Focus toggled elements when interacting with the sidebars

Also, restore focus on the workspace when there is no active item
on the sidebar that was just toggled.

gpui/src/app.rs

@@ -2857,6 +2857,12 @@ impl Clone for AnyViewHandle {
     }
 }
 
+impl From<&AnyViewHandle> for AnyViewHandle {
+    fn from(handle: &AnyViewHandle) -> Self {
+        handle.clone()
+    }
+}
+
 impl<T: View> From<&ViewHandle<T>> for AnyViewHandle {
     fn from(handle: &ViewHandle<T>) -> Self {
         handle

zed/src/chat_panel.rs

@@ -214,6 +214,10 @@ impl View for ChatPanel {
         .with_style(&theme.chat_panel.container)
         .boxed()
     }
+
+    fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
+        cx.focus(&self.input_editor);
+    }
 }
 
 fn format_timestamp(mut timestamp: OffsetDateTime, mut now: OffsetDateTime) -> String {

zed/src/workspace.rs

@@ -767,6 +767,11 @@ impl Workspace {
             Side::Right => &mut self.right_sidebar,
         };
         sidebar.toggle_item(action.0.item_index);
+        if let Some(active_item) = sidebar.active_item() {
+            cx.focus(active_item);
+        } else {
+            cx.focus_self();
+        }
         cx.notify();
     }
 

zed/src/workspace/sidebar.rs

@@ -49,7 +49,7 @@ impl Sidebar {
         if self.active_item_ix == Some(item_ix) {
             self.active_item_ix = None;
         } else {
-            self.active_item_ix = Some(item_ix)
+            self.active_item_ix = Some(item_ix);
         }
     }