1use crate::{AssistantPanel, AssistantPanelEvent, DEFAULT_CONTEXT_LINES};
2use anyhow::{Context as _, Result};
3use assistant_context_editor::{humanize_token_count, RequestType};
4use assistant_settings::AssistantSettings;
5use client::telemetry::Telemetry;
6use collections::{HashMap, VecDeque};
7use editor::{
8 actions::{MoveDown, MoveUp, SelectAll},
9 Editor, EditorElement, EditorEvent, EditorMode, EditorStyle, MultiBuffer,
10};
11use fs::Fs;
12use futures::{channel::mpsc, SinkExt, StreamExt};
13use gpui::{
14 App, Context, Entity, EventEmitter, FocusHandle, Focusable, Global, Subscription, Task,
15 TextStyle, UpdateGlobal, WeakEntity,
16};
17use language::Buffer;
18use language_model::{
19 report_assistant_event, LanguageModelRegistry, LanguageModelRequest,
20 LanguageModelRequestMessage, Role,
21};
22use language_model_selector::{InlineLanguageModelSelector, LanguageModelSelector};
23use prompt_store::PromptBuilder;
24use settings::{update_settings_file, Settings};
25use std::{
26 cmp,
27 sync::Arc,
28 time::{Duration, Instant},
29};
30use telemetry_events::{AssistantEvent, AssistantKind, AssistantPhase};
31use terminal::Terminal;
32use terminal_view::TerminalView;
33use theme::ThemeSettings;
34use ui::{prelude::*, text_for_action, IconButtonShape, Tooltip};
35use util::ResultExt;
36use workspace::{notifications::NotificationId, Toast, Workspace};
37
38pub fn init(
39 fs: Arc<dyn Fs>,
40 prompt_builder: Arc<PromptBuilder>,
41 telemetry: Arc<Telemetry>,
42 cx: &mut App,
43) {
44 cx.set_global(TerminalInlineAssistant::new(fs, prompt_builder, telemetry));
45}
46
47const PROMPT_HISTORY_MAX_LEN: usize = 20;
48
49#[derive(Copy, Clone, Default, Debug, PartialEq, Eq, Hash)]
50struct TerminalInlineAssistId(usize);
51
52impl TerminalInlineAssistId {
53 fn post_inc(&mut self) -> TerminalInlineAssistId {
54 let id = *self;
55 self.0 += 1;
56 id
57 }
58}
59
60pub struct TerminalInlineAssistant {
61 next_assist_id: TerminalInlineAssistId,
62 assists: HashMap<TerminalInlineAssistId, TerminalInlineAssist>,
63 prompt_history: VecDeque<String>,
64 telemetry: Option<Arc<Telemetry>>,
65 fs: Arc<dyn Fs>,
66 prompt_builder: Arc<PromptBuilder>,
67}
68
69impl Global for TerminalInlineAssistant {}
70
71impl TerminalInlineAssistant {
72 pub fn new(
73 fs: Arc<dyn Fs>,
74 prompt_builder: Arc<PromptBuilder>,
75 telemetry: Arc<Telemetry>,
76 ) -> Self {
77 Self {
78 next_assist_id: TerminalInlineAssistId::default(),
79 assists: HashMap::default(),
80 prompt_history: VecDeque::default(),
81 telemetry: Some(telemetry),
82 fs,
83 prompt_builder,
84 }
85 }
86
87 pub fn assist(
88 &mut self,
89 terminal_view: &Entity<TerminalView>,
90 workspace: Option<WeakEntity<Workspace>>,
91 assistant_panel: Option<&Entity<AssistantPanel>>,
92 initial_prompt: Option<String>,
93 window: &mut Window,
94 cx: &mut App,
95 ) {
96 let terminal = terminal_view.read(cx).terminal().clone();
97 let assist_id = self.next_assist_id.post_inc();
98 let prompt_buffer = cx.new(|cx| Buffer::local(initial_prompt.unwrap_or_default(), cx));
99 let prompt_buffer = cx.new(|cx| MultiBuffer::singleton(prompt_buffer, cx));
100 let codegen = cx.new(|_| Codegen::new(terminal, self.telemetry.clone()));
101
102 let prompt_editor = cx.new(|cx| {
103 PromptEditor::new(
104 assist_id,
105 self.prompt_history.clone(),
106 prompt_buffer.clone(),
107 codegen,
108 assistant_panel,
109 workspace.clone(),
110 self.fs.clone(),
111 window,
112 cx,
113 )
114 });
115 let prompt_editor_render = prompt_editor.clone();
116 let block = terminal_view::BlockProperties {
117 height: 2,
118 render: Box::new(move |_| prompt_editor_render.clone().into_any_element()),
119 };
120 terminal_view.update(cx, |terminal_view, cx| {
121 terminal_view.set_block_below_cursor(block, window, cx);
122 });
123
124 let terminal_assistant = TerminalInlineAssist::new(
125 assist_id,
126 terminal_view,
127 assistant_panel.is_some(),
128 prompt_editor,
129 workspace.clone(),
130 window,
131 cx,
132 );
133
134 self.assists.insert(assist_id, terminal_assistant);
135
136 self.focus_assist(assist_id, window, cx);
137 }
138
139 fn focus_assist(
140 &mut self,
141 assist_id: TerminalInlineAssistId,
142 window: &mut Window,
143 cx: &mut App,
144 ) {
145 let assist = &self.assists[&assist_id];
146 if let Some(prompt_editor) = assist.prompt_editor.as_ref() {
147 prompt_editor.update(cx, |this, cx| {
148 this.editor.update(cx, |editor, cx| {
149 window.focus(&editor.focus_handle(cx));
150 editor.select_all(&SelectAll, window, cx);
151 });
152 });
153 }
154 }
155
156 fn handle_prompt_editor_event(
157 &mut self,
158 prompt_editor: Entity<PromptEditor>,
159 event: &PromptEditorEvent,
160 window: &mut Window,
161 cx: &mut App,
162 ) {
163 let assist_id = prompt_editor.read(cx).id;
164 match event {
165 PromptEditorEvent::StartRequested => {
166 self.start_assist(assist_id, cx);
167 }
168 PromptEditorEvent::StopRequested => {
169 self.stop_assist(assist_id, cx);
170 }
171 PromptEditorEvent::ConfirmRequested { execute } => {
172 self.finish_assist(assist_id, false, *execute, window, cx);
173 }
174 PromptEditorEvent::CancelRequested => {
175 self.finish_assist(assist_id, true, false, window, cx);
176 }
177 PromptEditorEvent::DismissRequested => {
178 self.dismiss_assist(assist_id, window, cx);
179 }
180 PromptEditorEvent::Resized { height_in_lines } => {
181 self.insert_prompt_editor_into_terminal(assist_id, *height_in_lines, window, cx);
182 }
183 }
184 }
185
186 fn start_assist(&mut self, assist_id: TerminalInlineAssistId, cx: &mut App) {
187 let assist = if let Some(assist) = self.assists.get_mut(&assist_id) {
188 assist
189 } else {
190 return;
191 };
192
193 let Some(user_prompt) = assist
194 .prompt_editor
195 .as_ref()
196 .map(|editor| editor.read(cx).prompt(cx))
197 else {
198 return;
199 };
200
201 self.prompt_history.retain(|prompt| *prompt != user_prompt);
202 self.prompt_history.push_back(user_prompt.clone());
203 if self.prompt_history.len() > PROMPT_HISTORY_MAX_LEN {
204 self.prompt_history.pop_front();
205 }
206
207 assist
208 .terminal
209 .update(cx, |terminal, cx| {
210 terminal
211 .terminal()
212 .update(cx, |terminal, _| terminal.input(CLEAR_INPUT.to_string()));
213 })
214 .log_err();
215
216 let codegen = assist.codegen.clone();
217 let Some(request) = self.request_for_inline_assist(assist_id, cx).log_err() else {
218 return;
219 };
220
221 codegen.update(cx, |codegen, cx| codegen.start(request, cx));
222 }
223
224 fn stop_assist(&mut self, assist_id: TerminalInlineAssistId, cx: &mut App) {
225 let assist = if let Some(assist) = self.assists.get_mut(&assist_id) {
226 assist
227 } else {
228 return;
229 };
230
231 assist.codegen.update(cx, |codegen, cx| codegen.stop(cx));
232 }
233
234 fn request_for_inline_assist(
235 &self,
236 assist_id: TerminalInlineAssistId,
237 cx: &mut App,
238 ) -> Result<LanguageModelRequest> {
239 let assist = self.assists.get(&assist_id).context("invalid assist")?;
240
241 let shell = std::env::var("SHELL").ok();
242 let (latest_output, working_directory) = assist
243 .terminal
244 .update(cx, |terminal, cx| {
245 let terminal = terminal.entity().read(cx);
246 let latest_output = terminal.last_n_non_empty_lines(DEFAULT_CONTEXT_LINES);
247 let working_directory = terminal
248 .working_directory()
249 .map(|path| path.to_string_lossy().to_string());
250 (latest_output, working_directory)
251 })
252 .ok()
253 .unwrap_or_default();
254
255 let context_request = if assist.include_context {
256 assist.workspace.as_ref().and_then(|workspace| {
257 let workspace = workspace.upgrade()?.read(cx);
258 let assistant_panel = workspace.panel::<AssistantPanel>(cx)?;
259 Some(
260 assistant_panel
261 .read(cx)
262 .active_context(cx)?
263 .read(cx)
264 .to_completion_request(RequestType::Chat, cx),
265 )
266 })
267 } else {
268 None
269 };
270
271 let prompt = self.prompt_builder.generate_terminal_assistant_prompt(
272 &assist
273 .prompt_editor
274 .clone()
275 .context("invalid assist")?
276 .read(cx)
277 .prompt(cx),
278 shell.as_deref(),
279 working_directory.as_deref(),
280 &latest_output,
281 )?;
282
283 let mut messages = Vec::new();
284 if let Some(context_request) = context_request {
285 messages = context_request.messages;
286 }
287
288 messages.push(LanguageModelRequestMessage {
289 role: Role::User,
290 content: vec![prompt.into()],
291 cache: false,
292 });
293
294 Ok(LanguageModelRequest {
295 messages,
296 tools: Vec::new(),
297 stop: Vec::new(),
298 temperature: None,
299 })
300 }
301
302 fn finish_assist(
303 &mut self,
304 assist_id: TerminalInlineAssistId,
305 undo: bool,
306 execute: bool,
307 window: &mut Window,
308 cx: &mut App,
309 ) {
310 self.dismiss_assist(assist_id, window, cx);
311
312 if let Some(assist) = self.assists.remove(&assist_id) {
313 assist
314 .terminal
315 .update(cx, |this, cx| {
316 this.clear_block_below_cursor(cx);
317 this.focus_handle(cx).focus(window);
318 })
319 .log_err();
320
321 if let Some(model) = LanguageModelRegistry::read_global(cx).active_model() {
322 let codegen = assist.codegen.read(cx);
323 let executor = cx.background_executor().clone();
324 report_assistant_event(
325 AssistantEvent {
326 conversation_id: None,
327 kind: AssistantKind::InlineTerminal,
328 message_id: codegen.message_id.clone(),
329 phase: if undo {
330 AssistantPhase::Rejected
331 } else {
332 AssistantPhase::Accepted
333 },
334 model: model.telemetry_id(),
335 model_provider: model.provider_id().to_string(),
336 response_latency: None,
337 error_message: None,
338 language_name: None,
339 },
340 codegen.telemetry.clone(),
341 cx.http_client(),
342 model.api_key(cx),
343 &executor,
344 );
345 }
346
347 assist.codegen.update(cx, |codegen, cx| {
348 if undo {
349 codegen.undo(cx);
350 } else if execute {
351 codegen.complete(cx);
352 }
353 });
354 }
355 }
356
357 fn dismiss_assist(
358 &mut self,
359 assist_id: TerminalInlineAssistId,
360 window: &mut Window,
361 cx: &mut App,
362 ) -> bool {
363 let Some(assist) = self.assists.get_mut(&assist_id) else {
364 return false;
365 };
366 if assist.prompt_editor.is_none() {
367 return false;
368 }
369 assist.prompt_editor = None;
370 assist
371 .terminal
372 .update(cx, |this, cx| {
373 this.clear_block_below_cursor(cx);
374 this.focus_handle(cx).focus(window);
375 })
376 .is_ok()
377 }
378
379 fn insert_prompt_editor_into_terminal(
380 &mut self,
381 assist_id: TerminalInlineAssistId,
382 height: u8,
383 window: &mut Window,
384 cx: &mut App,
385 ) {
386 if let Some(assist) = self.assists.get_mut(&assist_id) {
387 if let Some(prompt_editor) = assist.prompt_editor.as_ref().cloned() {
388 assist
389 .terminal
390 .update(cx, |terminal, cx| {
391 terminal.clear_block_below_cursor(cx);
392 let block = terminal_view::BlockProperties {
393 height,
394 render: Box::new(move |_| prompt_editor.clone().into_any_element()),
395 };
396 terminal.set_block_below_cursor(block, window, cx);
397 })
398 .log_err();
399 }
400 }
401 }
402}
403
404struct TerminalInlineAssist {
405 terminal: WeakEntity<TerminalView>,
406 prompt_editor: Option<Entity<PromptEditor>>,
407 codegen: Entity<Codegen>,
408 workspace: Option<WeakEntity<Workspace>>,
409 include_context: bool,
410 _subscriptions: Vec<Subscription>,
411}
412
413impl TerminalInlineAssist {
414 pub fn new(
415 assist_id: TerminalInlineAssistId,
416 terminal: &Entity<TerminalView>,
417 include_context: bool,
418 prompt_editor: Entity<PromptEditor>,
419 workspace: Option<WeakEntity<Workspace>>,
420 window: &mut Window,
421 cx: &mut App,
422 ) -> Self {
423 let codegen = prompt_editor.read(cx).codegen.clone();
424 Self {
425 terminal: terminal.downgrade(),
426 prompt_editor: Some(prompt_editor.clone()),
427 codegen: codegen.clone(),
428 workspace: workspace.clone(),
429 include_context,
430 _subscriptions: vec![
431 window.subscribe(&prompt_editor, cx, |prompt_editor, event, window, cx| {
432 TerminalInlineAssistant::update_global(cx, |this, cx| {
433 this.handle_prompt_editor_event(prompt_editor, event, window, cx)
434 })
435 }),
436 window.subscribe(&codegen, cx, move |codegen, event, window, cx| {
437 TerminalInlineAssistant::update_global(cx, |this, cx| match event {
438 CodegenEvent::Finished => {
439 let assist = if let Some(assist) = this.assists.get(&assist_id) {
440 assist
441 } else {
442 return;
443 };
444
445 if let CodegenStatus::Error(error) = &codegen.read(cx).status {
446 if assist.prompt_editor.is_none() {
447 if let Some(workspace) = assist
448 .workspace
449 .as_ref()
450 .and_then(|workspace| workspace.upgrade())
451 {
452 let error =
453 format!("Terminal inline assistant error: {}", error);
454 workspace.update(cx, |workspace, cx| {
455 struct InlineAssistantError;
456
457 let id =
458 NotificationId::composite::<InlineAssistantError>(
459 assist_id.0,
460 );
461
462 workspace.show_toast(Toast::new(id, error), cx);
463 })
464 }
465 }
466 }
467
468 if assist.prompt_editor.is_none() {
469 this.finish_assist(assist_id, false, false, window, cx);
470 }
471 }
472 })
473 }),
474 ],
475 }
476 }
477}
478
479enum PromptEditorEvent {
480 StartRequested,
481 StopRequested,
482 ConfirmRequested { execute: bool },
483 CancelRequested,
484 DismissRequested,
485 Resized { height_in_lines: u8 },
486}
487
488struct PromptEditor {
489 id: TerminalInlineAssistId,
490 height_in_lines: u8,
491 editor: Entity<Editor>,
492 language_model_selector: Entity<LanguageModelSelector>,
493 edited_since_done: bool,
494 prompt_history: VecDeque<String>,
495 prompt_history_ix: Option<usize>,
496 pending_prompt: String,
497 codegen: Entity<Codegen>,
498 _codegen_subscription: Subscription,
499 editor_subscriptions: Vec<Subscription>,
500 pending_token_count: Task<Result<()>>,
501 token_count: Option<usize>,
502 _token_count_subscriptions: Vec<Subscription>,
503 workspace: Option<WeakEntity<Workspace>>,
504}
505
506impl EventEmitter<PromptEditorEvent> for PromptEditor {}
507
508impl Render for PromptEditor {
509 fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
510 let status = &self.codegen.read(cx).status;
511 let buttons = match status {
512 CodegenStatus::Idle => {
513 vec![
514 IconButton::new("cancel", IconName::Close)
515 .icon_color(Color::Muted)
516 .shape(IconButtonShape::Square)
517 .tooltip(|window, cx| {
518 Tooltip::for_action("Cancel Assist", &menu::Cancel, window, cx)
519 })
520 .on_click(
521 cx.listener(|_, _, _, cx| cx.emit(PromptEditorEvent::CancelRequested)),
522 ),
523 IconButton::new("start", IconName::SparkleAlt)
524 .icon_color(Color::Muted)
525 .shape(IconButtonShape::Square)
526 .tooltip(|window, cx| {
527 Tooltip::for_action("Generate", &menu::Confirm, window, cx)
528 })
529 .on_click(
530 cx.listener(|_, _, _, cx| cx.emit(PromptEditorEvent::StartRequested)),
531 ),
532 ]
533 }
534 CodegenStatus::Pending => {
535 vec![
536 IconButton::new("cancel", IconName::Close)
537 .icon_color(Color::Muted)
538 .shape(IconButtonShape::Square)
539 .tooltip(Tooltip::text("Cancel Assist"))
540 .on_click(
541 cx.listener(|_, _, _, cx| cx.emit(PromptEditorEvent::CancelRequested)),
542 ),
543 IconButton::new("stop", IconName::Stop)
544 .icon_color(Color::Error)
545 .shape(IconButtonShape::Square)
546 .tooltip(|window, cx| {
547 Tooltip::with_meta(
548 "Interrupt Generation",
549 Some(&menu::Cancel),
550 "Changes won't be discarded",
551 window,
552 cx,
553 )
554 })
555 .on_click(
556 cx.listener(|_, _, _, cx| cx.emit(PromptEditorEvent::StopRequested)),
557 ),
558 ]
559 }
560 CodegenStatus::Error(_) | CodegenStatus::Done => {
561 let cancel = IconButton::new("cancel", IconName::Close)
562 .icon_color(Color::Muted)
563 .shape(IconButtonShape::Square)
564 .tooltip(|window, cx| {
565 Tooltip::for_action("Cancel Assist", &menu::Cancel, window, cx)
566 })
567 .on_click(
568 cx.listener(|_, _, _, cx| cx.emit(PromptEditorEvent::CancelRequested)),
569 );
570
571 let has_error = matches!(status, CodegenStatus::Error(_));
572 if has_error || self.edited_since_done {
573 vec![
574 cancel,
575 IconButton::new("restart", IconName::RotateCw)
576 .icon_color(Color::Info)
577 .shape(IconButtonShape::Square)
578 .tooltip(|window, cx| {
579 Tooltip::with_meta(
580 "Restart Generation",
581 Some(&menu::Confirm),
582 "Changes will be discarded",
583 window,
584 cx,
585 )
586 })
587 .on_click(cx.listener(|_, _, _, cx| {
588 cx.emit(PromptEditorEvent::StartRequested);
589 })),
590 ]
591 } else {
592 vec![
593 cancel,
594 IconButton::new("accept", IconName::Check)
595 .icon_color(Color::Info)
596 .shape(IconButtonShape::Square)
597 .tooltip(|window, cx| {
598 Tooltip::for_action(
599 "Accept Generated Command",
600 &menu::Confirm,
601 window,
602 cx,
603 )
604 })
605 .on_click(cx.listener(|_, _, _, cx| {
606 cx.emit(PromptEditorEvent::ConfirmRequested { execute: false });
607 })),
608 IconButton::new("confirm", IconName::Play)
609 .icon_color(Color::Info)
610 .shape(IconButtonShape::Square)
611 .tooltip(|window, cx| {
612 Tooltip::for_action(
613 "Execute Generated Command",
614 &menu::SecondaryConfirm,
615 window,
616 cx,
617 )
618 })
619 .on_click(cx.listener(|_, _, _, cx| {
620 cx.emit(PromptEditorEvent::ConfirmRequested { execute: true });
621 })),
622 ]
623 }
624 }
625 };
626
627 h_flex()
628 .bg(cx.theme().colors().editor_background)
629 .border_y_1()
630 .border_color(cx.theme().status().info_border)
631 .py_2()
632 .h_full()
633 .w_full()
634 .on_action(cx.listener(Self::confirm))
635 .on_action(cx.listener(Self::secondary_confirm))
636 .on_action(cx.listener(Self::cancel))
637 .on_action(cx.listener(Self::move_up))
638 .on_action(cx.listener(Self::move_down))
639 .child(
640 h_flex()
641 .w_12()
642 .justify_center()
643 .gap_2()
644 .child(
645 InlineLanguageModelSelector::new(self.language_model_selector.clone())
646 .render(window, cx),
647 )
648 .children(
649 if let CodegenStatus::Error(error) = &self.codegen.read(cx).status {
650 let error_message = SharedString::from(error.to_string());
651 Some(
652 div()
653 .id("error")
654 .tooltip(Tooltip::text(error_message))
655 .child(
656 Icon::new(IconName::XCircle)
657 .size(IconSize::Small)
658 .color(Color::Error),
659 ),
660 )
661 } else {
662 None
663 },
664 ),
665 )
666 .child(div().flex_1().child(self.render_prompt_editor(cx)))
667 .child(
668 h_flex()
669 .gap_1()
670 .pr_4()
671 .children(self.render_token_count(cx))
672 .children(buttons),
673 )
674 }
675}
676
677impl Focusable for PromptEditor {
678 fn focus_handle(&self, cx: &App) -> FocusHandle {
679 self.editor.focus_handle(cx)
680 }
681}
682
683impl PromptEditor {
684 const MAX_LINES: u8 = 8;
685
686 #[allow(clippy::too_many_arguments)]
687 fn new(
688 id: TerminalInlineAssistId,
689 prompt_history: VecDeque<String>,
690 prompt_buffer: Entity<MultiBuffer>,
691 codegen: Entity<Codegen>,
692 assistant_panel: Option<&Entity<AssistantPanel>>,
693 workspace: Option<WeakEntity<Workspace>>,
694 fs: Arc<dyn Fs>,
695 window: &mut Window,
696 cx: &mut Context<Self>,
697 ) -> Self {
698 let prompt_editor = cx.new(|cx| {
699 let mut editor = Editor::new(
700 EditorMode::AutoHeight {
701 max_lines: Self::MAX_LINES as usize,
702 },
703 prompt_buffer,
704 None,
705 false,
706 window,
707 cx,
708 );
709 editor.set_soft_wrap_mode(language::language_settings::SoftWrap::EditorWidth, cx);
710 editor.set_placeholder_text(Self::placeholder_text(window, cx), cx);
711 editor
712 });
713
714 let mut token_count_subscriptions = Vec::new();
715 if let Some(assistant_panel) = assistant_panel {
716 token_count_subscriptions.push(cx.subscribe_in(
717 assistant_panel,
718 window,
719 Self::handle_assistant_panel_event,
720 ));
721 }
722
723 let mut this = Self {
724 id,
725 height_in_lines: 1,
726 editor: prompt_editor,
727 language_model_selector: cx.new(|cx| {
728 let fs = fs.clone();
729 LanguageModelSelector::new(
730 move |model, cx| {
731 update_settings_file::<AssistantSettings>(
732 fs.clone(),
733 cx,
734 move |settings, _| settings.set_model(model.clone()),
735 );
736 },
737 window,
738 cx,
739 )
740 }),
741 edited_since_done: false,
742 prompt_history,
743 prompt_history_ix: None,
744 pending_prompt: String::new(),
745 _codegen_subscription: cx.observe_in(&codegen, window, Self::handle_codegen_changed),
746 editor_subscriptions: Vec::new(),
747 codegen,
748 pending_token_count: Task::ready(Ok(())),
749 token_count: None,
750 _token_count_subscriptions: token_count_subscriptions,
751 workspace,
752 };
753 this.count_lines(cx);
754 this.count_tokens(cx);
755 this.subscribe_to_editor(cx);
756 this
757 }
758
759 fn placeholder_text(window: &Window, cx: &App) -> String {
760 let context_keybinding = text_for_action(&zed_actions::assistant::ToggleFocus, window, cx)
761 .map(|keybinding| format!(" • {keybinding} for context"))
762 .unwrap_or_default();
763
764 format!("Generate…{context_keybinding} • ↓↑ for history")
765 }
766
767 fn subscribe_to_editor(&mut self, cx: &mut Context<Self>) {
768 self.editor_subscriptions.clear();
769 self.editor_subscriptions
770 .push(cx.observe(&self.editor, Self::handle_prompt_editor_changed));
771 self.editor_subscriptions
772 .push(cx.subscribe(&self.editor, Self::handle_prompt_editor_events));
773 }
774
775 fn prompt(&self, cx: &App) -> String {
776 self.editor.read(cx).text(cx)
777 }
778
779 fn count_lines(&mut self, cx: &mut Context<Self>) {
780 let height_in_lines = cmp::max(
781 2, // Make the editor at least two lines tall, to account for padding and buttons.
782 cmp::min(
783 self.editor
784 .update(cx, |editor, cx| editor.max_point(cx).row().0 + 1),
785 Self::MAX_LINES as u32,
786 ),
787 ) as u8;
788
789 if height_in_lines != self.height_in_lines {
790 self.height_in_lines = height_in_lines;
791 cx.emit(PromptEditorEvent::Resized { height_in_lines });
792 }
793 }
794
795 fn handle_assistant_panel_event(
796 &mut self,
797 _: &Entity<AssistantPanel>,
798 event: &AssistantPanelEvent,
799 _: &mut Window,
800 cx: &mut Context<Self>,
801 ) {
802 let AssistantPanelEvent::ContextEdited { .. } = event;
803 self.count_tokens(cx);
804 }
805
806 fn count_tokens(&mut self, cx: &mut Context<Self>) {
807 let assist_id = self.id;
808 let Some(model) = LanguageModelRegistry::read_global(cx).active_model() else {
809 return;
810 };
811 self.pending_token_count = cx.spawn(|this, mut cx| async move {
812 cx.background_executor().timer(Duration::from_secs(1)).await;
813 let request =
814 cx.update_global(|inline_assistant: &mut TerminalInlineAssistant, cx| {
815 inline_assistant.request_for_inline_assist(assist_id, cx)
816 })??;
817
818 let token_count = cx.update(|cx| model.count_tokens(request, cx))?.await?;
819 this.update(&mut cx, |this, cx| {
820 this.token_count = Some(token_count);
821 cx.notify();
822 })
823 })
824 }
825
826 fn handle_prompt_editor_changed(&mut self, _: Entity<Editor>, cx: &mut Context<Self>) {
827 self.count_lines(cx);
828 }
829
830 fn handle_prompt_editor_events(
831 &mut self,
832 _: Entity<Editor>,
833 event: &EditorEvent,
834 cx: &mut Context<Self>,
835 ) {
836 match event {
837 EditorEvent::Edited { .. } => {
838 let prompt = self.editor.read(cx).text(cx);
839 if self
840 .prompt_history_ix
841 .map_or(true, |ix| self.prompt_history[ix] != prompt)
842 {
843 self.prompt_history_ix.take();
844 self.pending_prompt = prompt;
845 }
846
847 self.edited_since_done = true;
848 cx.notify();
849 }
850 EditorEvent::BufferEdited => {
851 self.count_tokens(cx);
852 }
853 _ => {}
854 }
855 }
856
857 fn handle_codegen_changed(
858 &mut self,
859 _: Entity<Codegen>,
860 _: &mut Window,
861 cx: &mut Context<Self>,
862 ) {
863 match &self.codegen.read(cx).status {
864 CodegenStatus::Idle => {
865 self.editor
866 .update(cx, |editor, _| editor.set_read_only(false));
867 }
868 CodegenStatus::Pending => {
869 self.editor
870 .update(cx, |editor, _| editor.set_read_only(true));
871 }
872 CodegenStatus::Done | CodegenStatus::Error(_) => {
873 self.edited_since_done = false;
874 self.editor
875 .update(cx, |editor, _| editor.set_read_only(false));
876 }
877 }
878 }
879
880 fn cancel(&mut self, _: &editor::actions::Cancel, _: &mut Window, cx: &mut Context<Self>) {
881 match &self.codegen.read(cx).status {
882 CodegenStatus::Idle | CodegenStatus::Done | CodegenStatus::Error(_) => {
883 cx.emit(PromptEditorEvent::CancelRequested);
884 }
885 CodegenStatus::Pending => {
886 cx.emit(PromptEditorEvent::StopRequested);
887 }
888 }
889 }
890
891 fn confirm(&mut self, _: &menu::Confirm, _: &mut Window, cx: &mut Context<Self>) {
892 match &self.codegen.read(cx).status {
893 CodegenStatus::Idle => {
894 if !self.editor.read(cx).text(cx).trim().is_empty() {
895 cx.emit(PromptEditorEvent::StartRequested);
896 }
897 }
898 CodegenStatus::Pending => {
899 cx.emit(PromptEditorEvent::DismissRequested);
900 }
901 CodegenStatus::Done => {
902 if self.edited_since_done {
903 cx.emit(PromptEditorEvent::StartRequested);
904 } else {
905 cx.emit(PromptEditorEvent::ConfirmRequested { execute: false });
906 }
907 }
908 CodegenStatus::Error(_) => {
909 cx.emit(PromptEditorEvent::StartRequested);
910 }
911 }
912 }
913
914 fn secondary_confirm(
915 &mut self,
916 _: &menu::SecondaryConfirm,
917 _: &mut Window,
918 cx: &mut Context<Self>,
919 ) {
920 if matches!(self.codegen.read(cx).status, CodegenStatus::Done) {
921 cx.emit(PromptEditorEvent::ConfirmRequested { execute: true });
922 }
923 }
924
925 fn move_up(&mut self, _: &MoveUp, window: &mut Window, cx: &mut Context<Self>) {
926 if let Some(ix) = self.prompt_history_ix {
927 if ix > 0 {
928 self.prompt_history_ix = Some(ix - 1);
929 let prompt = self.prompt_history[ix - 1].as_str();
930 self.editor.update(cx, |editor, cx| {
931 editor.set_text(prompt, window, cx);
932 editor.move_to_beginning(&Default::default(), window, cx);
933 });
934 }
935 } else if !self.prompt_history.is_empty() {
936 self.prompt_history_ix = Some(self.prompt_history.len() - 1);
937 let prompt = self.prompt_history[self.prompt_history.len() - 1].as_str();
938 self.editor.update(cx, |editor, cx| {
939 editor.set_text(prompt, window, cx);
940 editor.move_to_beginning(&Default::default(), window, cx);
941 });
942 }
943 }
944
945 fn move_down(&mut self, _: &MoveDown, window: &mut Window, cx: &mut Context<Self>) {
946 if let Some(ix) = self.prompt_history_ix {
947 if ix < self.prompt_history.len() - 1 {
948 self.prompt_history_ix = Some(ix + 1);
949 let prompt = self.prompt_history[ix + 1].as_str();
950 self.editor.update(cx, |editor, cx| {
951 editor.set_text(prompt, window, cx);
952 editor.move_to_end(&Default::default(), window, cx)
953 });
954 } else {
955 self.prompt_history_ix = None;
956 let prompt = self.pending_prompt.as_str();
957 self.editor.update(cx, |editor, cx| {
958 editor.set_text(prompt, window, cx);
959 editor.move_to_end(&Default::default(), window, cx)
960 });
961 }
962 }
963 }
964
965 fn render_token_count(&self, cx: &mut Context<Self>) -> Option<impl IntoElement> {
966 let model = LanguageModelRegistry::read_global(cx).active_model()?;
967 let token_count = self.token_count?;
968 let max_token_count = model.max_token_count();
969
970 let remaining_tokens = max_token_count as isize - token_count as isize;
971 let token_count_color = if remaining_tokens <= 0 {
972 Color::Error
973 } else if token_count as f32 / max_token_count as f32 >= 0.8 {
974 Color::Warning
975 } else {
976 Color::Muted
977 };
978
979 let mut token_count = h_flex()
980 .id("token_count")
981 .gap_0p5()
982 .child(
983 Label::new(humanize_token_count(token_count))
984 .size(LabelSize::Small)
985 .color(token_count_color),
986 )
987 .child(Label::new("/").size(LabelSize::Small).color(Color::Muted))
988 .child(
989 Label::new(humanize_token_count(max_token_count))
990 .size(LabelSize::Small)
991 .color(Color::Muted),
992 );
993 if let Some(workspace) = self.workspace.clone() {
994 token_count = token_count
995 .tooltip(|window, cx| {
996 Tooltip::with_meta(
997 "Tokens Used by Inline Assistant",
998 None,
999 "Click to Open Assistant Panel",
1000 window,
1001 cx,
1002 )
1003 })
1004 .cursor_pointer()
1005 .on_mouse_down(gpui::MouseButton::Left, |_, _, cx| cx.stop_propagation())
1006 .on_click(move |_, window, cx| {
1007 cx.stop_propagation();
1008 workspace
1009 .update(cx, |workspace, cx| {
1010 workspace.focus_panel::<AssistantPanel>(window, cx)
1011 })
1012 .ok();
1013 });
1014 } else {
1015 token_count = token_count
1016 .cursor_default()
1017 .tooltip(Tooltip::text("Tokens Used by Inline Assistant"));
1018 }
1019
1020 Some(token_count)
1021 }
1022
1023 fn render_prompt_editor(&self, cx: &mut Context<Self>) -> impl IntoElement {
1024 let settings = ThemeSettings::get_global(cx);
1025 let text_style = TextStyle {
1026 color: if self.editor.read(cx).read_only(cx) {
1027 cx.theme().colors().text_disabled
1028 } else {
1029 cx.theme().colors().text
1030 },
1031 font_family: settings.buffer_font.family.clone(),
1032 font_fallbacks: settings.buffer_font.fallbacks.clone(),
1033 font_size: settings.buffer_font_size(cx).into(),
1034 font_weight: settings.buffer_font.weight,
1035 line_height: relative(settings.buffer_line_height.value()),
1036 ..Default::default()
1037 };
1038 EditorElement::new(
1039 &self.editor,
1040 EditorStyle {
1041 background: cx.theme().colors().editor_background,
1042 local_player: cx.theme().players().local(),
1043 text: text_style,
1044 ..Default::default()
1045 },
1046 )
1047 }
1048}
1049
1050#[derive(Debug)]
1051pub enum CodegenEvent {
1052 Finished,
1053}
1054
1055impl EventEmitter<CodegenEvent> for Codegen {}
1056
1057#[cfg(not(target_os = "windows"))]
1058const CLEAR_INPUT: &str = "\x15";
1059#[cfg(target_os = "windows")]
1060const CLEAR_INPUT: &str = "\x03";
1061const CARRIAGE_RETURN: &str = "\x0d";
1062
1063struct TerminalTransaction {
1064 terminal: Entity<Terminal>,
1065}
1066
1067impl TerminalTransaction {
1068 pub fn start(terminal: Entity<Terminal>) -> Self {
1069 Self { terminal }
1070 }
1071
1072 pub fn push(&mut self, hunk: String, cx: &mut App) {
1073 // Ensure that the assistant cannot accidentally execute commands that are streamed into the terminal
1074 let input = Self::sanitize_input(hunk);
1075 self.terminal
1076 .update(cx, |terminal, _| terminal.input(input));
1077 }
1078
1079 pub fn undo(&self, cx: &mut App) {
1080 self.terminal
1081 .update(cx, |terminal, _| terminal.input(CLEAR_INPUT.to_string()));
1082 }
1083
1084 pub fn complete(&self, cx: &mut App) {
1085 self.terminal.update(cx, |terminal, _| {
1086 terminal.input(CARRIAGE_RETURN.to_string())
1087 });
1088 }
1089
1090 fn sanitize_input(input: String) -> String {
1091 input.replace(['\r', '\n'], "")
1092 }
1093}
1094
1095pub struct Codegen {
1096 status: CodegenStatus,
1097 telemetry: Option<Arc<Telemetry>>,
1098 terminal: Entity<Terminal>,
1099 generation: Task<()>,
1100 message_id: Option<String>,
1101 transaction: Option<TerminalTransaction>,
1102}
1103
1104impl Codegen {
1105 pub fn new(terminal: Entity<Terminal>, telemetry: Option<Arc<Telemetry>>) -> Self {
1106 Self {
1107 terminal,
1108 telemetry,
1109 status: CodegenStatus::Idle,
1110 generation: Task::ready(()),
1111 message_id: None,
1112 transaction: None,
1113 }
1114 }
1115
1116 pub fn start(&mut self, prompt: LanguageModelRequest, cx: &mut Context<Self>) {
1117 let Some(model) = LanguageModelRegistry::read_global(cx).active_model() else {
1118 return;
1119 };
1120
1121 let model_api_key = model.api_key(cx);
1122 let http_client = cx.http_client();
1123 let telemetry = self.telemetry.clone();
1124 self.status = CodegenStatus::Pending;
1125 self.transaction = Some(TerminalTransaction::start(self.terminal.clone()));
1126 self.generation = cx.spawn(|this, mut cx| async move {
1127 let model_telemetry_id = model.telemetry_id();
1128 let model_provider_id = model.provider_id();
1129 let response = model.stream_completion_text(prompt, &cx).await;
1130 let generate = async {
1131 let message_id = response
1132 .as_ref()
1133 .ok()
1134 .and_then(|response| response.message_id.clone());
1135
1136 let (mut hunks_tx, mut hunks_rx) = mpsc::channel(1);
1137
1138 let task = cx.background_spawn({
1139 let message_id = message_id.clone();
1140 let executor = cx.background_executor().clone();
1141 async move {
1142 let mut response_latency = None;
1143 let request_start = Instant::now();
1144 let task = async {
1145 let mut chunks = response?.stream;
1146 while let Some(chunk) = chunks.next().await {
1147 if response_latency.is_none() {
1148 response_latency = Some(request_start.elapsed());
1149 }
1150 let chunk = chunk?;
1151 hunks_tx.send(chunk).await?;
1152 }
1153
1154 anyhow::Ok(())
1155 };
1156
1157 let result = task.await;
1158
1159 let error_message = result.as_ref().err().map(|error| error.to_string());
1160 report_assistant_event(
1161 AssistantEvent {
1162 conversation_id: None,
1163 kind: AssistantKind::InlineTerminal,
1164 message_id,
1165 phase: AssistantPhase::Response,
1166 model: model_telemetry_id,
1167 model_provider: model_provider_id.to_string(),
1168 response_latency,
1169 error_message,
1170 language_name: None,
1171 },
1172 telemetry,
1173 http_client,
1174 model_api_key,
1175 &executor,
1176 );
1177
1178 result?;
1179 anyhow::Ok(())
1180 }
1181 });
1182
1183 this.update(&mut cx, |this, _| {
1184 this.message_id = message_id;
1185 })?;
1186
1187 while let Some(hunk) = hunks_rx.next().await {
1188 this.update(&mut cx, |this, cx| {
1189 if let Some(transaction) = &mut this.transaction {
1190 transaction.push(hunk, cx);
1191 cx.notify();
1192 }
1193 })?;
1194 }
1195
1196 task.await?;
1197 anyhow::Ok(())
1198 };
1199
1200 let result = generate.await;
1201
1202 this.update(&mut cx, |this, cx| {
1203 if let Err(error) = result {
1204 this.status = CodegenStatus::Error(error);
1205 } else {
1206 this.status = CodegenStatus::Done;
1207 }
1208 cx.emit(CodegenEvent::Finished);
1209 cx.notify();
1210 })
1211 .ok();
1212 });
1213 cx.notify();
1214 }
1215
1216 pub fn stop(&mut self, cx: &mut Context<Self>) {
1217 self.status = CodegenStatus::Done;
1218 self.generation = Task::ready(());
1219 cx.emit(CodegenEvent::Finished);
1220 cx.notify();
1221 }
1222
1223 pub fn complete(&mut self, cx: &mut Context<Self>) {
1224 if let Some(transaction) = self.transaction.take() {
1225 transaction.complete(cx);
1226 }
1227 }
1228
1229 pub fn undo(&mut self, cx: &mut Context<Self>) {
1230 if let Some(transaction) = self.transaction.take() {
1231 transaction.undo(cx);
1232 }
1233 }
1234}
1235
1236enum CodegenStatus {
1237 Idle,
1238 Pending,
1239 Done,
1240 Error(anyhow::Error),
1241}