1use std::sync::Arc;
2
3use fuzzy::StringMatchCandidate;
4use gpui::{AppContext, DismissEvent, FocusHandle, FocusableView, Task, View, WeakModel, WeakView};
5use picker::{Picker, PickerDelegate};
6use ui::{prelude::*, ListItem};
7
8use crate::context_picker::{ConfirmBehavior, ContextPicker};
9use crate::context_store;
10use crate::thread::ThreadId;
11use crate::thread_store::ThreadStore;
12
13pub struct ThreadContextPicker {
14 picker: View<Picker<ThreadContextPickerDelegate>>,
15}
16
17impl ThreadContextPicker {
18 pub fn new(
19 thread_store: WeakModel<ThreadStore>,
20 context_picker: WeakView<ContextPicker>,
21 context_store: WeakModel<context_store::ContextStore>,
22 confirm_behavior: ConfirmBehavior,
23 cx: &mut ViewContext<Self>,
24 ) -> Self {
25 let delegate = ThreadContextPickerDelegate::new(
26 thread_store,
27 context_picker,
28 context_store,
29 confirm_behavior,
30 );
31 let picker = cx.new_view(|cx| Picker::uniform_list(delegate, cx));
32
33 ThreadContextPicker { picker }
34 }
35}
36
37impl FocusableView for ThreadContextPicker {
38 fn focus_handle(&self, cx: &AppContext) -> FocusHandle {
39 self.picker.focus_handle(cx)
40 }
41}
42
43impl Render for ThreadContextPicker {
44 fn render(&mut self, _cx: &mut ViewContext<Self>) -> impl IntoElement {
45 self.picker.clone()
46 }
47}
48
49#[derive(Debug, Clone)]
50struct ThreadContextEntry {
51 id: ThreadId,
52 summary: SharedString,
53}
54
55pub struct ThreadContextPickerDelegate {
56 thread_store: WeakModel<ThreadStore>,
57 context_picker: WeakView<ContextPicker>,
58 context_store: WeakModel<context_store::ContextStore>,
59 confirm_behavior: ConfirmBehavior,
60 matches: Vec<ThreadContextEntry>,
61 selected_index: usize,
62}
63
64impl ThreadContextPickerDelegate {
65 pub fn new(
66 thread_store: WeakModel<ThreadStore>,
67 context_picker: WeakView<ContextPicker>,
68 context_store: WeakModel<context_store::ContextStore>,
69 confirm_behavior: ConfirmBehavior,
70 ) -> Self {
71 ThreadContextPickerDelegate {
72 thread_store,
73 context_picker,
74 context_store,
75 confirm_behavior,
76 matches: Vec::new(),
77 selected_index: 0,
78 }
79 }
80}
81
82impl PickerDelegate for ThreadContextPickerDelegate {
83 type ListItem = ListItem;
84
85 fn match_count(&self) -> usize {
86 self.matches.len()
87 }
88
89 fn selected_index(&self) -> usize {
90 self.selected_index
91 }
92
93 fn set_selected_index(&mut self, ix: usize, _cx: &mut ViewContext<Picker<Self>>) {
94 self.selected_index = ix;
95 }
96
97 fn placeholder_text(&self, _cx: &mut WindowContext) -> Arc<str> {
98 "Search threads…".into()
99 }
100
101 fn update_matches(&mut self, query: String, cx: &mut ViewContext<Picker<Self>>) -> Task<()> {
102 let Ok(threads) = self.thread_store.update(cx, |this, cx| {
103 this.threads(cx)
104 .into_iter()
105 .map(|thread| {
106 const DEFAULT_SUMMARY: SharedString = SharedString::new_static("New Thread");
107
108 let id = thread.read(cx).id().clone();
109 let summary = thread.read(cx).summary().unwrap_or(DEFAULT_SUMMARY);
110 ThreadContextEntry { id, summary }
111 })
112 .collect::<Vec<_>>()
113 }) else {
114 return Task::ready(());
115 };
116
117 let executor = cx.background_executor().clone();
118 let search_task = cx.background_executor().spawn(async move {
119 if query.is_empty() {
120 threads
121 } else {
122 let candidates = threads
123 .iter()
124 .enumerate()
125 .map(|(id, thread)| StringMatchCandidate::new(id, &thread.summary))
126 .collect::<Vec<_>>();
127 let matches = fuzzy::match_strings(
128 &candidates,
129 &query,
130 false,
131 100,
132 &Default::default(),
133 executor,
134 )
135 .await;
136
137 matches
138 .into_iter()
139 .map(|mat| threads[mat.candidate_id].clone())
140 .collect()
141 }
142 });
143
144 cx.spawn(|this, mut cx| async move {
145 let matches = search_task.await;
146 this.update(&mut cx, |this, cx| {
147 this.delegate.matches = matches;
148 this.delegate.selected_index = 0;
149 cx.notify();
150 })
151 .ok();
152 })
153 }
154
155 fn confirm(&mut self, _secondary: bool, cx: &mut ViewContext<Picker<Self>>) {
156 let Some(entry) = self.matches.get(self.selected_index) else {
157 return;
158 };
159
160 let Some(thread_store) = self.thread_store.upgrade() else {
161 return;
162 };
163
164 let Some(thread) = thread_store.update(cx, |this, cx| this.open_thread(&entry.id, cx))
165 else {
166 return;
167 };
168
169 self.context_store
170 .update(cx, |context_store, cx| context_store.add_thread(thread, cx))
171 .ok();
172
173 match self.confirm_behavior {
174 ConfirmBehavior::KeepOpen => {}
175 ConfirmBehavior::Close => self.dismissed(cx),
176 }
177 }
178
179 fn dismissed(&mut self, cx: &mut ViewContext<Picker<Self>>) {
180 self.context_picker
181 .update(cx, |this, cx| {
182 this.reset_mode();
183 cx.emit(DismissEvent);
184 })
185 .ok();
186 }
187
188 fn render_match(
189 &self,
190 ix: usize,
191 selected: bool,
192 cx: &mut ViewContext<Picker<Self>>,
193 ) -> Option<Self::ListItem> {
194 let thread = &self.matches[ix];
195
196 let added = self.context_store.upgrade().map_or(false, |context_store| {
197 context_store.read(cx).includes_thread(&thread.id).is_some()
198 });
199
200 Some(
201 ListItem::new(ix)
202 .inset(true)
203 .toggle_state(selected)
204 .child(Label::new(thread.summary.clone()))
205 .when(added, |el| {
206 el.end_slot(
207 h_flex()
208 .gap_1()
209 .child(
210 Icon::new(IconName::Check)
211 .size(IconSize::Small)
212 .color(Color::Success),
213 )
214 .child(Label::new("Added").size(LabelSize::Small)),
215 )
216 }),
217 )
218 }
219}