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,
27 collections::HashMap,
28 iter, mem,
29 ops::{Range, RangeInclusive},
30 rc::Rc,
31 sync::Arc,
32 time::Duration,
33};
34use sum_tree::Bias;
35use theme::{DiagnosticStyle, EditorStyle, SyntaxTheme};
36use util::post_inc;
37
38const CURSOR_BLINK_INTERVAL: Duration = Duration::from_millis(500);
39const MAX_LINE_LEN: usize = 1024;
40
41action!(Cancel);
42action!(Backspace);
43action!(Delete);
44action!(Input, String);
45action!(Newline);
46action!(Tab);
47action!(DeleteLine);
48action!(DeleteToPreviousWordBoundary);
49action!(DeleteToNextWordBoundary);
50action!(DeleteToBeginningOfLine);
51action!(DeleteToEndOfLine);
52action!(CutToEndOfLine);
53action!(DuplicateLine);
54action!(MoveLineUp);
55action!(MoveLineDown);
56action!(Cut);
57action!(Copy);
58action!(Paste);
59action!(Undo);
60action!(Redo);
61action!(MoveUp);
62action!(MoveDown);
63action!(MoveLeft);
64action!(MoveRight);
65action!(MoveToPreviousWordBoundary);
66action!(MoveToNextWordBoundary);
67action!(MoveToBeginningOfLine);
68action!(MoveToEndOfLine);
69action!(MoveToBeginning);
70action!(MoveToEnd);
71action!(SelectUp);
72action!(SelectDown);
73action!(SelectLeft);
74action!(SelectRight);
75action!(SelectToPreviousWordBoundary);
76action!(SelectToNextWordBoundary);
77action!(SelectToBeginningOfLine, bool);
78action!(SelectToEndOfLine);
79action!(SelectToBeginning);
80action!(SelectToEnd);
81action!(SelectAll);
82action!(SelectLine);
83action!(SplitSelectionIntoLines);
84action!(AddSelectionAbove);
85action!(AddSelectionBelow);
86action!(SelectLargerSyntaxNode);
87action!(SelectSmallerSyntaxNode);
88action!(MoveToEnclosingBracket);
89action!(ShowNextDiagnostic);
90action!(PageUp);
91action!(PageDown);
92action!(Fold);
93action!(Unfold);
94action!(FoldSelectedRanges);
95action!(Scroll, Vector2F);
96action!(Select, SelectPhase);
97
98pub fn init(cx: &mut MutableAppContext) {
99 cx.add_bindings(vec![
100 Binding::new("escape", Cancel, Some("Editor")),
101 Binding::new("backspace", Backspace, Some("Editor")),
102 Binding::new("ctrl-h", Backspace, Some("Editor")),
103 Binding::new("delete", Delete, Some("Editor")),
104 Binding::new("ctrl-d", Delete, Some("Editor")),
105 Binding::new("enter", Newline, Some("Editor && mode == full")),
106 Binding::new(
107 "alt-enter",
108 Input("\n".into()),
109 Some("Editor && mode == auto_height"),
110 ),
111 Binding::new("tab", Tab, Some("Editor")),
112 Binding::new("ctrl-shift-K", DeleteLine, Some("Editor")),
113 Binding::new(
114 "alt-backspace",
115 DeleteToPreviousWordBoundary,
116 Some("Editor"),
117 ),
118 Binding::new("alt-h", DeleteToPreviousWordBoundary, Some("Editor")),
119 Binding::new("alt-delete", DeleteToNextWordBoundary, Some("Editor")),
120 Binding::new("alt-d", DeleteToNextWordBoundary, Some("Editor")),
121 Binding::new("cmd-backspace", DeleteToBeginningOfLine, Some("Editor")),
122 Binding::new("cmd-delete", DeleteToEndOfLine, Some("Editor")),
123 Binding::new("ctrl-k", CutToEndOfLine, Some("Editor")),
124 Binding::new("cmd-shift-D", DuplicateLine, Some("Editor")),
125 Binding::new("ctrl-cmd-up", MoveLineUp, Some("Editor")),
126 Binding::new("ctrl-cmd-down", MoveLineDown, Some("Editor")),
127 Binding::new("cmd-x", Cut, Some("Editor")),
128 Binding::new("cmd-c", Copy, Some("Editor")),
129 Binding::new("cmd-v", Paste, Some("Editor")),
130 Binding::new("cmd-z", Undo, Some("Editor")),
131 Binding::new("cmd-shift-Z", Redo, Some("Editor")),
132 Binding::new("up", MoveUp, Some("Editor")),
133 Binding::new("down", MoveDown, Some("Editor")),
134 Binding::new("left", MoveLeft, Some("Editor")),
135 Binding::new("right", MoveRight, Some("Editor")),
136 Binding::new("ctrl-p", MoveUp, Some("Editor")),
137 Binding::new("ctrl-n", MoveDown, Some("Editor")),
138 Binding::new("ctrl-b", MoveLeft, Some("Editor")),
139 Binding::new("ctrl-f", MoveRight, Some("Editor")),
140 Binding::new("alt-left", MoveToPreviousWordBoundary, Some("Editor")),
141 Binding::new("alt-b", MoveToPreviousWordBoundary, Some("Editor")),
142 Binding::new("alt-right", MoveToNextWordBoundary, Some("Editor")),
143 Binding::new("alt-f", MoveToNextWordBoundary, Some("Editor")),
144 Binding::new("cmd-left", MoveToBeginningOfLine, Some("Editor")),
145 Binding::new("ctrl-a", MoveToBeginningOfLine, Some("Editor")),
146 Binding::new("cmd-right", MoveToEndOfLine, Some("Editor")),
147 Binding::new("ctrl-e", MoveToEndOfLine, Some("Editor")),
148 Binding::new("cmd-up", MoveToBeginning, Some("Editor")),
149 Binding::new("cmd-down", MoveToEnd, Some("Editor")),
150 Binding::new("shift-up", SelectUp, Some("Editor")),
151 Binding::new("ctrl-shift-P", SelectUp, Some("Editor")),
152 Binding::new("shift-down", SelectDown, Some("Editor")),
153 Binding::new("ctrl-shift-N", SelectDown, Some("Editor")),
154 Binding::new("shift-left", SelectLeft, Some("Editor")),
155 Binding::new("ctrl-shift-B", SelectLeft, Some("Editor")),
156 Binding::new("shift-right", SelectRight, Some("Editor")),
157 Binding::new("ctrl-shift-F", SelectRight, Some("Editor")),
158 Binding::new(
159 "alt-shift-left",
160 SelectToPreviousWordBoundary,
161 Some("Editor"),
162 ),
163 Binding::new("alt-shift-B", SelectToPreviousWordBoundary, Some("Editor")),
164 Binding::new("alt-shift-right", SelectToNextWordBoundary, Some("Editor")),
165 Binding::new("alt-shift-F", SelectToNextWordBoundary, Some("Editor")),
166 Binding::new(
167 "cmd-shift-left",
168 SelectToBeginningOfLine(true),
169 Some("Editor"),
170 ),
171 Binding::new(
172 "ctrl-shift-A",
173 SelectToBeginningOfLine(true),
174 Some("Editor"),
175 ),
176 Binding::new("cmd-shift-right", SelectToEndOfLine, Some("Editor")),
177 Binding::new("ctrl-shift-E", SelectToEndOfLine, Some("Editor")),
178 Binding::new("cmd-shift-up", SelectToBeginning, Some("Editor")),
179 Binding::new("cmd-shift-down", SelectToEnd, Some("Editor")),
180 Binding::new("cmd-a", SelectAll, Some("Editor")),
181 Binding::new("cmd-l", SelectLine, Some("Editor")),
182 Binding::new("cmd-shift-L", SplitSelectionIntoLines, Some("Editor")),
183 Binding::new("cmd-alt-up", AddSelectionAbove, Some("Editor")),
184 Binding::new("cmd-ctrl-p", AddSelectionAbove, Some("Editor")),
185 Binding::new("cmd-alt-down", AddSelectionBelow, Some("Editor")),
186 Binding::new("cmd-ctrl-n", AddSelectionBelow, Some("Editor")),
187 Binding::new("alt-up", SelectLargerSyntaxNode, Some("Editor")),
188 Binding::new("ctrl-w", SelectLargerSyntaxNode, Some("Editor")),
189 Binding::new("alt-down", SelectSmallerSyntaxNode, Some("Editor")),
190 Binding::new("ctrl-shift-W", SelectSmallerSyntaxNode, Some("Editor")),
191 Binding::new("f8", ShowNextDiagnostic, Some("Editor")),
192 Binding::new("ctrl-m", MoveToEnclosingBracket, Some("Editor")),
193 Binding::new("pageup", PageUp, Some("Editor")),
194 Binding::new("pagedown", PageDown, Some("Editor")),
195 Binding::new("alt-cmd-[", Fold, Some("Editor")),
196 Binding::new("alt-cmd-]", Unfold, Some("Editor")),
197 Binding::new("alt-cmd-f", FoldSelectedRanges, Some("Editor")),
198 ]);
199
200 cx.add_action(|this: &mut Editor, action: &Scroll, cx| this.set_scroll_position(action.0, cx));
201 cx.add_action(Editor::select);
202 cx.add_action(Editor::cancel);
203 cx.add_action(Editor::handle_input);
204 cx.add_action(Editor::newline);
205 cx.add_action(Editor::backspace);
206 cx.add_action(Editor::delete);
207 cx.add_action(Editor::tab);
208 cx.add_action(Editor::delete_line);
209 cx.add_action(Editor::delete_to_previous_word_boundary);
210 cx.add_action(Editor::delete_to_next_word_boundary);
211 cx.add_action(Editor::delete_to_beginning_of_line);
212 cx.add_action(Editor::delete_to_end_of_line);
213 cx.add_action(Editor::cut_to_end_of_line);
214 cx.add_action(Editor::duplicate_line);
215 cx.add_action(Editor::move_line_up);
216 cx.add_action(Editor::move_line_down);
217 cx.add_action(Editor::cut);
218 cx.add_action(Editor::copy);
219 cx.add_action(Editor::paste);
220 cx.add_action(Editor::undo);
221 cx.add_action(Editor::redo);
222 cx.add_action(Editor::move_up);
223 cx.add_action(Editor::move_down);
224 cx.add_action(Editor::move_left);
225 cx.add_action(Editor::move_right);
226 cx.add_action(Editor::move_to_previous_word_boundary);
227 cx.add_action(Editor::move_to_next_word_boundary);
228 cx.add_action(Editor::move_to_beginning_of_line);
229 cx.add_action(Editor::move_to_end_of_line);
230 cx.add_action(Editor::move_to_beginning);
231 cx.add_action(Editor::move_to_end);
232 cx.add_action(Editor::select_up);
233 cx.add_action(Editor::select_down);
234 cx.add_action(Editor::select_left);
235 cx.add_action(Editor::select_right);
236 cx.add_action(Editor::select_to_previous_word_boundary);
237 cx.add_action(Editor::select_to_next_word_boundary);
238 cx.add_action(Editor::select_to_beginning_of_line);
239 cx.add_action(Editor::select_to_end_of_line);
240 cx.add_action(Editor::select_to_beginning);
241 cx.add_action(Editor::select_to_end);
242 cx.add_action(Editor::select_all);
243 cx.add_action(Editor::select_line);
244 cx.add_action(Editor::split_selection_into_lines);
245 cx.add_action(Editor::add_selection_above);
246 cx.add_action(Editor::add_selection_below);
247 cx.add_action(Editor::select_larger_syntax_node);
248 cx.add_action(Editor::select_smaller_syntax_node);
249 cx.add_action(Editor::move_to_enclosing_bracket);
250 cx.add_action(Editor::show_next_diagnostic);
251 cx.add_action(Editor::page_up);
252 cx.add_action(Editor::page_down);
253 cx.add_action(Editor::fold);
254 cx.add_action(Editor::unfold);
255 cx.add_action(Editor::fold_selected_ranges);
256}
257
258trait SelectionExt {
259 fn display_range(&self, map: &DisplayMapSnapshot) -> Range<DisplayPoint>;
260 fn spanned_rows(
261 &self,
262 include_end_if_at_line_start: bool,
263 map: &DisplayMapSnapshot,
264 ) -> SpannedRows;
265}
266
267struct SpannedRows {
268 buffer_rows: Range<u32>,
269 display_rows: Range<u32>,
270}
271
272#[derive(Clone, Debug)]
273pub enum SelectPhase {
274 Begin {
275 position: DisplayPoint,
276 add: bool,
277 click_count: usize,
278 },
279 Extend {
280 position: DisplayPoint,
281 click_count: usize,
282 },
283 Update {
284 position: DisplayPoint,
285 scroll_position: Vector2F,
286 },
287 End,
288}
289
290#[derive(Clone, Debug)]
291enum SelectMode {
292 Character,
293 Word(Range<Anchor>),
294 Line(Range<Anchor>),
295 All,
296}
297
298#[derive(Copy, Clone, PartialEq, Eq)]
299pub enum EditorMode {
300 SingleLine,
301 AutoHeight { max_lines: usize },
302 Full,
303}
304
305#[derive(Clone)]
306pub struct EditorSettings {
307 pub tab_size: usize,
308 pub style: EditorStyle,
309}
310
311pub struct Editor {
312 handle: WeakViewHandle<Self>,
313 buffer: ModelHandle<Buffer>,
314 display_map: ModelHandle<DisplayMap>,
315 selection_set_id: SelectionSetId,
316 pending_selection: Option<PendingSelection>,
317 next_selection_id: usize,
318 add_selections_state: Option<AddSelectionsState>,
319 autoclose_stack: Vec<BracketPairState>,
320 select_larger_syntax_node_stack: Vec<Box<[Selection<usize>]>>,
321 active_diagnostics: Option<ActiveDiagnosticGroup>,
322 scroll_position: Vector2F,
323 scroll_top_anchor: Anchor,
324 autoscroll_requested: bool,
325 build_settings: Rc<RefCell<dyn Fn(&AppContext) -> EditorSettings>>,
326 focused: bool,
327 show_local_cursors: bool,
328 blink_epoch: usize,
329 blinking_paused: bool,
330 mode: EditorMode,
331 placeholder_text: Option<Arc<str>>,
332}
333
334pub struct Snapshot {
335 pub mode: EditorMode,
336 pub display_snapshot: DisplayMapSnapshot,
337 pub placeholder_text: Option<Arc<str>>,
338 is_focused: bool,
339 scroll_position: Vector2F,
340 scroll_top_anchor: Anchor,
341}
342
343struct PendingSelection {
344 selection: Selection<Anchor>,
345 mode: SelectMode,
346}
347
348struct AddSelectionsState {
349 above: bool,
350 stack: Vec<usize>,
351}
352
353#[derive(Debug)]
354struct BracketPairState {
355 ranges: AnchorRangeSet,
356 pair: BracketPair,
357}
358
359#[derive(Debug)]
360struct ActiveDiagnosticGroup {
361 primary_range: Range<Anchor>,
362 primary_message: String,
363 blocks: HashMap<BlockId, Diagnostic>,
364 is_valid: bool,
365}
366
367#[derive(Serialize, Deserialize)]
368struct ClipboardSelection {
369 len: usize,
370 is_entire_line: bool,
371}
372
373impl Editor {
374 pub fn single_line(
375 build_settings: impl 'static + Fn(&AppContext) -> EditorSettings,
376 cx: &mut ViewContext<Self>,
377 ) -> Self {
378 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
379 let mut view = Self::for_buffer(buffer, build_settings, cx);
380 view.mode = EditorMode::SingleLine;
381 view
382 }
383
384 pub fn auto_height(
385 max_lines: usize,
386 build_settings: impl 'static + Fn(&AppContext) -> EditorSettings,
387 cx: &mut ViewContext<Self>,
388 ) -> Self {
389 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
390 let mut view = Self::for_buffer(buffer, build_settings, cx);
391 view.mode = EditorMode::AutoHeight { max_lines };
392 view
393 }
394
395 pub fn for_buffer(
396 buffer: ModelHandle<Buffer>,
397 build_settings: impl 'static + Fn(&AppContext) -> EditorSettings,
398 cx: &mut ViewContext<Self>,
399 ) -> Self {
400 Self::new(buffer, Rc::new(RefCell::new(build_settings)), cx)
401 }
402
403 pub fn clone(&self, cx: &mut ViewContext<Self>) -> Self {
404 let mut clone = Self::new(self.buffer.clone(), self.build_settings.clone(), cx);
405 clone.scroll_position = self.scroll_position;
406 clone.scroll_top_anchor = self.scroll_top_anchor.clone();
407 clone
408 }
409
410 pub fn new(
411 buffer: ModelHandle<Buffer>,
412 build_settings: Rc<RefCell<dyn Fn(&AppContext) -> EditorSettings>>,
413 cx: &mut ViewContext<Self>,
414 ) -> Self {
415 let settings = build_settings.borrow_mut()(cx);
416 let display_map = cx.add_model(|cx| {
417 DisplayMap::new(
418 buffer.clone(),
419 settings.tab_size,
420 settings.style.text.font_id,
421 settings.style.text.font_size,
422 None,
423 cx,
424 )
425 });
426 cx.observe(&buffer, Self::on_buffer_changed).detach();
427 cx.subscribe(&buffer, Self::on_buffer_event).detach();
428 cx.observe(&display_map, Self::on_display_map_changed)
429 .detach();
430
431 let mut next_selection_id = 0;
432 let selection_set_id = buffer.update(cx, |buffer, cx| {
433 buffer.add_selection_set(
434 &[Selection {
435 id: post_inc(&mut next_selection_id),
436 start: 0,
437 end: 0,
438 reversed: false,
439 goal: SelectionGoal::None,
440 }],
441 cx,
442 )
443 });
444 Self {
445 handle: cx.handle().downgrade(),
446 buffer,
447 display_map,
448 selection_set_id,
449 pending_selection: None,
450 next_selection_id,
451 add_selections_state: None,
452 autoclose_stack: Default::default(),
453 select_larger_syntax_node_stack: Vec::new(),
454 active_diagnostics: None,
455 build_settings,
456 scroll_position: Vector2F::zero(),
457 scroll_top_anchor: Anchor::min(),
458 autoscroll_requested: false,
459 focused: false,
460 show_local_cursors: false,
461 blink_epoch: 0,
462 blinking_paused: false,
463 mode: EditorMode::Full,
464 placeholder_text: None,
465 }
466 }
467
468 pub fn replica_id(&self, cx: &AppContext) -> ReplicaId {
469 self.buffer.read(cx).replica_id()
470 }
471
472 pub fn buffer(&self) -> &ModelHandle<Buffer> {
473 &self.buffer
474 }
475
476 pub fn snapshot(&mut self, cx: &mut MutableAppContext) -> Snapshot {
477 Snapshot {
478 mode: self.mode,
479 display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
480 scroll_position: self.scroll_position,
481 scroll_top_anchor: self.scroll_top_anchor.clone(),
482 placeholder_text: self.placeholder_text.clone(),
483 is_focused: self
484 .handle
485 .upgrade(cx)
486 .map_or(false, |handle| handle.is_focused(cx)),
487 }
488 }
489
490 pub fn language<'a>(&self, cx: &'a AppContext) -> Option<&'a Arc<Language>> {
491 self.buffer.read(cx).language()
492 }
493
494 pub fn set_placeholder_text(
495 &mut self,
496 placeholder_text: impl Into<Arc<str>>,
497 cx: &mut ViewContext<Self>,
498 ) {
499 self.placeholder_text = Some(placeholder_text.into());
500 cx.notify();
501 }
502
503 fn set_scroll_position(&mut self, scroll_position: Vector2F, cx: &mut ViewContext<Self>) {
504 let map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
505 let scroll_top_buffer_offset =
506 DisplayPoint::new(scroll_position.y() as u32, 0).to_offset(&map, Bias::Right);
507 self.scroll_top_anchor = self
508 .buffer
509 .read(cx)
510 .anchor_at(scroll_top_buffer_offset, Bias::Right);
511 self.scroll_position = vec2f(
512 scroll_position.x(),
513 scroll_position.y() - self.scroll_top_anchor.to_display_point(&map).row() as f32,
514 );
515
516 debug_assert_eq!(
517 compute_scroll_position(&map, self.scroll_position, &self.scroll_top_anchor),
518 scroll_position
519 );
520
521 cx.notify();
522 }
523
524 pub fn clamp_scroll_left(&mut self, max: f32) -> bool {
525 if max < self.scroll_position.x() {
526 self.scroll_position.set_x(max);
527 true
528 } else {
529 false
530 }
531 }
532
533 pub fn autoscroll_vertically(
534 &mut self,
535 viewport_height: f32,
536 line_height: f32,
537 cx: &mut ViewContext<Self>,
538 ) -> bool {
539 let visible_lines = viewport_height / line_height;
540 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
541 let mut scroll_position =
542 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor);
543 let max_scroll_top = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
544 (display_map.max_point().row() as f32 - visible_lines + 1.).max(0.)
545 } else {
546 display_map.max_point().row().saturating_sub(1) as f32
547 };
548 if scroll_position.y() > max_scroll_top {
549 scroll_position.set_y(max_scroll_top);
550 self.set_scroll_position(scroll_position, cx);
551 }
552
553 if self.autoscroll_requested {
554 self.autoscroll_requested = false;
555 } else {
556 return false;
557 }
558
559 let mut selections = self.selections::<Point>(cx).peekable();
560 let first_cursor_top = selections
561 .peek()
562 .unwrap()
563 .head()
564 .to_display_point(&display_map)
565 .row() as f32;
566 let last_cursor_bottom = selections
567 .last()
568 .unwrap()
569 .head()
570 .to_display_point(&display_map)
571 .row() as f32
572 + 1.0;
573
574 let margin = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
575 0.
576 } else {
577 ((visible_lines - (last_cursor_bottom - first_cursor_top)) / 2.0)
578 .floor()
579 .min(3.0)
580 };
581 if margin < 0.0 {
582 return false;
583 }
584
585 let target_top = (first_cursor_top - margin).max(0.0);
586 let target_bottom = last_cursor_bottom + margin;
587 let start_row = scroll_position.y();
588 let end_row = start_row + visible_lines;
589
590 if target_top < start_row {
591 scroll_position.set_y(target_top);
592 self.set_scroll_position(scroll_position, cx);
593 } else if target_bottom >= end_row {
594 scroll_position.set_y(target_bottom - visible_lines);
595 self.set_scroll_position(scroll_position, cx);
596 }
597
598 true
599 }
600
601 pub fn autoscroll_horizontally(
602 &mut self,
603 start_row: u32,
604 viewport_width: f32,
605 scroll_width: f32,
606 max_glyph_width: f32,
607 layouts: &[text_layout::Line],
608 cx: &mut ViewContext<Self>,
609 ) -> bool {
610 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
611 let selections = self.selections::<Point>(cx);
612 let mut target_left = std::f32::INFINITY;
613 let mut target_right = 0.0_f32;
614 for selection in selections {
615 let head = selection.head().to_display_point(&display_map);
616 let start_column = head.column().saturating_sub(3);
617 let end_column = cmp::min(display_map.line_len(head.row()), head.column() + 3);
618 target_left = target_left
619 .min(layouts[(head.row() - start_row) as usize].x_for_index(start_column as usize));
620 target_right = target_right.max(
621 layouts[(head.row() - start_row) as usize].x_for_index(end_column as usize)
622 + max_glyph_width,
623 );
624 }
625 target_right = target_right.min(scroll_width);
626
627 if target_right - target_left > viewport_width {
628 return false;
629 }
630
631 let scroll_left = self.scroll_position.x() * max_glyph_width;
632 let scroll_right = scroll_left + viewport_width;
633
634 if target_left < scroll_left {
635 self.scroll_position.set_x(target_left / max_glyph_width);
636 true
637 } else if target_right > scroll_right {
638 self.scroll_position
639 .set_x((target_right - viewport_width) / max_glyph_width);
640 true
641 } else {
642 false
643 }
644 }
645
646 fn select(&mut self, Select(phase): &Select, cx: &mut ViewContext<Self>) {
647 match phase {
648 SelectPhase::Begin {
649 position,
650 add,
651 click_count,
652 } => self.begin_selection(*position, *add, *click_count, cx),
653 SelectPhase::Extend {
654 position,
655 click_count,
656 } => self.extend_selection(*position, *click_count, cx),
657 SelectPhase::Update {
658 position,
659 scroll_position,
660 } => self.update_selection(*position, *scroll_position, cx),
661 SelectPhase::End => self.end_selection(cx),
662 }
663 }
664
665 fn extend_selection(
666 &mut self,
667 position: DisplayPoint,
668 click_count: usize,
669 cx: &mut ViewContext<Self>,
670 ) {
671 let tail = self.newest_selection::<usize>(cx).tail();
672
673 self.begin_selection(position, false, click_count, cx);
674
675 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
676 let buffer = self.buffer.read(cx);
677 let position = position.to_offset(&display_map, Bias::Left);
678 let tail_anchor = buffer.anchor_before(tail);
679 let pending = self.pending_selection.as_mut().unwrap();
680
681 if position >= tail {
682 pending.selection.start = tail_anchor.clone();
683 } else {
684 pending.selection.end = tail_anchor.clone();
685 pending.selection.reversed = true;
686 }
687
688 match &mut pending.mode {
689 SelectMode::Word(range) | SelectMode::Line(range) => {
690 *range = tail_anchor.clone()..tail_anchor
691 }
692 _ => {}
693 }
694 }
695
696 fn begin_selection(
697 &mut self,
698 position: DisplayPoint,
699 add: bool,
700 click_count: usize,
701 cx: &mut ViewContext<Self>,
702 ) {
703 if !self.focused {
704 cx.focus_self();
705 cx.emit(Event::Activate);
706 }
707
708 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
709 let buffer = self.buffer.read(cx);
710 let start;
711 let end;
712 let mode;
713 match click_count {
714 1 => {
715 start = buffer.anchor_before(position.to_point(&display_map));
716 end = start.clone();
717 mode = SelectMode::Character;
718 }
719 2 => {
720 let range = movement::surrounding_word(&display_map, position);
721 start = buffer.anchor_before(range.start.to_point(&display_map));
722 end = buffer.anchor_before(range.end.to_point(&display_map));
723 mode = SelectMode::Word(start.clone()..end.clone());
724 }
725 3 => {
726 let position = display_map.clip_point(position, Bias::Left);
727 let line_start = movement::line_beginning(&display_map, position, false);
728 let mut next_line_start = line_start.clone();
729 *next_line_start.row_mut() += 1;
730 *next_line_start.column_mut() = 0;
731 next_line_start = display_map.clip_point(next_line_start, Bias::Right);
732
733 start = buffer.anchor_before(line_start.to_point(&display_map));
734 end = buffer.anchor_before(next_line_start.to_point(&display_map));
735 mode = SelectMode::Line(start.clone()..end.clone());
736 }
737 _ => {
738 start = buffer.anchor_before(0);
739 end = buffer.anchor_before(buffer.len());
740 mode = SelectMode::All;
741 }
742 }
743
744 let selection = Selection {
745 id: post_inc(&mut self.next_selection_id),
746 start,
747 end,
748 reversed: false,
749 goal: SelectionGoal::None,
750 };
751
752 if !add {
753 self.update_selections::<usize>(Vec::new(), false, cx);
754 }
755
756 self.pending_selection = Some(PendingSelection { selection, mode });
757
758 cx.notify();
759 }
760
761 fn update_selection(
762 &mut self,
763 position: DisplayPoint,
764 scroll_position: Vector2F,
765 cx: &mut ViewContext<Self>,
766 ) {
767 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
768 if let Some(PendingSelection { selection, mode }) = self.pending_selection.as_mut() {
769 let buffer = self.buffer.read(cx);
770 let head;
771 let tail;
772 match mode {
773 SelectMode::Character => {
774 head = position.to_point(&display_map);
775 tail = selection.tail().to_point(buffer);
776 }
777 SelectMode::Word(original_range) => {
778 let original_display_range = original_range.start.to_display_point(&display_map)
779 ..original_range.end.to_display_point(&display_map);
780 let original_buffer_range = original_display_range.start.to_point(&display_map)
781 ..original_display_range.end.to_point(&display_map);
782 if movement::is_inside_word(&display_map, position)
783 || original_display_range.contains(&position)
784 {
785 let word_range = movement::surrounding_word(&display_map, position);
786 if word_range.start < original_display_range.start {
787 head = word_range.start.to_point(&display_map);
788 } else {
789 head = word_range.end.to_point(&display_map);
790 }
791 } else {
792 head = position.to_point(&display_map);
793 }
794
795 if head <= original_buffer_range.start {
796 tail = original_buffer_range.end;
797 } else {
798 tail = original_buffer_range.start;
799 }
800 }
801 SelectMode::Line(original_range) => {
802 let original_display_range = original_range.start.to_display_point(&display_map)
803 ..original_range.end.to_display_point(&display_map);
804 let original_buffer_range = original_display_range.start.to_point(&display_map)
805 ..original_display_range.end.to_point(&display_map);
806 let line_start = movement::line_beginning(&display_map, position, false);
807 let mut next_line_start = line_start.clone();
808 *next_line_start.row_mut() += 1;
809 *next_line_start.column_mut() = 0;
810 next_line_start = display_map.clip_point(next_line_start, Bias::Right);
811
812 if line_start < original_display_range.start {
813 head = line_start.to_point(&display_map);
814 } else {
815 head = next_line_start.to_point(&display_map);
816 }
817
818 if head <= original_buffer_range.start {
819 tail = original_buffer_range.end;
820 } else {
821 tail = original_buffer_range.start;
822 }
823 }
824 SelectMode::All => {
825 return;
826 }
827 };
828
829 if head < tail {
830 selection.start = buffer.anchor_before(head);
831 selection.end = buffer.anchor_before(tail);
832 selection.reversed = true;
833 } else {
834 selection.start = buffer.anchor_before(tail);
835 selection.end = buffer.anchor_before(head);
836 selection.reversed = false;
837 }
838 } else {
839 log::error!("update_selection dispatched with no pending selection");
840 return;
841 }
842
843 self.set_scroll_position(scroll_position, cx);
844 cx.notify();
845 }
846
847 fn end_selection(&mut self, cx: &mut ViewContext<Self>) {
848 if self.pending_selection.is_some() {
849 let selections = self.selections::<usize>(cx).collect::<Vec<_>>();
850 self.update_selections(selections, false, cx);
851 }
852 }
853
854 pub fn is_selecting(&self) -> bool {
855 self.pending_selection.is_some()
856 }
857
858 pub fn cancel(&mut self, _: &Cancel, cx: &mut ViewContext<Self>) {
859 if self.active_diagnostics.is_some() {
860 self.dismiss_diagnostics(cx);
861 } else if let Some(PendingSelection { selection, .. }) = self.pending_selection.take() {
862 let buffer = self.buffer.read(cx);
863 let selection = Selection {
864 id: selection.id,
865 start: selection.start.to_point(buffer),
866 end: selection.end.to_point(buffer),
867 reversed: selection.reversed,
868 goal: selection.goal,
869 };
870 if self.selections::<Point>(cx).next().is_none() {
871 self.update_selections(vec![selection], true, cx);
872 }
873 } else {
874 let mut oldest_selection = self.oldest_selection::<usize>(cx);
875 if self.selection_count(cx) == 1 {
876 oldest_selection.start = oldest_selection.head().clone();
877 oldest_selection.end = oldest_selection.head().clone();
878 }
879 self.update_selections(vec![oldest_selection], true, cx);
880 }
881 }
882
883 fn select_ranges<I, T>(&mut self, ranges: I, autoscroll: bool, cx: &mut ViewContext<Self>)
884 where
885 I: IntoIterator<Item = Range<T>>,
886 T: ToOffset,
887 {
888 let buffer = self.buffer.read(cx);
889 let selections = ranges
890 .into_iter()
891 .map(|range| {
892 let mut start = range.start.to_offset(buffer);
893 let mut end = range.end.to_offset(buffer);
894 let reversed = if start > end {
895 mem::swap(&mut start, &mut end);
896 true
897 } else {
898 false
899 };
900 Selection {
901 id: post_inc(&mut self.next_selection_id),
902 start: start,
903 end: end,
904 reversed,
905 goal: SelectionGoal::None,
906 }
907 })
908 .collect();
909 self.update_selections(selections, autoscroll, cx);
910 }
911
912 #[cfg(test)]
913 fn select_display_ranges<'a, T>(
914 &mut self,
915 ranges: T,
916 cx: &mut ViewContext<Self>,
917 ) -> anyhow::Result<()>
918 where
919 T: IntoIterator<Item = &'a Range<DisplayPoint>>,
920 {
921 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
922 let selections = ranges
923 .into_iter()
924 .map(|range| {
925 let mut start = range.start;
926 let mut end = range.end;
927 let reversed = if start > end {
928 mem::swap(&mut start, &mut end);
929 true
930 } else {
931 false
932 };
933 Selection {
934 id: post_inc(&mut self.next_selection_id),
935 start: start.to_point(&display_map),
936 end: end.to_point(&display_map),
937 reversed,
938 goal: SelectionGoal::None,
939 }
940 })
941 .collect();
942 self.update_selections(selections, false, cx);
943 Ok(())
944 }
945
946 pub fn handle_input(&mut self, action: &Input, cx: &mut ViewContext<Self>) {
947 let text = action.0.as_ref();
948 if !self.skip_autoclose_end(text, cx) {
949 self.start_transaction(cx);
950 self.insert(text, cx);
951 self.autoclose_pairs(cx);
952 self.end_transaction(cx);
953 }
954 }
955
956 pub fn newline(&mut self, _: &Newline, cx: &mut ViewContext<Self>) {
957 self.start_transaction(cx);
958 let mut old_selections = SmallVec::<[_; 32]>::new();
959 {
960 let selections = self.selections::<Point>(cx).collect::<Vec<_>>();
961 let buffer = self.buffer.read(cx);
962 for selection in selections.iter() {
963 let start_point = selection.start;
964 let indent = buffer
965 .indent_column_for_line(start_point.row)
966 .min(start_point.column);
967 let start = selection.start.to_offset(buffer);
968 let end = selection.end.to_offset(buffer);
969
970 let mut insert_extra_newline = false;
971 if let Some(language) = buffer.language() {
972 let leading_whitespace_len = buffer
973 .reversed_chars_at(start)
974 .take_while(|c| c.is_whitespace() && *c != '\n')
975 .map(|c| c.len_utf8())
976 .sum::<usize>();
977
978 let trailing_whitespace_len = buffer
979 .chars_at(end)
980 .take_while(|c| c.is_whitespace() && *c != '\n')
981 .map(|c| c.len_utf8())
982 .sum::<usize>();
983
984 insert_extra_newline = language.brackets().iter().any(|pair| {
985 let pair_start = pair.start.trim_end();
986 let pair_end = pair.end.trim_start();
987
988 pair.newline
989 && buffer.contains_str_at(end + trailing_whitespace_len, pair_end)
990 && buffer.contains_str_at(
991 (start - leading_whitespace_len).saturating_sub(pair_start.len()),
992 pair_start,
993 )
994 });
995 }
996
997 old_selections.push((selection.id, start..end, indent, insert_extra_newline));
998 }
999 }
1000
1001 let mut new_selections = Vec::with_capacity(old_selections.len());
1002 self.buffer.update(cx, |buffer, cx| {
1003 let mut delta = 0_isize;
1004 let mut pending_edit: Option<PendingEdit> = None;
1005 for (_, range, indent, insert_extra_newline) in &old_selections {
1006 if pending_edit.as_ref().map_or(false, |pending| {
1007 pending.indent != *indent
1008 || pending.insert_extra_newline != *insert_extra_newline
1009 }) {
1010 let pending = pending_edit.take().unwrap();
1011 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1012 new_text.push('\n');
1013 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1014 if pending.insert_extra_newline {
1015 new_text = new_text.repeat(2);
1016 }
1017 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1018 delta += pending.delta;
1019 }
1020
1021 let start = (range.start as isize + delta) as usize;
1022 let end = (range.end as isize + delta) as usize;
1023 let mut text_len = *indent as usize + 1;
1024 if *insert_extra_newline {
1025 text_len *= 2;
1026 }
1027
1028 let pending = pending_edit.get_or_insert_with(Default::default);
1029 pending.delta += text_len as isize - (end - start) as isize;
1030 pending.indent = *indent;
1031 pending.insert_extra_newline = *insert_extra_newline;
1032 pending.ranges.push(start..end);
1033 }
1034
1035 let pending = pending_edit.unwrap();
1036 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1037 new_text.push('\n');
1038 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1039 if pending.insert_extra_newline {
1040 new_text = new_text.repeat(2);
1041 }
1042 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1043
1044 let mut delta = 0_isize;
1045 new_selections.extend(old_selections.into_iter().map(
1046 |(id, range, indent, insert_extra_newline)| {
1047 let start = (range.start as isize + delta) as usize;
1048 let end = (range.end as isize + delta) as usize;
1049 let text_before_cursor_len = indent as usize + 1;
1050 let cursor = start + text_before_cursor_len;
1051 let text_len = if insert_extra_newline {
1052 text_before_cursor_len * 2
1053 } else {
1054 text_before_cursor_len
1055 };
1056 delta += text_len as isize - (end - start) as isize;
1057 Selection {
1058 id,
1059 start: cursor,
1060 end: cursor,
1061 reversed: false,
1062 goal: SelectionGoal::None,
1063 }
1064 },
1065 ))
1066 });
1067
1068 self.update_selections(new_selections, true, cx);
1069 self.end_transaction(cx);
1070
1071 #[derive(Default)]
1072 struct PendingEdit {
1073 indent: u32,
1074 insert_extra_newline: bool,
1075 delta: isize,
1076 ranges: SmallVec<[Range<usize>; 32]>,
1077 }
1078 }
1079
1080 fn insert(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1081 self.start_transaction(cx);
1082 let old_selections = self.selections::<usize>(cx).collect::<SmallVec<[_; 32]>>();
1083 let mut new_selections = Vec::new();
1084 self.buffer.update(cx, |buffer, cx| {
1085 let edit_ranges = old_selections.iter().map(|s| s.start..s.end);
1086 buffer.edit_with_autoindent(edit_ranges, text, cx);
1087 let text_len = text.len() as isize;
1088 let mut delta = 0_isize;
1089 new_selections = old_selections
1090 .into_iter()
1091 .map(|selection| {
1092 let start = selection.start as isize;
1093 let end = selection.end as isize;
1094 let cursor = (start + delta + text_len) as usize;
1095 let deleted_count = end - start;
1096 delta += text_len - deleted_count;
1097 Selection {
1098 id: selection.id,
1099 start: cursor,
1100 end: cursor,
1101 reversed: false,
1102 goal: SelectionGoal::None,
1103 }
1104 })
1105 .collect();
1106 });
1107
1108 self.update_selections(new_selections, true, cx);
1109 self.end_transaction(cx);
1110 }
1111
1112 fn autoclose_pairs(&mut self, cx: &mut ViewContext<Self>) {
1113 let selections = self.selections::<usize>(cx).collect::<Vec<_>>();
1114 let new_autoclose_pair_state = self.buffer.update(cx, |buffer, cx| {
1115 let autoclose_pair = buffer.language().and_then(|language| {
1116 let first_selection_start = selections.first().unwrap().start;
1117 let pair = language.brackets().iter().find(|pair| {
1118 buffer.contains_str_at(
1119 first_selection_start.saturating_sub(pair.start.len()),
1120 &pair.start,
1121 )
1122 });
1123 pair.and_then(|pair| {
1124 let should_autoclose = selections[1..].iter().all(|selection| {
1125 buffer.contains_str_at(
1126 selection.start.saturating_sub(pair.start.len()),
1127 &pair.start,
1128 )
1129 });
1130
1131 if should_autoclose {
1132 Some(pair.clone())
1133 } else {
1134 None
1135 }
1136 })
1137 });
1138
1139 autoclose_pair.and_then(|pair| {
1140 let selection_ranges = selections
1141 .iter()
1142 .map(|selection| {
1143 let start = selection.start.to_offset(&*buffer);
1144 start..start
1145 })
1146 .collect::<SmallVec<[_; 32]>>();
1147
1148 buffer.edit(selection_ranges, &pair.end, cx);
1149
1150 if pair.end.len() == 1 {
1151 let mut delta = 0;
1152 Some(BracketPairState {
1153 ranges: buffer.anchor_range_set(
1154 Bias::Left,
1155 Bias::Right,
1156 selections.iter().map(move |selection| {
1157 let offset = selection.start + delta;
1158 delta += 1;
1159 offset..offset
1160 }),
1161 ),
1162 pair,
1163 })
1164 } else {
1165 None
1166 }
1167 })
1168 });
1169 self.autoclose_stack.extend(new_autoclose_pair_state);
1170 }
1171
1172 fn skip_autoclose_end(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
1173 let old_selections = self.selections::<usize>(cx).collect::<Vec<_>>();
1174 let autoclose_pair_state = if let Some(autoclose_pair_state) = self.autoclose_stack.last() {
1175 autoclose_pair_state
1176 } else {
1177 return false;
1178 };
1179 if text != autoclose_pair_state.pair.end {
1180 return false;
1181 }
1182
1183 debug_assert_eq!(old_selections.len(), autoclose_pair_state.ranges.len());
1184
1185 let buffer = self.buffer.read(cx);
1186 if old_selections
1187 .iter()
1188 .zip(autoclose_pair_state.ranges.ranges::<usize, _>(buffer))
1189 .all(|(selection, autoclose_range)| {
1190 let autoclose_range_end = autoclose_range.end.to_offset(buffer);
1191 selection.is_empty() && selection.start == autoclose_range_end
1192 })
1193 {
1194 let new_selections = old_selections
1195 .into_iter()
1196 .map(|selection| {
1197 let cursor = selection.start + 1;
1198 Selection {
1199 id: selection.id,
1200 start: cursor,
1201 end: cursor,
1202 reversed: false,
1203 goal: SelectionGoal::None,
1204 }
1205 })
1206 .collect();
1207 self.autoclose_stack.pop();
1208 self.update_selections(new_selections, true, cx);
1209 true
1210 } else {
1211 false
1212 }
1213 }
1214
1215 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
1216 self.start_transaction(cx);
1217 self.select_all(&SelectAll, cx);
1218 self.insert("", cx);
1219 self.end_transaction(cx);
1220 }
1221
1222 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
1223 self.start_transaction(cx);
1224 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1225 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1226 for selection in &mut selections {
1227 if selection.is_empty() {
1228 let head = selection.head().to_display_point(&display_map);
1229 let cursor = movement::left(&display_map, head)
1230 .unwrap()
1231 .to_point(&display_map);
1232 selection.set_head(cursor);
1233 selection.goal = SelectionGoal::None;
1234 }
1235 }
1236 self.update_selections(selections, true, cx);
1237 self.insert("", cx);
1238 self.end_transaction(cx);
1239 }
1240
1241 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
1242 self.start_transaction(cx);
1243 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1244 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1245 for selection in &mut selections {
1246 if selection.is_empty() {
1247 let head = selection.head().to_display_point(&display_map);
1248 let cursor = movement::right(&display_map, head)
1249 .unwrap()
1250 .to_point(&display_map);
1251 selection.set_head(cursor);
1252 selection.goal = SelectionGoal::None;
1253 }
1254 }
1255 self.update_selections(selections, true, cx);
1256 self.insert(&"", cx);
1257 self.end_transaction(cx);
1258 }
1259
1260 pub fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
1261 self.start_transaction(cx);
1262 let tab_size = self.build_settings.borrow()(cx).tab_size;
1263 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1264 self.buffer.update(cx, |buffer, cx| {
1265 let mut last_indented_row = None;
1266 for selection in &mut selections {
1267 if selection.is_empty() {
1268 let char_column = buffer
1269 .chars_for_range(Point::new(selection.start.row, 0)..selection.start)
1270 .count();
1271 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
1272 buffer.edit(
1273 [selection.start..selection.start],
1274 " ".repeat(chars_to_next_tab_stop),
1275 cx,
1276 );
1277 selection.start.column += chars_to_next_tab_stop as u32;
1278 selection.end = selection.start;
1279 } else {
1280 for row in selection.start.row..=selection.end.row {
1281 if last_indented_row != Some(row) {
1282 let char_column = buffer.indent_column_for_line(row) as usize;
1283 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
1284 let row_start = Point::new(row, 0);
1285 buffer.edit(
1286 [row_start..row_start],
1287 " ".repeat(chars_to_next_tab_stop),
1288 cx,
1289 );
1290 last_indented_row = Some(row);
1291 }
1292 }
1293 }
1294 }
1295 });
1296
1297 self.update_selections(selections, true, cx);
1298 self.end_transaction(cx);
1299 }
1300
1301 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
1302 self.start_transaction(cx);
1303
1304 let selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1305 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1306 let buffer = self.buffer.read(cx);
1307
1308 let mut row_delta = 0;
1309 let mut new_cursors = Vec::new();
1310 let mut edit_ranges = Vec::new();
1311 let mut selections = selections.iter().peekable();
1312 while let Some(selection) = selections.next() {
1313 let mut rows = selection.spanned_rows(false, &display_map).buffer_rows;
1314 let goal_display_column = selection.head().to_display_point(&display_map).column();
1315
1316 // Accumulate contiguous regions of rows that we want to delete.
1317 while let Some(next_selection) = selections.peek() {
1318 let next_rows = next_selection.spanned_rows(false, &display_map).buffer_rows;
1319 if next_rows.start <= rows.end {
1320 rows.end = next_rows.end;
1321 selections.next().unwrap();
1322 } else {
1323 break;
1324 }
1325 }
1326
1327 let mut edit_start = Point::new(rows.start, 0).to_offset(buffer);
1328 let edit_end;
1329 let cursor_buffer_row;
1330 if buffer.max_point().row >= rows.end {
1331 // If there's a line after the range, delete the \n from the end of the row range
1332 // and position the cursor on the next line.
1333 edit_end = Point::new(rows.end, 0).to_offset(buffer);
1334 cursor_buffer_row = rows.start;
1335 } else {
1336 // If there isn't a line after the range, delete the \n from the line before the
1337 // start of the row range and position the cursor there.
1338 edit_start = edit_start.saturating_sub(1);
1339 edit_end = buffer.len();
1340 cursor_buffer_row = rows.start.saturating_sub(1);
1341 }
1342
1343 let mut cursor =
1344 Point::new(cursor_buffer_row - row_delta, 0).to_display_point(&display_map);
1345 *cursor.column_mut() =
1346 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
1347 row_delta += rows.len() as u32;
1348
1349 new_cursors.push((selection.id, cursor.to_point(&display_map)));
1350 edit_ranges.push(edit_start..edit_end);
1351 }
1352
1353 new_cursors.sort_unstable_by_key(|(_, point)| point.clone());
1354 let new_selections = new_cursors
1355 .into_iter()
1356 .map(|(id, cursor)| Selection {
1357 id,
1358 start: cursor,
1359 end: cursor,
1360 reversed: false,
1361 goal: SelectionGoal::None,
1362 })
1363 .collect();
1364 self.buffer
1365 .update(cx, |buffer, cx| buffer.edit(edit_ranges, "", cx));
1366 self.update_selections(new_selections, true, cx);
1367 self.end_transaction(cx);
1368 }
1369
1370 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
1371 self.start_transaction(cx);
1372
1373 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1374 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1375 let buffer = self.buffer.read(cx);
1376
1377 let mut edits = Vec::new();
1378 let mut selections_iter = selections.iter().peekable();
1379 while let Some(selection) = selections_iter.next() {
1380 // Avoid duplicating the same lines twice.
1381 let mut rows = selection.spanned_rows(false, &display_map).buffer_rows;
1382
1383 while let Some(next_selection) = selections_iter.peek() {
1384 let next_rows = next_selection.spanned_rows(false, &display_map).buffer_rows;
1385 if next_rows.start <= rows.end - 1 {
1386 rows.end = next_rows.end;
1387 selections_iter.next().unwrap();
1388 } else {
1389 break;
1390 }
1391 }
1392
1393 // Copy the text from the selected row region and splice it at the start of the region.
1394 let start = Point::new(rows.start, 0);
1395 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
1396 let text = buffer
1397 .text_for_range(start..end)
1398 .chain(Some("\n"))
1399 .collect::<String>();
1400 edits.push((start, text, rows.len() as u32));
1401 }
1402
1403 let mut edits_iter = edits.iter().peekable();
1404 let mut row_delta = 0;
1405 for selection in selections.iter_mut() {
1406 while let Some((point, _, line_count)) = edits_iter.peek() {
1407 if *point <= selection.start {
1408 row_delta += line_count;
1409 edits_iter.next();
1410 } else {
1411 break;
1412 }
1413 }
1414 selection.start.row += row_delta;
1415 selection.end.row += row_delta;
1416 }
1417
1418 self.buffer.update(cx, |buffer, cx| {
1419 for (point, text, _) in edits.into_iter().rev() {
1420 buffer.edit(Some(point..point), text, cx);
1421 }
1422 });
1423
1424 self.update_selections(selections, true, cx);
1425 self.end_transaction(cx);
1426 }
1427
1428 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
1429 self.start_transaction(cx);
1430
1431 let selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1432 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1433 let buffer = self.buffer.read(cx);
1434
1435 let mut edits = Vec::new();
1436 let mut new_selection_ranges = Vec::new();
1437 let mut old_folds = Vec::new();
1438 let mut new_folds = Vec::new();
1439
1440 let mut selections = selections.iter().peekable();
1441 let mut contiguous_selections = Vec::new();
1442 while let Some(selection) = selections.next() {
1443 // Accumulate contiguous regions of rows that we want to move.
1444 contiguous_selections.push(selection.point_range(buffer));
1445 let SpannedRows {
1446 mut buffer_rows,
1447 mut display_rows,
1448 } = selection.spanned_rows(false, &display_map);
1449
1450 while let Some(next_selection) = selections.peek() {
1451 let SpannedRows {
1452 buffer_rows: next_buffer_rows,
1453 display_rows: next_display_rows,
1454 } = next_selection.spanned_rows(false, &display_map);
1455 if next_buffer_rows.start <= buffer_rows.end {
1456 buffer_rows.end = next_buffer_rows.end;
1457 display_rows.end = next_display_rows.end;
1458 contiguous_selections.push(next_selection.point_range(buffer));
1459 selections.next().unwrap();
1460 } else {
1461 break;
1462 }
1463 }
1464
1465 // Cut the text from the selected rows and paste it at the start of the previous line.
1466 if display_rows.start != 0 {
1467 let start = Point::new(buffer_rows.start, 0).to_offset(buffer);
1468 let end = Point::new(buffer_rows.end - 1, buffer.line_len(buffer_rows.end - 1))
1469 .to_offset(buffer);
1470
1471 let prev_row_display_start = DisplayPoint::new(display_rows.start - 1, 0);
1472 let prev_row_buffer_start = display_map.prev_row_boundary(prev_row_display_start).1;
1473 let prev_row_buffer_start_offset = prev_row_buffer_start.to_offset(buffer);
1474
1475 let mut text = String::new();
1476 text.extend(buffer.text_for_range(start..end));
1477 text.push('\n');
1478 edits.push((
1479 prev_row_buffer_start_offset..prev_row_buffer_start_offset,
1480 text,
1481 ));
1482 edits.push((start - 1..end, String::new()));
1483
1484 let row_delta = buffer_rows.start - prev_row_buffer_start.row;
1485
1486 // Move selections up.
1487 for range in &mut contiguous_selections {
1488 range.start.row -= row_delta;
1489 range.end.row -= row_delta;
1490 }
1491
1492 // Move folds up.
1493 old_folds.push(start..end);
1494 for fold in display_map.folds_in_range(start..end) {
1495 let mut start = fold.start.to_point(buffer);
1496 let mut end = fold.end.to_point(buffer);
1497 start.row -= row_delta;
1498 end.row -= row_delta;
1499 new_folds.push(start..end);
1500 }
1501 }
1502
1503 new_selection_ranges.extend(contiguous_selections.drain(..));
1504 }
1505
1506 self.unfold_ranges(old_folds, cx);
1507 self.buffer.update(cx, |buffer, cx| {
1508 for (range, text) in edits.into_iter().rev() {
1509 buffer.edit(Some(range), text, cx);
1510 }
1511 });
1512 self.fold_ranges(new_folds, cx);
1513 self.select_ranges(new_selection_ranges, true, cx);
1514
1515 self.end_transaction(cx);
1516 }
1517
1518 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
1519 self.start_transaction(cx);
1520
1521 let selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1522 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1523 let buffer = self.buffer.read(cx);
1524
1525 let mut edits = Vec::new();
1526 let mut new_selection_ranges = Vec::new();
1527 let mut old_folds = Vec::new();
1528 let mut new_folds = Vec::new();
1529
1530 let mut selections = selections.iter().peekable();
1531 let mut contiguous_selections = Vec::new();
1532 while let Some(selection) = selections.next() {
1533 // Accumulate contiguous regions of rows that we want to move.
1534 contiguous_selections.push(selection.point_range(buffer));
1535 let SpannedRows {
1536 mut buffer_rows,
1537 mut display_rows,
1538 } = selection.spanned_rows(false, &display_map);
1539 while let Some(next_selection) = selections.peek() {
1540 let SpannedRows {
1541 buffer_rows: next_buffer_rows,
1542 display_rows: next_display_rows,
1543 } = next_selection.spanned_rows(false, &display_map);
1544 if next_buffer_rows.start <= buffer_rows.end {
1545 buffer_rows.end = next_buffer_rows.end;
1546 display_rows.end = next_display_rows.end;
1547 contiguous_selections.push(next_selection.point_range(buffer));
1548 selections.next().unwrap();
1549 } else {
1550 break;
1551 }
1552 }
1553
1554 // Cut the text from the selected rows and paste it at the end of the next line.
1555 if display_rows.end <= display_map.max_point().row() {
1556 let start = Point::new(buffer_rows.start, 0).to_offset(buffer);
1557 let end = Point::new(buffer_rows.end - 1, buffer.line_len(buffer_rows.end - 1))
1558 .to_offset(buffer);
1559
1560 let next_row_display_end =
1561 DisplayPoint::new(display_rows.end, display_map.line_len(display_rows.end));
1562 let next_row_buffer_end = display_map.next_row_boundary(next_row_display_end).1;
1563 let next_row_buffer_end_offset = next_row_buffer_end.to_offset(buffer);
1564
1565 let mut text = String::new();
1566 text.push('\n');
1567 text.extend(buffer.text_for_range(start..end));
1568 edits.push((start..end + 1, String::new()));
1569 edits.push((next_row_buffer_end_offset..next_row_buffer_end_offset, text));
1570
1571 let row_delta = next_row_buffer_end.row - buffer_rows.end + 1;
1572
1573 // Move selections down.
1574 for range in &mut contiguous_selections {
1575 range.start.row += row_delta;
1576 range.end.row += row_delta;
1577 }
1578
1579 // Move folds down.
1580 old_folds.push(start..end);
1581 for fold in display_map.folds_in_range(start..end) {
1582 let mut start = fold.start.to_point(buffer);
1583 let mut end = fold.end.to_point(buffer);
1584 start.row += row_delta;
1585 end.row += row_delta;
1586 new_folds.push(start..end);
1587 }
1588 }
1589
1590 new_selection_ranges.extend(contiguous_selections.drain(..));
1591 }
1592
1593 self.unfold_ranges(old_folds, cx);
1594 self.buffer.update(cx, |buffer, cx| {
1595 for (range, text) in edits.into_iter().rev() {
1596 buffer.edit(Some(range), text, cx);
1597 }
1598 });
1599 self.fold_ranges(new_folds, cx);
1600 self.select_ranges(new_selection_ranges, true, cx);
1601
1602 self.end_transaction(cx);
1603 }
1604
1605 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
1606 self.start_transaction(cx);
1607 let mut text = String::new();
1608 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1609 let mut clipboard_selections = Vec::with_capacity(selections.len());
1610 {
1611 let buffer = self.buffer.read(cx);
1612 let max_point = buffer.max_point();
1613 for selection in &mut selections {
1614 let is_entire_line = selection.is_empty();
1615 if is_entire_line {
1616 selection.start = Point::new(selection.start.row, 0);
1617 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
1618 }
1619 let mut len = 0;
1620 for chunk in buffer.text_for_range(selection.start..selection.end) {
1621 text.push_str(chunk);
1622 len += chunk.len();
1623 }
1624 clipboard_selections.push(ClipboardSelection {
1625 len,
1626 is_entire_line,
1627 });
1628 }
1629 }
1630 self.update_selections(selections, true, cx);
1631 self.insert("", cx);
1632 self.end_transaction(cx);
1633
1634 cx.as_mut()
1635 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
1636 }
1637
1638 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
1639 let selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1640 let buffer = self.buffer.read(cx);
1641 let max_point = buffer.max_point();
1642 let mut text = String::new();
1643 let mut clipboard_selections = Vec::with_capacity(selections.len());
1644 for selection in selections.iter() {
1645 let mut start = selection.start;
1646 let mut end = selection.end;
1647 let is_entire_line = selection.is_empty();
1648 if is_entire_line {
1649 start = Point::new(start.row, 0);
1650 end = cmp::min(max_point, Point::new(start.row + 1, 0));
1651 }
1652 let mut len = 0;
1653 for chunk in buffer.text_for_range(start..end) {
1654 text.push_str(chunk);
1655 len += chunk.len();
1656 }
1657 clipboard_selections.push(ClipboardSelection {
1658 len,
1659 is_entire_line,
1660 });
1661 }
1662
1663 cx.as_mut()
1664 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
1665 }
1666
1667 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
1668 if let Some(item) = cx.as_mut().read_from_clipboard() {
1669 let clipboard_text = item.text();
1670 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
1671 let mut selections = self.selections::<usize>(cx).collect::<Vec<_>>();
1672 let all_selections_were_entire_line =
1673 clipboard_selections.iter().all(|s| s.is_entire_line);
1674 if clipboard_selections.len() != selections.len() {
1675 clipboard_selections.clear();
1676 }
1677
1678 let mut delta = 0_isize;
1679 let mut start_offset = 0;
1680 for (i, selection) in selections.iter_mut().enumerate() {
1681 let to_insert;
1682 let entire_line;
1683 if let Some(clipboard_selection) = clipboard_selections.get(i) {
1684 let end_offset = start_offset + clipboard_selection.len;
1685 to_insert = &clipboard_text[start_offset..end_offset];
1686 entire_line = clipboard_selection.is_entire_line;
1687 start_offset = end_offset
1688 } else {
1689 to_insert = clipboard_text.as_str();
1690 entire_line = all_selections_were_entire_line;
1691 }
1692
1693 selection.start = (selection.start as isize + delta) as usize;
1694 selection.end = (selection.end as isize + delta) as usize;
1695
1696 self.buffer.update(cx, |buffer, cx| {
1697 // If the corresponding selection was empty when this slice of the
1698 // clipboard text was written, then the entire line containing the
1699 // selection was copied. If this selection is also currently empty,
1700 // then paste the line before the current line of the buffer.
1701 let range = if selection.is_empty() && entire_line {
1702 let column = selection.start.to_point(&*buffer).column as usize;
1703 let line_start = selection.start - column;
1704 line_start..line_start
1705 } else {
1706 selection.start..selection.end
1707 };
1708
1709 delta += to_insert.len() as isize - range.len() as isize;
1710 buffer.edit([range], to_insert, cx);
1711 selection.start += to_insert.len();
1712 selection.end = selection.start;
1713 });
1714 }
1715 self.update_selections(selections, true, cx);
1716 } else {
1717 self.insert(clipboard_text, cx);
1718 }
1719 }
1720 }
1721
1722 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
1723 self.buffer.update(cx, |buffer, cx| buffer.undo(cx));
1724 self.request_autoscroll(cx);
1725 }
1726
1727 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
1728 self.buffer.update(cx, |buffer, cx| buffer.redo(cx));
1729 self.request_autoscroll(cx);
1730 }
1731
1732 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
1733 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1734 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1735 for selection in &mut selections {
1736 let start = selection.start.to_display_point(&display_map);
1737 let end = selection.end.to_display_point(&display_map);
1738
1739 if start != end {
1740 selection.end = selection.start.clone();
1741 } else {
1742 let cursor = movement::left(&display_map, start)
1743 .unwrap()
1744 .to_point(&display_map);
1745 selection.start = cursor.clone();
1746 selection.end = cursor;
1747 }
1748 selection.reversed = false;
1749 selection.goal = SelectionGoal::None;
1750 }
1751 self.update_selections(selections, true, cx);
1752 }
1753
1754 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
1755 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1756 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1757 for selection in &mut selections {
1758 let head = selection.head().to_display_point(&display_map);
1759 let cursor = movement::left(&display_map, head)
1760 .unwrap()
1761 .to_point(&display_map);
1762 selection.set_head(cursor);
1763 selection.goal = SelectionGoal::None;
1764 }
1765 self.update_selections(selections, true, cx);
1766 }
1767
1768 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
1769 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1770 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1771 for selection in &mut selections {
1772 let start = selection.start.to_display_point(&display_map);
1773 let end = selection.end.to_display_point(&display_map);
1774
1775 if start != end {
1776 selection.start = selection.end.clone();
1777 } else {
1778 let cursor = movement::right(&display_map, end)
1779 .unwrap()
1780 .to_point(&display_map);
1781 selection.start = cursor;
1782 selection.end = cursor;
1783 }
1784 selection.reversed = false;
1785 selection.goal = SelectionGoal::None;
1786 }
1787 self.update_selections(selections, true, cx);
1788 }
1789
1790 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
1791 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1792 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1793 for selection in &mut selections {
1794 let head = selection.head().to_display_point(&display_map);
1795 let cursor = movement::right(&display_map, head)
1796 .unwrap()
1797 .to_point(&display_map);
1798 selection.set_head(cursor);
1799 selection.goal = SelectionGoal::None;
1800 }
1801 self.update_selections(selections, true, cx);
1802 }
1803
1804 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
1805 if matches!(self.mode, EditorMode::SingleLine) {
1806 cx.propagate_action();
1807 return;
1808 }
1809
1810 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1811 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1812 for selection in &mut selections {
1813 let start = selection.start.to_display_point(&display_map);
1814 let end = selection.end.to_display_point(&display_map);
1815 if start != end {
1816 selection.goal = SelectionGoal::None;
1817 }
1818
1819 let (start, goal) = movement::up(&display_map, start, selection.goal).unwrap();
1820 let cursor = start.to_point(&display_map);
1821 selection.start = cursor;
1822 selection.end = cursor;
1823 selection.goal = goal;
1824 selection.reversed = false;
1825 }
1826 self.update_selections(selections, true, cx);
1827 }
1828
1829 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
1830 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1831 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1832 for selection in &mut selections {
1833 let head = selection.head().to_display_point(&display_map);
1834 let (head, goal) = movement::up(&display_map, head, selection.goal).unwrap();
1835 let cursor = head.to_point(&display_map);
1836 selection.set_head(cursor);
1837 selection.goal = goal;
1838 }
1839 self.update_selections(selections, true, cx);
1840 }
1841
1842 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
1843 if matches!(self.mode, EditorMode::SingleLine) {
1844 cx.propagate_action();
1845 return;
1846 }
1847
1848 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1849 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1850 for selection in &mut selections {
1851 let start = selection.start.to_display_point(&display_map);
1852 let end = selection.end.to_display_point(&display_map);
1853 if start != end {
1854 selection.goal = SelectionGoal::None;
1855 }
1856
1857 let (start, goal) = movement::down(&display_map, end, selection.goal).unwrap();
1858 let cursor = start.to_point(&display_map);
1859 selection.start = cursor;
1860 selection.end = cursor;
1861 selection.goal = goal;
1862 selection.reversed = false;
1863 }
1864 self.update_selections(selections, true, cx);
1865 }
1866
1867 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
1868 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1869 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1870 for selection in &mut selections {
1871 let head = selection.head().to_display_point(&display_map);
1872 let (head, goal) = movement::down(&display_map, head, selection.goal).unwrap();
1873 let cursor = head.to_point(&display_map);
1874 selection.set_head(cursor);
1875 selection.goal = goal;
1876 }
1877 self.update_selections(selections, true, cx);
1878 }
1879
1880 pub fn move_to_previous_word_boundary(
1881 &mut self,
1882 _: &MoveToPreviousWordBoundary,
1883 cx: &mut ViewContext<Self>,
1884 ) {
1885 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1886 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1887 for selection in &mut selections {
1888 let head = selection.head().to_display_point(&display_map);
1889 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
1890 selection.start = cursor.clone();
1891 selection.end = cursor;
1892 selection.reversed = false;
1893 selection.goal = SelectionGoal::None;
1894 }
1895 self.update_selections(selections, true, cx);
1896 }
1897
1898 pub fn select_to_previous_word_boundary(
1899 &mut self,
1900 _: &SelectToPreviousWordBoundary,
1901 cx: &mut ViewContext<Self>,
1902 ) {
1903 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1904 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1905 for selection in &mut selections {
1906 let head = selection.head().to_display_point(&display_map);
1907 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
1908 selection.set_head(cursor);
1909 selection.goal = SelectionGoal::None;
1910 }
1911 self.update_selections(selections, true, cx);
1912 }
1913
1914 pub fn delete_to_previous_word_boundary(
1915 &mut self,
1916 _: &DeleteToPreviousWordBoundary,
1917 cx: &mut ViewContext<Self>,
1918 ) {
1919 self.start_transaction(cx);
1920 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1921 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1922 for selection in &mut selections {
1923 if selection.is_empty() {
1924 let head = selection.head().to_display_point(&display_map);
1925 let cursor =
1926 movement::prev_word_boundary(&display_map, head).to_point(&display_map);
1927 selection.set_head(cursor);
1928 selection.goal = SelectionGoal::None;
1929 }
1930 }
1931 self.update_selections(selections, true, cx);
1932 self.insert("", cx);
1933 self.end_transaction(cx);
1934 }
1935
1936 pub fn move_to_next_word_boundary(
1937 &mut self,
1938 _: &MoveToNextWordBoundary,
1939 cx: &mut ViewContext<Self>,
1940 ) {
1941 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1942 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1943 for selection in &mut selections {
1944 let head = selection.head().to_display_point(&display_map);
1945 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
1946 selection.start = cursor;
1947 selection.end = cursor;
1948 selection.reversed = false;
1949 selection.goal = SelectionGoal::None;
1950 }
1951 self.update_selections(selections, true, cx);
1952 }
1953
1954 pub fn select_to_next_word_boundary(
1955 &mut self,
1956 _: &SelectToNextWordBoundary,
1957 cx: &mut ViewContext<Self>,
1958 ) {
1959 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1960 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1961 for selection in &mut selections {
1962 let head = selection.head().to_display_point(&display_map);
1963 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
1964 selection.set_head(cursor);
1965 selection.goal = SelectionGoal::None;
1966 }
1967 self.update_selections(selections, true, cx);
1968 }
1969
1970 pub fn delete_to_next_word_boundary(
1971 &mut self,
1972 _: &DeleteToNextWordBoundary,
1973 cx: &mut ViewContext<Self>,
1974 ) {
1975 self.start_transaction(cx);
1976 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1977 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1978 for selection in &mut selections {
1979 if selection.is_empty() {
1980 let head = selection.head().to_display_point(&display_map);
1981 let cursor =
1982 movement::next_word_boundary(&display_map, head).to_point(&display_map);
1983 selection.set_head(cursor);
1984 selection.goal = SelectionGoal::None;
1985 }
1986 }
1987 self.update_selections(selections, true, cx);
1988 self.insert("", cx);
1989 self.end_transaction(cx);
1990 }
1991
1992 pub fn move_to_beginning_of_line(
1993 &mut self,
1994 _: &MoveToBeginningOfLine,
1995 cx: &mut ViewContext<Self>,
1996 ) {
1997 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1998 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1999 for selection in &mut selections {
2000 let head = selection.head().to_display_point(&display_map);
2001 let new_head = movement::line_beginning(&display_map, head, true);
2002 let cursor = new_head.to_point(&display_map);
2003 selection.start = cursor;
2004 selection.end = cursor;
2005 selection.reversed = false;
2006 selection.goal = SelectionGoal::None;
2007 }
2008 self.update_selections(selections, true, cx);
2009 }
2010
2011 pub fn select_to_beginning_of_line(
2012 &mut self,
2013 SelectToBeginningOfLine(toggle_indent): &SelectToBeginningOfLine,
2014 cx: &mut ViewContext<Self>,
2015 ) {
2016 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2017 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
2018 for selection in &mut selections {
2019 let head = selection.head().to_display_point(&display_map);
2020 let new_head = movement::line_beginning(&display_map, head, *toggle_indent);
2021 selection.set_head(new_head.to_point(&display_map));
2022 selection.goal = SelectionGoal::None;
2023 }
2024 self.update_selections(selections, true, cx);
2025 }
2026
2027 pub fn delete_to_beginning_of_line(
2028 &mut self,
2029 _: &DeleteToBeginningOfLine,
2030 cx: &mut ViewContext<Self>,
2031 ) {
2032 self.start_transaction(cx);
2033 self.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
2034 self.backspace(&Backspace, cx);
2035 self.end_transaction(cx);
2036 }
2037
2038 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
2039 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2040 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
2041 {
2042 for selection in &mut selections {
2043 let head = selection.head().to_display_point(&display_map);
2044 let new_head = movement::line_end(&display_map, head);
2045 let anchor = new_head.to_point(&display_map);
2046 selection.start = anchor.clone();
2047 selection.end = anchor;
2048 selection.reversed = false;
2049 selection.goal = SelectionGoal::None;
2050 }
2051 }
2052 self.update_selections(selections, true, cx);
2053 }
2054
2055 pub fn select_to_end_of_line(&mut self, _: &SelectToEndOfLine, cx: &mut ViewContext<Self>) {
2056 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2057 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
2058 for selection in &mut selections {
2059 let head = selection.head().to_display_point(&display_map);
2060 let new_head = movement::line_end(&display_map, head);
2061 selection.set_head(new_head.to_point(&display_map));
2062 selection.goal = SelectionGoal::None;
2063 }
2064 self.update_selections(selections, true, cx);
2065 }
2066
2067 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
2068 self.start_transaction(cx);
2069 self.select_to_end_of_line(&SelectToEndOfLine, cx);
2070 self.delete(&Delete, cx);
2071 self.end_transaction(cx);
2072 }
2073
2074 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
2075 self.start_transaction(cx);
2076 self.select_to_end_of_line(&SelectToEndOfLine, cx);
2077 self.cut(&Cut, cx);
2078 self.end_transaction(cx);
2079 }
2080
2081 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
2082 let selection = Selection {
2083 id: post_inc(&mut self.next_selection_id),
2084 start: 0,
2085 end: 0,
2086 reversed: false,
2087 goal: SelectionGoal::None,
2088 };
2089 self.update_selections(vec![selection], true, cx);
2090 }
2091
2092 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
2093 let mut selection = self.selections::<Point>(cx).last().unwrap().clone();
2094 selection.set_head(Point::zero());
2095 self.update_selections(vec![selection], true, cx);
2096 }
2097
2098 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
2099 let buffer = self.buffer.read(cx);
2100 let cursor = buffer.len();
2101 let selection = Selection {
2102 id: post_inc(&mut self.next_selection_id),
2103 start: cursor,
2104 end: cursor,
2105 reversed: false,
2106 goal: SelectionGoal::None,
2107 };
2108 self.update_selections(vec![selection], true, cx);
2109 }
2110
2111 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
2112 let mut selection = self.selections::<usize>(cx).last().unwrap().clone();
2113 selection.set_head(self.buffer.read(cx).len());
2114 self.update_selections(vec![selection], true, cx);
2115 }
2116
2117 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
2118 let selection = Selection {
2119 id: post_inc(&mut self.next_selection_id),
2120 start: 0,
2121 end: self.buffer.read(cx).len(),
2122 reversed: false,
2123 goal: SelectionGoal::None,
2124 };
2125 self.update_selections(vec![selection], false, cx);
2126 }
2127
2128 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
2129 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2130 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
2131 let buffer = self.buffer.read(cx);
2132 let max_point = buffer.max_point();
2133 for selection in &mut selections {
2134 let rows = selection.spanned_rows(true, &display_map).buffer_rows;
2135 selection.start = Point::new(rows.start, 0);
2136 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
2137 selection.reversed = false;
2138 }
2139 self.update_selections(selections, true, cx);
2140 }
2141
2142 pub fn split_selection_into_lines(
2143 &mut self,
2144 _: &SplitSelectionIntoLines,
2145 cx: &mut ViewContext<Self>,
2146 ) {
2147 let selections = self.selections::<Point>(cx).collect::<Vec<_>>();
2148 let buffer = self.buffer.read(cx);
2149
2150 let mut to_unfold = Vec::new();
2151 let mut new_selections = Vec::new();
2152 for selection in selections.iter() {
2153 for row in selection.start.row..selection.end.row {
2154 let cursor = Point::new(row, buffer.line_len(row));
2155 new_selections.push(Selection {
2156 id: post_inc(&mut self.next_selection_id),
2157 start: cursor,
2158 end: cursor,
2159 reversed: false,
2160 goal: SelectionGoal::None,
2161 });
2162 }
2163 new_selections.push(Selection {
2164 id: selection.id,
2165 start: selection.end,
2166 end: selection.end,
2167 reversed: false,
2168 goal: SelectionGoal::None,
2169 });
2170 to_unfold.push(selection.start..selection.end);
2171 }
2172 self.unfold_ranges(to_unfold, cx);
2173 self.update_selections(new_selections, true, cx);
2174 }
2175
2176 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
2177 self.add_selection(true, cx);
2178 }
2179
2180 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
2181 self.add_selection(false, cx);
2182 }
2183
2184 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
2185 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2186 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
2187 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
2188 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
2189 let range = oldest_selection.display_range(&display_map).sorted();
2190 let columns = cmp::min(range.start.column(), range.end.column())
2191 ..cmp::max(range.start.column(), range.end.column());
2192
2193 selections.clear();
2194 let mut stack = Vec::new();
2195 for row in range.start.row()..=range.end.row() {
2196 if let Some(selection) = self.build_columnar_selection(
2197 &display_map,
2198 row,
2199 &columns,
2200 oldest_selection.reversed,
2201 ) {
2202 stack.push(selection.id);
2203 selections.push(selection);
2204 }
2205 }
2206
2207 if above {
2208 stack.reverse();
2209 }
2210
2211 AddSelectionsState { above, stack }
2212 });
2213
2214 let last_added_selection = *state.stack.last().unwrap();
2215 let mut new_selections = Vec::new();
2216 if above == state.above {
2217 let end_row = if above {
2218 0
2219 } else {
2220 display_map.max_point().row()
2221 };
2222
2223 'outer: for selection in selections {
2224 if selection.id == last_added_selection {
2225 let range = selection.display_range(&display_map).sorted();
2226 debug_assert_eq!(range.start.row(), range.end.row());
2227 let mut row = range.start.row();
2228 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
2229 {
2230 start..end
2231 } else {
2232 cmp::min(range.start.column(), range.end.column())
2233 ..cmp::max(range.start.column(), range.end.column())
2234 };
2235
2236 while row != end_row {
2237 if above {
2238 row -= 1;
2239 } else {
2240 row += 1;
2241 }
2242
2243 if let Some(new_selection) = self.build_columnar_selection(
2244 &display_map,
2245 row,
2246 &columns,
2247 selection.reversed,
2248 ) {
2249 state.stack.push(new_selection.id);
2250 if above {
2251 new_selections.push(new_selection);
2252 new_selections.push(selection);
2253 } else {
2254 new_selections.push(selection);
2255 new_selections.push(new_selection);
2256 }
2257
2258 continue 'outer;
2259 }
2260 }
2261 }
2262
2263 new_selections.push(selection);
2264 }
2265 } else {
2266 new_selections = selections;
2267 new_selections.retain(|s| s.id != last_added_selection);
2268 state.stack.pop();
2269 }
2270
2271 self.update_selections(new_selections, true, cx);
2272 if state.stack.len() > 1 {
2273 self.add_selections_state = Some(state);
2274 }
2275 }
2276
2277 pub fn select_larger_syntax_node(
2278 &mut self,
2279 _: &SelectLargerSyntaxNode,
2280 cx: &mut ViewContext<Self>,
2281 ) {
2282 let old_selections = self.selections::<usize>(cx).collect::<Box<_>>();
2283 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2284 let buffer = self.buffer.read(cx);
2285
2286 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
2287 let mut selected_larger_node = false;
2288 let mut new_selections = old_selections
2289 .iter()
2290 .map(|selection| {
2291 let old_range = selection.start..selection.end;
2292 let mut new_range = old_range.clone();
2293 while let Some(containing_range) =
2294 buffer.range_for_syntax_ancestor(new_range.clone())
2295 {
2296 new_range = containing_range;
2297 if !display_map.intersects_fold(new_range.start)
2298 && !display_map.intersects_fold(new_range.end)
2299 {
2300 break;
2301 }
2302 }
2303
2304 selected_larger_node |= new_range != old_range;
2305 Selection {
2306 id: selection.id,
2307 start: new_range.start,
2308 end: new_range.end,
2309 goal: SelectionGoal::None,
2310 reversed: selection.reversed,
2311 }
2312 })
2313 .collect::<Vec<_>>();
2314
2315 if selected_larger_node {
2316 stack.push(old_selections);
2317 new_selections.sort_unstable_by_key(|selection| selection.start);
2318 self.update_selections(new_selections, true, cx);
2319 }
2320 self.select_larger_syntax_node_stack = stack;
2321 }
2322
2323 pub fn select_smaller_syntax_node(
2324 &mut self,
2325 _: &SelectSmallerSyntaxNode,
2326 cx: &mut ViewContext<Self>,
2327 ) {
2328 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
2329 if let Some(selections) = stack.pop() {
2330 self.update_selections(selections.to_vec(), true, cx);
2331 }
2332 self.select_larger_syntax_node_stack = stack;
2333 }
2334
2335 pub fn move_to_enclosing_bracket(
2336 &mut self,
2337 _: &MoveToEnclosingBracket,
2338 cx: &mut ViewContext<Self>,
2339 ) {
2340 let mut selections = self.selections::<usize>(cx).collect::<Vec<_>>();
2341 let buffer = self.buffer.read(cx.as_ref());
2342 for selection in &mut selections {
2343 if let Some((open_range, close_range)) =
2344 buffer.enclosing_bracket_ranges(selection.start..selection.end)
2345 {
2346 let close_range = close_range.to_inclusive();
2347 let destination = if close_range.contains(&selection.start)
2348 && close_range.contains(&selection.end)
2349 {
2350 open_range.end
2351 } else {
2352 *close_range.start()
2353 };
2354 selection.start = destination;
2355 selection.end = destination;
2356 }
2357 }
2358
2359 self.update_selections(selections, true, cx);
2360 }
2361
2362 pub fn show_next_diagnostic(&mut self, _: &ShowNextDiagnostic, cx: &mut ViewContext<Self>) {
2363 let selection = self.newest_selection::<usize>(cx);
2364 let buffer = self.buffer.read(cx.as_ref());
2365 let active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
2366 active_diagnostics
2367 .primary_range
2368 .to_offset(buffer)
2369 .to_inclusive()
2370 });
2371 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
2372 if active_primary_range.contains(&selection.head()) {
2373 *active_primary_range.end()
2374 } else {
2375 selection.head()
2376 }
2377 } else {
2378 selection.head()
2379 };
2380
2381 loop {
2382 let next_group = buffer
2383 .diagnostics_in_range::<_, usize>(search_start..buffer.len())
2384 .find_map(|(range, diagnostic)| {
2385 if diagnostic.is_primary
2386 && !range.is_empty()
2387 && Some(range.end) != active_primary_range.as_ref().map(|r| *r.end())
2388 {
2389 Some((range, diagnostic.group_id))
2390 } else {
2391 None
2392 }
2393 });
2394
2395 if let Some((primary_range, group_id)) = next_group {
2396 self.activate_diagnostics(group_id, cx);
2397 self.update_selections(
2398 vec![Selection {
2399 id: selection.id,
2400 start: primary_range.start,
2401 end: primary_range.start,
2402 reversed: false,
2403 goal: SelectionGoal::None,
2404 }],
2405 true,
2406 cx,
2407 );
2408 break;
2409 } else if search_start == 0 {
2410 break;
2411 } else {
2412 // Cycle around to the start of the buffer.
2413 search_start = 0;
2414 }
2415 }
2416 }
2417
2418 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
2419 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
2420 let buffer = self.buffer.read(cx);
2421 let primary_range_start = active_diagnostics.primary_range.start.to_offset(buffer);
2422 let is_valid = buffer
2423 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone())
2424 .any(|(range, diagnostic)| {
2425 diagnostic.is_primary
2426 && !range.is_empty()
2427 && range.start == primary_range_start
2428 && diagnostic.message == active_diagnostics.primary_message
2429 });
2430
2431 if is_valid != active_diagnostics.is_valid {
2432 active_diagnostics.is_valid = is_valid;
2433 let mut new_styles = HashMap::new();
2434 for (block_id, diagnostic) in &active_diagnostics.blocks {
2435 let severity = diagnostic.severity;
2436 let message_len = diagnostic.message.len();
2437 new_styles.insert(
2438 *block_id,
2439 (
2440 Some({
2441 let build_settings = self.build_settings.clone();
2442 move |cx: &AppContext| {
2443 let settings = build_settings.borrow()(cx);
2444 vec![(
2445 message_len,
2446 diagnostic_style(severity, is_valid, &settings.style)
2447 .text
2448 .into(),
2449 )]
2450 }
2451 }),
2452 Some({
2453 let build_settings = self.build_settings.clone();
2454 move |cx: &AppContext| {
2455 let settings = build_settings.borrow()(cx);
2456 diagnostic_style(severity, is_valid, &settings.style).block
2457 }
2458 }),
2459 ),
2460 );
2461 }
2462 self.display_map
2463 .update(cx, |display_map, _| display_map.restyle_blocks(new_styles));
2464 }
2465 }
2466 }
2467
2468 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) {
2469 self.dismiss_diagnostics(cx);
2470 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
2471 let buffer = self.buffer.read(cx);
2472
2473 let mut primary_range = None;
2474 let mut primary_message = None;
2475 let mut group_end = Point::zero();
2476 let diagnostic_group = buffer
2477 .diagnostic_group::<Point>(group_id)
2478 .map(|(range, diagnostic)| {
2479 if range.end > group_end {
2480 group_end = range.end;
2481 }
2482 if diagnostic.is_primary {
2483 primary_range = Some(range.clone());
2484 primary_message = Some(diagnostic.message.clone());
2485 }
2486 (range, diagnostic.clone())
2487 })
2488 .collect::<Vec<_>>();
2489 let primary_range = primary_range.unwrap();
2490 let primary_message = primary_message.unwrap();
2491 let primary_range =
2492 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
2493
2494 let blocks = display_map
2495 .insert_blocks(
2496 diagnostic_group.iter().map(|(range, diagnostic)| {
2497 let build_settings = self.build_settings.clone();
2498 let message_len = diagnostic.message.len();
2499 let severity = diagnostic.severity;
2500 BlockProperties {
2501 position: range.start,
2502 text: diagnostic.message.as_str(),
2503 build_runs: Some(Arc::new({
2504 let build_settings = build_settings.clone();
2505 move |cx| {
2506 let settings = build_settings.borrow()(cx);
2507 vec![(
2508 message_len,
2509 diagnostic_style(severity, true, &settings.style)
2510 .text
2511 .into(),
2512 )]
2513 }
2514 })),
2515 build_style: Some(Arc::new({
2516 let build_settings = build_settings.clone();
2517 move |cx| {
2518 let settings = build_settings.borrow()(cx);
2519 diagnostic_style(severity, true, &settings.style).block
2520 }
2521 })),
2522 disposition: BlockDisposition::Below,
2523 }
2524 }),
2525 cx,
2526 )
2527 .into_iter()
2528 .zip(
2529 diagnostic_group
2530 .into_iter()
2531 .map(|(_, diagnostic)| diagnostic),
2532 )
2533 .collect();
2534
2535 Some(ActiveDiagnosticGroup {
2536 primary_range,
2537 primary_message,
2538 blocks,
2539 is_valid: true,
2540 })
2541 });
2542 }
2543
2544 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
2545 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
2546 self.display_map.update(cx, |display_map, cx| {
2547 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
2548 });
2549 cx.notify();
2550 }
2551 }
2552
2553 fn build_columnar_selection(
2554 &mut self,
2555 display_map: &DisplayMapSnapshot,
2556 row: u32,
2557 columns: &Range<u32>,
2558 reversed: bool,
2559 ) -> Option<Selection<Point>> {
2560 let is_empty = columns.start == columns.end;
2561 let line_len = display_map.line_len(row);
2562 if columns.start < line_len || (is_empty && columns.start == line_len) {
2563 let start = DisplayPoint::new(row, columns.start);
2564 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
2565 Some(Selection {
2566 id: post_inc(&mut self.next_selection_id),
2567 start: start.to_point(display_map),
2568 end: end.to_point(display_map),
2569 reversed,
2570 goal: SelectionGoal::ColumnRange {
2571 start: columns.start,
2572 end: columns.end,
2573 },
2574 })
2575 } else {
2576 None
2577 }
2578 }
2579
2580 pub fn active_selection_sets<'a>(
2581 &'a self,
2582 cx: &'a AppContext,
2583 ) -> impl 'a + Iterator<Item = SelectionSetId> {
2584 let buffer = self.buffer.read(cx);
2585 let replica_id = buffer.replica_id();
2586 buffer
2587 .selection_sets()
2588 .filter(move |(set_id, set)| {
2589 set.active && (set_id.replica_id != replica_id || **set_id == self.selection_set_id)
2590 })
2591 .map(|(set_id, _)| *set_id)
2592 }
2593
2594 pub fn selections_in_range<'a>(
2595 &'a self,
2596 set_id: SelectionSetId,
2597 range: Range<DisplayPoint>,
2598 cx: &'a mut MutableAppContext,
2599 ) -> impl 'a + Iterator<Item = Range<DisplayPoint>> {
2600 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2601 let buffer = self.buffer.read(cx);
2602 let selections = self
2603 .buffer
2604 .read(cx)
2605 .selection_set(set_id)
2606 .unwrap()
2607 .selections::<Point, _>(buffer)
2608 .collect::<Vec<_>>();
2609 let start = range.start.to_point(&display_map);
2610 let start_index = self.selection_insertion_index(&selections, start);
2611 let pending_selection = if set_id == self.selection_set_id {
2612 self.pending_selection.as_ref().and_then(|pending| {
2613 let mut selection_start = pending.selection.start.to_display_point(&display_map);
2614 let mut selection_end = pending.selection.end.to_display_point(&display_map);
2615 if pending.selection.reversed {
2616 mem::swap(&mut selection_start, &mut selection_end);
2617 }
2618 if selection_start <= range.end || selection_end <= range.end {
2619 Some(selection_start..selection_end)
2620 } else {
2621 None
2622 }
2623 })
2624 } else {
2625 None
2626 };
2627 selections
2628 .into_iter()
2629 .skip(start_index)
2630 .map(move |s| s.display_range(&display_map))
2631 .take_while(move |r| r.start <= range.end || r.end <= range.end)
2632 .chain(pending_selection)
2633 }
2634
2635 fn selection_insertion_index(&self, selections: &[Selection<Point>], start: Point) -> usize {
2636 match selections.binary_search_by_key(&start, |probe| probe.start) {
2637 Ok(index) => index,
2638 Err(index) => {
2639 if index > 0 && selections[index - 1].end > start {
2640 index - 1
2641 } else {
2642 index
2643 }
2644 }
2645 }
2646 }
2647
2648 pub fn selections<'a, D>(&self, cx: &'a AppContext) -> impl 'a + Iterator<Item = Selection<D>>
2649 where
2650 D: 'a + TextDimension<'a> + Ord,
2651 {
2652 let buffer = self.buffer.read(cx);
2653 let mut selections = self.selection_set(cx).selections::<D, _>(buffer).peekable();
2654 let mut pending_selection = self.pending_selection(cx);
2655 iter::from_fn(move || {
2656 if let Some(pending) = pending_selection.as_mut() {
2657 while let Some(next_selection) = selections.peek() {
2658 if pending.start <= next_selection.end && pending.end >= next_selection.start {
2659 let next_selection = selections.next().unwrap();
2660 if next_selection.start < pending.start {
2661 pending.start = next_selection.start;
2662 }
2663 if next_selection.end > pending.end {
2664 pending.end = next_selection.end;
2665 }
2666 } else if next_selection.end < pending.start {
2667 return selections.next();
2668 } else {
2669 break;
2670 }
2671 }
2672
2673 pending_selection.take()
2674 } else {
2675 selections.next()
2676 }
2677 })
2678 }
2679
2680 fn pending_selection<'a, D>(&self, cx: &'a AppContext) -> Option<Selection<D>>
2681 where
2682 D: 'a + TextDimension<'a>,
2683 {
2684 let buffer = self.buffer.read(cx);
2685 self.pending_selection.as_ref().map(|pending| Selection {
2686 id: pending.selection.id,
2687 start: pending.selection.start.summary::<D, _>(buffer),
2688 end: pending.selection.end.summary::<D, _>(buffer),
2689 reversed: pending.selection.reversed,
2690 goal: pending.selection.goal,
2691 })
2692 }
2693
2694 fn selection_count<'a>(&self, cx: &'a AppContext) -> usize {
2695 let mut selection_count = self.selection_set(cx).len();
2696 if self.pending_selection.is_some() {
2697 selection_count += 1;
2698 }
2699 selection_count
2700 }
2701
2702 pub fn oldest_selection<'a, T>(&self, cx: &'a AppContext) -> Selection<T>
2703 where
2704 T: 'a + TextDimension<'a>,
2705 {
2706 let buffer = self.buffer.read(cx);
2707 self.selection_set(cx)
2708 .oldest_selection(buffer)
2709 .or_else(|| self.pending_selection(cx))
2710 .unwrap()
2711 }
2712
2713 pub fn newest_selection<'a, T>(&self, cx: &'a AppContext) -> Selection<T>
2714 where
2715 T: 'a + TextDimension<'a>,
2716 {
2717 let buffer = self.buffer.read(cx);
2718 self.pending_selection(cx)
2719 .or_else(|| self.selection_set(cx).newest_selection(buffer))
2720 .unwrap()
2721 }
2722
2723 fn selection_set<'a>(&self, cx: &'a AppContext) -> &'a SelectionSet {
2724 self.buffer
2725 .read(cx)
2726 .selection_set(self.selection_set_id)
2727 .unwrap()
2728 }
2729
2730 fn update_selections<T>(
2731 &mut self,
2732 mut selections: Vec<Selection<T>>,
2733 autoscroll: bool,
2734 cx: &mut ViewContext<Self>,
2735 ) where
2736 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
2737 {
2738 // Merge overlapping selections.
2739 let buffer = self.buffer.read(cx);
2740 let mut i = 1;
2741 while i < selections.len() {
2742 if selections[i - 1].end >= selections[i].start {
2743 let removed = selections.remove(i);
2744 if removed.start < selections[i - 1].start {
2745 selections[i - 1].start = removed.start;
2746 }
2747 if removed.end > selections[i - 1].end {
2748 selections[i - 1].end = removed.end;
2749 }
2750 } else {
2751 i += 1;
2752 }
2753 }
2754
2755 self.pending_selection = None;
2756 self.add_selections_state = None;
2757 self.select_larger_syntax_node_stack.clear();
2758 while let Some(autoclose_pair_state) = self.autoclose_stack.last() {
2759 let all_selections_inside_autoclose_ranges =
2760 if selections.len() == autoclose_pair_state.ranges.len() {
2761 selections
2762 .iter()
2763 .zip(autoclose_pair_state.ranges.ranges::<Point, _>(buffer))
2764 .all(|(selection, autoclose_range)| {
2765 let head = selection.head().to_point(&*buffer);
2766 autoclose_range.start <= head && autoclose_range.end >= head
2767 })
2768 } else {
2769 false
2770 };
2771
2772 if all_selections_inside_autoclose_ranges {
2773 break;
2774 } else {
2775 self.autoclose_stack.pop();
2776 }
2777 }
2778
2779 if autoscroll {
2780 self.request_autoscroll(cx);
2781 }
2782 self.pause_cursor_blinking(cx);
2783
2784 self.buffer.update(cx, |buffer, cx| {
2785 buffer
2786 .update_selection_set(self.selection_set_id, &selections, cx)
2787 .unwrap();
2788 });
2789 }
2790
2791 fn request_autoscroll(&mut self, cx: &mut ViewContext<Self>) {
2792 self.autoscroll_requested = true;
2793 cx.notify();
2794 }
2795
2796 fn start_transaction(&mut self, cx: &mut ViewContext<Self>) {
2797 self.end_selection(cx);
2798 self.buffer.update(cx, |buffer, _| {
2799 buffer
2800 .start_transaction(Some(self.selection_set_id))
2801 .unwrap()
2802 });
2803 }
2804
2805 fn end_transaction(&self, cx: &mut ViewContext<Self>) {
2806 self.buffer.update(cx, |buffer, cx| {
2807 buffer
2808 .end_transaction(Some(self.selection_set_id), cx)
2809 .unwrap()
2810 });
2811 }
2812
2813 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
2814 log::info!("Editor::page_up");
2815 }
2816
2817 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
2818 log::info!("Editor::page_down");
2819 }
2820
2821 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
2822 let mut fold_ranges = Vec::new();
2823
2824 let selections = self.selections::<Point>(cx).collect::<Vec<_>>();
2825 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2826 for selection in selections {
2827 let range = selection.display_range(&display_map).sorted();
2828 let buffer_start_row = range.start.to_point(&display_map).row;
2829
2830 for row in (0..=range.end.row()).rev() {
2831 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
2832 let fold_range = self.foldable_range_for_line(&display_map, row);
2833 if fold_range.end.row >= buffer_start_row {
2834 fold_ranges.push(fold_range);
2835 if row <= range.start.row() {
2836 break;
2837 }
2838 }
2839 }
2840 }
2841 }
2842
2843 self.fold_ranges(fold_ranges, cx);
2844 }
2845
2846 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
2847 let selections = self.selections::<Point>(cx).collect::<Vec<_>>();
2848 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2849 let buffer = self.buffer.read(cx);
2850 let ranges = selections
2851 .iter()
2852 .map(|s| {
2853 let range = s.display_range(&display_map).sorted();
2854 let mut start = range.start.to_point(&display_map);
2855 let mut end = range.end.to_point(&display_map);
2856 start.column = 0;
2857 end.column = buffer.line_len(end.row);
2858 start..end
2859 })
2860 .collect::<Vec<_>>();
2861 self.unfold_ranges(ranges, cx);
2862 }
2863
2864 fn is_line_foldable(&self, display_map: &DisplayMapSnapshot, display_row: u32) -> bool {
2865 let max_point = display_map.max_point();
2866 if display_row >= max_point.row() {
2867 false
2868 } else {
2869 let (start_indent, is_blank) = display_map.line_indent(display_row);
2870 if is_blank {
2871 false
2872 } else {
2873 for display_row in display_row + 1..=max_point.row() {
2874 let (indent, is_blank) = display_map.line_indent(display_row);
2875 if !is_blank {
2876 return indent > start_indent;
2877 }
2878 }
2879 false
2880 }
2881 }
2882 }
2883
2884 fn foldable_range_for_line(
2885 &self,
2886 display_map: &DisplayMapSnapshot,
2887 start_row: u32,
2888 ) -> Range<Point> {
2889 let max_point = display_map.max_point();
2890
2891 let (start_indent, _) = display_map.line_indent(start_row);
2892 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
2893 let mut end = None;
2894 for row in start_row + 1..=max_point.row() {
2895 let (indent, is_blank) = display_map.line_indent(row);
2896 if !is_blank && indent <= start_indent {
2897 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
2898 break;
2899 }
2900 }
2901
2902 let end = end.unwrap_or(max_point);
2903 return start.to_point(display_map)..end.to_point(display_map);
2904 }
2905
2906 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
2907 let selections = self.selections::<Point>(cx);
2908 let ranges = selections.map(|s| s.start..s.end).collect();
2909 self.fold_ranges(ranges, cx);
2910 }
2911
2912 fn fold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
2913 if !ranges.is_empty() {
2914 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
2915 self.autoscroll_requested = true;
2916 cx.notify();
2917 }
2918 }
2919
2920 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
2921 if !ranges.is_empty() {
2922 self.display_map
2923 .update(cx, |map, cx| map.unfold(ranges, cx));
2924 self.autoscroll_requested = true;
2925 cx.notify();
2926 }
2927 }
2928
2929 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
2930 self.display_map
2931 .update(cx, |map, cx| map.snapshot(cx))
2932 .longest_row()
2933 }
2934
2935 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
2936 self.display_map
2937 .update(cx, |map, cx| map.snapshot(cx))
2938 .max_point()
2939 }
2940
2941 pub fn text(&self, cx: &AppContext) -> String {
2942 self.buffer.read(cx).text()
2943 }
2944
2945 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
2946 self.display_map
2947 .update(cx, |map, cx| map.snapshot(cx))
2948 .text()
2949 }
2950
2951 // pub fn font_size(&self) -> f32 {
2952 // self.settings.font_size
2953 // }
2954
2955 pub fn set_wrap_width(&self, width: f32, cx: &mut MutableAppContext) -> bool {
2956 self.display_map
2957 .update(cx, |map, cx| map.set_wrap_width(Some(width), cx))
2958 }
2959
2960 fn next_blink_epoch(&mut self) -> usize {
2961 self.blink_epoch += 1;
2962 self.blink_epoch
2963 }
2964
2965 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
2966 self.show_local_cursors = true;
2967 cx.notify();
2968
2969 let epoch = self.next_blink_epoch();
2970 cx.spawn(|this, mut cx| {
2971 let this = this.downgrade();
2972 async move {
2973 Timer::after(CURSOR_BLINK_INTERVAL).await;
2974 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
2975 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
2976 }
2977 }
2978 })
2979 .detach();
2980 }
2981
2982 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
2983 if epoch == self.blink_epoch {
2984 self.blinking_paused = false;
2985 self.blink_cursors(epoch, cx);
2986 }
2987 }
2988
2989 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
2990 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
2991 self.show_local_cursors = !self.show_local_cursors;
2992 cx.notify();
2993
2994 let epoch = self.next_blink_epoch();
2995 cx.spawn(|this, mut cx| {
2996 let this = this.downgrade();
2997 async move {
2998 Timer::after(CURSOR_BLINK_INTERVAL).await;
2999 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
3000 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
3001 }
3002 }
3003 })
3004 .detach();
3005 }
3006 }
3007
3008 pub fn show_local_cursors(&self) -> bool {
3009 self.show_local_cursors
3010 }
3011
3012 fn on_buffer_changed(&mut self, _: ModelHandle<Buffer>, cx: &mut ViewContext<Self>) {
3013 self.refresh_active_diagnostics(cx);
3014 cx.notify();
3015 }
3016
3017 fn on_buffer_event(
3018 &mut self,
3019 _: ModelHandle<Buffer>,
3020 event: &language::Event,
3021 cx: &mut ViewContext<Self>,
3022 ) {
3023 match event {
3024 language::Event::Edited => cx.emit(Event::Edited),
3025 language::Event::Dirtied => cx.emit(Event::Dirtied),
3026 language::Event::Saved => cx.emit(Event::Saved),
3027 language::Event::FileHandleChanged => cx.emit(Event::FileHandleChanged),
3028 language::Event::Reloaded => cx.emit(Event::FileHandleChanged),
3029 language::Event::Closed => cx.emit(Event::Closed),
3030 language::Event::Reparsed => {}
3031 }
3032 }
3033
3034 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
3035 cx.notify();
3036 }
3037}
3038
3039impl Snapshot {
3040 pub fn is_empty(&self) -> bool {
3041 self.display_snapshot.is_empty()
3042 }
3043
3044 pub fn is_focused(&self) -> bool {
3045 self.is_focused
3046 }
3047
3048 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
3049 self.placeholder_text.as_ref()
3050 }
3051
3052 pub fn buffer_row_count(&self) -> u32 {
3053 self.display_snapshot.buffer_row_count()
3054 }
3055
3056 pub fn buffer_rows<'a>(&'a self, start_row: u32, cx: &'a AppContext) -> BufferRows<'a> {
3057 self.display_snapshot.buffer_rows(start_row, Some(cx))
3058 }
3059
3060 pub fn chunks<'a>(
3061 &'a self,
3062 display_rows: Range<u32>,
3063 theme: Option<&'a SyntaxTheme>,
3064 cx: &'a AppContext,
3065 ) -> display_map::Chunks<'a> {
3066 self.display_snapshot.chunks(display_rows, theme, cx)
3067 }
3068
3069 pub fn scroll_position(&self) -> Vector2F {
3070 compute_scroll_position(
3071 &self.display_snapshot,
3072 self.scroll_position,
3073 &self.scroll_top_anchor,
3074 )
3075 }
3076
3077 pub fn max_point(&self) -> DisplayPoint {
3078 self.display_snapshot.max_point()
3079 }
3080
3081 pub fn longest_row(&self) -> u32 {
3082 self.display_snapshot.longest_row()
3083 }
3084
3085 pub fn line_len(&self, display_row: u32) -> u32 {
3086 self.display_snapshot.line_len(display_row)
3087 }
3088
3089 pub fn line(&self, display_row: u32) -> String {
3090 self.display_snapshot.line(display_row)
3091 }
3092
3093 pub fn prev_row_boundary(&self, point: DisplayPoint) -> (DisplayPoint, Point) {
3094 self.display_snapshot.prev_row_boundary(point)
3095 }
3096
3097 pub fn next_row_boundary(&self, point: DisplayPoint) -> (DisplayPoint, Point) {
3098 self.display_snapshot.next_row_boundary(point)
3099 }
3100}
3101
3102impl EditorSettings {
3103 #[cfg(any(test, feature = "test-support"))]
3104 pub fn test(cx: &AppContext) -> Self {
3105 Self {
3106 tab_size: 4,
3107 style: {
3108 let font_cache: &gpui::FontCache = cx.font_cache();
3109 let font_family_name = Arc::from("Monaco");
3110 let font_properties = Default::default();
3111 let font_family_id = font_cache.load_family(&[&font_family_name]).unwrap();
3112 let font_id = font_cache
3113 .select_font(font_family_id, &font_properties)
3114 .unwrap();
3115 EditorStyle {
3116 text: gpui::fonts::TextStyle {
3117 font_family_name,
3118 font_family_id,
3119 font_id,
3120 font_size: 14.,
3121 color: gpui::color::Color::from_u32(0xff0000ff),
3122 font_properties,
3123 underline: None,
3124 },
3125 placeholder_text: None,
3126 background: Default::default(),
3127 gutter_background: Default::default(),
3128 active_line_background: Default::default(),
3129 line_number: Default::default(),
3130 line_number_active: Default::default(),
3131 selection: Default::default(),
3132 guest_selections: Default::default(),
3133 syntax: Default::default(),
3134 error_diagnostic: Default::default(),
3135 invalid_error_diagnostic: Default::default(),
3136 warning_diagnostic: Default::default(),
3137 invalid_warning_diagnostic: Default::default(),
3138 information_diagnostic: Default::default(),
3139 invalid_information_diagnostic: Default::default(),
3140 hint_diagnostic: Default::default(),
3141 invalid_hint_diagnostic: Default::default(),
3142 }
3143 },
3144 }
3145 }
3146}
3147
3148fn compute_scroll_position(
3149 snapshot: &DisplayMapSnapshot,
3150 mut scroll_position: Vector2F,
3151 scroll_top_anchor: &Anchor,
3152) -> Vector2F {
3153 let scroll_top = scroll_top_anchor.to_display_point(snapshot).row() as f32;
3154 scroll_position.set_y(scroll_top + scroll_position.y());
3155 scroll_position
3156}
3157
3158pub enum Event {
3159 Activate,
3160 Edited,
3161 Blurred,
3162 Dirtied,
3163 Saved,
3164 FileHandleChanged,
3165 Closed,
3166}
3167
3168impl Entity for Editor {
3169 type Event = Event;
3170
3171 fn release(&mut self, cx: &mut MutableAppContext) {
3172 self.buffer.update(cx, |buffer, cx| {
3173 buffer
3174 .remove_selection_set(self.selection_set_id, cx)
3175 .unwrap();
3176 });
3177 }
3178}
3179
3180impl View for Editor {
3181 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
3182 let settings = self.build_settings.borrow_mut()(cx);
3183 self.display_map.update(cx, |map, cx| {
3184 map.set_font(
3185 settings.style.text.font_id,
3186 settings.style.text.font_size,
3187 cx,
3188 )
3189 });
3190 EditorElement::new(self.handle.clone(), settings).boxed()
3191 }
3192
3193 fn ui_name() -> &'static str {
3194 "Editor"
3195 }
3196
3197 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
3198 self.focused = true;
3199 self.blink_cursors(self.blink_epoch, cx);
3200 self.buffer.update(cx, |buffer, cx| {
3201 buffer
3202 .set_active_selection_set(Some(self.selection_set_id), cx)
3203 .unwrap();
3204 });
3205 }
3206
3207 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
3208 self.focused = false;
3209 self.show_local_cursors = false;
3210 self.buffer.update(cx, |buffer, cx| {
3211 buffer.set_active_selection_set(None, cx).unwrap();
3212 });
3213 cx.emit(Event::Blurred);
3214 cx.notify();
3215 }
3216
3217 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
3218 let mut cx = Self::default_keymap_context();
3219 let mode = match self.mode {
3220 EditorMode::SingleLine => "single_line",
3221 EditorMode::AutoHeight { .. } => "auto_height",
3222 EditorMode::Full => "full",
3223 };
3224 cx.map.insert("mode".into(), mode.into());
3225 cx
3226 }
3227}
3228
3229impl SelectionExt for Selection<Point> {
3230 fn display_range(&self, map: &DisplayMapSnapshot) -> Range<DisplayPoint> {
3231 let start = self.start.to_display_point(map);
3232 let end = self.end.to_display_point(map);
3233 if self.reversed {
3234 end..start
3235 } else {
3236 start..end
3237 }
3238 }
3239
3240 fn spanned_rows(
3241 &self,
3242 include_end_if_at_line_start: bool,
3243 map: &DisplayMapSnapshot,
3244 ) -> SpannedRows {
3245 let display_start = self.start.to_display_point(map);
3246 let mut display_end = self.end.to_display_point(map);
3247 if !include_end_if_at_line_start
3248 && display_end.row() != map.max_point().row()
3249 && display_start.row() != display_end.row()
3250 && display_end.column() == 0
3251 {
3252 *display_end.row_mut() -= 1;
3253 }
3254
3255 let (display_start, buffer_start) = map.prev_row_boundary(display_start);
3256 let (display_end, buffer_end) = map.next_row_boundary(display_end);
3257
3258 SpannedRows {
3259 buffer_rows: buffer_start.row..buffer_end.row + 1,
3260 display_rows: display_start.row()..display_end.row() + 1,
3261 }
3262 }
3263}
3264
3265pub fn diagnostic_style(
3266 severity: DiagnosticSeverity,
3267 valid: bool,
3268 style: &EditorStyle,
3269) -> DiagnosticStyle {
3270 match (severity, valid) {
3271 (DiagnosticSeverity::ERROR, true) => style.error_diagnostic,
3272 (DiagnosticSeverity::ERROR, false) => style.invalid_error_diagnostic,
3273 (DiagnosticSeverity::WARNING, true) => style.warning_diagnostic,
3274 (DiagnosticSeverity::WARNING, false) => style.invalid_warning_diagnostic,
3275 (DiagnosticSeverity::INFORMATION, true) => style.information_diagnostic,
3276 (DiagnosticSeverity::INFORMATION, false) => style.invalid_information_diagnostic,
3277 (DiagnosticSeverity::HINT, true) => style.hint_diagnostic,
3278 (DiagnosticSeverity::HINT, false) => style.invalid_hint_diagnostic,
3279 _ => Default::default(),
3280 }
3281}
3282
3283#[cfg(test)]
3284mod tests {
3285 use super::*;
3286 use crate::test::sample_text;
3287 use buffer::Point;
3288 use unindent::Unindent;
3289
3290 #[gpui::test]
3291 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
3292 let buffer = cx.add_model(|cx| Buffer::new(0, "aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx));
3293 let settings = EditorSettings::test(cx);
3294 let (_, editor) =
3295 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3296
3297 editor.update(cx, |view, cx| {
3298 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
3299 });
3300
3301 assert_eq!(
3302 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3303 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
3304 );
3305
3306 editor.update(cx, |view, cx| {
3307 view.update_selection(DisplayPoint::new(3, 3), Vector2F::zero(), cx);
3308 });
3309
3310 assert_eq!(
3311 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3312 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
3313 );
3314
3315 editor.update(cx, |view, cx| {
3316 view.update_selection(DisplayPoint::new(1, 1), Vector2F::zero(), cx);
3317 });
3318
3319 assert_eq!(
3320 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3321 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
3322 );
3323
3324 editor.update(cx, |view, cx| {
3325 view.end_selection(cx);
3326 view.update_selection(DisplayPoint::new(3, 3), Vector2F::zero(), cx);
3327 });
3328
3329 assert_eq!(
3330 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3331 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
3332 );
3333
3334 editor.update(cx, |view, cx| {
3335 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
3336 view.update_selection(DisplayPoint::new(0, 0), Vector2F::zero(), cx);
3337 });
3338
3339 assert_eq!(
3340 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3341 [
3342 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
3343 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
3344 ]
3345 );
3346
3347 editor.update(cx, |view, cx| {
3348 view.end_selection(cx);
3349 });
3350
3351 assert_eq!(
3352 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3353 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
3354 );
3355 }
3356
3357 #[gpui::test]
3358 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
3359 let buffer = cx.add_model(|cx| Buffer::new(0, "aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx));
3360 let settings = EditorSettings::test(cx);
3361 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3362
3363 view.update(cx, |view, cx| {
3364 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
3365 assert_eq!(
3366 view.selection_ranges(cx),
3367 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
3368 );
3369 });
3370
3371 view.update(cx, |view, cx| {
3372 view.update_selection(DisplayPoint::new(3, 3), Vector2F::zero(), cx);
3373 assert_eq!(
3374 view.selection_ranges(cx),
3375 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
3376 );
3377 });
3378
3379 view.update(cx, |view, cx| {
3380 view.cancel(&Cancel, cx);
3381 view.update_selection(DisplayPoint::new(1, 1), Vector2F::zero(), cx);
3382 assert_eq!(
3383 view.selection_ranges(cx),
3384 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
3385 );
3386 });
3387 }
3388
3389 #[gpui::test]
3390 fn test_cancel(cx: &mut gpui::MutableAppContext) {
3391 let buffer = cx.add_model(|cx| Buffer::new(0, "aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx));
3392 let settings = EditorSettings::test(cx);
3393 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3394
3395 view.update(cx, |view, cx| {
3396 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
3397 view.update_selection(DisplayPoint::new(1, 1), Vector2F::zero(), cx);
3398 view.end_selection(cx);
3399
3400 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
3401 view.update_selection(DisplayPoint::new(0, 3), Vector2F::zero(), cx);
3402 view.end_selection(cx);
3403 assert_eq!(
3404 view.selection_ranges(cx),
3405 [
3406 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
3407 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
3408 ]
3409 );
3410 });
3411
3412 view.update(cx, |view, cx| {
3413 view.cancel(&Cancel, cx);
3414 assert_eq!(
3415 view.selection_ranges(cx),
3416 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
3417 );
3418 });
3419
3420 view.update(cx, |view, cx| {
3421 view.cancel(&Cancel, cx);
3422 assert_eq!(
3423 view.selection_ranges(cx),
3424 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
3425 );
3426 });
3427 }
3428
3429 #[gpui::test]
3430 fn test_fold(cx: &mut gpui::MutableAppContext) {
3431 let buffer = cx.add_model(|cx| {
3432 Buffer::new(
3433 0,
3434 "
3435 impl Foo {
3436 // Hello!
3437
3438 fn a() {
3439 1
3440 }
3441
3442 fn b() {
3443 2
3444 }
3445
3446 fn c() {
3447 3
3448 }
3449 }
3450 "
3451 .unindent(),
3452 cx,
3453 )
3454 });
3455 let settings = EditorSettings::test(&cx);
3456 let (_, view) = cx.add_window(Default::default(), |cx| {
3457 build_editor(buffer.clone(), settings, cx)
3458 });
3459
3460 view.update(cx, |view, cx| {
3461 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx)
3462 .unwrap();
3463 view.fold(&Fold, cx);
3464 assert_eq!(
3465 view.display_text(cx),
3466 "
3467 impl Foo {
3468 // Hello!
3469
3470 fn a() {
3471 1
3472 }
3473
3474 fn b() {…
3475 }
3476
3477 fn c() {…
3478 }
3479 }
3480 "
3481 .unindent(),
3482 );
3483
3484 view.fold(&Fold, cx);
3485 assert_eq!(
3486 view.display_text(cx),
3487 "
3488 impl Foo {…
3489 }
3490 "
3491 .unindent(),
3492 );
3493
3494 view.unfold(&Unfold, cx);
3495 assert_eq!(
3496 view.display_text(cx),
3497 "
3498 impl Foo {
3499 // Hello!
3500
3501 fn a() {
3502 1
3503 }
3504
3505 fn b() {…
3506 }
3507
3508 fn c() {…
3509 }
3510 }
3511 "
3512 .unindent(),
3513 );
3514
3515 view.unfold(&Unfold, cx);
3516 assert_eq!(view.display_text(cx), buffer.read(cx).text());
3517 });
3518 }
3519
3520 #[gpui::test]
3521 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
3522 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(6, 6), cx));
3523 let settings = EditorSettings::test(&cx);
3524 let (_, view) = cx.add_window(Default::default(), |cx| {
3525 build_editor(buffer.clone(), settings, cx)
3526 });
3527
3528 buffer.update(cx, |buffer, cx| {
3529 buffer.edit(
3530 vec![
3531 Point::new(1, 0)..Point::new(1, 0),
3532 Point::new(1, 1)..Point::new(1, 1),
3533 ],
3534 "\t",
3535 cx,
3536 );
3537 });
3538
3539 view.update(cx, |view, cx| {
3540 assert_eq!(
3541 view.selection_ranges(cx),
3542 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
3543 );
3544
3545 view.move_down(&MoveDown, cx);
3546 assert_eq!(
3547 view.selection_ranges(cx),
3548 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
3549 );
3550
3551 view.move_right(&MoveRight, cx);
3552 assert_eq!(
3553 view.selection_ranges(cx),
3554 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
3555 );
3556
3557 view.move_left(&MoveLeft, cx);
3558 assert_eq!(
3559 view.selection_ranges(cx),
3560 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
3561 );
3562
3563 view.move_up(&MoveUp, cx);
3564 assert_eq!(
3565 view.selection_ranges(cx),
3566 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
3567 );
3568
3569 view.move_to_end(&MoveToEnd, cx);
3570 assert_eq!(
3571 view.selection_ranges(cx),
3572 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
3573 );
3574
3575 view.move_to_beginning(&MoveToBeginning, cx);
3576 assert_eq!(
3577 view.selection_ranges(cx),
3578 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
3579 );
3580
3581 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx)
3582 .unwrap();
3583 view.select_to_beginning(&SelectToBeginning, cx);
3584 assert_eq!(
3585 view.selection_ranges(cx),
3586 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
3587 );
3588
3589 view.select_to_end(&SelectToEnd, cx);
3590 assert_eq!(
3591 view.selection_ranges(cx),
3592 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
3593 );
3594 });
3595 }
3596
3597 #[gpui::test]
3598 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
3599 let buffer = cx.add_model(|cx| Buffer::new(0, "ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx));
3600 let settings = EditorSettings::test(&cx);
3601 let (_, view) = cx.add_window(Default::default(), |cx| {
3602 build_editor(buffer.clone(), settings, cx)
3603 });
3604
3605 assert_eq!('ⓐ'.len_utf8(), 3);
3606 assert_eq!('α'.len_utf8(), 2);
3607
3608 view.update(cx, |view, cx| {
3609 view.fold_ranges(
3610 vec![
3611 Point::new(0, 6)..Point::new(0, 12),
3612 Point::new(1, 2)..Point::new(1, 4),
3613 Point::new(2, 4)..Point::new(2, 8),
3614 ],
3615 cx,
3616 );
3617 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
3618
3619 view.move_right(&MoveRight, cx);
3620 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐ".len())]);
3621 view.move_right(&MoveRight, cx);
3622 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ".len())]);
3623 view.move_right(&MoveRight, cx);
3624 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ…".len())]);
3625
3626 view.move_down(&MoveDown, cx);
3627 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "ab…".len())]);
3628 view.move_left(&MoveLeft, cx);
3629 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "ab".len())]);
3630 view.move_left(&MoveLeft, cx);
3631 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "a".len())]);
3632
3633 view.move_down(&MoveDown, cx);
3634 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "α".len())]);
3635 view.move_right(&MoveRight, cx);
3636 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβ".len())]);
3637 view.move_right(&MoveRight, cx);
3638 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβ…".len())]);
3639 view.move_right(&MoveRight, cx);
3640 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβ…ε".len())]);
3641
3642 view.move_up(&MoveUp, cx);
3643 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "ab…e".len())]);
3644 view.move_up(&MoveUp, cx);
3645 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ…ⓔ".len())]);
3646 view.move_left(&MoveLeft, cx);
3647 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ…".len())]);
3648 view.move_left(&MoveLeft, cx);
3649 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ".len())]);
3650 view.move_left(&MoveLeft, cx);
3651 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐ".len())]);
3652 });
3653 }
3654
3655 #[gpui::test]
3656 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
3657 let buffer = cx.add_model(|cx| Buffer::new(0, "ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx));
3658 let settings = EditorSettings::test(&cx);
3659 let (_, view) = cx.add_window(Default::default(), |cx| {
3660 build_editor(buffer.clone(), settings, cx)
3661 });
3662 view.update(cx, |view, cx| {
3663 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx)
3664 .unwrap();
3665
3666 view.move_down(&MoveDown, cx);
3667 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "abcd".len())]);
3668
3669 view.move_down(&MoveDown, cx);
3670 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβγ".len())]);
3671
3672 view.move_down(&MoveDown, cx);
3673 assert_eq!(view.selection_ranges(cx), &[empty_range(3, "abcd".len())]);
3674
3675 view.move_down(&MoveDown, cx);
3676 assert_eq!(view.selection_ranges(cx), &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]);
3677
3678 view.move_up(&MoveUp, cx);
3679 assert_eq!(view.selection_ranges(cx), &[empty_range(3, "abcd".len())]);
3680
3681 view.move_up(&MoveUp, cx);
3682 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβγ".len())]);
3683 });
3684 }
3685
3686 #[gpui::test]
3687 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
3688 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\n def", cx));
3689 let settings = EditorSettings::test(&cx);
3690 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3691 view.update(cx, |view, cx| {
3692 view.select_display_ranges(
3693 &[
3694 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
3695 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
3696 ],
3697 cx,
3698 )
3699 .unwrap();
3700 });
3701
3702 view.update(cx, |view, cx| {
3703 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
3704 assert_eq!(
3705 view.selection_ranges(cx),
3706 &[
3707 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
3708 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
3709 ]
3710 );
3711 });
3712
3713 view.update(cx, |view, cx| {
3714 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
3715 assert_eq!(
3716 view.selection_ranges(cx),
3717 &[
3718 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
3719 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
3720 ]
3721 );
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_end_of_line(&MoveToEndOfLine, cx);
3737 assert_eq!(
3738 view.selection_ranges(cx),
3739 &[
3740 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
3741 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
3742 ]
3743 );
3744 });
3745
3746 // Moving to the end of line again is a no-op.
3747 view.update(cx, |view, cx| {
3748 view.move_to_end_of_line(&MoveToEndOfLine, cx);
3749 assert_eq!(
3750 view.selection_ranges(cx),
3751 &[
3752 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
3753 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
3754 ]
3755 );
3756 });
3757
3758 view.update(cx, |view, cx| {
3759 view.move_left(&MoveLeft, cx);
3760 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
3761 assert_eq!(
3762 view.selection_ranges(cx),
3763 &[
3764 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
3765 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
3766 ]
3767 );
3768 });
3769
3770 view.update(cx, |view, cx| {
3771 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
3772 assert_eq!(
3773 view.selection_ranges(cx),
3774 &[
3775 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
3776 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
3777 ]
3778 );
3779 });
3780
3781 view.update(cx, |view, 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_end_of_line(&SelectToEndOfLine, cx);
3794 assert_eq!(
3795 view.selection_ranges(cx),
3796 &[
3797 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
3798 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
3799 ]
3800 );
3801 });
3802
3803 view.update(cx, |view, cx| {
3804 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
3805 assert_eq!(view.display_text(cx), "ab\n de");
3806 assert_eq!(
3807 view.selection_ranges(cx),
3808 &[
3809 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
3810 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
3811 ]
3812 );
3813 });
3814
3815 view.update(cx, |view, cx| {
3816 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
3817 assert_eq!(view.display_text(cx), "\n");
3818 assert_eq!(
3819 view.selection_ranges(cx),
3820 &[
3821 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
3822 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
3823 ]
3824 );
3825 });
3826 }
3827
3828 #[gpui::test]
3829 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
3830 let buffer =
3831 cx.add_model(|cx| Buffer::new(0, "use std::str::{foo, bar}\n\n {baz.qux()}", cx));
3832 let settings = EditorSettings::test(&cx);
3833 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3834 view.update(cx, |view, cx| {
3835 view.select_display_ranges(
3836 &[
3837 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
3838 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
3839 ],
3840 cx,
3841 )
3842 .unwrap();
3843 });
3844
3845 view.update(cx, |view, cx| {
3846 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
3847 assert_eq!(
3848 view.selection_ranges(cx),
3849 &[
3850 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
3851 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
3852 ]
3853 );
3854 });
3855
3856 view.update(cx, |view, cx| {
3857 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
3858 assert_eq!(
3859 view.selection_ranges(cx),
3860 &[
3861 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
3862 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2),
3863 ]
3864 );
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, 4)..DisplayPoint::new(0, 4),
3873 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
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, 0)..DisplayPoint::new(0, 0),
3884 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
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, 0)..DisplayPoint::new(0, 0),
3895 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 23),
3896 ]
3897 );
3898 });
3899
3900 view.update(cx, |view, cx| {
3901 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
3902 assert_eq!(
3903 view.selection_ranges(cx),
3904 &[
3905 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
3906 DisplayPoint::new(0, 24)..DisplayPoint::new(0, 24),
3907 ]
3908 );
3909 });
3910
3911 view.update(cx, |view, cx| {
3912 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
3913 assert_eq!(
3914 view.selection_ranges(cx),
3915 &[
3916 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
3917 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
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, 9)..DisplayPoint::new(0, 9),
3928 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
3929 ]
3930 );
3931 });
3932
3933 view.update(cx, |view, cx| {
3934 view.move_right(&MoveRight, cx);
3935 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
3936 assert_eq!(
3937 view.selection_ranges(cx),
3938 &[
3939 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
3940 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
3941 ]
3942 );
3943 });
3944
3945 view.update(cx, |view, cx| {
3946 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
3947 assert_eq!(
3948 view.selection_ranges(cx),
3949 &[
3950 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 7),
3951 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 2),
3952 ]
3953 );
3954 });
3955
3956 view.update(cx, |view, cx| {
3957 view.select_to_next_word_boundary(&SelectToNextWordBoundary, 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
3968 #[gpui::test]
3969 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
3970 let buffer =
3971 cx.add_model(|cx| Buffer::new(0, "use one::{\n two::three::four::five\n};", cx));
3972 let settings = EditorSettings::test(&cx);
3973 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3974
3975 view.update(cx, |view, cx| {
3976 view.set_wrap_width(140., cx);
3977 assert_eq!(
3978 view.display_text(cx),
3979 "use one::{\n two::three::\n four::five\n};"
3980 );
3981
3982 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx)
3983 .unwrap();
3984
3985 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
3986 assert_eq!(
3987 view.selection_ranges(cx),
3988 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
3989 );
3990
3991 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
3992 assert_eq!(
3993 view.selection_ranges(cx),
3994 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
3995 );
3996
3997 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
3998 assert_eq!(
3999 view.selection_ranges(cx),
4000 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
4001 );
4002
4003 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4004 assert_eq!(
4005 view.selection_ranges(cx),
4006 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
4007 );
4008
4009 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4010 assert_eq!(
4011 view.selection_ranges(cx),
4012 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
4013 );
4014
4015 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4016 assert_eq!(
4017 view.selection_ranges(cx),
4018 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
4019 );
4020 });
4021 }
4022
4023 #[gpui::test]
4024 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
4025 let buffer = cx.add_model(|cx| Buffer::new(0, "one two three four", cx));
4026 let settings = EditorSettings::test(&cx);
4027 let (_, view) = cx.add_window(Default::default(), |cx| {
4028 build_editor(buffer.clone(), settings, cx)
4029 });
4030
4031 view.update(cx, |view, cx| {
4032 view.select_display_ranges(
4033 &[
4034 // an empty selection - the preceding word fragment is deleted
4035 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4036 // characters selected - they are deleted
4037 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
4038 ],
4039 cx,
4040 )
4041 .unwrap();
4042 view.delete_to_previous_word_boundary(&DeleteToPreviousWordBoundary, cx);
4043 });
4044
4045 assert_eq!(buffer.read(cx).text(), "e two te four");
4046
4047 view.update(cx, |view, cx| {
4048 view.select_display_ranges(
4049 &[
4050 // an empty selection - the following word fragment is deleted
4051 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4052 // characters selected - they are deleted
4053 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
4054 ],
4055 cx,
4056 )
4057 .unwrap();
4058 view.delete_to_next_word_boundary(&DeleteToNextWordBoundary, cx);
4059 });
4060
4061 assert_eq!(buffer.read(cx).text(), "e t te our");
4062 }
4063
4064 #[gpui::test]
4065 fn test_newline(cx: &mut gpui::MutableAppContext) {
4066 let buffer = cx.add_model(|cx| Buffer::new(0, "aaaa\n bbbb\n", cx));
4067 let settings = EditorSettings::test(&cx);
4068 let (_, view) = cx.add_window(Default::default(), |cx| {
4069 build_editor(buffer.clone(), settings, cx)
4070 });
4071
4072 view.update(cx, |view, cx| {
4073 view.select_display_ranges(
4074 &[
4075 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4076 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
4077 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
4078 ],
4079 cx,
4080 )
4081 .unwrap();
4082
4083 view.newline(&Newline, cx);
4084 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
4085 });
4086 }
4087
4088 #[gpui::test]
4089 fn test_backspace(cx: &mut gpui::MutableAppContext) {
4090 let buffer = cx.add_model(|cx| {
4091 Buffer::new(
4092 0,
4093 "one two three\nfour five six\nseven eight nine\nten\n",
4094 cx,
4095 )
4096 });
4097 let settings = EditorSettings::test(&cx);
4098 let (_, view) = cx.add_window(Default::default(), |cx| {
4099 build_editor(buffer.clone(), settings, cx)
4100 });
4101
4102 view.update(cx, |view, cx| {
4103 view.select_display_ranges(
4104 &[
4105 // an empty selection - the preceding character is deleted
4106 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4107 // one character selected - it is deleted
4108 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
4109 // a line suffix selected - it is deleted
4110 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
4111 ],
4112 cx,
4113 )
4114 .unwrap();
4115 view.backspace(&Backspace, cx);
4116 });
4117
4118 assert_eq!(
4119 buffer.read(cx).text(),
4120 "oe two three\nfou five six\nseven ten\n"
4121 );
4122 }
4123
4124 #[gpui::test]
4125 fn test_delete(cx: &mut gpui::MutableAppContext) {
4126 let buffer = cx.add_model(|cx| {
4127 Buffer::new(
4128 0,
4129 "one two three\nfour five six\nseven eight nine\nten\n",
4130 cx,
4131 )
4132 });
4133 let settings = EditorSettings::test(&cx);
4134 let (_, view) = cx.add_window(Default::default(), |cx| {
4135 build_editor(buffer.clone(), settings, cx)
4136 });
4137
4138 view.update(cx, |view, cx| {
4139 view.select_display_ranges(
4140 &[
4141 // an empty selection - the following character is deleted
4142 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4143 // one character selected - it is deleted
4144 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
4145 // a line suffix selected - it is deleted
4146 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
4147 ],
4148 cx,
4149 )
4150 .unwrap();
4151 view.delete(&Delete, cx);
4152 });
4153
4154 assert_eq!(
4155 buffer.read(cx).text(),
4156 "on two three\nfou five six\nseven ten\n"
4157 );
4158 }
4159
4160 #[gpui::test]
4161 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
4162 let settings = EditorSettings::test(&cx);
4163 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\ndef\nghi\n", cx));
4164 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4165 view.update(cx, |view, cx| {
4166 view.select_display_ranges(
4167 &[
4168 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4169 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
4170 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
4171 ],
4172 cx,
4173 )
4174 .unwrap();
4175 view.delete_line(&DeleteLine, cx);
4176 assert_eq!(view.display_text(cx), "ghi");
4177 assert_eq!(
4178 view.selection_ranges(cx),
4179 vec![
4180 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4181 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
4182 ]
4183 );
4184 });
4185
4186 let settings = EditorSettings::test(&cx);
4187 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\ndef\nghi\n", cx));
4188 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4189 view.update(cx, |view, cx| {
4190 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx)
4191 .unwrap();
4192 view.delete_line(&DeleteLine, cx);
4193 assert_eq!(view.display_text(cx), "ghi\n");
4194 assert_eq!(
4195 view.selection_ranges(cx),
4196 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
4197 );
4198 });
4199 }
4200
4201 #[gpui::test]
4202 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
4203 let settings = EditorSettings::test(&cx);
4204 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\ndef\nghi\n", cx));
4205 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4206 view.update(cx, |view, cx| {
4207 view.select_display_ranges(
4208 &[
4209 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
4210 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4211 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4212 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
4213 ],
4214 cx,
4215 )
4216 .unwrap();
4217 view.duplicate_line(&DuplicateLine, cx);
4218 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
4219 assert_eq!(
4220 view.selection_ranges(cx),
4221 vec![
4222 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
4223 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
4224 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
4225 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
4226 ]
4227 );
4228 });
4229
4230 let settings = EditorSettings::test(&cx);
4231 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\ndef\nghi\n", cx));
4232 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4233 view.update(cx, |view, cx| {
4234 view.select_display_ranges(
4235 &[
4236 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
4237 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
4238 ],
4239 cx,
4240 )
4241 .unwrap();
4242 view.duplicate_line(&DuplicateLine, cx);
4243 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
4244 assert_eq!(
4245 view.selection_ranges(cx),
4246 vec![
4247 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
4248 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
4249 ]
4250 );
4251 });
4252 }
4253
4254 #[gpui::test]
4255 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
4256 let settings = EditorSettings::test(&cx);
4257 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(10, 5), cx));
4258 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4259 view.update(cx, |view, cx| {
4260 view.fold_ranges(
4261 vec![
4262 Point::new(0, 2)..Point::new(1, 2),
4263 Point::new(2, 3)..Point::new(4, 1),
4264 Point::new(7, 0)..Point::new(8, 4),
4265 ],
4266 cx,
4267 );
4268 view.select_display_ranges(
4269 &[
4270 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4271 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
4272 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
4273 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
4274 ],
4275 cx,
4276 )
4277 .unwrap();
4278 assert_eq!(
4279 view.display_text(cx),
4280 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
4281 );
4282
4283 view.move_line_up(&MoveLineUp, cx);
4284 assert_eq!(
4285 view.display_text(cx),
4286 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
4287 );
4288 assert_eq!(
4289 view.selection_ranges(cx),
4290 vec![
4291 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4292 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4293 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
4294 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
4295 ]
4296 );
4297 });
4298
4299 view.update(cx, |view, cx| {
4300 view.move_line_down(&MoveLineDown, cx);
4301 assert_eq!(
4302 view.display_text(cx),
4303 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
4304 );
4305 assert_eq!(
4306 view.selection_ranges(cx),
4307 vec![
4308 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
4309 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
4310 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
4311 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
4312 ]
4313 );
4314 });
4315
4316 view.update(cx, |view, cx| {
4317 view.move_line_down(&MoveLineDown, cx);
4318 assert_eq!(
4319 view.display_text(cx),
4320 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
4321 );
4322 assert_eq!(
4323 view.selection_ranges(cx),
4324 vec![
4325 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4326 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
4327 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
4328 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
4329 ]
4330 );
4331 });
4332
4333 view.update(cx, |view, cx| {
4334 view.move_line_up(&MoveLineUp, cx);
4335 assert_eq!(
4336 view.display_text(cx),
4337 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
4338 );
4339 assert_eq!(
4340 view.selection_ranges(cx),
4341 vec![
4342 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
4343 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4344 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
4345 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
4346 ]
4347 );
4348 });
4349 }
4350
4351 #[gpui::test]
4352 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
4353 let buffer = cx.add_model(|cx| Buffer::new(0, "one✅ two three four five six ", cx));
4354 let settings = EditorSettings::test(&cx);
4355 let view = cx
4356 .add_window(Default::default(), |cx| {
4357 build_editor(buffer.clone(), settings, cx)
4358 })
4359 .1;
4360
4361 // Cut with three selections. Clipboard text is divided into three slices.
4362 view.update(cx, |view, cx| {
4363 view.select_ranges(vec![0..7, 11..17, 22..27], false, cx);
4364 view.cut(&Cut, cx);
4365 assert_eq!(view.display_text(cx), "two four six ");
4366 });
4367
4368 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
4369 view.update(cx, |view, cx| {
4370 view.select_ranges(vec![4..4, 9..9, 13..13], false, cx);
4371 view.paste(&Paste, cx);
4372 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
4373 assert_eq!(
4374 view.selection_ranges(cx),
4375 &[
4376 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
4377 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
4378 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
4379 ]
4380 );
4381 });
4382
4383 // Paste again but with only two cursors. Since the number of cursors doesn't
4384 // match the number of slices in the clipboard, the entire clipboard text
4385 // is pasted at each cursor.
4386 view.update(cx, |view, cx| {
4387 view.select_ranges(vec![0..0, 31..31], false, cx);
4388 view.handle_input(&Input("( ".into()), cx);
4389 view.paste(&Paste, cx);
4390 view.handle_input(&Input(") ".into()), cx);
4391 assert_eq!(
4392 view.display_text(cx),
4393 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
4394 );
4395 });
4396
4397 view.update(cx, |view, cx| {
4398 view.select_ranges(vec![0..0], false, cx);
4399 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
4400 assert_eq!(
4401 view.display_text(cx),
4402 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
4403 );
4404 });
4405
4406 // Cut with three selections, one of which is full-line.
4407 view.update(cx, |view, cx| {
4408 view.select_display_ranges(
4409 &[
4410 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
4411 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
4412 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
4413 ],
4414 cx,
4415 )
4416 .unwrap();
4417 view.cut(&Cut, cx);
4418 assert_eq!(
4419 view.display_text(cx),
4420 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
4421 );
4422 });
4423
4424 // Paste with three selections, noticing how the copied selection that was full-line
4425 // gets inserted before the second cursor.
4426 view.update(cx, |view, cx| {
4427 view.select_display_ranges(
4428 &[
4429 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4430 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
4431 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
4432 ],
4433 cx,
4434 )
4435 .unwrap();
4436 view.paste(&Paste, cx);
4437 assert_eq!(
4438 view.display_text(cx),
4439 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
4440 );
4441 assert_eq!(
4442 view.selection_ranges(cx),
4443 &[
4444 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4445 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4446 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
4447 ]
4448 );
4449 });
4450
4451 // Copy with a single cursor only, which writes the whole line into the clipboard.
4452 view.update(cx, |view, cx| {
4453 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx)
4454 .unwrap();
4455 view.copy(&Copy, cx);
4456 });
4457
4458 // Paste with three selections, noticing how the copied full-line selection is inserted
4459 // before the empty selections but replaces the selection that is non-empty.
4460 view.update(cx, |view, cx| {
4461 view.select_display_ranges(
4462 &[
4463 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4464 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
4465 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4466 ],
4467 cx,
4468 )
4469 .unwrap();
4470 view.paste(&Paste, cx);
4471 assert_eq!(
4472 view.display_text(cx),
4473 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
4474 );
4475 assert_eq!(
4476 view.selection_ranges(cx),
4477 &[
4478 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
4479 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
4480 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
4481 ]
4482 );
4483 });
4484 }
4485
4486 #[gpui::test]
4487 fn test_select_all(cx: &mut gpui::MutableAppContext) {
4488 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\nde\nfgh", cx));
4489 let settings = EditorSettings::test(&cx);
4490 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4491 view.update(cx, |view, cx| {
4492 view.select_all(&SelectAll, cx);
4493 assert_eq!(
4494 view.selection_ranges(cx),
4495 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
4496 );
4497 });
4498 }
4499
4500 #[gpui::test]
4501 fn test_select_line(cx: &mut gpui::MutableAppContext) {
4502 let settings = EditorSettings::test(&cx);
4503 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(6, 5), cx));
4504 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4505 view.update(cx, |view, cx| {
4506 view.select_display_ranges(
4507 &[
4508 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
4509 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4510 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4511 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
4512 ],
4513 cx,
4514 )
4515 .unwrap();
4516 view.select_line(&SelectLine, cx);
4517 assert_eq!(
4518 view.selection_ranges(cx),
4519 vec![
4520 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
4521 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
4522 ]
4523 );
4524 });
4525
4526 view.update(cx, |view, cx| {
4527 view.select_line(&SelectLine, cx);
4528 assert_eq!(
4529 view.selection_ranges(cx),
4530 vec![
4531 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
4532 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
4533 ]
4534 );
4535 });
4536
4537 view.update(cx, |view, cx| {
4538 view.select_line(&SelectLine, cx);
4539 assert_eq!(
4540 view.selection_ranges(cx),
4541 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
4542 );
4543 });
4544 }
4545
4546 #[gpui::test]
4547 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
4548 let settings = EditorSettings::test(&cx);
4549 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(9, 5), cx));
4550 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4551 view.update(cx, |view, cx| {
4552 view.fold_ranges(
4553 vec![
4554 Point::new(0, 2)..Point::new(1, 2),
4555 Point::new(2, 3)..Point::new(4, 1),
4556 Point::new(7, 0)..Point::new(8, 4),
4557 ],
4558 cx,
4559 );
4560 view.select_display_ranges(
4561 &[
4562 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
4563 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4564 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4565 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
4566 ],
4567 cx,
4568 )
4569 .unwrap();
4570 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
4571 });
4572
4573 view.update(cx, |view, cx| {
4574 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
4575 assert_eq!(
4576 view.display_text(cx),
4577 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
4578 );
4579 assert_eq!(
4580 view.selection_ranges(cx),
4581 [
4582 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4583 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4584 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
4585 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
4586 ]
4587 );
4588 });
4589
4590 view.update(cx, |view, cx| {
4591 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx)
4592 .unwrap();
4593 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
4594 assert_eq!(
4595 view.display_text(cx),
4596 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
4597 );
4598 assert_eq!(
4599 view.selection_ranges(cx),
4600 [
4601 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
4602 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
4603 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
4604 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
4605 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
4606 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
4607 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
4608 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
4609 ]
4610 );
4611 });
4612 }
4613
4614 #[gpui::test]
4615 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
4616 let settings = EditorSettings::test(&cx);
4617 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\ndefghi\n\njk\nlmno\n", cx));
4618 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4619
4620 view.update(cx, |view, cx| {
4621 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx)
4622 .unwrap();
4623 });
4624 view.update(cx, |view, cx| {
4625 view.add_selection_above(&AddSelectionAbove, cx);
4626 assert_eq!(
4627 view.selection_ranges(cx),
4628 vec![
4629 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4630 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
4631 ]
4632 );
4633 });
4634
4635 view.update(cx, |view, cx| {
4636 view.add_selection_above(&AddSelectionAbove, cx);
4637 assert_eq!(
4638 view.selection_ranges(cx),
4639 vec![
4640 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4641 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
4642 ]
4643 );
4644 });
4645
4646 view.update(cx, |view, cx| {
4647 view.add_selection_below(&AddSelectionBelow, cx);
4648 assert_eq!(
4649 view.selection_ranges(cx),
4650 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
4651 );
4652 });
4653
4654 view.update(cx, |view, cx| {
4655 view.add_selection_below(&AddSelectionBelow, cx);
4656 assert_eq!(
4657 view.selection_ranges(cx),
4658 vec![
4659 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
4660 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
4661 ]
4662 );
4663 });
4664
4665 view.update(cx, |view, cx| {
4666 view.add_selection_below(&AddSelectionBelow, cx);
4667 assert_eq!(
4668 view.selection_ranges(cx),
4669 vec![
4670 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
4671 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
4672 ]
4673 );
4674 });
4675
4676 view.update(cx, |view, cx| {
4677 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx)
4678 .unwrap();
4679 });
4680 view.update(cx, |view, cx| {
4681 view.add_selection_below(&AddSelectionBelow, cx);
4682 assert_eq!(
4683 view.selection_ranges(cx),
4684 vec![
4685 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
4686 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
4687 ]
4688 );
4689 });
4690
4691 view.update(cx, |view, cx| {
4692 view.add_selection_below(&AddSelectionBelow, cx);
4693 assert_eq!(
4694 view.selection_ranges(cx),
4695 vec![
4696 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
4697 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
4698 ]
4699 );
4700 });
4701
4702 view.update(cx, |view, cx| {
4703 view.add_selection_above(&AddSelectionAbove, cx);
4704 assert_eq!(
4705 view.selection_ranges(cx),
4706 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
4707 );
4708 });
4709
4710 view.update(cx, |view, cx| {
4711 view.add_selection_above(&AddSelectionAbove, cx);
4712 assert_eq!(
4713 view.selection_ranges(cx),
4714 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
4715 );
4716 });
4717
4718 view.update(cx, |view, cx| {
4719 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx)
4720 .unwrap();
4721 view.add_selection_below(&AddSelectionBelow, cx);
4722 assert_eq!(
4723 view.selection_ranges(cx),
4724 vec![
4725 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
4726 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
4727 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
4728 ]
4729 );
4730 });
4731
4732 view.update(cx, |view, cx| {
4733 view.add_selection_below(&AddSelectionBelow, cx);
4734 assert_eq!(
4735 view.selection_ranges(cx),
4736 vec![
4737 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
4738 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
4739 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
4740 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
4741 ]
4742 );
4743 });
4744
4745 view.update(cx, |view, cx| {
4746 view.add_selection_above(&AddSelectionAbove, cx);
4747 assert_eq!(
4748 view.selection_ranges(cx),
4749 vec![
4750 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
4751 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
4752 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
4753 ]
4754 );
4755 });
4756
4757 view.update(cx, |view, cx| {
4758 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx)
4759 .unwrap();
4760 });
4761 view.update(cx, |view, cx| {
4762 view.add_selection_above(&AddSelectionAbove, cx);
4763 assert_eq!(
4764 view.selection_ranges(cx),
4765 vec![
4766 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
4767 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
4768 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
4769 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
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, 3)..DisplayPoint::new(1, 1),
4780 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
4781 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
4782 ]
4783 );
4784 });
4785 }
4786
4787 #[gpui::test]
4788 async fn test_select_larger_smaller_syntax_node(mut cx: gpui::TestAppContext) {
4789 let settings = cx.read(EditorSettings::test);
4790 let language = Some(Arc::new(Language::new(
4791 LanguageConfig::default(),
4792 tree_sitter_rust::language(),
4793 )));
4794
4795 let text = r#"
4796 use mod1::mod2::{mod3, mod4};
4797
4798 fn fn_1(param1: bool, param2: &str) {
4799 let var1 = "text";
4800 }
4801 "#
4802 .unindent();
4803
4804 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
4805 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
4806 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing())
4807 .await;
4808
4809 view.update(&mut cx, |view, cx| {
4810 view.select_display_ranges(
4811 &[
4812 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
4813 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
4814 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
4815 ],
4816 cx,
4817 )
4818 .unwrap();
4819 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
4820 });
4821 assert_eq!(
4822 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4823 &[
4824 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
4825 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
4826 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
4827 ]
4828 );
4829
4830 view.update(&mut cx, |view, cx| {
4831 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
4832 });
4833 assert_eq!(
4834 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4835 &[
4836 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
4837 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
4838 ]
4839 );
4840
4841 view.update(&mut cx, |view, cx| {
4842 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
4843 });
4844 assert_eq!(
4845 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4846 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
4847 );
4848
4849 // Trying to expand the selected syntax node one more time has no effect.
4850 view.update(&mut cx, |view, cx| {
4851 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
4852 });
4853 assert_eq!(
4854 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4855 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
4856 );
4857
4858 view.update(&mut cx, |view, cx| {
4859 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
4860 });
4861 assert_eq!(
4862 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4863 &[
4864 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
4865 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
4866 ]
4867 );
4868
4869 view.update(&mut cx, |view, cx| {
4870 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
4871 });
4872 assert_eq!(
4873 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4874 &[
4875 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
4876 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
4877 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
4878 ]
4879 );
4880
4881 view.update(&mut cx, |view, cx| {
4882 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
4883 });
4884 assert_eq!(
4885 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4886 &[
4887 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
4888 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
4889 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
4890 ]
4891 );
4892
4893 // Trying to shrink the selected syntax node one more time has no effect.
4894 view.update(&mut cx, |view, cx| {
4895 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
4896 });
4897 assert_eq!(
4898 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4899 &[
4900 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
4901 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
4902 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
4903 ]
4904 );
4905
4906 // Ensure that we keep expanding the selection if the larger selection starts or ends within
4907 // a fold.
4908 view.update(&mut cx, |view, cx| {
4909 view.fold_ranges(
4910 vec![
4911 Point::new(0, 21)..Point::new(0, 24),
4912 Point::new(3, 20)..Point::new(3, 22),
4913 ],
4914 cx,
4915 );
4916 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
4917 });
4918 assert_eq!(
4919 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4920 &[
4921 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
4922 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
4923 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
4924 ]
4925 );
4926 }
4927
4928 #[gpui::test]
4929 async fn test_autoclose_pairs(mut cx: gpui::TestAppContext) {
4930 let settings = cx.read(EditorSettings::test);
4931 let language = Some(Arc::new(Language::new(
4932 LanguageConfig {
4933 brackets: vec![
4934 BracketPair {
4935 start: "{".to_string(),
4936 end: "}".to_string(),
4937 close: true,
4938 newline: true,
4939 },
4940 BracketPair {
4941 start: "/*".to_string(),
4942 end: " */".to_string(),
4943 close: true,
4944 newline: true,
4945 },
4946 ],
4947 ..Default::default()
4948 },
4949 tree_sitter_rust::language(),
4950 )));
4951
4952 let text = r#"
4953 a
4954
4955 /
4956
4957 "#
4958 .unindent();
4959
4960 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
4961 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
4962 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing())
4963 .await;
4964
4965 view.update(&mut cx, |view, cx| {
4966 view.select_display_ranges(
4967 &[
4968 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
4969 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4970 ],
4971 cx,
4972 )
4973 .unwrap();
4974 view.handle_input(&Input("{".to_string()), cx);
4975 view.handle_input(&Input("{".to_string()), cx);
4976 view.handle_input(&Input("{".to_string()), cx);
4977 assert_eq!(
4978 view.text(cx),
4979 "
4980 {{{}}}
4981 {{{}}}
4982 /
4983
4984 "
4985 .unindent()
4986 );
4987
4988 view.move_right(&MoveRight, cx);
4989 view.handle_input(&Input("}".to_string()), cx);
4990 view.handle_input(&Input("}".to_string()), cx);
4991 view.handle_input(&Input("}".to_string()), cx);
4992 assert_eq!(
4993 view.text(cx),
4994 "
4995 {{{}}}}
4996 {{{}}}}
4997 /
4998
4999 "
5000 .unindent()
5001 );
5002
5003 view.undo(&Undo, cx);
5004 view.handle_input(&Input("/".to_string()), cx);
5005 view.handle_input(&Input("*".to_string()), cx);
5006 assert_eq!(
5007 view.text(cx),
5008 "
5009 /* */
5010 /* */
5011 /
5012
5013 "
5014 .unindent()
5015 );
5016
5017 view.undo(&Undo, cx);
5018 view.select_display_ranges(
5019 &[
5020 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5021 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5022 ],
5023 cx,
5024 )
5025 .unwrap();
5026 view.handle_input(&Input("*".to_string()), cx);
5027 assert_eq!(
5028 view.text(cx),
5029 "
5030 a
5031
5032 /*
5033 *
5034 "
5035 .unindent()
5036 );
5037 });
5038 }
5039
5040 #[gpui::test]
5041 async fn test_extra_newline_insertion(mut cx: gpui::TestAppContext) {
5042 let settings = cx.read(EditorSettings::test);
5043 let language = Some(Arc::new(Language::new(
5044 LanguageConfig {
5045 brackets: vec![
5046 BracketPair {
5047 start: "{".to_string(),
5048 end: "}".to_string(),
5049 close: true,
5050 newline: true,
5051 },
5052 BracketPair {
5053 start: "/* ".to_string(),
5054 end: " */".to_string(),
5055 close: true,
5056 newline: true,
5057 },
5058 ],
5059 ..Default::default()
5060 },
5061 tree_sitter_rust::language(),
5062 )));
5063
5064 let text = concat!(
5065 "{ }\n", // Suppress rustfmt
5066 " x\n", //
5067 " /* */\n", //
5068 "x\n", //
5069 "{{} }\n", //
5070 );
5071
5072 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
5073 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
5074 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing())
5075 .await;
5076
5077 view.update(&mut cx, |view, cx| {
5078 view.select_display_ranges(
5079 &[
5080 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
5081 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
5082 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
5083 ],
5084 cx,
5085 )
5086 .unwrap();
5087 view.newline(&Newline, cx);
5088
5089 assert_eq!(
5090 view.buffer().read(cx).text(),
5091 concat!(
5092 "{ \n", // Suppress rustfmt
5093 "\n", //
5094 "}\n", //
5095 " x\n", //
5096 " /* \n", //
5097 " \n", //
5098 " */\n", //
5099 "x\n", //
5100 "{{} \n", //
5101 "}\n", //
5102 )
5103 );
5104 });
5105 }
5106
5107 impl Editor {
5108 fn selection_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
5109 self.selections_in_range(
5110 self.selection_set_id,
5111 DisplayPoint::zero()..self.max_point(cx),
5112 cx,
5113 )
5114 .collect::<Vec<_>>()
5115 }
5116 }
5117
5118 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
5119 let point = DisplayPoint::new(row as u32, column as u32);
5120 point..point
5121 }
5122
5123 fn build_editor(
5124 buffer: ModelHandle<Buffer>,
5125 settings: EditorSettings,
5126 cx: &mut ViewContext<Editor>,
5127 ) -> Editor {
5128 Editor::for_buffer(buffer, move |_| settings.clone(), cx)
5129 }
5130}
5131
5132trait RangeExt<T> {
5133 fn sorted(&self) -> Range<T>;
5134 fn to_inclusive(&self) -> RangeInclusive<T>;
5135}
5136
5137impl<T: Ord + Clone> RangeExt<T> for Range<T> {
5138 fn sorted(&self) -> Self {
5139 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
5140 }
5141
5142 fn to_inclusive(&self) -> RangeInclusive<T> {
5143 self.start.clone()..=self.end.clone()
5144 }
5145}