# GridView.js

    /**
     * @class YAHOO.ext.grid.GridView
     * Default UI code used internally by the Grid. This is the object returned by {@link YAHOO.ext.grid.Grid#getView}.
     * @constructor
     */
    YAHOO.ext.grid.GridView = function(){
    	this.grid = null;
    	this.lastFocusedRow = null;
    	this.onScroll = new YAHOO.util.CustomEvent('onscroll');
    	this.adjustScrollTask = new YAHOO.ext.util.DelayedTask(this._adjustForScroll, this);
    	this.ensureVisibleTask = new YAHOO.ext.util.DelayedTask();
    };

    YAHOO.ext.grid.GridView.prototype = {
    	init: function(grid){
    		this.grid = grid;
    	},

    	fireScroll: function(scrollLeft, scrollTop){
    		this.onScroll.fireDirect(this.grid, scrollLeft, scrollTop);
    	},

    	/**
    	 * @private
    	 * Utility method that gets an array of the cell renderers
    	 */
    	getColumnRenderers : function(){
        	var renderers = [];
        	var cm = this.grid.colModel;
            var colCount = cm.getColumnCount();
            for(var i = 0; i < colCount; i++){
                renderers.push(cm.getRenderer(i));
            }
            return renderers;
        },

        buildIndexMap : function(){
            var colToData = {};
            var dataToCol = {};
            var cm = this.grid.colModel;
            for(var i = 0, len = cm.getColumnCount(); i < len; i++){
                var di = cm.getDataIndex(i);
                colToData[i] = di;
                dataToCol[di] = i;
            }
            return {'colToData': colToData, 'dataToCol': dataToCol};
        },

        getDataIndexes : function(){
        	if(!this.indexMap){
                this.indexMap = this.buildIndexMap();
            }
            return this.indexMap.colToData;
        },

        getColumnIndexByDataIndex : function(dataIndex){
            if(!this.indexMap){
                this.indexMap = this.buildIndexMap();
            }
        	return this.indexMap.dataToCol[dataIndex];
        },

        updateHeaders : function(){
            var colModel = this.grid.colModel;
            var hcells = this.headers;
            var colCount = colModel.getColumnCount();
            for(var i = 0; i < colCount; i++){
                hcells[i].textNode.innerHTML = colModel.getColumnHeader(i);
            }
        },

        adjustForScroll : function(disableDelay){
            if(!disableDelay){
                this.adjustScrollTask.delay(50);
            }else{
                this._adjustForScroll();
            }
        },

        /**
         * Returns the rowIndex/columnIndex of the cell found at the passed page coordinates
         * @param {Number} x
         * @param {Number} y
         * @return {Array} [rowIndex, columnIndex]
         */
         getCellAtPoint : function(x, y){
            var colIndex = null;
            var rowIndex = null;

            // translate page coordinates to local coordinates
            var xy = YAHOO.util.Dom.getXY(this.wrap);
            x = (x - xy[0]) + this.wrap.scrollLeft;
            y = (y - xy[1]) + this.wrap.scrollTop;

            var colModel = this.grid.colModel;
            var pos = 0;
            var colCount = colModel.getColumnCount();
            for(var i = 0; i < colCount; i++){
                if(colModel.isHidden(i)) continue;
                var width = colModel.getColumnWidth(i);
                if(x >= pos && x < pos+width){
                    colIndex = i;
                    break;
                }
                pos += width;
            }
            if(colIndex != null){
                rowIndex = (y == 0 ? 0 : Math.floor(y / this.getRowHeight()));
                if(rowIndex >= this.grid.dataModel.getRowCount()){
                    return null;
                }
                return [colIndex, rowIndex];
            }
            return null;
        },

        /** @private */
        _adjustForScroll : function(){
            this.forceScrollUpdate();
            if(this.scrollbarMode == YAHOO.ext.grid.GridView.SCROLLBARS_OVERLAP){
                var adjustment = 0;
                if(this.wrap.clientWidth && this.wrap.clientWidth !== 0){
                    adjustment = this.wrap.offsetWidth - this.wrap.clientWidth;
                }
                this.hwrap.setWidth(this.wrap.offsetWidth-adjustment);
            }else{
                this.hwrap.setWidth(this.wrap.offsetWidth);
            }
            this.bwrap.setWidth(Math.max(this.grid.colModel.getTotalWidth(), this.wrap.clientWidth));
        },

        /**
         * Focuses the specified row. The preferred way to scroll to a row is {@link #ensureVisible}.
         * @param {Number/HTMLElement} row The index of a row or the row itself
         */
         focusRow : function(row){
            if(typeof row == 'number'){
                row = this.getBodyTable().childNodes[row];
            }
            if(!row) return;
        	var left = this.wrap.scrollLeft;
        	try{ // try catch for IE occasional focus bug
        	    row.childNodes.item(0).hideFocus = true;
            	row.childNodes.item(0).focus();
            }catch(e){}
            this.ensureVisible(row);
            this.wrap.scrollLeft = left;
            this.handleScroll();
            this.lastFocusedRow = row;
        },

        /**
         * Scrolls the specified row into view. This call is automatically buffered (delayed), to disable
         * the delay, pass true for disableDelay.
         * @param {Number/HTMLElement} row The index of a row or the row itself
         * @param {Boolean} disableDelay
         */
         ensureVisible : function(row, disableDelay){
            if(!disableDelay){
                this.ensureVisibleTask.delay(50, this._ensureVisible, this, [row]);
            }else{
                this._ensureVisible(row);
            }
        },

        /** @ignore */
        _ensureVisible : function(row){
            if(typeof row == 'number'){
                row = this.getBodyTable().childNodes[row];
            }
            if(!row) return;
        	var left = this.wrap.scrollLeft;
        	var rowTop = parseInt(row.offsetTop, 10); // parseInt for safari bug
            var rowBottom = rowTop + row.offsetHeight;
            var clientTop = parseInt(this.wrap.scrollTop, 10); // parseInt for safari bug
            var clientBottom = clientTop + this.wrap.clientHeight;
            if(rowTop < clientTop){
            	this.wrap.scrollTop = rowTop;
            }else if(rowBottom > clientBottom){
                this.wrap.scrollTop = rowBottom-this.wrap.clientHeight;
            }
            this.wrap.scrollLeft = left;
            this.handleScroll();
        },

        updateColumns : function(){
            this.grid.stopEditing();
            var colModel = this.grid.colModel;
            var hcols = this.headers;
            var colCount = colModel.getColumnCount();
            var pos = 0;
            var totalWidth = colModel.getTotalWidth();
            for(var i = 0; i < colCount; i++){
                if(colModel.isHidden(i)) continue;
                var width = colModel.getColumnWidth(i);
                hcols[i].style.width = width + 'px';
                hcols[i].style.left = pos + 'px';
                hcols[i].split.style.left = (pos+width-3) + 'px';
                this.setCSSWidth(i, width, pos);
                pos += width;
            }
            this.lastWidth = totalWidth;
            if(this.grid.autoWidth){
                this.grid.container.setWidth(totalWidth+this.grid.container.getBorderWidth('lr'));
                this.grid.autoSize();
            }
            this.bwrap.setWidth(Math.max(totalWidth, this.wrap.clientWidth));
            if(!YAHOO.ext.util.Browser.isIE){ // fix scrolling prob in gecko and opera
            	this.wrap.scrollLeft = this.hwrap.dom.scrollLeft;
            }
            this.syncScroll();
            this.forceScrollUpdate();
            if(this.grid.autoHeight){
                this.autoHeight();
                this.updateWrapHeight();
            }
        },

        setCSSWidth : function(colIndex, width, pos){
            var selector = ["#" + this.grid.id + " .ygrid-col-" + colIndex, ".ygrid-col-" + colIndex];
            YAHOO.ext.util.CSS.updateRule(selector, 'width', width + 'px');
            if(typeof pos == 'number'){
                YAHOO.ext.util.CSS.updateRule(selector, 'left', pos + 'px');
            }
        },

        /**
         * Set a css style for a column dynamically.
         * @param {Number} colIndex The index of the column
         * @param {String} name The css property name
         * @param {String} value The css value
         */
         setCSSStyle : function(colIndex, name, value){
            var selector = ["#" + this.grid.id + " .ygrid-col-" + colIndex, ".ygrid-col-" + colIndex];
            YAHOO.ext.util.CSS.updateRule(selector, name, value);
        },

        handleHiddenChange : function(colModel, colIndex, hidden){
            if(hidden){
                this.hideColumn(colIndex);
            }else{
                this.unhideColumn(colIndex);
            }
            this.updateColumns();
        },

        hideColumn : function(colIndex){
            var selector = ["#" + this.grid.id + " .ygrid-col-" + colIndex, ".ygrid-col-" + colIndex];
            YAHOO.ext.util.CSS.updateRule(selector, 'position', 'absolute');
            YAHOO.ext.util.CSS.updateRule(selector, 'visibility', 'hidden');

            this.headers[colIndex].style.display = 'none';
            this.headers[colIndex].split.style.display = 'none';
        },

        unhideColumn : function(colIndex){
            var selector = ["#" + this.grid.id + " .ygrid-col-" + colIndex, ".ygrid-col-" + colIndex];
            YAHOO.ext.util.CSS.updateRule(selector, 'position', '');
            YAHOO.ext.util.CSS.updateRule(selector, 'visibility', 'visible');

            this.headers[colIndex].style.display = '';
            this.headers[colIndex].split.style.display = '';
        },

        getBodyTable : function(){
        	return this.bwrap.dom;
        },

        updateRowIndexes : function(firstRow, lastRow){
            var stripeRows = this.grid.stripeRows;
            var bt = this.getBodyTable();
            var nodes = bt.childNodes;
            firstRow = firstRow || 0;
            lastRow = lastRow || nodes.length-1;
            var re = /^(?:ygrid-row ygrid-row-alt|ygrid-row)/;
            for(var rowIndex = firstRow; rowIndex <= lastRow; rowIndex++){
                var node = nodes[rowIndex];
                if(stripeRows && (rowIndex+1) % 2 == 0){
            		node.className = node.className.replace(re, 'ygrid-row ygrid-row-alt');
            	}else{
            		node.className = node.className.replace(re, 'ygrid-row');
            	}
                node.rowIndex = rowIndex;
                nodes[rowIndex].style.top = (rowIndex * this.rowHeight) + 'px';
            }
        },

        insertRows : function(dataModel, firstRow, lastRow){
            this.updateBodyHeight();
            this.adjustForScroll(true);
            var renderers = this.getColumnRenderers();
            var dindexes = this.getDataIndexes();
            var colCount = this.grid.colModel.getColumnCount();
            var beforeRow = null;
            var bt = this.getBodyTable();
            if(firstRow < bt.childNodes.length){
                beforeRow = bt.childNodes[firstRow];
            }
            for(var rowIndex = firstRow; rowIndex <= lastRow; rowIndex++){
                var row = document.createElement('span');
                row.className = 'ygrid-row';
                row.style.top = (rowIndex * this.rowHeight) + 'px';
                this.renderRow(dataModel, row, rowIndex, colCount, renderers, dindexes);
                if(beforeRow){
                	bt.insertBefore(row, beforeRow);
                }else{
                    bt.appendChild(row);
                }
            }
            this.updateRowIndexes(firstRow);
            this.adjustForScroll(true);
        },

        renderRow : function(dataModel, row, rowIndex, colCount, renderers, dindexes){
            for(var colIndex = 0; colIndex < colCount; colIndex++){
                var td = document.createElement('span');
                td.className = 'ygrid-col ygrid-col-' + colIndex + (colIndex == colCount-1 ? ' ygrid-col-last' : '');
                td.columnIndex = colIndex;
                td.tabIndex = 0;
                var span = document.createElement('span');
                span.className = 'ygrid-cell-text';
                td.appendChild(span);
                var val = renderers[colIndex](dataModel.getValueAt(rowIndex, dindexes[colIndex]), rowIndex, colIndex, td);
                if(typeof val == 'undefined' || val === '') val = '&#160;';
                span.innerHTML = val;
                row.appendChild(td);
            }
        },

        deleteRows : function(dataModel, firstRow, lastRow){
            this.updateBodyHeight();
            // first make sure they are deselected
            this.grid.selModel.deselectRange(firstRow, lastRow);
            var bt = this.getBodyTable();
            var rows = []; // get references because the rowIndex will change
            for(var rowIndex = firstRow; rowIndex <= lastRow; rowIndex++){
                rows.push(bt.childNodes[rowIndex]);
            }
            for(var i = 0; i < rows.length; i++){
                bt.removeChild(rows[i]);
                rows[i] = null;
            }
            rows = null;
            this.updateRowIndexes(firstRow);
            this.adjustForScroll();
        },

        updateRows : function(dataModel, firstRow, lastRow){
            var bt = this.getBodyTable();
            var dindexes = this.getDataIndexes();
            var renderers = this.getColumnRenderers();
            var colCount = this.grid.colModel.getColumnCount();
            for(var rowIndex = firstRow; rowIndex <= lastRow; rowIndex++){
                var row = bt.rows[rowIndex];
                var cells = row.childNodes;
                for(var colIndex = 0; colIndex < colCount; colIndex++){
                    var td = cells[colIndex];
                    var val = renderers[colIndex](dataModel.getValueAt(rowIndex, dindexes[colIndex]), rowIndex, colIndex, td);
                    if(typeof val == 'undefined' || val === '') val = '&#160;';
                    td.firstChild.innerHTML = val;
                }
            }
        },

        handleSort : function(dataModel, sortColumnIndex, sortDir, noRefresh){
            this.grid.selModel.syncSelectionsToIds();
            if(!noRefresh){
               this.updateRows(dataModel, 0, dataModel.getRowCount()-1);
            }
            this.updateHeaderSortState();
            if(this.lastFocusedRow){
                this.focusRow(this.lastFocusedRow);
            }
        },

        syncScroll : function(){
            this.hwrap.dom.scrollLeft = this.wrap.scrollLeft;
        },

        handleScroll : function(){
            this.syncScroll();
            this.fireScroll(this.wrap.scrollLeft, this.wrap.scrollTop);
            this.grid.fireEvent('bodyscroll', this.wrap.scrollLeft, this.wrap.scrollTop);
        },

        getRowHeight : function(){
            if(!this.rowHeight){
                var rule = YAHOO.ext.util.CSS.getRule(["#" + this.grid.id + " .ygrid-row", ".ygrid-row"]);
            	if(rule && rule.style.height){
            	    this.rowHeight = parseInt(rule.style.height, 10);
            	}else{
            	    this.rowHeight = 21;
            	}
            }
            return this.rowHeight;
        },

        renderRows : function(dataModel){
            this.grid.stopEditing();
            if(this.grid.selModel){
                this.grid.selModel.clearSelections();
            }
        	var bt = this.getBodyTable();
        	bt.innerHTML = '';
        	this.rowHeight = this.getRowHeight();
        	this.insertRows(dataModel, 0, dataModel.getRowCount()-1);
        },

        updateCell : function(dataModel, rowIndex, dataIndex){
            var colIndex = this.getColumnIndexByDataIndex(dataIndex);
            if(typeof colIndex == 'undefined'){ // not present in grid
                return;
            }
            var bt = this.getBodyTable();
            var row = bt.childNodes[rowIndex];
            var cell = row.childNodes[colIndex];
            var renderer = this.grid.colModel.getRenderer(colIndex);
            var val = renderer(dataModel.getValueAt(rowIndex, dataIndex), rowIndex, colIndex, cell);
            if(typeof val == 'undefined' || val === '') val = '&#160;';
            cell.firstChild.innerHTML = val;
        },

        calcColumnWidth : function(colIndex, maxRowsToMeasure){
            var maxWidth = 0;
            var bt = this.getBodyTable();
            var rows = bt.childNodes;
            var stopIndex = Math.min(maxRowsToMeasure || rows.length, rows.length);
            if(this.grid.autoSizeHeaders){
                var h = this.headers[colIndex];
                var curWidth = h.style.width;
                h.style.width = this.grid.minColumnWidth+'px';
                maxWidth = Math.max(maxWidth, h.scrollWidth);
                h.style.width = curWidth;
            }
            for(var i = 0; i < stopIndex; i++){
                var cell = rows[i].childNodes[colIndex].firstChild;
                maxWidth = Math.max(maxWidth, cell.scrollWidth);
            }
            return maxWidth + /*margin for error in IE*/ 5;
        },

        /**
         * Autofit a column to it's content.
         * @param {Number} colIndex
         * @param {Boolean} forceMinSize true to force the column to go smaller if possible
         */
         autoSizeColumn : function(colIndex, forceMinSize){
            if(forceMinSize){
               this.setCSSWidth(colIndex, this.grid.minColumnWidth);
            }
            var newWidth = this.calcColumnWidth(colIndex);
            this.grid.colModel.setColumnWidth(colIndex,
                Math.max(this.grid.minColumnWidth, newWidth));
            this.grid.fireEvent('columnresize', colIndex, newWidth);
        },

        /**
         * Autofits all columns to their content and then expands to fit any extra space in the grid
         */
         autoSizeColumns : function(){
            var colModel = this.grid.colModel;
            var colCount = colModel.getColumnCount();
            var wrap = this.wrap;
            for(var i = 0; i < colCount; i++){
                this.setCSSWidth(i, this.grid.minColumnWidth);
                colModel.setColumnWidth(i, this.calcColumnWidth(i, this.grid.maxRowsToMeasure), true);
            }
            if(colModel.getTotalWidth() < wrap.clientWidth){
                var diff = Math.floor((wrap.clientWidth - colModel.getTotalWidth()) / colCount);
                for(var i = 0; i < colCount; i++){
                    colModel.setColumnWidth(i, colModel.getColumnWidth(i) + diff, true);
                }
            }
            this.updateColumns();
        },

        /**
         * Autofits all columns to the grid's width proportionate with their current size
         */
        fitColumns : function(){
            var cm = this.grid.colModel;
            var colCount = cm.getColumnCount();
            var cols = [];
            var width = 0;
            var i, w;
            for (i = 0; i < colCount; i++){
                if(!cm.isHidden(i) && !cm.isFixed(i)){
                    w = cm.getColumnWidth(i);
                    cols.push(i);
                    cols.push(w);
                    width += w;
                }
            }
            var frac = (this.wrap.clientWidth - cm.getTotalWidth())/width;
            while (cols.length){
                w = cols.pop();
                i = cols.pop();
                cm.setColumnWidth(i, Math.floor(w + w*frac), true);
            }
            this.updateColumns();
        },

        onWindowResize : function(){
            if(this.grid.monitorWindowResize){
                this.adjustForScroll();
                this.updateWrapHeight();
                this.adjustForScroll();
            }
        },

        updateWrapHeight : function(){
            this.grid.container.beginMeasure();
            this.autoHeight();
            var box = this.grid.container.getSize(true);
            this.wrapEl.setHeight(box.height-this.footerHeight-parseInt(this.wrap.offsetTop, 10));
            this.pwrap.setSize(box.width, box.height);
            this.grid.container.endMeasure();
        },

        forceScrollUpdate : function(){
            var wrap = this.wrapEl;
            wrap.setWidth(wrap.getWidth(true));
            setTimeout(function(){ // set timeout so FireFox works
                wrap.setWidth('');
            }, 1);
        },

        updateHeaderSortState : function(){
            var state = this.grid.dataModel.getSortState();
            if(!state || typeof state.column == 'undefined') return;
            var sortColumn = this.getColumnIndexByDataIndex(state.column);
            var sortDir = state.direction;
            for(var i = 0, len = this.headers.length; i < len; i++){
                var h = this.headers[i];
                if(i != sortColumn){
                    h.sortDesc.style.display = 'none';
                    h.sortAsc.style.display = 'none';
                }else{
                    h.sortDesc.style.display = sortDir == 'DESC' ? 'block' : 'none';
                    h.sortAsc.style.display = sortDir == 'ASC' ? 'block' : 'none';
                }
            }
        },

        unplugDataModel : function(dm){
            dm.removeListener('cellupdated', this.updateCell, this);
            dm.removeListener('datachanged', this.renderRows, this);
            dm.removeListener('rowsdeleted', this.deleteRows, this);
            dm.removeListener('rowsinserted', this.insertRows, this);
            dm.removeListener('rowsupdated', this.updateRows, this);
            dm.removeListener('rowssorted', this.handleSort, this);
        },

        plugDataModel : function(dm){
            dm.on('cellupdated', this.updateCell, this, true);
            dm.on('datachanged', this.renderRows, this, true);
            dm.on('rowsdeleted', this.deleteRows, this, true);
            dm.on('rowsinserted', this.insertRows, this, true);
            dm.on('rowsupdated', this.updateRows, this, true);
            dm.on('rowssorted', this.handleSort, this, true);
        },

        destroy : function(){
            this.unplugDataModel(this.grid.dataModel);
            var sp = this.splitters;
            if(sp){
                for(var i in sp){
                    if(sp[i] && typeof sp[i] != 'function'){
                        sp[i].destroy(true);
                    }
                }
            }
        },

        render : function(){
            var grid = this.grid;
            var container = grid.container.dom;
            var dataModel = grid.dataModel;
            this.plugDataModel(dataModel);

            var colModel = grid.colModel;
            colModel.onWidthChange.subscribe(this.updateColumns, this, true);
            colModel.onHeaderChange.subscribe(this.updateHeaders, this, true);
            colModel.onHiddenChange.subscribe(this.handleHiddenChange, this, true);

            if(grid.monitorWindowResize === true){
                YAHOO.ext.EventManager.onWindowResize(this.onWindowResize, this, true);
            }
            var autoSizeDelegate = this.autoSizeColumn.createDelegate(this);

            var colCount = colModel.getColumnCount();

            var dh = YAHOO.ext.DomHelper;
            this.pwrap = dh.append(container,
                {tag: 'div', cls: 'ygrid-positioner',
                style: 'position:relative;width:100%;height:100%;left:0;top:0;overflow:hidden;'}, true);
            var pos = this.pwrap.dom;

            //create wrapper elements that handle offsets and scrolling
            var wrap = dh.append(pos, {tag: 'div', cls: 'ygrid-wrap'});
            this.wrap = wrap;
            this.wrapEl = getEl(wrap, true);
            YAHOO.ext.EventManager.on(wrap, 'scroll', this.handleScroll, this, true);

            var hwrap = dh.append(pos, {tag: 'div', cls: 'ygrid-wrap-headers'});
            this.hwrap = getEl(hwrap, true);

            var bwrap = dh.append(wrap, {tag: 'div', cls: 'ygrid-wrap-body', id: container.id + '-body'});
            this.bwrap = getEl(bwrap, true);
            this.bwrap.setWidth(colModel.getTotalWidth());
            bwrap.rows = bwrap.childNodes;

            this.footerHeight = 0;
            var foot = this.appendFooter(this.pwrap.dom);
            if(foot){
                this.footer = getEl(foot, true);
                this.footerHeight = this.footer.getHeight();
            }
            this.updateWrapHeight();

            var hrow = dh.append(hwrap, {tag: 'span', cls: 'ygrid-hrow'});
            this.hrow = hrow;

            if(!YAHOO.ext.util.Browser.isGecko){
                // IE doesn't like iframes, we will leave this alone
                var iframe = document.createElement('iframe');
                iframe.className = 'ygrid-hrow-frame';
                iframe.frameBorder = 0;
                iframe.src = YAHOO.ext.SSL_SECURE_URL;
                hwrap.appendChild(iframe);
            }
            this.headerCtrl = new YAHOO.ext.grid.HeaderController(this.grid);
            this.headers = [];
            this.cols = [];
            this.splitters = [];

            var htemplate = dh.createTemplate({
               tag: 'span', cls: 'ygrid-hd ygrid-header-{0}', children: [{
                    tag: 'span',
                    cls: 'ygrid-hd-body',
                    html: '<table border="0" cellpadding="0" cellspacing="0" title="{2}">' +
                          '<tbody><tr><td><span>{1}</span></td>' +
                          '<td><span class="sort-desc"></span><span class="sort-asc"></span></td>' +
                          '</tr></tbody></table>'
               }]
            });
            htemplate.compile();
            for(var i = 0; i < colCount; i++){
                var hd = htemplate.append(hrow, [i, colModel.getColumnHeader(i), colModel.getColumnTooltip(i) || '']);
                var spans = hd.getElementsByTagName('span');
                hd.textNode = spans[1];
                hd.sortDesc = spans[2];
                hd.sortAsc = spans[3];
        	    hd.columnIndex = i;
                this.headers.push(hd);
                if(colModel.isSortable(i)){
                    this.headerCtrl.register(hd);
                }
                var split = dh.append(hrow, {tag: 'span', cls: 'ygrid-hd-split'});
                hd.split = split;

            	if(colModel.isResizable(i) && !colModel.isFixed(i)){
                	YAHOO.util.Event.on(split, 'dblclick', autoSizeDelegate.createCallback(i+0, true));
                	var sb = new YAHOO.ext.SplitBar(split, hd, null, YAHOO.ext.SplitBar.LEFT);
                	sb.columnIndex = i;
                	sb.minSize = grid.minColumnWidth;
                	sb.onMoved.subscribe(this.onColumnSplitterMoved, this, true);
                	YAHOO.util.Dom.addClass(sb.proxy, 'ygrid-column-sizer');
                	YAHOO.util.Dom.setStyle(sb.proxy, 'background-color', '');
                	sb.dd._resizeProxy = function(){
                	    var el = this.getDragEl();
                	    YAHOO.util.Dom.setStyle(el, 'height', (hwrap.clientHeight+wrap.clientHeight-2) +'px');
                	};
                	this.splitters[i] = sb;
            	}else{
            	    split.style.cursor = 'default';
            	}
            }
           if(grid.autoSizeColumns){
                this.renderRows(dataModel);
                this.autoSizeColumns();
            }else{
                this.updateColumns();
                this.renderRows(dataModel);
            }

            for(var i = 0; i < colCount; i++){
                if(colModel.isHidden(i)){
                    this.hideColumn(i);
                }
            }
            this.updateHeaderSortState();
            return this.bwrap;
        },

        onColumnSplitterMoved : function(splitter, newSize){
            this.grid.colModel.setColumnWidth(splitter.columnIndex, newSize);
            this.grid.fireEvent('columnresize', splitter.columnIndex, newSize);
        },

        appendFooter : function(parentEl){
            return null;
        },

        autoHeight : function(){
            if(this.grid.autoHeight){
                var h = this.getBodyHeight();
                var c = this.grid.container;
                var total = h + (parseInt(this.wrap.offsetTop, 10)||0) +
                        this.footerHeight + c.getBorderWidth('tb') + c.getPadding('tb')
                        + (this.wrap.offsetHeight - this.wrap.clientHeight);
                c.setHeight(total);

            }
        },

        getBodyHeight : function(){
            return this.grid.dataModel.getRowCount() * this.getRowHeight();;
        },

        updateBodyHeight : function(){
            this.getBodyTable().style.height = this.getBodyHeight() + 'px';
            if(this.grid.autoHeight){
                this.autoHeight();
                this.updateWrapHeight();
            }
        }
    };
    YAHOO.ext.grid.GridView.SCROLLBARS_UNDER = 0;
    YAHOO.ext.grid.GridView.SCROLLBARS_OVERLAP = 1;
    YAHOO.ext.grid.GridView.prototype.scrollbarMode = YAHOO.ext.grid.GridView.SCROLLBARS_UNDER;

    YAHOO.ext.grid.GridView.prototype.fitColumnsToContainer = YAHOO.ext.grid.GridView.prototype.fitColumns;

    YAHOO.ext.grid.HeaderController = function(grid){
    	this.grid = grid;
    	this.headers = [];
    };

    YAHOO.ext.grid.HeaderController.prototype = {
    	register : function(header){
    		this.headers.push(header);
    		YAHOO.ext.EventManager.on(header, 'selectstart', this.cancelTextSelection, this, true);
            YAHOO.ext.EventManager.on(header, 'mousedown', this.cancelTextSelection, this, true);
            YAHOO.ext.EventManager.on(header, 'mouseover', this.headerOver, this, true);
            YAHOO.ext.EventManager.on(header, 'mouseout', this.headerOut, this, true);
            YAHOO.ext.EventManager.on(header, 'click', this.headerClick, this, true);
    	},

    	headerClick : function(e){
    	    var grid = this.grid, cm = grid.colModel, dm = grid.dataModel;
    	    grid.stopEditing();
            var header = grid.getHeaderFromChild(e.getTarget());
            var state = dm.getSortState();
            var direction = header.sortDir || 'ASC';
            if(typeof state.column != 'undefined' &&
                     grid.getView().getColumnIndexByDataIndex(state.column) == header.columnIndex){
                direction = (state.direction == 'ASC' ? 'DESC' : 'ASC');
            }
            header.sortDir = direction;
            dm.sort(cm, cm.getDataIndex(header.columnIndex), direction);
        },

        headerOver : function(e){
            var header = this.grid.getHeaderFromChild(e.getTarget());
            YAHOO.util.Dom.addClass(header, 'ygrid-hd-over');
            //YAHOO.ext.util.CSS.applyFirst(header, this.grid.id, '.ygrid-hd-over');
        },

        headerOut : function(e){
            var header = this.grid.getHeaderFromChild(e.getTarget());
            YAHOO.util.Dom.removeClass(header, 'ygrid-hd-over');
            //YAHOO.ext.util.CSS.revertFirst(header, this.grid.id, '.ygrid-hd-over');
        },

        cancelTextSelection : function(e){
        	e.preventDefault();
        }
    };

yui-ext - Copyright © 2006 Jack Slocum. | Yahoo! UI - Copyright © 2006 Yahoo! Inc.
All rights reserved.