Flex 3 Custom TreeItemRenderer

CustomTreeItemRenderer.as

package itemrenderer
{
	import flash.events.MouseEvent;
	
	import mx.controls.Button;
	import mx.controls.Image;
	import mx.controls.treeClasses.TreeItemRenderer;
	import mx.controls.treeClasses.TreeListData;

	public class CustomTreeItemRenderer extends TreeItemRenderer
	{
		public var btn:Button;
		public var img1:Image;
		public var img2:Image;
		
		[Embed(source="/images/icons/home/Printer-icon.png")]
		public var img1Class:Class;
		[Embed(source="/images/icons/home/email-icon4.png")]
		public var img2Class:Class;
		
		
		public function CustomTreeItemRenderer()
		{
			super();
		}
		
		override public function set data(value:Object):void{
			if(value != null){
				super.data = value;
			}
		}
		
		override protected function createChildren():void{
			super.createChildren();
			img1 = new Image();
			img1.width=25;
			img1.height=25;
			img1.source=imgPrintClass;
			img1.enabled="true";
			img1.useHandCursor="true";
			img1.buttonMode="true";
			imgPrint.addEventListener(MouseEvent.CLICK, img1_clickHandler);
			
			img2 = new Image();
			img2.width=25;
			img2.height=25;
			img2.source=imgEmailClass;
			img2.enabled="true";
			img2.useHandCursor="true";
			img2.buttonMode="true";
			img2.addEventListener(MouseEvent.CLICK, img2_clickHandler);
			
			btn = new Button();
			btn.useHandCursor="true";
			btn.buttonMode="true";
			btn.setStyle("cornerRadius","0");
			btn.setStyle("fontSize","12");
			btn.setStyle("fontWeight", "bold");
			btn.width=140;
			btn.height=25;
			btn.setStyle("textAlign","center");
			btn.addEventListener(MouseEvent.CLICK, btn_clickHandler);
			
			addChild(img1);
			addChild(img2);
			addChild(btn);
		}
		
		override protected function updateDisplayList(unscaledWidth:Number, unscaledHeight:Number):void{
			super.updateDisplayList(unscaledWidth, unscaledHeight);
			if(super.data){
				var tld:TreeListData = TreeListData(super.listData);
				
				if(tld.hasChildren){
					hideButtons();
				}else{
					showButtons();
				}
				if(img1.visible && img2.visible && btn.visible){
					this.img1.x = super.label.x + 140;
					this.img2.x = this.img1.x + 35;
					this.btn.x = super.label.x -17;
					btn.label=data.name;
				}
			}
			
		}
		
		private function hideButtons():void{
			this.img1.visible=false;
			this.img2.visible=false;
			this.btn.visible=false;
			super.label.visible=true;
		}
		
		private function showButtons():void{
			this.img1.visible=true;
			this.img2.visible=true;
			this.btn.visible=true;
			super.label.visible=false;
		}
		
		protected function img1_clickHandler(event:MouseEvent):void
		{
			
		}
		
		protected function img2_clickHandler(event:MouseEvent):void
		{
			
		}
		
		protected function btne_clickHandler(event:MouseEvent):void
		{
			
		}
	}
}