1use file_finder::file_finder_settings::FileFinderSettings;
2use file_icons::FileIcons;
3use fuzzy::{StringMatch, StringMatchCandidate, match_strings};
4use gpui::{
5 App, Context, DismissEvent, Entity, EventEmitter, Focusable, ParentElement, Render, Styled,
6 WeakEntity, Window, actions,
7};
8use language::{LanguageMatcher, LanguageName, LanguageRegistry};
9use paths::snippets_dir;
10use picker::{Picker, PickerDelegate};
11use settings::Settings;
12use std::{
13 borrow::{Borrow, Cow},
14 collections::HashSet,
15 fs,
16 path::Path,
17 sync::Arc,
18};
19use ui::{HighlightedLabel, ListItem, ListItemSpacing, prelude::*};
20use util::ResultExt;
21use workspace::{ModalView, OpenOptions, OpenVisible, Workspace, notifications::NotifyResultExt};
22
23#[derive(Eq, Hash, PartialEq)]
24struct ScopeName(Cow<'static, str>);
25
26struct ScopeFileName(Cow<'static, str>);
27
28impl ScopeFileName {
29 fn with_extension(self) -> String {
30 format!("{}.json", self.0)
31 }
32}
33
34const GLOBAL_SCOPE_NAME: &str = "global";
35const GLOBAL_SCOPE_FILE_NAME: &str = "snippets";
36
37impl From<ScopeName> for ScopeFileName {
38 fn from(value: ScopeName) -> Self {
39 if value.0 == GLOBAL_SCOPE_NAME {
40 ScopeFileName(Cow::Borrowed(GLOBAL_SCOPE_FILE_NAME))
41 } else {
42 ScopeFileName(value.0)
43 }
44 }
45}
46
47impl From<ScopeFileName> for ScopeName {
48 fn from(value: ScopeFileName) -> Self {
49 if value.0 == GLOBAL_SCOPE_FILE_NAME {
50 ScopeName(Cow::Borrowed(GLOBAL_SCOPE_NAME))
51 } else {
52 ScopeName(value.0)
53 }
54 }
55}
56
57actions!(
58 snippets,
59 [
60 /// Opens the snippets configuration file.
61 ConfigureSnippets,
62 /// Opens the snippets folder in the file manager.
63 OpenFolder
64 ]
65);
66
67pub fn init(cx: &mut App) {
68 cx.observe_new(register).detach();
69}
70
71fn register(workspace: &mut Workspace, _window: Option<&mut Window>, _: &mut Context<Workspace>) {
72 workspace.register_action(configure_snippets);
73 workspace.register_action(open_folder);
74}
75
76fn configure_snippets(
77 workspace: &mut Workspace,
78 _: &ConfigureSnippets,
79 window: &mut Window,
80 cx: &mut Context<Workspace>,
81) {
82 let language_registry = workspace.app_state().languages.clone();
83 let workspace_handle = workspace.weak_handle();
84
85 workspace.toggle_modal(window, cx, move |window, cx| {
86 ScopeSelector::new(language_registry, workspace_handle, window, cx)
87 });
88}
89
90fn open_folder(
91 workspace: &mut Workspace,
92 _: &OpenFolder,
93 _: &mut Window,
94 cx: &mut Context<Workspace>,
95) {
96 fs::create_dir_all(snippets_dir()).notify_err(workspace, cx);
97 cx.open_with_system(snippets_dir().borrow());
98}
99
100pub struct ScopeSelector {
101 picker: Entity<Picker<ScopeSelectorDelegate>>,
102}
103
104impl ScopeSelector {
105 fn new(
106 language_registry: Arc<LanguageRegistry>,
107 workspace: WeakEntity<Workspace>,
108 window: &mut Window,
109 cx: &mut Context<Self>,
110 ) -> Self {
111 let delegate =
112 ScopeSelectorDelegate::new(workspace, cx.entity().downgrade(), language_registry);
113
114 let picker = cx.new(|cx| Picker::uniform_list(delegate, window, cx));
115
116 Self { picker }
117 }
118}
119
120impl ModalView for ScopeSelector {}
121
122impl EventEmitter<DismissEvent> for ScopeSelector {}
123
124impl Focusable for ScopeSelector {
125 fn focus_handle(&self, cx: &App) -> gpui::FocusHandle {
126 self.picker.focus_handle(cx)
127 }
128}
129
130impl Render for ScopeSelector {
131 fn render(&mut self, _window: &mut Window, _cx: &mut Context<Self>) -> impl IntoElement {
132 v_flex().w(rems(34.)).child(self.picker.clone())
133 }
134}
135
136pub struct ScopeSelectorDelegate {
137 workspace: WeakEntity<Workspace>,
138 scope_selector: WeakEntity<ScopeSelector>,
139 language_registry: Arc<LanguageRegistry>,
140 candidates: Vec<StringMatchCandidate>,
141 matches: Vec<StringMatch>,
142 selected_index: usize,
143 existing_scopes: HashSet<ScopeName>,
144}
145
146impl ScopeSelectorDelegate {
147 fn new(
148 workspace: WeakEntity<Workspace>,
149 scope_selector: WeakEntity<ScopeSelector>,
150 language_registry: Arc<LanguageRegistry>,
151 ) -> Self {
152 let languages = language_registry.language_names().into_iter();
153
154 let candidates = std::iter::once(LanguageName::new(GLOBAL_SCOPE_NAME))
155 .chain(languages)
156 .enumerate()
157 .map(|(candidate_id, name)| StringMatchCandidate::new(candidate_id, name.as_ref()))
158 .collect::<Vec<_>>();
159
160 let mut existing_scopes = HashSet::new();
161
162 if let Some(read_dir) = fs::read_dir(snippets_dir()).log_err() {
163 for entry in read_dir {
164 if let Some(entry) = entry.log_err() {
165 let path = entry.path();
166 if let (Some(stem), Some(extension)) = (path.file_stem(), path.extension())
167 && extension.to_os_string().to_str() == Some("json")
168 && let Ok(file_name) = stem.to_os_string().into_string() {
169 existing_scopes
170 .insert(ScopeName::from(ScopeFileName(Cow::Owned(file_name))));
171 }
172 }
173 }
174 }
175
176 Self {
177 workspace,
178 scope_selector,
179 language_registry,
180 candidates,
181 matches: Vec::new(),
182 selected_index: 0,
183 existing_scopes,
184 }
185 }
186
187 fn scope_icon(&self, matcher: &LanguageMatcher, cx: &App) -> Option<Icon> {
188 matcher
189 .path_suffixes
190 .iter()
191 .find_map(|extension| FileIcons::get_icon(Path::new(extension), cx))
192 .or(FileIcons::get(cx).get_icon_for_type("default", cx))
193 .map(Icon::from_path)
194 .map(|icon| icon.color(Color::Muted))
195 }
196}
197
198impl PickerDelegate for ScopeSelectorDelegate {
199 type ListItem = ListItem;
200
201 fn placeholder_text(&self, _window: &mut Window, _: &mut App) -> Arc<str> {
202 "Select snippet scope...".into()
203 }
204
205 fn match_count(&self) -> usize {
206 self.matches.len()
207 }
208
209 fn confirm(&mut self, _: bool, window: &mut Window, cx: &mut Context<Picker<Self>>) {
210 if let Some(mat) = self.matches.get(self.selected_index) {
211 let scope_name = self.candidates[mat.candidate_id].string.clone();
212 let language = self.language_registry.language_for_name(&scope_name);
213
214 if let Some(workspace) = self.workspace.upgrade() {
215 cx.spawn_in(window, async move |_, cx| {
216 let scope_file_name = ScopeFileName(match scope_name.to_lowercase().as_str() {
217 GLOBAL_SCOPE_NAME => Cow::Borrowed(GLOBAL_SCOPE_FILE_NAME),
218 _ => Cow::Owned(language.await?.lsp_id()),
219 });
220
221 workspace.update_in(cx, |workspace, window, cx| {
222 workspace
223 .open_abs_path(
224 snippets_dir().join(scope_file_name.with_extension()),
225 OpenOptions {
226 visible: Some(OpenVisible::None),
227 ..Default::default()
228 },
229 window,
230 cx,
231 )
232 .detach();
233 })
234 })
235 .detach_and_log_err(cx);
236 };
237 }
238 self.dismissed(window, cx);
239 }
240
241 fn dismissed(&mut self, _: &mut Window, cx: &mut Context<Picker<Self>>) {
242 self.scope_selector
243 .update(cx, |_, cx| cx.emit(DismissEvent))
244 .log_err();
245 }
246
247 fn selected_index(&self) -> usize {
248 self.selected_index
249 }
250
251 fn set_selected_index(
252 &mut self,
253 ix: usize,
254 _window: &mut Window,
255 _: &mut Context<Picker<Self>>,
256 ) {
257 self.selected_index = ix;
258 }
259
260 fn update_matches(
261 &mut self,
262 query: String,
263 window: &mut Window,
264 cx: &mut Context<Picker<Self>>,
265 ) -> gpui::Task<()> {
266 let background = cx.background_executor().clone();
267 let candidates = self.candidates.clone();
268 cx.spawn_in(window, async move |this, cx| {
269 let matches = if query.is_empty() {
270 candidates
271 .into_iter()
272 .enumerate()
273 .map(|(index, candidate)| StringMatch {
274 candidate_id: index,
275 string: candidate.string,
276 positions: Vec::new(),
277 score: 0.0,
278 })
279 .collect()
280 } else {
281 match_strings(
282 &candidates,
283 &query,
284 false,
285 true,
286 100,
287 &Default::default(),
288 background,
289 )
290 .await
291 };
292
293 this.update(cx, |this, cx| {
294 let delegate = &mut this.delegate;
295 delegate.matches = matches;
296 delegate.selected_index = delegate
297 .selected_index
298 .min(delegate.matches.len().saturating_sub(1));
299 cx.notify();
300 })
301 .log_err();
302 })
303 }
304
305 fn render_match(
306 &self,
307 ix: usize,
308 selected: bool,
309 _window: &mut Window,
310 cx: &mut Context<Picker<Self>>,
311 ) -> Option<Self::ListItem> {
312 let mat = &self.matches[ix];
313 let name_label = mat.string.clone();
314
315 let scope_name = ScopeName(Cow::Owned(
316 LanguageName::new(&self.candidates[mat.candidate_id].string).lsp_id(),
317 ));
318 let file_label = if self.existing_scopes.contains(&scope_name) {
319 Some(ScopeFileName::from(scope_name).with_extension())
320 } else {
321 None
322 };
323
324 let language_icon = if FileFinderSettings::get_global(cx).file_icons {
325 let language_name = LanguageName::new(mat.string.as_str());
326 self.language_registry
327 .available_language_for_name(language_name.as_ref())
328 .and_then(|available_language| self.scope_icon(available_language.matcher(), cx))
329 .or_else(|| {
330 Some(
331 Icon::from_path(IconName::ToolWeb.path())
332 .map(|icon| icon.color(Color::Muted)),
333 )
334 })
335 } else {
336 None
337 };
338
339 Some(
340 ListItem::new(ix)
341 .inset(true)
342 .spacing(ListItemSpacing::Sparse)
343 .toggle_state(selected)
344 .start_slot::<Icon>(language_icon)
345 .child(
346 h_flex()
347 .gap_x_2()
348 .child(HighlightedLabel::new(name_label, mat.positions.clone()))
349 .when_some(file_label, |item, path_label| {
350 item.child(
351 Label::new(path_label)
352 .color(Color::Muted)
353 .size(LabelSize::Small),
354 )
355 }),
356 ),
357 )
358 }
359}