Fix dock panels not focusing their contents on toggle

Co-authored-by: Antonio <antonio@zed.dev>

crates/workspace2/src/dock.rs

@@ -346,6 +346,7 @@ impl Dock {
                         })
                         .ok();
                 }
+                // todo!() we do not use this event in the production code (even in zed1), remove it
                 PanelEvent::Activate => {
                     if let Some(ix) = this
                         .panel_entries

crates/workspace2/src/pane.rs

@@ -10,7 +10,7 @@ use gpui::{
     actions, impl_actions, overlay, prelude::*, rems, Action, AnchorCorner, AnyWeakView,
     AppContext, AsyncWindowContext, DismissEvent, Div, EntityId, EventEmitter, FocusHandle,
     Focusable, FocusableView, Model, MouseButton, NavigationDirection, Pixels, Point, PromptLevel,
-    Render, Task, View, ViewContext, VisualContext, WeakView, WindowContext,
+    Render, Subscription, Task, View, ViewContext, VisualContext, WeakView, WindowContext,
 };
 use parking_lot::Mutex;
 use project::{Project, ProjectEntryId, ProjectPath};
@@ -174,6 +174,7 @@ pub struct Pane {
     //     can_drop: Rc<dyn Fn(&DragAndDrop<Workspace>, &WindowContext) -> bool>,
     can_split: bool,
     //     render_tab_bar_buttons: Rc<dyn Fn(&mut Pane, &mut ViewContext<Pane>) -> AnyElement<Pane>>,
+    subscriptions: Vec<Subscription>,
 }
 
 pub struct ItemNavHistory {
@@ -312,10 +313,17 @@ impl Pane {
         // context_menu.update(cx, |menu, _| {
         //     menu.set_position_mode(OverlayPositionMode::Local)
         // });
+        //
+        let focus_handle = cx.focus_handle();
+
+        let subscriptions = vec![
+            cx.on_focus_in(&focus_handle, move |this, cx| this.focus_in(cx)),
+            cx.on_focus_out(&focus_handle, move |this, cx| this.focus_out(cx)),
+        ];
 
         let handle = cx.view().downgrade();
         Self {
-            focus_handle: cx.focus_handle(),
+            focus_handle,
             items: Vec::new(),
             activation_history: Vec::new(),
             was_focused: false,
@@ -402,6 +410,7 @@ impl Pane {
             //         })
             //         .into_any()
             // }),
+            subscriptions,
         }
     }
 
@@ -2062,18 +2071,6 @@ impl Render for Pane {
             .track_focus(&self.focus_handle)
             .size_full()
             .overflow_hidden()
-            .on_focus_in({
-                let this = this.clone();
-                move |event, cx| {
-                    this.update(cx, |this, cx| this.focus_in(cx)).ok();
-                }
-            })
-            .on_focus_out({
-                let this = this.clone();
-                move |event, cx| {
-                    this.update(cx, |this, cx| this.focus_out(cx)).ok();
-                }
-            })
             .on_action(cx.listener(|pane, _: &SplitLeft, cx| pane.split(SplitDirection::Left, cx)))
             .on_action(cx.listener(|pane, _: &SplitUp, cx| pane.split(SplitDirection::Up, cx)))
             .on_action(

crates/workspace2/src/workspace2.rs

@@ -1633,6 +1633,7 @@ impl Workspace {
                             panel.focus_handle(cx).focus(cx);
                             reveal_dock = true;
                         } else {
+                            // todo!()
                             // if panel.is_zoomed(cx) {
                             //     dock.set_open(false, cx);
                             // }