🚀 go-pugleaf

Tom Giammo wrote:

> [...]
> 
> Once I realized this, I wrote the following general method to fetch the 
> top-level frame of any component:
> 
>     public Frame getEnclosingFrame(Component c) throws NoSuchMethodException 
> {
>         Component p = c;
>         Class fClass = java.awt.Frame.class;
>         while (!fClass.isInstance(p)) {
>             String pName = p.getClass().getName();
>             p.getClass().getMethod("getParent", null);  // throws exception 
> if appropriate
>             p = ((Component) p).getParent();
>         }
>         return (Frame) p;
>     }
> 
> This method worked without any problem to get me to my statusBar component, 
> i.e. :
> 
>             frameMain myFrame = (frameMain)getEnclosingFrame(this);
>             myFrame.statusBar.setText(statusMessage);
 > [...]

It may work, but it's far too clever.

The observer pattern suggested in a sibling post is far
more common an approach to this very common problem.
Reflection is the wrong tool here.


-- 


Paul Furbacher (TeamB)

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