1use std::{cmp::Reverse, rc::Rc, sync::Arc};
2
3use acp_thread::{AgentModelInfo, AgentModelList, AgentModelSelector};
4use agent_client_protocol as acp;
5use anyhow::Result;
6use collections::IndexMap;
7use futures::FutureExt;
8use fuzzy::{StringMatchCandidate, match_strings};
9use gpui::{Action, AsyncWindowContext, BackgroundExecutor, DismissEvent, Task, WeakEntity};
10use ordered_float::OrderedFloat;
11use picker::{Picker, PickerDelegate};
12use ui::{
13 AnyElement, App, Context, IntoElement, ListItem, ListItemSpacing, SharedString, Window,
14 prelude::*, rems,
15};
16use util::ResultExt;
17
18pub type AcpModelSelector = Picker<AcpModelPickerDelegate>;
19
20pub fn acp_model_selector(
21 session_id: acp::SessionId,
22 selector: Rc<dyn AgentModelSelector>,
23 window: &mut Window,
24 cx: &mut Context<AcpModelSelector>,
25) -> AcpModelSelector {
26 let delegate = AcpModelPickerDelegate::new(session_id, selector, window, cx);
27 Picker::list(delegate, window, cx)
28 .show_scrollbar(true)
29 .width(rems(20.))
30 .max_height(Some(rems(20.).into()))
31}
32
33enum AcpModelPickerEntry {
34 Separator(SharedString),
35 Model(AgentModelInfo),
36}
37
38pub struct AcpModelPickerDelegate {
39 session_id: acp::SessionId,
40 selector: Rc<dyn AgentModelSelector>,
41 filtered_entries: Vec<AcpModelPickerEntry>,
42 models: Option<AgentModelList>,
43 selected_index: usize,
44 selected_model: Option<AgentModelInfo>,
45 _refresh_models_task: Task<()>,
46}
47
48impl AcpModelPickerDelegate {
49 fn new(
50 session_id: acp::SessionId,
51 selector: Rc<dyn AgentModelSelector>,
52 window: &mut Window,
53 cx: &mut Context<AcpModelSelector>,
54 ) -> Self {
55 let mut rx = selector.watch(cx);
56 let refresh_models_task = cx.spawn_in(window, {
57 let session_id = session_id.clone();
58 async move |this, cx| {
59 async fn refresh(
60 this: &WeakEntity<Picker<AcpModelPickerDelegate>>,
61 session_id: &acp::SessionId,
62 cx: &mut AsyncWindowContext,
63 ) -> Result<()> {
64 let (models_task, selected_model_task) = this.update(cx, |this, cx| {
65 (
66 this.delegate.selector.list_models(cx),
67 this.delegate.selector.selected_model(session_id, cx),
68 )
69 })?;
70
71 let (models, selected_model) = futures::join!(models_task, selected_model_task);
72
73 this.update_in(cx, |this, window, cx| {
74 this.delegate.models = models.ok();
75 this.delegate.selected_model = selected_model.ok();
76 this.refresh(window, cx)
77 })
78 }
79
80 refresh(&this, &session_id, cx).await.log_err();
81 while let Ok(()) = rx.recv().await {
82 refresh(&this, &session_id, cx).await.log_err();
83 }
84 }
85 });
86
87 Self {
88 session_id,
89 selector,
90 filtered_entries: Vec::new(),
91 models: None,
92 selected_model: None,
93 selected_index: 0,
94 _refresh_models_task: refresh_models_task,
95 }
96 }
97
98 pub fn active_model(&self) -> Option<&AgentModelInfo> {
99 self.selected_model.as_ref()
100 }
101}
102
103impl PickerDelegate for AcpModelPickerDelegate {
104 type ListItem = AnyElement;
105
106 fn match_count(&self) -> usize {
107 self.filtered_entries.len()
108 }
109
110 fn selected_index(&self) -> usize {
111 self.selected_index
112 }
113
114 fn set_selected_index(&mut self, ix: usize, _: &mut Window, cx: &mut Context<Picker<Self>>) {
115 self.selected_index = ix.min(self.filtered_entries.len().saturating_sub(1));
116 cx.notify();
117 }
118
119 fn can_select(
120 &mut self,
121 ix: usize,
122 _window: &mut Window,
123 _cx: &mut Context<Picker<Self>>,
124 ) -> bool {
125 match self.filtered_entries.get(ix) {
126 Some(AcpModelPickerEntry::Model(_)) => true,
127 Some(AcpModelPickerEntry::Separator(_)) | None => false,
128 }
129 }
130
131 fn placeholder_text(&self, _window: &mut Window, _cx: &mut App) -> Arc<str> {
132 "Select a model…".into()
133 }
134
135 fn update_matches(
136 &mut self,
137 query: String,
138 window: &mut Window,
139 cx: &mut Context<Picker<Self>>,
140 ) -> Task<()> {
141 cx.spawn_in(window, async move |this, cx| {
142 let filtered_models = match this
143 .read_with(cx, |this, cx| {
144 this.delegate.models.clone().map(move |models| {
145 fuzzy_search(models, query, cx.background_executor().clone())
146 })
147 })
148 .ok()
149 .flatten()
150 {
151 Some(task) => task.await,
152 None => AgentModelList::Flat(vec![]),
153 };
154
155 this.update_in(cx, |this, window, cx| {
156 this.delegate.filtered_entries =
157 info_list_to_picker_entries(filtered_models).collect();
158 // Finds the currently selected model in the list
159 let new_index = this
160 .delegate
161 .selected_model
162 .as_ref()
163 .and_then(|selected| {
164 this.delegate.filtered_entries.iter().position(|entry| {
165 if let AcpModelPickerEntry::Model(model_info) = entry {
166 model_info.id == selected.id
167 } else {
168 false
169 }
170 })
171 })
172 .unwrap_or(0);
173 this.set_selected_index(new_index, Some(picker::Direction::Down), true, window, cx);
174 cx.notify();
175 })
176 .ok();
177 })
178 }
179
180 fn confirm(&mut self, _secondary: bool, window: &mut Window, cx: &mut Context<Picker<Self>>) {
181 if let Some(AcpModelPickerEntry::Model(model_info)) =
182 self.filtered_entries.get(self.selected_index)
183 {
184 self.selector
185 .select_model(self.session_id.clone(), model_info.id.clone(), cx)
186 .detach_and_log_err(cx);
187 self.selected_model = Some(model_info.clone());
188 let current_index = self.selected_index;
189 self.set_selected_index(current_index, window, cx);
190
191 cx.emit(DismissEvent);
192 }
193 }
194
195 fn dismissed(&mut self, window: &mut Window, cx: &mut Context<Picker<Self>>) {
196 cx.defer_in(window, |picker, window, cx| {
197 picker.set_query("", window, cx);
198 });
199 }
200
201 fn render_match(
202 &self,
203 ix: usize,
204 selected: bool,
205 _: &mut Window,
206 cx: &mut Context<Picker<Self>>,
207 ) -> Option<Self::ListItem> {
208 match self.filtered_entries.get(ix)? {
209 AcpModelPickerEntry::Separator(title) => Some(
210 div()
211 .px_2()
212 .pb_1()
213 .when(ix > 1, |this| {
214 this.mt_1()
215 .pt_2()
216 .border_t_1()
217 .border_color(cx.theme().colors().border_variant)
218 })
219 .child(
220 Label::new(title)
221 .size(LabelSize::XSmall)
222 .color(Color::Muted),
223 )
224 .into_any_element(),
225 ),
226 AcpModelPickerEntry::Model(model_info) => {
227 let is_selected = Some(model_info) == self.selected_model.as_ref();
228
229 let model_icon_color = if is_selected {
230 Color::Accent
231 } else {
232 Color::Muted
233 };
234
235 Some(
236 ListItem::new(ix)
237 .inset(true)
238 .spacing(ListItemSpacing::Sparse)
239 .toggle_state(selected)
240 .start_slot::<Icon>(model_info.icon.map(|icon| {
241 Icon::new(icon)
242 .color(model_icon_color)
243 .size(IconSize::Small)
244 }))
245 .child(
246 h_flex()
247 .w_full()
248 .pl_0p5()
249 .gap_1p5()
250 .w(px(240.))
251 .child(Label::new(model_info.name.clone()).truncate()),
252 )
253 .end_slot(div().pr_3().when(is_selected, |this| {
254 this.child(
255 Icon::new(IconName::Check)
256 .color(Color::Accent)
257 .size(IconSize::Small),
258 )
259 }))
260 .into_any_element(),
261 )
262 }
263 }
264 }
265
266 fn render_footer(
267 &self,
268 _: &mut Window,
269 cx: &mut Context<Picker<Self>>,
270 ) -> Option<gpui::AnyElement> {
271 Some(
272 h_flex()
273 .w_full()
274 .border_t_1()
275 .border_color(cx.theme().colors().border_variant)
276 .p_1()
277 .gap_4()
278 .justify_between()
279 .child(
280 Button::new("configure", "Configure")
281 .icon(IconName::Settings)
282 .icon_size(IconSize::Small)
283 .icon_color(Color::Muted)
284 .icon_position(IconPosition::Start)
285 .on_click(|_, window, cx| {
286 window.dispatch_action(
287 zed_actions::agent::OpenSettings.boxed_clone(),
288 cx,
289 );
290 }),
291 )
292 .into_any(),
293 )
294 }
295}
296
297fn info_list_to_picker_entries(
298 model_list: AgentModelList,
299) -> impl Iterator<Item = AcpModelPickerEntry> {
300 match model_list {
301 AgentModelList::Flat(list) => {
302 itertools::Either::Left(list.into_iter().map(AcpModelPickerEntry::Model))
303 }
304 AgentModelList::Grouped(index_map) => {
305 itertools::Either::Right(index_map.into_iter().flat_map(|(group_name, models)| {
306 std::iter::once(AcpModelPickerEntry::Separator(group_name.0))
307 .chain(models.into_iter().map(AcpModelPickerEntry::Model))
308 }))
309 }
310 }
311}
312
313async fn fuzzy_search(
314 model_list: AgentModelList,
315 query: String,
316 executor: BackgroundExecutor,
317) -> AgentModelList {
318 async fn fuzzy_search_list(
319 model_list: Vec<AgentModelInfo>,
320 query: &str,
321 executor: BackgroundExecutor,
322 ) -> Vec<AgentModelInfo> {
323 let candidates = model_list
324 .iter()
325 .enumerate()
326 .map(|(ix, model)| {
327 StringMatchCandidate::new(ix, &format!("{}/{}", model.id, model.name))
328 })
329 .collect::<Vec<_>>();
330 let mut matches = match_strings(
331 &candidates,
332 query,
333 false,
334 true,
335 100,
336 &Default::default(),
337 executor,
338 )
339 .await;
340
341 matches.sort_unstable_by_key(|mat| {
342 let candidate = &candidates[mat.candidate_id];
343 (Reverse(OrderedFloat(mat.score)), candidate.id)
344 });
345
346 matches
347 .into_iter()
348 .map(|mat| model_list[mat.candidate_id].clone())
349 .collect()
350 }
351
352 match model_list {
353 AgentModelList::Flat(model_list) => {
354 AgentModelList::Flat(fuzzy_search_list(model_list, &query, executor).await)
355 }
356 AgentModelList::Grouped(index_map) => {
357 let groups =
358 futures::future::join_all(index_map.into_iter().map(|(group_name, models)| {
359 fuzzy_search_list(models, &query, executor.clone())
360 .map(|results| (group_name, results))
361 }))
362 .await;
363 AgentModelList::Grouped(IndexMap::from_iter(
364 groups
365 .into_iter()
366 .filter(|(_, results)| !results.is_empty()),
367 ))
368 }
369 }
370}
371
372#[cfg(test)]
373mod tests {
374 use gpui::TestAppContext;
375
376 use super::*;
377
378 fn create_model_list(grouped_models: Vec<(&str, Vec<&str>)>) -> AgentModelList {
379 AgentModelList::Grouped(IndexMap::from_iter(grouped_models.into_iter().map(
380 |(group, models)| {
381 (
382 acp_thread::AgentModelGroupName(group.to_string().into()),
383 models
384 .into_iter()
385 .map(|model| acp_thread::AgentModelInfo {
386 id: acp_thread::AgentModelId(model.to_string().into()),
387 name: model.to_string().into(),
388 icon: None,
389 })
390 .collect::<Vec<_>>(),
391 )
392 },
393 )))
394 }
395
396 fn assert_models_eq(result: AgentModelList, expected: Vec<(&str, Vec<&str>)>) {
397 let AgentModelList::Grouped(groups) = result else {
398 panic!("Expected LanguageModelInfoList::Grouped, got {:?}", result);
399 };
400
401 assert_eq!(
402 groups.len(),
403 expected.len(),
404 "Number of groups doesn't match"
405 );
406
407 for (i, (expected_group, expected_models)) in expected.iter().enumerate() {
408 let (actual_group, actual_models) = groups.get_index(i).unwrap();
409 assert_eq!(
410 actual_group.0.as_ref(),
411 *expected_group,
412 "Group at position {} doesn't match expected group",
413 i
414 );
415 assert_eq!(
416 actual_models.len(),
417 expected_models.len(),
418 "Number of models in group {} doesn't match",
419 expected_group
420 );
421
422 for (j, expected_model_name) in expected_models.iter().enumerate() {
423 assert_eq!(
424 actual_models[j].name, *expected_model_name,
425 "Model at position {} in group {} doesn't match expected model",
426 j, expected_group
427 );
428 }
429 }
430 }
431
432 #[gpui::test]
433 async fn test_fuzzy_match(cx: &mut TestAppContext) {
434 let models = create_model_list(vec![
435 (
436 "zed",
437 vec![
438 "Claude 3.7 Sonnet",
439 "Claude 3.7 Sonnet Thinking",
440 "gpt-4.1",
441 "gpt-4.1-nano",
442 ],
443 ),
444 ("openai", vec!["gpt-3.5-turbo", "gpt-4.1", "gpt-4.1-nano"]),
445 ("ollama", vec!["mistral", "deepseek"]),
446 ]);
447
448 // Results should preserve models order whenever possible.
449 // In the case below, `zed/gpt-4.1` and `openai/gpt-4.1` have identical
450 // similarity scores, but `zed/gpt-4.1` was higher in the models list,
451 // so it should appear first in the results.
452 let results = fuzzy_search(models.clone(), "41".into(), cx.executor()).await;
453 assert_models_eq(
454 results,
455 vec![
456 ("zed", vec!["gpt-4.1", "gpt-4.1-nano"]),
457 ("openai", vec!["gpt-4.1", "gpt-4.1-nano"]),
458 ],
459 );
460
461 // Fuzzy search
462 let results = fuzzy_search(models.clone(), "4n".into(), cx.executor()).await;
463 assert_models_eq(
464 results,
465 vec![
466 ("zed", vec!["gpt-4.1-nano"]),
467 ("openai", vec!["gpt-4.1-nano"]),
468 ],
469 );
470 }
471}