chore: Sync with Relm4 new-approach branch

crates/component-system/src/lib.rs

@@ -1,55 +1,7 @@
 // Copyright 2022 System76 <info@system76.com>
 // SPDX-License-Identifier: MPL-2.0
 
-mod app_runner;
-mod component;
-mod handle;
 mod macros;
 
-use gtk4::prelude::*;
-use tokio::sync::mpsc;
-
-pub use self::app_runner::AppRunner;
-pub use self::component::{Component, ComponentInner, ElmComponent};
-pub use self::handle::{Handle, Registered};
-pub use async_trait::async_trait;
-pub use gtk4 as gtk;
+pub use relm4::*;
 pub use relm4_macros::view;
-
-pub type Sender<T> = mpsc::UnboundedSender<T>;
-pub type Receiver<T> = mpsc::UnboundedReceiver<T>;
-
-/// Provides a convenience function for getting a widget out of a type.
-pub trait Widget<W> {
-    fn widget(&self) -> &W;
-}
-
-pub trait CosmicWidgetExt<W>: Widget<W>
-where
-    W: AsRef<gtk::Widget>,
-{
-    fn attach_size_group(&self, sg: &gtk::SizeGroup) -> &Self {
-        sg.add_widget(self.widget().as_ref());
-        self
-    }
-}
-
-/// Convenience function for forwarding events from a receiver to different sender.
-pub fn forward<I: 'static, O: 'static, F: (Fn(I) -> O) + 'static>(
-    mut receiver: Receiver<I>,
-    sender: Sender<O>,
-    transformer: F,
-) {
-    spawn_local(async move {
-        while let Some(event) = receiver.recv().await {
-            if sender.send(transformer(event)).is_err() {
-                break;
-            }
-        }
-    })
-}
-
-/// Convenience function for spawning tasks on the local executor
-pub fn spawn_local<F: std::future::Future<Output = ()> + 'static>(func: F) {
-    gtk4::glib::MainContext::default().spawn_local(func);
-}