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("tab", ConfirmCompletion(None), Some("Editor && completing")),
150 Binding::new("shift-tab", Outdent, Some("Editor")),
151 Binding::new("ctrl-shift-K", DeleteLine, Some("Editor")),
152 Binding::new(
153 "alt-backspace",
154 DeleteToPreviousWordBoundary,
155 Some("Editor"),
156 ),
157 Binding::new("alt-h", DeleteToPreviousWordBoundary, Some("Editor")),
158 Binding::new("alt-delete", DeleteToNextWordBoundary, Some("Editor")),
159 Binding::new("alt-d", DeleteToNextWordBoundary, Some("Editor")),
160 Binding::new("cmd-backspace", DeleteToBeginningOfLine, Some("Editor")),
161 Binding::new("cmd-delete", DeleteToEndOfLine, Some("Editor")),
162 Binding::new("ctrl-k", CutToEndOfLine, Some("Editor")),
163 Binding::new("cmd-shift-D", DuplicateLine, Some("Editor")),
164 Binding::new("ctrl-cmd-up", MoveLineUp, Some("Editor")),
165 Binding::new("ctrl-cmd-down", MoveLineDown, Some("Editor")),
166 Binding::new("cmd-x", Cut, Some("Editor")),
167 Binding::new("cmd-c", Copy, Some("Editor")),
168 Binding::new("cmd-v", Paste, Some("Editor")),
169 Binding::new("cmd-z", Undo, Some("Editor")),
170 Binding::new("cmd-shift-Z", Redo, Some("Editor")),
171 Binding::new("up", MoveUp, Some("Editor")),
172 Binding::new("down", MoveDown, Some("Editor")),
173 Binding::new("left", MoveLeft, Some("Editor")),
174 Binding::new("right", MoveRight, Some("Editor")),
175 Binding::new("ctrl-p", MoveUp, Some("Editor")),
176 Binding::new("ctrl-n", MoveDown, Some("Editor")),
177 Binding::new("ctrl-b", MoveLeft, Some("Editor")),
178 Binding::new("ctrl-f", MoveRight, Some("Editor")),
179 Binding::new("alt-left", MoveToPreviousWordBoundary, Some("Editor")),
180 Binding::new("alt-b", MoveToPreviousWordBoundary, Some("Editor")),
181 Binding::new("alt-right", MoveToNextWordBoundary, Some("Editor")),
182 Binding::new("alt-f", MoveToNextWordBoundary, Some("Editor")),
183 Binding::new("cmd-left", MoveToBeginningOfLine, Some("Editor")),
184 Binding::new("ctrl-a", MoveToBeginningOfLine, Some("Editor")),
185 Binding::new("cmd-right", MoveToEndOfLine, Some("Editor")),
186 Binding::new("ctrl-e", MoveToEndOfLine, Some("Editor")),
187 Binding::new("cmd-up", MoveToBeginning, Some("Editor")),
188 Binding::new("cmd-down", MoveToEnd, Some("Editor")),
189 Binding::new("shift-up", SelectUp, Some("Editor")),
190 Binding::new("ctrl-shift-P", SelectUp, Some("Editor")),
191 Binding::new("shift-down", SelectDown, Some("Editor")),
192 Binding::new("ctrl-shift-N", SelectDown, Some("Editor")),
193 Binding::new("shift-left", SelectLeft, Some("Editor")),
194 Binding::new("ctrl-shift-B", SelectLeft, Some("Editor")),
195 Binding::new("shift-right", SelectRight, Some("Editor")),
196 Binding::new("ctrl-shift-F", SelectRight, Some("Editor")),
197 Binding::new(
198 "alt-shift-left",
199 SelectToPreviousWordBoundary,
200 Some("Editor"),
201 ),
202 Binding::new("alt-shift-B", SelectToPreviousWordBoundary, Some("Editor")),
203 Binding::new("alt-shift-right", SelectToNextWordBoundary, Some("Editor")),
204 Binding::new("alt-shift-F", SelectToNextWordBoundary, Some("Editor")),
205 Binding::new(
206 "cmd-shift-left",
207 SelectToBeginningOfLine(true),
208 Some("Editor"),
209 ),
210 Binding::new(
211 "ctrl-shift-A",
212 SelectToBeginningOfLine(true),
213 Some("Editor"),
214 ),
215 Binding::new("cmd-shift-right", SelectToEndOfLine, Some("Editor")),
216 Binding::new("ctrl-shift-E", SelectToEndOfLine, Some("Editor")),
217 Binding::new("cmd-shift-up", SelectToBeginning, Some("Editor")),
218 Binding::new("cmd-shift-down", SelectToEnd, Some("Editor")),
219 Binding::new("cmd-a", SelectAll, Some("Editor")),
220 Binding::new("cmd-l", SelectLine, Some("Editor")),
221 Binding::new("cmd-shift-L", SplitSelectionIntoLines, Some("Editor")),
222 Binding::new("cmd-alt-up", AddSelectionAbove, Some("Editor")),
223 Binding::new("cmd-ctrl-p", AddSelectionAbove, Some("Editor")),
224 Binding::new("cmd-alt-down", AddSelectionBelow, Some("Editor")),
225 Binding::new("cmd-ctrl-n", AddSelectionBelow, Some("Editor")),
226 Binding::new("cmd-d", SelectNext(false), Some("Editor")),
227 Binding::new("cmd-k cmd-d", SelectNext(true), Some("Editor")),
228 Binding::new("cmd-/", ToggleComments, Some("Editor")),
229 Binding::new("alt-up", SelectLargerSyntaxNode, Some("Editor")),
230 Binding::new("ctrl-w", SelectLargerSyntaxNode, Some("Editor")),
231 Binding::new("alt-down", SelectSmallerSyntaxNode, Some("Editor")),
232 Binding::new("ctrl-shift-W", SelectSmallerSyntaxNode, Some("Editor")),
233 Binding::new("f8", ShowNextDiagnostic, Some("Editor")),
234 Binding::new("f12", GoToDefinition, Some("Editor")),
235 Binding::new("ctrl-m", MoveToEnclosingBracket, Some("Editor")),
236 Binding::new("pageup", PageUp, Some("Editor")),
237 Binding::new("pagedown", PageDown, Some("Editor")),
238 Binding::new("alt-cmd-[", Fold, Some("Editor")),
239 Binding::new("alt-cmd-]", Unfold, Some("Editor")),
240 Binding::new("alt-cmd-f", FoldSelectedRanges, Some("Editor")),
241 Binding::new("ctrl-space", ShowCompletions, Some("Editor")),
242 ]);
243
244 cx.add_action(Editor::open_new);
245 cx.add_action(|this: &mut Editor, action: &Scroll, cx| this.set_scroll_position(action.0, cx));
246 cx.add_action(Editor::select);
247 cx.add_action(Editor::cancel);
248 cx.add_action(Editor::handle_input);
249 cx.add_action(Editor::newline);
250 cx.add_action(Editor::backspace);
251 cx.add_action(Editor::delete);
252 cx.add_action(Editor::tab);
253 cx.add_action(Editor::outdent);
254 cx.add_action(Editor::delete_line);
255 cx.add_action(Editor::delete_to_previous_word_boundary);
256 cx.add_action(Editor::delete_to_next_word_boundary);
257 cx.add_action(Editor::delete_to_beginning_of_line);
258 cx.add_action(Editor::delete_to_end_of_line);
259 cx.add_action(Editor::cut_to_end_of_line);
260 cx.add_action(Editor::duplicate_line);
261 cx.add_action(Editor::move_line_up);
262 cx.add_action(Editor::move_line_down);
263 cx.add_action(Editor::cut);
264 cx.add_action(Editor::copy);
265 cx.add_action(Editor::paste);
266 cx.add_action(Editor::undo);
267 cx.add_action(Editor::redo);
268 cx.add_action(Editor::move_up);
269 cx.add_action(Editor::move_down);
270 cx.add_action(Editor::move_left);
271 cx.add_action(Editor::move_right);
272 cx.add_action(Editor::move_to_previous_word_boundary);
273 cx.add_action(Editor::move_to_next_word_boundary);
274 cx.add_action(Editor::move_to_beginning_of_line);
275 cx.add_action(Editor::move_to_end_of_line);
276 cx.add_action(Editor::move_to_beginning);
277 cx.add_action(Editor::move_to_end);
278 cx.add_action(Editor::select_up);
279 cx.add_action(Editor::select_down);
280 cx.add_action(Editor::select_left);
281 cx.add_action(Editor::select_right);
282 cx.add_action(Editor::select_to_previous_word_boundary);
283 cx.add_action(Editor::select_to_next_word_boundary);
284 cx.add_action(Editor::select_to_beginning_of_line);
285 cx.add_action(Editor::select_to_end_of_line);
286 cx.add_action(Editor::select_to_beginning);
287 cx.add_action(Editor::select_to_end);
288 cx.add_action(Editor::select_all);
289 cx.add_action(Editor::select_line);
290 cx.add_action(Editor::split_selection_into_lines);
291 cx.add_action(Editor::add_selection_above);
292 cx.add_action(Editor::add_selection_below);
293 cx.add_action(Editor::select_next);
294 cx.add_action(Editor::toggle_comments);
295 cx.add_action(Editor::select_larger_syntax_node);
296 cx.add_action(Editor::select_smaller_syntax_node);
297 cx.add_action(Editor::move_to_enclosing_bracket);
298 cx.add_action(Editor::show_next_diagnostic);
299 cx.add_action(Editor::go_to_definition);
300 cx.add_action(Editor::page_up);
301 cx.add_action(Editor::page_down);
302 cx.add_action(Editor::fold);
303 cx.add_action(Editor::unfold);
304 cx.add_action(Editor::fold_selected_ranges);
305 cx.add_action(Editor::show_completions);
306 cx.add_action(
307 |editor: &mut Editor, &ConfirmCompletion(ix): &ConfirmCompletion, cx| {
308 if let Some(task) = editor.confirm_completion(ix, cx) {
309 task.detach_and_log_err(cx);
310 }
311 },
312 );
313}
314
315trait SelectionExt {
316 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize>;
317 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point>;
318 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint>;
319 fn spanned_rows(&self, include_end_if_at_line_start: bool, map: &DisplaySnapshot)
320 -> Range<u32>;
321}
322
323trait InvalidationRegion {
324 fn ranges(&self) -> &[Range<Anchor>];
325}
326
327#[derive(Clone, Debug)]
328pub enum SelectPhase {
329 Begin {
330 position: DisplayPoint,
331 add: bool,
332 click_count: usize,
333 },
334 BeginColumnar {
335 position: DisplayPoint,
336 overshoot: u32,
337 },
338 Extend {
339 position: DisplayPoint,
340 click_count: usize,
341 },
342 Update {
343 position: DisplayPoint,
344 overshoot: u32,
345 scroll_position: Vector2F,
346 },
347 End,
348}
349
350#[derive(Clone, Debug)]
351enum SelectMode {
352 Character,
353 Word(Range<Anchor>),
354 Line(Range<Anchor>),
355 All,
356}
357
358#[derive(PartialEq, Eq)]
359pub enum Autoscroll {
360 Fit,
361 Center,
362 Newest,
363}
364
365#[derive(Copy, Clone, PartialEq, Eq)]
366pub enum EditorMode {
367 SingleLine,
368 AutoHeight { max_lines: usize },
369 Full,
370}
371
372#[derive(Clone)]
373pub struct EditorSettings {
374 pub tab_size: usize,
375 pub soft_wrap: SoftWrap,
376 pub style: EditorStyle,
377}
378
379#[derive(Clone)]
380pub enum SoftWrap {
381 None,
382 EditorWidth,
383 Column(u32),
384}
385
386type CompletionId = usize;
387
388pub type BuildSettings = Arc<dyn 'static + Send + Sync + Fn(&AppContext) -> EditorSettings>;
389
390pub struct Editor {
391 handle: WeakViewHandle<Self>,
392 buffer: ModelHandle<MultiBuffer>,
393 display_map: ModelHandle<DisplayMap>,
394 next_selection_id: usize,
395 selections: Arc<[Selection<Anchor>]>,
396 pending_selection: Option<PendingSelection>,
397 columnar_selection_tail: Option<Anchor>,
398 add_selections_state: Option<AddSelectionsState>,
399 select_next_state: Option<SelectNextState>,
400 selection_history:
401 HashMap<TransactionId, (Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)>,
402 autoclose_stack: InvalidationStack<BracketPairState>,
403 snippet_stack: InvalidationStack<SnippetState>,
404 select_larger_syntax_node_stack: Vec<Box<[Selection<usize>]>>,
405 active_diagnostics: Option<ActiveDiagnosticGroup>,
406 scroll_position: Vector2F,
407 scroll_top_anchor: Option<Anchor>,
408 autoscroll_request: Option<Autoscroll>,
409 build_settings: BuildSettings,
410 focused: bool,
411 show_local_cursors: bool,
412 blink_epoch: usize,
413 blinking_paused: bool,
414 mode: EditorMode,
415 vertical_scroll_margin: f32,
416 placeholder_text: Option<Arc<str>>,
417 highlighted_rows: Option<Range<u32>>,
418 highlighted_ranges: BTreeMap<TypeId, (Color, Vec<Range<Anchor>>)>,
419 nav_history: Option<ItemNavHistory>,
420 completion_state: Option<CompletionState>,
421 completion_tasks: Vec<(CompletionId, Task<Option<()>>)>,
422 next_completion_id: CompletionId,
423}
424
425pub struct EditorSnapshot {
426 pub mode: EditorMode,
427 pub display_snapshot: DisplaySnapshot,
428 pub placeholder_text: Option<Arc<str>>,
429 is_focused: bool,
430 scroll_position: Vector2F,
431 scroll_top_anchor: Option<Anchor>,
432}
433
434struct PendingSelection {
435 selection: Selection<Anchor>,
436 mode: SelectMode,
437}
438
439struct AddSelectionsState {
440 above: bool,
441 stack: Vec<usize>,
442}
443
444struct SelectNextState {
445 query: AhoCorasick,
446 wordwise: bool,
447 done: bool,
448}
449
450struct BracketPairState {
451 ranges: Vec<Range<Anchor>>,
452 pair: BracketPair,
453}
454
455struct SnippetState {
456 ranges: Vec<Vec<Range<Anchor>>>,
457 active_index: usize,
458}
459
460struct InvalidationStack<T>(Vec<T>);
461
462struct CompletionState {
463 id: CompletionId,
464 initial_position: Anchor,
465 completions: Arc<[Completion<Anchor>]>,
466 match_candidates: Vec<StringMatchCandidate>,
467 matches: Arc<[StringMatch]>,
468 selected_item: usize,
469 list: UniformListState,
470}
471
472impl CompletionState {
473 pub async fn filter(&mut self, query: Option<&str>, executor: Arc<executor::Background>) {
474 let mut matches = if let Some(query) = query {
475 fuzzy::match_strings(
476 &self.match_candidates,
477 query,
478 false,
479 100,
480 &Default::default(),
481 executor,
482 )
483 .await
484 } else {
485 self.match_candidates
486 .iter()
487 .enumerate()
488 .map(|(candidate_id, candidate)| StringMatch {
489 candidate_id,
490 score: Default::default(),
491 positions: Default::default(),
492 string: candidate.string.clone(),
493 })
494 .collect()
495 };
496 matches.sort_unstable_by_key(|mat| {
497 (
498 Reverse(OrderedFloat(mat.score)),
499 self.completions[mat.candidate_id].sort_key(),
500 )
501 });
502
503 for mat in &mut matches {
504 let filter_start = self.completions[mat.candidate_id].label.filter_range.start;
505 for position in &mut mat.positions {
506 *position += filter_start;
507 }
508 }
509
510 self.matches = matches.into();
511 }
512}
513
514#[derive(Debug)]
515struct ActiveDiagnosticGroup {
516 primary_range: Range<Anchor>,
517 primary_message: String,
518 blocks: HashMap<BlockId, Diagnostic>,
519 is_valid: bool,
520}
521
522#[derive(Serialize, Deserialize)]
523struct ClipboardSelection {
524 len: usize,
525 is_entire_line: bool,
526}
527
528pub struct NavigationData {
529 anchor: Anchor,
530 offset: usize,
531}
532
533impl Editor {
534 pub fn single_line(build_settings: BuildSettings, cx: &mut ViewContext<Self>) -> Self {
535 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
536 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
537 let mut view = Self::for_buffer(buffer, build_settings, cx);
538 view.mode = EditorMode::SingleLine;
539 view
540 }
541
542 pub fn auto_height(
543 max_lines: usize,
544 build_settings: BuildSettings,
545 cx: &mut ViewContext<Self>,
546 ) -> Self {
547 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
548 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
549 let mut view = Self::for_buffer(buffer, build_settings, cx);
550 view.mode = EditorMode::AutoHeight { max_lines };
551 view
552 }
553
554 pub fn for_buffer(
555 buffer: ModelHandle<MultiBuffer>,
556 build_settings: BuildSettings,
557 cx: &mut ViewContext<Self>,
558 ) -> Self {
559 Self::new(buffer, build_settings, cx)
560 }
561
562 pub fn clone(&self, cx: &mut ViewContext<Self>) -> Self {
563 let mut clone = Self::new(self.buffer.clone(), self.build_settings.clone(), cx);
564 clone.scroll_position = self.scroll_position;
565 clone.scroll_top_anchor = self.scroll_top_anchor.clone();
566 clone.nav_history = self
567 .nav_history
568 .as_ref()
569 .map(|nav_history| ItemNavHistory::new(nav_history.history(), &cx.handle()));
570 clone
571 }
572
573 pub fn new(
574 buffer: ModelHandle<MultiBuffer>,
575 build_settings: BuildSettings,
576 cx: &mut ViewContext<Self>,
577 ) -> Self {
578 let settings = build_settings(cx);
579 let display_map = cx.add_model(|cx| {
580 DisplayMap::new(
581 buffer.clone(),
582 settings.tab_size,
583 settings.style.text.font_id,
584 settings.style.text.font_size,
585 None,
586 cx,
587 )
588 });
589 cx.observe(&buffer, Self::on_buffer_changed).detach();
590 cx.subscribe(&buffer, Self::on_buffer_event).detach();
591 cx.observe(&display_map, Self::on_display_map_changed)
592 .detach();
593
594 let mut this = Self {
595 handle: cx.weak_handle(),
596 buffer,
597 display_map,
598 selections: Arc::from([]),
599 pending_selection: None,
600 columnar_selection_tail: None,
601 next_selection_id: 0,
602 add_selections_state: None,
603 select_next_state: None,
604 selection_history: Default::default(),
605 autoclose_stack: Default::default(),
606 snippet_stack: Default::default(),
607 select_larger_syntax_node_stack: Vec::new(),
608 active_diagnostics: None,
609 build_settings,
610 scroll_position: Vector2F::zero(),
611 scroll_top_anchor: None,
612 autoscroll_request: None,
613 focused: false,
614 show_local_cursors: false,
615 blink_epoch: 0,
616 blinking_paused: false,
617 mode: EditorMode::Full,
618 vertical_scroll_margin: 3.0,
619 placeholder_text: None,
620 highlighted_rows: None,
621 highlighted_ranges: Default::default(),
622 nav_history: None,
623 completion_state: None,
624 completion_tasks: Default::default(),
625 next_completion_id: 0,
626 };
627 let selection = Selection {
628 id: post_inc(&mut this.next_selection_id),
629 start: 0,
630 end: 0,
631 reversed: false,
632 goal: SelectionGoal::None,
633 };
634 this.update_selections(vec![selection], None, cx);
635 this
636 }
637
638 pub fn open_new(
639 workspace: &mut Workspace,
640 _: &workspace::OpenNew,
641 cx: &mut ViewContext<Workspace>,
642 ) {
643 let buffer = cx
644 .add_model(|cx| Buffer::new(0, "", cx).with_language(language::PLAIN_TEXT.clone(), cx));
645 workspace.open_item(BufferItemHandle(buffer), cx);
646 }
647
648 pub fn replica_id(&self, cx: &AppContext) -> ReplicaId {
649 self.buffer.read(cx).replica_id()
650 }
651
652 pub fn buffer(&self) -> &ModelHandle<MultiBuffer> {
653 &self.buffer
654 }
655
656 pub fn title(&self, cx: &AppContext) -> String {
657 let filename = self
658 .buffer()
659 .read(cx)
660 .file(cx)
661 .map(|file| file.file_name(cx));
662 if let Some(name) = filename {
663 name.to_string_lossy().into()
664 } else {
665 "untitled".into()
666 }
667 }
668
669 pub fn snapshot(&mut self, cx: &mut MutableAppContext) -> EditorSnapshot {
670 EditorSnapshot {
671 mode: self.mode,
672 display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
673 scroll_position: self.scroll_position,
674 scroll_top_anchor: self.scroll_top_anchor.clone(),
675 placeholder_text: self.placeholder_text.clone(),
676 is_focused: self
677 .handle
678 .upgrade(cx)
679 .map_or(false, |handle| handle.is_focused(cx)),
680 }
681 }
682
683 pub fn language<'a>(&self, cx: &'a AppContext) -> Option<&'a Arc<Language>> {
684 self.buffer.read(cx).language(cx)
685 }
686
687 pub fn set_placeholder_text(
688 &mut self,
689 placeholder_text: impl Into<Arc<str>>,
690 cx: &mut ViewContext<Self>,
691 ) {
692 self.placeholder_text = Some(placeholder_text.into());
693 cx.notify();
694 }
695
696 pub fn set_vertical_scroll_margin(&mut self, margin_rows: usize, cx: &mut ViewContext<Self>) {
697 self.vertical_scroll_margin = margin_rows as f32;
698 cx.notify();
699 }
700
701 pub fn set_scroll_position(&mut self, scroll_position: Vector2F, cx: &mut ViewContext<Self>) {
702 let map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
703
704 if scroll_position.y() == 0. {
705 self.scroll_top_anchor = None;
706 self.scroll_position = scroll_position;
707 } else {
708 let scroll_top_buffer_offset =
709 DisplayPoint::new(scroll_position.y() as u32, 0).to_offset(&map, Bias::Right);
710 let anchor = map
711 .buffer_snapshot
712 .anchor_at(scroll_top_buffer_offset, Bias::Right);
713 self.scroll_position = vec2f(
714 scroll_position.x(),
715 scroll_position.y() - anchor.to_display_point(&map).row() as f32,
716 );
717 self.scroll_top_anchor = Some(anchor);
718 }
719
720 cx.notify();
721 }
722
723 pub fn scroll_position(&self, cx: &mut ViewContext<Self>) -> Vector2F {
724 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
725 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor)
726 }
727
728 pub fn clamp_scroll_left(&mut self, max: f32) -> bool {
729 if max < self.scroll_position.x() {
730 self.scroll_position.set_x(max);
731 true
732 } else {
733 false
734 }
735 }
736
737 pub fn autoscroll_vertically(
738 &mut self,
739 viewport_height: f32,
740 line_height: f32,
741 cx: &mut ViewContext<Self>,
742 ) -> bool {
743 let visible_lines = viewport_height / line_height;
744 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
745 let mut scroll_position =
746 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor);
747 let max_scroll_top = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
748 (display_map.max_point().row() as f32 - visible_lines + 1.).max(0.)
749 } else {
750 display_map.max_point().row().saturating_sub(1) as f32
751 };
752 if scroll_position.y() > max_scroll_top {
753 scroll_position.set_y(max_scroll_top);
754 self.set_scroll_position(scroll_position, cx);
755 }
756
757 let autoscroll = if let Some(autoscroll) = self.autoscroll_request.take() {
758 autoscroll
759 } else {
760 return false;
761 };
762
763 let first_cursor_top;
764 let last_cursor_bottom;
765 if let Some(highlighted_rows) = &self.highlighted_rows {
766 first_cursor_top = highlighted_rows.start as f32;
767 last_cursor_bottom = first_cursor_top + 1.;
768 } else if autoscroll == Autoscroll::Newest {
769 let newest_selection = self.newest_selection::<Point>(&display_map.buffer_snapshot);
770 first_cursor_top = newest_selection.head().to_display_point(&display_map).row() as f32;
771 last_cursor_bottom = first_cursor_top + 1.;
772 } else {
773 let selections = self.local_selections::<Point>(cx);
774 first_cursor_top = selections
775 .first()
776 .unwrap()
777 .head()
778 .to_display_point(&display_map)
779 .row() as f32;
780 last_cursor_bottom = selections
781 .last()
782 .unwrap()
783 .head()
784 .to_display_point(&display_map)
785 .row() as f32
786 + 1.0;
787 }
788
789 let margin = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
790 0.
791 } else {
792 ((visible_lines - (last_cursor_bottom - first_cursor_top)) / 2.0).floor()
793 };
794 if margin < 0.0 {
795 return false;
796 }
797
798 match autoscroll {
799 Autoscroll::Fit | Autoscroll::Newest => {
800 let margin = margin.min(self.vertical_scroll_margin);
801 let target_top = (first_cursor_top - margin).max(0.0);
802 let target_bottom = last_cursor_bottom + margin;
803 let start_row = scroll_position.y();
804 let end_row = start_row + visible_lines;
805
806 if target_top < start_row {
807 scroll_position.set_y(target_top);
808 self.set_scroll_position(scroll_position, cx);
809 } else if target_bottom >= end_row {
810 scroll_position.set_y(target_bottom - visible_lines);
811 self.set_scroll_position(scroll_position, cx);
812 }
813 }
814 Autoscroll::Center => {
815 scroll_position.set_y((first_cursor_top - margin).max(0.0));
816 self.set_scroll_position(scroll_position, cx);
817 }
818 }
819
820 true
821 }
822
823 pub fn autoscroll_horizontally(
824 &mut self,
825 start_row: u32,
826 viewport_width: f32,
827 scroll_width: f32,
828 max_glyph_width: f32,
829 layouts: &[text_layout::Line],
830 cx: &mut ViewContext<Self>,
831 ) -> bool {
832 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
833 let selections = self.local_selections::<Point>(cx);
834
835 let mut target_left;
836 let mut target_right;
837
838 if self.highlighted_rows.is_some() {
839 target_left = 0.0_f32;
840 target_right = 0.0_f32;
841 } else {
842 target_left = std::f32::INFINITY;
843 target_right = 0.0_f32;
844 for selection in selections {
845 let head = selection.head().to_display_point(&display_map);
846 if head.row() >= start_row && head.row() < start_row + layouts.len() as u32 {
847 let start_column = head.column().saturating_sub(3);
848 let end_column = cmp::min(display_map.line_len(head.row()), head.column() + 3);
849 target_left = target_left.min(
850 layouts[(head.row() - start_row) as usize]
851 .x_for_index(start_column as usize),
852 );
853 target_right = target_right.max(
854 layouts[(head.row() - start_row) as usize].x_for_index(end_column as usize)
855 + max_glyph_width,
856 );
857 }
858 }
859 }
860
861 target_right = target_right.min(scroll_width);
862
863 if target_right - target_left > viewport_width {
864 return false;
865 }
866
867 let scroll_left = self.scroll_position.x() * max_glyph_width;
868 let scroll_right = scroll_left + viewport_width;
869
870 if target_left < scroll_left {
871 self.scroll_position.set_x(target_left / max_glyph_width);
872 true
873 } else if target_right > scroll_right {
874 self.scroll_position
875 .set_x((target_right - viewport_width) / max_glyph_width);
876 true
877 } else {
878 false
879 }
880 }
881
882 fn select(&mut self, Select(phase): &Select, cx: &mut ViewContext<Self>) {
883 self.hide_completions(cx);
884
885 match phase {
886 SelectPhase::Begin {
887 position,
888 add,
889 click_count,
890 } => self.begin_selection(*position, *add, *click_count, cx),
891 SelectPhase::BeginColumnar {
892 position,
893 overshoot,
894 } => self.begin_columnar_selection(*position, *overshoot, cx),
895 SelectPhase::Extend {
896 position,
897 click_count,
898 } => self.extend_selection(*position, *click_count, cx),
899 SelectPhase::Update {
900 position,
901 overshoot,
902 scroll_position,
903 } => self.update_selection(*position, *overshoot, *scroll_position, cx),
904 SelectPhase::End => self.end_selection(cx),
905 }
906 }
907
908 fn extend_selection(
909 &mut self,
910 position: DisplayPoint,
911 click_count: usize,
912 cx: &mut ViewContext<Self>,
913 ) {
914 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
915 let tail = self
916 .newest_selection::<usize>(&display_map.buffer_snapshot)
917 .tail();
918 self.begin_selection(position, false, click_count, cx);
919
920 let position = position.to_offset(&display_map, Bias::Left);
921 let tail_anchor = display_map.buffer_snapshot.anchor_before(tail);
922 let pending = self.pending_selection.as_mut().unwrap();
923
924 if position >= tail {
925 pending.selection.start = tail_anchor.clone();
926 } else {
927 pending.selection.end = tail_anchor.clone();
928 pending.selection.reversed = true;
929 }
930
931 match &mut pending.mode {
932 SelectMode::Word(range) | SelectMode::Line(range) => {
933 *range = tail_anchor.clone()..tail_anchor
934 }
935 _ => {}
936 }
937 }
938
939 fn begin_selection(
940 &mut self,
941 position: DisplayPoint,
942 add: bool,
943 click_count: usize,
944 cx: &mut ViewContext<Self>,
945 ) {
946 if !self.focused {
947 cx.focus_self();
948 cx.emit(Event::Activate);
949 }
950
951 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
952 let buffer = &display_map.buffer_snapshot;
953 let newest_selection = self.newest_anchor_selection().unwrap().clone();
954
955 let start;
956 let end;
957 let mode;
958 match click_count {
959 1 => {
960 start = buffer.anchor_before(position.to_point(&display_map));
961 end = start.clone();
962 mode = SelectMode::Character;
963 }
964 2 => {
965 let range = movement::surrounding_word(&display_map, position);
966 start = buffer.anchor_before(range.start.to_point(&display_map));
967 end = buffer.anchor_before(range.end.to_point(&display_map));
968 mode = SelectMode::Word(start.clone()..end.clone());
969 }
970 3 => {
971 let position = display_map.clip_point(position, Bias::Left);
972 let line_start = movement::line_beginning(&display_map, position, false);
973 let mut next_line_start = line_start.clone();
974 *next_line_start.row_mut() += 1;
975 *next_line_start.column_mut() = 0;
976 next_line_start = display_map.clip_point(next_line_start, Bias::Right);
977
978 start = buffer.anchor_before(line_start.to_point(&display_map));
979 end = buffer.anchor_before(next_line_start.to_point(&display_map));
980 mode = SelectMode::Line(start.clone()..end.clone());
981 }
982 _ => {
983 start = buffer.anchor_before(0);
984 end = buffer.anchor_before(buffer.len());
985 mode = SelectMode::All;
986 }
987 }
988
989 self.push_to_nav_history(newest_selection.head(), Some(end.to_point(&buffer)), cx);
990
991 let selection = Selection {
992 id: post_inc(&mut self.next_selection_id),
993 start,
994 end,
995 reversed: false,
996 goal: SelectionGoal::None,
997 };
998
999 if !add {
1000 self.update_selections::<usize>(Vec::new(), None, cx);
1001 } else if click_count > 1 {
1002 // Remove the newest selection since it was only added as part of this multi-click.
1003 let mut selections = self.local_selections(cx);
1004 selections.retain(|selection| selection.id != newest_selection.id);
1005 self.update_selections::<usize>(selections, None, cx)
1006 }
1007
1008 self.pending_selection = Some(PendingSelection { selection, mode });
1009
1010 cx.notify();
1011 }
1012
1013 fn begin_columnar_selection(
1014 &mut self,
1015 position: DisplayPoint,
1016 overshoot: u32,
1017 cx: &mut ViewContext<Self>,
1018 ) {
1019 if !self.focused {
1020 cx.focus_self();
1021 cx.emit(Event::Activate);
1022 }
1023
1024 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1025 let tail = self
1026 .newest_selection::<Point>(&display_map.buffer_snapshot)
1027 .tail();
1028 self.columnar_selection_tail = Some(display_map.buffer_snapshot.anchor_before(tail));
1029
1030 self.select_columns(
1031 tail.to_display_point(&display_map),
1032 position,
1033 overshoot,
1034 &display_map,
1035 cx,
1036 );
1037 }
1038
1039 fn update_selection(
1040 &mut self,
1041 position: DisplayPoint,
1042 overshoot: u32,
1043 scroll_position: Vector2F,
1044 cx: &mut ViewContext<Self>,
1045 ) {
1046 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1047
1048 if let Some(tail) = self.columnar_selection_tail.as_ref() {
1049 let tail = tail.to_display_point(&display_map);
1050 self.select_columns(tail, position, overshoot, &display_map, cx);
1051 } else if let Some(PendingSelection { selection, mode }) = self.pending_selection.as_mut() {
1052 let buffer = self.buffer.read(cx).snapshot(cx);
1053 let head;
1054 let tail;
1055 match mode {
1056 SelectMode::Character => {
1057 head = position.to_point(&display_map);
1058 tail = selection.tail().to_point(&buffer);
1059 }
1060 SelectMode::Word(original_range) => {
1061 let original_display_range = original_range.start.to_display_point(&display_map)
1062 ..original_range.end.to_display_point(&display_map);
1063 let original_buffer_range = original_display_range.start.to_point(&display_map)
1064 ..original_display_range.end.to_point(&display_map);
1065 if movement::is_inside_word(&display_map, position)
1066 || original_display_range.contains(&position)
1067 {
1068 let word_range = movement::surrounding_word(&display_map, position);
1069 if word_range.start < original_display_range.start {
1070 head = word_range.start.to_point(&display_map);
1071 } else {
1072 head = word_range.end.to_point(&display_map);
1073 }
1074 } else {
1075 head = position.to_point(&display_map);
1076 }
1077
1078 if head <= original_buffer_range.start {
1079 tail = original_buffer_range.end;
1080 } else {
1081 tail = original_buffer_range.start;
1082 }
1083 }
1084 SelectMode::Line(original_range) => {
1085 let original_display_range = original_range.start.to_display_point(&display_map)
1086 ..original_range.end.to_display_point(&display_map);
1087 let original_buffer_range = original_display_range.start.to_point(&display_map)
1088 ..original_display_range.end.to_point(&display_map);
1089 let line_start = movement::line_beginning(&display_map, position, false);
1090 let mut next_line_start = line_start.clone();
1091 *next_line_start.row_mut() += 1;
1092 *next_line_start.column_mut() = 0;
1093 next_line_start = display_map.clip_point(next_line_start, Bias::Right);
1094
1095 if line_start < original_display_range.start {
1096 head = line_start.to_point(&display_map);
1097 } else {
1098 head = next_line_start.to_point(&display_map);
1099 }
1100
1101 if head <= original_buffer_range.start {
1102 tail = original_buffer_range.end;
1103 } else {
1104 tail = original_buffer_range.start;
1105 }
1106 }
1107 SelectMode::All => {
1108 return;
1109 }
1110 };
1111
1112 if head < tail {
1113 selection.start = buffer.anchor_before(head);
1114 selection.end = buffer.anchor_before(tail);
1115 selection.reversed = true;
1116 } else {
1117 selection.start = buffer.anchor_before(tail);
1118 selection.end = buffer.anchor_before(head);
1119 selection.reversed = false;
1120 }
1121 } else {
1122 log::error!("update_selection dispatched with no pending selection");
1123 return;
1124 }
1125
1126 self.set_scroll_position(scroll_position, cx);
1127 cx.notify();
1128 }
1129
1130 fn end_selection(&mut self, cx: &mut ViewContext<Self>) {
1131 self.columnar_selection_tail.take();
1132 if self.pending_selection.is_some() {
1133 let selections = self.local_selections::<usize>(cx);
1134 self.update_selections(selections, None, cx);
1135 }
1136 }
1137
1138 fn select_columns(
1139 &mut self,
1140 tail: DisplayPoint,
1141 head: DisplayPoint,
1142 overshoot: u32,
1143 display_map: &DisplaySnapshot,
1144 cx: &mut ViewContext<Self>,
1145 ) {
1146 let start_row = cmp::min(tail.row(), head.row());
1147 let end_row = cmp::max(tail.row(), head.row());
1148 let start_column = cmp::min(tail.column(), head.column() + overshoot);
1149 let end_column = cmp::max(tail.column(), head.column() + overshoot);
1150 let reversed = start_column < tail.column();
1151
1152 let selections = (start_row..=end_row)
1153 .filter_map(|row| {
1154 if start_column <= display_map.line_len(row) && !display_map.is_block_line(row) {
1155 let start = display_map
1156 .clip_point(DisplayPoint::new(row, start_column), Bias::Left)
1157 .to_point(&display_map);
1158 let end = display_map
1159 .clip_point(DisplayPoint::new(row, end_column), Bias::Right)
1160 .to_point(&display_map);
1161 Some(Selection {
1162 id: post_inc(&mut self.next_selection_id),
1163 start,
1164 end,
1165 reversed,
1166 goal: SelectionGoal::None,
1167 })
1168 } else {
1169 None
1170 }
1171 })
1172 .collect::<Vec<_>>();
1173
1174 self.update_selections(selections, None, cx);
1175 cx.notify();
1176 }
1177
1178 pub fn is_selecting(&self) -> bool {
1179 self.pending_selection.is_some() || self.columnar_selection_tail.is_some()
1180 }
1181
1182 pub fn cancel(&mut self, _: &Cancel, cx: &mut ViewContext<Self>) {
1183 if self.hide_completions(cx).is_some() {
1184 return;
1185 }
1186
1187 if self.snippet_stack.pop().is_some() {
1188 return;
1189 }
1190
1191 if self.mode != EditorMode::Full {
1192 cx.propagate_action();
1193 return;
1194 }
1195
1196 if self.active_diagnostics.is_some() {
1197 self.dismiss_diagnostics(cx);
1198 } else if let Some(PendingSelection { selection, .. }) = self.pending_selection.take() {
1199 let buffer = self.buffer.read(cx).snapshot(cx);
1200 let selection = Selection {
1201 id: selection.id,
1202 start: selection.start.to_point(&buffer),
1203 end: selection.end.to_point(&buffer),
1204 reversed: selection.reversed,
1205 goal: selection.goal,
1206 };
1207 if self.local_selections::<Point>(cx).is_empty() {
1208 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
1209 }
1210 } else {
1211 let buffer = self.buffer.read(cx).snapshot(cx);
1212 let mut oldest_selection = self.oldest_selection::<usize>(&buffer);
1213 if self.selection_count() == 1 {
1214 if oldest_selection.is_empty() {
1215 cx.propagate_action();
1216 return;
1217 }
1218
1219 oldest_selection.start = oldest_selection.head().clone();
1220 oldest_selection.end = oldest_selection.head().clone();
1221 }
1222 self.update_selections(vec![oldest_selection], Some(Autoscroll::Fit), cx);
1223 }
1224 }
1225
1226 #[cfg(any(test, feature = "test-support"))]
1227 pub fn selected_ranges<D: TextDimension + Ord + Sub<D, Output = D>>(
1228 &self,
1229 cx: &mut MutableAppContext,
1230 ) -> Vec<Range<D>> {
1231 self.local_selections::<D>(cx)
1232 .iter()
1233 .map(|s| {
1234 if s.reversed {
1235 s.end.clone()..s.start.clone()
1236 } else {
1237 s.start.clone()..s.end.clone()
1238 }
1239 })
1240 .collect()
1241 }
1242
1243 #[cfg(any(test, feature = "test-support"))]
1244 pub fn selected_display_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
1245 let display_map = self
1246 .display_map
1247 .update(cx, |display_map, cx| display_map.snapshot(cx));
1248 self.selections
1249 .iter()
1250 .chain(
1251 self.pending_selection
1252 .as_ref()
1253 .map(|pending| &pending.selection),
1254 )
1255 .map(|s| {
1256 if s.reversed {
1257 s.end.to_display_point(&display_map)..s.start.to_display_point(&display_map)
1258 } else {
1259 s.start.to_display_point(&display_map)..s.end.to_display_point(&display_map)
1260 }
1261 })
1262 .collect()
1263 }
1264
1265 pub fn select_ranges<I, T>(
1266 &mut self,
1267 ranges: I,
1268 autoscroll: Option<Autoscroll>,
1269 cx: &mut ViewContext<Self>,
1270 ) where
1271 I: IntoIterator<Item = Range<T>>,
1272 T: ToOffset,
1273 {
1274 let buffer = self.buffer.read(cx).snapshot(cx);
1275 let selections = ranges
1276 .into_iter()
1277 .map(|range| {
1278 let mut start = range.start.to_offset(&buffer);
1279 let mut end = range.end.to_offset(&buffer);
1280 let reversed = if start > end {
1281 mem::swap(&mut start, &mut end);
1282 true
1283 } else {
1284 false
1285 };
1286 Selection {
1287 id: post_inc(&mut self.next_selection_id),
1288 start,
1289 end,
1290 reversed,
1291 goal: SelectionGoal::None,
1292 }
1293 })
1294 .collect::<Vec<_>>();
1295 self.update_selections(selections, autoscroll, cx);
1296 }
1297
1298 #[cfg(any(test, feature = "test-support"))]
1299 pub fn select_display_ranges<'a, T>(&mut self, ranges: T, cx: &mut ViewContext<Self>)
1300 where
1301 T: IntoIterator<Item = &'a Range<DisplayPoint>>,
1302 {
1303 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1304 let selections = ranges
1305 .into_iter()
1306 .map(|range| {
1307 let mut start = range.start;
1308 let mut end = range.end;
1309 let reversed = if start > end {
1310 mem::swap(&mut start, &mut end);
1311 true
1312 } else {
1313 false
1314 };
1315 Selection {
1316 id: post_inc(&mut self.next_selection_id),
1317 start: start.to_point(&display_map),
1318 end: end.to_point(&display_map),
1319 reversed,
1320 goal: SelectionGoal::None,
1321 }
1322 })
1323 .collect();
1324 self.update_selections(selections, None, cx);
1325 }
1326
1327 pub fn handle_input(&mut self, action: &Input, cx: &mut ViewContext<Self>) {
1328 let text = action.0.as_ref();
1329 if !self.skip_autoclose_end(text, cx) {
1330 self.start_transaction(cx);
1331 self.insert(text, cx);
1332 self.autoclose_pairs(cx);
1333 self.end_transaction(cx);
1334 self.trigger_completion_on_input(text, cx);
1335 }
1336 }
1337
1338 pub fn newline(&mut self, _: &Newline, cx: &mut ViewContext<Self>) {
1339 self.start_transaction(cx);
1340 let mut old_selections = SmallVec::<[_; 32]>::new();
1341 {
1342 let selections = self.local_selections::<Point>(cx);
1343 let buffer = self.buffer.read(cx).snapshot(cx);
1344 for selection in selections.iter() {
1345 let start_point = selection.start;
1346 let indent = buffer
1347 .indent_column_for_line(start_point.row)
1348 .min(start_point.column);
1349 let start = selection.start.to_offset(&buffer);
1350 let end = selection.end.to_offset(&buffer);
1351
1352 let mut insert_extra_newline = false;
1353 if let Some(language) = buffer.language() {
1354 let leading_whitespace_len = buffer
1355 .reversed_chars_at(start)
1356 .take_while(|c| c.is_whitespace() && *c != '\n')
1357 .map(|c| c.len_utf8())
1358 .sum::<usize>();
1359
1360 let trailing_whitespace_len = buffer
1361 .chars_at(end)
1362 .take_while(|c| c.is_whitespace() && *c != '\n')
1363 .map(|c| c.len_utf8())
1364 .sum::<usize>();
1365
1366 insert_extra_newline = language.brackets().iter().any(|pair| {
1367 let pair_start = pair.start.trim_end();
1368 let pair_end = pair.end.trim_start();
1369
1370 pair.newline
1371 && buffer.contains_str_at(end + trailing_whitespace_len, pair_end)
1372 && buffer.contains_str_at(
1373 (start - leading_whitespace_len).saturating_sub(pair_start.len()),
1374 pair_start,
1375 )
1376 });
1377 }
1378
1379 old_selections.push((selection.id, start..end, indent, insert_extra_newline));
1380 }
1381 }
1382
1383 self.buffer.update(cx, |buffer, cx| {
1384 let mut delta = 0_isize;
1385 let mut pending_edit: Option<PendingEdit> = None;
1386 for (_, range, indent, insert_extra_newline) in &old_selections {
1387 if pending_edit.as_ref().map_or(false, |pending| {
1388 pending.indent != *indent
1389 || pending.insert_extra_newline != *insert_extra_newline
1390 }) {
1391 let pending = pending_edit.take().unwrap();
1392 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1393 new_text.push('\n');
1394 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1395 if pending.insert_extra_newline {
1396 new_text = new_text.repeat(2);
1397 }
1398 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1399 delta += pending.delta;
1400 }
1401
1402 let start = (range.start as isize + delta) as usize;
1403 let end = (range.end as isize + delta) as usize;
1404 let mut text_len = *indent as usize + 1;
1405 if *insert_extra_newline {
1406 text_len *= 2;
1407 }
1408
1409 let pending = pending_edit.get_or_insert_with(Default::default);
1410 pending.delta += text_len as isize - (end - start) as isize;
1411 pending.indent = *indent;
1412 pending.insert_extra_newline = *insert_extra_newline;
1413 pending.ranges.push(start..end);
1414 }
1415
1416 let pending = pending_edit.unwrap();
1417 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1418 new_text.push('\n');
1419 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1420 if pending.insert_extra_newline {
1421 new_text = new_text.repeat(2);
1422 }
1423 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1424
1425 let buffer = buffer.read(cx);
1426 self.selections = self
1427 .selections
1428 .iter()
1429 .cloned()
1430 .zip(old_selections)
1431 .map(|(mut new_selection, (_, _, _, insert_extra_newline))| {
1432 if insert_extra_newline {
1433 let mut cursor = new_selection.start.to_point(&buffer);
1434 cursor.row -= 1;
1435 cursor.column = buffer.line_len(cursor.row);
1436 let anchor = buffer.anchor_after(cursor);
1437 new_selection.start = anchor.clone();
1438 new_selection.end = anchor;
1439 }
1440 new_selection
1441 })
1442 .collect();
1443 });
1444
1445 self.request_autoscroll(Autoscroll::Fit, cx);
1446 self.end_transaction(cx);
1447
1448 #[derive(Default)]
1449 struct PendingEdit {
1450 indent: u32,
1451 insert_extra_newline: bool,
1452 delta: isize,
1453 ranges: SmallVec<[Range<usize>; 32]>,
1454 }
1455 }
1456
1457 pub fn insert(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1458 self.start_transaction(cx);
1459 let old_selections = self.local_selections::<usize>(cx);
1460 self.buffer.update(cx, |buffer, cx| {
1461 let edit_ranges = old_selections.iter().map(|s| s.start..s.end);
1462 buffer.edit_with_autoindent(edit_ranges, text, cx);
1463 });
1464
1465 let selections = self.local_selections::<usize>(cx);
1466 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1467 self.end_transaction(cx);
1468 }
1469
1470 fn trigger_completion_on_input(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1471 if let Some(selection) = self.newest_anchor_selection() {
1472 if self
1473 .buffer
1474 .read(cx)
1475 .is_completion_trigger(selection.head(), text, cx)
1476 {
1477 self.show_completions(&ShowCompletions, cx);
1478 } else {
1479 self.hide_completions(cx);
1480 }
1481 }
1482 }
1483
1484 fn autoclose_pairs(&mut self, cx: &mut ViewContext<Self>) {
1485 let selections = self.local_selections::<usize>(cx);
1486 let mut bracket_pair_state = None;
1487 let mut new_selections = None;
1488 self.buffer.update(cx, |buffer, cx| {
1489 let mut snapshot = buffer.snapshot(cx);
1490 let left_biased_selections = selections
1491 .iter()
1492 .map(|selection| Selection {
1493 id: selection.id,
1494 start: snapshot.anchor_before(selection.start),
1495 end: snapshot.anchor_before(selection.end),
1496 reversed: selection.reversed,
1497 goal: selection.goal,
1498 })
1499 .collect::<Vec<_>>();
1500
1501 let autoclose_pair = snapshot.language().and_then(|language| {
1502 let first_selection_start = selections.first().unwrap().start;
1503 let pair = language.brackets().iter().find(|pair| {
1504 snapshot.contains_str_at(
1505 first_selection_start.saturating_sub(pair.start.len()),
1506 &pair.start,
1507 )
1508 });
1509 pair.and_then(|pair| {
1510 let should_autoclose = selections[1..].iter().all(|selection| {
1511 snapshot.contains_str_at(
1512 selection.start.saturating_sub(pair.start.len()),
1513 &pair.start,
1514 )
1515 });
1516
1517 if should_autoclose {
1518 Some(pair.clone())
1519 } else {
1520 None
1521 }
1522 })
1523 });
1524
1525 if let Some(pair) = autoclose_pair {
1526 let selection_ranges = selections
1527 .iter()
1528 .map(|selection| {
1529 let start = selection.start.to_offset(&snapshot);
1530 start..start
1531 })
1532 .collect::<SmallVec<[_; 32]>>();
1533
1534 buffer.edit(selection_ranges, &pair.end, cx);
1535 snapshot = buffer.snapshot(cx);
1536
1537 new_selections = Some(
1538 self.resolve_selections::<usize, _>(left_biased_selections.iter(), &snapshot)
1539 .collect::<Vec<_>>(),
1540 );
1541
1542 if pair.end.len() == 1 {
1543 let mut delta = 0;
1544 bracket_pair_state = Some(BracketPairState {
1545 ranges: selections
1546 .iter()
1547 .map(move |selection| {
1548 let offset = selection.start + delta;
1549 delta += 1;
1550 snapshot.anchor_before(offset)..snapshot.anchor_after(offset)
1551 })
1552 .collect(),
1553 pair,
1554 });
1555 }
1556 }
1557 });
1558
1559 if let Some(new_selections) = new_selections {
1560 self.update_selections(new_selections, None, cx);
1561 }
1562 if let Some(bracket_pair_state) = bracket_pair_state {
1563 self.autoclose_stack.push(bracket_pair_state);
1564 }
1565 }
1566
1567 fn skip_autoclose_end(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
1568 let old_selections = self.local_selections::<usize>(cx);
1569 let autoclose_pair = if let Some(autoclose_pair) = self.autoclose_stack.last() {
1570 autoclose_pair
1571 } else {
1572 return false;
1573 };
1574 if text != autoclose_pair.pair.end {
1575 return false;
1576 }
1577
1578 debug_assert_eq!(old_selections.len(), autoclose_pair.ranges.len());
1579
1580 let buffer = self.buffer.read(cx).snapshot(cx);
1581 if old_selections
1582 .iter()
1583 .zip(autoclose_pair.ranges.iter().map(|r| r.to_offset(&buffer)))
1584 .all(|(selection, autoclose_range)| {
1585 let autoclose_range_end = autoclose_range.end.to_offset(&buffer);
1586 selection.is_empty() && selection.start == autoclose_range_end
1587 })
1588 {
1589 let new_selections = old_selections
1590 .into_iter()
1591 .map(|selection| {
1592 let cursor = selection.start + 1;
1593 Selection {
1594 id: selection.id,
1595 start: cursor,
1596 end: cursor,
1597 reversed: false,
1598 goal: SelectionGoal::None,
1599 }
1600 })
1601 .collect();
1602 self.autoclose_stack.pop();
1603 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1604 true
1605 } else {
1606 false
1607 }
1608 }
1609
1610 fn completion_query(buffer: &MultiBufferSnapshot, position: impl ToOffset) -> Option<String> {
1611 let offset = position.to_offset(buffer);
1612 let (word_range, kind) = buffer.surrounding_word(offset);
1613 if offset > word_range.start && kind == Some(CharKind::Word) {
1614 Some(
1615 buffer
1616 .text_for_range(word_range.start..offset)
1617 .collect::<String>(),
1618 )
1619 } else {
1620 None
1621 }
1622 }
1623
1624 fn show_completions(&mut self, _: &ShowCompletions, cx: &mut ViewContext<Self>) {
1625 let position = if let Some(selection) = self.newest_anchor_selection() {
1626 selection.head()
1627 } else {
1628 return;
1629 };
1630
1631 let query = Self::completion_query(&self.buffer.read(cx).read(cx), position.clone());
1632 let completions = self
1633 .buffer
1634 .update(cx, |buffer, cx| buffer.completions(position.clone(), cx));
1635
1636 let id = post_inc(&mut self.next_completion_id);
1637 let task = cx.spawn_weak(|this, mut cx| {
1638 async move {
1639 let completions = completions.await?;
1640
1641 let mut completion_state = CompletionState {
1642 id,
1643 initial_position: position,
1644 match_candidates: completions
1645 .iter()
1646 .enumerate()
1647 .map(|(id, completion)| {
1648 StringMatchCandidate::new(
1649 id,
1650 completion.label.text[completion.label.filter_range.clone()].into(),
1651 )
1652 })
1653 .collect(),
1654 completions: completions.into(),
1655 matches: Vec::new().into(),
1656 selected_item: 0,
1657 list: Default::default(),
1658 };
1659
1660 completion_state
1661 .filter(query.as_deref(), cx.background())
1662 .await;
1663
1664 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
1665 this.update(&mut cx, |this, cx| {
1666 if let Some(prev_completion_state) = this.completion_state.as_ref() {
1667 if prev_completion_state.id > completion_state.id {
1668 return;
1669 }
1670 }
1671
1672 this.completion_tasks
1673 .retain(|(id, _)| *id > completion_state.id);
1674 if completion_state.matches.is_empty() {
1675 this.hide_completions(cx);
1676 } else if this.focused {
1677 this.completion_state = Some(completion_state);
1678 }
1679
1680 cx.notify();
1681 });
1682 }
1683 Ok::<_, anyhow::Error>(())
1684 }
1685 .log_err()
1686 });
1687 self.completion_tasks.push((id, task));
1688 }
1689
1690 fn hide_completions(&mut self, cx: &mut ViewContext<Self>) -> Option<CompletionState> {
1691 cx.notify();
1692 self.completion_tasks.clear();
1693 self.completion_state.take()
1694 }
1695
1696 pub fn confirm_completion(
1697 &mut self,
1698 completion_ix: Option<usize>,
1699 cx: &mut ViewContext<Self>,
1700 ) -> Option<Task<Result<()>>> {
1701 let completion_state = self.hide_completions(cx)?;
1702 let mat = completion_state
1703 .matches
1704 .get(completion_ix.unwrap_or(completion_state.selected_item))?;
1705 let completion = completion_state.completions.get(mat.candidate_id)?;
1706
1707 let snippet;
1708 let text;
1709 if completion.is_snippet() {
1710 snippet = Some(Snippet::parse(&completion.new_text).log_err()?);
1711 text = snippet.as_ref().unwrap().text.clone();
1712 } else {
1713 snippet = None;
1714 text = completion.new_text.clone();
1715 };
1716 let snapshot = self.buffer.read(cx).snapshot(cx);
1717 let old_range = completion.old_range.to_offset(&snapshot);
1718 let old_text = snapshot
1719 .text_for_range(old_range.clone())
1720 .collect::<String>();
1721
1722 let selections = self.local_selections::<usize>(cx);
1723 let newest_selection = selections.iter().max_by_key(|s| s.id)?;
1724 let lookbehind = newest_selection.start.saturating_sub(old_range.start);
1725 let lookahead = old_range.end.saturating_sub(newest_selection.end);
1726 let mut common_prefix_len = old_text
1727 .bytes()
1728 .zip(text.bytes())
1729 .take_while(|(a, b)| a == b)
1730 .count();
1731
1732 let mut ranges = Vec::new();
1733 for selection in &selections {
1734 if snapshot.contains_str_at(selection.start.saturating_sub(lookbehind), &old_text) {
1735 let start = selection.start.saturating_sub(lookbehind);
1736 let end = selection.end + lookahead;
1737 ranges.push(start + common_prefix_len..end);
1738 } else {
1739 common_prefix_len = 0;
1740 ranges.clear();
1741 ranges.extend(selections.iter().map(|s| {
1742 if s.id == newest_selection.id {
1743 old_range.clone()
1744 } else {
1745 s.start..s.end
1746 }
1747 }));
1748 break;
1749 }
1750 }
1751 let text = &text[common_prefix_len..];
1752
1753 self.start_transaction(cx);
1754 if let Some(mut snippet) = snippet {
1755 snippet.text = text.to_string();
1756 for tabstop in snippet.tabstops.iter_mut().flatten() {
1757 tabstop.start -= common_prefix_len as isize;
1758 tabstop.end -= common_prefix_len as isize;
1759 }
1760
1761 self.insert_snippet(&ranges, snippet, cx).log_err();
1762 } else {
1763 self.buffer.update(cx, |buffer, cx| {
1764 buffer.edit_with_autoindent(ranges, text, cx);
1765 });
1766 }
1767 self.end_transaction(cx);
1768
1769 Some(self.buffer.update(cx, |buffer, cx| {
1770 buffer.apply_additional_edits_for_completion(completion.clone(), cx)
1771 }))
1772 }
1773
1774 pub fn has_completions(&self) -> bool {
1775 self.completion_state
1776 .as_ref()
1777 .map_or(false, |c| !c.matches.is_empty())
1778 }
1779
1780 pub fn render_completions(&self, cx: &AppContext) -> Option<ElementBox> {
1781 enum CompletionTag {}
1782
1783 self.completion_state.as_ref().map(|state| {
1784 let build_settings = self.build_settings.clone();
1785 let settings = build_settings(cx);
1786 let completions = state.completions.clone();
1787 let matches = state.matches.clone();
1788 let selected_item = state.selected_item;
1789 UniformList::new(
1790 state.list.clone(),
1791 matches.len(),
1792 move |range, items, cx| {
1793 let settings = build_settings(cx);
1794 let start_ix = range.start;
1795 for (ix, mat) in matches[range].iter().enumerate() {
1796 let completion = &completions[mat.candidate_id];
1797 let item_ix = start_ix + ix;
1798 items.push(
1799 MouseEventHandler::new::<CompletionTag, _, _, _>(
1800 mat.candidate_id,
1801 cx,
1802 |state, _| {
1803 let item_style = if item_ix == selected_item {
1804 settings.style.autocomplete.selected_item
1805 } else if state.hovered {
1806 settings.style.autocomplete.hovered_item
1807 } else {
1808 settings.style.autocomplete.item
1809 };
1810
1811 Text::new(
1812 completion.label.text.clone(),
1813 settings.style.text.clone(),
1814 )
1815 .with_soft_wrap(false)
1816 .with_highlights(combine_syntax_and_fuzzy_match_highlights(
1817 &completion.label.text,
1818 settings.style.text.color.into(),
1819 styled_runs_for_completion_label(
1820 &completion.label,
1821 settings.style.text.color,
1822 &settings.style.syntax,
1823 ),
1824 &mat.positions,
1825 ))
1826 .contained()
1827 .with_style(item_style)
1828 .boxed()
1829 },
1830 )
1831 .with_cursor_style(CursorStyle::PointingHand)
1832 .on_mouse_down(move |cx| {
1833 cx.dispatch_action(ConfirmCompletion(Some(item_ix)));
1834 })
1835 .boxed(),
1836 );
1837 }
1838 },
1839 )
1840 .with_width_from_item(
1841 state
1842 .matches
1843 .iter()
1844 .enumerate()
1845 .max_by_key(|(_, mat)| {
1846 state.completions[mat.candidate_id]
1847 .label
1848 .text
1849 .chars()
1850 .count()
1851 })
1852 .map(|(ix, _)| ix),
1853 )
1854 .contained()
1855 .with_style(settings.style.autocomplete.container)
1856 .boxed()
1857 })
1858 }
1859
1860 pub fn insert_snippet(
1861 &mut self,
1862 insertion_ranges: &[Range<usize>],
1863 snippet: Snippet,
1864 cx: &mut ViewContext<Self>,
1865 ) -> Result<()> {
1866 let tabstops = self.buffer.update(cx, |buffer, cx| {
1867 buffer.edit_with_autoindent(insertion_ranges.iter().cloned(), &snippet.text, cx);
1868
1869 let snapshot = &*buffer.read(cx);
1870 let snippet = &snippet;
1871 snippet
1872 .tabstops
1873 .iter()
1874 .map(|tabstop| {
1875 let mut tabstop_ranges = tabstop
1876 .iter()
1877 .flat_map(|tabstop_range| {
1878 let mut delta = 0 as isize;
1879 insertion_ranges.iter().map(move |insertion_range| {
1880 let insertion_start = insertion_range.start as isize + delta;
1881 delta +=
1882 snippet.text.len() as isize - insertion_range.len() as isize;
1883
1884 let start = snapshot.anchor_before(
1885 (insertion_start + tabstop_range.start) as usize,
1886 );
1887 let end = snapshot
1888 .anchor_after((insertion_start + tabstop_range.end) as usize);
1889 start..end
1890 })
1891 })
1892 .collect::<Vec<_>>();
1893 tabstop_ranges
1894 .sort_unstable_by(|a, b| a.start.cmp(&b.start, snapshot).unwrap());
1895 tabstop_ranges
1896 })
1897 .collect::<Vec<_>>()
1898 });
1899
1900 if let Some(tabstop) = tabstops.first() {
1901 self.select_ranges(tabstop.iter().cloned(), Some(Autoscroll::Fit), cx);
1902 self.snippet_stack.push(SnippetState {
1903 active_index: 0,
1904 ranges: tabstops,
1905 });
1906 }
1907
1908 Ok(())
1909 }
1910
1911 pub fn move_to_next_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) -> bool {
1912 self.move_to_snippet_tabstop(Bias::Right, cx)
1913 }
1914
1915 pub fn move_to_prev_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) {
1916 self.move_to_snippet_tabstop(Bias::Left, cx);
1917 }
1918
1919 pub fn move_to_snippet_tabstop(&mut self, bias: Bias, cx: &mut ViewContext<Self>) -> bool {
1920 let buffer = self.buffer.read(cx).snapshot(cx);
1921
1922 if let Some(snippet) = self.snippet_stack.last_mut() {
1923 match bias {
1924 Bias::Left => {
1925 if snippet.active_index > 0 {
1926 snippet.active_index -= 1;
1927 } else {
1928 return false;
1929 }
1930 }
1931 Bias::Right => {
1932 if snippet.active_index + 1 < snippet.ranges.len() {
1933 snippet.active_index += 1;
1934 } else {
1935 return false;
1936 }
1937 }
1938 }
1939 if let Some(current_ranges) = snippet.ranges.get(snippet.active_index) {
1940 let new_selections = current_ranges
1941 .iter()
1942 .map(|new_range| {
1943 let new_range = new_range.to_offset(&buffer);
1944 Selection {
1945 id: post_inc(&mut self.next_selection_id),
1946 start: new_range.start,
1947 end: new_range.end,
1948 reversed: false,
1949 goal: SelectionGoal::None,
1950 }
1951 })
1952 .collect();
1953
1954 // Remove the snippet state when moving to the last tabstop.
1955 if snippet.active_index + 1 == snippet.ranges.len() {
1956 self.snippet_stack.pop();
1957 }
1958
1959 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1960 return true;
1961 }
1962 self.snippet_stack.pop();
1963 }
1964
1965 false
1966 }
1967
1968 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
1969 self.start_transaction(cx);
1970 self.select_all(&SelectAll, cx);
1971 self.insert("", cx);
1972 self.end_transaction(cx);
1973 }
1974
1975 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
1976 self.start_transaction(cx);
1977 let mut selections = self.local_selections::<Point>(cx);
1978 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1979 for selection in &mut selections {
1980 if selection.is_empty() {
1981 let head = selection.head().to_display_point(&display_map);
1982 let cursor = movement::left(&display_map, head)
1983 .unwrap()
1984 .to_point(&display_map);
1985 selection.set_head(cursor);
1986 selection.goal = SelectionGoal::None;
1987 }
1988 }
1989 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1990 self.insert("", cx);
1991 self.end_transaction(cx);
1992 }
1993
1994 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
1995 self.start_transaction(cx);
1996 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1997 let mut selections = self.local_selections::<Point>(cx);
1998 for selection in &mut selections {
1999 if selection.is_empty() {
2000 let head = selection.head().to_display_point(&display_map);
2001 let cursor = movement::right(&display_map, head)
2002 .unwrap()
2003 .to_point(&display_map);
2004 selection.set_head(cursor);
2005 selection.goal = SelectionGoal::None;
2006 }
2007 }
2008 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2009 self.insert(&"", cx);
2010 self.end_transaction(cx);
2011 }
2012
2013 pub fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
2014 if self.move_to_next_snippet_tabstop(cx) {
2015 return;
2016 }
2017
2018 self.start_transaction(cx);
2019 let tab_size = (self.build_settings)(cx).tab_size;
2020 let mut selections = self.local_selections::<Point>(cx);
2021 let mut last_indent = None;
2022 self.buffer.update(cx, |buffer, cx| {
2023 for selection in &mut selections {
2024 if selection.is_empty() {
2025 let char_column = buffer
2026 .read(cx)
2027 .text_for_range(Point::new(selection.start.row, 0)..selection.start)
2028 .flat_map(str::chars)
2029 .count();
2030 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
2031 buffer.edit(
2032 [selection.start..selection.start],
2033 " ".repeat(chars_to_next_tab_stop),
2034 cx,
2035 );
2036 selection.start.column += chars_to_next_tab_stop as u32;
2037 selection.end = selection.start;
2038 } else {
2039 let mut start_row = selection.start.row;
2040 let mut end_row = selection.end.row + 1;
2041
2042 // If a selection ends at the beginning of a line, don't indent
2043 // that last line.
2044 if selection.end.column == 0 {
2045 end_row -= 1;
2046 }
2047
2048 // Avoid re-indenting a row that has already been indented by a
2049 // previous selection, but still update this selection's column
2050 // to reflect that indentation.
2051 if let Some((last_indent_row, last_indent_len)) = last_indent {
2052 if last_indent_row == selection.start.row {
2053 selection.start.column += last_indent_len;
2054 start_row += 1;
2055 }
2056 if last_indent_row == selection.end.row {
2057 selection.end.column += last_indent_len;
2058 }
2059 }
2060
2061 for row in start_row..end_row {
2062 let indent_column = buffer.read(cx).indent_column_for_line(row) as usize;
2063 let columns_to_next_tab_stop = tab_size - (indent_column % tab_size);
2064 let row_start = Point::new(row, 0);
2065 buffer.edit(
2066 [row_start..row_start],
2067 " ".repeat(columns_to_next_tab_stop),
2068 cx,
2069 );
2070
2071 // Update this selection's endpoints to reflect the indentation.
2072 if row == selection.start.row {
2073 selection.start.column += columns_to_next_tab_stop as u32;
2074 }
2075 if row == selection.end.row {
2076 selection.end.column += columns_to_next_tab_stop as u32;
2077 }
2078
2079 last_indent = Some((row, columns_to_next_tab_stop as u32));
2080 }
2081 }
2082 }
2083 });
2084
2085 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2086 self.end_transaction(cx);
2087 }
2088
2089 pub fn outdent(&mut self, _: &Outdent, cx: &mut ViewContext<Self>) {
2090 if !self.snippet_stack.is_empty() {
2091 self.move_to_prev_snippet_tabstop(cx);
2092 return;
2093 }
2094
2095 self.start_transaction(cx);
2096 let tab_size = (self.build_settings)(cx).tab_size;
2097 let selections = self.local_selections::<Point>(cx);
2098 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2099 let mut deletion_ranges = Vec::new();
2100 let mut last_outdent = None;
2101 {
2102 let buffer = self.buffer.read(cx).read(cx);
2103 for selection in &selections {
2104 let mut rows = selection.spanned_rows(false, &display_map);
2105
2106 // Avoid re-outdenting a row that has already been outdented by a
2107 // previous selection.
2108 if let Some(last_row) = last_outdent {
2109 if last_row == rows.start {
2110 rows.start += 1;
2111 }
2112 }
2113
2114 for row in rows {
2115 let column = buffer.indent_column_for_line(row) as usize;
2116 if column > 0 {
2117 let mut deletion_len = (column % tab_size) as u32;
2118 if deletion_len == 0 {
2119 deletion_len = tab_size as u32;
2120 }
2121 deletion_ranges.push(Point::new(row, 0)..Point::new(row, deletion_len));
2122 last_outdent = Some(row);
2123 }
2124 }
2125 }
2126 }
2127 self.buffer.update(cx, |buffer, cx| {
2128 buffer.edit(deletion_ranges, "", cx);
2129 });
2130
2131 self.update_selections(
2132 self.local_selections::<usize>(cx),
2133 Some(Autoscroll::Fit),
2134 cx,
2135 );
2136 self.end_transaction(cx);
2137 }
2138
2139 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
2140 self.start_transaction(cx);
2141
2142 let selections = self.local_selections::<Point>(cx);
2143 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2144 let buffer = self.buffer.read(cx).snapshot(cx);
2145
2146 let mut new_cursors = Vec::new();
2147 let mut edit_ranges = Vec::new();
2148 let mut selections = selections.iter().peekable();
2149 while let Some(selection) = selections.next() {
2150 let mut rows = selection.spanned_rows(false, &display_map);
2151 let goal_display_column = selection.head().to_display_point(&display_map).column();
2152
2153 // Accumulate contiguous regions of rows that we want to delete.
2154 while let Some(next_selection) = selections.peek() {
2155 let next_rows = next_selection.spanned_rows(false, &display_map);
2156 if next_rows.start <= rows.end {
2157 rows.end = next_rows.end;
2158 selections.next().unwrap();
2159 } else {
2160 break;
2161 }
2162 }
2163
2164 let mut edit_start = Point::new(rows.start, 0).to_offset(&buffer);
2165 let edit_end;
2166 let cursor_buffer_row;
2167 if buffer.max_point().row >= rows.end {
2168 // If there's a line after the range, delete the \n from the end of the row range
2169 // and position the cursor on the next line.
2170 edit_end = Point::new(rows.end, 0).to_offset(&buffer);
2171 cursor_buffer_row = rows.end;
2172 } else {
2173 // If there isn't a line after the range, delete the \n from the line before the
2174 // start of the row range and position the cursor there.
2175 edit_start = edit_start.saturating_sub(1);
2176 edit_end = buffer.len();
2177 cursor_buffer_row = rows.start.saturating_sub(1);
2178 }
2179
2180 let mut cursor = Point::new(cursor_buffer_row, 0).to_display_point(&display_map);
2181 *cursor.column_mut() =
2182 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
2183
2184 new_cursors.push((
2185 selection.id,
2186 buffer.anchor_after(cursor.to_point(&display_map)),
2187 ));
2188 edit_ranges.push(edit_start..edit_end);
2189 }
2190
2191 let buffer = self.buffer.update(cx, |buffer, cx| {
2192 buffer.edit(edit_ranges, "", cx);
2193 buffer.snapshot(cx)
2194 });
2195 let new_selections = new_cursors
2196 .into_iter()
2197 .map(|(id, cursor)| {
2198 let cursor = cursor.to_point(&buffer);
2199 Selection {
2200 id,
2201 start: cursor,
2202 end: cursor,
2203 reversed: false,
2204 goal: SelectionGoal::None,
2205 }
2206 })
2207 .collect();
2208 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2209 self.end_transaction(cx);
2210 }
2211
2212 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
2213 self.start_transaction(cx);
2214
2215 let selections = self.local_selections::<Point>(cx);
2216 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2217 let buffer = &display_map.buffer_snapshot;
2218
2219 let mut edits = Vec::new();
2220 let mut selections_iter = selections.iter().peekable();
2221 while let Some(selection) = selections_iter.next() {
2222 // Avoid duplicating the same lines twice.
2223 let mut rows = selection.spanned_rows(false, &display_map);
2224
2225 while let Some(next_selection) = selections_iter.peek() {
2226 let next_rows = next_selection.spanned_rows(false, &display_map);
2227 if next_rows.start <= rows.end - 1 {
2228 rows.end = next_rows.end;
2229 selections_iter.next().unwrap();
2230 } else {
2231 break;
2232 }
2233 }
2234
2235 // Copy the text from the selected row region and splice it at the start of the region.
2236 let start = Point::new(rows.start, 0);
2237 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
2238 let text = buffer
2239 .text_for_range(start..end)
2240 .chain(Some("\n"))
2241 .collect::<String>();
2242 edits.push((start, text, rows.len() as u32));
2243 }
2244
2245 self.buffer.update(cx, |buffer, cx| {
2246 for (point, text, _) in edits.into_iter().rev() {
2247 buffer.edit(Some(point..point), text, cx);
2248 }
2249 });
2250
2251 self.request_autoscroll(Autoscroll::Fit, cx);
2252 self.end_transaction(cx);
2253 }
2254
2255 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
2256 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2257 let buffer = self.buffer.read(cx).snapshot(cx);
2258
2259 let mut edits = Vec::new();
2260 let mut unfold_ranges = Vec::new();
2261 let mut refold_ranges = Vec::new();
2262
2263 let selections = self.local_selections::<Point>(cx);
2264 let mut selections = selections.iter().peekable();
2265 let mut contiguous_row_selections = Vec::new();
2266 let mut new_selections = Vec::new();
2267
2268 while let Some(selection) = selections.next() {
2269 // Find all the selections that span a contiguous row range
2270 contiguous_row_selections.push(selection.clone());
2271 let start_row = selection.start.row;
2272 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
2273 display_map.next_line_boundary(selection.end).0.row + 1
2274 } else {
2275 selection.end.row
2276 };
2277
2278 while let Some(next_selection) = selections.peek() {
2279 if next_selection.start.row <= end_row {
2280 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
2281 display_map.next_line_boundary(next_selection.end).0.row + 1
2282 } else {
2283 next_selection.end.row
2284 };
2285 contiguous_row_selections.push(selections.next().unwrap().clone());
2286 } else {
2287 break;
2288 }
2289 }
2290
2291 // Move the text spanned by the row range to be before the line preceding the row range
2292 if start_row > 0 {
2293 let range_to_move = Point::new(start_row - 1, buffer.line_len(start_row - 1))
2294 ..Point::new(end_row - 1, buffer.line_len(end_row - 1));
2295 let insertion_point = display_map
2296 .prev_line_boundary(Point::new(start_row - 1, 0))
2297 .0;
2298
2299 // Don't move lines across excerpts
2300 if !buffer.range_contains_excerpt_boundary(insertion_point..range_to_move.end) {
2301 let text = buffer
2302 .text_for_range(range_to_move.clone())
2303 .flat_map(|s| s.chars())
2304 .skip(1)
2305 .chain(['\n'])
2306 .collect::<String>();
2307
2308 edits.push((
2309 buffer.anchor_after(range_to_move.start)
2310 ..buffer.anchor_before(range_to_move.end),
2311 String::new(),
2312 ));
2313 let insertion_anchor = buffer.anchor_after(insertion_point);
2314 edits.push((insertion_anchor.clone()..insertion_anchor, text));
2315
2316 let row_delta = range_to_move.start.row - insertion_point.row + 1;
2317
2318 // Move selections up
2319 new_selections.extend(contiguous_row_selections.drain(..).map(
2320 |mut selection| {
2321 selection.start.row -= row_delta;
2322 selection.end.row -= row_delta;
2323 selection
2324 },
2325 ));
2326
2327 // Move folds up
2328 unfold_ranges.push(range_to_move.clone());
2329 for fold in display_map.folds_in_range(
2330 buffer.anchor_before(range_to_move.start)
2331 ..buffer.anchor_after(range_to_move.end),
2332 ) {
2333 let mut start = fold.start.to_point(&buffer);
2334 let mut end = fold.end.to_point(&buffer);
2335 start.row -= row_delta;
2336 end.row -= row_delta;
2337 refold_ranges.push(start..end);
2338 }
2339 }
2340 }
2341
2342 // If we didn't move line(s), preserve the existing selections
2343 new_selections.extend(contiguous_row_selections.drain(..));
2344 }
2345
2346 self.start_transaction(cx);
2347 self.unfold_ranges(unfold_ranges, cx);
2348 self.buffer.update(cx, |buffer, cx| {
2349 for (range, text) in edits {
2350 buffer.edit([range], text, cx);
2351 }
2352 });
2353 self.fold_ranges(refold_ranges, cx);
2354 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2355 self.end_transaction(cx);
2356 }
2357
2358 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
2359 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2360 let buffer = self.buffer.read(cx).snapshot(cx);
2361
2362 let mut edits = Vec::new();
2363 let mut unfold_ranges = Vec::new();
2364 let mut refold_ranges = Vec::new();
2365
2366 let selections = self.local_selections::<Point>(cx);
2367 let mut selections = selections.iter().peekable();
2368 let mut contiguous_row_selections = Vec::new();
2369 let mut new_selections = Vec::new();
2370
2371 while let Some(selection) = selections.next() {
2372 // Find all the selections that span a contiguous row range
2373 contiguous_row_selections.push(selection.clone());
2374 let start_row = selection.start.row;
2375 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
2376 display_map.next_line_boundary(selection.end).0.row + 1
2377 } else {
2378 selection.end.row
2379 };
2380
2381 while let Some(next_selection) = selections.peek() {
2382 if next_selection.start.row <= end_row {
2383 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
2384 display_map.next_line_boundary(next_selection.end).0.row + 1
2385 } else {
2386 next_selection.end.row
2387 };
2388 contiguous_row_selections.push(selections.next().unwrap().clone());
2389 } else {
2390 break;
2391 }
2392 }
2393
2394 // Move the text spanned by the row range to be after the last line of the row range
2395 if end_row <= buffer.max_point().row {
2396 let range_to_move = Point::new(start_row, 0)..Point::new(end_row, 0);
2397 let insertion_point = display_map.next_line_boundary(Point::new(end_row, 0)).0;
2398
2399 // Don't move lines across excerpt boundaries
2400 if !buffer.range_contains_excerpt_boundary(range_to_move.start..insertion_point) {
2401 let mut text = String::from("\n");
2402 text.extend(buffer.text_for_range(range_to_move.clone()));
2403 text.pop(); // Drop trailing newline
2404 edits.push((
2405 buffer.anchor_after(range_to_move.start)
2406 ..buffer.anchor_before(range_to_move.end),
2407 String::new(),
2408 ));
2409 let insertion_anchor = buffer.anchor_after(insertion_point);
2410 edits.push((insertion_anchor.clone()..insertion_anchor, text));
2411
2412 let row_delta = insertion_point.row - range_to_move.end.row + 1;
2413
2414 // Move selections down
2415 new_selections.extend(contiguous_row_selections.drain(..).map(
2416 |mut selection| {
2417 selection.start.row += row_delta;
2418 selection.end.row += row_delta;
2419 selection
2420 },
2421 ));
2422
2423 // Move folds down
2424 unfold_ranges.push(range_to_move.clone());
2425 for fold in display_map.folds_in_range(
2426 buffer.anchor_before(range_to_move.start)
2427 ..buffer.anchor_after(range_to_move.end),
2428 ) {
2429 let mut start = fold.start.to_point(&buffer);
2430 let mut end = fold.end.to_point(&buffer);
2431 start.row += row_delta;
2432 end.row += row_delta;
2433 refold_ranges.push(start..end);
2434 }
2435 }
2436 }
2437
2438 // If we didn't move line(s), preserve the existing selections
2439 new_selections.extend(contiguous_row_selections.drain(..));
2440 }
2441
2442 self.start_transaction(cx);
2443 self.unfold_ranges(unfold_ranges, cx);
2444 self.buffer.update(cx, |buffer, cx| {
2445 for (range, text) in edits {
2446 buffer.edit([range], text, cx);
2447 }
2448 });
2449 self.fold_ranges(refold_ranges, cx);
2450 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2451 self.end_transaction(cx);
2452 }
2453
2454 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
2455 self.start_transaction(cx);
2456 let mut text = String::new();
2457 let mut selections = self.local_selections::<Point>(cx);
2458 let mut clipboard_selections = Vec::with_capacity(selections.len());
2459 {
2460 let buffer = self.buffer.read(cx).read(cx);
2461 let max_point = buffer.max_point();
2462 for selection in &mut selections {
2463 let is_entire_line = selection.is_empty();
2464 if is_entire_line {
2465 selection.start = Point::new(selection.start.row, 0);
2466 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
2467 }
2468 let mut len = 0;
2469 for chunk in buffer.text_for_range(selection.start..selection.end) {
2470 text.push_str(chunk);
2471 len += chunk.len();
2472 }
2473 clipboard_selections.push(ClipboardSelection {
2474 len,
2475 is_entire_line,
2476 });
2477 }
2478 }
2479 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2480 self.insert("", cx);
2481 self.end_transaction(cx);
2482
2483 cx.as_mut()
2484 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
2485 }
2486
2487 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
2488 let selections = self.local_selections::<Point>(cx);
2489 let mut text = String::new();
2490 let mut clipboard_selections = Vec::with_capacity(selections.len());
2491 {
2492 let buffer = self.buffer.read(cx).read(cx);
2493 let max_point = buffer.max_point();
2494 for selection in selections.iter() {
2495 let mut start = selection.start;
2496 let mut end = selection.end;
2497 let is_entire_line = selection.is_empty();
2498 if is_entire_line {
2499 start = Point::new(start.row, 0);
2500 end = cmp::min(max_point, Point::new(start.row + 1, 0));
2501 }
2502 let mut len = 0;
2503 for chunk in buffer.text_for_range(start..end) {
2504 text.push_str(chunk);
2505 len += chunk.len();
2506 }
2507 clipboard_selections.push(ClipboardSelection {
2508 len,
2509 is_entire_line,
2510 });
2511 }
2512 }
2513
2514 cx.as_mut()
2515 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
2516 }
2517
2518 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
2519 if let Some(item) = cx.as_mut().read_from_clipboard() {
2520 let clipboard_text = item.text();
2521 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
2522 let mut selections = self.local_selections::<usize>(cx);
2523 let all_selections_were_entire_line =
2524 clipboard_selections.iter().all(|s| s.is_entire_line);
2525 if clipboard_selections.len() != selections.len() {
2526 clipboard_selections.clear();
2527 }
2528
2529 let mut delta = 0_isize;
2530 let mut start_offset = 0;
2531 for (i, selection) in selections.iter_mut().enumerate() {
2532 let to_insert;
2533 let entire_line;
2534 if let Some(clipboard_selection) = clipboard_selections.get(i) {
2535 let end_offset = start_offset + clipboard_selection.len;
2536 to_insert = &clipboard_text[start_offset..end_offset];
2537 entire_line = clipboard_selection.is_entire_line;
2538 start_offset = end_offset
2539 } else {
2540 to_insert = clipboard_text.as_str();
2541 entire_line = all_selections_were_entire_line;
2542 }
2543
2544 selection.start = (selection.start as isize + delta) as usize;
2545 selection.end = (selection.end as isize + delta) as usize;
2546
2547 self.buffer.update(cx, |buffer, cx| {
2548 // If the corresponding selection was empty when this slice of the
2549 // clipboard text was written, then the entire line containing the
2550 // selection was copied. If this selection is also currently empty,
2551 // then paste the line before the current line of the buffer.
2552 let range = if selection.is_empty() && entire_line {
2553 let column = selection.start.to_point(&buffer.read(cx)).column as usize;
2554 let line_start = selection.start - column;
2555 line_start..line_start
2556 } else {
2557 selection.start..selection.end
2558 };
2559
2560 delta += to_insert.len() as isize - range.len() as isize;
2561 buffer.edit([range], to_insert, cx);
2562 selection.start += to_insert.len();
2563 selection.end = selection.start;
2564 });
2565 }
2566 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2567 } else {
2568 self.insert(clipboard_text, cx);
2569 }
2570 }
2571 }
2572
2573 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
2574 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
2575 if let Some((selections, _)) = self.selection_history.get(&tx_id).cloned() {
2576 self.set_selections(selections, cx);
2577 }
2578 self.request_autoscroll(Autoscroll::Fit, cx);
2579 }
2580 }
2581
2582 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
2583 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
2584 if let Some((_, Some(selections))) = self.selection_history.get(&tx_id).cloned() {
2585 self.set_selections(selections, cx);
2586 }
2587 self.request_autoscroll(Autoscroll::Fit, cx);
2588 }
2589 }
2590
2591 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
2592 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2593 let mut selections = self.local_selections::<Point>(cx);
2594 for selection in &mut selections {
2595 let start = selection.start.to_display_point(&display_map);
2596 let end = selection.end.to_display_point(&display_map);
2597
2598 if start != end {
2599 selection.end = selection.start.clone();
2600 } else {
2601 let cursor = movement::left(&display_map, start)
2602 .unwrap()
2603 .to_point(&display_map);
2604 selection.start = cursor.clone();
2605 selection.end = cursor;
2606 }
2607 selection.reversed = false;
2608 selection.goal = SelectionGoal::None;
2609 }
2610 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2611 }
2612
2613 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
2614 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2615 let mut selections = self.local_selections::<Point>(cx);
2616 for selection in &mut selections {
2617 let head = selection.head().to_display_point(&display_map);
2618 let cursor = movement::left(&display_map, head)
2619 .unwrap()
2620 .to_point(&display_map);
2621 selection.set_head(cursor);
2622 selection.goal = SelectionGoal::None;
2623 }
2624 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2625 }
2626
2627 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
2628 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2629 let mut selections = self.local_selections::<Point>(cx);
2630 for selection in &mut selections {
2631 let start = selection.start.to_display_point(&display_map);
2632 let end = selection.end.to_display_point(&display_map);
2633
2634 if start != end {
2635 selection.start = selection.end.clone();
2636 } else {
2637 let cursor = movement::right(&display_map, end)
2638 .unwrap()
2639 .to_point(&display_map);
2640 selection.start = cursor;
2641 selection.end = cursor;
2642 }
2643 selection.reversed = false;
2644 selection.goal = SelectionGoal::None;
2645 }
2646 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2647 }
2648
2649 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
2650 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2651 let mut selections = self.local_selections::<Point>(cx);
2652 for selection in &mut selections {
2653 let head = selection.head().to_display_point(&display_map);
2654 let cursor = movement::right(&display_map, head)
2655 .unwrap()
2656 .to_point(&display_map);
2657 selection.set_head(cursor);
2658 selection.goal = SelectionGoal::None;
2659 }
2660 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2661 }
2662
2663 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
2664 if let Some(completion_state) = &mut self.completion_state {
2665 if completion_state.selected_item > 0 {
2666 completion_state.selected_item -= 1;
2667 completion_state
2668 .list
2669 .scroll_to(ScrollTarget::Show(completion_state.selected_item));
2670 }
2671 cx.notify();
2672 return;
2673 }
2674
2675 if matches!(self.mode, EditorMode::SingleLine) {
2676 cx.propagate_action();
2677 return;
2678 }
2679
2680 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2681 let mut selections = self.local_selections::<Point>(cx);
2682 for selection in &mut selections {
2683 let start = selection.start.to_display_point(&display_map);
2684 let end = selection.end.to_display_point(&display_map);
2685 if start != end {
2686 selection.goal = SelectionGoal::None;
2687 }
2688
2689 let (start, goal) = movement::up(&display_map, start, selection.goal).unwrap();
2690 let cursor = start.to_point(&display_map);
2691 selection.start = cursor;
2692 selection.end = cursor;
2693 selection.goal = goal;
2694 selection.reversed = false;
2695 }
2696 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2697 }
2698
2699 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
2700 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2701 let mut selections = self.local_selections::<Point>(cx);
2702 for selection in &mut selections {
2703 let head = selection.head().to_display_point(&display_map);
2704 let (head, goal) = movement::up(&display_map, head, selection.goal).unwrap();
2705 let cursor = head.to_point(&display_map);
2706 selection.set_head(cursor);
2707 selection.goal = goal;
2708 }
2709 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2710 }
2711
2712 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
2713 if let Some(completion_state) = &mut self.completion_state {
2714 if completion_state.selected_item + 1 < completion_state.matches.len() {
2715 completion_state.selected_item += 1;
2716 completion_state
2717 .list
2718 .scroll_to(ScrollTarget::Show(completion_state.selected_item));
2719 }
2720 cx.notify();
2721 return;
2722 }
2723
2724 if matches!(self.mode, EditorMode::SingleLine) {
2725 cx.propagate_action();
2726 return;
2727 }
2728
2729 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2730 let mut selections = self.local_selections::<Point>(cx);
2731 for selection in &mut selections {
2732 let start = selection.start.to_display_point(&display_map);
2733 let end = selection.end.to_display_point(&display_map);
2734 if start != end {
2735 selection.goal = SelectionGoal::None;
2736 }
2737
2738 let (start, goal) = movement::down(&display_map, end, selection.goal).unwrap();
2739 let cursor = start.to_point(&display_map);
2740 selection.start = cursor;
2741 selection.end = cursor;
2742 selection.goal = goal;
2743 selection.reversed = false;
2744 }
2745 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2746 }
2747
2748 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
2749 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2750 let mut selections = self.local_selections::<Point>(cx);
2751 for selection in &mut selections {
2752 let head = selection.head().to_display_point(&display_map);
2753 let (head, goal) = movement::down(&display_map, head, selection.goal).unwrap();
2754 let cursor = head.to_point(&display_map);
2755 selection.set_head(cursor);
2756 selection.goal = goal;
2757 }
2758 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2759 }
2760
2761 pub fn move_to_previous_word_boundary(
2762 &mut self,
2763 _: &MoveToPreviousWordBoundary,
2764 cx: &mut ViewContext<Self>,
2765 ) {
2766 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2767 let mut selections = self.local_selections::<Point>(cx);
2768 for selection in &mut selections {
2769 let head = selection.head().to_display_point(&display_map);
2770 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2771 selection.start = cursor.clone();
2772 selection.end = cursor;
2773 selection.reversed = false;
2774 selection.goal = SelectionGoal::None;
2775 }
2776 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2777 }
2778
2779 pub fn select_to_previous_word_boundary(
2780 &mut self,
2781 _: &SelectToPreviousWordBoundary,
2782 cx: &mut ViewContext<Self>,
2783 ) {
2784 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2785 let mut selections = self.local_selections::<Point>(cx);
2786 for selection in &mut selections {
2787 let head = selection.head().to_display_point(&display_map);
2788 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2789 selection.set_head(cursor);
2790 selection.goal = SelectionGoal::None;
2791 }
2792 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2793 }
2794
2795 pub fn delete_to_previous_word_boundary(
2796 &mut self,
2797 _: &DeleteToPreviousWordBoundary,
2798 cx: &mut ViewContext<Self>,
2799 ) {
2800 self.start_transaction(cx);
2801 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2802 let mut selections = self.local_selections::<Point>(cx);
2803 for selection in &mut selections {
2804 if selection.is_empty() {
2805 let head = selection.head().to_display_point(&display_map);
2806 let cursor =
2807 movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2808 selection.set_head(cursor);
2809 selection.goal = SelectionGoal::None;
2810 }
2811 }
2812 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2813 self.insert("", cx);
2814 self.end_transaction(cx);
2815 }
2816
2817 pub fn move_to_next_word_boundary(
2818 &mut self,
2819 _: &MoveToNextWordBoundary,
2820 cx: &mut ViewContext<Self>,
2821 ) {
2822 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2823 let mut selections = self.local_selections::<Point>(cx);
2824 for selection in &mut selections {
2825 let head = selection.head().to_display_point(&display_map);
2826 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
2827 selection.start = cursor;
2828 selection.end = cursor;
2829 selection.reversed = false;
2830 selection.goal = SelectionGoal::None;
2831 }
2832 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2833 }
2834
2835 pub fn select_to_next_word_boundary(
2836 &mut self,
2837 _: &SelectToNextWordBoundary,
2838 cx: &mut ViewContext<Self>,
2839 ) {
2840 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2841 let mut selections = self.local_selections::<Point>(cx);
2842 for selection in &mut selections {
2843 let head = selection.head().to_display_point(&display_map);
2844 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
2845 selection.set_head(cursor);
2846 selection.goal = SelectionGoal::None;
2847 }
2848 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2849 }
2850
2851 pub fn delete_to_next_word_boundary(
2852 &mut self,
2853 _: &DeleteToNextWordBoundary,
2854 cx: &mut ViewContext<Self>,
2855 ) {
2856 self.start_transaction(cx);
2857 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2858 let mut selections = self.local_selections::<Point>(cx);
2859 for selection in &mut selections {
2860 if selection.is_empty() {
2861 let head = selection.head().to_display_point(&display_map);
2862 let cursor =
2863 movement::next_word_boundary(&display_map, head).to_point(&display_map);
2864 selection.set_head(cursor);
2865 selection.goal = SelectionGoal::None;
2866 }
2867 }
2868 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2869 self.insert("", cx);
2870 self.end_transaction(cx);
2871 }
2872
2873 pub fn move_to_beginning_of_line(
2874 &mut self,
2875 _: &MoveToBeginningOfLine,
2876 cx: &mut ViewContext<Self>,
2877 ) {
2878 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2879 let mut selections = self.local_selections::<Point>(cx);
2880 for selection in &mut selections {
2881 let head = selection.head().to_display_point(&display_map);
2882 let new_head = movement::line_beginning(&display_map, head, true);
2883 let cursor = new_head.to_point(&display_map);
2884 selection.start = cursor;
2885 selection.end = cursor;
2886 selection.reversed = false;
2887 selection.goal = SelectionGoal::None;
2888 }
2889 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2890 }
2891
2892 pub fn select_to_beginning_of_line(
2893 &mut self,
2894 SelectToBeginningOfLine(toggle_indent): &SelectToBeginningOfLine,
2895 cx: &mut ViewContext<Self>,
2896 ) {
2897 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2898 let mut selections = self.local_selections::<Point>(cx);
2899 for selection in &mut selections {
2900 let head = selection.head().to_display_point(&display_map);
2901 let new_head = movement::line_beginning(&display_map, head, *toggle_indent);
2902 selection.set_head(new_head.to_point(&display_map));
2903 selection.goal = SelectionGoal::None;
2904 }
2905 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2906 }
2907
2908 pub fn delete_to_beginning_of_line(
2909 &mut self,
2910 _: &DeleteToBeginningOfLine,
2911 cx: &mut ViewContext<Self>,
2912 ) {
2913 self.start_transaction(cx);
2914 self.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
2915 self.backspace(&Backspace, cx);
2916 self.end_transaction(cx);
2917 }
2918
2919 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
2920 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2921 let mut selections = self.local_selections::<Point>(cx);
2922 {
2923 for selection in &mut selections {
2924 let head = selection.head().to_display_point(&display_map);
2925 let new_head = movement::line_end(&display_map, head);
2926 let anchor = new_head.to_point(&display_map);
2927 selection.start = anchor.clone();
2928 selection.end = anchor;
2929 selection.reversed = false;
2930 selection.goal = SelectionGoal::None;
2931 }
2932 }
2933 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2934 }
2935
2936 pub fn select_to_end_of_line(&mut self, _: &SelectToEndOfLine, cx: &mut ViewContext<Self>) {
2937 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2938 let mut selections = self.local_selections::<Point>(cx);
2939 for selection in &mut selections {
2940 let head = selection.head().to_display_point(&display_map);
2941 let new_head = movement::line_end(&display_map, head);
2942 selection.set_head(new_head.to_point(&display_map));
2943 selection.goal = SelectionGoal::None;
2944 }
2945 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2946 }
2947
2948 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
2949 self.start_transaction(cx);
2950 self.select_to_end_of_line(&SelectToEndOfLine, cx);
2951 self.delete(&Delete, cx);
2952 self.end_transaction(cx);
2953 }
2954
2955 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
2956 self.start_transaction(cx);
2957 self.select_to_end_of_line(&SelectToEndOfLine, cx);
2958 self.cut(&Cut, cx);
2959 self.end_transaction(cx);
2960 }
2961
2962 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
2963 if matches!(self.mode, EditorMode::SingleLine) {
2964 cx.propagate_action();
2965 return;
2966 }
2967
2968 let selection = Selection {
2969 id: post_inc(&mut self.next_selection_id),
2970 start: 0,
2971 end: 0,
2972 reversed: false,
2973 goal: SelectionGoal::None,
2974 };
2975 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2976 }
2977
2978 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
2979 let mut selection = self.local_selections::<Point>(cx).last().unwrap().clone();
2980 selection.set_head(Point::zero());
2981 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2982 }
2983
2984 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
2985 if matches!(self.mode, EditorMode::SingleLine) {
2986 cx.propagate_action();
2987 return;
2988 }
2989
2990 let cursor = self.buffer.read(cx).read(cx).len();
2991 let selection = Selection {
2992 id: post_inc(&mut self.next_selection_id),
2993 start: cursor,
2994 end: cursor,
2995 reversed: false,
2996 goal: SelectionGoal::None,
2997 };
2998 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2999 }
3000
3001 pub fn set_nav_history(&mut self, nav_history: Option<ItemNavHistory>) {
3002 self.nav_history = nav_history;
3003 }
3004
3005 pub fn nav_history(&self) -> Option<&ItemNavHistory> {
3006 self.nav_history.as_ref()
3007 }
3008
3009 fn push_to_nav_history(
3010 &self,
3011 position: Anchor,
3012 new_position: Option<Point>,
3013 cx: &mut ViewContext<Self>,
3014 ) {
3015 if let Some(nav_history) = &self.nav_history {
3016 let buffer = self.buffer.read(cx).read(cx);
3017 let offset = position.to_offset(&buffer);
3018 let point = position.to_point(&buffer);
3019 drop(buffer);
3020
3021 if let Some(new_position) = new_position {
3022 let row_delta = (new_position.row as i64 - point.row as i64).abs();
3023 if row_delta < MIN_NAVIGATION_HISTORY_ROW_DELTA {
3024 return;
3025 }
3026 }
3027
3028 nav_history.push(Some(NavigationData {
3029 anchor: position,
3030 offset,
3031 }));
3032 }
3033 }
3034
3035 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
3036 let mut selection = self.local_selections::<usize>(cx).first().unwrap().clone();
3037 selection.set_head(self.buffer.read(cx).read(cx).len());
3038 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3039 }
3040
3041 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
3042 let selection = Selection {
3043 id: post_inc(&mut self.next_selection_id),
3044 start: 0,
3045 end: self.buffer.read(cx).read(cx).len(),
3046 reversed: false,
3047 goal: SelectionGoal::None,
3048 };
3049 self.update_selections(vec![selection], None, cx);
3050 }
3051
3052 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
3053 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3054 let mut selections = self.local_selections::<Point>(cx);
3055 let max_point = display_map.buffer_snapshot.max_point();
3056 for selection in &mut selections {
3057 let rows = selection.spanned_rows(true, &display_map);
3058 selection.start = Point::new(rows.start, 0);
3059 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
3060 selection.reversed = false;
3061 }
3062 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3063 }
3064
3065 pub fn split_selection_into_lines(
3066 &mut self,
3067 _: &SplitSelectionIntoLines,
3068 cx: &mut ViewContext<Self>,
3069 ) {
3070 let mut to_unfold = Vec::new();
3071 let mut new_selections = Vec::new();
3072 {
3073 let selections = self.local_selections::<Point>(cx);
3074 let buffer = self.buffer.read(cx).read(cx);
3075 for selection in selections {
3076 for row in selection.start.row..selection.end.row {
3077 let cursor = Point::new(row, buffer.line_len(row));
3078 new_selections.push(Selection {
3079 id: post_inc(&mut self.next_selection_id),
3080 start: cursor,
3081 end: cursor,
3082 reversed: false,
3083 goal: SelectionGoal::None,
3084 });
3085 }
3086 new_selections.push(Selection {
3087 id: selection.id,
3088 start: selection.end,
3089 end: selection.end,
3090 reversed: false,
3091 goal: SelectionGoal::None,
3092 });
3093 to_unfold.push(selection.start..selection.end);
3094 }
3095 }
3096 self.unfold_ranges(to_unfold, cx);
3097 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3098 }
3099
3100 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
3101 self.add_selection(true, cx);
3102 }
3103
3104 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
3105 self.add_selection(false, cx);
3106 }
3107
3108 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
3109 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3110 let mut selections = self.local_selections::<Point>(cx);
3111 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
3112 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
3113 let range = oldest_selection.display_range(&display_map).sorted();
3114 let columns = cmp::min(range.start.column(), range.end.column())
3115 ..cmp::max(range.start.column(), range.end.column());
3116
3117 selections.clear();
3118 let mut stack = Vec::new();
3119 for row in range.start.row()..=range.end.row() {
3120 if let Some(selection) = self.build_columnar_selection(
3121 &display_map,
3122 row,
3123 &columns,
3124 oldest_selection.reversed,
3125 ) {
3126 stack.push(selection.id);
3127 selections.push(selection);
3128 }
3129 }
3130
3131 if above {
3132 stack.reverse();
3133 }
3134
3135 AddSelectionsState { above, stack }
3136 });
3137
3138 let last_added_selection = *state.stack.last().unwrap();
3139 let mut new_selections = Vec::new();
3140 if above == state.above {
3141 let end_row = if above {
3142 0
3143 } else {
3144 display_map.max_point().row()
3145 };
3146
3147 'outer: for selection in selections {
3148 if selection.id == last_added_selection {
3149 let range = selection.display_range(&display_map).sorted();
3150 debug_assert_eq!(range.start.row(), range.end.row());
3151 let mut row = range.start.row();
3152 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
3153 {
3154 start..end
3155 } else {
3156 cmp::min(range.start.column(), range.end.column())
3157 ..cmp::max(range.start.column(), range.end.column())
3158 };
3159
3160 while row != end_row {
3161 if above {
3162 row -= 1;
3163 } else {
3164 row += 1;
3165 }
3166
3167 if let Some(new_selection) = self.build_columnar_selection(
3168 &display_map,
3169 row,
3170 &columns,
3171 selection.reversed,
3172 ) {
3173 state.stack.push(new_selection.id);
3174 if above {
3175 new_selections.push(new_selection);
3176 new_selections.push(selection);
3177 } else {
3178 new_selections.push(selection);
3179 new_selections.push(new_selection);
3180 }
3181
3182 continue 'outer;
3183 }
3184 }
3185 }
3186
3187 new_selections.push(selection);
3188 }
3189 } else {
3190 new_selections = selections;
3191 new_selections.retain(|s| s.id != last_added_selection);
3192 state.stack.pop();
3193 }
3194
3195 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3196 if state.stack.len() > 1 {
3197 self.add_selections_state = Some(state);
3198 }
3199 }
3200
3201 pub fn select_next(&mut self, action: &SelectNext, cx: &mut ViewContext<Self>) {
3202 let replace_newest = action.0;
3203 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3204 let buffer = &display_map.buffer_snapshot;
3205 let mut selections = self.local_selections::<usize>(cx);
3206 if let Some(mut select_next_state) = self.select_next_state.take() {
3207 let query = &select_next_state.query;
3208 if !select_next_state.done {
3209 let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
3210 let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
3211 let mut next_selected_range = None;
3212
3213 let bytes_after_last_selection =
3214 buffer.bytes_in_range(last_selection.end..buffer.len());
3215 let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
3216 let query_matches = query
3217 .stream_find_iter(bytes_after_last_selection)
3218 .map(|result| (last_selection.end, result))
3219 .chain(
3220 query
3221 .stream_find_iter(bytes_before_first_selection)
3222 .map(|result| (0, result)),
3223 );
3224 for (start_offset, query_match) in query_matches {
3225 let query_match = query_match.unwrap(); // can only fail due to I/O
3226 let offset_range =
3227 start_offset + query_match.start()..start_offset + query_match.end();
3228 let display_range = offset_range.start.to_display_point(&display_map)
3229 ..offset_range.end.to_display_point(&display_map);
3230
3231 if !select_next_state.wordwise
3232 || (!movement::is_inside_word(&display_map, display_range.start)
3233 && !movement::is_inside_word(&display_map, display_range.end))
3234 {
3235 next_selected_range = Some(offset_range);
3236 break;
3237 }
3238 }
3239
3240 if let Some(next_selected_range) = next_selected_range {
3241 if replace_newest {
3242 if let Some(newest_id) =
3243 selections.iter().max_by_key(|s| s.id).map(|s| s.id)
3244 {
3245 selections.retain(|s| s.id != newest_id);
3246 }
3247 }
3248 selections.push(Selection {
3249 id: post_inc(&mut self.next_selection_id),
3250 start: next_selected_range.start,
3251 end: next_selected_range.end,
3252 reversed: false,
3253 goal: SelectionGoal::None,
3254 });
3255 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3256 } else {
3257 select_next_state.done = true;
3258 }
3259 }
3260
3261 self.select_next_state = Some(select_next_state);
3262 } else if selections.len() == 1 {
3263 let selection = selections.last_mut().unwrap();
3264 if selection.start == selection.end {
3265 let word_range = movement::surrounding_word(
3266 &display_map,
3267 selection.start.to_display_point(&display_map),
3268 );
3269 selection.start = word_range.start.to_offset(&display_map, Bias::Left);
3270 selection.end = word_range.end.to_offset(&display_map, Bias::Left);
3271 selection.goal = SelectionGoal::None;
3272 selection.reversed = false;
3273
3274 let query = buffer
3275 .text_for_range(selection.start..selection.end)
3276 .collect::<String>();
3277 let select_state = SelectNextState {
3278 query: AhoCorasick::new_auto_configured(&[query]),
3279 wordwise: true,
3280 done: false,
3281 };
3282 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3283 self.select_next_state = Some(select_state);
3284 } else {
3285 let query = buffer
3286 .text_for_range(selection.start..selection.end)
3287 .collect::<String>();
3288 self.select_next_state = Some(SelectNextState {
3289 query: AhoCorasick::new_auto_configured(&[query]),
3290 wordwise: false,
3291 done: false,
3292 });
3293 self.select_next(action, cx);
3294 }
3295 }
3296 }
3297
3298 pub fn toggle_comments(&mut self, _: &ToggleComments, cx: &mut ViewContext<Self>) {
3299 // Get the line comment prefix. Split its trailing whitespace into a separate string,
3300 // as that portion won't be used for detecting if a line is a comment.
3301 let full_comment_prefix =
3302 if let Some(prefix) = self.language(cx).and_then(|l| l.line_comment_prefix()) {
3303 prefix.to_string()
3304 } else {
3305 return;
3306 };
3307 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
3308 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
3309
3310 self.start_transaction(cx);
3311 let mut selections = self.local_selections::<Point>(cx);
3312 let mut all_selection_lines_are_comments = true;
3313 let mut edit_ranges = Vec::new();
3314 let mut last_toggled_row = None;
3315 self.buffer.update(cx, |buffer, cx| {
3316 for selection in &mut selections {
3317 edit_ranges.clear();
3318 let snapshot = buffer.snapshot(cx);
3319
3320 let end_row =
3321 if selection.end.row > selection.start.row && selection.end.column == 0 {
3322 selection.end.row
3323 } else {
3324 selection.end.row + 1
3325 };
3326
3327 for row in selection.start.row..end_row {
3328 // If multiple selections contain a given row, avoid processing that
3329 // row more than once.
3330 if last_toggled_row == Some(row) {
3331 continue;
3332 } else {
3333 last_toggled_row = Some(row);
3334 }
3335
3336 if snapshot.is_line_blank(row) {
3337 continue;
3338 }
3339
3340 let start = Point::new(row, snapshot.indent_column_for_line(row));
3341 let mut line_bytes = snapshot
3342 .bytes_in_range(start..snapshot.max_point())
3343 .flatten()
3344 .copied();
3345
3346 // If this line currently begins with the line comment prefix, then record
3347 // the range containing the prefix.
3348 if all_selection_lines_are_comments
3349 && line_bytes
3350 .by_ref()
3351 .take(comment_prefix.len())
3352 .eq(comment_prefix.bytes())
3353 {
3354 // Include any whitespace that matches the comment prefix.
3355 let matching_whitespace_len = line_bytes
3356 .zip(comment_prefix_whitespace.bytes())
3357 .take_while(|(a, b)| a == b)
3358 .count() as u32;
3359 let end = Point::new(
3360 row,
3361 start.column + comment_prefix.len() as u32 + matching_whitespace_len,
3362 );
3363 edit_ranges.push(start..end);
3364 }
3365 // If this line does not begin with the line comment prefix, then record
3366 // the position where the prefix should be inserted.
3367 else {
3368 all_selection_lines_are_comments = false;
3369 edit_ranges.push(start..start);
3370 }
3371 }
3372
3373 if !edit_ranges.is_empty() {
3374 if all_selection_lines_are_comments {
3375 buffer.edit(edit_ranges.iter().cloned(), "", cx);
3376 } else {
3377 let min_column = edit_ranges.iter().map(|r| r.start.column).min().unwrap();
3378 let edit_ranges = edit_ranges.iter().map(|range| {
3379 let position = Point::new(range.start.row, min_column);
3380 position..position
3381 });
3382 buffer.edit(edit_ranges, &full_comment_prefix, cx);
3383 }
3384 }
3385 }
3386 });
3387
3388 self.update_selections(
3389 self.local_selections::<usize>(cx),
3390 Some(Autoscroll::Fit),
3391 cx,
3392 );
3393 self.end_transaction(cx);
3394 }
3395
3396 pub fn select_larger_syntax_node(
3397 &mut self,
3398 _: &SelectLargerSyntaxNode,
3399 cx: &mut ViewContext<Self>,
3400 ) {
3401 let old_selections = self.local_selections::<usize>(cx).into_boxed_slice();
3402 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3403 let buffer = self.buffer.read(cx).snapshot(cx);
3404
3405 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
3406 let mut selected_larger_node = false;
3407 let new_selections = old_selections
3408 .iter()
3409 .map(|selection| {
3410 let old_range = selection.start..selection.end;
3411 let mut new_range = old_range.clone();
3412 while let Some(containing_range) =
3413 buffer.range_for_syntax_ancestor(new_range.clone())
3414 {
3415 new_range = containing_range;
3416 if !display_map.intersects_fold(new_range.start)
3417 && !display_map.intersects_fold(new_range.end)
3418 {
3419 break;
3420 }
3421 }
3422
3423 selected_larger_node |= new_range != old_range;
3424 Selection {
3425 id: selection.id,
3426 start: new_range.start,
3427 end: new_range.end,
3428 goal: SelectionGoal::None,
3429 reversed: selection.reversed,
3430 }
3431 })
3432 .collect::<Vec<_>>();
3433
3434 if selected_larger_node {
3435 stack.push(old_selections);
3436 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3437 }
3438 self.select_larger_syntax_node_stack = stack;
3439 }
3440
3441 pub fn select_smaller_syntax_node(
3442 &mut self,
3443 _: &SelectSmallerSyntaxNode,
3444 cx: &mut ViewContext<Self>,
3445 ) {
3446 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
3447 if let Some(selections) = stack.pop() {
3448 self.update_selections(selections.to_vec(), Some(Autoscroll::Fit), cx);
3449 }
3450 self.select_larger_syntax_node_stack = stack;
3451 }
3452
3453 pub fn move_to_enclosing_bracket(
3454 &mut self,
3455 _: &MoveToEnclosingBracket,
3456 cx: &mut ViewContext<Self>,
3457 ) {
3458 let mut selections = self.local_selections::<usize>(cx);
3459 let buffer = self.buffer.read(cx).snapshot(cx);
3460 for selection in &mut selections {
3461 if let Some((open_range, close_range)) =
3462 buffer.enclosing_bracket_ranges(selection.start..selection.end)
3463 {
3464 let close_range = close_range.to_inclusive();
3465 let destination = if close_range.contains(&selection.start)
3466 && close_range.contains(&selection.end)
3467 {
3468 open_range.end
3469 } else {
3470 *close_range.start()
3471 };
3472 selection.start = destination;
3473 selection.end = destination;
3474 }
3475 }
3476
3477 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3478 }
3479
3480 pub fn show_next_diagnostic(&mut self, _: &ShowNextDiagnostic, cx: &mut ViewContext<Self>) {
3481 let buffer = self.buffer.read(cx).snapshot(cx);
3482 let selection = self.newest_selection::<usize>(&buffer);
3483 let mut active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
3484 active_diagnostics
3485 .primary_range
3486 .to_offset(&buffer)
3487 .to_inclusive()
3488 });
3489 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
3490 if active_primary_range.contains(&selection.head()) {
3491 *active_primary_range.end()
3492 } else {
3493 selection.head()
3494 }
3495 } else {
3496 selection.head()
3497 };
3498
3499 loop {
3500 let next_group = buffer
3501 .diagnostics_in_range::<_, usize>(search_start..buffer.len())
3502 .find_map(|entry| {
3503 if entry.diagnostic.is_primary
3504 && !entry.range.is_empty()
3505 && Some(entry.range.end) != active_primary_range.as_ref().map(|r| *r.end())
3506 {
3507 Some((entry.range, entry.diagnostic.group_id))
3508 } else {
3509 None
3510 }
3511 });
3512
3513 if let Some((primary_range, group_id)) = next_group {
3514 self.activate_diagnostics(group_id, cx);
3515 self.update_selections(
3516 vec![Selection {
3517 id: selection.id,
3518 start: primary_range.start,
3519 end: primary_range.start,
3520 reversed: false,
3521 goal: SelectionGoal::None,
3522 }],
3523 Some(Autoscroll::Center),
3524 cx,
3525 );
3526 break;
3527 } else if search_start == 0 {
3528 break;
3529 } else {
3530 // Cycle around to the start of the buffer, potentially moving back to the start of
3531 // the currently active diagnostic.
3532 search_start = 0;
3533 active_primary_range.take();
3534 }
3535 }
3536 }
3537
3538 pub fn go_to_definition(
3539 workspace: &mut Workspace,
3540 _: &GoToDefinition,
3541 cx: &mut ViewContext<Workspace>,
3542 ) {
3543 let active_item = workspace.active_item(cx);
3544 let editor_handle = if let Some(editor) = active_item
3545 .as_ref()
3546 .and_then(|item| item.act_as::<Self>(cx))
3547 {
3548 editor
3549 } else {
3550 return;
3551 };
3552
3553 let editor = editor_handle.read(cx);
3554 let buffer = editor.buffer.read(cx);
3555 let head = editor.newest_selection::<usize>(&buffer.read(cx)).head();
3556 let (buffer, head) = editor.buffer.read(cx).text_anchor_for_position(head, cx);
3557 let definitions = workspace
3558 .project()
3559 .update(cx, |project, cx| project.definition(&buffer, head, cx));
3560 cx.spawn(|workspace, mut cx| async move {
3561 let definitions = definitions.await?;
3562 workspace.update(&mut cx, |workspace, cx| {
3563 for definition in definitions {
3564 let range = definition
3565 .target_range
3566 .to_offset(definition.target_buffer.read(cx));
3567 let target_editor_handle = workspace
3568 .open_item(BufferItemHandle(definition.target_buffer), cx)
3569 .downcast::<Self>()
3570 .unwrap();
3571
3572 target_editor_handle.update(cx, |target_editor, cx| {
3573 // When selecting a definition in a different buffer, disable the nav history
3574 // to avoid creating a history entry at the previous cursor location.
3575 let disabled_history = if editor_handle == target_editor_handle {
3576 None
3577 } else {
3578 target_editor.nav_history.take()
3579 };
3580 target_editor.select_ranges([range], Some(Autoscroll::Center), cx);
3581 if disabled_history.is_some() {
3582 target_editor.nav_history = disabled_history;
3583 }
3584 });
3585 }
3586 });
3587
3588 Ok::<(), anyhow::Error>(())
3589 })
3590 .detach_and_log_err(cx);
3591 }
3592
3593 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
3594 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
3595 let buffer = self.buffer.read(cx).snapshot(cx);
3596 let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
3597 let is_valid = buffer
3598 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone())
3599 .any(|entry| {
3600 entry.diagnostic.is_primary
3601 && !entry.range.is_empty()
3602 && entry.range.start == primary_range_start
3603 && entry.diagnostic.message == active_diagnostics.primary_message
3604 });
3605
3606 if is_valid != active_diagnostics.is_valid {
3607 active_diagnostics.is_valid = is_valid;
3608 let mut new_styles = HashMap::default();
3609 for (block_id, diagnostic) in &active_diagnostics.blocks {
3610 new_styles.insert(
3611 *block_id,
3612 diagnostic_block_renderer(
3613 diagnostic.clone(),
3614 is_valid,
3615 self.build_settings.clone(),
3616 ),
3617 );
3618 }
3619 self.display_map
3620 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
3621 }
3622 }
3623 }
3624
3625 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) {
3626 self.dismiss_diagnostics(cx);
3627 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
3628 let buffer = self.buffer.read(cx).snapshot(cx);
3629
3630 let mut primary_range = None;
3631 let mut primary_message = None;
3632 let mut group_end = Point::zero();
3633 let diagnostic_group = buffer
3634 .diagnostic_group::<Point>(group_id)
3635 .map(|entry| {
3636 if entry.range.end > group_end {
3637 group_end = entry.range.end;
3638 }
3639 if entry.diagnostic.is_primary {
3640 primary_range = Some(entry.range.clone());
3641 primary_message = Some(entry.diagnostic.message.clone());
3642 }
3643 entry
3644 })
3645 .collect::<Vec<_>>();
3646 let primary_range = primary_range.unwrap();
3647 let primary_message = primary_message.unwrap();
3648 let primary_range =
3649 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
3650
3651 let blocks = display_map
3652 .insert_blocks(
3653 diagnostic_group.iter().map(|entry| {
3654 let build_settings = self.build_settings.clone();
3655 let diagnostic = entry.diagnostic.clone();
3656 let message_height = diagnostic.message.lines().count() as u8;
3657
3658 BlockProperties {
3659 position: buffer.anchor_after(entry.range.start),
3660 height: message_height,
3661 render: diagnostic_block_renderer(diagnostic, true, build_settings),
3662 disposition: BlockDisposition::Below,
3663 }
3664 }),
3665 cx,
3666 )
3667 .into_iter()
3668 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
3669 .collect();
3670
3671 Some(ActiveDiagnosticGroup {
3672 primary_range,
3673 primary_message,
3674 blocks,
3675 is_valid: true,
3676 })
3677 });
3678 }
3679
3680 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
3681 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
3682 self.display_map.update(cx, |display_map, cx| {
3683 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
3684 });
3685 cx.notify();
3686 }
3687 }
3688
3689 fn build_columnar_selection(
3690 &mut self,
3691 display_map: &DisplaySnapshot,
3692 row: u32,
3693 columns: &Range<u32>,
3694 reversed: bool,
3695 ) -> Option<Selection<Point>> {
3696 let is_empty = columns.start == columns.end;
3697 let line_len = display_map.line_len(row);
3698 if columns.start < line_len || (is_empty && columns.start == line_len) {
3699 let start = DisplayPoint::new(row, columns.start);
3700 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
3701 Some(Selection {
3702 id: post_inc(&mut self.next_selection_id),
3703 start: start.to_point(display_map),
3704 end: end.to_point(display_map),
3705 reversed,
3706 goal: SelectionGoal::ColumnRange {
3707 start: columns.start,
3708 end: columns.end,
3709 },
3710 })
3711 } else {
3712 None
3713 }
3714 }
3715
3716 pub fn local_selections_in_range(
3717 &self,
3718 range: Range<Anchor>,
3719 display_map: &DisplaySnapshot,
3720 ) -> Vec<Selection<Point>> {
3721 let buffer = &display_map.buffer_snapshot;
3722
3723 let start_ix = match self
3724 .selections
3725 .binary_search_by(|probe| probe.end.cmp(&range.start, &buffer).unwrap())
3726 {
3727 Ok(ix) | Err(ix) => ix,
3728 };
3729 let end_ix = match self
3730 .selections
3731 .binary_search_by(|probe| probe.start.cmp(&range.end, &buffer).unwrap())
3732 {
3733 Ok(ix) => ix + 1,
3734 Err(ix) => ix,
3735 };
3736
3737 fn point_selection(
3738 selection: &Selection<Anchor>,
3739 buffer: &MultiBufferSnapshot,
3740 ) -> Selection<Point> {
3741 let start = selection.start.to_point(&buffer);
3742 let end = selection.end.to_point(&buffer);
3743 Selection {
3744 id: selection.id,
3745 start,
3746 end,
3747 reversed: selection.reversed,
3748 goal: selection.goal,
3749 }
3750 }
3751
3752 self.selections[start_ix..end_ix]
3753 .iter()
3754 .chain(
3755 self.pending_selection
3756 .as_ref()
3757 .map(|pending| &pending.selection),
3758 )
3759 .map(|s| point_selection(s, &buffer))
3760 .collect()
3761 }
3762
3763 pub fn local_selections<'a, D>(&self, cx: &'a AppContext) -> Vec<Selection<D>>
3764 where
3765 D: 'a + TextDimension + Ord + Sub<D, Output = D>,
3766 {
3767 let buffer = self.buffer.read(cx).snapshot(cx);
3768 let mut selections = self
3769 .resolve_selections::<D, _>(self.selections.iter(), &buffer)
3770 .peekable();
3771
3772 let mut pending_selection = self.pending_selection::<D>(&buffer);
3773
3774 iter::from_fn(move || {
3775 if let Some(pending) = pending_selection.as_mut() {
3776 while let Some(next_selection) = selections.peek() {
3777 if pending.start <= next_selection.end && pending.end >= next_selection.start {
3778 let next_selection = selections.next().unwrap();
3779 if next_selection.start < pending.start {
3780 pending.start = next_selection.start;
3781 }
3782 if next_selection.end > pending.end {
3783 pending.end = next_selection.end;
3784 }
3785 } else if next_selection.end < pending.start {
3786 return selections.next();
3787 } else {
3788 break;
3789 }
3790 }
3791
3792 pending_selection.take()
3793 } else {
3794 selections.next()
3795 }
3796 })
3797 .collect()
3798 }
3799
3800 fn resolve_selections<'a, D, I>(
3801 &self,
3802 selections: I,
3803 snapshot: &MultiBufferSnapshot,
3804 ) -> impl 'a + Iterator<Item = Selection<D>>
3805 where
3806 D: TextDimension + Ord + Sub<D, Output = D>,
3807 I: 'a + IntoIterator<Item = &'a Selection<Anchor>>,
3808 {
3809 let (to_summarize, selections) = selections.into_iter().tee();
3810 let mut summaries = snapshot
3811 .summaries_for_anchors::<D, _>(to_summarize.flat_map(|s| [&s.start, &s.end]))
3812 .into_iter();
3813 selections.map(move |s| Selection {
3814 id: s.id,
3815 start: summaries.next().unwrap(),
3816 end: summaries.next().unwrap(),
3817 reversed: s.reversed,
3818 goal: s.goal,
3819 })
3820 }
3821
3822 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3823 &self,
3824 snapshot: &MultiBufferSnapshot,
3825 ) -> Option<Selection<D>> {
3826 self.pending_selection
3827 .as_ref()
3828 .map(|pending| self.resolve_selection(&pending.selection, &snapshot))
3829 }
3830
3831 fn resolve_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3832 &self,
3833 selection: &Selection<Anchor>,
3834 buffer: &MultiBufferSnapshot,
3835 ) -> Selection<D> {
3836 Selection {
3837 id: selection.id,
3838 start: selection.start.summary::<D>(&buffer),
3839 end: selection.end.summary::<D>(&buffer),
3840 reversed: selection.reversed,
3841 goal: selection.goal,
3842 }
3843 }
3844
3845 fn selection_count<'a>(&self) -> usize {
3846 let mut count = self.selections.len();
3847 if self.pending_selection.is_some() {
3848 count += 1;
3849 }
3850 count
3851 }
3852
3853 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3854 &self,
3855 snapshot: &MultiBufferSnapshot,
3856 ) -> Selection<D> {
3857 self.selections
3858 .iter()
3859 .min_by_key(|s| s.id)
3860 .map(|selection| self.resolve_selection(selection, snapshot))
3861 .or_else(|| self.pending_selection(snapshot))
3862 .unwrap()
3863 }
3864
3865 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3866 &self,
3867 snapshot: &MultiBufferSnapshot,
3868 ) -> Selection<D> {
3869 self.resolve_selection(self.newest_anchor_selection().unwrap(), snapshot)
3870 }
3871
3872 pub fn newest_anchor_selection(&self) -> Option<&Selection<Anchor>> {
3873 self.pending_selection
3874 .as_ref()
3875 .map(|s| &s.selection)
3876 .or_else(|| self.selections.iter().max_by_key(|s| s.id))
3877 }
3878
3879 pub fn update_selections<T>(
3880 &mut self,
3881 mut selections: Vec<Selection<T>>,
3882 autoscroll: Option<Autoscroll>,
3883 cx: &mut ViewContext<Self>,
3884 ) where
3885 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
3886 {
3887 let buffer = self.buffer.read(cx).snapshot(cx);
3888 selections.sort_unstable_by_key(|s| s.start);
3889
3890 // Merge overlapping selections.
3891 let mut i = 1;
3892 while i < selections.len() {
3893 if selections[i - 1].end >= selections[i].start {
3894 let removed = selections.remove(i);
3895 if removed.start < selections[i - 1].start {
3896 selections[i - 1].start = removed.start;
3897 }
3898 if removed.end > selections[i - 1].end {
3899 selections[i - 1].end = removed.end;
3900 }
3901 } else {
3902 i += 1;
3903 }
3904 }
3905
3906 if let Some(autoscroll) = autoscroll {
3907 self.request_autoscroll(autoscroll, cx);
3908 }
3909
3910 self.set_selections(
3911 Arc::from_iter(selections.into_iter().map(|selection| {
3912 let end_bias = if selection.end > selection.start {
3913 Bias::Left
3914 } else {
3915 Bias::Right
3916 };
3917 Selection {
3918 id: selection.id,
3919 start: buffer.anchor_after(selection.start),
3920 end: buffer.anchor_at(selection.end, end_bias),
3921 reversed: selection.reversed,
3922 goal: selection.goal,
3923 }
3924 })),
3925 cx,
3926 );
3927 }
3928
3929 /// Compute new ranges for any selections that were located in excerpts that have
3930 /// since been removed.
3931 ///
3932 /// Returns a `HashMap` indicating which selections whose former head position
3933 /// was no longer present. The keys of the map are selection ids. The values are
3934 /// the id of the new excerpt where the head of the selection has been moved.
3935 pub fn refresh_selections(&mut self, cx: &mut ViewContext<Self>) -> HashMap<usize, ExcerptId> {
3936 let snapshot = self.buffer.read(cx).read(cx);
3937 let anchors_with_status = snapshot.refresh_anchors(
3938 self.selections
3939 .iter()
3940 .flat_map(|selection| [&selection.start, &selection.end]),
3941 );
3942 let offsets =
3943 snapshot.summaries_for_anchors::<usize, _>(anchors_with_status.iter().map(|a| &a.1));
3944 let offsets = offsets.chunks(2);
3945 let statuses = anchors_with_status
3946 .chunks(2)
3947 .map(|a| (a[0].0 / 2, a[0].2, a[1].2));
3948
3949 let mut selections_with_lost_position = HashMap::default();
3950 let new_selections = offsets
3951 .zip(statuses)
3952 .map(|(offsets, (selection_ix, kept_start, kept_end))| {
3953 let selection = &self.selections[selection_ix];
3954 let kept_head = if selection.reversed {
3955 kept_start
3956 } else {
3957 kept_end
3958 };
3959 if !kept_head {
3960 selections_with_lost_position
3961 .insert(selection.id, selection.head().excerpt_id.clone());
3962 }
3963
3964 Selection {
3965 id: selection.id,
3966 start: offsets[0],
3967 end: offsets[1],
3968 reversed: selection.reversed,
3969 goal: selection.goal,
3970 }
3971 })
3972 .collect();
3973 drop(snapshot);
3974 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3975 selections_with_lost_position
3976 }
3977
3978 fn set_selections(&mut self, selections: Arc<[Selection<Anchor>]>, cx: &mut ViewContext<Self>) {
3979 let old_cursor_position = self.newest_anchor_selection().map(|s| s.head());
3980 self.selections = selections;
3981 if self.focused {
3982 self.buffer.update(cx, |buffer, cx| {
3983 buffer.set_active_selections(&self.selections, cx)
3984 });
3985 }
3986
3987 let buffer = self.buffer.read(cx).snapshot(cx);
3988 self.pending_selection = None;
3989 self.add_selections_state = None;
3990 self.select_next_state = None;
3991 self.select_larger_syntax_node_stack.clear();
3992 self.autoclose_stack.invalidate(&self.selections, &buffer);
3993 self.snippet_stack.invalidate(&self.selections, &buffer);
3994
3995 let new_cursor_position = self
3996 .selections
3997 .iter()
3998 .max_by_key(|s| s.id)
3999 .map(|s| s.head());
4000 if let Some(old_cursor_position) = old_cursor_position {
4001 if let Some(new_cursor_position) = new_cursor_position.as_ref() {
4002 self.push_to_nav_history(
4003 old_cursor_position,
4004 Some(new_cursor_position.to_point(&buffer)),
4005 cx,
4006 );
4007 }
4008 }
4009
4010 if let Some((completion_state, cursor_position)) =
4011 self.completion_state.as_mut().zip(new_cursor_position)
4012 {
4013 let cursor_position = cursor_position.to_offset(&buffer);
4014 let (word_range, kind) =
4015 buffer.surrounding_word(completion_state.initial_position.clone());
4016 if kind == Some(CharKind::Word) && word_range.to_inclusive().contains(&cursor_position)
4017 {
4018 let query = Self::completion_query(&buffer, cursor_position);
4019 cx.background()
4020 .block(completion_state.filter(query.as_deref(), cx.background().clone()));
4021 self.show_completions(&ShowCompletions, cx);
4022 } else {
4023 self.hide_completions(cx);
4024 }
4025 }
4026
4027 self.pause_cursor_blinking(cx);
4028 cx.emit(Event::SelectionsChanged);
4029 }
4030
4031 pub fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
4032 self.autoscroll_request = Some(autoscroll);
4033 cx.notify();
4034 }
4035
4036 fn start_transaction(&mut self, cx: &mut ViewContext<Self>) {
4037 self.start_transaction_at(Instant::now(), cx);
4038 }
4039
4040 fn start_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
4041 self.end_selection(cx);
4042 if let Some(tx_id) = self
4043 .buffer
4044 .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
4045 {
4046 self.selection_history
4047 .insert(tx_id, (self.selections.clone(), None));
4048 }
4049 }
4050
4051 fn end_transaction(&mut self, cx: &mut ViewContext<Self>) {
4052 self.end_transaction_at(Instant::now(), cx);
4053 }
4054
4055 fn end_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
4056 if let Some(tx_id) = self
4057 .buffer
4058 .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
4059 {
4060 if let Some((_, end_selections)) = self.selection_history.get_mut(&tx_id) {
4061 *end_selections = Some(self.selections.clone());
4062 } else {
4063 log::error!("unexpectedly ended a transaction that wasn't started by this editor");
4064 }
4065 }
4066 }
4067
4068 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
4069 log::info!("Editor::page_up");
4070 }
4071
4072 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
4073 log::info!("Editor::page_down");
4074 }
4075
4076 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
4077 let mut fold_ranges = Vec::new();
4078
4079 let selections = self.local_selections::<Point>(cx);
4080 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4081 for selection in selections {
4082 let range = selection.display_range(&display_map).sorted();
4083 let buffer_start_row = range.start.to_point(&display_map).row;
4084
4085 for row in (0..=range.end.row()).rev() {
4086 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
4087 let fold_range = self.foldable_range_for_line(&display_map, row);
4088 if fold_range.end.row >= buffer_start_row {
4089 fold_ranges.push(fold_range);
4090 if row <= range.start.row() {
4091 break;
4092 }
4093 }
4094 }
4095 }
4096 }
4097
4098 self.fold_ranges(fold_ranges, cx);
4099 }
4100
4101 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
4102 let selections = self.local_selections::<Point>(cx);
4103 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4104 let buffer = &display_map.buffer_snapshot;
4105 let ranges = selections
4106 .iter()
4107 .map(|s| {
4108 let range = s.display_range(&display_map).sorted();
4109 let mut start = range.start.to_point(&display_map);
4110 let mut end = range.end.to_point(&display_map);
4111 start.column = 0;
4112 end.column = buffer.line_len(end.row);
4113 start..end
4114 })
4115 .collect::<Vec<_>>();
4116 self.unfold_ranges(ranges, cx);
4117 }
4118
4119 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
4120 let max_point = display_map.max_point();
4121 if display_row >= max_point.row() {
4122 false
4123 } else {
4124 let (start_indent, is_blank) = display_map.line_indent(display_row);
4125 if is_blank {
4126 false
4127 } else {
4128 for display_row in display_row + 1..=max_point.row() {
4129 let (indent, is_blank) = display_map.line_indent(display_row);
4130 if !is_blank {
4131 return indent > start_indent;
4132 }
4133 }
4134 false
4135 }
4136 }
4137 }
4138
4139 fn foldable_range_for_line(
4140 &self,
4141 display_map: &DisplaySnapshot,
4142 start_row: u32,
4143 ) -> Range<Point> {
4144 let max_point = display_map.max_point();
4145
4146 let (start_indent, _) = display_map.line_indent(start_row);
4147 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
4148 let mut end = None;
4149 for row in start_row + 1..=max_point.row() {
4150 let (indent, is_blank) = display_map.line_indent(row);
4151 if !is_blank && indent <= start_indent {
4152 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
4153 break;
4154 }
4155 }
4156
4157 let end = end.unwrap_or(max_point);
4158 return start.to_point(display_map)..end.to_point(display_map);
4159 }
4160
4161 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
4162 let selections = self.local_selections::<Point>(cx);
4163 let ranges = selections.into_iter().map(|s| s.start..s.end);
4164 self.fold_ranges(ranges, cx);
4165 }
4166
4167 fn fold_ranges<T: ToOffset>(
4168 &mut self,
4169 ranges: impl IntoIterator<Item = Range<T>>,
4170 cx: &mut ViewContext<Self>,
4171 ) {
4172 let mut ranges = ranges.into_iter().peekable();
4173 if ranges.peek().is_some() {
4174 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
4175 self.request_autoscroll(Autoscroll::Fit, cx);
4176 cx.notify();
4177 }
4178 }
4179
4180 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
4181 if !ranges.is_empty() {
4182 self.display_map
4183 .update(cx, |map, cx| map.unfold(ranges, cx));
4184 self.request_autoscroll(Autoscroll::Fit, cx);
4185 cx.notify();
4186 }
4187 }
4188
4189 pub fn insert_blocks(
4190 &mut self,
4191 blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
4192 cx: &mut ViewContext<Self>,
4193 ) -> Vec<BlockId> {
4194 let blocks = self
4195 .display_map
4196 .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
4197 self.request_autoscroll(Autoscroll::Fit, cx);
4198 blocks
4199 }
4200
4201 pub fn replace_blocks(
4202 &mut self,
4203 blocks: HashMap<BlockId, RenderBlock>,
4204 cx: &mut ViewContext<Self>,
4205 ) {
4206 self.display_map
4207 .update(cx, |display_map, _| display_map.replace_blocks(blocks));
4208 self.request_autoscroll(Autoscroll::Fit, cx);
4209 }
4210
4211 pub fn remove_blocks(&mut self, block_ids: HashSet<BlockId>, cx: &mut ViewContext<Self>) {
4212 self.display_map.update(cx, |display_map, cx| {
4213 display_map.remove_blocks(block_ids, cx)
4214 });
4215 }
4216
4217 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
4218 self.display_map
4219 .update(cx, |map, cx| map.snapshot(cx))
4220 .longest_row()
4221 }
4222
4223 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
4224 self.display_map
4225 .update(cx, |map, cx| map.snapshot(cx))
4226 .max_point()
4227 }
4228
4229 pub fn text(&self, cx: &AppContext) -> String {
4230 self.buffer.read(cx).read(cx).text()
4231 }
4232
4233 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
4234 self.display_map
4235 .update(cx, |map, cx| map.snapshot(cx))
4236 .text()
4237 }
4238
4239 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
4240 self.display_map
4241 .update(cx, |map, cx| map.set_wrap_width(width, cx))
4242 }
4243
4244 pub fn set_highlighted_rows(&mut self, rows: Option<Range<u32>>) {
4245 self.highlighted_rows = rows;
4246 }
4247
4248 pub fn highlighted_rows(&self) -> Option<Range<u32>> {
4249 self.highlighted_rows.clone()
4250 }
4251
4252 pub fn highlight_ranges<T: 'static>(
4253 &mut self,
4254 ranges: Vec<Range<Anchor>>,
4255 color: Color,
4256 cx: &mut ViewContext<Self>,
4257 ) {
4258 self.highlighted_ranges
4259 .insert(TypeId::of::<T>(), (color, ranges));
4260 cx.notify();
4261 }
4262
4263 pub fn clear_highlighted_ranges<T: 'static>(&mut self, cx: &mut ViewContext<Self>) {
4264 self.highlighted_ranges.remove(&TypeId::of::<T>());
4265 cx.notify();
4266 }
4267
4268 #[cfg(feature = "test-support")]
4269 pub fn all_highlighted_ranges(
4270 &mut self,
4271 cx: &mut ViewContext<Self>,
4272 ) -> Vec<(Range<DisplayPoint>, Color)> {
4273 let snapshot = self.snapshot(cx);
4274 let buffer = &snapshot.buffer_snapshot;
4275 let start = buffer.anchor_before(0);
4276 let end = buffer.anchor_after(buffer.len());
4277 self.highlighted_ranges_in_range(start..end, &snapshot)
4278 }
4279
4280 pub fn highlighted_ranges_for_type<T: 'static>(&self) -> Option<(Color, &[Range<Anchor>])> {
4281 self.highlighted_ranges
4282 .get(&TypeId::of::<T>())
4283 .map(|(color, ranges)| (*color, ranges.as_slice()))
4284 }
4285
4286 pub fn highlighted_ranges_in_range(
4287 &self,
4288 search_range: Range<Anchor>,
4289 display_snapshot: &DisplaySnapshot,
4290 ) -> Vec<(Range<DisplayPoint>, Color)> {
4291 let mut results = Vec::new();
4292 let buffer = &display_snapshot.buffer_snapshot;
4293 for (color, ranges) in self.highlighted_ranges.values() {
4294 let start_ix = match ranges.binary_search_by(|probe| {
4295 let cmp = probe.end.cmp(&search_range.start, &buffer).unwrap();
4296 if cmp.is_gt() {
4297 Ordering::Greater
4298 } else {
4299 Ordering::Less
4300 }
4301 }) {
4302 Ok(i) | Err(i) => i,
4303 };
4304 for range in &ranges[start_ix..] {
4305 if range.start.cmp(&search_range.end, &buffer).unwrap().is_ge() {
4306 break;
4307 }
4308 let start = range
4309 .start
4310 .to_point(buffer)
4311 .to_display_point(display_snapshot);
4312 let end = range
4313 .end
4314 .to_point(buffer)
4315 .to_display_point(display_snapshot);
4316 results.push((start..end, *color))
4317 }
4318 }
4319 results
4320 }
4321
4322 fn next_blink_epoch(&mut self) -> usize {
4323 self.blink_epoch += 1;
4324 self.blink_epoch
4325 }
4326
4327 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
4328 if !self.focused {
4329 return;
4330 }
4331
4332 self.show_local_cursors = true;
4333 cx.notify();
4334
4335 let epoch = self.next_blink_epoch();
4336 cx.spawn(|this, mut cx| {
4337 let this = this.downgrade();
4338 async move {
4339 Timer::after(CURSOR_BLINK_INTERVAL).await;
4340 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
4341 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
4342 }
4343 }
4344 })
4345 .detach();
4346 }
4347
4348 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
4349 if epoch == self.blink_epoch {
4350 self.blinking_paused = false;
4351 self.blink_cursors(epoch, cx);
4352 }
4353 }
4354
4355 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
4356 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
4357 self.show_local_cursors = !self.show_local_cursors;
4358 cx.notify();
4359
4360 let epoch = self.next_blink_epoch();
4361 cx.spawn(|this, mut cx| {
4362 let this = this.downgrade();
4363 async move {
4364 Timer::after(CURSOR_BLINK_INTERVAL).await;
4365 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
4366 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
4367 }
4368 }
4369 })
4370 .detach();
4371 }
4372 }
4373
4374 pub fn show_local_cursors(&self) -> bool {
4375 self.show_local_cursors
4376 }
4377
4378 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
4379 self.refresh_active_diagnostics(cx);
4380 cx.notify();
4381 }
4382
4383 fn on_buffer_event(
4384 &mut self,
4385 _: ModelHandle<MultiBuffer>,
4386 event: &language::Event,
4387 cx: &mut ViewContext<Self>,
4388 ) {
4389 match event {
4390 language::Event::Edited => cx.emit(Event::Edited),
4391 language::Event::Dirtied => cx.emit(Event::Dirtied),
4392 language::Event::Saved => cx.emit(Event::Saved),
4393 language::Event::FileHandleChanged => cx.emit(Event::TitleChanged),
4394 language::Event::Reloaded => cx.emit(Event::TitleChanged),
4395 language::Event::Closed => cx.emit(Event::Closed),
4396 _ => {}
4397 }
4398 }
4399
4400 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
4401 cx.notify();
4402 }
4403}
4404
4405impl EditorSnapshot {
4406 pub fn is_focused(&self) -> bool {
4407 self.is_focused
4408 }
4409
4410 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
4411 self.placeholder_text.as_ref()
4412 }
4413
4414 pub fn scroll_position(&self) -> Vector2F {
4415 compute_scroll_position(
4416 &self.display_snapshot,
4417 self.scroll_position,
4418 &self.scroll_top_anchor,
4419 )
4420 }
4421}
4422
4423impl Deref for EditorSnapshot {
4424 type Target = DisplaySnapshot;
4425
4426 fn deref(&self) -> &Self::Target {
4427 &self.display_snapshot
4428 }
4429}
4430
4431impl EditorSettings {
4432 #[cfg(any(test, feature = "test-support"))]
4433 pub fn test(cx: &AppContext) -> Self {
4434 use theme::{ContainedLabel, ContainedText, DiagnosticHeader, DiagnosticPathHeader};
4435
4436 Self {
4437 tab_size: 4,
4438 soft_wrap: SoftWrap::None,
4439 style: {
4440 let font_cache: &gpui::FontCache = cx.font_cache();
4441 let font_family_name = Arc::from("Monaco");
4442 let font_properties = Default::default();
4443 let font_family_id = font_cache.load_family(&[&font_family_name]).unwrap();
4444 let font_id = font_cache
4445 .select_font(font_family_id, &font_properties)
4446 .unwrap();
4447 let text = gpui::fonts::TextStyle {
4448 font_family_name,
4449 font_family_id,
4450 font_id,
4451 font_size: 14.,
4452 color: gpui::color::Color::from_u32(0xff0000ff),
4453 font_properties,
4454 underline: None,
4455 };
4456 let default_diagnostic_style = DiagnosticStyle {
4457 message: text.clone().into(),
4458 header: Default::default(),
4459 text_scale_factor: 1.,
4460 };
4461 EditorStyle {
4462 text: text.clone(),
4463 placeholder_text: None,
4464 background: Default::default(),
4465 gutter_background: Default::default(),
4466 gutter_padding_factor: 2.,
4467 active_line_background: Default::default(),
4468 highlighted_line_background: Default::default(),
4469 line_number: Default::default(),
4470 line_number_active: Default::default(),
4471 selection: Default::default(),
4472 guest_selections: Default::default(),
4473 syntax: Default::default(),
4474 diagnostic_path_header: DiagnosticPathHeader {
4475 container: Default::default(),
4476 filename: ContainedText {
4477 container: Default::default(),
4478 text: text.clone(),
4479 },
4480 path: ContainedText {
4481 container: Default::default(),
4482 text: text.clone(),
4483 },
4484 text_scale_factor: 1.,
4485 },
4486 diagnostic_header: DiagnosticHeader {
4487 container: Default::default(),
4488 message: ContainedLabel {
4489 container: Default::default(),
4490 label: text.clone().into(),
4491 },
4492 code: ContainedText {
4493 container: Default::default(),
4494 text: text.clone(),
4495 },
4496 icon_width_factor: 1.,
4497 text_scale_factor: 1.,
4498 },
4499 error_diagnostic: default_diagnostic_style.clone(),
4500 invalid_error_diagnostic: default_diagnostic_style.clone(),
4501 warning_diagnostic: default_diagnostic_style.clone(),
4502 invalid_warning_diagnostic: default_diagnostic_style.clone(),
4503 information_diagnostic: default_diagnostic_style.clone(),
4504 invalid_information_diagnostic: default_diagnostic_style.clone(),
4505 hint_diagnostic: default_diagnostic_style.clone(),
4506 invalid_hint_diagnostic: default_diagnostic_style.clone(),
4507 autocomplete: Default::default(),
4508 }
4509 },
4510 }
4511 }
4512}
4513
4514fn compute_scroll_position(
4515 snapshot: &DisplaySnapshot,
4516 mut scroll_position: Vector2F,
4517 scroll_top_anchor: &Option<Anchor>,
4518) -> Vector2F {
4519 if let Some(anchor) = scroll_top_anchor {
4520 let scroll_top = anchor.to_display_point(snapshot).row() as f32;
4521 scroll_position.set_y(scroll_top + scroll_position.y());
4522 } else {
4523 scroll_position.set_y(0.);
4524 }
4525 scroll_position
4526}
4527
4528#[derive(Copy, Clone)]
4529pub enum Event {
4530 Activate,
4531 Edited,
4532 Blurred,
4533 Dirtied,
4534 Saved,
4535 TitleChanged,
4536 SelectionsChanged,
4537 Closed,
4538}
4539
4540impl Entity for Editor {
4541 type Event = Event;
4542}
4543
4544impl View for Editor {
4545 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
4546 let settings = (self.build_settings)(cx);
4547 self.display_map.update(cx, |map, cx| {
4548 map.set_font(
4549 settings.style.text.font_id,
4550 settings.style.text.font_size,
4551 cx,
4552 )
4553 });
4554 EditorElement::new(self.handle.clone(), settings).boxed()
4555 }
4556
4557 fn ui_name() -> &'static str {
4558 "Editor"
4559 }
4560
4561 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
4562 self.focused = true;
4563 self.blink_cursors(self.blink_epoch, cx);
4564 self.buffer.update(cx, |buffer, cx| {
4565 buffer.avoid_grouping_next_transaction(cx);
4566 buffer.set_active_selections(&self.selections, cx)
4567 });
4568 }
4569
4570 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
4571 self.focused = false;
4572 self.show_local_cursors = false;
4573 self.buffer
4574 .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
4575 self.hide_completions(cx);
4576 cx.emit(Event::Blurred);
4577 cx.notify();
4578 }
4579
4580 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
4581 let mut cx = Self::default_keymap_context();
4582 let mode = match self.mode {
4583 EditorMode::SingleLine => "single_line",
4584 EditorMode::AutoHeight { .. } => "auto_height",
4585 EditorMode::Full => "full",
4586 };
4587 cx.map.insert("mode".into(), mode.into());
4588 if self.completion_state.is_some() {
4589 cx.set.insert("completing".into());
4590 }
4591 cx
4592 }
4593}
4594
4595impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
4596 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
4597 let start = self.start.to_point(buffer);
4598 let end = self.end.to_point(buffer);
4599 if self.reversed {
4600 end..start
4601 } else {
4602 start..end
4603 }
4604 }
4605
4606 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
4607 let start = self.start.to_offset(buffer);
4608 let end = self.end.to_offset(buffer);
4609 if self.reversed {
4610 end..start
4611 } else {
4612 start..end
4613 }
4614 }
4615
4616 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
4617 let start = self
4618 .start
4619 .to_point(&map.buffer_snapshot)
4620 .to_display_point(map);
4621 let end = self
4622 .end
4623 .to_point(&map.buffer_snapshot)
4624 .to_display_point(map);
4625 if self.reversed {
4626 end..start
4627 } else {
4628 start..end
4629 }
4630 }
4631
4632 fn spanned_rows(
4633 &self,
4634 include_end_if_at_line_start: bool,
4635 map: &DisplaySnapshot,
4636 ) -> Range<u32> {
4637 let start = self.start.to_point(&map.buffer_snapshot);
4638 let mut end = self.end.to_point(&map.buffer_snapshot);
4639 if !include_end_if_at_line_start && start.row != end.row && end.column == 0 {
4640 end.row -= 1;
4641 }
4642
4643 let buffer_start = map.prev_line_boundary(start).0;
4644 let buffer_end = map.next_line_boundary(end).0;
4645 buffer_start.row..buffer_end.row + 1
4646 }
4647}
4648
4649impl<T: InvalidationRegion> InvalidationStack<T> {
4650 fn invalidate<S>(&mut self, selections: &[Selection<S>], buffer: &MultiBufferSnapshot)
4651 where
4652 S: Clone + ToOffset,
4653 {
4654 while let Some(region) = self.last() {
4655 let all_selections_inside_invalidation_ranges =
4656 if selections.len() == region.ranges().len() {
4657 selections
4658 .iter()
4659 .zip(region.ranges().iter().map(|r| r.to_offset(&buffer)))
4660 .all(|(selection, invalidation_range)| {
4661 let head = selection.head().to_offset(&buffer);
4662 invalidation_range.start <= head && invalidation_range.end >= head
4663 })
4664 } else {
4665 false
4666 };
4667
4668 if all_selections_inside_invalidation_ranges {
4669 break;
4670 } else {
4671 self.pop();
4672 }
4673 }
4674 }
4675}
4676
4677impl<T> Default for InvalidationStack<T> {
4678 fn default() -> Self {
4679 Self(Default::default())
4680 }
4681}
4682
4683impl<T> Deref for InvalidationStack<T> {
4684 type Target = Vec<T>;
4685
4686 fn deref(&self) -> &Self::Target {
4687 &self.0
4688 }
4689}
4690
4691impl<T> DerefMut for InvalidationStack<T> {
4692 fn deref_mut(&mut self) -> &mut Self::Target {
4693 &mut self.0
4694 }
4695}
4696
4697impl InvalidationRegion for BracketPairState {
4698 fn ranges(&self) -> &[Range<Anchor>] {
4699 &self.ranges
4700 }
4701}
4702
4703impl InvalidationRegion for SnippetState {
4704 fn ranges(&self) -> &[Range<Anchor>] {
4705 &self.ranges[self.active_index]
4706 }
4707}
4708
4709pub fn diagnostic_block_renderer(
4710 diagnostic: Diagnostic,
4711 is_valid: bool,
4712 build_settings: BuildSettings,
4713) -> RenderBlock {
4714 let mut highlighted_lines = Vec::new();
4715 for line in diagnostic.message.lines() {
4716 highlighted_lines.push(highlight_diagnostic_message(line));
4717 }
4718
4719 Arc::new(move |cx: &BlockContext| {
4720 let settings = build_settings(cx);
4721 let style = diagnostic_style(diagnostic.severity, is_valid, &settings.style);
4722 let font_size = (style.text_scale_factor * settings.style.text.font_size).round();
4723 Flex::column()
4724 .with_children(highlighted_lines.iter().map(|(line, highlights)| {
4725 Label::new(
4726 line.clone(),
4727 style.message.clone().with_font_size(font_size),
4728 )
4729 .with_highlights(highlights.clone())
4730 .contained()
4731 .with_margin_left(cx.anchor_x)
4732 .boxed()
4733 }))
4734 .aligned()
4735 .left()
4736 .boxed()
4737 })
4738}
4739
4740pub fn highlight_diagnostic_message(message: &str) -> (String, Vec<usize>) {
4741 let mut message_without_backticks = String::new();
4742 let mut prev_offset = 0;
4743 let mut inside_block = false;
4744 let mut highlights = Vec::new();
4745 for (match_ix, (offset, _)) in message
4746 .match_indices('`')
4747 .chain([(message.len(), "")])
4748 .enumerate()
4749 {
4750 message_without_backticks.push_str(&message[prev_offset..offset]);
4751 if inside_block {
4752 highlights.extend(prev_offset - match_ix..offset - match_ix);
4753 }
4754
4755 inside_block = !inside_block;
4756 prev_offset = offset + 1;
4757 }
4758
4759 (message_without_backticks, highlights)
4760}
4761
4762pub fn diagnostic_style(
4763 severity: DiagnosticSeverity,
4764 valid: bool,
4765 style: &EditorStyle,
4766) -> DiagnosticStyle {
4767 match (severity, valid) {
4768 (DiagnosticSeverity::ERROR, true) => style.error_diagnostic.clone(),
4769 (DiagnosticSeverity::ERROR, false) => style.invalid_error_diagnostic.clone(),
4770 (DiagnosticSeverity::WARNING, true) => style.warning_diagnostic.clone(),
4771 (DiagnosticSeverity::WARNING, false) => style.invalid_warning_diagnostic.clone(),
4772 (DiagnosticSeverity::INFORMATION, true) => style.information_diagnostic.clone(),
4773 (DiagnosticSeverity::INFORMATION, false) => style.invalid_information_diagnostic.clone(),
4774 (DiagnosticSeverity::HINT, true) => style.hint_diagnostic.clone(),
4775 (DiagnosticSeverity::HINT, false) => style.invalid_hint_diagnostic.clone(),
4776 _ => DiagnosticStyle {
4777 message: style.text.clone().into(),
4778 header: Default::default(),
4779 text_scale_factor: 1.,
4780 },
4781 }
4782}
4783
4784pub fn settings_builder(
4785 buffer: WeakModelHandle<MultiBuffer>,
4786 settings: watch::Receiver<workspace::Settings>,
4787) -> BuildSettings {
4788 Arc::new(move |cx| {
4789 let settings = settings.borrow();
4790 let font_cache = cx.font_cache();
4791 let font_family_id = settings.buffer_font_family;
4792 let font_family_name = cx.font_cache().family_name(font_family_id).unwrap();
4793 let font_properties = Default::default();
4794 let font_id = font_cache
4795 .select_font(font_family_id, &font_properties)
4796 .unwrap();
4797 let font_size = settings.buffer_font_size;
4798
4799 let mut theme = settings.theme.editor.clone();
4800 theme.text = TextStyle {
4801 color: theme.text.color,
4802 font_family_name,
4803 font_family_id,
4804 font_id,
4805 font_size,
4806 font_properties,
4807 underline: None,
4808 };
4809 let language = buffer.upgrade(cx).and_then(|buf| buf.read(cx).language(cx));
4810 let soft_wrap = match settings.soft_wrap(language) {
4811 workspace::settings::SoftWrap::None => SoftWrap::None,
4812 workspace::settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
4813 workspace::settings::SoftWrap::PreferredLineLength => {
4814 SoftWrap::Column(settings.preferred_line_length(language).saturating_sub(1))
4815 }
4816 };
4817
4818 EditorSettings {
4819 tab_size: settings.tab_size,
4820 soft_wrap,
4821 style: theme,
4822 }
4823 })
4824}
4825
4826pub fn combine_syntax_and_fuzzy_match_highlights(
4827 text: &str,
4828 default_style: HighlightStyle,
4829 syntax_ranges: impl Iterator<Item = (Range<usize>, HighlightStyle)>,
4830 match_indices: &[usize],
4831) -> Vec<(Range<usize>, HighlightStyle)> {
4832 let mut result = Vec::new();
4833 let mut match_indices = match_indices.iter().copied().peekable();
4834
4835 for (range, mut syntax_highlight) in syntax_ranges.chain([(usize::MAX..0, Default::default())])
4836 {
4837 syntax_highlight.font_properties.weight(Default::default());
4838
4839 // Add highlights for any fuzzy match characters before the next
4840 // syntax highlight range.
4841 while let Some(&match_index) = match_indices.peek() {
4842 if match_index >= range.start {
4843 break;
4844 }
4845 match_indices.next();
4846 let end_index = char_ix_after(match_index, text);
4847 let mut match_style = default_style;
4848 match_style.font_properties.weight(fonts::Weight::BOLD);
4849 result.push((match_index..end_index, match_style));
4850 }
4851
4852 if range.start == usize::MAX {
4853 break;
4854 }
4855
4856 // Add highlights for any fuzzy match characters within the
4857 // syntax highlight range.
4858 let mut offset = range.start;
4859 while let Some(&match_index) = match_indices.peek() {
4860 if match_index >= range.end {
4861 break;
4862 }
4863
4864 match_indices.next();
4865 if match_index > offset {
4866 result.push((offset..match_index, syntax_highlight));
4867 }
4868
4869 let mut end_index = char_ix_after(match_index, text);
4870 while let Some(&next_match_index) = match_indices.peek() {
4871 if next_match_index == end_index && next_match_index < range.end {
4872 end_index = char_ix_after(next_match_index, text);
4873 match_indices.next();
4874 } else {
4875 break;
4876 }
4877 }
4878
4879 let mut match_style = syntax_highlight;
4880 match_style.font_properties.weight(fonts::Weight::BOLD);
4881 result.push((match_index..end_index, match_style));
4882 offset = end_index;
4883 }
4884
4885 if offset < range.end {
4886 result.push((offset..range.end, syntax_highlight));
4887 }
4888 }
4889
4890 fn char_ix_after(ix: usize, text: &str) -> usize {
4891 ix + text[ix..].chars().next().unwrap().len_utf8()
4892 }
4893
4894 result
4895}
4896
4897fn styled_runs_for_completion_label<'a>(
4898 label: &'a CompletionLabel,
4899 default_color: Color,
4900 syntax_theme: &'a theme::SyntaxTheme,
4901) -> impl 'a + Iterator<Item = (Range<usize>, HighlightStyle)> {
4902 const MUTED_OPACITY: usize = 165;
4903
4904 let mut muted_default_style = HighlightStyle {
4905 color: default_color,
4906 ..Default::default()
4907 };
4908 muted_default_style.color.a = ((default_color.a as usize * MUTED_OPACITY) / 255) as u8;
4909
4910 let mut prev_end = label.filter_range.end;
4911 label
4912 .runs
4913 .iter()
4914 .enumerate()
4915 .flat_map(move |(ix, (range, highlight_id))| {
4916 let style = if let Some(style) = highlight_id.style(syntax_theme) {
4917 style
4918 } else {
4919 return Default::default();
4920 };
4921 let mut muted_style = style.clone();
4922 muted_style.color.a = ((style.color.a as usize * MUTED_OPACITY) / 255) as u8;
4923
4924 let mut runs = SmallVec::<[(Range<usize>, HighlightStyle); 3]>::new();
4925 if range.start >= label.filter_range.end {
4926 if range.start > prev_end {
4927 runs.push((prev_end..range.start, muted_default_style));
4928 }
4929 runs.push((range.clone(), muted_style));
4930 } else if range.end <= label.filter_range.end {
4931 runs.push((range.clone(), style));
4932 } else {
4933 runs.push((range.start..label.filter_range.end, style));
4934 runs.push((label.filter_range.end..range.end, muted_style));
4935 }
4936 prev_end = cmp::max(prev_end, range.end);
4937
4938 if ix + 1 == label.runs.len() && label.text.len() > prev_end {
4939 runs.push((prev_end..label.text.len(), muted_default_style));
4940 }
4941
4942 runs
4943 })
4944}
4945
4946#[cfg(test)]
4947mod tests {
4948 use super::*;
4949 use language::{FakeFile, LanguageConfig};
4950 use lsp::FakeLanguageServer;
4951 use std::{cell::RefCell, path::Path, rc::Rc, time::Instant};
4952 use text::Point;
4953 use unindent::Unindent;
4954 use util::test::sample_text;
4955
4956 #[gpui::test]
4957 fn test_undo_redo_with_selection_restoration(cx: &mut MutableAppContext) {
4958 let mut now = Instant::now();
4959 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
4960 let group_interval = buffer.read(cx).transaction_group_interval();
4961 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
4962 let settings = EditorSettings::test(cx);
4963 let (_, editor) = cx.add_window(Default::default(), |cx| {
4964 build_editor(buffer.clone(), settings, cx)
4965 });
4966
4967 editor.update(cx, |editor, cx| {
4968 editor.start_transaction_at(now, cx);
4969 editor.select_ranges([2..4], None, cx);
4970 editor.insert("cd", cx);
4971 editor.end_transaction_at(now, cx);
4972 assert_eq!(editor.text(cx), "12cd56");
4973 assert_eq!(editor.selected_ranges(cx), vec![4..4]);
4974
4975 editor.start_transaction_at(now, cx);
4976 editor.select_ranges([4..5], None, cx);
4977 editor.insert("e", cx);
4978 editor.end_transaction_at(now, cx);
4979 assert_eq!(editor.text(cx), "12cde6");
4980 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
4981
4982 now += group_interval + Duration::from_millis(1);
4983 editor.select_ranges([2..2], None, cx);
4984
4985 // Simulate an edit in another editor
4986 buffer.update(cx, |buffer, cx| {
4987 buffer.start_transaction_at(now, cx);
4988 buffer.edit([0..1], "a", cx);
4989 buffer.edit([1..1], "b", cx);
4990 buffer.end_transaction_at(now, cx);
4991 });
4992
4993 assert_eq!(editor.text(cx), "ab2cde6");
4994 assert_eq!(editor.selected_ranges(cx), vec![3..3]);
4995
4996 // Last transaction happened past the group interval in a different editor.
4997 // Undo it individually and don't restore selections.
4998 editor.undo(&Undo, cx);
4999 assert_eq!(editor.text(cx), "12cde6");
5000 assert_eq!(editor.selected_ranges(cx), vec![2..2]);
5001
5002 // First two transactions happened within the group interval in this editor.
5003 // Undo them together and restore selections.
5004 editor.undo(&Undo, cx);
5005 editor.undo(&Undo, cx); // Undo stack is empty here, so this is a no-op.
5006 assert_eq!(editor.text(cx), "123456");
5007 assert_eq!(editor.selected_ranges(cx), vec![0..0]);
5008
5009 // Redo the first two transactions together.
5010 editor.redo(&Redo, cx);
5011 assert_eq!(editor.text(cx), "12cde6");
5012 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
5013
5014 // Redo the last transaction on its own.
5015 editor.redo(&Redo, cx);
5016 assert_eq!(editor.text(cx), "ab2cde6");
5017 assert_eq!(editor.selected_ranges(cx), vec![6..6]);
5018
5019 // Test empty transactions.
5020 editor.start_transaction_at(now, cx);
5021 editor.end_transaction_at(now, cx);
5022 editor.undo(&Undo, cx);
5023 assert_eq!(editor.text(cx), "12cde6");
5024 });
5025 }
5026
5027 #[gpui::test]
5028 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
5029 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
5030 let settings = EditorSettings::test(cx);
5031 let (_, editor) =
5032 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5033
5034 editor.update(cx, |view, cx| {
5035 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
5036 });
5037
5038 assert_eq!(
5039 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5040 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
5041 );
5042
5043 editor.update(cx, |view, cx| {
5044 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
5045 });
5046
5047 assert_eq!(
5048 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5049 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
5050 );
5051
5052 editor.update(cx, |view, cx| {
5053 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
5054 });
5055
5056 assert_eq!(
5057 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5058 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
5059 );
5060
5061 editor.update(cx, |view, cx| {
5062 view.end_selection(cx);
5063 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
5064 });
5065
5066 assert_eq!(
5067 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5068 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
5069 );
5070
5071 editor.update(cx, |view, cx| {
5072 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
5073 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
5074 });
5075
5076 assert_eq!(
5077 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5078 [
5079 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
5080 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
5081 ]
5082 );
5083
5084 editor.update(cx, |view, cx| {
5085 view.end_selection(cx);
5086 });
5087
5088 assert_eq!(
5089 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5090 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
5091 );
5092 }
5093
5094 #[gpui::test]
5095 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
5096 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
5097 let settings = EditorSettings::test(cx);
5098 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5099
5100 view.update(cx, |view, cx| {
5101 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
5102 assert_eq!(
5103 view.selected_display_ranges(cx),
5104 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
5105 );
5106 });
5107
5108 view.update(cx, |view, cx| {
5109 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
5110 assert_eq!(
5111 view.selected_display_ranges(cx),
5112 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
5113 );
5114 });
5115
5116 view.update(cx, |view, cx| {
5117 view.cancel(&Cancel, cx);
5118 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
5119 assert_eq!(
5120 view.selected_display_ranges(cx),
5121 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
5122 );
5123 });
5124 }
5125
5126 #[gpui::test]
5127 fn test_navigation_history(cx: &mut gpui::MutableAppContext) {
5128 cx.add_window(Default::default(), |cx| {
5129 use workspace::ItemView;
5130 let nav_history = Rc::new(RefCell::new(workspace::NavHistory::default()));
5131 let settings = EditorSettings::test(&cx);
5132 let buffer = MultiBuffer::build_simple(&sample_text(30, 5, 'a'), cx);
5133 let mut editor = build_editor(buffer.clone(), settings, cx);
5134 editor.nav_history = Some(ItemNavHistory::new(nav_history.clone(), &cx.handle()));
5135
5136 // Move the cursor a small distance.
5137 // Nothing is added to the navigation history.
5138 editor.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
5139 editor.select_display_ranges(&[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)], cx);
5140 assert!(nav_history.borrow_mut().pop_backward().is_none());
5141
5142 // Move the cursor a large distance.
5143 // The history can jump back to the previous position.
5144 editor.select_display_ranges(&[DisplayPoint::new(13, 0)..DisplayPoint::new(13, 3)], cx);
5145 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
5146 editor.navigate(nav_entry.data.unwrap(), cx);
5147 assert_eq!(nav_entry.item_view.id(), cx.view_id());
5148 assert_eq!(
5149 editor.selected_display_ranges(cx),
5150 &[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)]
5151 );
5152
5153 // Move the cursor a small distance via the mouse.
5154 // Nothing is added to the navigation history.
5155 editor.begin_selection(DisplayPoint::new(5, 0), false, 1, cx);
5156 editor.end_selection(cx);
5157 assert_eq!(
5158 editor.selected_display_ranges(cx),
5159 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
5160 );
5161 assert!(nav_history.borrow_mut().pop_backward().is_none());
5162
5163 // Move the cursor a large distance via the mouse.
5164 // The history can jump back to the previous position.
5165 editor.begin_selection(DisplayPoint::new(15, 0), false, 1, cx);
5166 editor.end_selection(cx);
5167 assert_eq!(
5168 editor.selected_display_ranges(cx),
5169 &[DisplayPoint::new(15, 0)..DisplayPoint::new(15, 0)]
5170 );
5171 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
5172 editor.navigate(nav_entry.data.unwrap(), cx);
5173 assert_eq!(nav_entry.item_view.id(), cx.view_id());
5174 assert_eq!(
5175 editor.selected_display_ranges(cx),
5176 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
5177 );
5178
5179 editor
5180 });
5181 }
5182
5183 #[gpui::test]
5184 fn test_cancel(cx: &mut gpui::MutableAppContext) {
5185 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
5186 let settings = EditorSettings::test(cx);
5187 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5188
5189 view.update(cx, |view, cx| {
5190 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
5191 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
5192 view.end_selection(cx);
5193
5194 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
5195 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
5196 view.end_selection(cx);
5197 assert_eq!(
5198 view.selected_display_ranges(cx),
5199 [
5200 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5201 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
5202 ]
5203 );
5204 });
5205
5206 view.update(cx, |view, cx| {
5207 view.cancel(&Cancel, cx);
5208 assert_eq!(
5209 view.selected_display_ranges(cx),
5210 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
5211 );
5212 });
5213
5214 view.update(cx, |view, cx| {
5215 view.cancel(&Cancel, cx);
5216 assert_eq!(
5217 view.selected_display_ranges(cx),
5218 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
5219 );
5220 });
5221 }
5222
5223 #[gpui::test]
5224 fn test_fold(cx: &mut gpui::MutableAppContext) {
5225 let buffer = MultiBuffer::build_simple(
5226 &"
5227 impl Foo {
5228 // Hello!
5229
5230 fn a() {
5231 1
5232 }
5233
5234 fn b() {
5235 2
5236 }
5237
5238 fn c() {
5239 3
5240 }
5241 }
5242 "
5243 .unindent(),
5244 cx,
5245 );
5246 let settings = EditorSettings::test(&cx);
5247 let (_, view) = cx.add_window(Default::default(), |cx| {
5248 build_editor(buffer.clone(), settings, cx)
5249 });
5250
5251 view.update(cx, |view, cx| {
5252 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx);
5253 view.fold(&Fold, cx);
5254 assert_eq!(
5255 view.display_text(cx),
5256 "
5257 impl Foo {
5258 // Hello!
5259
5260 fn a() {
5261 1
5262 }
5263
5264 fn b() {…
5265 }
5266
5267 fn c() {…
5268 }
5269 }
5270 "
5271 .unindent(),
5272 );
5273
5274 view.fold(&Fold, cx);
5275 assert_eq!(
5276 view.display_text(cx),
5277 "
5278 impl Foo {…
5279 }
5280 "
5281 .unindent(),
5282 );
5283
5284 view.unfold(&Unfold, cx);
5285 assert_eq!(
5286 view.display_text(cx),
5287 "
5288 impl Foo {
5289 // Hello!
5290
5291 fn a() {
5292 1
5293 }
5294
5295 fn b() {…
5296 }
5297
5298 fn c() {…
5299 }
5300 }
5301 "
5302 .unindent(),
5303 );
5304
5305 view.unfold(&Unfold, cx);
5306 assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text());
5307 });
5308 }
5309
5310 #[gpui::test]
5311 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
5312 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
5313 let settings = EditorSettings::test(&cx);
5314 let (_, view) = cx.add_window(Default::default(), |cx| {
5315 build_editor(buffer.clone(), settings, cx)
5316 });
5317
5318 buffer.update(cx, |buffer, cx| {
5319 buffer.edit(
5320 vec![
5321 Point::new(1, 0)..Point::new(1, 0),
5322 Point::new(1, 1)..Point::new(1, 1),
5323 ],
5324 "\t",
5325 cx,
5326 );
5327 });
5328
5329 view.update(cx, |view, cx| {
5330 assert_eq!(
5331 view.selected_display_ranges(cx),
5332 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
5333 );
5334
5335 view.move_down(&MoveDown, cx);
5336 assert_eq!(
5337 view.selected_display_ranges(cx),
5338 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
5339 );
5340
5341 view.move_right(&MoveRight, cx);
5342 assert_eq!(
5343 view.selected_display_ranges(cx),
5344 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
5345 );
5346
5347 view.move_left(&MoveLeft, cx);
5348 assert_eq!(
5349 view.selected_display_ranges(cx),
5350 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
5351 );
5352
5353 view.move_up(&MoveUp, cx);
5354 assert_eq!(
5355 view.selected_display_ranges(cx),
5356 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
5357 );
5358
5359 view.move_to_end(&MoveToEnd, cx);
5360 assert_eq!(
5361 view.selected_display_ranges(cx),
5362 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
5363 );
5364
5365 view.move_to_beginning(&MoveToBeginning, cx);
5366 assert_eq!(
5367 view.selected_display_ranges(cx),
5368 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
5369 );
5370
5371 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx);
5372 view.select_to_beginning(&SelectToBeginning, cx);
5373 assert_eq!(
5374 view.selected_display_ranges(cx),
5375 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
5376 );
5377
5378 view.select_to_end(&SelectToEnd, cx);
5379 assert_eq!(
5380 view.selected_display_ranges(cx),
5381 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
5382 );
5383 });
5384 }
5385
5386 #[gpui::test]
5387 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
5388 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
5389 let settings = EditorSettings::test(&cx);
5390 let (_, view) = cx.add_window(Default::default(), |cx| {
5391 build_editor(buffer.clone(), settings, cx)
5392 });
5393
5394 assert_eq!('ⓐ'.len_utf8(), 3);
5395 assert_eq!('α'.len_utf8(), 2);
5396
5397 view.update(cx, |view, cx| {
5398 view.fold_ranges(
5399 vec![
5400 Point::new(0, 6)..Point::new(0, 12),
5401 Point::new(1, 2)..Point::new(1, 4),
5402 Point::new(2, 4)..Point::new(2, 8),
5403 ],
5404 cx,
5405 );
5406 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
5407
5408 view.move_right(&MoveRight, cx);
5409 assert_eq!(
5410 view.selected_display_ranges(cx),
5411 &[empty_range(0, "ⓐ".len())]
5412 );
5413 view.move_right(&MoveRight, cx);
5414 assert_eq!(
5415 view.selected_display_ranges(cx),
5416 &[empty_range(0, "ⓐⓑ".len())]
5417 );
5418 view.move_right(&MoveRight, cx);
5419 assert_eq!(
5420 view.selected_display_ranges(cx),
5421 &[empty_range(0, "ⓐⓑ…".len())]
5422 );
5423
5424 view.move_down(&MoveDown, cx);
5425 assert_eq!(
5426 view.selected_display_ranges(cx),
5427 &[empty_range(1, "ab…".len())]
5428 );
5429 view.move_left(&MoveLeft, cx);
5430 assert_eq!(
5431 view.selected_display_ranges(cx),
5432 &[empty_range(1, "ab".len())]
5433 );
5434 view.move_left(&MoveLeft, cx);
5435 assert_eq!(
5436 view.selected_display_ranges(cx),
5437 &[empty_range(1, "a".len())]
5438 );
5439
5440 view.move_down(&MoveDown, cx);
5441 assert_eq!(
5442 view.selected_display_ranges(cx),
5443 &[empty_range(2, "α".len())]
5444 );
5445 view.move_right(&MoveRight, cx);
5446 assert_eq!(
5447 view.selected_display_ranges(cx),
5448 &[empty_range(2, "αβ".len())]
5449 );
5450 view.move_right(&MoveRight, cx);
5451 assert_eq!(
5452 view.selected_display_ranges(cx),
5453 &[empty_range(2, "αβ…".len())]
5454 );
5455 view.move_right(&MoveRight, cx);
5456 assert_eq!(
5457 view.selected_display_ranges(cx),
5458 &[empty_range(2, "αβ…ε".len())]
5459 );
5460
5461 view.move_up(&MoveUp, cx);
5462 assert_eq!(
5463 view.selected_display_ranges(cx),
5464 &[empty_range(1, "ab…e".len())]
5465 );
5466 view.move_up(&MoveUp, cx);
5467 assert_eq!(
5468 view.selected_display_ranges(cx),
5469 &[empty_range(0, "ⓐⓑ…ⓔ".len())]
5470 );
5471 view.move_left(&MoveLeft, cx);
5472 assert_eq!(
5473 view.selected_display_ranges(cx),
5474 &[empty_range(0, "ⓐⓑ…".len())]
5475 );
5476 view.move_left(&MoveLeft, cx);
5477 assert_eq!(
5478 view.selected_display_ranges(cx),
5479 &[empty_range(0, "ⓐⓑ".len())]
5480 );
5481 view.move_left(&MoveLeft, cx);
5482 assert_eq!(
5483 view.selected_display_ranges(cx),
5484 &[empty_range(0, "ⓐ".len())]
5485 );
5486 });
5487 }
5488
5489 #[gpui::test]
5490 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
5491 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
5492 let settings = EditorSettings::test(&cx);
5493 let (_, view) = cx.add_window(Default::default(), |cx| {
5494 build_editor(buffer.clone(), settings, cx)
5495 });
5496 view.update(cx, |view, cx| {
5497 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx);
5498 view.move_down(&MoveDown, cx);
5499 assert_eq!(
5500 view.selected_display_ranges(cx),
5501 &[empty_range(1, "abcd".len())]
5502 );
5503
5504 view.move_down(&MoveDown, cx);
5505 assert_eq!(
5506 view.selected_display_ranges(cx),
5507 &[empty_range(2, "αβγ".len())]
5508 );
5509
5510 view.move_down(&MoveDown, cx);
5511 assert_eq!(
5512 view.selected_display_ranges(cx),
5513 &[empty_range(3, "abcd".len())]
5514 );
5515
5516 view.move_down(&MoveDown, cx);
5517 assert_eq!(
5518 view.selected_display_ranges(cx),
5519 &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
5520 );
5521
5522 view.move_up(&MoveUp, cx);
5523 assert_eq!(
5524 view.selected_display_ranges(cx),
5525 &[empty_range(3, "abcd".len())]
5526 );
5527
5528 view.move_up(&MoveUp, cx);
5529 assert_eq!(
5530 view.selected_display_ranges(cx),
5531 &[empty_range(2, "αβγ".len())]
5532 );
5533 });
5534 }
5535
5536 #[gpui::test]
5537 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
5538 let buffer = MultiBuffer::build_simple("abc\n def", cx);
5539 let settings = EditorSettings::test(&cx);
5540 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5541 view.update(cx, |view, cx| {
5542 view.select_display_ranges(
5543 &[
5544 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5545 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
5546 ],
5547 cx,
5548 );
5549 });
5550
5551 view.update(cx, |view, cx| {
5552 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
5553 assert_eq!(
5554 view.selected_display_ranges(cx),
5555 &[
5556 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5557 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5558 ]
5559 );
5560 });
5561
5562 view.update(cx, |view, cx| {
5563 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
5564 assert_eq!(
5565 view.selected_display_ranges(cx),
5566 &[
5567 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5568 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5569 ]
5570 );
5571 });
5572
5573 view.update(cx, |view, cx| {
5574 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
5575 assert_eq!(
5576 view.selected_display_ranges(cx),
5577 &[
5578 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5579 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5580 ]
5581 );
5582 });
5583
5584 view.update(cx, |view, cx| {
5585 view.move_to_end_of_line(&MoveToEndOfLine, cx);
5586 assert_eq!(
5587 view.selected_display_ranges(cx),
5588 &[
5589 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5590 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
5591 ]
5592 );
5593 });
5594
5595 // Moving to the end of line again is a no-op.
5596 view.update(cx, |view, cx| {
5597 view.move_to_end_of_line(&MoveToEndOfLine, cx);
5598 assert_eq!(
5599 view.selected_display_ranges(cx),
5600 &[
5601 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5602 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
5603 ]
5604 );
5605 });
5606
5607 view.update(cx, |view, cx| {
5608 view.move_left(&MoveLeft, cx);
5609 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
5610 assert_eq!(
5611 view.selected_display_ranges(cx),
5612 &[
5613 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
5614 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
5615 ]
5616 );
5617 });
5618
5619 view.update(cx, |view, cx| {
5620 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
5621 assert_eq!(
5622 view.selected_display_ranges(cx),
5623 &[
5624 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
5625 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
5626 ]
5627 );
5628 });
5629
5630 view.update(cx, |view, cx| {
5631 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
5632 assert_eq!(
5633 view.selected_display_ranges(cx),
5634 &[
5635 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
5636 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
5637 ]
5638 );
5639 });
5640
5641 view.update(cx, |view, cx| {
5642 view.select_to_end_of_line(&SelectToEndOfLine, cx);
5643 assert_eq!(
5644 view.selected_display_ranges(cx),
5645 &[
5646 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
5647 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
5648 ]
5649 );
5650 });
5651
5652 view.update(cx, |view, cx| {
5653 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
5654 assert_eq!(view.display_text(cx), "ab\n de");
5655 assert_eq!(
5656 view.selected_display_ranges(cx),
5657 &[
5658 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5659 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
5660 ]
5661 );
5662 });
5663
5664 view.update(cx, |view, cx| {
5665 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
5666 assert_eq!(view.display_text(cx), "\n");
5667 assert_eq!(
5668 view.selected_display_ranges(cx),
5669 &[
5670 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5671 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5672 ]
5673 );
5674 });
5675 }
5676
5677 #[gpui::test]
5678 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
5679 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
5680 let settings = EditorSettings::test(&cx);
5681 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5682 view.update(cx, |view, cx| {
5683 view.select_display_ranges(
5684 &[
5685 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
5686 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
5687 ],
5688 cx,
5689 );
5690 });
5691
5692 view.update(cx, |view, cx| {
5693 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5694 assert_eq!(
5695 view.selected_display_ranges(cx),
5696 &[
5697 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
5698 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
5699 ]
5700 );
5701 });
5702
5703 view.update(cx, |view, cx| {
5704 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5705 assert_eq!(
5706 view.selected_display_ranges(cx),
5707 &[
5708 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
5709 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2),
5710 ]
5711 );
5712 });
5713
5714 view.update(cx, |view, cx| {
5715 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5716 assert_eq!(
5717 view.selected_display_ranges(cx),
5718 &[
5719 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
5720 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
5721 ]
5722 );
5723 });
5724
5725 view.update(cx, |view, cx| {
5726 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5727 assert_eq!(
5728 view.selected_display_ranges(cx),
5729 &[
5730 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5731 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5732 ]
5733 );
5734 });
5735
5736 view.update(cx, |view, cx| {
5737 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5738 assert_eq!(
5739 view.selected_display_ranges(cx),
5740 &[
5741 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5742 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 23),
5743 ]
5744 );
5745 });
5746
5747 view.update(cx, |view, cx| {
5748 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5749 assert_eq!(
5750 view.selected_display_ranges(cx),
5751 &[
5752 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5753 DisplayPoint::new(0, 24)..DisplayPoint::new(0, 24),
5754 ]
5755 );
5756 });
5757
5758 view.update(cx, |view, cx| {
5759 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5760 assert_eq!(
5761 view.selected_display_ranges(cx),
5762 &[
5763 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
5764 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5765 ]
5766 );
5767 });
5768
5769 view.update(cx, |view, cx| {
5770 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5771 assert_eq!(
5772 view.selected_display_ranges(cx),
5773 &[
5774 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
5775 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
5776 ]
5777 );
5778 });
5779
5780 view.update(cx, |view, cx| {
5781 view.move_right(&MoveRight, cx);
5782 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
5783 assert_eq!(
5784 view.selected_display_ranges(cx),
5785 &[
5786 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
5787 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
5788 ]
5789 );
5790 });
5791
5792 view.update(cx, |view, cx| {
5793 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
5794 assert_eq!(
5795 view.selected_display_ranges(cx),
5796 &[
5797 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 7),
5798 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 2),
5799 ]
5800 );
5801 });
5802
5803 view.update(cx, |view, cx| {
5804 view.select_to_next_word_boundary(&SelectToNextWordBoundary, cx);
5805 assert_eq!(
5806 view.selected_display_ranges(cx),
5807 &[
5808 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
5809 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
5810 ]
5811 );
5812 });
5813 }
5814
5815 #[gpui::test]
5816 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
5817 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
5818 let settings = EditorSettings::test(&cx);
5819 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5820
5821 view.update(cx, |view, cx| {
5822 view.set_wrap_width(Some(140.), cx);
5823 assert_eq!(
5824 view.display_text(cx),
5825 "use one::{\n two::three::\n four::five\n};"
5826 );
5827
5828 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx);
5829
5830 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5831 assert_eq!(
5832 view.selected_display_ranges(cx),
5833 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
5834 );
5835
5836 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5837 assert_eq!(
5838 view.selected_display_ranges(cx),
5839 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
5840 );
5841
5842 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5843 assert_eq!(
5844 view.selected_display_ranges(cx),
5845 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
5846 );
5847
5848 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5849 assert_eq!(
5850 view.selected_display_ranges(cx),
5851 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
5852 );
5853
5854 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5855 assert_eq!(
5856 view.selected_display_ranges(cx),
5857 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
5858 );
5859
5860 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5861 assert_eq!(
5862 view.selected_display_ranges(cx),
5863 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
5864 );
5865 });
5866 }
5867
5868 #[gpui::test]
5869 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
5870 let buffer = MultiBuffer::build_simple("one two three four", cx);
5871 let settings = EditorSettings::test(&cx);
5872 let (_, view) = cx.add_window(Default::default(), |cx| {
5873 build_editor(buffer.clone(), settings, cx)
5874 });
5875
5876 view.update(cx, |view, cx| {
5877 view.select_display_ranges(
5878 &[
5879 // an empty selection - the preceding word fragment is deleted
5880 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5881 // characters selected - they are deleted
5882 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
5883 ],
5884 cx,
5885 );
5886 view.delete_to_previous_word_boundary(&DeleteToPreviousWordBoundary, cx);
5887 });
5888
5889 assert_eq!(buffer.read(cx).read(cx).text(), "e two te four");
5890
5891 view.update(cx, |view, cx| {
5892 view.select_display_ranges(
5893 &[
5894 // an empty selection - the following word fragment is deleted
5895 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5896 // characters selected - they are deleted
5897 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
5898 ],
5899 cx,
5900 );
5901 view.delete_to_next_word_boundary(&DeleteToNextWordBoundary, cx);
5902 });
5903
5904 assert_eq!(buffer.read(cx).read(cx).text(), "e t te our");
5905 }
5906
5907 #[gpui::test]
5908 fn test_newline(cx: &mut gpui::MutableAppContext) {
5909 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
5910 let settings = EditorSettings::test(&cx);
5911 let (_, view) = cx.add_window(Default::default(), |cx| {
5912 build_editor(buffer.clone(), settings, cx)
5913 });
5914
5915 view.update(cx, |view, cx| {
5916 view.select_display_ranges(
5917 &[
5918 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5919 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5920 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
5921 ],
5922 cx,
5923 );
5924
5925 view.newline(&Newline, cx);
5926 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
5927 });
5928 }
5929
5930 #[gpui::test]
5931 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
5932 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
5933 let settings = EditorSettings::test(&cx);
5934 let (_, view) = cx.add_window(Default::default(), |cx| {
5935 build_editor(buffer.clone(), settings, cx)
5936 });
5937
5938 view.update(cx, |view, cx| {
5939 // two selections on the same line
5940 view.select_display_ranges(
5941 &[
5942 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
5943 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
5944 ],
5945 cx,
5946 );
5947
5948 // indent from mid-tabstop to full tabstop
5949 view.tab(&Tab, cx);
5950 assert_eq!(view.text(cx), " one two\nthree\n four");
5951 assert_eq!(
5952 view.selected_display_ranges(cx),
5953 &[
5954 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
5955 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
5956 ]
5957 );
5958
5959 // outdent from 1 tabstop to 0 tabstops
5960 view.outdent(&Outdent, cx);
5961 assert_eq!(view.text(cx), "one two\nthree\n four");
5962 assert_eq!(
5963 view.selected_display_ranges(cx),
5964 &[
5965 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
5966 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
5967 ]
5968 );
5969
5970 // select across line ending
5971 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx);
5972
5973 // indent and outdent affect only the preceding line
5974 view.tab(&Tab, cx);
5975 assert_eq!(view.text(cx), "one two\n three\n four");
5976 assert_eq!(
5977 view.selected_display_ranges(cx),
5978 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
5979 );
5980 view.outdent(&Outdent, cx);
5981 assert_eq!(view.text(cx), "one two\nthree\n four");
5982 assert_eq!(
5983 view.selected_display_ranges(cx),
5984 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
5985 );
5986
5987 // Ensure that indenting/outdenting works when the cursor is at column 0.
5988 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
5989 view.tab(&Tab, cx);
5990 assert_eq!(view.text(cx), "one two\n three\n four");
5991 assert_eq!(
5992 view.selected_display_ranges(cx),
5993 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
5994 );
5995
5996 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
5997 view.outdent(&Outdent, cx);
5998 assert_eq!(view.text(cx), "one two\nthree\n four");
5999 assert_eq!(
6000 view.selected_display_ranges(cx),
6001 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6002 );
6003 });
6004 }
6005
6006 #[gpui::test]
6007 fn test_backspace(cx: &mut gpui::MutableAppContext) {
6008 let buffer =
6009 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
6010 let settings = EditorSettings::test(&cx);
6011 let (_, view) = cx.add_window(Default::default(), |cx| {
6012 build_editor(buffer.clone(), settings, cx)
6013 });
6014
6015 view.update(cx, |view, cx| {
6016 view.select_display_ranges(
6017 &[
6018 // an empty selection - the preceding character is deleted
6019 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6020 // one character selected - it is deleted
6021 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
6022 // a line suffix selected - it is deleted
6023 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
6024 ],
6025 cx,
6026 );
6027 view.backspace(&Backspace, cx);
6028 });
6029
6030 assert_eq!(
6031 buffer.read(cx).read(cx).text(),
6032 "oe two three\nfou five six\nseven ten\n"
6033 );
6034 }
6035
6036 #[gpui::test]
6037 fn test_delete(cx: &mut gpui::MutableAppContext) {
6038 let buffer =
6039 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
6040 let settings = EditorSettings::test(&cx);
6041 let (_, view) = cx.add_window(Default::default(), |cx| {
6042 build_editor(buffer.clone(), settings, cx)
6043 });
6044
6045 view.update(cx, |view, cx| {
6046 view.select_display_ranges(
6047 &[
6048 // an empty selection - the following character is deleted
6049 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6050 // one character selected - it is deleted
6051 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
6052 // a line suffix selected - it is deleted
6053 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
6054 ],
6055 cx,
6056 );
6057 view.delete(&Delete, cx);
6058 });
6059
6060 assert_eq!(
6061 buffer.read(cx).read(cx).text(),
6062 "on two three\nfou five six\nseven ten\n"
6063 );
6064 }
6065
6066 #[gpui::test]
6067 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
6068 let settings = EditorSettings::test(&cx);
6069 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
6070 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6071 view.update(cx, |view, cx| {
6072 view.select_display_ranges(
6073 &[
6074 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6075 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
6076 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6077 ],
6078 cx,
6079 );
6080 view.delete_line(&DeleteLine, cx);
6081 assert_eq!(view.display_text(cx), "ghi");
6082 assert_eq!(
6083 view.selected_display_ranges(cx),
6084 vec![
6085 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6086 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
6087 ]
6088 );
6089 });
6090
6091 let settings = EditorSettings::test(&cx);
6092 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
6093 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6094 view.update(cx, |view, cx| {
6095 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx);
6096 view.delete_line(&DeleteLine, cx);
6097 assert_eq!(view.display_text(cx), "ghi\n");
6098 assert_eq!(
6099 view.selected_display_ranges(cx),
6100 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
6101 );
6102 });
6103 }
6104
6105 #[gpui::test]
6106 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
6107 let settings = EditorSettings::test(&cx);
6108 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
6109 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6110 view.update(cx, |view, cx| {
6111 view.select_display_ranges(
6112 &[
6113 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
6114 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6115 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6116 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6117 ],
6118 cx,
6119 );
6120 view.duplicate_line(&DuplicateLine, cx);
6121 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
6122 assert_eq!(
6123 view.selected_display_ranges(cx),
6124 vec![
6125 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
6126 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6127 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6128 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
6129 ]
6130 );
6131 });
6132
6133 let settings = EditorSettings::test(&cx);
6134 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
6135 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6136 view.update(cx, |view, cx| {
6137 view.select_display_ranges(
6138 &[
6139 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
6140 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
6141 ],
6142 cx,
6143 );
6144 view.duplicate_line(&DuplicateLine, cx);
6145 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
6146 assert_eq!(
6147 view.selected_display_ranges(cx),
6148 vec![
6149 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
6150 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
6151 ]
6152 );
6153 });
6154 }
6155
6156 #[gpui::test]
6157 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
6158 let settings = EditorSettings::test(&cx);
6159 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
6160 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6161 view.update(cx, |view, cx| {
6162 view.fold_ranges(
6163 vec![
6164 Point::new(0, 2)..Point::new(1, 2),
6165 Point::new(2, 3)..Point::new(4, 1),
6166 Point::new(7, 0)..Point::new(8, 4),
6167 ],
6168 cx,
6169 );
6170 view.select_display_ranges(
6171 &[
6172 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6173 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
6174 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
6175 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
6176 ],
6177 cx,
6178 );
6179 assert_eq!(
6180 view.display_text(cx),
6181 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
6182 );
6183
6184 view.move_line_up(&MoveLineUp, cx);
6185 assert_eq!(
6186 view.display_text(cx),
6187 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
6188 );
6189 assert_eq!(
6190 view.selected_display_ranges(cx),
6191 vec![
6192 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6193 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6194 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
6195 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
6196 ]
6197 );
6198 });
6199
6200 view.update(cx, |view, cx| {
6201 view.move_line_down(&MoveLineDown, cx);
6202 assert_eq!(
6203 view.display_text(cx),
6204 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
6205 );
6206 assert_eq!(
6207 view.selected_display_ranges(cx),
6208 vec![
6209 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6210 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
6211 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
6212 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
6213 ]
6214 );
6215 });
6216
6217 view.update(cx, |view, cx| {
6218 view.move_line_down(&MoveLineDown, cx);
6219 assert_eq!(
6220 view.display_text(cx),
6221 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
6222 );
6223 assert_eq!(
6224 view.selected_display_ranges(cx),
6225 vec![
6226 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6227 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
6228 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
6229 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
6230 ]
6231 );
6232 });
6233
6234 view.update(cx, |view, cx| {
6235 view.move_line_up(&MoveLineUp, cx);
6236 assert_eq!(
6237 view.display_text(cx),
6238 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
6239 );
6240 assert_eq!(
6241 view.selected_display_ranges(cx),
6242 vec![
6243 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6244 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6245 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
6246 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
6247 ]
6248 );
6249 });
6250 }
6251
6252 #[gpui::test]
6253 fn test_move_line_up_down_with_blocks(cx: &mut gpui::MutableAppContext) {
6254 let settings = EditorSettings::test(&cx);
6255 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
6256 let snapshot = buffer.read(cx).snapshot(cx);
6257 let (_, editor) =
6258 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6259 editor.update(cx, |editor, cx| {
6260 editor.insert_blocks(
6261 [BlockProperties {
6262 position: snapshot.anchor_after(Point::new(2, 0)),
6263 disposition: BlockDisposition::Below,
6264 height: 1,
6265 render: Arc::new(|_| Empty::new().boxed()),
6266 }],
6267 cx,
6268 );
6269 editor.select_ranges([Point::new(2, 0)..Point::new(2, 0)], None, cx);
6270 editor.move_line_down(&MoveLineDown, cx);
6271 });
6272 }
6273
6274 #[gpui::test]
6275 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
6276 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
6277 let settings = EditorSettings::test(&cx);
6278 let view = cx
6279 .add_window(Default::default(), |cx| {
6280 build_editor(buffer.clone(), settings, cx)
6281 })
6282 .1;
6283
6284 // Cut with three selections. Clipboard text is divided into three slices.
6285 view.update(cx, |view, cx| {
6286 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
6287 view.cut(&Cut, cx);
6288 assert_eq!(view.display_text(cx), "two four six ");
6289 });
6290
6291 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
6292 view.update(cx, |view, cx| {
6293 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
6294 view.paste(&Paste, cx);
6295 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
6296 assert_eq!(
6297 view.selected_display_ranges(cx),
6298 &[
6299 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
6300 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
6301 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
6302 ]
6303 );
6304 });
6305
6306 // Paste again but with only two cursors. Since the number of cursors doesn't
6307 // match the number of slices in the clipboard, the entire clipboard text
6308 // is pasted at each cursor.
6309 view.update(cx, |view, cx| {
6310 view.select_ranges(vec![0..0, 31..31], None, cx);
6311 view.handle_input(&Input("( ".into()), cx);
6312 view.paste(&Paste, cx);
6313 view.handle_input(&Input(") ".into()), cx);
6314 assert_eq!(
6315 view.display_text(cx),
6316 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
6317 );
6318 });
6319
6320 view.update(cx, |view, cx| {
6321 view.select_ranges(vec![0..0], None, cx);
6322 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
6323 assert_eq!(
6324 view.display_text(cx),
6325 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
6326 );
6327 });
6328
6329 // Cut with three selections, one of which is full-line.
6330 view.update(cx, |view, cx| {
6331 view.select_display_ranges(
6332 &[
6333 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
6334 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6335 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
6336 ],
6337 cx,
6338 );
6339 view.cut(&Cut, cx);
6340 assert_eq!(
6341 view.display_text(cx),
6342 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
6343 );
6344 });
6345
6346 // Paste with three selections, noticing how the copied selection that was full-line
6347 // gets inserted before the second cursor.
6348 view.update(cx, |view, cx| {
6349 view.select_display_ranges(
6350 &[
6351 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6352 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6353 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
6354 ],
6355 cx,
6356 );
6357 view.paste(&Paste, cx);
6358 assert_eq!(
6359 view.display_text(cx),
6360 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
6361 );
6362 assert_eq!(
6363 view.selected_display_ranges(cx),
6364 &[
6365 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6366 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6367 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
6368 ]
6369 );
6370 });
6371
6372 // Copy with a single cursor only, which writes the whole line into the clipboard.
6373 view.update(cx, |view, cx| {
6374 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx);
6375 view.copy(&Copy, cx);
6376 });
6377
6378 // Paste with three selections, noticing how the copied full-line selection is inserted
6379 // before the empty selections but replaces the selection that is non-empty.
6380 view.update(cx, |view, cx| {
6381 view.select_display_ranges(
6382 &[
6383 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6384 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
6385 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6386 ],
6387 cx,
6388 );
6389 view.paste(&Paste, cx);
6390 assert_eq!(
6391 view.display_text(cx),
6392 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
6393 );
6394 assert_eq!(
6395 view.selected_display_ranges(cx),
6396 &[
6397 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6398 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6399 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
6400 ]
6401 );
6402 });
6403 }
6404
6405 #[gpui::test]
6406 fn test_select_all(cx: &mut gpui::MutableAppContext) {
6407 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
6408 let settings = EditorSettings::test(&cx);
6409 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6410 view.update(cx, |view, cx| {
6411 view.select_all(&SelectAll, cx);
6412 assert_eq!(
6413 view.selected_display_ranges(cx),
6414 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
6415 );
6416 });
6417 }
6418
6419 #[gpui::test]
6420 fn test_select_line(cx: &mut gpui::MutableAppContext) {
6421 let settings = EditorSettings::test(&cx);
6422 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
6423 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6424 view.update(cx, |view, cx| {
6425 view.select_display_ranges(
6426 &[
6427 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
6428 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6429 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6430 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
6431 ],
6432 cx,
6433 );
6434 view.select_line(&SelectLine, cx);
6435 assert_eq!(
6436 view.selected_display_ranges(cx),
6437 vec![
6438 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
6439 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
6440 ]
6441 );
6442 });
6443
6444 view.update(cx, |view, cx| {
6445 view.select_line(&SelectLine, cx);
6446 assert_eq!(
6447 view.selected_display_ranges(cx),
6448 vec![
6449 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
6450 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
6451 ]
6452 );
6453 });
6454
6455 view.update(cx, |view, cx| {
6456 view.select_line(&SelectLine, cx);
6457 assert_eq!(
6458 view.selected_display_ranges(cx),
6459 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
6460 );
6461 });
6462 }
6463
6464 #[gpui::test]
6465 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
6466 let settings = EditorSettings::test(&cx);
6467 let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
6468 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6469 view.update(cx, |view, cx| {
6470 view.fold_ranges(
6471 vec![
6472 Point::new(0, 2)..Point::new(1, 2),
6473 Point::new(2, 3)..Point::new(4, 1),
6474 Point::new(7, 0)..Point::new(8, 4),
6475 ],
6476 cx,
6477 );
6478 view.select_display_ranges(
6479 &[
6480 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
6481 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6482 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6483 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
6484 ],
6485 cx,
6486 );
6487 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
6488 });
6489
6490 view.update(cx, |view, cx| {
6491 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
6492 assert_eq!(
6493 view.display_text(cx),
6494 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
6495 );
6496 assert_eq!(
6497 view.selected_display_ranges(cx),
6498 [
6499 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6500 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6501 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
6502 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
6503 ]
6504 );
6505 });
6506
6507 view.update(cx, |view, cx| {
6508 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx);
6509 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
6510 assert_eq!(
6511 view.display_text(cx),
6512 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
6513 );
6514 assert_eq!(
6515 view.selected_display_ranges(cx),
6516 [
6517 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
6518 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6519 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
6520 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
6521 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
6522 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
6523 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
6524 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
6525 ]
6526 );
6527 });
6528 }
6529
6530 #[gpui::test]
6531 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
6532 let settings = EditorSettings::test(&cx);
6533 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
6534 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6535
6536 view.update(cx, |view, cx| {
6537 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx);
6538 });
6539 view.update(cx, |view, cx| {
6540 view.add_selection_above(&AddSelectionAbove, cx);
6541 assert_eq!(
6542 view.selected_display_ranges(cx),
6543 vec![
6544 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6545 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
6546 ]
6547 );
6548 });
6549
6550 view.update(cx, |view, cx| {
6551 view.add_selection_above(&AddSelectionAbove, cx);
6552 assert_eq!(
6553 view.selected_display_ranges(cx),
6554 vec![
6555 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6556 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
6557 ]
6558 );
6559 });
6560
6561 view.update(cx, |view, cx| {
6562 view.add_selection_below(&AddSelectionBelow, cx);
6563 assert_eq!(
6564 view.selected_display_ranges(cx),
6565 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
6566 );
6567 });
6568
6569 view.update(cx, |view, cx| {
6570 view.add_selection_below(&AddSelectionBelow, cx);
6571 assert_eq!(
6572 view.selected_display_ranges(cx),
6573 vec![
6574 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
6575 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
6576 ]
6577 );
6578 });
6579
6580 view.update(cx, |view, cx| {
6581 view.add_selection_below(&AddSelectionBelow, cx);
6582 assert_eq!(
6583 view.selected_display_ranges(cx),
6584 vec![
6585 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
6586 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
6587 ]
6588 );
6589 });
6590
6591 view.update(cx, |view, cx| {
6592 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx);
6593 });
6594 view.update(cx, |view, cx| {
6595 view.add_selection_below(&AddSelectionBelow, cx);
6596 assert_eq!(
6597 view.selected_display_ranges(cx),
6598 vec![
6599 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
6600 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
6601 ]
6602 );
6603 });
6604
6605 view.update(cx, |view, cx| {
6606 view.add_selection_below(&AddSelectionBelow, cx);
6607 assert_eq!(
6608 view.selected_display_ranges(cx),
6609 vec![
6610 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
6611 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
6612 ]
6613 );
6614 });
6615
6616 view.update(cx, |view, cx| {
6617 view.add_selection_above(&AddSelectionAbove, cx);
6618 assert_eq!(
6619 view.selected_display_ranges(cx),
6620 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
6621 );
6622 });
6623
6624 view.update(cx, |view, cx| {
6625 view.add_selection_above(&AddSelectionAbove, cx);
6626 assert_eq!(
6627 view.selected_display_ranges(cx),
6628 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
6629 );
6630 });
6631
6632 view.update(cx, |view, cx| {
6633 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx);
6634 view.add_selection_below(&AddSelectionBelow, cx);
6635 assert_eq!(
6636 view.selected_display_ranges(cx),
6637 vec![
6638 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
6639 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
6640 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
6641 ]
6642 );
6643 });
6644
6645 view.update(cx, |view, cx| {
6646 view.add_selection_below(&AddSelectionBelow, cx);
6647 assert_eq!(
6648 view.selected_display_ranges(cx),
6649 vec![
6650 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
6651 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
6652 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
6653 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
6654 ]
6655 );
6656 });
6657
6658 view.update(cx, |view, cx| {
6659 view.add_selection_above(&AddSelectionAbove, cx);
6660 assert_eq!(
6661 view.selected_display_ranges(cx),
6662 vec![
6663 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
6664 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
6665 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
6666 ]
6667 );
6668 });
6669
6670 view.update(cx, |view, cx| {
6671 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx);
6672 });
6673 view.update(cx, |view, cx| {
6674 view.add_selection_above(&AddSelectionAbove, cx);
6675 assert_eq!(
6676 view.selected_display_ranges(cx),
6677 vec![
6678 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
6679 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
6680 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
6681 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
6682 ]
6683 );
6684 });
6685
6686 view.update(cx, |view, cx| {
6687 view.add_selection_below(&AddSelectionBelow, cx);
6688 assert_eq!(
6689 view.selected_display_ranges(cx),
6690 vec![
6691 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
6692 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
6693 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
6694 ]
6695 );
6696 });
6697 }
6698
6699 #[gpui::test]
6700 async fn test_select_larger_smaller_syntax_node(mut cx: gpui::TestAppContext) {
6701 let settings = cx.read(EditorSettings::test);
6702 let language = Arc::new(Language::new(
6703 LanguageConfig::default(),
6704 Some(tree_sitter_rust::language()),
6705 ));
6706
6707 let text = r#"
6708 use mod1::mod2::{mod3, mod4};
6709
6710 fn fn_1(param1: bool, param2: &str) {
6711 let var1 = "text";
6712 }
6713 "#
6714 .unindent();
6715
6716 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
6717 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6718 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6719 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
6720 .await;
6721
6722 view.update(&mut cx, |view, cx| {
6723 view.select_display_ranges(
6724 &[
6725 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
6726 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
6727 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
6728 ],
6729 cx,
6730 );
6731 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
6732 });
6733 assert_eq!(
6734 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6735 &[
6736 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
6737 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
6738 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
6739 ]
6740 );
6741
6742 view.update(&mut cx, |view, cx| {
6743 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
6744 });
6745 assert_eq!(
6746 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6747 &[
6748 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
6749 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
6750 ]
6751 );
6752
6753 view.update(&mut cx, |view, cx| {
6754 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
6755 });
6756 assert_eq!(
6757 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6758 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
6759 );
6760
6761 // Trying to expand the selected syntax node one more time has no effect.
6762 view.update(&mut cx, |view, cx| {
6763 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
6764 });
6765 assert_eq!(
6766 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6767 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
6768 );
6769
6770 view.update(&mut cx, |view, cx| {
6771 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
6772 });
6773 assert_eq!(
6774 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6775 &[
6776 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
6777 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
6778 ]
6779 );
6780
6781 view.update(&mut cx, |view, cx| {
6782 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
6783 });
6784 assert_eq!(
6785 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6786 &[
6787 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
6788 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
6789 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
6790 ]
6791 );
6792
6793 view.update(&mut cx, |view, cx| {
6794 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
6795 });
6796 assert_eq!(
6797 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6798 &[
6799 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
6800 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
6801 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
6802 ]
6803 );
6804
6805 // Trying to shrink the selected syntax node one more time has no effect.
6806 view.update(&mut cx, |view, cx| {
6807 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
6808 });
6809 assert_eq!(
6810 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6811 &[
6812 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
6813 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
6814 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
6815 ]
6816 );
6817
6818 // Ensure that we keep expanding the selection if the larger selection starts or ends within
6819 // a fold.
6820 view.update(&mut cx, |view, cx| {
6821 view.fold_ranges(
6822 vec![
6823 Point::new(0, 21)..Point::new(0, 24),
6824 Point::new(3, 20)..Point::new(3, 22),
6825 ],
6826 cx,
6827 );
6828 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
6829 });
6830 assert_eq!(
6831 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6832 &[
6833 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
6834 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
6835 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
6836 ]
6837 );
6838 }
6839
6840 #[gpui::test]
6841 async fn test_autoindent_selections(mut cx: gpui::TestAppContext) {
6842 let settings = cx.read(EditorSettings::test);
6843 let language = Arc::new(
6844 Language::new(
6845 LanguageConfig {
6846 brackets: vec![
6847 BracketPair {
6848 start: "{".to_string(),
6849 end: "}".to_string(),
6850 close: false,
6851 newline: true,
6852 },
6853 BracketPair {
6854 start: "(".to_string(),
6855 end: ")".to_string(),
6856 close: false,
6857 newline: true,
6858 },
6859 ],
6860 ..Default::default()
6861 },
6862 Some(tree_sitter_rust::language()),
6863 )
6864 .with_indents_query(
6865 r#"
6866 (_ "(" ")" @end) @indent
6867 (_ "{" "}" @end) @indent
6868 "#,
6869 )
6870 .unwrap(),
6871 );
6872
6873 let text = "fn a() {}";
6874
6875 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
6876 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6877 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6878 editor
6879 .condition(&cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
6880 .await;
6881
6882 editor.update(&mut cx, |editor, cx| {
6883 editor.select_ranges([5..5, 8..8, 9..9], None, cx);
6884 editor.newline(&Newline, cx);
6885 assert_eq!(editor.text(cx), "fn a(\n \n) {\n \n}\n");
6886 assert_eq!(
6887 editor.selected_ranges(cx),
6888 &[
6889 Point::new(1, 4)..Point::new(1, 4),
6890 Point::new(3, 4)..Point::new(3, 4),
6891 Point::new(5, 0)..Point::new(5, 0)
6892 ]
6893 );
6894 });
6895 }
6896
6897 #[gpui::test]
6898 async fn test_autoclose_pairs(mut cx: gpui::TestAppContext) {
6899 let settings = cx.read(EditorSettings::test);
6900 let language = Arc::new(Language::new(
6901 LanguageConfig {
6902 brackets: vec![
6903 BracketPair {
6904 start: "{".to_string(),
6905 end: "}".to_string(),
6906 close: true,
6907 newline: true,
6908 },
6909 BracketPair {
6910 start: "/*".to_string(),
6911 end: " */".to_string(),
6912 close: true,
6913 newline: true,
6914 },
6915 ],
6916 ..Default::default()
6917 },
6918 Some(tree_sitter_rust::language()),
6919 ));
6920
6921 let text = r#"
6922 a
6923
6924 /
6925
6926 "#
6927 .unindent();
6928
6929 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
6930 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6931 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6932 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
6933 .await;
6934
6935 view.update(&mut cx, |view, cx| {
6936 view.select_display_ranges(
6937 &[
6938 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
6939 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6940 ],
6941 cx,
6942 );
6943 view.handle_input(&Input("{".to_string()), cx);
6944 view.handle_input(&Input("{".to_string()), cx);
6945 view.handle_input(&Input("{".to_string()), cx);
6946 assert_eq!(
6947 view.text(cx),
6948 "
6949 {{{}}}
6950 {{{}}}
6951 /
6952
6953 "
6954 .unindent()
6955 );
6956
6957 view.move_right(&MoveRight, cx);
6958 view.handle_input(&Input("}".to_string()), cx);
6959 view.handle_input(&Input("}".to_string()), cx);
6960 view.handle_input(&Input("}".to_string()), cx);
6961 assert_eq!(
6962 view.text(cx),
6963 "
6964 {{{}}}}
6965 {{{}}}}
6966 /
6967
6968 "
6969 .unindent()
6970 );
6971
6972 view.undo(&Undo, cx);
6973 view.handle_input(&Input("/".to_string()), cx);
6974 view.handle_input(&Input("*".to_string()), cx);
6975 assert_eq!(
6976 view.text(cx),
6977 "
6978 /* */
6979 /* */
6980 /
6981
6982 "
6983 .unindent()
6984 );
6985
6986 view.undo(&Undo, cx);
6987 view.select_display_ranges(
6988 &[
6989 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6990 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6991 ],
6992 cx,
6993 );
6994 view.handle_input(&Input("*".to_string()), cx);
6995 assert_eq!(
6996 view.text(cx),
6997 "
6998 a
6999
7000 /*
7001 *
7002 "
7003 .unindent()
7004 );
7005 });
7006 }
7007
7008 #[gpui::test]
7009 async fn test_snippets(mut cx: gpui::TestAppContext) {
7010 let settings = cx.read(EditorSettings::test);
7011
7012 let text = "
7013 a. b
7014 a. b
7015 a. b
7016 "
7017 .unindent();
7018 let buffer = cx.update(|cx| MultiBuffer::build_simple(&text, cx));
7019 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7020
7021 editor.update(&mut cx, |editor, cx| {
7022 let buffer = &editor.snapshot(cx).buffer_snapshot;
7023 let snippet = Snippet::parse("f(${1:one}, ${2:two}, ${1:three})$0").unwrap();
7024 let insertion_ranges = [
7025 Point::new(0, 2).to_offset(buffer)..Point::new(0, 2).to_offset(buffer),
7026 Point::new(1, 2).to_offset(buffer)..Point::new(1, 2).to_offset(buffer),
7027 Point::new(2, 2).to_offset(buffer)..Point::new(2, 2).to_offset(buffer),
7028 ];
7029
7030 editor
7031 .insert_snippet(&insertion_ranges, snippet, cx)
7032 .unwrap();
7033 assert_eq!(
7034 editor.text(cx),
7035 "
7036 a.f(one, two, three) b
7037 a.f(one, two, three) b
7038 a.f(one, two, three) b
7039 "
7040 .unindent()
7041 );
7042 assert_eq!(
7043 editor.selected_ranges::<Point>(cx),
7044 &[
7045 Point::new(0, 4)..Point::new(0, 7),
7046 Point::new(0, 14)..Point::new(0, 19),
7047 Point::new(1, 4)..Point::new(1, 7),
7048 Point::new(1, 14)..Point::new(1, 19),
7049 Point::new(2, 4)..Point::new(2, 7),
7050 Point::new(2, 14)..Point::new(2, 19),
7051 ]
7052 );
7053
7054 // Can't move earlier than the first tab stop
7055 editor.move_to_prev_snippet_tabstop(cx);
7056 assert_eq!(
7057 editor.selected_ranges::<Point>(cx),
7058 &[
7059 Point::new(0, 4)..Point::new(0, 7),
7060 Point::new(0, 14)..Point::new(0, 19),
7061 Point::new(1, 4)..Point::new(1, 7),
7062 Point::new(1, 14)..Point::new(1, 19),
7063 Point::new(2, 4)..Point::new(2, 7),
7064 Point::new(2, 14)..Point::new(2, 19),
7065 ]
7066 );
7067
7068 assert!(editor.move_to_next_snippet_tabstop(cx));
7069 assert_eq!(
7070 editor.selected_ranges::<Point>(cx),
7071 &[
7072 Point::new(0, 9)..Point::new(0, 12),
7073 Point::new(1, 9)..Point::new(1, 12),
7074 Point::new(2, 9)..Point::new(2, 12)
7075 ]
7076 );
7077
7078 editor.move_to_prev_snippet_tabstop(cx);
7079 assert_eq!(
7080 editor.selected_ranges::<Point>(cx),
7081 &[
7082 Point::new(0, 4)..Point::new(0, 7),
7083 Point::new(0, 14)..Point::new(0, 19),
7084 Point::new(1, 4)..Point::new(1, 7),
7085 Point::new(1, 14)..Point::new(1, 19),
7086 Point::new(2, 4)..Point::new(2, 7),
7087 Point::new(2, 14)..Point::new(2, 19),
7088 ]
7089 );
7090
7091 assert!(editor.move_to_next_snippet_tabstop(cx));
7092 assert!(editor.move_to_next_snippet_tabstop(cx));
7093 assert_eq!(
7094 editor.selected_ranges::<Point>(cx),
7095 &[
7096 Point::new(0, 20)..Point::new(0, 20),
7097 Point::new(1, 20)..Point::new(1, 20),
7098 Point::new(2, 20)..Point::new(2, 20)
7099 ]
7100 );
7101
7102 // As soon as the last tab stop is reached, snippet state is gone
7103 editor.move_to_prev_snippet_tabstop(cx);
7104 assert_eq!(
7105 editor.selected_ranges::<Point>(cx),
7106 &[
7107 Point::new(0, 20)..Point::new(0, 20),
7108 Point::new(1, 20)..Point::new(1, 20),
7109 Point::new(2, 20)..Point::new(2, 20)
7110 ]
7111 );
7112 });
7113 }
7114
7115 #[gpui::test]
7116 async fn test_completion(mut cx: gpui::TestAppContext) {
7117 let settings = cx.read(EditorSettings::test);
7118 let (language_server, mut fake) = lsp::LanguageServer::fake_with_capabilities(
7119 lsp::ServerCapabilities {
7120 completion_provider: Some(lsp::CompletionOptions {
7121 trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
7122 ..Default::default()
7123 }),
7124 ..Default::default()
7125 },
7126 cx.background(),
7127 )
7128 .await;
7129
7130 let text = "
7131 one
7132 two
7133 three
7134 "
7135 .unindent();
7136 let buffer = cx.add_model(|cx| {
7137 Buffer::from_file(
7138 0,
7139 text,
7140 Box::new(FakeFile {
7141 path: Arc::from(Path::new("/the/file")),
7142 }),
7143 cx,
7144 )
7145 .with_language_server(language_server, cx)
7146 });
7147 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7148 buffer.next_notification(&cx).await;
7149
7150 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7151
7152 editor.update(&mut cx, |editor, cx| {
7153 editor.select_ranges([Point::new(0, 3)..Point::new(0, 3)], None, cx);
7154 editor.handle_input(&Input(".".to_string()), cx);
7155 });
7156
7157 handle_completion_request(
7158 &mut fake,
7159 "/the/file",
7160 Point::new(0, 4),
7161 &[
7162 (Point::new(0, 4)..Point::new(0, 4), "first_completion"),
7163 (Point::new(0, 4)..Point::new(0, 4), "second_completion"),
7164 ],
7165 )
7166 .await;
7167 editor.next_notification(&cx).await;
7168
7169 let apply_additional_edits = editor.update(&mut cx, |editor, cx| {
7170 editor.move_down(&MoveDown, cx);
7171 let apply_additional_edits = editor.confirm_completion(None, cx).unwrap();
7172 assert_eq!(
7173 editor.text(cx),
7174 "
7175 one.second_completion
7176 two
7177 three
7178 "
7179 .unindent()
7180 );
7181 apply_additional_edits
7182 });
7183
7184 handle_resolve_completion_request(
7185 &mut fake,
7186 Some((Point::new(2, 5)..Point::new(2, 5), "\nadditional edit")),
7187 )
7188 .await;
7189 apply_additional_edits.await.unwrap();
7190 assert_eq!(
7191 editor.read_with(&cx, |editor, cx| editor.text(cx)),
7192 "
7193 one.second_completion
7194 two
7195 three
7196 additional edit
7197 "
7198 .unindent()
7199 );
7200
7201 editor.update(&mut cx, |editor, cx| {
7202 editor.select_ranges(
7203 [
7204 Point::new(1, 3)..Point::new(1, 3),
7205 Point::new(2, 5)..Point::new(2, 5),
7206 ],
7207 None,
7208 cx,
7209 );
7210
7211 editor.handle_input(&Input(" ".to_string()), cx);
7212 assert!(editor.completion_state.is_none());
7213 editor.handle_input(&Input("s".to_string()), cx);
7214 assert!(editor.completion_state.is_none());
7215 });
7216
7217 handle_completion_request(
7218 &mut fake,
7219 "/the/file",
7220 Point::new(2, 7),
7221 &[
7222 (Point::new(2, 6)..Point::new(2, 7), "fourth_completion"),
7223 (Point::new(2, 6)..Point::new(2, 7), "fifth_completion"),
7224 (Point::new(2, 6)..Point::new(2, 7), "sixth_completion"),
7225 ],
7226 )
7227 .await;
7228 editor
7229 .condition(&cx, |editor, _| editor.completion_state.is_some())
7230 .await;
7231
7232 editor.update(&mut cx, |editor, cx| {
7233 editor.handle_input(&Input("i".to_string()), cx);
7234 });
7235
7236 handle_completion_request(
7237 &mut fake,
7238 "/the/file",
7239 Point::new(2, 8),
7240 &[
7241 (Point::new(2, 6)..Point::new(2, 8), "fourth_completion"),
7242 (Point::new(2, 6)..Point::new(2, 8), "fifth_completion"),
7243 (Point::new(2, 6)..Point::new(2, 8), "sixth_completion"),
7244 ],
7245 )
7246 .await;
7247 editor.next_notification(&cx).await;
7248
7249 let apply_additional_edits = editor.update(&mut cx, |editor, cx| {
7250 let apply_additional_edits = editor.confirm_completion(None, cx).unwrap();
7251 assert_eq!(
7252 editor.text(cx),
7253 "
7254 one.second_completion
7255 two sixth_completion
7256 three sixth_completion
7257 additional edit
7258 "
7259 .unindent()
7260 );
7261 apply_additional_edits
7262 });
7263 handle_resolve_completion_request(&mut fake, None).await;
7264 apply_additional_edits.await.unwrap();
7265
7266 async fn handle_completion_request(
7267 fake: &mut FakeLanguageServer,
7268 path: &str,
7269 position: Point,
7270 completions: &[(Range<Point>, &str)],
7271 ) {
7272 let (id, params) = fake.receive_request::<lsp::request::Completion>().await;
7273 assert_eq!(
7274 params.text_document_position.text_document.uri,
7275 lsp::Url::from_file_path(path).unwrap()
7276 );
7277 assert_eq!(
7278 params.text_document_position.position,
7279 lsp::Position::new(position.row, position.column)
7280 );
7281
7282 let completions = completions
7283 .iter()
7284 .map(|(range, new_text)| lsp::CompletionItem {
7285 label: new_text.to_string(),
7286 text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
7287 range: lsp::Range::new(
7288 lsp::Position::new(range.start.row, range.start.column),
7289 lsp::Position::new(range.start.row, range.start.column),
7290 ),
7291 new_text: new_text.to_string(),
7292 })),
7293 ..Default::default()
7294 })
7295 .collect();
7296 fake.respond(id, Some(lsp::CompletionResponse::Array(completions)))
7297 .await;
7298 }
7299
7300 async fn handle_resolve_completion_request(
7301 fake: &mut FakeLanguageServer,
7302 edit: Option<(Range<Point>, &str)>,
7303 ) {
7304 let (id, _) = fake
7305 .receive_request::<lsp::request::ResolveCompletionItem>()
7306 .await;
7307 fake.respond(
7308 id,
7309 lsp::CompletionItem {
7310 additional_text_edits: edit.map(|(range, new_text)| {
7311 vec![lsp::TextEdit::new(
7312 lsp::Range::new(
7313 lsp::Position::new(range.start.row, range.start.column),
7314 lsp::Position::new(range.end.row, range.end.column),
7315 ),
7316 new_text.to_string(),
7317 )]
7318 }),
7319 ..Default::default()
7320 },
7321 )
7322 .await;
7323 }
7324 }
7325
7326 #[gpui::test]
7327 async fn test_toggle_comment(mut cx: gpui::TestAppContext) {
7328 let settings = cx.read(EditorSettings::test);
7329 let language = Arc::new(Language::new(
7330 LanguageConfig {
7331 line_comment: Some("// ".to_string()),
7332 ..Default::default()
7333 },
7334 Some(tree_sitter_rust::language()),
7335 ));
7336
7337 let text = "
7338 fn a() {
7339 //b();
7340 // c();
7341 // d();
7342 }
7343 "
7344 .unindent();
7345
7346 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7347 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7348 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7349
7350 view.update(&mut cx, |editor, cx| {
7351 // If multiple selections intersect a line, the line is only
7352 // toggled once.
7353 editor.select_display_ranges(
7354 &[
7355 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
7356 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
7357 ],
7358 cx,
7359 );
7360 editor.toggle_comments(&ToggleComments, cx);
7361 assert_eq!(
7362 editor.text(cx),
7363 "
7364 fn a() {
7365 b();
7366 c();
7367 d();
7368 }
7369 "
7370 .unindent()
7371 );
7372
7373 // The comment prefix is inserted at the same column for every line
7374 // in a selection.
7375 editor.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx);
7376 editor.toggle_comments(&ToggleComments, cx);
7377 assert_eq!(
7378 editor.text(cx),
7379 "
7380 fn a() {
7381 // b();
7382 // c();
7383 // d();
7384 }
7385 "
7386 .unindent()
7387 );
7388
7389 // If a selection ends at the beginning of a line, that line is not toggled.
7390 editor.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx);
7391 editor.toggle_comments(&ToggleComments, cx);
7392 assert_eq!(
7393 editor.text(cx),
7394 "
7395 fn a() {
7396 // b();
7397 c();
7398 // d();
7399 }
7400 "
7401 .unindent()
7402 );
7403 });
7404 }
7405
7406 #[gpui::test]
7407 fn test_editing_disjoint_excerpts(cx: &mut gpui::MutableAppContext) {
7408 let settings = EditorSettings::test(cx);
7409 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
7410 let multibuffer = cx.add_model(|cx| {
7411 let mut multibuffer = MultiBuffer::new(0);
7412 multibuffer.push_excerpt(
7413 ExcerptProperties {
7414 buffer: &buffer,
7415 range: Point::new(0, 0)..Point::new(0, 4),
7416 },
7417 cx,
7418 );
7419 multibuffer.push_excerpt(
7420 ExcerptProperties {
7421 buffer: &buffer,
7422 range: Point::new(1, 0)..Point::new(1, 4),
7423 },
7424 cx,
7425 );
7426 multibuffer
7427 });
7428
7429 assert_eq!(multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb");
7430
7431 let (_, view) = cx.add_window(Default::default(), |cx| {
7432 build_editor(multibuffer, settings, cx)
7433 });
7434 view.update(cx, |view, cx| {
7435 view.select_display_ranges(
7436 &[
7437 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7438 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7439 ],
7440 cx,
7441 );
7442
7443 view.handle_input(&Input("X".to_string()), cx);
7444 assert_eq!(view.text(cx), "Xaaaa\nXbbbb");
7445 assert_eq!(
7446 view.selected_display_ranges(cx),
7447 &[
7448 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7449 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7450 ]
7451 )
7452 });
7453 }
7454
7455 #[gpui::test]
7456 fn test_editing_overlapping_excerpts(cx: &mut gpui::MutableAppContext) {
7457 let settings = EditorSettings::test(cx);
7458 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
7459 let multibuffer = cx.add_model(|cx| {
7460 let mut multibuffer = MultiBuffer::new(0);
7461 multibuffer.push_excerpt(
7462 ExcerptProperties {
7463 buffer: &buffer,
7464 range: Point::new(0, 0)..Point::new(1, 4),
7465 },
7466 cx,
7467 );
7468 multibuffer.push_excerpt(
7469 ExcerptProperties {
7470 buffer: &buffer,
7471 range: Point::new(1, 0)..Point::new(2, 4),
7472 },
7473 cx,
7474 );
7475 multibuffer
7476 });
7477
7478 assert_eq!(
7479 multibuffer.read(cx).read(cx).text(),
7480 "aaaa\nbbbb\nbbbb\ncccc"
7481 );
7482
7483 let (_, view) = cx.add_window(Default::default(), |cx| {
7484 build_editor(multibuffer, settings, cx)
7485 });
7486 view.update(cx, |view, cx| {
7487 view.select_display_ranges(
7488 &[
7489 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7490 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
7491 ],
7492 cx,
7493 );
7494
7495 view.handle_input(&Input("X".to_string()), cx);
7496 assert_eq!(view.text(cx), "aaaa\nbXbbXb\nbXbbXb\ncccc");
7497 assert_eq!(
7498 view.selected_display_ranges(cx),
7499 &[
7500 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7501 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7502 ]
7503 );
7504
7505 view.newline(&Newline, cx);
7506 assert_eq!(view.text(cx), "aaaa\nbX\nbbX\nb\nbX\nbbX\nb\ncccc");
7507 assert_eq!(
7508 view.selected_display_ranges(cx),
7509 &[
7510 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
7511 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
7512 ]
7513 );
7514 });
7515 }
7516
7517 #[gpui::test]
7518 fn test_refresh_selections(cx: &mut gpui::MutableAppContext) {
7519 let settings = EditorSettings::test(cx);
7520 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
7521 let mut excerpt1_id = None;
7522 let multibuffer = cx.add_model(|cx| {
7523 let mut multibuffer = MultiBuffer::new(0);
7524 excerpt1_id = Some(multibuffer.push_excerpt(
7525 ExcerptProperties {
7526 buffer: &buffer,
7527 range: Point::new(0, 0)..Point::new(1, 4),
7528 },
7529 cx,
7530 ));
7531 multibuffer.push_excerpt(
7532 ExcerptProperties {
7533 buffer: &buffer,
7534 range: Point::new(1, 0)..Point::new(2, 4),
7535 },
7536 cx,
7537 );
7538 multibuffer
7539 });
7540 assert_eq!(
7541 multibuffer.read(cx).read(cx).text(),
7542 "aaaa\nbbbb\nbbbb\ncccc"
7543 );
7544 let (_, editor) = cx.add_window(Default::default(), |cx| {
7545 let mut editor = build_editor(multibuffer.clone(), settings, cx);
7546 editor.select_display_ranges(
7547 &[
7548 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7549 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7550 ],
7551 cx,
7552 );
7553 editor
7554 });
7555
7556 // Refreshing selections is a no-op when excerpts haven't changed.
7557 editor.update(cx, |editor, cx| {
7558 editor.refresh_selections(cx);
7559 assert_eq!(
7560 editor.selected_display_ranges(cx),
7561 [
7562 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7563 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7564 ]
7565 );
7566 });
7567
7568 multibuffer.update(cx, |multibuffer, cx| {
7569 multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx);
7570 });
7571 editor.update(cx, |editor, cx| {
7572 // Removing an excerpt causes the first selection to become degenerate.
7573 assert_eq!(
7574 editor.selected_display_ranges(cx),
7575 [
7576 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7577 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
7578 ]
7579 );
7580
7581 // Refreshing selections will relocate the first selection to the original buffer
7582 // location.
7583 editor.refresh_selections(cx);
7584 assert_eq!(
7585 editor.selected_display_ranges(cx),
7586 [
7587 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7588 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3)
7589 ]
7590 );
7591 });
7592 }
7593
7594 #[gpui::test]
7595 async fn test_extra_newline_insertion(mut cx: gpui::TestAppContext) {
7596 let settings = cx.read(EditorSettings::test);
7597 let language = Arc::new(Language::new(
7598 LanguageConfig {
7599 brackets: vec![
7600 BracketPair {
7601 start: "{".to_string(),
7602 end: "}".to_string(),
7603 close: true,
7604 newline: true,
7605 },
7606 BracketPair {
7607 start: "/* ".to_string(),
7608 end: " */".to_string(),
7609 close: true,
7610 newline: true,
7611 },
7612 ],
7613 ..Default::default()
7614 },
7615 Some(tree_sitter_rust::language()),
7616 ));
7617
7618 let text = concat!(
7619 "{ }\n", // Suppress rustfmt
7620 " x\n", //
7621 " /* */\n", //
7622 "x\n", //
7623 "{{} }\n", //
7624 );
7625
7626 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7627 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7628 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7629 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
7630 .await;
7631
7632 view.update(&mut cx, |view, cx| {
7633 view.select_display_ranges(
7634 &[
7635 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
7636 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7637 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
7638 ],
7639 cx,
7640 );
7641 view.newline(&Newline, cx);
7642
7643 assert_eq!(
7644 view.buffer().read(cx).read(cx).text(),
7645 concat!(
7646 "{ \n", // Suppress rustfmt
7647 "\n", //
7648 "}\n", //
7649 " x\n", //
7650 " /* \n", //
7651 " \n", //
7652 " */\n", //
7653 "x\n", //
7654 "{{} \n", //
7655 "}\n", //
7656 )
7657 );
7658 });
7659 }
7660
7661 #[gpui::test]
7662 fn test_highlighted_ranges(cx: &mut gpui::MutableAppContext) {
7663 let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
7664 let settings = EditorSettings::test(&cx);
7665 let (_, editor) = cx.add_window(Default::default(), |cx| {
7666 build_editor(buffer.clone(), settings, cx)
7667 });
7668
7669 editor.update(cx, |editor, cx| {
7670 struct Type1;
7671 struct Type2;
7672
7673 let buffer = buffer.read(cx).snapshot(cx);
7674
7675 let anchor_range = |range: Range<Point>| {
7676 buffer.anchor_after(range.start)..buffer.anchor_after(range.end)
7677 };
7678
7679 editor.highlight_ranges::<Type1>(
7680 vec![
7681 anchor_range(Point::new(2, 1)..Point::new(2, 3)),
7682 anchor_range(Point::new(4, 2)..Point::new(4, 4)),
7683 anchor_range(Point::new(6, 3)..Point::new(6, 5)),
7684 anchor_range(Point::new(8, 4)..Point::new(8, 6)),
7685 ],
7686 Color::red(),
7687 cx,
7688 );
7689 editor.highlight_ranges::<Type2>(
7690 vec![
7691 anchor_range(Point::new(3, 2)..Point::new(3, 5)),
7692 anchor_range(Point::new(5, 3)..Point::new(5, 6)),
7693 anchor_range(Point::new(7, 4)..Point::new(7, 7)),
7694 anchor_range(Point::new(9, 5)..Point::new(9, 8)),
7695 ],
7696 Color::green(),
7697 cx,
7698 );
7699
7700 let snapshot = editor.snapshot(cx);
7701 let mut highlighted_ranges = editor.highlighted_ranges_in_range(
7702 anchor_range(Point::new(3, 4)..Point::new(7, 4)),
7703 &snapshot,
7704 );
7705 // Enforce a consistent ordering based on color without relying on the ordering of the
7706 // highlight's `TypeId` which is non-deterministic.
7707 highlighted_ranges.sort_unstable_by_key(|(_, color)| *color);
7708 assert_eq!(
7709 highlighted_ranges,
7710 &[
7711 (
7712 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 5),
7713 Color::green(),
7714 ),
7715 (
7716 DisplayPoint::new(5, 3)..DisplayPoint::new(5, 6),
7717 Color::green(),
7718 ),
7719 (
7720 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 4),
7721 Color::red(),
7722 ),
7723 (
7724 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
7725 Color::red(),
7726 ),
7727 ]
7728 );
7729 assert_eq!(
7730 editor.highlighted_ranges_in_range(
7731 anchor_range(Point::new(5, 6)..Point::new(6, 4)),
7732 &snapshot,
7733 ),
7734 &[(
7735 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
7736 Color::red(),
7737 )]
7738 );
7739 });
7740 }
7741
7742 #[test]
7743 fn test_combine_syntax_and_fuzzy_match_highlights() {
7744 let string = "abcdefghijklmnop";
7745 let default = HighlightStyle::default();
7746 let syntax_ranges = [
7747 (
7748 0..3,
7749 HighlightStyle {
7750 color: Color::red(),
7751 ..default
7752 },
7753 ),
7754 (
7755 4..8,
7756 HighlightStyle {
7757 color: Color::green(),
7758 ..default
7759 },
7760 ),
7761 ];
7762 let match_indices = [4, 6, 7, 8];
7763 assert_eq!(
7764 combine_syntax_and_fuzzy_match_highlights(
7765 &string,
7766 default,
7767 syntax_ranges.into_iter(),
7768 &match_indices,
7769 ),
7770 &[
7771 (
7772 0..3,
7773 HighlightStyle {
7774 color: Color::red(),
7775 ..default
7776 },
7777 ),
7778 (
7779 4..5,
7780 HighlightStyle {
7781 color: Color::green(),
7782 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
7783 ..default
7784 },
7785 ),
7786 (
7787 5..6,
7788 HighlightStyle {
7789 color: Color::green(),
7790 ..default
7791 },
7792 ),
7793 (
7794 6..8,
7795 HighlightStyle {
7796 color: Color::green(),
7797 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
7798 ..default
7799 },
7800 ),
7801 (
7802 8..9,
7803 HighlightStyle {
7804 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
7805 ..default
7806 },
7807 ),
7808 ]
7809 );
7810 }
7811
7812 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
7813 let point = DisplayPoint::new(row as u32, column as u32);
7814 point..point
7815 }
7816
7817 fn build_editor(
7818 buffer: ModelHandle<MultiBuffer>,
7819 settings: EditorSettings,
7820 cx: &mut ViewContext<Editor>,
7821 ) -> Editor {
7822 Editor::for_buffer(buffer, Arc::new(move |_| settings.clone()), cx)
7823 }
7824}
7825
7826trait RangeExt<T> {
7827 fn sorted(&self) -> Range<T>;
7828 fn to_inclusive(&self) -> RangeInclusive<T>;
7829}
7830
7831impl<T: Ord + Clone> RangeExt<T> for Range<T> {
7832 fn sorted(&self) -> Self {
7833 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
7834 }
7835
7836 fn to_inclusive(&self) -> RangeInclusive<T> {
7837 self.start.clone()..=self.end.clone()
7838 }
7839}