Start work on read-only project access for channel guests

Co-authored-by: Conrad <conrad@zed.dev>
Co-authored-by: Mikayla <mikayla@zed.dev>

crates/gpui/src/element.rs

@@ -44,8 +44,9 @@ pub trait IntoElement: Sized {
     }
 
     /// Convert into an element, then draw in the current window at the given origin.
-    /// The provided available space is provided to the layout engine to determine the size of the root element.
-    /// Once the element is drawn, its associated element staet is yielded to the given callback.
+    /// The available space argument is provided to the layout engine to determine the size of the
+    // root element.  Once the element is drawn, its associated element state is yielded to the
+    // given callback.
     fn draw_and_update_state<T, R>(
         self,
         origin: Point<Pixels>,

crates/gpui/src/platform/test/platform.rs

@@ -19,7 +19,7 @@ pub struct TestPlatform {
     background_executor: BackgroundExecutor,
     foreground_executor: ForegroundExecutor,
 
-    active_window: Arc<Mutex<Option<AnyWindowHandle>>>,
+    pub(crate) active_window: Arc<Mutex<Option<AnyWindowHandle>>>,
     active_display: Rc<dyn PlatformDisplay>,
     active_cursor: Mutex<CursorStyle>,
     current_clipboard_item: Mutex<Option<ClipboardItem>>,
@@ -106,7 +106,7 @@ impl Platform for TestPlatform {
     }
 
     fn activate(&self, _ignoring_other_apps: bool) {
-        unimplemented!()
+        //
     }
 
     fn hide(&self) {
@@ -142,6 +142,7 @@ impl Platform for TestPlatform {
         *self.active_window.lock() = Some(handle);
         Box::new(TestWindow::new(
             options,
+            handle,
             self.weak.clone(),
             self.active_display.clone(),
         ))

crates/gpui/src/platform/test/window.rs

@@ -1,7 +1,7 @@
 use crate::{
-    px, AtlasKey, AtlasTextureId, AtlasTile, Pixels, PlatformAtlas, PlatformDisplay,
-    PlatformInputHandler, PlatformWindow, Point, Size, TestPlatform, TileId, WindowAppearance,
-    WindowBounds, WindowOptions,
+    px, AnyWindowHandle, AtlasKey, AtlasTextureId, AtlasTile, Pixels, PlatformAtlas,
+    PlatformDisplay, PlatformInputHandler, PlatformWindow, Point, Size, TestPlatform, TileId,
+    WindowAppearance, WindowBounds, WindowOptions,
 };
 use collections::HashMap;
 use parking_lot::Mutex;
@@ -20,6 +20,7 @@ pub(crate) struct TestWindowHandlers {
 
 pub struct TestWindow {
     pub(crate) bounds: WindowBounds,
+    pub(crate) handle: AnyWindowHandle,
     display: Rc<dyn PlatformDisplay>,
     pub(crate) title: Option<String>,
     pub(crate) edited: bool,
@@ -32,6 +33,7 @@ pub struct TestWindow {
 impl TestWindow {
     pub fn new(
         options: WindowOptions,
+        handle: AnyWindowHandle,
         platform: Weak<TestPlatform>,
         display: Rc<dyn PlatformDisplay>,
     ) -> Self {
@@ -39,6 +41,7 @@ impl TestWindow {
             bounds: options.bounds,
             display,
             platform,
+            handle,
             input_handler: None,
             sprite_atlas: Arc::new(TestAtlas::new()),
             handlers: Default::default(),
@@ -107,7 +110,12 @@ impl PlatformWindow for TestWindow {
     }
 
     fn activate(&self) {
-        unimplemented!()
+        *self
+            .platform
+            .upgrade()
+            .expect("platform dropped")
+            .active_window
+            .lock() = Some(self.handle);
     }
 
     fn set_title(&mut self, title: &str) {