1use crate::{insert::NormalBefore, Vim, VimModeSetting};
2use editor::{Editor, EditorEvent};
3use gpui::{
4 Action, AppContext, BorrowAppContext, Entity, EntityId, View, ViewContext, WindowContext,
5};
6use settings::{Settings, SettingsStore};
7
8pub fn init(cx: &mut AppContext) {
9 cx.observe_new_views(|_, cx: &mut ViewContext<Editor>| {
10 let editor = cx.view().clone();
11 cx.subscribe(&editor, |_, editor, event: &EditorEvent, cx| match event {
12 EditorEvent::Focused => cx.window_context().defer(|cx| focused(editor, cx)),
13 EditorEvent::Blurred => cx.window_context().defer(|cx| blurred(editor, cx)),
14 _ => {}
15 })
16 .detach();
17
18 let mut enabled = VimModeSetting::get_global(cx).0;
19 cx.observe_global::<SettingsStore>(move |editor, cx| {
20 if VimModeSetting::get_global(cx).0 != enabled {
21 enabled = VimModeSetting::get_global(cx).0;
22 if !enabled {
23 Vim::unhook_vim_settings(editor, cx);
24 }
25 }
26 })
27 .detach();
28
29 let id = cx.view().entity_id();
30 cx.on_release(move |_, _, cx| released(id, cx)).detach();
31 })
32 .detach();
33}
34fn focused(editor: View<Editor>, cx: &mut WindowContext) {
35 Vim::update(cx, |vim, cx| {
36 if !vim.enabled {
37 return;
38 }
39 vim.activate_editor(editor.clone(), cx);
40 });
41}
42
43fn blurred(editor: View<Editor>, cx: &mut WindowContext) {
44 Vim::update(cx, |vim, cx| {
45 if let Some(previous_editor) = vim.active_editor.clone() {
46 vim.stop_recording_immediately(NormalBefore.boxed_clone());
47 if previous_editor
48 .upgrade()
49 .is_some_and(|previous| previous == editor.clone())
50 {
51 vim.sync_vim_settings(cx);
52 vim.clear_operator(cx);
53 }
54 }
55 });
56}
57
58fn released(entity_id: EntityId, cx: &mut AppContext) {
59 cx.update_global(|vim: &mut Vim, _| {
60 if vim
61 .active_editor
62 .as_ref()
63 .is_some_and(|previous| previous.entity_id() == entity_id)
64 {
65 vim.active_editor = None;
66 vim.editor_subscription = None;
67 }
68 vim.editor_states.remove(&entity_id)
69 });
70}
71
72#[cfg(test)]
73mod test {
74 use crate::{test::VimTestContext, Vim};
75 use editor::Editor;
76 use gpui::{Context, Entity, VisualTestContext};
77 use language::{Buffer, BufferId};
78
79 // regression test for blur called with a different active editor
80 #[gpui::test]
81 async fn test_blur_focus(cx: &mut gpui::TestAppContext) {
82 let mut cx = VimTestContext::new(cx, true).await;
83
84 let buffer = cx.new_model(|_| Buffer::new(0, BufferId::new(1).unwrap(), "a = 1\nb = 2\n"));
85 let window2 = cx.add_window(|cx| Editor::for_buffer(buffer, None, cx));
86 let editor2 = cx
87 .update(|cx| {
88 window2.update(cx, |_, cx| {
89 cx.activate_window();
90 cx.focus_self();
91 cx.view().clone()
92 })
93 })
94 .unwrap();
95 cx.run_until_parked();
96
97 cx.update(|cx| {
98 let vim = Vim::read(cx);
99 assert_eq!(
100 vim.active_editor.as_ref().unwrap().entity_id(),
101 editor2.entity_id(),
102 )
103 });
104
105 // no panic when blurring an editor in a different window.
106 cx.update_editor(|editor1, cx| {
107 editor1.handle_blur(cx);
108 });
109 }
110
111 // regression test for focus_in/focus_out being called on window activation
112 #[gpui::test]
113 async fn test_focus_across_windows(cx: &mut gpui::TestAppContext) {
114 let mut cx = VimTestContext::new(cx, true).await;
115
116 let mut cx1 = VisualTestContext::from_window(cx.window, &cx);
117 let editor1 = cx.editor.clone();
118
119 let buffer = cx.new_model(|_| Buffer::new(0, BufferId::new(1).unwrap(), "a = 1\nb = 2\n"));
120 let (editor2, cx2) = cx.add_window_view(|cx| Editor::for_buffer(buffer, None, cx));
121
122 editor2.update(cx2, |_, cx| {
123 cx.focus_self();
124 cx.activate_window();
125 });
126 cx.run_until_parked();
127
128 cx1.update(|cx| {
129 assert_eq!(
130 Vim::read(cx).active_editor.as_ref().unwrap().entity_id(),
131 editor2.entity_id(),
132 )
133 });
134
135 cx1.update(|cx| {
136 cx.activate_window();
137 });
138 cx.run_until_parked();
139
140 cx.update(|cx| {
141 assert_eq!(
142 Vim::read(cx).active_editor.as_ref().unwrap().entity_id(),
143 editor1.entity_id(),
144 )
145 });
146 }
147}