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