M3: ⌘G and ⇧⌘G step through matches from the find field (#2669)

The find-step shortcuts sat after the canvas's "egui wants keyboard
input" check, so they did nothing while the find field had the focus
(Enter worked). They now run before it, while a search is open, as in
Acrobat and Preview.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01RUNQSPVXx3dDBabRZHAnjz

crates/ui-egui/src/canvas.rs

@@ -2072,11 +2072,20 @@ pub fn shortcuts(view: &mut DocView, ctx: &egui::Context, speed: crate::scroll_s
     if ctx.input_mut(|i| i.consume_shortcut(&KeyboardShortcut::new(Modifiers::COMMAND, Key::F))) {
         view.open_find();
     }
+    let cmd = |k| KeyboardShortcut::new(Modifiers::COMMAND, k);
+    let pressed = |s: KeyboardShortcut| ctx.input_mut(|i| i.consume_shortcut(&s));
+    // ⌘G / ⇧⌘G step through the matches from the find field too, as in Acrobat and Preview
+    // (#2669): ahead of the text-input check, but only while there is a search to step.
+    if view.find.is_some() {
+        if pressed(KeyboardShortcut::new(Modifiers::COMMAND | Modifiers::SHIFT, Key::G)) {
+            view.find_step(false);
+        } else if pressed(cmd(Key::G)) {
+            view.find_step(true);
+        }
+    }
     if ctx.egui_wants_keyboard_input() {
         return;
     }
-    let cmd = |k| KeyboardShortcut::new(Modifiers::COMMAND, k);
-    let pressed = |s: KeyboardShortcut| ctx.input_mut(|i| i.consume_shortcut(&s));
     // Rotation first: egui matches ⌘+ loosely with respect to Shift.
     if pressed(KeyboardShortcut::new(Modifiers::COMMAND | Modifiers::SHIFT, Key::Plus))
         || pressed(KeyboardShortcut::new(Modifiers::COMMAND | Modifiers::SHIFT, Key::Equals))
@@ -2117,11 +2126,6 @@ pub fn shortcuts(view: &mut DocView, ctx: &egui::Context, speed: crate::scroll_s
         view.fit = Fit::Width;
         view.goto = Some((view.current, 0.0));
     }
-    if pressed(KeyboardShortcut::new(Modifiers::COMMAND | Modifiers::SHIFT, Key::G)) {
-        view.find_step(false);
-    } else if pressed(cmd(Key::G)) {
-        view.find_step(true);
-    }
     if pressed(cmd(Key::OpenBracket)) {
         view.view_history(false);
     }

crates/ui-egui/tests/viewer.rs

@@ -175,6 +175,36 @@ fn find_shortcuts_advance_and_retreat_matches() {
     assert_eq!(h.state().views[0].find.as_ref().unwrap().current, Some((start + n - 1) % n));
 }
 
+/// #2669: ⌘G and ⇧⌘G step through the matches while the find field still has the focus.
+#[test]
+fn find_shortcuts_work_from_the_find_field() {
+    let mut h = harness();
+    h.state_mut().active = Some(0);
+    h.run_steps(2);
+    h.state_mut().views[0].open_find();
+    h.state_mut().views[0].find.as_mut().unwrap().query = "page".into();
+    h.state_mut().views[0].rerun_find();
+    let deadline = std::time::Instant::now() + std::time::Duration::from_secs(20);
+    while std::time::Instant::now() < deadline {
+        h.run_steps(2);
+        std::thread::sleep(std::time::Duration::from_millis(5));
+        if h.state().views[0].find.as_ref().unwrap().matches.len() >= 15 {
+            break;
+        }
+    }
+    let n = h.state().views[0].find.as_ref().unwrap().matches.len();
+    assert_eq!(n, 15);
+    assert!(h.ctx.egui_wants_keyboard_input(), "the find field has the focus");
+    let start = h.state().views[0].find.as_ref().unwrap().current.unwrap();
+    h.key_press_modifiers(egui::Modifiers::COMMAND, egui::Key::G);
+    h.run_steps(2);
+    assert_eq!(h.state().views[0].find.as_ref().unwrap().current, Some((start + 1) % n));
+    h.key_press_modifiers(egui::Modifiers::COMMAND | egui::Modifiers::SHIFT, egui::Key::G);
+    h.run_steps(2);
+    assert_eq!(h.state().views[0].find.as_ref().unwrap().current, Some(start));
+    assert!(h.ctx.egui_wants_keyboard_input(), "and keeps it");
+}
+
 #[test]
 fn marking_while_searching_does_not_jitter_or_reset_search_state() {
     let mut h = harness();