1use editor::{EditorBlurred, EditorFocused, EditorMode, EditorReleased, Event};
 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        vim.editor_subscription = Some(cx.subscribe(editor, |editor, event, cx| match event {
24            Event::SelectionsChanged { local: true } => {
25                let editor = editor.read(cx);
26                if editor.leader_replica_id().is_none() {
27                    let newest_empty = editor.selections.newest::<usize>(cx).is_empty();
28                    local_selections_changed(newest_empty, cx);
29                }
30            }
31            Event::InputIgnored { text } => {
32                Vim::active_editor_input_ignored(text.clone(), cx);
33            }
34            _ => {}
35        }));
36
37        if vim.enabled {
38            let editor = editor.read(cx);
39            let editor_mode = editor.mode();
40            let newest_selection_empty = editor.selections.newest::<usize>(cx).is_empty();
41
42            if editor_mode == EditorMode::Full && !newest_selection_empty {
43                vim.switch_mode(Mode::Visual { line: false }, true, cx);
44            }
45        }
46
47        vim.sync_vim_settings(cx);
48    });
49}
50
51fn blurred(EditorBlurred(editor): &EditorBlurred, cx: &mut MutableAppContext) {
52    Vim::update(cx, |vim, cx| {
53        if let Some(previous_editor) = vim.active_editor.clone() {
54            if previous_editor == editor.clone() {
55                vim.active_editor = None;
56            }
57        }
58        vim.unhook_vim_settings(editor.clone(), cx);
59    })
60}
61
62fn released(EditorReleased(editor): &EditorReleased, cx: &mut MutableAppContext) {
63    cx.update_default_global(|vim: &mut Vim, _| {
64        if let Some(previous_editor) = vim.active_editor.clone() {
65            if previous_editor == editor.clone() {
66                vim.active_editor = None;
67            }
68        }
69    });
70}
71
72fn local_selections_changed(newest_empty: bool, cx: &mut MutableAppContext) {
73    Vim::update(cx, |vim, cx| {
74        if vim.enabled && vim.state.mode == Mode::Normal && !newest_empty {
75            vim.switch_mode(Mode::Visual { line: false }, false, cx)
76        }
77    })
78}