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 anyhow::Result;
12use clock::ReplicaId;
13use collections::{BTreeMap, HashMap, HashSet};
14pub use display_map::DisplayPoint;
15use display_map::*;
16pub use element::*;
17use fuzzy::{StringMatch, StringMatchCandidate};
18use gpui::{
19 action,
20 color::Color,
21 elements::*,
22 executor,
23 fonts::{self, HighlightStyle, TextStyle},
24 geometry::vector::{vec2f, Vector2F},
25 keymap::Binding,
26 platform::CursorStyle,
27 text_layout, AppContext, ClipboardItem, Element, ElementBox, Entity, ModelHandle,
28 MutableAppContext, RenderContext, Task, View, ViewContext, WeakModelHandle, WeakViewHandle,
29};
30use items::BufferItemHandle;
31use itertools::Itertools as _;
32use language::{
33 AnchorRangeExt as _, BracketPair, Buffer, Completion, Diagnostic, DiagnosticSeverity, Language,
34 Point, Selection, SelectionGoal, TransactionId,
35};
36use multi_buffer::MultiBufferChunks;
37pub use multi_buffer::{
38 char_kind, Anchor, AnchorRangeExt, CharKind, ExcerptId, ExcerptProperties, MultiBuffer,
39 MultiBufferSnapshot, ToOffset, ToPoint,
40};
41use ordered_float::OrderedFloat;
42use postage::watch;
43use serde::{Deserialize, Serialize};
44use smallvec::SmallVec;
45use smol::Timer;
46use snippet::Snippet;
47use std::{
48 any::TypeId,
49 cmp::{self, Ordering, Reverse},
50 iter::{self, FromIterator},
51 mem,
52 ops::{Deref, DerefMut, Range, RangeInclusive, Sub},
53 sync::Arc,
54 time::{Duration, Instant},
55};
56pub use sum_tree::Bias;
57use text::rope::TextDimension;
58use theme::{DiagnosticStyle, EditorStyle};
59use util::{post_inc, ResultExt, TryFutureExt};
60use workspace::{ItemNavHistory, PathOpener, Workspace};
61
62const CURSOR_BLINK_INTERVAL: Duration = Duration::from_millis(500);
63const MAX_LINE_LEN: usize = 1024;
64const MIN_NAVIGATION_HISTORY_ROW_DELTA: i64 = 10;
65
66action!(Cancel);
67action!(Backspace);
68action!(Delete);
69action!(Input, String);
70action!(Newline);
71action!(Tab);
72action!(Outdent);
73action!(DeleteLine);
74action!(DeleteToPreviousWordBoundary);
75action!(DeleteToNextWordBoundary);
76action!(DeleteToBeginningOfLine);
77action!(DeleteToEndOfLine);
78action!(CutToEndOfLine);
79action!(DuplicateLine);
80action!(MoveLineUp);
81action!(MoveLineDown);
82action!(Cut);
83action!(Copy);
84action!(Paste);
85action!(Undo);
86action!(Redo);
87action!(MoveUp);
88action!(MoveDown);
89action!(MoveLeft);
90action!(MoveRight);
91action!(MoveToPreviousWordBoundary);
92action!(MoveToNextWordBoundary);
93action!(MoveToBeginningOfLine);
94action!(MoveToEndOfLine);
95action!(MoveToBeginning);
96action!(MoveToEnd);
97action!(SelectUp);
98action!(SelectDown);
99action!(SelectLeft);
100action!(SelectRight);
101action!(SelectToPreviousWordBoundary);
102action!(SelectToNextWordBoundary);
103action!(SelectToBeginningOfLine, bool);
104action!(SelectToEndOfLine);
105action!(SelectToBeginning);
106action!(SelectToEnd);
107action!(SelectAll);
108action!(SelectLine);
109action!(SplitSelectionIntoLines);
110action!(AddSelectionAbove);
111action!(AddSelectionBelow);
112action!(SelectNext, bool);
113action!(ToggleComments);
114action!(SelectLargerSyntaxNode);
115action!(SelectSmallerSyntaxNode);
116action!(MoveToEnclosingBracket);
117action!(ShowNextDiagnostic);
118action!(GoToDefinition);
119action!(PageUp);
120action!(PageDown);
121action!(Fold);
122action!(Unfold);
123action!(FoldSelectedRanges);
124action!(Scroll, Vector2F);
125action!(Select, SelectPhase);
126action!(ShowCompletions);
127action!(ConfirmCompletion, Option<usize>);
128
129pub fn init(cx: &mut MutableAppContext, path_openers: &mut Vec<Box<dyn PathOpener>>) {
130 path_openers.push(Box::new(items::BufferOpener));
131 cx.add_bindings(vec![
132 Binding::new("escape", Cancel, Some("Editor")),
133 Binding::new("backspace", Backspace, Some("Editor")),
134 Binding::new("ctrl-h", Backspace, Some("Editor")),
135 Binding::new("delete", Delete, Some("Editor")),
136 Binding::new("ctrl-d", Delete, Some("Editor")),
137 Binding::new("enter", Newline, Some("Editor && mode == full")),
138 Binding::new(
139 "alt-enter",
140 Input("\n".into()),
141 Some("Editor && mode == auto_height"),
142 ),
143 Binding::new(
144 "enter",
145 ConfirmCompletion(None),
146 Some("Editor && completing"),
147 ),
148 Binding::new("tab", Tab, Some("Editor")),
149 Binding::new("shift-tab", Outdent, Some("Editor")),
150 Binding::new("ctrl-shift-K", DeleteLine, Some("Editor")),
151 Binding::new(
152 "alt-backspace",
153 DeleteToPreviousWordBoundary,
154 Some("Editor"),
155 ),
156 Binding::new("alt-h", DeleteToPreviousWordBoundary, Some("Editor")),
157 Binding::new("alt-delete", DeleteToNextWordBoundary, Some("Editor")),
158 Binding::new("alt-d", DeleteToNextWordBoundary, Some("Editor")),
159 Binding::new("cmd-backspace", DeleteToBeginningOfLine, Some("Editor")),
160 Binding::new("cmd-delete", DeleteToEndOfLine, Some("Editor")),
161 Binding::new("ctrl-k", CutToEndOfLine, Some("Editor")),
162 Binding::new("cmd-shift-D", DuplicateLine, Some("Editor")),
163 Binding::new("ctrl-cmd-up", MoveLineUp, Some("Editor")),
164 Binding::new("ctrl-cmd-down", MoveLineDown, Some("Editor")),
165 Binding::new("cmd-x", Cut, Some("Editor")),
166 Binding::new("cmd-c", Copy, Some("Editor")),
167 Binding::new("cmd-v", Paste, Some("Editor")),
168 Binding::new("cmd-z", Undo, Some("Editor")),
169 Binding::new("cmd-shift-Z", Redo, Some("Editor")),
170 Binding::new("up", MoveUp, Some("Editor")),
171 Binding::new("down", MoveDown, Some("Editor")),
172 Binding::new("left", MoveLeft, Some("Editor")),
173 Binding::new("right", MoveRight, Some("Editor")),
174 Binding::new("ctrl-p", MoveUp, Some("Editor")),
175 Binding::new("ctrl-n", MoveDown, Some("Editor")),
176 Binding::new("ctrl-b", MoveLeft, Some("Editor")),
177 Binding::new("ctrl-f", MoveRight, Some("Editor")),
178 Binding::new("alt-left", MoveToPreviousWordBoundary, Some("Editor")),
179 Binding::new("alt-b", MoveToPreviousWordBoundary, Some("Editor")),
180 Binding::new("alt-right", MoveToNextWordBoundary, Some("Editor")),
181 Binding::new("alt-f", MoveToNextWordBoundary, Some("Editor")),
182 Binding::new("cmd-left", MoveToBeginningOfLine, Some("Editor")),
183 Binding::new("ctrl-a", MoveToBeginningOfLine, Some("Editor")),
184 Binding::new("cmd-right", MoveToEndOfLine, Some("Editor")),
185 Binding::new("ctrl-e", MoveToEndOfLine, Some("Editor")),
186 Binding::new("cmd-up", MoveToBeginning, Some("Editor")),
187 Binding::new("cmd-down", MoveToEnd, Some("Editor")),
188 Binding::new("shift-up", SelectUp, Some("Editor")),
189 Binding::new("ctrl-shift-P", SelectUp, Some("Editor")),
190 Binding::new("shift-down", SelectDown, Some("Editor")),
191 Binding::new("ctrl-shift-N", SelectDown, Some("Editor")),
192 Binding::new("shift-left", SelectLeft, Some("Editor")),
193 Binding::new("ctrl-shift-B", SelectLeft, Some("Editor")),
194 Binding::new("shift-right", SelectRight, Some("Editor")),
195 Binding::new("ctrl-shift-F", SelectRight, Some("Editor")),
196 Binding::new(
197 "alt-shift-left",
198 SelectToPreviousWordBoundary,
199 Some("Editor"),
200 ),
201 Binding::new("alt-shift-B", SelectToPreviousWordBoundary, Some("Editor")),
202 Binding::new("alt-shift-right", SelectToNextWordBoundary, Some("Editor")),
203 Binding::new("alt-shift-F", SelectToNextWordBoundary, Some("Editor")),
204 Binding::new(
205 "cmd-shift-left",
206 SelectToBeginningOfLine(true),
207 Some("Editor"),
208 ),
209 Binding::new(
210 "ctrl-shift-A",
211 SelectToBeginningOfLine(true),
212 Some("Editor"),
213 ),
214 Binding::new("cmd-shift-right", SelectToEndOfLine, Some("Editor")),
215 Binding::new("ctrl-shift-E", SelectToEndOfLine, Some("Editor")),
216 Binding::new("cmd-shift-up", SelectToBeginning, Some("Editor")),
217 Binding::new("cmd-shift-down", SelectToEnd, Some("Editor")),
218 Binding::new("cmd-a", SelectAll, Some("Editor")),
219 Binding::new("cmd-l", SelectLine, Some("Editor")),
220 Binding::new("cmd-shift-L", SplitSelectionIntoLines, Some("Editor")),
221 Binding::new("cmd-alt-up", AddSelectionAbove, Some("Editor")),
222 Binding::new("cmd-ctrl-p", AddSelectionAbove, Some("Editor")),
223 Binding::new("cmd-alt-down", AddSelectionBelow, Some("Editor")),
224 Binding::new("cmd-ctrl-n", AddSelectionBelow, Some("Editor")),
225 Binding::new("cmd-d", SelectNext(false), Some("Editor")),
226 Binding::new("cmd-k cmd-d", SelectNext(true), Some("Editor")),
227 Binding::new("cmd-/", ToggleComments, Some("Editor")),
228 Binding::new("alt-up", SelectLargerSyntaxNode, Some("Editor")),
229 Binding::new("ctrl-w", SelectLargerSyntaxNode, Some("Editor")),
230 Binding::new("alt-down", SelectSmallerSyntaxNode, Some("Editor")),
231 Binding::new("ctrl-shift-W", SelectSmallerSyntaxNode, Some("Editor")),
232 Binding::new("f8", ShowNextDiagnostic, Some("Editor")),
233 Binding::new("f12", GoToDefinition, Some("Editor")),
234 Binding::new("ctrl-m", MoveToEnclosingBracket, Some("Editor")),
235 Binding::new("pageup", PageUp, Some("Editor")),
236 Binding::new("pagedown", PageDown, Some("Editor")),
237 Binding::new("alt-cmd-[", Fold, Some("Editor")),
238 Binding::new("alt-cmd-]", Unfold, Some("Editor")),
239 Binding::new("alt-cmd-f", FoldSelectedRanges, Some("Editor")),
240 Binding::new("ctrl-space", ShowCompletions, Some("Editor")),
241 ]);
242
243 cx.add_action(Editor::open_new);
244 cx.add_action(|this: &mut Editor, action: &Scroll, cx| this.set_scroll_position(action.0, cx));
245 cx.add_action(Editor::select);
246 cx.add_action(Editor::cancel);
247 cx.add_action(Editor::handle_input);
248 cx.add_action(Editor::newline);
249 cx.add_action(Editor::backspace);
250 cx.add_action(Editor::delete);
251 cx.add_action(Editor::tab);
252 cx.add_action(Editor::outdent);
253 cx.add_action(Editor::delete_line);
254 cx.add_action(Editor::delete_to_previous_word_boundary);
255 cx.add_action(Editor::delete_to_next_word_boundary);
256 cx.add_action(Editor::delete_to_beginning_of_line);
257 cx.add_action(Editor::delete_to_end_of_line);
258 cx.add_action(Editor::cut_to_end_of_line);
259 cx.add_action(Editor::duplicate_line);
260 cx.add_action(Editor::move_line_up);
261 cx.add_action(Editor::move_line_down);
262 cx.add_action(Editor::cut);
263 cx.add_action(Editor::copy);
264 cx.add_action(Editor::paste);
265 cx.add_action(Editor::undo);
266 cx.add_action(Editor::redo);
267 cx.add_action(Editor::move_up);
268 cx.add_action(Editor::move_down);
269 cx.add_action(Editor::move_left);
270 cx.add_action(Editor::move_right);
271 cx.add_action(Editor::move_to_previous_word_boundary);
272 cx.add_action(Editor::move_to_next_word_boundary);
273 cx.add_action(Editor::move_to_beginning_of_line);
274 cx.add_action(Editor::move_to_end_of_line);
275 cx.add_action(Editor::move_to_beginning);
276 cx.add_action(Editor::move_to_end);
277 cx.add_action(Editor::select_up);
278 cx.add_action(Editor::select_down);
279 cx.add_action(Editor::select_left);
280 cx.add_action(Editor::select_right);
281 cx.add_action(Editor::select_to_previous_word_boundary);
282 cx.add_action(Editor::select_to_next_word_boundary);
283 cx.add_action(Editor::select_to_beginning_of_line);
284 cx.add_action(Editor::select_to_end_of_line);
285 cx.add_action(Editor::select_to_beginning);
286 cx.add_action(Editor::select_to_end);
287 cx.add_action(Editor::select_all);
288 cx.add_action(Editor::select_line);
289 cx.add_action(Editor::split_selection_into_lines);
290 cx.add_action(Editor::add_selection_above);
291 cx.add_action(Editor::add_selection_below);
292 cx.add_action(Editor::select_next);
293 cx.add_action(Editor::toggle_comments);
294 cx.add_action(Editor::select_larger_syntax_node);
295 cx.add_action(Editor::select_smaller_syntax_node);
296 cx.add_action(Editor::move_to_enclosing_bracket);
297 cx.add_action(Editor::show_next_diagnostic);
298 cx.add_action(Editor::go_to_definition);
299 cx.add_action(Editor::page_up);
300 cx.add_action(Editor::page_down);
301 cx.add_action(Editor::fold);
302 cx.add_action(Editor::unfold);
303 cx.add_action(Editor::fold_selected_ranges);
304 cx.add_action(Editor::show_completions);
305 cx.add_action(
306 |editor: &mut Editor, &ConfirmCompletion(ix): &ConfirmCompletion, cx| {
307 if let Some(task) = editor.confirm_completion(ix, cx) {
308 task.detach_and_log_err(cx);
309 }
310 },
311 );
312}
313
314trait SelectionExt {
315 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize>;
316 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point>;
317 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint>;
318 fn spanned_rows(&self, include_end_if_at_line_start: bool, map: &DisplaySnapshot)
319 -> Range<u32>;
320}
321
322trait InvalidationRegion {
323 fn ranges(&self) -> &[Range<Anchor>];
324}
325
326#[derive(Clone, Debug)]
327pub enum SelectPhase {
328 Begin {
329 position: DisplayPoint,
330 add: bool,
331 click_count: usize,
332 },
333 BeginColumnar {
334 position: DisplayPoint,
335 overshoot: u32,
336 },
337 Extend {
338 position: DisplayPoint,
339 click_count: usize,
340 },
341 Update {
342 position: DisplayPoint,
343 overshoot: u32,
344 scroll_position: Vector2F,
345 },
346 End,
347}
348
349#[derive(Clone, Debug)]
350enum SelectMode {
351 Character,
352 Word(Range<Anchor>),
353 Line(Range<Anchor>),
354 All,
355}
356
357#[derive(PartialEq, Eq)]
358pub enum Autoscroll {
359 Fit,
360 Center,
361 Newest,
362}
363
364#[derive(Copy, Clone, PartialEq, Eq)]
365pub enum EditorMode {
366 SingleLine,
367 AutoHeight { max_lines: usize },
368 Full,
369}
370
371#[derive(Clone)]
372pub struct EditorSettings {
373 pub tab_size: usize,
374 pub soft_wrap: SoftWrap,
375 pub style: EditorStyle,
376}
377
378#[derive(Clone)]
379pub enum SoftWrap {
380 None,
381 EditorWidth,
382 Column(u32),
383}
384
385pub type BuildSettings = Arc<dyn 'static + Send + Sync + Fn(&AppContext) -> EditorSettings>;
386
387pub struct Editor {
388 handle: WeakViewHandle<Self>,
389 buffer: ModelHandle<MultiBuffer>,
390 display_map: ModelHandle<DisplayMap>,
391 next_selection_id: usize,
392 selections: Arc<[Selection<Anchor>]>,
393 pending_selection: Option<PendingSelection>,
394 columnar_selection_tail: Option<Anchor>,
395 add_selections_state: Option<AddSelectionsState>,
396 select_next_state: Option<SelectNextState>,
397 selection_history:
398 HashMap<TransactionId, (Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)>,
399 autoclose_stack: InvalidationStack<BracketPairState>,
400 snippet_stack: InvalidationStack<SnippetState>,
401 select_larger_syntax_node_stack: Vec<Box<[Selection<usize>]>>,
402 active_diagnostics: Option<ActiveDiagnosticGroup>,
403 scroll_position: Vector2F,
404 scroll_top_anchor: Option<Anchor>,
405 autoscroll_request: Option<Autoscroll>,
406 build_settings: BuildSettings,
407 focused: bool,
408 show_local_cursors: bool,
409 blink_epoch: usize,
410 blinking_paused: bool,
411 mode: EditorMode,
412 vertical_scroll_margin: f32,
413 placeholder_text: Option<Arc<str>>,
414 highlighted_rows: Option<Range<u32>>,
415 highlighted_ranges: BTreeMap<TypeId, (Color, Vec<Range<Anchor>>)>,
416 nav_history: Option<ItemNavHistory>,
417 completion_state: Option<CompletionState>,
418 completions_task: Option<Task<Option<()>>>,
419}
420
421pub struct EditorSnapshot {
422 pub mode: EditorMode,
423 pub display_snapshot: DisplaySnapshot,
424 pub placeholder_text: Option<Arc<str>>,
425 is_focused: bool,
426 scroll_position: Vector2F,
427 scroll_top_anchor: Option<Anchor>,
428}
429
430struct PendingSelection {
431 selection: Selection<Anchor>,
432 mode: SelectMode,
433}
434
435struct AddSelectionsState {
436 above: bool,
437 stack: Vec<usize>,
438}
439
440struct SelectNextState {
441 query: AhoCorasick,
442 wordwise: bool,
443 done: bool,
444}
445
446struct BracketPairState {
447 ranges: Vec<Range<Anchor>>,
448 pair: BracketPair,
449}
450
451struct SnippetState {
452 ranges: Vec<Vec<Range<Anchor>>>,
453 active_index: usize,
454}
455
456struct InvalidationStack<T>(Vec<T>);
457
458struct CompletionState {
459 initial_position: Anchor,
460 completions: Arc<[Completion<Anchor>]>,
461 match_candidates: Vec<StringMatchCandidate>,
462 matches: Arc<[StringMatch]>,
463 selected_item: usize,
464 list: UniformListState,
465}
466
467impl CompletionState {
468 pub async fn filter(&mut self, query: Option<&str>, executor: Arc<executor::Background>) {
469 let mut matches = if let Some(query) = query {
470 fuzzy::match_strings(
471 &self.match_candidates,
472 query,
473 false,
474 100,
475 &Default::default(),
476 executor,
477 )
478 .await
479 } else {
480 self.match_candidates
481 .iter()
482 .enumerate()
483 .map(|(candidate_id, candidate)| StringMatch {
484 candidate_id,
485 score: Default::default(),
486 positions: Default::default(),
487 string: candidate.string.clone(),
488 })
489 .collect()
490 };
491 matches.sort_unstable_by_key(|mat| {
492 (
493 Reverse(OrderedFloat(mat.score)),
494 self.completions[mat.candidate_id].sort_key(),
495 )
496 });
497
498 for mat in &mut matches {
499 let filter_start = self.completions[mat.candidate_id].label.filter_range.start;
500 for position in &mut mat.positions {
501 *position += filter_start;
502 }
503 }
504
505 self.matches = matches.into();
506 }
507}
508
509#[derive(Debug)]
510struct ActiveDiagnosticGroup {
511 primary_range: Range<Anchor>,
512 primary_message: String,
513 blocks: HashMap<BlockId, Diagnostic>,
514 is_valid: bool,
515}
516
517#[derive(Serialize, Deserialize)]
518struct ClipboardSelection {
519 len: usize,
520 is_entire_line: bool,
521}
522
523pub struct NavigationData {
524 anchor: Anchor,
525 offset: usize,
526}
527
528impl Editor {
529 pub fn single_line(build_settings: BuildSettings, cx: &mut ViewContext<Self>) -> Self {
530 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
531 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
532 let mut view = Self::for_buffer(buffer, build_settings, cx);
533 view.mode = EditorMode::SingleLine;
534 view
535 }
536
537 pub fn auto_height(
538 max_lines: usize,
539 build_settings: BuildSettings,
540 cx: &mut ViewContext<Self>,
541 ) -> Self {
542 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
543 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
544 let mut view = Self::for_buffer(buffer, build_settings, cx);
545 view.mode = EditorMode::AutoHeight { max_lines };
546 view
547 }
548
549 pub fn for_buffer(
550 buffer: ModelHandle<MultiBuffer>,
551 build_settings: BuildSettings,
552 cx: &mut ViewContext<Self>,
553 ) -> Self {
554 Self::new(buffer, build_settings, cx)
555 }
556
557 pub fn clone(&self, cx: &mut ViewContext<Self>) -> Self {
558 let mut clone = Self::new(self.buffer.clone(), self.build_settings.clone(), cx);
559 clone.scroll_position = self.scroll_position;
560 clone.scroll_top_anchor = self.scroll_top_anchor.clone();
561 clone.nav_history = self
562 .nav_history
563 .as_ref()
564 .map(|nav_history| ItemNavHistory::new(nav_history.history(), &cx.handle()));
565 clone
566 }
567
568 pub fn new(
569 buffer: ModelHandle<MultiBuffer>,
570 build_settings: BuildSettings,
571 cx: &mut ViewContext<Self>,
572 ) -> Self {
573 let settings = build_settings(cx);
574 let display_map = cx.add_model(|cx| {
575 DisplayMap::new(
576 buffer.clone(),
577 settings.tab_size,
578 settings.style.text.font_id,
579 settings.style.text.font_size,
580 None,
581 cx,
582 )
583 });
584 cx.observe(&buffer, Self::on_buffer_changed).detach();
585 cx.subscribe(&buffer, Self::on_buffer_event).detach();
586 cx.observe(&display_map, Self::on_display_map_changed)
587 .detach();
588
589 let mut this = Self {
590 handle: cx.weak_handle(),
591 buffer,
592 display_map,
593 selections: Arc::from([]),
594 pending_selection: None,
595 columnar_selection_tail: None,
596 next_selection_id: 0,
597 add_selections_state: None,
598 select_next_state: None,
599 selection_history: Default::default(),
600 autoclose_stack: Default::default(),
601 snippet_stack: Default::default(),
602 select_larger_syntax_node_stack: Vec::new(),
603 active_diagnostics: None,
604 build_settings,
605 scroll_position: Vector2F::zero(),
606 scroll_top_anchor: None,
607 autoscroll_request: None,
608 focused: false,
609 show_local_cursors: false,
610 blink_epoch: 0,
611 blinking_paused: false,
612 mode: EditorMode::Full,
613 vertical_scroll_margin: 3.0,
614 placeholder_text: None,
615 highlighted_rows: None,
616 highlighted_ranges: Default::default(),
617 nav_history: None,
618 completion_state: None,
619 completions_task: None,
620 };
621 let selection = Selection {
622 id: post_inc(&mut this.next_selection_id),
623 start: 0,
624 end: 0,
625 reversed: false,
626 goal: SelectionGoal::None,
627 };
628 this.update_selections(vec![selection], None, cx);
629 this
630 }
631
632 pub fn open_new(
633 workspace: &mut Workspace,
634 _: &workspace::OpenNew,
635 cx: &mut ViewContext<Workspace>,
636 ) {
637 let buffer = cx
638 .add_model(|cx| Buffer::new(0, "", cx).with_language(language::PLAIN_TEXT.clone(), cx));
639 workspace.open_item(BufferItemHandle(buffer), cx);
640 }
641
642 pub fn replica_id(&self, cx: &AppContext) -> ReplicaId {
643 self.buffer.read(cx).replica_id()
644 }
645
646 pub fn buffer(&self) -> &ModelHandle<MultiBuffer> {
647 &self.buffer
648 }
649
650 pub fn title(&self, cx: &AppContext) -> String {
651 let filename = self
652 .buffer()
653 .read(cx)
654 .file(cx)
655 .map(|file| file.file_name(cx));
656 if let Some(name) = filename {
657 name.to_string_lossy().into()
658 } else {
659 "untitled".into()
660 }
661 }
662
663 pub fn snapshot(&mut self, cx: &mut MutableAppContext) -> EditorSnapshot {
664 EditorSnapshot {
665 mode: self.mode,
666 display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
667 scroll_position: self.scroll_position,
668 scroll_top_anchor: self.scroll_top_anchor.clone(),
669 placeholder_text: self.placeholder_text.clone(),
670 is_focused: self
671 .handle
672 .upgrade(cx)
673 .map_or(false, |handle| handle.is_focused(cx)),
674 }
675 }
676
677 pub fn language<'a>(&self, cx: &'a AppContext) -> Option<&'a Arc<Language>> {
678 self.buffer.read(cx).language(cx)
679 }
680
681 pub fn set_placeholder_text(
682 &mut self,
683 placeholder_text: impl Into<Arc<str>>,
684 cx: &mut ViewContext<Self>,
685 ) {
686 self.placeholder_text = Some(placeholder_text.into());
687 cx.notify();
688 }
689
690 pub fn set_vertical_scroll_margin(&mut self, margin_rows: usize, cx: &mut ViewContext<Self>) {
691 self.vertical_scroll_margin = margin_rows as f32;
692 cx.notify();
693 }
694
695 pub fn set_scroll_position(&mut self, scroll_position: Vector2F, cx: &mut ViewContext<Self>) {
696 let map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
697
698 if scroll_position.y() == 0. {
699 self.scroll_top_anchor = None;
700 self.scroll_position = scroll_position;
701 } else {
702 let scroll_top_buffer_offset =
703 DisplayPoint::new(scroll_position.y() as u32, 0).to_offset(&map, Bias::Right);
704 let anchor = map
705 .buffer_snapshot
706 .anchor_at(scroll_top_buffer_offset, Bias::Right);
707 self.scroll_position = vec2f(
708 scroll_position.x(),
709 scroll_position.y() - anchor.to_display_point(&map).row() as f32,
710 );
711 self.scroll_top_anchor = Some(anchor);
712 }
713
714 cx.notify();
715 }
716
717 pub fn scroll_position(&self, cx: &mut ViewContext<Self>) -> Vector2F {
718 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
719 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor)
720 }
721
722 pub fn clamp_scroll_left(&mut self, max: f32) -> bool {
723 if max < self.scroll_position.x() {
724 self.scroll_position.set_x(max);
725 true
726 } else {
727 false
728 }
729 }
730
731 pub fn autoscroll_vertically(
732 &mut self,
733 viewport_height: f32,
734 line_height: f32,
735 cx: &mut ViewContext<Self>,
736 ) -> bool {
737 let visible_lines = viewport_height / line_height;
738 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
739 let mut scroll_position =
740 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor);
741 let max_scroll_top = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
742 (display_map.max_point().row() as f32 - visible_lines + 1.).max(0.)
743 } else {
744 display_map.max_point().row().saturating_sub(1) as f32
745 };
746 if scroll_position.y() > max_scroll_top {
747 scroll_position.set_y(max_scroll_top);
748 self.set_scroll_position(scroll_position, cx);
749 }
750
751 let autoscroll = if let Some(autoscroll) = self.autoscroll_request.take() {
752 autoscroll
753 } else {
754 return false;
755 };
756
757 let first_cursor_top;
758 let last_cursor_bottom;
759 if let Some(highlighted_rows) = &self.highlighted_rows {
760 first_cursor_top = highlighted_rows.start as f32;
761 last_cursor_bottom = first_cursor_top + 1.;
762 } else if autoscroll == Autoscroll::Newest {
763 let newest_selection = self.newest_selection::<Point>(&display_map.buffer_snapshot);
764 first_cursor_top = newest_selection.head().to_display_point(&display_map).row() as f32;
765 last_cursor_bottom = first_cursor_top + 1.;
766 } else {
767 let selections = self.local_selections::<Point>(cx);
768 first_cursor_top = selections
769 .first()
770 .unwrap()
771 .head()
772 .to_display_point(&display_map)
773 .row() as f32;
774 last_cursor_bottom = selections
775 .last()
776 .unwrap()
777 .head()
778 .to_display_point(&display_map)
779 .row() as f32
780 + 1.0;
781 }
782
783 let margin = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
784 0.
785 } else {
786 ((visible_lines - (last_cursor_bottom - first_cursor_top)) / 2.0).floor()
787 };
788 if margin < 0.0 {
789 return false;
790 }
791
792 match autoscroll {
793 Autoscroll::Fit | Autoscroll::Newest => {
794 let margin = margin.min(self.vertical_scroll_margin);
795 let target_top = (first_cursor_top - margin).max(0.0);
796 let target_bottom = last_cursor_bottom + margin;
797 let start_row = scroll_position.y();
798 let end_row = start_row + visible_lines;
799
800 if target_top < start_row {
801 scroll_position.set_y(target_top);
802 self.set_scroll_position(scroll_position, cx);
803 } else if target_bottom >= end_row {
804 scroll_position.set_y(target_bottom - visible_lines);
805 self.set_scroll_position(scroll_position, cx);
806 }
807 }
808 Autoscroll::Center => {
809 scroll_position.set_y((first_cursor_top - margin).max(0.0));
810 self.set_scroll_position(scroll_position, cx);
811 }
812 }
813
814 true
815 }
816
817 pub fn autoscroll_horizontally(
818 &mut self,
819 start_row: u32,
820 viewport_width: f32,
821 scroll_width: f32,
822 max_glyph_width: f32,
823 layouts: &[text_layout::Line],
824 cx: &mut ViewContext<Self>,
825 ) -> bool {
826 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
827 let selections = self.local_selections::<Point>(cx);
828
829 let mut target_left;
830 let mut target_right;
831
832 if self.highlighted_rows.is_some() {
833 target_left = 0.0_f32;
834 target_right = 0.0_f32;
835 } else {
836 target_left = std::f32::INFINITY;
837 target_right = 0.0_f32;
838 for selection in selections {
839 let head = selection.head().to_display_point(&display_map);
840 if head.row() >= start_row && head.row() < start_row + layouts.len() as u32 {
841 let start_column = head.column().saturating_sub(3);
842 let end_column = cmp::min(display_map.line_len(head.row()), head.column() + 3);
843 target_left = target_left.min(
844 layouts[(head.row() - start_row) as usize]
845 .x_for_index(start_column as usize),
846 );
847 target_right = target_right.max(
848 layouts[(head.row() - start_row) as usize].x_for_index(end_column as usize)
849 + max_glyph_width,
850 );
851 }
852 }
853 }
854
855 target_right = target_right.min(scroll_width);
856
857 if target_right - target_left > viewport_width {
858 return false;
859 }
860
861 let scroll_left = self.scroll_position.x() * max_glyph_width;
862 let scroll_right = scroll_left + viewport_width;
863
864 if target_left < scroll_left {
865 self.scroll_position.set_x(target_left / max_glyph_width);
866 true
867 } else if target_right > scroll_right {
868 self.scroll_position
869 .set_x((target_right - viewport_width) / max_glyph_width);
870 true
871 } else {
872 false
873 }
874 }
875
876 fn select(&mut self, Select(phase): &Select, cx: &mut ViewContext<Self>) {
877 self.hide_completions(cx);
878
879 match phase {
880 SelectPhase::Begin {
881 position,
882 add,
883 click_count,
884 } => self.begin_selection(*position, *add, *click_count, cx),
885 SelectPhase::BeginColumnar {
886 position,
887 overshoot,
888 } => self.begin_columnar_selection(*position, *overshoot, cx),
889 SelectPhase::Extend {
890 position,
891 click_count,
892 } => self.extend_selection(*position, *click_count, cx),
893 SelectPhase::Update {
894 position,
895 overshoot,
896 scroll_position,
897 } => self.update_selection(*position, *overshoot, *scroll_position, cx),
898 SelectPhase::End => self.end_selection(cx),
899 }
900 }
901
902 fn extend_selection(
903 &mut self,
904 position: DisplayPoint,
905 click_count: usize,
906 cx: &mut ViewContext<Self>,
907 ) {
908 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
909 let tail = self
910 .newest_selection::<usize>(&display_map.buffer_snapshot)
911 .tail();
912 self.begin_selection(position, false, click_count, cx);
913
914 let position = position.to_offset(&display_map, Bias::Left);
915 let tail_anchor = display_map.buffer_snapshot.anchor_before(tail);
916 let pending = self.pending_selection.as_mut().unwrap();
917
918 if position >= tail {
919 pending.selection.start = tail_anchor.clone();
920 } else {
921 pending.selection.end = tail_anchor.clone();
922 pending.selection.reversed = true;
923 }
924
925 match &mut pending.mode {
926 SelectMode::Word(range) | SelectMode::Line(range) => {
927 *range = tail_anchor.clone()..tail_anchor
928 }
929 _ => {}
930 }
931 }
932
933 fn begin_selection(
934 &mut self,
935 position: DisplayPoint,
936 add: bool,
937 click_count: usize,
938 cx: &mut ViewContext<Self>,
939 ) {
940 if !self.focused {
941 cx.focus_self();
942 cx.emit(Event::Activate);
943 }
944
945 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
946 let buffer = &display_map.buffer_snapshot;
947 let newest_selection = self.newest_anchor_selection().unwrap().clone();
948
949 let start;
950 let end;
951 let mode;
952 match click_count {
953 1 => {
954 start = buffer.anchor_before(position.to_point(&display_map));
955 end = start.clone();
956 mode = SelectMode::Character;
957 }
958 2 => {
959 let range = movement::surrounding_word(&display_map, position);
960 start = buffer.anchor_before(range.start.to_point(&display_map));
961 end = buffer.anchor_before(range.end.to_point(&display_map));
962 mode = SelectMode::Word(start.clone()..end.clone());
963 }
964 3 => {
965 let position = display_map.clip_point(position, Bias::Left);
966 let line_start = movement::line_beginning(&display_map, position, false);
967 let mut next_line_start = line_start.clone();
968 *next_line_start.row_mut() += 1;
969 *next_line_start.column_mut() = 0;
970 next_line_start = display_map.clip_point(next_line_start, Bias::Right);
971
972 start = buffer.anchor_before(line_start.to_point(&display_map));
973 end = buffer.anchor_before(next_line_start.to_point(&display_map));
974 mode = SelectMode::Line(start.clone()..end.clone());
975 }
976 _ => {
977 start = buffer.anchor_before(0);
978 end = buffer.anchor_before(buffer.len());
979 mode = SelectMode::All;
980 }
981 }
982
983 self.push_to_nav_history(newest_selection.head(), Some(end.to_point(&buffer)), cx);
984
985 let selection = Selection {
986 id: post_inc(&mut self.next_selection_id),
987 start,
988 end,
989 reversed: false,
990 goal: SelectionGoal::None,
991 };
992
993 if !add {
994 self.update_selections::<usize>(Vec::new(), None, cx);
995 } else if click_count > 1 {
996 // Remove the newest selection since it was only added as part of this multi-click.
997 let mut selections = self.local_selections(cx);
998 selections.retain(|selection| selection.id != newest_selection.id);
999 self.update_selections::<usize>(selections, None, cx)
1000 }
1001
1002 self.pending_selection = Some(PendingSelection { selection, mode });
1003
1004 cx.notify();
1005 }
1006
1007 fn begin_columnar_selection(
1008 &mut self,
1009 position: DisplayPoint,
1010 overshoot: u32,
1011 cx: &mut ViewContext<Self>,
1012 ) {
1013 if !self.focused {
1014 cx.focus_self();
1015 cx.emit(Event::Activate);
1016 }
1017
1018 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1019 let tail = self
1020 .newest_selection::<Point>(&display_map.buffer_snapshot)
1021 .tail();
1022 self.columnar_selection_tail = Some(display_map.buffer_snapshot.anchor_before(tail));
1023
1024 self.select_columns(
1025 tail.to_display_point(&display_map),
1026 position,
1027 overshoot,
1028 &display_map,
1029 cx,
1030 );
1031 }
1032
1033 fn update_selection(
1034 &mut self,
1035 position: DisplayPoint,
1036 overshoot: u32,
1037 scroll_position: Vector2F,
1038 cx: &mut ViewContext<Self>,
1039 ) {
1040 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1041
1042 if let Some(tail) = self.columnar_selection_tail.as_ref() {
1043 let tail = tail.to_display_point(&display_map);
1044 self.select_columns(tail, position, overshoot, &display_map, cx);
1045 } else if let Some(PendingSelection { selection, mode }) = self.pending_selection.as_mut() {
1046 let buffer = self.buffer.read(cx).snapshot(cx);
1047 let head;
1048 let tail;
1049 match mode {
1050 SelectMode::Character => {
1051 head = position.to_point(&display_map);
1052 tail = selection.tail().to_point(&buffer);
1053 }
1054 SelectMode::Word(original_range) => {
1055 let original_display_range = original_range.start.to_display_point(&display_map)
1056 ..original_range.end.to_display_point(&display_map);
1057 let original_buffer_range = original_display_range.start.to_point(&display_map)
1058 ..original_display_range.end.to_point(&display_map);
1059 if movement::is_inside_word(&display_map, position)
1060 || original_display_range.contains(&position)
1061 {
1062 let word_range = movement::surrounding_word(&display_map, position);
1063 if word_range.start < original_display_range.start {
1064 head = word_range.start.to_point(&display_map);
1065 } else {
1066 head = word_range.end.to_point(&display_map);
1067 }
1068 } else {
1069 head = position.to_point(&display_map);
1070 }
1071
1072 if head <= original_buffer_range.start {
1073 tail = original_buffer_range.end;
1074 } else {
1075 tail = original_buffer_range.start;
1076 }
1077 }
1078 SelectMode::Line(original_range) => {
1079 let original_display_range = original_range.start.to_display_point(&display_map)
1080 ..original_range.end.to_display_point(&display_map);
1081 let original_buffer_range = original_display_range.start.to_point(&display_map)
1082 ..original_display_range.end.to_point(&display_map);
1083 let line_start = movement::line_beginning(&display_map, position, false);
1084 let mut next_line_start = line_start.clone();
1085 *next_line_start.row_mut() += 1;
1086 *next_line_start.column_mut() = 0;
1087 next_line_start = display_map.clip_point(next_line_start, Bias::Right);
1088
1089 if line_start < original_display_range.start {
1090 head = line_start.to_point(&display_map);
1091 } else {
1092 head = next_line_start.to_point(&display_map);
1093 }
1094
1095 if head <= original_buffer_range.start {
1096 tail = original_buffer_range.end;
1097 } else {
1098 tail = original_buffer_range.start;
1099 }
1100 }
1101 SelectMode::All => {
1102 return;
1103 }
1104 };
1105
1106 if head < tail {
1107 selection.start = buffer.anchor_before(head);
1108 selection.end = buffer.anchor_before(tail);
1109 selection.reversed = true;
1110 } else {
1111 selection.start = buffer.anchor_before(tail);
1112 selection.end = buffer.anchor_before(head);
1113 selection.reversed = false;
1114 }
1115 } else {
1116 log::error!("update_selection dispatched with no pending selection");
1117 return;
1118 }
1119
1120 self.set_scroll_position(scroll_position, cx);
1121 cx.notify();
1122 }
1123
1124 fn end_selection(&mut self, cx: &mut ViewContext<Self>) {
1125 self.columnar_selection_tail.take();
1126 if self.pending_selection.is_some() {
1127 let selections = self.local_selections::<usize>(cx);
1128 self.update_selections(selections, None, cx);
1129 }
1130 }
1131
1132 fn select_columns(
1133 &mut self,
1134 tail: DisplayPoint,
1135 head: DisplayPoint,
1136 overshoot: u32,
1137 display_map: &DisplaySnapshot,
1138 cx: &mut ViewContext<Self>,
1139 ) {
1140 let start_row = cmp::min(tail.row(), head.row());
1141 let end_row = cmp::max(tail.row(), head.row());
1142 let start_column = cmp::min(tail.column(), head.column() + overshoot);
1143 let end_column = cmp::max(tail.column(), head.column() + overshoot);
1144 let reversed = start_column < tail.column();
1145
1146 let selections = (start_row..=end_row)
1147 .filter_map(|row| {
1148 if start_column <= display_map.line_len(row) && !display_map.is_block_line(row) {
1149 let start = display_map
1150 .clip_point(DisplayPoint::new(row, start_column), Bias::Left)
1151 .to_point(&display_map);
1152 let end = display_map
1153 .clip_point(DisplayPoint::new(row, end_column), Bias::Right)
1154 .to_point(&display_map);
1155 Some(Selection {
1156 id: post_inc(&mut self.next_selection_id),
1157 start,
1158 end,
1159 reversed,
1160 goal: SelectionGoal::None,
1161 })
1162 } else {
1163 None
1164 }
1165 })
1166 .collect::<Vec<_>>();
1167
1168 self.update_selections(selections, None, cx);
1169 cx.notify();
1170 }
1171
1172 pub fn is_selecting(&self) -> bool {
1173 self.pending_selection.is_some() || self.columnar_selection_tail.is_some()
1174 }
1175
1176 pub fn cancel(&mut self, _: &Cancel, cx: &mut ViewContext<Self>) {
1177 if self.hide_completions(cx).is_some() {
1178 return;
1179 }
1180
1181 if self.snippet_stack.pop().is_some() {
1182 return;
1183 }
1184
1185 if self.mode != EditorMode::Full {
1186 cx.propagate_action();
1187 return;
1188 }
1189
1190 if self.active_diagnostics.is_some() {
1191 self.dismiss_diagnostics(cx);
1192 } else if let Some(PendingSelection { selection, .. }) = self.pending_selection.take() {
1193 let buffer = self.buffer.read(cx).snapshot(cx);
1194 let selection = Selection {
1195 id: selection.id,
1196 start: selection.start.to_point(&buffer),
1197 end: selection.end.to_point(&buffer),
1198 reversed: selection.reversed,
1199 goal: selection.goal,
1200 };
1201 if self.local_selections::<Point>(cx).is_empty() {
1202 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
1203 }
1204 } else {
1205 let buffer = self.buffer.read(cx).snapshot(cx);
1206 let mut oldest_selection = self.oldest_selection::<usize>(&buffer);
1207 if self.selection_count() == 1 {
1208 if oldest_selection.is_empty() {
1209 cx.propagate_action();
1210 return;
1211 }
1212
1213 oldest_selection.start = oldest_selection.head().clone();
1214 oldest_selection.end = oldest_selection.head().clone();
1215 }
1216 self.update_selections(vec![oldest_selection], Some(Autoscroll::Fit), cx);
1217 }
1218 }
1219
1220 #[cfg(any(test, feature = "test-support"))]
1221 pub fn selected_ranges<D: TextDimension + Ord + Sub<D, Output = D>>(
1222 &self,
1223 cx: &mut MutableAppContext,
1224 ) -> Vec<Range<D>> {
1225 self.local_selections::<D>(cx)
1226 .iter()
1227 .map(|s| {
1228 if s.reversed {
1229 s.end.clone()..s.start.clone()
1230 } else {
1231 s.start.clone()..s.end.clone()
1232 }
1233 })
1234 .collect()
1235 }
1236
1237 #[cfg(any(test, feature = "test-support"))]
1238 pub fn selected_display_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
1239 let display_map = self
1240 .display_map
1241 .update(cx, |display_map, cx| display_map.snapshot(cx));
1242 self.selections
1243 .iter()
1244 .chain(
1245 self.pending_selection
1246 .as_ref()
1247 .map(|pending| &pending.selection),
1248 )
1249 .map(|s| {
1250 if s.reversed {
1251 s.end.to_display_point(&display_map)..s.start.to_display_point(&display_map)
1252 } else {
1253 s.start.to_display_point(&display_map)..s.end.to_display_point(&display_map)
1254 }
1255 })
1256 .collect()
1257 }
1258
1259 pub fn select_ranges<I, T>(
1260 &mut self,
1261 ranges: I,
1262 autoscroll: Option<Autoscroll>,
1263 cx: &mut ViewContext<Self>,
1264 ) where
1265 I: IntoIterator<Item = Range<T>>,
1266 T: ToOffset,
1267 {
1268 let buffer = self.buffer.read(cx).snapshot(cx);
1269 let selections = ranges
1270 .into_iter()
1271 .map(|range| {
1272 let mut start = range.start.to_offset(&buffer);
1273 let mut end = range.end.to_offset(&buffer);
1274 let reversed = if start > end {
1275 mem::swap(&mut start, &mut end);
1276 true
1277 } else {
1278 false
1279 };
1280 Selection {
1281 id: post_inc(&mut self.next_selection_id),
1282 start,
1283 end,
1284 reversed,
1285 goal: SelectionGoal::None,
1286 }
1287 })
1288 .collect::<Vec<_>>();
1289 self.update_selections(selections, autoscroll, cx);
1290 }
1291
1292 #[cfg(any(test, feature = "test-support"))]
1293 pub fn select_display_ranges<'a, T>(&mut self, ranges: T, cx: &mut ViewContext<Self>)
1294 where
1295 T: IntoIterator<Item = &'a Range<DisplayPoint>>,
1296 {
1297 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1298 let selections = ranges
1299 .into_iter()
1300 .map(|range| {
1301 let mut start = range.start;
1302 let mut end = range.end;
1303 let reversed = if start > end {
1304 mem::swap(&mut start, &mut end);
1305 true
1306 } else {
1307 false
1308 };
1309 Selection {
1310 id: post_inc(&mut self.next_selection_id),
1311 start: start.to_point(&display_map),
1312 end: end.to_point(&display_map),
1313 reversed,
1314 goal: SelectionGoal::None,
1315 }
1316 })
1317 .collect();
1318 self.update_selections(selections, None, cx);
1319 }
1320
1321 pub fn handle_input(&mut self, action: &Input, cx: &mut ViewContext<Self>) {
1322 let text = action.0.as_ref();
1323 if !self.skip_autoclose_end(text, cx) {
1324 self.start_transaction(cx);
1325 self.insert(text, cx);
1326 self.autoclose_pairs(cx);
1327 self.end_transaction(cx);
1328 self.trigger_completion_on_input(text, cx);
1329 }
1330 }
1331
1332 pub fn newline(&mut self, _: &Newline, cx: &mut ViewContext<Self>) {
1333 self.start_transaction(cx);
1334 let mut old_selections = SmallVec::<[_; 32]>::new();
1335 {
1336 let selections = self.local_selections::<Point>(cx);
1337 let buffer = self.buffer.read(cx).snapshot(cx);
1338 for selection in selections.iter() {
1339 let start_point = selection.start;
1340 let indent = buffer
1341 .indent_column_for_line(start_point.row)
1342 .min(start_point.column);
1343 let start = selection.start.to_offset(&buffer);
1344 let end = selection.end.to_offset(&buffer);
1345
1346 let mut insert_extra_newline = false;
1347 if let Some(language) = buffer.language() {
1348 let leading_whitespace_len = buffer
1349 .reversed_chars_at(start)
1350 .take_while(|c| c.is_whitespace() && *c != '\n')
1351 .map(|c| c.len_utf8())
1352 .sum::<usize>();
1353
1354 let trailing_whitespace_len = buffer
1355 .chars_at(end)
1356 .take_while(|c| c.is_whitespace() && *c != '\n')
1357 .map(|c| c.len_utf8())
1358 .sum::<usize>();
1359
1360 insert_extra_newline = language.brackets().iter().any(|pair| {
1361 let pair_start = pair.start.trim_end();
1362 let pair_end = pair.end.trim_start();
1363
1364 pair.newline
1365 && buffer.contains_str_at(end + trailing_whitespace_len, pair_end)
1366 && buffer.contains_str_at(
1367 (start - leading_whitespace_len).saturating_sub(pair_start.len()),
1368 pair_start,
1369 )
1370 });
1371 }
1372
1373 old_selections.push((selection.id, start..end, indent, insert_extra_newline));
1374 }
1375 }
1376
1377 self.buffer.update(cx, |buffer, cx| {
1378 let mut delta = 0_isize;
1379 let mut pending_edit: Option<PendingEdit> = None;
1380 for (_, range, indent, insert_extra_newline) in &old_selections {
1381 if pending_edit.as_ref().map_or(false, |pending| {
1382 pending.indent != *indent
1383 || pending.insert_extra_newline != *insert_extra_newline
1384 }) {
1385 let pending = pending_edit.take().unwrap();
1386 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1387 new_text.push('\n');
1388 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1389 if pending.insert_extra_newline {
1390 new_text = new_text.repeat(2);
1391 }
1392 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1393 delta += pending.delta;
1394 }
1395
1396 let start = (range.start as isize + delta) as usize;
1397 let end = (range.end as isize + delta) as usize;
1398 let mut text_len = *indent as usize + 1;
1399 if *insert_extra_newline {
1400 text_len *= 2;
1401 }
1402
1403 let pending = pending_edit.get_or_insert_with(Default::default);
1404 pending.delta += text_len as isize - (end - start) as isize;
1405 pending.indent = *indent;
1406 pending.insert_extra_newline = *insert_extra_newline;
1407 pending.ranges.push(start..end);
1408 }
1409
1410 let pending = pending_edit.unwrap();
1411 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1412 new_text.push('\n');
1413 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1414 if pending.insert_extra_newline {
1415 new_text = new_text.repeat(2);
1416 }
1417 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1418
1419 let buffer = buffer.read(cx);
1420 self.selections = self
1421 .selections
1422 .iter()
1423 .cloned()
1424 .zip(old_selections)
1425 .map(|(mut new_selection, (_, _, _, insert_extra_newline))| {
1426 if insert_extra_newline {
1427 let mut cursor = new_selection.start.to_point(&buffer);
1428 cursor.row -= 1;
1429 cursor.column = buffer.line_len(cursor.row);
1430 let anchor = buffer.anchor_after(cursor);
1431 new_selection.start = anchor.clone();
1432 new_selection.end = anchor;
1433 }
1434 new_selection
1435 })
1436 .collect();
1437 });
1438
1439 self.request_autoscroll(Autoscroll::Fit, cx);
1440 self.end_transaction(cx);
1441
1442 #[derive(Default)]
1443 struct PendingEdit {
1444 indent: u32,
1445 insert_extra_newline: bool,
1446 delta: isize,
1447 ranges: SmallVec<[Range<usize>; 32]>,
1448 }
1449 }
1450
1451 pub fn insert(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1452 self.start_transaction(cx);
1453 let old_selections = self.local_selections::<usize>(cx);
1454 self.buffer.update(cx, |buffer, cx| {
1455 let edit_ranges = old_selections.iter().map(|s| s.start..s.end);
1456 buffer.edit_with_autoindent(edit_ranges, text, cx);
1457 });
1458
1459 let selections = self.local_selections::<usize>(cx);
1460 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1461 self.end_transaction(cx);
1462 }
1463
1464 fn trigger_completion_on_input(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1465 if let Some(selection) = self.newest_anchor_selection() {
1466 if self
1467 .buffer
1468 .read(cx)
1469 .is_completion_trigger(selection.head(), text, cx)
1470 {
1471 self.show_completions(&ShowCompletions, cx);
1472 } else {
1473 self.hide_completions(cx);
1474 }
1475 }
1476 }
1477
1478 fn autoclose_pairs(&mut self, cx: &mut ViewContext<Self>) {
1479 let selections = self.local_selections::<usize>(cx);
1480 let mut bracket_pair_state = None;
1481 let mut new_selections = None;
1482 self.buffer.update(cx, |buffer, cx| {
1483 let mut snapshot = buffer.snapshot(cx);
1484 let left_biased_selections = selections
1485 .iter()
1486 .map(|selection| Selection {
1487 id: selection.id,
1488 start: snapshot.anchor_before(selection.start),
1489 end: snapshot.anchor_before(selection.end),
1490 reversed: selection.reversed,
1491 goal: selection.goal,
1492 })
1493 .collect::<Vec<_>>();
1494
1495 let autoclose_pair = snapshot.language().and_then(|language| {
1496 let first_selection_start = selections.first().unwrap().start;
1497 let pair = language.brackets().iter().find(|pair| {
1498 snapshot.contains_str_at(
1499 first_selection_start.saturating_sub(pair.start.len()),
1500 &pair.start,
1501 )
1502 });
1503 pair.and_then(|pair| {
1504 let should_autoclose = selections[1..].iter().all(|selection| {
1505 snapshot.contains_str_at(
1506 selection.start.saturating_sub(pair.start.len()),
1507 &pair.start,
1508 )
1509 });
1510
1511 if should_autoclose {
1512 Some(pair.clone())
1513 } else {
1514 None
1515 }
1516 })
1517 });
1518
1519 if let Some(pair) = autoclose_pair {
1520 let selection_ranges = selections
1521 .iter()
1522 .map(|selection| {
1523 let start = selection.start.to_offset(&snapshot);
1524 start..start
1525 })
1526 .collect::<SmallVec<[_; 32]>>();
1527
1528 buffer.edit(selection_ranges, &pair.end, cx);
1529 snapshot = buffer.snapshot(cx);
1530
1531 new_selections = Some(
1532 self.resolve_selections::<usize, _>(left_biased_selections.iter(), &snapshot)
1533 .collect::<Vec<_>>(),
1534 );
1535
1536 if pair.end.len() == 1 {
1537 let mut delta = 0;
1538 bracket_pair_state = Some(BracketPairState {
1539 ranges: selections
1540 .iter()
1541 .map(move |selection| {
1542 let offset = selection.start + delta;
1543 delta += 1;
1544 snapshot.anchor_before(offset)..snapshot.anchor_after(offset)
1545 })
1546 .collect(),
1547 pair,
1548 });
1549 }
1550 }
1551 });
1552
1553 if let Some(new_selections) = new_selections {
1554 self.update_selections(new_selections, None, cx);
1555 }
1556 if let Some(bracket_pair_state) = bracket_pair_state {
1557 self.autoclose_stack.push(bracket_pair_state);
1558 }
1559 }
1560
1561 fn skip_autoclose_end(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
1562 let old_selections = self.local_selections::<usize>(cx);
1563 let autoclose_pair = if let Some(autoclose_pair) = self.autoclose_stack.last() {
1564 autoclose_pair
1565 } else {
1566 return false;
1567 };
1568 if text != autoclose_pair.pair.end {
1569 return false;
1570 }
1571
1572 debug_assert_eq!(old_selections.len(), autoclose_pair.ranges.len());
1573
1574 let buffer = self.buffer.read(cx).snapshot(cx);
1575 if old_selections
1576 .iter()
1577 .zip(autoclose_pair.ranges.iter().map(|r| r.to_offset(&buffer)))
1578 .all(|(selection, autoclose_range)| {
1579 let autoclose_range_end = autoclose_range.end.to_offset(&buffer);
1580 selection.is_empty() && selection.start == autoclose_range_end
1581 })
1582 {
1583 let new_selections = old_selections
1584 .into_iter()
1585 .map(|selection| {
1586 let cursor = selection.start + 1;
1587 Selection {
1588 id: selection.id,
1589 start: cursor,
1590 end: cursor,
1591 reversed: false,
1592 goal: SelectionGoal::None,
1593 }
1594 })
1595 .collect();
1596 self.autoclose_stack.pop();
1597 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1598 true
1599 } else {
1600 false
1601 }
1602 }
1603
1604 fn completion_query(buffer: &MultiBufferSnapshot, position: impl ToOffset) -> Option<String> {
1605 let offset = position.to_offset(buffer);
1606 let (word_range, kind) = buffer.surrounding_word(offset);
1607 if offset > word_range.start && kind == Some(CharKind::Word) {
1608 Some(
1609 buffer
1610 .text_for_range(word_range.start..offset)
1611 .collect::<String>(),
1612 )
1613 } else {
1614 None
1615 }
1616 }
1617
1618 fn show_completions(&mut self, _: &ShowCompletions, cx: &mut ViewContext<Self>) {
1619 let position = if let Some(selection) = self.newest_anchor_selection() {
1620 selection.head()
1621 } else {
1622 return;
1623 };
1624
1625 let query = Self::completion_query(&self.buffer.read(cx).read(cx), position.clone());
1626 let completions = self
1627 .buffer
1628 .update(cx, |buffer, cx| buffer.completions(position.clone(), cx));
1629
1630 self.completions_task = Some(cx.spawn_weak(|this, mut cx| {
1631 async move {
1632 let completions = completions.await?;
1633
1634 let mut completion_state = CompletionState {
1635 initial_position: position,
1636 match_candidates: completions
1637 .iter()
1638 .enumerate()
1639 .map(|(id, completion)| {
1640 StringMatchCandidate::new(
1641 id,
1642 completion.label.text[completion.label.filter_range.clone()].into(),
1643 )
1644 })
1645 .collect(),
1646 completions: completions.into(),
1647 matches: Vec::new().into(),
1648 selected_item: 0,
1649 list: Default::default(),
1650 };
1651
1652 completion_state
1653 .filter(query.as_deref(), cx.background())
1654 .await;
1655
1656 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
1657 this.update(&mut cx, |this, cx| {
1658 if completion_state.matches.is_empty() {
1659 this.hide_completions(cx);
1660 } else if this.focused {
1661 this.completion_state = Some(completion_state);
1662 }
1663
1664 cx.notify();
1665 });
1666 }
1667 Ok::<_, anyhow::Error>(())
1668 }
1669 .log_err()
1670 }));
1671 }
1672
1673 fn hide_completions(&mut self, cx: &mut ViewContext<Self>) -> Option<CompletionState> {
1674 cx.notify();
1675 self.completions_task.take();
1676 self.completion_state.take()
1677 }
1678
1679 fn confirm_completion(
1680 &mut self,
1681 completion_ix: Option<usize>,
1682 cx: &mut ViewContext<Self>,
1683 ) -> Option<Task<Result<()>>> {
1684 let completion_state = self.hide_completions(cx)?;
1685 let mat = completion_state
1686 .matches
1687 .get(completion_ix.unwrap_or(completion_state.selected_item))?;
1688 let completion = completion_state.completions.get(mat.candidate_id)?;
1689
1690 self.start_transaction(cx);
1691 if completion.is_snippet() {
1692 self.insert_snippet(completion.old_range.clone(), &completion.new_text, cx)
1693 .log_err();
1694 } else {
1695 self.buffer.update(cx, |buffer, cx| {
1696 let snapshot = buffer.read(cx);
1697 let old_range = completion.old_range.to_offset(&snapshot);
1698 if old_range.len() != completion.new_text.len()
1699 || !snapshot.contains_str_at(old_range.start, &completion.new_text)
1700 {
1701 drop(snapshot);
1702 buffer.edit_with_autoindent([old_range], &completion.new_text, cx);
1703 }
1704 });
1705 }
1706 self.end_transaction(cx);
1707
1708 Some(self.buffer.update(cx, |buffer, cx| {
1709 buffer.apply_additional_edits_for_completion(completion.clone(), cx)
1710 }))
1711 }
1712
1713 pub fn has_completions(&self) -> bool {
1714 self.completion_state
1715 .as_ref()
1716 .map_or(false, |c| !c.matches.is_empty())
1717 }
1718
1719 pub fn render_completions(&self, cx: &AppContext) -> Option<ElementBox> {
1720 enum CompletionTag {}
1721
1722 self.completion_state.as_ref().map(|state| {
1723 let build_settings = self.build_settings.clone();
1724 let settings = build_settings(cx);
1725 let completions = state.completions.clone();
1726 let matches = state.matches.clone();
1727 let selected_item = state.selected_item;
1728 UniformList::new(
1729 state.list.clone(),
1730 matches.len(),
1731 move |range, items, cx| {
1732 let settings = build_settings(cx);
1733 let start_ix = range.start;
1734 for (ix, mat) in matches[range].iter().enumerate() {
1735 let completion = &completions[mat.candidate_id];
1736 let item_ix = start_ix + ix;
1737 items.push(
1738 MouseEventHandler::new::<CompletionTag, _, _, _>(
1739 mat.candidate_id,
1740 cx,
1741 |state, _| {
1742 let item_style = if item_ix == selected_item {
1743 settings.style.autocomplete.selected_item
1744 } else if state.hovered {
1745 settings.style.autocomplete.hovered_item
1746 } else {
1747 settings.style.autocomplete.item
1748 };
1749
1750 Text::new(
1751 completion.label.text.clone(),
1752 settings.style.text.clone(),
1753 )
1754 .with_soft_wrap(false)
1755 .with_highlights(combine_syntax_and_fuzzy_match_highlights(
1756 &completion.label.text,
1757 settings.style.text.color.into(),
1758 completion.label.runs.iter().filter_map(
1759 |(range, highlight_id)| {
1760 highlight_id
1761 .style(&settings.style.syntax)
1762 .map(|style| (range.clone(), style))
1763 },
1764 ),
1765 &mat.positions,
1766 ))
1767 .contained()
1768 .with_style(item_style)
1769 .boxed()
1770 },
1771 )
1772 .with_cursor_style(CursorStyle::PointingHand)
1773 .on_mouse_down(move |cx| {
1774 cx.dispatch_action(ConfirmCompletion(Some(item_ix)));
1775 })
1776 .boxed(),
1777 );
1778 }
1779 },
1780 )
1781 .with_width_from_item(
1782 state
1783 .matches
1784 .iter()
1785 .enumerate()
1786 .max_by_key(|(_, mat)| {
1787 state.completions[mat.candidate_id]
1788 .label
1789 .text
1790 .chars()
1791 .count()
1792 })
1793 .map(|(ix, _)| ix),
1794 )
1795 .contained()
1796 .with_style(settings.style.autocomplete.container)
1797 .boxed()
1798 })
1799 }
1800
1801 pub fn insert_snippet<S>(
1802 &mut self,
1803 range: Range<S>,
1804 text: &str,
1805 cx: &mut ViewContext<Self>,
1806 ) -> Result<()>
1807 where
1808 S: Clone + ToOffset,
1809 {
1810 let snippet = Snippet::parse(text)?;
1811 let tabstops = self.buffer.update(cx, |buffer, cx| {
1812 buffer.edit_with_autoindent([range.clone()], snippet.text, cx);
1813 let snapshot = buffer.read(cx);
1814 let start = range.start.to_offset(&snapshot);
1815 snippet
1816 .tabstops
1817 .iter()
1818 .map(|ranges| {
1819 ranges
1820 .into_iter()
1821 .map(|range| {
1822 snapshot.anchor_before(start + range.start)
1823 ..snapshot.anchor_after(start + range.end)
1824 })
1825 .collect::<Vec<_>>()
1826 })
1827 .collect::<Vec<_>>()
1828 });
1829
1830 if let Some(tabstop) = tabstops.first() {
1831 self.select_ranges(tabstop.iter().cloned(), Some(Autoscroll::Fit), cx);
1832 self.snippet_stack.push(SnippetState {
1833 active_index: 0,
1834 ranges: tabstops,
1835 });
1836 }
1837
1838 Ok(())
1839 }
1840
1841 pub fn move_to_next_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) -> bool {
1842 self.move_to_snippet_tabstop(Bias::Right, cx)
1843 }
1844
1845 pub fn move_to_prev_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) -> bool {
1846 self.move_to_snippet_tabstop(Bias::Left, cx)
1847 }
1848
1849 pub fn move_to_snippet_tabstop(&mut self, bias: Bias, cx: &mut ViewContext<Self>) -> bool {
1850 let buffer = self.buffer.read(cx).snapshot(cx);
1851 let old_selections = self.local_selections::<usize>(cx);
1852
1853 if let Some(snippet) = self.snippet_stack.last_mut() {
1854 match bias {
1855 Bias::Left => {
1856 if snippet.active_index > 0 {
1857 snippet.active_index -= 1;
1858 } else {
1859 return false;
1860 }
1861 }
1862 Bias::Right => {
1863 if snippet.active_index + 1 < snippet.ranges.len() {
1864 snippet.active_index += 1;
1865 } else {
1866 return false;
1867 }
1868 }
1869 }
1870 if let Some(current_ranges) = snippet.ranges.get(snippet.active_index) {
1871 let new_selections = old_selections
1872 .into_iter()
1873 .zip(current_ranges.iter())
1874 .map(|(selection, new_range)| {
1875 let new_range = new_range.to_offset(&buffer);
1876 Selection {
1877 id: selection.id,
1878 start: new_range.start,
1879 end: new_range.end,
1880 reversed: false,
1881 goal: SelectionGoal::None,
1882 }
1883 })
1884 .collect();
1885
1886 // Remove the snippet state when moving to the last tabstop.
1887 if snippet.active_index + 1 == snippet.ranges.len() {
1888 self.snippet_stack.pop();
1889 }
1890
1891 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1892 return true;
1893 }
1894 self.snippet_stack.pop();
1895 }
1896
1897 false
1898 }
1899
1900 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
1901 self.start_transaction(cx);
1902 self.select_all(&SelectAll, cx);
1903 self.insert("", cx);
1904 self.end_transaction(cx);
1905 }
1906
1907 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
1908 self.start_transaction(cx);
1909 let mut selections = self.local_selections::<Point>(cx);
1910 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1911 for selection in &mut selections {
1912 if selection.is_empty() {
1913 let head = selection.head().to_display_point(&display_map);
1914 let cursor = movement::left(&display_map, head)
1915 .unwrap()
1916 .to_point(&display_map);
1917 selection.set_head(cursor);
1918 selection.goal = SelectionGoal::None;
1919 }
1920 }
1921 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1922 self.insert("", cx);
1923 self.end_transaction(cx);
1924 }
1925
1926 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
1927 self.start_transaction(cx);
1928 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1929 let mut selections = self.local_selections::<Point>(cx);
1930 for selection in &mut selections {
1931 if selection.is_empty() {
1932 let head = selection.head().to_display_point(&display_map);
1933 let cursor = movement::right(&display_map, head)
1934 .unwrap()
1935 .to_point(&display_map);
1936 selection.set_head(cursor);
1937 selection.goal = SelectionGoal::None;
1938 }
1939 }
1940 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1941 self.insert(&"", cx);
1942 self.end_transaction(cx);
1943 }
1944
1945 pub fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
1946 if self.move_to_next_snippet_tabstop(cx) {
1947 return;
1948 }
1949
1950 self.start_transaction(cx);
1951 let tab_size = (self.build_settings)(cx).tab_size;
1952 let mut selections = self.local_selections::<Point>(cx);
1953 let mut last_indent = None;
1954 self.buffer.update(cx, |buffer, cx| {
1955 for selection in &mut selections {
1956 if selection.is_empty() {
1957 let char_column = buffer
1958 .read(cx)
1959 .text_for_range(Point::new(selection.start.row, 0)..selection.start)
1960 .flat_map(str::chars)
1961 .count();
1962 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
1963 buffer.edit(
1964 [selection.start..selection.start],
1965 " ".repeat(chars_to_next_tab_stop),
1966 cx,
1967 );
1968 selection.start.column += chars_to_next_tab_stop as u32;
1969 selection.end = selection.start;
1970 } else {
1971 let mut start_row = selection.start.row;
1972 let mut end_row = selection.end.row + 1;
1973
1974 // If a selection ends at the beginning of a line, don't indent
1975 // that last line.
1976 if selection.end.column == 0 {
1977 end_row -= 1;
1978 }
1979
1980 // Avoid re-indenting a row that has already been indented by a
1981 // previous selection, but still update this selection's column
1982 // to reflect that indentation.
1983 if let Some((last_indent_row, last_indent_len)) = last_indent {
1984 if last_indent_row == selection.start.row {
1985 selection.start.column += last_indent_len;
1986 start_row += 1;
1987 }
1988 if last_indent_row == selection.end.row {
1989 selection.end.column += last_indent_len;
1990 }
1991 }
1992
1993 for row in start_row..end_row {
1994 let indent_column = buffer.read(cx).indent_column_for_line(row) as usize;
1995 let columns_to_next_tab_stop = tab_size - (indent_column % tab_size);
1996 let row_start = Point::new(row, 0);
1997 buffer.edit(
1998 [row_start..row_start],
1999 " ".repeat(columns_to_next_tab_stop),
2000 cx,
2001 );
2002
2003 // Update this selection's endpoints to reflect the indentation.
2004 if row == selection.start.row {
2005 selection.start.column += columns_to_next_tab_stop as u32;
2006 }
2007 if row == selection.end.row {
2008 selection.end.column += columns_to_next_tab_stop as u32;
2009 }
2010
2011 last_indent = Some((row, columns_to_next_tab_stop as u32));
2012 }
2013 }
2014 }
2015 });
2016
2017 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2018 self.end_transaction(cx);
2019 }
2020
2021 pub fn outdent(&mut self, _: &Outdent, cx: &mut ViewContext<Self>) {
2022 if self.move_to_prev_snippet_tabstop(cx) {
2023 return;
2024 }
2025
2026 self.start_transaction(cx);
2027 let tab_size = (self.build_settings)(cx).tab_size;
2028 let selections = self.local_selections::<Point>(cx);
2029 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2030 let mut deletion_ranges = Vec::new();
2031 let mut last_outdent = None;
2032 {
2033 let buffer = self.buffer.read(cx).read(cx);
2034 for selection in &selections {
2035 let mut rows = selection.spanned_rows(false, &display_map);
2036
2037 // Avoid re-outdenting a row that has already been outdented by a
2038 // previous selection.
2039 if let Some(last_row) = last_outdent {
2040 if last_row == rows.start {
2041 rows.start += 1;
2042 }
2043 }
2044
2045 for row in rows {
2046 let column = buffer.indent_column_for_line(row) as usize;
2047 if column > 0 {
2048 let mut deletion_len = (column % tab_size) as u32;
2049 if deletion_len == 0 {
2050 deletion_len = tab_size as u32;
2051 }
2052 deletion_ranges.push(Point::new(row, 0)..Point::new(row, deletion_len));
2053 last_outdent = Some(row);
2054 }
2055 }
2056 }
2057 }
2058 self.buffer.update(cx, |buffer, cx| {
2059 buffer.edit(deletion_ranges, "", cx);
2060 });
2061
2062 self.update_selections(
2063 self.local_selections::<usize>(cx),
2064 Some(Autoscroll::Fit),
2065 cx,
2066 );
2067 self.end_transaction(cx);
2068 }
2069
2070 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
2071 self.start_transaction(cx);
2072
2073 let selections = self.local_selections::<Point>(cx);
2074 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2075 let buffer = self.buffer.read(cx).snapshot(cx);
2076
2077 let mut new_cursors = Vec::new();
2078 let mut edit_ranges = Vec::new();
2079 let mut selections = selections.iter().peekable();
2080 while let Some(selection) = selections.next() {
2081 let mut rows = selection.spanned_rows(false, &display_map);
2082 let goal_display_column = selection.head().to_display_point(&display_map).column();
2083
2084 // Accumulate contiguous regions of rows that we want to delete.
2085 while let Some(next_selection) = selections.peek() {
2086 let next_rows = next_selection.spanned_rows(false, &display_map);
2087 if next_rows.start <= rows.end {
2088 rows.end = next_rows.end;
2089 selections.next().unwrap();
2090 } else {
2091 break;
2092 }
2093 }
2094
2095 let mut edit_start = Point::new(rows.start, 0).to_offset(&buffer);
2096 let edit_end;
2097 let cursor_buffer_row;
2098 if buffer.max_point().row >= rows.end {
2099 // If there's a line after the range, delete the \n from the end of the row range
2100 // and position the cursor on the next line.
2101 edit_end = Point::new(rows.end, 0).to_offset(&buffer);
2102 cursor_buffer_row = rows.end;
2103 } else {
2104 // If there isn't a line after the range, delete the \n from the line before the
2105 // start of the row range and position the cursor there.
2106 edit_start = edit_start.saturating_sub(1);
2107 edit_end = buffer.len();
2108 cursor_buffer_row = rows.start.saturating_sub(1);
2109 }
2110
2111 let mut cursor = Point::new(cursor_buffer_row, 0).to_display_point(&display_map);
2112 *cursor.column_mut() =
2113 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
2114
2115 new_cursors.push((
2116 selection.id,
2117 buffer.anchor_after(cursor.to_point(&display_map)),
2118 ));
2119 edit_ranges.push(edit_start..edit_end);
2120 }
2121
2122 let buffer = self.buffer.update(cx, |buffer, cx| {
2123 buffer.edit(edit_ranges, "", cx);
2124 buffer.snapshot(cx)
2125 });
2126 let new_selections = new_cursors
2127 .into_iter()
2128 .map(|(id, cursor)| {
2129 let cursor = cursor.to_point(&buffer);
2130 Selection {
2131 id,
2132 start: cursor,
2133 end: cursor,
2134 reversed: false,
2135 goal: SelectionGoal::None,
2136 }
2137 })
2138 .collect();
2139 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2140 self.end_transaction(cx);
2141 }
2142
2143 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
2144 self.start_transaction(cx);
2145
2146 let selections = self.local_selections::<Point>(cx);
2147 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2148 let buffer = &display_map.buffer_snapshot;
2149
2150 let mut edits = Vec::new();
2151 let mut selections_iter = selections.iter().peekable();
2152 while let Some(selection) = selections_iter.next() {
2153 // Avoid duplicating the same lines twice.
2154 let mut rows = selection.spanned_rows(false, &display_map);
2155
2156 while let Some(next_selection) = selections_iter.peek() {
2157 let next_rows = next_selection.spanned_rows(false, &display_map);
2158 if next_rows.start <= rows.end - 1 {
2159 rows.end = next_rows.end;
2160 selections_iter.next().unwrap();
2161 } else {
2162 break;
2163 }
2164 }
2165
2166 // Copy the text from the selected row region and splice it at the start of the region.
2167 let start = Point::new(rows.start, 0);
2168 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
2169 let text = buffer
2170 .text_for_range(start..end)
2171 .chain(Some("\n"))
2172 .collect::<String>();
2173 edits.push((start, text, rows.len() as u32));
2174 }
2175
2176 self.buffer.update(cx, |buffer, cx| {
2177 for (point, text, _) in edits.into_iter().rev() {
2178 buffer.edit(Some(point..point), text, cx);
2179 }
2180 });
2181
2182 self.request_autoscroll(Autoscroll::Fit, cx);
2183 self.end_transaction(cx);
2184 }
2185
2186 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
2187 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2188 let buffer = self.buffer.read(cx).snapshot(cx);
2189
2190 let mut edits = Vec::new();
2191 let mut unfold_ranges = Vec::new();
2192 let mut refold_ranges = Vec::new();
2193
2194 let selections = self.local_selections::<Point>(cx);
2195 let mut selections = selections.iter().peekable();
2196 let mut contiguous_row_selections = Vec::new();
2197 let mut new_selections = Vec::new();
2198
2199 while let Some(selection) = selections.next() {
2200 // Find all the selections that span a contiguous row range
2201 contiguous_row_selections.push(selection.clone());
2202 let start_row = selection.start.row;
2203 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
2204 display_map.next_line_boundary(selection.end).0.row + 1
2205 } else {
2206 selection.end.row
2207 };
2208
2209 while let Some(next_selection) = selections.peek() {
2210 if next_selection.start.row <= end_row {
2211 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
2212 display_map.next_line_boundary(next_selection.end).0.row + 1
2213 } else {
2214 next_selection.end.row
2215 };
2216 contiguous_row_selections.push(selections.next().unwrap().clone());
2217 } else {
2218 break;
2219 }
2220 }
2221
2222 // Move the text spanned by the row range to be before the line preceding the row range
2223 if start_row > 0 {
2224 let range_to_move = Point::new(start_row - 1, buffer.line_len(start_row - 1))
2225 ..Point::new(end_row - 1, buffer.line_len(end_row - 1));
2226 let insertion_point = display_map
2227 .prev_line_boundary(Point::new(start_row - 1, 0))
2228 .0;
2229
2230 // Don't move lines across excerpts
2231 if !buffer.range_contains_excerpt_boundary(insertion_point..range_to_move.end) {
2232 let text = buffer
2233 .text_for_range(range_to_move.clone())
2234 .flat_map(|s| s.chars())
2235 .skip(1)
2236 .chain(['\n'])
2237 .collect::<String>();
2238
2239 edits.push((
2240 buffer.anchor_after(range_to_move.start)
2241 ..buffer.anchor_before(range_to_move.end),
2242 String::new(),
2243 ));
2244 let insertion_anchor = buffer.anchor_after(insertion_point);
2245 edits.push((insertion_anchor.clone()..insertion_anchor, text));
2246
2247 let row_delta = range_to_move.start.row - insertion_point.row + 1;
2248
2249 // Move selections up
2250 new_selections.extend(contiguous_row_selections.drain(..).map(
2251 |mut selection| {
2252 selection.start.row -= row_delta;
2253 selection.end.row -= row_delta;
2254 selection
2255 },
2256 ));
2257
2258 // Move folds up
2259 unfold_ranges.push(range_to_move.clone());
2260 for fold in display_map.folds_in_range(
2261 buffer.anchor_before(range_to_move.start)
2262 ..buffer.anchor_after(range_to_move.end),
2263 ) {
2264 let mut start = fold.start.to_point(&buffer);
2265 let mut end = fold.end.to_point(&buffer);
2266 start.row -= row_delta;
2267 end.row -= row_delta;
2268 refold_ranges.push(start..end);
2269 }
2270 }
2271 }
2272
2273 // If we didn't move line(s), preserve the existing selections
2274 new_selections.extend(contiguous_row_selections.drain(..));
2275 }
2276
2277 self.start_transaction(cx);
2278 self.unfold_ranges(unfold_ranges, cx);
2279 self.buffer.update(cx, |buffer, cx| {
2280 for (range, text) in edits {
2281 buffer.edit([range], text, cx);
2282 }
2283 });
2284 self.fold_ranges(refold_ranges, cx);
2285 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2286 self.end_transaction(cx);
2287 }
2288
2289 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
2290 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2291 let buffer = self.buffer.read(cx).snapshot(cx);
2292
2293 let mut edits = Vec::new();
2294 let mut unfold_ranges = Vec::new();
2295 let mut refold_ranges = Vec::new();
2296
2297 let selections = self.local_selections::<Point>(cx);
2298 let mut selections = selections.iter().peekable();
2299 let mut contiguous_row_selections = Vec::new();
2300 let mut new_selections = Vec::new();
2301
2302 while let Some(selection) = selections.next() {
2303 // Find all the selections that span a contiguous row range
2304 contiguous_row_selections.push(selection.clone());
2305 let start_row = selection.start.row;
2306 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
2307 display_map.next_line_boundary(selection.end).0.row + 1
2308 } else {
2309 selection.end.row
2310 };
2311
2312 while let Some(next_selection) = selections.peek() {
2313 if next_selection.start.row <= end_row {
2314 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
2315 display_map.next_line_boundary(next_selection.end).0.row + 1
2316 } else {
2317 next_selection.end.row
2318 };
2319 contiguous_row_selections.push(selections.next().unwrap().clone());
2320 } else {
2321 break;
2322 }
2323 }
2324
2325 // Move the text spanned by the row range to be after the last line of the row range
2326 if end_row <= buffer.max_point().row {
2327 let range_to_move = Point::new(start_row, 0)..Point::new(end_row, 0);
2328 let insertion_point = display_map.next_line_boundary(Point::new(end_row, 0)).0;
2329
2330 // Don't move lines across excerpt boundaries
2331 if !buffer.range_contains_excerpt_boundary(range_to_move.start..insertion_point) {
2332 let mut text = String::from("\n");
2333 text.extend(buffer.text_for_range(range_to_move.clone()));
2334 text.pop(); // Drop trailing newline
2335 edits.push((
2336 buffer.anchor_after(range_to_move.start)
2337 ..buffer.anchor_before(range_to_move.end),
2338 String::new(),
2339 ));
2340 let insertion_anchor = buffer.anchor_after(insertion_point);
2341 edits.push((insertion_anchor.clone()..insertion_anchor, text));
2342
2343 let row_delta = insertion_point.row - range_to_move.end.row + 1;
2344
2345 // Move selections down
2346 new_selections.extend(contiguous_row_selections.drain(..).map(
2347 |mut selection| {
2348 selection.start.row += row_delta;
2349 selection.end.row += row_delta;
2350 selection
2351 },
2352 ));
2353
2354 // Move folds down
2355 unfold_ranges.push(range_to_move.clone());
2356 for fold in display_map.folds_in_range(
2357 buffer.anchor_before(range_to_move.start)
2358 ..buffer.anchor_after(range_to_move.end),
2359 ) {
2360 let mut start = fold.start.to_point(&buffer);
2361 let mut end = fold.end.to_point(&buffer);
2362 start.row += row_delta;
2363 end.row += row_delta;
2364 refold_ranges.push(start..end);
2365 }
2366 }
2367 }
2368
2369 // If we didn't move line(s), preserve the existing selections
2370 new_selections.extend(contiguous_row_selections.drain(..));
2371 }
2372
2373 self.start_transaction(cx);
2374 self.unfold_ranges(unfold_ranges, cx);
2375 self.buffer.update(cx, |buffer, cx| {
2376 for (range, text) in edits {
2377 buffer.edit([range], text, cx);
2378 }
2379 });
2380 self.fold_ranges(refold_ranges, cx);
2381 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2382 self.end_transaction(cx);
2383 }
2384
2385 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
2386 self.start_transaction(cx);
2387 let mut text = String::new();
2388 let mut selections = self.local_selections::<Point>(cx);
2389 let mut clipboard_selections = Vec::with_capacity(selections.len());
2390 {
2391 let buffer = self.buffer.read(cx).read(cx);
2392 let max_point = buffer.max_point();
2393 for selection in &mut selections {
2394 let is_entire_line = selection.is_empty();
2395 if is_entire_line {
2396 selection.start = Point::new(selection.start.row, 0);
2397 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
2398 }
2399 let mut len = 0;
2400 for chunk in buffer.text_for_range(selection.start..selection.end) {
2401 text.push_str(chunk);
2402 len += chunk.len();
2403 }
2404 clipboard_selections.push(ClipboardSelection {
2405 len,
2406 is_entire_line,
2407 });
2408 }
2409 }
2410 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2411 self.insert("", cx);
2412 self.end_transaction(cx);
2413
2414 cx.as_mut()
2415 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
2416 }
2417
2418 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
2419 let selections = self.local_selections::<Point>(cx);
2420 let mut text = String::new();
2421 let mut clipboard_selections = Vec::with_capacity(selections.len());
2422 {
2423 let buffer = self.buffer.read(cx).read(cx);
2424 let max_point = buffer.max_point();
2425 for selection in selections.iter() {
2426 let mut start = selection.start;
2427 let mut end = selection.end;
2428 let is_entire_line = selection.is_empty();
2429 if is_entire_line {
2430 start = Point::new(start.row, 0);
2431 end = cmp::min(max_point, Point::new(start.row + 1, 0));
2432 }
2433 let mut len = 0;
2434 for chunk in buffer.text_for_range(start..end) {
2435 text.push_str(chunk);
2436 len += chunk.len();
2437 }
2438 clipboard_selections.push(ClipboardSelection {
2439 len,
2440 is_entire_line,
2441 });
2442 }
2443 }
2444
2445 cx.as_mut()
2446 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
2447 }
2448
2449 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
2450 if let Some(item) = cx.as_mut().read_from_clipboard() {
2451 let clipboard_text = item.text();
2452 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
2453 let mut selections = self.local_selections::<usize>(cx);
2454 let all_selections_were_entire_line =
2455 clipboard_selections.iter().all(|s| s.is_entire_line);
2456 if clipboard_selections.len() != selections.len() {
2457 clipboard_selections.clear();
2458 }
2459
2460 let mut delta = 0_isize;
2461 let mut start_offset = 0;
2462 for (i, selection) in selections.iter_mut().enumerate() {
2463 let to_insert;
2464 let entire_line;
2465 if let Some(clipboard_selection) = clipboard_selections.get(i) {
2466 let end_offset = start_offset + clipboard_selection.len;
2467 to_insert = &clipboard_text[start_offset..end_offset];
2468 entire_line = clipboard_selection.is_entire_line;
2469 start_offset = end_offset
2470 } else {
2471 to_insert = clipboard_text.as_str();
2472 entire_line = all_selections_were_entire_line;
2473 }
2474
2475 selection.start = (selection.start as isize + delta) as usize;
2476 selection.end = (selection.end as isize + delta) as usize;
2477
2478 self.buffer.update(cx, |buffer, cx| {
2479 // If the corresponding selection was empty when this slice of the
2480 // clipboard text was written, then the entire line containing the
2481 // selection was copied. If this selection is also currently empty,
2482 // then paste the line before the current line of the buffer.
2483 let range = if selection.is_empty() && entire_line {
2484 let column = selection.start.to_point(&buffer.read(cx)).column as usize;
2485 let line_start = selection.start - column;
2486 line_start..line_start
2487 } else {
2488 selection.start..selection.end
2489 };
2490
2491 delta += to_insert.len() as isize - range.len() as isize;
2492 buffer.edit([range], to_insert, cx);
2493 selection.start += to_insert.len();
2494 selection.end = selection.start;
2495 });
2496 }
2497 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2498 } else {
2499 self.insert(clipboard_text, cx);
2500 }
2501 }
2502 }
2503
2504 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
2505 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
2506 if let Some((selections, _)) = self.selection_history.get(&tx_id).cloned() {
2507 self.set_selections(selections, cx);
2508 }
2509 self.request_autoscroll(Autoscroll::Fit, cx);
2510 }
2511 }
2512
2513 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
2514 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
2515 if let Some((_, Some(selections))) = self.selection_history.get(&tx_id).cloned() {
2516 self.set_selections(selections, cx);
2517 }
2518 self.request_autoscroll(Autoscroll::Fit, cx);
2519 }
2520 }
2521
2522 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
2523 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2524 let mut selections = self.local_selections::<Point>(cx);
2525 for selection in &mut selections {
2526 let start = selection.start.to_display_point(&display_map);
2527 let end = selection.end.to_display_point(&display_map);
2528
2529 if start != end {
2530 selection.end = selection.start.clone();
2531 } else {
2532 let cursor = movement::left(&display_map, start)
2533 .unwrap()
2534 .to_point(&display_map);
2535 selection.start = cursor.clone();
2536 selection.end = cursor;
2537 }
2538 selection.reversed = false;
2539 selection.goal = SelectionGoal::None;
2540 }
2541 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2542 }
2543
2544 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
2545 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2546 let mut selections = self.local_selections::<Point>(cx);
2547 for selection in &mut selections {
2548 let head = selection.head().to_display_point(&display_map);
2549 let cursor = movement::left(&display_map, head)
2550 .unwrap()
2551 .to_point(&display_map);
2552 selection.set_head(cursor);
2553 selection.goal = SelectionGoal::None;
2554 }
2555 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2556 }
2557
2558 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
2559 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2560 let mut selections = self.local_selections::<Point>(cx);
2561 for selection in &mut selections {
2562 let start = selection.start.to_display_point(&display_map);
2563 let end = selection.end.to_display_point(&display_map);
2564
2565 if start != end {
2566 selection.start = selection.end.clone();
2567 } else {
2568 let cursor = movement::right(&display_map, end)
2569 .unwrap()
2570 .to_point(&display_map);
2571 selection.start = cursor;
2572 selection.end = cursor;
2573 }
2574 selection.reversed = false;
2575 selection.goal = SelectionGoal::None;
2576 }
2577 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2578 }
2579
2580 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
2581 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2582 let mut selections = self.local_selections::<Point>(cx);
2583 for selection in &mut selections {
2584 let head = selection.head().to_display_point(&display_map);
2585 let cursor = movement::right(&display_map, head)
2586 .unwrap()
2587 .to_point(&display_map);
2588 selection.set_head(cursor);
2589 selection.goal = SelectionGoal::None;
2590 }
2591 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2592 }
2593
2594 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
2595 if let Some(completion_state) = &mut self.completion_state {
2596 if completion_state.selected_item > 0 {
2597 completion_state.selected_item -= 1;
2598 completion_state
2599 .list
2600 .scroll_to(ScrollTarget::Show(completion_state.selected_item));
2601 }
2602 cx.notify();
2603 return;
2604 }
2605
2606 if matches!(self.mode, EditorMode::SingleLine) {
2607 cx.propagate_action();
2608 return;
2609 }
2610
2611 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2612 let mut selections = self.local_selections::<Point>(cx);
2613 for selection in &mut selections {
2614 let start = selection.start.to_display_point(&display_map);
2615 let end = selection.end.to_display_point(&display_map);
2616 if start != end {
2617 selection.goal = SelectionGoal::None;
2618 }
2619
2620 let (start, goal) = movement::up(&display_map, start, selection.goal).unwrap();
2621 let cursor = start.to_point(&display_map);
2622 selection.start = cursor;
2623 selection.end = cursor;
2624 selection.goal = goal;
2625 selection.reversed = false;
2626 }
2627 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2628 }
2629
2630 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
2631 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2632 let mut selections = self.local_selections::<Point>(cx);
2633 for selection in &mut selections {
2634 let head = selection.head().to_display_point(&display_map);
2635 let (head, goal) = movement::up(&display_map, head, selection.goal).unwrap();
2636 let cursor = head.to_point(&display_map);
2637 selection.set_head(cursor);
2638 selection.goal = goal;
2639 }
2640 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2641 }
2642
2643 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
2644 if let Some(completion_state) = &mut self.completion_state {
2645 if completion_state.selected_item + 1 < completion_state.matches.len() {
2646 completion_state.selected_item += 1;
2647 completion_state
2648 .list
2649 .scroll_to(ScrollTarget::Show(completion_state.selected_item));
2650 }
2651 cx.notify();
2652 return;
2653 }
2654
2655 if matches!(self.mode, EditorMode::SingleLine) {
2656 cx.propagate_action();
2657 return;
2658 }
2659
2660 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2661 let mut selections = self.local_selections::<Point>(cx);
2662 for selection in &mut selections {
2663 let start = selection.start.to_display_point(&display_map);
2664 let end = selection.end.to_display_point(&display_map);
2665 if start != end {
2666 selection.goal = SelectionGoal::None;
2667 }
2668
2669 let (start, goal) = movement::down(&display_map, end, selection.goal).unwrap();
2670 let cursor = start.to_point(&display_map);
2671 selection.start = cursor;
2672 selection.end = cursor;
2673 selection.goal = goal;
2674 selection.reversed = false;
2675 }
2676 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2677 }
2678
2679 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
2680 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2681 let mut selections = self.local_selections::<Point>(cx);
2682 for selection in &mut selections {
2683 let head = selection.head().to_display_point(&display_map);
2684 let (head, goal) = movement::down(&display_map, head, selection.goal).unwrap();
2685 let cursor = head.to_point(&display_map);
2686 selection.set_head(cursor);
2687 selection.goal = goal;
2688 }
2689 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2690 }
2691
2692 pub fn move_to_previous_word_boundary(
2693 &mut self,
2694 _: &MoveToPreviousWordBoundary,
2695 cx: &mut ViewContext<Self>,
2696 ) {
2697 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2698 let mut selections = self.local_selections::<Point>(cx);
2699 for selection in &mut selections {
2700 let head = selection.head().to_display_point(&display_map);
2701 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2702 selection.start = cursor.clone();
2703 selection.end = cursor;
2704 selection.reversed = false;
2705 selection.goal = SelectionGoal::None;
2706 }
2707 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2708 }
2709
2710 pub fn select_to_previous_word_boundary(
2711 &mut self,
2712 _: &SelectToPreviousWordBoundary,
2713 cx: &mut ViewContext<Self>,
2714 ) {
2715 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2716 let mut selections = self.local_selections::<Point>(cx);
2717 for selection in &mut selections {
2718 let head = selection.head().to_display_point(&display_map);
2719 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2720 selection.set_head(cursor);
2721 selection.goal = SelectionGoal::None;
2722 }
2723 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2724 }
2725
2726 pub fn delete_to_previous_word_boundary(
2727 &mut self,
2728 _: &DeleteToPreviousWordBoundary,
2729 cx: &mut ViewContext<Self>,
2730 ) {
2731 self.start_transaction(cx);
2732 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2733 let mut selections = self.local_selections::<Point>(cx);
2734 for selection in &mut selections {
2735 if selection.is_empty() {
2736 let head = selection.head().to_display_point(&display_map);
2737 let cursor =
2738 movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2739 selection.set_head(cursor);
2740 selection.goal = SelectionGoal::None;
2741 }
2742 }
2743 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2744 self.insert("", cx);
2745 self.end_transaction(cx);
2746 }
2747
2748 pub fn move_to_next_word_boundary(
2749 &mut self,
2750 _: &MoveToNextWordBoundary,
2751 cx: &mut ViewContext<Self>,
2752 ) {
2753 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2754 let mut selections = self.local_selections::<Point>(cx);
2755 for selection in &mut selections {
2756 let head = selection.head().to_display_point(&display_map);
2757 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
2758 selection.start = cursor;
2759 selection.end = cursor;
2760 selection.reversed = false;
2761 selection.goal = SelectionGoal::None;
2762 }
2763 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2764 }
2765
2766 pub fn select_to_next_word_boundary(
2767 &mut self,
2768 _: &SelectToNextWordBoundary,
2769 cx: &mut ViewContext<Self>,
2770 ) {
2771 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2772 let mut selections = self.local_selections::<Point>(cx);
2773 for selection in &mut selections {
2774 let head = selection.head().to_display_point(&display_map);
2775 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
2776 selection.set_head(cursor);
2777 selection.goal = SelectionGoal::None;
2778 }
2779 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2780 }
2781
2782 pub fn delete_to_next_word_boundary(
2783 &mut self,
2784 _: &DeleteToNextWordBoundary,
2785 cx: &mut ViewContext<Self>,
2786 ) {
2787 self.start_transaction(cx);
2788 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2789 let mut selections = self.local_selections::<Point>(cx);
2790 for selection in &mut selections {
2791 if selection.is_empty() {
2792 let head = selection.head().to_display_point(&display_map);
2793 let cursor =
2794 movement::next_word_boundary(&display_map, head).to_point(&display_map);
2795 selection.set_head(cursor);
2796 selection.goal = SelectionGoal::None;
2797 }
2798 }
2799 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2800 self.insert("", cx);
2801 self.end_transaction(cx);
2802 }
2803
2804 pub fn move_to_beginning_of_line(
2805 &mut self,
2806 _: &MoveToBeginningOfLine,
2807 cx: &mut ViewContext<Self>,
2808 ) {
2809 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2810 let mut selections = self.local_selections::<Point>(cx);
2811 for selection in &mut selections {
2812 let head = selection.head().to_display_point(&display_map);
2813 let new_head = movement::line_beginning(&display_map, head, true);
2814 let cursor = new_head.to_point(&display_map);
2815 selection.start = cursor;
2816 selection.end = cursor;
2817 selection.reversed = false;
2818 selection.goal = SelectionGoal::None;
2819 }
2820 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2821 }
2822
2823 pub fn select_to_beginning_of_line(
2824 &mut self,
2825 SelectToBeginningOfLine(toggle_indent): &SelectToBeginningOfLine,
2826 cx: &mut ViewContext<Self>,
2827 ) {
2828 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2829 let mut selections = self.local_selections::<Point>(cx);
2830 for selection in &mut selections {
2831 let head = selection.head().to_display_point(&display_map);
2832 let new_head = movement::line_beginning(&display_map, head, *toggle_indent);
2833 selection.set_head(new_head.to_point(&display_map));
2834 selection.goal = SelectionGoal::None;
2835 }
2836 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2837 }
2838
2839 pub fn delete_to_beginning_of_line(
2840 &mut self,
2841 _: &DeleteToBeginningOfLine,
2842 cx: &mut ViewContext<Self>,
2843 ) {
2844 self.start_transaction(cx);
2845 self.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
2846 self.backspace(&Backspace, cx);
2847 self.end_transaction(cx);
2848 }
2849
2850 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
2851 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2852 let mut selections = self.local_selections::<Point>(cx);
2853 {
2854 for selection in &mut selections {
2855 let head = selection.head().to_display_point(&display_map);
2856 let new_head = movement::line_end(&display_map, head);
2857 let anchor = new_head.to_point(&display_map);
2858 selection.start = anchor.clone();
2859 selection.end = anchor;
2860 selection.reversed = false;
2861 selection.goal = SelectionGoal::None;
2862 }
2863 }
2864 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2865 }
2866
2867 pub fn select_to_end_of_line(&mut self, _: &SelectToEndOfLine, cx: &mut ViewContext<Self>) {
2868 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2869 let mut selections = self.local_selections::<Point>(cx);
2870 for selection in &mut selections {
2871 let head = selection.head().to_display_point(&display_map);
2872 let new_head = movement::line_end(&display_map, head);
2873 selection.set_head(new_head.to_point(&display_map));
2874 selection.goal = SelectionGoal::None;
2875 }
2876 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2877 }
2878
2879 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
2880 self.start_transaction(cx);
2881 self.select_to_end_of_line(&SelectToEndOfLine, cx);
2882 self.delete(&Delete, cx);
2883 self.end_transaction(cx);
2884 }
2885
2886 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
2887 self.start_transaction(cx);
2888 self.select_to_end_of_line(&SelectToEndOfLine, cx);
2889 self.cut(&Cut, cx);
2890 self.end_transaction(cx);
2891 }
2892
2893 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
2894 if matches!(self.mode, EditorMode::SingleLine) {
2895 cx.propagate_action();
2896 return;
2897 }
2898
2899 let selection = Selection {
2900 id: post_inc(&mut self.next_selection_id),
2901 start: 0,
2902 end: 0,
2903 reversed: false,
2904 goal: SelectionGoal::None,
2905 };
2906 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2907 }
2908
2909 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
2910 let mut selection = self.local_selections::<Point>(cx).last().unwrap().clone();
2911 selection.set_head(Point::zero());
2912 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2913 }
2914
2915 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
2916 if matches!(self.mode, EditorMode::SingleLine) {
2917 cx.propagate_action();
2918 return;
2919 }
2920
2921 let cursor = self.buffer.read(cx).read(cx).len();
2922 let selection = Selection {
2923 id: post_inc(&mut self.next_selection_id),
2924 start: cursor,
2925 end: cursor,
2926 reversed: false,
2927 goal: SelectionGoal::None,
2928 };
2929 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2930 }
2931
2932 pub fn set_nav_history(&mut self, nav_history: Option<ItemNavHistory>) {
2933 self.nav_history = nav_history;
2934 }
2935
2936 pub fn nav_history(&self) -> Option<&ItemNavHistory> {
2937 self.nav_history.as_ref()
2938 }
2939
2940 fn push_to_nav_history(
2941 &self,
2942 position: Anchor,
2943 new_position: Option<Point>,
2944 cx: &mut ViewContext<Self>,
2945 ) {
2946 if let Some(nav_history) = &self.nav_history {
2947 let buffer = self.buffer.read(cx).read(cx);
2948 let offset = position.to_offset(&buffer);
2949 let point = position.to_point(&buffer);
2950 drop(buffer);
2951
2952 if let Some(new_position) = new_position {
2953 let row_delta = (new_position.row as i64 - point.row as i64).abs();
2954 if row_delta < MIN_NAVIGATION_HISTORY_ROW_DELTA {
2955 return;
2956 }
2957 }
2958
2959 nav_history.push(Some(NavigationData {
2960 anchor: position,
2961 offset,
2962 }));
2963 }
2964 }
2965
2966 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
2967 let mut selection = self.local_selections::<usize>(cx).first().unwrap().clone();
2968 selection.set_head(self.buffer.read(cx).read(cx).len());
2969 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2970 }
2971
2972 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
2973 let selection = Selection {
2974 id: post_inc(&mut self.next_selection_id),
2975 start: 0,
2976 end: self.buffer.read(cx).read(cx).len(),
2977 reversed: false,
2978 goal: SelectionGoal::None,
2979 };
2980 self.update_selections(vec![selection], None, cx);
2981 }
2982
2983 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
2984 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2985 let mut selections = self.local_selections::<Point>(cx);
2986 let max_point = display_map.buffer_snapshot.max_point();
2987 for selection in &mut selections {
2988 let rows = selection.spanned_rows(true, &display_map);
2989 selection.start = Point::new(rows.start, 0);
2990 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
2991 selection.reversed = false;
2992 }
2993 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2994 }
2995
2996 pub fn split_selection_into_lines(
2997 &mut self,
2998 _: &SplitSelectionIntoLines,
2999 cx: &mut ViewContext<Self>,
3000 ) {
3001 let mut to_unfold = Vec::new();
3002 let mut new_selections = Vec::new();
3003 {
3004 let selections = self.local_selections::<Point>(cx);
3005 let buffer = self.buffer.read(cx).read(cx);
3006 for selection in selections {
3007 for row in selection.start.row..selection.end.row {
3008 let cursor = Point::new(row, buffer.line_len(row));
3009 new_selections.push(Selection {
3010 id: post_inc(&mut self.next_selection_id),
3011 start: cursor,
3012 end: cursor,
3013 reversed: false,
3014 goal: SelectionGoal::None,
3015 });
3016 }
3017 new_selections.push(Selection {
3018 id: selection.id,
3019 start: selection.end,
3020 end: selection.end,
3021 reversed: false,
3022 goal: SelectionGoal::None,
3023 });
3024 to_unfold.push(selection.start..selection.end);
3025 }
3026 }
3027 self.unfold_ranges(to_unfold, cx);
3028 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3029 }
3030
3031 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
3032 self.add_selection(true, cx);
3033 }
3034
3035 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
3036 self.add_selection(false, cx);
3037 }
3038
3039 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
3040 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3041 let mut selections = self.local_selections::<Point>(cx);
3042 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
3043 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
3044 let range = oldest_selection.display_range(&display_map).sorted();
3045 let columns = cmp::min(range.start.column(), range.end.column())
3046 ..cmp::max(range.start.column(), range.end.column());
3047
3048 selections.clear();
3049 let mut stack = Vec::new();
3050 for row in range.start.row()..=range.end.row() {
3051 if let Some(selection) = self.build_columnar_selection(
3052 &display_map,
3053 row,
3054 &columns,
3055 oldest_selection.reversed,
3056 ) {
3057 stack.push(selection.id);
3058 selections.push(selection);
3059 }
3060 }
3061
3062 if above {
3063 stack.reverse();
3064 }
3065
3066 AddSelectionsState { above, stack }
3067 });
3068
3069 let last_added_selection = *state.stack.last().unwrap();
3070 let mut new_selections = Vec::new();
3071 if above == state.above {
3072 let end_row = if above {
3073 0
3074 } else {
3075 display_map.max_point().row()
3076 };
3077
3078 'outer: for selection in selections {
3079 if selection.id == last_added_selection {
3080 let range = selection.display_range(&display_map).sorted();
3081 debug_assert_eq!(range.start.row(), range.end.row());
3082 let mut row = range.start.row();
3083 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
3084 {
3085 start..end
3086 } else {
3087 cmp::min(range.start.column(), range.end.column())
3088 ..cmp::max(range.start.column(), range.end.column())
3089 };
3090
3091 while row != end_row {
3092 if above {
3093 row -= 1;
3094 } else {
3095 row += 1;
3096 }
3097
3098 if let Some(new_selection) = self.build_columnar_selection(
3099 &display_map,
3100 row,
3101 &columns,
3102 selection.reversed,
3103 ) {
3104 state.stack.push(new_selection.id);
3105 if above {
3106 new_selections.push(new_selection);
3107 new_selections.push(selection);
3108 } else {
3109 new_selections.push(selection);
3110 new_selections.push(new_selection);
3111 }
3112
3113 continue 'outer;
3114 }
3115 }
3116 }
3117
3118 new_selections.push(selection);
3119 }
3120 } else {
3121 new_selections = selections;
3122 new_selections.retain(|s| s.id != last_added_selection);
3123 state.stack.pop();
3124 }
3125
3126 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3127 if state.stack.len() > 1 {
3128 self.add_selections_state = Some(state);
3129 }
3130 }
3131
3132 pub fn select_next(&mut self, action: &SelectNext, cx: &mut ViewContext<Self>) {
3133 let replace_newest = action.0;
3134 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3135 let buffer = &display_map.buffer_snapshot;
3136 let mut selections = self.local_selections::<usize>(cx);
3137 if let Some(mut select_next_state) = self.select_next_state.take() {
3138 let query = &select_next_state.query;
3139 if !select_next_state.done {
3140 let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
3141 let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
3142 let mut next_selected_range = None;
3143
3144 let bytes_after_last_selection =
3145 buffer.bytes_in_range(last_selection.end..buffer.len());
3146 let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
3147 let query_matches = query
3148 .stream_find_iter(bytes_after_last_selection)
3149 .map(|result| (last_selection.end, result))
3150 .chain(
3151 query
3152 .stream_find_iter(bytes_before_first_selection)
3153 .map(|result| (0, result)),
3154 );
3155 for (start_offset, query_match) in query_matches {
3156 let query_match = query_match.unwrap(); // can only fail due to I/O
3157 let offset_range =
3158 start_offset + query_match.start()..start_offset + query_match.end();
3159 let display_range = offset_range.start.to_display_point(&display_map)
3160 ..offset_range.end.to_display_point(&display_map);
3161
3162 if !select_next_state.wordwise
3163 || (!movement::is_inside_word(&display_map, display_range.start)
3164 && !movement::is_inside_word(&display_map, display_range.end))
3165 {
3166 next_selected_range = Some(offset_range);
3167 break;
3168 }
3169 }
3170
3171 if let Some(next_selected_range) = next_selected_range {
3172 if replace_newest {
3173 if let Some(newest_id) =
3174 selections.iter().max_by_key(|s| s.id).map(|s| s.id)
3175 {
3176 selections.retain(|s| s.id != newest_id);
3177 }
3178 }
3179 selections.push(Selection {
3180 id: post_inc(&mut self.next_selection_id),
3181 start: next_selected_range.start,
3182 end: next_selected_range.end,
3183 reversed: false,
3184 goal: SelectionGoal::None,
3185 });
3186 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3187 } else {
3188 select_next_state.done = true;
3189 }
3190 }
3191
3192 self.select_next_state = Some(select_next_state);
3193 } else if selections.len() == 1 {
3194 let selection = selections.last_mut().unwrap();
3195 if selection.start == selection.end {
3196 let word_range = movement::surrounding_word(
3197 &display_map,
3198 selection.start.to_display_point(&display_map),
3199 );
3200 selection.start = word_range.start.to_offset(&display_map, Bias::Left);
3201 selection.end = word_range.end.to_offset(&display_map, Bias::Left);
3202 selection.goal = SelectionGoal::None;
3203 selection.reversed = false;
3204
3205 let query = buffer
3206 .text_for_range(selection.start..selection.end)
3207 .collect::<String>();
3208 let select_state = SelectNextState {
3209 query: AhoCorasick::new_auto_configured(&[query]),
3210 wordwise: true,
3211 done: false,
3212 };
3213 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3214 self.select_next_state = Some(select_state);
3215 } else {
3216 let query = buffer
3217 .text_for_range(selection.start..selection.end)
3218 .collect::<String>();
3219 self.select_next_state = Some(SelectNextState {
3220 query: AhoCorasick::new_auto_configured(&[query]),
3221 wordwise: false,
3222 done: false,
3223 });
3224 self.select_next(action, cx);
3225 }
3226 }
3227 }
3228
3229 pub fn toggle_comments(&mut self, _: &ToggleComments, cx: &mut ViewContext<Self>) {
3230 // Get the line comment prefix. Split its trailing whitespace into a separate string,
3231 // as that portion won't be used for detecting if a line is a comment.
3232 let full_comment_prefix =
3233 if let Some(prefix) = self.language(cx).and_then(|l| l.line_comment_prefix()) {
3234 prefix.to_string()
3235 } else {
3236 return;
3237 };
3238 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
3239 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
3240
3241 self.start_transaction(cx);
3242 let mut selections = self.local_selections::<Point>(cx);
3243 let mut all_selection_lines_are_comments = true;
3244 let mut edit_ranges = Vec::new();
3245 let mut last_toggled_row = None;
3246 self.buffer.update(cx, |buffer, cx| {
3247 for selection in &mut selections {
3248 edit_ranges.clear();
3249 let snapshot = buffer.snapshot(cx);
3250
3251 let end_row =
3252 if selection.end.row > selection.start.row && selection.end.column == 0 {
3253 selection.end.row
3254 } else {
3255 selection.end.row + 1
3256 };
3257
3258 for row in selection.start.row..end_row {
3259 // If multiple selections contain a given row, avoid processing that
3260 // row more than once.
3261 if last_toggled_row == Some(row) {
3262 continue;
3263 } else {
3264 last_toggled_row = Some(row);
3265 }
3266
3267 if snapshot.is_line_blank(row) {
3268 continue;
3269 }
3270
3271 let start = Point::new(row, snapshot.indent_column_for_line(row));
3272 let mut line_bytes = snapshot
3273 .bytes_in_range(start..snapshot.max_point())
3274 .flatten()
3275 .copied();
3276
3277 // If this line currently begins with the line comment prefix, then record
3278 // the range containing the prefix.
3279 if all_selection_lines_are_comments
3280 && line_bytes
3281 .by_ref()
3282 .take(comment_prefix.len())
3283 .eq(comment_prefix.bytes())
3284 {
3285 // Include any whitespace that matches the comment prefix.
3286 let matching_whitespace_len = line_bytes
3287 .zip(comment_prefix_whitespace.bytes())
3288 .take_while(|(a, b)| a == b)
3289 .count() as u32;
3290 let end = Point::new(
3291 row,
3292 start.column + comment_prefix.len() as u32 + matching_whitespace_len,
3293 );
3294 edit_ranges.push(start..end);
3295 }
3296 // If this line does not begin with the line comment prefix, then record
3297 // the position where the prefix should be inserted.
3298 else {
3299 all_selection_lines_are_comments = false;
3300 edit_ranges.push(start..start);
3301 }
3302 }
3303
3304 if !edit_ranges.is_empty() {
3305 if all_selection_lines_are_comments {
3306 buffer.edit(edit_ranges.iter().cloned(), "", cx);
3307 } else {
3308 let min_column = edit_ranges.iter().map(|r| r.start.column).min().unwrap();
3309 let edit_ranges = edit_ranges.iter().map(|range| {
3310 let position = Point::new(range.start.row, min_column);
3311 position..position
3312 });
3313 buffer.edit(edit_ranges, &full_comment_prefix, cx);
3314 }
3315 }
3316 }
3317 });
3318
3319 self.update_selections(
3320 self.local_selections::<usize>(cx),
3321 Some(Autoscroll::Fit),
3322 cx,
3323 );
3324 self.end_transaction(cx);
3325 }
3326
3327 pub fn select_larger_syntax_node(
3328 &mut self,
3329 _: &SelectLargerSyntaxNode,
3330 cx: &mut ViewContext<Self>,
3331 ) {
3332 let old_selections = self.local_selections::<usize>(cx).into_boxed_slice();
3333 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3334 let buffer = self.buffer.read(cx).snapshot(cx);
3335
3336 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
3337 let mut selected_larger_node = false;
3338 let new_selections = old_selections
3339 .iter()
3340 .map(|selection| {
3341 let old_range = selection.start..selection.end;
3342 let mut new_range = old_range.clone();
3343 while let Some(containing_range) =
3344 buffer.range_for_syntax_ancestor(new_range.clone())
3345 {
3346 new_range = containing_range;
3347 if !display_map.intersects_fold(new_range.start)
3348 && !display_map.intersects_fold(new_range.end)
3349 {
3350 break;
3351 }
3352 }
3353
3354 selected_larger_node |= new_range != old_range;
3355 Selection {
3356 id: selection.id,
3357 start: new_range.start,
3358 end: new_range.end,
3359 goal: SelectionGoal::None,
3360 reversed: selection.reversed,
3361 }
3362 })
3363 .collect::<Vec<_>>();
3364
3365 if selected_larger_node {
3366 stack.push(old_selections);
3367 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3368 }
3369 self.select_larger_syntax_node_stack = stack;
3370 }
3371
3372 pub fn select_smaller_syntax_node(
3373 &mut self,
3374 _: &SelectSmallerSyntaxNode,
3375 cx: &mut ViewContext<Self>,
3376 ) {
3377 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
3378 if let Some(selections) = stack.pop() {
3379 self.update_selections(selections.to_vec(), Some(Autoscroll::Fit), cx);
3380 }
3381 self.select_larger_syntax_node_stack = stack;
3382 }
3383
3384 pub fn move_to_enclosing_bracket(
3385 &mut self,
3386 _: &MoveToEnclosingBracket,
3387 cx: &mut ViewContext<Self>,
3388 ) {
3389 let mut selections = self.local_selections::<usize>(cx);
3390 let buffer = self.buffer.read(cx).snapshot(cx);
3391 for selection in &mut selections {
3392 if let Some((open_range, close_range)) =
3393 buffer.enclosing_bracket_ranges(selection.start..selection.end)
3394 {
3395 let close_range = close_range.to_inclusive();
3396 let destination = if close_range.contains(&selection.start)
3397 && close_range.contains(&selection.end)
3398 {
3399 open_range.end
3400 } else {
3401 *close_range.start()
3402 };
3403 selection.start = destination;
3404 selection.end = destination;
3405 }
3406 }
3407
3408 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3409 }
3410
3411 pub fn show_next_diagnostic(&mut self, _: &ShowNextDiagnostic, cx: &mut ViewContext<Self>) {
3412 let buffer = self.buffer.read(cx).snapshot(cx);
3413 let selection = self.newest_selection::<usize>(&buffer);
3414 let active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
3415 active_diagnostics
3416 .primary_range
3417 .to_offset(&buffer)
3418 .to_inclusive()
3419 });
3420 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
3421 if active_primary_range.contains(&selection.head()) {
3422 *active_primary_range.end()
3423 } else {
3424 selection.head()
3425 }
3426 } else {
3427 selection.head()
3428 };
3429
3430 loop {
3431 let next_group = buffer
3432 .diagnostics_in_range::<_, usize>(search_start..buffer.len())
3433 .find_map(|entry| {
3434 if entry.diagnostic.is_primary
3435 && !entry.range.is_empty()
3436 && Some(entry.range.end) != active_primary_range.as_ref().map(|r| *r.end())
3437 {
3438 Some((entry.range, entry.diagnostic.group_id))
3439 } else {
3440 None
3441 }
3442 });
3443
3444 if let Some((primary_range, group_id)) = next_group {
3445 self.activate_diagnostics(group_id, cx);
3446 self.update_selections(
3447 vec![Selection {
3448 id: selection.id,
3449 start: primary_range.start,
3450 end: primary_range.start,
3451 reversed: false,
3452 goal: SelectionGoal::None,
3453 }],
3454 Some(Autoscroll::Center),
3455 cx,
3456 );
3457 break;
3458 } else if search_start == 0 {
3459 break;
3460 } else {
3461 // Cycle around to the start of the buffer.
3462 search_start = 0;
3463 }
3464 }
3465 }
3466
3467 pub fn go_to_definition(
3468 workspace: &mut Workspace,
3469 _: &GoToDefinition,
3470 cx: &mut ViewContext<Workspace>,
3471 ) {
3472 let active_item = workspace.active_item(cx);
3473 let editor_handle = if let Some(editor) = active_item
3474 .as_ref()
3475 .and_then(|item| item.act_as::<Self>(cx))
3476 {
3477 editor
3478 } else {
3479 return;
3480 };
3481
3482 let editor = editor_handle.read(cx);
3483 let buffer = editor.buffer.read(cx);
3484 let head = editor.newest_selection::<usize>(&buffer.read(cx)).head();
3485 let (buffer, head) = editor.buffer.read(cx).text_anchor_for_position(head, cx);
3486 let definitions = workspace
3487 .project()
3488 .update(cx, |project, cx| project.definition(&buffer, head, cx));
3489 cx.spawn(|workspace, mut cx| async move {
3490 let definitions = definitions.await?;
3491 workspace.update(&mut cx, |workspace, cx| {
3492 for definition in definitions {
3493 let range = definition
3494 .target_range
3495 .to_offset(definition.target_buffer.read(cx));
3496 let target_editor_handle = workspace
3497 .open_item(BufferItemHandle(definition.target_buffer), cx)
3498 .downcast::<Self>()
3499 .unwrap();
3500
3501 target_editor_handle.update(cx, |target_editor, cx| {
3502 // When selecting a definition in a different buffer, disable the nav history
3503 // to avoid creating a history entry at the previous cursor location.
3504 let disabled_history = if editor_handle == target_editor_handle {
3505 None
3506 } else {
3507 target_editor.nav_history.take()
3508 };
3509 target_editor.select_ranges([range], Some(Autoscroll::Center), cx);
3510 if disabled_history.is_some() {
3511 target_editor.nav_history = disabled_history;
3512 }
3513 });
3514 }
3515 });
3516
3517 Ok::<(), anyhow::Error>(())
3518 })
3519 .detach_and_log_err(cx);
3520 }
3521
3522 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
3523 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
3524 let buffer = self.buffer.read(cx).snapshot(cx);
3525 let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
3526 let is_valid = buffer
3527 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone())
3528 .any(|entry| {
3529 entry.diagnostic.is_primary
3530 && !entry.range.is_empty()
3531 && entry.range.start == primary_range_start
3532 && entry.diagnostic.message == active_diagnostics.primary_message
3533 });
3534
3535 if is_valid != active_diagnostics.is_valid {
3536 active_diagnostics.is_valid = is_valid;
3537 let mut new_styles = HashMap::default();
3538 for (block_id, diagnostic) in &active_diagnostics.blocks {
3539 new_styles.insert(
3540 *block_id,
3541 diagnostic_block_renderer(
3542 diagnostic.clone(),
3543 is_valid,
3544 self.build_settings.clone(),
3545 ),
3546 );
3547 }
3548 self.display_map
3549 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
3550 }
3551 }
3552 }
3553
3554 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) {
3555 self.dismiss_diagnostics(cx);
3556 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
3557 let buffer = self.buffer.read(cx).snapshot(cx);
3558
3559 let mut primary_range = None;
3560 let mut primary_message = None;
3561 let mut group_end = Point::zero();
3562 let diagnostic_group = buffer
3563 .diagnostic_group::<Point>(group_id)
3564 .map(|entry| {
3565 if entry.range.end > group_end {
3566 group_end = entry.range.end;
3567 }
3568 if entry.diagnostic.is_primary {
3569 primary_range = Some(entry.range.clone());
3570 primary_message = Some(entry.diagnostic.message.clone());
3571 }
3572 entry
3573 })
3574 .collect::<Vec<_>>();
3575 let primary_range = primary_range.unwrap();
3576 let primary_message = primary_message.unwrap();
3577 let primary_range =
3578 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
3579
3580 let blocks = display_map
3581 .insert_blocks(
3582 diagnostic_group.iter().map(|entry| {
3583 let build_settings = self.build_settings.clone();
3584 let diagnostic = entry.diagnostic.clone();
3585 let message_height = diagnostic.message.lines().count() as u8;
3586
3587 BlockProperties {
3588 position: buffer.anchor_after(entry.range.start),
3589 height: message_height,
3590 render: diagnostic_block_renderer(diagnostic, true, build_settings),
3591 disposition: BlockDisposition::Below,
3592 }
3593 }),
3594 cx,
3595 )
3596 .into_iter()
3597 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
3598 .collect();
3599
3600 Some(ActiveDiagnosticGroup {
3601 primary_range,
3602 primary_message,
3603 blocks,
3604 is_valid: true,
3605 })
3606 });
3607 }
3608
3609 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
3610 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
3611 self.display_map.update(cx, |display_map, cx| {
3612 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
3613 });
3614 cx.notify();
3615 }
3616 }
3617
3618 fn build_columnar_selection(
3619 &mut self,
3620 display_map: &DisplaySnapshot,
3621 row: u32,
3622 columns: &Range<u32>,
3623 reversed: bool,
3624 ) -> Option<Selection<Point>> {
3625 let is_empty = columns.start == columns.end;
3626 let line_len = display_map.line_len(row);
3627 if columns.start < line_len || (is_empty && columns.start == line_len) {
3628 let start = DisplayPoint::new(row, columns.start);
3629 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
3630 Some(Selection {
3631 id: post_inc(&mut self.next_selection_id),
3632 start: start.to_point(display_map),
3633 end: end.to_point(display_map),
3634 reversed,
3635 goal: SelectionGoal::ColumnRange {
3636 start: columns.start,
3637 end: columns.end,
3638 },
3639 })
3640 } else {
3641 None
3642 }
3643 }
3644
3645 pub fn local_selections_in_range(
3646 &self,
3647 range: Range<Anchor>,
3648 display_map: &DisplaySnapshot,
3649 ) -> Vec<Selection<Point>> {
3650 let buffer = &display_map.buffer_snapshot;
3651
3652 let start_ix = match self
3653 .selections
3654 .binary_search_by(|probe| probe.end.cmp(&range.start, &buffer).unwrap())
3655 {
3656 Ok(ix) | Err(ix) => ix,
3657 };
3658 let end_ix = match self
3659 .selections
3660 .binary_search_by(|probe| probe.start.cmp(&range.end, &buffer).unwrap())
3661 {
3662 Ok(ix) => ix + 1,
3663 Err(ix) => ix,
3664 };
3665
3666 fn point_selection(
3667 selection: &Selection<Anchor>,
3668 buffer: &MultiBufferSnapshot,
3669 ) -> Selection<Point> {
3670 let start = selection.start.to_point(&buffer);
3671 let end = selection.end.to_point(&buffer);
3672 Selection {
3673 id: selection.id,
3674 start,
3675 end,
3676 reversed: selection.reversed,
3677 goal: selection.goal,
3678 }
3679 }
3680
3681 self.selections[start_ix..end_ix]
3682 .iter()
3683 .chain(
3684 self.pending_selection
3685 .as_ref()
3686 .map(|pending| &pending.selection),
3687 )
3688 .map(|s| point_selection(s, &buffer))
3689 .collect()
3690 }
3691
3692 pub fn local_selections<'a, D>(&self, cx: &'a AppContext) -> Vec<Selection<D>>
3693 where
3694 D: 'a + TextDimension + Ord + Sub<D, Output = D>,
3695 {
3696 let buffer = self.buffer.read(cx).snapshot(cx);
3697 let mut selections = self
3698 .resolve_selections::<D, _>(self.selections.iter(), &buffer)
3699 .peekable();
3700
3701 let mut pending_selection = self.pending_selection::<D>(&buffer);
3702
3703 iter::from_fn(move || {
3704 if let Some(pending) = pending_selection.as_mut() {
3705 while let Some(next_selection) = selections.peek() {
3706 if pending.start <= next_selection.end && pending.end >= next_selection.start {
3707 let next_selection = selections.next().unwrap();
3708 if next_selection.start < pending.start {
3709 pending.start = next_selection.start;
3710 }
3711 if next_selection.end > pending.end {
3712 pending.end = next_selection.end;
3713 }
3714 } else if next_selection.end < pending.start {
3715 return selections.next();
3716 } else {
3717 break;
3718 }
3719 }
3720
3721 pending_selection.take()
3722 } else {
3723 selections.next()
3724 }
3725 })
3726 .collect()
3727 }
3728
3729 fn resolve_selections<'a, D, I>(
3730 &self,
3731 selections: I,
3732 snapshot: &MultiBufferSnapshot,
3733 ) -> impl 'a + Iterator<Item = Selection<D>>
3734 where
3735 D: TextDimension + Ord + Sub<D, Output = D>,
3736 I: 'a + IntoIterator<Item = &'a Selection<Anchor>>,
3737 {
3738 let (to_summarize, selections) = selections.into_iter().tee();
3739 let mut summaries = snapshot
3740 .summaries_for_anchors::<D, _>(to_summarize.flat_map(|s| [&s.start, &s.end]))
3741 .into_iter();
3742 selections.map(move |s| Selection {
3743 id: s.id,
3744 start: summaries.next().unwrap(),
3745 end: summaries.next().unwrap(),
3746 reversed: s.reversed,
3747 goal: s.goal,
3748 })
3749 }
3750
3751 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3752 &self,
3753 snapshot: &MultiBufferSnapshot,
3754 ) -> Option<Selection<D>> {
3755 self.pending_selection
3756 .as_ref()
3757 .map(|pending| self.resolve_selection(&pending.selection, &snapshot))
3758 }
3759
3760 fn resolve_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3761 &self,
3762 selection: &Selection<Anchor>,
3763 buffer: &MultiBufferSnapshot,
3764 ) -> Selection<D> {
3765 Selection {
3766 id: selection.id,
3767 start: selection.start.summary::<D>(&buffer),
3768 end: selection.end.summary::<D>(&buffer),
3769 reversed: selection.reversed,
3770 goal: selection.goal,
3771 }
3772 }
3773
3774 fn selection_count<'a>(&self) -> usize {
3775 let mut count = self.selections.len();
3776 if self.pending_selection.is_some() {
3777 count += 1;
3778 }
3779 count
3780 }
3781
3782 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3783 &self,
3784 snapshot: &MultiBufferSnapshot,
3785 ) -> Selection<D> {
3786 self.selections
3787 .iter()
3788 .min_by_key(|s| s.id)
3789 .map(|selection| self.resolve_selection(selection, snapshot))
3790 .or_else(|| self.pending_selection(snapshot))
3791 .unwrap()
3792 }
3793
3794 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3795 &self,
3796 snapshot: &MultiBufferSnapshot,
3797 ) -> Selection<D> {
3798 self.resolve_selection(self.newest_anchor_selection().unwrap(), snapshot)
3799 }
3800
3801 pub fn newest_anchor_selection(&self) -> Option<&Selection<Anchor>> {
3802 self.pending_selection
3803 .as_ref()
3804 .map(|s| &s.selection)
3805 .or_else(|| self.selections.iter().max_by_key(|s| s.id))
3806 }
3807
3808 pub fn update_selections<T>(
3809 &mut self,
3810 mut selections: Vec<Selection<T>>,
3811 autoscroll: Option<Autoscroll>,
3812 cx: &mut ViewContext<Self>,
3813 ) where
3814 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
3815 {
3816 let buffer = self.buffer.read(cx).snapshot(cx);
3817 selections.sort_unstable_by_key(|s| s.start);
3818
3819 // Merge overlapping selections.
3820 let mut i = 1;
3821 while i < selections.len() {
3822 if selections[i - 1].end >= selections[i].start {
3823 let removed = selections.remove(i);
3824 if removed.start < selections[i - 1].start {
3825 selections[i - 1].start = removed.start;
3826 }
3827 if removed.end > selections[i - 1].end {
3828 selections[i - 1].end = removed.end;
3829 }
3830 } else {
3831 i += 1;
3832 }
3833 }
3834
3835 if let Some(autoscroll) = autoscroll {
3836 self.request_autoscroll(autoscroll, cx);
3837 }
3838
3839 self.set_selections(
3840 Arc::from_iter(selections.into_iter().map(|selection| {
3841 let end_bias = if selection.end > selection.start {
3842 Bias::Left
3843 } else {
3844 Bias::Right
3845 };
3846 Selection {
3847 id: selection.id,
3848 start: buffer.anchor_after(selection.start),
3849 end: buffer.anchor_at(selection.end, end_bias),
3850 reversed: selection.reversed,
3851 goal: selection.goal,
3852 }
3853 })),
3854 cx,
3855 );
3856 }
3857
3858 /// Compute new ranges for any selections that were located in excerpts that have
3859 /// since been removed.
3860 ///
3861 /// Returns a `HashMap` indicating which selections whose former head position
3862 /// was no longer present. The keys of the map are selection ids. The values are
3863 /// the id of the new excerpt where the head of the selection has been moved.
3864 pub fn refresh_selections(&mut self, cx: &mut ViewContext<Self>) -> HashMap<usize, ExcerptId> {
3865 let snapshot = self.buffer.read(cx).read(cx);
3866 let anchors_with_status = snapshot.refresh_anchors(
3867 self.selections
3868 .iter()
3869 .flat_map(|selection| [&selection.start, &selection.end]),
3870 );
3871 let offsets =
3872 snapshot.summaries_for_anchors::<usize, _>(anchors_with_status.iter().map(|a| &a.1));
3873 let offsets = offsets.chunks(2);
3874 let statuses = anchors_with_status
3875 .chunks(2)
3876 .map(|a| (a[0].0 / 2, a[0].2, a[1].2));
3877
3878 let mut selections_with_lost_position = HashMap::default();
3879 let new_selections = offsets
3880 .zip(statuses)
3881 .map(|(offsets, (selection_ix, kept_start, kept_end))| {
3882 let selection = &self.selections[selection_ix];
3883 let kept_head = if selection.reversed {
3884 kept_start
3885 } else {
3886 kept_end
3887 };
3888 if !kept_head {
3889 selections_with_lost_position
3890 .insert(selection.id, selection.head().excerpt_id.clone());
3891 }
3892
3893 Selection {
3894 id: selection.id,
3895 start: offsets[0],
3896 end: offsets[1],
3897 reversed: selection.reversed,
3898 goal: selection.goal,
3899 }
3900 })
3901 .collect();
3902 drop(snapshot);
3903 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3904 selections_with_lost_position
3905 }
3906
3907 fn set_selections(&mut self, selections: Arc<[Selection<Anchor>]>, cx: &mut ViewContext<Self>) {
3908 let old_cursor_position = self.newest_anchor_selection().map(|s| s.head());
3909 self.selections = selections;
3910 if self.focused {
3911 self.buffer.update(cx, |buffer, cx| {
3912 buffer.set_active_selections(&self.selections, cx)
3913 });
3914 }
3915
3916 let buffer = self.buffer.read(cx).snapshot(cx);
3917 self.pending_selection = None;
3918 self.add_selections_state = None;
3919 self.select_next_state = None;
3920 self.select_larger_syntax_node_stack.clear();
3921 self.autoclose_stack.invalidate(&self.selections, &buffer);
3922 self.snippet_stack.invalidate(&self.selections, &buffer);
3923
3924 let new_cursor_position = self
3925 .selections
3926 .iter()
3927 .max_by_key(|s| s.id)
3928 .map(|s| s.head());
3929 if let Some(old_cursor_position) = old_cursor_position {
3930 if let Some(new_cursor_position) = new_cursor_position.as_ref() {
3931 self.push_to_nav_history(
3932 old_cursor_position,
3933 Some(new_cursor_position.to_point(&buffer)),
3934 cx,
3935 );
3936 }
3937 }
3938
3939 if let Some((completion_state, cursor_position)) =
3940 self.completion_state.as_mut().zip(new_cursor_position)
3941 {
3942 let cursor_position = cursor_position.to_offset(&buffer);
3943 let (word_range, kind) =
3944 buffer.surrounding_word(completion_state.initial_position.clone());
3945 if kind == Some(CharKind::Word) && word_range.to_inclusive().contains(&cursor_position)
3946 {
3947 let query = Self::completion_query(&buffer, cursor_position);
3948 smol::block_on(completion_state.filter(query.as_deref(), cx.background().clone()));
3949 self.show_completions(&ShowCompletions, cx);
3950 } else {
3951 self.hide_completions(cx);
3952 }
3953 }
3954
3955 self.pause_cursor_blinking(cx);
3956 cx.emit(Event::SelectionsChanged);
3957 }
3958
3959 pub fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
3960 self.autoscroll_request = Some(autoscroll);
3961 cx.notify();
3962 }
3963
3964 fn start_transaction(&mut self, cx: &mut ViewContext<Self>) {
3965 self.start_transaction_at(Instant::now(), cx);
3966 }
3967
3968 fn start_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
3969 self.end_selection(cx);
3970 if let Some(tx_id) = self
3971 .buffer
3972 .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
3973 {
3974 self.selection_history
3975 .insert(tx_id, (self.selections.clone(), None));
3976 }
3977 }
3978
3979 fn end_transaction(&mut self, cx: &mut ViewContext<Self>) {
3980 self.end_transaction_at(Instant::now(), cx);
3981 }
3982
3983 fn end_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
3984 if let Some(tx_id) = self
3985 .buffer
3986 .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
3987 {
3988 if let Some((_, end_selections)) = self.selection_history.get_mut(&tx_id) {
3989 *end_selections = Some(self.selections.clone());
3990 } else {
3991 log::error!("unexpectedly ended a transaction that wasn't started by this editor");
3992 }
3993 }
3994 }
3995
3996 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
3997 log::info!("Editor::page_up");
3998 }
3999
4000 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
4001 log::info!("Editor::page_down");
4002 }
4003
4004 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
4005 let mut fold_ranges = Vec::new();
4006
4007 let selections = self.local_selections::<Point>(cx);
4008 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4009 for selection in selections {
4010 let range = selection.display_range(&display_map).sorted();
4011 let buffer_start_row = range.start.to_point(&display_map).row;
4012
4013 for row in (0..=range.end.row()).rev() {
4014 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
4015 let fold_range = self.foldable_range_for_line(&display_map, row);
4016 if fold_range.end.row >= buffer_start_row {
4017 fold_ranges.push(fold_range);
4018 if row <= range.start.row() {
4019 break;
4020 }
4021 }
4022 }
4023 }
4024 }
4025
4026 self.fold_ranges(fold_ranges, cx);
4027 }
4028
4029 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
4030 let selections = self.local_selections::<Point>(cx);
4031 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4032 let buffer = &display_map.buffer_snapshot;
4033 let ranges = selections
4034 .iter()
4035 .map(|s| {
4036 let range = s.display_range(&display_map).sorted();
4037 let mut start = range.start.to_point(&display_map);
4038 let mut end = range.end.to_point(&display_map);
4039 start.column = 0;
4040 end.column = buffer.line_len(end.row);
4041 start..end
4042 })
4043 .collect::<Vec<_>>();
4044 self.unfold_ranges(ranges, cx);
4045 }
4046
4047 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
4048 let max_point = display_map.max_point();
4049 if display_row >= max_point.row() {
4050 false
4051 } else {
4052 let (start_indent, is_blank) = display_map.line_indent(display_row);
4053 if is_blank {
4054 false
4055 } else {
4056 for display_row in display_row + 1..=max_point.row() {
4057 let (indent, is_blank) = display_map.line_indent(display_row);
4058 if !is_blank {
4059 return indent > start_indent;
4060 }
4061 }
4062 false
4063 }
4064 }
4065 }
4066
4067 fn foldable_range_for_line(
4068 &self,
4069 display_map: &DisplaySnapshot,
4070 start_row: u32,
4071 ) -> Range<Point> {
4072 let max_point = display_map.max_point();
4073
4074 let (start_indent, _) = display_map.line_indent(start_row);
4075 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
4076 let mut end = None;
4077 for row in start_row + 1..=max_point.row() {
4078 let (indent, is_blank) = display_map.line_indent(row);
4079 if !is_blank && indent <= start_indent {
4080 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
4081 break;
4082 }
4083 }
4084
4085 let end = end.unwrap_or(max_point);
4086 return start.to_point(display_map)..end.to_point(display_map);
4087 }
4088
4089 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
4090 let selections = self.local_selections::<Point>(cx);
4091 let ranges = selections.into_iter().map(|s| s.start..s.end);
4092 self.fold_ranges(ranges, cx);
4093 }
4094
4095 fn fold_ranges<T: ToOffset>(
4096 &mut self,
4097 ranges: impl IntoIterator<Item = Range<T>>,
4098 cx: &mut ViewContext<Self>,
4099 ) {
4100 let mut ranges = ranges.into_iter().peekable();
4101 if ranges.peek().is_some() {
4102 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
4103 self.request_autoscroll(Autoscroll::Fit, cx);
4104 cx.notify();
4105 }
4106 }
4107
4108 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
4109 if !ranges.is_empty() {
4110 self.display_map
4111 .update(cx, |map, cx| map.unfold(ranges, cx));
4112 self.request_autoscroll(Autoscroll::Fit, cx);
4113 cx.notify();
4114 }
4115 }
4116
4117 pub fn insert_blocks(
4118 &mut self,
4119 blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
4120 cx: &mut ViewContext<Self>,
4121 ) -> Vec<BlockId> {
4122 let blocks = self
4123 .display_map
4124 .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
4125 self.request_autoscroll(Autoscroll::Fit, cx);
4126 blocks
4127 }
4128
4129 pub fn replace_blocks(
4130 &mut self,
4131 blocks: HashMap<BlockId, RenderBlock>,
4132 cx: &mut ViewContext<Self>,
4133 ) {
4134 self.display_map
4135 .update(cx, |display_map, _| display_map.replace_blocks(blocks));
4136 self.request_autoscroll(Autoscroll::Fit, cx);
4137 }
4138
4139 pub fn remove_blocks(&mut self, block_ids: HashSet<BlockId>, cx: &mut ViewContext<Self>) {
4140 self.display_map.update(cx, |display_map, cx| {
4141 display_map.remove_blocks(block_ids, cx)
4142 });
4143 }
4144
4145 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
4146 self.display_map
4147 .update(cx, |map, cx| map.snapshot(cx))
4148 .longest_row()
4149 }
4150
4151 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
4152 self.display_map
4153 .update(cx, |map, cx| map.snapshot(cx))
4154 .max_point()
4155 }
4156
4157 pub fn text(&self, cx: &AppContext) -> String {
4158 self.buffer.read(cx).read(cx).text()
4159 }
4160
4161 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
4162 self.display_map
4163 .update(cx, |map, cx| map.snapshot(cx))
4164 .text()
4165 }
4166
4167 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
4168 self.display_map
4169 .update(cx, |map, cx| map.set_wrap_width(width, cx))
4170 }
4171
4172 pub fn set_highlighted_rows(&mut self, rows: Option<Range<u32>>) {
4173 self.highlighted_rows = rows;
4174 }
4175
4176 pub fn highlighted_rows(&self) -> Option<Range<u32>> {
4177 self.highlighted_rows.clone()
4178 }
4179
4180 pub fn highlight_ranges<T: 'static>(
4181 &mut self,
4182 ranges: Vec<Range<Anchor>>,
4183 color: Color,
4184 cx: &mut ViewContext<Self>,
4185 ) {
4186 self.highlighted_ranges
4187 .insert(TypeId::of::<T>(), (color, ranges));
4188 cx.notify();
4189 }
4190
4191 pub fn clear_highlighted_ranges<T: 'static>(&mut self, cx: &mut ViewContext<Self>) {
4192 self.highlighted_ranges.remove(&TypeId::of::<T>());
4193 cx.notify();
4194 }
4195
4196 #[cfg(feature = "test-support")]
4197 pub fn all_highlighted_ranges(
4198 &mut self,
4199 cx: &mut ViewContext<Self>,
4200 ) -> Vec<(Range<DisplayPoint>, Color)> {
4201 let snapshot = self.snapshot(cx);
4202 let buffer = &snapshot.buffer_snapshot;
4203 let start = buffer.anchor_before(0);
4204 let end = buffer.anchor_after(buffer.len());
4205 self.highlighted_ranges_in_range(start..end, &snapshot)
4206 }
4207
4208 pub fn highlighted_ranges_for_type<T: 'static>(&self) -> Option<(Color, &[Range<Anchor>])> {
4209 self.highlighted_ranges
4210 .get(&TypeId::of::<T>())
4211 .map(|(color, ranges)| (*color, ranges.as_slice()))
4212 }
4213
4214 pub fn highlighted_ranges_in_range(
4215 &self,
4216 search_range: Range<Anchor>,
4217 display_snapshot: &DisplaySnapshot,
4218 ) -> Vec<(Range<DisplayPoint>, Color)> {
4219 let mut results = Vec::new();
4220 let buffer = &display_snapshot.buffer_snapshot;
4221 for (color, ranges) in self.highlighted_ranges.values() {
4222 let start_ix = match ranges.binary_search_by(|probe| {
4223 let cmp = probe.end.cmp(&search_range.start, &buffer).unwrap();
4224 if cmp.is_gt() {
4225 Ordering::Greater
4226 } else {
4227 Ordering::Less
4228 }
4229 }) {
4230 Ok(i) | Err(i) => i,
4231 };
4232 for range in &ranges[start_ix..] {
4233 if range.start.cmp(&search_range.end, &buffer).unwrap().is_ge() {
4234 break;
4235 }
4236 let start = range
4237 .start
4238 .to_point(buffer)
4239 .to_display_point(display_snapshot);
4240 let end = range
4241 .end
4242 .to_point(buffer)
4243 .to_display_point(display_snapshot);
4244 results.push((start..end, *color))
4245 }
4246 }
4247 results
4248 }
4249
4250 fn next_blink_epoch(&mut self) -> usize {
4251 self.blink_epoch += 1;
4252 self.blink_epoch
4253 }
4254
4255 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
4256 if !self.focused {
4257 return;
4258 }
4259
4260 self.show_local_cursors = true;
4261 cx.notify();
4262
4263 let epoch = self.next_blink_epoch();
4264 cx.spawn(|this, mut cx| {
4265 let this = this.downgrade();
4266 async move {
4267 Timer::after(CURSOR_BLINK_INTERVAL).await;
4268 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
4269 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
4270 }
4271 }
4272 })
4273 .detach();
4274 }
4275
4276 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
4277 if epoch == self.blink_epoch {
4278 self.blinking_paused = false;
4279 self.blink_cursors(epoch, cx);
4280 }
4281 }
4282
4283 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
4284 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
4285 self.show_local_cursors = !self.show_local_cursors;
4286 cx.notify();
4287
4288 let epoch = self.next_blink_epoch();
4289 cx.spawn(|this, mut cx| {
4290 let this = this.downgrade();
4291 async move {
4292 Timer::after(CURSOR_BLINK_INTERVAL).await;
4293 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
4294 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
4295 }
4296 }
4297 })
4298 .detach();
4299 }
4300 }
4301
4302 pub fn show_local_cursors(&self) -> bool {
4303 self.show_local_cursors
4304 }
4305
4306 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
4307 self.refresh_active_diagnostics(cx);
4308 cx.notify();
4309 }
4310
4311 fn on_buffer_event(
4312 &mut self,
4313 _: ModelHandle<MultiBuffer>,
4314 event: &language::Event,
4315 cx: &mut ViewContext<Self>,
4316 ) {
4317 match event {
4318 language::Event::Edited => cx.emit(Event::Edited),
4319 language::Event::Dirtied => cx.emit(Event::Dirtied),
4320 language::Event::Saved => cx.emit(Event::Saved),
4321 language::Event::FileHandleChanged => cx.emit(Event::TitleChanged),
4322 language::Event::Reloaded => cx.emit(Event::TitleChanged),
4323 language::Event::Closed => cx.emit(Event::Closed),
4324 _ => {}
4325 }
4326 }
4327
4328 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
4329 cx.notify();
4330 }
4331}
4332
4333impl EditorSnapshot {
4334 pub fn is_focused(&self) -> bool {
4335 self.is_focused
4336 }
4337
4338 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
4339 self.placeholder_text.as_ref()
4340 }
4341
4342 pub fn scroll_position(&self) -> Vector2F {
4343 compute_scroll_position(
4344 &self.display_snapshot,
4345 self.scroll_position,
4346 &self.scroll_top_anchor,
4347 )
4348 }
4349}
4350
4351impl Deref for EditorSnapshot {
4352 type Target = DisplaySnapshot;
4353
4354 fn deref(&self) -> &Self::Target {
4355 &self.display_snapshot
4356 }
4357}
4358
4359impl EditorSettings {
4360 #[cfg(any(test, feature = "test-support"))]
4361 pub fn test(cx: &AppContext) -> Self {
4362 use theme::{ContainedLabel, ContainedText, DiagnosticHeader, DiagnosticPathHeader};
4363
4364 Self {
4365 tab_size: 4,
4366 soft_wrap: SoftWrap::None,
4367 style: {
4368 let font_cache: &gpui::FontCache = cx.font_cache();
4369 let font_family_name = Arc::from("Monaco");
4370 let font_properties = Default::default();
4371 let font_family_id = font_cache.load_family(&[&font_family_name]).unwrap();
4372 let font_id = font_cache
4373 .select_font(font_family_id, &font_properties)
4374 .unwrap();
4375 let text = gpui::fonts::TextStyle {
4376 font_family_name,
4377 font_family_id,
4378 font_id,
4379 font_size: 14.,
4380 color: gpui::color::Color::from_u32(0xff0000ff),
4381 font_properties,
4382 underline: None,
4383 };
4384 let default_diagnostic_style = DiagnosticStyle {
4385 message: text.clone().into(),
4386 header: Default::default(),
4387 text_scale_factor: 1.,
4388 };
4389 EditorStyle {
4390 text: text.clone(),
4391 placeholder_text: None,
4392 background: Default::default(),
4393 gutter_background: Default::default(),
4394 gutter_padding_factor: 2.,
4395 active_line_background: Default::default(),
4396 highlighted_line_background: Default::default(),
4397 line_number: Default::default(),
4398 line_number_active: Default::default(),
4399 selection: Default::default(),
4400 guest_selections: Default::default(),
4401 syntax: Default::default(),
4402 diagnostic_path_header: DiagnosticPathHeader {
4403 container: Default::default(),
4404 filename: ContainedText {
4405 container: Default::default(),
4406 text: text.clone(),
4407 },
4408 path: ContainedText {
4409 container: Default::default(),
4410 text: text.clone(),
4411 },
4412 text_scale_factor: 1.,
4413 },
4414 diagnostic_header: DiagnosticHeader {
4415 container: Default::default(),
4416 message: ContainedLabel {
4417 container: Default::default(),
4418 label: text.clone().into(),
4419 },
4420 code: ContainedText {
4421 container: Default::default(),
4422 text: text.clone(),
4423 },
4424 icon_width_factor: 1.,
4425 text_scale_factor: 1.,
4426 },
4427 error_diagnostic: default_diagnostic_style.clone(),
4428 invalid_error_diagnostic: default_diagnostic_style.clone(),
4429 warning_diagnostic: default_diagnostic_style.clone(),
4430 invalid_warning_diagnostic: default_diagnostic_style.clone(),
4431 information_diagnostic: default_diagnostic_style.clone(),
4432 invalid_information_diagnostic: default_diagnostic_style.clone(),
4433 hint_diagnostic: default_diagnostic_style.clone(),
4434 invalid_hint_diagnostic: default_diagnostic_style.clone(),
4435 autocomplete: Default::default(),
4436 }
4437 },
4438 }
4439 }
4440}
4441
4442fn compute_scroll_position(
4443 snapshot: &DisplaySnapshot,
4444 mut scroll_position: Vector2F,
4445 scroll_top_anchor: &Option<Anchor>,
4446) -> Vector2F {
4447 if let Some(anchor) = scroll_top_anchor {
4448 let scroll_top = anchor.to_display_point(snapshot).row() as f32;
4449 scroll_position.set_y(scroll_top + scroll_position.y());
4450 } else {
4451 scroll_position.set_y(0.);
4452 }
4453 scroll_position
4454}
4455
4456#[derive(Copy, Clone)]
4457pub enum Event {
4458 Activate,
4459 Edited,
4460 Blurred,
4461 Dirtied,
4462 Saved,
4463 TitleChanged,
4464 SelectionsChanged,
4465 Closed,
4466}
4467
4468impl Entity for Editor {
4469 type Event = Event;
4470}
4471
4472impl View for Editor {
4473 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
4474 let settings = (self.build_settings)(cx);
4475 self.display_map.update(cx, |map, cx| {
4476 map.set_font(
4477 settings.style.text.font_id,
4478 settings.style.text.font_size,
4479 cx,
4480 )
4481 });
4482 EditorElement::new(self.handle.clone(), settings).boxed()
4483 }
4484
4485 fn ui_name() -> &'static str {
4486 "Editor"
4487 }
4488
4489 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
4490 self.focused = true;
4491 self.blink_cursors(self.blink_epoch, cx);
4492 self.buffer.update(cx, |buffer, cx| {
4493 buffer.avoid_grouping_next_transaction(cx);
4494 buffer.set_active_selections(&self.selections, cx)
4495 });
4496 }
4497
4498 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
4499 self.focused = false;
4500 self.show_local_cursors = false;
4501 self.buffer
4502 .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
4503 self.hide_completions(cx);
4504 cx.emit(Event::Blurred);
4505 cx.notify();
4506 }
4507
4508 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
4509 let mut cx = Self::default_keymap_context();
4510 let mode = match self.mode {
4511 EditorMode::SingleLine => "single_line",
4512 EditorMode::AutoHeight { .. } => "auto_height",
4513 EditorMode::Full => "full",
4514 };
4515 cx.map.insert("mode".into(), mode.into());
4516 if self.completion_state.is_some() {
4517 cx.set.insert("completing".into());
4518 }
4519 cx
4520 }
4521}
4522
4523impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
4524 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
4525 let start = self.start.to_point(buffer);
4526 let end = self.end.to_point(buffer);
4527 if self.reversed {
4528 end..start
4529 } else {
4530 start..end
4531 }
4532 }
4533
4534 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
4535 let start = self.start.to_offset(buffer);
4536 let end = self.end.to_offset(buffer);
4537 if self.reversed {
4538 end..start
4539 } else {
4540 start..end
4541 }
4542 }
4543
4544 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
4545 let start = self
4546 .start
4547 .to_point(&map.buffer_snapshot)
4548 .to_display_point(map);
4549 let end = self
4550 .end
4551 .to_point(&map.buffer_snapshot)
4552 .to_display_point(map);
4553 if self.reversed {
4554 end..start
4555 } else {
4556 start..end
4557 }
4558 }
4559
4560 fn spanned_rows(
4561 &self,
4562 include_end_if_at_line_start: bool,
4563 map: &DisplaySnapshot,
4564 ) -> Range<u32> {
4565 let start = self.start.to_point(&map.buffer_snapshot);
4566 let mut end = self.end.to_point(&map.buffer_snapshot);
4567 if !include_end_if_at_line_start && start.row != end.row && end.column == 0 {
4568 end.row -= 1;
4569 }
4570
4571 let buffer_start = map.prev_line_boundary(start).0;
4572 let buffer_end = map.next_line_boundary(end).0;
4573 buffer_start.row..buffer_end.row + 1
4574 }
4575}
4576
4577impl<T: InvalidationRegion> InvalidationStack<T> {
4578 fn invalidate<S>(&mut self, selections: &[Selection<S>], buffer: &MultiBufferSnapshot)
4579 where
4580 S: Clone + ToOffset,
4581 {
4582 while let Some(region) = self.last() {
4583 let all_selections_inside_invalidation_ranges =
4584 if selections.len() == region.ranges().len() {
4585 selections
4586 .iter()
4587 .zip(region.ranges().iter().map(|r| r.to_offset(&buffer)))
4588 .all(|(selection, invalidation_range)| {
4589 let head = selection.head().to_offset(&buffer);
4590 invalidation_range.start <= head && invalidation_range.end >= head
4591 })
4592 } else {
4593 false
4594 };
4595
4596 if all_selections_inside_invalidation_ranges {
4597 break;
4598 } else {
4599 self.pop();
4600 }
4601 }
4602 }
4603}
4604
4605impl<T> Default for InvalidationStack<T> {
4606 fn default() -> Self {
4607 Self(Default::default())
4608 }
4609}
4610
4611impl<T> Deref for InvalidationStack<T> {
4612 type Target = Vec<T>;
4613
4614 fn deref(&self) -> &Self::Target {
4615 &self.0
4616 }
4617}
4618
4619impl<T> DerefMut for InvalidationStack<T> {
4620 fn deref_mut(&mut self) -> &mut Self::Target {
4621 &mut self.0
4622 }
4623}
4624
4625impl InvalidationRegion for BracketPairState {
4626 fn ranges(&self) -> &[Range<Anchor>] {
4627 &self.ranges
4628 }
4629}
4630
4631impl InvalidationRegion for SnippetState {
4632 fn ranges(&self) -> &[Range<Anchor>] {
4633 &self.ranges[self.active_index]
4634 }
4635}
4636
4637pub fn diagnostic_block_renderer(
4638 diagnostic: Diagnostic,
4639 is_valid: bool,
4640 build_settings: BuildSettings,
4641) -> RenderBlock {
4642 let mut highlighted_lines = Vec::new();
4643 for line in diagnostic.message.lines() {
4644 highlighted_lines.push(highlight_diagnostic_message(line));
4645 }
4646
4647 Arc::new(move |cx: &BlockContext| {
4648 let settings = build_settings(cx);
4649 let style = diagnostic_style(diagnostic.severity, is_valid, &settings.style);
4650 let font_size = (style.text_scale_factor * settings.style.text.font_size).round();
4651 Flex::column()
4652 .with_children(highlighted_lines.iter().map(|(line, highlights)| {
4653 Label::new(
4654 line.clone(),
4655 style.message.clone().with_font_size(font_size),
4656 )
4657 .with_highlights(highlights.clone())
4658 .contained()
4659 .with_margin_left(cx.anchor_x)
4660 .boxed()
4661 }))
4662 .aligned()
4663 .left()
4664 .boxed()
4665 })
4666}
4667
4668pub fn highlight_diagnostic_message(message: &str) -> (String, Vec<usize>) {
4669 let mut message_without_backticks = String::new();
4670 let mut prev_offset = 0;
4671 let mut inside_block = false;
4672 let mut highlights = Vec::new();
4673 for (match_ix, (offset, _)) in message
4674 .match_indices('`')
4675 .chain([(message.len(), "")])
4676 .enumerate()
4677 {
4678 message_without_backticks.push_str(&message[prev_offset..offset]);
4679 if inside_block {
4680 highlights.extend(prev_offset - match_ix..offset - match_ix);
4681 }
4682
4683 inside_block = !inside_block;
4684 prev_offset = offset + 1;
4685 }
4686
4687 (message_without_backticks, highlights)
4688}
4689
4690pub fn diagnostic_style(
4691 severity: DiagnosticSeverity,
4692 valid: bool,
4693 style: &EditorStyle,
4694) -> DiagnosticStyle {
4695 match (severity, valid) {
4696 (DiagnosticSeverity::ERROR, true) => style.error_diagnostic.clone(),
4697 (DiagnosticSeverity::ERROR, false) => style.invalid_error_diagnostic.clone(),
4698 (DiagnosticSeverity::WARNING, true) => style.warning_diagnostic.clone(),
4699 (DiagnosticSeverity::WARNING, false) => style.invalid_warning_diagnostic.clone(),
4700 (DiagnosticSeverity::INFORMATION, true) => style.information_diagnostic.clone(),
4701 (DiagnosticSeverity::INFORMATION, false) => style.invalid_information_diagnostic.clone(),
4702 (DiagnosticSeverity::HINT, true) => style.hint_diagnostic.clone(),
4703 (DiagnosticSeverity::HINT, false) => style.invalid_hint_diagnostic.clone(),
4704 _ => DiagnosticStyle {
4705 message: style.text.clone().into(),
4706 header: Default::default(),
4707 text_scale_factor: 1.,
4708 },
4709 }
4710}
4711
4712pub fn settings_builder(
4713 buffer: WeakModelHandle<MultiBuffer>,
4714 settings: watch::Receiver<workspace::Settings>,
4715) -> BuildSettings {
4716 Arc::new(move |cx| {
4717 let settings = settings.borrow();
4718 let font_cache = cx.font_cache();
4719 let font_family_id = settings.buffer_font_family;
4720 let font_family_name = cx.font_cache().family_name(font_family_id).unwrap();
4721 let font_properties = Default::default();
4722 let font_id = font_cache
4723 .select_font(font_family_id, &font_properties)
4724 .unwrap();
4725 let font_size = settings.buffer_font_size;
4726
4727 let mut theme = settings.theme.editor.clone();
4728 theme.text = TextStyle {
4729 color: theme.text.color,
4730 font_family_name,
4731 font_family_id,
4732 font_id,
4733 font_size,
4734 font_properties,
4735 underline: None,
4736 };
4737 let language = buffer.upgrade(cx).and_then(|buf| buf.read(cx).language(cx));
4738 let soft_wrap = match settings.soft_wrap(language) {
4739 workspace::settings::SoftWrap::None => SoftWrap::None,
4740 workspace::settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
4741 workspace::settings::SoftWrap::PreferredLineLength => {
4742 SoftWrap::Column(settings.preferred_line_length(language).saturating_sub(1))
4743 }
4744 };
4745
4746 EditorSettings {
4747 tab_size: settings.tab_size,
4748 soft_wrap,
4749 style: theme,
4750 }
4751 })
4752}
4753
4754pub fn combine_syntax_and_fuzzy_match_highlights(
4755 text: &str,
4756 default_style: HighlightStyle,
4757 syntax_ranges: impl Iterator<Item = (Range<usize>, HighlightStyle)>,
4758 match_indices: &[usize],
4759) -> Vec<(Range<usize>, HighlightStyle)> {
4760 let mut result = Vec::new();
4761 let mut match_indices = match_indices.iter().copied().peekable();
4762
4763 for (range, mut syntax_highlight) in syntax_ranges.chain([(usize::MAX..0, Default::default())])
4764 {
4765 syntax_highlight.font_properties.weight(Default::default());
4766
4767 // Add highlights for any fuzzy match characters before the next
4768 // syntax highlight range.
4769 while let Some(&match_index) = match_indices.peek() {
4770 if match_index >= range.start {
4771 break;
4772 }
4773 match_indices.next();
4774 let end_index = char_ix_after(match_index, text);
4775 let mut match_style = default_style;
4776 match_style.font_properties.weight(fonts::Weight::BOLD);
4777 result.push((match_index..end_index, match_style));
4778 }
4779
4780 if range.start == usize::MAX {
4781 break;
4782 }
4783
4784 // Add highlights for any fuzzy match characters within the
4785 // syntax highlight range.
4786 let mut offset = range.start;
4787 while let Some(&match_index) = match_indices.peek() {
4788 if match_index >= range.end {
4789 break;
4790 }
4791
4792 match_indices.next();
4793 if match_index > offset {
4794 result.push((offset..match_index, syntax_highlight));
4795 }
4796
4797 let mut end_index = char_ix_after(match_index, text);
4798 while let Some(&next_match_index) = match_indices.peek() {
4799 if next_match_index == end_index && next_match_index < range.end {
4800 end_index = char_ix_after(next_match_index, text);
4801 match_indices.next();
4802 } else {
4803 break;
4804 }
4805 }
4806
4807 let mut match_style = syntax_highlight;
4808 match_style.font_properties.weight(fonts::Weight::BOLD);
4809 result.push((match_index..end_index, match_style));
4810 offset = end_index;
4811 }
4812
4813 if offset < range.end {
4814 result.push((offset..range.end, syntax_highlight));
4815 }
4816 }
4817
4818 fn char_ix_after(ix: usize, text: &str) -> usize {
4819 ix + text[ix..].chars().next().unwrap().len_utf8()
4820 }
4821
4822 result
4823}
4824
4825#[cfg(test)]
4826mod tests {
4827 use super::*;
4828 use language::{FakeFile, LanguageConfig};
4829 use std::{cell::RefCell, path::Path, rc::Rc, time::Instant};
4830 use text::Point;
4831 use unindent::Unindent;
4832 use util::test::sample_text;
4833
4834 #[gpui::test]
4835 fn test_undo_redo_with_selection_restoration(cx: &mut MutableAppContext) {
4836 let mut now = Instant::now();
4837 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
4838 let group_interval = buffer.read(cx).transaction_group_interval();
4839 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
4840 let settings = EditorSettings::test(cx);
4841 let (_, editor) = cx.add_window(Default::default(), |cx| {
4842 build_editor(buffer.clone(), settings, cx)
4843 });
4844
4845 editor.update(cx, |editor, cx| {
4846 editor.start_transaction_at(now, cx);
4847 editor.select_ranges([2..4], None, cx);
4848 editor.insert("cd", cx);
4849 editor.end_transaction_at(now, cx);
4850 assert_eq!(editor.text(cx), "12cd56");
4851 assert_eq!(editor.selected_ranges(cx), vec![4..4]);
4852
4853 editor.start_transaction_at(now, cx);
4854 editor.select_ranges([4..5], None, cx);
4855 editor.insert("e", cx);
4856 editor.end_transaction_at(now, cx);
4857 assert_eq!(editor.text(cx), "12cde6");
4858 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
4859
4860 now += group_interval + Duration::from_millis(1);
4861 editor.select_ranges([2..2], None, cx);
4862
4863 // Simulate an edit in another editor
4864 buffer.update(cx, |buffer, cx| {
4865 buffer.start_transaction_at(now, cx);
4866 buffer.edit([0..1], "a", cx);
4867 buffer.edit([1..1], "b", cx);
4868 buffer.end_transaction_at(now, cx);
4869 });
4870
4871 assert_eq!(editor.text(cx), "ab2cde6");
4872 assert_eq!(editor.selected_ranges(cx), vec![3..3]);
4873
4874 // Last transaction happened past the group interval in a different editor.
4875 // Undo it individually and don't restore selections.
4876 editor.undo(&Undo, cx);
4877 assert_eq!(editor.text(cx), "12cde6");
4878 assert_eq!(editor.selected_ranges(cx), vec![2..2]);
4879
4880 // First two transactions happened within the group interval in this editor.
4881 // Undo them together and restore selections.
4882 editor.undo(&Undo, cx);
4883 editor.undo(&Undo, cx); // Undo stack is empty here, so this is a no-op.
4884 assert_eq!(editor.text(cx), "123456");
4885 assert_eq!(editor.selected_ranges(cx), vec![0..0]);
4886
4887 // Redo the first two transactions together.
4888 editor.redo(&Redo, cx);
4889 assert_eq!(editor.text(cx), "12cde6");
4890 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
4891
4892 // Redo the last transaction on its own.
4893 editor.redo(&Redo, cx);
4894 assert_eq!(editor.text(cx), "ab2cde6");
4895 assert_eq!(editor.selected_ranges(cx), vec![6..6]);
4896
4897 // Test empty transactions.
4898 editor.start_transaction_at(now, cx);
4899 editor.end_transaction_at(now, cx);
4900 editor.undo(&Undo, cx);
4901 assert_eq!(editor.text(cx), "12cde6");
4902 });
4903 }
4904
4905 #[gpui::test]
4906 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
4907 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
4908 let settings = EditorSettings::test(cx);
4909 let (_, editor) =
4910 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4911
4912 editor.update(cx, |view, cx| {
4913 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
4914 });
4915
4916 assert_eq!(
4917 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4918 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
4919 );
4920
4921 editor.update(cx, |view, cx| {
4922 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
4923 });
4924
4925 assert_eq!(
4926 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4927 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
4928 );
4929
4930 editor.update(cx, |view, cx| {
4931 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
4932 });
4933
4934 assert_eq!(
4935 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4936 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
4937 );
4938
4939 editor.update(cx, |view, cx| {
4940 view.end_selection(cx);
4941 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
4942 });
4943
4944 assert_eq!(
4945 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4946 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
4947 );
4948
4949 editor.update(cx, |view, cx| {
4950 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
4951 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
4952 });
4953
4954 assert_eq!(
4955 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4956 [
4957 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
4958 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
4959 ]
4960 );
4961
4962 editor.update(cx, |view, cx| {
4963 view.end_selection(cx);
4964 });
4965
4966 assert_eq!(
4967 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4968 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
4969 );
4970 }
4971
4972 #[gpui::test]
4973 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
4974 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
4975 let settings = EditorSettings::test(cx);
4976 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4977
4978 view.update(cx, |view, cx| {
4979 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
4980 assert_eq!(
4981 view.selected_display_ranges(cx),
4982 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
4983 );
4984 });
4985
4986 view.update(cx, |view, cx| {
4987 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
4988 assert_eq!(
4989 view.selected_display_ranges(cx),
4990 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
4991 );
4992 });
4993
4994 view.update(cx, |view, cx| {
4995 view.cancel(&Cancel, cx);
4996 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
4997 assert_eq!(
4998 view.selected_display_ranges(cx),
4999 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
5000 );
5001 });
5002 }
5003
5004 #[gpui::test]
5005 fn test_navigation_history(cx: &mut gpui::MutableAppContext) {
5006 cx.add_window(Default::default(), |cx| {
5007 use workspace::ItemView;
5008 let nav_history = Rc::new(RefCell::new(workspace::NavHistory::default()));
5009 let settings = EditorSettings::test(&cx);
5010 let buffer = MultiBuffer::build_simple(&sample_text(30, 5, 'a'), cx);
5011 let mut editor = build_editor(buffer.clone(), settings, cx);
5012 editor.nav_history = Some(ItemNavHistory::new(nav_history.clone(), &cx.handle()));
5013
5014 // Move the cursor a small distance.
5015 // Nothing is added to the navigation history.
5016 editor.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
5017 editor.select_display_ranges(&[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)], cx);
5018 assert!(nav_history.borrow_mut().pop_backward().is_none());
5019
5020 // Move the cursor a large distance.
5021 // The history can jump back to the previous position.
5022 editor.select_display_ranges(&[DisplayPoint::new(13, 0)..DisplayPoint::new(13, 3)], cx);
5023 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
5024 editor.navigate(nav_entry.data.unwrap(), cx);
5025 assert_eq!(nav_entry.item_view.id(), cx.view_id());
5026 assert_eq!(
5027 editor.selected_display_ranges(cx),
5028 &[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)]
5029 );
5030
5031 // Move the cursor a small distance via the mouse.
5032 // Nothing is added to the navigation history.
5033 editor.begin_selection(DisplayPoint::new(5, 0), false, 1, cx);
5034 editor.end_selection(cx);
5035 assert_eq!(
5036 editor.selected_display_ranges(cx),
5037 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
5038 );
5039 assert!(nav_history.borrow_mut().pop_backward().is_none());
5040
5041 // Move the cursor a large distance via the mouse.
5042 // The history can jump back to the previous position.
5043 editor.begin_selection(DisplayPoint::new(15, 0), false, 1, cx);
5044 editor.end_selection(cx);
5045 assert_eq!(
5046 editor.selected_display_ranges(cx),
5047 &[DisplayPoint::new(15, 0)..DisplayPoint::new(15, 0)]
5048 );
5049 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
5050 editor.navigate(nav_entry.data.unwrap(), cx);
5051 assert_eq!(nav_entry.item_view.id(), cx.view_id());
5052 assert_eq!(
5053 editor.selected_display_ranges(cx),
5054 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
5055 );
5056
5057 editor
5058 });
5059 }
5060
5061 #[gpui::test]
5062 fn test_cancel(cx: &mut gpui::MutableAppContext) {
5063 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
5064 let settings = EditorSettings::test(cx);
5065 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5066
5067 view.update(cx, |view, cx| {
5068 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
5069 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
5070 view.end_selection(cx);
5071
5072 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
5073 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
5074 view.end_selection(cx);
5075 assert_eq!(
5076 view.selected_display_ranges(cx),
5077 [
5078 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5079 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
5080 ]
5081 );
5082 });
5083
5084 view.update(cx, |view, cx| {
5085 view.cancel(&Cancel, cx);
5086 assert_eq!(
5087 view.selected_display_ranges(cx),
5088 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
5089 );
5090 });
5091
5092 view.update(cx, |view, cx| {
5093 view.cancel(&Cancel, cx);
5094 assert_eq!(
5095 view.selected_display_ranges(cx),
5096 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
5097 );
5098 });
5099 }
5100
5101 #[gpui::test]
5102 fn test_fold(cx: &mut gpui::MutableAppContext) {
5103 let buffer = MultiBuffer::build_simple(
5104 &"
5105 impl Foo {
5106 // Hello!
5107
5108 fn a() {
5109 1
5110 }
5111
5112 fn b() {
5113 2
5114 }
5115
5116 fn c() {
5117 3
5118 }
5119 }
5120 "
5121 .unindent(),
5122 cx,
5123 );
5124 let settings = EditorSettings::test(&cx);
5125 let (_, view) = cx.add_window(Default::default(), |cx| {
5126 build_editor(buffer.clone(), settings, cx)
5127 });
5128
5129 view.update(cx, |view, cx| {
5130 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx);
5131 view.fold(&Fold, cx);
5132 assert_eq!(
5133 view.display_text(cx),
5134 "
5135 impl Foo {
5136 // Hello!
5137
5138 fn a() {
5139 1
5140 }
5141
5142 fn b() {…
5143 }
5144
5145 fn c() {…
5146 }
5147 }
5148 "
5149 .unindent(),
5150 );
5151
5152 view.fold(&Fold, cx);
5153 assert_eq!(
5154 view.display_text(cx),
5155 "
5156 impl Foo {…
5157 }
5158 "
5159 .unindent(),
5160 );
5161
5162 view.unfold(&Unfold, cx);
5163 assert_eq!(
5164 view.display_text(cx),
5165 "
5166 impl Foo {
5167 // Hello!
5168
5169 fn a() {
5170 1
5171 }
5172
5173 fn b() {…
5174 }
5175
5176 fn c() {…
5177 }
5178 }
5179 "
5180 .unindent(),
5181 );
5182
5183 view.unfold(&Unfold, cx);
5184 assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text());
5185 });
5186 }
5187
5188 #[gpui::test]
5189 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
5190 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
5191 let settings = EditorSettings::test(&cx);
5192 let (_, view) = cx.add_window(Default::default(), |cx| {
5193 build_editor(buffer.clone(), settings, cx)
5194 });
5195
5196 buffer.update(cx, |buffer, cx| {
5197 buffer.edit(
5198 vec![
5199 Point::new(1, 0)..Point::new(1, 0),
5200 Point::new(1, 1)..Point::new(1, 1),
5201 ],
5202 "\t",
5203 cx,
5204 );
5205 });
5206
5207 view.update(cx, |view, cx| {
5208 assert_eq!(
5209 view.selected_display_ranges(cx),
5210 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
5211 );
5212
5213 view.move_down(&MoveDown, cx);
5214 assert_eq!(
5215 view.selected_display_ranges(cx),
5216 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
5217 );
5218
5219 view.move_right(&MoveRight, cx);
5220 assert_eq!(
5221 view.selected_display_ranges(cx),
5222 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
5223 );
5224
5225 view.move_left(&MoveLeft, cx);
5226 assert_eq!(
5227 view.selected_display_ranges(cx),
5228 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
5229 );
5230
5231 view.move_up(&MoveUp, cx);
5232 assert_eq!(
5233 view.selected_display_ranges(cx),
5234 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
5235 );
5236
5237 view.move_to_end(&MoveToEnd, cx);
5238 assert_eq!(
5239 view.selected_display_ranges(cx),
5240 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
5241 );
5242
5243 view.move_to_beginning(&MoveToBeginning, cx);
5244 assert_eq!(
5245 view.selected_display_ranges(cx),
5246 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
5247 );
5248
5249 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx);
5250 view.select_to_beginning(&SelectToBeginning, cx);
5251 assert_eq!(
5252 view.selected_display_ranges(cx),
5253 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
5254 );
5255
5256 view.select_to_end(&SelectToEnd, cx);
5257 assert_eq!(
5258 view.selected_display_ranges(cx),
5259 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
5260 );
5261 });
5262 }
5263
5264 #[gpui::test]
5265 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
5266 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
5267 let settings = EditorSettings::test(&cx);
5268 let (_, view) = cx.add_window(Default::default(), |cx| {
5269 build_editor(buffer.clone(), settings, cx)
5270 });
5271
5272 assert_eq!('ⓐ'.len_utf8(), 3);
5273 assert_eq!('α'.len_utf8(), 2);
5274
5275 view.update(cx, |view, cx| {
5276 view.fold_ranges(
5277 vec![
5278 Point::new(0, 6)..Point::new(0, 12),
5279 Point::new(1, 2)..Point::new(1, 4),
5280 Point::new(2, 4)..Point::new(2, 8),
5281 ],
5282 cx,
5283 );
5284 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
5285
5286 view.move_right(&MoveRight, cx);
5287 assert_eq!(
5288 view.selected_display_ranges(cx),
5289 &[empty_range(0, "ⓐ".len())]
5290 );
5291 view.move_right(&MoveRight, cx);
5292 assert_eq!(
5293 view.selected_display_ranges(cx),
5294 &[empty_range(0, "ⓐⓑ".len())]
5295 );
5296 view.move_right(&MoveRight, cx);
5297 assert_eq!(
5298 view.selected_display_ranges(cx),
5299 &[empty_range(0, "ⓐⓑ…".len())]
5300 );
5301
5302 view.move_down(&MoveDown, cx);
5303 assert_eq!(
5304 view.selected_display_ranges(cx),
5305 &[empty_range(1, "ab…".len())]
5306 );
5307 view.move_left(&MoveLeft, cx);
5308 assert_eq!(
5309 view.selected_display_ranges(cx),
5310 &[empty_range(1, "ab".len())]
5311 );
5312 view.move_left(&MoveLeft, cx);
5313 assert_eq!(
5314 view.selected_display_ranges(cx),
5315 &[empty_range(1, "a".len())]
5316 );
5317
5318 view.move_down(&MoveDown, cx);
5319 assert_eq!(
5320 view.selected_display_ranges(cx),
5321 &[empty_range(2, "α".len())]
5322 );
5323 view.move_right(&MoveRight, cx);
5324 assert_eq!(
5325 view.selected_display_ranges(cx),
5326 &[empty_range(2, "αβ".len())]
5327 );
5328 view.move_right(&MoveRight, cx);
5329 assert_eq!(
5330 view.selected_display_ranges(cx),
5331 &[empty_range(2, "αβ…".len())]
5332 );
5333 view.move_right(&MoveRight, cx);
5334 assert_eq!(
5335 view.selected_display_ranges(cx),
5336 &[empty_range(2, "αβ…ε".len())]
5337 );
5338
5339 view.move_up(&MoveUp, cx);
5340 assert_eq!(
5341 view.selected_display_ranges(cx),
5342 &[empty_range(1, "ab…e".len())]
5343 );
5344 view.move_up(&MoveUp, cx);
5345 assert_eq!(
5346 view.selected_display_ranges(cx),
5347 &[empty_range(0, "ⓐⓑ…ⓔ".len())]
5348 );
5349 view.move_left(&MoveLeft, cx);
5350 assert_eq!(
5351 view.selected_display_ranges(cx),
5352 &[empty_range(0, "ⓐⓑ…".len())]
5353 );
5354 view.move_left(&MoveLeft, cx);
5355 assert_eq!(
5356 view.selected_display_ranges(cx),
5357 &[empty_range(0, "ⓐⓑ".len())]
5358 );
5359 view.move_left(&MoveLeft, cx);
5360 assert_eq!(
5361 view.selected_display_ranges(cx),
5362 &[empty_range(0, "ⓐ".len())]
5363 );
5364 });
5365 }
5366
5367 #[gpui::test]
5368 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
5369 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
5370 let settings = EditorSettings::test(&cx);
5371 let (_, view) = cx.add_window(Default::default(), |cx| {
5372 build_editor(buffer.clone(), settings, cx)
5373 });
5374 view.update(cx, |view, cx| {
5375 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx);
5376 view.move_down(&MoveDown, cx);
5377 assert_eq!(
5378 view.selected_display_ranges(cx),
5379 &[empty_range(1, "abcd".len())]
5380 );
5381
5382 view.move_down(&MoveDown, cx);
5383 assert_eq!(
5384 view.selected_display_ranges(cx),
5385 &[empty_range(2, "αβγ".len())]
5386 );
5387
5388 view.move_down(&MoveDown, cx);
5389 assert_eq!(
5390 view.selected_display_ranges(cx),
5391 &[empty_range(3, "abcd".len())]
5392 );
5393
5394 view.move_down(&MoveDown, cx);
5395 assert_eq!(
5396 view.selected_display_ranges(cx),
5397 &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
5398 );
5399
5400 view.move_up(&MoveUp, cx);
5401 assert_eq!(
5402 view.selected_display_ranges(cx),
5403 &[empty_range(3, "abcd".len())]
5404 );
5405
5406 view.move_up(&MoveUp, cx);
5407 assert_eq!(
5408 view.selected_display_ranges(cx),
5409 &[empty_range(2, "αβγ".len())]
5410 );
5411 });
5412 }
5413
5414 #[gpui::test]
5415 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
5416 let buffer = MultiBuffer::build_simple("abc\n def", cx);
5417 let settings = EditorSettings::test(&cx);
5418 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5419 view.update(cx, |view, cx| {
5420 view.select_display_ranges(
5421 &[
5422 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5423 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
5424 ],
5425 cx,
5426 );
5427 });
5428
5429 view.update(cx, |view, cx| {
5430 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
5431 assert_eq!(
5432 view.selected_display_ranges(cx),
5433 &[
5434 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5435 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5436 ]
5437 );
5438 });
5439
5440 view.update(cx, |view, cx| {
5441 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
5442 assert_eq!(
5443 view.selected_display_ranges(cx),
5444 &[
5445 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5446 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5447 ]
5448 );
5449 });
5450
5451 view.update(cx, |view, cx| {
5452 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
5453 assert_eq!(
5454 view.selected_display_ranges(cx),
5455 &[
5456 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5457 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5458 ]
5459 );
5460 });
5461
5462 view.update(cx, |view, cx| {
5463 view.move_to_end_of_line(&MoveToEndOfLine, cx);
5464 assert_eq!(
5465 view.selected_display_ranges(cx),
5466 &[
5467 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5468 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
5469 ]
5470 );
5471 });
5472
5473 // Moving to the end of line again is a no-op.
5474 view.update(cx, |view, cx| {
5475 view.move_to_end_of_line(&MoveToEndOfLine, cx);
5476 assert_eq!(
5477 view.selected_display_ranges(cx),
5478 &[
5479 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5480 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
5481 ]
5482 );
5483 });
5484
5485 view.update(cx, |view, cx| {
5486 view.move_left(&MoveLeft, cx);
5487 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
5488 assert_eq!(
5489 view.selected_display_ranges(cx),
5490 &[
5491 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
5492 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
5493 ]
5494 );
5495 });
5496
5497 view.update(cx, |view, cx| {
5498 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
5499 assert_eq!(
5500 view.selected_display_ranges(cx),
5501 &[
5502 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
5503 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
5504 ]
5505 );
5506 });
5507
5508 view.update(cx, |view, cx| {
5509 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
5510 assert_eq!(
5511 view.selected_display_ranges(cx),
5512 &[
5513 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
5514 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
5515 ]
5516 );
5517 });
5518
5519 view.update(cx, |view, cx| {
5520 view.select_to_end_of_line(&SelectToEndOfLine, cx);
5521 assert_eq!(
5522 view.selected_display_ranges(cx),
5523 &[
5524 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
5525 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
5526 ]
5527 );
5528 });
5529
5530 view.update(cx, |view, cx| {
5531 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
5532 assert_eq!(view.display_text(cx), "ab\n de");
5533 assert_eq!(
5534 view.selected_display_ranges(cx),
5535 &[
5536 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5537 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
5538 ]
5539 );
5540 });
5541
5542 view.update(cx, |view, cx| {
5543 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
5544 assert_eq!(view.display_text(cx), "\n");
5545 assert_eq!(
5546 view.selected_display_ranges(cx),
5547 &[
5548 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5549 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5550 ]
5551 );
5552 });
5553 }
5554
5555 #[gpui::test]
5556 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
5557 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
5558 let settings = EditorSettings::test(&cx);
5559 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5560 view.update(cx, |view, cx| {
5561 view.select_display_ranges(
5562 &[
5563 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
5564 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
5565 ],
5566 cx,
5567 );
5568 });
5569
5570 view.update(cx, |view, cx| {
5571 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5572 assert_eq!(
5573 view.selected_display_ranges(cx),
5574 &[
5575 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
5576 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
5577 ]
5578 );
5579 });
5580
5581 view.update(cx, |view, cx| {
5582 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5583 assert_eq!(
5584 view.selected_display_ranges(cx),
5585 &[
5586 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
5587 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2),
5588 ]
5589 );
5590 });
5591
5592 view.update(cx, |view, cx| {
5593 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5594 assert_eq!(
5595 view.selected_display_ranges(cx),
5596 &[
5597 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
5598 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
5599 ]
5600 );
5601 });
5602
5603 view.update(cx, |view, cx| {
5604 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5605 assert_eq!(
5606 view.selected_display_ranges(cx),
5607 &[
5608 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5609 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5610 ]
5611 );
5612 });
5613
5614 view.update(cx, |view, cx| {
5615 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5616 assert_eq!(
5617 view.selected_display_ranges(cx),
5618 &[
5619 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5620 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 23),
5621 ]
5622 );
5623 });
5624
5625 view.update(cx, |view, cx| {
5626 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5627 assert_eq!(
5628 view.selected_display_ranges(cx),
5629 &[
5630 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5631 DisplayPoint::new(0, 24)..DisplayPoint::new(0, 24),
5632 ]
5633 );
5634 });
5635
5636 view.update(cx, |view, cx| {
5637 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5638 assert_eq!(
5639 view.selected_display_ranges(cx),
5640 &[
5641 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
5642 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5643 ]
5644 );
5645 });
5646
5647 view.update(cx, |view, cx| {
5648 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5649 assert_eq!(
5650 view.selected_display_ranges(cx),
5651 &[
5652 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
5653 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
5654 ]
5655 );
5656 });
5657
5658 view.update(cx, |view, cx| {
5659 view.move_right(&MoveRight, cx);
5660 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
5661 assert_eq!(
5662 view.selected_display_ranges(cx),
5663 &[
5664 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
5665 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
5666 ]
5667 );
5668 });
5669
5670 view.update(cx, |view, cx| {
5671 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
5672 assert_eq!(
5673 view.selected_display_ranges(cx),
5674 &[
5675 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 7),
5676 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 2),
5677 ]
5678 );
5679 });
5680
5681 view.update(cx, |view, cx| {
5682 view.select_to_next_word_boundary(&SelectToNextWordBoundary, cx);
5683 assert_eq!(
5684 view.selected_display_ranges(cx),
5685 &[
5686 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
5687 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
5688 ]
5689 );
5690 });
5691 }
5692
5693 #[gpui::test]
5694 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
5695 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
5696 let settings = EditorSettings::test(&cx);
5697 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5698
5699 view.update(cx, |view, cx| {
5700 view.set_wrap_width(Some(140.), cx);
5701 assert_eq!(
5702 view.display_text(cx),
5703 "use one::{\n two::three::\n four::five\n};"
5704 );
5705
5706 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx);
5707
5708 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5709 assert_eq!(
5710 view.selected_display_ranges(cx),
5711 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
5712 );
5713
5714 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5715 assert_eq!(
5716 view.selected_display_ranges(cx),
5717 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
5718 );
5719
5720 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5721 assert_eq!(
5722 view.selected_display_ranges(cx),
5723 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
5724 );
5725
5726 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5727 assert_eq!(
5728 view.selected_display_ranges(cx),
5729 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
5730 );
5731
5732 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5733 assert_eq!(
5734 view.selected_display_ranges(cx),
5735 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
5736 );
5737
5738 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5739 assert_eq!(
5740 view.selected_display_ranges(cx),
5741 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
5742 );
5743 });
5744 }
5745
5746 #[gpui::test]
5747 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
5748 let buffer = MultiBuffer::build_simple("one two three four", cx);
5749 let settings = EditorSettings::test(&cx);
5750 let (_, view) = cx.add_window(Default::default(), |cx| {
5751 build_editor(buffer.clone(), settings, cx)
5752 });
5753
5754 view.update(cx, |view, cx| {
5755 view.select_display_ranges(
5756 &[
5757 // an empty selection - the preceding word fragment is deleted
5758 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5759 // characters selected - they are deleted
5760 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
5761 ],
5762 cx,
5763 );
5764 view.delete_to_previous_word_boundary(&DeleteToPreviousWordBoundary, cx);
5765 });
5766
5767 assert_eq!(buffer.read(cx).read(cx).text(), "e two te four");
5768
5769 view.update(cx, |view, cx| {
5770 view.select_display_ranges(
5771 &[
5772 // an empty selection - the following word fragment is deleted
5773 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5774 // characters selected - they are deleted
5775 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
5776 ],
5777 cx,
5778 );
5779 view.delete_to_next_word_boundary(&DeleteToNextWordBoundary, cx);
5780 });
5781
5782 assert_eq!(buffer.read(cx).read(cx).text(), "e t te our");
5783 }
5784
5785 #[gpui::test]
5786 fn test_newline(cx: &mut gpui::MutableAppContext) {
5787 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
5788 let settings = EditorSettings::test(&cx);
5789 let (_, view) = cx.add_window(Default::default(), |cx| {
5790 build_editor(buffer.clone(), settings, cx)
5791 });
5792
5793 view.update(cx, |view, cx| {
5794 view.select_display_ranges(
5795 &[
5796 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5797 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5798 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
5799 ],
5800 cx,
5801 );
5802
5803 view.newline(&Newline, cx);
5804 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
5805 });
5806 }
5807
5808 #[gpui::test]
5809 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
5810 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
5811 let settings = EditorSettings::test(&cx);
5812 let (_, view) = cx.add_window(Default::default(), |cx| {
5813 build_editor(buffer.clone(), settings, cx)
5814 });
5815
5816 view.update(cx, |view, cx| {
5817 // two selections on the same line
5818 view.select_display_ranges(
5819 &[
5820 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
5821 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
5822 ],
5823 cx,
5824 );
5825
5826 // indent from mid-tabstop to full tabstop
5827 view.tab(&Tab, cx);
5828 assert_eq!(view.text(cx), " one two\nthree\n four");
5829 assert_eq!(
5830 view.selected_display_ranges(cx),
5831 &[
5832 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
5833 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
5834 ]
5835 );
5836
5837 // outdent from 1 tabstop to 0 tabstops
5838 view.outdent(&Outdent, cx);
5839 assert_eq!(view.text(cx), "one two\nthree\n four");
5840 assert_eq!(
5841 view.selected_display_ranges(cx),
5842 &[
5843 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
5844 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
5845 ]
5846 );
5847
5848 // select across line ending
5849 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx);
5850
5851 // indent and outdent affect only the preceding line
5852 view.tab(&Tab, cx);
5853 assert_eq!(view.text(cx), "one two\n three\n four");
5854 assert_eq!(
5855 view.selected_display_ranges(cx),
5856 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
5857 );
5858 view.outdent(&Outdent, cx);
5859 assert_eq!(view.text(cx), "one two\nthree\n four");
5860 assert_eq!(
5861 view.selected_display_ranges(cx),
5862 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
5863 );
5864
5865 // Ensure that indenting/outdenting works when the cursor is at column 0.
5866 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
5867 view.tab(&Tab, cx);
5868 assert_eq!(view.text(cx), "one two\n three\n four");
5869 assert_eq!(
5870 view.selected_display_ranges(cx),
5871 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
5872 );
5873
5874 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
5875 view.outdent(&Outdent, cx);
5876 assert_eq!(view.text(cx), "one two\nthree\n four");
5877 assert_eq!(
5878 view.selected_display_ranges(cx),
5879 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
5880 );
5881 });
5882 }
5883
5884 #[gpui::test]
5885 fn test_backspace(cx: &mut gpui::MutableAppContext) {
5886 let buffer =
5887 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
5888 let settings = EditorSettings::test(&cx);
5889 let (_, view) = cx.add_window(Default::default(), |cx| {
5890 build_editor(buffer.clone(), settings, cx)
5891 });
5892
5893 view.update(cx, |view, cx| {
5894 view.select_display_ranges(
5895 &[
5896 // an empty selection - the preceding character is deleted
5897 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5898 // one character selected - it is deleted
5899 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
5900 // a line suffix selected - it is deleted
5901 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
5902 ],
5903 cx,
5904 );
5905 view.backspace(&Backspace, cx);
5906 });
5907
5908 assert_eq!(
5909 buffer.read(cx).read(cx).text(),
5910 "oe two three\nfou five six\nseven ten\n"
5911 );
5912 }
5913
5914 #[gpui::test]
5915 fn test_delete(cx: &mut gpui::MutableAppContext) {
5916 let buffer =
5917 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
5918 let settings = EditorSettings::test(&cx);
5919 let (_, view) = cx.add_window(Default::default(), |cx| {
5920 build_editor(buffer.clone(), settings, cx)
5921 });
5922
5923 view.update(cx, |view, cx| {
5924 view.select_display_ranges(
5925 &[
5926 // an empty selection - the following character is deleted
5927 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5928 // one character selected - it is deleted
5929 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
5930 // a line suffix selected - it is deleted
5931 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
5932 ],
5933 cx,
5934 );
5935 view.delete(&Delete, cx);
5936 });
5937
5938 assert_eq!(
5939 buffer.read(cx).read(cx).text(),
5940 "on two three\nfou five six\nseven ten\n"
5941 );
5942 }
5943
5944 #[gpui::test]
5945 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
5946 let settings = EditorSettings::test(&cx);
5947 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
5948 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5949 view.update(cx, |view, cx| {
5950 view.select_display_ranges(
5951 &[
5952 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5953 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
5954 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5955 ],
5956 cx,
5957 );
5958 view.delete_line(&DeleteLine, cx);
5959 assert_eq!(view.display_text(cx), "ghi");
5960 assert_eq!(
5961 view.selected_display_ranges(cx),
5962 vec![
5963 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5964 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
5965 ]
5966 );
5967 });
5968
5969 let settings = EditorSettings::test(&cx);
5970 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
5971 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5972 view.update(cx, |view, cx| {
5973 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx);
5974 view.delete_line(&DeleteLine, cx);
5975 assert_eq!(view.display_text(cx), "ghi\n");
5976 assert_eq!(
5977 view.selected_display_ranges(cx),
5978 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
5979 );
5980 });
5981 }
5982
5983 #[gpui::test]
5984 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
5985 let settings = EditorSettings::test(&cx);
5986 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
5987 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5988 view.update(cx, |view, cx| {
5989 view.select_display_ranges(
5990 &[
5991 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
5992 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5993 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5994 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5995 ],
5996 cx,
5997 );
5998 view.duplicate_line(&DuplicateLine, cx);
5999 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
6000 assert_eq!(
6001 view.selected_display_ranges(cx),
6002 vec![
6003 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
6004 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6005 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6006 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
6007 ]
6008 );
6009 });
6010
6011 let settings = EditorSettings::test(&cx);
6012 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
6013 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6014 view.update(cx, |view, cx| {
6015 view.select_display_ranges(
6016 &[
6017 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
6018 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
6019 ],
6020 cx,
6021 );
6022 view.duplicate_line(&DuplicateLine, cx);
6023 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
6024 assert_eq!(
6025 view.selected_display_ranges(cx),
6026 vec![
6027 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
6028 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
6029 ]
6030 );
6031 });
6032 }
6033
6034 #[gpui::test]
6035 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
6036 let settings = EditorSettings::test(&cx);
6037 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
6038 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6039 view.update(cx, |view, cx| {
6040 view.fold_ranges(
6041 vec![
6042 Point::new(0, 2)..Point::new(1, 2),
6043 Point::new(2, 3)..Point::new(4, 1),
6044 Point::new(7, 0)..Point::new(8, 4),
6045 ],
6046 cx,
6047 );
6048 view.select_display_ranges(
6049 &[
6050 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6051 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
6052 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
6053 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
6054 ],
6055 cx,
6056 );
6057 assert_eq!(
6058 view.display_text(cx),
6059 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
6060 );
6061
6062 view.move_line_up(&MoveLineUp, cx);
6063 assert_eq!(
6064 view.display_text(cx),
6065 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
6066 );
6067 assert_eq!(
6068 view.selected_display_ranges(cx),
6069 vec![
6070 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6071 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6072 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
6073 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
6074 ]
6075 );
6076 });
6077
6078 view.update(cx, |view, cx| {
6079 view.move_line_down(&MoveLineDown, cx);
6080 assert_eq!(
6081 view.display_text(cx),
6082 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
6083 );
6084 assert_eq!(
6085 view.selected_display_ranges(cx),
6086 vec![
6087 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6088 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
6089 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
6090 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
6091 ]
6092 );
6093 });
6094
6095 view.update(cx, |view, cx| {
6096 view.move_line_down(&MoveLineDown, cx);
6097 assert_eq!(
6098 view.display_text(cx),
6099 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
6100 );
6101 assert_eq!(
6102 view.selected_display_ranges(cx),
6103 vec![
6104 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6105 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
6106 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
6107 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
6108 ]
6109 );
6110 });
6111
6112 view.update(cx, |view, cx| {
6113 view.move_line_up(&MoveLineUp, cx);
6114 assert_eq!(
6115 view.display_text(cx),
6116 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
6117 );
6118 assert_eq!(
6119 view.selected_display_ranges(cx),
6120 vec![
6121 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6122 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6123 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
6124 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
6125 ]
6126 );
6127 });
6128 }
6129
6130 #[gpui::test]
6131 fn test_move_line_up_down_with_blocks(cx: &mut gpui::MutableAppContext) {
6132 let settings = EditorSettings::test(&cx);
6133 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
6134 let snapshot = buffer.read(cx).snapshot(cx);
6135 let (_, editor) =
6136 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6137 editor.update(cx, |editor, cx| {
6138 editor.insert_blocks(
6139 [BlockProperties {
6140 position: snapshot.anchor_after(Point::new(2, 0)),
6141 disposition: BlockDisposition::Below,
6142 height: 1,
6143 render: Arc::new(|_| Empty::new().boxed()),
6144 }],
6145 cx,
6146 );
6147 editor.select_ranges([Point::new(2, 0)..Point::new(2, 0)], None, cx);
6148 editor.move_line_down(&MoveLineDown, cx);
6149 });
6150 }
6151
6152 #[gpui::test]
6153 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
6154 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
6155 let settings = EditorSettings::test(&cx);
6156 let view = cx
6157 .add_window(Default::default(), |cx| {
6158 build_editor(buffer.clone(), settings, cx)
6159 })
6160 .1;
6161
6162 // Cut with three selections. Clipboard text is divided into three slices.
6163 view.update(cx, |view, cx| {
6164 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
6165 view.cut(&Cut, cx);
6166 assert_eq!(view.display_text(cx), "two four six ");
6167 });
6168
6169 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
6170 view.update(cx, |view, cx| {
6171 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
6172 view.paste(&Paste, cx);
6173 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
6174 assert_eq!(
6175 view.selected_display_ranges(cx),
6176 &[
6177 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
6178 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
6179 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
6180 ]
6181 );
6182 });
6183
6184 // Paste again but with only two cursors. Since the number of cursors doesn't
6185 // match the number of slices in the clipboard, the entire clipboard text
6186 // is pasted at each cursor.
6187 view.update(cx, |view, cx| {
6188 view.select_ranges(vec![0..0, 31..31], None, cx);
6189 view.handle_input(&Input("( ".into()), cx);
6190 view.paste(&Paste, cx);
6191 view.handle_input(&Input(") ".into()), cx);
6192 assert_eq!(
6193 view.display_text(cx),
6194 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
6195 );
6196 });
6197
6198 view.update(cx, |view, cx| {
6199 view.select_ranges(vec![0..0], None, cx);
6200 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
6201 assert_eq!(
6202 view.display_text(cx),
6203 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
6204 );
6205 });
6206
6207 // Cut with three selections, one of which is full-line.
6208 view.update(cx, |view, cx| {
6209 view.select_display_ranges(
6210 &[
6211 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
6212 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6213 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
6214 ],
6215 cx,
6216 );
6217 view.cut(&Cut, cx);
6218 assert_eq!(
6219 view.display_text(cx),
6220 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
6221 );
6222 });
6223
6224 // Paste with three selections, noticing how the copied selection that was full-line
6225 // gets inserted before the second cursor.
6226 view.update(cx, |view, cx| {
6227 view.select_display_ranges(
6228 &[
6229 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6230 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6231 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
6232 ],
6233 cx,
6234 );
6235 view.paste(&Paste, cx);
6236 assert_eq!(
6237 view.display_text(cx),
6238 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
6239 );
6240 assert_eq!(
6241 view.selected_display_ranges(cx),
6242 &[
6243 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6244 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6245 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
6246 ]
6247 );
6248 });
6249
6250 // Copy with a single cursor only, which writes the whole line into the clipboard.
6251 view.update(cx, |view, cx| {
6252 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx);
6253 view.copy(&Copy, cx);
6254 });
6255
6256 // Paste with three selections, noticing how the copied full-line selection is inserted
6257 // before the empty selections but replaces the selection that is non-empty.
6258 view.update(cx, |view, cx| {
6259 view.select_display_ranges(
6260 &[
6261 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6262 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
6263 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6264 ],
6265 cx,
6266 );
6267 view.paste(&Paste, cx);
6268 assert_eq!(
6269 view.display_text(cx),
6270 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
6271 );
6272 assert_eq!(
6273 view.selected_display_ranges(cx),
6274 &[
6275 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6276 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6277 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
6278 ]
6279 );
6280 });
6281 }
6282
6283 #[gpui::test]
6284 fn test_select_all(cx: &mut gpui::MutableAppContext) {
6285 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
6286 let settings = EditorSettings::test(&cx);
6287 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6288 view.update(cx, |view, cx| {
6289 view.select_all(&SelectAll, cx);
6290 assert_eq!(
6291 view.selected_display_ranges(cx),
6292 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
6293 );
6294 });
6295 }
6296
6297 #[gpui::test]
6298 fn test_select_line(cx: &mut gpui::MutableAppContext) {
6299 let settings = EditorSettings::test(&cx);
6300 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
6301 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6302 view.update(cx, |view, cx| {
6303 view.select_display_ranges(
6304 &[
6305 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
6306 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6307 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6308 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
6309 ],
6310 cx,
6311 );
6312 view.select_line(&SelectLine, cx);
6313 assert_eq!(
6314 view.selected_display_ranges(cx),
6315 vec![
6316 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
6317 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
6318 ]
6319 );
6320 });
6321
6322 view.update(cx, |view, cx| {
6323 view.select_line(&SelectLine, cx);
6324 assert_eq!(
6325 view.selected_display_ranges(cx),
6326 vec![
6327 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
6328 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
6329 ]
6330 );
6331 });
6332
6333 view.update(cx, |view, cx| {
6334 view.select_line(&SelectLine, cx);
6335 assert_eq!(
6336 view.selected_display_ranges(cx),
6337 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
6338 );
6339 });
6340 }
6341
6342 #[gpui::test]
6343 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
6344 let settings = EditorSettings::test(&cx);
6345 let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
6346 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6347 view.update(cx, |view, cx| {
6348 view.fold_ranges(
6349 vec![
6350 Point::new(0, 2)..Point::new(1, 2),
6351 Point::new(2, 3)..Point::new(4, 1),
6352 Point::new(7, 0)..Point::new(8, 4),
6353 ],
6354 cx,
6355 );
6356 view.select_display_ranges(
6357 &[
6358 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
6359 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6360 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6361 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
6362 ],
6363 cx,
6364 );
6365 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
6366 });
6367
6368 view.update(cx, |view, cx| {
6369 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
6370 assert_eq!(
6371 view.display_text(cx),
6372 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
6373 );
6374 assert_eq!(
6375 view.selected_display_ranges(cx),
6376 [
6377 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6378 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6379 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
6380 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
6381 ]
6382 );
6383 });
6384
6385 view.update(cx, |view, cx| {
6386 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx);
6387 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
6388 assert_eq!(
6389 view.display_text(cx),
6390 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
6391 );
6392 assert_eq!(
6393 view.selected_display_ranges(cx),
6394 [
6395 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
6396 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6397 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
6398 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
6399 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
6400 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
6401 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
6402 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
6403 ]
6404 );
6405 });
6406 }
6407
6408 #[gpui::test]
6409 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
6410 let settings = EditorSettings::test(&cx);
6411 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
6412 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6413
6414 view.update(cx, |view, cx| {
6415 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx);
6416 });
6417 view.update(cx, |view, cx| {
6418 view.add_selection_above(&AddSelectionAbove, cx);
6419 assert_eq!(
6420 view.selected_display_ranges(cx),
6421 vec![
6422 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6423 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
6424 ]
6425 );
6426 });
6427
6428 view.update(cx, |view, cx| {
6429 view.add_selection_above(&AddSelectionAbove, cx);
6430 assert_eq!(
6431 view.selected_display_ranges(cx),
6432 vec![
6433 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6434 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
6435 ]
6436 );
6437 });
6438
6439 view.update(cx, |view, cx| {
6440 view.add_selection_below(&AddSelectionBelow, cx);
6441 assert_eq!(
6442 view.selected_display_ranges(cx),
6443 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
6444 );
6445 });
6446
6447 view.update(cx, |view, cx| {
6448 view.add_selection_below(&AddSelectionBelow, cx);
6449 assert_eq!(
6450 view.selected_display_ranges(cx),
6451 vec![
6452 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
6453 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
6454 ]
6455 );
6456 });
6457
6458 view.update(cx, |view, cx| {
6459 view.add_selection_below(&AddSelectionBelow, cx);
6460 assert_eq!(
6461 view.selected_display_ranges(cx),
6462 vec![
6463 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
6464 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
6465 ]
6466 );
6467 });
6468
6469 view.update(cx, |view, cx| {
6470 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx);
6471 });
6472 view.update(cx, |view, cx| {
6473 view.add_selection_below(&AddSelectionBelow, cx);
6474 assert_eq!(
6475 view.selected_display_ranges(cx),
6476 vec![
6477 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
6478 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
6479 ]
6480 );
6481 });
6482
6483 view.update(cx, |view, cx| {
6484 view.add_selection_below(&AddSelectionBelow, cx);
6485 assert_eq!(
6486 view.selected_display_ranges(cx),
6487 vec![
6488 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
6489 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
6490 ]
6491 );
6492 });
6493
6494 view.update(cx, |view, cx| {
6495 view.add_selection_above(&AddSelectionAbove, cx);
6496 assert_eq!(
6497 view.selected_display_ranges(cx),
6498 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
6499 );
6500 });
6501
6502 view.update(cx, |view, cx| {
6503 view.add_selection_above(&AddSelectionAbove, cx);
6504 assert_eq!(
6505 view.selected_display_ranges(cx),
6506 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
6507 );
6508 });
6509
6510 view.update(cx, |view, cx| {
6511 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx);
6512 view.add_selection_below(&AddSelectionBelow, cx);
6513 assert_eq!(
6514 view.selected_display_ranges(cx),
6515 vec![
6516 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
6517 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
6518 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
6519 ]
6520 );
6521 });
6522
6523 view.update(cx, |view, cx| {
6524 view.add_selection_below(&AddSelectionBelow, cx);
6525 assert_eq!(
6526 view.selected_display_ranges(cx),
6527 vec![
6528 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
6529 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
6530 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
6531 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
6532 ]
6533 );
6534 });
6535
6536 view.update(cx, |view, cx| {
6537 view.add_selection_above(&AddSelectionAbove, cx);
6538 assert_eq!(
6539 view.selected_display_ranges(cx),
6540 vec![
6541 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
6542 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
6543 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
6544 ]
6545 );
6546 });
6547
6548 view.update(cx, |view, cx| {
6549 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx);
6550 });
6551 view.update(cx, |view, cx| {
6552 view.add_selection_above(&AddSelectionAbove, cx);
6553 assert_eq!(
6554 view.selected_display_ranges(cx),
6555 vec![
6556 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
6557 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
6558 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
6559 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
6560 ]
6561 );
6562 });
6563
6564 view.update(cx, |view, cx| {
6565 view.add_selection_below(&AddSelectionBelow, cx);
6566 assert_eq!(
6567 view.selected_display_ranges(cx),
6568 vec![
6569 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
6570 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
6571 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
6572 ]
6573 );
6574 });
6575 }
6576
6577 #[gpui::test]
6578 async fn test_select_larger_smaller_syntax_node(mut cx: gpui::TestAppContext) {
6579 let settings = cx.read(EditorSettings::test);
6580 let language = Arc::new(Language::new(
6581 LanguageConfig::default(),
6582 Some(tree_sitter_rust::language()),
6583 ));
6584
6585 let text = r#"
6586 use mod1::mod2::{mod3, mod4};
6587
6588 fn fn_1(param1: bool, param2: &str) {
6589 let var1 = "text";
6590 }
6591 "#
6592 .unindent();
6593
6594 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
6595 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6596 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6597 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
6598 .await;
6599
6600 view.update(&mut cx, |view, cx| {
6601 view.select_display_ranges(
6602 &[
6603 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
6604 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
6605 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
6606 ],
6607 cx,
6608 );
6609 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
6610 });
6611 assert_eq!(
6612 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6613 &[
6614 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
6615 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
6616 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
6617 ]
6618 );
6619
6620 view.update(&mut cx, |view, cx| {
6621 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
6622 });
6623 assert_eq!(
6624 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6625 &[
6626 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
6627 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
6628 ]
6629 );
6630
6631 view.update(&mut cx, |view, cx| {
6632 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
6633 });
6634 assert_eq!(
6635 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6636 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
6637 );
6638
6639 // Trying to expand the selected syntax node one more time has no effect.
6640 view.update(&mut cx, |view, cx| {
6641 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
6642 });
6643 assert_eq!(
6644 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6645 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
6646 );
6647
6648 view.update(&mut cx, |view, cx| {
6649 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
6650 });
6651 assert_eq!(
6652 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6653 &[
6654 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
6655 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
6656 ]
6657 );
6658
6659 view.update(&mut cx, |view, cx| {
6660 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
6661 });
6662 assert_eq!(
6663 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6664 &[
6665 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
6666 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
6667 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
6668 ]
6669 );
6670
6671 view.update(&mut cx, |view, cx| {
6672 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
6673 });
6674 assert_eq!(
6675 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6676 &[
6677 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
6678 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
6679 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
6680 ]
6681 );
6682
6683 // Trying to shrink the selected syntax node one more time has no effect.
6684 view.update(&mut cx, |view, cx| {
6685 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
6686 });
6687 assert_eq!(
6688 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6689 &[
6690 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
6691 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
6692 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
6693 ]
6694 );
6695
6696 // Ensure that we keep expanding the selection if the larger selection starts or ends within
6697 // a fold.
6698 view.update(&mut cx, |view, cx| {
6699 view.fold_ranges(
6700 vec![
6701 Point::new(0, 21)..Point::new(0, 24),
6702 Point::new(3, 20)..Point::new(3, 22),
6703 ],
6704 cx,
6705 );
6706 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
6707 });
6708 assert_eq!(
6709 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6710 &[
6711 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
6712 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
6713 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
6714 ]
6715 );
6716 }
6717
6718 #[gpui::test]
6719 async fn test_autoindent_selections(mut cx: gpui::TestAppContext) {
6720 let settings = cx.read(EditorSettings::test);
6721 let language = Arc::new(
6722 Language::new(
6723 LanguageConfig {
6724 brackets: vec![
6725 BracketPair {
6726 start: "{".to_string(),
6727 end: "}".to_string(),
6728 close: false,
6729 newline: true,
6730 },
6731 BracketPair {
6732 start: "(".to_string(),
6733 end: ")".to_string(),
6734 close: false,
6735 newline: true,
6736 },
6737 ],
6738 ..Default::default()
6739 },
6740 Some(tree_sitter_rust::language()),
6741 )
6742 .with_indents_query(
6743 r#"
6744 (_ "(" ")" @end) @indent
6745 (_ "{" "}" @end) @indent
6746 "#,
6747 )
6748 .unwrap(),
6749 );
6750
6751 let text = "fn a() {}";
6752
6753 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
6754 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6755 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6756 editor
6757 .condition(&cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
6758 .await;
6759
6760 editor.update(&mut cx, |editor, cx| {
6761 editor.select_ranges([5..5, 8..8, 9..9], None, cx);
6762 editor.newline(&Newline, cx);
6763 assert_eq!(editor.text(cx), "fn a(\n \n) {\n \n}\n");
6764 assert_eq!(
6765 editor.selected_ranges(cx),
6766 &[
6767 Point::new(1, 4)..Point::new(1, 4),
6768 Point::new(3, 4)..Point::new(3, 4),
6769 Point::new(5, 0)..Point::new(5, 0)
6770 ]
6771 );
6772 });
6773 }
6774
6775 #[gpui::test]
6776 async fn test_autoclose_pairs(mut cx: gpui::TestAppContext) {
6777 let settings = cx.read(EditorSettings::test);
6778 let language = Arc::new(Language::new(
6779 LanguageConfig {
6780 brackets: vec![
6781 BracketPair {
6782 start: "{".to_string(),
6783 end: "}".to_string(),
6784 close: true,
6785 newline: true,
6786 },
6787 BracketPair {
6788 start: "/*".to_string(),
6789 end: " */".to_string(),
6790 close: true,
6791 newline: true,
6792 },
6793 ],
6794 ..Default::default()
6795 },
6796 Some(tree_sitter_rust::language()),
6797 ));
6798
6799 let text = r#"
6800 a
6801
6802 /
6803
6804 "#
6805 .unindent();
6806
6807 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
6808 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6809 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6810 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
6811 .await;
6812
6813 view.update(&mut cx, |view, cx| {
6814 view.select_display_ranges(
6815 &[
6816 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
6817 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6818 ],
6819 cx,
6820 );
6821 view.handle_input(&Input("{".to_string()), cx);
6822 view.handle_input(&Input("{".to_string()), cx);
6823 view.handle_input(&Input("{".to_string()), cx);
6824 assert_eq!(
6825 view.text(cx),
6826 "
6827 {{{}}}
6828 {{{}}}
6829 /
6830
6831 "
6832 .unindent()
6833 );
6834
6835 view.move_right(&MoveRight, cx);
6836 view.handle_input(&Input("}".to_string()), cx);
6837 view.handle_input(&Input("}".to_string()), cx);
6838 view.handle_input(&Input("}".to_string()), cx);
6839 assert_eq!(
6840 view.text(cx),
6841 "
6842 {{{}}}}
6843 {{{}}}}
6844 /
6845
6846 "
6847 .unindent()
6848 );
6849
6850 view.undo(&Undo, cx);
6851 view.handle_input(&Input("/".to_string()), cx);
6852 view.handle_input(&Input("*".to_string()), cx);
6853 assert_eq!(
6854 view.text(cx),
6855 "
6856 /* */
6857 /* */
6858 /
6859
6860 "
6861 .unindent()
6862 );
6863
6864 view.undo(&Undo, cx);
6865 view.select_display_ranges(
6866 &[
6867 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6868 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6869 ],
6870 cx,
6871 );
6872 view.handle_input(&Input("*".to_string()), cx);
6873 assert_eq!(
6874 view.text(cx),
6875 "
6876 a
6877
6878 /*
6879 *
6880 "
6881 .unindent()
6882 );
6883 });
6884 }
6885
6886 #[gpui::test]
6887 async fn test_snippets(mut cx: gpui::TestAppContext) {
6888 let settings = cx.read(EditorSettings::test);
6889
6890 let text = "a. b";
6891 let buffer = cx.update(|cx| MultiBuffer::build_simple(&text, cx));
6892 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6893
6894 editor.update(&mut cx, |editor, cx| {
6895 editor
6896 .insert_snippet(2..2, "f(${1:one}, ${2:two})$0", cx)
6897 .unwrap();
6898 assert_eq!(editor.text(cx), "a.f(one, two) b");
6899 assert_eq!(editor.selected_ranges::<usize>(cx), &[4..7]);
6900
6901 // Can't move earlier than the first tab stop
6902 assert!(!editor.move_to_prev_snippet_tabstop(cx));
6903
6904 assert!(editor.move_to_next_snippet_tabstop(cx));
6905 assert_eq!(editor.selected_ranges::<usize>(cx), &[9..12]);
6906
6907 assert!(editor.move_to_prev_snippet_tabstop(cx));
6908 assert_eq!(editor.selected_ranges::<usize>(cx), &[4..7]);
6909
6910 assert!(editor.move_to_next_snippet_tabstop(cx));
6911 assert!(editor.move_to_next_snippet_tabstop(cx));
6912 assert_eq!(editor.selected_ranges::<usize>(cx), &[13..13]);
6913
6914 // As soon as the last tab stop is reached, snippet state is gone
6915 assert!(!editor.move_to_prev_snippet_tabstop(cx));
6916 });
6917 }
6918
6919 #[gpui::test]
6920 async fn test_completion(mut cx: gpui::TestAppContext) {
6921 let settings = cx.read(EditorSettings::test);
6922 let (language_server, mut fake) = lsp::LanguageServer::fake_with_capabilities(
6923 lsp::ServerCapabilities {
6924 completion_provider: Some(lsp::CompletionOptions {
6925 trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
6926 ..Default::default()
6927 }),
6928 ..Default::default()
6929 },
6930 cx.background(),
6931 )
6932 .await;
6933
6934 let text = "
6935 one
6936 two
6937 three
6938 "
6939 .unindent();
6940 let buffer = cx.add_model(|cx| {
6941 Buffer::from_file(
6942 0,
6943 text,
6944 Box::new(FakeFile {
6945 path: Arc::from(Path::new("/the/file")),
6946 }),
6947 cx,
6948 )
6949 .with_language_server(language_server, cx)
6950 });
6951 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6952 buffer.next_notification(&cx).await;
6953
6954 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6955
6956 editor.update(&mut cx, |editor, cx| {
6957 editor.select_ranges([3..3], None, cx);
6958 editor.handle_input(&Input(".".to_string()), cx);
6959 });
6960
6961 let (id, params) = fake.receive_request::<lsp::request::Completion>().await;
6962 assert_eq!(
6963 params.text_document_position.text_document.uri,
6964 lsp::Url::from_file_path("/the/file").unwrap()
6965 );
6966 assert_eq!(
6967 params.text_document_position.position,
6968 lsp::Position::new(0, 4)
6969 );
6970
6971 fake.respond(
6972 id,
6973 Some(lsp::CompletionResponse::Array(vec![
6974 lsp::CompletionItem {
6975 text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
6976 range: lsp::Range::new(lsp::Position::new(0, 4), lsp::Position::new(0, 4)),
6977 new_text: "first_completion".to_string(),
6978 })),
6979 ..Default::default()
6980 },
6981 lsp::CompletionItem {
6982 text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
6983 range: lsp::Range::new(lsp::Position::new(0, 4), lsp::Position::new(0, 4)),
6984 new_text: "second_completion".to_string(),
6985 })),
6986 ..Default::default()
6987 },
6988 ])),
6989 )
6990 .await;
6991
6992 editor.next_notification(&cx).await;
6993
6994 let apply_additional_edits = editor.update(&mut cx, |editor, cx| {
6995 editor.move_down(&MoveDown, cx);
6996 let apply_additional_edits = editor.confirm_completion(None, cx).unwrap();
6997 assert_eq!(
6998 editor.text(cx),
6999 "
7000 one.second_completion
7001 two
7002 three
7003 "
7004 .unindent()
7005 );
7006 apply_additional_edits
7007 });
7008
7009 let (id, _) = fake
7010 .receive_request::<lsp::request::ResolveCompletionItem>()
7011 .await;
7012 fake.respond(
7013 id,
7014 lsp::CompletionItem {
7015 additional_text_edits: Some(vec![lsp::TextEdit::new(
7016 lsp::Range::new(lsp::Position::new(2, 5), lsp::Position::new(2, 5)),
7017 "\nadditional edit".to_string(),
7018 )]),
7019 ..Default::default()
7020 },
7021 )
7022 .await;
7023
7024 apply_additional_edits.await.unwrap();
7025 assert_eq!(
7026 editor.read_with(&cx, |editor, cx| editor.text(cx)),
7027 "
7028 one.second_completion
7029 two
7030 three
7031 additional edit
7032 "
7033 .unindent()
7034 );
7035 }
7036
7037 #[gpui::test]
7038 async fn test_toggle_comment(mut cx: gpui::TestAppContext) {
7039 let settings = cx.read(EditorSettings::test);
7040 let language = Arc::new(Language::new(
7041 LanguageConfig {
7042 line_comment: Some("// ".to_string()),
7043 ..Default::default()
7044 },
7045 Some(tree_sitter_rust::language()),
7046 ));
7047
7048 let text = "
7049 fn a() {
7050 //b();
7051 // c();
7052 // d();
7053 }
7054 "
7055 .unindent();
7056
7057 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7058 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7059 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7060
7061 view.update(&mut cx, |editor, cx| {
7062 // If multiple selections intersect a line, the line is only
7063 // toggled once.
7064 editor.select_display_ranges(
7065 &[
7066 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
7067 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
7068 ],
7069 cx,
7070 );
7071 editor.toggle_comments(&ToggleComments, cx);
7072 assert_eq!(
7073 editor.text(cx),
7074 "
7075 fn a() {
7076 b();
7077 c();
7078 d();
7079 }
7080 "
7081 .unindent()
7082 );
7083
7084 // The comment prefix is inserted at the same column for every line
7085 // in a selection.
7086 editor.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx);
7087 editor.toggle_comments(&ToggleComments, cx);
7088 assert_eq!(
7089 editor.text(cx),
7090 "
7091 fn a() {
7092 // b();
7093 // c();
7094 // d();
7095 }
7096 "
7097 .unindent()
7098 );
7099
7100 // If a selection ends at the beginning of a line, that line is not toggled.
7101 editor.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx);
7102 editor.toggle_comments(&ToggleComments, cx);
7103 assert_eq!(
7104 editor.text(cx),
7105 "
7106 fn a() {
7107 // b();
7108 c();
7109 // d();
7110 }
7111 "
7112 .unindent()
7113 );
7114 });
7115 }
7116
7117 #[gpui::test]
7118 fn test_editing_disjoint_excerpts(cx: &mut gpui::MutableAppContext) {
7119 let settings = EditorSettings::test(cx);
7120 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
7121 let multibuffer = cx.add_model(|cx| {
7122 let mut multibuffer = MultiBuffer::new(0);
7123 multibuffer.push_excerpt(
7124 ExcerptProperties {
7125 buffer: &buffer,
7126 range: Point::new(0, 0)..Point::new(0, 4),
7127 },
7128 cx,
7129 );
7130 multibuffer.push_excerpt(
7131 ExcerptProperties {
7132 buffer: &buffer,
7133 range: Point::new(1, 0)..Point::new(1, 4),
7134 },
7135 cx,
7136 );
7137 multibuffer
7138 });
7139
7140 assert_eq!(multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb");
7141
7142 let (_, view) = cx.add_window(Default::default(), |cx| {
7143 build_editor(multibuffer, settings, cx)
7144 });
7145 view.update(cx, |view, cx| {
7146 view.select_display_ranges(
7147 &[
7148 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7149 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7150 ],
7151 cx,
7152 );
7153
7154 view.handle_input(&Input("X".to_string()), cx);
7155 assert_eq!(view.text(cx), "Xaaaa\nXbbbb");
7156 assert_eq!(
7157 view.selected_display_ranges(cx),
7158 &[
7159 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7160 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7161 ]
7162 )
7163 });
7164 }
7165
7166 #[gpui::test]
7167 fn test_editing_overlapping_excerpts(cx: &mut gpui::MutableAppContext) {
7168 let settings = EditorSettings::test(cx);
7169 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
7170 let multibuffer = cx.add_model(|cx| {
7171 let mut multibuffer = MultiBuffer::new(0);
7172 multibuffer.push_excerpt(
7173 ExcerptProperties {
7174 buffer: &buffer,
7175 range: Point::new(0, 0)..Point::new(1, 4),
7176 },
7177 cx,
7178 );
7179 multibuffer.push_excerpt(
7180 ExcerptProperties {
7181 buffer: &buffer,
7182 range: Point::new(1, 0)..Point::new(2, 4),
7183 },
7184 cx,
7185 );
7186 multibuffer
7187 });
7188
7189 assert_eq!(
7190 multibuffer.read(cx).read(cx).text(),
7191 "aaaa\nbbbb\nbbbb\ncccc"
7192 );
7193
7194 let (_, view) = cx.add_window(Default::default(), |cx| {
7195 build_editor(multibuffer, settings, cx)
7196 });
7197 view.update(cx, |view, cx| {
7198 view.select_display_ranges(
7199 &[
7200 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7201 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
7202 ],
7203 cx,
7204 );
7205
7206 view.handle_input(&Input("X".to_string()), cx);
7207 assert_eq!(view.text(cx), "aaaa\nbXbbXb\nbXbbXb\ncccc");
7208 assert_eq!(
7209 view.selected_display_ranges(cx),
7210 &[
7211 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7212 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7213 ]
7214 );
7215
7216 view.newline(&Newline, cx);
7217 assert_eq!(view.text(cx), "aaaa\nbX\nbbX\nb\nbX\nbbX\nb\ncccc");
7218 assert_eq!(
7219 view.selected_display_ranges(cx),
7220 &[
7221 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
7222 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
7223 ]
7224 );
7225 });
7226 }
7227
7228 #[gpui::test]
7229 fn test_refresh_selections(cx: &mut gpui::MutableAppContext) {
7230 let settings = EditorSettings::test(cx);
7231 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
7232 let mut excerpt1_id = None;
7233 let multibuffer = cx.add_model(|cx| {
7234 let mut multibuffer = MultiBuffer::new(0);
7235 excerpt1_id = Some(multibuffer.push_excerpt(
7236 ExcerptProperties {
7237 buffer: &buffer,
7238 range: Point::new(0, 0)..Point::new(1, 4),
7239 },
7240 cx,
7241 ));
7242 multibuffer.push_excerpt(
7243 ExcerptProperties {
7244 buffer: &buffer,
7245 range: Point::new(1, 0)..Point::new(2, 4),
7246 },
7247 cx,
7248 );
7249 multibuffer
7250 });
7251 assert_eq!(
7252 multibuffer.read(cx).read(cx).text(),
7253 "aaaa\nbbbb\nbbbb\ncccc"
7254 );
7255 let (_, editor) = cx.add_window(Default::default(), |cx| {
7256 let mut editor = build_editor(multibuffer.clone(), settings, cx);
7257 editor.select_display_ranges(
7258 &[
7259 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7260 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7261 ],
7262 cx,
7263 );
7264 editor
7265 });
7266
7267 // Refreshing selections is a no-op when excerpts haven't changed.
7268 editor.update(cx, |editor, cx| {
7269 editor.refresh_selections(cx);
7270 assert_eq!(
7271 editor.selected_display_ranges(cx),
7272 [
7273 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7274 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7275 ]
7276 );
7277 });
7278
7279 multibuffer.update(cx, |multibuffer, cx| {
7280 multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx);
7281 });
7282 editor.update(cx, |editor, cx| {
7283 // Removing an excerpt causes the first selection to become degenerate.
7284 assert_eq!(
7285 editor.selected_display_ranges(cx),
7286 [
7287 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7288 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
7289 ]
7290 );
7291
7292 // Refreshing selections will relocate the first selection to the original buffer
7293 // location.
7294 editor.refresh_selections(cx);
7295 assert_eq!(
7296 editor.selected_display_ranges(cx),
7297 [
7298 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7299 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3)
7300 ]
7301 );
7302 });
7303 }
7304
7305 #[gpui::test]
7306 async fn test_extra_newline_insertion(mut cx: gpui::TestAppContext) {
7307 let settings = cx.read(EditorSettings::test);
7308 let language = Arc::new(Language::new(
7309 LanguageConfig {
7310 brackets: vec![
7311 BracketPair {
7312 start: "{".to_string(),
7313 end: "}".to_string(),
7314 close: true,
7315 newline: true,
7316 },
7317 BracketPair {
7318 start: "/* ".to_string(),
7319 end: " */".to_string(),
7320 close: true,
7321 newline: true,
7322 },
7323 ],
7324 ..Default::default()
7325 },
7326 Some(tree_sitter_rust::language()),
7327 ));
7328
7329 let text = concat!(
7330 "{ }\n", // Suppress rustfmt
7331 " x\n", //
7332 " /* */\n", //
7333 "x\n", //
7334 "{{} }\n", //
7335 );
7336
7337 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7338 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7339 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7340 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
7341 .await;
7342
7343 view.update(&mut cx, |view, cx| {
7344 view.select_display_ranges(
7345 &[
7346 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
7347 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7348 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
7349 ],
7350 cx,
7351 );
7352 view.newline(&Newline, cx);
7353
7354 assert_eq!(
7355 view.buffer().read(cx).read(cx).text(),
7356 concat!(
7357 "{ \n", // Suppress rustfmt
7358 "\n", //
7359 "}\n", //
7360 " x\n", //
7361 " /* \n", //
7362 " \n", //
7363 " */\n", //
7364 "x\n", //
7365 "{{} \n", //
7366 "}\n", //
7367 )
7368 );
7369 });
7370 }
7371
7372 #[gpui::test]
7373 fn test_highlighted_ranges(cx: &mut gpui::MutableAppContext) {
7374 let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
7375 let settings = EditorSettings::test(&cx);
7376 let (_, editor) = cx.add_window(Default::default(), |cx| {
7377 build_editor(buffer.clone(), settings, cx)
7378 });
7379
7380 editor.update(cx, |editor, cx| {
7381 struct Type1;
7382 struct Type2;
7383
7384 let buffer = buffer.read(cx).snapshot(cx);
7385
7386 let anchor_range = |range: Range<Point>| {
7387 buffer.anchor_after(range.start)..buffer.anchor_after(range.end)
7388 };
7389
7390 editor.highlight_ranges::<Type1>(
7391 vec![
7392 anchor_range(Point::new(2, 1)..Point::new(2, 3)),
7393 anchor_range(Point::new(4, 2)..Point::new(4, 4)),
7394 anchor_range(Point::new(6, 3)..Point::new(6, 5)),
7395 anchor_range(Point::new(8, 4)..Point::new(8, 6)),
7396 ],
7397 Color::red(),
7398 cx,
7399 );
7400 editor.highlight_ranges::<Type2>(
7401 vec![
7402 anchor_range(Point::new(3, 2)..Point::new(3, 5)),
7403 anchor_range(Point::new(5, 3)..Point::new(5, 6)),
7404 anchor_range(Point::new(7, 4)..Point::new(7, 7)),
7405 anchor_range(Point::new(9, 5)..Point::new(9, 8)),
7406 ],
7407 Color::green(),
7408 cx,
7409 );
7410
7411 let snapshot = editor.snapshot(cx);
7412 let mut highlighted_ranges = editor.highlighted_ranges_in_range(
7413 anchor_range(Point::new(3, 4)..Point::new(7, 4)),
7414 &snapshot,
7415 );
7416 // Enforce a consistent ordering based on color without relying on the ordering of the
7417 // highlight's `TypeId` which is non-deterministic.
7418 highlighted_ranges.sort_unstable_by_key(|(_, color)| *color);
7419 assert_eq!(
7420 highlighted_ranges,
7421 &[
7422 (
7423 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 5),
7424 Color::green(),
7425 ),
7426 (
7427 DisplayPoint::new(5, 3)..DisplayPoint::new(5, 6),
7428 Color::green(),
7429 ),
7430 (
7431 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 4),
7432 Color::red(),
7433 ),
7434 (
7435 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
7436 Color::red(),
7437 ),
7438 ]
7439 );
7440 assert_eq!(
7441 editor.highlighted_ranges_in_range(
7442 anchor_range(Point::new(5, 6)..Point::new(6, 4)),
7443 &snapshot,
7444 ),
7445 &[(
7446 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
7447 Color::red(),
7448 )]
7449 );
7450 });
7451 }
7452
7453 #[test]
7454 fn test_combine_syntax_and_fuzzy_match_highlights() {
7455 let string = "abcdefghijklmnop";
7456 let default = HighlightStyle::default();
7457 let syntax_ranges = [
7458 (
7459 0..3,
7460 HighlightStyle {
7461 color: Color::red(),
7462 ..default
7463 },
7464 ),
7465 (
7466 4..8,
7467 HighlightStyle {
7468 color: Color::green(),
7469 ..default
7470 },
7471 ),
7472 ];
7473 let match_indices = [4, 6, 7, 8];
7474 assert_eq!(
7475 combine_syntax_and_fuzzy_match_highlights(
7476 &string,
7477 default,
7478 syntax_ranges.into_iter(),
7479 &match_indices,
7480 ),
7481 &[
7482 (
7483 0..3,
7484 HighlightStyle {
7485 color: Color::red(),
7486 ..default
7487 },
7488 ),
7489 (
7490 4..5,
7491 HighlightStyle {
7492 color: Color::green(),
7493 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
7494 ..default
7495 },
7496 ),
7497 (
7498 5..6,
7499 HighlightStyle {
7500 color: Color::green(),
7501 ..default
7502 },
7503 ),
7504 (
7505 6..8,
7506 HighlightStyle {
7507 color: Color::green(),
7508 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
7509 ..default
7510 },
7511 ),
7512 (
7513 8..9,
7514 HighlightStyle {
7515 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
7516 ..default
7517 },
7518 ),
7519 ]
7520 );
7521 }
7522
7523 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
7524 let point = DisplayPoint::new(row as u32, column as u32);
7525 point..point
7526 }
7527
7528 fn build_editor(
7529 buffer: ModelHandle<MultiBuffer>,
7530 settings: EditorSettings,
7531 cx: &mut ViewContext<Editor>,
7532 ) -> Editor {
7533 Editor::for_buffer(buffer, Arc::new(move |_| settings.clone()), cx)
7534 }
7535}
7536
7537trait RangeExt<T> {
7538 fn sorted(&self) -> Range<T>;
7539 fn to_inclusive(&self) -> RangeInclusive<T>;
7540}
7541
7542impl<T: Ord + Clone> RangeExt<T> for Range<T> {
7543 fn sorted(&self) -> Self {
7544 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
7545 }
7546
7547 fn to_inclusive(&self) -> RangeInclusive<T> {
7548 self.start.clone()..=self.end.clone()
7549 }
7550}