } else {
                            setTimeout(function () {
                                if (xhr.readyState === 4) {
                                    if (isFunction(handler.onload)) {
                                        handler.onload(rpe, xhr);
                                    }
                                } else {
                                    setTimeout(arguments.callee, 15);
                                }
                            }, 15);
                        }
                    },
                    false
                );
                xhr.open("post", handler.url + '&filename=' + BI.cjkEncode(handler.file.fileName), true);
                if (!xhr.upload) {
                    var rpe = {loaded: 0, total: handler.file.fileSize || handler.file.size, simulation: true};
                    rpe.interval = setInterval(function () {
                        rpe.loaded += 1024 / 4;
                        if (rpe.total <= rpe.loaded) {
                            rpe.loaded = rpe.total;
                        }
                        upload.onprogress(rpe);
                    }, 100);
                    xhr.onabort = function () {
                        upload.onabort({});
                    };
                    xhr.onerror = function () {
                        upload.onerror({});
                    };
                    xhr.onreadystatechange = function () {
                        switch (xhr.readyState) {
                            case    2:
                            case    3:
                                if (rpe.total <= rpe.loaded)
                                    rpe.loaded = rpe.total;
                                upload.onprogress(rpe);
                                break;
                            case    4:
                                clearInterval(rpe.interval);
                                rpe.interval = 0;
                                rpe.loaded = rpe.total;
                                upload.onprogress(rpe);
                                if (199 < xhr.status && xhr.status < 400) {
                                    upload["onload"]({});
                                    var attachO = BI.jsonDecode(xhr.responseText);
                                    attachO.filename = BI.cjkDecode(handler.file.fileName);
                                    if (handler.file.type.indexOf('image') != -1) {
                                        attachO.attach_type = "image";
                                    }
                                    handler.attach_array.push(attachO);
                                } else {
                                    upload["onerror"]({});
                                }
                                break;
                        }
                    };
                    upload.onloadstart(rpe);
                } else {
                    xhr.onreadystatechange = function () {
                        switch (xhr.readyState) {
                            case    4:
                                var attachO = BI.jsonDecode(xhr.responseText);
                                if (handler.file.type.indexOf('image') != -1) {
                                    attachO.attach_type = "image";
                                }
                                attachO.filename = handler.file.fileName;
                                if (handler.maxlength == 1) {
                                    handler.attach_array[0] = attachO;
                                    //                                   handler.attach_array.push(attachO);
                                } else {
                                    handler.attach_array.push(attachO);
                                }
                                break;
                        }
                    }
                }
                var boundary = "AjaxUploadBoundary" + (new Date).getTime();
                xhr.setRequestHeader("Content-Type", "multipart/form-data; boundary=" + boundary);
                if (handler.file.getAsBinary) {
                    xhr[xhr.sendAsBinary ? "sendAsBinary" : "send"](multipart(boundary, handler.name, handler.file));
                } else {
                    xhr.setRequestHeader("Content-Type", "multipart/form-data");
//                    xhr.setRequestHeader("X-Name", handler.name);
//                    xhr.setRequestHeader("X-File-Name", handler.file.fileName);
                    var form = new FormData();
                    form.append("FileData", handler.file);
                    xhr.send(form);
                }
                return handler;
            };
        }
        // Internet Explorer, Opera, others
        else {
            sendFile = function (handler, maxSize, width, height) {
                var url = handler.url.concat(-1 === handler.url.indexOf("?") ? "?" : "&", "AjaxUploadFrame=true"),
                    rpe = {
                        loaded: 1, total: 100, simulation: true, interval: setInterval(function () {
                            if (rpe.loaded < rpe.total)
                                ++rpe.loaded;
                            if (isFunction(handler.onprogress))
                                handler.onprogress(rpe, {});
                        }, 100)
                    },
                    onload = function () {
                        iframe.onreadystatechange = iframe.onload = iframe.onerror = null;
                        form.parentNode.removeChild(form);
                        form = null;
                        clearInterval(rpe.interval);
                        //rpe.loaded = rpe.total;
                        try {
                            var responseText = (iframe.contentWindow.document || iframe.contentWindow.contentDocument).body.innerHTML;
                            var attachO = BI.jsonDecode(responseText);
                            if (handler.file.type.indexOf('image') != -1) {
                                attachO.attach_type = "image";
                            }

                            //attachO.fileSize = responseText.length;
                            attachO.filename = BI.cjkDecode(handler.file.fileName);
                            if (handler.maxlength == 1) {
                                handler.attach_array[0] = attachO;
                            } else {
                                handler.attach_array.push(attachO);
                            }
                        } catch (e) {
                            if (isFunction(handler.onerror))
                                handler.onerror(rpe, event || window.event);
                        }
                        if (isFunction(handler.onload))
                            handler.onload(rpe, {responseText: responseText});
                    },
                    target = ["AjaxUpload", (new Date).getTime(), String(Math.random()).substring(2)].join("_");
                try { // IE < 8 does not accept enctype attribute ...
                    var form = document.createElement('<form enctype="multipart/form-data"></form>'),
                        iframe = handler.iframe || (handler.iframe = document.createElement('<iframe id="' + target + '" name="' + target + '" src="' + url + '"></iframe>'));
                } catch (e) {
                    var form = document.createElement('form'),
                        iframe = handler.iframe || (handler.iframe = document.createElement("iframe"));
                    form.setAttribute("enctype", "multipart/form-data");
                    iframe.setAttribute("name", iframe.id = target);
                    iframe.setAttribute("src", url);
                }
                iframe.style.position = "absolute";
                iframe.style.left = iframe.style.top = "-10000px";
                iframe.onload = onload;
                iframe.onerror = function (event) {
                    if (isFunction(handler.onerror)) {
                        handler.onerror(rpe, event || window.event);
                    }
                };
                iframe.onreadystatechange = function () {
                    if (/loaded|complete/i.test(iframe.readyState)) {
                        onload();

                        //wei : todo,将附件信息放到handler.attach
                    }
                    else if (isFunction(handler.onloadprogress)) {
                        if (rpe.loaded < rpe.total) {
                            ++rpe.loaded;
                        }
                        handler.onloadprogress(rpe, {
                            readyState: {
                                loading: 2,
                                interactive: 3,
                                loaded: 4,
                                complete: 4
                            }[iframe.readyState] || 1
                        });
                    }
                };
                form.setAttribute("action", handler.url);
                form.setAttribute("target", iframe.id);
                form.setAttribute("method", "post");
                form.appendChild(handler.file);
                form.style.display = "none";
                if (isFunction(handler.onloadstart)) {
                    handler.onloadstart(rpe, {});
                }
                with (document.body || document.documentElement) {
                    appendChild(iframe);
                    appendChild(form);
                    form.submit();
                }
                ;
                return handler;
            };
        }
        xhr = null;
        return sendFile;
    })(Object.prototype.toString);

    var sendFiles = function (handler, maxSize, width, height) {

        var length = handler.files.length,
            i = 0,
            onload = handler.onload,
            onloadstart = handler.onloadstart;
        handler.current = 0;
        handler.total = 0;
        handler.sent = 0;
        while (handler.current < length) {
            handler.total += (handler.files[handler.current].fileSize || handler.files[handler.current].size);
            handler.current++;
        }
        handler.current = 0;
        if (length && handler.files[0].fileSize !== -1) {
            handler.file = handler.files[handler.current];

            sendFile(handler, maxSize, width, height).onload = function (rpe, xhr) {
                handler.onloadstart = null;
                handler.sent += (handler.files[handler.current].fileSize || handler.files[handler.current].size);
                if (++handler.current < length) {
                    handler.file = handler.files[handler.current];
                    sendFile(handler, maxSize, width, height).onload = arguments.callee;
                } else if (onload) {
                    handler.onloadstart = onloadstart;
                    handler.onload = onload;
                    handler.onload(rpe, xhr);
                }
            };
        } else if (length) {
            handler.total = length * 100;
            handler.file = handler.files[handler.current];
            sendFile(handler, maxSize, width, height).onload = function (rpe, xhr) {
                var callee = arguments.callee;
                handler.onloadstart = null;
                handler.sent += 100;
                if (++handler.current < length) {
                    if (/\b(chrome|safari)\b/i.test(navigator.userAgent)) {
                        handler.iframe.parentNode.removeChild(handler.iframe);
                        handler.iframe = null;
                    }
                    setTimeout(function () {
                        handler.file = handler.files[handler.current];
                        sendFile(handler, maxSize, width, height).onload = callee;
                    }, 15);
                } else if (onload) {
                    setTimeout(function () {
                        handler.iframe.parentNode.removeChild(handler.iframe);
                        handler.iframe = null;
                        handler.onloadstart = onloadstart;
                        handler.onload = onload;
                        handler.onload(rpe, xhr);
                    }, 15);
                }
            };
        }
        return handler;
    };

    BI.File = BI.inherit(BI.Single, {
        _defaultConfig: function () {
            var conf = BI.File.superclass._defaultConfig.apply(this, arguments);
            return BI.extend(conf, {
                baseCls: (conf.baseCls || "") + " bi-file display-block",
                element: "<input type='file'>",
                name: "",
                url: "",
                multiple: true,
                accept: "", /**'*.jpg; *.zip'**/
                maxSize: 1024 * 1024
            })
        },

        _init: function () {
            var self = this, o = this.options;
            BI.File.superclass._init.apply(this, arguments);
            if (o.multiple === true) {
                this.element.attr("multiple", "multiple");
            }
            this.element.attr("name", o.name || this.getName());

            BI.nextTick(function () {
                // create the noswfupload.wrap Object
                // wrap.maxSize 文件大小限制
                // wrap.maxlength 文件个数限制
                var _wrap = self.wrap = self._wrap(self.element[0], o.maxSize);
                // fileType could contain whatever text but filter checks *.{extension}
                // if present

                // handlers

                _wrap.onloadstart = function (rpe, xhr) {
                    //BI.Msg.toast("loadstart");
                    self.fireEvent(BI.File.EVENT_UPLOADSTART);
                };

                _wrap.onprogress = function (rpe, xhr) {
                    //BI.Msg.toast("onprogress");
                    // percent for each bar

                    // fileSize is -1 only if browser does not support file info access
                    // this if splits recent browsers from others
                    if (this.file.fileSize !== -1) {
                        // simulation property indicates when the progress event is fake
                        if (rpe.simulation) {

                        } else {

                        }
                    } else {
                        // if fileSIze is -1 browser is using an iframe because it does
                        // not support
                        // files sent via Ajax (XMLHttpRequest)
                        // We can still show some information
                    }
                    self.fireEvent(BI.File.EVENT_PROGRESS, {
                        file: this.file,
                        total: rpe.total,
                        loaded: rpe.loaded,
                        simulation: rpe.simulation
                    });
                };

                // generated if there is something wrong during upload
                _wrap.onerror = function () {
                    // just inform the user something was wrong
                    self.fireEvent(BI.File.EVENT_ERROR);
                };

                // generated when every file has been sent (one or more, it does not
                // matter)
                _wrap.onload = function (rpe, xhr) {
                    var self_ = this;
                    // just show everything is fine ...
                    // ... and after a second reset the component
                    setTimeout(function () {
                        self_.clean(); // remove files from list
                        self_.hide(); // hide progress bars and enable input file

                        //BI.Msg.toast("onload");
                        self.fireEvent(BI.File.EVENT_UPLOADED);
                        // enable again the submit button/element
                    }, 1000);
                };
                _wrap.url = o.url ? o.url : BI.servletURL
                + '?op=fr_attach&cmd=ah_upload';
                _wrap.fileType = o.accept;   //文件类型限制
                _wrap.attach_array = [];
                _wrap.attach_names = [];
                _wrap.attachNum = 0;
            });
        },

        _events: function (wrap) {
            var self = this;
            event.add(wrap.dom.input, "change", function () {
                event.del(wrap.dom.input, "change", arguments.callee);
                for (var input = wrap.dom.input.cloneNode(true), i = 0, files = F(wrap.dom.input); i < files.length; i++) {
                    var item = files.item(i);
                    var tempFile = item.value || item.name;
                    var value = item.fileName || (item.fileName = tempFile.split("\\").pop()),
                        ext = -1 !== value.indexOf(".") ? value.split(".").pop().toLowerCase() : "unknown",
                        size = item.fileSize || item.size;
                    if (wrap.fileType && -1 === wrap.fileType.indexOf("*." + ext)) {
                        //文件类型不支持
                        BI.Msg.toast(BI.i18nText("BI-Upload_File_Type_Error"));
                        self.fireEvent(BI.File.EVENT_ERROR, {
                            errorType: 0,
                            file: item
                        });
                    } else if (wrap.maxSize !== -1 && size && wrap.maxSize < size) {
                        //文件大小不支持
                        BI.Msg.toast(BI.i18nText("BI-Upload_File_Size_Error"));
                        self.fireEvent(BI.File.EVENT_ERROR, {
                            errorType: 1,
                            file: item
                        });
                    } else {
                        wrap.files.unshift(item);
                        //BI.Msg.toast(value);
                        self.fireEvent(BI.File.EVENT_CHANGE, {
                            file: item
                        });
                    }
                }
                input.value = "";
                wrap.dom.input.parentNode.replaceChild(input, wrap.dom.input);
                wrap.dom.input = input;
                event.add(wrap.dom.input, "change", arguments.callee);
            });
            return wrap;
        },

        _wrap: function () {
            var self = this, o = this.options;
            // be sure input accept multiple files
            var input = this.element[0];
            if (o.multiple === true) {
                this.element.attr("multiple", "multiple");
            }
            input.value = "";

            // wrap Object
            return this._events({

                // DOM namespace
                dom: {
                    input: input,        // input file
                    disabled: false      // internal use, checks input file state
                },
                name: input.name,        // name to send for each file ($_FILES[{name}] in the server)
                                         // maxSize is the maximum amount of bytes for each file
                maxSize: o.maxSize ? o.maxSize >> 0 : -1,
                files: [],               // file list

                // remove every file from the noswfupload component
                clean: function () {
                    this.files = [];
                },

                // upload one file a time (which make progress possible rather than all files in one shot)
                // the handler is an object injected into the wrap one, could be the wrap itself or
                // something like {onload:function(){alert("OK")},onerror:function(){alert("Error")}, etc ...}
                upload: function (handler) {
                    if (handler) {
                        for (var key in handler) {
                            this[key] = handler[key];
                        }
                    }
                    sendFiles(this, this.maxSize);
                    return this;
                },

                // hide progress bar (total + current) and enable files selection
                hide: function () {
                    if (this.dom.disabled) {
                        this.dom.disabled = false;
                        this.dom.input.removeAttribute("disabled");
                    }
                },

                // show progress bar and disable file selection (used during upload)
                // total and current are pixels used to style bars
                // totalProp and currentProp are properties to change, "height" by default
                show: function (total, current, totalProp, currentProp) {
                    if (!this.dom.disabled) {
                        this.dom.disabled = true;
                        this.dom.input.setAttribute("disabled", "disabled");
                    }
                }
            });
        },

        select: function () {
            $(this.wrap.dom.input).click();
        },

        upload: function (handler) {
            this.wrap.upload(handler);
        },

        getValue: function () {
            return this.wrap.attach_array;
        },

        reset: function () {
            this.wrap.attach_array = [];
            this.wrap.attach_names = [];
            this.wrap.attachNum = 0;
        },

        setEnable: function (enable) {
            BI.MultiFile.superclass.setEnable.apply(this, arguments);
            if (enable === true) {
                this.element.attr("disabled", "disabled");
            } else {
                this.element.removeAttr("disabled");
            }
        }
    });
    BI.File.EVENT_CHANGE = "BI.File.EVENT_CHANGE";
    BI.File.EVENT_UPLOADSTART = "EVENT_UPLOADSTART";
    BI.File.EVENT_ERROR = "EVENT_ERROR";
    BI.File.EVENT_PROGRESS = "EVENT_PROGRESS";
    BI.File.EVENT_UPLOADED = "EVENT_UPLOADED";
    $.shortcut("bi.file", BI.File);
})();/**
 * guy
 * @class BI.Input 一个button和一行数 组成的一行listitem
 * @extends BI.Single
 * @type {*|void|Object}
 */
BI.Input = BI.inherit(BI.Single, {
    _defaultConfig: function () {
        var conf = BI.Input.superclass._defaultConfig.apply(this, arguments);
        return BI.extend(conf, {
            baseCls: (conf.baseCls || "") + " bi-input display-block",
            element: "<input/>",
            validationChecker: BI.emptyFn,
            quitChecker: BI.emptyFn,//按确定键能否退出编辑
            mouseOut: false,
            allowBlank: false
        })
    },

    _init: function () {
        BI.Input.superclass._init.apply(this, arguments);
        var self = this;
        var ctrlKey = false;
        var inputEventValid = false;
        var _keydown = BI.debounce(function (keyCode) {
            self.onKeyDown(keyCode, ctrlKey);
            self._keydown_ = false;
        }, 300);
        var _clk = BI.debounce(BI.bind(this._click, this), BI.EVENT_RESPONSE_TIME, true);
        this._blurDebounce = BI.debounce(BI.bind(this._blur, this), BI.EVENT_RESPONSE_TIME, true);
        this.element
            .keydown(function (e) {
                inputEventValid = false;
                ctrlKey = e.ctrlKey;
                self.fireEvent(BI.Input.EVENT_QUICK_DOWN);
            })
            .keyup(function (e) {
                if (!(inputEventValid && e.keyCode === BI.KeyCode.ENTER)) {
                    self._keydown_ = true;
                    _keydown(e.keyCode);
                }
            })
            .on("input propertychange", function (e) {
                inputEventValid = true;
                self._keydown_ = true;
                _keydown(e.keyCode);
            })
            .click(function (e) {
                e.stopPropagation();
                _clk();
            })
            .mousedown(function (e) {
                self.element.val(self.element.val());
            })
            .focusout(function (e) {
                self._blurDebounce();
            });
    },

    _focus: function () {
        this.element.addClass("bi-input-focus");
        this._checkValidationOnValueChange();
        this._isEditing = true;
        if (this.getValue() == "") {
            this.fireEvent(BI.Controller.EVENT_CHANGE, BI.Events.EMPTY, this.getValue(), this);
            this.fireEvent(BI.Input.EVENT_EMPTY);
        }
        this.fireEvent(BI.Input.EVENT_FOCUS);
    },

    _blur: function () {
        var self = this;
        if (self._keydown_ === true) {
            BI.delay(blur, 300);
        } else {
            blur();
        }
        function blur() {
            if (!self.isValid() && self.options.quitChecker.apply(self, [BI.trim(self.getValue())]) !== false) {
                self.element.val(self._lastValidValue ? self._lastValidValue : "");
                self._checkValidationOnValueChange();
                self._defaultState();
            }
            self.element.removeClass("bi-input-focus");
            self._isEditing = false;
            self._start = false;
            if (self.isValid()) {
                self.fireEvent(BI.Controller.EVENT_CHANGE, BI.Events.CONFIRM, self.getValue(), self);
                self.fireEvent(BI.Input.EVENT_CONFIRM);
            }
            self.fireEvent(BI.Input.EVENT_BLUR);
        }
    },

    _click: function () {
        if (this._isEditing !== true) {
            this._focus();
            this.selectAll();
            this.fireEvent(BI.Input.EVENT_CLICK);
        }
    },

    onClick: function () {
        this._click();
    },

    onKeyDown: function (keyCode, ctrlKey) {
        if (!this.isValid() || BI.trim(this._lastValidValue) !== BI.trim(this.getValue())) {
            this._checkValidationOnValueChange();
        }
        if (this.isValid() && BI.trim(this.getValue()) !== "") {
            if (BI.trim(this.getValue()) !== this._lastValue && (!this._start || this._lastValue == null || this._lastValue === "")
                || (this._pause === true && !/(\s|\u00A0)$/.test(this.getValue()))) {
                this._start = true;
                this._pause = false;
                this.fireEvent(BI.Controller.EVENT_CHANGE, BI.Events.STARTEDIT, this.getValue(), this);
                this.fireEvent(BI.Input.EVENT_START);
            }
        }
        if (ctrlKey === true && keyCode === 86) {//ctrlKey+V
            this._valueChange();
        } else {
            if (keyCode == BI.KeyCode.ENTER) {
                if (this.isValid() || this.options.quitChecker.apply(this, [BI.trim(this.getValue())]) !== false) {
                    this.blur();
                    this.fireEvent(BI.Input.EVENT_ENTER);
                } else {
                    this.fireEvent(BI.Input.EVENT_RESTRICT);
                }
            }
            if (keyCode == BI.KeyCode.SPACE) {
                this.fireEvent(BI.Input.EVENT_SPACE);
            }
            if (keyCode == BI.KeyCode.BACKSPACE && this._lastValue == "") {
                this.fireEvent(BI.Input.EVENT_REMOVE);
            }
            if (keyCode == BI.KeyCode.BACKSPACE || keyCode == BI.KeyCode.DELETE) {
                this.fireEvent(BI.Input.EVENT_BACKSPACE);
            }
        }
        this.fireEvent(BI.Input.EVENT_KEY_DOWN);

        if (BI.isEndWithBlank(this.getValue())) {
            this._pause = true;
            this.fireEvent(BI.Controller.EVENT_CHANGE, BI.Events.PAUSE, "", this);
            this.fireEvent(BI.Input.EVENT_PAUSE);
            this._defaultState();
        } else if ((keyCode === BI.KeyCode.BACKSPACE || keyCode === BI.KeyCode.DELETE) &&
            BI.trim(this.getValue()) === "" && (this._lastValue !== null && BI.trim(this._lastValue) !== "")) {
            this.fireEvent(BI.Controller.EVENT_CHANGE, BI.Events.STOPEDIT, this.getValue(), this);
            this.fireEvent(BI.Input.EVENT_STOP);
            this._valueChange();
        } else {
            this._valueChange();
        }
    },

    //初始状态
    _defaultState: function () {
        if (this.getValue() == "") {
            this.fireEvent(BI.Controller.EVENT_CHANGE, BI.Events.EMPTY, this.getValue(), this);
            this.fireEvent(BI.Input.EVENT_EMPTY);
        }
        this._lastValue = this.getValue();
        this._lastSubmitValue = null;
    },

    _valueChange: function () {
        if (this.isValid() && BI.trim(this.getValue()) !== this._lastSubmitValue) {
            this.fireEvent(BI.Controller.EVENT_CHANGE, BI.Events.CHANGE, this.getValue(), this);
            this.fireEvent(BI.Input.EVENT_CHANGE);
            this._lastSubmitValue = BI.trim(this.getValue());
        }
        if (this.getValue() == "") {
            this.fireEvent(BI.Controller.EVENT_CHANGE, BI.Events.EMPTY, this.getValue(), this);
            this.fireEvent(BI.Input.EVENT_EMPTY);
        }
        this._lastValue = this.getValue();
    },

    _checkValidationOnValueChange: function () {
        var o = this.options;
        var v = this.getValue();
        this.setValid(
            (o.allowBlank === true && BI.trim(v) == "") ||
            (BI.isNotEmptyString(BI.trim(v))
            && (v === this._lastValidValue ||
            o.validationChecker.apply(this, [BI.trim(v)]) !== false))
        );
    },

    focus: function () {
        if (!this.element.is(":visible")) {
            throw new Error("input输入框在不可见下不能focus");
        }
        if (!this._isEditing === true) {
            this.element.focus();
            this._focus();
            this.selectAll();
        }
    },

    blur: function () {
        if (!this.element.is(":visible")) {
            throw new Error("input输入框在不可见下不能blur");
        }
        if (this._isEditing === true) {
            this.element.blur();
            this._blurDebounce();
        }
    },

    selectAll: function () {
        if (!this.element.is(":visible")) {
            throw new Error("input输入框在不可见下不能select");
        }
        this.element.select();
        this._isEditing = true;
    },

    setValue: function (textValue) {
        this.element.val(textValue);
        BI.nextTick(BI.bind(function () {
            this._checkValidationOnValueChange();
            this._defaultState();
            if (this.isValid()) {
                this._lastSubmitValue = this.getValue();
            }
        }, this));
    },

    getValue: function () {
        return this.element.val() || "";
    },

    isEditing: function () {
        return this._isEditing;
    },

    getLastValidValue: function () {
        return this._lastValidValue;
    },

    setValid: function () {
        BI.Input.superclass.setValid.apply(this, arguments);
        if (this.isValid()) {
            this._lastValidValue = this.getValue();
            this.element.removeClass("bi-input-error");
            this.fireEvent(BI.Input.EVENT_VALID, BI.trim(this.getValue()), this);
        } else {
            if (this._lastValidValue === this.getValue()) {
                this._lastValidValue = null;
            }
            this.element.addClass("bi-input-error");
            this.fireEvent(BI.Input.EVENT_ERROR, BI.trim(this.getValue()), this);
        }
    },

    setEnable: function (b) {
        BI.Input.superclass.setEnable.apply(this, [b]);
        this.element[0].disabled = !b;
    }
});
BI.Input.EVENT_CHANGE = "EVENT_CHANGE";

BI.Input.EVENT_FOCUS = "EVENT_FOCUS";
BI.Input.EVENT_CLICK = "EVENT_CLICK";
BI.Input.EVENT_BLUR = "EVENT_BLUR";
BI.Input.EVENT_KEY_DOWN = "EVENT_KEY_DOWN";
BI.Input.EVENT_QUICK_DOWN = "EVENT_QUICK_DOWN";
BI.Input.EVENT_SPACE = "EVENT_SPACE";
BI.Input.EVENT_BACKSPACE = "EVENT_BACKSPACE";

BI.Input.EVENT_START = "EVENT_START";
BI.Input.EVENT_PAUSE = "EVENT_PAUSE";
BI.Input.EVENT_STOP = "EVENT_STOP";
BI.Input.EVENT_CONFIRM = "EVENT_CONFIRM";
BI.Input.EVENT_REMOVE = "EVENT_REMOVE";
BI.Input.EVENT_EMPTY = "EVENT_EMPTY";
BI.Input.EVENT_VALID = "EVENT_VALID";
BI.Input.EVENT_ERROR = "EVENT_ERROR";
BI.Input.EVENT_ENTER = "EVENT_ENTER";
BI.Input.EVENT_RESTRICT = "EVENT_RESTRICT";
$.shortcut("bi.input", BI.Input);/**
 * guy
 * @extends BI.Single
 * @type {*|void|Object}
 */
BI.Radio = BI.inherit(BI.IconButton, {
    _defaultConfig: function() {
        var conf = BI.Radio.superclass._defaultConfig.apply(this,arguments);
        return BI.extend(conf, {
            baseCls: (conf.baseCls || "") + " bi-radio radio-icon",
            selected: false,
            handler: BI.emptyFn,
            width: 16,
            height: 16,
            iconWidth: 16,
            iconHeight: 16
        })
    },

    _init : function() {
        BI.Radio.superclass._init.apply(this, arguments);
    },

    doClick: function(){
        BI.Radio.superclass.doClick.apply(this, arguments);
        if(this.isValid()){
            this.fireEvent(BI.Radio.EVENT_CHANGE);
        }
    }
});
BI.Radio.EVENT_CHANGE = "Radio.EVENT_CHANGE";

$.shortcut("bi.radio", BI.Radio);/**
 * Created by GUY on 2015/6/26.
 */

BI.Label = BI.inherit(BI.Single, {
    _defaultConfig: function () {
        var conf = BI.Label.superclass._defaultConfig.apply(this, arguments);
        return BI.extend(conf, {
            baseCls: (conf.baseCls || "") + " bi-label",
            textAlign: "center",
            whiteSpace: "nowrap", //normal  or  nowrap
            forceCenter: false, //是否无论如何都要居中, 不考虑超出边界的情况, 在未知宽度和高度时有效
            textWidth: null,
            textHeight: null,
            hgap: 0,
            vgap: 0,
            lgap: 0,
            rgap: 0,
            tgap: 0,
            bgap: 0,
            text: "",
            py: "",
            keyword: ""
        })
    },

    _createJson: function () {
        var o = this.options;
        return {
            type: "bi.text",
            textAlign: o.textAlign,
            whiteSpace: o.whiteSpace,
            lineHeight: o.textHeight,
            text: o.text,
            value: o.value,
            py: o.py,
            keyword: o.keyword
        };
    },

    _init: function () {
        BI.Label.superclass._init.apply(this, arguments);

        if (this.options.textAlign === "center") {
            this._createCenterEl();
        } else {
            this._createNotCenterEl();
        }
    },

    _createCenterEl: function () {
        var o = this.options;
        var json = this._createJson();
        if (BI.isNumber(o.width) && o.width > 0) {
            if (BI.isNumber(o.textWidth) && o.textWidth > 0) {
                if (BI.isNumber(o.height) && o.height > 0) {
                    var gap = (o.width - o.textWidth) / 2;
                    BI.createWidget({
                        type: "bi.adaptive",
                        height: o.height,
                        scrollable: o.whiteSpace === "normal",
                        element: this,
                        items: [
                            {
                                el: (this.text = BI.createWidget(json)),
                                left: gap + o.hgap + o.lgap,
                                right: gap + o.hgap + o.rgap,
                                top: o.vgap + o.tgap,
                                bottom: o.vgap + o.bgap
                            }
                        ]
                    });
                    this.element.css({"line-height": o.height + "px"});
                    return;
                }
                json.width = o.textWidth;
                BI.createWidget({
                    type: "bi.center_adapt",
                    scrollable: o.whiteSpace === "normal",
                    element: this,
                    items: [
                        {
                            el: (this.text = BI.createWidget(json))
                        }
                    ]
                });
                return;
            }
            if (o.whiteSpace == "normal") {
                this.text = BI.createWidget(json);
                BI.createWidget({
                    type: "bi.center_adapt",
                    scrollable: o.whiteSpace === "normal",
                    hgap: o.hgap,
                    vgap: o.vgap,
                    lgap: o.lgap,
                    rgap: o.rgap,
                    tgap: o.tgap,
                    bgap: o.bgap,
                    element: this,
                    items: [this.text]
                });
                return;
            }
            if (BI.isNumber(o.height) && o.height > 0) {
                this.element.css({
                    "line-height": o.height + "px"
                });
                BI.createWidget({
                    type: "bi.absolute",
                    scrollable: o.whiteSpace === "normal",
                    element: this,
                    items: [{
                        el: (this.text = BI.createWidget(json)),
                        left: o.hgap + o.lgap,
                        right: o.hgap + o.rgap,
                        top: o.vgap + o.tgap,
                        bottom: o.vgap + o.bgap
                    }]
                });
                return;
            }
            json.width = o.width - 2 * o.hgap;
            BI.createWidget({
                type: "bi.center_adapt",
                scrollable: o.whiteSpace === "normal",
                element: this,
                items: [{
                    el: (this.text = BI.createWidget(json))
                }]
            });
            return;
        }
        if (BI.isNumber(o.textWidth) && o.textWidth > 0) {
            json.width = o.textWidth;
            BI.createWidget({
                type: "bi.center_adapt",
                scrollable: o.whiteSpace === "normal",
                element: this,
                items: [
                    {
                        el: (this.text = BI.createWidget(json))
                    }
                ]
            });
            return;
        }
        if (o.whiteSpace == "normal") {
            this.text = BI.createWidget(json);
            this.text = BI.createWidget({
                type: "bi.center_adapt",
                hgap: o.hgap,
                vgap: o.vgap,
                lgap: o.lgap,
                rgap: o.rgap,
                tgap: o.tgap,
                bgap: o.bgap,
                scrollable: o.whiteSpace === "normal",
                element: this,
                items: [this.text]
            });
            return;
        }
        if (BI.isNumber(o.height) && o.height > 0) {
            if (BI.isNumber(o.textHeight) && o.textHeight > 0) {
                this.element.css({
                    "line-height": o.height + "px"
                });
                BI.createWidget({
                    type: "bi.adaptive",
                    height: o.height,
                    scrollable: o.whiteSpace === "normal",
                    element: this,
                    items: [{
                        el: (this.text = BI.createWidget(json)),
                        left: o.hgap + o.lgap,
                        right: o.hgap + o.rgap,
                        top: o.vgap + o.tgap,
                        bottom: o.vgap + o.bgap
                    }]
                });
                return;
            }
            BI.extend(json, {
                hgap: o.hgap,
                vgap: o.vgap,
                lgap: o.lgap,
                rgap: o.rgap,
                tgap: o.tgap,
                bgap: o.bgap
            });
            this.element.css({
                "line-height": o.height + "px"
            });
            this.text = BI.createWidget(BI.extend(json, {
                element: this
            }));
            BI.createWidget({
                type: "bi.layout",
                element: this.text,
                scrollable: o.whiteSpace === "normal"
            });
            return;
        }
        BI.extend(json, {
            hgap: o.hgap,
            vgap: o.vgap,
            lgap: o.lgap,
            rgap: o.rgap,
            tgap: o.tgap,
            bgap: o.bgap
        });
        if (o.forceCenter) {
            this.text = BI.createWidget(json);
            BI.createWidget({
                type: "bi.center_adapt",
                element: this,
                items: [this.text]
            });
            return;
        }
        this.text = BI.createWidget(BI.extend(json, {
            element: this
        }));
        BI.createWidget({
            type: "bi.layout",
            element: this.text,
            scrollable: o.whiteSpace === "normal"
        })
    },

    _createNotCenterEl: function () {
        var o = this.options;
        var json = this._createJson();
        if (BI.isNumber(o.width) && o.width > 0) {
            if (BI.isNumber(o.textWidth) && o.textWidth > 0) {
                if (BI.isNumber(o.height) && o.height > 0) {
                    BI.createWidget({
                        type: "bi.adaptive",
                        height: o.height,
                        scrollable: o.whiteSpace === "normal",
                        element: this,
                        items: [
                            {
                                el: (this.text = BI.createWidget(json)),
                                left: o.hgap + o.lgap,
                                right: o.hgap + o.rgap,
                                top: o.vgap + o.tgap,
                                bottom: o.vgap + o.bgap
                            }
                        ]
                    });
                    this.element.css({"line-height": o.height + "px"});
                    return;
                }
                json.width = o.textWidth;
                BI.createWidget({
                    type: "bi.vertical_adapt",
                    scrollable: o.whiteSpace === "normal",
                    hgap: o.hgap,
                    vgap: o.vgap,
                    lgap: o.lgap,
                    rgap: o.rgap,
                    tgap: o.tgap,
                    bgap: o.bgap,
                    element: this,
                    items: [
                        {
                            el: (this.text = BI.createWidget(json))
                        }
                    ]
                });
                return;
            }
            if (o.whiteSpace == "normal") {
                this.text = BI.createWidget(json);
                BI.createWidget({
                    type: "bi.vertical_adapt",
                    scrollable: o.whiteSpace === "normal",
                    hgap: o.hgap,
                    vgap: o.vgap,
                    lgap: o.lgap,
                    rgap: o.rgap,
                    tgap: o.tgap,
                    bgap: o.bgap,
                    element: this,
                    items: [this.text]
                });
                return;
            }
            if (BI.isNumber(o.height) && o.height > 0) {
                this.element.css({
                    "line-height": o.height + "px"
                });
                BI.createWidget({
                    type: "bi.absolute",
                    scrollable: o.whiteSpace === "normal",
                    element: this,
                    items: [{
                        el: (this.text = BI.createWidget(json)),
                        left: o.hgap + o.lgap,
                        right: o.hgap + o.rgap,
                        top: o.vgap + o.tgap,
                        bottom: o.vgap + o.bgap
                    }]
                });
                return;
            }
            json.width = o.width - 2 * o.hgap - o.lgap - o.rgap;
            BI.createWidget({
                type: "bi.vertical_adapt",
                scrollable: o.whiteSpace === "normal",
                hgap: o.hgap,
                vgap: o.vgap,
                lgap: o.lgap,
                rgap: o.rgap,
                tgap: o.tgap,
                bgap: o.bgap,
                element: this,
                items: [{
                    el: (this.text = BI.createWidget(json))
                }]
            });
            return;
        }
        if (BI.isNumber(o.textWidth) && o.textWidth > 0) {
            json.width = o.textWidth;
            BI.createWidget({
                type: "bi.vertical_adapt",
                scrollable: o.whiteSpace === "normal",
                hgap: o.hgap,
                vgap: o.vgap,
                lgap: o.lgap,
                rgap: o.rgap,
                tgap: o.tgap,
                bgap: o.bgap,
                element: this,
                items: [
                    {
                        el: (this.text = BI.createWidget(json))
                    }
                ]
            });
            return;
        }
        if (o.whiteSpace == "normal") {
            this.text = BI.createWidget(json)
            this.text = BI.createWidget({
                type: "bi.vertical_adapt",
                scrollable: o.whiteSpace === "normal",
                hgap: o.hgap,
                vgap: o.vgap,
                lgap: o.lgap,
                rgap: o.rgap,
                tgap: o.tgap,
                bgap: o.bgap,
                element: this,
                items: [this.text]
            });
            return;
        }
        if (BI.isNumber(o.height) && o.height > 0) {
            if (BI.isNumber(o.textHeight) && o.textHeight > 0) {
                this.element.css({
                    "line-height": o.height + "px"
                });
                BI.createWidget({
                    type: "bi.adaptive",
                    height: o.height,
                    scrollable: o.whiteSpace === "normal",
                    element: this,
                    items: [{
                        el: (this.text = BI.createWidget(json)),
                        left: o.hgap + o.lgap,
                        right: o.hgap + o.rgap,
                        top: o.vgap + o.tgap,
                        bottom: o.vgap + o.bgap
                    }]
                });
                return;
            }
            BI.extend(json, {
                hgap: o.hgap,
                vgap: o.vgap,
                lgap: o.lgap,
                rgap: o.rgap,
                tgap: o.tgap,
                bgap: o.bgap
            });
            this.element.css({
                "line-height": o.height + "px"
            });
            this.text = BI.createWidget(BI.extend(json, {
                element: this
            }));
            BI.createWidget({
                type: "bi.layout",
                element: this.text,
                scrollable: o.whiteSpace === "normal"
            });
            return;
        }
        BI.extend(json, {
            hgap: o.hgap,
            vgap: o.vgap,
            lgap: o.lgap,
            rgap: o.rgap,
            tgap: o.tgap,
            bgap: o.bgap
        });
        if (o.forceCenter) {
            this.text = BI.createWidget(json);
            BI.createWidget({
                type: "bi.vertical_adapt",
                element: this,
                items: [this.text]
            });
            return;
        }
        this.text = BI.createWidget(BI.extend(json, {
            element: this
        }));
        BI.createWidget({
            type: "bi.layout",
            element: this.text,
            scrollable: o.whiteSpace === "normal"
        })
    },

    doRedMark: function () {
        this.text.doRedMark.apply(this.text, arguments);
    },

    unRedMark: function () {
        this.text.unRedMark.apply(this.text, arguments);
    },

    doHighLight: function () {
        this.text.doHighLight.apply(this.text, arguments);
    },

    unHighLight: function () {
        this.text.unHighLight.apply(this.text, arguments);
    },

    setText: function (v) {
        this.options.text = v;
        this.text.setText(v);
    },

    getText: function () {
        return this.options.text;
    },

    setStyle: function (css) {
        this.text.setStyle(css)
    },

    setValue: function (v) {
        BI.Label.superclass.setValue.apply(this, arguments);
        if (!this.isReadOnly()) {
            this.text.setValue(v);
        }
    },

    populate: function () {
        BI.Label.superclass.populate.apply(this, arguments);
    }
});

$.shortcut("bi.label", BI.Label);/**
 * guy a元素
 * @class BI.Link
 * @extends BI.Text
 */
BI.Link = BI.inherit(BI.Label, {
    _defaultConfig: function() {
        var conf = BI.Link.superclass._defaultConfig.apply(this, arguments);
        return BI.extend(conf, {
            baseCls: (conf.baseCls || "") + " bi-link",
            href: "",
            target: "_blank"
        })
    },

    _createJson: function(){
        var o = this.options;
        return {
            type:"bi.a",
            textAlign: o.textAlign,
            whiteSpace: o.whiteSpace,
            lineHeight: o.textHeight,
            text: o.text,
            keyword: o.keyword,
            value: o.value,
            py: o.py,
            href: o.href,
            target: o.target
        };
    },

    _init : function() {
        BI.Link.superclass._init.apply(this, arguments);
    }
});

$.shortcut("bi.link", BI.Link);/**
 * guy
 * tip提示
 * zIndex在10亿级别
 * @class BI.Tip
 * @extends BI.Single
 * @abstract
 */
BI.Tip = BI.inherit(BI.Single, {
    _defaultConfig: function() {
        var conf = BI.Link.superclass._defaultConfig.apply(this, arguments);
        return BI.extend(conf, {
            baseCls: (conf.baseCls || "") + " bi-tip",
            zIndex: BI.zIndex_tip
        })
    },

    _init : function() {
        BI.Tip.superclass._init.apply(this, arguments);
        this.element.css({"zIndex": this.options.zIndex});
    }
});/**
 * 下拉
 * @class BI.Trigger
 * @extends BI.Single
 * @abstract
 */
BI.Trigger = BI.inherit(BI.Single, {
    _defaultConfig: function() {
        var conf = BI.Trigger.superclass._defaultConfig.apply(this, arguments);
        return BI.extend(conf, {
            baseCls: (conf.baseCls || "") + " bi-trigger cursor-pointer",
            height: 30
        })
    },

    _init : function() {
        BI.Trigger.superclass._init.apply(this, arguments);
    },

    setKey: function(){

    },

    getKey: function(){

    }
});/**
 * svg绘图
 *
 * Created by GUY on 2015/12/3.
 * @class BI.Svg
 * @extends BI.Widget
 */
BI.Svg = BI.inherit(BI.Widget, {

    _defaultConfig: function () {
        return BI.extend(BI.Svg.superclass._defaultConfig.apply(this, arguments), {
            baseCls: "bi-svg"
        })
    },

    _init: function () {
        BI.Svg.superclass._init.apply(this, arguments);
        this.paper = Raphael(this.element[0]);

        $(this.paper.canvas).width("100%").height("100%").css({"left": "0", "top": "0"}).appendTo(this.element);

        this.top = this.paper.top;
        this.bottom = this.paper.bottom;
        this.customAttributes = this.paper.customAttributes;
        this.ca = this.paper.ca;
        this.raphael = this.paper.raphael;
    },

    add: function () {
        return this.paper.add.apply(this.paper, arguments);
    },

    path: function () {
        return this.paper.path.apply(this.paper, arguments);
    },

    image: function () {
        return this.paper.image.apply(this.paper, arguments);
    },

    rect: function () {
        return this.paper.rect.apply(this.paper, arguments);
    },

    circle: function () {
        return this.paper.circle.apply(this.paper, arguments);
    },

    ellipse: function () {
        return this.paper.ellipse.apply(this.paper, arguments);
    },

    text: function () {
        return this.paper.text.apply(this.paper, arguments);
    },

    print: function () {
        return this.paper.print.apply(this.paper, arguments);
    },


    setStart: function () {
        return this.paper.setStart.apply(this.paper, arguments);
    },

    setFinish: function () {
        return this.paper.setFinish.apply(this.paper, arguments);
    },

    setSize: function () {
        return this.paper.setSize.apply(this.paper, arguments);
    },

    setViewBox: function () {
        return this.paper.setViewBox.apply(this.paper, arguments);
    },


    getById: function () {
        return this.paper.getById.apply(this.paper, arguments);
    },

    getElementByPoint: function () {
        return this.paper.getElementByPoint.apply(this.paper, arguments);
    },

    getElementsByPoint: function () {
        return this.paper.getElementsByPoint.apply(this.paper, arguments);
    },

    getFont: function () {
        return this.paper.getFont.apply(this.paper, arguments);
    },


    set: function () {
        return this.paper.set.apply(this.paper, arguments);
    },
    remove: function () {
        return this.paper.remove.apply(this.paper, arguments);
    },
    clear: function () {
        return this.paper.clear.apply(this.paper, arguments);
    }
});
$.shortcut("bi.svg", BI.Svg);/**
 *
 * 表格
 *
 * Created by GUY on 2015/9/22.
 * @class BI.TableCell
 * @extends BI.Single
 */
BI.TableCell = BI.inherit(BI.Widget, {
    _defaultConfig: function () {
        return BI.extend(BI.TableCell.superclass._defaultConfig.apply(this, arguments), {
            baseCls: "bi-table-cell",
            textAlign: "left",
            text: ""
        })
    },

    _init: function () {
        BI.TableCell.superclass._init.apply(this, arguments);
        BI.createWidget({
            type: "bi.label",
            element: this,
            whiteSpace: "nowrap",
            textAlign: this.options.textAlign,
            height: this.options.height,
            text: this.options.text,
            value: this.options.value,
            lgap: 5
        })
    }
});

$.shortcut("bi.table_cell", BI.TableCell);/**
 *
 * 表格单元格
 *
 * Created by GUY on 2016/1/12.
 * @class BI.CollectionTableCell
 * @extends BI.Widget
 */
BI.CollectionTableCell = BI.inherit(BI.Widget, {
    _defaultConfig: function () {
        return BI.extend(BI.CollectionTableCell.superclass._defaultConfig.apply(this, arguments), {
            baseCls: "bi-collection-table-cell",
            width: 0,
            height: 0,
            _left: 0,
            _top: 0,
            cell: {}
        })
    },

    _init: function () {
        BI.CollectionTableCell.superclass._init.apply(this, arguments);
        var o = this.options;
        this.cell = BI.createWidget(BI.extend({
            type: "bi.label"
        }, o.cell, {
            cls: (o.cell.cls || "") + "collection-table-cell-wrapper",
            width: o.width - (o._left === 0 ? 1 : 0) - 1,
            height: o.height - (o._top === 0 ? 1 : 0) - 1
        }));
        BI.createWidget({
            type: "bi.absolute",
            element: this,
            items: [{
                el: this.cell,
                left: 0,
                right: 0,
                top: 0,
                bottom: 0
            }]
        });
    },

    setWidth: function (width) {
        BI.CollectionTableCell.superclass.setWidth.apply(this, arguments);
        var o = this.options;
        this.cell.setWidth(o.width - (o._left === 0 ? 1 : 0) - 1);
    },

    setHeight: function (height) {
        BI.CollectionTableCell.superclass.setHeight.apply(this, arguments);
        var o = this.options;
        this.cell.setHeight(o.height - (o._top === 0 ? 1 : 0) - 1);
    }
});

$.shortcut("bi.collection_table_cell", BI.CollectionTableCell);/**
 * CollectionTable
 *
 * Created by GUY on 2016/1/12.
 * @class BI.CollectionTable
 * @extends BI.Widget
 */
BI.CollectionTable = BI.inherit(BI.Widget, {
    _defaultConfig: function () {
        return BI.extend(BI.CollectionTable.superclass._defaultConfig.apply(this, arguments), {
            baseCls: "bi-collection-table",
            headerRowSize: 25,
            rowSize: 25,
            columnSize: [],
            isNeedFreeze: false,
            freezeCols: [],
            isNeedMerge: false,
            mergeCols: [],
            mergeRule: BI.emptyFn,
            header: [],
            items: [],
            regionColumnSize: []
        });
    },

    _init: function () {
        BI.CollectionTable.superclass._init.apply(this, arguments);
        var self = this, o = this.options;
        this._width = 0;
        this._height = 0;
        this._scrollBarSize = BI.DOM.getScrollWidth();
        this.topLeftCollection = BI.createWidget({
            type: "bi.collection_view",
            cellSizeAndPositionGetter: function (index) {
                return self.topLeftItems[index];
            }
        });
        this.topLeftCollection.on(BI.Collection.EVENT_SCROLL, function (scroll) {
            self.bottomLeftCollection.setScrollLeft(scroll.scrollLeft);
            self._populateScrollbar();
            self.fireEvent(BI.Table.EVENT_TABLE_SCROLL, arguments);
        });
        this.topRightCollection = BI.createWidget({
            type: "bi.collection_view",
            cellSizeAndPositionGetter: function (index) {
                return self.topRightItems[index];
            }
        });
        this.topRightCollection.on(BI.Collection.EVENT_SCROLL, function (scroll) {
            self.bottomRightCollection.setScrollLeft(scroll.scrollLeft);
            self._populateScrollbar();
            self.fireEvent(BI.Table.EVENT_TABLE_SCROLL, arguments);
        });
        this.bottomLeftCollection = BI.createWidget({
            type: "bi.collection_view",
            cellSizeAndPositionGetter: function (index) {
                return self.bottomLeftItems[index];
            }
        });
        this.bottomLeftCollection.on(BI.Collection.EVENT_SCROLL, function (scroll) {
            self.bottomRightCollection.setScrollTop(scroll.scrollTop);
            self.topLeftCollection.setScrollLeft(scroll.scrollLeft);
            self._populateScrollbar();
            self.fireEvent(BI.Table.EVENT_TABLE_SCROLL, arguments);
        });
        this.bottomRightCollection = BI.createWidget({
            type: "bi.collection_view",
            cellSizeAndPositionGetter: function (index) {
                return self.bottomRightItems[index];
            }
        });
        this.bottomRightCollection.on(BI.Collection.EVENT_SCROLL, function (scroll) {
            self.bottomLeftCollection.setScrollTop(scroll.scrollTop);
            self.topRightCollection.setScrollLeft(scroll.scrollLeft);
            self._populateScrollbar();
            self.fireEvent(BI.Table.EVENT_TABLE_SCROLL, arguments);
        });
        this.topLeft = BI.createWidget({
            type: "bi.vertical",
            scrollable: false,
            scrolly: false,
            items: [this.topLeftCollection]
        });
        this.topRight = BI.createWidget({
            type: "bi.vertical",
            scrollable: false,
            scrolly: false,
            items: [this.topRightCollection]
        });
        this.bottomLeft = BI.createWidget({
            type: "bi.vertical",
            scrollable: false,
            scrolly: false,
            items: [this.bottomLeftCollection]
        });
        this.bottomRight = BI.createWidget({
            type: "bi.vertical",
            scrollable: false,
            scrolly: false,
            items: [this.bottomRightCollection]
        });
        this.contextLayout = BI.createWidget({
            type: "bi.absolute",
            element: this,
            items: [{
                el: this.topLeft,
                top: 0,
                left: 0
            }, {
                el: this.topRight,
                top: 0
            }, {
                el: this.bottomLeft,
                left: 0
            }, {
                el: this.bottomRight
            }]
        });

        this.topScrollbar = BI.createWidget({
            type: "bi.grid_table_scrollbar",
            width: BI.GridTableScrollbar.SIZE
        });
        this.topScrollbar.on(BI.GridTableScrollbar.EVENT_SCROLL, function (scrollTop) {
            self.bottomLeftCollection.setScrollTop(scrollTop);
            self.bottomRightCollection.setScrollTop(scrollTop);
            self.fireEvent(BI.Table.EVENT_TABLE_SCROLL, arguments);
        });
        this.leftScrollbar = BI.createWidget({
            type: "bi.grid_table_horizontal_scrollbar",
            height: BI.GridTableScrollbar.SIZE
        });
        this.leftScrollbar.on(BI.GridTableScrollbar.EVENT_SCROLL, function (scrollLeft) {
            self.topLeftCollection.setScrollLeft(scrollLeft);
            self.bottomLeftCollection.setScrollLeft(scrollLeft);
            self.fireEvent(BI.Table.EVENT_TABLE_SCROLL, arguments);
        });
        this.rightScrollbar = BI.createWidget({
            type: "bi.grid_table_horizontal_scrollbar",
            height: BI.GridTableScrollbar.SIZE
        });
        this.rightScrollbar.on(BI.GridTableScrollbar.EVENT_SCROLL, function (scrollLeft) {
            self.topRightCollection.setScrollLeft(scrollLeft);
            self.bottomRightCollection.setScrollLeft(scrollLeft);
            self.fireEvent(BI.Table.EVENT_TABLE_SCROLL, arguments);
        });
        this.scrollBarLayout = BI.createWidget({
            type: "bi.absolute",
            element: this,
            items: [{
                el: this.topScrollbar,
                right: 0,
                top: 0
            }, {
                el: this.leftScrollbar,
                left: 0
            }, {
                el: this.rightScrollbar,
            }]
        });
        this._width = o.width - BI.GridTableScrollbar.SIZE;
        this._height = o.height - BI.GridTableScrollbar.SIZE;
        if (o.items.length > 0 || o.header.length < 0) {
            this._digest();
            this._populate();
        }
    },

    _getFreezeColLength: function () {
        return this.options.isNeedFreeze ? this.options.freezeCols.length : 0;
    },

    _populateScrollbar: function () {
        var o = this.options;
        var regionSize = this.getRegionSize(), totalLeftColumnSize = 0, totalRightColumnSize = 0, totalColumnSize = 0, summaryColumnSizeArray = [], totalRowSize = o.items.length * o.rowSize;
        var freezeColLength = this._getFreezeColLength();
        BI.each(o.columnSize, function (i, size) {
            if (o.isNeedFreeze === true && o.freezeCols.contains(i)) {
                totalLeftColumnSize += size;
            } else {
                totalRightColumnSize += size;
            }
            totalColumnSize += size;
            if (i === 0) {
                summaryColumnSizeArray[i] = size;
            } else {
                summaryColumnSizeArray[i] = summaryColumnSizeArray[i - 1] + size;
            }
        });
        this.topScrollbar.setContentSize(o.items.length * o.rowSize);
        this.topScrollbar.setSize(this._height - o.header.length * o.headerRowSize);
        this.topScrollbar.setPosition(this.bottomRightCollection.getScrollTop());
        this.topScrollbar.populate();

        this.leftScrollbar.setContentSize(totalLeftColumnSize);
        this.leftScrollbar.setSize(regionSize);
        this.leftScrollbar.setPosition(this.bottomLeftCollection.getScrollLeft());
        this.leftScrollbar.populate();

        this.rightScrollbar.setContentSize(totalRightColumnSize);
        this.rightScrollbar.setSize(this._width - regionSize);
        this.rightScrollbar.setPosition(this.bottomRightCollection.getScrollLeft());
        this.rightScrollbar.populate();

        var items = this.scrollBarLayout.attr("items");
        items[0].top = o.header.length * o.headerRowSize;
        items[1].top = this._height;
        items[2].top = this._height;
        items[2].left = regionSize;
        this.scrollBarLayout.attr("items", items);
        this.scrollBarLayout.resize();
    },

    _populateTable: function () {
        var self = this, o = this.options;
        var regionSize = this.getRegionSize(), totalLeftColumnSize = 0, totalRightColumnSize = 0, totalColumnSize = 0, summaryColumnSizeArray = [], totalRowSize = o.items.length * o.rowSize;
        var freezeColLength = this._getFreezeColLength();
        BI.each(o.columnSize, function (i, size) {
            if (o.isNeedFreeze === true && o.freezeCols.contains(i)) {
                totalLeftColumnSize += size;
            } else {
                totalRightColumnSize += size;
            }
            totalColumnSize += size;
            if (i === 0) {
                summaryColumnSizeArray[i] = size;
            } else {
                summaryColumnSizeArray[i] = summaryColumnSizeArray[i - 1] + size;
            }
        });

        var tlw = regionSize;
        var tlh = regionSize >= summaryColumnSizeArray[freezeColLength - 1] ? (o.header.length * o.headerRowSize) : (o.header.length * o.headerRowSize + this._scrollBarSize);
        var trw = this._width - regionSize;
        var trh = (this._width - regionSize >= totalColumnSize - (summaryColumnSizeArray[freezeColLength - 1] || 0)) ? (o.header.length * o.headerRowSize) : (o.header.length * o.headerRowSize + this._scrollBarSize);
        var blw = (this._height - o.header.length * o.headerRowSize >= totalRowSize) ? regionSize : (regionSize + this._scrollBarSize);
        var blh = (regionSize >= (summaryColumnSizeArray[freezeColLength - 1] || 0)) ? (this._height - o.header.length * o.headerRowSize) : (this._height - o.header.length * o.headerRowSize + this._scrollBarSize);
        var brw = (this._height - o.header.length * o.headerRowSize >= totalRowSize) ? (this._width - regionSize) : (this._width - regionSize + this._scrollBarSize);
        var brh = (this._width - regionSize >= totalColumnSize - (summaryColumnSizeArray[freezeColLength - 1] || 0)) ? (this._height - o.header.length * o.headerRowSize) : (this._height - o.header.length * o.headerRowSize + this._scrollBarSize);

        var otlw = regionSize;
        var otlh = o.header.length * o.headerRowSize;
        var otrw = this._width - regionSize;
        var otrh = o.header.length * o.headerRowSize;
        var oblw = regionSize;
        var oblh = this._height - o.header.length * o.headerRowSize;
        var obrw = this._width - regionSize;
        var obrh = this._height - o.header.length * o.headerRowSize;

        var digest = function (w, h, tw, th, el) {
            if (w >= tw && h >= th) {
                el.element.css({
                    overflow: "hidden",
                    overflowX: "hidden",
                    overflowY: "hidden"
                })
            } else if (w >= tw) {
                el.element.css({
                    overflow: "hidden",
                    overflowX: "hidden",
                    overflowY: "auto"
                })
            } else if (h >= th) {
                el.element.css({
                    overflow: "hidden",
                    overflowX: "auto",
                    overflowY: "hidden"
                })
            } else {
                el.element.css({
                    overflow: "auto",
                    overflowX: "auto",
                    overflowY: "auto"
                })
            }
        };

        this.topLeft.setWidth(otlw);
        this.topLeft.setHeight(otlh);
        this.topRight.setWidth(otrw);
        this.topRight.setHeight(otrh);
        this.bottomLeft.setWidth(oblw);
        this.bottomLeft.setHeight(oblh);
        this.bottomRight.setWidth(obrw);
        this.bottomRight.setHeight(obrh);

        this.topLeftCollection.setWidth(tlw);
        this.topLeftCollection.setHeight(tlh);
        this.topRightCollection.setWidth(trw);
        this.topRightCollection.setHeight(trh);
        this.bottomLeftCollection.setWidth(blw);
        this.bottomLeftCollection.setHeight(blh);
        this.bottomRightCollection.setWidth(brw);
        this.bottomRightCollection.setHeight(brh);

        digest(tlw, tlh, totalLeftColumnSize, o.header.length * o.headerRowSize, this.topLeftCollection);
        digest(trw, trh, totalRightColumnSize, o.header.length * o.headerRowSize, this.topRightCollection);
        digest(blw, blh, totalLeftColumnSize, o.items.length * o.rowSize, this.bottomLeftCollection);
        digest(brw, brh, totalRightColumnSize, o.items.length * o.rowSize, this.bottomRightCollection);

        var items = this.contextLayout.attr("items");
        items[1].left = regionSize;
        items[2].top = o.header.length * o.headerRowSize;
        items[3].left = regionSize;
        items[3].top = o.header.length * o.headerRowSize;
        this.contextLayout.attr("items", items);
        this.contextLayout.resize();

        var leftHeader = [], rightHeader = [], leftItems = [], rightItems = [];
        var run = function (positions, items, rendered) {
            BI.each(positions, function (i, item) {
                var cell = {
                    type: "bi.collection_table_cell",
                    cell: items[item.row][item.col]
                };
                rendered.push(cell);
            });
        };
        run(this.topLeftItems, o.header, leftHeader);
        run(this.topRightItems, o.header, rightHeader);
        run(this.bottomLeftItems, o.items, leftItems);
        run(this.bottomRightItems, o.items, rightItems);

        this.topLeftCollection.populate(leftHeader);
        this.topRightCollection.populate(rightHeader);
        this.bottomLeftCollection.populate(leftItems);
        this.bottomRightCollection.populate(rightItems);
    },

    _digest: function () {
        var o = this.options;
        var freezeColLength = this._getFreezeColLength();
        this.topLeftItems = this._serialize(o.header, 0, freezeColLength, o.headerRowSize, o.columnSize, o.mergeCols);
        this.topRightItems = this._serialize(o.header, freezeColLength, o.columnSize.length, o.headerRowSize, o.columnSize, true);
        this.bottomLeftItems = this._serialize(o.items, 0, freezeColLength, o.rowSize, o.columnSize, o.mergeCols);
        this.bottomRightItems = this._serialize(o.items, freezeColLength, o.columnSize.length, o.rowSize, o.columnSize, o.mergeCols);
    },

    _serialize: function (items, startCol, endCol, rowHeight, columnSize, mergeCols) {
        var self = this, o = this.options;
        var result = [], cache = {}, preCol = {}, preRow = {}, map = {};
        var summaryColumnSize = [];
        for (var i = startCol; i < endCol; i++) {
            if (i === startCol) {
                summaryColumnSize[i] = columnSize[i];
            } else {
                summaryColumnSize[i] = summaryColumnSize[i - 1] + columnSize[i];
            }
        }
        var mergeRow = function (i, j) {
            preCol[j]._height += rowHeight;
            preCol[j].__mergeRows.push(i);
        };

        var mergeCol = function (i, j) {
            preRow[i]._width += columnSize[j];
            preRow[i].__mergeCols.push(j);
        };

        var createOneEl = function (r, c) {
            var width = columnSize[c];
            var height = rowHeight;
            map[r][c]._row = r;
            map[r][c]._col = c;
            map[r][c]._width = width;
            map[r][c]._height = height;
            preCol[c] = map[r][c];
            preCol[c].__mergeRows = [r];
            preRow[r] = map[r][c];
            preRow[r].__mergeCols = [c];

            result.push({
                x: summaryColumnSize[c] - columnSize[c],
                y: +r * rowHeight,
                item: map[r][c]
            });
        };

        BI.each(items, function (i, cols) {
            for (var j = startCol; j < endCol; j++) {
                if (!cache[i]) {
                    cache[i] = {};
                }
                if (!map[i]) {
                    map[i] = {};
                }
                cache[i][j] = cols[j];
                map[i][j] = {};
                if (mergeCols === true || mergeCols.indexOf(j) > -1) {
                    if (i === 0 && j === startCol) {
                        createOneEl(0, startCol);
                    } else if (j === startCol && i > 0) {
                        var isNeedMergeRow = o.mergeRule(cache[i][j], cache[i - 1][j]);
                        if (isNeedMergeRow === true) {
                            mergeRow(i, j);
                            preRow[i] = preCol[j];
                        } else {
                            createOneEl(i, j);
                        }
                    } else if (i === 0 && j > startCol) {
                        var isNeedMergeCol = o.mergeRule(cache[i][j], cache[i][j - 1]);
                        if (isNeedMergeCol === true) {
                            mergeCol(i, j);
                            preCol[j] = preRow[i];
                        } else {
                            createOneEl(i, j);
                        }
                    } else {
                        var isNeedMergeRow = o.mergeRule(cache[i][j], cache[i - 1][j]);
                        var isNeedMergeCol = o.mergeRule(cache[i][j], cache[i][j - 1]);
                        if (isNeedMergeCol && isNeedMergeRow) {
                            continue;
                            //mergeRow(i, j);//优先合并列
                        }
                        if (isNeedMergeCol) {
                            mergeCol(i, j);
                        }
                        if (isNeedMergeRow) {
                            mergeRow(i, j);
                        }
                        if (!isNeedMergeCol && !isNeedMergeRow) {
                            createOneEl(i, j);
                        }
                    }
                } else {
                    createOneEl(i, j);
                }
            }
        });
        return BI.map(result, function (i, item) {
            return {
                x: item.x,
                y: item.y,
                row: item.item._row,
                col: item.item._col,
                width: item.item._width,
                height: item.item._height
            }
        });
    },

    _populate: function () {
        if (this._width <= 0 || this._height <= 0) {
            return;
        }
        if (this._isNeedDigest === true) {
            this._digest();
        }
        this._populateTable();
        this._populateScrollbar();
    },

    getRegionSize: function () {
        var o = this.options;
        var regionSize = o.regionColumnSize[0] || 0;
        if (o.isNeedFreeze === false || o.freezeCols.length === 0) {
            return 0;
        }
        if (!regionSize) {
            BI.each(o.freezeCols, function (i, col) {
                regionSize += o.columnSize[col];
            });
        }
        return regionSize;
    },

    setVerticalScroll: function (scrollTop) {
        this.bottomLeftCollection.setScrollTop(scrollTop);
        this.bottomRightCollection.setScrollTop(scrollTop);
    },

    setLeftHorizontalScroll: function (scrollLeft) {
        this.topLeftCollection.setScrollLeft(scrollLeft);
        this.bottomLeftCollection.setScrollLeft(scrollLeft);
    },

    setRightHorizontalScroll: function (scrollLeft) {
        this.topRightCollection.setScrollLeft(scrollLeft);
        this.bottomRightCollection.setScrollLeft(scrollLeft);
    },

    getVerticalScroll: function () {
        return this.bottomRightCollection.getScrollTop();
    },

    getLeftHorizontalScroll: function () {
        return this.bottomLeftCollection.getScrollLeft();
    },

    getRightHorizontalScroll: function () {
        return this.bottomRightCollection.getScrollLeft();
    },

    setWidth: function (width) {
        BI.CollectionTable.superclass.setWidth.apply(this, arguments);
        this._width = this.options.width - BI.GridTableScrollbar.SIZE;
    },

    setHeight: function (height) {
        BI.CollectionTable.superclass.setHeight.apply(this, arguments);
        this._height = this.options.height - BI.GridTableScrollbar.SIZE;
    },

    setColumnSize: function (columnSize) {
        this._isNeedDigest = true;
        this.options.columnSize = columnSize;
    },

    setRegionColumnSize: function (regionColumnSize) {
        this._isNeedDigest = true;
        this.options.regionColumnSize = regionColumnSize;
    },

    getColumnSize: function () {
        return this.options.columnSize;
    },

    getRegionColumnSize: function () {
        return this.options.regionColumnSize;
    },

    populate: function (items, header) {
        if (items && items !== this.options.items) {
            this._isNeedDigest = true;
            this.options.items = items;
            this._restore();
        }
        if (header && header !== this.options.header) {
            this._isNeedDigest = true;
            this.options.header = header;
            this._restore();
        }
        this._populate();
    },

    _restore: function () {
        this.topLeftCollection.restore();
        this.topRightCollection.restore();
        this.bottomLeftCollection.restore();
        this.bottomRightCollection.restore();
    },

    restore: function () {
        this._restore();
    }
});
$.shortcut('bi.collection_table', BI.CollectionTable);/**
 * QuickCollectionTable
 *
 * Created by GUY on 2016/1/12.
 * @class BI.QuickCollectionTable
 * @extends BI.CollectionTable
 */
BI.QuickCollectionTable = BI.inherit(BI.CollectionTable, {
    _defaultConfig: function () {
        return BI.extend(BI.QuickCollectionTable.superclass._defaultConfig.apply(this, arguments), {
            extraCls: "bi-quick-collection-table"
        });
    },

    _init: function () {
        BI.QuickCollectionTable.superclass._init.apply(this, arguments);
        var self = this, o = this.options;
        this.topLeftCollection.setOverflowX(false);
        this.topLeftCollection.setOverflowY(false);
        this.topRightCollection.setOverflowX(false);
        this.topRightCollection.setOverflowY(false);
        this.bottomLeftCollection.setOverflowX(false);
        this.bottomLeftCollection.setOverflowY(false);
        this.bottomRightCollection.setOverflowX(false);
        this.bottomRightCollection.setOverflowY(false);
        this._leftWheelHandler = new BI.WheelHandler(
            BI.bind(this._onWheelY, this),
            BI.bind(this._shouldHandleX, this),
            BI.bind(this._shouldHandleY, this)
        );
        this._rightWheelHandler = new BI.WheelHandler(
            BI.bind(this._onWheelY, this),
            BI.bind(this._shouldHandleX, this),
            BI.bind(this._shouldHandleY, this)
        );
        this.bottomLeftCollection.element.mousewheel(function (e) {
            self._leftWheelHandler.onWheel(e.originalEvent);
        });
        this.bottomRightCollection.element.mousewheel(function (e) {
            self._rightWheelHandler.onWheel(e.originalEvent);
        });
    },

    _shouldHandleX: function (delta) {
        return false;
    },

    _shouldHandleY: function (delta) {
        if (delta > 0) {
            return this.bottomRightCollection.getScrollTop() < this.bottomRightCollection.getMaxScrollTop();
        } else {
            return this.bottomRightCollection.getScrollTop() > 0;
        }
    },

    _onWheelY: function (deltaX, deltaY) {
        var self = this;
        var scrollTop = this.bottomRightCollection.getScrollTop();
        scrollTop += deltaY;
        this.bottomLeftCollection.setScrollTop(scrollTop);
        this.bottomRightCollection.setScrollTop(scrollTop);
        self._populateScrollbar();
        this.fireEvent(BI.Table.EVENT_TABLE_SCROLL, arguments);
    },

    _populateTable: function () {
        var self = this, o = this.options;
        var regionSize = this.getRegionSize(), totalLeftColumnSize = 0, totalRightColumnSize = 0, totalColumnSize = 0, summaryColumnSizeArray = [], totalRowSize = o.items.length * o.rowSize;
        var freezeColLength = this._getFreezeColLength();
        BI.each(o.columnSize, function (i, size) {
            if (o.isNeedFreeze === true && o.freezeCols.contains(i)) {
                totalLeftColumnSize += size;
            } else {
                totalRightColumnSize += size;
            }
            totalColumnSize += size;
            if (i === 0) {
                summaryColumnSizeArray[i] = size;
            } else {
                summaryColumnSizeArray[i] = summaryColumnSizeArray[i - 1] + size;
            }
        });

        var otlw = regionSize;
        var otlh = o.header.length * o.headerRowSize;
        var otrw = this._width - regionSize;
        var otrh = o.header.length * o.headerRowSize;
        var oblw = regionSize;
        var oblh = this._height - o.header.length * o.headerRowSize;
        var obrw = this._width - regionSize;
        var obrh = this._height - o.header.length * o.headerRowSize;

        this.topLeft.setWidth(otlw);
        this.topLeft.setHeight(otlh);
        this.topRight.setWidth(otrw);
        this.topRight.setHeight(otrh);
        this.bottomLeft.setWidth(oblw);
        this.bottomLeft.setHeight(oblh);
        this.bottomRight.setWidth(obrw);
        this.bottomRight.setHeight(obrh);

        this.topLeftCollection.setWidth(otlw);
        this.topLeftCollection.setHeight(otlh);
        this.topRightCollection.setWidth(otrw);
        this.topRightCollection.setHeight(otrh);
        this.bottomLeftCollection.setWidth(oblw);
        this.bottomLeftCollection.setHeight(oblh);
        this.bottomRightCollection.setWidth(obrw);
        this.bottomRightCollection.setHeight(obrh);

        var items = this.contextLayout.attr("items");
        items[1].left = regionSize;
        items[2].top = o.header.length * o.headerRowSize;
        items[3].left = regionSize;
        items[3].top = o.header.length * o.headerRowSize;
        this.contextLayout.attr("items", items);
        this.contextLayout.resize();

        var leftHeader = [], rightHeader = [], leftItems = [], rightItems = [];
        var run = function (positions, items, rendered) {
            BI.each(positions, function (i, item) {
                var cell = {
                    type: "bi.collection_table_cell",
                    cell: items[item.row][item.col]
                };
                rendered.push(cell);
            });
        };
        run(this.topLeftItems, o.header, leftHeader);
        run(this.topRightItems, o.header, rightHeader);
        run(this.bottomLeftItems, o.items, leftItems);
        run(this.bottomRightItems, o.items, rightItems);

        this.topLeftCollection.populate(leftHeader);
        this.topRightCollection.populate(rightHeader);
        this.bottomLeftCollection.populate(leftItems);
        this.bottomRightCollection.populate(rightItems);
    }
});
$.shortcut('bi.quick_collection_table', BI.QuickCollectionTable);/**
 *
 * 表格单元格
 *
 * Created by GUY on 2016/1/12.
 * @class BI.GridTableCell
 * @extends BI.Widget
 */
BI.GridTableCell = BI.inherit(BI.Widget, {
    _defaultConfig: function () {
        return BI.extend(BI.GridTableCell.superclass._defaultConfig.apply(this, arguments), {
            baseCls: "bi-grid-table-cell",
            width: 0,
            height: 0,
            _rowIndex: 0,
            _columnIndex: 0,
            _left: 0,
            _top: 0,
            cell: {}
        })
    },

    _init: function () {
        BI.GridTableCell.superclass._init.apply(this, arguments);
        var o = this.options;
        this.cell = BI.createWidget(BI.extend({
            type: "bi.label"
        }, o.cell, {
            cls: (o.cell.cls || "") + "grid-table-cell-wrapper",
            width: o.width - (o._columnIndex === 0 ? 1 : 0) - 1,
            height: o.height - (o._rowIndex === 0 ? 1 : 0) - 1
        }));
        BI.createWidget({
            type: "bi.absolute",
            element: this,
            items: [{
                el: this.cell,
                left: 0,
                right: 0,
                top: 0,
                bottom: 0
            }]
        });
    },

    setWidth: function (width) {
        BI.GridTableCell.superclass.setWidth.apply(this, arguments);
        var o = this.options;
        this.cell.setWidth(o.width - (o._columnIndex === 0 ? 1 : 0) - 1);
    },

    setHeight: function (height) {
        BI.GridTableCell.superclass.setHeight.apply(this, arguments);
        var o = this.options;
        this.cell.setHeight(o.height - (o._rowIndex === 0 ? 1 : 0) - 1);
    }
});

$.shortcut("bi.grid_table_cell", BI.GridTableCell);/**
 * GridTable
 *
 * Created by GUY on 2016/1/12.
 * @class BI.GridTable
 * @extends BI.Widget
 */
BI.GridTable = BI.inherit(BI.Widget, {
    _defaultConfig: function () {
        return BI.extend(BI.GridTable.superclass._defaultConfig.apply(this, arguments), {
            baseCls: "bi-grid-table",
            headerRowSize: 25,
            rowSize: 25,
            columnSize: [],
            isNeedFreeze: false,
            freezeCols: [],
            header: [],
            items: [],
            regionColumnSize: []
        });
    },

    _init: function () {
        BI.GridTable.superclass._init.apply(this, arguments);
        var self = this, o = this.options;
        this._width = 0;
        this._height = 0;
        this._scrollBarSize = BI.DOM.getScrollWidth();
        var rowHeightGetter = function () {
            return o.rowSize;
        };
        var columnLeftWidthGetter = function (index) {
            return o.columnSize[index];
        };
        var columnRightWidthGetter = function (index) {
            return o.columnSize[index + self._getFreezeColLength()];
        };
        this.topLeftGrid = BI.createWidget({
            type: "bi.grid_view",
            rowHeightGetter: rowHeightGetter,
            columnWidthGetter: columnLeftWidthGetter,
        });
        this.topLeftGrid.on(BI.Grid.EVENT_SCROLL, function (scroll) {
            self.bottomLeftGrid.setScrollLeft(scroll.scrollLeft);
            self._populateScrollbar();
            self.fireEvent(BI.Table.EVENT_TABLE_SCROLL, arguments);
        });
        this.topRightGrid = BI.createWidget({
            type: "bi.grid_view",
            rowHeightGetter: rowHeightGetter,
            columnWidthGetter: columnRightWidthGetter,
        });
        this.topRightGrid.on(BI.Grid.EVENT_SCROLL, function (scroll) {
            self.bottomRightGrid.setScrollLeft(scroll.scrollLeft);
            self._populateScrollbar();
            self.fireEvent(BI.Table.EVENT_TABLE_SCROLL, arguments);
        });
        this.bottomLeftGrid = BI.createWidget({
            type: "bi.grid_view",
            rowHeightGetter: rowHeightGetter,
            columnWidthGetter: columnLeftWidthGetter,
        });
        this.bottomLeftGrid.on(BI.Grid.EVENT_SCROLL, function (scroll) {
            self.bottomRightGrid.setScrollTop(scroll.scrollTop);
            self.topLeftGrid.setScrollLeft(scroll.scrollLeft);
            self._populateScrollbar();
            self.fireEvent(BI.Table.EVENT_TABLE_SCROLL, arguments);
        });
        this.bottomRightGrid = BI.createWidget({
            type: "bi.grid_view",
            rowHeightGetter: rowHeightGetter,
            columnWidthGetter: columnRightWidthGetter,
        });
        this.bottomRightGrid.on(BI.Grid.EVENT_SCROLL, function (scroll) {
            self.bottomLeftGrid.setScrollTop(scroll.scrollTop);
            self.topRightGrid.setScrollLeft(scroll.scrollLeft);
            self._populateScrollbar();
            self.fireEvent(BI.Table.EVENT_TABLE_SCROLL, arguments);
        });
        this.topLeft = BI.createWidget({
            type: "bi.vertical",
            scrollable: false,
            scrolly: false,
            items: [this.topLeftGrid]
        });
        this.topRight = BI.createWidget({
            type: "bi.vertical",
            scrollable: false,
            scrolly: false,
            items: [this.topRightGrid]
        });
        this.bottomLeft = BI.createWidget({
            type: "bi.vertical",
            scrollable: false,
            scrolly: false,
            items: [this.bottomLeftGrid]
        });
        this.bottomRight = BI.createWidget({
            type: "bi.vertical",
            scrollable: false,
            scrolly: false,
            items: [this.bottomRightGrid]
        });
        this.contextLayout = BI.createWidget({
            type: "bi.absolute",
            element: this,
            items: [{
                el: this.topLeft,
                top: 0,
                left: 0
            }, {
                el: this.topRight,
                top: 0
            }, {
                el: this.bottomLeft,
                left: 0
            }, {
                el: this.bottomRight
            }]
        });

        this.topScrollbar = BI.createWidget({
            type: "bi.grid_table_scrollbar",
            width: BI.GridTableScrollbar.SIZE
        });
        this.topScrollbar.on(BI.GridTableScrollbar.EVENT_SCROLL, function (scrollTop) {
            self.bottomLeftGrid.setScrollTop(scrollTop);
            self.bottomRightGrid.setScrollTop(scrollTop);
            self.fireEvent(BI.Table.EVENT_TABLE_SCROLL, arguments);
        });
        this.leftScrollbar = BI.createWidget({
            type: "bi.grid_table_horizontal_scrollbar",
            height: BI.GridTableScrollbar.SIZE
        });
        this.leftScrollbar.on(BI.GridTableHorizontalScrollbar.EVENT_SCROLL, function (scrollLeft) {
            self.topLeftGrid.setScrollLeft(scrollLeft);
            self.bottomLeftGrid.setScrollLeft(scrollLeft);
            self.fireEvent(BI.Table.EVENT_TABLE_SCROLL, arguments);
        });
        this.rightScrollbar = BI.createWidget({
            type: "bi.grid_table_horizontal_scrollbar",
            height: BI.GridTableScrollbar.SIZE
        });
        this.rightScrollbar.on(BI.GridTableHorizontalScrollbar.EVENT_SCROLL, function (scrollLeft) {
            self.topRightGrid.setScrollLeft(scrollLeft);
            self.bottomRightGrid.setScrollLeft(scrollLeft);
            self.fireEvent(BI.Table.EVENT_TABLE_SCROLL, arguments);
        });
        this.scrollBarLayout = BI.createWidget({
            type: "bi.absolute",
            element: this,
            items: [{
                el: this.topScrollbar,
                right: 0,
                top: 0
            }, {
                el: this.leftScrollbar,
                left: 0
            }, {
                el: this.rightScrollbar,
            }]
        });
        this._width = o.width - BI.GridTableScrollbar.SIZE;
        this._height = o.height - BI.GridTableScrollbar.SIZE;
        this.header = this._getHeader();
        this.items = this._getItems();
        if (o.items.length > 0) {
            this._populate();
        }
    },

    _getFreezeColLength: function () {
        return this.options.isNeedFreeze ? this.options.freezeCols.length : 0;
    },

    _populateScrollbar: function () {
        var o = this.options;
        var regionSize = this.getRegionSize(), totalLeftColumnSize = 0, totalRightColumnSize = 0, totalColumnSize = 0, summaryColumnSizeArray = [], totalRowSize = o.items.length * o.rowSize;
        var freezeColLength = this._getFreezeColLength();
        BI.each(o.columnSize, function (i, size) {
            if (o.isNeedFreeze === true && o.freezeCols.contains(i)) {
                totalLeftColumnSize += size;
            } else {
                totalRightColumnSize += size;
            }
            totalColumnSize += size;
            if (i === 0) {
                summaryColumnSizeArray[i] = size;
            } else {
                summaryColumnSizeArray[i] = summaryColumnSizeArray[i - 1] + size;
            }
        });
        this.topScrollbar.setContentSize(o.items.length * o.rowSize);
        this.topScrollbar.setSize(this._height - o.header.length * o.headerRowSize);
        this.topScrollbar.setPosition(Math.min(this.bottomLeftGrid.getScrollTop(), this.bottomRightGrid.getScrollTop()));
        this.topScrollbar.populate();

        this.leftScrollbar.setContentSize(totalLeftColumnSize);
        this.leftScrollbar.setSize(regionSize);
        this.leftScrollbar.setPosition(this.bottomLeftGrid.getScrollLeft());
        this.leftScrollbar.populate();

        this.rightScrollbar.setContentSize(totalRightColumnSize);
        this.rightScrollbar.setSize(this._width - regionSize);
        this.rightScrollbar.setPosition(this.bottomRightGrid.getScrollLeft());
        this.rightScrollbar.populate();

        var items = this.scrollBarLayout.attr("items");
        items[0].top = o.header.length * o.headerRowSize;
        items[1].top = this._height;
        items[2].top = this._height;
        items[2].left = regionSize;
        this.scrollBarLayout.attr("items", items);
        this.scrollBarLayout.resize();
    },

    _getHeader: function () {
        var o = this.options;
        var freezeColLength = this._getFreezeColLength();
        var leftHeader = [], rightHeader = [];
        BI.each(o.header, function (i, cols) {
            leftHeader[i] = [];
            rightHeader[i] = [];
            BI.each(cols, function (j, col) {
                var cell = {
                    type: "bi.grid_table_cell",
                    cell: col
                };
                if (j < freezeColLength) {
                    leftHeader[i].push(cell);
                } else {
                    rightHeader[i].push(cell);
                }
            });
        });
        return [leftHeader, rightHeader];
    },

    _getItems: function () {
        var o = this.options;
        var freezeColLength = this._getFreezeColLength();
        var leftItems = [], rightItems = [];
        BI.each(o.items, function (i, cols) {
            leftItems[i] = [];
            rightItems[i] = [];
            BI.each(cols, function (j, col) {
                var cell = {
                    type: "bi.grid_table_cell",
                    cell: col
                };
                if (j < freezeColLength) {
                    leftItems[i].push(cell);
                } else {
                    rightItems[i].push(cell);
                }
            });
        });
        return [leftItems, rightItems];
    },

    _populateTable: function () {
        var self = this, o = this.options;
        var regionSize = this.getRegionSize(), totalLeftColumnSize = 0, totalRightColumnSize = 0, totalColumnSize = 0, summaryColumnSizeArray = [], totalRowSize = o.items.length * o.rowSize;
        var freezeColLength = this._getFreezeColLength();
        BI.each(o.columnSize, function (i, size) {
            if (o.isNeedFreeze === true && o.freezeCols.contains(i)) {
                totalLeftColumnSize += size;
            } else {
                totalRightColumnSize += size;
            }
            totalColumnSize += size;
            if (i === 0) {
                summaryColumnSizeArray[i] = size;
            } else {
                summaryColumnSizeArray[i] = summaryColumnSizeArray[i - 1] + size;
            }
        });

        var tlw = regionSize;
        var tlh = regionSize >= summaryColumnSizeArray[freezeColLength - 1] ? (o.header.length * o.headerRowSize) : (o.header.length * o.headerRowSize + this._scrollBarSize);
        var trw = this._width - regionSize;
        var trh = (this._width - regionSize >= totalColumnSize - (summaryColumnSizeArray[freezeColLength - 1] || 0)) ? (o.header.length * o.headerRowSize) : (o.header.length * o.headerRowSize + this._scrollBarSize);
        var blw = (this._height - o.header.length * o.headerRowSize >= totalRowSize) ? regionSize : (regionSize + this._scrollBarSize);
        var blh = (regionSize >= (summaryColumnSizeArray[freezeColLength - 1] || 0)) ? (this._height - o.header.length * o.headerRowSize) : (this._height - o.header.length * o.headerRowSize + this._scrollBarSize);
        var brw = (this._height - o.header.length * o.headerRowSize >= totalRowSize) ? (this._width - regionSize) : (this._width - regionSize + this._scrollBarSize);
        var brh = (this._width - regionSize >= totalColumnSize - (summaryColumnSizeArray[freezeColLength - 1] || 0)) ? (this._height - o.header.length * o.headerRowSize) : (this._height - o.header.length * o.headerRowSize + this._scrollBarSize);

        var otlw = regionSize;
        var otlh = o.header.length * o.headerRowSize;
        var otrw = this._width - regionSize;
        var otrh = o.header.length * o.headerRowSize;
        var oblw = regionSize;
        var oblh = this._height - o.header.length * o.headerRowSize;
        var obrw = this._width - regionSize;
        var obrh = this._height - o.header.length * o.headerRowSize;

        var digest = function (w, h, tw, th, el) {
            if (w >= tw && h >= th) {
                el.element.css({
                    overflow: "hidden",
                    overflowX: "hidden",
                    overflowY: "hidden"
                })
            } else if (w >= tw) {
                el.element.css({
                    overflow: "hidden",
                    overflowX: "hidden",
                    overflowY: "auto"
                })
            } else if (h >= th) {
                el.element.css({
                    overflow: "hidden",
                    overflowX: "auto",
                    overflowY: "hidden"
                })
            } else {
                el.element.css({
                    overflow: "auto",
                    overflowX: "auto",
                    overflowY: "auto"
                })
            }
        };

        this.topLeft.setWidth(otlw);
        this.topLeft.setHeight(otlh);
        this.topRight.setWidth(otrw);
        this.topRight.setHeight(otrh);
        this.bottomLeft.setWidth(oblw);
        this.bottomLeft.setHeight(oblh);
        this.bottomRight.setWidth(obrw);
        this.bottomRight.setHeight(obrh);

        this.topLeftGrid.setWidth(tlw);
        this.topLeftGrid.setHeight(tlh);
        this.topRightGrid.setWidth(trw);
        this.topRightGrid.setHeight(trh);
        this.bottomLeftGrid.setWidth(blw);
        this.bottomLeftGrid.setHeight(blh);
        this.bottomRightGrid.setWidth(brw);
        this.bottomRightGrid.setHeight(brh);

        digest(tlw, tlh, totalLeftColumnSize, o.header.length * o.headerRowSize, this.topLeftGrid);
        digest(trw, trh, totalRightColumnSize, o.header.length * o.headerRowSize, this.topRightGrid);
        digest(blw, blh, totalLeftColumnSize, o.items.length * o.rowSize, this.bottomLeftGrid);
        digest(brw, brh, totalRightColumnSize, o.items.length * o.rowSize, this.bottomRightGrid);

        this.topLeftGrid.setEstimatedColumnSize(freezeColLength > 0 ? totalLeftColumnSize / freezeColLength : 0);
        this.topLeftGrid.setEstimatedRowSize(o.headerRowSize);
        this.topRightGrid.setEstimatedColumnSize(totalRightColumnSize / (o.columnSize.length - freezeColLength));
        this.topRightGrid.setEstimatedRowSize(o.headerRowSize);
        this.bottomLeftGrid.setEstimatedColumnSize(freezeColLength > 0 ? totalLeftColumnSize / freezeColLength : 0);
        this.bottomLeftGrid.setEstimatedRowSize(o.rowSize);
        this.bottomRightGrid.setEstimatedColumnSize(totalRightColumnSize / (o.columnSize.length - freezeColLength));
        this.bottomRightGrid.setEstimatedRowSize(o.rowSize);

        var items = this.contextLayout.attr("items");
        items[1].left = regionSize;
        items[2].top = o.header.length * o.headerRowSize;
        items[3].left = regionSize;
        items[3].top = o.header.length * o.headerRowSize;
        this.contextLayout.attr("items", items);
        this.contextLayout.resize();

        this.topLeftGrid.populate(this.header[0]);
        this.topRightGrid.populate(this.header[1]);
        this.bottomLeftGrid.populate(this.items[0]);
        this.bottomRightGrid.populate(this.items[1]);
    },

    _populate: function () {
        if (this._width <= 0 || this._height <= 0) {
            return;
        }
        this._populateTable();
        this._populateScrollbar();
    },

    getRegionSize: function () {
        var o = this.options;
        var regionSize = o.regionColumnSize[0] || 0;
        if (o.isNeedFreeze === false || o.freezeCols.length === 0) {
            return 0;
        }
        if (!regionSize) {
            BI.each(o.freezeCols, function (i, col) {
                regionSize += o.columnSize[col];
            });
        }
        return regionSize;
    },

    setVerticalScroll: function (scrollTop) {
        this.bottomLeftGrid.setScrollTop(scrollTop);
        this.bottomRightGrid.setScrollTop(scrollTop);
    },

    setLeftHorizontalScroll: function (scrollLeft) {
        this.topLeftGrid.setScrollLeft(scrollLeft);
        this.bottomLeftGrid.setScrollLeft(scrollLeft);
    },

    setRightHorizontalScroll: function (scrollLeft) {
        this.topRightGrid.setScrollLeft(scrollLeft);
        this.bottomRightGrid.setScrollLeft(scrollLeft);
    },

    getVerticalScroll: function () {
        return this.bottomRightGrid.getScrollTop();
    },

    getLeftHorizontalScroll: function () {
        return this.bottomLeftGrid.getScrollLeft();
    },

    getRightHorizontalScroll: function () {
        return this.bottomRightGrid.getScrollLeft();
    },

    setWidth: function (width) {
        BI.GridTable.superclass.setWidth.apply(this, arguments);
        this._width = this.options.width - BI.GridTableScrollbar.SIZE;
    },

    setHeight: function (height) {
        BI.GridTable.superclass.setHeight.apply(this, arguments);
        this._height = this.options.height - BI.GridTableScrollbar.SIZE;
    },

    setColumnSize: function (columnSize) {
        this.options.columnSize = columnSize;
    },

    setRegionColumnSize: function (regionColumnSize) {
        this.options.regionColumnSize = regionColumnSize;
    },

    getColumnSize: function () {
        return this.options.columnSize;
    },

    getRegionColumnSize: function () {
        return this.options.regionColumnSize;
    },

    populate: function (items, header) {
        if (items && this.options.items !== items) {
            this.options.items = items;
            this.items = this._getItems();
            this._restore();
        }
        if (header && this.options.header !== header) {
            this.options.header = header;
            this.header = this._getHeader();
            this._restore();
        }
        this._populate();
    },

    _restore: function () {
        this.topLeftGrid.restore();
        this.topRightGrid.restore();
        this.bottomLeftGrid.restore();
        this.bottomRightGrid.restore();
    },

    restore: function () {
        this._restore();
    }
});
$.shortcut('bi.grid_table', BI.GridTable);/**
 * QuickGridTable
 *
 * Created by GUY on 2016/1/12.
 * @class BI.QuickGridTable
 * @extends BI.GridTable
 */
BI.QuickGridTable = BI.inherit(BI.GridTable, {
    _defaultConfig: function () {
        return BI.extend(BI.QuickGridTable.superclass._defaultConfig.apply(this, arguments), {
            extraCls: "bi-quick-grid-table"
        });
    },

    _init: function () {
        BI.QuickGridTable.superclass._init.apply(this, arguments);
        var self = this, o = this.options;
        this.topLeftGrid.setOverflowX(false);
        this.topLeftGrid.setOverflowY(false);
        this.topRightGrid.setOverflowX(false);
        this.topRightGrid.setOverflowY(false);
        this.bottomLeftGrid.setOverflowX(false);
        this.bottomLeftGrid.setOverflowY(false);
        this.bottomRightGrid.setOverflowX(false);
        this.bottomRightGrid.setOverflowY(false);
        this._leftWheelHandler = new BI.WheelHandler(
            BI.bind(this._onWheelY, this),
            BI.bind(this._shouldHandleX, this),
            BI.bind(this._shouldHandleY, this)
        );
        this._rightWheelHandler = new BI.WheelHandler(
            BI.bind(this._onWheelY, this),
            BI.bind(this._shouldHandleX, this),
            BI.bind(this._shouldHandleY, this)
        );
        this.bottomLeftGrid.element.mousewheel(function (e) {
            self._leftWheelHandler.onWheel(e.originalEvent);
        });
        this.bottomRightGrid.element.mousewheel(function (e) {
            self._rightWheelHandler.onWheel(e.originalEvent);
        });
    },

    _shouldHandleX: function (delta) {
        return false;
    },

    _shouldHandleY: function (delta) {
        if (delta > 0) {
            return this.bottomRightGrid.getScrollTop() < this.bottomRightGrid.getMaxScrollTop();
        } else {
            return this.bottomRightGrid.getScrollTop() > 0;
        }
    },

    _onWheelY: function (deltaX, deltaY) {
        var self = this;
        var scrollTop = this.bottomRightGrid.getScrollTop();
        scrollTop += deltaY;
        this.bottomLeftGrid.setScrollTop(scrollTop);
        this.bottomRightGrid.setScrollTop(scrollTop);
        self._populateScrollbar();
        this.fireEvent(BI.Table.EVENT_TABLE_SCROLL, arguments);
    },

    _populateTable: function () {
        var self = this, o = this.options;
        var regionSize = this.getRegionSize(), totalLeftColumnSize = 0, totalRightColumnSize = 0, totalColumnSize = 0, summaryColumnSizeArray = [], totalRowSize = o.items.length * o.rowSize;
        var freezeColLength = this._getFreezeColLength();
        BI.each(o.columnSize, function (i, size) {
            if (o.isNeedFreeze === true && o.freezeCols.contains(i)) {
                totalLeftColumnSize += size;
            } else {
                totalRightColumnSize += size;
            }
            totalColumnSize += size;
            if (i === 0) {
                summaryColumnSizeArray[i] = size;
            } else {
                summaryColumnSizeArray[i] = summaryColumnSizeArray[i - 1] + size;
            }
        });

        var otlw = regionSize;
        var otlh = o.header.length * o.headerRowSize;
        var otrw = this._width - regionSize;
        var otrh = o.header.length * o.headerRowSize;
        var oblw = regionSize;
        var oblh = this._height - o.header.length * o.headerRowSize;
        var obrw = this._width - regionSize;
        var obrh = this._height - o.header.length * o.headerRowSize;

        this.topLeft.setWidth(otlw);
        this.topLeft.setHeight(otlh);
        this.topRight.setWidth(otrw);
        this.topRight.setHeight(otrh);
        this.bottomLeft.setWidth(oblw);
        this.bottomLeft.setHeight(oblh);
        this.bottomRight.setWidth(obrw);
        this.bottomRight.setHeight(obrh);

        this.topLeftGrid.setWidth(otlw);
        this.topLeftGrid.setHeight(otlh);
        this.topRightGrid.setWidth(otrw);
        this.topRightGrid.setHeight(otrh);
        this.bottomLeftGrid.setWidth(oblw);
        this.bottomLeftGrid.setHeight(oblh);
        this.bottomRightGrid.setWidth(obrw);
        this.bottomRightGrid.setHeight(obrh);

        this.topLeftGrid.setEstimatedColumnSize(freezeColLength > 0 ? totalLeftColumnSize / freezeColLength : 0);
        this.topLeftGrid.setEstimatedRowSize(o.headerRowSize);
        this.topRightGrid.setEstimatedColumnSize(totalRightColumnSize / (o.columnSize.length - freezeColLength));
        this.topRightGrid.setEstimatedRowSize(o.headerRowSize);
        this.bottomLeftGrid.setEstimatedColumnSize(freezeColLength > 0 ? totalLeftColumnSize / freezeColLength : 0);
        this.bottomLeftGrid.setEstimatedRowSize(o.rowSize);
        this.bottomRightGrid.setEstimatedColumnSize(totalRightColumnSize / (o.columnSize.length - freezeColLength));
        this.bottomRightGrid.setEstimatedRowSize(o.rowSize);

        var items = this.contextLayout.attr("items");
        items[1].left = regionSize;
        items[2].top = o.header.length * o.headerRowSize;
        items[3].left = regionSize;
        items[3].top = o.header.length * o.headerRowSize;
        this.contextLayout.attr("items", items);
        this.contextLayout.resize();

        var leftHeader = [], rightHeader = [], leftItems = [], rightItems = [];
        BI.each(o.header, function (i, cols) {
            leftHeader[i] = [];
            rightHeader[i] = [];
            BI.each(cols, function (j, col) {
                var cell = {
                    type: "bi.grid_table_cell",
                    cell: col
                };
                if (j < freezeColLength) {
                    leftHeader[i].push(cell);
                } else {
                    rightHeader[i].push(cell);
                }
            });
        });
        BI.each(o.items, function (i, cols) {
            leftItems[i] = [];
            rightItems[i] = [];
            BI.each(cols, function (j, col) {
                var cell = {
                    type: "bi.grid_table_cell",
                    cell: col
                };
                if (j < freezeColLength) {
                    leftItems[i].push(cell);
                } else {
                    rightItems[i].push(cell);
                }
            });
        });
        this.topLeftGrid.populate(leftHeader);
        this.topRightGrid.populate(rightHeader);
        this.bottomLeftGrid.populate(leftItems);
        this.bottomRightGrid.populate(rightItems);
    }
});
$.shortcut('bi.quick_grid_table', BI.QuickGridTable);/**
 *
 * 表格滚动条
 *
 * Created by GUY on 2016/1/12.
 * @class BI.GridTableScrollbar
 * @extends BI.Widget
 */
BI.GridTableScrollbar = BI.inherit(BI.Widget, {
    _const: {
        FACE_MARGIN: 4,
        FACE_MARGIN_2: 4 * 2,
        FACE_SIZE_MIN: 30,
        KEYBOARD_SCROLL_AMOUNT: 40
    },
    _defaultConfig: function () {
        return BI.extend(BI.GridTableScrollbar.superclass._defaultConfig.apply(this, arguments), {
            baseCls: "scrollbar-layout-main public-scrollbar-main",
            attributes: {
                tabIndex: 0
            },
            contentSize: 0,
            defaultPosition: 0,
            isOpaque: false,
            orientation: "vertical",
            position: 0,
            size: 0
        })
    },

    _init: function () {
        BI.GridTableScrollbar.superclass._init.apply(this, arguments);
        var self = this, o = this.options;
        this.focused = false;
        this.isDragging = false;
        this.face = BI.createWidget({
            type: "bi.layout",
            cls: "scrollbar-layout-face public-scrollbar-face "
            + (this._isHorizontal() ? "scrollbar-layout-face-horizontal" : "scrollbar-layout-face-vertical")
        });
        this.contextLayout = BI.createWidget({
            type: "bi.absolute",
            element: this,
            items: [{
                el: this.face,
                left: 0,
                top: 0
            }]
        });
        var onWheel = o.orientation === 'horizontal' ? this._onWheelX : this._onWheelY;
        this._wheelHandler = new BI.WheelHandler(
            BI.bind(onWheel, this),
            BI.bind(this._shouldHandleX, this),
            BI.bind(this._shouldHandleY, this)
        );
        this._mouseMoveTracker = new BI.MouseMoveTracker(
            BI.bind(this._onMouseMove, this),
            BI.bind(this._onMouseMoveEnd, this),
            document
        );
        this.element.on("mousedown", BI.bind(this._onMouseDown, this));
        this.element.on("mousewheel", function (e) {
            self._wheelHandler.onWheel(e.originalEvent);
        });
        this.element.on("keydown", BI.bind(this._onKeyDown, this));
        this.element.on("focus", function () {
            self.focused = true;
            self._populate();
        });
        this.element.on("blur", function () {
            self.focused = false;
            self._populate();
        });
        if (this._isHorizontal()) {
            this.element.addClass("scrollbar-layout-main-horizontal");
        } else {
            this.element.addClass("scrollbar-layout-main-vertical");
        }
        this._populate();
    },

    _isHorizontal: function () {
        return this.options.orientation === 'horizontal'
    },

    _getScale: function () {
        var o = this.options;
        var scale = o.size / o.contentSize;
        var faceSize = o.size * scale;

        if (faceSize < this._const.FACE_SIZE_MIN) {
            scale = (o.size - this._const.FACE_SIZE_MIN) / (o.contentSize - o.size);
        }
        return scale;
    },

    _getFaceSize: function () {
        var o = this.options;
        var scale = o.size / o.contentSize;
        var faceSize = o.size * scale;

        if (faceSize < this._const.FACE_SIZE_MIN) {
            faceSize = this._const.FACE_SIZE_MIN;
        }
        return faceSize;
    },

    _shouldHandleX: function (delta) {
        return this.options.orientation === 'horizontal' ?
            this._shouldHandleChange(delta) :
            false;
    },

    _shouldHandleY: function (delta) {
        return this.options.orientation !== 'horizontal' ?
            this._shouldHandleChange(delta) :
            false;
    },

    _shouldHandleChange: function (delta) {
        return this.options.position + delta !== this.options.position;
    },

    _onWheelY: function (deltaX, deltaY) {
        this._onWheel(deltaY);
    },

    _onWheelX: function (deltaX, deltaY) {
        this._onWheel(deltaX);
    },

    _onWheel: function (delta) {
        var maxPosition = this.options.contentSize - this.options.size;
        this.options.position += delta;
        if (this.options.position < 0) {
            this.options.position = 0;
        } else if (this.options.position > maxPosition) {
            this.options.position = maxPosition;
        }
        this._populate();
        this.fireEvent(BI.GridTableScrollbar.EVENT_SCROLL, this.options.position);
    },

    _onMouseDown: function (e) {
        if (e.target !== this.face.element[0]) {
            var position = this._isHorizontal() ? e.offsetX : e.offsetY;
            position /= this._getScale();
            this.options.position = BI.clamp(position - (this._getFaceSize() * 0.5 / this._getScale()), 0, this.options.contentSize - this.options.size);
            this._populate();
            this.fireEvent(BI.GridTableScrollbar.EVENT_SCROLL, this.options.position);
        } else {
            this._mouseMoveTracker.captureMouseMoves(e);
        }
        this.element[0].focus();
    },

    _onMouseMove: function (deltaX, deltaY) {
        var delta = this._isHorizontal() ? deltaX : deltaY;
        delta /= this._getScale();
        this.options.position = BI.clamp(this.options.position + delta, 0, this.options.contentSize - this.options.size);
        this.isDragging = this._mouseMoveTracker.isDragging();
        this._populate();
        this.fireEvent(BI.GridTableScrollbar.EVENT_SCROLL, this.options.position);
    },

    _onMouseMoveEnd: function (event) {
        this._mouseMoveTracker.releaseMouseMoves();
        if (this.isDragging === true) {
            this.isDragging = false;
            this._populate();
        }
    },

    _onKeyDown: function (event) {
        var Keys = {
            BACKSPACE: 8,
            TAB: 9,
            RETURN: 13,
            ALT: 18,
            ESC: 27,
            SPACE: 32,
            PAGE_UP: 33,
            PAGE_DOWN: 34,
            END: 35,
            HOME: 36,
            LEFT: 37,
            UP: 38,
            RIGHT: 39,
            DOWN: 40,
            DELETE: 46,
            COMMA: 188,
            PERIOD: 190,
            A: 65,
            Z: 90,
            ZERO: 48,
            NUMPAD_0: 96,
            NUMPAD_9: 105
        };
        var keyCode = event.keyCode;

        if (keyCode === Keys.TAB) {
            return;
        }

        var distance = 40;
        var direction = 0;

        if (this._isHorizontal()) {
            switch (keyCode) {
                case Keys.HOME:
                    direction = -1;
                    distance = this.options.contentSize;
                    break;

                case Keys.LEFT:
                    direction = -1;
                    break;

                case Keys.RIGHT:
                    direction = 1;
                    break;

                default:
                    return;
            }
        }

        if (!this._isHorizontal()) {
            switch (keyCode) {
                case Keys.SPACE:
                    if (event.shiftKey) {
                        direction = -1;
                    } else {
                        direction = 1;
                    }
                    break;

                case Keys.HOME:
                    direction = -1;
                    distance = this.options.contentSize;
                    break;

                case Keys.UP:
                    direction = -1;
                    break;

                case Keys.DOWN:
                    direction = 1;
                    break;

                case Keys.PAGE_UP:
                    direction = -1;
                    distance = this.options.size;
                    break;

                case Keys.PAGE_DOWN:
                    direction = 1;
                    distance = this.options.size;
                    break;

                default:
                    return;
            }
        }

        this.options.position = BI.clamp(this.options.position + (distance * direction), 0, this.options.contentSize - this.options.size);
        event.preventDefault();
        this._populate();
        this.fireEvent(BI.GridTableScrollbar.EVENT_SCROLL, this.options.position);
    },

    _populate: function () {
        var self = this, o = this.options;
        if (o.size < 1 || o.contentSize <= o.size) {
            this.setVisible(false);
            return;
        }
        this.setVisible(true);

        var size = o.size;
        var isHorizontal = this._isHorizontal();
        var isActive = this.focused || this.isDragging;

        var faceSize = this._getFaceSize();
        var isOpaque = o.isOpaque;
        this.element[isOpaque === true ? "addClass" : "removeClass"]("public-scrollbar-main-opaque");
        this.element[isActive === true ? "addClass" : "removeClass"]("public-scrollbar-main-active");

        this.face.element[isActive === true ? "addClass" : "removeClass"]("public-scrollbar-face-active");

        var position = o.position * this._getScale() + this._const.FACE_MARGIN;

        var items = this.contextLayout.attr("items");
        if (isHorizontal) {
            this.setWidth(size);
            this.face.setWidth(faceSize - this._const.FACE_MARGIN_2);
            items[0].left = position;
            items[0].top = 0;
        } else {
            this.setHeight(size);
            this.face.setHeight(faceSize - this._const.FACE_MARGIN_2);
            items[0].left = 0;
            items[0].top = position;
        }
        this.contextLayout.attr("items", items);
        this.contextLayout.resize();
    },

    setContentSize: function (contentSize) {
        this.options.contentSize = contentSize;
    },

    setPosition: function (position) {
        this.options.position = position;
    },

    setSize: function (size) {
        this.options.size = size;
    },

    populate: function () {
        this._populate();
    }
});
BI.GridTableScrollbar.SIZE = 10;
BI.GridTableScrollbar.EVENT_SCROLL = "EVENT_SCROLL";
$.shortcut("bi.grid_table_scrollbar", BI.GridTableScrollbar);


BI.GridTableHorizontalScrollbar = BI.inherit(BI.Widget, {
    _const: {
        FACE_MARGIN: 4,
        FACE_MARGIN_2: 4 * 2,
        FACE_SIZE_MIN: 30,
        KEYBOARD_SCROLL_AMOUNT: 40
    },
    _defaultConfig: function () {
        return BI.extend(BI.GridTableHorizontalScrollbar.superclass._defaultConfig.apply(this, arguments), {
            attributes: {
                tabIndex: 0
            },
            contentSize: 0,
            position: 0,
            size: 0
        })
    },

    _init: function () {
        BI.GridTableHorizontalScrollbar.superclass._init.apply(this, arguments);
        var self = this, o = this.options;
        this.scrollbar = BI.createWidget({
            type: "bi.grid_table_scrollbar",
            orientation: "horizontal",
            isOpaque: true,
            position: o.position,
            contentSize: o.contentSize,
            size: o.size
        });
        this.scrollbar.on(BI.GridTableScrollbar.EVENT_SCROLL, function () {
            self.fireEvent(BI.GridTableHorizontalScrollbar.EVENT_SCROLL, arguments);
        });
        BI.createWidget({
            type: "bi.absolute",
            cls: "horizontal-scrollbar",
            element: this,
            width: o.size,
            height: BI.GridTableScrollbar.SIZE,
            items: [{
                el: {
                    type: "bi.absolute",
                    scrollable: false,
                    height: BI.GridTableScrollbar.SIZE,
                    items: [{
                        el: this.scrollbar,
                        left: 0,
                        top: 0
                    }]
                },
                top: 0,
                left: 0,
                right: 0
            }]
        });
    },

    setContentSize: function (contentSize) {
        this.options.contentSize = contentSize;
        this.scrollbar.setContentSize(contentSize);
    },

    setPosition: function (position) {
        this.options.position = position;
        this.scrollbar.setPosition(position);
    },

    setSize: function (size) {
        this.setWidth(size);
        this.options.size = size;
        this.scrollbar.setSize(size);
    },

    populate: function () {
        this.scrollbar.populate();
    }
});
BI.GridTableHorizontalScrollbar.EVENT_SCROLL = "EVENT_SCROLL";
$.shortcut("bi.grid_table_horizontal_scrollbar", BI.GridTableHorizontalScrollbar);/**
 *
 * 表格
 *
 * Created by GUY on 2015/9/22.
 * @class BI.TableHeaderCell
 * @extends BI.Single
 */
BI.TableHeaderCell = BI.inherit(BI.Widget, {
    _defaultConfig: function () {
        return BI.extend(BI.TableHeaderCell.superclass._defaultConfig.apply(this, arguments), {
            baseCls: "bi-table-header-cell",
            text: ""
        })
    },

    _init: function () {
        BI.TableHeaderCell.superclass._init.apply(this, arguments);
        BI.createWidget({
            type: "bi.label",
            element: this,
            textAlign: "center",
            height: this.options.height,
            text: this.options.text,
            value: this.options.value
        })
    }
});

$.shortcut("bi.table_header_cell", BI.TableHeaderCell);/**
 *
 * 表格
 *
 * 能处理静态宽度以及动态宽度的表， 百分比宽度的表请使用PreviewTable
 *
 * Created by GUY on 2015/9/22.
 * @class BI.Table
 * @extends BI.Widget
 */
BI.Table = BI.inherit(BI.Widget, {

    _defaultConfig: function () {
        return BI.extend(BI.Table.superclass._defaultConfig.apply(this, arguments), {
            baseCls: "bi-table",
            logic: { //冻结的页面布局逻辑
                dynamic: false
            },

            isNeedResize: false,//是否需要调整列宽
            isResizeAdapt: true,//是否需要在调整列宽或区域宽度的时候它们自适应变化

            isNeedFreeze: false,//是否需要冻结单元格
            freezeCols: [], //冻结的列号,从0开始,isNeedFreeze为true时生效

            isNeedMerge: false,//是否需要合并单元格
            mergeCols: [], //合并的单元格列号
            mergeRule: function (row1, row2) { //合并规则, 默认相等时合并
                return BI.isEqual(row1, row2);
            },

            columnSize: [],
            headerRowSize: 25,
            footerRowSize: 25,
            rowSize: 25,

            regionColumnSize: false,

            header: [],
            footer: false,
            items: [] //二维数组
        })
    },

    _calculateWidth: function (width) {
        if (!width || width === "0") {
            return "";
        }
        width = BI.parseFloat(width);
        if (width < 0) {
            width = 0;
        }
        return width > 1.01 ? width : (width * 100 + "%");
    },

    _calculateHeight: function (height) {
        return height ? height : "";
    },

    _isRightFreeze: function () {
        return BI.isNotEmptyArray(this.options.freezeCols) && BI.first(this.options.freezeCols) !== 0;
    },

    _createTopLeft: function () {
        var o = this.options, isRight = this._isRightFreeze();
        this.topLeftColGroupTds = {};
        this.topLeftBodyTds = {};
        this.topLeftBodyItems = {};
        var table = this._table();
        var colgroup = this._createColGroup(this.columnLeft, this.topLeftColGroupTds);
        var body = this.topLeftBody = this._body();
        body.element.append(this._createHeaderCells(this.topLeftItems, this.columnLeft, this.mergeLeft, this.topLeftBodyTds, this.topLeftBodyItems));
        BI.createWidget({
            type: "bi.adaptive",
            element: table,
            items: [colgroup, body]
        });
        if (isRight) {
            var w = 0;
            BI.each(o.columnSize, function (i, col) {
                if (!o.freezeCols.contains(i)) {
                    w += col;
                }
            });
            if (BI.isNumeric(w) && w > 1) {
                w = BI.parseFloat(w) + o.columnSize.length - o.freezeCols.length;
            }
        }
        return (this.topLeftContainer = BI.createWidget({
            type: "bi.adaptive",
            width: this._calculateWidth(w),
            items: [table]
        }));
    },

    _createTopRight: function () {
        var o = this.options, isRight = this._isRightFreeze();
        this.topRightColGroupTds = {};
        this.topRightBodyTds = {};
        this.topRightBodyItems = {};
        var table = this._table();
        var colgroup = this._createColGroup(this.columnRight, this.topRightColGroupTds);
        var body = this.topRightBody = this._body();
        body.element.append(this._createHeaderCells(this.topRightItems, this.columnRight, this.mergeRight, this.topRightBodyTds, this.topRightBodyItems, this.columnLeft.length));
        BI.createWidget({
            type: "bi.adaptive",
            element: table,
            items: [colgroup, body]
        });
        if (!isRight) {
            var w = 0;
            BI.each(o.columnSize, function (i, col) {
                if (!o.freezeCols.contains(i)) {
                    w += col;
                }
            });
            if (BI.isNumeric(w)) {
                w = BI.parseFloat(w) + o.columnSize.length - o.freezeCols.length;
            }
        }
        return (this.topRightContainer = BI.createWidget({
            type: "bi.adaptive",
            width: w || undefined,
            items: [table]
        }));
    },

    _createBottomLeft: function () {
        var o = this.options, isRight = this._isRightFreeze();
        this.bottomLeftColGroupTds = {};
        this.bottomLeftBodyTds = {};
        this.bottomLeftBodyItems = {};
        var table = this._table();
        var colgroup = this._createColGroup(this.columnLeft, this.bottomLeftColGroupTds);
        var body = this._createBottomLeftBody();
        BI.createWidget({
            type: "bi.adaptive",
            element: table,
            items: [colgroup, body]
        });
        if (isRight) {
            var w = 0;
            BI.each(o.columnSize, function (i, col) {
                if (!o.freezeCols.contains(i)) {
                    w += col;
                }
            });
            if (BI.isNumeric(w) && w > 1) {
                w = BI.parseFloat(w) + o.columnSize.length - o.freezeCols.length;
            }
        }
        return (this.bottomLeftContainer = BI.createWidget({
            type: "bi.adaptive",
            width: this._calculateWidth(w),
            items: [table]
        }));
    },

    _createBottomLeftBody: function () {
        var body = this.bottomLeftBody = this._body();
        body.element.append(this._createCells(this.bottomLeftItems, this.columnLeft, this.mergeLeft, this.bottomLeftBodyTds, this.bottomLeftBodyItems));
        return body;
    },

    _createBottomRight: function () {
        var o = this.options, isRight = this._isRightFreeze();
        this.bottomRightColGroupTds = {};
        this.bottomRightBodyTds = {};
        this.bottomRightBodyItems = {};
        var table = this._table();
        var colgroup = this._createColGroup(this.columnRight, this.bottomRightColGroupTds);
        var body = this._createBottomRightBody();
        BI.createWidget({
            type: "bi.adaptive",
            element: table,
            items: [colgroup, body]
        });
        if (!isRight) {
            var w = 0;
            BI.each(o.columnSize, function (i, col) {
                if (!o.freezeCols.contains(i)) {
                    w += col;
                }
            });
            if (BI.isNumeric(w) && w > 1) {
                w = BI.parseFloat(w) + o.columnSize.length - o.freezeCols.length;
            }
        }
        return (this.bottomRightContainer = BI.createWidget({
            type: "bi.adaptive",
            width: this._calculateWidth(w),
            items: [table]
        }));
    },

    _createBottomRightBody: function () {
        var body = this.bottomRightBody = this._body();
        body.element.append(this._createCells(this.bottomRightItems, this.columnRight, this.mergeRight, this.bottomRightBodyTds, this.bottomRightBodyItems, this.columnLeft.length));
        return body;
    },

    _createFreezeTable: function () {
        var self = this, o = this.options;
        var isRight = this._isRightFreeze();
        var split = this._split(o.header);
        this.topLeftItems = split.left;
        this.topRightItems = split.right;
        split = this._split(o.items);
        this.bottomLeftItems = split.left;
        this.bottomRightItems = split.right;

        this.columnLeft = [];
        this.columnRight = [];
        BI.each(o.columnSize, function (i, size) {
            if (o.freezeCols.contains(i)) {
                self[isRight ? "columnRight" : "columnLeft"].push(size);
            } else {
                self[isRight ? "columnLeft" : "columnRight"].push(size);
            }
        });
        this.mergeLeft = [];
        this.mergeRight = [];
        BI.each(o.mergeCols, function (i, col) {
            if (o.freezeCols.contains(col)) {
                self[isRight ? "mergeRight" : "mergeLeft"].push(col);
            } else {
                self[isRight ? "mergeLeft" : "mergeRight"].push(col);
            }
        });

        var topLeft = this._createTopLeft();
        var topRight = this._createTopRight();
        var bottomLeft = this._createBottomLeft();
        var bottomRight = this._createBottomRight();

        this.scrollTopLeft = BI.createWidget({
            type: "bi.adaptive",
            cls: "scroll-top-left",
            width: "100%",
            height: "100%",
            scrollable: false,
            items: [topLeft]
        });
        this.scrollTopRight = BI.createWidget({
            type: "bi.adaptive",
            cls: "scroll-top-right",
            width: "100%",
            height: "100%",
            scrollable: false,
            items: [topRight]
        });
        this.scrollBottomLeft = BI.createWidget({
            type: "bi.adaptive",
            cls: "scroll-bottom-left",
            width: "100%",
            height: "100%",
            scrollable: isRight || null,
            scrollx: !isRight,
            items: [bottomLeft]
        });
        this.scrollBottomRight = BI.createWidget({
            type: "bi.adaptive",
            cls: "scroll-bottom-right",
            width: "100%",
            height: "100%",
            scrollable: !isRight || null,
            scrollx: isRight,
            items: [bottomRight]
        });
        this.topLeft = BI.createWidget({
            type: "bi.adaptive",
            cls: "top-left",
            scrollable: false,
            items: [this.scrollTopLeft]
        });
        this.topRight = BI.createWidget({
            type: "bi.adaptive",
            cls: "top-right",
            scrollable: false,
            items: [this.scrollTopRight]
        });
        this.bottomLeft = BI.createWidget({
            type: "bi.adaptive",
            cls: "bottom-left",
            // scrollable: false,
            items: [this.scrollBottomLeft]
        });
        this.bottomRight = BI.createWidget({
            type: "bi.adaptive",
            cls: "bottom-right",
            scrollable: false,
            items: [this.scrollBottomRight]
        });

        var headerHeight = o.header.length * ((o.headerRowSize || o.rowSize) + 1) + 1;
        var leftWidth = BI.sum(o.freezeCols, function (i, col) {
            return o.columnSize[col] > 1 ? o.columnSize[col] + 1 : o.columnSize[col];
        });

        if (o.isNeedResize) {
            var resizer;
            var createResizer = function (size, position) {
                var rowSize = self.getCalculateRegionRowSize();
                resizer = BI.createWidget({
                    type: "bi.layout",
                    cls: "bi-resizer",
                    width: size.width,
                    height: rowSize[0] + rowSize[1]
                });
                BI.createWidget({
                    type: "bi.absolute",
                    element: "body",
                    items: [{
                        el: resizer,
                        left: position.left,
                        top: position.top - rowSize[0]
                    }]
                });
            };
            var resizeResizer = function (size, position) {
                var rowSize = self.getCalculateRegionRowSize();
                var columnSize = self.getCalculateRegionColumnSize();
                var height = rowSize[0] + rowSize[1];
                var sumSize = columnSize[0] + columnSize[1];
                if (size.width > sumSize / 5 * 4) {
                    size.width = sumSize / 5 * 4;
                }
                if (size.width < 10) {
                    size.width = 10;
                }
                resizer.element.css({
                    "left": position.left + "px",
                    "width": size.width + "px",
                    "height": height + "px"
                });
            };
            var stopResizer = function () {
                resizer && resizer.destroy();
                resizer = null;
            };
            var handle;
            if (o.freezeCols.length > 0 && o.freezeCols.length < o.columnSize.length) {
                if (isRight) {
                    var options = {
                        handles: "w",
                        minWidth: 15,
                        helper: "clone",
                        start: function (event, ui) {
                            createResizer(ui.size, ui.position);
                            self.fireEvent(BI.Table.EVENT_TABLE_BEFORE_REGION_RESIZE);
                        },
                        resize: function (e, ui) {
                            resizeResizer(ui.size, ui.position);
                            self.fireEvent(BI.Table.EVENT_TABLE_REGION_RESIZE);
                            e.stopPropagation();
                            //return false;
                        },
                        stop: function (e, ui) {
                            stopResizer();
                            if (o.isResizeAdapt) {
                                var increment = ui.size.width - (BI.sum(self.columnRight) + self.columnRight.length);
                                o.columnSize[self.columnLeft.length] += increment;
                            } else {
                                self.setRegionColumnSize(["fill", ui.size.width]);
                            }
                            self._resize();
                            ui.element.css("left", "");
                            self.fireEvent(BI.Table.EVENT_TABLE_AFTER_REGION_RESIZE);
                        }
                    };
                    self.bottomRight.element.resizable(options);
                    handle = $(".ui-resizable-handle", this.bottomRight.element).css("top", -1 * headerHeight);
                } else {
                    var options = {
                        handles: "e",
                        minWidth: 15,
                        helper: "clone",
                        start: function (event, ui) {
                            createResizer(ui.size, ui.position);
                            self.fireEvent(BI.Table.EVENT_TABLE_BEFORE_REGION_RESIZE);
                        },
                        resize: function (e, ui) {
                            resizeResizer(ui.size, ui.position);
                            self.fireEvent(BI.Table.EVENT_TABLE_REGION_RESIZE);
                            e.stopPropagation();
                            //return false;
                        },
                        stop: function (e, ui) {
                            stopResizer();
                            if (o.isResizeAdapt) {
                                var increment = ui.size.width - (BI.sum(self.columnLeft) + self.columnLeft.length);
                                o.columnSize[self.columnLeft.length - 1] += increment;
                            } else {
                                self.setRegionColumnSize([ui.size.width, "fill"]);
                            }
                            self._resize();
                            self.fireEvent(BI.Table.EVENT_TABLE_AFTER_REGION_RESIZE);
                        }
                    };
                    self.bottomLeft.element.resizable(options);
                    handle = $(".ui-resizable-handle", this.bottomLeft.element).css("top", -1 * headerHeight);
                }
            }
        }
        this._resize = function () {
            if (self.scrollBottomLeft.element.is(":visible")) {
                self.scrollBottomLeft.element.css({"overflow-x": "auto"});
                self.scrollBottomRight.element.css({"overflow-x": "auto"});
                self.setColumnSize(o.columnSize);
                if (isRight) {
                    self.scrollBottomLeft.element.css({"overflow-y": "auto"});
                } else {
                    self.scrollBottomRight.element.css({"overflow-y": "auto"});
                }
                if (self.scrollBottomLeft.element.hasHorizonScroll() || self.scrollBottomRight.element.hasHorizonScroll()) {
                    self.scrollBottomLeft.element.css("overflow-x", "scroll");
                    self.scrollBottomRight.element.css("overflow-x", "scroll");
                }
                if (self.scrollBottomRight.element.hasVerticalScroll()) {
                    self.scrollTopRight.element.css("overflow-y", "scroll");
                } else {
                    self.scrollTopRight.element.css("overflow-y", "hidden");
                }
                if (self.scrollBottomLeft.element.hasVerticalScroll()) {
                    self.scrollTopLeft.element.css("overflow-y", "scroll");
                } else {
                    self.scrollTopLeft.element.css("overflow-y", "hidden");
                }
                self.scrollTopLeft.element[0].scrollLeft = self.scrollBottomLeft.element[0].scrollLeft;
                self.scrollTopRight.element[0].scrollLeft = self.scrollBottomRight.element[0].scrollLeft;
                self.scrollBottomLeft.element[0].scrollTop = self.scrollBottomRight.element[0].scrollTop;
                //调整拖拽handle的高度
                if (o.isNeedResize) {
                    handle && handle.css("height", self.bottomLeft.element.height() + headerHeight);
                }
            }
        };

        var regionColumnSize = o.regionColumnSize;
        if (o.freezeCols.length === 0) {
            regionColumnSize = isRight ? ['fill', 0] : [0, 'fill'];
        } else if (o.freezeCols.length >= o.columnSize.length) {
            regionColumnSize = isRight ? [0, 'fill'] : ['fill', 0];
        }
        this.partitions = BI.createWidget(BI.extend({
            element: this
        }, BI.LogicFactory.createLogic("table", BI.extend({}, o.logic, {
            rows: 2,
            columns: 2,
            columnSize: regionColumnSize || (isRight ? ['fill', leftWidth] : [leftWidth, 'fill']),
            rowSize: [headerHeight, 'fill'],
            items: [[{
                el: this.topLeft
            }, {
                el: this.topRight
            }], [{
                el: this.bottomLeft
            }, {
                el: this.bottomRight
            }]]
        }))));

        //var scrollElement = isRight ? scrollBottomLeft.element : scrollBottomRight.element;
        //var scrollTopElement = isRight ? scrollTopLeft.element : scrollTopRight.element;
        //var otherElement = isRight ? scrollBottomRight.element : scrollBottomLeft.element;

        this._initFreezeScroll();
        BI.nextTick(function () {
            if (self.element.is(":visible")) {
                self._resize();
                self.fireEvent(BI.Table.EVENT_TABLE_AFTER_INIT);
            }
        });
        BI.Resizers.add(this.getName(), function (e) {
            if (BI.isWindow(e.target) && self.element.is(":visible")) {
                self._resize();
                self.fireEvent(BI.Table.EVENT_TABLE_RESIZE);
            }
        });
    },

    _initFreezeScroll: function () {
        var self = this, o = this.options;
        scroll(this.scrollBottomRight.element, this.scrollTopRight.element, this.scrollBottomLeft.element);
        scroll(this.scrollBottomLeft.element, this.scrollTopLeft.element, this.scrollBottomRight.element);

        function scroll(scrollElement, scrollTopElement, otherElement) {
            var scrolling, scrollingX;
            var fn = function (event, delta, deltaX, deltaY) {
                var inf = self._getScrollOffsetAndDur(event);
                if (deltaY < 0 || deltaY > 0) {
                    if (scrolling) {
                        scrollElement[0].scrollTop = scrolling;
                    }
                    scrolling = scrollElement[0].scrollTop - delta * inf.offset;
                    var stopPropagation = false;
                    var st = scrollElement[0].scrollTop;
                    scrollElement[0].scrollTop = scrolling;
                    if (scrollElement[0].scrollTop !== st) {
                        stopPropagation = true;
                    }
                    scrollElement[0].scrollTop = st;
                    self._animateScrollTo(scrollElement, scrollElement[0].scrollTop, scrolling, inf.dur, "linear", {
                        onStart: function () {
                        },
                        onUpdate: function (top) {
                            otherElement[0].scrollTop = top;
                            self.fireEvent(BI.Table.EVENT_TABLE_SCROLL, top);
                        },
                        onComplete: function () {
                            self.fireEvent(BI.Table.EVENT_TABLE_SCROLL, scrolling);
                            scrolling = null;
                        }
                    });


                    //otherElement[0].scrollTop = scrollTop;
                    //scrollElement[0].scrollTop = scrollTop;
                    //self.fireEvent(BI.Table.EVENT_TABLE_SCROLL, scrollTop);
                    if (stopPropagation === true) {
                        event.stopPropagation();
                        return false;
                    }
                    return;
                }
                //if (deltaX < 0 || deltaX > 0) {
                //    if (scrollingX) {
                //        scrollElement[0].scrollLeft = scrollingX;
                //    }
                //    scrollingX = scrollElement[0].scrollLeft + delta * inf.offset;
                //    var stopPropagation = false;
                //    var sl = scrollElement[0].scrollLeft;
                //    scrollElement[0].scrollLeft = scrollingX;
                //    if (scrollElement[0].scrollLeft !== sl) {
                //        stopPropagation = true;
                //    }
                //    scrollElement[0].scrollLeft = sl;
                //    self._animateScrollTo(scrollElement, scrollElement[0].scrollLeft, scrollingX, inf.dur, "linear", {
                //        direction: "left",
                //        onStart: function () {
                //        },
                //        onUpdate: function (left) {
                //            scrollTopElement[0].scrollLeft = left;
                //            self.fireEvent(BI.Table.EVENT_TABLE_SCROLL, null, left);
                //        },
                //        onComplete: function () {
                //            self.fireEvent(BI.Table.EVENT_TABLE_SCROLL, null, scrollingX);
                //            scrollingX = null;
                //        }
                //    });
                //
                //
                //    //otherElement[0].scrollTop = scrollTop;
                //    //scrollElement[0].scrollTop = scrollTop;
                //    //self.fireEvent(BI.Table.EVENT_TABLE_SCROLL, scrollTop);
                //    if (stopPropagation === true) {
                //        event.stopPropagation();
                //        return false;
                //    }
                //}
            };
            scrollElement.mousewheel(fn);
            var scrollTop = 0, scrollLeft = 0;
            scrollElement.scroll(function (e) {
                var change = false;
                if (scrollElement.scrollTop() != scrollTop) {
                    var old = otherElement.scrollTop();
                    otherElement.scrollTop(scrollElement.scrollTop());
                    scrollTop = scrollElement.scrollTop();
                    if (Math.abs(old - otherElement[0].scrollTop) > 0.1) {
                        e.stopPropagation();
                        change = true;
                    }
                }
                if (scrollElement.scrollLeft() != scrollLeft) {
                    var old = scrollTopElement.scrollLeft();
                    scrollTopElement.scrollLeft(scrollElement.scrollLeft());
                    scrollLeft = scrollElement.scrollLeft();
                    if (Math.abs(old - scrollTopElement[0].scrollLeft) > 0.1) {
                        e.stopPropagation();
                        change = true;
                    }
                }
                // self.fireEvent(BI.Table.EVENT_TABLE_SCROLL);
                if (change === true) {
                    e.stopPropagation();
                    //return false;
                }
            });
        }
    },

    _animateScrollTo: function (el, from, to, duration, easing, op) {
        var self = this;
        var onStart = op.onStart, onComplete = op.onComplete, onUpdate = op.onUpdate;
        var startTime = BI.getTime(), _delay, progress = 0, _request;
        _cancelTween();
        _startTween();
        var diff = to - from;
        el._stop = 0;
        function _step() {
            if (el._stop) {
                return;
            }
            if (!progress) {
                onStart.call();
            }
            progress = BI.getTime() - startTime;
            _tween();
            if (progress >= el.time) {
                el.time = (progress > el.time) ? progress + _delay - (progress - el.time) : progress + _delay - 1;
                if (el.time < progress + 1) {
                    el.time = progress + 1;
                }
            }
            if (el.time < duration) {
                el._id = _request(_step);
            } else {
                el[op.direction == 'left' ? "scrollLeft" : "scrollTop"](to);
                onComplete.call();
            }
        }

        function _tween() {
            var top = to;
            if (duration > 0) {
                el.currVal = _ease(el.time, from, diff, duration, easing);
                el[op.direction == 'left' ? "scrollLeft" : "scrollTop"](top = Math.round(el.currVal));
            } else {
                el[op.direction == 'left' ? "scrollLeft" : "scrollTop"](to);
            }
            onUpdate(top);
        }

        function _startTween() {
            _delay = 1000 / 60;
            el.time = progress + _delay;
            _request = (!requestAnimationFrame()) ? function (f) {
                _tween();
                return setTimeout(f, 0.01);
            } : requestAnimationFrame();
            el._id = _request(_step);
        }

        function requestAnimationFrame() {
            return window.requestAnimationFrame ||
                window.webkitRequestAnimationFrame ||
                window.mozRequestAnimationFrame ||
                window.msRequestAnimationFrame ||
                window.oRequestAnimationFrame;
        }

        function cancelAnimationFrame() {
            return window.cancelAnimationFrame ||
                window.webkitCancelAnimationFrame ||
                window.mozCancelAnimationFrame ||
                window.msCancelAnimationFrame ||
                window.oCancelAnimationFrame ||
                window.cancelRequestAnimationFrame ||
                window.webkitCancelRequestAnimationFrame ||
                window.mozCancelRequestAnimationFrame ||
                window.msCancelRequestAnimationFrame ||
                window.oCancelRequestAnimationFrame
        }

        function _cancelTween() {
            if (el._id == null) {
                return;
            }
            if (!cancelAnimationFrame()) {
                clearTimeout(el._id);
            } else {
                cancelAnimationFrame()(el._id);
            }
            el._id = null;
        }

        function _ease(t, b, c, d, type) {
            switch (type) {
                case "linear":
                    return c * t / d + b;
                    break;
                case "mcsLinearOut":
                    t /= d;
                    t--;
                    return c * Math.sqrt(1 - t * t) + b;
                    break;
                case "easeInOutSmooth":
                    t /= d / 2;
                    if (t < 1) {
                        return c / 2 * t * t + b;
                    }
                    t--;
                    return -c / 2 * (t * (t - 2) - 1) + b;
                    break;
                case "easeInOutStrong":
                    t /= d / 2;
                    if (t < 1) {
                        return c / 2 * Math.pow(2, 10 * (t - 1)) + b;
                    }
                    t--;
                    return c / 2 * ( -Math.pow(2, -10 * t) + 2 ) + b;
                    break;
                case "easeInOut":
                case "mcsEaseInOut":
                    t /= d / 2;
                    if (t < 1) {
                        return c / 2 * t * t * t + b;
                    }
                    t -= 2;
                    return c / 2 * (t * t * t + 2) + b;
                    break;
                case "easeOutSmooth":
                    t /= d;
                    t--;
                    return -c * (t * t * t * t - 1) + b;
                    break;
                case "easeOutStrong":
                    return c * ( -Math.pow(2, -10 * t / d) + 1 ) + b;
                    break;
                case "easeOut":
                case "mcsEaseOut":
                default:
                    var ts = (t /= d) * t, tc = ts * t;
                    return b + c * (0.499999999999997 * tc * ts + -2.5 * ts * ts + 5.5 * tc + -6.5 * ts + 4 * t);
            }
        }
    },

    _getScrollOffsetAndDur: function (event) {
        var offset = 40, dur = 200;
        if (event.originalEvent.wheelDelta) {
            offset = Math.abs(event.originalEvent.wheelDelta);
        }
        if (event.deltaFactor < 2) {
            offset = 3;
            dur = 17;
        }
        return {
            offset: offset,
            dur: dur
        };
    },

    resize: function () {
        this._resize();
    },

    _createCells: function (items, columnSize, mergeCols, TDs, Ws, start, rowSize) {
        var self = this, o = this.options, preCol = {}, preRow = {}, preRW = {}, preCW = {}, map = {};
        columnSize = columnSize || o.columnSize;
        mergeCols = mergeCols || o.mergeCols;
        TDs = TDs || {};
        Ws = Ws || {};
        start = start || 0;
        rowSize || (rowSize = o.rowSize);
        var frag = document.createDocumentFragment();
        BI.each(items, function (i, rows) {
            var tr = $("<tr>").addClass((i & 1) === 0 ? "odd" : "even");
            BI.each(rows, function (j, row) {
                if (!map[i]) {
                    map[i] = {};
                }
                if (!TDs[i]) {
                    TDs[i] = {};
                }
                if (!Ws[i]) {
                    Ws[i] = {};
                }
                map[i][j] = row;

                if (o.isNeedMerge && mergeCols.contains(j)) {
                    if (i === 0 && j === 0) {
                        createOneEl(0, 0);
                    } else if (j === 0 && i > 0) {
                        var isNeedMergeRow = o.mergeRule(map[i][j], map[i - 1][j]);
                        if (isNeedMergeRow === true) {
                            mergeRow(i, j);
                            preRow[i] = preCol[j];
                            preRW[i] = preCW[j];
                        } else {
                            createOneEl(i, j);
                        }
                    } else if (i === 0 && j > 0) {
                        var isNeedMergeCol = o.mergeRule(map[i][j], map[i][j - 1]);
                        if (isNeedMergeCol === true) {
                            mergeCol(i, j);
                            preCol[j] = preRow[j - 1];
                            preCW[j] = preRW[j - 1];
                        } else {
                            createOneEl(i, j);
                        }
                    } else {
                        var isNeedMergeRow = o.mergeRule(map[i][j], map[i - 1][j]);
                        var isNeedMergeCol = o.mergeRule(map[i][j], map[i][j - 1]);
                        if (isNeedMergeCol && isNeedMergeRow) {
                            return;
                        }
                        if (isNeedMergeCol) {
                            mergeCol(i, j);
                        }
                        if (isNeedMergeRow) {
                            mergeRow(i, j);
                        }
                        if (!isNeedMergeCol && !isNeedMergeRow) {
                            createOneEl(i, j);
                        }
                    }
                } else {
                    createOneEl(i, j);
                }
            });
            function mergeRow(i, j) {
                var height = (preCol[j].attr("height") | 0) + rowSize + 1;
                preCol[j].attr("height", height).css("height", height);
                //preCW[j].element.css("height", height);
                var rowspan = ((preCol[j].attr("rowspan") || 1) | 0) + 1;
                preCol[j].attr("rowspan", rowspan);
                preCol[j].__mergeRows.pushDistinct(i);
                TDs[i][j] = preCol[j];
                Ws[i][j] = preCW[j];
            }

            function mergeCol(i, j) {
                if (columnSize[j]) {
                    var width = preRow[i].attr("width") | 0;
                    if (width > 1.05 && columnSize[j]) {
                        width = width + columnSize[j] + 1;
                        if (j === columnSize.length - 1) {
                            width--;
                        }
                    } else {
                        width = width + columnSize[j]
                    }
                    width = self._calculateWidth(width);
                    preRow[i].attr("width", width).css("width", width);
                    preRW[i].element.width(width);
                }
                var colspan = ((preRow[i].attr("colspan") || 1) | 0) + 1;
                preRow[i].attr("colspan", colspan);
                preRow[i].__mergeCols.pushDistinct(j);
                TDs[i][j] = preRow[i];
                Ws[i][j] = preRW[i];
            }

            function createOneEl(r, c) {
                var width = self._calculateWidth(columnSize[c]);
                if (width > 1.05 && c === columnSize.length - 1) {
                    width--;
                }
                var height = self._calculateHeight(rowSize);
                var td = $("<td>").attr("height", height)
                    .attr("width", width).css({"width": width, "height": height, "position": "relative"})
                    .addClass((c & 1) === 0 ? "odd-col" : "even-col")
                    .addClass(r === 0 ? "first-row" : "")
                    .addClass(c === 0 ? "first-col" : "")
                    .addClass(c === rows.length - 1 ? "last-col" : "");
                var w = BI.createWidget(map[r][c], {
                    type: "bi.table_cell",
                    textAlign: "left",
                    width: BI.isNumeric(width) ? width : "",
                    height: BI.isNumeric(height) ? height : "",
                    _row: r,
                    _col: c + start
                });
                w.element.css("position", "relative");
                td.append(w.element);
                tr.append(td);
                preCol[c] = td;
                preCol[c].__mergeRows = [r];
                preCW[c] = w;
                preRow[r] = td;
                preRow[r].__mergeCols = [c];
                preRW[r] = w;
                TDs[r][c] = td;
                Ws[r][c] = w;
            }

            frag.appendChild(tr[0]);
        });
        return frag;
    },

    _createColGroupCells: function (columnSize, store) {
        var self = this, o = this.options;
        columnSize = columnSize || o.columnSize;
        store = store || {};
        var frag = document.createDocumentFragment();
        BI.each(columnSize, function (i, size) {
            var width = self._calculateWidth(size);
            var col = $("<col>").attr("width", width).css("width", width);
            store[i] = col;
            frag.appendChild(col[0]);
        });
        return frag;
    },

    _createHeaderCells: function (items, columnSize, mergeCols, TDs, Ws, start) {
        var self = this, o = this.options;
        start || (start = 0);
        var frag = this._createCells(items, columnSize, BI.range(o.columnSize.length), TDs, Ws, start, o.headerRowSize || o.rowSize);

        if (o.isNeedResize === true) {
            var tds = TDs[BI.size(TDs) - 1];
            BI.each(tds, function (j, td) {
                j = j | 0;
                var resizer;
                var getHeight = function (size, position) {
                    var rowSize = self.getCalculateRegionRowSize();
                    if (o.isNeedFreeze === true) {
                        var tableHeight = self.bottomRightContainer.element.outerHeight();
                        return size.height + Math.min(rowSize[1], tableHeight);
                    } else {
                        var tableHeight = self.tableContainer.element.outerHeight();
                        var offset = self.tableContainer.element.offset();
                        var offsetTop = position.top - offset.top;
                        var height = tableHeight - offsetTop;
                        height = Math.min(height, rowSize[0] - offsetTop);
                        return height;
                    }
                };
                if (j < BI.size(tds) - 1) {
                    td.resizable({
                        handles: "e",
                        minWidth: 15,
                        helper: "clone",
                        start: function (event, ui) {
                            var height = getHeight(ui.size, ui.position);
                            resizer = BI.createWidget({
                                type: "bi.layout",
                                cls: "bi-resizer",
                                width: ui.size.width,
                                height: height
                            });

                            BI.createWidget({
                                type: "bi.absolute",
                                element: "body",
                                items: [{
                                    el: resizer,
                                    left: ui.position.left,
                                    top: ui.position.top
                                }]
                            });
                            self.fireEvent(BI.Table.EVENT_TABLE_BEFORE_COLUMN_RESIZE);
                        },
                        resize: function (e, ui) {
                            var height = getHeight(ui.size, ui.position);
                            resizer.element.css({"width": ui.size.width + "px", "height": height + "px"});
                            //o.columnSize[start + j] = ui.size.width;
                            //self.setColumnSize(o.columnSize);
                            self.fireEvent(BI.Table.EVENT_TABLE_COLUMN_RESIZE);
                            e.stopPropagation();
                            //return false;
                        },
                        stop: function (e, ui) {
                            resizer.destroy();
                            resizer = null;
                            o.columnSize[start + j] = ui.size.width - 1;
                            self.setColumnSize(o.columnSize);
                            self.fireEvent(BI.Table.EVENT_TABLE_AFTER_COLUMN_RESIZE);
                        }
                    })
                }
            })
        }
        return frag;
    },

    _createFooterCells: function (items, columnSize, TDs, Ws) {
        var o = this.options;
        var frag = this._createCells(items, columnSize, [], TDs, Ws, 0);
        return frag;
    },

    _createColGroup: function (columnSize, store, widgets) {
        var self = this, o = this.options;
        this.colgroup = this._colgroup();
        this.colgroup.element.append(this._createColGroupCells(columnSize, store, widgets));
        return this.colgroup;
    },

    _createHeader: function () {
        var self = this, o = this.options;
        if (o.header === false) {
            return;
        }
        this.header = this._header();
        this.header.element.append(this._createHeaderCells(o.header, null, null, this.headerTds, this.headerItems));
        return this.header;
    },

    _createFooter: function (columnSize, store, widgets) {
        var self = this, o = this.options;
        if (o.footer === false) {
            return;
        }
        this.footer = this._footer();
        this.footer.element.append(this._createFooterCells(o.footer, null, this.footerTds, this.footerItems));
        return this.footer;
    },

    _createBody: function () {
        var self = this, o = this.options;
        this.body = this._body();
        this.body.element.append(this._createCells(o.items, null, null, this.bodyTds, this.bodyItems));
        return this.body;
    },

    _createNormalTable: function () {
        var self = this, o = this.options, table = this._table();
        this.colgroupTds = {};
        this.headerTds = {};
        this.footerTds = {};
        this.bodyTds = {};

        this.headerItems = {};
        this.footerItems = {};
        this.bodyItems = {};
        var colgroup = this._createColGroup(null, this.colgroupTds);
        var header = this._createHeader();
        var footer = this._createFooter();
        var body = this._createBody();

        BI.createWidget({
            type: "bi.adaptive",
            element: table,
            items: [colgroup, header, footer, body]
        });

        var w = BI.sum(this.options.columnSize) || undefined;
        w = this._calculateWidth(w);
        if (BI.isNumeric(w) && w > 1) {
            w += o.columnSize.length;
        }
        this.tableContainer = BI.createWidget({
            type: "bi.adaptive",
            width: this._calculateWidth(w),
            items: [table]
        });

        this.scrollBottomRight = BI.createWidget({
            type: "bi.adaptive",
            width: "100%",
            height: "100%",
            cls: "scroll-bottom-right",
            scrollable: true,
            items: [this.tableContainer]
        });

        BI.createWidget({
            type: "bi.adaptive",
            cls: "bottom-right",
            element: this,
            scrollable: false,
            items: [this.scrollBottomRight]
        });

        this._resize = function () {
            if (self.element.is(":visible")) {
                self.setColumnSize(o.columnSize);
            }
        };

        this._initNormalScroll();
        BI.Resizers.add(this.getName(), function (e) {
            if (self.element.is(":visible") && BI.isWindow(e.target)) {
                self._resize();
                self.fireEvent(BI.Table.EVENT_TABLE_RESIZE);
            }
        });
        BI.nextTick(function () {
            if (self.element.is(":visible")) {
                self.fireEvent(BI.Table.EVENT_TABLE_AFTER_INIT);
            }
        });
    },

    _initNormalScroll: function () {
        var self = this;
        var scrolling, scrollX;
        this.scrollBottomRight.element.mousewheel(function (event, delta, deltaX, deltaY) {
            var inf = self._getScrollOffsetAndDur(event);
            if (deltaY < 0 || deltaY > 0) {
                var ele = self.scrollBottomRight.element;
                if (scrolling) {
                    ele[0].scrollTop = scrolling;
                }

                scrolling = ele[0].scrollTop - delta * inf.offset;
                var stopPropagation = false;
                var st = ele[0].scrollTop;
                ele[0].scrollTop = scrolling;
                if (ele[0].scrollTop !== st) {
                    stopPropagation = true;
                }
                ele[0].scrollTop = st;
                self._animateScrollTo(ele, ele[0].scrollTop, scrolling, inf.dur, "linear", {
                    onStart: function () {
                    },
                    onUpdate: function (top) {
                        self.fireEvent(BI.Table.EVENT_TABLE_SCROLL, top);
                    },
                    onComplete: function () {
                        self.fireEvent(BI.Table.EVENT_TABLE_SCROLL, scrolling);
                        scrolling = null;
                    }
                });
                //var scrollTop = self.scrollBottomRight.element[0].scrollTop = self.scrollBottomRight.element[0].scrollTop - delta * offset;
                //self.fireEvent(BI.Table.EVENT_TABLE_SCROLL, scrollTop);
                if (stopPropagation === true) {
                    event.stopPropagation();
                    return false;
                }
            }
        });
        var scrollTop = 0, scrollLeft = 0;
        this.scrollBottomRight.element.scroll(function (e) {
            var change = false;
            var scrollElement = self.scrollBottomRight.element;
            if (scrollElement.scrollTop() != scrollTop) {
                if (Math.abs(scrollElement.scrollTop() - scrollTop) > 0.1) {
                    e.stopPropagation();
                    change = true;
                }
                scrollTop = scrollElement.scrollTop();
            }
            if (scrollElement.scrollLeft() != scrollLeft) {
                if (Math.abs(scrollElement.scrollLeft() - scrollLeft) > 0.1) {
                    e.stopPropagation();
                    change = true;
                }
                scrollLeft = scrollElement.scrollLeft();
            }
            self.fireEvent(BI.Table.EVENT_TABLE_SCROLL);
            if (change === true) {
                e.stopPropagation();
                //return false;
            }
            return false;
        });
    },

    _split: function (items) {
        var o = this.options, left = [], right = [], isRight = this._isRightFreeze();
        BI.each(items, function (i, rows) {
            left.push([]);
            right.push([]);
            BI.each(rows, function (j, cell) {
                if (o.freezeCols.contains(j)) {
                    (isRight ? right : left)[i].push(cell);
                } else {
                    (isRight ? left : right)[i].push(cell);
                }
            })
        });
        return {
            left: left,
            right: right
        }
    },

    _table: function () {
        return BI.createWidget({
            type: "bi.layout",
            tagName: "table",
            cls: "table",
            attribute: {"cellspacing": 0, "cellpadding": 0}
        });
    },

    _header: function () {
        return BI.createWidget({
            type: "bi.layout",
            cls: "header",
            tagName: "thead"
        });
    },

    _footer: function () {
        return BI.createWidget({
            type: "bi.layout",
            cls: "footer",
            tagName: "tfoot"
        });
    },

    _body: function () {
        return BI.createWidget({
            type: "bi.layout",
            tagName: "tbody",
            cls: "body"
        });
    },

    _colgroup: function () {
        return BI.createWidget({
            type: "bi.layout",
            tagName: "colgroup"
        });
    },

    _init: function () {
        BI.Table.superclass._init.apply(this, arguments);

        this.populate(this.options.items);
    },

    setColumnSize: function (columnSize) {
        var self = this, o = this.options;
        var isRight = this._isRightFreeze();
        o.columnSize = columnSize || [];
        if (o.isNeedFreeze) {
            var columnLeft = [];
            var columnRight = [];
            BI.each(o.columnSize, function (i, size) {
                if (o.freezeCols.contains(i)) {
                    isRight ? columnRight.push(size) : columnLeft.push(size);
                } else {
                    isRight ? columnLeft.push(size) : columnRight.push(size);
                }
            });
            var topleft = 0, topright = 1, bottomleft = 2, bottomright = 3;
            var run = function (direction) {
                var colgroupTds, bodyTds, bodyItems, sizes;
                switch (direction) {
                    case topleft:
                        colgroupTds = self.topLeftColGroupTds;
                        bodyTds = self.topLeftBodyTds;
                        bodyItems = self.topLeftBodyItems;
                        sizes = columnLeft;
                        break;
                    case topright:
                        colgroupTds = self.topRightColGroupTds;
                        bodyTds = self.topRightBodyTds;
                        bodyItems = self.topRightBodyItems;
                        sizes = columnRight;
                        break;
                    case bottomleft:
                        colgroupTds = self.bottomLeftColGroupTds;
                        bodyTds = self.bottomLeftBodyTds;
                        bodyItems = self.bottomLeftBodyItems;
                        sizes = columnLeft;
                        break;
                    case bottomright:
                        colgroupTds = self.bottomRightColGroupTds;
                        bodyTds = self.bottomRightBodyTds;
                        bodyItems = self.bottomRightBodyItems;
                        sizes = columnRight;
                        break;
                }
                BI.each(colgroupTds, function (i, colgroup) {
                    var width = colgroup.attr("width") | 0;
                    if (width !== sizes[i]) {
                        var w = self._calculateWidth(sizes[i]);
                        colgroup.attr("width", w).css("width", w);
                        BI.each(bodyTds, function (j, items) {
                            if (items[i]) {
                                if (items[i].__mergeCols.length > 1) {
                                    var wid = 0;
                                    BI.each(sizes, function (t, s) {
                                        if (items[i].__mergeCols.contains(t)) {
                                            wid += s;
                                        }
                                    });
                                    wid = self._calculateWidth(wid);
                                    if (wid > 1) {
                                        wid += items[i].__mergeCols.length - 1;
                                    }
                                    if (BI.isNumeric(wid)) {
                                        if (i == BI.size(items) - 1) {
                                            items[i].attr("width", wid - 1).css("width", wid - 1);
                                        } else {
                                            items[i].attr("width", wid).css("width", wid);
                                        }
                                    } else {
                                        items[i].attr("width", "").css("width", "");
                                    }
                                } else {
                                    if (i == BI.size(items) - 1) {
                                        items[i].attr("width", w - 1).css("width", w - 1);
                                    } else {
                                        items[i].attr("width", w).css("width", w);
                                    }
                                }
                            }
                        });
                        BI.each(bodyItems, function (j, items) {
                            if (items[i]) {
                                if (bodyTds[j][i].__mergeCols.length > 1) {
                                    var wid = 0;
                                    BI.each(sizes, function (t, s) {
                                        if (bodyTds[j][i].__mergeCols.contains(t)) {
                                            wid += s;
                                        }
                                    });
                                    wid = self._calculateWidth(wid);
                                    if (wid > 1) {
                                        wid += bodyTds[j][i].__mergeCols.length - 1;
                                    }
                                    if (BI.isNumeric(wid)) {
                                        if (i == BI.size(items) - 1) {
                                            items[i].element.attr("width", wid - 1).css("width", wid - 1);
                                        } else {
                                            items[i].element.attr("width", wid).css("width", wid);
                                        }
                                    } else {
                                        items[i].element.attr("width", "").css("width", "");
                                    }
                                } else {
                                    if (BI.isNumeric(w)) {
                                        if (i == BI.size(items) - 1) {
                                            items[i].element.attr("width", w - 1).css("width", w - 1);
                                        } else {
                                            items[i].element.attr("width", w).css("width", w);
                                        }
                                    } else {
                                        items[i].element.attr("width", "").css("width", "");
                                    }
                                }
                            }
                        });
                    }
                })
            };
            run(topleft);
            run(topright);
            run(bottomleft);
            run(bottomright);

            var lw = 0, rw = 0;
            this.columnLeft = [];
            this.columnRight = [];
            BI.each(o.columnSize, function (i, size) {
                if (o.freezeCols.contains(i)) {
                    lw += size;
                    self[isRight ? "columnRight" : "columnLeft"].push(size);
                } else {
                    rw += size;
                    self[isRight ? "columnLeft" : "columnRight"].push(size);
                }
            });
            lw = this._calculateWidth(lw);
            rw = this._calculateWidth(rw);

            if (BI.isNumeric(lw)) {
                lw = BI.parseFloat(lw) + o.freezeCols.length;
            }
            if (BI.isNumeric(rw)) {
                rw = BI.parseFloat(rw) + o.columnSize.length - o.freezeCols.length;
            }
            this.topLeftContainer.element.width(isRight ? rw : lw);
            this.bottomLeftContainer.element.width(isRight ? rw : lw);
            this.topRightContainer.element.width(isRight ? lw : rw);
            this.bottomRightContainer.element.width(isRight ? lw : rw);
            this.scrollTopLeft.element[0].scrollLeft = this.scrollBottomLeft.element[0].scrollLeft;
            this.scrollTopRight.element[0].scrollLeft = this.scrollBottomRight.element[0].scrollLeft;
            if (o.isNeedResize && o.isResizeAdapt) {
                var leftWidth = BI.sum(o.freezeCols, function (i, col) {
                    return o.columnSize[col] > 1 ? o.columnSize[col] + 1 : o.columnSize[col];
                });
                this.partitions.attr("columnSize", isRight ? ['fill', leftWidth] : [leftWidth, 'fill']);
                this.partitions.resize();
            }
        } else {
            BI.each(this.colgroupTds, function (i, colgroup) {
                var width = colgroup.attr("width") | 0;
                if (width !== o.columnSize[i]) {
                    var w = self._calculateWidth(o.columnSize[i]);
                    colgroup.attr("width", w).css("width", w);
                    BI.each(self.bodyTds, function (j, items) {
                        if (items[i]) {
                            if (items[i].__mergeCols.length > 1) {
                                var wid = 0;
                                BI.each(o.columnSize, function (t, s) {
                                    if (items[i].__mergeCols.contains(t)) {
                                        wid += s;
                                    }
                                });
                                wid = self._calculateWidth(wid);
                                if (wid > 1) {
                                    wid += items[i].__mergeCols.length - 1;
                                }
                                if (BI.isNumeric(wid)) {
                                    if (i == BI.size(items) - 1) {
                                        items[i].attr("width", w - 1).css("width", w - 1);
                                    } else {
                                        items[i].attr("width", w).css("width", w);
                                    }
                                } else {
                                    items[i].attr("width", "").css("width", "");
                                }
                            } else {
                                if (i == BI.size(items) - 1) {
                                    items[i].attr("width", w - 1).css("width", w - 1);
                                } else {
                                    items[i].attr("width", w).css("width", w);
                                }
                            }
                        }
                    });
                    BI.each(self.headerTds, function (j, items) {
                        if (items[i]) {
                            if (items[i].__mergeCols.length > 1) {
                                var wid = 0;
                                BI.each(o.columnSize, function (t, s) {
                                    if (items[i].__mergeCols.contains(t)) {
                                        wid += s;
                                    }
                                });
                                wid = self._calculateWidth(wid);
                                if (wid > 1) {
                                    wid += items[i].__mergeCols.length - 1;
                                }
                                if (BI.isNumeric(wid)) {
                                    if (i == BI.size(items) - 1) {
                                        items[i].attr("width", w - 1).css("width", w - 1);
                                    } else {
                                        items[i].attr("width", w).css("width", w);
                                    }
                                } else {
                                    items[i].attr("width", "").css("width", "");
                                }
                            } else {
                                if (i == BI.size(items) - 1) {
                                    items[i].attr("width", w - 1).css("width", w - 1);
                                } else {
                                    items[i].attr("width", w).css("width", w);
                                }
                            }
                        }
                    });
                    BI.each(self.footerTds, function (j, items) {
                        if (items[i]) {
                            if (items[i].__mergeCols.length > 1) {
                                var wid = 0;
                                BI.each(o.columnSize, function (t, s) {
                                    if (items[i].__mergeCols.contains(t)) {
                                        wid += s;
                                    }
                                });
                                wid = self._calculateWidth(wid);
                                if (wid > 1) {
                                    wid += items[i].__mergeCols.length - 1;
                                }
                                if (BI.isNumeric(wid)) {
                                    if (i == BI.size(items) - 1) {
                                        items[i].attr("width", w - 1).css("width", w - 1);
                                    } else {
                                        items[i].attr("width", w).css("width", w);
                                    }
                                } else {
                                    items[i].attr("width", "").css("width", "");
                                }
                            } else {
                                if (i == BI.size(items) - 1) {
                                    items[i].attr("width", w - 1).css("width", w - 1);
                                } else {
                                    items[i].attr("width", w).css("width", w);
                                }
                            }
                        }
                    });
                    BI.each(self.bodyItems, function (j, items) {
                        if (items[i]) {
                            if (self.bodyTds[j][i].__mergeCols.length > 1) {
                                var wid = 0;
                                BI.each(o.columnSize, function (t, s) {
                                    if (self.bodyTds[j][i].__mergeCols.contains(t)) {
                                        wid += s;
                                    }
                                });
                                wid = self._calculateWidth(wid);
                                if (wid > 1) {
                                    wid += self.bodyTds[j][i].__mergeCols.length - 1;
                                }
                                if (BI.isNumeric(wid)) {
                                    if (i == BI.size(items) - 1) {
                                        items[i].element.attr("width", wid - 1).css("width", wid - 1);
                                    } else {
                                        items[i].element.attr("width", wid).css("width", wid);
                                    }
                                } else {
                                    items[i].element.attr("width", "").css("width", "");
                                }
                            } else {
                                if (BI.isNumeric(w)) {
                                    if (i == BI.size(items) - 1) {
                                        items[i].element.attr("width", w - 1).css("width", w - 1);
                                    } else {
                                        items[i].element.attr("width", w).css("width", w);
                                    }
                                } else {
                                    items[i].element.attr("width", "").css("width", "");
                                }
                            }
                        }
                    });
                    BI.each(self.headerItems, function (j, items) {
                        if (items[i]) {
                            if (self.headerTds[j][i].__mergeCols.length > 1) {
                                var wid = 0;
                                BI.each(o.columnSize, function (t, s) {
                                    if (self.headerTds[j][i].__mergeCols.contains(t)) {
                                        wid += s;
                                    }
                                });
                                wid = self._calculateWidth(wid);
                                if (wid > 1) {
                                    wid += self.headerTds[j][i].__mergeCols.length - 1;
                                }
                                if (BI.isNumeric(wid)) {
                                    if (i == BI.size(items) - 1) {
                                        items[i].element.attr("width", wid - 1).css("width", wid - 1);
                                    } else {
                                        items[i].element.attr("width", wid).css("width", wid);
                                    }
                                } else {
                                    items[i].element.attr("width", "").css("width", "");
                                }
                            } else {
                                if (BI.isNumeric(w)) {
                                    if (i == BI.size(items) - 1) {
                                        items[i].element.attr("width", w - 1).css("width", w - 1);
                                    } else {
                                        items[i].element.attr("width", w).css("width", w);
                                    }
                                } else {
                                    items[i].element.attr("width", "").css("width", "");
                                }
                            }
                        }
                    });
                    BI.each(self.footerItems, function (j, items) {
                        if (items[i]) {
                            if (self.footerTds[j][i].__mergeCols.length > 1) {
                                var wid = 0;
                                BI.each(o.columnSize, function (t, s) {
                                    if (self.footerTds[j][i].__mergeCols.contains(t)) {
                                        wid += s;
                                    }
                                });
                                wid = self._calculateWidth(wid);
                                if (wid > 1) {
                                    wid += self.footerTds[j][i].__mergeCols.length - 1;
                                }
                                if (BI.isNumeric(wid)) {
                                    if (i == BI.size(items) - 1) {
                                        items[i].element.attr("width", wid - 1).css("width", wid - 1);
                                    } else {
                                        items[i].element.attr("width", wid).css("width", wid);
                                    }
                                } else {
                                    items[i].element.attr("width", "").css("width", "");
                                }
                            } else {
                                if (BI.isNumeric(w)) {
                                    if (i == BI.size(items) - 1) {
                                        items[i].element.attr("width", w - 1).css("width", w - 1);
                                    } else {
                                        items[i].element.attr("width", w).css("width", w);
                                    }
                                } else {
                                    items[i].element.attr("width", "").css("width", "");
                                }
                            }
                        }
                    });
                }
            });
            var w = this._calculateWidth(BI.sum(o.columnSize));
            if (w > 1.05) {
                w += o.columnSize.length;
            }
            this.tableContainer.element.width(w);
        }
    },

    getColumnSize: function () {
        return this.options.columnSize;
    },

    getCalculateColumnSize: function () {
        var self = this, o = this.options;
        var columnSize = [];
        if (o.isNeedFreeze === true) {
            if (BI.size(this.bottomLeftBodyTds) > 0 || BI.size(this.bottomRightBodyTds) > 0) {
                if (!BI.any(this.bottomLeftBodyTds, function (i, tds) {
                        if (!BI.any(tds, function (i, item) {
                                if (item.__mergeCols.length > 1) {
                                    return true;
                                }
                            })) {
                            BI.each(tds, function (i, item) {
                                var width = item.width() / item.__mergeCols.length;
                                if (i == BI.size(tds) - 1) {
                                    width++;
                                }
                                columnSize.push(width);
                            });
                            return true;
                        }
                    })) {
                    BI.each(this.bottomLeftBodyTds[0], function (i, item) {
                        var width = item.width() / item.__mergeCols.length;
                        if (i == BI.size(self.bottomLeftBodyTds[0]) - 1) {
                            width++;
                        }
                        columnSize.push(width);
                    });
                }
                if (!BI.any(this.bottomRightBodyTds, function (i, tds) {
                        if (!BI.any(tds, function (i, item) {
                                if (item.__mergeCols.length > 1) {
                                    return true;
                                }
                            })) {
                            BI.each(tds, function (i, item) {
                                var width = item.width() / item.__mergeCols.length;
                                if (i == BI.size(tds) - 1) {
                                    width++;
                                }
                                columnSize.push(width);
                            });
                            return true;
                        }
                    })) {
                    BI.each(this.bottomRightBodyTds[0], function (i, item) {
                        var width = item.width() / item.__mergeCols.length;
                        if (i == BI.size(self.bottomRightBodyTds[0]) - 1) {
                            width++;
                        }
                        columnSize.push(width);
                    });
                }
                return columnSize;
            }
            if (!BI.any(this.topLeftBodyTds, function (i, tds) {
                    if (!BI.any(tds, function (i, item) {
                            if (item.__mergeCols.length > 1) {
                                return true;
                            }
                        })) {
                        BI.each(tds, function (i, item) {
                            var width = item.width() / item.__mergeCols.length;
                            if (i == BI.size(tds) - 1) {
                                width++;
                            }
                            columnSize.push(width);
                        });
                        return true;
                    }
                })) {
                BI.each(this.topLeftBodyTds[BI.size(this.topLeftBodyTds) - 1], function (i, item) {
                    var width = item.width() / item.__mergeCols.length;
                    if (i == BI.size(self.topLeftBodyTds[BI.size(self.topLeftBodyTds) - 1]) - 1) {
                        width++;
                    }
                    columnSize.push(width);
                });
            }
            if (!BI.any(this.topRightBodyTds, function (i, tds) {
                    if (!BI.any(tds, function (i, item) {
                            if (item.__mergeCols.length > 1) {
                                return true;
                            }
                        })) {
                        BI.each(tds, function (i, item) {
                            var width = item.width() / item.__mergeCols.length;
                            if (i == BI.size(tds) - 1) {
                                width++;
                            }
                            columnSize.push(width);
                        });
                        return true;
                    }
                })) {
                BI.each(this.topRightBodyTds[BI.size(this.topRightBodyTds) - 1], function (i, item) {
                    var width = item.width() / item.__mergeCols.length;
                    if (i == BI.size(self.topRightBodyTds[BI.size(self.topRightBodyTds) - 1]) - 1) {
                        width++;
                    }
                    columnSize.push(width);
                });
            }
        } else {
            BI.each(this.headerTds[BI.size(this.headerTds) - 1], function (i, item) {
                var width = item.width() / item.__mergeCols.length;
                if (i == BI.size(self.headerTds[BI.size(self.headerTds) - 1]) - 1) {
                    width++;
                }
                columnSize.push(width);
            });
        }
        return columnSize;
    },

    setHeaderColumnSize: function (columnSize) {
        var self = this, o = this.options;
        var isRight = this._isRightFreeze();
        if (o.isNeedFreeze) {
            var columnLeft = [];
            var columnRight = [];
            BI.each(columnSize, function (i, size) {
                if (o.freezeCols.contains(i)) {
                    isRight ? columnRight.push(size) : columnLeft.push(size);
                } else {
                    isRight ? columnLeft.push(size) : columnRight.push(size);
                }
            });
            var topleft = 0, topright = 1;
            var run = function (direction) {
                var colgroupTds, bodyTds, bodyItems, sizes;
                switch (direction) {
                    case topleft:
                        colgroupTds = self.topLeftColGroupTds;
                        bodyTds = self.topLeftBodyTds;
                        bodyItems = self.topLeftBodyItems;
                        sizes = columnLeft;
                        break;
                    case topright:
                        colgroupTds = self.topRightColGroupTds;
                        bodyTds = self.topRightBodyTds;
                        bodyItems = self.topRightBodyItems;
                        sizes = columnRight;
                        break;
                }
                BI.each(colgroupTds, function (i, colgroup) {
                    var width = colgroup.attr("width") | 0;
                    if (width !== sizes[i]) {
                        var w = self._calculateWidth(sizes[i]);
                        colgroup.attr("width", w).css("width", w);
                        BI.each(bodyTds, function (j, items) {
                            if (items[i]) {
                                if (items[i].__mergeCols.length > 1) {
                                    var wid = 0;
                                    BI.each(sizes, function (t, s) {
                                        if (items[i].__mergeCols.contains(t)) {
                                            wid += s;
                                        }
                                    });
                                    wid = self._calculateWidth(wid);
                                    if (wid > 1) {
                                        wid += items[i].__mergeCols.length - 1;
                                    }
                                    if (BI.isNumeric(wid)) {
                                        if (i == BI.size(items) - 1) {
                                            items[i].attr("width", wid - 1).css("width", wid - 1);
                                        } else {
                                            items[i].attr("width", wid).css("width", wid);
                                        }
                                    } else {
                                        items[i].attr("width", "").css("width", "");
                                    }
                                } else {
                                    if (i == BI.size(items) - 1) {
                                        items[i].attr("width", w - 1).css("width", w - 1);
                                    } else {
                                        items[i].attr("width", w).css("width", w);
                                    }
                                }
                            }
                        });
                        BI.each(bodyItems, function (j, items) {
                            if (items[i]) {
                                if (bodyTds[j][i].__mergeCols.length > 1) {
                                    var wid = 0;
                                    BI.each(sizes, function (t, s) {
                                        if (bodyTds[j][i].__mergeCols.contains(t)) {
                                            wid += s;
                                        }
                                    });
                                    wid = self._calculateWidth(wid);
                                    if (wid > 1) {
                                        wid += bodyTds[j][i].__mergeCols.length - 1;
                                    }
                                    if (BI.isNumeric(wid)) {
                                        if (i == BI.size(items) - 1) {
                                            items[i].element.attr("width", wid - 1).css("width", wid - 1);
                                        } else {
                                            items[i].element.attr("width", wid).css("width", wid);
                                        }
                                    } else {
                                        items[i].element.attr("width", "").css("width", "");
                                    }
                                } else {
                                    if (BI.isNumeric(w)) {
                                        if (i == BI.size(items) - 1) {
                                            items[i].element.attr("width", w - 1).css("width", w - 1);
                                        } else {
                                            items[i].element.attr("width", w).css("width", w);
                                        }
                                    } else {
                                        items[i].element.attr("width", "").css("width", "");
                                    }
                                }
                            }
                        });
                    }
                })
            };
            run(topleft);
            run(topright);

            var lw = 0, rw = 0;
            BI.each(columnSize, function (i, size) {
                if (o.freezeCols.contains(i)) {
                    lw += size;
                } else {
                    rw += size;
                }
            });
            lw = this._calculateWidth(lw);
            rw = this._calculateWidth(rw);

            if (BI.isNumeric(lw)) {
                lw = BI.parseFloat(lw) + o.freezeCols.length;
            }
            if (BI.isNumeric(rw)) {
                rw = BI.parseFloat(rw) + columnSize.length - o.freezeCols.length;
            }
            this.topLeftContainer.element.width(isRight ? rw : lw);
            this.topRightContainer.element.width(isRight ? lw : rw);
            this.scrollTopLeft.element[0].scrollLeft = this.scrollBottomLeft.element[0].scrollLeft;
            this.scrollTopRight.element[0].scrollLeft = this.scrollBottomRight.element[0].scrollLeft;
            if (o.isNeedResize && o.isResizeAdapt) {
                var leftWidth = BI.sum(o.freezeCols, function (i, col) {
                    return columnSize[col] > 1 ? columnSize[col] + 1 : columnSize[col];
                });
                this.partitions.attr("columnSize", isRight ? ['fill', leftWidth] : [leftWidth, 'fill']);
                this.partitions.resize();
            }
        } else {
            BI.each(this.colgroupTds, function (i, colgroup) {
                var width = colgroup.attr("width") | 0;
                if (width !== columnSize[i]) {
                    var w = self._calculateWidth(columnSize[i]);
                    colgroup.attr("width", w).css("width", w);
                    BI.each(self.headerTds, function (j, items) {
                        if (items[i]) {
                            if (items[i].__mergeCols.length > 1) {
                                var wid = 0;
                                BI.each(columnSize, function (t, s) {
                                    if (items[i].__mergeCols.contains(t)) {
                                        wid += s;
                                    }
                                });
                                wid = self._calculateWidth(wid);
                                if (wid > 1) {
                                    wid += items[i].__mergeCols.length - 1;
                                }
                                if (BI.isNumeric(wid)) {
                                    if (i == BI.size(items) - 1) {
                                        items[i].element.attr("width", wid - 1).css("width", wid - 1);
                                    } else {
                                        items[i].element.attr("width", wid).css("width", wid);
                                    }
                                } else {
                                    items[i].attr("width", "").css("width", "");
                                }
                            } else {
                                if (i == BI.size(items) - 1) {
                                    items[i].attr("width", w - 1).css("width", w - 1);
                                } else {
                                    items[i].attr("width", w).css("width", w);
                                }
                            }
                        }
                    });
                    BI.each(self.headerItems, function (j, items) {
                        if (items[i]) {
                            if (self.headerTds[j][i].__mergeCols.length > 1) {
                                var wid = 0;
                                BI.each(columnSize, function (t, s) {
                                    if (self.headerTds[j][i].__mergeCols.contains(t)) {
                                        wid += s;
                                    }
                                });
                                wid = self._calculateWidth(wid);
                                if (wid > 1) {
                                    wid += self.headerTds[j][i].__mergeCols.length - 1;
                                }
                                if (BI.isNumeric(wid)) {
                                    if (i == BI.size(items) - 1) {
                                        items[i].element.attr("width", wid - 1).css("width", wid - 1);
                                    } else {
                                        items[i].element.attr("width", wid).css("width", wid);
                                    }
                                } else {
                                    items[i].element.attr("width", "").css("width", "");
                                }
                            } else {
                                if (BI.isNumeric(w)) {
                                    if (i == BI.size(items) - 1) {
                                        items[i].element.attr("width", w - 1).css("width", w - 1);
                                    } else {
                                        items[i].element.attr("width", w).css("width", w);
                                    }
                                } else {
                                    items[i].element.attr("width", "").css("width", "");
                                }
                            }
                        }
                    });
                }
            });
            var cW = this._calculateWidth(BI.sum(columnSize));
            if (cW > 1.05) {
                cW = cW + columnSize.length;
            }
            this.tableContainer.element.width(cW);
        }
    },

    setRegionColumnSize: function (columnSize) {
        var self = this, o = this.options;
        o.regionColumnSize = columnSize;
        if (o.freezeCols.length === 0) {
            if (o.isNeedFreeze) {
                this.partitions.attr("columnSize", this._isRightFreeze() ? ['fill', 0] : [0, 'fill']);
                this.partitions.resize();
            } else {
                this.tableContainer.element.width(columnSize[0]);
            }
        } else if (o.freezeCols.length > 0 && o.freezeCols.length < o.columnSize.length) {
            if (o.isNeedFreeze) {
                this.partitions.attr("columnSize", columnSize);
                this.partitions.resize();
            } else {
                this.tableContainer.element.width(columnSize[0]);
            }
        } else {
            if (o.isNeedFreeze) {
                this.partitions.attr("columnSize", this._isRightFreeze() ? [0, 'fill'] : ['fill', 0]);
                this.partitions.resize();
            } else {
                this.tableContainer.element.width(columnSize[0]);
            }
        }
    },

    getRegionColumnSize: function () {
        return this.options.regionColumnSize;
    },

    getCalculateRegionColumnSize: function () {
        var o = this.options;
        if (o.isNeedFreeze) {
            return [this.scrollBottomLeft.element.width(), this.scrollBottomRight.element.width()];
        }
        return [this.scrollBottomRight.element.width()];
    },

    getCalculateRegionRowSize: function () {
        var o = this.options;
        if (o.isNeedFreeze) {
            return [this.scrollTopRight.element.height(), this.scrollBottomRight.element.height()];
        }
        return [this.scrollBottomRight.element.height()];
    },

    getClientRegionColumnSize: function () {
        var o = this.options;
        if (o.isNeedFreeze) {
            return [this.scrollBottomLeft.element[0].clientWidth, this.scrollBottomRight.element[0].clientWidth];
        }
        return [this.scrollBottomRight.element[0].clientWidth];
    },

    getClientRegionRowSize: function () {
        var o = this.options;
        if (o.isNeedFreeze) {
            return [this.scrollBottomLeft.element[0].clientHeight, this.scrollBottomRight.element[0].clientHeight];
        }
        return [this.scrollBottomRight.element[0].clientHeight];
    },

    getScrollRegionColumnSize: function () {
        var o = this.options;
        if (o.isNeedFreeze) {
            return [this.scrollBottomLeft.element[0].scrollWidth, this.scrollBottomRight.element[0].scrollWidth];
        }
        return [this.scrollBottomRight.element[0].scrollWidth];
    },

    getScrollRegionRowSize: function () {
        var o = this.options;
        if (o.isNeedFreeze) {
            if (o.freezeCols.length < o.columnSize.length) {
                return [this.scrollTopRight.element[0].scrollHeight, this.scrollBottomRight.element[0].scrollHeight];
            } else {
                return [this.scrollTopLeft.element[0].scrollHeight, this.scrollBottomLeft.element[0].scrollHeight];
            }
        }
        return [this.scrollBottomRight.element[0].scrollHeight];
    },

    hasVerticalScroll: function () {
        var o = this.options;
        if (o.isNeedFreeze) {
            return this.scrollBottomRight.element.hasVerticalScroll() || this.scrollBottomLeft.element.hasVerticalScroll();
        }
        return this.scrollBottomRight.element.hasVerticalScroll();
    },

    setVerticalScroll: function (scrollTop) {
        var o = this.options;
        if (o.isNeedFreeze) {
            if (this.scrollBottomRight.element[0].scrollTop !== scrollTop) {
                this.scrollBottomRight.element[0].scrollTop = scrollTop;
            }
            if (this.scrollBottomLeft.element[0].scrollTop !== scrollTop) {
                this.scrollBottomLeft.element[0].scrollTop = scrollTop;
            }
        } else {
            if (this.scrollBottomRight.element[0].scrollTop !== scrollTop) {
                this.scrollBottomRight.element[0].scrollTop = scrollTop;
            }
        }
    },

    setLeftHorizontalScroll: function (scrollLeft) {
        var o = this.options;
        if (o.isNeedFreeze) {
            if (this.scrollBottomLeft.element[0].scrollLeft !== scrollLeft) {
                this.scrollBottomLeft.element[0].scrollLeft = scrollLeft;
            }
            if (this.scrollTopLeft.element[0].scrollLeft !== scrollLeft) {
                this.scrollTopLeft.element[0].scrollLeft = scrollLeft;
            }
        } else {
            if (this.scrollBottomRight.element[0].scrollLeft !== scrollLeft) {
                this.scrollBottomRight.element[0].scrollLeft = scrollLeft;
            }
        }
    },

    setRightHorizontalScroll: function (scrollLeft) {
        var o = this.options;
        if (o.isNeedFreeze) {
            if (this.scrollBottomRight.element[0].scrollLeft !== scrollLeft) {
                this.scrollBottomRight.element[0].scrollLeft = scrollLeft;
            }
            if (this.scrollTopRight.element[0].scrollLeft !== scrollLeft) {
                this.scrollTopRight.element[0].scrollLeft = scrollLeft;
            }
        } else {
            if (this.scrollBottomRight.element[0].scrollLeft !== scrollLeft) {
                this.scrollBottomRight.element[0].scrollLeft = scrollLeft;
            }
        }
    },

    getVerticalScroll: function () {
        var o = this.options;
        if (o.isNeedFreeze) {
            return this.scrollBottomRight.element[0].scrollTop || this.scrollBottomLeft.element[0].scrollTop;
        }
        return this.scrollBottomRight.element[0].scrollTop;
    },

    getLeftHorizontalScroll: function () {
        var o = this.options;
        if (o.isNeedFreeze) {
            return this.scrollBottomLeft.element[0].scrollLeft;
        }
        return this.scrollBottomRight.element[0].scrollLeft;
    },

    getRightHorizontalScroll: function () {
        var o = this.options;
        if (o.isNeedFreeze) {
            return this.scrollBottomRight.element[0].scrollLeft;
        }
        return this.scrollBottomRight.element[0].scrollLeft;
    },

    getColumns: function () {
        var o = this.options;
        if (o.isNeedFreeze) {
            return {
                topLeft: this.topLeftBodyItems,
                topRight: this.topRightBodyItems,
                bottomLeft: this.bottomLeftBodyItems,
                bottomRight: this.bottomRightBodyItems
            }
        } else {
            return {
                header: this.headerItems,
                body: this.bodyItems,
                footer: this.footerItems
            }
        }
    },

    populate: function (items, header) {
        this.options.items = items || [];
        if (header) {
            this.options.header = header;
        }
        this.empty();
        if (this.options.isNeedFreeze) {
            this._createFreezeTable();
        } else {
            this._createNormalTable();
        }
    },

    empty: function () {
        BI.Resizers.remove(this.getName());
        BI.Table.superclass.empty.apply(this, arguments);
    },

    destroy: function () {
        BI.Table.superclass.destroy.apply(this, arguments);
    }
})
;
BI.Table.EVENT_TABLE_AFTER_INIT = "EVENT_TABLE_AFTER_INIT";
BI.Table.EVENT_TABLE_RESIZE = "EVENT_TABLE_RESIZE";
BI.Table.EVENT_TABLE_SCROLL = "EVENT_TABLE_SCROLL";
BI.Table.EVENT_TABLE_BEFORE_COLUMN_RESIZE = "EVENT_TABLE_BEFORE_COLUMN_RESIZE";
BI.Table.EVENT_TABLE_COLUMN_RESIZE = "EVENT_TABLE_COLUMN_RESIZE";
BI.Table.EVENT_TABLE_AFTER_COLUMN_RESIZE = "EVENT_TABLE_AFTER_COLUMN_RESIZE";

BI.Table.EVENT_TABLE_BEFORE_REGION_RESIZE = "EVENT_TABLE_BEFORE_REGION_RESIZE";
BI.Table.EVENT_TABLE_REGION_RESIZE = "EVENT_TABLE_REGION_RESIZE";
BI.Table.EVENT_TABLE_AFTER_REGION_RESIZE = "EVENT_TABLE_AFTER_REGION_RESIZE";
$.shortcut("bi.table_view", BI.Table);
/**
 *
 * 表格单元格
 *
 * Created by GUY on 2016/1/12.
 * @class BI.ResizableTableCell
 * @extends BI.Widget
 */
BI.ResizableTableCell = BI.inherit(BI.Widget, {
    _defaultConfig: function () {
        return BI.extend(BI.ResizableTableCell.superclass._defaultConfig.apply(this, arguments), {
            baseCls: "bi-resizable-table-cell",
            cell: {},
            start: BI.emptyFn,
            resize: BI.emptyFn,
            stop: BI.emptyFn
        })
    },

    _init: function () {
        BI.ResizableTableCell.superclass._init.apply(this, arguments);
        var self = this, o = this.options;
        this.cell = BI.createWidget(BI.extend({type: "bi.label"}, o.cell, {width: o.width, height: o.height}));

        var startDrag = false;
        var size = 0, offset = 0, defaultSize = o.width;
        var mouseMoveTracker = new BI.MouseMoveTracker(function (deltaX, deltaY) {
            if (mouseMoveTracker.isDragging()) {
                startDrag = true;
                offset += deltaX;
                size = BI.clamp(defaultSize + offset, 15, Number.MAX_VALUE);
                self.handler.element.addClass("dragging");
                o.resize(size);
            }
        }, function () {
            if (startDrag === true) {
                size = BI.clamp(size, 15, Number.MAX_VALUE);
                o.stop(size);
                size = 0;
                offset = 0;
                defaultSize = o.width;
                self.handler.element.removeClass("dragging");
                startDrag = false;
            }
            mouseMoveTracker.releaseMouseMoves();
        }, document);
        this.handler = BI.createWidget({
            type: "bi.absolute",
            cls: "resizable-table-cell-resizer-container",
            width: 6,
            items: [{
                el: {
                    type: "bi.layout",
                    cls: "resizable-table-cell-resizer-knob",
                    width: 4
                },
                right: 0,
                top: 0,
                bottom: 0
            }]
        });
        this.handler.element.on("mousedown", function (event) {
            defaultSize = o.width;
            mouseMoveTracker.captureMouseMoves(event);
        });
        BI.createWidget({
            type: "bi.absolute",
            element: this,
            items: [{
                el: this.cell,
                left: 0,
                right: 0,
                top: 0,
                bottom: 0
            }, {
                el: this.handler,
                right: 0,
                top: 0,
                bottom: 0
            }]
        })
    },

    setWidth: function (width) {
        BI.ResizableTableCell.superclass.setWidth.apply(this, arguments);
        var o = this.options;
        this.cell.setWidth(o.width);
    },

    setHeight: function (height) {
        BI.ResizableTableCell.superclass.setHeight.apply(this, arguments);
        var o = this.options;
        this.cell.setHeight(o.height);
    }
});
$.shortcut("bi.resizable_table_cell", BI.ResizableTableCell);/**
 *
 * 可调整列宽的grid表格
 *
 * Created by GUY on 2016/1/12.
 * @class BI.ResizableTable
 * @extends BI.Widget
 */
BI.ResizableTable = BI.inherit(BI.Widget, {
    _defaultConfig: function () {
        return BI.extend(BI.ResizableTable.superclass._defaultConfig.apply(this, arguments), {
            baseCls: "bi-resizable-table",
            el: {
                type: "bi.grid_table"
            },
            isNeedFreeze: false,
            isNeedResize: true,
            isResizeAdapt: false,
            headerRowSize: 25,
            rowSize: 25,
            isNeedMerge: true,//是否需要合并单元格
            mergeCols: [],
            mergeRule: BI.emptyFn,
            columnSize: [],
            freezeCols: [],
            header: [],
            items: [],
            regionColumnSize: []
        })
    },

    _init: function () {
        BI.ResizableTable.superclass._init.apply(this, arguments);
        var self = this, o = this.options;
        this.resizer = BI.createWidget({
            type: "bi.layout",
            cls: "resizable-table-resizer",
            invisible: true,
            width: 2
        });
        this.regionResizerHandler = this._createResizerHandler();
        this.table = BI.createWidget(o.el, {
            type: "bi.grid_table",
            element: this,
            width: o.width,
            height: o.height,
            headerRowSize: o.headerRowSize,
            rowSize: o.rowSize,
            columnSize: o.columnSize,

            isNeedFreeze: o.isNeedFreeze,
            freezeCols: o.freezeCols,
            isNeedMerge: o.isNeedMerge,
            mergeCols: o.mergeCols,
            mergeRule: BI.bind(this._mergeRule, this),

            header: this._formatHeader(o.header),
            items: o.items,
            regionColumnSize: o.regionColumnSize
        });
        this.table.on(BI.Table.EVENT_TABLE_SCROLL, function () {
            self.fireEvent(BI.Table.EVENT_TABLE_SCROLL, arguments);
        });
        BI.createWidget({
            type: "bi.absolute",
            element: this,
            items: [{
                el: this.regionResizerHandler,
                left: 0,
                top: 0,
                bottom: 0
            }, {
                el: this.resizer,
                left: 0,
                top: 0
            }]
        });
        this._populate();
    },

    _mergeRule: function (row1, row2) {
        var o = this.options;
        if (row1.type === "bi.resizable_table_cell") {
            row1 = row1.cell;
        }
        if (row2.type === "bi.resizable_table_cell") {
            row2 = row2.cell;
        }
        return o.mergeRule(row1, row2);
    },

    _createResizerHandler: function () {
        var self = this, o = this.options;
        var regionResizerHandler = BI.createWidget({
            type: "bi.absolute",
            cls: "resizable-table-region-resizer",
            invisible: true,
            width: 6,
            items: [{
                el: {
                    type: "bi.layout",
                    width: 2,
                    cls: "resizable-table-region-resizer-knob"
                },
                left: 2,
                top: 0,
                bottom: 0
            }]
        });
        var size = 0, offset = 0, defaultSize = 0, start = false;
        var mouseMoveTracker = new BI.MouseMoveTracker(function (deltaX, deltaY) {
            if (mouseMoveTracker.isDragging()) {
                start = true;
                offset += deltaX;
                size = BI.clamp(defaultSize + offset, 15, o.width - 15);

                self.regionResizerHandler.element.addClass("dragging");
                self._setRegionResizerHandlerPosition(size - 3, 0);
            }

        }, function () {
            if (start === true) {
                o.regionColumnSize[0] = BI.clamp(size, 15, o.width - 15);
                self.table.setRegionColumnSize(o.regionColumnSize);
                if (o.isResizeAdapt === true) {
                    var freezeColumnSize = self._getFreezeColumnSize();
                    o.columnSize[self._getFreezeColLength() - 1] += o.regionColumnSize[0] - freezeColumnSize;
                    self.table.setColumnSize(o.columnSize);
                }
                self.table.populate();
                self._populate();
                self.regionResizerHandler.element.removeClass("dragging");
                self.fireEvent(BI.Table.EVENT_TABLE_AFTER_REGION_RESIZE);
                start = false;
            }
            mouseMoveTracker.releaseMouseMoves();
        }, document);
        regionResizerHandler.element.on("mousedown", function (event) {
            defaultSize = size = self._getRegionSize();
            offset = 0;
            self._setResizerPosition(0, 0);
            mouseMoveTracker.captureMouseMoves(event);
        });
        return regionResizerHandler;
    },

    _setResizerPosition: function (left, top) {
        this.resizer.element.css({
            left: left + "px",
            top: top + "px"
        });
    },

    _setRegionResizerHandlerPosition: function (left, top) {
        this.regionResizerHandler.element.css({
            left: left + "px",
            top: top + "px"
        });
    },

    _getRegionSize: function () {
        var o = this.options;
        var regionSize = o.regionColumnSize[0] || 0;
        if (o.isNeedFreeze === false || o.freezeCols.length === 0) {
            return 0;
        }
        if (!regionSize) {
            BI.each(o.freezeCols, function (i, col) {
                regionSize += o.columnSize[col];
            });
        }
        return regionSize;
    },

    _getRegionRowSize: function () {
        var o = this.options;
        return [o.header.length * o.headerRowSize,
            Math.min(o.height - o.header.length * o.headerRowSize, o.items.length * o.rowSize)];
    },

    _getFreezeColLength: function () {
        return this.options.freezeCols.length;
    },

    _getFreezeColumnSize: function () {
        var columnSize = this.options.columnSize;
        var sum = 0;
        for (var i = 0, len = this._getFreezeColLength(); i < len; i++) {
            sum += columnSize[i];
        }
        return sum;
    },

    _getResizerLeft: function (j) {
        var left = 0;
        var columnSize = this.options.columnSize;
        var freezeColLength = this._getFreezeColLength();
        for (var i = (j >= freezeColLength ? freezeColLength : 0); i < j; i++) {
            left += columnSize[i] || 0;
        }
        if (j >= freezeColLength) {
            left += this.table.getRegionSize();
            left -= this.table.getRightHorizontalScroll();
        } else {
            left -= this.table.getLeftHorizontalScroll();
        }
        return left;
    },

    _formatHeader: function (header) {
        var self = this, o = this.options;
        var result = [];
        var resize = function (j, size) {
            self.resizer.setVisible(true);
            var height = o.headerRowSize + self._getRegionRowSize()[1];
            self.resizer.setHeight(height);

            self._setResizerPosition(self._getResizerLeft(j) + size, (o.header.length - 1) * o.headerRowSize);
        };
        var stop = function (j, size) {
            self.resizer.setVisible(false);
            o.columnSize[j] = size;
            self.table.setColumnSize(o.columnSize);
            self.table.populate();
            self._populate();
            self.fireEvent(BI.Table.EVENT_TABLE_AFTER_COLUMN_RESIZE);
        };
        BI.each(header, function (i, cols) {
            if (i === header.length - 1) {
                result[i] = [];
                BI.each(cols, function (j, col) {
                    if (j === self._getFreezeColLength() - 1 || j === cols.length - 1) {
                        result[i][j] = col;
                    } else {
                        result[i][j] = {
                            type: "bi.resizable_table_cell",
                            cell: col,
                            resize: BI.bind(resize, null, j),
                            stop: BI.bind(stop, null, j)
                        };
                        if (o.isNeedMerge) {
                            var r = i;
                            while (r > 0 && self._mergeRule(result[r][j], result[r - 1][j])) {
                                result[r - 1][j] = {
                                    type: "bi.resizable_table_cell",
                                    cell: result[r - 1][j],
                                    resize: BI.bind(resize, null, j),
                                    stop: BI.bind(stop, null, j)
                                };
                                r--;
                            }
                        }
                    }
                });
            } else {
                result.push(cols);
            }
        });
        return result;
    },

    _populate: function () {
        var o = this.options;
        var regionSize = this._getRegionSize();
        if (regionSize > 0) {
            this.regionResizerHandler.setVisible(true);
            this._setRegionResizerHandlerPosition(regionSize - 3, 0);
        } else {
            this.regionResizerHandler.setVisible(false);
        }
    },

    setWidth: function (width) {
        BI.ResizableTable.superclass.setWidth.apply(this, arguments);
        this.table.setWidth(width)
    },

    setHeight: function (height) {
        BI.ResizableTable.superclass.setHeight.apply(this, arguments);
        this.table.setHeight(height);
    },

    setVerticalScroll: function (scrollTop) {
        this.table.setVerticalScroll(scrollTop);
    },

    setLeftHorizontalScroll: function (scrollLeft) {
        this.table.setLeftHorizontalScroll(scrollLeft);
    },

    setRightHorizontalScroll: function (scrollLeft) {
        this.table.setRightHorizontalScroll(scrollLeft);
    },

    setColumnSize: function (columnSize) {
        this.options.columnSize = columnSize;
        this.table.setColumnSize(columnSize);
    },

    getColumnSize: function () {
        return this.table.getColumnSize();
    },

    setRegionColumnSize: function (columnSize) {
        this.options.regionColumnSize = columnSize;
        this.table.setRegionColumnSize(columnSize);
    },

    getRegionColumnSize: function () {
        return this.table.getRegionColumnSize();
    },

    getVerticalScroll: function () {
        return this.table.getVerticalScroll();
    },

    getLeftHorizontalScroll: function () {
        return this.table.getLeftHorizontalScroll();
    },

    getRightHorizontalScroll: function () {
        return this.table.getRightHorizontalScroll();
    },

    attr: function () {
        BI.ResizableTable.superclass.attr.apply(this, arguments);
        this.table.attr.apply(this.table, arguments);
    },

    restore: function () {
        this.table.restore();
    },

    populate: function (items, header) {
        if (items) {
            this.options.items = items;
        }
        if (header) {
            this.options.header = header;
            if (this.options.isNeedResize) {
                header = this._formatHeader(header);
            }
        }
        this.table.populate(items, header);
        this._populate();
    }
});

$.shortcut("bi.resizable_table", BI.ResizableTable);/**
 * 组件请求数据超时提示
 * Created by Young's on 2017/2/4.
 */
BI.TimeoutToast = BI.inherit(BI.Tip, {
    _defaultConfig: function () {
        return BI.extend(BI.TimeoutToast.superclass._defaultConfig.apply(this, arguments), {
            baseCls: "bi-timeout-toast"
        });
    },

    _init: function () {
        BI.TimeoutToast.superclass._init.apply(this, arguments);
        var self = this;
        this.requests = [];
        this.toast = BI.createWidget({
            type: "bi.vertical_adapt",
            element: this,
            items: [{
                type: "bi.label",
                text: BI.i18nText("BI-Request_Time_Out_Toast_Tip")
            }, {
                type: "bi.text_button",
                cls: "cancel-button",
                width: 60,
                height: 22,
                text: BI.i18nText("BI-Basic_Cancel"),
                title: BI.i18nText("BI-Basic_Cancel"),
                handler: function () {
                    self.cancelAllRequests();
                }
            }, {
                type: "bi.text_button",
                cls: "retry-button",
                width: 60,
                height: 22,
                text: BI.i18nText("BI-Basic_Retry"),
                title: BI.i18nText("BI-Basic_Retry"),
                handler: function () {
                    self.toast.element.slideUp(500);
                    self._retryAll();
                }
            }, {
                type: "bi.icon_button",
                cls: "close-font",
                width: 20,
                height: 20,
                title: BI.i18nText("BI-Basic_Close"),
                handler: function () {
                    self.toast.element.slideUp(500);
                }
            }],
            width: 520,
            height: 30,
            hgap: 2
        });

        BI.createWidget({
            type: "bi.absolute",
            element: $("body"),
            items: [{
                el: this.toast,
                left: "50%",
                top: 0
            }]
        });
        this.toast.element.css({"margin-left": -1 * this.toast.element.outerWidth() / 2});
        this.toast.setVisible(false);
    },

    _retryAll: function () {
        var self = this;
        var clonedRequests = BI.deepClone(this.requests);
        this.requests = [];
        BI.each(clonedRequests, function (i, options) {
            BI.isFunction(self.callback) && self.callback(options);
        });
    },

    cancelAllRequests: function () {
        this.toast.element.slideUp(500);
        BI.each(this.requests, function (i, reqArgs) {
            if (BI.isNotNull(reqArgs) && BI.isFunction(reqArgs.complete)) {
                reqArgs.complete();
            }
        });
        this.requests = [];
    },

    setCallback: function (callback) {
        this.callback = callback;
    },

    addReq: function (options) {
        var self = this;
        if (this.requests.length === 0) {
            setTimeout(function () {
                if (self.requests.contains(options)) {
                    self.toast.element.slideDown(500);
                }
            }, 5 * 60 * 1000);  //5 min
        }
        this.requests.push(options);
    },

    removeReq: function (options) {
        BI.remove(this.requests, options);
        if (this.requests.length === 0) {
            this.toast.element.slideUp(500);
        }
    },

    hasReq: function (options) {
        return this.requests.contains(options);
    }
});
$.shortcut("bi.timeout_toast", BI.TimeoutToast);/**
 *
 * 自定义树
 *
 * Created by GUY on 2015/9/7.
 * @class BI.CustomTree
 * @extends BI.Single
 */
BI.CustomTree = BI.inherit(BI.Widget, {
    _defaultConfig: function () {
        return BI.extend(BI.CustomTree.superclass._defaultConfig.apply(this, arguments), {
            baseCls: "bi-custom-tree",
            expander: {
                el: {},
                popup: {
                    type: "bi.custom_tree"
                }
            },

            items: [],
            itemsCreator: BI.emptyFn,

            el: {
                type: "bi.button_tree",
                chooseType: 0,
                layouts: [{
                    type: "bi.vertical"
                }]
            }
        })
    },

    _init: function () {
        BI.CustomTree.superclass._init.apply(this, arguments);
        this.initTree(this.options.items);
    },

    setEnable: function (v) {
        BI.CustomTree.superclass.setEnable.apply(this, arguments);
        this.tree.setEnable(v)
    },

    _formatItems: function (nodes) {
        var self = this, o = this.options;
        nodes = BI.Tree.transformToTreeFormat(nodes);

        var items = [];
        BI.each(nodes, function (i, node) {
            if (BI.isNotEmptyArray(node.children) || node.isParent === true) {
                var item = BI.extend({
                    type: "bi.expander",
                    el: {},
                    popup: {type: "bi.custom_tree"}
                }, BI.deepClone(o.expander), {
                    id: node.id,
                    pId: node.pId,
                    value: node.value
                });
                var el = BI.stripEL(node);
                if (!BI.isWidget(el)) {
                    el = BI.clone(el);
                    delete el.children;
                    BI.extend(item.el, el);
                } else {
                    item.el = el;
                }
                item.popup.expander = BI.deepClone(o.expander);
                item.items = item.popup.items = node.children;
                item.itemsCreator = item.popup.itemsCreator = function (op) {
                    if (BI.isNotNull(op.node)) {//从子节点传过来的itemsCreator直接向上传递
                        return o.itemsCreator.apply(self, arguments);
                    }
                    var args = Array.prototype.slice.call(arguments, 0);
                    args[0].node = node;
                    return o.itemsCreator.apply(self, args);
                };
                BI.isNull(item.popup.el) && (item.popup.el = BI.deepClone(o.el));
                items.push(item);
            } else {
                items.push(node);
            }
        });
        return items;
    },

    //构造树结构，
    initTree: function (nodes) {
        var self = this, o = this.options;
        this.tree = BI.createWidget(o.el, {
            element: this,
            items: this._formatItems(nodes),
            itemsCreator: function (op, callback) {
                o.itemsCreator.apply(this, [op, function (items) {
                    var args = Array.prototype.slice.call(arguments, 0);
                    args[0] = self._formatItems(items);
                    callback.apply(null, args);
                }]);
            }
        });
        this.tree.on(BI.Controller.EVENT_CHANGE, function (type, val, obj) {
            self.fireEvent(BI.Controller.EVENT_CHANGE, arguments);
            if (type === BI.Events.CLICK) {
                self.fireEvent(BI.CustomTree.EVENT_CHANGE, val, obj);
            }
        })
    },

    //生成树方法
    stroke: function (nodes) {
        this.populate.apply(this, arguments);
    },

    populate: function (nodes) {
        var args = Array.prototype.slice.call(arguments, 0);
        if (arguments.length > 0) {
            args[0] = this._formatItems(nodes);
        }
        this.tree.populate.apply(this.tree, args);
    },

    doBehavior: function () {
        this.tree.doBehavior.apply(this.tree, arguments);
    },

    setValue: function (v) {
        this.tree && this.tree.setValue(v);
    },

    getValue: function () {
        return this.tree ? this.tree.getValue() : [];
    },

    getAllButtons: function () {
        return this.tree ? this.tree.getAllButtons() : [];
    },

    getAllLeaves: function () {
        return this.tree ? this.tree.getAllLeaves() : [];
    },

    getNodeById: function (id) {
        return this.tree && this.tree.getNodeById(id);
    },

    getNodeByValue: function (id) {
        return this.tree && this.tree.getNodeByValue(id);
    },

    empty: function () {
        this.tree.empty();
    }
});
BI.CustomTree.EVENT_CHANGE = "EVENT_CHANGE";

$.shortcut("bi.custom_tree", BI.CustomTree);