[compiz] solving plugin dependency issues

[David Reveman]

On Mon, 2006-10-09 at 01:05 +0200, Alexandre Mazari wrote:
> Hi List !
> 
> David said :
> > I'm suggesting that we add some way to register and depend on features.
> > E.g. the cube and plane plugins would both register a "largedesktop"
> > feature. zoom plugin could depend on the "largedesktop" feature instead
> > of the cube plugin and it wouldn't be possible to load two plugins that
> > provide the same feature.
> 
> David, what you describe looks a lot like the Eclipse RCP bundle model
> based on OSGi specifications. A very very flexible system :
> 
> First, everything is a plugin and is described
> - by an id
> - a description ans some usual informations
> - a list of required previoulsy loaded plugins

yes, we have these in compiz.

> 
> And now the meal :)
> 
> - a list of extension points defining how other plugins can contribute
> to it being by code, ressources, strings etc... (ex : ext point
> org.freedesktop.compiz.largedesktop must be a desktop handling plugin
> and is unique)
> 
> - a list of contributions (called Extensions) to other plugins
> ( ex : contribute to org.freedesktop.compiz.largedesktop with a class
> named Cube implementing an accordingly interface ILargeDesktop)

yes, if we want to we can add similar things to feature system that just
got added.

> 
> 
> 
> Sadly, most if not all OSGi plugins systems are build around Java, but
> I think it can be a great inspiration for any plugin system like the
> compiz' one.
> 
> (OT : A C or C++ implementation would be a nice fullfeatured
> freedesktop.org project !)
> 
> Happy coding !
> 
> --
> Alexandre Mazari
> Eleve Ingénieur 5eme Année Epitech
> Responsable Technique poly/son (poly-son.pfe.epitech.net)
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-David