flex as实现树的数据递归 系统管理视图会用到的

<?xml version="1.0" encoding="utf-8"?> <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" ?? ??? ??? ??? ?fontFamily="simsun" fontSize="12" ?? ??? ??? ??? ?layout="absolute" creationComplete="init()" width="100%" height="100%"> ?? ?<mx:Script> ?? ??? ?<![CDATA[ ?? ??? ??? ?import mx.collections.ArrayCollection; ?? ??? ??? ?import mx.controls.Alert; ?? ??? ??? ?import mx.rpc.events.ResultEvent; ?? ??? ??? ?[Bindable] ?? ??? ??? ?private var menus:XML; ?? ??? ??? ? ?? ??? ??? ?public function init():void{ ?? ??? ??? ??? ?menu.send(); ?? ??? ??? ??? ?var treeMenus:XML = tree2.dataProvider as XML; ?? ??? ??? ??? ?var modules:String = "1,11,12,4"; ?? ??? ??? ??? ?var ids:Array = modules.split(","); ?? ??? ??? ??? ?//Alert.show(treeData.tree.toString()+"","Test"); ?? ??? ??? ??? ?//不相等就要删除 ?? ??? ??? ??? ?var trees:XMLList = XMLList(treeData.tree); ?? ??? ??? ??? ?tree1.dataProvider = treeData.tree; ?? ??? ??? ??? ?for(var i:int=0;i<ids.length;i++){ ?? ??? ??? ??? ??? ?var str:String = ids[i]; ?? ??? ??? ??? ??? ?isExists(str,trees); ?? ??? ??? ??? ?} ?? ??? ??? ??? ?//trace(treeData.tree); ?? ??? ??? ??? ?delNoVisibleNode(trees); ?? ??? ??? ??? ?trace(trees); ?? ??? ??? ??? ?tree2.dataProvider = trees; ?? ??? ??? ?} ?? ??? ??? ? ?? ??? ??? ?public function isExists(str:String,trees:XMLList):void{ ?? ??? ??? ??? ?//trace(str); ?? ??? ??? ??? ?for each(var t:XML in trees){ ?? ??? ??? ??? ??? ?if(t.@id.toString()==str){ ?? ??? ??? ??? ??? ??? ?t.@visible = true; ?? ??? ??? ??? ??? ?} ?? ??? ??? ??? ??? ?isExists(str,t.tree); ?? ??? ??? ??? ?} ?? ??? ??? ?} ?? ??? ??? ? ?? ??? ??? ?//一定要用索引，而且删除的对象要是XMLList里面的元素，不然会报错，或者不能删除 ?? ??? ??? ?private function delNoVisibleNode(xmllist:XMLList):void{ ?? ??? ??? ??? ?//for each (var item:XML in xmllist) ?? ??? ??? ??? ?for (var i:int=xmllist.length() - 1; i >= 0; i--){ ?? ??? ??? ??? ??? ?var item:XML=xmllist[i]; ?? ??? ??? ??? ??? ?if (item.@visible.toString() != "true" && item != null){ ?? ??? ??? ??? ??? ??? ?delete xmllist[item.childIndex()]; ?? ??? ??? ??? ??? ??? ?//menuByVisibleFlaseXML.appendChild(item); ?? ??? ??? ??? ??? ??? ?//删除符合条件的子节点： delete xml.children()(@type ==? “car” && @color == “red”); ?? ??? ??? ??? ??? ?}else if (item.@visible.toString() == "true"){ ?? ??? ??? ??? ??? ??? ?//有子节点 ?? ??? ??? ??? ??? ??? ?if (item.hasComplexContent()){ ?? ??? ??? ??? ??? ??? ??? ?arguments.callee(item.children()); ?? ??? ??? ??? ??? ??? ?} ?? ??? ??? ??? ??? ?} ?? ??? ??? ??? ?} ?? ??? ??? ?} ?? ??? ??? ? ?? ??? ??? ?private function LoadMenu(event:ResultEvent):void{ ?? ??? ??? ??? ?menus = XML(event.result); ?? ??? ??? ??? ?var results:XMLList = menus.node; ?? ??? ??? ??? ?tree.dataProvider = results; ?? ??? ??? ?} ?? ??? ?]]> ?? ?</mx:Script> ?? ?<mx:XML id="treeData" source="assets/data/TreeData.xml" format="e4x"/> ?? ?<mx:HTTPService url="assets/data/TreeMenus.xml" id="menu" useProxy="false" ?? ??? ??? ??? ??? ?showBusyCursor="true" result="LoadMenu(event)" resultFormat="xml"/> ?? ? ?? ?<mx:HBox width="100%"> ?? ??? ?<mx:VBox width="46%"> ?? ??? ??? ?<mx:Tree id="tree" x="10" y="35" width="218" height="397" labelField="@label" /> ?? ??? ??? ?<mx:Label x="10" y="10" text="Tree Nodes From XML File"/> ?? ??? ?</mx:VBox> ?? ??? ?<mx:VBox> ?? ??? ??? ?<mx:Tree id="tree1" x="10" y="35" width="218" height="397" labelField="@label" /> ?? ??? ?</mx:VBox> ?? ??? ?<mx:VBox width="52%"> ?? ??? ??? ?<mx:Tree id="tree2" x="10" y="35" width="218" height="397" labelField="@label" /> ?? ??? ?</mx:VBox> ?? ?</mx:HBox> </mx:Application>