Quick and dirty attempt to immediately apply focus change in tests

Doesn't quite work yet

crates/gpui2/src/app.rs

@@ -571,6 +571,7 @@ impl AppContext {
         loop {
             self.release_dropped_entities();
             self.release_dropped_focus_handles();
+
             if let Some(effect) = self.pending_effects.pop_front() {
                 match effect {
                     Effect::Notify { emitter } => {
@@ -610,7 +611,8 @@ impl AppContext {
                     .values()
                     .filter_map(|window| {
                         let window = window.as_ref()?;
-                        window.dirty.then_some(window.handle)
+                        dbg!(window.focus_invalidated);
+                        (window.dirty || window.focus_invalidated).then_some(window.handle)
                     })
                     .collect::<Vec<_>>()
                 {

crates/gpui2/src/window.rs

@@ -243,6 +243,9 @@ pub struct Window {
     pub(crate) dirty: bool,
     activation_observers: SubscriberSet<(), AnyObserver>,
     pub(crate) focus: Option<FocusId>,
+
+    #[cfg(any(test, feature = "test-support"))]
+    pub(crate) focus_invalidated: bool,
 }
 
 pub(crate) struct ElementStateBox {
@@ -381,6 +384,9 @@ impl Window {
             dirty: false,
             activation_observers: SubscriberSet::new(),
             focus: None,
+
+            #[cfg(any(test, feature = "test-support"))]
+            focus_invalidated: false,
         }
     }
 }
@@ -461,6 +467,12 @@ impl<'a> WindowContext<'a> {
             .rendered_frame
             .dispatch_tree
             .clear_pending_keystrokes();
+
+        #[cfg(any(test, feature = "test-support"))]
+        {
+            self.window.focus_invalidated = true;
+        }
+
         self.notify();
     }
 
@@ -1274,13 +1286,15 @@ impl<'a> WindowContext<'a> {
         self.window.root_view = Some(root_view);
 
         let previous_focus_path = self.window.rendered_frame.focus_path();
-
+        mem::swap(&mut self.window.rendered_frame, &mut self.window.next_frame);
-        let window = &mut self.window;
-        mem::swap(&mut window.rendered_frame, &mut window.next_frame);
-
         let current_focus_path = self.window.rendered_frame.focus_path();
 
         if previous_focus_path != current_focus_path {
+            #[cfg(any(test, feature = "test-support"))]
+            {
+                self.window.focus_invalidated = false;
+            }
+
             if !previous_focus_path.is_empty() && current_focus_path.is_empty() {
                 self.window
                     .blur_listeners

crates/project_panel2/src/project_panel.rs

@@ -739,6 +739,7 @@ impl ProjectPanel {
             });
             self.filename_editor.update(cx, |editor, cx| {
                 editor.clear(cx);
+                println!("focusing");
                 editor.focus(cx);
             });
             self.update_visible_entries(Some((worktree_id, NEW_ENTRY_ID)), cx);