SwitchSymbolFormatter  - AS3 Flex

<?xml version="1.0" encoding="utf-8"?>
<!-- Simple example to demonstrate SwitchSymbolFormatter. -->
<s:Application 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.formatters.SwitchSymbolFormatter;
            import mx.events.ValidationResultEvent;

            private var vResult:ValidationResultEvent;

            // Event handler to validate and format input.
            private function Format():void {
                vResult = scVal.validate();

                if (vResult.type == ValidationResultEvent.VALID) {
                    var switcher:SwitchSymbolFormatter = new SwitchSymbolFormatter('#');
                    formattedSCNumber.text = switcher.formatValue("Formatted Social Securty number: ###-##-#### ", scNum.text);
                } else {
                    formattedSCNumber.text= "";
                }
            }
        ]]>
    </fx:Script>

    <fx:Declarations>
        <mx:SocialSecurityValidator id="scVal" source="{scNum}" property="text"/>
    </fx:Declarations>

    <s:Panel title="SwitchSymbolFormatter Example"
            width="75%" height="75%"
            horizontalCenter="0" verticalCenter="0">
        <s:VGroup left="10" right="10" top="10" bottom="10">
            <s:Label text="Enter a 9 digit Social Security number with no separator characters:" />
            <s:TextInput id="scNum" text="" maxChars="9" width="50%" />

            <s:Button label="Validate and Format" click="Format();" />
            <s:TextInput id="formattedSCNumber" editable="false" width="75%" />
        </s:VGroup>
    </s:Panel>

</s:Application>