1/// This module contains the encoding selectors for saving or reopening files with a different encoding.
2/// It provides a modal view that allows the user to choose between saving with a different encoding
3/// or reopening with a different encoding.
4pub mod save_or_reopen {
5 use editor::Editor;
6 use gpui::Styled;
7 use gpui::{AppContext, ParentElement};
8 use picker::Picker;
9 use picker::PickerDelegate;
10 use std::sync::atomic::AtomicBool;
11 use util::ResultExt;
12
13 use fuzzy::{StringMatch, StringMatchCandidate};
14 use gpui::{DismissEvent, Entity, EventEmitter, Focusable, WeakEntity};
15
16 use ui::{Context, HighlightedLabel, ListItem, Render, Window, rems, v_flex};
17 use workspace::{ModalView, Workspace};
18
19 use crate::selectors::encoding::{Action, EncodingSelector};
20
21 /// A modal view that allows the user to select between saving with a different encoding or
22 /// reopening with a different encoding.
23 pub struct EncodingSaveOrReopenSelector {
24 picker: Entity<Picker<EncodingSaveOrReopenDelegate>>,
25 pub current_selection: usize,
26 }
27
28 impl EncodingSaveOrReopenSelector {
29 pub fn new(
30 window: &mut Window,
31 cx: &mut Context<EncodingSaveOrReopenSelector>,
32 workspace: WeakEntity<Workspace>,
33 ) -> Self {
34 let delegate = EncodingSaveOrReopenDelegate::new(cx.entity().downgrade(), workspace);
35
36 let picker = cx.new(|cx| Picker::uniform_list(delegate, window, cx));
37
38 Self {
39 picker,
40 current_selection: 0,
41 }
42 }
43
44 /// Toggle the modal view for selecting between saving with a different encoding or
45 /// reopening with a different encoding.
46 pub fn toggle(workspace: &mut Workspace, window: &mut Window, cx: &mut Context<Workspace>) {
47 let weak_workspace = workspace.weak_handle();
48 workspace.toggle_modal(window, cx, |window, cx| {
49 EncodingSaveOrReopenSelector::new(window, cx, weak_workspace)
50 });
51 }
52 }
53
54 impl Focusable for EncodingSaveOrReopenSelector {
55 fn focus_handle(&self, cx: &ui::App) -> gpui::FocusHandle {
56 self.picker.focus_handle(cx)
57 }
58 }
59
60 impl Render for EncodingSaveOrReopenSelector {
61 fn render(
62 &mut self,
63 _window: &mut Window,
64 _cx: &mut Context<Self>,
65 ) -> impl ui::IntoElement {
66 v_flex().w(rems(34.0)).child(self.picker.clone())
67 }
68 }
69
70 impl ModalView for EncodingSaveOrReopenSelector {}
71
72 impl EventEmitter<DismissEvent> for EncodingSaveOrReopenSelector {}
73
74 pub struct EncodingSaveOrReopenDelegate {
75 selector: WeakEntity<EncodingSaveOrReopenSelector>,
76 current_selection: usize,
77 matches: Vec<StringMatch>,
78 pub actions: Vec<StringMatchCandidate>,
79 workspace: WeakEntity<Workspace>,
80 }
81
82 impl EncodingSaveOrReopenDelegate {
83 pub fn new(
84 selector: WeakEntity<EncodingSaveOrReopenSelector>,
85 workspace: WeakEntity<Workspace>,
86 ) -> Self {
87 Self {
88 selector,
89 current_selection: 0,
90 matches: Vec::new(),
91 actions: vec![
92 StringMatchCandidate::new(0, "Save with encoding"),
93 StringMatchCandidate::new(1, "Reopen with encoding"),
94 ],
95 workspace,
96 }
97 }
98
99 pub fn get_actions(&self) -> (&str, &str) {
100 (&self.actions[0].string, &self.actions[1].string)
101 }
102
103 /// Handle the action selected by the user.
104 pub fn post_selection(
105 &self,
106 cx: &mut Context<Picker<EncodingSaveOrReopenDelegate>>,
107 window: &mut Window,
108 ) -> Option<()> {
109 if self.current_selection == 0 {
110 if let Some(workspace) = self.workspace.upgrade() {
111 let (_, buffer, _) = workspace
112 .read(cx)
113 .active_item(cx)?
114 .act_as::<Editor>(cx)?
115 .read(cx)
116 .active_excerpt(cx)?;
117
118 let weak_workspace = workspace.read(cx).weak_handle();
119
120 workspace.update(cx, |workspace, cx| {
121 workspace.toggle_modal(window, cx, |window, cx| {
122 let selector = EncodingSelector::new(
123 window,
124 cx,
125 Action::Save,
126 Some(buffer.downgrade()),
127 weak_workspace,
128 None,
129 );
130 selector
131 })
132 });
133 }
134 } else if self.current_selection == 1 {
135 if let Some(workspace) = self.workspace.upgrade() {
136 let (_, buffer, _) = workspace
137 .read(cx)
138 .active_item(cx)?
139 .act_as::<Editor>(cx)?
140 .read(cx)
141 .active_excerpt(cx)?;
142
143 let weak_workspace = workspace.read(cx).weak_handle();
144
145 workspace.update(cx, |workspace, cx| {
146 workspace.toggle_modal(window, cx, |window, cx| {
147 let selector = EncodingSelector::new(
148 window,
149 cx,
150 Action::Reopen,
151 Some(buffer.downgrade()),
152 weak_workspace,
153 None,
154 );
155 selector
156 });
157 });
158 }
159 }
160
161 Some(())
162 }
163 }
164
165 impl PickerDelegate for EncodingSaveOrReopenDelegate {
166 type ListItem = ListItem;
167
168 fn match_count(&self) -> usize {
169 self.matches.len()
170 }
171
172 fn selected_index(&self) -> usize {
173 self.current_selection
174 }
175
176 fn set_selected_index(
177 &mut self,
178 ix: usize,
179 _window: &mut Window,
180 cx: &mut Context<Picker<Self>>,
181 ) {
182 self.current_selection = ix;
183 self.selector
184 .update(cx, |selector, _cx| {
185 selector.current_selection = ix;
186 })
187 .log_err();
188 }
189
190 fn placeholder_text(&self, _window: &mut Window, _cx: &mut ui::App) -> std::sync::Arc<str> {
191 "Select an action...".into()
192 }
193
194 fn update_matches(
195 &mut self,
196 query: String,
197 window: &mut Window,
198 cx: &mut Context<Picker<Self>>,
199 ) -> gpui::Task<()> {
200 let executor = cx.background_executor().clone();
201 let actions = self.actions.clone();
202
203 cx.spawn_in(window, async move |this, cx| {
204 let matches = if query.is_empty() {
205 actions
206 .into_iter()
207 .enumerate()
208 .map(|(index, value)| StringMatch {
209 candidate_id: index,
210 score: 0.0,
211 positions: vec![],
212 string: value.string,
213 })
214 .collect::<Vec<StringMatch>>()
215 } else {
216 fuzzy::match_strings(
217 &actions,
218 &query,
219 false,
220 false,
221 2,
222 &AtomicBool::new(false),
223 executor,
224 )
225 .await
226 };
227
228 this.update(cx, |picker, cx| {
229 let delegate = &mut picker.delegate;
230 delegate.matches = matches;
231 delegate.current_selection = delegate
232 .current_selection
233 .min(delegate.matches.len().saturating_sub(1));
234 delegate
235 .selector
236 .update(cx, |selector, _cx| {
237 selector.current_selection = delegate.current_selection
238 })
239 .log_err();
240 cx.notify();
241 })
242 .log_err();
243 })
244 }
245
246 fn confirm(&mut self, _: bool, window: &mut Window, cx: &mut Context<Picker<Self>>) {
247 self.dismissed(window, cx);
248 if self.selector.is_upgradable() {
249 self.post_selection(cx, window);
250 }
251 }
252
253 fn dismissed(&mut self, _window: &mut Window, cx: &mut Context<Picker<Self>>) {
254 self.selector
255 .update(cx, |_, cx| cx.emit(DismissEvent))
256 .log_err();
257 }
258
259 fn render_match(
260 &self,
261 ix: usize,
262 _: bool,
263 _: &mut Window,
264 _: &mut Context<Picker<Self>>,
265 ) -> Option<Self::ListItem> {
266 Some(
267 ListItem::new(ix)
268 .child(HighlightedLabel::new(
269 &self.matches[ix].string,
270 self.matches[ix].positions.clone(),
271 ))
272 .spacing(ui::ListItemSpacing::Sparse),
273 )
274 }
275 }
276}
277
278/// This module contains the encoding selector for choosing an encoding to save or reopen a file with.
279pub mod encoding {
280 use editor::Editor;
281 use std::{path::PathBuf, sync::atomic::AtomicBool};
282
283 use fuzzy::{StringMatch, StringMatchCandidate};
284 use gpui::{
285 AppContext, DismissEvent, Entity, EventEmitter, Focusable, WeakEntity, http_client::anyhow,
286 };
287 use language::Buffer;
288 use picker::{Picker, PickerDelegate};
289 use ui::{
290 Context, HighlightedLabel, ListItem, ListItemSpacing, ParentElement, Render, Styled,
291 Window, rems, v_flex,
292 };
293 use util::{ResultExt, TryFutureExt};
294 use workspace::{CloseActiveItem, ModalView, OpenOptions, Workspace};
295
296 use crate::encoding_from_name;
297
298 /// A modal view that allows the user to select an encoding from a list of encodings.
299 pub struct EncodingSelector {
300 picker: Entity<Picker<EncodingSelectorDelegate>>,
301 workspace: WeakEntity<Workspace>,
302 path: Option<PathBuf>,
303 }
304
305 pub struct EncodingSelectorDelegate {
306 current_selection: usize,
307 encodings: Vec<StringMatchCandidate>,
308 matches: Vec<StringMatch>,
309 selector: WeakEntity<EncodingSelector>,
310 buffer: Option<WeakEntity<Buffer>>,
311 action: Action,
312 }
313
314 impl EncodingSelectorDelegate {
315 pub fn new(
316 selector: WeakEntity<EncodingSelector>,
317 buffer: Option<WeakEntity<Buffer>>,
318 action: Action,
319 ) -> EncodingSelectorDelegate {
320 EncodingSelectorDelegate {
321 current_selection: 0,
322 encodings: vec![
323 StringMatchCandidate::new(0, "UTF-8"),
324 StringMatchCandidate::new(1, "UTF-16 LE"),
325 StringMatchCandidate::new(2, "UTF-16 BE"),
326 StringMatchCandidate::new(3, "Windows-1252"),
327 StringMatchCandidate::new(4, "Windows-1251"),
328 StringMatchCandidate::new(5, "Windows-1250"),
329 StringMatchCandidate::new(6, "ISO 8859-2"),
330 StringMatchCandidate::new(7, "ISO 8859-3"),
331 StringMatchCandidate::new(8, "ISO 8859-4"),
332 StringMatchCandidate::new(9, "ISO 8859-5"),
333 StringMatchCandidate::new(10, "ISO 8859-6"),
334 StringMatchCandidate::new(11, "ISO 8859-7"),
335 StringMatchCandidate::new(12, "ISO 8859-8"),
336 StringMatchCandidate::new(13, "ISO 8859-13"),
337 StringMatchCandidate::new(14, "ISO 8859-15"),
338 StringMatchCandidate::new(15, "KOI8-R"),
339 StringMatchCandidate::new(16, "KOI8-U"),
340 StringMatchCandidate::new(17, "MacRoman"),
341 StringMatchCandidate::new(18, "Mac Cyrillic"),
342 StringMatchCandidate::new(19, "Windows-874"),
343 StringMatchCandidate::new(20, "Windows-1253"),
344 StringMatchCandidate::new(21, "Windows-1254"),
345 StringMatchCandidate::new(22, "Windows-1255"),
346 StringMatchCandidate::new(23, "Windows-1256"),
347 StringMatchCandidate::new(24, "Windows-1257"),
348 StringMatchCandidate::new(25, "Windows-1258"),
349 StringMatchCandidate::new(26, "Windows-949"),
350 StringMatchCandidate::new(27, "EUC-JP"),
351 StringMatchCandidate::new(28, "ISO 2022-JP"),
352 StringMatchCandidate::new(29, "GBK"),
353 StringMatchCandidate::new(30, "GB18030"),
354 StringMatchCandidate::new(31, "Big5"),
355 ],
356 matches: Vec::new(),
357 selector,
358 buffer: buffer,
359 action,
360 }
361 }
362 }
363
364 impl PickerDelegate for EncodingSelectorDelegate {
365 type ListItem = ListItem;
366
367 fn match_count(&self) -> usize {
368 self.matches.len()
369 }
370
371 fn selected_index(&self) -> usize {
372 self.current_selection
373 }
374
375 fn set_selected_index(&mut self, ix: usize, _: &mut Window, _: &mut Context<Picker<Self>>) {
376 self.current_selection = ix;
377 }
378
379 fn placeholder_text(&self, _window: &mut Window, _cx: &mut ui::App) -> std::sync::Arc<str> {
380 "Select an encoding...".into()
381 }
382
383 fn update_matches(
384 &mut self,
385 query: String,
386 window: &mut Window,
387 cx: &mut Context<Picker<Self>>,
388 ) -> gpui::Task<()> {
389 let executor = cx.background_executor().clone();
390 let encodings = self.encodings.clone();
391
392 cx.spawn_in(window, async move |picker, cx| {
393 let matches: Vec<StringMatch>;
394
395 if query.is_empty() {
396 matches = encodings
397 .into_iter()
398 .enumerate()
399 .map(|(index, value)| StringMatch {
400 candidate_id: index,
401 score: 0.0,
402 positions: Vec::new(),
403 string: value.string,
404 })
405 .collect();
406 } else {
407 matches = fuzzy::match_strings(
408 &encodings,
409 &query,
410 true,
411 false,
412 30,
413 &AtomicBool::new(false),
414 executor,
415 )
416 .await
417 }
418 picker
419 .update(cx, |picker, cx| {
420 let delegate = &mut picker.delegate;
421 delegate.matches = matches;
422 delegate.current_selection = delegate
423 .current_selection
424 .min(delegate.matches.len().saturating_sub(1));
425 cx.notify();
426 })
427 .log_err();
428 })
429 }
430
431 fn confirm(&mut self, _: bool, window: &mut Window, cx: &mut Context<Picker<Self>>) {
432 let workspace = self
433 .selector
434 .upgrade()
435 .unwrap()
436 .read(cx)
437 .workspace
438 .upgrade()
439 .unwrap();
440
441 if let Some(buffer) = &self.buffer
442 && let Some(buffer_entity) = buffer.upgrade()
443 {
444 let buffer = buffer_entity.read(cx);
445
446 // Since the encoding will be accessed in `reload`,
447 // the lock must be released before calling `reload`.
448 // By limiting the scope, we ensure that it is released
449 {
450 let buffer_encoding = buffer.encoding.clone();
451 buffer_encoding.set(encoding_from_name(
452 self.matches[self.current_selection].string.as_str(),
453 ));
454 }
455
456 self.dismissed(window, cx);
457
458 if self.action == Action::Reopen {
459 buffer_entity.update(cx, |buffer, cx| {
460 let rec = buffer.reload(cx);
461 cx.spawn(async move |_, _| rec.await).detach()
462 });
463 } else if self.action == Action::Save {
464 let task = workspace.update(cx, |workspace, cx| {
465 workspace
466 .save_active_item(workspace::SaveIntent::Save, window, cx)
467 .log_err()
468 });
469 cx.spawn(async |_, _| task).detach();
470 }
471 } else {
472 if let Some(path) = self.selector.upgrade().unwrap().read(cx).path.clone() {
473 workspace.update(cx, |workspace, cx| {
474 workspace.active_pane().update(cx, |pane, cx| {
475 pane.close_active_item(&CloseActiveItem::default(), window, cx)
476 .detach();
477 });
478 });
479
480 let encoding =
481 encoding_from_name(self.matches[self.current_selection].string.as_str());
482
483 let open_task = workspace.update(cx, |workspace, cx| {
484 workspace
485 .encoding_options
486 .encoding
487 .lock()
488 .unwrap()
489 .set(encoding);
490
491 workspace.open_abs_path(path, OpenOptions::default(), window, cx)
492 });
493
494 cx.spawn(async move |_, cx| {
495 if let Ok(_) = {
496 let result = open_task.await;
497 workspace
498 .update(cx, |workspace, _| {
499 *workspace.encoding_options.force.get_mut() = false;
500 })
501 .unwrap();
502
503 result
504 } && let Ok(Ok((_, buffer, _))) =
505 workspace.read_with(cx, |workspace, cx| {
506 if let Some(active_item) = workspace.active_item(cx)
507 && let Some(editor) = active_item.act_as::<Editor>(cx)
508 {
509 Ok(editor.read(cx).active_excerpt(cx).unwrap())
510 } else {
511 Err(anyhow!("error"))
512 }
513 })
514 {
515 buffer
516 .read_with(cx, |buffer, _| {
517 buffer.encoding.set(encoding);
518 })
519 .log_err();
520 }
521 })
522 .detach();
523 }
524 }
525 }
526
527 fn dismissed(&mut self, _: &mut Window, cx: &mut Context<Picker<Self>>) {
528 self.selector
529 .update(cx, |_, cx| cx.emit(DismissEvent))
530 .log_err();
531 }
532
533 fn render_match(
534 &self,
535 ix: usize,
536 _: bool,
537 _: &mut Window,
538 _: &mut Context<Picker<Self>>,
539 ) -> Option<Self::ListItem> {
540 Some(
541 ListItem::new(ix)
542 .child(HighlightedLabel::new(
543 &self.matches[ix].string,
544 self.matches[ix].positions.clone(),
545 ))
546 .spacing(ListItemSpacing::Sparse),
547 )
548 }
549 }
550
551 /// The action to perform after selecting an encoding.
552 #[derive(PartialEq, Clone)]
553 pub enum Action {
554 Save,
555 Reopen,
556 }
557
558 impl EncodingSelector {
559 pub fn new(
560 window: &mut Window,
561 cx: &mut Context<EncodingSelector>,
562 action: Action,
563 buffer: Option<WeakEntity<Buffer>>,
564 workspace: WeakEntity<Workspace>,
565 path: Option<PathBuf>,
566 ) -> EncodingSelector {
567 let delegate = EncodingSelectorDelegate::new(cx.entity().downgrade(), buffer, action);
568 let picker = cx.new(|cx| Picker::uniform_list(delegate, window, cx));
569
570 EncodingSelector {
571 picker,
572 workspace,
573 path,
574 }
575 }
576 }
577
578 impl EventEmitter<DismissEvent> for EncodingSelector {}
579
580 impl Focusable for EncodingSelector {
581 fn focus_handle(&self, cx: &ui::App) -> gpui::FocusHandle {
582 self.picker.focus_handle(cx)
583 }
584 }
585
586 impl ModalView for EncodingSelector {}
587
588 impl Render for EncodingSelector {
589 fn render(&mut self, _: &mut Window, _: &mut Context<Self>) -> impl ui::IntoElement {
590 v_flex().w(rems(34.0)).child(self.picker.clone())
591 }
592 }
593}