T08a menus: menu, items, groups, separators, submenus, check and radio rows, key hints, icons; dropdown, split, overflow and context hosts; overlays pick on key release

src/shell/tests.rs

@@ -0,0 +1,90 @@
+use gpui::{
+    AppContext as _, Context, FocusHandle, InteractiveElement, IntoElement, KeyUpEvent, Keystroke,
+    ParentElement, Render, TestAppContext, VisualTestContext, Window, div, prelude::*, px, size,
+};
+
+use super::{WindowManager, WindowSwitcher};
+use crate::{buttons::Button, primitives::FocusScope, theme::Theme};
+
+struct Blank;
+
+impl Render for Blank {
+    fn render(&mut self, _: &mut Window, _: &mut Context<Self>) -> impl IntoElement {
+        div()
+    }
+}
+
+struct Desk {
+    root: FocusHandle,
+    open: bool,
+    enters_above: usize,
+}
+
+impl Render for Desk {
+    fn render(&mut self, _: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
+        let (opener, closer, above) = (cx.entity(), cx.entity(), cx.entity());
+        let scope = FocusScope::new(&self.root)
+            .size_full()
+            .child(Button::new("opener", "Windows").on_click(move |_, _, cx| {
+                opener.update(cx, |desk, cx| {
+                    desk.open = true;
+                    cx.notify();
+                })
+            }))
+            .when(self.open, |desk| {
+                desk.child(WindowSwitcher::new("switcher", move |_, cx| {
+                    closer.update(cx, |desk, cx| {
+                        desk.open = false;
+                        cx.notify();
+                    })
+                }))
+            });
+        div()
+            .size_full()
+            .on_key_down(move |event, _, cx| {
+                if event.keystroke.key == "enter" {
+                    above.update(cx, |desk, _| desk.enters_above += 1);
+                }
+            })
+            .child(scope)
+    }
+}
+
+fn settle(cx: &mut VisualTestContext) {
+    cx.run_until_parked();
+    cx.update(|window, _| window.refresh());
+    cx.run_until_parked();
+}
+
+fn press(key: &str, cx: &mut VisualTestContext) {
+    cx.simulate_keystrokes(key);
+    settle(cx);
+    cx.simulate_event(KeyUpEvent {
+        keystroke: Keystroke::parse(key).expect("a key"),
+    });
+    settle(cx);
+}
+
+#[gpui::test]
+fn the_switcher_switches_on_release_so_its_opener_stays_shut(cx: &mut TestAppContext) {
+    cx.update(Theme::init);
+    let (desk, cx) = cx.add_window_view(|_, cx| Desk {
+        root: cx.focus_handle(),
+        open: false,
+        enters_above: 0,
+    });
+    cx.update(|_, cx| {
+        WindowManager::open("Notes", size(px(320.0), px(240.0)), cx, |_, cx| {
+            cx.new(|_| Blank)
+        })
+        .expect("a managed window");
+    });
+    settle(cx);
+    cx.update(|window, _| window.focus_next());
+    press("enter", cx);
+    assert!(desk.read_with(cx, |desk, _| desk.open));
+    let above = desk.read_with(cx, |desk, _| desk.enters_above);
+    press("enter", cx);
+    assert!(!desk.read_with(cx, |desk, _| desk.open));
+    assert_eq!(desk.read_with(cx, |desk, _| desk.enters_above), above);
+}