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, CompletionLabel, Diagnostic,
34 DiagnosticSeverity, Language, 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 let snippet;
1691 let text;
1692 if completion.is_snippet() {
1693 snippet = Some(Snippet::parse(&completion.new_text).log_err()?);
1694 text = snippet.as_ref().unwrap().text.clone();
1695 } else {
1696 snippet = None;
1697 text = completion.new_text.clone();
1698 };
1699 let snapshot = self.buffer.read(cx).snapshot(cx);
1700 let old_range = completion.old_range.to_offset(&snapshot);
1701
1702 let selections = self.local_selections::<usize>(cx);
1703 let mut common_prefix_len = None;
1704 let mut ranges = Vec::new();
1705 for selection in &selections {
1706 let start = selection.start.saturating_sub(old_range.len());
1707 let prefix_len = snapshot
1708 .bytes_at(start)
1709 .zip(completion.new_text.bytes())
1710 .take_while(|(a, b)| a == b)
1711 .count();
1712 if common_prefix_len.is_none() {
1713 common_prefix_len = Some(prefix_len);
1714 }
1715
1716 if common_prefix_len == Some(prefix_len) {
1717 ranges.push(start + prefix_len..selection.end);
1718 } else {
1719 common_prefix_len.take();
1720 ranges.clear();
1721 ranges.extend(selections.iter().map(|s| s.start..s.end));
1722 break;
1723 }
1724 }
1725 let common_prefix_len = common_prefix_len.unwrap_or(0);
1726 let text = &text[common_prefix_len..];
1727
1728 self.start_transaction(cx);
1729 if let Some(mut snippet) = snippet {
1730 snippet.text = text.to_string();
1731 for tabstop in snippet.tabstops.iter_mut().flatten() {
1732 tabstop.start -= common_prefix_len as isize;
1733 tabstop.end -= common_prefix_len as isize;
1734 }
1735
1736 self.insert_snippet(&ranges, snippet, cx).log_err();
1737 } else {
1738 self.buffer.update(cx, |buffer, cx| {
1739 buffer.edit_with_autoindent(ranges, text, cx);
1740 });
1741 }
1742 self.end_transaction(cx);
1743
1744 Some(self.buffer.update(cx, |buffer, cx| {
1745 buffer.apply_additional_edits_for_completion(completion.clone(), cx)
1746 }))
1747 }
1748
1749 pub fn has_completions(&self) -> bool {
1750 self.completion_state
1751 .as_ref()
1752 .map_or(false, |c| !c.matches.is_empty())
1753 }
1754
1755 pub fn render_completions(&self, cx: &AppContext) -> Option<ElementBox> {
1756 enum CompletionTag {}
1757
1758 self.completion_state.as_ref().map(|state| {
1759 let build_settings = self.build_settings.clone();
1760 let settings = build_settings(cx);
1761 let completions = state.completions.clone();
1762 let matches = state.matches.clone();
1763 let selected_item = state.selected_item;
1764 UniformList::new(
1765 state.list.clone(),
1766 matches.len(),
1767 move |range, items, cx| {
1768 let settings = build_settings(cx);
1769 let start_ix = range.start;
1770 for (ix, mat) in matches[range].iter().enumerate() {
1771 let completion = &completions[mat.candidate_id];
1772 let item_ix = start_ix + ix;
1773 items.push(
1774 MouseEventHandler::new::<CompletionTag, _, _, _>(
1775 mat.candidate_id,
1776 cx,
1777 |state, _| {
1778 let item_style = if item_ix == selected_item {
1779 settings.style.autocomplete.selected_item
1780 } else if state.hovered {
1781 settings.style.autocomplete.hovered_item
1782 } else {
1783 settings.style.autocomplete.item
1784 };
1785
1786 Text::new(
1787 completion.label.text.clone(),
1788 settings.style.text.clone(),
1789 )
1790 .with_soft_wrap(false)
1791 .with_highlights(combine_syntax_and_fuzzy_match_highlights(
1792 &completion.label.text,
1793 settings.style.text.color.into(),
1794 styled_runs_for_completion_label(
1795 &completion.label,
1796 settings.style.text.color,
1797 &settings.style.syntax,
1798 ),
1799 &mat.positions,
1800 ))
1801 .contained()
1802 .with_style(item_style)
1803 .boxed()
1804 },
1805 )
1806 .with_cursor_style(CursorStyle::PointingHand)
1807 .on_mouse_down(move |cx| {
1808 cx.dispatch_action(ConfirmCompletion(Some(item_ix)));
1809 })
1810 .boxed(),
1811 );
1812 }
1813 },
1814 )
1815 .with_width_from_item(
1816 state
1817 .matches
1818 .iter()
1819 .enumerate()
1820 .max_by_key(|(_, mat)| {
1821 state.completions[mat.candidate_id]
1822 .label
1823 .text
1824 .chars()
1825 .count()
1826 })
1827 .map(|(ix, _)| ix),
1828 )
1829 .contained()
1830 .with_style(settings.style.autocomplete.container)
1831 .boxed()
1832 })
1833 }
1834
1835 pub fn insert_snippet(
1836 &mut self,
1837 insertion_ranges: &[Range<usize>],
1838 snippet: Snippet,
1839 cx: &mut ViewContext<Self>,
1840 ) -> Result<()> {
1841 let tabstops = self.buffer.update(cx, |buffer, cx| {
1842 buffer.edit_with_autoindent(insertion_ranges.iter().cloned(), &snippet.text, cx);
1843
1844 let snapshot = &*buffer.read(cx);
1845 let snippet = &snippet;
1846 snippet
1847 .tabstops
1848 .iter()
1849 .map(|tabstop| {
1850 tabstop
1851 .iter()
1852 .flat_map(|tabstop_range| {
1853 let mut delta = 0 as isize;
1854 insertion_ranges.iter().map(move |insertion_range| {
1855 let insertion_start = insertion_range.start as isize + delta;
1856 delta +=
1857 snippet.text.len() as isize - insertion_range.len() as isize;
1858
1859 let start = snapshot.anchor_before(
1860 (insertion_start + tabstop_range.start) as usize,
1861 );
1862 let end = snapshot
1863 .anchor_after((insertion_start + tabstop_range.end) as usize);
1864 start..end
1865 })
1866 })
1867 .collect::<Vec<_>>()
1868 })
1869 .collect::<Vec<_>>()
1870 });
1871
1872 if let Some(tabstop) = tabstops.first() {
1873 self.select_ranges(tabstop.iter().cloned(), Some(Autoscroll::Fit), cx);
1874 self.snippet_stack.push(SnippetState {
1875 active_index: 0,
1876 ranges: tabstops,
1877 });
1878 }
1879
1880 Ok(())
1881 }
1882
1883 pub fn move_to_next_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) -> bool {
1884 self.move_to_snippet_tabstop(Bias::Right, cx)
1885 }
1886
1887 pub fn move_to_prev_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) {
1888 self.move_to_snippet_tabstop(Bias::Left, cx);
1889 }
1890
1891 pub fn move_to_snippet_tabstop(&mut self, bias: Bias, cx: &mut ViewContext<Self>) -> bool {
1892 let buffer = self.buffer.read(cx).snapshot(cx);
1893 let old_selections = self.local_selections::<usize>(cx);
1894
1895 if let Some(snippet) = self.snippet_stack.last_mut() {
1896 match bias {
1897 Bias::Left => {
1898 if snippet.active_index > 0 {
1899 snippet.active_index -= 1;
1900 } else {
1901 return false;
1902 }
1903 }
1904 Bias::Right => {
1905 if snippet.active_index + 1 < snippet.ranges.len() {
1906 snippet.active_index += 1;
1907 } else {
1908 return false;
1909 }
1910 }
1911 }
1912 if let Some(current_ranges) = snippet.ranges.get(snippet.active_index) {
1913 let new_selections = old_selections
1914 .into_iter()
1915 .zip(current_ranges.iter())
1916 .map(|(selection, new_range)| {
1917 let new_range = new_range.to_offset(&buffer);
1918 Selection {
1919 id: selection.id,
1920 start: new_range.start,
1921 end: new_range.end,
1922 reversed: false,
1923 goal: SelectionGoal::None,
1924 }
1925 })
1926 .collect();
1927
1928 // Remove the snippet state when moving to the last tabstop.
1929 if snippet.active_index + 1 == snippet.ranges.len() {
1930 self.snippet_stack.pop();
1931 }
1932
1933 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1934 return true;
1935 }
1936 self.snippet_stack.pop();
1937 }
1938
1939 false
1940 }
1941
1942 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
1943 self.start_transaction(cx);
1944 self.select_all(&SelectAll, cx);
1945 self.insert("", cx);
1946 self.end_transaction(cx);
1947 }
1948
1949 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
1950 self.start_transaction(cx);
1951 let mut selections = self.local_selections::<Point>(cx);
1952 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1953 for selection in &mut selections {
1954 if selection.is_empty() {
1955 let head = selection.head().to_display_point(&display_map);
1956 let cursor = movement::left(&display_map, head)
1957 .unwrap()
1958 .to_point(&display_map);
1959 selection.set_head(cursor);
1960 selection.goal = SelectionGoal::None;
1961 }
1962 }
1963 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1964 self.insert("", cx);
1965 self.end_transaction(cx);
1966 }
1967
1968 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
1969 self.start_transaction(cx);
1970 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1971 let mut selections = self.local_selections::<Point>(cx);
1972 for selection in &mut selections {
1973 if selection.is_empty() {
1974 let head = selection.head().to_display_point(&display_map);
1975 let cursor = movement::right(&display_map, head)
1976 .unwrap()
1977 .to_point(&display_map);
1978 selection.set_head(cursor);
1979 selection.goal = SelectionGoal::None;
1980 }
1981 }
1982 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1983 self.insert(&"", cx);
1984 self.end_transaction(cx);
1985 }
1986
1987 pub fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
1988 if self.move_to_next_snippet_tabstop(cx) {
1989 return;
1990 }
1991
1992 self.start_transaction(cx);
1993 let tab_size = (self.build_settings)(cx).tab_size;
1994 let mut selections = self.local_selections::<Point>(cx);
1995 let mut last_indent = None;
1996 self.buffer.update(cx, |buffer, cx| {
1997 for selection in &mut selections {
1998 if selection.is_empty() {
1999 let char_column = buffer
2000 .read(cx)
2001 .text_for_range(Point::new(selection.start.row, 0)..selection.start)
2002 .flat_map(str::chars)
2003 .count();
2004 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
2005 buffer.edit(
2006 [selection.start..selection.start],
2007 " ".repeat(chars_to_next_tab_stop),
2008 cx,
2009 );
2010 selection.start.column += chars_to_next_tab_stop as u32;
2011 selection.end = selection.start;
2012 } else {
2013 let mut start_row = selection.start.row;
2014 let mut end_row = selection.end.row + 1;
2015
2016 // If a selection ends at the beginning of a line, don't indent
2017 // that last line.
2018 if selection.end.column == 0 {
2019 end_row -= 1;
2020 }
2021
2022 // Avoid re-indenting a row that has already been indented by a
2023 // previous selection, but still update this selection's column
2024 // to reflect that indentation.
2025 if let Some((last_indent_row, last_indent_len)) = last_indent {
2026 if last_indent_row == selection.start.row {
2027 selection.start.column += last_indent_len;
2028 start_row += 1;
2029 }
2030 if last_indent_row == selection.end.row {
2031 selection.end.column += last_indent_len;
2032 }
2033 }
2034
2035 for row in start_row..end_row {
2036 let indent_column = buffer.read(cx).indent_column_for_line(row) as usize;
2037 let columns_to_next_tab_stop = tab_size - (indent_column % tab_size);
2038 let row_start = Point::new(row, 0);
2039 buffer.edit(
2040 [row_start..row_start],
2041 " ".repeat(columns_to_next_tab_stop),
2042 cx,
2043 );
2044
2045 // Update this selection's endpoints to reflect the indentation.
2046 if row == selection.start.row {
2047 selection.start.column += columns_to_next_tab_stop as u32;
2048 }
2049 if row == selection.end.row {
2050 selection.end.column += columns_to_next_tab_stop as u32;
2051 }
2052
2053 last_indent = Some((row, columns_to_next_tab_stop as u32));
2054 }
2055 }
2056 }
2057 });
2058
2059 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2060 self.end_transaction(cx);
2061 }
2062
2063 pub fn outdent(&mut self, _: &Outdent, cx: &mut ViewContext<Self>) {
2064 if !self.snippet_stack.is_empty() {
2065 self.move_to_prev_snippet_tabstop(cx);
2066 return;
2067 }
2068
2069 self.start_transaction(cx);
2070 let tab_size = (self.build_settings)(cx).tab_size;
2071 let selections = self.local_selections::<Point>(cx);
2072 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2073 let mut deletion_ranges = Vec::new();
2074 let mut last_outdent = None;
2075 {
2076 let buffer = self.buffer.read(cx).read(cx);
2077 for selection in &selections {
2078 let mut rows = selection.spanned_rows(false, &display_map);
2079
2080 // Avoid re-outdenting a row that has already been outdented by a
2081 // previous selection.
2082 if let Some(last_row) = last_outdent {
2083 if last_row == rows.start {
2084 rows.start += 1;
2085 }
2086 }
2087
2088 for row in rows {
2089 let column = buffer.indent_column_for_line(row) as usize;
2090 if column > 0 {
2091 let mut deletion_len = (column % tab_size) as u32;
2092 if deletion_len == 0 {
2093 deletion_len = tab_size as u32;
2094 }
2095 deletion_ranges.push(Point::new(row, 0)..Point::new(row, deletion_len));
2096 last_outdent = Some(row);
2097 }
2098 }
2099 }
2100 }
2101 self.buffer.update(cx, |buffer, cx| {
2102 buffer.edit(deletion_ranges, "", cx);
2103 });
2104
2105 self.update_selections(
2106 self.local_selections::<usize>(cx),
2107 Some(Autoscroll::Fit),
2108 cx,
2109 );
2110 self.end_transaction(cx);
2111 }
2112
2113 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
2114 self.start_transaction(cx);
2115
2116 let selections = self.local_selections::<Point>(cx);
2117 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2118 let buffer = self.buffer.read(cx).snapshot(cx);
2119
2120 let mut new_cursors = Vec::new();
2121 let mut edit_ranges = Vec::new();
2122 let mut selections = selections.iter().peekable();
2123 while let Some(selection) = selections.next() {
2124 let mut rows = selection.spanned_rows(false, &display_map);
2125 let goal_display_column = selection.head().to_display_point(&display_map).column();
2126
2127 // Accumulate contiguous regions of rows that we want to delete.
2128 while let Some(next_selection) = selections.peek() {
2129 let next_rows = next_selection.spanned_rows(false, &display_map);
2130 if next_rows.start <= rows.end {
2131 rows.end = next_rows.end;
2132 selections.next().unwrap();
2133 } else {
2134 break;
2135 }
2136 }
2137
2138 let mut edit_start = Point::new(rows.start, 0).to_offset(&buffer);
2139 let edit_end;
2140 let cursor_buffer_row;
2141 if buffer.max_point().row >= rows.end {
2142 // If there's a line after the range, delete the \n from the end of the row range
2143 // and position the cursor on the next line.
2144 edit_end = Point::new(rows.end, 0).to_offset(&buffer);
2145 cursor_buffer_row = rows.end;
2146 } else {
2147 // If there isn't a line after the range, delete the \n from the line before the
2148 // start of the row range and position the cursor there.
2149 edit_start = edit_start.saturating_sub(1);
2150 edit_end = buffer.len();
2151 cursor_buffer_row = rows.start.saturating_sub(1);
2152 }
2153
2154 let mut cursor = Point::new(cursor_buffer_row, 0).to_display_point(&display_map);
2155 *cursor.column_mut() =
2156 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
2157
2158 new_cursors.push((
2159 selection.id,
2160 buffer.anchor_after(cursor.to_point(&display_map)),
2161 ));
2162 edit_ranges.push(edit_start..edit_end);
2163 }
2164
2165 let buffer = self.buffer.update(cx, |buffer, cx| {
2166 buffer.edit(edit_ranges, "", cx);
2167 buffer.snapshot(cx)
2168 });
2169 let new_selections = new_cursors
2170 .into_iter()
2171 .map(|(id, cursor)| {
2172 let cursor = cursor.to_point(&buffer);
2173 Selection {
2174 id,
2175 start: cursor,
2176 end: cursor,
2177 reversed: false,
2178 goal: SelectionGoal::None,
2179 }
2180 })
2181 .collect();
2182 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2183 self.end_transaction(cx);
2184 }
2185
2186 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
2187 self.start_transaction(cx);
2188
2189 let selections = self.local_selections::<Point>(cx);
2190 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2191 let buffer = &display_map.buffer_snapshot;
2192
2193 let mut edits = Vec::new();
2194 let mut selections_iter = selections.iter().peekable();
2195 while let Some(selection) = selections_iter.next() {
2196 // Avoid duplicating the same lines twice.
2197 let mut rows = selection.spanned_rows(false, &display_map);
2198
2199 while let Some(next_selection) = selections_iter.peek() {
2200 let next_rows = next_selection.spanned_rows(false, &display_map);
2201 if next_rows.start <= rows.end - 1 {
2202 rows.end = next_rows.end;
2203 selections_iter.next().unwrap();
2204 } else {
2205 break;
2206 }
2207 }
2208
2209 // Copy the text from the selected row region and splice it at the start of the region.
2210 let start = Point::new(rows.start, 0);
2211 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
2212 let text = buffer
2213 .text_for_range(start..end)
2214 .chain(Some("\n"))
2215 .collect::<String>();
2216 edits.push((start, text, rows.len() as u32));
2217 }
2218
2219 self.buffer.update(cx, |buffer, cx| {
2220 for (point, text, _) in edits.into_iter().rev() {
2221 buffer.edit(Some(point..point), text, cx);
2222 }
2223 });
2224
2225 self.request_autoscroll(Autoscroll::Fit, cx);
2226 self.end_transaction(cx);
2227 }
2228
2229 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
2230 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2231 let buffer = self.buffer.read(cx).snapshot(cx);
2232
2233 let mut edits = Vec::new();
2234 let mut unfold_ranges = Vec::new();
2235 let mut refold_ranges = Vec::new();
2236
2237 let selections = self.local_selections::<Point>(cx);
2238 let mut selections = selections.iter().peekable();
2239 let mut contiguous_row_selections = Vec::new();
2240 let mut new_selections = Vec::new();
2241
2242 while let Some(selection) = selections.next() {
2243 // Find all the selections that span a contiguous row range
2244 contiguous_row_selections.push(selection.clone());
2245 let start_row = selection.start.row;
2246 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
2247 display_map.next_line_boundary(selection.end).0.row + 1
2248 } else {
2249 selection.end.row
2250 };
2251
2252 while let Some(next_selection) = selections.peek() {
2253 if next_selection.start.row <= end_row {
2254 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
2255 display_map.next_line_boundary(next_selection.end).0.row + 1
2256 } else {
2257 next_selection.end.row
2258 };
2259 contiguous_row_selections.push(selections.next().unwrap().clone());
2260 } else {
2261 break;
2262 }
2263 }
2264
2265 // Move the text spanned by the row range to be before the line preceding the row range
2266 if start_row > 0 {
2267 let range_to_move = Point::new(start_row - 1, buffer.line_len(start_row - 1))
2268 ..Point::new(end_row - 1, buffer.line_len(end_row - 1));
2269 let insertion_point = display_map
2270 .prev_line_boundary(Point::new(start_row - 1, 0))
2271 .0;
2272
2273 // Don't move lines across excerpts
2274 if !buffer.range_contains_excerpt_boundary(insertion_point..range_to_move.end) {
2275 let text = buffer
2276 .text_for_range(range_to_move.clone())
2277 .flat_map(|s| s.chars())
2278 .skip(1)
2279 .chain(['\n'])
2280 .collect::<String>();
2281
2282 edits.push((
2283 buffer.anchor_after(range_to_move.start)
2284 ..buffer.anchor_before(range_to_move.end),
2285 String::new(),
2286 ));
2287 let insertion_anchor = buffer.anchor_after(insertion_point);
2288 edits.push((insertion_anchor.clone()..insertion_anchor, text));
2289
2290 let row_delta = range_to_move.start.row - insertion_point.row + 1;
2291
2292 // Move selections up
2293 new_selections.extend(contiguous_row_selections.drain(..).map(
2294 |mut selection| {
2295 selection.start.row -= row_delta;
2296 selection.end.row -= row_delta;
2297 selection
2298 },
2299 ));
2300
2301 // Move folds up
2302 unfold_ranges.push(range_to_move.clone());
2303 for fold in display_map.folds_in_range(
2304 buffer.anchor_before(range_to_move.start)
2305 ..buffer.anchor_after(range_to_move.end),
2306 ) {
2307 let mut start = fold.start.to_point(&buffer);
2308 let mut end = fold.end.to_point(&buffer);
2309 start.row -= row_delta;
2310 end.row -= row_delta;
2311 refold_ranges.push(start..end);
2312 }
2313 }
2314 }
2315
2316 // If we didn't move line(s), preserve the existing selections
2317 new_selections.extend(contiguous_row_selections.drain(..));
2318 }
2319
2320 self.start_transaction(cx);
2321 self.unfold_ranges(unfold_ranges, cx);
2322 self.buffer.update(cx, |buffer, cx| {
2323 for (range, text) in edits {
2324 buffer.edit([range], text, cx);
2325 }
2326 });
2327 self.fold_ranges(refold_ranges, cx);
2328 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2329 self.end_transaction(cx);
2330 }
2331
2332 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
2333 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2334 let buffer = self.buffer.read(cx).snapshot(cx);
2335
2336 let mut edits = Vec::new();
2337 let mut unfold_ranges = Vec::new();
2338 let mut refold_ranges = Vec::new();
2339
2340 let selections = self.local_selections::<Point>(cx);
2341 let mut selections = selections.iter().peekable();
2342 let mut contiguous_row_selections = Vec::new();
2343 let mut new_selections = Vec::new();
2344
2345 while let Some(selection) = selections.next() {
2346 // Find all the selections that span a contiguous row range
2347 contiguous_row_selections.push(selection.clone());
2348 let start_row = selection.start.row;
2349 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
2350 display_map.next_line_boundary(selection.end).0.row + 1
2351 } else {
2352 selection.end.row
2353 };
2354
2355 while let Some(next_selection) = selections.peek() {
2356 if next_selection.start.row <= end_row {
2357 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
2358 display_map.next_line_boundary(next_selection.end).0.row + 1
2359 } else {
2360 next_selection.end.row
2361 };
2362 contiguous_row_selections.push(selections.next().unwrap().clone());
2363 } else {
2364 break;
2365 }
2366 }
2367
2368 // Move the text spanned by the row range to be after the last line of the row range
2369 if end_row <= buffer.max_point().row {
2370 let range_to_move = Point::new(start_row, 0)..Point::new(end_row, 0);
2371 let insertion_point = display_map.next_line_boundary(Point::new(end_row, 0)).0;
2372
2373 // Don't move lines across excerpt boundaries
2374 if !buffer.range_contains_excerpt_boundary(range_to_move.start..insertion_point) {
2375 let mut text = String::from("\n");
2376 text.extend(buffer.text_for_range(range_to_move.clone()));
2377 text.pop(); // Drop trailing newline
2378 edits.push((
2379 buffer.anchor_after(range_to_move.start)
2380 ..buffer.anchor_before(range_to_move.end),
2381 String::new(),
2382 ));
2383 let insertion_anchor = buffer.anchor_after(insertion_point);
2384 edits.push((insertion_anchor.clone()..insertion_anchor, text));
2385
2386 let row_delta = insertion_point.row - range_to_move.end.row + 1;
2387
2388 // Move selections down
2389 new_selections.extend(contiguous_row_selections.drain(..).map(
2390 |mut selection| {
2391 selection.start.row += row_delta;
2392 selection.end.row += row_delta;
2393 selection
2394 },
2395 ));
2396
2397 // Move folds down
2398 unfold_ranges.push(range_to_move.clone());
2399 for fold in display_map.folds_in_range(
2400 buffer.anchor_before(range_to_move.start)
2401 ..buffer.anchor_after(range_to_move.end),
2402 ) {
2403 let mut start = fold.start.to_point(&buffer);
2404 let mut end = fold.end.to_point(&buffer);
2405 start.row += row_delta;
2406 end.row += row_delta;
2407 refold_ranges.push(start..end);
2408 }
2409 }
2410 }
2411
2412 // If we didn't move line(s), preserve the existing selections
2413 new_selections.extend(contiguous_row_selections.drain(..));
2414 }
2415
2416 self.start_transaction(cx);
2417 self.unfold_ranges(unfold_ranges, cx);
2418 self.buffer.update(cx, |buffer, cx| {
2419 for (range, text) in edits {
2420 buffer.edit([range], text, cx);
2421 }
2422 });
2423 self.fold_ranges(refold_ranges, cx);
2424 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2425 self.end_transaction(cx);
2426 }
2427
2428 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
2429 self.start_transaction(cx);
2430 let mut text = String::new();
2431 let mut selections = self.local_selections::<Point>(cx);
2432 let mut clipboard_selections = Vec::with_capacity(selections.len());
2433 {
2434 let buffer = self.buffer.read(cx).read(cx);
2435 let max_point = buffer.max_point();
2436 for selection in &mut selections {
2437 let is_entire_line = selection.is_empty();
2438 if is_entire_line {
2439 selection.start = Point::new(selection.start.row, 0);
2440 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
2441 }
2442 let mut len = 0;
2443 for chunk in buffer.text_for_range(selection.start..selection.end) {
2444 text.push_str(chunk);
2445 len += chunk.len();
2446 }
2447 clipboard_selections.push(ClipboardSelection {
2448 len,
2449 is_entire_line,
2450 });
2451 }
2452 }
2453 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2454 self.insert("", cx);
2455 self.end_transaction(cx);
2456
2457 cx.as_mut()
2458 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
2459 }
2460
2461 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
2462 let selections = self.local_selections::<Point>(cx);
2463 let mut text = String::new();
2464 let mut clipboard_selections = Vec::with_capacity(selections.len());
2465 {
2466 let buffer = self.buffer.read(cx).read(cx);
2467 let max_point = buffer.max_point();
2468 for selection in selections.iter() {
2469 let mut start = selection.start;
2470 let mut end = selection.end;
2471 let is_entire_line = selection.is_empty();
2472 if is_entire_line {
2473 start = Point::new(start.row, 0);
2474 end = cmp::min(max_point, Point::new(start.row + 1, 0));
2475 }
2476 let mut len = 0;
2477 for chunk in buffer.text_for_range(start..end) {
2478 text.push_str(chunk);
2479 len += chunk.len();
2480 }
2481 clipboard_selections.push(ClipboardSelection {
2482 len,
2483 is_entire_line,
2484 });
2485 }
2486 }
2487
2488 cx.as_mut()
2489 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
2490 }
2491
2492 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
2493 if let Some(item) = cx.as_mut().read_from_clipboard() {
2494 let clipboard_text = item.text();
2495 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
2496 let mut selections = self.local_selections::<usize>(cx);
2497 let all_selections_were_entire_line =
2498 clipboard_selections.iter().all(|s| s.is_entire_line);
2499 if clipboard_selections.len() != selections.len() {
2500 clipboard_selections.clear();
2501 }
2502
2503 let mut delta = 0_isize;
2504 let mut start_offset = 0;
2505 for (i, selection) in selections.iter_mut().enumerate() {
2506 let to_insert;
2507 let entire_line;
2508 if let Some(clipboard_selection) = clipboard_selections.get(i) {
2509 let end_offset = start_offset + clipboard_selection.len;
2510 to_insert = &clipboard_text[start_offset..end_offset];
2511 entire_line = clipboard_selection.is_entire_line;
2512 start_offset = end_offset
2513 } else {
2514 to_insert = clipboard_text.as_str();
2515 entire_line = all_selections_were_entire_line;
2516 }
2517
2518 selection.start = (selection.start as isize + delta) as usize;
2519 selection.end = (selection.end as isize + delta) as usize;
2520
2521 self.buffer.update(cx, |buffer, cx| {
2522 // If the corresponding selection was empty when this slice of the
2523 // clipboard text was written, then the entire line containing the
2524 // selection was copied. If this selection is also currently empty,
2525 // then paste the line before the current line of the buffer.
2526 let range = if selection.is_empty() && entire_line {
2527 let column = selection.start.to_point(&buffer.read(cx)).column as usize;
2528 let line_start = selection.start - column;
2529 line_start..line_start
2530 } else {
2531 selection.start..selection.end
2532 };
2533
2534 delta += to_insert.len() as isize - range.len() as isize;
2535 buffer.edit([range], to_insert, cx);
2536 selection.start += to_insert.len();
2537 selection.end = selection.start;
2538 });
2539 }
2540 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2541 } else {
2542 self.insert(clipboard_text, cx);
2543 }
2544 }
2545 }
2546
2547 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
2548 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
2549 if let Some((selections, _)) = self.selection_history.get(&tx_id).cloned() {
2550 self.set_selections(selections, cx);
2551 }
2552 self.request_autoscroll(Autoscroll::Fit, cx);
2553 }
2554 }
2555
2556 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
2557 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
2558 if let Some((_, Some(selections))) = self.selection_history.get(&tx_id).cloned() {
2559 self.set_selections(selections, cx);
2560 }
2561 self.request_autoscroll(Autoscroll::Fit, cx);
2562 }
2563 }
2564
2565 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
2566 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2567 let mut selections = self.local_selections::<Point>(cx);
2568 for selection in &mut selections {
2569 let start = selection.start.to_display_point(&display_map);
2570 let end = selection.end.to_display_point(&display_map);
2571
2572 if start != end {
2573 selection.end = selection.start.clone();
2574 } else {
2575 let cursor = movement::left(&display_map, start)
2576 .unwrap()
2577 .to_point(&display_map);
2578 selection.start = cursor.clone();
2579 selection.end = cursor;
2580 }
2581 selection.reversed = false;
2582 selection.goal = SelectionGoal::None;
2583 }
2584 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2585 }
2586
2587 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
2588 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2589 let mut selections = self.local_selections::<Point>(cx);
2590 for selection in &mut selections {
2591 let head = selection.head().to_display_point(&display_map);
2592 let cursor = movement::left(&display_map, head)
2593 .unwrap()
2594 .to_point(&display_map);
2595 selection.set_head(cursor);
2596 selection.goal = SelectionGoal::None;
2597 }
2598 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2599 }
2600
2601 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
2602 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2603 let mut selections = self.local_selections::<Point>(cx);
2604 for selection in &mut selections {
2605 let start = selection.start.to_display_point(&display_map);
2606 let end = selection.end.to_display_point(&display_map);
2607
2608 if start != end {
2609 selection.start = selection.end.clone();
2610 } else {
2611 let cursor = movement::right(&display_map, end)
2612 .unwrap()
2613 .to_point(&display_map);
2614 selection.start = cursor;
2615 selection.end = cursor;
2616 }
2617 selection.reversed = false;
2618 selection.goal = SelectionGoal::None;
2619 }
2620 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2621 }
2622
2623 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
2624 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2625 let mut selections = self.local_selections::<Point>(cx);
2626 for selection in &mut selections {
2627 let head = selection.head().to_display_point(&display_map);
2628 let cursor = movement::right(&display_map, head)
2629 .unwrap()
2630 .to_point(&display_map);
2631 selection.set_head(cursor);
2632 selection.goal = SelectionGoal::None;
2633 }
2634 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2635 }
2636
2637 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
2638 if let Some(completion_state) = &mut self.completion_state {
2639 if completion_state.selected_item > 0 {
2640 completion_state.selected_item -= 1;
2641 completion_state
2642 .list
2643 .scroll_to(ScrollTarget::Show(completion_state.selected_item));
2644 }
2645 cx.notify();
2646 return;
2647 }
2648
2649 if matches!(self.mode, EditorMode::SingleLine) {
2650 cx.propagate_action();
2651 return;
2652 }
2653
2654 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2655 let mut selections = self.local_selections::<Point>(cx);
2656 for selection in &mut selections {
2657 let start = selection.start.to_display_point(&display_map);
2658 let end = selection.end.to_display_point(&display_map);
2659 if start != end {
2660 selection.goal = SelectionGoal::None;
2661 }
2662
2663 let (start, goal) = movement::up(&display_map, start, selection.goal).unwrap();
2664 let cursor = start.to_point(&display_map);
2665 selection.start = cursor;
2666 selection.end = cursor;
2667 selection.goal = goal;
2668 selection.reversed = false;
2669 }
2670 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2671 }
2672
2673 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
2674 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2675 let mut selections = self.local_selections::<Point>(cx);
2676 for selection in &mut selections {
2677 let head = selection.head().to_display_point(&display_map);
2678 let (head, goal) = movement::up(&display_map, head, selection.goal).unwrap();
2679 let cursor = head.to_point(&display_map);
2680 selection.set_head(cursor);
2681 selection.goal = goal;
2682 }
2683 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2684 }
2685
2686 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
2687 if let Some(completion_state) = &mut self.completion_state {
2688 if completion_state.selected_item + 1 < completion_state.matches.len() {
2689 completion_state.selected_item += 1;
2690 completion_state
2691 .list
2692 .scroll_to(ScrollTarget::Show(completion_state.selected_item));
2693 }
2694 cx.notify();
2695 return;
2696 }
2697
2698 if matches!(self.mode, EditorMode::SingleLine) {
2699 cx.propagate_action();
2700 return;
2701 }
2702
2703 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2704 let mut selections = self.local_selections::<Point>(cx);
2705 for selection in &mut selections {
2706 let start = selection.start.to_display_point(&display_map);
2707 let end = selection.end.to_display_point(&display_map);
2708 if start != end {
2709 selection.goal = SelectionGoal::None;
2710 }
2711
2712 let (start, goal) = movement::down(&display_map, end, selection.goal).unwrap();
2713 let cursor = start.to_point(&display_map);
2714 selection.start = cursor;
2715 selection.end = cursor;
2716 selection.goal = goal;
2717 selection.reversed = false;
2718 }
2719 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2720 }
2721
2722 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
2723 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2724 let mut selections = self.local_selections::<Point>(cx);
2725 for selection in &mut selections {
2726 let head = selection.head().to_display_point(&display_map);
2727 let (head, goal) = movement::down(&display_map, head, selection.goal).unwrap();
2728 let cursor = head.to_point(&display_map);
2729 selection.set_head(cursor);
2730 selection.goal = goal;
2731 }
2732 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2733 }
2734
2735 pub fn move_to_previous_word_boundary(
2736 &mut self,
2737 _: &MoveToPreviousWordBoundary,
2738 cx: &mut ViewContext<Self>,
2739 ) {
2740 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2741 let mut selections = self.local_selections::<Point>(cx);
2742 for selection in &mut selections {
2743 let head = selection.head().to_display_point(&display_map);
2744 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2745 selection.start = cursor.clone();
2746 selection.end = cursor;
2747 selection.reversed = false;
2748 selection.goal = SelectionGoal::None;
2749 }
2750 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2751 }
2752
2753 pub fn select_to_previous_word_boundary(
2754 &mut self,
2755 _: &SelectToPreviousWordBoundary,
2756 cx: &mut ViewContext<Self>,
2757 ) {
2758 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2759 let mut selections = self.local_selections::<Point>(cx);
2760 for selection in &mut selections {
2761 let head = selection.head().to_display_point(&display_map);
2762 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2763 selection.set_head(cursor);
2764 selection.goal = SelectionGoal::None;
2765 }
2766 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2767 }
2768
2769 pub fn delete_to_previous_word_boundary(
2770 &mut self,
2771 _: &DeleteToPreviousWordBoundary,
2772 cx: &mut ViewContext<Self>,
2773 ) {
2774 self.start_transaction(cx);
2775 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2776 let mut selections = self.local_selections::<Point>(cx);
2777 for selection in &mut selections {
2778 if selection.is_empty() {
2779 let head = selection.head().to_display_point(&display_map);
2780 let cursor =
2781 movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2782 selection.set_head(cursor);
2783 selection.goal = SelectionGoal::None;
2784 }
2785 }
2786 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2787 self.insert("", cx);
2788 self.end_transaction(cx);
2789 }
2790
2791 pub fn move_to_next_word_boundary(
2792 &mut self,
2793 _: &MoveToNextWordBoundary,
2794 cx: &mut ViewContext<Self>,
2795 ) {
2796 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2797 let mut selections = self.local_selections::<Point>(cx);
2798 for selection in &mut selections {
2799 let head = selection.head().to_display_point(&display_map);
2800 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
2801 selection.start = cursor;
2802 selection.end = cursor;
2803 selection.reversed = false;
2804 selection.goal = SelectionGoal::None;
2805 }
2806 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2807 }
2808
2809 pub fn select_to_next_word_boundary(
2810 &mut self,
2811 _: &SelectToNextWordBoundary,
2812 cx: &mut ViewContext<Self>,
2813 ) {
2814 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2815 let mut selections = self.local_selections::<Point>(cx);
2816 for selection in &mut selections {
2817 let head = selection.head().to_display_point(&display_map);
2818 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
2819 selection.set_head(cursor);
2820 selection.goal = SelectionGoal::None;
2821 }
2822 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2823 }
2824
2825 pub fn delete_to_next_word_boundary(
2826 &mut self,
2827 _: &DeleteToNextWordBoundary,
2828 cx: &mut ViewContext<Self>,
2829 ) {
2830 self.start_transaction(cx);
2831 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2832 let mut selections = self.local_selections::<Point>(cx);
2833 for selection in &mut selections {
2834 if selection.is_empty() {
2835 let head = selection.head().to_display_point(&display_map);
2836 let cursor =
2837 movement::next_word_boundary(&display_map, head).to_point(&display_map);
2838 selection.set_head(cursor);
2839 selection.goal = SelectionGoal::None;
2840 }
2841 }
2842 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2843 self.insert("", cx);
2844 self.end_transaction(cx);
2845 }
2846
2847 pub fn move_to_beginning_of_line(
2848 &mut self,
2849 _: &MoveToBeginningOfLine,
2850 cx: &mut ViewContext<Self>,
2851 ) {
2852 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2853 let mut selections = self.local_selections::<Point>(cx);
2854 for selection in &mut selections {
2855 let head = selection.head().to_display_point(&display_map);
2856 let new_head = movement::line_beginning(&display_map, head, true);
2857 let cursor = new_head.to_point(&display_map);
2858 selection.start = cursor;
2859 selection.end = cursor;
2860 selection.reversed = false;
2861 selection.goal = SelectionGoal::None;
2862 }
2863 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2864 }
2865
2866 pub fn select_to_beginning_of_line(
2867 &mut self,
2868 SelectToBeginningOfLine(toggle_indent): &SelectToBeginningOfLine,
2869 cx: &mut ViewContext<Self>,
2870 ) {
2871 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2872 let mut selections = self.local_selections::<Point>(cx);
2873 for selection in &mut selections {
2874 let head = selection.head().to_display_point(&display_map);
2875 let new_head = movement::line_beginning(&display_map, head, *toggle_indent);
2876 selection.set_head(new_head.to_point(&display_map));
2877 selection.goal = SelectionGoal::None;
2878 }
2879 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2880 }
2881
2882 pub fn delete_to_beginning_of_line(
2883 &mut self,
2884 _: &DeleteToBeginningOfLine,
2885 cx: &mut ViewContext<Self>,
2886 ) {
2887 self.start_transaction(cx);
2888 self.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
2889 self.backspace(&Backspace, cx);
2890 self.end_transaction(cx);
2891 }
2892
2893 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
2894 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2895 let mut selections = self.local_selections::<Point>(cx);
2896 {
2897 for selection in &mut selections {
2898 let head = selection.head().to_display_point(&display_map);
2899 let new_head = movement::line_end(&display_map, head);
2900 let anchor = new_head.to_point(&display_map);
2901 selection.start = anchor.clone();
2902 selection.end = anchor;
2903 selection.reversed = false;
2904 selection.goal = SelectionGoal::None;
2905 }
2906 }
2907 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2908 }
2909
2910 pub fn select_to_end_of_line(&mut self, _: &SelectToEndOfLine, cx: &mut ViewContext<Self>) {
2911 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2912 let mut selections = self.local_selections::<Point>(cx);
2913 for selection in &mut selections {
2914 let head = selection.head().to_display_point(&display_map);
2915 let new_head = movement::line_end(&display_map, head);
2916 selection.set_head(new_head.to_point(&display_map));
2917 selection.goal = SelectionGoal::None;
2918 }
2919 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2920 }
2921
2922 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
2923 self.start_transaction(cx);
2924 self.select_to_end_of_line(&SelectToEndOfLine, cx);
2925 self.delete(&Delete, cx);
2926 self.end_transaction(cx);
2927 }
2928
2929 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
2930 self.start_transaction(cx);
2931 self.select_to_end_of_line(&SelectToEndOfLine, cx);
2932 self.cut(&Cut, cx);
2933 self.end_transaction(cx);
2934 }
2935
2936 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
2937 if matches!(self.mode, EditorMode::SingleLine) {
2938 cx.propagate_action();
2939 return;
2940 }
2941
2942 let selection = Selection {
2943 id: post_inc(&mut self.next_selection_id),
2944 start: 0,
2945 end: 0,
2946 reversed: false,
2947 goal: SelectionGoal::None,
2948 };
2949 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2950 }
2951
2952 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
2953 let mut selection = self.local_selections::<Point>(cx).last().unwrap().clone();
2954 selection.set_head(Point::zero());
2955 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2956 }
2957
2958 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
2959 if matches!(self.mode, EditorMode::SingleLine) {
2960 cx.propagate_action();
2961 return;
2962 }
2963
2964 let cursor = self.buffer.read(cx).read(cx).len();
2965 let selection = Selection {
2966 id: post_inc(&mut self.next_selection_id),
2967 start: cursor,
2968 end: cursor,
2969 reversed: false,
2970 goal: SelectionGoal::None,
2971 };
2972 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2973 }
2974
2975 pub fn set_nav_history(&mut self, nav_history: Option<ItemNavHistory>) {
2976 self.nav_history = nav_history;
2977 }
2978
2979 pub fn nav_history(&self) -> Option<&ItemNavHistory> {
2980 self.nav_history.as_ref()
2981 }
2982
2983 fn push_to_nav_history(
2984 &self,
2985 position: Anchor,
2986 new_position: Option<Point>,
2987 cx: &mut ViewContext<Self>,
2988 ) {
2989 if let Some(nav_history) = &self.nav_history {
2990 let buffer = self.buffer.read(cx).read(cx);
2991 let offset = position.to_offset(&buffer);
2992 let point = position.to_point(&buffer);
2993 drop(buffer);
2994
2995 if let Some(new_position) = new_position {
2996 let row_delta = (new_position.row as i64 - point.row as i64).abs();
2997 if row_delta < MIN_NAVIGATION_HISTORY_ROW_DELTA {
2998 return;
2999 }
3000 }
3001
3002 nav_history.push(Some(NavigationData {
3003 anchor: position,
3004 offset,
3005 }));
3006 }
3007 }
3008
3009 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
3010 let mut selection = self.local_selections::<usize>(cx).first().unwrap().clone();
3011 selection.set_head(self.buffer.read(cx).read(cx).len());
3012 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3013 }
3014
3015 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
3016 let selection = Selection {
3017 id: post_inc(&mut self.next_selection_id),
3018 start: 0,
3019 end: self.buffer.read(cx).read(cx).len(),
3020 reversed: false,
3021 goal: SelectionGoal::None,
3022 };
3023 self.update_selections(vec![selection], None, cx);
3024 }
3025
3026 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
3027 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3028 let mut selections = self.local_selections::<Point>(cx);
3029 let max_point = display_map.buffer_snapshot.max_point();
3030 for selection in &mut selections {
3031 let rows = selection.spanned_rows(true, &display_map);
3032 selection.start = Point::new(rows.start, 0);
3033 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
3034 selection.reversed = false;
3035 }
3036 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3037 }
3038
3039 pub fn split_selection_into_lines(
3040 &mut self,
3041 _: &SplitSelectionIntoLines,
3042 cx: &mut ViewContext<Self>,
3043 ) {
3044 let mut to_unfold = Vec::new();
3045 let mut new_selections = Vec::new();
3046 {
3047 let selections = self.local_selections::<Point>(cx);
3048 let buffer = self.buffer.read(cx).read(cx);
3049 for selection in selections {
3050 for row in selection.start.row..selection.end.row {
3051 let cursor = Point::new(row, buffer.line_len(row));
3052 new_selections.push(Selection {
3053 id: post_inc(&mut self.next_selection_id),
3054 start: cursor,
3055 end: cursor,
3056 reversed: false,
3057 goal: SelectionGoal::None,
3058 });
3059 }
3060 new_selections.push(Selection {
3061 id: selection.id,
3062 start: selection.end,
3063 end: selection.end,
3064 reversed: false,
3065 goal: SelectionGoal::None,
3066 });
3067 to_unfold.push(selection.start..selection.end);
3068 }
3069 }
3070 self.unfold_ranges(to_unfold, cx);
3071 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3072 }
3073
3074 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
3075 self.add_selection(true, cx);
3076 }
3077
3078 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
3079 self.add_selection(false, cx);
3080 }
3081
3082 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
3083 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3084 let mut selections = self.local_selections::<Point>(cx);
3085 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
3086 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
3087 let range = oldest_selection.display_range(&display_map).sorted();
3088 let columns = cmp::min(range.start.column(), range.end.column())
3089 ..cmp::max(range.start.column(), range.end.column());
3090
3091 selections.clear();
3092 let mut stack = Vec::new();
3093 for row in range.start.row()..=range.end.row() {
3094 if let Some(selection) = self.build_columnar_selection(
3095 &display_map,
3096 row,
3097 &columns,
3098 oldest_selection.reversed,
3099 ) {
3100 stack.push(selection.id);
3101 selections.push(selection);
3102 }
3103 }
3104
3105 if above {
3106 stack.reverse();
3107 }
3108
3109 AddSelectionsState { above, stack }
3110 });
3111
3112 let last_added_selection = *state.stack.last().unwrap();
3113 let mut new_selections = Vec::new();
3114 if above == state.above {
3115 let end_row = if above {
3116 0
3117 } else {
3118 display_map.max_point().row()
3119 };
3120
3121 'outer: for selection in selections {
3122 if selection.id == last_added_selection {
3123 let range = selection.display_range(&display_map).sorted();
3124 debug_assert_eq!(range.start.row(), range.end.row());
3125 let mut row = range.start.row();
3126 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
3127 {
3128 start..end
3129 } else {
3130 cmp::min(range.start.column(), range.end.column())
3131 ..cmp::max(range.start.column(), range.end.column())
3132 };
3133
3134 while row != end_row {
3135 if above {
3136 row -= 1;
3137 } else {
3138 row += 1;
3139 }
3140
3141 if let Some(new_selection) = self.build_columnar_selection(
3142 &display_map,
3143 row,
3144 &columns,
3145 selection.reversed,
3146 ) {
3147 state.stack.push(new_selection.id);
3148 if above {
3149 new_selections.push(new_selection);
3150 new_selections.push(selection);
3151 } else {
3152 new_selections.push(selection);
3153 new_selections.push(new_selection);
3154 }
3155
3156 continue 'outer;
3157 }
3158 }
3159 }
3160
3161 new_selections.push(selection);
3162 }
3163 } else {
3164 new_selections = selections;
3165 new_selections.retain(|s| s.id != last_added_selection);
3166 state.stack.pop();
3167 }
3168
3169 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3170 if state.stack.len() > 1 {
3171 self.add_selections_state = Some(state);
3172 }
3173 }
3174
3175 pub fn select_next(&mut self, action: &SelectNext, cx: &mut ViewContext<Self>) {
3176 let replace_newest = action.0;
3177 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3178 let buffer = &display_map.buffer_snapshot;
3179 let mut selections = self.local_selections::<usize>(cx);
3180 if let Some(mut select_next_state) = self.select_next_state.take() {
3181 let query = &select_next_state.query;
3182 if !select_next_state.done {
3183 let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
3184 let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
3185 let mut next_selected_range = None;
3186
3187 let bytes_after_last_selection =
3188 buffer.bytes_in_range(last_selection.end..buffer.len());
3189 let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
3190 let query_matches = query
3191 .stream_find_iter(bytes_after_last_selection)
3192 .map(|result| (last_selection.end, result))
3193 .chain(
3194 query
3195 .stream_find_iter(bytes_before_first_selection)
3196 .map(|result| (0, result)),
3197 );
3198 for (start_offset, query_match) in query_matches {
3199 let query_match = query_match.unwrap(); // can only fail due to I/O
3200 let offset_range =
3201 start_offset + query_match.start()..start_offset + query_match.end();
3202 let display_range = offset_range.start.to_display_point(&display_map)
3203 ..offset_range.end.to_display_point(&display_map);
3204
3205 if !select_next_state.wordwise
3206 || (!movement::is_inside_word(&display_map, display_range.start)
3207 && !movement::is_inside_word(&display_map, display_range.end))
3208 {
3209 next_selected_range = Some(offset_range);
3210 break;
3211 }
3212 }
3213
3214 if let Some(next_selected_range) = next_selected_range {
3215 if replace_newest {
3216 if let Some(newest_id) =
3217 selections.iter().max_by_key(|s| s.id).map(|s| s.id)
3218 {
3219 selections.retain(|s| s.id != newest_id);
3220 }
3221 }
3222 selections.push(Selection {
3223 id: post_inc(&mut self.next_selection_id),
3224 start: next_selected_range.start,
3225 end: next_selected_range.end,
3226 reversed: false,
3227 goal: SelectionGoal::None,
3228 });
3229 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3230 } else {
3231 select_next_state.done = true;
3232 }
3233 }
3234
3235 self.select_next_state = Some(select_next_state);
3236 } else if selections.len() == 1 {
3237 let selection = selections.last_mut().unwrap();
3238 if selection.start == selection.end {
3239 let word_range = movement::surrounding_word(
3240 &display_map,
3241 selection.start.to_display_point(&display_map),
3242 );
3243 selection.start = word_range.start.to_offset(&display_map, Bias::Left);
3244 selection.end = word_range.end.to_offset(&display_map, Bias::Left);
3245 selection.goal = SelectionGoal::None;
3246 selection.reversed = false;
3247
3248 let query = buffer
3249 .text_for_range(selection.start..selection.end)
3250 .collect::<String>();
3251 let select_state = SelectNextState {
3252 query: AhoCorasick::new_auto_configured(&[query]),
3253 wordwise: true,
3254 done: false,
3255 };
3256 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3257 self.select_next_state = Some(select_state);
3258 } else {
3259 let query = buffer
3260 .text_for_range(selection.start..selection.end)
3261 .collect::<String>();
3262 self.select_next_state = Some(SelectNextState {
3263 query: AhoCorasick::new_auto_configured(&[query]),
3264 wordwise: false,
3265 done: false,
3266 });
3267 self.select_next(action, cx);
3268 }
3269 }
3270 }
3271
3272 pub fn toggle_comments(&mut self, _: &ToggleComments, cx: &mut ViewContext<Self>) {
3273 // Get the line comment prefix. Split its trailing whitespace into a separate string,
3274 // as that portion won't be used for detecting if a line is a comment.
3275 let full_comment_prefix =
3276 if let Some(prefix) = self.language(cx).and_then(|l| l.line_comment_prefix()) {
3277 prefix.to_string()
3278 } else {
3279 return;
3280 };
3281 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
3282 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
3283
3284 self.start_transaction(cx);
3285 let mut selections = self.local_selections::<Point>(cx);
3286 let mut all_selection_lines_are_comments = true;
3287 let mut edit_ranges = Vec::new();
3288 let mut last_toggled_row = None;
3289 self.buffer.update(cx, |buffer, cx| {
3290 for selection in &mut selections {
3291 edit_ranges.clear();
3292 let snapshot = buffer.snapshot(cx);
3293
3294 let end_row =
3295 if selection.end.row > selection.start.row && selection.end.column == 0 {
3296 selection.end.row
3297 } else {
3298 selection.end.row + 1
3299 };
3300
3301 for row in selection.start.row..end_row {
3302 // If multiple selections contain a given row, avoid processing that
3303 // row more than once.
3304 if last_toggled_row == Some(row) {
3305 continue;
3306 } else {
3307 last_toggled_row = Some(row);
3308 }
3309
3310 if snapshot.is_line_blank(row) {
3311 continue;
3312 }
3313
3314 let start = Point::new(row, snapshot.indent_column_for_line(row));
3315 let mut line_bytes = snapshot
3316 .bytes_in_range(start..snapshot.max_point())
3317 .flatten()
3318 .copied();
3319
3320 // If this line currently begins with the line comment prefix, then record
3321 // the range containing the prefix.
3322 if all_selection_lines_are_comments
3323 && line_bytes
3324 .by_ref()
3325 .take(comment_prefix.len())
3326 .eq(comment_prefix.bytes())
3327 {
3328 // Include any whitespace that matches the comment prefix.
3329 let matching_whitespace_len = line_bytes
3330 .zip(comment_prefix_whitespace.bytes())
3331 .take_while(|(a, b)| a == b)
3332 .count() as u32;
3333 let end = Point::new(
3334 row,
3335 start.column + comment_prefix.len() as u32 + matching_whitespace_len,
3336 );
3337 edit_ranges.push(start..end);
3338 }
3339 // If this line does not begin with the line comment prefix, then record
3340 // the position where the prefix should be inserted.
3341 else {
3342 all_selection_lines_are_comments = false;
3343 edit_ranges.push(start..start);
3344 }
3345 }
3346
3347 if !edit_ranges.is_empty() {
3348 if all_selection_lines_are_comments {
3349 buffer.edit(edit_ranges.iter().cloned(), "", cx);
3350 } else {
3351 let min_column = edit_ranges.iter().map(|r| r.start.column).min().unwrap();
3352 let edit_ranges = edit_ranges.iter().map(|range| {
3353 let position = Point::new(range.start.row, min_column);
3354 position..position
3355 });
3356 buffer.edit(edit_ranges, &full_comment_prefix, cx);
3357 }
3358 }
3359 }
3360 });
3361
3362 self.update_selections(
3363 self.local_selections::<usize>(cx),
3364 Some(Autoscroll::Fit),
3365 cx,
3366 );
3367 self.end_transaction(cx);
3368 }
3369
3370 pub fn select_larger_syntax_node(
3371 &mut self,
3372 _: &SelectLargerSyntaxNode,
3373 cx: &mut ViewContext<Self>,
3374 ) {
3375 let old_selections = self.local_selections::<usize>(cx).into_boxed_slice();
3376 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3377 let buffer = self.buffer.read(cx).snapshot(cx);
3378
3379 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
3380 let mut selected_larger_node = false;
3381 let new_selections = old_selections
3382 .iter()
3383 .map(|selection| {
3384 let old_range = selection.start..selection.end;
3385 let mut new_range = old_range.clone();
3386 while let Some(containing_range) =
3387 buffer.range_for_syntax_ancestor(new_range.clone())
3388 {
3389 new_range = containing_range;
3390 if !display_map.intersects_fold(new_range.start)
3391 && !display_map.intersects_fold(new_range.end)
3392 {
3393 break;
3394 }
3395 }
3396
3397 selected_larger_node |= new_range != old_range;
3398 Selection {
3399 id: selection.id,
3400 start: new_range.start,
3401 end: new_range.end,
3402 goal: SelectionGoal::None,
3403 reversed: selection.reversed,
3404 }
3405 })
3406 .collect::<Vec<_>>();
3407
3408 if selected_larger_node {
3409 stack.push(old_selections);
3410 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3411 }
3412 self.select_larger_syntax_node_stack = stack;
3413 }
3414
3415 pub fn select_smaller_syntax_node(
3416 &mut self,
3417 _: &SelectSmallerSyntaxNode,
3418 cx: &mut ViewContext<Self>,
3419 ) {
3420 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
3421 if let Some(selections) = stack.pop() {
3422 self.update_selections(selections.to_vec(), Some(Autoscroll::Fit), cx);
3423 }
3424 self.select_larger_syntax_node_stack = stack;
3425 }
3426
3427 pub fn move_to_enclosing_bracket(
3428 &mut self,
3429 _: &MoveToEnclosingBracket,
3430 cx: &mut ViewContext<Self>,
3431 ) {
3432 let mut selections = self.local_selections::<usize>(cx);
3433 let buffer = self.buffer.read(cx).snapshot(cx);
3434 for selection in &mut selections {
3435 if let Some((open_range, close_range)) =
3436 buffer.enclosing_bracket_ranges(selection.start..selection.end)
3437 {
3438 let close_range = close_range.to_inclusive();
3439 let destination = if close_range.contains(&selection.start)
3440 && close_range.contains(&selection.end)
3441 {
3442 open_range.end
3443 } else {
3444 *close_range.start()
3445 };
3446 selection.start = destination;
3447 selection.end = destination;
3448 }
3449 }
3450
3451 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3452 }
3453
3454 pub fn show_next_diagnostic(&mut self, _: &ShowNextDiagnostic, cx: &mut ViewContext<Self>) {
3455 let buffer = self.buffer.read(cx).snapshot(cx);
3456 let selection = self.newest_selection::<usize>(&buffer);
3457 let active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
3458 active_diagnostics
3459 .primary_range
3460 .to_offset(&buffer)
3461 .to_inclusive()
3462 });
3463 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
3464 if active_primary_range.contains(&selection.head()) {
3465 *active_primary_range.end()
3466 } else {
3467 selection.head()
3468 }
3469 } else {
3470 selection.head()
3471 };
3472
3473 loop {
3474 let next_group = buffer
3475 .diagnostics_in_range::<_, usize>(search_start..buffer.len())
3476 .find_map(|entry| {
3477 if entry.diagnostic.is_primary
3478 && !entry.range.is_empty()
3479 && Some(entry.range.end) != active_primary_range.as_ref().map(|r| *r.end())
3480 {
3481 Some((entry.range, entry.diagnostic.group_id))
3482 } else {
3483 None
3484 }
3485 });
3486
3487 if let Some((primary_range, group_id)) = next_group {
3488 self.activate_diagnostics(group_id, cx);
3489 self.update_selections(
3490 vec![Selection {
3491 id: selection.id,
3492 start: primary_range.start,
3493 end: primary_range.start,
3494 reversed: false,
3495 goal: SelectionGoal::None,
3496 }],
3497 Some(Autoscroll::Center),
3498 cx,
3499 );
3500 break;
3501 } else if search_start == 0 {
3502 break;
3503 } else {
3504 // Cycle around to the start of the buffer.
3505 search_start = 0;
3506 }
3507 }
3508 }
3509
3510 pub fn go_to_definition(
3511 workspace: &mut Workspace,
3512 _: &GoToDefinition,
3513 cx: &mut ViewContext<Workspace>,
3514 ) {
3515 let active_item = workspace.active_item(cx);
3516 let editor_handle = if let Some(editor) = active_item
3517 .as_ref()
3518 .and_then(|item| item.act_as::<Self>(cx))
3519 {
3520 editor
3521 } else {
3522 return;
3523 };
3524
3525 let editor = editor_handle.read(cx);
3526 let buffer = editor.buffer.read(cx);
3527 let head = editor.newest_selection::<usize>(&buffer.read(cx)).head();
3528 let (buffer, head) = editor.buffer.read(cx).text_anchor_for_position(head, cx);
3529 let definitions = workspace
3530 .project()
3531 .update(cx, |project, cx| project.definition(&buffer, head, cx));
3532 cx.spawn(|workspace, mut cx| async move {
3533 let definitions = definitions.await?;
3534 workspace.update(&mut cx, |workspace, cx| {
3535 for definition in definitions {
3536 let range = definition
3537 .target_range
3538 .to_offset(definition.target_buffer.read(cx));
3539 let target_editor_handle = workspace
3540 .open_item(BufferItemHandle(definition.target_buffer), cx)
3541 .downcast::<Self>()
3542 .unwrap();
3543
3544 target_editor_handle.update(cx, |target_editor, cx| {
3545 // When selecting a definition in a different buffer, disable the nav history
3546 // to avoid creating a history entry at the previous cursor location.
3547 let disabled_history = if editor_handle == target_editor_handle {
3548 None
3549 } else {
3550 target_editor.nav_history.take()
3551 };
3552 target_editor.select_ranges([range], Some(Autoscroll::Center), cx);
3553 if disabled_history.is_some() {
3554 target_editor.nav_history = disabled_history;
3555 }
3556 });
3557 }
3558 });
3559
3560 Ok::<(), anyhow::Error>(())
3561 })
3562 .detach_and_log_err(cx);
3563 }
3564
3565 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
3566 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
3567 let buffer = self.buffer.read(cx).snapshot(cx);
3568 let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
3569 let is_valid = buffer
3570 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone())
3571 .any(|entry| {
3572 entry.diagnostic.is_primary
3573 && !entry.range.is_empty()
3574 && entry.range.start == primary_range_start
3575 && entry.diagnostic.message == active_diagnostics.primary_message
3576 });
3577
3578 if is_valid != active_diagnostics.is_valid {
3579 active_diagnostics.is_valid = is_valid;
3580 let mut new_styles = HashMap::default();
3581 for (block_id, diagnostic) in &active_diagnostics.blocks {
3582 new_styles.insert(
3583 *block_id,
3584 diagnostic_block_renderer(
3585 diagnostic.clone(),
3586 is_valid,
3587 self.build_settings.clone(),
3588 ),
3589 );
3590 }
3591 self.display_map
3592 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
3593 }
3594 }
3595 }
3596
3597 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) {
3598 self.dismiss_diagnostics(cx);
3599 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
3600 let buffer = self.buffer.read(cx).snapshot(cx);
3601
3602 let mut primary_range = None;
3603 let mut primary_message = None;
3604 let mut group_end = Point::zero();
3605 let diagnostic_group = buffer
3606 .diagnostic_group::<Point>(group_id)
3607 .map(|entry| {
3608 if entry.range.end > group_end {
3609 group_end = entry.range.end;
3610 }
3611 if entry.diagnostic.is_primary {
3612 primary_range = Some(entry.range.clone());
3613 primary_message = Some(entry.diagnostic.message.clone());
3614 }
3615 entry
3616 })
3617 .collect::<Vec<_>>();
3618 let primary_range = primary_range.unwrap();
3619 let primary_message = primary_message.unwrap();
3620 let primary_range =
3621 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
3622
3623 let blocks = display_map
3624 .insert_blocks(
3625 diagnostic_group.iter().map(|entry| {
3626 let build_settings = self.build_settings.clone();
3627 let diagnostic = entry.diagnostic.clone();
3628 let message_height = diagnostic.message.lines().count() as u8;
3629
3630 BlockProperties {
3631 position: buffer.anchor_after(entry.range.start),
3632 height: message_height,
3633 render: diagnostic_block_renderer(diagnostic, true, build_settings),
3634 disposition: BlockDisposition::Below,
3635 }
3636 }),
3637 cx,
3638 )
3639 .into_iter()
3640 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
3641 .collect();
3642
3643 Some(ActiveDiagnosticGroup {
3644 primary_range,
3645 primary_message,
3646 blocks,
3647 is_valid: true,
3648 })
3649 });
3650 }
3651
3652 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
3653 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
3654 self.display_map.update(cx, |display_map, cx| {
3655 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
3656 });
3657 cx.notify();
3658 }
3659 }
3660
3661 fn build_columnar_selection(
3662 &mut self,
3663 display_map: &DisplaySnapshot,
3664 row: u32,
3665 columns: &Range<u32>,
3666 reversed: bool,
3667 ) -> Option<Selection<Point>> {
3668 let is_empty = columns.start == columns.end;
3669 let line_len = display_map.line_len(row);
3670 if columns.start < line_len || (is_empty && columns.start == line_len) {
3671 let start = DisplayPoint::new(row, columns.start);
3672 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
3673 Some(Selection {
3674 id: post_inc(&mut self.next_selection_id),
3675 start: start.to_point(display_map),
3676 end: end.to_point(display_map),
3677 reversed,
3678 goal: SelectionGoal::ColumnRange {
3679 start: columns.start,
3680 end: columns.end,
3681 },
3682 })
3683 } else {
3684 None
3685 }
3686 }
3687
3688 pub fn local_selections_in_range(
3689 &self,
3690 range: Range<Anchor>,
3691 display_map: &DisplaySnapshot,
3692 ) -> Vec<Selection<Point>> {
3693 let buffer = &display_map.buffer_snapshot;
3694
3695 let start_ix = match self
3696 .selections
3697 .binary_search_by(|probe| probe.end.cmp(&range.start, &buffer).unwrap())
3698 {
3699 Ok(ix) | Err(ix) => ix,
3700 };
3701 let end_ix = match self
3702 .selections
3703 .binary_search_by(|probe| probe.start.cmp(&range.end, &buffer).unwrap())
3704 {
3705 Ok(ix) => ix + 1,
3706 Err(ix) => ix,
3707 };
3708
3709 fn point_selection(
3710 selection: &Selection<Anchor>,
3711 buffer: &MultiBufferSnapshot,
3712 ) -> Selection<Point> {
3713 let start = selection.start.to_point(&buffer);
3714 let end = selection.end.to_point(&buffer);
3715 Selection {
3716 id: selection.id,
3717 start,
3718 end,
3719 reversed: selection.reversed,
3720 goal: selection.goal,
3721 }
3722 }
3723
3724 self.selections[start_ix..end_ix]
3725 .iter()
3726 .chain(
3727 self.pending_selection
3728 .as_ref()
3729 .map(|pending| &pending.selection),
3730 )
3731 .map(|s| point_selection(s, &buffer))
3732 .collect()
3733 }
3734
3735 pub fn local_selections<'a, D>(&self, cx: &'a AppContext) -> Vec<Selection<D>>
3736 where
3737 D: 'a + TextDimension + Ord + Sub<D, Output = D>,
3738 {
3739 let buffer = self.buffer.read(cx).snapshot(cx);
3740 let mut selections = self
3741 .resolve_selections::<D, _>(self.selections.iter(), &buffer)
3742 .peekable();
3743
3744 let mut pending_selection = self.pending_selection::<D>(&buffer);
3745
3746 iter::from_fn(move || {
3747 if let Some(pending) = pending_selection.as_mut() {
3748 while let Some(next_selection) = selections.peek() {
3749 if pending.start <= next_selection.end && pending.end >= next_selection.start {
3750 let next_selection = selections.next().unwrap();
3751 if next_selection.start < pending.start {
3752 pending.start = next_selection.start;
3753 }
3754 if next_selection.end > pending.end {
3755 pending.end = next_selection.end;
3756 }
3757 } else if next_selection.end < pending.start {
3758 return selections.next();
3759 } else {
3760 break;
3761 }
3762 }
3763
3764 pending_selection.take()
3765 } else {
3766 selections.next()
3767 }
3768 })
3769 .collect()
3770 }
3771
3772 fn resolve_selections<'a, D, I>(
3773 &self,
3774 selections: I,
3775 snapshot: &MultiBufferSnapshot,
3776 ) -> impl 'a + Iterator<Item = Selection<D>>
3777 where
3778 D: TextDimension + Ord + Sub<D, Output = D>,
3779 I: 'a + IntoIterator<Item = &'a Selection<Anchor>>,
3780 {
3781 let (to_summarize, selections) = selections.into_iter().tee();
3782 let mut summaries = snapshot
3783 .summaries_for_anchors::<D, _>(to_summarize.flat_map(|s| [&s.start, &s.end]))
3784 .into_iter();
3785 selections.map(move |s| Selection {
3786 id: s.id,
3787 start: summaries.next().unwrap(),
3788 end: summaries.next().unwrap(),
3789 reversed: s.reversed,
3790 goal: s.goal,
3791 })
3792 }
3793
3794 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3795 &self,
3796 snapshot: &MultiBufferSnapshot,
3797 ) -> Option<Selection<D>> {
3798 self.pending_selection
3799 .as_ref()
3800 .map(|pending| self.resolve_selection(&pending.selection, &snapshot))
3801 }
3802
3803 fn resolve_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3804 &self,
3805 selection: &Selection<Anchor>,
3806 buffer: &MultiBufferSnapshot,
3807 ) -> Selection<D> {
3808 Selection {
3809 id: selection.id,
3810 start: selection.start.summary::<D>(&buffer),
3811 end: selection.end.summary::<D>(&buffer),
3812 reversed: selection.reversed,
3813 goal: selection.goal,
3814 }
3815 }
3816
3817 fn selection_count<'a>(&self) -> usize {
3818 let mut count = self.selections.len();
3819 if self.pending_selection.is_some() {
3820 count += 1;
3821 }
3822 count
3823 }
3824
3825 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3826 &self,
3827 snapshot: &MultiBufferSnapshot,
3828 ) -> Selection<D> {
3829 self.selections
3830 .iter()
3831 .min_by_key(|s| s.id)
3832 .map(|selection| self.resolve_selection(selection, snapshot))
3833 .or_else(|| self.pending_selection(snapshot))
3834 .unwrap()
3835 }
3836
3837 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3838 &self,
3839 snapshot: &MultiBufferSnapshot,
3840 ) -> Selection<D> {
3841 self.resolve_selection(self.newest_anchor_selection().unwrap(), snapshot)
3842 }
3843
3844 pub fn newest_anchor_selection(&self) -> Option<&Selection<Anchor>> {
3845 self.pending_selection
3846 .as_ref()
3847 .map(|s| &s.selection)
3848 .or_else(|| self.selections.iter().max_by_key(|s| s.id))
3849 }
3850
3851 pub fn update_selections<T>(
3852 &mut self,
3853 mut selections: Vec<Selection<T>>,
3854 autoscroll: Option<Autoscroll>,
3855 cx: &mut ViewContext<Self>,
3856 ) where
3857 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
3858 {
3859 let buffer = self.buffer.read(cx).snapshot(cx);
3860 selections.sort_unstable_by_key(|s| s.start);
3861
3862 // Merge overlapping selections.
3863 let mut i = 1;
3864 while i < selections.len() {
3865 if selections[i - 1].end >= selections[i].start {
3866 let removed = selections.remove(i);
3867 if removed.start < selections[i - 1].start {
3868 selections[i - 1].start = removed.start;
3869 }
3870 if removed.end > selections[i - 1].end {
3871 selections[i - 1].end = removed.end;
3872 }
3873 } else {
3874 i += 1;
3875 }
3876 }
3877
3878 if let Some(autoscroll) = autoscroll {
3879 self.request_autoscroll(autoscroll, cx);
3880 }
3881
3882 self.set_selections(
3883 Arc::from_iter(selections.into_iter().map(|selection| {
3884 let end_bias = if selection.end > selection.start {
3885 Bias::Left
3886 } else {
3887 Bias::Right
3888 };
3889 Selection {
3890 id: selection.id,
3891 start: buffer.anchor_after(selection.start),
3892 end: buffer.anchor_at(selection.end, end_bias),
3893 reversed: selection.reversed,
3894 goal: selection.goal,
3895 }
3896 })),
3897 cx,
3898 );
3899 }
3900
3901 /// Compute new ranges for any selections that were located in excerpts that have
3902 /// since been removed.
3903 ///
3904 /// Returns a `HashMap` indicating which selections whose former head position
3905 /// was no longer present. The keys of the map are selection ids. The values are
3906 /// the id of the new excerpt where the head of the selection has been moved.
3907 pub fn refresh_selections(&mut self, cx: &mut ViewContext<Self>) -> HashMap<usize, ExcerptId> {
3908 let snapshot = self.buffer.read(cx).read(cx);
3909 let anchors_with_status = snapshot.refresh_anchors(
3910 self.selections
3911 .iter()
3912 .flat_map(|selection| [&selection.start, &selection.end]),
3913 );
3914 let offsets =
3915 snapshot.summaries_for_anchors::<usize, _>(anchors_with_status.iter().map(|a| &a.1));
3916 let offsets = offsets.chunks(2);
3917 let statuses = anchors_with_status
3918 .chunks(2)
3919 .map(|a| (a[0].0 / 2, a[0].2, a[1].2));
3920
3921 let mut selections_with_lost_position = HashMap::default();
3922 let new_selections = offsets
3923 .zip(statuses)
3924 .map(|(offsets, (selection_ix, kept_start, kept_end))| {
3925 let selection = &self.selections[selection_ix];
3926 let kept_head = if selection.reversed {
3927 kept_start
3928 } else {
3929 kept_end
3930 };
3931 if !kept_head {
3932 selections_with_lost_position
3933 .insert(selection.id, selection.head().excerpt_id.clone());
3934 }
3935
3936 Selection {
3937 id: selection.id,
3938 start: offsets[0],
3939 end: offsets[1],
3940 reversed: selection.reversed,
3941 goal: selection.goal,
3942 }
3943 })
3944 .collect();
3945 drop(snapshot);
3946 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3947 selections_with_lost_position
3948 }
3949
3950 fn set_selections(&mut self, selections: Arc<[Selection<Anchor>]>, cx: &mut ViewContext<Self>) {
3951 let old_cursor_position = self.newest_anchor_selection().map(|s| s.head());
3952 self.selections = selections;
3953 if self.focused {
3954 self.buffer.update(cx, |buffer, cx| {
3955 buffer.set_active_selections(&self.selections, cx)
3956 });
3957 }
3958
3959 let buffer = self.buffer.read(cx).snapshot(cx);
3960 self.pending_selection = None;
3961 self.add_selections_state = None;
3962 self.select_next_state = None;
3963 self.select_larger_syntax_node_stack.clear();
3964 self.autoclose_stack.invalidate(&self.selections, &buffer);
3965 self.snippet_stack.invalidate(&self.selections, &buffer);
3966
3967 let new_cursor_position = self
3968 .selections
3969 .iter()
3970 .max_by_key(|s| s.id)
3971 .map(|s| s.head());
3972 if let Some(old_cursor_position) = old_cursor_position {
3973 if let Some(new_cursor_position) = new_cursor_position.as_ref() {
3974 self.push_to_nav_history(
3975 old_cursor_position,
3976 Some(new_cursor_position.to_point(&buffer)),
3977 cx,
3978 );
3979 }
3980 }
3981
3982 if let Some((completion_state, cursor_position)) =
3983 self.completion_state.as_mut().zip(new_cursor_position)
3984 {
3985 let cursor_position = cursor_position.to_offset(&buffer);
3986 let (word_range, kind) =
3987 buffer.surrounding_word(completion_state.initial_position.clone());
3988 if kind == Some(CharKind::Word) && word_range.to_inclusive().contains(&cursor_position)
3989 {
3990 let query = Self::completion_query(&buffer, cursor_position);
3991 smol::block_on(completion_state.filter(query.as_deref(), cx.background().clone()));
3992 self.show_completions(&ShowCompletions, cx);
3993 } else {
3994 self.hide_completions(cx);
3995 }
3996 }
3997
3998 self.pause_cursor_blinking(cx);
3999 cx.emit(Event::SelectionsChanged);
4000 }
4001
4002 pub fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
4003 self.autoscroll_request = Some(autoscroll);
4004 cx.notify();
4005 }
4006
4007 fn start_transaction(&mut self, cx: &mut ViewContext<Self>) {
4008 self.start_transaction_at(Instant::now(), cx);
4009 }
4010
4011 fn start_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
4012 self.end_selection(cx);
4013 if let Some(tx_id) = self
4014 .buffer
4015 .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
4016 {
4017 self.selection_history
4018 .insert(tx_id, (self.selections.clone(), None));
4019 }
4020 }
4021
4022 fn end_transaction(&mut self, cx: &mut ViewContext<Self>) {
4023 self.end_transaction_at(Instant::now(), cx);
4024 }
4025
4026 fn end_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
4027 if let Some(tx_id) = self
4028 .buffer
4029 .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
4030 {
4031 if let Some((_, end_selections)) = self.selection_history.get_mut(&tx_id) {
4032 *end_selections = Some(self.selections.clone());
4033 } else {
4034 log::error!("unexpectedly ended a transaction that wasn't started by this editor");
4035 }
4036 }
4037 }
4038
4039 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
4040 log::info!("Editor::page_up");
4041 }
4042
4043 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
4044 log::info!("Editor::page_down");
4045 }
4046
4047 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
4048 let mut fold_ranges = Vec::new();
4049
4050 let selections = self.local_selections::<Point>(cx);
4051 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4052 for selection in selections {
4053 let range = selection.display_range(&display_map).sorted();
4054 let buffer_start_row = range.start.to_point(&display_map).row;
4055
4056 for row in (0..=range.end.row()).rev() {
4057 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
4058 let fold_range = self.foldable_range_for_line(&display_map, row);
4059 if fold_range.end.row >= buffer_start_row {
4060 fold_ranges.push(fold_range);
4061 if row <= range.start.row() {
4062 break;
4063 }
4064 }
4065 }
4066 }
4067 }
4068
4069 self.fold_ranges(fold_ranges, cx);
4070 }
4071
4072 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
4073 let selections = self.local_selections::<Point>(cx);
4074 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4075 let buffer = &display_map.buffer_snapshot;
4076 let ranges = selections
4077 .iter()
4078 .map(|s| {
4079 let range = s.display_range(&display_map).sorted();
4080 let mut start = range.start.to_point(&display_map);
4081 let mut end = range.end.to_point(&display_map);
4082 start.column = 0;
4083 end.column = buffer.line_len(end.row);
4084 start..end
4085 })
4086 .collect::<Vec<_>>();
4087 self.unfold_ranges(ranges, cx);
4088 }
4089
4090 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
4091 let max_point = display_map.max_point();
4092 if display_row >= max_point.row() {
4093 false
4094 } else {
4095 let (start_indent, is_blank) = display_map.line_indent(display_row);
4096 if is_blank {
4097 false
4098 } else {
4099 for display_row in display_row + 1..=max_point.row() {
4100 let (indent, is_blank) = display_map.line_indent(display_row);
4101 if !is_blank {
4102 return indent > start_indent;
4103 }
4104 }
4105 false
4106 }
4107 }
4108 }
4109
4110 fn foldable_range_for_line(
4111 &self,
4112 display_map: &DisplaySnapshot,
4113 start_row: u32,
4114 ) -> Range<Point> {
4115 let max_point = display_map.max_point();
4116
4117 let (start_indent, _) = display_map.line_indent(start_row);
4118 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
4119 let mut end = None;
4120 for row in start_row + 1..=max_point.row() {
4121 let (indent, is_blank) = display_map.line_indent(row);
4122 if !is_blank && indent <= start_indent {
4123 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
4124 break;
4125 }
4126 }
4127
4128 let end = end.unwrap_or(max_point);
4129 return start.to_point(display_map)..end.to_point(display_map);
4130 }
4131
4132 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
4133 let selections = self.local_selections::<Point>(cx);
4134 let ranges = selections.into_iter().map(|s| s.start..s.end);
4135 self.fold_ranges(ranges, cx);
4136 }
4137
4138 fn fold_ranges<T: ToOffset>(
4139 &mut self,
4140 ranges: impl IntoIterator<Item = Range<T>>,
4141 cx: &mut ViewContext<Self>,
4142 ) {
4143 let mut ranges = ranges.into_iter().peekable();
4144 if ranges.peek().is_some() {
4145 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
4146 self.request_autoscroll(Autoscroll::Fit, cx);
4147 cx.notify();
4148 }
4149 }
4150
4151 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
4152 if !ranges.is_empty() {
4153 self.display_map
4154 .update(cx, |map, cx| map.unfold(ranges, cx));
4155 self.request_autoscroll(Autoscroll::Fit, cx);
4156 cx.notify();
4157 }
4158 }
4159
4160 pub fn insert_blocks(
4161 &mut self,
4162 blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
4163 cx: &mut ViewContext<Self>,
4164 ) -> Vec<BlockId> {
4165 let blocks = self
4166 .display_map
4167 .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
4168 self.request_autoscroll(Autoscroll::Fit, cx);
4169 blocks
4170 }
4171
4172 pub fn replace_blocks(
4173 &mut self,
4174 blocks: HashMap<BlockId, RenderBlock>,
4175 cx: &mut ViewContext<Self>,
4176 ) {
4177 self.display_map
4178 .update(cx, |display_map, _| display_map.replace_blocks(blocks));
4179 self.request_autoscroll(Autoscroll::Fit, cx);
4180 }
4181
4182 pub fn remove_blocks(&mut self, block_ids: HashSet<BlockId>, cx: &mut ViewContext<Self>) {
4183 self.display_map.update(cx, |display_map, cx| {
4184 display_map.remove_blocks(block_ids, cx)
4185 });
4186 }
4187
4188 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
4189 self.display_map
4190 .update(cx, |map, cx| map.snapshot(cx))
4191 .longest_row()
4192 }
4193
4194 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
4195 self.display_map
4196 .update(cx, |map, cx| map.snapshot(cx))
4197 .max_point()
4198 }
4199
4200 pub fn text(&self, cx: &AppContext) -> String {
4201 self.buffer.read(cx).read(cx).text()
4202 }
4203
4204 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
4205 self.display_map
4206 .update(cx, |map, cx| map.snapshot(cx))
4207 .text()
4208 }
4209
4210 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
4211 self.display_map
4212 .update(cx, |map, cx| map.set_wrap_width(width, cx))
4213 }
4214
4215 pub fn set_highlighted_rows(&mut self, rows: Option<Range<u32>>) {
4216 self.highlighted_rows = rows;
4217 }
4218
4219 pub fn highlighted_rows(&self) -> Option<Range<u32>> {
4220 self.highlighted_rows.clone()
4221 }
4222
4223 pub fn highlight_ranges<T: 'static>(
4224 &mut self,
4225 ranges: Vec<Range<Anchor>>,
4226 color: Color,
4227 cx: &mut ViewContext<Self>,
4228 ) {
4229 self.highlighted_ranges
4230 .insert(TypeId::of::<T>(), (color, ranges));
4231 cx.notify();
4232 }
4233
4234 pub fn clear_highlighted_ranges<T: 'static>(&mut self, cx: &mut ViewContext<Self>) {
4235 self.highlighted_ranges.remove(&TypeId::of::<T>());
4236 cx.notify();
4237 }
4238
4239 #[cfg(feature = "test-support")]
4240 pub fn all_highlighted_ranges(
4241 &mut self,
4242 cx: &mut ViewContext<Self>,
4243 ) -> Vec<(Range<DisplayPoint>, Color)> {
4244 let snapshot = self.snapshot(cx);
4245 let buffer = &snapshot.buffer_snapshot;
4246 let start = buffer.anchor_before(0);
4247 let end = buffer.anchor_after(buffer.len());
4248 self.highlighted_ranges_in_range(start..end, &snapshot)
4249 }
4250
4251 pub fn highlighted_ranges_for_type<T: 'static>(&self) -> Option<(Color, &[Range<Anchor>])> {
4252 self.highlighted_ranges
4253 .get(&TypeId::of::<T>())
4254 .map(|(color, ranges)| (*color, ranges.as_slice()))
4255 }
4256
4257 pub fn highlighted_ranges_in_range(
4258 &self,
4259 search_range: Range<Anchor>,
4260 display_snapshot: &DisplaySnapshot,
4261 ) -> Vec<(Range<DisplayPoint>, Color)> {
4262 let mut results = Vec::new();
4263 let buffer = &display_snapshot.buffer_snapshot;
4264 for (color, ranges) in self.highlighted_ranges.values() {
4265 let start_ix = match ranges.binary_search_by(|probe| {
4266 let cmp = probe.end.cmp(&search_range.start, &buffer).unwrap();
4267 if cmp.is_gt() {
4268 Ordering::Greater
4269 } else {
4270 Ordering::Less
4271 }
4272 }) {
4273 Ok(i) | Err(i) => i,
4274 };
4275 for range in &ranges[start_ix..] {
4276 if range.start.cmp(&search_range.end, &buffer).unwrap().is_ge() {
4277 break;
4278 }
4279 let start = range
4280 .start
4281 .to_point(buffer)
4282 .to_display_point(display_snapshot);
4283 let end = range
4284 .end
4285 .to_point(buffer)
4286 .to_display_point(display_snapshot);
4287 results.push((start..end, *color))
4288 }
4289 }
4290 results
4291 }
4292
4293 fn next_blink_epoch(&mut self) -> usize {
4294 self.blink_epoch += 1;
4295 self.blink_epoch
4296 }
4297
4298 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
4299 if !self.focused {
4300 return;
4301 }
4302
4303 self.show_local_cursors = true;
4304 cx.notify();
4305
4306 let epoch = self.next_blink_epoch();
4307 cx.spawn(|this, mut cx| {
4308 let this = this.downgrade();
4309 async move {
4310 Timer::after(CURSOR_BLINK_INTERVAL).await;
4311 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
4312 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
4313 }
4314 }
4315 })
4316 .detach();
4317 }
4318
4319 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
4320 if epoch == self.blink_epoch {
4321 self.blinking_paused = false;
4322 self.blink_cursors(epoch, cx);
4323 }
4324 }
4325
4326 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
4327 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
4328 self.show_local_cursors = !self.show_local_cursors;
4329 cx.notify();
4330
4331 let epoch = self.next_blink_epoch();
4332 cx.spawn(|this, mut cx| {
4333 let this = this.downgrade();
4334 async move {
4335 Timer::after(CURSOR_BLINK_INTERVAL).await;
4336 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
4337 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
4338 }
4339 }
4340 })
4341 .detach();
4342 }
4343 }
4344
4345 pub fn show_local_cursors(&self) -> bool {
4346 self.show_local_cursors
4347 }
4348
4349 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
4350 self.refresh_active_diagnostics(cx);
4351 cx.notify();
4352 }
4353
4354 fn on_buffer_event(
4355 &mut self,
4356 _: ModelHandle<MultiBuffer>,
4357 event: &language::Event,
4358 cx: &mut ViewContext<Self>,
4359 ) {
4360 match event {
4361 language::Event::Edited => cx.emit(Event::Edited),
4362 language::Event::Dirtied => cx.emit(Event::Dirtied),
4363 language::Event::Saved => cx.emit(Event::Saved),
4364 language::Event::FileHandleChanged => cx.emit(Event::TitleChanged),
4365 language::Event::Reloaded => cx.emit(Event::TitleChanged),
4366 language::Event::Closed => cx.emit(Event::Closed),
4367 _ => {}
4368 }
4369 }
4370
4371 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
4372 cx.notify();
4373 }
4374}
4375
4376impl EditorSnapshot {
4377 pub fn is_focused(&self) -> bool {
4378 self.is_focused
4379 }
4380
4381 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
4382 self.placeholder_text.as_ref()
4383 }
4384
4385 pub fn scroll_position(&self) -> Vector2F {
4386 compute_scroll_position(
4387 &self.display_snapshot,
4388 self.scroll_position,
4389 &self.scroll_top_anchor,
4390 )
4391 }
4392}
4393
4394impl Deref for EditorSnapshot {
4395 type Target = DisplaySnapshot;
4396
4397 fn deref(&self) -> &Self::Target {
4398 &self.display_snapshot
4399 }
4400}
4401
4402impl EditorSettings {
4403 #[cfg(any(test, feature = "test-support"))]
4404 pub fn test(cx: &AppContext) -> Self {
4405 use theme::{ContainedLabel, ContainedText, DiagnosticHeader, DiagnosticPathHeader};
4406
4407 Self {
4408 tab_size: 4,
4409 soft_wrap: SoftWrap::None,
4410 style: {
4411 let font_cache: &gpui::FontCache = cx.font_cache();
4412 let font_family_name = Arc::from("Monaco");
4413 let font_properties = Default::default();
4414 let font_family_id = font_cache.load_family(&[&font_family_name]).unwrap();
4415 let font_id = font_cache
4416 .select_font(font_family_id, &font_properties)
4417 .unwrap();
4418 let text = gpui::fonts::TextStyle {
4419 font_family_name,
4420 font_family_id,
4421 font_id,
4422 font_size: 14.,
4423 color: gpui::color::Color::from_u32(0xff0000ff),
4424 font_properties,
4425 underline: None,
4426 };
4427 let default_diagnostic_style = DiagnosticStyle {
4428 message: text.clone().into(),
4429 header: Default::default(),
4430 text_scale_factor: 1.,
4431 };
4432 EditorStyle {
4433 text: text.clone(),
4434 placeholder_text: None,
4435 background: Default::default(),
4436 gutter_background: Default::default(),
4437 gutter_padding_factor: 2.,
4438 active_line_background: Default::default(),
4439 highlighted_line_background: Default::default(),
4440 line_number: Default::default(),
4441 line_number_active: Default::default(),
4442 selection: Default::default(),
4443 guest_selections: Default::default(),
4444 syntax: Default::default(),
4445 diagnostic_path_header: DiagnosticPathHeader {
4446 container: Default::default(),
4447 filename: ContainedText {
4448 container: Default::default(),
4449 text: text.clone(),
4450 },
4451 path: ContainedText {
4452 container: Default::default(),
4453 text: text.clone(),
4454 },
4455 text_scale_factor: 1.,
4456 },
4457 diagnostic_header: DiagnosticHeader {
4458 container: Default::default(),
4459 message: ContainedLabel {
4460 container: Default::default(),
4461 label: text.clone().into(),
4462 },
4463 code: ContainedText {
4464 container: Default::default(),
4465 text: text.clone(),
4466 },
4467 icon_width_factor: 1.,
4468 text_scale_factor: 1.,
4469 },
4470 error_diagnostic: default_diagnostic_style.clone(),
4471 invalid_error_diagnostic: default_diagnostic_style.clone(),
4472 warning_diagnostic: default_diagnostic_style.clone(),
4473 invalid_warning_diagnostic: default_diagnostic_style.clone(),
4474 information_diagnostic: default_diagnostic_style.clone(),
4475 invalid_information_diagnostic: default_diagnostic_style.clone(),
4476 hint_diagnostic: default_diagnostic_style.clone(),
4477 invalid_hint_diagnostic: default_diagnostic_style.clone(),
4478 autocomplete: Default::default(),
4479 }
4480 },
4481 }
4482 }
4483}
4484
4485fn compute_scroll_position(
4486 snapshot: &DisplaySnapshot,
4487 mut scroll_position: Vector2F,
4488 scroll_top_anchor: &Option<Anchor>,
4489) -> Vector2F {
4490 if let Some(anchor) = scroll_top_anchor {
4491 let scroll_top = anchor.to_display_point(snapshot).row() as f32;
4492 scroll_position.set_y(scroll_top + scroll_position.y());
4493 } else {
4494 scroll_position.set_y(0.);
4495 }
4496 scroll_position
4497}
4498
4499#[derive(Copy, Clone)]
4500pub enum Event {
4501 Activate,
4502 Edited,
4503 Blurred,
4504 Dirtied,
4505 Saved,
4506 TitleChanged,
4507 SelectionsChanged,
4508 Closed,
4509}
4510
4511impl Entity for Editor {
4512 type Event = Event;
4513}
4514
4515impl View for Editor {
4516 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
4517 let settings = (self.build_settings)(cx);
4518 self.display_map.update(cx, |map, cx| {
4519 map.set_font(
4520 settings.style.text.font_id,
4521 settings.style.text.font_size,
4522 cx,
4523 )
4524 });
4525 EditorElement::new(self.handle.clone(), settings).boxed()
4526 }
4527
4528 fn ui_name() -> &'static str {
4529 "Editor"
4530 }
4531
4532 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
4533 self.focused = true;
4534 self.blink_cursors(self.blink_epoch, cx);
4535 self.buffer.update(cx, |buffer, cx| {
4536 buffer.avoid_grouping_next_transaction(cx);
4537 buffer.set_active_selections(&self.selections, cx)
4538 });
4539 }
4540
4541 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
4542 self.focused = false;
4543 self.show_local_cursors = false;
4544 self.buffer
4545 .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
4546 self.hide_completions(cx);
4547 cx.emit(Event::Blurred);
4548 cx.notify();
4549 }
4550
4551 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
4552 let mut cx = Self::default_keymap_context();
4553 let mode = match self.mode {
4554 EditorMode::SingleLine => "single_line",
4555 EditorMode::AutoHeight { .. } => "auto_height",
4556 EditorMode::Full => "full",
4557 };
4558 cx.map.insert("mode".into(), mode.into());
4559 if self.completion_state.is_some() {
4560 cx.set.insert("completing".into());
4561 }
4562 cx
4563 }
4564}
4565
4566impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
4567 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
4568 let start = self.start.to_point(buffer);
4569 let end = self.end.to_point(buffer);
4570 if self.reversed {
4571 end..start
4572 } else {
4573 start..end
4574 }
4575 }
4576
4577 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
4578 let start = self.start.to_offset(buffer);
4579 let end = self.end.to_offset(buffer);
4580 if self.reversed {
4581 end..start
4582 } else {
4583 start..end
4584 }
4585 }
4586
4587 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
4588 let start = self
4589 .start
4590 .to_point(&map.buffer_snapshot)
4591 .to_display_point(map);
4592 let end = self
4593 .end
4594 .to_point(&map.buffer_snapshot)
4595 .to_display_point(map);
4596 if self.reversed {
4597 end..start
4598 } else {
4599 start..end
4600 }
4601 }
4602
4603 fn spanned_rows(
4604 &self,
4605 include_end_if_at_line_start: bool,
4606 map: &DisplaySnapshot,
4607 ) -> Range<u32> {
4608 let start = self.start.to_point(&map.buffer_snapshot);
4609 let mut end = self.end.to_point(&map.buffer_snapshot);
4610 if !include_end_if_at_line_start && start.row != end.row && end.column == 0 {
4611 end.row -= 1;
4612 }
4613
4614 let buffer_start = map.prev_line_boundary(start).0;
4615 let buffer_end = map.next_line_boundary(end).0;
4616 buffer_start.row..buffer_end.row + 1
4617 }
4618}
4619
4620impl<T: InvalidationRegion> InvalidationStack<T> {
4621 fn invalidate<S>(&mut self, selections: &[Selection<S>], buffer: &MultiBufferSnapshot)
4622 where
4623 S: Clone + ToOffset,
4624 {
4625 while let Some(region) = self.last() {
4626 let all_selections_inside_invalidation_ranges =
4627 if selections.len() == region.ranges().len() {
4628 selections
4629 .iter()
4630 .zip(region.ranges().iter().map(|r| r.to_offset(&buffer)))
4631 .all(|(selection, invalidation_range)| {
4632 let head = selection.head().to_offset(&buffer);
4633 invalidation_range.start <= head && invalidation_range.end >= head
4634 })
4635 } else {
4636 false
4637 };
4638
4639 if all_selections_inside_invalidation_ranges {
4640 break;
4641 } else {
4642 self.pop();
4643 }
4644 }
4645 }
4646}
4647
4648impl<T> Default for InvalidationStack<T> {
4649 fn default() -> Self {
4650 Self(Default::default())
4651 }
4652}
4653
4654impl<T> Deref for InvalidationStack<T> {
4655 type Target = Vec<T>;
4656
4657 fn deref(&self) -> &Self::Target {
4658 &self.0
4659 }
4660}
4661
4662impl<T> DerefMut for InvalidationStack<T> {
4663 fn deref_mut(&mut self) -> &mut Self::Target {
4664 &mut self.0
4665 }
4666}
4667
4668impl InvalidationRegion for BracketPairState {
4669 fn ranges(&self) -> &[Range<Anchor>] {
4670 &self.ranges
4671 }
4672}
4673
4674impl InvalidationRegion for SnippetState {
4675 fn ranges(&self) -> &[Range<Anchor>] {
4676 &self.ranges[self.active_index]
4677 }
4678}
4679
4680pub fn diagnostic_block_renderer(
4681 diagnostic: Diagnostic,
4682 is_valid: bool,
4683 build_settings: BuildSettings,
4684) -> RenderBlock {
4685 let mut highlighted_lines = Vec::new();
4686 for line in diagnostic.message.lines() {
4687 highlighted_lines.push(highlight_diagnostic_message(line));
4688 }
4689
4690 Arc::new(move |cx: &BlockContext| {
4691 let settings = build_settings(cx);
4692 let style = diagnostic_style(diagnostic.severity, is_valid, &settings.style);
4693 let font_size = (style.text_scale_factor * settings.style.text.font_size).round();
4694 Flex::column()
4695 .with_children(highlighted_lines.iter().map(|(line, highlights)| {
4696 Label::new(
4697 line.clone(),
4698 style.message.clone().with_font_size(font_size),
4699 )
4700 .with_highlights(highlights.clone())
4701 .contained()
4702 .with_margin_left(cx.anchor_x)
4703 .boxed()
4704 }))
4705 .aligned()
4706 .left()
4707 .boxed()
4708 })
4709}
4710
4711pub fn highlight_diagnostic_message(message: &str) -> (String, Vec<usize>) {
4712 let mut message_without_backticks = String::new();
4713 let mut prev_offset = 0;
4714 let mut inside_block = false;
4715 let mut highlights = Vec::new();
4716 for (match_ix, (offset, _)) in message
4717 .match_indices('`')
4718 .chain([(message.len(), "")])
4719 .enumerate()
4720 {
4721 message_without_backticks.push_str(&message[prev_offset..offset]);
4722 if inside_block {
4723 highlights.extend(prev_offset - match_ix..offset - match_ix);
4724 }
4725
4726 inside_block = !inside_block;
4727 prev_offset = offset + 1;
4728 }
4729
4730 (message_without_backticks, highlights)
4731}
4732
4733pub fn diagnostic_style(
4734 severity: DiagnosticSeverity,
4735 valid: bool,
4736 style: &EditorStyle,
4737) -> DiagnosticStyle {
4738 match (severity, valid) {
4739 (DiagnosticSeverity::ERROR, true) => style.error_diagnostic.clone(),
4740 (DiagnosticSeverity::ERROR, false) => style.invalid_error_diagnostic.clone(),
4741 (DiagnosticSeverity::WARNING, true) => style.warning_diagnostic.clone(),
4742 (DiagnosticSeverity::WARNING, false) => style.invalid_warning_diagnostic.clone(),
4743 (DiagnosticSeverity::INFORMATION, true) => style.information_diagnostic.clone(),
4744 (DiagnosticSeverity::INFORMATION, false) => style.invalid_information_diagnostic.clone(),
4745 (DiagnosticSeverity::HINT, true) => style.hint_diagnostic.clone(),
4746 (DiagnosticSeverity::HINT, false) => style.invalid_hint_diagnostic.clone(),
4747 _ => DiagnosticStyle {
4748 message: style.text.clone().into(),
4749 header: Default::default(),
4750 text_scale_factor: 1.,
4751 },
4752 }
4753}
4754
4755pub fn settings_builder(
4756 buffer: WeakModelHandle<MultiBuffer>,
4757 settings: watch::Receiver<workspace::Settings>,
4758) -> BuildSettings {
4759 Arc::new(move |cx| {
4760 let settings = settings.borrow();
4761 let font_cache = cx.font_cache();
4762 let font_family_id = settings.buffer_font_family;
4763 let font_family_name = cx.font_cache().family_name(font_family_id).unwrap();
4764 let font_properties = Default::default();
4765 let font_id = font_cache
4766 .select_font(font_family_id, &font_properties)
4767 .unwrap();
4768 let font_size = settings.buffer_font_size;
4769
4770 let mut theme = settings.theme.editor.clone();
4771 theme.text = TextStyle {
4772 color: theme.text.color,
4773 font_family_name,
4774 font_family_id,
4775 font_id,
4776 font_size,
4777 font_properties,
4778 underline: None,
4779 };
4780 let language = buffer.upgrade(cx).and_then(|buf| buf.read(cx).language(cx));
4781 let soft_wrap = match settings.soft_wrap(language) {
4782 workspace::settings::SoftWrap::None => SoftWrap::None,
4783 workspace::settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
4784 workspace::settings::SoftWrap::PreferredLineLength => {
4785 SoftWrap::Column(settings.preferred_line_length(language).saturating_sub(1))
4786 }
4787 };
4788
4789 EditorSettings {
4790 tab_size: settings.tab_size,
4791 soft_wrap,
4792 style: theme,
4793 }
4794 })
4795}
4796
4797pub fn combine_syntax_and_fuzzy_match_highlights(
4798 text: &str,
4799 default_style: HighlightStyle,
4800 syntax_ranges: impl Iterator<Item = (Range<usize>, HighlightStyle)>,
4801 match_indices: &[usize],
4802) -> Vec<(Range<usize>, HighlightStyle)> {
4803 let mut result = Vec::new();
4804 let mut match_indices = match_indices.iter().copied().peekable();
4805
4806 for (range, mut syntax_highlight) in syntax_ranges.chain([(usize::MAX..0, Default::default())])
4807 {
4808 syntax_highlight.font_properties.weight(Default::default());
4809
4810 // Add highlights for any fuzzy match characters before the next
4811 // syntax highlight range.
4812 while let Some(&match_index) = match_indices.peek() {
4813 if match_index >= range.start {
4814 break;
4815 }
4816 match_indices.next();
4817 let end_index = char_ix_after(match_index, text);
4818 let mut match_style = default_style;
4819 match_style.font_properties.weight(fonts::Weight::BOLD);
4820 result.push((match_index..end_index, match_style));
4821 }
4822
4823 if range.start == usize::MAX {
4824 break;
4825 }
4826
4827 // Add highlights for any fuzzy match characters within the
4828 // syntax highlight range.
4829 let mut offset = range.start;
4830 while let Some(&match_index) = match_indices.peek() {
4831 if match_index >= range.end {
4832 break;
4833 }
4834
4835 match_indices.next();
4836 if match_index > offset {
4837 result.push((offset..match_index, syntax_highlight));
4838 }
4839
4840 let mut end_index = char_ix_after(match_index, text);
4841 while let Some(&next_match_index) = match_indices.peek() {
4842 if next_match_index == end_index && next_match_index < range.end {
4843 end_index = char_ix_after(next_match_index, text);
4844 match_indices.next();
4845 } else {
4846 break;
4847 }
4848 }
4849
4850 let mut match_style = syntax_highlight;
4851 match_style.font_properties.weight(fonts::Weight::BOLD);
4852 result.push((match_index..end_index, match_style));
4853 offset = end_index;
4854 }
4855
4856 if offset < range.end {
4857 result.push((offset..range.end, syntax_highlight));
4858 }
4859 }
4860
4861 fn char_ix_after(ix: usize, text: &str) -> usize {
4862 ix + text[ix..].chars().next().unwrap().len_utf8()
4863 }
4864
4865 result
4866}
4867
4868fn styled_runs_for_completion_label<'a>(
4869 label: &'a CompletionLabel,
4870 default_color: Color,
4871 syntax_theme: &'a theme::SyntaxTheme,
4872) -> impl 'a + Iterator<Item = (Range<usize>, HighlightStyle)> {
4873 const MUTED_OPACITY: usize = 165;
4874
4875 let mut muted_default_style = HighlightStyle {
4876 color: default_color,
4877 ..Default::default()
4878 };
4879 muted_default_style.color.a = ((default_color.a as usize * MUTED_OPACITY) / 255) as u8;
4880
4881 let mut prev_end = label.filter_range.end;
4882 label
4883 .runs
4884 .iter()
4885 .enumerate()
4886 .flat_map(move |(ix, (range, highlight_id))| {
4887 let style = if let Some(style) = highlight_id.style(syntax_theme) {
4888 style
4889 } else {
4890 return Default::default();
4891 };
4892 let mut muted_style = style.clone();
4893 muted_style.color.a = ((style.color.a as usize * MUTED_OPACITY) / 255) as u8;
4894
4895 let mut runs = SmallVec::<[(Range<usize>, HighlightStyle); 3]>::new();
4896 if range.start >= label.filter_range.end {
4897 if range.start > prev_end {
4898 runs.push((prev_end..range.start, muted_default_style));
4899 }
4900 runs.push((range.clone(), muted_style));
4901 } else if range.end <= label.filter_range.end {
4902 runs.push((range.clone(), style));
4903 } else {
4904 runs.push((range.start..label.filter_range.end, style));
4905 runs.push((label.filter_range.end..range.end, muted_style));
4906 }
4907 prev_end = cmp::max(prev_end, range.end);
4908
4909 if ix + 1 == label.runs.len() && label.text.len() > prev_end {
4910 runs.push((prev_end..label.text.len(), muted_default_style));
4911 }
4912
4913 runs
4914 })
4915}
4916
4917#[cfg(test)]
4918mod tests {
4919 use super::*;
4920 use language::{FakeFile, LanguageConfig};
4921 use std::{cell::RefCell, path::Path, rc::Rc, time::Instant};
4922 use text::Point;
4923 use unindent::Unindent;
4924 use util::test::sample_text;
4925
4926 #[gpui::test]
4927 fn test_undo_redo_with_selection_restoration(cx: &mut MutableAppContext) {
4928 let mut now = Instant::now();
4929 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
4930 let group_interval = buffer.read(cx).transaction_group_interval();
4931 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
4932 let settings = EditorSettings::test(cx);
4933 let (_, editor) = cx.add_window(Default::default(), |cx| {
4934 build_editor(buffer.clone(), settings, cx)
4935 });
4936
4937 editor.update(cx, |editor, cx| {
4938 editor.start_transaction_at(now, cx);
4939 editor.select_ranges([2..4], None, cx);
4940 editor.insert("cd", cx);
4941 editor.end_transaction_at(now, cx);
4942 assert_eq!(editor.text(cx), "12cd56");
4943 assert_eq!(editor.selected_ranges(cx), vec![4..4]);
4944
4945 editor.start_transaction_at(now, cx);
4946 editor.select_ranges([4..5], None, cx);
4947 editor.insert("e", cx);
4948 editor.end_transaction_at(now, cx);
4949 assert_eq!(editor.text(cx), "12cde6");
4950 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
4951
4952 now += group_interval + Duration::from_millis(1);
4953 editor.select_ranges([2..2], None, cx);
4954
4955 // Simulate an edit in another editor
4956 buffer.update(cx, |buffer, cx| {
4957 buffer.start_transaction_at(now, cx);
4958 buffer.edit([0..1], "a", cx);
4959 buffer.edit([1..1], "b", cx);
4960 buffer.end_transaction_at(now, cx);
4961 });
4962
4963 assert_eq!(editor.text(cx), "ab2cde6");
4964 assert_eq!(editor.selected_ranges(cx), vec![3..3]);
4965
4966 // Last transaction happened past the group interval in a different editor.
4967 // Undo it individually and don't restore selections.
4968 editor.undo(&Undo, cx);
4969 assert_eq!(editor.text(cx), "12cde6");
4970 assert_eq!(editor.selected_ranges(cx), vec![2..2]);
4971
4972 // First two transactions happened within the group interval in this editor.
4973 // Undo them together and restore selections.
4974 editor.undo(&Undo, cx);
4975 editor.undo(&Undo, cx); // Undo stack is empty here, so this is a no-op.
4976 assert_eq!(editor.text(cx), "123456");
4977 assert_eq!(editor.selected_ranges(cx), vec![0..0]);
4978
4979 // Redo the first two transactions together.
4980 editor.redo(&Redo, cx);
4981 assert_eq!(editor.text(cx), "12cde6");
4982 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
4983
4984 // Redo the last transaction on its own.
4985 editor.redo(&Redo, cx);
4986 assert_eq!(editor.text(cx), "ab2cde6");
4987 assert_eq!(editor.selected_ranges(cx), vec![6..6]);
4988
4989 // Test empty transactions.
4990 editor.start_transaction_at(now, cx);
4991 editor.end_transaction_at(now, cx);
4992 editor.undo(&Undo, cx);
4993 assert_eq!(editor.text(cx), "12cde6");
4994 });
4995 }
4996
4997 #[gpui::test]
4998 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
4999 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
5000 let settings = EditorSettings::test(cx);
5001 let (_, editor) =
5002 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5003
5004 editor.update(cx, |view, cx| {
5005 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
5006 });
5007
5008 assert_eq!(
5009 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5010 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
5011 );
5012
5013 editor.update(cx, |view, cx| {
5014 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
5015 });
5016
5017 assert_eq!(
5018 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5019 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
5020 );
5021
5022 editor.update(cx, |view, cx| {
5023 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
5024 });
5025
5026 assert_eq!(
5027 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5028 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
5029 );
5030
5031 editor.update(cx, |view, cx| {
5032 view.end_selection(cx);
5033 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
5034 });
5035
5036 assert_eq!(
5037 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5038 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
5039 );
5040
5041 editor.update(cx, |view, cx| {
5042 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
5043 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
5044 });
5045
5046 assert_eq!(
5047 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5048 [
5049 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
5050 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
5051 ]
5052 );
5053
5054 editor.update(cx, |view, cx| {
5055 view.end_selection(cx);
5056 });
5057
5058 assert_eq!(
5059 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5060 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
5061 );
5062 }
5063
5064 #[gpui::test]
5065 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
5066 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
5067 let settings = EditorSettings::test(cx);
5068 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5069
5070 view.update(cx, |view, cx| {
5071 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
5072 assert_eq!(
5073 view.selected_display_ranges(cx),
5074 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
5075 );
5076 });
5077
5078 view.update(cx, |view, cx| {
5079 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
5080 assert_eq!(
5081 view.selected_display_ranges(cx),
5082 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
5083 );
5084 });
5085
5086 view.update(cx, |view, cx| {
5087 view.cancel(&Cancel, cx);
5088 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
5089 assert_eq!(
5090 view.selected_display_ranges(cx),
5091 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
5092 );
5093 });
5094 }
5095
5096 #[gpui::test]
5097 fn test_navigation_history(cx: &mut gpui::MutableAppContext) {
5098 cx.add_window(Default::default(), |cx| {
5099 use workspace::ItemView;
5100 let nav_history = Rc::new(RefCell::new(workspace::NavHistory::default()));
5101 let settings = EditorSettings::test(&cx);
5102 let buffer = MultiBuffer::build_simple(&sample_text(30, 5, 'a'), cx);
5103 let mut editor = build_editor(buffer.clone(), settings, cx);
5104 editor.nav_history = Some(ItemNavHistory::new(nav_history.clone(), &cx.handle()));
5105
5106 // Move the cursor a small distance.
5107 // Nothing is added to the navigation history.
5108 editor.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
5109 editor.select_display_ranges(&[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)], cx);
5110 assert!(nav_history.borrow_mut().pop_backward().is_none());
5111
5112 // Move the cursor a large distance.
5113 // The history can jump back to the previous position.
5114 editor.select_display_ranges(&[DisplayPoint::new(13, 0)..DisplayPoint::new(13, 3)], cx);
5115 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
5116 editor.navigate(nav_entry.data.unwrap(), cx);
5117 assert_eq!(nav_entry.item_view.id(), cx.view_id());
5118 assert_eq!(
5119 editor.selected_display_ranges(cx),
5120 &[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)]
5121 );
5122
5123 // Move the cursor a small distance via the mouse.
5124 // Nothing is added to the navigation history.
5125 editor.begin_selection(DisplayPoint::new(5, 0), false, 1, cx);
5126 editor.end_selection(cx);
5127 assert_eq!(
5128 editor.selected_display_ranges(cx),
5129 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
5130 );
5131 assert!(nav_history.borrow_mut().pop_backward().is_none());
5132
5133 // Move the cursor a large distance via the mouse.
5134 // The history can jump back to the previous position.
5135 editor.begin_selection(DisplayPoint::new(15, 0), false, 1, cx);
5136 editor.end_selection(cx);
5137 assert_eq!(
5138 editor.selected_display_ranges(cx),
5139 &[DisplayPoint::new(15, 0)..DisplayPoint::new(15, 0)]
5140 );
5141 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
5142 editor.navigate(nav_entry.data.unwrap(), cx);
5143 assert_eq!(nav_entry.item_view.id(), cx.view_id());
5144 assert_eq!(
5145 editor.selected_display_ranges(cx),
5146 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
5147 );
5148
5149 editor
5150 });
5151 }
5152
5153 #[gpui::test]
5154 fn test_cancel(cx: &mut gpui::MutableAppContext) {
5155 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
5156 let settings = EditorSettings::test(cx);
5157 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5158
5159 view.update(cx, |view, cx| {
5160 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
5161 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
5162 view.end_selection(cx);
5163
5164 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
5165 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
5166 view.end_selection(cx);
5167 assert_eq!(
5168 view.selected_display_ranges(cx),
5169 [
5170 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5171 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
5172 ]
5173 );
5174 });
5175
5176 view.update(cx, |view, cx| {
5177 view.cancel(&Cancel, cx);
5178 assert_eq!(
5179 view.selected_display_ranges(cx),
5180 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
5181 );
5182 });
5183
5184 view.update(cx, |view, cx| {
5185 view.cancel(&Cancel, cx);
5186 assert_eq!(
5187 view.selected_display_ranges(cx),
5188 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
5189 );
5190 });
5191 }
5192
5193 #[gpui::test]
5194 fn test_fold(cx: &mut gpui::MutableAppContext) {
5195 let buffer = MultiBuffer::build_simple(
5196 &"
5197 impl Foo {
5198 // Hello!
5199
5200 fn a() {
5201 1
5202 }
5203
5204 fn b() {
5205 2
5206 }
5207
5208 fn c() {
5209 3
5210 }
5211 }
5212 "
5213 .unindent(),
5214 cx,
5215 );
5216 let settings = EditorSettings::test(&cx);
5217 let (_, view) = cx.add_window(Default::default(), |cx| {
5218 build_editor(buffer.clone(), settings, cx)
5219 });
5220
5221 view.update(cx, |view, cx| {
5222 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx);
5223 view.fold(&Fold, cx);
5224 assert_eq!(
5225 view.display_text(cx),
5226 "
5227 impl Foo {
5228 // Hello!
5229
5230 fn a() {
5231 1
5232 }
5233
5234 fn b() {…
5235 }
5236
5237 fn c() {…
5238 }
5239 }
5240 "
5241 .unindent(),
5242 );
5243
5244 view.fold(&Fold, cx);
5245 assert_eq!(
5246 view.display_text(cx),
5247 "
5248 impl Foo {…
5249 }
5250 "
5251 .unindent(),
5252 );
5253
5254 view.unfold(&Unfold, cx);
5255 assert_eq!(
5256 view.display_text(cx),
5257 "
5258 impl Foo {
5259 // Hello!
5260
5261 fn a() {
5262 1
5263 }
5264
5265 fn b() {…
5266 }
5267
5268 fn c() {…
5269 }
5270 }
5271 "
5272 .unindent(),
5273 );
5274
5275 view.unfold(&Unfold, cx);
5276 assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text());
5277 });
5278 }
5279
5280 #[gpui::test]
5281 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
5282 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
5283 let settings = EditorSettings::test(&cx);
5284 let (_, view) = cx.add_window(Default::default(), |cx| {
5285 build_editor(buffer.clone(), settings, cx)
5286 });
5287
5288 buffer.update(cx, |buffer, cx| {
5289 buffer.edit(
5290 vec![
5291 Point::new(1, 0)..Point::new(1, 0),
5292 Point::new(1, 1)..Point::new(1, 1),
5293 ],
5294 "\t",
5295 cx,
5296 );
5297 });
5298
5299 view.update(cx, |view, cx| {
5300 assert_eq!(
5301 view.selected_display_ranges(cx),
5302 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
5303 );
5304
5305 view.move_down(&MoveDown, cx);
5306 assert_eq!(
5307 view.selected_display_ranges(cx),
5308 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
5309 );
5310
5311 view.move_right(&MoveRight, cx);
5312 assert_eq!(
5313 view.selected_display_ranges(cx),
5314 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
5315 );
5316
5317 view.move_left(&MoveLeft, cx);
5318 assert_eq!(
5319 view.selected_display_ranges(cx),
5320 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
5321 );
5322
5323 view.move_up(&MoveUp, cx);
5324 assert_eq!(
5325 view.selected_display_ranges(cx),
5326 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
5327 );
5328
5329 view.move_to_end(&MoveToEnd, cx);
5330 assert_eq!(
5331 view.selected_display_ranges(cx),
5332 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
5333 );
5334
5335 view.move_to_beginning(&MoveToBeginning, cx);
5336 assert_eq!(
5337 view.selected_display_ranges(cx),
5338 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
5339 );
5340
5341 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx);
5342 view.select_to_beginning(&SelectToBeginning, cx);
5343 assert_eq!(
5344 view.selected_display_ranges(cx),
5345 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
5346 );
5347
5348 view.select_to_end(&SelectToEnd, cx);
5349 assert_eq!(
5350 view.selected_display_ranges(cx),
5351 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
5352 );
5353 });
5354 }
5355
5356 #[gpui::test]
5357 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
5358 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
5359 let settings = EditorSettings::test(&cx);
5360 let (_, view) = cx.add_window(Default::default(), |cx| {
5361 build_editor(buffer.clone(), settings, cx)
5362 });
5363
5364 assert_eq!('ⓐ'.len_utf8(), 3);
5365 assert_eq!('α'.len_utf8(), 2);
5366
5367 view.update(cx, |view, cx| {
5368 view.fold_ranges(
5369 vec![
5370 Point::new(0, 6)..Point::new(0, 12),
5371 Point::new(1, 2)..Point::new(1, 4),
5372 Point::new(2, 4)..Point::new(2, 8),
5373 ],
5374 cx,
5375 );
5376 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
5377
5378 view.move_right(&MoveRight, cx);
5379 assert_eq!(
5380 view.selected_display_ranges(cx),
5381 &[empty_range(0, "ⓐ".len())]
5382 );
5383 view.move_right(&MoveRight, cx);
5384 assert_eq!(
5385 view.selected_display_ranges(cx),
5386 &[empty_range(0, "ⓐⓑ".len())]
5387 );
5388 view.move_right(&MoveRight, cx);
5389 assert_eq!(
5390 view.selected_display_ranges(cx),
5391 &[empty_range(0, "ⓐⓑ…".len())]
5392 );
5393
5394 view.move_down(&MoveDown, cx);
5395 assert_eq!(
5396 view.selected_display_ranges(cx),
5397 &[empty_range(1, "ab…".len())]
5398 );
5399 view.move_left(&MoveLeft, cx);
5400 assert_eq!(
5401 view.selected_display_ranges(cx),
5402 &[empty_range(1, "ab".len())]
5403 );
5404 view.move_left(&MoveLeft, cx);
5405 assert_eq!(
5406 view.selected_display_ranges(cx),
5407 &[empty_range(1, "a".len())]
5408 );
5409
5410 view.move_down(&MoveDown, cx);
5411 assert_eq!(
5412 view.selected_display_ranges(cx),
5413 &[empty_range(2, "α".len())]
5414 );
5415 view.move_right(&MoveRight, cx);
5416 assert_eq!(
5417 view.selected_display_ranges(cx),
5418 &[empty_range(2, "αβ".len())]
5419 );
5420 view.move_right(&MoveRight, cx);
5421 assert_eq!(
5422 view.selected_display_ranges(cx),
5423 &[empty_range(2, "αβ…".len())]
5424 );
5425 view.move_right(&MoveRight, cx);
5426 assert_eq!(
5427 view.selected_display_ranges(cx),
5428 &[empty_range(2, "αβ…ε".len())]
5429 );
5430
5431 view.move_up(&MoveUp, cx);
5432 assert_eq!(
5433 view.selected_display_ranges(cx),
5434 &[empty_range(1, "ab…e".len())]
5435 );
5436 view.move_up(&MoveUp, cx);
5437 assert_eq!(
5438 view.selected_display_ranges(cx),
5439 &[empty_range(0, "ⓐⓑ…ⓔ".len())]
5440 );
5441 view.move_left(&MoveLeft, cx);
5442 assert_eq!(
5443 view.selected_display_ranges(cx),
5444 &[empty_range(0, "ⓐⓑ…".len())]
5445 );
5446 view.move_left(&MoveLeft, cx);
5447 assert_eq!(
5448 view.selected_display_ranges(cx),
5449 &[empty_range(0, "ⓐⓑ".len())]
5450 );
5451 view.move_left(&MoveLeft, cx);
5452 assert_eq!(
5453 view.selected_display_ranges(cx),
5454 &[empty_range(0, "ⓐ".len())]
5455 );
5456 });
5457 }
5458
5459 #[gpui::test]
5460 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
5461 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
5462 let settings = EditorSettings::test(&cx);
5463 let (_, view) = cx.add_window(Default::default(), |cx| {
5464 build_editor(buffer.clone(), settings, cx)
5465 });
5466 view.update(cx, |view, cx| {
5467 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx);
5468 view.move_down(&MoveDown, cx);
5469 assert_eq!(
5470 view.selected_display_ranges(cx),
5471 &[empty_range(1, "abcd".len())]
5472 );
5473
5474 view.move_down(&MoveDown, cx);
5475 assert_eq!(
5476 view.selected_display_ranges(cx),
5477 &[empty_range(2, "αβγ".len())]
5478 );
5479
5480 view.move_down(&MoveDown, cx);
5481 assert_eq!(
5482 view.selected_display_ranges(cx),
5483 &[empty_range(3, "abcd".len())]
5484 );
5485
5486 view.move_down(&MoveDown, cx);
5487 assert_eq!(
5488 view.selected_display_ranges(cx),
5489 &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
5490 );
5491
5492 view.move_up(&MoveUp, cx);
5493 assert_eq!(
5494 view.selected_display_ranges(cx),
5495 &[empty_range(3, "abcd".len())]
5496 );
5497
5498 view.move_up(&MoveUp, cx);
5499 assert_eq!(
5500 view.selected_display_ranges(cx),
5501 &[empty_range(2, "αβγ".len())]
5502 );
5503 });
5504 }
5505
5506 #[gpui::test]
5507 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
5508 let buffer = MultiBuffer::build_simple("abc\n def", cx);
5509 let settings = EditorSettings::test(&cx);
5510 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5511 view.update(cx, |view, cx| {
5512 view.select_display_ranges(
5513 &[
5514 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5515 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
5516 ],
5517 cx,
5518 );
5519 });
5520
5521 view.update(cx, |view, cx| {
5522 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
5523 assert_eq!(
5524 view.selected_display_ranges(cx),
5525 &[
5526 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5527 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5528 ]
5529 );
5530 });
5531
5532 view.update(cx, |view, cx| {
5533 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
5534 assert_eq!(
5535 view.selected_display_ranges(cx),
5536 &[
5537 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5538 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5539 ]
5540 );
5541 });
5542
5543 view.update(cx, |view, cx| {
5544 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
5545 assert_eq!(
5546 view.selected_display_ranges(cx),
5547 &[
5548 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5549 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5550 ]
5551 );
5552 });
5553
5554 view.update(cx, |view, cx| {
5555 view.move_to_end_of_line(&MoveToEndOfLine, cx);
5556 assert_eq!(
5557 view.selected_display_ranges(cx),
5558 &[
5559 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5560 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
5561 ]
5562 );
5563 });
5564
5565 // Moving to the end of line again is a no-op.
5566 view.update(cx, |view, cx| {
5567 view.move_to_end_of_line(&MoveToEndOfLine, cx);
5568 assert_eq!(
5569 view.selected_display_ranges(cx),
5570 &[
5571 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5572 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
5573 ]
5574 );
5575 });
5576
5577 view.update(cx, |view, cx| {
5578 view.move_left(&MoveLeft, cx);
5579 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
5580 assert_eq!(
5581 view.selected_display_ranges(cx),
5582 &[
5583 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
5584 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
5585 ]
5586 );
5587 });
5588
5589 view.update(cx, |view, cx| {
5590 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
5591 assert_eq!(
5592 view.selected_display_ranges(cx),
5593 &[
5594 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
5595 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
5596 ]
5597 );
5598 });
5599
5600 view.update(cx, |view, cx| {
5601 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
5602 assert_eq!(
5603 view.selected_display_ranges(cx),
5604 &[
5605 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
5606 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
5607 ]
5608 );
5609 });
5610
5611 view.update(cx, |view, cx| {
5612 view.select_to_end_of_line(&SelectToEndOfLine, cx);
5613 assert_eq!(
5614 view.selected_display_ranges(cx),
5615 &[
5616 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
5617 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
5618 ]
5619 );
5620 });
5621
5622 view.update(cx, |view, cx| {
5623 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
5624 assert_eq!(view.display_text(cx), "ab\n de");
5625 assert_eq!(
5626 view.selected_display_ranges(cx),
5627 &[
5628 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5629 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
5630 ]
5631 );
5632 });
5633
5634 view.update(cx, |view, cx| {
5635 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
5636 assert_eq!(view.display_text(cx), "\n");
5637 assert_eq!(
5638 view.selected_display_ranges(cx),
5639 &[
5640 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5641 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5642 ]
5643 );
5644 });
5645 }
5646
5647 #[gpui::test]
5648 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
5649 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
5650 let settings = EditorSettings::test(&cx);
5651 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5652 view.update(cx, |view, cx| {
5653 view.select_display_ranges(
5654 &[
5655 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
5656 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
5657 ],
5658 cx,
5659 );
5660 });
5661
5662 view.update(cx, |view, cx| {
5663 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5664 assert_eq!(
5665 view.selected_display_ranges(cx),
5666 &[
5667 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
5668 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
5669 ]
5670 );
5671 });
5672
5673 view.update(cx, |view, cx| {
5674 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5675 assert_eq!(
5676 view.selected_display_ranges(cx),
5677 &[
5678 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
5679 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2),
5680 ]
5681 );
5682 });
5683
5684 view.update(cx, |view, cx| {
5685 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5686 assert_eq!(
5687 view.selected_display_ranges(cx),
5688 &[
5689 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
5690 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
5691 ]
5692 );
5693 });
5694
5695 view.update(cx, |view, cx| {
5696 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5697 assert_eq!(
5698 view.selected_display_ranges(cx),
5699 &[
5700 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5701 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5702 ]
5703 );
5704 });
5705
5706 view.update(cx, |view, cx| {
5707 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5708 assert_eq!(
5709 view.selected_display_ranges(cx),
5710 &[
5711 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5712 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 23),
5713 ]
5714 );
5715 });
5716
5717 view.update(cx, |view, cx| {
5718 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5719 assert_eq!(
5720 view.selected_display_ranges(cx),
5721 &[
5722 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5723 DisplayPoint::new(0, 24)..DisplayPoint::new(0, 24),
5724 ]
5725 );
5726 });
5727
5728 view.update(cx, |view, cx| {
5729 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5730 assert_eq!(
5731 view.selected_display_ranges(cx),
5732 &[
5733 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
5734 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5735 ]
5736 );
5737 });
5738
5739 view.update(cx, |view, cx| {
5740 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5741 assert_eq!(
5742 view.selected_display_ranges(cx),
5743 &[
5744 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
5745 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
5746 ]
5747 );
5748 });
5749
5750 view.update(cx, |view, cx| {
5751 view.move_right(&MoveRight, cx);
5752 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
5753 assert_eq!(
5754 view.selected_display_ranges(cx),
5755 &[
5756 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
5757 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
5758 ]
5759 );
5760 });
5761
5762 view.update(cx, |view, cx| {
5763 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
5764 assert_eq!(
5765 view.selected_display_ranges(cx),
5766 &[
5767 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 7),
5768 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 2),
5769 ]
5770 );
5771 });
5772
5773 view.update(cx, |view, cx| {
5774 view.select_to_next_word_boundary(&SelectToNextWordBoundary, cx);
5775 assert_eq!(
5776 view.selected_display_ranges(cx),
5777 &[
5778 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
5779 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
5780 ]
5781 );
5782 });
5783 }
5784
5785 #[gpui::test]
5786 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
5787 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
5788 let settings = EditorSettings::test(&cx);
5789 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5790
5791 view.update(cx, |view, cx| {
5792 view.set_wrap_width(Some(140.), cx);
5793 assert_eq!(
5794 view.display_text(cx),
5795 "use one::{\n two::three::\n four::five\n};"
5796 );
5797
5798 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx);
5799
5800 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5801 assert_eq!(
5802 view.selected_display_ranges(cx),
5803 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
5804 );
5805
5806 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5807 assert_eq!(
5808 view.selected_display_ranges(cx),
5809 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
5810 );
5811
5812 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5813 assert_eq!(
5814 view.selected_display_ranges(cx),
5815 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
5816 );
5817
5818 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5819 assert_eq!(
5820 view.selected_display_ranges(cx),
5821 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
5822 );
5823
5824 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5825 assert_eq!(
5826 view.selected_display_ranges(cx),
5827 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
5828 );
5829
5830 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5831 assert_eq!(
5832 view.selected_display_ranges(cx),
5833 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
5834 );
5835 });
5836 }
5837
5838 #[gpui::test]
5839 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
5840 let buffer = MultiBuffer::build_simple("one two three four", cx);
5841 let settings = EditorSettings::test(&cx);
5842 let (_, view) = cx.add_window(Default::default(), |cx| {
5843 build_editor(buffer.clone(), settings, cx)
5844 });
5845
5846 view.update(cx, |view, cx| {
5847 view.select_display_ranges(
5848 &[
5849 // an empty selection - the preceding word fragment is deleted
5850 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5851 // characters selected - they are deleted
5852 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
5853 ],
5854 cx,
5855 );
5856 view.delete_to_previous_word_boundary(&DeleteToPreviousWordBoundary, cx);
5857 });
5858
5859 assert_eq!(buffer.read(cx).read(cx).text(), "e two te four");
5860
5861 view.update(cx, |view, cx| {
5862 view.select_display_ranges(
5863 &[
5864 // an empty selection - the following word fragment is deleted
5865 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5866 // characters selected - they are deleted
5867 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
5868 ],
5869 cx,
5870 );
5871 view.delete_to_next_word_boundary(&DeleteToNextWordBoundary, cx);
5872 });
5873
5874 assert_eq!(buffer.read(cx).read(cx).text(), "e t te our");
5875 }
5876
5877 #[gpui::test]
5878 fn test_newline(cx: &mut gpui::MutableAppContext) {
5879 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
5880 let settings = EditorSettings::test(&cx);
5881 let (_, view) = cx.add_window(Default::default(), |cx| {
5882 build_editor(buffer.clone(), settings, cx)
5883 });
5884
5885 view.update(cx, |view, cx| {
5886 view.select_display_ranges(
5887 &[
5888 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5889 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5890 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
5891 ],
5892 cx,
5893 );
5894
5895 view.newline(&Newline, cx);
5896 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
5897 });
5898 }
5899
5900 #[gpui::test]
5901 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
5902 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
5903 let settings = EditorSettings::test(&cx);
5904 let (_, view) = cx.add_window(Default::default(), |cx| {
5905 build_editor(buffer.clone(), settings, cx)
5906 });
5907
5908 view.update(cx, |view, cx| {
5909 // two selections on the same line
5910 view.select_display_ranges(
5911 &[
5912 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
5913 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
5914 ],
5915 cx,
5916 );
5917
5918 // indent from mid-tabstop to full tabstop
5919 view.tab(&Tab, cx);
5920 assert_eq!(view.text(cx), " one two\nthree\n four");
5921 assert_eq!(
5922 view.selected_display_ranges(cx),
5923 &[
5924 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
5925 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
5926 ]
5927 );
5928
5929 // outdent from 1 tabstop to 0 tabstops
5930 view.outdent(&Outdent, cx);
5931 assert_eq!(view.text(cx), "one two\nthree\n four");
5932 assert_eq!(
5933 view.selected_display_ranges(cx),
5934 &[
5935 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
5936 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
5937 ]
5938 );
5939
5940 // select across line ending
5941 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx);
5942
5943 // indent and outdent affect only the preceding line
5944 view.tab(&Tab, cx);
5945 assert_eq!(view.text(cx), "one two\n three\n four");
5946 assert_eq!(
5947 view.selected_display_ranges(cx),
5948 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
5949 );
5950 view.outdent(&Outdent, cx);
5951 assert_eq!(view.text(cx), "one two\nthree\n four");
5952 assert_eq!(
5953 view.selected_display_ranges(cx),
5954 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
5955 );
5956
5957 // Ensure that indenting/outdenting works when the cursor is at column 0.
5958 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
5959 view.tab(&Tab, cx);
5960 assert_eq!(view.text(cx), "one two\n three\n four");
5961 assert_eq!(
5962 view.selected_display_ranges(cx),
5963 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
5964 );
5965
5966 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
5967 view.outdent(&Outdent, cx);
5968 assert_eq!(view.text(cx), "one two\nthree\n four");
5969 assert_eq!(
5970 view.selected_display_ranges(cx),
5971 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
5972 );
5973 });
5974 }
5975
5976 #[gpui::test]
5977 fn test_backspace(cx: &mut gpui::MutableAppContext) {
5978 let buffer =
5979 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
5980 let settings = EditorSettings::test(&cx);
5981 let (_, view) = cx.add_window(Default::default(), |cx| {
5982 build_editor(buffer.clone(), settings, cx)
5983 });
5984
5985 view.update(cx, |view, cx| {
5986 view.select_display_ranges(
5987 &[
5988 // an empty selection - the preceding character is deleted
5989 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5990 // one character selected - it is deleted
5991 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
5992 // a line suffix selected - it is deleted
5993 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
5994 ],
5995 cx,
5996 );
5997 view.backspace(&Backspace, cx);
5998 });
5999
6000 assert_eq!(
6001 buffer.read(cx).read(cx).text(),
6002 "oe two three\nfou five six\nseven ten\n"
6003 );
6004 }
6005
6006 #[gpui::test]
6007 fn test_delete(cx: &mut gpui::MutableAppContext) {
6008 let buffer =
6009 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
6010 let settings = EditorSettings::test(&cx);
6011 let (_, view) = cx.add_window(Default::default(), |cx| {
6012 build_editor(buffer.clone(), settings, cx)
6013 });
6014
6015 view.update(cx, |view, cx| {
6016 view.select_display_ranges(
6017 &[
6018 // an empty selection - the following character is deleted
6019 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6020 // one character selected - it is deleted
6021 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
6022 // a line suffix selected - it is deleted
6023 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
6024 ],
6025 cx,
6026 );
6027 view.delete(&Delete, cx);
6028 });
6029
6030 assert_eq!(
6031 buffer.read(cx).read(cx).text(),
6032 "on two three\nfou five six\nseven ten\n"
6033 );
6034 }
6035
6036 #[gpui::test]
6037 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
6038 let settings = EditorSettings::test(&cx);
6039 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
6040 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6041 view.update(cx, |view, cx| {
6042 view.select_display_ranges(
6043 &[
6044 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6045 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
6046 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6047 ],
6048 cx,
6049 );
6050 view.delete_line(&DeleteLine, cx);
6051 assert_eq!(view.display_text(cx), "ghi");
6052 assert_eq!(
6053 view.selected_display_ranges(cx),
6054 vec![
6055 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6056 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
6057 ]
6058 );
6059 });
6060
6061 let settings = EditorSettings::test(&cx);
6062 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
6063 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6064 view.update(cx, |view, cx| {
6065 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx);
6066 view.delete_line(&DeleteLine, cx);
6067 assert_eq!(view.display_text(cx), "ghi\n");
6068 assert_eq!(
6069 view.selected_display_ranges(cx),
6070 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
6071 );
6072 });
6073 }
6074
6075 #[gpui::test]
6076 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
6077 let settings = EditorSettings::test(&cx);
6078 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
6079 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6080 view.update(cx, |view, cx| {
6081 view.select_display_ranges(
6082 &[
6083 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
6084 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6085 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6086 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6087 ],
6088 cx,
6089 );
6090 view.duplicate_line(&DuplicateLine, cx);
6091 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
6092 assert_eq!(
6093 view.selected_display_ranges(cx),
6094 vec![
6095 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
6096 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6097 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6098 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
6099 ]
6100 );
6101 });
6102
6103 let settings = EditorSettings::test(&cx);
6104 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
6105 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6106 view.update(cx, |view, cx| {
6107 view.select_display_ranges(
6108 &[
6109 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
6110 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
6111 ],
6112 cx,
6113 );
6114 view.duplicate_line(&DuplicateLine, cx);
6115 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
6116 assert_eq!(
6117 view.selected_display_ranges(cx),
6118 vec![
6119 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
6120 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
6121 ]
6122 );
6123 });
6124 }
6125
6126 #[gpui::test]
6127 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
6128 let settings = EditorSettings::test(&cx);
6129 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
6130 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6131 view.update(cx, |view, cx| {
6132 view.fold_ranges(
6133 vec![
6134 Point::new(0, 2)..Point::new(1, 2),
6135 Point::new(2, 3)..Point::new(4, 1),
6136 Point::new(7, 0)..Point::new(8, 4),
6137 ],
6138 cx,
6139 );
6140 view.select_display_ranges(
6141 &[
6142 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6143 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
6144 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
6145 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
6146 ],
6147 cx,
6148 );
6149 assert_eq!(
6150 view.display_text(cx),
6151 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
6152 );
6153
6154 view.move_line_up(&MoveLineUp, cx);
6155 assert_eq!(
6156 view.display_text(cx),
6157 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
6158 );
6159 assert_eq!(
6160 view.selected_display_ranges(cx),
6161 vec![
6162 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6163 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6164 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
6165 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
6166 ]
6167 );
6168 });
6169
6170 view.update(cx, |view, cx| {
6171 view.move_line_down(&MoveLineDown, cx);
6172 assert_eq!(
6173 view.display_text(cx),
6174 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
6175 );
6176 assert_eq!(
6177 view.selected_display_ranges(cx),
6178 vec![
6179 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6180 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
6181 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
6182 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
6183 ]
6184 );
6185 });
6186
6187 view.update(cx, |view, cx| {
6188 view.move_line_down(&MoveLineDown, cx);
6189 assert_eq!(
6190 view.display_text(cx),
6191 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
6192 );
6193 assert_eq!(
6194 view.selected_display_ranges(cx),
6195 vec![
6196 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6197 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
6198 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
6199 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
6200 ]
6201 );
6202 });
6203
6204 view.update(cx, |view, cx| {
6205 view.move_line_up(&MoveLineUp, cx);
6206 assert_eq!(
6207 view.display_text(cx),
6208 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
6209 );
6210 assert_eq!(
6211 view.selected_display_ranges(cx),
6212 vec![
6213 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6214 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6215 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
6216 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
6217 ]
6218 );
6219 });
6220 }
6221
6222 #[gpui::test]
6223 fn test_move_line_up_down_with_blocks(cx: &mut gpui::MutableAppContext) {
6224 let settings = EditorSettings::test(&cx);
6225 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
6226 let snapshot = buffer.read(cx).snapshot(cx);
6227 let (_, editor) =
6228 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6229 editor.update(cx, |editor, cx| {
6230 editor.insert_blocks(
6231 [BlockProperties {
6232 position: snapshot.anchor_after(Point::new(2, 0)),
6233 disposition: BlockDisposition::Below,
6234 height: 1,
6235 render: Arc::new(|_| Empty::new().boxed()),
6236 }],
6237 cx,
6238 );
6239 editor.select_ranges([Point::new(2, 0)..Point::new(2, 0)], None, cx);
6240 editor.move_line_down(&MoveLineDown, cx);
6241 });
6242 }
6243
6244 #[gpui::test]
6245 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
6246 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
6247 let settings = EditorSettings::test(&cx);
6248 let view = cx
6249 .add_window(Default::default(), |cx| {
6250 build_editor(buffer.clone(), settings, cx)
6251 })
6252 .1;
6253
6254 // Cut with three selections. Clipboard text is divided into three slices.
6255 view.update(cx, |view, cx| {
6256 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
6257 view.cut(&Cut, cx);
6258 assert_eq!(view.display_text(cx), "two four six ");
6259 });
6260
6261 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
6262 view.update(cx, |view, cx| {
6263 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
6264 view.paste(&Paste, cx);
6265 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
6266 assert_eq!(
6267 view.selected_display_ranges(cx),
6268 &[
6269 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
6270 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
6271 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
6272 ]
6273 );
6274 });
6275
6276 // Paste again but with only two cursors. Since the number of cursors doesn't
6277 // match the number of slices in the clipboard, the entire clipboard text
6278 // is pasted at each cursor.
6279 view.update(cx, |view, cx| {
6280 view.select_ranges(vec![0..0, 31..31], None, cx);
6281 view.handle_input(&Input("( ".into()), cx);
6282 view.paste(&Paste, cx);
6283 view.handle_input(&Input(") ".into()), cx);
6284 assert_eq!(
6285 view.display_text(cx),
6286 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
6287 );
6288 });
6289
6290 view.update(cx, |view, cx| {
6291 view.select_ranges(vec![0..0], None, cx);
6292 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
6293 assert_eq!(
6294 view.display_text(cx),
6295 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
6296 );
6297 });
6298
6299 // Cut with three selections, one of which is full-line.
6300 view.update(cx, |view, cx| {
6301 view.select_display_ranges(
6302 &[
6303 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
6304 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6305 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
6306 ],
6307 cx,
6308 );
6309 view.cut(&Cut, cx);
6310 assert_eq!(
6311 view.display_text(cx),
6312 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
6313 );
6314 });
6315
6316 // Paste with three selections, noticing how the copied selection that was full-line
6317 // gets inserted before the second cursor.
6318 view.update(cx, |view, cx| {
6319 view.select_display_ranges(
6320 &[
6321 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6322 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6323 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
6324 ],
6325 cx,
6326 );
6327 view.paste(&Paste, cx);
6328 assert_eq!(
6329 view.display_text(cx),
6330 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
6331 );
6332 assert_eq!(
6333 view.selected_display_ranges(cx),
6334 &[
6335 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6336 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6337 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
6338 ]
6339 );
6340 });
6341
6342 // Copy with a single cursor only, which writes the whole line into the clipboard.
6343 view.update(cx, |view, cx| {
6344 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx);
6345 view.copy(&Copy, cx);
6346 });
6347
6348 // Paste with three selections, noticing how the copied full-line selection is inserted
6349 // before the empty selections but replaces the selection that is non-empty.
6350 view.update(cx, |view, cx| {
6351 view.select_display_ranges(
6352 &[
6353 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6354 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
6355 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6356 ],
6357 cx,
6358 );
6359 view.paste(&Paste, cx);
6360 assert_eq!(
6361 view.display_text(cx),
6362 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
6363 );
6364 assert_eq!(
6365 view.selected_display_ranges(cx),
6366 &[
6367 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6368 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6369 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
6370 ]
6371 );
6372 });
6373 }
6374
6375 #[gpui::test]
6376 fn test_select_all(cx: &mut gpui::MutableAppContext) {
6377 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
6378 let settings = EditorSettings::test(&cx);
6379 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6380 view.update(cx, |view, cx| {
6381 view.select_all(&SelectAll, cx);
6382 assert_eq!(
6383 view.selected_display_ranges(cx),
6384 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
6385 );
6386 });
6387 }
6388
6389 #[gpui::test]
6390 fn test_select_line(cx: &mut gpui::MutableAppContext) {
6391 let settings = EditorSettings::test(&cx);
6392 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
6393 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6394 view.update(cx, |view, cx| {
6395 view.select_display_ranges(
6396 &[
6397 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
6398 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6399 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6400 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
6401 ],
6402 cx,
6403 );
6404 view.select_line(&SelectLine, cx);
6405 assert_eq!(
6406 view.selected_display_ranges(cx),
6407 vec![
6408 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
6409 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
6410 ]
6411 );
6412 });
6413
6414 view.update(cx, |view, cx| {
6415 view.select_line(&SelectLine, cx);
6416 assert_eq!(
6417 view.selected_display_ranges(cx),
6418 vec![
6419 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
6420 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
6421 ]
6422 );
6423 });
6424
6425 view.update(cx, |view, cx| {
6426 view.select_line(&SelectLine, cx);
6427 assert_eq!(
6428 view.selected_display_ranges(cx),
6429 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
6430 );
6431 });
6432 }
6433
6434 #[gpui::test]
6435 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
6436 let settings = EditorSettings::test(&cx);
6437 let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
6438 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6439 view.update(cx, |view, cx| {
6440 view.fold_ranges(
6441 vec![
6442 Point::new(0, 2)..Point::new(1, 2),
6443 Point::new(2, 3)..Point::new(4, 1),
6444 Point::new(7, 0)..Point::new(8, 4),
6445 ],
6446 cx,
6447 );
6448 view.select_display_ranges(
6449 &[
6450 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
6451 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6452 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6453 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
6454 ],
6455 cx,
6456 );
6457 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
6458 });
6459
6460 view.update(cx, |view, cx| {
6461 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
6462 assert_eq!(
6463 view.display_text(cx),
6464 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
6465 );
6466 assert_eq!(
6467 view.selected_display_ranges(cx),
6468 [
6469 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6470 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6471 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
6472 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
6473 ]
6474 );
6475 });
6476
6477 view.update(cx, |view, cx| {
6478 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx);
6479 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
6480 assert_eq!(
6481 view.display_text(cx),
6482 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
6483 );
6484 assert_eq!(
6485 view.selected_display_ranges(cx),
6486 [
6487 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
6488 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6489 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
6490 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
6491 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
6492 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
6493 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
6494 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
6495 ]
6496 );
6497 });
6498 }
6499
6500 #[gpui::test]
6501 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
6502 let settings = EditorSettings::test(&cx);
6503 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
6504 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6505
6506 view.update(cx, |view, cx| {
6507 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx);
6508 });
6509 view.update(cx, |view, cx| {
6510 view.add_selection_above(&AddSelectionAbove, cx);
6511 assert_eq!(
6512 view.selected_display_ranges(cx),
6513 vec![
6514 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6515 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
6516 ]
6517 );
6518 });
6519
6520 view.update(cx, |view, cx| {
6521 view.add_selection_above(&AddSelectionAbove, cx);
6522 assert_eq!(
6523 view.selected_display_ranges(cx),
6524 vec![
6525 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6526 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
6527 ]
6528 );
6529 });
6530
6531 view.update(cx, |view, cx| {
6532 view.add_selection_below(&AddSelectionBelow, cx);
6533 assert_eq!(
6534 view.selected_display_ranges(cx),
6535 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
6536 );
6537 });
6538
6539 view.update(cx, |view, cx| {
6540 view.add_selection_below(&AddSelectionBelow, cx);
6541 assert_eq!(
6542 view.selected_display_ranges(cx),
6543 vec![
6544 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
6545 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
6546 ]
6547 );
6548 });
6549
6550 view.update(cx, |view, cx| {
6551 view.add_selection_below(&AddSelectionBelow, cx);
6552 assert_eq!(
6553 view.selected_display_ranges(cx),
6554 vec![
6555 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
6556 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
6557 ]
6558 );
6559 });
6560
6561 view.update(cx, |view, cx| {
6562 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx);
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, 4)..DisplayPoint::new(1, 3),
6570 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
6571 ]
6572 );
6573 });
6574
6575 view.update(cx, |view, cx| {
6576 view.add_selection_below(&AddSelectionBelow, cx);
6577 assert_eq!(
6578 view.selected_display_ranges(cx),
6579 vec![
6580 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
6581 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
6582 ]
6583 );
6584 });
6585
6586 view.update(cx, |view, cx| {
6587 view.add_selection_above(&AddSelectionAbove, cx);
6588 assert_eq!(
6589 view.selected_display_ranges(cx),
6590 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
6591 );
6592 });
6593
6594 view.update(cx, |view, cx| {
6595 view.add_selection_above(&AddSelectionAbove, cx);
6596 assert_eq!(
6597 view.selected_display_ranges(cx),
6598 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
6599 );
6600 });
6601
6602 view.update(cx, |view, cx| {
6603 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx);
6604 view.add_selection_below(&AddSelectionBelow, cx);
6605 assert_eq!(
6606 view.selected_display_ranges(cx),
6607 vec![
6608 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
6609 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
6610 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
6611 ]
6612 );
6613 });
6614
6615 view.update(cx, |view, cx| {
6616 view.add_selection_below(&AddSelectionBelow, cx);
6617 assert_eq!(
6618 view.selected_display_ranges(cx),
6619 vec![
6620 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
6621 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
6622 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
6623 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
6624 ]
6625 );
6626 });
6627
6628 view.update(cx, |view, cx| {
6629 view.add_selection_above(&AddSelectionAbove, cx);
6630 assert_eq!(
6631 view.selected_display_ranges(cx),
6632 vec![
6633 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
6634 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
6635 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
6636 ]
6637 );
6638 });
6639
6640 view.update(cx, |view, cx| {
6641 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx);
6642 });
6643 view.update(cx, |view, cx| {
6644 view.add_selection_above(&AddSelectionAbove, cx);
6645 assert_eq!(
6646 view.selected_display_ranges(cx),
6647 vec![
6648 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
6649 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
6650 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
6651 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
6652 ]
6653 );
6654 });
6655
6656 view.update(cx, |view, cx| {
6657 view.add_selection_below(&AddSelectionBelow, cx);
6658 assert_eq!(
6659 view.selected_display_ranges(cx),
6660 vec![
6661 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
6662 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
6663 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
6664 ]
6665 );
6666 });
6667 }
6668
6669 #[gpui::test]
6670 async fn test_select_larger_smaller_syntax_node(mut cx: gpui::TestAppContext) {
6671 let settings = cx.read(EditorSettings::test);
6672 let language = Arc::new(Language::new(
6673 LanguageConfig::default(),
6674 Some(tree_sitter_rust::language()),
6675 ));
6676
6677 let text = r#"
6678 use mod1::mod2::{mod3, mod4};
6679
6680 fn fn_1(param1: bool, param2: &str) {
6681 let var1 = "text";
6682 }
6683 "#
6684 .unindent();
6685
6686 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
6687 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6688 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6689 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
6690 .await;
6691
6692 view.update(&mut cx, |view, cx| {
6693 view.select_display_ranges(
6694 &[
6695 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
6696 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
6697 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
6698 ],
6699 cx,
6700 );
6701 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
6702 });
6703 assert_eq!(
6704 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6705 &[
6706 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
6707 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
6708 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
6709 ]
6710 );
6711
6712 view.update(&mut cx, |view, cx| {
6713 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
6714 });
6715 assert_eq!(
6716 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6717 &[
6718 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
6719 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
6720 ]
6721 );
6722
6723 view.update(&mut cx, |view, cx| {
6724 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
6725 });
6726 assert_eq!(
6727 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6728 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
6729 );
6730
6731 // Trying to expand the selected syntax node one more time has no effect.
6732 view.update(&mut cx, |view, cx| {
6733 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
6734 });
6735 assert_eq!(
6736 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6737 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
6738 );
6739
6740 view.update(&mut cx, |view, cx| {
6741 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
6742 });
6743 assert_eq!(
6744 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6745 &[
6746 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
6747 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
6748 ]
6749 );
6750
6751 view.update(&mut cx, |view, cx| {
6752 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
6753 });
6754 assert_eq!(
6755 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6756 &[
6757 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
6758 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
6759 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
6760 ]
6761 );
6762
6763 view.update(&mut cx, |view, cx| {
6764 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
6765 });
6766 assert_eq!(
6767 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6768 &[
6769 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
6770 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
6771 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
6772 ]
6773 );
6774
6775 // Trying to shrink the selected syntax node one more time has no effect.
6776 view.update(&mut cx, |view, cx| {
6777 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
6778 });
6779 assert_eq!(
6780 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6781 &[
6782 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
6783 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
6784 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
6785 ]
6786 );
6787
6788 // Ensure that we keep expanding the selection if the larger selection starts or ends within
6789 // a fold.
6790 view.update(&mut cx, |view, cx| {
6791 view.fold_ranges(
6792 vec![
6793 Point::new(0, 21)..Point::new(0, 24),
6794 Point::new(3, 20)..Point::new(3, 22),
6795 ],
6796 cx,
6797 );
6798 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
6799 });
6800 assert_eq!(
6801 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6802 &[
6803 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
6804 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
6805 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
6806 ]
6807 );
6808 }
6809
6810 #[gpui::test]
6811 async fn test_autoindent_selections(mut cx: gpui::TestAppContext) {
6812 let settings = cx.read(EditorSettings::test);
6813 let language = Arc::new(
6814 Language::new(
6815 LanguageConfig {
6816 brackets: vec![
6817 BracketPair {
6818 start: "{".to_string(),
6819 end: "}".to_string(),
6820 close: false,
6821 newline: true,
6822 },
6823 BracketPair {
6824 start: "(".to_string(),
6825 end: ")".to_string(),
6826 close: false,
6827 newline: true,
6828 },
6829 ],
6830 ..Default::default()
6831 },
6832 Some(tree_sitter_rust::language()),
6833 )
6834 .with_indents_query(
6835 r#"
6836 (_ "(" ")" @end) @indent
6837 (_ "{" "}" @end) @indent
6838 "#,
6839 )
6840 .unwrap(),
6841 );
6842
6843 let text = "fn a() {}";
6844
6845 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
6846 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6847 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6848 editor
6849 .condition(&cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
6850 .await;
6851
6852 editor.update(&mut cx, |editor, cx| {
6853 editor.select_ranges([5..5, 8..8, 9..9], None, cx);
6854 editor.newline(&Newline, cx);
6855 assert_eq!(editor.text(cx), "fn a(\n \n) {\n \n}\n");
6856 assert_eq!(
6857 editor.selected_ranges(cx),
6858 &[
6859 Point::new(1, 4)..Point::new(1, 4),
6860 Point::new(3, 4)..Point::new(3, 4),
6861 Point::new(5, 0)..Point::new(5, 0)
6862 ]
6863 );
6864 });
6865 }
6866
6867 #[gpui::test]
6868 async fn test_autoclose_pairs(mut cx: gpui::TestAppContext) {
6869 let settings = cx.read(EditorSettings::test);
6870 let language = Arc::new(Language::new(
6871 LanguageConfig {
6872 brackets: vec![
6873 BracketPair {
6874 start: "{".to_string(),
6875 end: "}".to_string(),
6876 close: true,
6877 newline: true,
6878 },
6879 BracketPair {
6880 start: "/*".to_string(),
6881 end: " */".to_string(),
6882 close: true,
6883 newline: true,
6884 },
6885 ],
6886 ..Default::default()
6887 },
6888 Some(tree_sitter_rust::language()),
6889 ));
6890
6891 let text = r#"
6892 a
6893
6894 /
6895
6896 "#
6897 .unindent();
6898
6899 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
6900 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6901 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6902 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
6903 .await;
6904
6905 view.update(&mut cx, |view, cx| {
6906 view.select_display_ranges(
6907 &[
6908 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
6909 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6910 ],
6911 cx,
6912 );
6913 view.handle_input(&Input("{".to_string()), cx);
6914 view.handle_input(&Input("{".to_string()), cx);
6915 view.handle_input(&Input("{".to_string()), cx);
6916 assert_eq!(
6917 view.text(cx),
6918 "
6919 {{{}}}
6920 {{{}}}
6921 /
6922
6923 "
6924 .unindent()
6925 );
6926
6927 view.move_right(&MoveRight, cx);
6928 view.handle_input(&Input("}".to_string()), cx);
6929 view.handle_input(&Input("}".to_string()), cx);
6930 view.handle_input(&Input("}".to_string()), cx);
6931 assert_eq!(
6932 view.text(cx),
6933 "
6934 {{{}}}}
6935 {{{}}}}
6936 /
6937
6938 "
6939 .unindent()
6940 );
6941
6942 view.undo(&Undo, cx);
6943 view.handle_input(&Input("/".to_string()), cx);
6944 view.handle_input(&Input("*".to_string()), cx);
6945 assert_eq!(
6946 view.text(cx),
6947 "
6948 /* */
6949 /* */
6950 /
6951
6952 "
6953 .unindent()
6954 );
6955
6956 view.undo(&Undo, cx);
6957 view.select_display_ranges(
6958 &[
6959 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6960 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6961 ],
6962 cx,
6963 );
6964 view.handle_input(&Input("*".to_string()), cx);
6965 assert_eq!(
6966 view.text(cx),
6967 "
6968 a
6969
6970 /*
6971 *
6972 "
6973 .unindent()
6974 );
6975 });
6976 }
6977
6978 #[gpui::test]
6979 async fn test_snippets(mut cx: gpui::TestAppContext) {
6980 let settings = cx.read(EditorSettings::test);
6981
6982 let text = "a. b";
6983 let buffer = cx.update(|cx| MultiBuffer::build_simple(&text, cx));
6984 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6985
6986 editor.update(&mut cx, |editor, cx| {
6987 let snippet = Snippet::parse("f(${1:one}, ${2:two})$0").unwrap();
6988 editor.insert_snippet(&[2..2], snippet, cx).unwrap();
6989 assert_eq!(editor.text(cx), "a.f(one, two) b");
6990 assert_eq!(editor.selected_ranges::<usize>(cx), &[4..7]);
6991
6992 // Can't move earlier than the first tab stop
6993 editor.move_to_prev_snippet_tabstop(cx);
6994 assert_eq!(editor.selected_ranges::<usize>(cx), &[4..7]);
6995
6996 assert!(editor.move_to_next_snippet_tabstop(cx));
6997 assert_eq!(editor.selected_ranges::<usize>(cx), &[9..12]);
6998
6999 editor.move_to_prev_snippet_tabstop(cx);
7000 assert_eq!(editor.selected_ranges::<usize>(cx), &[4..7]);
7001
7002 assert!(editor.move_to_next_snippet_tabstop(cx));
7003 assert!(editor.move_to_next_snippet_tabstop(cx));
7004 assert_eq!(editor.selected_ranges::<usize>(cx), &[13..13]);
7005
7006 // As soon as the last tab stop is reached, snippet state is gone
7007 editor.move_to_prev_snippet_tabstop(cx);
7008 assert_eq!(editor.selected_ranges::<usize>(cx), &[13..13]);
7009 });
7010 }
7011
7012 #[gpui::test]
7013 async fn test_completion(mut cx: gpui::TestAppContext) {
7014 let settings = cx.read(EditorSettings::test);
7015 let (language_server, mut fake) = lsp::LanguageServer::fake_with_capabilities(
7016 lsp::ServerCapabilities {
7017 completion_provider: Some(lsp::CompletionOptions {
7018 trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
7019 ..Default::default()
7020 }),
7021 ..Default::default()
7022 },
7023 cx.background(),
7024 )
7025 .await;
7026
7027 let text = "
7028 one
7029 two
7030 three
7031 "
7032 .unindent();
7033 let buffer = cx.add_model(|cx| {
7034 Buffer::from_file(
7035 0,
7036 text,
7037 Box::new(FakeFile {
7038 path: Arc::from(Path::new("/the/file")),
7039 }),
7040 cx,
7041 )
7042 .with_language_server(language_server, cx)
7043 });
7044 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7045 buffer.next_notification(&cx).await;
7046
7047 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7048
7049 editor.update(&mut cx, |editor, cx| {
7050 editor.select_ranges([3..3], None, cx);
7051 editor.handle_input(&Input(".".to_string()), cx);
7052 });
7053
7054 let (id, params) = fake.receive_request::<lsp::request::Completion>().await;
7055 assert_eq!(
7056 params.text_document_position.text_document.uri,
7057 lsp::Url::from_file_path("/the/file").unwrap()
7058 );
7059 assert_eq!(
7060 params.text_document_position.position,
7061 lsp::Position::new(0, 4)
7062 );
7063
7064 fake.respond(
7065 id,
7066 Some(lsp::CompletionResponse::Array(vec![
7067 lsp::CompletionItem {
7068 text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
7069 range: lsp::Range::new(lsp::Position::new(0, 4), lsp::Position::new(0, 4)),
7070 new_text: "first_completion".to_string(),
7071 })),
7072 ..Default::default()
7073 },
7074 lsp::CompletionItem {
7075 text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
7076 range: lsp::Range::new(lsp::Position::new(0, 4), lsp::Position::new(0, 4)),
7077 new_text: "second_completion".to_string(),
7078 })),
7079 ..Default::default()
7080 },
7081 ])),
7082 )
7083 .await;
7084
7085 editor.next_notification(&cx).await;
7086
7087 let apply_additional_edits = editor.update(&mut cx, |editor, cx| {
7088 editor.move_down(&MoveDown, cx);
7089 let apply_additional_edits = editor.confirm_completion(None, cx).unwrap();
7090 assert_eq!(
7091 editor.text(cx),
7092 "
7093 one.second_completion
7094 two
7095 three
7096 "
7097 .unindent()
7098 );
7099 apply_additional_edits
7100 });
7101
7102 let (id, _) = fake
7103 .receive_request::<lsp::request::ResolveCompletionItem>()
7104 .await;
7105 fake.respond(
7106 id,
7107 lsp::CompletionItem {
7108 additional_text_edits: Some(vec![lsp::TextEdit::new(
7109 lsp::Range::new(lsp::Position::new(2, 5), lsp::Position::new(2, 5)),
7110 "\nadditional edit".to_string(),
7111 )]),
7112 ..Default::default()
7113 },
7114 )
7115 .await;
7116
7117 apply_additional_edits.await.unwrap();
7118 assert_eq!(
7119 editor.read_with(&cx, |editor, cx| editor.text(cx)),
7120 "
7121 one.second_completion
7122 two
7123 three
7124 additional edit
7125 "
7126 .unindent()
7127 );
7128 }
7129
7130 #[gpui::test]
7131 async fn test_toggle_comment(mut cx: gpui::TestAppContext) {
7132 let settings = cx.read(EditorSettings::test);
7133 let language = Arc::new(Language::new(
7134 LanguageConfig {
7135 line_comment: Some("// ".to_string()),
7136 ..Default::default()
7137 },
7138 Some(tree_sitter_rust::language()),
7139 ));
7140
7141 let text = "
7142 fn a() {
7143 //b();
7144 // c();
7145 // d();
7146 }
7147 "
7148 .unindent();
7149
7150 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7151 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7152 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7153
7154 view.update(&mut cx, |editor, cx| {
7155 // If multiple selections intersect a line, the line is only
7156 // toggled once.
7157 editor.select_display_ranges(
7158 &[
7159 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
7160 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
7161 ],
7162 cx,
7163 );
7164 editor.toggle_comments(&ToggleComments, cx);
7165 assert_eq!(
7166 editor.text(cx),
7167 "
7168 fn a() {
7169 b();
7170 c();
7171 d();
7172 }
7173 "
7174 .unindent()
7175 );
7176
7177 // The comment prefix is inserted at the same column for every line
7178 // in a selection.
7179 editor.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx);
7180 editor.toggle_comments(&ToggleComments, cx);
7181 assert_eq!(
7182 editor.text(cx),
7183 "
7184 fn a() {
7185 // b();
7186 // c();
7187 // d();
7188 }
7189 "
7190 .unindent()
7191 );
7192
7193 // If a selection ends at the beginning of a line, that line is not toggled.
7194 editor.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx);
7195 editor.toggle_comments(&ToggleComments, cx);
7196 assert_eq!(
7197 editor.text(cx),
7198 "
7199 fn a() {
7200 // b();
7201 c();
7202 // d();
7203 }
7204 "
7205 .unindent()
7206 );
7207 });
7208 }
7209
7210 #[gpui::test]
7211 fn test_editing_disjoint_excerpts(cx: &mut gpui::MutableAppContext) {
7212 let settings = EditorSettings::test(cx);
7213 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
7214 let multibuffer = cx.add_model(|cx| {
7215 let mut multibuffer = MultiBuffer::new(0);
7216 multibuffer.push_excerpt(
7217 ExcerptProperties {
7218 buffer: &buffer,
7219 range: Point::new(0, 0)..Point::new(0, 4),
7220 },
7221 cx,
7222 );
7223 multibuffer.push_excerpt(
7224 ExcerptProperties {
7225 buffer: &buffer,
7226 range: Point::new(1, 0)..Point::new(1, 4),
7227 },
7228 cx,
7229 );
7230 multibuffer
7231 });
7232
7233 assert_eq!(multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb");
7234
7235 let (_, view) = cx.add_window(Default::default(), |cx| {
7236 build_editor(multibuffer, settings, cx)
7237 });
7238 view.update(cx, |view, cx| {
7239 view.select_display_ranges(
7240 &[
7241 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7242 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7243 ],
7244 cx,
7245 );
7246
7247 view.handle_input(&Input("X".to_string()), cx);
7248 assert_eq!(view.text(cx), "Xaaaa\nXbbbb");
7249 assert_eq!(
7250 view.selected_display_ranges(cx),
7251 &[
7252 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7253 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7254 ]
7255 )
7256 });
7257 }
7258
7259 #[gpui::test]
7260 fn test_editing_overlapping_excerpts(cx: &mut gpui::MutableAppContext) {
7261 let settings = EditorSettings::test(cx);
7262 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
7263 let multibuffer = cx.add_model(|cx| {
7264 let mut multibuffer = MultiBuffer::new(0);
7265 multibuffer.push_excerpt(
7266 ExcerptProperties {
7267 buffer: &buffer,
7268 range: Point::new(0, 0)..Point::new(1, 4),
7269 },
7270 cx,
7271 );
7272 multibuffer.push_excerpt(
7273 ExcerptProperties {
7274 buffer: &buffer,
7275 range: Point::new(1, 0)..Point::new(2, 4),
7276 },
7277 cx,
7278 );
7279 multibuffer
7280 });
7281
7282 assert_eq!(
7283 multibuffer.read(cx).read(cx).text(),
7284 "aaaa\nbbbb\nbbbb\ncccc"
7285 );
7286
7287 let (_, view) = cx.add_window(Default::default(), |cx| {
7288 build_editor(multibuffer, settings, cx)
7289 });
7290 view.update(cx, |view, cx| {
7291 view.select_display_ranges(
7292 &[
7293 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7294 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
7295 ],
7296 cx,
7297 );
7298
7299 view.handle_input(&Input("X".to_string()), cx);
7300 assert_eq!(view.text(cx), "aaaa\nbXbbXb\nbXbbXb\ncccc");
7301 assert_eq!(
7302 view.selected_display_ranges(cx),
7303 &[
7304 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7305 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7306 ]
7307 );
7308
7309 view.newline(&Newline, cx);
7310 assert_eq!(view.text(cx), "aaaa\nbX\nbbX\nb\nbX\nbbX\nb\ncccc");
7311 assert_eq!(
7312 view.selected_display_ranges(cx),
7313 &[
7314 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
7315 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
7316 ]
7317 );
7318 });
7319 }
7320
7321 #[gpui::test]
7322 fn test_refresh_selections(cx: &mut gpui::MutableAppContext) {
7323 let settings = EditorSettings::test(cx);
7324 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
7325 let mut excerpt1_id = None;
7326 let multibuffer = cx.add_model(|cx| {
7327 let mut multibuffer = MultiBuffer::new(0);
7328 excerpt1_id = Some(multibuffer.push_excerpt(
7329 ExcerptProperties {
7330 buffer: &buffer,
7331 range: Point::new(0, 0)..Point::new(1, 4),
7332 },
7333 cx,
7334 ));
7335 multibuffer.push_excerpt(
7336 ExcerptProperties {
7337 buffer: &buffer,
7338 range: Point::new(1, 0)..Point::new(2, 4),
7339 },
7340 cx,
7341 );
7342 multibuffer
7343 });
7344 assert_eq!(
7345 multibuffer.read(cx).read(cx).text(),
7346 "aaaa\nbbbb\nbbbb\ncccc"
7347 );
7348 let (_, editor) = cx.add_window(Default::default(), |cx| {
7349 let mut editor = build_editor(multibuffer.clone(), settings, cx);
7350 editor.select_display_ranges(
7351 &[
7352 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7353 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7354 ],
7355 cx,
7356 );
7357 editor
7358 });
7359
7360 // Refreshing selections is a no-op when excerpts haven't changed.
7361 editor.update(cx, |editor, cx| {
7362 editor.refresh_selections(cx);
7363 assert_eq!(
7364 editor.selected_display_ranges(cx),
7365 [
7366 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7367 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7368 ]
7369 );
7370 });
7371
7372 multibuffer.update(cx, |multibuffer, cx| {
7373 multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx);
7374 });
7375 editor.update(cx, |editor, cx| {
7376 // Removing an excerpt causes the first selection to become degenerate.
7377 assert_eq!(
7378 editor.selected_display_ranges(cx),
7379 [
7380 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7381 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
7382 ]
7383 );
7384
7385 // Refreshing selections will relocate the first selection to the original buffer
7386 // location.
7387 editor.refresh_selections(cx);
7388 assert_eq!(
7389 editor.selected_display_ranges(cx),
7390 [
7391 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7392 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3)
7393 ]
7394 );
7395 });
7396 }
7397
7398 #[gpui::test]
7399 async fn test_extra_newline_insertion(mut cx: gpui::TestAppContext) {
7400 let settings = cx.read(EditorSettings::test);
7401 let language = Arc::new(Language::new(
7402 LanguageConfig {
7403 brackets: vec![
7404 BracketPair {
7405 start: "{".to_string(),
7406 end: "}".to_string(),
7407 close: true,
7408 newline: true,
7409 },
7410 BracketPair {
7411 start: "/* ".to_string(),
7412 end: " */".to_string(),
7413 close: true,
7414 newline: true,
7415 },
7416 ],
7417 ..Default::default()
7418 },
7419 Some(tree_sitter_rust::language()),
7420 ));
7421
7422 let text = concat!(
7423 "{ }\n", // Suppress rustfmt
7424 " x\n", //
7425 " /* */\n", //
7426 "x\n", //
7427 "{{} }\n", //
7428 );
7429
7430 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7431 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7432 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7433 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
7434 .await;
7435
7436 view.update(&mut cx, |view, cx| {
7437 view.select_display_ranges(
7438 &[
7439 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
7440 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7441 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
7442 ],
7443 cx,
7444 );
7445 view.newline(&Newline, cx);
7446
7447 assert_eq!(
7448 view.buffer().read(cx).read(cx).text(),
7449 concat!(
7450 "{ \n", // Suppress rustfmt
7451 "\n", //
7452 "}\n", //
7453 " x\n", //
7454 " /* \n", //
7455 " \n", //
7456 " */\n", //
7457 "x\n", //
7458 "{{} \n", //
7459 "}\n", //
7460 )
7461 );
7462 });
7463 }
7464
7465 #[gpui::test]
7466 fn test_highlighted_ranges(cx: &mut gpui::MutableAppContext) {
7467 let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
7468 let settings = EditorSettings::test(&cx);
7469 let (_, editor) = cx.add_window(Default::default(), |cx| {
7470 build_editor(buffer.clone(), settings, cx)
7471 });
7472
7473 editor.update(cx, |editor, cx| {
7474 struct Type1;
7475 struct Type2;
7476
7477 let buffer = buffer.read(cx).snapshot(cx);
7478
7479 let anchor_range = |range: Range<Point>| {
7480 buffer.anchor_after(range.start)..buffer.anchor_after(range.end)
7481 };
7482
7483 editor.highlight_ranges::<Type1>(
7484 vec![
7485 anchor_range(Point::new(2, 1)..Point::new(2, 3)),
7486 anchor_range(Point::new(4, 2)..Point::new(4, 4)),
7487 anchor_range(Point::new(6, 3)..Point::new(6, 5)),
7488 anchor_range(Point::new(8, 4)..Point::new(8, 6)),
7489 ],
7490 Color::red(),
7491 cx,
7492 );
7493 editor.highlight_ranges::<Type2>(
7494 vec![
7495 anchor_range(Point::new(3, 2)..Point::new(3, 5)),
7496 anchor_range(Point::new(5, 3)..Point::new(5, 6)),
7497 anchor_range(Point::new(7, 4)..Point::new(7, 7)),
7498 anchor_range(Point::new(9, 5)..Point::new(9, 8)),
7499 ],
7500 Color::green(),
7501 cx,
7502 );
7503
7504 let snapshot = editor.snapshot(cx);
7505 let mut highlighted_ranges = editor.highlighted_ranges_in_range(
7506 anchor_range(Point::new(3, 4)..Point::new(7, 4)),
7507 &snapshot,
7508 );
7509 // Enforce a consistent ordering based on color without relying on the ordering of the
7510 // highlight's `TypeId` which is non-deterministic.
7511 highlighted_ranges.sort_unstable_by_key(|(_, color)| *color);
7512 assert_eq!(
7513 highlighted_ranges,
7514 &[
7515 (
7516 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 5),
7517 Color::green(),
7518 ),
7519 (
7520 DisplayPoint::new(5, 3)..DisplayPoint::new(5, 6),
7521 Color::green(),
7522 ),
7523 (
7524 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 4),
7525 Color::red(),
7526 ),
7527 (
7528 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
7529 Color::red(),
7530 ),
7531 ]
7532 );
7533 assert_eq!(
7534 editor.highlighted_ranges_in_range(
7535 anchor_range(Point::new(5, 6)..Point::new(6, 4)),
7536 &snapshot,
7537 ),
7538 &[(
7539 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
7540 Color::red(),
7541 )]
7542 );
7543 });
7544 }
7545
7546 #[test]
7547 fn test_combine_syntax_and_fuzzy_match_highlights() {
7548 let string = "abcdefghijklmnop";
7549 let default = HighlightStyle::default();
7550 let syntax_ranges = [
7551 (
7552 0..3,
7553 HighlightStyle {
7554 color: Color::red(),
7555 ..default
7556 },
7557 ),
7558 (
7559 4..8,
7560 HighlightStyle {
7561 color: Color::green(),
7562 ..default
7563 },
7564 ),
7565 ];
7566 let match_indices = [4, 6, 7, 8];
7567 assert_eq!(
7568 combine_syntax_and_fuzzy_match_highlights(
7569 &string,
7570 default,
7571 syntax_ranges.into_iter(),
7572 &match_indices,
7573 ),
7574 &[
7575 (
7576 0..3,
7577 HighlightStyle {
7578 color: Color::red(),
7579 ..default
7580 },
7581 ),
7582 (
7583 4..5,
7584 HighlightStyle {
7585 color: Color::green(),
7586 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
7587 ..default
7588 },
7589 ),
7590 (
7591 5..6,
7592 HighlightStyle {
7593 color: Color::green(),
7594 ..default
7595 },
7596 ),
7597 (
7598 6..8,
7599 HighlightStyle {
7600 color: Color::green(),
7601 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
7602 ..default
7603 },
7604 ),
7605 (
7606 8..9,
7607 HighlightStyle {
7608 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
7609 ..default
7610 },
7611 ),
7612 ]
7613 );
7614 }
7615
7616 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
7617 let point = DisplayPoint::new(row as u32, column as u32);
7618 point..point
7619 }
7620
7621 fn build_editor(
7622 buffer: ModelHandle<MultiBuffer>,
7623 settings: EditorSettings,
7624 cx: &mut ViewContext<Editor>,
7625 ) -> Editor {
7626 Editor::for_buffer(buffer, Arc::new(move |_| settings.clone()), cx)
7627 }
7628}
7629
7630trait RangeExt<T> {
7631 fn sorted(&self) -> Range<T>;
7632 fn to_inclusive(&self) -> RangeInclusive<T>;
7633}
7634
7635impl<T: Ord + Clone> RangeExt<T> for Range<T> {
7636 fn sorted(&self) -> Self {
7637 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
7638 }
7639
7640 fn to_inclusive(&self) -> RangeInclusive<T> {
7641 self.start.clone()..=self.end.clone()
7642 }
7643}