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, and then selecting the desired encoding from a list.
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 std::{path::PathBuf, sync::atomic::AtomicBool};
281
282 use fuzzy::{StringMatch, StringMatchCandidate};
283 use gpui::{AppContext, DismissEvent, Entity, EventEmitter, Focusable, WeakEntity};
284 use language::Buffer;
285 use picker::{Picker, PickerDelegate};
286 use ui::{
287 Context, HighlightedLabel, ListItem, ListItemSpacing, ParentElement, Render, Styled,
288 Window, rems, v_flex,
289 };
290 use util::{ResultExt, TryFutureExt};
291 use workspace::{ModalView, Workspace};
292
293 use crate::encoding_from_name;
294
295 /// A modal view that allows the user to select an encoding from a list of encodings.
296 pub struct EncodingSelector {
297 picker: Entity<Picker<EncodingSelectorDelegate>>,
298 workspace: WeakEntity<Workspace>,
299 path: Option<PathBuf>,
300 }
301
302 pub struct EncodingSelectorDelegate {
303 current_selection: usize,
304 encodings: Vec<StringMatchCandidate>,
305 matches: Vec<StringMatch>,
306 selector: WeakEntity<EncodingSelector>,
307 buffer: Option<WeakEntity<Buffer>>,
308 action: Action,
309 }
310
311 impl EncodingSelectorDelegate {
312 pub fn new(
313 selector: WeakEntity<EncodingSelector>,
314 buffer: Option<WeakEntity<Buffer>>,
315 action: Action,
316 ) -> EncodingSelectorDelegate {
317 EncodingSelectorDelegate {
318 current_selection: 0,
319 encodings: vec![
320 StringMatchCandidate::new(0, "UTF-8"),
321 StringMatchCandidate::new(1, "UTF-16 LE"),
322 StringMatchCandidate::new(2, "UTF-16 BE"),
323 StringMatchCandidate::new(3, "Windows-1252"),
324 StringMatchCandidate::new(4, "Windows-1251"),
325 StringMatchCandidate::new(5, "Windows-1250"),
326 StringMatchCandidate::new(6, "ISO 8859-2"),
327 StringMatchCandidate::new(7, "ISO 8859-3"),
328 StringMatchCandidate::new(8, "ISO 8859-4"),
329 StringMatchCandidate::new(9, "ISO 8859-5"),
330 StringMatchCandidate::new(10, "ISO 8859-6"),
331 StringMatchCandidate::new(11, "ISO 8859-7"),
332 StringMatchCandidate::new(12, "ISO 8859-8"),
333 StringMatchCandidate::new(13, "ISO 8859-13"),
334 StringMatchCandidate::new(14, "ISO 8859-15"),
335 StringMatchCandidate::new(15, "KOI8-R"),
336 StringMatchCandidate::new(16, "KOI8-U"),
337 StringMatchCandidate::new(17, "MacRoman"),
338 StringMatchCandidate::new(18, "Mac Cyrillic"),
339 StringMatchCandidate::new(19, "Windows-874"),
340 StringMatchCandidate::new(20, "Windows-1253"),
341 StringMatchCandidate::new(21, "Windows-1254"),
342 StringMatchCandidate::new(22, "Windows-1255"),
343 StringMatchCandidate::new(23, "Windows-1256"),
344 StringMatchCandidate::new(24, "Windows-1257"),
345 StringMatchCandidate::new(25, "Windows-1258"),
346 StringMatchCandidate::new(26, "Windows-949"),
347 StringMatchCandidate::new(27, "EUC-JP"),
348 StringMatchCandidate::new(28, "ISO 2022-JP"),
349 StringMatchCandidate::new(29, "GBK"),
350 StringMatchCandidate::new(30, "GB18030"),
351 StringMatchCandidate::new(31, "Big5"),
352 ],
353 matches: Vec::new(),
354 selector,
355 buffer: buffer,
356 action,
357 }
358 }
359 }
360
361 impl PickerDelegate for EncodingSelectorDelegate {
362 type ListItem = ListItem;
363
364 fn match_count(&self) -> usize {
365 self.matches.len()
366 }
367
368 fn selected_index(&self) -> usize {
369 self.current_selection
370 }
371
372 fn set_selected_index(&mut self, ix: usize, _: &mut Window, _: &mut Context<Picker<Self>>) {
373 self.current_selection = ix;
374 }
375
376 fn placeholder_text(&self, _window: &mut Window, _cx: &mut ui::App) -> std::sync::Arc<str> {
377 "Select an encoding...".into()
378 }
379
380 fn update_matches(
381 &mut self,
382 query: String,
383 window: &mut Window,
384 cx: &mut Context<Picker<Self>>,
385 ) -> gpui::Task<()> {
386 let executor = cx.background_executor().clone();
387 let encodings = self.encodings.clone();
388
389 cx.spawn_in(window, async move |picker, cx| {
390 let matches: Vec<StringMatch>;
391
392 if query.is_empty() {
393 matches = encodings
394 .into_iter()
395 .enumerate()
396 .map(|(index, value)| StringMatch {
397 candidate_id: index,
398 score: 0.0,
399 positions: Vec::new(),
400 string: value.string,
401 })
402 .collect();
403 } else {
404 matches = fuzzy::match_strings(
405 &encodings,
406 &query,
407 true,
408 false,
409 30,
410 &AtomicBool::new(false),
411 executor,
412 )
413 .await
414 }
415 picker
416 .update(cx, |picker, cx| {
417 let delegate = &mut picker.delegate;
418 delegate.matches = matches;
419 delegate.current_selection = delegate
420 .current_selection
421 .min(delegate.matches.len().saturating_sub(1));
422 cx.notify();
423 })
424 .log_err();
425 })
426 }
427
428 fn confirm(&mut self, _: bool, window: &mut Window, cx: &mut Context<Picker<Self>>) {
429 if let Some(buffer) = &self.buffer
430 && let Some(buffer) = buffer.upgrade()
431 {
432 buffer.update(cx, |buffer, cx| {
433 let buffer_encoding = buffer.encoding.clone();
434 let buffer_encoding = &mut *buffer_encoding.lock().unwrap();
435 *buffer_encoding =
436 encoding_from_name(self.matches[self.current_selection].string.as_str());
437 if self.action == Action::Reopen {
438 let executor = cx.background_executor().clone();
439 executor.spawn(buffer.reload(cx)).detach();
440 } else if self.action == Action::Save {
441 let executor = cx.background_executor().clone();
442
443 let workspace = self
444 .selector
445 .upgrade()
446 .unwrap()
447 .read(cx)
448 .workspace
449 .upgrade()
450 .unwrap();
451
452 executor
453 .spawn(workspace.update(cx, |workspace, cx| {
454 workspace
455 .save_active_item(workspace::SaveIntent::Save, window, cx)
456 .log_err()
457 }))
458 .detach();
459 }
460 });
461 }
462 self.dismissed(window, cx);
463 }
464
465 fn dismissed(&mut self, _: &mut Window, cx: &mut Context<Picker<Self>>) {
466 self.selector
467 .update(cx, |_, cx| cx.emit(DismissEvent))
468 .log_err();
469 }
470
471 fn render_match(
472 &self,
473 ix: usize,
474 _: bool,
475 _: &mut Window,
476 _: &mut Context<Picker<Self>>,
477 ) -> Option<Self::ListItem> {
478 Some(
479 ListItem::new(ix)
480 .child(HighlightedLabel::new(
481 &self.matches[ix].string,
482 self.matches[ix].positions.clone(),
483 ))
484 .spacing(ListItemSpacing::Sparse),
485 )
486 }
487 }
488
489 /// The action to perform after selecting an encoding.
490 #[derive(PartialEq, Clone)]
491 pub enum Action {
492 Save,
493 Reopen,
494 }
495
496 impl EncodingSelector {
497 pub fn new(
498 window: &mut Window,
499 cx: &mut Context<EncodingSelector>,
500 action: Action,
501 buffer: Option<WeakEntity<Buffer>>,
502 workspace: WeakEntity<Workspace>,
503 path: Option<PathBuf>,
504 ) -> EncodingSelector {
505 let delegate = EncodingSelectorDelegate::new(cx.entity().downgrade(), buffer, action);
506 let picker = cx.new(|cx| Picker::uniform_list(delegate, window, cx));
507
508 EncodingSelector {
509 picker,
510 workspace,
511 path,
512 }
513 }
514 }
515
516 impl EventEmitter<DismissEvent> for EncodingSelector {}
517
518 impl Focusable for EncodingSelector {
519 fn focus_handle(&self, cx: &ui::App) -> gpui::FocusHandle {
520 self.picker.focus_handle(cx)
521 }
522 }
523
524 impl ModalView for EncodingSelector {}
525
526 impl Render for EncodingSelector {
527 fn render(&mut self, _: &mut Window, _: &mut Context<Self>) -> impl ui::IntoElement {
528 v_flex().w(rems(34.0)).child(self.picker.clone())
529 }
530 }
531}