Hi,
I was running into issues with so-called strong typing as well. I
had a variable defined as a number:
var myHourVar:Number=new Number();
I had getter/setter functions that were also strictly typed:
public function set myHour(pHour:Number) {
this.myHourVar=pHour;
}
public function get myHour():Number {
return this.myHourVar;
}
And if I assigned a string to it, it returned a string!!! Anyhow,
that being said, you will really have to make sure you type your output
*again* at the getter function:
public function get myHour():Number {
return Number(this.myHourVar);
}
As for your extended class not working, you could be running into
two problems.
1. You defined 'Viod' as your return (maybe just here)
2. Your method calls are trying to reference methods within your own
class. If you don't have them defined, or defined to do something else,
this obviously won't
work. You should be passing your method calls onto your parent
class like this:
super.move ( x , y );
super.setSize ( w , h );
Hope that helps!
Regards,
Patrick
-----------------------------------------------------
www.baynewmedia.com IRC (
www.dal.net) -> #baynewmedia
-----------------------------------------------------
[quoted text, click to view] Whittaker007 wrote:
>Hi there,
>
> Is there an accepted OO practice for extending built-in classes such as
>MovieClip etc. in AS2 that allows you to add properties and methods to a class
>like you can do with the AS1 prototype object? For example I would like to
>combine the mx.screens.Form.move(x,y) and mx.screens.Form.setSize(w,h) which
>are used in all display type components into a single method like this:
>
> mx.screens.Form.setLocAndSize ( x:Number, y:Number, w:Number, h:Number ) :
>Viod {
> this.move ( x , y );
> this.setSize ( w , h );
> }
>
> myComponent.setLocAndSize ( 10, 10, 300, 200 );
>
> Of course this doesn't work. Interestingly I found that I can still use the
>old AS1 method to do this:
>
> MovieClip.prototype.setLocAndSize = function ( x:Number, y:Number, w:Number,
>h:Number ) : Viod {....}
>
> and it works, but it has the following drawbacks: 1 - The method becomes
>available to all objects that inherit from the MovieClip class, not just screen
>components. 2 - Strong typing is totally ignored (I can use a string as one of
>the parameters and the compiler gives no warning), 3 - prototype is really AS1
>syntax and probably should not be used in AS2 projects.
>
> Anyone know the correct way to do this? And no, making a subclass to extend
>mx.screens.Form is not the answer since the actual components that inherit from
>mx.screens.Form will not inherit from the new subclass.
>
> Thanks in advance...
>
>
