Use the framework principal mechanism to load Modules

[hprange]

The Injector initialization can search for modules declared via Wonder's framework principal mechanism.

[alextu]

Our first idea was to iterate over all the framework bundles, take the sharedInstance of their principal class and if they implemented a ModuleProvider interface (with a modules() method), we retrieved the modules from there. But that didn't work because the principal classes are not all available at this point (when InjectableApplication calls getModules())

So for the moment, we've implemented it in each FrameworkPrincipal's finishInitialization method by contributing a list of modules of our base application class :

   @Override
   public void finishInitialization() {
       ModuleRegister moduleRegister = MyApplication.application().getModuleRegister();
       moduleRegister.addModule(new MyModule());
   }

Then in our base application class :

@Override
protected Module[] modules() {
    List<? extends Module> modules = moduleRegister.modules();
    return (Module[]) modules.toArray(new Module[modules.size()]);
}

[hprange]

Thanks for sharing the idea and code. I'll try to address some issues of WOInject after WOWODC.