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
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________________________________
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");
}
}
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