1pub mod display_map;
2mod element;
3pub mod items;
4pub mod movement;
5
6#[cfg(test)]
7mod test;
8
9use aho_corasick::AhoCorasick;
10use clock::ReplicaId;
11pub use display_map::DisplayPoint;
12use display_map::*;
13pub use element::*;
14use gpui::{
15 action,
16 elements::Text,
17 geometry::vector::{vec2f, Vector2F},
18 keymap::Binding,
19 text_layout, AppContext, ClipboardItem, Element, ElementBox, Entity, ModelHandle,
20 MutableAppContext, RenderContext, View, ViewContext, WeakViewHandle,
21};
22use items::BufferItemHandle;
23use language::*;
24use serde::{Deserialize, Serialize};
25use smallvec::SmallVec;
26use smol::Timer;
27use std::{
28 cell::RefCell,
29 cmp,
30 collections::HashMap,
31 iter, mem,
32 ops::{Deref, Range, RangeInclusive},
33 rc::Rc,
34 sync::Arc,
35 time::Duration,
36};
37use sum_tree::Bias;
38use text::rope::TextDimension;
39use theme::{DiagnosticStyle, EditorStyle};
40use util::post_inc;
41use workspace::{EntryOpener, Workspace};
42
43const CURSOR_BLINK_INTERVAL: Duration = Duration::from_millis(500);
44const MAX_LINE_LEN: usize = 1024;
45
46action!(Cancel);
47action!(Backspace);
48action!(Delete);
49action!(Input, String);
50action!(Newline);
51action!(Tab);
52action!(Outdent);
53action!(DeleteLine);
54action!(DeleteToPreviousWordBoundary);
55action!(DeleteToNextWordBoundary);
56action!(DeleteToBeginningOfLine);
57action!(DeleteToEndOfLine);
58action!(CutToEndOfLine);
59action!(DuplicateLine);
60action!(MoveLineUp);
61action!(MoveLineDown);
62action!(Cut);
63action!(Copy);
64action!(Paste);
65action!(Undo);
66action!(Redo);
67action!(MoveUp);
68action!(MoveDown);
69action!(MoveLeft);
70action!(MoveRight);
71action!(MoveToPreviousWordBoundary);
72action!(MoveToNextWordBoundary);
73action!(MoveToBeginningOfLine);
74action!(MoveToEndOfLine);
75action!(MoveToBeginning);
76action!(MoveToEnd);
77action!(SelectUp);
78action!(SelectDown);
79action!(SelectLeft);
80action!(SelectRight);
81action!(SelectToPreviousWordBoundary);
82action!(SelectToNextWordBoundary);
83action!(SelectToBeginningOfLine, bool);
84action!(SelectToEndOfLine);
85action!(SelectToBeginning);
86action!(SelectToEnd);
87action!(SelectAll);
88action!(SelectLine);
89action!(SplitSelectionIntoLines);
90action!(AddSelectionAbove);
91action!(AddSelectionBelow);
92action!(SelectNext, bool);
93action!(ToggleComments);
94action!(SelectLargerSyntaxNode);
95action!(SelectSmallerSyntaxNode);
96action!(MoveToEnclosingBracket);
97action!(ShowNextDiagnostic);
98action!(PageUp);
99action!(PageDown);
100action!(Fold);
101action!(Unfold);
102action!(FoldSelectedRanges);
103action!(Scroll, Vector2F);
104action!(Select, SelectPhase);
105
106pub fn init(cx: &mut MutableAppContext, entry_openers: &mut Vec<Box<dyn EntryOpener>>) {
107 entry_openers.push(Box::new(items::BufferOpener));
108 cx.add_bindings(vec![
109 Binding::new("escape", Cancel, Some("Editor")),
110 Binding::new("backspace", Backspace, Some("Editor")),
111 Binding::new("ctrl-h", Backspace, Some("Editor")),
112 Binding::new("delete", Delete, Some("Editor")),
113 Binding::new("ctrl-d", Delete, Some("Editor")),
114 Binding::new("enter", Newline, Some("Editor && mode == full")),
115 Binding::new(
116 "alt-enter",
117 Input("\n".into()),
118 Some("Editor && mode == auto_height"),
119 ),
120 Binding::new("tab", Tab, Some("Editor")),
121 Binding::new("shift-tab", Outdent, Some("Editor")),
122 Binding::new("ctrl-shift-K", DeleteLine, Some("Editor")),
123 Binding::new(
124 "alt-backspace",
125 DeleteToPreviousWordBoundary,
126 Some("Editor"),
127 ),
128 Binding::new("alt-h", DeleteToPreviousWordBoundary, Some("Editor")),
129 Binding::new("alt-delete", DeleteToNextWordBoundary, Some("Editor")),
130 Binding::new("alt-d", DeleteToNextWordBoundary, Some("Editor")),
131 Binding::new("cmd-backspace", DeleteToBeginningOfLine, Some("Editor")),
132 Binding::new("cmd-delete", DeleteToEndOfLine, Some("Editor")),
133 Binding::new("ctrl-k", CutToEndOfLine, Some("Editor")),
134 Binding::new("cmd-shift-D", DuplicateLine, Some("Editor")),
135 Binding::new("ctrl-cmd-up", MoveLineUp, Some("Editor")),
136 Binding::new("ctrl-cmd-down", MoveLineDown, Some("Editor")),
137 Binding::new("cmd-x", Cut, Some("Editor")),
138 Binding::new("cmd-c", Copy, Some("Editor")),
139 Binding::new("cmd-v", Paste, Some("Editor")),
140 Binding::new("cmd-z", Undo, Some("Editor")),
141 Binding::new("cmd-shift-Z", Redo, Some("Editor")),
142 Binding::new("up", MoveUp, Some("Editor")),
143 Binding::new("down", MoveDown, Some("Editor")),
144 Binding::new("left", MoveLeft, Some("Editor")),
145 Binding::new("right", MoveRight, Some("Editor")),
146 Binding::new("ctrl-p", MoveUp, Some("Editor")),
147 Binding::new("ctrl-n", MoveDown, Some("Editor")),
148 Binding::new("ctrl-b", MoveLeft, Some("Editor")),
149 Binding::new("ctrl-f", MoveRight, Some("Editor")),
150 Binding::new("alt-left", MoveToPreviousWordBoundary, Some("Editor")),
151 Binding::new("alt-b", MoveToPreviousWordBoundary, Some("Editor")),
152 Binding::new("alt-right", MoveToNextWordBoundary, Some("Editor")),
153 Binding::new("alt-f", MoveToNextWordBoundary, Some("Editor")),
154 Binding::new("cmd-left", MoveToBeginningOfLine, Some("Editor")),
155 Binding::new("ctrl-a", MoveToBeginningOfLine, Some("Editor")),
156 Binding::new("cmd-right", MoveToEndOfLine, Some("Editor")),
157 Binding::new("ctrl-e", MoveToEndOfLine, Some("Editor")),
158 Binding::new("cmd-up", MoveToBeginning, Some("Editor")),
159 Binding::new("cmd-down", MoveToEnd, Some("Editor")),
160 Binding::new("shift-up", SelectUp, Some("Editor")),
161 Binding::new("ctrl-shift-P", SelectUp, Some("Editor")),
162 Binding::new("shift-down", SelectDown, Some("Editor")),
163 Binding::new("ctrl-shift-N", SelectDown, Some("Editor")),
164 Binding::new("shift-left", SelectLeft, Some("Editor")),
165 Binding::new("ctrl-shift-B", SelectLeft, Some("Editor")),
166 Binding::new("shift-right", SelectRight, Some("Editor")),
167 Binding::new("ctrl-shift-F", SelectRight, Some("Editor")),
168 Binding::new(
169 "alt-shift-left",
170 SelectToPreviousWordBoundary,
171 Some("Editor"),
172 ),
173 Binding::new("alt-shift-B", SelectToPreviousWordBoundary, Some("Editor")),
174 Binding::new("alt-shift-right", SelectToNextWordBoundary, Some("Editor")),
175 Binding::new("alt-shift-F", SelectToNextWordBoundary, Some("Editor")),
176 Binding::new(
177 "cmd-shift-left",
178 SelectToBeginningOfLine(true),
179 Some("Editor"),
180 ),
181 Binding::new(
182 "ctrl-shift-A",
183 SelectToBeginningOfLine(true),
184 Some("Editor"),
185 ),
186 Binding::new("cmd-shift-right", SelectToEndOfLine, Some("Editor")),
187 Binding::new("ctrl-shift-E", SelectToEndOfLine, Some("Editor")),
188 Binding::new("cmd-shift-up", SelectToBeginning, Some("Editor")),
189 Binding::new("cmd-shift-down", SelectToEnd, Some("Editor")),
190 Binding::new("cmd-a", SelectAll, Some("Editor")),
191 Binding::new("cmd-l", SelectLine, Some("Editor")),
192 Binding::new("cmd-shift-L", SplitSelectionIntoLines, Some("Editor")),
193 Binding::new("cmd-alt-up", AddSelectionAbove, Some("Editor")),
194 Binding::new("cmd-ctrl-p", AddSelectionAbove, Some("Editor")),
195 Binding::new("cmd-alt-down", AddSelectionBelow, Some("Editor")),
196 Binding::new("cmd-ctrl-n", AddSelectionBelow, Some("Editor")),
197 Binding::new("cmd-d", SelectNext(false), Some("Editor")),
198 Binding::new("cmd-k cmd-d", SelectNext(true), Some("Editor")),
199 Binding::new("cmd-/", ToggleComments, Some("Editor")),
200 Binding::new("alt-up", SelectLargerSyntaxNode, Some("Editor")),
201 Binding::new("ctrl-w", SelectLargerSyntaxNode, Some("Editor")),
202 Binding::new("alt-down", SelectSmallerSyntaxNode, Some("Editor")),
203 Binding::new("ctrl-shift-W", SelectSmallerSyntaxNode, Some("Editor")),
204 Binding::new("f8", ShowNextDiagnostic, Some("Editor")),
205 Binding::new("ctrl-m", MoveToEnclosingBracket, Some("Editor")),
206 Binding::new("pageup", PageUp, Some("Editor")),
207 Binding::new("pagedown", PageDown, Some("Editor")),
208 Binding::new("alt-cmd-[", Fold, Some("Editor")),
209 Binding::new("alt-cmd-]", Unfold, Some("Editor")),
210 Binding::new("alt-cmd-f", FoldSelectedRanges, Some("Editor")),
211 ]);
212
213 cx.add_action(Editor::open_new);
214 cx.add_action(|this: &mut Editor, action: &Scroll, cx| this.set_scroll_position(action.0, cx));
215 cx.add_action(Editor::select);
216 cx.add_action(Editor::cancel);
217 cx.add_action(Editor::handle_input);
218 cx.add_action(Editor::newline);
219 cx.add_action(Editor::backspace);
220 cx.add_action(Editor::delete);
221 cx.add_action(Editor::tab);
222 cx.add_action(Editor::outdent);
223 cx.add_action(Editor::delete_line);
224 cx.add_action(Editor::delete_to_previous_word_boundary);
225 cx.add_action(Editor::delete_to_next_word_boundary);
226 cx.add_action(Editor::delete_to_beginning_of_line);
227 cx.add_action(Editor::delete_to_end_of_line);
228 cx.add_action(Editor::cut_to_end_of_line);
229 cx.add_action(Editor::duplicate_line);
230 cx.add_action(Editor::move_line_up);
231 cx.add_action(Editor::move_line_down);
232 cx.add_action(Editor::cut);
233 cx.add_action(Editor::copy);
234 cx.add_action(Editor::paste);
235 cx.add_action(Editor::undo);
236 cx.add_action(Editor::redo);
237 cx.add_action(Editor::move_up);
238 cx.add_action(Editor::move_down);
239 cx.add_action(Editor::move_left);
240 cx.add_action(Editor::move_right);
241 cx.add_action(Editor::move_to_previous_word_boundary);
242 cx.add_action(Editor::move_to_next_word_boundary);
243 cx.add_action(Editor::move_to_beginning_of_line);
244 cx.add_action(Editor::move_to_end_of_line);
245 cx.add_action(Editor::move_to_beginning);
246 cx.add_action(Editor::move_to_end);
247 cx.add_action(Editor::select_up);
248 cx.add_action(Editor::select_down);
249 cx.add_action(Editor::select_left);
250 cx.add_action(Editor::select_right);
251 cx.add_action(Editor::select_to_previous_word_boundary);
252 cx.add_action(Editor::select_to_next_word_boundary);
253 cx.add_action(Editor::select_to_beginning_of_line);
254 cx.add_action(Editor::select_to_end_of_line);
255 cx.add_action(Editor::select_to_beginning);
256 cx.add_action(Editor::select_to_end);
257 cx.add_action(Editor::select_all);
258 cx.add_action(Editor::select_line);
259 cx.add_action(Editor::split_selection_into_lines);
260 cx.add_action(Editor::add_selection_above);
261 cx.add_action(Editor::add_selection_below);
262 cx.add_action(Editor::select_next);
263 cx.add_action(Editor::toggle_comments);
264 cx.add_action(Editor::select_larger_syntax_node);
265 cx.add_action(Editor::select_smaller_syntax_node);
266 cx.add_action(Editor::move_to_enclosing_bracket);
267 cx.add_action(Editor::show_next_diagnostic);
268 cx.add_action(Editor::page_up);
269 cx.add_action(Editor::page_down);
270 cx.add_action(Editor::fold);
271 cx.add_action(Editor::unfold);
272 cx.add_action(Editor::fold_selected_ranges);
273}
274
275trait SelectionExt {
276 fn display_range(&self, map: &DisplayMapSnapshot) -> Range<DisplayPoint>;
277 fn spanned_rows(
278 &self,
279 include_end_if_at_line_start: bool,
280 map: &DisplayMapSnapshot,
281 ) -> SpannedRows;
282}
283
284struct SpannedRows {
285 buffer_rows: Range<u32>,
286 display_rows: Range<u32>,
287}
288
289#[derive(Clone, Debug)]
290pub enum SelectPhase {
291 Begin {
292 position: DisplayPoint,
293 add: bool,
294 click_count: usize,
295 },
296 BeginColumnar {
297 position: DisplayPoint,
298 overshoot: u32,
299 },
300 Extend {
301 position: DisplayPoint,
302 click_count: usize,
303 },
304 Update {
305 position: DisplayPoint,
306 overshoot: u32,
307 scroll_position: Vector2F,
308 },
309 End,
310}
311
312#[derive(Clone, Debug)]
313enum SelectMode {
314 Character,
315 Word(Range<Anchor>),
316 Line(Range<Anchor>),
317 All,
318}
319
320#[derive(PartialEq, Eq)]
321pub enum Autoscroll {
322 Fit,
323 Center,
324 Newest,
325}
326
327#[derive(Copy, Clone, PartialEq, Eq)]
328pub enum EditorMode {
329 SingleLine,
330 AutoHeight { max_lines: usize },
331 Full,
332}
333
334#[derive(Clone)]
335pub struct EditorSettings {
336 pub tab_size: usize,
337 pub soft_wrap: SoftWrap,
338 pub style: EditorStyle,
339}
340
341#[derive(Clone)]
342pub enum SoftWrap {
343 None,
344 EditorWidth,
345 Column(u32),
346}
347
348pub struct Editor {
349 handle: WeakViewHandle<Self>,
350 buffer: ModelHandle<Buffer>,
351 display_map: ModelHandle<DisplayMap>,
352 selection_set_id: SelectionSetId,
353 pending_selection: Option<PendingSelection>,
354 columnar_selection_tail: Option<Anchor>,
355 next_selection_id: usize,
356 add_selections_state: Option<AddSelectionsState>,
357 select_next_state: Option<SelectNextState>,
358 autoclose_stack: Vec<BracketPairState>,
359 select_larger_syntax_node_stack: Vec<Box<[Selection<usize>]>>,
360 active_diagnostics: Option<ActiveDiagnosticGroup>,
361 scroll_position: Vector2F,
362 scroll_top_anchor: Anchor,
363 autoscroll_request: Option<Autoscroll>,
364 build_settings: Rc<RefCell<dyn Fn(&AppContext) -> EditorSettings>>,
365 focused: bool,
366 show_local_cursors: bool,
367 blink_epoch: usize,
368 blinking_paused: bool,
369 mode: EditorMode,
370 placeholder_text: Option<Arc<str>>,
371 highlighted_row: Option<u32>,
372}
373
374pub struct Snapshot {
375 pub mode: EditorMode,
376 pub display_snapshot: DisplayMapSnapshot,
377 pub placeholder_text: Option<Arc<str>>,
378 is_focused: bool,
379 scroll_position: Vector2F,
380 scroll_top_anchor: Anchor,
381}
382
383struct PendingSelection {
384 selection: Selection<Anchor>,
385 mode: SelectMode,
386}
387
388struct AddSelectionsState {
389 above: bool,
390 stack: Vec<usize>,
391}
392
393struct SelectNextState {
394 query: AhoCorasick,
395 wordwise: bool,
396 done: bool,
397}
398
399#[derive(Debug)]
400struct BracketPairState {
401 ranges: AnchorRangeSet,
402 pair: BracketPair,
403}
404
405#[derive(Debug)]
406struct ActiveDiagnosticGroup {
407 primary_range: Range<Anchor>,
408 primary_message: String,
409 blocks: HashMap<BlockId, Diagnostic>,
410 is_valid: bool,
411}
412
413#[derive(Serialize, Deserialize)]
414struct ClipboardSelection {
415 len: usize,
416 is_entire_line: bool,
417}
418
419impl Editor {
420 pub fn single_line(
421 build_settings: impl 'static + Fn(&AppContext) -> EditorSettings,
422 cx: &mut ViewContext<Self>,
423 ) -> Self {
424 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
425 let mut view = Self::for_buffer(buffer, build_settings, cx);
426 view.mode = EditorMode::SingleLine;
427 view
428 }
429
430 pub fn auto_height(
431 max_lines: usize,
432 build_settings: impl 'static + Fn(&AppContext) -> EditorSettings,
433 cx: &mut ViewContext<Self>,
434 ) -> Self {
435 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
436 let mut view = Self::for_buffer(buffer, build_settings, cx);
437 view.mode = EditorMode::AutoHeight { max_lines };
438 view
439 }
440
441 pub fn for_buffer(
442 buffer: ModelHandle<Buffer>,
443 build_settings: impl 'static + Fn(&AppContext) -> EditorSettings,
444 cx: &mut ViewContext<Self>,
445 ) -> Self {
446 Self::new(buffer, Rc::new(RefCell::new(build_settings)), cx)
447 }
448
449 pub fn clone(&self, cx: &mut ViewContext<Self>) -> Self {
450 let mut clone = Self::new(self.buffer.clone(), self.build_settings.clone(), cx);
451 clone.scroll_position = self.scroll_position;
452 clone.scroll_top_anchor = self.scroll_top_anchor.clone();
453 clone
454 }
455
456 pub fn new(
457 buffer: ModelHandle<Buffer>,
458 build_settings: Rc<RefCell<dyn Fn(&AppContext) -> EditorSettings>>,
459 cx: &mut ViewContext<Self>,
460 ) -> Self {
461 let settings = build_settings.borrow_mut()(cx);
462 let display_map = cx.add_model(|cx| {
463 DisplayMap::new(
464 buffer.clone(),
465 settings.tab_size,
466 settings.style.text.font_id,
467 settings.style.text.font_size,
468 None,
469 cx,
470 )
471 });
472 cx.observe(&buffer, Self::on_buffer_changed).detach();
473 cx.subscribe(&buffer, Self::on_buffer_event).detach();
474 cx.observe(&display_map, Self::on_display_map_changed)
475 .detach();
476
477 let mut next_selection_id = 0;
478 let selection_set_id = buffer.update(cx, |buffer, cx| {
479 buffer.add_selection_set(
480 &[Selection {
481 id: post_inc(&mut next_selection_id),
482 start: 0,
483 end: 0,
484 reversed: false,
485 goal: SelectionGoal::None,
486 }],
487 cx,
488 )
489 });
490 Self {
491 handle: cx.weak_handle(),
492 buffer,
493 display_map,
494 selection_set_id,
495 pending_selection: None,
496 columnar_selection_tail: None,
497 next_selection_id,
498 add_selections_state: None,
499 select_next_state: None,
500 autoclose_stack: Default::default(),
501 select_larger_syntax_node_stack: Vec::new(),
502 active_diagnostics: None,
503 build_settings,
504 scroll_position: Vector2F::zero(),
505 scroll_top_anchor: Anchor::min(),
506 autoscroll_request: None,
507 focused: false,
508 show_local_cursors: false,
509 blink_epoch: 0,
510 blinking_paused: false,
511 mode: EditorMode::Full,
512 placeholder_text: None,
513 highlighted_row: None,
514 }
515 }
516
517 pub fn open_new(
518 workspace: &mut Workspace,
519 _: &workspace::OpenNew,
520 cx: &mut ViewContext<Workspace>,
521 ) {
522 let buffer = cx.add_model(|cx| {
523 Buffer::new(0, "", cx).with_language(Some(language::PLAIN_TEXT.clone()), None, cx)
524 });
525 workspace.add_item(BufferItemHandle(buffer), cx);
526 }
527
528 pub fn replica_id(&self, cx: &AppContext) -> ReplicaId {
529 self.buffer.read(cx).replica_id()
530 }
531
532 pub fn buffer(&self) -> &ModelHandle<Buffer> {
533 &self.buffer
534 }
535
536 pub fn snapshot(&mut self, cx: &mut MutableAppContext) -> Snapshot {
537 Snapshot {
538 mode: self.mode,
539 display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
540 scroll_position: self.scroll_position,
541 scroll_top_anchor: self.scroll_top_anchor.clone(),
542 placeholder_text: self.placeholder_text.clone(),
543 is_focused: self
544 .handle
545 .upgrade(cx)
546 .map_or(false, |handle| handle.is_focused(cx)),
547 }
548 }
549
550 pub fn language<'a>(&self, cx: &'a AppContext) -> Option<&'a Arc<Language>> {
551 self.buffer.read(cx).language()
552 }
553
554 pub fn set_placeholder_text(
555 &mut self,
556 placeholder_text: impl Into<Arc<str>>,
557 cx: &mut ViewContext<Self>,
558 ) {
559 self.placeholder_text = Some(placeholder_text.into());
560 cx.notify();
561 }
562
563 pub fn set_scroll_position(&mut self, scroll_position: Vector2F, cx: &mut ViewContext<Self>) {
564 let map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
565 let scroll_top_buffer_offset =
566 DisplayPoint::new(scroll_position.y() as u32, 0).to_offset(&map, Bias::Right);
567 self.scroll_top_anchor = self
568 .buffer
569 .read(cx)
570 .anchor_at(scroll_top_buffer_offset, Bias::Right);
571 self.scroll_position = vec2f(
572 scroll_position.x(),
573 scroll_position.y() - self.scroll_top_anchor.to_display_point(&map).row() as f32,
574 );
575
576 debug_assert_eq!(
577 compute_scroll_position(&map, self.scroll_position, &self.scroll_top_anchor),
578 scroll_position
579 );
580
581 cx.notify();
582 }
583
584 pub fn scroll_position(&self, cx: &mut ViewContext<Self>) -> Vector2F {
585 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
586 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor)
587 }
588
589 pub fn clamp_scroll_left(&mut self, max: f32) -> bool {
590 if max < self.scroll_position.x() {
591 self.scroll_position.set_x(max);
592 true
593 } else {
594 false
595 }
596 }
597
598 pub fn autoscroll_vertically(
599 &mut self,
600 viewport_height: f32,
601 line_height: f32,
602 cx: &mut ViewContext<Self>,
603 ) -> bool {
604 let visible_lines = viewport_height / line_height;
605 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
606 let mut scroll_position =
607 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor);
608 let max_scroll_top = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
609 (display_map.max_point().row() as f32 - visible_lines + 1.).max(0.)
610 } else {
611 display_map.max_point().row().saturating_sub(1) as f32
612 };
613 if scroll_position.y() > max_scroll_top {
614 scroll_position.set_y(max_scroll_top);
615 self.set_scroll_position(scroll_position, cx);
616 }
617
618 let autoscroll = if let Some(autoscroll) = self.autoscroll_request.take() {
619 autoscroll
620 } else {
621 return false;
622 };
623
624 let first_cursor_top;
625 let last_cursor_bottom;
626 if autoscroll == Autoscroll::Newest {
627 let newest_selection = self.newest_selection::<Point>(cx);
628 first_cursor_top = newest_selection.head().to_display_point(&display_map).row() as f32;
629 last_cursor_bottom = first_cursor_top + 1.;
630 } else {
631 let mut selections = self.selections::<Point>(cx).peekable();
632 first_cursor_top = selections
633 .peek()
634 .unwrap()
635 .head()
636 .to_display_point(&display_map)
637 .row() as f32;
638 last_cursor_bottom = selections
639 .last()
640 .unwrap()
641 .head()
642 .to_display_point(&display_map)
643 .row() as f32
644 + 1.0;
645 }
646
647 let margin = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
648 0.
649 } else {
650 ((visible_lines - (last_cursor_bottom - first_cursor_top)) / 2.0).floor()
651 };
652 if margin < 0.0 {
653 return false;
654 }
655
656 match autoscroll {
657 Autoscroll::Fit | Autoscroll::Newest => {
658 let margin = margin.min(3.0);
659 let target_top = (first_cursor_top - margin).max(0.0);
660 let target_bottom = last_cursor_bottom + margin;
661 let start_row = scroll_position.y();
662 let end_row = start_row + visible_lines;
663
664 if target_top < start_row {
665 scroll_position.set_y(target_top);
666 self.set_scroll_position(scroll_position, cx);
667 } else if target_bottom >= end_row {
668 scroll_position.set_y(target_bottom - visible_lines);
669 self.set_scroll_position(scroll_position, cx);
670 }
671 }
672 Autoscroll::Center => {
673 scroll_position.set_y((first_cursor_top - margin).max(0.0));
674 self.set_scroll_position(scroll_position, cx);
675 }
676 }
677
678 true
679 }
680
681 pub fn autoscroll_horizontally(
682 &mut self,
683 start_row: u32,
684 viewport_width: f32,
685 scroll_width: f32,
686 max_glyph_width: f32,
687 layouts: &[text_layout::Line],
688 cx: &mut ViewContext<Self>,
689 ) -> bool {
690 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
691 let selections = self.selections::<Point>(cx);
692 let mut target_left = std::f32::INFINITY;
693 let mut target_right = 0.0_f32;
694 for selection in selections {
695 let head = selection.head().to_display_point(&display_map);
696 if head.row() >= start_row && head.row() < start_row + layouts.len() as u32 {
697 let start_column = head.column().saturating_sub(3);
698 let end_column = cmp::min(display_map.line_len(head.row()), head.column() + 3);
699 target_left = target_left.min(
700 layouts[(head.row() - start_row) as usize].x_for_index(start_column as usize),
701 );
702 target_right = target_right.max(
703 layouts[(head.row() - start_row) as usize].x_for_index(end_column as usize)
704 + max_glyph_width,
705 );
706 }
707 }
708 target_right = target_right.min(scroll_width);
709
710 if target_right - target_left > viewport_width {
711 return false;
712 }
713
714 let scroll_left = self.scroll_position.x() * max_glyph_width;
715 let scroll_right = scroll_left + viewport_width;
716
717 if target_left < scroll_left {
718 self.scroll_position.set_x(target_left / max_glyph_width);
719 true
720 } else if target_right > scroll_right {
721 self.scroll_position
722 .set_x((target_right - viewport_width) / max_glyph_width);
723 true
724 } else {
725 false
726 }
727 }
728
729 fn select(&mut self, Select(phase): &Select, cx: &mut ViewContext<Self>) {
730 match phase {
731 SelectPhase::Begin {
732 position,
733 add,
734 click_count,
735 } => self.begin_selection(*position, *add, *click_count, cx),
736 SelectPhase::BeginColumnar {
737 position,
738 overshoot,
739 } => self.begin_columnar_selection(*position, *overshoot, cx),
740 SelectPhase::Extend {
741 position,
742 click_count,
743 } => self.extend_selection(*position, *click_count, cx),
744 SelectPhase::Update {
745 position,
746 overshoot,
747 scroll_position,
748 } => self.update_selection(*position, *overshoot, *scroll_position, cx),
749 SelectPhase::End => self.end_selection(cx),
750 }
751 }
752
753 fn extend_selection(
754 &mut self,
755 position: DisplayPoint,
756 click_count: usize,
757 cx: &mut ViewContext<Self>,
758 ) {
759 let tail = self.newest_selection::<usize>(cx).tail();
760
761 self.begin_selection(position, false, click_count, cx);
762
763 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
764 let buffer = self.buffer.read(cx);
765 let position = position.to_offset(&display_map, Bias::Left);
766 let tail_anchor = buffer.anchor_before(tail);
767 let pending = self.pending_selection.as_mut().unwrap();
768
769 if position >= tail {
770 pending.selection.start = tail_anchor.clone();
771 } else {
772 pending.selection.end = tail_anchor.clone();
773 pending.selection.reversed = true;
774 }
775
776 match &mut pending.mode {
777 SelectMode::Word(range) | SelectMode::Line(range) => {
778 *range = tail_anchor.clone()..tail_anchor
779 }
780 _ => {}
781 }
782 }
783
784 fn begin_selection(
785 &mut self,
786 position: DisplayPoint,
787 add: bool,
788 click_count: usize,
789 cx: &mut ViewContext<Self>,
790 ) {
791 if !self.focused {
792 cx.focus_self();
793 cx.emit(Event::Activate);
794 }
795
796 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
797 let buffer = self.buffer.read(cx);
798 let start;
799 let end;
800 let mode;
801 match click_count {
802 1 => {
803 start = buffer.anchor_before(position.to_point(&display_map));
804 end = start.clone();
805 mode = SelectMode::Character;
806 }
807 2 => {
808 let range = movement::surrounding_word(&display_map, position);
809 start = buffer.anchor_before(range.start.to_point(&display_map));
810 end = buffer.anchor_before(range.end.to_point(&display_map));
811 mode = SelectMode::Word(start.clone()..end.clone());
812 }
813 3 => {
814 let position = display_map.clip_point(position, Bias::Left);
815 let line_start = movement::line_beginning(&display_map, position, false);
816 let mut next_line_start = line_start.clone();
817 *next_line_start.row_mut() += 1;
818 *next_line_start.column_mut() = 0;
819 next_line_start = display_map.clip_point(next_line_start, Bias::Right);
820
821 start = buffer.anchor_before(line_start.to_point(&display_map));
822 end = buffer.anchor_before(next_line_start.to_point(&display_map));
823 mode = SelectMode::Line(start.clone()..end.clone());
824 }
825 _ => {
826 start = buffer.anchor_before(0);
827 end = buffer.anchor_before(buffer.len());
828 mode = SelectMode::All;
829 }
830 }
831
832 let selection = Selection {
833 id: post_inc(&mut self.next_selection_id),
834 start,
835 end,
836 reversed: false,
837 goal: SelectionGoal::None,
838 };
839
840 if !add {
841 self.update_selections::<usize>(Vec::new(), None, cx);
842 } else if click_count > 1 {
843 // Remove the newest selection since it was only added as part of this multi-click.
844 let newest_selection = self.newest_selection::<usize>(cx);
845 self.update_selections::<usize>(
846 self.selections(cx)
847 .filter(|selection| selection.id != newest_selection.id)
848 .collect(),
849 None,
850 cx,
851 )
852 }
853
854 self.pending_selection = Some(PendingSelection { selection, mode });
855
856 cx.notify();
857 }
858
859 fn begin_columnar_selection(
860 &mut self,
861 position: DisplayPoint,
862 overshoot: u32,
863 cx: &mut ViewContext<Self>,
864 ) {
865 if !self.focused {
866 cx.focus_self();
867 cx.emit(Event::Activate);
868 }
869
870 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
871 let buffer = self.buffer.read(cx);
872
873 let tail = self.newest_selection::<Point>(cx).tail();
874 self.columnar_selection_tail = Some(buffer.anchor_before(tail));
875
876 self.select_columns(
877 tail.to_display_point(&display_map),
878 position,
879 overshoot,
880 &display_map,
881 cx,
882 );
883 }
884
885 fn update_selection(
886 &mut self,
887 position: DisplayPoint,
888 overshoot: u32,
889 scroll_position: Vector2F,
890 cx: &mut ViewContext<Self>,
891 ) {
892 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
893
894 if let Some(tail) = self.columnar_selection_tail.as_ref() {
895 let tail = tail.to_display_point(&display_map);
896 self.select_columns(tail, position, overshoot, &display_map, cx);
897 } else if let Some(PendingSelection { selection, mode }) = self.pending_selection.as_mut() {
898 let buffer = self.buffer.read(cx);
899 let head;
900 let tail;
901 match mode {
902 SelectMode::Character => {
903 head = position.to_point(&display_map);
904 tail = selection.tail().to_point(buffer);
905 }
906 SelectMode::Word(original_range) => {
907 let original_display_range = original_range.start.to_display_point(&display_map)
908 ..original_range.end.to_display_point(&display_map);
909 let original_buffer_range = original_display_range.start.to_point(&display_map)
910 ..original_display_range.end.to_point(&display_map);
911 if movement::is_inside_word(&display_map, position)
912 || original_display_range.contains(&position)
913 {
914 let word_range = movement::surrounding_word(&display_map, position);
915 if word_range.start < original_display_range.start {
916 head = word_range.start.to_point(&display_map);
917 } else {
918 head = word_range.end.to_point(&display_map);
919 }
920 } else {
921 head = position.to_point(&display_map);
922 }
923
924 if head <= original_buffer_range.start {
925 tail = original_buffer_range.end;
926 } else {
927 tail = original_buffer_range.start;
928 }
929 }
930 SelectMode::Line(original_range) => {
931 let original_display_range = original_range.start.to_display_point(&display_map)
932 ..original_range.end.to_display_point(&display_map);
933 let original_buffer_range = original_display_range.start.to_point(&display_map)
934 ..original_display_range.end.to_point(&display_map);
935 let line_start = movement::line_beginning(&display_map, position, false);
936 let mut next_line_start = line_start.clone();
937 *next_line_start.row_mut() += 1;
938 *next_line_start.column_mut() = 0;
939 next_line_start = display_map.clip_point(next_line_start, Bias::Right);
940
941 if line_start < original_display_range.start {
942 head = line_start.to_point(&display_map);
943 } else {
944 head = next_line_start.to_point(&display_map);
945 }
946
947 if head <= original_buffer_range.start {
948 tail = original_buffer_range.end;
949 } else {
950 tail = original_buffer_range.start;
951 }
952 }
953 SelectMode::All => {
954 return;
955 }
956 };
957
958 if head < tail {
959 selection.start = buffer.anchor_before(head);
960 selection.end = buffer.anchor_before(tail);
961 selection.reversed = true;
962 } else {
963 selection.start = buffer.anchor_before(tail);
964 selection.end = buffer.anchor_before(head);
965 selection.reversed = false;
966 }
967 } else {
968 log::error!("update_selection dispatched with no pending selection");
969 return;
970 }
971
972 self.set_scroll_position(scroll_position, cx);
973 cx.notify();
974 }
975
976 fn end_selection(&mut self, cx: &mut ViewContext<Self>) {
977 self.columnar_selection_tail.take();
978 if self.pending_selection.is_some() {
979 let selections = self.selections::<usize>(cx).collect::<Vec<_>>();
980 self.update_selections(selections, None, cx);
981 }
982 }
983
984 fn select_columns(
985 &mut self,
986 tail: DisplayPoint,
987 head: DisplayPoint,
988 overshoot: u32,
989 display_map: &DisplayMapSnapshot,
990 cx: &mut ViewContext<Self>,
991 ) {
992 let start_row = cmp::min(tail.row(), head.row());
993 let end_row = cmp::max(tail.row(), head.row());
994 let start_column = cmp::min(tail.column(), head.column() + overshoot);
995 let end_column = cmp::max(tail.column(), head.column() + overshoot);
996 let reversed = start_column < tail.column();
997
998 let selections = (start_row..=end_row)
999 .filter_map(|row| {
1000 if start_column <= display_map.line_len(row) && !display_map.is_block_line(row) {
1001 let start = display_map
1002 .clip_point(DisplayPoint::new(row, start_column), Bias::Left)
1003 .to_point(&display_map);
1004 let end = display_map
1005 .clip_point(DisplayPoint::new(row, end_column), Bias::Right)
1006 .to_point(&display_map);
1007 Some(Selection {
1008 id: post_inc(&mut self.next_selection_id),
1009 start,
1010 end,
1011 reversed,
1012 goal: SelectionGoal::None,
1013 })
1014 } else {
1015 None
1016 }
1017 })
1018 .collect::<Vec<_>>();
1019
1020 self.update_selections(selections, None, cx);
1021 cx.notify();
1022 }
1023
1024 pub fn is_selecting(&self) -> bool {
1025 self.pending_selection.is_some() || self.columnar_selection_tail.is_some()
1026 }
1027
1028 pub fn cancel(&mut self, _: &Cancel, cx: &mut ViewContext<Self>) {
1029 if self.active_diagnostics.is_some() {
1030 self.dismiss_diagnostics(cx);
1031 } else if let Some(PendingSelection { selection, .. }) = self.pending_selection.take() {
1032 let buffer = self.buffer.read(cx);
1033 let selection = Selection {
1034 id: selection.id,
1035 start: selection.start.to_point(buffer),
1036 end: selection.end.to_point(buffer),
1037 reversed: selection.reversed,
1038 goal: selection.goal,
1039 };
1040 if self.selections::<Point>(cx).next().is_none() {
1041 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
1042 }
1043 } else {
1044 let mut oldest_selection = self.oldest_selection::<usize>(cx);
1045 if self.selection_count(cx) == 1 {
1046 oldest_selection.start = oldest_selection.head().clone();
1047 oldest_selection.end = oldest_selection.head().clone();
1048 }
1049 self.update_selections(vec![oldest_selection], Some(Autoscroll::Fit), cx);
1050 }
1051 }
1052
1053 pub fn select_ranges<I, T>(
1054 &mut self,
1055 ranges: I,
1056 autoscroll: Option<Autoscroll>,
1057 cx: &mut ViewContext<Self>,
1058 ) where
1059 I: IntoIterator<Item = Range<T>>,
1060 T: ToOffset,
1061 {
1062 let buffer = self.buffer.read(cx);
1063 let selections = ranges
1064 .into_iter()
1065 .map(|range| {
1066 let mut start = range.start.to_offset(buffer);
1067 let mut end = range.end.to_offset(buffer);
1068 let reversed = if start > end {
1069 mem::swap(&mut start, &mut end);
1070 true
1071 } else {
1072 false
1073 };
1074 Selection {
1075 id: post_inc(&mut self.next_selection_id),
1076 start,
1077 end,
1078 reversed,
1079 goal: SelectionGoal::None,
1080 }
1081 })
1082 .collect();
1083 self.update_selections(selections, autoscroll, cx);
1084 }
1085
1086 #[cfg(test)]
1087 fn select_display_ranges<'a, T>(
1088 &mut self,
1089 ranges: T,
1090 cx: &mut ViewContext<Self>,
1091 ) -> anyhow::Result<()>
1092 where
1093 T: IntoIterator<Item = &'a Range<DisplayPoint>>,
1094 {
1095 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1096 let selections = ranges
1097 .into_iter()
1098 .map(|range| {
1099 let mut start = range.start;
1100 let mut end = range.end;
1101 let reversed = if start > end {
1102 mem::swap(&mut start, &mut end);
1103 true
1104 } else {
1105 false
1106 };
1107 Selection {
1108 id: post_inc(&mut self.next_selection_id),
1109 start: start.to_point(&display_map),
1110 end: end.to_point(&display_map),
1111 reversed,
1112 goal: SelectionGoal::None,
1113 }
1114 })
1115 .collect();
1116 self.update_selections(selections, None, cx);
1117 Ok(())
1118 }
1119
1120 pub fn handle_input(&mut self, action: &Input, cx: &mut ViewContext<Self>) {
1121 let text = action.0.as_ref();
1122 if !self.skip_autoclose_end(text, cx) {
1123 self.start_transaction(cx);
1124 self.insert(text, cx);
1125 self.autoclose_pairs(cx);
1126 self.end_transaction(cx);
1127 }
1128 }
1129
1130 pub fn newline(&mut self, _: &Newline, cx: &mut ViewContext<Self>) {
1131 self.start_transaction(cx);
1132 let mut old_selections = SmallVec::<[_; 32]>::new();
1133 {
1134 let selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1135 let buffer = self.buffer.read(cx);
1136 for selection in selections.iter() {
1137 let start_point = selection.start;
1138 let indent = buffer
1139 .indent_column_for_line(start_point.row)
1140 .min(start_point.column);
1141 let start = selection.start.to_offset(buffer);
1142 let end = selection.end.to_offset(buffer);
1143
1144 let mut insert_extra_newline = false;
1145 if let Some(language) = buffer.language() {
1146 let leading_whitespace_len = buffer
1147 .reversed_chars_at(start)
1148 .take_while(|c| c.is_whitespace() && *c != '\n')
1149 .map(|c| c.len_utf8())
1150 .sum::<usize>();
1151
1152 let trailing_whitespace_len = buffer
1153 .chars_at(end)
1154 .take_while(|c| c.is_whitespace() && *c != '\n')
1155 .map(|c| c.len_utf8())
1156 .sum::<usize>();
1157
1158 insert_extra_newline = language.brackets().iter().any(|pair| {
1159 let pair_start = pair.start.trim_end();
1160 let pair_end = pair.end.trim_start();
1161
1162 pair.newline
1163 && buffer.contains_str_at(end + trailing_whitespace_len, pair_end)
1164 && buffer.contains_str_at(
1165 (start - leading_whitespace_len).saturating_sub(pair_start.len()),
1166 pair_start,
1167 )
1168 });
1169 }
1170
1171 old_selections.push((selection.id, start..end, indent, insert_extra_newline));
1172 }
1173 }
1174
1175 let mut new_selections = Vec::with_capacity(old_selections.len());
1176 self.buffer.update(cx, |buffer, cx| {
1177 let mut delta = 0_isize;
1178 let mut pending_edit: Option<PendingEdit> = None;
1179 for (_, range, indent, insert_extra_newline) in &old_selections {
1180 if pending_edit.as_ref().map_or(false, |pending| {
1181 pending.indent != *indent
1182 || pending.insert_extra_newline != *insert_extra_newline
1183 }) {
1184 let pending = pending_edit.take().unwrap();
1185 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1186 new_text.push('\n');
1187 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1188 if pending.insert_extra_newline {
1189 new_text = new_text.repeat(2);
1190 }
1191 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1192 delta += pending.delta;
1193 }
1194
1195 let start = (range.start as isize + delta) as usize;
1196 let end = (range.end as isize + delta) as usize;
1197 let mut text_len = *indent as usize + 1;
1198 if *insert_extra_newline {
1199 text_len *= 2;
1200 }
1201
1202 let pending = pending_edit.get_or_insert_with(Default::default);
1203 pending.delta += text_len as isize - (end - start) as isize;
1204 pending.indent = *indent;
1205 pending.insert_extra_newline = *insert_extra_newline;
1206 pending.ranges.push(start..end);
1207 }
1208
1209 let pending = pending_edit.unwrap();
1210 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1211 new_text.push('\n');
1212 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1213 if pending.insert_extra_newline {
1214 new_text = new_text.repeat(2);
1215 }
1216 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1217
1218 let mut delta = 0_isize;
1219 new_selections.extend(old_selections.into_iter().map(
1220 |(id, range, indent, insert_extra_newline)| {
1221 let start = (range.start as isize + delta) as usize;
1222 let end = (range.end as isize + delta) as usize;
1223 let text_before_cursor_len = indent as usize + 1;
1224 let cursor = start + text_before_cursor_len;
1225 let text_len = if insert_extra_newline {
1226 text_before_cursor_len * 2
1227 } else {
1228 text_before_cursor_len
1229 };
1230 delta += text_len as isize - (end - start) as isize;
1231 Selection {
1232 id,
1233 start: cursor,
1234 end: cursor,
1235 reversed: false,
1236 goal: SelectionGoal::None,
1237 }
1238 },
1239 ))
1240 });
1241
1242 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1243 self.end_transaction(cx);
1244
1245 #[derive(Default)]
1246 struct PendingEdit {
1247 indent: u32,
1248 insert_extra_newline: bool,
1249 delta: isize,
1250 ranges: SmallVec<[Range<usize>; 32]>,
1251 }
1252 }
1253
1254 fn insert(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1255 self.start_transaction(cx);
1256 let old_selections = self.selections::<usize>(cx).collect::<SmallVec<[_; 32]>>();
1257 let mut new_selections = Vec::new();
1258 self.buffer.update(cx, |buffer, cx| {
1259 let edit_ranges = old_selections.iter().map(|s| s.start..s.end);
1260 buffer.edit_with_autoindent(edit_ranges, text, cx);
1261 let text_len = text.len() as isize;
1262 let mut delta = 0_isize;
1263 new_selections = old_selections
1264 .into_iter()
1265 .map(|selection| {
1266 let start = selection.start as isize;
1267 let end = selection.end as isize;
1268 let cursor = (start + delta + text_len) as usize;
1269 let deleted_count = end - start;
1270 delta += text_len - deleted_count;
1271 Selection {
1272 id: selection.id,
1273 start: cursor,
1274 end: cursor,
1275 reversed: false,
1276 goal: SelectionGoal::None,
1277 }
1278 })
1279 .collect();
1280 });
1281
1282 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1283 self.end_transaction(cx);
1284 }
1285
1286 fn autoclose_pairs(&mut self, cx: &mut ViewContext<Self>) {
1287 let selections = self.selections::<usize>(cx).collect::<Vec<_>>();
1288 let new_autoclose_pair_state = self.buffer.update(cx, |buffer, cx| {
1289 let autoclose_pair = buffer.language().and_then(|language| {
1290 let first_selection_start = selections.first().unwrap().start;
1291 let pair = language.brackets().iter().find(|pair| {
1292 buffer.contains_str_at(
1293 first_selection_start.saturating_sub(pair.start.len()),
1294 &pair.start,
1295 )
1296 });
1297 pair.and_then(|pair| {
1298 let should_autoclose = selections[1..].iter().all(|selection| {
1299 buffer.contains_str_at(
1300 selection.start.saturating_sub(pair.start.len()),
1301 &pair.start,
1302 )
1303 });
1304
1305 if should_autoclose {
1306 Some(pair.clone())
1307 } else {
1308 None
1309 }
1310 })
1311 });
1312
1313 autoclose_pair.and_then(|pair| {
1314 let selection_ranges = selections
1315 .iter()
1316 .map(|selection| {
1317 let start = selection.start.to_offset(&*buffer);
1318 start..start
1319 })
1320 .collect::<SmallVec<[_; 32]>>();
1321
1322 buffer.edit(selection_ranges, &pair.end, cx);
1323
1324 if pair.end.len() == 1 {
1325 let mut delta = 0;
1326 Some(BracketPairState {
1327 ranges: buffer.anchor_range_set(
1328 Bias::Left,
1329 Bias::Right,
1330 selections.iter().map(move |selection| {
1331 let offset = selection.start + delta;
1332 delta += 1;
1333 offset..offset
1334 }),
1335 ),
1336 pair,
1337 })
1338 } else {
1339 None
1340 }
1341 })
1342 });
1343 self.autoclose_stack.extend(new_autoclose_pair_state);
1344 }
1345
1346 fn skip_autoclose_end(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
1347 let old_selections = self.selections::<usize>(cx).collect::<Vec<_>>();
1348 let autoclose_pair_state = if let Some(autoclose_pair_state) = self.autoclose_stack.last() {
1349 autoclose_pair_state
1350 } else {
1351 return false;
1352 };
1353 if text != autoclose_pair_state.pair.end {
1354 return false;
1355 }
1356
1357 debug_assert_eq!(old_selections.len(), autoclose_pair_state.ranges.len());
1358
1359 let buffer = self.buffer.read(cx);
1360 if old_selections
1361 .iter()
1362 .zip(autoclose_pair_state.ranges.ranges::<usize>(buffer))
1363 .all(|(selection, autoclose_range)| {
1364 let autoclose_range_end = autoclose_range.end.to_offset(buffer);
1365 selection.is_empty() && selection.start == autoclose_range_end
1366 })
1367 {
1368 let new_selections = old_selections
1369 .into_iter()
1370 .map(|selection| {
1371 let cursor = selection.start + 1;
1372 Selection {
1373 id: selection.id,
1374 start: cursor,
1375 end: cursor,
1376 reversed: false,
1377 goal: SelectionGoal::None,
1378 }
1379 })
1380 .collect();
1381 self.autoclose_stack.pop();
1382 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1383 true
1384 } else {
1385 false
1386 }
1387 }
1388
1389 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
1390 self.start_transaction(cx);
1391 self.select_all(&SelectAll, cx);
1392 self.insert("", cx);
1393 self.end_transaction(cx);
1394 }
1395
1396 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
1397 self.start_transaction(cx);
1398 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1399 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1400 for selection in &mut selections {
1401 if selection.is_empty() {
1402 let head = selection.head().to_display_point(&display_map);
1403 let cursor = movement::left(&display_map, head)
1404 .unwrap()
1405 .to_point(&display_map);
1406 selection.set_head(cursor);
1407 selection.goal = SelectionGoal::None;
1408 }
1409 }
1410 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1411 self.insert("", cx);
1412 self.end_transaction(cx);
1413 }
1414
1415 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
1416 self.start_transaction(cx);
1417 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1418 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1419 for selection in &mut selections {
1420 if selection.is_empty() {
1421 let head = selection.head().to_display_point(&display_map);
1422 let cursor = movement::right(&display_map, head)
1423 .unwrap()
1424 .to_point(&display_map);
1425 selection.set_head(cursor);
1426 selection.goal = SelectionGoal::None;
1427 }
1428 }
1429 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1430 self.insert(&"", cx);
1431 self.end_transaction(cx);
1432 }
1433
1434 pub fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
1435 self.start_transaction(cx);
1436 let tab_size = self.build_settings.borrow()(cx).tab_size;
1437 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1438 let mut last_indent = None;
1439 self.buffer.update(cx, |buffer, cx| {
1440 for selection in &mut selections {
1441 if selection.is_empty() {
1442 let char_column = buffer
1443 .chars_for_range(Point::new(selection.start.row, 0)..selection.start)
1444 .count();
1445 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
1446 buffer.edit(
1447 [selection.start..selection.start],
1448 " ".repeat(chars_to_next_tab_stop),
1449 cx,
1450 );
1451 selection.start.column += chars_to_next_tab_stop as u32;
1452 selection.end = selection.start;
1453 } else {
1454 let mut start_row = selection.start.row;
1455 let mut end_row = selection.end.row + 1;
1456
1457 // If a selection ends at the beginning of a line, don't indent
1458 // that last line.
1459 if selection.end.column == 0 {
1460 end_row -= 1;
1461 }
1462
1463 // Avoid re-indenting a row that has already been indented by a
1464 // previous selection, but still update this selection's column
1465 // to reflect that indentation.
1466 if let Some((last_indent_row, last_indent_len)) = last_indent {
1467 if last_indent_row == selection.start.row {
1468 selection.start.column += last_indent_len;
1469 start_row += 1;
1470 }
1471 if last_indent_row == selection.end.row {
1472 selection.end.column += last_indent_len;
1473 }
1474 }
1475
1476 for row in start_row..end_row {
1477 let indent_column = buffer.indent_column_for_line(row) as usize;
1478 let columns_to_next_tab_stop = tab_size - (indent_column % tab_size);
1479 let row_start = Point::new(row, 0);
1480 buffer.edit(
1481 [row_start..row_start],
1482 " ".repeat(columns_to_next_tab_stop),
1483 cx,
1484 );
1485
1486 // Update this selection's endpoints to reflect the indentation.
1487 if row == selection.start.row {
1488 selection.start.column += columns_to_next_tab_stop as u32;
1489 }
1490 if row == selection.end.row {
1491 selection.end.column += columns_to_next_tab_stop as u32;
1492 }
1493
1494 last_indent = Some((row, columns_to_next_tab_stop as u32));
1495 }
1496 }
1497 }
1498 });
1499
1500 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1501 self.end_transaction(cx);
1502 }
1503
1504 pub fn outdent(&mut self, _: &Outdent, cx: &mut ViewContext<Self>) {
1505 self.start_transaction(cx);
1506 let tab_size = self.build_settings.borrow()(cx).tab_size;
1507 let selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1508 let mut deletion_ranges = Vec::new();
1509 let mut last_outdent = None;
1510 self.buffer.update(cx, |buffer, cx| {
1511 for selection in &selections {
1512 let mut start_row = selection.start.row;
1513 let mut end_row = selection.end.row + 1;
1514
1515 // If a selection ends at the beginning of a line, don't indent
1516 // that last line.
1517 if selection.end.column == 0 {
1518 end_row -= 1;
1519 }
1520
1521 // Avoid re-outdenting a row that has already been outdented by a
1522 // previous selection.
1523 if let Some(last_row) = last_outdent {
1524 if last_row == selection.start.row {
1525 start_row += 1;
1526 }
1527 }
1528
1529 for row in start_row..end_row {
1530 let column = buffer.indent_column_for_line(row) as usize;
1531 if column > 0 {
1532 let mut deletion_len = (column % tab_size) as u32;
1533 if deletion_len == 0 {
1534 deletion_len = tab_size as u32;
1535 }
1536 deletion_ranges.push(Point::new(row, 0)..Point::new(row, deletion_len));
1537 last_outdent = Some(row);
1538 }
1539 }
1540 }
1541 buffer.edit(deletion_ranges, "", cx);
1542 });
1543
1544 self.update_selections(
1545 self.selections::<usize>(cx).collect(),
1546 Some(Autoscroll::Fit),
1547 cx,
1548 );
1549 self.end_transaction(cx);
1550 }
1551
1552 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
1553 self.start_transaction(cx);
1554
1555 let selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1556 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1557 let buffer = self.buffer.read(cx);
1558
1559 let mut row_delta = 0;
1560 let mut new_cursors = Vec::new();
1561 let mut edit_ranges = Vec::new();
1562 let mut selections = selections.iter().peekable();
1563 while let Some(selection) = selections.next() {
1564 let mut rows = selection.spanned_rows(false, &display_map).buffer_rows;
1565 let goal_display_column = selection.head().to_display_point(&display_map).column();
1566
1567 // Accumulate contiguous regions of rows that we want to delete.
1568 while let Some(next_selection) = selections.peek() {
1569 let next_rows = next_selection.spanned_rows(false, &display_map).buffer_rows;
1570 if next_rows.start <= rows.end {
1571 rows.end = next_rows.end;
1572 selections.next().unwrap();
1573 } else {
1574 break;
1575 }
1576 }
1577
1578 let mut edit_start = Point::new(rows.start, 0).to_offset(buffer);
1579 let edit_end;
1580 let cursor_buffer_row;
1581 if buffer.max_point().row >= rows.end {
1582 // If there's a line after the range, delete the \n from the end of the row range
1583 // and position the cursor on the next line.
1584 edit_end = Point::new(rows.end, 0).to_offset(buffer);
1585 cursor_buffer_row = rows.start;
1586 } else {
1587 // If there isn't a line after the range, delete the \n from the line before the
1588 // start of the row range and position the cursor there.
1589 edit_start = edit_start.saturating_sub(1);
1590 edit_end = buffer.len();
1591 cursor_buffer_row = rows.start.saturating_sub(1);
1592 }
1593
1594 let mut cursor =
1595 Point::new(cursor_buffer_row - row_delta, 0).to_display_point(&display_map);
1596 *cursor.column_mut() =
1597 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
1598 row_delta += rows.len() as u32;
1599
1600 new_cursors.push((selection.id, cursor.to_point(&display_map)));
1601 edit_ranges.push(edit_start..edit_end);
1602 }
1603
1604 new_cursors.sort_unstable_by_key(|(_, point)| point.clone());
1605 let new_selections = new_cursors
1606 .into_iter()
1607 .map(|(id, cursor)| Selection {
1608 id,
1609 start: cursor,
1610 end: cursor,
1611 reversed: false,
1612 goal: SelectionGoal::None,
1613 })
1614 .collect();
1615 self.buffer
1616 .update(cx, |buffer, cx| buffer.edit(edit_ranges, "", cx));
1617 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1618 self.end_transaction(cx);
1619 }
1620
1621 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
1622 self.start_transaction(cx);
1623
1624 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1625 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1626 let buffer = self.buffer.read(cx);
1627
1628 let mut edits = Vec::new();
1629 let mut selections_iter = selections.iter().peekable();
1630 while let Some(selection) = selections_iter.next() {
1631 // Avoid duplicating the same lines twice.
1632 let mut rows = selection.spanned_rows(false, &display_map).buffer_rows;
1633
1634 while let Some(next_selection) = selections_iter.peek() {
1635 let next_rows = next_selection.spanned_rows(false, &display_map).buffer_rows;
1636 if next_rows.start <= rows.end - 1 {
1637 rows.end = next_rows.end;
1638 selections_iter.next().unwrap();
1639 } else {
1640 break;
1641 }
1642 }
1643
1644 // Copy the text from the selected row region and splice it at the start of the region.
1645 let start = Point::new(rows.start, 0);
1646 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
1647 let text = buffer
1648 .text_for_range(start..end)
1649 .chain(Some("\n"))
1650 .collect::<String>();
1651 edits.push((start, text, rows.len() as u32));
1652 }
1653
1654 let mut edits_iter = edits.iter().peekable();
1655 let mut row_delta = 0;
1656 for selection in selections.iter_mut() {
1657 while let Some((point, _, line_count)) = edits_iter.peek() {
1658 if *point <= selection.start {
1659 row_delta += line_count;
1660 edits_iter.next();
1661 } else {
1662 break;
1663 }
1664 }
1665 selection.start.row += row_delta;
1666 selection.end.row += row_delta;
1667 }
1668
1669 self.buffer.update(cx, |buffer, cx| {
1670 for (point, text, _) in edits.into_iter().rev() {
1671 buffer.edit(Some(point..point), text, cx);
1672 }
1673 });
1674
1675 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1676 self.end_transaction(cx);
1677 }
1678
1679 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
1680 self.start_transaction(cx);
1681
1682 let selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1683 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1684 let buffer = self.buffer.read(cx);
1685
1686 let mut edits = Vec::new();
1687 let mut new_selection_ranges = Vec::new();
1688 let mut old_folds = Vec::new();
1689 let mut new_folds = Vec::new();
1690
1691 let mut selections = selections.iter().peekable();
1692 let mut contiguous_selections = Vec::new();
1693 while let Some(selection) = selections.next() {
1694 // Accumulate contiguous regions of rows that we want to move.
1695 contiguous_selections.push(selection.point_range(buffer));
1696 let SpannedRows {
1697 mut buffer_rows,
1698 mut display_rows,
1699 } = selection.spanned_rows(false, &display_map);
1700
1701 while let Some(next_selection) = selections.peek() {
1702 let SpannedRows {
1703 buffer_rows: next_buffer_rows,
1704 display_rows: next_display_rows,
1705 } = next_selection.spanned_rows(false, &display_map);
1706 if next_buffer_rows.start <= buffer_rows.end {
1707 buffer_rows.end = next_buffer_rows.end;
1708 display_rows.end = next_display_rows.end;
1709 contiguous_selections.push(next_selection.point_range(buffer));
1710 selections.next().unwrap();
1711 } else {
1712 break;
1713 }
1714 }
1715
1716 // Cut the text from the selected rows and paste it at the start of the previous line.
1717 if display_rows.start != 0 {
1718 let start = Point::new(buffer_rows.start, 0).to_offset(buffer);
1719 let end = Point::new(buffer_rows.end - 1, buffer.line_len(buffer_rows.end - 1))
1720 .to_offset(buffer);
1721
1722 let prev_row_display_start = DisplayPoint::new(display_rows.start - 1, 0);
1723 let prev_row_buffer_start = display_map.prev_row_boundary(prev_row_display_start).1;
1724 let prev_row_buffer_start_offset = prev_row_buffer_start.to_offset(buffer);
1725
1726 let mut text = String::new();
1727 text.extend(buffer.text_for_range(start..end));
1728 text.push('\n');
1729 edits.push((
1730 prev_row_buffer_start_offset..prev_row_buffer_start_offset,
1731 text,
1732 ));
1733 edits.push((start - 1..end, String::new()));
1734
1735 let row_delta = buffer_rows.start - prev_row_buffer_start.row;
1736
1737 // Move selections up.
1738 for range in &mut contiguous_selections {
1739 range.start.row -= row_delta;
1740 range.end.row -= row_delta;
1741 }
1742
1743 // Move folds up.
1744 old_folds.push(start..end);
1745 for fold in display_map.folds_in_range(start..end) {
1746 let mut start = fold.start.to_point(buffer);
1747 let mut end = fold.end.to_point(buffer);
1748 start.row -= row_delta;
1749 end.row -= row_delta;
1750 new_folds.push(start..end);
1751 }
1752 }
1753
1754 new_selection_ranges.extend(contiguous_selections.drain(..));
1755 }
1756
1757 self.unfold_ranges(old_folds, cx);
1758 self.buffer.update(cx, |buffer, cx| {
1759 for (range, text) in edits.into_iter().rev() {
1760 buffer.edit(Some(range), text, cx);
1761 }
1762 });
1763 self.fold_ranges(new_folds, cx);
1764 self.select_ranges(new_selection_ranges, Some(Autoscroll::Fit), cx);
1765
1766 self.end_transaction(cx);
1767 }
1768
1769 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
1770 self.start_transaction(cx);
1771
1772 let selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1773 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1774 let buffer = self.buffer.read(cx);
1775
1776 let mut edits = Vec::new();
1777 let mut new_selection_ranges = Vec::new();
1778 let mut old_folds = Vec::new();
1779 let mut new_folds = Vec::new();
1780
1781 let mut selections = selections.iter().peekable();
1782 let mut contiguous_selections = Vec::new();
1783 while let Some(selection) = selections.next() {
1784 // Accumulate contiguous regions of rows that we want to move.
1785 contiguous_selections.push(selection.point_range(buffer));
1786 let SpannedRows {
1787 mut buffer_rows,
1788 mut display_rows,
1789 } = selection.spanned_rows(false, &display_map);
1790 while let Some(next_selection) = selections.peek() {
1791 let SpannedRows {
1792 buffer_rows: next_buffer_rows,
1793 display_rows: next_display_rows,
1794 } = next_selection.spanned_rows(false, &display_map);
1795 if next_buffer_rows.start <= buffer_rows.end {
1796 buffer_rows.end = next_buffer_rows.end;
1797 display_rows.end = next_display_rows.end;
1798 contiguous_selections.push(next_selection.point_range(buffer));
1799 selections.next().unwrap();
1800 } else {
1801 break;
1802 }
1803 }
1804
1805 // Cut the text from the selected rows and paste it at the end of the next line.
1806 if display_rows.end <= display_map.max_point().row() {
1807 let start = Point::new(buffer_rows.start, 0).to_offset(buffer);
1808 let end = Point::new(buffer_rows.end - 1, buffer.line_len(buffer_rows.end - 1))
1809 .to_offset(buffer);
1810
1811 let next_row_display_end =
1812 DisplayPoint::new(display_rows.end, display_map.line_len(display_rows.end));
1813 let next_row_buffer_end = display_map.next_row_boundary(next_row_display_end).1;
1814 let next_row_buffer_end_offset = next_row_buffer_end.to_offset(buffer);
1815
1816 let mut text = String::new();
1817 text.push('\n');
1818 text.extend(buffer.text_for_range(start..end));
1819 edits.push((start..end + 1, String::new()));
1820 edits.push((next_row_buffer_end_offset..next_row_buffer_end_offset, text));
1821
1822 let row_delta = next_row_buffer_end.row - buffer_rows.end + 1;
1823
1824 // Move selections down.
1825 for range in &mut contiguous_selections {
1826 range.start.row += row_delta;
1827 range.end.row += row_delta;
1828 }
1829
1830 // Move folds down.
1831 old_folds.push(start..end);
1832 for fold in display_map.folds_in_range(start..end) {
1833 let mut start = fold.start.to_point(buffer);
1834 let mut end = fold.end.to_point(buffer);
1835 start.row += row_delta;
1836 end.row += row_delta;
1837 new_folds.push(start..end);
1838 }
1839 }
1840
1841 new_selection_ranges.extend(contiguous_selections.drain(..));
1842 }
1843
1844 self.unfold_ranges(old_folds, cx);
1845 self.buffer.update(cx, |buffer, cx| {
1846 for (range, text) in edits.into_iter().rev() {
1847 buffer.edit(Some(range), text, cx);
1848 }
1849 });
1850 self.fold_ranges(new_folds, cx);
1851 self.select_ranges(new_selection_ranges, Some(Autoscroll::Fit), cx);
1852
1853 self.end_transaction(cx);
1854 }
1855
1856 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
1857 self.start_transaction(cx);
1858 let mut text = String::new();
1859 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1860 let mut clipboard_selections = Vec::with_capacity(selections.len());
1861 {
1862 let buffer = self.buffer.read(cx);
1863 let max_point = buffer.max_point();
1864 for selection in &mut selections {
1865 let is_entire_line = selection.is_empty();
1866 if is_entire_line {
1867 selection.start = Point::new(selection.start.row, 0);
1868 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
1869 }
1870 let mut len = 0;
1871 for chunk in buffer.text_for_range(selection.start..selection.end) {
1872 text.push_str(chunk);
1873 len += chunk.len();
1874 }
1875 clipboard_selections.push(ClipboardSelection {
1876 len,
1877 is_entire_line,
1878 });
1879 }
1880 }
1881 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1882 self.insert("", cx);
1883 self.end_transaction(cx);
1884
1885 cx.as_mut()
1886 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
1887 }
1888
1889 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
1890 let selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1891 let buffer = self.buffer.read(cx);
1892 let max_point = buffer.max_point();
1893 let mut text = String::new();
1894 let mut clipboard_selections = Vec::with_capacity(selections.len());
1895 for selection in selections.iter() {
1896 let mut start = selection.start;
1897 let mut end = selection.end;
1898 let is_entire_line = selection.is_empty();
1899 if is_entire_line {
1900 start = Point::new(start.row, 0);
1901 end = cmp::min(max_point, Point::new(start.row + 1, 0));
1902 }
1903 let mut len = 0;
1904 for chunk in buffer.text_for_range(start..end) {
1905 text.push_str(chunk);
1906 len += chunk.len();
1907 }
1908 clipboard_selections.push(ClipboardSelection {
1909 len,
1910 is_entire_line,
1911 });
1912 }
1913
1914 cx.as_mut()
1915 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
1916 }
1917
1918 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
1919 if let Some(item) = cx.as_mut().read_from_clipboard() {
1920 let clipboard_text = item.text();
1921 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
1922 let mut selections = self.selections::<usize>(cx).collect::<Vec<_>>();
1923 let all_selections_were_entire_line =
1924 clipboard_selections.iter().all(|s| s.is_entire_line);
1925 if clipboard_selections.len() != selections.len() {
1926 clipboard_selections.clear();
1927 }
1928
1929 let mut delta = 0_isize;
1930 let mut start_offset = 0;
1931 for (i, selection) in selections.iter_mut().enumerate() {
1932 let to_insert;
1933 let entire_line;
1934 if let Some(clipboard_selection) = clipboard_selections.get(i) {
1935 let end_offset = start_offset + clipboard_selection.len;
1936 to_insert = &clipboard_text[start_offset..end_offset];
1937 entire_line = clipboard_selection.is_entire_line;
1938 start_offset = end_offset
1939 } else {
1940 to_insert = clipboard_text.as_str();
1941 entire_line = all_selections_were_entire_line;
1942 }
1943
1944 selection.start = (selection.start as isize + delta) as usize;
1945 selection.end = (selection.end as isize + delta) as usize;
1946
1947 self.buffer.update(cx, |buffer, cx| {
1948 // If the corresponding selection was empty when this slice of the
1949 // clipboard text was written, then the entire line containing the
1950 // selection was copied. If this selection is also currently empty,
1951 // then paste the line before the current line of the buffer.
1952 let range = if selection.is_empty() && entire_line {
1953 let column = selection.start.to_point(&*buffer).column as usize;
1954 let line_start = selection.start - column;
1955 line_start..line_start
1956 } else {
1957 selection.start..selection.end
1958 };
1959
1960 delta += to_insert.len() as isize - range.len() as isize;
1961 buffer.edit([range], to_insert, cx);
1962 selection.start += to_insert.len();
1963 selection.end = selection.start;
1964 });
1965 }
1966 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1967 } else {
1968 self.insert(clipboard_text, cx);
1969 }
1970 }
1971 }
1972
1973 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
1974 self.buffer.update(cx, |buffer, cx| buffer.undo(cx));
1975 self.request_autoscroll(Autoscroll::Fit, cx);
1976 }
1977
1978 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
1979 self.buffer.update(cx, |buffer, cx| buffer.redo(cx));
1980 self.request_autoscroll(Autoscroll::Fit, cx);
1981 }
1982
1983 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
1984 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1985 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1986 for selection in &mut selections {
1987 let start = selection.start.to_display_point(&display_map);
1988 let end = selection.end.to_display_point(&display_map);
1989
1990 if start != end {
1991 selection.end = selection.start.clone();
1992 } else {
1993 let cursor = movement::left(&display_map, start)
1994 .unwrap()
1995 .to_point(&display_map);
1996 selection.start = cursor.clone();
1997 selection.end = cursor;
1998 }
1999 selection.reversed = false;
2000 selection.goal = SelectionGoal::None;
2001 }
2002 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2003 }
2004
2005 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
2006 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2007 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
2008 for selection in &mut selections {
2009 let head = selection.head().to_display_point(&display_map);
2010 let cursor = movement::left(&display_map, head)
2011 .unwrap()
2012 .to_point(&display_map);
2013 selection.set_head(cursor);
2014 selection.goal = SelectionGoal::None;
2015 }
2016 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2017 }
2018
2019 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
2020 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2021 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
2022 for selection in &mut selections {
2023 let start = selection.start.to_display_point(&display_map);
2024 let end = selection.end.to_display_point(&display_map);
2025
2026 if start != end {
2027 selection.start = selection.end.clone();
2028 } else {
2029 let cursor = movement::right(&display_map, end)
2030 .unwrap()
2031 .to_point(&display_map);
2032 selection.start = cursor;
2033 selection.end = cursor;
2034 }
2035 selection.reversed = false;
2036 selection.goal = SelectionGoal::None;
2037 }
2038 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2039 }
2040
2041 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
2042 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2043 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
2044 for selection in &mut selections {
2045 let head = selection.head().to_display_point(&display_map);
2046 let cursor = movement::right(&display_map, head)
2047 .unwrap()
2048 .to_point(&display_map);
2049 selection.set_head(cursor);
2050 selection.goal = SelectionGoal::None;
2051 }
2052 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2053 }
2054
2055 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
2056 if matches!(self.mode, EditorMode::SingleLine) {
2057 cx.propagate_action();
2058 return;
2059 }
2060
2061 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2062 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
2063 for selection in &mut selections {
2064 let start = selection.start.to_display_point(&display_map);
2065 let end = selection.end.to_display_point(&display_map);
2066 if start != end {
2067 selection.goal = SelectionGoal::None;
2068 }
2069
2070 let (start, goal) = movement::up(&display_map, start, selection.goal).unwrap();
2071 let cursor = start.to_point(&display_map);
2072 selection.start = cursor;
2073 selection.end = cursor;
2074 selection.goal = goal;
2075 selection.reversed = false;
2076 }
2077 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2078 }
2079
2080 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
2081 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2082 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
2083 for selection in &mut selections {
2084 let head = selection.head().to_display_point(&display_map);
2085 let (head, goal) = movement::up(&display_map, head, selection.goal).unwrap();
2086 let cursor = head.to_point(&display_map);
2087 selection.set_head(cursor);
2088 selection.goal = goal;
2089 }
2090 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2091 }
2092
2093 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
2094 if matches!(self.mode, EditorMode::SingleLine) {
2095 cx.propagate_action();
2096 return;
2097 }
2098
2099 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2100 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
2101 for selection in &mut selections {
2102 let start = selection.start.to_display_point(&display_map);
2103 let end = selection.end.to_display_point(&display_map);
2104 if start != end {
2105 selection.goal = SelectionGoal::None;
2106 }
2107
2108 let (start, goal) = movement::down(&display_map, end, selection.goal).unwrap();
2109 let cursor = start.to_point(&display_map);
2110 selection.start = cursor;
2111 selection.end = cursor;
2112 selection.goal = goal;
2113 selection.reversed = false;
2114 }
2115 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2116 }
2117
2118 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
2119 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2120 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
2121 for selection in &mut selections {
2122 let head = selection.head().to_display_point(&display_map);
2123 let (head, goal) = movement::down(&display_map, head, selection.goal).unwrap();
2124 let cursor = head.to_point(&display_map);
2125 selection.set_head(cursor);
2126 selection.goal = goal;
2127 }
2128 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2129 }
2130
2131 pub fn move_to_previous_word_boundary(
2132 &mut self,
2133 _: &MoveToPreviousWordBoundary,
2134 cx: &mut ViewContext<Self>,
2135 ) {
2136 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2137 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
2138 for selection in &mut selections {
2139 let head = selection.head().to_display_point(&display_map);
2140 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2141 selection.start = cursor.clone();
2142 selection.end = cursor;
2143 selection.reversed = false;
2144 selection.goal = SelectionGoal::None;
2145 }
2146 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2147 }
2148
2149 pub fn select_to_previous_word_boundary(
2150 &mut self,
2151 _: &SelectToPreviousWordBoundary,
2152 cx: &mut ViewContext<Self>,
2153 ) {
2154 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2155 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
2156 for selection in &mut selections {
2157 let head = selection.head().to_display_point(&display_map);
2158 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2159 selection.set_head(cursor);
2160 selection.goal = SelectionGoal::None;
2161 }
2162 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2163 }
2164
2165 pub fn delete_to_previous_word_boundary(
2166 &mut self,
2167 _: &DeleteToPreviousWordBoundary,
2168 cx: &mut ViewContext<Self>,
2169 ) {
2170 self.start_transaction(cx);
2171 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2172 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
2173 for selection in &mut selections {
2174 if selection.is_empty() {
2175 let head = selection.head().to_display_point(&display_map);
2176 let cursor =
2177 movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2178 selection.set_head(cursor);
2179 selection.goal = SelectionGoal::None;
2180 }
2181 }
2182 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2183 self.insert("", cx);
2184 self.end_transaction(cx);
2185 }
2186
2187 pub fn move_to_next_word_boundary(
2188 &mut self,
2189 _: &MoveToNextWordBoundary,
2190 cx: &mut ViewContext<Self>,
2191 ) {
2192 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2193 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
2194 for selection in &mut selections {
2195 let head = selection.head().to_display_point(&display_map);
2196 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
2197 selection.start = cursor;
2198 selection.end = cursor;
2199 selection.reversed = false;
2200 selection.goal = SelectionGoal::None;
2201 }
2202 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2203 }
2204
2205 pub fn select_to_next_word_boundary(
2206 &mut self,
2207 _: &SelectToNextWordBoundary,
2208 cx: &mut ViewContext<Self>,
2209 ) {
2210 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2211 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
2212 for selection in &mut selections {
2213 let head = selection.head().to_display_point(&display_map);
2214 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
2215 selection.set_head(cursor);
2216 selection.goal = SelectionGoal::None;
2217 }
2218 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2219 }
2220
2221 pub fn delete_to_next_word_boundary(
2222 &mut self,
2223 _: &DeleteToNextWordBoundary,
2224 cx: &mut ViewContext<Self>,
2225 ) {
2226 self.start_transaction(cx);
2227 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2228 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
2229 for selection in &mut selections {
2230 if selection.is_empty() {
2231 let head = selection.head().to_display_point(&display_map);
2232 let cursor =
2233 movement::next_word_boundary(&display_map, head).to_point(&display_map);
2234 selection.set_head(cursor);
2235 selection.goal = SelectionGoal::None;
2236 }
2237 }
2238 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2239 self.insert("", cx);
2240 self.end_transaction(cx);
2241 }
2242
2243 pub fn move_to_beginning_of_line(
2244 &mut self,
2245 _: &MoveToBeginningOfLine,
2246 cx: &mut ViewContext<Self>,
2247 ) {
2248 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2249 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
2250 for selection in &mut selections {
2251 let head = selection.head().to_display_point(&display_map);
2252 let new_head = movement::line_beginning(&display_map, head, true);
2253 let cursor = new_head.to_point(&display_map);
2254 selection.start = cursor;
2255 selection.end = cursor;
2256 selection.reversed = false;
2257 selection.goal = SelectionGoal::None;
2258 }
2259 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2260 }
2261
2262 pub fn select_to_beginning_of_line(
2263 &mut self,
2264 SelectToBeginningOfLine(toggle_indent): &SelectToBeginningOfLine,
2265 cx: &mut ViewContext<Self>,
2266 ) {
2267 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2268 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
2269 for selection in &mut selections {
2270 let head = selection.head().to_display_point(&display_map);
2271 let new_head = movement::line_beginning(&display_map, head, *toggle_indent);
2272 selection.set_head(new_head.to_point(&display_map));
2273 selection.goal = SelectionGoal::None;
2274 }
2275 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2276 }
2277
2278 pub fn delete_to_beginning_of_line(
2279 &mut self,
2280 _: &DeleteToBeginningOfLine,
2281 cx: &mut ViewContext<Self>,
2282 ) {
2283 self.start_transaction(cx);
2284 self.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
2285 self.backspace(&Backspace, cx);
2286 self.end_transaction(cx);
2287 }
2288
2289 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
2290 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2291 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
2292 {
2293 for selection in &mut selections {
2294 let head = selection.head().to_display_point(&display_map);
2295 let new_head = movement::line_end(&display_map, head);
2296 let anchor = new_head.to_point(&display_map);
2297 selection.start = anchor.clone();
2298 selection.end = anchor;
2299 selection.reversed = false;
2300 selection.goal = SelectionGoal::None;
2301 }
2302 }
2303 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2304 }
2305
2306 pub fn select_to_end_of_line(&mut self, _: &SelectToEndOfLine, cx: &mut ViewContext<Self>) {
2307 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2308 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
2309 for selection in &mut selections {
2310 let head = selection.head().to_display_point(&display_map);
2311 let new_head = movement::line_end(&display_map, head);
2312 selection.set_head(new_head.to_point(&display_map));
2313 selection.goal = SelectionGoal::None;
2314 }
2315 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2316 }
2317
2318 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
2319 self.start_transaction(cx);
2320 self.select_to_end_of_line(&SelectToEndOfLine, cx);
2321 self.delete(&Delete, cx);
2322 self.end_transaction(cx);
2323 }
2324
2325 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
2326 self.start_transaction(cx);
2327 self.select_to_end_of_line(&SelectToEndOfLine, cx);
2328 self.cut(&Cut, cx);
2329 self.end_transaction(cx);
2330 }
2331
2332 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
2333 let selection = Selection {
2334 id: post_inc(&mut self.next_selection_id),
2335 start: 0,
2336 end: 0,
2337 reversed: false,
2338 goal: SelectionGoal::None,
2339 };
2340 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2341 }
2342
2343 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
2344 let mut selection = self.selections::<Point>(cx).last().unwrap().clone();
2345 selection.set_head(Point::zero());
2346 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2347 }
2348
2349 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
2350 let buffer = self.buffer.read(cx);
2351 let cursor = buffer.len();
2352 let selection = Selection {
2353 id: post_inc(&mut self.next_selection_id),
2354 start: cursor,
2355 end: cursor,
2356 reversed: false,
2357 goal: SelectionGoal::None,
2358 };
2359 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2360 }
2361
2362 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
2363 let mut selection = self.selections::<usize>(cx).last().unwrap().clone();
2364 selection.set_head(self.buffer.read(cx).len());
2365 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2366 }
2367
2368 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
2369 let selection = Selection {
2370 id: post_inc(&mut self.next_selection_id),
2371 start: 0,
2372 end: self.buffer.read(cx).len(),
2373 reversed: false,
2374 goal: SelectionGoal::None,
2375 };
2376 self.update_selections(vec![selection], None, cx);
2377 }
2378
2379 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
2380 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2381 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
2382 let buffer = self.buffer.read(cx);
2383 let max_point = buffer.max_point();
2384 for selection in &mut selections {
2385 let rows = selection.spanned_rows(true, &display_map).buffer_rows;
2386 selection.start = Point::new(rows.start, 0);
2387 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
2388 selection.reversed = false;
2389 }
2390 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2391 }
2392
2393 pub fn split_selection_into_lines(
2394 &mut self,
2395 _: &SplitSelectionIntoLines,
2396 cx: &mut ViewContext<Self>,
2397 ) {
2398 let selections = self.selections::<Point>(cx).collect::<Vec<_>>();
2399 let buffer = self.buffer.read(cx);
2400
2401 let mut to_unfold = Vec::new();
2402 let mut new_selections = Vec::new();
2403 for selection in selections.iter() {
2404 for row in selection.start.row..selection.end.row {
2405 let cursor = Point::new(row, buffer.line_len(row));
2406 new_selections.push(Selection {
2407 id: post_inc(&mut self.next_selection_id),
2408 start: cursor,
2409 end: cursor,
2410 reversed: false,
2411 goal: SelectionGoal::None,
2412 });
2413 }
2414 new_selections.push(Selection {
2415 id: selection.id,
2416 start: selection.end,
2417 end: selection.end,
2418 reversed: false,
2419 goal: SelectionGoal::None,
2420 });
2421 to_unfold.push(selection.start..selection.end);
2422 }
2423 self.unfold_ranges(to_unfold, cx);
2424 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2425 }
2426
2427 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
2428 self.add_selection(true, cx);
2429 }
2430
2431 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
2432 self.add_selection(false, cx);
2433 }
2434
2435 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
2436 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2437 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
2438 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
2439 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
2440 let range = oldest_selection.display_range(&display_map).sorted();
2441 let columns = cmp::min(range.start.column(), range.end.column())
2442 ..cmp::max(range.start.column(), range.end.column());
2443
2444 selections.clear();
2445 let mut stack = Vec::new();
2446 for row in range.start.row()..=range.end.row() {
2447 if let Some(selection) = self.build_columnar_selection(
2448 &display_map,
2449 row,
2450 &columns,
2451 oldest_selection.reversed,
2452 ) {
2453 stack.push(selection.id);
2454 selections.push(selection);
2455 }
2456 }
2457
2458 if above {
2459 stack.reverse();
2460 }
2461
2462 AddSelectionsState { above, stack }
2463 });
2464
2465 let last_added_selection = *state.stack.last().unwrap();
2466 let mut new_selections = Vec::new();
2467 if above == state.above {
2468 let end_row = if above {
2469 0
2470 } else {
2471 display_map.max_point().row()
2472 };
2473
2474 'outer: for selection in selections {
2475 if selection.id == last_added_selection {
2476 let range = selection.display_range(&display_map).sorted();
2477 debug_assert_eq!(range.start.row(), range.end.row());
2478 let mut row = range.start.row();
2479 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
2480 {
2481 start..end
2482 } else {
2483 cmp::min(range.start.column(), range.end.column())
2484 ..cmp::max(range.start.column(), range.end.column())
2485 };
2486
2487 while row != end_row {
2488 if above {
2489 row -= 1;
2490 } else {
2491 row += 1;
2492 }
2493
2494 if let Some(new_selection) = self.build_columnar_selection(
2495 &display_map,
2496 row,
2497 &columns,
2498 selection.reversed,
2499 ) {
2500 state.stack.push(new_selection.id);
2501 if above {
2502 new_selections.push(new_selection);
2503 new_selections.push(selection);
2504 } else {
2505 new_selections.push(selection);
2506 new_selections.push(new_selection);
2507 }
2508
2509 continue 'outer;
2510 }
2511 }
2512 }
2513
2514 new_selections.push(selection);
2515 }
2516 } else {
2517 new_selections = selections;
2518 new_selections.retain(|s| s.id != last_added_selection);
2519 state.stack.pop();
2520 }
2521
2522 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2523 if state.stack.len() > 1 {
2524 self.add_selections_state = Some(state);
2525 }
2526 }
2527
2528 pub fn select_next(&mut self, action: &SelectNext, cx: &mut ViewContext<Self>) {
2529 let replace_newest = action.0;
2530 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2531 let buffer = &display_map.buffer_snapshot;
2532 let mut selections = self.selections::<usize>(cx).collect::<Vec<_>>();
2533 if let Some(mut select_next_state) = self.select_next_state.take() {
2534 let query = &select_next_state.query;
2535 if !select_next_state.done {
2536 let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
2537 let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
2538 let mut next_selected_range = None;
2539
2540 let bytes_after_last_selection =
2541 buffer.bytes_in_range(last_selection.end..buffer.len());
2542 let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
2543 let query_matches = query
2544 .stream_find_iter(bytes_after_last_selection)
2545 .map(|result| (last_selection.end, result))
2546 .chain(
2547 query
2548 .stream_find_iter(bytes_before_first_selection)
2549 .map(|result| (0, result)),
2550 );
2551 for (start_offset, query_match) in query_matches {
2552 let query_match = query_match.unwrap(); // can only fail due to I/O
2553 let offset_range =
2554 start_offset + query_match.start()..start_offset + query_match.end();
2555 let display_range = offset_range.start.to_display_point(&display_map)
2556 ..offset_range.end.to_display_point(&display_map);
2557
2558 if !select_next_state.wordwise
2559 || (!movement::is_inside_word(&display_map, display_range.start)
2560 && !movement::is_inside_word(&display_map, display_range.end))
2561 {
2562 next_selected_range = Some(offset_range);
2563 break;
2564 }
2565 }
2566
2567 if let Some(next_selected_range) = next_selected_range {
2568 if replace_newest {
2569 if let Some(newest_id) =
2570 selections.iter().max_by_key(|s| s.id).map(|s| s.id)
2571 {
2572 selections.retain(|s| s.id != newest_id);
2573 }
2574 }
2575 selections.push(Selection {
2576 id: post_inc(&mut self.next_selection_id),
2577 start: next_selected_range.start,
2578 end: next_selected_range.end,
2579 reversed: false,
2580 goal: SelectionGoal::None,
2581 });
2582 selections.sort_unstable_by_key(|s| s.start);
2583 self.update_selections(selections, Some(Autoscroll::Newest), cx);
2584 } else {
2585 select_next_state.done = true;
2586 }
2587 }
2588
2589 self.select_next_state = Some(select_next_state);
2590 } else if selections.len() == 1 {
2591 let selection = selections.last_mut().unwrap();
2592 if selection.start == selection.end {
2593 let word_range = movement::surrounding_word(
2594 &display_map,
2595 selection.start.to_display_point(&display_map),
2596 );
2597 selection.start = word_range.start.to_offset(&display_map, Bias::Left);
2598 selection.end = word_range.end.to_offset(&display_map, Bias::Left);
2599 selection.goal = SelectionGoal::None;
2600 selection.reversed = false;
2601
2602 let query = buffer
2603 .text_for_range(selection.start..selection.end)
2604 .collect::<String>();
2605 let select_state = SelectNextState {
2606 query: AhoCorasick::new_auto_configured(&[query]),
2607 wordwise: true,
2608 done: false,
2609 };
2610 self.update_selections(selections, Some(Autoscroll::Newest), cx);
2611 self.select_next_state = Some(select_state);
2612 } else {
2613 let query = buffer
2614 .text_for_range(selection.start..selection.end)
2615 .collect::<String>();
2616 self.select_next_state = Some(SelectNextState {
2617 query: AhoCorasick::new_auto_configured(&[query]),
2618 wordwise: false,
2619 done: false,
2620 });
2621 self.select_next(action, cx);
2622 }
2623 }
2624 }
2625
2626 pub fn toggle_comments(&mut self, _: &ToggleComments, cx: &mut ViewContext<Self>) {
2627 // Get the line comment prefix. Split its trailing whitespace into a separate string,
2628 // as that portion won't be used for detecting if a line is a comment.
2629 let full_comment_prefix =
2630 if let Some(prefix) = self.language(cx).and_then(|l| l.line_comment_prefix()) {
2631 prefix.to_string()
2632 } else {
2633 return;
2634 };
2635 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
2636 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
2637
2638 self.start_transaction(cx);
2639 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
2640 let mut all_selection_lines_are_comments = true;
2641 let mut edit_ranges = Vec::new();
2642 let mut last_toggled_row = None;
2643 self.buffer.update(cx, |buffer, cx| {
2644 for selection in &mut selections {
2645 edit_ranges.clear();
2646
2647 let end_row =
2648 if selection.end.row > selection.start.row && selection.end.column == 0 {
2649 selection.end.row
2650 } else {
2651 selection.end.row + 1
2652 };
2653
2654 for row in selection.start.row..end_row {
2655 // If multiple selections contain a given row, avoid processing that
2656 // row more than once.
2657 if last_toggled_row == Some(row) {
2658 continue;
2659 } else {
2660 last_toggled_row = Some(row);
2661 }
2662
2663 if buffer.is_line_blank(row) {
2664 continue;
2665 }
2666
2667 let start = Point::new(row, buffer.indent_column_for_line(row));
2668 let mut line_bytes = buffer
2669 .bytes_in_range(start..buffer.max_point())
2670 .flatten()
2671 .copied();
2672
2673 // If this line currently begins with the line comment prefix, then record
2674 // the range containing the prefix.
2675 if all_selection_lines_are_comments
2676 && line_bytes
2677 .by_ref()
2678 .take(comment_prefix.len())
2679 .eq(comment_prefix.bytes())
2680 {
2681 // Include any whitespace that matches the comment prefix.
2682 let matching_whitespace_len = line_bytes
2683 .zip(comment_prefix_whitespace.bytes())
2684 .take_while(|(a, b)| a == b)
2685 .count() as u32;
2686 let end = Point::new(
2687 row,
2688 start.column + comment_prefix.len() as u32 + matching_whitespace_len,
2689 );
2690 edit_ranges.push(start..end);
2691 }
2692 // If this line does not begin with the line comment prefix, then record
2693 // the position where the prefix should be inserted.
2694 else {
2695 all_selection_lines_are_comments = false;
2696 edit_ranges.push(start..start);
2697 }
2698 }
2699
2700 if !edit_ranges.is_empty() {
2701 if all_selection_lines_are_comments {
2702 buffer.edit(edit_ranges.iter().cloned(), "", cx);
2703 } else {
2704 let min_column = edit_ranges.iter().map(|r| r.start.column).min().unwrap();
2705 let edit_ranges = edit_ranges.iter().map(|range| {
2706 let position = Point::new(range.start.row, min_column);
2707 position..position
2708 });
2709 buffer.edit(edit_ranges, &full_comment_prefix, cx);
2710 }
2711 }
2712 }
2713 });
2714
2715 self.update_selections(
2716 self.selections::<usize>(cx).collect(),
2717 Some(Autoscroll::Fit),
2718 cx,
2719 );
2720 self.end_transaction(cx);
2721 }
2722
2723 pub fn select_larger_syntax_node(
2724 &mut self,
2725 _: &SelectLargerSyntaxNode,
2726 cx: &mut ViewContext<Self>,
2727 ) {
2728 let old_selections = self.selections::<usize>(cx).collect::<Box<_>>();
2729 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2730 let buffer = self.buffer.read(cx);
2731
2732 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
2733 let mut selected_larger_node = false;
2734 let mut new_selections = old_selections
2735 .iter()
2736 .map(|selection| {
2737 let old_range = selection.start..selection.end;
2738 let mut new_range = old_range.clone();
2739 while let Some(containing_range) =
2740 buffer.range_for_syntax_ancestor(new_range.clone())
2741 {
2742 new_range = containing_range;
2743 if !display_map.intersects_fold(new_range.start)
2744 && !display_map.intersects_fold(new_range.end)
2745 {
2746 break;
2747 }
2748 }
2749
2750 selected_larger_node |= new_range != old_range;
2751 Selection {
2752 id: selection.id,
2753 start: new_range.start,
2754 end: new_range.end,
2755 goal: SelectionGoal::None,
2756 reversed: selection.reversed,
2757 }
2758 })
2759 .collect::<Vec<_>>();
2760
2761 if selected_larger_node {
2762 stack.push(old_selections);
2763 new_selections.sort_unstable_by_key(|selection| selection.start);
2764 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2765 }
2766 self.select_larger_syntax_node_stack = stack;
2767 }
2768
2769 pub fn select_smaller_syntax_node(
2770 &mut self,
2771 _: &SelectSmallerSyntaxNode,
2772 cx: &mut ViewContext<Self>,
2773 ) {
2774 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
2775 if let Some(selections) = stack.pop() {
2776 self.update_selections(selections.to_vec(), Some(Autoscroll::Fit), cx);
2777 }
2778 self.select_larger_syntax_node_stack = stack;
2779 }
2780
2781 pub fn move_to_enclosing_bracket(
2782 &mut self,
2783 _: &MoveToEnclosingBracket,
2784 cx: &mut ViewContext<Self>,
2785 ) {
2786 let mut selections = self.selections::<usize>(cx).collect::<Vec<_>>();
2787 let buffer = self.buffer.read(cx.as_ref());
2788 for selection in &mut selections {
2789 if let Some((open_range, close_range)) =
2790 buffer.enclosing_bracket_ranges(selection.start..selection.end)
2791 {
2792 let close_range = close_range.to_inclusive();
2793 let destination = if close_range.contains(&selection.start)
2794 && close_range.contains(&selection.end)
2795 {
2796 open_range.end
2797 } else {
2798 *close_range.start()
2799 };
2800 selection.start = destination;
2801 selection.end = destination;
2802 }
2803 }
2804
2805 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2806 }
2807
2808 pub fn show_next_diagnostic(&mut self, _: &ShowNextDiagnostic, cx: &mut ViewContext<Self>) {
2809 let selection = self.newest_selection::<usize>(cx);
2810 let buffer = self.buffer.read(cx.as_ref());
2811 let active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
2812 active_diagnostics
2813 .primary_range
2814 .to_offset(buffer)
2815 .to_inclusive()
2816 });
2817 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
2818 if active_primary_range.contains(&selection.head()) {
2819 *active_primary_range.end()
2820 } else {
2821 selection.head()
2822 }
2823 } else {
2824 selection.head()
2825 };
2826
2827 loop {
2828 let next_group = buffer
2829 .diagnostics_in_range::<_, usize>(search_start..buffer.len())
2830 .find_map(|(range, diagnostic)| {
2831 if diagnostic.is_primary
2832 && !range.is_empty()
2833 && Some(range.end) != active_primary_range.as_ref().map(|r| *r.end())
2834 {
2835 Some((range, diagnostic.group_id))
2836 } else {
2837 None
2838 }
2839 });
2840
2841 if let Some((primary_range, group_id)) = next_group {
2842 self.activate_diagnostics(group_id, cx);
2843 self.update_selections(
2844 vec![Selection {
2845 id: selection.id,
2846 start: primary_range.start,
2847 end: primary_range.start,
2848 reversed: false,
2849 goal: SelectionGoal::None,
2850 }],
2851 Some(Autoscroll::Center),
2852 cx,
2853 );
2854 break;
2855 } else if search_start == 0 {
2856 break;
2857 } else {
2858 // Cycle around to the start of the buffer.
2859 search_start = 0;
2860 }
2861 }
2862 }
2863
2864 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
2865 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
2866 let buffer = self.buffer.read(cx);
2867 let primary_range_start = active_diagnostics.primary_range.start.to_offset(buffer);
2868 let is_valid = buffer
2869 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone())
2870 .any(|(range, diagnostic)| {
2871 diagnostic.is_primary
2872 && !range.is_empty()
2873 && range.start == primary_range_start
2874 && diagnostic.message == active_diagnostics.primary_message
2875 });
2876
2877 if is_valid != active_diagnostics.is_valid {
2878 active_diagnostics.is_valid = is_valid;
2879 let mut new_styles = HashMap::new();
2880 for (block_id, diagnostic) in &active_diagnostics.blocks {
2881 let build_settings = self.build_settings.clone();
2882 let diagnostic = diagnostic.clone();
2883 new_styles.insert(*block_id, move |cx: &BlockContext| {
2884 let diagnostic = diagnostic.clone();
2885 let settings = build_settings.borrow()(cx.cx);
2886 render_diagnostic(diagnostic, &settings.style)
2887 });
2888 }
2889 self.display_map
2890 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
2891 }
2892 }
2893 }
2894
2895 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) {
2896 self.dismiss_diagnostics(cx);
2897 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
2898 let buffer = self.buffer.read(cx);
2899
2900 let mut primary_range = None;
2901 let mut primary_message = None;
2902 let mut group_end = Point::zero();
2903 let diagnostic_group = buffer
2904 .diagnostic_group::<Point>(group_id)
2905 .map(|(range, diagnostic)| {
2906 if range.end > group_end {
2907 group_end = range.end;
2908 }
2909 if diagnostic.is_primary {
2910 primary_range = Some(range.clone());
2911 primary_message = Some(diagnostic.message.clone());
2912 }
2913 (range, diagnostic.clone())
2914 })
2915 .collect::<Vec<_>>();
2916 let primary_range = primary_range.unwrap();
2917 let primary_message = primary_message.unwrap();
2918 let primary_range =
2919 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
2920
2921 let blocks = display_map
2922 .insert_blocks(
2923 diagnostic_group.iter().map(|(range, diagnostic)| {
2924 let build_settings = self.build_settings.clone();
2925 let diagnostic = diagnostic.clone();
2926 let message_height = diagnostic.message.lines().count() as u8;
2927
2928 BlockProperties {
2929 position: range.start,
2930 height: message_height,
2931 render: Arc::new(move |cx| {
2932 let settings = build_settings.borrow()(cx.cx);
2933 let diagnostic = diagnostic.clone();
2934 render_diagnostic(diagnostic, &settings.style)
2935 }),
2936 disposition: BlockDisposition::Below,
2937 }
2938 }),
2939 cx,
2940 )
2941 .into_iter()
2942 .zip(
2943 diagnostic_group
2944 .into_iter()
2945 .map(|(_, diagnostic)| diagnostic),
2946 )
2947 .collect();
2948
2949 Some(ActiveDiagnosticGroup {
2950 primary_range,
2951 primary_message,
2952 blocks,
2953 is_valid: true,
2954 })
2955 });
2956 }
2957
2958 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
2959 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
2960 self.display_map.update(cx, |display_map, cx| {
2961 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
2962 });
2963 cx.notify();
2964 }
2965 }
2966
2967 fn build_columnar_selection(
2968 &mut self,
2969 display_map: &DisplayMapSnapshot,
2970 row: u32,
2971 columns: &Range<u32>,
2972 reversed: bool,
2973 ) -> Option<Selection<Point>> {
2974 let is_empty = columns.start == columns.end;
2975 let line_len = display_map.line_len(row);
2976 if columns.start < line_len || (is_empty && columns.start == line_len) {
2977 let start = DisplayPoint::new(row, columns.start);
2978 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
2979 Some(Selection {
2980 id: post_inc(&mut self.next_selection_id),
2981 start: start.to_point(display_map),
2982 end: end.to_point(display_map),
2983 reversed,
2984 goal: SelectionGoal::ColumnRange {
2985 start: columns.start,
2986 end: columns.end,
2987 },
2988 })
2989 } else {
2990 None
2991 }
2992 }
2993
2994 pub fn active_selection_sets<'a>(
2995 &'a self,
2996 cx: &'a AppContext,
2997 ) -> impl 'a + Iterator<Item = SelectionSetId> {
2998 let buffer = self.buffer.read(cx);
2999 let replica_id = buffer.replica_id();
3000 buffer
3001 .selection_sets()
3002 .filter(move |(set_id, set)| {
3003 set.active && (set_id.replica_id != replica_id || **set_id == self.selection_set_id)
3004 })
3005 .map(|(set_id, _)| *set_id)
3006 }
3007
3008 pub fn intersecting_selections<'a>(
3009 &'a self,
3010 set_id: SelectionSetId,
3011 range: Range<DisplayPoint>,
3012 cx: &'a mut MutableAppContext,
3013 ) -> impl 'a + Iterator<Item = Selection<DisplayPoint>> {
3014 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3015 let buffer = self.buffer.read(cx);
3016
3017 let pending_selection = if set_id == self.selection_set_id {
3018 self.pending_selection.as_ref().and_then(|pending| {
3019 let selection_start = pending.selection.start.to_display_point(&display_map);
3020 let selection_end = pending.selection.end.to_display_point(&display_map);
3021 if selection_start <= range.end || selection_end <= range.end {
3022 Some(Selection {
3023 id: pending.selection.id,
3024 start: selection_start,
3025 end: selection_end,
3026 reversed: pending.selection.reversed,
3027 goal: pending.selection.goal,
3028 })
3029 } else {
3030 None
3031 }
3032 })
3033 } else {
3034 None
3035 };
3036
3037 let range = (range.start.to_offset(&display_map, Bias::Left), Bias::Left)
3038 ..(range.end.to_offset(&display_map, Bias::Left), Bias::Right);
3039 let selections = self
3040 .buffer
3041 .read(cx)
3042 .selection_set(set_id)
3043 .unwrap()
3044 .intersecting_selections::<Point, _>(range, buffer);
3045
3046 selections
3047 .map(move |s| Selection {
3048 id: s.id,
3049 start: s.start.to_display_point(&display_map),
3050 end: s.end.to_display_point(&display_map),
3051 reversed: s.reversed,
3052 goal: s.goal,
3053 })
3054 .chain(pending_selection)
3055 }
3056
3057 pub fn selections<'a, D>(&self, cx: &'a AppContext) -> impl 'a + Iterator<Item = Selection<D>>
3058 where
3059 D: 'a + TextDimension<'a> + Ord,
3060 {
3061 let buffer = self.buffer.read(cx);
3062 let mut selections = self.selection_set(cx).selections::<D>(buffer).peekable();
3063 let mut pending_selection = self.pending_selection(cx);
3064 iter::from_fn(move || {
3065 if let Some(pending) = pending_selection.as_mut() {
3066 while let Some(next_selection) = selections.peek() {
3067 if pending.start <= next_selection.end && pending.end >= next_selection.start {
3068 let next_selection = selections.next().unwrap();
3069 if next_selection.start < pending.start {
3070 pending.start = next_selection.start;
3071 }
3072 if next_selection.end > pending.end {
3073 pending.end = next_selection.end;
3074 }
3075 } else if next_selection.end < pending.start {
3076 return selections.next();
3077 } else {
3078 break;
3079 }
3080 }
3081
3082 pending_selection.take()
3083 } else {
3084 selections.next()
3085 }
3086 })
3087 }
3088
3089 fn pending_selection<'a, D>(&self, cx: &'a AppContext) -> Option<Selection<D>>
3090 where
3091 D: 'a + TextDimension<'a>,
3092 {
3093 let buffer = self.buffer.read(cx);
3094 self.pending_selection.as_ref().map(|pending| Selection {
3095 id: pending.selection.id,
3096 start: pending.selection.start.summary::<D>(buffer),
3097 end: pending.selection.end.summary::<D>(buffer),
3098 reversed: pending.selection.reversed,
3099 goal: pending.selection.goal,
3100 })
3101 }
3102
3103 fn selection_count<'a>(&self, cx: &'a AppContext) -> usize {
3104 let mut selection_count = self.selection_set(cx).len();
3105 if self.pending_selection.is_some() {
3106 selection_count += 1;
3107 }
3108 selection_count
3109 }
3110
3111 pub fn oldest_selection<'a, T>(&self, cx: &'a AppContext) -> Selection<T>
3112 where
3113 T: 'a + TextDimension<'a>,
3114 {
3115 let buffer = self.buffer.read(cx);
3116 self.selection_set(cx)
3117 .oldest_selection(buffer)
3118 .or_else(|| self.pending_selection(cx))
3119 .unwrap()
3120 }
3121
3122 pub fn newest_selection<'a, T>(&self, cx: &'a AppContext) -> Selection<T>
3123 where
3124 T: 'a + TextDimension<'a>,
3125 {
3126 let buffer = self.buffer.read(cx);
3127 self.pending_selection(cx)
3128 .or_else(|| self.selection_set(cx).newest_selection(buffer))
3129 .unwrap()
3130 }
3131
3132 fn selection_set<'a>(&self, cx: &'a AppContext) -> &'a SelectionSet {
3133 self.buffer
3134 .read(cx)
3135 .selection_set(self.selection_set_id)
3136 .unwrap()
3137 }
3138
3139 pub fn update_selections<T>(
3140 &mut self,
3141 mut selections: Vec<Selection<T>>,
3142 autoscroll: Option<Autoscroll>,
3143 cx: &mut ViewContext<Self>,
3144 ) where
3145 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
3146 {
3147 // Merge overlapping selections.
3148 let buffer = self.buffer.read(cx);
3149 let mut i = 1;
3150 while i < selections.len() {
3151 if selections[i - 1].end >= selections[i].start {
3152 let removed = selections.remove(i);
3153 if removed.start < selections[i - 1].start {
3154 selections[i - 1].start = removed.start;
3155 }
3156 if removed.end > selections[i - 1].end {
3157 selections[i - 1].end = removed.end;
3158 }
3159 } else {
3160 i += 1;
3161 }
3162 }
3163
3164 self.pending_selection = None;
3165 self.add_selections_state = None;
3166 self.select_next_state = None;
3167 self.select_larger_syntax_node_stack.clear();
3168 while let Some(autoclose_pair_state) = self.autoclose_stack.last() {
3169 let all_selections_inside_autoclose_ranges =
3170 if selections.len() == autoclose_pair_state.ranges.len() {
3171 selections
3172 .iter()
3173 .zip(autoclose_pair_state.ranges.ranges::<Point>(buffer))
3174 .all(|(selection, autoclose_range)| {
3175 let head = selection.head().to_point(&*buffer);
3176 autoclose_range.start <= head && autoclose_range.end >= head
3177 })
3178 } else {
3179 false
3180 };
3181
3182 if all_selections_inside_autoclose_ranges {
3183 break;
3184 } else {
3185 self.autoclose_stack.pop();
3186 }
3187 }
3188
3189 if let Some(autoscroll) = autoscroll {
3190 self.request_autoscroll(autoscroll, cx);
3191 }
3192 self.pause_cursor_blinking(cx);
3193
3194 self.buffer.update(cx, |buffer, cx| {
3195 buffer
3196 .update_selection_set(self.selection_set_id, &selections, cx)
3197 .unwrap();
3198 });
3199 }
3200
3201 fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
3202 self.autoscroll_request = Some(autoscroll);
3203 cx.notify();
3204 }
3205
3206 fn start_transaction(&mut self, cx: &mut ViewContext<Self>) {
3207 self.end_selection(cx);
3208 self.buffer.update(cx, |buffer, _| {
3209 buffer
3210 .start_transaction(Some(self.selection_set_id))
3211 .unwrap()
3212 });
3213 }
3214
3215 fn end_transaction(&self, cx: &mut ViewContext<Self>) {
3216 self.buffer.update(cx, |buffer, cx| {
3217 buffer
3218 .end_transaction(Some(self.selection_set_id), cx)
3219 .unwrap()
3220 });
3221 }
3222
3223 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
3224 log::info!("Editor::page_up");
3225 }
3226
3227 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
3228 log::info!("Editor::page_down");
3229 }
3230
3231 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
3232 let mut fold_ranges = Vec::new();
3233
3234 let selections = self.selections::<Point>(cx).collect::<Vec<_>>();
3235 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3236 for selection in selections {
3237 let range = selection.display_range(&display_map).sorted();
3238 let buffer_start_row = range.start.to_point(&display_map).row;
3239
3240 for row in (0..=range.end.row()).rev() {
3241 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
3242 let fold_range = self.foldable_range_for_line(&display_map, row);
3243 if fold_range.end.row >= buffer_start_row {
3244 fold_ranges.push(fold_range);
3245 if row <= range.start.row() {
3246 break;
3247 }
3248 }
3249 }
3250 }
3251 }
3252
3253 self.fold_ranges(fold_ranges, cx);
3254 }
3255
3256 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
3257 let selections = self.selections::<Point>(cx).collect::<Vec<_>>();
3258 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3259 let buffer = self.buffer.read(cx);
3260 let ranges = selections
3261 .iter()
3262 .map(|s| {
3263 let range = s.display_range(&display_map).sorted();
3264 let mut start = range.start.to_point(&display_map);
3265 let mut end = range.end.to_point(&display_map);
3266 start.column = 0;
3267 end.column = buffer.line_len(end.row);
3268 start..end
3269 })
3270 .collect::<Vec<_>>();
3271 self.unfold_ranges(ranges, cx);
3272 }
3273
3274 fn is_line_foldable(&self, display_map: &DisplayMapSnapshot, display_row: u32) -> bool {
3275 let max_point = display_map.max_point();
3276 if display_row >= max_point.row() {
3277 false
3278 } else {
3279 let (start_indent, is_blank) = display_map.line_indent(display_row);
3280 if is_blank {
3281 false
3282 } else {
3283 for display_row in display_row + 1..=max_point.row() {
3284 let (indent, is_blank) = display_map.line_indent(display_row);
3285 if !is_blank {
3286 return indent > start_indent;
3287 }
3288 }
3289 false
3290 }
3291 }
3292 }
3293
3294 fn foldable_range_for_line(
3295 &self,
3296 display_map: &DisplayMapSnapshot,
3297 start_row: u32,
3298 ) -> Range<Point> {
3299 let max_point = display_map.max_point();
3300
3301 let (start_indent, _) = display_map.line_indent(start_row);
3302 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
3303 let mut end = None;
3304 for row in start_row + 1..=max_point.row() {
3305 let (indent, is_blank) = display_map.line_indent(row);
3306 if !is_blank && indent <= start_indent {
3307 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
3308 break;
3309 }
3310 }
3311
3312 let end = end.unwrap_or(max_point);
3313 return start.to_point(display_map)..end.to_point(display_map);
3314 }
3315
3316 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
3317 let selections = self.selections::<Point>(cx);
3318 let ranges = selections.map(|s| s.start..s.end).collect();
3319 self.fold_ranges(ranges, cx);
3320 }
3321
3322 fn fold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
3323 if !ranges.is_empty() {
3324 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
3325 self.request_autoscroll(Autoscroll::Fit, cx);
3326 cx.notify();
3327 }
3328 }
3329
3330 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
3331 if !ranges.is_empty() {
3332 self.display_map
3333 .update(cx, |map, cx| map.unfold(ranges, cx));
3334 self.request_autoscroll(Autoscroll::Fit, cx);
3335 cx.notify();
3336 }
3337 }
3338
3339 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
3340 self.display_map
3341 .update(cx, |map, cx| map.snapshot(cx))
3342 .longest_row()
3343 }
3344
3345 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
3346 self.display_map
3347 .update(cx, |map, cx| map.snapshot(cx))
3348 .max_point()
3349 }
3350
3351 pub fn text(&self, cx: &AppContext) -> String {
3352 self.buffer.read(cx).text()
3353 }
3354
3355 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
3356 self.display_map
3357 .update(cx, |map, cx| map.snapshot(cx))
3358 .text()
3359 }
3360
3361 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
3362 self.display_map
3363 .update(cx, |map, cx| map.set_wrap_width(width, cx))
3364 }
3365
3366 pub fn set_highlighted_row(&mut self, row: Option<u32>) {
3367 self.highlighted_row = row;
3368 }
3369
3370 pub fn highlighted_row(&mut self) -> Option<u32> {
3371 self.highlighted_row
3372 }
3373
3374 fn next_blink_epoch(&mut self) -> usize {
3375 self.blink_epoch += 1;
3376 self.blink_epoch
3377 }
3378
3379 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
3380 self.show_local_cursors = true;
3381 cx.notify();
3382
3383 let epoch = self.next_blink_epoch();
3384 cx.spawn(|this, mut cx| {
3385 let this = this.downgrade();
3386 async move {
3387 Timer::after(CURSOR_BLINK_INTERVAL).await;
3388 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
3389 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
3390 }
3391 }
3392 })
3393 .detach();
3394 }
3395
3396 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
3397 if epoch == self.blink_epoch {
3398 self.blinking_paused = false;
3399 self.blink_cursors(epoch, cx);
3400 }
3401 }
3402
3403 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
3404 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
3405 self.show_local_cursors = !self.show_local_cursors;
3406 cx.notify();
3407
3408 let epoch = self.next_blink_epoch();
3409 cx.spawn(|this, mut cx| {
3410 let this = this.downgrade();
3411 async move {
3412 Timer::after(CURSOR_BLINK_INTERVAL).await;
3413 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
3414 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
3415 }
3416 }
3417 })
3418 .detach();
3419 }
3420 }
3421
3422 pub fn show_local_cursors(&self) -> bool {
3423 self.show_local_cursors
3424 }
3425
3426 fn on_buffer_changed(&mut self, _: ModelHandle<Buffer>, cx: &mut ViewContext<Self>) {
3427 self.refresh_active_diagnostics(cx);
3428 cx.notify();
3429 }
3430
3431 fn on_buffer_event(
3432 &mut self,
3433 _: ModelHandle<Buffer>,
3434 event: &language::Event,
3435 cx: &mut ViewContext<Self>,
3436 ) {
3437 match event {
3438 language::Event::Edited => cx.emit(Event::Edited),
3439 language::Event::Dirtied => cx.emit(Event::Dirtied),
3440 language::Event::Saved => cx.emit(Event::Saved),
3441 language::Event::FileHandleChanged => cx.emit(Event::FileHandleChanged),
3442 language::Event::Reloaded => cx.emit(Event::FileHandleChanged),
3443 language::Event::Closed => cx.emit(Event::Closed),
3444 _ => {}
3445 }
3446 }
3447
3448 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
3449 cx.notify();
3450 }
3451}
3452
3453impl Snapshot {
3454 pub fn is_focused(&self) -> bool {
3455 self.is_focused
3456 }
3457
3458 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
3459 self.placeholder_text.as_ref()
3460 }
3461
3462 pub fn scroll_position(&self) -> Vector2F {
3463 compute_scroll_position(
3464 &self.display_snapshot,
3465 self.scroll_position,
3466 &self.scroll_top_anchor,
3467 )
3468 }
3469}
3470
3471impl Deref for Snapshot {
3472 type Target = DisplayMapSnapshot;
3473
3474 fn deref(&self) -> &Self::Target {
3475 &self.display_snapshot
3476 }
3477}
3478
3479impl EditorSettings {
3480 #[cfg(any(test, feature = "test-support"))]
3481 pub fn test(cx: &AppContext) -> Self {
3482 Self {
3483 tab_size: 4,
3484 soft_wrap: SoftWrap::None,
3485 style: {
3486 let font_cache: &gpui::FontCache = cx.font_cache();
3487 let font_family_name = Arc::from("Monaco");
3488 let font_properties = Default::default();
3489 let font_family_id = font_cache.load_family(&[&font_family_name]).unwrap();
3490 let font_id = font_cache
3491 .select_font(font_family_id, &font_properties)
3492 .unwrap();
3493 EditorStyle {
3494 text: gpui::fonts::TextStyle {
3495 font_family_name,
3496 font_family_id,
3497 font_id,
3498 font_size: 14.,
3499 color: gpui::color::Color::from_u32(0xff0000ff),
3500 font_properties,
3501 underline: None,
3502 },
3503 placeholder_text: None,
3504 background: Default::default(),
3505 gutter_background: Default::default(),
3506 active_line_background: Default::default(),
3507 highlighted_line_background: Default::default(),
3508 line_number: Default::default(),
3509 line_number_active: Default::default(),
3510 selection: Default::default(),
3511 guest_selections: Default::default(),
3512 syntax: Default::default(),
3513 error_diagnostic: Default::default(),
3514 invalid_error_diagnostic: Default::default(),
3515 warning_diagnostic: Default::default(),
3516 invalid_warning_diagnostic: Default::default(),
3517 information_diagnostic: Default::default(),
3518 invalid_information_diagnostic: Default::default(),
3519 hint_diagnostic: Default::default(),
3520 invalid_hint_diagnostic: Default::default(),
3521 }
3522 },
3523 }
3524 }
3525}
3526
3527fn compute_scroll_position(
3528 snapshot: &DisplayMapSnapshot,
3529 mut scroll_position: Vector2F,
3530 scroll_top_anchor: &Anchor,
3531) -> Vector2F {
3532 let scroll_top = scroll_top_anchor.to_display_point(snapshot).row() as f32;
3533 scroll_position.set_y(scroll_top + scroll_position.y());
3534 scroll_position
3535}
3536
3537pub enum Event {
3538 Activate,
3539 Edited,
3540 Blurred,
3541 Dirtied,
3542 Saved,
3543 FileHandleChanged,
3544 Closed,
3545}
3546
3547impl Entity for Editor {
3548 type Event = Event;
3549
3550 fn release(&mut self, cx: &mut MutableAppContext) {
3551 self.buffer.update(cx, |buffer, cx| {
3552 buffer
3553 .remove_selection_set(self.selection_set_id, cx)
3554 .unwrap();
3555 });
3556 }
3557}
3558
3559impl View for Editor {
3560 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
3561 let settings = self.build_settings.borrow_mut()(cx);
3562 self.display_map.update(cx, |map, cx| {
3563 map.set_font(
3564 settings.style.text.font_id,
3565 settings.style.text.font_size,
3566 cx,
3567 )
3568 });
3569 EditorElement::new(self.handle.clone(), settings).boxed()
3570 }
3571
3572 fn ui_name() -> &'static str {
3573 "Editor"
3574 }
3575
3576 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
3577 self.focused = true;
3578 self.blink_cursors(self.blink_epoch, cx);
3579 self.buffer.update(cx, |buffer, cx| {
3580 buffer
3581 .set_active_selection_set(Some(self.selection_set_id), cx)
3582 .unwrap();
3583 });
3584 }
3585
3586 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
3587 self.focused = false;
3588 self.show_local_cursors = false;
3589 self.buffer.update(cx, |buffer, cx| {
3590 buffer.set_active_selection_set(None, cx).unwrap();
3591 });
3592 cx.emit(Event::Blurred);
3593 cx.notify();
3594 }
3595
3596 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
3597 let mut cx = Self::default_keymap_context();
3598 let mode = match self.mode {
3599 EditorMode::SingleLine => "single_line",
3600 EditorMode::AutoHeight { .. } => "auto_height",
3601 EditorMode::Full => "full",
3602 };
3603 cx.map.insert("mode".into(), mode.into());
3604 cx
3605 }
3606}
3607
3608impl SelectionExt for Selection<Point> {
3609 fn display_range(&self, map: &DisplayMapSnapshot) -> Range<DisplayPoint> {
3610 let start = self.start.to_display_point(map);
3611 let end = self.end.to_display_point(map);
3612 if self.reversed {
3613 end..start
3614 } else {
3615 start..end
3616 }
3617 }
3618
3619 fn spanned_rows(
3620 &self,
3621 include_end_if_at_line_start: bool,
3622 map: &DisplayMapSnapshot,
3623 ) -> SpannedRows {
3624 let display_start = self.start.to_display_point(map);
3625 let mut display_end = self.end.to_display_point(map);
3626 if !include_end_if_at_line_start
3627 && display_end.row() != map.max_point().row()
3628 && display_start.row() != display_end.row()
3629 && display_end.column() == 0
3630 {
3631 *display_end.row_mut() -= 1;
3632 }
3633
3634 let (display_start, buffer_start) = map.prev_row_boundary(display_start);
3635 let (display_end, buffer_end) = map.next_row_boundary(display_end);
3636
3637 SpannedRows {
3638 buffer_rows: buffer_start.row..buffer_end.row + 1,
3639 display_rows: display_start.row()..display_end.row() + 1,
3640 }
3641 }
3642}
3643
3644fn render_diagnostic(diagnostic: Diagnostic, style: &EditorStyle) -> ElementBox {
3645 let mut text_style = style.text.clone();
3646 text_style.color = diagnostic_style(diagnostic.severity, true, &style).text;
3647 Text::new(diagnostic.message, text_style).boxed()
3648}
3649
3650pub fn diagnostic_style(
3651 severity: DiagnosticSeverity,
3652 valid: bool,
3653 style: &EditorStyle,
3654) -> DiagnosticStyle {
3655 match (severity, valid) {
3656 (DiagnosticSeverity::ERROR, true) => style.error_diagnostic,
3657 (DiagnosticSeverity::ERROR, false) => style.invalid_error_diagnostic,
3658 (DiagnosticSeverity::WARNING, true) => style.warning_diagnostic,
3659 (DiagnosticSeverity::WARNING, false) => style.invalid_warning_diagnostic,
3660 (DiagnosticSeverity::INFORMATION, true) => style.information_diagnostic,
3661 (DiagnosticSeverity::INFORMATION, false) => style.invalid_information_diagnostic,
3662 (DiagnosticSeverity::HINT, true) => style.hint_diagnostic,
3663 (DiagnosticSeverity::HINT, false) => style.invalid_hint_diagnostic,
3664 _ => Default::default(),
3665 }
3666}
3667
3668#[cfg(test)]
3669mod tests {
3670 use super::*;
3671 use crate::test::sample_text;
3672 use text::Point;
3673 use unindent::Unindent;
3674
3675 #[gpui::test]
3676 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
3677 let buffer = cx.add_model(|cx| Buffer::new(0, "aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx));
3678 let settings = EditorSettings::test(cx);
3679 let (_, editor) =
3680 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3681
3682 editor.update(cx, |view, cx| {
3683 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
3684 });
3685
3686 assert_eq!(
3687 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3688 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
3689 );
3690
3691 editor.update(cx, |view, cx| {
3692 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
3693 });
3694
3695 assert_eq!(
3696 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3697 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
3698 );
3699
3700 editor.update(cx, |view, cx| {
3701 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
3702 });
3703
3704 assert_eq!(
3705 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3706 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
3707 );
3708
3709 editor.update(cx, |view, cx| {
3710 view.end_selection(cx);
3711 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
3712 });
3713
3714 assert_eq!(
3715 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3716 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
3717 );
3718
3719 editor.update(cx, |view, cx| {
3720 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
3721 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
3722 });
3723
3724 assert_eq!(
3725 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3726 [
3727 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
3728 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
3729 ]
3730 );
3731
3732 editor.update(cx, |view, cx| {
3733 view.end_selection(cx);
3734 });
3735
3736 assert_eq!(
3737 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3738 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
3739 );
3740 }
3741
3742 #[gpui::test]
3743 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
3744 let buffer = cx.add_model(|cx| Buffer::new(0, "aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx));
3745 let settings = EditorSettings::test(cx);
3746 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3747
3748 view.update(cx, |view, cx| {
3749 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
3750 assert_eq!(
3751 view.selection_ranges(cx),
3752 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
3753 );
3754 });
3755
3756 view.update(cx, |view, cx| {
3757 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
3758 assert_eq!(
3759 view.selection_ranges(cx),
3760 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
3761 );
3762 });
3763
3764 view.update(cx, |view, cx| {
3765 view.cancel(&Cancel, cx);
3766 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
3767 assert_eq!(
3768 view.selection_ranges(cx),
3769 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
3770 );
3771 });
3772 }
3773
3774 #[gpui::test]
3775 fn test_cancel(cx: &mut gpui::MutableAppContext) {
3776 let buffer = cx.add_model(|cx| Buffer::new(0, "aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx));
3777 let settings = EditorSettings::test(cx);
3778 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3779
3780 view.update(cx, |view, cx| {
3781 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
3782 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
3783 view.end_selection(cx);
3784
3785 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
3786 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
3787 view.end_selection(cx);
3788 assert_eq!(
3789 view.selection_ranges(cx),
3790 [
3791 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
3792 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
3793 ]
3794 );
3795 });
3796
3797 view.update(cx, |view, cx| {
3798 view.cancel(&Cancel, cx);
3799 assert_eq!(
3800 view.selection_ranges(cx),
3801 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
3802 );
3803 });
3804
3805 view.update(cx, |view, cx| {
3806 view.cancel(&Cancel, cx);
3807 assert_eq!(
3808 view.selection_ranges(cx),
3809 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
3810 );
3811 });
3812 }
3813
3814 #[gpui::test]
3815 fn test_fold(cx: &mut gpui::MutableAppContext) {
3816 let buffer = cx.add_model(|cx| {
3817 Buffer::new(
3818 0,
3819 "
3820 impl Foo {
3821 // Hello!
3822
3823 fn a() {
3824 1
3825 }
3826
3827 fn b() {
3828 2
3829 }
3830
3831 fn c() {
3832 3
3833 }
3834 }
3835 "
3836 .unindent(),
3837 cx,
3838 )
3839 });
3840 let settings = EditorSettings::test(&cx);
3841 let (_, view) = cx.add_window(Default::default(), |cx| {
3842 build_editor(buffer.clone(), settings, cx)
3843 });
3844
3845 view.update(cx, |view, cx| {
3846 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx)
3847 .unwrap();
3848 view.fold(&Fold, cx);
3849 assert_eq!(
3850 view.display_text(cx),
3851 "
3852 impl Foo {
3853 // Hello!
3854
3855 fn a() {
3856 1
3857 }
3858
3859 fn b() {…
3860 }
3861
3862 fn c() {…
3863 }
3864 }
3865 "
3866 .unindent(),
3867 );
3868
3869 view.fold(&Fold, cx);
3870 assert_eq!(
3871 view.display_text(cx),
3872 "
3873 impl Foo {…
3874 }
3875 "
3876 .unindent(),
3877 );
3878
3879 view.unfold(&Unfold, cx);
3880 assert_eq!(
3881 view.display_text(cx),
3882 "
3883 impl Foo {
3884 // Hello!
3885
3886 fn a() {
3887 1
3888 }
3889
3890 fn b() {…
3891 }
3892
3893 fn c() {…
3894 }
3895 }
3896 "
3897 .unindent(),
3898 );
3899
3900 view.unfold(&Unfold, cx);
3901 assert_eq!(view.display_text(cx), buffer.read(cx).text());
3902 });
3903 }
3904
3905 #[gpui::test]
3906 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
3907 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(6, 6), cx));
3908 let settings = EditorSettings::test(&cx);
3909 let (_, view) = cx.add_window(Default::default(), |cx| {
3910 build_editor(buffer.clone(), settings, cx)
3911 });
3912
3913 buffer.update(cx, |buffer, cx| {
3914 buffer.edit(
3915 vec![
3916 Point::new(1, 0)..Point::new(1, 0),
3917 Point::new(1, 1)..Point::new(1, 1),
3918 ],
3919 "\t",
3920 cx,
3921 );
3922 });
3923
3924 view.update(cx, |view, cx| {
3925 assert_eq!(
3926 view.selection_ranges(cx),
3927 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
3928 );
3929
3930 view.move_down(&MoveDown, cx);
3931 assert_eq!(
3932 view.selection_ranges(cx),
3933 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
3934 );
3935
3936 view.move_right(&MoveRight, cx);
3937 assert_eq!(
3938 view.selection_ranges(cx),
3939 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
3940 );
3941
3942 view.move_left(&MoveLeft, cx);
3943 assert_eq!(
3944 view.selection_ranges(cx),
3945 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
3946 );
3947
3948 view.move_up(&MoveUp, cx);
3949 assert_eq!(
3950 view.selection_ranges(cx),
3951 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
3952 );
3953
3954 view.move_to_end(&MoveToEnd, cx);
3955 assert_eq!(
3956 view.selection_ranges(cx),
3957 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
3958 );
3959
3960 view.move_to_beginning(&MoveToBeginning, cx);
3961 assert_eq!(
3962 view.selection_ranges(cx),
3963 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
3964 );
3965
3966 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx)
3967 .unwrap();
3968 view.select_to_beginning(&SelectToBeginning, cx);
3969 assert_eq!(
3970 view.selection_ranges(cx),
3971 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
3972 );
3973
3974 view.select_to_end(&SelectToEnd, cx);
3975 assert_eq!(
3976 view.selection_ranges(cx),
3977 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
3978 );
3979 });
3980 }
3981
3982 #[gpui::test]
3983 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
3984 let buffer = cx.add_model(|cx| Buffer::new(0, "ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx));
3985 let settings = EditorSettings::test(&cx);
3986 let (_, view) = cx.add_window(Default::default(), |cx| {
3987 build_editor(buffer.clone(), settings, cx)
3988 });
3989
3990 assert_eq!('ⓐ'.len_utf8(), 3);
3991 assert_eq!('α'.len_utf8(), 2);
3992
3993 view.update(cx, |view, cx| {
3994 view.fold_ranges(
3995 vec![
3996 Point::new(0, 6)..Point::new(0, 12),
3997 Point::new(1, 2)..Point::new(1, 4),
3998 Point::new(2, 4)..Point::new(2, 8),
3999 ],
4000 cx,
4001 );
4002 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
4003
4004 view.move_right(&MoveRight, cx);
4005 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐ".len())]);
4006 view.move_right(&MoveRight, cx);
4007 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ".len())]);
4008 view.move_right(&MoveRight, cx);
4009 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ…".len())]);
4010
4011 view.move_down(&MoveDown, cx);
4012 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "ab…".len())]);
4013 view.move_left(&MoveLeft, cx);
4014 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "ab".len())]);
4015 view.move_left(&MoveLeft, cx);
4016 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "a".len())]);
4017
4018 view.move_down(&MoveDown, cx);
4019 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "α".len())]);
4020 view.move_right(&MoveRight, cx);
4021 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβ".len())]);
4022 view.move_right(&MoveRight, cx);
4023 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβ…".len())]);
4024 view.move_right(&MoveRight, cx);
4025 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβ…ε".len())]);
4026
4027 view.move_up(&MoveUp, cx);
4028 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "ab…e".len())]);
4029 view.move_up(&MoveUp, cx);
4030 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ…ⓔ".len())]);
4031 view.move_left(&MoveLeft, cx);
4032 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ…".len())]);
4033 view.move_left(&MoveLeft, cx);
4034 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ".len())]);
4035 view.move_left(&MoveLeft, cx);
4036 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐ".len())]);
4037 });
4038 }
4039
4040 #[gpui::test]
4041 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
4042 let buffer = cx.add_model(|cx| Buffer::new(0, "ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx));
4043 let settings = EditorSettings::test(&cx);
4044 let (_, view) = cx.add_window(Default::default(), |cx| {
4045 build_editor(buffer.clone(), settings, cx)
4046 });
4047 view.update(cx, |view, cx| {
4048 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx)
4049 .unwrap();
4050
4051 view.move_down(&MoveDown, cx);
4052 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "abcd".len())]);
4053
4054 view.move_down(&MoveDown, cx);
4055 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβγ".len())]);
4056
4057 view.move_down(&MoveDown, cx);
4058 assert_eq!(view.selection_ranges(cx), &[empty_range(3, "abcd".len())]);
4059
4060 view.move_down(&MoveDown, cx);
4061 assert_eq!(view.selection_ranges(cx), &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]);
4062
4063 view.move_up(&MoveUp, cx);
4064 assert_eq!(view.selection_ranges(cx), &[empty_range(3, "abcd".len())]);
4065
4066 view.move_up(&MoveUp, cx);
4067 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβγ".len())]);
4068 });
4069 }
4070
4071 #[gpui::test]
4072 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
4073 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\n def", cx));
4074 let settings = EditorSettings::test(&cx);
4075 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4076 view.update(cx, |view, cx| {
4077 view.select_display_ranges(
4078 &[
4079 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4080 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
4081 ],
4082 cx,
4083 )
4084 .unwrap();
4085 });
4086
4087 view.update(cx, |view, cx| {
4088 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
4089 assert_eq!(
4090 view.selection_ranges(cx),
4091 &[
4092 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4093 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
4094 ]
4095 );
4096 });
4097
4098 view.update(cx, |view, cx| {
4099 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
4100 assert_eq!(
4101 view.selection_ranges(cx),
4102 &[
4103 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4104 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4105 ]
4106 );
4107 });
4108
4109 view.update(cx, |view, cx| {
4110 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
4111 assert_eq!(
4112 view.selection_ranges(cx),
4113 &[
4114 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4115 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
4116 ]
4117 );
4118 });
4119
4120 view.update(cx, |view, cx| {
4121 view.move_to_end_of_line(&MoveToEndOfLine, cx);
4122 assert_eq!(
4123 view.selection_ranges(cx),
4124 &[
4125 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4126 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
4127 ]
4128 );
4129 });
4130
4131 // Moving to the end of line again is a no-op.
4132 view.update(cx, |view, cx| {
4133 view.move_to_end_of_line(&MoveToEndOfLine, cx);
4134 assert_eq!(
4135 view.selection_ranges(cx),
4136 &[
4137 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4138 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
4139 ]
4140 );
4141 });
4142
4143 view.update(cx, |view, cx| {
4144 view.move_left(&MoveLeft, cx);
4145 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
4146 assert_eq!(
4147 view.selection_ranges(cx),
4148 &[
4149 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
4150 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
4151 ]
4152 );
4153 });
4154
4155 view.update(cx, |view, cx| {
4156 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
4157 assert_eq!(
4158 view.selection_ranges(cx),
4159 &[
4160 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
4161 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
4162 ]
4163 );
4164 });
4165
4166 view.update(cx, |view, cx| {
4167 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
4168 assert_eq!(
4169 view.selection_ranges(cx),
4170 &[
4171 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
4172 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
4173 ]
4174 );
4175 });
4176
4177 view.update(cx, |view, cx| {
4178 view.select_to_end_of_line(&SelectToEndOfLine, cx);
4179 assert_eq!(
4180 view.selection_ranges(cx),
4181 &[
4182 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
4183 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
4184 ]
4185 );
4186 });
4187
4188 view.update(cx, |view, cx| {
4189 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
4190 assert_eq!(view.display_text(cx), "ab\n de");
4191 assert_eq!(
4192 view.selection_ranges(cx),
4193 &[
4194 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4195 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
4196 ]
4197 );
4198 });
4199
4200 view.update(cx, |view, cx| {
4201 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
4202 assert_eq!(view.display_text(cx), "\n");
4203 assert_eq!(
4204 view.selection_ranges(cx),
4205 &[
4206 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4207 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4208 ]
4209 );
4210 });
4211 }
4212
4213 #[gpui::test]
4214 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
4215 let buffer =
4216 cx.add_model(|cx| Buffer::new(0, "use std::str::{foo, bar}\n\n {baz.qux()}", cx));
4217 let settings = EditorSettings::test(&cx);
4218 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4219 view.update(cx, |view, cx| {
4220 view.select_display_ranges(
4221 &[
4222 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
4223 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
4224 ],
4225 cx,
4226 )
4227 .unwrap();
4228 });
4229
4230 view.update(cx, |view, cx| {
4231 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4232 assert_eq!(
4233 view.selection_ranges(cx),
4234 &[
4235 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
4236 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
4237 ]
4238 );
4239 });
4240
4241 view.update(cx, |view, cx| {
4242 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4243 assert_eq!(
4244 view.selection_ranges(cx),
4245 &[
4246 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
4247 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2),
4248 ]
4249 );
4250 });
4251
4252 view.update(cx, |view, cx| {
4253 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4254 assert_eq!(
4255 view.selection_ranges(cx),
4256 &[
4257 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
4258 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
4259 ]
4260 );
4261 });
4262
4263 view.update(cx, |view, cx| {
4264 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4265 assert_eq!(
4266 view.selection_ranges(cx),
4267 &[
4268 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4269 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4270 ]
4271 );
4272 });
4273
4274 view.update(cx, |view, cx| {
4275 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4276 assert_eq!(
4277 view.selection_ranges(cx),
4278 &[
4279 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4280 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 23),
4281 ]
4282 );
4283 });
4284
4285 view.update(cx, |view, cx| {
4286 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4287 assert_eq!(
4288 view.selection_ranges(cx),
4289 &[
4290 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4291 DisplayPoint::new(0, 24)..DisplayPoint::new(0, 24),
4292 ]
4293 );
4294 });
4295
4296 view.update(cx, |view, cx| {
4297 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4298 assert_eq!(
4299 view.selection_ranges(cx),
4300 &[
4301 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
4302 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4303 ]
4304 );
4305 });
4306
4307 view.update(cx, |view, cx| {
4308 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4309 assert_eq!(
4310 view.selection_ranges(cx),
4311 &[
4312 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
4313 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
4314 ]
4315 );
4316 });
4317
4318 view.update(cx, |view, cx| {
4319 view.move_right(&MoveRight, cx);
4320 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
4321 assert_eq!(
4322 view.selection_ranges(cx),
4323 &[
4324 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
4325 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
4326 ]
4327 );
4328 });
4329
4330 view.update(cx, |view, cx| {
4331 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
4332 assert_eq!(
4333 view.selection_ranges(cx),
4334 &[
4335 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 7),
4336 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 2),
4337 ]
4338 );
4339 });
4340
4341 view.update(cx, |view, cx| {
4342 view.select_to_next_word_boundary(&SelectToNextWordBoundary, cx);
4343 assert_eq!(
4344 view.selection_ranges(cx),
4345 &[
4346 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
4347 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
4348 ]
4349 );
4350 });
4351 }
4352
4353 #[gpui::test]
4354 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
4355 let buffer =
4356 cx.add_model(|cx| Buffer::new(0, "use one::{\n two::three::four::five\n};", cx));
4357 let settings = EditorSettings::test(&cx);
4358 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4359
4360 view.update(cx, |view, cx| {
4361 view.set_wrap_width(Some(140.), cx);
4362 assert_eq!(
4363 view.display_text(cx),
4364 "use one::{\n two::three::\n four::five\n};"
4365 );
4366
4367 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx)
4368 .unwrap();
4369
4370 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4371 assert_eq!(
4372 view.selection_ranges(cx),
4373 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
4374 );
4375
4376 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4377 assert_eq!(
4378 view.selection_ranges(cx),
4379 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
4380 );
4381
4382 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4383 assert_eq!(
4384 view.selection_ranges(cx),
4385 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
4386 );
4387
4388 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4389 assert_eq!(
4390 view.selection_ranges(cx),
4391 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
4392 );
4393
4394 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4395 assert_eq!(
4396 view.selection_ranges(cx),
4397 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
4398 );
4399
4400 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4401 assert_eq!(
4402 view.selection_ranges(cx),
4403 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
4404 );
4405 });
4406 }
4407
4408 #[gpui::test]
4409 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
4410 let buffer = cx.add_model(|cx| Buffer::new(0, "one two three four", cx));
4411 let settings = EditorSettings::test(&cx);
4412 let (_, view) = cx.add_window(Default::default(), |cx| {
4413 build_editor(buffer.clone(), settings, cx)
4414 });
4415
4416 view.update(cx, |view, cx| {
4417 view.select_display_ranges(
4418 &[
4419 // an empty selection - the preceding word fragment is deleted
4420 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4421 // characters selected - they are deleted
4422 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
4423 ],
4424 cx,
4425 )
4426 .unwrap();
4427 view.delete_to_previous_word_boundary(&DeleteToPreviousWordBoundary, cx);
4428 });
4429
4430 assert_eq!(buffer.read(cx).text(), "e two te four");
4431
4432 view.update(cx, |view, cx| {
4433 view.select_display_ranges(
4434 &[
4435 // an empty selection - the following word fragment is deleted
4436 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4437 // characters selected - they are deleted
4438 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
4439 ],
4440 cx,
4441 )
4442 .unwrap();
4443 view.delete_to_next_word_boundary(&DeleteToNextWordBoundary, cx);
4444 });
4445
4446 assert_eq!(buffer.read(cx).text(), "e t te our");
4447 }
4448
4449 #[gpui::test]
4450 fn test_newline(cx: &mut gpui::MutableAppContext) {
4451 let buffer = cx.add_model(|cx| Buffer::new(0, "aaaa\n bbbb\n", cx));
4452 let settings = EditorSettings::test(&cx);
4453 let (_, view) = cx.add_window(Default::default(), |cx| {
4454 build_editor(buffer.clone(), settings, cx)
4455 });
4456
4457 view.update(cx, |view, cx| {
4458 view.select_display_ranges(
4459 &[
4460 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4461 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
4462 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
4463 ],
4464 cx,
4465 )
4466 .unwrap();
4467
4468 view.newline(&Newline, cx);
4469 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
4470 });
4471 }
4472
4473 #[gpui::test]
4474 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
4475 let buffer = cx.add_model(|cx| Buffer::new(0, " one two\nthree\n four", cx));
4476 let settings = EditorSettings::test(&cx);
4477 let (_, view) = cx.add_window(Default::default(), |cx| {
4478 build_editor(buffer.clone(), settings, cx)
4479 });
4480
4481 view.update(cx, |view, cx| {
4482 // two selections on the same line
4483 view.select_display_ranges(
4484 &[
4485 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
4486 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
4487 ],
4488 cx,
4489 )
4490 .unwrap();
4491
4492 // indent from mid-tabstop to full tabstop
4493 view.tab(&Tab, cx);
4494 assert_eq!(view.text(cx), " one two\nthree\n four");
4495 assert_eq!(
4496 view.selection_ranges(cx),
4497 &[
4498 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
4499 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
4500 ]
4501 );
4502
4503 // outdent from 1 tabstop to 0 tabstops
4504 view.outdent(&Outdent, cx);
4505 assert_eq!(view.text(cx), "one two\nthree\n four");
4506 assert_eq!(
4507 view.selection_ranges(cx),
4508 &[
4509 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
4510 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
4511 ]
4512 );
4513
4514 // select across line ending
4515 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx)
4516 .unwrap();
4517
4518 // indent and outdent affect only the preceding line
4519 view.tab(&Tab, cx);
4520 assert_eq!(view.text(cx), "one two\n three\n four");
4521 assert_eq!(
4522 view.selection_ranges(cx),
4523 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
4524 );
4525 view.outdent(&Outdent, cx);
4526 assert_eq!(view.text(cx), "one two\nthree\n four");
4527 assert_eq!(
4528 view.selection_ranges(cx),
4529 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
4530 );
4531 });
4532 }
4533
4534 #[gpui::test]
4535 fn test_backspace(cx: &mut gpui::MutableAppContext) {
4536 let buffer = cx.add_model(|cx| {
4537 Buffer::new(
4538 0,
4539 "one two three\nfour five six\nseven eight nine\nten\n",
4540 cx,
4541 )
4542 });
4543 let settings = EditorSettings::test(&cx);
4544 let (_, view) = cx.add_window(Default::default(), |cx| {
4545 build_editor(buffer.clone(), settings, cx)
4546 });
4547
4548 view.update(cx, |view, cx| {
4549 view.select_display_ranges(
4550 &[
4551 // an empty selection - the preceding character is deleted
4552 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4553 // one character selected - it is deleted
4554 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
4555 // a line suffix selected - it is deleted
4556 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
4557 ],
4558 cx,
4559 )
4560 .unwrap();
4561 view.backspace(&Backspace, cx);
4562 });
4563
4564 assert_eq!(
4565 buffer.read(cx).text(),
4566 "oe two three\nfou five six\nseven ten\n"
4567 );
4568 }
4569
4570 #[gpui::test]
4571 fn test_delete(cx: &mut gpui::MutableAppContext) {
4572 let buffer = cx.add_model(|cx| {
4573 Buffer::new(
4574 0,
4575 "one two three\nfour five six\nseven eight nine\nten\n",
4576 cx,
4577 )
4578 });
4579 let settings = EditorSettings::test(&cx);
4580 let (_, view) = cx.add_window(Default::default(), |cx| {
4581 build_editor(buffer.clone(), settings, cx)
4582 });
4583
4584 view.update(cx, |view, cx| {
4585 view.select_display_ranges(
4586 &[
4587 // an empty selection - the following character is deleted
4588 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4589 // one character selected - it is deleted
4590 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
4591 // a line suffix selected - it is deleted
4592 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
4593 ],
4594 cx,
4595 )
4596 .unwrap();
4597 view.delete(&Delete, cx);
4598 });
4599
4600 assert_eq!(
4601 buffer.read(cx).text(),
4602 "on two three\nfou five six\nseven ten\n"
4603 );
4604 }
4605
4606 #[gpui::test]
4607 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
4608 let settings = EditorSettings::test(&cx);
4609 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\ndef\nghi\n", cx));
4610 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4611 view.update(cx, |view, cx| {
4612 view.select_display_ranges(
4613 &[
4614 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4615 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
4616 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
4617 ],
4618 cx,
4619 )
4620 .unwrap();
4621 view.delete_line(&DeleteLine, cx);
4622 assert_eq!(view.display_text(cx), "ghi");
4623 assert_eq!(
4624 view.selection_ranges(cx),
4625 vec![
4626 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4627 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
4628 ]
4629 );
4630 });
4631
4632 let settings = EditorSettings::test(&cx);
4633 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\ndef\nghi\n", cx));
4634 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4635 view.update(cx, |view, cx| {
4636 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx)
4637 .unwrap();
4638 view.delete_line(&DeleteLine, cx);
4639 assert_eq!(view.display_text(cx), "ghi\n");
4640 assert_eq!(
4641 view.selection_ranges(cx),
4642 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
4643 );
4644 });
4645 }
4646
4647 #[gpui::test]
4648 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
4649 let settings = EditorSettings::test(&cx);
4650 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\ndef\nghi\n", cx));
4651 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4652 view.update(cx, |view, cx| {
4653 view.select_display_ranges(
4654 &[
4655 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
4656 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4657 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4658 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
4659 ],
4660 cx,
4661 )
4662 .unwrap();
4663 view.duplicate_line(&DuplicateLine, cx);
4664 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
4665 assert_eq!(
4666 view.selection_ranges(cx),
4667 vec![
4668 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
4669 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
4670 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
4671 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
4672 ]
4673 );
4674 });
4675
4676 let settings = EditorSettings::test(&cx);
4677 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\ndef\nghi\n", cx));
4678 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4679 view.update(cx, |view, cx| {
4680 view.select_display_ranges(
4681 &[
4682 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
4683 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
4684 ],
4685 cx,
4686 )
4687 .unwrap();
4688 view.duplicate_line(&DuplicateLine, cx);
4689 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
4690 assert_eq!(
4691 view.selection_ranges(cx),
4692 vec![
4693 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
4694 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
4695 ]
4696 );
4697 });
4698 }
4699
4700 #[gpui::test]
4701 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
4702 let settings = EditorSettings::test(&cx);
4703 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(10, 5), cx));
4704 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4705 view.update(cx, |view, cx| {
4706 view.fold_ranges(
4707 vec![
4708 Point::new(0, 2)..Point::new(1, 2),
4709 Point::new(2, 3)..Point::new(4, 1),
4710 Point::new(7, 0)..Point::new(8, 4),
4711 ],
4712 cx,
4713 );
4714 view.select_display_ranges(
4715 &[
4716 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4717 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
4718 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
4719 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
4720 ],
4721 cx,
4722 )
4723 .unwrap();
4724 assert_eq!(
4725 view.display_text(cx),
4726 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
4727 );
4728
4729 view.move_line_up(&MoveLineUp, cx);
4730 assert_eq!(
4731 view.display_text(cx),
4732 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
4733 );
4734 assert_eq!(
4735 view.selection_ranges(cx),
4736 vec![
4737 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4738 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4739 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
4740 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
4741 ]
4742 );
4743 });
4744
4745 view.update(cx, |view, cx| {
4746 view.move_line_down(&MoveLineDown, cx);
4747 assert_eq!(
4748 view.display_text(cx),
4749 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
4750 );
4751 assert_eq!(
4752 view.selection_ranges(cx),
4753 vec![
4754 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
4755 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
4756 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
4757 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
4758 ]
4759 );
4760 });
4761
4762 view.update(cx, |view, cx| {
4763 view.move_line_down(&MoveLineDown, cx);
4764 assert_eq!(
4765 view.display_text(cx),
4766 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
4767 );
4768 assert_eq!(
4769 view.selection_ranges(cx),
4770 vec![
4771 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4772 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
4773 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
4774 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
4775 ]
4776 );
4777 });
4778
4779 view.update(cx, |view, cx| {
4780 view.move_line_up(&MoveLineUp, cx);
4781 assert_eq!(
4782 view.display_text(cx),
4783 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
4784 );
4785 assert_eq!(
4786 view.selection_ranges(cx),
4787 vec![
4788 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
4789 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4790 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
4791 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
4792 ]
4793 );
4794 });
4795 }
4796
4797 #[gpui::test]
4798 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
4799 let buffer = cx.add_model(|cx| Buffer::new(0, "one✅ two three four five six ", cx));
4800 let settings = EditorSettings::test(&cx);
4801 let view = cx
4802 .add_window(Default::default(), |cx| {
4803 build_editor(buffer.clone(), settings, cx)
4804 })
4805 .1;
4806
4807 // Cut with three selections. Clipboard text is divided into three slices.
4808 view.update(cx, |view, cx| {
4809 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
4810 view.cut(&Cut, cx);
4811 assert_eq!(view.display_text(cx), "two four six ");
4812 });
4813
4814 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
4815 view.update(cx, |view, cx| {
4816 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
4817 view.paste(&Paste, cx);
4818 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
4819 assert_eq!(
4820 view.selection_ranges(cx),
4821 &[
4822 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
4823 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
4824 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
4825 ]
4826 );
4827 });
4828
4829 // Paste again but with only two cursors. Since the number of cursors doesn't
4830 // match the number of slices in the clipboard, the entire clipboard text
4831 // is pasted at each cursor.
4832 view.update(cx, |view, cx| {
4833 view.select_ranges(vec![0..0, 31..31], None, cx);
4834 view.handle_input(&Input("( ".into()), cx);
4835 view.paste(&Paste, cx);
4836 view.handle_input(&Input(") ".into()), cx);
4837 assert_eq!(
4838 view.display_text(cx),
4839 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
4840 );
4841 });
4842
4843 view.update(cx, |view, cx| {
4844 view.select_ranges(vec![0..0], None, cx);
4845 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
4846 assert_eq!(
4847 view.display_text(cx),
4848 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
4849 );
4850 });
4851
4852 // Cut with three selections, one of which is full-line.
4853 view.update(cx, |view, cx| {
4854 view.select_display_ranges(
4855 &[
4856 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
4857 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
4858 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
4859 ],
4860 cx,
4861 )
4862 .unwrap();
4863 view.cut(&Cut, cx);
4864 assert_eq!(
4865 view.display_text(cx),
4866 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
4867 );
4868 });
4869
4870 // Paste with three selections, noticing how the copied selection that was full-line
4871 // gets inserted before the second cursor.
4872 view.update(cx, |view, cx| {
4873 view.select_display_ranges(
4874 &[
4875 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4876 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
4877 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
4878 ],
4879 cx,
4880 )
4881 .unwrap();
4882 view.paste(&Paste, cx);
4883 assert_eq!(
4884 view.display_text(cx),
4885 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
4886 );
4887 assert_eq!(
4888 view.selection_ranges(cx),
4889 &[
4890 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4891 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4892 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
4893 ]
4894 );
4895 });
4896
4897 // Copy with a single cursor only, which writes the whole line into the clipboard.
4898 view.update(cx, |view, cx| {
4899 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx)
4900 .unwrap();
4901 view.copy(&Copy, cx);
4902 });
4903
4904 // Paste with three selections, noticing how the copied full-line selection is inserted
4905 // before the empty selections but replaces the selection that is non-empty.
4906 view.update(cx, |view, cx| {
4907 view.select_display_ranges(
4908 &[
4909 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4910 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
4911 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4912 ],
4913 cx,
4914 )
4915 .unwrap();
4916 view.paste(&Paste, cx);
4917 assert_eq!(
4918 view.display_text(cx),
4919 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
4920 );
4921 assert_eq!(
4922 view.selection_ranges(cx),
4923 &[
4924 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
4925 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
4926 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
4927 ]
4928 );
4929 });
4930 }
4931
4932 #[gpui::test]
4933 fn test_select_all(cx: &mut gpui::MutableAppContext) {
4934 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\nde\nfgh", cx));
4935 let settings = EditorSettings::test(&cx);
4936 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4937 view.update(cx, |view, cx| {
4938 view.select_all(&SelectAll, cx);
4939 assert_eq!(
4940 view.selection_ranges(cx),
4941 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
4942 );
4943 });
4944 }
4945
4946 #[gpui::test]
4947 fn test_select_line(cx: &mut gpui::MutableAppContext) {
4948 let settings = EditorSettings::test(&cx);
4949 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(6, 5), cx));
4950 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4951 view.update(cx, |view, cx| {
4952 view.select_display_ranges(
4953 &[
4954 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
4955 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4956 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4957 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
4958 ],
4959 cx,
4960 )
4961 .unwrap();
4962 view.select_line(&SelectLine, cx);
4963 assert_eq!(
4964 view.selection_ranges(cx),
4965 vec![
4966 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
4967 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
4968 ]
4969 );
4970 });
4971
4972 view.update(cx, |view, cx| {
4973 view.select_line(&SelectLine, cx);
4974 assert_eq!(
4975 view.selection_ranges(cx),
4976 vec![
4977 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
4978 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
4979 ]
4980 );
4981 });
4982
4983 view.update(cx, |view, cx| {
4984 view.select_line(&SelectLine, cx);
4985 assert_eq!(
4986 view.selection_ranges(cx),
4987 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
4988 );
4989 });
4990 }
4991
4992 #[gpui::test]
4993 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
4994 let settings = EditorSettings::test(&cx);
4995 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(9, 5), cx));
4996 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4997 view.update(cx, |view, cx| {
4998 view.fold_ranges(
4999 vec![
5000 Point::new(0, 2)..Point::new(1, 2),
5001 Point::new(2, 3)..Point::new(4, 1),
5002 Point::new(7, 0)..Point::new(8, 4),
5003 ],
5004 cx,
5005 );
5006 view.select_display_ranges(
5007 &[
5008 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
5009 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5010 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5011 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
5012 ],
5013 cx,
5014 )
5015 .unwrap();
5016 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
5017 });
5018
5019 view.update(cx, |view, cx| {
5020 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
5021 assert_eq!(
5022 view.display_text(cx),
5023 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
5024 );
5025 assert_eq!(
5026 view.selection_ranges(cx),
5027 [
5028 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5029 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5030 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
5031 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
5032 ]
5033 );
5034 });
5035
5036 view.update(cx, |view, cx| {
5037 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx)
5038 .unwrap();
5039 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
5040 assert_eq!(
5041 view.display_text(cx),
5042 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
5043 );
5044 assert_eq!(
5045 view.selection_ranges(cx),
5046 [
5047 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
5048 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
5049 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
5050 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
5051 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
5052 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
5053 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
5054 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
5055 ]
5056 );
5057 });
5058 }
5059
5060 #[gpui::test]
5061 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
5062 let settings = EditorSettings::test(&cx);
5063 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\ndefghi\n\njk\nlmno\n", cx));
5064 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5065
5066 view.update(cx, |view, cx| {
5067 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx)
5068 .unwrap();
5069 });
5070 view.update(cx, |view, cx| {
5071 view.add_selection_above(&AddSelectionAbove, cx);
5072 assert_eq!(
5073 view.selection_ranges(cx),
5074 vec![
5075 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5076 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
5077 ]
5078 );
5079 });
5080
5081 view.update(cx, |view, cx| {
5082 view.add_selection_above(&AddSelectionAbove, cx);
5083 assert_eq!(
5084 view.selection_ranges(cx),
5085 vec![
5086 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5087 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
5088 ]
5089 );
5090 });
5091
5092 view.update(cx, |view, cx| {
5093 view.add_selection_below(&AddSelectionBelow, cx);
5094 assert_eq!(
5095 view.selection_ranges(cx),
5096 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
5097 );
5098 });
5099
5100 view.update(cx, |view, cx| {
5101 view.add_selection_below(&AddSelectionBelow, cx);
5102 assert_eq!(
5103 view.selection_ranges(cx),
5104 vec![
5105 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
5106 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
5107 ]
5108 );
5109 });
5110
5111 view.update(cx, |view, cx| {
5112 view.add_selection_below(&AddSelectionBelow, cx);
5113 assert_eq!(
5114 view.selection_ranges(cx),
5115 vec![
5116 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
5117 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
5118 ]
5119 );
5120 });
5121
5122 view.update(cx, |view, cx| {
5123 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx)
5124 .unwrap();
5125 });
5126 view.update(cx, |view, cx| {
5127 view.add_selection_below(&AddSelectionBelow, cx);
5128 assert_eq!(
5129 view.selection_ranges(cx),
5130 vec![
5131 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
5132 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
5133 ]
5134 );
5135 });
5136
5137 view.update(cx, |view, cx| {
5138 view.add_selection_below(&AddSelectionBelow, cx);
5139 assert_eq!(
5140 view.selection_ranges(cx),
5141 vec![
5142 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
5143 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
5144 ]
5145 );
5146 });
5147
5148 view.update(cx, |view, cx| {
5149 view.add_selection_above(&AddSelectionAbove, cx);
5150 assert_eq!(
5151 view.selection_ranges(cx),
5152 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
5153 );
5154 });
5155
5156 view.update(cx, |view, cx| {
5157 view.add_selection_above(&AddSelectionAbove, cx);
5158 assert_eq!(
5159 view.selection_ranges(cx),
5160 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
5161 );
5162 });
5163
5164 view.update(cx, |view, cx| {
5165 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx)
5166 .unwrap();
5167 view.add_selection_below(&AddSelectionBelow, cx);
5168 assert_eq!(
5169 view.selection_ranges(cx),
5170 vec![
5171 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5172 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
5173 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
5174 ]
5175 );
5176 });
5177
5178 view.update(cx, |view, cx| {
5179 view.add_selection_below(&AddSelectionBelow, cx);
5180 assert_eq!(
5181 view.selection_ranges(cx),
5182 vec![
5183 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5184 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
5185 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
5186 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
5187 ]
5188 );
5189 });
5190
5191 view.update(cx, |view, cx| {
5192 view.add_selection_above(&AddSelectionAbove, cx);
5193 assert_eq!(
5194 view.selection_ranges(cx),
5195 vec![
5196 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5197 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
5198 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
5199 ]
5200 );
5201 });
5202
5203 view.update(cx, |view, cx| {
5204 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx)
5205 .unwrap();
5206 });
5207 view.update(cx, |view, cx| {
5208 view.add_selection_above(&AddSelectionAbove, cx);
5209 assert_eq!(
5210 view.selection_ranges(cx),
5211 vec![
5212 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
5213 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
5214 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
5215 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
5216 ]
5217 );
5218 });
5219
5220 view.update(cx, |view, cx| {
5221 view.add_selection_below(&AddSelectionBelow, cx);
5222 assert_eq!(
5223 view.selection_ranges(cx),
5224 vec![
5225 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
5226 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
5227 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
5228 ]
5229 );
5230 });
5231 }
5232
5233 #[gpui::test]
5234 async fn test_select_larger_smaller_syntax_node(mut cx: gpui::TestAppContext) {
5235 let settings = cx.read(EditorSettings::test);
5236 let language = Some(Arc::new(Language::new(
5237 LanguageConfig::default(),
5238 Some(tree_sitter_rust::language()),
5239 )));
5240
5241 let text = r#"
5242 use mod1::mod2::{mod3, mod4};
5243
5244 fn fn_1(param1: bool, param2: &str) {
5245 let var1 = "text";
5246 }
5247 "#
5248 .unindent();
5249
5250 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
5251 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
5252 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing())
5253 .await;
5254
5255 view.update(&mut cx, |view, cx| {
5256 view.select_display_ranges(
5257 &[
5258 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
5259 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
5260 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
5261 ],
5262 cx,
5263 )
5264 .unwrap();
5265 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5266 });
5267 assert_eq!(
5268 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
5269 &[
5270 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
5271 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
5272 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
5273 ]
5274 );
5275
5276 view.update(&mut cx, |view, cx| {
5277 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5278 });
5279 assert_eq!(
5280 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
5281 &[
5282 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
5283 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
5284 ]
5285 );
5286
5287 view.update(&mut cx, |view, cx| {
5288 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5289 });
5290 assert_eq!(
5291 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
5292 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
5293 );
5294
5295 // Trying to expand the selected syntax node one more time has no effect.
5296 view.update(&mut cx, |view, cx| {
5297 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5298 });
5299 assert_eq!(
5300 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
5301 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
5302 );
5303
5304 view.update(&mut cx, |view, cx| {
5305 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
5306 });
5307 assert_eq!(
5308 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
5309 &[
5310 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
5311 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
5312 ]
5313 );
5314
5315 view.update(&mut cx, |view, cx| {
5316 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
5317 });
5318 assert_eq!(
5319 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
5320 &[
5321 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
5322 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
5323 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
5324 ]
5325 );
5326
5327 view.update(&mut cx, |view, cx| {
5328 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
5329 });
5330 assert_eq!(
5331 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
5332 &[
5333 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
5334 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
5335 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
5336 ]
5337 );
5338
5339 // Trying to shrink the selected syntax node one more time has no effect.
5340 view.update(&mut cx, |view, cx| {
5341 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
5342 });
5343 assert_eq!(
5344 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
5345 &[
5346 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
5347 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
5348 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
5349 ]
5350 );
5351
5352 // Ensure that we keep expanding the selection if the larger selection starts or ends within
5353 // a fold.
5354 view.update(&mut cx, |view, cx| {
5355 view.fold_ranges(
5356 vec![
5357 Point::new(0, 21)..Point::new(0, 24),
5358 Point::new(3, 20)..Point::new(3, 22),
5359 ],
5360 cx,
5361 );
5362 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5363 });
5364 assert_eq!(
5365 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
5366 &[
5367 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
5368 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
5369 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
5370 ]
5371 );
5372 }
5373
5374 #[gpui::test]
5375 async fn test_autoclose_pairs(mut cx: gpui::TestAppContext) {
5376 let settings = cx.read(EditorSettings::test);
5377 let language = Some(Arc::new(Language::new(
5378 LanguageConfig {
5379 brackets: vec![
5380 BracketPair {
5381 start: "{".to_string(),
5382 end: "}".to_string(),
5383 close: true,
5384 newline: true,
5385 },
5386 BracketPair {
5387 start: "/*".to_string(),
5388 end: " */".to_string(),
5389 close: true,
5390 newline: true,
5391 },
5392 ],
5393 ..Default::default()
5394 },
5395 Some(tree_sitter_rust::language()),
5396 )));
5397
5398 let text = r#"
5399 a
5400
5401 /
5402
5403 "#
5404 .unindent();
5405
5406 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
5407 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
5408 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing())
5409 .await;
5410
5411 view.update(&mut cx, |view, cx| {
5412 view.select_display_ranges(
5413 &[
5414 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
5415 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5416 ],
5417 cx,
5418 )
5419 .unwrap();
5420 view.handle_input(&Input("{".to_string()), cx);
5421 view.handle_input(&Input("{".to_string()), cx);
5422 view.handle_input(&Input("{".to_string()), cx);
5423 assert_eq!(
5424 view.text(cx),
5425 "
5426 {{{}}}
5427 {{{}}}
5428 /
5429
5430 "
5431 .unindent()
5432 );
5433
5434 view.move_right(&MoveRight, cx);
5435 view.handle_input(&Input("}".to_string()), cx);
5436 view.handle_input(&Input("}".to_string()), cx);
5437 view.handle_input(&Input("}".to_string()), cx);
5438 assert_eq!(
5439 view.text(cx),
5440 "
5441 {{{}}}}
5442 {{{}}}}
5443 /
5444
5445 "
5446 .unindent()
5447 );
5448
5449 view.undo(&Undo, cx);
5450 view.handle_input(&Input("/".to_string()), cx);
5451 view.handle_input(&Input("*".to_string()), cx);
5452 assert_eq!(
5453 view.text(cx),
5454 "
5455 /* */
5456 /* */
5457 /
5458
5459 "
5460 .unindent()
5461 );
5462
5463 view.undo(&Undo, cx);
5464 view.select_display_ranges(
5465 &[
5466 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5467 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5468 ],
5469 cx,
5470 )
5471 .unwrap();
5472 view.handle_input(&Input("*".to_string()), cx);
5473 assert_eq!(
5474 view.text(cx),
5475 "
5476 a
5477
5478 /*
5479 *
5480 "
5481 .unindent()
5482 );
5483 });
5484 }
5485
5486 #[gpui::test]
5487 async fn test_toggle_comment(mut cx: gpui::TestAppContext) {
5488 let settings = cx.read(EditorSettings::test);
5489 let language = Some(Arc::new(Language::new(
5490 LanguageConfig {
5491 line_comment: Some("// ".to_string()),
5492 ..Default::default()
5493 },
5494 Some(tree_sitter_rust::language()),
5495 )));
5496
5497 let text = "
5498 fn a() {
5499 //b();
5500 // c();
5501 // d();
5502 }
5503 "
5504 .unindent();
5505
5506 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
5507 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
5508
5509 view.update(&mut cx, |editor, cx| {
5510 // If multiple selections intersect a line, the line is only
5511 // toggled once.
5512 editor
5513 .select_display_ranges(
5514 &[
5515 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
5516 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
5517 ],
5518 cx,
5519 )
5520 .unwrap();
5521 editor.toggle_comments(&ToggleComments, cx);
5522 assert_eq!(
5523 editor.text(cx),
5524 "
5525 fn a() {
5526 b();
5527 c();
5528 d();
5529 }
5530 "
5531 .unindent()
5532 );
5533
5534 // The comment prefix is inserted at the same column for every line
5535 // in a selection.
5536 editor
5537 .select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx)
5538 .unwrap();
5539 editor.toggle_comments(&ToggleComments, cx);
5540 assert_eq!(
5541 editor.text(cx),
5542 "
5543 fn a() {
5544 // b();
5545 // c();
5546 // d();
5547 }
5548 "
5549 .unindent()
5550 );
5551
5552 // If a selection ends at the beginning of a line, that line is not toggled.
5553 editor
5554 .select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx)
5555 .unwrap();
5556 editor.toggle_comments(&ToggleComments, cx);
5557 assert_eq!(
5558 editor.text(cx),
5559 "
5560 fn a() {
5561 // b();
5562 c();
5563 // d();
5564 }
5565 "
5566 .unindent()
5567 );
5568 });
5569 }
5570
5571 #[gpui::test]
5572 async fn test_extra_newline_insertion(mut cx: gpui::TestAppContext) {
5573 let settings = cx.read(EditorSettings::test);
5574 let language = Some(Arc::new(Language::new(
5575 LanguageConfig {
5576 brackets: vec![
5577 BracketPair {
5578 start: "{".to_string(),
5579 end: "}".to_string(),
5580 close: true,
5581 newline: true,
5582 },
5583 BracketPair {
5584 start: "/* ".to_string(),
5585 end: " */".to_string(),
5586 close: true,
5587 newline: true,
5588 },
5589 ],
5590 ..Default::default()
5591 },
5592 Some(tree_sitter_rust::language()),
5593 )));
5594
5595 let text = concat!(
5596 "{ }\n", // Suppress rustfmt
5597 " x\n", //
5598 " /* */\n", //
5599 "x\n", //
5600 "{{} }\n", //
5601 );
5602
5603 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
5604 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
5605 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing())
5606 .await;
5607
5608 view.update(&mut cx, |view, cx| {
5609 view.select_display_ranges(
5610 &[
5611 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
5612 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
5613 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
5614 ],
5615 cx,
5616 )
5617 .unwrap();
5618 view.newline(&Newline, cx);
5619
5620 assert_eq!(
5621 view.buffer().read(cx).text(),
5622 concat!(
5623 "{ \n", // Suppress rustfmt
5624 "\n", //
5625 "}\n", //
5626 " x\n", //
5627 " /* \n", //
5628 " \n", //
5629 " */\n", //
5630 "x\n", //
5631 "{{} \n", //
5632 "}\n", //
5633 )
5634 );
5635 });
5636 }
5637
5638 impl Editor {
5639 fn selection_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
5640 self.intersecting_selections(
5641 self.selection_set_id,
5642 DisplayPoint::zero()..self.max_point(cx),
5643 cx,
5644 )
5645 .into_iter()
5646 .map(|s| {
5647 if s.reversed {
5648 s.end..s.start
5649 } else {
5650 s.start..s.end
5651 }
5652 })
5653 .collect()
5654 }
5655 }
5656
5657 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
5658 let point = DisplayPoint::new(row as u32, column as u32);
5659 point..point
5660 }
5661
5662 fn build_editor(
5663 buffer: ModelHandle<Buffer>,
5664 settings: EditorSettings,
5665 cx: &mut ViewContext<Editor>,
5666 ) -> Editor {
5667 Editor::for_buffer(buffer, move |_| settings.clone(), cx)
5668 }
5669}
5670
5671trait RangeExt<T> {
5672 fn sorted(&self) -> Range<T>;
5673 fn to_inclusive(&self) -> RangeInclusive<T>;
5674}
5675
5676impl<T: Ord + Clone> RangeExt<T> for Range<T> {
5677 fn sorted(&self) -> Self {
5678 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
5679 }
5680
5681 fn to_inclusive(&self) -> RangeInclusive<T> {
5682 self.start.clone()..=self.end.clone()
5683 }
5684}