1use editor::{EditorBlurred, EditorCreated, EditorFocused, EditorMode, EditorReleased};
 2use gpui::MutableAppContext;
 3
 4use crate::{state::Mode, Vim};
 5
 6pub fn init(cx: &mut MutableAppContext) {
 7    cx.subscribe_global(editor_created).detach();
 8    cx.subscribe_global(editor_focused).detach();
 9    cx.subscribe_global(editor_blurred).detach();
10    cx.subscribe_global(editor_released).detach();
11}
12
13fn editor_created(EditorCreated(editor): &EditorCreated, cx: &mut MutableAppContext) {
14    cx.update_default_global(|vim: &mut Vim, cx| {
15        vim.editors.insert(editor.id(), editor.downgrade());
16        vim.sync_vim_settings(cx);
17    })
18}
19
20fn editor_focused(EditorFocused(editor): &EditorFocused, cx: &mut MutableAppContext) {
21    Vim::update(cx, |vim, cx| {
22        vim.active_editor = Some(editor.downgrade());
23        vim.selection_subscription = Some(cx.subscribe(editor, |editor, event, cx| {
24            if editor.read(cx).leader_replica_id().is_none() {
25                if let editor::Event::SelectionsChanged { local: true } = event {
26                    let newest_empty = editor.read(cx).selections.newest::<usize>(cx).is_empty();
27                    editor_local_selections_changed(newest_empty, cx);
28                }
29            }
30        }));
31
32        if !vim.enabled {
33            return;
34        }
35
36        let editor = editor.read(cx);
37        let editor_mode = editor.mode();
38        let newest_selection_empty = editor.selections.newest::<usize>(cx).is_empty();
39
40        if editor_mode == EditorMode::Full && !newest_selection_empty {
41            vim.switch_mode(Mode::Visual { line: false }, true, cx);
42        }
43    });
44}
45
46fn editor_blurred(EditorBlurred(editor): &EditorBlurred, cx: &mut MutableAppContext) {
47    Vim::update(cx, |vim, cx| {
48        if let Some(previous_editor) = vim.active_editor.clone() {
49            if previous_editor == editor.clone() {
50                vim.active_editor = None;
51            }
52        }
53        vim.sync_vim_settings(cx);
54    })
55}
56
57fn editor_released(EditorReleased(editor): &EditorReleased, cx: &mut MutableAppContext) {
58    cx.update_default_global(|vim: &mut Vim, _| {
59        vim.editors.remove(&editor.id());
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 editor_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}