----- Original Message -----
From: Mike Krotscheck
To: [email protected]
Sent: Tuesday, March 25, 2008 8:24 PM
Subject: RE: [flexcoders] Re: Can a Listener return a value
That's probably because it's pseudocode, rather than real code.
Every event listener is passed an event object, and on that event object a
property called "target" exists that is a back reference to the object that
dispatched the event. You can use that back reference to send a parameter back
to the dispatching object.
Personally, I wouldn't be caught dead using this, because the event
dispatcher should be able to set said parameter itself (Plus it's a recipe for
an infinite dispatch loop), but it certainly answers your question.
Why would the solution (good or bad) be a recipe for an infinite dispatch loop?
Perhaps you consider that there is a binding on the value that might cause the
event to be redispatched - in which case it might happen easily in some code
called elsewhere from the event listener.
I would agree that such a tight coupling is probably unwise.
paul
Michael Krotscheck
Senior Developer
RESOURCE INTERACTIVE
www.resource.com
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------------------------------------------------------------------------------
From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of
lytvynyuk
Sent: Tuesday, March 25, 2008 4:09 PM
To: [email protected]
Subject: [flexcoders] Re: Can a Listener return a value
The following code cannot be even compiled, not work.... What do u meant
there?
> I thought about something like this too.
> So, let's say we have the followig code:
> public function aFunction():XML
> {
> public var publicParameter:XML = new XML;
> addEventListener( Event.SomeEvent, responderEventHandler );
> private function responderEventHandler(event:Event):void
> {
> event.target.publicParameter = someXml;
> }
> return publicParameter;
> }
