what's the correct way to add a package resource (package.properties) bundle from inside a plugin to the UserPreferences in a way that a panel (defined inside the plugin) can access the bundle?
As far as I've seen the plugin's classloader is not registered and therefore not returned from UserPreferences#getResourceClassLoaders(). But adding it to this list does not solve the issue as the used class is FileUserPreferences and this owns a list of classloaders by its own which is initialized only inside updateSupportedLanguages() which is private and not called after all the plugins were loaded.
If there's no way to register a plugin's classloader to resolve resources correctly the attached patch would solve the issue. (Hope that I'm able to attach a file as I do not see any way right now [:-/])
I've seen it but then I can't use SwingTools#getLocalizedLabelText(). If you're aware of this it's ok for me but I would prefer to handle resources in the same way all over the application.
That wouldn't work in the current implementation.
Plug-in class loaders and language libraries class loaders are different and not handled at the same place.