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Code from Flex 4 Documentation "Using Adobe Flex 4".
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<!-- dpcontrols/TreeEvents.mxml -->
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark" xmlns:mx="library://ns.adobe.com/flex/mx">
<s:layout>
<s:VerticalLayout />
</s:layout>
<fx:Script>
import flash.events.*;
import mx.events.*;
import mx.controls.*;
private function changeEvt(event:Event):void {
var theData:String = ""
if (event.currentTarget.selectedItem.@data) {
theData = " Data: " + event.currentTarget.selectedItem.@data;
}
forChange.text = event.currentTarget.selectedItem.@label + theData;
}
private function itemOpenEvt(event:TreeEvent):void {
forOpen.text = event.item.@label;
}
</fx:Script>
<mx:Tree id="XMLtree1" width="150" height="170" labelField="@label"
itemOpen="itemOpenEvt(event);" change="changeEvt(event);">
<mx:XMLListCollection id="MailBox">
<fx:XMLList>
<node label="Mail" data="100">
<node label="Inbox" data="70" />
<node label="Personal Folder" data="10">
<node label="Business" data="2" />
<node label="Demo" data="3" />
<node label="Personal" data="0" isBranch="true" />
<node label="Saved Mail" data="5" />
</node>
<node label="Sent" data="15" />
<node label="Trash" data="5" />
</node>
</fx:XMLList>
</mx:XMLListCollection>
</mx:Tree>
<mx:Form>
<mx:FormItem label="Change Event:">
<mx:Label id="forChange" width="150" />
</mx:FormItem>
<mx:FormItem label="Open Event:">
<mx:Label id="forOpen" width="150" />
</mx:FormItem>
</mx:Form>
</s:Application>
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