1use std::{any::Any, sync::Arc};
2
3use gpui2::{AnyView, AppContext, Subscription, Task, View, ViewContext, WindowContext};
4use project2::search::SearchQuery;
5
6use crate::{
7 item::{Item, WeakItemHandle},
8 ItemHandle,
9};
10
11#[derive(Debug)]
12pub enum SearchEvent {
13 MatchesInvalidated,
14 ActiveMatchChanged,
15}
16
17#[derive(Clone, Copy, PartialEq, Eq, Debug)]
18pub enum Direction {
19 Prev,
20 Next,
21}
22
23#[derive(Clone, Copy, Debug, Default)]
24pub struct SearchOptions {
25 pub case: bool,
26 pub word: bool,
27 pub regex: bool,
28 /// Specifies whether the item supports search & replace.
29 pub replacement: bool,
30}
31
32pub trait SearchableItem: Item {
33 type Match: Any + Sync + Send + Clone;
34
35 fn supported_options() -> SearchOptions {
36 SearchOptions {
37 case: true,
38 word: true,
39 regex: true,
40 replacement: true,
41 }
42 }
43 fn to_search_event(
44 &mut self,
45 event: &Self::Event,
46 cx: &mut ViewContext<Self>,
47 ) -> Option<SearchEvent>;
48 fn clear_matches(&mut self, cx: &mut ViewContext<Self>);
49 fn update_matches(&mut self, matches: Vec<Self::Match>, cx: &mut ViewContext<Self>);
50 fn query_suggestion(&mut self, cx: &mut ViewContext<Self>) -> String;
51 fn activate_match(
52 &mut self,
53 index: usize,
54 matches: Vec<Self::Match>,
55 cx: &mut ViewContext<Self>,
56 );
57 fn select_matches(&mut self, matches: Vec<Self::Match>, cx: &mut ViewContext<Self>);
58 fn replace(&mut self, _: &Self::Match, _: &SearchQuery, _: &mut ViewContext<Self>);
59 fn match_index_for_direction(
60 &mut self,
61 matches: &Vec<Self::Match>,
62 current_index: usize,
63 direction: Direction,
64 count: usize,
65 _: &mut ViewContext<Self>,
66 ) -> usize {
67 match direction {
68 Direction::Prev => {
69 let count = count % matches.len();
70 if current_index >= count {
71 current_index - count
72 } else {
73 matches.len() - (count - current_index)
74 }
75 }
76 Direction::Next => (current_index + count) % matches.len(),
77 }
78 }
79 fn find_matches(
80 &mut self,
81 query: Arc<SearchQuery>,
82 cx: &mut ViewContext<Self>,
83 ) -> Task<Vec<Self::Match>>;
84 fn active_match_index(
85 &mut self,
86 matches: Vec<Self::Match>,
87 cx: &mut ViewContext<Self>,
88 ) -> Option<usize>;
89}
90
91pub trait SearchableItemHandle: ItemHandle {
92 fn downgrade(&self) -> Box<dyn WeakSearchableItemHandle>;
93 fn boxed_clone(&self) -> Box<dyn SearchableItemHandle>;
94 fn supported_options(&self) -> SearchOptions;
95 fn subscribe_to_search_events(
96 &self,
97 cx: &mut WindowContext,
98 handler: Box<dyn Fn(SearchEvent, &mut WindowContext) + Send>,
99 ) -> Subscription;
100 fn clear_matches(&self, cx: &mut WindowContext);
101 fn update_matches(&self, matches: &Vec<Box<dyn Any + Send>>, cx: &mut WindowContext);
102 fn query_suggestion(&self, cx: &mut WindowContext) -> String;
103 fn activate_match(
104 &self,
105 index: usize,
106 matches: &Vec<Box<dyn Any + Send>>,
107 cx: &mut WindowContext,
108 );
109 fn select_matches(&self, matches: &Vec<Box<dyn Any + Send>>, cx: &mut WindowContext);
110 fn replace(&self, _: &Box<dyn Any + Send>, _: &SearchQuery, _: &mut WindowContext);
111 fn match_index_for_direction(
112 &self,
113 matches: &Vec<Box<dyn Any + Send>>,
114 current_index: usize,
115 direction: Direction,
116 count: usize,
117 cx: &mut WindowContext,
118 ) -> usize;
119 fn find_matches(
120 &self,
121 query: Arc<SearchQuery>,
122 cx: &mut WindowContext,
123 ) -> Task<Vec<Box<dyn Any + Send>>>;
124 fn active_match_index(
125 &self,
126 matches: &Vec<Box<dyn Any + Send>>,
127 cx: &mut WindowContext,
128 ) -> Option<usize>;
129}
130
131impl<T: SearchableItem> SearchableItemHandle for View<T> {
132 fn downgrade(&self) -> Box<dyn WeakSearchableItemHandle> {
133 // Box::new(self.downgrade())
134 todo!()
135 }
136
137 fn boxed_clone(&self) -> Box<dyn SearchableItemHandle> {
138 Box::new(self.clone())
139 }
140
141 fn supported_options(&self) -> SearchOptions {
142 T::supported_options()
143 }
144
145 fn subscribe_to_search_events(
146 &self,
147 cx: &mut WindowContext,
148 handler: Box<dyn Fn(SearchEvent, &mut WindowContext) + Send>,
149 ) -> Subscription {
150 cx.subscribe(self, move |handle, event, cx| {
151 let search_event = handle.update(cx, |handle, cx| handle.to_search_event(event, cx));
152 if let Some(search_event) = search_event {
153 handler(search_event, cx)
154 }
155 })
156 }
157
158 fn clear_matches(&self, cx: &mut WindowContext) {
159 self.update(cx, |this, cx| this.clear_matches(cx));
160 }
161 fn update_matches(&self, matches: &Vec<Box<dyn Any + Send>>, cx: &mut WindowContext) {
162 let matches = downcast_matches(matches);
163 self.update(cx, |this, cx| this.update_matches(matches, cx));
164 }
165 fn query_suggestion(&self, cx: &mut WindowContext) -> String {
166 self.update(cx, |this, cx| this.query_suggestion(cx))
167 }
168 fn activate_match(
169 &self,
170 index: usize,
171 matches: &Vec<Box<dyn Any + Send>>,
172 cx: &mut WindowContext,
173 ) {
174 let matches = downcast_matches(matches);
175 self.update(cx, |this, cx| this.activate_match(index, matches, cx));
176 }
177
178 fn select_matches(&self, matches: &Vec<Box<dyn Any + Send>>, cx: &mut WindowContext) {
179 let matches = downcast_matches(matches);
180 self.update(cx, |this, cx| this.select_matches(matches, cx));
181 }
182
183 fn match_index_for_direction(
184 &self,
185 matches: &Vec<Box<dyn Any + Send>>,
186 current_index: usize,
187 direction: Direction,
188 count: usize,
189 cx: &mut WindowContext,
190 ) -> usize {
191 let matches = downcast_matches(matches);
192 self.update(cx, |this, cx| {
193 this.match_index_for_direction(&matches, current_index, direction, count, cx)
194 })
195 }
196 fn find_matches(
197 &self,
198 query: Arc<SearchQuery>,
199 cx: &mut WindowContext,
200 ) -> Task<Vec<Box<dyn Any + Send>>> {
201 let matches = self.update(cx, |this, cx| this.find_matches(query, cx));
202 cx.spawn_on_main(|cx| async {
203 let matches = matches.await;
204 matches
205 .into_iter()
206 .map::<Box<dyn Any + Send>, _>(|range| Box::new(range))
207 .collect()
208 })
209 }
210 fn active_match_index(
211 &self,
212 matches: &Vec<Box<dyn Any + Send>>,
213 cx: &mut WindowContext,
214 ) -> Option<usize> {
215 let matches = downcast_matches(matches);
216 self.update(cx, |this, cx| this.active_match_index(matches, cx))
217 }
218
219 fn replace(&self, matches: &Box<dyn Any + Send>, query: &SearchQuery, cx: &mut WindowContext) {
220 let matches = matches.downcast_ref().unwrap();
221 self.update(cx, |this, cx| this.replace(matches, query, cx))
222 }
223}
224
225fn downcast_matches<T: Any + Clone>(matches: &Vec<Box<dyn Any + Send>>) -> Vec<T> {
226 matches
227 .iter()
228 .map(|range| range.downcast_ref::<T>().cloned())
229 .collect::<Option<Vec<_>>>()
230 .expect(
231 "SearchableItemHandle function called with vec of matches of a different type than expected",
232 )
233}
234
235impl From<Box<dyn SearchableItemHandle>> for AnyView {
236 fn from(this: Box<dyn SearchableItemHandle>) -> Self {
237 this.to_any().clone()
238 }
239}
240
241impl From<&Box<dyn SearchableItemHandle>> for AnyView {
242 fn from(this: &Box<dyn SearchableItemHandle>) -> Self {
243 this.to_any().clone()
244 }
245}
246
247impl PartialEq for Box<dyn SearchableItemHandle> {
248 fn eq(&self, other: &Self) -> bool {
249 self.id() == other.id()
250 }
251}
252
253impl Eq for Box<dyn SearchableItemHandle> {}
254
255pub trait WeakSearchableItemHandle: WeakItemHandle {
256 fn upgrade(&self, cx: &AppContext) -> Option<Box<dyn SearchableItemHandle>>;
257
258 // fn into_any(self) -> AnyWeakView;
259}
260
261// todo!()
262// impl<T: SearchableItem> WeakSearchableItemHandle for WeakView<T> {
263// fn upgrade(&self, cx: &AppContext) -> Option<Box<dyn SearchableItemHandle>> {
264// Some(Box::new(self.upgrade(cx)?))
265// }
266
267// // fn into_any(self) -> AnyView {
268// // self.into_any()
269// // }
270// }
271
272impl PartialEq for Box<dyn WeakSearchableItemHandle> {
273 fn eq(&self, other: &Self) -> bool {
274 self.id() == other.id()
275 }
276}
277
278impl Eq for Box<dyn WeakSearchableItemHandle> {}
279
280impl std::hash::Hash for Box<dyn WeakSearchableItemHandle> {
281 fn hash<H: std::hash::Hasher>(&self, state: &mut H) {
282 self.id().hash(state)
283 }
284}