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use gpui::{Context, KeyDownEvent, Window};
use twrite_core::{
HookContext, HookOutcome, KeyCode, KeyEvent, Modifiers, Point as BufferPoint, SearchAction,
Selection,
};
use super::Editor;
impl Editor {
pub(crate) fn handle_key_down(
&mut self,
event: &KeyDownEvent,
window: &mut Window,
cx: &mut Context<Self>,
) {
if let Some(key_event) = crate::input::translate_key_down(event) {
if self.context_menu.is_open() {
let plain = !key_event.modifiers.ctrl
&& !key_event.modifiers.alt
&& !key_event.modifiers.meta;
match &key_event.code {
KeyCode::Escape => {
self.dismiss_context_menu(cx);
return;
}
KeyCode::Up if plain => {
self.move_context_menu_selection(false, cx);
return;
}
KeyCode::Down if plain => {
self.move_context_menu_selection(true, cx);
return;
}
KeyCode::Enter if plain => {
if self.context_menu_selected.is_some() {
self.activate_context_menu_selected(window, cx);
} else {
self.dismiss_context_menu(cx);
}
return;
}
// Any other key dismisses the menu and falls through
// so typing still lands in the buffer.
_ => self.dismiss_context_menu(cx),
}
}
self.dispatch_key(&key_event, Some(window), cx);
}
}
/// Feeds a translated key through the hook chain with full post-processing
/// (selection callbacks, scrolling, effect + search sync, notify).
///
/// Used by [`Self::handle_key_down`] and by synthetic prompt-bar clicks
/// via [`Self::press_search_key`].
pub(crate) fn dispatch_key(
&mut self,
key_event: &KeyEvent,
window: Option<&Window>,
cx: &mut Context<Self>,
) {
self.reset_blink_cursor(cx);
let initial_version = self.buffer.version();
let mut consumed = false;
let mut hook_idx = 0;
while hook_idx < self.hooks.len() {
let mut ctx = HookContext::new(
&mut self.buffer,
&mut self.selection,
&mut self.cursor_style,
&mut self.prompt,
&mut self.pending_effects,
);
let outcome = self.hooks[hook_idx].on_key(&mut ctx, key_event);
if outcome == HookOutcome::Consumed {
consumed = true;
break;
}
hook_idx += 1;
}
if consumed {
self.finish_consumed_action(window, cx, initial_version);
return;
}
if self.prompt.is_open() {
for hook in &mut self.hooks {
hook.on_selection_change(&self.buffer, self.selection.as_ref());
}
self.flush_effects();
self.sync_search_state();
cx.notify();
return;
}
let mut edited = false;
let select = key_event.modifiers.shift;
if key_event.modifiers.ctrl || key_event.modifiers.meta {
// Physical fallbacks from translation are already lowercase, so
// `Char` codes match directly (the old string path lowercased).
match &key_event.code {
KeyCode::Char('z') => {
if key_event.modifiers.shift {
self.buffer.redo();
} else {
self.buffer.undo();
}
self.selection = None;
edited = true;
}
KeyCode::Char('y') => {
self.buffer.redo();
self.selection = None;
edited = true;
}
KeyCode::Char('a') => {
self.selection = Some(Selection::range(0, self.buffer.len_bytes()));
}
KeyCode::Char('c') => {
self.copy(cx);
}
KeyCode::Char('x') => {
edited = self.cut(cx);
}
KeyCode::Char('v') => {
edited = self.paste(cx);
}
KeyCode::Backspace => {
if !self.delete_selection() {
edited = self.buffer.delete_prev_word();
} else {
edited = true;
}
self.selection = None;
}
KeyCode::Delete => {
if !self.delete_selection() {
edited = self.buffer.delete_next_word();
} else {
edited = true;
}
self.selection = None;
}
KeyCode::Left => {
let target = self.buffer.prev_word_offset();
self.move_cursor_to(target, select);
}
KeyCode::Right => {
let target = self.buffer.next_word_offset();
self.move_cursor_to(target, select);
}
KeyCode::Home => {
self.move_cursor_to(0, select);
}
KeyCode::End => {
self.move_cursor_to(self.buffer.len_bytes(), select);
}
KeyCode::Up => {
self.scroll_up(1);
self.flush_effects();
cx.notify();
return;
}
KeyCode::Down => {
self.scroll_down(1);
self.flush_effects();
cx.notify();
return;
}
_ => {}
}
} else {
match &key_event.code {
KeyCode::Backspace => {
if !self.delete_selection() {
self.buffer.backspace();
}
self.selection = None;
edited = true;
}
KeyCode::Delete => {
if !self.delete_selection() {
self.buffer.delete();
}
self.selection = None;
edited = true;
}
KeyCode::Enter => {
self.replace_selection_or_insert("\n");
self.selection = None;
edited = true;
}
KeyCode::Tab => {
self.replace_selection_or_insert(&" ".repeat(self.config.tab_size));
self.selection = None;
edited = true;
}
KeyCode::Char(' ') => {
self.replace_selection_or_insert(" ");
self.selection = None;
edited = true;
}
KeyCode::Left => {
if !select && self.selection.is_some() {
let sel = self.selection.take().unwrap();
self.buffer.set_cursor_offset(sel.byte_range().start);
} else {
let target = if self.buffer.cursor_offset() > 0 {
let char_idx =
self.buffer.text().byte_to_char(self.buffer.cursor_offset());
self.buffer.text().char_to_byte(char_idx - 1)
} else {
0
};
self.move_cursor_to(target, select);
}
}
KeyCode::Right => {
if !select && self.selection.is_some() {
let sel = self.selection.take().unwrap();
self.buffer.set_cursor_offset(sel.byte_range().end);
} else {
let target = if self.buffer.cursor_offset() < self.buffer.len_bytes() {
let char_idx =
self.buffer.text().byte_to_char(self.buffer.cursor_offset());
self.buffer
.text()
.char_to_byte((char_idx + 1).min(self.buffer.text().len_chars()))
} else {
self.buffer.len_bytes()
};
self.move_cursor_to(target, select);
}
}
KeyCode::Up => {
let point = self.buffer.cursor_point();
if point.row > 0 {
let target = self
.buffer
.point_to_offset(BufferPoint::new(point.row - 1, point.column));
self.move_cursor_to(target, select);
} else {
self.move_cursor_to(0, select);
}
}
KeyCode::Down => {
let point = self.buffer.cursor_point();
let total_lines = self.buffer.len_lines();
if point.row + 1 < total_lines {
let target = self
.buffer
.point_to_offset(BufferPoint::new(point.row + 1, point.column));
self.move_cursor_to(target, select);
} else {
self.move_cursor_to(self.buffer.len_bytes(), select);
}
}
KeyCode::Home => {
let target = self.buffer.line_start_offset();
self.move_cursor_to(target, select);
}
KeyCode::End => {
let target = self.buffer.line_end_offset();
self.move_cursor_to(target, select);
}
KeyCode::Char(c)
if !key_event.modifiers.alt
&& !key_event.modifiers.ctrl
&& !key_event.modifiers.meta =>
{
let mut insert_consumed = false;
let mut hook_idx = 0;
while hook_idx < self.hooks.len() {
let mut ctx = HookContext::new(
&mut self.buffer,
&mut self.selection,
&mut self.cursor_style,
&mut self.prompt,
&mut self.pending_effects,
);
if self.hooks[hook_idx].before_insert(&mut ctx, *c) == HookOutcome::Consumed
{
insert_consumed = true;
break;
}
hook_idx += 1;
}
if !insert_consumed {
let mut buf = [0u8; 4];
self.replace_selection_or_insert(c.encode_utf8(&mut buf));
self.selection = None;
edited = true;
}
}
_ => {}
}
}
if edited {
for hook in &mut self.hooks {
hook.after_edit(&mut self.buffer);
}
}
for hook in &mut self.hooks {
hook.on_selection_change(&self.buffer, self.selection.as_ref());
}
self.scroll_to_cursor(window);
self.flush_effects();
self.sync_search_state();
cx.notify();
}
/// Feeds a synthetic key through the hook chain with full post-processing.
///
/// Used by prompt-bar chips and arrow buttons so clicks share the exact
/// keyboard path (e.g. `Alt+C` toggles Match Case, plain `Down`
/// walks to the next match).
pub fn press_search_key(
&mut self,
code: KeyCode,
ctrl: bool,
alt: bool,
shift: bool,
window: Option<&Window>,
cx: &mut Context<Self>,
) {
let key_event = KeyEvent {
code,
modifiers: Modifiers {
ctrl,
alt,
shift,
meta: false,
},
};
self.dispatch_key(&key_event, window, cx);
}
/// Feeds a synthetic search-panel action (prompt-bar clicks) through the
/// hook chain with the same post-processing as consumed keys.
///
/// Pointer chrome cannot produce a [`KeyCode`], so actions travel on
/// [`EditorHook::on_search_action`] instead of through [`KeyEvent`].
pub fn press_search_action(
&mut self,
action: SearchAction,
window: Option<&Window>,
cx: &mut Context<Self>,
) {
self.reset_blink_cursor(cx);
let initial_version = self.buffer.version();
let mut hook_idx = 0;
while hook_idx < self.hooks.len() {
let mut ctx = HookContext::new(
&mut self.buffer,
&mut self.selection,
&mut self.cursor_style,
&mut self.prompt,
&mut self.pending_effects,
);
if self.hooks[hook_idx].on_search_action(&mut ctx, action) == HookOutcome::Consumed {
break;
}
hook_idx += 1;
}
self.finish_consumed_action(window, cx, initial_version);
}
/// Post-processing shared by consumed keys and synthetic actions:
/// selection callbacks, scrolling, effect + search sync, notify.
fn finish_consumed_action(
&mut self,
window: Option<&Window>,
cx: &mut Context<Self>,
initial_version: usize,
) {
if self.buffer.version() != initial_version {
for hook in &mut self.hooks {
hook.after_edit(&mut self.buffer);
}
}
for hook in &mut self.hooks {
hook.on_selection_change(&self.buffer, self.selection.as_ref());
}
self.scroll_to_cursor(window);
self.flush_effects();
self.sync_search_state();
cx.notify();
}
}