Removing Event Listeners

Question

Hello!
I have a PopUpManager window that fires an event just before closing (not the CloseEvent).
I am listening for that event and handling it in a function.
Q: Is it best practice to remove the listener in the function that handles it or calling PopUpManager.removePopUp on that popup automatically does the "cleaning" as well?
Thank you!

Answer 1

Removing the eventListeners on a popup window is necessary I believe.
In your event handling function, you can remove the event listener by event.target.removeEventListener(..., ...). It doesn't matter that your component is handle by the popUpManager, you'll still have a reference to it.
Example
In main app:
var win:myClass = PopUpManager.createPopUp(this, myClass, true) as myClass;
win.addEventListener("myEvent", myHandler);
private function myHandler(evt:Event):void
     evt.target.removeEventListener("myEvent", myHandler);
In custom myClass:
private function handleSomething(evt:Event):void
                var ev:Event = new Event("myEvent");
                dispatchEvent(ev);
                if (isPopUp)
                    PopUpManager.removePopUp(this as IFlexDisplayObject);
Does this help?
Dany