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!(Input, 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", Input("\n".into()), Some("Editor && mode == full")),
99 Binding::new(
100 "alt-enter",
101 Input("\n".into()),
102 Some("Editor && mode == auto_height"),
103 ),
104 Binding::new("tab", Input("\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::handle_input);
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 autoclose_stack: Vec<AutoclosePairState>,
296 select_larger_syntax_node_stack: Vec<Arc<[Selection]>>,
297 scroll_position: Vector2F,
298 scroll_top_anchor: Anchor,
299 autoscroll_requested: bool,
300 build_settings: Rc<RefCell<dyn Fn(&AppContext) -> EditorSettings>>,
301 focused: bool,
302 show_local_cursors: bool,
303 blink_epoch: usize,
304 blinking_paused: bool,
305 mode: EditorMode,
306 placeholder_text: Option<Arc<str>>,
307}
308
309pub struct Snapshot {
310 pub mode: EditorMode,
311 pub display_snapshot: DisplayMapSnapshot,
312 pub placeholder_text: Option<Arc<str>>,
313 is_focused: bool,
314 scroll_position: Vector2F,
315 scroll_top_anchor: Anchor,
316}
317
318struct AddSelectionsState {
319 above: bool,
320 stack: Vec<usize>,
321}
322
323struct AutoclosePairState {
324 ranges: SmallVec<[Range<Anchor>; 32]>,
325 pair: AutoclosePair,
326}
327
328#[derive(Serialize, Deserialize)]
329struct ClipboardSelection {
330 len: usize,
331 is_entire_line: bool,
332}
333
334impl Editor {
335 pub fn single_line(
336 build_settings: impl 'static + Fn(&AppContext) -> EditorSettings,
337 cx: &mut ViewContext<Self>,
338 ) -> Self {
339 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
340 let mut view = Self::for_buffer(buffer, build_settings, cx);
341 view.mode = EditorMode::SingleLine;
342 view
343 }
344
345 pub fn auto_height(
346 max_lines: usize,
347 build_settings: impl 'static + Fn(&AppContext) -> EditorSettings,
348 cx: &mut ViewContext<Self>,
349 ) -> Self {
350 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
351 let mut view = Self::for_buffer(buffer, build_settings, cx);
352 view.mode = EditorMode::AutoHeight { max_lines };
353 view
354 }
355
356 pub fn for_buffer(
357 buffer: ModelHandle<Buffer>,
358 build_settings: impl 'static + Fn(&AppContext) -> EditorSettings,
359 cx: &mut ViewContext<Self>,
360 ) -> Self {
361 Self::new(buffer, Rc::new(RefCell::new(build_settings)), cx)
362 }
363
364 pub fn clone(&self, cx: &mut ViewContext<Self>) -> Self {
365 let mut clone = Self::new(self.buffer.clone(), self.build_settings.clone(), cx);
366 clone.scroll_position = self.scroll_position;
367 clone.scroll_top_anchor = self.scroll_top_anchor.clone();
368 clone
369 }
370
371 pub fn new(
372 buffer: ModelHandle<Buffer>,
373 build_settings: Rc<RefCell<dyn Fn(&AppContext) -> EditorSettings>>,
374 cx: &mut ViewContext<Self>,
375 ) -> Self {
376 let settings = build_settings.borrow_mut()(cx);
377 let display_map = cx.add_model(|cx| {
378 DisplayMap::new(
379 buffer.clone(),
380 settings.tab_size,
381 settings.style.text.font_id,
382 settings.style.text.font_size,
383 None,
384 cx,
385 )
386 });
387 cx.observe(&buffer, Self::on_buffer_changed).detach();
388 cx.subscribe(&buffer, Self::on_buffer_event).detach();
389 cx.observe(&display_map, Self::on_display_map_changed)
390 .detach();
391
392 let mut next_selection_id = 0;
393 let selection_set_id = buffer.update(cx, |buffer, cx| {
394 buffer.add_selection_set(
395 vec![Selection {
396 id: post_inc(&mut next_selection_id),
397 start: buffer.anchor_before(0),
398 end: buffer.anchor_before(0),
399 reversed: false,
400 goal: SelectionGoal::None,
401 }],
402 cx,
403 )
404 });
405 Self {
406 handle: cx.handle().downgrade(),
407 buffer,
408 display_map,
409 selection_set_id,
410 pending_selection: None,
411 next_selection_id,
412 add_selections_state: None,
413 autoclose_stack: Default::default(),
414 select_larger_syntax_node_stack: Vec::new(),
415 build_settings,
416 scroll_position: Vector2F::zero(),
417 scroll_top_anchor: Anchor::min(),
418 autoscroll_requested: false,
419 focused: false,
420 show_local_cursors: false,
421 blink_epoch: 0,
422 blinking_paused: false,
423 mode: EditorMode::Full,
424 placeholder_text: None,
425 }
426 }
427
428 pub fn replica_id(&self, cx: &AppContext) -> ReplicaId {
429 self.buffer.read(cx).replica_id()
430 }
431
432 pub fn buffer(&self) -> &ModelHandle<Buffer> {
433 &self.buffer
434 }
435
436 pub fn snapshot(&mut self, cx: &mut MutableAppContext) -> Snapshot {
437 Snapshot {
438 mode: self.mode,
439 display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
440 scroll_position: self.scroll_position,
441 scroll_top_anchor: self.scroll_top_anchor.clone(),
442 placeholder_text: self.placeholder_text.clone(),
443 is_focused: self
444 .handle
445 .upgrade(cx)
446 .map_or(false, |handle| handle.is_focused(cx)),
447 }
448 }
449
450 pub fn language<'a>(&self, cx: &'a AppContext) -> Option<&'a Arc<Language>> {
451 self.buffer.read(cx).language()
452 }
453
454 pub fn set_placeholder_text(
455 &mut self,
456 placeholder_text: impl Into<Arc<str>>,
457 cx: &mut ViewContext<Self>,
458 ) {
459 self.placeholder_text = Some(placeholder_text.into());
460 cx.notify();
461 }
462
463 fn set_scroll_position(&mut self, mut scroll_position: Vector2F, cx: &mut ViewContext<Self>) {
464 let map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
465 let scroll_top_buffer_offset =
466 DisplayPoint::new(scroll_position.y() as u32, 0).to_buffer_offset(&map, Bias::Right);
467 self.scroll_top_anchor = self
468 .buffer
469 .read(cx)
470 .anchor_at(scroll_top_buffer_offset, Bias::Right);
471 scroll_position.set_y(scroll_position.y().fract());
472 self.scroll_position = scroll_position;
473 cx.notify();
474 }
475
476 pub fn clamp_scroll_left(&mut self, max: f32) -> bool {
477 if max < self.scroll_position.x() {
478 self.scroll_position.set_x(max);
479 true
480 } else {
481 false
482 }
483 }
484
485 pub fn autoscroll_vertically(
486 &mut self,
487 viewport_height: f32,
488 line_height: f32,
489 cx: &mut ViewContext<Self>,
490 ) -> bool {
491 let visible_lines = viewport_height / line_height;
492 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
493 let mut scroll_position =
494 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor);
495 let max_scroll_top = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
496 (display_map.max_point().row() as f32 - visible_lines + 1.).max(0.)
497 } else {
498 display_map.max_point().row().saturating_sub(1) as f32
499 };
500 if scroll_position.y() > max_scroll_top {
501 scroll_position.set_y(max_scroll_top);
502 self.set_scroll_position(scroll_position, cx);
503 }
504
505 if self.autoscroll_requested {
506 self.autoscroll_requested = false;
507 } else {
508 return false;
509 }
510
511 let selections = self.selections(cx);
512 let first_cursor_top = selections
513 .first()
514 .unwrap()
515 .head()
516 .to_display_point(&display_map, Bias::Left)
517 .row() as f32;
518 let last_cursor_bottom = selections
519 .last()
520 .unwrap()
521 .head()
522 .to_display_point(&display_map, Bias::Right)
523 .row() as f32
524 + 1.0;
525
526 let margin = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
527 0.
528 } else {
529 ((visible_lines - (last_cursor_bottom - first_cursor_top)) / 2.0)
530 .floor()
531 .min(3.0)
532 };
533 if margin < 0.0 {
534 return false;
535 }
536
537 let target_top = (first_cursor_top - margin).max(0.0);
538 let target_bottom = last_cursor_bottom + margin;
539 let start_row = scroll_position.y();
540 let end_row = start_row + visible_lines;
541
542 if target_top < start_row {
543 scroll_position.set_y(target_top);
544 self.set_scroll_position(scroll_position, cx);
545 } else if target_bottom >= end_row {
546 scroll_position.set_y(target_bottom - visible_lines);
547 self.set_scroll_position(scroll_position, cx);
548 }
549
550 true
551 }
552
553 pub fn autoscroll_horizontally(
554 &mut self,
555 start_row: u32,
556 viewport_width: f32,
557 scroll_width: f32,
558 max_glyph_width: f32,
559 layouts: &[text_layout::Line],
560 cx: &mut ViewContext<Self>,
561 ) -> bool {
562 let selections = self.selections(cx);
563 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
564 let mut target_left = std::f32::INFINITY;
565 let mut target_right = 0.0_f32;
566 for selection in selections.iter() {
567 let head = selection.head().to_display_point(&display_map, Bias::Left);
568 let start_column = head.column().saturating_sub(3);
569 let end_column = cmp::min(display_map.line_len(head.row()), head.column() + 3);
570 target_left = target_left
571 .min(layouts[(head.row() - start_row) as usize].x_for_index(start_column as usize));
572 target_right = target_right.max(
573 layouts[(head.row() - start_row) as usize].x_for_index(end_column as usize)
574 + max_glyph_width,
575 );
576 }
577 target_right = target_right.min(scroll_width);
578
579 if target_right - target_left > viewport_width {
580 return false;
581 }
582
583 let scroll_left = self.scroll_position.x() * max_glyph_width;
584 let scroll_right = scroll_left + viewport_width;
585
586 if target_left < scroll_left {
587 self.scroll_position.set_x(target_left / max_glyph_width);
588 true
589 } else if target_right > scroll_right {
590 self.scroll_position
591 .set_x((target_right - viewport_width) / max_glyph_width);
592 true
593 } else {
594 false
595 }
596 }
597
598 fn select(&mut self, Select(phase): &Select, cx: &mut ViewContext<Self>) {
599 match phase {
600 SelectPhase::Begin { position, add } => self.begin_selection(*position, *add, cx),
601 SelectPhase::Update {
602 position,
603 scroll_position,
604 } => self.update_selection(*position, *scroll_position, cx),
605 SelectPhase::End => self.end_selection(cx),
606 }
607 }
608
609 fn begin_selection(&mut self, position: DisplayPoint, add: bool, cx: &mut ViewContext<Self>) {
610 if !self.focused {
611 cx.focus_self();
612 cx.emit(Event::Activate);
613 }
614
615 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
616 let cursor = display_map.anchor_before(position, Bias::Left);
617 let selection = Selection {
618 id: post_inc(&mut self.next_selection_id),
619 start: cursor.clone(),
620 end: cursor,
621 reversed: false,
622 goal: SelectionGoal::None,
623 };
624
625 if !add {
626 self.update_selections(Vec::new(), false, cx);
627 }
628 self.pending_selection = Some(selection);
629
630 cx.notify();
631 }
632
633 fn update_selection(
634 &mut self,
635 position: DisplayPoint,
636 scroll_position: Vector2F,
637 cx: &mut ViewContext<Self>,
638 ) {
639 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
640 let buffer = self.buffer.read(cx);
641 let cursor = display_map.anchor_before(position, Bias::Left);
642 if let Some(selection) = self.pending_selection.as_mut() {
643 selection.set_head(buffer, cursor);
644 } else {
645 log::error!("update_selection dispatched with no pending selection");
646 return;
647 }
648
649 self.set_scroll_position(scroll_position, cx);
650 cx.notify();
651 }
652
653 fn end_selection(&mut self, cx: &mut ViewContext<Self>) {
654 if let Some(selection) = self.pending_selection.take() {
655 let mut selections = self.selections(cx).to_vec();
656 let ix = self.selection_insertion_index(&selections, &selection.start, cx.as_ref());
657 selections.insert(ix, selection);
658 self.update_selections(selections, false, cx);
659 }
660 }
661
662 pub fn is_selecting(&self) -> bool {
663 self.pending_selection.is_some()
664 }
665
666 pub fn cancel(&mut self, _: &Cancel, cx: &mut ViewContext<Self>) {
667 if let Some(pending_selection) = self.pending_selection.take() {
668 let selections = self.selections(cx);
669 if selections.is_empty() {
670 self.update_selections(vec![pending_selection], true, cx);
671 }
672 } else {
673 let selections = self.selections(cx);
674 let mut oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
675 if selections.len() == 1 {
676 oldest_selection.start = oldest_selection.head().clone();
677 oldest_selection.end = oldest_selection.head().clone();
678 }
679 self.update_selections(vec![oldest_selection], true, cx);
680 }
681 }
682
683 fn select_ranges<I, T>(&mut self, ranges: I, autoscroll: bool, cx: &mut ViewContext<Self>)
684 where
685 I: IntoIterator<Item = Range<T>>,
686 T: ToOffset,
687 {
688 let buffer = self.buffer.read(cx);
689 let mut selections = Vec::new();
690 for range in ranges {
691 let mut start = range.start.to_offset(buffer);
692 let mut end = range.end.to_offset(buffer);
693 let reversed = if start > end {
694 mem::swap(&mut start, &mut end);
695 true
696 } else {
697 false
698 };
699 selections.push(Selection {
700 id: post_inc(&mut self.next_selection_id),
701 start: buffer.anchor_before(start),
702 end: buffer.anchor_before(end),
703 reversed,
704 goal: SelectionGoal::None,
705 });
706 }
707 self.update_selections(selections, autoscroll, cx);
708 }
709
710 #[cfg(test)]
711 fn select_display_ranges<'a, T>(
712 &mut self,
713 ranges: T,
714 cx: &mut ViewContext<Self>,
715 ) -> anyhow::Result<()>
716 where
717 T: IntoIterator<Item = &'a Range<DisplayPoint>>,
718 {
719 let mut selections = Vec::new();
720 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
721 for range in ranges {
722 let mut start = range.start;
723 let mut end = range.end;
724 let reversed = if start > end {
725 mem::swap(&mut start, &mut end);
726 true
727 } else {
728 false
729 };
730
731 selections.push(Selection {
732 id: post_inc(&mut self.next_selection_id),
733 start: display_map.anchor_before(start, Bias::Left),
734 end: display_map.anchor_before(end, Bias::Left),
735 reversed,
736 goal: SelectionGoal::None,
737 });
738 }
739 self.update_selections(selections, false, cx);
740 Ok(())
741 }
742
743 pub fn handle_input(&mut self, action: &Input, cx: &mut ViewContext<Self>) {
744 let text = action.0.as_ref();
745 if !self.skip_autoclose_end(text, cx) {
746 self.start_transaction(cx);
747 self.insert(text, cx);
748 self.request_autoindent(cx);
749 self.autoclose_pairs(cx);
750 self.end_transaction(cx);
751 }
752 }
753
754 fn insert(&mut self, text: &str, cx: &mut ViewContext<Self>) {
755 self.start_transaction(cx);
756 let mut old_selections = SmallVec::<[_; 32]>::new();
757 {
758 let selections = self.selections(cx);
759 let buffer = self.buffer.read(cx);
760 for selection in selections.iter() {
761 let start = selection.start.to_offset(buffer);
762 let end = selection.end.to_offset(buffer);
763 old_selections.push((selection.id, start..end));
764 }
765 }
766
767 let mut new_selections = Vec::new();
768 self.buffer.update(cx, |buffer, cx| {
769 let edit_ranges = old_selections.iter().map(|(_, range)| range.clone());
770 buffer.edit(edit_ranges, text, cx);
771 let text_len = text.len() as isize;
772 let mut delta = 0_isize;
773 new_selections = old_selections
774 .into_iter()
775 .map(|(id, range)| {
776 let start = range.start as isize;
777 let end = range.end as isize;
778 let anchor = buffer.anchor_before((start + delta + text_len) as usize);
779 let deleted_count = end - start;
780 delta += text_len - deleted_count;
781 Selection {
782 id,
783 start: anchor.clone(),
784 end: anchor,
785 reversed: false,
786 goal: SelectionGoal::None,
787 }
788 })
789 .collect();
790 });
791
792 self.update_selections(new_selections, true, cx);
793 self.end_transaction(cx);
794 }
795
796 fn request_autoindent(&mut self, cx: &mut ViewContext<Self>) {
797 let selections = self.selections(cx);
798 let tab_size = self.build_settings.borrow()(cx).tab_size as u8;
799 self.buffer.update(cx, |buffer, _| {
800 for selection in selections.iter() {
801 let row = selection.head().to_point(&*buffer).row;
802 buffer.request_autoindent_for_line(row, tab_size, true);
803 }
804 });
805 }
806
807 fn autoclose_pairs(&mut self, cx: &mut ViewContext<Self>) {
808 let selections = self.selections(cx);
809 let new_autoclose_pair_state = self.buffer.update(cx, |buffer, cx| {
810 let autoclose_pair = buffer.language().and_then(|language| {
811 let first_selection_start = selections.first().unwrap().start.to_offset(&*buffer);
812 let pair = language.autoclose_pairs().iter().find(|pair| {
813 buffer.contains_str_at(
814 first_selection_start.saturating_sub(pair.start.len()),
815 &pair.start,
816 )
817 });
818 pair.and_then(|pair| {
819 let should_autoclose = selections[1..].iter().all(|selection| {
820 let selection_start = selection.start.to_offset(&*buffer);
821 buffer.contains_str_at(
822 selection_start.saturating_sub(pair.start.len()),
823 &pair.start,
824 )
825 });
826
827 if should_autoclose {
828 Some(pair.clone())
829 } else {
830 None
831 }
832 })
833 });
834
835 autoclose_pair.and_then(|pair| {
836 let selection_ranges = selections
837 .iter()
838 .map(|selection| {
839 let start = selection.start.to_offset(&*buffer);
840 start..start
841 })
842 .collect::<SmallVec<[_; 32]>>();
843
844 buffer.edit(selection_ranges, &pair.end, cx);
845
846 if pair.end.len() == 1 {
847 Some(AutoclosePairState {
848 ranges: selections
849 .iter()
850 .map(|selection| {
851 selection.start.bias_left(buffer)
852 ..selection.start.bias_right(buffer)
853 })
854 .collect(),
855 pair,
856 })
857 } else {
858 None
859 }
860 })
861 });
862 self.autoclose_stack.extend(new_autoclose_pair_state);
863 }
864
865 fn skip_autoclose_end(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
866 let old_selections = self.selections(cx);
867 let autoclose_pair_state = if let Some(autoclose_pair_state) = self.autoclose_stack.last() {
868 autoclose_pair_state
869 } else {
870 return false;
871 };
872 if text != autoclose_pair_state.pair.end {
873 return false;
874 }
875
876 debug_assert_eq!(old_selections.len(), autoclose_pair_state.ranges.len());
877
878 let buffer = self.buffer.read(cx);
879 let old_selection_ranges: SmallVec<[_; 32]> = old_selections
880 .iter()
881 .map(|selection| (selection.id, selection.offset_range(buffer)))
882 .collect();
883 if old_selection_ranges
884 .iter()
885 .zip(&autoclose_pair_state.ranges)
886 .all(|((_, selection_range), autoclose_range)| {
887 let autoclose_range_end = autoclose_range.end.to_offset(buffer);
888 selection_range.is_empty() && selection_range.start == autoclose_range_end
889 })
890 {
891 let new_selections = old_selection_ranges
892 .into_iter()
893 .map(|(id, range)| {
894 let new_head = buffer.anchor_before(range.start + 1);
895 Selection {
896 id,
897 start: new_head.clone(),
898 end: new_head,
899 reversed: false,
900 goal: SelectionGoal::None,
901 }
902 })
903 .collect();
904 self.autoclose_stack.pop();
905 self.update_selections(new_selections, true, cx);
906 true
907 } else {
908 false
909 }
910 }
911
912 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
913 self.start_transaction(cx);
914 self.select_all(&SelectAll, cx);
915 self.insert("", cx);
916 self.end_transaction(cx);
917 }
918
919 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
920 self.start_transaction(cx);
921 let mut selections = self.selections(cx).to_vec();
922 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
923 {
924 let buffer = self.buffer.read(cx);
925 for selection in &mut selections {
926 let range = selection.point_range(buffer);
927 if range.start == range.end {
928 let head = selection.head().to_display_point(&display_map, Bias::Left);
929 let cursor = display_map
930 .anchor_before(movement::left(&display_map, head).unwrap(), Bias::Left);
931 selection.set_head(&buffer, cursor);
932 selection.goal = SelectionGoal::None;
933 }
934 }
935 }
936
937 self.update_selections(selections, true, cx);
938 self.insert("", cx);
939 self.end_transaction(cx);
940 }
941
942 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
943 self.start_transaction(cx);
944 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
945 let mut selections = self.selections(cx).to_vec();
946 {
947 let buffer = self.buffer.read(cx);
948 for selection in &mut selections {
949 let range = selection.point_range(buffer);
950 if range.start == range.end {
951 let head = selection.head().to_display_point(&display_map, Bias::Left);
952 let cursor = display_map
953 .anchor_before(movement::right(&display_map, head).unwrap(), Bias::Right);
954 selection.set_head(&buffer, cursor);
955 selection.goal = SelectionGoal::None;
956 }
957 }
958 }
959
960 self.update_selections(selections, true, cx);
961 self.insert(&"", cx);
962 self.end_transaction(cx);
963 }
964
965 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
966 self.start_transaction(cx);
967
968 let selections = self.selections(cx);
969 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
970 let buffer = self.buffer.read(cx);
971
972 let mut new_cursors = Vec::new();
973 let mut edit_ranges = Vec::new();
974
975 let mut selections = selections.iter().peekable();
976 while let Some(selection) = selections.next() {
977 let mut rows = selection.spanned_rows(false, &display_map).buffer_rows;
978 let goal_display_column = selection
979 .head()
980 .to_display_point(&display_map, Bias::Left)
981 .column();
982
983 // Accumulate contiguous regions of rows that we want to delete.
984 while let Some(next_selection) = selections.peek() {
985 let next_rows = next_selection.spanned_rows(false, &display_map).buffer_rows;
986 if next_rows.start <= rows.end {
987 rows.end = next_rows.end;
988 selections.next().unwrap();
989 } else {
990 break;
991 }
992 }
993
994 let mut edit_start = Point::new(rows.start, 0).to_offset(buffer);
995 let edit_end;
996 let cursor_buffer_row;
997 if buffer.max_point().row >= rows.end {
998 // If there's a line after the range, delete the \n from the end of the row range
999 // and position the cursor on the next line.
1000 edit_end = Point::new(rows.end, 0).to_offset(buffer);
1001 cursor_buffer_row = rows.end;
1002 } else {
1003 // If there isn't a line after the range, delete the \n from the line before the
1004 // start of the row range and position the cursor there.
1005 edit_start = edit_start.saturating_sub(1);
1006 edit_end = buffer.len();
1007 cursor_buffer_row = rows.start.saturating_sub(1);
1008 }
1009
1010 let mut cursor =
1011 Point::new(cursor_buffer_row, 0).to_display_point(&display_map, Bias::Left);
1012 *cursor.column_mut() =
1013 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
1014
1015 new_cursors.push((
1016 selection.id,
1017 cursor.to_buffer_point(&display_map, Bias::Left),
1018 ));
1019 edit_ranges.push(edit_start..edit_end);
1020 }
1021
1022 new_cursors.sort_unstable_by_key(|(_, range)| range.clone());
1023 let new_selections = new_cursors
1024 .into_iter()
1025 .map(|(id, cursor)| {
1026 let anchor = buffer.anchor_before(cursor);
1027 Selection {
1028 id,
1029 start: anchor.clone(),
1030 end: anchor,
1031 reversed: false,
1032 goal: SelectionGoal::None,
1033 }
1034 })
1035 .collect();
1036 self.buffer
1037 .update(cx, |buffer, cx| buffer.edit(edit_ranges, "", cx));
1038 self.update_selections(new_selections, true, cx);
1039 self.end_transaction(cx);
1040 }
1041
1042 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
1043 self.start_transaction(cx);
1044
1045 let mut selections = self.selections(cx).to_vec();
1046 {
1047 // Temporarily bias selections right to allow newly duplicate lines to push them down
1048 // when the selections are at the beginning of a line.
1049 let buffer = self.buffer.read(cx);
1050 for selection in &mut selections {
1051 selection.start = selection.start.bias_right(buffer);
1052 selection.end = selection.end.bias_right(buffer);
1053 }
1054 }
1055 self.update_selections(selections.clone(), false, cx);
1056
1057 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1058 let buffer = self.buffer.read(cx);
1059
1060 let mut edits = Vec::new();
1061 let mut selections_iter = selections.iter_mut().peekable();
1062 while let Some(selection) = selections_iter.next() {
1063 // Avoid duplicating the same lines twice.
1064 let mut rows = selection.spanned_rows(false, &display_map).buffer_rows;
1065 while let Some(next_selection) = selections_iter.peek() {
1066 let next_rows = next_selection.spanned_rows(false, &display_map).buffer_rows;
1067 if next_rows.start <= rows.end - 1 {
1068 rows.end = next_rows.end;
1069 selections_iter.next().unwrap();
1070 } else {
1071 break;
1072 }
1073 }
1074
1075 // Copy the text from the selected row region and splice it at the start of the region.
1076 let start = Point::new(rows.start, 0);
1077 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
1078 let text = buffer
1079 .text_for_range(start..end)
1080 .chain(Some("\n"))
1081 .collect::<String>();
1082 edits.push((start, text));
1083 }
1084
1085 self.buffer.update(cx, |buffer, cx| {
1086 for (offset, text) in edits.into_iter().rev() {
1087 buffer.edit(Some(offset..offset), text, cx);
1088 }
1089 });
1090
1091 // Restore bias on selections.
1092 let buffer = self.buffer.read(cx);
1093 for selection in &mut selections {
1094 selection.start = selection.start.bias_left(buffer);
1095 selection.end = selection.end.bias_left(buffer);
1096 }
1097 self.update_selections(selections, true, cx);
1098
1099 self.end_transaction(cx);
1100 }
1101
1102 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
1103 self.start_transaction(cx);
1104
1105 let selections = self.selections(cx);
1106 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1107 let buffer = self.buffer.read(cx);
1108
1109 let mut edits = Vec::new();
1110 let mut new_selection_ranges = Vec::new();
1111 let mut old_folds = Vec::new();
1112 let mut new_folds = Vec::new();
1113
1114 let mut selections = selections.iter().peekable();
1115 let mut contiguous_selections = Vec::new();
1116 while let Some(selection) = selections.next() {
1117 // Accumulate contiguous regions of rows that we want to move.
1118 contiguous_selections.push(selection.point_range(buffer));
1119 let SpannedRows {
1120 mut buffer_rows,
1121 mut display_rows,
1122 } = selection.spanned_rows(false, &display_map);
1123
1124 while let Some(next_selection) = selections.peek() {
1125 let SpannedRows {
1126 buffer_rows: next_buffer_rows,
1127 display_rows: next_display_rows,
1128 } = next_selection.spanned_rows(false, &display_map);
1129 if next_buffer_rows.start <= buffer_rows.end {
1130 buffer_rows.end = next_buffer_rows.end;
1131 display_rows.end = next_display_rows.end;
1132 contiguous_selections.push(next_selection.point_range(buffer));
1133 selections.next().unwrap();
1134 } else {
1135 break;
1136 }
1137 }
1138
1139 // Cut the text from the selected rows and paste it at the start of the previous line.
1140 if display_rows.start != 0 {
1141 let start = Point::new(buffer_rows.start, 0).to_offset(buffer);
1142 let end = Point::new(buffer_rows.end - 1, buffer.line_len(buffer_rows.end - 1))
1143 .to_offset(buffer);
1144
1145 let prev_row_display_start = DisplayPoint::new(display_rows.start - 1, 0);
1146 let prev_row_buffer_start = display_map.prev_row_boundary(prev_row_display_start).1;
1147 let prev_row_buffer_start_offset = prev_row_buffer_start.to_offset(buffer);
1148
1149 let mut text = String::new();
1150 text.extend(buffer.text_for_range(start..end));
1151 text.push('\n');
1152 edits.push((
1153 prev_row_buffer_start_offset..prev_row_buffer_start_offset,
1154 text,
1155 ));
1156 edits.push((start - 1..end, String::new()));
1157
1158 let row_delta = buffer_rows.start - prev_row_buffer_start.row;
1159
1160 // Move selections up.
1161 for range in &mut contiguous_selections {
1162 range.start.row -= row_delta;
1163 range.end.row -= row_delta;
1164 }
1165
1166 // Move folds up.
1167 old_folds.push(start..end);
1168 for fold in display_map.folds_in_range(start..end) {
1169 let mut start = fold.start.to_point(buffer);
1170 let mut end = fold.end.to_point(buffer);
1171 start.row -= row_delta;
1172 end.row -= row_delta;
1173 new_folds.push(start..end);
1174 }
1175 }
1176
1177 new_selection_ranges.extend(contiguous_selections.drain(..));
1178 }
1179
1180 self.unfold_ranges(old_folds, cx);
1181 self.buffer.update(cx, |buffer, cx| {
1182 for (range, text) in edits.into_iter().rev() {
1183 buffer.edit(Some(range), text, cx);
1184 }
1185 });
1186 self.fold_ranges(new_folds, cx);
1187 self.select_ranges(new_selection_ranges, true, cx);
1188
1189 self.end_transaction(cx);
1190 }
1191
1192 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
1193 self.start_transaction(cx);
1194
1195 let selections = self.selections(cx);
1196 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1197 let buffer = self.buffer.read(cx);
1198
1199 let mut edits = Vec::new();
1200 let mut new_selection_ranges = Vec::new();
1201 let mut old_folds = Vec::new();
1202 let mut new_folds = Vec::new();
1203
1204 let mut selections = selections.iter().peekable();
1205 let mut contiguous_selections = Vec::new();
1206 while let Some(selection) = selections.next() {
1207 // Accumulate contiguous regions of rows that we want to move.
1208 contiguous_selections.push(selection.point_range(buffer));
1209 let SpannedRows {
1210 mut buffer_rows,
1211 mut display_rows,
1212 } = selection.spanned_rows(false, &display_map);
1213 while let Some(next_selection) = selections.peek() {
1214 let SpannedRows {
1215 buffer_rows: next_buffer_rows,
1216 display_rows: next_display_rows,
1217 } = next_selection.spanned_rows(false, &display_map);
1218 if next_buffer_rows.start <= buffer_rows.end {
1219 buffer_rows.end = next_buffer_rows.end;
1220 display_rows.end = next_display_rows.end;
1221 contiguous_selections.push(next_selection.point_range(buffer));
1222 selections.next().unwrap();
1223 } else {
1224 break;
1225 }
1226 }
1227
1228 // Cut the text from the selected rows and paste it at the end of the next line.
1229 if display_rows.end <= display_map.max_point().row() {
1230 let start = Point::new(buffer_rows.start, 0).to_offset(buffer);
1231 let end = Point::new(buffer_rows.end - 1, buffer.line_len(buffer_rows.end - 1))
1232 .to_offset(buffer);
1233
1234 let next_row_display_end =
1235 DisplayPoint::new(display_rows.end, display_map.line_len(display_rows.end));
1236 let next_row_buffer_end = display_map.next_row_boundary(next_row_display_end).1;
1237 let next_row_buffer_end_offset = next_row_buffer_end.to_offset(buffer);
1238
1239 let mut text = String::new();
1240 text.push('\n');
1241 text.extend(buffer.text_for_range(start..end));
1242 edits.push((start..end + 1, String::new()));
1243 edits.push((next_row_buffer_end_offset..next_row_buffer_end_offset, text));
1244
1245 let row_delta = next_row_buffer_end.row - buffer_rows.end + 1;
1246
1247 // Move selections down.
1248 for range in &mut contiguous_selections {
1249 range.start.row += row_delta;
1250 range.end.row += row_delta;
1251 }
1252
1253 // Move folds down.
1254 old_folds.push(start..end);
1255 for fold in display_map.folds_in_range(start..end) {
1256 let mut start = fold.start.to_point(buffer);
1257 let mut end = fold.end.to_point(buffer);
1258 start.row += row_delta;
1259 end.row += row_delta;
1260 new_folds.push(start..end);
1261 }
1262 }
1263
1264 new_selection_ranges.extend(contiguous_selections.drain(..));
1265 }
1266
1267 self.unfold_ranges(old_folds, cx);
1268 self.buffer.update(cx, |buffer, cx| {
1269 for (range, text) in edits.into_iter().rev() {
1270 buffer.edit(Some(range), text, cx);
1271 }
1272 });
1273 self.fold_ranges(new_folds, cx);
1274 self.select_ranges(new_selection_ranges, true, cx);
1275
1276 self.end_transaction(cx);
1277 }
1278
1279 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
1280 self.start_transaction(cx);
1281 let mut text = String::new();
1282 let mut selections = self.selections(cx).to_vec();
1283 let mut clipboard_selections = Vec::with_capacity(selections.len());
1284 {
1285 let buffer = self.buffer.read(cx);
1286 let max_point = buffer.max_point();
1287 for selection in &mut selections {
1288 let mut start = selection.start.to_point(buffer);
1289 let mut end = selection.end.to_point(buffer);
1290 let is_entire_line = start == end;
1291 if is_entire_line {
1292 start = Point::new(start.row, 0);
1293 end = cmp::min(max_point, Point::new(start.row + 1, 0));
1294 selection.start = buffer.anchor_before(start);
1295 selection.end = buffer.anchor_before(end);
1296 }
1297 let mut len = 0;
1298 for chunk in buffer.text_for_range(start..end) {
1299 text.push_str(chunk);
1300 len += chunk.len();
1301 }
1302 clipboard_selections.push(ClipboardSelection {
1303 len,
1304 is_entire_line,
1305 });
1306 }
1307 }
1308 self.update_selections(selections, true, cx);
1309 self.insert("", cx);
1310 self.end_transaction(cx);
1311
1312 cx.as_mut()
1313 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
1314 }
1315
1316 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
1317 let selections = self.selections(cx);
1318 let buffer = self.buffer.read(cx);
1319 let max_point = buffer.max_point();
1320 let mut text = String::new();
1321 let mut clipboard_selections = Vec::with_capacity(selections.len());
1322 for selection in selections.iter() {
1323 let mut start = selection.start.to_point(buffer);
1324 let mut end = selection.end.to_point(buffer);
1325 let is_entire_line = start == end;
1326 if is_entire_line {
1327 start = Point::new(start.row, 0);
1328 end = cmp::min(max_point, Point::new(start.row + 1, 0));
1329 }
1330 let mut len = 0;
1331 for chunk in buffer.text_for_range(start..end) {
1332 text.push_str(chunk);
1333 len += chunk.len();
1334 }
1335 clipboard_selections.push(ClipboardSelection {
1336 len,
1337 is_entire_line,
1338 });
1339 }
1340
1341 cx.as_mut()
1342 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
1343 }
1344
1345 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
1346 if let Some(item) = cx.as_mut().read_from_clipboard() {
1347 let clipboard_text = item.text();
1348 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
1349 let selections = self.selections(cx);
1350 let all_selections_were_entire_line =
1351 clipboard_selections.iter().all(|s| s.is_entire_line);
1352 if clipboard_selections.len() != selections.len() {
1353 clipboard_selections.clear();
1354 }
1355
1356 let mut start_offset = 0;
1357 let mut new_selections = Vec::with_capacity(selections.len());
1358 for (i, selection) in selections.iter().enumerate() {
1359 let to_insert;
1360 let entire_line;
1361 if let Some(clipboard_selection) = clipboard_selections.get(i) {
1362 let end_offset = start_offset + clipboard_selection.len;
1363 to_insert = &clipboard_text[start_offset..end_offset];
1364 entire_line = clipboard_selection.is_entire_line;
1365 start_offset = end_offset
1366 } else {
1367 to_insert = clipboard_text.as_str();
1368 entire_line = all_selections_were_entire_line;
1369 }
1370
1371 self.buffer.update(cx, |buffer, cx| {
1372 let selection_start = selection.start.to_point(&*buffer);
1373 let selection_end = selection.end.to_point(&*buffer);
1374
1375 // If the corresponding selection was empty when this slice of the
1376 // clipboard text was written, then the entire line containing the
1377 // selection was copied. If this selection is also currently empty,
1378 // then paste the line before the current line of the buffer.
1379 let new_selection_start = selection.end.bias_right(buffer);
1380 if selection_start == selection_end && entire_line {
1381 let line_start = Point::new(selection_start.row, 0);
1382 buffer.edit(Some(line_start..line_start), to_insert, cx);
1383 } else {
1384 buffer.edit(Some(&selection.start..&selection.end), to_insert, cx);
1385 };
1386
1387 let new_selection_start = new_selection_start.bias_left(buffer);
1388 new_selections.push(Selection {
1389 id: selection.id,
1390 start: new_selection_start.clone(),
1391 end: new_selection_start,
1392 reversed: false,
1393 goal: SelectionGoal::None,
1394 });
1395 });
1396 }
1397 self.update_selections(new_selections, true, cx);
1398 } else {
1399 self.insert(clipboard_text, cx);
1400 }
1401 }
1402 }
1403
1404 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
1405 self.buffer.update(cx, |buffer, cx| buffer.undo(cx));
1406 }
1407
1408 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
1409 self.buffer.update(cx, |buffer, cx| buffer.redo(cx));
1410 }
1411
1412 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
1413 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1414 let mut selections = self.selections(cx).to_vec();
1415 {
1416 for selection in &mut selections {
1417 let start = selection.start.to_display_point(&display_map, Bias::Left);
1418 let end = selection.end.to_display_point(&display_map, Bias::Left);
1419
1420 if start != end {
1421 selection.end = selection.start.clone();
1422 } else {
1423 let cursor = display_map
1424 .anchor_before(movement::left(&display_map, start).unwrap(), Bias::Left);
1425 selection.start = cursor.clone();
1426 selection.end = cursor;
1427 }
1428 selection.reversed = false;
1429 selection.goal = SelectionGoal::None;
1430 }
1431 }
1432 self.update_selections(selections, true, cx);
1433 }
1434
1435 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
1436 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1437 let mut selections = self.selections(cx).to_vec();
1438 {
1439 let buffer = self.buffer.read(cx);
1440 for selection in &mut selections {
1441 let head = selection.head().to_display_point(&display_map, Bias::Left);
1442 let cursor = display_map
1443 .anchor_before(movement::left(&display_map, head).unwrap(), Bias::Left);
1444 selection.set_head(&buffer, cursor);
1445 selection.goal = SelectionGoal::None;
1446 }
1447 }
1448 self.update_selections(selections, true, cx);
1449 }
1450
1451 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
1452 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1453 let mut selections = self.selections(cx).to_vec();
1454 {
1455 for selection in &mut selections {
1456 let start = selection.start.to_display_point(&display_map, Bias::Left);
1457 let end = selection.end.to_display_point(&display_map, Bias::Left);
1458
1459 if start != end {
1460 selection.start = selection.end.clone();
1461 } else {
1462 let cursor = display_map
1463 .anchor_before(movement::right(&display_map, end).unwrap(), Bias::Right);
1464 selection.start = cursor.clone();
1465 selection.end = cursor;
1466 }
1467 selection.reversed = false;
1468 selection.goal = SelectionGoal::None;
1469 }
1470 }
1471 self.update_selections(selections, true, cx);
1472 }
1473
1474 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
1475 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1476 let mut selections = self.selections(cx).to_vec();
1477 {
1478 let app = cx.as_ref();
1479 let buffer = self.buffer.read(app);
1480 for selection in &mut selections {
1481 let head = selection.head().to_display_point(&display_map, Bias::Left);
1482 let cursor = display_map
1483 .anchor_before(movement::right(&display_map, head).unwrap(), Bias::Right);
1484 selection.set_head(&buffer, cursor);
1485 selection.goal = SelectionGoal::None;
1486 }
1487 }
1488 self.update_selections(selections, true, cx);
1489 }
1490
1491 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
1492 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1493 if matches!(self.mode, EditorMode::SingleLine) {
1494 cx.propagate_action();
1495 } else {
1496 let mut selections = self.selections(cx).to_vec();
1497 {
1498 for selection in &mut selections {
1499 let start = selection.start.to_display_point(&display_map, Bias::Left);
1500 let end = selection.end.to_display_point(&display_map, Bias::Left);
1501 if start != end {
1502 selection.goal = SelectionGoal::None;
1503 }
1504
1505 let (start, goal) = movement::up(&display_map, start, selection.goal).unwrap();
1506 let cursor = display_map.anchor_before(start, Bias::Left);
1507 selection.start = cursor.clone();
1508 selection.end = cursor;
1509 selection.goal = goal;
1510 selection.reversed = false;
1511 }
1512 }
1513 self.update_selections(selections, true, cx);
1514 }
1515 }
1516
1517 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
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 let app = cx.as_ref();
1522 let buffer = self.buffer.read(app);
1523 for selection in &mut selections {
1524 let head = selection.head().to_display_point(&display_map, Bias::Left);
1525 let (head, goal) = movement::up(&display_map, head, selection.goal).unwrap();
1526 selection.set_head(&buffer, display_map.anchor_before(head, Bias::Left));
1527 selection.goal = goal;
1528 }
1529 }
1530 self.update_selections(selections, true, cx);
1531 }
1532
1533 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
1534 if matches!(self.mode, EditorMode::SingleLine) {
1535 cx.propagate_action();
1536 } else {
1537 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1538 let mut selections = self.selections(cx).to_vec();
1539 {
1540 for selection in &mut selections {
1541 let start = selection.start.to_display_point(&display_map, Bias::Left);
1542 let end = selection.end.to_display_point(&display_map, Bias::Left);
1543 if start != end {
1544 selection.goal = SelectionGoal::None;
1545 }
1546
1547 let (start, goal) = movement::down(&display_map, end, selection.goal).unwrap();
1548 let cursor = display_map.anchor_before(start, Bias::Right);
1549 selection.start = cursor.clone();
1550 selection.end = cursor;
1551 selection.goal = goal;
1552 selection.reversed = false;
1553 }
1554 }
1555 self.update_selections(selections, true, cx);
1556 }
1557 }
1558
1559 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
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 app = cx.as_ref();
1564 let buffer = self.buffer.read(app);
1565 for selection in &mut selections {
1566 let head = selection.head().to_display_point(&display_map, Bias::Left);
1567 let (head, goal) = movement::down(&display_map, head, selection.goal).unwrap();
1568 selection.set_head(&buffer, display_map.anchor_before(head, Bias::Right));
1569 selection.goal = goal;
1570 }
1571 }
1572 self.update_selections(selections, true, cx);
1573 }
1574
1575 pub fn move_to_previous_word_boundary(
1576 &mut self,
1577 _: &MoveToPreviousWordBoundary,
1578 cx: &mut ViewContext<Self>,
1579 ) {
1580 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1581 let mut selections = self.selections(cx).to_vec();
1582 {
1583 for selection in &mut selections {
1584 let head = selection.head().to_display_point(&display_map, Bias::Left);
1585 let new_head = movement::prev_word_boundary(&display_map, head).unwrap();
1586 let anchor = display_map.anchor_before(new_head, Bias::Left);
1587 selection.start = anchor.clone();
1588 selection.end = anchor;
1589 selection.reversed = false;
1590 selection.goal = SelectionGoal::None;
1591 }
1592 }
1593 self.update_selections(selections, true, cx);
1594 }
1595
1596 pub fn select_to_previous_word_boundary(
1597 &mut self,
1598 _: &SelectToPreviousWordBoundary,
1599 cx: &mut ViewContext<Self>,
1600 ) {
1601 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1602 let mut selections = self.selections(cx).to_vec();
1603 {
1604 let buffer = self.buffer.read(cx);
1605 for selection in &mut selections {
1606 let head = selection.head().to_display_point(&display_map, Bias::Left);
1607 let new_head = movement::prev_word_boundary(&display_map, head).unwrap();
1608 let anchor = display_map.anchor_before(new_head, Bias::Left);
1609 selection.set_head(buffer, anchor);
1610 selection.goal = SelectionGoal::None;
1611 }
1612 }
1613 self.update_selections(selections, true, cx);
1614 }
1615
1616 pub fn delete_to_previous_word_boundary(
1617 &mut self,
1618 _: &DeleteToPreviousWordBoundary,
1619 cx: &mut ViewContext<Self>,
1620 ) {
1621 self.start_transaction(cx);
1622 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1623 let mut selections = self.selections(cx).to_vec();
1624 {
1625 let buffer = self.buffer.read(cx);
1626 for selection in &mut selections {
1627 let range = selection.point_range(buffer);
1628 if range.start == range.end {
1629 let head = selection.head().to_display_point(&display_map, Bias::Left);
1630 let cursor = display_map.anchor_before(
1631 movement::prev_word_boundary(&display_map, head).unwrap(),
1632 Bias::Right,
1633 );
1634 selection.set_head(&buffer, cursor);
1635 selection.goal = SelectionGoal::None;
1636 }
1637 }
1638 }
1639
1640 self.update_selections(selections, true, cx);
1641 self.insert("", cx);
1642 self.end_transaction(cx);
1643 }
1644
1645 pub fn move_to_next_word_boundary(
1646 &mut self,
1647 _: &MoveToNextWordBoundary,
1648 cx: &mut ViewContext<Self>,
1649 ) {
1650 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1651 let mut selections = self.selections(cx).to_vec();
1652 {
1653 for selection in &mut selections {
1654 let head = selection.head().to_display_point(&display_map, Bias::Left);
1655 let new_head = movement::next_word_boundary(&display_map, head).unwrap();
1656 let anchor = display_map.anchor_before(new_head, Bias::Left);
1657 selection.start = anchor.clone();
1658 selection.end = anchor;
1659 selection.reversed = false;
1660 selection.goal = SelectionGoal::None;
1661 }
1662 }
1663 self.update_selections(selections, true, cx);
1664 }
1665
1666 pub fn select_to_next_word_boundary(
1667 &mut self,
1668 _: &SelectToNextWordBoundary,
1669 cx: &mut ViewContext<Self>,
1670 ) {
1671 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1672 let mut selections = self.selections(cx).to_vec();
1673 {
1674 let buffer = self.buffer.read(cx);
1675 for selection in &mut selections {
1676 let head = selection.head().to_display_point(&display_map, Bias::Left);
1677 let new_head = movement::next_word_boundary(&display_map, head).unwrap();
1678 let anchor = display_map.anchor_before(new_head, Bias::Left);
1679 selection.set_head(buffer, anchor);
1680 selection.goal = SelectionGoal::None;
1681 }
1682 }
1683 self.update_selections(selections, true, cx);
1684 }
1685
1686 pub fn delete_to_next_word_boundary(
1687 &mut self,
1688 _: &DeleteToNextWordBoundary,
1689 cx: &mut ViewContext<Self>,
1690 ) {
1691 self.start_transaction(cx);
1692 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1693 let mut selections = self.selections(cx).to_vec();
1694 {
1695 let buffer = self.buffer.read(cx);
1696 for selection in &mut selections {
1697 let range = selection.point_range(buffer);
1698 if range.start == range.end {
1699 let head = selection.head().to_display_point(&display_map, Bias::Left);
1700 let cursor = display_map.anchor_before(
1701 movement::next_word_boundary(&display_map, head).unwrap(),
1702 Bias::Right,
1703 );
1704 selection.set_head(&buffer, cursor);
1705 selection.goal = SelectionGoal::None;
1706 }
1707 }
1708 }
1709
1710 self.update_selections(selections, true, cx);
1711 self.insert("", cx);
1712 self.end_transaction(cx);
1713 }
1714
1715 pub fn move_to_beginning_of_line(
1716 &mut self,
1717 _: &MoveToBeginningOfLine,
1718 cx: &mut ViewContext<Self>,
1719 ) {
1720 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1721 let mut selections = self.selections(cx).to_vec();
1722 {
1723 for selection in &mut selections {
1724 let head = selection.head().to_display_point(&display_map, Bias::Left);
1725 let new_head = movement::line_beginning(&display_map, head, true).unwrap();
1726 let anchor = display_map.anchor_before(new_head, Bias::Left);
1727 selection.start = anchor.clone();
1728 selection.end = anchor;
1729 selection.reversed = false;
1730 selection.goal = SelectionGoal::None;
1731 }
1732 }
1733 self.update_selections(selections, true, cx);
1734 }
1735
1736 pub fn select_to_beginning_of_line(
1737 &mut self,
1738 SelectToBeginningOfLine(toggle_indent): &SelectToBeginningOfLine,
1739 cx: &mut ViewContext<Self>,
1740 ) {
1741 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1742 let mut selections = self.selections(cx).to_vec();
1743 {
1744 let buffer = self.buffer.read(cx);
1745 for selection in &mut selections {
1746 let head = selection.head().to_display_point(&display_map, Bias::Left);
1747 let new_head =
1748 movement::line_beginning(&display_map, head, *toggle_indent).unwrap();
1749 let anchor = display_map.anchor_before(new_head, Bias::Left);
1750 selection.set_head(buffer, anchor);
1751 selection.goal = SelectionGoal::None;
1752 }
1753 }
1754 self.update_selections(selections, true, cx);
1755 }
1756
1757 pub fn delete_to_beginning_of_line(
1758 &mut self,
1759 _: &DeleteToBeginningOfLine,
1760 cx: &mut ViewContext<Self>,
1761 ) {
1762 self.start_transaction(cx);
1763 self.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
1764 self.backspace(&Backspace, cx);
1765 self.end_transaction(cx);
1766 }
1767
1768 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
1769 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1770 let mut selections = self.selections(cx).to_vec();
1771 {
1772 for selection in &mut selections {
1773 let head = selection.head().to_display_point(&display_map, Bias::Left);
1774 let new_head = movement::line_end(&display_map, head).unwrap();
1775 let anchor = display_map.anchor_before(new_head, Bias::Left);
1776 selection.start = anchor.clone();
1777 selection.end = anchor;
1778 selection.reversed = false;
1779 selection.goal = SelectionGoal::None;
1780 }
1781 }
1782 self.update_selections(selections, true, cx);
1783 }
1784
1785 pub fn select_to_end_of_line(&mut self, _: &SelectToEndOfLine, cx: &mut ViewContext<Self>) {
1786 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1787 let mut selections = self.selections(cx).to_vec();
1788 {
1789 let buffer = self.buffer.read(cx);
1790 for selection in &mut selections {
1791 let head = selection.head().to_display_point(&display_map, Bias::Left);
1792 let new_head = movement::line_end(&display_map, head).unwrap();
1793 let anchor = display_map.anchor_before(new_head, Bias::Left);
1794 selection.set_head(buffer, anchor);
1795 selection.goal = SelectionGoal::None;
1796 }
1797 }
1798 self.update_selections(selections, true, cx);
1799 }
1800
1801 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
1802 self.start_transaction(cx);
1803 self.select_to_end_of_line(&SelectToEndOfLine, cx);
1804 self.delete(&Delete, cx);
1805 self.end_transaction(cx);
1806 }
1807
1808 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
1809 self.start_transaction(cx);
1810 self.select_to_end_of_line(&SelectToEndOfLine, cx);
1811 self.cut(&Cut, cx);
1812 self.end_transaction(cx);
1813 }
1814
1815 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
1816 let buffer = self.buffer.read(cx);
1817 let cursor = buffer.anchor_before(Point::new(0, 0));
1818 let selection = Selection {
1819 id: post_inc(&mut self.next_selection_id),
1820 start: cursor.clone(),
1821 end: cursor,
1822 reversed: false,
1823 goal: SelectionGoal::None,
1824 };
1825 self.update_selections(vec![selection], true, cx);
1826 }
1827
1828 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
1829 let mut selection = self.selections(cx).last().unwrap().clone();
1830 selection.set_head(self.buffer.read(cx), Anchor::min());
1831 self.update_selections(vec![selection], true, cx);
1832 }
1833
1834 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
1835 let buffer = self.buffer.read(cx);
1836 let cursor = buffer.anchor_before(buffer.max_point());
1837 let selection = Selection {
1838 id: post_inc(&mut self.next_selection_id),
1839 start: cursor.clone(),
1840 end: cursor,
1841 reversed: false,
1842 goal: SelectionGoal::None,
1843 };
1844 self.update_selections(vec![selection], true, cx);
1845 }
1846
1847 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
1848 let mut selection = self.selections(cx).last().unwrap().clone();
1849 selection.set_head(self.buffer.read(cx), Anchor::max());
1850 self.update_selections(vec![selection], true, cx);
1851 }
1852
1853 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
1854 let selection = Selection {
1855 id: post_inc(&mut self.next_selection_id),
1856 start: Anchor::min(),
1857 end: Anchor::max(),
1858 reversed: false,
1859 goal: SelectionGoal::None,
1860 };
1861 self.update_selections(vec![selection], false, cx);
1862 }
1863
1864 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
1865 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1866 let mut selections = self.selections(cx).to_vec();
1867 let buffer = self.buffer.read(cx);
1868 let max_point = buffer.max_point();
1869 for selection in &mut selections {
1870 let rows = selection.spanned_rows(true, &display_map).buffer_rows;
1871 selection.start = buffer.anchor_before(Point::new(rows.start, 0));
1872 selection.end = buffer.anchor_before(cmp::min(max_point, Point::new(rows.end, 0)));
1873 selection.reversed = false;
1874 }
1875 self.update_selections(selections, true, cx);
1876 }
1877
1878 pub fn split_selection_into_lines(
1879 &mut self,
1880 _: &SplitSelectionIntoLines,
1881 cx: &mut ViewContext<Self>,
1882 ) {
1883 let selections = self.selections(cx);
1884 let buffer = self.buffer.read(cx);
1885
1886 let mut to_unfold = Vec::new();
1887 let mut new_selections = Vec::new();
1888 for selection in selections.iter() {
1889 let range = selection.point_range(buffer).sorted();
1890 if range.start.row != range.end.row {
1891 new_selections.push(Selection {
1892 id: post_inc(&mut self.next_selection_id),
1893 start: selection.start.clone(),
1894 end: selection.start.clone(),
1895 reversed: false,
1896 goal: SelectionGoal::None,
1897 });
1898 }
1899 for row in range.start.row + 1..range.end.row {
1900 let cursor = buffer.anchor_before(Point::new(row, buffer.line_len(row)));
1901 new_selections.push(Selection {
1902 id: post_inc(&mut self.next_selection_id),
1903 start: cursor.clone(),
1904 end: cursor,
1905 reversed: false,
1906 goal: SelectionGoal::None,
1907 });
1908 }
1909 new_selections.push(Selection {
1910 id: selection.id,
1911 start: selection.end.clone(),
1912 end: selection.end.clone(),
1913 reversed: false,
1914 goal: SelectionGoal::None,
1915 });
1916 to_unfold.push(range);
1917 }
1918 self.unfold_ranges(to_unfold, cx);
1919 self.update_selections(new_selections, true, cx);
1920 }
1921
1922 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
1923 self.add_selection(true, cx);
1924 }
1925
1926 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
1927 self.add_selection(false, cx);
1928 }
1929
1930 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
1931 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1932 let mut selections = self.selections(cx).to_vec();
1933 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
1934 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
1935 let range = oldest_selection.display_range(&display_map).sorted();
1936 let columns = cmp::min(range.start.column(), range.end.column())
1937 ..cmp::max(range.start.column(), range.end.column());
1938
1939 selections.clear();
1940 let mut stack = Vec::new();
1941 for row in range.start.row()..=range.end.row() {
1942 if let Some(selection) = self.build_columnar_selection(
1943 &display_map,
1944 row,
1945 &columns,
1946 oldest_selection.reversed,
1947 ) {
1948 stack.push(selection.id);
1949 selections.push(selection);
1950 }
1951 }
1952
1953 if above {
1954 stack.reverse();
1955 }
1956
1957 AddSelectionsState { above, stack }
1958 });
1959
1960 let last_added_selection = *state.stack.last().unwrap();
1961 let mut new_selections = Vec::new();
1962 if above == state.above {
1963 let end_row = if above {
1964 0
1965 } else {
1966 display_map.max_point().row()
1967 };
1968
1969 'outer: for selection in selections {
1970 if selection.id == last_added_selection {
1971 let range = selection.display_range(&display_map).sorted();
1972 debug_assert_eq!(range.start.row(), range.end.row());
1973 let mut row = range.start.row();
1974 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
1975 {
1976 start..end
1977 } else {
1978 cmp::min(range.start.column(), range.end.column())
1979 ..cmp::max(range.start.column(), range.end.column())
1980 };
1981
1982 while row != end_row {
1983 if above {
1984 row -= 1;
1985 } else {
1986 row += 1;
1987 }
1988
1989 if let Some(new_selection) = self.build_columnar_selection(
1990 &display_map,
1991 row,
1992 &columns,
1993 selection.reversed,
1994 ) {
1995 state.stack.push(new_selection.id);
1996 if above {
1997 new_selections.push(new_selection);
1998 new_selections.push(selection);
1999 } else {
2000 new_selections.push(selection);
2001 new_selections.push(new_selection);
2002 }
2003
2004 continue 'outer;
2005 }
2006 }
2007 }
2008
2009 new_selections.push(selection);
2010 }
2011 } else {
2012 new_selections = selections;
2013 new_selections.retain(|s| s.id != last_added_selection);
2014 state.stack.pop();
2015 }
2016
2017 self.update_selections(new_selections, true, cx);
2018 if state.stack.len() > 1 {
2019 self.add_selections_state = Some(state);
2020 }
2021 }
2022
2023 pub fn select_larger_syntax_node(
2024 &mut self,
2025 _: &SelectLargerSyntaxNode,
2026 cx: &mut ViewContext<Self>,
2027 ) {
2028 let old_selections = self.selections(cx);
2029 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2030 let buffer = self.buffer.read(cx);
2031
2032 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
2033 let mut selected_larger_node = false;
2034 let mut new_selection_ranges = Vec::new();
2035 for selection in old_selections.iter() {
2036 let old_range = selection.start.to_offset(buffer)..selection.end.to_offset(buffer);
2037 let mut new_range = old_range.clone();
2038 while let Some(containing_range) = buffer.range_for_syntax_ancestor(new_range.clone()) {
2039 new_range = containing_range;
2040 if !display_map.intersects_fold(new_range.start)
2041 && !display_map.intersects_fold(new_range.end)
2042 {
2043 break;
2044 }
2045 }
2046
2047 selected_larger_node |= new_range != old_range;
2048 new_selection_ranges.push((selection.id, new_range, selection.reversed));
2049 }
2050
2051 if selected_larger_node {
2052 stack.push(old_selections);
2053 new_selection_ranges.sort_unstable_by_key(|(_, range, _)| range.start.clone());
2054 let new_selections = new_selection_ranges
2055 .into_iter()
2056 .map(|(id, range, reversed)| Selection {
2057 id,
2058 start: buffer.anchor_before(range.start),
2059 end: buffer.anchor_before(range.end),
2060 reversed,
2061 goal: SelectionGoal::None,
2062 })
2063 .collect();
2064 self.update_selections(new_selections, true, cx);
2065 }
2066 self.select_larger_syntax_node_stack = stack;
2067 }
2068
2069 pub fn select_smaller_syntax_node(
2070 &mut self,
2071 _: &SelectSmallerSyntaxNode,
2072 cx: &mut ViewContext<Self>,
2073 ) {
2074 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
2075 if let Some(selections) = stack.pop() {
2076 self.update_selections(selections.to_vec(), true, cx);
2077 }
2078 self.select_larger_syntax_node_stack = stack;
2079 }
2080
2081 pub fn move_to_enclosing_bracket(
2082 &mut self,
2083 _: &MoveToEnclosingBracket,
2084 cx: &mut ViewContext<Self>,
2085 ) {
2086 let mut selections = self.selections(cx).to_vec();
2087 let buffer = self.buffer.read(cx.as_ref());
2088 for selection in &mut selections {
2089 let selection_range = selection.offset_range(buffer);
2090 if let Some((open_range, close_range)) =
2091 buffer.enclosing_bracket_ranges(selection_range.clone())
2092 {
2093 let close_range = close_range.to_inclusive();
2094 let destination = if close_range.contains(&selection_range.start)
2095 && close_range.contains(&selection_range.end)
2096 {
2097 open_range.end
2098 } else {
2099 *close_range.start()
2100 };
2101 selection.start = buffer.anchor_before(destination);
2102 selection.end = selection.start.clone();
2103 }
2104 }
2105
2106 self.update_selections(selections, true, cx);
2107 }
2108
2109 fn build_columnar_selection(
2110 &mut self,
2111 display_map: &DisplayMapSnapshot,
2112 row: u32,
2113 columns: &Range<u32>,
2114 reversed: bool,
2115 ) -> Option<Selection> {
2116 let is_empty = columns.start == columns.end;
2117 let line_len = display_map.line_len(row);
2118 if columns.start < line_len || (is_empty && columns.start == line_len) {
2119 let start = DisplayPoint::new(row, columns.start);
2120 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
2121 Some(Selection {
2122 id: post_inc(&mut self.next_selection_id),
2123 start: display_map.anchor_before(start, Bias::Left),
2124 end: display_map.anchor_before(end, Bias::Left),
2125 reversed,
2126 goal: SelectionGoal::ColumnRange {
2127 start: columns.start,
2128 end: columns.end,
2129 },
2130 })
2131 } else {
2132 None
2133 }
2134 }
2135
2136 pub fn active_selection_sets<'a>(
2137 &'a self,
2138 cx: &'a AppContext,
2139 ) -> impl 'a + Iterator<Item = SelectionSetId> {
2140 let buffer = self.buffer.read(cx);
2141 let replica_id = buffer.replica_id();
2142 buffer
2143 .selection_sets()
2144 .filter(move |(set_id, set)| {
2145 set.active && (set_id.replica_id != replica_id || **set_id == self.selection_set_id)
2146 })
2147 .map(|(set_id, _)| *set_id)
2148 }
2149
2150 pub fn selections_in_range<'a>(
2151 &'a self,
2152 set_id: SelectionSetId,
2153 range: Range<DisplayPoint>,
2154 cx: &'a mut MutableAppContext,
2155 ) -> impl 'a + Iterator<Item = Range<DisplayPoint>> {
2156 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2157 let buffer = self.buffer.read(cx);
2158 let selections = &buffer.selection_set(set_id).unwrap().selections;
2159 let start = display_map.anchor_before(range.start, Bias::Left);
2160 let start_index = self.selection_insertion_index(selections, &start, cx);
2161 let pending_selection = if set_id.replica_id == self.buffer.read(cx).replica_id() {
2162 self.pending_selection.as_ref().and_then(|s| {
2163 let selection_range = s.display_range(&display_map);
2164 if selection_range.start <= range.end || selection_range.end <= range.end {
2165 Some(selection_range)
2166 } else {
2167 None
2168 }
2169 })
2170 } else {
2171 None
2172 };
2173 selections[start_index..]
2174 .iter()
2175 .map(move |s| s.display_range(&display_map))
2176 .take_while(move |r| r.start <= range.end || r.end <= range.end)
2177 .chain(pending_selection)
2178 }
2179
2180 fn selection_insertion_index(
2181 &self,
2182 selections: &[Selection],
2183 start: &Anchor,
2184 cx: &AppContext,
2185 ) -> usize {
2186 let buffer = self.buffer.read(cx);
2187 match selections.binary_search_by(|probe| probe.start.cmp(&start, buffer).unwrap()) {
2188 Ok(index) => index,
2189 Err(index) => {
2190 if index > 0
2191 && selections[index - 1].end.cmp(&start, buffer).unwrap() == Ordering::Greater
2192 {
2193 index - 1
2194 } else {
2195 index
2196 }
2197 }
2198 }
2199 }
2200
2201 fn selections(&mut self, cx: &mut ViewContext<Self>) -> Arc<[Selection]> {
2202 self.end_selection(cx);
2203 let buffer = self.buffer.read(cx);
2204 buffer
2205 .selection_set(self.selection_set_id)
2206 .unwrap()
2207 .selections
2208 .clone()
2209 }
2210
2211 fn update_selections(
2212 &mut self,
2213 mut selections: Vec<Selection>,
2214 autoscroll: bool,
2215 cx: &mut ViewContext<Self>,
2216 ) {
2217 // Merge overlapping selections.
2218 let buffer = self.buffer.read(cx);
2219 let mut i = 1;
2220 while i < selections.len() {
2221 if selections[i - 1]
2222 .end
2223 .cmp(&selections[i].start, buffer)
2224 .unwrap()
2225 >= Ordering::Equal
2226 {
2227 let removed = selections.remove(i);
2228 if removed.start.cmp(&selections[i - 1].start, buffer).unwrap() < Ordering::Equal {
2229 selections[i - 1].start = removed.start;
2230 }
2231 if removed.end.cmp(&selections[i - 1].end, buffer).unwrap() > Ordering::Equal {
2232 selections[i - 1].end = removed.end;
2233 }
2234 } else {
2235 i += 1;
2236 }
2237 }
2238
2239 self.add_selections_state = None;
2240 self.select_larger_syntax_node_stack.clear();
2241 while let Some(autoclose_pair_state) = self.autoclose_stack.last() {
2242 let all_selections_inside_autoclose_ranges =
2243 if selections.len() == autoclose_pair_state.ranges.len() {
2244 selections.iter().zip(&autoclose_pair_state.ranges).all(
2245 |(selection, autoclose_range)| {
2246 let head = selection.head();
2247 autoclose_range.start.cmp(head, buffer).unwrap() <= Ordering::Equal
2248 && autoclose_range.end.cmp(head, buffer).unwrap() >= Ordering::Equal
2249 },
2250 )
2251 } else {
2252 false
2253 };
2254
2255 if all_selections_inside_autoclose_ranges {
2256 break;
2257 } else {
2258 self.autoclose_stack.pop();
2259 }
2260 }
2261
2262 if autoscroll {
2263 self.autoscroll_requested = true;
2264 cx.notify();
2265 }
2266
2267 self.pause_cursor_blinking(cx);
2268
2269 self.buffer.update(cx, |buffer, cx| {
2270 buffer
2271 .update_selection_set(self.selection_set_id, selections, cx)
2272 .unwrap();
2273 });
2274 }
2275
2276 fn start_transaction(&self, cx: &mut ViewContext<Self>) {
2277 self.buffer.update(cx, |buffer, _| {
2278 buffer
2279 .start_transaction(Some(self.selection_set_id))
2280 .unwrap()
2281 });
2282 }
2283
2284 fn end_transaction(&self, cx: &mut ViewContext<Self>) {
2285 self.buffer.update(cx, |buffer, cx| {
2286 buffer
2287 .end_transaction(Some(self.selection_set_id), cx)
2288 .unwrap()
2289 });
2290 }
2291
2292 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
2293 log::info!("Editor::page_up");
2294 }
2295
2296 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
2297 log::info!("Editor::page_down");
2298 }
2299
2300 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
2301 let mut fold_ranges = Vec::new();
2302
2303 let selections = self.selections(cx);
2304 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2305 for selection in selections.iter() {
2306 let range = selection.display_range(&display_map).sorted();
2307 let buffer_start_row = range.start.to_buffer_point(&display_map, Bias::Left).row;
2308
2309 for row in (0..=range.end.row()).rev() {
2310 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
2311 let fold_range = self.foldable_range_for_line(&display_map, row);
2312 if fold_range.end.row >= buffer_start_row {
2313 fold_ranges.push(fold_range);
2314 if row <= range.start.row() {
2315 break;
2316 }
2317 }
2318 }
2319 }
2320 }
2321
2322 self.fold_ranges(fold_ranges, cx);
2323 }
2324
2325 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
2326 let selections = self.selections(cx);
2327 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2328 let buffer = self.buffer.read(cx);
2329 let ranges = selections
2330 .iter()
2331 .map(|s| {
2332 let range = s.display_range(&display_map).sorted();
2333 let mut start = range.start.to_buffer_point(&display_map, Bias::Left);
2334 let mut end = range.end.to_buffer_point(&display_map, Bias::Left);
2335 start.column = 0;
2336 end.column = buffer.line_len(end.row);
2337 start..end
2338 })
2339 .collect::<Vec<_>>();
2340 self.unfold_ranges(ranges, cx);
2341 }
2342
2343 fn is_line_foldable(&self, display_map: &DisplayMapSnapshot, display_row: u32) -> bool {
2344 let max_point = display_map.max_point();
2345 if display_row >= max_point.row() {
2346 false
2347 } else {
2348 let (start_indent, is_blank) = display_map.line_indent(display_row);
2349 if is_blank {
2350 false
2351 } else {
2352 for display_row in display_row + 1..=max_point.row() {
2353 let (indent, is_blank) = display_map.line_indent(display_row);
2354 if !is_blank {
2355 return indent > start_indent;
2356 }
2357 }
2358 false
2359 }
2360 }
2361 }
2362
2363 fn foldable_range_for_line(
2364 &self,
2365 display_map: &DisplayMapSnapshot,
2366 start_row: u32,
2367 ) -> Range<Point> {
2368 let max_point = display_map.max_point();
2369
2370 let (start_indent, _) = display_map.line_indent(start_row);
2371 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
2372 let mut end = None;
2373 for row in start_row + 1..=max_point.row() {
2374 let (indent, is_blank) = display_map.line_indent(row);
2375 if !is_blank && indent <= start_indent {
2376 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
2377 break;
2378 }
2379 }
2380
2381 let end = end.unwrap_or(max_point);
2382 return start.to_buffer_point(display_map, Bias::Left)
2383 ..end.to_buffer_point(display_map, Bias::Left);
2384 }
2385
2386 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
2387 let selections = self.selections(cx);
2388 let buffer = self.buffer.read(cx);
2389 let ranges = selections
2390 .iter()
2391 .map(|s| s.point_range(buffer).sorted())
2392 .collect();
2393 self.fold_ranges(ranges, cx);
2394 }
2395
2396 fn fold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
2397 if !ranges.is_empty() {
2398 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
2399 self.autoscroll_requested = true;
2400 cx.notify();
2401 }
2402 }
2403
2404 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
2405 if !ranges.is_empty() {
2406 self.display_map
2407 .update(cx, |map, cx| map.unfold(ranges, cx));
2408 self.autoscroll_requested = true;
2409 cx.notify();
2410 }
2411 }
2412
2413 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
2414 self.display_map
2415 .update(cx, |map, cx| map.snapshot(cx))
2416 .longest_row()
2417 }
2418
2419 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
2420 self.display_map
2421 .update(cx, |map, cx| map.snapshot(cx))
2422 .max_point()
2423 }
2424
2425 pub fn text(&self, cx: &AppContext) -> String {
2426 self.buffer.read(cx).text()
2427 }
2428
2429 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
2430 self.display_map
2431 .update(cx, |map, cx| map.snapshot(cx))
2432 .text()
2433 }
2434
2435 // pub fn font_size(&self) -> f32 {
2436 // self.settings.font_size
2437 // }
2438
2439 pub fn set_wrap_width(&self, width: f32, cx: &mut MutableAppContext) -> bool {
2440 self.display_map
2441 .update(cx, |map, cx| map.set_wrap_width(Some(width), cx))
2442 }
2443
2444 fn next_blink_epoch(&mut self) -> usize {
2445 self.blink_epoch += 1;
2446 self.blink_epoch
2447 }
2448
2449 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
2450 self.show_local_cursors = true;
2451 cx.notify();
2452
2453 let epoch = self.next_blink_epoch();
2454 cx.spawn(|this, mut cx| {
2455 let this = this.downgrade();
2456 async move {
2457 Timer::after(CURSOR_BLINK_INTERVAL).await;
2458 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
2459 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
2460 }
2461 }
2462 })
2463 .detach();
2464 }
2465
2466 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
2467 if epoch == self.blink_epoch {
2468 self.blinking_paused = false;
2469 self.blink_cursors(epoch, cx);
2470 }
2471 }
2472
2473 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
2474 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
2475 self.show_local_cursors = !self.show_local_cursors;
2476 cx.notify();
2477
2478 let epoch = self.next_blink_epoch();
2479 cx.spawn(|this, mut cx| {
2480 let this = this.downgrade();
2481 async move {
2482 Timer::after(CURSOR_BLINK_INTERVAL).await;
2483 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
2484 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
2485 }
2486 }
2487 })
2488 .detach();
2489 }
2490 }
2491
2492 pub fn show_local_cursors(&self) -> bool {
2493 self.show_local_cursors
2494 }
2495
2496 fn on_buffer_changed(&mut self, _: ModelHandle<Buffer>, cx: &mut ViewContext<Self>) {
2497 cx.notify();
2498 }
2499
2500 fn on_buffer_event(
2501 &mut self,
2502 _: ModelHandle<Buffer>,
2503 event: &buffer::Event,
2504 cx: &mut ViewContext<Self>,
2505 ) {
2506 match event {
2507 buffer::Event::Edited => cx.emit(Event::Edited),
2508 buffer::Event::Dirtied => cx.emit(Event::Dirtied),
2509 buffer::Event::Saved => cx.emit(Event::Saved),
2510 buffer::Event::FileHandleChanged => cx.emit(Event::FileHandleChanged),
2511 buffer::Event::Reloaded => cx.emit(Event::FileHandleChanged),
2512 buffer::Event::Closed => cx.emit(Event::Closed),
2513 buffer::Event::Reparsed => {}
2514 }
2515 }
2516
2517 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
2518 cx.notify();
2519 }
2520}
2521
2522impl Snapshot {
2523 pub fn is_empty(&self) -> bool {
2524 self.display_snapshot.is_empty()
2525 }
2526
2527 pub fn is_focused(&self) -> bool {
2528 self.is_focused
2529 }
2530
2531 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
2532 self.placeholder_text.as_ref()
2533 }
2534
2535 pub fn buffer_row_count(&self) -> u32 {
2536 self.display_snapshot.buffer_row_count()
2537 }
2538
2539 pub fn buffer_rows(&self, start_row: u32) -> BufferRows {
2540 self.display_snapshot.buffer_rows(start_row)
2541 }
2542
2543 pub fn highlighted_chunks_for_rows(
2544 &mut self,
2545 display_rows: Range<u32>,
2546 ) -> display_map::HighlightedChunks {
2547 self.display_snapshot
2548 .highlighted_chunks_for_rows(display_rows)
2549 }
2550
2551 pub fn scroll_position(&self) -> Vector2F {
2552 compute_scroll_position(
2553 &self.display_snapshot,
2554 self.scroll_position,
2555 &self.scroll_top_anchor,
2556 )
2557 }
2558
2559 pub fn max_point(&self) -> DisplayPoint {
2560 self.display_snapshot.max_point()
2561 }
2562
2563 pub fn longest_row(&self) -> u32 {
2564 self.display_snapshot.longest_row()
2565 }
2566
2567 pub fn line_len(&self, display_row: u32) -> u32 {
2568 self.display_snapshot.line_len(display_row)
2569 }
2570
2571 pub fn line(&self, display_row: u32) -> String {
2572 self.display_snapshot.line(display_row)
2573 }
2574
2575 pub fn prev_row_boundary(&self, point: DisplayPoint) -> (DisplayPoint, Point) {
2576 self.display_snapshot.prev_row_boundary(point)
2577 }
2578
2579 pub fn next_row_boundary(&self, point: DisplayPoint) -> (DisplayPoint, Point) {
2580 self.display_snapshot.next_row_boundary(point)
2581 }
2582}
2583
2584impl EditorSettings {
2585 #[cfg(any(test, feature = "test-support"))]
2586 pub fn test(cx: &AppContext) -> Self {
2587 Self {
2588 tab_size: 4,
2589 style: {
2590 let font_cache: &gpui::FontCache = cx.font_cache();
2591 let font_family_name = Arc::from("Monaco");
2592 let font_properties = Default::default();
2593 let font_family_id = font_cache.load_family(&[&font_family_name]).unwrap();
2594 let font_id = font_cache
2595 .select_font(font_family_id, &font_properties)
2596 .unwrap();
2597 EditorStyle {
2598 text: TextStyle {
2599 font_family_name,
2600 font_family_id,
2601 font_id,
2602 font_size: 14.,
2603 color: Color::from_u32(0xff0000ff),
2604 font_properties,
2605 underline: false,
2606 },
2607 placeholder_text: None,
2608 background: Default::default(),
2609 gutter_background: Default::default(),
2610 active_line_background: Default::default(),
2611 line_number: Default::default(),
2612 line_number_active: Default::default(),
2613 selection: Default::default(),
2614 guest_selections: Default::default(),
2615 syntax: Default::default(),
2616 }
2617 },
2618 }
2619 }
2620}
2621
2622fn compute_scroll_position(
2623 snapshot: &DisplayMapSnapshot,
2624 mut scroll_position: Vector2F,
2625 scroll_top_anchor: &Anchor,
2626) -> Vector2F {
2627 let scroll_top = scroll_top_anchor
2628 .to_display_point(snapshot, Bias::Left)
2629 .row() as f32;
2630 scroll_position.set_y(scroll_top + scroll_position.y());
2631 scroll_position
2632}
2633
2634pub enum Event {
2635 Activate,
2636 Edited,
2637 Blurred,
2638 Dirtied,
2639 Saved,
2640 FileHandleChanged,
2641 Closed,
2642}
2643
2644impl Entity for Editor {
2645 type Event = Event;
2646
2647 fn release(&mut self, cx: &mut MutableAppContext) {
2648 self.buffer.update(cx, |buffer, cx| {
2649 buffer
2650 .remove_selection_set(self.selection_set_id, cx)
2651 .unwrap();
2652 });
2653 }
2654}
2655
2656impl View for Editor {
2657 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
2658 let settings = self.build_settings.borrow_mut()(cx);
2659 self.display_map.update(cx, |map, cx| {
2660 map.set_font(
2661 settings.style.text.font_id,
2662 settings.style.text.font_size,
2663 cx,
2664 )
2665 });
2666 EditorElement::new(self.handle.clone(), settings).boxed()
2667 }
2668
2669 fn ui_name() -> &'static str {
2670 "Editor"
2671 }
2672
2673 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
2674 self.focused = true;
2675 self.blink_cursors(self.blink_epoch, cx);
2676 self.buffer.update(cx, |buffer, cx| {
2677 buffer
2678 .set_active_selection_set(Some(self.selection_set_id), cx)
2679 .unwrap();
2680 });
2681 }
2682
2683 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
2684 self.focused = false;
2685 self.show_local_cursors = false;
2686 self.buffer.update(cx, |buffer, cx| {
2687 buffer.set_active_selection_set(None, cx).unwrap();
2688 });
2689 cx.emit(Event::Blurred);
2690 cx.notify();
2691 }
2692
2693 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
2694 let mut cx = Self::default_keymap_context();
2695 let mode = match self.mode {
2696 EditorMode::SingleLine => "single_line",
2697 EditorMode::AutoHeight { .. } => "auto_height",
2698 EditorMode::Full => "full",
2699 };
2700 cx.map.insert("mode".into(), mode.into());
2701 cx
2702 }
2703}
2704
2705impl SelectionExt for Selection {
2706 fn display_range(&self, map: &DisplayMapSnapshot) -> Range<DisplayPoint> {
2707 let start = self.start.to_display_point(map, Bias::Left);
2708 let end = self.end.to_display_point(map, Bias::Left);
2709 if self.reversed {
2710 end..start
2711 } else {
2712 start..end
2713 }
2714 }
2715
2716 fn spanned_rows(
2717 &self,
2718 include_end_if_at_line_start: bool,
2719 map: &DisplayMapSnapshot,
2720 ) -> SpannedRows {
2721 let display_start = self.start.to_display_point(map, Bias::Left);
2722 let mut display_end = self.end.to_display_point(map, Bias::Right);
2723 if !include_end_if_at_line_start
2724 && display_end.row() != map.max_point().row()
2725 && display_start.row() != display_end.row()
2726 && display_end.column() == 0
2727 {
2728 *display_end.row_mut() -= 1;
2729 }
2730
2731 let (display_start, buffer_start) = map.prev_row_boundary(display_start);
2732 let (display_end, buffer_end) = map.next_row_boundary(display_end);
2733
2734 SpannedRows {
2735 buffer_rows: buffer_start.row..buffer_end.row + 1,
2736 display_rows: display_start.row()..display_end.row() + 1,
2737 }
2738 }
2739}
2740
2741#[cfg(test)]
2742mod tests {
2743 use super::*;
2744 use crate::test::sample_text;
2745 use buffer::{History, Point};
2746 use unindent::Unindent;
2747
2748 #[gpui::test]
2749 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
2750 let buffer = cx.add_model(|cx| Buffer::new(0, "aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx));
2751 let settings = EditorSettings::test(cx);
2752 let (_, editor) =
2753 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
2754
2755 editor.update(cx, |view, cx| {
2756 view.begin_selection(DisplayPoint::new(2, 2), false, cx);
2757 });
2758
2759 assert_eq!(
2760 editor.update(cx, |view, cx| view.selection_ranges(cx)),
2761 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
2762 );
2763
2764 editor.update(cx, |view, cx| {
2765 view.update_selection(DisplayPoint::new(3, 3), Vector2F::zero(), cx);
2766 });
2767
2768 assert_eq!(
2769 editor.update(cx, |view, cx| view.selection_ranges(cx)),
2770 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
2771 );
2772
2773 editor.update(cx, |view, cx| {
2774 view.update_selection(DisplayPoint::new(1, 1), Vector2F::zero(), cx);
2775 });
2776
2777 assert_eq!(
2778 editor.update(cx, |view, cx| view.selection_ranges(cx)),
2779 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
2780 );
2781
2782 editor.update(cx, |view, cx| {
2783 view.end_selection(cx);
2784 view.update_selection(DisplayPoint::new(3, 3), Vector2F::zero(), cx);
2785 });
2786
2787 assert_eq!(
2788 editor.update(cx, |view, cx| view.selection_ranges(cx)),
2789 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
2790 );
2791
2792 editor.update(cx, |view, cx| {
2793 view.begin_selection(DisplayPoint::new(3, 3), true, cx);
2794 view.update_selection(DisplayPoint::new(0, 0), Vector2F::zero(), cx);
2795 });
2796
2797 assert_eq!(
2798 editor.update(cx, |view, cx| view.selection_ranges(cx)),
2799 [
2800 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
2801 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
2802 ]
2803 );
2804
2805 editor.update(cx, |view, cx| {
2806 view.end_selection(cx);
2807 });
2808
2809 assert_eq!(
2810 editor.update(cx, |view, cx| view.selection_ranges(cx)),
2811 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
2812 );
2813 }
2814
2815 #[gpui::test]
2816 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
2817 let buffer = cx.add_model(|cx| Buffer::new(0, "aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx));
2818 let settings = EditorSettings::test(cx);
2819 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
2820
2821 view.update(cx, |view, cx| {
2822 view.begin_selection(DisplayPoint::new(2, 2), false, cx);
2823 assert_eq!(
2824 view.selection_ranges(cx),
2825 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
2826 );
2827 });
2828
2829 view.update(cx, |view, cx| {
2830 view.update_selection(DisplayPoint::new(3, 3), Vector2F::zero(), cx);
2831 assert_eq!(
2832 view.selection_ranges(cx),
2833 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
2834 );
2835 });
2836
2837 view.update(cx, |view, cx| {
2838 view.cancel(&Cancel, cx);
2839 view.update_selection(DisplayPoint::new(1, 1), Vector2F::zero(), cx);
2840 assert_eq!(
2841 view.selection_ranges(cx),
2842 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
2843 );
2844 });
2845 }
2846
2847 #[gpui::test]
2848 fn test_cancel(cx: &mut gpui::MutableAppContext) {
2849 let buffer = cx.add_model(|cx| Buffer::new(0, "aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx));
2850 let settings = EditorSettings::test(cx);
2851 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
2852
2853 view.update(cx, |view, cx| {
2854 view.begin_selection(DisplayPoint::new(3, 4), false, cx);
2855 view.update_selection(DisplayPoint::new(1, 1), Vector2F::zero(), cx);
2856 view.end_selection(cx);
2857
2858 view.begin_selection(DisplayPoint::new(0, 1), true, cx);
2859 view.update_selection(DisplayPoint::new(0, 3), Vector2F::zero(), cx);
2860 view.end_selection(cx);
2861 assert_eq!(
2862 view.selection_ranges(cx),
2863 [
2864 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
2865 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
2866 ]
2867 );
2868 });
2869
2870 view.update(cx, |view, cx| {
2871 view.cancel(&Cancel, cx);
2872 assert_eq!(
2873 view.selection_ranges(cx),
2874 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
2875 );
2876 });
2877
2878 view.update(cx, |view, cx| {
2879 view.cancel(&Cancel, cx);
2880 assert_eq!(
2881 view.selection_ranges(cx),
2882 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
2883 );
2884 });
2885 }
2886
2887 #[gpui::test]
2888 fn test_fold(cx: &mut gpui::MutableAppContext) {
2889 let buffer = cx.add_model(|cx| {
2890 Buffer::new(
2891 0,
2892 "
2893 impl Foo {
2894 // Hello!
2895
2896 fn a() {
2897 1
2898 }
2899
2900 fn b() {
2901 2
2902 }
2903
2904 fn c() {
2905 3
2906 }
2907 }
2908 "
2909 .unindent(),
2910 cx,
2911 )
2912 });
2913 let settings = EditorSettings::test(&cx);
2914 let (_, view) = cx.add_window(Default::default(), |cx| {
2915 build_editor(buffer.clone(), settings, cx)
2916 });
2917
2918 view.update(cx, |view, cx| {
2919 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx)
2920 .unwrap();
2921 view.fold(&Fold, cx);
2922 assert_eq!(
2923 view.display_text(cx),
2924 "
2925 impl Foo {
2926 // Hello!
2927
2928 fn a() {
2929 1
2930 }
2931
2932 fn b() {…
2933 }
2934
2935 fn c() {…
2936 }
2937 }
2938 "
2939 .unindent(),
2940 );
2941
2942 view.fold(&Fold, cx);
2943 assert_eq!(
2944 view.display_text(cx),
2945 "
2946 impl Foo {…
2947 }
2948 "
2949 .unindent(),
2950 );
2951
2952 view.unfold(&Unfold, cx);
2953 assert_eq!(
2954 view.display_text(cx),
2955 "
2956 impl Foo {
2957 // Hello!
2958
2959 fn a() {
2960 1
2961 }
2962
2963 fn b() {…
2964 }
2965
2966 fn c() {…
2967 }
2968 }
2969 "
2970 .unindent(),
2971 );
2972
2973 view.unfold(&Unfold, cx);
2974 assert_eq!(view.display_text(cx), buffer.read(cx).text());
2975 });
2976 }
2977
2978 #[gpui::test]
2979 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
2980 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(6, 6), cx));
2981 let settings = EditorSettings::test(&cx);
2982 let (_, view) = cx.add_window(Default::default(), |cx| {
2983 build_editor(buffer.clone(), settings, cx)
2984 });
2985
2986 buffer.update(cx, |buffer, cx| {
2987 buffer.edit(
2988 vec![
2989 Point::new(1, 0)..Point::new(1, 0),
2990 Point::new(1, 1)..Point::new(1, 1),
2991 ],
2992 "\t",
2993 cx,
2994 );
2995 });
2996
2997 view.update(cx, |view, cx| {
2998 assert_eq!(
2999 view.selection_ranges(cx),
3000 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
3001 );
3002
3003 view.move_down(&MoveDown, cx);
3004 assert_eq!(
3005 view.selection_ranges(cx),
3006 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
3007 );
3008
3009 view.move_right(&MoveRight, cx);
3010 assert_eq!(
3011 view.selection_ranges(cx),
3012 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
3013 );
3014
3015 view.move_left(&MoveLeft, cx);
3016 assert_eq!(
3017 view.selection_ranges(cx),
3018 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
3019 );
3020
3021 view.move_up(&MoveUp, cx);
3022 assert_eq!(
3023 view.selection_ranges(cx),
3024 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
3025 );
3026
3027 view.move_to_end(&MoveToEnd, cx);
3028 assert_eq!(
3029 view.selection_ranges(cx),
3030 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
3031 );
3032
3033 view.move_to_beginning(&MoveToBeginning, cx);
3034 assert_eq!(
3035 view.selection_ranges(cx),
3036 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
3037 );
3038
3039 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx)
3040 .unwrap();
3041 view.select_to_beginning(&SelectToBeginning, cx);
3042 assert_eq!(
3043 view.selection_ranges(cx),
3044 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
3045 );
3046
3047 view.select_to_end(&SelectToEnd, cx);
3048 assert_eq!(
3049 view.selection_ranges(cx),
3050 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
3051 );
3052 });
3053 }
3054
3055 #[gpui::test]
3056 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
3057 let buffer = cx.add_model(|cx| Buffer::new(0, "ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx));
3058 let settings = EditorSettings::test(&cx);
3059 let (_, view) = cx.add_window(Default::default(), |cx| {
3060 build_editor(buffer.clone(), settings, cx)
3061 });
3062
3063 assert_eq!('ⓐ'.len_utf8(), 3);
3064 assert_eq!('α'.len_utf8(), 2);
3065
3066 view.update(cx, |view, cx| {
3067 view.fold_ranges(
3068 vec![
3069 Point::new(0, 6)..Point::new(0, 12),
3070 Point::new(1, 2)..Point::new(1, 4),
3071 Point::new(2, 4)..Point::new(2, 8),
3072 ],
3073 cx,
3074 );
3075 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
3076
3077 view.move_right(&MoveRight, cx);
3078 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐ".len())]);
3079 view.move_right(&MoveRight, cx);
3080 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ".len())]);
3081 view.move_right(&MoveRight, cx);
3082 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ…".len())]);
3083
3084 view.move_down(&MoveDown, cx);
3085 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "ab…".len())]);
3086 view.move_left(&MoveLeft, cx);
3087 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "ab".len())]);
3088 view.move_left(&MoveLeft, cx);
3089 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "a".len())]);
3090
3091 view.move_down(&MoveDown, cx);
3092 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "α".len())]);
3093 view.move_right(&MoveRight, cx);
3094 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβ".len())]);
3095 view.move_right(&MoveRight, cx);
3096 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβ…".len())]);
3097 view.move_right(&MoveRight, cx);
3098 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβ…ε".len())]);
3099
3100 view.move_up(&MoveUp, cx);
3101 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "ab…e".len())]);
3102 view.move_up(&MoveUp, cx);
3103 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ…ⓔ".len())]);
3104 view.move_left(&MoveLeft, cx);
3105 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ…".len())]);
3106 view.move_left(&MoveLeft, cx);
3107 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ".len())]);
3108 view.move_left(&MoveLeft, cx);
3109 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐ".len())]);
3110 });
3111 }
3112
3113 #[gpui::test]
3114 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
3115 let buffer = cx.add_model(|cx| Buffer::new(0, "ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx));
3116 let settings = EditorSettings::test(&cx);
3117 let (_, view) = cx.add_window(Default::default(), |cx| {
3118 build_editor(buffer.clone(), settings, cx)
3119 });
3120 view.update(cx, |view, cx| {
3121 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx)
3122 .unwrap();
3123
3124 view.move_down(&MoveDown, cx);
3125 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "abcd".len())]);
3126
3127 view.move_down(&MoveDown, cx);
3128 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβγ".len())]);
3129
3130 view.move_down(&MoveDown, cx);
3131 assert_eq!(view.selection_ranges(cx), &[empty_range(3, "abcd".len())]);
3132
3133 view.move_down(&MoveDown, cx);
3134 assert_eq!(view.selection_ranges(cx), &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]);
3135
3136 view.move_up(&MoveUp, cx);
3137 assert_eq!(view.selection_ranges(cx), &[empty_range(3, "abcd".len())]);
3138
3139 view.move_up(&MoveUp, cx);
3140 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβγ".len())]);
3141 });
3142 }
3143
3144 #[gpui::test]
3145 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
3146 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\n def", cx));
3147 let settings = EditorSettings::test(&cx);
3148 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3149 view.update(cx, |view, cx| {
3150 view.select_display_ranges(
3151 &[
3152 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
3153 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
3154 ],
3155 cx,
3156 )
3157 .unwrap();
3158 });
3159
3160 view.update(cx, |view, cx| {
3161 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
3162 assert_eq!(
3163 view.selection_ranges(cx),
3164 &[
3165 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
3166 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
3167 ]
3168 );
3169 });
3170
3171 view.update(cx, |view, cx| {
3172 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
3173 assert_eq!(
3174 view.selection_ranges(cx),
3175 &[
3176 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
3177 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
3178 ]
3179 );
3180 });
3181
3182 view.update(cx, |view, cx| {
3183 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
3184 assert_eq!(
3185 view.selection_ranges(cx),
3186 &[
3187 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
3188 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
3189 ]
3190 );
3191 });
3192
3193 view.update(cx, |view, cx| {
3194 view.move_to_end_of_line(&MoveToEndOfLine, cx);
3195 assert_eq!(
3196 view.selection_ranges(cx),
3197 &[
3198 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
3199 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
3200 ]
3201 );
3202 });
3203
3204 // Moving to the end of line again is a no-op.
3205 view.update(cx, |view, cx| {
3206 view.move_to_end_of_line(&MoveToEndOfLine, cx);
3207 assert_eq!(
3208 view.selection_ranges(cx),
3209 &[
3210 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
3211 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
3212 ]
3213 );
3214 });
3215
3216 view.update(cx, |view, cx| {
3217 view.move_left(&MoveLeft, cx);
3218 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
3219 assert_eq!(
3220 view.selection_ranges(cx),
3221 &[
3222 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
3223 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
3224 ]
3225 );
3226 });
3227
3228 view.update(cx, |view, cx| {
3229 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
3230 assert_eq!(
3231 view.selection_ranges(cx),
3232 &[
3233 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
3234 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
3235 ]
3236 );
3237 });
3238
3239 view.update(cx, |view, cx| {
3240 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
3241 assert_eq!(
3242 view.selection_ranges(cx),
3243 &[
3244 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
3245 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
3246 ]
3247 );
3248 });
3249
3250 view.update(cx, |view, cx| {
3251 view.select_to_end_of_line(&SelectToEndOfLine, cx);
3252 assert_eq!(
3253 view.selection_ranges(cx),
3254 &[
3255 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
3256 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
3257 ]
3258 );
3259 });
3260
3261 view.update(cx, |view, cx| {
3262 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
3263 assert_eq!(view.display_text(cx), "ab\n de");
3264 assert_eq!(
3265 view.selection_ranges(cx),
3266 &[
3267 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
3268 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
3269 ]
3270 );
3271 });
3272
3273 view.update(cx, |view, cx| {
3274 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
3275 assert_eq!(view.display_text(cx), "\n");
3276 assert_eq!(
3277 view.selection_ranges(cx),
3278 &[
3279 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
3280 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
3281 ]
3282 );
3283 });
3284 }
3285
3286 #[gpui::test]
3287 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
3288 let buffer =
3289 cx.add_model(|cx| Buffer::new(0, "use std::str::{foo, bar}\n\n {baz.qux()}", cx));
3290 let settings = EditorSettings::test(&cx);
3291 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3292 view.update(cx, |view, cx| {
3293 view.select_display_ranges(
3294 &[
3295 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
3296 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
3297 ],
3298 cx,
3299 )
3300 .unwrap();
3301 });
3302
3303 view.update(cx, |view, cx| {
3304 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
3305 assert_eq!(
3306 view.selection_ranges(cx),
3307 &[
3308 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
3309 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
3310 ]
3311 );
3312 });
3313
3314 view.update(cx, |view, cx| {
3315 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
3316 assert_eq!(
3317 view.selection_ranges(cx),
3318 &[
3319 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
3320 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2),
3321 ]
3322 );
3323 });
3324
3325 view.update(cx, |view, cx| {
3326 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
3327 assert_eq!(
3328 view.selection_ranges(cx),
3329 &[
3330 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
3331 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
3332 ]
3333 );
3334 });
3335
3336 view.update(cx, |view, cx| {
3337 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
3338 assert_eq!(
3339 view.selection_ranges(cx),
3340 &[
3341 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
3342 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
3343 ]
3344 );
3345 });
3346
3347 view.update(cx, |view, cx| {
3348 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
3349 assert_eq!(
3350 view.selection_ranges(cx),
3351 &[
3352 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
3353 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 23),
3354 ]
3355 );
3356 });
3357
3358 view.update(cx, |view, cx| {
3359 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
3360 assert_eq!(
3361 view.selection_ranges(cx),
3362 &[
3363 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
3364 DisplayPoint::new(0, 24)..DisplayPoint::new(0, 24),
3365 ]
3366 );
3367 });
3368
3369 view.update(cx, |view, cx| {
3370 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
3371 assert_eq!(
3372 view.selection_ranges(cx),
3373 &[
3374 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
3375 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
3376 ]
3377 );
3378 });
3379
3380 view.update(cx, |view, cx| {
3381 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
3382 assert_eq!(
3383 view.selection_ranges(cx),
3384 &[
3385 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
3386 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
3387 ]
3388 );
3389 });
3390
3391 view.update(cx, |view, cx| {
3392 view.move_right(&MoveRight, cx);
3393 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
3394 assert_eq!(
3395 view.selection_ranges(cx),
3396 &[
3397 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
3398 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
3399 ]
3400 );
3401 });
3402
3403 view.update(cx, |view, cx| {
3404 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
3405 assert_eq!(
3406 view.selection_ranges(cx),
3407 &[
3408 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 7),
3409 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 2),
3410 ]
3411 );
3412 });
3413
3414 view.update(cx, |view, cx| {
3415 view.select_to_next_word_boundary(&SelectToNextWordBoundary, cx);
3416 assert_eq!(
3417 view.selection_ranges(cx),
3418 &[
3419 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
3420 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
3421 ]
3422 );
3423 });
3424 }
3425
3426 #[gpui::test]
3427 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
3428 let buffer =
3429 cx.add_model(|cx| Buffer::new(0, "use one::{\n two::three::four::five\n};", cx));
3430 let settings = EditorSettings::test(&cx);
3431 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3432
3433 view.update(cx, |view, cx| {
3434 view.set_wrap_width(140., cx);
3435 assert_eq!(
3436 view.display_text(cx),
3437 "use one::{\n two::three::\n four::five\n};"
3438 );
3439
3440 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx)
3441 .unwrap();
3442
3443 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
3444 assert_eq!(
3445 view.selection_ranges(cx),
3446 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
3447 );
3448
3449 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
3450 assert_eq!(
3451 view.selection_ranges(cx),
3452 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
3453 );
3454
3455 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
3456 assert_eq!(
3457 view.selection_ranges(cx),
3458 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
3459 );
3460
3461 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
3462 assert_eq!(
3463 view.selection_ranges(cx),
3464 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
3465 );
3466
3467 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
3468 assert_eq!(
3469 view.selection_ranges(cx),
3470 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
3471 );
3472
3473 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
3474 assert_eq!(
3475 view.selection_ranges(cx),
3476 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
3477 );
3478 });
3479 }
3480
3481 #[gpui::test]
3482 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
3483 let buffer = cx.add_model(|cx| Buffer::new(0, "one two three four", cx));
3484 let settings = EditorSettings::test(&cx);
3485 let (_, view) = cx.add_window(Default::default(), |cx| {
3486 build_editor(buffer.clone(), settings, cx)
3487 });
3488
3489 view.update(cx, |view, cx| {
3490 view.select_display_ranges(
3491 &[
3492 // an empty selection - the preceding word fragment is deleted
3493 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
3494 // characters selected - they are deleted
3495 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
3496 ],
3497 cx,
3498 )
3499 .unwrap();
3500 view.delete_to_previous_word_boundary(&DeleteToPreviousWordBoundary, cx);
3501 });
3502
3503 assert_eq!(buffer.read(cx).text(), "e two te four");
3504
3505 view.update(cx, |view, cx| {
3506 view.select_display_ranges(
3507 &[
3508 // an empty selection - the following word fragment is deleted
3509 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
3510 // characters selected - they are deleted
3511 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
3512 ],
3513 cx,
3514 )
3515 .unwrap();
3516 view.delete_to_next_word_boundary(&DeleteToNextWordBoundary, cx);
3517 });
3518
3519 assert_eq!(buffer.read(cx).text(), "e t te our");
3520 }
3521
3522 #[gpui::test]
3523 fn test_backspace(cx: &mut gpui::MutableAppContext) {
3524 let buffer = cx.add_model(|cx| {
3525 Buffer::new(
3526 0,
3527 "one two three\nfour five six\nseven eight nine\nten\n",
3528 cx,
3529 )
3530 });
3531 let settings = EditorSettings::test(&cx);
3532 let (_, view) = cx.add_window(Default::default(), |cx| {
3533 build_editor(buffer.clone(), settings, cx)
3534 });
3535
3536 view.update(cx, |view, cx| {
3537 view.select_display_ranges(
3538 &[
3539 // an empty selection - the preceding character is deleted
3540 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
3541 // one character selected - it is deleted
3542 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
3543 // a line suffix selected - it is deleted
3544 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
3545 ],
3546 cx,
3547 )
3548 .unwrap();
3549 view.backspace(&Backspace, cx);
3550 });
3551
3552 assert_eq!(
3553 buffer.read(cx).text(),
3554 "oe two three\nfou five six\nseven ten\n"
3555 );
3556 }
3557
3558 #[gpui::test]
3559 fn test_delete(cx: &mut gpui::MutableAppContext) {
3560 let buffer = cx.add_model(|cx| {
3561 Buffer::new(
3562 0,
3563 "one two three\nfour five six\nseven eight nine\nten\n",
3564 cx,
3565 )
3566 });
3567 let settings = EditorSettings::test(&cx);
3568 let (_, view) = cx.add_window(Default::default(), |cx| {
3569 build_editor(buffer.clone(), settings, cx)
3570 });
3571
3572 view.update(cx, |view, cx| {
3573 view.select_display_ranges(
3574 &[
3575 // an empty selection - the following character is deleted
3576 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
3577 // one character selected - it is deleted
3578 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
3579 // a line suffix selected - it is deleted
3580 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
3581 ],
3582 cx,
3583 )
3584 .unwrap();
3585 view.delete(&Delete, cx);
3586 });
3587
3588 assert_eq!(
3589 buffer.read(cx).text(),
3590 "on two three\nfou five six\nseven ten\n"
3591 );
3592 }
3593
3594 #[gpui::test]
3595 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
3596 let settings = EditorSettings::test(&cx);
3597 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\ndef\nghi\n", cx));
3598 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3599 view.update(cx, |view, cx| {
3600 view.select_display_ranges(
3601 &[
3602 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
3603 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
3604 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
3605 ],
3606 cx,
3607 )
3608 .unwrap();
3609 view.delete_line(&DeleteLine, cx);
3610 assert_eq!(view.display_text(cx), "ghi");
3611 assert_eq!(
3612 view.selection_ranges(cx),
3613 vec![
3614 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
3615 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
3616 ]
3617 );
3618 });
3619
3620 let settings = EditorSettings::test(&cx);
3621 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\ndef\nghi\n", cx));
3622 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3623 view.update(cx, |view, cx| {
3624 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx)
3625 .unwrap();
3626 view.delete_line(&DeleteLine, cx);
3627 assert_eq!(view.display_text(cx), "ghi\n");
3628 assert_eq!(
3629 view.selection_ranges(cx),
3630 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
3631 );
3632 });
3633 }
3634
3635 #[gpui::test]
3636 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
3637 let settings = EditorSettings::test(&cx);
3638 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\ndef\nghi\n", cx));
3639 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3640 view.update(cx, |view, cx| {
3641 view.select_display_ranges(
3642 &[
3643 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
3644 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
3645 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
3646 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
3647 ],
3648 cx,
3649 )
3650 .unwrap();
3651 view.duplicate_line(&DuplicateLine, cx);
3652 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
3653 assert_eq!(
3654 view.selection_ranges(cx),
3655 vec![
3656 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
3657 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
3658 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
3659 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
3660 ]
3661 );
3662 });
3663
3664 let settings = EditorSettings::test(&cx);
3665 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\ndef\nghi\n", cx));
3666 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3667 view.update(cx, |view, cx| {
3668 view.select_display_ranges(
3669 &[
3670 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
3671 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
3672 ],
3673 cx,
3674 )
3675 .unwrap();
3676 view.duplicate_line(&DuplicateLine, cx);
3677 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
3678 assert_eq!(
3679 view.selection_ranges(cx),
3680 vec![
3681 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
3682 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
3683 ]
3684 );
3685 });
3686 }
3687
3688 #[gpui::test]
3689 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
3690 let settings = EditorSettings::test(&cx);
3691 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(10, 5), cx));
3692 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3693 view.update(cx, |view, cx| {
3694 view.fold_ranges(
3695 vec![
3696 Point::new(0, 2)..Point::new(1, 2),
3697 Point::new(2, 3)..Point::new(4, 1),
3698 Point::new(7, 0)..Point::new(8, 4),
3699 ],
3700 cx,
3701 );
3702 view.select_display_ranges(
3703 &[
3704 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
3705 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
3706 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
3707 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
3708 ],
3709 cx,
3710 )
3711 .unwrap();
3712 assert_eq!(
3713 view.display_text(cx),
3714 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
3715 );
3716
3717 view.move_line_up(&MoveLineUp, cx);
3718 assert_eq!(
3719 view.display_text(cx),
3720 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
3721 );
3722 assert_eq!(
3723 view.selection_ranges(cx),
3724 vec![
3725 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
3726 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
3727 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
3728 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
3729 ]
3730 );
3731 });
3732
3733 view.update(cx, |view, cx| {
3734 view.move_line_down(&MoveLineDown, cx);
3735 assert_eq!(
3736 view.display_text(cx),
3737 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
3738 );
3739 assert_eq!(
3740 view.selection_ranges(cx),
3741 vec![
3742 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
3743 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
3744 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
3745 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
3746 ]
3747 );
3748 });
3749
3750 view.update(cx, |view, cx| {
3751 view.move_line_down(&MoveLineDown, cx);
3752 assert_eq!(
3753 view.display_text(cx),
3754 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
3755 );
3756 assert_eq!(
3757 view.selection_ranges(cx),
3758 vec![
3759 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
3760 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
3761 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
3762 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
3763 ]
3764 );
3765 });
3766
3767 view.update(cx, |view, cx| {
3768 view.move_line_up(&MoveLineUp, cx);
3769 assert_eq!(
3770 view.display_text(cx),
3771 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
3772 );
3773 assert_eq!(
3774 view.selection_ranges(cx),
3775 vec![
3776 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
3777 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
3778 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
3779 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
3780 ]
3781 );
3782 });
3783 }
3784
3785 #[gpui::test]
3786 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
3787 let buffer = cx.add_model(|cx| Buffer::new(0, "one✅ two three four five six ", cx));
3788 let settings = EditorSettings::test(&cx);
3789 let view = cx
3790 .add_window(Default::default(), |cx| {
3791 build_editor(buffer.clone(), settings, cx)
3792 })
3793 .1;
3794
3795 // Cut with three selections. Clipboard text is divided into three slices.
3796 view.update(cx, |view, cx| {
3797 view.select_ranges(vec![0..7, 11..17, 22..27], false, cx);
3798 view.cut(&Cut, cx);
3799 assert_eq!(view.display_text(cx), "two four six ");
3800 });
3801
3802 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
3803 view.update(cx, |view, cx| {
3804 view.select_ranges(vec![4..4, 9..9, 13..13], false, cx);
3805 view.paste(&Paste, cx);
3806 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
3807 assert_eq!(
3808 view.selection_ranges(cx),
3809 &[
3810 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
3811 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
3812 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
3813 ]
3814 );
3815 });
3816
3817 // Paste again but with only two cursors. Since the number of cursors doesn't
3818 // match the number of slices in the clipboard, the entire clipboard text
3819 // is pasted at each cursor.
3820 view.update(cx, |view, cx| {
3821 view.select_ranges(vec![0..0, 31..31], false, cx);
3822 view.handle_input(&Input("( ".into()), cx);
3823 view.paste(&Paste, cx);
3824 view.handle_input(&Input(") ".into()), cx);
3825 assert_eq!(
3826 view.display_text(cx),
3827 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
3828 );
3829 });
3830
3831 view.update(cx, |view, cx| {
3832 view.select_ranges(vec![0..0], false, cx);
3833 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
3834 assert_eq!(
3835 view.display_text(cx),
3836 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
3837 );
3838 });
3839
3840 // Cut with three selections, one of which is full-line.
3841 view.update(cx, |view, cx| {
3842 view.select_display_ranges(
3843 &[
3844 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
3845 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
3846 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
3847 ],
3848 cx,
3849 )
3850 .unwrap();
3851 view.cut(&Cut, cx);
3852 assert_eq!(
3853 view.display_text(cx),
3854 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
3855 );
3856 });
3857
3858 // Paste with three selections, noticing how the copied selection that was full-line
3859 // gets inserted before the second cursor.
3860 view.update(cx, |view, cx| {
3861 view.select_display_ranges(
3862 &[
3863 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
3864 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
3865 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
3866 ],
3867 cx,
3868 )
3869 .unwrap();
3870 view.paste(&Paste, cx);
3871 assert_eq!(
3872 view.display_text(cx),
3873 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
3874 );
3875 assert_eq!(
3876 view.selection_ranges(cx),
3877 &[
3878 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
3879 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
3880 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
3881 ]
3882 );
3883 });
3884
3885 // Copy with a single cursor only, which writes the whole line into the clipboard.
3886 view.update(cx, |view, cx| {
3887 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx)
3888 .unwrap();
3889 view.copy(&Copy, cx);
3890 });
3891
3892 // Paste with three selections, noticing how the copied full-line selection is inserted
3893 // before the empty selections but replaces the selection that is non-empty.
3894 view.update(cx, |view, cx| {
3895 view.select_display_ranges(
3896 &[
3897 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
3898 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
3899 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
3900 ],
3901 cx,
3902 )
3903 .unwrap();
3904 view.paste(&Paste, cx);
3905 assert_eq!(
3906 view.display_text(cx),
3907 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
3908 );
3909 assert_eq!(
3910 view.selection_ranges(cx),
3911 &[
3912 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
3913 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
3914 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
3915 ]
3916 );
3917 });
3918 }
3919
3920 #[gpui::test]
3921 fn test_select_all(cx: &mut gpui::MutableAppContext) {
3922 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\nde\nfgh", cx));
3923 let settings = EditorSettings::test(&cx);
3924 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3925 view.update(cx, |view, cx| {
3926 view.select_all(&SelectAll, cx);
3927 assert_eq!(
3928 view.selection_ranges(cx),
3929 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
3930 );
3931 });
3932 }
3933
3934 #[gpui::test]
3935 fn test_select_line(cx: &mut gpui::MutableAppContext) {
3936 let settings = EditorSettings::test(&cx);
3937 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(6, 5), cx));
3938 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3939 view.update(cx, |view, cx| {
3940 view.select_display_ranges(
3941 &[
3942 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
3943 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
3944 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
3945 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
3946 ],
3947 cx,
3948 )
3949 .unwrap();
3950 view.select_line(&SelectLine, cx);
3951 assert_eq!(
3952 view.selection_ranges(cx),
3953 vec![
3954 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
3955 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
3956 ]
3957 );
3958 });
3959
3960 view.update(cx, |view, cx| {
3961 view.select_line(&SelectLine, cx);
3962 assert_eq!(
3963 view.selection_ranges(cx),
3964 vec![
3965 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
3966 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
3967 ]
3968 );
3969 });
3970
3971 view.update(cx, |view, cx| {
3972 view.select_line(&SelectLine, cx);
3973 assert_eq!(
3974 view.selection_ranges(cx),
3975 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
3976 );
3977 });
3978 }
3979
3980 #[gpui::test]
3981 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
3982 let settings = EditorSettings::test(&cx);
3983 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(9, 5), cx));
3984 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3985 view.update(cx, |view, cx| {
3986 view.fold_ranges(
3987 vec![
3988 Point::new(0, 2)..Point::new(1, 2),
3989 Point::new(2, 3)..Point::new(4, 1),
3990 Point::new(7, 0)..Point::new(8, 4),
3991 ],
3992 cx,
3993 );
3994 view.select_display_ranges(
3995 &[
3996 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
3997 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
3998 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
3999 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
4000 ],
4001 cx,
4002 )
4003 .unwrap();
4004 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
4005 });
4006
4007 view.update(cx, |view, cx| {
4008 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
4009 assert_eq!(
4010 view.display_text(cx),
4011 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
4012 );
4013 assert_eq!(
4014 view.selection_ranges(cx),
4015 [
4016 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4017 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4018 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
4019 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
4020 ]
4021 );
4022 });
4023
4024 view.update(cx, |view, cx| {
4025 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx)
4026 .unwrap();
4027 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
4028 assert_eq!(
4029 view.display_text(cx),
4030 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
4031 );
4032 assert_eq!(
4033 view.selection_ranges(cx),
4034 [
4035 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4036 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
4037 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
4038 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
4039 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
4040 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
4041 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
4042 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
4043 ]
4044 );
4045 });
4046 }
4047
4048 #[gpui::test]
4049 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
4050 let settings = EditorSettings::test(&cx);
4051 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\ndefghi\n\njk\nlmno\n", cx));
4052 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4053
4054 view.update(cx, |view, cx| {
4055 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx)
4056 .unwrap();
4057 });
4058 view.update(cx, |view, cx| {
4059 view.add_selection_above(&AddSelectionAbove, cx);
4060 assert_eq!(
4061 view.selection_ranges(cx),
4062 vec![
4063 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4064 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
4065 ]
4066 );
4067 });
4068
4069 view.update(cx, |view, cx| {
4070 view.add_selection_above(&AddSelectionAbove, cx);
4071 assert_eq!(
4072 view.selection_ranges(cx),
4073 vec![
4074 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4075 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
4076 ]
4077 );
4078 });
4079
4080 view.update(cx, |view, cx| {
4081 view.add_selection_below(&AddSelectionBelow, cx);
4082 assert_eq!(
4083 view.selection_ranges(cx),
4084 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
4085 );
4086 });
4087
4088 view.update(cx, |view, cx| {
4089 view.add_selection_below(&AddSelectionBelow, cx);
4090 assert_eq!(
4091 view.selection_ranges(cx),
4092 vec![
4093 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
4094 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
4095 ]
4096 );
4097 });
4098
4099 view.update(cx, |view, cx| {
4100 view.add_selection_below(&AddSelectionBelow, cx);
4101 assert_eq!(
4102 view.selection_ranges(cx),
4103 vec![
4104 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
4105 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
4106 ]
4107 );
4108 });
4109
4110 view.update(cx, |view, cx| {
4111 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx)
4112 .unwrap();
4113 });
4114 view.update(cx, |view, cx| {
4115 view.add_selection_below(&AddSelectionBelow, cx);
4116 assert_eq!(
4117 view.selection_ranges(cx),
4118 vec![
4119 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
4120 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
4121 ]
4122 );
4123 });
4124
4125 view.update(cx, |view, cx| {
4126 view.add_selection_below(&AddSelectionBelow, cx);
4127 assert_eq!(
4128 view.selection_ranges(cx),
4129 vec![
4130 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
4131 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
4132 ]
4133 );
4134 });
4135
4136 view.update(cx, |view, cx| {
4137 view.add_selection_above(&AddSelectionAbove, cx);
4138 assert_eq!(
4139 view.selection_ranges(cx),
4140 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
4141 );
4142 });
4143
4144 view.update(cx, |view, cx| {
4145 view.add_selection_above(&AddSelectionAbove, cx);
4146 assert_eq!(
4147 view.selection_ranges(cx),
4148 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
4149 );
4150 });
4151
4152 view.update(cx, |view, cx| {
4153 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx)
4154 .unwrap();
4155 view.add_selection_below(&AddSelectionBelow, cx);
4156 assert_eq!(
4157 view.selection_ranges(cx),
4158 vec![
4159 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
4160 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
4161 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
4162 ]
4163 );
4164 });
4165
4166 view.update(cx, |view, cx| {
4167 view.add_selection_below(&AddSelectionBelow, cx);
4168 assert_eq!(
4169 view.selection_ranges(cx),
4170 vec![
4171 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
4172 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
4173 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
4174 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
4175 ]
4176 );
4177 });
4178
4179 view.update(cx, |view, cx| {
4180 view.add_selection_above(&AddSelectionAbove, cx);
4181 assert_eq!(
4182 view.selection_ranges(cx),
4183 vec![
4184 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
4185 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
4186 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
4187 ]
4188 );
4189 });
4190
4191 view.update(cx, |view, cx| {
4192 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx)
4193 .unwrap();
4194 });
4195 view.update(cx, |view, cx| {
4196 view.add_selection_above(&AddSelectionAbove, cx);
4197 assert_eq!(
4198 view.selection_ranges(cx),
4199 vec![
4200 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
4201 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
4202 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
4203 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
4204 ]
4205 );
4206 });
4207
4208 view.update(cx, |view, cx| {
4209 view.add_selection_below(&AddSelectionBelow, cx);
4210 assert_eq!(
4211 view.selection_ranges(cx),
4212 vec![
4213 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
4214 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
4215 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
4216 ]
4217 );
4218 });
4219 }
4220
4221 #[gpui::test]
4222 async fn test_select_larger_smaller_syntax_node(mut cx: gpui::TestAppContext) {
4223 let settings = cx.read(EditorSettings::test);
4224 let language = Arc::new(Language::new(
4225 LanguageConfig::default(),
4226 tree_sitter_rust::language(),
4227 ));
4228
4229 let text = r#"
4230 use mod1::mod2::{mod3, mod4};
4231
4232 fn fn_1(param1: bool, param2: &str) {
4233 let var1 = "text";
4234 }
4235 "#
4236 .unindent();
4237
4238 let buffer = cx.add_model(|cx| {
4239 let history = History::new(text.into());
4240 Buffer::from_history(0, history, None, Some(language), cx)
4241 });
4242 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
4243 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing())
4244 .await;
4245
4246 view.update(&mut cx, |view, cx| {
4247 view.select_display_ranges(
4248 &[
4249 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
4250 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
4251 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
4252 ],
4253 cx,
4254 )
4255 .unwrap();
4256 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
4257 });
4258 assert_eq!(
4259 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4260 &[
4261 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
4262 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
4263 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
4264 ]
4265 );
4266
4267 view.update(&mut cx, |view, cx| {
4268 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
4269 });
4270 assert_eq!(
4271 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4272 &[
4273 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
4274 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
4275 ]
4276 );
4277
4278 view.update(&mut cx, |view, cx| {
4279 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
4280 });
4281 assert_eq!(
4282 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4283 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
4284 );
4285
4286 // Trying to expand the selected syntax node one more time has no effect.
4287 view.update(&mut cx, |view, cx| {
4288 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
4289 });
4290 assert_eq!(
4291 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4292 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
4293 );
4294
4295 view.update(&mut cx, |view, cx| {
4296 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
4297 });
4298 assert_eq!(
4299 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4300 &[
4301 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
4302 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
4303 ]
4304 );
4305
4306 view.update(&mut cx, |view, cx| {
4307 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
4308 });
4309 assert_eq!(
4310 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4311 &[
4312 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
4313 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
4314 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
4315 ]
4316 );
4317
4318 view.update(&mut cx, |view, cx| {
4319 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
4320 });
4321 assert_eq!(
4322 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4323 &[
4324 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
4325 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
4326 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
4327 ]
4328 );
4329
4330 // Trying to shrink the selected syntax node one more time has no effect.
4331 view.update(&mut cx, |view, cx| {
4332 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
4333 });
4334 assert_eq!(
4335 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4336 &[
4337 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
4338 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
4339 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
4340 ]
4341 );
4342
4343 // Ensure that we keep expanding the selection if the larger selection starts or ends within
4344 // a fold.
4345 view.update(&mut cx, |view, cx| {
4346 view.fold_ranges(
4347 vec![
4348 Point::new(0, 21)..Point::new(0, 24),
4349 Point::new(3, 20)..Point::new(3, 22),
4350 ],
4351 cx,
4352 );
4353 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
4354 });
4355 assert_eq!(
4356 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4357 &[
4358 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
4359 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
4360 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
4361 ]
4362 );
4363 }
4364
4365 #[gpui::test]
4366 async fn test_autoclose_pairs(mut cx: gpui::TestAppContext) {
4367 let settings = cx.read(EditorSettings::test);
4368 let language = Arc::new(Language::new(
4369 LanguageConfig {
4370 autoclose_pairs: vec![
4371 AutoclosePair {
4372 start: "{".to_string(),
4373 end: "}".to_string(),
4374 },
4375 AutoclosePair {
4376 start: "/*".to_string(),
4377 end: " */".to_string(),
4378 },
4379 ],
4380 ..Default::default()
4381 },
4382 tree_sitter_rust::language(),
4383 ));
4384
4385 let text = r#"
4386 a
4387
4388 /
4389
4390 "#
4391 .unindent();
4392
4393 let buffer = cx.add_model(|cx| {
4394 let history = History::new(text.into());
4395 Buffer::from_history(0, history, None, Some(language), cx)
4396 });
4397 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
4398 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing())
4399 .await;
4400
4401 view.update(&mut cx, |view, cx| {
4402 view.select_display_ranges(
4403 &[
4404 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
4405 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4406 ],
4407 cx,
4408 )
4409 .unwrap();
4410 view.handle_input(&Input("{".to_string()), cx);
4411 view.handle_input(&Input("{".to_string()), cx);
4412 view.handle_input(&Input("{".to_string()), cx);
4413 assert_eq!(
4414 view.text(cx),
4415 "
4416 {{{}}}
4417 {{{}}}
4418 /
4419
4420 "
4421 .unindent()
4422 );
4423
4424 view.move_right(&MoveRight, cx);
4425 view.handle_input(&Input("}".to_string()), cx);
4426 view.handle_input(&Input("}".to_string()), cx);
4427 view.handle_input(&Input("}".to_string()), cx);
4428 assert_eq!(
4429 view.text(cx),
4430 "
4431 {{{}}}}
4432 {{{}}}}
4433 /
4434
4435 "
4436 .unindent()
4437 );
4438
4439 view.undo(&Undo, cx);
4440 view.handle_input(&Input("/".to_string()), cx);
4441 view.handle_input(&Input("*".to_string()), cx);
4442 assert_eq!(
4443 view.text(cx),
4444 "
4445 /* */
4446 /* */
4447 /
4448
4449 "
4450 .unindent()
4451 );
4452
4453 view.undo(&Undo, cx);
4454 view.select_display_ranges(
4455 &[
4456 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4457 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
4458 ],
4459 cx,
4460 )
4461 .unwrap();
4462 view.handle_input(&Input("*".to_string()), cx);
4463 assert_eq!(
4464 view.text(cx),
4465 "
4466 a
4467
4468 /*
4469 *
4470 "
4471 .unindent()
4472 );
4473 });
4474 }
4475
4476 impl Editor {
4477 fn selection_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
4478 self.selections_in_range(
4479 self.selection_set_id,
4480 DisplayPoint::zero()..self.max_point(cx),
4481 cx,
4482 )
4483 .collect::<Vec<_>>()
4484 }
4485 }
4486
4487 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
4488 let point = DisplayPoint::new(row as u32, column as u32);
4489 point..point
4490 }
4491
4492 fn build_editor(
4493 buffer: ModelHandle<Buffer>,
4494 settings: EditorSettings,
4495 cx: &mut ViewContext<Editor>,
4496 ) -> Editor {
4497 Editor::for_buffer(buffer, move |_| settings.clone(), cx)
4498 }
4499}
4500
4501trait RangeExt<T> {
4502 fn sorted(&self) -> Range<T>;
4503 fn to_inclusive(&self) -> RangeInclusive<T>;
4504}
4505
4506impl<T: Ord + Clone> RangeExt<T> for Range<T> {
4507 fn sorted(&self) -> Self {
4508 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
4509 }
4510
4511 fn to_inclusive(&self) -> RangeInclusive<T> {
4512 self.start.clone()..=self.end.clone()
4513 }
4514}