I have already answered my own question. Polymorphism does not work in that direction. All I need to do is pass in the event as type Event, that is where polymorphism works. It treats my custom event as an Event. Then I can cast the Event to a LoginEvent and use the features of my custom event. Maybe this will help someone else.
Cheers! --- In [email protected], "Nathan Arizona" <[EMAIL PROTECTED]> wrote: > > I am passing in a custom event that extends Event into a class that > implements an interface. I get an incorrect signature and I am > wondering why? Why do I not get the benefit of polymorphism? > > I have an interface as follows: > > package myCom.controller > { > import flash.events.Event; > > public interface ICommand > { > function execute(event:Event):void > } > } > > I have a pseudo abstract class as follows: > package myCom.controller > { > import flash.events.Event; > import myCom.view.events.LoginEvent; > > public class Command implements ICommand > { > > public function execute(event:Event):void > { > } > > } > } > > Here is a LoginCommand that extends the Command Class > > package myCom.controller > { > import flash.events.Event; > import myCom.view.events.LoginEvent; > import myCom.model.DashboardModel; > import mx.rpc.remoting.RemoteObject; > import mx.rpc.events.ResultEvent; > import mx.rpc.events.FaultEvent; > import myCom.model.User; > import com.adobe.crypto.MD5; > > public class LoginCommand extends Command > { > public function LoginCommand() { > > } > > public override function execute(event:LoginEvent):void { > > } > > public function myResult(event:ResultEvent):void { > var temp:User; > temp = User(event.result); > trace("myEvent is done"); > } > > public function resultFault(event:FaultEvent):void { > trace("myeventFault" + event.message.toString()); > } > > } > } > > I get an error saying that I have an incompatible signature because my > execute function is expecting a LoginEvent. The LoginEvent extends > Event. Commands execute signature expects an Event. Why do I not get > the advantage of polymorphism here? > > Thanks for your insight. > > Arizona >
