/**
 * 自适应宽度的表格
 *
 * Created by GUY on 2016/2/3.
 * @class BI.ResponisveTable
 * @extends BI.Widget
 */
BI.ResponisveTable = BI.inherit(BI.Widget, {

    _const: {
        perColumnSize: 100
    },

    _defaultConfig: function () {
        return BI.extend(BI.ResponisveTable.superclass._defaultConfig.apply(this, arguments), {
            baseCls: "bi-responsive-table",
            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
            logic: { // 冻结的页面布局逻辑
                dynamic: false
            },

            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

            // 交叉表头
            crossHeader: [],
            crossItems: []
        });
    },

    _init: function () {
        BI.ResponisveTable.superclass._init.apply(this, arguments);
        var self = this, o = this.options;

        this.table = BI.createWidget({
            type: "bi.table_view",
            element: this,
            logic: o.logic,

            isNeedFreeze: o.isNeedFreeze,
            freezeCols: o.freezeCols,

            isNeedMerge: o.isNeedMerge,
            mergeCols: o.mergeCols,
            mergeRule: o.mergeRule,

            columnSize: o.columnSize,
            headerRowSize: o.headerRowSize,
            footerRowSize: o.footerRowSize,
            rowSize: o.rowSize,

            regionColumnSize: o.regionColumnSize,

            header: o.header,
            footer: o.footer,
            items: o.items,
            // 交叉表头
            crossHeader: o.crossHeader,
            crossItems: o.crossItems
        });
        this.table.on(BI.Table.EVENT_TABLE_AFTER_INIT, function () {
            self._initRegionSize();
            self.table.resize();
            self._resizeHeader();
            self.fireEvent(BI.Table.EVENT_TABLE_AFTER_INIT, arguments);
        });
        this.table.on(BI.Table.EVENT_TABLE_RESIZE, function () {
            self._resizeRegion();
            self._resizeHeader();
            self.fireEvent(BI.Table.EVENT_TABLE_RESIZE, arguments);
        });
        this.table.on(BI.Table.EVENT_TABLE_SCROLL, function () {
            self.fireEvent(BI.Table.EVENT_TABLE_SCROLL, arguments);
        });
        this.table.on(BI.Table.EVENT_TABLE_BEFORE_REGION_RESIZE, function () {
            self.fireEvent(BI.Table.EVENT_TABLE_BEFORE_REGION_RESIZE, arguments);
        });
        this.table.on(BI.Table.EVENT_TABLE_REGION_RESIZE, function () {
            // important:在冻结并自适应列宽的情况下要随时变更表头宽度
            if (o.isNeedResize === true && self._isAdaptiveColumn()) {
                self._resizeHeader();
            }
            self.fireEvent(BI.Table.EVENT_TABLE_REGION_RESIZE, arguments);
        });
        this.table.on(BI.Table.EVENT_TABLE_AFTER_REGION_RESIZE, function () {
            self._resizeHeader();
            self.fireEvent(BI.Table.EVENT_TABLE_AFTER_REGION_RESIZE, arguments);
        });

        this.table.on(BI.Table.EVENT_TABLE_BEFORE_COLUMN_RESIZE, function () {
            self._resizeBody();
            self.fireEvent(BI.Table.EVENT_TABLE_BEFORE_COLUMN_RESIZE, arguments);
        });
        this.table.on(BI.Table.EVENT_TABLE_COLUMN_RESIZE, function () {
            self.fireEvent(BI.Table.EVENT_TABLE_COLUMN_RESIZE, arguments);
        });
        this.table.on(BI.Table.EVENT_TABLE_AFTER_COLUMN_RESIZE, function () {
            self._resizeRegion();
            self._resizeHeader();
            self.fireEvent(BI.Table.EVENT_TABLE_AFTER_COLUMN_RESIZE, arguments);
        });
    },

    _initRegionSize: function () {
        var o = this.options;
        if (o.isNeedFreeze === true) {
            var regionColumnSize = this.table.getRegionColumnSize();
            var maxWidth = this.table.element.width();
            if (!regionColumnSize[0] || (regionColumnSize[0] === "fill") || regionColumnSize[0] > maxWidth || regionColumnSize[1] > maxWidth) {
                var freezeCols = o.freezeCols;
                if (freezeCols.length === 0) {
                    this.table.setRegionColumnSize([0, "fill"]);
                } else if (freezeCols.length > 0 && freezeCols.length < o.columnSize.length) {
                    var size = maxWidth / 3;
                    if (freezeCols.length > o.columnSize.length / 2) {
                        size = maxWidth * 2 / 3;
                    }
                    this.table.setRegionColumnSize([size, "fill"]);
                } else {
                    this.table.setRegionColumnSize(["fill", 0]);
                }
            }
        }
    },

    _getBlockSize: function () {
        var o = this.options;
        var columnSize = this.table.getCalculateColumnSize();
        if (o.isNeedFreeze === true) {
            var columnSizeLeft = [], columnSizeRight = [];
            BI.each(columnSize, function (i, size) {
                if (o.freezeCols.contains(i)) {
                    columnSizeLeft.push(size);
                } else {
                    columnSizeRight.push(size);
                }
            });
            // 因为有边框，所以加上数组长度的参数调整
            var sumLeft = BI.sum(columnSizeLeft) + columnSizeLeft.length,
                sumRight = BI.sum(columnSizeRight) + columnSizeRight.length;
            return {
                sumLeft: sumLeft,
                sumRight: sumRight,
                left: columnSizeLeft,
                right: columnSizeRight
            };
        }
        return {
            size: columnSize,
            sum: BI.sum(columnSize) + columnSize.length
        };
    },

    _isAdaptiveColumn: function (columnSize) {
        return !(BI.last(columnSize || this.table.getColumnSize()) > 1.05);
    },

    _resizeHeader: function () {
        var self = this, o = this.options;
        if (o.isNeedFreeze === true) {
            // 若是当前处于自适应调节阶段
            if (this._isAdaptiveColumn()) {
                var columnSize = this.table.getCalculateColumnSize();
                this.table.setHeaderColumnSize(columnSize);
            } else {
                var regionColumnSize = this.table.getClientRegionColumnSize();
                var block = this._getBlockSize();
                var sumLeft = block.sumLeft, sumRight = block.sumRight;
                var columnSizeLeft = block.left, columnSizeRight = block.right;
                columnSizeLeft[columnSizeLeft.length - 1] += regionColumnSize[0] - sumLeft;
                columnSizeRight[columnSizeRight.length - 1] += regionColumnSize[1] - sumRight;

                var newLeft = BI.clone(columnSizeLeft), newRight = BI.clone(columnSizeRight);
                newLeft[newLeft.length - 1] = "";
                newRight[newRight.length - 1] = "";
                this.table.setColumnSize(newLeft.concat(newRight));

                block = self._getBlockSize();
                if (columnSizeLeft[columnSizeLeft.length - 1] < block.left[block.left.length - 1]) {
                    columnSizeLeft[columnSizeLeft.length - 1] = block.left[block.left.length - 1];
                }
                if (columnSizeRight[columnSizeRight.length - 1] < block.right[block.right.length - 1]) {
                    columnSizeRight[columnSizeRight.length - 1] = block.right[block.right.length - 1];
                }

                self.table.setColumnSize(columnSizeLeft.concat(columnSizeRight));
            }
        } else {
            if (!this._isAdaptiveColumn()) {
                var regionColumnSize = this.table.getClientRegionColumnSize();
                var block = this._getBlockSize();
                var sum = block.sum;
                var size = block.size;

                size[size.length - 1] += regionColumnSize[0] - sum;

                var newSize = BI.clone(size);
                newSize[newSize.length - 1] = "";
                this.table.setColumnSize(newSize);
                block = this._getBlockSize();

                if (size[size.length - 1] < block.size[block.size.length - 1]) {
                    size[size.length - 1] = block.size[block.size.length - 1];
                }
                this.table.setColumnSize(size);
            }
        }
    },

    _resizeBody: function () {
        if (this._isAdaptiveColumn()) {
            var columnSize = this.table.getCalculateColumnSize();
            this.setColumnSize(columnSize);
        }
    },

    _adjustRegion: function () {
        var o = this.options;
        var regionColumnSize = this.table.getCalculateRegionColumnSize();
        if (o.isNeedFreeze === true && o.freezeCols.length > 0 && o.freezeCols.length < o.columnSize.length) {
            var block = this._getBlockSize();
            var sumLeft = block.sumLeft, sumRight = block.sumRight;
            if (sumLeft < regionColumnSize[0] || regionColumnSize[0] >= (sumLeft + sumRight)) {
                this.table.setRegionColumnSize([sumLeft, "fill"]);
            }
            this._resizeRegion();
        }
    },

    _resizeRegion: function () {
        var o = this.options;
        var regionColumnSize = this.table.getCalculateRegionColumnSize();
        if (o.isNeedFreeze === true && o.freezeCols.length > 0 && o.freezeCols.length < o.columnSize.length) {
            var maxWidth = this.table.element.width();
            if (regionColumnSize[0] < 15 || regionColumnSize[1] < 15) {
                var freezeCols = o.freezeCols;
                var size = maxWidth / 3;
                if (freezeCols.length > o.columnSize.length / 2) {
                    size = maxWidth * 2 / 3;
                }
                this.table.setRegionColumnSize([size, "fill"]);
            }
        }
    },


    resize: function () {
        this.table.resize();
        this._resizeRegion();
        this._resizeHeader();
    },

    setColumnSize: function (columnSize) {
        this.table.setColumnSize(columnSize);
        this._adjustRegion();
        this._resizeHeader();
    },

    getColumnSize: function () {
        return this.table.getColumnSize();
    },

    getCalculateColumnSize: function () {
        return this.table.getCalculateColumnSize();
    },

    setHeaderColumnSize: function (columnSize) {
        this.table.setHeaderColumnSize(columnSize);
        this._adjustRegion();
        this._resizeHeader();
    },

    setRegionColumnSize: function (columnSize) {
        this.table.setRegionColumnSize(columnSize);
        this._resizeHeader();
    },

    getRegionColumnSize: function () {
        return this.table.getRegionColumnSize();
    },

    getCalculateRegionColumnSize: function () {
        return this.table.getCalculateRegionColumnSize();
    },

    getCalculateRegionRowSize: function () {
        return this.table.getCalculateRegionRowSize();
    },

    getClientRegionColumnSize: function () {
        return this.table.getClientRegionColumnSize();
    },

    getScrollRegionColumnSize: function () {
        return this.table.getScrollRegionColumnSize();
    },

    getScrollRegionRowSize: function () {
        return this.table.getScrollRegionRowSize();
    },

    hasVerticalScroll: function () {
        return this.table.hasVerticalScroll();
    },

    setVerticalScroll: function (scrollTop) {
        this.table.setVerticalScroll(scrollTop);
    },

    setLeftHorizontalScroll: function (scrollLeft) {
        this.table.setLeftHorizontalScroll(scrollLeft);
    },

    setRightHorizontalScroll: function (scrollLeft) {
        this.table.setRightHorizontalScroll(scrollLeft);
    },

    getVerticalScroll: function () {
        return this.table.getVerticalScroll();
    },

    getLeftHorizontalScroll: function () {
        return this.table.getLeftHorizontalScroll();
    },

    getRightHorizontalScroll: function () {
        return this.table.getRightHorizontalScroll();
    },

    getColumns: function () {
        return this.table.getColumns();
    },

    attr: function () {
        BI.ResponisveTable.superclass.attr.apply(this, arguments);
        this.table.attr.apply(this.table, arguments);
    },

    populate: function (items) {
        var self = this, o = this.options;
        this.table.populate.apply(this.table, arguments);
        if (o.isNeedFreeze === true) {
            BI.nextTick(function () {
                self._initRegionSize();
                self.table.resize();
                self._resizeHeader();
            });
        }
    }
});
BI.shortcut("bi.responsive_table", BI.ResponisveTable);