tourdeflexmodules/src/mx/formatters/PhoneFormatterExample.mxml

<?xml version="1.0" encoding="utf-8"?>
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      this work for additional information regarding copyright ownership.
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<!-- Simple example to demonstrate PhoneFormatter. -->
<mx:Module xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:mx="library://ns.adobe.com/flex/mx"
				paddingBottom="0" paddingTop="0" paddingLeft="0" paddingRight="0"
				height="100%" width="100%">

     <fx:Script>
        <![CDATA[
                
            import mx.events.ValidationResultEvent;			
            private var vResult:ValidationResultEvent;

            // Event handler to validate and format input.            
            private function Format():void
            {
                vResult = pnVal.validate();
                if (vResult.type==ValidationResultEvent.VALID) {
                    formattedPhone.text= phoneFormatter.format(phone.text);
                }
              
                else {
                    formattedPhone.text= "";
                }
            }
        ]]>
    </fx:Script>

	<fx:Declarations>
	    <mx:PhoneFormatter id="phoneFormatter" 
	        formatString="(###) ###-####" validPatternChars="#-() "/>
	
	    <mx:PhoneNumberValidator id="pnVal" source="{phone}" property="text" 
	            allowedFormatChars=""/>
	</fx:Declarations>

    <mx:Panel title="PhoneFormatter Example" height="100%" width="100%">

        <mx:Form>
            <mx:FormItem label="Enter a 10-digit phone number:">
                <mx:TextInput id="phone" text="" width="75%"/>
            </mx:FormItem>

            <mx:FormItem label="Formatted phone number: ">
                <mx:TextInput id="formattedPhone" text="" width="75%" editable="false"/>
            </mx:FormItem>

            <mx:FormItem>
                <mx:Button label="Validate and Format" click="Format()"/>
            </mx:FormItem>
        </mx:Form>

    </mx:Panel>
</mx:Module>