tourdeflexmodules/src/spark/controls/ToggleButtonExample.mxml

<?xml version="1.0" encoding="utf-8"?>
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  this work for additional information regarding copyright ownership.
  The ASF licenses this file to You under the Apache License, Version 2.0
  (the "License"); you may not use this file except in compliance with
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      http://www.apache.org/licenses/LICENSE-2.0

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  distributed under the License is distributed on an "AS IS" BASIS,
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<s:Module xmlns:fx="http://ns.adobe.com/mxml/2009" 
			   xmlns:s="library://ns.adobe.com/flex/spark" 
			   xmlns:mx="library://ns.adobe.com/flex/mx" 
			   currentState="hide">
	

	<fx:Script>
		<![CDATA[
			import mx.collections.ArrayCollection;
			
			[Bindable]
			public var items:ArrayCollection = new ArrayCollection([
				{label:"Medium Pink V-Neck T", itemNum:1932823474, price:"$24.00"}, 
				{label:"Small Red Polo", itemNum:2022144432, price:"$40.00"}, 
				{label:"X-Large Sweatshirt", itemNum:3769034827, price:"$50.00"} ]);

			protected function myBtn_clickHandler(event:MouseEvent):void
			{
				if (showBtn.selected) 
					this.currentState="show";
				else this.currentState="hide";
			}
		]]>
	</fx:Script>

	<s:states> 
		<s:State name="show"/>    
		<s:State name="hide"/> 
	</s:states> 
	
	<s:Panel title="ToggleButton Sample" width="100%" height="100%">
		<s:layout>
			<s:VerticalLayout paddingLeft="10" paddingRight="10" paddingTop="10" paddingBottom="10"/>
		</s:layout>
		
		<s:HGroup>			
			<s:VGroup>
					<s:Label text="The Outfitters Clothing Store" fontSize="18" />
					<s:Label text="Order Number: 904234113441-2342"/>
					<s:VGroup width="80%"  horizontalCenter="0">
						<s:Label text="Purchaser: Anna Thomas"/>
						<s:Label text="Date: 7/20/2009"/>
						<s:Label text="Order Total: $114.00"/>
						<s:ToggleButton id="showBtn" label.hide="Show Details" label.show="Hide Details"
										click="myBtn_clickHandler(event)"/>
					</s:VGroup>
			</s:VGroup>
			<s:HGroup right="50" top="5">
				<s:Panel title="Details" horizontalCenter="0" top="300" width="350" height="170" includeIn="show">
					<mx:DataGrid dataProvider="{items}" width="100%" height="100%"/>
				</s:Panel>
			</s:HGroup>
		</s:HGroup>
		
		<s:Label width="100%"
				 text="Clicking the button toggles it between the up and down states. If you click the button while it is in the up state, it toggles to the down state. You must click
		the button again to toggle it back to the up state."/>
	</s:Panel>	
</s:Module>