1use editor::{EditorBlurred, EditorFocused, EditorMode, EditorReleased, Event};
 2use gpui::{AppContext, WindowContext};
 3
 4use crate::{state::Mode, Vim};
 5
 6pub fn init(cx: &mut AppContext) {
 7    cx.subscribe_global(focused).detach();
 8    cx.subscribe_global(blurred).detach();
 9    cx.subscribe_global(released).detach();
10}
11
12fn focused(EditorFocused(editor): &EditorFocused, cx: &mut AppContext) {
13    cx.update_window(editor.window_id(), |cx| {
14        Vim::update(cx, |vim, cx| {
15            vim.update_active_editor(cx, |previously_active_editor, cx| {
16                Vim::unhook_vim_settings(previously_active_editor, cx);
17            });
18
19            vim.active_editor = Some(editor.downgrade());
20            vim.editor_subscription = Some(cx.subscribe(editor, |editor, event, cx| match event {
21                Event::SelectionsChanged { local: true } => {
22                    let editor = editor.read(cx);
23                    if editor.leader_replica_id().is_none() {
24                        let newest_empty = editor.selections.newest::<usize>(cx).is_empty();
25                        local_selections_changed(newest_empty, cx);
26                    }
27                }
28                Event::InputIgnored { text } => {
29                    Vim::active_editor_input_ignored(text.clone(), cx);
30                }
31                _ => {}
32            }));
33
34            if vim.enabled {
35                let editor = editor.read(cx);
36                let editor_mode = editor.mode();
37                let newest_selection_empty = editor.selections.newest::<usize>(cx).is_empty();
38
39                if editor_mode == EditorMode::Full && !newest_selection_empty {
40                    vim.switch_mode(Mode::Visual { line: false }, true, cx);
41                }
42            }
43
44            vim.sync_vim_settings(cx);
45        });
46    });
47}
48
49fn blurred(EditorBlurred(editor): &EditorBlurred, cx: &mut AppContext) {
50    cx.update_window(editor.window_id(), |cx| {
51        Vim::update(cx, |vim, cx| {
52            if let Some(previous_editor) = vim.active_editor.clone() {
53                if previous_editor == editor.clone() {
54                    vim.active_editor = None;
55                }
56            }
57
58            cx.update_window(editor.window_id(), |cx| {
59                editor.update(cx, |editor, cx| Vim::unhook_vim_settings(editor, cx))
60            });
61        });
62    });
63}
64
65fn released(EditorReleased(editor): &EditorReleased, cx: &mut AppContext) {
66    cx.update_window(editor.window_id(), |cx| {
67        cx.update_default_global(|vim: &mut Vim, _| {
68            if let Some(previous_editor) = vim.active_editor.clone() {
69                if previous_editor == editor.clone() {
70                    vim.active_editor = None;
71                }
72            }
73        });
74    });
75}
76
77fn local_selections_changed(newest_empty: bool, cx: &mut WindowContext) {
78    Vim::update(cx, |vim, cx| {
79        if vim.enabled && vim.state.mode == Mode::Normal && !newest_empty {
80            vim.switch_mode(Mode::Visual { line: false }, false, cx)
81        }
82    })
83}