Rename MainThreadPlatform to ForegroundPlatform and fix crash on quit

Co-Authored-By: Max Brunsfeld <maxbrunsfeld@gmail.com>

gpui/src/platform.rs

@@ -27,7 +27,24 @@ use std::{
     sync::Arc,
 };
 
-pub(crate) trait MainThreadPlatform {
+pub trait Platform: Send + Sync {
+    fn dispatcher(&self) -> Arc<dyn Dispatcher>;
+    fn fonts(&self) -> Arc<dyn FontSystem>;
+
+    fn activate(&self, ignoring_other_apps: bool);
+    fn open_window(
+        &self,
+        id: usize,
+        options: WindowOptions,
+        executor: Rc<executor::Foreground>,
+    ) -> Box<dyn Window>;
+    fn key_window_id(&self) -> Option<usize>;
+    fn quit(&self);
+    fn write_to_clipboard(&self, item: ClipboardItem);
+    fn read_from_clipboard(&self) -> Option<ClipboardItem>;
+}
+
+pub(crate) trait ForegroundPlatform {
     fn on_become_active(&self, callback: Box<dyn FnMut()>);
     fn on_resign_active(&self, callback: Box<dyn FnMut()>);
     fn on_event(&self, callback: Box<dyn FnMut(Event) -> bool>);
@@ -48,23 +65,6 @@ pub(crate) trait MainThreadPlatform {
     );
 }
 
-pub trait Platform: Send + Sync {
-    fn dispatcher(&self) -> Arc<dyn Dispatcher>;
-    fn fonts(&self) -> Arc<dyn FontSystem>;
-
-    fn activate(&self, ignoring_other_apps: bool);
-    fn open_window(
-        &self,
-        id: usize,
-        options: WindowOptions,
-        executor: Rc<executor::Foreground>,
-    ) -> Box<dyn Window>;
-    fn key_window_id(&self) -> Option<usize>;
-    fn quit(&self);
-    fn write_to_clipboard(&self, item: ClipboardItem);
-    fn read_from_clipboard(&self) -> Option<ClipboardItem>;
-}
-
 pub trait Dispatcher: Send + Sync {
     fn is_main_thread(&self) -> bool;
     fn run_on_main_thread(&self, task: Runnable);