docs/source/ColumnSplitDD.html

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