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<head>
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<title>The source code</title>
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<pre class="prettyprint lang-js">/*!
* Ext JS Library 3.4.0
* Copyright(c) 2006-2011 Sencha Inc.
* licensing@sencha.com
* http://www.sencha.com/license
*/
// private
// This is a support class used internally by the Grid components
Ext.grid.SplitDragZone = Ext.extend(Ext.dd.DDProxy, {
fly: Ext.Element.fly,
constructor : function(grid, hd, hd2){
this.grid = grid;
this.view = grid.getView();
this.proxy = this.view.resizeProxy;
Ext.grid.SplitDragZone.superclass.constructor.call(this, hd,
"gridSplitters" + this.grid.getGridEl().id, {
dragElId : Ext.id(this.proxy.dom), resizeFrame:false
});
this.setHandleElId(Ext.id(hd));
this.setOuterHandleElId(Ext.id(hd2));
this.scroll = false;
},
b4StartDrag : function(x, y){
this.view.headersDisabled = true;
this.proxy.setHeight(this.view.mainWrap.getHeight());
var w = this.cm.getColumnWidth(this.cellIndex);
var minw = Math.max(w-this.grid.minColumnWidth, 0);
this.resetConstraints();
this.setXConstraint(minw, 1000);
this.setYConstraint(0, 0);
this.minX = x - minw;
this.maxX = x + 1000;
this.startPos = x;
Ext.dd.DDProxy.prototype.b4StartDrag.call(this, x, y);
},
handleMouseDown : function(e){
var ev = Ext.EventObject.setEvent(e);
var t = this.fly(ev.getTarget());
if(t.hasClass("x-grid-split")){
this.cellIndex = this.view.getCellIndex(t.dom);
this.split = t.dom;
this.cm = this.grid.colModel;
if(this.cm.isResizable(this.cellIndex) && !this.cm.isFixed(this.cellIndex)){
Ext.grid.SplitDragZone.superclass.handleMouseDown.apply(this, arguments);
}
}
},
endDrag : function(e){
this.view.headersDisabled = false;
var endX = Math.max(this.minX, Ext.lib.Event.getPageX(e));
var diff = endX - this.startPos;
this.view.onColumnSplitterMoved(this.cellIndex, this.cm.getColumnWidth(this.cellIndex)+diff);
},
autoOffset : function(){
this.setDelta(0,0);
}
});</pre>
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