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::{
24 multi_buffer::{
25 Anchor, AnchorRangeExt, MultiBuffer, MultiBufferSnapshot, SelectionSet, ToOffset, ToPoint,
26 },
27 BracketPair, Buffer, Diagnostic, DiagnosticSeverity, Language, Point, Selection, SelectionGoal,
28 SelectionSetId,
29};
30use serde::{Deserialize, Serialize};
31use smallvec::SmallVec;
32use smol::Timer;
33use std::{
34 cell::RefCell,
35 cmp,
36 collections::HashMap,
37 iter, mem,
38 ops::{Deref, Range, RangeInclusive, Sub},
39 rc::Rc,
40 sync::Arc,
41 time::Duration,
42};
43use sum_tree::Bias;
44use text::rope::TextDimension;
45use theme::{DiagnosticStyle, EditorStyle};
46use util::post_inc;
47use workspace::{EntryOpener, Workspace};
48
49const CURSOR_BLINK_INTERVAL: Duration = Duration::from_millis(500);
50const MAX_LINE_LEN: usize = 1024;
51
52action!(Cancel);
53action!(Backspace);
54action!(Delete);
55action!(Input, String);
56action!(Newline);
57action!(Tab);
58action!(Outdent);
59action!(DeleteLine);
60action!(DeleteToPreviousWordBoundary);
61action!(DeleteToNextWordBoundary);
62action!(DeleteToBeginningOfLine);
63action!(DeleteToEndOfLine);
64action!(CutToEndOfLine);
65action!(DuplicateLine);
66action!(MoveLineUp);
67action!(MoveLineDown);
68action!(Cut);
69action!(Copy);
70action!(Paste);
71action!(Undo);
72action!(Redo);
73action!(MoveUp);
74action!(MoveDown);
75action!(MoveLeft);
76action!(MoveRight);
77action!(MoveToPreviousWordBoundary);
78action!(MoveToNextWordBoundary);
79action!(MoveToBeginningOfLine);
80action!(MoveToEndOfLine);
81action!(MoveToBeginning);
82action!(MoveToEnd);
83action!(SelectUp);
84action!(SelectDown);
85action!(SelectLeft);
86action!(SelectRight);
87action!(SelectToPreviousWordBoundary);
88action!(SelectToNextWordBoundary);
89action!(SelectToBeginningOfLine, bool);
90action!(SelectToEndOfLine);
91action!(SelectToBeginning);
92action!(SelectToEnd);
93action!(SelectAll);
94action!(SelectLine);
95action!(SplitSelectionIntoLines);
96action!(AddSelectionAbove);
97action!(AddSelectionBelow);
98action!(SelectNext, bool);
99action!(ToggleComments);
100action!(SelectLargerSyntaxNode);
101action!(SelectSmallerSyntaxNode);
102action!(MoveToEnclosingBracket);
103action!(ShowNextDiagnostic);
104action!(PageUp);
105action!(PageDown);
106action!(Fold);
107action!(Unfold);
108action!(FoldSelectedRanges);
109action!(Scroll, Vector2F);
110action!(Select, SelectPhase);
111
112pub fn init(cx: &mut MutableAppContext, entry_openers: &mut Vec<Box<dyn EntryOpener>>) {
113 entry_openers.push(Box::new(items::BufferOpener));
114 cx.add_bindings(vec![
115 Binding::new("escape", Cancel, Some("Editor")),
116 Binding::new("backspace", Backspace, Some("Editor")),
117 Binding::new("ctrl-h", Backspace, Some("Editor")),
118 Binding::new("delete", Delete, Some("Editor")),
119 Binding::new("ctrl-d", Delete, Some("Editor")),
120 Binding::new("enter", Newline, Some("Editor && mode == full")),
121 Binding::new(
122 "alt-enter",
123 Input("\n".into()),
124 Some("Editor && mode == auto_height"),
125 ),
126 Binding::new("tab", Tab, Some("Editor")),
127 Binding::new("shift-tab", Outdent, Some("Editor")),
128 Binding::new("ctrl-shift-K", DeleteLine, Some("Editor")),
129 Binding::new(
130 "alt-backspace",
131 DeleteToPreviousWordBoundary,
132 Some("Editor"),
133 ),
134 Binding::new("alt-h", DeleteToPreviousWordBoundary, Some("Editor")),
135 Binding::new("alt-delete", DeleteToNextWordBoundary, Some("Editor")),
136 Binding::new("alt-d", DeleteToNextWordBoundary, Some("Editor")),
137 Binding::new("cmd-backspace", DeleteToBeginningOfLine, Some("Editor")),
138 Binding::new("cmd-delete", DeleteToEndOfLine, Some("Editor")),
139 Binding::new("ctrl-k", CutToEndOfLine, Some("Editor")),
140 Binding::new("cmd-shift-D", DuplicateLine, Some("Editor")),
141 Binding::new("ctrl-cmd-up", MoveLineUp, Some("Editor")),
142 Binding::new("ctrl-cmd-down", MoveLineDown, Some("Editor")),
143 Binding::new("cmd-x", Cut, Some("Editor")),
144 Binding::new("cmd-c", Copy, Some("Editor")),
145 Binding::new("cmd-v", Paste, Some("Editor")),
146 Binding::new("cmd-z", Undo, Some("Editor")),
147 Binding::new("cmd-shift-Z", Redo, Some("Editor")),
148 Binding::new("up", MoveUp, Some("Editor")),
149 Binding::new("down", MoveDown, Some("Editor")),
150 Binding::new("left", MoveLeft, Some("Editor")),
151 Binding::new("right", MoveRight, Some("Editor")),
152 Binding::new("ctrl-p", MoveUp, Some("Editor")),
153 Binding::new("ctrl-n", MoveDown, Some("Editor")),
154 Binding::new("ctrl-b", MoveLeft, Some("Editor")),
155 Binding::new("ctrl-f", MoveRight, Some("Editor")),
156 Binding::new("alt-left", MoveToPreviousWordBoundary, Some("Editor")),
157 Binding::new("alt-b", MoveToPreviousWordBoundary, Some("Editor")),
158 Binding::new("alt-right", MoveToNextWordBoundary, Some("Editor")),
159 Binding::new("alt-f", MoveToNextWordBoundary, Some("Editor")),
160 Binding::new("cmd-left", MoveToBeginningOfLine, Some("Editor")),
161 Binding::new("ctrl-a", MoveToBeginningOfLine, Some("Editor")),
162 Binding::new("cmd-right", MoveToEndOfLine, Some("Editor")),
163 Binding::new("ctrl-e", MoveToEndOfLine, Some("Editor")),
164 Binding::new("cmd-up", MoveToBeginning, Some("Editor")),
165 Binding::new("cmd-down", MoveToEnd, Some("Editor")),
166 Binding::new("shift-up", SelectUp, Some("Editor")),
167 Binding::new("ctrl-shift-P", SelectUp, Some("Editor")),
168 Binding::new("shift-down", SelectDown, Some("Editor")),
169 Binding::new("ctrl-shift-N", SelectDown, Some("Editor")),
170 Binding::new("shift-left", SelectLeft, Some("Editor")),
171 Binding::new("ctrl-shift-B", SelectLeft, Some("Editor")),
172 Binding::new("shift-right", SelectRight, Some("Editor")),
173 Binding::new("ctrl-shift-F", SelectRight, Some("Editor")),
174 Binding::new(
175 "alt-shift-left",
176 SelectToPreviousWordBoundary,
177 Some("Editor"),
178 ),
179 Binding::new("alt-shift-B", SelectToPreviousWordBoundary, Some("Editor")),
180 Binding::new("alt-shift-right", SelectToNextWordBoundary, Some("Editor")),
181 Binding::new("alt-shift-F", SelectToNextWordBoundary, Some("Editor")),
182 Binding::new(
183 "cmd-shift-left",
184 SelectToBeginningOfLine(true),
185 Some("Editor"),
186 ),
187 Binding::new(
188 "ctrl-shift-A",
189 SelectToBeginningOfLine(true),
190 Some("Editor"),
191 ),
192 Binding::new("cmd-shift-right", SelectToEndOfLine, Some("Editor")),
193 Binding::new("ctrl-shift-E", SelectToEndOfLine, Some("Editor")),
194 Binding::new("cmd-shift-up", SelectToBeginning, Some("Editor")),
195 Binding::new("cmd-shift-down", SelectToEnd, Some("Editor")),
196 Binding::new("cmd-a", SelectAll, Some("Editor")),
197 Binding::new("cmd-l", SelectLine, Some("Editor")),
198 Binding::new("cmd-shift-L", SplitSelectionIntoLines, Some("Editor")),
199 Binding::new("cmd-alt-up", AddSelectionAbove, Some("Editor")),
200 Binding::new("cmd-ctrl-p", AddSelectionAbove, Some("Editor")),
201 Binding::new("cmd-alt-down", AddSelectionBelow, Some("Editor")),
202 Binding::new("cmd-ctrl-n", AddSelectionBelow, Some("Editor")),
203 Binding::new("cmd-d", SelectNext(false), Some("Editor")),
204 Binding::new("cmd-k cmd-d", SelectNext(true), Some("Editor")),
205 Binding::new("cmd-/", ToggleComments, Some("Editor")),
206 Binding::new("alt-up", SelectLargerSyntaxNode, Some("Editor")),
207 Binding::new("ctrl-w", SelectLargerSyntaxNode, Some("Editor")),
208 Binding::new("alt-down", SelectSmallerSyntaxNode, Some("Editor")),
209 Binding::new("ctrl-shift-W", SelectSmallerSyntaxNode, Some("Editor")),
210 Binding::new("f8", ShowNextDiagnostic, Some("Editor")),
211 Binding::new("ctrl-m", MoveToEnclosingBracket, Some("Editor")),
212 Binding::new("pageup", PageUp, Some("Editor")),
213 Binding::new("pagedown", PageDown, Some("Editor")),
214 Binding::new("alt-cmd-[", Fold, Some("Editor")),
215 Binding::new("alt-cmd-]", Unfold, Some("Editor")),
216 Binding::new("alt-cmd-f", FoldSelectedRanges, Some("Editor")),
217 ]);
218
219 cx.add_action(Editor::open_new);
220 cx.add_action(|this: &mut Editor, action: &Scroll, cx| this.set_scroll_position(action.0, cx));
221 cx.add_action(Editor::select);
222 cx.add_action(Editor::cancel);
223 cx.add_action(Editor::handle_input);
224 cx.add_action(Editor::newline);
225 cx.add_action(Editor::backspace);
226 cx.add_action(Editor::delete);
227 cx.add_action(Editor::tab);
228 cx.add_action(Editor::outdent);
229 cx.add_action(Editor::delete_line);
230 cx.add_action(Editor::delete_to_previous_word_boundary);
231 cx.add_action(Editor::delete_to_next_word_boundary);
232 cx.add_action(Editor::delete_to_beginning_of_line);
233 cx.add_action(Editor::delete_to_end_of_line);
234 cx.add_action(Editor::cut_to_end_of_line);
235 cx.add_action(Editor::duplicate_line);
236 cx.add_action(Editor::move_line_up);
237 cx.add_action(Editor::move_line_down);
238 cx.add_action(Editor::cut);
239 cx.add_action(Editor::copy);
240 cx.add_action(Editor::paste);
241 cx.add_action(Editor::undo);
242 cx.add_action(Editor::redo);
243 cx.add_action(Editor::move_up);
244 cx.add_action(Editor::move_down);
245 cx.add_action(Editor::move_left);
246 cx.add_action(Editor::move_right);
247 cx.add_action(Editor::move_to_previous_word_boundary);
248 cx.add_action(Editor::move_to_next_word_boundary);
249 cx.add_action(Editor::move_to_beginning_of_line);
250 cx.add_action(Editor::move_to_end_of_line);
251 cx.add_action(Editor::move_to_beginning);
252 cx.add_action(Editor::move_to_end);
253 cx.add_action(Editor::select_up);
254 cx.add_action(Editor::select_down);
255 cx.add_action(Editor::select_left);
256 cx.add_action(Editor::select_right);
257 cx.add_action(Editor::select_to_previous_word_boundary);
258 cx.add_action(Editor::select_to_next_word_boundary);
259 cx.add_action(Editor::select_to_beginning_of_line);
260 cx.add_action(Editor::select_to_end_of_line);
261 cx.add_action(Editor::select_to_beginning);
262 cx.add_action(Editor::select_to_end);
263 cx.add_action(Editor::select_all);
264 cx.add_action(Editor::select_line);
265 cx.add_action(Editor::split_selection_into_lines);
266 cx.add_action(Editor::add_selection_above);
267 cx.add_action(Editor::add_selection_below);
268 cx.add_action(Editor::select_next);
269 cx.add_action(Editor::toggle_comments);
270 cx.add_action(Editor::select_larger_syntax_node);
271 cx.add_action(Editor::select_smaller_syntax_node);
272 cx.add_action(Editor::move_to_enclosing_bracket);
273 cx.add_action(Editor::show_next_diagnostic);
274 cx.add_action(Editor::page_up);
275 cx.add_action(Editor::page_down);
276 cx.add_action(Editor::fold);
277 cx.add_action(Editor::unfold);
278 cx.add_action(Editor::fold_selected_ranges);
279}
280
281trait SelectionExt {
282 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize>;
283 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point>;
284 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint>;
285 fn spanned_rows(
286 &self,
287 include_end_if_at_line_start: bool,
288 map: &DisplaySnapshot,
289 ) -> SpannedRows;
290}
291
292struct SpannedRows {
293 buffer_rows: Range<u32>,
294 display_rows: Range<u32>,
295}
296
297#[derive(Clone, Debug)]
298pub enum SelectPhase {
299 Begin {
300 position: DisplayPoint,
301 add: bool,
302 click_count: usize,
303 },
304 BeginColumnar {
305 position: DisplayPoint,
306 overshoot: u32,
307 },
308 Extend {
309 position: DisplayPoint,
310 click_count: usize,
311 },
312 Update {
313 position: DisplayPoint,
314 overshoot: u32,
315 scroll_position: Vector2F,
316 },
317 End,
318}
319
320#[derive(Clone, Debug)]
321enum SelectMode {
322 Character,
323 Word(Range<Anchor>),
324 Line(Range<Anchor>),
325 All,
326}
327
328#[derive(PartialEq, Eq)]
329pub enum Autoscroll {
330 Fit,
331 Center,
332 Newest,
333}
334
335#[derive(Copy, Clone, PartialEq, Eq)]
336pub enum EditorMode {
337 SingleLine,
338 AutoHeight { max_lines: usize },
339 Full,
340}
341
342#[derive(Clone)]
343pub struct EditorSettings {
344 pub tab_size: usize,
345 pub soft_wrap: SoftWrap,
346 pub style: EditorStyle,
347}
348
349#[derive(Clone)]
350pub enum SoftWrap {
351 None,
352 EditorWidth,
353 Column(u32),
354}
355
356pub struct Editor {
357 handle: WeakViewHandle<Self>,
358 buffer: ModelHandle<MultiBuffer>,
359 display_map: ModelHandle<DisplayMap>,
360 selection_set_id: SelectionSetId,
361 pending_selection: Option<PendingSelection>,
362 columnar_selection_tail: Option<Anchor>,
363 next_selection_id: usize,
364 add_selections_state: Option<AddSelectionsState>,
365 select_next_state: Option<SelectNextState>,
366 autoclose_stack: Vec<BracketPairState>,
367 select_larger_syntax_node_stack: Vec<Box<[Selection<usize>]>>,
368 active_diagnostics: Option<ActiveDiagnosticGroup>,
369 scroll_position: Vector2F,
370 scroll_top_anchor: Anchor,
371 autoscroll_request: Option<Autoscroll>,
372 build_settings: Rc<RefCell<dyn Fn(&AppContext) -> EditorSettings>>,
373 focused: bool,
374 show_local_cursors: bool,
375 blink_epoch: usize,
376 blinking_paused: bool,
377 mode: EditorMode,
378 placeholder_text: Option<Arc<str>>,
379 highlighted_row: Option<u32>,
380}
381
382pub struct EditorSnapshot {
383 pub mode: EditorMode,
384 pub display_snapshot: DisplaySnapshot,
385 pub placeholder_text: Option<Arc<str>>,
386 is_focused: bool,
387 scroll_position: Vector2F,
388 scroll_top_anchor: Anchor,
389}
390
391struct PendingSelection {
392 selection: Selection<Anchor>,
393 mode: SelectMode,
394}
395
396struct AddSelectionsState {
397 above: bool,
398 stack: Vec<usize>,
399}
400
401struct SelectNextState {
402 query: AhoCorasick,
403 wordwise: bool,
404 done: bool,
405}
406
407#[derive(Debug)]
408struct BracketPairState {
409 ranges: Vec<Range<Anchor>>,
410 pair: BracketPair,
411}
412
413#[derive(Debug)]
414struct ActiveDiagnosticGroup {
415 primary_range: Range<Anchor>,
416 primary_message: String,
417 blocks: HashMap<BlockId, Diagnostic>,
418 is_valid: bool,
419}
420
421#[derive(Serialize, Deserialize)]
422struct ClipboardSelection {
423 len: usize,
424 is_entire_line: bool,
425}
426
427impl Editor {
428 pub fn single_line(
429 build_settings: impl 'static + Fn(&AppContext) -> EditorSettings,
430 cx: &mut ViewContext<Self>,
431 ) -> Self {
432 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
433 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
434 let mut view = Self::for_buffer(buffer, build_settings, cx);
435 view.mode = EditorMode::SingleLine;
436 view
437 }
438
439 pub fn auto_height(
440 max_lines: usize,
441 build_settings: impl 'static + Fn(&AppContext) -> EditorSettings,
442 cx: &mut ViewContext<Self>,
443 ) -> Self {
444 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
445 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
446 let mut view = Self::for_buffer(buffer, build_settings, cx);
447 view.mode = EditorMode::AutoHeight { max_lines };
448 view
449 }
450
451 pub fn for_buffer(
452 buffer: ModelHandle<MultiBuffer>,
453 build_settings: impl 'static + Fn(&AppContext) -> EditorSettings,
454 cx: &mut ViewContext<Self>,
455 ) -> Self {
456 Self::new(buffer, Rc::new(RefCell::new(build_settings)), cx)
457 }
458
459 pub fn clone(&self, cx: &mut ViewContext<Self>) -> Self {
460 let mut clone = Self::new(self.buffer.clone(), self.build_settings.clone(), cx);
461 clone.scroll_position = self.scroll_position;
462 clone.scroll_top_anchor = self.scroll_top_anchor.clone();
463 clone
464 }
465
466 pub fn new(
467 buffer: ModelHandle<MultiBuffer>,
468 build_settings: Rc<RefCell<dyn Fn(&AppContext) -> EditorSettings>>,
469 cx: &mut ViewContext<Self>,
470 ) -> Self {
471 let settings = build_settings.borrow_mut()(cx);
472 let display_map = cx.add_model(|cx| {
473 DisplayMap::new(
474 buffer.clone(),
475 settings.tab_size,
476 settings.style.text.font_id,
477 settings.style.text.font_size,
478 None,
479 cx,
480 )
481 });
482 cx.observe(&buffer, Self::on_buffer_changed).detach();
483 cx.subscribe(&buffer, Self::on_buffer_event).detach();
484 cx.observe(&display_map, Self::on_display_map_changed)
485 .detach();
486
487 let mut next_selection_id = 0;
488 let selection_set_id = buffer.update(cx, |buffer, cx| {
489 buffer.add_selection_set(
490 &[Selection {
491 id: post_inc(&mut next_selection_id),
492 start: 0,
493 end: 0,
494 reversed: false,
495 goal: SelectionGoal::None,
496 }],
497 cx,
498 )
499 });
500 Self {
501 handle: cx.weak_handle(),
502 buffer,
503 display_map,
504 selection_set_id,
505 pending_selection: None,
506 columnar_selection_tail: None,
507 next_selection_id,
508 add_selections_state: None,
509 select_next_state: None,
510 autoclose_stack: Default::default(),
511 select_larger_syntax_node_stack: Vec::new(),
512 active_diagnostics: None,
513 build_settings,
514 scroll_position: Vector2F::zero(),
515 scroll_top_anchor: Anchor::min(),
516 autoscroll_request: None,
517 focused: false,
518 show_local_cursors: false,
519 blink_epoch: 0,
520 blinking_paused: false,
521 mode: EditorMode::Full,
522 placeholder_text: None,
523 highlighted_row: None,
524 }
525 }
526
527 pub fn open_new(
528 workspace: &mut Workspace,
529 _: &workspace::OpenNew,
530 cx: &mut ViewContext<Workspace>,
531 ) {
532 let buffer = cx.add_model(|cx| {
533 Buffer::new(0, "", cx).with_language(Some(language::PLAIN_TEXT.clone()), None, cx)
534 });
535 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
536 workspace.add_item(BufferItemHandle(buffer), cx);
537 }
538
539 pub fn replica_id(&self, cx: &AppContext) -> ReplicaId {
540 self.buffer.read(cx).replica_id()
541 }
542
543 pub fn buffer(&self) -> &ModelHandle<MultiBuffer> {
544 &self.buffer
545 }
546
547 pub fn snapshot(&mut self, cx: &mut MutableAppContext) -> EditorSnapshot {
548 EditorSnapshot {
549 mode: self.mode,
550 display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
551 scroll_position: self.scroll_position,
552 scroll_top_anchor: self.scroll_top_anchor.clone(),
553 placeholder_text: self.placeholder_text.clone(),
554 is_focused: self
555 .handle
556 .upgrade(cx)
557 .map_or(false, |handle| handle.is_focused(cx)),
558 }
559 }
560
561 pub fn language<'a>(&self, cx: &'a AppContext) -> Option<&'a Arc<Language>> {
562 self.buffer.read(cx).language()
563 }
564
565 pub fn set_placeholder_text(
566 &mut self,
567 placeholder_text: impl Into<Arc<str>>,
568 cx: &mut ViewContext<Self>,
569 ) {
570 self.placeholder_text = Some(placeholder_text.into());
571 cx.notify();
572 }
573
574 pub fn set_scroll_position(&mut self, scroll_position: Vector2F, cx: &mut ViewContext<Self>) {
575 let map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
576 let scroll_top_buffer_offset =
577 DisplayPoint::new(scroll_position.y() as u32, 0).to_offset(&map, Bias::Right);
578 self.scroll_top_anchor = self
579 .buffer
580 .read(cx)
581 .anchor_at(scroll_top_buffer_offset, Bias::Right);
582 self.scroll_position = vec2f(
583 scroll_position.x(),
584 scroll_position.y() - self.scroll_top_anchor.to_display_point(&map).row() as f32,
585 );
586
587 debug_assert_eq!(
588 compute_scroll_position(&map, self.scroll_position, &self.scroll_top_anchor),
589 scroll_position
590 );
591
592 cx.notify();
593 }
594
595 pub fn scroll_position(&self, cx: &mut ViewContext<Self>) -> Vector2F {
596 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
597 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor)
598 }
599
600 pub fn clamp_scroll_left(&mut self, max: f32) -> bool {
601 if max < self.scroll_position.x() {
602 self.scroll_position.set_x(max);
603 true
604 } else {
605 false
606 }
607 }
608
609 pub fn autoscroll_vertically(
610 &mut self,
611 viewport_height: f32,
612 line_height: f32,
613 cx: &mut ViewContext<Self>,
614 ) -> bool {
615 let visible_lines = viewport_height / line_height;
616 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
617 let mut scroll_position =
618 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor);
619 let max_scroll_top = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
620 (display_map.max_point().row() as f32 - visible_lines + 1.).max(0.)
621 } else {
622 display_map.max_point().row().saturating_sub(1) as f32
623 };
624 if scroll_position.y() > max_scroll_top {
625 scroll_position.set_y(max_scroll_top);
626 self.set_scroll_position(scroll_position, cx);
627 }
628
629 let autoscroll = if let Some(autoscroll) = self.autoscroll_request.take() {
630 autoscroll
631 } else {
632 return false;
633 };
634
635 let first_cursor_top;
636 let last_cursor_bottom;
637 if autoscroll == Autoscroll::Newest {
638 let newest_selection = self.newest_selection::<Point>(cx);
639 first_cursor_top = newest_selection.head().to_display_point(&display_map).row() as f32;
640 last_cursor_bottom = first_cursor_top + 1.;
641 } else {
642 let selections = self.selections::<Point>(cx);
643 first_cursor_top = selections
644 .first()
645 .unwrap()
646 .head()
647 .to_display_point(&display_map)
648 .row() as f32;
649 last_cursor_bottom = selections
650 .last()
651 .unwrap()
652 .head()
653 .to_display_point(&display_map)
654 .row() as f32
655 + 1.0;
656 }
657
658 let margin = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
659 0.
660 } else {
661 ((visible_lines - (last_cursor_bottom - first_cursor_top)) / 2.0).floor()
662 };
663 if margin < 0.0 {
664 return false;
665 }
666
667 match autoscroll {
668 Autoscroll::Fit | Autoscroll::Newest => {
669 let margin = margin.min(3.0);
670 let target_top = (first_cursor_top - margin).max(0.0);
671 let target_bottom = last_cursor_bottom + margin;
672 let start_row = scroll_position.y();
673 let end_row = start_row + visible_lines;
674
675 if target_top < start_row {
676 scroll_position.set_y(target_top);
677 self.set_scroll_position(scroll_position, cx);
678 } else if target_bottom >= end_row {
679 scroll_position.set_y(target_bottom - visible_lines);
680 self.set_scroll_position(scroll_position, cx);
681 }
682 }
683 Autoscroll::Center => {
684 scroll_position.set_y((first_cursor_top - margin).max(0.0));
685 self.set_scroll_position(scroll_position, cx);
686 }
687 }
688
689 true
690 }
691
692 pub fn autoscroll_horizontally(
693 &mut self,
694 start_row: u32,
695 viewport_width: f32,
696 scroll_width: f32,
697 max_glyph_width: f32,
698 layouts: &[text_layout::Line],
699 cx: &mut ViewContext<Self>,
700 ) -> bool {
701 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
702 let selections = self.selections::<Point>(cx);
703 let mut target_left = std::f32::INFINITY;
704 let mut target_right = 0.0_f32;
705 for selection in selections {
706 let head = selection.head().to_display_point(&display_map);
707 if head.row() >= start_row && head.row() < start_row + layouts.len() as u32 {
708 let start_column = head.column().saturating_sub(3);
709 let end_column = cmp::min(display_map.line_len(head.row()), head.column() + 3);
710 target_left = target_left.min(
711 layouts[(head.row() - start_row) as usize].x_for_index(start_column as usize),
712 );
713 target_right = target_right.max(
714 layouts[(head.row() - start_row) as usize].x_for_index(end_column as usize)
715 + max_glyph_width,
716 );
717 }
718 }
719 target_right = target_right.min(scroll_width);
720
721 if target_right - target_left > viewport_width {
722 return false;
723 }
724
725 let scroll_left = self.scroll_position.x() * max_glyph_width;
726 let scroll_right = scroll_left + viewport_width;
727
728 if target_left < scroll_left {
729 self.scroll_position.set_x(target_left / max_glyph_width);
730 true
731 } else if target_right > scroll_right {
732 self.scroll_position
733 .set_x((target_right - viewport_width) / max_glyph_width);
734 true
735 } else {
736 false
737 }
738 }
739
740 fn select(&mut self, Select(phase): &Select, cx: &mut ViewContext<Self>) {
741 match phase {
742 SelectPhase::Begin {
743 position,
744 add,
745 click_count,
746 } => self.begin_selection(*position, *add, *click_count, cx),
747 SelectPhase::BeginColumnar {
748 position,
749 overshoot,
750 } => self.begin_columnar_selection(*position, *overshoot, cx),
751 SelectPhase::Extend {
752 position,
753 click_count,
754 } => self.extend_selection(*position, *click_count, cx),
755 SelectPhase::Update {
756 position,
757 overshoot,
758 scroll_position,
759 } => self.update_selection(*position, *overshoot, *scroll_position, cx),
760 SelectPhase::End => self.end_selection(cx),
761 }
762 }
763
764 fn extend_selection(
765 &mut self,
766 position: DisplayPoint,
767 click_count: usize,
768 cx: &mut ViewContext<Self>,
769 ) {
770 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
771 let tail = self.newest_selection::<usize>(cx).tail();
772 self.begin_selection(position, false, click_count, cx);
773
774 let buffer = self.buffer.read(cx);
775 let position = position.to_offset(&display_map, Bias::Left);
776 let tail_anchor = buffer.anchor_before(tail);
777 let pending = self.pending_selection.as_mut().unwrap();
778
779 if position >= tail {
780 pending.selection.start = tail_anchor.clone();
781 } else {
782 pending.selection.end = tail_anchor.clone();
783 pending.selection.reversed = true;
784 }
785
786 match &mut pending.mode {
787 SelectMode::Word(range) | SelectMode::Line(range) => {
788 *range = tail_anchor.clone()..tail_anchor
789 }
790 _ => {}
791 }
792 }
793
794 fn begin_selection(
795 &mut self,
796 position: DisplayPoint,
797 add: bool,
798 click_count: usize,
799 cx: &mut ViewContext<Self>,
800 ) {
801 if !self.focused {
802 cx.focus_self();
803 cx.emit(Event::Activate);
804 }
805
806 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
807 let buffer = self.buffer.read(cx);
808 let start;
809 let end;
810 let mode;
811 match click_count {
812 1 => {
813 start = buffer.anchor_before(position.to_point(&display_map));
814 end = start.clone();
815 mode = SelectMode::Character;
816 }
817 2 => {
818 let range = movement::surrounding_word(&display_map, position);
819 start = buffer.anchor_before(range.start.to_point(&display_map));
820 end = buffer.anchor_before(range.end.to_point(&display_map));
821 mode = SelectMode::Word(start.clone()..end.clone());
822 }
823 3 => {
824 let position = display_map.clip_point(position, Bias::Left);
825 let line_start = movement::line_beginning(&display_map, position, false);
826 let mut next_line_start = line_start.clone();
827 *next_line_start.row_mut() += 1;
828 *next_line_start.column_mut() = 0;
829 next_line_start = display_map.clip_point(next_line_start, Bias::Right);
830
831 start = buffer.anchor_before(line_start.to_point(&display_map));
832 end = buffer.anchor_before(next_line_start.to_point(&display_map));
833 mode = SelectMode::Line(start.clone()..end.clone());
834 }
835 _ => {
836 start = buffer.anchor_before(0);
837 end = buffer.anchor_before(buffer.len());
838 mode = SelectMode::All;
839 }
840 }
841
842 let selection = Selection {
843 id: post_inc(&mut self.next_selection_id),
844 start,
845 end,
846 reversed: false,
847 goal: SelectionGoal::None,
848 };
849
850 if !add {
851 self.update_selections::<usize>(Vec::new(), None, cx);
852 } else if click_count > 1 {
853 // Remove the newest selection since it was only added as part of this multi-click.
854 let newest_selection = self.newest_selection::<usize>(cx);
855 let mut selections = self.selections(cx);
856 selections.retain(|selection| selection.id != newest_selection.id);
857 self.update_selections::<usize>(selections, None, cx)
858 }
859
860 self.pending_selection = Some(PendingSelection { selection, mode });
861
862 cx.notify();
863 }
864
865 fn begin_columnar_selection(
866 &mut self,
867 position: DisplayPoint,
868 overshoot: u32,
869 cx: &mut ViewContext<Self>,
870 ) {
871 if !self.focused {
872 cx.focus_self();
873 cx.emit(Event::Activate);
874 }
875
876 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
877 let buffer = self.buffer.read(cx);
878
879 let tail = self.newest_selection::<Point>(cx).tail();
880 self.columnar_selection_tail = Some(buffer.anchor_before(tail));
881
882 self.select_columns(
883 tail.to_display_point(&display_map),
884 position,
885 overshoot,
886 &display_map,
887 cx,
888 );
889 }
890
891 fn update_selection(
892 &mut self,
893 position: DisplayPoint,
894 overshoot: u32,
895 scroll_position: Vector2F,
896 cx: &mut ViewContext<Self>,
897 ) {
898 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
899
900 if let Some(tail) = self.columnar_selection_tail.as_ref() {
901 let tail = tail.to_display_point(&display_map);
902 self.select_columns(tail, position, overshoot, &display_map, cx);
903 } else if let Some(PendingSelection { selection, mode }) = self.pending_selection.as_mut() {
904 let buffer = self.buffer.read(cx).snapshot(cx);
905 let head;
906 let tail;
907 match mode {
908 SelectMode::Character => {
909 head = position.to_point(&display_map);
910 tail = selection.tail().to_point(&buffer);
911 }
912 SelectMode::Word(original_range) => {
913 let original_display_range = original_range.start.to_display_point(&display_map)
914 ..original_range.end.to_display_point(&display_map);
915 let original_buffer_range = original_display_range.start.to_point(&display_map)
916 ..original_display_range.end.to_point(&display_map);
917 if movement::is_inside_word(&display_map, position)
918 || original_display_range.contains(&position)
919 {
920 let word_range = movement::surrounding_word(&display_map, position);
921 if word_range.start < original_display_range.start {
922 head = word_range.start.to_point(&display_map);
923 } else {
924 head = word_range.end.to_point(&display_map);
925 }
926 } else {
927 head = position.to_point(&display_map);
928 }
929
930 if head <= original_buffer_range.start {
931 tail = original_buffer_range.end;
932 } else {
933 tail = original_buffer_range.start;
934 }
935 }
936 SelectMode::Line(original_range) => {
937 let original_display_range = original_range.start.to_display_point(&display_map)
938 ..original_range.end.to_display_point(&display_map);
939 let original_buffer_range = original_display_range.start.to_point(&display_map)
940 ..original_display_range.end.to_point(&display_map);
941 let line_start = movement::line_beginning(&display_map, position, false);
942 let mut next_line_start = line_start.clone();
943 *next_line_start.row_mut() += 1;
944 *next_line_start.column_mut() = 0;
945 next_line_start = display_map.clip_point(next_line_start, Bias::Right);
946
947 if line_start < original_display_range.start {
948 head = line_start.to_point(&display_map);
949 } else {
950 head = next_line_start.to_point(&display_map);
951 }
952
953 if head <= original_buffer_range.start {
954 tail = original_buffer_range.end;
955 } else {
956 tail = original_buffer_range.start;
957 }
958 }
959 SelectMode::All => {
960 return;
961 }
962 };
963
964 if head < tail {
965 selection.start = buffer.anchor_before(head);
966 selection.end = buffer.anchor_before(tail);
967 selection.reversed = true;
968 } else {
969 selection.start = buffer.anchor_before(tail);
970 selection.end = buffer.anchor_before(head);
971 selection.reversed = false;
972 }
973 } else {
974 log::error!("update_selection dispatched with no pending selection");
975 return;
976 }
977
978 self.set_scroll_position(scroll_position, cx);
979 cx.notify();
980 }
981
982 fn end_selection(&mut self, cx: &mut ViewContext<Self>) {
983 self.columnar_selection_tail.take();
984 if self.pending_selection.is_some() {
985 let selections = self.selections::<usize>(cx);
986 self.update_selections(selections, None, cx);
987 }
988 }
989
990 fn select_columns(
991 &mut self,
992 tail: DisplayPoint,
993 head: DisplayPoint,
994 overshoot: u32,
995 display_map: &DisplaySnapshot,
996 cx: &mut ViewContext<Self>,
997 ) {
998 let start_row = cmp::min(tail.row(), head.row());
999 let end_row = cmp::max(tail.row(), head.row());
1000 let start_column = cmp::min(tail.column(), head.column() + overshoot);
1001 let end_column = cmp::max(tail.column(), head.column() + overshoot);
1002 let reversed = start_column < tail.column();
1003
1004 let selections = (start_row..=end_row)
1005 .filter_map(|row| {
1006 if start_column <= display_map.line_len(row) && !display_map.is_block_line(row) {
1007 let start = display_map
1008 .clip_point(DisplayPoint::new(row, start_column), Bias::Left)
1009 .to_point(&display_map);
1010 let end = display_map
1011 .clip_point(DisplayPoint::new(row, end_column), Bias::Right)
1012 .to_point(&display_map);
1013 Some(Selection {
1014 id: post_inc(&mut self.next_selection_id),
1015 start,
1016 end,
1017 reversed,
1018 goal: SelectionGoal::None,
1019 })
1020 } else {
1021 None
1022 }
1023 })
1024 .collect::<Vec<_>>();
1025
1026 self.update_selections(selections, None, cx);
1027 cx.notify();
1028 }
1029
1030 pub fn is_selecting(&self) -> bool {
1031 self.pending_selection.is_some() || self.columnar_selection_tail.is_some()
1032 }
1033
1034 pub fn cancel(&mut self, _: &Cancel, cx: &mut ViewContext<Self>) {
1035 if self.active_diagnostics.is_some() {
1036 self.dismiss_diagnostics(cx);
1037 } else if let Some(PendingSelection { selection, .. }) = self.pending_selection.take() {
1038 let buffer = self.buffer.read(cx).snapshot(cx);
1039 let selection = Selection {
1040 id: selection.id,
1041 start: selection.start.to_point(&buffer),
1042 end: selection.end.to_point(&buffer),
1043 reversed: selection.reversed,
1044 goal: selection.goal,
1045 };
1046 if self.selections::<Point>(cx).is_empty() {
1047 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
1048 }
1049 } else {
1050 let buffer = self.buffer.read(cx).snapshot(cx);
1051 let mut oldest_selection = self.oldest_selection::<usize>(&buffer, cx);
1052 if self.selection_count(cx) == 1 {
1053 oldest_selection.start = oldest_selection.head().clone();
1054 oldest_selection.end = oldest_selection.head().clone();
1055 }
1056 self.update_selections(vec![oldest_selection], Some(Autoscroll::Fit), cx);
1057 }
1058 }
1059
1060 pub fn select_ranges<I, T>(
1061 &mut self,
1062 ranges: I,
1063 autoscroll: Option<Autoscroll>,
1064 cx: &mut ViewContext<Self>,
1065 ) where
1066 I: IntoIterator<Item = Range<T>>,
1067 T: ToOffset,
1068 {
1069 let buffer = self.buffer.read(cx).snapshot(cx);
1070 let selections = ranges
1071 .into_iter()
1072 .map(|range| {
1073 let mut start = range.start.to_offset(&buffer);
1074 let mut end = range.end.to_offset(&buffer);
1075 let reversed = if start > end {
1076 mem::swap(&mut start, &mut end);
1077 true
1078 } else {
1079 false
1080 };
1081 Selection {
1082 id: post_inc(&mut self.next_selection_id),
1083 start,
1084 end,
1085 reversed,
1086 goal: SelectionGoal::None,
1087 }
1088 })
1089 .collect();
1090 self.update_selections(selections, autoscroll, cx);
1091 }
1092
1093 #[cfg(test)]
1094 fn select_display_ranges<'a, T>(
1095 &mut self,
1096 ranges: T,
1097 cx: &mut ViewContext<Self>,
1098 ) -> anyhow::Result<()>
1099 where
1100 T: IntoIterator<Item = &'a Range<DisplayPoint>>,
1101 {
1102 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1103 let selections = ranges
1104 .into_iter()
1105 .map(|range| {
1106 let mut start = range.start;
1107 let mut end = range.end;
1108 let reversed = if start > end {
1109 mem::swap(&mut start, &mut end);
1110 true
1111 } else {
1112 false
1113 };
1114 Selection {
1115 id: post_inc(&mut self.next_selection_id),
1116 start: start.to_point(&display_map),
1117 end: end.to_point(&display_map),
1118 reversed,
1119 goal: SelectionGoal::None,
1120 }
1121 })
1122 .collect();
1123 self.update_selections(selections, None, cx);
1124 Ok(())
1125 }
1126
1127 pub fn handle_input(&mut self, action: &Input, cx: &mut ViewContext<Self>) {
1128 let text = action.0.as_ref();
1129 if !self.skip_autoclose_end(text, cx) {
1130 self.start_transaction(cx);
1131 self.insert(text, cx);
1132 self.autoclose_pairs(cx);
1133 self.end_transaction(cx);
1134 }
1135 }
1136
1137 pub fn newline(&mut self, _: &Newline, cx: &mut ViewContext<Self>) {
1138 self.start_transaction(cx);
1139 let mut old_selections = SmallVec::<[_; 32]>::new();
1140 {
1141 let selections = self.selections::<Point>(cx);
1142 let buffer = self.buffer.read(cx).snapshot(cx);
1143 for selection in selections.iter() {
1144 let start_point = selection.start;
1145 let indent = buffer
1146 .indent_column_for_line(start_point.row)
1147 .min(start_point.column);
1148 let start = selection.start.to_offset(&buffer);
1149 let end = selection.end.to_offset(&buffer);
1150
1151 let mut insert_extra_newline = false;
1152 if let Some(language) = buffer.language() {
1153 let leading_whitespace_len = buffer
1154 .reversed_chars_at(start)
1155 .take_while(|c| c.is_whitespace() && *c != '\n')
1156 .map(|c| c.len_utf8())
1157 .sum::<usize>();
1158
1159 let trailing_whitespace_len = buffer
1160 .chars_at(end)
1161 .take_while(|c| c.is_whitespace() && *c != '\n')
1162 .map(|c| c.len_utf8())
1163 .sum::<usize>();
1164
1165 insert_extra_newline = language.brackets().iter().any(|pair| {
1166 let pair_start = pair.start.trim_end();
1167 let pair_end = pair.end.trim_start();
1168
1169 pair.newline
1170 && buffer.contains_str_at(end + trailing_whitespace_len, pair_end)
1171 && buffer.contains_str_at(
1172 (start - leading_whitespace_len).saturating_sub(pair_start.len()),
1173 pair_start,
1174 )
1175 });
1176 }
1177
1178 old_selections.push((selection.id, start..end, indent, insert_extra_newline));
1179 }
1180 }
1181
1182 let mut new_selections = Vec::with_capacity(old_selections.len());
1183 self.buffer.update(cx, |buffer, cx| {
1184 let mut delta = 0_isize;
1185 let mut pending_edit: Option<PendingEdit> = None;
1186 for (_, range, indent, insert_extra_newline) in &old_selections {
1187 if pending_edit.as_ref().map_or(false, |pending| {
1188 pending.indent != *indent
1189 || pending.insert_extra_newline != *insert_extra_newline
1190 }) {
1191 let pending = pending_edit.take().unwrap();
1192 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1193 new_text.push('\n');
1194 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1195 if pending.insert_extra_newline {
1196 new_text = new_text.repeat(2);
1197 }
1198 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1199 delta += pending.delta;
1200 }
1201
1202 let start = (range.start as isize + delta) as usize;
1203 let end = (range.end as isize + delta) as usize;
1204 let mut text_len = *indent as usize + 1;
1205 if *insert_extra_newline {
1206 text_len *= 2;
1207 }
1208
1209 let pending = pending_edit.get_or_insert_with(Default::default);
1210 pending.delta += text_len as isize - (end - start) as isize;
1211 pending.indent = *indent;
1212 pending.insert_extra_newline = *insert_extra_newline;
1213 pending.ranges.push(start..end);
1214 }
1215
1216 let pending = pending_edit.unwrap();
1217 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1218 new_text.push('\n');
1219 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1220 if pending.insert_extra_newline {
1221 new_text = new_text.repeat(2);
1222 }
1223 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1224
1225 let mut delta = 0_isize;
1226 new_selections.extend(old_selections.into_iter().map(
1227 |(id, range, indent, insert_extra_newline)| {
1228 let start = (range.start as isize + delta) as usize;
1229 let end = (range.end as isize + delta) as usize;
1230 let text_before_cursor_len = indent as usize + 1;
1231 let cursor = start + text_before_cursor_len;
1232 let text_len = if insert_extra_newline {
1233 text_before_cursor_len * 2
1234 } else {
1235 text_before_cursor_len
1236 };
1237 delta += text_len as isize - (end - start) as isize;
1238 Selection {
1239 id,
1240 start: cursor,
1241 end: cursor,
1242 reversed: false,
1243 goal: SelectionGoal::None,
1244 }
1245 },
1246 ))
1247 });
1248
1249 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1250 self.end_transaction(cx);
1251
1252 #[derive(Default)]
1253 struct PendingEdit {
1254 indent: u32,
1255 insert_extra_newline: bool,
1256 delta: isize,
1257 ranges: SmallVec<[Range<usize>; 32]>,
1258 }
1259 }
1260
1261 fn insert(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1262 self.start_transaction(cx);
1263 let old_selections = self.selections::<usize>(cx);
1264 let mut new_selections = Vec::new();
1265 self.buffer.update(cx, |buffer, cx| {
1266 let edit_ranges = old_selections.iter().map(|s| s.start..s.end);
1267 buffer.edit_with_autoindent(edit_ranges, text, cx);
1268 let text_len = text.len() as isize;
1269 let mut delta = 0_isize;
1270 new_selections = old_selections
1271 .into_iter()
1272 .map(|selection| {
1273 let start = selection.start as isize;
1274 let end = selection.end as isize;
1275 let cursor = (start + delta + text_len) as usize;
1276 let deleted_count = end - start;
1277 delta += text_len - deleted_count;
1278 Selection {
1279 id: selection.id,
1280 start: cursor,
1281 end: cursor,
1282 reversed: false,
1283 goal: SelectionGoal::None,
1284 }
1285 })
1286 .collect();
1287 });
1288
1289 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1290 self.end_transaction(cx);
1291 }
1292
1293 fn autoclose_pairs(&mut self, cx: &mut ViewContext<Self>) {
1294 let selections = self.selections::<usize>(cx);
1295 let new_autoclose_pair = self.buffer.update(cx, |buffer, cx| {
1296 let autoclose_pair = buffer.language().and_then(|language| {
1297 let first_selection_start = selections.first().unwrap().start;
1298 let pair = language.brackets().iter().find(|pair| {
1299 buffer.contains_str_at(
1300 first_selection_start.saturating_sub(pair.start.len()),
1301 &pair.start,
1302 )
1303 });
1304 pair.and_then(|pair| {
1305 let should_autoclose = selections[1..].iter().all(|selection| {
1306 buffer.contains_str_at(
1307 selection.start.saturating_sub(pair.start.len()),
1308 &pair.start,
1309 )
1310 });
1311
1312 if should_autoclose {
1313 Some(pair.clone())
1314 } else {
1315 None
1316 }
1317 })
1318 });
1319
1320 autoclose_pair.and_then(|pair| {
1321 let selection_ranges = selections
1322 .iter()
1323 .map(|selection| {
1324 let start = selection.start.to_offset(buffer);
1325 start..start
1326 })
1327 .collect::<SmallVec<[_; 32]>>();
1328
1329 buffer.edit(selection_ranges, &pair.end, cx);
1330
1331 if pair.end.len() == 1 {
1332 let mut delta = 0;
1333 Some(BracketPairState {
1334 ranges: selections
1335 .iter()
1336 .map(move |selection| {
1337 let offset = selection.start + delta;
1338 delta += 1;
1339 buffer.anchor_before(offset)..buffer.anchor_after(offset)
1340 })
1341 .collect(),
1342 pair,
1343 })
1344 } else {
1345 None
1346 }
1347 })
1348 });
1349 self.autoclose_stack.extend(new_autoclose_pair);
1350 }
1351
1352 fn skip_autoclose_end(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
1353 let old_selections = self.selections::<usize>(cx).collect::<Vec<_>>();
1354 let autoclose_pair = if let Some(autoclose_pair) = self.autoclose_stack.last() {
1355 autoclose_pair
1356 } else {
1357 return false;
1358 };
1359 if text != autoclose_pair.pair.end {
1360 return false;
1361 }
1362
1363 debug_assert_eq!(old_selections.len(), autoclose_pair.ranges.len());
1364
1365 let buffer = self.buffer.read(cx).snapshot(cx);
1366 if old_selections
1367 .iter()
1368 .zip(autoclose_pair.ranges.iter().map(|r| r.to_offset(&buffer)))
1369 .all(|(selection, autoclose_range)| {
1370 let autoclose_range_end = autoclose_range.end.to_offset(&buffer);
1371 selection.is_empty() && selection.start == autoclose_range_end
1372 })
1373 {
1374 let new_selections = old_selections
1375 .into_iter()
1376 .map(|selection| {
1377 let cursor = selection.start + 1;
1378 Selection {
1379 id: selection.id,
1380 start: cursor,
1381 end: cursor,
1382 reversed: false,
1383 goal: SelectionGoal::None,
1384 }
1385 })
1386 .collect();
1387 self.autoclose_stack.pop();
1388 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1389 true
1390 } else {
1391 false
1392 }
1393 }
1394
1395 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
1396 self.start_transaction(cx);
1397 self.select_all(&SelectAll, cx);
1398 self.insert("", cx);
1399 self.end_transaction(cx);
1400 }
1401
1402 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
1403 self.start_transaction(cx);
1404 let mut selections = self.selections::<Point>(cx);
1405 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1406 for selection in &mut selections {
1407 if selection.is_empty() {
1408 let head = selection.head().to_display_point(&display_map);
1409 let cursor = movement::left(&display_map, head)
1410 .unwrap()
1411 .to_point(&display_map);
1412 selection.set_head(cursor);
1413 selection.goal = SelectionGoal::None;
1414 }
1415 }
1416 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1417 self.insert("", cx);
1418 self.end_transaction(cx);
1419 }
1420
1421 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
1422 self.start_transaction(cx);
1423 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1424 let mut selections = self.selections::<Point>(cx);
1425 for selection in &mut selections {
1426 if selection.is_empty() {
1427 let head = selection.head().to_display_point(&display_map);
1428 let cursor = movement::right(&display_map, head)
1429 .unwrap()
1430 .to_point(&display_map);
1431 selection.set_head(cursor);
1432 selection.goal = SelectionGoal::None;
1433 }
1434 }
1435 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1436 self.insert(&"", cx);
1437 self.end_transaction(cx);
1438 }
1439
1440 pub fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
1441 self.start_transaction(cx);
1442 let tab_size = self.build_settings.borrow()(cx).tab_size;
1443 let mut selections = self.selections::<Point>(cx);
1444 let mut last_indent = None;
1445 self.buffer.update(cx, |buffer, cx| {
1446 for selection in &mut selections {
1447 if selection.is_empty() {
1448 let char_column = buffer
1449 .as_snapshot()
1450 .text_for_range(Point::new(selection.start.row, 0)..selection.start)
1451 .flat_map(str::chars)
1452 .count();
1453 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
1454 buffer.edit(
1455 [selection.start..selection.start],
1456 " ".repeat(chars_to_next_tab_stop),
1457 cx,
1458 );
1459 selection.start.column += chars_to_next_tab_stop as u32;
1460 selection.end = selection.start;
1461 } else {
1462 let mut start_row = selection.start.row;
1463 let mut end_row = selection.end.row + 1;
1464
1465 // If a selection ends at the beginning of a line, don't indent
1466 // that last line.
1467 if selection.end.column == 0 {
1468 end_row -= 1;
1469 }
1470
1471 // Avoid re-indenting a row that has already been indented by a
1472 // previous selection, but still update this selection's column
1473 // to reflect that indentation.
1474 if let Some((last_indent_row, last_indent_len)) = last_indent {
1475 if last_indent_row == selection.start.row {
1476 selection.start.column += last_indent_len;
1477 start_row += 1;
1478 }
1479 if last_indent_row == selection.end.row {
1480 selection.end.column += last_indent_len;
1481 }
1482 }
1483
1484 for row in start_row..end_row {
1485 let indent_column = buffer.indent_column_for_line(row) as usize;
1486 let columns_to_next_tab_stop = tab_size - (indent_column % tab_size);
1487 let row_start = Point::new(row, 0);
1488 buffer.edit(
1489 [row_start..row_start],
1490 " ".repeat(columns_to_next_tab_stop),
1491 cx,
1492 );
1493
1494 // Update this selection's endpoints to reflect the indentation.
1495 if row == selection.start.row {
1496 selection.start.column += columns_to_next_tab_stop as u32;
1497 }
1498 if row == selection.end.row {
1499 selection.end.column += columns_to_next_tab_stop as u32;
1500 }
1501
1502 last_indent = Some((row, columns_to_next_tab_stop as u32));
1503 }
1504 }
1505 }
1506 });
1507
1508 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1509 self.end_transaction(cx);
1510 }
1511
1512 pub fn outdent(&mut self, _: &Outdent, cx: &mut ViewContext<Self>) {
1513 self.start_transaction(cx);
1514 let tab_size = self.build_settings.borrow()(cx).tab_size;
1515 let selections = self.selections::<Point>(cx);
1516 let mut deletion_ranges = Vec::new();
1517 let mut last_outdent = None;
1518 self.buffer.update(cx, |buffer, cx| {
1519 for selection in &selections {
1520 let mut start_row = selection.start.row;
1521 let mut end_row = selection.end.row + 1;
1522
1523 // If a selection ends at the beginning of a line, don't indent
1524 // that last line.
1525 if selection.end.column == 0 {
1526 end_row -= 1;
1527 }
1528
1529 // Avoid re-outdenting a row that has already been outdented by a
1530 // previous selection.
1531 if let Some(last_row) = last_outdent {
1532 if last_row == selection.start.row {
1533 start_row += 1;
1534 }
1535 }
1536
1537 for row in start_row..end_row {
1538 let column = buffer.indent_column_for_line(row) as usize;
1539 if column > 0 {
1540 let mut deletion_len = (column % tab_size) as u32;
1541 if deletion_len == 0 {
1542 deletion_len = tab_size as u32;
1543 }
1544 deletion_ranges.push(Point::new(row, 0)..Point::new(row, deletion_len));
1545 last_outdent = Some(row);
1546 }
1547 }
1548 }
1549 buffer.edit(deletion_ranges, "", cx);
1550 });
1551
1552 self.update_selections(self.selections::<usize>(cx), Some(Autoscroll::Fit), cx);
1553 self.end_transaction(cx);
1554 }
1555
1556 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
1557 self.start_transaction(cx);
1558
1559 let selections = self.selections::<Point>(cx);
1560 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1561 let buffer = self.buffer.read(cx).snapshot(cx);
1562
1563 let mut row_delta = 0;
1564 let mut new_cursors = Vec::new();
1565 let mut edit_ranges = Vec::new();
1566 let mut selections = selections.iter().peekable();
1567 while let Some(selection) = selections.next() {
1568 let mut rows = selection.spanned_rows(false, &display_map).buffer_rows;
1569 let goal_display_column = selection.head().to_display_point(&display_map).column();
1570
1571 // Accumulate contiguous regions of rows that we want to delete.
1572 while let Some(next_selection) = selections.peek() {
1573 let next_rows = next_selection.spanned_rows(false, &display_map).buffer_rows;
1574 if next_rows.start <= rows.end {
1575 rows.end = next_rows.end;
1576 selections.next().unwrap();
1577 } else {
1578 break;
1579 }
1580 }
1581
1582 let mut edit_start = Point::new(rows.start, 0).to_offset(&buffer);
1583 let edit_end;
1584 let cursor_buffer_row;
1585 if buffer.max_point().row >= rows.end {
1586 // If there's a line after the range, delete the \n from the end of the row range
1587 // and position the cursor on the next line.
1588 edit_end = Point::new(rows.end, 0).to_offset(&buffer);
1589 cursor_buffer_row = rows.start;
1590 } else {
1591 // If there isn't a line after the range, delete the \n from the line before the
1592 // start of the row range and position the cursor there.
1593 edit_start = edit_start.saturating_sub(1);
1594 edit_end = buffer.len();
1595 cursor_buffer_row = rows.start.saturating_sub(1);
1596 }
1597
1598 let mut cursor =
1599 Point::new(cursor_buffer_row - row_delta, 0).to_display_point(&display_map);
1600 *cursor.column_mut() =
1601 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
1602 row_delta += rows.len() as u32;
1603
1604 new_cursors.push((selection.id, cursor.to_point(&display_map)));
1605 edit_ranges.push(edit_start..edit_end);
1606 }
1607
1608 new_cursors.sort_unstable_by_key(|(_, point)| point.clone());
1609 let new_selections = new_cursors
1610 .into_iter()
1611 .map(|(id, cursor)| Selection {
1612 id,
1613 start: cursor,
1614 end: cursor,
1615 reversed: false,
1616 goal: SelectionGoal::None,
1617 })
1618 .collect();
1619 self.buffer
1620 .update(cx, |buffer, cx| buffer.edit(edit_ranges, "", cx));
1621 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1622 self.end_transaction(cx);
1623 }
1624
1625 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
1626 self.start_transaction(cx);
1627
1628 let mut selections = self.selections::<Point>(cx);
1629 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1630 let buffer = self.buffer.read(cx);
1631
1632 let mut edits = Vec::new();
1633 let mut selections_iter = selections.iter().peekable();
1634 while let Some(selection) = selections_iter.next() {
1635 // Avoid duplicating the same lines twice.
1636 let mut rows = selection.spanned_rows(false, &display_map).buffer_rows;
1637
1638 while let Some(next_selection) = selections_iter.peek() {
1639 let next_rows = next_selection.spanned_rows(false, &display_map).buffer_rows;
1640 if next_rows.start <= rows.end - 1 {
1641 rows.end = next_rows.end;
1642 selections_iter.next().unwrap();
1643 } else {
1644 break;
1645 }
1646 }
1647
1648 // Copy the text from the selected row region and splice it at the start of the region.
1649 let start = Point::new(rows.start, 0);
1650 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
1651 let text = buffer
1652 .text_for_range(start..end)
1653 .chain(Some("\n"))
1654 .collect::<String>();
1655 edits.push((start, text, rows.len() as u32));
1656 }
1657
1658 let mut edits_iter = edits.iter().peekable();
1659 let mut row_delta = 0;
1660 for selection in selections.iter_mut() {
1661 while let Some((point, _, line_count)) = edits_iter.peek() {
1662 if *point <= selection.start {
1663 row_delta += line_count;
1664 edits_iter.next();
1665 } else {
1666 break;
1667 }
1668 }
1669 selection.start.row += row_delta;
1670 selection.end.row += row_delta;
1671 }
1672
1673 self.buffer.update(cx, |buffer, cx| {
1674 for (point, text, _) in edits.into_iter().rev() {
1675 buffer.edit(Some(point..point), text, cx);
1676 }
1677 });
1678
1679 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1680 self.end_transaction(cx);
1681 }
1682
1683 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
1684 self.start_transaction(cx);
1685
1686 let selections = self.selections::<Point>(cx);
1687 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1688 let buffer = self.buffer.read(cx).snapshot(cx);
1689
1690 let mut edits = Vec::new();
1691 let mut new_selection_ranges = Vec::new();
1692 let mut old_folds = Vec::new();
1693 let mut new_folds = Vec::new();
1694
1695 let mut selections = selections.iter().peekable();
1696 let mut contiguous_selections = Vec::new();
1697 while let Some(selection) = selections.next() {
1698 // Accumulate contiguous regions of rows that we want to move.
1699 contiguous_selections.push(selection.point_range(&buffer));
1700 let SpannedRows {
1701 mut buffer_rows,
1702 mut display_rows,
1703 } = selection.spanned_rows(false, &display_map);
1704
1705 while let Some(next_selection) = selections.peek() {
1706 let SpannedRows {
1707 buffer_rows: next_buffer_rows,
1708 display_rows: next_display_rows,
1709 } = next_selection.spanned_rows(false, &display_map);
1710 if next_buffer_rows.start <= buffer_rows.end {
1711 buffer_rows.end = next_buffer_rows.end;
1712 display_rows.end = next_display_rows.end;
1713 contiguous_selections.push(next_selection.point_range(&buffer));
1714 selections.next().unwrap();
1715 } else {
1716 break;
1717 }
1718 }
1719
1720 // Cut the text from the selected rows and paste it at the start of the previous line.
1721 if display_rows.start != 0 {
1722 let start = Point::new(buffer_rows.start, 0).to_offset(&buffer);
1723 let end = Point::new(buffer_rows.end - 1, buffer.line_len(buffer_rows.end - 1))
1724 .to_offset(&buffer);
1725
1726 let prev_row_display_start = DisplayPoint::new(display_rows.start - 1, 0);
1727 let prev_row_buffer_start = display_map.prev_row_boundary(prev_row_display_start).1;
1728 let prev_row_buffer_start_offset = prev_row_buffer_start.to_offset(&buffer);
1729
1730 let mut text = String::new();
1731 text.extend(buffer.text_for_range(start..end));
1732 text.push('\n');
1733 edits.push((
1734 prev_row_buffer_start_offset..prev_row_buffer_start_offset,
1735 text,
1736 ));
1737 edits.push((start - 1..end, String::new()));
1738
1739 let row_delta = buffer_rows.start - prev_row_buffer_start.row;
1740
1741 // Move selections up.
1742 for range in &mut contiguous_selections {
1743 range.start.row -= row_delta;
1744 range.end.row -= row_delta;
1745 }
1746
1747 // Move folds up.
1748 old_folds.push(start..end);
1749 for fold in display_map.folds_in_range(start..end) {
1750 let mut start = fold.start.to_point(&buffer);
1751 let mut end = fold.end.to_point(&buffer);
1752 start.row -= row_delta;
1753 end.row -= row_delta;
1754 new_folds.push(start..end);
1755 }
1756 }
1757
1758 new_selection_ranges.extend(contiguous_selections.drain(..));
1759 }
1760
1761 self.unfold_ranges(old_folds, cx);
1762 self.buffer.update(cx, |buffer, cx| {
1763 for (range, text) in edits.into_iter().rev() {
1764 buffer.edit(Some(range), text, cx);
1765 }
1766 });
1767 self.fold_ranges(new_folds, cx);
1768 self.select_ranges(new_selection_ranges, Some(Autoscroll::Fit), cx);
1769
1770 self.end_transaction(cx);
1771 }
1772
1773 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
1774 self.start_transaction(cx);
1775
1776 let selections = self.selections::<Point>(cx);
1777 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1778 let buffer = self.buffer.read(cx).snapshot(cx);
1779
1780 let mut edits = Vec::new();
1781 let mut new_selection_ranges = Vec::new();
1782 let mut old_folds = Vec::new();
1783 let mut new_folds = Vec::new();
1784
1785 let mut selections = selections.iter().peekable();
1786 let mut contiguous_selections = Vec::new();
1787 while let Some(selection) = selections.next() {
1788 // Accumulate contiguous regions of rows that we want to move.
1789 contiguous_selections.push(selection.point_range(&buffer));
1790 let SpannedRows {
1791 mut buffer_rows,
1792 mut display_rows,
1793 } = selection.spanned_rows(false, &display_map);
1794 while let Some(next_selection) = selections.peek() {
1795 let SpannedRows {
1796 buffer_rows: next_buffer_rows,
1797 display_rows: next_display_rows,
1798 } = next_selection.spanned_rows(false, &display_map);
1799 if next_buffer_rows.start <= buffer_rows.end {
1800 buffer_rows.end = next_buffer_rows.end;
1801 display_rows.end = next_display_rows.end;
1802 contiguous_selections.push(next_selection.point_range(&buffer));
1803 selections.next().unwrap();
1804 } else {
1805 break;
1806 }
1807 }
1808
1809 // Cut the text from the selected rows and paste it at the end of the next line.
1810 if display_rows.end <= display_map.max_point().row() {
1811 let start = Point::new(buffer_rows.start, 0).to_offset(&buffer);
1812 let end = Point::new(buffer_rows.end - 1, buffer.line_len(buffer_rows.end - 1))
1813 .to_offset(&buffer);
1814
1815 let next_row_display_end =
1816 DisplayPoint::new(display_rows.end, display_map.line_len(display_rows.end));
1817 let next_row_buffer_end = display_map.next_row_boundary(next_row_display_end).1;
1818 let next_row_buffer_end_offset = next_row_buffer_end.to_offset(&buffer);
1819
1820 let mut text = String::new();
1821 text.push('\n');
1822 text.extend(buffer.text_for_range(start..end));
1823 edits.push((start..end + 1, String::new()));
1824 edits.push((next_row_buffer_end_offset..next_row_buffer_end_offset, text));
1825
1826 let row_delta = next_row_buffer_end.row - buffer_rows.end + 1;
1827
1828 // Move selections down.
1829 for range in &mut contiguous_selections {
1830 range.start.row += row_delta;
1831 range.end.row += row_delta;
1832 }
1833
1834 // Move folds down.
1835 old_folds.push(start..end);
1836 for fold in display_map.folds_in_range(start..end) {
1837 let mut start = fold.start.to_point(&buffer);
1838 let mut end = fold.end.to_point(&buffer);
1839 start.row += row_delta;
1840 end.row += row_delta;
1841 new_folds.push(start..end);
1842 }
1843 }
1844
1845 new_selection_ranges.extend(contiguous_selections.drain(..));
1846 }
1847
1848 self.unfold_ranges(old_folds, cx);
1849 self.buffer.update(cx, |buffer, cx| {
1850 for (range, text) in edits.into_iter().rev() {
1851 buffer.edit(Some(range), text, cx);
1852 }
1853 });
1854 self.fold_ranges(new_folds, cx);
1855 self.select_ranges(new_selection_ranges, Some(Autoscroll::Fit), cx);
1856
1857 self.end_transaction(cx);
1858 }
1859
1860 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
1861 self.start_transaction(cx);
1862 let mut text = String::new();
1863 let mut selections = self.selections::<Point>(cx);
1864 let mut clipboard_selections = Vec::with_capacity(selections.len());
1865 {
1866 let buffer = self.buffer.read(cx);
1867 let max_point = buffer.max_point();
1868 for selection in &mut selections {
1869 let is_entire_line = selection.is_empty();
1870 if is_entire_line {
1871 selection.start = Point::new(selection.start.row, 0);
1872 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
1873 }
1874 let mut len = 0;
1875 for chunk in buffer.text_for_range(selection.start..selection.end) {
1876 text.push_str(chunk);
1877 len += chunk.len();
1878 }
1879 clipboard_selections.push(ClipboardSelection {
1880 len,
1881 is_entire_line,
1882 });
1883 }
1884 }
1885 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1886 self.insert("", cx);
1887 self.end_transaction(cx);
1888
1889 cx.as_mut()
1890 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
1891 }
1892
1893 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
1894 let selections = self.selections::<Point>(cx);
1895 let buffer = self.buffer.read(cx);
1896 let max_point = buffer.max_point();
1897 let mut text = String::new();
1898 let mut clipboard_selections = Vec::with_capacity(selections.len());
1899 for selection in selections.iter() {
1900 let mut start = selection.start;
1901 let mut end = selection.end;
1902 let is_entire_line = selection.is_empty();
1903 if is_entire_line {
1904 start = Point::new(start.row, 0);
1905 end = cmp::min(max_point, Point::new(start.row + 1, 0));
1906 }
1907 let mut len = 0;
1908 for chunk in buffer.text_for_range(start..end) {
1909 text.push_str(chunk);
1910 len += chunk.len();
1911 }
1912 clipboard_selections.push(ClipboardSelection {
1913 len,
1914 is_entire_line,
1915 });
1916 }
1917
1918 cx.as_mut()
1919 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
1920 }
1921
1922 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
1923 if let Some(item) = cx.as_mut().read_from_clipboard() {
1924 let clipboard_text = item.text();
1925 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
1926 let mut selections = self.selections::<usize>(cx);
1927 let all_selections_were_entire_line =
1928 clipboard_selections.iter().all(|s| s.is_entire_line);
1929 if clipboard_selections.len() != selections.len() {
1930 clipboard_selections.clear();
1931 }
1932
1933 let mut delta = 0_isize;
1934 let mut start_offset = 0;
1935 for (i, selection) in selections.iter_mut().enumerate() {
1936 let to_insert;
1937 let entire_line;
1938 if let Some(clipboard_selection) = clipboard_selections.get(i) {
1939 let end_offset = start_offset + clipboard_selection.len;
1940 to_insert = &clipboard_text[start_offset..end_offset];
1941 entire_line = clipboard_selection.is_entire_line;
1942 start_offset = end_offset
1943 } else {
1944 to_insert = clipboard_text.as_str();
1945 entire_line = all_selections_were_entire_line;
1946 }
1947
1948 selection.start = (selection.start as isize + delta) as usize;
1949 selection.end = (selection.end as isize + delta) as usize;
1950
1951 self.buffer.update(cx, |buffer, cx| {
1952 // If the corresponding selection was empty when this slice of the
1953 // clipboard text was written, then the entire line containing the
1954 // selection was copied. If this selection is also currently empty,
1955 // then paste the line before the current line of the buffer.
1956 let range = if selection.is_empty() && entire_line {
1957 let column =
1958 selection.start.to_point(&*buffer.as_snapshot()).column as usize;
1959 let line_start = selection.start - column;
1960 line_start..line_start
1961 } else {
1962 selection.start..selection.end
1963 };
1964
1965 delta += to_insert.len() as isize - range.len() as isize;
1966 buffer.edit([range], to_insert, cx);
1967 selection.start += to_insert.len();
1968 selection.end = selection.start;
1969 });
1970 }
1971 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1972 } else {
1973 self.insert(clipboard_text, cx);
1974 }
1975 }
1976 }
1977
1978 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
1979 self.buffer.update(cx, |buffer, cx| buffer.undo(cx));
1980 self.request_autoscroll(Autoscroll::Fit, cx);
1981 }
1982
1983 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
1984 self.buffer.update(cx, |buffer, cx| buffer.redo(cx));
1985 self.request_autoscroll(Autoscroll::Fit, cx);
1986 }
1987
1988 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
1989 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1990 let mut selections = self.selections::<Point>(cx);
1991 for selection in &mut selections {
1992 let start = selection.start.to_display_point(&display_map);
1993 let end = selection.end.to_display_point(&display_map);
1994
1995 if start != end {
1996 selection.end = selection.start.clone();
1997 } else {
1998 let cursor = movement::left(&display_map, start)
1999 .unwrap()
2000 .to_point(&display_map);
2001 selection.start = cursor.clone();
2002 selection.end = cursor;
2003 }
2004 selection.reversed = false;
2005 selection.goal = SelectionGoal::None;
2006 }
2007 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2008 }
2009
2010 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
2011 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2012 let mut selections = self.selections::<Point>(cx);
2013 for selection in &mut selections {
2014 let head = selection.head().to_display_point(&display_map);
2015 let cursor = movement::left(&display_map, head)
2016 .unwrap()
2017 .to_point(&display_map);
2018 selection.set_head(cursor);
2019 selection.goal = SelectionGoal::None;
2020 }
2021 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2022 }
2023
2024 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
2025 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2026 let mut selections = self.selections::<Point>(cx);
2027 for selection in &mut selections {
2028 let start = selection.start.to_display_point(&display_map);
2029 let end = selection.end.to_display_point(&display_map);
2030
2031 if start != end {
2032 selection.start = selection.end.clone();
2033 } else {
2034 let cursor = movement::right(&display_map, end)
2035 .unwrap()
2036 .to_point(&display_map);
2037 selection.start = cursor;
2038 selection.end = cursor;
2039 }
2040 selection.reversed = false;
2041 selection.goal = SelectionGoal::None;
2042 }
2043 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2044 }
2045
2046 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
2047 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2048 let mut selections = self.selections::<Point>(cx);
2049 for selection in &mut selections {
2050 let head = selection.head().to_display_point(&display_map);
2051 let cursor = movement::right(&display_map, head)
2052 .unwrap()
2053 .to_point(&display_map);
2054 selection.set_head(cursor);
2055 selection.goal = SelectionGoal::None;
2056 }
2057 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2058 }
2059
2060 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
2061 if matches!(self.mode, EditorMode::SingleLine) {
2062 cx.propagate_action();
2063 return;
2064 }
2065
2066 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2067 let mut selections = self.selections::<Point>(cx);
2068 for selection in &mut selections {
2069 let start = selection.start.to_display_point(&display_map);
2070 let end = selection.end.to_display_point(&display_map);
2071 if start != end {
2072 selection.goal = SelectionGoal::None;
2073 }
2074
2075 let (start, goal) = movement::up(&display_map, start, selection.goal).unwrap();
2076 let cursor = start.to_point(&display_map);
2077 selection.start = cursor;
2078 selection.end = cursor;
2079 selection.goal = goal;
2080 selection.reversed = false;
2081 }
2082 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2083 }
2084
2085 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
2086 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2087 let mut selections = self.selections::<Point>(cx);
2088 for selection in &mut selections {
2089 let head = selection.head().to_display_point(&display_map);
2090 let (head, goal) = movement::up(&display_map, head, selection.goal).unwrap();
2091 let cursor = head.to_point(&display_map);
2092 selection.set_head(cursor);
2093 selection.goal = goal;
2094 }
2095 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2096 }
2097
2098 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
2099 if matches!(self.mode, EditorMode::SingleLine) {
2100 cx.propagate_action();
2101 return;
2102 }
2103
2104 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2105 let mut selections = self.selections::<Point>(cx);
2106 for selection in &mut selections {
2107 let start = selection.start.to_display_point(&display_map);
2108 let end = selection.end.to_display_point(&display_map);
2109 if start != end {
2110 selection.goal = SelectionGoal::None;
2111 }
2112
2113 let (start, goal) = movement::down(&display_map, end, selection.goal).unwrap();
2114 let cursor = start.to_point(&display_map);
2115 selection.start = cursor;
2116 selection.end = cursor;
2117 selection.goal = goal;
2118 selection.reversed = false;
2119 }
2120 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2121 }
2122
2123 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
2124 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2125 let mut selections = self.selections::<Point>(cx);
2126 for selection in &mut selections {
2127 let head = selection.head().to_display_point(&display_map);
2128 let (head, goal) = movement::down(&display_map, head, selection.goal).unwrap();
2129 let cursor = head.to_point(&display_map);
2130 selection.set_head(cursor);
2131 selection.goal = goal;
2132 }
2133 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2134 }
2135
2136 pub fn move_to_previous_word_boundary(
2137 &mut self,
2138 _: &MoveToPreviousWordBoundary,
2139 cx: &mut ViewContext<Self>,
2140 ) {
2141 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2142 let mut selections = self.selections::<Point>(cx);
2143 for selection in &mut selections {
2144 let head = selection.head().to_display_point(&display_map);
2145 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2146 selection.start = cursor.clone();
2147 selection.end = cursor;
2148 selection.reversed = false;
2149 selection.goal = SelectionGoal::None;
2150 }
2151 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2152 }
2153
2154 pub fn select_to_previous_word_boundary(
2155 &mut self,
2156 _: &SelectToPreviousWordBoundary,
2157 cx: &mut ViewContext<Self>,
2158 ) {
2159 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2160 let mut selections = self.selections::<Point>(cx);
2161 for selection in &mut selections {
2162 let head = selection.head().to_display_point(&display_map);
2163 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2164 selection.set_head(cursor);
2165 selection.goal = SelectionGoal::None;
2166 }
2167 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2168 }
2169
2170 pub fn delete_to_previous_word_boundary(
2171 &mut self,
2172 _: &DeleteToPreviousWordBoundary,
2173 cx: &mut ViewContext<Self>,
2174 ) {
2175 self.start_transaction(cx);
2176 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2177 let mut selections = self.selections::<Point>(cx);
2178 for selection in &mut selections {
2179 if selection.is_empty() {
2180 let head = selection.head().to_display_point(&display_map);
2181 let cursor =
2182 movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2183 selection.set_head(cursor);
2184 selection.goal = SelectionGoal::None;
2185 }
2186 }
2187 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2188 self.insert("", cx);
2189 self.end_transaction(cx);
2190 }
2191
2192 pub fn move_to_next_word_boundary(
2193 &mut self,
2194 _: &MoveToNextWordBoundary,
2195 cx: &mut ViewContext<Self>,
2196 ) {
2197 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2198 let mut selections = self.selections::<Point>(cx);
2199 for selection in &mut selections {
2200 let head = selection.head().to_display_point(&display_map);
2201 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
2202 selection.start = cursor;
2203 selection.end = cursor;
2204 selection.reversed = false;
2205 selection.goal = SelectionGoal::None;
2206 }
2207 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2208 }
2209
2210 pub fn select_to_next_word_boundary(
2211 &mut self,
2212 _: &SelectToNextWordBoundary,
2213 cx: &mut ViewContext<Self>,
2214 ) {
2215 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2216 let mut selections = self.selections::<Point>(cx);
2217 for selection in &mut selections {
2218 let head = selection.head().to_display_point(&display_map);
2219 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
2220 selection.set_head(cursor);
2221 selection.goal = SelectionGoal::None;
2222 }
2223 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2224 }
2225
2226 pub fn delete_to_next_word_boundary(
2227 &mut self,
2228 _: &DeleteToNextWordBoundary,
2229 cx: &mut ViewContext<Self>,
2230 ) {
2231 self.start_transaction(cx);
2232 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2233 let mut selections = self.selections::<Point>(cx);
2234 for selection in &mut selections {
2235 if selection.is_empty() {
2236 let head = selection.head().to_display_point(&display_map);
2237 let cursor =
2238 movement::next_word_boundary(&display_map, head).to_point(&display_map);
2239 selection.set_head(cursor);
2240 selection.goal = SelectionGoal::None;
2241 }
2242 }
2243 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2244 self.insert("", cx);
2245 self.end_transaction(cx);
2246 }
2247
2248 pub fn move_to_beginning_of_line(
2249 &mut self,
2250 _: &MoveToBeginningOfLine,
2251 cx: &mut ViewContext<Self>,
2252 ) {
2253 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2254 let mut selections = self.selections::<Point>(cx);
2255 for selection in &mut selections {
2256 let head = selection.head().to_display_point(&display_map);
2257 let new_head = movement::line_beginning(&display_map, head, true);
2258 let cursor = new_head.to_point(&display_map);
2259 selection.start = cursor;
2260 selection.end = cursor;
2261 selection.reversed = false;
2262 selection.goal = SelectionGoal::None;
2263 }
2264 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2265 }
2266
2267 pub fn select_to_beginning_of_line(
2268 &mut self,
2269 SelectToBeginningOfLine(toggle_indent): &SelectToBeginningOfLine,
2270 cx: &mut ViewContext<Self>,
2271 ) {
2272 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2273 let mut selections = self.selections::<Point>(cx);
2274 for selection in &mut selections {
2275 let head = selection.head().to_display_point(&display_map);
2276 let new_head = movement::line_beginning(&display_map, head, *toggle_indent);
2277 selection.set_head(new_head.to_point(&display_map));
2278 selection.goal = SelectionGoal::None;
2279 }
2280 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2281 }
2282
2283 pub fn delete_to_beginning_of_line(
2284 &mut self,
2285 _: &DeleteToBeginningOfLine,
2286 cx: &mut ViewContext<Self>,
2287 ) {
2288 self.start_transaction(cx);
2289 self.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
2290 self.backspace(&Backspace, cx);
2291 self.end_transaction(cx);
2292 }
2293
2294 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
2295 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2296 let mut selections = self.selections::<Point>(cx);
2297 {
2298 for selection in &mut selections {
2299 let head = selection.head().to_display_point(&display_map);
2300 let new_head = movement::line_end(&display_map, head);
2301 let anchor = new_head.to_point(&display_map);
2302 selection.start = anchor.clone();
2303 selection.end = anchor;
2304 selection.reversed = false;
2305 selection.goal = SelectionGoal::None;
2306 }
2307 }
2308 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2309 }
2310
2311 pub fn select_to_end_of_line(&mut self, _: &SelectToEndOfLine, cx: &mut ViewContext<Self>) {
2312 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2313 let mut selections = self.selections::<Point>(cx);
2314 for selection in &mut selections {
2315 let head = selection.head().to_display_point(&display_map);
2316 let new_head = movement::line_end(&display_map, head);
2317 selection.set_head(new_head.to_point(&display_map));
2318 selection.goal = SelectionGoal::None;
2319 }
2320 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2321 }
2322
2323 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
2324 self.start_transaction(cx);
2325 self.select_to_end_of_line(&SelectToEndOfLine, cx);
2326 self.delete(&Delete, cx);
2327 self.end_transaction(cx);
2328 }
2329
2330 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
2331 self.start_transaction(cx);
2332 self.select_to_end_of_line(&SelectToEndOfLine, cx);
2333 self.cut(&Cut, cx);
2334 self.end_transaction(cx);
2335 }
2336
2337 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
2338 let selection = Selection {
2339 id: post_inc(&mut self.next_selection_id),
2340 start: 0,
2341 end: 0,
2342 reversed: false,
2343 goal: SelectionGoal::None,
2344 };
2345 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2346 }
2347
2348 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
2349 let mut selection = self.selections::<Point>(cx).last().unwrap().clone();
2350 selection.set_head(Point::zero());
2351 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2352 }
2353
2354 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
2355 let buffer = self.buffer.read(cx);
2356 let cursor = buffer.len();
2357 let selection = Selection {
2358 id: post_inc(&mut self.next_selection_id),
2359 start: cursor,
2360 end: cursor,
2361 reversed: false,
2362 goal: SelectionGoal::None,
2363 };
2364 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2365 }
2366
2367 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
2368 let mut selection = self.selections::<usize>(cx).last().unwrap().clone();
2369 selection.set_head(self.buffer.read(cx).len());
2370 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2371 }
2372
2373 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
2374 let selection = Selection {
2375 id: post_inc(&mut self.next_selection_id),
2376 start: 0,
2377 end: self.buffer.read(cx).len(),
2378 reversed: false,
2379 goal: SelectionGoal::None,
2380 };
2381 self.update_selections(vec![selection], None, cx);
2382 }
2383
2384 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
2385 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2386 let mut selections = self.selections::<Point>(cx);
2387 let buffer = self.buffer.read(cx);
2388 let max_point = buffer.max_point();
2389 for selection in &mut selections {
2390 let rows = selection.spanned_rows(true, &display_map).buffer_rows;
2391 selection.start = Point::new(rows.start, 0);
2392 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
2393 selection.reversed = false;
2394 }
2395 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2396 }
2397
2398 pub fn split_selection_into_lines(
2399 &mut self,
2400 _: &SplitSelectionIntoLines,
2401 cx: &mut ViewContext<Self>,
2402 ) {
2403 let selections = self.selections::<Point>(cx);
2404 let buffer = self.buffer.read(cx);
2405
2406 let mut to_unfold = Vec::new();
2407 let mut new_selections = Vec::new();
2408 for selection in selections.iter() {
2409 for row in selection.start.row..selection.end.row {
2410 let cursor = Point::new(row, buffer.line_len(row));
2411 new_selections.push(Selection {
2412 id: post_inc(&mut self.next_selection_id),
2413 start: cursor,
2414 end: cursor,
2415 reversed: false,
2416 goal: SelectionGoal::None,
2417 });
2418 }
2419 new_selections.push(Selection {
2420 id: selection.id,
2421 start: selection.end,
2422 end: selection.end,
2423 reversed: false,
2424 goal: SelectionGoal::None,
2425 });
2426 to_unfold.push(selection.start..selection.end);
2427 }
2428 self.unfold_ranges(to_unfold, cx);
2429 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2430 }
2431
2432 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
2433 self.add_selection(true, cx);
2434 }
2435
2436 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
2437 self.add_selection(false, cx);
2438 }
2439
2440 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
2441 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2442 let mut selections = self.selections::<Point>(cx);
2443 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
2444 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
2445 let range = oldest_selection.display_range(&display_map).sorted();
2446 let columns = cmp::min(range.start.column(), range.end.column())
2447 ..cmp::max(range.start.column(), range.end.column());
2448
2449 selections.clear();
2450 let mut stack = Vec::new();
2451 for row in range.start.row()..=range.end.row() {
2452 if let Some(selection) = self.build_columnar_selection(
2453 &display_map,
2454 row,
2455 &columns,
2456 oldest_selection.reversed,
2457 ) {
2458 stack.push(selection.id);
2459 selections.push(selection);
2460 }
2461 }
2462
2463 if above {
2464 stack.reverse();
2465 }
2466
2467 AddSelectionsState { above, stack }
2468 });
2469
2470 let last_added_selection = *state.stack.last().unwrap();
2471 let mut new_selections = Vec::new();
2472 if above == state.above {
2473 let end_row = if above {
2474 0
2475 } else {
2476 display_map.max_point().row()
2477 };
2478
2479 'outer: for selection in selections {
2480 if selection.id == last_added_selection {
2481 let range = selection.display_range(&display_map).sorted();
2482 debug_assert_eq!(range.start.row(), range.end.row());
2483 let mut row = range.start.row();
2484 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
2485 {
2486 start..end
2487 } else {
2488 cmp::min(range.start.column(), range.end.column())
2489 ..cmp::max(range.start.column(), range.end.column())
2490 };
2491
2492 while row != end_row {
2493 if above {
2494 row -= 1;
2495 } else {
2496 row += 1;
2497 }
2498
2499 if let Some(new_selection) = self.build_columnar_selection(
2500 &display_map,
2501 row,
2502 &columns,
2503 selection.reversed,
2504 ) {
2505 state.stack.push(new_selection.id);
2506 if above {
2507 new_selections.push(new_selection);
2508 new_selections.push(selection);
2509 } else {
2510 new_selections.push(selection);
2511 new_selections.push(new_selection);
2512 }
2513
2514 continue 'outer;
2515 }
2516 }
2517 }
2518
2519 new_selections.push(selection);
2520 }
2521 } else {
2522 new_selections = selections;
2523 new_selections.retain(|s| s.id != last_added_selection);
2524 state.stack.pop();
2525 }
2526
2527 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2528 if state.stack.len() > 1 {
2529 self.add_selections_state = Some(state);
2530 }
2531 }
2532
2533 pub fn select_next(&mut self, action: &SelectNext, cx: &mut ViewContext<Self>) {
2534 let replace_newest = action.0;
2535 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2536 let buffer = &display_map.buffer_snapshot;
2537 let mut selections = self.selections::<usize>(cx);
2538 if let Some(mut select_next_state) = self.select_next_state.take() {
2539 let query = &select_next_state.query;
2540 if !select_next_state.done {
2541 let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
2542 let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
2543 let mut next_selected_range = None;
2544
2545 let bytes_after_last_selection =
2546 buffer.bytes_in_range(last_selection.end..buffer.len());
2547 let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
2548 let query_matches = query
2549 .stream_find_iter(bytes_after_last_selection)
2550 .map(|result| (last_selection.end, result))
2551 .chain(
2552 query
2553 .stream_find_iter(bytes_before_first_selection)
2554 .map(|result| (0, result)),
2555 );
2556 for (start_offset, query_match) in query_matches {
2557 let query_match = query_match.unwrap(); // can only fail due to I/O
2558 let offset_range =
2559 start_offset + query_match.start()..start_offset + query_match.end();
2560 let display_range = offset_range.start.to_display_point(&display_map)
2561 ..offset_range.end.to_display_point(&display_map);
2562
2563 if !select_next_state.wordwise
2564 || (!movement::is_inside_word(&display_map, display_range.start)
2565 && !movement::is_inside_word(&display_map, display_range.end))
2566 {
2567 next_selected_range = Some(offset_range);
2568 break;
2569 }
2570 }
2571
2572 if let Some(next_selected_range) = next_selected_range {
2573 if replace_newest {
2574 if let Some(newest_id) =
2575 selections.iter().max_by_key(|s| s.id).map(|s| s.id)
2576 {
2577 selections.retain(|s| s.id != newest_id);
2578 }
2579 }
2580 selections.push(Selection {
2581 id: post_inc(&mut self.next_selection_id),
2582 start: next_selected_range.start,
2583 end: next_selected_range.end,
2584 reversed: false,
2585 goal: SelectionGoal::None,
2586 });
2587 selections.sort_unstable_by_key(|s| s.start);
2588 self.update_selections(selections, Some(Autoscroll::Newest), cx);
2589 } else {
2590 select_next_state.done = true;
2591 }
2592 }
2593
2594 self.select_next_state = Some(select_next_state);
2595 } else if selections.len() == 1 {
2596 let selection = selections.last_mut().unwrap();
2597 if selection.start == selection.end {
2598 let word_range = movement::surrounding_word(
2599 &display_map,
2600 selection.start.to_display_point(&display_map),
2601 );
2602 selection.start = word_range.start.to_offset(&display_map, Bias::Left);
2603 selection.end = word_range.end.to_offset(&display_map, Bias::Left);
2604 selection.goal = SelectionGoal::None;
2605 selection.reversed = false;
2606
2607 let query = buffer
2608 .text_for_range(selection.start..selection.end)
2609 .collect::<String>();
2610 let select_state = SelectNextState {
2611 query: AhoCorasick::new_auto_configured(&[query]),
2612 wordwise: true,
2613 done: false,
2614 };
2615 self.update_selections(selections, Some(Autoscroll::Newest), cx);
2616 self.select_next_state = Some(select_state);
2617 } else {
2618 let query = buffer
2619 .text_for_range(selection.start..selection.end)
2620 .collect::<String>();
2621 self.select_next_state = Some(SelectNextState {
2622 query: AhoCorasick::new_auto_configured(&[query]),
2623 wordwise: false,
2624 done: false,
2625 });
2626 self.select_next(action, cx);
2627 }
2628 }
2629 }
2630
2631 pub fn toggle_comments(&mut self, _: &ToggleComments, cx: &mut ViewContext<Self>) {
2632 // Get the line comment prefix. Split its trailing whitespace into a separate string,
2633 // as that portion won't be used for detecting if a line is a comment.
2634 let full_comment_prefix =
2635 if let Some(prefix) = self.language(cx).and_then(|l| l.line_comment_prefix()) {
2636 prefix.to_string()
2637 } else {
2638 return;
2639 };
2640 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
2641 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
2642
2643 self.start_transaction(cx);
2644 let mut selections = self.selections::<Point>(cx);
2645 let mut all_selection_lines_are_comments = true;
2646 let mut edit_ranges = Vec::new();
2647 let mut last_toggled_row = None;
2648 self.buffer.update(cx, |buffer, cx| {
2649 let buffer_snapshot = buffer.snapshot(cx);
2650 for selection in &mut selections {
2651 edit_ranges.clear();
2652
2653 let end_row =
2654 if selection.end.row > selection.start.row && selection.end.column == 0 {
2655 selection.end.row
2656 } else {
2657 selection.end.row + 1
2658 };
2659
2660 for row in selection.start.row..end_row {
2661 // If multiple selections contain a given row, avoid processing that
2662 // row more than once.
2663 if last_toggled_row == Some(row) {
2664 continue;
2665 } else {
2666 last_toggled_row = Some(row);
2667 }
2668
2669 if buffer_snapshot.is_line_blank(row) {
2670 continue;
2671 }
2672
2673 let start = Point::new(row, buffer_snapshot.indent_column_for_line(row));
2674 let mut line_bytes = buffer_snapshot
2675 .bytes_in_range(start..buffer.max_point())
2676 .flatten()
2677 .copied();
2678
2679 // If this line currently begins with the line comment prefix, then record
2680 // the range containing the prefix.
2681 if all_selection_lines_are_comments
2682 && line_bytes
2683 .by_ref()
2684 .take(comment_prefix.len())
2685 .eq(comment_prefix.bytes())
2686 {
2687 // Include any whitespace that matches the comment prefix.
2688 let matching_whitespace_len = line_bytes
2689 .zip(comment_prefix_whitespace.bytes())
2690 .take_while(|(a, b)| a == b)
2691 .count() as u32;
2692 let end = Point::new(
2693 row,
2694 start.column + comment_prefix.len() as u32 + matching_whitespace_len,
2695 );
2696 edit_ranges.push(start..end);
2697 }
2698 // If this line does not begin with the line comment prefix, then record
2699 // the position where the prefix should be inserted.
2700 else {
2701 all_selection_lines_are_comments = false;
2702 edit_ranges.push(start..start);
2703 }
2704 }
2705
2706 if !edit_ranges.is_empty() {
2707 if all_selection_lines_are_comments {
2708 buffer.edit(edit_ranges.iter().cloned(), "", cx);
2709 } else {
2710 let min_column = edit_ranges.iter().map(|r| r.start.column).min().unwrap();
2711 let edit_ranges = edit_ranges.iter().map(|range| {
2712 let position = Point::new(range.start.row, min_column);
2713 position..position
2714 });
2715 buffer.edit(edit_ranges, &full_comment_prefix, cx);
2716 }
2717 }
2718 }
2719 });
2720
2721 self.update_selections(self.selections::<usize>(cx), Some(Autoscroll::Fit), cx);
2722 self.end_transaction(cx);
2723 }
2724
2725 pub fn select_larger_syntax_node(
2726 &mut self,
2727 _: &SelectLargerSyntaxNode,
2728 cx: &mut ViewContext<Self>,
2729 ) {
2730 let old_selections = self.selections::<usize>(cx).into_boxed_slice();
2731 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2732 let buffer = self.buffer.read(cx).snapshot(cx);
2733
2734 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
2735 let mut selected_larger_node = false;
2736 let mut new_selections = old_selections
2737 .iter()
2738 .map(|selection| {
2739 let old_range = selection.start..selection.end;
2740 let mut new_range = old_range.clone();
2741 while let Some(containing_range) =
2742 buffer.range_for_syntax_ancestor(new_range.clone())
2743 {
2744 new_range = containing_range;
2745 if !display_map.intersects_fold(new_range.start)
2746 && !display_map.intersects_fold(new_range.end)
2747 {
2748 break;
2749 }
2750 }
2751
2752 selected_larger_node |= new_range != old_range;
2753 Selection {
2754 id: selection.id,
2755 start: new_range.start,
2756 end: new_range.end,
2757 goal: SelectionGoal::None,
2758 reversed: selection.reversed,
2759 }
2760 })
2761 .collect::<Vec<_>>();
2762
2763 if selected_larger_node {
2764 stack.push(old_selections);
2765 new_selections.sort_unstable_by_key(|selection| selection.start);
2766 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2767 }
2768 self.select_larger_syntax_node_stack = stack;
2769 }
2770
2771 pub fn select_smaller_syntax_node(
2772 &mut self,
2773 _: &SelectSmallerSyntaxNode,
2774 cx: &mut ViewContext<Self>,
2775 ) {
2776 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
2777 if let Some(selections) = stack.pop() {
2778 self.update_selections(selections.to_vec(), Some(Autoscroll::Fit), cx);
2779 }
2780 self.select_larger_syntax_node_stack = stack;
2781 }
2782
2783 pub fn move_to_enclosing_bracket(
2784 &mut self,
2785 _: &MoveToEnclosingBracket,
2786 cx: &mut ViewContext<Self>,
2787 ) {
2788 let mut selections = self.selections::<usize>(cx);
2789 let buffer = self.buffer.read(cx).snapshot(cx);
2790 for selection in &mut selections {
2791 if let Some((open_range, close_range)) =
2792 buffer.enclosing_bracket_ranges(selection.start..selection.end)
2793 {
2794 let close_range = close_range.to_inclusive();
2795 let destination = if close_range.contains(&selection.start)
2796 && close_range.contains(&selection.end)
2797 {
2798 open_range.end
2799 } else {
2800 *close_range.start()
2801 };
2802 selection.start = destination;
2803 selection.end = destination;
2804 }
2805 }
2806
2807 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2808 }
2809
2810 pub fn show_next_diagnostic(&mut self, _: &ShowNextDiagnostic, cx: &mut ViewContext<Self>) {
2811 let buffer = self.buffer.read(cx).snapshot(cx);
2812 let selection = self.newest_selection::<usize>(cx);
2813 let active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
2814 active_diagnostics
2815 .primary_range
2816 .to_offset(&buffer)
2817 .to_inclusive()
2818 });
2819 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
2820 if active_primary_range.contains(&selection.head()) {
2821 *active_primary_range.end()
2822 } else {
2823 selection.head()
2824 }
2825 } else {
2826 selection.head()
2827 };
2828
2829 loop {
2830 let next_group = buffer
2831 .diagnostics_in_range::<_, usize>(search_start..buffer.len())
2832 .find_map(|entry| {
2833 if entry.diagnostic.is_primary
2834 && !entry.range.is_empty()
2835 && Some(entry.range.end) != active_primary_range.as_ref().map(|r| *r.end())
2836 {
2837 Some((entry.range, entry.diagnostic.group_id))
2838 } else {
2839 None
2840 }
2841 });
2842
2843 if let Some((primary_range, group_id)) = next_group {
2844 self.activate_diagnostics(group_id, cx);
2845 self.update_selections(
2846 vec![Selection {
2847 id: selection.id,
2848 start: primary_range.start,
2849 end: primary_range.start,
2850 reversed: false,
2851 goal: SelectionGoal::None,
2852 }],
2853 Some(Autoscroll::Center),
2854 cx,
2855 );
2856 break;
2857 } else if search_start == 0 {
2858 break;
2859 } else {
2860 // Cycle around to the start of the buffer.
2861 search_start = 0;
2862 }
2863 }
2864 }
2865
2866 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
2867 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
2868 let buffer = self.buffer.read(cx).snapshot(cx);
2869 let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
2870 let is_valid = buffer
2871 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone())
2872 .any(|entry| {
2873 entry.diagnostic.is_primary
2874 && !entry.range.is_empty()
2875 && entry.range.start == primary_range_start
2876 && entry.diagnostic.message == active_diagnostics.primary_message
2877 });
2878
2879 if is_valid != active_diagnostics.is_valid {
2880 active_diagnostics.is_valid = is_valid;
2881 let mut new_styles = HashMap::new();
2882 for (block_id, diagnostic) in &active_diagnostics.blocks {
2883 let build_settings = self.build_settings.clone();
2884 let diagnostic = diagnostic.clone();
2885 new_styles.insert(*block_id, move |cx: &BlockContext| {
2886 let diagnostic = diagnostic.clone();
2887 let settings = build_settings.borrow()(cx.cx);
2888 render_diagnostic(diagnostic, &settings.style, is_valid, cx.anchor_x)
2889 });
2890 }
2891 self.display_map
2892 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
2893 }
2894 }
2895 }
2896
2897 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) {
2898 self.dismiss_diagnostics(cx);
2899 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
2900 let buffer = self.buffer.read(cx).snapshot(cx);
2901
2902 let mut primary_range = None;
2903 let mut primary_message = None;
2904 let mut group_end = Point::zero();
2905 let diagnostic_group = buffer
2906 .diagnostic_group::<Point>(group_id)
2907 .map(|entry| {
2908 if entry.range.end > group_end {
2909 group_end = entry.range.end;
2910 }
2911 if entry.diagnostic.is_primary {
2912 primary_range = Some(entry.range.clone());
2913 primary_message = Some(entry.diagnostic.message.clone());
2914 }
2915 entry
2916 })
2917 .collect::<Vec<_>>();
2918 let primary_range = primary_range.unwrap();
2919 let primary_message = primary_message.unwrap();
2920 let primary_range =
2921 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
2922
2923 let blocks = display_map
2924 .insert_blocks(
2925 diagnostic_group.iter().map(|entry| {
2926 let build_settings = self.build_settings.clone();
2927 let diagnostic = entry.diagnostic.clone();
2928 let message_height = diagnostic.message.lines().count() as u8;
2929
2930 BlockProperties {
2931 position: entry.range.start,
2932 height: message_height,
2933 render: Arc::new(move |cx| {
2934 let settings = build_settings.borrow()(cx.cx);
2935 let diagnostic = diagnostic.clone();
2936 render_diagnostic(diagnostic, &settings.style, true, cx.anchor_x)
2937 }),
2938 disposition: BlockDisposition::Below,
2939 }
2940 }),
2941 cx,
2942 )
2943 .into_iter()
2944 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
2945 .collect();
2946
2947 Some(ActiveDiagnosticGroup {
2948 primary_range,
2949 primary_message,
2950 blocks,
2951 is_valid: true,
2952 })
2953 });
2954 }
2955
2956 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
2957 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
2958 self.display_map.update(cx, |display_map, cx| {
2959 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
2960 });
2961 cx.notify();
2962 }
2963 }
2964
2965 fn build_columnar_selection(
2966 &mut self,
2967 display_map: &DisplaySnapshot,
2968 row: u32,
2969 columns: &Range<u32>,
2970 reversed: bool,
2971 ) -> Option<Selection<Point>> {
2972 let is_empty = columns.start == columns.end;
2973 let line_len = display_map.line_len(row);
2974 if columns.start < line_len || (is_empty && columns.start == line_len) {
2975 let start = DisplayPoint::new(row, columns.start);
2976 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
2977 Some(Selection {
2978 id: post_inc(&mut self.next_selection_id),
2979 start: start.to_point(display_map),
2980 end: end.to_point(display_map),
2981 reversed,
2982 goal: SelectionGoal::ColumnRange {
2983 start: columns.start,
2984 end: columns.end,
2985 },
2986 })
2987 } else {
2988 None
2989 }
2990 }
2991
2992 pub fn active_selection_sets<'a>(
2993 &'a self,
2994 cx: &'a AppContext,
2995 ) -> impl 'a + Iterator<Item = SelectionSetId> {
2996 let buffer = self.buffer.read(cx);
2997 let replica_id = buffer.replica_id();
2998 buffer
2999 .selection_sets()
3000 .filter(move |(set_id, set)| {
3001 set.active && (set_id.replica_id != replica_id || **set_id == self.selection_set_id)
3002 })
3003 .map(|(set_id, _)| *set_id)
3004 }
3005
3006 pub fn intersecting_selections<'a>(
3007 &'a self,
3008 set_id: SelectionSetId,
3009 range: Range<DisplayPoint>,
3010 cx: &'a mut MutableAppContext,
3011 ) -> Vec<Selection<DisplayPoint>> {
3012 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3013 let buffer = self.buffer.read(cx);
3014
3015 let pending_selection = if set_id == self.selection_set_id {
3016 self.pending_selection.as_ref().and_then(|pending| {
3017 let selection_start = pending.selection.start.to_display_point(&display_map);
3018 let selection_end = pending.selection.end.to_display_point(&display_map);
3019 if selection_start <= range.end || selection_end <= range.end {
3020 Some(Selection {
3021 id: pending.selection.id,
3022 start: selection_start,
3023 end: selection_end,
3024 reversed: pending.selection.reversed,
3025 goal: pending.selection.goal,
3026 })
3027 } else {
3028 None
3029 }
3030 })
3031 } else {
3032 None
3033 };
3034
3035 let range = (range.start.to_offset(&display_map, Bias::Left), Bias::Left)
3036 ..(range.end.to_offset(&display_map, Bias::Left), Bias::Right);
3037 buffer
3038 .selection_set(set_id)
3039 .unwrap()
3040 .intersecting_selections::<Point, _>(range, &buffer.as_snapshot())
3041 .map(move |s| Selection {
3042 id: s.id,
3043 start: s.start.to_display_point(&display_map),
3044 end: s.end.to_display_point(&display_map),
3045 reversed: s.reversed,
3046 goal: s.goal,
3047 })
3048 .chain(pending_selection)
3049 .collect()
3050 }
3051
3052 pub fn selections<'a, D>(&self, cx: &'a AppContext) -> Vec<Selection<D>>
3053 where
3054 D: 'a + TextDimension + Ord + Sub<D, Output = D>,
3055 {
3056 let buffer = self.buffer.read(cx).snapshot(cx);
3057 let mut selections = self.selection_set(cx).selections::<D>(&buffer).peekable();
3058 let mut pending_selection = self.pending_selection(cx);
3059
3060 iter::from_fn(move || {
3061 if let Some(pending) = pending_selection.as_mut() {
3062 while let Some(next_selection) = selections.peek() {
3063 if pending.start <= next_selection.end && pending.end >= next_selection.start {
3064 let next_selection = selections.next().unwrap();
3065 if next_selection.start < pending.start {
3066 pending.start = next_selection.start;
3067 }
3068 if next_selection.end > pending.end {
3069 pending.end = next_selection.end;
3070 }
3071 } else if next_selection.end < pending.start {
3072 return selections.next();
3073 } else {
3074 break;
3075 }
3076 }
3077
3078 pending_selection.take()
3079 } else {
3080 selections.next()
3081 }
3082 })
3083 .collect()
3084 }
3085
3086 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3087 &self,
3088 cx: &AppContext,
3089 ) -> Option<Selection<D>> {
3090 let buffer = self.buffer.read(cx).as_snapshot();
3091 self.pending_selection.as_ref().map(|pending| Selection {
3092 id: pending.selection.id,
3093 start: pending.selection.start.summary::<D>(&buffer),
3094 end: pending.selection.end.summary::<D>(&buffer),
3095 reversed: pending.selection.reversed,
3096 goal: pending.selection.goal,
3097 })
3098 }
3099
3100 fn selection_count<'a>(&self, cx: &'a AppContext) -> usize {
3101 let mut selection_count = self.selection_set(cx).len();
3102 if self.pending_selection.is_some() {
3103 selection_count += 1;
3104 }
3105 selection_count
3106 }
3107
3108 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3109 &self,
3110 snapshot: &MultiBufferSnapshot,
3111 cx: &AppContext,
3112 ) -> Selection<D> {
3113 self.selection_set(cx)
3114 .oldest_selection(snapshot)
3115 .or_else(|| self.pending_selection(cx))
3116 .unwrap()
3117 }
3118
3119 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3120 &self,
3121 cx: &AppContext,
3122 ) -> Selection<D> {
3123 self.pending_selection(cx)
3124 .or_else(|| {
3125 self.selection_set(cx)
3126 .newest_selection(&self.buffer.read(cx).as_snapshot())
3127 })
3128 .unwrap()
3129 }
3130
3131 fn selection_set<'a>(&self, cx: &'a AppContext) -> &'a SelectionSet {
3132 self.buffer
3133 .read(cx)
3134 .selection_set(self.selection_set_id)
3135 .unwrap()
3136 }
3137
3138 pub fn update_selections<T>(
3139 &mut self,
3140 mut selections: Vec<Selection<T>>,
3141 autoscroll: Option<Autoscroll>,
3142 cx: &mut ViewContext<Self>,
3143 ) where
3144 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
3145 {
3146 // Merge overlapping selections.
3147 let buffer = self.buffer.read(cx).snapshot(cx);
3148 let mut i = 1;
3149 while i < selections.len() {
3150 if selections[i - 1].end >= selections[i].start {
3151 let removed = selections.remove(i);
3152 if removed.start < selections[i - 1].start {
3153 selections[i - 1].start = removed.start;
3154 }
3155 if removed.end > selections[i - 1].end {
3156 selections[i - 1].end = removed.end;
3157 }
3158 } else {
3159 i += 1;
3160 }
3161 }
3162
3163 self.pending_selection = None;
3164 self.add_selections_state = None;
3165 self.select_next_state = None;
3166 self.select_larger_syntax_node_stack.clear();
3167 while let Some(autoclose_pair) = self.autoclose_stack.last() {
3168 let all_selections_inside_autoclose_ranges =
3169 if selections.len() == autoclose_pair.ranges.len() {
3170 selections
3171 .iter()
3172 .zip(autoclose_pair.ranges.iter().map(|r| r.to_point(buffer)))
3173 .all(|(selection, autoclose_range)| {
3174 let head = selection.head().to_point(&buffer);
3175 autoclose_range.start <= head && autoclose_range.end >= head
3176 })
3177 } else {
3178 false
3179 };
3180
3181 if all_selections_inside_autoclose_ranges {
3182 break;
3183 } else {
3184 self.autoclose_stack.pop();
3185 }
3186 }
3187
3188 if let Some(autoscroll) = autoscroll {
3189 self.request_autoscroll(autoscroll, cx);
3190 }
3191 self.pause_cursor_blinking(cx);
3192
3193 self.buffer.update(cx, |buffer, cx| {
3194 buffer
3195 .update_selection_set(self.selection_set_id, &selections, cx)
3196 .unwrap();
3197 });
3198 }
3199
3200 fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
3201 self.autoscroll_request = Some(autoscroll);
3202 cx.notify();
3203 }
3204
3205 fn start_transaction(&mut self, cx: &mut ViewContext<Self>) {
3206 self.end_selection(cx);
3207 self.buffer.update(cx, |buffer, cx| {
3208 buffer
3209 .start_transaction([self.selection_set_id], cx)
3210 .unwrap()
3211 });
3212 }
3213
3214 fn end_transaction(&self, cx: &mut ViewContext<Self>) {
3215 self.buffer.update(cx, |buffer, cx| {
3216 buffer.end_transaction([self.selection_set_id], cx).unwrap()
3217 });
3218 }
3219
3220 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
3221 log::info!("Editor::page_up");
3222 }
3223
3224 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
3225 log::info!("Editor::page_down");
3226 }
3227
3228 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
3229 let mut fold_ranges = Vec::new();
3230
3231 let selections = self.selections::<Point>(cx);
3232 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3233 for selection in selections {
3234 let range = selection.display_range(&display_map).sorted();
3235 let buffer_start_row = range.start.to_point(&display_map).row;
3236
3237 for row in (0..=range.end.row()).rev() {
3238 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
3239 let fold_range = self.foldable_range_for_line(&display_map, row);
3240 if fold_range.end.row >= buffer_start_row {
3241 fold_ranges.push(fold_range);
3242 if row <= range.start.row() {
3243 break;
3244 }
3245 }
3246 }
3247 }
3248 }
3249
3250 self.fold_ranges(fold_ranges, cx);
3251 }
3252
3253 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
3254 let selections = self.selections::<Point>(cx);
3255 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3256 let buffer = self.buffer.read(cx);
3257 let ranges = selections
3258 .iter()
3259 .map(|s| {
3260 let range = s.display_range(&display_map).sorted();
3261 let mut start = range.start.to_point(&display_map);
3262 let mut end = range.end.to_point(&display_map);
3263 start.column = 0;
3264 end.column = buffer.line_len(end.row);
3265 start..end
3266 })
3267 .collect::<Vec<_>>();
3268 self.unfold_ranges(ranges, cx);
3269 }
3270
3271 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
3272 let max_point = display_map.max_point();
3273 if display_row >= max_point.row() {
3274 false
3275 } else {
3276 let (start_indent, is_blank) = display_map.line_indent(display_row);
3277 if is_blank {
3278 false
3279 } else {
3280 for display_row in display_row + 1..=max_point.row() {
3281 let (indent, is_blank) = display_map.line_indent(display_row);
3282 if !is_blank {
3283 return indent > start_indent;
3284 }
3285 }
3286 false
3287 }
3288 }
3289 }
3290
3291 fn foldable_range_for_line(
3292 &self,
3293 display_map: &DisplaySnapshot,
3294 start_row: u32,
3295 ) -> Range<Point> {
3296 let max_point = display_map.max_point();
3297
3298 let (start_indent, _) = display_map.line_indent(start_row);
3299 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
3300 let mut end = None;
3301 for row in start_row + 1..=max_point.row() {
3302 let (indent, is_blank) = display_map.line_indent(row);
3303 if !is_blank && indent <= start_indent {
3304 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
3305 break;
3306 }
3307 }
3308
3309 let end = end.unwrap_or(max_point);
3310 return start.to_point(display_map)..end.to_point(display_map);
3311 }
3312
3313 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
3314 let selections = self.selections::<Point>(cx);
3315 let ranges = selections.into_iter().map(|s| s.start..s.end);
3316 self.fold_ranges(ranges, cx);
3317 }
3318
3319 fn fold_ranges<T: ToOffset>(
3320 &mut self,
3321 ranges: impl IntoIterator<Item = Range<T>>,
3322 cx: &mut ViewContext<Self>,
3323 ) {
3324 let mut ranges = ranges.into_iter().peekable();
3325 if ranges.peek().is_some() {
3326 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
3327 self.request_autoscroll(Autoscroll::Fit, cx);
3328 cx.notify();
3329 }
3330 }
3331
3332 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
3333 if !ranges.is_empty() {
3334 self.display_map
3335 .update(cx, |map, cx| map.unfold(ranges, cx));
3336 self.request_autoscroll(Autoscroll::Fit, cx);
3337 cx.notify();
3338 }
3339 }
3340
3341 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
3342 self.display_map
3343 .update(cx, |map, cx| map.snapshot(cx))
3344 .longest_row()
3345 }
3346
3347 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
3348 self.display_map
3349 .update(cx, |map, cx| map.snapshot(cx))
3350 .max_point()
3351 }
3352
3353 pub fn text(&self, cx: &AppContext) -> String {
3354 self.buffer.read(cx).text()
3355 }
3356
3357 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
3358 self.display_map
3359 .update(cx, |map, cx| map.snapshot(cx))
3360 .text()
3361 }
3362
3363 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
3364 self.display_map
3365 .update(cx, |map, cx| map.set_wrap_width(width, cx))
3366 }
3367
3368 pub fn set_highlighted_row(&mut self, row: Option<u32>) {
3369 self.highlighted_row = row;
3370 }
3371
3372 pub fn highlighted_row(&mut self) -> Option<u32> {
3373 self.highlighted_row
3374 }
3375
3376 fn next_blink_epoch(&mut self) -> usize {
3377 self.blink_epoch += 1;
3378 self.blink_epoch
3379 }
3380
3381 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
3382 self.show_local_cursors = true;
3383 cx.notify();
3384
3385 let epoch = self.next_blink_epoch();
3386 cx.spawn(|this, mut cx| {
3387 let this = this.downgrade();
3388 async move {
3389 Timer::after(CURSOR_BLINK_INTERVAL).await;
3390 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
3391 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
3392 }
3393 }
3394 })
3395 .detach();
3396 }
3397
3398 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
3399 if epoch == self.blink_epoch {
3400 self.blinking_paused = false;
3401 self.blink_cursors(epoch, cx);
3402 }
3403 }
3404
3405 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
3406 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
3407 self.show_local_cursors = !self.show_local_cursors;
3408 cx.notify();
3409
3410 let epoch = self.next_blink_epoch();
3411 cx.spawn(|this, mut cx| {
3412 let this = this.downgrade();
3413 async move {
3414 Timer::after(CURSOR_BLINK_INTERVAL).await;
3415 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
3416 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
3417 }
3418 }
3419 })
3420 .detach();
3421 }
3422 }
3423
3424 pub fn show_local_cursors(&self) -> bool {
3425 self.show_local_cursors
3426 }
3427
3428 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
3429 self.refresh_active_diagnostics(cx);
3430 cx.notify();
3431 }
3432
3433 fn on_buffer_event(
3434 &mut self,
3435 _: ModelHandle<MultiBuffer>,
3436 event: &language::Event,
3437 cx: &mut ViewContext<Self>,
3438 ) {
3439 match event {
3440 language::Event::Edited => cx.emit(Event::Edited),
3441 language::Event::Dirtied => cx.emit(Event::Dirtied),
3442 language::Event::Saved => cx.emit(Event::Saved),
3443 language::Event::FileHandleChanged => cx.emit(Event::FileHandleChanged),
3444 language::Event::Reloaded => cx.emit(Event::FileHandleChanged),
3445 language::Event::Closed => cx.emit(Event::Closed),
3446 _ => {}
3447 }
3448 }
3449
3450 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
3451 cx.notify();
3452 }
3453}
3454
3455impl EditorSnapshot {
3456 pub fn is_focused(&self) -> bool {
3457 self.is_focused
3458 }
3459
3460 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
3461 self.placeholder_text.as_ref()
3462 }
3463
3464 pub fn scroll_position(&self) -> Vector2F {
3465 compute_scroll_position(
3466 &self.display_snapshot,
3467 self.scroll_position,
3468 &self.scroll_top_anchor,
3469 )
3470 }
3471}
3472
3473impl Deref for EditorSnapshot {
3474 type Target = DisplaySnapshot;
3475
3476 fn deref(&self) -> &Self::Target {
3477 &self.display_snapshot
3478 }
3479}
3480
3481impl EditorSettings {
3482 #[cfg(any(test, feature = "test-support"))]
3483 pub fn test(cx: &AppContext) -> Self {
3484 Self {
3485 tab_size: 4,
3486 soft_wrap: SoftWrap::None,
3487 style: {
3488 let font_cache: &gpui::FontCache = cx.font_cache();
3489 let font_family_name = Arc::from("Monaco");
3490 let font_properties = Default::default();
3491 let font_family_id = font_cache.load_family(&[&font_family_name]).unwrap();
3492 let font_id = font_cache
3493 .select_font(font_family_id, &font_properties)
3494 .unwrap();
3495 EditorStyle {
3496 text: gpui::fonts::TextStyle {
3497 font_family_name,
3498 font_family_id,
3499 font_id,
3500 font_size: 14.,
3501 color: gpui::color::Color::from_u32(0xff0000ff),
3502 font_properties,
3503 underline: None,
3504 },
3505 placeholder_text: None,
3506 background: Default::default(),
3507 gutter_background: Default::default(),
3508 active_line_background: Default::default(),
3509 highlighted_line_background: Default::default(),
3510 line_number: Default::default(),
3511 line_number_active: Default::default(),
3512 selection: Default::default(),
3513 guest_selections: Default::default(),
3514 syntax: Default::default(),
3515 error_diagnostic: Default::default(),
3516 invalid_error_diagnostic: Default::default(),
3517 warning_diagnostic: Default::default(),
3518 invalid_warning_diagnostic: Default::default(),
3519 information_diagnostic: Default::default(),
3520 invalid_information_diagnostic: Default::default(),
3521 hint_diagnostic: Default::default(),
3522 invalid_hint_diagnostic: Default::default(),
3523 }
3524 },
3525 }
3526 }
3527}
3528
3529fn compute_scroll_position(
3530 snapshot: &DisplaySnapshot,
3531 mut scroll_position: Vector2F,
3532 scroll_top_anchor: &Anchor,
3533) -> Vector2F {
3534 let scroll_top = scroll_top_anchor.to_display_point(snapshot).row() as f32;
3535 scroll_position.set_y(scroll_top + scroll_position.y());
3536 scroll_position
3537}
3538
3539pub enum Event {
3540 Activate,
3541 Edited,
3542 Blurred,
3543 Dirtied,
3544 Saved,
3545 FileHandleChanged,
3546 Closed,
3547}
3548
3549impl Entity for Editor {
3550 type Event = Event;
3551
3552 fn release(&mut self, cx: &mut MutableAppContext) {
3553 self.buffer.update(cx, |buffer, cx| {
3554 buffer
3555 .remove_selection_set(self.selection_set_id, cx)
3556 .unwrap();
3557 });
3558 }
3559}
3560
3561impl View for Editor {
3562 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
3563 let settings = self.build_settings.borrow_mut()(cx);
3564 self.display_map.update(cx, |map, cx| {
3565 map.set_font(
3566 settings.style.text.font_id,
3567 settings.style.text.font_size,
3568 cx,
3569 )
3570 });
3571 EditorElement::new(self.handle.clone(), settings).boxed()
3572 }
3573
3574 fn ui_name() -> &'static str {
3575 "Editor"
3576 }
3577
3578 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
3579 self.focused = true;
3580 self.blink_cursors(self.blink_epoch, cx);
3581 self.buffer.update(cx, |buffer, cx| {
3582 buffer
3583 .set_active_selection_set(Some(self.selection_set_id), cx)
3584 .unwrap();
3585 });
3586 }
3587
3588 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
3589 self.focused = false;
3590 self.show_local_cursors = false;
3591 self.buffer.update(cx, |buffer, cx| {
3592 buffer.set_active_selection_set(None, cx).unwrap();
3593 });
3594 cx.emit(Event::Blurred);
3595 cx.notify();
3596 }
3597
3598 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
3599 let mut cx = Self::default_keymap_context();
3600 let mode = match self.mode {
3601 EditorMode::SingleLine => "single_line",
3602 EditorMode::AutoHeight { .. } => "auto_height",
3603 EditorMode::Full => "full",
3604 };
3605 cx.map.insert("mode".into(), mode.into());
3606 cx
3607 }
3608}
3609
3610impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
3611 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
3612 let start = self.start.to_point(buffer);
3613 let end = self.end.to_point(buffer);
3614 if self.reversed {
3615 end..start
3616 } else {
3617 start..end
3618 }
3619 }
3620
3621 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
3622 let start = self.start.to_offset(buffer);
3623 let end = self.end.to_offset(buffer);
3624 if self.reversed {
3625 end..start
3626 } else {
3627 start..end
3628 }
3629 }
3630
3631 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
3632 let start = self
3633 .start
3634 .to_point(&map.buffer_snapshot)
3635 .to_display_point(map);
3636 let end = self
3637 .end
3638 .to_point(&map.buffer_snapshot)
3639 .to_display_point(map);
3640 if self.reversed {
3641 end..start
3642 } else {
3643 start..end
3644 }
3645 }
3646
3647 fn spanned_rows(
3648 &self,
3649 include_end_if_at_line_start: bool,
3650 map: &DisplaySnapshot,
3651 ) -> SpannedRows {
3652 let display_start = self
3653 .start
3654 .to_point(&map.buffer_snapshot)
3655 .to_display_point(map);
3656 let mut display_end = self
3657 .end
3658 .to_point(&map.buffer_snapshot)
3659 .to_display_point(map);
3660 if !include_end_if_at_line_start
3661 && display_end.row() != map.max_point().row()
3662 && display_start.row() != display_end.row()
3663 && display_end.column() == 0
3664 {
3665 *display_end.row_mut() -= 1;
3666 }
3667
3668 let (display_start, buffer_start) = map.prev_row_boundary(display_start);
3669 let (display_end, buffer_end) = map.next_row_boundary(display_end);
3670
3671 SpannedRows {
3672 buffer_rows: buffer_start.row..buffer_end.row + 1,
3673 display_rows: display_start.row()..display_end.row() + 1,
3674 }
3675 }
3676}
3677
3678fn render_diagnostic(
3679 diagnostic: Diagnostic,
3680 style: &EditorStyle,
3681 valid: bool,
3682 anchor_x: f32,
3683) -> ElementBox {
3684 let mut text_style = style.text.clone();
3685 text_style.color = diagnostic_style(diagnostic.severity, valid, &style).text;
3686 Text::new(diagnostic.message, text_style)
3687 .contained()
3688 .with_margin_left(anchor_x)
3689 .boxed()
3690}
3691
3692pub fn diagnostic_style(
3693 severity: DiagnosticSeverity,
3694 valid: bool,
3695 style: &EditorStyle,
3696) -> DiagnosticStyle {
3697 match (severity, valid) {
3698 (DiagnosticSeverity::ERROR, true) => style.error_diagnostic,
3699 (DiagnosticSeverity::ERROR, false) => style.invalid_error_diagnostic,
3700 (DiagnosticSeverity::WARNING, true) => style.warning_diagnostic,
3701 (DiagnosticSeverity::WARNING, false) => style.invalid_warning_diagnostic,
3702 (DiagnosticSeverity::INFORMATION, true) => style.information_diagnostic,
3703 (DiagnosticSeverity::INFORMATION, false) => style.invalid_information_diagnostic,
3704 (DiagnosticSeverity::HINT, true) => style.hint_diagnostic,
3705 (DiagnosticSeverity::HINT, false) => style.invalid_hint_diagnostic,
3706 _ => Default::default(),
3707 }
3708}
3709
3710#[cfg(test)]
3711mod tests {
3712 use super::*;
3713 use language::LanguageConfig;
3714 use text::Point;
3715 use unindent::Unindent;
3716 use util::test::sample_text;
3717
3718 #[gpui::test]
3719 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
3720 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
3721 let settings = EditorSettings::test(cx);
3722 let (_, editor) =
3723 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3724
3725 editor.update(cx, |view, cx| {
3726 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
3727 });
3728
3729 assert_eq!(
3730 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3731 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
3732 );
3733
3734 editor.update(cx, |view, cx| {
3735 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
3736 });
3737
3738 assert_eq!(
3739 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3740 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
3741 );
3742
3743 editor.update(cx, |view, cx| {
3744 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
3745 });
3746
3747 assert_eq!(
3748 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3749 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
3750 );
3751
3752 editor.update(cx, |view, cx| {
3753 view.end_selection(cx);
3754 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
3755 });
3756
3757 assert_eq!(
3758 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3759 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
3760 );
3761
3762 editor.update(cx, |view, cx| {
3763 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
3764 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
3765 });
3766
3767 assert_eq!(
3768 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3769 [
3770 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
3771 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
3772 ]
3773 );
3774
3775 editor.update(cx, |view, cx| {
3776 view.end_selection(cx);
3777 });
3778
3779 assert_eq!(
3780 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3781 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
3782 );
3783 }
3784
3785 #[gpui::test]
3786 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
3787 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
3788 let settings = EditorSettings::test(cx);
3789 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3790
3791 view.update(cx, |view, cx| {
3792 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
3793 assert_eq!(
3794 view.selection_ranges(cx),
3795 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
3796 );
3797 });
3798
3799 view.update(cx, |view, cx| {
3800 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
3801 assert_eq!(
3802 view.selection_ranges(cx),
3803 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
3804 );
3805 });
3806
3807 view.update(cx, |view, cx| {
3808 view.cancel(&Cancel, cx);
3809 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
3810 assert_eq!(
3811 view.selection_ranges(cx),
3812 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
3813 );
3814 });
3815 }
3816
3817 #[gpui::test]
3818 fn test_cancel(cx: &mut gpui::MutableAppContext) {
3819 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
3820 let settings = EditorSettings::test(cx);
3821 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3822
3823 view.update(cx, |view, cx| {
3824 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
3825 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
3826 view.end_selection(cx);
3827
3828 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
3829 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
3830 view.end_selection(cx);
3831 assert_eq!(
3832 view.selection_ranges(cx),
3833 [
3834 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
3835 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
3836 ]
3837 );
3838 });
3839
3840 view.update(cx, |view, cx| {
3841 view.cancel(&Cancel, cx);
3842 assert_eq!(
3843 view.selection_ranges(cx),
3844 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
3845 );
3846 });
3847
3848 view.update(cx, |view, cx| {
3849 view.cancel(&Cancel, cx);
3850 assert_eq!(
3851 view.selection_ranges(cx),
3852 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
3853 );
3854 });
3855 }
3856
3857 #[gpui::test]
3858 fn test_fold(cx: &mut gpui::MutableAppContext) {
3859 let buffer = MultiBuffer::build_simple(
3860 &"
3861 impl Foo {
3862 // Hello!
3863
3864 fn a() {
3865 1
3866 }
3867
3868 fn b() {
3869 2
3870 }
3871
3872 fn c() {
3873 3
3874 }
3875 }
3876 "
3877 .unindent(),
3878 cx,
3879 );
3880 let settings = EditorSettings::test(&cx);
3881 let (_, view) = cx.add_window(Default::default(), |cx| {
3882 build_editor(buffer.clone(), settings, cx)
3883 });
3884
3885 view.update(cx, |view, cx| {
3886 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx)
3887 .unwrap();
3888 view.fold(&Fold, cx);
3889 assert_eq!(
3890 view.display_text(cx),
3891 "
3892 impl Foo {
3893 // Hello!
3894
3895 fn a() {
3896 1
3897 }
3898
3899 fn b() {…
3900 }
3901
3902 fn c() {…
3903 }
3904 }
3905 "
3906 .unindent(),
3907 );
3908
3909 view.fold(&Fold, cx);
3910 assert_eq!(
3911 view.display_text(cx),
3912 "
3913 impl Foo {…
3914 }
3915 "
3916 .unindent(),
3917 );
3918
3919 view.unfold(&Unfold, cx);
3920 assert_eq!(
3921 view.display_text(cx),
3922 "
3923 impl Foo {
3924 // Hello!
3925
3926 fn a() {
3927 1
3928 }
3929
3930 fn b() {…
3931 }
3932
3933 fn c() {…
3934 }
3935 }
3936 "
3937 .unindent(),
3938 );
3939
3940 view.unfold(&Unfold, cx);
3941 assert_eq!(view.display_text(cx), buffer.read(cx).text());
3942 });
3943 }
3944
3945 #[gpui::test]
3946 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
3947 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
3948 let settings = EditorSettings::test(&cx);
3949 let (_, view) = cx.add_window(Default::default(), |cx| {
3950 build_editor(buffer.clone(), settings, cx)
3951 });
3952
3953 buffer.update(cx, |buffer, cx| {
3954 buffer.edit(
3955 vec![
3956 Point::new(1, 0)..Point::new(1, 0),
3957 Point::new(1, 1)..Point::new(1, 1),
3958 ],
3959 "\t",
3960 cx,
3961 );
3962 });
3963
3964 view.update(cx, |view, cx| {
3965 assert_eq!(
3966 view.selection_ranges(cx),
3967 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
3968 );
3969
3970 view.move_down(&MoveDown, cx);
3971 assert_eq!(
3972 view.selection_ranges(cx),
3973 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
3974 );
3975
3976 view.move_right(&MoveRight, cx);
3977 assert_eq!(
3978 view.selection_ranges(cx),
3979 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
3980 );
3981
3982 view.move_left(&MoveLeft, cx);
3983 assert_eq!(
3984 view.selection_ranges(cx),
3985 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
3986 );
3987
3988 view.move_up(&MoveUp, cx);
3989 assert_eq!(
3990 view.selection_ranges(cx),
3991 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
3992 );
3993
3994 view.move_to_end(&MoveToEnd, cx);
3995 assert_eq!(
3996 view.selection_ranges(cx),
3997 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
3998 );
3999
4000 view.move_to_beginning(&MoveToBeginning, cx);
4001 assert_eq!(
4002 view.selection_ranges(cx),
4003 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
4004 );
4005
4006 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx)
4007 .unwrap();
4008 view.select_to_beginning(&SelectToBeginning, cx);
4009 assert_eq!(
4010 view.selection_ranges(cx),
4011 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
4012 );
4013
4014 view.select_to_end(&SelectToEnd, cx);
4015 assert_eq!(
4016 view.selection_ranges(cx),
4017 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
4018 );
4019 });
4020 }
4021
4022 #[gpui::test]
4023 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
4024 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
4025 let settings = EditorSettings::test(&cx);
4026 let (_, view) = cx.add_window(Default::default(), |cx| {
4027 build_editor(buffer.clone(), settings, cx)
4028 });
4029
4030 assert_eq!('ⓐ'.len_utf8(), 3);
4031 assert_eq!('α'.len_utf8(), 2);
4032
4033 view.update(cx, |view, cx| {
4034 view.fold_ranges(
4035 vec![
4036 Point::new(0, 6)..Point::new(0, 12),
4037 Point::new(1, 2)..Point::new(1, 4),
4038 Point::new(2, 4)..Point::new(2, 8),
4039 ],
4040 cx,
4041 );
4042 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
4043
4044 view.move_right(&MoveRight, cx);
4045 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐ".len())]);
4046 view.move_right(&MoveRight, cx);
4047 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ".len())]);
4048 view.move_right(&MoveRight, cx);
4049 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ…".len())]);
4050
4051 view.move_down(&MoveDown, cx);
4052 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "ab…".len())]);
4053 view.move_left(&MoveLeft, cx);
4054 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "ab".len())]);
4055 view.move_left(&MoveLeft, cx);
4056 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "a".len())]);
4057
4058 view.move_down(&MoveDown, cx);
4059 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "α".len())]);
4060 view.move_right(&MoveRight, cx);
4061 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβ".len())]);
4062 view.move_right(&MoveRight, cx);
4063 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβ…".len())]);
4064 view.move_right(&MoveRight, cx);
4065 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβ…ε".len())]);
4066
4067 view.move_up(&MoveUp, cx);
4068 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "ab…e".len())]);
4069 view.move_up(&MoveUp, cx);
4070 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ…ⓔ".len())]);
4071 view.move_left(&MoveLeft, cx);
4072 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ…".len())]);
4073 view.move_left(&MoveLeft, cx);
4074 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ".len())]);
4075 view.move_left(&MoveLeft, cx);
4076 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐ".len())]);
4077 });
4078 }
4079
4080 #[gpui::test]
4081 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
4082 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
4083 let settings = EditorSettings::test(&cx);
4084 let (_, view) = cx.add_window(Default::default(), |cx| {
4085 build_editor(buffer.clone(), settings, cx)
4086 });
4087 view.update(cx, |view, cx| {
4088 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx)
4089 .unwrap();
4090
4091 view.move_down(&MoveDown, cx);
4092 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "abcd".len())]);
4093
4094 view.move_down(&MoveDown, cx);
4095 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβγ".len())]);
4096
4097 view.move_down(&MoveDown, cx);
4098 assert_eq!(view.selection_ranges(cx), &[empty_range(3, "abcd".len())]);
4099
4100 view.move_down(&MoveDown, cx);
4101 assert_eq!(view.selection_ranges(cx), &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]);
4102
4103 view.move_up(&MoveUp, cx);
4104 assert_eq!(view.selection_ranges(cx), &[empty_range(3, "abcd".len())]);
4105
4106 view.move_up(&MoveUp, cx);
4107 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβγ".len())]);
4108 });
4109 }
4110
4111 #[gpui::test]
4112 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
4113 let buffer = MultiBuffer::build_simple("abc\n def", cx);
4114 let settings = EditorSettings::test(&cx);
4115 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4116 view.update(cx, |view, cx| {
4117 view.select_display_ranges(
4118 &[
4119 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4120 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
4121 ],
4122 cx,
4123 )
4124 .unwrap();
4125 });
4126
4127 view.update(cx, |view, cx| {
4128 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
4129 assert_eq!(
4130 view.selection_ranges(cx),
4131 &[
4132 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4133 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
4134 ]
4135 );
4136 });
4137
4138 view.update(cx, |view, cx| {
4139 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
4140 assert_eq!(
4141 view.selection_ranges(cx),
4142 &[
4143 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4144 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4145 ]
4146 );
4147 });
4148
4149 view.update(cx, |view, cx| {
4150 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
4151 assert_eq!(
4152 view.selection_ranges(cx),
4153 &[
4154 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4155 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
4156 ]
4157 );
4158 });
4159
4160 view.update(cx, |view, cx| {
4161 view.move_to_end_of_line(&MoveToEndOfLine, cx);
4162 assert_eq!(
4163 view.selection_ranges(cx),
4164 &[
4165 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4166 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
4167 ]
4168 );
4169 });
4170
4171 // Moving to the end of line again is a no-op.
4172 view.update(cx, |view, cx| {
4173 view.move_to_end_of_line(&MoveToEndOfLine, cx);
4174 assert_eq!(
4175 view.selection_ranges(cx),
4176 &[
4177 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4178 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
4179 ]
4180 );
4181 });
4182
4183 view.update(cx, |view, cx| {
4184 view.move_left(&MoveLeft, cx);
4185 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
4186 assert_eq!(
4187 view.selection_ranges(cx),
4188 &[
4189 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
4190 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
4191 ]
4192 );
4193 });
4194
4195 view.update(cx, |view, cx| {
4196 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
4197 assert_eq!(
4198 view.selection_ranges(cx),
4199 &[
4200 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
4201 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
4202 ]
4203 );
4204 });
4205
4206 view.update(cx, |view, cx| {
4207 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
4208 assert_eq!(
4209 view.selection_ranges(cx),
4210 &[
4211 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
4212 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
4213 ]
4214 );
4215 });
4216
4217 view.update(cx, |view, cx| {
4218 view.select_to_end_of_line(&SelectToEndOfLine, cx);
4219 assert_eq!(
4220 view.selection_ranges(cx),
4221 &[
4222 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
4223 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
4224 ]
4225 );
4226 });
4227
4228 view.update(cx, |view, cx| {
4229 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
4230 assert_eq!(view.display_text(cx), "ab\n de");
4231 assert_eq!(
4232 view.selection_ranges(cx),
4233 &[
4234 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4235 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
4236 ]
4237 );
4238 });
4239
4240 view.update(cx, |view, cx| {
4241 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
4242 assert_eq!(view.display_text(cx), "\n");
4243 assert_eq!(
4244 view.selection_ranges(cx),
4245 &[
4246 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4247 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4248 ]
4249 );
4250 });
4251 }
4252
4253 #[gpui::test]
4254 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
4255 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
4256 let settings = EditorSettings::test(&cx);
4257 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4258 view.update(cx, |view, cx| {
4259 view.select_display_ranges(
4260 &[
4261 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
4262 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
4263 ],
4264 cx,
4265 )
4266 .unwrap();
4267 });
4268
4269 view.update(cx, |view, cx| {
4270 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4271 assert_eq!(
4272 view.selection_ranges(cx),
4273 &[
4274 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
4275 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
4276 ]
4277 );
4278 });
4279
4280 view.update(cx, |view, cx| {
4281 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4282 assert_eq!(
4283 view.selection_ranges(cx),
4284 &[
4285 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
4286 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2),
4287 ]
4288 );
4289 });
4290
4291 view.update(cx, |view, cx| {
4292 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4293 assert_eq!(
4294 view.selection_ranges(cx),
4295 &[
4296 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
4297 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
4298 ]
4299 );
4300 });
4301
4302 view.update(cx, |view, cx| {
4303 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4304 assert_eq!(
4305 view.selection_ranges(cx),
4306 &[
4307 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4308 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4309 ]
4310 );
4311 });
4312
4313 view.update(cx, |view, cx| {
4314 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4315 assert_eq!(
4316 view.selection_ranges(cx),
4317 &[
4318 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4319 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 23),
4320 ]
4321 );
4322 });
4323
4324 view.update(cx, |view, cx| {
4325 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4326 assert_eq!(
4327 view.selection_ranges(cx),
4328 &[
4329 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4330 DisplayPoint::new(0, 24)..DisplayPoint::new(0, 24),
4331 ]
4332 );
4333 });
4334
4335 view.update(cx, |view, cx| {
4336 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4337 assert_eq!(
4338 view.selection_ranges(cx),
4339 &[
4340 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
4341 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4342 ]
4343 );
4344 });
4345
4346 view.update(cx, |view, cx| {
4347 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4348 assert_eq!(
4349 view.selection_ranges(cx),
4350 &[
4351 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
4352 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
4353 ]
4354 );
4355 });
4356
4357 view.update(cx, |view, cx| {
4358 view.move_right(&MoveRight, cx);
4359 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
4360 assert_eq!(
4361 view.selection_ranges(cx),
4362 &[
4363 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
4364 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
4365 ]
4366 );
4367 });
4368
4369 view.update(cx, |view, cx| {
4370 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
4371 assert_eq!(
4372 view.selection_ranges(cx),
4373 &[
4374 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 7),
4375 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 2),
4376 ]
4377 );
4378 });
4379
4380 view.update(cx, |view, cx| {
4381 view.select_to_next_word_boundary(&SelectToNextWordBoundary, cx);
4382 assert_eq!(
4383 view.selection_ranges(cx),
4384 &[
4385 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
4386 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
4387 ]
4388 );
4389 });
4390 }
4391
4392 #[gpui::test]
4393 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
4394 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
4395 let settings = EditorSettings::test(&cx);
4396 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4397
4398 view.update(cx, |view, cx| {
4399 view.set_wrap_width(Some(140.), cx);
4400 assert_eq!(
4401 view.display_text(cx),
4402 "use one::{\n two::three::\n four::five\n};"
4403 );
4404
4405 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx)
4406 .unwrap();
4407
4408 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4409 assert_eq!(
4410 view.selection_ranges(cx),
4411 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
4412 );
4413
4414 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4415 assert_eq!(
4416 view.selection_ranges(cx),
4417 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
4418 );
4419
4420 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4421 assert_eq!(
4422 view.selection_ranges(cx),
4423 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
4424 );
4425
4426 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4427 assert_eq!(
4428 view.selection_ranges(cx),
4429 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
4430 );
4431
4432 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4433 assert_eq!(
4434 view.selection_ranges(cx),
4435 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
4436 );
4437
4438 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4439 assert_eq!(
4440 view.selection_ranges(cx),
4441 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
4442 );
4443 });
4444 }
4445
4446 #[gpui::test]
4447 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
4448 let buffer = MultiBuffer::build_simple("one two three four", cx);
4449 let settings = EditorSettings::test(&cx);
4450 let (_, view) = cx.add_window(Default::default(), |cx| {
4451 build_editor(buffer.clone(), settings, cx)
4452 });
4453
4454 view.update(cx, |view, cx| {
4455 view.select_display_ranges(
4456 &[
4457 // an empty selection - the preceding word fragment is deleted
4458 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4459 // characters selected - they are deleted
4460 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
4461 ],
4462 cx,
4463 )
4464 .unwrap();
4465 view.delete_to_previous_word_boundary(&DeleteToPreviousWordBoundary, cx);
4466 });
4467
4468 assert_eq!(buffer.read(cx).text(), "e two te four");
4469
4470 view.update(cx, |view, cx| {
4471 view.select_display_ranges(
4472 &[
4473 // an empty selection - the following word fragment is deleted
4474 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4475 // characters selected - they are deleted
4476 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
4477 ],
4478 cx,
4479 )
4480 .unwrap();
4481 view.delete_to_next_word_boundary(&DeleteToNextWordBoundary, cx);
4482 });
4483
4484 assert_eq!(buffer.read(cx).text(), "e t te our");
4485 }
4486
4487 #[gpui::test]
4488 fn test_newline(cx: &mut gpui::MutableAppContext) {
4489 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
4490 let settings = EditorSettings::test(&cx);
4491 let (_, view) = cx.add_window(Default::default(), |cx| {
4492 build_editor(buffer.clone(), settings, cx)
4493 });
4494
4495 view.update(cx, |view, cx| {
4496 view.select_display_ranges(
4497 &[
4498 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4499 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
4500 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
4501 ],
4502 cx,
4503 )
4504 .unwrap();
4505
4506 view.newline(&Newline, cx);
4507 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
4508 });
4509 }
4510
4511 #[gpui::test]
4512 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
4513 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
4514 let settings = EditorSettings::test(&cx);
4515 let (_, view) = cx.add_window(Default::default(), |cx| {
4516 build_editor(buffer.clone(), settings, cx)
4517 });
4518
4519 view.update(cx, |view, cx| {
4520 // two selections on the same line
4521 view.select_display_ranges(
4522 &[
4523 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
4524 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
4525 ],
4526 cx,
4527 )
4528 .unwrap();
4529
4530 // indent from mid-tabstop to full tabstop
4531 view.tab(&Tab, cx);
4532 assert_eq!(view.text(cx), " one two\nthree\n four");
4533 assert_eq!(
4534 view.selection_ranges(cx),
4535 &[
4536 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
4537 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
4538 ]
4539 );
4540
4541 // outdent from 1 tabstop to 0 tabstops
4542 view.outdent(&Outdent, cx);
4543 assert_eq!(view.text(cx), "one two\nthree\n four");
4544 assert_eq!(
4545 view.selection_ranges(cx),
4546 &[
4547 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
4548 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
4549 ]
4550 );
4551
4552 // select across line ending
4553 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx)
4554 .unwrap();
4555
4556 // indent and outdent affect only the preceding line
4557 view.tab(&Tab, cx);
4558 assert_eq!(view.text(cx), "one two\n three\n four");
4559 assert_eq!(
4560 view.selection_ranges(cx),
4561 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
4562 );
4563 view.outdent(&Outdent, cx);
4564 assert_eq!(view.text(cx), "one two\nthree\n four");
4565 assert_eq!(
4566 view.selection_ranges(cx),
4567 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
4568 );
4569 });
4570 }
4571
4572 #[gpui::test]
4573 fn test_backspace(cx: &mut gpui::MutableAppContext) {
4574 let buffer =
4575 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
4576 let settings = EditorSettings::test(&cx);
4577 let (_, view) = cx.add_window(Default::default(), |cx| {
4578 build_editor(buffer.clone(), settings, cx)
4579 });
4580
4581 view.update(cx, |view, cx| {
4582 view.select_display_ranges(
4583 &[
4584 // an empty selection - the preceding character is deleted
4585 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4586 // one character selected - it is deleted
4587 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
4588 // a line suffix selected - it is deleted
4589 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
4590 ],
4591 cx,
4592 )
4593 .unwrap();
4594 view.backspace(&Backspace, cx);
4595 });
4596
4597 assert_eq!(
4598 buffer.read(cx).text(),
4599 "oe two three\nfou five six\nseven ten\n"
4600 );
4601 }
4602
4603 #[gpui::test]
4604 fn test_delete(cx: &mut gpui::MutableAppContext) {
4605 let buffer =
4606 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
4607 let settings = EditorSettings::test(&cx);
4608 let (_, view) = cx.add_window(Default::default(), |cx| {
4609 build_editor(buffer.clone(), settings, cx)
4610 });
4611
4612 view.update(cx, |view, cx| {
4613 view.select_display_ranges(
4614 &[
4615 // an empty selection - the following character is deleted
4616 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4617 // one character selected - it is deleted
4618 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
4619 // a line suffix selected - it is deleted
4620 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
4621 ],
4622 cx,
4623 )
4624 .unwrap();
4625 view.delete(&Delete, cx);
4626 });
4627
4628 assert_eq!(
4629 buffer.read(cx).text(),
4630 "on two three\nfou five six\nseven ten\n"
4631 );
4632 }
4633
4634 #[gpui::test]
4635 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
4636 let settings = EditorSettings::test(&cx);
4637 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
4638 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4639 view.update(cx, |view, cx| {
4640 view.select_display_ranges(
4641 &[
4642 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4643 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
4644 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
4645 ],
4646 cx,
4647 )
4648 .unwrap();
4649 view.delete_line(&DeleteLine, cx);
4650 assert_eq!(view.display_text(cx), "ghi");
4651 assert_eq!(
4652 view.selection_ranges(cx),
4653 vec![
4654 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4655 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
4656 ]
4657 );
4658 });
4659
4660 let settings = EditorSettings::test(&cx);
4661 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
4662 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4663 view.update(cx, |view, cx| {
4664 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx)
4665 .unwrap();
4666 view.delete_line(&DeleteLine, cx);
4667 assert_eq!(view.display_text(cx), "ghi\n");
4668 assert_eq!(
4669 view.selection_ranges(cx),
4670 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
4671 );
4672 });
4673 }
4674
4675 #[gpui::test]
4676 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
4677 let settings = EditorSettings::test(&cx);
4678 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
4679 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4680 view.update(cx, |view, cx| {
4681 view.select_display_ranges(
4682 &[
4683 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
4684 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4685 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4686 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
4687 ],
4688 cx,
4689 )
4690 .unwrap();
4691 view.duplicate_line(&DuplicateLine, cx);
4692 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
4693 assert_eq!(
4694 view.selection_ranges(cx),
4695 vec![
4696 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
4697 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
4698 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
4699 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
4700 ]
4701 );
4702 });
4703
4704 let settings = EditorSettings::test(&cx);
4705 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
4706 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4707 view.update(cx, |view, cx| {
4708 view.select_display_ranges(
4709 &[
4710 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
4711 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
4712 ],
4713 cx,
4714 )
4715 .unwrap();
4716 view.duplicate_line(&DuplicateLine, cx);
4717 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
4718 assert_eq!(
4719 view.selection_ranges(cx),
4720 vec![
4721 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
4722 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
4723 ]
4724 );
4725 });
4726 }
4727
4728 #[gpui::test]
4729 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
4730 let settings = EditorSettings::test(&cx);
4731 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
4732 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4733 view.update(cx, |view, cx| {
4734 view.fold_ranges(
4735 vec![
4736 Point::new(0, 2)..Point::new(1, 2),
4737 Point::new(2, 3)..Point::new(4, 1),
4738 Point::new(7, 0)..Point::new(8, 4),
4739 ],
4740 cx,
4741 );
4742 view.select_display_ranges(
4743 &[
4744 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4745 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
4746 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
4747 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
4748 ],
4749 cx,
4750 )
4751 .unwrap();
4752 assert_eq!(
4753 view.display_text(cx),
4754 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
4755 );
4756
4757 view.move_line_up(&MoveLineUp, cx);
4758 assert_eq!(
4759 view.display_text(cx),
4760 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
4761 );
4762 assert_eq!(
4763 view.selection_ranges(cx),
4764 vec![
4765 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4766 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4767 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
4768 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
4769 ]
4770 );
4771 });
4772
4773 view.update(cx, |view, cx| {
4774 view.move_line_down(&MoveLineDown, cx);
4775 assert_eq!(
4776 view.display_text(cx),
4777 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
4778 );
4779 assert_eq!(
4780 view.selection_ranges(cx),
4781 vec![
4782 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
4783 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
4784 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
4785 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
4786 ]
4787 );
4788 });
4789
4790 view.update(cx, |view, cx| {
4791 view.move_line_down(&MoveLineDown, cx);
4792 assert_eq!(
4793 view.display_text(cx),
4794 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
4795 );
4796 assert_eq!(
4797 view.selection_ranges(cx),
4798 vec![
4799 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4800 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
4801 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
4802 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
4803 ]
4804 );
4805 });
4806
4807 view.update(cx, |view, cx| {
4808 view.move_line_up(&MoveLineUp, cx);
4809 assert_eq!(
4810 view.display_text(cx),
4811 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
4812 );
4813 assert_eq!(
4814 view.selection_ranges(cx),
4815 vec![
4816 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
4817 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4818 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
4819 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
4820 ]
4821 );
4822 });
4823 }
4824
4825 #[gpui::test]
4826 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
4827 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
4828 let settings = EditorSettings::test(&cx);
4829 let view = cx
4830 .add_window(Default::default(), |cx| {
4831 build_editor(buffer.clone(), settings, cx)
4832 })
4833 .1;
4834
4835 // Cut with three selections. Clipboard text is divided into three slices.
4836 view.update(cx, |view, cx| {
4837 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
4838 view.cut(&Cut, cx);
4839 assert_eq!(view.display_text(cx), "two four six ");
4840 });
4841
4842 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
4843 view.update(cx, |view, cx| {
4844 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
4845 view.paste(&Paste, cx);
4846 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
4847 assert_eq!(
4848 view.selection_ranges(cx),
4849 &[
4850 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
4851 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
4852 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
4853 ]
4854 );
4855 });
4856
4857 // Paste again but with only two cursors. Since the number of cursors doesn't
4858 // match the number of slices in the clipboard, the entire clipboard text
4859 // is pasted at each cursor.
4860 view.update(cx, |view, cx| {
4861 view.select_ranges(vec![0..0, 31..31], None, cx);
4862 view.handle_input(&Input("( ".into()), cx);
4863 view.paste(&Paste, cx);
4864 view.handle_input(&Input(") ".into()), cx);
4865 assert_eq!(
4866 view.display_text(cx),
4867 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
4868 );
4869 });
4870
4871 view.update(cx, |view, cx| {
4872 view.select_ranges(vec![0..0], None, cx);
4873 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
4874 assert_eq!(
4875 view.display_text(cx),
4876 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
4877 );
4878 });
4879
4880 // Cut with three selections, one of which is full-line.
4881 view.update(cx, |view, cx| {
4882 view.select_display_ranges(
4883 &[
4884 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
4885 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
4886 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
4887 ],
4888 cx,
4889 )
4890 .unwrap();
4891 view.cut(&Cut, cx);
4892 assert_eq!(
4893 view.display_text(cx),
4894 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
4895 );
4896 });
4897
4898 // Paste with three selections, noticing how the copied selection that was full-line
4899 // gets inserted before the second cursor.
4900 view.update(cx, |view, cx| {
4901 view.select_display_ranges(
4902 &[
4903 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4904 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
4905 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
4906 ],
4907 cx,
4908 )
4909 .unwrap();
4910 view.paste(&Paste, cx);
4911 assert_eq!(
4912 view.display_text(cx),
4913 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
4914 );
4915 assert_eq!(
4916 view.selection_ranges(cx),
4917 &[
4918 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4919 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4920 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
4921 ]
4922 );
4923 });
4924
4925 // Copy with a single cursor only, which writes the whole line into the clipboard.
4926 view.update(cx, |view, cx| {
4927 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx)
4928 .unwrap();
4929 view.copy(&Copy, cx);
4930 });
4931
4932 // Paste with three selections, noticing how the copied full-line selection is inserted
4933 // before the empty selections but replaces the selection that is non-empty.
4934 view.update(cx, |view, cx| {
4935 view.select_display_ranges(
4936 &[
4937 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4938 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
4939 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4940 ],
4941 cx,
4942 )
4943 .unwrap();
4944 view.paste(&Paste, cx);
4945 assert_eq!(
4946 view.display_text(cx),
4947 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
4948 );
4949 assert_eq!(
4950 view.selection_ranges(cx),
4951 &[
4952 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
4953 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
4954 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
4955 ]
4956 );
4957 });
4958 }
4959
4960 #[gpui::test]
4961 fn test_select_all(cx: &mut gpui::MutableAppContext) {
4962 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
4963 let settings = EditorSettings::test(&cx);
4964 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4965 view.update(cx, |view, cx| {
4966 view.select_all(&SelectAll, cx);
4967 assert_eq!(
4968 view.selection_ranges(cx),
4969 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
4970 );
4971 });
4972 }
4973
4974 #[gpui::test]
4975 fn test_select_line(cx: &mut gpui::MutableAppContext) {
4976 let settings = EditorSettings::test(&cx);
4977 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
4978 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4979 view.update(cx, |view, cx| {
4980 view.select_display_ranges(
4981 &[
4982 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
4983 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4984 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4985 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
4986 ],
4987 cx,
4988 )
4989 .unwrap();
4990 view.select_line(&SelectLine, cx);
4991 assert_eq!(
4992 view.selection_ranges(cx),
4993 vec![
4994 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
4995 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
4996 ]
4997 );
4998 });
4999
5000 view.update(cx, |view, cx| {
5001 view.select_line(&SelectLine, cx);
5002 assert_eq!(
5003 view.selection_ranges(cx),
5004 vec![
5005 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
5006 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
5007 ]
5008 );
5009 });
5010
5011 view.update(cx, |view, cx| {
5012 view.select_line(&SelectLine, cx);
5013 assert_eq!(
5014 view.selection_ranges(cx),
5015 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
5016 );
5017 });
5018 }
5019
5020 #[gpui::test]
5021 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
5022 let settings = EditorSettings::test(&cx);
5023 let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
5024 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5025 view.update(cx, |view, cx| {
5026 view.fold_ranges(
5027 vec![
5028 Point::new(0, 2)..Point::new(1, 2),
5029 Point::new(2, 3)..Point::new(4, 1),
5030 Point::new(7, 0)..Point::new(8, 4),
5031 ],
5032 cx,
5033 );
5034 view.select_display_ranges(
5035 &[
5036 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
5037 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5038 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5039 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
5040 ],
5041 cx,
5042 )
5043 .unwrap();
5044 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
5045 });
5046
5047 view.update(cx, |view, cx| {
5048 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
5049 assert_eq!(
5050 view.display_text(cx),
5051 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
5052 );
5053 assert_eq!(
5054 view.selection_ranges(cx),
5055 [
5056 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5057 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5058 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
5059 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
5060 ]
5061 );
5062 });
5063
5064 view.update(cx, |view, cx| {
5065 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx)
5066 .unwrap();
5067 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
5068 assert_eq!(
5069 view.display_text(cx),
5070 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
5071 );
5072 assert_eq!(
5073 view.selection_ranges(cx),
5074 [
5075 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
5076 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
5077 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
5078 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
5079 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
5080 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
5081 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
5082 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
5083 ]
5084 );
5085 });
5086 }
5087
5088 #[gpui::test]
5089 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
5090 let settings = EditorSettings::test(&cx);
5091 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
5092 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5093
5094 view.update(cx, |view, cx| {
5095 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx)
5096 .unwrap();
5097 });
5098 view.update(cx, |view, cx| {
5099 view.add_selection_above(&AddSelectionAbove, cx);
5100 assert_eq!(
5101 view.selection_ranges(cx),
5102 vec![
5103 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5104 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
5105 ]
5106 );
5107 });
5108
5109 view.update(cx, |view, cx| {
5110 view.add_selection_above(&AddSelectionAbove, cx);
5111 assert_eq!(
5112 view.selection_ranges(cx),
5113 vec![
5114 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5115 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
5116 ]
5117 );
5118 });
5119
5120 view.update(cx, |view, cx| {
5121 view.add_selection_below(&AddSelectionBelow, cx);
5122 assert_eq!(
5123 view.selection_ranges(cx),
5124 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
5125 );
5126 });
5127
5128 view.update(cx, |view, cx| {
5129 view.add_selection_below(&AddSelectionBelow, cx);
5130 assert_eq!(
5131 view.selection_ranges(cx),
5132 vec![
5133 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
5134 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
5135 ]
5136 );
5137 });
5138
5139 view.update(cx, |view, cx| {
5140 view.add_selection_below(&AddSelectionBelow, cx);
5141 assert_eq!(
5142 view.selection_ranges(cx),
5143 vec![
5144 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
5145 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
5146 ]
5147 );
5148 });
5149
5150 view.update(cx, |view, cx| {
5151 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx)
5152 .unwrap();
5153 });
5154 view.update(cx, |view, cx| {
5155 view.add_selection_below(&AddSelectionBelow, cx);
5156 assert_eq!(
5157 view.selection_ranges(cx),
5158 vec![
5159 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
5160 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
5161 ]
5162 );
5163 });
5164
5165 view.update(cx, |view, cx| {
5166 view.add_selection_below(&AddSelectionBelow, cx);
5167 assert_eq!(
5168 view.selection_ranges(cx),
5169 vec![
5170 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
5171 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
5172 ]
5173 );
5174 });
5175
5176 view.update(cx, |view, cx| {
5177 view.add_selection_above(&AddSelectionAbove, cx);
5178 assert_eq!(
5179 view.selection_ranges(cx),
5180 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
5181 );
5182 });
5183
5184 view.update(cx, |view, cx| {
5185 view.add_selection_above(&AddSelectionAbove, cx);
5186 assert_eq!(
5187 view.selection_ranges(cx),
5188 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
5189 );
5190 });
5191
5192 view.update(cx, |view, cx| {
5193 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx)
5194 .unwrap();
5195 view.add_selection_below(&AddSelectionBelow, cx);
5196 assert_eq!(
5197 view.selection_ranges(cx),
5198 vec![
5199 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5200 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
5201 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
5202 ]
5203 );
5204 });
5205
5206 view.update(cx, |view, cx| {
5207 view.add_selection_below(&AddSelectionBelow, cx);
5208 assert_eq!(
5209 view.selection_ranges(cx),
5210 vec![
5211 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5212 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
5213 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
5214 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
5215 ]
5216 );
5217 });
5218
5219 view.update(cx, |view, cx| {
5220 view.add_selection_above(&AddSelectionAbove, cx);
5221 assert_eq!(
5222 view.selection_ranges(cx),
5223 vec![
5224 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5225 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
5226 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
5227 ]
5228 );
5229 });
5230
5231 view.update(cx, |view, cx| {
5232 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx)
5233 .unwrap();
5234 });
5235 view.update(cx, |view, cx| {
5236 view.add_selection_above(&AddSelectionAbove, cx);
5237 assert_eq!(
5238 view.selection_ranges(cx),
5239 vec![
5240 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
5241 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
5242 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
5243 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
5244 ]
5245 );
5246 });
5247
5248 view.update(cx, |view, cx| {
5249 view.add_selection_below(&AddSelectionBelow, cx);
5250 assert_eq!(
5251 view.selection_ranges(cx),
5252 vec![
5253 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
5254 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
5255 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
5256 ]
5257 );
5258 });
5259 }
5260
5261 #[gpui::test]
5262 async fn test_select_larger_smaller_syntax_node(mut cx: gpui::TestAppContext) {
5263 let settings = cx.read(EditorSettings::test);
5264 let language = Some(Arc::new(Language::new(
5265 LanguageConfig::default(),
5266 Some(tree_sitter_rust::language()),
5267 )));
5268
5269 let text = r#"
5270 use mod1::mod2::{mod3, mod4};
5271
5272 fn fn_1(param1: bool, param2: &str) {
5273 let var1 = "text";
5274 }
5275 "#
5276 .unindent();
5277
5278 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
5279 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5280 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
5281 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
5282 .await;
5283
5284 view.update(&mut cx, |view, cx| {
5285 view.select_display_ranges(
5286 &[
5287 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
5288 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
5289 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
5290 ],
5291 cx,
5292 )
5293 .unwrap();
5294 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5295 });
5296 assert_eq!(
5297 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
5298 &[
5299 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
5300 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
5301 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
5302 ]
5303 );
5304
5305 view.update(&mut cx, |view, cx| {
5306 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5307 });
5308 assert_eq!(
5309 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
5310 &[
5311 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
5312 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
5313 ]
5314 );
5315
5316 view.update(&mut cx, |view, cx| {
5317 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5318 });
5319 assert_eq!(
5320 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
5321 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
5322 );
5323
5324 // Trying to expand the selected syntax node one more time has no effect.
5325 view.update(&mut cx, |view, cx| {
5326 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5327 });
5328 assert_eq!(
5329 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
5330 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
5331 );
5332
5333 view.update(&mut cx, |view, cx| {
5334 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
5335 });
5336 assert_eq!(
5337 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
5338 &[
5339 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
5340 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
5341 ]
5342 );
5343
5344 view.update(&mut cx, |view, cx| {
5345 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
5346 });
5347 assert_eq!(
5348 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
5349 &[
5350 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
5351 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
5352 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
5353 ]
5354 );
5355
5356 view.update(&mut cx, |view, cx| {
5357 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
5358 });
5359 assert_eq!(
5360 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
5361 &[
5362 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
5363 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
5364 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
5365 ]
5366 );
5367
5368 // Trying to shrink the selected syntax node one more time has no effect.
5369 view.update(&mut cx, |view, cx| {
5370 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
5371 });
5372 assert_eq!(
5373 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
5374 &[
5375 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
5376 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
5377 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
5378 ]
5379 );
5380
5381 // Ensure that we keep expanding the selection if the larger selection starts or ends within
5382 // a fold.
5383 view.update(&mut cx, |view, cx| {
5384 view.fold_ranges(
5385 vec![
5386 Point::new(0, 21)..Point::new(0, 24),
5387 Point::new(3, 20)..Point::new(3, 22),
5388 ],
5389 cx,
5390 );
5391 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5392 });
5393 assert_eq!(
5394 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
5395 &[
5396 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
5397 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
5398 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
5399 ]
5400 );
5401 }
5402
5403 #[gpui::test]
5404 async fn test_autoclose_pairs(mut cx: gpui::TestAppContext) {
5405 let settings = cx.read(EditorSettings::test);
5406 let language = Some(Arc::new(Language::new(
5407 LanguageConfig {
5408 brackets: vec![
5409 BracketPair {
5410 start: "{".to_string(),
5411 end: "}".to_string(),
5412 close: true,
5413 newline: true,
5414 },
5415 BracketPair {
5416 start: "/*".to_string(),
5417 end: " */".to_string(),
5418 close: true,
5419 newline: true,
5420 },
5421 ],
5422 ..Default::default()
5423 },
5424 Some(tree_sitter_rust::language()),
5425 )));
5426
5427 let text = r#"
5428 a
5429
5430 /
5431
5432 "#
5433 .unindent();
5434
5435 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
5436 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5437 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
5438 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
5439 .await;
5440
5441 view.update(&mut cx, |view, cx| {
5442 view.select_display_ranges(
5443 &[
5444 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
5445 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5446 ],
5447 cx,
5448 )
5449 .unwrap();
5450 view.handle_input(&Input("{".to_string()), cx);
5451 view.handle_input(&Input("{".to_string()), cx);
5452 view.handle_input(&Input("{".to_string()), cx);
5453 assert_eq!(
5454 view.text(cx),
5455 "
5456 {{{}}}
5457 {{{}}}
5458 /
5459
5460 "
5461 .unindent()
5462 );
5463
5464 view.move_right(&MoveRight, cx);
5465 view.handle_input(&Input("}".to_string()), cx);
5466 view.handle_input(&Input("}".to_string()), cx);
5467 view.handle_input(&Input("}".to_string()), cx);
5468 assert_eq!(
5469 view.text(cx),
5470 "
5471 {{{}}}}
5472 {{{}}}}
5473 /
5474
5475 "
5476 .unindent()
5477 );
5478
5479 view.undo(&Undo, cx);
5480 view.handle_input(&Input("/".to_string()), cx);
5481 view.handle_input(&Input("*".to_string()), cx);
5482 assert_eq!(
5483 view.text(cx),
5484 "
5485 /* */
5486 /* */
5487 /
5488
5489 "
5490 .unindent()
5491 );
5492
5493 view.undo(&Undo, cx);
5494 view.select_display_ranges(
5495 &[
5496 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5497 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5498 ],
5499 cx,
5500 )
5501 .unwrap();
5502 view.handle_input(&Input("*".to_string()), cx);
5503 assert_eq!(
5504 view.text(cx),
5505 "
5506 a
5507
5508 /*
5509 *
5510 "
5511 .unindent()
5512 );
5513 });
5514 }
5515
5516 #[gpui::test]
5517 async fn test_toggle_comment(mut cx: gpui::TestAppContext) {
5518 let settings = cx.read(EditorSettings::test);
5519 let language = Some(Arc::new(Language::new(
5520 LanguageConfig {
5521 line_comment: Some("// ".to_string()),
5522 ..Default::default()
5523 },
5524 Some(tree_sitter_rust::language()),
5525 )));
5526
5527 let text = "
5528 fn a() {
5529 //b();
5530 // c();
5531 // d();
5532 }
5533 "
5534 .unindent();
5535
5536 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
5537 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5538 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
5539
5540 view.update(&mut cx, |editor, cx| {
5541 // If multiple selections intersect a line, the line is only
5542 // toggled once.
5543 editor
5544 .select_display_ranges(
5545 &[
5546 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
5547 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
5548 ],
5549 cx,
5550 )
5551 .unwrap();
5552 editor.toggle_comments(&ToggleComments, cx);
5553 assert_eq!(
5554 editor.text(cx),
5555 "
5556 fn a() {
5557 b();
5558 c();
5559 d();
5560 }
5561 "
5562 .unindent()
5563 );
5564
5565 // The comment prefix is inserted at the same column for every line
5566 // in a selection.
5567 editor
5568 .select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx)
5569 .unwrap();
5570 editor.toggle_comments(&ToggleComments, cx);
5571 assert_eq!(
5572 editor.text(cx),
5573 "
5574 fn a() {
5575 // b();
5576 // c();
5577 // d();
5578 }
5579 "
5580 .unindent()
5581 );
5582
5583 // If a selection ends at the beginning of a line, that line is not toggled.
5584 editor
5585 .select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx)
5586 .unwrap();
5587 editor.toggle_comments(&ToggleComments, cx);
5588 assert_eq!(
5589 editor.text(cx),
5590 "
5591 fn a() {
5592 // b();
5593 c();
5594 // d();
5595 }
5596 "
5597 .unindent()
5598 );
5599 });
5600 }
5601
5602 #[gpui::test]
5603 async fn test_extra_newline_insertion(mut cx: gpui::TestAppContext) {
5604 let settings = cx.read(EditorSettings::test);
5605 let language = Some(Arc::new(Language::new(
5606 LanguageConfig {
5607 brackets: vec![
5608 BracketPair {
5609 start: "{".to_string(),
5610 end: "}".to_string(),
5611 close: true,
5612 newline: true,
5613 },
5614 BracketPair {
5615 start: "/* ".to_string(),
5616 end: " */".to_string(),
5617 close: true,
5618 newline: true,
5619 },
5620 ],
5621 ..Default::default()
5622 },
5623 Some(tree_sitter_rust::language()),
5624 )));
5625
5626 let text = concat!(
5627 "{ }\n", // Suppress rustfmt
5628 " x\n", //
5629 " /* */\n", //
5630 "x\n", //
5631 "{{} }\n", //
5632 );
5633
5634 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
5635 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5636 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
5637 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
5638 .await;
5639
5640 view.update(&mut cx, |view, cx| {
5641 view.select_display_ranges(
5642 &[
5643 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
5644 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
5645 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
5646 ],
5647 cx,
5648 )
5649 .unwrap();
5650 view.newline(&Newline, cx);
5651
5652 assert_eq!(
5653 view.buffer().read(cx).text(),
5654 concat!(
5655 "{ \n", // Suppress rustfmt
5656 "\n", //
5657 "}\n", //
5658 " x\n", //
5659 " /* \n", //
5660 " \n", //
5661 " */\n", //
5662 "x\n", //
5663 "{{} \n", //
5664 "}\n", //
5665 )
5666 );
5667 });
5668 }
5669
5670 impl Editor {
5671 fn selection_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
5672 self.intersecting_selections(
5673 self.selection_set_id,
5674 DisplayPoint::zero()..self.max_point(cx),
5675 cx,
5676 )
5677 .into_iter()
5678 .map(|s| {
5679 if s.reversed {
5680 s.end..s.start
5681 } else {
5682 s.start..s.end
5683 }
5684 })
5685 .collect()
5686 }
5687 }
5688
5689 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
5690 let point = DisplayPoint::new(row as u32, column as u32);
5691 point..point
5692 }
5693
5694 fn build_editor(
5695 buffer: ModelHandle<MultiBuffer>,
5696 settings: EditorSettings,
5697 cx: &mut ViewContext<Editor>,
5698 ) -> Editor {
5699 Editor::for_buffer(buffer, move |_| settings.clone(), cx)
5700 }
5701}
5702
5703trait RangeExt<T> {
5704 fn sorted(&self) -> Range<T>;
5705 fn to_inclusive(&self) -> RangeInclusive<T>;
5706}
5707
5708impl<T: Ord + Clone> RangeExt<T> for Range<T> {
5709 fn sorted(&self) -> Self {
5710 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
5711 }
5712
5713 fn to_inclusive(&self) -> RangeInclusive<T> {
5714 self.start.clone()..=self.end.clone()
5715 }
5716}