1pub mod display_map;
2mod element;
3pub mod items;
4pub mod movement;
5mod multi_buffer;
6
7#[cfg(test)]
8mod test;
9
10use aho_corasick::AhoCorasick;
11use anyhow::Result;
12use clock::ReplicaId;
13use collections::{BTreeMap, HashMap, HashSet};
14pub use display_map::DisplayPoint;
15use display_map::*;
16pub use element::*;
17use fuzzy::{StringMatch, StringMatchCandidate};
18use gpui::{
19 action,
20 color::Color,
21 elements::*,
22 executor,
23 fonts::{self, HighlightStyle, TextStyle},
24 geometry::vector::{vec2f, Vector2F},
25 keymap::Binding,
26 platform::CursorStyle,
27 text_layout, AppContext, ClipboardItem, Element, ElementBox, Entity, ModelHandle,
28 MutableAppContext, RenderContext, Task, View, ViewContext, WeakModelHandle, WeakViewHandle,
29};
30use items::BufferItemHandle;
31use itertools::Itertools as _;
32use language::{
33 AnchorRangeExt as _, BracketPair, Buffer, CodeAction, Completion, CompletionLabel, Diagnostic,
34 DiagnosticSeverity, Language, Point, Selection, SelectionGoal, TransactionId,
35};
36use multi_buffer::MultiBufferChunks;
37pub use multi_buffer::{
38 char_kind, Anchor, AnchorRangeExt, CharKind, ExcerptId, ExcerptProperties, MultiBuffer,
39 MultiBufferSnapshot, ToOffset, ToPoint,
40};
41use ordered_float::OrderedFloat;
42use postage::watch;
43use project::Project;
44use serde::{Deserialize, Serialize};
45use smallvec::SmallVec;
46use smol::Timer;
47use snippet::Snippet;
48use std::{
49 any::TypeId,
50 cmp::{self, Ordering, Reverse},
51 iter::{self, FromIterator},
52 mem,
53 ops::{Deref, DerefMut, Range, RangeInclusive, Sub},
54 sync::Arc,
55 time::{Duration, Instant},
56};
57pub use sum_tree::Bias;
58use text::rope::TextDimension;
59use theme::{DiagnosticStyle, EditorStyle};
60use util::{post_inc, ResultExt, TryFutureExt};
61use workspace::{ItemNavHistory, PathOpener, Workspace};
62
63const CURSOR_BLINK_INTERVAL: Duration = Duration::from_millis(500);
64const MAX_LINE_LEN: usize = 1024;
65const MIN_NAVIGATION_HISTORY_ROW_DELTA: i64 = 10;
66
67action!(Cancel);
68action!(Backspace);
69action!(Delete);
70action!(Input, String);
71action!(Newline);
72action!(Tab);
73action!(Outdent);
74action!(DeleteLine);
75action!(DeleteToPreviousWordBoundary);
76action!(DeleteToNextWordBoundary);
77action!(DeleteToBeginningOfLine);
78action!(DeleteToEndOfLine);
79action!(CutToEndOfLine);
80action!(DuplicateLine);
81action!(MoveLineUp);
82action!(MoveLineDown);
83action!(Cut);
84action!(Copy);
85action!(Paste);
86action!(Undo);
87action!(Redo);
88action!(MoveUp);
89action!(MoveDown);
90action!(MoveLeft);
91action!(MoveRight);
92action!(MoveToPreviousWordBoundary);
93action!(MoveToNextWordBoundary);
94action!(MoveToBeginningOfLine);
95action!(MoveToEndOfLine);
96action!(MoveToBeginning);
97action!(MoveToEnd);
98action!(SelectUp);
99action!(SelectDown);
100action!(SelectLeft);
101action!(SelectRight);
102action!(SelectToPreviousWordBoundary);
103action!(SelectToNextWordBoundary);
104action!(SelectToBeginningOfLine, bool);
105action!(SelectToEndOfLine, bool);
106action!(SelectToBeginning);
107action!(SelectToEnd);
108action!(SelectAll);
109action!(SelectLine);
110action!(SplitSelectionIntoLines);
111action!(AddSelectionAbove);
112action!(AddSelectionBelow);
113action!(SelectNext, bool);
114action!(ToggleComments);
115action!(SelectLargerSyntaxNode);
116action!(SelectSmallerSyntaxNode);
117action!(MoveToEnclosingBracket);
118action!(ShowNextDiagnostic);
119action!(GoToDefinition);
120action!(PageUp);
121action!(PageDown);
122action!(Fold);
123action!(Unfold);
124action!(FoldSelectedRanges);
125action!(Scroll, Vector2F);
126action!(Select, SelectPhase);
127action!(ShowCompletions);
128action!(ShowCodeActions);
129action!(ConfirmCompletion, Option<usize>);
130action!(ConfirmCodeAction, Option<usize>);
131
132pub fn init(cx: &mut MutableAppContext, path_openers: &mut Vec<Box<dyn PathOpener>>) {
133 path_openers.push(Box::new(items::BufferOpener));
134 cx.add_bindings(vec![
135 Binding::new("escape", Cancel, Some("Editor")),
136 Binding::new("backspace", Backspace, Some("Editor")),
137 Binding::new("ctrl-h", Backspace, Some("Editor")),
138 Binding::new("delete", Delete, Some("Editor")),
139 Binding::new("ctrl-d", Delete, Some("Editor")),
140 Binding::new("enter", Newline, Some("Editor && mode == full")),
141 Binding::new(
142 "alt-enter",
143 Input("\n".into()),
144 Some("Editor && mode == auto_height"),
145 ),
146 Binding::new(
147 "enter",
148 ConfirmCompletion(None),
149 Some("Editor && showing_completions"),
150 ),
151 Binding::new(
152 "enter",
153 ConfirmCodeAction(None),
154 Some("Editor && showing_code_actions"),
155 ),
156 Binding::new("tab", Tab, Some("Editor")),
157 Binding::new(
158 "tab",
159 ConfirmCompletion(None),
160 Some("Editor && showing_completions"),
161 ),
162 Binding::new("shift-tab", Outdent, Some("Editor")),
163 Binding::new("ctrl-shift-K", DeleteLine, Some("Editor")),
164 Binding::new(
165 "alt-backspace",
166 DeleteToPreviousWordBoundary,
167 Some("Editor"),
168 ),
169 Binding::new("alt-h", DeleteToPreviousWordBoundary, Some("Editor")),
170 Binding::new("alt-delete", DeleteToNextWordBoundary, Some("Editor")),
171 Binding::new("alt-d", DeleteToNextWordBoundary, Some("Editor")),
172 Binding::new("cmd-backspace", DeleteToBeginningOfLine, Some("Editor")),
173 Binding::new("cmd-delete", DeleteToEndOfLine, Some("Editor")),
174 Binding::new("ctrl-k", CutToEndOfLine, Some("Editor")),
175 Binding::new("cmd-shift-D", DuplicateLine, Some("Editor")),
176 Binding::new("ctrl-cmd-up", MoveLineUp, Some("Editor")),
177 Binding::new("ctrl-cmd-down", MoveLineDown, Some("Editor")),
178 Binding::new("cmd-x", Cut, Some("Editor")),
179 Binding::new("cmd-c", Copy, Some("Editor")),
180 Binding::new("cmd-v", Paste, Some("Editor")),
181 Binding::new("cmd-z", Undo, Some("Editor")),
182 Binding::new("cmd-shift-Z", Redo, Some("Editor")),
183 Binding::new("up", MoveUp, Some("Editor")),
184 Binding::new("down", MoveDown, Some("Editor")),
185 Binding::new("left", MoveLeft, Some("Editor")),
186 Binding::new("right", MoveRight, Some("Editor")),
187 Binding::new("ctrl-p", MoveUp, Some("Editor")),
188 Binding::new("ctrl-n", MoveDown, Some("Editor")),
189 Binding::new("ctrl-b", MoveLeft, Some("Editor")),
190 Binding::new("ctrl-f", MoveRight, Some("Editor")),
191 Binding::new("alt-left", MoveToPreviousWordBoundary, Some("Editor")),
192 Binding::new("alt-b", MoveToPreviousWordBoundary, Some("Editor")),
193 Binding::new("alt-right", MoveToNextWordBoundary, Some("Editor")),
194 Binding::new("alt-f", MoveToNextWordBoundary, Some("Editor")),
195 Binding::new("cmd-left", MoveToBeginningOfLine, Some("Editor")),
196 Binding::new("ctrl-a", MoveToBeginningOfLine, Some("Editor")),
197 Binding::new("cmd-right", MoveToEndOfLine, Some("Editor")),
198 Binding::new("ctrl-e", MoveToEndOfLine, Some("Editor")),
199 Binding::new("cmd-up", MoveToBeginning, Some("Editor")),
200 Binding::new("cmd-down", MoveToEnd, Some("Editor")),
201 Binding::new("shift-up", SelectUp, Some("Editor")),
202 Binding::new("ctrl-shift-P", SelectUp, Some("Editor")),
203 Binding::new("shift-down", SelectDown, Some("Editor")),
204 Binding::new("ctrl-shift-N", SelectDown, Some("Editor")),
205 Binding::new("shift-left", SelectLeft, Some("Editor")),
206 Binding::new("ctrl-shift-B", SelectLeft, Some("Editor")),
207 Binding::new("shift-right", SelectRight, Some("Editor")),
208 Binding::new("ctrl-shift-F", SelectRight, Some("Editor")),
209 Binding::new(
210 "alt-shift-left",
211 SelectToPreviousWordBoundary,
212 Some("Editor"),
213 ),
214 Binding::new("alt-shift-B", SelectToPreviousWordBoundary, Some("Editor")),
215 Binding::new("alt-shift-right", SelectToNextWordBoundary, Some("Editor")),
216 Binding::new("alt-shift-F", SelectToNextWordBoundary, Some("Editor")),
217 Binding::new(
218 "cmd-shift-left",
219 SelectToBeginningOfLine(true),
220 Some("Editor"),
221 ),
222 Binding::new(
223 "ctrl-shift-A",
224 SelectToBeginningOfLine(true),
225 Some("Editor"),
226 ),
227 Binding::new("cmd-shift-right", SelectToEndOfLine(true), Some("Editor")),
228 Binding::new("ctrl-shift-E", SelectToEndOfLine(true), Some("Editor")),
229 Binding::new("cmd-shift-up", SelectToBeginning, Some("Editor")),
230 Binding::new("cmd-shift-down", SelectToEnd, Some("Editor")),
231 Binding::new("cmd-a", SelectAll, Some("Editor")),
232 Binding::new("cmd-l", SelectLine, Some("Editor")),
233 Binding::new("cmd-shift-L", SplitSelectionIntoLines, Some("Editor")),
234 Binding::new("cmd-alt-up", AddSelectionAbove, Some("Editor")),
235 Binding::new("cmd-ctrl-p", AddSelectionAbove, Some("Editor")),
236 Binding::new("cmd-alt-down", AddSelectionBelow, Some("Editor")),
237 Binding::new("cmd-ctrl-n", AddSelectionBelow, Some("Editor")),
238 Binding::new("cmd-d", SelectNext(false), Some("Editor")),
239 Binding::new("cmd-k cmd-d", SelectNext(true), Some("Editor")),
240 Binding::new("cmd-/", ToggleComments, Some("Editor")),
241 Binding::new("alt-up", SelectLargerSyntaxNode, Some("Editor")),
242 Binding::new("ctrl-w", SelectLargerSyntaxNode, Some("Editor")),
243 Binding::new("alt-down", SelectSmallerSyntaxNode, Some("Editor")),
244 Binding::new("ctrl-shift-W", SelectSmallerSyntaxNode, Some("Editor")),
245 Binding::new("f8", ShowNextDiagnostic, Some("Editor")),
246 Binding::new("f12", GoToDefinition, Some("Editor")),
247 Binding::new("ctrl-m", MoveToEnclosingBracket, Some("Editor")),
248 Binding::new("pageup", PageUp, Some("Editor")),
249 Binding::new("pagedown", PageDown, Some("Editor")),
250 Binding::new("alt-cmd-[", Fold, Some("Editor")),
251 Binding::new("alt-cmd-]", Unfold, Some("Editor")),
252 Binding::new("alt-cmd-f", FoldSelectedRanges, Some("Editor")),
253 Binding::new("ctrl-space", ShowCompletions, Some("Editor")),
254 Binding::new("cmd-.", ShowCodeActions, Some("Editor")),
255 ]);
256
257 cx.add_action(Editor::open_new);
258 cx.add_action(|this: &mut Editor, action: &Scroll, cx| this.set_scroll_position(action.0, cx));
259 cx.add_action(Editor::select);
260 cx.add_action(Editor::cancel);
261 cx.add_action(Editor::handle_input);
262 cx.add_action(Editor::newline);
263 cx.add_action(Editor::backspace);
264 cx.add_action(Editor::delete);
265 cx.add_action(Editor::tab);
266 cx.add_action(Editor::outdent);
267 cx.add_action(Editor::delete_line);
268 cx.add_action(Editor::delete_to_previous_word_boundary);
269 cx.add_action(Editor::delete_to_next_word_boundary);
270 cx.add_action(Editor::delete_to_beginning_of_line);
271 cx.add_action(Editor::delete_to_end_of_line);
272 cx.add_action(Editor::cut_to_end_of_line);
273 cx.add_action(Editor::duplicate_line);
274 cx.add_action(Editor::move_line_up);
275 cx.add_action(Editor::move_line_down);
276 cx.add_action(Editor::cut);
277 cx.add_action(Editor::copy);
278 cx.add_action(Editor::paste);
279 cx.add_action(Editor::undo);
280 cx.add_action(Editor::redo);
281 cx.add_action(Editor::move_up);
282 cx.add_action(Editor::move_down);
283 cx.add_action(Editor::move_left);
284 cx.add_action(Editor::move_right);
285 cx.add_action(Editor::move_to_previous_word_boundary);
286 cx.add_action(Editor::move_to_next_word_boundary);
287 cx.add_action(Editor::move_to_beginning_of_line);
288 cx.add_action(Editor::move_to_end_of_line);
289 cx.add_action(Editor::move_to_beginning);
290 cx.add_action(Editor::move_to_end);
291 cx.add_action(Editor::select_up);
292 cx.add_action(Editor::select_down);
293 cx.add_action(Editor::select_left);
294 cx.add_action(Editor::select_right);
295 cx.add_action(Editor::select_to_previous_word_boundary);
296 cx.add_action(Editor::select_to_next_word_boundary);
297 cx.add_action(Editor::select_to_beginning_of_line);
298 cx.add_action(Editor::select_to_end_of_line);
299 cx.add_action(Editor::select_to_beginning);
300 cx.add_action(Editor::select_to_end);
301 cx.add_action(Editor::select_all);
302 cx.add_action(Editor::select_line);
303 cx.add_action(Editor::split_selection_into_lines);
304 cx.add_action(Editor::add_selection_above);
305 cx.add_action(Editor::add_selection_below);
306 cx.add_action(Editor::select_next);
307 cx.add_action(Editor::toggle_comments);
308 cx.add_action(Editor::select_larger_syntax_node);
309 cx.add_action(Editor::select_smaller_syntax_node);
310 cx.add_action(Editor::move_to_enclosing_bracket);
311 cx.add_action(Editor::show_next_diagnostic);
312 cx.add_action(Editor::go_to_definition);
313 cx.add_action(Editor::page_up);
314 cx.add_action(Editor::page_down);
315 cx.add_action(Editor::fold);
316 cx.add_action(Editor::unfold);
317 cx.add_action(Editor::fold_selected_ranges);
318 cx.add_action(Editor::show_completions);
319 cx.add_action(Editor::show_code_actions);
320 cx.add_async_action(Editor::confirm_completion);
321 cx.add_async_action(Editor::confirm_code_action);
322}
323
324trait SelectionExt {
325 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize>;
326 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point>;
327 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint>;
328 fn spanned_rows(&self, include_end_if_at_line_start: bool, map: &DisplaySnapshot)
329 -> Range<u32>;
330}
331
332trait InvalidationRegion {
333 fn ranges(&self) -> &[Range<Anchor>];
334}
335
336#[derive(Clone, Debug)]
337pub enum SelectPhase {
338 Begin {
339 position: DisplayPoint,
340 add: bool,
341 click_count: usize,
342 },
343 BeginColumnar {
344 position: DisplayPoint,
345 overshoot: u32,
346 },
347 Extend {
348 position: DisplayPoint,
349 click_count: usize,
350 },
351 Update {
352 position: DisplayPoint,
353 overshoot: u32,
354 scroll_position: Vector2F,
355 },
356 End,
357}
358
359#[derive(Clone, Debug)]
360enum SelectMode {
361 Character,
362 Word(Range<Anchor>),
363 Line(Range<Anchor>),
364 All,
365}
366
367#[derive(PartialEq, Eq)]
368pub enum Autoscroll {
369 Fit,
370 Center,
371 Newest,
372}
373
374#[derive(Copy, Clone, PartialEq, Eq)]
375pub enum EditorMode {
376 SingleLine,
377 AutoHeight { max_lines: usize },
378 Full,
379}
380
381#[derive(Clone)]
382pub struct EditorSettings {
383 pub tab_size: usize,
384 pub soft_wrap: SoftWrap,
385 pub style: EditorStyle,
386}
387
388#[derive(Clone)]
389pub enum SoftWrap {
390 None,
391 EditorWidth,
392 Column(u32),
393}
394
395type CompletionId = usize;
396
397pub type BuildSettings = Arc<dyn 'static + Send + Sync + Fn(&AppContext) -> EditorSettings>;
398
399pub struct Editor {
400 handle: WeakViewHandle<Self>,
401 buffer: ModelHandle<MultiBuffer>,
402 display_map: ModelHandle<DisplayMap>,
403 next_selection_id: usize,
404 selections: Arc<[Selection<Anchor>]>,
405 pending_selection: Option<PendingSelection>,
406 columnar_selection_tail: Option<Anchor>,
407 add_selections_state: Option<AddSelectionsState>,
408 select_next_state: Option<SelectNextState>,
409 selection_history:
410 HashMap<TransactionId, (Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)>,
411 autoclose_stack: InvalidationStack<BracketPairState>,
412 snippet_stack: InvalidationStack<SnippetState>,
413 select_larger_syntax_node_stack: Vec<Box<[Selection<usize>]>>,
414 active_diagnostics: Option<ActiveDiagnosticGroup>,
415 scroll_position: Vector2F,
416 scroll_top_anchor: Option<Anchor>,
417 autoscroll_request: Option<Autoscroll>,
418 build_settings: BuildSettings,
419 project: Option<ModelHandle<Project>>,
420 focused: bool,
421 show_local_cursors: bool,
422 blink_epoch: usize,
423 blinking_paused: bool,
424 mode: EditorMode,
425 vertical_scroll_margin: f32,
426 placeholder_text: Option<Arc<str>>,
427 highlighted_rows: Option<Range<u32>>,
428 highlighted_ranges: BTreeMap<TypeId, (Color, Vec<Range<Anchor>>)>,
429 nav_history: Option<ItemNavHistory>,
430 context_menu: Option<ContextMenu>,
431 completion_tasks: Vec<(CompletionId, Task<Option<()>>)>,
432 next_completion_id: CompletionId,
433}
434
435pub struct EditorSnapshot {
436 pub mode: EditorMode,
437 pub display_snapshot: DisplaySnapshot,
438 pub placeholder_text: Option<Arc<str>>,
439 is_focused: bool,
440 scroll_position: Vector2F,
441 scroll_top_anchor: Option<Anchor>,
442}
443
444struct PendingSelection {
445 selection: Selection<Anchor>,
446 mode: SelectMode,
447}
448
449struct AddSelectionsState {
450 above: bool,
451 stack: Vec<usize>,
452}
453
454struct SelectNextState {
455 query: AhoCorasick,
456 wordwise: bool,
457 done: bool,
458}
459
460struct BracketPairState {
461 ranges: Vec<Range<Anchor>>,
462 pair: BracketPair,
463}
464
465struct SnippetState {
466 ranges: Vec<Vec<Range<Anchor>>>,
467 active_index: usize,
468}
469
470struct InvalidationStack<T>(Vec<T>);
471
472enum ContextMenu {
473 Completions(CompletionsMenu),
474 CodeActions(CodeActionsMenu),
475}
476
477impl ContextMenu {
478 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) -> bool {
479 if self.visible() {
480 match self {
481 ContextMenu::Completions(menu) => menu.select_prev(cx),
482 ContextMenu::CodeActions(menu) => menu.select_prev(cx),
483 }
484 true
485 } else {
486 false
487 }
488 }
489
490 fn select_next(&mut self, cx: &mut ViewContext<Editor>) -> bool {
491 if self.visible() {
492 match self {
493 ContextMenu::Completions(menu) => menu.select_next(cx),
494 ContextMenu::CodeActions(menu) => menu.select_next(cx),
495 }
496 true
497 } else {
498 false
499 }
500 }
501
502 fn visible(&self) -> bool {
503 match self {
504 ContextMenu::Completions(menu) => menu.visible(),
505 ContextMenu::CodeActions(menu) => menu.visible(),
506 }
507 }
508
509 fn render(&self, build_settings: BuildSettings, cx: &AppContext) -> ElementBox {
510 match self {
511 ContextMenu::Completions(menu) => menu.render(build_settings, cx),
512 ContextMenu::CodeActions(menu) => menu.render(build_settings, cx),
513 }
514 }
515}
516
517struct CompletionsMenu {
518 id: CompletionId,
519 initial_position: Anchor,
520 buffer: ModelHandle<Buffer>,
521 completions: Arc<[Completion]>,
522 match_candidates: Vec<StringMatchCandidate>,
523 matches: Arc<[StringMatch]>,
524 selected_item: usize,
525 list: UniformListState,
526}
527
528impl CompletionsMenu {
529 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) {
530 if self.selected_item > 0 {
531 self.selected_item -= 1;
532 self.list.scroll_to(ScrollTarget::Show(self.selected_item));
533 }
534 cx.notify();
535 }
536
537 fn select_next(&mut self, cx: &mut ViewContext<Editor>) {
538 if self.selected_item + 1 < self.matches.len() {
539 self.selected_item += 1;
540 self.list.scroll_to(ScrollTarget::Show(self.selected_item));
541 }
542 cx.notify();
543 }
544
545 fn visible(&self) -> bool {
546 !self.matches.is_empty()
547 }
548
549 fn render(&self, build_settings: BuildSettings, cx: &AppContext) -> ElementBox {
550 enum CompletionTag {}
551
552 let settings = build_settings(cx);
553 let completions = self.completions.clone();
554 let matches = self.matches.clone();
555 let selected_item = self.selected_item;
556 UniformList::new(self.list.clone(), matches.len(), move |range, items, cx| {
557 let settings = build_settings(cx);
558 let start_ix = range.start;
559 for (ix, mat) in matches[range].iter().enumerate() {
560 let completion = &completions[mat.candidate_id];
561 let item_ix = start_ix + ix;
562 items.push(
563 MouseEventHandler::new::<CompletionTag, _, _, _>(
564 mat.candidate_id,
565 cx,
566 |state, _| {
567 let item_style = if item_ix == selected_item {
568 settings.style.autocomplete.selected_item
569 } else if state.hovered {
570 settings.style.autocomplete.hovered_item
571 } else {
572 settings.style.autocomplete.item
573 };
574
575 Text::new(completion.label.text.clone(), settings.style.text.clone())
576 .with_soft_wrap(false)
577 .with_highlights(combine_syntax_and_fuzzy_match_highlights(
578 &completion.label.text,
579 settings.style.text.color.into(),
580 styled_runs_for_completion_label(
581 &completion.label,
582 settings.style.text.color,
583 &settings.style.syntax,
584 ),
585 &mat.positions,
586 ))
587 .contained()
588 .with_style(item_style)
589 .boxed()
590 },
591 )
592 .with_cursor_style(CursorStyle::PointingHand)
593 .on_mouse_down(move |cx| {
594 cx.dispatch_action(ConfirmCompletion(Some(item_ix)));
595 })
596 .boxed(),
597 );
598 }
599 })
600 .with_width_from_item(
601 self.matches
602 .iter()
603 .enumerate()
604 .max_by_key(|(_, mat)| {
605 self.completions[mat.candidate_id]
606 .label
607 .text
608 .chars()
609 .count()
610 })
611 .map(|(ix, _)| ix),
612 )
613 .contained()
614 .with_style(settings.style.autocomplete.container)
615 .boxed()
616 }
617
618 pub async fn filter(&mut self, query: Option<&str>, executor: Arc<executor::Background>) {
619 let mut matches = if let Some(query) = query {
620 fuzzy::match_strings(
621 &self.match_candidates,
622 query,
623 false,
624 100,
625 &Default::default(),
626 executor,
627 )
628 .await
629 } else {
630 self.match_candidates
631 .iter()
632 .enumerate()
633 .map(|(candidate_id, candidate)| StringMatch {
634 candidate_id,
635 score: Default::default(),
636 positions: Default::default(),
637 string: candidate.string.clone(),
638 })
639 .collect()
640 };
641 matches.sort_unstable_by_key(|mat| {
642 (
643 Reverse(OrderedFloat(mat.score)),
644 self.completions[mat.candidate_id].sort_key(),
645 )
646 });
647
648 for mat in &mut matches {
649 let filter_start = self.completions[mat.candidate_id].label.filter_range.start;
650 for position in &mut mat.positions {
651 *position += filter_start;
652 }
653 }
654
655 self.matches = matches.into();
656 }
657}
658
659struct CodeActionsMenu {
660 actions: Arc<[CodeAction]>,
661 buffer: ModelHandle<Buffer>,
662 selected_item: usize,
663 list: UniformListState,
664}
665
666impl CodeActionsMenu {
667 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) {
668 if self.selected_item > 0 {
669 self.selected_item -= 1;
670 cx.notify()
671 }
672 }
673
674 fn select_next(&mut self, cx: &mut ViewContext<Editor>) {
675 if self.selected_item + 1 < self.actions.len() {
676 self.selected_item += 1;
677 cx.notify()
678 }
679 }
680
681 fn visible(&self) -> bool {
682 !self.actions.is_empty()
683 }
684
685 fn render(&self, build_settings: BuildSettings, cx: &AppContext) -> ElementBox {
686 enum ActionTag {}
687
688 let settings = build_settings(cx);
689 let actions = self.actions.clone();
690 let selected_item = self.selected_item;
691 UniformList::new(self.list.clone(), actions.len(), move |range, items, cx| {
692 let settings = build_settings(cx);
693 let start_ix = range.start;
694 for (ix, action) in actions[range].iter().enumerate() {
695 let item_ix = start_ix + ix;
696 items.push(
697 MouseEventHandler::new::<ActionTag, _, _, _>(item_ix, cx, |state, _| {
698 let item_style = if item_ix == selected_item {
699 settings.style.autocomplete.selected_item
700 } else if state.hovered {
701 settings.style.autocomplete.hovered_item
702 } else {
703 settings.style.autocomplete.item
704 };
705
706 Text::new(action.lsp_action.title.clone(), settings.style.text.clone())
707 .with_soft_wrap(false)
708 .contained()
709 .with_style(item_style)
710 .boxed()
711 })
712 .with_cursor_style(CursorStyle::PointingHand)
713 .on_mouse_down(move |cx| {
714 cx.dispatch_action(ConfirmCodeAction(Some(item_ix)));
715 })
716 .boxed(),
717 );
718 }
719 })
720 .with_width_from_item(
721 self.actions
722 .iter()
723 .enumerate()
724 .max_by_key(|(_, action)| action.lsp_action.title.chars().count())
725 .map(|(ix, _)| ix),
726 )
727 .contained()
728 .with_style(settings.style.autocomplete.container)
729 .boxed()
730 }
731}
732
733#[derive(Debug)]
734struct ActiveDiagnosticGroup {
735 primary_range: Range<Anchor>,
736 primary_message: String,
737 blocks: HashMap<BlockId, Diagnostic>,
738 is_valid: bool,
739}
740
741#[derive(Serialize, Deserialize)]
742struct ClipboardSelection {
743 len: usize,
744 is_entire_line: bool,
745}
746
747pub struct NavigationData {
748 anchor: Anchor,
749 offset: usize,
750}
751
752impl Editor {
753 pub fn single_line(build_settings: BuildSettings, cx: &mut ViewContext<Self>) -> Self {
754 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
755 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
756 let mut view = Self::for_buffer(buffer, build_settings, None, cx);
757 view.mode = EditorMode::SingleLine;
758 view
759 }
760
761 pub fn auto_height(
762 max_lines: usize,
763 build_settings: BuildSettings,
764 cx: &mut ViewContext<Self>,
765 ) -> Self {
766 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
767 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
768 let mut view = Self::for_buffer(buffer, build_settings, None, cx);
769 view.mode = EditorMode::AutoHeight { max_lines };
770 view
771 }
772
773 pub fn for_buffer(
774 buffer: ModelHandle<MultiBuffer>,
775 build_settings: BuildSettings,
776 project: Option<ModelHandle<Project>>,
777 cx: &mut ViewContext<Self>,
778 ) -> Self {
779 Self::new(buffer, build_settings, project, cx)
780 }
781
782 pub fn clone(&self, cx: &mut ViewContext<Self>) -> Self {
783 let mut clone = Self::new(
784 self.buffer.clone(),
785 self.build_settings.clone(),
786 self.project.clone(),
787 cx,
788 );
789 clone.scroll_position = self.scroll_position;
790 clone.scroll_top_anchor = self.scroll_top_anchor.clone();
791 clone.nav_history = self
792 .nav_history
793 .as_ref()
794 .map(|nav_history| ItemNavHistory::new(nav_history.history(), &cx.handle()));
795 clone
796 }
797
798 pub fn new(
799 buffer: ModelHandle<MultiBuffer>,
800 build_settings: BuildSettings,
801 project: Option<ModelHandle<Project>>,
802 cx: &mut ViewContext<Self>,
803 ) -> Self {
804 let settings = build_settings(cx);
805 let display_map = cx.add_model(|cx| {
806 DisplayMap::new(
807 buffer.clone(),
808 settings.tab_size,
809 settings.style.text.font_id,
810 settings.style.text.font_size,
811 None,
812 cx,
813 )
814 });
815 cx.observe(&buffer, Self::on_buffer_changed).detach();
816 cx.subscribe(&buffer, Self::on_buffer_event).detach();
817 cx.observe(&display_map, Self::on_display_map_changed)
818 .detach();
819
820 let mut this = Self {
821 handle: cx.weak_handle(),
822 buffer,
823 display_map,
824 selections: Arc::from([]),
825 pending_selection: None,
826 columnar_selection_tail: None,
827 next_selection_id: 0,
828 add_selections_state: None,
829 select_next_state: None,
830 selection_history: Default::default(),
831 autoclose_stack: Default::default(),
832 snippet_stack: Default::default(),
833 select_larger_syntax_node_stack: Vec::new(),
834 active_diagnostics: None,
835 build_settings,
836 project,
837 scroll_position: Vector2F::zero(),
838 scroll_top_anchor: None,
839 autoscroll_request: None,
840 focused: false,
841 show_local_cursors: false,
842 blink_epoch: 0,
843 blinking_paused: false,
844 mode: EditorMode::Full,
845 vertical_scroll_margin: 3.0,
846 placeholder_text: None,
847 highlighted_rows: None,
848 highlighted_ranges: Default::default(),
849 nav_history: None,
850 context_menu: None,
851 completion_tasks: Default::default(),
852 next_completion_id: 0,
853 };
854 let selection = Selection {
855 id: post_inc(&mut this.next_selection_id),
856 start: 0,
857 end: 0,
858 reversed: false,
859 goal: SelectionGoal::None,
860 };
861 this.update_selections(vec![selection], None, cx);
862 this
863 }
864
865 pub fn open_new(
866 workspace: &mut Workspace,
867 _: &workspace::OpenNew,
868 cx: &mut ViewContext<Workspace>,
869 ) {
870 let buffer = cx
871 .add_model(|cx| Buffer::new(0, "", cx).with_language(language::PLAIN_TEXT.clone(), cx));
872 workspace.open_item(BufferItemHandle(buffer), cx);
873 }
874
875 pub fn replica_id(&self, cx: &AppContext) -> ReplicaId {
876 self.buffer.read(cx).replica_id()
877 }
878
879 pub fn buffer(&self) -> &ModelHandle<MultiBuffer> {
880 &self.buffer
881 }
882
883 pub fn title(&self, cx: &AppContext) -> String {
884 let filename = self
885 .buffer()
886 .read(cx)
887 .file(cx)
888 .map(|file| file.file_name(cx));
889 if let Some(name) = filename {
890 name.to_string_lossy().into()
891 } else {
892 "untitled".into()
893 }
894 }
895
896 pub fn snapshot(&mut self, cx: &mut MutableAppContext) -> EditorSnapshot {
897 EditorSnapshot {
898 mode: self.mode,
899 display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
900 scroll_position: self.scroll_position,
901 scroll_top_anchor: self.scroll_top_anchor.clone(),
902 placeholder_text: self.placeholder_text.clone(),
903 is_focused: self
904 .handle
905 .upgrade(cx)
906 .map_or(false, |handle| handle.is_focused(cx)),
907 }
908 }
909
910 pub fn language<'a>(&self, cx: &'a AppContext) -> Option<&'a Arc<Language>> {
911 self.buffer.read(cx).language(cx)
912 }
913
914 pub fn set_placeholder_text(
915 &mut self,
916 placeholder_text: impl Into<Arc<str>>,
917 cx: &mut ViewContext<Self>,
918 ) {
919 self.placeholder_text = Some(placeholder_text.into());
920 cx.notify();
921 }
922
923 pub fn set_vertical_scroll_margin(&mut self, margin_rows: usize, cx: &mut ViewContext<Self>) {
924 self.vertical_scroll_margin = margin_rows as f32;
925 cx.notify();
926 }
927
928 pub fn set_scroll_position(&mut self, scroll_position: Vector2F, cx: &mut ViewContext<Self>) {
929 let map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
930
931 if scroll_position.y() == 0. {
932 self.scroll_top_anchor = None;
933 self.scroll_position = scroll_position;
934 } else {
935 let scroll_top_buffer_offset =
936 DisplayPoint::new(scroll_position.y() as u32, 0).to_offset(&map, Bias::Right);
937 let anchor = map
938 .buffer_snapshot
939 .anchor_at(scroll_top_buffer_offset, Bias::Right);
940 self.scroll_position = vec2f(
941 scroll_position.x(),
942 scroll_position.y() - anchor.to_display_point(&map).row() as f32,
943 );
944 self.scroll_top_anchor = Some(anchor);
945 }
946
947 cx.notify();
948 }
949
950 pub fn scroll_position(&self, cx: &mut ViewContext<Self>) -> Vector2F {
951 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
952 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor)
953 }
954
955 pub fn clamp_scroll_left(&mut self, max: f32) -> bool {
956 if max < self.scroll_position.x() {
957 self.scroll_position.set_x(max);
958 true
959 } else {
960 false
961 }
962 }
963
964 pub fn autoscroll_vertically(
965 &mut self,
966 viewport_height: f32,
967 line_height: f32,
968 cx: &mut ViewContext<Self>,
969 ) -> bool {
970 let visible_lines = viewport_height / line_height;
971 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
972 let mut scroll_position =
973 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor);
974 let max_scroll_top = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
975 (display_map.max_point().row() as f32 - visible_lines + 1.).max(0.)
976 } else {
977 display_map.max_point().row().saturating_sub(1) as f32
978 };
979 if scroll_position.y() > max_scroll_top {
980 scroll_position.set_y(max_scroll_top);
981 self.set_scroll_position(scroll_position, cx);
982 }
983
984 let autoscroll = if let Some(autoscroll) = self.autoscroll_request.take() {
985 autoscroll
986 } else {
987 return false;
988 };
989
990 let first_cursor_top;
991 let last_cursor_bottom;
992 if let Some(highlighted_rows) = &self.highlighted_rows {
993 first_cursor_top = highlighted_rows.start as f32;
994 last_cursor_bottom = first_cursor_top + 1.;
995 } else if autoscroll == Autoscroll::Newest {
996 let newest_selection = self.newest_selection::<Point>(&display_map.buffer_snapshot);
997 first_cursor_top = newest_selection.head().to_display_point(&display_map).row() as f32;
998 last_cursor_bottom = first_cursor_top + 1.;
999 } else {
1000 let selections = self.local_selections::<Point>(cx);
1001 first_cursor_top = selections
1002 .first()
1003 .unwrap()
1004 .head()
1005 .to_display_point(&display_map)
1006 .row() as f32;
1007 last_cursor_bottom = selections
1008 .last()
1009 .unwrap()
1010 .head()
1011 .to_display_point(&display_map)
1012 .row() as f32
1013 + 1.0;
1014 }
1015
1016 let margin = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
1017 0.
1018 } else {
1019 ((visible_lines - (last_cursor_bottom - first_cursor_top)) / 2.0).floor()
1020 };
1021 if margin < 0.0 {
1022 return false;
1023 }
1024
1025 match autoscroll {
1026 Autoscroll::Fit | Autoscroll::Newest => {
1027 let margin = margin.min(self.vertical_scroll_margin);
1028 let target_top = (first_cursor_top - margin).max(0.0);
1029 let target_bottom = last_cursor_bottom + margin;
1030 let start_row = scroll_position.y();
1031 let end_row = start_row + visible_lines;
1032
1033 if target_top < start_row {
1034 scroll_position.set_y(target_top);
1035 self.set_scroll_position(scroll_position, cx);
1036 } else if target_bottom >= end_row {
1037 scroll_position.set_y(target_bottom - visible_lines);
1038 self.set_scroll_position(scroll_position, cx);
1039 }
1040 }
1041 Autoscroll::Center => {
1042 scroll_position.set_y((first_cursor_top - margin).max(0.0));
1043 self.set_scroll_position(scroll_position, cx);
1044 }
1045 }
1046
1047 true
1048 }
1049
1050 pub fn autoscroll_horizontally(
1051 &mut self,
1052 start_row: u32,
1053 viewport_width: f32,
1054 scroll_width: f32,
1055 max_glyph_width: f32,
1056 layouts: &[text_layout::Line],
1057 cx: &mut ViewContext<Self>,
1058 ) -> bool {
1059 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1060 let selections = self.local_selections::<Point>(cx);
1061
1062 let mut target_left;
1063 let mut target_right;
1064
1065 if self.highlighted_rows.is_some() {
1066 target_left = 0.0_f32;
1067 target_right = 0.0_f32;
1068 } else {
1069 target_left = std::f32::INFINITY;
1070 target_right = 0.0_f32;
1071 for selection in selections {
1072 let head = selection.head().to_display_point(&display_map);
1073 if head.row() >= start_row && head.row() < start_row + layouts.len() as u32 {
1074 let start_column = head.column().saturating_sub(3);
1075 let end_column = cmp::min(display_map.line_len(head.row()), head.column() + 3);
1076 target_left = target_left.min(
1077 layouts[(head.row() - start_row) as usize]
1078 .x_for_index(start_column as usize),
1079 );
1080 target_right = target_right.max(
1081 layouts[(head.row() - start_row) as usize].x_for_index(end_column as usize)
1082 + max_glyph_width,
1083 );
1084 }
1085 }
1086 }
1087
1088 target_right = target_right.min(scroll_width);
1089
1090 if target_right - target_left > viewport_width {
1091 return false;
1092 }
1093
1094 let scroll_left = self.scroll_position.x() * max_glyph_width;
1095 let scroll_right = scroll_left + viewport_width;
1096
1097 if target_left < scroll_left {
1098 self.scroll_position.set_x(target_left / max_glyph_width);
1099 true
1100 } else if target_right > scroll_right {
1101 self.scroll_position
1102 .set_x((target_right - viewport_width) / max_glyph_width);
1103 true
1104 } else {
1105 false
1106 }
1107 }
1108
1109 fn select(&mut self, Select(phase): &Select, cx: &mut ViewContext<Self>) {
1110 self.hide_context_menu(cx);
1111
1112 match phase {
1113 SelectPhase::Begin {
1114 position,
1115 add,
1116 click_count,
1117 } => self.begin_selection(*position, *add, *click_count, cx),
1118 SelectPhase::BeginColumnar {
1119 position,
1120 overshoot,
1121 } => self.begin_columnar_selection(*position, *overshoot, cx),
1122 SelectPhase::Extend {
1123 position,
1124 click_count,
1125 } => self.extend_selection(*position, *click_count, cx),
1126 SelectPhase::Update {
1127 position,
1128 overshoot,
1129 scroll_position,
1130 } => self.update_selection(*position, *overshoot, *scroll_position, cx),
1131 SelectPhase::End => self.end_selection(cx),
1132 }
1133 }
1134
1135 fn extend_selection(
1136 &mut self,
1137 position: DisplayPoint,
1138 click_count: usize,
1139 cx: &mut ViewContext<Self>,
1140 ) {
1141 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1142 let tail = self
1143 .newest_selection::<usize>(&display_map.buffer_snapshot)
1144 .tail();
1145 self.begin_selection(position, false, click_count, cx);
1146
1147 let position = position.to_offset(&display_map, Bias::Left);
1148 let tail_anchor = display_map.buffer_snapshot.anchor_before(tail);
1149 let pending = self.pending_selection.as_mut().unwrap();
1150
1151 if position >= tail {
1152 pending.selection.start = tail_anchor.clone();
1153 } else {
1154 pending.selection.end = tail_anchor.clone();
1155 pending.selection.reversed = true;
1156 }
1157
1158 match &mut pending.mode {
1159 SelectMode::Word(range) | SelectMode::Line(range) => {
1160 *range = tail_anchor.clone()..tail_anchor
1161 }
1162 _ => {}
1163 }
1164 }
1165
1166 fn begin_selection(
1167 &mut self,
1168 position: DisplayPoint,
1169 add: bool,
1170 click_count: usize,
1171 cx: &mut ViewContext<Self>,
1172 ) {
1173 if !self.focused {
1174 cx.focus_self();
1175 cx.emit(Event::Activate);
1176 }
1177
1178 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1179 let buffer = &display_map.buffer_snapshot;
1180 let newest_selection = self.newest_anchor_selection().unwrap().clone();
1181
1182 let start;
1183 let end;
1184 let mode;
1185 match click_count {
1186 1 => {
1187 start = buffer.anchor_before(position.to_point(&display_map));
1188 end = start.clone();
1189 mode = SelectMode::Character;
1190 }
1191 2 => {
1192 let range = movement::surrounding_word(&display_map, position);
1193 start = buffer.anchor_before(range.start.to_point(&display_map));
1194 end = buffer.anchor_before(range.end.to_point(&display_map));
1195 mode = SelectMode::Word(start.clone()..end.clone());
1196 }
1197 3 => {
1198 let position = display_map
1199 .clip_point(position, Bias::Left)
1200 .to_point(&display_map);
1201 let line_start = display_map.prev_line_boundary(position).0;
1202 let next_line_start = buffer.clip_point(
1203 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1204 Bias::Left,
1205 );
1206 start = buffer.anchor_before(line_start);
1207 end = buffer.anchor_before(next_line_start);
1208 mode = SelectMode::Line(start.clone()..end.clone());
1209 }
1210 _ => {
1211 start = buffer.anchor_before(0);
1212 end = buffer.anchor_before(buffer.len());
1213 mode = SelectMode::All;
1214 }
1215 }
1216
1217 self.push_to_nav_history(newest_selection.head(), Some(end.to_point(&buffer)), cx);
1218
1219 let selection = Selection {
1220 id: post_inc(&mut self.next_selection_id),
1221 start,
1222 end,
1223 reversed: false,
1224 goal: SelectionGoal::None,
1225 };
1226
1227 if !add {
1228 self.update_selections::<usize>(Vec::new(), None, cx);
1229 } else if click_count > 1 {
1230 // Remove the newest selection since it was only added as part of this multi-click.
1231 let mut selections = self.local_selections(cx);
1232 selections.retain(|selection| selection.id != newest_selection.id);
1233 self.update_selections::<usize>(selections, None, cx)
1234 }
1235
1236 self.pending_selection = Some(PendingSelection { selection, mode });
1237
1238 cx.notify();
1239 }
1240
1241 fn begin_columnar_selection(
1242 &mut self,
1243 position: DisplayPoint,
1244 overshoot: u32,
1245 cx: &mut ViewContext<Self>,
1246 ) {
1247 if !self.focused {
1248 cx.focus_self();
1249 cx.emit(Event::Activate);
1250 }
1251
1252 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1253 let tail = self
1254 .newest_selection::<Point>(&display_map.buffer_snapshot)
1255 .tail();
1256 self.columnar_selection_tail = Some(display_map.buffer_snapshot.anchor_before(tail));
1257
1258 self.select_columns(
1259 tail.to_display_point(&display_map),
1260 position,
1261 overshoot,
1262 &display_map,
1263 cx,
1264 );
1265 }
1266
1267 fn update_selection(
1268 &mut self,
1269 position: DisplayPoint,
1270 overshoot: u32,
1271 scroll_position: Vector2F,
1272 cx: &mut ViewContext<Self>,
1273 ) {
1274 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1275
1276 if let Some(tail) = self.columnar_selection_tail.as_ref() {
1277 let tail = tail.to_display_point(&display_map);
1278 self.select_columns(tail, position, overshoot, &display_map, cx);
1279 } else if let Some(PendingSelection { selection, mode }) = self.pending_selection.as_mut() {
1280 let buffer = self.buffer.read(cx).snapshot(cx);
1281 let head;
1282 let tail;
1283 match mode {
1284 SelectMode::Character => {
1285 head = position.to_point(&display_map);
1286 tail = selection.tail().to_point(&buffer);
1287 }
1288 SelectMode::Word(original_range) => {
1289 let original_display_range = original_range.start.to_display_point(&display_map)
1290 ..original_range.end.to_display_point(&display_map);
1291 let original_buffer_range = original_display_range.start.to_point(&display_map)
1292 ..original_display_range.end.to_point(&display_map);
1293 if movement::is_inside_word(&display_map, position)
1294 || original_display_range.contains(&position)
1295 {
1296 let word_range = movement::surrounding_word(&display_map, position);
1297 if word_range.start < original_display_range.start {
1298 head = word_range.start.to_point(&display_map);
1299 } else {
1300 head = word_range.end.to_point(&display_map);
1301 }
1302 } else {
1303 head = position.to_point(&display_map);
1304 }
1305
1306 if head <= original_buffer_range.start {
1307 tail = original_buffer_range.end;
1308 } else {
1309 tail = original_buffer_range.start;
1310 }
1311 }
1312 SelectMode::Line(original_range) => {
1313 let original_range = original_range.to_point(&display_map.buffer_snapshot);
1314
1315 let position = display_map
1316 .clip_point(position, Bias::Left)
1317 .to_point(&display_map);
1318 let line_start = display_map.prev_line_boundary(position).0;
1319 let next_line_start = buffer.clip_point(
1320 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1321 Bias::Left,
1322 );
1323
1324 if line_start < original_range.start {
1325 head = line_start
1326 } else {
1327 head = next_line_start
1328 }
1329
1330 if head <= original_range.start {
1331 tail = original_range.end;
1332 } else {
1333 tail = original_range.start;
1334 }
1335 }
1336 SelectMode::All => {
1337 return;
1338 }
1339 };
1340
1341 if head < tail {
1342 selection.start = buffer.anchor_before(head);
1343 selection.end = buffer.anchor_before(tail);
1344 selection.reversed = true;
1345 } else {
1346 selection.start = buffer.anchor_before(tail);
1347 selection.end = buffer.anchor_before(head);
1348 selection.reversed = false;
1349 }
1350 } else {
1351 log::error!("update_selection dispatched with no pending selection");
1352 return;
1353 }
1354
1355 self.set_scroll_position(scroll_position, cx);
1356 cx.notify();
1357 }
1358
1359 fn end_selection(&mut self, cx: &mut ViewContext<Self>) {
1360 self.columnar_selection_tail.take();
1361 if self.pending_selection.is_some() {
1362 let selections = self.local_selections::<usize>(cx);
1363 self.update_selections(selections, None, cx);
1364 }
1365 }
1366
1367 fn select_columns(
1368 &mut self,
1369 tail: DisplayPoint,
1370 head: DisplayPoint,
1371 overshoot: u32,
1372 display_map: &DisplaySnapshot,
1373 cx: &mut ViewContext<Self>,
1374 ) {
1375 let start_row = cmp::min(tail.row(), head.row());
1376 let end_row = cmp::max(tail.row(), head.row());
1377 let start_column = cmp::min(tail.column(), head.column() + overshoot);
1378 let end_column = cmp::max(tail.column(), head.column() + overshoot);
1379 let reversed = start_column < tail.column();
1380
1381 let selections = (start_row..=end_row)
1382 .filter_map(|row| {
1383 if start_column <= display_map.line_len(row) && !display_map.is_block_line(row) {
1384 let start = display_map
1385 .clip_point(DisplayPoint::new(row, start_column), Bias::Left)
1386 .to_point(&display_map);
1387 let end = display_map
1388 .clip_point(DisplayPoint::new(row, end_column), Bias::Right)
1389 .to_point(&display_map);
1390 Some(Selection {
1391 id: post_inc(&mut self.next_selection_id),
1392 start,
1393 end,
1394 reversed,
1395 goal: SelectionGoal::None,
1396 })
1397 } else {
1398 None
1399 }
1400 })
1401 .collect::<Vec<_>>();
1402
1403 self.update_selections(selections, None, cx);
1404 cx.notify();
1405 }
1406
1407 pub fn is_selecting(&self) -> bool {
1408 self.pending_selection.is_some() || self.columnar_selection_tail.is_some()
1409 }
1410
1411 pub fn cancel(&mut self, _: &Cancel, cx: &mut ViewContext<Self>) {
1412 if self.hide_context_menu(cx).is_some() {
1413 return;
1414 }
1415
1416 if self.snippet_stack.pop().is_some() {
1417 return;
1418 }
1419
1420 if self.mode != EditorMode::Full {
1421 cx.propagate_action();
1422 return;
1423 }
1424
1425 if self.active_diagnostics.is_some() {
1426 self.dismiss_diagnostics(cx);
1427 } else if let Some(PendingSelection { selection, .. }) = self.pending_selection.take() {
1428 let buffer = self.buffer.read(cx).snapshot(cx);
1429 let selection = Selection {
1430 id: selection.id,
1431 start: selection.start.to_point(&buffer),
1432 end: selection.end.to_point(&buffer),
1433 reversed: selection.reversed,
1434 goal: selection.goal,
1435 };
1436 if self.local_selections::<Point>(cx).is_empty() {
1437 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
1438 }
1439 } else {
1440 let buffer = self.buffer.read(cx).snapshot(cx);
1441 let mut oldest_selection = self.oldest_selection::<usize>(&buffer);
1442 if self.selection_count() == 1 {
1443 if oldest_selection.is_empty() {
1444 cx.propagate_action();
1445 return;
1446 }
1447
1448 oldest_selection.start = oldest_selection.head().clone();
1449 oldest_selection.end = oldest_selection.head().clone();
1450 }
1451 self.update_selections(vec![oldest_selection], Some(Autoscroll::Fit), cx);
1452 }
1453 }
1454
1455 #[cfg(any(test, feature = "test-support"))]
1456 pub fn selected_ranges<D: TextDimension + Ord + Sub<D, Output = D>>(
1457 &self,
1458 cx: &mut MutableAppContext,
1459 ) -> Vec<Range<D>> {
1460 self.local_selections::<D>(cx)
1461 .iter()
1462 .map(|s| {
1463 if s.reversed {
1464 s.end.clone()..s.start.clone()
1465 } else {
1466 s.start.clone()..s.end.clone()
1467 }
1468 })
1469 .collect()
1470 }
1471
1472 #[cfg(any(test, feature = "test-support"))]
1473 pub fn selected_display_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
1474 let display_map = self
1475 .display_map
1476 .update(cx, |display_map, cx| display_map.snapshot(cx));
1477 self.selections
1478 .iter()
1479 .chain(
1480 self.pending_selection
1481 .as_ref()
1482 .map(|pending| &pending.selection),
1483 )
1484 .map(|s| {
1485 if s.reversed {
1486 s.end.to_display_point(&display_map)..s.start.to_display_point(&display_map)
1487 } else {
1488 s.start.to_display_point(&display_map)..s.end.to_display_point(&display_map)
1489 }
1490 })
1491 .collect()
1492 }
1493
1494 pub fn select_ranges<I, T>(
1495 &mut self,
1496 ranges: I,
1497 autoscroll: Option<Autoscroll>,
1498 cx: &mut ViewContext<Self>,
1499 ) where
1500 I: IntoIterator<Item = Range<T>>,
1501 T: ToOffset,
1502 {
1503 let buffer = self.buffer.read(cx).snapshot(cx);
1504 let selections = ranges
1505 .into_iter()
1506 .map(|range| {
1507 let mut start = range.start.to_offset(&buffer);
1508 let mut end = range.end.to_offset(&buffer);
1509 let reversed = if start > end {
1510 mem::swap(&mut start, &mut end);
1511 true
1512 } else {
1513 false
1514 };
1515 Selection {
1516 id: post_inc(&mut self.next_selection_id),
1517 start,
1518 end,
1519 reversed,
1520 goal: SelectionGoal::None,
1521 }
1522 })
1523 .collect::<Vec<_>>();
1524 self.update_selections(selections, autoscroll, cx);
1525 }
1526
1527 #[cfg(any(test, feature = "test-support"))]
1528 pub fn select_display_ranges<'a, T>(&mut self, ranges: T, cx: &mut ViewContext<Self>)
1529 where
1530 T: IntoIterator<Item = &'a Range<DisplayPoint>>,
1531 {
1532 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1533 let selections = ranges
1534 .into_iter()
1535 .map(|range| {
1536 let mut start = range.start;
1537 let mut end = range.end;
1538 let reversed = if start > end {
1539 mem::swap(&mut start, &mut end);
1540 true
1541 } else {
1542 false
1543 };
1544 Selection {
1545 id: post_inc(&mut self.next_selection_id),
1546 start: start.to_point(&display_map),
1547 end: end.to_point(&display_map),
1548 reversed,
1549 goal: SelectionGoal::None,
1550 }
1551 })
1552 .collect();
1553 self.update_selections(selections, None, cx);
1554 }
1555
1556 pub fn handle_input(&mut self, action: &Input, cx: &mut ViewContext<Self>) {
1557 let text = action.0.as_ref();
1558 if !self.skip_autoclose_end(text, cx) {
1559 self.start_transaction(cx);
1560 self.insert(text, cx);
1561 self.autoclose_pairs(cx);
1562 self.end_transaction(cx);
1563 self.trigger_completion_on_input(text, cx);
1564 }
1565 }
1566
1567 pub fn newline(&mut self, _: &Newline, cx: &mut ViewContext<Self>) {
1568 self.start_transaction(cx);
1569 let mut old_selections = SmallVec::<[_; 32]>::new();
1570 {
1571 let selections = self.local_selections::<usize>(cx);
1572 let buffer = self.buffer.read(cx).snapshot(cx);
1573 for selection in selections.iter() {
1574 let start_point = selection.start.to_point(&buffer);
1575 let indent = buffer
1576 .indent_column_for_line(start_point.row)
1577 .min(start_point.column);
1578 let start = selection.start;
1579 let end = selection.end;
1580
1581 let mut insert_extra_newline = false;
1582 if let Some(language) = buffer.language() {
1583 let leading_whitespace_len = buffer
1584 .reversed_chars_at(start)
1585 .take_while(|c| c.is_whitespace() && *c != '\n')
1586 .map(|c| c.len_utf8())
1587 .sum::<usize>();
1588
1589 let trailing_whitespace_len = buffer
1590 .chars_at(end)
1591 .take_while(|c| c.is_whitespace() && *c != '\n')
1592 .map(|c| c.len_utf8())
1593 .sum::<usize>();
1594
1595 insert_extra_newline = language.brackets().iter().any(|pair| {
1596 let pair_start = pair.start.trim_end();
1597 let pair_end = pair.end.trim_start();
1598
1599 pair.newline
1600 && buffer.contains_str_at(end + trailing_whitespace_len, pair_end)
1601 && buffer.contains_str_at(
1602 (start - leading_whitespace_len).saturating_sub(pair_start.len()),
1603 pair_start,
1604 )
1605 });
1606 }
1607
1608 old_selections.push((
1609 selection.id,
1610 buffer.anchor_after(end),
1611 start..end,
1612 indent,
1613 insert_extra_newline,
1614 ));
1615 }
1616 }
1617
1618 self.buffer.update(cx, |buffer, cx| {
1619 let mut delta = 0_isize;
1620 let mut pending_edit: Option<PendingEdit> = None;
1621 for (_, _, range, indent, insert_extra_newline) in &old_selections {
1622 if pending_edit.as_ref().map_or(false, |pending| {
1623 pending.indent != *indent
1624 || pending.insert_extra_newline != *insert_extra_newline
1625 }) {
1626 let pending = pending_edit.take().unwrap();
1627 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1628 new_text.push('\n');
1629 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1630 if pending.insert_extra_newline {
1631 new_text = new_text.repeat(2);
1632 }
1633 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1634 delta += pending.delta;
1635 }
1636
1637 let start = (range.start as isize + delta) as usize;
1638 let end = (range.end as isize + delta) as usize;
1639 let mut text_len = *indent as usize + 1;
1640 if *insert_extra_newline {
1641 text_len *= 2;
1642 }
1643
1644 let pending = pending_edit.get_or_insert_with(Default::default);
1645 pending.delta += text_len as isize - (end - start) as isize;
1646 pending.indent = *indent;
1647 pending.insert_extra_newline = *insert_extra_newline;
1648 pending.ranges.push(start..end);
1649 }
1650
1651 let pending = pending_edit.unwrap();
1652 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1653 new_text.push('\n');
1654 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1655 if pending.insert_extra_newline {
1656 new_text = new_text.repeat(2);
1657 }
1658 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1659
1660 let buffer = buffer.read(cx);
1661 self.selections = self
1662 .selections
1663 .iter()
1664 .cloned()
1665 .zip(old_selections)
1666 .map(
1667 |(mut new_selection, (_, end_anchor, _, _, insert_extra_newline))| {
1668 let mut cursor = end_anchor.to_point(&buffer);
1669 if insert_extra_newline {
1670 cursor.row -= 1;
1671 cursor.column = buffer.line_len(cursor.row);
1672 }
1673 let anchor = buffer.anchor_after(cursor);
1674 new_selection.start = anchor.clone();
1675 new_selection.end = anchor;
1676 new_selection
1677 },
1678 )
1679 .collect();
1680 });
1681
1682 self.request_autoscroll(Autoscroll::Fit, cx);
1683 self.end_transaction(cx);
1684
1685 #[derive(Default)]
1686 struct PendingEdit {
1687 indent: u32,
1688 insert_extra_newline: bool,
1689 delta: isize,
1690 ranges: SmallVec<[Range<usize>; 32]>,
1691 }
1692 }
1693
1694 pub fn insert(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1695 self.start_transaction(cx);
1696
1697 let old_selections = self.local_selections::<usize>(cx);
1698 let selection_anchors = self.buffer.update(cx, |buffer, cx| {
1699 let anchors = {
1700 let snapshot = buffer.read(cx);
1701 old_selections
1702 .iter()
1703 .map(|s| (s.id, s.goal, snapshot.anchor_after(s.end)))
1704 .collect::<Vec<_>>()
1705 };
1706 let edit_ranges = old_selections.iter().map(|s| s.start..s.end);
1707 buffer.edit_with_autoindent(edit_ranges, text, cx);
1708 anchors
1709 });
1710
1711 let selections = {
1712 let snapshot = self.buffer.read(cx).read(cx);
1713 selection_anchors
1714 .into_iter()
1715 .map(|(id, goal, position)| {
1716 let position = position.to_offset(&snapshot);
1717 Selection {
1718 id,
1719 start: position,
1720 end: position,
1721 goal,
1722 reversed: false,
1723 }
1724 })
1725 .collect()
1726 };
1727 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1728 self.end_transaction(cx);
1729 }
1730
1731 fn trigger_completion_on_input(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1732 if let Some(selection) = self.newest_anchor_selection() {
1733 if self
1734 .buffer
1735 .read(cx)
1736 .is_completion_trigger(selection.head(), text, cx)
1737 {
1738 self.show_completions(&ShowCompletions, cx);
1739 } else {
1740 self.hide_context_menu(cx);
1741 }
1742 }
1743 }
1744
1745 fn autoclose_pairs(&mut self, cx: &mut ViewContext<Self>) {
1746 let selections = self.local_selections::<usize>(cx);
1747 let mut bracket_pair_state = None;
1748 let mut new_selections = None;
1749 self.buffer.update(cx, |buffer, cx| {
1750 let mut snapshot = buffer.snapshot(cx);
1751 let left_biased_selections = selections
1752 .iter()
1753 .map(|selection| Selection {
1754 id: selection.id,
1755 start: snapshot.anchor_before(selection.start),
1756 end: snapshot.anchor_before(selection.end),
1757 reversed: selection.reversed,
1758 goal: selection.goal,
1759 })
1760 .collect::<Vec<_>>();
1761
1762 let autoclose_pair = snapshot.language().and_then(|language| {
1763 let first_selection_start = selections.first().unwrap().start;
1764 let pair = language.brackets().iter().find(|pair| {
1765 snapshot.contains_str_at(
1766 first_selection_start.saturating_sub(pair.start.len()),
1767 &pair.start,
1768 )
1769 });
1770 pair.and_then(|pair| {
1771 let should_autoclose = selections[1..].iter().all(|selection| {
1772 snapshot.contains_str_at(
1773 selection.start.saturating_sub(pair.start.len()),
1774 &pair.start,
1775 )
1776 });
1777
1778 if should_autoclose {
1779 Some(pair.clone())
1780 } else {
1781 None
1782 }
1783 })
1784 });
1785
1786 if let Some(pair) = autoclose_pair {
1787 let selection_ranges = selections
1788 .iter()
1789 .map(|selection| {
1790 let start = selection.start.to_offset(&snapshot);
1791 start..start
1792 })
1793 .collect::<SmallVec<[_; 32]>>();
1794
1795 buffer.edit(selection_ranges, &pair.end, cx);
1796 snapshot = buffer.snapshot(cx);
1797
1798 new_selections = Some(
1799 self.resolve_selections::<usize, _>(left_biased_selections.iter(), &snapshot)
1800 .collect::<Vec<_>>(),
1801 );
1802
1803 if pair.end.len() == 1 {
1804 let mut delta = 0;
1805 bracket_pair_state = Some(BracketPairState {
1806 ranges: selections
1807 .iter()
1808 .map(move |selection| {
1809 let offset = selection.start + delta;
1810 delta += 1;
1811 snapshot.anchor_before(offset)..snapshot.anchor_after(offset)
1812 })
1813 .collect(),
1814 pair,
1815 });
1816 }
1817 }
1818 });
1819
1820 if let Some(new_selections) = new_selections {
1821 self.update_selections(new_selections, None, cx);
1822 }
1823 if let Some(bracket_pair_state) = bracket_pair_state {
1824 self.autoclose_stack.push(bracket_pair_state);
1825 }
1826 }
1827
1828 fn skip_autoclose_end(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
1829 let old_selections = self.local_selections::<usize>(cx);
1830 let autoclose_pair = if let Some(autoclose_pair) = self.autoclose_stack.last() {
1831 autoclose_pair
1832 } else {
1833 return false;
1834 };
1835 if text != autoclose_pair.pair.end {
1836 return false;
1837 }
1838
1839 debug_assert_eq!(old_selections.len(), autoclose_pair.ranges.len());
1840
1841 let buffer = self.buffer.read(cx).snapshot(cx);
1842 if old_selections
1843 .iter()
1844 .zip(autoclose_pair.ranges.iter().map(|r| r.to_offset(&buffer)))
1845 .all(|(selection, autoclose_range)| {
1846 let autoclose_range_end = autoclose_range.end.to_offset(&buffer);
1847 selection.is_empty() && selection.start == autoclose_range_end
1848 })
1849 {
1850 let new_selections = old_selections
1851 .into_iter()
1852 .map(|selection| {
1853 let cursor = selection.start + 1;
1854 Selection {
1855 id: selection.id,
1856 start: cursor,
1857 end: cursor,
1858 reversed: false,
1859 goal: SelectionGoal::None,
1860 }
1861 })
1862 .collect();
1863 self.autoclose_stack.pop();
1864 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1865 true
1866 } else {
1867 false
1868 }
1869 }
1870
1871 fn completion_query(buffer: &MultiBufferSnapshot, position: impl ToOffset) -> Option<String> {
1872 let offset = position.to_offset(buffer);
1873 let (word_range, kind) = buffer.surrounding_word(offset);
1874 if offset > word_range.start && kind == Some(CharKind::Word) {
1875 Some(
1876 buffer
1877 .text_for_range(word_range.start..offset)
1878 .collect::<String>(),
1879 )
1880 } else {
1881 None
1882 }
1883 }
1884
1885 fn show_completions(&mut self, _: &ShowCompletions, cx: &mut ViewContext<Self>) {
1886 let project = if let Some(project) = self.project.clone() {
1887 project
1888 } else {
1889 return;
1890 };
1891
1892 let position = if let Some(selection) = self.newest_anchor_selection() {
1893 selection.head()
1894 } else {
1895 return;
1896 };
1897 let (buffer, buffer_position) = self
1898 .buffer
1899 .read(cx)
1900 .text_anchor_for_position(position.clone(), cx);
1901
1902 let query = Self::completion_query(&self.buffer.read(cx).read(cx), position.clone());
1903 let completions = project.update(cx, |project, cx| {
1904 project.completions(&buffer, buffer_position.clone(), cx)
1905 });
1906
1907 let id = post_inc(&mut self.next_completion_id);
1908 let task = cx.spawn_weak(|this, mut cx| {
1909 async move {
1910 let completions = completions.await?;
1911 if completions.is_empty() {
1912 return Ok(());
1913 }
1914
1915 let mut menu = CompletionsMenu {
1916 id,
1917 initial_position: position,
1918 match_candidates: completions
1919 .iter()
1920 .enumerate()
1921 .map(|(id, completion)| {
1922 StringMatchCandidate::new(
1923 id,
1924 completion.label.text[completion.label.filter_range.clone()].into(),
1925 )
1926 })
1927 .collect(),
1928 buffer,
1929 completions: completions.into(),
1930 matches: Vec::new().into(),
1931 selected_item: 0,
1932 list: Default::default(),
1933 };
1934
1935 menu.filter(query.as_deref(), cx.background()).await;
1936
1937 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
1938 this.update(&mut cx, |this, cx| {
1939 match this.context_menu.as_ref() {
1940 None => {}
1941 Some(ContextMenu::Completions(prev_menu)) => {
1942 if prev_menu.id > menu.id {
1943 return;
1944 }
1945 }
1946 _ => return,
1947 }
1948
1949 this.completion_tasks.retain(|(id, _)| *id > menu.id);
1950 if this.focused {
1951 this.show_context_menu(ContextMenu::Completions(menu), cx);
1952 }
1953
1954 cx.notify();
1955 });
1956 }
1957 Ok::<_, anyhow::Error>(())
1958 }
1959 .log_err()
1960 });
1961 self.completion_tasks.push((id, task));
1962 }
1963
1964 pub fn confirm_completion(
1965 &mut self,
1966 ConfirmCompletion(completion_ix): &ConfirmCompletion,
1967 cx: &mut ViewContext<Self>,
1968 ) -> Option<Task<Result<()>>> {
1969 use language::ToOffset as _;
1970
1971 let completions_menu = if let ContextMenu::Completions(menu) = self.hide_context_menu(cx)? {
1972 menu
1973 } else {
1974 return None;
1975 };
1976
1977 let mat = completions_menu
1978 .matches
1979 .get(completion_ix.unwrap_or(completions_menu.selected_item))?;
1980 let buffer_handle = completions_menu.buffer;
1981 let completion = completions_menu.completions.get(mat.candidate_id)?;
1982
1983 let snippet;
1984 let text;
1985 if completion.is_snippet() {
1986 snippet = Some(Snippet::parse(&completion.new_text).log_err()?);
1987 text = snippet.as_ref().unwrap().text.clone();
1988 } else {
1989 snippet = None;
1990 text = completion.new_text.clone();
1991 };
1992 let buffer = buffer_handle.read(cx);
1993 let old_range = completion.old_range.to_offset(&buffer);
1994 let old_text = buffer.text_for_range(old_range.clone()).collect::<String>();
1995
1996 let selections = self.local_selections::<usize>(cx);
1997 let newest_selection = self.newest_anchor_selection()?;
1998 if newest_selection.start.buffer_id != buffer_handle.id() {
1999 return None;
2000 }
2001
2002 let lookbehind = newest_selection
2003 .start
2004 .text_anchor
2005 .to_offset(buffer)
2006 .saturating_sub(old_range.start);
2007 let lookahead = old_range
2008 .end
2009 .saturating_sub(newest_selection.end.text_anchor.to_offset(buffer));
2010 let mut common_prefix_len = old_text
2011 .bytes()
2012 .zip(text.bytes())
2013 .take_while(|(a, b)| a == b)
2014 .count();
2015
2016 let snapshot = self.buffer.read(cx).snapshot(cx);
2017 let mut ranges = Vec::new();
2018 for selection in &selections {
2019 if snapshot.contains_str_at(selection.start.saturating_sub(lookbehind), &old_text) {
2020 let start = selection.start.saturating_sub(lookbehind);
2021 let end = selection.end + lookahead;
2022 ranges.push(start + common_prefix_len..end);
2023 } else {
2024 common_prefix_len = 0;
2025 ranges.clear();
2026 ranges.extend(selections.iter().map(|s| {
2027 if s.id == newest_selection.id {
2028 old_range.clone()
2029 } else {
2030 s.start..s.end
2031 }
2032 }));
2033 break;
2034 }
2035 }
2036 let text = &text[common_prefix_len..];
2037
2038 self.start_transaction(cx);
2039 if let Some(mut snippet) = snippet {
2040 snippet.text = text.to_string();
2041 for tabstop in snippet.tabstops.iter_mut().flatten() {
2042 tabstop.start -= common_prefix_len as isize;
2043 tabstop.end -= common_prefix_len as isize;
2044 }
2045
2046 self.insert_snippet(&ranges, snippet, cx).log_err();
2047 } else {
2048 self.buffer.update(cx, |buffer, cx| {
2049 buffer.edit_with_autoindent(ranges, text, cx);
2050 });
2051 }
2052 self.end_transaction(cx);
2053
2054 let project = self.project.clone()?;
2055 let apply_edits = project.update(cx, |project, cx| {
2056 project.apply_additional_edits_for_completion(
2057 buffer_handle,
2058 completion.clone(),
2059 true,
2060 cx,
2061 )
2062 });
2063 Some(cx.foreground().spawn(async move {
2064 apply_edits.await?;
2065 Ok(())
2066 }))
2067 }
2068
2069 fn show_code_actions(&mut self, _: &ShowCodeActions, cx: &mut ViewContext<Self>) {
2070 let head = if let Some(selection) = self.newest_anchor_selection() {
2071 selection.head()
2072 } else {
2073 return;
2074 };
2075 let project = if let Some(project) = self.project.clone() {
2076 project
2077 } else {
2078 return;
2079 };
2080
2081 let (buffer, head) = self.buffer.read(cx).text_anchor_for_position(head, cx);
2082 let actions = project.update(cx, |project, cx| project.code_actions(&buffer, head, cx));
2083
2084 cx.spawn(|this, mut cx| async move {
2085 let actions = actions.await?;
2086 if !actions.is_empty() {
2087 this.update(&mut cx, |this, cx| {
2088 if this.focused {
2089 this.show_context_menu(
2090 ContextMenu::CodeActions(CodeActionsMenu {
2091 buffer,
2092 actions: actions.into(),
2093 selected_item: 0,
2094 list: UniformListState::default(),
2095 }),
2096 cx,
2097 );
2098 }
2099 });
2100 }
2101 Ok::<_, anyhow::Error>(())
2102 })
2103 .detach_and_log_err(cx);
2104 }
2105
2106 fn confirm_code_action(
2107 workspace: &mut Workspace,
2108 ConfirmCodeAction(action_ix): &ConfirmCodeAction,
2109 cx: &mut ViewContext<Workspace>,
2110 ) -> Option<Task<Result<()>>> {
2111 let editor = workspace.active_item(cx)?.act_as::<Editor>(cx)?;
2112 let actions_menu = if let ContextMenu::CodeActions(menu) =
2113 editor.update(cx, |editor, cx| editor.hide_context_menu(cx))?
2114 {
2115 menu
2116 } else {
2117 return None;
2118 };
2119 let action_ix = action_ix.unwrap_or(actions_menu.selected_item);
2120 let action = actions_menu.actions.get(action_ix)?.clone();
2121 let buffer = actions_menu.buffer;
2122
2123 let apply_code_actions = workspace.project().clone().update(cx, |project, cx| {
2124 project.apply_code_action(buffer, action, true, cx)
2125 });
2126 Some(cx.spawn(|workspace, mut cx| async move {
2127 let project_transaction = apply_code_actions.await?;
2128
2129 // TODO: replace this with opening a single tab that is a multibuffer
2130 workspace.update(&mut cx, |workspace, cx| {
2131 for (buffer, _) in project_transaction.0 {
2132 workspace.open_item(BufferItemHandle(buffer), cx);
2133 }
2134 });
2135
2136 Ok(())
2137 }))
2138 }
2139
2140 pub fn showing_context_menu(&self) -> bool {
2141 self.context_menu
2142 .as_ref()
2143 .map_or(false, |menu| menu.visible())
2144 }
2145
2146 pub fn render_context_menu(&self, cx: &AppContext) -> Option<ElementBox> {
2147 self.context_menu
2148 .as_ref()
2149 .map(|menu| menu.render(self.build_settings.clone(), cx))
2150 }
2151
2152 fn show_context_menu(&mut self, menu: ContextMenu, cx: &mut ViewContext<Self>) {
2153 if !matches!(menu, ContextMenu::Completions(_)) {
2154 self.completion_tasks.clear();
2155 }
2156 self.context_menu = Some(menu);
2157 cx.notify()
2158 }
2159
2160 fn hide_context_menu(&mut self, cx: &mut ViewContext<Self>) -> Option<ContextMenu> {
2161 cx.notify();
2162 self.completion_tasks.clear();
2163 self.context_menu.take()
2164 }
2165
2166 pub fn insert_snippet(
2167 &mut self,
2168 insertion_ranges: &[Range<usize>],
2169 snippet: Snippet,
2170 cx: &mut ViewContext<Self>,
2171 ) -> Result<()> {
2172 let tabstops = self.buffer.update(cx, |buffer, cx| {
2173 buffer.edit_with_autoindent(insertion_ranges.iter().cloned(), &snippet.text, cx);
2174
2175 let snapshot = &*buffer.read(cx);
2176 let snippet = &snippet;
2177 snippet
2178 .tabstops
2179 .iter()
2180 .map(|tabstop| {
2181 let mut tabstop_ranges = tabstop
2182 .iter()
2183 .flat_map(|tabstop_range| {
2184 let mut delta = 0 as isize;
2185 insertion_ranges.iter().map(move |insertion_range| {
2186 let insertion_start = insertion_range.start as isize + delta;
2187 delta +=
2188 snippet.text.len() as isize - insertion_range.len() as isize;
2189
2190 let start = snapshot.anchor_before(
2191 (insertion_start + tabstop_range.start) as usize,
2192 );
2193 let end = snapshot
2194 .anchor_after((insertion_start + tabstop_range.end) as usize);
2195 start..end
2196 })
2197 })
2198 .collect::<Vec<_>>();
2199 tabstop_ranges
2200 .sort_unstable_by(|a, b| a.start.cmp(&b.start, snapshot).unwrap());
2201 tabstop_ranges
2202 })
2203 .collect::<Vec<_>>()
2204 });
2205
2206 if let Some(tabstop) = tabstops.first() {
2207 self.select_ranges(tabstop.iter().cloned(), Some(Autoscroll::Fit), cx);
2208 self.snippet_stack.push(SnippetState {
2209 active_index: 0,
2210 ranges: tabstops,
2211 });
2212 }
2213
2214 Ok(())
2215 }
2216
2217 pub fn move_to_next_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) -> bool {
2218 self.move_to_snippet_tabstop(Bias::Right, cx)
2219 }
2220
2221 pub fn move_to_prev_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) {
2222 self.move_to_snippet_tabstop(Bias::Left, cx);
2223 }
2224
2225 pub fn move_to_snippet_tabstop(&mut self, bias: Bias, cx: &mut ViewContext<Self>) -> bool {
2226 let buffer = self.buffer.read(cx).snapshot(cx);
2227
2228 if let Some(snippet) = self.snippet_stack.last_mut() {
2229 match bias {
2230 Bias::Left => {
2231 if snippet.active_index > 0 {
2232 snippet.active_index -= 1;
2233 } else {
2234 return false;
2235 }
2236 }
2237 Bias::Right => {
2238 if snippet.active_index + 1 < snippet.ranges.len() {
2239 snippet.active_index += 1;
2240 } else {
2241 return false;
2242 }
2243 }
2244 }
2245 if let Some(current_ranges) = snippet.ranges.get(snippet.active_index) {
2246 let new_selections = current_ranges
2247 .iter()
2248 .map(|new_range| {
2249 let new_range = new_range.to_offset(&buffer);
2250 Selection {
2251 id: post_inc(&mut self.next_selection_id),
2252 start: new_range.start,
2253 end: new_range.end,
2254 reversed: false,
2255 goal: SelectionGoal::None,
2256 }
2257 })
2258 .collect();
2259
2260 // Remove the snippet state when moving to the last tabstop.
2261 if snippet.active_index + 1 == snippet.ranges.len() {
2262 self.snippet_stack.pop();
2263 }
2264
2265 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2266 return true;
2267 }
2268 self.snippet_stack.pop();
2269 }
2270
2271 false
2272 }
2273
2274 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
2275 self.start_transaction(cx);
2276 self.select_all(&SelectAll, cx);
2277 self.insert("", cx);
2278 self.end_transaction(cx);
2279 }
2280
2281 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
2282 self.start_transaction(cx);
2283 let mut selections = self.local_selections::<Point>(cx);
2284 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2285 for selection in &mut selections {
2286 if selection.is_empty() {
2287 let head = selection.head().to_display_point(&display_map);
2288 let cursor = movement::left(&display_map, head)
2289 .unwrap()
2290 .to_point(&display_map);
2291 selection.set_head(cursor);
2292 selection.goal = SelectionGoal::None;
2293 }
2294 }
2295 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2296 self.insert("", cx);
2297 self.end_transaction(cx);
2298 }
2299
2300 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
2301 self.start_transaction(cx);
2302 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2303 let mut selections = self.local_selections::<Point>(cx);
2304 for selection in &mut selections {
2305 if selection.is_empty() {
2306 let head = selection.head().to_display_point(&display_map);
2307 let cursor = movement::right(&display_map, head)
2308 .unwrap()
2309 .to_point(&display_map);
2310 selection.set_head(cursor);
2311 selection.goal = SelectionGoal::None;
2312 }
2313 }
2314 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2315 self.insert(&"", cx);
2316 self.end_transaction(cx);
2317 }
2318
2319 pub fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
2320 if self.move_to_next_snippet_tabstop(cx) {
2321 return;
2322 }
2323
2324 self.start_transaction(cx);
2325 let tab_size = (self.build_settings)(cx).tab_size;
2326 let mut selections = self.local_selections::<Point>(cx);
2327 let mut last_indent = None;
2328 self.buffer.update(cx, |buffer, cx| {
2329 for selection in &mut selections {
2330 if selection.is_empty() {
2331 let char_column = buffer
2332 .read(cx)
2333 .text_for_range(Point::new(selection.start.row, 0)..selection.start)
2334 .flat_map(str::chars)
2335 .count();
2336 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
2337 buffer.edit(
2338 [selection.start..selection.start],
2339 " ".repeat(chars_to_next_tab_stop),
2340 cx,
2341 );
2342 selection.start.column += chars_to_next_tab_stop as u32;
2343 selection.end = selection.start;
2344 } else {
2345 let mut start_row = selection.start.row;
2346 let mut end_row = selection.end.row + 1;
2347
2348 // If a selection ends at the beginning of a line, don't indent
2349 // that last line.
2350 if selection.end.column == 0 {
2351 end_row -= 1;
2352 }
2353
2354 // Avoid re-indenting a row that has already been indented by a
2355 // previous selection, but still update this selection's column
2356 // to reflect that indentation.
2357 if let Some((last_indent_row, last_indent_len)) = last_indent {
2358 if last_indent_row == selection.start.row {
2359 selection.start.column += last_indent_len;
2360 start_row += 1;
2361 }
2362 if last_indent_row == selection.end.row {
2363 selection.end.column += last_indent_len;
2364 }
2365 }
2366
2367 for row in start_row..end_row {
2368 let indent_column = buffer.read(cx).indent_column_for_line(row) as usize;
2369 let columns_to_next_tab_stop = tab_size - (indent_column % tab_size);
2370 let row_start = Point::new(row, 0);
2371 buffer.edit(
2372 [row_start..row_start],
2373 " ".repeat(columns_to_next_tab_stop),
2374 cx,
2375 );
2376
2377 // Update this selection's endpoints to reflect the indentation.
2378 if row == selection.start.row {
2379 selection.start.column += columns_to_next_tab_stop as u32;
2380 }
2381 if row == selection.end.row {
2382 selection.end.column += columns_to_next_tab_stop as u32;
2383 }
2384
2385 last_indent = Some((row, columns_to_next_tab_stop as u32));
2386 }
2387 }
2388 }
2389 });
2390
2391 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2392 self.end_transaction(cx);
2393 }
2394
2395 pub fn outdent(&mut self, _: &Outdent, cx: &mut ViewContext<Self>) {
2396 if !self.snippet_stack.is_empty() {
2397 self.move_to_prev_snippet_tabstop(cx);
2398 return;
2399 }
2400
2401 self.start_transaction(cx);
2402 let tab_size = (self.build_settings)(cx).tab_size;
2403 let selections = self.local_selections::<Point>(cx);
2404 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2405 let mut deletion_ranges = Vec::new();
2406 let mut last_outdent = None;
2407 {
2408 let buffer = self.buffer.read(cx).read(cx);
2409 for selection in &selections {
2410 let mut rows = selection.spanned_rows(false, &display_map);
2411
2412 // Avoid re-outdenting a row that has already been outdented by a
2413 // previous selection.
2414 if let Some(last_row) = last_outdent {
2415 if last_row == rows.start {
2416 rows.start += 1;
2417 }
2418 }
2419
2420 for row in rows {
2421 let column = buffer.indent_column_for_line(row) as usize;
2422 if column > 0 {
2423 let mut deletion_len = (column % tab_size) as u32;
2424 if deletion_len == 0 {
2425 deletion_len = tab_size as u32;
2426 }
2427 deletion_ranges.push(Point::new(row, 0)..Point::new(row, deletion_len));
2428 last_outdent = Some(row);
2429 }
2430 }
2431 }
2432 }
2433 self.buffer.update(cx, |buffer, cx| {
2434 buffer.edit(deletion_ranges, "", cx);
2435 });
2436
2437 self.update_selections(
2438 self.local_selections::<usize>(cx),
2439 Some(Autoscroll::Fit),
2440 cx,
2441 );
2442 self.end_transaction(cx);
2443 }
2444
2445 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
2446 self.start_transaction(cx);
2447
2448 let selections = self.local_selections::<Point>(cx);
2449 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2450 let buffer = self.buffer.read(cx).snapshot(cx);
2451
2452 let mut new_cursors = Vec::new();
2453 let mut edit_ranges = Vec::new();
2454 let mut selections = selections.iter().peekable();
2455 while let Some(selection) = selections.next() {
2456 let mut rows = selection.spanned_rows(false, &display_map);
2457 let goal_display_column = selection.head().to_display_point(&display_map).column();
2458
2459 // Accumulate contiguous regions of rows that we want to delete.
2460 while let Some(next_selection) = selections.peek() {
2461 let next_rows = next_selection.spanned_rows(false, &display_map);
2462 if next_rows.start <= rows.end {
2463 rows.end = next_rows.end;
2464 selections.next().unwrap();
2465 } else {
2466 break;
2467 }
2468 }
2469
2470 let mut edit_start = Point::new(rows.start, 0).to_offset(&buffer);
2471 let edit_end;
2472 let cursor_buffer_row;
2473 if buffer.max_point().row >= rows.end {
2474 // If there's a line after the range, delete the \n from the end of the row range
2475 // and position the cursor on the next line.
2476 edit_end = Point::new(rows.end, 0).to_offset(&buffer);
2477 cursor_buffer_row = rows.end;
2478 } else {
2479 // If there isn't a line after the range, delete the \n from the line before the
2480 // start of the row range and position the cursor there.
2481 edit_start = edit_start.saturating_sub(1);
2482 edit_end = buffer.len();
2483 cursor_buffer_row = rows.start.saturating_sub(1);
2484 }
2485
2486 let mut cursor = Point::new(cursor_buffer_row, 0).to_display_point(&display_map);
2487 *cursor.column_mut() =
2488 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
2489
2490 new_cursors.push((
2491 selection.id,
2492 buffer.anchor_after(cursor.to_point(&display_map)),
2493 ));
2494 edit_ranges.push(edit_start..edit_end);
2495 }
2496
2497 let buffer = self.buffer.update(cx, |buffer, cx| {
2498 buffer.edit(edit_ranges, "", cx);
2499 buffer.snapshot(cx)
2500 });
2501 let new_selections = new_cursors
2502 .into_iter()
2503 .map(|(id, cursor)| {
2504 let cursor = cursor.to_point(&buffer);
2505 Selection {
2506 id,
2507 start: cursor,
2508 end: cursor,
2509 reversed: false,
2510 goal: SelectionGoal::None,
2511 }
2512 })
2513 .collect();
2514 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2515 self.end_transaction(cx);
2516 }
2517
2518 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
2519 self.start_transaction(cx);
2520
2521 let selections = self.local_selections::<Point>(cx);
2522 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2523 let buffer = &display_map.buffer_snapshot;
2524
2525 let mut edits = Vec::new();
2526 let mut selections_iter = selections.iter().peekable();
2527 while let Some(selection) = selections_iter.next() {
2528 // Avoid duplicating the same lines twice.
2529 let mut rows = selection.spanned_rows(false, &display_map);
2530
2531 while let Some(next_selection) = selections_iter.peek() {
2532 let next_rows = next_selection.spanned_rows(false, &display_map);
2533 if next_rows.start <= rows.end - 1 {
2534 rows.end = next_rows.end;
2535 selections_iter.next().unwrap();
2536 } else {
2537 break;
2538 }
2539 }
2540
2541 // Copy the text from the selected row region and splice it at the start of the region.
2542 let start = Point::new(rows.start, 0);
2543 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
2544 let text = buffer
2545 .text_for_range(start..end)
2546 .chain(Some("\n"))
2547 .collect::<String>();
2548 edits.push((start, text, rows.len() as u32));
2549 }
2550
2551 self.buffer.update(cx, |buffer, cx| {
2552 for (point, text, _) in edits.into_iter().rev() {
2553 buffer.edit(Some(point..point), text, cx);
2554 }
2555 });
2556
2557 self.request_autoscroll(Autoscroll::Fit, cx);
2558 self.end_transaction(cx);
2559 }
2560
2561 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
2562 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2563 let buffer = self.buffer.read(cx).snapshot(cx);
2564
2565 let mut edits = Vec::new();
2566 let mut unfold_ranges = Vec::new();
2567 let mut refold_ranges = Vec::new();
2568
2569 let selections = self.local_selections::<Point>(cx);
2570 let mut selections = selections.iter().peekable();
2571 let mut contiguous_row_selections = Vec::new();
2572 let mut new_selections = Vec::new();
2573
2574 while let Some(selection) = selections.next() {
2575 // Find all the selections that span a contiguous row range
2576 contiguous_row_selections.push(selection.clone());
2577 let start_row = selection.start.row;
2578 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
2579 display_map.next_line_boundary(selection.end).0.row + 1
2580 } else {
2581 selection.end.row
2582 };
2583
2584 while let Some(next_selection) = selections.peek() {
2585 if next_selection.start.row <= end_row {
2586 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
2587 display_map.next_line_boundary(next_selection.end).0.row + 1
2588 } else {
2589 next_selection.end.row
2590 };
2591 contiguous_row_selections.push(selections.next().unwrap().clone());
2592 } else {
2593 break;
2594 }
2595 }
2596
2597 // Move the text spanned by the row range to be before the line preceding the row range
2598 if start_row > 0 {
2599 let range_to_move = Point::new(start_row - 1, buffer.line_len(start_row - 1))
2600 ..Point::new(end_row - 1, buffer.line_len(end_row - 1));
2601 let insertion_point = display_map
2602 .prev_line_boundary(Point::new(start_row - 1, 0))
2603 .0;
2604
2605 // Don't move lines across excerpts
2606 if !buffer.range_contains_excerpt_boundary(insertion_point..range_to_move.end) {
2607 let text = buffer
2608 .text_for_range(range_to_move.clone())
2609 .flat_map(|s| s.chars())
2610 .skip(1)
2611 .chain(['\n'])
2612 .collect::<String>();
2613
2614 edits.push((
2615 buffer.anchor_after(range_to_move.start)
2616 ..buffer.anchor_before(range_to_move.end),
2617 String::new(),
2618 ));
2619 let insertion_anchor = buffer.anchor_after(insertion_point);
2620 edits.push((insertion_anchor.clone()..insertion_anchor, text));
2621
2622 let row_delta = range_to_move.start.row - insertion_point.row + 1;
2623
2624 // Move selections up
2625 new_selections.extend(contiguous_row_selections.drain(..).map(
2626 |mut selection| {
2627 selection.start.row -= row_delta;
2628 selection.end.row -= row_delta;
2629 selection
2630 },
2631 ));
2632
2633 // Move folds up
2634 unfold_ranges.push(range_to_move.clone());
2635 for fold in display_map.folds_in_range(
2636 buffer.anchor_before(range_to_move.start)
2637 ..buffer.anchor_after(range_to_move.end),
2638 ) {
2639 let mut start = fold.start.to_point(&buffer);
2640 let mut end = fold.end.to_point(&buffer);
2641 start.row -= row_delta;
2642 end.row -= row_delta;
2643 refold_ranges.push(start..end);
2644 }
2645 }
2646 }
2647
2648 // If we didn't move line(s), preserve the existing selections
2649 new_selections.extend(contiguous_row_selections.drain(..));
2650 }
2651
2652 self.start_transaction(cx);
2653 self.unfold_ranges(unfold_ranges, cx);
2654 self.buffer.update(cx, |buffer, cx| {
2655 for (range, text) in edits {
2656 buffer.edit([range], text, cx);
2657 }
2658 });
2659 self.fold_ranges(refold_ranges, cx);
2660 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2661 self.end_transaction(cx);
2662 }
2663
2664 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
2665 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2666 let buffer = self.buffer.read(cx).snapshot(cx);
2667
2668 let mut edits = Vec::new();
2669 let mut unfold_ranges = Vec::new();
2670 let mut refold_ranges = Vec::new();
2671
2672 let selections = self.local_selections::<Point>(cx);
2673 let mut selections = selections.iter().peekable();
2674 let mut contiguous_row_selections = Vec::new();
2675 let mut new_selections = Vec::new();
2676
2677 while let Some(selection) = selections.next() {
2678 // Find all the selections that span a contiguous row range
2679 contiguous_row_selections.push(selection.clone());
2680 let start_row = selection.start.row;
2681 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
2682 display_map.next_line_boundary(selection.end).0.row + 1
2683 } else {
2684 selection.end.row
2685 };
2686
2687 while let Some(next_selection) = selections.peek() {
2688 if next_selection.start.row <= end_row {
2689 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
2690 display_map.next_line_boundary(next_selection.end).0.row + 1
2691 } else {
2692 next_selection.end.row
2693 };
2694 contiguous_row_selections.push(selections.next().unwrap().clone());
2695 } else {
2696 break;
2697 }
2698 }
2699
2700 // Move the text spanned by the row range to be after the last line of the row range
2701 if end_row <= buffer.max_point().row {
2702 let range_to_move = Point::new(start_row, 0)..Point::new(end_row, 0);
2703 let insertion_point = display_map.next_line_boundary(Point::new(end_row, 0)).0;
2704
2705 // Don't move lines across excerpt boundaries
2706 if !buffer.range_contains_excerpt_boundary(range_to_move.start..insertion_point) {
2707 let mut text = String::from("\n");
2708 text.extend(buffer.text_for_range(range_to_move.clone()));
2709 text.pop(); // Drop trailing newline
2710 edits.push((
2711 buffer.anchor_after(range_to_move.start)
2712 ..buffer.anchor_before(range_to_move.end),
2713 String::new(),
2714 ));
2715 let insertion_anchor = buffer.anchor_after(insertion_point);
2716 edits.push((insertion_anchor.clone()..insertion_anchor, text));
2717
2718 let row_delta = insertion_point.row - range_to_move.end.row + 1;
2719
2720 // Move selections down
2721 new_selections.extend(contiguous_row_selections.drain(..).map(
2722 |mut selection| {
2723 selection.start.row += row_delta;
2724 selection.end.row += row_delta;
2725 selection
2726 },
2727 ));
2728
2729 // Move folds down
2730 unfold_ranges.push(range_to_move.clone());
2731 for fold in display_map.folds_in_range(
2732 buffer.anchor_before(range_to_move.start)
2733 ..buffer.anchor_after(range_to_move.end),
2734 ) {
2735 let mut start = fold.start.to_point(&buffer);
2736 let mut end = fold.end.to_point(&buffer);
2737 start.row += row_delta;
2738 end.row += row_delta;
2739 refold_ranges.push(start..end);
2740 }
2741 }
2742 }
2743
2744 // If we didn't move line(s), preserve the existing selections
2745 new_selections.extend(contiguous_row_selections.drain(..));
2746 }
2747
2748 self.start_transaction(cx);
2749 self.unfold_ranges(unfold_ranges, cx);
2750 self.buffer.update(cx, |buffer, cx| {
2751 for (range, text) in edits {
2752 buffer.edit([range], text, cx);
2753 }
2754 });
2755 self.fold_ranges(refold_ranges, cx);
2756 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2757 self.end_transaction(cx);
2758 }
2759
2760 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
2761 self.start_transaction(cx);
2762 let mut text = String::new();
2763 let mut selections = self.local_selections::<Point>(cx);
2764 let mut clipboard_selections = Vec::with_capacity(selections.len());
2765 {
2766 let buffer = self.buffer.read(cx).read(cx);
2767 let max_point = buffer.max_point();
2768 for selection in &mut selections {
2769 let is_entire_line = selection.is_empty();
2770 if is_entire_line {
2771 selection.start = Point::new(selection.start.row, 0);
2772 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
2773 selection.goal = SelectionGoal::None;
2774 }
2775 let mut len = 0;
2776 for chunk in buffer.text_for_range(selection.start..selection.end) {
2777 text.push_str(chunk);
2778 len += chunk.len();
2779 }
2780 clipboard_selections.push(ClipboardSelection {
2781 len,
2782 is_entire_line,
2783 });
2784 }
2785 }
2786 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2787 self.insert("", cx);
2788 self.end_transaction(cx);
2789
2790 cx.as_mut()
2791 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
2792 }
2793
2794 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
2795 let selections = self.local_selections::<Point>(cx);
2796 let mut text = String::new();
2797 let mut clipboard_selections = Vec::with_capacity(selections.len());
2798 {
2799 let buffer = self.buffer.read(cx).read(cx);
2800 let max_point = buffer.max_point();
2801 for selection in selections.iter() {
2802 let mut start = selection.start;
2803 let mut end = selection.end;
2804 let is_entire_line = selection.is_empty();
2805 if is_entire_line {
2806 start = Point::new(start.row, 0);
2807 end = cmp::min(max_point, Point::new(start.row + 1, 0));
2808 }
2809 let mut len = 0;
2810 for chunk in buffer.text_for_range(start..end) {
2811 text.push_str(chunk);
2812 len += chunk.len();
2813 }
2814 clipboard_selections.push(ClipboardSelection {
2815 len,
2816 is_entire_line,
2817 });
2818 }
2819 }
2820
2821 cx.as_mut()
2822 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
2823 }
2824
2825 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
2826 if let Some(item) = cx.as_mut().read_from_clipboard() {
2827 let clipboard_text = item.text();
2828 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
2829 let mut selections = self.local_selections::<usize>(cx);
2830 let all_selections_were_entire_line =
2831 clipboard_selections.iter().all(|s| s.is_entire_line);
2832 if clipboard_selections.len() != selections.len() {
2833 clipboard_selections.clear();
2834 }
2835
2836 let mut delta = 0_isize;
2837 let mut start_offset = 0;
2838 for (i, selection) in selections.iter_mut().enumerate() {
2839 let to_insert;
2840 let entire_line;
2841 if let Some(clipboard_selection) = clipboard_selections.get(i) {
2842 let end_offset = start_offset + clipboard_selection.len;
2843 to_insert = &clipboard_text[start_offset..end_offset];
2844 entire_line = clipboard_selection.is_entire_line;
2845 start_offset = end_offset
2846 } else {
2847 to_insert = clipboard_text.as_str();
2848 entire_line = all_selections_were_entire_line;
2849 }
2850
2851 selection.start = (selection.start as isize + delta) as usize;
2852 selection.end = (selection.end as isize + delta) as usize;
2853
2854 self.buffer.update(cx, |buffer, cx| {
2855 // If the corresponding selection was empty when this slice of the
2856 // clipboard text was written, then the entire line containing the
2857 // selection was copied. If this selection is also currently empty,
2858 // then paste the line before the current line of the buffer.
2859 let range = if selection.is_empty() && entire_line {
2860 let column = selection.start.to_point(&buffer.read(cx)).column as usize;
2861 let line_start = selection.start - column;
2862 line_start..line_start
2863 } else {
2864 selection.start..selection.end
2865 };
2866
2867 delta += to_insert.len() as isize - range.len() as isize;
2868 buffer.edit([range], to_insert, cx);
2869 selection.start += to_insert.len();
2870 selection.end = selection.start;
2871 });
2872 }
2873 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2874 } else {
2875 self.insert(clipboard_text, cx);
2876 }
2877 }
2878 }
2879
2880 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
2881 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
2882 if let Some((selections, _)) = self.selection_history.get(&tx_id).cloned() {
2883 self.set_selections(selections, cx);
2884 }
2885 self.request_autoscroll(Autoscroll::Fit, cx);
2886 }
2887 }
2888
2889 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
2890 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
2891 if let Some((_, Some(selections))) = self.selection_history.get(&tx_id).cloned() {
2892 self.set_selections(selections, cx);
2893 }
2894 self.request_autoscroll(Autoscroll::Fit, cx);
2895 }
2896 }
2897
2898 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
2899 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2900 let mut selections = self.local_selections::<Point>(cx);
2901 for selection in &mut selections {
2902 let start = selection.start.to_display_point(&display_map);
2903 let end = selection.end.to_display_point(&display_map);
2904
2905 if start != end {
2906 selection.end = selection.start.clone();
2907 } else {
2908 let cursor = movement::left(&display_map, start)
2909 .unwrap()
2910 .to_point(&display_map);
2911 selection.start = cursor.clone();
2912 selection.end = cursor;
2913 }
2914 selection.reversed = false;
2915 selection.goal = SelectionGoal::None;
2916 }
2917 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2918 }
2919
2920 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
2921 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2922 let mut selections = self.local_selections::<Point>(cx);
2923 for selection in &mut selections {
2924 let head = selection.head().to_display_point(&display_map);
2925 let cursor = movement::left(&display_map, head)
2926 .unwrap()
2927 .to_point(&display_map);
2928 selection.set_head(cursor);
2929 selection.goal = SelectionGoal::None;
2930 }
2931 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2932 }
2933
2934 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
2935 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2936 let mut selections = self.local_selections::<Point>(cx);
2937 for selection in &mut selections {
2938 let start = selection.start.to_display_point(&display_map);
2939 let end = selection.end.to_display_point(&display_map);
2940
2941 if start != end {
2942 selection.start = selection.end.clone();
2943 } else {
2944 let cursor = movement::right(&display_map, end)
2945 .unwrap()
2946 .to_point(&display_map);
2947 selection.start = cursor;
2948 selection.end = cursor;
2949 }
2950 selection.reversed = false;
2951 selection.goal = SelectionGoal::None;
2952 }
2953 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2954 }
2955
2956 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
2957 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2958 let mut selections = self.local_selections::<Point>(cx);
2959 for selection in &mut selections {
2960 let head = selection.head().to_display_point(&display_map);
2961 let cursor = movement::right(&display_map, head)
2962 .unwrap()
2963 .to_point(&display_map);
2964 selection.set_head(cursor);
2965 selection.goal = SelectionGoal::None;
2966 }
2967 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2968 }
2969
2970 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
2971 if let Some(context_menu) = self.context_menu.as_mut() {
2972 if context_menu.select_prev(cx) {
2973 return;
2974 }
2975 }
2976
2977 if matches!(self.mode, EditorMode::SingleLine) {
2978 cx.propagate_action();
2979 return;
2980 }
2981
2982 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2983 let mut selections = self.local_selections::<Point>(cx);
2984 for selection in &mut selections {
2985 let start = selection.start.to_display_point(&display_map);
2986 let end = selection.end.to_display_point(&display_map);
2987 if start != end {
2988 selection.goal = SelectionGoal::None;
2989 }
2990
2991 let (start, goal) = movement::up(&display_map, start, selection.goal).unwrap();
2992 let cursor = start.to_point(&display_map);
2993 selection.start = cursor;
2994 selection.end = cursor;
2995 selection.goal = goal;
2996 selection.reversed = false;
2997 }
2998 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2999 }
3000
3001 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
3002 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3003 let mut selections = self.local_selections::<Point>(cx);
3004 for selection in &mut selections {
3005 let head = selection.head().to_display_point(&display_map);
3006 let (head, goal) = movement::up(&display_map, head, selection.goal).unwrap();
3007 let cursor = head.to_point(&display_map);
3008 selection.set_head(cursor);
3009 selection.goal = goal;
3010 }
3011 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3012 }
3013
3014 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
3015 if let Some(context_menu) = self.context_menu.as_mut() {
3016 if context_menu.select_next(cx) {
3017 return;
3018 }
3019 }
3020
3021 if matches!(self.mode, EditorMode::SingleLine) {
3022 cx.propagate_action();
3023 return;
3024 }
3025
3026 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3027 let mut selections = self.local_selections::<Point>(cx);
3028 for selection in &mut selections {
3029 let start = selection.start.to_display_point(&display_map);
3030 let end = selection.end.to_display_point(&display_map);
3031 if start != end {
3032 selection.goal = SelectionGoal::None;
3033 }
3034
3035 let (start, goal) = movement::down(&display_map, end, selection.goal).unwrap();
3036 let cursor = start.to_point(&display_map);
3037 selection.start = cursor;
3038 selection.end = cursor;
3039 selection.goal = goal;
3040 selection.reversed = false;
3041 }
3042 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3043 }
3044
3045 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
3046 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3047 let mut selections = self.local_selections::<Point>(cx);
3048 for selection in &mut selections {
3049 let head = selection.head().to_display_point(&display_map);
3050 let (head, goal) = movement::down(&display_map, head, selection.goal).unwrap();
3051 let cursor = head.to_point(&display_map);
3052 selection.set_head(cursor);
3053 selection.goal = goal;
3054 }
3055 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3056 }
3057
3058 pub fn move_to_previous_word_boundary(
3059 &mut self,
3060 _: &MoveToPreviousWordBoundary,
3061 cx: &mut ViewContext<Self>,
3062 ) {
3063 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3064 let mut selections = self.local_selections::<Point>(cx);
3065 for selection in &mut selections {
3066 let head = selection.head().to_display_point(&display_map);
3067 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3068 selection.start = cursor.clone();
3069 selection.end = cursor;
3070 selection.reversed = false;
3071 selection.goal = SelectionGoal::None;
3072 }
3073 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3074 }
3075
3076 pub fn select_to_previous_word_boundary(
3077 &mut self,
3078 _: &SelectToPreviousWordBoundary,
3079 cx: &mut ViewContext<Self>,
3080 ) {
3081 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3082 let mut selections = self.local_selections::<Point>(cx);
3083 for selection in &mut selections {
3084 let head = selection.head().to_display_point(&display_map);
3085 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3086 selection.set_head(cursor);
3087 selection.goal = SelectionGoal::None;
3088 }
3089 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3090 }
3091
3092 pub fn delete_to_previous_word_boundary(
3093 &mut self,
3094 _: &DeleteToPreviousWordBoundary,
3095 cx: &mut ViewContext<Self>,
3096 ) {
3097 self.start_transaction(cx);
3098 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3099 let mut selections = self.local_selections::<Point>(cx);
3100 for selection in &mut selections {
3101 if selection.is_empty() {
3102 let head = selection.head().to_display_point(&display_map);
3103 let cursor =
3104 movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3105 selection.set_head(cursor);
3106 selection.goal = SelectionGoal::None;
3107 }
3108 }
3109 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3110 self.insert("", cx);
3111 self.end_transaction(cx);
3112 }
3113
3114 pub fn move_to_next_word_boundary(
3115 &mut self,
3116 _: &MoveToNextWordBoundary,
3117 cx: &mut ViewContext<Self>,
3118 ) {
3119 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3120 let mut selections = self.local_selections::<Point>(cx);
3121 for selection in &mut selections {
3122 let head = selection.head().to_display_point(&display_map);
3123 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
3124 selection.start = cursor;
3125 selection.end = cursor;
3126 selection.reversed = false;
3127 selection.goal = SelectionGoal::None;
3128 }
3129 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3130 }
3131
3132 pub fn select_to_next_word_boundary(
3133 &mut self,
3134 _: &SelectToNextWordBoundary,
3135 cx: &mut ViewContext<Self>,
3136 ) {
3137 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3138 let mut selections = self.local_selections::<Point>(cx);
3139 for selection in &mut selections {
3140 let head = selection.head().to_display_point(&display_map);
3141 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
3142 selection.set_head(cursor);
3143 selection.goal = SelectionGoal::None;
3144 }
3145 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3146 }
3147
3148 pub fn delete_to_next_word_boundary(
3149 &mut self,
3150 _: &DeleteToNextWordBoundary,
3151 cx: &mut ViewContext<Self>,
3152 ) {
3153 self.start_transaction(cx);
3154 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3155 let mut selections = self.local_selections::<Point>(cx);
3156 for selection in &mut selections {
3157 if selection.is_empty() {
3158 let head = selection.head().to_display_point(&display_map);
3159 let cursor =
3160 movement::next_word_boundary(&display_map, head).to_point(&display_map);
3161 selection.set_head(cursor);
3162 selection.goal = SelectionGoal::None;
3163 }
3164 }
3165 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3166 self.insert("", cx);
3167 self.end_transaction(cx);
3168 }
3169
3170 pub fn move_to_beginning_of_line(
3171 &mut self,
3172 _: &MoveToBeginningOfLine,
3173 cx: &mut ViewContext<Self>,
3174 ) {
3175 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3176 let mut selections = self.local_selections::<Point>(cx);
3177 for selection in &mut selections {
3178 let head = selection.head().to_display_point(&display_map);
3179 let new_head = movement::line_beginning(&display_map, head, true);
3180 let cursor = new_head.to_point(&display_map);
3181 selection.start = cursor;
3182 selection.end = cursor;
3183 selection.reversed = false;
3184 selection.goal = SelectionGoal::None;
3185 }
3186 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3187 }
3188
3189 pub fn select_to_beginning_of_line(
3190 &mut self,
3191 SelectToBeginningOfLine(stop_at_soft_boundaries): &SelectToBeginningOfLine,
3192 cx: &mut ViewContext<Self>,
3193 ) {
3194 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3195 let mut selections = self.local_selections::<Point>(cx);
3196 for selection in &mut selections {
3197 let head = selection.head().to_display_point(&display_map);
3198 let new_head = movement::line_beginning(&display_map, head, *stop_at_soft_boundaries);
3199 selection.set_head(new_head.to_point(&display_map));
3200 selection.goal = SelectionGoal::None;
3201 }
3202 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3203 }
3204
3205 pub fn delete_to_beginning_of_line(
3206 &mut self,
3207 _: &DeleteToBeginningOfLine,
3208 cx: &mut ViewContext<Self>,
3209 ) {
3210 self.start_transaction(cx);
3211 self.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
3212 self.backspace(&Backspace, cx);
3213 self.end_transaction(cx);
3214 }
3215
3216 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
3217 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3218 let mut selections = self.local_selections::<Point>(cx);
3219 {
3220 for selection in &mut selections {
3221 let head = selection.head().to_display_point(&display_map);
3222 let new_head = movement::line_end(&display_map, head, true);
3223 let anchor = new_head.to_point(&display_map);
3224 selection.start = anchor.clone();
3225 selection.end = anchor;
3226 selection.reversed = false;
3227 selection.goal = SelectionGoal::None;
3228 }
3229 }
3230 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3231 }
3232
3233 pub fn select_to_end_of_line(
3234 &mut self,
3235 SelectToEndOfLine(stop_at_soft_boundaries): &SelectToEndOfLine,
3236 cx: &mut ViewContext<Self>,
3237 ) {
3238 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3239 let mut selections = self.local_selections::<Point>(cx);
3240 for selection in &mut selections {
3241 let head = selection.head().to_display_point(&display_map);
3242 let new_head = movement::line_end(&display_map, head, *stop_at_soft_boundaries);
3243 selection.set_head(new_head.to_point(&display_map));
3244 selection.goal = SelectionGoal::None;
3245 }
3246 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3247 }
3248
3249 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
3250 self.start_transaction(cx);
3251 self.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3252 self.delete(&Delete, cx);
3253 self.end_transaction(cx);
3254 }
3255
3256 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
3257 self.start_transaction(cx);
3258 self.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3259 self.cut(&Cut, cx);
3260 self.end_transaction(cx);
3261 }
3262
3263 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
3264 if matches!(self.mode, EditorMode::SingleLine) {
3265 cx.propagate_action();
3266 return;
3267 }
3268
3269 let selection = Selection {
3270 id: post_inc(&mut self.next_selection_id),
3271 start: 0,
3272 end: 0,
3273 reversed: false,
3274 goal: SelectionGoal::None,
3275 };
3276 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3277 }
3278
3279 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
3280 let mut selection = self.local_selections::<Point>(cx).last().unwrap().clone();
3281 selection.set_head(Point::zero());
3282 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3283 }
3284
3285 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
3286 if matches!(self.mode, EditorMode::SingleLine) {
3287 cx.propagate_action();
3288 return;
3289 }
3290
3291 let cursor = self.buffer.read(cx).read(cx).len();
3292 let selection = Selection {
3293 id: post_inc(&mut self.next_selection_id),
3294 start: cursor,
3295 end: cursor,
3296 reversed: false,
3297 goal: SelectionGoal::None,
3298 };
3299 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3300 }
3301
3302 pub fn set_nav_history(&mut self, nav_history: Option<ItemNavHistory>) {
3303 self.nav_history = nav_history;
3304 }
3305
3306 pub fn nav_history(&self) -> Option<&ItemNavHistory> {
3307 self.nav_history.as_ref()
3308 }
3309
3310 fn push_to_nav_history(
3311 &self,
3312 position: Anchor,
3313 new_position: Option<Point>,
3314 cx: &mut ViewContext<Self>,
3315 ) {
3316 if let Some(nav_history) = &self.nav_history {
3317 let buffer = self.buffer.read(cx).read(cx);
3318 let offset = position.to_offset(&buffer);
3319 let point = position.to_point(&buffer);
3320 drop(buffer);
3321
3322 if let Some(new_position) = new_position {
3323 let row_delta = (new_position.row as i64 - point.row as i64).abs();
3324 if row_delta < MIN_NAVIGATION_HISTORY_ROW_DELTA {
3325 return;
3326 }
3327 }
3328
3329 nav_history.push(Some(NavigationData {
3330 anchor: position,
3331 offset,
3332 }));
3333 }
3334 }
3335
3336 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
3337 let mut selection = self.local_selections::<usize>(cx).first().unwrap().clone();
3338 selection.set_head(self.buffer.read(cx).read(cx).len());
3339 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3340 }
3341
3342 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
3343 let selection = Selection {
3344 id: post_inc(&mut self.next_selection_id),
3345 start: 0,
3346 end: self.buffer.read(cx).read(cx).len(),
3347 reversed: false,
3348 goal: SelectionGoal::None,
3349 };
3350 self.update_selections(vec![selection], None, cx);
3351 }
3352
3353 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
3354 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3355 let mut selections = self.local_selections::<Point>(cx);
3356 let max_point = display_map.buffer_snapshot.max_point();
3357 for selection in &mut selections {
3358 let rows = selection.spanned_rows(true, &display_map);
3359 selection.start = Point::new(rows.start, 0);
3360 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
3361 selection.reversed = false;
3362 }
3363 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3364 }
3365
3366 pub fn split_selection_into_lines(
3367 &mut self,
3368 _: &SplitSelectionIntoLines,
3369 cx: &mut ViewContext<Self>,
3370 ) {
3371 let mut to_unfold = Vec::new();
3372 let mut new_selections = Vec::new();
3373 {
3374 let selections = self.local_selections::<Point>(cx);
3375 let buffer = self.buffer.read(cx).read(cx);
3376 for selection in selections {
3377 for row in selection.start.row..selection.end.row {
3378 let cursor = Point::new(row, buffer.line_len(row));
3379 new_selections.push(Selection {
3380 id: post_inc(&mut self.next_selection_id),
3381 start: cursor,
3382 end: cursor,
3383 reversed: false,
3384 goal: SelectionGoal::None,
3385 });
3386 }
3387 new_selections.push(Selection {
3388 id: selection.id,
3389 start: selection.end,
3390 end: selection.end,
3391 reversed: false,
3392 goal: SelectionGoal::None,
3393 });
3394 to_unfold.push(selection.start..selection.end);
3395 }
3396 }
3397 self.unfold_ranges(to_unfold, cx);
3398 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3399 }
3400
3401 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
3402 self.add_selection(true, cx);
3403 }
3404
3405 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
3406 self.add_selection(false, cx);
3407 }
3408
3409 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
3410 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3411 let mut selections = self.local_selections::<Point>(cx);
3412 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
3413 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
3414 let range = oldest_selection.display_range(&display_map).sorted();
3415 let columns = cmp::min(range.start.column(), range.end.column())
3416 ..cmp::max(range.start.column(), range.end.column());
3417
3418 selections.clear();
3419 let mut stack = Vec::new();
3420 for row in range.start.row()..=range.end.row() {
3421 if let Some(selection) = self.build_columnar_selection(
3422 &display_map,
3423 row,
3424 &columns,
3425 oldest_selection.reversed,
3426 ) {
3427 stack.push(selection.id);
3428 selections.push(selection);
3429 }
3430 }
3431
3432 if above {
3433 stack.reverse();
3434 }
3435
3436 AddSelectionsState { above, stack }
3437 });
3438
3439 let last_added_selection = *state.stack.last().unwrap();
3440 let mut new_selections = Vec::new();
3441 if above == state.above {
3442 let end_row = if above {
3443 0
3444 } else {
3445 display_map.max_point().row()
3446 };
3447
3448 'outer: for selection in selections {
3449 if selection.id == last_added_selection {
3450 let range = selection.display_range(&display_map).sorted();
3451 debug_assert_eq!(range.start.row(), range.end.row());
3452 let mut row = range.start.row();
3453 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
3454 {
3455 start..end
3456 } else {
3457 cmp::min(range.start.column(), range.end.column())
3458 ..cmp::max(range.start.column(), range.end.column())
3459 };
3460
3461 while row != end_row {
3462 if above {
3463 row -= 1;
3464 } else {
3465 row += 1;
3466 }
3467
3468 if let Some(new_selection) = self.build_columnar_selection(
3469 &display_map,
3470 row,
3471 &columns,
3472 selection.reversed,
3473 ) {
3474 state.stack.push(new_selection.id);
3475 if above {
3476 new_selections.push(new_selection);
3477 new_selections.push(selection);
3478 } else {
3479 new_selections.push(selection);
3480 new_selections.push(new_selection);
3481 }
3482
3483 continue 'outer;
3484 }
3485 }
3486 }
3487
3488 new_selections.push(selection);
3489 }
3490 } else {
3491 new_selections = selections;
3492 new_selections.retain(|s| s.id != last_added_selection);
3493 state.stack.pop();
3494 }
3495
3496 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3497 if state.stack.len() > 1 {
3498 self.add_selections_state = Some(state);
3499 }
3500 }
3501
3502 pub fn select_next(&mut self, action: &SelectNext, cx: &mut ViewContext<Self>) {
3503 let replace_newest = action.0;
3504 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3505 let buffer = &display_map.buffer_snapshot;
3506 let mut selections = self.local_selections::<usize>(cx);
3507 if let Some(mut select_next_state) = self.select_next_state.take() {
3508 let query = &select_next_state.query;
3509 if !select_next_state.done {
3510 let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
3511 let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
3512 let mut next_selected_range = None;
3513
3514 let bytes_after_last_selection =
3515 buffer.bytes_in_range(last_selection.end..buffer.len());
3516 let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
3517 let query_matches = query
3518 .stream_find_iter(bytes_after_last_selection)
3519 .map(|result| (last_selection.end, result))
3520 .chain(
3521 query
3522 .stream_find_iter(bytes_before_first_selection)
3523 .map(|result| (0, result)),
3524 );
3525 for (start_offset, query_match) in query_matches {
3526 let query_match = query_match.unwrap(); // can only fail due to I/O
3527 let offset_range =
3528 start_offset + query_match.start()..start_offset + query_match.end();
3529 let display_range = offset_range.start.to_display_point(&display_map)
3530 ..offset_range.end.to_display_point(&display_map);
3531
3532 if !select_next_state.wordwise
3533 || (!movement::is_inside_word(&display_map, display_range.start)
3534 && !movement::is_inside_word(&display_map, display_range.end))
3535 {
3536 next_selected_range = Some(offset_range);
3537 break;
3538 }
3539 }
3540
3541 if let Some(next_selected_range) = next_selected_range {
3542 if replace_newest {
3543 if let Some(newest_id) =
3544 selections.iter().max_by_key(|s| s.id).map(|s| s.id)
3545 {
3546 selections.retain(|s| s.id != newest_id);
3547 }
3548 }
3549 selections.push(Selection {
3550 id: post_inc(&mut self.next_selection_id),
3551 start: next_selected_range.start,
3552 end: next_selected_range.end,
3553 reversed: false,
3554 goal: SelectionGoal::None,
3555 });
3556 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3557 } else {
3558 select_next_state.done = true;
3559 }
3560 }
3561
3562 self.select_next_state = Some(select_next_state);
3563 } else if selections.len() == 1 {
3564 let selection = selections.last_mut().unwrap();
3565 if selection.start == selection.end {
3566 let word_range = movement::surrounding_word(
3567 &display_map,
3568 selection.start.to_display_point(&display_map),
3569 );
3570 selection.start = word_range.start.to_offset(&display_map, Bias::Left);
3571 selection.end = word_range.end.to_offset(&display_map, Bias::Left);
3572 selection.goal = SelectionGoal::None;
3573 selection.reversed = false;
3574
3575 let query = buffer
3576 .text_for_range(selection.start..selection.end)
3577 .collect::<String>();
3578 let select_state = SelectNextState {
3579 query: AhoCorasick::new_auto_configured(&[query]),
3580 wordwise: true,
3581 done: false,
3582 };
3583 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3584 self.select_next_state = Some(select_state);
3585 } else {
3586 let query = buffer
3587 .text_for_range(selection.start..selection.end)
3588 .collect::<String>();
3589 self.select_next_state = Some(SelectNextState {
3590 query: AhoCorasick::new_auto_configured(&[query]),
3591 wordwise: false,
3592 done: false,
3593 });
3594 self.select_next(action, cx);
3595 }
3596 }
3597 }
3598
3599 pub fn toggle_comments(&mut self, _: &ToggleComments, cx: &mut ViewContext<Self>) {
3600 // Get the line comment prefix. Split its trailing whitespace into a separate string,
3601 // as that portion won't be used for detecting if a line is a comment.
3602 let full_comment_prefix =
3603 if let Some(prefix) = self.language(cx).and_then(|l| l.line_comment_prefix()) {
3604 prefix.to_string()
3605 } else {
3606 return;
3607 };
3608 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
3609 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
3610
3611 self.start_transaction(cx);
3612 let mut selections = self.local_selections::<Point>(cx);
3613 let mut all_selection_lines_are_comments = true;
3614 let mut edit_ranges = Vec::new();
3615 let mut last_toggled_row = None;
3616 self.buffer.update(cx, |buffer, cx| {
3617 for selection in &mut selections {
3618 edit_ranges.clear();
3619 let snapshot = buffer.snapshot(cx);
3620
3621 let end_row =
3622 if selection.end.row > selection.start.row && selection.end.column == 0 {
3623 selection.end.row
3624 } else {
3625 selection.end.row + 1
3626 };
3627
3628 for row in selection.start.row..end_row {
3629 // If multiple selections contain a given row, avoid processing that
3630 // row more than once.
3631 if last_toggled_row == Some(row) {
3632 continue;
3633 } else {
3634 last_toggled_row = Some(row);
3635 }
3636
3637 if snapshot.is_line_blank(row) {
3638 continue;
3639 }
3640
3641 let start = Point::new(row, snapshot.indent_column_for_line(row));
3642 let mut line_bytes = snapshot
3643 .bytes_in_range(start..snapshot.max_point())
3644 .flatten()
3645 .copied();
3646
3647 // If this line currently begins with the line comment prefix, then record
3648 // the range containing the prefix.
3649 if all_selection_lines_are_comments
3650 && line_bytes
3651 .by_ref()
3652 .take(comment_prefix.len())
3653 .eq(comment_prefix.bytes())
3654 {
3655 // Include any whitespace that matches the comment prefix.
3656 let matching_whitespace_len = line_bytes
3657 .zip(comment_prefix_whitespace.bytes())
3658 .take_while(|(a, b)| a == b)
3659 .count() as u32;
3660 let end = Point::new(
3661 row,
3662 start.column + comment_prefix.len() as u32 + matching_whitespace_len,
3663 );
3664 edit_ranges.push(start..end);
3665 }
3666 // If this line does not begin with the line comment prefix, then record
3667 // the position where the prefix should be inserted.
3668 else {
3669 all_selection_lines_are_comments = false;
3670 edit_ranges.push(start..start);
3671 }
3672 }
3673
3674 if !edit_ranges.is_empty() {
3675 if all_selection_lines_are_comments {
3676 buffer.edit(edit_ranges.iter().cloned(), "", cx);
3677 } else {
3678 let min_column = edit_ranges.iter().map(|r| r.start.column).min().unwrap();
3679 let edit_ranges = edit_ranges.iter().map(|range| {
3680 let position = Point::new(range.start.row, min_column);
3681 position..position
3682 });
3683 buffer.edit(edit_ranges, &full_comment_prefix, cx);
3684 }
3685 }
3686 }
3687 });
3688
3689 self.update_selections(
3690 self.local_selections::<usize>(cx),
3691 Some(Autoscroll::Fit),
3692 cx,
3693 );
3694 self.end_transaction(cx);
3695 }
3696
3697 pub fn select_larger_syntax_node(
3698 &mut self,
3699 _: &SelectLargerSyntaxNode,
3700 cx: &mut ViewContext<Self>,
3701 ) {
3702 let old_selections = self.local_selections::<usize>(cx).into_boxed_slice();
3703 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3704 let buffer = self.buffer.read(cx).snapshot(cx);
3705
3706 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
3707 let mut selected_larger_node = false;
3708 let new_selections = old_selections
3709 .iter()
3710 .map(|selection| {
3711 let old_range = selection.start..selection.end;
3712 let mut new_range = old_range.clone();
3713 while let Some(containing_range) =
3714 buffer.range_for_syntax_ancestor(new_range.clone())
3715 {
3716 new_range = containing_range;
3717 if !display_map.intersects_fold(new_range.start)
3718 && !display_map.intersects_fold(new_range.end)
3719 {
3720 break;
3721 }
3722 }
3723
3724 selected_larger_node |= new_range != old_range;
3725 Selection {
3726 id: selection.id,
3727 start: new_range.start,
3728 end: new_range.end,
3729 goal: SelectionGoal::None,
3730 reversed: selection.reversed,
3731 }
3732 })
3733 .collect::<Vec<_>>();
3734
3735 if selected_larger_node {
3736 stack.push(old_selections);
3737 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3738 }
3739 self.select_larger_syntax_node_stack = stack;
3740 }
3741
3742 pub fn select_smaller_syntax_node(
3743 &mut self,
3744 _: &SelectSmallerSyntaxNode,
3745 cx: &mut ViewContext<Self>,
3746 ) {
3747 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
3748 if let Some(selections) = stack.pop() {
3749 self.update_selections(selections.to_vec(), Some(Autoscroll::Fit), cx);
3750 }
3751 self.select_larger_syntax_node_stack = stack;
3752 }
3753
3754 pub fn move_to_enclosing_bracket(
3755 &mut self,
3756 _: &MoveToEnclosingBracket,
3757 cx: &mut ViewContext<Self>,
3758 ) {
3759 let mut selections = self.local_selections::<usize>(cx);
3760 let buffer = self.buffer.read(cx).snapshot(cx);
3761 for selection in &mut selections {
3762 if let Some((open_range, close_range)) =
3763 buffer.enclosing_bracket_ranges(selection.start..selection.end)
3764 {
3765 let close_range = close_range.to_inclusive();
3766 let destination = if close_range.contains(&selection.start)
3767 && close_range.contains(&selection.end)
3768 {
3769 open_range.end
3770 } else {
3771 *close_range.start()
3772 };
3773 selection.start = destination;
3774 selection.end = destination;
3775 }
3776 }
3777
3778 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3779 }
3780
3781 pub fn show_next_diagnostic(&mut self, _: &ShowNextDiagnostic, cx: &mut ViewContext<Self>) {
3782 let buffer = self.buffer.read(cx).snapshot(cx);
3783 let selection = self.newest_selection::<usize>(&buffer);
3784 let mut active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
3785 active_diagnostics
3786 .primary_range
3787 .to_offset(&buffer)
3788 .to_inclusive()
3789 });
3790 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
3791 if active_primary_range.contains(&selection.head()) {
3792 *active_primary_range.end()
3793 } else {
3794 selection.head()
3795 }
3796 } else {
3797 selection.head()
3798 };
3799
3800 loop {
3801 let next_group = buffer
3802 .diagnostics_in_range::<_, usize>(search_start..buffer.len())
3803 .find_map(|entry| {
3804 if entry.diagnostic.is_primary
3805 && !entry.range.is_empty()
3806 && Some(entry.range.end) != active_primary_range.as_ref().map(|r| *r.end())
3807 {
3808 Some((entry.range, entry.diagnostic.group_id))
3809 } else {
3810 None
3811 }
3812 });
3813
3814 if let Some((primary_range, group_id)) = next_group {
3815 self.activate_diagnostics(group_id, cx);
3816 self.update_selections(
3817 vec![Selection {
3818 id: selection.id,
3819 start: primary_range.start,
3820 end: primary_range.start,
3821 reversed: false,
3822 goal: SelectionGoal::None,
3823 }],
3824 Some(Autoscroll::Center),
3825 cx,
3826 );
3827 break;
3828 } else if search_start == 0 {
3829 break;
3830 } else {
3831 // Cycle around to the start of the buffer, potentially moving back to the start of
3832 // the currently active diagnostic.
3833 search_start = 0;
3834 active_primary_range.take();
3835 }
3836 }
3837 }
3838
3839 pub fn go_to_definition(
3840 workspace: &mut Workspace,
3841 _: &GoToDefinition,
3842 cx: &mut ViewContext<Workspace>,
3843 ) {
3844 let active_item = workspace.active_item(cx);
3845 let editor_handle = if let Some(editor) = active_item
3846 .as_ref()
3847 .and_then(|item| item.act_as::<Self>(cx))
3848 {
3849 editor
3850 } else {
3851 return;
3852 };
3853
3854 let editor = editor_handle.read(cx);
3855 let buffer = editor.buffer.read(cx);
3856 let head = editor.newest_selection::<usize>(&buffer.read(cx)).head();
3857 let (buffer, head) = editor.buffer.read(cx).text_anchor_for_position(head, cx);
3858 let definitions = workspace
3859 .project()
3860 .update(cx, |project, cx| project.definition(&buffer, head, cx));
3861 cx.spawn(|workspace, mut cx| async move {
3862 let definitions = definitions.await?;
3863 workspace.update(&mut cx, |workspace, cx| {
3864 for definition in definitions {
3865 let range = definition
3866 .target_range
3867 .to_offset(definition.target_buffer.read(cx));
3868 let target_editor_handle = workspace
3869 .open_item(BufferItemHandle(definition.target_buffer), cx)
3870 .downcast::<Self>()
3871 .unwrap();
3872
3873 target_editor_handle.update(cx, |target_editor, cx| {
3874 // When selecting a definition in a different buffer, disable the nav history
3875 // to avoid creating a history entry at the previous cursor location.
3876 let disabled_history = if editor_handle == target_editor_handle {
3877 None
3878 } else {
3879 target_editor.nav_history.take()
3880 };
3881 target_editor.select_ranges([range], Some(Autoscroll::Center), cx);
3882 if disabled_history.is_some() {
3883 target_editor.nav_history = disabled_history;
3884 }
3885 });
3886 }
3887 });
3888
3889 Ok::<(), anyhow::Error>(())
3890 })
3891 .detach_and_log_err(cx);
3892 }
3893
3894 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
3895 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
3896 let buffer = self.buffer.read(cx).snapshot(cx);
3897 let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
3898 let is_valid = buffer
3899 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone())
3900 .any(|entry| {
3901 entry.diagnostic.is_primary
3902 && !entry.range.is_empty()
3903 && entry.range.start == primary_range_start
3904 && entry.diagnostic.message == active_diagnostics.primary_message
3905 });
3906
3907 if is_valid != active_diagnostics.is_valid {
3908 active_diagnostics.is_valid = is_valid;
3909 let mut new_styles = HashMap::default();
3910 for (block_id, diagnostic) in &active_diagnostics.blocks {
3911 new_styles.insert(
3912 *block_id,
3913 diagnostic_block_renderer(
3914 diagnostic.clone(),
3915 is_valid,
3916 self.build_settings.clone(),
3917 ),
3918 );
3919 }
3920 self.display_map
3921 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
3922 }
3923 }
3924 }
3925
3926 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) {
3927 self.dismiss_diagnostics(cx);
3928 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
3929 let buffer = self.buffer.read(cx).snapshot(cx);
3930
3931 let mut primary_range = None;
3932 let mut primary_message = None;
3933 let mut group_end = Point::zero();
3934 let diagnostic_group = buffer
3935 .diagnostic_group::<Point>(group_id)
3936 .map(|entry| {
3937 if entry.range.end > group_end {
3938 group_end = entry.range.end;
3939 }
3940 if entry.diagnostic.is_primary {
3941 primary_range = Some(entry.range.clone());
3942 primary_message = Some(entry.diagnostic.message.clone());
3943 }
3944 entry
3945 })
3946 .collect::<Vec<_>>();
3947 let primary_range = primary_range.unwrap();
3948 let primary_message = primary_message.unwrap();
3949 let primary_range =
3950 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
3951
3952 let blocks = display_map
3953 .insert_blocks(
3954 diagnostic_group.iter().map(|entry| {
3955 let build_settings = self.build_settings.clone();
3956 let diagnostic = entry.diagnostic.clone();
3957 let message_height = diagnostic.message.lines().count() as u8;
3958
3959 BlockProperties {
3960 position: buffer.anchor_after(entry.range.start),
3961 height: message_height,
3962 render: diagnostic_block_renderer(diagnostic, true, build_settings),
3963 disposition: BlockDisposition::Below,
3964 }
3965 }),
3966 cx,
3967 )
3968 .into_iter()
3969 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
3970 .collect();
3971
3972 Some(ActiveDiagnosticGroup {
3973 primary_range,
3974 primary_message,
3975 blocks,
3976 is_valid: true,
3977 })
3978 });
3979 }
3980
3981 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
3982 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
3983 self.display_map.update(cx, |display_map, cx| {
3984 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
3985 });
3986 cx.notify();
3987 }
3988 }
3989
3990 fn build_columnar_selection(
3991 &mut self,
3992 display_map: &DisplaySnapshot,
3993 row: u32,
3994 columns: &Range<u32>,
3995 reversed: bool,
3996 ) -> Option<Selection<Point>> {
3997 let is_empty = columns.start == columns.end;
3998 let line_len = display_map.line_len(row);
3999 if columns.start < line_len || (is_empty && columns.start == line_len) {
4000 let start = DisplayPoint::new(row, columns.start);
4001 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
4002 Some(Selection {
4003 id: post_inc(&mut self.next_selection_id),
4004 start: start.to_point(display_map),
4005 end: end.to_point(display_map),
4006 reversed,
4007 goal: SelectionGoal::ColumnRange {
4008 start: columns.start,
4009 end: columns.end,
4010 },
4011 })
4012 } else {
4013 None
4014 }
4015 }
4016
4017 pub fn local_selections_in_range(
4018 &self,
4019 range: Range<Anchor>,
4020 display_map: &DisplaySnapshot,
4021 ) -> Vec<Selection<Point>> {
4022 let buffer = &display_map.buffer_snapshot;
4023
4024 let start_ix = match self
4025 .selections
4026 .binary_search_by(|probe| probe.end.cmp(&range.start, &buffer).unwrap())
4027 {
4028 Ok(ix) | Err(ix) => ix,
4029 };
4030 let end_ix = match self
4031 .selections
4032 .binary_search_by(|probe| probe.start.cmp(&range.end, &buffer).unwrap())
4033 {
4034 Ok(ix) => ix + 1,
4035 Err(ix) => ix,
4036 };
4037
4038 fn point_selection(
4039 selection: &Selection<Anchor>,
4040 buffer: &MultiBufferSnapshot,
4041 ) -> Selection<Point> {
4042 let start = selection.start.to_point(&buffer);
4043 let end = selection.end.to_point(&buffer);
4044 Selection {
4045 id: selection.id,
4046 start,
4047 end,
4048 reversed: selection.reversed,
4049 goal: selection.goal,
4050 }
4051 }
4052
4053 self.selections[start_ix..end_ix]
4054 .iter()
4055 .chain(
4056 self.pending_selection
4057 .as_ref()
4058 .map(|pending| &pending.selection),
4059 )
4060 .map(|s| point_selection(s, &buffer))
4061 .collect()
4062 }
4063
4064 pub fn local_selections<'a, D>(&self, cx: &'a AppContext) -> Vec<Selection<D>>
4065 where
4066 D: 'a + TextDimension + Ord + Sub<D, Output = D>,
4067 {
4068 let buffer = self.buffer.read(cx).snapshot(cx);
4069 let mut selections = self
4070 .resolve_selections::<D, _>(self.selections.iter(), &buffer)
4071 .peekable();
4072
4073 let mut pending_selection = self.pending_selection::<D>(&buffer);
4074
4075 iter::from_fn(move || {
4076 if let Some(pending) = pending_selection.as_mut() {
4077 while let Some(next_selection) = selections.peek() {
4078 if pending.start <= next_selection.end && pending.end >= next_selection.start {
4079 let next_selection = selections.next().unwrap();
4080 if next_selection.start < pending.start {
4081 pending.start = next_selection.start;
4082 }
4083 if next_selection.end > pending.end {
4084 pending.end = next_selection.end;
4085 }
4086 } else if next_selection.end < pending.start {
4087 return selections.next();
4088 } else {
4089 break;
4090 }
4091 }
4092
4093 pending_selection.take()
4094 } else {
4095 selections.next()
4096 }
4097 })
4098 .collect()
4099 }
4100
4101 fn resolve_selections<'a, D, I>(
4102 &self,
4103 selections: I,
4104 snapshot: &MultiBufferSnapshot,
4105 ) -> impl 'a + Iterator<Item = Selection<D>>
4106 where
4107 D: TextDimension + Ord + Sub<D, Output = D>,
4108 I: 'a + IntoIterator<Item = &'a Selection<Anchor>>,
4109 {
4110 let (to_summarize, selections) = selections.into_iter().tee();
4111 let mut summaries = snapshot
4112 .summaries_for_anchors::<D, _>(to_summarize.flat_map(|s| [&s.start, &s.end]))
4113 .into_iter();
4114 selections.map(move |s| Selection {
4115 id: s.id,
4116 start: summaries.next().unwrap(),
4117 end: summaries.next().unwrap(),
4118 reversed: s.reversed,
4119 goal: s.goal,
4120 })
4121 }
4122
4123 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4124 &self,
4125 snapshot: &MultiBufferSnapshot,
4126 ) -> Option<Selection<D>> {
4127 self.pending_selection
4128 .as_ref()
4129 .map(|pending| self.resolve_selection(&pending.selection, &snapshot))
4130 }
4131
4132 fn resolve_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4133 &self,
4134 selection: &Selection<Anchor>,
4135 buffer: &MultiBufferSnapshot,
4136 ) -> Selection<D> {
4137 Selection {
4138 id: selection.id,
4139 start: selection.start.summary::<D>(&buffer),
4140 end: selection.end.summary::<D>(&buffer),
4141 reversed: selection.reversed,
4142 goal: selection.goal,
4143 }
4144 }
4145
4146 fn selection_count<'a>(&self) -> usize {
4147 let mut count = self.selections.len();
4148 if self.pending_selection.is_some() {
4149 count += 1;
4150 }
4151 count
4152 }
4153
4154 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4155 &self,
4156 snapshot: &MultiBufferSnapshot,
4157 ) -> Selection<D> {
4158 self.selections
4159 .iter()
4160 .min_by_key(|s| s.id)
4161 .map(|selection| self.resolve_selection(selection, snapshot))
4162 .or_else(|| self.pending_selection(snapshot))
4163 .unwrap()
4164 }
4165
4166 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4167 &self,
4168 snapshot: &MultiBufferSnapshot,
4169 ) -> Selection<D> {
4170 self.resolve_selection(self.newest_anchor_selection().unwrap(), snapshot)
4171 }
4172
4173 pub fn newest_anchor_selection(&self) -> Option<&Selection<Anchor>> {
4174 self.pending_selection
4175 .as_ref()
4176 .map(|s| &s.selection)
4177 .or_else(|| self.selections.iter().max_by_key(|s| s.id))
4178 }
4179
4180 pub fn update_selections<T>(
4181 &mut self,
4182 mut selections: Vec<Selection<T>>,
4183 autoscroll: Option<Autoscroll>,
4184 cx: &mut ViewContext<Self>,
4185 ) where
4186 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
4187 {
4188 let buffer = self.buffer.read(cx).snapshot(cx);
4189 selections.sort_unstable_by_key(|s| s.start);
4190
4191 // Merge overlapping selections.
4192 let mut i = 1;
4193 while i < selections.len() {
4194 if selections[i - 1].end >= selections[i].start {
4195 let removed = selections.remove(i);
4196 if removed.start < selections[i - 1].start {
4197 selections[i - 1].start = removed.start;
4198 }
4199 if removed.end > selections[i - 1].end {
4200 selections[i - 1].end = removed.end;
4201 }
4202 } else {
4203 i += 1;
4204 }
4205 }
4206
4207 if let Some(autoscroll) = autoscroll {
4208 self.request_autoscroll(autoscroll, cx);
4209 }
4210
4211 self.set_selections(
4212 Arc::from_iter(selections.into_iter().map(|selection| {
4213 let end_bias = if selection.end > selection.start {
4214 Bias::Left
4215 } else {
4216 Bias::Right
4217 };
4218 Selection {
4219 id: selection.id,
4220 start: buffer.anchor_after(selection.start),
4221 end: buffer.anchor_at(selection.end, end_bias),
4222 reversed: selection.reversed,
4223 goal: selection.goal,
4224 }
4225 })),
4226 cx,
4227 );
4228 }
4229
4230 /// Compute new ranges for any selections that were located in excerpts that have
4231 /// since been removed.
4232 ///
4233 /// Returns a `HashMap` indicating which selections whose former head position
4234 /// was no longer present. The keys of the map are selection ids. The values are
4235 /// the id of the new excerpt where the head of the selection has been moved.
4236 pub fn refresh_selections(&mut self, cx: &mut ViewContext<Self>) -> HashMap<usize, ExcerptId> {
4237 let snapshot = self.buffer.read(cx).read(cx);
4238 let anchors_with_status = snapshot.refresh_anchors(
4239 self.selections
4240 .iter()
4241 .flat_map(|selection| [&selection.start, &selection.end]),
4242 );
4243 let offsets =
4244 snapshot.summaries_for_anchors::<usize, _>(anchors_with_status.iter().map(|a| &a.1));
4245 let offsets = offsets.chunks(2);
4246 let statuses = anchors_with_status
4247 .chunks(2)
4248 .map(|a| (a[0].0 / 2, a[0].2, a[1].2));
4249
4250 let mut selections_with_lost_position = HashMap::default();
4251 let new_selections = offsets
4252 .zip(statuses)
4253 .map(|(offsets, (selection_ix, kept_start, kept_end))| {
4254 let selection = &self.selections[selection_ix];
4255 let kept_head = if selection.reversed {
4256 kept_start
4257 } else {
4258 kept_end
4259 };
4260 if !kept_head {
4261 selections_with_lost_position
4262 .insert(selection.id, selection.head().excerpt_id.clone());
4263 }
4264
4265 Selection {
4266 id: selection.id,
4267 start: offsets[0],
4268 end: offsets[1],
4269 reversed: selection.reversed,
4270 goal: selection.goal,
4271 }
4272 })
4273 .collect();
4274 drop(snapshot);
4275 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
4276 selections_with_lost_position
4277 }
4278
4279 fn set_selections(&mut self, selections: Arc<[Selection<Anchor>]>, cx: &mut ViewContext<Self>) {
4280 let old_cursor_position = self.newest_anchor_selection().map(|s| s.head());
4281 self.selections = selections;
4282 if self.focused {
4283 self.buffer.update(cx, |buffer, cx| {
4284 buffer.set_active_selections(&self.selections, cx)
4285 });
4286 }
4287
4288 let buffer = self.buffer.read(cx).snapshot(cx);
4289 self.pending_selection = None;
4290 self.add_selections_state = None;
4291 self.select_next_state = None;
4292 self.select_larger_syntax_node_stack.clear();
4293 self.autoclose_stack.invalidate(&self.selections, &buffer);
4294 self.snippet_stack.invalidate(&self.selections, &buffer);
4295
4296 let new_cursor_position = self
4297 .selections
4298 .iter()
4299 .max_by_key(|s| s.id)
4300 .map(|s| s.head());
4301 if let Some(old_cursor_position) = old_cursor_position {
4302 if let Some(new_cursor_position) = new_cursor_position.as_ref() {
4303 self.push_to_nav_history(
4304 old_cursor_position,
4305 Some(new_cursor_position.to_point(&buffer)),
4306 cx,
4307 );
4308 }
4309 }
4310
4311 let completion_menu = match self.context_menu.as_mut() {
4312 Some(ContextMenu::Completions(menu)) => Some(menu),
4313 _ => {
4314 self.context_menu.take();
4315 None
4316 }
4317 };
4318
4319 if let Some((completion_menu, cursor_position)) = completion_menu.zip(new_cursor_position) {
4320 let cursor_position = cursor_position.to_offset(&buffer);
4321 let (word_range, kind) =
4322 buffer.surrounding_word(completion_menu.initial_position.clone());
4323 if kind == Some(CharKind::Word) && word_range.to_inclusive().contains(&cursor_position)
4324 {
4325 let query = Self::completion_query(&buffer, cursor_position);
4326 cx.background()
4327 .block(completion_menu.filter(query.as_deref(), cx.background().clone()));
4328 self.show_completions(&ShowCompletions, cx);
4329 } else {
4330 self.hide_context_menu(cx);
4331 }
4332 }
4333
4334 self.pause_cursor_blinking(cx);
4335 cx.emit(Event::SelectionsChanged);
4336 }
4337
4338 pub fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
4339 self.autoscroll_request = Some(autoscroll);
4340 cx.notify();
4341 }
4342
4343 fn start_transaction(&mut self, cx: &mut ViewContext<Self>) {
4344 self.start_transaction_at(Instant::now(), cx);
4345 }
4346
4347 fn start_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
4348 self.end_selection(cx);
4349 if let Some(tx_id) = self
4350 .buffer
4351 .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
4352 {
4353 self.selection_history
4354 .insert(tx_id, (self.selections.clone(), None));
4355 }
4356 }
4357
4358 fn end_transaction(&mut self, cx: &mut ViewContext<Self>) {
4359 self.end_transaction_at(Instant::now(), cx);
4360 }
4361
4362 fn end_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
4363 if let Some(tx_id) = self
4364 .buffer
4365 .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
4366 {
4367 if let Some((_, end_selections)) = self.selection_history.get_mut(&tx_id) {
4368 *end_selections = Some(self.selections.clone());
4369 } else {
4370 log::error!("unexpectedly ended a transaction that wasn't started by this editor");
4371 }
4372 }
4373 }
4374
4375 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
4376 log::info!("Editor::page_up");
4377 }
4378
4379 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
4380 log::info!("Editor::page_down");
4381 }
4382
4383 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
4384 let mut fold_ranges = Vec::new();
4385
4386 let selections = self.local_selections::<Point>(cx);
4387 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4388 for selection in selections {
4389 let range = selection.display_range(&display_map).sorted();
4390 let buffer_start_row = range.start.to_point(&display_map).row;
4391
4392 for row in (0..=range.end.row()).rev() {
4393 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
4394 let fold_range = self.foldable_range_for_line(&display_map, row);
4395 if fold_range.end.row >= buffer_start_row {
4396 fold_ranges.push(fold_range);
4397 if row <= range.start.row() {
4398 break;
4399 }
4400 }
4401 }
4402 }
4403 }
4404
4405 self.fold_ranges(fold_ranges, cx);
4406 }
4407
4408 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
4409 let selections = self.local_selections::<Point>(cx);
4410 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4411 let buffer = &display_map.buffer_snapshot;
4412 let ranges = selections
4413 .iter()
4414 .map(|s| {
4415 let range = s.display_range(&display_map).sorted();
4416 let mut start = range.start.to_point(&display_map);
4417 let mut end = range.end.to_point(&display_map);
4418 start.column = 0;
4419 end.column = buffer.line_len(end.row);
4420 start..end
4421 })
4422 .collect::<Vec<_>>();
4423 self.unfold_ranges(ranges, cx);
4424 }
4425
4426 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
4427 let max_point = display_map.max_point();
4428 if display_row >= max_point.row() {
4429 false
4430 } else {
4431 let (start_indent, is_blank) = display_map.line_indent(display_row);
4432 if is_blank {
4433 false
4434 } else {
4435 for display_row in display_row + 1..=max_point.row() {
4436 let (indent, is_blank) = display_map.line_indent(display_row);
4437 if !is_blank {
4438 return indent > start_indent;
4439 }
4440 }
4441 false
4442 }
4443 }
4444 }
4445
4446 fn foldable_range_for_line(
4447 &self,
4448 display_map: &DisplaySnapshot,
4449 start_row: u32,
4450 ) -> Range<Point> {
4451 let max_point = display_map.max_point();
4452
4453 let (start_indent, _) = display_map.line_indent(start_row);
4454 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
4455 let mut end = None;
4456 for row in start_row + 1..=max_point.row() {
4457 let (indent, is_blank) = display_map.line_indent(row);
4458 if !is_blank && indent <= start_indent {
4459 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
4460 break;
4461 }
4462 }
4463
4464 let end = end.unwrap_or(max_point);
4465 return start.to_point(display_map)..end.to_point(display_map);
4466 }
4467
4468 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
4469 let selections = self.local_selections::<Point>(cx);
4470 let ranges = selections.into_iter().map(|s| s.start..s.end);
4471 self.fold_ranges(ranges, cx);
4472 }
4473
4474 fn fold_ranges<T: ToOffset>(
4475 &mut self,
4476 ranges: impl IntoIterator<Item = Range<T>>,
4477 cx: &mut ViewContext<Self>,
4478 ) {
4479 let mut ranges = ranges.into_iter().peekable();
4480 if ranges.peek().is_some() {
4481 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
4482 self.request_autoscroll(Autoscroll::Fit, cx);
4483 cx.notify();
4484 }
4485 }
4486
4487 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
4488 if !ranges.is_empty() {
4489 self.display_map
4490 .update(cx, |map, cx| map.unfold(ranges, cx));
4491 self.request_autoscroll(Autoscroll::Fit, cx);
4492 cx.notify();
4493 }
4494 }
4495
4496 pub fn insert_blocks(
4497 &mut self,
4498 blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
4499 cx: &mut ViewContext<Self>,
4500 ) -> Vec<BlockId> {
4501 let blocks = self
4502 .display_map
4503 .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
4504 self.request_autoscroll(Autoscroll::Fit, cx);
4505 blocks
4506 }
4507
4508 pub fn replace_blocks(
4509 &mut self,
4510 blocks: HashMap<BlockId, RenderBlock>,
4511 cx: &mut ViewContext<Self>,
4512 ) {
4513 self.display_map
4514 .update(cx, |display_map, _| display_map.replace_blocks(blocks));
4515 self.request_autoscroll(Autoscroll::Fit, cx);
4516 }
4517
4518 pub fn remove_blocks(&mut self, block_ids: HashSet<BlockId>, cx: &mut ViewContext<Self>) {
4519 self.display_map.update(cx, |display_map, cx| {
4520 display_map.remove_blocks(block_ids, cx)
4521 });
4522 }
4523
4524 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
4525 self.display_map
4526 .update(cx, |map, cx| map.snapshot(cx))
4527 .longest_row()
4528 }
4529
4530 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
4531 self.display_map
4532 .update(cx, |map, cx| map.snapshot(cx))
4533 .max_point()
4534 }
4535
4536 pub fn text(&self, cx: &AppContext) -> String {
4537 self.buffer.read(cx).read(cx).text()
4538 }
4539
4540 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
4541 self.display_map
4542 .update(cx, |map, cx| map.snapshot(cx))
4543 .text()
4544 }
4545
4546 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
4547 self.display_map
4548 .update(cx, |map, cx| map.set_wrap_width(width, cx))
4549 }
4550
4551 pub fn set_highlighted_rows(&mut self, rows: Option<Range<u32>>) {
4552 self.highlighted_rows = rows;
4553 }
4554
4555 pub fn highlighted_rows(&self) -> Option<Range<u32>> {
4556 self.highlighted_rows.clone()
4557 }
4558
4559 pub fn highlight_ranges<T: 'static>(
4560 &mut self,
4561 ranges: Vec<Range<Anchor>>,
4562 color: Color,
4563 cx: &mut ViewContext<Self>,
4564 ) {
4565 self.highlighted_ranges
4566 .insert(TypeId::of::<T>(), (color, ranges));
4567 cx.notify();
4568 }
4569
4570 pub fn clear_highlighted_ranges<T: 'static>(&mut self, cx: &mut ViewContext<Self>) {
4571 self.highlighted_ranges.remove(&TypeId::of::<T>());
4572 cx.notify();
4573 }
4574
4575 #[cfg(feature = "test-support")]
4576 pub fn all_highlighted_ranges(
4577 &mut self,
4578 cx: &mut ViewContext<Self>,
4579 ) -> Vec<(Range<DisplayPoint>, Color)> {
4580 let snapshot = self.snapshot(cx);
4581 let buffer = &snapshot.buffer_snapshot;
4582 let start = buffer.anchor_before(0);
4583 let end = buffer.anchor_after(buffer.len());
4584 self.highlighted_ranges_in_range(start..end, &snapshot)
4585 }
4586
4587 pub fn highlighted_ranges_for_type<T: 'static>(&self) -> Option<(Color, &[Range<Anchor>])> {
4588 self.highlighted_ranges
4589 .get(&TypeId::of::<T>())
4590 .map(|(color, ranges)| (*color, ranges.as_slice()))
4591 }
4592
4593 pub fn highlighted_ranges_in_range(
4594 &self,
4595 search_range: Range<Anchor>,
4596 display_snapshot: &DisplaySnapshot,
4597 ) -> Vec<(Range<DisplayPoint>, Color)> {
4598 let mut results = Vec::new();
4599 let buffer = &display_snapshot.buffer_snapshot;
4600 for (color, ranges) in self.highlighted_ranges.values() {
4601 let start_ix = match ranges.binary_search_by(|probe| {
4602 let cmp = probe.end.cmp(&search_range.start, &buffer).unwrap();
4603 if cmp.is_gt() {
4604 Ordering::Greater
4605 } else {
4606 Ordering::Less
4607 }
4608 }) {
4609 Ok(i) | Err(i) => i,
4610 };
4611 for range in &ranges[start_ix..] {
4612 if range.start.cmp(&search_range.end, &buffer).unwrap().is_ge() {
4613 break;
4614 }
4615 let start = range
4616 .start
4617 .to_point(buffer)
4618 .to_display_point(display_snapshot);
4619 let end = range
4620 .end
4621 .to_point(buffer)
4622 .to_display_point(display_snapshot);
4623 results.push((start..end, *color))
4624 }
4625 }
4626 results
4627 }
4628
4629 fn next_blink_epoch(&mut self) -> usize {
4630 self.blink_epoch += 1;
4631 self.blink_epoch
4632 }
4633
4634 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
4635 if !self.focused {
4636 return;
4637 }
4638
4639 self.show_local_cursors = true;
4640 cx.notify();
4641
4642 let epoch = self.next_blink_epoch();
4643 cx.spawn(|this, mut cx| {
4644 let this = this.downgrade();
4645 async move {
4646 Timer::after(CURSOR_BLINK_INTERVAL).await;
4647 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
4648 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
4649 }
4650 }
4651 })
4652 .detach();
4653 }
4654
4655 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
4656 if epoch == self.blink_epoch {
4657 self.blinking_paused = false;
4658 self.blink_cursors(epoch, cx);
4659 }
4660 }
4661
4662 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
4663 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
4664 self.show_local_cursors = !self.show_local_cursors;
4665 cx.notify();
4666
4667 let epoch = self.next_blink_epoch();
4668 cx.spawn(|this, mut cx| {
4669 let this = this.downgrade();
4670 async move {
4671 Timer::after(CURSOR_BLINK_INTERVAL).await;
4672 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
4673 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
4674 }
4675 }
4676 })
4677 .detach();
4678 }
4679 }
4680
4681 pub fn show_local_cursors(&self) -> bool {
4682 self.show_local_cursors
4683 }
4684
4685 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
4686 self.refresh_active_diagnostics(cx);
4687 cx.notify();
4688 }
4689
4690 fn on_buffer_event(
4691 &mut self,
4692 _: ModelHandle<MultiBuffer>,
4693 event: &language::Event,
4694 cx: &mut ViewContext<Self>,
4695 ) {
4696 match event {
4697 language::Event::Edited => cx.emit(Event::Edited),
4698 language::Event::Dirtied => cx.emit(Event::Dirtied),
4699 language::Event::Saved => cx.emit(Event::Saved),
4700 language::Event::FileHandleChanged => cx.emit(Event::TitleChanged),
4701 language::Event::Reloaded => cx.emit(Event::TitleChanged),
4702 language::Event::Closed => cx.emit(Event::Closed),
4703 _ => {}
4704 }
4705 }
4706
4707 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
4708 cx.notify();
4709 }
4710}
4711
4712impl EditorSnapshot {
4713 pub fn is_focused(&self) -> bool {
4714 self.is_focused
4715 }
4716
4717 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
4718 self.placeholder_text.as_ref()
4719 }
4720
4721 pub fn scroll_position(&self) -> Vector2F {
4722 compute_scroll_position(
4723 &self.display_snapshot,
4724 self.scroll_position,
4725 &self.scroll_top_anchor,
4726 )
4727 }
4728}
4729
4730impl Deref for EditorSnapshot {
4731 type Target = DisplaySnapshot;
4732
4733 fn deref(&self) -> &Self::Target {
4734 &self.display_snapshot
4735 }
4736}
4737
4738impl EditorSettings {
4739 #[cfg(any(test, feature = "test-support"))]
4740 pub fn test(cx: &AppContext) -> Self {
4741 use theme::{ContainedLabel, ContainedText, DiagnosticHeader, DiagnosticPathHeader};
4742
4743 Self {
4744 tab_size: 4,
4745 soft_wrap: SoftWrap::None,
4746 style: {
4747 let font_cache: &gpui::FontCache = cx.font_cache();
4748 let font_family_name = Arc::from("Monaco");
4749 let font_properties = Default::default();
4750 let font_family_id = font_cache.load_family(&[&font_family_name]).unwrap();
4751 let font_id = font_cache
4752 .select_font(font_family_id, &font_properties)
4753 .unwrap();
4754 let text = gpui::fonts::TextStyle {
4755 font_family_name,
4756 font_family_id,
4757 font_id,
4758 font_size: 14.,
4759 color: gpui::color::Color::from_u32(0xff0000ff),
4760 font_properties,
4761 underline: None,
4762 };
4763 let default_diagnostic_style = DiagnosticStyle {
4764 message: text.clone().into(),
4765 header: Default::default(),
4766 text_scale_factor: 1.,
4767 };
4768 EditorStyle {
4769 text: text.clone(),
4770 placeholder_text: None,
4771 background: Default::default(),
4772 gutter_background: Default::default(),
4773 gutter_padding_factor: 2.,
4774 active_line_background: Default::default(),
4775 highlighted_line_background: Default::default(),
4776 line_number: Default::default(),
4777 line_number_active: Default::default(),
4778 selection: Default::default(),
4779 guest_selections: Default::default(),
4780 syntax: Default::default(),
4781 diagnostic_path_header: DiagnosticPathHeader {
4782 container: Default::default(),
4783 filename: ContainedText {
4784 container: Default::default(),
4785 text: text.clone(),
4786 },
4787 path: ContainedText {
4788 container: Default::default(),
4789 text: text.clone(),
4790 },
4791 text_scale_factor: 1.,
4792 },
4793 diagnostic_header: DiagnosticHeader {
4794 container: Default::default(),
4795 message: ContainedLabel {
4796 container: Default::default(),
4797 label: text.clone().into(),
4798 },
4799 code: ContainedText {
4800 container: Default::default(),
4801 text: text.clone(),
4802 },
4803 icon_width_factor: 1.,
4804 text_scale_factor: 1.,
4805 },
4806 error_diagnostic: default_diagnostic_style.clone(),
4807 invalid_error_diagnostic: default_diagnostic_style.clone(),
4808 warning_diagnostic: default_diagnostic_style.clone(),
4809 invalid_warning_diagnostic: default_diagnostic_style.clone(),
4810 information_diagnostic: default_diagnostic_style.clone(),
4811 invalid_information_diagnostic: default_diagnostic_style.clone(),
4812 hint_diagnostic: default_diagnostic_style.clone(),
4813 invalid_hint_diagnostic: default_diagnostic_style.clone(),
4814 autocomplete: Default::default(),
4815 }
4816 },
4817 }
4818 }
4819}
4820
4821fn compute_scroll_position(
4822 snapshot: &DisplaySnapshot,
4823 mut scroll_position: Vector2F,
4824 scroll_top_anchor: &Option<Anchor>,
4825) -> Vector2F {
4826 if let Some(anchor) = scroll_top_anchor {
4827 let scroll_top = anchor.to_display_point(snapshot).row() as f32;
4828 scroll_position.set_y(scroll_top + scroll_position.y());
4829 } else {
4830 scroll_position.set_y(0.);
4831 }
4832 scroll_position
4833}
4834
4835#[derive(Copy, Clone)]
4836pub enum Event {
4837 Activate,
4838 Edited,
4839 Blurred,
4840 Dirtied,
4841 Saved,
4842 TitleChanged,
4843 SelectionsChanged,
4844 Closed,
4845}
4846
4847impl Entity for Editor {
4848 type Event = Event;
4849}
4850
4851impl View for Editor {
4852 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
4853 let settings = (self.build_settings)(cx);
4854 self.display_map.update(cx, |map, cx| {
4855 map.set_font(
4856 settings.style.text.font_id,
4857 settings.style.text.font_size,
4858 cx,
4859 )
4860 });
4861 EditorElement::new(self.handle.clone(), settings).boxed()
4862 }
4863
4864 fn ui_name() -> &'static str {
4865 "Editor"
4866 }
4867
4868 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
4869 self.focused = true;
4870 self.blink_cursors(self.blink_epoch, cx);
4871 self.buffer.update(cx, |buffer, cx| {
4872 buffer.finalize_last_transaction(cx);
4873 buffer.set_active_selections(&self.selections, cx)
4874 });
4875 }
4876
4877 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
4878 self.focused = false;
4879 self.show_local_cursors = false;
4880 self.buffer
4881 .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
4882 self.hide_context_menu(cx);
4883 cx.emit(Event::Blurred);
4884 cx.notify();
4885 }
4886
4887 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
4888 let mut cx = Self::default_keymap_context();
4889 let mode = match self.mode {
4890 EditorMode::SingleLine => "single_line",
4891 EditorMode::AutoHeight { .. } => "auto_height",
4892 EditorMode::Full => "full",
4893 };
4894 cx.map.insert("mode".into(), mode.into());
4895 match self.context_menu.as_ref() {
4896 Some(ContextMenu::Completions(_)) => {
4897 cx.set.insert("showing_completions".into());
4898 }
4899 Some(ContextMenu::CodeActions(_)) => {
4900 cx.set.insert("showing_code_actions".into());
4901 }
4902 None => {}
4903 }
4904 cx
4905 }
4906}
4907
4908impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
4909 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
4910 let start = self.start.to_point(buffer);
4911 let end = self.end.to_point(buffer);
4912 if self.reversed {
4913 end..start
4914 } else {
4915 start..end
4916 }
4917 }
4918
4919 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
4920 let start = self.start.to_offset(buffer);
4921 let end = self.end.to_offset(buffer);
4922 if self.reversed {
4923 end..start
4924 } else {
4925 start..end
4926 }
4927 }
4928
4929 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
4930 let start = self
4931 .start
4932 .to_point(&map.buffer_snapshot)
4933 .to_display_point(map);
4934 let end = self
4935 .end
4936 .to_point(&map.buffer_snapshot)
4937 .to_display_point(map);
4938 if self.reversed {
4939 end..start
4940 } else {
4941 start..end
4942 }
4943 }
4944
4945 fn spanned_rows(
4946 &self,
4947 include_end_if_at_line_start: bool,
4948 map: &DisplaySnapshot,
4949 ) -> Range<u32> {
4950 let start = self.start.to_point(&map.buffer_snapshot);
4951 let mut end = self.end.to_point(&map.buffer_snapshot);
4952 if !include_end_if_at_line_start && start.row != end.row && end.column == 0 {
4953 end.row -= 1;
4954 }
4955
4956 let buffer_start = map.prev_line_boundary(start).0;
4957 let buffer_end = map.next_line_boundary(end).0;
4958 buffer_start.row..buffer_end.row + 1
4959 }
4960}
4961
4962impl<T: InvalidationRegion> InvalidationStack<T> {
4963 fn invalidate<S>(&mut self, selections: &[Selection<S>], buffer: &MultiBufferSnapshot)
4964 where
4965 S: Clone + ToOffset,
4966 {
4967 while let Some(region) = self.last() {
4968 let all_selections_inside_invalidation_ranges =
4969 if selections.len() == region.ranges().len() {
4970 selections
4971 .iter()
4972 .zip(region.ranges().iter().map(|r| r.to_offset(&buffer)))
4973 .all(|(selection, invalidation_range)| {
4974 let head = selection.head().to_offset(&buffer);
4975 invalidation_range.start <= head && invalidation_range.end >= head
4976 })
4977 } else {
4978 false
4979 };
4980
4981 if all_selections_inside_invalidation_ranges {
4982 break;
4983 } else {
4984 self.pop();
4985 }
4986 }
4987 }
4988}
4989
4990impl<T> Default for InvalidationStack<T> {
4991 fn default() -> Self {
4992 Self(Default::default())
4993 }
4994}
4995
4996impl<T> Deref for InvalidationStack<T> {
4997 type Target = Vec<T>;
4998
4999 fn deref(&self) -> &Self::Target {
5000 &self.0
5001 }
5002}
5003
5004impl<T> DerefMut for InvalidationStack<T> {
5005 fn deref_mut(&mut self) -> &mut Self::Target {
5006 &mut self.0
5007 }
5008}
5009
5010impl InvalidationRegion for BracketPairState {
5011 fn ranges(&self) -> &[Range<Anchor>] {
5012 &self.ranges
5013 }
5014}
5015
5016impl InvalidationRegion for SnippetState {
5017 fn ranges(&self) -> &[Range<Anchor>] {
5018 &self.ranges[self.active_index]
5019 }
5020}
5021
5022pub fn diagnostic_block_renderer(
5023 diagnostic: Diagnostic,
5024 is_valid: bool,
5025 build_settings: BuildSettings,
5026) -> RenderBlock {
5027 let mut highlighted_lines = Vec::new();
5028 for line in diagnostic.message.lines() {
5029 highlighted_lines.push(highlight_diagnostic_message(line));
5030 }
5031
5032 Arc::new(move |cx: &BlockContext| {
5033 let settings = build_settings(cx);
5034 let style = diagnostic_style(diagnostic.severity, is_valid, &settings.style);
5035 let font_size = (style.text_scale_factor * settings.style.text.font_size).round();
5036 Flex::column()
5037 .with_children(highlighted_lines.iter().map(|(line, highlights)| {
5038 Label::new(
5039 line.clone(),
5040 style.message.clone().with_font_size(font_size),
5041 )
5042 .with_highlights(highlights.clone())
5043 .contained()
5044 .with_margin_left(cx.anchor_x)
5045 .boxed()
5046 }))
5047 .aligned()
5048 .left()
5049 .boxed()
5050 })
5051}
5052
5053pub fn highlight_diagnostic_message(message: &str) -> (String, Vec<usize>) {
5054 let mut message_without_backticks = String::new();
5055 let mut prev_offset = 0;
5056 let mut inside_block = false;
5057 let mut highlights = Vec::new();
5058 for (match_ix, (offset, _)) in message
5059 .match_indices('`')
5060 .chain([(message.len(), "")])
5061 .enumerate()
5062 {
5063 message_without_backticks.push_str(&message[prev_offset..offset]);
5064 if inside_block {
5065 highlights.extend(prev_offset - match_ix..offset - match_ix);
5066 }
5067
5068 inside_block = !inside_block;
5069 prev_offset = offset + 1;
5070 }
5071
5072 (message_without_backticks, highlights)
5073}
5074
5075pub fn diagnostic_style(
5076 severity: DiagnosticSeverity,
5077 valid: bool,
5078 style: &EditorStyle,
5079) -> DiagnosticStyle {
5080 match (severity, valid) {
5081 (DiagnosticSeverity::ERROR, true) => style.error_diagnostic.clone(),
5082 (DiagnosticSeverity::ERROR, false) => style.invalid_error_diagnostic.clone(),
5083 (DiagnosticSeverity::WARNING, true) => style.warning_diagnostic.clone(),
5084 (DiagnosticSeverity::WARNING, false) => style.invalid_warning_diagnostic.clone(),
5085 (DiagnosticSeverity::INFORMATION, true) => style.information_diagnostic.clone(),
5086 (DiagnosticSeverity::INFORMATION, false) => style.invalid_information_diagnostic.clone(),
5087 (DiagnosticSeverity::HINT, true) => style.hint_diagnostic.clone(),
5088 (DiagnosticSeverity::HINT, false) => style.invalid_hint_diagnostic.clone(),
5089 _ => DiagnosticStyle {
5090 message: style.text.clone().into(),
5091 header: Default::default(),
5092 text_scale_factor: 1.,
5093 },
5094 }
5095}
5096
5097pub fn settings_builder(
5098 buffer: WeakModelHandle<MultiBuffer>,
5099 settings: watch::Receiver<workspace::Settings>,
5100) -> BuildSettings {
5101 Arc::new(move |cx| {
5102 let settings = settings.borrow();
5103 let font_cache = cx.font_cache();
5104 let font_family_id = settings.buffer_font_family;
5105 let font_family_name = cx.font_cache().family_name(font_family_id).unwrap();
5106 let font_properties = Default::default();
5107 let font_id = font_cache
5108 .select_font(font_family_id, &font_properties)
5109 .unwrap();
5110 let font_size = settings.buffer_font_size;
5111
5112 let mut theme = settings.theme.editor.clone();
5113 theme.text = TextStyle {
5114 color: theme.text.color,
5115 font_family_name,
5116 font_family_id,
5117 font_id,
5118 font_size,
5119 font_properties,
5120 underline: None,
5121 };
5122 let language = buffer.upgrade(cx).and_then(|buf| buf.read(cx).language(cx));
5123 let soft_wrap = match settings.soft_wrap(language) {
5124 workspace::settings::SoftWrap::None => SoftWrap::None,
5125 workspace::settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
5126 workspace::settings::SoftWrap::PreferredLineLength => {
5127 SoftWrap::Column(settings.preferred_line_length(language).saturating_sub(1))
5128 }
5129 };
5130
5131 EditorSettings {
5132 tab_size: settings.tab_size,
5133 soft_wrap,
5134 style: theme,
5135 }
5136 })
5137}
5138
5139pub fn combine_syntax_and_fuzzy_match_highlights(
5140 text: &str,
5141 default_style: HighlightStyle,
5142 syntax_ranges: impl Iterator<Item = (Range<usize>, HighlightStyle)>,
5143 match_indices: &[usize],
5144) -> Vec<(Range<usize>, HighlightStyle)> {
5145 let mut result = Vec::new();
5146 let mut match_indices = match_indices.iter().copied().peekable();
5147
5148 for (range, mut syntax_highlight) in syntax_ranges.chain([(usize::MAX..0, Default::default())])
5149 {
5150 syntax_highlight.font_properties.weight(Default::default());
5151
5152 // Add highlights for any fuzzy match characters before the next
5153 // syntax highlight range.
5154 while let Some(&match_index) = match_indices.peek() {
5155 if match_index >= range.start {
5156 break;
5157 }
5158 match_indices.next();
5159 let end_index = char_ix_after(match_index, text);
5160 let mut match_style = default_style;
5161 match_style.font_properties.weight(fonts::Weight::BOLD);
5162 result.push((match_index..end_index, match_style));
5163 }
5164
5165 if range.start == usize::MAX {
5166 break;
5167 }
5168
5169 // Add highlights for any fuzzy match characters within the
5170 // syntax highlight range.
5171 let mut offset = range.start;
5172 while let Some(&match_index) = match_indices.peek() {
5173 if match_index >= range.end {
5174 break;
5175 }
5176
5177 match_indices.next();
5178 if match_index > offset {
5179 result.push((offset..match_index, syntax_highlight));
5180 }
5181
5182 let mut end_index = char_ix_after(match_index, text);
5183 while let Some(&next_match_index) = match_indices.peek() {
5184 if next_match_index == end_index && next_match_index < range.end {
5185 end_index = char_ix_after(next_match_index, text);
5186 match_indices.next();
5187 } else {
5188 break;
5189 }
5190 }
5191
5192 let mut match_style = syntax_highlight;
5193 match_style.font_properties.weight(fonts::Weight::BOLD);
5194 result.push((match_index..end_index, match_style));
5195 offset = end_index;
5196 }
5197
5198 if offset < range.end {
5199 result.push((offset..range.end, syntax_highlight));
5200 }
5201 }
5202
5203 fn char_ix_after(ix: usize, text: &str) -> usize {
5204 ix + text[ix..].chars().next().unwrap().len_utf8()
5205 }
5206
5207 result
5208}
5209
5210fn styled_runs_for_completion_label<'a>(
5211 label: &'a CompletionLabel,
5212 default_color: Color,
5213 syntax_theme: &'a theme::SyntaxTheme,
5214) -> impl 'a + Iterator<Item = (Range<usize>, HighlightStyle)> {
5215 const MUTED_OPACITY: usize = 165;
5216
5217 let mut muted_default_style = HighlightStyle {
5218 color: default_color,
5219 ..Default::default()
5220 };
5221 muted_default_style.color.a = ((default_color.a as usize * MUTED_OPACITY) / 255) as u8;
5222
5223 let mut prev_end = label.filter_range.end;
5224 label
5225 .runs
5226 .iter()
5227 .enumerate()
5228 .flat_map(move |(ix, (range, highlight_id))| {
5229 let style = if let Some(style) = highlight_id.style(syntax_theme) {
5230 style
5231 } else {
5232 return Default::default();
5233 };
5234 let mut muted_style = style.clone();
5235 muted_style.color.a = ((style.color.a as usize * MUTED_OPACITY) / 255) as u8;
5236
5237 let mut runs = SmallVec::<[(Range<usize>, HighlightStyle); 3]>::new();
5238 if range.start >= label.filter_range.end {
5239 if range.start > prev_end {
5240 runs.push((prev_end..range.start, muted_default_style));
5241 }
5242 runs.push((range.clone(), muted_style));
5243 } else if range.end <= label.filter_range.end {
5244 runs.push((range.clone(), style));
5245 } else {
5246 runs.push((range.start..label.filter_range.end, style));
5247 runs.push((label.filter_range.end..range.end, muted_style));
5248 }
5249 prev_end = cmp::max(prev_end, range.end);
5250
5251 if ix + 1 == label.runs.len() && label.text.len() > prev_end {
5252 runs.push((prev_end..label.text.len(), muted_default_style));
5253 }
5254
5255 runs
5256 })
5257}
5258
5259#[cfg(test)]
5260mod tests {
5261 use super::*;
5262 use language::LanguageConfig;
5263 use lsp::FakeLanguageServer;
5264 use project::{FakeFs, ProjectPath};
5265 use std::{cell::RefCell, rc::Rc, time::Instant};
5266 use text::Point;
5267 use unindent::Unindent;
5268 use util::test::sample_text;
5269
5270 #[gpui::test]
5271 fn test_undo_redo_with_selection_restoration(cx: &mut MutableAppContext) {
5272 let mut now = Instant::now();
5273 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
5274 let group_interval = buffer.read(cx).transaction_group_interval();
5275 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5276 let settings = EditorSettings::test(cx);
5277 let (_, editor) = cx.add_window(Default::default(), |cx| {
5278 build_editor(buffer.clone(), settings, cx)
5279 });
5280
5281 editor.update(cx, |editor, cx| {
5282 editor.start_transaction_at(now, cx);
5283 editor.select_ranges([2..4], None, cx);
5284 editor.insert("cd", cx);
5285 editor.end_transaction_at(now, cx);
5286 assert_eq!(editor.text(cx), "12cd56");
5287 assert_eq!(editor.selected_ranges(cx), vec![4..4]);
5288
5289 editor.start_transaction_at(now, cx);
5290 editor.select_ranges([4..5], None, cx);
5291 editor.insert("e", cx);
5292 editor.end_transaction_at(now, cx);
5293 assert_eq!(editor.text(cx), "12cde6");
5294 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
5295
5296 now += group_interval + Duration::from_millis(1);
5297 editor.select_ranges([2..2], None, cx);
5298
5299 // Simulate an edit in another editor
5300 buffer.update(cx, |buffer, cx| {
5301 buffer.start_transaction_at(now, cx);
5302 buffer.edit([0..1], "a", cx);
5303 buffer.edit([1..1], "b", cx);
5304 buffer.end_transaction_at(now, cx);
5305 });
5306
5307 assert_eq!(editor.text(cx), "ab2cde6");
5308 assert_eq!(editor.selected_ranges(cx), vec![3..3]);
5309
5310 // Last transaction happened past the group interval in a different editor.
5311 // Undo it individually and don't restore selections.
5312 editor.undo(&Undo, cx);
5313 assert_eq!(editor.text(cx), "12cde6");
5314 assert_eq!(editor.selected_ranges(cx), vec![2..2]);
5315
5316 // First two transactions happened within the group interval in this editor.
5317 // Undo them together and restore selections.
5318 editor.undo(&Undo, cx);
5319 editor.undo(&Undo, cx); // Undo stack is empty here, so this is a no-op.
5320 assert_eq!(editor.text(cx), "123456");
5321 assert_eq!(editor.selected_ranges(cx), vec![0..0]);
5322
5323 // Redo the first two transactions together.
5324 editor.redo(&Redo, cx);
5325 assert_eq!(editor.text(cx), "12cde6");
5326 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
5327
5328 // Redo the last transaction on its own.
5329 editor.redo(&Redo, cx);
5330 assert_eq!(editor.text(cx), "ab2cde6");
5331 assert_eq!(editor.selected_ranges(cx), vec![6..6]);
5332
5333 // Test empty transactions.
5334 editor.start_transaction_at(now, cx);
5335 editor.end_transaction_at(now, cx);
5336 editor.undo(&Undo, cx);
5337 assert_eq!(editor.text(cx), "12cde6");
5338 });
5339 }
5340
5341 #[gpui::test]
5342 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
5343 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
5344 let settings = EditorSettings::test(cx);
5345 let (_, editor) =
5346 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5347
5348 editor.update(cx, |view, cx| {
5349 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
5350 });
5351
5352 assert_eq!(
5353 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5354 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
5355 );
5356
5357 editor.update(cx, |view, cx| {
5358 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
5359 });
5360
5361 assert_eq!(
5362 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5363 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
5364 );
5365
5366 editor.update(cx, |view, cx| {
5367 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
5368 });
5369
5370 assert_eq!(
5371 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5372 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
5373 );
5374
5375 editor.update(cx, |view, cx| {
5376 view.end_selection(cx);
5377 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
5378 });
5379
5380 assert_eq!(
5381 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5382 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
5383 );
5384
5385 editor.update(cx, |view, cx| {
5386 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
5387 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
5388 });
5389
5390 assert_eq!(
5391 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5392 [
5393 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
5394 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
5395 ]
5396 );
5397
5398 editor.update(cx, |view, cx| {
5399 view.end_selection(cx);
5400 });
5401
5402 assert_eq!(
5403 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5404 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
5405 );
5406 }
5407
5408 #[gpui::test]
5409 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
5410 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
5411 let settings = EditorSettings::test(cx);
5412 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5413
5414 view.update(cx, |view, cx| {
5415 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
5416 assert_eq!(
5417 view.selected_display_ranges(cx),
5418 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
5419 );
5420 });
5421
5422 view.update(cx, |view, cx| {
5423 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
5424 assert_eq!(
5425 view.selected_display_ranges(cx),
5426 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
5427 );
5428 });
5429
5430 view.update(cx, |view, cx| {
5431 view.cancel(&Cancel, cx);
5432 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
5433 assert_eq!(
5434 view.selected_display_ranges(cx),
5435 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
5436 );
5437 });
5438 }
5439
5440 #[gpui::test]
5441 fn test_navigation_history(cx: &mut gpui::MutableAppContext) {
5442 cx.add_window(Default::default(), |cx| {
5443 use workspace::ItemView;
5444 let nav_history = Rc::new(RefCell::new(workspace::NavHistory::default()));
5445 let settings = EditorSettings::test(&cx);
5446 let buffer = MultiBuffer::build_simple(&sample_text(30, 5, 'a'), cx);
5447 let mut editor = build_editor(buffer.clone(), settings, cx);
5448 editor.nav_history = Some(ItemNavHistory::new(nav_history.clone(), &cx.handle()));
5449
5450 // Move the cursor a small distance.
5451 // Nothing is added to the navigation history.
5452 editor.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
5453 editor.select_display_ranges(&[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)], cx);
5454 assert!(nav_history.borrow_mut().pop_backward().is_none());
5455
5456 // Move the cursor a large distance.
5457 // The history can jump back to the previous position.
5458 editor.select_display_ranges(&[DisplayPoint::new(13, 0)..DisplayPoint::new(13, 3)], cx);
5459 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
5460 editor.navigate(nav_entry.data.unwrap(), cx);
5461 assert_eq!(nav_entry.item_view.id(), cx.view_id());
5462 assert_eq!(
5463 editor.selected_display_ranges(cx),
5464 &[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)]
5465 );
5466
5467 // Move the cursor a small distance via the mouse.
5468 // Nothing is added to the navigation history.
5469 editor.begin_selection(DisplayPoint::new(5, 0), false, 1, cx);
5470 editor.end_selection(cx);
5471 assert_eq!(
5472 editor.selected_display_ranges(cx),
5473 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
5474 );
5475 assert!(nav_history.borrow_mut().pop_backward().is_none());
5476
5477 // Move the cursor a large distance via the mouse.
5478 // The history can jump back to the previous position.
5479 editor.begin_selection(DisplayPoint::new(15, 0), false, 1, cx);
5480 editor.end_selection(cx);
5481 assert_eq!(
5482 editor.selected_display_ranges(cx),
5483 &[DisplayPoint::new(15, 0)..DisplayPoint::new(15, 0)]
5484 );
5485 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
5486 editor.navigate(nav_entry.data.unwrap(), cx);
5487 assert_eq!(nav_entry.item_view.id(), cx.view_id());
5488 assert_eq!(
5489 editor.selected_display_ranges(cx),
5490 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
5491 );
5492
5493 editor
5494 });
5495 }
5496
5497 #[gpui::test]
5498 fn test_cancel(cx: &mut gpui::MutableAppContext) {
5499 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
5500 let settings = EditorSettings::test(cx);
5501 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5502
5503 view.update(cx, |view, cx| {
5504 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
5505 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
5506 view.end_selection(cx);
5507
5508 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
5509 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
5510 view.end_selection(cx);
5511 assert_eq!(
5512 view.selected_display_ranges(cx),
5513 [
5514 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5515 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
5516 ]
5517 );
5518 });
5519
5520 view.update(cx, |view, cx| {
5521 view.cancel(&Cancel, cx);
5522 assert_eq!(
5523 view.selected_display_ranges(cx),
5524 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
5525 );
5526 });
5527
5528 view.update(cx, |view, cx| {
5529 view.cancel(&Cancel, cx);
5530 assert_eq!(
5531 view.selected_display_ranges(cx),
5532 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
5533 );
5534 });
5535 }
5536
5537 #[gpui::test]
5538 fn test_fold(cx: &mut gpui::MutableAppContext) {
5539 let buffer = MultiBuffer::build_simple(
5540 &"
5541 impl Foo {
5542 // Hello!
5543
5544 fn a() {
5545 1
5546 }
5547
5548 fn b() {
5549 2
5550 }
5551
5552 fn c() {
5553 3
5554 }
5555 }
5556 "
5557 .unindent(),
5558 cx,
5559 );
5560 let settings = EditorSettings::test(&cx);
5561 let (_, view) = cx.add_window(Default::default(), |cx| {
5562 build_editor(buffer.clone(), settings, cx)
5563 });
5564
5565 view.update(cx, |view, cx| {
5566 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx);
5567 view.fold(&Fold, cx);
5568 assert_eq!(
5569 view.display_text(cx),
5570 "
5571 impl Foo {
5572 // Hello!
5573
5574 fn a() {
5575 1
5576 }
5577
5578 fn b() {…
5579 }
5580
5581 fn c() {…
5582 }
5583 }
5584 "
5585 .unindent(),
5586 );
5587
5588 view.fold(&Fold, cx);
5589 assert_eq!(
5590 view.display_text(cx),
5591 "
5592 impl Foo {…
5593 }
5594 "
5595 .unindent(),
5596 );
5597
5598 view.unfold(&Unfold, cx);
5599 assert_eq!(
5600 view.display_text(cx),
5601 "
5602 impl Foo {
5603 // Hello!
5604
5605 fn a() {
5606 1
5607 }
5608
5609 fn b() {…
5610 }
5611
5612 fn c() {…
5613 }
5614 }
5615 "
5616 .unindent(),
5617 );
5618
5619 view.unfold(&Unfold, cx);
5620 assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text());
5621 });
5622 }
5623
5624 #[gpui::test]
5625 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
5626 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
5627 let settings = EditorSettings::test(&cx);
5628 let (_, view) = cx.add_window(Default::default(), |cx| {
5629 build_editor(buffer.clone(), settings, cx)
5630 });
5631
5632 buffer.update(cx, |buffer, cx| {
5633 buffer.edit(
5634 vec![
5635 Point::new(1, 0)..Point::new(1, 0),
5636 Point::new(1, 1)..Point::new(1, 1),
5637 ],
5638 "\t",
5639 cx,
5640 );
5641 });
5642
5643 view.update(cx, |view, cx| {
5644 assert_eq!(
5645 view.selected_display_ranges(cx),
5646 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
5647 );
5648
5649 view.move_down(&MoveDown, cx);
5650 assert_eq!(
5651 view.selected_display_ranges(cx),
5652 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
5653 );
5654
5655 view.move_right(&MoveRight, cx);
5656 assert_eq!(
5657 view.selected_display_ranges(cx),
5658 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
5659 );
5660
5661 view.move_left(&MoveLeft, cx);
5662 assert_eq!(
5663 view.selected_display_ranges(cx),
5664 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
5665 );
5666
5667 view.move_up(&MoveUp, cx);
5668 assert_eq!(
5669 view.selected_display_ranges(cx),
5670 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
5671 );
5672
5673 view.move_to_end(&MoveToEnd, cx);
5674 assert_eq!(
5675 view.selected_display_ranges(cx),
5676 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
5677 );
5678
5679 view.move_to_beginning(&MoveToBeginning, cx);
5680 assert_eq!(
5681 view.selected_display_ranges(cx),
5682 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
5683 );
5684
5685 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx);
5686 view.select_to_beginning(&SelectToBeginning, cx);
5687 assert_eq!(
5688 view.selected_display_ranges(cx),
5689 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
5690 );
5691
5692 view.select_to_end(&SelectToEnd, cx);
5693 assert_eq!(
5694 view.selected_display_ranges(cx),
5695 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
5696 );
5697 });
5698 }
5699
5700 #[gpui::test]
5701 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
5702 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
5703 let settings = EditorSettings::test(&cx);
5704 let (_, view) = cx.add_window(Default::default(), |cx| {
5705 build_editor(buffer.clone(), settings, cx)
5706 });
5707
5708 assert_eq!('ⓐ'.len_utf8(), 3);
5709 assert_eq!('α'.len_utf8(), 2);
5710
5711 view.update(cx, |view, cx| {
5712 view.fold_ranges(
5713 vec![
5714 Point::new(0, 6)..Point::new(0, 12),
5715 Point::new(1, 2)..Point::new(1, 4),
5716 Point::new(2, 4)..Point::new(2, 8),
5717 ],
5718 cx,
5719 );
5720 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
5721
5722 view.move_right(&MoveRight, cx);
5723 assert_eq!(
5724 view.selected_display_ranges(cx),
5725 &[empty_range(0, "ⓐ".len())]
5726 );
5727 view.move_right(&MoveRight, cx);
5728 assert_eq!(
5729 view.selected_display_ranges(cx),
5730 &[empty_range(0, "ⓐⓑ".len())]
5731 );
5732 view.move_right(&MoveRight, cx);
5733 assert_eq!(
5734 view.selected_display_ranges(cx),
5735 &[empty_range(0, "ⓐⓑ…".len())]
5736 );
5737
5738 view.move_down(&MoveDown, cx);
5739 assert_eq!(
5740 view.selected_display_ranges(cx),
5741 &[empty_range(1, "ab…".len())]
5742 );
5743 view.move_left(&MoveLeft, cx);
5744 assert_eq!(
5745 view.selected_display_ranges(cx),
5746 &[empty_range(1, "ab".len())]
5747 );
5748 view.move_left(&MoveLeft, cx);
5749 assert_eq!(
5750 view.selected_display_ranges(cx),
5751 &[empty_range(1, "a".len())]
5752 );
5753
5754 view.move_down(&MoveDown, cx);
5755 assert_eq!(
5756 view.selected_display_ranges(cx),
5757 &[empty_range(2, "α".len())]
5758 );
5759 view.move_right(&MoveRight, cx);
5760 assert_eq!(
5761 view.selected_display_ranges(cx),
5762 &[empty_range(2, "αβ".len())]
5763 );
5764 view.move_right(&MoveRight, cx);
5765 assert_eq!(
5766 view.selected_display_ranges(cx),
5767 &[empty_range(2, "αβ…".len())]
5768 );
5769 view.move_right(&MoveRight, cx);
5770 assert_eq!(
5771 view.selected_display_ranges(cx),
5772 &[empty_range(2, "αβ…ε".len())]
5773 );
5774
5775 view.move_up(&MoveUp, cx);
5776 assert_eq!(
5777 view.selected_display_ranges(cx),
5778 &[empty_range(1, "ab…e".len())]
5779 );
5780 view.move_up(&MoveUp, cx);
5781 assert_eq!(
5782 view.selected_display_ranges(cx),
5783 &[empty_range(0, "ⓐⓑ…ⓔ".len())]
5784 );
5785 view.move_left(&MoveLeft, cx);
5786 assert_eq!(
5787 view.selected_display_ranges(cx),
5788 &[empty_range(0, "ⓐⓑ…".len())]
5789 );
5790 view.move_left(&MoveLeft, cx);
5791 assert_eq!(
5792 view.selected_display_ranges(cx),
5793 &[empty_range(0, "ⓐⓑ".len())]
5794 );
5795 view.move_left(&MoveLeft, cx);
5796 assert_eq!(
5797 view.selected_display_ranges(cx),
5798 &[empty_range(0, "ⓐ".len())]
5799 );
5800 });
5801 }
5802
5803 #[gpui::test]
5804 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
5805 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
5806 let settings = EditorSettings::test(&cx);
5807 let (_, view) = cx.add_window(Default::default(), |cx| {
5808 build_editor(buffer.clone(), settings, cx)
5809 });
5810 view.update(cx, |view, cx| {
5811 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx);
5812 view.move_down(&MoveDown, cx);
5813 assert_eq!(
5814 view.selected_display_ranges(cx),
5815 &[empty_range(1, "abcd".len())]
5816 );
5817
5818 view.move_down(&MoveDown, cx);
5819 assert_eq!(
5820 view.selected_display_ranges(cx),
5821 &[empty_range(2, "αβγ".len())]
5822 );
5823
5824 view.move_down(&MoveDown, cx);
5825 assert_eq!(
5826 view.selected_display_ranges(cx),
5827 &[empty_range(3, "abcd".len())]
5828 );
5829
5830 view.move_down(&MoveDown, cx);
5831 assert_eq!(
5832 view.selected_display_ranges(cx),
5833 &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
5834 );
5835
5836 view.move_up(&MoveUp, cx);
5837 assert_eq!(
5838 view.selected_display_ranges(cx),
5839 &[empty_range(3, "abcd".len())]
5840 );
5841
5842 view.move_up(&MoveUp, cx);
5843 assert_eq!(
5844 view.selected_display_ranges(cx),
5845 &[empty_range(2, "αβγ".len())]
5846 );
5847 });
5848 }
5849
5850 #[gpui::test]
5851 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
5852 let buffer = MultiBuffer::build_simple("abc\n def", cx);
5853 let settings = EditorSettings::test(&cx);
5854 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5855 view.update(cx, |view, cx| {
5856 view.select_display_ranges(
5857 &[
5858 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5859 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
5860 ],
5861 cx,
5862 );
5863 });
5864
5865 view.update(cx, |view, cx| {
5866 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
5867 assert_eq!(
5868 view.selected_display_ranges(cx),
5869 &[
5870 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5871 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5872 ]
5873 );
5874 });
5875
5876 view.update(cx, |view, cx| {
5877 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
5878 assert_eq!(
5879 view.selected_display_ranges(cx),
5880 &[
5881 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5882 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5883 ]
5884 );
5885 });
5886
5887 view.update(cx, |view, cx| {
5888 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
5889 assert_eq!(
5890 view.selected_display_ranges(cx),
5891 &[
5892 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5893 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5894 ]
5895 );
5896 });
5897
5898 view.update(cx, |view, cx| {
5899 view.move_to_end_of_line(&MoveToEndOfLine, cx);
5900 assert_eq!(
5901 view.selected_display_ranges(cx),
5902 &[
5903 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5904 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
5905 ]
5906 );
5907 });
5908
5909 // Moving to the end of line again is a no-op.
5910 view.update(cx, |view, cx| {
5911 view.move_to_end_of_line(&MoveToEndOfLine, cx);
5912 assert_eq!(
5913 view.selected_display_ranges(cx),
5914 &[
5915 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5916 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
5917 ]
5918 );
5919 });
5920
5921 view.update(cx, |view, cx| {
5922 view.move_left(&MoveLeft, cx);
5923 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
5924 assert_eq!(
5925 view.selected_display_ranges(cx),
5926 &[
5927 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
5928 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
5929 ]
5930 );
5931 });
5932
5933 view.update(cx, |view, cx| {
5934 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
5935 assert_eq!(
5936 view.selected_display_ranges(cx),
5937 &[
5938 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
5939 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
5940 ]
5941 );
5942 });
5943
5944 view.update(cx, |view, cx| {
5945 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
5946 assert_eq!(
5947 view.selected_display_ranges(cx),
5948 &[
5949 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
5950 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
5951 ]
5952 );
5953 });
5954
5955 view.update(cx, |view, cx| {
5956 view.select_to_end_of_line(&SelectToEndOfLine(true), cx);
5957 assert_eq!(
5958 view.selected_display_ranges(cx),
5959 &[
5960 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
5961 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
5962 ]
5963 );
5964 });
5965
5966 view.update(cx, |view, cx| {
5967 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
5968 assert_eq!(view.display_text(cx), "ab\n de");
5969 assert_eq!(
5970 view.selected_display_ranges(cx),
5971 &[
5972 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5973 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
5974 ]
5975 );
5976 });
5977
5978 view.update(cx, |view, cx| {
5979 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
5980 assert_eq!(view.display_text(cx), "\n");
5981 assert_eq!(
5982 view.selected_display_ranges(cx),
5983 &[
5984 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5985 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5986 ]
5987 );
5988 });
5989 }
5990
5991 #[gpui::test]
5992 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
5993 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
5994 let settings = EditorSettings::test(&cx);
5995 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5996 view.update(cx, |view, cx| {
5997 view.select_display_ranges(
5998 &[
5999 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
6000 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
6001 ],
6002 cx,
6003 );
6004 });
6005
6006 view.update(cx, |view, cx| {
6007 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6008 assert_eq!(
6009 view.selected_display_ranges(cx),
6010 &[
6011 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
6012 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
6013 ]
6014 );
6015 });
6016
6017 view.update(cx, |view, cx| {
6018 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6019 assert_eq!(
6020 view.selected_display_ranges(cx),
6021 &[
6022 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
6023 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2),
6024 ]
6025 );
6026 });
6027
6028 view.update(cx, |view, cx| {
6029 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6030 assert_eq!(
6031 view.selected_display_ranges(cx),
6032 &[
6033 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
6034 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
6035 ]
6036 );
6037 });
6038
6039 view.update(cx, |view, cx| {
6040 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6041 assert_eq!(
6042 view.selected_display_ranges(cx),
6043 &[
6044 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6045 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6046 ]
6047 );
6048 });
6049
6050 view.update(cx, |view, cx| {
6051 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6052 assert_eq!(
6053 view.selected_display_ranges(cx),
6054 &[
6055 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6056 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 23),
6057 ]
6058 );
6059 });
6060
6061 view.update(cx, |view, cx| {
6062 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6063 assert_eq!(
6064 view.selected_display_ranges(cx),
6065 &[
6066 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6067 DisplayPoint::new(0, 24)..DisplayPoint::new(0, 24),
6068 ]
6069 );
6070 });
6071
6072 view.update(cx, |view, cx| {
6073 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6074 assert_eq!(
6075 view.selected_display_ranges(cx),
6076 &[
6077 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
6078 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6079 ]
6080 );
6081 });
6082
6083 view.update(cx, |view, cx| {
6084 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6085 assert_eq!(
6086 view.selected_display_ranges(cx),
6087 &[
6088 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
6089 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
6090 ]
6091 );
6092 });
6093
6094 view.update(cx, |view, cx| {
6095 view.move_right(&MoveRight, cx);
6096 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
6097 assert_eq!(
6098 view.selected_display_ranges(cx),
6099 &[
6100 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
6101 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
6102 ]
6103 );
6104 });
6105
6106 view.update(cx, |view, cx| {
6107 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
6108 assert_eq!(
6109 view.selected_display_ranges(cx),
6110 &[
6111 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 7),
6112 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 2),
6113 ]
6114 );
6115 });
6116
6117 view.update(cx, |view, cx| {
6118 view.select_to_next_word_boundary(&SelectToNextWordBoundary, cx);
6119 assert_eq!(
6120 view.selected_display_ranges(cx),
6121 &[
6122 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
6123 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
6124 ]
6125 );
6126 });
6127 }
6128
6129 #[gpui::test]
6130 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
6131 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
6132 let settings = EditorSettings::test(&cx);
6133 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6134
6135 view.update(cx, |view, cx| {
6136 view.set_wrap_width(Some(140.), cx);
6137 assert_eq!(
6138 view.display_text(cx),
6139 "use one::{\n two::three::\n four::five\n};"
6140 );
6141
6142 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx);
6143
6144 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6145 assert_eq!(
6146 view.selected_display_ranges(cx),
6147 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
6148 );
6149
6150 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6151 assert_eq!(
6152 view.selected_display_ranges(cx),
6153 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
6154 );
6155
6156 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6157 assert_eq!(
6158 view.selected_display_ranges(cx),
6159 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
6160 );
6161
6162 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6163 assert_eq!(
6164 view.selected_display_ranges(cx),
6165 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
6166 );
6167
6168 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6169 assert_eq!(
6170 view.selected_display_ranges(cx),
6171 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
6172 );
6173
6174 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6175 assert_eq!(
6176 view.selected_display_ranges(cx),
6177 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
6178 );
6179 });
6180 }
6181
6182 #[gpui::test]
6183 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
6184 let buffer = MultiBuffer::build_simple("one two three four", cx);
6185 let settings = EditorSettings::test(&cx);
6186 let (_, view) = cx.add_window(Default::default(), |cx| {
6187 build_editor(buffer.clone(), settings, cx)
6188 });
6189
6190 view.update(cx, |view, cx| {
6191 view.select_display_ranges(
6192 &[
6193 // an empty selection - the preceding word fragment is deleted
6194 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6195 // characters selected - they are deleted
6196 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
6197 ],
6198 cx,
6199 );
6200 view.delete_to_previous_word_boundary(&DeleteToPreviousWordBoundary, cx);
6201 });
6202
6203 assert_eq!(buffer.read(cx).read(cx).text(), "e two te four");
6204
6205 view.update(cx, |view, cx| {
6206 view.select_display_ranges(
6207 &[
6208 // an empty selection - the following word fragment is deleted
6209 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6210 // characters selected - they are deleted
6211 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
6212 ],
6213 cx,
6214 );
6215 view.delete_to_next_word_boundary(&DeleteToNextWordBoundary, cx);
6216 });
6217
6218 assert_eq!(buffer.read(cx).read(cx).text(), "e t te our");
6219 }
6220
6221 #[gpui::test]
6222 fn test_newline(cx: &mut gpui::MutableAppContext) {
6223 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
6224 let settings = EditorSettings::test(&cx);
6225 let (_, view) = cx.add_window(Default::default(), |cx| {
6226 build_editor(buffer.clone(), settings, cx)
6227 });
6228
6229 view.update(cx, |view, cx| {
6230 view.select_display_ranges(
6231 &[
6232 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6233 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6234 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
6235 ],
6236 cx,
6237 );
6238
6239 view.newline(&Newline, cx);
6240 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
6241 });
6242 }
6243
6244 #[gpui::test]
6245 fn test_newline_with_old_selections(cx: &mut gpui::MutableAppContext) {
6246 let buffer = MultiBuffer::build_simple(
6247 "
6248 a
6249 b(
6250 X
6251 )
6252 c(
6253 X
6254 )
6255 "
6256 .unindent()
6257 .as_str(),
6258 cx,
6259 );
6260
6261 let settings = EditorSettings::test(&cx);
6262 let (_, editor) = cx.add_window(Default::default(), |cx| {
6263 let mut editor = build_editor(buffer.clone(), settings, cx);
6264 editor.select_ranges(
6265 [
6266 Point::new(2, 4)..Point::new(2, 5),
6267 Point::new(5, 4)..Point::new(5, 5),
6268 ],
6269 None,
6270 cx,
6271 );
6272 editor
6273 });
6274
6275 // Edit the buffer directly, deleting ranges surrounding the editor's selections
6276 buffer.update(cx, |buffer, cx| {
6277 buffer.edit(
6278 [
6279 Point::new(1, 2)..Point::new(3, 0),
6280 Point::new(4, 2)..Point::new(6, 0),
6281 ],
6282 "",
6283 cx,
6284 );
6285 assert_eq!(
6286 buffer.read(cx).text(),
6287 "
6288 a
6289 b()
6290 c()
6291 "
6292 .unindent()
6293 );
6294 });
6295
6296 editor.update(cx, |editor, cx| {
6297 assert_eq!(
6298 editor.selected_ranges(cx),
6299 &[
6300 Point::new(1, 2)..Point::new(1, 2),
6301 Point::new(2, 2)..Point::new(2, 2),
6302 ],
6303 );
6304
6305 editor.newline(&Newline, cx);
6306 assert_eq!(
6307 editor.text(cx),
6308 "
6309 a
6310 b(
6311 )
6312 c(
6313 )
6314 "
6315 .unindent()
6316 );
6317
6318 // The selections are moved after the inserted newlines
6319 assert_eq!(
6320 editor.selected_ranges(cx),
6321 &[
6322 Point::new(2, 0)..Point::new(2, 0),
6323 Point::new(4, 0)..Point::new(4, 0),
6324 ],
6325 );
6326 });
6327 }
6328
6329 #[gpui::test]
6330 fn test_insert_with_old_selections(cx: &mut gpui::MutableAppContext) {
6331 let buffer = MultiBuffer::build_simple("a( X ), b( Y ), c( Z )", cx);
6332
6333 let settings = EditorSettings::test(&cx);
6334 let (_, editor) = cx.add_window(Default::default(), |cx| {
6335 let mut editor = build_editor(buffer.clone(), settings, cx);
6336 editor.select_ranges([3..4, 11..12, 19..20], None, cx);
6337 editor
6338 });
6339
6340 // Edit the buffer directly, deleting ranges surrounding the editor's selections
6341 buffer.update(cx, |buffer, cx| {
6342 buffer.edit([2..5, 10..13, 18..21], "", cx);
6343 assert_eq!(buffer.read(cx).text(), "a(), b(), c()".unindent());
6344 });
6345
6346 editor.update(cx, |editor, cx| {
6347 assert_eq!(editor.selected_ranges(cx), &[2..2, 7..7, 12..12],);
6348
6349 editor.insert("Z", cx);
6350 assert_eq!(editor.text(cx), "a(Z), b(Z), c(Z)");
6351
6352 // The selections are moved after the inserted characters
6353 assert_eq!(editor.selected_ranges(cx), &[3..3, 9..9, 15..15],);
6354 });
6355 }
6356
6357 #[gpui::test]
6358 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
6359 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
6360 let settings = EditorSettings::test(&cx);
6361 let (_, view) = cx.add_window(Default::default(), |cx| {
6362 build_editor(buffer.clone(), settings, cx)
6363 });
6364
6365 view.update(cx, |view, cx| {
6366 // two selections on the same line
6367 view.select_display_ranges(
6368 &[
6369 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
6370 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
6371 ],
6372 cx,
6373 );
6374
6375 // indent from mid-tabstop to full tabstop
6376 view.tab(&Tab, cx);
6377 assert_eq!(view.text(cx), " one two\nthree\n four");
6378 assert_eq!(
6379 view.selected_display_ranges(cx),
6380 &[
6381 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
6382 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
6383 ]
6384 );
6385
6386 // outdent from 1 tabstop to 0 tabstops
6387 view.outdent(&Outdent, cx);
6388 assert_eq!(view.text(cx), "one two\nthree\n four");
6389 assert_eq!(
6390 view.selected_display_ranges(cx),
6391 &[
6392 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
6393 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
6394 ]
6395 );
6396
6397 // select across line ending
6398 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx);
6399
6400 // indent and outdent affect only the preceding line
6401 view.tab(&Tab, cx);
6402 assert_eq!(view.text(cx), "one two\n three\n four");
6403 assert_eq!(
6404 view.selected_display_ranges(cx),
6405 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
6406 );
6407 view.outdent(&Outdent, cx);
6408 assert_eq!(view.text(cx), "one two\nthree\n four");
6409 assert_eq!(
6410 view.selected_display_ranges(cx),
6411 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
6412 );
6413
6414 // Ensure that indenting/outdenting works when the cursor is at column 0.
6415 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
6416 view.tab(&Tab, cx);
6417 assert_eq!(view.text(cx), "one two\n three\n four");
6418 assert_eq!(
6419 view.selected_display_ranges(cx),
6420 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
6421 );
6422
6423 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
6424 view.outdent(&Outdent, cx);
6425 assert_eq!(view.text(cx), "one two\nthree\n four");
6426 assert_eq!(
6427 view.selected_display_ranges(cx),
6428 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6429 );
6430 });
6431 }
6432
6433 #[gpui::test]
6434 fn test_backspace(cx: &mut gpui::MutableAppContext) {
6435 let buffer =
6436 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
6437 let settings = EditorSettings::test(&cx);
6438 let (_, view) = cx.add_window(Default::default(), |cx| {
6439 build_editor(buffer.clone(), settings, cx)
6440 });
6441
6442 view.update(cx, |view, cx| {
6443 view.select_display_ranges(
6444 &[
6445 // an empty selection - the preceding character is deleted
6446 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6447 // one character selected - it is deleted
6448 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
6449 // a line suffix selected - it is deleted
6450 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
6451 ],
6452 cx,
6453 );
6454 view.backspace(&Backspace, cx);
6455 });
6456
6457 assert_eq!(
6458 buffer.read(cx).read(cx).text(),
6459 "oe two three\nfou five six\nseven ten\n"
6460 );
6461 }
6462
6463 #[gpui::test]
6464 fn test_delete(cx: &mut gpui::MutableAppContext) {
6465 let buffer =
6466 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
6467 let settings = EditorSettings::test(&cx);
6468 let (_, view) = cx.add_window(Default::default(), |cx| {
6469 build_editor(buffer.clone(), settings, cx)
6470 });
6471
6472 view.update(cx, |view, cx| {
6473 view.select_display_ranges(
6474 &[
6475 // an empty selection - the following character is deleted
6476 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6477 // one character selected - it is deleted
6478 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
6479 // a line suffix selected - it is deleted
6480 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
6481 ],
6482 cx,
6483 );
6484 view.delete(&Delete, cx);
6485 });
6486
6487 assert_eq!(
6488 buffer.read(cx).read(cx).text(),
6489 "on two three\nfou five six\nseven ten\n"
6490 );
6491 }
6492
6493 #[gpui::test]
6494 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
6495 let settings = EditorSettings::test(&cx);
6496 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
6497 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6498 view.update(cx, |view, cx| {
6499 view.select_display_ranges(
6500 &[
6501 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6502 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
6503 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6504 ],
6505 cx,
6506 );
6507 view.delete_line(&DeleteLine, cx);
6508 assert_eq!(view.display_text(cx), "ghi");
6509 assert_eq!(
6510 view.selected_display_ranges(cx),
6511 vec![
6512 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6513 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
6514 ]
6515 );
6516 });
6517
6518 let settings = EditorSettings::test(&cx);
6519 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
6520 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6521 view.update(cx, |view, cx| {
6522 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx);
6523 view.delete_line(&DeleteLine, cx);
6524 assert_eq!(view.display_text(cx), "ghi\n");
6525 assert_eq!(
6526 view.selected_display_ranges(cx),
6527 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
6528 );
6529 });
6530 }
6531
6532 #[gpui::test]
6533 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
6534 let settings = EditorSettings::test(&cx);
6535 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
6536 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6537 view.update(cx, |view, cx| {
6538 view.select_display_ranges(
6539 &[
6540 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
6541 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6542 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6543 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6544 ],
6545 cx,
6546 );
6547 view.duplicate_line(&DuplicateLine, cx);
6548 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
6549 assert_eq!(
6550 view.selected_display_ranges(cx),
6551 vec![
6552 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
6553 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6554 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6555 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
6556 ]
6557 );
6558 });
6559
6560 let settings = EditorSettings::test(&cx);
6561 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
6562 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6563 view.update(cx, |view, cx| {
6564 view.select_display_ranges(
6565 &[
6566 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
6567 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
6568 ],
6569 cx,
6570 );
6571 view.duplicate_line(&DuplicateLine, cx);
6572 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
6573 assert_eq!(
6574 view.selected_display_ranges(cx),
6575 vec![
6576 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
6577 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
6578 ]
6579 );
6580 });
6581 }
6582
6583 #[gpui::test]
6584 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
6585 let settings = EditorSettings::test(&cx);
6586 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
6587 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6588 view.update(cx, |view, cx| {
6589 view.fold_ranges(
6590 vec![
6591 Point::new(0, 2)..Point::new(1, 2),
6592 Point::new(2, 3)..Point::new(4, 1),
6593 Point::new(7, 0)..Point::new(8, 4),
6594 ],
6595 cx,
6596 );
6597 view.select_display_ranges(
6598 &[
6599 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6600 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
6601 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
6602 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
6603 ],
6604 cx,
6605 );
6606 assert_eq!(
6607 view.display_text(cx),
6608 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
6609 );
6610
6611 view.move_line_up(&MoveLineUp, cx);
6612 assert_eq!(
6613 view.display_text(cx),
6614 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
6615 );
6616 assert_eq!(
6617 view.selected_display_ranges(cx),
6618 vec![
6619 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6620 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6621 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
6622 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
6623 ]
6624 );
6625 });
6626
6627 view.update(cx, |view, cx| {
6628 view.move_line_down(&MoveLineDown, cx);
6629 assert_eq!(
6630 view.display_text(cx),
6631 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
6632 );
6633 assert_eq!(
6634 view.selected_display_ranges(cx),
6635 vec![
6636 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6637 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
6638 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
6639 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
6640 ]
6641 );
6642 });
6643
6644 view.update(cx, |view, cx| {
6645 view.move_line_down(&MoveLineDown, cx);
6646 assert_eq!(
6647 view.display_text(cx),
6648 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
6649 );
6650 assert_eq!(
6651 view.selected_display_ranges(cx),
6652 vec![
6653 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6654 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
6655 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
6656 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
6657 ]
6658 );
6659 });
6660
6661 view.update(cx, |view, cx| {
6662 view.move_line_up(&MoveLineUp, cx);
6663 assert_eq!(
6664 view.display_text(cx),
6665 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
6666 );
6667 assert_eq!(
6668 view.selected_display_ranges(cx),
6669 vec![
6670 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6671 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6672 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
6673 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
6674 ]
6675 );
6676 });
6677 }
6678
6679 #[gpui::test]
6680 fn test_move_line_up_down_with_blocks(cx: &mut gpui::MutableAppContext) {
6681 let settings = EditorSettings::test(&cx);
6682 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
6683 let snapshot = buffer.read(cx).snapshot(cx);
6684 let (_, editor) =
6685 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6686 editor.update(cx, |editor, cx| {
6687 editor.insert_blocks(
6688 [BlockProperties {
6689 position: snapshot.anchor_after(Point::new(2, 0)),
6690 disposition: BlockDisposition::Below,
6691 height: 1,
6692 render: Arc::new(|_| Empty::new().boxed()),
6693 }],
6694 cx,
6695 );
6696 editor.select_ranges([Point::new(2, 0)..Point::new(2, 0)], None, cx);
6697 editor.move_line_down(&MoveLineDown, cx);
6698 });
6699 }
6700
6701 #[gpui::test]
6702 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
6703 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
6704 let settings = EditorSettings::test(&cx);
6705 let view = cx
6706 .add_window(Default::default(), |cx| {
6707 build_editor(buffer.clone(), settings, cx)
6708 })
6709 .1;
6710
6711 // Cut with three selections. Clipboard text is divided into three slices.
6712 view.update(cx, |view, cx| {
6713 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
6714 view.cut(&Cut, cx);
6715 assert_eq!(view.display_text(cx), "two four six ");
6716 });
6717
6718 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
6719 view.update(cx, |view, cx| {
6720 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
6721 view.paste(&Paste, cx);
6722 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
6723 assert_eq!(
6724 view.selected_display_ranges(cx),
6725 &[
6726 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
6727 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
6728 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
6729 ]
6730 );
6731 });
6732
6733 // Paste again but with only two cursors. Since the number of cursors doesn't
6734 // match the number of slices in the clipboard, the entire clipboard text
6735 // is pasted at each cursor.
6736 view.update(cx, |view, cx| {
6737 view.select_ranges(vec![0..0, 31..31], None, cx);
6738 view.handle_input(&Input("( ".into()), cx);
6739 view.paste(&Paste, cx);
6740 view.handle_input(&Input(") ".into()), cx);
6741 assert_eq!(
6742 view.display_text(cx),
6743 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
6744 );
6745 });
6746
6747 view.update(cx, |view, cx| {
6748 view.select_ranges(vec![0..0], None, cx);
6749 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
6750 assert_eq!(
6751 view.display_text(cx),
6752 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
6753 );
6754 });
6755
6756 // Cut with three selections, one of which is full-line.
6757 view.update(cx, |view, cx| {
6758 view.select_display_ranges(
6759 &[
6760 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
6761 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6762 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
6763 ],
6764 cx,
6765 );
6766 view.cut(&Cut, cx);
6767 assert_eq!(
6768 view.display_text(cx),
6769 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
6770 );
6771 });
6772
6773 // Paste with three selections, noticing how the copied selection that was full-line
6774 // gets inserted before the second cursor.
6775 view.update(cx, |view, cx| {
6776 view.select_display_ranges(
6777 &[
6778 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6779 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6780 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
6781 ],
6782 cx,
6783 );
6784 view.paste(&Paste, cx);
6785 assert_eq!(
6786 view.display_text(cx),
6787 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
6788 );
6789 assert_eq!(
6790 view.selected_display_ranges(cx),
6791 &[
6792 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6793 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6794 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
6795 ]
6796 );
6797 });
6798
6799 // Copy with a single cursor only, which writes the whole line into the clipboard.
6800 view.update(cx, |view, cx| {
6801 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx);
6802 view.copy(&Copy, cx);
6803 });
6804
6805 // Paste with three selections, noticing how the copied full-line selection is inserted
6806 // before the empty selections but replaces the selection that is non-empty.
6807 view.update(cx, |view, cx| {
6808 view.select_display_ranges(
6809 &[
6810 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6811 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
6812 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6813 ],
6814 cx,
6815 );
6816 view.paste(&Paste, cx);
6817 assert_eq!(
6818 view.display_text(cx),
6819 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
6820 );
6821 assert_eq!(
6822 view.selected_display_ranges(cx),
6823 &[
6824 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6825 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6826 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
6827 ]
6828 );
6829 });
6830 }
6831
6832 #[gpui::test]
6833 fn test_select_all(cx: &mut gpui::MutableAppContext) {
6834 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
6835 let settings = EditorSettings::test(&cx);
6836 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6837 view.update(cx, |view, cx| {
6838 view.select_all(&SelectAll, cx);
6839 assert_eq!(
6840 view.selected_display_ranges(cx),
6841 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
6842 );
6843 });
6844 }
6845
6846 #[gpui::test]
6847 fn test_select_line(cx: &mut gpui::MutableAppContext) {
6848 let settings = EditorSettings::test(&cx);
6849 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
6850 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6851 view.update(cx, |view, cx| {
6852 view.select_display_ranges(
6853 &[
6854 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
6855 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6856 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6857 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
6858 ],
6859 cx,
6860 );
6861 view.select_line(&SelectLine, cx);
6862 assert_eq!(
6863 view.selected_display_ranges(cx),
6864 vec![
6865 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
6866 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
6867 ]
6868 );
6869 });
6870
6871 view.update(cx, |view, cx| {
6872 view.select_line(&SelectLine, cx);
6873 assert_eq!(
6874 view.selected_display_ranges(cx),
6875 vec![
6876 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
6877 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
6878 ]
6879 );
6880 });
6881
6882 view.update(cx, |view, cx| {
6883 view.select_line(&SelectLine, cx);
6884 assert_eq!(
6885 view.selected_display_ranges(cx),
6886 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
6887 );
6888 });
6889 }
6890
6891 #[gpui::test]
6892 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
6893 let settings = EditorSettings::test(&cx);
6894 let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
6895 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6896 view.update(cx, |view, cx| {
6897 view.fold_ranges(
6898 vec![
6899 Point::new(0, 2)..Point::new(1, 2),
6900 Point::new(2, 3)..Point::new(4, 1),
6901 Point::new(7, 0)..Point::new(8, 4),
6902 ],
6903 cx,
6904 );
6905 view.select_display_ranges(
6906 &[
6907 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
6908 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6909 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6910 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
6911 ],
6912 cx,
6913 );
6914 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
6915 });
6916
6917 view.update(cx, |view, cx| {
6918 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
6919 assert_eq!(
6920 view.display_text(cx),
6921 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
6922 );
6923 assert_eq!(
6924 view.selected_display_ranges(cx),
6925 [
6926 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6927 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6928 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
6929 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
6930 ]
6931 );
6932 });
6933
6934 view.update(cx, |view, cx| {
6935 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx);
6936 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
6937 assert_eq!(
6938 view.display_text(cx),
6939 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
6940 );
6941 assert_eq!(
6942 view.selected_display_ranges(cx),
6943 [
6944 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
6945 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6946 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
6947 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
6948 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
6949 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
6950 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
6951 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
6952 ]
6953 );
6954 });
6955 }
6956
6957 #[gpui::test]
6958 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
6959 let settings = EditorSettings::test(&cx);
6960 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
6961 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6962
6963 view.update(cx, |view, cx| {
6964 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx);
6965 });
6966 view.update(cx, |view, cx| {
6967 view.add_selection_above(&AddSelectionAbove, cx);
6968 assert_eq!(
6969 view.selected_display_ranges(cx),
6970 vec![
6971 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6972 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
6973 ]
6974 );
6975 });
6976
6977 view.update(cx, |view, cx| {
6978 view.add_selection_above(&AddSelectionAbove, cx);
6979 assert_eq!(
6980 view.selected_display_ranges(cx),
6981 vec![
6982 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6983 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
6984 ]
6985 );
6986 });
6987
6988 view.update(cx, |view, cx| {
6989 view.add_selection_below(&AddSelectionBelow, cx);
6990 assert_eq!(
6991 view.selected_display_ranges(cx),
6992 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
6993 );
6994 });
6995
6996 view.update(cx, |view, cx| {
6997 view.add_selection_below(&AddSelectionBelow, cx);
6998 assert_eq!(
6999 view.selected_display_ranges(cx),
7000 vec![
7001 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7002 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
7003 ]
7004 );
7005 });
7006
7007 view.update(cx, |view, cx| {
7008 view.add_selection_below(&AddSelectionBelow, cx);
7009 assert_eq!(
7010 view.selected_display_ranges(cx),
7011 vec![
7012 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7013 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
7014 ]
7015 );
7016 });
7017
7018 view.update(cx, |view, cx| {
7019 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx);
7020 });
7021 view.update(cx, |view, cx| {
7022 view.add_selection_below(&AddSelectionBelow, cx);
7023 assert_eq!(
7024 view.selected_display_ranges(cx),
7025 vec![
7026 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7027 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
7028 ]
7029 );
7030 });
7031
7032 view.update(cx, |view, cx| {
7033 view.add_selection_below(&AddSelectionBelow, cx);
7034 assert_eq!(
7035 view.selected_display_ranges(cx),
7036 vec![
7037 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7038 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
7039 ]
7040 );
7041 });
7042
7043 view.update(cx, |view, cx| {
7044 view.add_selection_above(&AddSelectionAbove, cx);
7045 assert_eq!(
7046 view.selected_display_ranges(cx),
7047 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
7048 );
7049 });
7050
7051 view.update(cx, |view, cx| {
7052 view.add_selection_above(&AddSelectionAbove, cx);
7053 assert_eq!(
7054 view.selected_display_ranges(cx),
7055 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
7056 );
7057 });
7058
7059 view.update(cx, |view, cx| {
7060 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx);
7061 view.add_selection_below(&AddSelectionBelow, cx);
7062 assert_eq!(
7063 view.selected_display_ranges(cx),
7064 vec![
7065 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7066 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7067 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7068 ]
7069 );
7070 });
7071
7072 view.update(cx, |view, cx| {
7073 view.add_selection_below(&AddSelectionBelow, cx);
7074 assert_eq!(
7075 view.selected_display_ranges(cx),
7076 vec![
7077 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7078 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7079 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7080 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
7081 ]
7082 );
7083 });
7084
7085 view.update(cx, |view, cx| {
7086 view.add_selection_above(&AddSelectionAbove, cx);
7087 assert_eq!(
7088 view.selected_display_ranges(cx),
7089 vec![
7090 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7091 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7092 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7093 ]
7094 );
7095 });
7096
7097 view.update(cx, |view, cx| {
7098 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx);
7099 });
7100 view.update(cx, |view, cx| {
7101 view.add_selection_above(&AddSelectionAbove, cx);
7102 assert_eq!(
7103 view.selected_display_ranges(cx),
7104 vec![
7105 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
7106 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
7107 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
7108 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
7109 ]
7110 );
7111 });
7112
7113 view.update(cx, |view, cx| {
7114 view.add_selection_below(&AddSelectionBelow, cx);
7115 assert_eq!(
7116 view.selected_display_ranges(cx),
7117 vec![
7118 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
7119 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
7120 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
7121 ]
7122 );
7123 });
7124 }
7125
7126 #[gpui::test]
7127 async fn test_select_larger_smaller_syntax_node(mut cx: gpui::TestAppContext) {
7128 let settings = cx.read(EditorSettings::test);
7129 let language = Arc::new(Language::new(
7130 LanguageConfig::default(),
7131 Some(tree_sitter_rust::language()),
7132 ));
7133
7134 let text = r#"
7135 use mod1::mod2::{mod3, mod4};
7136
7137 fn fn_1(param1: bool, param2: &str) {
7138 let var1 = "text";
7139 }
7140 "#
7141 .unindent();
7142
7143 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7144 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7145 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7146 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
7147 .await;
7148
7149 view.update(&mut cx, |view, cx| {
7150 view.select_display_ranges(
7151 &[
7152 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7153 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7154 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7155 ],
7156 cx,
7157 );
7158 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7159 });
7160 assert_eq!(
7161 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7162 &[
7163 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
7164 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7165 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
7166 ]
7167 );
7168
7169 view.update(&mut cx, |view, cx| {
7170 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7171 });
7172 assert_eq!(
7173 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7174 &[
7175 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
7176 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
7177 ]
7178 );
7179
7180 view.update(&mut cx, |view, cx| {
7181 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7182 });
7183 assert_eq!(
7184 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7185 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
7186 );
7187
7188 // Trying to expand the selected syntax node one more time has no effect.
7189 view.update(&mut cx, |view, cx| {
7190 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7191 });
7192 assert_eq!(
7193 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7194 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
7195 );
7196
7197 view.update(&mut cx, |view, cx| {
7198 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7199 });
7200 assert_eq!(
7201 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7202 &[
7203 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
7204 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
7205 ]
7206 );
7207
7208 view.update(&mut cx, |view, cx| {
7209 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7210 });
7211 assert_eq!(
7212 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7213 &[
7214 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
7215 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7216 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
7217 ]
7218 );
7219
7220 view.update(&mut cx, |view, cx| {
7221 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7222 });
7223 assert_eq!(
7224 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7225 &[
7226 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7227 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7228 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7229 ]
7230 );
7231
7232 // Trying to shrink the selected syntax node one more time has no effect.
7233 view.update(&mut cx, |view, cx| {
7234 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7235 });
7236 assert_eq!(
7237 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7238 &[
7239 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7240 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7241 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7242 ]
7243 );
7244
7245 // Ensure that we keep expanding the selection if the larger selection starts or ends within
7246 // a fold.
7247 view.update(&mut cx, |view, cx| {
7248 view.fold_ranges(
7249 vec![
7250 Point::new(0, 21)..Point::new(0, 24),
7251 Point::new(3, 20)..Point::new(3, 22),
7252 ],
7253 cx,
7254 );
7255 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7256 });
7257 assert_eq!(
7258 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7259 &[
7260 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
7261 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7262 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
7263 ]
7264 );
7265 }
7266
7267 #[gpui::test]
7268 async fn test_autoindent_selections(mut cx: gpui::TestAppContext) {
7269 let settings = cx.read(EditorSettings::test);
7270 let language = Arc::new(
7271 Language::new(
7272 LanguageConfig {
7273 brackets: vec![
7274 BracketPair {
7275 start: "{".to_string(),
7276 end: "}".to_string(),
7277 close: false,
7278 newline: true,
7279 },
7280 BracketPair {
7281 start: "(".to_string(),
7282 end: ")".to_string(),
7283 close: false,
7284 newline: true,
7285 },
7286 ],
7287 ..Default::default()
7288 },
7289 Some(tree_sitter_rust::language()),
7290 )
7291 .with_indents_query(
7292 r#"
7293 (_ "(" ")" @end) @indent
7294 (_ "{" "}" @end) @indent
7295 "#,
7296 )
7297 .unwrap(),
7298 );
7299
7300 let text = "fn a() {}";
7301
7302 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7303 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7304 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7305 editor
7306 .condition(&cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
7307 .await;
7308
7309 editor.update(&mut cx, |editor, cx| {
7310 editor.select_ranges([5..5, 8..8, 9..9], None, cx);
7311 editor.newline(&Newline, cx);
7312 assert_eq!(editor.text(cx), "fn a(\n \n) {\n \n}\n");
7313 assert_eq!(
7314 editor.selected_ranges(cx),
7315 &[
7316 Point::new(1, 4)..Point::new(1, 4),
7317 Point::new(3, 4)..Point::new(3, 4),
7318 Point::new(5, 0)..Point::new(5, 0)
7319 ]
7320 );
7321 });
7322 }
7323
7324 #[gpui::test]
7325 async fn test_autoclose_pairs(mut cx: gpui::TestAppContext) {
7326 let settings = cx.read(EditorSettings::test);
7327 let language = Arc::new(Language::new(
7328 LanguageConfig {
7329 brackets: vec![
7330 BracketPair {
7331 start: "{".to_string(),
7332 end: "}".to_string(),
7333 close: true,
7334 newline: true,
7335 },
7336 BracketPair {
7337 start: "/*".to_string(),
7338 end: " */".to_string(),
7339 close: true,
7340 newline: true,
7341 },
7342 ],
7343 ..Default::default()
7344 },
7345 Some(tree_sitter_rust::language()),
7346 ));
7347
7348 let text = r#"
7349 a
7350
7351 /
7352
7353 "#
7354 .unindent();
7355
7356 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7357 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7358 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7359 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
7360 .await;
7361
7362 view.update(&mut cx, |view, cx| {
7363 view.select_display_ranges(
7364 &[
7365 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7366 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7367 ],
7368 cx,
7369 );
7370 view.handle_input(&Input("{".to_string()), cx);
7371 view.handle_input(&Input("{".to_string()), cx);
7372 view.handle_input(&Input("{".to_string()), cx);
7373 assert_eq!(
7374 view.text(cx),
7375 "
7376 {{{}}}
7377 {{{}}}
7378 /
7379
7380 "
7381 .unindent()
7382 );
7383
7384 view.move_right(&MoveRight, cx);
7385 view.handle_input(&Input("}".to_string()), cx);
7386 view.handle_input(&Input("}".to_string()), cx);
7387 view.handle_input(&Input("}".to_string()), cx);
7388 assert_eq!(
7389 view.text(cx),
7390 "
7391 {{{}}}}
7392 {{{}}}}
7393 /
7394
7395 "
7396 .unindent()
7397 );
7398
7399 view.undo(&Undo, cx);
7400 view.handle_input(&Input("/".to_string()), cx);
7401 view.handle_input(&Input("*".to_string()), cx);
7402 assert_eq!(
7403 view.text(cx),
7404 "
7405 /* */
7406 /* */
7407 /
7408
7409 "
7410 .unindent()
7411 );
7412
7413 view.undo(&Undo, cx);
7414 view.select_display_ranges(
7415 &[
7416 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7417 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7418 ],
7419 cx,
7420 );
7421 view.handle_input(&Input("*".to_string()), cx);
7422 assert_eq!(
7423 view.text(cx),
7424 "
7425 a
7426
7427 /*
7428 *
7429 "
7430 .unindent()
7431 );
7432 });
7433 }
7434
7435 #[gpui::test]
7436 async fn test_snippets(mut cx: gpui::TestAppContext) {
7437 let settings = cx.read(EditorSettings::test);
7438
7439 let text = "
7440 a. b
7441 a. b
7442 a. b
7443 "
7444 .unindent();
7445 let buffer = cx.update(|cx| MultiBuffer::build_simple(&text, cx));
7446 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7447
7448 editor.update(&mut cx, |editor, cx| {
7449 let buffer = &editor.snapshot(cx).buffer_snapshot;
7450 let snippet = Snippet::parse("f(${1:one}, ${2:two}, ${1:three})$0").unwrap();
7451 let insertion_ranges = [
7452 Point::new(0, 2).to_offset(buffer)..Point::new(0, 2).to_offset(buffer),
7453 Point::new(1, 2).to_offset(buffer)..Point::new(1, 2).to_offset(buffer),
7454 Point::new(2, 2).to_offset(buffer)..Point::new(2, 2).to_offset(buffer),
7455 ];
7456
7457 editor
7458 .insert_snippet(&insertion_ranges, snippet, cx)
7459 .unwrap();
7460 assert_eq!(
7461 editor.text(cx),
7462 "
7463 a.f(one, two, three) b
7464 a.f(one, two, three) b
7465 a.f(one, two, three) b
7466 "
7467 .unindent()
7468 );
7469 assert_eq!(
7470 editor.selected_ranges::<Point>(cx),
7471 &[
7472 Point::new(0, 4)..Point::new(0, 7),
7473 Point::new(0, 14)..Point::new(0, 19),
7474 Point::new(1, 4)..Point::new(1, 7),
7475 Point::new(1, 14)..Point::new(1, 19),
7476 Point::new(2, 4)..Point::new(2, 7),
7477 Point::new(2, 14)..Point::new(2, 19),
7478 ]
7479 );
7480
7481 // Can't move earlier than the first tab stop
7482 editor.move_to_prev_snippet_tabstop(cx);
7483 assert_eq!(
7484 editor.selected_ranges::<Point>(cx),
7485 &[
7486 Point::new(0, 4)..Point::new(0, 7),
7487 Point::new(0, 14)..Point::new(0, 19),
7488 Point::new(1, 4)..Point::new(1, 7),
7489 Point::new(1, 14)..Point::new(1, 19),
7490 Point::new(2, 4)..Point::new(2, 7),
7491 Point::new(2, 14)..Point::new(2, 19),
7492 ]
7493 );
7494
7495 assert!(editor.move_to_next_snippet_tabstop(cx));
7496 assert_eq!(
7497 editor.selected_ranges::<Point>(cx),
7498 &[
7499 Point::new(0, 9)..Point::new(0, 12),
7500 Point::new(1, 9)..Point::new(1, 12),
7501 Point::new(2, 9)..Point::new(2, 12)
7502 ]
7503 );
7504
7505 editor.move_to_prev_snippet_tabstop(cx);
7506 assert_eq!(
7507 editor.selected_ranges::<Point>(cx),
7508 &[
7509 Point::new(0, 4)..Point::new(0, 7),
7510 Point::new(0, 14)..Point::new(0, 19),
7511 Point::new(1, 4)..Point::new(1, 7),
7512 Point::new(1, 14)..Point::new(1, 19),
7513 Point::new(2, 4)..Point::new(2, 7),
7514 Point::new(2, 14)..Point::new(2, 19),
7515 ]
7516 );
7517
7518 assert!(editor.move_to_next_snippet_tabstop(cx));
7519 assert!(editor.move_to_next_snippet_tabstop(cx));
7520 assert_eq!(
7521 editor.selected_ranges::<Point>(cx),
7522 &[
7523 Point::new(0, 20)..Point::new(0, 20),
7524 Point::new(1, 20)..Point::new(1, 20),
7525 Point::new(2, 20)..Point::new(2, 20)
7526 ]
7527 );
7528
7529 // As soon as the last tab stop is reached, snippet state is gone
7530 editor.move_to_prev_snippet_tabstop(cx);
7531 assert_eq!(
7532 editor.selected_ranges::<Point>(cx),
7533 &[
7534 Point::new(0, 20)..Point::new(0, 20),
7535 Point::new(1, 20)..Point::new(1, 20),
7536 Point::new(2, 20)..Point::new(2, 20)
7537 ]
7538 );
7539 });
7540 }
7541
7542 #[gpui::test]
7543 async fn test_completion(mut cx: gpui::TestAppContext) {
7544 let settings = cx.read(EditorSettings::test);
7545 let (language_server, mut fake) = lsp::LanguageServer::fake_with_capabilities(
7546 lsp::ServerCapabilities {
7547 completion_provider: Some(lsp::CompletionOptions {
7548 trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
7549 ..Default::default()
7550 }),
7551 ..Default::default()
7552 },
7553 &cx,
7554 )
7555 .await;
7556
7557 let text = "
7558 one
7559 two
7560 three
7561 "
7562 .unindent();
7563
7564 let fs = Arc::new(FakeFs::new(cx.background().clone()));
7565 fs.insert_file("/file", text).await.unwrap();
7566
7567 let project = Project::test(fs, &mut cx);
7568
7569 let (worktree, relative_path) = project
7570 .update(&mut cx, |project, cx| {
7571 project.find_or_create_local_worktree("/file", false, cx)
7572 })
7573 .await
7574 .unwrap();
7575 let project_path = ProjectPath {
7576 worktree_id: worktree.read_with(&cx, |worktree, _| worktree.id()),
7577 path: relative_path.into(),
7578 };
7579 let buffer = project
7580 .update(&mut cx, |project, cx| project.open_buffer(project_path, cx))
7581 .await
7582 .unwrap();
7583 buffer.update(&mut cx, |buffer, cx| {
7584 buffer.set_language_server(Some(language_server), cx);
7585 });
7586
7587 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7588 buffer.next_notification(&cx).await;
7589
7590 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7591
7592 editor.update(&mut cx, |editor, cx| {
7593 editor.project = Some(project);
7594 editor.select_ranges([Point::new(0, 3)..Point::new(0, 3)], None, cx);
7595 editor.handle_input(&Input(".".to_string()), cx);
7596 });
7597
7598 handle_completion_request(
7599 &mut fake,
7600 "/file",
7601 Point::new(0, 4),
7602 &[
7603 (Point::new(0, 4)..Point::new(0, 4), "first_completion"),
7604 (Point::new(0, 4)..Point::new(0, 4), "second_completion"),
7605 ],
7606 )
7607 .await;
7608 editor.next_notification(&cx).await;
7609
7610 let apply_additional_edits = editor.update(&mut cx, |editor, cx| {
7611 editor.move_down(&MoveDown, cx);
7612 let apply_additional_edits = editor
7613 .confirm_completion(&ConfirmCompletion(None), cx)
7614 .unwrap();
7615 assert_eq!(
7616 editor.text(cx),
7617 "
7618 one.second_completion
7619 two
7620 three
7621 "
7622 .unindent()
7623 );
7624 apply_additional_edits
7625 });
7626
7627 handle_resolve_completion_request(
7628 &mut fake,
7629 Some((Point::new(2, 5)..Point::new(2, 5), "\nadditional edit")),
7630 )
7631 .await;
7632 apply_additional_edits.await.unwrap();
7633 assert_eq!(
7634 editor.read_with(&cx, |editor, cx| editor.text(cx)),
7635 "
7636 one.second_completion
7637 two
7638 three
7639 additional edit
7640 "
7641 .unindent()
7642 );
7643
7644 editor.update(&mut cx, |editor, cx| {
7645 editor.select_ranges(
7646 [
7647 Point::new(1, 3)..Point::new(1, 3),
7648 Point::new(2, 5)..Point::new(2, 5),
7649 ],
7650 None,
7651 cx,
7652 );
7653
7654 editor.handle_input(&Input(" ".to_string()), cx);
7655 assert!(editor.context_menu.is_none());
7656 editor.handle_input(&Input("s".to_string()), cx);
7657 assert!(editor.context_menu.is_none());
7658 });
7659
7660 handle_completion_request(
7661 &mut fake,
7662 "/file",
7663 Point::new(2, 7),
7664 &[
7665 (Point::new(2, 6)..Point::new(2, 7), "fourth_completion"),
7666 (Point::new(2, 6)..Point::new(2, 7), "fifth_completion"),
7667 (Point::new(2, 6)..Point::new(2, 7), "sixth_completion"),
7668 ],
7669 )
7670 .await;
7671 editor
7672 .condition(&cx, |editor, _| editor.context_menu.is_some())
7673 .await;
7674
7675 editor.update(&mut cx, |editor, cx| {
7676 editor.handle_input(&Input("i".to_string()), cx);
7677 });
7678
7679 handle_completion_request(
7680 &mut fake,
7681 "/file",
7682 Point::new(2, 8),
7683 &[
7684 (Point::new(2, 6)..Point::new(2, 8), "fourth_completion"),
7685 (Point::new(2, 6)..Point::new(2, 8), "fifth_completion"),
7686 (Point::new(2, 6)..Point::new(2, 8), "sixth_completion"),
7687 ],
7688 )
7689 .await;
7690 editor.next_notification(&cx).await;
7691
7692 let apply_additional_edits = editor.update(&mut cx, |editor, cx| {
7693 let apply_additional_edits = editor
7694 .confirm_completion(&ConfirmCompletion(None), cx)
7695 .unwrap();
7696 assert_eq!(
7697 editor.text(cx),
7698 "
7699 one.second_completion
7700 two sixth_completion
7701 three sixth_completion
7702 additional edit
7703 "
7704 .unindent()
7705 );
7706 apply_additional_edits
7707 });
7708 handle_resolve_completion_request(&mut fake, None).await;
7709 apply_additional_edits.await.unwrap();
7710
7711 async fn handle_completion_request(
7712 fake: &mut FakeLanguageServer,
7713 path: &str,
7714 position: Point,
7715 completions: &[(Range<Point>, &str)],
7716 ) {
7717 let (id, params) = fake.receive_request::<lsp::request::Completion>().await;
7718 assert_eq!(
7719 params.text_document_position.text_document.uri,
7720 lsp::Url::from_file_path(path).unwrap()
7721 );
7722 assert_eq!(
7723 params.text_document_position.position,
7724 lsp::Position::new(position.row, position.column)
7725 );
7726
7727 let completions = completions
7728 .iter()
7729 .map(|(range, new_text)| lsp::CompletionItem {
7730 label: new_text.to_string(),
7731 text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
7732 range: lsp::Range::new(
7733 lsp::Position::new(range.start.row, range.start.column),
7734 lsp::Position::new(range.start.row, range.start.column),
7735 ),
7736 new_text: new_text.to_string(),
7737 })),
7738 ..Default::default()
7739 })
7740 .collect();
7741 fake.respond(id, Some(lsp::CompletionResponse::Array(completions)))
7742 .await;
7743 }
7744
7745 async fn handle_resolve_completion_request(
7746 fake: &mut FakeLanguageServer,
7747 edit: Option<(Range<Point>, &str)>,
7748 ) {
7749 let (id, _) = fake
7750 .receive_request::<lsp::request::ResolveCompletionItem>()
7751 .await;
7752 fake.respond(
7753 id,
7754 lsp::CompletionItem {
7755 additional_text_edits: edit.map(|(range, new_text)| {
7756 vec![lsp::TextEdit::new(
7757 lsp::Range::new(
7758 lsp::Position::new(range.start.row, range.start.column),
7759 lsp::Position::new(range.end.row, range.end.column),
7760 ),
7761 new_text.to_string(),
7762 )]
7763 }),
7764 ..Default::default()
7765 },
7766 )
7767 .await;
7768 }
7769 }
7770
7771 #[gpui::test]
7772 async fn test_toggle_comment(mut cx: gpui::TestAppContext) {
7773 let settings = cx.read(EditorSettings::test);
7774 let language = Arc::new(Language::new(
7775 LanguageConfig {
7776 line_comment: Some("// ".to_string()),
7777 ..Default::default()
7778 },
7779 Some(tree_sitter_rust::language()),
7780 ));
7781
7782 let text = "
7783 fn a() {
7784 //b();
7785 // c();
7786 // d();
7787 }
7788 "
7789 .unindent();
7790
7791 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7792 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7793 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7794
7795 view.update(&mut cx, |editor, cx| {
7796 // If multiple selections intersect a line, the line is only
7797 // toggled once.
7798 editor.select_display_ranges(
7799 &[
7800 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
7801 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
7802 ],
7803 cx,
7804 );
7805 editor.toggle_comments(&ToggleComments, cx);
7806 assert_eq!(
7807 editor.text(cx),
7808 "
7809 fn a() {
7810 b();
7811 c();
7812 d();
7813 }
7814 "
7815 .unindent()
7816 );
7817
7818 // The comment prefix is inserted at the same column for every line
7819 // in a selection.
7820 editor.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx);
7821 editor.toggle_comments(&ToggleComments, cx);
7822 assert_eq!(
7823 editor.text(cx),
7824 "
7825 fn a() {
7826 // b();
7827 // c();
7828 // d();
7829 }
7830 "
7831 .unindent()
7832 );
7833
7834 // If a selection ends at the beginning of a line, that line is not toggled.
7835 editor.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx);
7836 editor.toggle_comments(&ToggleComments, cx);
7837 assert_eq!(
7838 editor.text(cx),
7839 "
7840 fn a() {
7841 // b();
7842 c();
7843 // d();
7844 }
7845 "
7846 .unindent()
7847 );
7848 });
7849 }
7850
7851 #[gpui::test]
7852 fn test_editing_disjoint_excerpts(cx: &mut gpui::MutableAppContext) {
7853 let settings = EditorSettings::test(cx);
7854 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
7855 let multibuffer = cx.add_model(|cx| {
7856 let mut multibuffer = MultiBuffer::new(0);
7857 multibuffer.push_excerpt(
7858 ExcerptProperties {
7859 buffer: &buffer,
7860 range: Point::new(0, 0)..Point::new(0, 4),
7861 },
7862 cx,
7863 );
7864 multibuffer.push_excerpt(
7865 ExcerptProperties {
7866 buffer: &buffer,
7867 range: Point::new(1, 0)..Point::new(1, 4),
7868 },
7869 cx,
7870 );
7871 multibuffer
7872 });
7873
7874 assert_eq!(multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb");
7875
7876 let (_, view) = cx.add_window(Default::default(), |cx| {
7877 build_editor(multibuffer, settings, cx)
7878 });
7879 view.update(cx, |view, cx| {
7880 view.select_display_ranges(
7881 &[
7882 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7883 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7884 ],
7885 cx,
7886 );
7887
7888 view.handle_input(&Input("X".to_string()), cx);
7889 assert_eq!(view.text(cx), "Xaaaa\nXbbbb");
7890 assert_eq!(
7891 view.selected_display_ranges(cx),
7892 &[
7893 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7894 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7895 ]
7896 )
7897 });
7898 }
7899
7900 #[gpui::test]
7901 fn test_editing_overlapping_excerpts(cx: &mut gpui::MutableAppContext) {
7902 let settings = EditorSettings::test(cx);
7903 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
7904 let multibuffer = cx.add_model(|cx| {
7905 let mut multibuffer = MultiBuffer::new(0);
7906 multibuffer.push_excerpt(
7907 ExcerptProperties {
7908 buffer: &buffer,
7909 range: Point::new(0, 0)..Point::new(1, 4),
7910 },
7911 cx,
7912 );
7913 multibuffer.push_excerpt(
7914 ExcerptProperties {
7915 buffer: &buffer,
7916 range: Point::new(1, 0)..Point::new(2, 4),
7917 },
7918 cx,
7919 );
7920 multibuffer
7921 });
7922
7923 assert_eq!(
7924 multibuffer.read(cx).read(cx).text(),
7925 "aaaa\nbbbb\nbbbb\ncccc"
7926 );
7927
7928 let (_, view) = cx.add_window(Default::default(), |cx| {
7929 build_editor(multibuffer, settings, cx)
7930 });
7931 view.update(cx, |view, cx| {
7932 view.select_display_ranges(
7933 &[
7934 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7935 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
7936 ],
7937 cx,
7938 );
7939
7940 view.handle_input(&Input("X".to_string()), cx);
7941 assert_eq!(view.text(cx), "aaaa\nbXbbXb\nbXbbXb\ncccc");
7942 assert_eq!(
7943 view.selected_display_ranges(cx),
7944 &[
7945 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7946 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7947 ]
7948 );
7949
7950 view.newline(&Newline, cx);
7951 assert_eq!(view.text(cx), "aaaa\nbX\nbbX\nb\nbX\nbbX\nb\ncccc");
7952 assert_eq!(
7953 view.selected_display_ranges(cx),
7954 &[
7955 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
7956 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
7957 ]
7958 );
7959 });
7960 }
7961
7962 #[gpui::test]
7963 fn test_refresh_selections(cx: &mut gpui::MutableAppContext) {
7964 let settings = EditorSettings::test(cx);
7965 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
7966 let mut excerpt1_id = None;
7967 let multibuffer = cx.add_model(|cx| {
7968 let mut multibuffer = MultiBuffer::new(0);
7969 excerpt1_id = Some(multibuffer.push_excerpt(
7970 ExcerptProperties {
7971 buffer: &buffer,
7972 range: Point::new(0, 0)..Point::new(1, 4),
7973 },
7974 cx,
7975 ));
7976 multibuffer.push_excerpt(
7977 ExcerptProperties {
7978 buffer: &buffer,
7979 range: Point::new(1, 0)..Point::new(2, 4),
7980 },
7981 cx,
7982 );
7983 multibuffer
7984 });
7985 assert_eq!(
7986 multibuffer.read(cx).read(cx).text(),
7987 "aaaa\nbbbb\nbbbb\ncccc"
7988 );
7989 let (_, editor) = cx.add_window(Default::default(), |cx| {
7990 let mut editor = build_editor(multibuffer.clone(), settings, cx);
7991 editor.select_display_ranges(
7992 &[
7993 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7994 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7995 ],
7996 cx,
7997 );
7998 editor
7999 });
8000
8001 // Refreshing selections is a no-op when excerpts haven't changed.
8002 editor.update(cx, |editor, cx| {
8003 editor.refresh_selections(cx);
8004 assert_eq!(
8005 editor.selected_display_ranges(cx),
8006 [
8007 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
8008 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
8009 ]
8010 );
8011 });
8012
8013 multibuffer.update(cx, |multibuffer, cx| {
8014 multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx);
8015 });
8016 editor.update(cx, |editor, cx| {
8017 // Removing an excerpt causes the first selection to become degenerate.
8018 assert_eq!(
8019 editor.selected_display_ranges(cx),
8020 [
8021 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
8022 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
8023 ]
8024 );
8025
8026 // Refreshing selections will relocate the first selection to the original buffer
8027 // location.
8028 editor.refresh_selections(cx);
8029 assert_eq!(
8030 editor.selected_display_ranges(cx),
8031 [
8032 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
8033 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3)
8034 ]
8035 );
8036 });
8037 }
8038
8039 #[gpui::test]
8040 async fn test_extra_newline_insertion(mut cx: gpui::TestAppContext) {
8041 let settings = cx.read(EditorSettings::test);
8042 let language = Arc::new(Language::new(
8043 LanguageConfig {
8044 brackets: vec![
8045 BracketPair {
8046 start: "{".to_string(),
8047 end: "}".to_string(),
8048 close: true,
8049 newline: true,
8050 },
8051 BracketPair {
8052 start: "/* ".to_string(),
8053 end: " */".to_string(),
8054 close: true,
8055 newline: true,
8056 },
8057 ],
8058 ..Default::default()
8059 },
8060 Some(tree_sitter_rust::language()),
8061 ));
8062
8063 let text = concat!(
8064 "{ }\n", // Suppress rustfmt
8065 " x\n", //
8066 " /* */\n", //
8067 "x\n", //
8068 "{{} }\n", //
8069 );
8070
8071 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8072 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8073 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8074 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
8075 .await;
8076
8077 view.update(&mut cx, |view, cx| {
8078 view.select_display_ranges(
8079 &[
8080 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
8081 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
8082 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
8083 ],
8084 cx,
8085 );
8086 view.newline(&Newline, cx);
8087
8088 assert_eq!(
8089 view.buffer().read(cx).read(cx).text(),
8090 concat!(
8091 "{ \n", // Suppress rustfmt
8092 "\n", //
8093 "}\n", //
8094 " x\n", //
8095 " /* \n", //
8096 " \n", //
8097 " */\n", //
8098 "x\n", //
8099 "{{} \n", //
8100 "}\n", //
8101 )
8102 );
8103 });
8104 }
8105
8106 #[gpui::test]
8107 fn test_highlighted_ranges(cx: &mut gpui::MutableAppContext) {
8108 let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
8109 let settings = EditorSettings::test(&cx);
8110 let (_, editor) = cx.add_window(Default::default(), |cx| {
8111 build_editor(buffer.clone(), settings, cx)
8112 });
8113
8114 editor.update(cx, |editor, cx| {
8115 struct Type1;
8116 struct Type2;
8117
8118 let buffer = buffer.read(cx).snapshot(cx);
8119
8120 let anchor_range = |range: Range<Point>| {
8121 buffer.anchor_after(range.start)..buffer.anchor_after(range.end)
8122 };
8123
8124 editor.highlight_ranges::<Type1>(
8125 vec![
8126 anchor_range(Point::new(2, 1)..Point::new(2, 3)),
8127 anchor_range(Point::new(4, 2)..Point::new(4, 4)),
8128 anchor_range(Point::new(6, 3)..Point::new(6, 5)),
8129 anchor_range(Point::new(8, 4)..Point::new(8, 6)),
8130 ],
8131 Color::red(),
8132 cx,
8133 );
8134 editor.highlight_ranges::<Type2>(
8135 vec![
8136 anchor_range(Point::new(3, 2)..Point::new(3, 5)),
8137 anchor_range(Point::new(5, 3)..Point::new(5, 6)),
8138 anchor_range(Point::new(7, 4)..Point::new(7, 7)),
8139 anchor_range(Point::new(9, 5)..Point::new(9, 8)),
8140 ],
8141 Color::green(),
8142 cx,
8143 );
8144
8145 let snapshot = editor.snapshot(cx);
8146 let mut highlighted_ranges = editor.highlighted_ranges_in_range(
8147 anchor_range(Point::new(3, 4)..Point::new(7, 4)),
8148 &snapshot,
8149 );
8150 // Enforce a consistent ordering based on color without relying on the ordering of the
8151 // highlight's `TypeId` which is non-deterministic.
8152 highlighted_ranges.sort_unstable_by_key(|(_, color)| *color);
8153 assert_eq!(
8154 highlighted_ranges,
8155 &[
8156 (
8157 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 5),
8158 Color::green(),
8159 ),
8160 (
8161 DisplayPoint::new(5, 3)..DisplayPoint::new(5, 6),
8162 Color::green(),
8163 ),
8164 (
8165 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 4),
8166 Color::red(),
8167 ),
8168 (
8169 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
8170 Color::red(),
8171 ),
8172 ]
8173 );
8174 assert_eq!(
8175 editor.highlighted_ranges_in_range(
8176 anchor_range(Point::new(5, 6)..Point::new(6, 4)),
8177 &snapshot,
8178 ),
8179 &[(
8180 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
8181 Color::red(),
8182 )]
8183 );
8184 });
8185 }
8186
8187 #[test]
8188 fn test_combine_syntax_and_fuzzy_match_highlights() {
8189 let string = "abcdefghijklmnop";
8190 let default = HighlightStyle::default();
8191 let syntax_ranges = [
8192 (
8193 0..3,
8194 HighlightStyle {
8195 color: Color::red(),
8196 ..default
8197 },
8198 ),
8199 (
8200 4..8,
8201 HighlightStyle {
8202 color: Color::green(),
8203 ..default
8204 },
8205 ),
8206 ];
8207 let match_indices = [4, 6, 7, 8];
8208 assert_eq!(
8209 combine_syntax_and_fuzzy_match_highlights(
8210 &string,
8211 default,
8212 syntax_ranges.into_iter(),
8213 &match_indices,
8214 ),
8215 &[
8216 (
8217 0..3,
8218 HighlightStyle {
8219 color: Color::red(),
8220 ..default
8221 },
8222 ),
8223 (
8224 4..5,
8225 HighlightStyle {
8226 color: Color::green(),
8227 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
8228 ..default
8229 },
8230 ),
8231 (
8232 5..6,
8233 HighlightStyle {
8234 color: Color::green(),
8235 ..default
8236 },
8237 ),
8238 (
8239 6..8,
8240 HighlightStyle {
8241 color: Color::green(),
8242 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
8243 ..default
8244 },
8245 ),
8246 (
8247 8..9,
8248 HighlightStyle {
8249 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
8250 ..default
8251 },
8252 ),
8253 ]
8254 );
8255 }
8256
8257 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
8258 let point = DisplayPoint::new(row as u32, column as u32);
8259 point..point
8260 }
8261
8262 fn build_editor(
8263 buffer: ModelHandle<MultiBuffer>,
8264 settings: EditorSettings,
8265 cx: &mut ViewContext<Editor>,
8266 ) -> Editor {
8267 Editor::for_buffer(buffer, Arc::new(move |_| settings.clone()), None, cx)
8268 }
8269}
8270
8271trait RangeExt<T> {
8272 fn sorted(&self) -> Range<T>;
8273 fn to_inclusive(&self) -> RangeInclusive<T>;
8274}
8275
8276impl<T: Ord + Clone> RangeExt<T> for Range<T> {
8277 fn sorted(&self) -> Self {
8278 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
8279 }
8280
8281 fn to_inclusive(&self) -> RangeInclusive<T> {
8282 self.start.clone()..=self.end.clone()
8283 }
8284}