docs/source/ColumnSplitDD.html

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   9     <pre class="prettyprint lang-js">/*!
  10  * Ext JS Library 3.2.1
  11  * Copyright(c) 2006-2010 Ext JS, Inc.
  12  * licensing@extjs.com
  13  * http://www.extjs.com/license
  14  */
  15 // private
  16 // This is a support class used internally by the Grid components
  17 Ext.grid.SplitDragZone = Ext.extend(Ext.dd.DDProxy, {
  18     fly: Ext.Element.fly,
  19
  20     constructor : function(grid, hd, hd2){
  21         this.grid = grid;
  22         this.view = grid.getView();
  23         this.proxy = this.view.resizeProxy;
  24         Ext.grid.SplitDragZone.superclass.constructor.call(this, hd,
  25             "gridSplitters" + this.grid.getGridEl().id, {
  26             dragElId : Ext.id(this.proxy.dom), resizeFrame:false
  27         });
  28         this.setHandleElId(Ext.id(hd));
  29         this.setOuterHandleElId(Ext.id(hd2));
  30         this.scroll = false;
  31     },
  32
  33     b4StartDrag : function(x, y){
  34         this.view.headersDisabled = true;
  35         this.proxy.setHeight(this.view.mainWrap.getHeight());
  36         var w = this.cm.getColumnWidth(this.cellIndex);
  37         var minw = Math.max(w-this.grid.minColumnWidth, 0);
  38         this.resetConstraints();
  39         this.setXConstraint(minw, 1000);
  40         this.setYConstraint(0, 0);
  41         this.minX = x - minw;
  42         this.maxX = x + 1000;
  43         this.startPos = x;
  44         Ext.dd.DDProxy.prototype.b4StartDrag.call(this, x, y);
  45     },
  46
  47
  48     handleMouseDown : function(e){
  49         var ev = Ext.EventObject.setEvent(e);
  50         var t = this.fly(ev.getTarget());
  51         if(t.hasClass("x-grid-split")){
  52             this.cellIndex = this.view.getCellIndex(t.dom);
  53             this.split = t.dom;
  54             this.cm = this.grid.colModel;
  55             if(this.cm.isResizable(this.cellIndex) && !this.cm.isFixed(this.cellIndex)){
  56                 Ext.grid.SplitDragZone.superclass.handleMouseDown.apply(this, arguments);
  57             }
  58         }
  59     },
  60
  61     endDrag : function(e){
  62         this.view.headersDisabled = false;
  63         var endX = Math.max(this.minX, Ext.lib.Event.getPageX(e));
  64         var diff = endX - this.startPos;
  65         this.view.onColumnSplitterMoved(this.cellIndex, this.cm.getColumnWidth(this.cellIndex)+diff);
  66     },
  67
  68     autoOffset : function(){
  69         this.setDelta(0,0);
  70     }
  71 });</pre>
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