1use std::{any::Any, sync::Arc};
2
3use gpui::{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
131// todo!("here is where we need to use AnyWeakView");
132impl<T: SearchableItem> SearchableItemHandle for View<T> {
133 fn downgrade(&self) -> Box<dyn WeakSearchableItemHandle> {
134 // Box::new(self.downgrade())
135 todo!()
136 }
137
138 fn boxed_clone(&self) -> Box<dyn SearchableItemHandle> {
139 Box::new(self.clone())
140 }
141
142 fn supported_options(&self) -> SearchOptions {
143 T::supported_options()
144 }
145
146 fn subscribe_to_search_events(
147 &self,
148 cx: &mut WindowContext,
149 handler: Box<dyn Fn(SearchEvent, &mut WindowContext) + Send>,
150 ) -> Subscription {
151 cx.subscribe(self, move |handle, event, cx| {
152 let search_event = handle.update(cx, |handle, cx| handle.to_search_event(event, cx));
153 if let Some(search_event) = search_event {
154 handler(search_event, cx)
155 }
156 })
157 }
158
159 fn clear_matches(&self, cx: &mut WindowContext) {
160 self.update(cx, |this, cx| this.clear_matches(cx));
161 }
162 fn update_matches(&self, matches: &Vec<Box<dyn Any + Send>>, cx: &mut WindowContext) {
163 let matches = downcast_matches(matches);
164 self.update(cx, |this, cx| this.update_matches(matches, cx));
165 }
166 fn query_suggestion(&self, cx: &mut WindowContext) -> String {
167 self.update(cx, |this, cx| this.query_suggestion(cx))
168 }
169 fn activate_match(
170 &self,
171 index: usize,
172 matches: &Vec<Box<dyn Any + Send>>,
173 cx: &mut WindowContext,
174 ) {
175 let matches = downcast_matches(matches);
176 self.update(cx, |this, cx| this.activate_match(index, matches, cx));
177 }
178
179 fn select_matches(&self, matches: &Vec<Box<dyn Any + Send>>, cx: &mut WindowContext) {
180 let matches = downcast_matches(matches);
181 self.update(cx, |this, cx| this.select_matches(matches, cx));
182 }
183
184 fn match_index_for_direction(
185 &self,
186 matches: &Vec<Box<dyn Any + Send>>,
187 current_index: usize,
188 direction: Direction,
189 count: usize,
190 cx: &mut WindowContext,
191 ) -> usize {
192 let matches = downcast_matches(matches);
193 self.update(cx, |this, cx| {
194 this.match_index_for_direction(&matches, current_index, direction, count, cx)
195 })
196 }
197 fn find_matches(
198 &self,
199 query: Arc<SearchQuery>,
200 cx: &mut WindowContext,
201 ) -> Task<Vec<Box<dyn Any + Send>>> {
202 let matches = self.update(cx, |this, cx| this.find_matches(query, cx));
203 cx.spawn(|cx| async {
204 let matches = matches.await;
205 matches
206 .into_iter()
207 .map::<Box<dyn Any + Send>, _>(|range| Box::new(range))
208 .collect()
209 })
210 }
211 fn active_match_index(
212 &self,
213 matches: &Vec<Box<dyn Any + Send>>,
214 cx: &mut WindowContext,
215 ) -> Option<usize> {
216 let matches = downcast_matches(matches);
217 self.update(cx, |this, cx| this.active_match_index(matches, cx))
218 }
219
220 fn replace(&self, matches: &Box<dyn Any + Send>, query: &SearchQuery, cx: &mut WindowContext) {
221 let matches = matches.downcast_ref().unwrap();
222 self.update(cx, |this, cx| this.replace(matches, query, cx))
223 }
224}
225
226fn downcast_matches<T: Any + Clone>(matches: &Vec<Box<dyn Any + Send>>) -> Vec<T> {
227 matches
228 .iter()
229 .map(|range| range.downcast_ref::<T>().cloned())
230 .collect::<Option<Vec<_>>>()
231 .expect(
232 "SearchableItemHandle function called with vec of matches of a different type than expected",
233 )
234}
235
236impl From<Box<dyn SearchableItemHandle>> for AnyView {
237 fn from(this: Box<dyn SearchableItemHandle>) -> Self {
238 this.to_any().clone()
239 }
240}
241
242impl From<&Box<dyn SearchableItemHandle>> for AnyView {
243 fn from(this: &Box<dyn SearchableItemHandle>) -> Self {
244 this.to_any().clone()
245 }
246}
247
248impl PartialEq for Box<dyn SearchableItemHandle> {
249 fn eq(&self, other: &Self) -> bool {
250 self.id() == other.id()
251 }
252}
253
254impl Eq for Box<dyn SearchableItemHandle> {}
255
256pub trait WeakSearchableItemHandle: WeakItemHandle {
257 fn upgrade(&self, cx: &AppContext) -> Option<Box<dyn SearchableItemHandle>>;
258
259 // fn into_any(self) -> AnyWeakView;
260}
261
262// todo!()
263// impl<T: SearchableItem> WeakSearchableItemHandle for WeakView<T> {
264// fn upgrade(&self, cx: &AppContext) -> Option<Box<dyn SearchableItemHandle>> {
265// Some(Box::new(self.upgrade(cx)?))
266// }
267
268// // fn into_any(self) -> AnyView {
269// // self.into_any()
270// // }
271// }
272
273impl PartialEq for Box<dyn WeakSearchableItemHandle> {
274 fn eq(&self, other: &Self) -> bool {
275 self.id() == other.id()
276 }
277}
278
279impl Eq for Box<dyn WeakSearchableItemHandle> {}
280
281impl std::hash::Hash for Box<dyn WeakSearchableItemHandle> {
282 fn hash<H: std::hash::Hasher>(&self, state: &mut H) {
283 self.id().hash(state)
284 }
285}