tourdeflexmodules/src/apache/validators/PostCodeValidatorExample.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"
			   xmlns:a="http://flex.apache.org/ns">
	<s:layout>
		<s:HorizontalLayout verticalAlign="middle" horizontalAlign="center" />
	</s:layout>
	
	<fx:Script>
		<![CDATA[	
			import org.apache.flex.validators.PostCodeValidator;
			
			import mx.controls.Alert;
			
			protected function validatePostCode(event:MouseEvent):void
			{
				if (aust.selected) {
					checkAustralianPostCode(postcode.text);
				}
				else if (uk.selected) {
					checkUKPostCode(postcode.text);
				}
				else if (can.selected) {
					checkCanadianPostCode(postcode.text);
				}
			}
			
			public function checkAustralianPostCode(postcode:String):void {
				validator.formats = ["NNNN"];
			}
				
			public function checkUKPostCode(postcode:String):void {
				validator.formats = ["AN NAA", "ANN NAA", "AAN NAA", "ANA NAA", "AANN NAA", "AANA NAA"];
			}
			
			public function checkCanadianPostCode(postcode:String):void {
				validator.format = "ANA NAN";
			}
		]]>
	</fx:Script>
	
	
	<fx:Declarations>
		<a:PostCodeValidator id="validator" source="{postcode}" property="text" 
					   trigger="{checkPostcode}" triggerEvent="click"
					   invalid="Alert.show('Postcode incorrect format!', 'Postcode')"/>
	</fx:Declarations>
		
	
	<s:Panel title="Postcode Validator Example" width="100%" height="100%">		
		<s:layout>
			<s:VerticalLayout paddingLeft="10" paddingRight="10" paddingTop="10" paddingBottom="10"/>
		</s:layout>
		<s:HGroup verticalAlign="middle">
			<s:Label text="Postcode" />
			<s:TextInput id="postcode" text=""/>
		</s:HGroup>
		<s:HGroup verticalAlign="middle">
			<s:Label text="Country" />
			<s:RadioButton id="aust" label="Australia" selected="true" />	
			<s:RadioButton id="uk" label="UK" />	
			<s:RadioButton id="can" label="Canada" />
		</s:HGroup>
		<s:Button id="checkPostcode" label="Validate Postcode" click="validatePostCode(event)" />
	</s:Panel>
</s:Module>