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 self.start_transaction(cx);
1691 if completion.is_snippet() {
1692 self.insert_snippet(completion.old_range.clone(), &completion.new_text, cx)
1693 .log_err();
1694 } else {
1695 self.buffer.update(cx, |buffer, cx| {
1696 let snapshot = buffer.read(cx);
1697 let old_range = completion.old_range.to_offset(&snapshot);
1698 if old_range.len() != completion.new_text.len()
1699 || !snapshot.contains_str_at(old_range.start, &completion.new_text)
1700 {
1701 drop(snapshot);
1702 buffer.edit_with_autoindent([old_range], &completion.new_text, cx);
1703 }
1704 });
1705 }
1706 self.end_transaction(cx);
1707
1708 Some(self.buffer.update(cx, |buffer, cx| {
1709 buffer.apply_additional_edits_for_completion(completion.clone(), cx)
1710 }))
1711 }
1712
1713 pub fn has_completions(&self) -> bool {
1714 self.completion_state
1715 .as_ref()
1716 .map_or(false, |c| !c.matches.is_empty())
1717 }
1718
1719 pub fn render_completions(&self, cx: &AppContext) -> Option<ElementBox> {
1720 enum CompletionTag {}
1721
1722 self.completion_state.as_ref().map(|state| {
1723 let build_settings = self.build_settings.clone();
1724 let settings = build_settings(cx);
1725 let completions = state.completions.clone();
1726 let matches = state.matches.clone();
1727 let selected_item = state.selected_item;
1728 UniformList::new(
1729 state.list.clone(),
1730 matches.len(),
1731 move |range, items, cx| {
1732 let settings = build_settings(cx);
1733 let start_ix = range.start;
1734 for (ix, mat) in matches[range].iter().enumerate() {
1735 let completion = &completions[mat.candidate_id];
1736 let item_ix = start_ix + ix;
1737 items.push(
1738 MouseEventHandler::new::<CompletionTag, _, _, _>(
1739 mat.candidate_id,
1740 cx,
1741 |state, _| {
1742 let item_style = if item_ix == selected_item {
1743 settings.style.autocomplete.selected_item
1744 } else if state.hovered {
1745 settings.style.autocomplete.hovered_item
1746 } else {
1747 settings.style.autocomplete.item
1748 };
1749
1750 Text::new(
1751 completion.label.text.clone(),
1752 settings.style.text.clone(),
1753 )
1754 .with_soft_wrap(false)
1755 .with_highlights(combine_syntax_and_fuzzy_match_highlights(
1756 &completion.label.text,
1757 settings.style.text.color.into(),
1758 styled_runs_for_completion_label(
1759 &completion.label,
1760 settings.style.text.color,
1761 &settings.style.syntax,
1762 ),
1763 &mat.positions,
1764 ))
1765 .contained()
1766 .with_style(item_style)
1767 .boxed()
1768 },
1769 )
1770 .with_cursor_style(CursorStyle::PointingHand)
1771 .on_mouse_down(move |cx| {
1772 cx.dispatch_action(ConfirmCompletion(Some(item_ix)));
1773 })
1774 .boxed(),
1775 );
1776 }
1777 },
1778 )
1779 .with_width_from_item(
1780 state
1781 .matches
1782 .iter()
1783 .enumerate()
1784 .max_by_key(|(_, mat)| {
1785 state.completions[mat.candidate_id]
1786 .label
1787 .text
1788 .chars()
1789 .count()
1790 })
1791 .map(|(ix, _)| ix),
1792 )
1793 .contained()
1794 .with_style(settings.style.autocomplete.container)
1795 .boxed()
1796 })
1797 }
1798
1799 pub fn insert_snippet<S>(
1800 &mut self,
1801 range: Range<S>,
1802 text: &str,
1803 cx: &mut ViewContext<Self>,
1804 ) -> Result<()>
1805 where
1806 S: Clone + ToOffset,
1807 {
1808 let snippet = Snippet::parse(text)?;
1809 let tabstops = self.buffer.update(cx, |buffer, cx| {
1810 buffer.edit_with_autoindent([range.clone()], snippet.text, cx);
1811 let snapshot = buffer.read(cx);
1812 let start = range.start.to_offset(&snapshot);
1813 snippet
1814 .tabstops
1815 .iter()
1816 .map(|ranges| {
1817 ranges
1818 .into_iter()
1819 .map(|range| {
1820 snapshot.anchor_before(start + range.start)
1821 ..snapshot.anchor_after(start + range.end)
1822 })
1823 .collect::<Vec<_>>()
1824 })
1825 .collect::<Vec<_>>()
1826 });
1827
1828 if let Some(tabstop) = tabstops.first() {
1829 self.select_ranges(tabstop.iter().cloned(), Some(Autoscroll::Fit), cx);
1830 self.snippet_stack.push(SnippetState {
1831 active_index: 0,
1832 ranges: tabstops,
1833 });
1834 }
1835
1836 Ok(())
1837 }
1838
1839 pub fn move_to_next_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) -> bool {
1840 self.move_to_snippet_tabstop(Bias::Right, cx)
1841 }
1842
1843 pub fn move_to_prev_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) -> bool {
1844 self.move_to_snippet_tabstop(Bias::Left, cx)
1845 }
1846
1847 pub fn move_to_snippet_tabstop(&mut self, bias: Bias, cx: &mut ViewContext<Self>) -> bool {
1848 let buffer = self.buffer.read(cx).snapshot(cx);
1849 let old_selections = self.local_selections::<usize>(cx);
1850
1851 if let Some(snippet) = self.snippet_stack.last_mut() {
1852 match bias {
1853 Bias::Left => {
1854 if snippet.active_index > 0 {
1855 snippet.active_index -= 1;
1856 } else {
1857 return false;
1858 }
1859 }
1860 Bias::Right => {
1861 if snippet.active_index + 1 < snippet.ranges.len() {
1862 snippet.active_index += 1;
1863 } else {
1864 return false;
1865 }
1866 }
1867 }
1868 if let Some(current_ranges) = snippet.ranges.get(snippet.active_index) {
1869 let new_selections = old_selections
1870 .into_iter()
1871 .zip(current_ranges.iter())
1872 .map(|(selection, new_range)| {
1873 let new_range = new_range.to_offset(&buffer);
1874 Selection {
1875 id: selection.id,
1876 start: new_range.start,
1877 end: new_range.end,
1878 reversed: false,
1879 goal: SelectionGoal::None,
1880 }
1881 })
1882 .collect();
1883
1884 // Remove the snippet state when moving to the last tabstop.
1885 if snippet.active_index + 1 == snippet.ranges.len() {
1886 self.snippet_stack.pop();
1887 }
1888
1889 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1890 return true;
1891 }
1892 self.snippet_stack.pop();
1893 }
1894
1895 false
1896 }
1897
1898 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
1899 self.start_transaction(cx);
1900 self.select_all(&SelectAll, cx);
1901 self.insert("", cx);
1902 self.end_transaction(cx);
1903 }
1904
1905 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
1906 self.start_transaction(cx);
1907 let mut selections = self.local_selections::<Point>(cx);
1908 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1909 for selection in &mut selections {
1910 if selection.is_empty() {
1911 let head = selection.head().to_display_point(&display_map);
1912 let cursor = movement::left(&display_map, head)
1913 .unwrap()
1914 .to_point(&display_map);
1915 selection.set_head(cursor);
1916 selection.goal = SelectionGoal::None;
1917 }
1918 }
1919 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1920 self.insert("", cx);
1921 self.end_transaction(cx);
1922 }
1923
1924 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
1925 self.start_transaction(cx);
1926 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1927 let mut selections = self.local_selections::<Point>(cx);
1928 for selection in &mut selections {
1929 if selection.is_empty() {
1930 let head = selection.head().to_display_point(&display_map);
1931 let cursor = movement::right(&display_map, head)
1932 .unwrap()
1933 .to_point(&display_map);
1934 selection.set_head(cursor);
1935 selection.goal = SelectionGoal::None;
1936 }
1937 }
1938 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1939 self.insert(&"", cx);
1940 self.end_transaction(cx);
1941 }
1942
1943 pub fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
1944 if self.move_to_next_snippet_tabstop(cx) {
1945 return;
1946 }
1947
1948 self.start_transaction(cx);
1949 let tab_size = (self.build_settings)(cx).tab_size;
1950 let mut selections = self.local_selections::<Point>(cx);
1951 let mut last_indent = None;
1952 self.buffer.update(cx, |buffer, cx| {
1953 for selection in &mut selections {
1954 if selection.is_empty() {
1955 let char_column = buffer
1956 .read(cx)
1957 .text_for_range(Point::new(selection.start.row, 0)..selection.start)
1958 .flat_map(str::chars)
1959 .count();
1960 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
1961 buffer.edit(
1962 [selection.start..selection.start],
1963 " ".repeat(chars_to_next_tab_stop),
1964 cx,
1965 );
1966 selection.start.column += chars_to_next_tab_stop as u32;
1967 selection.end = selection.start;
1968 } else {
1969 let mut start_row = selection.start.row;
1970 let mut end_row = selection.end.row + 1;
1971
1972 // If a selection ends at the beginning of a line, don't indent
1973 // that last line.
1974 if selection.end.column == 0 {
1975 end_row -= 1;
1976 }
1977
1978 // Avoid re-indenting a row that has already been indented by a
1979 // previous selection, but still update this selection's column
1980 // to reflect that indentation.
1981 if let Some((last_indent_row, last_indent_len)) = last_indent {
1982 if last_indent_row == selection.start.row {
1983 selection.start.column += last_indent_len;
1984 start_row += 1;
1985 }
1986 if last_indent_row == selection.end.row {
1987 selection.end.column += last_indent_len;
1988 }
1989 }
1990
1991 for row in start_row..end_row {
1992 let indent_column = buffer.read(cx).indent_column_for_line(row) as usize;
1993 let columns_to_next_tab_stop = tab_size - (indent_column % tab_size);
1994 let row_start = Point::new(row, 0);
1995 buffer.edit(
1996 [row_start..row_start],
1997 " ".repeat(columns_to_next_tab_stop),
1998 cx,
1999 );
2000
2001 // Update this selection's endpoints to reflect the indentation.
2002 if row == selection.start.row {
2003 selection.start.column += columns_to_next_tab_stop as u32;
2004 }
2005 if row == selection.end.row {
2006 selection.end.column += columns_to_next_tab_stop as u32;
2007 }
2008
2009 last_indent = Some((row, columns_to_next_tab_stop as u32));
2010 }
2011 }
2012 }
2013 });
2014
2015 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2016 self.end_transaction(cx);
2017 }
2018
2019 pub fn outdent(&mut self, _: &Outdent, cx: &mut ViewContext<Self>) {
2020 if self.move_to_prev_snippet_tabstop(cx) {
2021 return;
2022 }
2023
2024 self.start_transaction(cx);
2025 let tab_size = (self.build_settings)(cx).tab_size;
2026 let selections = self.local_selections::<Point>(cx);
2027 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2028 let mut deletion_ranges = Vec::new();
2029 let mut last_outdent = None;
2030 {
2031 let buffer = self.buffer.read(cx).read(cx);
2032 for selection in &selections {
2033 let mut rows = selection.spanned_rows(false, &display_map);
2034
2035 // Avoid re-outdenting a row that has already been outdented by a
2036 // previous selection.
2037 if let Some(last_row) = last_outdent {
2038 if last_row == rows.start {
2039 rows.start += 1;
2040 }
2041 }
2042
2043 for row in rows {
2044 let column = buffer.indent_column_for_line(row) as usize;
2045 if column > 0 {
2046 let mut deletion_len = (column % tab_size) as u32;
2047 if deletion_len == 0 {
2048 deletion_len = tab_size as u32;
2049 }
2050 deletion_ranges.push(Point::new(row, 0)..Point::new(row, deletion_len));
2051 last_outdent = Some(row);
2052 }
2053 }
2054 }
2055 }
2056 self.buffer.update(cx, |buffer, cx| {
2057 buffer.edit(deletion_ranges, "", cx);
2058 });
2059
2060 self.update_selections(
2061 self.local_selections::<usize>(cx),
2062 Some(Autoscroll::Fit),
2063 cx,
2064 );
2065 self.end_transaction(cx);
2066 }
2067
2068 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
2069 self.start_transaction(cx);
2070
2071 let selections = self.local_selections::<Point>(cx);
2072 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2073 let buffer = self.buffer.read(cx).snapshot(cx);
2074
2075 let mut new_cursors = Vec::new();
2076 let mut edit_ranges = Vec::new();
2077 let mut selections = selections.iter().peekable();
2078 while let Some(selection) = selections.next() {
2079 let mut rows = selection.spanned_rows(false, &display_map);
2080 let goal_display_column = selection.head().to_display_point(&display_map).column();
2081
2082 // Accumulate contiguous regions of rows that we want to delete.
2083 while let Some(next_selection) = selections.peek() {
2084 let next_rows = next_selection.spanned_rows(false, &display_map);
2085 if next_rows.start <= rows.end {
2086 rows.end = next_rows.end;
2087 selections.next().unwrap();
2088 } else {
2089 break;
2090 }
2091 }
2092
2093 let mut edit_start = Point::new(rows.start, 0).to_offset(&buffer);
2094 let edit_end;
2095 let cursor_buffer_row;
2096 if buffer.max_point().row >= rows.end {
2097 // If there's a line after the range, delete the \n from the end of the row range
2098 // and position the cursor on the next line.
2099 edit_end = Point::new(rows.end, 0).to_offset(&buffer);
2100 cursor_buffer_row = rows.end;
2101 } else {
2102 // If there isn't a line after the range, delete the \n from the line before the
2103 // start of the row range and position the cursor there.
2104 edit_start = edit_start.saturating_sub(1);
2105 edit_end = buffer.len();
2106 cursor_buffer_row = rows.start.saturating_sub(1);
2107 }
2108
2109 let mut cursor = Point::new(cursor_buffer_row, 0).to_display_point(&display_map);
2110 *cursor.column_mut() =
2111 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
2112
2113 new_cursors.push((
2114 selection.id,
2115 buffer.anchor_after(cursor.to_point(&display_map)),
2116 ));
2117 edit_ranges.push(edit_start..edit_end);
2118 }
2119
2120 let buffer = self.buffer.update(cx, |buffer, cx| {
2121 buffer.edit(edit_ranges, "", cx);
2122 buffer.snapshot(cx)
2123 });
2124 let new_selections = new_cursors
2125 .into_iter()
2126 .map(|(id, cursor)| {
2127 let cursor = cursor.to_point(&buffer);
2128 Selection {
2129 id,
2130 start: cursor,
2131 end: cursor,
2132 reversed: false,
2133 goal: SelectionGoal::None,
2134 }
2135 })
2136 .collect();
2137 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2138 self.end_transaction(cx);
2139 }
2140
2141 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
2142 self.start_transaction(cx);
2143
2144 let selections = self.local_selections::<Point>(cx);
2145 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2146 let buffer = &display_map.buffer_snapshot;
2147
2148 let mut edits = Vec::new();
2149 let mut selections_iter = selections.iter().peekable();
2150 while let Some(selection) = selections_iter.next() {
2151 // Avoid duplicating the same lines twice.
2152 let mut rows = selection.spanned_rows(false, &display_map);
2153
2154 while let Some(next_selection) = selections_iter.peek() {
2155 let next_rows = next_selection.spanned_rows(false, &display_map);
2156 if next_rows.start <= rows.end - 1 {
2157 rows.end = next_rows.end;
2158 selections_iter.next().unwrap();
2159 } else {
2160 break;
2161 }
2162 }
2163
2164 // Copy the text from the selected row region and splice it at the start of the region.
2165 let start = Point::new(rows.start, 0);
2166 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
2167 let text = buffer
2168 .text_for_range(start..end)
2169 .chain(Some("\n"))
2170 .collect::<String>();
2171 edits.push((start, text, rows.len() as u32));
2172 }
2173
2174 self.buffer.update(cx, |buffer, cx| {
2175 for (point, text, _) in edits.into_iter().rev() {
2176 buffer.edit(Some(point..point), text, cx);
2177 }
2178 });
2179
2180 self.request_autoscroll(Autoscroll::Fit, cx);
2181 self.end_transaction(cx);
2182 }
2183
2184 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
2185 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2186 let buffer = self.buffer.read(cx).snapshot(cx);
2187
2188 let mut edits = Vec::new();
2189 let mut unfold_ranges = Vec::new();
2190 let mut refold_ranges = Vec::new();
2191
2192 let selections = self.local_selections::<Point>(cx);
2193 let mut selections = selections.iter().peekable();
2194 let mut contiguous_row_selections = Vec::new();
2195 let mut new_selections = Vec::new();
2196
2197 while let Some(selection) = selections.next() {
2198 // Find all the selections that span a contiguous row range
2199 contiguous_row_selections.push(selection.clone());
2200 let start_row = selection.start.row;
2201 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
2202 display_map.next_line_boundary(selection.end).0.row + 1
2203 } else {
2204 selection.end.row
2205 };
2206
2207 while let Some(next_selection) = selections.peek() {
2208 if next_selection.start.row <= end_row {
2209 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
2210 display_map.next_line_boundary(next_selection.end).0.row + 1
2211 } else {
2212 next_selection.end.row
2213 };
2214 contiguous_row_selections.push(selections.next().unwrap().clone());
2215 } else {
2216 break;
2217 }
2218 }
2219
2220 // Move the text spanned by the row range to be before the line preceding the row range
2221 if start_row > 0 {
2222 let range_to_move = Point::new(start_row - 1, buffer.line_len(start_row - 1))
2223 ..Point::new(end_row - 1, buffer.line_len(end_row - 1));
2224 let insertion_point = display_map
2225 .prev_line_boundary(Point::new(start_row - 1, 0))
2226 .0;
2227
2228 // Don't move lines across excerpts
2229 if !buffer.range_contains_excerpt_boundary(insertion_point..range_to_move.end) {
2230 let text = buffer
2231 .text_for_range(range_to_move.clone())
2232 .flat_map(|s| s.chars())
2233 .skip(1)
2234 .chain(['\n'])
2235 .collect::<String>();
2236
2237 edits.push((
2238 buffer.anchor_after(range_to_move.start)
2239 ..buffer.anchor_before(range_to_move.end),
2240 String::new(),
2241 ));
2242 let insertion_anchor = buffer.anchor_after(insertion_point);
2243 edits.push((insertion_anchor.clone()..insertion_anchor, text));
2244
2245 let row_delta = range_to_move.start.row - insertion_point.row + 1;
2246
2247 // Move selections up
2248 new_selections.extend(contiguous_row_selections.drain(..).map(
2249 |mut selection| {
2250 selection.start.row -= row_delta;
2251 selection.end.row -= row_delta;
2252 selection
2253 },
2254 ));
2255
2256 // Move folds up
2257 unfold_ranges.push(range_to_move.clone());
2258 for fold in display_map.folds_in_range(
2259 buffer.anchor_before(range_to_move.start)
2260 ..buffer.anchor_after(range_to_move.end),
2261 ) {
2262 let mut start = fold.start.to_point(&buffer);
2263 let mut end = fold.end.to_point(&buffer);
2264 start.row -= row_delta;
2265 end.row -= row_delta;
2266 refold_ranges.push(start..end);
2267 }
2268 }
2269 }
2270
2271 // If we didn't move line(s), preserve the existing selections
2272 new_selections.extend(contiguous_row_selections.drain(..));
2273 }
2274
2275 self.start_transaction(cx);
2276 self.unfold_ranges(unfold_ranges, cx);
2277 self.buffer.update(cx, |buffer, cx| {
2278 for (range, text) in edits {
2279 buffer.edit([range], text, cx);
2280 }
2281 });
2282 self.fold_ranges(refold_ranges, cx);
2283 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2284 self.end_transaction(cx);
2285 }
2286
2287 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
2288 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2289 let buffer = self.buffer.read(cx).snapshot(cx);
2290
2291 let mut edits = Vec::new();
2292 let mut unfold_ranges = Vec::new();
2293 let mut refold_ranges = Vec::new();
2294
2295 let selections = self.local_selections::<Point>(cx);
2296 let mut selections = selections.iter().peekable();
2297 let mut contiguous_row_selections = Vec::new();
2298 let mut new_selections = Vec::new();
2299
2300 while let Some(selection) = selections.next() {
2301 // Find all the selections that span a contiguous row range
2302 contiguous_row_selections.push(selection.clone());
2303 let start_row = selection.start.row;
2304 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
2305 display_map.next_line_boundary(selection.end).0.row + 1
2306 } else {
2307 selection.end.row
2308 };
2309
2310 while let Some(next_selection) = selections.peek() {
2311 if next_selection.start.row <= end_row {
2312 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
2313 display_map.next_line_boundary(next_selection.end).0.row + 1
2314 } else {
2315 next_selection.end.row
2316 };
2317 contiguous_row_selections.push(selections.next().unwrap().clone());
2318 } else {
2319 break;
2320 }
2321 }
2322
2323 // Move the text spanned by the row range to be after the last line of the row range
2324 if end_row <= buffer.max_point().row {
2325 let range_to_move = Point::new(start_row, 0)..Point::new(end_row, 0);
2326 let insertion_point = display_map.next_line_boundary(Point::new(end_row, 0)).0;
2327
2328 // Don't move lines across excerpt boundaries
2329 if !buffer.range_contains_excerpt_boundary(range_to_move.start..insertion_point) {
2330 let mut text = String::from("\n");
2331 text.extend(buffer.text_for_range(range_to_move.clone()));
2332 text.pop(); // Drop trailing newline
2333 edits.push((
2334 buffer.anchor_after(range_to_move.start)
2335 ..buffer.anchor_before(range_to_move.end),
2336 String::new(),
2337 ));
2338 let insertion_anchor = buffer.anchor_after(insertion_point);
2339 edits.push((insertion_anchor.clone()..insertion_anchor, text));
2340
2341 let row_delta = insertion_point.row - range_to_move.end.row + 1;
2342
2343 // Move selections down
2344 new_selections.extend(contiguous_row_selections.drain(..).map(
2345 |mut selection| {
2346 selection.start.row += row_delta;
2347 selection.end.row += row_delta;
2348 selection
2349 },
2350 ));
2351
2352 // Move folds down
2353 unfold_ranges.push(range_to_move.clone());
2354 for fold in display_map.folds_in_range(
2355 buffer.anchor_before(range_to_move.start)
2356 ..buffer.anchor_after(range_to_move.end),
2357 ) {
2358 let mut start = fold.start.to_point(&buffer);
2359 let mut end = fold.end.to_point(&buffer);
2360 start.row += row_delta;
2361 end.row += row_delta;
2362 refold_ranges.push(start..end);
2363 }
2364 }
2365 }
2366
2367 // If we didn't move line(s), preserve the existing selections
2368 new_selections.extend(contiguous_row_selections.drain(..));
2369 }
2370
2371 self.start_transaction(cx);
2372 self.unfold_ranges(unfold_ranges, cx);
2373 self.buffer.update(cx, |buffer, cx| {
2374 for (range, text) in edits {
2375 buffer.edit([range], text, cx);
2376 }
2377 });
2378 self.fold_ranges(refold_ranges, cx);
2379 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2380 self.end_transaction(cx);
2381 }
2382
2383 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
2384 self.start_transaction(cx);
2385 let mut text = String::new();
2386 let mut selections = self.local_selections::<Point>(cx);
2387 let mut clipboard_selections = Vec::with_capacity(selections.len());
2388 {
2389 let buffer = self.buffer.read(cx).read(cx);
2390 let max_point = buffer.max_point();
2391 for selection in &mut selections {
2392 let is_entire_line = selection.is_empty();
2393 if is_entire_line {
2394 selection.start = Point::new(selection.start.row, 0);
2395 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
2396 }
2397 let mut len = 0;
2398 for chunk in buffer.text_for_range(selection.start..selection.end) {
2399 text.push_str(chunk);
2400 len += chunk.len();
2401 }
2402 clipboard_selections.push(ClipboardSelection {
2403 len,
2404 is_entire_line,
2405 });
2406 }
2407 }
2408 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2409 self.insert("", cx);
2410 self.end_transaction(cx);
2411
2412 cx.as_mut()
2413 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
2414 }
2415
2416 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
2417 let selections = self.local_selections::<Point>(cx);
2418 let mut text = String::new();
2419 let mut clipboard_selections = Vec::with_capacity(selections.len());
2420 {
2421 let buffer = self.buffer.read(cx).read(cx);
2422 let max_point = buffer.max_point();
2423 for selection in selections.iter() {
2424 let mut start = selection.start;
2425 let mut end = selection.end;
2426 let is_entire_line = selection.is_empty();
2427 if is_entire_line {
2428 start = Point::new(start.row, 0);
2429 end = cmp::min(max_point, Point::new(start.row + 1, 0));
2430 }
2431 let mut len = 0;
2432 for chunk in buffer.text_for_range(start..end) {
2433 text.push_str(chunk);
2434 len += chunk.len();
2435 }
2436 clipboard_selections.push(ClipboardSelection {
2437 len,
2438 is_entire_line,
2439 });
2440 }
2441 }
2442
2443 cx.as_mut()
2444 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
2445 }
2446
2447 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
2448 if let Some(item) = cx.as_mut().read_from_clipboard() {
2449 let clipboard_text = item.text();
2450 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
2451 let mut selections = self.local_selections::<usize>(cx);
2452 let all_selections_were_entire_line =
2453 clipboard_selections.iter().all(|s| s.is_entire_line);
2454 if clipboard_selections.len() != selections.len() {
2455 clipboard_selections.clear();
2456 }
2457
2458 let mut delta = 0_isize;
2459 let mut start_offset = 0;
2460 for (i, selection) in selections.iter_mut().enumerate() {
2461 let to_insert;
2462 let entire_line;
2463 if let Some(clipboard_selection) = clipboard_selections.get(i) {
2464 let end_offset = start_offset + clipboard_selection.len;
2465 to_insert = &clipboard_text[start_offset..end_offset];
2466 entire_line = clipboard_selection.is_entire_line;
2467 start_offset = end_offset
2468 } else {
2469 to_insert = clipboard_text.as_str();
2470 entire_line = all_selections_were_entire_line;
2471 }
2472
2473 selection.start = (selection.start as isize + delta) as usize;
2474 selection.end = (selection.end as isize + delta) as usize;
2475
2476 self.buffer.update(cx, |buffer, cx| {
2477 // If the corresponding selection was empty when this slice of the
2478 // clipboard text was written, then the entire line containing the
2479 // selection was copied. If this selection is also currently empty,
2480 // then paste the line before the current line of the buffer.
2481 let range = if selection.is_empty() && entire_line {
2482 let column = selection.start.to_point(&buffer.read(cx)).column as usize;
2483 let line_start = selection.start - column;
2484 line_start..line_start
2485 } else {
2486 selection.start..selection.end
2487 };
2488
2489 delta += to_insert.len() as isize - range.len() as isize;
2490 buffer.edit([range], to_insert, cx);
2491 selection.start += to_insert.len();
2492 selection.end = selection.start;
2493 });
2494 }
2495 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2496 } else {
2497 self.insert(clipboard_text, cx);
2498 }
2499 }
2500 }
2501
2502 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
2503 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
2504 if let Some((selections, _)) = self.selection_history.get(&tx_id).cloned() {
2505 self.set_selections(selections, cx);
2506 }
2507 self.request_autoscroll(Autoscroll::Fit, cx);
2508 }
2509 }
2510
2511 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
2512 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
2513 if let Some((_, Some(selections))) = self.selection_history.get(&tx_id).cloned() {
2514 self.set_selections(selections, cx);
2515 }
2516 self.request_autoscroll(Autoscroll::Fit, cx);
2517 }
2518 }
2519
2520 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
2521 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2522 let mut selections = self.local_selections::<Point>(cx);
2523 for selection in &mut selections {
2524 let start = selection.start.to_display_point(&display_map);
2525 let end = selection.end.to_display_point(&display_map);
2526
2527 if start != end {
2528 selection.end = selection.start.clone();
2529 } else {
2530 let cursor = movement::left(&display_map, start)
2531 .unwrap()
2532 .to_point(&display_map);
2533 selection.start = cursor.clone();
2534 selection.end = cursor;
2535 }
2536 selection.reversed = false;
2537 selection.goal = SelectionGoal::None;
2538 }
2539 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2540 }
2541
2542 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
2543 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2544 let mut selections = self.local_selections::<Point>(cx);
2545 for selection in &mut selections {
2546 let head = selection.head().to_display_point(&display_map);
2547 let cursor = movement::left(&display_map, head)
2548 .unwrap()
2549 .to_point(&display_map);
2550 selection.set_head(cursor);
2551 selection.goal = SelectionGoal::None;
2552 }
2553 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2554 }
2555
2556 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
2557 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2558 let mut selections = self.local_selections::<Point>(cx);
2559 for selection in &mut selections {
2560 let start = selection.start.to_display_point(&display_map);
2561 let end = selection.end.to_display_point(&display_map);
2562
2563 if start != end {
2564 selection.start = selection.end.clone();
2565 } else {
2566 let cursor = movement::right(&display_map, end)
2567 .unwrap()
2568 .to_point(&display_map);
2569 selection.start = cursor;
2570 selection.end = cursor;
2571 }
2572 selection.reversed = false;
2573 selection.goal = SelectionGoal::None;
2574 }
2575 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2576 }
2577
2578 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
2579 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2580 let mut selections = self.local_selections::<Point>(cx);
2581 for selection in &mut selections {
2582 let head = selection.head().to_display_point(&display_map);
2583 let cursor = movement::right(&display_map, head)
2584 .unwrap()
2585 .to_point(&display_map);
2586 selection.set_head(cursor);
2587 selection.goal = SelectionGoal::None;
2588 }
2589 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2590 }
2591
2592 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
2593 if let Some(completion_state) = &mut self.completion_state {
2594 if completion_state.selected_item > 0 {
2595 completion_state.selected_item -= 1;
2596 completion_state
2597 .list
2598 .scroll_to(ScrollTarget::Show(completion_state.selected_item));
2599 }
2600 cx.notify();
2601 return;
2602 }
2603
2604 if matches!(self.mode, EditorMode::SingleLine) {
2605 cx.propagate_action();
2606 return;
2607 }
2608
2609 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2610 let mut selections = self.local_selections::<Point>(cx);
2611 for selection in &mut selections {
2612 let start = selection.start.to_display_point(&display_map);
2613 let end = selection.end.to_display_point(&display_map);
2614 if start != end {
2615 selection.goal = SelectionGoal::None;
2616 }
2617
2618 let (start, goal) = movement::up(&display_map, start, selection.goal).unwrap();
2619 let cursor = start.to_point(&display_map);
2620 selection.start = cursor;
2621 selection.end = cursor;
2622 selection.goal = goal;
2623 selection.reversed = false;
2624 }
2625 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2626 }
2627
2628 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
2629 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2630 let mut selections = self.local_selections::<Point>(cx);
2631 for selection in &mut selections {
2632 let head = selection.head().to_display_point(&display_map);
2633 let (head, goal) = movement::up(&display_map, head, selection.goal).unwrap();
2634 let cursor = head.to_point(&display_map);
2635 selection.set_head(cursor);
2636 selection.goal = goal;
2637 }
2638 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2639 }
2640
2641 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
2642 if let Some(completion_state) = &mut self.completion_state {
2643 if completion_state.selected_item + 1 < completion_state.matches.len() {
2644 completion_state.selected_item += 1;
2645 completion_state
2646 .list
2647 .scroll_to(ScrollTarget::Show(completion_state.selected_item));
2648 }
2649 cx.notify();
2650 return;
2651 }
2652
2653 if matches!(self.mode, EditorMode::SingleLine) {
2654 cx.propagate_action();
2655 return;
2656 }
2657
2658 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2659 let mut selections = self.local_selections::<Point>(cx);
2660 for selection in &mut selections {
2661 let start = selection.start.to_display_point(&display_map);
2662 let end = selection.end.to_display_point(&display_map);
2663 if start != end {
2664 selection.goal = SelectionGoal::None;
2665 }
2666
2667 let (start, goal) = movement::down(&display_map, end, selection.goal).unwrap();
2668 let cursor = start.to_point(&display_map);
2669 selection.start = cursor;
2670 selection.end = cursor;
2671 selection.goal = goal;
2672 selection.reversed = false;
2673 }
2674 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2675 }
2676
2677 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
2678 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2679 let mut selections = self.local_selections::<Point>(cx);
2680 for selection in &mut selections {
2681 let head = selection.head().to_display_point(&display_map);
2682 let (head, goal) = movement::down(&display_map, head, selection.goal).unwrap();
2683 let cursor = head.to_point(&display_map);
2684 selection.set_head(cursor);
2685 selection.goal = goal;
2686 }
2687 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2688 }
2689
2690 pub fn move_to_previous_word_boundary(
2691 &mut self,
2692 _: &MoveToPreviousWordBoundary,
2693 cx: &mut ViewContext<Self>,
2694 ) {
2695 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2696 let mut selections = self.local_selections::<Point>(cx);
2697 for selection in &mut selections {
2698 let head = selection.head().to_display_point(&display_map);
2699 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2700 selection.start = cursor.clone();
2701 selection.end = cursor;
2702 selection.reversed = false;
2703 selection.goal = SelectionGoal::None;
2704 }
2705 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2706 }
2707
2708 pub fn select_to_previous_word_boundary(
2709 &mut self,
2710 _: &SelectToPreviousWordBoundary,
2711 cx: &mut ViewContext<Self>,
2712 ) {
2713 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2714 let mut selections = self.local_selections::<Point>(cx);
2715 for selection in &mut selections {
2716 let head = selection.head().to_display_point(&display_map);
2717 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2718 selection.set_head(cursor);
2719 selection.goal = SelectionGoal::None;
2720 }
2721 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2722 }
2723
2724 pub fn delete_to_previous_word_boundary(
2725 &mut self,
2726 _: &DeleteToPreviousWordBoundary,
2727 cx: &mut ViewContext<Self>,
2728 ) {
2729 self.start_transaction(cx);
2730 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2731 let mut selections = self.local_selections::<Point>(cx);
2732 for selection in &mut selections {
2733 if selection.is_empty() {
2734 let head = selection.head().to_display_point(&display_map);
2735 let cursor =
2736 movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2737 selection.set_head(cursor);
2738 selection.goal = SelectionGoal::None;
2739 }
2740 }
2741 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2742 self.insert("", cx);
2743 self.end_transaction(cx);
2744 }
2745
2746 pub fn move_to_next_word_boundary(
2747 &mut self,
2748 _: &MoveToNextWordBoundary,
2749 cx: &mut ViewContext<Self>,
2750 ) {
2751 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2752 let mut selections = self.local_selections::<Point>(cx);
2753 for selection in &mut selections {
2754 let head = selection.head().to_display_point(&display_map);
2755 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
2756 selection.start = cursor;
2757 selection.end = cursor;
2758 selection.reversed = false;
2759 selection.goal = SelectionGoal::None;
2760 }
2761 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2762 }
2763
2764 pub fn select_to_next_word_boundary(
2765 &mut self,
2766 _: &SelectToNextWordBoundary,
2767 cx: &mut ViewContext<Self>,
2768 ) {
2769 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2770 let mut selections = self.local_selections::<Point>(cx);
2771 for selection in &mut selections {
2772 let head = selection.head().to_display_point(&display_map);
2773 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
2774 selection.set_head(cursor);
2775 selection.goal = SelectionGoal::None;
2776 }
2777 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2778 }
2779
2780 pub fn delete_to_next_word_boundary(
2781 &mut self,
2782 _: &DeleteToNextWordBoundary,
2783 cx: &mut ViewContext<Self>,
2784 ) {
2785 self.start_transaction(cx);
2786 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2787 let mut selections = self.local_selections::<Point>(cx);
2788 for selection in &mut selections {
2789 if selection.is_empty() {
2790 let head = selection.head().to_display_point(&display_map);
2791 let cursor =
2792 movement::next_word_boundary(&display_map, head).to_point(&display_map);
2793 selection.set_head(cursor);
2794 selection.goal = SelectionGoal::None;
2795 }
2796 }
2797 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2798 self.insert("", cx);
2799 self.end_transaction(cx);
2800 }
2801
2802 pub fn move_to_beginning_of_line(
2803 &mut self,
2804 _: &MoveToBeginningOfLine,
2805 cx: &mut ViewContext<Self>,
2806 ) {
2807 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2808 let mut selections = self.local_selections::<Point>(cx);
2809 for selection in &mut selections {
2810 let head = selection.head().to_display_point(&display_map);
2811 let new_head = movement::line_beginning(&display_map, head, true);
2812 let cursor = new_head.to_point(&display_map);
2813 selection.start = cursor;
2814 selection.end = cursor;
2815 selection.reversed = false;
2816 selection.goal = SelectionGoal::None;
2817 }
2818 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2819 }
2820
2821 pub fn select_to_beginning_of_line(
2822 &mut self,
2823 SelectToBeginningOfLine(toggle_indent): &SelectToBeginningOfLine,
2824 cx: &mut ViewContext<Self>,
2825 ) {
2826 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2827 let mut selections = self.local_selections::<Point>(cx);
2828 for selection in &mut selections {
2829 let head = selection.head().to_display_point(&display_map);
2830 let new_head = movement::line_beginning(&display_map, head, *toggle_indent);
2831 selection.set_head(new_head.to_point(&display_map));
2832 selection.goal = SelectionGoal::None;
2833 }
2834 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2835 }
2836
2837 pub fn delete_to_beginning_of_line(
2838 &mut self,
2839 _: &DeleteToBeginningOfLine,
2840 cx: &mut ViewContext<Self>,
2841 ) {
2842 self.start_transaction(cx);
2843 self.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
2844 self.backspace(&Backspace, cx);
2845 self.end_transaction(cx);
2846 }
2847
2848 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
2849 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2850 let mut selections = self.local_selections::<Point>(cx);
2851 {
2852 for selection in &mut selections {
2853 let head = selection.head().to_display_point(&display_map);
2854 let new_head = movement::line_end(&display_map, head);
2855 let anchor = new_head.to_point(&display_map);
2856 selection.start = anchor.clone();
2857 selection.end = anchor;
2858 selection.reversed = false;
2859 selection.goal = SelectionGoal::None;
2860 }
2861 }
2862 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2863 }
2864
2865 pub fn select_to_end_of_line(&mut self, _: &SelectToEndOfLine, cx: &mut ViewContext<Self>) {
2866 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2867 let mut selections = self.local_selections::<Point>(cx);
2868 for selection in &mut selections {
2869 let head = selection.head().to_display_point(&display_map);
2870 let new_head = movement::line_end(&display_map, head);
2871 selection.set_head(new_head.to_point(&display_map));
2872 selection.goal = SelectionGoal::None;
2873 }
2874 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2875 }
2876
2877 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
2878 self.start_transaction(cx);
2879 self.select_to_end_of_line(&SelectToEndOfLine, cx);
2880 self.delete(&Delete, cx);
2881 self.end_transaction(cx);
2882 }
2883
2884 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
2885 self.start_transaction(cx);
2886 self.select_to_end_of_line(&SelectToEndOfLine, cx);
2887 self.cut(&Cut, cx);
2888 self.end_transaction(cx);
2889 }
2890
2891 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
2892 if matches!(self.mode, EditorMode::SingleLine) {
2893 cx.propagate_action();
2894 return;
2895 }
2896
2897 let selection = Selection {
2898 id: post_inc(&mut self.next_selection_id),
2899 start: 0,
2900 end: 0,
2901 reversed: false,
2902 goal: SelectionGoal::None,
2903 };
2904 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2905 }
2906
2907 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
2908 let mut selection = self.local_selections::<Point>(cx).last().unwrap().clone();
2909 selection.set_head(Point::zero());
2910 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2911 }
2912
2913 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
2914 if matches!(self.mode, EditorMode::SingleLine) {
2915 cx.propagate_action();
2916 return;
2917 }
2918
2919 let cursor = self.buffer.read(cx).read(cx).len();
2920 let selection = Selection {
2921 id: post_inc(&mut self.next_selection_id),
2922 start: cursor,
2923 end: cursor,
2924 reversed: false,
2925 goal: SelectionGoal::None,
2926 };
2927 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2928 }
2929
2930 pub fn set_nav_history(&mut self, nav_history: Option<ItemNavHistory>) {
2931 self.nav_history = nav_history;
2932 }
2933
2934 pub fn nav_history(&self) -> Option<&ItemNavHistory> {
2935 self.nav_history.as_ref()
2936 }
2937
2938 fn push_to_nav_history(
2939 &self,
2940 position: Anchor,
2941 new_position: Option<Point>,
2942 cx: &mut ViewContext<Self>,
2943 ) {
2944 if let Some(nav_history) = &self.nav_history {
2945 let buffer = self.buffer.read(cx).read(cx);
2946 let offset = position.to_offset(&buffer);
2947 let point = position.to_point(&buffer);
2948 drop(buffer);
2949
2950 if let Some(new_position) = new_position {
2951 let row_delta = (new_position.row as i64 - point.row as i64).abs();
2952 if row_delta < MIN_NAVIGATION_HISTORY_ROW_DELTA {
2953 return;
2954 }
2955 }
2956
2957 nav_history.push(Some(NavigationData {
2958 anchor: position,
2959 offset,
2960 }));
2961 }
2962 }
2963
2964 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
2965 let mut selection = self.local_selections::<usize>(cx).first().unwrap().clone();
2966 selection.set_head(self.buffer.read(cx).read(cx).len());
2967 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2968 }
2969
2970 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
2971 let selection = Selection {
2972 id: post_inc(&mut self.next_selection_id),
2973 start: 0,
2974 end: self.buffer.read(cx).read(cx).len(),
2975 reversed: false,
2976 goal: SelectionGoal::None,
2977 };
2978 self.update_selections(vec![selection], None, cx);
2979 }
2980
2981 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
2982 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2983 let mut selections = self.local_selections::<Point>(cx);
2984 let max_point = display_map.buffer_snapshot.max_point();
2985 for selection in &mut selections {
2986 let rows = selection.spanned_rows(true, &display_map);
2987 selection.start = Point::new(rows.start, 0);
2988 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
2989 selection.reversed = false;
2990 }
2991 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2992 }
2993
2994 pub fn split_selection_into_lines(
2995 &mut self,
2996 _: &SplitSelectionIntoLines,
2997 cx: &mut ViewContext<Self>,
2998 ) {
2999 let mut to_unfold = Vec::new();
3000 let mut new_selections = Vec::new();
3001 {
3002 let selections = self.local_selections::<Point>(cx);
3003 let buffer = self.buffer.read(cx).read(cx);
3004 for selection in selections {
3005 for row in selection.start.row..selection.end.row {
3006 let cursor = Point::new(row, buffer.line_len(row));
3007 new_selections.push(Selection {
3008 id: post_inc(&mut self.next_selection_id),
3009 start: cursor,
3010 end: cursor,
3011 reversed: false,
3012 goal: SelectionGoal::None,
3013 });
3014 }
3015 new_selections.push(Selection {
3016 id: selection.id,
3017 start: selection.end,
3018 end: selection.end,
3019 reversed: false,
3020 goal: SelectionGoal::None,
3021 });
3022 to_unfold.push(selection.start..selection.end);
3023 }
3024 }
3025 self.unfold_ranges(to_unfold, cx);
3026 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3027 }
3028
3029 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
3030 self.add_selection(true, cx);
3031 }
3032
3033 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
3034 self.add_selection(false, cx);
3035 }
3036
3037 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
3038 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3039 let mut selections = self.local_selections::<Point>(cx);
3040 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
3041 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
3042 let range = oldest_selection.display_range(&display_map).sorted();
3043 let columns = cmp::min(range.start.column(), range.end.column())
3044 ..cmp::max(range.start.column(), range.end.column());
3045
3046 selections.clear();
3047 let mut stack = Vec::new();
3048 for row in range.start.row()..=range.end.row() {
3049 if let Some(selection) = self.build_columnar_selection(
3050 &display_map,
3051 row,
3052 &columns,
3053 oldest_selection.reversed,
3054 ) {
3055 stack.push(selection.id);
3056 selections.push(selection);
3057 }
3058 }
3059
3060 if above {
3061 stack.reverse();
3062 }
3063
3064 AddSelectionsState { above, stack }
3065 });
3066
3067 let last_added_selection = *state.stack.last().unwrap();
3068 let mut new_selections = Vec::new();
3069 if above == state.above {
3070 let end_row = if above {
3071 0
3072 } else {
3073 display_map.max_point().row()
3074 };
3075
3076 'outer: for selection in selections {
3077 if selection.id == last_added_selection {
3078 let range = selection.display_range(&display_map).sorted();
3079 debug_assert_eq!(range.start.row(), range.end.row());
3080 let mut row = range.start.row();
3081 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
3082 {
3083 start..end
3084 } else {
3085 cmp::min(range.start.column(), range.end.column())
3086 ..cmp::max(range.start.column(), range.end.column())
3087 };
3088
3089 while row != end_row {
3090 if above {
3091 row -= 1;
3092 } else {
3093 row += 1;
3094 }
3095
3096 if let Some(new_selection) = self.build_columnar_selection(
3097 &display_map,
3098 row,
3099 &columns,
3100 selection.reversed,
3101 ) {
3102 state.stack.push(new_selection.id);
3103 if above {
3104 new_selections.push(new_selection);
3105 new_selections.push(selection);
3106 } else {
3107 new_selections.push(selection);
3108 new_selections.push(new_selection);
3109 }
3110
3111 continue 'outer;
3112 }
3113 }
3114 }
3115
3116 new_selections.push(selection);
3117 }
3118 } else {
3119 new_selections = selections;
3120 new_selections.retain(|s| s.id != last_added_selection);
3121 state.stack.pop();
3122 }
3123
3124 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3125 if state.stack.len() > 1 {
3126 self.add_selections_state = Some(state);
3127 }
3128 }
3129
3130 pub fn select_next(&mut self, action: &SelectNext, cx: &mut ViewContext<Self>) {
3131 let replace_newest = action.0;
3132 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3133 let buffer = &display_map.buffer_snapshot;
3134 let mut selections = self.local_selections::<usize>(cx);
3135 if let Some(mut select_next_state) = self.select_next_state.take() {
3136 let query = &select_next_state.query;
3137 if !select_next_state.done {
3138 let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
3139 let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
3140 let mut next_selected_range = None;
3141
3142 let bytes_after_last_selection =
3143 buffer.bytes_in_range(last_selection.end..buffer.len());
3144 let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
3145 let query_matches = query
3146 .stream_find_iter(bytes_after_last_selection)
3147 .map(|result| (last_selection.end, result))
3148 .chain(
3149 query
3150 .stream_find_iter(bytes_before_first_selection)
3151 .map(|result| (0, result)),
3152 );
3153 for (start_offset, query_match) in query_matches {
3154 let query_match = query_match.unwrap(); // can only fail due to I/O
3155 let offset_range =
3156 start_offset + query_match.start()..start_offset + query_match.end();
3157 let display_range = offset_range.start.to_display_point(&display_map)
3158 ..offset_range.end.to_display_point(&display_map);
3159
3160 if !select_next_state.wordwise
3161 || (!movement::is_inside_word(&display_map, display_range.start)
3162 && !movement::is_inside_word(&display_map, display_range.end))
3163 {
3164 next_selected_range = Some(offset_range);
3165 break;
3166 }
3167 }
3168
3169 if let Some(next_selected_range) = next_selected_range {
3170 if replace_newest {
3171 if let Some(newest_id) =
3172 selections.iter().max_by_key(|s| s.id).map(|s| s.id)
3173 {
3174 selections.retain(|s| s.id != newest_id);
3175 }
3176 }
3177 selections.push(Selection {
3178 id: post_inc(&mut self.next_selection_id),
3179 start: next_selected_range.start,
3180 end: next_selected_range.end,
3181 reversed: false,
3182 goal: SelectionGoal::None,
3183 });
3184 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3185 } else {
3186 select_next_state.done = true;
3187 }
3188 }
3189
3190 self.select_next_state = Some(select_next_state);
3191 } else if selections.len() == 1 {
3192 let selection = selections.last_mut().unwrap();
3193 if selection.start == selection.end {
3194 let word_range = movement::surrounding_word(
3195 &display_map,
3196 selection.start.to_display_point(&display_map),
3197 );
3198 selection.start = word_range.start.to_offset(&display_map, Bias::Left);
3199 selection.end = word_range.end.to_offset(&display_map, Bias::Left);
3200 selection.goal = SelectionGoal::None;
3201 selection.reversed = false;
3202
3203 let query = buffer
3204 .text_for_range(selection.start..selection.end)
3205 .collect::<String>();
3206 let select_state = SelectNextState {
3207 query: AhoCorasick::new_auto_configured(&[query]),
3208 wordwise: true,
3209 done: false,
3210 };
3211 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3212 self.select_next_state = Some(select_state);
3213 } else {
3214 let query = buffer
3215 .text_for_range(selection.start..selection.end)
3216 .collect::<String>();
3217 self.select_next_state = Some(SelectNextState {
3218 query: AhoCorasick::new_auto_configured(&[query]),
3219 wordwise: false,
3220 done: false,
3221 });
3222 self.select_next(action, cx);
3223 }
3224 }
3225 }
3226
3227 pub fn toggle_comments(&mut self, _: &ToggleComments, cx: &mut ViewContext<Self>) {
3228 // Get the line comment prefix. Split its trailing whitespace into a separate string,
3229 // as that portion won't be used for detecting if a line is a comment.
3230 let full_comment_prefix =
3231 if let Some(prefix) = self.language(cx).and_then(|l| l.line_comment_prefix()) {
3232 prefix.to_string()
3233 } else {
3234 return;
3235 };
3236 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
3237 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
3238
3239 self.start_transaction(cx);
3240 let mut selections = self.local_selections::<Point>(cx);
3241 let mut all_selection_lines_are_comments = true;
3242 let mut edit_ranges = Vec::new();
3243 let mut last_toggled_row = None;
3244 self.buffer.update(cx, |buffer, cx| {
3245 for selection in &mut selections {
3246 edit_ranges.clear();
3247 let snapshot = buffer.snapshot(cx);
3248
3249 let end_row =
3250 if selection.end.row > selection.start.row && selection.end.column == 0 {
3251 selection.end.row
3252 } else {
3253 selection.end.row + 1
3254 };
3255
3256 for row in selection.start.row..end_row {
3257 // If multiple selections contain a given row, avoid processing that
3258 // row more than once.
3259 if last_toggled_row == Some(row) {
3260 continue;
3261 } else {
3262 last_toggled_row = Some(row);
3263 }
3264
3265 if snapshot.is_line_blank(row) {
3266 continue;
3267 }
3268
3269 let start = Point::new(row, snapshot.indent_column_for_line(row));
3270 let mut line_bytes = snapshot
3271 .bytes_in_range(start..snapshot.max_point())
3272 .flatten()
3273 .copied();
3274
3275 // If this line currently begins with the line comment prefix, then record
3276 // the range containing the prefix.
3277 if all_selection_lines_are_comments
3278 && line_bytes
3279 .by_ref()
3280 .take(comment_prefix.len())
3281 .eq(comment_prefix.bytes())
3282 {
3283 // Include any whitespace that matches the comment prefix.
3284 let matching_whitespace_len = line_bytes
3285 .zip(comment_prefix_whitespace.bytes())
3286 .take_while(|(a, b)| a == b)
3287 .count() as u32;
3288 let end = Point::new(
3289 row,
3290 start.column + comment_prefix.len() as u32 + matching_whitespace_len,
3291 );
3292 edit_ranges.push(start..end);
3293 }
3294 // If this line does not begin with the line comment prefix, then record
3295 // the position where the prefix should be inserted.
3296 else {
3297 all_selection_lines_are_comments = false;
3298 edit_ranges.push(start..start);
3299 }
3300 }
3301
3302 if !edit_ranges.is_empty() {
3303 if all_selection_lines_are_comments {
3304 buffer.edit(edit_ranges.iter().cloned(), "", cx);
3305 } else {
3306 let min_column = edit_ranges.iter().map(|r| r.start.column).min().unwrap();
3307 let edit_ranges = edit_ranges.iter().map(|range| {
3308 let position = Point::new(range.start.row, min_column);
3309 position..position
3310 });
3311 buffer.edit(edit_ranges, &full_comment_prefix, cx);
3312 }
3313 }
3314 }
3315 });
3316
3317 self.update_selections(
3318 self.local_selections::<usize>(cx),
3319 Some(Autoscroll::Fit),
3320 cx,
3321 );
3322 self.end_transaction(cx);
3323 }
3324
3325 pub fn select_larger_syntax_node(
3326 &mut self,
3327 _: &SelectLargerSyntaxNode,
3328 cx: &mut ViewContext<Self>,
3329 ) {
3330 let old_selections = self.local_selections::<usize>(cx).into_boxed_slice();
3331 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3332 let buffer = self.buffer.read(cx).snapshot(cx);
3333
3334 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
3335 let mut selected_larger_node = false;
3336 let new_selections = old_selections
3337 .iter()
3338 .map(|selection| {
3339 let old_range = selection.start..selection.end;
3340 let mut new_range = old_range.clone();
3341 while let Some(containing_range) =
3342 buffer.range_for_syntax_ancestor(new_range.clone())
3343 {
3344 new_range = containing_range;
3345 if !display_map.intersects_fold(new_range.start)
3346 && !display_map.intersects_fold(new_range.end)
3347 {
3348 break;
3349 }
3350 }
3351
3352 selected_larger_node |= new_range != old_range;
3353 Selection {
3354 id: selection.id,
3355 start: new_range.start,
3356 end: new_range.end,
3357 goal: SelectionGoal::None,
3358 reversed: selection.reversed,
3359 }
3360 })
3361 .collect::<Vec<_>>();
3362
3363 if selected_larger_node {
3364 stack.push(old_selections);
3365 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3366 }
3367 self.select_larger_syntax_node_stack = stack;
3368 }
3369
3370 pub fn select_smaller_syntax_node(
3371 &mut self,
3372 _: &SelectSmallerSyntaxNode,
3373 cx: &mut ViewContext<Self>,
3374 ) {
3375 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
3376 if let Some(selections) = stack.pop() {
3377 self.update_selections(selections.to_vec(), Some(Autoscroll::Fit), cx);
3378 }
3379 self.select_larger_syntax_node_stack = stack;
3380 }
3381
3382 pub fn move_to_enclosing_bracket(
3383 &mut self,
3384 _: &MoveToEnclosingBracket,
3385 cx: &mut ViewContext<Self>,
3386 ) {
3387 let mut selections = self.local_selections::<usize>(cx);
3388 let buffer = self.buffer.read(cx).snapshot(cx);
3389 for selection in &mut selections {
3390 if let Some((open_range, close_range)) =
3391 buffer.enclosing_bracket_ranges(selection.start..selection.end)
3392 {
3393 let close_range = close_range.to_inclusive();
3394 let destination = if close_range.contains(&selection.start)
3395 && close_range.contains(&selection.end)
3396 {
3397 open_range.end
3398 } else {
3399 *close_range.start()
3400 };
3401 selection.start = destination;
3402 selection.end = destination;
3403 }
3404 }
3405
3406 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3407 }
3408
3409 pub fn show_next_diagnostic(&mut self, _: &ShowNextDiagnostic, cx: &mut ViewContext<Self>) {
3410 let buffer = self.buffer.read(cx).snapshot(cx);
3411 let selection = self.newest_selection::<usize>(&buffer);
3412 let active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
3413 active_diagnostics
3414 .primary_range
3415 .to_offset(&buffer)
3416 .to_inclusive()
3417 });
3418 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
3419 if active_primary_range.contains(&selection.head()) {
3420 *active_primary_range.end()
3421 } else {
3422 selection.head()
3423 }
3424 } else {
3425 selection.head()
3426 };
3427
3428 loop {
3429 let next_group = buffer
3430 .diagnostics_in_range::<_, usize>(search_start..buffer.len())
3431 .find_map(|entry| {
3432 if entry.diagnostic.is_primary
3433 && !entry.range.is_empty()
3434 && Some(entry.range.end) != active_primary_range.as_ref().map(|r| *r.end())
3435 {
3436 Some((entry.range, entry.diagnostic.group_id))
3437 } else {
3438 None
3439 }
3440 });
3441
3442 if let Some((primary_range, group_id)) = next_group {
3443 self.activate_diagnostics(group_id, cx);
3444 self.update_selections(
3445 vec![Selection {
3446 id: selection.id,
3447 start: primary_range.start,
3448 end: primary_range.start,
3449 reversed: false,
3450 goal: SelectionGoal::None,
3451 }],
3452 Some(Autoscroll::Center),
3453 cx,
3454 );
3455 break;
3456 } else if search_start == 0 {
3457 break;
3458 } else {
3459 // Cycle around to the start of the buffer.
3460 search_start = 0;
3461 }
3462 }
3463 }
3464
3465 pub fn go_to_definition(
3466 workspace: &mut Workspace,
3467 _: &GoToDefinition,
3468 cx: &mut ViewContext<Workspace>,
3469 ) {
3470 let active_item = workspace.active_item(cx);
3471 let editor_handle = if let Some(editor) = active_item
3472 .as_ref()
3473 .and_then(|item| item.act_as::<Self>(cx))
3474 {
3475 editor
3476 } else {
3477 return;
3478 };
3479
3480 let editor = editor_handle.read(cx);
3481 let buffer = editor.buffer.read(cx);
3482 let head = editor.newest_selection::<usize>(&buffer.read(cx)).head();
3483 let (buffer, head) = editor.buffer.read(cx).text_anchor_for_position(head, cx);
3484 let definitions = workspace
3485 .project()
3486 .update(cx, |project, cx| project.definition(&buffer, head, cx));
3487 cx.spawn(|workspace, mut cx| async move {
3488 let definitions = definitions.await?;
3489 workspace.update(&mut cx, |workspace, cx| {
3490 for definition in definitions {
3491 let range = definition
3492 .target_range
3493 .to_offset(definition.target_buffer.read(cx));
3494 let target_editor_handle = workspace
3495 .open_item(BufferItemHandle(definition.target_buffer), cx)
3496 .downcast::<Self>()
3497 .unwrap();
3498
3499 target_editor_handle.update(cx, |target_editor, cx| {
3500 // When selecting a definition in a different buffer, disable the nav history
3501 // to avoid creating a history entry at the previous cursor location.
3502 let disabled_history = if editor_handle == target_editor_handle {
3503 None
3504 } else {
3505 target_editor.nav_history.take()
3506 };
3507 target_editor.select_ranges([range], Some(Autoscroll::Center), cx);
3508 if disabled_history.is_some() {
3509 target_editor.nav_history = disabled_history;
3510 }
3511 });
3512 }
3513 });
3514
3515 Ok::<(), anyhow::Error>(())
3516 })
3517 .detach_and_log_err(cx);
3518 }
3519
3520 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
3521 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
3522 let buffer = self.buffer.read(cx).snapshot(cx);
3523 let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
3524 let is_valid = buffer
3525 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone())
3526 .any(|entry| {
3527 entry.diagnostic.is_primary
3528 && !entry.range.is_empty()
3529 && entry.range.start == primary_range_start
3530 && entry.diagnostic.message == active_diagnostics.primary_message
3531 });
3532
3533 if is_valid != active_diagnostics.is_valid {
3534 active_diagnostics.is_valid = is_valid;
3535 let mut new_styles = HashMap::default();
3536 for (block_id, diagnostic) in &active_diagnostics.blocks {
3537 new_styles.insert(
3538 *block_id,
3539 diagnostic_block_renderer(
3540 diagnostic.clone(),
3541 is_valid,
3542 self.build_settings.clone(),
3543 ),
3544 );
3545 }
3546 self.display_map
3547 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
3548 }
3549 }
3550 }
3551
3552 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) {
3553 self.dismiss_diagnostics(cx);
3554 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
3555 let buffer = self.buffer.read(cx).snapshot(cx);
3556
3557 let mut primary_range = None;
3558 let mut primary_message = None;
3559 let mut group_end = Point::zero();
3560 let diagnostic_group = buffer
3561 .diagnostic_group::<Point>(group_id)
3562 .map(|entry| {
3563 if entry.range.end > group_end {
3564 group_end = entry.range.end;
3565 }
3566 if entry.diagnostic.is_primary {
3567 primary_range = Some(entry.range.clone());
3568 primary_message = Some(entry.diagnostic.message.clone());
3569 }
3570 entry
3571 })
3572 .collect::<Vec<_>>();
3573 let primary_range = primary_range.unwrap();
3574 let primary_message = primary_message.unwrap();
3575 let primary_range =
3576 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
3577
3578 let blocks = display_map
3579 .insert_blocks(
3580 diagnostic_group.iter().map(|entry| {
3581 let build_settings = self.build_settings.clone();
3582 let diagnostic = entry.diagnostic.clone();
3583 let message_height = diagnostic.message.lines().count() as u8;
3584
3585 BlockProperties {
3586 position: buffer.anchor_after(entry.range.start),
3587 height: message_height,
3588 render: diagnostic_block_renderer(diagnostic, true, build_settings),
3589 disposition: BlockDisposition::Below,
3590 }
3591 }),
3592 cx,
3593 )
3594 .into_iter()
3595 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
3596 .collect();
3597
3598 Some(ActiveDiagnosticGroup {
3599 primary_range,
3600 primary_message,
3601 blocks,
3602 is_valid: true,
3603 })
3604 });
3605 }
3606
3607 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
3608 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
3609 self.display_map.update(cx, |display_map, cx| {
3610 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
3611 });
3612 cx.notify();
3613 }
3614 }
3615
3616 fn build_columnar_selection(
3617 &mut self,
3618 display_map: &DisplaySnapshot,
3619 row: u32,
3620 columns: &Range<u32>,
3621 reversed: bool,
3622 ) -> Option<Selection<Point>> {
3623 let is_empty = columns.start == columns.end;
3624 let line_len = display_map.line_len(row);
3625 if columns.start < line_len || (is_empty && columns.start == line_len) {
3626 let start = DisplayPoint::new(row, columns.start);
3627 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
3628 Some(Selection {
3629 id: post_inc(&mut self.next_selection_id),
3630 start: start.to_point(display_map),
3631 end: end.to_point(display_map),
3632 reversed,
3633 goal: SelectionGoal::ColumnRange {
3634 start: columns.start,
3635 end: columns.end,
3636 },
3637 })
3638 } else {
3639 None
3640 }
3641 }
3642
3643 pub fn local_selections_in_range(
3644 &self,
3645 range: Range<Anchor>,
3646 display_map: &DisplaySnapshot,
3647 ) -> Vec<Selection<Point>> {
3648 let buffer = &display_map.buffer_snapshot;
3649
3650 let start_ix = match self
3651 .selections
3652 .binary_search_by(|probe| probe.end.cmp(&range.start, &buffer).unwrap())
3653 {
3654 Ok(ix) | Err(ix) => ix,
3655 };
3656 let end_ix = match self
3657 .selections
3658 .binary_search_by(|probe| probe.start.cmp(&range.end, &buffer).unwrap())
3659 {
3660 Ok(ix) => ix + 1,
3661 Err(ix) => ix,
3662 };
3663
3664 fn point_selection(
3665 selection: &Selection<Anchor>,
3666 buffer: &MultiBufferSnapshot,
3667 ) -> Selection<Point> {
3668 let start = selection.start.to_point(&buffer);
3669 let end = selection.end.to_point(&buffer);
3670 Selection {
3671 id: selection.id,
3672 start,
3673 end,
3674 reversed: selection.reversed,
3675 goal: selection.goal,
3676 }
3677 }
3678
3679 self.selections[start_ix..end_ix]
3680 .iter()
3681 .chain(
3682 self.pending_selection
3683 .as_ref()
3684 .map(|pending| &pending.selection),
3685 )
3686 .map(|s| point_selection(s, &buffer))
3687 .collect()
3688 }
3689
3690 pub fn local_selections<'a, D>(&self, cx: &'a AppContext) -> Vec<Selection<D>>
3691 where
3692 D: 'a + TextDimension + Ord + Sub<D, Output = D>,
3693 {
3694 let buffer = self.buffer.read(cx).snapshot(cx);
3695 let mut selections = self
3696 .resolve_selections::<D, _>(self.selections.iter(), &buffer)
3697 .peekable();
3698
3699 let mut pending_selection = self.pending_selection::<D>(&buffer);
3700
3701 iter::from_fn(move || {
3702 if let Some(pending) = pending_selection.as_mut() {
3703 while let Some(next_selection) = selections.peek() {
3704 if pending.start <= next_selection.end && pending.end >= next_selection.start {
3705 let next_selection = selections.next().unwrap();
3706 if next_selection.start < pending.start {
3707 pending.start = next_selection.start;
3708 }
3709 if next_selection.end > pending.end {
3710 pending.end = next_selection.end;
3711 }
3712 } else if next_selection.end < pending.start {
3713 return selections.next();
3714 } else {
3715 break;
3716 }
3717 }
3718
3719 pending_selection.take()
3720 } else {
3721 selections.next()
3722 }
3723 })
3724 .collect()
3725 }
3726
3727 fn resolve_selections<'a, D, I>(
3728 &self,
3729 selections: I,
3730 snapshot: &MultiBufferSnapshot,
3731 ) -> impl 'a + Iterator<Item = Selection<D>>
3732 where
3733 D: TextDimension + Ord + Sub<D, Output = D>,
3734 I: 'a + IntoIterator<Item = &'a Selection<Anchor>>,
3735 {
3736 let (to_summarize, selections) = selections.into_iter().tee();
3737 let mut summaries = snapshot
3738 .summaries_for_anchors::<D, _>(to_summarize.flat_map(|s| [&s.start, &s.end]))
3739 .into_iter();
3740 selections.map(move |s| Selection {
3741 id: s.id,
3742 start: summaries.next().unwrap(),
3743 end: summaries.next().unwrap(),
3744 reversed: s.reversed,
3745 goal: s.goal,
3746 })
3747 }
3748
3749 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3750 &self,
3751 snapshot: &MultiBufferSnapshot,
3752 ) -> Option<Selection<D>> {
3753 self.pending_selection
3754 .as_ref()
3755 .map(|pending| self.resolve_selection(&pending.selection, &snapshot))
3756 }
3757
3758 fn resolve_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3759 &self,
3760 selection: &Selection<Anchor>,
3761 buffer: &MultiBufferSnapshot,
3762 ) -> Selection<D> {
3763 Selection {
3764 id: selection.id,
3765 start: selection.start.summary::<D>(&buffer),
3766 end: selection.end.summary::<D>(&buffer),
3767 reversed: selection.reversed,
3768 goal: selection.goal,
3769 }
3770 }
3771
3772 fn selection_count<'a>(&self) -> usize {
3773 let mut count = self.selections.len();
3774 if self.pending_selection.is_some() {
3775 count += 1;
3776 }
3777 count
3778 }
3779
3780 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3781 &self,
3782 snapshot: &MultiBufferSnapshot,
3783 ) -> Selection<D> {
3784 self.selections
3785 .iter()
3786 .min_by_key(|s| s.id)
3787 .map(|selection| self.resolve_selection(selection, snapshot))
3788 .or_else(|| self.pending_selection(snapshot))
3789 .unwrap()
3790 }
3791
3792 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3793 &self,
3794 snapshot: &MultiBufferSnapshot,
3795 ) -> Selection<D> {
3796 self.resolve_selection(self.newest_anchor_selection().unwrap(), snapshot)
3797 }
3798
3799 pub fn newest_anchor_selection(&self) -> Option<&Selection<Anchor>> {
3800 self.pending_selection
3801 .as_ref()
3802 .map(|s| &s.selection)
3803 .or_else(|| self.selections.iter().max_by_key(|s| s.id))
3804 }
3805
3806 pub fn update_selections<T>(
3807 &mut self,
3808 mut selections: Vec<Selection<T>>,
3809 autoscroll: Option<Autoscroll>,
3810 cx: &mut ViewContext<Self>,
3811 ) where
3812 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
3813 {
3814 let buffer = self.buffer.read(cx).snapshot(cx);
3815 selections.sort_unstable_by_key(|s| s.start);
3816
3817 // Merge overlapping selections.
3818 let mut i = 1;
3819 while i < selections.len() {
3820 if selections[i - 1].end >= selections[i].start {
3821 let removed = selections.remove(i);
3822 if removed.start < selections[i - 1].start {
3823 selections[i - 1].start = removed.start;
3824 }
3825 if removed.end > selections[i - 1].end {
3826 selections[i - 1].end = removed.end;
3827 }
3828 } else {
3829 i += 1;
3830 }
3831 }
3832
3833 if let Some(autoscroll) = autoscroll {
3834 self.request_autoscroll(autoscroll, cx);
3835 }
3836
3837 self.set_selections(
3838 Arc::from_iter(selections.into_iter().map(|selection| {
3839 let end_bias = if selection.end > selection.start {
3840 Bias::Left
3841 } else {
3842 Bias::Right
3843 };
3844 Selection {
3845 id: selection.id,
3846 start: buffer.anchor_after(selection.start),
3847 end: buffer.anchor_at(selection.end, end_bias),
3848 reversed: selection.reversed,
3849 goal: selection.goal,
3850 }
3851 })),
3852 cx,
3853 );
3854 }
3855
3856 /// Compute new ranges for any selections that were located in excerpts that have
3857 /// since been removed.
3858 ///
3859 /// Returns a `HashMap` indicating which selections whose former head position
3860 /// was no longer present. The keys of the map are selection ids. The values are
3861 /// the id of the new excerpt where the head of the selection has been moved.
3862 pub fn refresh_selections(&mut self, cx: &mut ViewContext<Self>) -> HashMap<usize, ExcerptId> {
3863 let snapshot = self.buffer.read(cx).read(cx);
3864 let anchors_with_status = snapshot.refresh_anchors(
3865 self.selections
3866 .iter()
3867 .flat_map(|selection| [&selection.start, &selection.end]),
3868 );
3869 let offsets =
3870 snapshot.summaries_for_anchors::<usize, _>(anchors_with_status.iter().map(|a| &a.1));
3871 let offsets = offsets.chunks(2);
3872 let statuses = anchors_with_status
3873 .chunks(2)
3874 .map(|a| (a[0].0 / 2, a[0].2, a[1].2));
3875
3876 let mut selections_with_lost_position = HashMap::default();
3877 let new_selections = offsets
3878 .zip(statuses)
3879 .map(|(offsets, (selection_ix, kept_start, kept_end))| {
3880 let selection = &self.selections[selection_ix];
3881 let kept_head = if selection.reversed {
3882 kept_start
3883 } else {
3884 kept_end
3885 };
3886 if !kept_head {
3887 selections_with_lost_position
3888 .insert(selection.id, selection.head().excerpt_id.clone());
3889 }
3890
3891 Selection {
3892 id: selection.id,
3893 start: offsets[0],
3894 end: offsets[1],
3895 reversed: selection.reversed,
3896 goal: selection.goal,
3897 }
3898 })
3899 .collect();
3900 drop(snapshot);
3901 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3902 selections_with_lost_position
3903 }
3904
3905 fn set_selections(&mut self, selections: Arc<[Selection<Anchor>]>, cx: &mut ViewContext<Self>) {
3906 let old_cursor_position = self.newest_anchor_selection().map(|s| s.head());
3907 self.selections = selections;
3908 if self.focused {
3909 self.buffer.update(cx, |buffer, cx| {
3910 buffer.set_active_selections(&self.selections, cx)
3911 });
3912 }
3913
3914 let buffer = self.buffer.read(cx).snapshot(cx);
3915 self.pending_selection = None;
3916 self.add_selections_state = None;
3917 self.select_next_state = None;
3918 self.select_larger_syntax_node_stack.clear();
3919 self.autoclose_stack.invalidate(&self.selections, &buffer);
3920 self.snippet_stack.invalidate(&self.selections, &buffer);
3921
3922 let new_cursor_position = self
3923 .selections
3924 .iter()
3925 .max_by_key(|s| s.id)
3926 .map(|s| s.head());
3927 if let Some(old_cursor_position) = old_cursor_position {
3928 if let Some(new_cursor_position) = new_cursor_position.as_ref() {
3929 self.push_to_nav_history(
3930 old_cursor_position,
3931 Some(new_cursor_position.to_point(&buffer)),
3932 cx,
3933 );
3934 }
3935 }
3936
3937 if let Some((completion_state, cursor_position)) =
3938 self.completion_state.as_mut().zip(new_cursor_position)
3939 {
3940 let cursor_position = cursor_position.to_offset(&buffer);
3941 let (word_range, kind) =
3942 buffer.surrounding_word(completion_state.initial_position.clone());
3943 if kind == Some(CharKind::Word) && word_range.to_inclusive().contains(&cursor_position)
3944 {
3945 let query = Self::completion_query(&buffer, cursor_position);
3946 smol::block_on(completion_state.filter(query.as_deref(), cx.background().clone()));
3947 self.show_completions(&ShowCompletions, cx);
3948 } else {
3949 self.hide_completions(cx);
3950 }
3951 }
3952
3953 self.pause_cursor_blinking(cx);
3954 cx.emit(Event::SelectionsChanged);
3955 }
3956
3957 pub fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
3958 self.autoscroll_request = Some(autoscroll);
3959 cx.notify();
3960 }
3961
3962 fn start_transaction(&mut self, cx: &mut ViewContext<Self>) {
3963 self.start_transaction_at(Instant::now(), cx);
3964 }
3965
3966 fn start_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
3967 self.end_selection(cx);
3968 if let Some(tx_id) = self
3969 .buffer
3970 .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
3971 {
3972 self.selection_history
3973 .insert(tx_id, (self.selections.clone(), None));
3974 }
3975 }
3976
3977 fn end_transaction(&mut self, cx: &mut ViewContext<Self>) {
3978 self.end_transaction_at(Instant::now(), cx);
3979 }
3980
3981 fn end_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
3982 if let Some(tx_id) = self
3983 .buffer
3984 .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
3985 {
3986 if let Some((_, end_selections)) = self.selection_history.get_mut(&tx_id) {
3987 *end_selections = Some(self.selections.clone());
3988 } else {
3989 log::error!("unexpectedly ended a transaction that wasn't started by this editor");
3990 }
3991 }
3992 }
3993
3994 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
3995 log::info!("Editor::page_up");
3996 }
3997
3998 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
3999 log::info!("Editor::page_down");
4000 }
4001
4002 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
4003 let mut fold_ranges = Vec::new();
4004
4005 let selections = self.local_selections::<Point>(cx);
4006 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4007 for selection in selections {
4008 let range = selection.display_range(&display_map).sorted();
4009 let buffer_start_row = range.start.to_point(&display_map).row;
4010
4011 for row in (0..=range.end.row()).rev() {
4012 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
4013 let fold_range = self.foldable_range_for_line(&display_map, row);
4014 if fold_range.end.row >= buffer_start_row {
4015 fold_ranges.push(fold_range);
4016 if row <= range.start.row() {
4017 break;
4018 }
4019 }
4020 }
4021 }
4022 }
4023
4024 self.fold_ranges(fold_ranges, cx);
4025 }
4026
4027 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
4028 let selections = self.local_selections::<Point>(cx);
4029 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4030 let buffer = &display_map.buffer_snapshot;
4031 let ranges = selections
4032 .iter()
4033 .map(|s| {
4034 let range = s.display_range(&display_map).sorted();
4035 let mut start = range.start.to_point(&display_map);
4036 let mut end = range.end.to_point(&display_map);
4037 start.column = 0;
4038 end.column = buffer.line_len(end.row);
4039 start..end
4040 })
4041 .collect::<Vec<_>>();
4042 self.unfold_ranges(ranges, cx);
4043 }
4044
4045 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
4046 let max_point = display_map.max_point();
4047 if display_row >= max_point.row() {
4048 false
4049 } else {
4050 let (start_indent, is_blank) = display_map.line_indent(display_row);
4051 if is_blank {
4052 false
4053 } else {
4054 for display_row in display_row + 1..=max_point.row() {
4055 let (indent, is_blank) = display_map.line_indent(display_row);
4056 if !is_blank {
4057 return indent > start_indent;
4058 }
4059 }
4060 false
4061 }
4062 }
4063 }
4064
4065 fn foldable_range_for_line(
4066 &self,
4067 display_map: &DisplaySnapshot,
4068 start_row: u32,
4069 ) -> Range<Point> {
4070 let max_point = display_map.max_point();
4071
4072 let (start_indent, _) = display_map.line_indent(start_row);
4073 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
4074 let mut end = None;
4075 for row in start_row + 1..=max_point.row() {
4076 let (indent, is_blank) = display_map.line_indent(row);
4077 if !is_blank && indent <= start_indent {
4078 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
4079 break;
4080 }
4081 }
4082
4083 let end = end.unwrap_or(max_point);
4084 return start.to_point(display_map)..end.to_point(display_map);
4085 }
4086
4087 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
4088 let selections = self.local_selections::<Point>(cx);
4089 let ranges = selections.into_iter().map(|s| s.start..s.end);
4090 self.fold_ranges(ranges, cx);
4091 }
4092
4093 fn fold_ranges<T: ToOffset>(
4094 &mut self,
4095 ranges: impl IntoIterator<Item = Range<T>>,
4096 cx: &mut ViewContext<Self>,
4097 ) {
4098 let mut ranges = ranges.into_iter().peekable();
4099 if ranges.peek().is_some() {
4100 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
4101 self.request_autoscroll(Autoscroll::Fit, cx);
4102 cx.notify();
4103 }
4104 }
4105
4106 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
4107 if !ranges.is_empty() {
4108 self.display_map
4109 .update(cx, |map, cx| map.unfold(ranges, cx));
4110 self.request_autoscroll(Autoscroll::Fit, cx);
4111 cx.notify();
4112 }
4113 }
4114
4115 pub fn insert_blocks(
4116 &mut self,
4117 blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
4118 cx: &mut ViewContext<Self>,
4119 ) -> Vec<BlockId> {
4120 let blocks = self
4121 .display_map
4122 .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
4123 self.request_autoscroll(Autoscroll::Fit, cx);
4124 blocks
4125 }
4126
4127 pub fn replace_blocks(
4128 &mut self,
4129 blocks: HashMap<BlockId, RenderBlock>,
4130 cx: &mut ViewContext<Self>,
4131 ) {
4132 self.display_map
4133 .update(cx, |display_map, _| display_map.replace_blocks(blocks));
4134 self.request_autoscroll(Autoscroll::Fit, cx);
4135 }
4136
4137 pub fn remove_blocks(&mut self, block_ids: HashSet<BlockId>, cx: &mut ViewContext<Self>) {
4138 self.display_map.update(cx, |display_map, cx| {
4139 display_map.remove_blocks(block_ids, cx)
4140 });
4141 }
4142
4143 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
4144 self.display_map
4145 .update(cx, |map, cx| map.snapshot(cx))
4146 .longest_row()
4147 }
4148
4149 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
4150 self.display_map
4151 .update(cx, |map, cx| map.snapshot(cx))
4152 .max_point()
4153 }
4154
4155 pub fn text(&self, cx: &AppContext) -> String {
4156 self.buffer.read(cx).read(cx).text()
4157 }
4158
4159 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
4160 self.display_map
4161 .update(cx, |map, cx| map.snapshot(cx))
4162 .text()
4163 }
4164
4165 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
4166 self.display_map
4167 .update(cx, |map, cx| map.set_wrap_width(width, cx))
4168 }
4169
4170 pub fn set_highlighted_rows(&mut self, rows: Option<Range<u32>>) {
4171 self.highlighted_rows = rows;
4172 }
4173
4174 pub fn highlighted_rows(&self) -> Option<Range<u32>> {
4175 self.highlighted_rows.clone()
4176 }
4177
4178 pub fn highlight_ranges<T: 'static>(
4179 &mut self,
4180 ranges: Vec<Range<Anchor>>,
4181 color: Color,
4182 cx: &mut ViewContext<Self>,
4183 ) {
4184 self.highlighted_ranges
4185 .insert(TypeId::of::<T>(), (color, ranges));
4186 cx.notify();
4187 }
4188
4189 pub fn clear_highlighted_ranges<T: 'static>(&mut self, cx: &mut ViewContext<Self>) {
4190 self.highlighted_ranges.remove(&TypeId::of::<T>());
4191 cx.notify();
4192 }
4193
4194 #[cfg(feature = "test-support")]
4195 pub fn all_highlighted_ranges(
4196 &mut self,
4197 cx: &mut ViewContext<Self>,
4198 ) -> Vec<(Range<DisplayPoint>, Color)> {
4199 let snapshot = self.snapshot(cx);
4200 let buffer = &snapshot.buffer_snapshot;
4201 let start = buffer.anchor_before(0);
4202 let end = buffer.anchor_after(buffer.len());
4203 self.highlighted_ranges_in_range(start..end, &snapshot)
4204 }
4205
4206 pub fn highlighted_ranges_for_type<T: 'static>(&self) -> Option<(Color, &[Range<Anchor>])> {
4207 self.highlighted_ranges
4208 .get(&TypeId::of::<T>())
4209 .map(|(color, ranges)| (*color, ranges.as_slice()))
4210 }
4211
4212 pub fn highlighted_ranges_in_range(
4213 &self,
4214 search_range: Range<Anchor>,
4215 display_snapshot: &DisplaySnapshot,
4216 ) -> Vec<(Range<DisplayPoint>, Color)> {
4217 let mut results = Vec::new();
4218 let buffer = &display_snapshot.buffer_snapshot;
4219 for (color, ranges) in self.highlighted_ranges.values() {
4220 let start_ix = match ranges.binary_search_by(|probe| {
4221 let cmp = probe.end.cmp(&search_range.start, &buffer).unwrap();
4222 if cmp.is_gt() {
4223 Ordering::Greater
4224 } else {
4225 Ordering::Less
4226 }
4227 }) {
4228 Ok(i) | Err(i) => i,
4229 };
4230 for range in &ranges[start_ix..] {
4231 if range.start.cmp(&search_range.end, &buffer).unwrap().is_ge() {
4232 break;
4233 }
4234 let start = range
4235 .start
4236 .to_point(buffer)
4237 .to_display_point(display_snapshot);
4238 let end = range
4239 .end
4240 .to_point(buffer)
4241 .to_display_point(display_snapshot);
4242 results.push((start..end, *color))
4243 }
4244 }
4245 results
4246 }
4247
4248 fn next_blink_epoch(&mut self) -> usize {
4249 self.blink_epoch += 1;
4250 self.blink_epoch
4251 }
4252
4253 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
4254 if !self.focused {
4255 return;
4256 }
4257
4258 self.show_local_cursors = true;
4259 cx.notify();
4260
4261 let epoch = self.next_blink_epoch();
4262 cx.spawn(|this, mut cx| {
4263 let this = this.downgrade();
4264 async move {
4265 Timer::after(CURSOR_BLINK_INTERVAL).await;
4266 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
4267 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
4268 }
4269 }
4270 })
4271 .detach();
4272 }
4273
4274 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
4275 if epoch == self.blink_epoch {
4276 self.blinking_paused = false;
4277 self.blink_cursors(epoch, cx);
4278 }
4279 }
4280
4281 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
4282 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
4283 self.show_local_cursors = !self.show_local_cursors;
4284 cx.notify();
4285
4286 let epoch = self.next_blink_epoch();
4287 cx.spawn(|this, mut cx| {
4288 let this = this.downgrade();
4289 async move {
4290 Timer::after(CURSOR_BLINK_INTERVAL).await;
4291 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
4292 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
4293 }
4294 }
4295 })
4296 .detach();
4297 }
4298 }
4299
4300 pub fn show_local_cursors(&self) -> bool {
4301 self.show_local_cursors
4302 }
4303
4304 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
4305 self.refresh_active_diagnostics(cx);
4306 cx.notify();
4307 }
4308
4309 fn on_buffer_event(
4310 &mut self,
4311 _: ModelHandle<MultiBuffer>,
4312 event: &language::Event,
4313 cx: &mut ViewContext<Self>,
4314 ) {
4315 match event {
4316 language::Event::Edited => cx.emit(Event::Edited),
4317 language::Event::Dirtied => cx.emit(Event::Dirtied),
4318 language::Event::Saved => cx.emit(Event::Saved),
4319 language::Event::FileHandleChanged => cx.emit(Event::TitleChanged),
4320 language::Event::Reloaded => cx.emit(Event::TitleChanged),
4321 language::Event::Closed => cx.emit(Event::Closed),
4322 _ => {}
4323 }
4324 }
4325
4326 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
4327 cx.notify();
4328 }
4329}
4330
4331impl EditorSnapshot {
4332 pub fn is_focused(&self) -> bool {
4333 self.is_focused
4334 }
4335
4336 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
4337 self.placeholder_text.as_ref()
4338 }
4339
4340 pub fn scroll_position(&self) -> Vector2F {
4341 compute_scroll_position(
4342 &self.display_snapshot,
4343 self.scroll_position,
4344 &self.scroll_top_anchor,
4345 )
4346 }
4347}
4348
4349impl Deref for EditorSnapshot {
4350 type Target = DisplaySnapshot;
4351
4352 fn deref(&self) -> &Self::Target {
4353 &self.display_snapshot
4354 }
4355}
4356
4357impl EditorSettings {
4358 #[cfg(any(test, feature = "test-support"))]
4359 pub fn test(cx: &AppContext) -> Self {
4360 use theme::{ContainedLabel, ContainedText, DiagnosticHeader, DiagnosticPathHeader};
4361
4362 Self {
4363 tab_size: 4,
4364 soft_wrap: SoftWrap::None,
4365 style: {
4366 let font_cache: &gpui::FontCache = cx.font_cache();
4367 let font_family_name = Arc::from("Monaco");
4368 let font_properties = Default::default();
4369 let font_family_id = font_cache.load_family(&[&font_family_name]).unwrap();
4370 let font_id = font_cache
4371 .select_font(font_family_id, &font_properties)
4372 .unwrap();
4373 let text = gpui::fonts::TextStyle {
4374 font_family_name,
4375 font_family_id,
4376 font_id,
4377 font_size: 14.,
4378 color: gpui::color::Color::from_u32(0xff0000ff),
4379 font_properties,
4380 underline: None,
4381 };
4382 let default_diagnostic_style = DiagnosticStyle {
4383 message: text.clone().into(),
4384 header: Default::default(),
4385 text_scale_factor: 1.,
4386 };
4387 EditorStyle {
4388 text: text.clone(),
4389 placeholder_text: None,
4390 background: Default::default(),
4391 gutter_background: Default::default(),
4392 gutter_padding_factor: 2.,
4393 active_line_background: Default::default(),
4394 highlighted_line_background: Default::default(),
4395 line_number: Default::default(),
4396 line_number_active: Default::default(),
4397 selection: Default::default(),
4398 guest_selections: Default::default(),
4399 syntax: Default::default(),
4400 diagnostic_path_header: DiagnosticPathHeader {
4401 container: Default::default(),
4402 filename: ContainedText {
4403 container: Default::default(),
4404 text: text.clone(),
4405 },
4406 path: ContainedText {
4407 container: Default::default(),
4408 text: text.clone(),
4409 },
4410 text_scale_factor: 1.,
4411 },
4412 diagnostic_header: DiagnosticHeader {
4413 container: Default::default(),
4414 message: ContainedLabel {
4415 container: Default::default(),
4416 label: text.clone().into(),
4417 },
4418 code: ContainedText {
4419 container: Default::default(),
4420 text: text.clone(),
4421 },
4422 icon_width_factor: 1.,
4423 text_scale_factor: 1.,
4424 },
4425 error_diagnostic: default_diagnostic_style.clone(),
4426 invalid_error_diagnostic: default_diagnostic_style.clone(),
4427 warning_diagnostic: default_diagnostic_style.clone(),
4428 invalid_warning_diagnostic: default_diagnostic_style.clone(),
4429 information_diagnostic: default_diagnostic_style.clone(),
4430 invalid_information_diagnostic: default_diagnostic_style.clone(),
4431 hint_diagnostic: default_diagnostic_style.clone(),
4432 invalid_hint_diagnostic: default_diagnostic_style.clone(),
4433 autocomplete: Default::default(),
4434 }
4435 },
4436 }
4437 }
4438}
4439
4440fn compute_scroll_position(
4441 snapshot: &DisplaySnapshot,
4442 mut scroll_position: Vector2F,
4443 scroll_top_anchor: &Option<Anchor>,
4444) -> Vector2F {
4445 if let Some(anchor) = scroll_top_anchor {
4446 let scroll_top = anchor.to_display_point(snapshot).row() as f32;
4447 scroll_position.set_y(scroll_top + scroll_position.y());
4448 } else {
4449 scroll_position.set_y(0.);
4450 }
4451 scroll_position
4452}
4453
4454#[derive(Copy, Clone)]
4455pub enum Event {
4456 Activate,
4457 Edited,
4458 Blurred,
4459 Dirtied,
4460 Saved,
4461 TitleChanged,
4462 SelectionsChanged,
4463 Closed,
4464}
4465
4466impl Entity for Editor {
4467 type Event = Event;
4468}
4469
4470impl View for Editor {
4471 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
4472 let settings = (self.build_settings)(cx);
4473 self.display_map.update(cx, |map, cx| {
4474 map.set_font(
4475 settings.style.text.font_id,
4476 settings.style.text.font_size,
4477 cx,
4478 )
4479 });
4480 EditorElement::new(self.handle.clone(), settings).boxed()
4481 }
4482
4483 fn ui_name() -> &'static str {
4484 "Editor"
4485 }
4486
4487 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
4488 self.focused = true;
4489 self.blink_cursors(self.blink_epoch, cx);
4490 self.buffer.update(cx, |buffer, cx| {
4491 buffer.avoid_grouping_next_transaction(cx);
4492 buffer.set_active_selections(&self.selections, cx)
4493 });
4494 }
4495
4496 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
4497 self.focused = false;
4498 self.show_local_cursors = false;
4499 self.buffer
4500 .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
4501 self.hide_completions(cx);
4502 cx.emit(Event::Blurred);
4503 cx.notify();
4504 }
4505
4506 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
4507 let mut cx = Self::default_keymap_context();
4508 let mode = match self.mode {
4509 EditorMode::SingleLine => "single_line",
4510 EditorMode::AutoHeight { .. } => "auto_height",
4511 EditorMode::Full => "full",
4512 };
4513 cx.map.insert("mode".into(), mode.into());
4514 if self.completion_state.is_some() {
4515 cx.set.insert("completing".into());
4516 }
4517 cx
4518 }
4519}
4520
4521impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
4522 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
4523 let start = self.start.to_point(buffer);
4524 let end = self.end.to_point(buffer);
4525 if self.reversed {
4526 end..start
4527 } else {
4528 start..end
4529 }
4530 }
4531
4532 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
4533 let start = self.start.to_offset(buffer);
4534 let end = self.end.to_offset(buffer);
4535 if self.reversed {
4536 end..start
4537 } else {
4538 start..end
4539 }
4540 }
4541
4542 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
4543 let start = self
4544 .start
4545 .to_point(&map.buffer_snapshot)
4546 .to_display_point(map);
4547 let end = self
4548 .end
4549 .to_point(&map.buffer_snapshot)
4550 .to_display_point(map);
4551 if self.reversed {
4552 end..start
4553 } else {
4554 start..end
4555 }
4556 }
4557
4558 fn spanned_rows(
4559 &self,
4560 include_end_if_at_line_start: bool,
4561 map: &DisplaySnapshot,
4562 ) -> Range<u32> {
4563 let start = self.start.to_point(&map.buffer_snapshot);
4564 let mut end = self.end.to_point(&map.buffer_snapshot);
4565 if !include_end_if_at_line_start && start.row != end.row && end.column == 0 {
4566 end.row -= 1;
4567 }
4568
4569 let buffer_start = map.prev_line_boundary(start).0;
4570 let buffer_end = map.next_line_boundary(end).0;
4571 buffer_start.row..buffer_end.row + 1
4572 }
4573}
4574
4575impl<T: InvalidationRegion> InvalidationStack<T> {
4576 fn invalidate<S>(&mut self, selections: &[Selection<S>], buffer: &MultiBufferSnapshot)
4577 where
4578 S: Clone + ToOffset,
4579 {
4580 while let Some(region) = self.last() {
4581 let all_selections_inside_invalidation_ranges =
4582 if selections.len() == region.ranges().len() {
4583 selections
4584 .iter()
4585 .zip(region.ranges().iter().map(|r| r.to_offset(&buffer)))
4586 .all(|(selection, invalidation_range)| {
4587 let head = selection.head().to_offset(&buffer);
4588 invalidation_range.start <= head && invalidation_range.end >= head
4589 })
4590 } else {
4591 false
4592 };
4593
4594 if all_selections_inside_invalidation_ranges {
4595 break;
4596 } else {
4597 self.pop();
4598 }
4599 }
4600 }
4601}
4602
4603impl<T> Default for InvalidationStack<T> {
4604 fn default() -> Self {
4605 Self(Default::default())
4606 }
4607}
4608
4609impl<T> Deref for InvalidationStack<T> {
4610 type Target = Vec<T>;
4611
4612 fn deref(&self) -> &Self::Target {
4613 &self.0
4614 }
4615}
4616
4617impl<T> DerefMut for InvalidationStack<T> {
4618 fn deref_mut(&mut self) -> &mut Self::Target {
4619 &mut self.0
4620 }
4621}
4622
4623impl InvalidationRegion for BracketPairState {
4624 fn ranges(&self) -> &[Range<Anchor>] {
4625 &self.ranges
4626 }
4627}
4628
4629impl InvalidationRegion for SnippetState {
4630 fn ranges(&self) -> &[Range<Anchor>] {
4631 &self.ranges[self.active_index]
4632 }
4633}
4634
4635pub fn diagnostic_block_renderer(
4636 diagnostic: Diagnostic,
4637 is_valid: bool,
4638 build_settings: BuildSettings,
4639) -> RenderBlock {
4640 let mut highlighted_lines = Vec::new();
4641 for line in diagnostic.message.lines() {
4642 highlighted_lines.push(highlight_diagnostic_message(line));
4643 }
4644
4645 Arc::new(move |cx: &BlockContext| {
4646 let settings = build_settings(cx);
4647 let style = diagnostic_style(diagnostic.severity, is_valid, &settings.style);
4648 let font_size = (style.text_scale_factor * settings.style.text.font_size).round();
4649 Flex::column()
4650 .with_children(highlighted_lines.iter().map(|(line, highlights)| {
4651 Label::new(
4652 line.clone(),
4653 style.message.clone().with_font_size(font_size),
4654 )
4655 .with_highlights(highlights.clone())
4656 .contained()
4657 .with_margin_left(cx.anchor_x)
4658 .boxed()
4659 }))
4660 .aligned()
4661 .left()
4662 .boxed()
4663 })
4664}
4665
4666pub fn highlight_diagnostic_message(message: &str) -> (String, Vec<usize>) {
4667 let mut message_without_backticks = String::new();
4668 let mut prev_offset = 0;
4669 let mut inside_block = false;
4670 let mut highlights = Vec::new();
4671 for (match_ix, (offset, _)) in message
4672 .match_indices('`')
4673 .chain([(message.len(), "")])
4674 .enumerate()
4675 {
4676 message_without_backticks.push_str(&message[prev_offset..offset]);
4677 if inside_block {
4678 highlights.extend(prev_offset - match_ix..offset - match_ix);
4679 }
4680
4681 inside_block = !inside_block;
4682 prev_offset = offset + 1;
4683 }
4684
4685 (message_without_backticks, highlights)
4686}
4687
4688pub fn diagnostic_style(
4689 severity: DiagnosticSeverity,
4690 valid: bool,
4691 style: &EditorStyle,
4692) -> DiagnosticStyle {
4693 match (severity, valid) {
4694 (DiagnosticSeverity::ERROR, true) => style.error_diagnostic.clone(),
4695 (DiagnosticSeverity::ERROR, false) => style.invalid_error_diagnostic.clone(),
4696 (DiagnosticSeverity::WARNING, true) => style.warning_diagnostic.clone(),
4697 (DiagnosticSeverity::WARNING, false) => style.invalid_warning_diagnostic.clone(),
4698 (DiagnosticSeverity::INFORMATION, true) => style.information_diagnostic.clone(),
4699 (DiagnosticSeverity::INFORMATION, false) => style.invalid_information_diagnostic.clone(),
4700 (DiagnosticSeverity::HINT, true) => style.hint_diagnostic.clone(),
4701 (DiagnosticSeverity::HINT, false) => style.invalid_hint_diagnostic.clone(),
4702 _ => DiagnosticStyle {
4703 message: style.text.clone().into(),
4704 header: Default::default(),
4705 text_scale_factor: 1.,
4706 },
4707 }
4708}
4709
4710pub fn settings_builder(
4711 buffer: WeakModelHandle<MultiBuffer>,
4712 settings: watch::Receiver<workspace::Settings>,
4713) -> BuildSettings {
4714 Arc::new(move |cx| {
4715 let settings = settings.borrow();
4716 let font_cache = cx.font_cache();
4717 let font_family_id = settings.buffer_font_family;
4718 let font_family_name = cx.font_cache().family_name(font_family_id).unwrap();
4719 let font_properties = Default::default();
4720 let font_id = font_cache
4721 .select_font(font_family_id, &font_properties)
4722 .unwrap();
4723 let font_size = settings.buffer_font_size;
4724
4725 let mut theme = settings.theme.editor.clone();
4726 theme.text = TextStyle {
4727 color: theme.text.color,
4728 font_family_name,
4729 font_family_id,
4730 font_id,
4731 font_size,
4732 font_properties,
4733 underline: None,
4734 };
4735 let language = buffer.upgrade(cx).and_then(|buf| buf.read(cx).language(cx));
4736 let soft_wrap = match settings.soft_wrap(language) {
4737 workspace::settings::SoftWrap::None => SoftWrap::None,
4738 workspace::settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
4739 workspace::settings::SoftWrap::PreferredLineLength => {
4740 SoftWrap::Column(settings.preferred_line_length(language).saturating_sub(1))
4741 }
4742 };
4743
4744 EditorSettings {
4745 tab_size: settings.tab_size,
4746 soft_wrap,
4747 style: theme,
4748 }
4749 })
4750}
4751
4752pub fn combine_syntax_and_fuzzy_match_highlights(
4753 text: &str,
4754 default_style: HighlightStyle,
4755 syntax_ranges: impl Iterator<Item = (Range<usize>, HighlightStyle)>,
4756 match_indices: &[usize],
4757) -> Vec<(Range<usize>, HighlightStyle)> {
4758 let mut result = Vec::new();
4759 let mut match_indices = match_indices.iter().copied().peekable();
4760
4761 for (range, mut syntax_highlight) in syntax_ranges.chain([(usize::MAX..0, Default::default())])
4762 {
4763 syntax_highlight.font_properties.weight(Default::default());
4764
4765 // Add highlights for any fuzzy match characters before the next
4766 // syntax highlight range.
4767 while let Some(&match_index) = match_indices.peek() {
4768 if match_index >= range.start {
4769 break;
4770 }
4771 match_indices.next();
4772 let end_index = char_ix_after(match_index, text);
4773 let mut match_style = default_style;
4774 match_style.font_properties.weight(fonts::Weight::BOLD);
4775 result.push((match_index..end_index, match_style));
4776 }
4777
4778 if range.start == usize::MAX {
4779 break;
4780 }
4781
4782 // Add highlights for any fuzzy match characters within the
4783 // syntax highlight range.
4784 let mut offset = range.start;
4785 while let Some(&match_index) = match_indices.peek() {
4786 if match_index >= range.end {
4787 break;
4788 }
4789
4790 match_indices.next();
4791 if match_index > offset {
4792 result.push((offset..match_index, syntax_highlight));
4793 }
4794
4795 let mut end_index = char_ix_after(match_index, text);
4796 while let Some(&next_match_index) = match_indices.peek() {
4797 if next_match_index == end_index && next_match_index < range.end {
4798 end_index = char_ix_after(next_match_index, text);
4799 match_indices.next();
4800 } else {
4801 break;
4802 }
4803 }
4804
4805 let mut match_style = syntax_highlight;
4806 match_style.font_properties.weight(fonts::Weight::BOLD);
4807 result.push((match_index..end_index, match_style));
4808 offset = end_index;
4809 }
4810
4811 if offset < range.end {
4812 result.push((offset..range.end, syntax_highlight));
4813 }
4814 }
4815
4816 fn char_ix_after(ix: usize, text: &str) -> usize {
4817 ix + text[ix..].chars().next().unwrap().len_utf8()
4818 }
4819
4820 result
4821}
4822
4823fn styled_runs_for_completion_label<'a>(
4824 label: &'a CompletionLabel,
4825 default_color: Color,
4826 syntax_theme: &'a theme::SyntaxTheme,
4827) -> impl 'a + Iterator<Item = (Range<usize>, HighlightStyle)> {
4828 const MUTED_OPACITY: usize = 165;
4829
4830 let mut muted_default_style = HighlightStyle {
4831 color: default_color,
4832 ..Default::default()
4833 };
4834 muted_default_style.color.a = ((default_color.a as usize * MUTED_OPACITY) / 255) as u8;
4835
4836 let mut prev_end = label.filter_range.end;
4837 label
4838 .runs
4839 .iter()
4840 .enumerate()
4841 .flat_map(move |(ix, (range, highlight_id))| {
4842 let style = if let Some(style) = highlight_id.style(syntax_theme) {
4843 style
4844 } else {
4845 return Default::default();
4846 };
4847 let mut muted_style = style.clone();
4848 muted_style.color.a = ((style.color.a as usize * MUTED_OPACITY) / 255) as u8;
4849
4850 let mut runs = SmallVec::<[(Range<usize>, HighlightStyle); 3]>::new();
4851 if range.start >= label.filter_range.end {
4852 if range.start > prev_end {
4853 runs.push((prev_end..range.start, muted_default_style));
4854 }
4855 runs.push((range.clone(), muted_style));
4856 } else if range.end <= label.filter_range.end {
4857 runs.push((range.clone(), style));
4858 } else {
4859 runs.push((range.start..label.filter_range.end, style));
4860 runs.push((label.filter_range.end..range.end, muted_style));
4861 }
4862 prev_end = cmp::max(prev_end, range.end);
4863
4864 if ix + 1 == label.runs.len() && label.text.len() > prev_end {
4865 runs.push((prev_end..label.text.len(), muted_default_style));
4866 }
4867
4868 runs
4869 })
4870}
4871
4872#[cfg(test)]
4873mod tests {
4874 use super::*;
4875 use language::{FakeFile, LanguageConfig};
4876 use std::{cell::RefCell, path::Path, rc::Rc, time::Instant};
4877 use text::Point;
4878 use unindent::Unindent;
4879 use util::test::sample_text;
4880
4881 #[gpui::test]
4882 fn test_undo_redo_with_selection_restoration(cx: &mut MutableAppContext) {
4883 let mut now = Instant::now();
4884 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
4885 let group_interval = buffer.read(cx).transaction_group_interval();
4886 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
4887 let settings = EditorSettings::test(cx);
4888 let (_, editor) = cx.add_window(Default::default(), |cx| {
4889 build_editor(buffer.clone(), settings, cx)
4890 });
4891
4892 editor.update(cx, |editor, cx| {
4893 editor.start_transaction_at(now, cx);
4894 editor.select_ranges([2..4], None, cx);
4895 editor.insert("cd", cx);
4896 editor.end_transaction_at(now, cx);
4897 assert_eq!(editor.text(cx), "12cd56");
4898 assert_eq!(editor.selected_ranges(cx), vec![4..4]);
4899
4900 editor.start_transaction_at(now, cx);
4901 editor.select_ranges([4..5], None, cx);
4902 editor.insert("e", cx);
4903 editor.end_transaction_at(now, cx);
4904 assert_eq!(editor.text(cx), "12cde6");
4905 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
4906
4907 now += group_interval + Duration::from_millis(1);
4908 editor.select_ranges([2..2], None, cx);
4909
4910 // Simulate an edit in another editor
4911 buffer.update(cx, |buffer, cx| {
4912 buffer.start_transaction_at(now, cx);
4913 buffer.edit([0..1], "a", cx);
4914 buffer.edit([1..1], "b", cx);
4915 buffer.end_transaction_at(now, cx);
4916 });
4917
4918 assert_eq!(editor.text(cx), "ab2cde6");
4919 assert_eq!(editor.selected_ranges(cx), vec![3..3]);
4920
4921 // Last transaction happened past the group interval in a different editor.
4922 // Undo it individually and don't restore selections.
4923 editor.undo(&Undo, cx);
4924 assert_eq!(editor.text(cx), "12cde6");
4925 assert_eq!(editor.selected_ranges(cx), vec![2..2]);
4926
4927 // First two transactions happened within the group interval in this editor.
4928 // Undo them together and restore selections.
4929 editor.undo(&Undo, cx);
4930 editor.undo(&Undo, cx); // Undo stack is empty here, so this is a no-op.
4931 assert_eq!(editor.text(cx), "123456");
4932 assert_eq!(editor.selected_ranges(cx), vec![0..0]);
4933
4934 // Redo the first two transactions together.
4935 editor.redo(&Redo, cx);
4936 assert_eq!(editor.text(cx), "12cde6");
4937 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
4938
4939 // Redo the last transaction on its own.
4940 editor.redo(&Redo, cx);
4941 assert_eq!(editor.text(cx), "ab2cde6");
4942 assert_eq!(editor.selected_ranges(cx), vec![6..6]);
4943
4944 // Test empty transactions.
4945 editor.start_transaction_at(now, cx);
4946 editor.end_transaction_at(now, cx);
4947 editor.undo(&Undo, cx);
4948 assert_eq!(editor.text(cx), "12cde6");
4949 });
4950 }
4951
4952 #[gpui::test]
4953 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
4954 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
4955 let settings = EditorSettings::test(cx);
4956 let (_, editor) =
4957 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4958
4959 editor.update(cx, |view, cx| {
4960 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
4961 });
4962
4963 assert_eq!(
4964 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4965 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
4966 );
4967
4968 editor.update(cx, |view, cx| {
4969 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
4970 });
4971
4972 assert_eq!(
4973 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4974 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
4975 );
4976
4977 editor.update(cx, |view, cx| {
4978 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
4979 });
4980
4981 assert_eq!(
4982 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4983 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
4984 );
4985
4986 editor.update(cx, |view, cx| {
4987 view.end_selection(cx);
4988 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
4989 });
4990
4991 assert_eq!(
4992 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4993 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
4994 );
4995
4996 editor.update(cx, |view, cx| {
4997 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
4998 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
4999 });
5000
5001 assert_eq!(
5002 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5003 [
5004 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
5005 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
5006 ]
5007 );
5008
5009 editor.update(cx, |view, cx| {
5010 view.end_selection(cx);
5011 });
5012
5013 assert_eq!(
5014 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5015 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
5016 );
5017 }
5018
5019 #[gpui::test]
5020 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
5021 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
5022 let settings = EditorSettings::test(cx);
5023 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5024
5025 view.update(cx, |view, cx| {
5026 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
5027 assert_eq!(
5028 view.selected_display_ranges(cx),
5029 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
5030 );
5031 });
5032
5033 view.update(cx, |view, cx| {
5034 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
5035 assert_eq!(
5036 view.selected_display_ranges(cx),
5037 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
5038 );
5039 });
5040
5041 view.update(cx, |view, cx| {
5042 view.cancel(&Cancel, cx);
5043 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
5044 assert_eq!(
5045 view.selected_display_ranges(cx),
5046 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
5047 );
5048 });
5049 }
5050
5051 #[gpui::test]
5052 fn test_navigation_history(cx: &mut gpui::MutableAppContext) {
5053 cx.add_window(Default::default(), |cx| {
5054 use workspace::ItemView;
5055 let nav_history = Rc::new(RefCell::new(workspace::NavHistory::default()));
5056 let settings = EditorSettings::test(&cx);
5057 let buffer = MultiBuffer::build_simple(&sample_text(30, 5, 'a'), cx);
5058 let mut editor = build_editor(buffer.clone(), settings, cx);
5059 editor.nav_history = Some(ItemNavHistory::new(nav_history.clone(), &cx.handle()));
5060
5061 // Move the cursor a small distance.
5062 // Nothing is added to the navigation history.
5063 editor.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
5064 editor.select_display_ranges(&[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)], cx);
5065 assert!(nav_history.borrow_mut().pop_backward().is_none());
5066
5067 // Move the cursor a large distance.
5068 // The history can jump back to the previous position.
5069 editor.select_display_ranges(&[DisplayPoint::new(13, 0)..DisplayPoint::new(13, 3)], cx);
5070 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
5071 editor.navigate(nav_entry.data.unwrap(), cx);
5072 assert_eq!(nav_entry.item_view.id(), cx.view_id());
5073 assert_eq!(
5074 editor.selected_display_ranges(cx),
5075 &[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)]
5076 );
5077
5078 // Move the cursor a small distance via the mouse.
5079 // Nothing is added to the navigation history.
5080 editor.begin_selection(DisplayPoint::new(5, 0), false, 1, cx);
5081 editor.end_selection(cx);
5082 assert_eq!(
5083 editor.selected_display_ranges(cx),
5084 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
5085 );
5086 assert!(nav_history.borrow_mut().pop_backward().is_none());
5087
5088 // Move the cursor a large distance via the mouse.
5089 // The history can jump back to the previous position.
5090 editor.begin_selection(DisplayPoint::new(15, 0), false, 1, cx);
5091 editor.end_selection(cx);
5092 assert_eq!(
5093 editor.selected_display_ranges(cx),
5094 &[DisplayPoint::new(15, 0)..DisplayPoint::new(15, 0)]
5095 );
5096 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
5097 editor.navigate(nav_entry.data.unwrap(), cx);
5098 assert_eq!(nav_entry.item_view.id(), cx.view_id());
5099 assert_eq!(
5100 editor.selected_display_ranges(cx),
5101 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
5102 );
5103
5104 editor
5105 });
5106 }
5107
5108 #[gpui::test]
5109 fn test_cancel(cx: &mut gpui::MutableAppContext) {
5110 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
5111 let settings = EditorSettings::test(cx);
5112 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5113
5114 view.update(cx, |view, cx| {
5115 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
5116 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
5117 view.end_selection(cx);
5118
5119 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
5120 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
5121 view.end_selection(cx);
5122 assert_eq!(
5123 view.selected_display_ranges(cx),
5124 [
5125 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5126 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
5127 ]
5128 );
5129 });
5130
5131 view.update(cx, |view, cx| {
5132 view.cancel(&Cancel, cx);
5133 assert_eq!(
5134 view.selected_display_ranges(cx),
5135 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
5136 );
5137 });
5138
5139 view.update(cx, |view, cx| {
5140 view.cancel(&Cancel, cx);
5141 assert_eq!(
5142 view.selected_display_ranges(cx),
5143 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
5144 );
5145 });
5146 }
5147
5148 #[gpui::test]
5149 fn test_fold(cx: &mut gpui::MutableAppContext) {
5150 let buffer = MultiBuffer::build_simple(
5151 &"
5152 impl Foo {
5153 // Hello!
5154
5155 fn a() {
5156 1
5157 }
5158
5159 fn b() {
5160 2
5161 }
5162
5163 fn c() {
5164 3
5165 }
5166 }
5167 "
5168 .unindent(),
5169 cx,
5170 );
5171 let settings = EditorSettings::test(&cx);
5172 let (_, view) = cx.add_window(Default::default(), |cx| {
5173 build_editor(buffer.clone(), settings, cx)
5174 });
5175
5176 view.update(cx, |view, cx| {
5177 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx);
5178 view.fold(&Fold, cx);
5179 assert_eq!(
5180 view.display_text(cx),
5181 "
5182 impl Foo {
5183 // Hello!
5184
5185 fn a() {
5186 1
5187 }
5188
5189 fn b() {…
5190 }
5191
5192 fn c() {…
5193 }
5194 }
5195 "
5196 .unindent(),
5197 );
5198
5199 view.fold(&Fold, cx);
5200 assert_eq!(
5201 view.display_text(cx),
5202 "
5203 impl Foo {…
5204 }
5205 "
5206 .unindent(),
5207 );
5208
5209 view.unfold(&Unfold, cx);
5210 assert_eq!(
5211 view.display_text(cx),
5212 "
5213 impl Foo {
5214 // Hello!
5215
5216 fn a() {
5217 1
5218 }
5219
5220 fn b() {…
5221 }
5222
5223 fn c() {…
5224 }
5225 }
5226 "
5227 .unindent(),
5228 );
5229
5230 view.unfold(&Unfold, cx);
5231 assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text());
5232 });
5233 }
5234
5235 #[gpui::test]
5236 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
5237 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
5238 let settings = EditorSettings::test(&cx);
5239 let (_, view) = cx.add_window(Default::default(), |cx| {
5240 build_editor(buffer.clone(), settings, cx)
5241 });
5242
5243 buffer.update(cx, |buffer, cx| {
5244 buffer.edit(
5245 vec![
5246 Point::new(1, 0)..Point::new(1, 0),
5247 Point::new(1, 1)..Point::new(1, 1),
5248 ],
5249 "\t",
5250 cx,
5251 );
5252 });
5253
5254 view.update(cx, |view, cx| {
5255 assert_eq!(
5256 view.selected_display_ranges(cx),
5257 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
5258 );
5259
5260 view.move_down(&MoveDown, cx);
5261 assert_eq!(
5262 view.selected_display_ranges(cx),
5263 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
5264 );
5265
5266 view.move_right(&MoveRight, cx);
5267 assert_eq!(
5268 view.selected_display_ranges(cx),
5269 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
5270 );
5271
5272 view.move_left(&MoveLeft, cx);
5273 assert_eq!(
5274 view.selected_display_ranges(cx),
5275 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
5276 );
5277
5278 view.move_up(&MoveUp, cx);
5279 assert_eq!(
5280 view.selected_display_ranges(cx),
5281 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
5282 );
5283
5284 view.move_to_end(&MoveToEnd, cx);
5285 assert_eq!(
5286 view.selected_display_ranges(cx),
5287 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
5288 );
5289
5290 view.move_to_beginning(&MoveToBeginning, cx);
5291 assert_eq!(
5292 view.selected_display_ranges(cx),
5293 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
5294 );
5295
5296 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx);
5297 view.select_to_beginning(&SelectToBeginning, cx);
5298 assert_eq!(
5299 view.selected_display_ranges(cx),
5300 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
5301 );
5302
5303 view.select_to_end(&SelectToEnd, cx);
5304 assert_eq!(
5305 view.selected_display_ranges(cx),
5306 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
5307 );
5308 });
5309 }
5310
5311 #[gpui::test]
5312 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
5313 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
5314 let settings = EditorSettings::test(&cx);
5315 let (_, view) = cx.add_window(Default::default(), |cx| {
5316 build_editor(buffer.clone(), settings, cx)
5317 });
5318
5319 assert_eq!('ⓐ'.len_utf8(), 3);
5320 assert_eq!('α'.len_utf8(), 2);
5321
5322 view.update(cx, |view, cx| {
5323 view.fold_ranges(
5324 vec![
5325 Point::new(0, 6)..Point::new(0, 12),
5326 Point::new(1, 2)..Point::new(1, 4),
5327 Point::new(2, 4)..Point::new(2, 8),
5328 ],
5329 cx,
5330 );
5331 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
5332
5333 view.move_right(&MoveRight, cx);
5334 assert_eq!(
5335 view.selected_display_ranges(cx),
5336 &[empty_range(0, "ⓐ".len())]
5337 );
5338 view.move_right(&MoveRight, cx);
5339 assert_eq!(
5340 view.selected_display_ranges(cx),
5341 &[empty_range(0, "ⓐⓑ".len())]
5342 );
5343 view.move_right(&MoveRight, cx);
5344 assert_eq!(
5345 view.selected_display_ranges(cx),
5346 &[empty_range(0, "ⓐⓑ…".len())]
5347 );
5348
5349 view.move_down(&MoveDown, cx);
5350 assert_eq!(
5351 view.selected_display_ranges(cx),
5352 &[empty_range(1, "ab…".len())]
5353 );
5354 view.move_left(&MoveLeft, cx);
5355 assert_eq!(
5356 view.selected_display_ranges(cx),
5357 &[empty_range(1, "ab".len())]
5358 );
5359 view.move_left(&MoveLeft, cx);
5360 assert_eq!(
5361 view.selected_display_ranges(cx),
5362 &[empty_range(1, "a".len())]
5363 );
5364
5365 view.move_down(&MoveDown, cx);
5366 assert_eq!(
5367 view.selected_display_ranges(cx),
5368 &[empty_range(2, "α".len())]
5369 );
5370 view.move_right(&MoveRight, cx);
5371 assert_eq!(
5372 view.selected_display_ranges(cx),
5373 &[empty_range(2, "αβ".len())]
5374 );
5375 view.move_right(&MoveRight, cx);
5376 assert_eq!(
5377 view.selected_display_ranges(cx),
5378 &[empty_range(2, "αβ…".len())]
5379 );
5380 view.move_right(&MoveRight, cx);
5381 assert_eq!(
5382 view.selected_display_ranges(cx),
5383 &[empty_range(2, "αβ…ε".len())]
5384 );
5385
5386 view.move_up(&MoveUp, cx);
5387 assert_eq!(
5388 view.selected_display_ranges(cx),
5389 &[empty_range(1, "ab…e".len())]
5390 );
5391 view.move_up(&MoveUp, cx);
5392 assert_eq!(
5393 view.selected_display_ranges(cx),
5394 &[empty_range(0, "ⓐⓑ…ⓔ".len())]
5395 );
5396 view.move_left(&MoveLeft, cx);
5397 assert_eq!(
5398 view.selected_display_ranges(cx),
5399 &[empty_range(0, "ⓐⓑ…".len())]
5400 );
5401 view.move_left(&MoveLeft, cx);
5402 assert_eq!(
5403 view.selected_display_ranges(cx),
5404 &[empty_range(0, "ⓐⓑ".len())]
5405 );
5406 view.move_left(&MoveLeft, cx);
5407 assert_eq!(
5408 view.selected_display_ranges(cx),
5409 &[empty_range(0, "ⓐ".len())]
5410 );
5411 });
5412 }
5413
5414 #[gpui::test]
5415 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
5416 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
5417 let settings = EditorSettings::test(&cx);
5418 let (_, view) = cx.add_window(Default::default(), |cx| {
5419 build_editor(buffer.clone(), settings, cx)
5420 });
5421 view.update(cx, |view, cx| {
5422 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx);
5423 view.move_down(&MoveDown, cx);
5424 assert_eq!(
5425 view.selected_display_ranges(cx),
5426 &[empty_range(1, "abcd".len())]
5427 );
5428
5429 view.move_down(&MoveDown, cx);
5430 assert_eq!(
5431 view.selected_display_ranges(cx),
5432 &[empty_range(2, "αβγ".len())]
5433 );
5434
5435 view.move_down(&MoveDown, cx);
5436 assert_eq!(
5437 view.selected_display_ranges(cx),
5438 &[empty_range(3, "abcd".len())]
5439 );
5440
5441 view.move_down(&MoveDown, cx);
5442 assert_eq!(
5443 view.selected_display_ranges(cx),
5444 &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
5445 );
5446
5447 view.move_up(&MoveUp, cx);
5448 assert_eq!(
5449 view.selected_display_ranges(cx),
5450 &[empty_range(3, "abcd".len())]
5451 );
5452
5453 view.move_up(&MoveUp, cx);
5454 assert_eq!(
5455 view.selected_display_ranges(cx),
5456 &[empty_range(2, "αβγ".len())]
5457 );
5458 });
5459 }
5460
5461 #[gpui::test]
5462 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
5463 let buffer = MultiBuffer::build_simple("abc\n def", cx);
5464 let settings = EditorSettings::test(&cx);
5465 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5466 view.update(cx, |view, cx| {
5467 view.select_display_ranges(
5468 &[
5469 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5470 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
5471 ],
5472 cx,
5473 );
5474 });
5475
5476 view.update(cx, |view, cx| {
5477 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
5478 assert_eq!(
5479 view.selected_display_ranges(cx),
5480 &[
5481 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5482 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5483 ]
5484 );
5485 });
5486
5487 view.update(cx, |view, cx| {
5488 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
5489 assert_eq!(
5490 view.selected_display_ranges(cx),
5491 &[
5492 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5493 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5494 ]
5495 );
5496 });
5497
5498 view.update(cx, |view, cx| {
5499 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
5500 assert_eq!(
5501 view.selected_display_ranges(cx),
5502 &[
5503 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5504 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5505 ]
5506 );
5507 });
5508
5509 view.update(cx, |view, cx| {
5510 view.move_to_end_of_line(&MoveToEndOfLine, cx);
5511 assert_eq!(
5512 view.selected_display_ranges(cx),
5513 &[
5514 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5515 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
5516 ]
5517 );
5518 });
5519
5520 // Moving to the end of line again is a no-op.
5521 view.update(cx, |view, cx| {
5522 view.move_to_end_of_line(&MoveToEndOfLine, cx);
5523 assert_eq!(
5524 view.selected_display_ranges(cx),
5525 &[
5526 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5527 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
5528 ]
5529 );
5530 });
5531
5532 view.update(cx, |view, cx| {
5533 view.move_left(&MoveLeft, cx);
5534 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
5535 assert_eq!(
5536 view.selected_display_ranges(cx),
5537 &[
5538 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
5539 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
5540 ]
5541 );
5542 });
5543
5544 view.update(cx, |view, cx| {
5545 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
5546 assert_eq!(
5547 view.selected_display_ranges(cx),
5548 &[
5549 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
5550 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
5551 ]
5552 );
5553 });
5554
5555 view.update(cx, |view, cx| {
5556 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
5557 assert_eq!(
5558 view.selected_display_ranges(cx),
5559 &[
5560 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
5561 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
5562 ]
5563 );
5564 });
5565
5566 view.update(cx, |view, cx| {
5567 view.select_to_end_of_line(&SelectToEndOfLine, cx);
5568 assert_eq!(
5569 view.selected_display_ranges(cx),
5570 &[
5571 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
5572 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
5573 ]
5574 );
5575 });
5576
5577 view.update(cx, |view, cx| {
5578 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
5579 assert_eq!(view.display_text(cx), "ab\n de");
5580 assert_eq!(
5581 view.selected_display_ranges(cx),
5582 &[
5583 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5584 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
5585 ]
5586 );
5587 });
5588
5589 view.update(cx, |view, cx| {
5590 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
5591 assert_eq!(view.display_text(cx), "\n");
5592 assert_eq!(
5593 view.selected_display_ranges(cx),
5594 &[
5595 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5596 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5597 ]
5598 );
5599 });
5600 }
5601
5602 #[gpui::test]
5603 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
5604 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
5605 let settings = EditorSettings::test(&cx);
5606 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5607 view.update(cx, |view, cx| {
5608 view.select_display_ranges(
5609 &[
5610 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
5611 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
5612 ],
5613 cx,
5614 );
5615 });
5616
5617 view.update(cx, |view, cx| {
5618 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5619 assert_eq!(
5620 view.selected_display_ranges(cx),
5621 &[
5622 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
5623 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
5624 ]
5625 );
5626 });
5627
5628 view.update(cx, |view, cx| {
5629 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5630 assert_eq!(
5631 view.selected_display_ranges(cx),
5632 &[
5633 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
5634 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2),
5635 ]
5636 );
5637 });
5638
5639 view.update(cx, |view, cx| {
5640 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5641 assert_eq!(
5642 view.selected_display_ranges(cx),
5643 &[
5644 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
5645 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
5646 ]
5647 );
5648 });
5649
5650 view.update(cx, |view, cx| {
5651 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5652 assert_eq!(
5653 view.selected_display_ranges(cx),
5654 &[
5655 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5656 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5657 ]
5658 );
5659 });
5660
5661 view.update(cx, |view, cx| {
5662 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5663 assert_eq!(
5664 view.selected_display_ranges(cx),
5665 &[
5666 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5667 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 23),
5668 ]
5669 );
5670 });
5671
5672 view.update(cx, |view, cx| {
5673 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5674 assert_eq!(
5675 view.selected_display_ranges(cx),
5676 &[
5677 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5678 DisplayPoint::new(0, 24)..DisplayPoint::new(0, 24),
5679 ]
5680 );
5681 });
5682
5683 view.update(cx, |view, cx| {
5684 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5685 assert_eq!(
5686 view.selected_display_ranges(cx),
5687 &[
5688 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
5689 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5690 ]
5691 );
5692 });
5693
5694 view.update(cx, |view, cx| {
5695 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5696 assert_eq!(
5697 view.selected_display_ranges(cx),
5698 &[
5699 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
5700 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
5701 ]
5702 );
5703 });
5704
5705 view.update(cx, |view, cx| {
5706 view.move_right(&MoveRight, cx);
5707 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
5708 assert_eq!(
5709 view.selected_display_ranges(cx),
5710 &[
5711 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
5712 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
5713 ]
5714 );
5715 });
5716
5717 view.update(cx, |view, cx| {
5718 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
5719 assert_eq!(
5720 view.selected_display_ranges(cx),
5721 &[
5722 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 7),
5723 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 2),
5724 ]
5725 );
5726 });
5727
5728 view.update(cx, |view, cx| {
5729 view.select_to_next_word_boundary(&SelectToNextWordBoundary, cx);
5730 assert_eq!(
5731 view.selected_display_ranges(cx),
5732 &[
5733 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
5734 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
5735 ]
5736 );
5737 });
5738 }
5739
5740 #[gpui::test]
5741 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
5742 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
5743 let settings = EditorSettings::test(&cx);
5744 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5745
5746 view.update(cx, |view, cx| {
5747 view.set_wrap_width(Some(140.), cx);
5748 assert_eq!(
5749 view.display_text(cx),
5750 "use one::{\n two::three::\n four::five\n};"
5751 );
5752
5753 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx);
5754
5755 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5756 assert_eq!(
5757 view.selected_display_ranges(cx),
5758 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
5759 );
5760
5761 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5762 assert_eq!(
5763 view.selected_display_ranges(cx),
5764 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
5765 );
5766
5767 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5768 assert_eq!(
5769 view.selected_display_ranges(cx),
5770 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
5771 );
5772
5773 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5774 assert_eq!(
5775 view.selected_display_ranges(cx),
5776 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
5777 );
5778
5779 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5780 assert_eq!(
5781 view.selected_display_ranges(cx),
5782 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
5783 );
5784
5785 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5786 assert_eq!(
5787 view.selected_display_ranges(cx),
5788 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
5789 );
5790 });
5791 }
5792
5793 #[gpui::test]
5794 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
5795 let buffer = MultiBuffer::build_simple("one two three four", cx);
5796 let settings = EditorSettings::test(&cx);
5797 let (_, view) = cx.add_window(Default::default(), |cx| {
5798 build_editor(buffer.clone(), settings, cx)
5799 });
5800
5801 view.update(cx, |view, cx| {
5802 view.select_display_ranges(
5803 &[
5804 // an empty selection - the preceding word fragment is deleted
5805 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5806 // characters selected - they are deleted
5807 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
5808 ],
5809 cx,
5810 );
5811 view.delete_to_previous_word_boundary(&DeleteToPreviousWordBoundary, cx);
5812 });
5813
5814 assert_eq!(buffer.read(cx).read(cx).text(), "e two te four");
5815
5816 view.update(cx, |view, cx| {
5817 view.select_display_ranges(
5818 &[
5819 // an empty selection - the following word fragment is deleted
5820 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5821 // characters selected - they are deleted
5822 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
5823 ],
5824 cx,
5825 );
5826 view.delete_to_next_word_boundary(&DeleteToNextWordBoundary, cx);
5827 });
5828
5829 assert_eq!(buffer.read(cx).read(cx).text(), "e t te our");
5830 }
5831
5832 #[gpui::test]
5833 fn test_newline(cx: &mut gpui::MutableAppContext) {
5834 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
5835 let settings = EditorSettings::test(&cx);
5836 let (_, view) = cx.add_window(Default::default(), |cx| {
5837 build_editor(buffer.clone(), settings, cx)
5838 });
5839
5840 view.update(cx, |view, cx| {
5841 view.select_display_ranges(
5842 &[
5843 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5844 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5845 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
5846 ],
5847 cx,
5848 );
5849
5850 view.newline(&Newline, cx);
5851 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
5852 });
5853 }
5854
5855 #[gpui::test]
5856 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
5857 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
5858 let settings = EditorSettings::test(&cx);
5859 let (_, view) = cx.add_window(Default::default(), |cx| {
5860 build_editor(buffer.clone(), settings, cx)
5861 });
5862
5863 view.update(cx, |view, cx| {
5864 // two selections on the same line
5865 view.select_display_ranges(
5866 &[
5867 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
5868 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
5869 ],
5870 cx,
5871 );
5872
5873 // indent from mid-tabstop to full tabstop
5874 view.tab(&Tab, cx);
5875 assert_eq!(view.text(cx), " one two\nthree\n four");
5876 assert_eq!(
5877 view.selected_display_ranges(cx),
5878 &[
5879 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
5880 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
5881 ]
5882 );
5883
5884 // outdent from 1 tabstop to 0 tabstops
5885 view.outdent(&Outdent, cx);
5886 assert_eq!(view.text(cx), "one two\nthree\n four");
5887 assert_eq!(
5888 view.selected_display_ranges(cx),
5889 &[
5890 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
5891 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
5892 ]
5893 );
5894
5895 // select across line ending
5896 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx);
5897
5898 // indent and outdent affect only the preceding line
5899 view.tab(&Tab, cx);
5900 assert_eq!(view.text(cx), "one two\n three\n four");
5901 assert_eq!(
5902 view.selected_display_ranges(cx),
5903 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
5904 );
5905 view.outdent(&Outdent, cx);
5906 assert_eq!(view.text(cx), "one two\nthree\n four");
5907 assert_eq!(
5908 view.selected_display_ranges(cx),
5909 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
5910 );
5911
5912 // Ensure that indenting/outdenting works when the cursor is at column 0.
5913 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
5914 view.tab(&Tab, cx);
5915 assert_eq!(view.text(cx), "one two\n three\n four");
5916 assert_eq!(
5917 view.selected_display_ranges(cx),
5918 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
5919 );
5920
5921 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
5922 view.outdent(&Outdent, cx);
5923 assert_eq!(view.text(cx), "one two\nthree\n four");
5924 assert_eq!(
5925 view.selected_display_ranges(cx),
5926 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
5927 );
5928 });
5929 }
5930
5931 #[gpui::test]
5932 fn test_backspace(cx: &mut gpui::MutableAppContext) {
5933 let buffer =
5934 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
5935 let settings = EditorSettings::test(&cx);
5936 let (_, view) = cx.add_window(Default::default(), |cx| {
5937 build_editor(buffer.clone(), settings, cx)
5938 });
5939
5940 view.update(cx, |view, cx| {
5941 view.select_display_ranges(
5942 &[
5943 // an empty selection - the preceding character is deleted
5944 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5945 // one character selected - it is deleted
5946 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
5947 // a line suffix selected - it is deleted
5948 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
5949 ],
5950 cx,
5951 );
5952 view.backspace(&Backspace, cx);
5953 });
5954
5955 assert_eq!(
5956 buffer.read(cx).read(cx).text(),
5957 "oe two three\nfou five six\nseven ten\n"
5958 );
5959 }
5960
5961 #[gpui::test]
5962 fn test_delete(cx: &mut gpui::MutableAppContext) {
5963 let buffer =
5964 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
5965 let settings = EditorSettings::test(&cx);
5966 let (_, view) = cx.add_window(Default::default(), |cx| {
5967 build_editor(buffer.clone(), settings, cx)
5968 });
5969
5970 view.update(cx, |view, cx| {
5971 view.select_display_ranges(
5972 &[
5973 // an empty selection - the following character is deleted
5974 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5975 // one character selected - it is deleted
5976 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
5977 // a line suffix selected - it is deleted
5978 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
5979 ],
5980 cx,
5981 );
5982 view.delete(&Delete, cx);
5983 });
5984
5985 assert_eq!(
5986 buffer.read(cx).read(cx).text(),
5987 "on two three\nfou five six\nseven ten\n"
5988 );
5989 }
5990
5991 #[gpui::test]
5992 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
5993 let settings = EditorSettings::test(&cx);
5994 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
5995 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5996 view.update(cx, |view, cx| {
5997 view.select_display_ranges(
5998 &[
5999 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6000 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
6001 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6002 ],
6003 cx,
6004 );
6005 view.delete_line(&DeleteLine, cx);
6006 assert_eq!(view.display_text(cx), "ghi");
6007 assert_eq!(
6008 view.selected_display_ranges(cx),
6009 vec![
6010 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6011 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
6012 ]
6013 );
6014 });
6015
6016 let settings = EditorSettings::test(&cx);
6017 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
6018 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6019 view.update(cx, |view, cx| {
6020 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx);
6021 view.delete_line(&DeleteLine, cx);
6022 assert_eq!(view.display_text(cx), "ghi\n");
6023 assert_eq!(
6024 view.selected_display_ranges(cx),
6025 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
6026 );
6027 });
6028 }
6029
6030 #[gpui::test]
6031 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
6032 let settings = EditorSettings::test(&cx);
6033 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
6034 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6035 view.update(cx, |view, cx| {
6036 view.select_display_ranges(
6037 &[
6038 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
6039 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6040 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6041 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6042 ],
6043 cx,
6044 );
6045 view.duplicate_line(&DuplicateLine, cx);
6046 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
6047 assert_eq!(
6048 view.selected_display_ranges(cx),
6049 vec![
6050 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
6051 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6052 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6053 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
6054 ]
6055 );
6056 });
6057
6058 let settings = EditorSettings::test(&cx);
6059 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
6060 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6061 view.update(cx, |view, cx| {
6062 view.select_display_ranges(
6063 &[
6064 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
6065 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
6066 ],
6067 cx,
6068 );
6069 view.duplicate_line(&DuplicateLine, cx);
6070 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
6071 assert_eq!(
6072 view.selected_display_ranges(cx),
6073 vec![
6074 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
6075 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
6076 ]
6077 );
6078 });
6079 }
6080
6081 #[gpui::test]
6082 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
6083 let settings = EditorSettings::test(&cx);
6084 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
6085 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6086 view.update(cx, |view, cx| {
6087 view.fold_ranges(
6088 vec![
6089 Point::new(0, 2)..Point::new(1, 2),
6090 Point::new(2, 3)..Point::new(4, 1),
6091 Point::new(7, 0)..Point::new(8, 4),
6092 ],
6093 cx,
6094 );
6095 view.select_display_ranges(
6096 &[
6097 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6098 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
6099 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
6100 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
6101 ],
6102 cx,
6103 );
6104 assert_eq!(
6105 view.display_text(cx),
6106 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
6107 );
6108
6109 view.move_line_up(&MoveLineUp, cx);
6110 assert_eq!(
6111 view.display_text(cx),
6112 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
6113 );
6114 assert_eq!(
6115 view.selected_display_ranges(cx),
6116 vec![
6117 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6118 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6119 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
6120 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
6121 ]
6122 );
6123 });
6124
6125 view.update(cx, |view, cx| {
6126 view.move_line_down(&MoveLineDown, cx);
6127 assert_eq!(
6128 view.display_text(cx),
6129 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
6130 );
6131 assert_eq!(
6132 view.selected_display_ranges(cx),
6133 vec![
6134 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6135 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
6136 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
6137 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
6138 ]
6139 );
6140 });
6141
6142 view.update(cx, |view, cx| {
6143 view.move_line_down(&MoveLineDown, cx);
6144 assert_eq!(
6145 view.display_text(cx),
6146 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
6147 );
6148 assert_eq!(
6149 view.selected_display_ranges(cx),
6150 vec![
6151 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6152 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
6153 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
6154 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
6155 ]
6156 );
6157 });
6158
6159 view.update(cx, |view, cx| {
6160 view.move_line_up(&MoveLineUp, cx);
6161 assert_eq!(
6162 view.display_text(cx),
6163 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
6164 );
6165 assert_eq!(
6166 view.selected_display_ranges(cx),
6167 vec![
6168 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6169 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6170 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
6171 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
6172 ]
6173 );
6174 });
6175 }
6176
6177 #[gpui::test]
6178 fn test_move_line_up_down_with_blocks(cx: &mut gpui::MutableAppContext) {
6179 let settings = EditorSettings::test(&cx);
6180 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
6181 let snapshot = buffer.read(cx).snapshot(cx);
6182 let (_, editor) =
6183 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6184 editor.update(cx, |editor, cx| {
6185 editor.insert_blocks(
6186 [BlockProperties {
6187 position: snapshot.anchor_after(Point::new(2, 0)),
6188 disposition: BlockDisposition::Below,
6189 height: 1,
6190 render: Arc::new(|_| Empty::new().boxed()),
6191 }],
6192 cx,
6193 );
6194 editor.select_ranges([Point::new(2, 0)..Point::new(2, 0)], None, cx);
6195 editor.move_line_down(&MoveLineDown, cx);
6196 });
6197 }
6198
6199 #[gpui::test]
6200 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
6201 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
6202 let settings = EditorSettings::test(&cx);
6203 let view = cx
6204 .add_window(Default::default(), |cx| {
6205 build_editor(buffer.clone(), settings, cx)
6206 })
6207 .1;
6208
6209 // Cut with three selections. Clipboard text is divided into three slices.
6210 view.update(cx, |view, cx| {
6211 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
6212 view.cut(&Cut, cx);
6213 assert_eq!(view.display_text(cx), "two four six ");
6214 });
6215
6216 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
6217 view.update(cx, |view, cx| {
6218 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
6219 view.paste(&Paste, cx);
6220 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
6221 assert_eq!(
6222 view.selected_display_ranges(cx),
6223 &[
6224 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
6225 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
6226 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
6227 ]
6228 );
6229 });
6230
6231 // Paste again but with only two cursors. Since the number of cursors doesn't
6232 // match the number of slices in the clipboard, the entire clipboard text
6233 // is pasted at each cursor.
6234 view.update(cx, |view, cx| {
6235 view.select_ranges(vec![0..0, 31..31], None, cx);
6236 view.handle_input(&Input("( ".into()), cx);
6237 view.paste(&Paste, cx);
6238 view.handle_input(&Input(") ".into()), cx);
6239 assert_eq!(
6240 view.display_text(cx),
6241 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
6242 );
6243 });
6244
6245 view.update(cx, |view, cx| {
6246 view.select_ranges(vec![0..0], None, cx);
6247 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
6248 assert_eq!(
6249 view.display_text(cx),
6250 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
6251 );
6252 });
6253
6254 // Cut with three selections, one of which is full-line.
6255 view.update(cx, |view, cx| {
6256 view.select_display_ranges(
6257 &[
6258 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
6259 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6260 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
6261 ],
6262 cx,
6263 );
6264 view.cut(&Cut, cx);
6265 assert_eq!(
6266 view.display_text(cx),
6267 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
6268 );
6269 });
6270
6271 // Paste with three selections, noticing how the copied selection that was full-line
6272 // gets inserted before the second cursor.
6273 view.update(cx, |view, cx| {
6274 view.select_display_ranges(
6275 &[
6276 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6277 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6278 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
6279 ],
6280 cx,
6281 );
6282 view.paste(&Paste, cx);
6283 assert_eq!(
6284 view.display_text(cx),
6285 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
6286 );
6287 assert_eq!(
6288 view.selected_display_ranges(cx),
6289 &[
6290 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6291 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6292 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
6293 ]
6294 );
6295 });
6296
6297 // Copy with a single cursor only, which writes the whole line into the clipboard.
6298 view.update(cx, |view, cx| {
6299 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx);
6300 view.copy(&Copy, cx);
6301 });
6302
6303 // Paste with three selections, noticing how the copied full-line selection is inserted
6304 // before the empty selections but replaces the selection that is non-empty.
6305 view.update(cx, |view, cx| {
6306 view.select_display_ranges(
6307 &[
6308 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6309 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
6310 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6311 ],
6312 cx,
6313 );
6314 view.paste(&Paste, cx);
6315 assert_eq!(
6316 view.display_text(cx),
6317 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
6318 );
6319 assert_eq!(
6320 view.selected_display_ranges(cx),
6321 &[
6322 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6323 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6324 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
6325 ]
6326 );
6327 });
6328 }
6329
6330 #[gpui::test]
6331 fn test_select_all(cx: &mut gpui::MutableAppContext) {
6332 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
6333 let settings = EditorSettings::test(&cx);
6334 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6335 view.update(cx, |view, cx| {
6336 view.select_all(&SelectAll, cx);
6337 assert_eq!(
6338 view.selected_display_ranges(cx),
6339 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
6340 );
6341 });
6342 }
6343
6344 #[gpui::test]
6345 fn test_select_line(cx: &mut gpui::MutableAppContext) {
6346 let settings = EditorSettings::test(&cx);
6347 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
6348 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6349 view.update(cx, |view, cx| {
6350 view.select_display_ranges(
6351 &[
6352 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
6353 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6354 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6355 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
6356 ],
6357 cx,
6358 );
6359 view.select_line(&SelectLine, cx);
6360 assert_eq!(
6361 view.selected_display_ranges(cx),
6362 vec![
6363 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
6364 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
6365 ]
6366 );
6367 });
6368
6369 view.update(cx, |view, cx| {
6370 view.select_line(&SelectLine, cx);
6371 assert_eq!(
6372 view.selected_display_ranges(cx),
6373 vec![
6374 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
6375 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
6376 ]
6377 );
6378 });
6379
6380 view.update(cx, |view, cx| {
6381 view.select_line(&SelectLine, cx);
6382 assert_eq!(
6383 view.selected_display_ranges(cx),
6384 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
6385 );
6386 });
6387 }
6388
6389 #[gpui::test]
6390 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
6391 let settings = EditorSettings::test(&cx);
6392 let buffer = MultiBuffer::build_simple(&sample_text(9, 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.fold_ranges(
6396 vec![
6397 Point::new(0, 2)..Point::new(1, 2),
6398 Point::new(2, 3)..Point::new(4, 1),
6399 Point::new(7, 0)..Point::new(8, 4),
6400 ],
6401 cx,
6402 );
6403 view.select_display_ranges(
6404 &[
6405 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
6406 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6407 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6408 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
6409 ],
6410 cx,
6411 );
6412 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
6413 });
6414
6415 view.update(cx, |view, cx| {
6416 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
6417 assert_eq!(
6418 view.display_text(cx),
6419 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
6420 );
6421 assert_eq!(
6422 view.selected_display_ranges(cx),
6423 [
6424 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6425 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6426 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
6427 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
6428 ]
6429 );
6430 });
6431
6432 view.update(cx, |view, cx| {
6433 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx);
6434 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
6435 assert_eq!(
6436 view.display_text(cx),
6437 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
6438 );
6439 assert_eq!(
6440 view.selected_display_ranges(cx),
6441 [
6442 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
6443 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6444 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
6445 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
6446 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
6447 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
6448 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
6449 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
6450 ]
6451 );
6452 });
6453 }
6454
6455 #[gpui::test]
6456 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
6457 let settings = EditorSettings::test(&cx);
6458 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
6459 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6460
6461 view.update(cx, |view, cx| {
6462 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx);
6463 });
6464 view.update(cx, |view, cx| {
6465 view.add_selection_above(&AddSelectionAbove, cx);
6466 assert_eq!(
6467 view.selected_display_ranges(cx),
6468 vec![
6469 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6470 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
6471 ]
6472 );
6473 });
6474
6475 view.update(cx, |view, cx| {
6476 view.add_selection_above(&AddSelectionAbove, cx);
6477 assert_eq!(
6478 view.selected_display_ranges(cx),
6479 vec![
6480 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6481 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
6482 ]
6483 );
6484 });
6485
6486 view.update(cx, |view, cx| {
6487 view.add_selection_below(&AddSelectionBelow, cx);
6488 assert_eq!(
6489 view.selected_display_ranges(cx),
6490 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
6491 );
6492 });
6493
6494 view.update(cx, |view, cx| {
6495 view.add_selection_below(&AddSelectionBelow, cx);
6496 assert_eq!(
6497 view.selected_display_ranges(cx),
6498 vec![
6499 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
6500 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
6501 ]
6502 );
6503 });
6504
6505 view.update(cx, |view, cx| {
6506 view.add_selection_below(&AddSelectionBelow, cx);
6507 assert_eq!(
6508 view.selected_display_ranges(cx),
6509 vec![
6510 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
6511 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
6512 ]
6513 );
6514 });
6515
6516 view.update(cx, |view, cx| {
6517 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx);
6518 });
6519 view.update(cx, |view, cx| {
6520 view.add_selection_below(&AddSelectionBelow, cx);
6521 assert_eq!(
6522 view.selected_display_ranges(cx),
6523 vec![
6524 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
6525 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
6526 ]
6527 );
6528 });
6529
6530 view.update(cx, |view, cx| {
6531 view.add_selection_below(&AddSelectionBelow, cx);
6532 assert_eq!(
6533 view.selected_display_ranges(cx),
6534 vec![
6535 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
6536 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
6537 ]
6538 );
6539 });
6540
6541 view.update(cx, |view, cx| {
6542 view.add_selection_above(&AddSelectionAbove, cx);
6543 assert_eq!(
6544 view.selected_display_ranges(cx),
6545 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
6546 );
6547 });
6548
6549 view.update(cx, |view, cx| {
6550 view.add_selection_above(&AddSelectionAbove, cx);
6551 assert_eq!(
6552 view.selected_display_ranges(cx),
6553 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
6554 );
6555 });
6556
6557 view.update(cx, |view, cx| {
6558 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx);
6559 view.add_selection_below(&AddSelectionBelow, cx);
6560 assert_eq!(
6561 view.selected_display_ranges(cx),
6562 vec![
6563 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
6564 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
6565 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
6566 ]
6567 );
6568 });
6569
6570 view.update(cx, |view, cx| {
6571 view.add_selection_below(&AddSelectionBelow, cx);
6572 assert_eq!(
6573 view.selected_display_ranges(cx),
6574 vec![
6575 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
6576 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
6577 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
6578 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
6579 ]
6580 );
6581 });
6582
6583 view.update(cx, |view, cx| {
6584 view.add_selection_above(&AddSelectionAbove, cx);
6585 assert_eq!(
6586 view.selected_display_ranges(cx),
6587 vec![
6588 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
6589 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
6590 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
6591 ]
6592 );
6593 });
6594
6595 view.update(cx, |view, cx| {
6596 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx);
6597 });
6598 view.update(cx, |view, cx| {
6599 view.add_selection_above(&AddSelectionAbove, cx);
6600 assert_eq!(
6601 view.selected_display_ranges(cx),
6602 vec![
6603 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
6604 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
6605 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
6606 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
6607 ]
6608 );
6609 });
6610
6611 view.update(cx, |view, cx| {
6612 view.add_selection_below(&AddSelectionBelow, cx);
6613 assert_eq!(
6614 view.selected_display_ranges(cx),
6615 vec![
6616 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
6617 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
6618 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
6619 ]
6620 );
6621 });
6622 }
6623
6624 #[gpui::test]
6625 async fn test_select_larger_smaller_syntax_node(mut cx: gpui::TestAppContext) {
6626 let settings = cx.read(EditorSettings::test);
6627 let language = Arc::new(Language::new(
6628 LanguageConfig::default(),
6629 Some(tree_sitter_rust::language()),
6630 ));
6631
6632 let text = r#"
6633 use mod1::mod2::{mod3, mod4};
6634
6635 fn fn_1(param1: bool, param2: &str) {
6636 let var1 = "text";
6637 }
6638 "#
6639 .unindent();
6640
6641 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
6642 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6643 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6644 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
6645 .await;
6646
6647 view.update(&mut cx, |view, cx| {
6648 view.select_display_ranges(
6649 &[
6650 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
6651 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
6652 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
6653 ],
6654 cx,
6655 );
6656 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
6657 });
6658 assert_eq!(
6659 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6660 &[
6661 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
6662 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
6663 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
6664 ]
6665 );
6666
6667 view.update(&mut cx, |view, cx| {
6668 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
6669 });
6670 assert_eq!(
6671 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6672 &[
6673 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
6674 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
6675 ]
6676 );
6677
6678 view.update(&mut cx, |view, cx| {
6679 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
6680 });
6681 assert_eq!(
6682 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6683 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
6684 );
6685
6686 // Trying to expand the selected syntax node one more time has no effect.
6687 view.update(&mut cx, |view, cx| {
6688 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
6689 });
6690 assert_eq!(
6691 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6692 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
6693 );
6694
6695 view.update(&mut cx, |view, cx| {
6696 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
6697 });
6698 assert_eq!(
6699 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6700 &[
6701 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
6702 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
6703 ]
6704 );
6705
6706 view.update(&mut cx, |view, cx| {
6707 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
6708 });
6709 assert_eq!(
6710 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6711 &[
6712 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
6713 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
6714 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
6715 ]
6716 );
6717
6718 view.update(&mut cx, |view, cx| {
6719 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
6720 });
6721 assert_eq!(
6722 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6723 &[
6724 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
6725 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
6726 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
6727 ]
6728 );
6729
6730 // Trying to shrink the selected syntax node one more time has no effect.
6731 view.update(&mut cx, |view, cx| {
6732 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
6733 });
6734 assert_eq!(
6735 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6736 &[
6737 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
6738 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
6739 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
6740 ]
6741 );
6742
6743 // Ensure that we keep expanding the selection if the larger selection starts or ends within
6744 // a fold.
6745 view.update(&mut cx, |view, cx| {
6746 view.fold_ranges(
6747 vec![
6748 Point::new(0, 21)..Point::new(0, 24),
6749 Point::new(3, 20)..Point::new(3, 22),
6750 ],
6751 cx,
6752 );
6753 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
6754 });
6755 assert_eq!(
6756 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6757 &[
6758 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
6759 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
6760 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
6761 ]
6762 );
6763 }
6764
6765 #[gpui::test]
6766 async fn test_autoindent_selections(mut cx: gpui::TestAppContext) {
6767 let settings = cx.read(EditorSettings::test);
6768 let language = Arc::new(
6769 Language::new(
6770 LanguageConfig {
6771 brackets: vec![
6772 BracketPair {
6773 start: "{".to_string(),
6774 end: "}".to_string(),
6775 close: false,
6776 newline: true,
6777 },
6778 BracketPair {
6779 start: "(".to_string(),
6780 end: ")".to_string(),
6781 close: false,
6782 newline: true,
6783 },
6784 ],
6785 ..Default::default()
6786 },
6787 Some(tree_sitter_rust::language()),
6788 )
6789 .with_indents_query(
6790 r#"
6791 (_ "(" ")" @end) @indent
6792 (_ "{" "}" @end) @indent
6793 "#,
6794 )
6795 .unwrap(),
6796 );
6797
6798 let text = "fn a() {}";
6799
6800 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
6801 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6802 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6803 editor
6804 .condition(&cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
6805 .await;
6806
6807 editor.update(&mut cx, |editor, cx| {
6808 editor.select_ranges([5..5, 8..8, 9..9], None, cx);
6809 editor.newline(&Newline, cx);
6810 assert_eq!(editor.text(cx), "fn a(\n \n) {\n \n}\n");
6811 assert_eq!(
6812 editor.selected_ranges(cx),
6813 &[
6814 Point::new(1, 4)..Point::new(1, 4),
6815 Point::new(3, 4)..Point::new(3, 4),
6816 Point::new(5, 0)..Point::new(5, 0)
6817 ]
6818 );
6819 });
6820 }
6821
6822 #[gpui::test]
6823 async fn test_autoclose_pairs(mut cx: gpui::TestAppContext) {
6824 let settings = cx.read(EditorSettings::test);
6825 let language = Arc::new(Language::new(
6826 LanguageConfig {
6827 brackets: vec![
6828 BracketPair {
6829 start: "{".to_string(),
6830 end: "}".to_string(),
6831 close: true,
6832 newline: true,
6833 },
6834 BracketPair {
6835 start: "/*".to_string(),
6836 end: " */".to_string(),
6837 close: true,
6838 newline: true,
6839 },
6840 ],
6841 ..Default::default()
6842 },
6843 Some(tree_sitter_rust::language()),
6844 ));
6845
6846 let text = r#"
6847 a
6848
6849 /
6850
6851 "#
6852 .unindent();
6853
6854 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
6855 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6856 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6857 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
6858 .await;
6859
6860 view.update(&mut cx, |view, cx| {
6861 view.select_display_ranges(
6862 &[
6863 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
6864 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6865 ],
6866 cx,
6867 );
6868 view.handle_input(&Input("{".to_string()), cx);
6869 view.handle_input(&Input("{".to_string()), cx);
6870 view.handle_input(&Input("{".to_string()), cx);
6871 assert_eq!(
6872 view.text(cx),
6873 "
6874 {{{}}}
6875 {{{}}}
6876 /
6877
6878 "
6879 .unindent()
6880 );
6881
6882 view.move_right(&MoveRight, cx);
6883 view.handle_input(&Input("}".to_string()), cx);
6884 view.handle_input(&Input("}".to_string()), cx);
6885 view.handle_input(&Input("}".to_string()), cx);
6886 assert_eq!(
6887 view.text(cx),
6888 "
6889 {{{}}}}
6890 {{{}}}}
6891 /
6892
6893 "
6894 .unindent()
6895 );
6896
6897 view.undo(&Undo, cx);
6898 view.handle_input(&Input("/".to_string()), cx);
6899 view.handle_input(&Input("*".to_string()), cx);
6900 assert_eq!(
6901 view.text(cx),
6902 "
6903 /* */
6904 /* */
6905 /
6906
6907 "
6908 .unindent()
6909 );
6910
6911 view.undo(&Undo, cx);
6912 view.select_display_ranges(
6913 &[
6914 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6915 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6916 ],
6917 cx,
6918 );
6919 view.handle_input(&Input("*".to_string()), cx);
6920 assert_eq!(
6921 view.text(cx),
6922 "
6923 a
6924
6925 /*
6926 *
6927 "
6928 .unindent()
6929 );
6930 });
6931 }
6932
6933 #[gpui::test]
6934 async fn test_snippets(mut cx: gpui::TestAppContext) {
6935 let settings = cx.read(EditorSettings::test);
6936
6937 let text = "a. b";
6938 let buffer = cx.update(|cx| MultiBuffer::build_simple(&text, cx));
6939 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6940
6941 editor.update(&mut cx, |editor, cx| {
6942 editor
6943 .insert_snippet(2..2, "f(${1:one}, ${2:two})$0", cx)
6944 .unwrap();
6945 assert_eq!(editor.text(cx), "a.f(one, two) b");
6946 assert_eq!(editor.selected_ranges::<usize>(cx), &[4..7]);
6947
6948 // Can't move earlier than the first tab stop
6949 assert!(!editor.move_to_prev_snippet_tabstop(cx));
6950
6951 assert!(editor.move_to_next_snippet_tabstop(cx));
6952 assert_eq!(editor.selected_ranges::<usize>(cx), &[9..12]);
6953
6954 assert!(editor.move_to_prev_snippet_tabstop(cx));
6955 assert_eq!(editor.selected_ranges::<usize>(cx), &[4..7]);
6956
6957 assert!(editor.move_to_next_snippet_tabstop(cx));
6958 assert!(editor.move_to_next_snippet_tabstop(cx));
6959 assert_eq!(editor.selected_ranges::<usize>(cx), &[13..13]);
6960
6961 // As soon as the last tab stop is reached, snippet state is gone
6962 assert!(!editor.move_to_prev_snippet_tabstop(cx));
6963 });
6964 }
6965
6966 #[gpui::test]
6967 async fn test_completion(mut cx: gpui::TestAppContext) {
6968 let settings = cx.read(EditorSettings::test);
6969 let (language_server, mut fake) = lsp::LanguageServer::fake_with_capabilities(
6970 lsp::ServerCapabilities {
6971 completion_provider: Some(lsp::CompletionOptions {
6972 trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
6973 ..Default::default()
6974 }),
6975 ..Default::default()
6976 },
6977 cx.background(),
6978 )
6979 .await;
6980
6981 let text = "
6982 one
6983 two
6984 three
6985 "
6986 .unindent();
6987 let buffer = cx.add_model(|cx| {
6988 Buffer::from_file(
6989 0,
6990 text,
6991 Box::new(FakeFile {
6992 path: Arc::from(Path::new("/the/file")),
6993 }),
6994 cx,
6995 )
6996 .with_language_server(language_server, cx)
6997 });
6998 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6999 buffer.next_notification(&cx).await;
7000
7001 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7002
7003 editor.update(&mut cx, |editor, cx| {
7004 editor.select_ranges([3..3], None, cx);
7005 editor.handle_input(&Input(".".to_string()), cx);
7006 });
7007
7008 let (id, params) = fake.receive_request::<lsp::request::Completion>().await;
7009 assert_eq!(
7010 params.text_document_position.text_document.uri,
7011 lsp::Url::from_file_path("/the/file").unwrap()
7012 );
7013 assert_eq!(
7014 params.text_document_position.position,
7015 lsp::Position::new(0, 4)
7016 );
7017
7018 fake.respond(
7019 id,
7020 Some(lsp::CompletionResponse::Array(vec![
7021 lsp::CompletionItem {
7022 text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
7023 range: lsp::Range::new(lsp::Position::new(0, 4), lsp::Position::new(0, 4)),
7024 new_text: "first_completion".to_string(),
7025 })),
7026 ..Default::default()
7027 },
7028 lsp::CompletionItem {
7029 text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
7030 range: lsp::Range::new(lsp::Position::new(0, 4), lsp::Position::new(0, 4)),
7031 new_text: "second_completion".to_string(),
7032 })),
7033 ..Default::default()
7034 },
7035 ])),
7036 )
7037 .await;
7038
7039 editor.next_notification(&cx).await;
7040
7041 let apply_additional_edits = editor.update(&mut cx, |editor, cx| {
7042 editor.move_down(&MoveDown, cx);
7043 let apply_additional_edits = editor.confirm_completion(None, cx).unwrap();
7044 assert_eq!(
7045 editor.text(cx),
7046 "
7047 one.second_completion
7048 two
7049 three
7050 "
7051 .unindent()
7052 );
7053 apply_additional_edits
7054 });
7055
7056 let (id, _) = fake
7057 .receive_request::<lsp::request::ResolveCompletionItem>()
7058 .await;
7059 fake.respond(
7060 id,
7061 lsp::CompletionItem {
7062 additional_text_edits: Some(vec![lsp::TextEdit::new(
7063 lsp::Range::new(lsp::Position::new(2, 5), lsp::Position::new(2, 5)),
7064 "\nadditional edit".to_string(),
7065 )]),
7066 ..Default::default()
7067 },
7068 )
7069 .await;
7070
7071 apply_additional_edits.await.unwrap();
7072 assert_eq!(
7073 editor.read_with(&cx, |editor, cx| editor.text(cx)),
7074 "
7075 one.second_completion
7076 two
7077 three
7078 additional edit
7079 "
7080 .unindent()
7081 );
7082 }
7083
7084 #[gpui::test]
7085 async fn test_toggle_comment(mut cx: gpui::TestAppContext) {
7086 let settings = cx.read(EditorSettings::test);
7087 let language = Arc::new(Language::new(
7088 LanguageConfig {
7089 line_comment: Some("// ".to_string()),
7090 ..Default::default()
7091 },
7092 Some(tree_sitter_rust::language()),
7093 ));
7094
7095 let text = "
7096 fn a() {
7097 //b();
7098 // c();
7099 // d();
7100 }
7101 "
7102 .unindent();
7103
7104 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7105 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7106 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7107
7108 view.update(&mut cx, |editor, cx| {
7109 // If multiple selections intersect a line, the line is only
7110 // toggled once.
7111 editor.select_display_ranges(
7112 &[
7113 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
7114 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
7115 ],
7116 cx,
7117 );
7118 editor.toggle_comments(&ToggleComments, cx);
7119 assert_eq!(
7120 editor.text(cx),
7121 "
7122 fn a() {
7123 b();
7124 c();
7125 d();
7126 }
7127 "
7128 .unindent()
7129 );
7130
7131 // The comment prefix is inserted at the same column for every line
7132 // in a selection.
7133 editor.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx);
7134 editor.toggle_comments(&ToggleComments, cx);
7135 assert_eq!(
7136 editor.text(cx),
7137 "
7138 fn a() {
7139 // b();
7140 // c();
7141 // d();
7142 }
7143 "
7144 .unindent()
7145 );
7146
7147 // If a selection ends at the beginning of a line, that line is not toggled.
7148 editor.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx);
7149 editor.toggle_comments(&ToggleComments, cx);
7150 assert_eq!(
7151 editor.text(cx),
7152 "
7153 fn a() {
7154 // b();
7155 c();
7156 // d();
7157 }
7158 "
7159 .unindent()
7160 );
7161 });
7162 }
7163
7164 #[gpui::test]
7165 fn test_editing_disjoint_excerpts(cx: &mut gpui::MutableAppContext) {
7166 let settings = EditorSettings::test(cx);
7167 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
7168 let multibuffer = cx.add_model(|cx| {
7169 let mut multibuffer = MultiBuffer::new(0);
7170 multibuffer.push_excerpt(
7171 ExcerptProperties {
7172 buffer: &buffer,
7173 range: Point::new(0, 0)..Point::new(0, 4),
7174 },
7175 cx,
7176 );
7177 multibuffer.push_excerpt(
7178 ExcerptProperties {
7179 buffer: &buffer,
7180 range: Point::new(1, 0)..Point::new(1, 4),
7181 },
7182 cx,
7183 );
7184 multibuffer
7185 });
7186
7187 assert_eq!(multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb");
7188
7189 let (_, view) = cx.add_window(Default::default(), |cx| {
7190 build_editor(multibuffer, settings, cx)
7191 });
7192 view.update(cx, |view, cx| {
7193 view.select_display_ranges(
7194 &[
7195 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7196 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7197 ],
7198 cx,
7199 );
7200
7201 view.handle_input(&Input("X".to_string()), cx);
7202 assert_eq!(view.text(cx), "Xaaaa\nXbbbb");
7203 assert_eq!(
7204 view.selected_display_ranges(cx),
7205 &[
7206 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7207 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7208 ]
7209 )
7210 });
7211 }
7212
7213 #[gpui::test]
7214 fn test_editing_overlapping_excerpts(cx: &mut gpui::MutableAppContext) {
7215 let settings = EditorSettings::test(cx);
7216 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
7217 let multibuffer = cx.add_model(|cx| {
7218 let mut multibuffer = MultiBuffer::new(0);
7219 multibuffer.push_excerpt(
7220 ExcerptProperties {
7221 buffer: &buffer,
7222 range: Point::new(0, 0)..Point::new(1, 4),
7223 },
7224 cx,
7225 );
7226 multibuffer.push_excerpt(
7227 ExcerptProperties {
7228 buffer: &buffer,
7229 range: Point::new(1, 0)..Point::new(2, 4),
7230 },
7231 cx,
7232 );
7233 multibuffer
7234 });
7235
7236 assert_eq!(
7237 multibuffer.read(cx).read(cx).text(),
7238 "aaaa\nbbbb\nbbbb\ncccc"
7239 );
7240
7241 let (_, view) = cx.add_window(Default::default(), |cx| {
7242 build_editor(multibuffer, settings, cx)
7243 });
7244 view.update(cx, |view, cx| {
7245 view.select_display_ranges(
7246 &[
7247 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7248 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
7249 ],
7250 cx,
7251 );
7252
7253 view.handle_input(&Input("X".to_string()), cx);
7254 assert_eq!(view.text(cx), "aaaa\nbXbbXb\nbXbbXb\ncccc");
7255 assert_eq!(
7256 view.selected_display_ranges(cx),
7257 &[
7258 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7259 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7260 ]
7261 );
7262
7263 view.newline(&Newline, cx);
7264 assert_eq!(view.text(cx), "aaaa\nbX\nbbX\nb\nbX\nbbX\nb\ncccc");
7265 assert_eq!(
7266 view.selected_display_ranges(cx),
7267 &[
7268 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
7269 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
7270 ]
7271 );
7272 });
7273 }
7274
7275 #[gpui::test]
7276 fn test_refresh_selections(cx: &mut gpui::MutableAppContext) {
7277 let settings = EditorSettings::test(cx);
7278 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
7279 let mut excerpt1_id = None;
7280 let multibuffer = cx.add_model(|cx| {
7281 let mut multibuffer = MultiBuffer::new(0);
7282 excerpt1_id = Some(multibuffer.push_excerpt(
7283 ExcerptProperties {
7284 buffer: &buffer,
7285 range: Point::new(0, 0)..Point::new(1, 4),
7286 },
7287 cx,
7288 ));
7289 multibuffer.push_excerpt(
7290 ExcerptProperties {
7291 buffer: &buffer,
7292 range: Point::new(1, 0)..Point::new(2, 4),
7293 },
7294 cx,
7295 );
7296 multibuffer
7297 });
7298 assert_eq!(
7299 multibuffer.read(cx).read(cx).text(),
7300 "aaaa\nbbbb\nbbbb\ncccc"
7301 );
7302 let (_, editor) = cx.add_window(Default::default(), |cx| {
7303 let mut editor = build_editor(multibuffer.clone(), settings, cx);
7304 editor.select_display_ranges(
7305 &[
7306 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7307 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7308 ],
7309 cx,
7310 );
7311 editor
7312 });
7313
7314 // Refreshing selections is a no-op when excerpts haven't changed.
7315 editor.update(cx, |editor, cx| {
7316 editor.refresh_selections(cx);
7317 assert_eq!(
7318 editor.selected_display_ranges(cx),
7319 [
7320 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7321 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7322 ]
7323 );
7324 });
7325
7326 multibuffer.update(cx, |multibuffer, cx| {
7327 multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx);
7328 });
7329 editor.update(cx, |editor, cx| {
7330 // Removing an excerpt causes the first selection to become degenerate.
7331 assert_eq!(
7332 editor.selected_display_ranges(cx),
7333 [
7334 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7335 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
7336 ]
7337 );
7338
7339 // Refreshing selections will relocate the first selection to the original buffer
7340 // location.
7341 editor.refresh_selections(cx);
7342 assert_eq!(
7343 editor.selected_display_ranges(cx),
7344 [
7345 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7346 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3)
7347 ]
7348 );
7349 });
7350 }
7351
7352 #[gpui::test]
7353 async fn test_extra_newline_insertion(mut cx: gpui::TestAppContext) {
7354 let settings = cx.read(EditorSettings::test);
7355 let language = Arc::new(Language::new(
7356 LanguageConfig {
7357 brackets: vec![
7358 BracketPair {
7359 start: "{".to_string(),
7360 end: "}".to_string(),
7361 close: true,
7362 newline: true,
7363 },
7364 BracketPair {
7365 start: "/* ".to_string(),
7366 end: " */".to_string(),
7367 close: true,
7368 newline: true,
7369 },
7370 ],
7371 ..Default::default()
7372 },
7373 Some(tree_sitter_rust::language()),
7374 ));
7375
7376 let text = concat!(
7377 "{ }\n", // Suppress rustfmt
7378 " x\n", //
7379 " /* */\n", //
7380 "x\n", //
7381 "{{} }\n", //
7382 );
7383
7384 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7385 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7386 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7387 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
7388 .await;
7389
7390 view.update(&mut cx, |view, cx| {
7391 view.select_display_ranges(
7392 &[
7393 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
7394 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7395 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
7396 ],
7397 cx,
7398 );
7399 view.newline(&Newline, cx);
7400
7401 assert_eq!(
7402 view.buffer().read(cx).read(cx).text(),
7403 concat!(
7404 "{ \n", // Suppress rustfmt
7405 "\n", //
7406 "}\n", //
7407 " x\n", //
7408 " /* \n", //
7409 " \n", //
7410 " */\n", //
7411 "x\n", //
7412 "{{} \n", //
7413 "}\n", //
7414 )
7415 );
7416 });
7417 }
7418
7419 #[gpui::test]
7420 fn test_highlighted_ranges(cx: &mut gpui::MutableAppContext) {
7421 let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
7422 let settings = EditorSettings::test(&cx);
7423 let (_, editor) = cx.add_window(Default::default(), |cx| {
7424 build_editor(buffer.clone(), settings, cx)
7425 });
7426
7427 editor.update(cx, |editor, cx| {
7428 struct Type1;
7429 struct Type2;
7430
7431 let buffer = buffer.read(cx).snapshot(cx);
7432
7433 let anchor_range = |range: Range<Point>| {
7434 buffer.anchor_after(range.start)..buffer.anchor_after(range.end)
7435 };
7436
7437 editor.highlight_ranges::<Type1>(
7438 vec![
7439 anchor_range(Point::new(2, 1)..Point::new(2, 3)),
7440 anchor_range(Point::new(4, 2)..Point::new(4, 4)),
7441 anchor_range(Point::new(6, 3)..Point::new(6, 5)),
7442 anchor_range(Point::new(8, 4)..Point::new(8, 6)),
7443 ],
7444 Color::red(),
7445 cx,
7446 );
7447 editor.highlight_ranges::<Type2>(
7448 vec![
7449 anchor_range(Point::new(3, 2)..Point::new(3, 5)),
7450 anchor_range(Point::new(5, 3)..Point::new(5, 6)),
7451 anchor_range(Point::new(7, 4)..Point::new(7, 7)),
7452 anchor_range(Point::new(9, 5)..Point::new(9, 8)),
7453 ],
7454 Color::green(),
7455 cx,
7456 );
7457
7458 let snapshot = editor.snapshot(cx);
7459 let mut highlighted_ranges = editor.highlighted_ranges_in_range(
7460 anchor_range(Point::new(3, 4)..Point::new(7, 4)),
7461 &snapshot,
7462 );
7463 // Enforce a consistent ordering based on color without relying on the ordering of the
7464 // highlight's `TypeId` which is non-deterministic.
7465 highlighted_ranges.sort_unstable_by_key(|(_, color)| *color);
7466 assert_eq!(
7467 highlighted_ranges,
7468 &[
7469 (
7470 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 5),
7471 Color::green(),
7472 ),
7473 (
7474 DisplayPoint::new(5, 3)..DisplayPoint::new(5, 6),
7475 Color::green(),
7476 ),
7477 (
7478 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 4),
7479 Color::red(),
7480 ),
7481 (
7482 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
7483 Color::red(),
7484 ),
7485 ]
7486 );
7487 assert_eq!(
7488 editor.highlighted_ranges_in_range(
7489 anchor_range(Point::new(5, 6)..Point::new(6, 4)),
7490 &snapshot,
7491 ),
7492 &[(
7493 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
7494 Color::red(),
7495 )]
7496 );
7497 });
7498 }
7499
7500 #[test]
7501 fn test_combine_syntax_and_fuzzy_match_highlights() {
7502 let string = "abcdefghijklmnop";
7503 let default = HighlightStyle::default();
7504 let syntax_ranges = [
7505 (
7506 0..3,
7507 HighlightStyle {
7508 color: Color::red(),
7509 ..default
7510 },
7511 ),
7512 (
7513 4..8,
7514 HighlightStyle {
7515 color: Color::green(),
7516 ..default
7517 },
7518 ),
7519 ];
7520 let match_indices = [4, 6, 7, 8];
7521 assert_eq!(
7522 combine_syntax_and_fuzzy_match_highlights(
7523 &string,
7524 default,
7525 syntax_ranges.into_iter(),
7526 &match_indices,
7527 ),
7528 &[
7529 (
7530 0..3,
7531 HighlightStyle {
7532 color: Color::red(),
7533 ..default
7534 },
7535 ),
7536 (
7537 4..5,
7538 HighlightStyle {
7539 color: Color::green(),
7540 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
7541 ..default
7542 },
7543 ),
7544 (
7545 5..6,
7546 HighlightStyle {
7547 color: Color::green(),
7548 ..default
7549 },
7550 ),
7551 (
7552 6..8,
7553 HighlightStyle {
7554 color: Color::green(),
7555 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
7556 ..default
7557 },
7558 ),
7559 (
7560 8..9,
7561 HighlightStyle {
7562 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
7563 ..default
7564 },
7565 ),
7566 ]
7567 );
7568 }
7569
7570 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
7571 let point = DisplayPoint::new(row as u32, column as u32);
7572 point..point
7573 }
7574
7575 fn build_editor(
7576 buffer: ModelHandle<MultiBuffer>,
7577 settings: EditorSettings,
7578 cx: &mut ViewContext<Editor>,
7579 ) -> Editor {
7580 Editor::for_buffer(buffer, Arc::new(move |_| settings.clone()), cx)
7581 }
7582}
7583
7584trait RangeExt<T> {
7585 fn sorted(&self) -> Range<T>;
7586 fn to_inclusive(&self) -> RangeInclusive<T>;
7587}
7588
7589impl<T: Ord + Clone> RangeExt<T> for Range<T> {
7590 fn sorted(&self) -> Self {
7591 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
7592 }
7593
7594 fn to_inclusive(&self) -> RangeInclusive<T> {
7595 self.start.clone()..=self.end.clone()
7596 }
7597}