Re: [Gzz] Asko 2002-03-07 (AbstractBgVob)

[Benja Fallenstein]

Tuomas Lukka wrote:
> > > - Interface Colorable, containing method to clone Vob with
> > >   multiple colors
> > > - Abstract class ColorableVob extends Vob omplements Colorable
> > > - BgVobs will be inherited from ColorableVob 
> >
> > I'd prefer if the ColorableVob was the interface, extending a Vob 
> > interface, to avoid casts (ColorableVobs could be both colorized and 
> > added into a vob scene). Tuomas, can Vob be made an interface?
>
> I'd prefer OTOH to have colorability as an optional extra, so that
> no interface would expect a colorable object but check "can we color this?
> If yes, do".

Ok, but what's the return type of cloneColored() then? With interface 
ColoredVob extends Vob, it would be 'right' for all cases.

Also the case is more general: Vob should be an interface to allow 
multiple inheritance on different sub-interfaces...

- Benja