/**
 * 预览表
 *
 * Created by GUY on 2015/12/25.
 * @class BI.PreviewTable
 * @extends BI.Widget
 */
BI.PreviewTable = BI.inherit(BI.Widget, {

    _defaultConfig: function () {
        return BI.extend(BI.PreviewTable.superclass._defaultConfig.apply(this, arguments), {
            baseCls: "bi-preview-table",
            isNeedFreeze: false,
            freezeCols: [],
            rowSize: null,
            columnSize: [],
            headerRowSize: 30,
            header: [],
            items: []
        });
    },

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

        this.table = BI.createWidget({
            type: "bi.table_view",
            element: this,
            isNeedResize: false,

            isResizeAdapt: false,

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

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

            header: BI.map(o.header, function (i, items) {
                return BI.map(items, function (j, item) {
                    return BI.extend({
                        type: "bi.preview_table_header_cell"
                    }, item);
                });
            }),
            items: BI.map(o.items, function (i, items) {
                return BI.map(items, function (j, item) {
                    return BI.extend({
                        type: "bi.preview_table_cell"
                    }, item);
                });
            })
        });
        this.table.on(BI.Table.EVENT_TABLE_AFTER_INIT, function () {
            self.fireEvent(BI.Table.EVENT_TABLE_AFTER_INIT, arguments);
        });
        this.table.on(BI.Table.EVENT_TABLE_RESIZE, function () {
            self._adjustColumns();
        });
        this._adjustColumns();
    },

    // 是否有自适应调节的列，即列宽为""
    _hasAdaptCol: function (columnSize) {
        return BI.any(columnSize, function (i, size) {
            return size === "";
        });
    },

    _isPercentage: function (columnSize) {
        return columnSize[0] <= 1;
    },

    _adjustColumns: function () {
        var self = this, o = this.options;
        if (o.isNeedFreeze === true) {
            // 如果存在百分比的情况
            if (this._isPercentage(o.columnSize)) {
                if (this._hasAdaptCol(o.columnSize)) {
                    var findCols = [], remain = 0;
                    BI.each(o.columnSize, function (i, size) {
                        if (size === "") {
                            findCols.push(i);
                        } else {
                            remain += size;
                        }
                    });
                    remain = 1 - remain;
                    var average = remain / findCols.length;
                    BI.each(findCols, function (i, col) {
                        o.columnSize[col] = average;
                    });
                }
                var isRight = BI.first(o.freezeCols) !== 0;
                var freezeSize = [], notFreezeSize = [];
                BI.each(o.columnSize, function (i, size) {
                    if (o.freezeCols.contains(i)) {
                        freezeSize.push(size);
                    } else {
                        notFreezeSize.push(size);
                    }
                });
                var sumFreezeSize = BI.sum(freezeSize), sumNotFreezeSize = BI.sum(notFreezeSize);
                BI.each(freezeSize, function (i, size) {
                    freezeSize[i] = size / sumFreezeSize;
                });
                BI.each(notFreezeSize, function (i, size) {
                    notFreezeSize[i] = size / sumNotFreezeSize;
                });
                this.table.setRegionColumnSize(isRight ? ["fill", sumFreezeSize] : [sumFreezeSize, "fill"]);
                this.table.setColumnSize(isRight ? (notFreezeSize.concat(freezeSize)) : (freezeSize.concat(notFreezeSize)));
            }
        } else {
            // 如果存在自适应宽度的列或者是百分比计算的列，需要将整个表宽设为100%
            if (this._hasAdaptCol(o.columnSize) || this._isPercentage(o.columnSize)) {
                this.table.setRegionColumnSize(["100%"]);
            }
        }
    },

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

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

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

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

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

    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) {
        return this.table.setVerticalScroll(scrollTop);
    },

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

    setRightHorizontalScroll: function (scrollLeft) {
        return 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();
    },

    populate: function (items, header) {
        if (items) {
            items = BI.map(items, function (i, items) {
                return BI.map(items, function (j, item) {
                    return BI.extend({
                        type: "bi.preview_table_cell"
                    }, item);
                });
            });
        }
        if (header) {
            header = BI.map(header, function (i, items) {
                return BI.map(items, function (j, item) {
                    return BI.extend({
                        type: "bi.preview_table_header_cell"
                    }, item);
                });
            });
        }
        this.table.populate(items, header);
        this._adjustColumns();
    }
});
BI.PreviewTable.EVENT_CHANGE = "PreviewTable.EVENT_CHANGE";
BI.shortcut("bi.preview_table", BI.PreviewTable);