Class CEGUI::ItemEntry: Fire events on selection / deselection. (Maybe selectable mode changed as well?)
Class CEGUI::ScriptWindowHelper
Class CEGUI::WidgetComponent: This is not finished in the slightest! There will be many changes here...
Class CEGUI::WindowFactoryManager: I think we could clean up the mapping stuff a bit. Possibly make it more generic now with the window renderers and all.