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