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