1use crate::{insert::NormalBefore, Vim, VimModeSetting};
2use editor::{Editor, EditorEvent};
3use gpui::{Action, AppContext, Entity, EntityId, View, ViewContext, WindowContext};
4use settings::{Settings, SettingsStore};
5
6pub fn init(cx: &mut AppContext) {
7 cx.observe_new_views(|_, cx: &mut ViewContext<Editor>| {
8 let editor = cx.view().clone();
9 cx.subscribe(&editor, |_, editor, event: &EditorEvent, cx| match event {
10 EditorEvent::Focused => cx.window_context().defer(|cx| focused(editor, cx)),
11 EditorEvent::Blurred => cx.window_context().defer(|cx| blurred(editor, cx)),
12 _ => {}
13 })
14 .detach();
15
16 let mut enabled = VimModeSetting::get_global(cx).0;
17 cx.observe_global::<SettingsStore>(move |editor, cx| {
18 if VimModeSetting::get_global(cx).0 != enabled {
19 enabled = VimModeSetting::get_global(cx).0;
20 if !enabled {
21 Vim::unhook_vim_settings(editor, cx);
22 }
23 }
24 })
25 .detach();
26
27 let id = cx.view().entity_id();
28 cx.on_release(move |_, _, cx| released(id, cx)).detach();
29 })
30 .detach();
31}
32
33fn focused(editor: View<Editor>, cx: &mut WindowContext) {
34 Vim::update(cx, |vim, cx| {
35 if !vim.enabled {
36 return;
37 }
38 vim.activate_editor(editor.clone(), cx);
39 });
40}
41
42fn blurred(editor: View<Editor>, cx: &mut WindowContext) {
43 Vim::update(cx, |vim, cx| {
44 if let Some(previous_editor) = vim.active_editor.clone() {
45 vim.stop_recording_immediately(NormalBefore.boxed_clone());
46 if previous_editor
47 .upgrade()
48 .is_some_and(|previous| previous == editor.clone())
49 {
50 vim.sync_vim_settings(cx);
51 vim.clear_operator(cx);
52 }
53 }
54 });
55}
56
57fn released(entity_id: EntityId, cx: &mut AppContext) {
58 cx.update_global(|vim: &mut Vim, _| {
59 if vim
60 .active_editor
61 .as_ref()
62 .is_some_and(|previous| previous.entity_id() == entity_id)
63 {
64 vim.active_editor = None;
65 vim.editor_subscription = None;
66 }
67 vim.editor_states.remove(&entity_id)
68 });
69}
70
71#[cfg(test)]
72mod test {
73 use crate::{test::VimTestContext, Vim};
74 use editor::Editor;
75 use gpui::{Context, Entity, VisualTestContext};
76 use language::{Buffer, BufferId};
77
78 // regression test for blur called with a different active editor
79 #[gpui::test]
80 async fn test_blur_focus(cx: &mut gpui::TestAppContext) {
81 let mut cx = VimTestContext::new(cx, true).await;
82
83 let buffer = cx.new_model(|_| Buffer::new(0, BufferId::new(1).unwrap(), "a = 1\nb = 2\n"));
84 let window2 = cx.add_window(|cx| Editor::for_buffer(buffer, None, cx));
85 let editor2 = cx
86 .update(|cx| {
87 window2.update(cx, |_, cx| {
88 cx.activate_window();
89 cx.focus_self();
90 cx.view().clone()
91 })
92 })
93 .unwrap();
94 cx.run_until_parked();
95
96 cx.update(|cx| {
97 let vim = Vim::read(cx);
98 assert_eq!(
99 vim.active_editor.as_ref().unwrap().entity_id(),
100 editor2.entity_id(),
101 )
102 });
103
104 // no panic when blurring an editor in a different window.
105 cx.update_editor(|editor1, cx| {
106 editor1.handle_blur(cx);
107 });
108 }
109
110 // regression test for focus_in/focus_out being called on window activation
111 #[gpui::test]
112 async fn test_focus_across_windows(cx: &mut gpui::TestAppContext) {
113 let mut cx = VimTestContext::new(cx, true).await;
114
115 let mut cx1 = VisualTestContext::from_window(cx.window, &cx);
116 let editor1 = cx.editor.clone();
117
118 let buffer = cx.new_model(|_| Buffer::new(0, BufferId::new(1).unwrap(), "a = 1\nb = 2\n"));
119 let (editor2, cx2) = cx.add_window_view(|cx| Editor::for_buffer(buffer, None, cx));
120
121 editor2.update(cx2, |_, cx| {
122 cx.focus_self();
123 cx.activate_window();
124 });
125 cx.run_until_parked();
126
127 cx1.update(|cx| {
128 assert_eq!(
129 Vim::read(cx).active_editor.as_ref().unwrap().entity_id(),
130 editor2.entity_id(),
131 )
132 });
133
134 cx1.update(|cx| {
135 cx.activate_window();
136 });
137 cx.run_until_parked();
138
139 cx.update(|cx| {
140 assert_eq!(
141 Vim::read(cx).active_editor.as_ref().unwrap().entity_id(),
142 editor1.entity_id(),
143 )
144 });
145 }
146}