Open nodes in the Tree control based on the values of query string parameters : Tree « Components « Flex






Open nodes in the Tree control based on the values of query string parameters

Open nodes in the Tree control based on the values of query string parameters
      
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
    layout="absolute" creationComplete="initApp()">
    <mx:Script>
        
        import mx.collections.XMLListCollection;
        [Bindable]
        private var treeData:XML =
        <root>
            <node label="A">
                <node label="B">
                    <node label="C"/>
                    <node label="D"/>
                </node>
                <node label="E" isBranch="true"/>
                <node label="F" isBranch="true"/>
            </node>
            <node label="G">
                <node label="J" isBranch="true"/>
                <node label="Q" isBranch="true"/>
                <node label="W" >
                   <node label="R"/>
                   <node label="Y"/>
                </node>
            </node>
        </root>;
        private var openSequence:Array = [1,2,3];
        private function initApp():void {
            var nodeList:XMLListCollection = myTree.dataProvider as XMLListCollection;
            var node:XMLList = nodeList.source;
            for(var i:int=0; i < openSequence.length; i++) {
                var j:int = openSequence[i];
                var n:XML = node[j];
                if( n.children() != null ) {
                    myTree.expandItem(n,true,false);
                    node = n.children();
                } else {
                    break;
                }
            }
            if( n != null ) myTree.selectedItem = n;
        }
      
    </mx:Script>
    <mx:Tree id="myTree" y="88" width="221" height="257"
        horizontalCenter="0" dataProvider="{treeData.node}"
        labelField="@label" />
</mx:Application>

   
    
    
    
    
    
  








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