> I'm trying to do something but keep running into a problem :(
> I am working on a solution to easily create complicated window
> layouts in a large application. The idea is to have a static member
> of each window called "design" which describes the layout of each
> window. I can do this OK, the problem is inheritance. We have a
> base window that we derive all of our windows from. I would like to
> be able to call custom.io.FormReader.read() in the base class I
> want to be able to read the static properties for that class and
> for the descendants aswell.
>
> I can acccess our base class and the superclass returns
> qx.legacy.ui.window.Window but i won't to be able to go the other
> way and return the descendant.
>
> Hope that makes sence, it's all very confusing!
I think you will have to pass the instance class through to the base
function as the links are just one way - from derived class to base class.
A base class can have many derived classes, in different trees of classes.
Therefore it would be impossible to know which leaf to go for if you
don't give some help to the base function.
Something like:
In derived class function:
MyBaseClass.getDesign(this.self)
this.self is set up as the current class. It has a superclass entry which
refers to the parent class. So in the getDesign function, implemented in
your base class, you can just walk the classes gathering up the designs:
getDesign : function(clazz)
{
lDesign = []
while (clazz)
{
lDesign.push[clazz.design];
clazz = clazz.superclass;
}
return lDesign;
}
You will probably have to play with the details in a debugger to see
exactly what works. I've just read through qx.Class to work out how it's
done.
Hugh
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