Currency validators
Posted by preedagrace on June 19, 2009
currency validators
The CurrencyValidator class ensures that a String represents a valid currency expression. It can make sure the input falls within a given range (specified by minValue and maxValue), is non-negative (specified by allowNegative), and does not exceed the specified precision. The CurrencyValidator class correctly validates formatted and unformatted currency expressions, e.g., “$12,345.00″ and “12345″. You can customize the currencySymbol, alignSymbol, thousandsSeparator, and decimalSeparator properties for internationalization.
codings
<?xml version=”1.0″ encoding=”utf-8″?>
<mx:Application xmlns:mx=”http://www.adobe.com/2006/mxml”>
<mx:Script>
<![CDATA[
import mx.events.ValidationResultEvent;
private var vResult:ValidationResultEvent;
private function Format():void {
vResult = numVal.validate();
if (vResult.type==ValidationResultEvent.VALID) {
var temp:Number=Number(priceUS.text);
formattedUSPrice.text= usdFormatter.format(temp);
}
else {
formattedUSPrice.text="";
}
}
]]>
</mx:Script>
<mx:CurrencyFormatter id=”usdFormatter” precision=”2″
currencySymbol=”$” decimalSeparatorFrom=”.”
decimalSeparatorTo=”.” useNegativeSign=”true”
useThousandsSeparator=”true” alignSymbol=”left”/>
<mx:NumberValidator id=”numVal” source=”{priceUS}” property=”text”
allowNegative=”true” domain=”real”/>
<mx:Panel title=”CurrencyFormatter Example” width=”75%” height=”75%”
paddingTop=”10″ paddingLeft=”10″ paddingRight=”10″ paddingBottom=”10″>
<mx:Form>
<mx:FormItem label=”Enter U.S. dollar amount:”>
<mx:TextInput id=”priceUS” text=”" width=”50%”/>
</mx:FormItem>
<mx:FormItem label=”Formatted amount: “>
<mx:TextInput id=”formattedUSPrice” text=”" width=”50%” editable=”false”/>
</mx:FormItem>
<mx:FormItem>
<mx:Button label=”Validate and Format” click=”Format();”/>
</mx:FormItem>
</mx:Form>
</mx:Panel>
</mx:Application>
