Re: [platform-swt-dev] listeners pattern

[Bob Foster <bob@xxxxxxxxxx>]

An even better question: Why isn't there a prominent Unsubscribe option on:

https://dev.eclipse.org/mailman/listinfo/platform-swt-dev

?

Bob Foster

cyberdeth@xxxxxxxxxx wrote:
> How do i unsubscribe from this list ?
>
> On Thu Mar 17  4:37 , Thomas Braun <mail@xxxxxxxxxxxxxxx> sent:
>
>
> > If you do it the second way your class has a public method 
> > paintControl(PaintEvent) which can be called by anyone, but from outside 
> > the class painting should be started by calling redraw().
> > On the other hand it is not wrong that XXX implements PaintListener. I 
> > think it's only bad style because you have a public method which should not 
> > be called.
> >
> > Tom
> >
> > alef-zero@xxxxx wrote:
> >
> > > Hi, can someone explain me why in all examlpes of custom widgets in
> > > SWT I found, there is always sth like :
> > > class XXX extends Canvas {
> > > //
> > > 		addPaintListener(new PaintListener() {
> > > 			public void paintControl(PaintEvent e) {
> > > 				XXX.this.paintControl(e);
> > > 			}
> > > 		});
> > > //
> > > }
> > > Why not :
> > > class XXX extends Canvas implements PaintListener {
> > > //
> > >    addPaintListener(this);
> > > //
> > > }
> > >
> > > Should I avoid using implementing listener interfaces or is it only
> > > populated someone style of writing?
> > >
> > > Thanks,
> > > Albert
> > >
> > >
> > >
> > > _______________________________________________
> > > platform-swt-dev mailing list
> > > platform-swt-dev@xxxxxxxxxxx
> > > http://dev.eclipse.org/mailman/listinfo/platform-swt-dev
>
>
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