1pub mod display_map;
2mod element;
3pub mod items;
4pub mod movement;
5mod multi_buffer;
6
7#[cfg(test)]
8mod test;
9
10use aho_corasick::AhoCorasick;
11use clock::ReplicaId;
12use collections::{HashMap, HashSet};
13pub use display_map::DisplayPoint;
14use display_map::*;
15pub use element::*;
16use gpui::{
17 action,
18 elements::*,
19 fonts::TextStyle,
20 geometry::vector::{vec2f, Vector2F},
21 keymap::Binding,
22 text_layout, AppContext, ClipboardItem, Element, ElementBox, Entity, ModelHandle,
23 MutableAppContext, RenderContext, View, ViewContext, WeakModelHandle, WeakViewHandle,
24};
25use items::BufferItemHandle;
26use itertools::Itertools as _;
27use language::{
28 BracketPair, Buffer, Diagnostic, DiagnosticSeverity, Language, Point, Selection, SelectionGoal,
29 TransactionId,
30};
31pub use multi_buffer::{Anchor, ExcerptId, ExcerptProperties, MultiBuffer};
32use multi_buffer::{AnchorRangeExt, MultiBufferChunks, MultiBufferSnapshot, ToOffset, ToPoint};
33use postage::watch;
34use serde::{Deserialize, Serialize};
35use smallvec::SmallVec;
36use smol::Timer;
37use std::{
38 cmp,
39 iter::{self, FromIterator},
40 mem,
41 ops::{Deref, Range, RangeInclusive, Sub},
42 sync::Arc,
43 time::{Duration, Instant},
44};
45use sum_tree::Bias;
46use text::rope::TextDimension;
47use theme::{DiagnosticStyle, EditorStyle};
48use util::post_inc;
49use workspace::{EntryOpener, Workspace};
50
51const CURSOR_BLINK_INTERVAL: Duration = Duration::from_millis(500);
52const MAX_LINE_LEN: usize = 1024;
53
54action!(Cancel);
55action!(Backspace);
56action!(Delete);
57action!(Input, String);
58action!(Newline);
59action!(Tab);
60action!(Outdent);
61action!(DeleteLine);
62action!(DeleteToPreviousWordBoundary);
63action!(DeleteToNextWordBoundary);
64action!(DeleteToBeginningOfLine);
65action!(DeleteToEndOfLine);
66action!(CutToEndOfLine);
67action!(DuplicateLine);
68action!(MoveLineUp);
69action!(MoveLineDown);
70action!(Cut);
71action!(Copy);
72action!(Paste);
73action!(Undo);
74action!(Redo);
75action!(MoveUp);
76action!(MoveDown);
77action!(MoveLeft);
78action!(MoveRight);
79action!(MoveToPreviousWordBoundary);
80action!(MoveToNextWordBoundary);
81action!(MoveToBeginningOfLine);
82action!(MoveToEndOfLine);
83action!(MoveToBeginning);
84action!(MoveToEnd);
85action!(SelectUp);
86action!(SelectDown);
87action!(SelectLeft);
88action!(SelectRight);
89action!(SelectToPreviousWordBoundary);
90action!(SelectToNextWordBoundary);
91action!(SelectToBeginningOfLine, bool);
92action!(SelectToEndOfLine);
93action!(SelectToBeginning);
94action!(SelectToEnd);
95action!(SelectAll);
96action!(SelectLine);
97action!(SplitSelectionIntoLines);
98action!(AddSelectionAbove);
99action!(AddSelectionBelow);
100action!(SelectNext, bool);
101action!(ToggleComments);
102action!(SelectLargerSyntaxNode);
103action!(SelectSmallerSyntaxNode);
104action!(MoveToEnclosingBracket);
105action!(ShowNextDiagnostic);
106action!(PageUp);
107action!(PageDown);
108action!(Fold);
109action!(Unfold);
110action!(FoldSelectedRanges);
111action!(Scroll, Vector2F);
112action!(Select, SelectPhase);
113
114pub fn init(cx: &mut MutableAppContext, entry_openers: &mut Vec<Box<dyn EntryOpener>>) {
115 entry_openers.push(Box::new(items::BufferOpener));
116 cx.add_bindings(vec![
117 Binding::new("escape", Cancel, Some("Editor")),
118 Binding::new("backspace", Backspace, Some("Editor")),
119 Binding::new("ctrl-h", Backspace, Some("Editor")),
120 Binding::new("delete", Delete, Some("Editor")),
121 Binding::new("ctrl-d", Delete, Some("Editor")),
122 Binding::new("enter", Newline, Some("Editor && mode == full")),
123 Binding::new(
124 "alt-enter",
125 Input("\n".into()),
126 Some("Editor && mode == auto_height"),
127 ),
128 Binding::new("tab", Tab, Some("Editor")),
129 Binding::new("shift-tab", Outdent, Some("Editor")),
130 Binding::new("ctrl-shift-K", DeleteLine, Some("Editor")),
131 Binding::new(
132 "alt-backspace",
133 DeleteToPreviousWordBoundary,
134 Some("Editor"),
135 ),
136 Binding::new("alt-h", DeleteToPreviousWordBoundary, Some("Editor")),
137 Binding::new("alt-delete", DeleteToNextWordBoundary, Some("Editor")),
138 Binding::new("alt-d", DeleteToNextWordBoundary, Some("Editor")),
139 Binding::new("cmd-backspace", DeleteToBeginningOfLine, Some("Editor")),
140 Binding::new("cmd-delete", DeleteToEndOfLine, Some("Editor")),
141 Binding::new("ctrl-k", CutToEndOfLine, Some("Editor")),
142 Binding::new("cmd-shift-D", DuplicateLine, Some("Editor")),
143 Binding::new("ctrl-cmd-up", MoveLineUp, Some("Editor")),
144 Binding::new("ctrl-cmd-down", MoveLineDown, Some("Editor")),
145 Binding::new("cmd-x", Cut, Some("Editor")),
146 Binding::new("cmd-c", Copy, Some("Editor")),
147 Binding::new("cmd-v", Paste, Some("Editor")),
148 Binding::new("cmd-z", Undo, Some("Editor")),
149 Binding::new("cmd-shift-Z", Redo, Some("Editor")),
150 Binding::new("up", MoveUp, Some("Editor")),
151 Binding::new("down", MoveDown, Some("Editor")),
152 Binding::new("left", MoveLeft, Some("Editor")),
153 Binding::new("right", MoveRight, Some("Editor")),
154 Binding::new("ctrl-p", MoveUp, Some("Editor")),
155 Binding::new("ctrl-n", MoveDown, Some("Editor")),
156 Binding::new("ctrl-b", MoveLeft, Some("Editor")),
157 Binding::new("ctrl-f", MoveRight, Some("Editor")),
158 Binding::new("alt-left", MoveToPreviousWordBoundary, Some("Editor")),
159 Binding::new("alt-b", MoveToPreviousWordBoundary, Some("Editor")),
160 Binding::new("alt-right", MoveToNextWordBoundary, Some("Editor")),
161 Binding::new("alt-f", MoveToNextWordBoundary, Some("Editor")),
162 Binding::new("cmd-left", MoveToBeginningOfLine, Some("Editor")),
163 Binding::new("ctrl-a", MoveToBeginningOfLine, Some("Editor")),
164 Binding::new("cmd-right", MoveToEndOfLine, Some("Editor")),
165 Binding::new("ctrl-e", MoveToEndOfLine, Some("Editor")),
166 Binding::new("cmd-up", MoveToBeginning, Some("Editor")),
167 Binding::new("cmd-down", MoveToEnd, Some("Editor")),
168 Binding::new("shift-up", SelectUp, Some("Editor")),
169 Binding::new("ctrl-shift-P", SelectUp, Some("Editor")),
170 Binding::new("shift-down", SelectDown, Some("Editor")),
171 Binding::new("ctrl-shift-N", SelectDown, Some("Editor")),
172 Binding::new("shift-left", SelectLeft, Some("Editor")),
173 Binding::new("ctrl-shift-B", SelectLeft, Some("Editor")),
174 Binding::new("shift-right", SelectRight, Some("Editor")),
175 Binding::new("ctrl-shift-F", SelectRight, Some("Editor")),
176 Binding::new(
177 "alt-shift-left",
178 SelectToPreviousWordBoundary,
179 Some("Editor"),
180 ),
181 Binding::new("alt-shift-B", SelectToPreviousWordBoundary, Some("Editor")),
182 Binding::new("alt-shift-right", SelectToNextWordBoundary, Some("Editor")),
183 Binding::new("alt-shift-F", SelectToNextWordBoundary, Some("Editor")),
184 Binding::new(
185 "cmd-shift-left",
186 SelectToBeginningOfLine(true),
187 Some("Editor"),
188 ),
189 Binding::new(
190 "ctrl-shift-A",
191 SelectToBeginningOfLine(true),
192 Some("Editor"),
193 ),
194 Binding::new("cmd-shift-right", SelectToEndOfLine, Some("Editor")),
195 Binding::new("ctrl-shift-E", SelectToEndOfLine, Some("Editor")),
196 Binding::new("cmd-shift-up", SelectToBeginning, Some("Editor")),
197 Binding::new("cmd-shift-down", SelectToEnd, Some("Editor")),
198 Binding::new("cmd-a", SelectAll, Some("Editor")),
199 Binding::new("cmd-l", SelectLine, Some("Editor")),
200 Binding::new("cmd-shift-L", SplitSelectionIntoLines, Some("Editor")),
201 Binding::new("cmd-alt-up", AddSelectionAbove, Some("Editor")),
202 Binding::new("cmd-ctrl-p", AddSelectionAbove, Some("Editor")),
203 Binding::new("cmd-alt-down", AddSelectionBelow, Some("Editor")),
204 Binding::new("cmd-ctrl-n", AddSelectionBelow, Some("Editor")),
205 Binding::new("cmd-d", SelectNext(false), Some("Editor")),
206 Binding::new("cmd-k cmd-d", SelectNext(true), Some("Editor")),
207 Binding::new("cmd-/", ToggleComments, Some("Editor")),
208 Binding::new("alt-up", SelectLargerSyntaxNode, Some("Editor")),
209 Binding::new("ctrl-w", SelectLargerSyntaxNode, Some("Editor")),
210 Binding::new("alt-down", SelectSmallerSyntaxNode, Some("Editor")),
211 Binding::new("ctrl-shift-W", SelectSmallerSyntaxNode, Some("Editor")),
212 Binding::new("f8", ShowNextDiagnostic, Some("Editor")),
213 Binding::new("ctrl-m", MoveToEnclosingBracket, Some("Editor")),
214 Binding::new("pageup", PageUp, Some("Editor")),
215 Binding::new("pagedown", PageDown, Some("Editor")),
216 Binding::new("alt-cmd-[", Fold, Some("Editor")),
217 Binding::new("alt-cmd-]", Unfold, Some("Editor")),
218 Binding::new("alt-cmd-f", FoldSelectedRanges, Some("Editor")),
219 ]);
220
221 cx.add_action(Editor::open_new);
222 cx.add_action(|this: &mut Editor, action: &Scroll, cx| this.set_scroll_position(action.0, cx));
223 cx.add_action(Editor::select);
224 cx.add_action(Editor::cancel);
225 cx.add_action(Editor::handle_input);
226 cx.add_action(Editor::newline);
227 cx.add_action(Editor::backspace);
228 cx.add_action(Editor::delete);
229 cx.add_action(Editor::tab);
230 cx.add_action(Editor::outdent);
231 cx.add_action(Editor::delete_line);
232 cx.add_action(Editor::delete_to_previous_word_boundary);
233 cx.add_action(Editor::delete_to_next_word_boundary);
234 cx.add_action(Editor::delete_to_beginning_of_line);
235 cx.add_action(Editor::delete_to_end_of_line);
236 cx.add_action(Editor::cut_to_end_of_line);
237 cx.add_action(Editor::duplicate_line);
238 cx.add_action(Editor::move_line_up);
239 cx.add_action(Editor::move_line_down);
240 cx.add_action(Editor::cut);
241 cx.add_action(Editor::copy);
242 cx.add_action(Editor::paste);
243 cx.add_action(Editor::undo);
244 cx.add_action(Editor::redo);
245 cx.add_action(Editor::move_up);
246 cx.add_action(Editor::move_down);
247 cx.add_action(Editor::move_left);
248 cx.add_action(Editor::move_right);
249 cx.add_action(Editor::move_to_previous_word_boundary);
250 cx.add_action(Editor::move_to_next_word_boundary);
251 cx.add_action(Editor::move_to_beginning_of_line);
252 cx.add_action(Editor::move_to_end_of_line);
253 cx.add_action(Editor::move_to_beginning);
254 cx.add_action(Editor::move_to_end);
255 cx.add_action(Editor::select_up);
256 cx.add_action(Editor::select_down);
257 cx.add_action(Editor::select_left);
258 cx.add_action(Editor::select_right);
259 cx.add_action(Editor::select_to_previous_word_boundary);
260 cx.add_action(Editor::select_to_next_word_boundary);
261 cx.add_action(Editor::select_to_beginning_of_line);
262 cx.add_action(Editor::select_to_end_of_line);
263 cx.add_action(Editor::select_to_beginning);
264 cx.add_action(Editor::select_to_end);
265 cx.add_action(Editor::select_all);
266 cx.add_action(Editor::select_line);
267 cx.add_action(Editor::split_selection_into_lines);
268 cx.add_action(Editor::add_selection_above);
269 cx.add_action(Editor::add_selection_below);
270 cx.add_action(Editor::select_next);
271 cx.add_action(Editor::toggle_comments);
272 cx.add_action(Editor::select_larger_syntax_node);
273 cx.add_action(Editor::select_smaller_syntax_node);
274 cx.add_action(Editor::move_to_enclosing_bracket);
275 cx.add_action(Editor::show_next_diagnostic);
276 cx.add_action(Editor::page_up);
277 cx.add_action(Editor::page_down);
278 cx.add_action(Editor::fold);
279 cx.add_action(Editor::unfold);
280 cx.add_action(Editor::fold_selected_ranges);
281}
282
283trait SelectionExt {
284 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize>;
285 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point>;
286 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint>;
287 fn spanned_rows(
288 &self,
289 include_end_if_at_line_start: bool,
290 map: &DisplaySnapshot,
291 ) -> SpannedRows;
292}
293
294struct SpannedRows {
295 buffer_rows: Range<u32>,
296 display_rows: Range<u32>,
297}
298
299#[derive(Clone, Debug)]
300pub enum SelectPhase {
301 Begin {
302 position: DisplayPoint,
303 add: bool,
304 click_count: usize,
305 },
306 BeginColumnar {
307 position: DisplayPoint,
308 overshoot: u32,
309 },
310 Extend {
311 position: DisplayPoint,
312 click_count: usize,
313 },
314 Update {
315 position: DisplayPoint,
316 overshoot: u32,
317 scroll_position: Vector2F,
318 },
319 End,
320}
321
322#[derive(Clone, Debug)]
323enum SelectMode {
324 Character,
325 Word(Range<Anchor>),
326 Line(Range<Anchor>),
327 All,
328}
329
330#[derive(PartialEq, Eq)]
331pub enum Autoscroll {
332 Fit,
333 Center,
334 Newest,
335}
336
337#[derive(Copy, Clone, PartialEq, Eq)]
338pub enum EditorMode {
339 SingleLine,
340 AutoHeight { max_lines: usize },
341 Full,
342}
343
344#[derive(Clone)]
345pub struct EditorSettings {
346 pub tab_size: usize,
347 pub soft_wrap: SoftWrap,
348 pub style: EditorStyle,
349}
350
351#[derive(Clone)]
352pub enum SoftWrap {
353 None,
354 EditorWidth,
355 Column(u32),
356}
357
358pub type BuildSettings = Arc<dyn 'static + Send + Sync + Fn(&AppContext) -> EditorSettings>;
359
360pub struct Editor {
361 handle: WeakViewHandle<Self>,
362 buffer: ModelHandle<MultiBuffer>,
363 display_map: ModelHandle<DisplayMap>,
364 next_selection_id: usize,
365 selections: Arc<[Selection<Anchor>]>,
366 pending_selection: Option<PendingSelection>,
367 columnar_selection_tail: Option<Anchor>,
368 add_selections_state: Option<AddSelectionsState>,
369 select_next_state: Option<SelectNextState>,
370 selection_history:
371 HashMap<TransactionId, (Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)>,
372 autoclose_stack: Vec<BracketPairState>,
373 select_larger_syntax_node_stack: Vec<Box<[Selection<usize>]>>,
374 active_diagnostics: Option<ActiveDiagnosticGroup>,
375 scroll_position: Vector2F,
376 scroll_top_anchor: Anchor,
377 autoscroll_request: Option<Autoscroll>,
378 build_settings: BuildSettings,
379 focused: bool,
380 show_local_cursors: bool,
381 blink_epoch: usize,
382 blinking_paused: bool,
383 mode: EditorMode,
384 placeholder_text: Option<Arc<str>>,
385 highlighted_row: Option<u32>,
386}
387
388pub struct EditorSnapshot {
389 pub mode: EditorMode,
390 pub display_snapshot: DisplaySnapshot,
391 pub placeholder_text: Option<Arc<str>>,
392 is_focused: bool,
393 scroll_position: Vector2F,
394 scroll_top_anchor: Anchor,
395}
396
397struct PendingSelection {
398 selection: Selection<Anchor>,
399 mode: SelectMode,
400}
401
402struct AddSelectionsState {
403 above: bool,
404 stack: Vec<usize>,
405}
406
407struct SelectNextState {
408 query: AhoCorasick,
409 wordwise: bool,
410 done: bool,
411}
412
413#[derive(Debug)]
414struct BracketPairState {
415 ranges: Vec<Range<Anchor>>,
416 pair: BracketPair,
417}
418
419#[derive(Debug)]
420struct ActiveDiagnosticGroup {
421 primary_range: Range<Anchor>,
422 primary_message: String,
423 blocks: HashMap<BlockId, Diagnostic>,
424 is_valid: bool,
425}
426
427#[derive(Serialize, Deserialize)]
428struct ClipboardSelection {
429 len: usize,
430 is_entire_line: bool,
431}
432
433impl Editor {
434 pub fn single_line(build_settings: BuildSettings, cx: &mut ViewContext<Self>) -> Self {
435 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
436 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
437 let mut view = Self::for_buffer(buffer, build_settings, cx);
438 view.mode = EditorMode::SingleLine;
439 view
440 }
441
442 pub fn auto_height(
443 max_lines: usize,
444 build_settings: BuildSettings,
445 cx: &mut ViewContext<Self>,
446 ) -> Self {
447 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
448 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
449 let mut view = Self::for_buffer(buffer, build_settings, cx);
450 view.mode = EditorMode::AutoHeight { max_lines };
451 view
452 }
453
454 pub fn for_buffer(
455 buffer: ModelHandle<MultiBuffer>,
456 build_settings: BuildSettings,
457 cx: &mut ViewContext<Self>,
458 ) -> Self {
459 Self::new(buffer, build_settings, cx)
460 }
461
462 pub fn clone(&self, cx: &mut ViewContext<Self>) -> Self {
463 let mut clone = Self::new(self.buffer.clone(), self.build_settings.clone(), cx);
464 clone.scroll_position = self.scroll_position;
465 clone.scroll_top_anchor = self.scroll_top_anchor.clone();
466 clone
467 }
468
469 pub fn new(
470 buffer: ModelHandle<MultiBuffer>,
471 build_settings: BuildSettings,
472 cx: &mut ViewContext<Self>,
473 ) -> Self {
474 let settings = build_settings(cx);
475 let display_map = cx.add_model(|cx| {
476 DisplayMap::new(
477 buffer.clone(),
478 settings.tab_size,
479 settings.style.text.font_id,
480 settings.style.text.font_size,
481 None,
482 cx,
483 )
484 });
485 cx.observe(&buffer, Self::on_buffer_changed).detach();
486 cx.subscribe(&buffer, Self::on_buffer_event).detach();
487 cx.observe(&display_map, Self::on_display_map_changed)
488 .detach();
489
490 let mut next_selection_id = 0;
491 let selections = Arc::from(
492 &[Selection {
493 id: post_inc(&mut next_selection_id),
494 start: Anchor::min(),
495 end: Anchor::min(),
496 reversed: false,
497 goal: SelectionGoal::None,
498 }][..],
499 );
500
501 Self {
502 handle: cx.weak_handle(),
503 buffer,
504 display_map,
505 selections,
506 pending_selection: None,
507 columnar_selection_tail: None,
508 next_selection_id,
509 add_selections_state: None,
510 select_next_state: None,
511 selection_history: Default::default(),
512 autoclose_stack: Default::default(),
513 select_larger_syntax_node_stack: Vec::new(),
514 active_diagnostics: None,
515 build_settings,
516 scroll_position: Vector2F::zero(),
517 scroll_top_anchor: Anchor::min(),
518 autoscroll_request: None,
519 focused: false,
520 show_local_cursors: false,
521 blink_epoch: 0,
522 blinking_paused: false,
523 mode: EditorMode::Full,
524 placeholder_text: None,
525 highlighted_row: None,
526 }
527 }
528
529 pub fn open_new(
530 workspace: &mut Workspace,
531 _: &workspace::OpenNew,
532 cx: &mut ViewContext<Workspace>,
533 ) {
534 let buffer = cx.add_model(|cx| {
535 Buffer::new(0, "", cx).with_language(Some(language::PLAIN_TEXT.clone()), None, cx)
536 });
537 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
538 workspace.add_item(BufferItemHandle(buffer), cx);
539 }
540
541 pub fn replica_id(&self, cx: &AppContext) -> ReplicaId {
542 self.buffer.read(cx).replica_id()
543 }
544
545 pub fn buffer(&self) -> &ModelHandle<MultiBuffer> {
546 &self.buffer
547 }
548
549 pub fn snapshot(&mut self, cx: &mut MutableAppContext) -> EditorSnapshot {
550 EditorSnapshot {
551 mode: self.mode,
552 display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
553 scroll_position: self.scroll_position,
554 scroll_top_anchor: self.scroll_top_anchor.clone(),
555 placeholder_text: self.placeholder_text.clone(),
556 is_focused: self
557 .handle
558 .upgrade(cx)
559 .map_or(false, |handle| handle.is_focused(cx)),
560 }
561 }
562
563 pub fn language<'a>(&self, cx: &'a AppContext) -> Option<&'a Arc<Language>> {
564 self.buffer.read(cx).language(cx)
565 }
566
567 pub fn set_placeholder_text(
568 &mut self,
569 placeholder_text: impl Into<Arc<str>>,
570 cx: &mut ViewContext<Self>,
571 ) {
572 self.placeholder_text = Some(placeholder_text.into());
573 cx.notify();
574 }
575
576 pub fn set_scroll_position(&mut self, scroll_position: Vector2F, cx: &mut ViewContext<Self>) {
577 let map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
578 let scroll_top_buffer_offset =
579 DisplayPoint::new(scroll_position.y() as u32, 0).to_offset(&map, Bias::Right);
580 self.scroll_top_anchor = map
581 .buffer_snapshot
582 .anchor_at(scroll_top_buffer_offset, Bias::Right);
583 self.scroll_position = vec2f(
584 scroll_position.x(),
585 scroll_position.y() - self.scroll_top_anchor.to_display_point(&map).row() as f32,
586 );
587
588 cx.notify();
589 }
590
591 pub fn scroll_position(&self, cx: &mut ViewContext<Self>) -> Vector2F {
592 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
593 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor)
594 }
595
596 pub fn clamp_scroll_left(&mut self, max: f32) -> bool {
597 if max < self.scroll_position.x() {
598 self.scroll_position.set_x(max);
599 true
600 } else {
601 false
602 }
603 }
604
605 pub fn autoscroll_vertically(
606 &mut self,
607 viewport_height: f32,
608 line_height: f32,
609 cx: &mut ViewContext<Self>,
610 ) -> bool {
611 let visible_lines = viewport_height / line_height;
612 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
613 let mut scroll_position =
614 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor);
615 let max_scroll_top = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
616 (display_map.max_point().row() as f32 - visible_lines + 1.).max(0.)
617 } else {
618 display_map.max_point().row().saturating_sub(1) as f32
619 };
620 if scroll_position.y() > max_scroll_top {
621 scroll_position.set_y(max_scroll_top);
622 self.set_scroll_position(scroll_position, cx);
623 }
624
625 let autoscroll = if let Some(autoscroll) = self.autoscroll_request.take() {
626 autoscroll
627 } else {
628 return false;
629 };
630
631 let first_cursor_top;
632 let last_cursor_bottom;
633 if autoscroll == Autoscroll::Newest {
634 let newest_selection = self.newest_selection::<Point>(&display_map.buffer_snapshot);
635 first_cursor_top = newest_selection.head().to_display_point(&display_map).row() as f32;
636 last_cursor_bottom = first_cursor_top + 1.;
637 } else {
638 let selections = self.local_selections::<Point>(cx);
639 first_cursor_top = selections
640 .first()
641 .unwrap()
642 .head()
643 .to_display_point(&display_map)
644 .row() as f32;
645 last_cursor_bottom = selections
646 .last()
647 .unwrap()
648 .head()
649 .to_display_point(&display_map)
650 .row() as f32
651 + 1.0;
652 }
653
654 let margin = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
655 0.
656 } else {
657 ((visible_lines - (last_cursor_bottom - first_cursor_top)) / 2.0).floor()
658 };
659 if margin < 0.0 {
660 return false;
661 }
662
663 match autoscroll {
664 Autoscroll::Fit | Autoscroll::Newest => {
665 let margin = margin.min(3.0);
666 let target_top = (first_cursor_top - margin).max(0.0);
667 let target_bottom = last_cursor_bottom + margin;
668 let start_row = scroll_position.y();
669 let end_row = start_row + visible_lines;
670
671 if target_top < start_row {
672 scroll_position.set_y(target_top);
673 self.set_scroll_position(scroll_position, cx);
674 } else if target_bottom >= end_row {
675 scroll_position.set_y(target_bottom - visible_lines);
676 self.set_scroll_position(scroll_position, cx);
677 }
678 }
679 Autoscroll::Center => {
680 scroll_position.set_y((first_cursor_top - margin).max(0.0));
681 self.set_scroll_position(scroll_position, cx);
682 }
683 }
684
685 true
686 }
687
688 pub fn autoscroll_horizontally(
689 &mut self,
690 start_row: u32,
691 viewport_width: f32,
692 scroll_width: f32,
693 max_glyph_width: f32,
694 layouts: &[text_layout::Line],
695 cx: &mut ViewContext<Self>,
696 ) -> bool {
697 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
698 let selections = self.local_selections::<Point>(cx);
699 let mut target_left = std::f32::INFINITY;
700 let mut target_right = 0.0_f32;
701 for selection in selections {
702 let head = selection.head().to_display_point(&display_map);
703 if head.row() >= start_row && head.row() < start_row + layouts.len() as u32 {
704 let start_column = head.column().saturating_sub(3);
705 let end_column = cmp::min(display_map.line_len(head.row()), head.column() + 3);
706 target_left = target_left.min(
707 layouts[(head.row() - start_row) as usize].x_for_index(start_column as usize),
708 );
709 target_right = target_right.max(
710 layouts[(head.row() - start_row) as usize].x_for_index(end_column as usize)
711 + max_glyph_width,
712 );
713 }
714 }
715 target_right = target_right.min(scroll_width);
716
717 if target_right - target_left > viewport_width {
718 return false;
719 }
720
721 let scroll_left = self.scroll_position.x() * max_glyph_width;
722 let scroll_right = scroll_left + viewport_width;
723
724 if target_left < scroll_left {
725 self.scroll_position.set_x(target_left / max_glyph_width);
726 true
727 } else if target_right > scroll_right {
728 self.scroll_position
729 .set_x((target_right - viewport_width) / max_glyph_width);
730 true
731 } else {
732 false
733 }
734 }
735
736 fn select(&mut self, Select(phase): &Select, cx: &mut ViewContext<Self>) {
737 match phase {
738 SelectPhase::Begin {
739 position,
740 add,
741 click_count,
742 } => self.begin_selection(*position, *add, *click_count, cx),
743 SelectPhase::BeginColumnar {
744 position,
745 overshoot,
746 } => self.begin_columnar_selection(*position, *overshoot, cx),
747 SelectPhase::Extend {
748 position,
749 click_count,
750 } => self.extend_selection(*position, *click_count, cx),
751 SelectPhase::Update {
752 position,
753 overshoot,
754 scroll_position,
755 } => self.update_selection(*position, *overshoot, *scroll_position, cx),
756 SelectPhase::End => self.end_selection(cx),
757 }
758 }
759
760 fn extend_selection(
761 &mut self,
762 position: DisplayPoint,
763 click_count: usize,
764 cx: &mut ViewContext<Self>,
765 ) {
766 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
767 let tail = self
768 .newest_selection::<usize>(&display_map.buffer_snapshot)
769 .tail();
770 self.begin_selection(position, false, click_count, cx);
771
772 let position = position.to_offset(&display_map, Bias::Left);
773 let tail_anchor = display_map.buffer_snapshot.anchor_before(tail);
774 let pending = self.pending_selection.as_mut().unwrap();
775
776 if position >= tail {
777 pending.selection.start = tail_anchor.clone();
778 } else {
779 pending.selection.end = tail_anchor.clone();
780 pending.selection.reversed = true;
781 }
782
783 match &mut pending.mode {
784 SelectMode::Word(range) | SelectMode::Line(range) => {
785 *range = tail_anchor.clone()..tail_anchor
786 }
787 _ => {}
788 }
789 }
790
791 fn begin_selection(
792 &mut self,
793 position: DisplayPoint,
794 add: bool,
795 click_count: usize,
796 cx: &mut ViewContext<Self>,
797 ) {
798 if !self.focused {
799 cx.focus_self();
800 cx.emit(Event::Activate);
801 }
802
803 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
804 let buffer = &display_map.buffer_snapshot;
805 let start;
806 let end;
807 let mode;
808 match click_count {
809 1 => {
810 start = buffer.anchor_before(position.to_point(&display_map));
811 end = start.clone();
812 mode = SelectMode::Character;
813 }
814 2 => {
815 let range = movement::surrounding_word(&display_map, position);
816 start = buffer.anchor_before(range.start.to_point(&display_map));
817 end = buffer.anchor_before(range.end.to_point(&display_map));
818 mode = SelectMode::Word(start.clone()..end.clone());
819 }
820 3 => {
821 let position = display_map.clip_point(position, Bias::Left);
822 let line_start = movement::line_beginning(&display_map, position, false);
823 let mut next_line_start = line_start.clone();
824 *next_line_start.row_mut() += 1;
825 *next_line_start.column_mut() = 0;
826 next_line_start = display_map.clip_point(next_line_start, Bias::Right);
827
828 start = buffer.anchor_before(line_start.to_point(&display_map));
829 end = buffer.anchor_before(next_line_start.to_point(&display_map));
830 mode = SelectMode::Line(start.clone()..end.clone());
831 }
832 _ => {
833 start = buffer.anchor_before(0);
834 end = buffer.anchor_before(buffer.len());
835 mode = SelectMode::All;
836 }
837 }
838
839 let selection = Selection {
840 id: post_inc(&mut self.next_selection_id),
841 start,
842 end,
843 reversed: false,
844 goal: SelectionGoal::None,
845 };
846
847 if !add {
848 self.update_selections::<usize>(Vec::new(), None, cx);
849 } else if click_count > 1 {
850 // Remove the newest selection since it was only added as part of this multi-click.
851 let newest_selection = self.newest_selection::<usize>(buffer);
852 let mut selections = self.local_selections(cx);
853 selections.retain(|selection| selection.id != newest_selection.id);
854 self.update_selections::<usize>(selections, None, cx)
855 }
856
857 self.pending_selection = Some(PendingSelection { selection, mode });
858
859 cx.notify();
860 }
861
862 fn begin_columnar_selection(
863 &mut self,
864 position: DisplayPoint,
865 overshoot: u32,
866 cx: &mut ViewContext<Self>,
867 ) {
868 if !self.focused {
869 cx.focus_self();
870 cx.emit(Event::Activate);
871 }
872
873 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
874 let tail = self
875 .newest_selection::<Point>(&display_map.buffer_snapshot)
876 .tail();
877 self.columnar_selection_tail = Some(display_map.buffer_snapshot.anchor_before(tail));
878
879 self.select_columns(
880 tail.to_display_point(&display_map),
881 position,
882 overshoot,
883 &display_map,
884 cx,
885 );
886 }
887
888 fn update_selection(
889 &mut self,
890 position: DisplayPoint,
891 overshoot: u32,
892 scroll_position: Vector2F,
893 cx: &mut ViewContext<Self>,
894 ) {
895 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
896
897 if let Some(tail) = self.columnar_selection_tail.as_ref() {
898 let tail = tail.to_display_point(&display_map);
899 self.select_columns(tail, position, overshoot, &display_map, cx);
900 } else if let Some(PendingSelection { selection, mode }) = self.pending_selection.as_mut() {
901 let buffer = self.buffer.read(cx).snapshot(cx);
902 let head;
903 let tail;
904 match mode {
905 SelectMode::Character => {
906 head = position.to_point(&display_map);
907 tail = selection.tail().to_point(&buffer);
908 }
909 SelectMode::Word(original_range) => {
910 let original_display_range = original_range.start.to_display_point(&display_map)
911 ..original_range.end.to_display_point(&display_map);
912 let original_buffer_range = original_display_range.start.to_point(&display_map)
913 ..original_display_range.end.to_point(&display_map);
914 if movement::is_inside_word(&display_map, position)
915 || original_display_range.contains(&position)
916 {
917 let word_range = movement::surrounding_word(&display_map, position);
918 if word_range.start < original_display_range.start {
919 head = word_range.start.to_point(&display_map);
920 } else {
921 head = word_range.end.to_point(&display_map);
922 }
923 } else {
924 head = position.to_point(&display_map);
925 }
926
927 if head <= original_buffer_range.start {
928 tail = original_buffer_range.end;
929 } else {
930 tail = original_buffer_range.start;
931 }
932 }
933 SelectMode::Line(original_range) => {
934 let original_display_range = original_range.start.to_display_point(&display_map)
935 ..original_range.end.to_display_point(&display_map);
936 let original_buffer_range = original_display_range.start.to_point(&display_map)
937 ..original_display_range.end.to_point(&display_map);
938 let line_start = movement::line_beginning(&display_map, position, false);
939 let mut next_line_start = line_start.clone();
940 *next_line_start.row_mut() += 1;
941 *next_line_start.column_mut() = 0;
942 next_line_start = display_map.clip_point(next_line_start, Bias::Right);
943
944 if line_start < original_display_range.start {
945 head = line_start.to_point(&display_map);
946 } else {
947 head = next_line_start.to_point(&display_map);
948 }
949
950 if head <= original_buffer_range.start {
951 tail = original_buffer_range.end;
952 } else {
953 tail = original_buffer_range.start;
954 }
955 }
956 SelectMode::All => {
957 return;
958 }
959 };
960
961 if head < tail {
962 selection.start = buffer.anchor_before(head);
963 selection.end = buffer.anchor_before(tail);
964 selection.reversed = true;
965 } else {
966 selection.start = buffer.anchor_before(tail);
967 selection.end = buffer.anchor_before(head);
968 selection.reversed = false;
969 }
970 } else {
971 log::error!("update_selection dispatched with no pending selection");
972 return;
973 }
974
975 self.set_scroll_position(scroll_position, cx);
976 cx.notify();
977 }
978
979 fn end_selection(&mut self, cx: &mut ViewContext<Self>) {
980 self.columnar_selection_tail.take();
981 if self.pending_selection.is_some() {
982 let selections = self.local_selections::<usize>(cx);
983 self.update_selections(selections, None, cx);
984 }
985 }
986
987 fn select_columns(
988 &mut self,
989 tail: DisplayPoint,
990 head: DisplayPoint,
991 overshoot: u32,
992 display_map: &DisplaySnapshot,
993 cx: &mut ViewContext<Self>,
994 ) {
995 let start_row = cmp::min(tail.row(), head.row());
996 let end_row = cmp::max(tail.row(), head.row());
997 let start_column = cmp::min(tail.column(), head.column() + overshoot);
998 let end_column = cmp::max(tail.column(), head.column() + overshoot);
999 let reversed = start_column < tail.column();
1000
1001 let selections = (start_row..=end_row)
1002 .filter_map(|row| {
1003 if start_column <= display_map.line_len(row) && !display_map.is_block_line(row) {
1004 let start = display_map
1005 .clip_point(DisplayPoint::new(row, start_column), Bias::Left)
1006 .to_point(&display_map);
1007 let end = display_map
1008 .clip_point(DisplayPoint::new(row, end_column), Bias::Right)
1009 .to_point(&display_map);
1010 Some(Selection {
1011 id: post_inc(&mut self.next_selection_id),
1012 start,
1013 end,
1014 reversed,
1015 goal: SelectionGoal::None,
1016 })
1017 } else {
1018 None
1019 }
1020 })
1021 .collect::<Vec<_>>();
1022
1023 self.update_selections(selections, None, cx);
1024 cx.notify();
1025 }
1026
1027 pub fn is_selecting(&self) -> bool {
1028 self.pending_selection.is_some() || self.columnar_selection_tail.is_some()
1029 }
1030
1031 pub fn cancel(&mut self, _: &Cancel, cx: &mut ViewContext<Self>) {
1032 if self.active_diagnostics.is_some() {
1033 self.dismiss_diagnostics(cx);
1034 } else if let Some(PendingSelection { selection, .. }) = self.pending_selection.take() {
1035 let buffer = self.buffer.read(cx).snapshot(cx);
1036 let selection = Selection {
1037 id: selection.id,
1038 start: selection.start.to_point(&buffer),
1039 end: selection.end.to_point(&buffer),
1040 reversed: selection.reversed,
1041 goal: selection.goal,
1042 };
1043 if self.local_selections::<Point>(cx).is_empty() {
1044 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
1045 }
1046 } else {
1047 let buffer = self.buffer.read(cx).snapshot(cx);
1048 let mut oldest_selection = self.oldest_selection::<usize>(&buffer);
1049 if self.selection_count() == 1 {
1050 if oldest_selection.is_empty() {
1051 cx.propagate_action();
1052 return;
1053 }
1054
1055 oldest_selection.start = oldest_selection.head().clone();
1056 oldest_selection.end = oldest_selection.head().clone();
1057 }
1058 self.update_selections(vec![oldest_selection], Some(Autoscroll::Fit), cx);
1059 }
1060 }
1061
1062 pub fn select_ranges<I, T>(
1063 &mut self,
1064 ranges: I,
1065 autoscroll: Option<Autoscroll>,
1066 cx: &mut ViewContext<Self>,
1067 ) where
1068 I: IntoIterator<Item = Range<T>>,
1069 T: ToOffset,
1070 {
1071 let buffer = self.buffer.read(cx).snapshot(cx);
1072 let selections = ranges
1073 .into_iter()
1074 .map(|range| {
1075 let mut start = range.start.to_offset(&buffer);
1076 let mut end = range.end.to_offset(&buffer);
1077 let reversed = if start > end {
1078 mem::swap(&mut start, &mut end);
1079 true
1080 } else {
1081 false
1082 };
1083 Selection {
1084 id: post_inc(&mut self.next_selection_id),
1085 start,
1086 end,
1087 reversed,
1088 goal: SelectionGoal::None,
1089 }
1090 })
1091 .collect();
1092 self.update_selections(selections, autoscroll, cx);
1093 }
1094
1095 #[cfg(test)]
1096 fn select_display_ranges<'a, T>(
1097 &mut self,
1098 ranges: T,
1099 cx: &mut ViewContext<Self>,
1100 ) -> anyhow::Result<()>
1101 where
1102 T: IntoIterator<Item = &'a Range<DisplayPoint>>,
1103 {
1104 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1105 let selections = ranges
1106 .into_iter()
1107 .map(|range| {
1108 let mut start = range.start;
1109 let mut end = range.end;
1110 let reversed = if start > end {
1111 mem::swap(&mut start, &mut end);
1112 true
1113 } else {
1114 false
1115 };
1116 Selection {
1117 id: post_inc(&mut self.next_selection_id),
1118 start: start.to_point(&display_map),
1119 end: end.to_point(&display_map),
1120 reversed,
1121 goal: SelectionGoal::None,
1122 }
1123 })
1124 .collect();
1125 self.update_selections(selections, None, cx);
1126 Ok(())
1127 }
1128
1129 pub fn handle_input(&mut self, action: &Input, cx: &mut ViewContext<Self>) {
1130 let text = action.0.as_ref();
1131 if !self.skip_autoclose_end(text, cx) {
1132 self.start_transaction(cx);
1133 self.insert(text, cx);
1134 self.autoclose_pairs(cx);
1135 self.end_transaction(cx);
1136 }
1137 }
1138
1139 pub fn newline(&mut self, _: &Newline, cx: &mut ViewContext<Self>) {
1140 self.start_transaction(cx);
1141 let mut old_selections = SmallVec::<[_; 32]>::new();
1142 {
1143 let selections = self.local_selections::<Point>(cx);
1144 let buffer = self.buffer.read(cx).snapshot(cx);
1145 for selection in selections.iter() {
1146 let start_point = selection.start;
1147 let indent = buffer
1148 .indent_column_for_line(start_point.row)
1149 .min(start_point.column);
1150 let start = selection.start.to_offset(&buffer);
1151 let end = selection.end.to_offset(&buffer);
1152
1153 let mut insert_extra_newline = false;
1154 if let Some(language) = buffer.language() {
1155 let leading_whitespace_len = buffer
1156 .reversed_chars_at(start)
1157 .take_while(|c| c.is_whitespace() && *c != '\n')
1158 .map(|c| c.len_utf8())
1159 .sum::<usize>();
1160
1161 let trailing_whitespace_len = buffer
1162 .chars_at(end)
1163 .take_while(|c| c.is_whitespace() && *c != '\n')
1164 .map(|c| c.len_utf8())
1165 .sum::<usize>();
1166
1167 insert_extra_newline = language.brackets().iter().any(|pair| {
1168 let pair_start = pair.start.trim_end();
1169 let pair_end = pair.end.trim_start();
1170
1171 pair.newline
1172 && buffer.contains_str_at(end + trailing_whitespace_len, pair_end)
1173 && buffer.contains_str_at(
1174 (start - leading_whitespace_len).saturating_sub(pair_start.len()),
1175 pair_start,
1176 )
1177 });
1178 }
1179
1180 old_selections.push((selection.id, start..end, indent, insert_extra_newline));
1181 }
1182 }
1183
1184 let mut new_selections = Vec::with_capacity(old_selections.len());
1185 self.buffer.update(cx, |buffer, cx| {
1186 let mut delta = 0_isize;
1187 let mut pending_edit: Option<PendingEdit> = None;
1188 for (_, range, indent, insert_extra_newline) in &old_selections {
1189 if pending_edit.as_ref().map_or(false, |pending| {
1190 pending.indent != *indent
1191 || pending.insert_extra_newline != *insert_extra_newline
1192 }) {
1193 let pending = pending_edit.take().unwrap();
1194 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1195 new_text.push('\n');
1196 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1197 if pending.insert_extra_newline {
1198 new_text = new_text.repeat(2);
1199 }
1200 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1201 delta += pending.delta;
1202 }
1203
1204 let start = (range.start as isize + delta) as usize;
1205 let end = (range.end as isize + delta) as usize;
1206 let mut text_len = *indent as usize + 1;
1207 if *insert_extra_newline {
1208 text_len *= 2;
1209 }
1210
1211 let pending = pending_edit.get_or_insert_with(Default::default);
1212 pending.delta += text_len as isize - (end - start) as isize;
1213 pending.indent = *indent;
1214 pending.insert_extra_newline = *insert_extra_newline;
1215 pending.ranges.push(start..end);
1216 }
1217
1218 let pending = pending_edit.unwrap();
1219 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1220 new_text.push('\n');
1221 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1222 if pending.insert_extra_newline {
1223 new_text = new_text.repeat(2);
1224 }
1225 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1226
1227 let mut delta = 0_isize;
1228 new_selections.extend(old_selections.into_iter().map(
1229 |(id, range, indent, insert_extra_newline)| {
1230 let start = (range.start as isize + delta) as usize;
1231 let end = (range.end as isize + delta) as usize;
1232 let text_before_cursor_len = indent as usize + 1;
1233 let cursor = start + text_before_cursor_len;
1234 let text_len = if insert_extra_newline {
1235 text_before_cursor_len * 2
1236 } else {
1237 text_before_cursor_len
1238 };
1239 delta += text_len as isize - (end - start) as isize;
1240 Selection {
1241 id,
1242 start: cursor,
1243 end: cursor,
1244 reversed: false,
1245 goal: SelectionGoal::None,
1246 }
1247 },
1248 ))
1249 });
1250
1251 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1252 self.end_transaction(cx);
1253
1254 #[derive(Default)]
1255 struct PendingEdit {
1256 indent: u32,
1257 insert_extra_newline: bool,
1258 delta: isize,
1259 ranges: SmallVec<[Range<usize>; 32]>,
1260 }
1261 }
1262
1263 pub fn insert(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1264 self.start_transaction(cx);
1265 let old_selections = self.local_selections::<usize>(cx);
1266 let new_selections = self.buffer.update(cx, |buffer, cx| {
1267 let snapshot = buffer.read(cx);
1268 let new_selections = old_selections
1269 .iter()
1270 .map(|selection| Selection {
1271 id: selection.id,
1272 start: snapshot.anchor_after(selection.start),
1273 end: snapshot.anchor_after(selection.end),
1274 reversed: false,
1275 goal: SelectionGoal::None,
1276 })
1277 .collect::<Vec<_>>();
1278
1279 drop(snapshot);
1280 let edit_ranges = old_selections.iter().map(|s| s.start..s.end);
1281 buffer.edit_with_autoindent(edit_ranges, text, cx);
1282
1283 let snapshot = buffer.read(cx);
1284 self.resolve_selections::<usize, _>(new_selections.iter(), &snapshot)
1285 .collect()
1286 });
1287
1288 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1289 self.end_transaction(cx);
1290 }
1291
1292 fn autoclose_pairs(&mut self, cx: &mut ViewContext<Self>) {
1293 let selections = self.local_selections::<usize>(cx);
1294 let new_autoclose_pair = self.buffer.update(cx, |buffer, cx| {
1295 let snapshot = buffer.snapshot(cx);
1296 let autoclose_pair = snapshot.language().and_then(|language| {
1297 let first_selection_start = selections.first().unwrap().start;
1298 let pair = language.brackets().iter().find(|pair| {
1299 snapshot.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 snapshot.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(&snapshot);
1325 start..start
1326 })
1327 .collect::<SmallVec<[_; 32]>>();
1328
1329 buffer.edit(selection_ranges, &pair.end, cx);
1330 let snapshot = buffer.snapshot(cx);
1331
1332 if pair.end.len() == 1 {
1333 let mut delta = 0;
1334 Some(BracketPairState {
1335 ranges: selections
1336 .iter()
1337 .map(move |selection| {
1338 let offset = selection.start + delta;
1339 delta += 1;
1340 snapshot.anchor_before(offset)..snapshot.anchor_after(offset)
1341 })
1342 .collect(),
1343 pair,
1344 })
1345 } else {
1346 None
1347 }
1348 })
1349 });
1350 self.autoclose_stack.extend(new_autoclose_pair);
1351 }
1352
1353 fn skip_autoclose_end(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
1354 let old_selections = self.local_selections::<usize>(cx);
1355 let autoclose_pair = if let Some(autoclose_pair) = self.autoclose_stack.last() {
1356 autoclose_pair
1357 } else {
1358 return false;
1359 };
1360 if text != autoclose_pair.pair.end {
1361 return false;
1362 }
1363
1364 debug_assert_eq!(old_selections.len(), autoclose_pair.ranges.len());
1365
1366 let buffer = self.buffer.read(cx).snapshot(cx);
1367 if old_selections
1368 .iter()
1369 .zip(autoclose_pair.ranges.iter().map(|r| r.to_offset(&buffer)))
1370 .all(|(selection, autoclose_range)| {
1371 let autoclose_range_end = autoclose_range.end.to_offset(&buffer);
1372 selection.is_empty() && selection.start == autoclose_range_end
1373 })
1374 {
1375 let new_selections = old_selections
1376 .into_iter()
1377 .map(|selection| {
1378 let cursor = selection.start + 1;
1379 Selection {
1380 id: selection.id,
1381 start: cursor,
1382 end: cursor,
1383 reversed: false,
1384 goal: SelectionGoal::None,
1385 }
1386 })
1387 .collect();
1388 self.autoclose_stack.pop();
1389 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1390 true
1391 } else {
1392 false
1393 }
1394 }
1395
1396 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
1397 self.start_transaction(cx);
1398 self.select_all(&SelectAll, cx);
1399 self.insert("", cx);
1400 self.end_transaction(cx);
1401 }
1402
1403 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
1404 self.start_transaction(cx);
1405 let mut selections = self.local_selections::<Point>(cx);
1406 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1407 for selection in &mut selections {
1408 if selection.is_empty() {
1409 let head = selection.head().to_display_point(&display_map);
1410 let cursor = movement::left(&display_map, head)
1411 .unwrap()
1412 .to_point(&display_map);
1413 selection.set_head(cursor);
1414 selection.goal = SelectionGoal::None;
1415 }
1416 }
1417 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1418 self.insert("", cx);
1419 self.end_transaction(cx);
1420 }
1421
1422 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
1423 self.start_transaction(cx);
1424 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1425 let mut selections = self.local_selections::<Point>(cx);
1426 for selection in &mut selections {
1427 if selection.is_empty() {
1428 let head = selection.head().to_display_point(&display_map);
1429 let cursor = movement::right(&display_map, head)
1430 .unwrap()
1431 .to_point(&display_map);
1432 selection.set_head(cursor);
1433 selection.goal = SelectionGoal::None;
1434 }
1435 }
1436 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1437 self.insert(&"", cx);
1438 self.end_transaction(cx);
1439 }
1440
1441 pub fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
1442 self.start_transaction(cx);
1443 let tab_size = (self.build_settings)(cx).tab_size;
1444 let mut selections = self.local_selections::<Point>(cx);
1445 let mut last_indent = None;
1446 self.buffer.update(cx, |buffer, cx| {
1447 for selection in &mut selections {
1448 if selection.is_empty() {
1449 let char_column = buffer
1450 .read(cx)
1451 .text_for_range(Point::new(selection.start.row, 0)..selection.start)
1452 .flat_map(str::chars)
1453 .count();
1454 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
1455 buffer.edit(
1456 [selection.start..selection.start],
1457 " ".repeat(chars_to_next_tab_stop),
1458 cx,
1459 );
1460 selection.start.column += chars_to_next_tab_stop as u32;
1461 selection.end = selection.start;
1462 } else {
1463 let mut start_row = selection.start.row;
1464 let mut end_row = selection.end.row + 1;
1465
1466 // If a selection ends at the beginning of a line, don't indent
1467 // that last line.
1468 if selection.end.column == 0 {
1469 end_row -= 1;
1470 }
1471
1472 // Avoid re-indenting a row that has already been indented by a
1473 // previous selection, but still update this selection's column
1474 // to reflect that indentation.
1475 if let Some((last_indent_row, last_indent_len)) = last_indent {
1476 if last_indent_row == selection.start.row {
1477 selection.start.column += last_indent_len;
1478 start_row += 1;
1479 }
1480 if last_indent_row == selection.end.row {
1481 selection.end.column += last_indent_len;
1482 }
1483 }
1484
1485 for row in start_row..end_row {
1486 let indent_column = buffer.read(cx).indent_column_for_line(row) as usize;
1487 let columns_to_next_tab_stop = tab_size - (indent_column % tab_size);
1488 let row_start = Point::new(row, 0);
1489 buffer.edit(
1490 [row_start..row_start],
1491 " ".repeat(columns_to_next_tab_stop),
1492 cx,
1493 );
1494
1495 // Update this selection's endpoints to reflect the indentation.
1496 if row == selection.start.row {
1497 selection.start.column += columns_to_next_tab_stop as u32;
1498 }
1499 if row == selection.end.row {
1500 selection.end.column += columns_to_next_tab_stop as u32;
1501 }
1502
1503 last_indent = Some((row, columns_to_next_tab_stop as u32));
1504 }
1505 }
1506 }
1507 });
1508
1509 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1510 self.end_transaction(cx);
1511 }
1512
1513 pub fn outdent(&mut self, _: &Outdent, cx: &mut ViewContext<Self>) {
1514 self.start_transaction(cx);
1515 let tab_size = (self.build_settings)(cx).tab_size;
1516 let selections = self.local_selections::<Point>(cx);
1517 let mut deletion_ranges = Vec::new();
1518 let mut last_outdent = None;
1519 {
1520 let buffer = self.buffer.read(cx).read(cx);
1521 for selection in &selections {
1522 let mut start_row = selection.start.row;
1523 let mut end_row = selection.end.row + 1;
1524
1525 // If a selection ends at the beginning of a line, don't indent
1526 // that last line.
1527 if selection.end.column == 0 {
1528 end_row -= 1;
1529 }
1530
1531 // Avoid re-outdenting a row that has already been outdented by a
1532 // previous selection.
1533 if let Some(last_row) = last_outdent {
1534 if last_row == selection.start.row {
1535 start_row += 1;
1536 }
1537 }
1538
1539 for row in start_row..end_row {
1540 let column = buffer.indent_column_for_line(row) as usize;
1541 if column > 0 {
1542 let mut deletion_len = (column % tab_size) as u32;
1543 if deletion_len == 0 {
1544 deletion_len = tab_size as u32;
1545 }
1546 deletion_ranges.push(Point::new(row, 0)..Point::new(row, deletion_len));
1547 last_outdent = Some(row);
1548 }
1549 }
1550 }
1551 }
1552 self.buffer.update(cx, |buffer, cx| {
1553 buffer.edit(deletion_ranges, "", cx);
1554 });
1555
1556 self.update_selections(
1557 self.local_selections::<usize>(cx),
1558 Some(Autoscroll::Fit),
1559 cx,
1560 );
1561 self.end_transaction(cx);
1562 }
1563
1564 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
1565 self.start_transaction(cx);
1566
1567 let selections = self.local_selections::<Point>(cx);
1568 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1569 let buffer = self.buffer.read(cx).snapshot(cx);
1570
1571 let mut row_delta = 0;
1572 let mut new_cursors = Vec::new();
1573 let mut edit_ranges = Vec::new();
1574 let mut selections = selections.iter().peekable();
1575 while let Some(selection) = selections.next() {
1576 let mut rows = selection.spanned_rows(false, &display_map).buffer_rows;
1577 let goal_display_column = selection.head().to_display_point(&display_map).column();
1578
1579 // Accumulate contiguous regions of rows that we want to delete.
1580 while let Some(next_selection) = selections.peek() {
1581 let next_rows = next_selection.spanned_rows(false, &display_map).buffer_rows;
1582 if next_rows.start <= rows.end {
1583 rows.end = next_rows.end;
1584 selections.next().unwrap();
1585 } else {
1586 break;
1587 }
1588 }
1589
1590 let mut edit_start = Point::new(rows.start, 0).to_offset(&buffer);
1591 let edit_end;
1592 let cursor_buffer_row;
1593 if buffer.max_point().row >= rows.end {
1594 // If there's a line after the range, delete the \n from the end of the row range
1595 // and position the cursor on the next line.
1596 edit_end = Point::new(rows.end, 0).to_offset(&buffer);
1597 cursor_buffer_row = rows.start;
1598 } else {
1599 // If there isn't a line after the range, delete the \n from the line before the
1600 // start of the row range and position the cursor there.
1601 edit_start = edit_start.saturating_sub(1);
1602 edit_end = buffer.len();
1603 cursor_buffer_row = rows.start.saturating_sub(1);
1604 }
1605
1606 let mut cursor =
1607 Point::new(cursor_buffer_row - row_delta, 0).to_display_point(&display_map);
1608 *cursor.column_mut() =
1609 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
1610 row_delta += rows.len() as u32;
1611
1612 new_cursors.push((selection.id, cursor.to_point(&display_map)));
1613 edit_ranges.push(edit_start..edit_end);
1614 }
1615
1616 new_cursors.sort_unstable_by_key(|(_, point)| point.clone());
1617 let new_selections = new_cursors
1618 .into_iter()
1619 .map(|(id, cursor)| Selection {
1620 id,
1621 start: cursor,
1622 end: cursor,
1623 reversed: false,
1624 goal: SelectionGoal::None,
1625 })
1626 .collect();
1627 self.buffer
1628 .update(cx, |buffer, cx| buffer.edit(edit_ranges, "", cx));
1629 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1630 self.end_transaction(cx);
1631 }
1632
1633 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
1634 self.start_transaction(cx);
1635
1636 let mut selections = self.local_selections::<Point>(cx);
1637 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1638 let buffer = &display_map.buffer_snapshot;
1639
1640 let mut edits = Vec::new();
1641 let mut selections_iter = selections.iter().peekable();
1642 while let Some(selection) = selections_iter.next() {
1643 // Avoid duplicating the same lines twice.
1644 let mut rows = selection.spanned_rows(false, &display_map).buffer_rows;
1645
1646 while let Some(next_selection) = selections_iter.peek() {
1647 let next_rows = next_selection.spanned_rows(false, &display_map).buffer_rows;
1648 if next_rows.start <= rows.end - 1 {
1649 rows.end = next_rows.end;
1650 selections_iter.next().unwrap();
1651 } else {
1652 break;
1653 }
1654 }
1655
1656 // Copy the text from the selected row region and splice it at the start of the region.
1657 let start = Point::new(rows.start, 0);
1658 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
1659 let text = buffer
1660 .text_for_range(start..end)
1661 .chain(Some("\n"))
1662 .collect::<String>();
1663 edits.push((start, text, rows.len() as u32));
1664 }
1665
1666 let mut edits_iter = edits.iter().peekable();
1667 let mut row_delta = 0;
1668 for selection in selections.iter_mut() {
1669 while let Some((point, _, line_count)) = edits_iter.peek() {
1670 if *point <= selection.start {
1671 row_delta += line_count;
1672 edits_iter.next();
1673 } else {
1674 break;
1675 }
1676 }
1677 selection.start.row += row_delta;
1678 selection.end.row += row_delta;
1679 }
1680
1681 self.buffer.update(cx, |buffer, cx| {
1682 for (point, text, _) in edits.into_iter().rev() {
1683 buffer.edit(Some(point..point), text, cx);
1684 }
1685 });
1686
1687 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1688 self.end_transaction(cx);
1689 }
1690
1691 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
1692 self.start_transaction(cx);
1693
1694 let selections = self.local_selections::<Point>(cx);
1695 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1696 let buffer = self.buffer.read(cx).snapshot(cx);
1697
1698 let mut edits = Vec::new();
1699 let mut new_selection_ranges = Vec::new();
1700 let mut old_folds = Vec::new();
1701 let mut new_folds = Vec::new();
1702
1703 let mut selections = selections.iter().peekable();
1704 let mut contiguous_selections = Vec::new();
1705 while let Some(selection) = selections.next() {
1706 // Accumulate contiguous regions of rows that we want to move.
1707 contiguous_selections.push(selection.point_range(&buffer));
1708 let SpannedRows {
1709 mut buffer_rows,
1710 mut display_rows,
1711 } = selection.spanned_rows(false, &display_map);
1712
1713 while let Some(next_selection) = selections.peek() {
1714 let SpannedRows {
1715 buffer_rows: next_buffer_rows,
1716 display_rows: next_display_rows,
1717 } = next_selection.spanned_rows(false, &display_map);
1718 if next_buffer_rows.start <= buffer_rows.end {
1719 buffer_rows.end = next_buffer_rows.end;
1720 display_rows.end = next_display_rows.end;
1721 contiguous_selections.push(next_selection.point_range(&buffer));
1722 selections.next().unwrap();
1723 } else {
1724 break;
1725 }
1726 }
1727
1728 // Cut the text from the selected rows and paste it at the start of the previous line.
1729 if display_rows.start != 0 {
1730 let start = Point::new(buffer_rows.start, 0).to_offset(&buffer);
1731 let end = Point::new(buffer_rows.end - 1, buffer.line_len(buffer_rows.end - 1))
1732 .to_offset(&buffer);
1733
1734 let prev_row_display_start = DisplayPoint::new(display_rows.start - 1, 0);
1735 let prev_row_buffer_start = display_map.prev_row_boundary(prev_row_display_start).1;
1736 let prev_row_buffer_start_offset = prev_row_buffer_start.to_offset(&buffer);
1737
1738 let mut text = String::new();
1739 text.extend(buffer.text_for_range(start..end));
1740 text.push('\n');
1741 edits.push((
1742 prev_row_buffer_start_offset..prev_row_buffer_start_offset,
1743 text,
1744 ));
1745 edits.push((start - 1..end, String::new()));
1746
1747 let row_delta = buffer_rows.start - prev_row_buffer_start.row;
1748
1749 // Move selections up.
1750 for range in &mut contiguous_selections {
1751 range.start.row -= row_delta;
1752 range.end.row -= row_delta;
1753 }
1754
1755 // Move folds up.
1756 old_folds.push(start..end);
1757 for fold in display_map.folds_in_range(start..end) {
1758 let mut start = fold.start.to_point(&buffer);
1759 let mut end = fold.end.to_point(&buffer);
1760 start.row -= row_delta;
1761 end.row -= row_delta;
1762 new_folds.push(start..end);
1763 }
1764 }
1765
1766 new_selection_ranges.extend(contiguous_selections.drain(..));
1767 }
1768
1769 self.unfold_ranges(old_folds, cx);
1770 self.buffer.update(cx, |buffer, cx| {
1771 for (range, text) in edits.into_iter().rev() {
1772 buffer.edit(Some(range), text, cx);
1773 }
1774 });
1775 self.fold_ranges(new_folds, cx);
1776 self.select_ranges(new_selection_ranges, Some(Autoscroll::Fit), cx);
1777
1778 self.end_transaction(cx);
1779 }
1780
1781 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
1782 self.start_transaction(cx);
1783
1784 let selections = self.local_selections::<Point>(cx);
1785 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1786 let buffer = self.buffer.read(cx).snapshot(cx);
1787
1788 let mut edits = Vec::new();
1789 let mut new_selection_ranges = Vec::new();
1790 let mut old_folds = Vec::new();
1791 let mut new_folds = Vec::new();
1792
1793 let mut selections = selections.iter().peekable();
1794 let mut contiguous_selections = Vec::new();
1795 while let Some(selection) = selections.next() {
1796 // Accumulate contiguous regions of rows that we want to move.
1797 contiguous_selections.push(selection.point_range(&buffer));
1798 let SpannedRows {
1799 mut buffer_rows,
1800 mut display_rows,
1801 } = selection.spanned_rows(false, &display_map);
1802 while let Some(next_selection) = selections.peek() {
1803 let SpannedRows {
1804 buffer_rows: next_buffer_rows,
1805 display_rows: next_display_rows,
1806 } = next_selection.spanned_rows(false, &display_map);
1807 if next_buffer_rows.start <= buffer_rows.end {
1808 buffer_rows.end = next_buffer_rows.end;
1809 display_rows.end = next_display_rows.end;
1810 contiguous_selections.push(next_selection.point_range(&buffer));
1811 selections.next().unwrap();
1812 } else {
1813 break;
1814 }
1815 }
1816
1817 // Cut the text from the selected rows and paste it at the end of the next line.
1818 if display_rows.end <= display_map.max_point().row() {
1819 let start = Point::new(buffer_rows.start, 0).to_offset(&buffer);
1820 let end = Point::new(buffer_rows.end - 1, buffer.line_len(buffer_rows.end - 1))
1821 .to_offset(&buffer);
1822
1823 let next_row_display_end =
1824 DisplayPoint::new(display_rows.end, display_map.line_len(display_rows.end));
1825 let next_row_buffer_end = display_map.next_row_boundary(next_row_display_end).1;
1826 let next_row_buffer_end_offset = next_row_buffer_end.to_offset(&buffer);
1827
1828 let mut text = String::new();
1829 text.push('\n');
1830 text.extend(buffer.text_for_range(start..end));
1831 edits.push((start..end + 1, String::new()));
1832 edits.push((next_row_buffer_end_offset..next_row_buffer_end_offset, text));
1833
1834 let row_delta = next_row_buffer_end.row - buffer_rows.end + 1;
1835
1836 // Move selections down.
1837 for range in &mut contiguous_selections {
1838 range.start.row += row_delta;
1839 range.end.row += row_delta;
1840 }
1841
1842 // Move folds down.
1843 old_folds.push(start..end);
1844 for fold in display_map.folds_in_range(start..end) {
1845 let mut start = fold.start.to_point(&buffer);
1846 let mut end = fold.end.to_point(&buffer);
1847 start.row += row_delta;
1848 end.row += row_delta;
1849 new_folds.push(start..end);
1850 }
1851 }
1852
1853 new_selection_ranges.extend(contiguous_selections.drain(..));
1854 }
1855
1856 self.unfold_ranges(old_folds, cx);
1857 self.buffer.update(cx, |buffer, cx| {
1858 for (range, text) in edits.into_iter().rev() {
1859 buffer.edit(Some(range), text, cx);
1860 }
1861 });
1862 self.fold_ranges(new_folds, cx);
1863 self.select_ranges(new_selection_ranges, Some(Autoscroll::Fit), cx);
1864
1865 self.end_transaction(cx);
1866 }
1867
1868 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
1869 self.start_transaction(cx);
1870 let mut text = String::new();
1871 let mut selections = self.local_selections::<Point>(cx);
1872 let mut clipboard_selections = Vec::with_capacity(selections.len());
1873 {
1874 let buffer = self.buffer.read(cx).read(cx);
1875 let max_point = buffer.max_point();
1876 for selection in &mut selections {
1877 let is_entire_line = selection.is_empty();
1878 if is_entire_line {
1879 selection.start = Point::new(selection.start.row, 0);
1880 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
1881 }
1882 let mut len = 0;
1883 for chunk in buffer.text_for_range(selection.start..selection.end) {
1884 text.push_str(chunk);
1885 len += chunk.len();
1886 }
1887 clipboard_selections.push(ClipboardSelection {
1888 len,
1889 is_entire_line,
1890 });
1891 }
1892 }
1893 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1894 self.insert("", cx);
1895 self.end_transaction(cx);
1896
1897 cx.as_mut()
1898 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
1899 }
1900
1901 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
1902 let selections = self.local_selections::<Point>(cx);
1903 let mut text = String::new();
1904 let mut clipboard_selections = Vec::with_capacity(selections.len());
1905 {
1906 let buffer = self.buffer.read(cx).read(cx);
1907 let max_point = buffer.max_point();
1908 for selection in selections.iter() {
1909 let mut start = selection.start;
1910 let mut end = selection.end;
1911 let is_entire_line = selection.is_empty();
1912 if is_entire_line {
1913 start = Point::new(start.row, 0);
1914 end = cmp::min(max_point, Point::new(start.row + 1, 0));
1915 }
1916 let mut len = 0;
1917 for chunk in buffer.text_for_range(start..end) {
1918 text.push_str(chunk);
1919 len += chunk.len();
1920 }
1921 clipboard_selections.push(ClipboardSelection {
1922 len,
1923 is_entire_line,
1924 });
1925 }
1926 }
1927
1928 cx.as_mut()
1929 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
1930 }
1931
1932 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
1933 if let Some(item) = cx.as_mut().read_from_clipboard() {
1934 let clipboard_text = item.text();
1935 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
1936 let mut selections = self.local_selections::<usize>(cx);
1937 let all_selections_were_entire_line =
1938 clipboard_selections.iter().all(|s| s.is_entire_line);
1939 if clipboard_selections.len() != selections.len() {
1940 clipboard_selections.clear();
1941 }
1942
1943 let mut delta = 0_isize;
1944 let mut start_offset = 0;
1945 for (i, selection) in selections.iter_mut().enumerate() {
1946 let to_insert;
1947 let entire_line;
1948 if let Some(clipboard_selection) = clipboard_selections.get(i) {
1949 let end_offset = start_offset + clipboard_selection.len;
1950 to_insert = &clipboard_text[start_offset..end_offset];
1951 entire_line = clipboard_selection.is_entire_line;
1952 start_offset = end_offset
1953 } else {
1954 to_insert = clipboard_text.as_str();
1955 entire_line = all_selections_were_entire_line;
1956 }
1957
1958 selection.start = (selection.start as isize + delta) as usize;
1959 selection.end = (selection.end as isize + delta) as usize;
1960
1961 self.buffer.update(cx, |buffer, cx| {
1962 // If the corresponding selection was empty when this slice of the
1963 // clipboard text was written, then the entire line containing the
1964 // selection was copied. If this selection is also currently empty,
1965 // then paste the line before the current line of the buffer.
1966 let range = if selection.is_empty() && entire_line {
1967 let column = selection.start.to_point(&buffer.read(cx)).column as usize;
1968 let line_start = selection.start - column;
1969 line_start..line_start
1970 } else {
1971 selection.start..selection.end
1972 };
1973
1974 delta += to_insert.len() as isize - range.len() as isize;
1975 buffer.edit([range], to_insert, cx);
1976 selection.start += to_insert.len();
1977 selection.end = selection.start;
1978 });
1979 }
1980 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1981 } else {
1982 self.insert(clipboard_text, cx);
1983 }
1984 }
1985 }
1986
1987 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
1988 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
1989 if let Some((selections, _)) = self.selection_history.get(&tx_id).cloned() {
1990 self.set_selections(selections, cx);
1991 }
1992 self.request_autoscroll(Autoscroll::Fit, cx);
1993 }
1994 }
1995
1996 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
1997 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
1998 if let Some((_, Some(selections))) = self.selection_history.get(&tx_id).cloned() {
1999 self.set_selections(selections, cx);
2000 }
2001 self.request_autoscroll(Autoscroll::Fit, cx);
2002 }
2003 }
2004
2005 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
2006 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2007 let mut selections = self.local_selections::<Point>(cx);
2008 for selection in &mut selections {
2009 let start = selection.start.to_display_point(&display_map);
2010 let end = selection.end.to_display_point(&display_map);
2011
2012 if start != end {
2013 selection.end = selection.start.clone();
2014 } else {
2015 let cursor = movement::left(&display_map, start)
2016 .unwrap()
2017 .to_point(&display_map);
2018 selection.start = cursor.clone();
2019 selection.end = cursor;
2020 }
2021 selection.reversed = false;
2022 selection.goal = SelectionGoal::None;
2023 }
2024 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2025 }
2026
2027 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
2028 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2029 let mut selections = self.local_selections::<Point>(cx);
2030 for selection in &mut selections {
2031 let head = selection.head().to_display_point(&display_map);
2032 let cursor = movement::left(&display_map, head)
2033 .unwrap()
2034 .to_point(&display_map);
2035 selection.set_head(cursor);
2036 selection.goal = SelectionGoal::None;
2037 }
2038 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2039 }
2040
2041 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
2042 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2043 let mut selections = self.local_selections::<Point>(cx);
2044 for selection in &mut selections {
2045 let start = selection.start.to_display_point(&display_map);
2046 let end = selection.end.to_display_point(&display_map);
2047
2048 if start != end {
2049 selection.start = selection.end.clone();
2050 } else {
2051 let cursor = movement::right(&display_map, end)
2052 .unwrap()
2053 .to_point(&display_map);
2054 selection.start = cursor;
2055 selection.end = cursor;
2056 }
2057 selection.reversed = false;
2058 selection.goal = SelectionGoal::None;
2059 }
2060 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2061 }
2062
2063 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
2064 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2065 let mut selections = self.local_selections::<Point>(cx);
2066 for selection in &mut selections {
2067 let head = selection.head().to_display_point(&display_map);
2068 let cursor = movement::right(&display_map, head)
2069 .unwrap()
2070 .to_point(&display_map);
2071 selection.set_head(cursor);
2072 selection.goal = SelectionGoal::None;
2073 }
2074 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2075 }
2076
2077 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
2078 if matches!(self.mode, EditorMode::SingleLine) {
2079 cx.propagate_action();
2080 return;
2081 }
2082
2083 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2084 let mut selections = self.local_selections::<Point>(cx);
2085 for selection in &mut selections {
2086 let start = selection.start.to_display_point(&display_map);
2087 let end = selection.end.to_display_point(&display_map);
2088 if start != end {
2089 selection.goal = SelectionGoal::None;
2090 }
2091
2092 let (start, goal) = movement::up(&display_map, start, selection.goal).unwrap();
2093 let cursor = start.to_point(&display_map);
2094 selection.start = cursor;
2095 selection.end = cursor;
2096 selection.goal = goal;
2097 selection.reversed = false;
2098 }
2099 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2100 }
2101
2102 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
2103 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2104 let mut selections = self.local_selections::<Point>(cx);
2105 for selection in &mut selections {
2106 let head = selection.head().to_display_point(&display_map);
2107 let (head, goal) = movement::up(&display_map, head, selection.goal).unwrap();
2108 let cursor = head.to_point(&display_map);
2109 selection.set_head(cursor);
2110 selection.goal = goal;
2111 }
2112 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2113 }
2114
2115 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
2116 if matches!(self.mode, EditorMode::SingleLine) {
2117 cx.propagate_action();
2118 return;
2119 }
2120
2121 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2122 let mut selections = self.local_selections::<Point>(cx);
2123 for selection in &mut selections {
2124 let start = selection.start.to_display_point(&display_map);
2125 let end = selection.end.to_display_point(&display_map);
2126 if start != end {
2127 selection.goal = SelectionGoal::None;
2128 }
2129
2130 let (start, goal) = movement::down(&display_map, end, selection.goal).unwrap();
2131 let cursor = start.to_point(&display_map);
2132 selection.start = cursor;
2133 selection.end = cursor;
2134 selection.goal = goal;
2135 selection.reversed = false;
2136 }
2137 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2138 }
2139
2140 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
2141 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2142 let mut selections = self.local_selections::<Point>(cx);
2143 for selection in &mut selections {
2144 let head = selection.head().to_display_point(&display_map);
2145 let (head, goal) = movement::down(&display_map, head, selection.goal).unwrap();
2146 let cursor = head.to_point(&display_map);
2147 selection.set_head(cursor);
2148 selection.goal = goal;
2149 }
2150 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2151 }
2152
2153 pub fn move_to_previous_word_boundary(
2154 &mut self,
2155 _: &MoveToPreviousWordBoundary,
2156 cx: &mut ViewContext<Self>,
2157 ) {
2158 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2159 let mut selections = self.local_selections::<Point>(cx);
2160 for selection in &mut selections {
2161 let head = selection.head().to_display_point(&display_map);
2162 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2163 selection.start = cursor.clone();
2164 selection.end = cursor;
2165 selection.reversed = false;
2166 selection.goal = SelectionGoal::None;
2167 }
2168 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2169 }
2170
2171 pub fn select_to_previous_word_boundary(
2172 &mut self,
2173 _: &SelectToPreviousWordBoundary,
2174 cx: &mut ViewContext<Self>,
2175 ) {
2176 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2177 let mut selections = self.local_selections::<Point>(cx);
2178 for selection in &mut selections {
2179 let head = selection.head().to_display_point(&display_map);
2180 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2181 selection.set_head(cursor);
2182 selection.goal = SelectionGoal::None;
2183 }
2184 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2185 }
2186
2187 pub fn delete_to_previous_word_boundary(
2188 &mut self,
2189 _: &DeleteToPreviousWordBoundary,
2190 cx: &mut ViewContext<Self>,
2191 ) {
2192 self.start_transaction(cx);
2193 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2194 let mut selections = self.local_selections::<Point>(cx);
2195 for selection in &mut selections {
2196 if selection.is_empty() {
2197 let head = selection.head().to_display_point(&display_map);
2198 let cursor =
2199 movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2200 selection.set_head(cursor);
2201 selection.goal = SelectionGoal::None;
2202 }
2203 }
2204 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2205 self.insert("", cx);
2206 self.end_transaction(cx);
2207 }
2208
2209 pub fn move_to_next_word_boundary(
2210 &mut self,
2211 _: &MoveToNextWordBoundary,
2212 cx: &mut ViewContext<Self>,
2213 ) {
2214 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2215 let mut selections = self.local_selections::<Point>(cx);
2216 for selection in &mut selections {
2217 let head = selection.head().to_display_point(&display_map);
2218 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
2219 selection.start = cursor;
2220 selection.end = cursor;
2221 selection.reversed = false;
2222 selection.goal = SelectionGoal::None;
2223 }
2224 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2225 }
2226
2227 pub fn select_to_next_word_boundary(
2228 &mut self,
2229 _: &SelectToNextWordBoundary,
2230 cx: &mut ViewContext<Self>,
2231 ) {
2232 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2233 let mut selections = self.local_selections::<Point>(cx);
2234 for selection in &mut selections {
2235 let head = selection.head().to_display_point(&display_map);
2236 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
2237 selection.set_head(cursor);
2238 selection.goal = SelectionGoal::None;
2239 }
2240 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2241 }
2242
2243 pub fn delete_to_next_word_boundary(
2244 &mut self,
2245 _: &DeleteToNextWordBoundary,
2246 cx: &mut ViewContext<Self>,
2247 ) {
2248 self.start_transaction(cx);
2249 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2250 let mut selections = self.local_selections::<Point>(cx);
2251 for selection in &mut selections {
2252 if selection.is_empty() {
2253 let head = selection.head().to_display_point(&display_map);
2254 let cursor =
2255 movement::next_word_boundary(&display_map, head).to_point(&display_map);
2256 selection.set_head(cursor);
2257 selection.goal = SelectionGoal::None;
2258 }
2259 }
2260 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2261 self.insert("", cx);
2262 self.end_transaction(cx);
2263 }
2264
2265 pub fn move_to_beginning_of_line(
2266 &mut self,
2267 _: &MoveToBeginningOfLine,
2268 cx: &mut ViewContext<Self>,
2269 ) {
2270 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2271 let mut selections = self.local_selections::<Point>(cx);
2272 for selection in &mut selections {
2273 let head = selection.head().to_display_point(&display_map);
2274 let new_head = movement::line_beginning(&display_map, head, true);
2275 let cursor = new_head.to_point(&display_map);
2276 selection.start = cursor;
2277 selection.end = cursor;
2278 selection.reversed = false;
2279 selection.goal = SelectionGoal::None;
2280 }
2281 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2282 }
2283
2284 pub fn select_to_beginning_of_line(
2285 &mut self,
2286 SelectToBeginningOfLine(toggle_indent): &SelectToBeginningOfLine,
2287 cx: &mut ViewContext<Self>,
2288 ) {
2289 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2290 let mut selections = self.local_selections::<Point>(cx);
2291 for selection in &mut selections {
2292 let head = selection.head().to_display_point(&display_map);
2293 let new_head = movement::line_beginning(&display_map, head, *toggle_indent);
2294 selection.set_head(new_head.to_point(&display_map));
2295 selection.goal = SelectionGoal::None;
2296 }
2297 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2298 }
2299
2300 pub fn delete_to_beginning_of_line(
2301 &mut self,
2302 _: &DeleteToBeginningOfLine,
2303 cx: &mut ViewContext<Self>,
2304 ) {
2305 self.start_transaction(cx);
2306 self.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
2307 self.backspace(&Backspace, cx);
2308 self.end_transaction(cx);
2309 }
2310
2311 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
2312 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2313 let mut selections = self.local_selections::<Point>(cx);
2314 {
2315 for selection in &mut selections {
2316 let head = selection.head().to_display_point(&display_map);
2317 let new_head = movement::line_end(&display_map, head);
2318 let anchor = new_head.to_point(&display_map);
2319 selection.start = anchor.clone();
2320 selection.end = anchor;
2321 selection.reversed = false;
2322 selection.goal = SelectionGoal::None;
2323 }
2324 }
2325 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2326 }
2327
2328 pub fn select_to_end_of_line(&mut self, _: &SelectToEndOfLine, cx: &mut ViewContext<Self>) {
2329 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2330 let mut selections = self.local_selections::<Point>(cx);
2331 for selection in &mut selections {
2332 let head = selection.head().to_display_point(&display_map);
2333 let new_head = movement::line_end(&display_map, head);
2334 selection.set_head(new_head.to_point(&display_map));
2335 selection.goal = SelectionGoal::None;
2336 }
2337 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2338 }
2339
2340 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
2341 self.start_transaction(cx);
2342 self.select_to_end_of_line(&SelectToEndOfLine, cx);
2343 self.delete(&Delete, cx);
2344 self.end_transaction(cx);
2345 }
2346
2347 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
2348 self.start_transaction(cx);
2349 self.select_to_end_of_line(&SelectToEndOfLine, cx);
2350 self.cut(&Cut, cx);
2351 self.end_transaction(cx);
2352 }
2353
2354 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
2355 let selection = Selection {
2356 id: post_inc(&mut self.next_selection_id),
2357 start: 0,
2358 end: 0,
2359 reversed: false,
2360 goal: SelectionGoal::None,
2361 };
2362 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2363 }
2364
2365 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
2366 let mut selection = self.local_selections::<Point>(cx).last().unwrap().clone();
2367 selection.set_head(Point::zero());
2368 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2369 }
2370
2371 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
2372 let cursor = self.buffer.read(cx).read(cx).len();
2373 let selection = Selection {
2374 id: post_inc(&mut self.next_selection_id),
2375 start: cursor,
2376 end: cursor,
2377 reversed: false,
2378 goal: SelectionGoal::None,
2379 };
2380 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2381 }
2382
2383 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
2384 let mut selection = self.local_selections::<usize>(cx).first().unwrap().clone();
2385 selection.set_head(self.buffer.read(cx).read(cx).len());
2386 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2387 }
2388
2389 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
2390 let selection = Selection {
2391 id: post_inc(&mut self.next_selection_id),
2392 start: 0,
2393 end: self.buffer.read(cx).read(cx).len(),
2394 reversed: false,
2395 goal: SelectionGoal::None,
2396 };
2397 self.update_selections(vec![selection], None, cx);
2398 }
2399
2400 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
2401 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2402 let mut selections = self.local_selections::<Point>(cx);
2403 let max_point = display_map.buffer_snapshot.max_point();
2404 for selection in &mut selections {
2405 let rows = selection.spanned_rows(true, &display_map).buffer_rows;
2406 selection.start = Point::new(rows.start, 0);
2407 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
2408 selection.reversed = false;
2409 }
2410 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2411 }
2412
2413 pub fn split_selection_into_lines(
2414 &mut self,
2415 _: &SplitSelectionIntoLines,
2416 cx: &mut ViewContext<Self>,
2417 ) {
2418 let mut to_unfold = Vec::new();
2419 let mut new_selections = Vec::new();
2420 {
2421 let selections = self.local_selections::<Point>(cx);
2422 let buffer = self.buffer.read(cx).read(cx);
2423 for selection in selections {
2424 for row in selection.start.row..selection.end.row {
2425 let cursor = Point::new(row, buffer.line_len(row));
2426 new_selections.push(Selection {
2427 id: post_inc(&mut self.next_selection_id),
2428 start: cursor,
2429 end: cursor,
2430 reversed: false,
2431 goal: SelectionGoal::None,
2432 });
2433 }
2434 new_selections.push(Selection {
2435 id: selection.id,
2436 start: selection.end,
2437 end: selection.end,
2438 reversed: false,
2439 goal: SelectionGoal::None,
2440 });
2441 to_unfold.push(selection.start..selection.end);
2442 }
2443 }
2444 self.unfold_ranges(to_unfold, cx);
2445 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2446 }
2447
2448 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
2449 self.add_selection(true, cx);
2450 }
2451
2452 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
2453 self.add_selection(false, cx);
2454 }
2455
2456 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
2457 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2458 let mut selections = self.local_selections::<Point>(cx);
2459 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
2460 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
2461 let range = oldest_selection.display_range(&display_map).sorted();
2462 let columns = cmp::min(range.start.column(), range.end.column())
2463 ..cmp::max(range.start.column(), range.end.column());
2464
2465 selections.clear();
2466 let mut stack = Vec::new();
2467 for row in range.start.row()..=range.end.row() {
2468 if let Some(selection) = self.build_columnar_selection(
2469 &display_map,
2470 row,
2471 &columns,
2472 oldest_selection.reversed,
2473 ) {
2474 stack.push(selection.id);
2475 selections.push(selection);
2476 }
2477 }
2478
2479 if above {
2480 stack.reverse();
2481 }
2482
2483 AddSelectionsState { above, stack }
2484 });
2485
2486 let last_added_selection = *state.stack.last().unwrap();
2487 let mut new_selections = Vec::new();
2488 if above == state.above {
2489 let end_row = if above {
2490 0
2491 } else {
2492 display_map.max_point().row()
2493 };
2494
2495 'outer: for selection in selections {
2496 if selection.id == last_added_selection {
2497 let range = selection.display_range(&display_map).sorted();
2498 debug_assert_eq!(range.start.row(), range.end.row());
2499 let mut row = range.start.row();
2500 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
2501 {
2502 start..end
2503 } else {
2504 cmp::min(range.start.column(), range.end.column())
2505 ..cmp::max(range.start.column(), range.end.column())
2506 };
2507
2508 while row != end_row {
2509 if above {
2510 row -= 1;
2511 } else {
2512 row += 1;
2513 }
2514
2515 if let Some(new_selection) = self.build_columnar_selection(
2516 &display_map,
2517 row,
2518 &columns,
2519 selection.reversed,
2520 ) {
2521 state.stack.push(new_selection.id);
2522 if above {
2523 new_selections.push(new_selection);
2524 new_selections.push(selection);
2525 } else {
2526 new_selections.push(selection);
2527 new_selections.push(new_selection);
2528 }
2529
2530 continue 'outer;
2531 }
2532 }
2533 }
2534
2535 new_selections.push(selection);
2536 }
2537 } else {
2538 new_selections = selections;
2539 new_selections.retain(|s| s.id != last_added_selection);
2540 state.stack.pop();
2541 }
2542
2543 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2544 if state.stack.len() > 1 {
2545 self.add_selections_state = Some(state);
2546 }
2547 }
2548
2549 pub fn select_next(&mut self, action: &SelectNext, cx: &mut ViewContext<Self>) {
2550 let replace_newest = action.0;
2551 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2552 let buffer = &display_map.buffer_snapshot;
2553 let mut selections = self.local_selections::<usize>(cx);
2554 if let Some(mut select_next_state) = self.select_next_state.take() {
2555 let query = &select_next_state.query;
2556 if !select_next_state.done {
2557 let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
2558 let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
2559 let mut next_selected_range = None;
2560
2561 let bytes_after_last_selection =
2562 buffer.bytes_in_range(last_selection.end..buffer.len());
2563 let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
2564 let query_matches = query
2565 .stream_find_iter(bytes_after_last_selection)
2566 .map(|result| (last_selection.end, result))
2567 .chain(
2568 query
2569 .stream_find_iter(bytes_before_first_selection)
2570 .map(|result| (0, result)),
2571 );
2572 for (start_offset, query_match) in query_matches {
2573 let query_match = query_match.unwrap(); // can only fail due to I/O
2574 let offset_range =
2575 start_offset + query_match.start()..start_offset + query_match.end();
2576 let display_range = offset_range.start.to_display_point(&display_map)
2577 ..offset_range.end.to_display_point(&display_map);
2578
2579 if !select_next_state.wordwise
2580 || (!movement::is_inside_word(&display_map, display_range.start)
2581 && !movement::is_inside_word(&display_map, display_range.end))
2582 {
2583 next_selected_range = Some(offset_range);
2584 break;
2585 }
2586 }
2587
2588 if let Some(next_selected_range) = next_selected_range {
2589 if replace_newest {
2590 if let Some(newest_id) =
2591 selections.iter().max_by_key(|s| s.id).map(|s| s.id)
2592 {
2593 selections.retain(|s| s.id != newest_id);
2594 }
2595 }
2596 selections.push(Selection {
2597 id: post_inc(&mut self.next_selection_id),
2598 start: next_selected_range.start,
2599 end: next_selected_range.end,
2600 reversed: false,
2601 goal: SelectionGoal::None,
2602 });
2603 selections.sort_unstable_by_key(|s| s.start);
2604 self.update_selections(selections, Some(Autoscroll::Newest), cx);
2605 } else {
2606 select_next_state.done = true;
2607 }
2608 }
2609
2610 self.select_next_state = Some(select_next_state);
2611 } else if selections.len() == 1 {
2612 let selection = selections.last_mut().unwrap();
2613 if selection.start == selection.end {
2614 let word_range = movement::surrounding_word(
2615 &display_map,
2616 selection.start.to_display_point(&display_map),
2617 );
2618 selection.start = word_range.start.to_offset(&display_map, Bias::Left);
2619 selection.end = word_range.end.to_offset(&display_map, Bias::Left);
2620 selection.goal = SelectionGoal::None;
2621 selection.reversed = false;
2622
2623 let query = buffer
2624 .text_for_range(selection.start..selection.end)
2625 .collect::<String>();
2626 let select_state = SelectNextState {
2627 query: AhoCorasick::new_auto_configured(&[query]),
2628 wordwise: true,
2629 done: false,
2630 };
2631 self.update_selections(selections, Some(Autoscroll::Newest), cx);
2632 self.select_next_state = Some(select_state);
2633 } else {
2634 let query = buffer
2635 .text_for_range(selection.start..selection.end)
2636 .collect::<String>();
2637 self.select_next_state = Some(SelectNextState {
2638 query: AhoCorasick::new_auto_configured(&[query]),
2639 wordwise: false,
2640 done: false,
2641 });
2642 self.select_next(action, cx);
2643 }
2644 }
2645 }
2646
2647 pub fn toggle_comments(&mut self, _: &ToggleComments, cx: &mut ViewContext<Self>) {
2648 // Get the line comment prefix. Split its trailing whitespace into a separate string,
2649 // as that portion won't be used for detecting if a line is a comment.
2650 let full_comment_prefix =
2651 if let Some(prefix) = self.language(cx).and_then(|l| l.line_comment_prefix()) {
2652 prefix.to_string()
2653 } else {
2654 return;
2655 };
2656 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
2657 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
2658
2659 self.start_transaction(cx);
2660 let mut selections = self.local_selections::<Point>(cx);
2661 let mut all_selection_lines_are_comments = true;
2662 let mut edit_ranges = Vec::new();
2663 let mut last_toggled_row = None;
2664 self.buffer.update(cx, |buffer, cx| {
2665 for selection in &mut selections {
2666 edit_ranges.clear();
2667 let snapshot = buffer.snapshot(cx);
2668
2669 let end_row =
2670 if selection.end.row > selection.start.row && selection.end.column == 0 {
2671 selection.end.row
2672 } else {
2673 selection.end.row + 1
2674 };
2675
2676 for row in selection.start.row..end_row {
2677 // If multiple selections contain a given row, avoid processing that
2678 // row more than once.
2679 if last_toggled_row == Some(row) {
2680 continue;
2681 } else {
2682 last_toggled_row = Some(row);
2683 }
2684
2685 if snapshot.is_line_blank(row) {
2686 continue;
2687 }
2688
2689 let start = Point::new(row, snapshot.indent_column_for_line(row));
2690 let mut line_bytes = snapshot
2691 .bytes_in_range(start..snapshot.max_point())
2692 .flatten()
2693 .copied();
2694
2695 // If this line currently begins with the line comment prefix, then record
2696 // the range containing the prefix.
2697 if all_selection_lines_are_comments
2698 && line_bytes
2699 .by_ref()
2700 .take(comment_prefix.len())
2701 .eq(comment_prefix.bytes())
2702 {
2703 // Include any whitespace that matches the comment prefix.
2704 let matching_whitespace_len = line_bytes
2705 .zip(comment_prefix_whitespace.bytes())
2706 .take_while(|(a, b)| a == b)
2707 .count() as u32;
2708 let end = Point::new(
2709 row,
2710 start.column + comment_prefix.len() as u32 + matching_whitespace_len,
2711 );
2712 edit_ranges.push(start..end);
2713 }
2714 // If this line does not begin with the line comment prefix, then record
2715 // the position where the prefix should be inserted.
2716 else {
2717 all_selection_lines_are_comments = false;
2718 edit_ranges.push(start..start);
2719 }
2720 }
2721
2722 if !edit_ranges.is_empty() {
2723 if all_selection_lines_are_comments {
2724 buffer.edit(edit_ranges.iter().cloned(), "", cx);
2725 } else {
2726 let min_column = edit_ranges.iter().map(|r| r.start.column).min().unwrap();
2727 let edit_ranges = edit_ranges.iter().map(|range| {
2728 let position = Point::new(range.start.row, min_column);
2729 position..position
2730 });
2731 buffer.edit(edit_ranges, &full_comment_prefix, cx);
2732 }
2733 }
2734 }
2735 });
2736
2737 self.update_selections(
2738 self.local_selections::<usize>(cx),
2739 Some(Autoscroll::Fit),
2740 cx,
2741 );
2742 self.end_transaction(cx);
2743 }
2744
2745 pub fn select_larger_syntax_node(
2746 &mut self,
2747 _: &SelectLargerSyntaxNode,
2748 cx: &mut ViewContext<Self>,
2749 ) {
2750 let old_selections = self.local_selections::<usize>(cx).into_boxed_slice();
2751 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2752 let buffer = self.buffer.read(cx).snapshot(cx);
2753
2754 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
2755 let mut selected_larger_node = false;
2756 let mut new_selections = old_selections
2757 .iter()
2758 .map(|selection| {
2759 let old_range = selection.start..selection.end;
2760 let mut new_range = old_range.clone();
2761 while let Some(containing_range) =
2762 buffer.range_for_syntax_ancestor(new_range.clone())
2763 {
2764 new_range = containing_range;
2765 if !display_map.intersects_fold(new_range.start)
2766 && !display_map.intersects_fold(new_range.end)
2767 {
2768 break;
2769 }
2770 }
2771
2772 selected_larger_node |= new_range != old_range;
2773 Selection {
2774 id: selection.id,
2775 start: new_range.start,
2776 end: new_range.end,
2777 goal: SelectionGoal::None,
2778 reversed: selection.reversed,
2779 }
2780 })
2781 .collect::<Vec<_>>();
2782
2783 if selected_larger_node {
2784 stack.push(old_selections);
2785 new_selections.sort_unstable_by_key(|selection| selection.start);
2786 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2787 }
2788 self.select_larger_syntax_node_stack = stack;
2789 }
2790
2791 pub fn select_smaller_syntax_node(
2792 &mut self,
2793 _: &SelectSmallerSyntaxNode,
2794 cx: &mut ViewContext<Self>,
2795 ) {
2796 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
2797 if let Some(selections) = stack.pop() {
2798 self.update_selections(selections.to_vec(), Some(Autoscroll::Fit), cx);
2799 }
2800 self.select_larger_syntax_node_stack = stack;
2801 }
2802
2803 pub fn move_to_enclosing_bracket(
2804 &mut self,
2805 _: &MoveToEnclosingBracket,
2806 cx: &mut ViewContext<Self>,
2807 ) {
2808 let mut selections = self.local_selections::<usize>(cx);
2809 let buffer = self.buffer.read(cx).snapshot(cx);
2810 for selection in &mut selections {
2811 if let Some((open_range, close_range)) =
2812 buffer.enclosing_bracket_ranges(selection.start..selection.end)
2813 {
2814 let close_range = close_range.to_inclusive();
2815 let destination = if close_range.contains(&selection.start)
2816 && close_range.contains(&selection.end)
2817 {
2818 open_range.end
2819 } else {
2820 *close_range.start()
2821 };
2822 selection.start = destination;
2823 selection.end = destination;
2824 }
2825 }
2826
2827 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2828 }
2829
2830 pub fn show_next_diagnostic(&mut self, _: &ShowNextDiagnostic, cx: &mut ViewContext<Self>) {
2831 let buffer = self.buffer.read(cx).snapshot(cx);
2832 let selection = self.newest_selection::<usize>(&buffer);
2833 let active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
2834 active_diagnostics
2835 .primary_range
2836 .to_offset(&buffer)
2837 .to_inclusive()
2838 });
2839 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
2840 if active_primary_range.contains(&selection.head()) {
2841 *active_primary_range.end()
2842 } else {
2843 selection.head()
2844 }
2845 } else {
2846 selection.head()
2847 };
2848
2849 loop {
2850 let next_group = buffer
2851 .diagnostics_in_range::<_, usize>(search_start..buffer.len())
2852 .find_map(|(provider_name, entry)| {
2853 if entry.diagnostic.is_primary
2854 && !entry.range.is_empty()
2855 && Some(entry.range.end) != active_primary_range.as_ref().map(|r| *r.end())
2856 {
2857 Some((provider_name, entry.range, entry.diagnostic.group_id))
2858 } else {
2859 None
2860 }
2861 });
2862
2863 if let Some((provider_name, primary_range, group_id)) = next_group {
2864 self.activate_diagnostics(provider_name, group_id, cx);
2865 self.update_selections(
2866 vec![Selection {
2867 id: selection.id,
2868 start: primary_range.start,
2869 end: primary_range.start,
2870 reversed: false,
2871 goal: SelectionGoal::None,
2872 }],
2873 Some(Autoscroll::Center),
2874 cx,
2875 );
2876 break;
2877 } else if search_start == 0 {
2878 break;
2879 } else {
2880 // Cycle around to the start of the buffer.
2881 search_start = 0;
2882 }
2883 }
2884 }
2885
2886 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
2887 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
2888 let buffer = self.buffer.read(cx).snapshot(cx);
2889 let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
2890 let is_valid = buffer
2891 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone())
2892 .any(|(_, entry)| {
2893 entry.diagnostic.is_primary
2894 && !entry.range.is_empty()
2895 && entry.range.start == primary_range_start
2896 && entry.diagnostic.message == active_diagnostics.primary_message
2897 });
2898
2899 if is_valid != active_diagnostics.is_valid {
2900 active_diagnostics.is_valid = is_valid;
2901 let mut new_styles = HashMap::default();
2902 for (block_id, diagnostic) in &active_diagnostics.blocks {
2903 new_styles.insert(
2904 *block_id,
2905 diagnostic_block_renderer(
2906 diagnostic.clone(),
2907 is_valid,
2908 self.build_settings.clone(),
2909 ),
2910 );
2911 }
2912 self.display_map
2913 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
2914 }
2915 }
2916 }
2917
2918 fn activate_diagnostics(
2919 &mut self,
2920 provider_name: &str,
2921 group_id: usize,
2922 cx: &mut ViewContext<Self>,
2923 ) {
2924 self.dismiss_diagnostics(cx);
2925 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
2926 let buffer = self.buffer.read(cx).snapshot(cx);
2927
2928 let mut primary_range = None;
2929 let mut primary_message = None;
2930 let mut group_end = Point::zero();
2931 let diagnostic_group = buffer
2932 .diagnostic_group::<Point>(provider_name, group_id)
2933 .map(|entry| {
2934 if entry.range.end > group_end {
2935 group_end = entry.range.end;
2936 }
2937 if entry.diagnostic.is_primary {
2938 primary_range = Some(entry.range.clone());
2939 primary_message = Some(entry.diagnostic.message.clone());
2940 }
2941 entry
2942 })
2943 .collect::<Vec<_>>();
2944 let primary_range = primary_range.unwrap();
2945 let primary_message = primary_message.unwrap();
2946 let primary_range =
2947 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
2948
2949 let blocks = display_map
2950 .insert_blocks(
2951 diagnostic_group.iter().map(|entry| {
2952 let build_settings = self.build_settings.clone();
2953 let diagnostic = entry.diagnostic.clone();
2954 let message_height = diagnostic.message.lines().count() as u8;
2955
2956 BlockProperties {
2957 position: entry.range.start,
2958 height: message_height,
2959 render: diagnostic_block_renderer(diagnostic, true, build_settings),
2960 disposition: BlockDisposition::Below,
2961 }
2962 }),
2963 cx,
2964 )
2965 .into_iter()
2966 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
2967 .collect();
2968
2969 Some(ActiveDiagnosticGroup {
2970 primary_range,
2971 primary_message,
2972 blocks,
2973 is_valid: true,
2974 })
2975 });
2976 }
2977
2978 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
2979 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
2980 self.display_map.update(cx, |display_map, cx| {
2981 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
2982 });
2983 cx.notify();
2984 }
2985 }
2986
2987 fn build_columnar_selection(
2988 &mut self,
2989 display_map: &DisplaySnapshot,
2990 row: u32,
2991 columns: &Range<u32>,
2992 reversed: bool,
2993 ) -> Option<Selection<Point>> {
2994 let is_empty = columns.start == columns.end;
2995 let line_len = display_map.line_len(row);
2996 if columns.start < line_len || (is_empty && columns.start == line_len) {
2997 let start = DisplayPoint::new(row, columns.start);
2998 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
2999 Some(Selection {
3000 id: post_inc(&mut self.next_selection_id),
3001 start: start.to_point(display_map),
3002 end: end.to_point(display_map),
3003 reversed,
3004 goal: SelectionGoal::ColumnRange {
3005 start: columns.start,
3006 end: columns.end,
3007 },
3008 })
3009 } else {
3010 None
3011 }
3012 }
3013
3014 pub fn visible_selections<'a>(
3015 &'a self,
3016 display_rows: Range<u32>,
3017 cx: &'a mut MutableAppContext,
3018 ) -> HashMap<ReplicaId, Vec<Selection<DisplayPoint>>> {
3019 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3020 let buffer = &display_map.buffer_snapshot;
3021
3022 let start = if display_rows.start == 0 {
3023 Anchor::min()
3024 } else {
3025 buffer.anchor_before(
3026 DisplayPoint::new(display_rows.start, 0).to_offset(&display_map, Bias::Left),
3027 )
3028 };
3029 let end = if display_rows.end > display_map.max_point().row() {
3030 Anchor::max()
3031 } else {
3032 buffer.anchor_before(
3033 DisplayPoint::new(display_rows.end, 0).to_offset(&display_map, Bias::Right),
3034 )
3035 };
3036
3037 let start_ix = match self
3038 .selections
3039 .binary_search_by(|probe| probe.end.cmp(&start, &buffer).unwrap())
3040 {
3041 Ok(ix) | Err(ix) => ix,
3042 };
3043 let end_ix = match self
3044 .selections
3045 .binary_search_by(|probe| probe.start.cmp(&end, &buffer).unwrap())
3046 {
3047 Ok(ix) => ix + 1,
3048 Err(ix) => ix,
3049 };
3050
3051 fn display_selection(
3052 selection: &Selection<Anchor>,
3053 display_map: &DisplaySnapshot,
3054 ) -> Selection<DisplayPoint> {
3055 Selection {
3056 id: selection.id,
3057 start: selection.start.to_display_point(&display_map),
3058 end: selection.end.to_display_point(&display_map),
3059 reversed: selection.reversed,
3060 goal: selection.goal,
3061 }
3062 }
3063
3064 let mut result = HashMap::default();
3065
3066 result.insert(
3067 self.replica_id(cx),
3068 self.selections[start_ix..end_ix]
3069 .iter()
3070 .chain(
3071 self.pending_selection
3072 .as_ref()
3073 .map(|pending| &pending.selection),
3074 )
3075 .map(|s| display_selection(s, &display_map))
3076 .collect(),
3077 );
3078
3079 for (replica_id, selection) in display_map
3080 .buffer_snapshot
3081 .remote_selections_in_range(&(start..end))
3082 {
3083 result
3084 .entry(replica_id)
3085 .or_insert(Vec::new())
3086 .push(display_selection(&selection, &display_map));
3087 }
3088
3089 result
3090 }
3091
3092 pub fn local_selections<'a, D>(&self, cx: &'a AppContext) -> Vec<Selection<D>>
3093 where
3094 D: 'a + TextDimension + Ord + Sub<D, Output = D>,
3095 {
3096 let buffer = self.buffer.read(cx).snapshot(cx);
3097 let mut selections = self
3098 .resolve_selections::<D, _>(self.selections.iter(), &buffer)
3099 .peekable();
3100
3101 let mut pending_selection = self.pending_selection::<D>(&buffer);
3102
3103 iter::from_fn(move || {
3104 if let Some(pending) = pending_selection.as_mut() {
3105 while let Some(next_selection) = selections.peek() {
3106 if pending.start <= next_selection.end && pending.end >= next_selection.start {
3107 let next_selection = selections.next().unwrap();
3108 if next_selection.start < pending.start {
3109 pending.start = next_selection.start;
3110 }
3111 if next_selection.end > pending.end {
3112 pending.end = next_selection.end;
3113 }
3114 } else if next_selection.end < pending.start {
3115 return selections.next();
3116 } else {
3117 break;
3118 }
3119 }
3120
3121 pending_selection.take()
3122 } else {
3123 selections.next()
3124 }
3125 })
3126 .collect()
3127 }
3128
3129 pub fn local_anchor_selections(&self) -> &Arc<[Selection<Anchor>]> {
3130 &self.selections
3131 }
3132
3133 fn resolve_selections<'a, D, I>(
3134 &self,
3135 selections: I,
3136 snapshot: &MultiBufferSnapshot,
3137 ) -> impl 'a + Iterator<Item = Selection<D>>
3138 where
3139 D: TextDimension + Ord + Sub<D, Output = D>,
3140 I: 'a + IntoIterator<Item = &'a Selection<Anchor>>,
3141 {
3142 let (to_summarize, selections) = selections.into_iter().tee();
3143 let mut summaries = snapshot
3144 .summaries_for_anchors::<D, _>(to_summarize.flat_map(|s| [&s.start, &s.end]))
3145 .into_iter();
3146 selections.map(move |s| Selection {
3147 id: s.id,
3148 start: summaries.next().unwrap(),
3149 end: summaries.next().unwrap(),
3150 reversed: s.reversed,
3151 goal: s.goal,
3152 })
3153 }
3154
3155 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3156 &self,
3157 snapshot: &MultiBufferSnapshot,
3158 ) -> Option<Selection<D>> {
3159 self.pending_selection
3160 .as_ref()
3161 .map(|pending| self.resolve_selection(&pending.selection, &snapshot))
3162 }
3163
3164 fn resolve_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3165 &self,
3166 selection: &Selection<Anchor>,
3167 buffer: &MultiBufferSnapshot,
3168 ) -> Selection<D> {
3169 Selection {
3170 id: selection.id,
3171 start: selection.start.summary::<D>(&buffer),
3172 end: selection.end.summary::<D>(&buffer),
3173 reversed: selection.reversed,
3174 goal: selection.goal,
3175 }
3176 }
3177
3178 fn selection_count<'a>(&self) -> usize {
3179 let mut count = self.selections.len();
3180 if self.pending_selection.is_some() {
3181 count += 1;
3182 }
3183 count
3184 }
3185
3186 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3187 &self,
3188 snapshot: &MultiBufferSnapshot,
3189 ) -> Selection<D> {
3190 self.selections
3191 .iter()
3192 .min_by_key(|s| s.id)
3193 .map(|selection| self.resolve_selection(selection, snapshot))
3194 .or_else(|| self.pending_selection(snapshot))
3195 .unwrap()
3196 }
3197
3198 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3199 &self,
3200 snapshot: &MultiBufferSnapshot,
3201 ) -> Selection<D> {
3202 self.pending_selection(snapshot)
3203 .or_else(|| {
3204 self.selections
3205 .iter()
3206 .min_by_key(|s| s.id)
3207 .map(|selection| self.resolve_selection(selection, snapshot))
3208 })
3209 .unwrap()
3210 }
3211
3212 pub fn update_selections<T>(
3213 &mut self,
3214 mut selections: Vec<Selection<T>>,
3215 autoscroll: Option<Autoscroll>,
3216 cx: &mut ViewContext<Self>,
3217 ) where
3218 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
3219 {
3220 // Merge overlapping selections.
3221 let buffer = self.buffer.read(cx).snapshot(cx);
3222 let mut i = 1;
3223 while i < selections.len() {
3224 if selections[i - 1].end >= selections[i].start {
3225 let removed = selections.remove(i);
3226 if removed.start < selections[i - 1].start {
3227 selections[i - 1].start = removed.start;
3228 }
3229 if removed.end > selections[i - 1].end {
3230 selections[i - 1].end = removed.end;
3231 }
3232 } else {
3233 i += 1;
3234 }
3235 }
3236
3237 self.pending_selection = None;
3238 self.add_selections_state = None;
3239 self.select_next_state = None;
3240 self.select_larger_syntax_node_stack.clear();
3241 while let Some(autoclose_pair) = self.autoclose_stack.last() {
3242 let all_selections_inside_autoclose_ranges =
3243 if selections.len() == autoclose_pair.ranges.len() {
3244 selections
3245 .iter()
3246 .zip(autoclose_pair.ranges.iter().map(|r| r.to_point(&buffer)))
3247 .all(|(selection, autoclose_range)| {
3248 let head = selection.head().to_point(&buffer);
3249 autoclose_range.start <= head && autoclose_range.end >= head
3250 })
3251 } else {
3252 false
3253 };
3254
3255 if all_selections_inside_autoclose_ranges {
3256 break;
3257 } else {
3258 self.autoclose_stack.pop();
3259 }
3260 }
3261
3262 if let Some(autoscroll) = autoscroll {
3263 self.request_autoscroll(autoscroll, cx);
3264 }
3265 self.pause_cursor_blinking(cx);
3266
3267 self.set_selections(
3268 Arc::from_iter(selections.into_iter().map(|selection| Selection {
3269 id: selection.id,
3270 start: buffer.anchor_before(selection.start),
3271 end: buffer.anchor_before(selection.end),
3272 reversed: selection.reversed,
3273 goal: selection.goal,
3274 })),
3275 cx,
3276 );
3277 }
3278
3279 fn set_selections(&mut self, selections: Arc<[Selection<Anchor>]>, cx: &mut ViewContext<Self>) {
3280 self.selections = selections;
3281 self.buffer.update(cx, |buffer, cx| {
3282 buffer.set_active_selections(&self.selections, cx)
3283 });
3284 }
3285
3286 fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
3287 self.autoscroll_request = Some(autoscroll);
3288 cx.notify();
3289 }
3290
3291 fn start_transaction(&mut self, cx: &mut ViewContext<Self>) {
3292 self.start_transaction_at(Instant::now(), cx);
3293 }
3294
3295 fn start_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
3296 self.end_selection(cx);
3297 if let Some(tx_id) = self
3298 .buffer
3299 .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
3300 {
3301 self.selection_history
3302 .insert(tx_id, (self.selections.clone(), None));
3303 }
3304 }
3305
3306 fn end_transaction(&mut self, cx: &mut ViewContext<Self>) {
3307 self.end_transaction_at(Instant::now(), cx);
3308 }
3309
3310 fn end_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
3311 if let Some(tx_id) = self
3312 .buffer
3313 .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
3314 {
3315 self.selection_history.get_mut(&tx_id).unwrap().1 = Some(self.selections.clone());
3316 }
3317 }
3318
3319 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
3320 log::info!("Editor::page_up");
3321 }
3322
3323 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
3324 log::info!("Editor::page_down");
3325 }
3326
3327 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
3328 let mut fold_ranges = Vec::new();
3329
3330 let selections = self.local_selections::<Point>(cx);
3331 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3332 for selection in selections {
3333 let range = selection.display_range(&display_map).sorted();
3334 let buffer_start_row = range.start.to_point(&display_map).row;
3335
3336 for row in (0..=range.end.row()).rev() {
3337 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
3338 let fold_range = self.foldable_range_for_line(&display_map, row);
3339 if fold_range.end.row >= buffer_start_row {
3340 fold_ranges.push(fold_range);
3341 if row <= range.start.row() {
3342 break;
3343 }
3344 }
3345 }
3346 }
3347 }
3348
3349 self.fold_ranges(fold_ranges, cx);
3350 }
3351
3352 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
3353 let selections = self.local_selections::<Point>(cx);
3354 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3355 let buffer = &display_map.buffer_snapshot;
3356 let ranges = selections
3357 .iter()
3358 .map(|s| {
3359 let range = s.display_range(&display_map).sorted();
3360 let mut start = range.start.to_point(&display_map);
3361 let mut end = range.end.to_point(&display_map);
3362 start.column = 0;
3363 end.column = buffer.line_len(end.row);
3364 start..end
3365 })
3366 .collect::<Vec<_>>();
3367 self.unfold_ranges(ranges, cx);
3368 }
3369
3370 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
3371 let max_point = display_map.max_point();
3372 if display_row >= max_point.row() {
3373 false
3374 } else {
3375 let (start_indent, is_blank) = display_map.line_indent(display_row);
3376 if is_blank {
3377 false
3378 } else {
3379 for display_row in display_row + 1..=max_point.row() {
3380 let (indent, is_blank) = display_map.line_indent(display_row);
3381 if !is_blank {
3382 return indent > start_indent;
3383 }
3384 }
3385 false
3386 }
3387 }
3388 }
3389
3390 fn foldable_range_for_line(
3391 &self,
3392 display_map: &DisplaySnapshot,
3393 start_row: u32,
3394 ) -> Range<Point> {
3395 let max_point = display_map.max_point();
3396
3397 let (start_indent, _) = display_map.line_indent(start_row);
3398 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
3399 let mut end = None;
3400 for row in start_row + 1..=max_point.row() {
3401 let (indent, is_blank) = display_map.line_indent(row);
3402 if !is_blank && indent <= start_indent {
3403 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
3404 break;
3405 }
3406 }
3407
3408 let end = end.unwrap_or(max_point);
3409 return start.to_point(display_map)..end.to_point(display_map);
3410 }
3411
3412 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
3413 let selections = self.local_selections::<Point>(cx);
3414 let ranges = selections.into_iter().map(|s| s.start..s.end);
3415 self.fold_ranges(ranges, cx);
3416 }
3417
3418 fn fold_ranges<T: ToOffset>(
3419 &mut self,
3420 ranges: impl IntoIterator<Item = Range<T>>,
3421 cx: &mut ViewContext<Self>,
3422 ) {
3423 let mut ranges = ranges.into_iter().peekable();
3424 if ranges.peek().is_some() {
3425 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
3426 self.request_autoscroll(Autoscroll::Fit, cx);
3427 cx.notify();
3428 }
3429 }
3430
3431 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
3432 if !ranges.is_empty() {
3433 self.display_map
3434 .update(cx, |map, cx| map.unfold(ranges, cx));
3435 self.request_autoscroll(Autoscroll::Fit, cx);
3436 cx.notify();
3437 }
3438 }
3439
3440 pub fn insert_blocks<P>(
3441 &mut self,
3442 blocks: impl IntoIterator<Item = BlockProperties<P>>,
3443 cx: &mut ViewContext<Self>,
3444 ) -> Vec<BlockId>
3445 where
3446 P: ToOffset + Clone,
3447 {
3448 let blocks = self
3449 .display_map
3450 .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
3451 self.request_autoscroll(Autoscroll::Fit, cx);
3452 blocks
3453 }
3454
3455 pub fn replace_blocks(
3456 &mut self,
3457 blocks: HashMap<BlockId, RenderBlock>,
3458 cx: &mut ViewContext<Self>,
3459 ) {
3460 self.display_map
3461 .update(cx, |display_map, _| display_map.replace_blocks(blocks));
3462 self.request_autoscroll(Autoscroll::Fit, cx);
3463 }
3464
3465 pub fn remove_blocks(&mut self, block_ids: HashSet<BlockId>, cx: &mut ViewContext<Self>) {
3466 self.display_map.update(cx, |display_map, cx| {
3467 display_map.remove_blocks(block_ids, cx)
3468 });
3469 }
3470
3471 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
3472 self.display_map
3473 .update(cx, |map, cx| map.snapshot(cx))
3474 .longest_row()
3475 }
3476
3477 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
3478 self.display_map
3479 .update(cx, |map, cx| map.snapshot(cx))
3480 .max_point()
3481 }
3482
3483 pub fn text(&self, cx: &AppContext) -> String {
3484 self.buffer.read(cx).read(cx).text()
3485 }
3486
3487 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
3488 self.display_map
3489 .update(cx, |map, cx| map.snapshot(cx))
3490 .text()
3491 }
3492
3493 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
3494 self.display_map
3495 .update(cx, |map, cx| map.set_wrap_width(width, cx))
3496 }
3497
3498 pub fn set_highlighted_row(&mut self, row: Option<u32>) {
3499 self.highlighted_row = row;
3500 }
3501
3502 pub fn highlighted_row(&mut self) -> Option<u32> {
3503 self.highlighted_row
3504 }
3505
3506 fn next_blink_epoch(&mut self) -> usize {
3507 self.blink_epoch += 1;
3508 self.blink_epoch
3509 }
3510
3511 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
3512 self.show_local_cursors = true;
3513 cx.notify();
3514
3515 let epoch = self.next_blink_epoch();
3516 cx.spawn(|this, mut cx| {
3517 let this = this.downgrade();
3518 async move {
3519 Timer::after(CURSOR_BLINK_INTERVAL).await;
3520 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
3521 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
3522 }
3523 }
3524 })
3525 .detach();
3526 }
3527
3528 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
3529 if epoch == self.blink_epoch {
3530 self.blinking_paused = false;
3531 self.blink_cursors(epoch, cx);
3532 }
3533 }
3534
3535 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
3536 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
3537 self.show_local_cursors = !self.show_local_cursors;
3538 cx.notify();
3539
3540 let epoch = self.next_blink_epoch();
3541 cx.spawn(|this, mut cx| {
3542 let this = this.downgrade();
3543 async move {
3544 Timer::after(CURSOR_BLINK_INTERVAL).await;
3545 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
3546 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
3547 }
3548 }
3549 })
3550 .detach();
3551 }
3552 }
3553
3554 pub fn show_local_cursors(&self) -> bool {
3555 self.show_local_cursors
3556 }
3557
3558 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
3559 self.refresh_active_diagnostics(cx);
3560 cx.notify();
3561 }
3562
3563 fn on_buffer_event(
3564 &mut self,
3565 _: ModelHandle<MultiBuffer>,
3566 event: &language::Event,
3567 cx: &mut ViewContext<Self>,
3568 ) {
3569 match event {
3570 language::Event::Edited => cx.emit(Event::Edited),
3571 language::Event::Dirtied => cx.emit(Event::Dirtied),
3572 language::Event::Saved => cx.emit(Event::Saved),
3573 language::Event::FileHandleChanged => cx.emit(Event::FileHandleChanged),
3574 language::Event::Reloaded => cx.emit(Event::FileHandleChanged),
3575 language::Event::Closed => cx.emit(Event::Closed),
3576 _ => {}
3577 }
3578 }
3579
3580 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
3581 cx.notify();
3582 }
3583}
3584
3585impl EditorSnapshot {
3586 pub fn is_focused(&self) -> bool {
3587 self.is_focused
3588 }
3589
3590 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
3591 self.placeholder_text.as_ref()
3592 }
3593
3594 pub fn scroll_position(&self) -> Vector2F {
3595 compute_scroll_position(
3596 &self.display_snapshot,
3597 self.scroll_position,
3598 &self.scroll_top_anchor,
3599 )
3600 }
3601}
3602
3603impl Deref for EditorSnapshot {
3604 type Target = DisplaySnapshot;
3605
3606 fn deref(&self) -> &Self::Target {
3607 &self.display_snapshot
3608 }
3609}
3610
3611impl EditorSettings {
3612 #[cfg(any(test, feature = "test-support"))]
3613 pub fn test(cx: &AppContext) -> Self {
3614 Self {
3615 tab_size: 4,
3616 soft_wrap: SoftWrap::None,
3617 style: {
3618 let font_cache: &gpui::FontCache = cx.font_cache();
3619 let font_family_name = Arc::from("Monaco");
3620 let font_properties = Default::default();
3621 let font_family_id = font_cache.load_family(&[&font_family_name]).unwrap();
3622 let font_id = font_cache
3623 .select_font(font_family_id, &font_properties)
3624 .unwrap();
3625 EditorStyle {
3626 text: gpui::fonts::TextStyle {
3627 font_family_name,
3628 font_family_id,
3629 font_id,
3630 font_size: 14.,
3631 color: gpui::color::Color::from_u32(0xff0000ff),
3632 font_properties,
3633 underline: None,
3634 },
3635 placeholder_text: None,
3636 background: Default::default(),
3637 gutter_background: Default::default(),
3638 active_line_background: Default::default(),
3639 highlighted_line_background: Default::default(),
3640 line_number: Default::default(),
3641 line_number_active: Default::default(),
3642 selection: Default::default(),
3643 guest_selections: Default::default(),
3644 syntax: Default::default(),
3645 error_diagnostic: Default::default(),
3646 invalid_error_diagnostic: Default::default(),
3647 warning_diagnostic: Default::default(),
3648 invalid_warning_diagnostic: Default::default(),
3649 information_diagnostic: Default::default(),
3650 invalid_information_diagnostic: Default::default(),
3651 hint_diagnostic: Default::default(),
3652 invalid_hint_diagnostic: Default::default(),
3653 }
3654 },
3655 }
3656 }
3657}
3658
3659fn compute_scroll_position(
3660 snapshot: &DisplaySnapshot,
3661 mut scroll_position: Vector2F,
3662 scroll_top_anchor: &Anchor,
3663) -> Vector2F {
3664 let scroll_top = scroll_top_anchor.to_display_point(snapshot).row() as f32;
3665 scroll_position.set_y(scroll_top + scroll_position.y());
3666 scroll_position
3667}
3668
3669#[derive(Copy, Clone)]
3670pub enum Event {
3671 Activate,
3672 Edited,
3673 Blurred,
3674 Dirtied,
3675 Saved,
3676 FileHandleChanged,
3677 Closed,
3678}
3679
3680impl Entity for Editor {
3681 type Event = Event;
3682}
3683
3684impl View for Editor {
3685 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
3686 let settings = (self.build_settings)(cx);
3687 self.display_map.update(cx, |map, cx| {
3688 map.set_font(
3689 settings.style.text.font_id,
3690 settings.style.text.font_size,
3691 cx,
3692 )
3693 });
3694 EditorElement::new(self.handle.clone(), settings).boxed()
3695 }
3696
3697 fn ui_name() -> &'static str {
3698 "Editor"
3699 }
3700
3701 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
3702 self.focused = true;
3703 self.blink_cursors(self.blink_epoch, cx);
3704 self.buffer.update(cx, |buffer, cx| {
3705 buffer.set_active_selections(&self.selections, cx)
3706 });
3707 }
3708
3709 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
3710 self.focused = false;
3711 self.show_local_cursors = false;
3712 self.buffer
3713 .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
3714 cx.emit(Event::Blurred);
3715 cx.notify();
3716 }
3717
3718 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
3719 let mut cx = Self::default_keymap_context();
3720 let mode = match self.mode {
3721 EditorMode::SingleLine => "single_line",
3722 EditorMode::AutoHeight { .. } => "auto_height",
3723 EditorMode::Full => "full",
3724 };
3725 cx.map.insert("mode".into(), mode.into());
3726 cx
3727 }
3728}
3729
3730impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
3731 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
3732 let start = self.start.to_point(buffer);
3733 let end = self.end.to_point(buffer);
3734 if self.reversed {
3735 end..start
3736 } else {
3737 start..end
3738 }
3739 }
3740
3741 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
3742 let start = self.start.to_offset(buffer);
3743 let end = self.end.to_offset(buffer);
3744 if self.reversed {
3745 end..start
3746 } else {
3747 start..end
3748 }
3749 }
3750
3751 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
3752 let start = self
3753 .start
3754 .to_point(&map.buffer_snapshot)
3755 .to_display_point(map);
3756 let end = self
3757 .end
3758 .to_point(&map.buffer_snapshot)
3759 .to_display_point(map);
3760 if self.reversed {
3761 end..start
3762 } else {
3763 start..end
3764 }
3765 }
3766
3767 fn spanned_rows(
3768 &self,
3769 include_end_if_at_line_start: bool,
3770 map: &DisplaySnapshot,
3771 ) -> SpannedRows {
3772 let display_start = self
3773 .start
3774 .to_point(&map.buffer_snapshot)
3775 .to_display_point(map);
3776 let mut display_end = self
3777 .end
3778 .to_point(&map.buffer_snapshot)
3779 .to_display_point(map);
3780 if !include_end_if_at_line_start
3781 && display_end.row() != map.max_point().row()
3782 && display_start.row() != display_end.row()
3783 && display_end.column() == 0
3784 {
3785 *display_end.row_mut() -= 1;
3786 }
3787
3788 let (display_start, buffer_start) = map.prev_row_boundary(display_start);
3789 let (display_end, buffer_end) = map.next_row_boundary(display_end);
3790
3791 SpannedRows {
3792 buffer_rows: buffer_start.row..buffer_end.row + 1,
3793 display_rows: display_start.row()..display_end.row() + 1,
3794 }
3795 }
3796}
3797
3798pub fn diagnostic_block_renderer(
3799 diagnostic: Diagnostic,
3800 is_valid: bool,
3801 build_settings: BuildSettings,
3802) -> RenderBlock {
3803 Arc::new(move |cx: &BlockContext| {
3804 let settings = build_settings(cx);
3805 let mut text_style = settings.style.text.clone();
3806 text_style.color = diagnostic_style(diagnostic.severity, is_valid, &settings.style).text;
3807 Text::new(diagnostic.message.clone(), text_style)
3808 .contained()
3809 .with_margin_left(cx.anchor_x)
3810 .boxed()
3811 })
3812}
3813
3814pub fn diagnostic_header_renderer(
3815 buffer: ModelHandle<Buffer>,
3816 diagnostic: Diagnostic,
3817 is_valid: bool,
3818 build_settings: BuildSettings,
3819) -> RenderBlock {
3820 Arc::new(move |cx| {
3821 let settings = build_settings(cx);
3822 let mut text_style = settings.style.text.clone();
3823 text_style.color = diagnostic_style(diagnostic.severity, is_valid, &settings.style).text;
3824 let file_path = if let Some(file) = buffer.read(&**cx).file() {
3825 file.path().to_string_lossy().to_string()
3826 } else {
3827 "untitled".to_string()
3828 };
3829
3830 Flex::column()
3831 .with_child(Label::new(diagnostic.message.clone(), text_style).boxed())
3832 .with_child(Label::new(file_path, settings.style.text.clone()).boxed())
3833 .boxed()
3834 })
3835}
3836
3837pub fn context_header_renderer(build_settings: BuildSettings) -> RenderBlock {
3838 Arc::new(move |cx| {
3839 let settings = build_settings(cx);
3840 let text_style = settings.style.text.clone();
3841 Label::new("...".to_string(), text_style).boxed()
3842 })
3843}
3844
3845pub fn diagnostic_style(
3846 severity: DiagnosticSeverity,
3847 valid: bool,
3848 style: &EditorStyle,
3849) -> DiagnosticStyle {
3850 match (severity, valid) {
3851 (DiagnosticSeverity::ERROR, true) => style.error_diagnostic,
3852 (DiagnosticSeverity::ERROR, false) => style.invalid_error_diagnostic,
3853 (DiagnosticSeverity::WARNING, true) => style.warning_diagnostic,
3854 (DiagnosticSeverity::WARNING, false) => style.invalid_warning_diagnostic,
3855 (DiagnosticSeverity::INFORMATION, true) => style.information_diagnostic,
3856 (DiagnosticSeverity::INFORMATION, false) => style.invalid_information_diagnostic,
3857 (DiagnosticSeverity::HINT, true) => style.hint_diagnostic,
3858 (DiagnosticSeverity::HINT, false) => style.invalid_hint_diagnostic,
3859 _ => Default::default(),
3860 }
3861}
3862
3863pub fn settings_builder(
3864 buffer: WeakModelHandle<MultiBuffer>,
3865 settings: watch::Receiver<workspace::Settings>,
3866) -> BuildSettings {
3867 Arc::new(move |cx| {
3868 let settings = settings.borrow();
3869 let font_cache = cx.font_cache();
3870 let font_family_id = settings.buffer_font_family;
3871 let font_family_name = cx.font_cache().family_name(font_family_id).unwrap();
3872 let font_properties = Default::default();
3873 let font_id = font_cache
3874 .select_font(font_family_id, &font_properties)
3875 .unwrap();
3876 let font_size = settings.buffer_font_size;
3877
3878 let mut theme = settings.theme.editor.clone();
3879 theme.text = TextStyle {
3880 color: theme.text.color,
3881 font_family_name,
3882 font_family_id,
3883 font_id,
3884 font_size,
3885 font_properties,
3886 underline: None,
3887 };
3888 let language = buffer.upgrade(cx).and_then(|buf| buf.read(cx).language(cx));
3889 let soft_wrap = match settings.soft_wrap(language) {
3890 workspace::settings::SoftWrap::None => SoftWrap::None,
3891 workspace::settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
3892 workspace::settings::SoftWrap::PreferredLineLength => {
3893 SoftWrap::Column(settings.preferred_line_length(language).saturating_sub(1))
3894 }
3895 };
3896
3897 EditorSettings {
3898 tab_size: settings.tab_size,
3899 soft_wrap,
3900 style: theme,
3901 }
3902 })
3903}
3904
3905#[cfg(test)]
3906mod tests {
3907 use super::*;
3908 use language::LanguageConfig;
3909 use std::time::Instant;
3910 use text::Point;
3911 use unindent::Unindent;
3912 use util::test::sample_text;
3913
3914 #[gpui::test]
3915 fn test_undo_redo_with_selection_restoration(cx: &mut MutableAppContext) {
3916 let mut now = Instant::now();
3917 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
3918 let group_interval = buffer.read(cx).transaction_group_interval();
3919 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
3920 let settings = EditorSettings::test(cx);
3921 let (_, editor) = cx.add_window(Default::default(), |cx| {
3922 build_editor(buffer.clone(), settings, cx)
3923 });
3924
3925 editor.update(cx, |editor, cx| {
3926 editor.start_transaction_at(now, cx);
3927 editor.select_ranges([2..4], None, cx);
3928 editor.insert("cd", cx);
3929 editor.end_transaction_at(now, cx);
3930 assert_eq!(editor.text(cx), "12cd56");
3931 assert_eq!(editor.selected_ranges(cx), vec![4..4]);
3932
3933 editor.start_transaction_at(now, cx);
3934 editor.select_ranges([4..5], None, cx);
3935 editor.insert("e", cx);
3936 editor.end_transaction_at(now, cx);
3937 assert_eq!(editor.text(cx), "12cde6");
3938 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
3939
3940 now += group_interval + Duration::from_millis(1);
3941 editor.select_ranges([2..2], None, cx);
3942
3943 // Simulate an edit in another editor
3944 buffer.update(cx, |buffer, cx| {
3945 buffer.start_transaction_at(now, cx);
3946 buffer.edit([0..1], "a", cx);
3947 buffer.edit([1..1], "b", cx);
3948 buffer.end_transaction_at(now, cx);
3949 });
3950
3951 assert_eq!(editor.text(cx), "ab2cde6");
3952 assert_eq!(editor.selected_ranges(cx), vec![3..3]);
3953
3954 // Last transaction happened past the group interval in a different editor.
3955 // Undo it individually and don't restore selections.
3956 editor.undo(&Undo, cx);
3957 assert_eq!(editor.text(cx), "12cde6");
3958 assert_eq!(editor.selected_ranges(cx), vec![2..2]);
3959
3960 // First two transactions happened within the group interval in this editor.
3961 // Undo them together and restore selections.
3962 editor.undo(&Undo, cx);
3963 editor.undo(&Undo, cx); // Undo stack is empty here, so this is a no-op.
3964 assert_eq!(editor.text(cx), "123456");
3965 assert_eq!(editor.selected_ranges(cx), vec![0..0]);
3966
3967 // Redo the first two transactions together.
3968 editor.redo(&Redo, cx);
3969 assert_eq!(editor.text(cx), "12cde6");
3970 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
3971
3972 // Redo the last transaction on its own.
3973 editor.redo(&Redo, cx);
3974 assert_eq!(editor.text(cx), "ab2cde6");
3975 assert_eq!(editor.selected_ranges(cx), vec![6..6]);
3976
3977 // Test empty transactions.
3978 editor.start_transaction_at(now, cx);
3979 editor.end_transaction_at(now, cx);
3980 editor.undo(&Undo, cx);
3981 assert_eq!(editor.text(cx), "12cde6");
3982 });
3983 }
3984
3985 #[gpui::test]
3986 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
3987 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
3988 let settings = EditorSettings::test(cx);
3989 let (_, editor) =
3990 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3991
3992 editor.update(cx, |view, cx| {
3993 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
3994 });
3995
3996 assert_eq!(
3997 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
3998 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
3999 );
4000
4001 editor.update(cx, |view, cx| {
4002 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
4003 });
4004
4005 assert_eq!(
4006 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4007 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
4008 );
4009
4010 editor.update(cx, |view, cx| {
4011 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
4012 });
4013
4014 assert_eq!(
4015 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4016 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
4017 );
4018
4019 editor.update(cx, |view, cx| {
4020 view.end_selection(cx);
4021 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
4022 });
4023
4024 assert_eq!(
4025 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4026 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
4027 );
4028
4029 editor.update(cx, |view, cx| {
4030 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
4031 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
4032 });
4033
4034 assert_eq!(
4035 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4036 [
4037 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
4038 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
4039 ]
4040 );
4041
4042 editor.update(cx, |view, cx| {
4043 view.end_selection(cx);
4044 });
4045
4046 assert_eq!(
4047 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4048 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
4049 );
4050 }
4051
4052 #[gpui::test]
4053 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
4054 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
4055 let settings = EditorSettings::test(cx);
4056 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4057
4058 view.update(cx, |view, cx| {
4059 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
4060 assert_eq!(
4061 view.selected_display_ranges(cx),
4062 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
4063 );
4064 });
4065
4066 view.update(cx, |view, cx| {
4067 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
4068 assert_eq!(
4069 view.selected_display_ranges(cx),
4070 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
4071 );
4072 });
4073
4074 view.update(cx, |view, cx| {
4075 view.cancel(&Cancel, cx);
4076 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
4077 assert_eq!(
4078 view.selected_display_ranges(cx),
4079 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
4080 );
4081 });
4082 }
4083
4084 #[gpui::test]
4085 fn test_cancel(cx: &mut gpui::MutableAppContext) {
4086 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
4087 let settings = EditorSettings::test(cx);
4088 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4089
4090 view.update(cx, |view, cx| {
4091 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
4092 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
4093 view.end_selection(cx);
4094
4095 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
4096 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
4097 view.end_selection(cx);
4098 assert_eq!(
4099 view.selected_display_ranges(cx),
4100 [
4101 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
4102 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
4103 ]
4104 );
4105 });
4106
4107 view.update(cx, |view, cx| {
4108 view.cancel(&Cancel, cx);
4109 assert_eq!(
4110 view.selected_display_ranges(cx),
4111 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
4112 );
4113 });
4114
4115 view.update(cx, |view, cx| {
4116 view.cancel(&Cancel, cx);
4117 assert_eq!(
4118 view.selected_display_ranges(cx),
4119 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
4120 );
4121 });
4122 }
4123
4124 #[gpui::test]
4125 fn test_fold(cx: &mut gpui::MutableAppContext) {
4126 let buffer = MultiBuffer::build_simple(
4127 &"
4128 impl Foo {
4129 // Hello!
4130
4131 fn a() {
4132 1
4133 }
4134
4135 fn b() {
4136 2
4137 }
4138
4139 fn c() {
4140 3
4141 }
4142 }
4143 "
4144 .unindent(),
4145 cx,
4146 );
4147 let settings = EditorSettings::test(&cx);
4148 let (_, view) = cx.add_window(Default::default(), |cx| {
4149 build_editor(buffer.clone(), settings, cx)
4150 });
4151
4152 view.update(cx, |view, cx| {
4153 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx)
4154 .unwrap();
4155 view.fold(&Fold, cx);
4156 assert_eq!(
4157 view.display_text(cx),
4158 "
4159 impl Foo {
4160 // Hello!
4161
4162 fn a() {
4163 1
4164 }
4165
4166 fn b() {…
4167 }
4168
4169 fn c() {…
4170 }
4171 }
4172 "
4173 .unindent(),
4174 );
4175
4176 view.fold(&Fold, cx);
4177 assert_eq!(
4178 view.display_text(cx),
4179 "
4180 impl Foo {…
4181 }
4182 "
4183 .unindent(),
4184 );
4185
4186 view.unfold(&Unfold, cx);
4187 assert_eq!(
4188 view.display_text(cx),
4189 "
4190 impl Foo {
4191 // Hello!
4192
4193 fn a() {
4194 1
4195 }
4196
4197 fn b() {…
4198 }
4199
4200 fn c() {…
4201 }
4202 }
4203 "
4204 .unindent(),
4205 );
4206
4207 view.unfold(&Unfold, cx);
4208 assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text());
4209 });
4210 }
4211
4212 #[gpui::test]
4213 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
4214 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
4215 let settings = EditorSettings::test(&cx);
4216 let (_, view) = cx.add_window(Default::default(), |cx| {
4217 build_editor(buffer.clone(), settings, cx)
4218 });
4219
4220 buffer.update(cx, |buffer, cx| {
4221 buffer.edit(
4222 vec![
4223 Point::new(1, 0)..Point::new(1, 0),
4224 Point::new(1, 1)..Point::new(1, 1),
4225 ],
4226 "\t",
4227 cx,
4228 );
4229 });
4230
4231 view.update(cx, |view, cx| {
4232 assert_eq!(
4233 view.selected_display_ranges(cx),
4234 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
4235 );
4236
4237 view.move_down(&MoveDown, cx);
4238 assert_eq!(
4239 view.selected_display_ranges(cx),
4240 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
4241 );
4242
4243 view.move_right(&MoveRight, cx);
4244 assert_eq!(
4245 view.selected_display_ranges(cx),
4246 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
4247 );
4248
4249 view.move_left(&MoveLeft, cx);
4250 assert_eq!(
4251 view.selected_display_ranges(cx),
4252 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
4253 );
4254
4255 view.move_up(&MoveUp, cx);
4256 assert_eq!(
4257 view.selected_display_ranges(cx),
4258 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
4259 );
4260
4261 view.move_to_end(&MoveToEnd, cx);
4262 assert_eq!(
4263 view.selected_display_ranges(cx),
4264 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
4265 );
4266
4267 view.move_to_beginning(&MoveToBeginning, cx);
4268 assert_eq!(
4269 view.selected_display_ranges(cx),
4270 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
4271 );
4272
4273 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx)
4274 .unwrap();
4275 view.select_to_beginning(&SelectToBeginning, cx);
4276 assert_eq!(
4277 view.selected_display_ranges(cx),
4278 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
4279 );
4280
4281 view.select_to_end(&SelectToEnd, cx);
4282 assert_eq!(
4283 view.selected_display_ranges(cx),
4284 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
4285 );
4286 });
4287 }
4288
4289 #[gpui::test]
4290 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
4291 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
4292 let settings = EditorSettings::test(&cx);
4293 let (_, view) = cx.add_window(Default::default(), |cx| {
4294 build_editor(buffer.clone(), settings, cx)
4295 });
4296
4297 assert_eq!('ⓐ'.len_utf8(), 3);
4298 assert_eq!('α'.len_utf8(), 2);
4299
4300 view.update(cx, |view, cx| {
4301 view.fold_ranges(
4302 vec![
4303 Point::new(0, 6)..Point::new(0, 12),
4304 Point::new(1, 2)..Point::new(1, 4),
4305 Point::new(2, 4)..Point::new(2, 8),
4306 ],
4307 cx,
4308 );
4309 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
4310
4311 view.move_right(&MoveRight, cx);
4312 assert_eq!(
4313 view.selected_display_ranges(cx),
4314 &[empty_range(0, "ⓐ".len())]
4315 );
4316 view.move_right(&MoveRight, cx);
4317 assert_eq!(
4318 view.selected_display_ranges(cx),
4319 &[empty_range(0, "ⓐⓑ".len())]
4320 );
4321 view.move_right(&MoveRight, cx);
4322 assert_eq!(
4323 view.selected_display_ranges(cx),
4324 &[empty_range(0, "ⓐⓑ…".len())]
4325 );
4326
4327 view.move_down(&MoveDown, cx);
4328 assert_eq!(
4329 view.selected_display_ranges(cx),
4330 &[empty_range(1, "ab…".len())]
4331 );
4332 view.move_left(&MoveLeft, cx);
4333 assert_eq!(
4334 view.selected_display_ranges(cx),
4335 &[empty_range(1, "ab".len())]
4336 );
4337 view.move_left(&MoveLeft, cx);
4338 assert_eq!(
4339 view.selected_display_ranges(cx),
4340 &[empty_range(1, "a".len())]
4341 );
4342
4343 view.move_down(&MoveDown, cx);
4344 assert_eq!(
4345 view.selected_display_ranges(cx),
4346 &[empty_range(2, "α".len())]
4347 );
4348 view.move_right(&MoveRight, cx);
4349 assert_eq!(
4350 view.selected_display_ranges(cx),
4351 &[empty_range(2, "αβ".len())]
4352 );
4353 view.move_right(&MoveRight, cx);
4354 assert_eq!(
4355 view.selected_display_ranges(cx),
4356 &[empty_range(2, "αβ…".len())]
4357 );
4358 view.move_right(&MoveRight, cx);
4359 assert_eq!(
4360 view.selected_display_ranges(cx),
4361 &[empty_range(2, "αβ…ε".len())]
4362 );
4363
4364 view.move_up(&MoveUp, cx);
4365 assert_eq!(
4366 view.selected_display_ranges(cx),
4367 &[empty_range(1, "ab…e".len())]
4368 );
4369 view.move_up(&MoveUp, cx);
4370 assert_eq!(
4371 view.selected_display_ranges(cx),
4372 &[empty_range(0, "ⓐⓑ…ⓔ".len())]
4373 );
4374 view.move_left(&MoveLeft, cx);
4375 assert_eq!(
4376 view.selected_display_ranges(cx),
4377 &[empty_range(0, "ⓐⓑ…".len())]
4378 );
4379 view.move_left(&MoveLeft, cx);
4380 assert_eq!(
4381 view.selected_display_ranges(cx),
4382 &[empty_range(0, "ⓐⓑ".len())]
4383 );
4384 view.move_left(&MoveLeft, cx);
4385 assert_eq!(
4386 view.selected_display_ranges(cx),
4387 &[empty_range(0, "ⓐ".len())]
4388 );
4389 });
4390 }
4391
4392 #[gpui::test]
4393 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
4394 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
4395 let settings = EditorSettings::test(&cx);
4396 let (_, view) = cx.add_window(Default::default(), |cx| {
4397 build_editor(buffer.clone(), settings, cx)
4398 });
4399 view.update(cx, |view, cx| {
4400 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx)
4401 .unwrap();
4402
4403 view.move_down(&MoveDown, cx);
4404 assert_eq!(
4405 view.selected_display_ranges(cx),
4406 &[empty_range(1, "abcd".len())]
4407 );
4408
4409 view.move_down(&MoveDown, cx);
4410 assert_eq!(
4411 view.selected_display_ranges(cx),
4412 &[empty_range(2, "αβγ".len())]
4413 );
4414
4415 view.move_down(&MoveDown, cx);
4416 assert_eq!(
4417 view.selected_display_ranges(cx),
4418 &[empty_range(3, "abcd".len())]
4419 );
4420
4421 view.move_down(&MoveDown, cx);
4422 assert_eq!(
4423 view.selected_display_ranges(cx),
4424 &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
4425 );
4426
4427 view.move_up(&MoveUp, cx);
4428 assert_eq!(
4429 view.selected_display_ranges(cx),
4430 &[empty_range(3, "abcd".len())]
4431 );
4432
4433 view.move_up(&MoveUp, cx);
4434 assert_eq!(
4435 view.selected_display_ranges(cx),
4436 &[empty_range(2, "αβγ".len())]
4437 );
4438 });
4439 }
4440
4441 #[gpui::test]
4442 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
4443 let buffer = MultiBuffer::build_simple("abc\n def", cx);
4444 let settings = EditorSettings::test(&cx);
4445 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4446 view.update(cx, |view, cx| {
4447 view.select_display_ranges(
4448 &[
4449 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4450 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
4451 ],
4452 cx,
4453 )
4454 .unwrap();
4455 });
4456
4457 view.update(cx, |view, cx| {
4458 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
4459 assert_eq!(
4460 view.selected_display_ranges(cx),
4461 &[
4462 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4463 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
4464 ]
4465 );
4466 });
4467
4468 view.update(cx, |view, cx| {
4469 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
4470 assert_eq!(
4471 view.selected_display_ranges(cx),
4472 &[
4473 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4474 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4475 ]
4476 );
4477 });
4478
4479 view.update(cx, |view, cx| {
4480 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
4481 assert_eq!(
4482 view.selected_display_ranges(cx),
4483 &[
4484 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4485 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
4486 ]
4487 );
4488 });
4489
4490 view.update(cx, |view, cx| {
4491 view.move_to_end_of_line(&MoveToEndOfLine, cx);
4492 assert_eq!(
4493 view.selected_display_ranges(cx),
4494 &[
4495 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4496 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
4497 ]
4498 );
4499 });
4500
4501 // Moving to the end of line again is a no-op.
4502 view.update(cx, |view, cx| {
4503 view.move_to_end_of_line(&MoveToEndOfLine, cx);
4504 assert_eq!(
4505 view.selected_display_ranges(cx),
4506 &[
4507 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4508 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
4509 ]
4510 );
4511 });
4512
4513 view.update(cx, |view, cx| {
4514 view.move_left(&MoveLeft, cx);
4515 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
4516 assert_eq!(
4517 view.selected_display_ranges(cx),
4518 &[
4519 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
4520 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
4521 ]
4522 );
4523 });
4524
4525 view.update(cx, |view, cx| {
4526 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
4527 assert_eq!(
4528 view.selected_display_ranges(cx),
4529 &[
4530 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
4531 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
4532 ]
4533 );
4534 });
4535
4536 view.update(cx, |view, cx| {
4537 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
4538 assert_eq!(
4539 view.selected_display_ranges(cx),
4540 &[
4541 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
4542 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
4543 ]
4544 );
4545 });
4546
4547 view.update(cx, |view, cx| {
4548 view.select_to_end_of_line(&SelectToEndOfLine, cx);
4549 assert_eq!(
4550 view.selected_display_ranges(cx),
4551 &[
4552 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
4553 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
4554 ]
4555 );
4556 });
4557
4558 view.update(cx, |view, cx| {
4559 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
4560 assert_eq!(view.display_text(cx), "ab\n de");
4561 assert_eq!(
4562 view.selected_display_ranges(cx),
4563 &[
4564 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4565 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
4566 ]
4567 );
4568 });
4569
4570 view.update(cx, |view, cx| {
4571 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
4572 assert_eq!(view.display_text(cx), "\n");
4573 assert_eq!(
4574 view.selected_display_ranges(cx),
4575 &[
4576 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4577 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4578 ]
4579 );
4580 });
4581 }
4582
4583 #[gpui::test]
4584 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
4585 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
4586 let settings = EditorSettings::test(&cx);
4587 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4588 view.update(cx, |view, cx| {
4589 view.select_display_ranges(
4590 &[
4591 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
4592 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
4593 ],
4594 cx,
4595 )
4596 .unwrap();
4597 });
4598
4599 view.update(cx, |view, cx| {
4600 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4601 assert_eq!(
4602 view.selected_display_ranges(cx),
4603 &[
4604 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
4605 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
4606 ]
4607 );
4608 });
4609
4610 view.update(cx, |view, cx| {
4611 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4612 assert_eq!(
4613 view.selected_display_ranges(cx),
4614 &[
4615 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
4616 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2),
4617 ]
4618 );
4619 });
4620
4621 view.update(cx, |view, cx| {
4622 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4623 assert_eq!(
4624 view.selected_display_ranges(cx),
4625 &[
4626 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
4627 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
4628 ]
4629 );
4630 });
4631
4632 view.update(cx, |view, cx| {
4633 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4634 assert_eq!(
4635 view.selected_display_ranges(cx),
4636 &[
4637 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4638 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4639 ]
4640 );
4641 });
4642
4643 view.update(cx, |view, cx| {
4644 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4645 assert_eq!(
4646 view.selected_display_ranges(cx),
4647 &[
4648 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4649 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 23),
4650 ]
4651 );
4652 });
4653
4654 view.update(cx, |view, cx| {
4655 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4656 assert_eq!(
4657 view.selected_display_ranges(cx),
4658 &[
4659 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4660 DisplayPoint::new(0, 24)..DisplayPoint::new(0, 24),
4661 ]
4662 );
4663 });
4664
4665 view.update(cx, |view, cx| {
4666 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4667 assert_eq!(
4668 view.selected_display_ranges(cx),
4669 &[
4670 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
4671 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4672 ]
4673 );
4674 });
4675
4676 view.update(cx, |view, cx| {
4677 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4678 assert_eq!(
4679 view.selected_display_ranges(cx),
4680 &[
4681 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
4682 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
4683 ]
4684 );
4685 });
4686
4687 view.update(cx, |view, cx| {
4688 view.move_right(&MoveRight, cx);
4689 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
4690 assert_eq!(
4691 view.selected_display_ranges(cx),
4692 &[
4693 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
4694 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
4695 ]
4696 );
4697 });
4698
4699 view.update(cx, |view, cx| {
4700 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
4701 assert_eq!(
4702 view.selected_display_ranges(cx),
4703 &[
4704 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 7),
4705 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 2),
4706 ]
4707 );
4708 });
4709
4710 view.update(cx, |view, cx| {
4711 view.select_to_next_word_boundary(&SelectToNextWordBoundary, cx);
4712 assert_eq!(
4713 view.selected_display_ranges(cx),
4714 &[
4715 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
4716 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
4717 ]
4718 );
4719 });
4720 }
4721
4722 #[gpui::test]
4723 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
4724 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
4725 let settings = EditorSettings::test(&cx);
4726 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4727
4728 view.update(cx, |view, cx| {
4729 view.set_wrap_width(Some(140.), cx);
4730 assert_eq!(
4731 view.display_text(cx),
4732 "use one::{\n two::three::\n four::five\n};"
4733 );
4734
4735 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx)
4736 .unwrap();
4737
4738 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4739 assert_eq!(
4740 view.selected_display_ranges(cx),
4741 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
4742 );
4743
4744 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4745 assert_eq!(
4746 view.selected_display_ranges(cx),
4747 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
4748 );
4749
4750 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4751 assert_eq!(
4752 view.selected_display_ranges(cx),
4753 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
4754 );
4755
4756 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4757 assert_eq!(
4758 view.selected_display_ranges(cx),
4759 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
4760 );
4761
4762 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4763 assert_eq!(
4764 view.selected_display_ranges(cx),
4765 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
4766 );
4767
4768 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4769 assert_eq!(
4770 view.selected_display_ranges(cx),
4771 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
4772 );
4773 });
4774 }
4775
4776 #[gpui::test]
4777 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
4778 let buffer = MultiBuffer::build_simple("one two three four", cx);
4779 let settings = EditorSettings::test(&cx);
4780 let (_, view) = cx.add_window(Default::default(), |cx| {
4781 build_editor(buffer.clone(), settings, cx)
4782 });
4783
4784 view.update(cx, |view, cx| {
4785 view.select_display_ranges(
4786 &[
4787 // an empty selection - the preceding word fragment is deleted
4788 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4789 // characters selected - they are deleted
4790 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
4791 ],
4792 cx,
4793 )
4794 .unwrap();
4795 view.delete_to_previous_word_boundary(&DeleteToPreviousWordBoundary, cx);
4796 });
4797
4798 assert_eq!(buffer.read(cx).read(cx).text(), "e two te four");
4799
4800 view.update(cx, |view, cx| {
4801 view.select_display_ranges(
4802 &[
4803 // an empty selection - the following word fragment is deleted
4804 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4805 // characters selected - they are deleted
4806 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
4807 ],
4808 cx,
4809 )
4810 .unwrap();
4811 view.delete_to_next_word_boundary(&DeleteToNextWordBoundary, cx);
4812 });
4813
4814 assert_eq!(buffer.read(cx).read(cx).text(), "e t te our");
4815 }
4816
4817 #[gpui::test]
4818 fn test_newline(cx: &mut gpui::MutableAppContext) {
4819 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
4820 let settings = EditorSettings::test(&cx);
4821 let (_, view) = cx.add_window(Default::default(), |cx| {
4822 build_editor(buffer.clone(), settings, cx)
4823 });
4824
4825 view.update(cx, |view, cx| {
4826 view.select_display_ranges(
4827 &[
4828 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4829 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
4830 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
4831 ],
4832 cx,
4833 )
4834 .unwrap();
4835
4836 view.newline(&Newline, cx);
4837 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
4838 });
4839 }
4840
4841 #[gpui::test]
4842 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
4843 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
4844 let settings = EditorSettings::test(&cx);
4845 let (_, view) = cx.add_window(Default::default(), |cx| {
4846 build_editor(buffer.clone(), settings, cx)
4847 });
4848
4849 view.update(cx, |view, cx| {
4850 // two selections on the same line
4851 view.select_display_ranges(
4852 &[
4853 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
4854 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
4855 ],
4856 cx,
4857 )
4858 .unwrap();
4859
4860 // indent from mid-tabstop to full tabstop
4861 view.tab(&Tab, cx);
4862 assert_eq!(view.text(cx), " one two\nthree\n four");
4863 assert_eq!(
4864 view.selected_display_ranges(cx),
4865 &[
4866 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
4867 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
4868 ]
4869 );
4870
4871 // outdent from 1 tabstop to 0 tabstops
4872 view.outdent(&Outdent, cx);
4873 assert_eq!(view.text(cx), "one two\nthree\n four");
4874 assert_eq!(
4875 view.selected_display_ranges(cx),
4876 &[
4877 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
4878 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
4879 ]
4880 );
4881
4882 // select across line ending
4883 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx)
4884 .unwrap();
4885
4886 // indent and outdent affect only the preceding line
4887 view.tab(&Tab, cx);
4888 assert_eq!(view.text(cx), "one two\n three\n four");
4889 assert_eq!(
4890 view.selected_display_ranges(cx),
4891 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
4892 );
4893 view.outdent(&Outdent, cx);
4894 assert_eq!(view.text(cx), "one two\nthree\n four");
4895 assert_eq!(
4896 view.selected_display_ranges(cx),
4897 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
4898 );
4899 });
4900 }
4901
4902 #[gpui::test]
4903 fn test_backspace(cx: &mut gpui::MutableAppContext) {
4904 let buffer =
4905 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
4906 let settings = EditorSettings::test(&cx);
4907 let (_, view) = cx.add_window(Default::default(), |cx| {
4908 build_editor(buffer.clone(), settings, cx)
4909 });
4910
4911 view.update(cx, |view, cx| {
4912 view.select_display_ranges(
4913 &[
4914 // an empty selection - the preceding character is deleted
4915 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4916 // one character selected - it is deleted
4917 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
4918 // a line suffix selected - it is deleted
4919 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
4920 ],
4921 cx,
4922 )
4923 .unwrap();
4924 view.backspace(&Backspace, cx);
4925 });
4926
4927 assert_eq!(
4928 buffer.read(cx).read(cx).text(),
4929 "oe two three\nfou five six\nseven ten\n"
4930 );
4931 }
4932
4933 #[gpui::test]
4934 fn test_delete(cx: &mut gpui::MutableAppContext) {
4935 let buffer =
4936 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
4937 let settings = EditorSettings::test(&cx);
4938 let (_, view) = cx.add_window(Default::default(), |cx| {
4939 build_editor(buffer.clone(), settings, cx)
4940 });
4941
4942 view.update(cx, |view, cx| {
4943 view.select_display_ranges(
4944 &[
4945 // an empty selection - the following character is deleted
4946 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4947 // one character selected - it is deleted
4948 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
4949 // a line suffix selected - it is deleted
4950 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
4951 ],
4952 cx,
4953 )
4954 .unwrap();
4955 view.delete(&Delete, cx);
4956 });
4957
4958 assert_eq!(
4959 buffer.read(cx).read(cx).text(),
4960 "on two three\nfou five six\nseven ten\n"
4961 );
4962 }
4963
4964 #[gpui::test]
4965 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
4966 let settings = EditorSettings::test(&cx);
4967 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
4968 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4969 view.update(cx, |view, cx| {
4970 view.select_display_ranges(
4971 &[
4972 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4973 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
4974 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
4975 ],
4976 cx,
4977 )
4978 .unwrap();
4979 view.delete_line(&DeleteLine, cx);
4980 assert_eq!(view.display_text(cx), "ghi");
4981 assert_eq!(
4982 view.selected_display_ranges(cx),
4983 vec![
4984 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4985 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
4986 ]
4987 );
4988 });
4989
4990 let settings = EditorSettings::test(&cx);
4991 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
4992 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4993 view.update(cx, |view, cx| {
4994 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx)
4995 .unwrap();
4996 view.delete_line(&DeleteLine, cx);
4997 assert_eq!(view.display_text(cx), "ghi\n");
4998 assert_eq!(
4999 view.selected_display_ranges(cx),
5000 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
5001 );
5002 });
5003 }
5004
5005 #[gpui::test]
5006 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
5007 let settings = EditorSettings::test(&cx);
5008 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
5009 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5010 view.update(cx, |view, cx| {
5011 view.select_display_ranges(
5012 &[
5013 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
5014 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5015 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5016 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5017 ],
5018 cx,
5019 )
5020 .unwrap();
5021 view.duplicate_line(&DuplicateLine, cx);
5022 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
5023 assert_eq!(
5024 view.selected_display_ranges(cx),
5025 vec![
5026 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
5027 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5028 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5029 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
5030 ]
5031 );
5032 });
5033
5034 let settings = EditorSettings::test(&cx);
5035 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
5036 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5037 view.update(cx, |view, cx| {
5038 view.select_display_ranges(
5039 &[
5040 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
5041 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
5042 ],
5043 cx,
5044 )
5045 .unwrap();
5046 view.duplicate_line(&DuplicateLine, cx);
5047 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
5048 assert_eq!(
5049 view.selected_display_ranges(cx),
5050 vec![
5051 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
5052 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
5053 ]
5054 );
5055 });
5056 }
5057
5058 #[gpui::test]
5059 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
5060 let settings = EditorSettings::test(&cx);
5061 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
5062 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5063 view.update(cx, |view, cx| {
5064 view.fold_ranges(
5065 vec![
5066 Point::new(0, 2)..Point::new(1, 2),
5067 Point::new(2, 3)..Point::new(4, 1),
5068 Point::new(7, 0)..Point::new(8, 4),
5069 ],
5070 cx,
5071 );
5072 view.select_display_ranges(
5073 &[
5074 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5075 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
5076 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
5077 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
5078 ],
5079 cx,
5080 )
5081 .unwrap();
5082 assert_eq!(
5083 view.display_text(cx),
5084 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
5085 );
5086
5087 view.move_line_up(&MoveLineUp, cx);
5088 assert_eq!(
5089 view.display_text(cx),
5090 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
5091 );
5092 assert_eq!(
5093 view.selected_display_ranges(cx),
5094 vec![
5095 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5096 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5097 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
5098 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
5099 ]
5100 );
5101 });
5102
5103 view.update(cx, |view, cx| {
5104 view.move_line_down(&MoveLineDown, cx);
5105 assert_eq!(
5106 view.display_text(cx),
5107 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
5108 );
5109 assert_eq!(
5110 view.selected_display_ranges(cx),
5111 vec![
5112 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5113 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
5114 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
5115 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
5116 ]
5117 );
5118 });
5119
5120 view.update(cx, |view, cx| {
5121 view.move_line_down(&MoveLineDown, cx);
5122 assert_eq!(
5123 view.display_text(cx),
5124 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
5125 );
5126 assert_eq!(
5127 view.selected_display_ranges(cx),
5128 vec![
5129 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5130 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
5131 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
5132 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
5133 ]
5134 );
5135 });
5136
5137 view.update(cx, |view, cx| {
5138 view.move_line_up(&MoveLineUp, cx);
5139 assert_eq!(
5140 view.display_text(cx),
5141 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
5142 );
5143 assert_eq!(
5144 view.selected_display_ranges(cx),
5145 vec![
5146 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5147 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5148 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
5149 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
5150 ]
5151 );
5152 });
5153 }
5154
5155 #[gpui::test]
5156 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
5157 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
5158 let settings = EditorSettings::test(&cx);
5159 let view = cx
5160 .add_window(Default::default(), |cx| {
5161 build_editor(buffer.clone(), settings, cx)
5162 })
5163 .1;
5164
5165 // Cut with three selections. Clipboard text is divided into three slices.
5166 view.update(cx, |view, cx| {
5167 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
5168 view.cut(&Cut, cx);
5169 assert_eq!(view.display_text(cx), "two four six ");
5170 });
5171
5172 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
5173 view.update(cx, |view, cx| {
5174 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
5175 view.paste(&Paste, cx);
5176 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
5177 assert_eq!(
5178 view.selected_display_ranges(cx),
5179 &[
5180 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
5181 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
5182 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
5183 ]
5184 );
5185 });
5186
5187 // Paste again but with only two cursors. Since the number of cursors doesn't
5188 // match the number of slices in the clipboard, the entire clipboard text
5189 // is pasted at each cursor.
5190 view.update(cx, |view, cx| {
5191 view.select_ranges(vec![0..0, 31..31], None, cx);
5192 view.handle_input(&Input("( ".into()), cx);
5193 view.paste(&Paste, cx);
5194 view.handle_input(&Input(") ".into()), cx);
5195 assert_eq!(
5196 view.display_text(cx),
5197 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
5198 );
5199 });
5200
5201 view.update(cx, |view, cx| {
5202 view.select_ranges(vec![0..0], None, cx);
5203 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
5204 assert_eq!(
5205 view.display_text(cx),
5206 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
5207 );
5208 });
5209
5210 // Cut with three selections, one of which is full-line.
5211 view.update(cx, |view, cx| {
5212 view.select_display_ranges(
5213 &[
5214 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
5215 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5216 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
5217 ],
5218 cx,
5219 )
5220 .unwrap();
5221 view.cut(&Cut, cx);
5222 assert_eq!(
5223 view.display_text(cx),
5224 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
5225 );
5226 });
5227
5228 // Paste with three selections, noticing how the copied selection that was full-line
5229 // gets inserted before the second cursor.
5230 view.update(cx, |view, cx| {
5231 view.select_display_ranges(
5232 &[
5233 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5234 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5235 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
5236 ],
5237 cx,
5238 )
5239 .unwrap();
5240 view.paste(&Paste, cx);
5241 assert_eq!(
5242 view.display_text(cx),
5243 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
5244 );
5245 assert_eq!(
5246 view.selected_display_ranges(cx),
5247 &[
5248 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5249 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5250 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
5251 ]
5252 );
5253 });
5254
5255 // Copy with a single cursor only, which writes the whole line into the clipboard.
5256 view.update(cx, |view, cx| {
5257 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx)
5258 .unwrap();
5259 view.copy(&Copy, cx);
5260 });
5261
5262 // Paste with three selections, noticing how the copied full-line selection is inserted
5263 // before the empty selections but replaces the selection that is non-empty.
5264 view.update(cx, |view, cx| {
5265 view.select_display_ranges(
5266 &[
5267 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5268 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
5269 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5270 ],
5271 cx,
5272 )
5273 .unwrap();
5274 view.paste(&Paste, cx);
5275 assert_eq!(
5276 view.display_text(cx),
5277 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
5278 );
5279 assert_eq!(
5280 view.selected_display_ranges(cx),
5281 &[
5282 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5283 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5284 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
5285 ]
5286 );
5287 });
5288 }
5289
5290 #[gpui::test]
5291 fn test_select_all(cx: &mut gpui::MutableAppContext) {
5292 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
5293 let settings = EditorSettings::test(&cx);
5294 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5295 view.update(cx, |view, cx| {
5296 view.select_all(&SelectAll, cx);
5297 assert_eq!(
5298 view.selected_display_ranges(cx),
5299 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
5300 );
5301 });
5302 }
5303
5304 #[gpui::test]
5305 fn test_select_line(cx: &mut gpui::MutableAppContext) {
5306 let settings = EditorSettings::test(&cx);
5307 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
5308 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5309 view.update(cx, |view, cx| {
5310 view.select_display_ranges(
5311 &[
5312 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
5313 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5314 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5315 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
5316 ],
5317 cx,
5318 )
5319 .unwrap();
5320 view.select_line(&SelectLine, cx);
5321 assert_eq!(
5322 view.selected_display_ranges(cx),
5323 vec![
5324 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
5325 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
5326 ]
5327 );
5328 });
5329
5330 view.update(cx, |view, cx| {
5331 view.select_line(&SelectLine, cx);
5332 assert_eq!(
5333 view.selected_display_ranges(cx),
5334 vec![
5335 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
5336 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
5337 ]
5338 );
5339 });
5340
5341 view.update(cx, |view, cx| {
5342 view.select_line(&SelectLine, cx);
5343 assert_eq!(
5344 view.selected_display_ranges(cx),
5345 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
5346 );
5347 });
5348 }
5349
5350 #[gpui::test]
5351 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
5352 let settings = EditorSettings::test(&cx);
5353 let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
5354 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5355 view.update(cx, |view, cx| {
5356 view.fold_ranges(
5357 vec![
5358 Point::new(0, 2)..Point::new(1, 2),
5359 Point::new(2, 3)..Point::new(4, 1),
5360 Point::new(7, 0)..Point::new(8, 4),
5361 ],
5362 cx,
5363 );
5364 view.select_display_ranges(
5365 &[
5366 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
5367 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5368 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5369 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
5370 ],
5371 cx,
5372 )
5373 .unwrap();
5374 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
5375 });
5376
5377 view.update(cx, |view, cx| {
5378 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
5379 assert_eq!(
5380 view.display_text(cx),
5381 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
5382 );
5383 assert_eq!(
5384 view.selected_display_ranges(cx),
5385 [
5386 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5387 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5388 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
5389 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
5390 ]
5391 );
5392 });
5393
5394 view.update(cx, |view, cx| {
5395 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx)
5396 .unwrap();
5397 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
5398 assert_eq!(
5399 view.display_text(cx),
5400 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
5401 );
5402 assert_eq!(
5403 view.selected_display_ranges(cx),
5404 [
5405 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
5406 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
5407 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
5408 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
5409 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
5410 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
5411 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
5412 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
5413 ]
5414 );
5415 });
5416 }
5417
5418 #[gpui::test]
5419 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
5420 let settings = EditorSettings::test(&cx);
5421 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
5422 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5423
5424 view.update(cx, |view, cx| {
5425 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx)
5426 .unwrap();
5427 });
5428 view.update(cx, |view, cx| {
5429 view.add_selection_above(&AddSelectionAbove, cx);
5430 assert_eq!(
5431 view.selected_display_ranges(cx),
5432 vec![
5433 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5434 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
5435 ]
5436 );
5437 });
5438
5439 view.update(cx, |view, cx| {
5440 view.add_selection_above(&AddSelectionAbove, cx);
5441 assert_eq!(
5442 view.selected_display_ranges(cx),
5443 vec![
5444 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5445 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
5446 ]
5447 );
5448 });
5449
5450 view.update(cx, |view, cx| {
5451 view.add_selection_below(&AddSelectionBelow, cx);
5452 assert_eq!(
5453 view.selected_display_ranges(cx),
5454 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
5455 );
5456 });
5457
5458 view.update(cx, |view, cx| {
5459 view.add_selection_below(&AddSelectionBelow, cx);
5460 assert_eq!(
5461 view.selected_display_ranges(cx),
5462 vec![
5463 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
5464 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
5465 ]
5466 );
5467 });
5468
5469 view.update(cx, |view, cx| {
5470 view.add_selection_below(&AddSelectionBelow, cx);
5471 assert_eq!(
5472 view.selected_display_ranges(cx),
5473 vec![
5474 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
5475 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
5476 ]
5477 );
5478 });
5479
5480 view.update(cx, |view, cx| {
5481 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx)
5482 .unwrap();
5483 });
5484 view.update(cx, |view, cx| {
5485 view.add_selection_below(&AddSelectionBelow, cx);
5486 assert_eq!(
5487 view.selected_display_ranges(cx),
5488 vec![
5489 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
5490 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
5491 ]
5492 );
5493 });
5494
5495 view.update(cx, |view, cx| {
5496 view.add_selection_below(&AddSelectionBelow, cx);
5497 assert_eq!(
5498 view.selected_display_ranges(cx),
5499 vec![
5500 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
5501 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
5502 ]
5503 );
5504 });
5505
5506 view.update(cx, |view, cx| {
5507 view.add_selection_above(&AddSelectionAbove, cx);
5508 assert_eq!(
5509 view.selected_display_ranges(cx),
5510 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
5511 );
5512 });
5513
5514 view.update(cx, |view, cx| {
5515 view.add_selection_above(&AddSelectionAbove, cx);
5516 assert_eq!(
5517 view.selected_display_ranges(cx),
5518 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
5519 );
5520 });
5521
5522 view.update(cx, |view, cx| {
5523 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx)
5524 .unwrap();
5525 view.add_selection_below(&AddSelectionBelow, cx);
5526 assert_eq!(
5527 view.selected_display_ranges(cx),
5528 vec![
5529 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5530 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
5531 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
5532 ]
5533 );
5534 });
5535
5536 view.update(cx, |view, cx| {
5537 view.add_selection_below(&AddSelectionBelow, cx);
5538 assert_eq!(
5539 view.selected_display_ranges(cx),
5540 vec![
5541 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5542 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
5543 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
5544 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
5545 ]
5546 );
5547 });
5548
5549 view.update(cx, |view, cx| {
5550 view.add_selection_above(&AddSelectionAbove, cx);
5551 assert_eq!(
5552 view.selected_display_ranges(cx),
5553 vec![
5554 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5555 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
5556 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
5557 ]
5558 );
5559 });
5560
5561 view.update(cx, |view, cx| {
5562 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx)
5563 .unwrap();
5564 });
5565 view.update(cx, |view, cx| {
5566 view.add_selection_above(&AddSelectionAbove, cx);
5567 assert_eq!(
5568 view.selected_display_ranges(cx),
5569 vec![
5570 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
5571 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
5572 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
5573 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
5574 ]
5575 );
5576 });
5577
5578 view.update(cx, |view, cx| {
5579 view.add_selection_below(&AddSelectionBelow, cx);
5580 assert_eq!(
5581 view.selected_display_ranges(cx),
5582 vec![
5583 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
5584 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
5585 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
5586 ]
5587 );
5588 });
5589 }
5590
5591 #[gpui::test]
5592 async fn test_select_larger_smaller_syntax_node(mut cx: gpui::TestAppContext) {
5593 let settings = cx.read(EditorSettings::test);
5594 let language = Some(Arc::new(Language::new(
5595 LanguageConfig::default(),
5596 Some(tree_sitter_rust::language()),
5597 )));
5598
5599 let text = r#"
5600 use mod1::mod2::{mod3, mod4};
5601
5602 fn fn_1(param1: bool, param2: &str) {
5603 let var1 = "text";
5604 }
5605 "#
5606 .unindent();
5607
5608 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
5609 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5610 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
5611 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
5612 .await;
5613
5614 view.update(&mut cx, |view, cx| {
5615 view.select_display_ranges(
5616 &[
5617 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
5618 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
5619 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
5620 ],
5621 cx,
5622 )
5623 .unwrap();
5624 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5625 });
5626 assert_eq!(
5627 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5628 &[
5629 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
5630 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
5631 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
5632 ]
5633 );
5634
5635 view.update(&mut cx, |view, cx| {
5636 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5637 });
5638 assert_eq!(
5639 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5640 &[
5641 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
5642 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
5643 ]
5644 );
5645
5646 view.update(&mut cx, |view, cx| {
5647 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5648 });
5649 assert_eq!(
5650 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5651 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
5652 );
5653
5654 // Trying to expand the selected syntax node one more time has no effect.
5655 view.update(&mut cx, |view, cx| {
5656 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5657 });
5658 assert_eq!(
5659 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5660 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
5661 );
5662
5663 view.update(&mut cx, |view, cx| {
5664 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
5665 });
5666 assert_eq!(
5667 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5668 &[
5669 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
5670 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
5671 ]
5672 );
5673
5674 view.update(&mut cx, |view, cx| {
5675 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
5676 });
5677 assert_eq!(
5678 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5679 &[
5680 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
5681 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
5682 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
5683 ]
5684 );
5685
5686 view.update(&mut cx, |view, cx| {
5687 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
5688 });
5689 assert_eq!(
5690 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5691 &[
5692 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
5693 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
5694 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
5695 ]
5696 );
5697
5698 // Trying to shrink the selected syntax node one more time has no effect.
5699 view.update(&mut cx, |view, cx| {
5700 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
5701 });
5702 assert_eq!(
5703 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5704 &[
5705 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
5706 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
5707 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
5708 ]
5709 );
5710
5711 // Ensure that we keep expanding the selection if the larger selection starts or ends within
5712 // a fold.
5713 view.update(&mut cx, |view, cx| {
5714 view.fold_ranges(
5715 vec![
5716 Point::new(0, 21)..Point::new(0, 24),
5717 Point::new(3, 20)..Point::new(3, 22),
5718 ],
5719 cx,
5720 );
5721 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5722 });
5723 assert_eq!(
5724 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5725 &[
5726 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
5727 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
5728 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
5729 ]
5730 );
5731 }
5732
5733 #[gpui::test]
5734 async fn test_autoclose_pairs(mut cx: gpui::TestAppContext) {
5735 let settings = cx.read(EditorSettings::test);
5736 let language = Some(Arc::new(Language::new(
5737 LanguageConfig {
5738 brackets: vec![
5739 BracketPair {
5740 start: "{".to_string(),
5741 end: "}".to_string(),
5742 close: true,
5743 newline: true,
5744 },
5745 BracketPair {
5746 start: "/*".to_string(),
5747 end: " */".to_string(),
5748 close: true,
5749 newline: true,
5750 },
5751 ],
5752 ..Default::default()
5753 },
5754 Some(tree_sitter_rust::language()),
5755 )));
5756
5757 let text = r#"
5758 a
5759
5760 /
5761
5762 "#
5763 .unindent();
5764
5765 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
5766 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5767 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
5768 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
5769 .await;
5770
5771 view.update(&mut cx, |view, cx| {
5772 view.select_display_ranges(
5773 &[
5774 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
5775 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5776 ],
5777 cx,
5778 )
5779 .unwrap();
5780 view.handle_input(&Input("{".to_string()), cx);
5781 view.handle_input(&Input("{".to_string()), cx);
5782 view.handle_input(&Input("{".to_string()), cx);
5783 assert_eq!(
5784 view.text(cx),
5785 "
5786 {{{}}}
5787 {{{}}}
5788 /
5789
5790 "
5791 .unindent()
5792 );
5793
5794 view.move_right(&MoveRight, cx);
5795 view.handle_input(&Input("}".to_string()), cx);
5796 view.handle_input(&Input("}".to_string()), cx);
5797 view.handle_input(&Input("}".to_string()), cx);
5798 assert_eq!(
5799 view.text(cx),
5800 "
5801 {{{}}}}
5802 {{{}}}}
5803 /
5804
5805 "
5806 .unindent()
5807 );
5808
5809 view.undo(&Undo, cx);
5810 view.handle_input(&Input("/".to_string()), cx);
5811 view.handle_input(&Input("*".to_string()), cx);
5812 assert_eq!(
5813 view.text(cx),
5814 "
5815 /* */
5816 /* */
5817 /
5818
5819 "
5820 .unindent()
5821 );
5822
5823 view.undo(&Undo, cx);
5824 view.select_display_ranges(
5825 &[
5826 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5827 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5828 ],
5829 cx,
5830 )
5831 .unwrap();
5832 view.handle_input(&Input("*".to_string()), cx);
5833 assert_eq!(
5834 view.text(cx),
5835 "
5836 a
5837
5838 /*
5839 *
5840 "
5841 .unindent()
5842 );
5843 });
5844 }
5845
5846 #[gpui::test]
5847 async fn test_toggle_comment(mut cx: gpui::TestAppContext) {
5848 let settings = cx.read(EditorSettings::test);
5849 let language = Some(Arc::new(Language::new(
5850 LanguageConfig {
5851 line_comment: Some("// ".to_string()),
5852 ..Default::default()
5853 },
5854 Some(tree_sitter_rust::language()),
5855 )));
5856
5857 let text = "
5858 fn a() {
5859 //b();
5860 // c();
5861 // d();
5862 }
5863 "
5864 .unindent();
5865
5866 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
5867 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5868 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
5869
5870 view.update(&mut cx, |editor, cx| {
5871 // If multiple selections intersect a line, the line is only
5872 // toggled once.
5873 editor
5874 .select_display_ranges(
5875 &[
5876 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
5877 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
5878 ],
5879 cx,
5880 )
5881 .unwrap();
5882 editor.toggle_comments(&ToggleComments, cx);
5883 assert_eq!(
5884 editor.text(cx),
5885 "
5886 fn a() {
5887 b();
5888 c();
5889 d();
5890 }
5891 "
5892 .unindent()
5893 );
5894
5895 // The comment prefix is inserted at the same column for every line
5896 // in a selection.
5897 editor
5898 .select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx)
5899 .unwrap();
5900 editor.toggle_comments(&ToggleComments, cx);
5901 assert_eq!(
5902 editor.text(cx),
5903 "
5904 fn a() {
5905 // b();
5906 // c();
5907 // d();
5908 }
5909 "
5910 .unindent()
5911 );
5912
5913 // If a selection ends at the beginning of a line, that line is not toggled.
5914 editor
5915 .select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx)
5916 .unwrap();
5917 editor.toggle_comments(&ToggleComments, cx);
5918 assert_eq!(
5919 editor.text(cx),
5920 "
5921 fn a() {
5922 // b();
5923 c();
5924 // d();
5925 }
5926 "
5927 .unindent()
5928 );
5929 });
5930 }
5931
5932 #[gpui::test]
5933 fn test_editing_disjoint_excerpts(cx: &mut gpui::MutableAppContext) {
5934 let settings = EditorSettings::test(cx);
5935 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
5936 let multibuffer = cx.add_model(|cx| {
5937 let mut multibuffer = MultiBuffer::new(0);
5938 multibuffer.push_excerpt(
5939 ExcerptProperties {
5940 buffer: &buffer,
5941 range: Point::new(0, 0)..Point::new(0, 4),
5942 },
5943 cx,
5944 );
5945 multibuffer.push_excerpt(
5946 ExcerptProperties {
5947 buffer: &buffer,
5948 range: Point::new(1, 0)..Point::new(1, 4),
5949 },
5950 cx,
5951 );
5952 multibuffer
5953 });
5954
5955 assert_eq!(multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb");
5956
5957 let (_, view) = cx.add_window(Default::default(), |cx| {
5958 build_editor(multibuffer, settings, cx)
5959 });
5960 view.update(cx, |view, cx| {
5961 view.select_display_ranges(
5962 &[
5963 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5964 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5965 ],
5966 cx,
5967 )
5968 .unwrap();
5969
5970 view.handle_input(&Input("X".to_string()), cx);
5971 assert_eq!(view.text(cx), "Xaaaa\nXbbbb");
5972 assert_eq!(
5973 view.selected_display_ranges(cx),
5974 &[
5975 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5976 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5977 ]
5978 )
5979 });
5980 }
5981
5982 #[gpui::test]
5983 fn test_editing_overlapping_excerpts(cx: &mut gpui::MutableAppContext) {
5984 let settings = EditorSettings::test(cx);
5985 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
5986 let multibuffer = cx.add_model(|cx| {
5987 let mut multibuffer = MultiBuffer::new(0);
5988 multibuffer.push_excerpt(
5989 ExcerptProperties {
5990 buffer: &buffer,
5991 range: Point::new(0, 0)..Point::new(1, 4),
5992 },
5993 cx,
5994 );
5995 multibuffer.push_excerpt(
5996 ExcerptProperties {
5997 buffer: &buffer,
5998 range: Point::new(1, 0)..Point::new(2, 4),
5999 },
6000 cx,
6001 );
6002 multibuffer
6003 });
6004
6005 assert_eq!(
6006 multibuffer.read(cx).read(cx).text(),
6007 "aaaa\nbbbb\nbbbb\ncccc"
6008 );
6009
6010 let (_, view) = cx.add_window(Default::default(), |cx| {
6011 build_editor(multibuffer, settings, cx)
6012 });
6013 view.update(cx, |view, cx| {
6014 view.select_display_ranges(
6015 &[
6016 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6017 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
6018 ],
6019 cx,
6020 )
6021 .unwrap();
6022
6023 view.handle_input(&Input("X".to_string()), cx);
6024 assert_eq!(view.text(cx), "aaaa\nbXbbXb\nbXbbXb\ncccc");
6025 assert_eq!(
6026 view.selected_display_ranges(cx),
6027 &[
6028 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6029 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
6030 ]
6031 )
6032 });
6033 }
6034
6035 #[gpui::test]
6036 async fn test_extra_newline_insertion(mut cx: gpui::TestAppContext) {
6037 let settings = cx.read(EditorSettings::test);
6038 let language = Some(Arc::new(Language::new(
6039 LanguageConfig {
6040 brackets: vec![
6041 BracketPair {
6042 start: "{".to_string(),
6043 end: "}".to_string(),
6044 close: true,
6045 newline: true,
6046 },
6047 BracketPair {
6048 start: "/* ".to_string(),
6049 end: " */".to_string(),
6050 close: true,
6051 newline: true,
6052 },
6053 ],
6054 ..Default::default()
6055 },
6056 Some(tree_sitter_rust::language()),
6057 )));
6058
6059 let text = concat!(
6060 "{ }\n", // Suppress rustfmt
6061 " x\n", //
6062 " /* */\n", //
6063 "x\n", //
6064 "{{} }\n", //
6065 );
6066
6067 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
6068 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6069 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6070 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
6071 .await;
6072
6073 view.update(&mut cx, |view, cx| {
6074 view.select_display_ranges(
6075 &[
6076 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
6077 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
6078 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
6079 ],
6080 cx,
6081 )
6082 .unwrap();
6083 view.newline(&Newline, cx);
6084
6085 assert_eq!(
6086 view.buffer().read(cx).read(cx).text(),
6087 concat!(
6088 "{ \n", // Suppress rustfmt
6089 "\n", //
6090 "}\n", //
6091 " x\n", //
6092 " /* \n", //
6093 " \n", //
6094 " */\n", //
6095 "x\n", //
6096 "{{} \n", //
6097 "}\n", //
6098 )
6099 );
6100 });
6101 }
6102
6103 impl Editor {
6104 fn selected_ranges<D: TextDimension + Ord + Sub<D, Output = D>>(
6105 &self,
6106 cx: &mut MutableAppContext,
6107 ) -> Vec<Range<D>> {
6108 self.local_selections::<D>(cx)
6109 .iter()
6110 .map(|s| {
6111 if s.reversed {
6112 s.end.clone()..s.start.clone()
6113 } else {
6114 s.start.clone()..s.end.clone()
6115 }
6116 })
6117 .collect()
6118 }
6119
6120 fn selected_display_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
6121 let display_map = self
6122 .display_map
6123 .update(cx, |display_map, cx| display_map.snapshot(cx));
6124 self.selections
6125 .iter()
6126 .chain(
6127 self.pending_selection
6128 .as_ref()
6129 .map(|pending| &pending.selection),
6130 )
6131 .map(|s| {
6132 if s.reversed {
6133 s.end.to_display_point(&display_map)..s.start.to_display_point(&display_map)
6134 } else {
6135 s.start.to_display_point(&display_map)..s.end.to_display_point(&display_map)
6136 }
6137 })
6138 .collect()
6139 }
6140 }
6141
6142 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
6143 let point = DisplayPoint::new(row as u32, column as u32);
6144 point..point
6145 }
6146
6147 fn build_editor(
6148 buffer: ModelHandle<MultiBuffer>,
6149 settings: EditorSettings,
6150 cx: &mut ViewContext<Editor>,
6151 ) -> Editor {
6152 Editor::for_buffer(buffer, Arc::new(move |_| settings.clone()), cx)
6153 }
6154}
6155
6156trait RangeExt<T> {
6157 fn sorted(&self) -> Range<T>;
6158 fn to_inclusive(&self) -> RangeInclusive<T>;
6159}
6160
6161impl<T: Ord + Clone> RangeExt<T> for Range<T> {
6162 fn sorted(&self) -> Self {
6163 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
6164 }
6165
6166 fn to_inclusive(&self) -> RangeInclusive<T> {
6167 self.start.clone()..=self.end.clone()
6168 }
6169}