docs/source/ColumnSplitDD.html

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   8     <pre class="prettyprint lang-js">/*!
   9  * Ext JS Library 3.0.3
  10  * Copyright(c) 2006-2009 Ext JS, LLC
  11  * licensing@extjs.com
  12  * http://www.extjs.com/license
  13  */
  14 // private
  15 // This is a support class used internally by the Grid components
  16 Ext.grid.SplitDragZone = function(grid, hd, hd2){
  17     this.grid = grid;
  18     this.view = grid.getView();
  19     this.proxy = this.view.resizeProxy;
  20     Ext.grid.SplitDragZone.superclass.constructor.call(this, hd,
  21         "gridSplitters" + this.grid.getGridEl().id, {
  22         dragElId : Ext.id(this.proxy.dom), resizeFrame:false
  23     });
  24     this.setHandleElId(Ext.id(hd));
  25     this.setOuterHandleElId(Ext.id(hd2));
  26     this.scroll = false;
  27 };
  28 Ext.extend(Ext.grid.SplitDragZone, Ext.dd.DDProxy, {
  29     fly: Ext.Element.fly,
  30
  31     b4StartDrag : function(x, y){
  32         this.view.headersDisabled = true;
  33         this.proxy.setHeight(this.view.mainWrap.getHeight());
  34         var w = this.cm.getColumnWidth(this.cellIndex);
  35         var minw = Math.max(w-this.grid.minColumnWidth, 0);
  36         this.resetConstraints();
  37         this.setXConstraint(minw, 1000);
  38         this.setYConstraint(0, 0);
  39         this.minX = x - minw;
  40         this.maxX = x + 1000;
  41         this.startPos = x;
  42         Ext.dd.DDProxy.prototype.b4StartDrag.call(this, x, y);
  43     },
  44
  45
  46     handleMouseDown : function(e){
  47         var ev = Ext.EventObject.setEvent(e);
  48         var t = this.fly(ev.getTarget());
  49         if(t.hasClass("x-grid-split")){
  50             this.cellIndex = this.view.getCellIndex(t.dom);
  51             this.split = t.dom;
  52             this.cm = this.grid.colModel;
  53             if(this.cm.isResizable(this.cellIndex) && !this.cm.isFixed(this.cellIndex)){
  54                 Ext.grid.SplitDragZone.superclass.handleMouseDown.apply(this, arguments);
  55             }
  56         }
  57     },
  58
  59     endDrag : function(e){
  60         this.view.headersDisabled = false;
  61         var endX = Math.max(this.minX, Ext.lib.Event.getPageX(e));
  62         var diff = endX - this.startPos;
  63         this.view.onColumnSplitterMoved(this.cellIndex, this.cm.getColumnWidth(this.cellIndex)+diff);
  64     },
  65
  66     autoOffset : function(){
  67         this.setDelta(0,0);
  68     }
  69 });</pre>
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