Thanks, your solution worked. If I think about it, I'm puzzled. Just like UIComponent, the IClosable interface doesn't have the isClosed property either. So when I cast it that interface, it should fail but it doesn't.
If that's how interfaces work. Then casting it as IUIComponent interface should have worked too. --- In [email protected], "Mike Krotscheck" <[EMAIL PROTECTED]> wrote: > > UIComponent doesn't have a property called isClosed, therefore your > attempt to access that property on an instance cast to UIComponent will > throw an error. What you need to do is have each class implement an > interface called IClosable or something along those lines, and cast to > that. > > public function checkDoor(c:IClosable):Boolean > { > return c.isClosed; > } > > > Michael Krotscheck > > Senior Developer > > > > RESOURCE INTERACTIVE > > <http://www.resource.com/> www.resource.com <http://www.resource.com/> > > [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> > > > > ________________________________ > > From: [email protected] [mailto:[EMAIL PROTECTED] On > Behalf Of dsds99 > Sent: Tuesday, February 19, 2008 4:54 PM > To: [email protected] > Subject: [flexcoders] Polymorphism....? > > > > I have 2 unrelated classes that extend UIComponent ultimately..;) > and each class implements a boolean property called "isClosed" > > Passing these classes into the function as untyped. > > If I don't cast, it works. Trying to understand why it doesn't work > this way. > > A compile time error occurs in the if statement. But isn't this where > polymorphism kicks in even though I am casting it to a higher class in > the chain. > > public function checkDoor(c:*):void{ > if((c is UIComponent).isClosed == true){ > trace("opened"); > } > } > > > > > > > We support privacy and confidentiality. Please delete this email if it > was received in error. > > What's new :: > Capitalize on the social web | The Open Brand, a new book by Kelly > Mooney and Dr. Nita Rollins, available March 2008 | www.theopenbrand.com >
