Flex问题

< ?xml version = "1.0" encoding = "utf-8"? >
< ! --每个精品软件-- >

<mx:Canvas xmlns:mx = "http://www.adobe.com/2006/mxml"
         width = "950"
         height = "560"
         xmlns:phoneBusinesses = "leo.view.phoneBusinesses.*">
   < mx:Script >
    <![CDATA[
      import mx.events.EffectEvent;


      public static const DESTROYED:String="destroyed";

      private var _myData:Object;

      private var flag:String;

      [Bindable]
      /** 每个精品软件XML数据：【software.xml】.software.Item[index] */
      public function get myData():Object {
        return _myData;
      }

      public function set myData(value:Object):void {
        _myData=value;
      }

      private function closeBtnClicked(event:MouseEvent):void {
        destroy();
      }

      public function destroy():void {
        flag="destroy";
        thisContainer.visible=false;
      }

      private function faded(event:EffectEvent):void {
        if(flag=="show") {
          //
        } else if(flag=="destroy") {
          thisContainer.removeAllChildren();
          this.removeAllChildren();
          dispatchEvent(new Event(DESTROYED));
        }
      }
    ]]>
   </mx:Script>

  <mx:Fade id = "fadeIn"
        duration = "2000"
        alphaFrom = "0"
        alphaTo = "1"/>
  <mx:Fade id = "fadeOut"
        duration = "2000"
        alphaFrom = "1"
        alphaTo = "0"/>

  <mx:Canvas id = "thisContainer"
            visible="false"
            width = "100%"
            height = "100%"
            showEffect = "fadeIn"
            hideEffect = "fadeOut"
            effectEnd = "faded(event)">
    <mx:Canvas id = "bg"
             width = "100%"
             height = "100%"
             backgroundAlpha = "0.5"
             backgroundColor = "0x000000">
       < ! --背景图片-- >
      <mx:Canvas id = "imgBg"
                width = "517"
                height = "529"
                horizontalCenter = "0"
                verticalCenter = "0"
                styleName = "softwareItemContent">
         < ! --精品软件名称-- >
        <mx:Text id = "titleText"
             x = "17"
             y = "7"
             width = "300"
             color = "#000000"
             fontSize = "14"
             text = "{myData.title}"/>
         < ! --参数(左上角)-- >
        <phoneBusinesses:SoftwareItemParams x = "10"
                          y = "40"
                          myData = "{myData}"/>
         < ! --下载到手机(右上角)-- >
        <phoneBusinesses:DownloadToPhone id = "DownloadToPhone"
                         x = "337"
                         y = "39"
                         myData = "{myData}"/>

        <mx:Text x = "20"
             y = "165"
             color = "#000000"
             fontSize = "13"
             text = "应用介绍"/>
         < ! --应用说明(下方)-- >
        <phoneBusinesses:SoftwareItemIntroduction x = "10"
                                y = "190"
                                myData = "{myData}"/>

        <mx:Button id = "closeBtn"
                 right = "15"
                 top = "7"
                 label = "×"
                 click = "closeBtnClicked(event)"
                 color = "#FF0000"
                 fontSize = "12"/>
       </mx:Canvas>
     </mx:Canvas>

   </mx:Canvas>


</mx:Canvas>