如何获取Menu当前选择项的路径

如何获取menu当前选择项的路径？通常情况下，我们需要遍历当前选择节点的父节点。下面是完整代码。

<?xml version="1.0"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml">
  <mx:Script>
    <![CDATA[ 
      import mx.controls.Menu; 

      import mx.events.MenuEvent; 
          
      [Bindable] 
      private var paths:Array; 
          
      private var menubarXML:XML = 
      <menuitems> 
        <menuitem label="File"> 
          <menuitem label="New" data="1-1"/> 
          <menuitem label="Open" data="1-2"/> 
        </menuitem> 
        <menuitem label="Search"> 
          <menuitem label="Search..." data="2-1"/> 
          <menuitem label="File..." data="2-2"/> 
          <menuitem label="Declaration"> 
            <menuitem label="File" data="2-3-1"/> 
            <menuitem label="Project" data="2-3-2"/> 
          <menuitem label="WorkSpace" data="2-3-3"/> 
        </menuitem> 
        <menuitem label="References"> 
          <menuitem label="File" data="2-4-1"/> 
            <menuitem label="Project" data="2-4-2"/> 
            <menuitem label="WorkSpace" data="2-4-3"/> 
          </menuitem> 
        </menuitem> 
        <menuitem type="separator"/> 
        <menuitem label="About" data="3"/> 
      </menuitems>; 

      private function addMenu():void { 
        paths = new Array(); 
        var menu:Menu = Menu.createMenu(null, menubarXML, false); 
        menu.labelField="@label"; 
        var pt:Point = new Point(25, 65); 
        pt = panel.localToGlobal(pt); 
        
        menu.show(pt.x, pt.y); 
        menu.addEventListener(MenuEvent.ITEM_CLICK, itemClickHandler); 

      }         
      private function itemClickHandler(event:MenuEvent):void{ 
        findParent(event.item); 
        function findParent(xml:XML):void{ 
          if(xml.parent()!=null){ 
            findParent(xml.parent()); 
            paths.push(xml.@label); 
          } 
        } 
        lblPath.text = paths.toString(); 
      } 
    ]]>
  </mx:Script>
  <mx:Panel id="panel" title="Menu" paddingTop="10" paddingLeft="10" height="100%" width="100%">
    <mx:Button id="btn" label="Show Menu" click="this.addMenu()" />
    <mx:ApplicationControlBar>
      <mx:Label id="lblPath" />
    </mx:ApplicationControlBar>
  </mx:Panel>
</mx:Application>

核心代码位于itemClickHandler事件侦听函数中，我们这里使用了递归算法。

点击此处查看最终效果。