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!(Outdent);
48action!(DeleteLine);
49action!(DeleteToPreviousWordBoundary);
50action!(DeleteToNextWordBoundary);
51action!(DeleteToBeginningOfLine);
52action!(DeleteToEndOfLine);
53action!(CutToEndOfLine);
54action!(DuplicateLine);
55action!(MoveLineUp);
56action!(MoveLineDown);
57action!(Cut);
58action!(Copy);
59action!(Paste);
60action!(Undo);
61action!(Redo);
62action!(MoveUp);
63action!(MoveDown);
64action!(MoveLeft);
65action!(MoveRight);
66action!(MoveToPreviousWordBoundary);
67action!(MoveToNextWordBoundary);
68action!(MoveToBeginningOfLine);
69action!(MoveToEndOfLine);
70action!(MoveToBeginning);
71action!(MoveToEnd);
72action!(SelectUp);
73action!(SelectDown);
74action!(SelectLeft);
75action!(SelectRight);
76action!(SelectToPreviousWordBoundary);
77action!(SelectToNextWordBoundary);
78action!(SelectToBeginningOfLine, bool);
79action!(SelectToEndOfLine);
80action!(SelectToBeginning);
81action!(SelectToEnd);
82action!(SelectAll);
83action!(SelectLine);
84action!(SplitSelectionIntoLines);
85action!(AddSelectionAbove);
86action!(AddSelectionBelow);
87action!(ToggleComments);
88action!(SelectLargerSyntaxNode);
89action!(SelectSmallerSyntaxNode);
90action!(MoveToEnclosingBracket);
91action!(ShowNextDiagnostic);
92action!(PageUp);
93action!(PageDown);
94action!(Fold);
95action!(Unfold);
96action!(FoldSelectedRanges);
97action!(Scroll, Vector2F);
98action!(Select, SelectPhase);
99
100pub fn init(cx: &mut MutableAppContext) {
101 cx.add_bindings(vec![
102 Binding::new("escape", Cancel, Some("Editor")),
103 Binding::new("backspace", Backspace, Some("Editor")),
104 Binding::new("ctrl-h", Backspace, Some("Editor")),
105 Binding::new("delete", Delete, Some("Editor")),
106 Binding::new("ctrl-d", Delete, Some("Editor")),
107 Binding::new("enter", Newline, Some("Editor && mode == full")),
108 Binding::new(
109 "alt-enter",
110 Input("\n".into()),
111 Some("Editor && mode == auto_height"),
112 ),
113 Binding::new("tab", Tab, Some("Editor")),
114 Binding::new("shift-tab", Outdent, Some("Editor")),
115 Binding::new("ctrl-shift-K", DeleteLine, Some("Editor")),
116 Binding::new(
117 "alt-backspace",
118 DeleteToPreviousWordBoundary,
119 Some("Editor"),
120 ),
121 Binding::new("alt-h", DeleteToPreviousWordBoundary, Some("Editor")),
122 Binding::new("alt-delete", DeleteToNextWordBoundary, Some("Editor")),
123 Binding::new("alt-d", DeleteToNextWordBoundary, Some("Editor")),
124 Binding::new("cmd-backspace", DeleteToBeginningOfLine, Some("Editor")),
125 Binding::new("cmd-delete", DeleteToEndOfLine, Some("Editor")),
126 Binding::new("ctrl-k", CutToEndOfLine, Some("Editor")),
127 Binding::new("cmd-shift-D", DuplicateLine, Some("Editor")),
128 Binding::new("ctrl-cmd-up", MoveLineUp, Some("Editor")),
129 Binding::new("ctrl-cmd-down", MoveLineDown, Some("Editor")),
130 Binding::new("cmd-x", Cut, Some("Editor")),
131 Binding::new("cmd-c", Copy, Some("Editor")),
132 Binding::new("cmd-v", Paste, Some("Editor")),
133 Binding::new("cmd-z", Undo, Some("Editor")),
134 Binding::new("cmd-shift-Z", Redo, Some("Editor")),
135 Binding::new("up", MoveUp, Some("Editor")),
136 Binding::new("down", MoveDown, Some("Editor")),
137 Binding::new("left", MoveLeft, Some("Editor")),
138 Binding::new("right", MoveRight, Some("Editor")),
139 Binding::new("ctrl-p", MoveUp, Some("Editor")),
140 Binding::new("ctrl-n", MoveDown, Some("Editor")),
141 Binding::new("ctrl-b", MoveLeft, Some("Editor")),
142 Binding::new("ctrl-f", MoveRight, Some("Editor")),
143 Binding::new("alt-left", MoveToPreviousWordBoundary, Some("Editor")),
144 Binding::new("alt-b", MoveToPreviousWordBoundary, Some("Editor")),
145 Binding::new("alt-right", MoveToNextWordBoundary, Some("Editor")),
146 Binding::new("alt-f", MoveToNextWordBoundary, Some("Editor")),
147 Binding::new("cmd-left", MoveToBeginningOfLine, Some("Editor")),
148 Binding::new("ctrl-a", MoveToBeginningOfLine, Some("Editor")),
149 Binding::new("cmd-right", MoveToEndOfLine, Some("Editor")),
150 Binding::new("ctrl-e", MoveToEndOfLine, Some("Editor")),
151 Binding::new("cmd-up", MoveToBeginning, Some("Editor")),
152 Binding::new("cmd-down", MoveToEnd, Some("Editor")),
153 Binding::new("shift-up", SelectUp, Some("Editor")),
154 Binding::new("ctrl-shift-P", SelectUp, Some("Editor")),
155 Binding::new("shift-down", SelectDown, Some("Editor")),
156 Binding::new("ctrl-shift-N", SelectDown, Some("Editor")),
157 Binding::new("shift-left", SelectLeft, Some("Editor")),
158 Binding::new("ctrl-shift-B", SelectLeft, Some("Editor")),
159 Binding::new("shift-right", SelectRight, Some("Editor")),
160 Binding::new("ctrl-shift-F", SelectRight, Some("Editor")),
161 Binding::new(
162 "alt-shift-left",
163 SelectToPreviousWordBoundary,
164 Some("Editor"),
165 ),
166 Binding::new("alt-shift-B", SelectToPreviousWordBoundary, Some("Editor")),
167 Binding::new("alt-shift-right", SelectToNextWordBoundary, Some("Editor")),
168 Binding::new("alt-shift-F", SelectToNextWordBoundary, Some("Editor")),
169 Binding::new(
170 "cmd-shift-left",
171 SelectToBeginningOfLine(true),
172 Some("Editor"),
173 ),
174 Binding::new(
175 "ctrl-shift-A",
176 SelectToBeginningOfLine(true),
177 Some("Editor"),
178 ),
179 Binding::new("cmd-shift-right", SelectToEndOfLine, Some("Editor")),
180 Binding::new("ctrl-shift-E", SelectToEndOfLine, Some("Editor")),
181 Binding::new("cmd-shift-up", SelectToBeginning, Some("Editor")),
182 Binding::new("cmd-shift-down", SelectToEnd, Some("Editor")),
183 Binding::new("cmd-a", SelectAll, Some("Editor")),
184 Binding::new("cmd-l", SelectLine, Some("Editor")),
185 Binding::new("cmd-shift-L", SplitSelectionIntoLines, Some("Editor")),
186 Binding::new("cmd-alt-up", AddSelectionAbove, Some("Editor")),
187 Binding::new("cmd-ctrl-p", AddSelectionAbove, Some("Editor")),
188 Binding::new("cmd-alt-down", AddSelectionBelow, Some("Editor")),
189 Binding::new("cmd-ctrl-n", AddSelectionBelow, Some("Editor")),
190 Binding::new("cmd-/", ToggleComments, Some("Editor")),
191 Binding::new("alt-up", SelectLargerSyntaxNode, Some("Editor")),
192 Binding::new("ctrl-w", SelectLargerSyntaxNode, Some("Editor")),
193 Binding::new("alt-down", SelectSmallerSyntaxNode, Some("Editor")),
194 Binding::new("ctrl-shift-W", SelectSmallerSyntaxNode, Some("Editor")),
195 Binding::new("f8", ShowNextDiagnostic, Some("Editor")),
196 Binding::new("ctrl-m", MoveToEnclosingBracket, Some("Editor")),
197 Binding::new("pageup", PageUp, Some("Editor")),
198 Binding::new("pagedown", PageDown, Some("Editor")),
199 Binding::new("alt-cmd-[", Fold, Some("Editor")),
200 Binding::new("alt-cmd-]", Unfold, Some("Editor")),
201 Binding::new("alt-cmd-f", FoldSelectedRanges, Some("Editor")),
202 ]);
203
204 cx.add_action(|this: &mut Editor, action: &Scroll, cx| this.set_scroll_position(action.0, cx));
205 cx.add_action(Editor::select);
206 cx.add_action(Editor::cancel);
207 cx.add_action(Editor::handle_input);
208 cx.add_action(Editor::newline);
209 cx.add_action(Editor::backspace);
210 cx.add_action(Editor::delete);
211 cx.add_action(Editor::tab);
212 cx.add_action(Editor::outdent);
213 cx.add_action(Editor::delete_line);
214 cx.add_action(Editor::delete_to_previous_word_boundary);
215 cx.add_action(Editor::delete_to_next_word_boundary);
216 cx.add_action(Editor::delete_to_beginning_of_line);
217 cx.add_action(Editor::delete_to_end_of_line);
218 cx.add_action(Editor::cut_to_end_of_line);
219 cx.add_action(Editor::duplicate_line);
220 cx.add_action(Editor::move_line_up);
221 cx.add_action(Editor::move_line_down);
222 cx.add_action(Editor::cut);
223 cx.add_action(Editor::copy);
224 cx.add_action(Editor::paste);
225 cx.add_action(Editor::undo);
226 cx.add_action(Editor::redo);
227 cx.add_action(Editor::move_up);
228 cx.add_action(Editor::move_down);
229 cx.add_action(Editor::move_left);
230 cx.add_action(Editor::move_right);
231 cx.add_action(Editor::move_to_previous_word_boundary);
232 cx.add_action(Editor::move_to_next_word_boundary);
233 cx.add_action(Editor::move_to_beginning_of_line);
234 cx.add_action(Editor::move_to_end_of_line);
235 cx.add_action(Editor::move_to_beginning);
236 cx.add_action(Editor::move_to_end);
237 cx.add_action(Editor::select_up);
238 cx.add_action(Editor::select_down);
239 cx.add_action(Editor::select_left);
240 cx.add_action(Editor::select_right);
241 cx.add_action(Editor::select_to_previous_word_boundary);
242 cx.add_action(Editor::select_to_next_word_boundary);
243 cx.add_action(Editor::select_to_beginning_of_line);
244 cx.add_action(Editor::select_to_end_of_line);
245 cx.add_action(Editor::select_to_beginning);
246 cx.add_action(Editor::select_to_end);
247 cx.add_action(Editor::select_all);
248 cx.add_action(Editor::select_line);
249 cx.add_action(Editor::split_selection_into_lines);
250 cx.add_action(Editor::add_selection_above);
251 cx.add_action(Editor::add_selection_below);
252 cx.add_action(Editor::toggle_comments);
253 cx.add_action(Editor::select_larger_syntax_node);
254 cx.add_action(Editor::select_smaller_syntax_node);
255 cx.add_action(Editor::move_to_enclosing_bracket);
256 cx.add_action(Editor::show_next_diagnostic);
257 cx.add_action(Editor::page_up);
258 cx.add_action(Editor::page_down);
259 cx.add_action(Editor::fold);
260 cx.add_action(Editor::unfold);
261 cx.add_action(Editor::fold_selected_ranges);
262}
263
264trait SelectionExt {
265 fn display_range(&self, map: &DisplayMapSnapshot) -> Range<DisplayPoint>;
266 fn spanned_rows(
267 &self,
268 include_end_if_at_line_start: bool,
269 map: &DisplayMapSnapshot,
270 ) -> SpannedRows;
271}
272
273struct SpannedRows {
274 buffer_rows: Range<u32>,
275 display_rows: Range<u32>,
276}
277
278#[derive(Clone, Debug)]
279pub enum SelectPhase {
280 Begin {
281 position: DisplayPoint,
282 add: bool,
283 },
284 Update {
285 position: DisplayPoint,
286 scroll_position: Vector2F,
287 },
288 End,
289}
290
291#[derive(Copy, Clone, PartialEq, Eq)]
292pub enum EditorMode {
293 SingleLine,
294 AutoHeight { max_lines: usize },
295 Full,
296}
297
298#[derive(Clone)]
299pub struct EditorSettings {
300 pub tab_size: usize,
301 pub style: EditorStyle,
302}
303
304pub struct Editor {
305 handle: WeakViewHandle<Self>,
306 buffer: ModelHandle<Buffer>,
307 display_map: ModelHandle<DisplayMap>,
308 selection_set_id: SelectionSetId,
309 pending_selection: Option<Selection<Anchor>>,
310 next_selection_id: usize,
311 add_selections_state: Option<AddSelectionsState>,
312 autoclose_stack: Vec<BracketPairState>,
313 select_larger_syntax_node_stack: Vec<Box<[Selection<usize>]>>,
314 active_diagnostics: Option<ActiveDiagnosticGroup>,
315 scroll_position: Vector2F,
316 scroll_top_anchor: Anchor,
317 autoscroll_requested: bool,
318 build_settings: Rc<RefCell<dyn Fn(&AppContext) -> EditorSettings>>,
319 focused: bool,
320 show_local_cursors: bool,
321 blink_epoch: usize,
322 blinking_paused: bool,
323 mode: EditorMode,
324 placeholder_text: Option<Arc<str>>,
325}
326
327pub struct Snapshot {
328 pub mode: EditorMode,
329 pub display_snapshot: DisplayMapSnapshot,
330 pub placeholder_text: Option<Arc<str>>,
331 is_focused: bool,
332 scroll_position: Vector2F,
333 scroll_top_anchor: Anchor,
334}
335
336struct AddSelectionsState {
337 above: bool,
338 stack: Vec<usize>,
339}
340
341#[derive(Debug)]
342struct BracketPairState {
343 ranges: AnchorRangeSet,
344 pair: BracketPair,
345}
346
347#[derive(Debug)]
348struct ActiveDiagnosticGroup {
349 primary_range: Range<Anchor>,
350 primary_message: String,
351 blocks: HashMap<BlockId, Diagnostic>,
352 is_valid: bool,
353}
354
355#[derive(Serialize, Deserialize)]
356struct ClipboardSelection {
357 len: usize,
358 is_entire_line: bool,
359}
360
361impl Editor {
362 pub fn single_line(
363 build_settings: impl 'static + Fn(&AppContext) -> EditorSettings,
364 cx: &mut ViewContext<Self>,
365 ) -> Self {
366 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
367 let mut view = Self::for_buffer(buffer, build_settings, cx);
368 view.mode = EditorMode::SingleLine;
369 view
370 }
371
372 pub fn auto_height(
373 max_lines: usize,
374 build_settings: impl 'static + Fn(&AppContext) -> EditorSettings,
375 cx: &mut ViewContext<Self>,
376 ) -> Self {
377 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
378 let mut view = Self::for_buffer(buffer, build_settings, cx);
379 view.mode = EditorMode::AutoHeight { max_lines };
380 view
381 }
382
383 pub fn for_buffer(
384 buffer: ModelHandle<Buffer>,
385 build_settings: impl 'static + Fn(&AppContext) -> EditorSettings,
386 cx: &mut ViewContext<Self>,
387 ) -> Self {
388 Self::new(buffer, Rc::new(RefCell::new(build_settings)), cx)
389 }
390
391 pub fn clone(&self, cx: &mut ViewContext<Self>) -> Self {
392 let mut clone = Self::new(self.buffer.clone(), self.build_settings.clone(), cx);
393 clone.scroll_position = self.scroll_position;
394 clone.scroll_top_anchor = self.scroll_top_anchor.clone();
395 clone
396 }
397
398 pub fn new(
399 buffer: ModelHandle<Buffer>,
400 build_settings: Rc<RefCell<dyn Fn(&AppContext) -> EditorSettings>>,
401 cx: &mut ViewContext<Self>,
402 ) -> Self {
403 let settings = build_settings.borrow_mut()(cx);
404 let display_map = cx.add_model(|cx| {
405 DisplayMap::new(
406 buffer.clone(),
407 settings.tab_size,
408 settings.style.text.font_id,
409 settings.style.text.font_size,
410 None,
411 cx,
412 )
413 });
414 cx.observe(&buffer, Self::on_buffer_changed).detach();
415 cx.subscribe(&buffer, Self::on_buffer_event).detach();
416 cx.observe(&display_map, Self::on_display_map_changed)
417 .detach();
418
419 let mut next_selection_id = 0;
420 let selection_set_id = buffer.update(cx, |buffer, cx| {
421 buffer.add_selection_set(
422 &[Selection {
423 id: post_inc(&mut next_selection_id),
424 start: 0,
425 end: 0,
426 reversed: false,
427 goal: SelectionGoal::None,
428 }],
429 cx,
430 )
431 });
432 Self {
433 handle: cx.handle().downgrade(),
434 buffer,
435 display_map,
436 selection_set_id,
437 pending_selection: None,
438 next_selection_id,
439 add_selections_state: None,
440 autoclose_stack: Default::default(),
441 select_larger_syntax_node_stack: Vec::new(),
442 active_diagnostics: None,
443 build_settings,
444 scroll_position: Vector2F::zero(),
445 scroll_top_anchor: Anchor::min(),
446 autoscroll_requested: false,
447 focused: false,
448 show_local_cursors: false,
449 blink_epoch: 0,
450 blinking_paused: false,
451 mode: EditorMode::Full,
452 placeholder_text: None,
453 }
454 }
455
456 pub fn replica_id(&self, cx: &AppContext) -> ReplicaId {
457 self.buffer.read(cx).replica_id()
458 }
459
460 pub fn buffer(&self) -> &ModelHandle<Buffer> {
461 &self.buffer
462 }
463
464 pub fn snapshot(&mut self, cx: &mut MutableAppContext) -> Snapshot {
465 Snapshot {
466 mode: self.mode,
467 display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
468 scroll_position: self.scroll_position,
469 scroll_top_anchor: self.scroll_top_anchor.clone(),
470 placeholder_text: self.placeholder_text.clone(),
471 is_focused: self
472 .handle
473 .upgrade(cx)
474 .map_or(false, |handle| handle.is_focused(cx)),
475 }
476 }
477
478 pub fn language<'a>(&self, cx: &'a AppContext) -> Option<&'a Arc<Language>> {
479 self.buffer.read(cx).language()
480 }
481
482 pub fn set_placeholder_text(
483 &mut self,
484 placeholder_text: impl Into<Arc<str>>,
485 cx: &mut ViewContext<Self>,
486 ) {
487 self.placeholder_text = Some(placeholder_text.into());
488 cx.notify();
489 }
490
491 fn set_scroll_position(&mut self, scroll_position: Vector2F, cx: &mut ViewContext<Self>) {
492 let map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
493 let scroll_top_buffer_offset =
494 DisplayPoint::new(scroll_position.y() as u32, 0).to_offset(&map, Bias::Right);
495 self.scroll_top_anchor = self
496 .buffer
497 .read(cx)
498 .anchor_at(scroll_top_buffer_offset, Bias::Right);
499 self.scroll_position = vec2f(
500 scroll_position.x(),
501 scroll_position.y() - self.scroll_top_anchor.to_display_point(&map).row() as f32,
502 );
503
504 debug_assert_eq!(
505 compute_scroll_position(&map, self.scroll_position, &self.scroll_top_anchor),
506 scroll_position
507 );
508
509 cx.notify();
510 }
511
512 pub fn clamp_scroll_left(&mut self, max: f32) -> bool {
513 if max < self.scroll_position.x() {
514 self.scroll_position.set_x(max);
515 true
516 } else {
517 false
518 }
519 }
520
521 pub fn autoscroll_vertically(
522 &mut self,
523 viewport_height: f32,
524 line_height: f32,
525 cx: &mut ViewContext<Self>,
526 ) -> bool {
527 let visible_lines = viewport_height / line_height;
528 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
529 let mut scroll_position =
530 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor);
531 let max_scroll_top = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
532 (display_map.max_point().row() as f32 - visible_lines + 1.).max(0.)
533 } else {
534 display_map.max_point().row().saturating_sub(1) as f32
535 };
536 if scroll_position.y() > max_scroll_top {
537 scroll_position.set_y(max_scroll_top);
538 self.set_scroll_position(scroll_position, cx);
539 }
540
541 if self.autoscroll_requested {
542 self.autoscroll_requested = false;
543 } else {
544 return false;
545 }
546
547 let mut selections = self.selections::<Point>(cx).peekable();
548 let first_cursor_top = selections
549 .peek()
550 .unwrap()
551 .head()
552 .to_display_point(&display_map)
553 .row() as f32;
554 let last_cursor_bottom = selections
555 .last()
556 .unwrap()
557 .head()
558 .to_display_point(&display_map)
559 .row() as f32
560 + 1.0;
561
562 let margin = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
563 0.
564 } else {
565 ((visible_lines - (last_cursor_bottom - first_cursor_top)) / 2.0)
566 .floor()
567 .min(3.0)
568 };
569 if margin < 0.0 {
570 return false;
571 }
572
573 let target_top = (first_cursor_top - margin).max(0.0);
574 let target_bottom = last_cursor_bottom + margin;
575 let start_row = scroll_position.y();
576 let end_row = start_row + visible_lines;
577
578 if target_top < start_row {
579 scroll_position.set_y(target_top);
580 self.set_scroll_position(scroll_position, cx);
581 } else if target_bottom >= end_row {
582 scroll_position.set_y(target_bottom - visible_lines);
583 self.set_scroll_position(scroll_position, cx);
584 }
585
586 true
587 }
588
589 pub fn autoscroll_horizontally(
590 &mut self,
591 start_row: u32,
592 viewport_width: f32,
593 scroll_width: f32,
594 max_glyph_width: f32,
595 layouts: &[text_layout::Line],
596 cx: &mut ViewContext<Self>,
597 ) -> bool {
598 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
599 let selections = self.selections::<Point>(cx);
600 let mut target_left = std::f32::INFINITY;
601 let mut target_right = 0.0_f32;
602 for selection in selections {
603 let head = selection.head().to_display_point(&display_map);
604 let start_column = head.column().saturating_sub(3);
605 let end_column = cmp::min(display_map.line_len(head.row()), head.column() + 3);
606 target_left = target_left
607 .min(layouts[(head.row() - start_row) as usize].x_for_index(start_column as usize));
608 target_right = target_right.max(
609 layouts[(head.row() - start_row) as usize].x_for_index(end_column as usize)
610 + max_glyph_width,
611 );
612 }
613 target_right = target_right.min(scroll_width);
614
615 if target_right - target_left > viewport_width {
616 return false;
617 }
618
619 let scroll_left = self.scroll_position.x() * max_glyph_width;
620 let scroll_right = scroll_left + viewport_width;
621
622 if target_left < scroll_left {
623 self.scroll_position.set_x(target_left / max_glyph_width);
624 true
625 } else if target_right > scroll_right {
626 self.scroll_position
627 .set_x((target_right - viewport_width) / max_glyph_width);
628 true
629 } else {
630 false
631 }
632 }
633
634 fn select(&mut self, Select(phase): &Select, cx: &mut ViewContext<Self>) {
635 match phase {
636 SelectPhase::Begin { position, add } => self.begin_selection(*position, *add, cx),
637 SelectPhase::Update {
638 position,
639 scroll_position,
640 } => self.update_selection(*position, *scroll_position, cx),
641 SelectPhase::End => self.end_selection(cx),
642 }
643 }
644
645 fn begin_selection(&mut self, position: DisplayPoint, add: bool, cx: &mut ViewContext<Self>) {
646 if !self.focused {
647 cx.focus_self();
648 cx.emit(Event::Activate);
649 }
650
651 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
652 let buffer = self.buffer.read(cx);
653 let cursor = buffer.anchor_before(position.to_point(&display_map));
654 let selection = Selection {
655 id: post_inc(&mut self.next_selection_id),
656 start: cursor.clone(),
657 end: cursor,
658 reversed: false,
659 goal: SelectionGoal::None,
660 };
661
662 if !add {
663 self.update_selections::<usize>(Vec::new(), false, cx);
664 }
665 self.pending_selection = Some(selection);
666
667 cx.notify();
668 }
669
670 fn update_selection(
671 &mut self,
672 position: DisplayPoint,
673 scroll_position: Vector2F,
674 cx: &mut ViewContext<Self>,
675 ) {
676 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
677 if let Some(pending_selection) = self.pending_selection.as_mut() {
678 let buffer = self.buffer.read(cx);
679 let cursor = buffer.anchor_before(position.to_point(&display_map));
680 if cursor.cmp(&pending_selection.tail(), buffer).unwrap() < Ordering::Equal {
681 if !pending_selection.reversed {
682 pending_selection.end = pending_selection.start.clone();
683 pending_selection.reversed = true;
684 }
685 pending_selection.start = cursor;
686 } else {
687 if pending_selection.reversed {
688 pending_selection.start = pending_selection.end.clone();
689 pending_selection.reversed = false;
690 }
691 pending_selection.end = cursor;
692 }
693 } else {
694 log::error!("update_selection dispatched with no pending selection");
695 return;
696 }
697
698 self.set_scroll_position(scroll_position, cx);
699 cx.notify();
700 }
701
702 fn end_selection(&mut self, cx: &mut ViewContext<Self>) {
703 if self.pending_selection.is_some() {
704 let selections = self.selections::<usize>(cx).collect::<Vec<_>>();
705 self.update_selections(selections, false, cx);
706 }
707 }
708
709 pub fn is_selecting(&self) -> bool {
710 self.pending_selection.is_some()
711 }
712
713 pub fn cancel(&mut self, _: &Cancel, cx: &mut ViewContext<Self>) {
714 if self.active_diagnostics.is_some() {
715 self.dismiss_diagnostics(cx);
716 } else if let Some(pending_selection) = self.pending_selection.take() {
717 let buffer = self.buffer.read(cx);
718 let pending_selection = Selection {
719 id: pending_selection.id,
720 start: pending_selection.start.to_point(buffer),
721 end: pending_selection.end.to_point(buffer),
722 reversed: pending_selection.reversed,
723 goal: pending_selection.goal,
724 };
725 if self.selections::<Point>(cx).next().is_none() {
726 self.update_selections(vec![pending_selection], true, cx);
727 }
728 } else {
729 let mut oldest_selection = self.oldest_selection::<usize>(cx);
730 if self.selection_count(cx) == 1 {
731 oldest_selection.start = oldest_selection.head().clone();
732 oldest_selection.end = oldest_selection.head().clone();
733 }
734 self.update_selections(vec![oldest_selection], true, cx);
735 }
736 }
737
738 fn select_ranges<I, T>(&mut self, ranges: I, autoscroll: bool, cx: &mut ViewContext<Self>)
739 where
740 I: IntoIterator<Item = Range<T>>,
741 T: ToOffset,
742 {
743 let buffer = self.buffer.read(cx);
744 let selections = ranges
745 .into_iter()
746 .map(|range| {
747 let mut start = range.start.to_offset(buffer);
748 let mut end = range.end.to_offset(buffer);
749 let reversed = if start > end {
750 mem::swap(&mut start, &mut end);
751 true
752 } else {
753 false
754 };
755 Selection {
756 id: post_inc(&mut self.next_selection_id),
757 start: start,
758 end: end,
759 reversed,
760 goal: SelectionGoal::None,
761 }
762 })
763 .collect();
764 self.update_selections(selections, autoscroll, cx);
765 }
766
767 #[cfg(test)]
768 fn select_display_ranges<'a, T>(
769 &mut self,
770 ranges: T,
771 cx: &mut ViewContext<Self>,
772 ) -> anyhow::Result<()>
773 where
774 T: IntoIterator<Item = &'a Range<DisplayPoint>>,
775 {
776 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
777 let selections = ranges
778 .into_iter()
779 .map(|range| {
780 let mut start = range.start;
781 let mut end = range.end;
782 let reversed = if start > end {
783 mem::swap(&mut start, &mut end);
784 true
785 } else {
786 false
787 };
788 Selection {
789 id: post_inc(&mut self.next_selection_id),
790 start: start.to_point(&display_map),
791 end: end.to_point(&display_map),
792 reversed,
793 goal: SelectionGoal::None,
794 }
795 })
796 .collect();
797 self.update_selections(selections, false, cx);
798 Ok(())
799 }
800
801 pub fn handle_input(&mut self, action: &Input, cx: &mut ViewContext<Self>) {
802 let text = action.0.as_ref();
803 if !self.skip_autoclose_end(text, cx) {
804 self.start_transaction(cx);
805 self.insert(text, cx);
806 self.autoclose_pairs(cx);
807 self.end_transaction(cx);
808 }
809 }
810
811 pub fn newline(&mut self, _: &Newline, cx: &mut ViewContext<Self>) {
812 self.start_transaction(cx);
813 let mut old_selections = SmallVec::<[_; 32]>::new();
814 {
815 let selections = self.selections::<Point>(cx).collect::<Vec<_>>();
816 let buffer = self.buffer.read(cx);
817 for selection in selections.iter() {
818 let start_point = selection.start;
819 let indent = buffer
820 .indent_column_for_line(start_point.row)
821 .min(start_point.column);
822 let start = selection.start.to_offset(buffer);
823 let end = selection.end.to_offset(buffer);
824
825 let mut insert_extra_newline = false;
826 if let Some(language) = buffer.language() {
827 let leading_whitespace_len = buffer
828 .reversed_chars_at(start)
829 .take_while(|c| c.is_whitespace() && *c != '\n')
830 .map(|c| c.len_utf8())
831 .sum::<usize>();
832
833 let trailing_whitespace_len = buffer
834 .chars_at(end)
835 .take_while(|c| c.is_whitespace() && *c != '\n')
836 .map(|c| c.len_utf8())
837 .sum::<usize>();
838
839 insert_extra_newline = language.brackets().iter().any(|pair| {
840 let pair_start = pair.start.trim_end();
841 let pair_end = pair.end.trim_start();
842
843 pair.newline
844 && buffer.contains_str_at(end + trailing_whitespace_len, pair_end)
845 && buffer.contains_str_at(
846 (start - leading_whitespace_len).saturating_sub(pair_start.len()),
847 pair_start,
848 )
849 });
850 }
851
852 old_selections.push((selection.id, start..end, indent, insert_extra_newline));
853 }
854 }
855
856 let mut new_selections = Vec::with_capacity(old_selections.len());
857 self.buffer.update(cx, |buffer, cx| {
858 let mut delta = 0_isize;
859 let mut pending_edit: Option<PendingEdit> = None;
860 for (_, range, indent, insert_extra_newline) in &old_selections {
861 if pending_edit.as_ref().map_or(false, |pending| {
862 pending.indent != *indent
863 || pending.insert_extra_newline != *insert_extra_newline
864 }) {
865 let pending = pending_edit.take().unwrap();
866 let mut new_text = String::with_capacity(1 + pending.indent as usize);
867 new_text.push('\n');
868 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
869 if pending.insert_extra_newline {
870 new_text = new_text.repeat(2);
871 }
872 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
873 delta += pending.delta;
874 }
875
876 let start = (range.start as isize + delta) as usize;
877 let end = (range.end as isize + delta) as usize;
878 let mut text_len = *indent as usize + 1;
879 if *insert_extra_newline {
880 text_len *= 2;
881 }
882
883 let pending = pending_edit.get_or_insert_with(Default::default);
884 pending.delta += text_len as isize - (end - start) as isize;
885 pending.indent = *indent;
886 pending.insert_extra_newline = *insert_extra_newline;
887 pending.ranges.push(start..end);
888 }
889
890 let pending = pending_edit.unwrap();
891 let mut new_text = String::with_capacity(1 + pending.indent as usize);
892 new_text.push('\n');
893 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
894 if pending.insert_extra_newline {
895 new_text = new_text.repeat(2);
896 }
897 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
898
899 let mut delta = 0_isize;
900 new_selections.extend(old_selections.into_iter().map(
901 |(id, range, indent, insert_extra_newline)| {
902 let start = (range.start as isize + delta) as usize;
903 let end = (range.end as isize + delta) as usize;
904 let text_before_cursor_len = indent as usize + 1;
905 let cursor = start + text_before_cursor_len;
906 let text_len = if insert_extra_newline {
907 text_before_cursor_len * 2
908 } else {
909 text_before_cursor_len
910 };
911 delta += text_len as isize - (end - start) as isize;
912 Selection {
913 id,
914 start: cursor,
915 end: cursor,
916 reversed: false,
917 goal: SelectionGoal::None,
918 }
919 },
920 ))
921 });
922
923 self.update_selections(new_selections, true, cx);
924 self.end_transaction(cx);
925
926 #[derive(Default)]
927 struct PendingEdit {
928 indent: u32,
929 insert_extra_newline: bool,
930 delta: isize,
931 ranges: SmallVec<[Range<usize>; 32]>,
932 }
933 }
934
935 fn insert(&mut self, text: &str, cx: &mut ViewContext<Self>) {
936 self.start_transaction(cx);
937 let old_selections = self.selections::<usize>(cx).collect::<SmallVec<[_; 32]>>();
938 let mut new_selections = Vec::new();
939 self.buffer.update(cx, |buffer, cx| {
940 let edit_ranges = old_selections.iter().map(|s| s.start..s.end);
941 buffer.edit_with_autoindent(edit_ranges, text, cx);
942 let text_len = text.len() as isize;
943 let mut delta = 0_isize;
944 new_selections = old_selections
945 .into_iter()
946 .map(|selection| {
947 let start = selection.start as isize;
948 let end = selection.end as isize;
949 let cursor = (start + delta + text_len) as usize;
950 let deleted_count = end - start;
951 delta += text_len - deleted_count;
952 Selection {
953 id: selection.id,
954 start: cursor,
955 end: cursor,
956 reversed: false,
957 goal: SelectionGoal::None,
958 }
959 })
960 .collect();
961 });
962
963 self.update_selections(new_selections, true, cx);
964 self.end_transaction(cx);
965 }
966
967 fn autoclose_pairs(&mut self, cx: &mut ViewContext<Self>) {
968 let selections = self.selections::<usize>(cx).collect::<Vec<_>>();
969 let new_autoclose_pair_state = self.buffer.update(cx, |buffer, cx| {
970 let autoclose_pair = buffer.language().and_then(|language| {
971 let first_selection_start = selections.first().unwrap().start;
972 let pair = language.brackets().iter().find(|pair| {
973 buffer.contains_str_at(
974 first_selection_start.saturating_sub(pair.start.len()),
975 &pair.start,
976 )
977 });
978 pair.and_then(|pair| {
979 let should_autoclose = selections[1..].iter().all(|selection| {
980 buffer.contains_str_at(
981 selection.start.saturating_sub(pair.start.len()),
982 &pair.start,
983 )
984 });
985
986 if should_autoclose {
987 Some(pair.clone())
988 } else {
989 None
990 }
991 })
992 });
993
994 autoclose_pair.and_then(|pair| {
995 let selection_ranges = selections
996 .iter()
997 .map(|selection| {
998 let start = selection.start.to_offset(&*buffer);
999 start..start
1000 })
1001 .collect::<SmallVec<[_; 32]>>();
1002
1003 buffer.edit(selection_ranges, &pair.end, cx);
1004
1005 if pair.end.len() == 1 {
1006 let mut delta = 0;
1007 Some(BracketPairState {
1008 ranges: buffer.anchor_range_set(
1009 Bias::Left,
1010 Bias::Right,
1011 selections.iter().map(move |selection| {
1012 let offset = selection.start + delta;
1013 delta += 1;
1014 offset..offset
1015 }),
1016 ),
1017 pair,
1018 })
1019 } else {
1020 None
1021 }
1022 })
1023 });
1024 self.autoclose_stack.extend(new_autoclose_pair_state);
1025 }
1026
1027 fn skip_autoclose_end(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
1028 let old_selections = self.selections::<usize>(cx).collect::<Vec<_>>();
1029 let autoclose_pair_state = if let Some(autoclose_pair_state) = self.autoclose_stack.last() {
1030 autoclose_pair_state
1031 } else {
1032 return false;
1033 };
1034 if text != autoclose_pair_state.pair.end {
1035 return false;
1036 }
1037
1038 debug_assert_eq!(old_selections.len(), autoclose_pair_state.ranges.len());
1039
1040 let buffer = self.buffer.read(cx);
1041 if old_selections
1042 .iter()
1043 .zip(autoclose_pair_state.ranges.ranges::<usize, _>(buffer))
1044 .all(|(selection, autoclose_range)| {
1045 let autoclose_range_end = autoclose_range.end.to_offset(buffer);
1046 selection.is_empty() && selection.start == autoclose_range_end
1047 })
1048 {
1049 let new_selections = old_selections
1050 .into_iter()
1051 .map(|selection| {
1052 let cursor = selection.start + 1;
1053 Selection {
1054 id: selection.id,
1055 start: cursor,
1056 end: cursor,
1057 reversed: false,
1058 goal: SelectionGoal::None,
1059 }
1060 })
1061 .collect();
1062 self.autoclose_stack.pop();
1063 self.update_selections(new_selections, true, cx);
1064 true
1065 } else {
1066 false
1067 }
1068 }
1069
1070 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
1071 self.start_transaction(cx);
1072 self.select_all(&SelectAll, cx);
1073 self.insert("", cx);
1074 self.end_transaction(cx);
1075 }
1076
1077 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
1078 self.start_transaction(cx);
1079 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1080 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1081 for selection in &mut selections {
1082 if selection.is_empty() {
1083 let head = selection.head().to_display_point(&display_map);
1084 let cursor = movement::left(&display_map, head)
1085 .unwrap()
1086 .to_point(&display_map);
1087 selection.set_head(cursor);
1088 selection.goal = SelectionGoal::None;
1089 }
1090 }
1091 self.update_selections(selections, true, cx);
1092 self.insert("", cx);
1093 self.end_transaction(cx);
1094 }
1095
1096 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
1097 self.start_transaction(cx);
1098 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1099 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1100 for selection in &mut selections {
1101 if selection.is_empty() {
1102 let head = selection.head().to_display_point(&display_map);
1103 let cursor = movement::right(&display_map, head)
1104 .unwrap()
1105 .to_point(&display_map);
1106 selection.set_head(cursor);
1107 selection.goal = SelectionGoal::None;
1108 }
1109 }
1110 self.update_selections(selections, true, cx);
1111 self.insert(&"", cx);
1112 self.end_transaction(cx);
1113 }
1114
1115 pub fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
1116 self.start_transaction(cx);
1117 let tab_size = self.build_settings.borrow()(cx).tab_size;
1118 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1119 let mut last_indent = None;
1120 self.buffer.update(cx, |buffer, cx| {
1121 for selection in &mut selections {
1122 if selection.is_empty() {
1123 let char_column = buffer
1124 .chars_for_range(Point::new(selection.start.row, 0)..selection.start)
1125 .count();
1126 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
1127 buffer.edit(
1128 [selection.start..selection.start],
1129 " ".repeat(chars_to_next_tab_stop),
1130 cx,
1131 );
1132 selection.start.column += chars_to_next_tab_stop as u32;
1133 selection.end = selection.start;
1134 } else {
1135 let mut start_row = selection.start.row;
1136 let mut end_row = selection.end.row + 1;
1137
1138 // If a selection ends at the beginning of a line, don't indent
1139 // that last line.
1140 if selection.end.column == 0 {
1141 end_row -= 1;
1142 }
1143
1144 // Avoid re-indenting a row that has already been indented by a
1145 // previous selection, but still update this selection's column
1146 // to reflect that indentation.
1147 if let Some((last_indent_row, last_indent_len)) = last_indent {
1148 if last_indent_row == selection.start.row {
1149 selection.start.column += last_indent_len;
1150 start_row += 1;
1151 }
1152 if last_indent_row == selection.end.row {
1153 selection.end.column += last_indent_len;
1154 }
1155 }
1156
1157 for row in start_row..end_row {
1158 let indent_column = buffer.indent_column_for_line(row) as usize;
1159 let columns_to_next_tab_stop = tab_size - (indent_column % tab_size);
1160 let row_start = Point::new(row, 0);
1161 buffer.edit(
1162 [row_start..row_start],
1163 " ".repeat(columns_to_next_tab_stop),
1164 cx,
1165 );
1166
1167 // Update this selection's endpoints to reflect the indentation.
1168 if row == selection.start.row {
1169 selection.start.column += columns_to_next_tab_stop as u32;
1170 }
1171 if row == selection.end.row {
1172 selection.end.column += columns_to_next_tab_stop as u32;
1173 }
1174
1175 last_indent = Some((row, columns_to_next_tab_stop as u32));
1176 }
1177 }
1178 }
1179 });
1180
1181 self.update_selections(selections, true, cx);
1182 self.end_transaction(cx);
1183 }
1184
1185 pub fn outdent(&mut self, _: &Outdent, cx: &mut ViewContext<Self>) {
1186 self.start_transaction(cx);
1187 let tab_size = self.build_settings.borrow()(cx).tab_size;
1188 let selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1189 let mut deletion_ranges = Vec::new();
1190 let mut last_outdent = None;
1191 self.buffer.update(cx, |buffer, cx| {
1192 for selection in &selections {
1193 let mut start_row = selection.start.row;
1194 let mut end_row = selection.end.row + 1;
1195
1196 // If a selection ends at the beginning of a line, don't indent
1197 // that last line.
1198 if selection.end.column == 0 {
1199 end_row -= 1;
1200 }
1201
1202 // Avoid re-outdenting a row that has already been outdented by a
1203 // previous selection.
1204 if let Some(last_row) = last_outdent {
1205 if last_row == selection.start.row {
1206 start_row += 1;
1207 }
1208 }
1209
1210 for row in start_row..end_row {
1211 let column = buffer.indent_column_for_line(row) as usize;
1212 if column > 0 {
1213 let mut deletion_len = (column % tab_size) as u32;
1214 if deletion_len == 0 {
1215 deletion_len = tab_size as u32;
1216 }
1217 deletion_ranges.push(Point::new(row, 0)..Point::new(row, deletion_len));
1218 last_outdent = Some(row);
1219 }
1220 }
1221 }
1222 buffer.edit(deletion_ranges, "", cx);
1223 });
1224
1225 self.update_selections(self.selections::<usize>(cx).collect(), true, cx);
1226 self.end_transaction(cx);
1227 }
1228
1229 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
1230 self.start_transaction(cx);
1231
1232 let selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1233 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1234 let buffer = self.buffer.read(cx);
1235
1236 let mut row_delta = 0;
1237 let mut new_cursors = Vec::new();
1238 let mut edit_ranges = Vec::new();
1239 let mut selections = selections.iter().peekable();
1240 while let Some(selection) = selections.next() {
1241 let mut rows = selection.spanned_rows(false, &display_map).buffer_rows;
1242 let goal_display_column = selection.head().to_display_point(&display_map).column();
1243
1244 // Accumulate contiguous regions of rows that we want to delete.
1245 while let Some(next_selection) = selections.peek() {
1246 let next_rows = next_selection.spanned_rows(false, &display_map).buffer_rows;
1247 if next_rows.start <= rows.end {
1248 rows.end = next_rows.end;
1249 selections.next().unwrap();
1250 } else {
1251 break;
1252 }
1253 }
1254
1255 let mut edit_start = Point::new(rows.start, 0).to_offset(buffer);
1256 let edit_end;
1257 let cursor_buffer_row;
1258 if buffer.max_point().row >= rows.end {
1259 // If there's a line after the range, delete the \n from the end of the row range
1260 // and position the cursor on the next line.
1261 edit_end = Point::new(rows.end, 0).to_offset(buffer);
1262 cursor_buffer_row = rows.start;
1263 } else {
1264 // If there isn't a line after the range, delete the \n from the line before the
1265 // start of the row range and position the cursor there.
1266 edit_start = edit_start.saturating_sub(1);
1267 edit_end = buffer.len();
1268 cursor_buffer_row = rows.start.saturating_sub(1);
1269 }
1270
1271 let mut cursor =
1272 Point::new(cursor_buffer_row - row_delta, 0).to_display_point(&display_map);
1273 *cursor.column_mut() =
1274 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
1275 row_delta += rows.len() as u32;
1276
1277 new_cursors.push((selection.id, cursor.to_point(&display_map)));
1278 edit_ranges.push(edit_start..edit_end);
1279 }
1280
1281 new_cursors.sort_unstable_by_key(|(_, point)| point.clone());
1282 let new_selections = new_cursors
1283 .into_iter()
1284 .map(|(id, cursor)| Selection {
1285 id,
1286 start: cursor,
1287 end: cursor,
1288 reversed: false,
1289 goal: SelectionGoal::None,
1290 })
1291 .collect();
1292 self.buffer
1293 .update(cx, |buffer, cx| buffer.edit(edit_ranges, "", cx));
1294 self.update_selections(new_selections, true, cx);
1295 self.end_transaction(cx);
1296 }
1297
1298 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
1299 self.start_transaction(cx);
1300
1301 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1302 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1303 let buffer = self.buffer.read(cx);
1304
1305 let mut edits = Vec::new();
1306 let mut selections_iter = selections.iter().peekable();
1307 while let Some(selection) = selections_iter.next() {
1308 // Avoid duplicating the same lines twice.
1309 let mut rows = selection.spanned_rows(false, &display_map).buffer_rows;
1310
1311 while let Some(next_selection) = selections_iter.peek() {
1312 let next_rows = next_selection.spanned_rows(false, &display_map).buffer_rows;
1313 if next_rows.start <= rows.end - 1 {
1314 rows.end = next_rows.end;
1315 selections_iter.next().unwrap();
1316 } else {
1317 break;
1318 }
1319 }
1320
1321 // Copy the text from the selected row region and splice it at the start of the region.
1322 let start = Point::new(rows.start, 0);
1323 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
1324 let text = buffer
1325 .text_for_range(start..end)
1326 .chain(Some("\n"))
1327 .collect::<String>();
1328 edits.push((start, text, rows.len() as u32));
1329 }
1330
1331 let mut edits_iter = edits.iter().peekable();
1332 let mut row_delta = 0;
1333 for selection in selections.iter_mut() {
1334 while let Some((point, _, line_count)) = edits_iter.peek() {
1335 if *point <= selection.start {
1336 row_delta += line_count;
1337 edits_iter.next();
1338 } else {
1339 break;
1340 }
1341 }
1342 selection.start.row += row_delta;
1343 selection.end.row += row_delta;
1344 }
1345
1346 self.buffer.update(cx, |buffer, cx| {
1347 for (point, text, _) in edits.into_iter().rev() {
1348 buffer.edit(Some(point..point), text, cx);
1349 }
1350 });
1351
1352 self.update_selections(selections, true, cx);
1353 self.end_transaction(cx);
1354 }
1355
1356 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
1357 self.start_transaction(cx);
1358
1359 let selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1360 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1361 let buffer = self.buffer.read(cx);
1362
1363 let mut edits = Vec::new();
1364 let mut new_selection_ranges = Vec::new();
1365 let mut old_folds = Vec::new();
1366 let mut new_folds = Vec::new();
1367
1368 let mut selections = selections.iter().peekable();
1369 let mut contiguous_selections = Vec::new();
1370 while let Some(selection) = selections.next() {
1371 // Accumulate contiguous regions of rows that we want to move.
1372 contiguous_selections.push(selection.point_range(buffer));
1373 let SpannedRows {
1374 mut buffer_rows,
1375 mut display_rows,
1376 } = selection.spanned_rows(false, &display_map);
1377
1378 while let Some(next_selection) = selections.peek() {
1379 let SpannedRows {
1380 buffer_rows: next_buffer_rows,
1381 display_rows: next_display_rows,
1382 } = next_selection.spanned_rows(false, &display_map);
1383 if next_buffer_rows.start <= buffer_rows.end {
1384 buffer_rows.end = next_buffer_rows.end;
1385 display_rows.end = next_display_rows.end;
1386 contiguous_selections.push(next_selection.point_range(buffer));
1387 selections.next().unwrap();
1388 } else {
1389 break;
1390 }
1391 }
1392
1393 // Cut the text from the selected rows and paste it at the start of the previous line.
1394 if display_rows.start != 0 {
1395 let start = Point::new(buffer_rows.start, 0).to_offset(buffer);
1396 let end = Point::new(buffer_rows.end - 1, buffer.line_len(buffer_rows.end - 1))
1397 .to_offset(buffer);
1398
1399 let prev_row_display_start = DisplayPoint::new(display_rows.start - 1, 0);
1400 let prev_row_buffer_start = display_map.prev_row_boundary(prev_row_display_start).1;
1401 let prev_row_buffer_start_offset = prev_row_buffer_start.to_offset(buffer);
1402
1403 let mut text = String::new();
1404 text.extend(buffer.text_for_range(start..end));
1405 text.push('\n');
1406 edits.push((
1407 prev_row_buffer_start_offset..prev_row_buffer_start_offset,
1408 text,
1409 ));
1410 edits.push((start - 1..end, String::new()));
1411
1412 let row_delta = buffer_rows.start - prev_row_buffer_start.row;
1413
1414 // Move selections up.
1415 for range in &mut contiguous_selections {
1416 range.start.row -= row_delta;
1417 range.end.row -= row_delta;
1418 }
1419
1420 // Move folds up.
1421 old_folds.push(start..end);
1422 for fold in display_map.folds_in_range(start..end) {
1423 let mut start = fold.start.to_point(buffer);
1424 let mut end = fold.end.to_point(buffer);
1425 start.row -= row_delta;
1426 end.row -= row_delta;
1427 new_folds.push(start..end);
1428 }
1429 }
1430
1431 new_selection_ranges.extend(contiguous_selections.drain(..));
1432 }
1433
1434 self.unfold_ranges(old_folds, cx);
1435 self.buffer.update(cx, |buffer, cx| {
1436 for (range, text) in edits.into_iter().rev() {
1437 buffer.edit(Some(range), text, cx);
1438 }
1439 });
1440 self.fold_ranges(new_folds, cx);
1441 self.select_ranges(new_selection_ranges, true, cx);
1442
1443 self.end_transaction(cx);
1444 }
1445
1446 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
1447 self.start_transaction(cx);
1448
1449 let selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1450 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1451 let buffer = self.buffer.read(cx);
1452
1453 let mut edits = Vec::new();
1454 let mut new_selection_ranges = Vec::new();
1455 let mut old_folds = Vec::new();
1456 let mut new_folds = Vec::new();
1457
1458 let mut selections = selections.iter().peekable();
1459 let mut contiguous_selections = Vec::new();
1460 while let Some(selection) = selections.next() {
1461 // Accumulate contiguous regions of rows that we want to move.
1462 contiguous_selections.push(selection.point_range(buffer));
1463 let SpannedRows {
1464 mut buffer_rows,
1465 mut display_rows,
1466 } = selection.spanned_rows(false, &display_map);
1467 while let Some(next_selection) = selections.peek() {
1468 let SpannedRows {
1469 buffer_rows: next_buffer_rows,
1470 display_rows: next_display_rows,
1471 } = next_selection.spanned_rows(false, &display_map);
1472 if next_buffer_rows.start <= buffer_rows.end {
1473 buffer_rows.end = next_buffer_rows.end;
1474 display_rows.end = next_display_rows.end;
1475 contiguous_selections.push(next_selection.point_range(buffer));
1476 selections.next().unwrap();
1477 } else {
1478 break;
1479 }
1480 }
1481
1482 // Cut the text from the selected rows and paste it at the end of the next line.
1483 if display_rows.end <= display_map.max_point().row() {
1484 let start = Point::new(buffer_rows.start, 0).to_offset(buffer);
1485 let end = Point::new(buffer_rows.end - 1, buffer.line_len(buffer_rows.end - 1))
1486 .to_offset(buffer);
1487
1488 let next_row_display_end =
1489 DisplayPoint::new(display_rows.end, display_map.line_len(display_rows.end));
1490 let next_row_buffer_end = display_map.next_row_boundary(next_row_display_end).1;
1491 let next_row_buffer_end_offset = next_row_buffer_end.to_offset(buffer);
1492
1493 let mut text = String::new();
1494 text.push('\n');
1495 text.extend(buffer.text_for_range(start..end));
1496 edits.push((start..end + 1, String::new()));
1497 edits.push((next_row_buffer_end_offset..next_row_buffer_end_offset, text));
1498
1499 let row_delta = next_row_buffer_end.row - buffer_rows.end + 1;
1500
1501 // Move selections down.
1502 for range in &mut contiguous_selections {
1503 range.start.row += row_delta;
1504 range.end.row += row_delta;
1505 }
1506
1507 // Move folds down.
1508 old_folds.push(start..end);
1509 for fold in display_map.folds_in_range(start..end) {
1510 let mut start = fold.start.to_point(buffer);
1511 let mut end = fold.end.to_point(buffer);
1512 start.row += row_delta;
1513 end.row += row_delta;
1514 new_folds.push(start..end);
1515 }
1516 }
1517
1518 new_selection_ranges.extend(contiguous_selections.drain(..));
1519 }
1520
1521 self.unfold_ranges(old_folds, cx);
1522 self.buffer.update(cx, |buffer, cx| {
1523 for (range, text) in edits.into_iter().rev() {
1524 buffer.edit(Some(range), text, cx);
1525 }
1526 });
1527 self.fold_ranges(new_folds, cx);
1528 self.select_ranges(new_selection_ranges, true, cx);
1529
1530 self.end_transaction(cx);
1531 }
1532
1533 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
1534 self.start_transaction(cx);
1535 let mut text = String::new();
1536 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1537 let mut clipboard_selections = Vec::with_capacity(selections.len());
1538 {
1539 let buffer = self.buffer.read(cx);
1540 let max_point = buffer.max_point();
1541 for selection in &mut selections {
1542 let is_entire_line = selection.is_empty();
1543 if is_entire_line {
1544 selection.start = Point::new(selection.start.row, 0);
1545 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
1546 }
1547 let mut len = 0;
1548 for chunk in buffer.text_for_range(selection.start..selection.end) {
1549 text.push_str(chunk);
1550 len += chunk.len();
1551 }
1552 clipboard_selections.push(ClipboardSelection {
1553 len,
1554 is_entire_line,
1555 });
1556 }
1557 }
1558 self.update_selections(selections, true, cx);
1559 self.insert("", cx);
1560 self.end_transaction(cx);
1561
1562 cx.as_mut()
1563 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
1564 }
1565
1566 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
1567 let selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1568 let buffer = self.buffer.read(cx);
1569 let max_point = buffer.max_point();
1570 let mut text = String::new();
1571 let mut clipboard_selections = Vec::with_capacity(selections.len());
1572 for selection in selections.iter() {
1573 let mut start = selection.start;
1574 let mut end = selection.end;
1575 let is_entire_line = selection.is_empty();
1576 if is_entire_line {
1577 start = Point::new(start.row, 0);
1578 end = cmp::min(max_point, Point::new(start.row + 1, 0));
1579 }
1580 let mut len = 0;
1581 for chunk in buffer.text_for_range(start..end) {
1582 text.push_str(chunk);
1583 len += chunk.len();
1584 }
1585 clipboard_selections.push(ClipboardSelection {
1586 len,
1587 is_entire_line,
1588 });
1589 }
1590
1591 cx.as_mut()
1592 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
1593 }
1594
1595 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
1596 if let Some(item) = cx.as_mut().read_from_clipboard() {
1597 let clipboard_text = item.text();
1598 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
1599 let mut selections = self.selections::<usize>(cx).collect::<Vec<_>>();
1600 let all_selections_were_entire_line =
1601 clipboard_selections.iter().all(|s| s.is_entire_line);
1602 if clipboard_selections.len() != selections.len() {
1603 clipboard_selections.clear();
1604 }
1605
1606 let mut delta = 0_isize;
1607 let mut start_offset = 0;
1608 for (i, selection) in selections.iter_mut().enumerate() {
1609 let to_insert;
1610 let entire_line;
1611 if let Some(clipboard_selection) = clipboard_selections.get(i) {
1612 let end_offset = start_offset + clipboard_selection.len;
1613 to_insert = &clipboard_text[start_offset..end_offset];
1614 entire_line = clipboard_selection.is_entire_line;
1615 start_offset = end_offset
1616 } else {
1617 to_insert = clipboard_text.as_str();
1618 entire_line = all_selections_were_entire_line;
1619 }
1620
1621 selection.start = (selection.start as isize + delta) as usize;
1622 selection.end = (selection.end as isize + delta) as usize;
1623
1624 self.buffer.update(cx, |buffer, cx| {
1625 // If the corresponding selection was empty when this slice of the
1626 // clipboard text was written, then the entire line containing the
1627 // selection was copied. If this selection is also currently empty,
1628 // then paste the line before the current line of the buffer.
1629 let range = if selection.is_empty() && entire_line {
1630 let column = selection.start.to_point(&*buffer).column as usize;
1631 let line_start = selection.start - column;
1632 line_start..line_start
1633 } else {
1634 selection.start..selection.end
1635 };
1636
1637 delta += to_insert.len() as isize - range.len() as isize;
1638 buffer.edit([range], to_insert, cx);
1639 selection.start += to_insert.len();
1640 selection.end = selection.start;
1641 });
1642 }
1643 self.update_selections(selections, true, cx);
1644 } else {
1645 self.insert(clipboard_text, cx);
1646 }
1647 }
1648 }
1649
1650 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
1651 self.buffer.update(cx, |buffer, cx| buffer.undo(cx));
1652 self.request_autoscroll(cx);
1653 }
1654
1655 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
1656 self.buffer.update(cx, |buffer, cx| buffer.redo(cx));
1657 self.request_autoscroll(cx);
1658 }
1659
1660 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
1661 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1662 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1663 for selection in &mut selections {
1664 let start = selection.start.to_display_point(&display_map);
1665 let end = selection.end.to_display_point(&display_map);
1666
1667 if start != end {
1668 selection.end = selection.start.clone();
1669 } else {
1670 let cursor = movement::left(&display_map, start)
1671 .unwrap()
1672 .to_point(&display_map);
1673 selection.start = cursor.clone();
1674 selection.end = cursor;
1675 }
1676 selection.reversed = false;
1677 selection.goal = SelectionGoal::None;
1678 }
1679 self.update_selections(selections, true, cx);
1680 }
1681
1682 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
1683 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1684 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1685 for selection in &mut selections {
1686 let head = selection.head().to_display_point(&display_map);
1687 let cursor = movement::left(&display_map, head)
1688 .unwrap()
1689 .to_point(&display_map);
1690 selection.set_head(cursor);
1691 selection.goal = SelectionGoal::None;
1692 }
1693 self.update_selections(selections, true, cx);
1694 }
1695
1696 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
1697 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1698 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1699 for selection in &mut selections {
1700 let start = selection.start.to_display_point(&display_map);
1701 let end = selection.end.to_display_point(&display_map);
1702
1703 if start != end {
1704 selection.start = selection.end.clone();
1705 } else {
1706 let cursor = movement::right(&display_map, end)
1707 .unwrap()
1708 .to_point(&display_map);
1709 selection.start = cursor;
1710 selection.end = cursor;
1711 }
1712 selection.reversed = false;
1713 selection.goal = SelectionGoal::None;
1714 }
1715 self.update_selections(selections, true, cx);
1716 }
1717
1718 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
1719 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1720 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1721 for selection in &mut selections {
1722 let head = selection.head().to_display_point(&display_map);
1723 let cursor = movement::right(&display_map, head)
1724 .unwrap()
1725 .to_point(&display_map);
1726 selection.set_head(cursor);
1727 selection.goal = SelectionGoal::None;
1728 }
1729 self.update_selections(selections, true, cx);
1730 }
1731
1732 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
1733 if matches!(self.mode, EditorMode::SingleLine) {
1734 cx.propagate_action();
1735 return;
1736 }
1737
1738 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1739 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1740 for selection in &mut selections {
1741 let start = selection.start.to_display_point(&display_map);
1742 let end = selection.end.to_display_point(&display_map);
1743 if start != end {
1744 selection.goal = SelectionGoal::None;
1745 }
1746
1747 let (start, goal) = movement::up(&display_map, start, selection.goal).unwrap();
1748 let cursor = start.to_point(&display_map);
1749 selection.start = cursor;
1750 selection.end = cursor;
1751 selection.goal = goal;
1752 selection.reversed = false;
1753 }
1754 self.update_selections(selections, true, cx);
1755 }
1756
1757 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
1758 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1759 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1760 for selection in &mut selections {
1761 let head = selection.head().to_display_point(&display_map);
1762 let (head, goal) = movement::up(&display_map, head, selection.goal).unwrap();
1763 let cursor = head.to_point(&display_map);
1764 selection.set_head(cursor);
1765 selection.goal = goal;
1766 }
1767 self.update_selections(selections, true, cx);
1768 }
1769
1770 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
1771 if matches!(self.mode, EditorMode::SingleLine) {
1772 cx.propagate_action();
1773 return;
1774 }
1775
1776 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1777 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1778 for selection in &mut selections {
1779 let start = selection.start.to_display_point(&display_map);
1780 let end = selection.end.to_display_point(&display_map);
1781 if start != end {
1782 selection.goal = SelectionGoal::None;
1783 }
1784
1785 let (start, goal) = movement::down(&display_map, end, selection.goal).unwrap();
1786 let cursor = start.to_point(&display_map);
1787 selection.start = cursor;
1788 selection.end = cursor;
1789 selection.goal = goal;
1790 selection.reversed = false;
1791 }
1792 self.update_selections(selections, true, cx);
1793 }
1794
1795 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
1796 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1797 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1798 for selection in &mut selections {
1799 let head = selection.head().to_display_point(&display_map);
1800 let (head, goal) = movement::down(&display_map, head, selection.goal).unwrap();
1801 let cursor = head.to_point(&display_map);
1802 selection.set_head(cursor);
1803 selection.goal = goal;
1804 }
1805 self.update_selections(selections, true, cx);
1806 }
1807
1808 pub fn move_to_previous_word_boundary(
1809 &mut self,
1810 _: &MoveToPreviousWordBoundary,
1811 cx: &mut ViewContext<Self>,
1812 ) {
1813 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1814 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1815 for selection in &mut selections {
1816 let head = selection.head().to_display_point(&display_map);
1817 let new_head = movement::prev_word_boundary(&display_map, head).unwrap();
1818 let cursor = new_head.to_point(&display_map);
1819 selection.start = cursor.clone();
1820 selection.end = cursor;
1821 selection.reversed = false;
1822 selection.goal = SelectionGoal::None;
1823 }
1824 self.update_selections(selections, true, cx);
1825 }
1826
1827 pub fn select_to_previous_word_boundary(
1828 &mut self,
1829 _: &SelectToPreviousWordBoundary,
1830 cx: &mut ViewContext<Self>,
1831 ) {
1832 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1833 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1834 for selection in &mut selections {
1835 let head = selection.head().to_display_point(&display_map);
1836 let new_head = movement::prev_word_boundary(&display_map, head).unwrap();
1837 let cursor = new_head.to_point(&display_map);
1838 selection.set_head(cursor);
1839 selection.goal = SelectionGoal::None;
1840 }
1841 self.update_selections(selections, true, cx);
1842 }
1843
1844 pub fn delete_to_previous_word_boundary(
1845 &mut self,
1846 _: &DeleteToPreviousWordBoundary,
1847 cx: &mut ViewContext<Self>,
1848 ) {
1849 self.start_transaction(cx);
1850 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1851 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1852 for selection in &mut selections {
1853 if selection.is_empty() {
1854 let head = selection.head().to_display_point(&display_map);
1855 let new_head = movement::prev_word_boundary(&display_map, head).unwrap();
1856 let cursor = new_head.to_point(&display_map);
1857 selection.set_head(cursor);
1858 selection.goal = SelectionGoal::None;
1859 }
1860 }
1861 self.update_selections(selections, true, cx);
1862 self.insert("", cx);
1863 self.end_transaction(cx);
1864 }
1865
1866 pub fn move_to_next_word_boundary(
1867 &mut self,
1868 _: &MoveToNextWordBoundary,
1869 cx: &mut ViewContext<Self>,
1870 ) {
1871 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1872 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1873 for selection in &mut selections {
1874 let head = selection.head().to_display_point(&display_map);
1875 let new_head = movement::next_word_boundary(&display_map, head).unwrap();
1876 let cursor = new_head.to_point(&display_map);
1877 selection.start = cursor;
1878 selection.end = cursor;
1879 selection.reversed = false;
1880 selection.goal = SelectionGoal::None;
1881 }
1882 self.update_selections(selections, true, cx);
1883 }
1884
1885 pub fn select_to_next_word_boundary(
1886 &mut self,
1887 _: &SelectToNextWordBoundary,
1888 cx: &mut ViewContext<Self>,
1889 ) {
1890 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1891 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1892 for selection in &mut selections {
1893 let head = selection.head().to_display_point(&display_map);
1894 let new_head = movement::next_word_boundary(&display_map, head).unwrap();
1895 let cursor = new_head.to_point(&display_map);
1896 selection.set_head(cursor);
1897 selection.goal = SelectionGoal::None;
1898 }
1899 self.update_selections(selections, true, cx);
1900 }
1901
1902 pub fn delete_to_next_word_boundary(
1903 &mut self,
1904 _: &DeleteToNextWordBoundary,
1905 cx: &mut ViewContext<Self>,
1906 ) {
1907 self.start_transaction(cx);
1908 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1909 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1910 for selection in &mut selections {
1911 if selection.is_empty() {
1912 let head = selection.head().to_display_point(&display_map);
1913 let new_head = movement::next_word_boundary(&display_map, head).unwrap();
1914 let cursor = new_head.to_point(&display_map);
1915 selection.set_head(cursor);
1916 selection.goal = SelectionGoal::None;
1917 }
1918 }
1919 self.update_selections(selections, true, cx);
1920 self.insert("", cx);
1921 self.end_transaction(cx);
1922 }
1923
1924 pub fn move_to_beginning_of_line(
1925 &mut self,
1926 _: &MoveToBeginningOfLine,
1927 cx: &mut ViewContext<Self>,
1928 ) {
1929 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1930 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1931 for selection in &mut selections {
1932 let head = selection.head().to_display_point(&display_map);
1933 let new_head = movement::line_beginning(&display_map, head, true).unwrap();
1934 let cursor = new_head.to_point(&display_map);
1935 selection.start = cursor;
1936 selection.end = cursor;
1937 selection.reversed = false;
1938 selection.goal = SelectionGoal::None;
1939 }
1940 self.update_selections(selections, true, cx);
1941 }
1942
1943 pub fn select_to_beginning_of_line(
1944 &mut self,
1945 SelectToBeginningOfLine(toggle_indent): &SelectToBeginningOfLine,
1946 cx: &mut ViewContext<Self>,
1947 ) {
1948 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1949 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1950 for selection in &mut selections {
1951 let head = selection.head().to_display_point(&display_map);
1952 let new_head = movement::line_beginning(&display_map, head, *toggle_indent).unwrap();
1953 selection.set_head(new_head.to_point(&display_map));
1954 selection.goal = SelectionGoal::None;
1955 }
1956 self.update_selections(selections, true, cx);
1957 }
1958
1959 pub fn delete_to_beginning_of_line(
1960 &mut self,
1961 _: &DeleteToBeginningOfLine,
1962 cx: &mut ViewContext<Self>,
1963 ) {
1964 self.start_transaction(cx);
1965 self.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
1966 self.backspace(&Backspace, cx);
1967 self.end_transaction(cx);
1968 }
1969
1970 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
1971 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1972 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1973 {
1974 for selection in &mut selections {
1975 let head = selection.head().to_display_point(&display_map);
1976 let new_head = movement::line_end(&display_map, head).unwrap();
1977 let anchor = new_head.to_point(&display_map);
1978 selection.start = anchor.clone();
1979 selection.end = anchor;
1980 selection.reversed = false;
1981 selection.goal = SelectionGoal::None;
1982 }
1983 }
1984 self.update_selections(selections, true, cx);
1985 }
1986
1987 pub fn select_to_end_of_line(&mut self, _: &SelectToEndOfLine, cx: &mut ViewContext<Self>) {
1988 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1989 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1990 for selection in &mut selections {
1991 let head = selection.head().to_display_point(&display_map);
1992 let new_head = movement::line_end(&display_map, head).unwrap();
1993 selection.set_head(new_head.to_point(&display_map));
1994 selection.goal = SelectionGoal::None;
1995 }
1996 self.update_selections(selections, true, cx);
1997 }
1998
1999 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
2000 self.start_transaction(cx);
2001 self.select_to_end_of_line(&SelectToEndOfLine, cx);
2002 self.delete(&Delete, cx);
2003 self.end_transaction(cx);
2004 }
2005
2006 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
2007 self.start_transaction(cx);
2008 self.select_to_end_of_line(&SelectToEndOfLine, cx);
2009 self.cut(&Cut, cx);
2010 self.end_transaction(cx);
2011 }
2012
2013 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
2014 let selection = Selection {
2015 id: post_inc(&mut self.next_selection_id),
2016 start: 0,
2017 end: 0,
2018 reversed: false,
2019 goal: SelectionGoal::None,
2020 };
2021 self.update_selections(vec![selection], true, cx);
2022 }
2023
2024 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
2025 let mut selection = self.selections::<Point>(cx).last().unwrap().clone();
2026 selection.set_head(Point::zero());
2027 self.update_selections(vec![selection], true, cx);
2028 }
2029
2030 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
2031 let buffer = self.buffer.read(cx);
2032 let cursor = buffer.len();
2033 let selection = Selection {
2034 id: post_inc(&mut self.next_selection_id),
2035 start: cursor,
2036 end: cursor,
2037 reversed: false,
2038 goal: SelectionGoal::None,
2039 };
2040 self.update_selections(vec![selection], true, cx);
2041 }
2042
2043 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
2044 let mut selection = self.selections::<usize>(cx).last().unwrap().clone();
2045 selection.set_head(self.buffer.read(cx).len());
2046 self.update_selections(vec![selection], true, cx);
2047 }
2048
2049 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
2050 let selection = Selection {
2051 id: post_inc(&mut self.next_selection_id),
2052 start: 0,
2053 end: self.buffer.read(cx).len(),
2054 reversed: false,
2055 goal: SelectionGoal::None,
2056 };
2057 self.update_selections(vec![selection], false, cx);
2058 }
2059
2060 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
2061 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2062 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
2063 let buffer = self.buffer.read(cx);
2064 let max_point = buffer.max_point();
2065 for selection in &mut selections {
2066 let rows = selection.spanned_rows(true, &display_map).buffer_rows;
2067 selection.start = Point::new(rows.start, 0);
2068 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
2069 selection.reversed = false;
2070 }
2071 self.update_selections(selections, true, cx);
2072 }
2073
2074 pub fn split_selection_into_lines(
2075 &mut self,
2076 _: &SplitSelectionIntoLines,
2077 cx: &mut ViewContext<Self>,
2078 ) {
2079 let selections = self.selections::<Point>(cx).collect::<Vec<_>>();
2080 let buffer = self.buffer.read(cx);
2081
2082 let mut to_unfold = Vec::new();
2083 let mut new_selections = Vec::new();
2084 for selection in selections.iter() {
2085 for row in selection.start.row..selection.end.row {
2086 let cursor = Point::new(row, buffer.line_len(row));
2087 new_selections.push(Selection {
2088 id: post_inc(&mut self.next_selection_id),
2089 start: cursor,
2090 end: cursor,
2091 reversed: false,
2092 goal: SelectionGoal::None,
2093 });
2094 }
2095 new_selections.push(Selection {
2096 id: selection.id,
2097 start: selection.end,
2098 end: selection.end,
2099 reversed: false,
2100 goal: SelectionGoal::None,
2101 });
2102 to_unfold.push(selection.start..selection.end);
2103 }
2104 self.unfold_ranges(to_unfold, cx);
2105 self.update_selections(new_selections, true, cx);
2106 }
2107
2108 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
2109 self.add_selection(true, cx);
2110 }
2111
2112 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
2113 self.add_selection(false, cx);
2114 }
2115
2116 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
2117 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2118 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
2119 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
2120 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
2121 let range = oldest_selection.display_range(&display_map).sorted();
2122 let columns = cmp::min(range.start.column(), range.end.column())
2123 ..cmp::max(range.start.column(), range.end.column());
2124
2125 selections.clear();
2126 let mut stack = Vec::new();
2127 for row in range.start.row()..=range.end.row() {
2128 if let Some(selection) = self.build_columnar_selection(
2129 &display_map,
2130 row,
2131 &columns,
2132 oldest_selection.reversed,
2133 ) {
2134 stack.push(selection.id);
2135 selections.push(selection);
2136 }
2137 }
2138
2139 if above {
2140 stack.reverse();
2141 }
2142
2143 AddSelectionsState { above, stack }
2144 });
2145
2146 let last_added_selection = *state.stack.last().unwrap();
2147 let mut new_selections = Vec::new();
2148 if above == state.above {
2149 let end_row = if above {
2150 0
2151 } else {
2152 display_map.max_point().row()
2153 };
2154
2155 'outer: for selection in selections {
2156 if selection.id == last_added_selection {
2157 let range = selection.display_range(&display_map).sorted();
2158 debug_assert_eq!(range.start.row(), range.end.row());
2159 let mut row = range.start.row();
2160 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
2161 {
2162 start..end
2163 } else {
2164 cmp::min(range.start.column(), range.end.column())
2165 ..cmp::max(range.start.column(), range.end.column())
2166 };
2167
2168 while row != end_row {
2169 if above {
2170 row -= 1;
2171 } else {
2172 row += 1;
2173 }
2174
2175 if let Some(new_selection) = self.build_columnar_selection(
2176 &display_map,
2177 row,
2178 &columns,
2179 selection.reversed,
2180 ) {
2181 state.stack.push(new_selection.id);
2182 if above {
2183 new_selections.push(new_selection);
2184 new_selections.push(selection);
2185 } else {
2186 new_selections.push(selection);
2187 new_selections.push(new_selection);
2188 }
2189
2190 continue 'outer;
2191 }
2192 }
2193 }
2194
2195 new_selections.push(selection);
2196 }
2197 } else {
2198 new_selections = selections;
2199 new_selections.retain(|s| s.id != last_added_selection);
2200 state.stack.pop();
2201 }
2202
2203 self.update_selections(new_selections, true, cx);
2204 if state.stack.len() > 1 {
2205 self.add_selections_state = Some(state);
2206 }
2207 }
2208
2209 pub fn toggle_comments(&mut self, _: &ToggleComments, cx: &mut ViewContext<Self>) {
2210 // Get the line comment prefix. Split its trailing whitespace into a separate string,
2211 // as that portion won't be used for detecting if a line is a comment.
2212 let full_comment_prefix =
2213 if let Some(prefix) = self.language(cx).and_then(|l| l.line_comment_prefix()) {
2214 prefix.to_string()
2215 } else {
2216 return;
2217 };
2218 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
2219 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
2220
2221 self.start_transaction(cx);
2222 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
2223 let mut all_selection_lines_are_comments = true;
2224 let mut edit_ranges = Vec::new();
2225 let mut last_toggled_row = None;
2226 self.buffer.update(cx, |buffer, cx| {
2227 for selection in &mut selections {
2228 edit_ranges.clear();
2229
2230 let end_row =
2231 if selection.end.row > selection.start.row && selection.end.column == 0 {
2232 selection.end.row
2233 } else {
2234 selection.end.row + 1
2235 };
2236
2237 for row in selection.start.row..end_row {
2238 // If multiple selections contain a given row, avoid processing that
2239 // row more than once.
2240 if last_toggled_row == Some(row) {
2241 continue;
2242 } else {
2243 last_toggled_row = Some(row);
2244 }
2245
2246 if buffer.is_line_blank(row) {
2247 continue;
2248 }
2249
2250 let start = Point::new(row, buffer.indent_column_for_line(row));
2251 let mut line_bytes = buffer.bytes_at(start);
2252
2253 // If this line currently begins with the line comment prefix, then record
2254 // the range containing the prefix.
2255 if all_selection_lines_are_comments
2256 && line_bytes
2257 .by_ref()
2258 .take(comment_prefix.len())
2259 .eq(comment_prefix.bytes())
2260 {
2261 // Include any whitespace that matches the comment prefix.
2262 let matching_whitespace_len = line_bytes
2263 .zip(comment_prefix_whitespace.bytes())
2264 .take_while(|(a, b)| a == b)
2265 .count() as u32;
2266 let end = Point::new(
2267 row,
2268 start.column + comment_prefix.len() as u32 + matching_whitespace_len,
2269 );
2270 edit_ranges.push(start..end);
2271 }
2272 // If this line does not begin with the line comment prefix, then record
2273 // the position where the prefix should be inserted.
2274 else {
2275 all_selection_lines_are_comments = false;
2276 edit_ranges.push(start..start);
2277 }
2278 }
2279
2280 if !edit_ranges.is_empty() {
2281 if all_selection_lines_are_comments {
2282 buffer.edit(edit_ranges.iter().cloned(), "", cx);
2283 } else {
2284 let min_column = edit_ranges.iter().map(|r| r.start.column).min().unwrap();
2285 let edit_ranges = edit_ranges.iter().map(|range| {
2286 let position = Point::new(range.start.row, min_column);
2287 position..position
2288 });
2289 buffer.edit(edit_ranges, &full_comment_prefix, cx);
2290 }
2291 }
2292 }
2293 });
2294
2295 self.update_selections(self.selections::<usize>(cx).collect(), true, cx);
2296 self.end_transaction(cx);
2297 }
2298
2299 pub fn select_larger_syntax_node(
2300 &mut self,
2301 _: &SelectLargerSyntaxNode,
2302 cx: &mut ViewContext<Self>,
2303 ) {
2304 let old_selections = self.selections::<usize>(cx).collect::<Box<_>>();
2305 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2306 let buffer = self.buffer.read(cx);
2307
2308 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
2309 let mut selected_larger_node = false;
2310 let mut new_selections = old_selections
2311 .iter()
2312 .map(|selection| {
2313 let old_range = selection.start..selection.end;
2314 let mut new_range = old_range.clone();
2315 while let Some(containing_range) =
2316 buffer.range_for_syntax_ancestor(new_range.clone())
2317 {
2318 new_range = containing_range;
2319 if !display_map.intersects_fold(new_range.start)
2320 && !display_map.intersects_fold(new_range.end)
2321 {
2322 break;
2323 }
2324 }
2325
2326 selected_larger_node |= new_range != old_range;
2327 Selection {
2328 id: selection.id,
2329 start: new_range.start,
2330 end: new_range.end,
2331 goal: SelectionGoal::None,
2332 reversed: selection.reversed,
2333 }
2334 })
2335 .collect::<Vec<_>>();
2336
2337 if selected_larger_node {
2338 stack.push(old_selections);
2339 new_selections.sort_unstable_by_key(|selection| selection.start);
2340 self.update_selections(new_selections, true, cx);
2341 }
2342 self.select_larger_syntax_node_stack = stack;
2343 }
2344
2345 pub fn select_smaller_syntax_node(
2346 &mut self,
2347 _: &SelectSmallerSyntaxNode,
2348 cx: &mut ViewContext<Self>,
2349 ) {
2350 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
2351 if let Some(selections) = stack.pop() {
2352 self.update_selections(selections.to_vec(), true, cx);
2353 }
2354 self.select_larger_syntax_node_stack = stack;
2355 }
2356
2357 pub fn move_to_enclosing_bracket(
2358 &mut self,
2359 _: &MoveToEnclosingBracket,
2360 cx: &mut ViewContext<Self>,
2361 ) {
2362 let mut selections = self.selections::<usize>(cx).collect::<Vec<_>>();
2363 let buffer = self.buffer.read(cx.as_ref());
2364 for selection in &mut selections {
2365 if let Some((open_range, close_range)) =
2366 buffer.enclosing_bracket_ranges(selection.start..selection.end)
2367 {
2368 let close_range = close_range.to_inclusive();
2369 let destination = if close_range.contains(&selection.start)
2370 && close_range.contains(&selection.end)
2371 {
2372 open_range.end
2373 } else {
2374 *close_range.start()
2375 };
2376 selection.start = destination;
2377 selection.end = destination;
2378 }
2379 }
2380
2381 self.update_selections(selections, true, cx);
2382 }
2383
2384 pub fn show_next_diagnostic(&mut self, _: &ShowNextDiagnostic, cx: &mut ViewContext<Self>) {
2385 let selection = self.newest_selection::<usize>(cx);
2386 let buffer = self.buffer.read(cx.as_ref());
2387 let active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
2388 active_diagnostics
2389 .primary_range
2390 .to_offset(buffer)
2391 .to_inclusive()
2392 });
2393 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
2394 if active_primary_range.contains(&selection.head()) {
2395 *active_primary_range.end()
2396 } else {
2397 selection.head()
2398 }
2399 } else {
2400 selection.head()
2401 };
2402
2403 loop {
2404 let next_group = buffer
2405 .diagnostics_in_range::<_, usize>(search_start..buffer.len())
2406 .find_map(|(range, diagnostic)| {
2407 if diagnostic.is_primary
2408 && !range.is_empty()
2409 && Some(range.end) != active_primary_range.as_ref().map(|r| *r.end())
2410 {
2411 Some((range, diagnostic.group_id))
2412 } else {
2413 None
2414 }
2415 });
2416
2417 if let Some((primary_range, group_id)) = next_group {
2418 self.activate_diagnostics(group_id, cx);
2419 self.update_selections(
2420 vec![Selection {
2421 id: selection.id,
2422 start: primary_range.start,
2423 end: primary_range.start,
2424 reversed: false,
2425 goal: SelectionGoal::None,
2426 }],
2427 true,
2428 cx,
2429 );
2430 break;
2431 } else if search_start == 0 {
2432 break;
2433 } else {
2434 // Cycle around to the start of the buffer.
2435 search_start = 0;
2436 }
2437 }
2438 }
2439
2440 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
2441 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
2442 let buffer = self.buffer.read(cx);
2443 let primary_range_start = active_diagnostics.primary_range.start.to_offset(buffer);
2444 let is_valid = buffer
2445 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone())
2446 .any(|(range, diagnostic)| {
2447 diagnostic.is_primary
2448 && !range.is_empty()
2449 && range.start == primary_range_start
2450 && diagnostic.message == active_diagnostics.primary_message
2451 });
2452
2453 if is_valid != active_diagnostics.is_valid {
2454 active_diagnostics.is_valid = is_valid;
2455 let mut new_styles = HashMap::new();
2456 for (block_id, diagnostic) in &active_diagnostics.blocks {
2457 let severity = diagnostic.severity;
2458 let message_len = diagnostic.message.len();
2459 new_styles.insert(
2460 *block_id,
2461 (
2462 Some({
2463 let build_settings = self.build_settings.clone();
2464 move |cx: &AppContext| {
2465 let settings = build_settings.borrow()(cx);
2466 vec![(
2467 message_len,
2468 diagnostic_style(severity, is_valid, &settings.style)
2469 .text
2470 .into(),
2471 )]
2472 }
2473 }),
2474 Some({
2475 let build_settings = self.build_settings.clone();
2476 move |cx: &AppContext| {
2477 let settings = build_settings.borrow()(cx);
2478 diagnostic_style(severity, is_valid, &settings.style).block
2479 }
2480 }),
2481 ),
2482 );
2483 }
2484 self.display_map
2485 .update(cx, |display_map, _| display_map.restyle_blocks(new_styles));
2486 }
2487 }
2488 }
2489
2490 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) {
2491 self.dismiss_diagnostics(cx);
2492 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
2493 let buffer = self.buffer.read(cx);
2494
2495 let mut primary_range = None;
2496 let mut primary_message = None;
2497 let mut group_end = Point::zero();
2498 let diagnostic_group = buffer
2499 .diagnostic_group::<Point>(group_id)
2500 .map(|(range, diagnostic)| {
2501 if range.end > group_end {
2502 group_end = range.end;
2503 }
2504 if diagnostic.is_primary {
2505 primary_range = Some(range.clone());
2506 primary_message = Some(diagnostic.message.clone());
2507 }
2508 (range, diagnostic.clone())
2509 })
2510 .collect::<Vec<_>>();
2511 let primary_range = primary_range.unwrap();
2512 let primary_message = primary_message.unwrap();
2513 let primary_range =
2514 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
2515
2516 let blocks = display_map
2517 .insert_blocks(
2518 diagnostic_group.iter().map(|(range, diagnostic)| {
2519 let build_settings = self.build_settings.clone();
2520 let message_len = diagnostic.message.len();
2521 let severity = diagnostic.severity;
2522 BlockProperties {
2523 position: range.start,
2524 text: diagnostic.message.as_str(),
2525 build_runs: Some(Arc::new({
2526 let build_settings = build_settings.clone();
2527 move |cx| {
2528 let settings = build_settings.borrow()(cx);
2529 vec![(
2530 message_len,
2531 diagnostic_style(severity, true, &settings.style)
2532 .text
2533 .into(),
2534 )]
2535 }
2536 })),
2537 build_style: Some(Arc::new({
2538 let build_settings = build_settings.clone();
2539 move |cx| {
2540 let settings = build_settings.borrow()(cx);
2541 diagnostic_style(severity, true, &settings.style).block
2542 }
2543 })),
2544 disposition: BlockDisposition::Below,
2545 }
2546 }),
2547 cx,
2548 )
2549 .into_iter()
2550 .zip(
2551 diagnostic_group
2552 .into_iter()
2553 .map(|(_, diagnostic)| diagnostic),
2554 )
2555 .collect();
2556
2557 Some(ActiveDiagnosticGroup {
2558 primary_range,
2559 primary_message,
2560 blocks,
2561 is_valid: true,
2562 })
2563 });
2564 }
2565
2566 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
2567 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
2568 self.display_map.update(cx, |display_map, cx| {
2569 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
2570 });
2571 cx.notify();
2572 }
2573 }
2574
2575 fn build_columnar_selection(
2576 &mut self,
2577 display_map: &DisplayMapSnapshot,
2578 row: u32,
2579 columns: &Range<u32>,
2580 reversed: bool,
2581 ) -> Option<Selection<Point>> {
2582 let is_empty = columns.start == columns.end;
2583 let line_len = display_map.line_len(row);
2584 if columns.start < line_len || (is_empty && columns.start == line_len) {
2585 let start = DisplayPoint::new(row, columns.start);
2586 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
2587 Some(Selection {
2588 id: post_inc(&mut self.next_selection_id),
2589 start: start.to_point(display_map),
2590 end: end.to_point(display_map),
2591 reversed,
2592 goal: SelectionGoal::ColumnRange {
2593 start: columns.start,
2594 end: columns.end,
2595 },
2596 })
2597 } else {
2598 None
2599 }
2600 }
2601
2602 pub fn active_selection_sets<'a>(
2603 &'a self,
2604 cx: &'a AppContext,
2605 ) -> impl 'a + Iterator<Item = SelectionSetId> {
2606 let buffer = self.buffer.read(cx);
2607 let replica_id = buffer.replica_id();
2608 buffer
2609 .selection_sets()
2610 .filter(move |(set_id, set)| {
2611 set.active && (set_id.replica_id != replica_id || **set_id == self.selection_set_id)
2612 })
2613 .map(|(set_id, _)| *set_id)
2614 }
2615
2616 pub fn selections_in_range<'a>(
2617 &'a self,
2618 set_id: SelectionSetId,
2619 range: Range<DisplayPoint>,
2620 cx: &'a mut MutableAppContext,
2621 ) -> impl 'a + Iterator<Item = Range<DisplayPoint>> {
2622 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2623 let buffer = self.buffer.read(cx);
2624 let selections = self
2625 .buffer
2626 .read(cx)
2627 .selection_set(set_id)
2628 .unwrap()
2629 .selections::<Point, _>(buffer)
2630 .collect::<Vec<_>>();
2631 let start = range.start.to_point(&display_map);
2632 let start_index = self.selection_insertion_index(&selections, start);
2633 let pending_selection = if set_id == self.selection_set_id {
2634 self.pending_selection.as_ref().and_then(|pending| {
2635 let mut selection_start = pending.start.to_display_point(&display_map);
2636 let mut selection_end = pending.end.to_display_point(&display_map);
2637 if pending.reversed {
2638 mem::swap(&mut selection_start, &mut selection_end);
2639 }
2640 if selection_start <= range.end || selection_end <= range.end {
2641 Some(selection_start..selection_end)
2642 } else {
2643 None
2644 }
2645 })
2646 } else {
2647 None
2648 };
2649 selections
2650 .into_iter()
2651 .skip(start_index)
2652 .map(move |s| s.display_range(&display_map))
2653 .take_while(move |r| r.start <= range.end || r.end <= range.end)
2654 .chain(pending_selection)
2655 }
2656
2657 fn selection_insertion_index(&self, selections: &[Selection<Point>], start: Point) -> usize {
2658 match selections.binary_search_by_key(&start, |probe| probe.start) {
2659 Ok(index) => index,
2660 Err(index) => {
2661 if index > 0 && selections[index - 1].end > start {
2662 index - 1
2663 } else {
2664 index
2665 }
2666 }
2667 }
2668 }
2669
2670 pub fn selections<'a, D>(&self, cx: &'a AppContext) -> impl 'a + Iterator<Item = Selection<D>>
2671 where
2672 D: 'a + TextDimension<'a> + Ord,
2673 {
2674 let buffer = self.buffer.read(cx);
2675 let mut selections = self.selection_set(cx).selections::<D, _>(buffer).peekable();
2676 let mut pending_selection = self.pending_selection(cx);
2677 iter::from_fn(move || {
2678 if let Some(pending) = pending_selection.as_mut() {
2679 while let Some(next_selection) = selections.peek() {
2680 if pending.start <= next_selection.end && pending.end >= next_selection.start {
2681 let next_selection = selections.next().unwrap();
2682 if next_selection.start < pending.start {
2683 pending.start = next_selection.start;
2684 }
2685 if next_selection.end > pending.end {
2686 pending.end = next_selection.end;
2687 }
2688 } else if next_selection.end < pending.start {
2689 return selections.next();
2690 } else {
2691 break;
2692 }
2693 }
2694
2695 pending_selection.take()
2696 } else {
2697 selections.next()
2698 }
2699 })
2700 }
2701
2702 fn pending_selection<'a, D>(&self, cx: &'a AppContext) -> Option<Selection<D>>
2703 where
2704 D: 'a + TextDimension<'a>,
2705 {
2706 let buffer = self.buffer.read(cx);
2707 self.pending_selection.as_ref().map(|selection| Selection {
2708 id: selection.id,
2709 start: selection.start.summary::<D, _>(buffer),
2710 end: selection.end.summary::<D, _>(buffer),
2711 reversed: selection.reversed,
2712 goal: selection.goal,
2713 })
2714 }
2715
2716 fn selection_count<'a>(&self, cx: &'a AppContext) -> usize {
2717 let mut selection_count = self.selection_set(cx).len();
2718 if self.pending_selection.is_some() {
2719 selection_count += 1;
2720 }
2721 selection_count
2722 }
2723
2724 pub fn oldest_selection<'a, T>(&self, cx: &'a AppContext) -> Selection<T>
2725 where
2726 T: 'a + TextDimension<'a>,
2727 {
2728 let buffer = self.buffer.read(cx);
2729 self.selection_set(cx)
2730 .oldest_selection(buffer)
2731 .or_else(|| self.pending_selection(cx))
2732 .unwrap()
2733 }
2734
2735 pub fn newest_selection<'a, T>(&self, cx: &'a AppContext) -> Selection<T>
2736 where
2737 T: 'a + TextDimension<'a>,
2738 {
2739 let buffer = self.buffer.read(cx);
2740 self.pending_selection(cx)
2741 .or_else(|| self.selection_set(cx).newest_selection(buffer))
2742 .unwrap()
2743 }
2744
2745 fn selection_set<'a>(&self, cx: &'a AppContext) -> &'a SelectionSet {
2746 self.buffer
2747 .read(cx)
2748 .selection_set(self.selection_set_id)
2749 .unwrap()
2750 }
2751
2752 fn update_selections<T>(
2753 &mut self,
2754 mut selections: Vec<Selection<T>>,
2755 autoscroll: bool,
2756 cx: &mut ViewContext<Self>,
2757 ) where
2758 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
2759 {
2760 // Merge overlapping selections.
2761 let buffer = self.buffer.read(cx);
2762 let mut i = 1;
2763 while i < selections.len() {
2764 if selections[i - 1].end >= selections[i].start {
2765 let removed = selections.remove(i);
2766 if removed.start < selections[i - 1].start {
2767 selections[i - 1].start = removed.start;
2768 }
2769 if removed.end > selections[i - 1].end {
2770 selections[i - 1].end = removed.end;
2771 }
2772 } else {
2773 i += 1;
2774 }
2775 }
2776
2777 self.pending_selection = None;
2778 self.add_selections_state = None;
2779 self.select_larger_syntax_node_stack.clear();
2780 while let Some(autoclose_pair_state) = self.autoclose_stack.last() {
2781 let all_selections_inside_autoclose_ranges =
2782 if selections.len() == autoclose_pair_state.ranges.len() {
2783 selections
2784 .iter()
2785 .zip(autoclose_pair_state.ranges.ranges::<Point, _>(buffer))
2786 .all(|(selection, autoclose_range)| {
2787 let head = selection.head().to_point(&*buffer);
2788 autoclose_range.start <= head && autoclose_range.end >= head
2789 })
2790 } else {
2791 false
2792 };
2793
2794 if all_selections_inside_autoclose_ranges {
2795 break;
2796 } else {
2797 self.autoclose_stack.pop();
2798 }
2799 }
2800
2801 if autoscroll {
2802 self.request_autoscroll(cx);
2803 }
2804 self.pause_cursor_blinking(cx);
2805
2806 self.buffer.update(cx, |buffer, cx| {
2807 buffer
2808 .update_selection_set(self.selection_set_id, &selections, cx)
2809 .unwrap();
2810 });
2811 }
2812
2813 fn request_autoscroll(&mut self, cx: &mut ViewContext<Self>) {
2814 self.autoscroll_requested = true;
2815 cx.notify();
2816 }
2817
2818 fn start_transaction(&mut self, cx: &mut ViewContext<Self>) {
2819 self.end_selection(cx);
2820 self.buffer.update(cx, |buffer, _| {
2821 buffer
2822 .start_transaction(Some(self.selection_set_id))
2823 .unwrap()
2824 });
2825 }
2826
2827 fn end_transaction(&self, cx: &mut ViewContext<Self>) {
2828 self.buffer.update(cx, |buffer, cx| {
2829 buffer
2830 .end_transaction(Some(self.selection_set_id), cx)
2831 .unwrap()
2832 });
2833 }
2834
2835 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
2836 log::info!("Editor::page_up");
2837 }
2838
2839 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
2840 log::info!("Editor::page_down");
2841 }
2842
2843 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
2844 let mut fold_ranges = Vec::new();
2845
2846 let selections = self.selections::<Point>(cx).collect::<Vec<_>>();
2847 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2848 for selection in selections {
2849 let range = selection.display_range(&display_map).sorted();
2850 let buffer_start_row = range.start.to_point(&display_map).row;
2851
2852 for row in (0..=range.end.row()).rev() {
2853 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
2854 let fold_range = self.foldable_range_for_line(&display_map, row);
2855 if fold_range.end.row >= buffer_start_row {
2856 fold_ranges.push(fold_range);
2857 if row <= range.start.row() {
2858 break;
2859 }
2860 }
2861 }
2862 }
2863 }
2864
2865 self.fold_ranges(fold_ranges, cx);
2866 }
2867
2868 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
2869 let selections = self.selections::<Point>(cx).collect::<Vec<_>>();
2870 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2871 let buffer = self.buffer.read(cx);
2872 let ranges = selections
2873 .iter()
2874 .map(|s| {
2875 let range = s.display_range(&display_map).sorted();
2876 let mut start = range.start.to_point(&display_map);
2877 let mut end = range.end.to_point(&display_map);
2878 start.column = 0;
2879 end.column = buffer.line_len(end.row);
2880 start..end
2881 })
2882 .collect::<Vec<_>>();
2883 self.unfold_ranges(ranges, cx);
2884 }
2885
2886 fn is_line_foldable(&self, display_map: &DisplayMapSnapshot, display_row: u32) -> bool {
2887 let max_point = display_map.max_point();
2888 if display_row >= max_point.row() {
2889 false
2890 } else {
2891 let (start_indent, is_blank) = display_map.line_indent(display_row);
2892 if is_blank {
2893 false
2894 } else {
2895 for display_row in display_row + 1..=max_point.row() {
2896 let (indent, is_blank) = display_map.line_indent(display_row);
2897 if !is_blank {
2898 return indent > start_indent;
2899 }
2900 }
2901 false
2902 }
2903 }
2904 }
2905
2906 fn foldable_range_for_line(
2907 &self,
2908 display_map: &DisplayMapSnapshot,
2909 start_row: u32,
2910 ) -> Range<Point> {
2911 let max_point = display_map.max_point();
2912
2913 let (start_indent, _) = display_map.line_indent(start_row);
2914 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
2915 let mut end = None;
2916 for row in start_row + 1..=max_point.row() {
2917 let (indent, is_blank) = display_map.line_indent(row);
2918 if !is_blank && indent <= start_indent {
2919 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
2920 break;
2921 }
2922 }
2923
2924 let end = end.unwrap_or(max_point);
2925 return start.to_point(display_map)..end.to_point(display_map);
2926 }
2927
2928 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
2929 let selections = self.selections::<Point>(cx);
2930 let ranges = selections.map(|s| s.start..s.end).collect();
2931 self.fold_ranges(ranges, cx);
2932 }
2933
2934 fn fold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
2935 if !ranges.is_empty() {
2936 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
2937 self.autoscroll_requested = true;
2938 cx.notify();
2939 }
2940 }
2941
2942 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
2943 if !ranges.is_empty() {
2944 self.display_map
2945 .update(cx, |map, cx| map.unfold(ranges, cx));
2946 self.autoscroll_requested = true;
2947 cx.notify();
2948 }
2949 }
2950
2951 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
2952 self.display_map
2953 .update(cx, |map, cx| map.snapshot(cx))
2954 .longest_row()
2955 }
2956
2957 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
2958 self.display_map
2959 .update(cx, |map, cx| map.snapshot(cx))
2960 .max_point()
2961 }
2962
2963 pub fn text(&self, cx: &AppContext) -> String {
2964 self.buffer.read(cx).text()
2965 }
2966
2967 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
2968 self.display_map
2969 .update(cx, |map, cx| map.snapshot(cx))
2970 .text()
2971 }
2972
2973 // pub fn font_size(&self) -> f32 {
2974 // self.settings.font_size
2975 // }
2976
2977 pub fn set_wrap_width(&self, width: f32, cx: &mut MutableAppContext) -> bool {
2978 self.display_map
2979 .update(cx, |map, cx| map.set_wrap_width(Some(width), cx))
2980 }
2981
2982 fn next_blink_epoch(&mut self) -> usize {
2983 self.blink_epoch += 1;
2984 self.blink_epoch
2985 }
2986
2987 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
2988 self.show_local_cursors = true;
2989 cx.notify();
2990
2991 let epoch = self.next_blink_epoch();
2992 cx.spawn(|this, mut cx| {
2993 let this = this.downgrade();
2994 async move {
2995 Timer::after(CURSOR_BLINK_INTERVAL).await;
2996 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
2997 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
2998 }
2999 }
3000 })
3001 .detach();
3002 }
3003
3004 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
3005 if epoch == self.blink_epoch {
3006 self.blinking_paused = false;
3007 self.blink_cursors(epoch, cx);
3008 }
3009 }
3010
3011 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
3012 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
3013 self.show_local_cursors = !self.show_local_cursors;
3014 cx.notify();
3015
3016 let epoch = self.next_blink_epoch();
3017 cx.spawn(|this, mut cx| {
3018 let this = this.downgrade();
3019 async move {
3020 Timer::after(CURSOR_BLINK_INTERVAL).await;
3021 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
3022 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
3023 }
3024 }
3025 })
3026 .detach();
3027 }
3028 }
3029
3030 pub fn show_local_cursors(&self) -> bool {
3031 self.show_local_cursors
3032 }
3033
3034 fn on_buffer_changed(&mut self, _: ModelHandle<Buffer>, cx: &mut ViewContext<Self>) {
3035 self.refresh_active_diagnostics(cx);
3036 cx.notify();
3037 }
3038
3039 fn on_buffer_event(
3040 &mut self,
3041 _: ModelHandle<Buffer>,
3042 event: &language::Event,
3043 cx: &mut ViewContext<Self>,
3044 ) {
3045 match event {
3046 language::Event::Edited => cx.emit(Event::Edited),
3047 language::Event::Dirtied => cx.emit(Event::Dirtied),
3048 language::Event::Saved => cx.emit(Event::Saved),
3049 language::Event::FileHandleChanged => cx.emit(Event::FileHandleChanged),
3050 language::Event::Reloaded => cx.emit(Event::FileHandleChanged),
3051 language::Event::Closed => cx.emit(Event::Closed),
3052 language::Event::Reparsed => {}
3053 }
3054 }
3055
3056 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
3057 cx.notify();
3058 }
3059}
3060
3061impl Snapshot {
3062 pub fn is_empty(&self) -> bool {
3063 self.display_snapshot.is_empty()
3064 }
3065
3066 pub fn is_focused(&self) -> bool {
3067 self.is_focused
3068 }
3069
3070 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
3071 self.placeholder_text.as_ref()
3072 }
3073
3074 pub fn buffer_row_count(&self) -> u32 {
3075 self.display_snapshot.buffer_row_count()
3076 }
3077
3078 pub fn buffer_rows<'a>(&'a self, start_row: u32, cx: &'a AppContext) -> BufferRows<'a> {
3079 self.display_snapshot.buffer_rows(start_row, Some(cx))
3080 }
3081
3082 pub fn chunks<'a>(
3083 &'a self,
3084 display_rows: Range<u32>,
3085 theme: Option<&'a SyntaxTheme>,
3086 cx: &'a AppContext,
3087 ) -> display_map::Chunks<'a> {
3088 self.display_snapshot.chunks(display_rows, theme, cx)
3089 }
3090
3091 pub fn scroll_position(&self) -> Vector2F {
3092 compute_scroll_position(
3093 &self.display_snapshot,
3094 self.scroll_position,
3095 &self.scroll_top_anchor,
3096 )
3097 }
3098
3099 pub fn max_point(&self) -> DisplayPoint {
3100 self.display_snapshot.max_point()
3101 }
3102
3103 pub fn longest_row(&self) -> u32 {
3104 self.display_snapshot.longest_row()
3105 }
3106
3107 pub fn line_len(&self, display_row: u32) -> u32 {
3108 self.display_snapshot.line_len(display_row)
3109 }
3110
3111 pub fn line(&self, display_row: u32) -> String {
3112 self.display_snapshot.line(display_row)
3113 }
3114
3115 pub fn prev_row_boundary(&self, point: DisplayPoint) -> (DisplayPoint, Point) {
3116 self.display_snapshot.prev_row_boundary(point)
3117 }
3118
3119 pub fn next_row_boundary(&self, point: DisplayPoint) -> (DisplayPoint, Point) {
3120 self.display_snapshot.next_row_boundary(point)
3121 }
3122}
3123
3124impl EditorSettings {
3125 #[cfg(any(test, feature = "test-support"))]
3126 pub fn test(cx: &AppContext) -> Self {
3127 Self {
3128 tab_size: 4,
3129 style: {
3130 let font_cache: &gpui::FontCache = cx.font_cache();
3131 let font_family_name = Arc::from("Monaco");
3132 let font_properties = Default::default();
3133 let font_family_id = font_cache.load_family(&[&font_family_name]).unwrap();
3134 let font_id = font_cache
3135 .select_font(font_family_id, &font_properties)
3136 .unwrap();
3137 EditorStyle {
3138 text: gpui::fonts::TextStyle {
3139 font_family_name,
3140 font_family_id,
3141 font_id,
3142 font_size: 14.,
3143 color: gpui::color::Color::from_u32(0xff0000ff),
3144 font_properties,
3145 underline: None,
3146 },
3147 placeholder_text: None,
3148 background: Default::default(),
3149 gutter_background: Default::default(),
3150 active_line_background: Default::default(),
3151 line_number: Default::default(),
3152 line_number_active: Default::default(),
3153 selection: Default::default(),
3154 guest_selections: Default::default(),
3155 syntax: Default::default(),
3156 error_diagnostic: Default::default(),
3157 invalid_error_diagnostic: Default::default(),
3158 warning_diagnostic: Default::default(),
3159 invalid_warning_diagnostic: Default::default(),
3160 information_diagnostic: Default::default(),
3161 invalid_information_diagnostic: Default::default(),
3162 hint_diagnostic: Default::default(),
3163 invalid_hint_diagnostic: Default::default(),
3164 }
3165 },
3166 }
3167 }
3168}
3169
3170fn compute_scroll_position(
3171 snapshot: &DisplayMapSnapshot,
3172 mut scroll_position: Vector2F,
3173 scroll_top_anchor: &Anchor,
3174) -> Vector2F {
3175 let scroll_top = scroll_top_anchor.to_display_point(snapshot).row() as f32;
3176 scroll_position.set_y(scroll_top + scroll_position.y());
3177 scroll_position
3178}
3179
3180pub enum Event {
3181 Activate,
3182 Edited,
3183 Blurred,
3184 Dirtied,
3185 Saved,
3186 FileHandleChanged,
3187 Closed,
3188}
3189
3190impl Entity for Editor {
3191 type Event = Event;
3192
3193 fn release(&mut self, cx: &mut MutableAppContext) {
3194 self.buffer.update(cx, |buffer, cx| {
3195 buffer
3196 .remove_selection_set(self.selection_set_id, cx)
3197 .unwrap();
3198 });
3199 }
3200}
3201
3202impl View for Editor {
3203 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
3204 let settings = self.build_settings.borrow_mut()(cx);
3205 self.display_map.update(cx, |map, cx| {
3206 map.set_font(
3207 settings.style.text.font_id,
3208 settings.style.text.font_size,
3209 cx,
3210 )
3211 });
3212 EditorElement::new(self.handle.clone(), settings).boxed()
3213 }
3214
3215 fn ui_name() -> &'static str {
3216 "Editor"
3217 }
3218
3219 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
3220 self.focused = true;
3221 self.blink_cursors(self.blink_epoch, cx);
3222 self.buffer.update(cx, |buffer, cx| {
3223 buffer
3224 .set_active_selection_set(Some(self.selection_set_id), cx)
3225 .unwrap();
3226 });
3227 }
3228
3229 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
3230 self.focused = false;
3231 self.show_local_cursors = false;
3232 self.buffer.update(cx, |buffer, cx| {
3233 buffer.set_active_selection_set(None, cx).unwrap();
3234 });
3235 cx.emit(Event::Blurred);
3236 cx.notify();
3237 }
3238
3239 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
3240 let mut cx = Self::default_keymap_context();
3241 let mode = match self.mode {
3242 EditorMode::SingleLine => "single_line",
3243 EditorMode::AutoHeight { .. } => "auto_height",
3244 EditorMode::Full => "full",
3245 };
3246 cx.map.insert("mode".into(), mode.into());
3247 cx
3248 }
3249}
3250
3251impl SelectionExt for Selection<Point> {
3252 fn display_range(&self, map: &DisplayMapSnapshot) -> Range<DisplayPoint> {
3253 let start = self.start.to_display_point(map);
3254 let end = self.end.to_display_point(map);
3255 if self.reversed {
3256 end..start
3257 } else {
3258 start..end
3259 }
3260 }
3261
3262 fn spanned_rows(
3263 &self,
3264 include_end_if_at_line_start: bool,
3265 map: &DisplayMapSnapshot,
3266 ) -> SpannedRows {
3267 let display_start = self.start.to_display_point(map);
3268 let mut display_end = self.end.to_display_point(map);
3269 if !include_end_if_at_line_start
3270 && display_end.row() != map.max_point().row()
3271 && display_start.row() != display_end.row()
3272 && display_end.column() == 0
3273 {
3274 *display_end.row_mut() -= 1;
3275 }
3276
3277 let (display_start, buffer_start) = map.prev_row_boundary(display_start);
3278 let (display_end, buffer_end) = map.next_row_boundary(display_end);
3279
3280 SpannedRows {
3281 buffer_rows: buffer_start.row..buffer_end.row + 1,
3282 display_rows: display_start.row()..display_end.row() + 1,
3283 }
3284 }
3285}
3286
3287pub fn diagnostic_style(
3288 severity: DiagnosticSeverity,
3289 valid: bool,
3290 style: &EditorStyle,
3291) -> DiagnosticStyle {
3292 match (severity, valid) {
3293 (DiagnosticSeverity::ERROR, true) => style.error_diagnostic,
3294 (DiagnosticSeverity::ERROR, false) => style.invalid_error_diagnostic,
3295 (DiagnosticSeverity::WARNING, true) => style.warning_diagnostic,
3296 (DiagnosticSeverity::WARNING, false) => style.invalid_warning_diagnostic,
3297 (DiagnosticSeverity::INFORMATION, true) => style.information_diagnostic,
3298 (DiagnosticSeverity::INFORMATION, false) => style.invalid_information_diagnostic,
3299 (DiagnosticSeverity::HINT, true) => style.hint_diagnostic,
3300 (DiagnosticSeverity::HINT, false) => style.invalid_hint_diagnostic,
3301 _ => Default::default(),
3302 }
3303}
3304
3305#[cfg(test)]
3306mod tests {
3307 use super::*;
3308 use crate::test::sample_text;
3309 use buffer::Point;
3310 use unindent::Unindent;
3311
3312 #[gpui::test]
3313 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
3314 let buffer = cx.add_model(|cx| Buffer::new(0, "aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx));
3315 let settings = EditorSettings::test(cx);
3316 let (_, editor) =
3317 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3318
3319 editor.update(cx, |view, cx| {
3320 view.begin_selection(DisplayPoint::new(2, 2), false, cx);
3321 });
3322
3323 assert_eq!(
3324 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3325 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
3326 );
3327
3328 editor.update(cx, |view, cx| {
3329 view.update_selection(DisplayPoint::new(3, 3), Vector2F::zero(), cx);
3330 });
3331
3332 assert_eq!(
3333 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3334 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
3335 );
3336
3337 editor.update(cx, |view, cx| {
3338 view.update_selection(DisplayPoint::new(1, 1), Vector2F::zero(), cx);
3339 });
3340
3341 assert_eq!(
3342 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3343 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
3344 );
3345
3346 editor.update(cx, |view, cx| {
3347 view.end_selection(cx);
3348 view.update_selection(DisplayPoint::new(3, 3), Vector2F::zero(), cx);
3349 });
3350
3351 assert_eq!(
3352 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3353 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
3354 );
3355
3356 editor.update(cx, |view, cx| {
3357 view.begin_selection(DisplayPoint::new(3, 3), true, cx);
3358 view.update_selection(DisplayPoint::new(0, 0), Vector2F::zero(), cx);
3359 });
3360
3361 assert_eq!(
3362 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3363 [
3364 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
3365 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
3366 ]
3367 );
3368
3369 editor.update(cx, |view, cx| {
3370 view.end_selection(cx);
3371 });
3372
3373 assert_eq!(
3374 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3375 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
3376 );
3377 }
3378
3379 #[gpui::test]
3380 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
3381 let buffer = cx.add_model(|cx| Buffer::new(0, "aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx));
3382 let settings = EditorSettings::test(cx);
3383 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3384
3385 view.update(cx, |view, cx| {
3386 view.begin_selection(DisplayPoint::new(2, 2), false, cx);
3387 assert_eq!(
3388 view.selection_ranges(cx),
3389 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
3390 );
3391 });
3392
3393 view.update(cx, |view, cx| {
3394 view.update_selection(DisplayPoint::new(3, 3), Vector2F::zero(), cx);
3395 assert_eq!(
3396 view.selection_ranges(cx),
3397 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
3398 );
3399 });
3400
3401 view.update(cx, |view, cx| {
3402 view.cancel(&Cancel, cx);
3403 view.update_selection(DisplayPoint::new(1, 1), Vector2F::zero(), cx);
3404 assert_eq!(
3405 view.selection_ranges(cx),
3406 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
3407 );
3408 });
3409 }
3410
3411 #[gpui::test]
3412 fn test_cancel(cx: &mut gpui::MutableAppContext) {
3413 let buffer = cx.add_model(|cx| Buffer::new(0, "aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx));
3414 let settings = EditorSettings::test(cx);
3415 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3416
3417 view.update(cx, |view, cx| {
3418 view.begin_selection(DisplayPoint::new(3, 4), false, cx);
3419 view.update_selection(DisplayPoint::new(1, 1), Vector2F::zero(), cx);
3420 view.end_selection(cx);
3421
3422 view.begin_selection(DisplayPoint::new(0, 1), true, cx);
3423 view.update_selection(DisplayPoint::new(0, 3), Vector2F::zero(), cx);
3424 view.end_selection(cx);
3425 assert_eq!(
3426 view.selection_ranges(cx),
3427 [
3428 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
3429 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
3430 ]
3431 );
3432 });
3433
3434 view.update(cx, |view, cx| {
3435 view.cancel(&Cancel, cx);
3436 assert_eq!(
3437 view.selection_ranges(cx),
3438 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
3439 );
3440 });
3441
3442 view.update(cx, |view, cx| {
3443 view.cancel(&Cancel, cx);
3444 assert_eq!(
3445 view.selection_ranges(cx),
3446 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
3447 );
3448 });
3449 }
3450
3451 #[gpui::test]
3452 fn test_fold(cx: &mut gpui::MutableAppContext) {
3453 let buffer = cx.add_model(|cx| {
3454 Buffer::new(
3455 0,
3456 "
3457 impl Foo {
3458 // Hello!
3459
3460 fn a() {
3461 1
3462 }
3463
3464 fn b() {
3465 2
3466 }
3467
3468 fn c() {
3469 3
3470 }
3471 }
3472 "
3473 .unindent(),
3474 cx,
3475 )
3476 });
3477 let settings = EditorSettings::test(&cx);
3478 let (_, view) = cx.add_window(Default::default(), |cx| {
3479 build_editor(buffer.clone(), settings, cx)
3480 });
3481
3482 view.update(cx, |view, cx| {
3483 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx)
3484 .unwrap();
3485 view.fold(&Fold, cx);
3486 assert_eq!(
3487 view.display_text(cx),
3488 "
3489 impl Foo {
3490 // Hello!
3491
3492 fn a() {
3493 1
3494 }
3495
3496 fn b() {…
3497 }
3498
3499 fn c() {…
3500 }
3501 }
3502 "
3503 .unindent(),
3504 );
3505
3506 view.fold(&Fold, cx);
3507 assert_eq!(
3508 view.display_text(cx),
3509 "
3510 impl Foo {…
3511 }
3512 "
3513 .unindent(),
3514 );
3515
3516 view.unfold(&Unfold, cx);
3517 assert_eq!(
3518 view.display_text(cx),
3519 "
3520 impl Foo {
3521 // Hello!
3522
3523 fn a() {
3524 1
3525 }
3526
3527 fn b() {…
3528 }
3529
3530 fn c() {…
3531 }
3532 }
3533 "
3534 .unindent(),
3535 );
3536
3537 view.unfold(&Unfold, cx);
3538 assert_eq!(view.display_text(cx), buffer.read(cx).text());
3539 });
3540 }
3541
3542 #[gpui::test]
3543 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
3544 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(6, 6), cx));
3545 let settings = EditorSettings::test(&cx);
3546 let (_, view) = cx.add_window(Default::default(), |cx| {
3547 build_editor(buffer.clone(), settings, cx)
3548 });
3549
3550 buffer.update(cx, |buffer, cx| {
3551 buffer.edit(
3552 vec![
3553 Point::new(1, 0)..Point::new(1, 0),
3554 Point::new(1, 1)..Point::new(1, 1),
3555 ],
3556 "\t",
3557 cx,
3558 );
3559 });
3560
3561 view.update(cx, |view, cx| {
3562 assert_eq!(
3563 view.selection_ranges(cx),
3564 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
3565 );
3566
3567 view.move_down(&MoveDown, cx);
3568 assert_eq!(
3569 view.selection_ranges(cx),
3570 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
3571 );
3572
3573 view.move_right(&MoveRight, cx);
3574 assert_eq!(
3575 view.selection_ranges(cx),
3576 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
3577 );
3578
3579 view.move_left(&MoveLeft, cx);
3580 assert_eq!(
3581 view.selection_ranges(cx),
3582 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
3583 );
3584
3585 view.move_up(&MoveUp, cx);
3586 assert_eq!(
3587 view.selection_ranges(cx),
3588 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
3589 );
3590
3591 view.move_to_end(&MoveToEnd, cx);
3592 assert_eq!(
3593 view.selection_ranges(cx),
3594 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
3595 );
3596
3597 view.move_to_beginning(&MoveToBeginning, cx);
3598 assert_eq!(
3599 view.selection_ranges(cx),
3600 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
3601 );
3602
3603 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx)
3604 .unwrap();
3605 view.select_to_beginning(&SelectToBeginning, cx);
3606 assert_eq!(
3607 view.selection_ranges(cx),
3608 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
3609 );
3610
3611 view.select_to_end(&SelectToEnd, cx);
3612 assert_eq!(
3613 view.selection_ranges(cx),
3614 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
3615 );
3616 });
3617 }
3618
3619 #[gpui::test]
3620 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
3621 let buffer = cx.add_model(|cx| Buffer::new(0, "ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx));
3622 let settings = EditorSettings::test(&cx);
3623 let (_, view) = cx.add_window(Default::default(), |cx| {
3624 build_editor(buffer.clone(), settings, cx)
3625 });
3626
3627 assert_eq!('ⓐ'.len_utf8(), 3);
3628 assert_eq!('α'.len_utf8(), 2);
3629
3630 view.update(cx, |view, cx| {
3631 view.fold_ranges(
3632 vec![
3633 Point::new(0, 6)..Point::new(0, 12),
3634 Point::new(1, 2)..Point::new(1, 4),
3635 Point::new(2, 4)..Point::new(2, 8),
3636 ],
3637 cx,
3638 );
3639 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
3640
3641 view.move_right(&MoveRight, cx);
3642 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐ".len())]);
3643 view.move_right(&MoveRight, cx);
3644 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ".len())]);
3645 view.move_right(&MoveRight, cx);
3646 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ…".len())]);
3647
3648 view.move_down(&MoveDown, cx);
3649 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "ab…".len())]);
3650 view.move_left(&MoveLeft, cx);
3651 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "ab".len())]);
3652 view.move_left(&MoveLeft, cx);
3653 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "a".len())]);
3654
3655 view.move_down(&MoveDown, cx);
3656 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "α".len())]);
3657 view.move_right(&MoveRight, cx);
3658 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβ".len())]);
3659 view.move_right(&MoveRight, cx);
3660 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβ…".len())]);
3661 view.move_right(&MoveRight, cx);
3662 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβ…ε".len())]);
3663
3664 view.move_up(&MoveUp, cx);
3665 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "ab…e".len())]);
3666 view.move_up(&MoveUp, cx);
3667 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ…ⓔ".len())]);
3668 view.move_left(&MoveLeft, cx);
3669 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ…".len())]);
3670 view.move_left(&MoveLeft, cx);
3671 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ".len())]);
3672 view.move_left(&MoveLeft, cx);
3673 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐ".len())]);
3674 });
3675 }
3676
3677 #[gpui::test]
3678 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
3679 let buffer = cx.add_model(|cx| Buffer::new(0, "ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx));
3680 let settings = EditorSettings::test(&cx);
3681 let (_, view) = cx.add_window(Default::default(), |cx| {
3682 build_editor(buffer.clone(), settings, cx)
3683 });
3684 view.update(cx, |view, cx| {
3685 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx)
3686 .unwrap();
3687
3688 view.move_down(&MoveDown, cx);
3689 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "abcd".len())]);
3690
3691 view.move_down(&MoveDown, cx);
3692 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβγ".len())]);
3693
3694 view.move_down(&MoveDown, cx);
3695 assert_eq!(view.selection_ranges(cx), &[empty_range(3, "abcd".len())]);
3696
3697 view.move_down(&MoveDown, cx);
3698 assert_eq!(view.selection_ranges(cx), &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]);
3699
3700 view.move_up(&MoveUp, cx);
3701 assert_eq!(view.selection_ranges(cx), &[empty_range(3, "abcd".len())]);
3702
3703 view.move_up(&MoveUp, cx);
3704 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβγ".len())]);
3705 });
3706 }
3707
3708 #[gpui::test]
3709 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
3710 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\n def", cx));
3711 let settings = EditorSettings::test(&cx);
3712 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3713 view.update(cx, |view, cx| {
3714 view.select_display_ranges(
3715 &[
3716 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
3717 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
3718 ],
3719 cx,
3720 )
3721 .unwrap();
3722 });
3723
3724 view.update(cx, |view, cx| {
3725 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
3726 assert_eq!(
3727 view.selection_ranges(cx),
3728 &[
3729 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
3730 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
3731 ]
3732 );
3733 });
3734
3735 view.update(cx, |view, cx| {
3736 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
3737 assert_eq!(
3738 view.selection_ranges(cx),
3739 &[
3740 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
3741 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
3742 ]
3743 );
3744 });
3745
3746 view.update(cx, |view, cx| {
3747 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
3748 assert_eq!(
3749 view.selection_ranges(cx),
3750 &[
3751 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
3752 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
3753 ]
3754 );
3755 });
3756
3757 view.update(cx, |view, cx| {
3758 view.move_to_end_of_line(&MoveToEndOfLine, cx);
3759 assert_eq!(
3760 view.selection_ranges(cx),
3761 &[
3762 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
3763 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
3764 ]
3765 );
3766 });
3767
3768 // Moving to the end of line again is a no-op.
3769 view.update(cx, |view, cx| {
3770 view.move_to_end_of_line(&MoveToEndOfLine, cx);
3771 assert_eq!(
3772 view.selection_ranges(cx),
3773 &[
3774 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
3775 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
3776 ]
3777 );
3778 });
3779
3780 view.update(cx, |view, cx| {
3781 view.move_left(&MoveLeft, cx);
3782 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
3783 assert_eq!(
3784 view.selection_ranges(cx),
3785 &[
3786 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
3787 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
3788 ]
3789 );
3790 });
3791
3792 view.update(cx, |view, cx| {
3793 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
3794 assert_eq!(
3795 view.selection_ranges(cx),
3796 &[
3797 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
3798 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
3799 ]
3800 );
3801 });
3802
3803 view.update(cx, |view, cx| {
3804 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
3805 assert_eq!(
3806 view.selection_ranges(cx),
3807 &[
3808 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
3809 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
3810 ]
3811 );
3812 });
3813
3814 view.update(cx, |view, cx| {
3815 view.select_to_end_of_line(&SelectToEndOfLine, cx);
3816 assert_eq!(
3817 view.selection_ranges(cx),
3818 &[
3819 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
3820 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
3821 ]
3822 );
3823 });
3824
3825 view.update(cx, |view, cx| {
3826 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
3827 assert_eq!(view.display_text(cx), "ab\n de");
3828 assert_eq!(
3829 view.selection_ranges(cx),
3830 &[
3831 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
3832 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
3833 ]
3834 );
3835 });
3836
3837 view.update(cx, |view, cx| {
3838 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
3839 assert_eq!(view.display_text(cx), "\n");
3840 assert_eq!(
3841 view.selection_ranges(cx),
3842 &[
3843 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
3844 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
3845 ]
3846 );
3847 });
3848 }
3849
3850 #[gpui::test]
3851 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
3852 let buffer =
3853 cx.add_model(|cx| Buffer::new(0, "use std::str::{foo, bar}\n\n {baz.qux()}", cx));
3854 let settings = EditorSettings::test(&cx);
3855 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3856 view.update(cx, |view, cx| {
3857 view.select_display_ranges(
3858 &[
3859 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
3860 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
3861 ],
3862 cx,
3863 )
3864 .unwrap();
3865 });
3866
3867 view.update(cx, |view, cx| {
3868 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
3869 assert_eq!(
3870 view.selection_ranges(cx),
3871 &[
3872 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
3873 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
3874 ]
3875 );
3876 });
3877
3878 view.update(cx, |view, cx| {
3879 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
3880 assert_eq!(
3881 view.selection_ranges(cx),
3882 &[
3883 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
3884 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2),
3885 ]
3886 );
3887 });
3888
3889 view.update(cx, |view, cx| {
3890 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
3891 assert_eq!(
3892 view.selection_ranges(cx),
3893 &[
3894 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
3895 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
3896 ]
3897 );
3898 });
3899
3900 view.update(cx, |view, cx| {
3901 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
3902 assert_eq!(
3903 view.selection_ranges(cx),
3904 &[
3905 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
3906 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
3907 ]
3908 );
3909 });
3910
3911 view.update(cx, |view, cx| {
3912 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
3913 assert_eq!(
3914 view.selection_ranges(cx),
3915 &[
3916 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
3917 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 23),
3918 ]
3919 );
3920 });
3921
3922 view.update(cx, |view, cx| {
3923 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
3924 assert_eq!(
3925 view.selection_ranges(cx),
3926 &[
3927 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
3928 DisplayPoint::new(0, 24)..DisplayPoint::new(0, 24),
3929 ]
3930 );
3931 });
3932
3933 view.update(cx, |view, cx| {
3934 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
3935 assert_eq!(
3936 view.selection_ranges(cx),
3937 &[
3938 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
3939 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
3940 ]
3941 );
3942 });
3943
3944 view.update(cx, |view, cx| {
3945 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
3946 assert_eq!(
3947 view.selection_ranges(cx),
3948 &[
3949 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
3950 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
3951 ]
3952 );
3953 });
3954
3955 view.update(cx, |view, cx| {
3956 view.move_right(&MoveRight, cx);
3957 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
3958 assert_eq!(
3959 view.selection_ranges(cx),
3960 &[
3961 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
3962 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
3963 ]
3964 );
3965 });
3966
3967 view.update(cx, |view, cx| {
3968 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
3969 assert_eq!(
3970 view.selection_ranges(cx),
3971 &[
3972 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 7),
3973 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 2),
3974 ]
3975 );
3976 });
3977
3978 view.update(cx, |view, cx| {
3979 view.select_to_next_word_boundary(&SelectToNextWordBoundary, cx);
3980 assert_eq!(
3981 view.selection_ranges(cx),
3982 &[
3983 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
3984 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
3985 ]
3986 );
3987 });
3988 }
3989
3990 #[gpui::test]
3991 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
3992 let buffer =
3993 cx.add_model(|cx| Buffer::new(0, "use one::{\n two::three::four::five\n};", cx));
3994 let settings = EditorSettings::test(&cx);
3995 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3996
3997 view.update(cx, |view, cx| {
3998 view.set_wrap_width(140., cx);
3999 assert_eq!(
4000 view.display_text(cx),
4001 "use one::{\n two::three::\n four::five\n};"
4002 );
4003
4004 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx)
4005 .unwrap();
4006
4007 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4008 assert_eq!(
4009 view.selection_ranges(cx),
4010 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
4011 );
4012
4013 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4014 assert_eq!(
4015 view.selection_ranges(cx),
4016 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
4017 );
4018
4019 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4020 assert_eq!(
4021 view.selection_ranges(cx),
4022 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
4023 );
4024
4025 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4026 assert_eq!(
4027 view.selection_ranges(cx),
4028 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
4029 );
4030
4031 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4032 assert_eq!(
4033 view.selection_ranges(cx),
4034 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
4035 );
4036
4037 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4038 assert_eq!(
4039 view.selection_ranges(cx),
4040 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
4041 );
4042 });
4043 }
4044
4045 #[gpui::test]
4046 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
4047 let buffer = cx.add_model(|cx| Buffer::new(0, "one two three four", cx));
4048 let settings = EditorSettings::test(&cx);
4049 let (_, view) = cx.add_window(Default::default(), |cx| {
4050 build_editor(buffer.clone(), settings, cx)
4051 });
4052
4053 view.update(cx, |view, cx| {
4054 view.select_display_ranges(
4055 &[
4056 // an empty selection - the preceding word fragment is deleted
4057 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4058 // characters selected - they are deleted
4059 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
4060 ],
4061 cx,
4062 )
4063 .unwrap();
4064 view.delete_to_previous_word_boundary(&DeleteToPreviousWordBoundary, cx);
4065 });
4066
4067 assert_eq!(buffer.read(cx).text(), "e two te four");
4068
4069 view.update(cx, |view, cx| {
4070 view.select_display_ranges(
4071 &[
4072 // an empty selection - the following word fragment is deleted
4073 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4074 // characters selected - they are deleted
4075 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
4076 ],
4077 cx,
4078 )
4079 .unwrap();
4080 view.delete_to_next_word_boundary(&DeleteToNextWordBoundary, cx);
4081 });
4082
4083 assert_eq!(buffer.read(cx).text(), "e t te our");
4084 }
4085
4086 #[gpui::test]
4087 fn test_newline(cx: &mut gpui::MutableAppContext) {
4088 let buffer = cx.add_model(|cx| Buffer::new(0, "aaaa\n bbbb\n", cx));
4089 let settings = EditorSettings::test(&cx);
4090 let (_, view) = cx.add_window(Default::default(), |cx| {
4091 build_editor(buffer.clone(), settings, cx)
4092 });
4093
4094 view.update(cx, |view, cx| {
4095 view.select_display_ranges(
4096 &[
4097 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4098 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
4099 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
4100 ],
4101 cx,
4102 )
4103 .unwrap();
4104
4105 view.newline(&Newline, cx);
4106 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
4107 });
4108 }
4109
4110 #[gpui::test]
4111 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
4112 let buffer = cx.add_model(|cx| Buffer::new(0, " one two\nthree\n four", cx));
4113 let settings = EditorSettings::test(&cx);
4114 let (_, view) = cx.add_window(Default::default(), |cx| {
4115 build_editor(buffer.clone(), settings, cx)
4116 });
4117
4118 view.update(cx, |view, cx| {
4119 // two selections on the same line
4120 view.select_display_ranges(
4121 &[
4122 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
4123 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
4124 ],
4125 cx,
4126 )
4127 .unwrap();
4128
4129 // indent from mid-tabstop to full tabstop
4130 view.tab(&Tab, cx);
4131 assert_eq!(view.text(cx), " one two\nthree\n four");
4132 assert_eq!(
4133 view.selection_ranges(cx),
4134 &[
4135 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
4136 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
4137 ]
4138 );
4139
4140 // outdent from 1 tabstop to 0 tabstops
4141 view.outdent(&Outdent, cx);
4142 assert_eq!(view.text(cx), "one two\nthree\n four");
4143 assert_eq!(
4144 view.selection_ranges(cx),
4145 &[
4146 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
4147 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
4148 ]
4149 );
4150
4151 // select across line ending
4152 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx)
4153 .unwrap();
4154
4155 // indent and outdent affect only the preceding line
4156 view.tab(&Tab, cx);
4157 assert_eq!(view.text(cx), "one two\n three\n four");
4158 assert_eq!(
4159 view.selection_ranges(cx),
4160 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
4161 );
4162 view.outdent(&Outdent, cx);
4163 assert_eq!(view.text(cx), "one two\nthree\n four");
4164 assert_eq!(
4165 view.selection_ranges(cx),
4166 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
4167 );
4168 });
4169 }
4170
4171 #[gpui::test]
4172 fn test_backspace(cx: &mut gpui::MutableAppContext) {
4173 let buffer = cx.add_model(|cx| {
4174 Buffer::new(
4175 0,
4176 "one two three\nfour five six\nseven eight nine\nten\n",
4177 cx,
4178 )
4179 });
4180 let settings = EditorSettings::test(&cx);
4181 let (_, view) = cx.add_window(Default::default(), |cx| {
4182 build_editor(buffer.clone(), settings, cx)
4183 });
4184
4185 view.update(cx, |view, cx| {
4186 view.select_display_ranges(
4187 &[
4188 // an empty selection - the preceding character is deleted
4189 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4190 // one character selected - it is deleted
4191 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
4192 // a line suffix selected - it is deleted
4193 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
4194 ],
4195 cx,
4196 )
4197 .unwrap();
4198 view.backspace(&Backspace, cx);
4199 });
4200
4201 assert_eq!(
4202 buffer.read(cx).text(),
4203 "oe two three\nfou five six\nseven ten\n"
4204 );
4205 }
4206
4207 #[gpui::test]
4208 fn test_delete(cx: &mut gpui::MutableAppContext) {
4209 let buffer = cx.add_model(|cx| {
4210 Buffer::new(
4211 0,
4212 "one two three\nfour five six\nseven eight nine\nten\n",
4213 cx,
4214 )
4215 });
4216 let settings = EditorSettings::test(&cx);
4217 let (_, view) = cx.add_window(Default::default(), |cx| {
4218 build_editor(buffer.clone(), settings, cx)
4219 });
4220
4221 view.update(cx, |view, cx| {
4222 view.select_display_ranges(
4223 &[
4224 // an empty selection - the following character is deleted
4225 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4226 // one character selected - it is deleted
4227 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
4228 // a line suffix selected - it is deleted
4229 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
4230 ],
4231 cx,
4232 )
4233 .unwrap();
4234 view.delete(&Delete, cx);
4235 });
4236
4237 assert_eq!(
4238 buffer.read(cx).text(),
4239 "on two three\nfou five six\nseven ten\n"
4240 );
4241 }
4242
4243 #[gpui::test]
4244 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
4245 let settings = EditorSettings::test(&cx);
4246 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\ndef\nghi\n", cx));
4247 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4248 view.update(cx, |view, cx| {
4249 view.select_display_ranges(
4250 &[
4251 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4252 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
4253 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
4254 ],
4255 cx,
4256 )
4257 .unwrap();
4258 view.delete_line(&DeleteLine, cx);
4259 assert_eq!(view.display_text(cx), "ghi");
4260 assert_eq!(
4261 view.selection_ranges(cx),
4262 vec![
4263 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4264 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
4265 ]
4266 );
4267 });
4268
4269 let settings = EditorSettings::test(&cx);
4270 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\ndef\nghi\n", cx));
4271 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4272 view.update(cx, |view, cx| {
4273 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx)
4274 .unwrap();
4275 view.delete_line(&DeleteLine, cx);
4276 assert_eq!(view.display_text(cx), "ghi\n");
4277 assert_eq!(
4278 view.selection_ranges(cx),
4279 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
4280 );
4281 });
4282 }
4283
4284 #[gpui::test]
4285 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
4286 let settings = EditorSettings::test(&cx);
4287 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\ndef\nghi\n", cx));
4288 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4289 view.update(cx, |view, cx| {
4290 view.select_display_ranges(
4291 &[
4292 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
4293 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4294 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4295 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
4296 ],
4297 cx,
4298 )
4299 .unwrap();
4300 view.duplicate_line(&DuplicateLine, cx);
4301 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
4302 assert_eq!(
4303 view.selection_ranges(cx),
4304 vec![
4305 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
4306 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
4307 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
4308 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
4309 ]
4310 );
4311 });
4312
4313 let settings = EditorSettings::test(&cx);
4314 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\ndef\nghi\n", cx));
4315 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4316 view.update(cx, |view, cx| {
4317 view.select_display_ranges(
4318 &[
4319 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
4320 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
4321 ],
4322 cx,
4323 )
4324 .unwrap();
4325 view.duplicate_line(&DuplicateLine, cx);
4326 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
4327 assert_eq!(
4328 view.selection_ranges(cx),
4329 vec![
4330 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
4331 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
4332 ]
4333 );
4334 });
4335 }
4336
4337 #[gpui::test]
4338 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
4339 let settings = EditorSettings::test(&cx);
4340 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(10, 5), cx));
4341 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4342 view.update(cx, |view, cx| {
4343 view.fold_ranges(
4344 vec![
4345 Point::new(0, 2)..Point::new(1, 2),
4346 Point::new(2, 3)..Point::new(4, 1),
4347 Point::new(7, 0)..Point::new(8, 4),
4348 ],
4349 cx,
4350 );
4351 view.select_display_ranges(
4352 &[
4353 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4354 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
4355 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
4356 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
4357 ],
4358 cx,
4359 )
4360 .unwrap();
4361 assert_eq!(
4362 view.display_text(cx),
4363 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
4364 );
4365
4366 view.move_line_up(&MoveLineUp, cx);
4367 assert_eq!(
4368 view.display_text(cx),
4369 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
4370 );
4371 assert_eq!(
4372 view.selection_ranges(cx),
4373 vec![
4374 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4375 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4376 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
4377 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
4378 ]
4379 );
4380 });
4381
4382 view.update(cx, |view, cx| {
4383 view.move_line_down(&MoveLineDown, cx);
4384 assert_eq!(
4385 view.display_text(cx),
4386 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
4387 );
4388 assert_eq!(
4389 view.selection_ranges(cx),
4390 vec![
4391 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
4392 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
4393 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
4394 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
4395 ]
4396 );
4397 });
4398
4399 view.update(cx, |view, cx| {
4400 view.move_line_down(&MoveLineDown, cx);
4401 assert_eq!(
4402 view.display_text(cx),
4403 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
4404 );
4405 assert_eq!(
4406 view.selection_ranges(cx),
4407 vec![
4408 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4409 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
4410 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
4411 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
4412 ]
4413 );
4414 });
4415
4416 view.update(cx, |view, cx| {
4417 view.move_line_up(&MoveLineUp, cx);
4418 assert_eq!(
4419 view.display_text(cx),
4420 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
4421 );
4422 assert_eq!(
4423 view.selection_ranges(cx),
4424 vec![
4425 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
4426 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4427 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
4428 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
4429 ]
4430 );
4431 });
4432 }
4433
4434 #[gpui::test]
4435 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
4436 let buffer = cx.add_model(|cx| Buffer::new(0, "one✅ two three four five six ", cx));
4437 let settings = EditorSettings::test(&cx);
4438 let view = cx
4439 .add_window(Default::default(), |cx| {
4440 build_editor(buffer.clone(), settings, cx)
4441 })
4442 .1;
4443
4444 // Cut with three selections. Clipboard text is divided into three slices.
4445 view.update(cx, |view, cx| {
4446 view.select_ranges(vec![0..7, 11..17, 22..27], false, cx);
4447 view.cut(&Cut, cx);
4448 assert_eq!(view.display_text(cx), "two four six ");
4449 });
4450
4451 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
4452 view.update(cx, |view, cx| {
4453 view.select_ranges(vec![4..4, 9..9, 13..13], false, cx);
4454 view.paste(&Paste, cx);
4455 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
4456 assert_eq!(
4457 view.selection_ranges(cx),
4458 &[
4459 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
4460 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
4461 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
4462 ]
4463 );
4464 });
4465
4466 // Paste again but with only two cursors. Since the number of cursors doesn't
4467 // match the number of slices in the clipboard, the entire clipboard text
4468 // is pasted at each cursor.
4469 view.update(cx, |view, cx| {
4470 view.select_ranges(vec![0..0, 31..31], false, cx);
4471 view.handle_input(&Input("( ".into()), cx);
4472 view.paste(&Paste, cx);
4473 view.handle_input(&Input(") ".into()), cx);
4474 assert_eq!(
4475 view.display_text(cx),
4476 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
4477 );
4478 });
4479
4480 view.update(cx, |view, cx| {
4481 view.select_ranges(vec![0..0], false, cx);
4482 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
4483 assert_eq!(
4484 view.display_text(cx),
4485 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
4486 );
4487 });
4488
4489 // Cut with three selections, one of which is full-line.
4490 view.update(cx, |view, cx| {
4491 view.select_display_ranges(
4492 &[
4493 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
4494 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
4495 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
4496 ],
4497 cx,
4498 )
4499 .unwrap();
4500 view.cut(&Cut, cx);
4501 assert_eq!(
4502 view.display_text(cx),
4503 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
4504 );
4505 });
4506
4507 // Paste with three selections, noticing how the copied selection that was full-line
4508 // gets inserted before the second cursor.
4509 view.update(cx, |view, cx| {
4510 view.select_display_ranges(
4511 &[
4512 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4513 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
4514 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
4515 ],
4516 cx,
4517 )
4518 .unwrap();
4519 view.paste(&Paste, cx);
4520 assert_eq!(
4521 view.display_text(cx),
4522 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
4523 );
4524 assert_eq!(
4525 view.selection_ranges(cx),
4526 &[
4527 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4528 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4529 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
4530 ]
4531 );
4532 });
4533
4534 // Copy with a single cursor only, which writes the whole line into the clipboard.
4535 view.update(cx, |view, cx| {
4536 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx)
4537 .unwrap();
4538 view.copy(&Copy, cx);
4539 });
4540
4541 // Paste with three selections, noticing how the copied full-line selection is inserted
4542 // before the empty selections but replaces the selection that is non-empty.
4543 view.update(cx, |view, cx| {
4544 view.select_display_ranges(
4545 &[
4546 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4547 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
4548 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4549 ],
4550 cx,
4551 )
4552 .unwrap();
4553 view.paste(&Paste, cx);
4554 assert_eq!(
4555 view.display_text(cx),
4556 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
4557 );
4558 assert_eq!(
4559 view.selection_ranges(cx),
4560 &[
4561 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
4562 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
4563 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
4564 ]
4565 );
4566 });
4567 }
4568
4569 #[gpui::test]
4570 fn test_select_all(cx: &mut gpui::MutableAppContext) {
4571 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\nde\nfgh", cx));
4572 let settings = EditorSettings::test(&cx);
4573 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4574 view.update(cx, |view, cx| {
4575 view.select_all(&SelectAll, cx);
4576 assert_eq!(
4577 view.selection_ranges(cx),
4578 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
4579 );
4580 });
4581 }
4582
4583 #[gpui::test]
4584 fn test_select_line(cx: &mut gpui::MutableAppContext) {
4585 let settings = EditorSettings::test(&cx);
4586 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(6, 5), cx));
4587 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4588 view.update(cx, |view, cx| {
4589 view.select_display_ranges(
4590 &[
4591 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
4592 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4593 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4594 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
4595 ],
4596 cx,
4597 )
4598 .unwrap();
4599 view.select_line(&SelectLine, cx);
4600 assert_eq!(
4601 view.selection_ranges(cx),
4602 vec![
4603 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
4604 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
4605 ]
4606 );
4607 });
4608
4609 view.update(cx, |view, cx| {
4610 view.select_line(&SelectLine, cx);
4611 assert_eq!(
4612 view.selection_ranges(cx),
4613 vec![
4614 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
4615 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
4616 ]
4617 );
4618 });
4619
4620 view.update(cx, |view, cx| {
4621 view.select_line(&SelectLine, cx);
4622 assert_eq!(
4623 view.selection_ranges(cx),
4624 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
4625 );
4626 });
4627 }
4628
4629 #[gpui::test]
4630 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
4631 let settings = EditorSettings::test(&cx);
4632 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(9, 5), cx));
4633 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4634 view.update(cx, |view, cx| {
4635 view.fold_ranges(
4636 vec![
4637 Point::new(0, 2)..Point::new(1, 2),
4638 Point::new(2, 3)..Point::new(4, 1),
4639 Point::new(7, 0)..Point::new(8, 4),
4640 ],
4641 cx,
4642 );
4643 view.select_display_ranges(
4644 &[
4645 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
4646 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4647 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4648 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
4649 ],
4650 cx,
4651 )
4652 .unwrap();
4653 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
4654 });
4655
4656 view.update(cx, |view, cx| {
4657 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
4658 assert_eq!(
4659 view.display_text(cx),
4660 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
4661 );
4662 assert_eq!(
4663 view.selection_ranges(cx),
4664 [
4665 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4666 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4667 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
4668 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
4669 ]
4670 );
4671 });
4672
4673 view.update(cx, |view, cx| {
4674 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx)
4675 .unwrap();
4676 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
4677 assert_eq!(
4678 view.display_text(cx),
4679 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
4680 );
4681 assert_eq!(
4682 view.selection_ranges(cx),
4683 [
4684 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
4685 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
4686 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
4687 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
4688 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
4689 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
4690 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
4691 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
4692 ]
4693 );
4694 });
4695 }
4696
4697 #[gpui::test]
4698 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
4699 let settings = EditorSettings::test(&cx);
4700 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\ndefghi\n\njk\nlmno\n", cx));
4701 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4702
4703 view.update(cx, |view, cx| {
4704 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx)
4705 .unwrap();
4706 });
4707 view.update(cx, |view, cx| {
4708 view.add_selection_above(&AddSelectionAbove, cx);
4709 assert_eq!(
4710 view.selection_ranges(cx),
4711 vec![
4712 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4713 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
4714 ]
4715 );
4716 });
4717
4718 view.update(cx, |view, cx| {
4719 view.add_selection_above(&AddSelectionAbove, cx);
4720 assert_eq!(
4721 view.selection_ranges(cx),
4722 vec![
4723 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4724 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
4725 ]
4726 );
4727 });
4728
4729 view.update(cx, |view, cx| {
4730 view.add_selection_below(&AddSelectionBelow, cx);
4731 assert_eq!(
4732 view.selection_ranges(cx),
4733 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
4734 );
4735 });
4736
4737 view.update(cx, |view, cx| {
4738 view.add_selection_below(&AddSelectionBelow, cx);
4739 assert_eq!(
4740 view.selection_ranges(cx),
4741 vec![
4742 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
4743 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
4744 ]
4745 );
4746 });
4747
4748 view.update(cx, |view, cx| {
4749 view.add_selection_below(&AddSelectionBelow, cx);
4750 assert_eq!(
4751 view.selection_ranges(cx),
4752 vec![
4753 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
4754 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
4755 ]
4756 );
4757 });
4758
4759 view.update(cx, |view, cx| {
4760 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx)
4761 .unwrap();
4762 });
4763 view.update(cx, |view, cx| {
4764 view.add_selection_below(&AddSelectionBelow, cx);
4765 assert_eq!(
4766 view.selection_ranges(cx),
4767 vec![
4768 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
4769 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
4770 ]
4771 );
4772 });
4773
4774 view.update(cx, |view, cx| {
4775 view.add_selection_below(&AddSelectionBelow, cx);
4776 assert_eq!(
4777 view.selection_ranges(cx),
4778 vec![
4779 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
4780 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
4781 ]
4782 );
4783 });
4784
4785 view.update(cx, |view, cx| {
4786 view.add_selection_above(&AddSelectionAbove, cx);
4787 assert_eq!(
4788 view.selection_ranges(cx),
4789 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
4790 );
4791 });
4792
4793 view.update(cx, |view, cx| {
4794 view.add_selection_above(&AddSelectionAbove, cx);
4795 assert_eq!(
4796 view.selection_ranges(cx),
4797 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
4798 );
4799 });
4800
4801 view.update(cx, |view, cx| {
4802 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx)
4803 .unwrap();
4804 view.add_selection_below(&AddSelectionBelow, cx);
4805 assert_eq!(
4806 view.selection_ranges(cx),
4807 vec![
4808 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
4809 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
4810 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
4811 ]
4812 );
4813 });
4814
4815 view.update(cx, |view, cx| {
4816 view.add_selection_below(&AddSelectionBelow, cx);
4817 assert_eq!(
4818 view.selection_ranges(cx),
4819 vec![
4820 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
4821 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
4822 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
4823 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
4824 ]
4825 );
4826 });
4827
4828 view.update(cx, |view, cx| {
4829 view.add_selection_above(&AddSelectionAbove, cx);
4830 assert_eq!(
4831 view.selection_ranges(cx),
4832 vec![
4833 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
4834 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
4835 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
4836 ]
4837 );
4838 });
4839
4840 view.update(cx, |view, cx| {
4841 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx)
4842 .unwrap();
4843 });
4844 view.update(cx, |view, cx| {
4845 view.add_selection_above(&AddSelectionAbove, cx);
4846 assert_eq!(
4847 view.selection_ranges(cx),
4848 vec![
4849 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
4850 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
4851 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
4852 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
4853 ]
4854 );
4855 });
4856
4857 view.update(cx, |view, cx| {
4858 view.add_selection_below(&AddSelectionBelow, cx);
4859 assert_eq!(
4860 view.selection_ranges(cx),
4861 vec![
4862 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
4863 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
4864 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
4865 ]
4866 );
4867 });
4868 }
4869
4870 #[gpui::test]
4871 async fn test_select_larger_smaller_syntax_node(mut cx: gpui::TestAppContext) {
4872 let settings = cx.read(EditorSettings::test);
4873 let language = Some(Arc::new(Language::new(
4874 LanguageConfig::default(),
4875 tree_sitter_rust::language(),
4876 )));
4877
4878 let text = r#"
4879 use mod1::mod2::{mod3, mod4};
4880
4881 fn fn_1(param1: bool, param2: &str) {
4882 let var1 = "text";
4883 }
4884 "#
4885 .unindent();
4886
4887 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
4888 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
4889 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing())
4890 .await;
4891
4892 view.update(&mut cx, |view, cx| {
4893 view.select_display_ranges(
4894 &[
4895 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
4896 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
4897 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
4898 ],
4899 cx,
4900 )
4901 .unwrap();
4902 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
4903 });
4904 assert_eq!(
4905 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4906 &[
4907 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
4908 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
4909 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
4910 ]
4911 );
4912
4913 view.update(&mut cx, |view, cx| {
4914 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
4915 });
4916 assert_eq!(
4917 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4918 &[
4919 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
4920 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
4921 ]
4922 );
4923
4924 view.update(&mut cx, |view, cx| {
4925 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
4926 });
4927 assert_eq!(
4928 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4929 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
4930 );
4931
4932 // Trying to expand the selected syntax node one more time has no effect.
4933 view.update(&mut cx, |view, cx| {
4934 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
4935 });
4936 assert_eq!(
4937 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4938 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
4939 );
4940
4941 view.update(&mut cx, |view, cx| {
4942 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
4943 });
4944 assert_eq!(
4945 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4946 &[
4947 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
4948 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
4949 ]
4950 );
4951
4952 view.update(&mut cx, |view, cx| {
4953 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
4954 });
4955 assert_eq!(
4956 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4957 &[
4958 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
4959 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
4960 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
4961 ]
4962 );
4963
4964 view.update(&mut cx, |view, cx| {
4965 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
4966 });
4967 assert_eq!(
4968 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4969 &[
4970 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
4971 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
4972 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
4973 ]
4974 );
4975
4976 // Trying to shrink the selected syntax node one more time has no effect.
4977 view.update(&mut cx, |view, cx| {
4978 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
4979 });
4980 assert_eq!(
4981 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4982 &[
4983 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
4984 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
4985 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
4986 ]
4987 );
4988
4989 // Ensure that we keep expanding the selection if the larger selection starts or ends within
4990 // a fold.
4991 view.update(&mut cx, |view, cx| {
4992 view.fold_ranges(
4993 vec![
4994 Point::new(0, 21)..Point::new(0, 24),
4995 Point::new(3, 20)..Point::new(3, 22),
4996 ],
4997 cx,
4998 );
4999 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5000 });
5001 assert_eq!(
5002 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
5003 &[
5004 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
5005 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
5006 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
5007 ]
5008 );
5009 }
5010
5011 #[gpui::test]
5012 async fn test_autoclose_pairs(mut cx: gpui::TestAppContext) {
5013 let settings = cx.read(EditorSettings::test);
5014 let language = Some(Arc::new(Language::new(
5015 LanguageConfig {
5016 brackets: vec![
5017 BracketPair {
5018 start: "{".to_string(),
5019 end: "}".to_string(),
5020 close: true,
5021 newline: true,
5022 },
5023 BracketPair {
5024 start: "/*".to_string(),
5025 end: " */".to_string(),
5026 close: true,
5027 newline: true,
5028 },
5029 ],
5030 ..Default::default()
5031 },
5032 tree_sitter_rust::language(),
5033 )));
5034
5035 let text = r#"
5036 a
5037
5038 /
5039
5040 "#
5041 .unindent();
5042
5043 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
5044 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
5045 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing())
5046 .await;
5047
5048 view.update(&mut cx, |view, cx| {
5049 view.select_display_ranges(
5050 &[
5051 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
5052 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5053 ],
5054 cx,
5055 )
5056 .unwrap();
5057 view.handle_input(&Input("{".to_string()), cx);
5058 view.handle_input(&Input("{".to_string()), cx);
5059 view.handle_input(&Input("{".to_string()), cx);
5060 assert_eq!(
5061 view.text(cx),
5062 "
5063 {{{}}}
5064 {{{}}}
5065 /
5066
5067 "
5068 .unindent()
5069 );
5070
5071 view.move_right(&MoveRight, cx);
5072 view.handle_input(&Input("}".to_string()), cx);
5073 view.handle_input(&Input("}".to_string()), cx);
5074 view.handle_input(&Input("}".to_string()), cx);
5075 assert_eq!(
5076 view.text(cx),
5077 "
5078 {{{}}}}
5079 {{{}}}}
5080 /
5081
5082 "
5083 .unindent()
5084 );
5085
5086 view.undo(&Undo, cx);
5087 view.handle_input(&Input("/".to_string()), cx);
5088 view.handle_input(&Input("*".to_string()), cx);
5089 assert_eq!(
5090 view.text(cx),
5091 "
5092 /* */
5093 /* */
5094 /
5095
5096 "
5097 .unindent()
5098 );
5099
5100 view.undo(&Undo, cx);
5101 view.select_display_ranges(
5102 &[
5103 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5104 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5105 ],
5106 cx,
5107 )
5108 .unwrap();
5109 view.handle_input(&Input("*".to_string()), cx);
5110 assert_eq!(
5111 view.text(cx),
5112 "
5113 a
5114
5115 /*
5116 *
5117 "
5118 .unindent()
5119 );
5120 });
5121 }
5122
5123 #[gpui::test]
5124 async fn test_toggle_comment(mut cx: gpui::TestAppContext) {
5125 let settings = cx.read(EditorSettings::test);
5126 let language = Some(Arc::new(Language::new(
5127 LanguageConfig {
5128 line_comment: Some("// ".to_string()),
5129 ..Default::default()
5130 },
5131 tree_sitter_rust::language(),
5132 )));
5133
5134 let text = "
5135 fn a() {
5136 //b();
5137 // c();
5138 // d();
5139 }
5140 "
5141 .unindent();
5142
5143 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
5144 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
5145
5146 view.update(&mut cx, |editor, cx| {
5147 // If multiple selections intersect a line, the line is only
5148 // toggled once.
5149 editor
5150 .select_display_ranges(
5151 &[
5152 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
5153 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
5154 ],
5155 cx,
5156 )
5157 .unwrap();
5158 editor.toggle_comments(&ToggleComments, cx);
5159 assert_eq!(
5160 editor.text(cx),
5161 "
5162 fn a() {
5163 b();
5164 c();
5165 d();
5166 }
5167 "
5168 .unindent()
5169 );
5170
5171 // The comment prefix is inserted at the same column for every line
5172 // in a selection.
5173 editor
5174 .select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx)
5175 .unwrap();
5176 editor.toggle_comments(&ToggleComments, cx);
5177 assert_eq!(
5178 editor.text(cx),
5179 "
5180 fn a() {
5181 // b();
5182 // c();
5183 // d();
5184 }
5185 "
5186 .unindent()
5187 );
5188
5189 // If a selection ends at the beginning of a line, that line is not toggled.
5190 editor
5191 .select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx)
5192 .unwrap();
5193 editor.toggle_comments(&ToggleComments, cx);
5194 assert_eq!(
5195 editor.text(cx),
5196 "
5197 fn a() {
5198 // b();
5199 c();
5200 // d();
5201 }
5202 "
5203 .unindent()
5204 );
5205 });
5206 }
5207
5208 #[gpui::test]
5209 async fn test_extra_newline_insertion(mut cx: gpui::TestAppContext) {
5210 let settings = cx.read(EditorSettings::test);
5211 let language = Some(Arc::new(Language::new(
5212 LanguageConfig {
5213 brackets: vec![
5214 BracketPair {
5215 start: "{".to_string(),
5216 end: "}".to_string(),
5217 close: true,
5218 newline: true,
5219 },
5220 BracketPair {
5221 start: "/* ".to_string(),
5222 end: " */".to_string(),
5223 close: true,
5224 newline: true,
5225 },
5226 ],
5227 ..Default::default()
5228 },
5229 tree_sitter_rust::language(),
5230 )));
5231
5232 let text = concat!(
5233 "{ }\n", // Suppress rustfmt
5234 " x\n", //
5235 " /* */\n", //
5236 "x\n", //
5237 "{{} }\n", //
5238 );
5239
5240 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
5241 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
5242 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing())
5243 .await;
5244
5245 view.update(&mut cx, |view, cx| {
5246 view.select_display_ranges(
5247 &[
5248 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
5249 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
5250 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
5251 ],
5252 cx,
5253 )
5254 .unwrap();
5255 view.newline(&Newline, cx);
5256
5257 assert_eq!(
5258 view.buffer().read(cx).text(),
5259 concat!(
5260 "{ \n", // Suppress rustfmt
5261 "\n", //
5262 "}\n", //
5263 " x\n", //
5264 " /* \n", //
5265 " \n", //
5266 " */\n", //
5267 "x\n", //
5268 "{{} \n", //
5269 "}\n", //
5270 )
5271 );
5272 });
5273 }
5274
5275 impl Editor {
5276 fn selection_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
5277 self.selections_in_range(
5278 self.selection_set_id,
5279 DisplayPoint::zero()..self.max_point(cx),
5280 cx,
5281 )
5282 .collect::<Vec<_>>()
5283 }
5284 }
5285
5286 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
5287 let point = DisplayPoint::new(row as u32, column as u32);
5288 point..point
5289 }
5290
5291 fn build_editor(
5292 buffer: ModelHandle<Buffer>,
5293 settings: EditorSettings,
5294 cx: &mut ViewContext<Editor>,
5295 ) -> Editor {
5296 Editor::for_buffer(buffer, move |_| settings.clone(), cx)
5297 }
5298}
5299
5300trait RangeExt<T> {
5301 fn sorted(&self) -> Range<T>;
5302 fn to_inclusive(&self) -> RangeInclusive<T>;
5303}
5304
5305impl<T: Ord + Clone> RangeExt<T> for Range<T> {
5306 fn sorted(&self) -> Self {
5307 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
5308 }
5309
5310 fn to_inclusive(&self) -> RangeInclusive<T> {
5311 self.start.clone()..=self.end.clone()
5312 }
5313}