1pub mod display_map;
2mod element;
3pub mod movement;
4
5#[cfg(test)]
6mod test;
7
8use buffer::rope::TextDimension;
9use clock::ReplicaId;
10use display_map::*;
11pub use display_map::{DisplayPoint, DisplayRow};
12pub use element::*;
13use gpui::{
14 action,
15 geometry::vector::{vec2f, Vector2F},
16 keymap::Binding,
17 text_layout, AppContext, ClipboardItem, Element, ElementBox, Entity, ModelHandle,
18 MutableAppContext, RenderContext, View, ViewContext, WeakViewHandle,
19};
20use language::*;
21use serde::{Deserialize, Serialize};
22use smallvec::SmallVec;
23use smol::Timer;
24use std::{
25 cell::RefCell,
26 cmp::{self, Ordering},
27 collections::HashMap,
28 iter, mem,
29 ops::{Range, RangeInclusive},
30 rc::Rc,
31 sync::Arc,
32 time::Duration,
33};
34use sum_tree::Bias;
35use theme::{DiagnosticStyle, EditorStyle, SyntaxTheme};
36use util::post_inc;
37
38const CURSOR_BLINK_INTERVAL: Duration = Duration::from_millis(500);
39const MAX_LINE_LEN: usize = 1024;
40
41action!(Cancel);
42action!(Backspace);
43action!(Delete);
44action!(Input, String);
45action!(Newline);
46action!(Tab);
47action!(DeleteLine);
48action!(DeleteToPreviousWordBoundary);
49action!(DeleteToNextWordBoundary);
50action!(DeleteToBeginningOfLine);
51action!(DeleteToEndOfLine);
52action!(CutToEndOfLine);
53action!(DuplicateLine);
54action!(MoveLineUp);
55action!(MoveLineDown);
56action!(Cut);
57action!(Copy);
58action!(Paste);
59action!(Undo);
60action!(Redo);
61action!(MoveUp);
62action!(MoveDown);
63action!(MoveLeft);
64action!(MoveRight);
65action!(MoveToPreviousWordBoundary);
66action!(MoveToNextWordBoundary);
67action!(MoveToBeginningOfLine);
68action!(MoveToEndOfLine);
69action!(MoveToBeginning);
70action!(MoveToEnd);
71action!(SelectUp);
72action!(SelectDown);
73action!(SelectLeft);
74action!(SelectRight);
75action!(SelectToPreviousWordBoundary);
76action!(SelectToNextWordBoundary);
77action!(SelectToBeginningOfLine, bool);
78action!(SelectToEndOfLine);
79action!(SelectToBeginning);
80action!(SelectToEnd);
81action!(SelectAll);
82action!(SelectLine);
83action!(SplitSelectionIntoLines);
84action!(AddSelectionAbove);
85action!(AddSelectionBelow);
86action!(SelectLargerSyntaxNode);
87action!(SelectSmallerSyntaxNode);
88action!(MoveToEnclosingBracket);
89action!(ShowNextDiagnostic);
90action!(PageUp);
91action!(PageDown);
92action!(Fold);
93action!(Unfold);
94action!(FoldSelectedRanges);
95action!(Scroll, Vector2F);
96action!(Select, SelectPhase);
97
98pub fn init(cx: &mut MutableAppContext) {
99 cx.add_bindings(vec![
100 Binding::new("escape", Cancel, Some("Editor")),
101 Binding::new("backspace", Backspace, Some("Editor")),
102 Binding::new("ctrl-h", Backspace, Some("Editor")),
103 Binding::new("delete", Delete, Some("Editor")),
104 Binding::new("ctrl-d", Delete, Some("Editor")),
105 Binding::new("enter", Newline, Some("Editor && mode == full")),
106 Binding::new(
107 "alt-enter",
108 Input("\n".into()),
109 Some("Editor && mode == auto_height"),
110 ),
111 Binding::new("tab", Tab, Some("Editor")),
112 Binding::new("ctrl-shift-K", DeleteLine, Some("Editor")),
113 Binding::new(
114 "alt-backspace",
115 DeleteToPreviousWordBoundary,
116 Some("Editor"),
117 ),
118 Binding::new("alt-h", DeleteToPreviousWordBoundary, Some("Editor")),
119 Binding::new("alt-delete", DeleteToNextWordBoundary, Some("Editor")),
120 Binding::new("alt-d", DeleteToNextWordBoundary, Some("Editor")),
121 Binding::new("cmd-backspace", DeleteToBeginningOfLine, Some("Editor")),
122 Binding::new("cmd-delete", DeleteToEndOfLine, Some("Editor")),
123 Binding::new("ctrl-k", CutToEndOfLine, Some("Editor")),
124 Binding::new("cmd-shift-D", DuplicateLine, Some("Editor")),
125 Binding::new("ctrl-cmd-up", MoveLineUp, Some("Editor")),
126 Binding::new("ctrl-cmd-down", MoveLineDown, Some("Editor")),
127 Binding::new("cmd-x", Cut, Some("Editor")),
128 Binding::new("cmd-c", Copy, Some("Editor")),
129 Binding::new("cmd-v", Paste, Some("Editor")),
130 Binding::new("cmd-z", Undo, Some("Editor")),
131 Binding::new("cmd-shift-Z", Redo, Some("Editor")),
132 Binding::new("up", MoveUp, Some("Editor")),
133 Binding::new("down", MoveDown, Some("Editor")),
134 Binding::new("left", MoveLeft, Some("Editor")),
135 Binding::new("right", MoveRight, Some("Editor")),
136 Binding::new("ctrl-p", MoveUp, Some("Editor")),
137 Binding::new("ctrl-n", MoveDown, Some("Editor")),
138 Binding::new("ctrl-b", MoveLeft, Some("Editor")),
139 Binding::new("ctrl-f", MoveRight, Some("Editor")),
140 Binding::new("alt-left", MoveToPreviousWordBoundary, Some("Editor")),
141 Binding::new("alt-b", MoveToPreviousWordBoundary, Some("Editor")),
142 Binding::new("alt-right", MoveToNextWordBoundary, Some("Editor")),
143 Binding::new("alt-f", MoveToNextWordBoundary, Some("Editor")),
144 Binding::new("cmd-left", MoveToBeginningOfLine, Some("Editor")),
145 Binding::new("ctrl-a", MoveToBeginningOfLine, Some("Editor")),
146 Binding::new("cmd-right", MoveToEndOfLine, Some("Editor")),
147 Binding::new("ctrl-e", MoveToEndOfLine, Some("Editor")),
148 Binding::new("cmd-up", MoveToBeginning, Some("Editor")),
149 Binding::new("cmd-down", MoveToEnd, Some("Editor")),
150 Binding::new("shift-up", SelectUp, Some("Editor")),
151 Binding::new("ctrl-shift-P", SelectUp, Some("Editor")),
152 Binding::new("shift-down", SelectDown, Some("Editor")),
153 Binding::new("ctrl-shift-N", SelectDown, Some("Editor")),
154 Binding::new("shift-left", SelectLeft, Some("Editor")),
155 Binding::new("ctrl-shift-B", SelectLeft, Some("Editor")),
156 Binding::new("shift-right", SelectRight, Some("Editor")),
157 Binding::new("ctrl-shift-F", SelectRight, Some("Editor")),
158 Binding::new(
159 "alt-shift-left",
160 SelectToPreviousWordBoundary,
161 Some("Editor"),
162 ),
163 Binding::new("alt-shift-B", SelectToPreviousWordBoundary, Some("Editor")),
164 Binding::new("alt-shift-right", SelectToNextWordBoundary, Some("Editor")),
165 Binding::new("alt-shift-F", SelectToNextWordBoundary, Some("Editor")),
166 Binding::new(
167 "cmd-shift-left",
168 SelectToBeginningOfLine(true),
169 Some("Editor"),
170 ),
171 Binding::new(
172 "ctrl-shift-A",
173 SelectToBeginningOfLine(true),
174 Some("Editor"),
175 ),
176 Binding::new("cmd-shift-right", SelectToEndOfLine, Some("Editor")),
177 Binding::new("ctrl-shift-E", SelectToEndOfLine, Some("Editor")),
178 Binding::new("cmd-shift-up", SelectToBeginning, Some("Editor")),
179 Binding::new("cmd-shift-down", SelectToEnd, Some("Editor")),
180 Binding::new("cmd-a", SelectAll, Some("Editor")),
181 Binding::new("cmd-l", SelectLine, Some("Editor")),
182 Binding::new("cmd-shift-L", SplitSelectionIntoLines, Some("Editor")),
183 Binding::new("cmd-alt-up", AddSelectionAbove, Some("Editor")),
184 Binding::new("cmd-ctrl-p", AddSelectionAbove, Some("Editor")),
185 Binding::new("cmd-alt-down", AddSelectionBelow, Some("Editor")),
186 Binding::new("cmd-ctrl-n", AddSelectionBelow, Some("Editor")),
187 Binding::new("alt-up", SelectLargerSyntaxNode, Some("Editor")),
188 Binding::new("ctrl-w", SelectLargerSyntaxNode, Some("Editor")),
189 Binding::new("alt-down", SelectSmallerSyntaxNode, Some("Editor")),
190 Binding::new("ctrl-shift-W", SelectSmallerSyntaxNode, Some("Editor")),
191 Binding::new("f8", ShowNextDiagnostic, Some("Editor")),
192 Binding::new("ctrl-m", MoveToEnclosingBracket, Some("Editor")),
193 Binding::new("pageup", PageUp, Some("Editor")),
194 Binding::new("pagedown", PageDown, Some("Editor")),
195 Binding::new("alt-cmd-[", Fold, Some("Editor")),
196 Binding::new("alt-cmd-]", Unfold, Some("Editor")),
197 Binding::new("alt-cmd-f", FoldSelectedRanges, Some("Editor")),
198 ]);
199
200 cx.add_action(|this: &mut Editor, action: &Scroll, cx| this.set_scroll_position(action.0, cx));
201 cx.add_action(Editor::select);
202 cx.add_action(Editor::cancel);
203 cx.add_action(Editor::handle_input);
204 cx.add_action(Editor::newline);
205 cx.add_action(Editor::backspace);
206 cx.add_action(Editor::delete);
207 cx.add_action(Editor::tab);
208 cx.add_action(Editor::delete_line);
209 cx.add_action(Editor::delete_to_previous_word_boundary);
210 cx.add_action(Editor::delete_to_next_word_boundary);
211 cx.add_action(Editor::delete_to_beginning_of_line);
212 cx.add_action(Editor::delete_to_end_of_line);
213 cx.add_action(Editor::cut_to_end_of_line);
214 cx.add_action(Editor::duplicate_line);
215 cx.add_action(Editor::move_line_up);
216 cx.add_action(Editor::move_line_down);
217 cx.add_action(Editor::cut);
218 cx.add_action(Editor::copy);
219 cx.add_action(Editor::paste);
220 cx.add_action(Editor::undo);
221 cx.add_action(Editor::redo);
222 cx.add_action(Editor::move_up);
223 cx.add_action(Editor::move_down);
224 cx.add_action(Editor::move_left);
225 cx.add_action(Editor::move_right);
226 cx.add_action(Editor::move_to_previous_word_boundary);
227 cx.add_action(Editor::move_to_next_word_boundary);
228 cx.add_action(Editor::move_to_beginning_of_line);
229 cx.add_action(Editor::move_to_end_of_line);
230 cx.add_action(Editor::move_to_beginning);
231 cx.add_action(Editor::move_to_end);
232 cx.add_action(Editor::select_up);
233 cx.add_action(Editor::select_down);
234 cx.add_action(Editor::select_left);
235 cx.add_action(Editor::select_right);
236 cx.add_action(Editor::select_to_previous_word_boundary);
237 cx.add_action(Editor::select_to_next_word_boundary);
238 cx.add_action(Editor::select_to_beginning_of_line);
239 cx.add_action(Editor::select_to_end_of_line);
240 cx.add_action(Editor::select_to_beginning);
241 cx.add_action(Editor::select_to_end);
242 cx.add_action(Editor::select_all);
243 cx.add_action(Editor::select_line);
244 cx.add_action(Editor::split_selection_into_lines);
245 cx.add_action(Editor::add_selection_above);
246 cx.add_action(Editor::add_selection_below);
247 cx.add_action(Editor::select_larger_syntax_node);
248 cx.add_action(Editor::select_smaller_syntax_node);
249 cx.add_action(Editor::move_to_enclosing_bracket);
250 cx.add_action(Editor::show_next_diagnostic);
251 cx.add_action(Editor::page_up);
252 cx.add_action(Editor::page_down);
253 cx.add_action(Editor::fold);
254 cx.add_action(Editor::unfold);
255 cx.add_action(Editor::fold_selected_ranges);
256}
257
258trait SelectionExt {
259 fn display_range(&self, map: &DisplayMapSnapshot) -> Range<DisplayPoint>;
260 fn spanned_rows(
261 &self,
262 include_end_if_at_line_start: bool,
263 map: &DisplayMapSnapshot,
264 ) -> SpannedRows;
265}
266
267struct SpannedRows {
268 buffer_rows: Range<u32>,
269 display_rows: Range<u32>,
270}
271
272#[derive(Clone, Debug)]
273pub enum SelectPhase {
274 Begin {
275 position: DisplayPoint,
276 add: bool,
277 },
278 Update {
279 position: DisplayPoint,
280 scroll_position: Vector2F,
281 },
282 End,
283}
284
285#[derive(Copy, Clone, PartialEq, Eq)]
286pub enum EditorMode {
287 SingleLine,
288 AutoHeight { max_lines: usize },
289 Full,
290}
291
292#[derive(Clone)]
293pub struct EditorSettings {
294 pub tab_size: usize,
295 pub style: EditorStyle,
296}
297
298pub struct Editor {
299 handle: WeakViewHandle<Self>,
300 buffer: ModelHandle<Buffer>,
301 display_map: ModelHandle<DisplayMap>,
302 selection_set_id: SelectionSetId,
303 pending_selection: Option<Selection<Anchor>>,
304 next_selection_id: usize,
305 add_selections_state: Option<AddSelectionsState>,
306 autoclose_stack: Vec<BracketPairState>,
307 select_larger_syntax_node_stack: Vec<Box<[Selection<usize>]>>,
308 active_diagnostics: Option<ActiveDiagnosticGroup>,
309 scroll_position: Vector2F,
310 scroll_top_anchor: Anchor,
311 autoscroll_requested: bool,
312 build_settings: Rc<RefCell<dyn Fn(&AppContext) -> EditorSettings>>,
313 focused: bool,
314 show_local_cursors: bool,
315 blink_epoch: usize,
316 blinking_paused: bool,
317 mode: EditorMode,
318 placeholder_text: Option<Arc<str>>,
319}
320
321pub struct Snapshot {
322 pub mode: EditorMode,
323 pub display_snapshot: DisplayMapSnapshot,
324 pub placeholder_text: Option<Arc<str>>,
325 is_focused: bool,
326 scroll_position: Vector2F,
327 scroll_top_anchor: Anchor,
328}
329
330struct AddSelectionsState {
331 above: bool,
332 stack: Vec<usize>,
333}
334
335#[derive(Debug)]
336struct BracketPairState {
337 ranges: AnchorRangeSet,
338 pair: BracketPair,
339}
340
341#[derive(Debug)]
342struct ActiveDiagnosticGroup {
343 primary_range: Range<Anchor>,
344 primary_message: String,
345 blocks: HashMap<BlockId, Diagnostic>,
346 is_valid: bool,
347}
348
349#[derive(Serialize, Deserialize)]
350struct ClipboardSelection {
351 len: usize,
352 is_entire_line: bool,
353}
354
355impl Editor {
356 pub fn single_line(
357 build_settings: impl 'static + Fn(&AppContext) -> EditorSettings,
358 cx: &mut ViewContext<Self>,
359 ) -> Self {
360 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
361 let mut view = Self::for_buffer(buffer, build_settings, cx);
362 view.mode = EditorMode::SingleLine;
363 view
364 }
365
366 pub fn auto_height(
367 max_lines: usize,
368 build_settings: impl 'static + Fn(&AppContext) -> EditorSettings,
369 cx: &mut ViewContext<Self>,
370 ) -> Self {
371 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
372 let mut view = Self::for_buffer(buffer, build_settings, cx);
373 view.mode = EditorMode::AutoHeight { max_lines };
374 view
375 }
376
377 pub fn for_buffer(
378 buffer: ModelHandle<Buffer>,
379 build_settings: impl 'static + Fn(&AppContext) -> EditorSettings,
380 cx: &mut ViewContext<Self>,
381 ) -> Self {
382 Self::new(buffer, Rc::new(RefCell::new(build_settings)), cx)
383 }
384
385 pub fn clone(&self, cx: &mut ViewContext<Self>) -> Self {
386 let mut clone = Self::new(self.buffer.clone(), self.build_settings.clone(), cx);
387 clone.scroll_position = self.scroll_position;
388 clone.scroll_top_anchor = self.scroll_top_anchor.clone();
389 clone
390 }
391
392 pub fn new(
393 buffer: ModelHandle<Buffer>,
394 build_settings: Rc<RefCell<dyn Fn(&AppContext) -> EditorSettings>>,
395 cx: &mut ViewContext<Self>,
396 ) -> Self {
397 let settings = build_settings.borrow_mut()(cx);
398 let display_map = cx.add_model(|cx| {
399 DisplayMap::new(
400 buffer.clone(),
401 settings.tab_size,
402 settings.style.text.font_id,
403 settings.style.text.font_size,
404 None,
405 cx,
406 )
407 });
408 cx.observe(&buffer, Self::on_buffer_changed).detach();
409 cx.subscribe(&buffer, Self::on_buffer_event).detach();
410 cx.observe(&display_map, Self::on_display_map_changed)
411 .detach();
412
413 let mut next_selection_id = 0;
414 let selection_set_id = buffer.update(cx, |buffer, cx| {
415 buffer.add_selection_set(
416 &[Selection {
417 id: post_inc(&mut next_selection_id),
418 start: 0,
419 end: 0,
420 reversed: false,
421 goal: SelectionGoal::None,
422 }],
423 cx,
424 )
425 });
426 Self {
427 handle: cx.handle().downgrade(),
428 buffer,
429 display_map,
430 selection_set_id,
431 pending_selection: None,
432 next_selection_id,
433 add_selections_state: None,
434 autoclose_stack: Default::default(),
435 select_larger_syntax_node_stack: Vec::new(),
436 active_diagnostics: None,
437 build_settings,
438 scroll_position: Vector2F::zero(),
439 scroll_top_anchor: Anchor::min(),
440 autoscroll_requested: false,
441 focused: false,
442 show_local_cursors: false,
443 blink_epoch: 0,
444 blinking_paused: false,
445 mode: EditorMode::Full,
446 placeholder_text: None,
447 }
448 }
449
450 pub fn replica_id(&self, cx: &AppContext) -> ReplicaId {
451 self.buffer.read(cx).replica_id()
452 }
453
454 pub fn buffer(&self) -> &ModelHandle<Buffer> {
455 &self.buffer
456 }
457
458 pub fn snapshot(&mut self, cx: &mut MutableAppContext) -> Snapshot {
459 Snapshot {
460 mode: self.mode,
461 display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
462 scroll_position: self.scroll_position,
463 scroll_top_anchor: self.scroll_top_anchor.clone(),
464 placeholder_text: self.placeholder_text.clone(),
465 is_focused: self
466 .handle
467 .upgrade(cx)
468 .map_or(false, |handle| handle.is_focused(cx)),
469 }
470 }
471
472 pub fn language<'a>(&self, cx: &'a AppContext) -> Option<&'a Arc<Language>> {
473 self.buffer.read(cx).language()
474 }
475
476 pub fn set_placeholder_text(
477 &mut self,
478 placeholder_text: impl Into<Arc<str>>,
479 cx: &mut ViewContext<Self>,
480 ) {
481 self.placeholder_text = Some(placeholder_text.into());
482 cx.notify();
483 }
484
485 fn set_scroll_position(&mut self, scroll_position: Vector2F, cx: &mut ViewContext<Self>) {
486 let map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
487 let scroll_top_buffer_offset =
488 DisplayPoint::new(scroll_position.y() as u32, 0).to_offset(&map, Bias::Right);
489 self.scroll_top_anchor = self
490 .buffer
491 .read(cx)
492 .anchor_at(scroll_top_buffer_offset, Bias::Right);
493 self.scroll_position = vec2f(
494 scroll_position.x(),
495 scroll_position.y() - self.scroll_top_anchor.to_display_point(&map).row() as f32,
496 );
497
498 debug_assert_eq!(
499 compute_scroll_position(&map, self.scroll_position, &self.scroll_top_anchor),
500 scroll_position
501 );
502
503 cx.notify();
504 }
505
506 pub fn clamp_scroll_left(&mut self, max: f32) -> bool {
507 if max < self.scroll_position.x() {
508 self.scroll_position.set_x(max);
509 true
510 } else {
511 false
512 }
513 }
514
515 pub fn autoscroll_vertically(
516 &mut self,
517 viewport_height: f32,
518 line_height: f32,
519 cx: &mut ViewContext<Self>,
520 ) -> bool {
521 let visible_lines = viewport_height / line_height;
522 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
523 let mut scroll_position =
524 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor);
525 let max_scroll_top = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
526 (display_map.max_point().row() as f32 - visible_lines + 1.).max(0.)
527 } else {
528 display_map.max_point().row().saturating_sub(1) as f32
529 };
530 if scroll_position.y() > max_scroll_top {
531 scroll_position.set_y(max_scroll_top);
532 self.set_scroll_position(scroll_position, cx);
533 }
534
535 if self.autoscroll_requested {
536 self.autoscroll_requested = false;
537 } else {
538 return false;
539 }
540
541 let mut selections = self.selections::<Point>(cx).peekable();
542 let first_cursor_top = selections
543 .peek()
544 .unwrap()
545 .head()
546 .to_display_point(&display_map)
547 .row() as f32;
548 let last_cursor_bottom = selections
549 .last()
550 .unwrap()
551 .head()
552 .to_display_point(&display_map)
553 .row() as f32
554 + 1.0;
555
556 let margin = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
557 0.
558 } else {
559 ((visible_lines - (last_cursor_bottom - first_cursor_top)) / 2.0)
560 .floor()
561 .min(3.0)
562 };
563 if margin < 0.0 {
564 return false;
565 }
566
567 let target_top = (first_cursor_top - margin).max(0.0);
568 let target_bottom = last_cursor_bottom + margin;
569 let start_row = scroll_position.y();
570 let end_row = start_row + visible_lines;
571
572 if target_top < start_row {
573 scroll_position.set_y(target_top);
574 self.set_scroll_position(scroll_position, cx);
575 } else if target_bottom >= end_row {
576 scroll_position.set_y(target_bottom - visible_lines);
577 self.set_scroll_position(scroll_position, cx);
578 }
579
580 true
581 }
582
583 pub fn autoscroll_horizontally(
584 &mut self,
585 start_row: u32,
586 viewport_width: f32,
587 scroll_width: f32,
588 max_glyph_width: f32,
589 layouts: &[text_layout::Line],
590 cx: &mut ViewContext<Self>,
591 ) -> bool {
592 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
593 let selections = self.selections::<Point>(cx);
594 let mut target_left = std::f32::INFINITY;
595 let mut target_right = 0.0_f32;
596 for selection in selections {
597 let head = selection.head().to_display_point(&display_map);
598 let start_column = head.column().saturating_sub(3);
599 let end_column = cmp::min(display_map.line_len(head.row()), head.column() + 3);
600 target_left = target_left
601 .min(layouts[(head.row() - start_row) as usize].x_for_index(start_column as usize));
602 target_right = target_right.max(
603 layouts[(head.row() - start_row) as usize].x_for_index(end_column as usize)
604 + max_glyph_width,
605 );
606 }
607 target_right = target_right.min(scroll_width);
608
609 if target_right - target_left > viewport_width {
610 return false;
611 }
612
613 let scroll_left = self.scroll_position.x() * max_glyph_width;
614 let scroll_right = scroll_left + viewport_width;
615
616 if target_left < scroll_left {
617 self.scroll_position.set_x(target_left / max_glyph_width);
618 true
619 } else if target_right > scroll_right {
620 self.scroll_position
621 .set_x((target_right - viewport_width) / max_glyph_width);
622 true
623 } else {
624 false
625 }
626 }
627
628 fn select(&mut self, Select(phase): &Select, cx: &mut ViewContext<Self>) {
629 match phase {
630 SelectPhase::Begin { position, add } => self.begin_selection(*position, *add, cx),
631 SelectPhase::Update {
632 position,
633 scroll_position,
634 } => self.update_selection(*position, *scroll_position, cx),
635 SelectPhase::End => self.end_selection(cx),
636 }
637 }
638
639 fn begin_selection(&mut self, position: DisplayPoint, add: bool, cx: &mut ViewContext<Self>) {
640 if !self.focused {
641 cx.focus_self();
642 cx.emit(Event::Activate);
643 }
644
645 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
646 let buffer = self.buffer.read(cx);
647 let cursor = buffer.anchor_before(position.to_point(&display_map));
648 let selection = Selection {
649 id: post_inc(&mut self.next_selection_id),
650 start: cursor.clone(),
651 end: cursor,
652 reversed: false,
653 goal: SelectionGoal::None,
654 };
655
656 if !add {
657 self.update_selections::<usize>(Vec::new(), false, cx);
658 }
659 self.pending_selection = Some(selection);
660
661 cx.notify();
662 }
663
664 fn update_selection(
665 &mut self,
666 position: DisplayPoint,
667 scroll_position: Vector2F,
668 cx: &mut ViewContext<Self>,
669 ) {
670 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
671 if let Some(pending_selection) = self.pending_selection.as_mut() {
672 let buffer = self.buffer.read(cx);
673 let cursor = buffer.anchor_before(position.to_point(&display_map));
674 if cursor.cmp(&pending_selection.tail(), buffer).unwrap() < Ordering::Equal {
675 if !pending_selection.reversed {
676 pending_selection.end = pending_selection.start.clone();
677 pending_selection.reversed = true;
678 }
679 pending_selection.start = cursor;
680 } else {
681 if pending_selection.reversed {
682 pending_selection.start = pending_selection.end.clone();
683 pending_selection.reversed = false;
684 }
685 pending_selection.end = cursor;
686 }
687 } else {
688 log::error!("update_selection dispatched with no pending selection");
689 return;
690 }
691
692 self.set_scroll_position(scroll_position, cx);
693 cx.notify();
694 }
695
696 fn end_selection(&mut self, cx: &mut ViewContext<Self>) {
697 if self.pending_selection.is_some() {
698 let selections = self.selections::<usize>(cx).collect::<Vec<_>>();
699 self.update_selections(selections, false, cx);
700 }
701 }
702
703 pub fn is_selecting(&self) -> bool {
704 self.pending_selection.is_some()
705 }
706
707 pub fn cancel(&mut self, _: &Cancel, cx: &mut ViewContext<Self>) {
708 if self.active_diagnostics.is_some() {
709 self.dismiss_diagnostics(cx);
710 } else if let Some(pending_selection) = self.pending_selection.take() {
711 let buffer = self.buffer.read(cx);
712 let pending_selection = Selection {
713 id: pending_selection.id,
714 start: pending_selection.start.to_point(buffer),
715 end: pending_selection.end.to_point(buffer),
716 reversed: pending_selection.reversed,
717 goal: pending_selection.goal,
718 };
719 if self.selections::<Point>(cx).next().is_none() {
720 self.update_selections(vec![pending_selection], true, cx);
721 }
722 } else {
723 let mut oldest_selection = self.oldest_selection::<usize>(cx);
724 if self.selection_count(cx) == 1 {
725 oldest_selection.start = oldest_selection.head().clone();
726 oldest_selection.end = oldest_selection.head().clone();
727 }
728 self.update_selections(vec![oldest_selection], true, cx);
729 }
730 }
731
732 fn select_ranges<I, T>(&mut self, ranges: I, autoscroll: bool, cx: &mut ViewContext<Self>)
733 where
734 I: IntoIterator<Item = Range<T>>,
735 T: ToOffset,
736 {
737 let buffer = self.buffer.read(cx);
738 let selections = ranges
739 .into_iter()
740 .map(|range| {
741 let mut start = range.start.to_offset(buffer);
742 let mut end = range.end.to_offset(buffer);
743 let reversed = if start > end {
744 mem::swap(&mut start, &mut end);
745 true
746 } else {
747 false
748 };
749 Selection {
750 id: post_inc(&mut self.next_selection_id),
751 start: start,
752 end: end,
753 reversed,
754 goal: SelectionGoal::None,
755 }
756 })
757 .collect();
758 self.update_selections(selections, autoscroll, cx);
759 }
760
761 #[cfg(test)]
762 fn select_display_ranges<'a, T>(
763 &mut self,
764 ranges: T,
765 cx: &mut ViewContext<Self>,
766 ) -> anyhow::Result<()>
767 where
768 T: IntoIterator<Item = &'a Range<DisplayPoint>>,
769 {
770 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
771 let selections = ranges
772 .into_iter()
773 .map(|range| {
774 let mut start = range.start;
775 let mut end = range.end;
776 let reversed = if start > end {
777 mem::swap(&mut start, &mut end);
778 true
779 } else {
780 false
781 };
782 Selection {
783 id: post_inc(&mut self.next_selection_id),
784 start: start.to_point(&display_map),
785 end: end.to_point(&display_map),
786 reversed,
787 goal: SelectionGoal::None,
788 }
789 })
790 .collect();
791 self.update_selections(selections, false, cx);
792 Ok(())
793 }
794
795 pub fn handle_input(&mut self, action: &Input, cx: &mut ViewContext<Self>) {
796 let text = action.0.as_ref();
797 if !self.skip_autoclose_end(text, cx) {
798 self.start_transaction(cx);
799 self.insert(text, cx);
800 self.autoclose_pairs(cx);
801 self.end_transaction(cx);
802 }
803 }
804
805 pub fn newline(&mut self, _: &Newline, cx: &mut ViewContext<Self>) {
806 self.start_transaction(cx);
807 let mut old_selections = SmallVec::<[_; 32]>::new();
808 {
809 let selections = self.selections::<Point>(cx).collect::<Vec<_>>();
810 let buffer = self.buffer.read(cx);
811 for selection in selections.iter() {
812 let start_point = selection.start;
813 let indent = buffer
814 .indent_column_for_line(start_point.row)
815 .min(start_point.column);
816 let start = selection.start.to_offset(buffer);
817 let end = selection.end.to_offset(buffer);
818
819 let mut insert_extra_newline = false;
820 if let Some(language) = buffer.language() {
821 let leading_whitespace_len = buffer
822 .reversed_chars_at(start)
823 .take_while(|c| c.is_whitespace() && *c != '\n')
824 .map(|c| c.len_utf8())
825 .sum::<usize>();
826
827 let trailing_whitespace_len = buffer
828 .chars_at(end)
829 .take_while(|c| c.is_whitespace() && *c != '\n')
830 .map(|c| c.len_utf8())
831 .sum::<usize>();
832
833 insert_extra_newline = language.brackets().iter().any(|pair| {
834 let pair_start = pair.start.trim_end();
835 let pair_end = pair.end.trim_start();
836
837 pair.newline
838 && buffer.contains_str_at(end + trailing_whitespace_len, pair_end)
839 && buffer.contains_str_at(
840 (start - leading_whitespace_len).saturating_sub(pair_start.len()),
841 pair_start,
842 )
843 });
844 }
845
846 old_selections.push((selection.id, start..end, indent, insert_extra_newline));
847 }
848 }
849
850 let mut new_selections = Vec::with_capacity(old_selections.len());
851 self.buffer.update(cx, |buffer, cx| {
852 let mut delta = 0_isize;
853 let mut pending_edit: Option<PendingEdit> = None;
854 for (_, range, indent, insert_extra_newline) in &old_selections {
855 if pending_edit.as_ref().map_or(false, |pending| {
856 pending.indent != *indent
857 || pending.insert_extra_newline != *insert_extra_newline
858 }) {
859 let pending = pending_edit.take().unwrap();
860 let mut new_text = String::with_capacity(1 + pending.indent as usize);
861 new_text.push('\n');
862 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
863 if pending.insert_extra_newline {
864 new_text = new_text.repeat(2);
865 }
866 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
867 delta += pending.delta;
868 }
869
870 let start = (range.start as isize + delta) as usize;
871 let end = (range.end as isize + delta) as usize;
872 let mut text_len = *indent as usize + 1;
873 if *insert_extra_newline {
874 text_len *= 2;
875 }
876
877 let pending = pending_edit.get_or_insert_with(Default::default);
878 pending.delta += text_len as isize - (end - start) as isize;
879 pending.indent = *indent;
880 pending.insert_extra_newline = *insert_extra_newline;
881 pending.ranges.push(start..end);
882 }
883
884 let pending = pending_edit.unwrap();
885 let mut new_text = String::with_capacity(1 + pending.indent as usize);
886 new_text.push('\n');
887 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
888 if pending.insert_extra_newline {
889 new_text = new_text.repeat(2);
890 }
891 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
892
893 let mut delta = 0_isize;
894 new_selections.extend(old_selections.into_iter().map(
895 |(id, range, indent, insert_extra_newline)| {
896 let start = (range.start as isize + delta) as usize;
897 let end = (range.end as isize + delta) as usize;
898 let text_before_cursor_len = indent as usize + 1;
899 let cursor = start + text_before_cursor_len;
900 let text_len = if insert_extra_newline {
901 text_before_cursor_len * 2
902 } else {
903 text_before_cursor_len
904 };
905 delta += text_len as isize - (end - start) as isize;
906 Selection {
907 id,
908 start: cursor,
909 end: cursor,
910 reversed: false,
911 goal: SelectionGoal::None,
912 }
913 },
914 ))
915 });
916
917 self.update_selections(new_selections, true, cx);
918 self.end_transaction(cx);
919
920 #[derive(Default)]
921 struct PendingEdit {
922 indent: u32,
923 insert_extra_newline: bool,
924 delta: isize,
925 ranges: SmallVec<[Range<usize>; 32]>,
926 }
927 }
928
929 fn insert(&mut self, text: &str, cx: &mut ViewContext<Self>) {
930 self.start_transaction(cx);
931 let old_selections = self.selections::<usize>(cx).collect::<SmallVec<[_; 32]>>();
932 let mut new_selections = Vec::new();
933 self.buffer.update(cx, |buffer, cx| {
934 let edit_ranges = old_selections.iter().map(|s| s.start..s.end);
935 buffer.edit_with_autoindent(edit_ranges, text, cx);
936 let text_len = text.len() as isize;
937 let mut delta = 0_isize;
938 new_selections = old_selections
939 .into_iter()
940 .map(|selection| {
941 let start = selection.start as isize;
942 let end = selection.end as isize;
943 let cursor = (start + delta + text_len) as usize;
944 let deleted_count = end - start;
945 delta += text_len - deleted_count;
946 Selection {
947 id: selection.id,
948 start: cursor,
949 end: cursor,
950 reversed: false,
951 goal: SelectionGoal::None,
952 }
953 })
954 .collect();
955 });
956
957 self.update_selections(new_selections, true, cx);
958 self.end_transaction(cx);
959 }
960
961 fn autoclose_pairs(&mut self, cx: &mut ViewContext<Self>) {
962 let selections = self.selections::<usize>(cx).collect::<Vec<_>>();
963 let new_autoclose_pair_state = self.buffer.update(cx, |buffer, cx| {
964 let autoclose_pair = buffer.language().and_then(|language| {
965 let first_selection_start = selections.first().unwrap().start;
966 let pair = language.brackets().iter().find(|pair| {
967 buffer.contains_str_at(
968 first_selection_start.saturating_sub(pair.start.len()),
969 &pair.start,
970 )
971 });
972 pair.and_then(|pair| {
973 let should_autoclose = selections[1..].iter().all(|selection| {
974 buffer.contains_str_at(
975 selection.start.saturating_sub(pair.start.len()),
976 &pair.start,
977 )
978 });
979
980 if should_autoclose {
981 Some(pair.clone())
982 } else {
983 None
984 }
985 })
986 });
987
988 autoclose_pair.and_then(|pair| {
989 let selection_ranges = selections
990 .iter()
991 .map(|selection| {
992 let start = selection.start.to_offset(&*buffer);
993 start..start
994 })
995 .collect::<SmallVec<[_; 32]>>();
996
997 buffer.edit(selection_ranges, &pair.end, cx);
998
999 if pair.end.len() == 1 {
1000 let mut delta = 0;
1001 Some(BracketPairState {
1002 ranges: buffer.anchor_range_set(selections.iter().map(move |selection| {
1003 let offset = selection.start + delta;
1004 delta += 1;
1005 (offset, Bias::Left)..(offset, Bias::Right)
1006 })),
1007 pair,
1008 })
1009 } else {
1010 None
1011 }
1012 })
1013 });
1014 self.autoclose_stack.extend(new_autoclose_pair_state);
1015 }
1016
1017 fn skip_autoclose_end(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
1018 let old_selections = self.selections::<usize>(cx).collect::<Vec<_>>();
1019 let autoclose_pair_state = if let Some(autoclose_pair_state) = self.autoclose_stack.last() {
1020 autoclose_pair_state
1021 } else {
1022 return false;
1023 };
1024 if text != autoclose_pair_state.pair.end {
1025 return false;
1026 }
1027
1028 debug_assert_eq!(old_selections.len(), autoclose_pair_state.ranges.len());
1029
1030 let buffer = self.buffer.read(cx);
1031 if old_selections
1032 .iter()
1033 .zip(autoclose_pair_state.ranges.ranges::<usize, _>(buffer))
1034 .all(|(selection, autoclose_range)| {
1035 let autoclose_range_end = autoclose_range.end.to_offset(buffer);
1036 selection.is_empty() && selection.start == autoclose_range_end
1037 })
1038 {
1039 let new_selections = old_selections
1040 .into_iter()
1041 .map(|selection| {
1042 let cursor = selection.start + 1;
1043 Selection {
1044 id: selection.id,
1045 start: cursor,
1046 end: cursor,
1047 reversed: false,
1048 goal: SelectionGoal::None,
1049 }
1050 })
1051 .collect();
1052 self.autoclose_stack.pop();
1053 self.update_selections(new_selections, true, cx);
1054 true
1055 } else {
1056 false
1057 }
1058 }
1059
1060 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
1061 self.start_transaction(cx);
1062 self.select_all(&SelectAll, cx);
1063 self.insert("", cx);
1064 self.end_transaction(cx);
1065 }
1066
1067 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
1068 self.start_transaction(cx);
1069 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1070 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1071 for selection in &mut selections {
1072 if selection.is_empty() {
1073 let head = selection.head().to_display_point(&display_map);
1074 let cursor = movement::left(&display_map, head)
1075 .unwrap()
1076 .to_point(&display_map);
1077 selection.set_head(cursor);
1078 selection.goal = SelectionGoal::None;
1079 }
1080 }
1081 self.update_selections(selections, true, cx);
1082 self.insert("", cx);
1083 self.end_transaction(cx);
1084 }
1085
1086 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
1087 self.start_transaction(cx);
1088 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1089 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1090 for selection in &mut selections {
1091 if selection.is_empty() {
1092 let head = selection.head().to_display_point(&display_map);
1093 let cursor = movement::right(&display_map, head)
1094 .unwrap()
1095 .to_point(&display_map);
1096 selection.set_head(cursor);
1097 selection.goal = SelectionGoal::None;
1098 }
1099 }
1100 self.update_selections(selections, true, cx);
1101 self.insert(&"", cx);
1102 self.end_transaction(cx);
1103 }
1104
1105 pub fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
1106 self.start_transaction(cx);
1107 let tab_size = self.build_settings.borrow()(cx).tab_size;
1108 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1109 self.buffer.update(cx, |buffer, cx| {
1110 let mut last_indented_row = None;
1111 for selection in &mut selections {
1112 if selection.is_empty() {
1113 let char_column = buffer
1114 .chars_for_range(Point::new(selection.start.row, 0)..selection.start)
1115 .count();
1116 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
1117 buffer.edit(
1118 [selection.start..selection.start],
1119 " ".repeat(chars_to_next_tab_stop),
1120 cx,
1121 );
1122 selection.start.column += chars_to_next_tab_stop as u32;
1123 selection.end = selection.start;
1124 } else {
1125 for row in selection.start.row..=selection.end.row {
1126 if last_indented_row != Some(row) {
1127 let char_column = buffer.indent_column_for_line(row) as usize;
1128 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
1129 let row_start = Point::new(row, 0);
1130 buffer.edit(
1131 [row_start..row_start],
1132 " ".repeat(chars_to_next_tab_stop),
1133 cx,
1134 );
1135 last_indented_row = Some(row);
1136 }
1137 }
1138 }
1139 }
1140 });
1141
1142 self.update_selections(selections, true, cx);
1143 self.end_transaction(cx);
1144 }
1145
1146 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
1147 self.start_transaction(cx);
1148
1149 let selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1150 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1151 let buffer = self.buffer.read(cx);
1152
1153 let mut row_delta = 0;
1154 let mut new_cursors = Vec::new();
1155 let mut edit_ranges = Vec::new();
1156 let mut selections = selections.iter().peekable();
1157 while let Some(selection) = selections.next() {
1158 let mut rows = selection.spanned_rows(false, &display_map).buffer_rows;
1159 let goal_display_column = selection.head().to_display_point(&display_map).column();
1160
1161 // Accumulate contiguous regions of rows that we want to delete.
1162 while let Some(next_selection) = selections.peek() {
1163 let next_rows = next_selection.spanned_rows(false, &display_map).buffer_rows;
1164 if next_rows.start <= rows.end {
1165 rows.end = next_rows.end;
1166 selections.next().unwrap();
1167 } else {
1168 break;
1169 }
1170 }
1171
1172 let mut edit_start = Point::new(rows.start, 0).to_offset(buffer);
1173 let edit_end;
1174 let cursor_buffer_row;
1175 if buffer.max_point().row >= rows.end {
1176 // If there's a line after the range, delete the \n from the end of the row range
1177 // and position the cursor on the next line.
1178 edit_end = Point::new(rows.end, 0).to_offset(buffer);
1179 cursor_buffer_row = rows.start;
1180 } else {
1181 // If there isn't a line after the range, delete the \n from the line before the
1182 // start of the row range and position the cursor there.
1183 edit_start = edit_start.saturating_sub(1);
1184 edit_end = buffer.len();
1185 cursor_buffer_row = rows.start.saturating_sub(1);
1186 }
1187
1188 let mut cursor =
1189 Point::new(cursor_buffer_row - row_delta, 0).to_display_point(&display_map);
1190 *cursor.column_mut() =
1191 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
1192 row_delta += rows.len() as u32;
1193
1194 new_cursors.push((selection.id, cursor.to_point(&display_map)));
1195 edit_ranges.push(edit_start..edit_end);
1196 }
1197
1198 new_cursors.sort_unstable_by_key(|(_, point)| point.clone());
1199 let new_selections = new_cursors
1200 .into_iter()
1201 .map(|(id, cursor)| Selection {
1202 id,
1203 start: cursor,
1204 end: cursor,
1205 reversed: false,
1206 goal: SelectionGoal::None,
1207 })
1208 .collect();
1209 self.buffer
1210 .update(cx, |buffer, cx| buffer.edit(edit_ranges, "", cx));
1211 self.update_selections(new_selections, true, cx);
1212 self.end_transaction(cx);
1213 }
1214
1215 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
1216 self.start_transaction(cx);
1217
1218 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1219 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1220 let buffer = self.buffer.read(cx);
1221
1222 let mut edits = Vec::new();
1223 let mut selections_iter = selections.iter().peekable();
1224 while let Some(selection) = selections_iter.next() {
1225 // Avoid duplicating the same lines twice.
1226 let mut rows = selection.spanned_rows(false, &display_map).buffer_rows;
1227
1228 while let Some(next_selection) = selections_iter.peek() {
1229 let next_rows = next_selection.spanned_rows(false, &display_map).buffer_rows;
1230 if next_rows.start <= rows.end - 1 {
1231 rows.end = next_rows.end;
1232 selections_iter.next().unwrap();
1233 } else {
1234 break;
1235 }
1236 }
1237
1238 // Copy the text from the selected row region and splice it at the start of the region.
1239 let start = Point::new(rows.start, 0);
1240 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
1241 let text = buffer
1242 .text_for_range(start..end)
1243 .chain(Some("\n"))
1244 .collect::<String>();
1245 edits.push((start, text, rows.len() as u32));
1246 }
1247
1248 let mut edits_iter = edits.iter().peekable();
1249 let mut row_delta = 0;
1250 for selection in selections.iter_mut() {
1251 while let Some((point, _, line_count)) = edits_iter.peek() {
1252 if *point <= selection.start {
1253 row_delta += line_count;
1254 edits_iter.next();
1255 } else {
1256 break;
1257 }
1258 }
1259 selection.start.row += row_delta;
1260 selection.end.row += row_delta;
1261 }
1262
1263 self.buffer.update(cx, |buffer, cx| {
1264 for (point, text, _) in edits.into_iter().rev() {
1265 buffer.edit(Some(point..point), text, cx);
1266 }
1267 });
1268
1269 self.update_selections(selections, true, cx);
1270 self.end_transaction(cx);
1271 }
1272
1273 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
1274 self.start_transaction(cx);
1275
1276 let selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1277 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1278 let buffer = self.buffer.read(cx);
1279
1280 let mut edits = Vec::new();
1281 let mut new_selection_ranges = Vec::new();
1282 let mut old_folds = Vec::new();
1283 let mut new_folds = Vec::new();
1284
1285 let mut selections = selections.iter().peekable();
1286 let mut contiguous_selections = Vec::new();
1287 while let Some(selection) = selections.next() {
1288 // Accumulate contiguous regions of rows that we want to move.
1289 contiguous_selections.push(selection.point_range(buffer));
1290 let SpannedRows {
1291 mut buffer_rows,
1292 mut display_rows,
1293 } = selection.spanned_rows(false, &display_map);
1294
1295 while let Some(next_selection) = selections.peek() {
1296 let SpannedRows {
1297 buffer_rows: next_buffer_rows,
1298 display_rows: next_display_rows,
1299 } = next_selection.spanned_rows(false, &display_map);
1300 if next_buffer_rows.start <= buffer_rows.end {
1301 buffer_rows.end = next_buffer_rows.end;
1302 display_rows.end = next_display_rows.end;
1303 contiguous_selections.push(next_selection.point_range(buffer));
1304 selections.next().unwrap();
1305 } else {
1306 break;
1307 }
1308 }
1309
1310 // Cut the text from the selected rows and paste it at the start of the previous line.
1311 if display_rows.start != 0 {
1312 let start = Point::new(buffer_rows.start, 0).to_offset(buffer);
1313 let end = Point::new(buffer_rows.end - 1, buffer.line_len(buffer_rows.end - 1))
1314 .to_offset(buffer);
1315
1316 let prev_row_display_start = DisplayPoint::new(display_rows.start - 1, 0);
1317 let prev_row_buffer_start = display_map.prev_row_boundary(prev_row_display_start).1;
1318 let prev_row_buffer_start_offset = prev_row_buffer_start.to_offset(buffer);
1319
1320 let mut text = String::new();
1321 text.extend(buffer.text_for_range(start..end));
1322 text.push('\n');
1323 edits.push((
1324 prev_row_buffer_start_offset..prev_row_buffer_start_offset,
1325 text,
1326 ));
1327 edits.push((start - 1..end, String::new()));
1328
1329 let row_delta = buffer_rows.start - prev_row_buffer_start.row;
1330
1331 // Move selections up.
1332 for range in &mut contiguous_selections {
1333 range.start.row -= row_delta;
1334 range.end.row -= row_delta;
1335 }
1336
1337 // Move folds up.
1338 old_folds.push(start..end);
1339 for fold in display_map.folds_in_range(start..end) {
1340 let mut start = fold.start.to_point(buffer);
1341 let mut end = fold.end.to_point(buffer);
1342 start.row -= row_delta;
1343 end.row -= row_delta;
1344 new_folds.push(start..end);
1345 }
1346 }
1347
1348 new_selection_ranges.extend(contiguous_selections.drain(..));
1349 }
1350
1351 self.unfold_ranges(old_folds, cx);
1352 self.buffer.update(cx, |buffer, cx| {
1353 for (range, text) in edits.into_iter().rev() {
1354 buffer.edit(Some(range), text, cx);
1355 }
1356 });
1357 self.fold_ranges(new_folds, cx);
1358 self.select_ranges(new_selection_ranges, true, cx);
1359
1360 self.end_transaction(cx);
1361 }
1362
1363 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
1364 self.start_transaction(cx);
1365
1366 let selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1367 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1368 let buffer = self.buffer.read(cx);
1369
1370 let mut edits = Vec::new();
1371 let mut new_selection_ranges = Vec::new();
1372 let mut old_folds = Vec::new();
1373 let mut new_folds = Vec::new();
1374
1375 let mut selections = selections.iter().peekable();
1376 let mut contiguous_selections = Vec::new();
1377 while let Some(selection) = selections.next() {
1378 // Accumulate contiguous regions of rows that we want to move.
1379 contiguous_selections.push(selection.point_range(buffer));
1380 let SpannedRows {
1381 mut buffer_rows,
1382 mut display_rows,
1383 } = selection.spanned_rows(false, &display_map);
1384 while let Some(next_selection) = selections.peek() {
1385 let SpannedRows {
1386 buffer_rows: next_buffer_rows,
1387 display_rows: next_display_rows,
1388 } = next_selection.spanned_rows(false, &display_map);
1389 if next_buffer_rows.start <= buffer_rows.end {
1390 buffer_rows.end = next_buffer_rows.end;
1391 display_rows.end = next_display_rows.end;
1392 contiguous_selections.push(next_selection.point_range(buffer));
1393 selections.next().unwrap();
1394 } else {
1395 break;
1396 }
1397 }
1398
1399 // Cut the text from the selected rows and paste it at the end of the next line.
1400 if display_rows.end <= display_map.max_point().row() {
1401 let start = Point::new(buffer_rows.start, 0).to_offset(buffer);
1402 let end = Point::new(buffer_rows.end - 1, buffer.line_len(buffer_rows.end - 1))
1403 .to_offset(buffer);
1404
1405 let next_row_display_end =
1406 DisplayPoint::new(display_rows.end, display_map.line_len(display_rows.end));
1407 let next_row_buffer_end = display_map.next_row_boundary(next_row_display_end).1;
1408 let next_row_buffer_end_offset = next_row_buffer_end.to_offset(buffer);
1409
1410 let mut text = String::new();
1411 text.push('\n');
1412 text.extend(buffer.text_for_range(start..end));
1413 edits.push((start..end + 1, String::new()));
1414 edits.push((next_row_buffer_end_offset..next_row_buffer_end_offset, text));
1415
1416 let row_delta = next_row_buffer_end.row - buffer_rows.end + 1;
1417
1418 // Move selections down.
1419 for range in &mut contiguous_selections {
1420 range.start.row += row_delta;
1421 range.end.row += row_delta;
1422 }
1423
1424 // Move folds down.
1425 old_folds.push(start..end);
1426 for fold in display_map.folds_in_range(start..end) {
1427 let mut start = fold.start.to_point(buffer);
1428 let mut end = fold.end.to_point(buffer);
1429 start.row += row_delta;
1430 end.row += row_delta;
1431 new_folds.push(start..end);
1432 }
1433 }
1434
1435 new_selection_ranges.extend(contiguous_selections.drain(..));
1436 }
1437
1438 self.unfold_ranges(old_folds, cx);
1439 self.buffer.update(cx, |buffer, cx| {
1440 for (range, text) in edits.into_iter().rev() {
1441 buffer.edit(Some(range), text, cx);
1442 }
1443 });
1444 self.fold_ranges(new_folds, cx);
1445 self.select_ranges(new_selection_ranges, true, cx);
1446
1447 self.end_transaction(cx);
1448 }
1449
1450 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
1451 self.start_transaction(cx);
1452 let mut text = String::new();
1453 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1454 let mut clipboard_selections = Vec::with_capacity(selections.len());
1455 {
1456 let buffer = self.buffer.read(cx);
1457 let max_point = buffer.max_point();
1458 for selection in &mut selections {
1459 let is_entire_line = selection.is_empty();
1460 if is_entire_line {
1461 selection.start = Point::new(selection.start.row, 0);
1462 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
1463 }
1464 let mut len = 0;
1465 for chunk in buffer.text_for_range(selection.start..selection.end) {
1466 text.push_str(chunk);
1467 len += chunk.len();
1468 }
1469 clipboard_selections.push(ClipboardSelection {
1470 len,
1471 is_entire_line,
1472 });
1473 }
1474 }
1475 self.update_selections(selections, true, cx);
1476 self.insert("", cx);
1477 self.end_transaction(cx);
1478
1479 cx.as_mut()
1480 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
1481 }
1482
1483 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
1484 let selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1485 let buffer = self.buffer.read(cx);
1486 let max_point = buffer.max_point();
1487 let mut text = String::new();
1488 let mut clipboard_selections = Vec::with_capacity(selections.len());
1489 for selection in selections.iter() {
1490 let mut start = selection.start;
1491 let mut end = selection.end;
1492 let is_entire_line = selection.is_empty();
1493 if is_entire_line {
1494 start = Point::new(start.row, 0);
1495 end = cmp::min(max_point, Point::new(start.row + 1, 0));
1496 }
1497 let mut len = 0;
1498 for chunk in buffer.text_for_range(start..end) {
1499 text.push_str(chunk);
1500 len += chunk.len();
1501 }
1502 clipboard_selections.push(ClipboardSelection {
1503 len,
1504 is_entire_line,
1505 });
1506 }
1507
1508 cx.as_mut()
1509 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
1510 }
1511
1512 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
1513 if let Some(item) = cx.as_mut().read_from_clipboard() {
1514 let clipboard_text = item.text();
1515 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
1516 let mut selections = self.selections::<usize>(cx).collect::<Vec<_>>();
1517 let all_selections_were_entire_line =
1518 clipboard_selections.iter().all(|s| s.is_entire_line);
1519 if clipboard_selections.len() != selections.len() {
1520 clipboard_selections.clear();
1521 }
1522
1523 let mut delta = 0_isize;
1524 let mut start_offset = 0;
1525 for (i, selection) in selections.iter_mut().enumerate() {
1526 let to_insert;
1527 let entire_line;
1528 if let Some(clipboard_selection) = clipboard_selections.get(i) {
1529 let end_offset = start_offset + clipboard_selection.len;
1530 to_insert = &clipboard_text[start_offset..end_offset];
1531 entire_line = clipboard_selection.is_entire_line;
1532 start_offset = end_offset
1533 } else {
1534 to_insert = clipboard_text.as_str();
1535 entire_line = all_selections_were_entire_line;
1536 }
1537
1538 selection.start = (selection.start as isize + delta) as usize;
1539 selection.end = (selection.end as isize + delta) as usize;
1540
1541 self.buffer.update(cx, |buffer, cx| {
1542 // If the corresponding selection was empty when this slice of the
1543 // clipboard text was written, then the entire line containing the
1544 // selection was copied. If this selection is also currently empty,
1545 // then paste the line before the current line of the buffer.
1546 let range = if selection.is_empty() && entire_line {
1547 let column = selection.start.to_point(&*buffer).column as usize;
1548 let line_start = selection.start - column;
1549 line_start..line_start
1550 } else {
1551 selection.start..selection.end
1552 };
1553
1554 delta += to_insert.len() as isize - range.len() as isize;
1555 buffer.edit([range], to_insert, cx);
1556 selection.start += to_insert.len();
1557 selection.end = selection.start;
1558 });
1559 }
1560 self.update_selections(selections, true, cx);
1561 } else {
1562 self.insert(clipboard_text, cx);
1563 }
1564 }
1565 }
1566
1567 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
1568 self.buffer.update(cx, |buffer, cx| buffer.undo(cx));
1569 self.request_autoscroll(cx);
1570 }
1571
1572 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
1573 self.buffer.update(cx, |buffer, cx| buffer.redo(cx));
1574 self.request_autoscroll(cx);
1575 }
1576
1577 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
1578 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1579 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1580 for selection in &mut selections {
1581 let start = selection.start.to_display_point(&display_map);
1582 let end = selection.end.to_display_point(&display_map);
1583
1584 if start != end {
1585 selection.end = selection.start.clone();
1586 } else {
1587 let cursor = movement::left(&display_map, start)
1588 .unwrap()
1589 .to_point(&display_map);
1590 selection.start = cursor.clone();
1591 selection.end = cursor;
1592 }
1593 selection.reversed = false;
1594 selection.goal = SelectionGoal::None;
1595 }
1596 self.update_selections(selections, true, cx);
1597 }
1598
1599 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
1600 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1601 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1602 for selection in &mut selections {
1603 let head = selection.head().to_display_point(&display_map);
1604 let cursor = movement::left(&display_map, head)
1605 .unwrap()
1606 .to_point(&display_map);
1607 selection.set_head(cursor);
1608 selection.goal = SelectionGoal::None;
1609 }
1610 self.update_selections(selections, true, cx);
1611 }
1612
1613 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
1614 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1615 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1616 for selection in &mut selections {
1617 let start = selection.start.to_display_point(&display_map);
1618 let end = selection.end.to_display_point(&display_map);
1619
1620 if start != end {
1621 selection.start = selection.end.clone();
1622 } else {
1623 let cursor = movement::right(&display_map, end)
1624 .unwrap()
1625 .to_point(&display_map);
1626 selection.start = cursor;
1627 selection.end = cursor;
1628 }
1629 selection.reversed = false;
1630 selection.goal = SelectionGoal::None;
1631 }
1632 self.update_selections(selections, true, cx);
1633 }
1634
1635 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
1636 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1637 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1638 for selection in &mut selections {
1639 let head = selection.head().to_display_point(&display_map);
1640 let cursor = movement::right(&display_map, head)
1641 .unwrap()
1642 .to_point(&display_map);
1643 selection.set_head(cursor);
1644 selection.goal = SelectionGoal::None;
1645 }
1646 self.update_selections(selections, true, cx);
1647 }
1648
1649 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
1650 if matches!(self.mode, EditorMode::SingleLine) {
1651 cx.propagate_action();
1652 return;
1653 }
1654
1655 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1656 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1657 for selection in &mut selections {
1658 let start = selection.start.to_display_point(&display_map);
1659 let end = selection.end.to_display_point(&display_map);
1660 if start != end {
1661 selection.goal = SelectionGoal::None;
1662 }
1663
1664 let (start, goal) = movement::up(&display_map, start, selection.goal).unwrap();
1665 let cursor = start.to_point(&display_map);
1666 selection.start = cursor;
1667 selection.end = cursor;
1668 selection.goal = goal;
1669 selection.reversed = false;
1670 }
1671 self.update_selections(selections, true, cx);
1672 }
1673
1674 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
1675 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1676 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1677 for selection in &mut selections {
1678 let head = selection.head().to_display_point(&display_map);
1679 let (head, goal) = movement::up(&display_map, head, selection.goal).unwrap();
1680 let cursor = head.to_point(&display_map);
1681 selection.set_head(cursor);
1682 selection.goal = goal;
1683 }
1684 self.update_selections(selections, true, cx);
1685 }
1686
1687 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
1688 if matches!(self.mode, EditorMode::SingleLine) {
1689 cx.propagate_action();
1690 return;
1691 }
1692
1693 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1694 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1695 for selection in &mut selections {
1696 let start = selection.start.to_display_point(&display_map);
1697 let end = selection.end.to_display_point(&display_map);
1698 if start != end {
1699 selection.goal = SelectionGoal::None;
1700 }
1701
1702 let (start, goal) = movement::down(&display_map, end, selection.goal).unwrap();
1703 let cursor = start.to_point(&display_map);
1704 selection.start = cursor;
1705 selection.end = cursor;
1706 selection.goal = goal;
1707 selection.reversed = false;
1708 }
1709 self.update_selections(selections, true, cx);
1710 }
1711
1712 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
1713 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1714 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1715 for selection in &mut selections {
1716 let head = selection.head().to_display_point(&display_map);
1717 let (head, goal) = movement::down(&display_map, head, selection.goal).unwrap();
1718 let cursor = head.to_point(&display_map);
1719 selection.set_head(cursor);
1720 selection.goal = goal;
1721 }
1722 self.update_selections(selections, true, cx);
1723 }
1724
1725 pub fn move_to_previous_word_boundary(
1726 &mut self,
1727 _: &MoveToPreviousWordBoundary,
1728 cx: &mut ViewContext<Self>,
1729 ) {
1730 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1731 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1732 for selection in &mut selections {
1733 let head = selection.head().to_display_point(&display_map);
1734 let new_head = movement::prev_word_boundary(&display_map, head).unwrap();
1735 let cursor = new_head.to_point(&display_map);
1736 selection.start = cursor.clone();
1737 selection.end = cursor;
1738 selection.reversed = false;
1739 selection.goal = SelectionGoal::None;
1740 }
1741 self.update_selections(selections, true, cx);
1742 }
1743
1744 pub fn select_to_previous_word_boundary(
1745 &mut self,
1746 _: &SelectToPreviousWordBoundary,
1747 cx: &mut ViewContext<Self>,
1748 ) {
1749 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1750 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1751 for selection in &mut selections {
1752 let head = selection.head().to_display_point(&display_map);
1753 let new_head = movement::prev_word_boundary(&display_map, head).unwrap();
1754 let cursor = new_head.to_point(&display_map);
1755 selection.set_head(cursor);
1756 selection.goal = SelectionGoal::None;
1757 }
1758 self.update_selections(selections, true, cx);
1759 }
1760
1761 pub fn delete_to_previous_word_boundary(
1762 &mut self,
1763 _: &DeleteToPreviousWordBoundary,
1764 cx: &mut ViewContext<Self>,
1765 ) {
1766 self.start_transaction(cx);
1767 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1768 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1769 for selection in &mut selections {
1770 if selection.is_empty() {
1771 let head = selection.head().to_display_point(&display_map);
1772 let new_head = movement::prev_word_boundary(&display_map, head).unwrap();
1773 let cursor = new_head.to_point(&display_map);
1774 selection.set_head(cursor);
1775 selection.goal = SelectionGoal::None;
1776 }
1777 }
1778 self.update_selections(selections, true, cx);
1779 self.insert("", cx);
1780 self.end_transaction(cx);
1781 }
1782
1783 pub fn move_to_next_word_boundary(
1784 &mut self,
1785 _: &MoveToNextWordBoundary,
1786 cx: &mut ViewContext<Self>,
1787 ) {
1788 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1789 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1790 for selection in &mut selections {
1791 let head = selection.head().to_display_point(&display_map);
1792 let new_head = movement::next_word_boundary(&display_map, head).unwrap();
1793 let cursor = new_head.to_point(&display_map);
1794 selection.start = cursor;
1795 selection.end = cursor;
1796 selection.reversed = false;
1797 selection.goal = SelectionGoal::None;
1798 }
1799 self.update_selections(selections, true, cx);
1800 }
1801
1802 pub fn select_to_next_word_boundary(
1803 &mut self,
1804 _: &SelectToNextWordBoundary,
1805 cx: &mut ViewContext<Self>,
1806 ) {
1807 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1808 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1809 for selection in &mut selections {
1810 let head = selection.head().to_display_point(&display_map);
1811 let new_head = movement::next_word_boundary(&display_map, head).unwrap();
1812 let cursor = new_head.to_point(&display_map);
1813 selection.set_head(cursor);
1814 selection.goal = SelectionGoal::None;
1815 }
1816 self.update_selections(selections, true, cx);
1817 }
1818
1819 pub fn delete_to_next_word_boundary(
1820 &mut self,
1821 _: &DeleteToNextWordBoundary,
1822 cx: &mut ViewContext<Self>,
1823 ) {
1824 self.start_transaction(cx);
1825 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1826 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1827 for selection in &mut selections {
1828 if selection.is_empty() {
1829 let head = selection.head().to_display_point(&display_map);
1830 let new_head = movement::next_word_boundary(&display_map, head).unwrap();
1831 let cursor = new_head.to_point(&display_map);
1832 selection.set_head(cursor);
1833 selection.goal = SelectionGoal::None;
1834 }
1835 }
1836 self.update_selections(selections, true, cx);
1837 self.insert("", cx);
1838 self.end_transaction(cx);
1839 }
1840
1841 pub fn move_to_beginning_of_line(
1842 &mut self,
1843 _: &MoveToBeginningOfLine,
1844 cx: &mut ViewContext<Self>,
1845 ) {
1846 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1847 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1848 for selection in &mut selections {
1849 let head = selection.head().to_display_point(&display_map);
1850 let new_head = movement::line_beginning(&display_map, head, true).unwrap();
1851 let cursor = new_head.to_point(&display_map);
1852 selection.start = cursor;
1853 selection.end = cursor;
1854 selection.reversed = false;
1855 selection.goal = SelectionGoal::None;
1856 }
1857 self.update_selections(selections, true, cx);
1858 }
1859
1860 pub fn select_to_beginning_of_line(
1861 &mut self,
1862 SelectToBeginningOfLine(toggle_indent): &SelectToBeginningOfLine,
1863 cx: &mut ViewContext<Self>,
1864 ) {
1865 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1866 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1867 for selection in &mut selections {
1868 let head = selection.head().to_display_point(&display_map);
1869 let new_head = movement::line_beginning(&display_map, head, *toggle_indent).unwrap();
1870 selection.set_head(new_head.to_point(&display_map));
1871 selection.goal = SelectionGoal::None;
1872 }
1873 self.update_selections(selections, true, cx);
1874 }
1875
1876 pub fn delete_to_beginning_of_line(
1877 &mut self,
1878 _: &DeleteToBeginningOfLine,
1879 cx: &mut ViewContext<Self>,
1880 ) {
1881 self.start_transaction(cx);
1882 self.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
1883 self.backspace(&Backspace, cx);
1884 self.end_transaction(cx);
1885 }
1886
1887 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
1888 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1889 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1890 {
1891 for selection in &mut selections {
1892 let head = selection.head().to_display_point(&display_map);
1893 let new_head = movement::line_end(&display_map, head).unwrap();
1894 let anchor = new_head.to_point(&display_map);
1895 selection.start = anchor.clone();
1896 selection.end = anchor;
1897 selection.reversed = false;
1898 selection.goal = SelectionGoal::None;
1899 }
1900 }
1901 self.update_selections(selections, true, cx);
1902 }
1903
1904 pub fn select_to_end_of_line(&mut self, _: &SelectToEndOfLine, cx: &mut ViewContext<Self>) {
1905 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1906 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1907 for selection in &mut selections {
1908 let head = selection.head().to_display_point(&display_map);
1909 let new_head = movement::line_end(&display_map, head).unwrap();
1910 selection.set_head(new_head.to_point(&display_map));
1911 selection.goal = SelectionGoal::None;
1912 }
1913 self.update_selections(selections, true, cx);
1914 }
1915
1916 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
1917 self.start_transaction(cx);
1918 self.select_to_end_of_line(&SelectToEndOfLine, cx);
1919 self.delete(&Delete, cx);
1920 self.end_transaction(cx);
1921 }
1922
1923 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
1924 self.start_transaction(cx);
1925 self.select_to_end_of_line(&SelectToEndOfLine, cx);
1926 self.cut(&Cut, cx);
1927 self.end_transaction(cx);
1928 }
1929
1930 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
1931 let selection = Selection {
1932 id: post_inc(&mut self.next_selection_id),
1933 start: 0,
1934 end: 0,
1935 reversed: false,
1936 goal: SelectionGoal::None,
1937 };
1938 self.update_selections(vec![selection], true, cx);
1939 }
1940
1941 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
1942 let mut selection = self.selections::<Point>(cx).last().unwrap().clone();
1943 selection.set_head(Point::zero());
1944 self.update_selections(vec![selection], true, cx);
1945 }
1946
1947 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
1948 let buffer = self.buffer.read(cx);
1949 let cursor = buffer.len();
1950 let selection = Selection {
1951 id: post_inc(&mut self.next_selection_id),
1952 start: cursor,
1953 end: cursor,
1954 reversed: false,
1955 goal: SelectionGoal::None,
1956 };
1957 self.update_selections(vec![selection], true, cx);
1958 }
1959
1960 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
1961 let mut selection = self.selections::<usize>(cx).last().unwrap().clone();
1962 selection.set_head(self.buffer.read(cx).len());
1963 self.update_selections(vec![selection], true, cx);
1964 }
1965
1966 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
1967 let selection = Selection {
1968 id: post_inc(&mut self.next_selection_id),
1969 start: 0,
1970 end: self.buffer.read(cx).len(),
1971 reversed: false,
1972 goal: SelectionGoal::None,
1973 };
1974 self.update_selections(vec![selection], false, cx);
1975 }
1976
1977 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
1978 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1979 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1980 let buffer = self.buffer.read(cx);
1981 let max_point = buffer.max_point();
1982 for selection in &mut selections {
1983 let rows = selection.spanned_rows(true, &display_map).buffer_rows;
1984 selection.start = Point::new(rows.start, 0);
1985 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
1986 selection.reversed = false;
1987 }
1988 self.update_selections(selections, true, cx);
1989 }
1990
1991 pub fn split_selection_into_lines(
1992 &mut self,
1993 _: &SplitSelectionIntoLines,
1994 cx: &mut ViewContext<Self>,
1995 ) {
1996 let selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1997 let buffer = self.buffer.read(cx);
1998
1999 let mut to_unfold = Vec::new();
2000 let mut new_selections = Vec::new();
2001 for selection in selections.iter() {
2002 if selection.start.row != selection.end.row {
2003 new_selections.push(Selection {
2004 id: post_inc(&mut self.next_selection_id),
2005 start: selection.start,
2006 end: selection.start,
2007 reversed: false,
2008 goal: SelectionGoal::None,
2009 });
2010 }
2011 for row in selection.start.row + 1..selection.end.row {
2012 let cursor = Point::new(row, buffer.line_len(row));
2013 new_selections.push(Selection {
2014 id: post_inc(&mut self.next_selection_id),
2015 start: cursor,
2016 end: cursor,
2017 reversed: false,
2018 goal: SelectionGoal::None,
2019 });
2020 }
2021 new_selections.push(Selection {
2022 id: selection.id,
2023 start: selection.end,
2024 end: selection.end,
2025 reversed: false,
2026 goal: SelectionGoal::None,
2027 });
2028 to_unfold.push(selection.start..selection.end);
2029 }
2030 self.unfold_ranges(to_unfold, cx);
2031 self.update_selections(new_selections, true, cx);
2032 }
2033
2034 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
2035 self.add_selection(true, cx);
2036 }
2037
2038 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
2039 self.add_selection(false, cx);
2040 }
2041
2042 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
2043 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2044 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
2045 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
2046 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
2047 let range = oldest_selection.display_range(&display_map).sorted();
2048 let columns = cmp::min(range.start.column(), range.end.column())
2049 ..cmp::max(range.start.column(), range.end.column());
2050
2051 selections.clear();
2052 let mut stack = Vec::new();
2053 for row in range.start.row()..=range.end.row() {
2054 if let Some(selection) = self.build_columnar_selection(
2055 &display_map,
2056 row,
2057 &columns,
2058 oldest_selection.reversed,
2059 ) {
2060 stack.push(selection.id);
2061 selections.push(selection);
2062 }
2063 }
2064
2065 if above {
2066 stack.reverse();
2067 }
2068
2069 AddSelectionsState { above, stack }
2070 });
2071
2072 let last_added_selection = *state.stack.last().unwrap();
2073 let mut new_selections = Vec::new();
2074 if above == state.above {
2075 let end_row = if above {
2076 0
2077 } else {
2078 display_map.max_point().row()
2079 };
2080
2081 'outer: for selection in selections {
2082 if selection.id == last_added_selection {
2083 let range = selection.display_range(&display_map).sorted();
2084 debug_assert_eq!(range.start.row(), range.end.row());
2085 let mut row = range.start.row();
2086 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
2087 {
2088 start..end
2089 } else {
2090 cmp::min(range.start.column(), range.end.column())
2091 ..cmp::max(range.start.column(), range.end.column())
2092 };
2093
2094 while row != end_row {
2095 if above {
2096 row -= 1;
2097 } else {
2098 row += 1;
2099 }
2100
2101 if let Some(new_selection) = self.build_columnar_selection(
2102 &display_map,
2103 row,
2104 &columns,
2105 selection.reversed,
2106 ) {
2107 state.stack.push(new_selection.id);
2108 if above {
2109 new_selections.push(new_selection);
2110 new_selections.push(selection);
2111 } else {
2112 new_selections.push(selection);
2113 new_selections.push(new_selection);
2114 }
2115
2116 continue 'outer;
2117 }
2118 }
2119 }
2120
2121 new_selections.push(selection);
2122 }
2123 } else {
2124 new_selections = selections;
2125 new_selections.retain(|s| s.id != last_added_selection);
2126 state.stack.pop();
2127 }
2128
2129 self.update_selections(new_selections, true, cx);
2130 if state.stack.len() > 1 {
2131 self.add_selections_state = Some(state);
2132 }
2133 }
2134
2135 pub fn select_larger_syntax_node(
2136 &mut self,
2137 _: &SelectLargerSyntaxNode,
2138 cx: &mut ViewContext<Self>,
2139 ) {
2140 let old_selections = self.selections::<usize>(cx).collect::<Box<_>>();
2141 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2142 let buffer = self.buffer.read(cx);
2143
2144 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
2145 let mut selected_larger_node = false;
2146 let mut new_selections = old_selections
2147 .iter()
2148 .map(|selection| {
2149 let old_range = selection.start..selection.end;
2150 let mut new_range = old_range.clone();
2151 while let Some(containing_range) =
2152 buffer.range_for_syntax_ancestor(new_range.clone())
2153 {
2154 new_range = containing_range;
2155 if !display_map.intersects_fold(new_range.start)
2156 && !display_map.intersects_fold(new_range.end)
2157 {
2158 break;
2159 }
2160 }
2161
2162 selected_larger_node |= new_range != old_range;
2163 Selection {
2164 id: selection.id,
2165 start: new_range.start,
2166 end: new_range.end,
2167 goal: SelectionGoal::None,
2168 reversed: selection.reversed,
2169 }
2170 })
2171 .collect::<Vec<_>>();
2172
2173 if selected_larger_node {
2174 stack.push(old_selections);
2175 new_selections.sort_unstable_by_key(|selection| selection.start);
2176 self.update_selections(new_selections, true, cx);
2177 }
2178 self.select_larger_syntax_node_stack = stack;
2179 }
2180
2181 pub fn select_smaller_syntax_node(
2182 &mut self,
2183 _: &SelectSmallerSyntaxNode,
2184 cx: &mut ViewContext<Self>,
2185 ) {
2186 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
2187 if let Some(selections) = stack.pop() {
2188 self.update_selections(selections.to_vec(), true, cx);
2189 }
2190 self.select_larger_syntax_node_stack = stack;
2191 }
2192
2193 pub fn move_to_enclosing_bracket(
2194 &mut self,
2195 _: &MoveToEnclosingBracket,
2196 cx: &mut ViewContext<Self>,
2197 ) {
2198 let mut selections = self.selections::<usize>(cx).collect::<Vec<_>>();
2199 let buffer = self.buffer.read(cx.as_ref());
2200 for selection in &mut selections {
2201 if let Some((open_range, close_range)) =
2202 buffer.enclosing_bracket_ranges(selection.start..selection.end)
2203 {
2204 let close_range = close_range.to_inclusive();
2205 let destination = if close_range.contains(&selection.start)
2206 && close_range.contains(&selection.end)
2207 {
2208 open_range.end
2209 } else {
2210 *close_range.start()
2211 };
2212 selection.start = destination;
2213 selection.end = destination;
2214 }
2215 }
2216
2217 self.update_selections(selections, true, cx);
2218 }
2219
2220 pub fn show_next_diagnostic(&mut self, _: &ShowNextDiagnostic, cx: &mut ViewContext<Self>) {
2221 let selection = self.newest_selection::<usize>(cx);
2222 let buffer = self.buffer.read(cx.as_ref());
2223 let active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
2224 active_diagnostics
2225 .primary_range
2226 .to_offset(buffer)
2227 .to_inclusive()
2228 });
2229 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
2230 if active_primary_range.contains(&selection.head()) {
2231 *active_primary_range.end()
2232 } else {
2233 selection.head()
2234 }
2235 } else {
2236 selection.head()
2237 };
2238
2239 loop {
2240 let next_group = buffer
2241 .diagnostics_in_range::<_, usize>(search_start..buffer.len())
2242 .find_map(|(range, diagnostic)| {
2243 if diagnostic.is_primary
2244 && !range.is_empty()
2245 && Some(range.end) != active_primary_range.as_ref().map(|r| *r.end())
2246 {
2247 Some((range, diagnostic.group_id))
2248 } else {
2249 None
2250 }
2251 });
2252
2253 if let Some((primary_range, group_id)) = next_group {
2254 self.activate_diagnostics(group_id, cx);
2255 self.update_selections(
2256 vec![Selection {
2257 id: selection.id,
2258 start: primary_range.start,
2259 end: primary_range.start,
2260 reversed: false,
2261 goal: SelectionGoal::None,
2262 }],
2263 true,
2264 cx,
2265 );
2266 break;
2267 } else if search_start == 0 {
2268 break;
2269 } else {
2270 // Cycle around to the start of the buffer.
2271 search_start = 0;
2272 }
2273 }
2274 }
2275
2276 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
2277 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
2278 let buffer = self.buffer.read(cx);
2279 let primary_range_start = active_diagnostics.primary_range.start.to_offset(buffer);
2280 let is_valid = buffer
2281 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone())
2282 .any(|(range, diagnostic)| {
2283 diagnostic.is_primary
2284 && !range.is_empty()
2285 && range.start == primary_range_start
2286 && diagnostic.message == active_diagnostics.primary_message
2287 });
2288
2289 if is_valid != active_diagnostics.is_valid {
2290 active_diagnostics.is_valid = is_valid;
2291 let mut new_styles = HashMap::new();
2292 for (block_id, diagnostic) in &active_diagnostics.blocks {
2293 let severity = diagnostic.severity;
2294 let message_len = diagnostic.message.len();
2295 new_styles.insert(
2296 *block_id,
2297 (
2298 Some({
2299 let build_settings = self.build_settings.clone();
2300 move |cx: &AppContext| {
2301 let settings = build_settings.borrow()(cx);
2302 vec![(
2303 message_len,
2304 diagnostic_style(severity, is_valid, &settings.style)
2305 .text
2306 .into(),
2307 )]
2308 }
2309 }),
2310 Some({
2311 let build_settings = self.build_settings.clone();
2312 move |cx: &AppContext| {
2313 let settings = build_settings.borrow()(cx);
2314 diagnostic_style(severity, is_valid, &settings.style).block
2315 }
2316 }),
2317 ),
2318 );
2319 }
2320 self.display_map
2321 .update(cx, |display_map, _| display_map.restyle_blocks(new_styles));
2322 }
2323 }
2324 }
2325
2326 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) {
2327 self.dismiss_diagnostics(cx);
2328 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
2329 let buffer = self.buffer.read(cx);
2330
2331 let mut primary_range = None;
2332 let mut primary_message = None;
2333 let mut group_end = Point::zero();
2334 let diagnostic_group = buffer
2335 .diagnostic_group::<Point>(group_id)
2336 .map(|(range, diagnostic)| {
2337 if range.end > group_end {
2338 group_end = range.end;
2339 }
2340 if diagnostic.is_primary {
2341 primary_range = Some(range.clone());
2342 primary_message = Some(diagnostic.message.clone());
2343 }
2344 (range, diagnostic.clone())
2345 })
2346 .collect::<Vec<_>>();
2347 let primary_range = primary_range.unwrap();
2348 let primary_message = primary_message.unwrap();
2349 let primary_range =
2350 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
2351
2352 let blocks = display_map
2353 .insert_blocks(
2354 diagnostic_group.iter().map(|(range, diagnostic)| {
2355 let build_settings = self.build_settings.clone();
2356 let message_len = diagnostic.message.len();
2357 let severity = diagnostic.severity;
2358 BlockProperties {
2359 position: range.start,
2360 text: diagnostic.message.as_str(),
2361 build_runs: Some(Arc::new({
2362 let build_settings = build_settings.clone();
2363 move |cx| {
2364 let settings = build_settings.borrow()(cx);
2365 vec![(
2366 message_len,
2367 diagnostic_style(severity, true, &settings.style)
2368 .text
2369 .into(),
2370 )]
2371 }
2372 })),
2373 build_style: Some(Arc::new({
2374 let build_settings = build_settings.clone();
2375 move |cx| {
2376 let settings = build_settings.borrow()(cx);
2377 diagnostic_style(severity, true, &settings.style).block
2378 }
2379 })),
2380 disposition: BlockDisposition::Below,
2381 }
2382 }),
2383 cx,
2384 )
2385 .into_iter()
2386 .zip(
2387 diagnostic_group
2388 .into_iter()
2389 .map(|(_, diagnostic)| diagnostic),
2390 )
2391 .collect();
2392
2393 Some(ActiveDiagnosticGroup {
2394 primary_range,
2395 primary_message,
2396 blocks,
2397 is_valid: true,
2398 })
2399 });
2400 }
2401
2402 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
2403 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
2404 self.display_map.update(cx, |display_map, cx| {
2405 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
2406 });
2407 cx.notify();
2408 }
2409 }
2410
2411 fn build_columnar_selection(
2412 &mut self,
2413 display_map: &DisplayMapSnapshot,
2414 row: u32,
2415 columns: &Range<u32>,
2416 reversed: bool,
2417 ) -> Option<Selection<Point>> {
2418 let is_empty = columns.start == columns.end;
2419 let line_len = display_map.line_len(row);
2420 if columns.start < line_len || (is_empty && columns.start == line_len) {
2421 let start = DisplayPoint::new(row, columns.start);
2422 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
2423 Some(Selection {
2424 id: post_inc(&mut self.next_selection_id),
2425 start: start.to_point(display_map),
2426 end: end.to_point(display_map),
2427 reversed,
2428 goal: SelectionGoal::ColumnRange {
2429 start: columns.start,
2430 end: columns.end,
2431 },
2432 })
2433 } else {
2434 None
2435 }
2436 }
2437
2438 pub fn active_selection_sets<'a>(
2439 &'a self,
2440 cx: &'a AppContext,
2441 ) -> impl 'a + Iterator<Item = SelectionSetId> {
2442 let buffer = self.buffer.read(cx);
2443 let replica_id = buffer.replica_id();
2444 buffer
2445 .selection_sets()
2446 .filter(move |(set_id, set)| {
2447 set.active && (set_id.replica_id != replica_id || **set_id == self.selection_set_id)
2448 })
2449 .map(|(set_id, _)| *set_id)
2450 }
2451
2452 pub fn selections_in_range<'a>(
2453 &'a self,
2454 set_id: SelectionSetId,
2455 range: Range<DisplayPoint>,
2456 cx: &'a mut MutableAppContext,
2457 ) -> impl 'a + Iterator<Item = Range<DisplayPoint>> {
2458 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2459 let buffer = self.buffer.read(cx);
2460 let selections = self
2461 .selection_set(cx)
2462 .selections::<Point, _>(buffer)
2463 .collect::<Vec<_>>();
2464 let start = range.start.to_point(&display_map);
2465 let start_index = self.selection_insertion_index(&selections, start);
2466 let pending_selection = if set_id.replica_id == self.buffer.read(cx).replica_id() {
2467 self.pending_selection.as_ref().and_then(|pending| {
2468 let mut selection_start = pending.start.to_display_point(&display_map);
2469 let mut selection_end = pending.end.to_display_point(&display_map);
2470 if pending.reversed {
2471 mem::swap(&mut selection_start, &mut selection_end);
2472 }
2473 if selection_start <= range.end || selection_end <= range.end {
2474 Some(selection_start..selection_end)
2475 } else {
2476 None
2477 }
2478 })
2479 } else {
2480 None
2481 };
2482 selections
2483 .into_iter()
2484 .skip(start_index)
2485 .map(move |s| s.display_range(&display_map))
2486 .take_while(move |r| r.start <= range.end || r.end <= range.end)
2487 .chain(pending_selection)
2488 }
2489
2490 fn selection_insertion_index(&self, selections: &[Selection<Point>], start: Point) -> usize {
2491 match selections.binary_search_by_key(&start, |probe| probe.start) {
2492 Ok(index) => index,
2493 Err(index) => {
2494 if index > 0 && selections[index - 1].end > start {
2495 index - 1
2496 } else {
2497 index
2498 }
2499 }
2500 }
2501 }
2502
2503 pub fn selections<'a, D>(&self, cx: &'a AppContext) -> impl 'a + Iterator<Item = Selection<D>>
2504 where
2505 D: 'a + TextDimension<'a> + Ord,
2506 {
2507 let buffer = self.buffer.read(cx);
2508 let mut selections = self.selection_set(cx).selections::<D, _>(buffer).peekable();
2509 let mut pending_selection = self.pending_selection(cx);
2510 iter::from_fn(move || {
2511 if let Some(pending) = pending_selection.as_mut() {
2512 while let Some(next_selection) = selections.peek() {
2513 if pending.start <= next_selection.end && pending.end >= next_selection.start {
2514 let next_selection = selections.next().unwrap();
2515 if next_selection.start < pending.start {
2516 pending.start = next_selection.start;
2517 }
2518 if next_selection.end > pending.end {
2519 pending.end = next_selection.end;
2520 }
2521 } else if next_selection.end < pending.start {
2522 return selections.next();
2523 } else {
2524 break;
2525 }
2526 }
2527
2528 pending_selection.take()
2529 } else {
2530 selections.next()
2531 }
2532 })
2533 }
2534
2535 fn pending_selection<'a, D>(&self, cx: &'a AppContext) -> Option<Selection<D>>
2536 where
2537 D: 'a + TextDimension<'a>,
2538 {
2539 let buffer = self.buffer.read(cx);
2540 self.pending_selection.as_ref().map(|selection| Selection {
2541 id: selection.id,
2542 start: selection.start.summary::<D, _>(buffer),
2543 end: selection.end.summary::<D, _>(buffer),
2544 reversed: selection.reversed,
2545 goal: selection.goal,
2546 })
2547 }
2548
2549 fn selection_count<'a>(&self, cx: &'a AppContext) -> usize {
2550 let mut selection_count = self.selection_set(cx).len();
2551 if self.pending_selection.is_some() {
2552 selection_count += 1;
2553 }
2554 selection_count
2555 }
2556
2557 pub fn oldest_selection<'a, T>(&self, cx: &'a AppContext) -> Selection<T>
2558 where
2559 T: 'a + TextDimension<'a>,
2560 {
2561 let buffer = self.buffer.read(cx);
2562 self.selection_set(cx)
2563 .oldest_selection(buffer)
2564 .or_else(|| self.pending_selection(cx))
2565 .unwrap()
2566 }
2567
2568 pub fn newest_selection<'a, T>(&self, cx: &'a AppContext) -> Selection<T>
2569 where
2570 T: 'a + TextDimension<'a>,
2571 {
2572 let buffer = self.buffer.read(cx);
2573 self.pending_selection(cx)
2574 .or_else(|| self.selection_set(cx).newest_selection(buffer))
2575 .unwrap()
2576 }
2577
2578 fn selection_set<'a>(&self, cx: &'a AppContext) -> &'a SelectionSet {
2579 self.buffer
2580 .read(cx)
2581 .selection_set(self.selection_set_id)
2582 .unwrap()
2583 }
2584
2585 fn update_selections<T>(
2586 &mut self,
2587 mut selections: Vec<Selection<T>>,
2588 autoscroll: bool,
2589 cx: &mut ViewContext<Self>,
2590 ) where
2591 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
2592 {
2593 // Merge overlapping selections.
2594 let buffer = self.buffer.read(cx);
2595 let mut i = 1;
2596 while i < selections.len() {
2597 if selections[i - 1].end >= selections[i].start {
2598 let removed = selections.remove(i);
2599 if removed.start < selections[i - 1].start {
2600 selections[i - 1].start = removed.start;
2601 }
2602 if removed.end > selections[i - 1].end {
2603 selections[i - 1].end = removed.end;
2604 }
2605 } else {
2606 i += 1;
2607 }
2608 }
2609
2610 self.pending_selection = None;
2611 self.add_selections_state = None;
2612 self.select_larger_syntax_node_stack.clear();
2613 while let Some(autoclose_pair_state) = self.autoclose_stack.last() {
2614 let all_selections_inside_autoclose_ranges =
2615 if selections.len() == autoclose_pair_state.ranges.len() {
2616 selections
2617 .iter()
2618 .zip(autoclose_pair_state.ranges.ranges::<Point, _>(buffer))
2619 .all(|(selection, autoclose_range)| {
2620 let head = selection.head().to_point(&*buffer);
2621 autoclose_range.start <= head && autoclose_range.end >= head
2622 })
2623 } else {
2624 false
2625 };
2626
2627 if all_selections_inside_autoclose_ranges {
2628 break;
2629 } else {
2630 self.autoclose_stack.pop();
2631 }
2632 }
2633
2634 if autoscroll {
2635 self.request_autoscroll(cx);
2636 }
2637 self.pause_cursor_blinking(cx);
2638
2639 self.buffer.update(cx, |buffer, cx| {
2640 buffer
2641 .update_selection_set(self.selection_set_id, &selections, cx)
2642 .unwrap();
2643 });
2644 }
2645
2646 fn request_autoscroll(&mut self, cx: &mut ViewContext<Self>) {
2647 self.autoscroll_requested = true;
2648 cx.notify();
2649 }
2650
2651 fn start_transaction(&mut self, cx: &mut ViewContext<Self>) {
2652 self.end_selection(cx);
2653 self.buffer.update(cx, |buffer, _| {
2654 buffer
2655 .start_transaction(Some(self.selection_set_id))
2656 .unwrap()
2657 });
2658 }
2659
2660 fn end_transaction(&self, cx: &mut ViewContext<Self>) {
2661 self.buffer.update(cx, |buffer, cx| {
2662 buffer
2663 .end_transaction(Some(self.selection_set_id), cx)
2664 .unwrap()
2665 });
2666 }
2667
2668 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
2669 log::info!("Editor::page_up");
2670 }
2671
2672 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
2673 log::info!("Editor::page_down");
2674 }
2675
2676 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
2677 let mut fold_ranges = Vec::new();
2678
2679 let selections = self.selections::<Point>(cx).collect::<Vec<_>>();
2680 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2681 for selection in selections {
2682 let range = selection.display_range(&display_map).sorted();
2683 let buffer_start_row = range.start.to_point(&display_map).row;
2684
2685 for row in (0..=range.end.row()).rev() {
2686 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
2687 let fold_range = self.foldable_range_for_line(&display_map, row);
2688 if fold_range.end.row >= buffer_start_row {
2689 fold_ranges.push(fold_range);
2690 if row <= range.start.row() {
2691 break;
2692 }
2693 }
2694 }
2695 }
2696 }
2697
2698 self.fold_ranges(fold_ranges, cx);
2699 }
2700
2701 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
2702 let selections = self.selections::<Point>(cx).collect::<Vec<_>>();
2703 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2704 let buffer = self.buffer.read(cx);
2705 let ranges = selections
2706 .iter()
2707 .map(|s| {
2708 let range = s.display_range(&display_map).sorted();
2709 let mut start = range.start.to_point(&display_map);
2710 let mut end = range.end.to_point(&display_map);
2711 start.column = 0;
2712 end.column = buffer.line_len(end.row);
2713 start..end
2714 })
2715 .collect::<Vec<_>>();
2716 self.unfold_ranges(ranges, cx);
2717 }
2718
2719 fn is_line_foldable(&self, display_map: &DisplayMapSnapshot, display_row: u32) -> bool {
2720 let max_point = display_map.max_point();
2721 if display_row >= max_point.row() {
2722 false
2723 } else {
2724 let (start_indent, is_blank) = display_map.line_indent(display_row);
2725 if is_blank {
2726 false
2727 } else {
2728 for display_row in display_row + 1..=max_point.row() {
2729 let (indent, is_blank) = display_map.line_indent(display_row);
2730 if !is_blank {
2731 return indent > start_indent;
2732 }
2733 }
2734 false
2735 }
2736 }
2737 }
2738
2739 fn foldable_range_for_line(
2740 &self,
2741 display_map: &DisplayMapSnapshot,
2742 start_row: u32,
2743 ) -> Range<Point> {
2744 let max_point = display_map.max_point();
2745
2746 let (start_indent, _) = display_map.line_indent(start_row);
2747 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
2748 let mut end = None;
2749 for row in start_row + 1..=max_point.row() {
2750 let (indent, is_blank) = display_map.line_indent(row);
2751 if !is_blank && indent <= start_indent {
2752 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
2753 break;
2754 }
2755 }
2756
2757 let end = end.unwrap_or(max_point);
2758 return start.to_point(display_map)..end.to_point(display_map);
2759 }
2760
2761 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
2762 let selections = self.selections::<Point>(cx);
2763 let ranges = selections.map(|s| s.start..s.end).collect();
2764 self.fold_ranges(ranges, cx);
2765 }
2766
2767 fn fold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
2768 if !ranges.is_empty() {
2769 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
2770 self.autoscroll_requested = true;
2771 cx.notify();
2772 }
2773 }
2774
2775 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
2776 if !ranges.is_empty() {
2777 self.display_map
2778 .update(cx, |map, cx| map.unfold(ranges, cx));
2779 self.autoscroll_requested = true;
2780 cx.notify();
2781 }
2782 }
2783
2784 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
2785 self.display_map
2786 .update(cx, |map, cx| map.snapshot(cx))
2787 .longest_row()
2788 }
2789
2790 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
2791 self.display_map
2792 .update(cx, |map, cx| map.snapshot(cx))
2793 .max_point()
2794 }
2795
2796 pub fn text(&self, cx: &AppContext) -> String {
2797 self.buffer.read(cx).text()
2798 }
2799
2800 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
2801 self.display_map
2802 .update(cx, |map, cx| map.snapshot(cx))
2803 .text()
2804 }
2805
2806 // pub fn font_size(&self) -> f32 {
2807 // self.settings.font_size
2808 // }
2809
2810 pub fn set_wrap_width(&self, width: f32, cx: &mut MutableAppContext) -> bool {
2811 self.display_map
2812 .update(cx, |map, cx| map.set_wrap_width(Some(width), cx))
2813 }
2814
2815 fn next_blink_epoch(&mut self) -> usize {
2816 self.blink_epoch += 1;
2817 self.blink_epoch
2818 }
2819
2820 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
2821 self.show_local_cursors = true;
2822 cx.notify();
2823
2824 let epoch = self.next_blink_epoch();
2825 cx.spawn(|this, mut cx| {
2826 let this = this.downgrade();
2827 async move {
2828 Timer::after(CURSOR_BLINK_INTERVAL).await;
2829 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
2830 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
2831 }
2832 }
2833 })
2834 .detach();
2835 }
2836
2837 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
2838 if epoch == self.blink_epoch {
2839 self.blinking_paused = false;
2840 self.blink_cursors(epoch, cx);
2841 }
2842 }
2843
2844 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
2845 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
2846 self.show_local_cursors = !self.show_local_cursors;
2847 cx.notify();
2848
2849 let epoch = self.next_blink_epoch();
2850 cx.spawn(|this, mut cx| {
2851 let this = this.downgrade();
2852 async move {
2853 Timer::after(CURSOR_BLINK_INTERVAL).await;
2854 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
2855 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
2856 }
2857 }
2858 })
2859 .detach();
2860 }
2861 }
2862
2863 pub fn show_local_cursors(&self) -> bool {
2864 self.show_local_cursors
2865 }
2866
2867 fn on_buffer_changed(&mut self, _: ModelHandle<Buffer>, cx: &mut ViewContext<Self>) {
2868 self.refresh_active_diagnostics(cx);
2869 cx.notify();
2870 }
2871
2872 fn on_buffer_event(
2873 &mut self,
2874 _: ModelHandle<Buffer>,
2875 event: &language::Event,
2876 cx: &mut ViewContext<Self>,
2877 ) {
2878 match event {
2879 language::Event::Edited => cx.emit(Event::Edited),
2880 language::Event::Dirtied => cx.emit(Event::Dirtied),
2881 language::Event::Saved => cx.emit(Event::Saved),
2882 language::Event::FileHandleChanged => cx.emit(Event::FileHandleChanged),
2883 language::Event::Reloaded => cx.emit(Event::FileHandleChanged),
2884 language::Event::Closed => cx.emit(Event::Closed),
2885 language::Event::Reparsed => {}
2886 }
2887 }
2888
2889 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
2890 cx.notify();
2891 }
2892}
2893
2894impl Snapshot {
2895 pub fn is_empty(&self) -> bool {
2896 self.display_snapshot.is_empty()
2897 }
2898
2899 pub fn is_focused(&self) -> bool {
2900 self.is_focused
2901 }
2902
2903 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
2904 self.placeholder_text.as_ref()
2905 }
2906
2907 pub fn buffer_row_count(&self) -> u32 {
2908 self.display_snapshot.buffer_row_count()
2909 }
2910
2911 pub fn buffer_rows<'a>(&'a self, start_row: u32, cx: &'a AppContext) -> BufferRows<'a> {
2912 self.display_snapshot.buffer_rows(start_row, Some(cx))
2913 }
2914
2915 pub fn chunks<'a>(
2916 &'a self,
2917 display_rows: Range<u32>,
2918 theme: Option<&'a SyntaxTheme>,
2919 cx: &'a AppContext,
2920 ) -> display_map::Chunks<'a> {
2921 self.display_snapshot.chunks(display_rows, theme, cx)
2922 }
2923
2924 pub fn scroll_position(&self) -> Vector2F {
2925 compute_scroll_position(
2926 &self.display_snapshot,
2927 self.scroll_position,
2928 &self.scroll_top_anchor,
2929 )
2930 }
2931
2932 pub fn max_point(&self) -> DisplayPoint {
2933 self.display_snapshot.max_point()
2934 }
2935
2936 pub fn longest_row(&self) -> u32 {
2937 self.display_snapshot.longest_row()
2938 }
2939
2940 pub fn line_len(&self, display_row: u32) -> u32 {
2941 self.display_snapshot.line_len(display_row)
2942 }
2943
2944 pub fn line(&self, display_row: u32) -> String {
2945 self.display_snapshot.line(display_row)
2946 }
2947
2948 pub fn prev_row_boundary(&self, point: DisplayPoint) -> (DisplayPoint, Point) {
2949 self.display_snapshot.prev_row_boundary(point)
2950 }
2951
2952 pub fn next_row_boundary(&self, point: DisplayPoint) -> (DisplayPoint, Point) {
2953 self.display_snapshot.next_row_boundary(point)
2954 }
2955}
2956
2957impl EditorSettings {
2958 #[cfg(any(test, feature = "test-support"))]
2959 pub fn test(cx: &AppContext) -> Self {
2960 Self {
2961 tab_size: 4,
2962 style: {
2963 let font_cache: &gpui::FontCache = cx.font_cache();
2964 let font_family_name = Arc::from("Monaco");
2965 let font_properties = Default::default();
2966 let font_family_id = font_cache.load_family(&[&font_family_name]).unwrap();
2967 let font_id = font_cache
2968 .select_font(font_family_id, &font_properties)
2969 .unwrap();
2970 EditorStyle {
2971 text: gpui::fonts::TextStyle {
2972 font_family_name,
2973 font_family_id,
2974 font_id,
2975 font_size: 14.,
2976 color: gpui::color::Color::from_u32(0xff0000ff),
2977 font_properties,
2978 underline: None,
2979 },
2980 placeholder_text: None,
2981 background: Default::default(),
2982 gutter_background: Default::default(),
2983 active_line_background: Default::default(),
2984 line_number: Default::default(),
2985 line_number_active: Default::default(),
2986 selection: Default::default(),
2987 guest_selections: Default::default(),
2988 syntax: Default::default(),
2989 error_diagnostic: Default::default(),
2990 invalid_error_diagnostic: Default::default(),
2991 warning_diagnostic: Default::default(),
2992 invalid_warning_diagnostic: Default::default(),
2993 information_diagnostic: Default::default(),
2994 invalid_information_diagnostic: Default::default(),
2995 hint_diagnostic: Default::default(),
2996 invalid_hint_diagnostic: Default::default(),
2997 }
2998 },
2999 }
3000 }
3001}
3002
3003fn compute_scroll_position(
3004 snapshot: &DisplayMapSnapshot,
3005 mut scroll_position: Vector2F,
3006 scroll_top_anchor: &Anchor,
3007) -> Vector2F {
3008 let scroll_top = scroll_top_anchor.to_display_point(snapshot).row() as f32;
3009 scroll_position.set_y(scroll_top + scroll_position.y());
3010 scroll_position
3011}
3012
3013pub enum Event {
3014 Activate,
3015 Edited,
3016 Blurred,
3017 Dirtied,
3018 Saved,
3019 FileHandleChanged,
3020 Closed,
3021}
3022
3023impl Entity for Editor {
3024 type Event = Event;
3025
3026 fn release(&mut self, cx: &mut MutableAppContext) {
3027 self.buffer.update(cx, |buffer, cx| {
3028 buffer
3029 .remove_selection_set(self.selection_set_id, cx)
3030 .unwrap();
3031 });
3032 }
3033}
3034
3035impl View for Editor {
3036 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
3037 let settings = self.build_settings.borrow_mut()(cx);
3038 self.display_map.update(cx, |map, cx| {
3039 map.set_font(
3040 settings.style.text.font_id,
3041 settings.style.text.font_size,
3042 cx,
3043 )
3044 });
3045 EditorElement::new(self.handle.clone(), settings).boxed()
3046 }
3047
3048 fn ui_name() -> &'static str {
3049 "Editor"
3050 }
3051
3052 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
3053 self.focused = true;
3054 self.blink_cursors(self.blink_epoch, cx);
3055 self.buffer.update(cx, |buffer, cx| {
3056 buffer
3057 .set_active_selection_set(Some(self.selection_set_id), cx)
3058 .unwrap();
3059 });
3060 }
3061
3062 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
3063 self.focused = false;
3064 self.show_local_cursors = false;
3065 self.buffer.update(cx, |buffer, cx| {
3066 buffer.set_active_selection_set(None, cx).unwrap();
3067 });
3068 cx.emit(Event::Blurred);
3069 cx.notify();
3070 }
3071
3072 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
3073 let mut cx = Self::default_keymap_context();
3074 let mode = match self.mode {
3075 EditorMode::SingleLine => "single_line",
3076 EditorMode::AutoHeight { .. } => "auto_height",
3077 EditorMode::Full => "full",
3078 };
3079 cx.map.insert("mode".into(), mode.into());
3080 cx
3081 }
3082}
3083
3084impl SelectionExt for Selection<Point> {
3085 fn display_range(&self, map: &DisplayMapSnapshot) -> Range<DisplayPoint> {
3086 let start = self.start.to_display_point(map);
3087 let end = self.end.to_display_point(map);
3088 if self.reversed {
3089 end..start
3090 } else {
3091 start..end
3092 }
3093 }
3094
3095 fn spanned_rows(
3096 &self,
3097 include_end_if_at_line_start: bool,
3098 map: &DisplayMapSnapshot,
3099 ) -> SpannedRows {
3100 let display_start = self.start.to_display_point(map);
3101 let mut display_end = self.end.to_display_point(map);
3102 if !include_end_if_at_line_start
3103 && display_end.row() != map.max_point().row()
3104 && display_start.row() != display_end.row()
3105 && display_end.column() == 0
3106 {
3107 *display_end.row_mut() -= 1;
3108 }
3109
3110 let (display_start, buffer_start) = map.prev_row_boundary(display_start);
3111 let (display_end, buffer_end) = map.next_row_boundary(display_end);
3112
3113 SpannedRows {
3114 buffer_rows: buffer_start.row..buffer_end.row + 1,
3115 display_rows: display_start.row()..display_end.row() + 1,
3116 }
3117 }
3118}
3119
3120pub fn diagnostic_style(
3121 severity: DiagnosticSeverity,
3122 valid: bool,
3123 style: &EditorStyle,
3124) -> DiagnosticStyle {
3125 match (severity, valid) {
3126 (DiagnosticSeverity::ERROR, true) => style.error_diagnostic,
3127 (DiagnosticSeverity::ERROR, false) => style.invalid_error_diagnostic,
3128 (DiagnosticSeverity::WARNING, true) => style.warning_diagnostic,
3129 (DiagnosticSeverity::WARNING, false) => style.invalid_warning_diagnostic,
3130 (DiagnosticSeverity::INFORMATION, true) => style.information_diagnostic,
3131 (DiagnosticSeverity::INFORMATION, false) => style.invalid_information_diagnostic,
3132 (DiagnosticSeverity::HINT, true) => style.hint_diagnostic,
3133 (DiagnosticSeverity::HINT, false) => style.invalid_hint_diagnostic,
3134 _ => Default::default(),
3135 }
3136}
3137
3138#[cfg(test)]
3139mod tests {
3140 use super::*;
3141 use crate::test::sample_text;
3142 use buffer::Point;
3143 use unindent::Unindent;
3144
3145 #[gpui::test]
3146 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
3147 let buffer = cx.add_model(|cx| Buffer::new(0, "aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx));
3148 let settings = EditorSettings::test(cx);
3149 let (_, editor) =
3150 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3151
3152 editor.update(cx, |view, cx| {
3153 view.begin_selection(DisplayPoint::new(2, 2), false, cx);
3154 });
3155
3156 assert_eq!(
3157 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3158 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
3159 );
3160
3161 editor.update(cx, |view, cx| {
3162 view.update_selection(DisplayPoint::new(3, 3), Vector2F::zero(), cx);
3163 });
3164
3165 assert_eq!(
3166 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3167 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
3168 );
3169
3170 editor.update(cx, |view, cx| {
3171 view.update_selection(DisplayPoint::new(1, 1), Vector2F::zero(), cx);
3172 });
3173
3174 assert_eq!(
3175 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3176 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
3177 );
3178
3179 editor.update(cx, |view, cx| {
3180 view.end_selection(cx);
3181 view.update_selection(DisplayPoint::new(3, 3), Vector2F::zero(), cx);
3182 });
3183
3184 assert_eq!(
3185 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3186 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
3187 );
3188
3189 editor.update(cx, |view, cx| {
3190 view.begin_selection(DisplayPoint::new(3, 3), true, cx);
3191 view.update_selection(DisplayPoint::new(0, 0), Vector2F::zero(), cx);
3192 });
3193
3194 assert_eq!(
3195 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3196 [
3197 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
3198 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
3199 ]
3200 );
3201
3202 editor.update(cx, |view, cx| {
3203 view.end_selection(cx);
3204 });
3205
3206 assert_eq!(
3207 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3208 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
3209 );
3210 }
3211
3212 #[gpui::test]
3213 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
3214 let buffer = cx.add_model(|cx| Buffer::new(0, "aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx));
3215 let settings = EditorSettings::test(cx);
3216 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3217
3218 view.update(cx, |view, cx| {
3219 view.begin_selection(DisplayPoint::new(2, 2), false, cx);
3220 assert_eq!(
3221 view.selection_ranges(cx),
3222 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
3223 );
3224 });
3225
3226 view.update(cx, |view, cx| {
3227 view.update_selection(DisplayPoint::new(3, 3), Vector2F::zero(), cx);
3228 assert_eq!(
3229 view.selection_ranges(cx),
3230 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
3231 );
3232 });
3233
3234 view.update(cx, |view, cx| {
3235 view.cancel(&Cancel, cx);
3236 view.update_selection(DisplayPoint::new(1, 1), Vector2F::zero(), cx);
3237 assert_eq!(
3238 view.selection_ranges(cx),
3239 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
3240 );
3241 });
3242 }
3243
3244 #[gpui::test]
3245 fn test_cancel(cx: &mut gpui::MutableAppContext) {
3246 let buffer = cx.add_model(|cx| Buffer::new(0, "aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx));
3247 let settings = EditorSettings::test(cx);
3248 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3249
3250 view.update(cx, |view, cx| {
3251 view.begin_selection(DisplayPoint::new(3, 4), false, cx);
3252 view.update_selection(DisplayPoint::new(1, 1), Vector2F::zero(), cx);
3253 view.end_selection(cx);
3254
3255 view.begin_selection(DisplayPoint::new(0, 1), true, cx);
3256 view.update_selection(DisplayPoint::new(0, 3), Vector2F::zero(), cx);
3257 view.end_selection(cx);
3258 assert_eq!(
3259 view.selection_ranges(cx),
3260 [
3261 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
3262 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
3263 ]
3264 );
3265 });
3266
3267 view.update(cx, |view, cx| {
3268 view.cancel(&Cancel, cx);
3269 assert_eq!(
3270 view.selection_ranges(cx),
3271 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
3272 );
3273 });
3274
3275 view.update(cx, |view, cx| {
3276 view.cancel(&Cancel, cx);
3277 assert_eq!(
3278 view.selection_ranges(cx),
3279 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
3280 );
3281 });
3282 }
3283
3284 #[gpui::test]
3285 fn test_fold(cx: &mut gpui::MutableAppContext) {
3286 let buffer = cx.add_model(|cx| {
3287 Buffer::new(
3288 0,
3289 "
3290 impl Foo {
3291 // Hello!
3292
3293 fn a() {
3294 1
3295 }
3296
3297 fn b() {
3298 2
3299 }
3300
3301 fn c() {
3302 3
3303 }
3304 }
3305 "
3306 .unindent(),
3307 cx,
3308 )
3309 });
3310 let settings = EditorSettings::test(&cx);
3311 let (_, view) = cx.add_window(Default::default(), |cx| {
3312 build_editor(buffer.clone(), settings, cx)
3313 });
3314
3315 view.update(cx, |view, cx| {
3316 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx)
3317 .unwrap();
3318 view.fold(&Fold, cx);
3319 assert_eq!(
3320 view.display_text(cx),
3321 "
3322 impl Foo {
3323 // Hello!
3324
3325 fn a() {
3326 1
3327 }
3328
3329 fn b() {…
3330 }
3331
3332 fn c() {…
3333 }
3334 }
3335 "
3336 .unindent(),
3337 );
3338
3339 view.fold(&Fold, cx);
3340 assert_eq!(
3341 view.display_text(cx),
3342 "
3343 impl Foo {…
3344 }
3345 "
3346 .unindent(),
3347 );
3348
3349 view.unfold(&Unfold, cx);
3350 assert_eq!(
3351 view.display_text(cx),
3352 "
3353 impl Foo {
3354 // Hello!
3355
3356 fn a() {
3357 1
3358 }
3359
3360 fn b() {…
3361 }
3362
3363 fn c() {…
3364 }
3365 }
3366 "
3367 .unindent(),
3368 );
3369
3370 view.unfold(&Unfold, cx);
3371 assert_eq!(view.display_text(cx), buffer.read(cx).text());
3372 });
3373 }
3374
3375 #[gpui::test]
3376 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
3377 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(6, 6), cx));
3378 let settings = EditorSettings::test(&cx);
3379 let (_, view) = cx.add_window(Default::default(), |cx| {
3380 build_editor(buffer.clone(), settings, cx)
3381 });
3382
3383 buffer.update(cx, |buffer, cx| {
3384 buffer.edit(
3385 vec![
3386 Point::new(1, 0)..Point::new(1, 0),
3387 Point::new(1, 1)..Point::new(1, 1),
3388 ],
3389 "\t",
3390 cx,
3391 );
3392 });
3393
3394 view.update(cx, |view, cx| {
3395 assert_eq!(
3396 view.selection_ranges(cx),
3397 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
3398 );
3399
3400 view.move_down(&MoveDown, cx);
3401 assert_eq!(
3402 view.selection_ranges(cx),
3403 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
3404 );
3405
3406 view.move_right(&MoveRight, cx);
3407 assert_eq!(
3408 view.selection_ranges(cx),
3409 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
3410 );
3411
3412 view.move_left(&MoveLeft, cx);
3413 assert_eq!(
3414 view.selection_ranges(cx),
3415 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
3416 );
3417
3418 view.move_up(&MoveUp, cx);
3419 assert_eq!(
3420 view.selection_ranges(cx),
3421 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
3422 );
3423
3424 view.move_to_end(&MoveToEnd, cx);
3425 assert_eq!(
3426 view.selection_ranges(cx),
3427 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
3428 );
3429
3430 view.move_to_beginning(&MoveToBeginning, cx);
3431 assert_eq!(
3432 view.selection_ranges(cx),
3433 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
3434 );
3435
3436 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx)
3437 .unwrap();
3438 view.select_to_beginning(&SelectToBeginning, cx);
3439 assert_eq!(
3440 view.selection_ranges(cx),
3441 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
3442 );
3443
3444 view.select_to_end(&SelectToEnd, cx);
3445 assert_eq!(
3446 view.selection_ranges(cx),
3447 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
3448 );
3449 });
3450 }
3451
3452 #[gpui::test]
3453 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
3454 let buffer = cx.add_model(|cx| Buffer::new(0, "ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx));
3455 let settings = EditorSettings::test(&cx);
3456 let (_, view) = cx.add_window(Default::default(), |cx| {
3457 build_editor(buffer.clone(), settings, cx)
3458 });
3459
3460 assert_eq!('ⓐ'.len_utf8(), 3);
3461 assert_eq!('α'.len_utf8(), 2);
3462
3463 view.update(cx, |view, cx| {
3464 view.fold_ranges(
3465 vec![
3466 Point::new(0, 6)..Point::new(0, 12),
3467 Point::new(1, 2)..Point::new(1, 4),
3468 Point::new(2, 4)..Point::new(2, 8),
3469 ],
3470 cx,
3471 );
3472 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
3473
3474 view.move_right(&MoveRight, cx);
3475 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐ".len())]);
3476 view.move_right(&MoveRight, cx);
3477 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ".len())]);
3478 view.move_right(&MoveRight, cx);
3479 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ…".len())]);
3480
3481 view.move_down(&MoveDown, cx);
3482 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "ab…".len())]);
3483 view.move_left(&MoveLeft, cx);
3484 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "ab".len())]);
3485 view.move_left(&MoveLeft, cx);
3486 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "a".len())]);
3487
3488 view.move_down(&MoveDown, cx);
3489 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "α".len())]);
3490 view.move_right(&MoveRight, cx);
3491 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβ".len())]);
3492 view.move_right(&MoveRight, cx);
3493 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβ…".len())]);
3494 view.move_right(&MoveRight, cx);
3495 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβ…ε".len())]);
3496
3497 view.move_up(&MoveUp, cx);
3498 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "ab…e".len())]);
3499 view.move_up(&MoveUp, cx);
3500 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ…ⓔ".len())]);
3501 view.move_left(&MoveLeft, cx);
3502 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ…".len())]);
3503 view.move_left(&MoveLeft, cx);
3504 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ".len())]);
3505 view.move_left(&MoveLeft, cx);
3506 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐ".len())]);
3507 });
3508 }
3509
3510 #[gpui::test]
3511 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
3512 let buffer = cx.add_model(|cx| Buffer::new(0, "ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx));
3513 let settings = EditorSettings::test(&cx);
3514 let (_, view) = cx.add_window(Default::default(), |cx| {
3515 build_editor(buffer.clone(), settings, cx)
3516 });
3517 view.update(cx, |view, cx| {
3518 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx)
3519 .unwrap();
3520
3521 view.move_down(&MoveDown, cx);
3522 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "abcd".len())]);
3523
3524 view.move_down(&MoveDown, cx);
3525 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβγ".len())]);
3526
3527 view.move_down(&MoveDown, cx);
3528 assert_eq!(view.selection_ranges(cx), &[empty_range(3, "abcd".len())]);
3529
3530 view.move_down(&MoveDown, cx);
3531 assert_eq!(view.selection_ranges(cx), &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]);
3532
3533 view.move_up(&MoveUp, cx);
3534 assert_eq!(view.selection_ranges(cx), &[empty_range(3, "abcd".len())]);
3535
3536 view.move_up(&MoveUp, cx);
3537 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβγ".len())]);
3538 });
3539 }
3540
3541 #[gpui::test]
3542 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
3543 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\n def", cx));
3544 let settings = EditorSettings::test(&cx);
3545 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3546 view.update(cx, |view, cx| {
3547 view.select_display_ranges(
3548 &[
3549 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
3550 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
3551 ],
3552 cx,
3553 )
3554 .unwrap();
3555 });
3556
3557 view.update(cx, |view, cx| {
3558 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
3559 assert_eq!(
3560 view.selection_ranges(cx),
3561 &[
3562 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
3563 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
3564 ]
3565 );
3566 });
3567
3568 view.update(cx, |view, cx| {
3569 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
3570 assert_eq!(
3571 view.selection_ranges(cx),
3572 &[
3573 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
3574 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
3575 ]
3576 );
3577 });
3578
3579 view.update(cx, |view, cx| {
3580 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
3581 assert_eq!(
3582 view.selection_ranges(cx),
3583 &[
3584 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
3585 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
3586 ]
3587 );
3588 });
3589
3590 view.update(cx, |view, cx| {
3591 view.move_to_end_of_line(&MoveToEndOfLine, cx);
3592 assert_eq!(
3593 view.selection_ranges(cx),
3594 &[
3595 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
3596 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
3597 ]
3598 );
3599 });
3600
3601 // Moving to the end of line again is a no-op.
3602 view.update(cx, |view, cx| {
3603 view.move_to_end_of_line(&MoveToEndOfLine, cx);
3604 assert_eq!(
3605 view.selection_ranges(cx),
3606 &[
3607 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
3608 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
3609 ]
3610 );
3611 });
3612
3613 view.update(cx, |view, cx| {
3614 view.move_left(&MoveLeft, cx);
3615 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
3616 assert_eq!(
3617 view.selection_ranges(cx),
3618 &[
3619 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
3620 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
3621 ]
3622 );
3623 });
3624
3625 view.update(cx, |view, cx| {
3626 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
3627 assert_eq!(
3628 view.selection_ranges(cx),
3629 &[
3630 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
3631 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
3632 ]
3633 );
3634 });
3635
3636 view.update(cx, |view, cx| {
3637 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
3638 assert_eq!(
3639 view.selection_ranges(cx),
3640 &[
3641 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
3642 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
3643 ]
3644 );
3645 });
3646
3647 view.update(cx, |view, cx| {
3648 view.select_to_end_of_line(&SelectToEndOfLine, cx);
3649 assert_eq!(
3650 view.selection_ranges(cx),
3651 &[
3652 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
3653 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
3654 ]
3655 );
3656 });
3657
3658 view.update(cx, |view, cx| {
3659 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
3660 assert_eq!(view.display_text(cx), "ab\n de");
3661 assert_eq!(
3662 view.selection_ranges(cx),
3663 &[
3664 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
3665 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
3666 ]
3667 );
3668 });
3669
3670 view.update(cx, |view, cx| {
3671 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
3672 assert_eq!(view.display_text(cx), "\n");
3673 assert_eq!(
3674 view.selection_ranges(cx),
3675 &[
3676 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
3677 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
3678 ]
3679 );
3680 });
3681 }
3682
3683 #[gpui::test]
3684 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
3685 let buffer =
3686 cx.add_model(|cx| Buffer::new(0, "use std::str::{foo, bar}\n\n {baz.qux()}", cx));
3687 let settings = EditorSettings::test(&cx);
3688 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3689 view.update(cx, |view, cx| {
3690 view.select_display_ranges(
3691 &[
3692 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
3693 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
3694 ],
3695 cx,
3696 )
3697 .unwrap();
3698 });
3699
3700 view.update(cx, |view, cx| {
3701 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
3702 assert_eq!(
3703 view.selection_ranges(cx),
3704 &[
3705 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
3706 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
3707 ]
3708 );
3709 });
3710
3711 view.update(cx, |view, cx| {
3712 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
3713 assert_eq!(
3714 view.selection_ranges(cx),
3715 &[
3716 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
3717 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2),
3718 ]
3719 );
3720 });
3721
3722 view.update(cx, |view, cx| {
3723 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
3724 assert_eq!(
3725 view.selection_ranges(cx),
3726 &[
3727 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
3728 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
3729 ]
3730 );
3731 });
3732
3733 view.update(cx, |view, cx| {
3734 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
3735 assert_eq!(
3736 view.selection_ranges(cx),
3737 &[
3738 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
3739 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
3740 ]
3741 );
3742 });
3743
3744 view.update(cx, |view, cx| {
3745 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
3746 assert_eq!(
3747 view.selection_ranges(cx),
3748 &[
3749 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
3750 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 23),
3751 ]
3752 );
3753 });
3754
3755 view.update(cx, |view, cx| {
3756 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
3757 assert_eq!(
3758 view.selection_ranges(cx),
3759 &[
3760 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
3761 DisplayPoint::new(0, 24)..DisplayPoint::new(0, 24),
3762 ]
3763 );
3764 });
3765
3766 view.update(cx, |view, cx| {
3767 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
3768 assert_eq!(
3769 view.selection_ranges(cx),
3770 &[
3771 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
3772 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
3773 ]
3774 );
3775 });
3776
3777 view.update(cx, |view, cx| {
3778 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
3779 assert_eq!(
3780 view.selection_ranges(cx),
3781 &[
3782 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
3783 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
3784 ]
3785 );
3786 });
3787
3788 view.update(cx, |view, cx| {
3789 view.move_right(&MoveRight, cx);
3790 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
3791 assert_eq!(
3792 view.selection_ranges(cx),
3793 &[
3794 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
3795 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
3796 ]
3797 );
3798 });
3799
3800 view.update(cx, |view, cx| {
3801 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
3802 assert_eq!(
3803 view.selection_ranges(cx),
3804 &[
3805 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 7),
3806 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 2),
3807 ]
3808 );
3809 });
3810
3811 view.update(cx, |view, cx| {
3812 view.select_to_next_word_boundary(&SelectToNextWordBoundary, cx);
3813 assert_eq!(
3814 view.selection_ranges(cx),
3815 &[
3816 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
3817 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
3818 ]
3819 );
3820 });
3821 }
3822
3823 #[gpui::test]
3824 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
3825 let buffer =
3826 cx.add_model(|cx| Buffer::new(0, "use one::{\n two::three::four::five\n};", cx));
3827 let settings = EditorSettings::test(&cx);
3828 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3829
3830 view.update(cx, |view, cx| {
3831 view.set_wrap_width(140., cx);
3832 assert_eq!(
3833 view.display_text(cx),
3834 "use one::{\n two::three::\n four::five\n};"
3835 );
3836
3837 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx)
3838 .unwrap();
3839
3840 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
3841 assert_eq!(
3842 view.selection_ranges(cx),
3843 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
3844 );
3845
3846 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
3847 assert_eq!(
3848 view.selection_ranges(cx),
3849 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
3850 );
3851
3852 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
3853 assert_eq!(
3854 view.selection_ranges(cx),
3855 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
3856 );
3857
3858 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
3859 assert_eq!(
3860 view.selection_ranges(cx),
3861 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
3862 );
3863
3864 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
3865 assert_eq!(
3866 view.selection_ranges(cx),
3867 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
3868 );
3869
3870 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
3871 assert_eq!(
3872 view.selection_ranges(cx),
3873 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
3874 );
3875 });
3876 }
3877
3878 #[gpui::test]
3879 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
3880 let buffer = cx.add_model(|cx| Buffer::new(0, "one two three four", cx));
3881 let settings = EditorSettings::test(&cx);
3882 let (_, view) = cx.add_window(Default::default(), |cx| {
3883 build_editor(buffer.clone(), settings, cx)
3884 });
3885
3886 view.update(cx, |view, cx| {
3887 view.select_display_ranges(
3888 &[
3889 // an empty selection - the preceding word fragment is deleted
3890 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
3891 // characters selected - they are deleted
3892 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
3893 ],
3894 cx,
3895 )
3896 .unwrap();
3897 view.delete_to_previous_word_boundary(&DeleteToPreviousWordBoundary, cx);
3898 });
3899
3900 assert_eq!(buffer.read(cx).text(), "e two te four");
3901
3902 view.update(cx, |view, cx| {
3903 view.select_display_ranges(
3904 &[
3905 // an empty selection - the following word fragment is deleted
3906 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
3907 // characters selected - they are deleted
3908 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
3909 ],
3910 cx,
3911 )
3912 .unwrap();
3913 view.delete_to_next_word_boundary(&DeleteToNextWordBoundary, cx);
3914 });
3915
3916 assert_eq!(buffer.read(cx).text(), "e t te our");
3917 }
3918
3919 #[gpui::test]
3920 fn test_newline(cx: &mut gpui::MutableAppContext) {
3921 let buffer = cx.add_model(|cx| Buffer::new(0, "aaaa\n bbbb\n", cx));
3922 let settings = EditorSettings::test(&cx);
3923 let (_, view) = cx.add_window(Default::default(), |cx| {
3924 build_editor(buffer.clone(), settings, cx)
3925 });
3926
3927 view.update(cx, |view, cx| {
3928 view.select_display_ranges(
3929 &[
3930 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
3931 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
3932 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
3933 ],
3934 cx,
3935 )
3936 .unwrap();
3937
3938 view.newline(&Newline, cx);
3939 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
3940 });
3941 }
3942
3943 #[gpui::test]
3944 fn test_backspace(cx: &mut gpui::MutableAppContext) {
3945 let buffer = cx.add_model(|cx| {
3946 Buffer::new(
3947 0,
3948 "one two three\nfour five six\nseven eight nine\nten\n",
3949 cx,
3950 )
3951 });
3952 let settings = EditorSettings::test(&cx);
3953 let (_, view) = cx.add_window(Default::default(), |cx| {
3954 build_editor(buffer.clone(), settings, cx)
3955 });
3956
3957 view.update(cx, |view, cx| {
3958 view.select_display_ranges(
3959 &[
3960 // an empty selection - the preceding character is deleted
3961 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
3962 // one character selected - it is deleted
3963 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
3964 // a line suffix selected - it is deleted
3965 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
3966 ],
3967 cx,
3968 )
3969 .unwrap();
3970 view.backspace(&Backspace, cx);
3971 });
3972
3973 assert_eq!(
3974 buffer.read(cx).text(),
3975 "oe two three\nfou five six\nseven ten\n"
3976 );
3977 }
3978
3979 #[gpui::test]
3980 fn test_delete(cx: &mut gpui::MutableAppContext) {
3981 let buffer = cx.add_model(|cx| {
3982 Buffer::new(
3983 0,
3984 "one two three\nfour five six\nseven eight nine\nten\n",
3985 cx,
3986 )
3987 });
3988 let settings = EditorSettings::test(&cx);
3989 let (_, view) = cx.add_window(Default::default(), |cx| {
3990 build_editor(buffer.clone(), settings, cx)
3991 });
3992
3993 view.update(cx, |view, cx| {
3994 view.select_display_ranges(
3995 &[
3996 // an empty selection - the following character is deleted
3997 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
3998 // one character selected - it is deleted
3999 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
4000 // a line suffix selected - it is deleted
4001 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
4002 ],
4003 cx,
4004 )
4005 .unwrap();
4006 view.delete(&Delete, cx);
4007 });
4008
4009 assert_eq!(
4010 buffer.read(cx).text(),
4011 "on two three\nfou five six\nseven ten\n"
4012 );
4013 }
4014
4015 #[gpui::test]
4016 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
4017 let settings = EditorSettings::test(&cx);
4018 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\ndef\nghi\n", cx));
4019 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4020 view.update(cx, |view, cx| {
4021 view.select_display_ranges(
4022 &[
4023 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4024 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
4025 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
4026 ],
4027 cx,
4028 )
4029 .unwrap();
4030 view.delete_line(&DeleteLine, cx);
4031 assert_eq!(view.display_text(cx), "ghi");
4032 assert_eq!(
4033 view.selection_ranges(cx),
4034 vec![
4035 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4036 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
4037 ]
4038 );
4039 });
4040
4041 let settings = EditorSettings::test(&cx);
4042 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\ndef\nghi\n", cx));
4043 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4044 view.update(cx, |view, cx| {
4045 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx)
4046 .unwrap();
4047 view.delete_line(&DeleteLine, cx);
4048 assert_eq!(view.display_text(cx), "ghi\n");
4049 assert_eq!(
4050 view.selection_ranges(cx),
4051 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
4052 );
4053 });
4054 }
4055
4056 #[gpui::test]
4057 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
4058 let settings = EditorSettings::test(&cx);
4059 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\ndef\nghi\n", cx));
4060 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4061 view.update(cx, |view, cx| {
4062 view.select_display_ranges(
4063 &[
4064 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
4065 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4066 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4067 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
4068 ],
4069 cx,
4070 )
4071 .unwrap();
4072 view.duplicate_line(&DuplicateLine, cx);
4073 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
4074 assert_eq!(
4075 view.selection_ranges(cx),
4076 vec![
4077 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
4078 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
4079 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
4080 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
4081 ]
4082 );
4083 });
4084
4085 let settings = EditorSettings::test(&cx);
4086 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\ndef\nghi\n", cx));
4087 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4088 view.update(cx, |view, cx| {
4089 view.select_display_ranges(
4090 &[
4091 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
4092 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
4093 ],
4094 cx,
4095 )
4096 .unwrap();
4097 view.duplicate_line(&DuplicateLine, cx);
4098 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
4099 assert_eq!(
4100 view.selection_ranges(cx),
4101 vec![
4102 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
4103 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
4104 ]
4105 );
4106 });
4107 }
4108
4109 #[gpui::test]
4110 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
4111 let settings = EditorSettings::test(&cx);
4112 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(10, 5), cx));
4113 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4114 view.update(cx, |view, cx| {
4115 view.fold_ranges(
4116 vec![
4117 Point::new(0, 2)..Point::new(1, 2),
4118 Point::new(2, 3)..Point::new(4, 1),
4119 Point::new(7, 0)..Point::new(8, 4),
4120 ],
4121 cx,
4122 );
4123 view.select_display_ranges(
4124 &[
4125 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4126 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
4127 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
4128 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
4129 ],
4130 cx,
4131 )
4132 .unwrap();
4133 assert_eq!(
4134 view.display_text(cx),
4135 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
4136 );
4137
4138 view.move_line_up(&MoveLineUp, cx);
4139 assert_eq!(
4140 view.display_text(cx),
4141 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
4142 );
4143 assert_eq!(
4144 view.selection_ranges(cx),
4145 vec![
4146 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4147 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4148 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
4149 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
4150 ]
4151 );
4152 });
4153
4154 view.update(cx, |view, cx| {
4155 view.move_line_down(&MoveLineDown, cx);
4156 assert_eq!(
4157 view.display_text(cx),
4158 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
4159 );
4160 assert_eq!(
4161 view.selection_ranges(cx),
4162 vec![
4163 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
4164 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
4165 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
4166 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
4167 ]
4168 );
4169 });
4170
4171 view.update(cx, |view, cx| {
4172 view.move_line_down(&MoveLineDown, cx);
4173 assert_eq!(
4174 view.display_text(cx),
4175 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
4176 );
4177 assert_eq!(
4178 view.selection_ranges(cx),
4179 vec![
4180 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4181 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
4182 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
4183 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
4184 ]
4185 );
4186 });
4187
4188 view.update(cx, |view, cx| {
4189 view.move_line_up(&MoveLineUp, cx);
4190 assert_eq!(
4191 view.display_text(cx),
4192 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
4193 );
4194 assert_eq!(
4195 view.selection_ranges(cx),
4196 vec![
4197 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
4198 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4199 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
4200 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
4201 ]
4202 );
4203 });
4204 }
4205
4206 #[gpui::test]
4207 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
4208 let buffer = cx.add_model(|cx| Buffer::new(0, "one✅ two three four five six ", cx));
4209 let settings = EditorSettings::test(&cx);
4210 let view = cx
4211 .add_window(Default::default(), |cx| {
4212 build_editor(buffer.clone(), settings, cx)
4213 })
4214 .1;
4215
4216 // Cut with three selections. Clipboard text is divided into three slices.
4217 view.update(cx, |view, cx| {
4218 view.select_ranges(vec![0..7, 11..17, 22..27], false, cx);
4219 view.cut(&Cut, cx);
4220 assert_eq!(view.display_text(cx), "two four six ");
4221 });
4222
4223 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
4224 view.update(cx, |view, cx| {
4225 view.select_ranges(vec![4..4, 9..9, 13..13], false, cx);
4226 view.paste(&Paste, cx);
4227 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
4228 assert_eq!(
4229 view.selection_ranges(cx),
4230 &[
4231 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
4232 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
4233 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
4234 ]
4235 );
4236 });
4237
4238 // Paste again but with only two cursors. Since the number of cursors doesn't
4239 // match the number of slices in the clipboard, the entire clipboard text
4240 // is pasted at each cursor.
4241 view.update(cx, |view, cx| {
4242 view.select_ranges(vec![0..0, 31..31], false, cx);
4243 view.handle_input(&Input("( ".into()), cx);
4244 view.paste(&Paste, cx);
4245 view.handle_input(&Input(") ".into()), cx);
4246 assert_eq!(
4247 view.display_text(cx),
4248 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
4249 );
4250 });
4251
4252 view.update(cx, |view, cx| {
4253 view.select_ranges(vec![0..0], false, cx);
4254 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
4255 assert_eq!(
4256 view.display_text(cx),
4257 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
4258 );
4259 });
4260
4261 // Cut with three selections, one of which is full-line.
4262 view.update(cx, |view, cx| {
4263 view.select_display_ranges(
4264 &[
4265 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
4266 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
4267 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
4268 ],
4269 cx,
4270 )
4271 .unwrap();
4272 view.cut(&Cut, cx);
4273 assert_eq!(
4274 view.display_text(cx),
4275 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
4276 );
4277 });
4278
4279 // Paste with three selections, noticing how the copied selection that was full-line
4280 // gets inserted before the second cursor.
4281 view.update(cx, |view, cx| {
4282 view.select_display_ranges(
4283 &[
4284 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4285 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
4286 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
4287 ],
4288 cx,
4289 )
4290 .unwrap();
4291 view.paste(&Paste, cx);
4292 assert_eq!(
4293 view.display_text(cx),
4294 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
4295 );
4296 assert_eq!(
4297 view.selection_ranges(cx),
4298 &[
4299 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4300 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4301 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
4302 ]
4303 );
4304 });
4305
4306 // Copy with a single cursor only, which writes the whole line into the clipboard.
4307 view.update(cx, |view, cx| {
4308 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx)
4309 .unwrap();
4310 view.copy(&Copy, cx);
4311 });
4312
4313 // Paste with three selections, noticing how the copied full-line selection is inserted
4314 // before the empty selections but replaces the selection that is non-empty.
4315 view.update(cx, |view, cx| {
4316 view.select_display_ranges(
4317 &[
4318 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4319 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
4320 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4321 ],
4322 cx,
4323 )
4324 .unwrap();
4325 view.paste(&Paste, cx);
4326 assert_eq!(
4327 view.display_text(cx),
4328 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
4329 );
4330 assert_eq!(
4331 view.selection_ranges(cx),
4332 &[
4333 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
4334 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
4335 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
4336 ]
4337 );
4338 });
4339 }
4340
4341 #[gpui::test]
4342 fn test_select_all(cx: &mut gpui::MutableAppContext) {
4343 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\nde\nfgh", cx));
4344 let settings = EditorSettings::test(&cx);
4345 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4346 view.update(cx, |view, cx| {
4347 view.select_all(&SelectAll, cx);
4348 assert_eq!(
4349 view.selection_ranges(cx),
4350 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
4351 );
4352 });
4353 }
4354
4355 #[gpui::test]
4356 fn test_select_line(cx: &mut gpui::MutableAppContext) {
4357 let settings = EditorSettings::test(&cx);
4358 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(6, 5), cx));
4359 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4360 view.update(cx, |view, cx| {
4361 view.select_display_ranges(
4362 &[
4363 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
4364 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4365 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4366 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
4367 ],
4368 cx,
4369 )
4370 .unwrap();
4371 view.select_line(&SelectLine, cx);
4372 assert_eq!(
4373 view.selection_ranges(cx),
4374 vec![
4375 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
4376 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
4377 ]
4378 );
4379 });
4380
4381 view.update(cx, |view, cx| {
4382 view.select_line(&SelectLine, cx);
4383 assert_eq!(
4384 view.selection_ranges(cx),
4385 vec![
4386 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
4387 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
4388 ]
4389 );
4390 });
4391
4392 view.update(cx, |view, cx| {
4393 view.select_line(&SelectLine, cx);
4394 assert_eq!(
4395 view.selection_ranges(cx),
4396 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
4397 );
4398 });
4399 }
4400
4401 #[gpui::test]
4402 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
4403 let settings = EditorSettings::test(&cx);
4404 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(9, 5), cx));
4405 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4406 view.update(cx, |view, cx| {
4407 view.fold_ranges(
4408 vec![
4409 Point::new(0, 2)..Point::new(1, 2),
4410 Point::new(2, 3)..Point::new(4, 1),
4411 Point::new(7, 0)..Point::new(8, 4),
4412 ],
4413 cx,
4414 );
4415 view.select_display_ranges(
4416 &[
4417 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
4418 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4419 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4420 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
4421 ],
4422 cx,
4423 )
4424 .unwrap();
4425 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
4426 });
4427
4428 view.update(cx, |view, cx| {
4429 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
4430 assert_eq!(
4431 view.display_text(cx),
4432 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
4433 );
4434 assert_eq!(
4435 view.selection_ranges(cx),
4436 [
4437 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4438 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4439 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
4440 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
4441 ]
4442 );
4443 });
4444
4445 view.update(cx, |view, cx| {
4446 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx)
4447 .unwrap();
4448 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
4449 assert_eq!(
4450 view.display_text(cx),
4451 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
4452 );
4453 assert_eq!(
4454 view.selection_ranges(cx),
4455 [
4456 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4457 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
4458 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
4459 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
4460 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
4461 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
4462 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
4463 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
4464 ]
4465 );
4466 });
4467 }
4468
4469 #[gpui::test]
4470 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
4471 let settings = EditorSettings::test(&cx);
4472 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\ndefghi\n\njk\nlmno\n", cx));
4473 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4474
4475 view.update(cx, |view, cx| {
4476 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx)
4477 .unwrap();
4478 });
4479 view.update(cx, |view, cx| {
4480 view.add_selection_above(&AddSelectionAbove, cx);
4481 assert_eq!(
4482 view.selection_ranges(cx),
4483 vec![
4484 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4485 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
4486 ]
4487 );
4488 });
4489
4490 view.update(cx, |view, cx| {
4491 view.add_selection_above(&AddSelectionAbove, cx);
4492 assert_eq!(
4493 view.selection_ranges(cx),
4494 vec![
4495 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4496 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
4497 ]
4498 );
4499 });
4500
4501 view.update(cx, |view, cx| {
4502 view.add_selection_below(&AddSelectionBelow, cx);
4503 assert_eq!(
4504 view.selection_ranges(cx),
4505 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
4506 );
4507 });
4508
4509 view.update(cx, |view, cx| {
4510 view.add_selection_below(&AddSelectionBelow, cx);
4511 assert_eq!(
4512 view.selection_ranges(cx),
4513 vec![
4514 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
4515 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
4516 ]
4517 );
4518 });
4519
4520 view.update(cx, |view, cx| {
4521 view.add_selection_below(&AddSelectionBelow, cx);
4522 assert_eq!(
4523 view.selection_ranges(cx),
4524 vec![
4525 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
4526 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
4527 ]
4528 );
4529 });
4530
4531 view.update(cx, |view, cx| {
4532 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx)
4533 .unwrap();
4534 });
4535 view.update(cx, |view, cx| {
4536 view.add_selection_below(&AddSelectionBelow, cx);
4537 assert_eq!(
4538 view.selection_ranges(cx),
4539 vec![
4540 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
4541 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
4542 ]
4543 );
4544 });
4545
4546 view.update(cx, |view, cx| {
4547 view.add_selection_below(&AddSelectionBelow, cx);
4548 assert_eq!(
4549 view.selection_ranges(cx),
4550 vec![
4551 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
4552 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
4553 ]
4554 );
4555 });
4556
4557 view.update(cx, |view, cx| {
4558 view.add_selection_above(&AddSelectionAbove, cx);
4559 assert_eq!(
4560 view.selection_ranges(cx),
4561 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
4562 );
4563 });
4564
4565 view.update(cx, |view, cx| {
4566 view.add_selection_above(&AddSelectionAbove, cx);
4567 assert_eq!(
4568 view.selection_ranges(cx),
4569 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
4570 );
4571 });
4572
4573 view.update(cx, |view, cx| {
4574 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx)
4575 .unwrap();
4576 view.add_selection_below(&AddSelectionBelow, cx);
4577 assert_eq!(
4578 view.selection_ranges(cx),
4579 vec![
4580 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
4581 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
4582 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
4583 ]
4584 );
4585 });
4586
4587 view.update(cx, |view, cx| {
4588 view.add_selection_below(&AddSelectionBelow, cx);
4589 assert_eq!(
4590 view.selection_ranges(cx),
4591 vec![
4592 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
4593 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
4594 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
4595 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
4596 ]
4597 );
4598 });
4599
4600 view.update(cx, |view, cx| {
4601 view.add_selection_above(&AddSelectionAbove, cx);
4602 assert_eq!(
4603 view.selection_ranges(cx),
4604 vec![
4605 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
4606 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
4607 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
4608 ]
4609 );
4610 });
4611
4612 view.update(cx, |view, cx| {
4613 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx)
4614 .unwrap();
4615 });
4616 view.update(cx, |view, cx| {
4617 view.add_selection_above(&AddSelectionAbove, cx);
4618 assert_eq!(
4619 view.selection_ranges(cx),
4620 vec![
4621 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
4622 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
4623 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
4624 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
4625 ]
4626 );
4627 });
4628
4629 view.update(cx, |view, cx| {
4630 view.add_selection_below(&AddSelectionBelow, cx);
4631 assert_eq!(
4632 view.selection_ranges(cx),
4633 vec![
4634 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
4635 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
4636 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
4637 ]
4638 );
4639 });
4640 }
4641
4642 #[gpui::test]
4643 async fn test_select_larger_smaller_syntax_node(mut cx: gpui::TestAppContext) {
4644 let settings = cx.read(EditorSettings::test);
4645 let language = Some(Arc::new(Language::new(
4646 LanguageConfig::default(),
4647 tree_sitter_rust::language(),
4648 )));
4649
4650 let text = r#"
4651 use mod1::mod2::{mod3, mod4};
4652
4653 fn fn_1(param1: bool, param2: &str) {
4654 let var1 = "text";
4655 }
4656 "#
4657 .unindent();
4658
4659 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
4660 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
4661 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing())
4662 .await;
4663
4664 view.update(&mut cx, |view, cx| {
4665 view.select_display_ranges(
4666 &[
4667 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
4668 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
4669 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
4670 ],
4671 cx,
4672 )
4673 .unwrap();
4674 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
4675 });
4676 assert_eq!(
4677 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4678 &[
4679 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
4680 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
4681 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
4682 ]
4683 );
4684
4685 view.update(&mut cx, |view, cx| {
4686 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
4687 });
4688 assert_eq!(
4689 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4690 &[
4691 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
4692 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
4693 ]
4694 );
4695
4696 view.update(&mut cx, |view, cx| {
4697 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
4698 });
4699 assert_eq!(
4700 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4701 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
4702 );
4703
4704 // Trying to expand the selected syntax node one more time has no effect.
4705 view.update(&mut cx, |view, cx| {
4706 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
4707 });
4708 assert_eq!(
4709 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4710 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
4711 );
4712
4713 view.update(&mut cx, |view, cx| {
4714 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
4715 });
4716 assert_eq!(
4717 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4718 &[
4719 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
4720 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
4721 ]
4722 );
4723
4724 view.update(&mut cx, |view, cx| {
4725 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
4726 });
4727 assert_eq!(
4728 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4729 &[
4730 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
4731 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
4732 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
4733 ]
4734 );
4735
4736 view.update(&mut cx, |view, cx| {
4737 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
4738 });
4739 assert_eq!(
4740 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4741 &[
4742 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
4743 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
4744 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
4745 ]
4746 );
4747
4748 // Trying to shrink the selected syntax node one more time has no effect.
4749 view.update(&mut cx, |view, cx| {
4750 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
4751 });
4752 assert_eq!(
4753 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4754 &[
4755 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
4756 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
4757 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
4758 ]
4759 );
4760
4761 // Ensure that we keep expanding the selection if the larger selection starts or ends within
4762 // a fold.
4763 view.update(&mut cx, |view, cx| {
4764 view.fold_ranges(
4765 vec![
4766 Point::new(0, 21)..Point::new(0, 24),
4767 Point::new(3, 20)..Point::new(3, 22),
4768 ],
4769 cx,
4770 );
4771 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
4772 });
4773 assert_eq!(
4774 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4775 &[
4776 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
4777 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
4778 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
4779 ]
4780 );
4781 }
4782
4783 #[gpui::test]
4784 async fn test_autoclose_pairs(mut cx: gpui::TestAppContext) {
4785 let settings = cx.read(EditorSettings::test);
4786 let language = Some(Arc::new(Language::new(
4787 LanguageConfig {
4788 brackets: vec![
4789 BracketPair {
4790 start: "{".to_string(),
4791 end: "}".to_string(),
4792 close: true,
4793 newline: true,
4794 },
4795 BracketPair {
4796 start: "/*".to_string(),
4797 end: " */".to_string(),
4798 close: true,
4799 newline: true,
4800 },
4801 ],
4802 ..Default::default()
4803 },
4804 tree_sitter_rust::language(),
4805 )));
4806
4807 let text = r#"
4808 a
4809
4810 /
4811
4812 "#
4813 .unindent();
4814
4815 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
4816 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
4817 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing())
4818 .await;
4819
4820 view.update(&mut cx, |view, cx| {
4821 view.select_display_ranges(
4822 &[
4823 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
4824 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4825 ],
4826 cx,
4827 )
4828 .unwrap();
4829 view.handle_input(&Input("{".to_string()), cx);
4830 view.handle_input(&Input("{".to_string()), cx);
4831 view.handle_input(&Input("{".to_string()), cx);
4832 assert_eq!(
4833 view.text(cx),
4834 "
4835 {{{}}}
4836 {{{}}}
4837 /
4838
4839 "
4840 .unindent()
4841 );
4842
4843 view.move_right(&MoveRight, cx);
4844 view.handle_input(&Input("}".to_string()), cx);
4845 view.handle_input(&Input("}".to_string()), cx);
4846 view.handle_input(&Input("}".to_string()), cx);
4847 assert_eq!(
4848 view.text(cx),
4849 "
4850 {{{}}}}
4851 {{{}}}}
4852 /
4853
4854 "
4855 .unindent()
4856 );
4857
4858 view.undo(&Undo, cx);
4859 view.handle_input(&Input("/".to_string()), cx);
4860 view.handle_input(&Input("*".to_string()), cx);
4861 assert_eq!(
4862 view.text(cx),
4863 "
4864 /* */
4865 /* */
4866 /
4867
4868 "
4869 .unindent()
4870 );
4871
4872 view.undo(&Undo, cx);
4873 view.select_display_ranges(
4874 &[
4875 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4876 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
4877 ],
4878 cx,
4879 )
4880 .unwrap();
4881 view.handle_input(&Input("*".to_string()), cx);
4882 assert_eq!(
4883 view.text(cx),
4884 "
4885 a
4886
4887 /*
4888 *
4889 "
4890 .unindent()
4891 );
4892 });
4893 }
4894
4895 #[gpui::test]
4896 async fn test_extra_newline_insertion(mut cx: gpui::TestAppContext) {
4897 let settings = cx.read(EditorSettings::test);
4898 let language = Some(Arc::new(Language::new(
4899 LanguageConfig {
4900 brackets: vec![
4901 BracketPair {
4902 start: "{".to_string(),
4903 end: "}".to_string(),
4904 close: true,
4905 newline: true,
4906 },
4907 BracketPair {
4908 start: "/* ".to_string(),
4909 end: " */".to_string(),
4910 close: true,
4911 newline: true,
4912 },
4913 ],
4914 ..Default::default()
4915 },
4916 tree_sitter_rust::language(),
4917 )));
4918
4919 let text = concat!(
4920 "{ }\n", // Suppress rustfmt
4921 " x\n", //
4922 " /* */\n", //
4923 "x\n", //
4924 "{{} }\n", //
4925 );
4926
4927 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
4928 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
4929 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing())
4930 .await;
4931
4932 view.update(&mut cx, |view, cx| {
4933 view.select_display_ranges(
4934 &[
4935 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
4936 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
4937 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
4938 ],
4939 cx,
4940 )
4941 .unwrap();
4942 view.newline(&Newline, cx);
4943
4944 assert_eq!(
4945 view.buffer().read(cx).text(),
4946 concat!(
4947 "{ \n", // Suppress rustfmt
4948 "\n", //
4949 "}\n", //
4950 " x\n", //
4951 " /* \n", //
4952 " \n", //
4953 " */\n", //
4954 "x\n", //
4955 "{{} \n", //
4956 "}\n", //
4957 )
4958 );
4959 });
4960 }
4961
4962 impl Editor {
4963 fn selection_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
4964 self.selections_in_range(
4965 self.selection_set_id,
4966 DisplayPoint::zero()..self.max_point(cx),
4967 cx,
4968 )
4969 .collect::<Vec<_>>()
4970 }
4971 }
4972
4973 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
4974 let point = DisplayPoint::new(row as u32, column as u32);
4975 point..point
4976 }
4977
4978 fn build_editor(
4979 buffer: ModelHandle<Buffer>,
4980 settings: EditorSettings,
4981 cx: &mut ViewContext<Editor>,
4982 ) -> Editor {
4983 Editor::for_buffer(buffer, move |_| settings.clone(), cx)
4984 }
4985}
4986
4987trait RangeExt<T> {
4988 fn sorted(&self) -> Range<T>;
4989 fn to_inclusive(&self) -> RangeInclusive<T>;
4990}
4991
4992impl<T: Ord + Clone> RangeExt<T> for Range<T> {
4993 fn sorted(&self) -> Self {
4994 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
4995 }
4996
4997 fn to_inclusive(&self) -> RangeInclusive<T> {
4998 self.start.clone()..=self.end.clone()
4999 }
5000}