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