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