Why not just do something like this:
<mx:Script>
<![CDATA[
[Bindable]
public var numberToDisplay:Number;
private function formatBalance( balance:Number ) :String
{
// return formatted string here
}
]]>
</mx:Script>
<mx:Label id="NumberDisplay" text="Your current balance is
{formatBalance(numberToDisplay)}" />
>
> From: "longhairedsi" <[EMAIL PROTECTED]>
> Date: 2007/03/14 Wed PM 04:30:16 CST
> To: [email protected]
> Subject: [flexcoders] Binding - Fire a function on variable change (noob)
>
>
> I have a custom component with a bindable property. I want a internal
> function to fire everytime this property changes. I was wondering the
> best way to do this was. Do I create a custom event that fires when the
> property changes? Or do I call the function from the property "set"
> method? What would be the best way to achieve this? Here's a simple
> example
>
> <mx:Panel xmlns:mx="http://www.adobe.com/2006/mxml
> <http://www.adobe.com/2006/mxml> "
> creationComplete="formatNumberDisplay()" >
> <mx:Script>
> <![CDATA[
> [Inspectable(defaultValue=10)]
> private var _numberToDisplay:Number = 10;
>
> public function set numberToDisplay(myNumber:Number){
> _numberToDisplay = myNumber
> dispatchEvent(new Event("changeNumberToDisplay"));
> }
>
> [Bindable(event="changeNumberToDisplay")]
> public function get numberToDisplay():Number{
> return _numberToDisplay;
> }
>
> public function formatNumberDisplay(){
> if(_numberToDisplay < 0){
> NumberDisplay.setStyle("color", 0xCC3333)
> }else{
> NumberDisplay.setStyle("color", 0x33CC33)
> }
> }
> ]]>
> </mx:Script><mx:Label id="NumberDisplay" text="Your current balance is
> {numberToDisplay}" />
> </mx:Panel>
>
> I want the "formatNumberDisplay()" function to fire when
> "numberToDisplay" changes. This change already fires the
> "changeNumberToDisplay event", how do I capture that here?
>
> Cheers Si
>
>
>
--
John Mark Hawley
The Nilbog Group
773.968.4980 (cell)
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