as IdeferredInstance 创建模板

使用IdeferredInstance 创建模板
创建一个模板组件以处理传入的多种类型组件，同时也需要延迟实例化组件以提高启动效率。
相当于组件动态创建
效果截图：

<?xml version="1.0" encoding="utf-8"?>
<mx:VBox xmlns:mx="http://www.adobe.com/2006/mxml" width="400" height="300">
<mx:Script>
<![CDATA[
	import mx.containers.Canvas;
import mx.containers.HBox;
import mx.containers.ViewStack;
import mx.core.UIComponent;
public var header:IDeferredInstance;

private var contextBox:HBox;

[ArrayElementType("mx.core.IDeferredInstance")]
public var headDataRow:Array; 

[ArrayElementType("mx.core.IDeferredInstance")]
public var leftDataRow:Array; 

[ArrayElementType("mx.core.IDeferredInstance")]
public var centerDataRow:Array;

[ArrayElementType("mx.core.IDeferredInstance")]
public var rightDataRow:Array;

[ArrayElementType("mx.core.IDeferredInstance")]
public var bottomDataRow:Array; 

private var layoutVBox:VBox;
public var layoutWidth:int = 0;

public function createDeferredComponents():void {
//	addChild(UIComponent(header.getInstance()));
	layoutVBox = new VBox();
	layoutVBox.setStyle("horizontalGap", layoutWidth);
	layoutVBox.width=this.width;
	layoutVBox.setStyle("verticalGap", layoutWidth);
	layoutVBox.setStyle("verticalScrollPolicy","off");
	layoutVBox.setStyle("horizontalScrollPolicy","off");
	
	contextBox=new HBox();
	contextBox.width=this.width;
	contextBox.height=this.height-50;
	contextBox.setStyle("horizontalGap", layoutWidth);
	contextBox.setStyle("verticalGap", layoutWidth);
	contextBox.setStyle("verticalScrollPolicy","off");
	contextBox.setStyle("horizontalScrollPolicy","off");
	
	if(headDataRow.length > 0){
		var headHBox:HBox = new HBox();
		headHBox.width=this.width;
		headHBox.setStyle("horizontalGap", 0);
		headHBox.setStyle("horizontalGap", 0);
		headHBox.setStyle("backgroundColor", "0xccff00");
		for (var i:int = 0; i < headDataRow.length; i++){
			headHBox.addChild(UIComponent(headDataRow[i].getInstance()));
		}
		layoutVBox.addChild(headHBox);
	}
	
	if(leftDataRow.length > 0){
		var leftHBox:HBox = new HBox();
		leftHBox.width=30;
		leftHBox.height=contextBox.height;
		leftHBox.setStyle("horizontalGap", 0);
		leftHBox.setStyle("verticalGap", 0);
		leftHBox.setStyle("backgroundColor", "red");
		leftHBox.setStyle("verticalScrollPolicy","off");
		leftHBox.setStyle("horizontalScrollPolicy","off");
		for (var i:int = 0; i < leftDataRow.length; i++){
			leftHBox.addChild(UIComponent(leftDataRow[i].getInstance()));
		}
		contextBox.addChild(leftHBox);
	}
	
	if(centerDataRow.length > 0){
		var centerHBox:HBox = new HBox();
		centerHBox.setStyle("horizontalGap", 0);
		centerHBox.setStyle("verticalGap", 0);
			centerHBox.width=this.width-60;
		centerHBox.height=contextBox.height;
		centerHBox.setStyle("backgroundColor", "white");
		centerHBox.setStyle("verticalScrollPolicy","off");
		centerHBox.setStyle("horizontalScrollPolicy","off");
		for (var i:int = 0; i < centerDataRow.length;i++)
		{
			centerHBox.addChild(UIComponent(centerDataRow[i].getInstance()));
		}
		contextBox.addChild(centerHBox);
	}
	
	if(rightDataRow.length > 0){
		var rightHBox:HBox = new HBox();
		rightHBox.setStyle("horizontalGap", 0);
		rightHBox.setStyle("verticalGap", 0);
		rightHBox.width=30;
		rightHBox.height=contextBox.height;
		rightHBox.setStyle("backgroundColor", "red");
		rightHBox.setStyle("verticalScrollPolicy","off");
		rightHBox.setStyle("horizontalScrollPolicy","off");
		for (var i:int = 0; i < rightDataRow.length;i++)
		{
			rightHBox.addChild(UIComponent(rightDataRow[i].getInstance()));
		}
		contextBox.addChild(rightHBox);
	}
	
		
	if(bottomDataRow.length > 0){
		var bottomHBox:HBox = new HBox();
		bottomHBox.setStyle("horizontalGap", 0);
		bottomHBox.setStyle("verticalGap", 0);
		bottomHBox.width=this.width;
		bottomHBox.setStyle("backgroundColor", "black");
		bottomHBox.setStyle("verticalScrollPolicy","off");
		bottomHBox.setStyle("horizontalScrollPolicy","off");
		for (var i:int = 0; i < bottomDataRow.length;i++)
		{
			bottomHBox.addChild(UIComponent(bottomDataRow[i].getInstance()));
		}
	}
		layoutVBox.addChild(contextBox);
		layoutVBox.addChild(bottomHBox);
		this.addChild(layoutVBox);
	}
]]>
</mx:Script>	
</mx:VBox>
mxml code:
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" xmlns:ns1="*">
<mx:Script>
	<![CDATA[
		private function createDeferredInstance():void
		{
			this.deferredInstance.createDeferredComponents();
		}
	]]>
</mx:Script>
<mx:Button label="显示模版" click="createDeferredInstance()" />
<ns1:MyVBox id="deferredInstance" x="132" y="49">
	<ns1:headDataRow>
		<mx:Array>
				<mx:Label  text="head" fontSize="13" />
		</mx:Array>
	</ns1:headDataRow>
	<ns1:leftDataRow>
		<mx:Array>
					<mx:Label  text="left" fontSize="13" />
		</mx:Array>
	</ns1:leftDataRow>
	<ns1:centerDataRow>
		<mx:Array>
					<mx:Label  text="center" fontSize="13" />
		</mx:Array>
	</ns1:centerDataRow>
	<ns1:rightDataRow>
		<mx:Array>
					<mx:Label  text="right" fontSize="13" />
		</mx:Array>
	</ns1:rightDataRow>
	<ns1:bottomDataRow>
			<mx:Label  text="bottom" fontSize="13" />
	</ns1:bottomDataRow>
</ns1:MyVBox>
</mx:Application>