tourdeflexmodules/src/spark/validators/RegExpValidatorExample.mxml

<?xml version="1.0" encoding="utf-8"?>
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  this work for additional information regarding copyright ownership.
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      http://www.apache.org/licenses/LICENSE-2.0

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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">
	
	<fx:Script>
		<![CDATA[
			import mx.events.ValidationResultEvent;
			import mx.validators.*;
			
			// Write the results to the 
			private function handleResult(eventObj:ValidationResultEvent):void {
				if (eventObj.type == ValidationResultEvent.VALID)
				{
					// For valid events, the results Array contains
					// RegExpValidationResult objects.
					var xResult:RegExpValidationResult;
					reResults.text="x";
					for (var i:uint = 0; i < eventObj.results.length; i++)
					{
						xResult = eventObj.results[i];
						reResults.text=reResults.text + xResult.matchedIndex + " " + xResult.matchedString;
					}
				}
				else
				{
					reResults.text="";			
				}		
			}
		]]>
	</fx:Script>
	
	<fx:Declarations>
		<mx:RegExpValidator id="regExpV" 
							source="{regex_text}" property="text" 
							flags="g" expression="{regex.text}" 
							valid="handleResult(event)" invalid="handleResult(event)"
							trigger="{myButton}" triggerEvent="click"/>
	</fx:Declarations>
	
	<s:Panel title="RegExpValidator Example" width="100%" height="100%">
		
		<s:layout>
			<s:VerticalLayout paddingLeft="10" paddingRight="10" 
							  paddingTop="10" paddingBottom="10"/>
		</s:layout>
		
		<s:Label width="100%" color="0x323232" text="Instructions:"/>
		<s:Label width="100%" color="0x323232" text="1. Enter text to search. By default, enter  a string containing the letters ABC in sequence followed by any digit."/>
		<s:Label width="100%" color="0x323232" text="2. Enter the regular expression. By default, enter ABC\d."/>
		<s:Label width="100%" color="0x323232" text="3. Click the Button control to trigger the validation."/>
		<s:Label width="100%" color="0x323232" text="4. The results show the index in the text where the matching pattern begins, and the matching pattern. "/>
		
		<mx:Form>
			<mx:FormItem label="Enter text: ">
				<s:TextInput id="regex_text" text="xxxxABC4xxx" width="100%"/>
			</mx:FormItem>
			
			<mx:FormItem label="Enter regular expression: ">
				<s:TextInput id="regex" text="ABC\d" width="100%"/>
			</mx:FormItem>
			
			<mx:FormItem label="Results: ">
				<s:TextInput id="reResults" width="100%"/>
			</mx:FormItem>
			
			<mx:FormItem >
				<s:Button id="myButton" label="Validate"/>
			</mx:FormItem>
		</mx:Form>
		
	</s:Panel>
	
</s:Module>