1pub mod mappings;
2
3pub use alacritty_terminal;
4
5mod pty_info;
6pub mod terminal_settings;
7
8use alacritty_terminal::{
9 event::{Event as AlacTermEvent, EventListener, Notify, WindowSize},
10 event_loop::{EventLoop, Msg, Notifier},
11 grid::{Dimensions, Scroll as AlacScroll},
12 index::{Boundary, Column, Direction as AlacDirection, Line, Point as AlacPoint},
13 selection::{Selection, SelectionRange, SelectionType},
14 sync::FairMutex,
15 term::{
16 cell::Cell,
17 search::{Match, RegexIter, RegexSearch},
18 Config, RenderableCursor, TermMode,
19 },
20 tty::{self, setup_env},
21 vte::ansi::{ClearMode, Handler, NamedPrivateMode, PrivateMode, Rgb},
22 Term,
23};
24use anyhow::{bail, Result};
25
26use futures::{
27 channel::mpsc::{unbounded, UnboundedReceiver, UnboundedSender},
28 FutureExt,
29};
30
31use mappings::mouse::{
32 alt_scroll, grid_point, grid_point_and_side, mouse_button_report, mouse_moved_report,
33 scroll_report,
34};
35
36use collections::{HashMap, VecDeque};
37use futures::StreamExt;
38use pty_info::PtyProcessInfo;
39use serde::{Deserialize, Serialize};
40use settings::Settings;
41use smol::channel::{Receiver, Sender};
42use task::TaskId;
43use terminal_settings::{AlternateScroll, Shell, TerminalBlink, TerminalSettings};
44use theme::{ActiveTheme, Theme};
45use util::truncate_and_trailoff;
46
47use std::{
48 cmp::{self, min},
49 fmt::Display,
50 ops::{Deref, Index, RangeInclusive},
51 path::PathBuf,
52 sync::Arc,
53 time::Duration,
54};
55use thiserror::Error;
56
57use gpui::{
58 actions, black, px, AnyWindowHandle, AppContext, Bounds, ClipboardItem, EventEmitter, Hsla,
59 Keystroke, ModelContext, Modifiers, MouseButton, MouseDownEvent, MouseMoveEvent, MouseUpEvent,
60 Pixels, Point, Rgba, ScrollWheelEvent, Size, Task, TouchPhase,
61};
62
63use crate::mappings::{colors::to_alac_rgb, keys::to_esc_str};
64
65actions!(
66 terminal,
67 [
68 Clear,
69 Copy,
70 Paste,
71 ShowCharacterPalette,
72 SearchTest,
73 ScrollLineUp,
74 ScrollLineDown,
75 ScrollPageUp,
76 ScrollPageDown,
77 ScrollToTop,
78 ScrollToBottom,
79 ]
80);
81
82///Scrolling is unbearably sluggish by default. Alacritty supports a configurable
83///Scroll multiplier that is set to 3 by default. This will be removed when I
84///Implement scroll bars.
85#[cfg(target_os = "macos")]
86const SCROLL_MULTIPLIER: f32 = 4.;
87#[cfg(not(target_os = "macos"))]
88const SCROLL_MULTIPLIER: f32 = 1.;
89const MAX_SEARCH_LINES: usize = 100;
90const DEBUG_TERMINAL_WIDTH: Pixels = px(500.);
91const DEBUG_TERMINAL_HEIGHT: Pixels = px(30.);
92const DEBUG_CELL_WIDTH: Pixels = px(5.);
93const DEBUG_LINE_HEIGHT: Pixels = px(5.);
94
95///Upward flowing events, for changing the title and such
96#[derive(Clone, Debug)]
97pub enum Event {
98 TitleChanged,
99 BreadcrumbsChanged,
100 CloseTerminal,
101 Bell,
102 Wakeup,
103 BlinkChanged,
104 SelectionsChanged,
105 NewNavigationTarget(Option<MaybeNavigationTarget>),
106 Open(MaybeNavigationTarget),
107}
108
109#[derive(Clone, Debug)]
110pub struct PathLikeTarget {
111 /// File system path, absolute or relative, existing or not.
112 /// Might have line and column number(s) attached as `file.rs:1:23`
113 pub maybe_path: String,
114 /// Current working directory of the terminal
115 pub terminal_dir: Option<PathBuf>,
116}
117
118/// A string inside terminal, potentially useful as a URI that can be opened.
119#[derive(Clone, Debug)]
120pub enum MaybeNavigationTarget {
121 /// HTTP, git, etc. string determined by the [`URL_REGEX`] regex.
122 Url(String),
123 /// File system path, absolute or relative, existing or not.
124 /// Might have line and column number(s) attached as `file.rs:1:23`
125 PathLike(PathLikeTarget),
126}
127
128#[derive(Clone)]
129enum InternalEvent {
130 ColorRequest(usize, Arc<dyn Fn(Rgb) -> String + Sync + Send + 'static>),
131 Resize(TerminalSize),
132 Clear,
133 // FocusNextMatch,
134 Scroll(AlacScroll),
135 ScrollToAlacPoint(AlacPoint),
136 SetSelection(Option<(Selection, AlacPoint)>),
137 UpdateSelection(Point<Pixels>),
138 // Adjusted mouse position, should open
139 FindHyperlink(Point<Pixels>, bool),
140 Copy,
141}
142
143///A translation struct for Alacritty to communicate with us from their event loop
144#[derive(Clone)]
145pub struct ZedListener(UnboundedSender<AlacTermEvent>);
146
147impl EventListener for ZedListener {
148 fn send_event(&self, event: AlacTermEvent) {
149 self.0.unbounded_send(event).ok();
150 }
151}
152
153pub fn init(cx: &mut AppContext) {
154 TerminalSettings::register(cx);
155}
156
157#[derive(Clone, Copy, Debug, PartialEq, Eq, Serialize, Deserialize)]
158pub struct TerminalSize {
159 pub cell_width: Pixels,
160 pub line_height: Pixels,
161 pub size: Size<Pixels>,
162}
163
164impl TerminalSize {
165 pub fn new(line_height: Pixels, cell_width: Pixels, size: Size<Pixels>) -> Self {
166 TerminalSize {
167 cell_width,
168 line_height,
169 size,
170 }
171 }
172
173 pub fn num_lines(&self) -> usize {
174 (self.size.height / self.line_height).floor() as usize
175 }
176
177 pub fn num_columns(&self) -> usize {
178 (self.size.width / self.cell_width).floor() as usize
179 }
180
181 pub fn height(&self) -> Pixels {
182 self.size.height
183 }
184
185 pub fn width(&self) -> Pixels {
186 self.size.width
187 }
188
189 pub fn cell_width(&self) -> Pixels {
190 self.cell_width
191 }
192
193 pub fn line_height(&self) -> Pixels {
194 self.line_height
195 }
196}
197
198impl Default for TerminalSize {
199 fn default() -> Self {
200 TerminalSize::new(
201 DEBUG_LINE_HEIGHT,
202 DEBUG_CELL_WIDTH,
203 Size {
204 width: DEBUG_TERMINAL_WIDTH,
205 height: DEBUG_TERMINAL_HEIGHT,
206 },
207 )
208 }
209}
210
211impl From<TerminalSize> for WindowSize {
212 fn from(val: TerminalSize) -> Self {
213 WindowSize {
214 num_lines: val.num_lines() as u16,
215 num_cols: val.num_columns() as u16,
216 cell_width: f32::from(val.cell_width()) as u16,
217 cell_height: f32::from(val.line_height()) as u16,
218 }
219 }
220}
221
222impl Dimensions for TerminalSize {
223 /// Note: this is supposed to be for the back buffer's length,
224 /// but we exclusively use it to resize the terminal, which does not
225 /// use this method. We still have to implement it for the trait though,
226 /// hence, this comment.
227 fn total_lines(&self) -> usize {
228 self.screen_lines()
229 }
230
231 fn screen_lines(&self) -> usize {
232 self.num_lines()
233 }
234
235 fn columns(&self) -> usize {
236 self.num_columns()
237 }
238}
239
240#[derive(Error, Debug)]
241pub struct TerminalError {
242 pub directory: Option<PathBuf>,
243 pub shell: Shell,
244 pub source: std::io::Error,
245}
246
247impl TerminalError {
248 pub fn fmt_directory(&self) -> String {
249 self.directory
250 .clone()
251 .map(|path| {
252 match path
253 .into_os_string()
254 .into_string()
255 .map_err(|os_str| format!("<non-utf8 path> {}", os_str.to_string_lossy()))
256 {
257 Ok(s) => s,
258 Err(s) => s,
259 }
260 })
261 .unwrap_or_else(|| {
262 let default_dir =
263 dirs::home_dir().map(|buf| buf.into_os_string().to_string_lossy().to_string());
264 match default_dir {
265 Some(dir) => format!("<none specified, using home directory> {}", dir),
266 None => "<none specified, could not find home directory>".to_string(),
267 }
268 })
269 }
270
271 pub fn shell_to_string(&self) -> String {
272 match &self.shell {
273 Shell::System => "<system shell>".to_string(),
274 Shell::Program(p) => p.to_string(),
275 Shell::WithArguments { program, args } => format!("{} {}", program, args.join(" ")),
276 }
277 }
278
279 pub fn fmt_shell(&self) -> String {
280 match &self.shell {
281 Shell::System => "<system defined shell>".to_string(),
282 Shell::Program(s) => s.to_string(),
283 Shell::WithArguments { program, args } => format!("{} {}", program, args.join(" ")),
284 }
285 }
286}
287
288impl Display for TerminalError {
289 fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
290 let dir_string: String = self.fmt_directory();
291 let shell = self.fmt_shell();
292
293 write!(
294 f,
295 "Working directory: {} Shell command: `{}`, IOError: {}",
296 dir_string, shell, self.source
297 )
298 }
299}
300
301// https://github.com/alacritty/alacritty/blob/cb3a79dbf6472740daca8440d5166c1d4af5029e/extra/man/alacritty.5.scd?plain=1#L207-L213
302const DEFAULT_SCROLL_HISTORY_LINES: usize = 10_000;
303const MAX_SCROLL_HISTORY_LINES: usize = 100_000;
304
305pub struct TerminalBuilder {
306 terminal: Terminal,
307 events_rx: UnboundedReceiver<AlacTermEvent>,
308}
309
310impl TerminalBuilder {
311 #[allow(clippy::too_many_arguments)]
312 pub fn new(
313 working_directory: Option<PathBuf>,
314 task: Option<TaskState>,
315 shell: Shell,
316 mut env: HashMap<String, String>,
317 blink_settings: Option<TerminalBlink>,
318 alternate_scroll: AlternateScroll,
319 max_scroll_history_lines: Option<usize>,
320 window: AnyWindowHandle,
321 completion_tx: Sender<()>,
322 cx: &mut AppContext,
323 ) -> Result<TerminalBuilder> {
324 // TODO: Properly set the current locale,
325 env.entry("LC_ALL".to_string())
326 .or_insert_with(|| "en_US.UTF-8".to_string());
327
328 env.insert("ZED_TERM".to_string(), "true".to_string());
329 env.insert("TERM_PROGRAM".to_string(), "zed".to_string());
330 env.insert(
331 "TERM_PROGRAM_VERSION".to_string(),
332 release_channel::AppVersion::global(cx).to_string(),
333 );
334
335 let pty_options = {
336 let alac_shell = match shell.clone() {
337 Shell::System => None,
338 Shell::Program(program) => {
339 Some(alacritty_terminal::tty::Shell::new(program, Vec::new()))
340 }
341 Shell::WithArguments { program, args } => {
342 Some(alacritty_terminal::tty::Shell::new(program, args))
343 }
344 };
345
346 alacritty_terminal::tty::Options {
347 shell: alac_shell,
348 working_directory: working_directory.clone(),
349 #[cfg(target_os = "linux")]
350 hold: !matches!(shell.clone(), Shell::System),
351 // with hold: true, macOS gets tasks stuck on ctrl-c interrupts periodically
352 #[cfg(not(target_os = "linux"))]
353 hold: false,
354 env: env.into_iter().collect(),
355 }
356 };
357
358 // Setup Alacritty's env
359 setup_env();
360
361 let scrolling_history = if task.is_some() {
362 // Tasks like `cargo build --all` may produce a lot of output, ergo allow maximum scrolling.
363 // After the task finishes, we do not allow appending to that terminal, so small tasks output should not
364 // cause excessive memory usage over time.
365 MAX_SCROLL_HISTORY_LINES
366 } else {
367 max_scroll_history_lines
368 .unwrap_or(DEFAULT_SCROLL_HISTORY_LINES)
369 .min(MAX_SCROLL_HISTORY_LINES)
370 };
371 let config = Config {
372 scrolling_history,
373 ..Config::default()
374 };
375
376 //Spawn a task so the Alacritty EventLoop can communicate with us in a view context
377 //TODO: Remove with a bounded sender which can be dispatched on &self
378 let (events_tx, events_rx) = unbounded();
379 //Set up the terminal...
380 let mut term = Term::new(
381 config,
382 &TerminalSize::default(),
383 ZedListener(events_tx.clone()),
384 );
385
386 //Start off blinking if we need to
387 if let Some(TerminalBlink::On) = blink_settings {
388 term.set_private_mode(PrivateMode::Named(NamedPrivateMode::BlinkingCursor));
389 }
390
391 //Alacritty defaults to alternate scrolling being on, so we just need to turn it off.
392 if let AlternateScroll::Off = alternate_scroll {
393 term.unset_private_mode(PrivateMode::Named(NamedPrivateMode::AlternateScroll));
394 }
395
396 let term = Arc::new(FairMutex::new(term));
397
398 //Setup the pty...
399 let pty = match tty::new(
400 &pty_options,
401 TerminalSize::default().into(),
402 window.window_id().as_u64(),
403 ) {
404 Ok(pty) => pty,
405 Err(error) => {
406 bail!(TerminalError {
407 directory: working_directory,
408 shell,
409 source: error,
410 });
411 }
412 };
413
414 let pty_info = PtyProcessInfo::new(&pty);
415
416 //And connect them together
417 let event_loop = EventLoop::new(
418 term.clone(),
419 ZedListener(events_tx.clone()),
420 pty,
421 pty_options.hold,
422 false,
423 )?;
424
425 //Kick things off
426 let pty_tx = event_loop.channel();
427 let _io_thread = event_loop.spawn(); // DANGER
428
429 let url_regex = RegexSearch::new(r#"(ipfs:|ipns:|magnet:|mailto:|gemini://|gopher://|https://|http://|news:|file://|git://|ssh:|ftp://)[^\u{0000}-\u{001F}\u{007F}-\u{009F}<>"\s{-}\^⟨⟩`]+"#).unwrap();
430 let word_regex = RegexSearch::new(r#"[\$\+\w.\[\]:/\\@\-~]+"#).unwrap();
431
432 let terminal = Terminal {
433 task,
434 pty_tx: Notifier(pty_tx),
435 completion_tx,
436 term,
437 events: VecDeque::with_capacity(10), //Should never get this high.
438 last_content: Default::default(),
439 last_mouse: None,
440 matches: Vec::new(),
441 selection_head: None,
442 pty_info,
443 breadcrumb_text: String::new(),
444 scroll_px: px(0.),
445 last_mouse_position: None,
446 next_link_id: 0,
447 selection_phase: SelectionPhase::Ended,
448 secondary_pressed: false,
449 hovered_word: false,
450 url_regex,
451 word_regex,
452 };
453
454 Ok(TerminalBuilder {
455 terminal,
456 events_rx,
457 })
458 }
459
460 pub fn subscribe(mut self, cx: &mut ModelContext<Terminal>) -> Terminal {
461 //Event loop
462 cx.spawn(|terminal, mut cx| async move {
463 while let Some(event) = self.events_rx.next().await {
464 terminal.update(&mut cx, |terminal, cx| {
465 //Process the first event immediately for lowered latency
466 terminal.process_event(&event, cx);
467 })?;
468
469 'outer: loop {
470 let mut events = Vec::new();
471 let mut timer = cx
472 .background_executor()
473 .timer(Duration::from_millis(4))
474 .fuse();
475 let mut wakeup = false;
476 loop {
477 futures::select_biased! {
478 _ = timer => break,
479 event = self.events_rx.next() => {
480 if let Some(event) = event {
481 if matches!(event, AlacTermEvent::Wakeup) {
482 wakeup = true;
483 } else {
484 events.push(event);
485 }
486
487 if events.len() > 100 {
488 break;
489 }
490 } else {
491 break;
492 }
493 },
494 }
495 }
496
497 if events.is_empty() && !wakeup {
498 smol::future::yield_now().await;
499 break 'outer;
500 }
501
502 terminal.update(&mut cx, |this, cx| {
503 if wakeup {
504 this.process_event(&AlacTermEvent::Wakeup, cx);
505 }
506
507 for event in events {
508 this.process_event(&event, cx);
509 }
510 })?;
511 smol::future::yield_now().await;
512 }
513 }
514
515 anyhow::Ok(())
516 })
517 .detach();
518
519 self.terminal
520 }
521}
522
523#[derive(Debug, Clone, Deserialize, Serialize)]
524pub struct IndexedCell {
525 pub point: AlacPoint,
526 pub cell: Cell,
527}
528
529impl Deref for IndexedCell {
530 type Target = Cell;
531
532 #[inline]
533 fn deref(&self) -> &Cell {
534 &self.cell
535 }
536}
537
538// TODO: Un-pub
539#[derive(Clone)]
540pub struct TerminalContent {
541 pub cells: Vec<IndexedCell>,
542 pub mode: TermMode,
543 pub display_offset: usize,
544 pub selection_text: Option<String>,
545 pub selection: Option<SelectionRange>,
546 pub cursor: RenderableCursor,
547 pub cursor_char: char,
548 pub size: TerminalSize,
549 pub last_hovered_word: Option<HoveredWord>,
550}
551
552#[derive(Clone)]
553pub struct HoveredWord {
554 pub word: String,
555 pub word_match: RangeInclusive<AlacPoint>,
556 pub id: usize,
557}
558
559impl Default for TerminalContent {
560 fn default() -> Self {
561 TerminalContent {
562 cells: Default::default(),
563 mode: Default::default(),
564 display_offset: Default::default(),
565 selection_text: Default::default(),
566 selection: Default::default(),
567 cursor: RenderableCursor {
568 shape: alacritty_terminal::vte::ansi::CursorShape::Block,
569 point: AlacPoint::new(Line(0), Column(0)),
570 },
571 cursor_char: Default::default(),
572 size: Default::default(),
573 last_hovered_word: None,
574 }
575 }
576}
577
578#[derive(PartialEq, Eq)]
579pub enum SelectionPhase {
580 Selecting,
581 Ended,
582}
583
584pub struct Terminal {
585 pty_tx: Notifier,
586 completion_tx: Sender<()>,
587 term: Arc<FairMutex<Term<ZedListener>>>,
588 events: VecDeque<InternalEvent>,
589 /// This is only used for mouse mode cell change detection
590 last_mouse: Option<(AlacPoint, AlacDirection)>,
591 /// This is only used for terminal hovered word checking
592 last_mouse_position: Option<Point<Pixels>>,
593 pub matches: Vec<RangeInclusive<AlacPoint>>,
594 pub last_content: TerminalContent,
595 pub selection_head: Option<AlacPoint>,
596 pub breadcrumb_text: String,
597 pub pty_info: PtyProcessInfo,
598 scroll_px: Pixels,
599 next_link_id: usize,
600 selection_phase: SelectionPhase,
601 secondary_pressed: bool,
602 hovered_word: bool,
603 url_regex: RegexSearch,
604 word_regex: RegexSearch,
605 task: Option<TaskState>,
606}
607
608pub struct TaskState {
609 pub id: TaskId,
610 pub full_label: String,
611 pub label: String,
612 pub command_label: String,
613 pub status: TaskStatus,
614 pub completion_rx: Receiver<()>,
615}
616
617/// A status of the current terminal tab's task.
618#[derive(Debug, Clone, Copy, PartialEq, Eq)]
619pub enum TaskStatus {
620 /// The task had been started, but got cancelled or somehow otherwise it did not
621 /// report its exit code before the terminal event loop was shut down.
622 Unknown,
623 /// The task is started and running currently.
624 Running,
625 /// After the start, the task stopped running and reported its error code back.
626 Completed { success: bool },
627}
628
629impl TaskStatus {
630 fn register_terminal_exit(&mut self) {
631 if self == &Self::Running {
632 *self = Self::Unknown;
633 }
634 }
635
636 fn register_task_exit(&mut self, error_code: i32) {
637 *self = TaskStatus::Completed {
638 success: error_code == 0,
639 };
640 }
641}
642
643impl Terminal {
644 fn process_event(&mut self, event: &AlacTermEvent, cx: &mut ModelContext<Self>) {
645 match event {
646 AlacTermEvent::Title(title) => {
647 self.breadcrumb_text = title.to_string();
648 cx.emit(Event::BreadcrumbsChanged);
649 }
650 AlacTermEvent::ResetTitle => {
651 self.breadcrumb_text = String::new();
652 cx.emit(Event::BreadcrumbsChanged);
653 }
654 AlacTermEvent::ClipboardStore(_, data) => {
655 cx.write_to_clipboard(ClipboardItem::new(data.to_string()))
656 }
657 AlacTermEvent::ClipboardLoad(_, format) => self.write_to_pty(format(
658 &cx.read_from_clipboard()
659 .map(|ci| ci.text().to_string())
660 .unwrap_or_else(|| "".to_string()),
661 )),
662 AlacTermEvent::PtyWrite(out) => self.write_to_pty(out.clone()),
663 AlacTermEvent::TextAreaSizeRequest(format) => {
664 self.write_to_pty(format(self.last_content.size.into()))
665 }
666 AlacTermEvent::CursorBlinkingChange => {
667 cx.emit(Event::BlinkChanged);
668 }
669 AlacTermEvent::Bell => {
670 cx.emit(Event::Bell);
671 }
672 AlacTermEvent::Exit => self.register_task_finished(None, cx),
673 AlacTermEvent::MouseCursorDirty => {
674 //NOOP, Handled in render
675 }
676 AlacTermEvent::Wakeup => {
677 cx.emit(Event::Wakeup);
678
679 if self.pty_info.has_changed() {
680 cx.emit(Event::TitleChanged);
681 }
682 }
683 AlacTermEvent::ColorRequest(idx, fun_ptr) => {
684 self.events
685 .push_back(InternalEvent::ColorRequest(*idx, fun_ptr.clone()));
686 }
687 AlacTermEvent::ChildExit(error_code) => {
688 self.register_task_finished(Some(*error_code), cx);
689 }
690 }
691 }
692
693 pub fn selection_started(&self) -> bool {
694 self.selection_phase == SelectionPhase::Selecting
695 }
696
697 pub fn get_cwd(&self) -> Option<PathBuf> {
698 self.pty_info.current.as_ref().map(|info| info.cwd.clone())
699 }
700
701 ///Takes events from Alacritty and translates them to behavior on this view
702 fn process_terminal_event(
703 &mut self,
704 event: &InternalEvent,
705 term: &mut Term<ZedListener>,
706 cx: &mut ModelContext<Self>,
707 ) {
708 match event {
709 InternalEvent::ColorRequest(index, format) => {
710 let color = term.colors()[*index].unwrap_or_else(|| {
711 to_alac_rgb(get_color_at_index(*index, cx.theme().as_ref()))
712 });
713 self.write_to_pty(format(color))
714 }
715 InternalEvent::Resize(mut new_size) => {
716 new_size.size.height = cmp::max(new_size.line_height, new_size.height());
717 new_size.size.width = cmp::max(new_size.cell_width, new_size.width());
718
719 self.last_content.size = new_size;
720
721 self.pty_tx.0.send(Msg::Resize(new_size.into())).ok();
722
723 term.resize(new_size);
724 }
725 InternalEvent::Clear => {
726 // Clear back buffer
727 term.clear_screen(ClearMode::Saved);
728
729 let cursor = term.grid().cursor.point;
730
731 // Clear the lines above
732 term.grid_mut().reset_region(..cursor.line);
733
734 // Copy the current line up
735 let line = term.grid()[cursor.line][..Column(term.grid().columns())]
736 .iter()
737 .cloned()
738 .enumerate()
739 .collect::<Vec<(usize, Cell)>>();
740
741 for (i, cell) in line {
742 term.grid_mut()[Line(0)][Column(i)] = cell;
743 }
744
745 // Reset the cursor
746 term.grid_mut().cursor.point =
747 AlacPoint::new(Line(0), term.grid_mut().cursor.point.column);
748 let new_cursor = term.grid().cursor.point;
749
750 // Clear the lines below the new cursor
751 if (new_cursor.line.0 as usize) < term.screen_lines() - 1 {
752 term.grid_mut().reset_region((new_cursor.line + 1)..);
753 }
754
755 cx.emit(Event::Wakeup);
756 }
757 InternalEvent::Scroll(scroll) => {
758 term.scroll_display(*scroll);
759 self.refresh_hovered_word();
760 }
761 InternalEvent::SetSelection(selection) => {
762 term.selection = selection.as_ref().map(|(sel, _)| sel.clone());
763
764 #[cfg(target_os = "linux")]
765 if let Some(selection_text) = term.selection_to_string() {
766 cx.write_to_primary(ClipboardItem::new(selection_text));
767 }
768
769 if let Some((_, head)) = selection {
770 self.selection_head = Some(*head);
771 }
772 cx.emit(Event::SelectionsChanged)
773 }
774 InternalEvent::UpdateSelection(position) => {
775 if let Some(mut selection) = term.selection.take() {
776 let (point, side) = grid_point_and_side(
777 *position,
778 self.last_content.size,
779 term.grid().display_offset(),
780 );
781
782 selection.update(point, side);
783 term.selection = Some(selection);
784
785 #[cfg(target_os = "linux")]
786 if let Some(selection_text) = term.selection_to_string() {
787 cx.write_to_primary(ClipboardItem::new(selection_text));
788 }
789
790 self.selection_head = Some(point);
791 cx.emit(Event::SelectionsChanged)
792 }
793 }
794
795 InternalEvent::Copy => {
796 if let Some(txt) = term.selection_to_string() {
797 cx.write_to_clipboard(ClipboardItem::new(txt))
798 }
799 }
800 InternalEvent::ScrollToAlacPoint(point) => {
801 term.scroll_to_point(*point);
802 self.refresh_hovered_word();
803 }
804 InternalEvent::FindHyperlink(position, open) => {
805 let prev_hovered_word = self.last_content.last_hovered_word.take();
806
807 let point = grid_point(
808 *position,
809 self.last_content.size,
810 term.grid().display_offset(),
811 )
812 .grid_clamp(term, Boundary::Grid);
813
814 let link = term.grid().index(point).hyperlink();
815 let found_word = if link.is_some() {
816 let mut min_index = point;
817 loop {
818 let new_min_index = min_index.sub(term, Boundary::Cursor, 1);
819 if new_min_index == min_index {
820 break;
821 } else if term.grid().index(new_min_index).hyperlink() != link {
822 break;
823 } else {
824 min_index = new_min_index
825 }
826 }
827
828 let mut max_index = point;
829 loop {
830 let new_max_index = max_index.add(term, Boundary::Cursor, 1);
831 if new_max_index == max_index {
832 break;
833 } else if term.grid().index(new_max_index).hyperlink() != link {
834 break;
835 } else {
836 max_index = new_max_index
837 }
838 }
839
840 let url = link.unwrap().uri().to_owned();
841 let url_match = min_index..=max_index;
842
843 Some((url, true, url_match))
844 } else if let Some(word_match) = regex_match_at(term, point, &mut self.word_regex) {
845 let maybe_url_or_path =
846 term.bounds_to_string(*word_match.start(), *word_match.end());
847 let original_match = word_match.clone();
848 let (sanitized_match, sanitized_word) =
849 if maybe_url_or_path.starts_with('[') && maybe_url_or_path.ends_with(']') {
850 (
851 Match::new(
852 word_match.start().add(term, Boundary::Cursor, 1),
853 word_match.end().sub(term, Boundary::Cursor, 1),
854 ),
855 maybe_url_or_path[1..maybe_url_or_path.len() - 1].to_owned(),
856 )
857 } else {
858 (word_match, maybe_url_or_path)
859 };
860
861 let is_url = match regex_match_at(term, point, &mut self.url_regex) {
862 Some(url_match) => {
863 // `]` is a valid symbol in the `file://` URL, so the regex match will include it
864 // consider that when ensuring that the URL match is the same as the original word
865 if sanitized_match == original_match {
866 url_match == sanitized_match
867 } else {
868 url_match.start() == sanitized_match.start()
869 && url_match.end() == original_match.end()
870 }
871 }
872 None => false,
873 };
874 Some((sanitized_word, is_url, sanitized_match))
875 } else {
876 None
877 };
878
879 match found_word {
880 Some((maybe_url_or_path, is_url, url_match)) => {
881 if *open {
882 let target = if is_url {
883 MaybeNavigationTarget::Url(maybe_url_or_path)
884 } else {
885 MaybeNavigationTarget::PathLike(PathLikeTarget {
886 maybe_path: maybe_url_or_path,
887 terminal_dir: self.get_cwd(),
888 })
889 };
890 cx.emit(Event::Open(target));
891 } else {
892 self.update_selected_word(
893 prev_hovered_word,
894 url_match,
895 maybe_url_or_path,
896 is_url,
897 cx,
898 );
899 }
900 self.hovered_word = true;
901 }
902 None => {
903 if self.hovered_word {
904 cx.emit(Event::NewNavigationTarget(None));
905 }
906 self.hovered_word = false;
907 }
908 }
909 }
910 }
911 }
912
913 fn update_selected_word(
914 &mut self,
915 prev_word: Option<HoveredWord>,
916 word_match: RangeInclusive<AlacPoint>,
917 word: String,
918 is_url: bool,
919 cx: &mut ModelContext<Self>,
920 ) {
921 if let Some(prev_word) = prev_word {
922 if prev_word.word == word && prev_word.word_match == word_match {
923 self.last_content.last_hovered_word = Some(HoveredWord {
924 word,
925 word_match,
926 id: prev_word.id,
927 });
928 return;
929 }
930 }
931
932 self.last_content.last_hovered_word = Some(HoveredWord {
933 word: word.clone(),
934 word_match,
935 id: self.next_link_id(),
936 });
937 let navigation_target = if is_url {
938 MaybeNavigationTarget::Url(word)
939 } else {
940 MaybeNavigationTarget::PathLike(PathLikeTarget {
941 maybe_path: word,
942 terminal_dir: self.get_cwd(),
943 })
944 };
945 cx.emit(Event::NewNavigationTarget(Some(navigation_target)));
946 }
947
948 fn next_link_id(&mut self) -> usize {
949 let res = self.next_link_id;
950 self.next_link_id = self.next_link_id.wrapping_add(1);
951 res
952 }
953
954 pub fn last_content(&self) -> &TerminalContent {
955 &self.last_content
956 }
957
958 pub fn total_lines(&self) -> usize {
959 let term = self.term.clone();
960 let terminal = term.lock_unfair();
961 terminal.total_lines()
962 }
963
964 pub fn viewport_lines(&self) -> usize {
965 let term = self.term.clone();
966 let terminal = term.lock_unfair();
967 terminal.screen_lines()
968 }
969
970 //To test:
971 //- Activate match on terminal (scrolling and selection)
972 //- Editor search snapping behavior
973
974 pub fn activate_match(&mut self, index: usize) {
975 if let Some(search_match) = self.matches.get(index).cloned() {
976 self.set_selection(Some((make_selection(&search_match), *search_match.end())));
977
978 self.events
979 .push_back(InternalEvent::ScrollToAlacPoint(*search_match.start()));
980 }
981 }
982
983 pub fn select_matches(&mut self, matches: &[RangeInclusive<AlacPoint>]) {
984 let matches_to_select = self
985 .matches
986 .iter()
987 .filter(|self_match| matches.contains(self_match))
988 .cloned()
989 .collect::<Vec<_>>();
990 for match_to_select in matches_to_select {
991 self.set_selection(Some((
992 make_selection(&match_to_select),
993 *match_to_select.end(),
994 )));
995 }
996 }
997
998 pub fn select_all(&mut self) {
999 let term = self.term.lock();
1000 let start = AlacPoint::new(term.topmost_line(), Column(0));
1001 let end = AlacPoint::new(term.bottommost_line(), term.last_column());
1002 drop(term);
1003 self.set_selection(Some((make_selection(&(start..=end)), end)));
1004 }
1005
1006 fn set_selection(&mut self, selection: Option<(Selection, AlacPoint)>) {
1007 self.events
1008 .push_back(InternalEvent::SetSelection(selection));
1009 }
1010
1011 pub fn copy(&mut self) {
1012 self.events.push_back(InternalEvent::Copy);
1013 }
1014
1015 pub fn clear(&mut self) {
1016 self.events.push_back(InternalEvent::Clear)
1017 }
1018
1019 pub fn scroll_line_up(&mut self) {
1020 self.events
1021 .push_back(InternalEvent::Scroll(AlacScroll::Delta(1)));
1022 }
1023
1024 pub fn scroll_up_by(&mut self, lines: usize) {
1025 self.events
1026 .push_back(InternalEvent::Scroll(AlacScroll::Delta(lines as i32)));
1027 }
1028
1029 pub fn scroll_line_down(&mut self) {
1030 self.events
1031 .push_back(InternalEvent::Scroll(AlacScroll::Delta(-1)));
1032 }
1033
1034 pub fn scroll_down_by(&mut self, lines: usize) {
1035 self.events
1036 .push_back(InternalEvent::Scroll(AlacScroll::Delta(-(lines as i32))));
1037 }
1038
1039 pub fn scroll_page_up(&mut self) {
1040 self.events
1041 .push_back(InternalEvent::Scroll(AlacScroll::PageUp));
1042 }
1043
1044 pub fn scroll_page_down(&mut self) {
1045 self.events
1046 .push_back(InternalEvent::Scroll(AlacScroll::PageDown));
1047 }
1048
1049 pub fn scroll_to_top(&mut self) {
1050 self.events
1051 .push_back(InternalEvent::Scroll(AlacScroll::Top));
1052 }
1053
1054 pub fn scroll_to_bottom(&mut self) {
1055 self.events
1056 .push_back(InternalEvent::Scroll(AlacScroll::Bottom));
1057 }
1058
1059 ///Resize the terminal and the PTY.
1060 pub fn set_size(&mut self, new_size: TerminalSize) {
1061 if self.last_content.size != new_size {
1062 self.events.push_back(InternalEvent::Resize(new_size))
1063 }
1064 }
1065
1066 ///Write the Input payload to the tty.
1067 fn write_to_pty(&self, input: String) {
1068 self.pty_tx.notify(input.into_bytes());
1069 }
1070
1071 fn write_bytes_to_pty(&self, input: Vec<u8>) {
1072 self.pty_tx.notify(input);
1073 }
1074
1075 pub fn input(&mut self, input: String) {
1076 self.events
1077 .push_back(InternalEvent::Scroll(AlacScroll::Bottom));
1078 self.events.push_back(InternalEvent::SetSelection(None));
1079
1080 self.write_to_pty(input);
1081 }
1082
1083 pub fn input_bytes(&mut self, input: Vec<u8>) {
1084 self.events
1085 .push_back(InternalEvent::Scroll(AlacScroll::Bottom));
1086 self.events.push_back(InternalEvent::SetSelection(None));
1087
1088 self.write_bytes_to_pty(input);
1089 }
1090
1091 pub fn try_keystroke(&mut self, keystroke: &Keystroke, alt_is_meta: bool) -> bool {
1092 let esc = to_esc_str(keystroke, &self.last_content.mode, alt_is_meta);
1093 if let Some(esc) = esc {
1094 self.input(esc);
1095 true
1096 } else {
1097 false
1098 }
1099 }
1100
1101 pub fn try_modifiers_change(&mut self, modifiers: &Modifiers) -> bool {
1102 let changed = self.secondary_pressed != modifiers.secondary();
1103 if !self.secondary_pressed && modifiers.secondary() {
1104 self.refresh_hovered_word();
1105 }
1106 self.secondary_pressed = modifiers.secondary();
1107 changed
1108 }
1109
1110 ///Paste text into the terminal
1111 pub fn paste(&mut self, text: &str) {
1112 let paste_text = if self.last_content.mode.contains(TermMode::BRACKETED_PASTE) {
1113 format!("{}{}{}", "\x1b[200~", text.replace('\x1b', ""), "\x1b[201~")
1114 } else {
1115 text.replace("\r\n", "\r").replace('\n', "\r")
1116 };
1117
1118 self.input(paste_text);
1119 }
1120
1121 pub fn sync(&mut self, cx: &mut ModelContext<Self>) {
1122 let term = self.term.clone();
1123 let mut terminal = term.lock_unfair();
1124 //Note that the ordering of events matters for event processing
1125 while let Some(e) = self.events.pop_front() {
1126 self.process_terminal_event(&e, &mut terminal, cx)
1127 }
1128
1129 self.last_content = Self::make_content(&terminal, &self.last_content);
1130 }
1131
1132 fn make_content(term: &Term<ZedListener>, last_content: &TerminalContent) -> TerminalContent {
1133 let content = term.renderable_content();
1134 TerminalContent {
1135 cells: content
1136 .display_iter
1137 //TODO: Add this once there's a way to retain empty lines
1138 // .filter(|ic| {
1139 // !ic.flags.contains(Flags::HIDDEN)
1140 // && !(ic.bg == Named(NamedColor::Background)
1141 // && ic.c == ' '
1142 // && !ic.flags.contains(Flags::INVERSE))
1143 // })
1144 .map(|ic| IndexedCell {
1145 point: ic.point,
1146 cell: ic.cell.clone(),
1147 })
1148 .collect::<Vec<IndexedCell>>(),
1149 mode: content.mode,
1150 display_offset: content.display_offset,
1151 selection_text: term.selection_to_string(),
1152 selection: content.selection,
1153 cursor: content.cursor,
1154 cursor_char: term.grid()[content.cursor.point].c,
1155 size: last_content.size,
1156 last_hovered_word: last_content.last_hovered_word.clone(),
1157 }
1158 }
1159
1160 pub fn last_n_non_empty_lines(&self, n: usize) -> Vec<String> {
1161 let term = self.term.clone();
1162 let terminal = term.lock_unfair();
1163
1164 let mut lines = Vec::new();
1165 let mut current_line = terminal.bottommost_line();
1166 while lines.len() < n {
1167 let mut line_buffer = String::new();
1168 for cell in &terminal.grid()[current_line] {
1169 line_buffer.push(cell.c);
1170 }
1171 let line = line_buffer.trim_end();
1172 if !line.is_empty() {
1173 lines.push(line.to_string());
1174 }
1175
1176 if current_line == terminal.topmost_line() {
1177 break;
1178 }
1179 current_line = Line(current_line.0 - 1);
1180 }
1181 lines.reverse();
1182 lines
1183 }
1184
1185 pub fn focus_in(&self) {
1186 if self.last_content.mode.contains(TermMode::FOCUS_IN_OUT) {
1187 self.write_to_pty("\x1b[I".to_string());
1188 }
1189 }
1190
1191 pub fn focus_out(&mut self) {
1192 self.last_mouse_position = None;
1193 if self.last_content.mode.contains(TermMode::FOCUS_IN_OUT) {
1194 self.write_to_pty("\x1b[O".to_string());
1195 }
1196 }
1197
1198 pub fn mouse_changed(&mut self, point: AlacPoint, side: AlacDirection) -> bool {
1199 match self.last_mouse {
1200 Some((old_point, old_side)) => {
1201 if old_point == point && old_side == side {
1202 false
1203 } else {
1204 self.last_mouse = Some((point, side));
1205 true
1206 }
1207 }
1208 None => {
1209 self.last_mouse = Some((point, side));
1210 true
1211 }
1212 }
1213 }
1214
1215 pub fn mouse_mode(&self, shift: bool) -> bool {
1216 self.last_content.mode.intersects(TermMode::MOUSE_MODE) && !shift
1217 }
1218
1219 pub fn mouse_move(&mut self, e: &MouseMoveEvent, origin: Point<Pixels>) {
1220 let position = e.position - origin;
1221 self.last_mouse_position = Some(position);
1222 if self.mouse_mode(e.modifiers.shift) {
1223 let (point, side) = grid_point_and_side(
1224 position,
1225 self.last_content.size,
1226 self.last_content.display_offset,
1227 );
1228
1229 if self.mouse_changed(point, side) {
1230 if let Some(bytes) = mouse_moved_report(point, e, self.last_content.mode) {
1231 self.pty_tx.notify(bytes);
1232 }
1233 }
1234 } else if self.secondary_pressed {
1235 self.word_from_position(Some(position));
1236 }
1237 }
1238
1239 fn word_from_position(&mut self, position: Option<Point<Pixels>>) {
1240 if self.selection_phase == SelectionPhase::Selecting {
1241 self.last_content.last_hovered_word = None;
1242 } else if let Some(position) = position {
1243 self.events
1244 .push_back(InternalEvent::FindHyperlink(position, false));
1245 }
1246 }
1247
1248 pub fn mouse_drag(
1249 &mut self,
1250 e: &MouseMoveEvent,
1251 origin: Point<Pixels>,
1252 region: Bounds<Pixels>,
1253 ) {
1254 let position = e.position - origin;
1255 self.last_mouse_position = Some(position);
1256
1257 if !self.mouse_mode(e.modifiers.shift) {
1258 self.selection_phase = SelectionPhase::Selecting;
1259 // Alacritty has the same ordering, of first updating the selection
1260 // then scrolling 15ms later
1261 self.events
1262 .push_back(InternalEvent::UpdateSelection(position));
1263
1264 // Doesn't make sense to scroll the alt screen
1265 if !self.last_content.mode.contains(TermMode::ALT_SCREEN) {
1266 let scroll_delta = match self.drag_line_delta(e, region) {
1267 Some(value) => value,
1268 None => return,
1269 };
1270
1271 let scroll_lines = (scroll_delta / self.last_content.size.line_height) as i32;
1272
1273 self.events
1274 .push_back(InternalEvent::Scroll(AlacScroll::Delta(scroll_lines)));
1275 }
1276 }
1277 }
1278
1279 fn drag_line_delta(&mut self, e: &MouseMoveEvent, region: Bounds<Pixels>) -> Option<Pixels> {
1280 //TODO: Why do these need to be doubled? Probably the same problem that the IME has
1281 let top = region.origin.y + (self.last_content.size.line_height * 2.);
1282 let bottom = region.lower_left().y - (self.last_content.size.line_height * 2.);
1283 let scroll_delta = if e.position.y < top {
1284 (top - e.position.y).pow(1.1)
1285 } else if e.position.y > bottom {
1286 -((e.position.y - bottom).pow(1.1))
1287 } else {
1288 return None; //Nothing to do
1289 };
1290 Some(scroll_delta)
1291 }
1292
1293 pub fn mouse_down(
1294 &mut self,
1295 e: &MouseDownEvent,
1296 origin: Point<Pixels>,
1297 _cx: &mut ModelContext<Self>,
1298 ) {
1299 let position = e.position - origin;
1300 let point = grid_point(
1301 position,
1302 self.last_content.size,
1303 self.last_content.display_offset,
1304 );
1305
1306 if self.mouse_mode(e.modifiers.shift) {
1307 if let Some(bytes) =
1308 mouse_button_report(point, e.button, e.modifiers, true, self.last_content.mode)
1309 {
1310 self.pty_tx.notify(bytes);
1311 }
1312 } else {
1313 match e.button {
1314 MouseButton::Left => {
1315 let position = e.position - origin;
1316 let (point, side) = grid_point_and_side(
1317 position,
1318 self.last_content.size,
1319 self.last_content.display_offset,
1320 );
1321
1322 let selection_type = match e.click_count {
1323 0 => return, //This is a release
1324 1 => Some(SelectionType::Simple),
1325 2 => Some(SelectionType::Semantic),
1326 3 => Some(SelectionType::Lines),
1327 _ => None,
1328 };
1329
1330 let selection = selection_type
1331 .map(|selection_type| Selection::new(selection_type, point, side));
1332
1333 if let Some(sel) = selection {
1334 self.events
1335 .push_back(InternalEvent::SetSelection(Some((sel, point))));
1336 }
1337 }
1338 #[cfg(target_os = "linux")]
1339 MouseButton::Middle => {
1340 if let Some(item) = _cx.read_from_primary() {
1341 let text = item.text().to_string();
1342 self.input(text);
1343 }
1344 }
1345 _ => {}
1346 }
1347 }
1348 }
1349
1350 pub fn mouse_up(
1351 &mut self,
1352 e: &MouseUpEvent,
1353 origin: Point<Pixels>,
1354 cx: &mut ModelContext<Self>,
1355 ) {
1356 let setting = TerminalSettings::get_global(cx);
1357
1358 let position = e.position - origin;
1359 if self.mouse_mode(e.modifiers.shift) {
1360 let point = grid_point(
1361 position,
1362 self.last_content.size,
1363 self.last_content.display_offset,
1364 );
1365
1366 if let Some(bytes) =
1367 mouse_button_report(point, e.button, e.modifiers, false, self.last_content.mode)
1368 {
1369 self.pty_tx.notify(bytes);
1370 }
1371 } else {
1372 if e.button == MouseButton::Left && setting.copy_on_select {
1373 self.copy();
1374 }
1375
1376 //Hyperlinks
1377 if self.selection_phase == SelectionPhase::Ended {
1378 let mouse_cell_index = content_index_for_mouse(position, &self.last_content.size);
1379 if let Some(link) = self.last_content.cells[mouse_cell_index].hyperlink() {
1380 cx.open_url(link.uri());
1381 } else if self.secondary_pressed {
1382 self.events
1383 .push_back(InternalEvent::FindHyperlink(position, true));
1384 }
1385 }
1386 }
1387
1388 self.selection_phase = SelectionPhase::Ended;
1389 self.last_mouse = None;
1390 }
1391
1392 ///Scroll the terminal
1393 pub fn scroll_wheel(&mut self, e: &ScrollWheelEvent, origin: Point<Pixels>) {
1394 let mouse_mode = self.mouse_mode(e.shift);
1395
1396 if let Some(scroll_lines) = self.determine_scroll_lines(e, mouse_mode) {
1397 if mouse_mode {
1398 let point = grid_point(
1399 e.position - origin,
1400 self.last_content.size,
1401 self.last_content.display_offset,
1402 );
1403
1404 if let Some(scrolls) = scroll_report(point, scroll_lines, e, self.last_content.mode)
1405 {
1406 for scroll in scrolls {
1407 self.pty_tx.notify(scroll);
1408 }
1409 };
1410 } else if self
1411 .last_content
1412 .mode
1413 .contains(TermMode::ALT_SCREEN | TermMode::ALTERNATE_SCROLL)
1414 && !e.shift
1415 {
1416 self.pty_tx.notify(alt_scroll(scroll_lines))
1417 } else {
1418 if scroll_lines != 0 {
1419 let scroll = AlacScroll::Delta(scroll_lines);
1420
1421 self.events.push_back(InternalEvent::Scroll(scroll));
1422 }
1423 }
1424 }
1425 }
1426
1427 fn refresh_hovered_word(&mut self) {
1428 self.word_from_position(self.last_mouse_position);
1429 }
1430
1431 fn determine_scroll_lines(&mut self, e: &ScrollWheelEvent, mouse_mode: bool) -> Option<i32> {
1432 let scroll_multiplier = if mouse_mode { 1. } else { SCROLL_MULTIPLIER };
1433 let line_height = self.last_content.size.line_height;
1434 match e.touch_phase {
1435 /* Reset scroll state on started */
1436 TouchPhase::Started => {
1437 self.scroll_px = px(0.);
1438 None
1439 }
1440 /* Calculate the appropriate scroll lines */
1441 TouchPhase::Moved => {
1442 let old_offset = (self.scroll_px / line_height) as i32;
1443
1444 self.scroll_px += e.delta.pixel_delta(line_height).y * scroll_multiplier;
1445
1446 let new_offset = (self.scroll_px / line_height) as i32;
1447
1448 // Whenever we hit the edges, reset our stored scroll to 0
1449 // so we can respond to changes in direction quickly
1450 self.scroll_px %= self.last_content.size.height();
1451
1452 Some(new_offset - old_offset)
1453 }
1454 TouchPhase::Ended => None,
1455 }
1456 }
1457
1458 pub fn find_matches(
1459 &mut self,
1460 mut searcher: RegexSearch,
1461 cx: &mut ModelContext<Self>,
1462 ) -> Task<Vec<RangeInclusive<AlacPoint>>> {
1463 let term = self.term.clone();
1464 cx.background_executor().spawn(async move {
1465 let term = term.lock();
1466
1467 all_search_matches(&term, &mut searcher).collect()
1468 })
1469 }
1470
1471 pub fn working_directory(&self) -> Option<PathBuf> {
1472 self.pty_info
1473 .current
1474 .as_ref()
1475 .map(|process| process.cwd.clone())
1476 }
1477
1478 pub fn title(&self, truncate: bool) -> String {
1479 const MAX_CHARS: usize = 25;
1480 match &self.task {
1481 Some(task_state) => {
1482 if truncate {
1483 truncate_and_trailoff(&task_state.label, MAX_CHARS)
1484 } else {
1485 task_state.full_label.clone()
1486 }
1487 }
1488 None => self
1489 .pty_info
1490 .current
1491 .as_ref()
1492 .map(|fpi| {
1493 let process_file = fpi
1494 .cwd
1495 .file_name()
1496 .map(|name| name.to_string_lossy().to_string())
1497 .unwrap_or_default();
1498
1499 let argv = fpi.argv.clone();
1500 let process_name = format!(
1501 "{}{}",
1502 fpi.name,
1503 if argv.len() >= 1 {
1504 format!(" {}", (argv[1..]).join(" "))
1505 } else {
1506 "".to_string()
1507 }
1508 );
1509 let (process_file, process_name) = if truncate {
1510 (
1511 truncate_and_trailoff(&process_file, MAX_CHARS),
1512 truncate_and_trailoff(&process_name, MAX_CHARS),
1513 )
1514 } else {
1515 (process_file, process_name)
1516 };
1517 format!("{process_file} — {process_name}")
1518 })
1519 .unwrap_or_else(|| "Terminal".to_string()),
1520 }
1521 }
1522
1523 pub fn can_navigate_to_selected_word(&self) -> bool {
1524 self.secondary_pressed && self.hovered_word
1525 }
1526
1527 pub fn task(&self) -> Option<&TaskState> {
1528 self.task.as_ref()
1529 }
1530
1531 pub fn wait_for_completed_task(&self, cx: &mut AppContext) -> Task<()> {
1532 if let Some(task) = self.task() {
1533 if task.status == TaskStatus::Running {
1534 let mut completion_receiver = task.completion_rx.clone();
1535 return cx.spawn(|_| async move {
1536 completion_receiver.next().await;
1537 });
1538 }
1539 }
1540 Task::ready(())
1541 }
1542
1543 fn register_task_finished(
1544 &mut self,
1545 error_code: Option<i32>,
1546 cx: &mut ModelContext<'_, Terminal>,
1547 ) {
1548 self.completion_tx.try_send(()).ok();
1549 let task = match &mut self.task {
1550 Some(task) => task,
1551 None => {
1552 if error_code.is_none() {
1553 cx.emit(Event::CloseTerminal);
1554 }
1555 return;
1556 }
1557 };
1558 if task.status != TaskStatus::Running {
1559 return;
1560 }
1561 match error_code {
1562 Some(error_code) => {
1563 task.status.register_task_exit(error_code);
1564 }
1565 None => {
1566 task.status.register_terminal_exit();
1567 }
1568 };
1569
1570 let (task_line, command_line) = task_summary(task, error_code);
1571 // SAFETY: the invocation happens on non `TaskStatus::Running` tasks, once,
1572 // after either `AlacTermEvent::Exit` or `AlacTermEvent::ChildExit` events that are spawned
1573 // when Zed task finishes and no more output is made.
1574 // After the task summary is output once, no more text is appended to the terminal.
1575 unsafe { append_text_to_term(&mut self.term.lock(), &[&task_line, &command_line]) };
1576 }
1577}
1578
1579const TASK_DELIMITER: &str = "⏵ ";
1580fn task_summary(task: &TaskState, error_code: Option<i32>) -> (String, String) {
1581 let escaped_full_label = task.full_label.replace("\r\n", "\r").replace('\n', "\r");
1582 let task_line = match error_code {
1583 Some(0) => {
1584 format!("{TASK_DELIMITER}Task `{escaped_full_label}` finished successfully")
1585 }
1586 Some(error_code) => {
1587 format!("{TASK_DELIMITER}Task `{escaped_full_label}` finished with non-zero error code: {error_code}")
1588 }
1589 None => {
1590 format!("{TASK_DELIMITER}Task `{escaped_full_label}` finished")
1591 }
1592 };
1593 let escaped_command_label = task.command_label.replace("\r\n", "\r").replace('\n', "\r");
1594 let command_line = format!("{TASK_DELIMITER}Command: '{escaped_command_label}'");
1595 (task_line, command_line)
1596}
1597
1598/// Appends a stringified task summary to the terminal, after its output.
1599///
1600/// SAFETY: This function should only be called after terminal's PTY is no longer alive.
1601/// New text being added to the terminal here, uses "less public" APIs,
1602/// which are not maintaining the entire terminal state intact.
1603///
1604///
1605/// The library
1606///
1607/// * does not increment inner grid cursor's _lines_ on `input` calls
1608/// (but displaying the lines correctly and incrementing cursor's columns)
1609///
1610/// * ignores `\n` and \r` character input, requiring the `newline` call instead
1611///
1612/// * does not alter grid state after `newline` call
1613/// so its `bottommost_line` is always the same additions, and
1614/// the cursor's `point` is not updated to the new line and column values
1615///
1616/// * ??? there could be more consequences, and any further "proper" streaming from the PTY might bug and/or panic.
1617/// Still, concequent `append_text_to_term` invocations are possible and display the contents correctly.
1618///
1619/// Despite the quirks, this is the simplest approach to appending text to the terminal: its alternative, `grid_mut` manipulations,
1620/// do not properly set the scrolling state and display odd text after appending; also those manipulations are more tedious and error-prone.
1621/// The function achieves proper display and scrolling capabilities, at a cost of grid state not properly synchronized.
1622/// This is enough for printing moderately-sized texts like task summaries, but might break or perform poorly for larger texts.
1623unsafe fn append_text_to_term(term: &mut Term<ZedListener>, text_lines: &[&str]) {
1624 term.newline();
1625 term.grid_mut().cursor.point.column = Column(0);
1626 for line in text_lines {
1627 for c in line.chars() {
1628 term.input(c);
1629 }
1630 term.newline();
1631 term.grid_mut().cursor.point.column = Column(0);
1632 }
1633}
1634
1635impl Drop for Terminal {
1636 fn drop(&mut self) {
1637 self.pty_tx.0.send(Msg::Shutdown).ok();
1638 }
1639}
1640
1641impl EventEmitter<Event> for Terminal {}
1642
1643/// Based on alacritty/src/display/hint.rs > regex_match_at
1644/// Retrieve the match, if the specified point is inside the content matching the regex.
1645fn regex_match_at<T>(term: &Term<T>, point: AlacPoint, regex: &mut RegexSearch) -> Option<Match> {
1646 visible_regex_match_iter(term, regex).find(|rm| rm.contains(&point))
1647}
1648
1649/// Copied from alacritty/src/display/hint.rs:
1650/// Iterate over all visible regex matches.
1651pub fn visible_regex_match_iter<'a, T>(
1652 term: &'a Term<T>,
1653 regex: &'a mut RegexSearch,
1654) -> impl Iterator<Item = Match> + 'a {
1655 let viewport_start = Line(-(term.grid().display_offset() as i32));
1656 let viewport_end = viewport_start + term.bottommost_line();
1657 let mut start = term.line_search_left(AlacPoint::new(viewport_start, Column(0)));
1658 let mut end = term.line_search_right(AlacPoint::new(viewport_end, Column(0)));
1659 start.line = start.line.max(viewport_start - MAX_SEARCH_LINES);
1660 end.line = end.line.min(viewport_end + MAX_SEARCH_LINES);
1661
1662 RegexIter::new(start, end, AlacDirection::Right, term, regex)
1663 .skip_while(move |rm| rm.end().line < viewport_start)
1664 .take_while(move |rm| rm.start().line <= viewport_end)
1665}
1666
1667fn make_selection(range: &RangeInclusive<AlacPoint>) -> Selection {
1668 let mut selection = Selection::new(SelectionType::Simple, *range.start(), AlacDirection::Left);
1669 selection.update(*range.end(), AlacDirection::Right);
1670 selection
1671}
1672
1673fn all_search_matches<'a, T>(
1674 term: &'a Term<T>,
1675 regex: &'a mut RegexSearch,
1676) -> impl Iterator<Item = Match> + 'a {
1677 let start = AlacPoint::new(term.grid().topmost_line(), Column(0));
1678 let end = AlacPoint::new(term.grid().bottommost_line(), term.grid().last_column());
1679 RegexIter::new(start, end, AlacDirection::Right, term, regex)
1680}
1681
1682fn content_index_for_mouse(pos: Point<Pixels>, size: &TerminalSize) -> usize {
1683 let col = (pos.x / size.cell_width()).round() as usize;
1684 let clamped_col = min(col, size.columns() - 1);
1685 let row = (pos.y / size.line_height()).round() as usize;
1686 let clamped_row = min(row, size.screen_lines() - 1);
1687 clamped_row * size.columns() + clamped_col
1688}
1689
1690/// Converts an 8 bit ANSI color to its GPUI equivalent.
1691/// Accepts `usize` for compatibility with the `alacritty::Colors` interface,
1692/// Other than that use case, should only be called with values in the [0,255] range
1693pub fn get_color_at_index(index: usize, theme: &Theme) -> Hsla {
1694 let colors = theme.colors();
1695
1696 match index {
1697 // 0-15 are the same as the named colors above
1698 0 => colors.terminal_ansi_black,
1699 1 => colors.terminal_ansi_red,
1700 2 => colors.terminal_ansi_green,
1701 3 => colors.terminal_ansi_yellow,
1702 4 => colors.terminal_ansi_blue,
1703 5 => colors.terminal_ansi_magenta,
1704 6 => colors.terminal_ansi_cyan,
1705 7 => colors.terminal_ansi_white,
1706 8 => colors.terminal_ansi_bright_black,
1707 9 => colors.terminal_ansi_bright_red,
1708 10 => colors.terminal_ansi_bright_green,
1709 11 => colors.terminal_ansi_bright_yellow,
1710 12 => colors.terminal_ansi_bright_blue,
1711 13 => colors.terminal_ansi_bright_magenta,
1712 14 => colors.terminal_ansi_bright_cyan,
1713 15 => colors.terminal_ansi_bright_white,
1714 // 16-231 are mapped to their RGB colors on a 0-5 range per channel
1715 16..=231 => {
1716 let (r, g, b) = rgb_for_index(index as u8); // Split the index into its ANSI-RGB components
1717 let step = (u8::MAX as f32 / 5.).floor() as u8; // Split the RGB range into 5 chunks, with floor so no overflow
1718 rgba_color(r * step, g * step, b * step) // Map the ANSI-RGB components to an RGB color
1719 }
1720 // 232-255 are a 24 step grayscale from black to white
1721 232..=255 => {
1722 let i = index as u8 - 232; // Align index to 0..24
1723 let step = (u8::MAX as f32 / 24.).floor() as u8; // Split the RGB grayscale values into 24 chunks
1724 rgba_color(i * step, i * step, i * step) // Map the ANSI-grayscale components to the RGB-grayscale
1725 }
1726 // For compatibility with the alacritty::Colors interface
1727 256 => colors.text,
1728 257 => colors.background,
1729 258 => theme.players().local().cursor,
1730 259 => colors.terminal_ansi_dim_black,
1731 260 => colors.terminal_ansi_dim_red,
1732 261 => colors.terminal_ansi_dim_green,
1733 262 => colors.terminal_ansi_dim_yellow,
1734 263 => colors.terminal_ansi_dim_blue,
1735 264 => colors.terminal_ansi_dim_magenta,
1736 265 => colors.terminal_ansi_dim_cyan,
1737 266 => colors.terminal_ansi_dim_white,
1738 267 => colors.terminal_bright_foreground,
1739 268 => colors.terminal_ansi_black, // 'Dim Background', non-standard color
1740
1741 _ => black(),
1742 }
1743}
1744
1745/// Generates the RGB channels in [0, 5] for a given index into the 6x6x6 ANSI color cube.
1746/// See: [8 bit ANSI color](https://en.wikipedia.org/wiki/ANSI_escape_code#8-bit).
1747///
1748/// Wikipedia gives a formula for calculating the index for a given color:
1749///
1750/// ```
1751/// index = 16 + 36 × r + 6 × g + b (0 ≤ r, g, b ≤ 5)
1752/// ```
1753///
1754/// This function does the reverse, calculating the `r`, `g`, and `b` components from a given index.
1755fn rgb_for_index(i: u8) -> (u8, u8, u8) {
1756 debug_assert!((16..=231).contains(&i));
1757 let i = i - 16;
1758 let r = (i - (i % 36)) / 36;
1759 let g = ((i % 36) - (i % 6)) / 6;
1760 let b = (i % 36) % 6;
1761 (r, g, b)
1762}
1763
1764pub fn rgba_color(r: u8, g: u8, b: u8) -> Hsla {
1765 Rgba {
1766 r: (r as f32 / 255.),
1767 g: (g as f32 / 255.),
1768 b: (b as f32 / 255.),
1769 a: 1.,
1770 }
1771 .into()
1772}
1773
1774#[cfg(test)]
1775mod tests {
1776 use alacritty_terminal::{
1777 index::{Column, Line, Point as AlacPoint},
1778 term::cell::Cell,
1779 };
1780 use gpui::{point, size, Pixels};
1781 use rand::{distributions::Alphanumeric, rngs::ThreadRng, thread_rng, Rng};
1782
1783 use crate::{
1784 content_index_for_mouse, rgb_for_index, IndexedCell, TerminalContent, TerminalSize,
1785 };
1786
1787 #[test]
1788 fn test_rgb_for_index() {
1789 // Test every possible value in the color cube.
1790 for i in 16..=231 {
1791 let (r, g, b) = rgb_for_index(i);
1792 assert_eq!(i, 16 + 36 * r + 6 * g + b);
1793 }
1794 }
1795
1796 #[test]
1797 fn test_mouse_to_cell_test() {
1798 let mut rng = thread_rng();
1799 const ITERATIONS: usize = 10;
1800 const PRECISION: usize = 1000;
1801
1802 for _ in 0..ITERATIONS {
1803 let viewport_cells = rng.gen_range(15..20);
1804 let cell_size = rng.gen_range(5 * PRECISION..20 * PRECISION) as f32 / PRECISION as f32;
1805
1806 let size = crate::TerminalSize {
1807 cell_width: Pixels::from(cell_size),
1808 line_height: Pixels::from(cell_size),
1809 size: size(
1810 Pixels::from(cell_size * (viewport_cells as f32)),
1811 Pixels::from(cell_size * (viewport_cells as f32)),
1812 ),
1813 };
1814
1815 let cells = get_cells(size, &mut rng);
1816 let content = convert_cells_to_content(size, &cells);
1817
1818 for row in 0..(viewport_cells - 1) {
1819 let row = row as usize;
1820 for col in 0..(viewport_cells - 1) {
1821 let col = col as usize;
1822
1823 let row_offset = rng.gen_range(0..PRECISION) as f32 / PRECISION as f32;
1824 let col_offset = rng.gen_range(0..PRECISION) as f32 / PRECISION as f32;
1825
1826 let mouse_pos = point(
1827 Pixels::from(col as f32 * cell_size + col_offset),
1828 Pixels::from(row as f32 * cell_size + row_offset),
1829 );
1830
1831 let content_index = content_index_for_mouse(mouse_pos, &content.size);
1832 let mouse_cell = content.cells[content_index].c;
1833 let real_cell = cells[row][col];
1834
1835 assert_eq!(mouse_cell, real_cell);
1836 }
1837 }
1838 }
1839 }
1840
1841 #[test]
1842 fn test_mouse_to_cell_clamp() {
1843 let mut rng = thread_rng();
1844
1845 let size = crate::TerminalSize {
1846 cell_width: Pixels::from(10.),
1847 line_height: Pixels::from(10.),
1848 size: size(Pixels::from(100.), Pixels::from(100.)),
1849 };
1850
1851 let cells = get_cells(size, &mut rng);
1852 let content = convert_cells_to_content(size, &cells);
1853
1854 assert_eq!(
1855 content.cells[content_index_for_mouse(
1856 point(Pixels::from(-10.), Pixels::from(-10.)),
1857 &content.size,
1858 )]
1859 .c,
1860 cells[0][0]
1861 );
1862 assert_eq!(
1863 content.cells[content_index_for_mouse(
1864 point(Pixels::from(1000.), Pixels::from(1000.)),
1865 &content.size,
1866 )]
1867 .c,
1868 cells[9][9]
1869 );
1870 }
1871
1872 fn get_cells(size: TerminalSize, rng: &mut ThreadRng) -> Vec<Vec<char>> {
1873 let mut cells = Vec::new();
1874
1875 for _ in 0..((size.height() / size.line_height()) as usize) {
1876 let mut row_vec = Vec::new();
1877 for _ in 0..((size.width() / size.cell_width()) as usize) {
1878 let cell_char = rng.sample(Alphanumeric) as char;
1879 row_vec.push(cell_char)
1880 }
1881 cells.push(row_vec)
1882 }
1883
1884 cells
1885 }
1886
1887 fn convert_cells_to_content(size: TerminalSize, cells: &Vec<Vec<char>>) -> TerminalContent {
1888 let mut ic = Vec::new();
1889
1890 for row in 0..cells.len() {
1891 for col in 0..cells[row].len() {
1892 let cell_char = cells[row][col];
1893 ic.push(IndexedCell {
1894 point: AlacPoint::new(Line(row as i32), Column(col)),
1895 cell: Cell {
1896 c: cell_char,
1897 ..Default::default()
1898 },
1899 });
1900 }
1901 }
1902
1903 TerminalContent {
1904 cells: ic,
1905 size,
1906 ..Default::default()
1907 }
1908 }
1909}