1use fuzzy::{StringMatch, StringMatchCandidate};
2use gpui::{
3 AnyElement, AppContext, DismissEvent, EventEmitter, FocusHandle, FocusableView, Result,
4 Subscription, Task, View, ViewContext, WeakView,
5};
6use ordered_float::OrderedFloat;
7use picker::{
8 highlighted_match_with_paths::{HighlightedMatchWithPaths, HighlightedText},
9 Picker, PickerDelegate,
10};
11use std::{path::Path, sync::Arc};
12use ui::{prelude::*, tooltip_container, ListItem, ListItemSpacing, Tooltip};
13use util::paths::PathExt;
14use workspace::{ModalView, Workspace, WorkspaceId, WorkspaceLocation, WORKSPACE_DB};
15
16gpui::actions!(projects, [OpenRecent]);
17
18pub fn init(cx: &mut AppContext) {
19 cx.observe_new_views(RecentProjects::register).detach();
20}
21
22pub struct RecentProjects {
23 pub picker: View<Picker<RecentProjectsDelegate>>,
24 rem_width: f32,
25 _subscription: Subscription,
26}
27
28impl ModalView for RecentProjects {}
29
30impl RecentProjects {
31 fn new(delegate: RecentProjectsDelegate, rem_width: f32, cx: &mut ViewContext<Self>) -> Self {
32 let picker = cx.new_view(|cx| {
33 // We want to use a list when we render paths, because the items can have different heights (multiple paths).
34 if delegate.render_paths {
35 Picker::list(delegate, cx)
36 } else {
37 Picker::uniform_list(delegate, cx)
38 }
39 });
40 let _subscription = cx.subscribe(&picker, |_, _, _, cx| cx.emit(DismissEvent));
41 // We do not want to block the UI on a potentially lengthy call to DB, so we're gonna swap
42 // out workspace locations once the future runs to completion.
43 cx.spawn(|this, mut cx| async move {
44 let workspaces = WORKSPACE_DB
45 .recent_workspaces_on_disk()
46 .await
47 .unwrap_or_default();
48
49 this.update(&mut cx, move |this, cx| {
50 this.picker.update(cx, move |picker, cx| {
51 picker.delegate.workspaces = workspaces;
52 picker.update_matches(picker.query(cx), cx)
53 })
54 })
55 .ok()
56 })
57 .detach();
58 Self {
59 picker,
60 rem_width,
61 _subscription,
62 }
63 }
64
65 fn register(workspace: &mut Workspace, _: &mut ViewContext<Workspace>) {
66 workspace.register_action(|workspace, _: &OpenRecent, cx| {
67 let Some(recent_projects) = workspace.active_modal::<Self>(cx) else {
68 if let Some(handler) = Self::open(workspace, cx) {
69 handler.detach_and_log_err(cx);
70 }
71 return;
72 };
73
74 recent_projects.update(cx, |recent_projects, cx| {
75 recent_projects
76 .picker
77 .update(cx, |picker, cx| picker.cycle_selection(cx))
78 });
79 });
80 }
81
82 fn open(_: &mut Workspace, cx: &mut ViewContext<Workspace>) -> Option<Task<Result<()>>> {
83 Some(cx.spawn(|workspace, mut cx| async move {
84 workspace.update(&mut cx, |workspace, cx| {
85 let weak_workspace = cx.view().downgrade();
86 workspace.toggle_modal(cx, |cx| {
87 let delegate = RecentProjectsDelegate::new(weak_workspace, true);
88
89 let modal = Self::new(delegate, 34., cx);
90 modal
91 });
92 })?;
93 Ok(())
94 }))
95 }
96
97 pub fn open_popover(workspace: WeakView<Workspace>, cx: &mut WindowContext<'_>) -> View<Self> {
98 cx.new_view(|cx| Self::new(RecentProjectsDelegate::new(workspace, false), 20., cx))
99 }
100}
101
102impl EventEmitter<DismissEvent> for RecentProjects {}
103
104impl FocusableView for RecentProjects {
105 fn focus_handle(&self, cx: &AppContext) -> FocusHandle {
106 self.picker.focus_handle(cx)
107 }
108}
109
110impl Render for RecentProjects {
111 fn render(&mut self, cx: &mut ViewContext<Self>) -> impl IntoElement {
112 v_flex()
113 .w(rems(self.rem_width))
114 .child(self.picker.clone())
115 .on_mouse_down_out(cx.listener(|this, _, cx| {
116 this.picker.update(cx, |this, cx| {
117 this.cancel(&Default::default(), cx);
118 })
119 }))
120 }
121}
122
123pub struct RecentProjectsDelegate {
124 workspace: WeakView<Workspace>,
125 workspaces: Vec<(WorkspaceId, WorkspaceLocation)>,
126 selected_match_index: usize,
127 matches: Vec<StringMatch>,
128 render_paths: bool,
129 // Flag to reset index when there is a new query vs not reset index when user delete an item
130 reset_selected_match_index: bool,
131}
132
133impl RecentProjectsDelegate {
134 fn new(workspace: WeakView<Workspace>, render_paths: bool) -> Self {
135 Self {
136 workspace,
137 workspaces: vec![],
138 selected_match_index: 0,
139 matches: Default::default(),
140 render_paths,
141 reset_selected_match_index: true,
142 }
143 }
144}
145impl EventEmitter<DismissEvent> for RecentProjectsDelegate {}
146impl PickerDelegate for RecentProjectsDelegate {
147 type ListItem = ListItem;
148
149 fn placeholder_text(&self, cx: &mut WindowContext) -> Arc<str> {
150 Arc::from(format!(
151 "{} reuses the window, {} opens a new one",
152 cx.keystroke_text_for(&menu::Confirm),
153 cx.keystroke_text_for(&menu::SecondaryConfirm),
154 ))
155 }
156
157 fn match_count(&self) -> usize {
158 self.matches.len()
159 }
160
161 fn selected_index(&self) -> usize {
162 self.selected_match_index
163 }
164
165 fn set_selected_index(&mut self, ix: usize, _cx: &mut ViewContext<Picker<Self>>) {
166 self.selected_match_index = ix;
167 }
168
169 fn update_matches(
170 &mut self,
171 query: String,
172 cx: &mut ViewContext<Picker<Self>>,
173 ) -> gpui::Task<()> {
174 let query = query.trim_start();
175 let smart_case = query.chars().any(|c| c.is_uppercase());
176 let candidates = self
177 .workspaces
178 .iter()
179 .enumerate()
180 .map(|(id, (_, location))| {
181 let combined_string = location
182 .paths()
183 .iter()
184 .map(|path| path.compact().to_string_lossy().into_owned())
185 .collect::<Vec<_>>()
186 .join("");
187 StringMatchCandidate::new(id, combined_string)
188 })
189 .collect::<Vec<_>>();
190 self.matches = smol::block_on(fuzzy::match_strings(
191 candidates.as_slice(),
192 query,
193 smart_case,
194 100,
195 &Default::default(),
196 cx.background_executor().clone(),
197 ));
198 self.matches.sort_unstable_by_key(|m| m.candidate_id);
199
200 if self.reset_selected_match_index {
201 self.selected_match_index = self
202 .matches
203 .iter()
204 .enumerate()
205 .rev()
206 .max_by_key(|(_, m)| OrderedFloat(m.score))
207 .map(|(ix, _)| ix)
208 .unwrap_or(0);
209 }
210 self.reset_selected_match_index = true;
211 Task::ready(())
212 }
213
214 fn confirm(&mut self, secondary: bool, cx: &mut ViewContext<Picker<Self>>) {
215 if let Some((selected_match, workspace)) = self
216 .matches
217 .get(self.selected_index())
218 .zip(self.workspace.upgrade())
219 {
220 let (candidate_workspace_id, candidate_workspace_location) =
221 &self.workspaces[selected_match.candidate_id];
222 let replace_current_window = !secondary;
223 workspace
224 .update(cx, |workspace, cx| {
225 if workspace.database_id() != *candidate_workspace_id {
226 workspace.open_workspace_for_paths(
227 replace_current_window,
228 candidate_workspace_location.paths().as_ref().clone(),
229 cx,
230 )
231 } else {
232 Task::ready(Ok(()))
233 }
234 })
235 .detach_and_log_err(cx);
236 cx.emit(DismissEvent);
237 }
238 }
239
240 fn dismissed(&mut self, _: &mut ViewContext<Picker<Self>>) {}
241
242 fn render_match(
243 &self,
244 ix: usize,
245 selected: bool,
246 cx: &mut ViewContext<Picker<Self>>,
247 ) -> Option<Self::ListItem> {
248 let Some(hit) = self.matches.get(ix) else {
249 return None;
250 };
251
252 let (workspace_id, location) = &self.workspaces[hit.candidate_id];
253 let is_current_workspace = self.is_current_workspace(*workspace_id, cx);
254
255 let mut path_start_offset = 0;
256 let (match_labels, paths): (Vec<_>, Vec<_>) = location
257 .paths()
258 .iter()
259 .map(|path| {
260 let path = path.compact();
261 let highlighted_text =
262 highlights_for_path(path.as_ref(), &hit.positions, path_start_offset);
263
264 path_start_offset += highlighted_text.1.char_count;
265 highlighted_text
266 })
267 .unzip();
268
269 let highlighted_match = HighlightedMatchWithPaths {
270 match_label: HighlightedText::join(
271 match_labels.into_iter().filter_map(|name| name),
272 ", ",
273 ),
274 paths: if self.render_paths { paths } else { Vec::new() },
275 };
276 Some(
277 ListItem::new(ix)
278 .inset(true)
279 .spacing(ListItemSpacing::Sparse)
280 .selected(selected)
281 .child(highlighted_match.clone().render(cx))
282 .when(!is_current_workspace, |el| {
283 let delete_button = div()
284 .child(
285 IconButton::new("delete", IconName::Close)
286 .icon_size(IconSize::Small)
287 .on_click(cx.listener(move |this, _event, cx| {
288 cx.stop_propagation();
289 cx.prevent_default();
290
291 this.delegate.delete_recent_project(ix, cx)
292 }))
293 .tooltip(|cx| Tooltip::text("Delete From Recent Projects...", cx)),
294 )
295 .into_any_element();
296
297 if self.selected_index() == ix {
298 el.end_slot::<AnyElement>(delete_button)
299 } else {
300 el.end_hover_slot::<AnyElement>(delete_button)
301 }
302 })
303 .tooltip(move |cx| {
304 let tooltip_highlighted_location = highlighted_match.clone();
305 cx.new_view(move |_| MatchTooltip {
306 highlighted_location: tooltip_highlighted_location,
307 })
308 .into()
309 }),
310 )
311 }
312}
313
314// Compute the highlighted text for the name and path
315fn highlights_for_path(
316 path: &Path,
317 match_positions: &Vec<usize>,
318 path_start_offset: usize,
319) -> (Option<HighlightedText>, HighlightedText) {
320 let path_string = path.to_string_lossy();
321 let path_char_count = path_string.chars().count();
322 // Get the subset of match highlight positions that line up with the given path.
323 // Also adjusts them to start at the path start
324 let path_positions = match_positions
325 .iter()
326 .copied()
327 .skip_while(|position| *position < path_start_offset)
328 .take_while(|position| *position < path_start_offset + path_char_count)
329 .map(|position| position - path_start_offset)
330 .collect::<Vec<_>>();
331
332 // Again subset the highlight positions to just those that line up with the file_name
333 // again adjusted to the start of the file_name
334 let file_name_text_and_positions = path.file_name().map(|file_name| {
335 let text = file_name.to_string_lossy();
336 let char_count = text.chars().count();
337 let file_name_start = path_char_count - char_count;
338 let highlight_positions = path_positions
339 .iter()
340 .copied()
341 .skip_while(|position| *position < file_name_start)
342 .take_while(|position| *position < file_name_start + char_count)
343 .map(|position| position - file_name_start)
344 .collect::<Vec<_>>();
345 HighlightedText {
346 text: text.to_string(),
347 highlight_positions,
348 char_count,
349 }
350 });
351
352 (
353 file_name_text_and_positions,
354 HighlightedText {
355 text: path_string.to_string(),
356 highlight_positions: path_positions,
357 char_count: path_char_count,
358 },
359 )
360}
361
362impl RecentProjectsDelegate {
363 fn delete_recent_project(&self, ix: usize, cx: &mut ViewContext<Picker<Self>>) {
364 if let Some(selected_match) = self.matches.get(ix) {
365 let (workspace_id, _) = self.workspaces[selected_match.candidate_id];
366 cx.spawn(move |this, mut cx| async move {
367 let _ = WORKSPACE_DB.delete_workspace_by_id(workspace_id).await;
368 let workspaces = WORKSPACE_DB
369 .recent_workspaces_on_disk()
370 .await
371 .unwrap_or_default();
372 this.update(&mut cx, move |picker, cx| {
373 picker.delegate.workspaces = workspaces;
374 picker.delegate.set_selected_index(ix - 1, cx);
375 picker.delegate.reset_selected_match_index = false;
376 picker.update_matches(picker.query(cx), cx)
377 })
378 })
379 .detach();
380 }
381 }
382
383 fn is_current_workspace(
384 &self,
385 workspace_id: WorkspaceId,
386 cx: &mut ViewContext<Picker<Self>>,
387 ) -> bool {
388 if let Some(workspace) = self.workspace.upgrade() {
389 let workspace = workspace.read(cx);
390 if workspace_id == workspace.database_id() {
391 return true;
392 }
393 }
394
395 false
396 }
397}
398struct MatchTooltip {
399 highlighted_location: HighlightedMatchWithPaths,
400}
401
402impl Render for MatchTooltip {
403 fn render(&mut self, cx: &mut ViewContext<Self>) -> impl IntoElement {
404 tooltip_container(cx, |div, _| {
405 self.highlighted_location.render_paths_children(div)
406 })
407 }
408}