1pub mod display_map;
2mod element;
3pub mod movement;
4
5#[cfg(test)]
6mod test;
7
8use clock::ReplicaId;
9pub use display_map::DisplayPoint;
10use display_map::*;
11pub use element::*;
12use gpui::{
13 action, color::Color, fonts::TextStyle, geometry::vector::Vector2F, keymap::Binding,
14 text_layout, AppContext, ClipboardItem, Element, ElementBox, Entity, ModelHandle,
15 MutableAppContext, RenderContext, View, ViewContext, WeakViewHandle,
16};
17use language::*;
18use serde::{Deserialize, Serialize};
19use smallvec::SmallVec;
20use smol::Timer;
21use std::{
22 cell::RefCell,
23 cmp::{self, Ordering},
24 iter, mem,
25 ops::{Range, RangeInclusive},
26 rc::Rc,
27 sync::Arc,
28 time::Duration,
29};
30use sum_tree::Bias;
31use theme::EditorStyle;
32use util::post_inc;
33
34const CURSOR_BLINK_INTERVAL: Duration = Duration::from_millis(500);
35const MAX_LINE_LEN: usize = 1024;
36
37action!(Cancel);
38action!(Backspace);
39action!(Delete);
40action!(Input, String);
41action!(Newline);
42action!(Tab);
43action!(DeleteLine);
44action!(DeleteToPreviousWordBoundary);
45action!(DeleteToNextWordBoundary);
46action!(DeleteToBeginningOfLine);
47action!(DeleteToEndOfLine);
48action!(CutToEndOfLine);
49action!(DuplicateLine);
50action!(MoveLineUp);
51action!(MoveLineDown);
52action!(Cut);
53action!(Copy);
54action!(Paste);
55action!(Undo);
56action!(Redo);
57action!(MoveUp);
58action!(MoveDown);
59action!(MoveLeft);
60action!(MoveRight);
61action!(MoveToPreviousWordBoundary);
62action!(MoveToNextWordBoundary);
63action!(MoveToBeginningOfLine);
64action!(MoveToEndOfLine);
65action!(MoveToBeginning);
66action!(MoveToEnd);
67action!(SelectUp);
68action!(SelectDown);
69action!(SelectLeft);
70action!(SelectRight);
71action!(SelectToPreviousWordBoundary);
72action!(SelectToNextWordBoundary);
73action!(SelectToBeginningOfLine, bool);
74action!(SelectToEndOfLine);
75action!(SelectToBeginning);
76action!(SelectToEnd);
77action!(SelectAll);
78action!(SelectLine);
79action!(SplitSelectionIntoLines);
80action!(AddSelectionAbove);
81action!(AddSelectionBelow);
82action!(SelectLargerSyntaxNode);
83action!(SelectSmallerSyntaxNode);
84action!(MoveToEnclosingBracket);
85action!(PageUp);
86action!(PageDown);
87action!(Fold);
88action!(Unfold);
89action!(FoldSelectedRanges);
90action!(Scroll, Vector2F);
91action!(Select, SelectPhase);
92
93pub fn init(cx: &mut MutableAppContext) {
94 cx.add_bindings(vec![
95 Binding::new("escape", Cancel, Some("Editor")),
96 Binding::new("backspace", Backspace, Some("Editor")),
97 Binding::new("ctrl-h", Backspace, Some("Editor")),
98 Binding::new("delete", Delete, Some("Editor")),
99 Binding::new("ctrl-d", Delete, Some("Editor")),
100 Binding::new("enter", Newline, Some("Editor && mode == full")),
101 Binding::new(
102 "alt-enter",
103 Input("\n".into()),
104 Some("Editor && mode == auto_height"),
105 ),
106 Binding::new("tab", Tab, Some("Editor")),
107 Binding::new("ctrl-shift-K", DeleteLine, Some("Editor")),
108 Binding::new(
109 "alt-backspace",
110 DeleteToPreviousWordBoundary,
111 Some("Editor"),
112 ),
113 Binding::new("alt-h", DeleteToPreviousWordBoundary, Some("Editor")),
114 Binding::new("alt-delete", DeleteToNextWordBoundary, Some("Editor")),
115 Binding::new("alt-d", DeleteToNextWordBoundary, Some("Editor")),
116 Binding::new("cmd-backspace", DeleteToBeginningOfLine, Some("Editor")),
117 Binding::new("cmd-delete", DeleteToEndOfLine, Some("Editor")),
118 Binding::new("ctrl-k", CutToEndOfLine, Some("Editor")),
119 Binding::new("cmd-shift-D", DuplicateLine, Some("Editor")),
120 Binding::new("ctrl-cmd-up", MoveLineUp, Some("Editor")),
121 Binding::new("ctrl-cmd-down", MoveLineDown, Some("Editor")),
122 Binding::new("cmd-x", Cut, Some("Editor")),
123 Binding::new("cmd-c", Copy, Some("Editor")),
124 Binding::new("cmd-v", Paste, Some("Editor")),
125 Binding::new("cmd-z", Undo, Some("Editor")),
126 Binding::new("cmd-shift-Z", Redo, Some("Editor")),
127 Binding::new("up", MoveUp, Some("Editor")),
128 Binding::new("down", MoveDown, Some("Editor")),
129 Binding::new("left", MoveLeft, Some("Editor")),
130 Binding::new("right", MoveRight, Some("Editor")),
131 Binding::new("ctrl-p", MoveUp, Some("Editor")),
132 Binding::new("ctrl-n", MoveDown, Some("Editor")),
133 Binding::new("ctrl-b", MoveLeft, Some("Editor")),
134 Binding::new("ctrl-f", MoveRight, Some("Editor")),
135 Binding::new("alt-left", MoveToPreviousWordBoundary, Some("Editor")),
136 Binding::new("alt-b", MoveToPreviousWordBoundary, Some("Editor")),
137 Binding::new("alt-right", MoveToNextWordBoundary, Some("Editor")),
138 Binding::new("alt-f", MoveToNextWordBoundary, Some("Editor")),
139 Binding::new("cmd-left", MoveToBeginningOfLine, Some("Editor")),
140 Binding::new("ctrl-a", MoveToBeginningOfLine, Some("Editor")),
141 Binding::new("cmd-right", MoveToEndOfLine, Some("Editor")),
142 Binding::new("ctrl-e", MoveToEndOfLine, Some("Editor")),
143 Binding::new("cmd-up", MoveToBeginning, Some("Editor")),
144 Binding::new("cmd-down", MoveToEnd, Some("Editor")),
145 Binding::new("shift-up", SelectUp, Some("Editor")),
146 Binding::new("ctrl-shift-P", SelectUp, Some("Editor")),
147 Binding::new("shift-down", SelectDown, Some("Editor")),
148 Binding::new("ctrl-shift-N", SelectDown, Some("Editor")),
149 Binding::new("shift-left", SelectLeft, Some("Editor")),
150 Binding::new("ctrl-shift-B", SelectLeft, Some("Editor")),
151 Binding::new("shift-right", SelectRight, Some("Editor")),
152 Binding::new("ctrl-shift-F", SelectRight, Some("Editor")),
153 Binding::new(
154 "alt-shift-left",
155 SelectToPreviousWordBoundary,
156 Some("Editor"),
157 ),
158 Binding::new("alt-shift-B", SelectToPreviousWordBoundary, Some("Editor")),
159 Binding::new("alt-shift-right", SelectToNextWordBoundary, Some("Editor")),
160 Binding::new("alt-shift-F", SelectToNextWordBoundary, Some("Editor")),
161 Binding::new(
162 "cmd-shift-left",
163 SelectToBeginningOfLine(true),
164 Some("Editor"),
165 ),
166 Binding::new(
167 "ctrl-shift-A",
168 SelectToBeginningOfLine(true),
169 Some("Editor"),
170 ),
171 Binding::new("cmd-shift-right", SelectToEndOfLine, Some("Editor")),
172 Binding::new("ctrl-shift-E", SelectToEndOfLine, Some("Editor")),
173 Binding::new("cmd-shift-up", SelectToBeginning, Some("Editor")),
174 Binding::new("cmd-shift-down", SelectToEnd, Some("Editor")),
175 Binding::new("cmd-a", SelectAll, Some("Editor")),
176 Binding::new("cmd-l", SelectLine, Some("Editor")),
177 Binding::new("cmd-shift-L", SplitSelectionIntoLines, Some("Editor")),
178 Binding::new("cmd-alt-up", AddSelectionAbove, Some("Editor")),
179 Binding::new("cmd-ctrl-p", AddSelectionAbove, Some("Editor")),
180 Binding::new("cmd-alt-down", AddSelectionBelow, Some("Editor")),
181 Binding::new("cmd-ctrl-n", AddSelectionBelow, Some("Editor")),
182 Binding::new("alt-up", SelectLargerSyntaxNode, Some("Editor")),
183 Binding::new("ctrl-w", SelectLargerSyntaxNode, Some("Editor")),
184 Binding::new("alt-down", SelectSmallerSyntaxNode, Some("Editor")),
185 Binding::new("ctrl-shift-W", SelectSmallerSyntaxNode, Some("Editor")),
186 Binding::new("ctrl-m", MoveToEnclosingBracket, Some("Editor")),
187 Binding::new("pageup", PageUp, Some("Editor")),
188 Binding::new("pagedown", PageDown, Some("Editor")),
189 Binding::new("alt-cmd-[", Fold, Some("Editor")),
190 Binding::new("alt-cmd-]", Unfold, Some("Editor")),
191 Binding::new("alt-cmd-f", FoldSelectedRanges, Some("Editor")),
192 ]);
193
194 cx.add_action(|this: &mut Editor, action: &Scroll, cx| this.set_scroll_position(action.0, cx));
195 cx.add_action(Editor::select);
196 cx.add_action(Editor::cancel);
197 cx.add_action(Editor::handle_input);
198 cx.add_action(Editor::newline);
199 cx.add_action(Editor::backspace);
200 cx.add_action(Editor::delete);
201 cx.add_action(Editor::tab);
202 cx.add_action(Editor::delete_line);
203 cx.add_action(Editor::delete_to_previous_word_boundary);
204 cx.add_action(Editor::delete_to_next_word_boundary);
205 cx.add_action(Editor::delete_to_beginning_of_line);
206 cx.add_action(Editor::delete_to_end_of_line);
207 cx.add_action(Editor::cut_to_end_of_line);
208 cx.add_action(Editor::duplicate_line);
209 cx.add_action(Editor::move_line_up);
210 cx.add_action(Editor::move_line_down);
211 cx.add_action(Editor::cut);
212 cx.add_action(Editor::copy);
213 cx.add_action(Editor::paste);
214 cx.add_action(Editor::undo);
215 cx.add_action(Editor::redo);
216 cx.add_action(Editor::move_up);
217 cx.add_action(Editor::move_down);
218 cx.add_action(Editor::move_left);
219 cx.add_action(Editor::move_right);
220 cx.add_action(Editor::move_to_previous_word_boundary);
221 cx.add_action(Editor::move_to_next_word_boundary);
222 cx.add_action(Editor::move_to_beginning_of_line);
223 cx.add_action(Editor::move_to_end_of_line);
224 cx.add_action(Editor::move_to_beginning);
225 cx.add_action(Editor::move_to_end);
226 cx.add_action(Editor::select_up);
227 cx.add_action(Editor::select_down);
228 cx.add_action(Editor::select_left);
229 cx.add_action(Editor::select_right);
230 cx.add_action(Editor::select_to_previous_word_boundary);
231 cx.add_action(Editor::select_to_next_word_boundary);
232 cx.add_action(Editor::select_to_beginning_of_line);
233 cx.add_action(Editor::select_to_end_of_line);
234 cx.add_action(Editor::select_to_beginning);
235 cx.add_action(Editor::select_to_end);
236 cx.add_action(Editor::select_all);
237 cx.add_action(Editor::select_line);
238 cx.add_action(Editor::split_selection_into_lines);
239 cx.add_action(Editor::add_selection_above);
240 cx.add_action(Editor::add_selection_below);
241 cx.add_action(Editor::select_larger_syntax_node);
242 cx.add_action(Editor::select_smaller_syntax_node);
243 cx.add_action(Editor::move_to_enclosing_bracket);
244 cx.add_action(Editor::page_up);
245 cx.add_action(Editor::page_down);
246 cx.add_action(Editor::fold);
247 cx.add_action(Editor::unfold);
248 cx.add_action(Editor::fold_selected_ranges);
249}
250
251trait SelectionExt {
252 fn display_range(&self, map: &DisplayMapSnapshot) -> Range<DisplayPoint>;
253 fn spanned_rows(
254 &self,
255 include_end_if_at_line_start: bool,
256 map: &DisplayMapSnapshot,
257 ) -> SpannedRows;
258}
259
260struct SpannedRows {
261 buffer_rows: Range<u32>,
262 display_rows: Range<u32>,
263}
264
265#[derive(Clone, Debug)]
266pub enum SelectPhase {
267 Begin {
268 position: DisplayPoint,
269 add: bool,
270 },
271 Update {
272 position: DisplayPoint,
273 scroll_position: Vector2F,
274 },
275 End,
276}
277
278#[derive(Copy, Clone, PartialEq, Eq)]
279pub enum EditorMode {
280 SingleLine,
281 AutoHeight { max_lines: usize },
282 Full,
283}
284
285#[derive(Clone)]
286pub struct EditorSettings {
287 pub tab_size: usize,
288 pub style: EditorStyle,
289}
290
291pub struct Editor {
292 handle: WeakViewHandle<Self>,
293 buffer: ModelHandle<Buffer>,
294 display_map: ModelHandle<DisplayMap>,
295 selection_set_id: SelectionSetId,
296 pending_selection: Option<Selection>,
297 next_selection_id: usize,
298 add_selections_state: Option<AddSelectionsState>,
299 autoclose_stack: Vec<BracketPairState>,
300 select_larger_syntax_node_stack: Vec<Arc<[Selection]>>,
301 scroll_position: Vector2F,
302 scroll_top_anchor: Anchor,
303 autoscroll_requested: bool,
304 build_settings: Rc<RefCell<dyn Fn(&AppContext) -> EditorSettings>>,
305 focused: bool,
306 show_local_cursors: bool,
307 blink_epoch: usize,
308 blinking_paused: bool,
309 mode: EditorMode,
310 placeholder_text: Option<Arc<str>>,
311}
312
313pub struct Snapshot {
314 pub mode: EditorMode,
315 pub display_snapshot: DisplayMapSnapshot,
316 pub placeholder_text: Option<Arc<str>>,
317 is_focused: bool,
318 scroll_position: Vector2F,
319 scroll_top_anchor: Anchor,
320}
321
322struct AddSelectionsState {
323 above: bool,
324 stack: Vec<usize>,
325}
326
327struct BracketPairState {
328 ranges: SmallVec<[Range<Anchor>; 32]>,
329 pair: BracketPair,
330}
331
332#[derive(Serialize, Deserialize)]
333struct ClipboardSelection {
334 len: usize,
335 is_entire_line: bool,
336}
337
338impl Editor {
339 pub fn single_line(
340 build_settings: impl 'static + Fn(&AppContext) -> EditorSettings,
341 cx: &mut ViewContext<Self>,
342 ) -> Self {
343 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
344 let mut view = Self::for_buffer(buffer, build_settings, cx);
345 view.mode = EditorMode::SingleLine;
346 view
347 }
348
349 pub fn auto_height(
350 max_lines: usize,
351 build_settings: impl 'static + Fn(&AppContext) -> EditorSettings,
352 cx: &mut ViewContext<Self>,
353 ) -> Self {
354 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
355 let mut view = Self::for_buffer(buffer, build_settings, cx);
356 view.mode = EditorMode::AutoHeight { max_lines };
357 view
358 }
359
360 pub fn for_buffer(
361 buffer: ModelHandle<Buffer>,
362 build_settings: impl 'static + Fn(&AppContext) -> EditorSettings,
363 cx: &mut ViewContext<Self>,
364 ) -> Self {
365 Self::new(buffer, Rc::new(RefCell::new(build_settings)), cx)
366 }
367
368 pub fn clone(&self, cx: &mut ViewContext<Self>) -> Self {
369 let mut clone = Self::new(self.buffer.clone(), self.build_settings.clone(), cx);
370 clone.scroll_position = self.scroll_position;
371 clone.scroll_top_anchor = self.scroll_top_anchor.clone();
372 clone
373 }
374
375 pub fn new(
376 buffer: ModelHandle<Buffer>,
377 build_settings: Rc<RefCell<dyn Fn(&AppContext) -> EditorSettings>>,
378 cx: &mut ViewContext<Self>,
379 ) -> Self {
380 let settings = build_settings.borrow_mut()(cx);
381 let display_map = cx.add_model(|cx| {
382 DisplayMap::new(
383 buffer.clone(),
384 settings.tab_size,
385 settings.style.text.font_id,
386 settings.style.text.font_size,
387 None,
388 cx,
389 )
390 });
391 cx.observe(&buffer, Self::on_buffer_changed).detach();
392 cx.subscribe(&buffer, Self::on_buffer_event).detach();
393 cx.observe(&display_map, Self::on_display_map_changed)
394 .detach();
395
396 let mut next_selection_id = 0;
397 let selection_set_id = buffer.update(cx, |buffer, cx| {
398 buffer.add_selection_set(
399 vec![Selection {
400 id: post_inc(&mut next_selection_id),
401 start: buffer.anchor_before(0),
402 end: buffer.anchor_before(0),
403 reversed: false,
404 goal: SelectionGoal::None,
405 }],
406 cx,
407 )
408 });
409 Self {
410 handle: cx.handle().downgrade(),
411 buffer,
412 display_map,
413 selection_set_id,
414 pending_selection: None,
415 next_selection_id,
416 add_selections_state: None,
417 autoclose_stack: Default::default(),
418 select_larger_syntax_node_stack: Vec::new(),
419 build_settings,
420 scroll_position: Vector2F::zero(),
421 scroll_top_anchor: Anchor::min(),
422 autoscroll_requested: false,
423 focused: false,
424 show_local_cursors: false,
425 blink_epoch: 0,
426 blinking_paused: false,
427 mode: EditorMode::Full,
428 placeholder_text: None,
429 }
430 }
431
432 pub fn replica_id(&self, cx: &AppContext) -> ReplicaId {
433 self.buffer.read(cx).replica_id()
434 }
435
436 pub fn buffer(&self) -> &ModelHandle<Buffer> {
437 &self.buffer
438 }
439
440 pub fn snapshot(&mut self, cx: &mut MutableAppContext) -> Snapshot {
441 Snapshot {
442 mode: self.mode,
443 display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
444 scroll_position: self.scroll_position,
445 scroll_top_anchor: self.scroll_top_anchor.clone(),
446 placeholder_text: self.placeholder_text.clone(),
447 is_focused: self
448 .handle
449 .upgrade(cx)
450 .map_or(false, |handle| handle.is_focused(cx)),
451 }
452 }
453
454 pub fn language<'a>(&self, cx: &'a AppContext) -> Option<&'a Arc<Language>> {
455 self.buffer.read(cx).language()
456 }
457
458 pub fn set_placeholder_text(
459 &mut self,
460 placeholder_text: impl Into<Arc<str>>,
461 cx: &mut ViewContext<Self>,
462 ) {
463 self.placeholder_text = Some(placeholder_text.into());
464 cx.notify();
465 }
466
467 fn set_scroll_position(&mut self, mut scroll_position: Vector2F, cx: &mut ViewContext<Self>) {
468 let map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
469 let scroll_top_buffer_offset =
470 DisplayPoint::new(scroll_position.y() as u32, 0).to_buffer_offset(&map, Bias::Right);
471 self.scroll_top_anchor = self
472 .buffer
473 .read(cx)
474 .anchor_at(scroll_top_buffer_offset, Bias::Right);
475 scroll_position.set_y(scroll_position.y().fract());
476 self.scroll_position = scroll_position;
477 cx.notify();
478 }
479
480 pub fn clamp_scroll_left(&mut self, max: f32) -> bool {
481 if max < self.scroll_position.x() {
482 self.scroll_position.set_x(max);
483 true
484 } else {
485 false
486 }
487 }
488
489 pub fn autoscroll_vertically(
490 &mut self,
491 viewport_height: f32,
492 line_height: f32,
493 cx: &mut ViewContext<Self>,
494 ) -> bool {
495 let visible_lines = viewport_height / line_height;
496 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
497 let mut scroll_position =
498 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor);
499 let max_scroll_top = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
500 (display_map.max_point().row() as f32 - visible_lines + 1.).max(0.)
501 } else {
502 display_map.max_point().row().saturating_sub(1) as f32
503 };
504 if scroll_position.y() > max_scroll_top {
505 scroll_position.set_y(max_scroll_top);
506 self.set_scroll_position(scroll_position, cx);
507 }
508
509 if self.autoscroll_requested {
510 self.autoscroll_requested = false;
511 } else {
512 return false;
513 }
514
515 let selections = self.selections(cx);
516 let first_cursor_top = selections
517 .first()
518 .unwrap()
519 .head()
520 .to_display_point(&display_map, Bias::Left)
521 .row() as f32;
522 let last_cursor_bottom = selections
523 .last()
524 .unwrap()
525 .head()
526 .to_display_point(&display_map, Bias::Right)
527 .row() as f32
528 + 1.0;
529
530 let margin = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
531 0.
532 } else {
533 ((visible_lines - (last_cursor_bottom - first_cursor_top)) / 2.0)
534 .floor()
535 .min(3.0)
536 };
537 if margin < 0.0 {
538 return false;
539 }
540
541 let target_top = (first_cursor_top - margin).max(0.0);
542 let target_bottom = last_cursor_bottom + margin;
543 let start_row = scroll_position.y();
544 let end_row = start_row + visible_lines;
545
546 if target_top < start_row {
547 scroll_position.set_y(target_top);
548 self.set_scroll_position(scroll_position, cx);
549 } else if target_bottom >= end_row {
550 scroll_position.set_y(target_bottom - visible_lines);
551 self.set_scroll_position(scroll_position, cx);
552 }
553
554 true
555 }
556
557 pub fn autoscroll_horizontally(
558 &mut self,
559 start_row: u32,
560 viewport_width: f32,
561 scroll_width: f32,
562 max_glyph_width: f32,
563 layouts: &[text_layout::Line],
564 cx: &mut ViewContext<Self>,
565 ) -> bool {
566 let selections = self.selections(cx);
567 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
568 let mut target_left = std::f32::INFINITY;
569 let mut target_right = 0.0_f32;
570 for selection in selections.iter() {
571 let head = selection.head().to_display_point(&display_map, Bias::Left);
572 let start_column = head.column().saturating_sub(3);
573 let end_column = cmp::min(display_map.line_len(head.row()), head.column() + 3);
574 target_left = target_left
575 .min(layouts[(head.row() - start_row) as usize].x_for_index(start_column as usize));
576 target_right = target_right.max(
577 layouts[(head.row() - start_row) as usize].x_for_index(end_column as usize)
578 + max_glyph_width,
579 );
580 }
581 target_right = target_right.min(scroll_width);
582
583 if target_right - target_left > viewport_width {
584 return false;
585 }
586
587 let scroll_left = self.scroll_position.x() * max_glyph_width;
588 let scroll_right = scroll_left + viewport_width;
589
590 if target_left < scroll_left {
591 self.scroll_position.set_x(target_left / max_glyph_width);
592 true
593 } else if target_right > scroll_right {
594 self.scroll_position
595 .set_x((target_right - viewport_width) / max_glyph_width);
596 true
597 } else {
598 false
599 }
600 }
601
602 fn select(&mut self, Select(phase): &Select, cx: &mut ViewContext<Self>) {
603 match phase {
604 SelectPhase::Begin { position, add } => self.begin_selection(*position, *add, cx),
605 SelectPhase::Update {
606 position,
607 scroll_position,
608 } => self.update_selection(*position, *scroll_position, cx),
609 SelectPhase::End => self.end_selection(cx),
610 }
611 }
612
613 fn begin_selection(&mut self, position: DisplayPoint, add: bool, cx: &mut ViewContext<Self>) {
614 if !self.focused {
615 cx.focus_self();
616 cx.emit(Event::Activate);
617 }
618
619 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
620 let cursor = display_map.anchor_before(position, Bias::Left);
621 let selection = Selection {
622 id: post_inc(&mut self.next_selection_id),
623 start: cursor.clone(),
624 end: cursor,
625 reversed: false,
626 goal: SelectionGoal::None,
627 };
628
629 if !add {
630 self.update_selections(Vec::new(), false, cx);
631 }
632 self.pending_selection = Some(selection);
633
634 cx.notify();
635 }
636
637 fn update_selection(
638 &mut self,
639 position: DisplayPoint,
640 scroll_position: Vector2F,
641 cx: &mut ViewContext<Self>,
642 ) {
643 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
644 let buffer = self.buffer.read(cx);
645 let cursor = display_map.anchor_before(position, Bias::Left);
646 if let Some(selection) = self.pending_selection.as_mut() {
647 selection.set_head(buffer, cursor);
648 } else {
649 log::error!("update_selection dispatched with no pending selection");
650 return;
651 }
652
653 self.set_scroll_position(scroll_position, cx);
654 cx.notify();
655 }
656
657 fn end_selection(&mut self, cx: &mut ViewContext<Self>) {
658 if let Some(selection) = self.pending_selection.take() {
659 let mut selections = self.selections(cx).to_vec();
660 let ix = self.selection_insertion_index(&selections, &selection.start, cx.as_ref());
661 selections.insert(ix, selection);
662 self.update_selections(selections, false, cx);
663 }
664 }
665
666 pub fn is_selecting(&self) -> bool {
667 self.pending_selection.is_some()
668 }
669
670 pub fn cancel(&mut self, _: &Cancel, cx: &mut ViewContext<Self>) {
671 if let Some(pending_selection) = self.pending_selection.take() {
672 let selections = self.selections(cx);
673 if selections.is_empty() {
674 self.update_selections(vec![pending_selection], true, cx);
675 }
676 } else {
677 let selections = self.selections(cx);
678 let mut oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
679 if selections.len() == 1 {
680 oldest_selection.start = oldest_selection.head().clone();
681 oldest_selection.end = oldest_selection.head().clone();
682 }
683 self.update_selections(vec![oldest_selection], true, cx);
684 }
685 }
686
687 fn select_ranges<I, T>(&mut self, ranges: I, autoscroll: bool, cx: &mut ViewContext<Self>)
688 where
689 I: IntoIterator<Item = Range<T>>,
690 T: ToOffset,
691 {
692 let buffer = self.buffer.read(cx);
693 let mut selections = Vec::new();
694 for range in ranges {
695 let mut start = range.start.to_offset(buffer);
696 let mut end = range.end.to_offset(buffer);
697 let reversed = if start > end {
698 mem::swap(&mut start, &mut end);
699 true
700 } else {
701 false
702 };
703 selections.push(Selection {
704 id: post_inc(&mut self.next_selection_id),
705 start: buffer.anchor_before(start),
706 end: buffer.anchor_before(end),
707 reversed,
708 goal: SelectionGoal::None,
709 });
710 }
711 self.update_selections(selections, autoscroll, cx);
712 }
713
714 #[cfg(test)]
715 fn select_display_ranges<'a, T>(
716 &mut self,
717 ranges: T,
718 cx: &mut ViewContext<Self>,
719 ) -> anyhow::Result<()>
720 where
721 T: IntoIterator<Item = &'a Range<DisplayPoint>>,
722 {
723 let mut selections = Vec::new();
724 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
725 for range in ranges {
726 let mut start = range.start;
727 let mut end = range.end;
728 let reversed = if start > end {
729 mem::swap(&mut start, &mut end);
730 true
731 } else {
732 false
733 };
734
735 selections.push(Selection {
736 id: post_inc(&mut self.next_selection_id),
737 start: display_map.anchor_before(start, Bias::Left),
738 end: display_map.anchor_before(end, Bias::Left),
739 reversed,
740 goal: SelectionGoal::None,
741 });
742 }
743 self.update_selections(selections, false, cx);
744 Ok(())
745 }
746
747 pub fn handle_input(&mut self, action: &Input, cx: &mut ViewContext<Self>) {
748 let text = action.0.as_ref();
749 if !self.skip_autoclose_end(text, cx) {
750 self.start_transaction(cx);
751 self.insert(text, cx);
752 self.autoclose_pairs(cx);
753 self.end_transaction(cx);
754 }
755 }
756
757 pub fn newline(&mut self, _: &Newline, cx: &mut ViewContext<Self>) {
758 self.start_transaction(cx);
759 let mut old_selections = SmallVec::<[_; 32]>::new();
760 {
761 let selections = self.selections(cx);
762 let buffer = self.buffer.read(cx);
763 for selection in selections.iter() {
764 let start_point = selection.start.to_point(buffer);
765 let indent = buffer
766 .indent_column_for_line(start_point.row)
767 .min(start_point.column);
768 let start = selection.start.to_offset(buffer);
769 let end = selection.end.to_offset(buffer);
770
771 let mut insert_extra_newline = false;
772 if let Some(language) = buffer.language() {
773 let leading_whitespace_len = buffer
774 .reversed_chars_at(start)
775 .take_while(|c| c.is_whitespace() && *c != '\n')
776 .map(|c| c.len_utf8())
777 .sum::<usize>();
778
779 let trailing_whitespace_len = buffer
780 .chars_at(end)
781 .take_while(|c| c.is_whitespace() && *c != '\n')
782 .map(|c| c.len_utf8())
783 .sum::<usize>();
784
785 insert_extra_newline = language.brackets().iter().any(|pair| {
786 let pair_start = pair.start.trim_end();
787 let pair_end = pair.end.trim_start();
788
789 pair.newline
790 && buffer.contains_str_at(end + trailing_whitespace_len, pair_end)
791 && buffer.contains_str_at(
792 (start - leading_whitespace_len).saturating_sub(pair_start.len()),
793 pair_start,
794 )
795 });
796 }
797
798 old_selections.push((selection.id, start..end, indent, insert_extra_newline));
799 }
800 }
801
802 let mut new_selections = Vec::with_capacity(old_selections.len());
803 self.buffer.update(cx, |buffer, cx| {
804 let mut delta = 0_isize;
805 let mut pending_edit: Option<PendingEdit> = None;
806 for (_, range, indent, insert_extra_newline) in &old_selections {
807 if pending_edit.as_ref().map_or(false, |pending| {
808 pending.indent != *indent
809 || pending.insert_extra_newline != *insert_extra_newline
810 }) {
811 let pending = pending_edit.take().unwrap();
812 let mut new_text = String::with_capacity(1 + pending.indent as usize);
813 new_text.push('\n');
814 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
815 if pending.insert_extra_newline {
816 new_text = new_text.repeat(2);
817 }
818 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
819 delta += pending.delta;
820 }
821
822 let start = (range.start as isize + delta) as usize;
823 let end = (range.end as isize + delta) as usize;
824 let mut text_len = *indent as usize + 1;
825 if *insert_extra_newline {
826 text_len *= 2;
827 }
828
829 let pending = pending_edit.get_or_insert_with(Default::default);
830 pending.delta += text_len as isize - (end - start) as isize;
831 pending.indent = *indent;
832 pending.insert_extra_newline = *insert_extra_newline;
833 pending.ranges.push(start..end);
834 }
835
836 let pending = pending_edit.unwrap();
837 let mut new_text = String::with_capacity(1 + pending.indent as usize);
838 new_text.push('\n');
839 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
840 if pending.insert_extra_newline {
841 new_text = new_text.repeat(2);
842 }
843 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
844
845 let mut delta = 0_isize;
846 new_selections.extend(old_selections.into_iter().map(
847 |(id, range, indent, insert_extra_newline)| {
848 let start = (range.start as isize + delta) as usize;
849 let end = (range.end as isize + delta) as usize;
850 let text_before_cursor_len = indent as usize + 1;
851 let anchor = buffer.anchor_before(start + text_before_cursor_len);
852 let text_len = if insert_extra_newline {
853 text_before_cursor_len * 2
854 } else {
855 text_before_cursor_len
856 };
857 delta += text_len as isize - (end - start) as isize;
858 Selection {
859 id,
860 start: anchor.clone(),
861 end: anchor,
862 reversed: false,
863 goal: SelectionGoal::None,
864 }
865 },
866 ))
867 });
868
869 self.update_selections(new_selections, true, cx);
870 self.end_transaction(cx);
871
872 #[derive(Default)]
873 struct PendingEdit {
874 indent: u32,
875 insert_extra_newline: bool,
876 delta: isize,
877 ranges: SmallVec<[Range<usize>; 32]>,
878 }
879 }
880
881 fn insert(&mut self, text: &str, cx: &mut ViewContext<Self>) {
882 self.start_transaction(cx);
883 let mut old_selections = SmallVec::<[_; 32]>::new();
884 {
885 let selections = self.selections(cx);
886 let buffer = self.buffer.read(cx);
887 for selection in selections.iter() {
888 let start = selection.start.to_offset(buffer);
889 let end = selection.end.to_offset(buffer);
890 old_selections.push((selection.id, start..end));
891 }
892 }
893
894 let mut new_selections = Vec::new();
895 self.buffer.update(cx, |buffer, cx| {
896 let edit_ranges = old_selections.iter().map(|(_, range)| range.clone());
897 buffer.edit_with_autoindent(edit_ranges, text, cx);
898 let text_len = text.len() as isize;
899 let mut delta = 0_isize;
900 new_selections = old_selections
901 .into_iter()
902 .map(|(id, range)| {
903 let start = range.start as isize;
904 let end = range.end as isize;
905 let anchor = buffer.anchor_before((start + delta + text_len) as usize);
906 let deleted_count = end - start;
907 delta += text_len - deleted_count;
908 Selection {
909 id,
910 start: anchor.clone(),
911 end: anchor,
912 reversed: false,
913 goal: SelectionGoal::None,
914 }
915 })
916 .collect();
917 });
918
919 self.update_selections(new_selections, true, cx);
920 self.end_transaction(cx);
921 }
922
923 fn autoclose_pairs(&mut self, cx: &mut ViewContext<Self>) {
924 let selections = self.selections(cx);
925 let new_autoclose_pair_state = self.buffer.update(cx, |buffer, cx| {
926 let autoclose_pair = buffer.language().and_then(|language| {
927 let first_selection_start = selections.first().unwrap().start.to_offset(&*buffer);
928 let pair = language.brackets().iter().find(|pair| {
929 buffer.contains_str_at(
930 first_selection_start.saturating_sub(pair.start.len()),
931 &pair.start,
932 )
933 });
934 pair.and_then(|pair| {
935 let should_autoclose = selections[1..].iter().all(|selection| {
936 let selection_start = selection.start.to_offset(&*buffer);
937 buffer.contains_str_at(
938 selection_start.saturating_sub(pair.start.len()),
939 &pair.start,
940 )
941 });
942
943 if should_autoclose {
944 Some(pair.clone())
945 } else {
946 None
947 }
948 })
949 });
950
951 autoclose_pair.and_then(|pair| {
952 let selection_ranges = selections
953 .iter()
954 .map(|selection| {
955 let start = selection.start.to_offset(&*buffer);
956 start..start
957 })
958 .collect::<SmallVec<[_; 32]>>();
959
960 buffer.edit(selection_ranges, &pair.end, cx);
961
962 if pair.end.len() == 1 {
963 Some(BracketPairState {
964 ranges: selections
965 .iter()
966 .map(|selection| {
967 selection.start.bias_left(buffer)
968 ..selection.start.bias_right(buffer)
969 })
970 .collect(),
971 pair,
972 })
973 } else {
974 None
975 }
976 })
977 });
978 self.autoclose_stack.extend(new_autoclose_pair_state);
979 }
980
981 fn skip_autoclose_end(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
982 let old_selections = self.selections(cx);
983 let autoclose_pair_state = if let Some(autoclose_pair_state) = self.autoclose_stack.last() {
984 autoclose_pair_state
985 } else {
986 return false;
987 };
988 if text != autoclose_pair_state.pair.end {
989 return false;
990 }
991
992 debug_assert_eq!(old_selections.len(), autoclose_pair_state.ranges.len());
993
994 let buffer = self.buffer.read(cx);
995 let old_selection_ranges: SmallVec<[_; 32]> = old_selections
996 .iter()
997 .map(|selection| (selection.id, selection.offset_range(buffer)))
998 .collect();
999 if old_selection_ranges
1000 .iter()
1001 .zip(&autoclose_pair_state.ranges)
1002 .all(|((_, selection_range), autoclose_range)| {
1003 let autoclose_range_end = autoclose_range.end.to_offset(buffer);
1004 selection_range.is_empty() && selection_range.start == autoclose_range_end
1005 })
1006 {
1007 let new_selections = old_selection_ranges
1008 .into_iter()
1009 .map(|(id, range)| {
1010 let new_head = buffer.anchor_before(range.start + 1);
1011 Selection {
1012 id,
1013 start: new_head.clone(),
1014 end: new_head,
1015 reversed: false,
1016 goal: SelectionGoal::None,
1017 }
1018 })
1019 .collect();
1020 self.autoclose_stack.pop();
1021 self.update_selections(new_selections, true, cx);
1022 true
1023 } else {
1024 false
1025 }
1026 }
1027
1028 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
1029 self.start_transaction(cx);
1030 self.select_all(&SelectAll, cx);
1031 self.insert("", cx);
1032 self.end_transaction(cx);
1033 }
1034
1035 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
1036 self.start_transaction(cx);
1037 let mut selections = self.selections(cx).to_vec();
1038 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1039 {
1040 let buffer = self.buffer.read(cx);
1041 for selection in &mut selections {
1042 let range = selection.point_range(buffer);
1043 if range.start == range.end {
1044 let head = selection.head().to_display_point(&display_map, Bias::Left);
1045 let cursor = display_map
1046 .anchor_before(movement::left(&display_map, head).unwrap(), Bias::Left);
1047 selection.set_head(&buffer, cursor);
1048 selection.goal = SelectionGoal::None;
1049 }
1050 }
1051 }
1052
1053 self.update_selections(selections, true, cx);
1054 self.insert("", cx);
1055 self.end_transaction(cx);
1056 }
1057
1058 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
1059 self.start_transaction(cx);
1060 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1061 let mut selections = self.selections(cx).to_vec();
1062 {
1063 let buffer = self.buffer.read(cx);
1064 for selection in &mut selections {
1065 let range = selection.point_range(buffer);
1066 if range.start == range.end {
1067 let head = selection.head().to_display_point(&display_map, Bias::Left);
1068 let cursor = display_map
1069 .anchor_before(movement::right(&display_map, head).unwrap(), Bias::Right);
1070 selection.set_head(&buffer, cursor);
1071 selection.goal = SelectionGoal::None;
1072 }
1073 }
1074 }
1075
1076 self.update_selections(selections, true, cx);
1077 self.insert(&"", cx);
1078 self.end_transaction(cx);
1079 }
1080
1081 pub fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
1082 self.start_transaction(cx);
1083 let tab_size = self.build_settings.borrow()(cx).tab_size;
1084 let mut selections = self.selections(cx).to_vec();
1085 self.buffer.update(cx, |buffer, cx| {
1086 let mut last_indented_row = None;
1087 for selection in &mut selections {
1088 let mut range = selection.point_range(buffer);
1089 if range.is_empty() {
1090 let char_column = buffer
1091 .chars_for_range(Point::new(range.start.row, 0)..range.start)
1092 .count();
1093 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
1094 buffer.edit(
1095 [range.start..range.start],
1096 " ".repeat(chars_to_next_tab_stop),
1097 cx,
1098 );
1099 range.start.column += chars_to_next_tab_stop as u32;
1100
1101 let head = buffer.anchor_before(range.start);
1102 selection.start = head.clone();
1103 selection.end = head;
1104 } else {
1105 for row in range.start.row..=range.end.row {
1106 if last_indented_row != Some(row) {
1107 let char_column = buffer.indent_column_for_line(row) as usize;
1108 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
1109 let row_start = Point::new(row, 0);
1110 buffer.edit(
1111 [row_start..row_start],
1112 " ".repeat(chars_to_next_tab_stop),
1113 cx,
1114 );
1115 last_indented_row = Some(row);
1116 }
1117 }
1118 }
1119 }
1120 });
1121
1122 self.update_selections(selections, true, cx);
1123 self.end_transaction(cx);
1124 }
1125
1126 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
1127 self.start_transaction(cx);
1128
1129 let selections = self.selections(cx);
1130 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1131 let buffer = self.buffer.read(cx);
1132
1133 let mut new_cursors = Vec::new();
1134 let mut edit_ranges = Vec::new();
1135
1136 let mut selections = selections.iter().peekable();
1137 while let Some(selection) = selections.next() {
1138 let mut rows = selection.spanned_rows(false, &display_map).buffer_rows;
1139 let goal_display_column = selection
1140 .head()
1141 .to_display_point(&display_map, Bias::Left)
1142 .column();
1143
1144 // Accumulate contiguous regions of rows that we want to delete.
1145 while let Some(next_selection) = selections.peek() {
1146 let next_rows = next_selection.spanned_rows(false, &display_map).buffer_rows;
1147 if next_rows.start <= rows.end {
1148 rows.end = next_rows.end;
1149 selections.next().unwrap();
1150 } else {
1151 break;
1152 }
1153 }
1154
1155 let mut edit_start = Point::new(rows.start, 0).to_offset(buffer);
1156 let edit_end;
1157 let cursor_buffer_row;
1158 if buffer.max_point().row >= rows.end {
1159 // If there's a line after the range, delete the \n from the end of the row range
1160 // and position the cursor on the next line.
1161 edit_end = Point::new(rows.end, 0).to_offset(buffer);
1162 cursor_buffer_row = rows.end;
1163 } else {
1164 // If there isn't a line after the range, delete the \n from the line before the
1165 // start of the row range and position the cursor there.
1166 edit_start = edit_start.saturating_sub(1);
1167 edit_end = buffer.len();
1168 cursor_buffer_row = rows.start.saturating_sub(1);
1169 }
1170
1171 let mut cursor =
1172 Point::new(cursor_buffer_row, 0).to_display_point(&display_map, Bias::Left);
1173 *cursor.column_mut() =
1174 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
1175
1176 new_cursors.push((
1177 selection.id,
1178 cursor.to_buffer_point(&display_map, Bias::Left),
1179 ));
1180 edit_ranges.push(edit_start..edit_end);
1181 }
1182
1183 new_cursors.sort_unstable_by_key(|(_, range)| range.clone());
1184 let new_selections = new_cursors
1185 .into_iter()
1186 .map(|(id, cursor)| {
1187 let anchor = buffer.anchor_before(cursor);
1188 Selection {
1189 id,
1190 start: anchor.clone(),
1191 end: anchor,
1192 reversed: false,
1193 goal: SelectionGoal::None,
1194 }
1195 })
1196 .collect();
1197 self.buffer
1198 .update(cx, |buffer, cx| buffer.edit(edit_ranges, "", cx));
1199 self.update_selections(new_selections, true, cx);
1200 self.end_transaction(cx);
1201 }
1202
1203 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
1204 self.start_transaction(cx);
1205
1206 let mut selections = self.selections(cx).to_vec();
1207 {
1208 // Temporarily bias selections right to allow newly duplicate lines to push them down
1209 // when the selections are at the beginning of a line.
1210 let buffer = self.buffer.read(cx);
1211 for selection in &mut selections {
1212 selection.start = selection.start.bias_right(buffer);
1213 selection.end = selection.end.bias_right(buffer);
1214 }
1215 }
1216 self.update_selections(selections.clone(), false, cx);
1217
1218 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1219 let buffer = self.buffer.read(cx);
1220
1221 let mut edits = Vec::new();
1222 let mut selections_iter = selections.iter_mut().peekable();
1223 while let Some(selection) = selections_iter.next() {
1224 // Avoid duplicating the same lines twice.
1225 let mut rows = selection.spanned_rows(false, &display_map).buffer_rows;
1226 while let Some(next_selection) = selections_iter.peek() {
1227 let next_rows = next_selection.spanned_rows(false, &display_map).buffer_rows;
1228 if next_rows.start <= rows.end - 1 {
1229 rows.end = next_rows.end;
1230 selections_iter.next().unwrap();
1231 } else {
1232 break;
1233 }
1234 }
1235
1236 // Copy the text from the selected row region and splice it at the start of the region.
1237 let start = Point::new(rows.start, 0);
1238 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
1239 let text = buffer
1240 .text_for_range(start..end)
1241 .chain(Some("\n"))
1242 .collect::<String>();
1243 edits.push((start, text));
1244 }
1245
1246 self.buffer.update(cx, |buffer, cx| {
1247 for (offset, text) in edits.into_iter().rev() {
1248 buffer.edit(Some(offset..offset), text, cx);
1249 }
1250 });
1251
1252 // Restore bias on selections.
1253 let buffer = self.buffer.read(cx);
1254 for selection in &mut selections {
1255 selection.start = selection.start.bias_left(buffer);
1256 selection.end = selection.end.bias_left(buffer);
1257 }
1258 self.update_selections(selections, true, cx);
1259
1260 self.end_transaction(cx);
1261 }
1262
1263 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
1264 self.start_transaction(cx);
1265
1266 let selections = self.selections(cx);
1267 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1268 let buffer = self.buffer.read(cx);
1269
1270 let mut edits = Vec::new();
1271 let mut new_selection_ranges = Vec::new();
1272 let mut old_folds = Vec::new();
1273 let mut new_folds = Vec::new();
1274
1275 let mut selections = selections.iter().peekable();
1276 let mut contiguous_selections = Vec::new();
1277 while let Some(selection) = selections.next() {
1278 // Accumulate contiguous regions of rows that we want to move.
1279 contiguous_selections.push(selection.point_range(buffer));
1280 let SpannedRows {
1281 mut buffer_rows,
1282 mut display_rows,
1283 } = selection.spanned_rows(false, &display_map);
1284
1285 while let Some(next_selection) = selections.peek() {
1286 let SpannedRows {
1287 buffer_rows: next_buffer_rows,
1288 display_rows: next_display_rows,
1289 } = next_selection.spanned_rows(false, &display_map);
1290 if next_buffer_rows.start <= buffer_rows.end {
1291 buffer_rows.end = next_buffer_rows.end;
1292 display_rows.end = next_display_rows.end;
1293 contiguous_selections.push(next_selection.point_range(buffer));
1294 selections.next().unwrap();
1295 } else {
1296 break;
1297 }
1298 }
1299
1300 // Cut the text from the selected rows and paste it at the start of the previous line.
1301 if display_rows.start != 0 {
1302 let start = Point::new(buffer_rows.start, 0).to_offset(buffer);
1303 let end = Point::new(buffer_rows.end - 1, buffer.line_len(buffer_rows.end - 1))
1304 .to_offset(buffer);
1305
1306 let prev_row_display_start = DisplayPoint::new(display_rows.start - 1, 0);
1307 let prev_row_buffer_start = display_map.prev_row_boundary(prev_row_display_start).1;
1308 let prev_row_buffer_start_offset = prev_row_buffer_start.to_offset(buffer);
1309
1310 let mut text = String::new();
1311 text.extend(buffer.text_for_range(start..end));
1312 text.push('\n');
1313 edits.push((
1314 prev_row_buffer_start_offset..prev_row_buffer_start_offset,
1315 text,
1316 ));
1317 edits.push((start - 1..end, String::new()));
1318
1319 let row_delta = buffer_rows.start - prev_row_buffer_start.row;
1320
1321 // Move selections up.
1322 for range in &mut contiguous_selections {
1323 range.start.row -= row_delta;
1324 range.end.row -= row_delta;
1325 }
1326
1327 // Move folds up.
1328 old_folds.push(start..end);
1329 for fold in display_map.folds_in_range(start..end) {
1330 let mut start = fold.start.to_point(buffer);
1331 let mut end = fold.end.to_point(buffer);
1332 start.row -= row_delta;
1333 end.row -= row_delta;
1334 new_folds.push(start..end);
1335 }
1336 }
1337
1338 new_selection_ranges.extend(contiguous_selections.drain(..));
1339 }
1340
1341 self.unfold_ranges(old_folds, cx);
1342 self.buffer.update(cx, |buffer, cx| {
1343 for (range, text) in edits.into_iter().rev() {
1344 buffer.edit(Some(range), text, cx);
1345 }
1346 });
1347 self.fold_ranges(new_folds, cx);
1348 self.select_ranges(new_selection_ranges, true, cx);
1349
1350 self.end_transaction(cx);
1351 }
1352
1353 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
1354 self.start_transaction(cx);
1355
1356 let selections = self.selections(cx);
1357 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1358 let buffer = self.buffer.read(cx);
1359
1360 let mut edits = Vec::new();
1361 let mut new_selection_ranges = Vec::new();
1362 let mut old_folds = Vec::new();
1363 let mut new_folds = Vec::new();
1364
1365 let mut selections = selections.iter().peekable();
1366 let mut contiguous_selections = Vec::new();
1367 while let Some(selection) = selections.next() {
1368 // Accumulate contiguous regions of rows that we want to move.
1369 contiguous_selections.push(selection.point_range(buffer));
1370 let SpannedRows {
1371 mut buffer_rows,
1372 mut display_rows,
1373 } = selection.spanned_rows(false, &display_map);
1374 while let Some(next_selection) = selections.peek() {
1375 let SpannedRows {
1376 buffer_rows: next_buffer_rows,
1377 display_rows: next_display_rows,
1378 } = next_selection.spanned_rows(false, &display_map);
1379 if next_buffer_rows.start <= buffer_rows.end {
1380 buffer_rows.end = next_buffer_rows.end;
1381 display_rows.end = next_display_rows.end;
1382 contiguous_selections.push(next_selection.point_range(buffer));
1383 selections.next().unwrap();
1384 } else {
1385 break;
1386 }
1387 }
1388
1389 // Cut the text from the selected rows and paste it at the end of the next line.
1390 if display_rows.end <= display_map.max_point().row() {
1391 let start = Point::new(buffer_rows.start, 0).to_offset(buffer);
1392 let end = Point::new(buffer_rows.end - 1, buffer.line_len(buffer_rows.end - 1))
1393 .to_offset(buffer);
1394
1395 let next_row_display_end =
1396 DisplayPoint::new(display_rows.end, display_map.line_len(display_rows.end));
1397 let next_row_buffer_end = display_map.next_row_boundary(next_row_display_end).1;
1398 let next_row_buffer_end_offset = next_row_buffer_end.to_offset(buffer);
1399
1400 let mut text = String::new();
1401 text.push('\n');
1402 text.extend(buffer.text_for_range(start..end));
1403 edits.push((start..end + 1, String::new()));
1404 edits.push((next_row_buffer_end_offset..next_row_buffer_end_offset, text));
1405
1406 let row_delta = next_row_buffer_end.row - buffer_rows.end + 1;
1407
1408 // Move selections down.
1409 for range in &mut contiguous_selections {
1410 range.start.row += row_delta;
1411 range.end.row += row_delta;
1412 }
1413
1414 // Move folds down.
1415 old_folds.push(start..end);
1416 for fold in display_map.folds_in_range(start..end) {
1417 let mut start = fold.start.to_point(buffer);
1418 let mut end = fold.end.to_point(buffer);
1419 start.row += row_delta;
1420 end.row += row_delta;
1421 new_folds.push(start..end);
1422 }
1423 }
1424
1425 new_selection_ranges.extend(contiguous_selections.drain(..));
1426 }
1427
1428 self.unfold_ranges(old_folds, cx);
1429 self.buffer.update(cx, |buffer, cx| {
1430 for (range, text) in edits.into_iter().rev() {
1431 buffer.edit(Some(range), text, cx);
1432 }
1433 });
1434 self.fold_ranges(new_folds, cx);
1435 self.select_ranges(new_selection_ranges, true, cx);
1436
1437 self.end_transaction(cx);
1438 }
1439
1440 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
1441 self.start_transaction(cx);
1442 let mut text = String::new();
1443 let mut selections = self.selections(cx).to_vec();
1444 let mut clipboard_selections = Vec::with_capacity(selections.len());
1445 {
1446 let buffer = self.buffer.read(cx);
1447 let max_point = buffer.max_point();
1448 for selection in &mut selections {
1449 let mut start = selection.start.to_point(buffer);
1450 let mut end = selection.end.to_point(buffer);
1451 let is_entire_line = start == end;
1452 if is_entire_line {
1453 start = Point::new(start.row, 0);
1454 end = cmp::min(max_point, Point::new(start.row + 1, 0));
1455 selection.start = buffer.anchor_before(start);
1456 selection.end = buffer.anchor_before(end);
1457 }
1458 let mut len = 0;
1459 for chunk in buffer.text_for_range(start..end) {
1460 text.push_str(chunk);
1461 len += chunk.len();
1462 }
1463 clipboard_selections.push(ClipboardSelection {
1464 len,
1465 is_entire_line,
1466 });
1467 }
1468 }
1469 self.update_selections(selections, true, cx);
1470 self.insert("", cx);
1471 self.end_transaction(cx);
1472
1473 cx.as_mut()
1474 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
1475 }
1476
1477 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
1478 let selections = self.selections(cx);
1479 let buffer = self.buffer.read(cx);
1480 let max_point = buffer.max_point();
1481 let mut text = String::new();
1482 let mut clipboard_selections = Vec::with_capacity(selections.len());
1483 for selection in selections.iter() {
1484 let mut start = selection.start.to_point(buffer);
1485 let mut end = selection.end.to_point(buffer);
1486 let is_entire_line = start == end;
1487 if is_entire_line {
1488 start = Point::new(start.row, 0);
1489 end = cmp::min(max_point, Point::new(start.row + 1, 0));
1490 }
1491 let mut len = 0;
1492 for chunk in buffer.text_for_range(start..end) {
1493 text.push_str(chunk);
1494 len += chunk.len();
1495 }
1496 clipboard_selections.push(ClipboardSelection {
1497 len,
1498 is_entire_line,
1499 });
1500 }
1501
1502 cx.as_mut()
1503 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
1504 }
1505
1506 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
1507 if let Some(item) = cx.as_mut().read_from_clipboard() {
1508 let clipboard_text = item.text();
1509 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
1510 let selections = self.selections(cx);
1511 let all_selections_were_entire_line =
1512 clipboard_selections.iter().all(|s| s.is_entire_line);
1513 if clipboard_selections.len() != selections.len() {
1514 clipboard_selections.clear();
1515 }
1516
1517 let mut start_offset = 0;
1518 let mut new_selections = Vec::with_capacity(selections.len());
1519 for (i, selection) in selections.iter().enumerate() {
1520 let to_insert;
1521 let entire_line;
1522 if let Some(clipboard_selection) = clipboard_selections.get(i) {
1523 let end_offset = start_offset + clipboard_selection.len;
1524 to_insert = &clipboard_text[start_offset..end_offset];
1525 entire_line = clipboard_selection.is_entire_line;
1526 start_offset = end_offset
1527 } else {
1528 to_insert = clipboard_text.as_str();
1529 entire_line = all_selections_were_entire_line;
1530 }
1531
1532 self.buffer.update(cx, |buffer, cx| {
1533 let selection_start = selection.start.to_point(&*buffer);
1534 let selection_end = selection.end.to_point(&*buffer);
1535
1536 // If the corresponding selection was empty when this slice of the
1537 // clipboard text was written, then the entire line containing the
1538 // selection was copied. If this selection is also currently empty,
1539 // then paste the line before the current line of the buffer.
1540 let new_selection_start = selection.end.bias_right(buffer);
1541 if selection_start == selection_end && entire_line {
1542 let line_start = Point::new(selection_start.row, 0);
1543 buffer.edit(Some(line_start..line_start), to_insert, cx);
1544 } else {
1545 buffer.edit(Some(&selection.start..&selection.end), to_insert, cx);
1546 };
1547
1548 let new_selection_start = new_selection_start.bias_left(buffer);
1549 new_selections.push(Selection {
1550 id: selection.id,
1551 start: new_selection_start.clone(),
1552 end: new_selection_start,
1553 reversed: false,
1554 goal: SelectionGoal::None,
1555 });
1556 });
1557 }
1558 self.update_selections(new_selections, true, cx);
1559 } else {
1560 self.insert(clipboard_text, cx);
1561 }
1562 }
1563 }
1564
1565 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
1566 self.buffer.update(cx, |buffer, cx| buffer.undo(cx));
1567 }
1568
1569 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
1570 self.buffer.update(cx, |buffer, cx| buffer.redo(cx));
1571 }
1572
1573 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
1574 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1575 let mut selections = self.selections(cx).to_vec();
1576 {
1577 for selection in &mut selections {
1578 let start = selection.start.to_display_point(&display_map, Bias::Left);
1579 let end = selection.end.to_display_point(&display_map, Bias::Left);
1580
1581 if start != end {
1582 selection.end = selection.start.clone();
1583 } else {
1584 let cursor = display_map
1585 .anchor_before(movement::left(&display_map, start).unwrap(), Bias::Left);
1586 selection.start = cursor.clone();
1587 selection.end = cursor;
1588 }
1589 selection.reversed = false;
1590 selection.goal = SelectionGoal::None;
1591 }
1592 }
1593 self.update_selections(selections, true, cx);
1594 }
1595
1596 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
1597 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1598 let mut selections = self.selections(cx).to_vec();
1599 {
1600 let buffer = self.buffer.read(cx);
1601 for selection in &mut selections {
1602 let head = selection.head().to_display_point(&display_map, Bias::Left);
1603 let cursor = display_map
1604 .anchor_before(movement::left(&display_map, head).unwrap(), Bias::Left);
1605 selection.set_head(&buffer, cursor);
1606 selection.goal = SelectionGoal::None;
1607 }
1608 }
1609 self.update_selections(selections, true, cx);
1610 }
1611
1612 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
1613 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1614 let mut selections = self.selections(cx).to_vec();
1615 {
1616 for selection in &mut selections {
1617 let start = selection.start.to_display_point(&display_map, Bias::Left);
1618 let end = selection.end.to_display_point(&display_map, Bias::Left);
1619
1620 if start != end {
1621 selection.start = selection.end.clone();
1622 } else {
1623 let cursor = display_map
1624 .anchor_before(movement::right(&display_map, end).unwrap(), Bias::Right);
1625 selection.start = cursor.clone();
1626 selection.end = cursor;
1627 }
1628 selection.reversed = false;
1629 selection.goal = SelectionGoal::None;
1630 }
1631 }
1632 self.update_selections(selections, true, cx);
1633 }
1634
1635 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
1636 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1637 let mut selections = self.selections(cx).to_vec();
1638 {
1639 let app = cx.as_ref();
1640 let buffer = self.buffer.read(app);
1641 for selection in &mut selections {
1642 let head = selection.head().to_display_point(&display_map, Bias::Left);
1643 let cursor = display_map
1644 .anchor_before(movement::right(&display_map, head).unwrap(), Bias::Right);
1645 selection.set_head(&buffer, cursor);
1646 selection.goal = SelectionGoal::None;
1647 }
1648 }
1649 self.update_selections(selections, true, cx);
1650 }
1651
1652 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
1653 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1654 if matches!(self.mode, EditorMode::SingleLine) {
1655 cx.propagate_action();
1656 } else {
1657 let mut selections = self.selections(cx).to_vec();
1658 {
1659 for selection in &mut selections {
1660 let start = selection.start.to_display_point(&display_map, Bias::Left);
1661 let end = selection.end.to_display_point(&display_map, Bias::Left);
1662 if start != end {
1663 selection.goal = SelectionGoal::None;
1664 }
1665
1666 let (start, goal) = movement::up(&display_map, start, selection.goal).unwrap();
1667 let cursor = display_map.anchor_before(start, Bias::Left);
1668 selection.start = cursor.clone();
1669 selection.end = cursor;
1670 selection.goal = goal;
1671 selection.reversed = false;
1672 }
1673 }
1674 self.update_selections(selections, true, cx);
1675 }
1676 }
1677
1678 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
1679 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1680 let mut selections = self.selections(cx).to_vec();
1681 {
1682 let app = cx.as_ref();
1683 let buffer = self.buffer.read(app);
1684 for selection in &mut selections {
1685 let head = selection.head().to_display_point(&display_map, Bias::Left);
1686 let (head, goal) = movement::up(&display_map, head, selection.goal).unwrap();
1687 selection.set_head(&buffer, display_map.anchor_before(head, Bias::Left));
1688 selection.goal = goal;
1689 }
1690 }
1691 self.update_selections(selections, true, cx);
1692 }
1693
1694 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
1695 if matches!(self.mode, EditorMode::SingleLine) {
1696 cx.propagate_action();
1697 } else {
1698 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1699 let mut selections = self.selections(cx).to_vec();
1700 {
1701 for selection in &mut selections {
1702 let start = selection.start.to_display_point(&display_map, Bias::Left);
1703 let end = selection.end.to_display_point(&display_map, Bias::Left);
1704 if start != end {
1705 selection.goal = SelectionGoal::None;
1706 }
1707
1708 let (start, goal) = movement::down(&display_map, end, selection.goal).unwrap();
1709 let cursor = display_map.anchor_before(start, Bias::Right);
1710 selection.start = cursor.clone();
1711 selection.end = cursor;
1712 selection.goal = goal;
1713 selection.reversed = false;
1714 }
1715 }
1716 self.update_selections(selections, true, cx);
1717 }
1718 }
1719
1720 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
1721 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1722 let mut selections = self.selections(cx).to_vec();
1723 {
1724 let app = cx.as_ref();
1725 let buffer = self.buffer.read(app);
1726 for selection in &mut selections {
1727 let head = selection.head().to_display_point(&display_map, Bias::Left);
1728 let (head, goal) = movement::down(&display_map, head, selection.goal).unwrap();
1729 selection.set_head(&buffer, display_map.anchor_before(head, Bias::Right));
1730 selection.goal = goal;
1731 }
1732 }
1733 self.update_selections(selections, true, cx);
1734 }
1735
1736 pub fn move_to_previous_word_boundary(
1737 &mut self,
1738 _: &MoveToPreviousWordBoundary,
1739 cx: &mut ViewContext<Self>,
1740 ) {
1741 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1742 let mut selections = self.selections(cx).to_vec();
1743 {
1744 for selection in &mut selections {
1745 let head = selection.head().to_display_point(&display_map, Bias::Left);
1746 let new_head = movement::prev_word_boundary(&display_map, head).unwrap();
1747 let anchor = display_map.anchor_before(new_head, Bias::Left);
1748 selection.start = anchor.clone();
1749 selection.end = anchor;
1750 selection.reversed = false;
1751 selection.goal = SelectionGoal::None;
1752 }
1753 }
1754 self.update_selections(selections, true, cx);
1755 }
1756
1757 pub fn select_to_previous_word_boundary(
1758 &mut self,
1759 _: &SelectToPreviousWordBoundary,
1760 cx: &mut ViewContext<Self>,
1761 ) {
1762 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1763 let mut selections = self.selections(cx).to_vec();
1764 {
1765 let buffer = self.buffer.read(cx);
1766 for selection in &mut selections {
1767 let head = selection.head().to_display_point(&display_map, Bias::Left);
1768 let new_head = movement::prev_word_boundary(&display_map, head).unwrap();
1769 let anchor = display_map.anchor_before(new_head, Bias::Left);
1770 selection.set_head(buffer, anchor);
1771 selection.goal = SelectionGoal::None;
1772 }
1773 }
1774 self.update_selections(selections, true, cx);
1775 }
1776
1777 pub fn delete_to_previous_word_boundary(
1778 &mut self,
1779 _: &DeleteToPreviousWordBoundary,
1780 cx: &mut ViewContext<Self>,
1781 ) {
1782 self.start_transaction(cx);
1783 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1784 let mut selections = self.selections(cx).to_vec();
1785 {
1786 let buffer = self.buffer.read(cx);
1787 for selection in &mut selections {
1788 let range = selection.point_range(buffer);
1789 if range.start == range.end {
1790 let head = selection.head().to_display_point(&display_map, Bias::Left);
1791 let cursor = display_map.anchor_before(
1792 movement::prev_word_boundary(&display_map, head).unwrap(),
1793 Bias::Right,
1794 );
1795 selection.set_head(&buffer, cursor);
1796 selection.goal = SelectionGoal::None;
1797 }
1798 }
1799 }
1800
1801 self.update_selections(selections, true, cx);
1802 self.insert("", cx);
1803 self.end_transaction(cx);
1804 }
1805
1806 pub fn move_to_next_word_boundary(
1807 &mut self,
1808 _: &MoveToNextWordBoundary,
1809 cx: &mut ViewContext<Self>,
1810 ) {
1811 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1812 let mut selections = self.selections(cx).to_vec();
1813 {
1814 for selection in &mut selections {
1815 let head = selection.head().to_display_point(&display_map, Bias::Left);
1816 let new_head = movement::next_word_boundary(&display_map, head).unwrap();
1817 let anchor = display_map.anchor_before(new_head, Bias::Left);
1818 selection.start = anchor.clone();
1819 selection.end = anchor;
1820 selection.reversed = false;
1821 selection.goal = SelectionGoal::None;
1822 }
1823 }
1824 self.update_selections(selections, true, cx);
1825 }
1826
1827 pub fn select_to_next_word_boundary(
1828 &mut self,
1829 _: &SelectToNextWordBoundary,
1830 cx: &mut ViewContext<Self>,
1831 ) {
1832 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1833 let mut selections = self.selections(cx).to_vec();
1834 {
1835 let buffer = self.buffer.read(cx);
1836 for selection in &mut selections {
1837 let head = selection.head().to_display_point(&display_map, Bias::Left);
1838 let new_head = movement::next_word_boundary(&display_map, head).unwrap();
1839 let anchor = display_map.anchor_before(new_head, Bias::Left);
1840 selection.set_head(buffer, anchor);
1841 selection.goal = SelectionGoal::None;
1842 }
1843 }
1844 self.update_selections(selections, true, cx);
1845 }
1846
1847 pub fn delete_to_next_word_boundary(
1848 &mut self,
1849 _: &DeleteToNextWordBoundary,
1850 cx: &mut ViewContext<Self>,
1851 ) {
1852 self.start_transaction(cx);
1853 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1854 let mut selections = self.selections(cx).to_vec();
1855 {
1856 let buffer = self.buffer.read(cx);
1857 for selection in &mut selections {
1858 let range = selection.point_range(buffer);
1859 if range.start == range.end {
1860 let head = selection.head().to_display_point(&display_map, Bias::Left);
1861 let cursor = display_map.anchor_before(
1862 movement::next_word_boundary(&display_map, head).unwrap(),
1863 Bias::Right,
1864 );
1865 selection.set_head(&buffer, cursor);
1866 selection.goal = SelectionGoal::None;
1867 }
1868 }
1869 }
1870
1871 self.update_selections(selections, true, cx);
1872 self.insert("", cx);
1873 self.end_transaction(cx);
1874 }
1875
1876 pub fn move_to_beginning_of_line(
1877 &mut self,
1878 _: &MoveToBeginningOfLine,
1879 cx: &mut ViewContext<Self>,
1880 ) {
1881 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1882 let mut selections = self.selections(cx).to_vec();
1883 {
1884 for selection in &mut selections {
1885 let head = selection.head().to_display_point(&display_map, Bias::Left);
1886 let new_head = movement::line_beginning(&display_map, head, true).unwrap();
1887 let anchor = display_map.anchor_before(new_head, Bias::Left);
1888 selection.start = anchor.clone();
1889 selection.end = anchor;
1890 selection.reversed = false;
1891 selection.goal = SelectionGoal::None;
1892 }
1893 }
1894 self.update_selections(selections, true, cx);
1895 }
1896
1897 pub fn select_to_beginning_of_line(
1898 &mut self,
1899 SelectToBeginningOfLine(toggle_indent): &SelectToBeginningOfLine,
1900 cx: &mut ViewContext<Self>,
1901 ) {
1902 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1903 let mut selections = self.selections(cx).to_vec();
1904 {
1905 let buffer = self.buffer.read(cx);
1906 for selection in &mut selections {
1907 let head = selection.head().to_display_point(&display_map, Bias::Left);
1908 let new_head =
1909 movement::line_beginning(&display_map, head, *toggle_indent).unwrap();
1910 let anchor = display_map.anchor_before(new_head, Bias::Left);
1911 selection.set_head(buffer, anchor);
1912 selection.goal = SelectionGoal::None;
1913 }
1914 }
1915 self.update_selections(selections, true, cx);
1916 }
1917
1918 pub fn delete_to_beginning_of_line(
1919 &mut self,
1920 _: &DeleteToBeginningOfLine,
1921 cx: &mut ViewContext<Self>,
1922 ) {
1923 self.start_transaction(cx);
1924 self.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
1925 self.backspace(&Backspace, cx);
1926 self.end_transaction(cx);
1927 }
1928
1929 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
1930 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1931 let mut selections = self.selections(cx).to_vec();
1932 {
1933 for selection in &mut selections {
1934 let head = selection.head().to_display_point(&display_map, Bias::Left);
1935 let new_head = movement::line_end(&display_map, head).unwrap();
1936 let anchor = display_map.anchor_before(new_head, Bias::Left);
1937 selection.start = anchor.clone();
1938 selection.end = anchor;
1939 selection.reversed = false;
1940 selection.goal = SelectionGoal::None;
1941 }
1942 }
1943 self.update_selections(selections, true, cx);
1944 }
1945
1946 pub fn select_to_end_of_line(&mut self, _: &SelectToEndOfLine, cx: &mut ViewContext<Self>) {
1947 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1948 let mut selections = self.selections(cx).to_vec();
1949 {
1950 let buffer = self.buffer.read(cx);
1951 for selection in &mut selections {
1952 let head = selection.head().to_display_point(&display_map, Bias::Left);
1953 let new_head = movement::line_end(&display_map, head).unwrap();
1954 let anchor = display_map.anchor_before(new_head, Bias::Left);
1955 selection.set_head(buffer, anchor);
1956 selection.goal = SelectionGoal::None;
1957 }
1958 }
1959 self.update_selections(selections, true, cx);
1960 }
1961
1962 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
1963 self.start_transaction(cx);
1964 self.select_to_end_of_line(&SelectToEndOfLine, cx);
1965 self.delete(&Delete, cx);
1966 self.end_transaction(cx);
1967 }
1968
1969 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
1970 self.start_transaction(cx);
1971 self.select_to_end_of_line(&SelectToEndOfLine, cx);
1972 self.cut(&Cut, cx);
1973 self.end_transaction(cx);
1974 }
1975
1976 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
1977 let buffer = self.buffer.read(cx);
1978 let cursor = buffer.anchor_before(Point::new(0, 0));
1979 let selection = Selection {
1980 id: post_inc(&mut self.next_selection_id),
1981 start: cursor.clone(),
1982 end: cursor,
1983 reversed: false,
1984 goal: SelectionGoal::None,
1985 };
1986 self.update_selections(vec![selection], true, cx);
1987 }
1988
1989 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
1990 let mut selection = self.selections(cx).last().unwrap().clone();
1991 selection.set_head(self.buffer.read(cx), Anchor::min());
1992 self.update_selections(vec![selection], true, cx);
1993 }
1994
1995 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
1996 let buffer = self.buffer.read(cx);
1997 let cursor = buffer.anchor_before(buffer.max_point());
1998 let selection = Selection {
1999 id: post_inc(&mut self.next_selection_id),
2000 start: cursor.clone(),
2001 end: cursor,
2002 reversed: false,
2003 goal: SelectionGoal::None,
2004 };
2005 self.update_selections(vec![selection], true, cx);
2006 }
2007
2008 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
2009 let mut selection = self.selections(cx).last().unwrap().clone();
2010 selection.set_head(self.buffer.read(cx), Anchor::max());
2011 self.update_selections(vec![selection], true, cx);
2012 }
2013
2014 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
2015 let selection = Selection {
2016 id: post_inc(&mut self.next_selection_id),
2017 start: Anchor::min(),
2018 end: Anchor::max(),
2019 reversed: false,
2020 goal: SelectionGoal::None,
2021 };
2022 self.update_selections(vec![selection], false, cx);
2023 }
2024
2025 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
2026 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2027 let mut selections = self.selections(cx).to_vec();
2028 let buffer = self.buffer.read(cx);
2029 let max_point = buffer.max_point();
2030 for selection in &mut selections {
2031 let rows = selection.spanned_rows(true, &display_map).buffer_rows;
2032 selection.start = buffer.anchor_before(Point::new(rows.start, 0));
2033 selection.end = buffer.anchor_before(cmp::min(max_point, Point::new(rows.end, 0)));
2034 selection.reversed = false;
2035 }
2036 self.update_selections(selections, true, cx);
2037 }
2038
2039 pub fn split_selection_into_lines(
2040 &mut self,
2041 _: &SplitSelectionIntoLines,
2042 cx: &mut ViewContext<Self>,
2043 ) {
2044 let selections = self.selections(cx);
2045 let buffer = self.buffer.read(cx);
2046
2047 let mut to_unfold = Vec::new();
2048 let mut new_selections = Vec::new();
2049 for selection in selections.iter() {
2050 let range = selection.point_range(buffer).sorted();
2051 if range.start.row != range.end.row {
2052 new_selections.push(Selection {
2053 id: post_inc(&mut self.next_selection_id),
2054 start: selection.start.clone(),
2055 end: selection.start.clone(),
2056 reversed: false,
2057 goal: SelectionGoal::None,
2058 });
2059 }
2060 for row in range.start.row + 1..range.end.row {
2061 let cursor = buffer.anchor_before(Point::new(row, buffer.line_len(row)));
2062 new_selections.push(Selection {
2063 id: post_inc(&mut self.next_selection_id),
2064 start: cursor.clone(),
2065 end: cursor,
2066 reversed: false,
2067 goal: SelectionGoal::None,
2068 });
2069 }
2070 new_selections.push(Selection {
2071 id: selection.id,
2072 start: selection.end.clone(),
2073 end: selection.end.clone(),
2074 reversed: false,
2075 goal: SelectionGoal::None,
2076 });
2077 to_unfold.push(range);
2078 }
2079 self.unfold_ranges(to_unfold, cx);
2080 self.update_selections(new_selections, true, cx);
2081 }
2082
2083 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
2084 self.add_selection(true, cx);
2085 }
2086
2087 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
2088 self.add_selection(false, cx);
2089 }
2090
2091 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
2092 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2093 let mut selections = self.selections(cx).to_vec();
2094 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
2095 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
2096 let range = oldest_selection.display_range(&display_map).sorted();
2097 let columns = cmp::min(range.start.column(), range.end.column())
2098 ..cmp::max(range.start.column(), range.end.column());
2099
2100 selections.clear();
2101 let mut stack = Vec::new();
2102 for row in range.start.row()..=range.end.row() {
2103 if let Some(selection) = self.build_columnar_selection(
2104 &display_map,
2105 row,
2106 &columns,
2107 oldest_selection.reversed,
2108 ) {
2109 stack.push(selection.id);
2110 selections.push(selection);
2111 }
2112 }
2113
2114 if above {
2115 stack.reverse();
2116 }
2117
2118 AddSelectionsState { above, stack }
2119 });
2120
2121 let last_added_selection = *state.stack.last().unwrap();
2122 let mut new_selections = Vec::new();
2123 if above == state.above {
2124 let end_row = if above {
2125 0
2126 } else {
2127 display_map.max_point().row()
2128 };
2129
2130 'outer: for selection in selections {
2131 if selection.id == last_added_selection {
2132 let range = selection.display_range(&display_map).sorted();
2133 debug_assert_eq!(range.start.row(), range.end.row());
2134 let mut row = range.start.row();
2135 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
2136 {
2137 start..end
2138 } else {
2139 cmp::min(range.start.column(), range.end.column())
2140 ..cmp::max(range.start.column(), range.end.column())
2141 };
2142
2143 while row != end_row {
2144 if above {
2145 row -= 1;
2146 } else {
2147 row += 1;
2148 }
2149
2150 if let Some(new_selection) = self.build_columnar_selection(
2151 &display_map,
2152 row,
2153 &columns,
2154 selection.reversed,
2155 ) {
2156 state.stack.push(new_selection.id);
2157 if above {
2158 new_selections.push(new_selection);
2159 new_selections.push(selection);
2160 } else {
2161 new_selections.push(selection);
2162 new_selections.push(new_selection);
2163 }
2164
2165 continue 'outer;
2166 }
2167 }
2168 }
2169
2170 new_selections.push(selection);
2171 }
2172 } else {
2173 new_selections = selections;
2174 new_selections.retain(|s| s.id != last_added_selection);
2175 state.stack.pop();
2176 }
2177
2178 self.update_selections(new_selections, true, cx);
2179 if state.stack.len() > 1 {
2180 self.add_selections_state = Some(state);
2181 }
2182 }
2183
2184 pub fn select_larger_syntax_node(
2185 &mut self,
2186 _: &SelectLargerSyntaxNode,
2187 cx: &mut ViewContext<Self>,
2188 ) {
2189 let old_selections = self.selections(cx);
2190 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2191 let buffer = self.buffer.read(cx);
2192
2193 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
2194 let mut selected_larger_node = false;
2195 let mut new_selection_ranges = Vec::new();
2196 for selection in old_selections.iter() {
2197 let old_range = selection.start.to_offset(buffer)..selection.end.to_offset(buffer);
2198 let mut new_range = old_range.clone();
2199 while let Some(containing_range) = buffer.range_for_syntax_ancestor(new_range.clone()) {
2200 new_range = containing_range;
2201 if !display_map.intersects_fold(new_range.start)
2202 && !display_map.intersects_fold(new_range.end)
2203 {
2204 break;
2205 }
2206 }
2207
2208 selected_larger_node |= new_range != old_range;
2209 new_selection_ranges.push((selection.id, new_range, selection.reversed));
2210 }
2211
2212 if selected_larger_node {
2213 stack.push(old_selections);
2214 new_selection_ranges.sort_unstable_by_key(|(_, range, _)| range.start.clone());
2215 let new_selections = new_selection_ranges
2216 .into_iter()
2217 .map(|(id, range, reversed)| Selection {
2218 id,
2219 start: buffer.anchor_before(range.start),
2220 end: buffer.anchor_before(range.end),
2221 reversed,
2222 goal: SelectionGoal::None,
2223 })
2224 .collect();
2225 self.update_selections(new_selections, true, cx);
2226 }
2227 self.select_larger_syntax_node_stack = stack;
2228 }
2229
2230 pub fn select_smaller_syntax_node(
2231 &mut self,
2232 _: &SelectSmallerSyntaxNode,
2233 cx: &mut ViewContext<Self>,
2234 ) {
2235 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
2236 if let Some(selections) = stack.pop() {
2237 self.update_selections(selections.to_vec(), true, cx);
2238 }
2239 self.select_larger_syntax_node_stack = stack;
2240 }
2241
2242 pub fn move_to_enclosing_bracket(
2243 &mut self,
2244 _: &MoveToEnclosingBracket,
2245 cx: &mut ViewContext<Self>,
2246 ) {
2247 let mut selections = self.selections(cx).to_vec();
2248 let buffer = self.buffer.read(cx.as_ref());
2249 for selection in &mut selections {
2250 let selection_range = selection.offset_range(buffer);
2251 if let Some((open_range, close_range)) =
2252 buffer.enclosing_bracket_ranges(selection_range.clone())
2253 {
2254 let close_range = close_range.to_inclusive();
2255 let destination = if close_range.contains(&selection_range.start)
2256 && close_range.contains(&selection_range.end)
2257 {
2258 open_range.end
2259 } else {
2260 *close_range.start()
2261 };
2262 selection.start = buffer.anchor_before(destination);
2263 selection.end = selection.start.clone();
2264 }
2265 }
2266
2267 self.update_selections(selections, true, cx);
2268 }
2269
2270 fn build_columnar_selection(
2271 &mut self,
2272 display_map: &DisplayMapSnapshot,
2273 row: u32,
2274 columns: &Range<u32>,
2275 reversed: bool,
2276 ) -> Option<Selection> {
2277 let is_empty = columns.start == columns.end;
2278 let line_len = display_map.line_len(row);
2279 if columns.start < line_len || (is_empty && columns.start == line_len) {
2280 let start = DisplayPoint::new(row, columns.start);
2281 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
2282 Some(Selection {
2283 id: post_inc(&mut self.next_selection_id),
2284 start: display_map.anchor_before(start, Bias::Left),
2285 end: display_map.anchor_before(end, Bias::Left),
2286 reversed,
2287 goal: SelectionGoal::ColumnRange {
2288 start: columns.start,
2289 end: columns.end,
2290 },
2291 })
2292 } else {
2293 None
2294 }
2295 }
2296
2297 pub fn active_selection_sets<'a>(
2298 &'a self,
2299 cx: &'a AppContext,
2300 ) -> impl 'a + Iterator<Item = SelectionSetId> {
2301 let buffer = self.buffer.read(cx);
2302 let replica_id = buffer.replica_id();
2303 buffer
2304 .selection_sets()
2305 .filter(move |(set_id, set)| {
2306 set.active && (set_id.replica_id != replica_id || **set_id == self.selection_set_id)
2307 })
2308 .map(|(set_id, _)| *set_id)
2309 }
2310
2311 pub fn selections_in_range<'a>(
2312 &'a self,
2313 set_id: SelectionSetId,
2314 range: Range<DisplayPoint>,
2315 cx: &'a mut MutableAppContext,
2316 ) -> impl 'a + Iterator<Item = Range<DisplayPoint>> {
2317 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2318 let buffer = self.buffer.read(cx);
2319 let selections = &buffer.selection_set(set_id).unwrap().selections;
2320 let start = display_map.anchor_before(range.start, Bias::Left);
2321 let start_index = self.selection_insertion_index(selections, &start, cx);
2322 let pending_selection = if set_id.replica_id == self.buffer.read(cx).replica_id() {
2323 self.pending_selection.as_ref().and_then(|s| {
2324 let selection_range = s.display_range(&display_map);
2325 if selection_range.start <= range.end || selection_range.end <= range.end {
2326 Some(selection_range)
2327 } else {
2328 None
2329 }
2330 })
2331 } else {
2332 None
2333 };
2334 selections[start_index..]
2335 .iter()
2336 .map(move |s| s.display_range(&display_map))
2337 .take_while(move |r| r.start <= range.end || r.end <= range.end)
2338 .chain(pending_selection)
2339 }
2340
2341 fn selection_insertion_index(
2342 &self,
2343 selections: &[Selection],
2344 start: &Anchor,
2345 cx: &AppContext,
2346 ) -> usize {
2347 let buffer = self.buffer.read(cx);
2348 match selections.binary_search_by(|probe| probe.start.cmp(&start, buffer).unwrap()) {
2349 Ok(index) => index,
2350 Err(index) => {
2351 if index > 0
2352 && selections[index - 1].end.cmp(&start, buffer).unwrap() == Ordering::Greater
2353 {
2354 index - 1
2355 } else {
2356 index
2357 }
2358 }
2359 }
2360 }
2361
2362 fn selections(&mut self, cx: &mut ViewContext<Self>) -> Arc<[Selection]> {
2363 self.end_selection(cx);
2364 let buffer = self.buffer.read(cx);
2365 buffer
2366 .selection_set(self.selection_set_id)
2367 .unwrap()
2368 .selections
2369 .clone()
2370 }
2371
2372 fn update_selections(
2373 &mut self,
2374 mut selections: Vec<Selection>,
2375 autoscroll: bool,
2376 cx: &mut ViewContext<Self>,
2377 ) {
2378 // Merge overlapping selections.
2379 let buffer = self.buffer.read(cx);
2380 let mut i = 1;
2381 while i < selections.len() {
2382 if selections[i - 1]
2383 .end
2384 .cmp(&selections[i].start, buffer)
2385 .unwrap()
2386 >= Ordering::Equal
2387 {
2388 let removed = selections.remove(i);
2389 if removed.start.cmp(&selections[i - 1].start, buffer).unwrap() < Ordering::Equal {
2390 selections[i - 1].start = removed.start;
2391 }
2392 if removed.end.cmp(&selections[i - 1].end, buffer).unwrap() > Ordering::Equal {
2393 selections[i - 1].end = removed.end;
2394 }
2395 } else {
2396 i += 1;
2397 }
2398 }
2399
2400 self.add_selections_state = None;
2401 self.select_larger_syntax_node_stack.clear();
2402 while let Some(autoclose_pair_state) = self.autoclose_stack.last() {
2403 let all_selections_inside_autoclose_ranges =
2404 if selections.len() == autoclose_pair_state.ranges.len() {
2405 selections.iter().zip(&autoclose_pair_state.ranges).all(
2406 |(selection, autoclose_range)| {
2407 let head = selection.head();
2408 autoclose_range.start.cmp(head, buffer).unwrap() <= Ordering::Equal
2409 && autoclose_range.end.cmp(head, buffer).unwrap() >= Ordering::Equal
2410 },
2411 )
2412 } else {
2413 false
2414 };
2415
2416 if all_selections_inside_autoclose_ranges {
2417 break;
2418 } else {
2419 self.autoclose_stack.pop();
2420 }
2421 }
2422
2423 if autoscroll {
2424 self.autoscroll_requested = true;
2425 cx.notify();
2426 }
2427
2428 self.pause_cursor_blinking(cx);
2429
2430 self.buffer.update(cx, |buffer, cx| {
2431 buffer
2432 .update_selection_set(self.selection_set_id, selections, cx)
2433 .unwrap();
2434 });
2435 }
2436
2437 fn start_transaction(&self, cx: &mut ViewContext<Self>) {
2438 self.buffer.update(cx, |buffer, _| {
2439 buffer
2440 .start_transaction(Some(self.selection_set_id))
2441 .unwrap()
2442 });
2443 }
2444
2445 fn end_transaction(&self, cx: &mut ViewContext<Self>) {
2446 self.buffer.update(cx, |buffer, cx| {
2447 buffer
2448 .end_transaction(Some(self.selection_set_id), cx)
2449 .unwrap()
2450 });
2451 }
2452
2453 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
2454 log::info!("Editor::page_up");
2455 }
2456
2457 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
2458 log::info!("Editor::page_down");
2459 }
2460
2461 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
2462 let mut fold_ranges = Vec::new();
2463
2464 let selections = self.selections(cx);
2465 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2466 for selection in selections.iter() {
2467 let range = selection.display_range(&display_map).sorted();
2468 let buffer_start_row = range.start.to_buffer_point(&display_map, Bias::Left).row;
2469
2470 for row in (0..=range.end.row()).rev() {
2471 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
2472 let fold_range = self.foldable_range_for_line(&display_map, row);
2473 if fold_range.end.row >= buffer_start_row {
2474 fold_ranges.push(fold_range);
2475 if row <= range.start.row() {
2476 break;
2477 }
2478 }
2479 }
2480 }
2481 }
2482
2483 self.fold_ranges(fold_ranges, cx);
2484 }
2485
2486 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
2487 let selections = self.selections(cx);
2488 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2489 let buffer = self.buffer.read(cx);
2490 let ranges = selections
2491 .iter()
2492 .map(|s| {
2493 let range = s.display_range(&display_map).sorted();
2494 let mut start = range.start.to_buffer_point(&display_map, Bias::Left);
2495 let mut end = range.end.to_buffer_point(&display_map, Bias::Left);
2496 start.column = 0;
2497 end.column = buffer.line_len(end.row);
2498 start..end
2499 })
2500 .collect::<Vec<_>>();
2501 self.unfold_ranges(ranges, cx);
2502 }
2503
2504 fn is_line_foldable(&self, display_map: &DisplayMapSnapshot, display_row: u32) -> bool {
2505 let max_point = display_map.max_point();
2506 if display_row >= max_point.row() {
2507 false
2508 } else {
2509 let (start_indent, is_blank) = display_map.line_indent(display_row);
2510 if is_blank {
2511 false
2512 } else {
2513 for display_row in display_row + 1..=max_point.row() {
2514 let (indent, is_blank) = display_map.line_indent(display_row);
2515 if !is_blank {
2516 return indent > start_indent;
2517 }
2518 }
2519 false
2520 }
2521 }
2522 }
2523
2524 fn foldable_range_for_line(
2525 &self,
2526 display_map: &DisplayMapSnapshot,
2527 start_row: u32,
2528 ) -> Range<Point> {
2529 let max_point = display_map.max_point();
2530
2531 let (start_indent, _) = display_map.line_indent(start_row);
2532 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
2533 let mut end = None;
2534 for row in start_row + 1..=max_point.row() {
2535 let (indent, is_blank) = display_map.line_indent(row);
2536 if !is_blank && indent <= start_indent {
2537 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
2538 break;
2539 }
2540 }
2541
2542 let end = end.unwrap_or(max_point);
2543 return start.to_buffer_point(display_map, Bias::Left)
2544 ..end.to_buffer_point(display_map, Bias::Left);
2545 }
2546
2547 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
2548 let selections = self.selections(cx);
2549 let buffer = self.buffer.read(cx);
2550 let ranges = selections
2551 .iter()
2552 .map(|s| s.point_range(buffer).sorted())
2553 .collect();
2554 self.fold_ranges(ranges, cx);
2555 }
2556
2557 fn fold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
2558 if !ranges.is_empty() {
2559 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
2560 self.autoscroll_requested = true;
2561 cx.notify();
2562 }
2563 }
2564
2565 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
2566 if !ranges.is_empty() {
2567 self.display_map
2568 .update(cx, |map, cx| map.unfold(ranges, cx));
2569 self.autoscroll_requested = true;
2570 cx.notify();
2571 }
2572 }
2573
2574 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
2575 self.display_map
2576 .update(cx, |map, cx| map.snapshot(cx))
2577 .longest_row()
2578 }
2579
2580 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
2581 self.display_map
2582 .update(cx, |map, cx| map.snapshot(cx))
2583 .max_point()
2584 }
2585
2586 pub fn text(&self, cx: &AppContext) -> String {
2587 self.buffer.read(cx).text()
2588 }
2589
2590 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
2591 self.display_map
2592 .update(cx, |map, cx| map.snapshot(cx))
2593 .text()
2594 }
2595
2596 // pub fn font_size(&self) -> f32 {
2597 // self.settings.font_size
2598 // }
2599
2600 pub fn set_wrap_width(&self, width: f32, cx: &mut MutableAppContext) -> bool {
2601 self.display_map
2602 .update(cx, |map, cx| map.set_wrap_width(Some(width), cx))
2603 }
2604
2605 fn next_blink_epoch(&mut self) -> usize {
2606 self.blink_epoch += 1;
2607 self.blink_epoch
2608 }
2609
2610 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
2611 self.show_local_cursors = true;
2612 cx.notify();
2613
2614 let epoch = self.next_blink_epoch();
2615 cx.spawn(|this, mut cx| {
2616 let this = this.downgrade();
2617 async move {
2618 Timer::after(CURSOR_BLINK_INTERVAL).await;
2619 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
2620 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
2621 }
2622 }
2623 })
2624 .detach();
2625 }
2626
2627 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
2628 if epoch == self.blink_epoch {
2629 self.blinking_paused = false;
2630 self.blink_cursors(epoch, cx);
2631 }
2632 }
2633
2634 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
2635 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
2636 self.show_local_cursors = !self.show_local_cursors;
2637 cx.notify();
2638
2639 let epoch = self.next_blink_epoch();
2640 cx.spawn(|this, mut cx| {
2641 let this = this.downgrade();
2642 async move {
2643 Timer::after(CURSOR_BLINK_INTERVAL).await;
2644 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
2645 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
2646 }
2647 }
2648 })
2649 .detach();
2650 }
2651 }
2652
2653 pub fn show_local_cursors(&self) -> bool {
2654 self.show_local_cursors
2655 }
2656
2657 fn on_buffer_changed(&mut self, _: ModelHandle<Buffer>, cx: &mut ViewContext<Self>) {
2658 cx.notify();
2659 }
2660
2661 fn on_buffer_event(
2662 &mut self,
2663 _: ModelHandle<Buffer>,
2664 event: &language::Event,
2665 cx: &mut ViewContext<Self>,
2666 ) {
2667 match event {
2668 language::Event::Edited => cx.emit(Event::Edited),
2669 language::Event::Dirtied => cx.emit(Event::Dirtied),
2670 language::Event::Saved => cx.emit(Event::Saved),
2671 language::Event::FileHandleChanged => cx.emit(Event::FileHandleChanged),
2672 language::Event::Reloaded => cx.emit(Event::FileHandleChanged),
2673 language::Event::Closed => cx.emit(Event::Closed),
2674 language::Event::Reparsed => {}
2675 }
2676 }
2677
2678 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
2679 cx.notify();
2680 }
2681}
2682
2683impl Snapshot {
2684 pub fn is_empty(&self) -> bool {
2685 self.display_snapshot.is_empty()
2686 }
2687
2688 pub fn is_focused(&self) -> bool {
2689 self.is_focused
2690 }
2691
2692 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
2693 self.placeholder_text.as_ref()
2694 }
2695
2696 pub fn buffer_row_count(&self) -> u32 {
2697 self.display_snapshot.buffer_row_count()
2698 }
2699
2700 pub fn buffer_rows(&self, start_row: u32) -> BufferRows {
2701 self.display_snapshot.buffer_rows(start_row)
2702 }
2703
2704 pub fn highlighted_chunks_for_rows(
2705 &mut self,
2706 display_rows: Range<u32>,
2707 ) -> display_map::HighlightedChunks {
2708 self.display_snapshot
2709 .highlighted_chunks_for_rows(display_rows)
2710 }
2711
2712 pub fn scroll_position(&self) -> Vector2F {
2713 compute_scroll_position(
2714 &self.display_snapshot,
2715 self.scroll_position,
2716 &self.scroll_top_anchor,
2717 )
2718 }
2719
2720 pub fn max_point(&self) -> DisplayPoint {
2721 self.display_snapshot.max_point()
2722 }
2723
2724 pub fn longest_row(&self) -> u32 {
2725 self.display_snapshot.longest_row()
2726 }
2727
2728 pub fn line_len(&self, display_row: u32) -> u32 {
2729 self.display_snapshot.line_len(display_row)
2730 }
2731
2732 pub fn line(&self, display_row: u32) -> String {
2733 self.display_snapshot.line(display_row)
2734 }
2735
2736 pub fn prev_row_boundary(&self, point: DisplayPoint) -> (DisplayPoint, Point) {
2737 self.display_snapshot.prev_row_boundary(point)
2738 }
2739
2740 pub fn next_row_boundary(&self, point: DisplayPoint) -> (DisplayPoint, Point) {
2741 self.display_snapshot.next_row_boundary(point)
2742 }
2743}
2744
2745impl EditorSettings {
2746 #[cfg(any(test, feature = "test-support"))]
2747 pub fn test(cx: &AppContext) -> Self {
2748 Self {
2749 tab_size: 4,
2750 style: {
2751 let font_cache: &gpui::FontCache = cx.font_cache();
2752 let font_family_name = Arc::from("Monaco");
2753 let font_properties = Default::default();
2754 let font_family_id = font_cache.load_family(&[&font_family_name]).unwrap();
2755 let font_id = font_cache
2756 .select_font(font_family_id, &font_properties)
2757 .unwrap();
2758 EditorStyle {
2759 text: TextStyle {
2760 font_family_name,
2761 font_family_id,
2762 font_id,
2763 font_size: 14.,
2764 color: Color::from_u32(0xff0000ff),
2765 font_properties,
2766 underline: false,
2767 },
2768 placeholder_text: None,
2769 background: Default::default(),
2770 gutter_background: Default::default(),
2771 active_line_background: Default::default(),
2772 line_number: Default::default(),
2773 line_number_active: Default::default(),
2774 selection: Default::default(),
2775 guest_selections: Default::default(),
2776 syntax: Default::default(),
2777 }
2778 },
2779 }
2780 }
2781}
2782
2783fn compute_scroll_position(
2784 snapshot: &DisplayMapSnapshot,
2785 mut scroll_position: Vector2F,
2786 scroll_top_anchor: &Anchor,
2787) -> Vector2F {
2788 let scroll_top = scroll_top_anchor
2789 .to_display_point(snapshot, Bias::Left)
2790 .row() as f32;
2791 scroll_position.set_y(scroll_top + scroll_position.y());
2792 scroll_position
2793}
2794
2795pub enum Event {
2796 Activate,
2797 Edited,
2798 Blurred,
2799 Dirtied,
2800 Saved,
2801 FileHandleChanged,
2802 Closed,
2803}
2804
2805impl Entity for Editor {
2806 type Event = Event;
2807
2808 fn release(&mut self, cx: &mut MutableAppContext) {
2809 self.buffer.update(cx, |buffer, cx| {
2810 buffer
2811 .remove_selection_set(self.selection_set_id, cx)
2812 .unwrap();
2813 });
2814 }
2815}
2816
2817impl View for Editor {
2818 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
2819 let settings = self.build_settings.borrow_mut()(cx);
2820 self.display_map.update(cx, |map, cx| {
2821 map.set_font(
2822 settings.style.text.font_id,
2823 settings.style.text.font_size,
2824 cx,
2825 )
2826 });
2827 EditorElement::new(self.handle.clone(), settings).boxed()
2828 }
2829
2830 fn ui_name() -> &'static str {
2831 "Editor"
2832 }
2833
2834 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
2835 self.focused = true;
2836 self.blink_cursors(self.blink_epoch, cx);
2837 self.buffer.update(cx, |buffer, cx| {
2838 buffer
2839 .set_active_selection_set(Some(self.selection_set_id), cx)
2840 .unwrap();
2841 });
2842 }
2843
2844 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
2845 self.focused = false;
2846 self.show_local_cursors = false;
2847 self.buffer.update(cx, |buffer, cx| {
2848 buffer.set_active_selection_set(None, cx).unwrap();
2849 });
2850 cx.emit(Event::Blurred);
2851 cx.notify();
2852 }
2853
2854 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
2855 let mut cx = Self::default_keymap_context();
2856 let mode = match self.mode {
2857 EditorMode::SingleLine => "single_line",
2858 EditorMode::AutoHeight { .. } => "auto_height",
2859 EditorMode::Full => "full",
2860 };
2861 cx.map.insert("mode".into(), mode.into());
2862 cx
2863 }
2864}
2865
2866impl SelectionExt for Selection {
2867 fn display_range(&self, map: &DisplayMapSnapshot) -> Range<DisplayPoint> {
2868 let start = self.start.to_display_point(map, Bias::Left);
2869 let end = self.end.to_display_point(map, Bias::Left);
2870 if self.reversed {
2871 end..start
2872 } else {
2873 start..end
2874 }
2875 }
2876
2877 fn spanned_rows(
2878 &self,
2879 include_end_if_at_line_start: bool,
2880 map: &DisplayMapSnapshot,
2881 ) -> SpannedRows {
2882 let display_start = self.start.to_display_point(map, Bias::Left);
2883 let mut display_end = self.end.to_display_point(map, Bias::Right);
2884 if !include_end_if_at_line_start
2885 && display_end.row() != map.max_point().row()
2886 && display_start.row() != display_end.row()
2887 && display_end.column() == 0
2888 {
2889 *display_end.row_mut() -= 1;
2890 }
2891
2892 let (display_start, buffer_start) = map.prev_row_boundary(display_start);
2893 let (display_end, buffer_end) = map.next_row_boundary(display_end);
2894
2895 SpannedRows {
2896 buffer_rows: buffer_start.row..buffer_end.row + 1,
2897 display_rows: display_start.row()..display_end.row() + 1,
2898 }
2899 }
2900}
2901
2902#[cfg(test)]
2903mod tests {
2904 use super::*;
2905 use crate::test::sample_text;
2906 use buffer::{History, Point};
2907 use unindent::Unindent;
2908
2909 #[gpui::test]
2910 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
2911 let buffer = cx.add_model(|cx| Buffer::new(0, "aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx));
2912 let settings = EditorSettings::test(cx);
2913 let (_, editor) =
2914 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
2915
2916 editor.update(cx, |view, cx| {
2917 view.begin_selection(DisplayPoint::new(2, 2), false, cx);
2918 });
2919
2920 assert_eq!(
2921 editor.update(cx, |view, cx| view.selection_ranges(cx)),
2922 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
2923 );
2924
2925 editor.update(cx, |view, cx| {
2926 view.update_selection(DisplayPoint::new(3, 3), Vector2F::zero(), cx);
2927 });
2928
2929 assert_eq!(
2930 editor.update(cx, |view, cx| view.selection_ranges(cx)),
2931 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
2932 );
2933
2934 editor.update(cx, |view, cx| {
2935 view.update_selection(DisplayPoint::new(1, 1), Vector2F::zero(), cx);
2936 });
2937
2938 assert_eq!(
2939 editor.update(cx, |view, cx| view.selection_ranges(cx)),
2940 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
2941 );
2942
2943 editor.update(cx, |view, cx| {
2944 view.end_selection(cx);
2945 view.update_selection(DisplayPoint::new(3, 3), Vector2F::zero(), cx);
2946 });
2947
2948 assert_eq!(
2949 editor.update(cx, |view, cx| view.selection_ranges(cx)),
2950 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
2951 );
2952
2953 editor.update(cx, |view, cx| {
2954 view.begin_selection(DisplayPoint::new(3, 3), true, cx);
2955 view.update_selection(DisplayPoint::new(0, 0), Vector2F::zero(), cx);
2956 });
2957
2958 assert_eq!(
2959 editor.update(cx, |view, cx| view.selection_ranges(cx)),
2960 [
2961 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
2962 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
2963 ]
2964 );
2965
2966 editor.update(cx, |view, cx| {
2967 view.end_selection(cx);
2968 });
2969
2970 assert_eq!(
2971 editor.update(cx, |view, cx| view.selection_ranges(cx)),
2972 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
2973 );
2974 }
2975
2976 #[gpui::test]
2977 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
2978 let buffer = cx.add_model(|cx| Buffer::new(0, "aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx));
2979 let settings = EditorSettings::test(cx);
2980 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
2981
2982 view.update(cx, |view, cx| {
2983 view.begin_selection(DisplayPoint::new(2, 2), false, cx);
2984 assert_eq!(
2985 view.selection_ranges(cx),
2986 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
2987 );
2988 });
2989
2990 view.update(cx, |view, cx| {
2991 view.update_selection(DisplayPoint::new(3, 3), Vector2F::zero(), cx);
2992 assert_eq!(
2993 view.selection_ranges(cx),
2994 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
2995 );
2996 });
2997
2998 view.update(cx, |view, cx| {
2999 view.cancel(&Cancel, cx);
3000 view.update_selection(DisplayPoint::new(1, 1), Vector2F::zero(), cx);
3001 assert_eq!(
3002 view.selection_ranges(cx),
3003 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
3004 );
3005 });
3006 }
3007
3008 #[gpui::test]
3009 fn test_cancel(cx: &mut gpui::MutableAppContext) {
3010 let buffer = cx.add_model(|cx| Buffer::new(0, "aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx));
3011 let settings = EditorSettings::test(cx);
3012 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3013
3014 view.update(cx, |view, cx| {
3015 view.begin_selection(DisplayPoint::new(3, 4), false, cx);
3016 view.update_selection(DisplayPoint::new(1, 1), Vector2F::zero(), cx);
3017 view.end_selection(cx);
3018
3019 view.begin_selection(DisplayPoint::new(0, 1), true, cx);
3020 view.update_selection(DisplayPoint::new(0, 3), Vector2F::zero(), cx);
3021 view.end_selection(cx);
3022 assert_eq!(
3023 view.selection_ranges(cx),
3024 [
3025 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
3026 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
3027 ]
3028 );
3029 });
3030
3031 view.update(cx, |view, cx| {
3032 view.cancel(&Cancel, cx);
3033 assert_eq!(
3034 view.selection_ranges(cx),
3035 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
3036 );
3037 });
3038
3039 view.update(cx, |view, cx| {
3040 view.cancel(&Cancel, cx);
3041 assert_eq!(
3042 view.selection_ranges(cx),
3043 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
3044 );
3045 });
3046 }
3047
3048 #[gpui::test]
3049 fn test_fold(cx: &mut gpui::MutableAppContext) {
3050 let buffer = cx.add_model(|cx| {
3051 Buffer::new(
3052 0,
3053 "
3054 impl Foo {
3055 // Hello!
3056
3057 fn a() {
3058 1
3059 }
3060
3061 fn b() {
3062 2
3063 }
3064
3065 fn c() {
3066 3
3067 }
3068 }
3069 "
3070 .unindent(),
3071 cx,
3072 )
3073 });
3074 let settings = EditorSettings::test(&cx);
3075 let (_, view) = cx.add_window(Default::default(), |cx| {
3076 build_editor(buffer.clone(), settings, cx)
3077 });
3078
3079 view.update(cx, |view, cx| {
3080 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx)
3081 .unwrap();
3082 view.fold(&Fold, cx);
3083 assert_eq!(
3084 view.display_text(cx),
3085 "
3086 impl Foo {
3087 // Hello!
3088
3089 fn a() {
3090 1
3091 }
3092
3093 fn b() {…
3094 }
3095
3096 fn c() {…
3097 }
3098 }
3099 "
3100 .unindent(),
3101 );
3102
3103 view.fold(&Fold, cx);
3104 assert_eq!(
3105 view.display_text(cx),
3106 "
3107 impl Foo {…
3108 }
3109 "
3110 .unindent(),
3111 );
3112
3113 view.unfold(&Unfold, cx);
3114 assert_eq!(
3115 view.display_text(cx),
3116 "
3117 impl Foo {
3118 // Hello!
3119
3120 fn a() {
3121 1
3122 }
3123
3124 fn b() {…
3125 }
3126
3127 fn c() {…
3128 }
3129 }
3130 "
3131 .unindent(),
3132 );
3133
3134 view.unfold(&Unfold, cx);
3135 assert_eq!(view.display_text(cx), buffer.read(cx).text());
3136 });
3137 }
3138
3139 #[gpui::test]
3140 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
3141 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(6, 6), cx));
3142 let settings = EditorSettings::test(&cx);
3143 let (_, view) = cx.add_window(Default::default(), |cx| {
3144 build_editor(buffer.clone(), settings, cx)
3145 });
3146
3147 buffer.update(cx, |buffer, cx| {
3148 buffer.edit(
3149 vec![
3150 Point::new(1, 0)..Point::new(1, 0),
3151 Point::new(1, 1)..Point::new(1, 1),
3152 ],
3153 "\t",
3154 cx,
3155 );
3156 });
3157
3158 view.update(cx, |view, cx| {
3159 assert_eq!(
3160 view.selection_ranges(cx),
3161 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
3162 );
3163
3164 view.move_down(&MoveDown, cx);
3165 assert_eq!(
3166 view.selection_ranges(cx),
3167 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
3168 );
3169
3170 view.move_right(&MoveRight, cx);
3171 assert_eq!(
3172 view.selection_ranges(cx),
3173 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
3174 );
3175
3176 view.move_left(&MoveLeft, cx);
3177 assert_eq!(
3178 view.selection_ranges(cx),
3179 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
3180 );
3181
3182 view.move_up(&MoveUp, cx);
3183 assert_eq!(
3184 view.selection_ranges(cx),
3185 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
3186 );
3187
3188 view.move_to_end(&MoveToEnd, cx);
3189 assert_eq!(
3190 view.selection_ranges(cx),
3191 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
3192 );
3193
3194 view.move_to_beginning(&MoveToBeginning, cx);
3195 assert_eq!(
3196 view.selection_ranges(cx),
3197 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
3198 );
3199
3200 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx)
3201 .unwrap();
3202 view.select_to_beginning(&SelectToBeginning, cx);
3203 assert_eq!(
3204 view.selection_ranges(cx),
3205 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
3206 );
3207
3208 view.select_to_end(&SelectToEnd, cx);
3209 assert_eq!(
3210 view.selection_ranges(cx),
3211 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
3212 );
3213 });
3214 }
3215
3216 #[gpui::test]
3217 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
3218 let buffer = cx.add_model(|cx| Buffer::new(0, "ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx));
3219 let settings = EditorSettings::test(&cx);
3220 let (_, view) = cx.add_window(Default::default(), |cx| {
3221 build_editor(buffer.clone(), settings, cx)
3222 });
3223
3224 assert_eq!('ⓐ'.len_utf8(), 3);
3225 assert_eq!('α'.len_utf8(), 2);
3226
3227 view.update(cx, |view, cx| {
3228 view.fold_ranges(
3229 vec![
3230 Point::new(0, 6)..Point::new(0, 12),
3231 Point::new(1, 2)..Point::new(1, 4),
3232 Point::new(2, 4)..Point::new(2, 8),
3233 ],
3234 cx,
3235 );
3236 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
3237
3238 view.move_right(&MoveRight, cx);
3239 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐ".len())]);
3240 view.move_right(&MoveRight, cx);
3241 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ".len())]);
3242 view.move_right(&MoveRight, cx);
3243 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ…".len())]);
3244
3245 view.move_down(&MoveDown, cx);
3246 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "ab…".len())]);
3247 view.move_left(&MoveLeft, cx);
3248 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "ab".len())]);
3249 view.move_left(&MoveLeft, cx);
3250 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "a".len())]);
3251
3252 view.move_down(&MoveDown, cx);
3253 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "α".len())]);
3254 view.move_right(&MoveRight, cx);
3255 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβ".len())]);
3256 view.move_right(&MoveRight, cx);
3257 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβ…".len())]);
3258 view.move_right(&MoveRight, cx);
3259 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβ…ε".len())]);
3260
3261 view.move_up(&MoveUp, cx);
3262 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "ab…e".len())]);
3263 view.move_up(&MoveUp, cx);
3264 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ…ⓔ".len())]);
3265 view.move_left(&MoveLeft, cx);
3266 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ…".len())]);
3267 view.move_left(&MoveLeft, cx);
3268 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ".len())]);
3269 view.move_left(&MoveLeft, cx);
3270 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐ".len())]);
3271 });
3272 }
3273
3274 #[gpui::test]
3275 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
3276 let buffer = cx.add_model(|cx| Buffer::new(0, "ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx));
3277 let settings = EditorSettings::test(&cx);
3278 let (_, view) = cx.add_window(Default::default(), |cx| {
3279 build_editor(buffer.clone(), settings, cx)
3280 });
3281 view.update(cx, |view, cx| {
3282 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx)
3283 .unwrap();
3284
3285 view.move_down(&MoveDown, cx);
3286 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "abcd".len())]);
3287
3288 view.move_down(&MoveDown, cx);
3289 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβγ".len())]);
3290
3291 view.move_down(&MoveDown, cx);
3292 assert_eq!(view.selection_ranges(cx), &[empty_range(3, "abcd".len())]);
3293
3294 view.move_down(&MoveDown, cx);
3295 assert_eq!(view.selection_ranges(cx), &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]);
3296
3297 view.move_up(&MoveUp, cx);
3298 assert_eq!(view.selection_ranges(cx), &[empty_range(3, "abcd".len())]);
3299
3300 view.move_up(&MoveUp, cx);
3301 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβγ".len())]);
3302 });
3303 }
3304
3305 #[gpui::test]
3306 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
3307 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\n def", cx));
3308 let settings = EditorSettings::test(&cx);
3309 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3310 view.update(cx, |view, cx| {
3311 view.select_display_ranges(
3312 &[
3313 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
3314 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
3315 ],
3316 cx,
3317 )
3318 .unwrap();
3319 });
3320
3321 view.update(cx, |view, cx| {
3322 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
3323 assert_eq!(
3324 view.selection_ranges(cx),
3325 &[
3326 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
3327 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
3328 ]
3329 );
3330 });
3331
3332 view.update(cx, |view, cx| {
3333 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
3334 assert_eq!(
3335 view.selection_ranges(cx),
3336 &[
3337 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
3338 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
3339 ]
3340 );
3341 });
3342
3343 view.update(cx, |view, cx| {
3344 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
3345 assert_eq!(
3346 view.selection_ranges(cx),
3347 &[
3348 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
3349 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
3350 ]
3351 );
3352 });
3353
3354 view.update(cx, |view, cx| {
3355 view.move_to_end_of_line(&MoveToEndOfLine, cx);
3356 assert_eq!(
3357 view.selection_ranges(cx),
3358 &[
3359 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
3360 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
3361 ]
3362 );
3363 });
3364
3365 // Moving to the end of line again is a no-op.
3366 view.update(cx, |view, cx| {
3367 view.move_to_end_of_line(&MoveToEndOfLine, cx);
3368 assert_eq!(
3369 view.selection_ranges(cx),
3370 &[
3371 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
3372 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
3373 ]
3374 );
3375 });
3376
3377 view.update(cx, |view, cx| {
3378 view.move_left(&MoveLeft, cx);
3379 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
3380 assert_eq!(
3381 view.selection_ranges(cx),
3382 &[
3383 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
3384 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
3385 ]
3386 );
3387 });
3388
3389 view.update(cx, |view, cx| {
3390 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
3391 assert_eq!(
3392 view.selection_ranges(cx),
3393 &[
3394 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
3395 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
3396 ]
3397 );
3398 });
3399
3400 view.update(cx, |view, cx| {
3401 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
3402 assert_eq!(
3403 view.selection_ranges(cx),
3404 &[
3405 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
3406 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
3407 ]
3408 );
3409 });
3410
3411 view.update(cx, |view, cx| {
3412 view.select_to_end_of_line(&SelectToEndOfLine, cx);
3413 assert_eq!(
3414 view.selection_ranges(cx),
3415 &[
3416 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
3417 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
3418 ]
3419 );
3420 });
3421
3422 view.update(cx, |view, cx| {
3423 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
3424 assert_eq!(view.display_text(cx), "ab\n de");
3425 assert_eq!(
3426 view.selection_ranges(cx),
3427 &[
3428 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
3429 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
3430 ]
3431 );
3432 });
3433
3434 view.update(cx, |view, cx| {
3435 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
3436 assert_eq!(view.display_text(cx), "\n");
3437 assert_eq!(
3438 view.selection_ranges(cx),
3439 &[
3440 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
3441 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
3442 ]
3443 );
3444 });
3445 }
3446
3447 #[gpui::test]
3448 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
3449 let buffer =
3450 cx.add_model(|cx| Buffer::new(0, "use std::str::{foo, bar}\n\n {baz.qux()}", cx));
3451 let settings = EditorSettings::test(&cx);
3452 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3453 view.update(cx, |view, cx| {
3454 view.select_display_ranges(
3455 &[
3456 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
3457 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
3458 ],
3459 cx,
3460 )
3461 .unwrap();
3462 });
3463
3464 view.update(cx, |view, cx| {
3465 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
3466 assert_eq!(
3467 view.selection_ranges(cx),
3468 &[
3469 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
3470 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
3471 ]
3472 );
3473 });
3474
3475 view.update(cx, |view, cx| {
3476 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
3477 assert_eq!(
3478 view.selection_ranges(cx),
3479 &[
3480 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
3481 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2),
3482 ]
3483 );
3484 });
3485
3486 view.update(cx, |view, cx| {
3487 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
3488 assert_eq!(
3489 view.selection_ranges(cx),
3490 &[
3491 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
3492 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
3493 ]
3494 );
3495 });
3496
3497 view.update(cx, |view, cx| {
3498 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
3499 assert_eq!(
3500 view.selection_ranges(cx),
3501 &[
3502 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
3503 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
3504 ]
3505 );
3506 });
3507
3508 view.update(cx, |view, cx| {
3509 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
3510 assert_eq!(
3511 view.selection_ranges(cx),
3512 &[
3513 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
3514 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 23),
3515 ]
3516 );
3517 });
3518
3519 view.update(cx, |view, cx| {
3520 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
3521 assert_eq!(
3522 view.selection_ranges(cx),
3523 &[
3524 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
3525 DisplayPoint::new(0, 24)..DisplayPoint::new(0, 24),
3526 ]
3527 );
3528 });
3529
3530 view.update(cx, |view, cx| {
3531 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
3532 assert_eq!(
3533 view.selection_ranges(cx),
3534 &[
3535 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
3536 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
3537 ]
3538 );
3539 });
3540
3541 view.update(cx, |view, cx| {
3542 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
3543 assert_eq!(
3544 view.selection_ranges(cx),
3545 &[
3546 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
3547 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
3548 ]
3549 );
3550 });
3551
3552 view.update(cx, |view, cx| {
3553 view.move_right(&MoveRight, cx);
3554 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
3555 assert_eq!(
3556 view.selection_ranges(cx),
3557 &[
3558 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
3559 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
3560 ]
3561 );
3562 });
3563
3564 view.update(cx, |view, cx| {
3565 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
3566 assert_eq!(
3567 view.selection_ranges(cx),
3568 &[
3569 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 7),
3570 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 2),
3571 ]
3572 );
3573 });
3574
3575 view.update(cx, |view, cx| {
3576 view.select_to_next_word_boundary(&SelectToNextWordBoundary, cx);
3577 assert_eq!(
3578 view.selection_ranges(cx),
3579 &[
3580 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
3581 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
3582 ]
3583 );
3584 });
3585 }
3586
3587 #[gpui::test]
3588 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
3589 let buffer =
3590 cx.add_model(|cx| Buffer::new(0, "use one::{\n two::three::four::five\n};", cx));
3591 let settings = EditorSettings::test(&cx);
3592 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3593
3594 view.update(cx, |view, cx| {
3595 view.set_wrap_width(140., cx);
3596 assert_eq!(
3597 view.display_text(cx),
3598 "use one::{\n two::three::\n four::five\n};"
3599 );
3600
3601 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx)
3602 .unwrap();
3603
3604 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
3605 assert_eq!(
3606 view.selection_ranges(cx),
3607 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
3608 );
3609
3610 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
3611 assert_eq!(
3612 view.selection_ranges(cx),
3613 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
3614 );
3615
3616 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
3617 assert_eq!(
3618 view.selection_ranges(cx),
3619 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
3620 );
3621
3622 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
3623 assert_eq!(
3624 view.selection_ranges(cx),
3625 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
3626 );
3627
3628 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
3629 assert_eq!(
3630 view.selection_ranges(cx),
3631 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
3632 );
3633
3634 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
3635 assert_eq!(
3636 view.selection_ranges(cx),
3637 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
3638 );
3639 });
3640 }
3641
3642 #[gpui::test]
3643 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
3644 let buffer = cx.add_model(|cx| Buffer::new(0, "one two three four", cx));
3645 let settings = EditorSettings::test(&cx);
3646 let (_, view) = cx.add_window(Default::default(), |cx| {
3647 build_editor(buffer.clone(), settings, cx)
3648 });
3649
3650 view.update(cx, |view, cx| {
3651 view.select_display_ranges(
3652 &[
3653 // an empty selection - the preceding word fragment is deleted
3654 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
3655 // characters selected - they are deleted
3656 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
3657 ],
3658 cx,
3659 )
3660 .unwrap();
3661 view.delete_to_previous_word_boundary(&DeleteToPreviousWordBoundary, cx);
3662 });
3663
3664 assert_eq!(buffer.read(cx).text(), "e two te four");
3665
3666 view.update(cx, |view, cx| {
3667 view.select_display_ranges(
3668 &[
3669 // an empty selection - the following word fragment is deleted
3670 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
3671 // characters selected - they are deleted
3672 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
3673 ],
3674 cx,
3675 )
3676 .unwrap();
3677 view.delete_to_next_word_boundary(&DeleteToNextWordBoundary, cx);
3678 });
3679
3680 assert_eq!(buffer.read(cx).text(), "e t te our");
3681 }
3682
3683 #[gpui::test]
3684 fn test_newline(cx: &mut gpui::MutableAppContext) {
3685 let buffer = cx.add_model(|cx| Buffer::new(0, "aaaa\n bbbb\n", cx));
3686 let settings = EditorSettings::test(&cx);
3687 let (_, view) = cx.add_window(Default::default(), |cx| {
3688 build_editor(buffer.clone(), settings, cx)
3689 });
3690
3691 view.update(cx, |view, cx| {
3692 view.select_display_ranges(
3693 &[
3694 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
3695 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
3696 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
3697 ],
3698 cx,
3699 )
3700 .unwrap();
3701
3702 view.newline(&Newline, cx);
3703 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
3704 });
3705 }
3706
3707 #[gpui::test]
3708 fn test_backspace(cx: &mut gpui::MutableAppContext) {
3709 let buffer = cx.add_model(|cx| {
3710 Buffer::new(
3711 0,
3712 "one two three\nfour five six\nseven eight nine\nten\n",
3713 cx,
3714 )
3715 });
3716 let settings = EditorSettings::test(&cx);
3717 let (_, view) = cx.add_window(Default::default(), |cx| {
3718 build_editor(buffer.clone(), settings, cx)
3719 });
3720
3721 view.update(cx, |view, cx| {
3722 view.select_display_ranges(
3723 &[
3724 // an empty selection - the preceding character is deleted
3725 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
3726 // one character selected - it is deleted
3727 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
3728 // a line suffix selected - it is deleted
3729 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
3730 ],
3731 cx,
3732 )
3733 .unwrap();
3734 view.backspace(&Backspace, cx);
3735 });
3736
3737 assert_eq!(
3738 buffer.read(cx).text(),
3739 "oe two three\nfou five six\nseven ten\n"
3740 );
3741 }
3742
3743 #[gpui::test]
3744 fn test_delete(cx: &mut gpui::MutableAppContext) {
3745 let buffer = cx.add_model(|cx| {
3746 Buffer::new(
3747 0,
3748 "one two three\nfour five six\nseven eight nine\nten\n",
3749 cx,
3750 )
3751 });
3752 let settings = EditorSettings::test(&cx);
3753 let (_, view) = cx.add_window(Default::default(), |cx| {
3754 build_editor(buffer.clone(), settings, cx)
3755 });
3756
3757 view.update(cx, |view, cx| {
3758 view.select_display_ranges(
3759 &[
3760 // an empty selection - the following character is deleted
3761 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
3762 // one character selected - it is deleted
3763 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
3764 // a line suffix selected - it is deleted
3765 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
3766 ],
3767 cx,
3768 )
3769 .unwrap();
3770 view.delete(&Delete, cx);
3771 });
3772
3773 assert_eq!(
3774 buffer.read(cx).text(),
3775 "on two three\nfou five six\nseven ten\n"
3776 );
3777 }
3778
3779 #[gpui::test]
3780 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
3781 let settings = EditorSettings::test(&cx);
3782 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\ndef\nghi\n", cx));
3783 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3784 view.update(cx, |view, cx| {
3785 view.select_display_ranges(
3786 &[
3787 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
3788 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
3789 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
3790 ],
3791 cx,
3792 )
3793 .unwrap();
3794 view.delete_line(&DeleteLine, cx);
3795 assert_eq!(view.display_text(cx), "ghi");
3796 assert_eq!(
3797 view.selection_ranges(cx),
3798 vec![
3799 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
3800 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
3801 ]
3802 );
3803 });
3804
3805 let settings = EditorSettings::test(&cx);
3806 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\ndef\nghi\n", cx));
3807 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3808 view.update(cx, |view, cx| {
3809 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx)
3810 .unwrap();
3811 view.delete_line(&DeleteLine, cx);
3812 assert_eq!(view.display_text(cx), "ghi\n");
3813 assert_eq!(
3814 view.selection_ranges(cx),
3815 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
3816 );
3817 });
3818 }
3819
3820 #[gpui::test]
3821 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
3822 let settings = EditorSettings::test(&cx);
3823 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\ndef\nghi\n", cx));
3824 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3825 view.update(cx, |view, cx| {
3826 view.select_display_ranges(
3827 &[
3828 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
3829 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
3830 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
3831 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
3832 ],
3833 cx,
3834 )
3835 .unwrap();
3836 view.duplicate_line(&DuplicateLine, cx);
3837 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
3838 assert_eq!(
3839 view.selection_ranges(cx),
3840 vec![
3841 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
3842 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
3843 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
3844 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
3845 ]
3846 );
3847 });
3848
3849 let settings = EditorSettings::test(&cx);
3850 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\ndef\nghi\n", cx));
3851 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3852 view.update(cx, |view, cx| {
3853 view.select_display_ranges(
3854 &[
3855 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
3856 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
3857 ],
3858 cx,
3859 )
3860 .unwrap();
3861 view.duplicate_line(&DuplicateLine, cx);
3862 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
3863 assert_eq!(
3864 view.selection_ranges(cx),
3865 vec![
3866 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
3867 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
3868 ]
3869 );
3870 });
3871 }
3872
3873 #[gpui::test]
3874 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
3875 let settings = EditorSettings::test(&cx);
3876 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(10, 5), cx));
3877 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3878 view.update(cx, |view, cx| {
3879 view.fold_ranges(
3880 vec![
3881 Point::new(0, 2)..Point::new(1, 2),
3882 Point::new(2, 3)..Point::new(4, 1),
3883 Point::new(7, 0)..Point::new(8, 4),
3884 ],
3885 cx,
3886 );
3887 view.select_display_ranges(
3888 &[
3889 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
3890 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
3891 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
3892 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
3893 ],
3894 cx,
3895 )
3896 .unwrap();
3897 assert_eq!(
3898 view.display_text(cx),
3899 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
3900 );
3901
3902 view.move_line_up(&MoveLineUp, cx);
3903 assert_eq!(
3904 view.display_text(cx),
3905 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
3906 );
3907 assert_eq!(
3908 view.selection_ranges(cx),
3909 vec![
3910 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
3911 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
3912 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
3913 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
3914 ]
3915 );
3916 });
3917
3918 view.update(cx, |view, cx| {
3919 view.move_line_down(&MoveLineDown, cx);
3920 assert_eq!(
3921 view.display_text(cx),
3922 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
3923 );
3924 assert_eq!(
3925 view.selection_ranges(cx),
3926 vec![
3927 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
3928 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
3929 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
3930 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
3931 ]
3932 );
3933 });
3934
3935 view.update(cx, |view, cx| {
3936 view.move_line_down(&MoveLineDown, cx);
3937 assert_eq!(
3938 view.display_text(cx),
3939 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
3940 );
3941 assert_eq!(
3942 view.selection_ranges(cx),
3943 vec![
3944 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
3945 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
3946 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
3947 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
3948 ]
3949 );
3950 });
3951
3952 view.update(cx, |view, cx| {
3953 view.move_line_up(&MoveLineUp, cx);
3954 assert_eq!(
3955 view.display_text(cx),
3956 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
3957 );
3958 assert_eq!(
3959 view.selection_ranges(cx),
3960 vec![
3961 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
3962 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
3963 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
3964 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
3965 ]
3966 );
3967 });
3968 }
3969
3970 #[gpui::test]
3971 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
3972 let buffer = cx.add_model(|cx| Buffer::new(0, "one✅ two three four five six ", cx));
3973 let settings = EditorSettings::test(&cx);
3974 let view = cx
3975 .add_window(Default::default(), |cx| {
3976 build_editor(buffer.clone(), settings, cx)
3977 })
3978 .1;
3979
3980 // Cut with three selections. Clipboard text is divided into three slices.
3981 view.update(cx, |view, cx| {
3982 view.select_ranges(vec![0..7, 11..17, 22..27], false, cx);
3983 view.cut(&Cut, cx);
3984 assert_eq!(view.display_text(cx), "two four six ");
3985 });
3986
3987 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
3988 view.update(cx, |view, cx| {
3989 view.select_ranges(vec![4..4, 9..9, 13..13], false, cx);
3990 view.paste(&Paste, cx);
3991 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
3992 assert_eq!(
3993 view.selection_ranges(cx),
3994 &[
3995 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
3996 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
3997 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
3998 ]
3999 );
4000 });
4001
4002 // Paste again but with only two cursors. Since the number of cursors doesn't
4003 // match the number of slices in the clipboard, the entire clipboard text
4004 // is pasted at each cursor.
4005 view.update(cx, |view, cx| {
4006 view.select_ranges(vec![0..0, 31..31], false, cx);
4007 view.handle_input(&Input("( ".into()), cx);
4008 view.paste(&Paste, cx);
4009 view.handle_input(&Input(") ".into()), cx);
4010 assert_eq!(
4011 view.display_text(cx),
4012 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
4013 );
4014 });
4015
4016 view.update(cx, |view, cx| {
4017 view.select_ranges(vec![0..0], false, cx);
4018 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
4019 assert_eq!(
4020 view.display_text(cx),
4021 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
4022 );
4023 });
4024
4025 // Cut with three selections, one of which is full-line.
4026 view.update(cx, |view, cx| {
4027 view.select_display_ranges(
4028 &[
4029 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
4030 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
4031 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
4032 ],
4033 cx,
4034 )
4035 .unwrap();
4036 view.cut(&Cut, cx);
4037 assert_eq!(
4038 view.display_text(cx),
4039 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
4040 );
4041 });
4042
4043 // Paste with three selections, noticing how the copied selection that was full-line
4044 // gets inserted before the second cursor.
4045 view.update(cx, |view, cx| {
4046 view.select_display_ranges(
4047 &[
4048 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4049 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
4050 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
4051 ],
4052 cx,
4053 )
4054 .unwrap();
4055 view.paste(&Paste, cx);
4056 assert_eq!(
4057 view.display_text(cx),
4058 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
4059 );
4060 assert_eq!(
4061 view.selection_ranges(cx),
4062 &[
4063 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4064 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4065 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
4066 ]
4067 );
4068 });
4069
4070 // Copy with a single cursor only, which writes the whole line into the clipboard.
4071 view.update(cx, |view, cx| {
4072 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx)
4073 .unwrap();
4074 view.copy(&Copy, cx);
4075 });
4076
4077 // Paste with three selections, noticing how the copied full-line selection is inserted
4078 // before the empty selections but replaces the selection that is non-empty.
4079 view.update(cx, |view, cx| {
4080 view.select_display_ranges(
4081 &[
4082 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4083 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
4084 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4085 ],
4086 cx,
4087 )
4088 .unwrap();
4089 view.paste(&Paste, cx);
4090 assert_eq!(
4091 view.display_text(cx),
4092 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
4093 );
4094 assert_eq!(
4095 view.selection_ranges(cx),
4096 &[
4097 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
4098 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
4099 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
4100 ]
4101 );
4102 });
4103 }
4104
4105 #[gpui::test]
4106 fn test_select_all(cx: &mut gpui::MutableAppContext) {
4107 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\nde\nfgh", cx));
4108 let settings = EditorSettings::test(&cx);
4109 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4110 view.update(cx, |view, cx| {
4111 view.select_all(&SelectAll, cx);
4112 assert_eq!(
4113 view.selection_ranges(cx),
4114 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
4115 );
4116 });
4117 }
4118
4119 #[gpui::test]
4120 fn test_select_line(cx: &mut gpui::MutableAppContext) {
4121 let settings = EditorSettings::test(&cx);
4122 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(6, 5), cx));
4123 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4124 view.update(cx, |view, cx| {
4125 view.select_display_ranges(
4126 &[
4127 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
4128 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4129 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4130 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
4131 ],
4132 cx,
4133 )
4134 .unwrap();
4135 view.select_line(&SelectLine, cx);
4136 assert_eq!(
4137 view.selection_ranges(cx),
4138 vec![
4139 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
4140 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
4141 ]
4142 );
4143 });
4144
4145 view.update(cx, |view, cx| {
4146 view.select_line(&SelectLine, cx);
4147 assert_eq!(
4148 view.selection_ranges(cx),
4149 vec![
4150 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
4151 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
4152 ]
4153 );
4154 });
4155
4156 view.update(cx, |view, cx| {
4157 view.select_line(&SelectLine, cx);
4158 assert_eq!(
4159 view.selection_ranges(cx),
4160 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
4161 );
4162 });
4163 }
4164
4165 #[gpui::test]
4166 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
4167 let settings = EditorSettings::test(&cx);
4168 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(9, 5), cx));
4169 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4170 view.update(cx, |view, cx| {
4171 view.fold_ranges(
4172 vec![
4173 Point::new(0, 2)..Point::new(1, 2),
4174 Point::new(2, 3)..Point::new(4, 1),
4175 Point::new(7, 0)..Point::new(8, 4),
4176 ],
4177 cx,
4178 );
4179 view.select_display_ranges(
4180 &[
4181 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
4182 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4183 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4184 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
4185 ],
4186 cx,
4187 )
4188 .unwrap();
4189 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
4190 });
4191
4192 view.update(cx, |view, cx| {
4193 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
4194 assert_eq!(
4195 view.display_text(cx),
4196 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
4197 );
4198 assert_eq!(
4199 view.selection_ranges(cx),
4200 [
4201 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4202 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4203 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
4204 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
4205 ]
4206 );
4207 });
4208
4209 view.update(cx, |view, cx| {
4210 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx)
4211 .unwrap();
4212 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
4213 assert_eq!(
4214 view.display_text(cx),
4215 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
4216 );
4217 assert_eq!(
4218 view.selection_ranges(cx),
4219 [
4220 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4221 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
4222 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
4223 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
4224 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
4225 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
4226 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
4227 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
4228 ]
4229 );
4230 });
4231 }
4232
4233 #[gpui::test]
4234 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
4235 let settings = EditorSettings::test(&cx);
4236 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\ndefghi\n\njk\nlmno\n", cx));
4237 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4238
4239 view.update(cx, |view, cx| {
4240 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx)
4241 .unwrap();
4242 });
4243 view.update(cx, |view, cx| {
4244 view.add_selection_above(&AddSelectionAbove, cx);
4245 assert_eq!(
4246 view.selection_ranges(cx),
4247 vec![
4248 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4249 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
4250 ]
4251 );
4252 });
4253
4254 view.update(cx, |view, cx| {
4255 view.add_selection_above(&AddSelectionAbove, cx);
4256 assert_eq!(
4257 view.selection_ranges(cx),
4258 vec![
4259 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4260 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
4261 ]
4262 );
4263 });
4264
4265 view.update(cx, |view, cx| {
4266 view.add_selection_below(&AddSelectionBelow, cx);
4267 assert_eq!(
4268 view.selection_ranges(cx),
4269 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
4270 );
4271 });
4272
4273 view.update(cx, |view, cx| {
4274 view.add_selection_below(&AddSelectionBelow, cx);
4275 assert_eq!(
4276 view.selection_ranges(cx),
4277 vec![
4278 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
4279 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
4280 ]
4281 );
4282 });
4283
4284 view.update(cx, |view, cx| {
4285 view.add_selection_below(&AddSelectionBelow, cx);
4286 assert_eq!(
4287 view.selection_ranges(cx),
4288 vec![
4289 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
4290 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
4291 ]
4292 );
4293 });
4294
4295 view.update(cx, |view, cx| {
4296 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx)
4297 .unwrap();
4298 });
4299 view.update(cx, |view, cx| {
4300 view.add_selection_below(&AddSelectionBelow, cx);
4301 assert_eq!(
4302 view.selection_ranges(cx),
4303 vec![
4304 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
4305 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
4306 ]
4307 );
4308 });
4309
4310 view.update(cx, |view, cx| {
4311 view.add_selection_below(&AddSelectionBelow, cx);
4312 assert_eq!(
4313 view.selection_ranges(cx),
4314 vec![
4315 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
4316 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
4317 ]
4318 );
4319 });
4320
4321 view.update(cx, |view, cx| {
4322 view.add_selection_above(&AddSelectionAbove, cx);
4323 assert_eq!(
4324 view.selection_ranges(cx),
4325 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
4326 );
4327 });
4328
4329 view.update(cx, |view, cx| {
4330 view.add_selection_above(&AddSelectionAbove, cx);
4331 assert_eq!(
4332 view.selection_ranges(cx),
4333 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
4334 );
4335 });
4336
4337 view.update(cx, |view, cx| {
4338 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx)
4339 .unwrap();
4340 view.add_selection_below(&AddSelectionBelow, cx);
4341 assert_eq!(
4342 view.selection_ranges(cx),
4343 vec![
4344 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
4345 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
4346 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
4347 ]
4348 );
4349 });
4350
4351 view.update(cx, |view, cx| {
4352 view.add_selection_below(&AddSelectionBelow, cx);
4353 assert_eq!(
4354 view.selection_ranges(cx),
4355 vec![
4356 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
4357 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
4358 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
4359 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
4360 ]
4361 );
4362 });
4363
4364 view.update(cx, |view, cx| {
4365 view.add_selection_above(&AddSelectionAbove, cx);
4366 assert_eq!(
4367 view.selection_ranges(cx),
4368 vec![
4369 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
4370 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
4371 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
4372 ]
4373 );
4374 });
4375
4376 view.update(cx, |view, cx| {
4377 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx)
4378 .unwrap();
4379 });
4380 view.update(cx, |view, cx| {
4381 view.add_selection_above(&AddSelectionAbove, cx);
4382 assert_eq!(
4383 view.selection_ranges(cx),
4384 vec![
4385 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
4386 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
4387 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
4388 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
4389 ]
4390 );
4391 });
4392
4393 view.update(cx, |view, cx| {
4394 view.add_selection_below(&AddSelectionBelow, cx);
4395 assert_eq!(
4396 view.selection_ranges(cx),
4397 vec![
4398 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
4399 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
4400 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
4401 ]
4402 );
4403 });
4404 }
4405
4406 #[gpui::test]
4407 async fn test_select_larger_smaller_syntax_node(mut cx: gpui::TestAppContext) {
4408 let settings = cx.read(EditorSettings::test);
4409 let language = Arc::new(Language::new(
4410 LanguageConfig::default(),
4411 tree_sitter_rust::language(),
4412 ));
4413
4414 let text = r#"
4415 use mod1::mod2::{mod3, mod4};
4416
4417 fn fn_1(param1: bool, param2: &str) {
4418 let var1 = "text";
4419 }
4420 "#
4421 .unindent();
4422
4423 let buffer = cx.add_model(|cx| {
4424 let history = History::new(text.into());
4425 Buffer::from_history(0, history, None, Some(language), cx)
4426 });
4427 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
4428 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing())
4429 .await;
4430
4431 view.update(&mut cx, |view, cx| {
4432 view.select_display_ranges(
4433 &[
4434 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
4435 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
4436 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
4437 ],
4438 cx,
4439 )
4440 .unwrap();
4441 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
4442 });
4443 assert_eq!(
4444 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4445 &[
4446 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
4447 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
4448 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
4449 ]
4450 );
4451
4452 view.update(&mut cx, |view, cx| {
4453 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
4454 });
4455 assert_eq!(
4456 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4457 &[
4458 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
4459 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
4460 ]
4461 );
4462
4463 view.update(&mut cx, |view, cx| {
4464 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
4465 });
4466 assert_eq!(
4467 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4468 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
4469 );
4470
4471 // Trying to expand the selected syntax node one more time has no effect.
4472 view.update(&mut cx, |view, cx| {
4473 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
4474 });
4475 assert_eq!(
4476 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4477 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
4478 );
4479
4480 view.update(&mut cx, |view, cx| {
4481 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
4482 });
4483 assert_eq!(
4484 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4485 &[
4486 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
4487 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
4488 ]
4489 );
4490
4491 view.update(&mut cx, |view, cx| {
4492 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
4493 });
4494 assert_eq!(
4495 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4496 &[
4497 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
4498 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
4499 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
4500 ]
4501 );
4502
4503 view.update(&mut cx, |view, cx| {
4504 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
4505 });
4506 assert_eq!(
4507 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4508 &[
4509 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
4510 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
4511 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
4512 ]
4513 );
4514
4515 // Trying to shrink the selected syntax node one more time has no effect.
4516 view.update(&mut cx, |view, cx| {
4517 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
4518 });
4519 assert_eq!(
4520 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4521 &[
4522 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
4523 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
4524 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
4525 ]
4526 );
4527
4528 // Ensure that we keep expanding the selection if the larger selection starts or ends within
4529 // a fold.
4530 view.update(&mut cx, |view, cx| {
4531 view.fold_ranges(
4532 vec![
4533 Point::new(0, 21)..Point::new(0, 24),
4534 Point::new(3, 20)..Point::new(3, 22),
4535 ],
4536 cx,
4537 );
4538 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
4539 });
4540 assert_eq!(
4541 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4542 &[
4543 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
4544 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
4545 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
4546 ]
4547 );
4548 }
4549
4550 #[gpui::test]
4551 async fn test_autoclose_pairs(mut cx: gpui::TestAppContext) {
4552 let settings = cx.read(EditorSettings::test);
4553 let language = Arc::new(Language::new(
4554 LanguageConfig {
4555 brackets: vec![
4556 BracketPair {
4557 start: "{".to_string(),
4558 end: "}".to_string(),
4559 close: true,
4560 newline: true,
4561 },
4562 BracketPair {
4563 start: "/*".to_string(),
4564 end: " */".to_string(),
4565 close: true,
4566 newline: true,
4567 },
4568 ],
4569 ..Default::default()
4570 },
4571 tree_sitter_rust::language(),
4572 ));
4573
4574 let text = r#"
4575 a
4576
4577 /
4578
4579 "#
4580 .unindent();
4581
4582 let buffer = cx.add_model(|cx| {
4583 let history = History::new(text.into());
4584 Buffer::from_history(0, history, None, Some(language), cx)
4585 });
4586 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
4587 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing())
4588 .await;
4589
4590 view.update(&mut cx, |view, cx| {
4591 view.select_display_ranges(
4592 &[
4593 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
4594 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4595 ],
4596 cx,
4597 )
4598 .unwrap();
4599 view.handle_input(&Input("{".to_string()), cx);
4600 view.handle_input(&Input("{".to_string()), cx);
4601 view.handle_input(&Input("{".to_string()), cx);
4602 assert_eq!(
4603 view.text(cx),
4604 "
4605 {{{}}}
4606 {{{}}}
4607 /
4608
4609 "
4610 .unindent()
4611 );
4612
4613 view.move_right(&MoveRight, cx);
4614 view.handle_input(&Input("}".to_string()), cx);
4615 view.handle_input(&Input("}".to_string()), cx);
4616 view.handle_input(&Input("}".to_string()), cx);
4617 assert_eq!(
4618 view.text(cx),
4619 "
4620 {{{}}}}
4621 {{{}}}}
4622 /
4623
4624 "
4625 .unindent()
4626 );
4627
4628 view.undo(&Undo, cx);
4629 view.handle_input(&Input("/".to_string()), cx);
4630 view.handle_input(&Input("*".to_string()), cx);
4631 assert_eq!(
4632 view.text(cx),
4633 "
4634 /* */
4635 /* */
4636 /
4637
4638 "
4639 .unindent()
4640 );
4641
4642 view.undo(&Undo, cx);
4643 view.select_display_ranges(
4644 &[
4645 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4646 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
4647 ],
4648 cx,
4649 )
4650 .unwrap();
4651 view.handle_input(&Input("*".to_string()), cx);
4652 assert_eq!(
4653 view.text(cx),
4654 "
4655 a
4656
4657 /*
4658 *
4659 "
4660 .unindent()
4661 );
4662 });
4663 }
4664
4665 #[gpui::test]
4666 async fn test_extra_newline_insertion(mut cx: gpui::TestAppContext) {
4667 let settings = cx.read(EditorSettings::test);
4668 let language = Arc::new(Language::new(
4669 LanguageConfig {
4670 brackets: vec![
4671 BracketPair {
4672 start: "{".to_string(),
4673 end: "}".to_string(),
4674 close: true,
4675 newline: true,
4676 },
4677 BracketPair {
4678 start: "/* ".to_string(),
4679 end: " */".to_string(),
4680 close: true,
4681 newline: true,
4682 },
4683 ],
4684 ..Default::default()
4685 },
4686 tree_sitter_rust::language(),
4687 ));
4688
4689 let text = concat!(
4690 "{ }\n", // Suppress rustfmt
4691 " x\n", //
4692 " /* */\n", //
4693 "x\n", //
4694 "{{} }\n", //
4695 );
4696
4697 let buffer = cx.add_model(|cx| {
4698 let history = History::new(text.into());
4699 Buffer::from_history(0, history, None, Some(language), cx)
4700 });
4701 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
4702 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing())
4703 .await;
4704
4705 view.update(&mut cx, |view, cx| {
4706 view.select_display_ranges(
4707 &[
4708 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
4709 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
4710 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
4711 ],
4712 cx,
4713 )
4714 .unwrap();
4715 view.newline(&Newline, cx);
4716
4717 assert_eq!(
4718 view.buffer().read(cx).text(),
4719 concat!(
4720 "{ \n", // Suppress rustfmt
4721 "\n", //
4722 "}\n", //
4723 " x\n", //
4724 " /* \n", //
4725 " \n", //
4726 " */\n", //
4727 "x\n", //
4728 "{{} \n", //
4729 "}\n", //
4730 )
4731 );
4732 });
4733 }
4734
4735 impl Editor {
4736 fn selection_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
4737 self.selections_in_range(
4738 self.selection_set_id,
4739 DisplayPoint::zero()..self.max_point(cx),
4740 cx,
4741 )
4742 .collect::<Vec<_>>()
4743 }
4744 }
4745
4746 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
4747 let point = DisplayPoint::new(row as u32, column as u32);
4748 point..point
4749 }
4750
4751 fn build_editor(
4752 buffer: ModelHandle<Buffer>,
4753 settings: EditorSettings,
4754 cx: &mut ViewContext<Editor>,
4755 ) -> Editor {
4756 Editor::for_buffer(buffer, move |_| settings.clone(), cx)
4757 }
4758}
4759
4760trait RangeExt<T> {
4761 fn sorted(&self) -> Range<T>;
4762 fn to_inclusive(&self) -> RangeInclusive<T>;
4763}
4764
4765impl<T: Ord + Clone> RangeExt<T> for Range<T> {
4766 fn sorted(&self) -> Self {
4767 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
4768 }
4769
4770 fn to_inclusive(&self) -> RangeInclusive<T> {
4771 self.start.clone()..=self.end.clone()
4772 }
4773}