chore: reduce component overhead (#3)

Reviewed-on: #3

crates/layout/tests/dock.rs

@@ -112,9 +112,9 @@ fn drag(visual: &mut VisualTestContext, from: gpui::Point<Pixels>, to: gpui::Poi
 
 fn register(dock: &Entity<DockState>, tags: &[&'static str], cx: &mut TestAppContext) {
     cx.update(|cx| {
-        dock.update(cx, |dock, cx| {
+        dock.update(cx, |dock, _cx| {
             for tag in tags {
-                dock.register_panel(descriptor(tag), cx);
+                dock.register_panel(descriptor(tag));
             }
         });
     });
@@ -492,9 +492,9 @@ fn activating_a_panel_with_a_right_view_opens_the_sidebar() {
     let mut cx = TestAppContext::single();
     let (dock, opened, mut visual) = sidebar_window(&mut cx);
     cx.update(|cx| {
-        dock.update(cx, |dock, cx| {
-            dock.register_panel(descriptor_with_right_sidebar("overview"), cx);
-            dock.register_panel(descriptor("inbox"), cx);
+        dock.update(cx, |dock, _cx| {
+            dock.register_panel(descriptor_with_right_sidebar("overview"));
+            dock.register_panel(descriptor("inbox"));
         });
     });
 
@@ -519,9 +519,9 @@ fn closing_the_displayed_tab_falls_back_to_another_right_view() {
     let mut cx = TestAppContext::single();
     let (dock, opened, mut visual) = sidebar_window(&mut cx);
     cx.update(|cx| {
-        dock.update(cx, |dock, cx| {
-            dock.register_panel(descriptor_with_right_sidebar("overview"), cx);
-            dock.register_panel(descriptor_with_right_sidebar("explore"), cx);
+        dock.update(cx, |dock, _cx| {
+            dock.register_panel(descriptor_with_right_sidebar("overview"));
+            dock.register_panel(descriptor_with_right_sidebar("explore"));
         });
     });
     open(&mut visual, &dock, "overview");

crates/layout/tests/resize_handle.rs

@@ -151,6 +151,28 @@ fn moves_without_a_drag_report_nothing() {
     assert!(deltas.borrow().is_empty());
 }
 
+/// The button may be released outside the window, where no MouseUp is
+/// delivered — the drag must end when a move reports no pressed button.
+#[test]
+fn releasing_outside_the_window_ends_the_drag() {
+    let (_cx, deltas, _resets, mut visual) = handle_window(Axis::Horizontal, false);
+    let start = handle_center(&mut visual);
+
+    visual.simulate_mouse_down(start, MouseButton::Left, Modifiers::default());
+    visual.simulate_event(MouseMoveEvent {
+        position: point(start.x + px(30.), start.y),
+        pressed_button: None,
+        modifiers: Modifiers::default(),
+    });
+    visual.simulate_event(MouseMoveEvent {
+        position: point(start.x + px(60.), start.y),
+        pressed_button: None,
+        modifiers: Modifiers::default(),
+    });
+
+    assert!(deltas.borrow().is_empty(), "the drag outlived its button");
+}
+
 #[test]
 fn arrow_keys_move_the_seam_when_focused() {
     let (_cx, deltas, _resets, mut visual) = handle_window(Axis::Horizontal, false);

crates/layout/tests/window_controls.rs

@@ -74,9 +74,7 @@ fn the_pill_bar_pads_for_traffic_lights_when_it_leads_the_window() {
     let mut cx = TestAppContext::single();
     let (dock, mut visual) = dock_window(false, false, &mut cx);
     cx.update(|cx| {
-        dock.update(cx, |dock, cx| {
-            dock.register_panel(descriptor("overview"), cx)
-        });
+        dock.update(cx, |dock, _cx| dock.register_panel(descriptor("overview")));
     });
     open(&mut visual, &dock, "overview");
 
@@ -87,9 +85,7 @@ fn the_pill_bar_pads_for_traffic_lights_when_it_leads_the_window() {
     let (dock, mut visual) = dock_window(false, true, &mut cx);
     let _ = &dock;
     cx.update(|cx| {
-        dock.update(cx, |dock, cx| {
-            dock.register_panel(descriptor("overview"), cx)
-        });
+        dock.update(cx, |dock, _cx| dock.register_panel(descriptor("overview")));
     });
     open(&mut visual, &dock, "overview");
 
@@ -101,11 +97,11 @@ fn the_pill_bar_pads_for_traffic_lights_when_it_leads_the_window() {
     // The bare bar keeps the standard leading padding; the padded bar clears
     // the traffic lights.
     assert!(
-        bare_inset < px(TRAFFIC_LIGHT_PAD),
+        bare_inset < TRAFFIC_LIGHT_PAD,
         "the bare bar must not reserve the traffic-light pad (bare {bare_inset:?})"
     );
     assert!(
-        padded_inset >= px(TRAFFIC_LIGHT_PAD) - px(1.),
+        padded_inset >= TRAFFIC_LIGHT_PAD - px(1.),
         "the pad must clear the traffic lights (bare {bare_inset:?}, padded {padded_inset:?})"
     );
 }
@@ -115,9 +111,7 @@ fn window_controls_render_only_when_the_flag_is_set() {
     let mut cx = TestAppContext::single();
     let (dock, mut visual) = dock_window(false, false, &mut cx);
     cx.update(|cx| {
-        dock.update(cx, |dock, cx| {
-            dock.register_panel(descriptor("overview"), cx)
-        });
+        dock.update(cx, |dock, _cx| dock.register_panel(descriptor("overview")));
     });
     open(&mut visual, &dock, "overview");
 
@@ -138,9 +132,7 @@ fn the_flag_hosts_the_platform_controls_in_the_bar() {
     let mut cx = TestAppContext::single();
     let (dock, mut visual) = dock_window(true, false, &mut cx);
     cx.update(|cx| {
-        dock.update(cx, |dock, cx| {
-            dock.register_panel(descriptor("overview"), cx)
-        });
+        dock.update(cx, |dock, _cx| dock.register_panel(descriptor("overview")));
     });
     open(&mut visual, &dock, "overview");