// crates/gpui/src/platform.rs trait Platform : ' static { // [... some methods left out to keep this short ...] fn background_executor (& self ) -> BackgroundExecutor ; fn foreground_executor (& self ) -> ForegroundExecutor ; fn text_system (& self ) -> Arc < dyn PlatformTextSystem >; fn run (& self , on_finish_launching : Box < dyn ' static + FnOnce ()>); fn quit (& self ); fn restart (& self ); fn hide (& self ); fn displays (& self ) -> Vec < Rc < dyn PlatformDisplay >>; fn open_window ( & self , handle : AnyWindowHandle , options : WindowParams , ) -> Box < dyn PlatformWindow >; fn window_appearance (& self ) -> WindowAppearance ; fn open_url (& self , url : & str ); fn on_open_urls (& self , callback : Box < dyn FnMut ( Vec < String >)>); fn register_url_scheme (& self , url : & str…