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::{LanguageModelSelector, LanguageModelSelectorPopoverMenu};
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(LanguageModelSelectorPopoverMenu::new(
645 self.language_model_selector.clone(),
646 IconButton::new("change-model", IconName::SettingsAlt)
647 .shape(IconButtonShape::Square)
648 .icon_size(IconSize::Small)
649 .icon_color(Color::Muted),
650 move |window, cx| {
651 Tooltip::with_meta(
652 format!(
653 "Using {}",
654 LanguageModelRegistry::read_global(cx)
655 .active_model()
656 .map(|model| model.name().0)
657 .unwrap_or_else(|| "No model selected".into()),
658 ),
659 None,
660 "Change Model",
661 window,
662 cx,
663 )
664 },
665 gpui::Corner::TopRight,
666 ))
667 .children(
668 if let CodegenStatus::Error(error) = &self.codegen.read(cx).status {
669 let error_message = SharedString::from(error.to_string());
670 Some(
671 div()
672 .id("error")
673 .tooltip(Tooltip::text(error_message))
674 .child(
675 Icon::new(IconName::XCircle)
676 .size(IconSize::Small)
677 .color(Color::Error),
678 ),
679 )
680 } else {
681 None
682 },
683 ),
684 )
685 .child(div().flex_1().child(self.render_prompt_editor(cx)))
686 .child(
687 h_flex()
688 .gap_1()
689 .pr_4()
690 .children(self.render_token_count(cx))
691 .children(buttons),
692 )
693 }
694}
695
696impl Focusable for PromptEditor {
697 fn focus_handle(&self, cx: &App) -> FocusHandle {
698 self.editor.focus_handle(cx)
699 }
700}
701
702impl PromptEditor {
703 const MAX_LINES: u8 = 8;
704
705 #[allow(clippy::too_many_arguments)]
706 fn new(
707 id: TerminalInlineAssistId,
708 prompt_history: VecDeque<String>,
709 prompt_buffer: Entity<MultiBuffer>,
710 codegen: Entity<Codegen>,
711 assistant_panel: Option<&Entity<AssistantPanel>>,
712 workspace: Option<WeakEntity<Workspace>>,
713 fs: Arc<dyn Fs>,
714 window: &mut Window,
715 cx: &mut Context<Self>,
716 ) -> Self {
717 let prompt_editor = cx.new(|cx| {
718 let mut editor = Editor::new(
719 EditorMode::AutoHeight {
720 max_lines: Self::MAX_LINES as usize,
721 },
722 prompt_buffer,
723 None,
724 false,
725 window,
726 cx,
727 );
728 editor.set_soft_wrap_mode(language::language_settings::SoftWrap::EditorWidth, cx);
729 editor.set_placeholder_text(Self::placeholder_text(window, cx), cx);
730 editor
731 });
732
733 let mut token_count_subscriptions = Vec::new();
734 if let Some(assistant_panel) = assistant_panel {
735 token_count_subscriptions.push(cx.subscribe_in(
736 assistant_panel,
737 window,
738 Self::handle_assistant_panel_event,
739 ));
740 }
741
742 let mut this = Self {
743 id,
744 height_in_lines: 1,
745 editor: prompt_editor,
746 language_model_selector: cx.new(|cx| {
747 let fs = fs.clone();
748 LanguageModelSelector::new(
749 move |model, cx| {
750 update_settings_file::<AssistantSettings>(
751 fs.clone(),
752 cx,
753 move |settings, _| settings.set_model(model.clone()),
754 );
755 },
756 window,
757 cx,
758 )
759 }),
760 edited_since_done: false,
761 prompt_history,
762 prompt_history_ix: None,
763 pending_prompt: String::new(),
764 _codegen_subscription: cx.observe_in(&codegen, window, Self::handle_codegen_changed),
765 editor_subscriptions: Vec::new(),
766 codegen,
767 pending_token_count: Task::ready(Ok(())),
768 token_count: None,
769 _token_count_subscriptions: token_count_subscriptions,
770 workspace,
771 };
772 this.count_lines(cx);
773 this.count_tokens(cx);
774 this.subscribe_to_editor(cx);
775 this
776 }
777
778 fn placeholder_text(window: &Window, cx: &App) -> String {
779 let context_keybinding = text_for_action(&zed_actions::assistant::ToggleFocus, window, cx)
780 .map(|keybinding| format!(" • {keybinding} for context"))
781 .unwrap_or_default();
782
783 format!("Generate…{context_keybinding} • ↓↑ for history")
784 }
785
786 fn subscribe_to_editor(&mut self, cx: &mut Context<Self>) {
787 self.editor_subscriptions.clear();
788 self.editor_subscriptions
789 .push(cx.observe(&self.editor, Self::handle_prompt_editor_changed));
790 self.editor_subscriptions
791 .push(cx.subscribe(&self.editor, Self::handle_prompt_editor_events));
792 }
793
794 fn prompt(&self, cx: &App) -> String {
795 self.editor.read(cx).text(cx)
796 }
797
798 fn count_lines(&mut self, cx: &mut Context<Self>) {
799 let height_in_lines = cmp::max(
800 2, // Make the editor at least two lines tall, to account for padding and buttons.
801 cmp::min(
802 self.editor
803 .update(cx, |editor, cx| editor.max_point(cx).row().0 + 1),
804 Self::MAX_LINES as u32,
805 ),
806 ) as u8;
807
808 if height_in_lines != self.height_in_lines {
809 self.height_in_lines = height_in_lines;
810 cx.emit(PromptEditorEvent::Resized { height_in_lines });
811 }
812 }
813
814 fn handle_assistant_panel_event(
815 &mut self,
816 _: &Entity<AssistantPanel>,
817 event: &AssistantPanelEvent,
818 _: &mut Window,
819 cx: &mut Context<Self>,
820 ) {
821 let AssistantPanelEvent::ContextEdited { .. } = event;
822 self.count_tokens(cx);
823 }
824
825 fn count_tokens(&mut self, cx: &mut Context<Self>) {
826 let assist_id = self.id;
827 let Some(model) = LanguageModelRegistry::read_global(cx).active_model() else {
828 return;
829 };
830 self.pending_token_count = cx.spawn(|this, mut cx| async move {
831 cx.background_executor().timer(Duration::from_secs(1)).await;
832 let request =
833 cx.update_global(|inline_assistant: &mut TerminalInlineAssistant, cx| {
834 inline_assistant.request_for_inline_assist(assist_id, cx)
835 })??;
836
837 let token_count = cx.update(|cx| model.count_tokens(request, cx))?.await?;
838 this.update(&mut cx, |this, cx| {
839 this.token_count = Some(token_count);
840 cx.notify();
841 })
842 })
843 }
844
845 fn handle_prompt_editor_changed(&mut self, _: Entity<Editor>, cx: &mut Context<Self>) {
846 self.count_lines(cx);
847 }
848
849 fn handle_prompt_editor_events(
850 &mut self,
851 _: Entity<Editor>,
852 event: &EditorEvent,
853 cx: &mut Context<Self>,
854 ) {
855 match event {
856 EditorEvent::Edited { .. } => {
857 let prompt = self.editor.read(cx).text(cx);
858 if self
859 .prompt_history_ix
860 .map_or(true, |ix| self.prompt_history[ix] != prompt)
861 {
862 self.prompt_history_ix.take();
863 self.pending_prompt = prompt;
864 }
865
866 self.edited_since_done = true;
867 cx.notify();
868 }
869 EditorEvent::BufferEdited => {
870 self.count_tokens(cx);
871 }
872 _ => {}
873 }
874 }
875
876 fn handle_codegen_changed(
877 &mut self,
878 _: Entity<Codegen>,
879 _: &mut Window,
880 cx: &mut Context<Self>,
881 ) {
882 match &self.codegen.read(cx).status {
883 CodegenStatus::Idle => {
884 self.editor
885 .update(cx, |editor, _| editor.set_read_only(false));
886 }
887 CodegenStatus::Pending => {
888 self.editor
889 .update(cx, |editor, _| editor.set_read_only(true));
890 }
891 CodegenStatus::Done | CodegenStatus::Error(_) => {
892 self.edited_since_done = false;
893 self.editor
894 .update(cx, |editor, _| editor.set_read_only(false));
895 }
896 }
897 }
898
899 fn cancel(&mut self, _: &editor::actions::Cancel, _: &mut Window, cx: &mut Context<Self>) {
900 match &self.codegen.read(cx).status {
901 CodegenStatus::Idle | CodegenStatus::Done | CodegenStatus::Error(_) => {
902 cx.emit(PromptEditorEvent::CancelRequested);
903 }
904 CodegenStatus::Pending => {
905 cx.emit(PromptEditorEvent::StopRequested);
906 }
907 }
908 }
909
910 fn confirm(&mut self, _: &menu::Confirm, _: &mut Window, cx: &mut Context<Self>) {
911 match &self.codegen.read(cx).status {
912 CodegenStatus::Idle => {
913 if !self.editor.read(cx).text(cx).trim().is_empty() {
914 cx.emit(PromptEditorEvent::StartRequested);
915 }
916 }
917 CodegenStatus::Pending => {
918 cx.emit(PromptEditorEvent::DismissRequested);
919 }
920 CodegenStatus::Done => {
921 if self.edited_since_done {
922 cx.emit(PromptEditorEvent::StartRequested);
923 } else {
924 cx.emit(PromptEditorEvent::ConfirmRequested { execute: false });
925 }
926 }
927 CodegenStatus::Error(_) => {
928 cx.emit(PromptEditorEvent::StartRequested);
929 }
930 }
931 }
932
933 fn secondary_confirm(
934 &mut self,
935 _: &menu::SecondaryConfirm,
936 _: &mut Window,
937 cx: &mut Context<Self>,
938 ) {
939 if matches!(self.codegen.read(cx).status, CodegenStatus::Done) {
940 cx.emit(PromptEditorEvent::ConfirmRequested { execute: true });
941 }
942 }
943
944 fn move_up(&mut self, _: &MoveUp, window: &mut Window, cx: &mut Context<Self>) {
945 if let Some(ix) = self.prompt_history_ix {
946 if ix > 0 {
947 self.prompt_history_ix = Some(ix - 1);
948 let prompt = self.prompt_history[ix - 1].as_str();
949 self.editor.update(cx, |editor, cx| {
950 editor.set_text(prompt, window, cx);
951 editor.move_to_beginning(&Default::default(), window, cx);
952 });
953 }
954 } else if !self.prompt_history.is_empty() {
955 self.prompt_history_ix = Some(self.prompt_history.len() - 1);
956 let prompt = self.prompt_history[self.prompt_history.len() - 1].as_str();
957 self.editor.update(cx, |editor, cx| {
958 editor.set_text(prompt, window, cx);
959 editor.move_to_beginning(&Default::default(), window, cx);
960 });
961 }
962 }
963
964 fn move_down(&mut self, _: &MoveDown, window: &mut Window, cx: &mut Context<Self>) {
965 if let Some(ix) = self.prompt_history_ix {
966 if ix < self.prompt_history.len() - 1 {
967 self.prompt_history_ix = Some(ix + 1);
968 let prompt = self.prompt_history[ix + 1].as_str();
969 self.editor.update(cx, |editor, cx| {
970 editor.set_text(prompt, window, cx);
971 editor.move_to_end(&Default::default(), window, cx)
972 });
973 } else {
974 self.prompt_history_ix = None;
975 let prompt = self.pending_prompt.as_str();
976 self.editor.update(cx, |editor, cx| {
977 editor.set_text(prompt, window, cx);
978 editor.move_to_end(&Default::default(), window, cx)
979 });
980 }
981 }
982 }
983
984 fn render_token_count(&self, cx: &mut Context<Self>) -> Option<impl IntoElement> {
985 let model = LanguageModelRegistry::read_global(cx).active_model()?;
986 let token_count = self.token_count?;
987 let max_token_count = model.max_token_count();
988
989 let remaining_tokens = max_token_count as isize - token_count as isize;
990 let token_count_color = if remaining_tokens <= 0 {
991 Color::Error
992 } else if token_count as f32 / max_token_count as f32 >= 0.8 {
993 Color::Warning
994 } else {
995 Color::Muted
996 };
997
998 let mut token_count = h_flex()
999 .id("token_count")
1000 .gap_0p5()
1001 .child(
1002 Label::new(humanize_token_count(token_count))
1003 .size(LabelSize::Small)
1004 .color(token_count_color),
1005 )
1006 .child(Label::new("/").size(LabelSize::Small).color(Color::Muted))
1007 .child(
1008 Label::new(humanize_token_count(max_token_count))
1009 .size(LabelSize::Small)
1010 .color(Color::Muted),
1011 );
1012 if let Some(workspace) = self.workspace.clone() {
1013 token_count = token_count
1014 .tooltip(|window, cx| {
1015 Tooltip::with_meta(
1016 "Tokens Used by Inline Assistant",
1017 None,
1018 "Click to Open Assistant Panel",
1019 window,
1020 cx,
1021 )
1022 })
1023 .cursor_pointer()
1024 .on_mouse_down(gpui::MouseButton::Left, |_, _, cx| cx.stop_propagation())
1025 .on_click(move |_, window, cx| {
1026 cx.stop_propagation();
1027 workspace
1028 .update(cx, |workspace, cx| {
1029 workspace.focus_panel::<AssistantPanel>(window, cx)
1030 })
1031 .ok();
1032 });
1033 } else {
1034 token_count = token_count
1035 .cursor_default()
1036 .tooltip(Tooltip::text("Tokens Used by Inline Assistant"));
1037 }
1038
1039 Some(token_count)
1040 }
1041
1042 fn render_prompt_editor(&self, cx: &mut Context<Self>) -> impl IntoElement {
1043 let settings = ThemeSettings::get_global(cx);
1044 let text_style = TextStyle {
1045 color: if self.editor.read(cx).read_only(cx) {
1046 cx.theme().colors().text_disabled
1047 } else {
1048 cx.theme().colors().text
1049 },
1050 font_family: settings.buffer_font.family.clone(),
1051 font_fallbacks: settings.buffer_font.fallbacks.clone(),
1052 font_size: settings.buffer_font_size(cx).into(),
1053 font_weight: settings.buffer_font.weight,
1054 line_height: relative(settings.buffer_line_height.value()),
1055 ..Default::default()
1056 };
1057 EditorElement::new(
1058 &self.editor,
1059 EditorStyle {
1060 background: cx.theme().colors().editor_background,
1061 local_player: cx.theme().players().local(),
1062 text: text_style,
1063 ..Default::default()
1064 },
1065 )
1066 }
1067}
1068
1069#[derive(Debug)]
1070pub enum CodegenEvent {
1071 Finished,
1072}
1073
1074impl EventEmitter<CodegenEvent> for Codegen {}
1075
1076#[cfg(not(target_os = "windows"))]
1077const CLEAR_INPUT: &str = "\x15";
1078#[cfg(target_os = "windows")]
1079const CLEAR_INPUT: &str = "\x03";
1080const CARRIAGE_RETURN: &str = "\x0d";
1081
1082struct TerminalTransaction {
1083 terminal: Entity<Terminal>,
1084}
1085
1086impl TerminalTransaction {
1087 pub fn start(terminal: Entity<Terminal>) -> Self {
1088 Self { terminal }
1089 }
1090
1091 pub fn push(&mut self, hunk: String, cx: &mut App) {
1092 // Ensure that the assistant cannot accidentally execute commands that are streamed into the terminal
1093 let input = Self::sanitize_input(hunk);
1094 self.terminal
1095 .update(cx, |terminal, _| terminal.input(input));
1096 }
1097
1098 pub fn undo(&self, cx: &mut App) {
1099 self.terminal
1100 .update(cx, |terminal, _| terminal.input(CLEAR_INPUT.to_string()));
1101 }
1102
1103 pub fn complete(&self, cx: &mut App) {
1104 self.terminal.update(cx, |terminal, _| {
1105 terminal.input(CARRIAGE_RETURN.to_string())
1106 });
1107 }
1108
1109 fn sanitize_input(input: String) -> String {
1110 input.replace(['\r', '\n'], "")
1111 }
1112}
1113
1114pub struct Codegen {
1115 status: CodegenStatus,
1116 telemetry: Option<Arc<Telemetry>>,
1117 terminal: Entity<Terminal>,
1118 generation: Task<()>,
1119 message_id: Option<String>,
1120 transaction: Option<TerminalTransaction>,
1121}
1122
1123impl Codegen {
1124 pub fn new(terminal: Entity<Terminal>, telemetry: Option<Arc<Telemetry>>) -> Self {
1125 Self {
1126 terminal,
1127 telemetry,
1128 status: CodegenStatus::Idle,
1129 generation: Task::ready(()),
1130 message_id: None,
1131 transaction: None,
1132 }
1133 }
1134
1135 pub fn start(&mut self, prompt: LanguageModelRequest, cx: &mut Context<Self>) {
1136 let Some(model) = LanguageModelRegistry::read_global(cx).active_model() else {
1137 return;
1138 };
1139
1140 let model_api_key = model.api_key(cx);
1141 let http_client = cx.http_client();
1142 let telemetry = self.telemetry.clone();
1143 self.status = CodegenStatus::Pending;
1144 self.transaction = Some(TerminalTransaction::start(self.terminal.clone()));
1145 self.generation = cx.spawn(|this, mut cx| async move {
1146 let model_telemetry_id = model.telemetry_id();
1147 let model_provider_id = model.provider_id();
1148 let response = model.stream_completion_text(prompt, &cx).await;
1149 let generate = async {
1150 let message_id = response
1151 .as_ref()
1152 .ok()
1153 .and_then(|response| response.message_id.clone());
1154
1155 let (mut hunks_tx, mut hunks_rx) = mpsc::channel(1);
1156
1157 let task = cx.background_spawn({
1158 let message_id = message_id.clone();
1159 let executor = cx.background_executor().clone();
1160 async move {
1161 let mut response_latency = None;
1162 let request_start = Instant::now();
1163 let task = async {
1164 let mut chunks = response?.stream;
1165 while let Some(chunk) = chunks.next().await {
1166 if response_latency.is_none() {
1167 response_latency = Some(request_start.elapsed());
1168 }
1169 let chunk = chunk?;
1170 hunks_tx.send(chunk).await?;
1171 }
1172
1173 anyhow::Ok(())
1174 };
1175
1176 let result = task.await;
1177
1178 let error_message = result.as_ref().err().map(|error| error.to_string());
1179 report_assistant_event(
1180 AssistantEvent {
1181 conversation_id: None,
1182 kind: AssistantKind::InlineTerminal,
1183 message_id,
1184 phase: AssistantPhase::Response,
1185 model: model_telemetry_id,
1186 model_provider: model_provider_id.to_string(),
1187 response_latency,
1188 error_message,
1189 language_name: None,
1190 },
1191 telemetry,
1192 http_client,
1193 model_api_key,
1194 &executor,
1195 );
1196
1197 result?;
1198 anyhow::Ok(())
1199 }
1200 });
1201
1202 this.update(&mut cx, |this, _| {
1203 this.message_id = message_id;
1204 })?;
1205
1206 while let Some(hunk) = hunks_rx.next().await {
1207 this.update(&mut cx, |this, cx| {
1208 if let Some(transaction) = &mut this.transaction {
1209 transaction.push(hunk, cx);
1210 cx.notify();
1211 }
1212 })?;
1213 }
1214
1215 task.await?;
1216 anyhow::Ok(())
1217 };
1218
1219 let result = generate.await;
1220
1221 this.update(&mut cx, |this, cx| {
1222 if let Err(error) = result {
1223 this.status = CodegenStatus::Error(error);
1224 } else {
1225 this.status = CodegenStatus::Done;
1226 }
1227 cx.emit(CodegenEvent::Finished);
1228 cx.notify();
1229 })
1230 .ok();
1231 });
1232 cx.notify();
1233 }
1234
1235 pub fn stop(&mut self, cx: &mut Context<Self>) {
1236 self.status = CodegenStatus::Done;
1237 self.generation = Task::ready(());
1238 cx.emit(CodegenEvent::Finished);
1239 cx.notify();
1240 }
1241
1242 pub fn complete(&mut self, cx: &mut Context<Self>) {
1243 if let Some(transaction) = self.transaction.take() {
1244 transaction.complete(cx);
1245 }
1246 }
1247
1248 pub fn undo(&mut self, cx: &mut Context<Self>) {
1249 if let Some(transaction) = self.transaction.take() {
1250 transaction.undo(cx);
1251 }
1252 }
1253}
1254
1255enum CodegenStatus {
1256 Idle,
1257 Pending,
1258 Done,
1259 Error(anyhow::Error),
1260}