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, Bound, 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, MultiBufferItemHandle};
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, MultiBuffer, MultiBufferSnapshot,
39 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 2,
813 1,
814 cx,
815 )
816 });
817 cx.observe(&buffer, Self::on_buffer_changed).detach();
818 cx.subscribe(&buffer, Self::on_buffer_event).detach();
819 cx.observe(&display_map, Self::on_display_map_changed)
820 .detach();
821
822 let mut this = Self {
823 handle: cx.weak_handle(),
824 buffer,
825 display_map,
826 selections: Arc::from([]),
827 pending_selection: None,
828 columnar_selection_tail: None,
829 next_selection_id: 0,
830 add_selections_state: None,
831 select_next_state: None,
832 selection_history: Default::default(),
833 autoclose_stack: Default::default(),
834 snippet_stack: Default::default(),
835 select_larger_syntax_node_stack: Vec::new(),
836 active_diagnostics: None,
837 build_settings,
838 project,
839 scroll_position: Vector2F::zero(),
840 scroll_top_anchor: None,
841 autoscroll_request: None,
842 focused: false,
843 show_local_cursors: false,
844 blink_epoch: 0,
845 blinking_paused: false,
846 mode: EditorMode::Full,
847 vertical_scroll_margin: 3.0,
848 placeholder_text: None,
849 highlighted_rows: None,
850 highlighted_ranges: Default::default(),
851 nav_history: None,
852 context_menu: None,
853 completion_tasks: Default::default(),
854 next_completion_id: 0,
855 };
856 let selection = Selection {
857 id: post_inc(&mut this.next_selection_id),
858 start: 0,
859 end: 0,
860 reversed: false,
861 goal: SelectionGoal::None,
862 };
863 this.update_selections(vec![selection], None, cx);
864 this
865 }
866
867 pub fn open_new(
868 workspace: &mut Workspace,
869 _: &workspace::OpenNew,
870 cx: &mut ViewContext<Workspace>,
871 ) {
872 let buffer = cx
873 .add_model(|cx| Buffer::new(0, "", cx).with_language(language::PLAIN_TEXT.clone(), cx));
874 workspace.open_item(BufferItemHandle(buffer), cx);
875 }
876
877 pub fn replica_id(&self, cx: &AppContext) -> ReplicaId {
878 self.buffer.read(cx).replica_id()
879 }
880
881 pub fn buffer(&self) -> &ModelHandle<MultiBuffer> {
882 &self.buffer
883 }
884
885 pub fn title(&self, cx: &AppContext) -> String {
886 let filename = self
887 .buffer()
888 .read(cx)
889 .file(cx)
890 .map(|file| file.file_name(cx));
891 if let Some(name) = filename {
892 name.to_string_lossy().into()
893 } else {
894 "untitled".into()
895 }
896 }
897
898 pub fn snapshot(&mut self, cx: &mut MutableAppContext) -> EditorSnapshot {
899 EditorSnapshot {
900 mode: self.mode,
901 display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
902 scroll_position: self.scroll_position,
903 scroll_top_anchor: self.scroll_top_anchor.clone(),
904 placeholder_text: self.placeholder_text.clone(),
905 is_focused: self
906 .handle
907 .upgrade(cx)
908 .map_or(false, |handle| handle.is_focused(cx)),
909 }
910 }
911
912 pub fn language<'a>(&self, cx: &'a AppContext) -> Option<&'a Arc<Language>> {
913 self.buffer.read(cx).language(cx)
914 }
915
916 pub fn set_placeholder_text(
917 &mut self,
918 placeholder_text: impl Into<Arc<str>>,
919 cx: &mut ViewContext<Self>,
920 ) {
921 self.placeholder_text = Some(placeholder_text.into());
922 cx.notify();
923 }
924
925 pub fn set_vertical_scroll_margin(&mut self, margin_rows: usize, cx: &mut ViewContext<Self>) {
926 self.vertical_scroll_margin = margin_rows as f32;
927 cx.notify();
928 }
929
930 pub fn set_scroll_position(&mut self, scroll_position: Vector2F, cx: &mut ViewContext<Self>) {
931 let map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
932
933 if scroll_position.y() == 0. {
934 self.scroll_top_anchor = None;
935 self.scroll_position = scroll_position;
936 } else {
937 let scroll_top_buffer_offset =
938 DisplayPoint::new(scroll_position.y() as u32, 0).to_offset(&map, Bias::Right);
939 let anchor = map
940 .buffer_snapshot
941 .anchor_at(scroll_top_buffer_offset, Bias::Right);
942 self.scroll_position = vec2f(
943 scroll_position.x(),
944 scroll_position.y() - anchor.to_display_point(&map).row() as f32,
945 );
946 self.scroll_top_anchor = Some(anchor);
947 }
948
949 cx.notify();
950 }
951
952 pub fn scroll_position(&self, cx: &mut ViewContext<Self>) -> Vector2F {
953 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
954 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor)
955 }
956
957 pub fn clamp_scroll_left(&mut self, max: f32) -> bool {
958 if max < self.scroll_position.x() {
959 self.scroll_position.set_x(max);
960 true
961 } else {
962 false
963 }
964 }
965
966 pub fn autoscroll_vertically(
967 &mut self,
968 viewport_height: f32,
969 line_height: f32,
970 cx: &mut ViewContext<Self>,
971 ) -> bool {
972 let visible_lines = viewport_height / line_height;
973 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
974 let mut scroll_position =
975 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor);
976 let max_scroll_top = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
977 (display_map.max_point().row() as f32 - visible_lines + 1.).max(0.)
978 } else {
979 display_map.max_point().row().saturating_sub(1) as f32
980 };
981 if scroll_position.y() > max_scroll_top {
982 scroll_position.set_y(max_scroll_top);
983 self.set_scroll_position(scroll_position, cx);
984 }
985
986 let autoscroll = if let Some(autoscroll) = self.autoscroll_request.take() {
987 autoscroll
988 } else {
989 return false;
990 };
991
992 let first_cursor_top;
993 let last_cursor_bottom;
994 if let Some(highlighted_rows) = &self.highlighted_rows {
995 first_cursor_top = highlighted_rows.start as f32;
996 last_cursor_bottom = first_cursor_top + 1.;
997 } else if autoscroll == Autoscroll::Newest {
998 let newest_selection = self.newest_selection::<Point>(&display_map.buffer_snapshot);
999 first_cursor_top = newest_selection.head().to_display_point(&display_map).row() as f32;
1000 last_cursor_bottom = first_cursor_top + 1.;
1001 } else {
1002 let selections = self.local_selections::<Point>(cx);
1003 first_cursor_top = selections
1004 .first()
1005 .unwrap()
1006 .head()
1007 .to_display_point(&display_map)
1008 .row() as f32;
1009 last_cursor_bottom = selections
1010 .last()
1011 .unwrap()
1012 .head()
1013 .to_display_point(&display_map)
1014 .row() as f32
1015 + 1.0;
1016 }
1017
1018 let margin = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
1019 0.
1020 } else {
1021 ((visible_lines - (last_cursor_bottom - first_cursor_top)) / 2.0).floor()
1022 };
1023 if margin < 0.0 {
1024 return false;
1025 }
1026
1027 match autoscroll {
1028 Autoscroll::Fit | Autoscroll::Newest => {
1029 let margin = margin.min(self.vertical_scroll_margin);
1030 let target_top = (first_cursor_top - margin).max(0.0);
1031 let target_bottom = last_cursor_bottom + margin;
1032 let start_row = scroll_position.y();
1033 let end_row = start_row + visible_lines;
1034
1035 if target_top < start_row {
1036 scroll_position.set_y(target_top);
1037 self.set_scroll_position(scroll_position, cx);
1038 } else if target_bottom >= end_row {
1039 scroll_position.set_y(target_bottom - visible_lines);
1040 self.set_scroll_position(scroll_position, cx);
1041 }
1042 }
1043 Autoscroll::Center => {
1044 scroll_position.set_y((first_cursor_top - margin).max(0.0));
1045 self.set_scroll_position(scroll_position, cx);
1046 }
1047 }
1048
1049 true
1050 }
1051
1052 pub fn autoscroll_horizontally(
1053 &mut self,
1054 start_row: u32,
1055 viewport_width: f32,
1056 scroll_width: f32,
1057 max_glyph_width: f32,
1058 layouts: &[text_layout::Line],
1059 cx: &mut ViewContext<Self>,
1060 ) -> bool {
1061 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1062 let selections = self.local_selections::<Point>(cx);
1063
1064 let mut target_left;
1065 let mut target_right;
1066
1067 if self.highlighted_rows.is_some() {
1068 target_left = 0.0_f32;
1069 target_right = 0.0_f32;
1070 } else {
1071 target_left = std::f32::INFINITY;
1072 target_right = 0.0_f32;
1073 for selection in selections {
1074 let head = selection.head().to_display_point(&display_map);
1075 if head.row() >= start_row && head.row() < start_row + layouts.len() as u32 {
1076 let start_column = head.column().saturating_sub(3);
1077 let end_column = cmp::min(display_map.line_len(head.row()), head.column() + 3);
1078 target_left = target_left.min(
1079 layouts[(head.row() - start_row) as usize]
1080 .x_for_index(start_column as usize),
1081 );
1082 target_right = target_right.max(
1083 layouts[(head.row() - start_row) as usize].x_for_index(end_column as usize)
1084 + max_glyph_width,
1085 );
1086 }
1087 }
1088 }
1089
1090 target_right = target_right.min(scroll_width);
1091
1092 if target_right - target_left > viewport_width {
1093 return false;
1094 }
1095
1096 let scroll_left = self.scroll_position.x() * max_glyph_width;
1097 let scroll_right = scroll_left + viewport_width;
1098
1099 if target_left < scroll_left {
1100 self.scroll_position.set_x(target_left / max_glyph_width);
1101 true
1102 } else if target_right > scroll_right {
1103 self.scroll_position
1104 .set_x((target_right - viewport_width) / max_glyph_width);
1105 true
1106 } else {
1107 false
1108 }
1109 }
1110
1111 fn select(&mut self, Select(phase): &Select, cx: &mut ViewContext<Self>) {
1112 self.hide_context_menu(cx);
1113
1114 match phase {
1115 SelectPhase::Begin {
1116 position,
1117 add,
1118 click_count,
1119 } => self.begin_selection(*position, *add, *click_count, cx),
1120 SelectPhase::BeginColumnar {
1121 position,
1122 overshoot,
1123 } => self.begin_columnar_selection(*position, *overshoot, cx),
1124 SelectPhase::Extend {
1125 position,
1126 click_count,
1127 } => self.extend_selection(*position, *click_count, cx),
1128 SelectPhase::Update {
1129 position,
1130 overshoot,
1131 scroll_position,
1132 } => self.update_selection(*position, *overshoot, *scroll_position, cx),
1133 SelectPhase::End => self.end_selection(cx),
1134 }
1135 }
1136
1137 fn extend_selection(
1138 &mut self,
1139 position: DisplayPoint,
1140 click_count: usize,
1141 cx: &mut ViewContext<Self>,
1142 ) {
1143 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1144 let tail = self
1145 .newest_selection::<usize>(&display_map.buffer_snapshot)
1146 .tail();
1147 self.begin_selection(position, false, click_count, cx);
1148
1149 let position = position.to_offset(&display_map, Bias::Left);
1150 let tail_anchor = display_map.buffer_snapshot.anchor_before(tail);
1151 let pending = self.pending_selection.as_mut().unwrap();
1152
1153 if position >= tail {
1154 pending.selection.start = tail_anchor.clone();
1155 } else {
1156 pending.selection.end = tail_anchor.clone();
1157 pending.selection.reversed = true;
1158 }
1159
1160 match &mut pending.mode {
1161 SelectMode::Word(range) | SelectMode::Line(range) => {
1162 *range = tail_anchor.clone()..tail_anchor
1163 }
1164 _ => {}
1165 }
1166 }
1167
1168 fn begin_selection(
1169 &mut self,
1170 position: DisplayPoint,
1171 add: bool,
1172 click_count: usize,
1173 cx: &mut ViewContext<Self>,
1174 ) {
1175 if !self.focused {
1176 cx.focus_self();
1177 cx.emit(Event::Activate);
1178 }
1179
1180 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1181 let buffer = &display_map.buffer_snapshot;
1182 let newest_selection = self.newest_anchor_selection().unwrap().clone();
1183
1184 let start;
1185 let end;
1186 let mode;
1187 match click_count {
1188 1 => {
1189 start = buffer.anchor_before(position.to_point(&display_map));
1190 end = start.clone();
1191 mode = SelectMode::Character;
1192 }
1193 2 => {
1194 let range = movement::surrounding_word(&display_map, position);
1195 start = buffer.anchor_before(range.start.to_point(&display_map));
1196 end = buffer.anchor_before(range.end.to_point(&display_map));
1197 mode = SelectMode::Word(start.clone()..end.clone());
1198 }
1199 3 => {
1200 let position = display_map
1201 .clip_point(position, Bias::Left)
1202 .to_point(&display_map);
1203 let line_start = display_map.prev_line_boundary(position).0;
1204 let next_line_start = buffer.clip_point(
1205 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1206 Bias::Left,
1207 );
1208 start = buffer.anchor_before(line_start);
1209 end = buffer.anchor_before(next_line_start);
1210 mode = SelectMode::Line(start.clone()..end.clone());
1211 }
1212 _ => {
1213 start = buffer.anchor_before(0);
1214 end = buffer.anchor_before(buffer.len());
1215 mode = SelectMode::All;
1216 }
1217 }
1218
1219 self.push_to_nav_history(newest_selection.head(), Some(end.to_point(&buffer)), cx);
1220
1221 let selection = Selection {
1222 id: post_inc(&mut self.next_selection_id),
1223 start,
1224 end,
1225 reversed: false,
1226 goal: SelectionGoal::None,
1227 };
1228
1229 if !add {
1230 self.update_selections::<usize>(Vec::new(), None, cx);
1231 } else if click_count > 1 {
1232 // Remove the newest selection since it was only added as part of this multi-click.
1233 let mut selections = self.local_selections(cx);
1234 selections.retain(|selection| selection.id != newest_selection.id);
1235 self.update_selections::<usize>(selections, None, cx)
1236 }
1237
1238 self.pending_selection = Some(PendingSelection { selection, mode });
1239
1240 cx.notify();
1241 }
1242
1243 fn begin_columnar_selection(
1244 &mut self,
1245 position: DisplayPoint,
1246 overshoot: u32,
1247 cx: &mut ViewContext<Self>,
1248 ) {
1249 if !self.focused {
1250 cx.focus_self();
1251 cx.emit(Event::Activate);
1252 }
1253
1254 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1255 let tail = self
1256 .newest_selection::<Point>(&display_map.buffer_snapshot)
1257 .tail();
1258 self.columnar_selection_tail = Some(display_map.buffer_snapshot.anchor_before(tail));
1259
1260 self.select_columns(
1261 tail.to_display_point(&display_map),
1262 position,
1263 overshoot,
1264 &display_map,
1265 cx,
1266 );
1267 }
1268
1269 fn update_selection(
1270 &mut self,
1271 position: DisplayPoint,
1272 overshoot: u32,
1273 scroll_position: Vector2F,
1274 cx: &mut ViewContext<Self>,
1275 ) {
1276 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1277
1278 if let Some(tail) = self.columnar_selection_tail.as_ref() {
1279 let tail = tail.to_display_point(&display_map);
1280 self.select_columns(tail, position, overshoot, &display_map, cx);
1281 } else if let Some(PendingSelection { selection, mode }) = self.pending_selection.as_mut() {
1282 let buffer = self.buffer.read(cx).snapshot(cx);
1283 let head;
1284 let tail;
1285 match mode {
1286 SelectMode::Character => {
1287 head = position.to_point(&display_map);
1288 tail = selection.tail().to_point(&buffer);
1289 }
1290 SelectMode::Word(original_range) => {
1291 let original_display_range = original_range.start.to_display_point(&display_map)
1292 ..original_range.end.to_display_point(&display_map);
1293 let original_buffer_range = original_display_range.start.to_point(&display_map)
1294 ..original_display_range.end.to_point(&display_map);
1295 if movement::is_inside_word(&display_map, position)
1296 || original_display_range.contains(&position)
1297 {
1298 let word_range = movement::surrounding_word(&display_map, position);
1299 if word_range.start < original_display_range.start {
1300 head = word_range.start.to_point(&display_map);
1301 } else {
1302 head = word_range.end.to_point(&display_map);
1303 }
1304 } else {
1305 head = position.to_point(&display_map);
1306 }
1307
1308 if head <= original_buffer_range.start {
1309 tail = original_buffer_range.end;
1310 } else {
1311 tail = original_buffer_range.start;
1312 }
1313 }
1314 SelectMode::Line(original_range) => {
1315 let original_range = original_range.to_point(&display_map.buffer_snapshot);
1316
1317 let position = display_map
1318 .clip_point(position, Bias::Left)
1319 .to_point(&display_map);
1320 let line_start = display_map.prev_line_boundary(position).0;
1321 let next_line_start = buffer.clip_point(
1322 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1323 Bias::Left,
1324 );
1325
1326 if line_start < original_range.start {
1327 head = line_start
1328 } else {
1329 head = next_line_start
1330 }
1331
1332 if head <= original_range.start {
1333 tail = original_range.end;
1334 } else {
1335 tail = original_range.start;
1336 }
1337 }
1338 SelectMode::All => {
1339 return;
1340 }
1341 };
1342
1343 if head < tail {
1344 selection.start = buffer.anchor_before(head);
1345 selection.end = buffer.anchor_before(tail);
1346 selection.reversed = true;
1347 } else {
1348 selection.start = buffer.anchor_before(tail);
1349 selection.end = buffer.anchor_before(head);
1350 selection.reversed = false;
1351 }
1352 } else {
1353 log::error!("update_selection dispatched with no pending selection");
1354 return;
1355 }
1356
1357 self.set_scroll_position(scroll_position, cx);
1358 cx.notify();
1359 }
1360
1361 fn end_selection(&mut self, cx: &mut ViewContext<Self>) {
1362 self.columnar_selection_tail.take();
1363 if self.pending_selection.is_some() {
1364 let selections = self.local_selections::<usize>(cx);
1365 self.update_selections(selections, None, cx);
1366 }
1367 }
1368
1369 fn select_columns(
1370 &mut self,
1371 tail: DisplayPoint,
1372 head: DisplayPoint,
1373 overshoot: u32,
1374 display_map: &DisplaySnapshot,
1375 cx: &mut ViewContext<Self>,
1376 ) {
1377 let start_row = cmp::min(tail.row(), head.row());
1378 let end_row = cmp::max(tail.row(), head.row());
1379 let start_column = cmp::min(tail.column(), head.column() + overshoot);
1380 let end_column = cmp::max(tail.column(), head.column() + overshoot);
1381 let reversed = start_column < tail.column();
1382
1383 let selections = (start_row..=end_row)
1384 .filter_map(|row| {
1385 if start_column <= display_map.line_len(row) && !display_map.is_block_line(row) {
1386 let start = display_map
1387 .clip_point(DisplayPoint::new(row, start_column), Bias::Left)
1388 .to_point(&display_map);
1389 let end = display_map
1390 .clip_point(DisplayPoint::new(row, end_column), Bias::Right)
1391 .to_point(&display_map);
1392 Some(Selection {
1393 id: post_inc(&mut self.next_selection_id),
1394 start,
1395 end,
1396 reversed,
1397 goal: SelectionGoal::None,
1398 })
1399 } else {
1400 None
1401 }
1402 })
1403 .collect::<Vec<_>>();
1404
1405 self.update_selections(selections, None, cx);
1406 cx.notify();
1407 }
1408
1409 pub fn is_selecting(&self) -> bool {
1410 self.pending_selection.is_some() || self.columnar_selection_tail.is_some()
1411 }
1412
1413 pub fn cancel(&mut self, _: &Cancel, cx: &mut ViewContext<Self>) {
1414 if self.hide_context_menu(cx).is_some() {
1415 return;
1416 }
1417
1418 if self.snippet_stack.pop().is_some() {
1419 return;
1420 }
1421
1422 if self.mode != EditorMode::Full {
1423 cx.propagate_action();
1424 return;
1425 }
1426
1427 if self.active_diagnostics.is_some() {
1428 self.dismiss_diagnostics(cx);
1429 } else if let Some(PendingSelection { selection, .. }) = self.pending_selection.take() {
1430 let buffer = self.buffer.read(cx).snapshot(cx);
1431 let selection = Selection {
1432 id: selection.id,
1433 start: selection.start.to_point(&buffer),
1434 end: selection.end.to_point(&buffer),
1435 reversed: selection.reversed,
1436 goal: selection.goal,
1437 };
1438 if self.local_selections::<Point>(cx).is_empty() {
1439 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
1440 }
1441 } else {
1442 let buffer = self.buffer.read(cx).snapshot(cx);
1443 let mut oldest_selection = self.oldest_selection::<usize>(&buffer);
1444 if self.selection_count() == 1 {
1445 if oldest_selection.is_empty() {
1446 cx.propagate_action();
1447 return;
1448 }
1449
1450 oldest_selection.start = oldest_selection.head().clone();
1451 oldest_selection.end = oldest_selection.head().clone();
1452 }
1453 self.update_selections(vec![oldest_selection], Some(Autoscroll::Fit), cx);
1454 }
1455 }
1456
1457 #[cfg(any(test, feature = "test-support"))]
1458 pub fn selected_ranges<D: TextDimension + Ord + Sub<D, Output = D>>(
1459 &self,
1460 cx: &mut MutableAppContext,
1461 ) -> Vec<Range<D>> {
1462 self.local_selections::<D>(cx)
1463 .iter()
1464 .map(|s| {
1465 if s.reversed {
1466 s.end.clone()..s.start.clone()
1467 } else {
1468 s.start.clone()..s.end.clone()
1469 }
1470 })
1471 .collect()
1472 }
1473
1474 #[cfg(any(test, feature = "test-support"))]
1475 pub fn selected_display_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
1476 let display_map = self
1477 .display_map
1478 .update(cx, |display_map, cx| display_map.snapshot(cx));
1479 self.selections
1480 .iter()
1481 .chain(
1482 self.pending_selection
1483 .as_ref()
1484 .map(|pending| &pending.selection),
1485 )
1486 .map(|s| {
1487 if s.reversed {
1488 s.end.to_display_point(&display_map)..s.start.to_display_point(&display_map)
1489 } else {
1490 s.start.to_display_point(&display_map)..s.end.to_display_point(&display_map)
1491 }
1492 })
1493 .collect()
1494 }
1495
1496 pub fn select_ranges<I, T>(
1497 &mut self,
1498 ranges: I,
1499 autoscroll: Option<Autoscroll>,
1500 cx: &mut ViewContext<Self>,
1501 ) where
1502 I: IntoIterator<Item = Range<T>>,
1503 T: ToOffset,
1504 {
1505 let buffer = self.buffer.read(cx).snapshot(cx);
1506 let selections = ranges
1507 .into_iter()
1508 .map(|range| {
1509 let mut start = range.start.to_offset(&buffer);
1510 let mut end = range.end.to_offset(&buffer);
1511 let reversed = if start > end {
1512 mem::swap(&mut start, &mut end);
1513 true
1514 } else {
1515 false
1516 };
1517 Selection {
1518 id: post_inc(&mut self.next_selection_id),
1519 start,
1520 end,
1521 reversed,
1522 goal: SelectionGoal::None,
1523 }
1524 })
1525 .collect::<Vec<_>>();
1526 self.update_selections(selections, autoscroll, cx);
1527 }
1528
1529 #[cfg(any(test, feature = "test-support"))]
1530 pub fn select_display_ranges<'a, T>(&mut self, ranges: T, cx: &mut ViewContext<Self>)
1531 where
1532 T: IntoIterator<Item = &'a Range<DisplayPoint>>,
1533 {
1534 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1535 let selections = ranges
1536 .into_iter()
1537 .map(|range| {
1538 let mut start = range.start;
1539 let mut end = range.end;
1540 let reversed = if start > end {
1541 mem::swap(&mut start, &mut end);
1542 true
1543 } else {
1544 false
1545 };
1546 Selection {
1547 id: post_inc(&mut self.next_selection_id),
1548 start: start.to_point(&display_map),
1549 end: end.to_point(&display_map),
1550 reversed,
1551 goal: SelectionGoal::None,
1552 }
1553 })
1554 .collect();
1555 self.update_selections(selections, None, cx);
1556 }
1557
1558 pub fn handle_input(&mut self, action: &Input, cx: &mut ViewContext<Self>) {
1559 let text = action.0.as_ref();
1560 if !self.skip_autoclose_end(text, cx) {
1561 self.start_transaction(cx);
1562 self.insert(text, cx);
1563 self.autoclose_pairs(cx);
1564 self.end_transaction(cx);
1565 self.trigger_completion_on_input(text, cx);
1566 }
1567 }
1568
1569 pub fn newline(&mut self, _: &Newline, cx: &mut ViewContext<Self>) {
1570 self.start_transaction(cx);
1571 let mut old_selections = SmallVec::<[_; 32]>::new();
1572 {
1573 let selections = self.local_selections::<usize>(cx);
1574 let buffer = self.buffer.read(cx).snapshot(cx);
1575 for selection in selections.iter() {
1576 let start_point = selection.start.to_point(&buffer);
1577 let indent = buffer
1578 .indent_column_for_line(start_point.row)
1579 .min(start_point.column);
1580 let start = selection.start;
1581 let end = selection.end;
1582
1583 let mut insert_extra_newline = false;
1584 if let Some(language) = buffer.language() {
1585 let leading_whitespace_len = buffer
1586 .reversed_chars_at(start)
1587 .take_while(|c| c.is_whitespace() && *c != '\n')
1588 .map(|c| c.len_utf8())
1589 .sum::<usize>();
1590
1591 let trailing_whitespace_len = buffer
1592 .chars_at(end)
1593 .take_while(|c| c.is_whitespace() && *c != '\n')
1594 .map(|c| c.len_utf8())
1595 .sum::<usize>();
1596
1597 insert_extra_newline = language.brackets().iter().any(|pair| {
1598 let pair_start = pair.start.trim_end();
1599 let pair_end = pair.end.trim_start();
1600
1601 pair.newline
1602 && buffer.contains_str_at(end + trailing_whitespace_len, pair_end)
1603 && buffer.contains_str_at(
1604 (start - leading_whitespace_len).saturating_sub(pair_start.len()),
1605 pair_start,
1606 )
1607 });
1608 }
1609
1610 old_selections.push((
1611 selection.id,
1612 buffer.anchor_after(end),
1613 start..end,
1614 indent,
1615 insert_extra_newline,
1616 ));
1617 }
1618 }
1619
1620 self.buffer.update(cx, |buffer, cx| {
1621 let mut delta = 0_isize;
1622 let mut pending_edit: Option<PendingEdit> = None;
1623 for (_, _, range, indent, insert_extra_newline) in &old_selections {
1624 if pending_edit.as_ref().map_or(false, |pending| {
1625 pending.indent != *indent
1626 || pending.insert_extra_newline != *insert_extra_newline
1627 }) {
1628 let pending = pending_edit.take().unwrap();
1629 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1630 new_text.push('\n');
1631 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1632 if pending.insert_extra_newline {
1633 new_text = new_text.repeat(2);
1634 }
1635 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1636 delta += pending.delta;
1637 }
1638
1639 let start = (range.start as isize + delta) as usize;
1640 let end = (range.end as isize + delta) as usize;
1641 let mut text_len = *indent as usize + 1;
1642 if *insert_extra_newline {
1643 text_len *= 2;
1644 }
1645
1646 let pending = pending_edit.get_or_insert_with(Default::default);
1647 pending.delta += text_len as isize - (end - start) as isize;
1648 pending.indent = *indent;
1649 pending.insert_extra_newline = *insert_extra_newline;
1650 pending.ranges.push(start..end);
1651 }
1652
1653 let pending = pending_edit.unwrap();
1654 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1655 new_text.push('\n');
1656 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1657 if pending.insert_extra_newline {
1658 new_text = new_text.repeat(2);
1659 }
1660 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1661
1662 let buffer = buffer.read(cx);
1663 self.selections = self
1664 .selections
1665 .iter()
1666 .cloned()
1667 .zip(old_selections)
1668 .map(
1669 |(mut new_selection, (_, end_anchor, _, _, insert_extra_newline))| {
1670 let mut cursor = end_anchor.to_point(&buffer);
1671 if insert_extra_newline {
1672 cursor.row -= 1;
1673 cursor.column = buffer.line_len(cursor.row);
1674 }
1675 let anchor = buffer.anchor_after(cursor);
1676 new_selection.start = anchor.clone();
1677 new_selection.end = anchor;
1678 new_selection
1679 },
1680 )
1681 .collect();
1682 });
1683
1684 self.request_autoscroll(Autoscroll::Fit, cx);
1685 self.end_transaction(cx);
1686
1687 #[derive(Default)]
1688 struct PendingEdit {
1689 indent: u32,
1690 insert_extra_newline: bool,
1691 delta: isize,
1692 ranges: SmallVec<[Range<usize>; 32]>,
1693 }
1694 }
1695
1696 pub fn insert(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1697 self.start_transaction(cx);
1698
1699 let old_selections = self.local_selections::<usize>(cx);
1700 let selection_anchors = self.buffer.update(cx, |buffer, cx| {
1701 let anchors = {
1702 let snapshot = buffer.read(cx);
1703 old_selections
1704 .iter()
1705 .map(|s| (s.id, s.goal, snapshot.anchor_after(s.end)))
1706 .collect::<Vec<_>>()
1707 };
1708 let edit_ranges = old_selections.iter().map(|s| s.start..s.end);
1709 buffer.edit_with_autoindent(edit_ranges, text, cx);
1710 anchors
1711 });
1712
1713 let selections = {
1714 let snapshot = self.buffer.read(cx).read(cx);
1715 selection_anchors
1716 .into_iter()
1717 .map(|(id, goal, position)| {
1718 let position = position.to_offset(&snapshot);
1719 Selection {
1720 id,
1721 start: position,
1722 end: position,
1723 goal,
1724 reversed: false,
1725 }
1726 })
1727 .collect()
1728 };
1729 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1730 self.end_transaction(cx);
1731 }
1732
1733 fn trigger_completion_on_input(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1734 if let Some(selection) = self.newest_anchor_selection() {
1735 if self
1736 .buffer
1737 .read(cx)
1738 .is_completion_trigger(selection.head(), text, cx)
1739 {
1740 self.show_completions(&ShowCompletions, cx);
1741 } else {
1742 self.hide_context_menu(cx);
1743 }
1744 }
1745 }
1746
1747 fn autoclose_pairs(&mut self, cx: &mut ViewContext<Self>) {
1748 let selections = self.local_selections::<usize>(cx);
1749 let mut bracket_pair_state = None;
1750 let mut new_selections = None;
1751 self.buffer.update(cx, |buffer, cx| {
1752 let mut snapshot = buffer.snapshot(cx);
1753 let left_biased_selections = selections
1754 .iter()
1755 .map(|selection| Selection {
1756 id: selection.id,
1757 start: snapshot.anchor_before(selection.start),
1758 end: snapshot.anchor_before(selection.end),
1759 reversed: selection.reversed,
1760 goal: selection.goal,
1761 })
1762 .collect::<Vec<_>>();
1763
1764 let autoclose_pair = snapshot.language().and_then(|language| {
1765 let first_selection_start = selections.first().unwrap().start;
1766 let pair = language.brackets().iter().find(|pair| {
1767 snapshot.contains_str_at(
1768 first_selection_start.saturating_sub(pair.start.len()),
1769 &pair.start,
1770 )
1771 });
1772 pair.and_then(|pair| {
1773 let should_autoclose = selections[1..].iter().all(|selection| {
1774 snapshot.contains_str_at(
1775 selection.start.saturating_sub(pair.start.len()),
1776 &pair.start,
1777 )
1778 });
1779
1780 if should_autoclose {
1781 Some(pair.clone())
1782 } else {
1783 None
1784 }
1785 })
1786 });
1787
1788 if let Some(pair) = autoclose_pair {
1789 let selection_ranges = selections
1790 .iter()
1791 .map(|selection| {
1792 let start = selection.start.to_offset(&snapshot);
1793 start..start
1794 })
1795 .collect::<SmallVec<[_; 32]>>();
1796
1797 buffer.edit(selection_ranges, &pair.end, cx);
1798 snapshot = buffer.snapshot(cx);
1799
1800 new_selections = Some(
1801 self.resolve_selections::<usize, _>(left_biased_selections.iter(), &snapshot)
1802 .collect::<Vec<_>>(),
1803 );
1804
1805 if pair.end.len() == 1 {
1806 let mut delta = 0;
1807 bracket_pair_state = Some(BracketPairState {
1808 ranges: selections
1809 .iter()
1810 .map(move |selection| {
1811 let offset = selection.start + delta;
1812 delta += 1;
1813 snapshot.anchor_before(offset)..snapshot.anchor_after(offset)
1814 })
1815 .collect(),
1816 pair,
1817 });
1818 }
1819 }
1820 });
1821
1822 if let Some(new_selections) = new_selections {
1823 self.update_selections(new_selections, None, cx);
1824 }
1825 if let Some(bracket_pair_state) = bracket_pair_state {
1826 self.autoclose_stack.push(bracket_pair_state);
1827 }
1828 }
1829
1830 fn skip_autoclose_end(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
1831 let old_selections = self.local_selections::<usize>(cx);
1832 let autoclose_pair = if let Some(autoclose_pair) = self.autoclose_stack.last() {
1833 autoclose_pair
1834 } else {
1835 return false;
1836 };
1837 if text != autoclose_pair.pair.end {
1838 return false;
1839 }
1840
1841 debug_assert_eq!(old_selections.len(), autoclose_pair.ranges.len());
1842
1843 let buffer = self.buffer.read(cx).snapshot(cx);
1844 if old_selections
1845 .iter()
1846 .zip(autoclose_pair.ranges.iter().map(|r| r.to_offset(&buffer)))
1847 .all(|(selection, autoclose_range)| {
1848 let autoclose_range_end = autoclose_range.end.to_offset(&buffer);
1849 selection.is_empty() && selection.start == autoclose_range_end
1850 })
1851 {
1852 let new_selections = old_selections
1853 .into_iter()
1854 .map(|selection| {
1855 let cursor = selection.start + 1;
1856 Selection {
1857 id: selection.id,
1858 start: cursor,
1859 end: cursor,
1860 reversed: false,
1861 goal: SelectionGoal::None,
1862 }
1863 })
1864 .collect();
1865 self.autoclose_stack.pop();
1866 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1867 true
1868 } else {
1869 false
1870 }
1871 }
1872
1873 fn completion_query(buffer: &MultiBufferSnapshot, position: impl ToOffset) -> Option<String> {
1874 let offset = position.to_offset(buffer);
1875 let (word_range, kind) = buffer.surrounding_word(offset);
1876 if offset > word_range.start && kind == Some(CharKind::Word) {
1877 Some(
1878 buffer
1879 .text_for_range(word_range.start..offset)
1880 .collect::<String>(),
1881 )
1882 } else {
1883 None
1884 }
1885 }
1886
1887 fn show_completions(&mut self, _: &ShowCompletions, cx: &mut ViewContext<Self>) {
1888 let project = if let Some(project) = self.project.clone() {
1889 project
1890 } else {
1891 return;
1892 };
1893
1894 let position = if let Some(selection) = self.newest_anchor_selection() {
1895 selection.head()
1896 } else {
1897 return;
1898 };
1899 let (buffer, buffer_position) = self
1900 .buffer
1901 .read(cx)
1902 .text_anchor_for_position(position.clone(), cx);
1903
1904 let query = Self::completion_query(&self.buffer.read(cx).read(cx), position.clone());
1905 let completions = project.update(cx, |project, cx| {
1906 project.completions(&buffer, buffer_position.clone(), cx)
1907 });
1908
1909 let id = post_inc(&mut self.next_completion_id);
1910 let task = cx.spawn_weak(|this, mut cx| {
1911 async move {
1912 let completions = completions.await?;
1913 if completions.is_empty() {
1914 return Ok(());
1915 }
1916
1917 let mut menu = CompletionsMenu {
1918 id,
1919 initial_position: position,
1920 match_candidates: completions
1921 .iter()
1922 .enumerate()
1923 .map(|(id, completion)| {
1924 StringMatchCandidate::new(
1925 id,
1926 completion.label.text[completion.label.filter_range.clone()].into(),
1927 )
1928 })
1929 .collect(),
1930 buffer,
1931 completions: completions.into(),
1932 matches: Vec::new().into(),
1933 selected_item: 0,
1934 list: Default::default(),
1935 };
1936
1937 menu.filter(query.as_deref(), cx.background()).await;
1938
1939 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
1940 this.update(&mut cx, |this, cx| {
1941 match this.context_menu.as_ref() {
1942 None => {}
1943 Some(ContextMenu::Completions(prev_menu)) => {
1944 if prev_menu.id > menu.id {
1945 return;
1946 }
1947 }
1948 _ => return,
1949 }
1950
1951 this.completion_tasks.retain(|(id, _)| *id > menu.id);
1952 if this.focused {
1953 this.show_context_menu(ContextMenu::Completions(menu), cx);
1954 }
1955
1956 cx.notify();
1957 });
1958 }
1959 Ok::<_, anyhow::Error>(())
1960 }
1961 .log_err()
1962 });
1963 self.completion_tasks.push((id, task));
1964 }
1965
1966 pub fn confirm_completion(
1967 &mut self,
1968 ConfirmCompletion(completion_ix): &ConfirmCompletion,
1969 cx: &mut ViewContext<Self>,
1970 ) -> Option<Task<Result<()>>> {
1971 use language::ToOffset as _;
1972
1973 let completions_menu = if let ContextMenu::Completions(menu) = self.hide_context_menu(cx)? {
1974 menu
1975 } else {
1976 return None;
1977 };
1978
1979 let mat = completions_menu
1980 .matches
1981 .get(completion_ix.unwrap_or(completions_menu.selected_item))?;
1982 let buffer_handle = completions_menu.buffer;
1983 let completion = completions_menu.completions.get(mat.candidate_id)?;
1984
1985 let snippet;
1986 let text;
1987 if completion.is_snippet() {
1988 snippet = Some(Snippet::parse(&completion.new_text).log_err()?);
1989 text = snippet.as_ref().unwrap().text.clone();
1990 } else {
1991 snippet = None;
1992 text = completion.new_text.clone();
1993 };
1994 let buffer = buffer_handle.read(cx);
1995 let old_range = completion.old_range.to_offset(&buffer);
1996 let old_text = buffer.text_for_range(old_range.clone()).collect::<String>();
1997
1998 let selections = self.local_selections::<usize>(cx);
1999 let newest_selection = self.newest_anchor_selection()?;
2000 if newest_selection.start.buffer_id != buffer_handle.id() {
2001 return None;
2002 }
2003
2004 let lookbehind = newest_selection
2005 .start
2006 .text_anchor
2007 .to_offset(buffer)
2008 .saturating_sub(old_range.start);
2009 let lookahead = old_range
2010 .end
2011 .saturating_sub(newest_selection.end.text_anchor.to_offset(buffer));
2012 let mut common_prefix_len = old_text
2013 .bytes()
2014 .zip(text.bytes())
2015 .take_while(|(a, b)| a == b)
2016 .count();
2017
2018 let snapshot = self.buffer.read(cx).snapshot(cx);
2019 let mut ranges = Vec::new();
2020 for selection in &selections {
2021 if snapshot.contains_str_at(selection.start.saturating_sub(lookbehind), &old_text) {
2022 let start = selection.start.saturating_sub(lookbehind);
2023 let end = selection.end + lookahead;
2024 ranges.push(start + common_prefix_len..end);
2025 } else {
2026 common_prefix_len = 0;
2027 ranges.clear();
2028 ranges.extend(selections.iter().map(|s| {
2029 if s.id == newest_selection.id {
2030 old_range.clone()
2031 } else {
2032 s.start..s.end
2033 }
2034 }));
2035 break;
2036 }
2037 }
2038 let text = &text[common_prefix_len..];
2039
2040 self.start_transaction(cx);
2041 if let Some(mut snippet) = snippet {
2042 snippet.text = text.to_string();
2043 for tabstop in snippet.tabstops.iter_mut().flatten() {
2044 tabstop.start -= common_prefix_len as isize;
2045 tabstop.end -= common_prefix_len as isize;
2046 }
2047
2048 self.insert_snippet(&ranges, snippet, cx).log_err();
2049 } else {
2050 self.buffer.update(cx, |buffer, cx| {
2051 buffer.edit_with_autoindent(ranges, text, cx);
2052 });
2053 }
2054 self.end_transaction(cx);
2055
2056 let project = self.project.clone()?;
2057 let apply_edits = project.update(cx, |project, cx| {
2058 project.apply_additional_edits_for_completion(
2059 buffer_handle,
2060 completion.clone(),
2061 true,
2062 cx,
2063 )
2064 });
2065 Some(cx.foreground().spawn(async move {
2066 apply_edits.await?;
2067 Ok(())
2068 }))
2069 }
2070
2071 fn show_code_actions(&mut self, _: &ShowCodeActions, cx: &mut ViewContext<Self>) {
2072 let head = if let Some(selection) = self.newest_anchor_selection() {
2073 selection.head()
2074 } else {
2075 return;
2076 };
2077 let project = if let Some(project) = self.project.clone() {
2078 project
2079 } else {
2080 return;
2081 };
2082
2083 let (buffer, head) = self.buffer.read(cx).text_anchor_for_position(head, cx);
2084 let actions = project.update(cx, |project, cx| project.code_actions(&buffer, head, cx));
2085
2086 cx.spawn(|this, mut cx| async move {
2087 let actions = actions.await?;
2088 if !actions.is_empty() {
2089 this.update(&mut cx, |this, cx| {
2090 if this.focused {
2091 this.show_context_menu(
2092 ContextMenu::CodeActions(CodeActionsMenu {
2093 buffer,
2094 actions: actions.into(),
2095 selected_item: 0,
2096 list: UniformListState::default(),
2097 }),
2098 cx,
2099 );
2100 }
2101 });
2102 }
2103 Ok::<_, anyhow::Error>(())
2104 })
2105 .detach_and_log_err(cx);
2106 }
2107
2108 fn confirm_code_action(
2109 workspace: &mut Workspace,
2110 ConfirmCodeAction(action_ix): &ConfirmCodeAction,
2111 cx: &mut ViewContext<Workspace>,
2112 ) -> Option<Task<Result<()>>> {
2113 let editor = workspace.active_item(cx)?.act_as::<Editor>(cx)?;
2114 let actions_menu = if let ContextMenu::CodeActions(menu) =
2115 editor.update(cx, |editor, cx| editor.hide_context_menu(cx))?
2116 {
2117 menu
2118 } else {
2119 return None;
2120 };
2121 let action_ix = action_ix.unwrap_or(actions_menu.selected_item);
2122 let action = actions_menu.actions.get(action_ix)?.clone();
2123 let buffer = actions_menu.buffer;
2124 let replica_id = editor.read(cx).replica_id(cx);
2125
2126 let apply_code_actions = workspace.project().clone().update(cx, |project, cx| {
2127 project.apply_code_action(buffer, action, true, cx)
2128 });
2129 Some(cx.spawn(|workspace, mut cx| async move {
2130 let project_transaction = apply_code_actions.await?;
2131
2132 let mut ranges_to_highlight = Vec::new();
2133 let excerpt_buffer = cx.add_model(|cx| {
2134 let mut multibuffer = MultiBuffer::new(replica_id);
2135 for (buffer, transaction) in &project_transaction.0 {
2136 let snapshot = buffer.read(cx).snapshot();
2137 ranges_to_highlight.extend(
2138 multibuffer.push_excerpts_with_context_lines(
2139 buffer.clone(),
2140 snapshot
2141 .edited_ranges_for_transaction::<usize>(transaction)
2142 .collect(),
2143 1,
2144 cx,
2145 ),
2146 );
2147 }
2148 multibuffer
2149 });
2150
2151 workspace.update(&mut cx, |workspace, cx| {
2152 let editor = workspace.open_item(MultiBufferItemHandle(excerpt_buffer), cx);
2153 if let Some(editor) = editor.act_as::<Self>(cx) {
2154 editor.update(cx, |editor, cx| {
2155 editor.highlight_ranges::<Self>(ranges_to_highlight, Color::blue(), cx);
2156 });
2157 }
2158 });
2159
2160 Ok(())
2161 }))
2162 }
2163
2164 pub fn showing_context_menu(&self) -> bool {
2165 self.context_menu
2166 .as_ref()
2167 .map_or(false, |menu| menu.visible())
2168 }
2169
2170 pub fn render_context_menu(&self, cx: &AppContext) -> Option<ElementBox> {
2171 self.context_menu
2172 .as_ref()
2173 .map(|menu| menu.render(self.build_settings.clone(), cx))
2174 }
2175
2176 fn show_context_menu(&mut self, menu: ContextMenu, cx: &mut ViewContext<Self>) {
2177 if !matches!(menu, ContextMenu::Completions(_)) {
2178 self.completion_tasks.clear();
2179 }
2180 self.context_menu = Some(menu);
2181 cx.notify()
2182 }
2183
2184 fn hide_context_menu(&mut self, cx: &mut ViewContext<Self>) -> Option<ContextMenu> {
2185 cx.notify();
2186 self.completion_tasks.clear();
2187 self.context_menu.take()
2188 }
2189
2190 pub fn insert_snippet(
2191 &mut self,
2192 insertion_ranges: &[Range<usize>],
2193 snippet: Snippet,
2194 cx: &mut ViewContext<Self>,
2195 ) -> Result<()> {
2196 let tabstops = self.buffer.update(cx, |buffer, cx| {
2197 buffer.edit_with_autoindent(insertion_ranges.iter().cloned(), &snippet.text, cx);
2198
2199 let snapshot = &*buffer.read(cx);
2200 let snippet = &snippet;
2201 snippet
2202 .tabstops
2203 .iter()
2204 .map(|tabstop| {
2205 let mut tabstop_ranges = tabstop
2206 .iter()
2207 .flat_map(|tabstop_range| {
2208 let mut delta = 0 as isize;
2209 insertion_ranges.iter().map(move |insertion_range| {
2210 let insertion_start = insertion_range.start as isize + delta;
2211 delta +=
2212 snippet.text.len() as isize - insertion_range.len() as isize;
2213
2214 let start = snapshot.anchor_before(
2215 (insertion_start + tabstop_range.start) as usize,
2216 );
2217 let end = snapshot
2218 .anchor_after((insertion_start + tabstop_range.end) as usize);
2219 start..end
2220 })
2221 })
2222 .collect::<Vec<_>>();
2223 tabstop_ranges
2224 .sort_unstable_by(|a, b| a.start.cmp(&b.start, snapshot).unwrap());
2225 tabstop_ranges
2226 })
2227 .collect::<Vec<_>>()
2228 });
2229
2230 if let Some(tabstop) = tabstops.first() {
2231 self.select_ranges(tabstop.iter().cloned(), Some(Autoscroll::Fit), cx);
2232 self.snippet_stack.push(SnippetState {
2233 active_index: 0,
2234 ranges: tabstops,
2235 });
2236 }
2237
2238 Ok(())
2239 }
2240
2241 pub fn move_to_next_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) -> bool {
2242 self.move_to_snippet_tabstop(Bias::Right, cx)
2243 }
2244
2245 pub fn move_to_prev_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) {
2246 self.move_to_snippet_tabstop(Bias::Left, cx);
2247 }
2248
2249 pub fn move_to_snippet_tabstop(&mut self, bias: Bias, cx: &mut ViewContext<Self>) -> bool {
2250 let buffer = self.buffer.read(cx).snapshot(cx);
2251
2252 if let Some(snippet) = self.snippet_stack.last_mut() {
2253 match bias {
2254 Bias::Left => {
2255 if snippet.active_index > 0 {
2256 snippet.active_index -= 1;
2257 } else {
2258 return false;
2259 }
2260 }
2261 Bias::Right => {
2262 if snippet.active_index + 1 < snippet.ranges.len() {
2263 snippet.active_index += 1;
2264 } else {
2265 return false;
2266 }
2267 }
2268 }
2269 if let Some(current_ranges) = snippet.ranges.get(snippet.active_index) {
2270 let new_selections = current_ranges
2271 .iter()
2272 .map(|new_range| {
2273 let new_range = new_range.to_offset(&buffer);
2274 Selection {
2275 id: post_inc(&mut self.next_selection_id),
2276 start: new_range.start,
2277 end: new_range.end,
2278 reversed: false,
2279 goal: SelectionGoal::None,
2280 }
2281 })
2282 .collect();
2283
2284 // Remove the snippet state when moving to the last tabstop.
2285 if snippet.active_index + 1 == snippet.ranges.len() {
2286 self.snippet_stack.pop();
2287 }
2288
2289 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2290 return true;
2291 }
2292 self.snippet_stack.pop();
2293 }
2294
2295 false
2296 }
2297
2298 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
2299 self.start_transaction(cx);
2300 self.select_all(&SelectAll, cx);
2301 self.insert("", cx);
2302 self.end_transaction(cx);
2303 }
2304
2305 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
2306 self.start_transaction(cx);
2307 let mut selections = self.local_selections::<Point>(cx);
2308 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2309 for selection in &mut selections {
2310 if selection.is_empty() {
2311 let head = selection.head().to_display_point(&display_map);
2312 let cursor = movement::left(&display_map, head)
2313 .unwrap()
2314 .to_point(&display_map);
2315 selection.set_head(cursor);
2316 selection.goal = SelectionGoal::None;
2317 }
2318 }
2319 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2320 self.insert("", cx);
2321 self.end_transaction(cx);
2322 }
2323
2324 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
2325 self.start_transaction(cx);
2326 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2327 let mut selections = self.local_selections::<Point>(cx);
2328 for selection in &mut selections {
2329 if selection.is_empty() {
2330 let head = selection.head().to_display_point(&display_map);
2331 let cursor = movement::right(&display_map, head)
2332 .unwrap()
2333 .to_point(&display_map);
2334 selection.set_head(cursor);
2335 selection.goal = SelectionGoal::None;
2336 }
2337 }
2338 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2339 self.insert(&"", cx);
2340 self.end_transaction(cx);
2341 }
2342
2343 pub fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
2344 if self.move_to_next_snippet_tabstop(cx) {
2345 return;
2346 }
2347
2348 self.start_transaction(cx);
2349 let tab_size = (self.build_settings)(cx).tab_size;
2350 let mut selections = self.local_selections::<Point>(cx);
2351 let mut last_indent = None;
2352 self.buffer.update(cx, |buffer, cx| {
2353 for selection in &mut selections {
2354 if selection.is_empty() {
2355 let char_column = buffer
2356 .read(cx)
2357 .text_for_range(Point::new(selection.start.row, 0)..selection.start)
2358 .flat_map(str::chars)
2359 .count();
2360 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
2361 buffer.edit(
2362 [selection.start..selection.start],
2363 " ".repeat(chars_to_next_tab_stop),
2364 cx,
2365 );
2366 selection.start.column += chars_to_next_tab_stop as u32;
2367 selection.end = selection.start;
2368 } else {
2369 let mut start_row = selection.start.row;
2370 let mut end_row = selection.end.row + 1;
2371
2372 // If a selection ends at the beginning of a line, don't indent
2373 // that last line.
2374 if selection.end.column == 0 {
2375 end_row -= 1;
2376 }
2377
2378 // Avoid re-indenting a row that has already been indented by a
2379 // previous selection, but still update this selection's column
2380 // to reflect that indentation.
2381 if let Some((last_indent_row, last_indent_len)) = last_indent {
2382 if last_indent_row == selection.start.row {
2383 selection.start.column += last_indent_len;
2384 start_row += 1;
2385 }
2386 if last_indent_row == selection.end.row {
2387 selection.end.column += last_indent_len;
2388 }
2389 }
2390
2391 for row in start_row..end_row {
2392 let indent_column = buffer.read(cx).indent_column_for_line(row) as usize;
2393 let columns_to_next_tab_stop = tab_size - (indent_column % tab_size);
2394 let row_start = Point::new(row, 0);
2395 buffer.edit(
2396 [row_start..row_start],
2397 " ".repeat(columns_to_next_tab_stop),
2398 cx,
2399 );
2400
2401 // Update this selection's endpoints to reflect the indentation.
2402 if row == selection.start.row {
2403 selection.start.column += columns_to_next_tab_stop as u32;
2404 }
2405 if row == selection.end.row {
2406 selection.end.column += columns_to_next_tab_stop as u32;
2407 }
2408
2409 last_indent = Some((row, columns_to_next_tab_stop as u32));
2410 }
2411 }
2412 }
2413 });
2414
2415 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2416 self.end_transaction(cx);
2417 }
2418
2419 pub fn outdent(&mut self, _: &Outdent, cx: &mut ViewContext<Self>) {
2420 if !self.snippet_stack.is_empty() {
2421 self.move_to_prev_snippet_tabstop(cx);
2422 return;
2423 }
2424
2425 self.start_transaction(cx);
2426 let tab_size = (self.build_settings)(cx).tab_size;
2427 let selections = self.local_selections::<Point>(cx);
2428 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2429 let mut deletion_ranges = Vec::new();
2430 let mut last_outdent = None;
2431 {
2432 let buffer = self.buffer.read(cx).read(cx);
2433 for selection in &selections {
2434 let mut rows = selection.spanned_rows(false, &display_map);
2435
2436 // Avoid re-outdenting a row that has already been outdented by a
2437 // previous selection.
2438 if let Some(last_row) = last_outdent {
2439 if last_row == rows.start {
2440 rows.start += 1;
2441 }
2442 }
2443
2444 for row in rows {
2445 let column = buffer.indent_column_for_line(row) as usize;
2446 if column > 0 {
2447 let mut deletion_len = (column % tab_size) as u32;
2448 if deletion_len == 0 {
2449 deletion_len = tab_size as u32;
2450 }
2451 deletion_ranges.push(Point::new(row, 0)..Point::new(row, deletion_len));
2452 last_outdent = Some(row);
2453 }
2454 }
2455 }
2456 }
2457 self.buffer.update(cx, |buffer, cx| {
2458 buffer.edit(deletion_ranges, "", cx);
2459 });
2460
2461 self.update_selections(
2462 self.local_selections::<usize>(cx),
2463 Some(Autoscroll::Fit),
2464 cx,
2465 );
2466 self.end_transaction(cx);
2467 }
2468
2469 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
2470 self.start_transaction(cx);
2471
2472 let selections = self.local_selections::<Point>(cx);
2473 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2474 let buffer = self.buffer.read(cx).snapshot(cx);
2475
2476 let mut new_cursors = Vec::new();
2477 let mut edit_ranges = Vec::new();
2478 let mut selections = selections.iter().peekable();
2479 while let Some(selection) = selections.next() {
2480 let mut rows = selection.spanned_rows(false, &display_map);
2481 let goal_display_column = selection.head().to_display_point(&display_map).column();
2482
2483 // Accumulate contiguous regions of rows that we want to delete.
2484 while let Some(next_selection) = selections.peek() {
2485 let next_rows = next_selection.spanned_rows(false, &display_map);
2486 if next_rows.start <= rows.end {
2487 rows.end = next_rows.end;
2488 selections.next().unwrap();
2489 } else {
2490 break;
2491 }
2492 }
2493
2494 let mut edit_start = Point::new(rows.start, 0).to_offset(&buffer);
2495 let edit_end;
2496 let cursor_buffer_row;
2497 if buffer.max_point().row >= rows.end {
2498 // If there's a line after the range, delete the \n from the end of the row range
2499 // and position the cursor on the next line.
2500 edit_end = Point::new(rows.end, 0).to_offset(&buffer);
2501 cursor_buffer_row = rows.end;
2502 } else {
2503 // If there isn't a line after the range, delete the \n from the line before the
2504 // start of the row range and position the cursor there.
2505 edit_start = edit_start.saturating_sub(1);
2506 edit_end = buffer.len();
2507 cursor_buffer_row = rows.start.saturating_sub(1);
2508 }
2509
2510 let mut cursor = Point::new(cursor_buffer_row, 0).to_display_point(&display_map);
2511 *cursor.column_mut() =
2512 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
2513
2514 new_cursors.push((
2515 selection.id,
2516 buffer.anchor_after(cursor.to_point(&display_map)),
2517 ));
2518 edit_ranges.push(edit_start..edit_end);
2519 }
2520
2521 let buffer = self.buffer.update(cx, |buffer, cx| {
2522 buffer.edit(edit_ranges, "", cx);
2523 buffer.snapshot(cx)
2524 });
2525 let new_selections = new_cursors
2526 .into_iter()
2527 .map(|(id, cursor)| {
2528 let cursor = cursor.to_point(&buffer);
2529 Selection {
2530 id,
2531 start: cursor,
2532 end: cursor,
2533 reversed: false,
2534 goal: SelectionGoal::None,
2535 }
2536 })
2537 .collect();
2538 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2539 self.end_transaction(cx);
2540 }
2541
2542 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
2543 self.start_transaction(cx);
2544
2545 let selections = self.local_selections::<Point>(cx);
2546 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2547 let buffer = &display_map.buffer_snapshot;
2548
2549 let mut edits = Vec::new();
2550 let mut selections_iter = selections.iter().peekable();
2551 while let Some(selection) = selections_iter.next() {
2552 // Avoid duplicating the same lines twice.
2553 let mut rows = selection.spanned_rows(false, &display_map);
2554
2555 while let Some(next_selection) = selections_iter.peek() {
2556 let next_rows = next_selection.spanned_rows(false, &display_map);
2557 if next_rows.start <= rows.end - 1 {
2558 rows.end = next_rows.end;
2559 selections_iter.next().unwrap();
2560 } else {
2561 break;
2562 }
2563 }
2564
2565 // Copy the text from the selected row region and splice it at the start of the region.
2566 let start = Point::new(rows.start, 0);
2567 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
2568 let text = buffer
2569 .text_for_range(start..end)
2570 .chain(Some("\n"))
2571 .collect::<String>();
2572 edits.push((start, text, rows.len() as u32));
2573 }
2574
2575 self.buffer.update(cx, |buffer, cx| {
2576 for (point, text, _) in edits.into_iter().rev() {
2577 buffer.edit(Some(point..point), text, cx);
2578 }
2579 });
2580
2581 self.request_autoscroll(Autoscroll::Fit, cx);
2582 self.end_transaction(cx);
2583 }
2584
2585 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
2586 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2587 let buffer = self.buffer.read(cx).snapshot(cx);
2588
2589 let mut edits = Vec::new();
2590 let mut unfold_ranges = Vec::new();
2591 let mut refold_ranges = Vec::new();
2592
2593 let selections = self.local_selections::<Point>(cx);
2594 let mut selections = selections.iter().peekable();
2595 let mut contiguous_row_selections = Vec::new();
2596 let mut new_selections = Vec::new();
2597
2598 while let Some(selection) = selections.next() {
2599 // Find all the selections that span a contiguous row range
2600 contiguous_row_selections.push(selection.clone());
2601 let start_row = selection.start.row;
2602 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
2603 display_map.next_line_boundary(selection.end).0.row + 1
2604 } else {
2605 selection.end.row
2606 };
2607
2608 while let Some(next_selection) = selections.peek() {
2609 if next_selection.start.row <= end_row {
2610 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
2611 display_map.next_line_boundary(next_selection.end).0.row + 1
2612 } else {
2613 next_selection.end.row
2614 };
2615 contiguous_row_selections.push(selections.next().unwrap().clone());
2616 } else {
2617 break;
2618 }
2619 }
2620
2621 // Move the text spanned by the row range to be before the line preceding the row range
2622 if start_row > 0 {
2623 let range_to_move = Point::new(start_row - 1, buffer.line_len(start_row - 1))
2624 ..Point::new(end_row - 1, buffer.line_len(end_row - 1));
2625 let insertion_point = display_map
2626 .prev_line_boundary(Point::new(start_row - 1, 0))
2627 .0;
2628
2629 // Don't move lines across excerpts
2630 if buffer
2631 .excerpt_boundaries_in_range((
2632 Bound::Excluded(insertion_point),
2633 Bound::Included(range_to_move.end),
2634 ))
2635 .next()
2636 .is_none()
2637 {
2638 let text = buffer
2639 .text_for_range(range_to_move.clone())
2640 .flat_map(|s| s.chars())
2641 .skip(1)
2642 .chain(['\n'])
2643 .collect::<String>();
2644
2645 edits.push((
2646 buffer.anchor_after(range_to_move.start)
2647 ..buffer.anchor_before(range_to_move.end),
2648 String::new(),
2649 ));
2650 let insertion_anchor = buffer.anchor_after(insertion_point);
2651 edits.push((insertion_anchor.clone()..insertion_anchor, text));
2652
2653 let row_delta = range_to_move.start.row - insertion_point.row + 1;
2654
2655 // Move selections up
2656 new_selections.extend(contiguous_row_selections.drain(..).map(
2657 |mut selection| {
2658 selection.start.row -= row_delta;
2659 selection.end.row -= row_delta;
2660 selection
2661 },
2662 ));
2663
2664 // Move folds up
2665 unfold_ranges.push(range_to_move.clone());
2666 for fold in display_map.folds_in_range(
2667 buffer.anchor_before(range_to_move.start)
2668 ..buffer.anchor_after(range_to_move.end),
2669 ) {
2670 let mut start = fold.start.to_point(&buffer);
2671 let mut end = fold.end.to_point(&buffer);
2672 start.row -= row_delta;
2673 end.row -= row_delta;
2674 refold_ranges.push(start..end);
2675 }
2676 }
2677 }
2678
2679 // If we didn't move line(s), preserve the existing selections
2680 new_selections.extend(contiguous_row_selections.drain(..));
2681 }
2682
2683 self.start_transaction(cx);
2684 self.unfold_ranges(unfold_ranges, cx);
2685 self.buffer.update(cx, |buffer, cx| {
2686 for (range, text) in edits {
2687 buffer.edit([range], text, cx);
2688 }
2689 });
2690 self.fold_ranges(refold_ranges, cx);
2691 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2692 self.end_transaction(cx);
2693 }
2694
2695 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
2696 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2697 let buffer = self.buffer.read(cx).snapshot(cx);
2698
2699 let mut edits = Vec::new();
2700 let mut unfold_ranges = Vec::new();
2701 let mut refold_ranges = Vec::new();
2702
2703 let selections = self.local_selections::<Point>(cx);
2704 let mut selections = selections.iter().peekable();
2705 let mut contiguous_row_selections = Vec::new();
2706 let mut new_selections = Vec::new();
2707
2708 while let Some(selection) = selections.next() {
2709 // Find all the selections that span a contiguous row range
2710 contiguous_row_selections.push(selection.clone());
2711 let start_row = selection.start.row;
2712 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
2713 display_map.next_line_boundary(selection.end).0.row + 1
2714 } else {
2715 selection.end.row
2716 };
2717
2718 while let Some(next_selection) = selections.peek() {
2719 if next_selection.start.row <= end_row {
2720 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
2721 display_map.next_line_boundary(next_selection.end).0.row + 1
2722 } else {
2723 next_selection.end.row
2724 };
2725 contiguous_row_selections.push(selections.next().unwrap().clone());
2726 } else {
2727 break;
2728 }
2729 }
2730
2731 // Move the text spanned by the row range to be after the last line of the row range
2732 if end_row <= buffer.max_point().row {
2733 let range_to_move = Point::new(start_row, 0)..Point::new(end_row, 0);
2734 let insertion_point = display_map.next_line_boundary(Point::new(end_row, 0)).0;
2735
2736 // Don't move lines across excerpt boundaries
2737 if buffer
2738 .excerpt_boundaries_in_range((
2739 Bound::Excluded(range_to_move.start),
2740 Bound::Included(insertion_point),
2741 ))
2742 .next()
2743 .is_none()
2744 {
2745 let mut text = String::from("\n");
2746 text.extend(buffer.text_for_range(range_to_move.clone()));
2747 text.pop(); // Drop trailing newline
2748 edits.push((
2749 buffer.anchor_after(range_to_move.start)
2750 ..buffer.anchor_before(range_to_move.end),
2751 String::new(),
2752 ));
2753 let insertion_anchor = buffer.anchor_after(insertion_point);
2754 edits.push((insertion_anchor.clone()..insertion_anchor, text));
2755
2756 let row_delta = insertion_point.row - range_to_move.end.row + 1;
2757
2758 // Move selections down
2759 new_selections.extend(contiguous_row_selections.drain(..).map(
2760 |mut selection| {
2761 selection.start.row += row_delta;
2762 selection.end.row += row_delta;
2763 selection
2764 },
2765 ));
2766
2767 // Move folds down
2768 unfold_ranges.push(range_to_move.clone());
2769 for fold in display_map.folds_in_range(
2770 buffer.anchor_before(range_to_move.start)
2771 ..buffer.anchor_after(range_to_move.end),
2772 ) {
2773 let mut start = fold.start.to_point(&buffer);
2774 let mut end = fold.end.to_point(&buffer);
2775 start.row += row_delta;
2776 end.row += row_delta;
2777 refold_ranges.push(start..end);
2778 }
2779 }
2780 }
2781
2782 // If we didn't move line(s), preserve the existing selections
2783 new_selections.extend(contiguous_row_selections.drain(..));
2784 }
2785
2786 self.start_transaction(cx);
2787 self.unfold_ranges(unfold_ranges, cx);
2788 self.buffer.update(cx, |buffer, cx| {
2789 for (range, text) in edits {
2790 buffer.edit([range], text, cx);
2791 }
2792 });
2793 self.fold_ranges(refold_ranges, cx);
2794 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2795 self.end_transaction(cx);
2796 }
2797
2798 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
2799 self.start_transaction(cx);
2800 let mut text = String::new();
2801 let mut selections = self.local_selections::<Point>(cx);
2802 let mut clipboard_selections = Vec::with_capacity(selections.len());
2803 {
2804 let buffer = self.buffer.read(cx).read(cx);
2805 let max_point = buffer.max_point();
2806 for selection in &mut selections {
2807 let is_entire_line = selection.is_empty();
2808 if is_entire_line {
2809 selection.start = Point::new(selection.start.row, 0);
2810 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
2811 selection.goal = SelectionGoal::None;
2812 }
2813 let mut len = 0;
2814 for chunk in buffer.text_for_range(selection.start..selection.end) {
2815 text.push_str(chunk);
2816 len += chunk.len();
2817 }
2818 clipboard_selections.push(ClipboardSelection {
2819 len,
2820 is_entire_line,
2821 });
2822 }
2823 }
2824 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2825 self.insert("", cx);
2826 self.end_transaction(cx);
2827
2828 cx.as_mut()
2829 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
2830 }
2831
2832 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
2833 let selections = self.local_selections::<Point>(cx);
2834 let mut text = String::new();
2835 let mut clipboard_selections = Vec::with_capacity(selections.len());
2836 {
2837 let buffer = self.buffer.read(cx).read(cx);
2838 let max_point = buffer.max_point();
2839 for selection in selections.iter() {
2840 let mut start = selection.start;
2841 let mut end = selection.end;
2842 let is_entire_line = selection.is_empty();
2843 if is_entire_line {
2844 start = Point::new(start.row, 0);
2845 end = cmp::min(max_point, Point::new(start.row + 1, 0));
2846 }
2847 let mut len = 0;
2848 for chunk in buffer.text_for_range(start..end) {
2849 text.push_str(chunk);
2850 len += chunk.len();
2851 }
2852 clipboard_selections.push(ClipboardSelection {
2853 len,
2854 is_entire_line,
2855 });
2856 }
2857 }
2858
2859 cx.as_mut()
2860 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
2861 }
2862
2863 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
2864 if let Some(item) = cx.as_mut().read_from_clipboard() {
2865 let clipboard_text = item.text();
2866 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
2867 let mut selections = self.local_selections::<usize>(cx);
2868 let all_selections_were_entire_line =
2869 clipboard_selections.iter().all(|s| s.is_entire_line);
2870 if clipboard_selections.len() != selections.len() {
2871 clipboard_selections.clear();
2872 }
2873
2874 let mut delta = 0_isize;
2875 let mut start_offset = 0;
2876 for (i, selection) in selections.iter_mut().enumerate() {
2877 let to_insert;
2878 let entire_line;
2879 if let Some(clipboard_selection) = clipboard_selections.get(i) {
2880 let end_offset = start_offset + clipboard_selection.len;
2881 to_insert = &clipboard_text[start_offset..end_offset];
2882 entire_line = clipboard_selection.is_entire_line;
2883 start_offset = end_offset
2884 } else {
2885 to_insert = clipboard_text.as_str();
2886 entire_line = all_selections_were_entire_line;
2887 }
2888
2889 selection.start = (selection.start as isize + delta) as usize;
2890 selection.end = (selection.end as isize + delta) as usize;
2891
2892 self.buffer.update(cx, |buffer, cx| {
2893 // If the corresponding selection was empty when this slice of the
2894 // clipboard text was written, then the entire line containing the
2895 // selection was copied. If this selection is also currently empty,
2896 // then paste the line before the current line of the buffer.
2897 let range = if selection.is_empty() && entire_line {
2898 let column = selection.start.to_point(&buffer.read(cx)).column as usize;
2899 let line_start = selection.start - column;
2900 line_start..line_start
2901 } else {
2902 selection.start..selection.end
2903 };
2904
2905 delta += to_insert.len() as isize - range.len() as isize;
2906 buffer.edit([range], to_insert, cx);
2907 selection.start += to_insert.len();
2908 selection.end = selection.start;
2909 });
2910 }
2911 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2912 } else {
2913 self.insert(clipboard_text, cx);
2914 }
2915 }
2916 }
2917
2918 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
2919 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
2920 if let Some((selections, _)) = self.selection_history.get(&tx_id).cloned() {
2921 self.set_selections(selections, cx);
2922 }
2923 self.request_autoscroll(Autoscroll::Fit, cx);
2924 }
2925 }
2926
2927 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
2928 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
2929 if let Some((_, Some(selections))) = self.selection_history.get(&tx_id).cloned() {
2930 self.set_selections(selections, cx);
2931 }
2932 self.request_autoscroll(Autoscroll::Fit, cx);
2933 }
2934 }
2935
2936 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
2937 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2938 let mut selections = self.local_selections::<Point>(cx);
2939 for selection in &mut selections {
2940 let start = selection.start.to_display_point(&display_map);
2941 let end = selection.end.to_display_point(&display_map);
2942
2943 if start != end {
2944 selection.end = selection.start.clone();
2945 } else {
2946 let cursor = movement::left(&display_map, start)
2947 .unwrap()
2948 .to_point(&display_map);
2949 selection.start = cursor.clone();
2950 selection.end = cursor;
2951 }
2952 selection.reversed = false;
2953 selection.goal = SelectionGoal::None;
2954 }
2955 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2956 }
2957
2958 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
2959 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2960 let mut selections = self.local_selections::<Point>(cx);
2961 for selection in &mut selections {
2962 let head = selection.head().to_display_point(&display_map);
2963 let cursor = movement::left(&display_map, head)
2964 .unwrap()
2965 .to_point(&display_map);
2966 selection.set_head(cursor);
2967 selection.goal = SelectionGoal::None;
2968 }
2969 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2970 }
2971
2972 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
2973 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2974 let mut selections = self.local_selections::<Point>(cx);
2975 for selection in &mut selections {
2976 let start = selection.start.to_display_point(&display_map);
2977 let end = selection.end.to_display_point(&display_map);
2978
2979 if start != end {
2980 selection.start = selection.end.clone();
2981 } else {
2982 let cursor = movement::right(&display_map, end)
2983 .unwrap()
2984 .to_point(&display_map);
2985 selection.start = cursor;
2986 selection.end = cursor;
2987 }
2988 selection.reversed = false;
2989 selection.goal = SelectionGoal::None;
2990 }
2991 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2992 }
2993
2994 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
2995 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2996 let mut selections = self.local_selections::<Point>(cx);
2997 for selection in &mut selections {
2998 let head = selection.head().to_display_point(&display_map);
2999 let cursor = movement::right(&display_map, head)
3000 .unwrap()
3001 .to_point(&display_map);
3002 selection.set_head(cursor);
3003 selection.goal = SelectionGoal::None;
3004 }
3005 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3006 }
3007
3008 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
3009 if let Some(context_menu) = self.context_menu.as_mut() {
3010 if context_menu.select_prev(cx) {
3011 return;
3012 }
3013 }
3014
3015 if matches!(self.mode, EditorMode::SingleLine) {
3016 cx.propagate_action();
3017 return;
3018 }
3019
3020 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3021 let mut selections = self.local_selections::<Point>(cx);
3022 for selection in &mut selections {
3023 let start = selection.start.to_display_point(&display_map);
3024 let end = selection.end.to_display_point(&display_map);
3025 if start != end {
3026 selection.goal = SelectionGoal::None;
3027 }
3028
3029 let (start, goal) = movement::up(&display_map, start, selection.goal).unwrap();
3030 let cursor = start.to_point(&display_map);
3031 selection.start = cursor;
3032 selection.end = cursor;
3033 selection.goal = goal;
3034 selection.reversed = false;
3035 }
3036 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3037 }
3038
3039 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
3040 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3041 let mut selections = self.local_selections::<Point>(cx);
3042 for selection in &mut selections {
3043 let head = selection.head().to_display_point(&display_map);
3044 let (head, goal) = movement::up(&display_map, head, selection.goal).unwrap();
3045 let cursor = head.to_point(&display_map);
3046 selection.set_head(cursor);
3047 selection.goal = goal;
3048 }
3049 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3050 }
3051
3052 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
3053 if let Some(context_menu) = self.context_menu.as_mut() {
3054 if context_menu.select_next(cx) {
3055 return;
3056 }
3057 }
3058
3059 if matches!(self.mode, EditorMode::SingleLine) {
3060 cx.propagate_action();
3061 return;
3062 }
3063
3064 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3065 let mut selections = self.local_selections::<Point>(cx);
3066 for selection in &mut selections {
3067 let start = selection.start.to_display_point(&display_map);
3068 let end = selection.end.to_display_point(&display_map);
3069 if start != end {
3070 selection.goal = SelectionGoal::None;
3071 }
3072
3073 let (start, goal) = movement::down(&display_map, end, selection.goal).unwrap();
3074 let cursor = start.to_point(&display_map);
3075 selection.start = cursor;
3076 selection.end = cursor;
3077 selection.goal = goal;
3078 selection.reversed = false;
3079 }
3080 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3081 }
3082
3083 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
3084 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3085 let mut selections = self.local_selections::<Point>(cx);
3086 for selection in &mut selections {
3087 let head = selection.head().to_display_point(&display_map);
3088 let (head, goal) = movement::down(&display_map, head, selection.goal).unwrap();
3089 let cursor = head.to_point(&display_map);
3090 selection.set_head(cursor);
3091 selection.goal = goal;
3092 }
3093 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3094 }
3095
3096 pub fn move_to_previous_word_boundary(
3097 &mut self,
3098 _: &MoveToPreviousWordBoundary,
3099 cx: &mut ViewContext<Self>,
3100 ) {
3101 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3102 let mut selections = self.local_selections::<Point>(cx);
3103 for selection in &mut selections {
3104 let head = selection.head().to_display_point(&display_map);
3105 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3106 selection.start = cursor.clone();
3107 selection.end = cursor;
3108 selection.reversed = false;
3109 selection.goal = SelectionGoal::None;
3110 }
3111 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3112 }
3113
3114 pub fn select_to_previous_word_boundary(
3115 &mut self,
3116 _: &SelectToPreviousWordBoundary,
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::prev_word_boundary(&display_map, head).to_point(&display_map);
3124 selection.set_head(cursor);
3125 selection.goal = SelectionGoal::None;
3126 }
3127 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3128 }
3129
3130 pub fn delete_to_previous_word_boundary(
3131 &mut self,
3132 _: &DeleteToPreviousWordBoundary,
3133 cx: &mut ViewContext<Self>,
3134 ) {
3135 self.start_transaction(cx);
3136 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3137 let mut selections = self.local_selections::<Point>(cx);
3138 for selection in &mut selections {
3139 if selection.is_empty() {
3140 let head = selection.head().to_display_point(&display_map);
3141 let cursor =
3142 movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3143 selection.set_head(cursor);
3144 selection.goal = SelectionGoal::None;
3145 }
3146 }
3147 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3148 self.insert("", cx);
3149 self.end_transaction(cx);
3150 }
3151
3152 pub fn move_to_next_word_boundary(
3153 &mut self,
3154 _: &MoveToNextWordBoundary,
3155 cx: &mut ViewContext<Self>,
3156 ) {
3157 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3158 let mut selections = self.local_selections::<Point>(cx);
3159 for selection in &mut selections {
3160 let head = selection.head().to_display_point(&display_map);
3161 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
3162 selection.start = cursor;
3163 selection.end = cursor;
3164 selection.reversed = false;
3165 selection.goal = SelectionGoal::None;
3166 }
3167 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3168 }
3169
3170 pub fn select_to_next_word_boundary(
3171 &mut self,
3172 _: &SelectToNextWordBoundary,
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 cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
3180 selection.set_head(cursor);
3181 selection.goal = SelectionGoal::None;
3182 }
3183 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3184 }
3185
3186 pub fn delete_to_next_word_boundary(
3187 &mut self,
3188 _: &DeleteToNextWordBoundary,
3189 cx: &mut ViewContext<Self>,
3190 ) {
3191 self.start_transaction(cx);
3192 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3193 let mut selections = self.local_selections::<Point>(cx);
3194 for selection in &mut selections {
3195 if selection.is_empty() {
3196 let head = selection.head().to_display_point(&display_map);
3197 let cursor =
3198 movement::next_word_boundary(&display_map, head).to_point(&display_map);
3199 selection.set_head(cursor);
3200 selection.goal = SelectionGoal::None;
3201 }
3202 }
3203 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3204 self.insert("", cx);
3205 self.end_transaction(cx);
3206 }
3207
3208 pub fn move_to_beginning_of_line(
3209 &mut self,
3210 _: &MoveToBeginningOfLine,
3211 cx: &mut ViewContext<Self>,
3212 ) {
3213 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3214 let mut selections = self.local_selections::<Point>(cx);
3215 for selection in &mut selections {
3216 let head = selection.head().to_display_point(&display_map);
3217 let new_head = movement::line_beginning(&display_map, head, true);
3218 let cursor = new_head.to_point(&display_map);
3219 selection.start = cursor;
3220 selection.end = cursor;
3221 selection.reversed = false;
3222 selection.goal = SelectionGoal::None;
3223 }
3224 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3225 }
3226
3227 pub fn select_to_beginning_of_line(
3228 &mut self,
3229 SelectToBeginningOfLine(stop_at_soft_boundaries): &SelectToBeginningOfLine,
3230 cx: &mut ViewContext<Self>,
3231 ) {
3232 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3233 let mut selections = self.local_selections::<Point>(cx);
3234 for selection in &mut selections {
3235 let head = selection.head().to_display_point(&display_map);
3236 let new_head = movement::line_beginning(&display_map, head, *stop_at_soft_boundaries);
3237 selection.set_head(new_head.to_point(&display_map));
3238 selection.goal = SelectionGoal::None;
3239 }
3240 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3241 }
3242
3243 pub fn delete_to_beginning_of_line(
3244 &mut self,
3245 _: &DeleteToBeginningOfLine,
3246 cx: &mut ViewContext<Self>,
3247 ) {
3248 self.start_transaction(cx);
3249 self.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
3250 self.backspace(&Backspace, cx);
3251 self.end_transaction(cx);
3252 }
3253
3254 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
3255 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3256 let mut selections = self.local_selections::<Point>(cx);
3257 {
3258 for selection in &mut selections {
3259 let head = selection.head().to_display_point(&display_map);
3260 let new_head = movement::line_end(&display_map, head, true);
3261 let anchor = new_head.to_point(&display_map);
3262 selection.start = anchor.clone();
3263 selection.end = anchor;
3264 selection.reversed = false;
3265 selection.goal = SelectionGoal::None;
3266 }
3267 }
3268 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3269 }
3270
3271 pub fn select_to_end_of_line(
3272 &mut self,
3273 SelectToEndOfLine(stop_at_soft_boundaries): &SelectToEndOfLine,
3274 cx: &mut ViewContext<Self>,
3275 ) {
3276 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3277 let mut selections = self.local_selections::<Point>(cx);
3278 for selection in &mut selections {
3279 let head = selection.head().to_display_point(&display_map);
3280 let new_head = movement::line_end(&display_map, head, *stop_at_soft_boundaries);
3281 selection.set_head(new_head.to_point(&display_map));
3282 selection.goal = SelectionGoal::None;
3283 }
3284 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3285 }
3286
3287 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
3288 self.start_transaction(cx);
3289 self.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3290 self.delete(&Delete, cx);
3291 self.end_transaction(cx);
3292 }
3293
3294 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
3295 self.start_transaction(cx);
3296 self.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3297 self.cut(&Cut, cx);
3298 self.end_transaction(cx);
3299 }
3300
3301 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
3302 if matches!(self.mode, EditorMode::SingleLine) {
3303 cx.propagate_action();
3304 return;
3305 }
3306
3307 let selection = Selection {
3308 id: post_inc(&mut self.next_selection_id),
3309 start: 0,
3310 end: 0,
3311 reversed: false,
3312 goal: SelectionGoal::None,
3313 };
3314 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3315 }
3316
3317 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
3318 let mut selection = self.local_selections::<Point>(cx).last().unwrap().clone();
3319 selection.set_head(Point::zero());
3320 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3321 }
3322
3323 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
3324 if matches!(self.mode, EditorMode::SingleLine) {
3325 cx.propagate_action();
3326 return;
3327 }
3328
3329 let cursor = self.buffer.read(cx).read(cx).len();
3330 let selection = Selection {
3331 id: post_inc(&mut self.next_selection_id),
3332 start: cursor,
3333 end: cursor,
3334 reversed: false,
3335 goal: SelectionGoal::None,
3336 };
3337 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3338 }
3339
3340 pub fn set_nav_history(&mut self, nav_history: Option<ItemNavHistory>) {
3341 self.nav_history = nav_history;
3342 }
3343
3344 pub fn nav_history(&self) -> Option<&ItemNavHistory> {
3345 self.nav_history.as_ref()
3346 }
3347
3348 fn push_to_nav_history(
3349 &self,
3350 position: Anchor,
3351 new_position: Option<Point>,
3352 cx: &mut ViewContext<Self>,
3353 ) {
3354 if let Some(nav_history) = &self.nav_history {
3355 let buffer = self.buffer.read(cx).read(cx);
3356 let offset = position.to_offset(&buffer);
3357 let point = position.to_point(&buffer);
3358 drop(buffer);
3359
3360 if let Some(new_position) = new_position {
3361 let row_delta = (new_position.row as i64 - point.row as i64).abs();
3362 if row_delta < MIN_NAVIGATION_HISTORY_ROW_DELTA {
3363 return;
3364 }
3365 }
3366
3367 nav_history.push(Some(NavigationData {
3368 anchor: position,
3369 offset,
3370 }));
3371 }
3372 }
3373
3374 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
3375 let mut selection = self.local_selections::<usize>(cx).first().unwrap().clone();
3376 selection.set_head(self.buffer.read(cx).read(cx).len());
3377 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3378 }
3379
3380 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
3381 let selection = Selection {
3382 id: post_inc(&mut self.next_selection_id),
3383 start: 0,
3384 end: self.buffer.read(cx).read(cx).len(),
3385 reversed: false,
3386 goal: SelectionGoal::None,
3387 };
3388 self.update_selections(vec![selection], None, cx);
3389 }
3390
3391 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
3392 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3393 let mut selections = self.local_selections::<Point>(cx);
3394 let max_point = display_map.buffer_snapshot.max_point();
3395 for selection in &mut selections {
3396 let rows = selection.spanned_rows(true, &display_map);
3397 selection.start = Point::new(rows.start, 0);
3398 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
3399 selection.reversed = false;
3400 }
3401 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3402 }
3403
3404 pub fn split_selection_into_lines(
3405 &mut self,
3406 _: &SplitSelectionIntoLines,
3407 cx: &mut ViewContext<Self>,
3408 ) {
3409 let mut to_unfold = Vec::new();
3410 let mut new_selections = Vec::new();
3411 {
3412 let selections = self.local_selections::<Point>(cx);
3413 let buffer = self.buffer.read(cx).read(cx);
3414 for selection in selections {
3415 for row in selection.start.row..selection.end.row {
3416 let cursor = Point::new(row, buffer.line_len(row));
3417 new_selections.push(Selection {
3418 id: post_inc(&mut self.next_selection_id),
3419 start: cursor,
3420 end: cursor,
3421 reversed: false,
3422 goal: SelectionGoal::None,
3423 });
3424 }
3425 new_selections.push(Selection {
3426 id: selection.id,
3427 start: selection.end,
3428 end: selection.end,
3429 reversed: false,
3430 goal: SelectionGoal::None,
3431 });
3432 to_unfold.push(selection.start..selection.end);
3433 }
3434 }
3435 self.unfold_ranges(to_unfold, cx);
3436 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3437 }
3438
3439 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
3440 self.add_selection(true, cx);
3441 }
3442
3443 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
3444 self.add_selection(false, cx);
3445 }
3446
3447 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
3448 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3449 let mut selections = self.local_selections::<Point>(cx);
3450 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
3451 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
3452 let range = oldest_selection.display_range(&display_map).sorted();
3453 let columns = cmp::min(range.start.column(), range.end.column())
3454 ..cmp::max(range.start.column(), range.end.column());
3455
3456 selections.clear();
3457 let mut stack = Vec::new();
3458 for row in range.start.row()..=range.end.row() {
3459 if let Some(selection) = self.build_columnar_selection(
3460 &display_map,
3461 row,
3462 &columns,
3463 oldest_selection.reversed,
3464 ) {
3465 stack.push(selection.id);
3466 selections.push(selection);
3467 }
3468 }
3469
3470 if above {
3471 stack.reverse();
3472 }
3473
3474 AddSelectionsState { above, stack }
3475 });
3476
3477 let last_added_selection = *state.stack.last().unwrap();
3478 let mut new_selections = Vec::new();
3479 if above == state.above {
3480 let end_row = if above {
3481 0
3482 } else {
3483 display_map.max_point().row()
3484 };
3485
3486 'outer: for selection in selections {
3487 if selection.id == last_added_selection {
3488 let range = selection.display_range(&display_map).sorted();
3489 debug_assert_eq!(range.start.row(), range.end.row());
3490 let mut row = range.start.row();
3491 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
3492 {
3493 start..end
3494 } else {
3495 cmp::min(range.start.column(), range.end.column())
3496 ..cmp::max(range.start.column(), range.end.column())
3497 };
3498
3499 while row != end_row {
3500 if above {
3501 row -= 1;
3502 } else {
3503 row += 1;
3504 }
3505
3506 if let Some(new_selection) = self.build_columnar_selection(
3507 &display_map,
3508 row,
3509 &columns,
3510 selection.reversed,
3511 ) {
3512 state.stack.push(new_selection.id);
3513 if above {
3514 new_selections.push(new_selection);
3515 new_selections.push(selection);
3516 } else {
3517 new_selections.push(selection);
3518 new_selections.push(new_selection);
3519 }
3520
3521 continue 'outer;
3522 }
3523 }
3524 }
3525
3526 new_selections.push(selection);
3527 }
3528 } else {
3529 new_selections = selections;
3530 new_selections.retain(|s| s.id != last_added_selection);
3531 state.stack.pop();
3532 }
3533
3534 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3535 if state.stack.len() > 1 {
3536 self.add_selections_state = Some(state);
3537 }
3538 }
3539
3540 pub fn select_next(&mut self, action: &SelectNext, cx: &mut ViewContext<Self>) {
3541 let replace_newest = action.0;
3542 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3543 let buffer = &display_map.buffer_snapshot;
3544 let mut selections = self.local_selections::<usize>(cx);
3545 if let Some(mut select_next_state) = self.select_next_state.take() {
3546 let query = &select_next_state.query;
3547 if !select_next_state.done {
3548 let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
3549 let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
3550 let mut next_selected_range = None;
3551
3552 let bytes_after_last_selection =
3553 buffer.bytes_in_range(last_selection.end..buffer.len());
3554 let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
3555 let query_matches = query
3556 .stream_find_iter(bytes_after_last_selection)
3557 .map(|result| (last_selection.end, result))
3558 .chain(
3559 query
3560 .stream_find_iter(bytes_before_first_selection)
3561 .map(|result| (0, result)),
3562 );
3563 for (start_offset, query_match) in query_matches {
3564 let query_match = query_match.unwrap(); // can only fail due to I/O
3565 let offset_range =
3566 start_offset + query_match.start()..start_offset + query_match.end();
3567 let display_range = offset_range.start.to_display_point(&display_map)
3568 ..offset_range.end.to_display_point(&display_map);
3569
3570 if !select_next_state.wordwise
3571 || (!movement::is_inside_word(&display_map, display_range.start)
3572 && !movement::is_inside_word(&display_map, display_range.end))
3573 {
3574 next_selected_range = Some(offset_range);
3575 break;
3576 }
3577 }
3578
3579 if let Some(next_selected_range) = next_selected_range {
3580 if replace_newest {
3581 if let Some(newest_id) =
3582 selections.iter().max_by_key(|s| s.id).map(|s| s.id)
3583 {
3584 selections.retain(|s| s.id != newest_id);
3585 }
3586 }
3587 selections.push(Selection {
3588 id: post_inc(&mut self.next_selection_id),
3589 start: next_selected_range.start,
3590 end: next_selected_range.end,
3591 reversed: false,
3592 goal: SelectionGoal::None,
3593 });
3594 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3595 } else {
3596 select_next_state.done = true;
3597 }
3598 }
3599
3600 self.select_next_state = Some(select_next_state);
3601 } else if selections.len() == 1 {
3602 let selection = selections.last_mut().unwrap();
3603 if selection.start == selection.end {
3604 let word_range = movement::surrounding_word(
3605 &display_map,
3606 selection.start.to_display_point(&display_map),
3607 );
3608 selection.start = word_range.start.to_offset(&display_map, Bias::Left);
3609 selection.end = word_range.end.to_offset(&display_map, Bias::Left);
3610 selection.goal = SelectionGoal::None;
3611 selection.reversed = false;
3612
3613 let query = buffer
3614 .text_for_range(selection.start..selection.end)
3615 .collect::<String>();
3616 let select_state = SelectNextState {
3617 query: AhoCorasick::new_auto_configured(&[query]),
3618 wordwise: true,
3619 done: false,
3620 };
3621 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3622 self.select_next_state = Some(select_state);
3623 } else {
3624 let query = buffer
3625 .text_for_range(selection.start..selection.end)
3626 .collect::<String>();
3627 self.select_next_state = Some(SelectNextState {
3628 query: AhoCorasick::new_auto_configured(&[query]),
3629 wordwise: false,
3630 done: false,
3631 });
3632 self.select_next(action, cx);
3633 }
3634 }
3635 }
3636
3637 pub fn toggle_comments(&mut self, _: &ToggleComments, cx: &mut ViewContext<Self>) {
3638 // Get the line comment prefix. Split its trailing whitespace into a separate string,
3639 // as that portion won't be used for detecting if a line is a comment.
3640 let full_comment_prefix =
3641 if let Some(prefix) = self.language(cx).and_then(|l| l.line_comment_prefix()) {
3642 prefix.to_string()
3643 } else {
3644 return;
3645 };
3646 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
3647 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
3648
3649 self.start_transaction(cx);
3650 let mut selections = self.local_selections::<Point>(cx);
3651 let mut all_selection_lines_are_comments = true;
3652 let mut edit_ranges = Vec::new();
3653 let mut last_toggled_row = None;
3654 self.buffer.update(cx, |buffer, cx| {
3655 for selection in &mut selections {
3656 edit_ranges.clear();
3657 let snapshot = buffer.snapshot(cx);
3658
3659 let end_row =
3660 if selection.end.row > selection.start.row && selection.end.column == 0 {
3661 selection.end.row
3662 } else {
3663 selection.end.row + 1
3664 };
3665
3666 for row in selection.start.row..end_row {
3667 // If multiple selections contain a given row, avoid processing that
3668 // row more than once.
3669 if last_toggled_row == Some(row) {
3670 continue;
3671 } else {
3672 last_toggled_row = Some(row);
3673 }
3674
3675 if snapshot.is_line_blank(row) {
3676 continue;
3677 }
3678
3679 let start = Point::new(row, snapshot.indent_column_for_line(row));
3680 let mut line_bytes = snapshot
3681 .bytes_in_range(start..snapshot.max_point())
3682 .flatten()
3683 .copied();
3684
3685 // If this line currently begins with the line comment prefix, then record
3686 // the range containing the prefix.
3687 if all_selection_lines_are_comments
3688 && line_bytes
3689 .by_ref()
3690 .take(comment_prefix.len())
3691 .eq(comment_prefix.bytes())
3692 {
3693 // Include any whitespace that matches the comment prefix.
3694 let matching_whitespace_len = line_bytes
3695 .zip(comment_prefix_whitespace.bytes())
3696 .take_while(|(a, b)| a == b)
3697 .count() as u32;
3698 let end = Point::new(
3699 row,
3700 start.column + comment_prefix.len() as u32 + matching_whitespace_len,
3701 );
3702 edit_ranges.push(start..end);
3703 }
3704 // If this line does not begin with the line comment prefix, then record
3705 // the position where the prefix should be inserted.
3706 else {
3707 all_selection_lines_are_comments = false;
3708 edit_ranges.push(start..start);
3709 }
3710 }
3711
3712 if !edit_ranges.is_empty() {
3713 if all_selection_lines_are_comments {
3714 buffer.edit(edit_ranges.iter().cloned(), "", cx);
3715 } else {
3716 let min_column = edit_ranges.iter().map(|r| r.start.column).min().unwrap();
3717 let edit_ranges = edit_ranges.iter().map(|range| {
3718 let position = Point::new(range.start.row, min_column);
3719 position..position
3720 });
3721 buffer.edit(edit_ranges, &full_comment_prefix, cx);
3722 }
3723 }
3724 }
3725 });
3726
3727 self.update_selections(
3728 self.local_selections::<usize>(cx),
3729 Some(Autoscroll::Fit),
3730 cx,
3731 );
3732 self.end_transaction(cx);
3733 }
3734
3735 pub fn select_larger_syntax_node(
3736 &mut self,
3737 _: &SelectLargerSyntaxNode,
3738 cx: &mut ViewContext<Self>,
3739 ) {
3740 let old_selections = self.local_selections::<usize>(cx).into_boxed_slice();
3741 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3742 let buffer = self.buffer.read(cx).snapshot(cx);
3743
3744 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
3745 let mut selected_larger_node = false;
3746 let new_selections = old_selections
3747 .iter()
3748 .map(|selection| {
3749 let old_range = selection.start..selection.end;
3750 let mut new_range = old_range.clone();
3751 while let Some(containing_range) =
3752 buffer.range_for_syntax_ancestor(new_range.clone())
3753 {
3754 new_range = containing_range;
3755 if !display_map.intersects_fold(new_range.start)
3756 && !display_map.intersects_fold(new_range.end)
3757 {
3758 break;
3759 }
3760 }
3761
3762 selected_larger_node |= new_range != old_range;
3763 Selection {
3764 id: selection.id,
3765 start: new_range.start,
3766 end: new_range.end,
3767 goal: SelectionGoal::None,
3768 reversed: selection.reversed,
3769 }
3770 })
3771 .collect::<Vec<_>>();
3772
3773 if selected_larger_node {
3774 stack.push(old_selections);
3775 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3776 }
3777 self.select_larger_syntax_node_stack = stack;
3778 }
3779
3780 pub fn select_smaller_syntax_node(
3781 &mut self,
3782 _: &SelectSmallerSyntaxNode,
3783 cx: &mut ViewContext<Self>,
3784 ) {
3785 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
3786 if let Some(selections) = stack.pop() {
3787 self.update_selections(selections.to_vec(), Some(Autoscroll::Fit), cx);
3788 }
3789 self.select_larger_syntax_node_stack = stack;
3790 }
3791
3792 pub fn move_to_enclosing_bracket(
3793 &mut self,
3794 _: &MoveToEnclosingBracket,
3795 cx: &mut ViewContext<Self>,
3796 ) {
3797 let mut selections = self.local_selections::<usize>(cx);
3798 let buffer = self.buffer.read(cx).snapshot(cx);
3799 for selection in &mut selections {
3800 if let Some((open_range, close_range)) =
3801 buffer.enclosing_bracket_ranges(selection.start..selection.end)
3802 {
3803 let close_range = close_range.to_inclusive();
3804 let destination = if close_range.contains(&selection.start)
3805 && close_range.contains(&selection.end)
3806 {
3807 open_range.end
3808 } else {
3809 *close_range.start()
3810 };
3811 selection.start = destination;
3812 selection.end = destination;
3813 }
3814 }
3815
3816 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3817 }
3818
3819 pub fn show_next_diagnostic(&mut self, _: &ShowNextDiagnostic, cx: &mut ViewContext<Self>) {
3820 let buffer = self.buffer.read(cx).snapshot(cx);
3821 let selection = self.newest_selection::<usize>(&buffer);
3822 let mut active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
3823 active_diagnostics
3824 .primary_range
3825 .to_offset(&buffer)
3826 .to_inclusive()
3827 });
3828 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
3829 if active_primary_range.contains(&selection.head()) {
3830 *active_primary_range.end()
3831 } else {
3832 selection.head()
3833 }
3834 } else {
3835 selection.head()
3836 };
3837
3838 loop {
3839 let next_group = buffer
3840 .diagnostics_in_range::<_, usize>(search_start..buffer.len())
3841 .find_map(|entry| {
3842 if entry.diagnostic.is_primary
3843 && !entry.range.is_empty()
3844 && Some(entry.range.end) != active_primary_range.as_ref().map(|r| *r.end())
3845 {
3846 Some((entry.range, entry.diagnostic.group_id))
3847 } else {
3848 None
3849 }
3850 });
3851
3852 if let Some((primary_range, group_id)) = next_group {
3853 self.activate_diagnostics(group_id, cx);
3854 self.update_selections(
3855 vec![Selection {
3856 id: selection.id,
3857 start: primary_range.start,
3858 end: primary_range.start,
3859 reversed: false,
3860 goal: SelectionGoal::None,
3861 }],
3862 Some(Autoscroll::Center),
3863 cx,
3864 );
3865 break;
3866 } else if search_start == 0 {
3867 break;
3868 } else {
3869 // Cycle around to the start of the buffer, potentially moving back to the start of
3870 // the currently active diagnostic.
3871 search_start = 0;
3872 active_primary_range.take();
3873 }
3874 }
3875 }
3876
3877 pub fn go_to_definition(
3878 workspace: &mut Workspace,
3879 _: &GoToDefinition,
3880 cx: &mut ViewContext<Workspace>,
3881 ) {
3882 let active_item = workspace.active_item(cx);
3883 let editor_handle = if let Some(editor) = active_item
3884 .as_ref()
3885 .and_then(|item| item.act_as::<Self>(cx))
3886 {
3887 editor
3888 } else {
3889 return;
3890 };
3891
3892 let editor = editor_handle.read(cx);
3893 let buffer = editor.buffer.read(cx);
3894 let head = editor.newest_selection::<usize>(&buffer.read(cx)).head();
3895 let (buffer, head) = editor.buffer.read(cx).text_anchor_for_position(head, cx);
3896 let definitions = workspace
3897 .project()
3898 .update(cx, |project, cx| project.definition(&buffer, head, cx));
3899 cx.spawn(|workspace, mut cx| async move {
3900 let definitions = definitions.await?;
3901 workspace.update(&mut cx, |workspace, cx| {
3902 for definition in definitions {
3903 let range = definition
3904 .target_range
3905 .to_offset(definition.target_buffer.read(cx));
3906 let target_editor_handle = workspace
3907 .open_item(BufferItemHandle(definition.target_buffer), cx)
3908 .downcast::<Self>()
3909 .unwrap();
3910
3911 target_editor_handle.update(cx, |target_editor, cx| {
3912 // When selecting a definition in a different buffer, disable the nav history
3913 // to avoid creating a history entry at the previous cursor location.
3914 let disabled_history = if editor_handle == target_editor_handle {
3915 None
3916 } else {
3917 target_editor.nav_history.take()
3918 };
3919 target_editor.select_ranges([range], Some(Autoscroll::Center), cx);
3920 if disabled_history.is_some() {
3921 target_editor.nav_history = disabled_history;
3922 }
3923 });
3924 }
3925 });
3926
3927 Ok::<(), anyhow::Error>(())
3928 })
3929 .detach_and_log_err(cx);
3930 }
3931
3932 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
3933 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
3934 let buffer = self.buffer.read(cx).snapshot(cx);
3935 let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
3936 let is_valid = buffer
3937 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone())
3938 .any(|entry| {
3939 entry.diagnostic.is_primary
3940 && !entry.range.is_empty()
3941 && entry.range.start == primary_range_start
3942 && entry.diagnostic.message == active_diagnostics.primary_message
3943 });
3944
3945 if is_valid != active_diagnostics.is_valid {
3946 active_diagnostics.is_valid = is_valid;
3947 let mut new_styles = HashMap::default();
3948 for (block_id, diagnostic) in &active_diagnostics.blocks {
3949 new_styles.insert(
3950 *block_id,
3951 diagnostic_block_renderer(
3952 diagnostic.clone(),
3953 is_valid,
3954 self.build_settings.clone(),
3955 ),
3956 );
3957 }
3958 self.display_map
3959 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
3960 }
3961 }
3962 }
3963
3964 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) {
3965 self.dismiss_diagnostics(cx);
3966 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
3967 let buffer = self.buffer.read(cx).snapshot(cx);
3968
3969 let mut primary_range = None;
3970 let mut primary_message = None;
3971 let mut group_end = Point::zero();
3972 let diagnostic_group = buffer
3973 .diagnostic_group::<Point>(group_id)
3974 .map(|entry| {
3975 if entry.range.end > group_end {
3976 group_end = entry.range.end;
3977 }
3978 if entry.diagnostic.is_primary {
3979 primary_range = Some(entry.range.clone());
3980 primary_message = Some(entry.diagnostic.message.clone());
3981 }
3982 entry
3983 })
3984 .collect::<Vec<_>>();
3985 let primary_range = primary_range.unwrap();
3986 let primary_message = primary_message.unwrap();
3987 let primary_range =
3988 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
3989
3990 let blocks = display_map
3991 .insert_blocks(
3992 diagnostic_group.iter().map(|entry| {
3993 let build_settings = self.build_settings.clone();
3994 let diagnostic = entry.diagnostic.clone();
3995 let message_height = diagnostic.message.lines().count() as u8;
3996
3997 BlockProperties {
3998 position: buffer.anchor_after(entry.range.start),
3999 height: message_height,
4000 render: diagnostic_block_renderer(diagnostic, true, build_settings),
4001 disposition: BlockDisposition::Below,
4002 }
4003 }),
4004 cx,
4005 )
4006 .into_iter()
4007 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
4008 .collect();
4009
4010 Some(ActiveDiagnosticGroup {
4011 primary_range,
4012 primary_message,
4013 blocks,
4014 is_valid: true,
4015 })
4016 });
4017 }
4018
4019 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
4020 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
4021 self.display_map.update(cx, |display_map, cx| {
4022 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
4023 });
4024 cx.notify();
4025 }
4026 }
4027
4028 fn build_columnar_selection(
4029 &mut self,
4030 display_map: &DisplaySnapshot,
4031 row: u32,
4032 columns: &Range<u32>,
4033 reversed: bool,
4034 ) -> Option<Selection<Point>> {
4035 let is_empty = columns.start == columns.end;
4036 let line_len = display_map.line_len(row);
4037 if columns.start < line_len || (is_empty && columns.start == line_len) {
4038 let start = DisplayPoint::new(row, columns.start);
4039 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
4040 Some(Selection {
4041 id: post_inc(&mut self.next_selection_id),
4042 start: start.to_point(display_map),
4043 end: end.to_point(display_map),
4044 reversed,
4045 goal: SelectionGoal::ColumnRange {
4046 start: columns.start,
4047 end: columns.end,
4048 },
4049 })
4050 } else {
4051 None
4052 }
4053 }
4054
4055 pub fn local_selections_in_range(
4056 &self,
4057 range: Range<Anchor>,
4058 display_map: &DisplaySnapshot,
4059 ) -> Vec<Selection<Point>> {
4060 let buffer = &display_map.buffer_snapshot;
4061
4062 let start_ix = match self
4063 .selections
4064 .binary_search_by(|probe| probe.end.cmp(&range.start, &buffer).unwrap())
4065 {
4066 Ok(ix) | Err(ix) => ix,
4067 };
4068 let end_ix = match self
4069 .selections
4070 .binary_search_by(|probe| probe.start.cmp(&range.end, &buffer).unwrap())
4071 {
4072 Ok(ix) => ix + 1,
4073 Err(ix) => ix,
4074 };
4075
4076 fn point_selection(
4077 selection: &Selection<Anchor>,
4078 buffer: &MultiBufferSnapshot,
4079 ) -> Selection<Point> {
4080 let start = selection.start.to_point(&buffer);
4081 let end = selection.end.to_point(&buffer);
4082 Selection {
4083 id: selection.id,
4084 start,
4085 end,
4086 reversed: selection.reversed,
4087 goal: selection.goal,
4088 }
4089 }
4090
4091 self.selections[start_ix..end_ix]
4092 .iter()
4093 .chain(
4094 self.pending_selection
4095 .as_ref()
4096 .map(|pending| &pending.selection),
4097 )
4098 .map(|s| point_selection(s, &buffer))
4099 .collect()
4100 }
4101
4102 pub fn local_selections<'a, D>(&self, cx: &'a AppContext) -> Vec<Selection<D>>
4103 where
4104 D: 'a + TextDimension + Ord + Sub<D, Output = D>,
4105 {
4106 let buffer = self.buffer.read(cx).snapshot(cx);
4107 let mut selections = self
4108 .resolve_selections::<D, _>(self.selections.iter(), &buffer)
4109 .peekable();
4110
4111 let mut pending_selection = self.pending_selection::<D>(&buffer);
4112
4113 iter::from_fn(move || {
4114 if let Some(pending) = pending_selection.as_mut() {
4115 while let Some(next_selection) = selections.peek() {
4116 if pending.start <= next_selection.end && pending.end >= next_selection.start {
4117 let next_selection = selections.next().unwrap();
4118 if next_selection.start < pending.start {
4119 pending.start = next_selection.start;
4120 }
4121 if next_selection.end > pending.end {
4122 pending.end = next_selection.end;
4123 }
4124 } else if next_selection.end < pending.start {
4125 return selections.next();
4126 } else {
4127 break;
4128 }
4129 }
4130
4131 pending_selection.take()
4132 } else {
4133 selections.next()
4134 }
4135 })
4136 .collect()
4137 }
4138
4139 fn resolve_selections<'a, D, I>(
4140 &self,
4141 selections: I,
4142 snapshot: &MultiBufferSnapshot,
4143 ) -> impl 'a + Iterator<Item = Selection<D>>
4144 where
4145 D: TextDimension + Ord + Sub<D, Output = D>,
4146 I: 'a + IntoIterator<Item = &'a Selection<Anchor>>,
4147 {
4148 let (to_summarize, selections) = selections.into_iter().tee();
4149 let mut summaries = snapshot
4150 .summaries_for_anchors::<D, _>(to_summarize.flat_map(|s| [&s.start, &s.end]))
4151 .into_iter();
4152 selections.map(move |s| Selection {
4153 id: s.id,
4154 start: summaries.next().unwrap(),
4155 end: summaries.next().unwrap(),
4156 reversed: s.reversed,
4157 goal: s.goal,
4158 })
4159 }
4160
4161 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4162 &self,
4163 snapshot: &MultiBufferSnapshot,
4164 ) -> Option<Selection<D>> {
4165 self.pending_selection
4166 .as_ref()
4167 .map(|pending| self.resolve_selection(&pending.selection, &snapshot))
4168 }
4169
4170 fn resolve_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4171 &self,
4172 selection: &Selection<Anchor>,
4173 buffer: &MultiBufferSnapshot,
4174 ) -> Selection<D> {
4175 Selection {
4176 id: selection.id,
4177 start: selection.start.summary::<D>(&buffer),
4178 end: selection.end.summary::<D>(&buffer),
4179 reversed: selection.reversed,
4180 goal: selection.goal,
4181 }
4182 }
4183
4184 fn selection_count<'a>(&self) -> usize {
4185 let mut count = self.selections.len();
4186 if self.pending_selection.is_some() {
4187 count += 1;
4188 }
4189 count
4190 }
4191
4192 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4193 &self,
4194 snapshot: &MultiBufferSnapshot,
4195 ) -> Selection<D> {
4196 self.selections
4197 .iter()
4198 .min_by_key(|s| s.id)
4199 .map(|selection| self.resolve_selection(selection, snapshot))
4200 .or_else(|| self.pending_selection(snapshot))
4201 .unwrap()
4202 }
4203
4204 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4205 &self,
4206 snapshot: &MultiBufferSnapshot,
4207 ) -> Selection<D> {
4208 self.resolve_selection(self.newest_anchor_selection().unwrap(), snapshot)
4209 }
4210
4211 pub fn newest_anchor_selection(&self) -> Option<&Selection<Anchor>> {
4212 self.pending_selection
4213 .as_ref()
4214 .map(|s| &s.selection)
4215 .or_else(|| self.selections.iter().max_by_key(|s| s.id))
4216 }
4217
4218 pub fn update_selections<T>(
4219 &mut self,
4220 mut selections: Vec<Selection<T>>,
4221 autoscroll: Option<Autoscroll>,
4222 cx: &mut ViewContext<Self>,
4223 ) where
4224 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
4225 {
4226 let buffer = self.buffer.read(cx).snapshot(cx);
4227 selections.sort_unstable_by_key(|s| s.start);
4228
4229 // Merge overlapping selections.
4230 let mut i = 1;
4231 while i < selections.len() {
4232 if selections[i - 1].end >= selections[i].start {
4233 let removed = selections.remove(i);
4234 if removed.start < selections[i - 1].start {
4235 selections[i - 1].start = removed.start;
4236 }
4237 if removed.end > selections[i - 1].end {
4238 selections[i - 1].end = removed.end;
4239 }
4240 } else {
4241 i += 1;
4242 }
4243 }
4244
4245 if let Some(autoscroll) = autoscroll {
4246 self.request_autoscroll(autoscroll, cx);
4247 }
4248
4249 self.set_selections(
4250 Arc::from_iter(selections.into_iter().map(|selection| {
4251 let end_bias = if selection.end > selection.start {
4252 Bias::Left
4253 } else {
4254 Bias::Right
4255 };
4256 Selection {
4257 id: selection.id,
4258 start: buffer.anchor_after(selection.start),
4259 end: buffer.anchor_at(selection.end, end_bias),
4260 reversed: selection.reversed,
4261 goal: selection.goal,
4262 }
4263 })),
4264 cx,
4265 );
4266 }
4267
4268 /// Compute new ranges for any selections that were located in excerpts that have
4269 /// since been removed.
4270 ///
4271 /// Returns a `HashMap` indicating which selections whose former head position
4272 /// was no longer present. The keys of the map are selection ids. The values are
4273 /// the id of the new excerpt where the head of the selection has been moved.
4274 pub fn refresh_selections(&mut self, cx: &mut ViewContext<Self>) -> HashMap<usize, ExcerptId> {
4275 let snapshot = self.buffer.read(cx).read(cx);
4276 let anchors_with_status = snapshot.refresh_anchors(
4277 self.selections
4278 .iter()
4279 .flat_map(|selection| [&selection.start, &selection.end]),
4280 );
4281 let offsets =
4282 snapshot.summaries_for_anchors::<usize, _>(anchors_with_status.iter().map(|a| &a.1));
4283 let offsets = offsets.chunks(2);
4284 let statuses = anchors_with_status
4285 .chunks(2)
4286 .map(|a| (a[0].0 / 2, a[0].2, a[1].2));
4287
4288 let mut selections_with_lost_position = HashMap::default();
4289 let new_selections = offsets
4290 .zip(statuses)
4291 .map(|(offsets, (selection_ix, kept_start, kept_end))| {
4292 let selection = &self.selections[selection_ix];
4293 let kept_head = if selection.reversed {
4294 kept_start
4295 } else {
4296 kept_end
4297 };
4298 if !kept_head {
4299 selections_with_lost_position
4300 .insert(selection.id, selection.head().excerpt_id.clone());
4301 }
4302
4303 Selection {
4304 id: selection.id,
4305 start: offsets[0],
4306 end: offsets[1],
4307 reversed: selection.reversed,
4308 goal: selection.goal,
4309 }
4310 })
4311 .collect();
4312 drop(snapshot);
4313 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
4314 selections_with_lost_position
4315 }
4316
4317 fn set_selections(&mut self, selections: Arc<[Selection<Anchor>]>, cx: &mut ViewContext<Self>) {
4318 let old_cursor_position = self.newest_anchor_selection().map(|s| s.head());
4319 self.selections = selections;
4320 if self.focused {
4321 self.buffer.update(cx, |buffer, cx| {
4322 buffer.set_active_selections(&self.selections, cx)
4323 });
4324 }
4325
4326 let buffer = self.buffer.read(cx).snapshot(cx);
4327 self.pending_selection = None;
4328 self.add_selections_state = None;
4329 self.select_next_state = None;
4330 self.select_larger_syntax_node_stack.clear();
4331 self.autoclose_stack.invalidate(&self.selections, &buffer);
4332 self.snippet_stack.invalidate(&self.selections, &buffer);
4333
4334 let new_cursor_position = self
4335 .selections
4336 .iter()
4337 .max_by_key(|s| s.id)
4338 .map(|s| s.head());
4339 if let Some(old_cursor_position) = old_cursor_position {
4340 if let Some(new_cursor_position) = new_cursor_position.as_ref() {
4341 self.push_to_nav_history(
4342 old_cursor_position,
4343 Some(new_cursor_position.to_point(&buffer)),
4344 cx,
4345 );
4346 }
4347 }
4348
4349 let completion_menu = match self.context_menu.as_mut() {
4350 Some(ContextMenu::Completions(menu)) => Some(menu),
4351 _ => {
4352 self.context_menu.take();
4353 None
4354 }
4355 };
4356
4357 if let Some((completion_menu, cursor_position)) = completion_menu.zip(new_cursor_position) {
4358 let cursor_position = cursor_position.to_offset(&buffer);
4359 let (word_range, kind) =
4360 buffer.surrounding_word(completion_menu.initial_position.clone());
4361 if kind == Some(CharKind::Word) && word_range.to_inclusive().contains(&cursor_position)
4362 {
4363 let query = Self::completion_query(&buffer, cursor_position);
4364 cx.background()
4365 .block(completion_menu.filter(query.as_deref(), cx.background().clone()));
4366 self.show_completions(&ShowCompletions, cx);
4367 } else {
4368 self.hide_context_menu(cx);
4369 }
4370 }
4371
4372 self.pause_cursor_blinking(cx);
4373 cx.emit(Event::SelectionsChanged);
4374 }
4375
4376 pub fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
4377 self.autoscroll_request = Some(autoscroll);
4378 cx.notify();
4379 }
4380
4381 fn start_transaction(&mut self, cx: &mut ViewContext<Self>) {
4382 self.start_transaction_at(Instant::now(), cx);
4383 }
4384
4385 fn start_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
4386 self.end_selection(cx);
4387 if let Some(tx_id) = self
4388 .buffer
4389 .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
4390 {
4391 self.selection_history
4392 .insert(tx_id, (self.selections.clone(), None));
4393 }
4394 }
4395
4396 fn end_transaction(&mut self, cx: &mut ViewContext<Self>) {
4397 self.end_transaction_at(Instant::now(), cx);
4398 }
4399
4400 fn end_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
4401 if let Some(tx_id) = self
4402 .buffer
4403 .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
4404 {
4405 if let Some((_, end_selections)) = self.selection_history.get_mut(&tx_id) {
4406 *end_selections = Some(self.selections.clone());
4407 } else {
4408 log::error!("unexpectedly ended a transaction that wasn't started by this editor");
4409 }
4410 }
4411 }
4412
4413 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
4414 log::info!("Editor::page_up");
4415 }
4416
4417 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
4418 log::info!("Editor::page_down");
4419 }
4420
4421 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
4422 let mut fold_ranges = Vec::new();
4423
4424 let selections = self.local_selections::<Point>(cx);
4425 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4426 for selection in selections {
4427 let range = selection.display_range(&display_map).sorted();
4428 let buffer_start_row = range.start.to_point(&display_map).row;
4429
4430 for row in (0..=range.end.row()).rev() {
4431 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
4432 let fold_range = self.foldable_range_for_line(&display_map, row);
4433 if fold_range.end.row >= buffer_start_row {
4434 fold_ranges.push(fold_range);
4435 if row <= range.start.row() {
4436 break;
4437 }
4438 }
4439 }
4440 }
4441 }
4442
4443 self.fold_ranges(fold_ranges, cx);
4444 }
4445
4446 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
4447 let selections = self.local_selections::<Point>(cx);
4448 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4449 let buffer = &display_map.buffer_snapshot;
4450 let ranges = selections
4451 .iter()
4452 .map(|s| {
4453 let range = s.display_range(&display_map).sorted();
4454 let mut start = range.start.to_point(&display_map);
4455 let mut end = range.end.to_point(&display_map);
4456 start.column = 0;
4457 end.column = buffer.line_len(end.row);
4458 start..end
4459 })
4460 .collect::<Vec<_>>();
4461 self.unfold_ranges(ranges, cx);
4462 }
4463
4464 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
4465 let max_point = display_map.max_point();
4466 if display_row >= max_point.row() {
4467 false
4468 } else {
4469 let (start_indent, is_blank) = display_map.line_indent(display_row);
4470 if is_blank {
4471 false
4472 } else {
4473 for display_row in display_row + 1..=max_point.row() {
4474 let (indent, is_blank) = display_map.line_indent(display_row);
4475 if !is_blank {
4476 return indent > start_indent;
4477 }
4478 }
4479 false
4480 }
4481 }
4482 }
4483
4484 fn foldable_range_for_line(
4485 &self,
4486 display_map: &DisplaySnapshot,
4487 start_row: u32,
4488 ) -> Range<Point> {
4489 let max_point = display_map.max_point();
4490
4491 let (start_indent, _) = display_map.line_indent(start_row);
4492 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
4493 let mut end = None;
4494 for row in start_row + 1..=max_point.row() {
4495 let (indent, is_blank) = display_map.line_indent(row);
4496 if !is_blank && indent <= start_indent {
4497 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
4498 break;
4499 }
4500 }
4501
4502 let end = end.unwrap_or(max_point);
4503 return start.to_point(display_map)..end.to_point(display_map);
4504 }
4505
4506 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
4507 let selections = self.local_selections::<Point>(cx);
4508 let ranges = selections.into_iter().map(|s| s.start..s.end);
4509 self.fold_ranges(ranges, cx);
4510 }
4511
4512 fn fold_ranges<T: ToOffset>(
4513 &mut self,
4514 ranges: impl IntoIterator<Item = Range<T>>,
4515 cx: &mut ViewContext<Self>,
4516 ) {
4517 let mut ranges = ranges.into_iter().peekable();
4518 if ranges.peek().is_some() {
4519 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
4520 self.request_autoscroll(Autoscroll::Fit, cx);
4521 cx.notify();
4522 }
4523 }
4524
4525 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
4526 if !ranges.is_empty() {
4527 self.display_map
4528 .update(cx, |map, cx| map.unfold(ranges, cx));
4529 self.request_autoscroll(Autoscroll::Fit, cx);
4530 cx.notify();
4531 }
4532 }
4533
4534 pub fn insert_blocks(
4535 &mut self,
4536 blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
4537 cx: &mut ViewContext<Self>,
4538 ) -> Vec<BlockId> {
4539 let blocks = self
4540 .display_map
4541 .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
4542 self.request_autoscroll(Autoscroll::Fit, cx);
4543 blocks
4544 }
4545
4546 pub fn replace_blocks(
4547 &mut self,
4548 blocks: HashMap<BlockId, RenderBlock>,
4549 cx: &mut ViewContext<Self>,
4550 ) {
4551 self.display_map
4552 .update(cx, |display_map, _| display_map.replace_blocks(blocks));
4553 self.request_autoscroll(Autoscroll::Fit, cx);
4554 }
4555
4556 pub fn remove_blocks(&mut self, block_ids: HashSet<BlockId>, cx: &mut ViewContext<Self>) {
4557 self.display_map.update(cx, |display_map, cx| {
4558 display_map.remove_blocks(block_ids, cx)
4559 });
4560 }
4561
4562 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
4563 self.display_map
4564 .update(cx, |map, cx| map.snapshot(cx))
4565 .longest_row()
4566 }
4567
4568 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
4569 self.display_map
4570 .update(cx, |map, cx| map.snapshot(cx))
4571 .max_point()
4572 }
4573
4574 pub fn text(&self, cx: &AppContext) -> String {
4575 self.buffer.read(cx).read(cx).text()
4576 }
4577
4578 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
4579 self.display_map
4580 .update(cx, |map, cx| map.snapshot(cx))
4581 .text()
4582 }
4583
4584 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
4585 self.display_map
4586 .update(cx, |map, cx| map.set_wrap_width(width, cx))
4587 }
4588
4589 pub fn set_highlighted_rows(&mut self, rows: Option<Range<u32>>) {
4590 self.highlighted_rows = rows;
4591 }
4592
4593 pub fn highlighted_rows(&self) -> Option<Range<u32>> {
4594 self.highlighted_rows.clone()
4595 }
4596
4597 pub fn highlight_ranges<T: 'static>(
4598 &mut self,
4599 ranges: Vec<Range<Anchor>>,
4600 color: Color,
4601 cx: &mut ViewContext<Self>,
4602 ) {
4603 self.highlighted_ranges
4604 .insert(TypeId::of::<T>(), (color, ranges));
4605 cx.notify();
4606 }
4607
4608 pub fn clear_highlighted_ranges<T: 'static>(&mut self, cx: &mut ViewContext<Self>) {
4609 self.highlighted_ranges.remove(&TypeId::of::<T>());
4610 cx.notify();
4611 }
4612
4613 #[cfg(feature = "test-support")]
4614 pub fn all_highlighted_ranges(
4615 &mut self,
4616 cx: &mut ViewContext<Self>,
4617 ) -> Vec<(Range<DisplayPoint>, Color)> {
4618 let snapshot = self.snapshot(cx);
4619 let buffer = &snapshot.buffer_snapshot;
4620 let start = buffer.anchor_before(0);
4621 let end = buffer.anchor_after(buffer.len());
4622 self.highlighted_ranges_in_range(start..end, &snapshot)
4623 }
4624
4625 pub fn highlighted_ranges_for_type<T: 'static>(&self) -> Option<(Color, &[Range<Anchor>])> {
4626 self.highlighted_ranges
4627 .get(&TypeId::of::<T>())
4628 .map(|(color, ranges)| (*color, ranges.as_slice()))
4629 }
4630
4631 pub fn highlighted_ranges_in_range(
4632 &self,
4633 search_range: Range<Anchor>,
4634 display_snapshot: &DisplaySnapshot,
4635 ) -> Vec<(Range<DisplayPoint>, Color)> {
4636 let mut results = Vec::new();
4637 let buffer = &display_snapshot.buffer_snapshot;
4638 for (color, ranges) in self.highlighted_ranges.values() {
4639 let start_ix = match ranges.binary_search_by(|probe| {
4640 let cmp = probe.end.cmp(&search_range.start, &buffer).unwrap();
4641 if cmp.is_gt() {
4642 Ordering::Greater
4643 } else {
4644 Ordering::Less
4645 }
4646 }) {
4647 Ok(i) | Err(i) => i,
4648 };
4649 for range in &ranges[start_ix..] {
4650 if range.start.cmp(&search_range.end, &buffer).unwrap().is_ge() {
4651 break;
4652 }
4653 let start = range
4654 .start
4655 .to_point(buffer)
4656 .to_display_point(display_snapshot);
4657 let end = range
4658 .end
4659 .to_point(buffer)
4660 .to_display_point(display_snapshot);
4661 results.push((start..end, *color))
4662 }
4663 }
4664 results
4665 }
4666
4667 fn next_blink_epoch(&mut self) -> usize {
4668 self.blink_epoch += 1;
4669 self.blink_epoch
4670 }
4671
4672 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
4673 if !self.focused {
4674 return;
4675 }
4676
4677 self.show_local_cursors = true;
4678 cx.notify();
4679
4680 let epoch = self.next_blink_epoch();
4681 cx.spawn(|this, mut cx| {
4682 let this = this.downgrade();
4683 async move {
4684 Timer::after(CURSOR_BLINK_INTERVAL).await;
4685 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
4686 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
4687 }
4688 }
4689 })
4690 .detach();
4691 }
4692
4693 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
4694 if epoch == self.blink_epoch {
4695 self.blinking_paused = false;
4696 self.blink_cursors(epoch, cx);
4697 }
4698 }
4699
4700 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
4701 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
4702 self.show_local_cursors = !self.show_local_cursors;
4703 cx.notify();
4704
4705 let epoch = self.next_blink_epoch();
4706 cx.spawn(|this, mut cx| {
4707 let this = this.downgrade();
4708 async move {
4709 Timer::after(CURSOR_BLINK_INTERVAL).await;
4710 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
4711 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
4712 }
4713 }
4714 })
4715 .detach();
4716 }
4717 }
4718
4719 pub fn show_local_cursors(&self) -> bool {
4720 self.show_local_cursors
4721 }
4722
4723 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
4724 self.refresh_active_diagnostics(cx);
4725 cx.notify();
4726 }
4727
4728 fn on_buffer_event(
4729 &mut self,
4730 _: ModelHandle<MultiBuffer>,
4731 event: &language::Event,
4732 cx: &mut ViewContext<Self>,
4733 ) {
4734 match event {
4735 language::Event::Edited => cx.emit(Event::Edited),
4736 language::Event::Dirtied => cx.emit(Event::Dirtied),
4737 language::Event::Saved => cx.emit(Event::Saved),
4738 language::Event::FileHandleChanged => cx.emit(Event::TitleChanged),
4739 language::Event::Reloaded => cx.emit(Event::TitleChanged),
4740 language::Event::Closed => cx.emit(Event::Closed),
4741 _ => {}
4742 }
4743 }
4744
4745 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
4746 cx.notify();
4747 }
4748}
4749
4750impl EditorSnapshot {
4751 pub fn is_focused(&self) -> bool {
4752 self.is_focused
4753 }
4754
4755 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
4756 self.placeholder_text.as_ref()
4757 }
4758
4759 pub fn scroll_position(&self) -> Vector2F {
4760 compute_scroll_position(
4761 &self.display_snapshot,
4762 self.scroll_position,
4763 &self.scroll_top_anchor,
4764 )
4765 }
4766}
4767
4768impl Deref for EditorSnapshot {
4769 type Target = DisplaySnapshot;
4770
4771 fn deref(&self) -> &Self::Target {
4772 &self.display_snapshot
4773 }
4774}
4775
4776impl EditorSettings {
4777 #[cfg(any(test, feature = "test-support"))]
4778 pub fn test(cx: &AppContext) -> Self {
4779 use theme::{ContainedLabel, ContainedText, DiagnosticHeader, DiagnosticPathHeader};
4780
4781 Self {
4782 tab_size: 4,
4783 soft_wrap: SoftWrap::None,
4784 style: {
4785 let font_cache: &gpui::FontCache = cx.font_cache();
4786 let font_family_name = Arc::from("Monaco");
4787 let font_properties = Default::default();
4788 let font_family_id = font_cache.load_family(&[&font_family_name]).unwrap();
4789 let font_id = font_cache
4790 .select_font(font_family_id, &font_properties)
4791 .unwrap();
4792 let text = gpui::fonts::TextStyle {
4793 font_family_name,
4794 font_family_id,
4795 font_id,
4796 font_size: 14.,
4797 color: gpui::color::Color::from_u32(0xff0000ff),
4798 font_properties,
4799 underline: None,
4800 };
4801 let default_diagnostic_style = DiagnosticStyle {
4802 message: text.clone().into(),
4803 header: Default::default(),
4804 text_scale_factor: 1.,
4805 };
4806 EditorStyle {
4807 text: text.clone(),
4808 placeholder_text: None,
4809 background: Default::default(),
4810 gutter_background: Default::default(),
4811 gutter_padding_factor: 2.,
4812 active_line_background: Default::default(),
4813 highlighted_line_background: Default::default(),
4814 line_number: Default::default(),
4815 line_number_active: Default::default(),
4816 selection: Default::default(),
4817 guest_selections: Default::default(),
4818 syntax: Default::default(),
4819 diagnostic_path_header: DiagnosticPathHeader {
4820 container: Default::default(),
4821 filename: ContainedText {
4822 container: Default::default(),
4823 text: text.clone(),
4824 },
4825 path: ContainedText {
4826 container: Default::default(),
4827 text: text.clone(),
4828 },
4829 text_scale_factor: 1.,
4830 },
4831 diagnostic_header: DiagnosticHeader {
4832 container: Default::default(),
4833 message: ContainedLabel {
4834 container: Default::default(),
4835 label: text.clone().into(),
4836 },
4837 code: ContainedText {
4838 container: Default::default(),
4839 text: text.clone(),
4840 },
4841 icon_width_factor: 1.,
4842 text_scale_factor: 1.,
4843 },
4844 error_diagnostic: default_diagnostic_style.clone(),
4845 invalid_error_diagnostic: default_diagnostic_style.clone(),
4846 warning_diagnostic: default_diagnostic_style.clone(),
4847 invalid_warning_diagnostic: default_diagnostic_style.clone(),
4848 information_diagnostic: default_diagnostic_style.clone(),
4849 invalid_information_diagnostic: default_diagnostic_style.clone(),
4850 hint_diagnostic: default_diagnostic_style.clone(),
4851 invalid_hint_diagnostic: default_diagnostic_style.clone(),
4852 autocomplete: Default::default(),
4853 }
4854 },
4855 }
4856 }
4857}
4858
4859fn compute_scroll_position(
4860 snapshot: &DisplaySnapshot,
4861 mut scroll_position: Vector2F,
4862 scroll_top_anchor: &Option<Anchor>,
4863) -> Vector2F {
4864 if let Some(anchor) = scroll_top_anchor {
4865 let scroll_top = anchor.to_display_point(snapshot).row() as f32;
4866 scroll_position.set_y(scroll_top + scroll_position.y());
4867 } else {
4868 scroll_position.set_y(0.);
4869 }
4870 scroll_position
4871}
4872
4873#[derive(Copy, Clone)]
4874pub enum Event {
4875 Activate,
4876 Edited,
4877 Blurred,
4878 Dirtied,
4879 Saved,
4880 TitleChanged,
4881 SelectionsChanged,
4882 Closed,
4883}
4884
4885impl Entity for Editor {
4886 type Event = Event;
4887}
4888
4889impl View for Editor {
4890 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
4891 let settings = (self.build_settings)(cx);
4892 self.display_map.update(cx, |map, cx| {
4893 map.set_font(
4894 settings.style.text.font_id,
4895 settings.style.text.font_size,
4896 cx,
4897 )
4898 });
4899 EditorElement::new(self.handle.clone(), settings).boxed()
4900 }
4901
4902 fn ui_name() -> &'static str {
4903 "Editor"
4904 }
4905
4906 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
4907 self.focused = true;
4908 self.blink_cursors(self.blink_epoch, cx);
4909 self.buffer.update(cx, |buffer, cx| {
4910 buffer.finalize_last_transaction(cx);
4911 buffer.set_active_selections(&self.selections, cx)
4912 });
4913 }
4914
4915 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
4916 self.focused = false;
4917 self.show_local_cursors = false;
4918 self.buffer
4919 .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
4920 self.hide_context_menu(cx);
4921 cx.emit(Event::Blurred);
4922 cx.notify();
4923 }
4924
4925 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
4926 let mut cx = Self::default_keymap_context();
4927 let mode = match self.mode {
4928 EditorMode::SingleLine => "single_line",
4929 EditorMode::AutoHeight { .. } => "auto_height",
4930 EditorMode::Full => "full",
4931 };
4932 cx.map.insert("mode".into(), mode.into());
4933 match self.context_menu.as_ref() {
4934 Some(ContextMenu::Completions(_)) => {
4935 cx.set.insert("showing_completions".into());
4936 }
4937 Some(ContextMenu::CodeActions(_)) => {
4938 cx.set.insert("showing_code_actions".into());
4939 }
4940 None => {}
4941 }
4942 cx
4943 }
4944}
4945
4946impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
4947 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
4948 let start = self.start.to_point(buffer);
4949 let end = self.end.to_point(buffer);
4950 if self.reversed {
4951 end..start
4952 } else {
4953 start..end
4954 }
4955 }
4956
4957 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
4958 let start = self.start.to_offset(buffer);
4959 let end = self.end.to_offset(buffer);
4960 if self.reversed {
4961 end..start
4962 } else {
4963 start..end
4964 }
4965 }
4966
4967 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
4968 let start = self
4969 .start
4970 .to_point(&map.buffer_snapshot)
4971 .to_display_point(map);
4972 let end = self
4973 .end
4974 .to_point(&map.buffer_snapshot)
4975 .to_display_point(map);
4976 if self.reversed {
4977 end..start
4978 } else {
4979 start..end
4980 }
4981 }
4982
4983 fn spanned_rows(
4984 &self,
4985 include_end_if_at_line_start: bool,
4986 map: &DisplaySnapshot,
4987 ) -> Range<u32> {
4988 let start = self.start.to_point(&map.buffer_snapshot);
4989 let mut end = self.end.to_point(&map.buffer_snapshot);
4990 if !include_end_if_at_line_start && start.row != end.row && end.column == 0 {
4991 end.row -= 1;
4992 }
4993
4994 let buffer_start = map.prev_line_boundary(start).0;
4995 let buffer_end = map.next_line_boundary(end).0;
4996 buffer_start.row..buffer_end.row + 1
4997 }
4998}
4999
5000impl<T: InvalidationRegion> InvalidationStack<T> {
5001 fn invalidate<S>(&mut self, selections: &[Selection<S>], buffer: &MultiBufferSnapshot)
5002 where
5003 S: Clone + ToOffset,
5004 {
5005 while let Some(region) = self.last() {
5006 let all_selections_inside_invalidation_ranges =
5007 if selections.len() == region.ranges().len() {
5008 selections
5009 .iter()
5010 .zip(region.ranges().iter().map(|r| r.to_offset(&buffer)))
5011 .all(|(selection, invalidation_range)| {
5012 let head = selection.head().to_offset(&buffer);
5013 invalidation_range.start <= head && invalidation_range.end >= head
5014 })
5015 } else {
5016 false
5017 };
5018
5019 if all_selections_inside_invalidation_ranges {
5020 break;
5021 } else {
5022 self.pop();
5023 }
5024 }
5025 }
5026}
5027
5028impl<T> Default for InvalidationStack<T> {
5029 fn default() -> Self {
5030 Self(Default::default())
5031 }
5032}
5033
5034impl<T> Deref for InvalidationStack<T> {
5035 type Target = Vec<T>;
5036
5037 fn deref(&self) -> &Self::Target {
5038 &self.0
5039 }
5040}
5041
5042impl<T> DerefMut for InvalidationStack<T> {
5043 fn deref_mut(&mut self) -> &mut Self::Target {
5044 &mut self.0
5045 }
5046}
5047
5048impl InvalidationRegion for BracketPairState {
5049 fn ranges(&self) -> &[Range<Anchor>] {
5050 &self.ranges
5051 }
5052}
5053
5054impl InvalidationRegion for SnippetState {
5055 fn ranges(&self) -> &[Range<Anchor>] {
5056 &self.ranges[self.active_index]
5057 }
5058}
5059
5060pub fn diagnostic_block_renderer(
5061 diagnostic: Diagnostic,
5062 is_valid: bool,
5063 build_settings: BuildSettings,
5064) -> RenderBlock {
5065 let mut highlighted_lines = Vec::new();
5066 for line in diagnostic.message.lines() {
5067 highlighted_lines.push(highlight_diagnostic_message(line));
5068 }
5069
5070 Arc::new(move |cx: &BlockContext| {
5071 let settings = build_settings(cx);
5072 let style = diagnostic_style(diagnostic.severity, is_valid, &settings.style);
5073 let font_size = (style.text_scale_factor * settings.style.text.font_size).round();
5074 Flex::column()
5075 .with_children(highlighted_lines.iter().map(|(line, highlights)| {
5076 Label::new(
5077 line.clone(),
5078 style.message.clone().with_font_size(font_size),
5079 )
5080 .with_highlights(highlights.clone())
5081 .contained()
5082 .with_margin_left(cx.anchor_x)
5083 .boxed()
5084 }))
5085 .aligned()
5086 .left()
5087 .boxed()
5088 })
5089}
5090
5091pub fn highlight_diagnostic_message(message: &str) -> (String, Vec<usize>) {
5092 let mut message_without_backticks = String::new();
5093 let mut prev_offset = 0;
5094 let mut inside_block = false;
5095 let mut highlights = Vec::new();
5096 for (match_ix, (offset, _)) in message
5097 .match_indices('`')
5098 .chain([(message.len(), "")])
5099 .enumerate()
5100 {
5101 message_without_backticks.push_str(&message[prev_offset..offset]);
5102 if inside_block {
5103 highlights.extend(prev_offset - match_ix..offset - match_ix);
5104 }
5105
5106 inside_block = !inside_block;
5107 prev_offset = offset + 1;
5108 }
5109
5110 (message_without_backticks, highlights)
5111}
5112
5113pub fn diagnostic_style(
5114 severity: DiagnosticSeverity,
5115 valid: bool,
5116 style: &EditorStyle,
5117) -> DiagnosticStyle {
5118 match (severity, valid) {
5119 (DiagnosticSeverity::ERROR, true) => style.error_diagnostic.clone(),
5120 (DiagnosticSeverity::ERROR, false) => style.invalid_error_diagnostic.clone(),
5121 (DiagnosticSeverity::WARNING, true) => style.warning_diagnostic.clone(),
5122 (DiagnosticSeverity::WARNING, false) => style.invalid_warning_diagnostic.clone(),
5123 (DiagnosticSeverity::INFORMATION, true) => style.information_diagnostic.clone(),
5124 (DiagnosticSeverity::INFORMATION, false) => style.invalid_information_diagnostic.clone(),
5125 (DiagnosticSeverity::HINT, true) => style.hint_diagnostic.clone(),
5126 (DiagnosticSeverity::HINT, false) => style.invalid_hint_diagnostic.clone(),
5127 _ => DiagnosticStyle {
5128 message: style.text.clone().into(),
5129 header: Default::default(),
5130 text_scale_factor: 1.,
5131 },
5132 }
5133}
5134
5135pub fn settings_builder(
5136 buffer: WeakModelHandle<MultiBuffer>,
5137 settings: watch::Receiver<workspace::Settings>,
5138) -> BuildSettings {
5139 Arc::new(move |cx| {
5140 let settings = settings.borrow();
5141 let font_cache = cx.font_cache();
5142 let font_family_id = settings.buffer_font_family;
5143 let font_family_name = cx.font_cache().family_name(font_family_id).unwrap();
5144 let font_properties = Default::default();
5145 let font_id = font_cache
5146 .select_font(font_family_id, &font_properties)
5147 .unwrap();
5148 let font_size = settings.buffer_font_size;
5149
5150 let mut theme = settings.theme.editor.clone();
5151 theme.text = TextStyle {
5152 color: theme.text.color,
5153 font_family_name,
5154 font_family_id,
5155 font_id,
5156 font_size,
5157 font_properties,
5158 underline: None,
5159 };
5160 let language = buffer.upgrade(cx).and_then(|buf| buf.read(cx).language(cx));
5161 let soft_wrap = match settings.soft_wrap(language) {
5162 workspace::settings::SoftWrap::None => SoftWrap::None,
5163 workspace::settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
5164 workspace::settings::SoftWrap::PreferredLineLength => {
5165 SoftWrap::Column(settings.preferred_line_length(language).saturating_sub(1))
5166 }
5167 };
5168
5169 EditorSettings {
5170 tab_size: settings.tab_size,
5171 soft_wrap,
5172 style: theme,
5173 }
5174 })
5175}
5176
5177pub fn combine_syntax_and_fuzzy_match_highlights(
5178 text: &str,
5179 default_style: HighlightStyle,
5180 syntax_ranges: impl Iterator<Item = (Range<usize>, HighlightStyle)>,
5181 match_indices: &[usize],
5182) -> Vec<(Range<usize>, HighlightStyle)> {
5183 let mut result = Vec::new();
5184 let mut match_indices = match_indices.iter().copied().peekable();
5185
5186 for (range, mut syntax_highlight) in syntax_ranges.chain([(usize::MAX..0, Default::default())])
5187 {
5188 syntax_highlight.font_properties.weight(Default::default());
5189
5190 // Add highlights for any fuzzy match characters before the next
5191 // syntax highlight range.
5192 while let Some(&match_index) = match_indices.peek() {
5193 if match_index >= range.start {
5194 break;
5195 }
5196 match_indices.next();
5197 let end_index = char_ix_after(match_index, text);
5198 let mut match_style = default_style;
5199 match_style.font_properties.weight(fonts::Weight::BOLD);
5200 result.push((match_index..end_index, match_style));
5201 }
5202
5203 if range.start == usize::MAX {
5204 break;
5205 }
5206
5207 // Add highlights for any fuzzy match characters within the
5208 // syntax highlight range.
5209 let mut offset = range.start;
5210 while let Some(&match_index) = match_indices.peek() {
5211 if match_index >= range.end {
5212 break;
5213 }
5214
5215 match_indices.next();
5216 if match_index > offset {
5217 result.push((offset..match_index, syntax_highlight));
5218 }
5219
5220 let mut end_index = char_ix_after(match_index, text);
5221 while let Some(&next_match_index) = match_indices.peek() {
5222 if next_match_index == end_index && next_match_index < range.end {
5223 end_index = char_ix_after(next_match_index, text);
5224 match_indices.next();
5225 } else {
5226 break;
5227 }
5228 }
5229
5230 let mut match_style = syntax_highlight;
5231 match_style.font_properties.weight(fonts::Weight::BOLD);
5232 result.push((match_index..end_index, match_style));
5233 offset = end_index;
5234 }
5235
5236 if offset < range.end {
5237 result.push((offset..range.end, syntax_highlight));
5238 }
5239 }
5240
5241 fn char_ix_after(ix: usize, text: &str) -> usize {
5242 ix + text[ix..].chars().next().unwrap().len_utf8()
5243 }
5244
5245 result
5246}
5247
5248fn styled_runs_for_completion_label<'a>(
5249 label: &'a CompletionLabel,
5250 default_color: Color,
5251 syntax_theme: &'a theme::SyntaxTheme,
5252) -> impl 'a + Iterator<Item = (Range<usize>, HighlightStyle)> {
5253 const MUTED_OPACITY: usize = 165;
5254
5255 let mut muted_default_style = HighlightStyle {
5256 color: default_color,
5257 ..Default::default()
5258 };
5259 muted_default_style.color.a = ((default_color.a as usize * MUTED_OPACITY) / 255) as u8;
5260
5261 let mut prev_end = label.filter_range.end;
5262 label
5263 .runs
5264 .iter()
5265 .enumerate()
5266 .flat_map(move |(ix, (range, highlight_id))| {
5267 let style = if let Some(style) = highlight_id.style(syntax_theme) {
5268 style
5269 } else {
5270 return Default::default();
5271 };
5272 let mut muted_style = style.clone();
5273 muted_style.color.a = ((style.color.a as usize * MUTED_OPACITY) / 255) as u8;
5274
5275 let mut runs = SmallVec::<[(Range<usize>, HighlightStyle); 3]>::new();
5276 if range.start >= label.filter_range.end {
5277 if range.start > prev_end {
5278 runs.push((prev_end..range.start, muted_default_style));
5279 }
5280 runs.push((range.clone(), muted_style));
5281 } else if range.end <= label.filter_range.end {
5282 runs.push((range.clone(), style));
5283 } else {
5284 runs.push((range.start..label.filter_range.end, style));
5285 runs.push((label.filter_range.end..range.end, muted_style));
5286 }
5287 prev_end = cmp::max(prev_end, range.end);
5288
5289 if ix + 1 == label.runs.len() && label.text.len() > prev_end {
5290 runs.push((prev_end..label.text.len(), muted_default_style));
5291 }
5292
5293 runs
5294 })
5295}
5296
5297#[cfg(test)]
5298mod tests {
5299 use super::*;
5300 use language::LanguageConfig;
5301 use lsp::FakeLanguageServer;
5302 use project::{FakeFs, ProjectPath};
5303 use std::{cell::RefCell, rc::Rc, time::Instant};
5304 use text::Point;
5305 use unindent::Unindent;
5306 use util::test::sample_text;
5307
5308 #[gpui::test]
5309 fn test_undo_redo_with_selection_restoration(cx: &mut MutableAppContext) {
5310 let mut now = Instant::now();
5311 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
5312 let group_interval = buffer.read(cx).transaction_group_interval();
5313 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5314 let settings = EditorSettings::test(cx);
5315 let (_, editor) = cx.add_window(Default::default(), |cx| {
5316 build_editor(buffer.clone(), settings, cx)
5317 });
5318
5319 editor.update(cx, |editor, cx| {
5320 editor.start_transaction_at(now, cx);
5321 editor.select_ranges([2..4], None, cx);
5322 editor.insert("cd", cx);
5323 editor.end_transaction_at(now, cx);
5324 assert_eq!(editor.text(cx), "12cd56");
5325 assert_eq!(editor.selected_ranges(cx), vec![4..4]);
5326
5327 editor.start_transaction_at(now, cx);
5328 editor.select_ranges([4..5], None, cx);
5329 editor.insert("e", cx);
5330 editor.end_transaction_at(now, cx);
5331 assert_eq!(editor.text(cx), "12cde6");
5332 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
5333
5334 now += group_interval + Duration::from_millis(1);
5335 editor.select_ranges([2..2], None, cx);
5336
5337 // Simulate an edit in another editor
5338 buffer.update(cx, |buffer, cx| {
5339 buffer.start_transaction_at(now, cx);
5340 buffer.edit([0..1], "a", cx);
5341 buffer.edit([1..1], "b", cx);
5342 buffer.end_transaction_at(now, cx);
5343 });
5344
5345 assert_eq!(editor.text(cx), "ab2cde6");
5346 assert_eq!(editor.selected_ranges(cx), vec![3..3]);
5347
5348 // Last transaction happened past the group interval in a different editor.
5349 // Undo it individually and don't restore selections.
5350 editor.undo(&Undo, cx);
5351 assert_eq!(editor.text(cx), "12cde6");
5352 assert_eq!(editor.selected_ranges(cx), vec![2..2]);
5353
5354 // First two transactions happened within the group interval in this editor.
5355 // Undo them together and restore selections.
5356 editor.undo(&Undo, cx);
5357 editor.undo(&Undo, cx); // Undo stack is empty here, so this is a no-op.
5358 assert_eq!(editor.text(cx), "123456");
5359 assert_eq!(editor.selected_ranges(cx), vec![0..0]);
5360
5361 // Redo the first two transactions together.
5362 editor.redo(&Redo, cx);
5363 assert_eq!(editor.text(cx), "12cde6");
5364 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
5365
5366 // Redo the last transaction on its own.
5367 editor.redo(&Redo, cx);
5368 assert_eq!(editor.text(cx), "ab2cde6");
5369 assert_eq!(editor.selected_ranges(cx), vec![6..6]);
5370
5371 // Test empty transactions.
5372 editor.start_transaction_at(now, cx);
5373 editor.end_transaction_at(now, cx);
5374 editor.undo(&Undo, cx);
5375 assert_eq!(editor.text(cx), "12cde6");
5376 });
5377 }
5378
5379 #[gpui::test]
5380 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
5381 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
5382 let settings = EditorSettings::test(cx);
5383 let (_, editor) =
5384 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5385
5386 editor.update(cx, |view, cx| {
5387 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
5388 });
5389
5390 assert_eq!(
5391 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5392 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
5393 );
5394
5395 editor.update(cx, |view, cx| {
5396 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
5397 });
5398
5399 assert_eq!(
5400 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5401 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
5402 );
5403
5404 editor.update(cx, |view, cx| {
5405 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
5406 });
5407
5408 assert_eq!(
5409 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5410 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
5411 );
5412
5413 editor.update(cx, |view, cx| {
5414 view.end_selection(cx);
5415 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
5416 });
5417
5418 assert_eq!(
5419 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5420 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
5421 );
5422
5423 editor.update(cx, |view, cx| {
5424 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
5425 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
5426 });
5427
5428 assert_eq!(
5429 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5430 [
5431 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
5432 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
5433 ]
5434 );
5435
5436 editor.update(cx, |view, cx| {
5437 view.end_selection(cx);
5438 });
5439
5440 assert_eq!(
5441 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5442 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
5443 );
5444 }
5445
5446 #[gpui::test]
5447 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
5448 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
5449 let settings = EditorSettings::test(cx);
5450 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5451
5452 view.update(cx, |view, cx| {
5453 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
5454 assert_eq!(
5455 view.selected_display_ranges(cx),
5456 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
5457 );
5458 });
5459
5460 view.update(cx, |view, cx| {
5461 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
5462 assert_eq!(
5463 view.selected_display_ranges(cx),
5464 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
5465 );
5466 });
5467
5468 view.update(cx, |view, cx| {
5469 view.cancel(&Cancel, cx);
5470 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
5471 assert_eq!(
5472 view.selected_display_ranges(cx),
5473 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
5474 );
5475 });
5476 }
5477
5478 #[gpui::test]
5479 fn test_navigation_history(cx: &mut gpui::MutableAppContext) {
5480 cx.add_window(Default::default(), |cx| {
5481 use workspace::ItemView;
5482 let nav_history = Rc::new(RefCell::new(workspace::NavHistory::default()));
5483 let settings = EditorSettings::test(&cx);
5484 let buffer = MultiBuffer::build_simple(&sample_text(30, 5, 'a'), cx);
5485 let mut editor = build_editor(buffer.clone(), settings, cx);
5486 editor.nav_history = Some(ItemNavHistory::new(nav_history.clone(), &cx.handle()));
5487
5488 // Move the cursor a small distance.
5489 // Nothing is added to the navigation history.
5490 editor.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
5491 editor.select_display_ranges(&[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)], cx);
5492 assert!(nav_history.borrow_mut().pop_backward().is_none());
5493
5494 // Move the cursor a large distance.
5495 // The history can jump back to the previous position.
5496 editor.select_display_ranges(&[DisplayPoint::new(13, 0)..DisplayPoint::new(13, 3)], cx);
5497 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
5498 editor.navigate(nav_entry.data.unwrap(), cx);
5499 assert_eq!(nav_entry.item_view.id(), cx.view_id());
5500 assert_eq!(
5501 editor.selected_display_ranges(cx),
5502 &[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)]
5503 );
5504
5505 // Move the cursor a small distance via the mouse.
5506 // Nothing is added to the navigation history.
5507 editor.begin_selection(DisplayPoint::new(5, 0), false, 1, cx);
5508 editor.end_selection(cx);
5509 assert_eq!(
5510 editor.selected_display_ranges(cx),
5511 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
5512 );
5513 assert!(nav_history.borrow_mut().pop_backward().is_none());
5514
5515 // Move the cursor a large distance via the mouse.
5516 // The history can jump back to the previous position.
5517 editor.begin_selection(DisplayPoint::new(15, 0), false, 1, cx);
5518 editor.end_selection(cx);
5519 assert_eq!(
5520 editor.selected_display_ranges(cx),
5521 &[DisplayPoint::new(15, 0)..DisplayPoint::new(15, 0)]
5522 );
5523 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
5524 editor.navigate(nav_entry.data.unwrap(), cx);
5525 assert_eq!(nav_entry.item_view.id(), cx.view_id());
5526 assert_eq!(
5527 editor.selected_display_ranges(cx),
5528 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
5529 );
5530
5531 editor
5532 });
5533 }
5534
5535 #[gpui::test]
5536 fn test_cancel(cx: &mut gpui::MutableAppContext) {
5537 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
5538 let settings = EditorSettings::test(cx);
5539 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5540
5541 view.update(cx, |view, cx| {
5542 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
5543 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
5544 view.end_selection(cx);
5545
5546 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
5547 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
5548 view.end_selection(cx);
5549 assert_eq!(
5550 view.selected_display_ranges(cx),
5551 [
5552 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5553 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
5554 ]
5555 );
5556 });
5557
5558 view.update(cx, |view, cx| {
5559 view.cancel(&Cancel, cx);
5560 assert_eq!(
5561 view.selected_display_ranges(cx),
5562 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
5563 );
5564 });
5565
5566 view.update(cx, |view, cx| {
5567 view.cancel(&Cancel, cx);
5568 assert_eq!(
5569 view.selected_display_ranges(cx),
5570 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
5571 );
5572 });
5573 }
5574
5575 #[gpui::test]
5576 fn test_fold(cx: &mut gpui::MutableAppContext) {
5577 let buffer = MultiBuffer::build_simple(
5578 &"
5579 impl Foo {
5580 // Hello!
5581
5582 fn a() {
5583 1
5584 }
5585
5586 fn b() {
5587 2
5588 }
5589
5590 fn c() {
5591 3
5592 }
5593 }
5594 "
5595 .unindent(),
5596 cx,
5597 );
5598 let settings = EditorSettings::test(&cx);
5599 let (_, view) = cx.add_window(Default::default(), |cx| {
5600 build_editor(buffer.clone(), settings, cx)
5601 });
5602
5603 view.update(cx, |view, cx| {
5604 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx);
5605 view.fold(&Fold, cx);
5606 assert_eq!(
5607 view.display_text(cx),
5608 "
5609 impl Foo {
5610 // Hello!
5611
5612 fn a() {
5613 1
5614 }
5615
5616 fn b() {…
5617 }
5618
5619 fn c() {…
5620 }
5621 }
5622 "
5623 .unindent(),
5624 );
5625
5626 view.fold(&Fold, cx);
5627 assert_eq!(
5628 view.display_text(cx),
5629 "
5630 impl Foo {…
5631 }
5632 "
5633 .unindent(),
5634 );
5635
5636 view.unfold(&Unfold, cx);
5637 assert_eq!(
5638 view.display_text(cx),
5639 "
5640 impl Foo {
5641 // Hello!
5642
5643 fn a() {
5644 1
5645 }
5646
5647 fn b() {…
5648 }
5649
5650 fn c() {…
5651 }
5652 }
5653 "
5654 .unindent(),
5655 );
5656
5657 view.unfold(&Unfold, cx);
5658 assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text());
5659 });
5660 }
5661
5662 #[gpui::test]
5663 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
5664 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
5665 let settings = EditorSettings::test(&cx);
5666 let (_, view) = cx.add_window(Default::default(), |cx| {
5667 build_editor(buffer.clone(), settings, cx)
5668 });
5669
5670 buffer.update(cx, |buffer, cx| {
5671 buffer.edit(
5672 vec![
5673 Point::new(1, 0)..Point::new(1, 0),
5674 Point::new(1, 1)..Point::new(1, 1),
5675 ],
5676 "\t",
5677 cx,
5678 );
5679 });
5680
5681 view.update(cx, |view, cx| {
5682 assert_eq!(
5683 view.selected_display_ranges(cx),
5684 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
5685 );
5686
5687 view.move_down(&MoveDown, cx);
5688 assert_eq!(
5689 view.selected_display_ranges(cx),
5690 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
5691 );
5692
5693 view.move_right(&MoveRight, cx);
5694 assert_eq!(
5695 view.selected_display_ranges(cx),
5696 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
5697 );
5698
5699 view.move_left(&MoveLeft, cx);
5700 assert_eq!(
5701 view.selected_display_ranges(cx),
5702 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
5703 );
5704
5705 view.move_up(&MoveUp, cx);
5706 assert_eq!(
5707 view.selected_display_ranges(cx),
5708 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
5709 );
5710
5711 view.move_to_end(&MoveToEnd, cx);
5712 assert_eq!(
5713 view.selected_display_ranges(cx),
5714 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
5715 );
5716
5717 view.move_to_beginning(&MoveToBeginning, cx);
5718 assert_eq!(
5719 view.selected_display_ranges(cx),
5720 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
5721 );
5722
5723 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx);
5724 view.select_to_beginning(&SelectToBeginning, cx);
5725 assert_eq!(
5726 view.selected_display_ranges(cx),
5727 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
5728 );
5729
5730 view.select_to_end(&SelectToEnd, cx);
5731 assert_eq!(
5732 view.selected_display_ranges(cx),
5733 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
5734 );
5735 });
5736 }
5737
5738 #[gpui::test]
5739 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
5740 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
5741 let settings = EditorSettings::test(&cx);
5742 let (_, view) = cx.add_window(Default::default(), |cx| {
5743 build_editor(buffer.clone(), settings, cx)
5744 });
5745
5746 assert_eq!('ⓐ'.len_utf8(), 3);
5747 assert_eq!('α'.len_utf8(), 2);
5748
5749 view.update(cx, |view, cx| {
5750 view.fold_ranges(
5751 vec![
5752 Point::new(0, 6)..Point::new(0, 12),
5753 Point::new(1, 2)..Point::new(1, 4),
5754 Point::new(2, 4)..Point::new(2, 8),
5755 ],
5756 cx,
5757 );
5758 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
5759
5760 view.move_right(&MoveRight, cx);
5761 assert_eq!(
5762 view.selected_display_ranges(cx),
5763 &[empty_range(0, "ⓐ".len())]
5764 );
5765 view.move_right(&MoveRight, cx);
5766 assert_eq!(
5767 view.selected_display_ranges(cx),
5768 &[empty_range(0, "ⓐⓑ".len())]
5769 );
5770 view.move_right(&MoveRight, cx);
5771 assert_eq!(
5772 view.selected_display_ranges(cx),
5773 &[empty_range(0, "ⓐⓑ…".len())]
5774 );
5775
5776 view.move_down(&MoveDown, cx);
5777 assert_eq!(
5778 view.selected_display_ranges(cx),
5779 &[empty_range(1, "ab…".len())]
5780 );
5781 view.move_left(&MoveLeft, cx);
5782 assert_eq!(
5783 view.selected_display_ranges(cx),
5784 &[empty_range(1, "ab".len())]
5785 );
5786 view.move_left(&MoveLeft, cx);
5787 assert_eq!(
5788 view.selected_display_ranges(cx),
5789 &[empty_range(1, "a".len())]
5790 );
5791
5792 view.move_down(&MoveDown, cx);
5793 assert_eq!(
5794 view.selected_display_ranges(cx),
5795 &[empty_range(2, "α".len())]
5796 );
5797 view.move_right(&MoveRight, cx);
5798 assert_eq!(
5799 view.selected_display_ranges(cx),
5800 &[empty_range(2, "αβ".len())]
5801 );
5802 view.move_right(&MoveRight, cx);
5803 assert_eq!(
5804 view.selected_display_ranges(cx),
5805 &[empty_range(2, "αβ…".len())]
5806 );
5807 view.move_right(&MoveRight, cx);
5808 assert_eq!(
5809 view.selected_display_ranges(cx),
5810 &[empty_range(2, "αβ…ε".len())]
5811 );
5812
5813 view.move_up(&MoveUp, cx);
5814 assert_eq!(
5815 view.selected_display_ranges(cx),
5816 &[empty_range(1, "ab…e".len())]
5817 );
5818 view.move_up(&MoveUp, cx);
5819 assert_eq!(
5820 view.selected_display_ranges(cx),
5821 &[empty_range(0, "ⓐⓑ…ⓔ".len())]
5822 );
5823 view.move_left(&MoveLeft, cx);
5824 assert_eq!(
5825 view.selected_display_ranges(cx),
5826 &[empty_range(0, "ⓐⓑ…".len())]
5827 );
5828 view.move_left(&MoveLeft, cx);
5829 assert_eq!(
5830 view.selected_display_ranges(cx),
5831 &[empty_range(0, "ⓐⓑ".len())]
5832 );
5833 view.move_left(&MoveLeft, cx);
5834 assert_eq!(
5835 view.selected_display_ranges(cx),
5836 &[empty_range(0, "ⓐ".len())]
5837 );
5838 });
5839 }
5840
5841 #[gpui::test]
5842 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
5843 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
5844 let settings = EditorSettings::test(&cx);
5845 let (_, view) = cx.add_window(Default::default(), |cx| {
5846 build_editor(buffer.clone(), settings, cx)
5847 });
5848 view.update(cx, |view, cx| {
5849 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx);
5850 view.move_down(&MoveDown, cx);
5851 assert_eq!(
5852 view.selected_display_ranges(cx),
5853 &[empty_range(1, "abcd".len())]
5854 );
5855
5856 view.move_down(&MoveDown, cx);
5857 assert_eq!(
5858 view.selected_display_ranges(cx),
5859 &[empty_range(2, "αβγ".len())]
5860 );
5861
5862 view.move_down(&MoveDown, cx);
5863 assert_eq!(
5864 view.selected_display_ranges(cx),
5865 &[empty_range(3, "abcd".len())]
5866 );
5867
5868 view.move_down(&MoveDown, cx);
5869 assert_eq!(
5870 view.selected_display_ranges(cx),
5871 &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
5872 );
5873
5874 view.move_up(&MoveUp, cx);
5875 assert_eq!(
5876 view.selected_display_ranges(cx),
5877 &[empty_range(3, "abcd".len())]
5878 );
5879
5880 view.move_up(&MoveUp, cx);
5881 assert_eq!(
5882 view.selected_display_ranges(cx),
5883 &[empty_range(2, "αβγ".len())]
5884 );
5885 });
5886 }
5887
5888 #[gpui::test]
5889 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
5890 let buffer = MultiBuffer::build_simple("abc\n def", cx);
5891 let settings = EditorSettings::test(&cx);
5892 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5893 view.update(cx, |view, cx| {
5894 view.select_display_ranges(
5895 &[
5896 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5897 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
5898 ],
5899 cx,
5900 );
5901 });
5902
5903 view.update(cx, |view, cx| {
5904 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
5905 assert_eq!(
5906 view.selected_display_ranges(cx),
5907 &[
5908 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5909 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5910 ]
5911 );
5912 });
5913
5914 view.update(cx, |view, cx| {
5915 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
5916 assert_eq!(
5917 view.selected_display_ranges(cx),
5918 &[
5919 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5920 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5921 ]
5922 );
5923 });
5924
5925 view.update(cx, |view, cx| {
5926 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
5927 assert_eq!(
5928 view.selected_display_ranges(cx),
5929 &[
5930 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5931 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5932 ]
5933 );
5934 });
5935
5936 view.update(cx, |view, cx| {
5937 view.move_to_end_of_line(&MoveToEndOfLine, cx);
5938 assert_eq!(
5939 view.selected_display_ranges(cx),
5940 &[
5941 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5942 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
5943 ]
5944 );
5945 });
5946
5947 // Moving to the end of line again is a no-op.
5948 view.update(cx, |view, cx| {
5949 view.move_to_end_of_line(&MoveToEndOfLine, cx);
5950 assert_eq!(
5951 view.selected_display_ranges(cx),
5952 &[
5953 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5954 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
5955 ]
5956 );
5957 });
5958
5959 view.update(cx, |view, cx| {
5960 view.move_left(&MoveLeft, cx);
5961 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
5962 assert_eq!(
5963 view.selected_display_ranges(cx),
5964 &[
5965 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
5966 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
5967 ]
5968 );
5969 });
5970
5971 view.update(cx, |view, cx| {
5972 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
5973 assert_eq!(
5974 view.selected_display_ranges(cx),
5975 &[
5976 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
5977 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
5978 ]
5979 );
5980 });
5981
5982 view.update(cx, |view, cx| {
5983 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
5984 assert_eq!(
5985 view.selected_display_ranges(cx),
5986 &[
5987 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
5988 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
5989 ]
5990 );
5991 });
5992
5993 view.update(cx, |view, cx| {
5994 view.select_to_end_of_line(&SelectToEndOfLine(true), cx);
5995 assert_eq!(
5996 view.selected_display_ranges(cx),
5997 &[
5998 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
5999 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
6000 ]
6001 );
6002 });
6003
6004 view.update(cx, |view, cx| {
6005 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
6006 assert_eq!(view.display_text(cx), "ab\n de");
6007 assert_eq!(
6008 view.selected_display_ranges(cx),
6009 &[
6010 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6011 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
6012 ]
6013 );
6014 });
6015
6016 view.update(cx, |view, cx| {
6017 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
6018 assert_eq!(view.display_text(cx), "\n");
6019 assert_eq!(
6020 view.selected_display_ranges(cx),
6021 &[
6022 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6023 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6024 ]
6025 );
6026 });
6027 }
6028
6029 #[gpui::test]
6030 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
6031 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
6032 let settings = EditorSettings::test(&cx);
6033 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6034 view.update(cx, |view, cx| {
6035 view.select_display_ranges(
6036 &[
6037 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
6038 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
6039 ],
6040 cx,
6041 );
6042 });
6043
6044 view.update(cx, |view, cx| {
6045 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6046 assert_eq!(
6047 view.selected_display_ranges(cx),
6048 &[
6049 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
6050 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
6051 ]
6052 );
6053 });
6054
6055 view.update(cx, |view, cx| {
6056 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6057 assert_eq!(
6058 view.selected_display_ranges(cx),
6059 &[
6060 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
6061 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2),
6062 ]
6063 );
6064 });
6065
6066 view.update(cx, |view, cx| {
6067 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6068 assert_eq!(
6069 view.selected_display_ranges(cx),
6070 &[
6071 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
6072 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
6073 ]
6074 );
6075 });
6076
6077 view.update(cx, |view, cx| {
6078 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6079 assert_eq!(
6080 view.selected_display_ranges(cx),
6081 &[
6082 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6083 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6084 ]
6085 );
6086 });
6087
6088 view.update(cx, |view, cx| {
6089 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6090 assert_eq!(
6091 view.selected_display_ranges(cx),
6092 &[
6093 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6094 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 23),
6095 ]
6096 );
6097 });
6098
6099 view.update(cx, |view, cx| {
6100 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6101 assert_eq!(
6102 view.selected_display_ranges(cx),
6103 &[
6104 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6105 DisplayPoint::new(0, 24)..DisplayPoint::new(0, 24),
6106 ]
6107 );
6108 });
6109
6110 view.update(cx, |view, cx| {
6111 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6112 assert_eq!(
6113 view.selected_display_ranges(cx),
6114 &[
6115 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
6116 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6117 ]
6118 );
6119 });
6120
6121 view.update(cx, |view, cx| {
6122 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6123 assert_eq!(
6124 view.selected_display_ranges(cx),
6125 &[
6126 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
6127 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
6128 ]
6129 );
6130 });
6131
6132 view.update(cx, |view, cx| {
6133 view.move_right(&MoveRight, cx);
6134 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
6135 assert_eq!(
6136 view.selected_display_ranges(cx),
6137 &[
6138 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
6139 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
6140 ]
6141 );
6142 });
6143
6144 view.update(cx, |view, cx| {
6145 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
6146 assert_eq!(
6147 view.selected_display_ranges(cx),
6148 &[
6149 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 7),
6150 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 2),
6151 ]
6152 );
6153 });
6154
6155 view.update(cx, |view, cx| {
6156 view.select_to_next_word_boundary(&SelectToNextWordBoundary, cx);
6157 assert_eq!(
6158 view.selected_display_ranges(cx),
6159 &[
6160 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
6161 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
6162 ]
6163 );
6164 });
6165 }
6166
6167 #[gpui::test]
6168 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
6169 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
6170 let settings = EditorSettings::test(&cx);
6171 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6172
6173 view.update(cx, |view, cx| {
6174 view.set_wrap_width(Some(140.), cx);
6175 assert_eq!(
6176 view.display_text(cx),
6177 "use one::{\n two::three::\n four::five\n};"
6178 );
6179
6180 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx);
6181
6182 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6183 assert_eq!(
6184 view.selected_display_ranges(cx),
6185 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
6186 );
6187
6188 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6189 assert_eq!(
6190 view.selected_display_ranges(cx),
6191 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
6192 );
6193
6194 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6195 assert_eq!(
6196 view.selected_display_ranges(cx),
6197 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
6198 );
6199
6200 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6201 assert_eq!(
6202 view.selected_display_ranges(cx),
6203 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
6204 );
6205
6206 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6207 assert_eq!(
6208 view.selected_display_ranges(cx),
6209 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
6210 );
6211
6212 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6213 assert_eq!(
6214 view.selected_display_ranges(cx),
6215 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
6216 );
6217 });
6218 }
6219
6220 #[gpui::test]
6221 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
6222 let buffer = MultiBuffer::build_simple("one two three four", cx);
6223 let settings = EditorSettings::test(&cx);
6224 let (_, view) = cx.add_window(Default::default(), |cx| {
6225 build_editor(buffer.clone(), settings, cx)
6226 });
6227
6228 view.update(cx, |view, cx| {
6229 view.select_display_ranges(
6230 &[
6231 // an empty selection - the preceding word fragment is deleted
6232 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6233 // characters selected - they are deleted
6234 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
6235 ],
6236 cx,
6237 );
6238 view.delete_to_previous_word_boundary(&DeleteToPreviousWordBoundary, cx);
6239 });
6240
6241 assert_eq!(buffer.read(cx).read(cx).text(), "e two te four");
6242
6243 view.update(cx, |view, cx| {
6244 view.select_display_ranges(
6245 &[
6246 // an empty selection - the following word fragment is deleted
6247 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6248 // characters selected - they are deleted
6249 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
6250 ],
6251 cx,
6252 );
6253 view.delete_to_next_word_boundary(&DeleteToNextWordBoundary, cx);
6254 });
6255
6256 assert_eq!(buffer.read(cx).read(cx).text(), "e t te our");
6257 }
6258
6259 #[gpui::test]
6260 fn test_newline(cx: &mut gpui::MutableAppContext) {
6261 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
6262 let settings = EditorSettings::test(&cx);
6263 let (_, view) = cx.add_window(Default::default(), |cx| {
6264 build_editor(buffer.clone(), settings, cx)
6265 });
6266
6267 view.update(cx, |view, cx| {
6268 view.select_display_ranges(
6269 &[
6270 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6271 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6272 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
6273 ],
6274 cx,
6275 );
6276
6277 view.newline(&Newline, cx);
6278 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
6279 });
6280 }
6281
6282 #[gpui::test]
6283 fn test_newline_with_old_selections(cx: &mut gpui::MutableAppContext) {
6284 let buffer = MultiBuffer::build_simple(
6285 "
6286 a
6287 b(
6288 X
6289 )
6290 c(
6291 X
6292 )
6293 "
6294 .unindent()
6295 .as_str(),
6296 cx,
6297 );
6298
6299 let settings = EditorSettings::test(&cx);
6300 let (_, editor) = cx.add_window(Default::default(), |cx| {
6301 let mut editor = build_editor(buffer.clone(), settings, cx);
6302 editor.select_ranges(
6303 [
6304 Point::new(2, 4)..Point::new(2, 5),
6305 Point::new(5, 4)..Point::new(5, 5),
6306 ],
6307 None,
6308 cx,
6309 );
6310 editor
6311 });
6312
6313 // Edit the buffer directly, deleting ranges surrounding the editor's selections
6314 buffer.update(cx, |buffer, cx| {
6315 buffer.edit(
6316 [
6317 Point::new(1, 2)..Point::new(3, 0),
6318 Point::new(4, 2)..Point::new(6, 0),
6319 ],
6320 "",
6321 cx,
6322 );
6323 assert_eq!(
6324 buffer.read(cx).text(),
6325 "
6326 a
6327 b()
6328 c()
6329 "
6330 .unindent()
6331 );
6332 });
6333
6334 editor.update(cx, |editor, cx| {
6335 assert_eq!(
6336 editor.selected_ranges(cx),
6337 &[
6338 Point::new(1, 2)..Point::new(1, 2),
6339 Point::new(2, 2)..Point::new(2, 2),
6340 ],
6341 );
6342
6343 editor.newline(&Newline, cx);
6344 assert_eq!(
6345 editor.text(cx),
6346 "
6347 a
6348 b(
6349 )
6350 c(
6351 )
6352 "
6353 .unindent()
6354 );
6355
6356 // The selections are moved after the inserted newlines
6357 assert_eq!(
6358 editor.selected_ranges(cx),
6359 &[
6360 Point::new(2, 0)..Point::new(2, 0),
6361 Point::new(4, 0)..Point::new(4, 0),
6362 ],
6363 );
6364 });
6365 }
6366
6367 #[gpui::test]
6368 fn test_insert_with_old_selections(cx: &mut gpui::MutableAppContext) {
6369 let buffer = MultiBuffer::build_simple("a( X ), b( Y ), c( Z )", cx);
6370
6371 let settings = EditorSettings::test(&cx);
6372 let (_, editor) = cx.add_window(Default::default(), |cx| {
6373 let mut editor = build_editor(buffer.clone(), settings, cx);
6374 editor.select_ranges([3..4, 11..12, 19..20], None, cx);
6375 editor
6376 });
6377
6378 // Edit the buffer directly, deleting ranges surrounding the editor's selections
6379 buffer.update(cx, |buffer, cx| {
6380 buffer.edit([2..5, 10..13, 18..21], "", cx);
6381 assert_eq!(buffer.read(cx).text(), "a(), b(), c()".unindent());
6382 });
6383
6384 editor.update(cx, |editor, cx| {
6385 assert_eq!(editor.selected_ranges(cx), &[2..2, 7..7, 12..12],);
6386
6387 editor.insert("Z", cx);
6388 assert_eq!(editor.text(cx), "a(Z), b(Z), c(Z)");
6389
6390 // The selections are moved after the inserted characters
6391 assert_eq!(editor.selected_ranges(cx), &[3..3, 9..9, 15..15],);
6392 });
6393 }
6394
6395 #[gpui::test]
6396 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
6397 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
6398 let settings = EditorSettings::test(&cx);
6399 let (_, view) = cx.add_window(Default::default(), |cx| {
6400 build_editor(buffer.clone(), settings, cx)
6401 });
6402
6403 view.update(cx, |view, cx| {
6404 // two selections on the same line
6405 view.select_display_ranges(
6406 &[
6407 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
6408 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
6409 ],
6410 cx,
6411 );
6412
6413 // indent from mid-tabstop to full tabstop
6414 view.tab(&Tab, cx);
6415 assert_eq!(view.text(cx), " one two\nthree\n four");
6416 assert_eq!(
6417 view.selected_display_ranges(cx),
6418 &[
6419 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
6420 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
6421 ]
6422 );
6423
6424 // outdent from 1 tabstop to 0 tabstops
6425 view.outdent(&Outdent, cx);
6426 assert_eq!(view.text(cx), "one two\nthree\n four");
6427 assert_eq!(
6428 view.selected_display_ranges(cx),
6429 &[
6430 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
6431 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
6432 ]
6433 );
6434
6435 // select across line ending
6436 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx);
6437
6438 // indent and outdent affect only the preceding line
6439 view.tab(&Tab, cx);
6440 assert_eq!(view.text(cx), "one two\n three\n four");
6441 assert_eq!(
6442 view.selected_display_ranges(cx),
6443 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
6444 );
6445 view.outdent(&Outdent, cx);
6446 assert_eq!(view.text(cx), "one two\nthree\n four");
6447 assert_eq!(
6448 view.selected_display_ranges(cx),
6449 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
6450 );
6451
6452 // Ensure that indenting/outdenting works when the cursor is at column 0.
6453 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
6454 view.tab(&Tab, cx);
6455 assert_eq!(view.text(cx), "one two\n three\n four");
6456 assert_eq!(
6457 view.selected_display_ranges(cx),
6458 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
6459 );
6460
6461 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
6462 view.outdent(&Outdent, cx);
6463 assert_eq!(view.text(cx), "one two\nthree\n four");
6464 assert_eq!(
6465 view.selected_display_ranges(cx),
6466 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6467 );
6468 });
6469 }
6470
6471 #[gpui::test]
6472 fn test_backspace(cx: &mut gpui::MutableAppContext) {
6473 let buffer =
6474 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
6475 let settings = EditorSettings::test(&cx);
6476 let (_, view) = cx.add_window(Default::default(), |cx| {
6477 build_editor(buffer.clone(), settings, cx)
6478 });
6479
6480 view.update(cx, |view, cx| {
6481 view.select_display_ranges(
6482 &[
6483 // an empty selection - the preceding character is deleted
6484 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6485 // one character selected - it is deleted
6486 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
6487 // a line suffix selected - it is deleted
6488 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
6489 ],
6490 cx,
6491 );
6492 view.backspace(&Backspace, cx);
6493 });
6494
6495 assert_eq!(
6496 buffer.read(cx).read(cx).text(),
6497 "oe two three\nfou five six\nseven ten\n"
6498 );
6499 }
6500
6501 #[gpui::test]
6502 fn test_delete(cx: &mut gpui::MutableAppContext) {
6503 let buffer =
6504 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
6505 let settings = EditorSettings::test(&cx);
6506 let (_, view) = cx.add_window(Default::default(), |cx| {
6507 build_editor(buffer.clone(), settings, cx)
6508 });
6509
6510 view.update(cx, |view, cx| {
6511 view.select_display_ranges(
6512 &[
6513 // an empty selection - the following character is deleted
6514 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6515 // one character selected - it is deleted
6516 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
6517 // a line suffix selected - it is deleted
6518 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
6519 ],
6520 cx,
6521 );
6522 view.delete(&Delete, cx);
6523 });
6524
6525 assert_eq!(
6526 buffer.read(cx).read(cx).text(),
6527 "on two three\nfou five six\nseven ten\n"
6528 );
6529 }
6530
6531 #[gpui::test]
6532 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
6533 let settings = EditorSettings::test(&cx);
6534 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
6535 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6536 view.update(cx, |view, cx| {
6537 view.select_display_ranges(
6538 &[
6539 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6540 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
6541 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6542 ],
6543 cx,
6544 );
6545 view.delete_line(&DeleteLine, cx);
6546 assert_eq!(view.display_text(cx), "ghi");
6547 assert_eq!(
6548 view.selected_display_ranges(cx),
6549 vec![
6550 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6551 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
6552 ]
6553 );
6554 });
6555
6556 let settings = EditorSettings::test(&cx);
6557 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
6558 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6559 view.update(cx, |view, cx| {
6560 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx);
6561 view.delete_line(&DeleteLine, cx);
6562 assert_eq!(view.display_text(cx), "ghi\n");
6563 assert_eq!(
6564 view.selected_display_ranges(cx),
6565 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
6566 );
6567 });
6568 }
6569
6570 #[gpui::test]
6571 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
6572 let settings = EditorSettings::test(&cx);
6573 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
6574 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6575 view.update(cx, |view, cx| {
6576 view.select_display_ranges(
6577 &[
6578 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
6579 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6580 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6581 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6582 ],
6583 cx,
6584 );
6585 view.duplicate_line(&DuplicateLine, cx);
6586 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
6587 assert_eq!(
6588 view.selected_display_ranges(cx),
6589 vec![
6590 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
6591 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6592 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6593 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
6594 ]
6595 );
6596 });
6597
6598 let settings = EditorSettings::test(&cx);
6599 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
6600 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6601 view.update(cx, |view, cx| {
6602 view.select_display_ranges(
6603 &[
6604 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
6605 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
6606 ],
6607 cx,
6608 );
6609 view.duplicate_line(&DuplicateLine, cx);
6610 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
6611 assert_eq!(
6612 view.selected_display_ranges(cx),
6613 vec![
6614 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
6615 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
6616 ]
6617 );
6618 });
6619 }
6620
6621 #[gpui::test]
6622 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
6623 let settings = EditorSettings::test(&cx);
6624 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
6625 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6626 view.update(cx, |view, cx| {
6627 view.fold_ranges(
6628 vec![
6629 Point::new(0, 2)..Point::new(1, 2),
6630 Point::new(2, 3)..Point::new(4, 1),
6631 Point::new(7, 0)..Point::new(8, 4),
6632 ],
6633 cx,
6634 );
6635 view.select_display_ranges(
6636 &[
6637 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6638 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
6639 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
6640 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
6641 ],
6642 cx,
6643 );
6644 assert_eq!(
6645 view.display_text(cx),
6646 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
6647 );
6648
6649 view.move_line_up(&MoveLineUp, cx);
6650 assert_eq!(
6651 view.display_text(cx),
6652 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
6653 );
6654 assert_eq!(
6655 view.selected_display_ranges(cx),
6656 vec![
6657 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6658 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6659 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
6660 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
6661 ]
6662 );
6663 });
6664
6665 view.update(cx, |view, cx| {
6666 view.move_line_down(&MoveLineDown, cx);
6667 assert_eq!(
6668 view.display_text(cx),
6669 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
6670 );
6671 assert_eq!(
6672 view.selected_display_ranges(cx),
6673 vec![
6674 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6675 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
6676 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
6677 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
6678 ]
6679 );
6680 });
6681
6682 view.update(cx, |view, cx| {
6683 view.move_line_down(&MoveLineDown, cx);
6684 assert_eq!(
6685 view.display_text(cx),
6686 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
6687 );
6688 assert_eq!(
6689 view.selected_display_ranges(cx),
6690 vec![
6691 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6692 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
6693 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
6694 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
6695 ]
6696 );
6697 });
6698
6699 view.update(cx, |view, cx| {
6700 view.move_line_up(&MoveLineUp, cx);
6701 assert_eq!(
6702 view.display_text(cx),
6703 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
6704 );
6705 assert_eq!(
6706 view.selected_display_ranges(cx),
6707 vec![
6708 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6709 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6710 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
6711 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
6712 ]
6713 );
6714 });
6715 }
6716
6717 #[gpui::test]
6718 fn test_move_line_up_down_with_blocks(cx: &mut gpui::MutableAppContext) {
6719 let settings = EditorSettings::test(&cx);
6720 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
6721 let snapshot = buffer.read(cx).snapshot(cx);
6722 let (_, editor) =
6723 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6724 editor.update(cx, |editor, cx| {
6725 editor.insert_blocks(
6726 [BlockProperties {
6727 position: snapshot.anchor_after(Point::new(2, 0)),
6728 disposition: BlockDisposition::Below,
6729 height: 1,
6730 render: Arc::new(|_| Empty::new().boxed()),
6731 }],
6732 cx,
6733 );
6734 editor.select_ranges([Point::new(2, 0)..Point::new(2, 0)], None, cx);
6735 editor.move_line_down(&MoveLineDown, cx);
6736 });
6737 }
6738
6739 #[gpui::test]
6740 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
6741 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
6742 let settings = EditorSettings::test(&cx);
6743 let view = cx
6744 .add_window(Default::default(), |cx| {
6745 build_editor(buffer.clone(), settings, cx)
6746 })
6747 .1;
6748
6749 // Cut with three selections. Clipboard text is divided into three slices.
6750 view.update(cx, |view, cx| {
6751 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
6752 view.cut(&Cut, cx);
6753 assert_eq!(view.display_text(cx), "two four six ");
6754 });
6755
6756 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
6757 view.update(cx, |view, cx| {
6758 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
6759 view.paste(&Paste, cx);
6760 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
6761 assert_eq!(
6762 view.selected_display_ranges(cx),
6763 &[
6764 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
6765 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
6766 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
6767 ]
6768 );
6769 });
6770
6771 // Paste again but with only two cursors. Since the number of cursors doesn't
6772 // match the number of slices in the clipboard, the entire clipboard text
6773 // is pasted at each cursor.
6774 view.update(cx, |view, cx| {
6775 view.select_ranges(vec![0..0, 31..31], None, cx);
6776 view.handle_input(&Input("( ".into()), cx);
6777 view.paste(&Paste, cx);
6778 view.handle_input(&Input(") ".into()), cx);
6779 assert_eq!(
6780 view.display_text(cx),
6781 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
6782 );
6783 });
6784
6785 view.update(cx, |view, cx| {
6786 view.select_ranges(vec![0..0], None, cx);
6787 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
6788 assert_eq!(
6789 view.display_text(cx),
6790 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
6791 );
6792 });
6793
6794 // Cut with three selections, one of which is full-line.
6795 view.update(cx, |view, cx| {
6796 view.select_display_ranges(
6797 &[
6798 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
6799 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6800 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
6801 ],
6802 cx,
6803 );
6804 view.cut(&Cut, cx);
6805 assert_eq!(
6806 view.display_text(cx),
6807 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
6808 );
6809 });
6810
6811 // Paste with three selections, noticing how the copied selection that was full-line
6812 // gets inserted before the second cursor.
6813 view.update(cx, |view, cx| {
6814 view.select_display_ranges(
6815 &[
6816 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6817 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6818 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
6819 ],
6820 cx,
6821 );
6822 view.paste(&Paste, cx);
6823 assert_eq!(
6824 view.display_text(cx),
6825 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
6826 );
6827 assert_eq!(
6828 view.selected_display_ranges(cx),
6829 &[
6830 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6831 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6832 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
6833 ]
6834 );
6835 });
6836
6837 // Copy with a single cursor only, which writes the whole line into the clipboard.
6838 view.update(cx, |view, cx| {
6839 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx);
6840 view.copy(&Copy, cx);
6841 });
6842
6843 // Paste with three selections, noticing how the copied full-line selection is inserted
6844 // before the empty selections but replaces the selection that is non-empty.
6845 view.update(cx, |view, cx| {
6846 view.select_display_ranges(
6847 &[
6848 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6849 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
6850 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6851 ],
6852 cx,
6853 );
6854 view.paste(&Paste, cx);
6855 assert_eq!(
6856 view.display_text(cx),
6857 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
6858 );
6859 assert_eq!(
6860 view.selected_display_ranges(cx),
6861 &[
6862 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6863 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6864 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
6865 ]
6866 );
6867 });
6868 }
6869
6870 #[gpui::test]
6871 fn test_select_all(cx: &mut gpui::MutableAppContext) {
6872 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
6873 let settings = EditorSettings::test(&cx);
6874 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6875 view.update(cx, |view, cx| {
6876 view.select_all(&SelectAll, cx);
6877 assert_eq!(
6878 view.selected_display_ranges(cx),
6879 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
6880 );
6881 });
6882 }
6883
6884 #[gpui::test]
6885 fn test_select_line(cx: &mut gpui::MutableAppContext) {
6886 let settings = EditorSettings::test(&cx);
6887 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
6888 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6889 view.update(cx, |view, cx| {
6890 view.select_display_ranges(
6891 &[
6892 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
6893 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6894 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6895 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
6896 ],
6897 cx,
6898 );
6899 view.select_line(&SelectLine, cx);
6900 assert_eq!(
6901 view.selected_display_ranges(cx),
6902 vec![
6903 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
6904 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
6905 ]
6906 );
6907 });
6908
6909 view.update(cx, |view, cx| {
6910 view.select_line(&SelectLine, cx);
6911 assert_eq!(
6912 view.selected_display_ranges(cx),
6913 vec![
6914 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
6915 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
6916 ]
6917 );
6918 });
6919
6920 view.update(cx, |view, cx| {
6921 view.select_line(&SelectLine, cx);
6922 assert_eq!(
6923 view.selected_display_ranges(cx),
6924 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
6925 );
6926 });
6927 }
6928
6929 #[gpui::test]
6930 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
6931 let settings = EditorSettings::test(&cx);
6932 let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
6933 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6934 view.update(cx, |view, cx| {
6935 view.fold_ranges(
6936 vec![
6937 Point::new(0, 2)..Point::new(1, 2),
6938 Point::new(2, 3)..Point::new(4, 1),
6939 Point::new(7, 0)..Point::new(8, 4),
6940 ],
6941 cx,
6942 );
6943 view.select_display_ranges(
6944 &[
6945 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
6946 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6947 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6948 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
6949 ],
6950 cx,
6951 );
6952 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
6953 });
6954
6955 view.update(cx, |view, cx| {
6956 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
6957 assert_eq!(
6958 view.display_text(cx),
6959 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
6960 );
6961 assert_eq!(
6962 view.selected_display_ranges(cx),
6963 [
6964 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6965 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6966 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
6967 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
6968 ]
6969 );
6970 });
6971
6972 view.update(cx, |view, cx| {
6973 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx);
6974 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
6975 assert_eq!(
6976 view.display_text(cx),
6977 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
6978 );
6979 assert_eq!(
6980 view.selected_display_ranges(cx),
6981 [
6982 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
6983 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6984 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
6985 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
6986 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
6987 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
6988 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
6989 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
6990 ]
6991 );
6992 });
6993 }
6994
6995 #[gpui::test]
6996 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
6997 let settings = EditorSettings::test(&cx);
6998 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
6999 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7000
7001 view.update(cx, |view, cx| {
7002 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx);
7003 });
7004 view.update(cx, |view, cx| {
7005 view.add_selection_above(&AddSelectionAbove, cx);
7006 assert_eq!(
7007 view.selected_display_ranges(cx),
7008 vec![
7009 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7010 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
7011 ]
7012 );
7013 });
7014
7015 view.update(cx, |view, cx| {
7016 view.add_selection_above(&AddSelectionAbove, cx);
7017 assert_eq!(
7018 view.selected_display_ranges(cx),
7019 vec![
7020 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7021 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
7022 ]
7023 );
7024 });
7025
7026 view.update(cx, |view, cx| {
7027 view.add_selection_below(&AddSelectionBelow, cx);
7028 assert_eq!(
7029 view.selected_display_ranges(cx),
7030 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
7031 );
7032 });
7033
7034 view.update(cx, |view, cx| {
7035 view.add_selection_below(&AddSelectionBelow, cx);
7036 assert_eq!(
7037 view.selected_display_ranges(cx),
7038 vec![
7039 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7040 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
7041 ]
7042 );
7043 });
7044
7045 view.update(cx, |view, cx| {
7046 view.add_selection_below(&AddSelectionBelow, cx);
7047 assert_eq!(
7048 view.selected_display_ranges(cx),
7049 vec![
7050 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7051 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
7052 ]
7053 );
7054 });
7055
7056 view.update(cx, |view, cx| {
7057 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx);
7058 });
7059 view.update(cx, |view, cx| {
7060 view.add_selection_below(&AddSelectionBelow, cx);
7061 assert_eq!(
7062 view.selected_display_ranges(cx),
7063 vec![
7064 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7065 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
7066 ]
7067 );
7068 });
7069
7070 view.update(cx, |view, cx| {
7071 view.add_selection_below(&AddSelectionBelow, cx);
7072 assert_eq!(
7073 view.selected_display_ranges(cx),
7074 vec![
7075 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7076 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
7077 ]
7078 );
7079 });
7080
7081 view.update(cx, |view, cx| {
7082 view.add_selection_above(&AddSelectionAbove, cx);
7083 assert_eq!(
7084 view.selected_display_ranges(cx),
7085 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
7086 );
7087 });
7088
7089 view.update(cx, |view, cx| {
7090 view.add_selection_above(&AddSelectionAbove, cx);
7091 assert_eq!(
7092 view.selected_display_ranges(cx),
7093 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
7094 );
7095 });
7096
7097 view.update(cx, |view, cx| {
7098 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx);
7099 view.add_selection_below(&AddSelectionBelow, cx);
7100 assert_eq!(
7101 view.selected_display_ranges(cx),
7102 vec![
7103 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7104 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7105 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7106 ]
7107 );
7108 });
7109
7110 view.update(cx, |view, cx| {
7111 view.add_selection_below(&AddSelectionBelow, cx);
7112 assert_eq!(
7113 view.selected_display_ranges(cx),
7114 vec![
7115 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7116 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7117 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7118 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
7119 ]
7120 );
7121 });
7122
7123 view.update(cx, |view, cx| {
7124 view.add_selection_above(&AddSelectionAbove, cx);
7125 assert_eq!(
7126 view.selected_display_ranges(cx),
7127 vec![
7128 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7129 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7130 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7131 ]
7132 );
7133 });
7134
7135 view.update(cx, |view, cx| {
7136 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx);
7137 });
7138 view.update(cx, |view, cx| {
7139 view.add_selection_above(&AddSelectionAbove, cx);
7140 assert_eq!(
7141 view.selected_display_ranges(cx),
7142 vec![
7143 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
7144 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
7145 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
7146 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
7147 ]
7148 );
7149 });
7150
7151 view.update(cx, |view, cx| {
7152 view.add_selection_below(&AddSelectionBelow, cx);
7153 assert_eq!(
7154 view.selected_display_ranges(cx),
7155 vec![
7156 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
7157 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
7158 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
7159 ]
7160 );
7161 });
7162 }
7163
7164 #[gpui::test]
7165 async fn test_select_larger_smaller_syntax_node(mut cx: gpui::TestAppContext) {
7166 let settings = cx.read(EditorSettings::test);
7167 let language = Arc::new(Language::new(
7168 LanguageConfig::default(),
7169 Some(tree_sitter_rust::language()),
7170 ));
7171
7172 let text = r#"
7173 use mod1::mod2::{mod3, mod4};
7174
7175 fn fn_1(param1: bool, param2: &str) {
7176 let var1 = "text";
7177 }
7178 "#
7179 .unindent();
7180
7181 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7182 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7183 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7184 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
7185 .await;
7186
7187 view.update(&mut cx, |view, cx| {
7188 view.select_display_ranges(
7189 &[
7190 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7191 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7192 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7193 ],
7194 cx,
7195 );
7196 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7197 });
7198 assert_eq!(
7199 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7200 &[
7201 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
7202 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7203 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
7204 ]
7205 );
7206
7207 view.update(&mut cx, |view, cx| {
7208 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7209 });
7210 assert_eq!(
7211 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7212 &[
7213 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
7214 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
7215 ]
7216 );
7217
7218 view.update(&mut cx, |view, cx| {
7219 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7220 });
7221 assert_eq!(
7222 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7223 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
7224 );
7225
7226 // Trying to expand the selected syntax node one more time has no effect.
7227 view.update(&mut cx, |view, cx| {
7228 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7229 });
7230 assert_eq!(
7231 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7232 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
7233 );
7234
7235 view.update(&mut cx, |view, cx| {
7236 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7237 });
7238 assert_eq!(
7239 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7240 &[
7241 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
7242 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
7243 ]
7244 );
7245
7246 view.update(&mut cx, |view, cx| {
7247 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7248 });
7249 assert_eq!(
7250 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7251 &[
7252 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
7253 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7254 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
7255 ]
7256 );
7257
7258 view.update(&mut cx, |view, cx| {
7259 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7260 });
7261 assert_eq!(
7262 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7263 &[
7264 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7265 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7266 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7267 ]
7268 );
7269
7270 // Trying to shrink the selected syntax node one more time has no effect.
7271 view.update(&mut cx, |view, cx| {
7272 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7273 });
7274 assert_eq!(
7275 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7276 &[
7277 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7278 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7279 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7280 ]
7281 );
7282
7283 // Ensure that we keep expanding the selection if the larger selection starts or ends within
7284 // a fold.
7285 view.update(&mut cx, |view, cx| {
7286 view.fold_ranges(
7287 vec![
7288 Point::new(0, 21)..Point::new(0, 24),
7289 Point::new(3, 20)..Point::new(3, 22),
7290 ],
7291 cx,
7292 );
7293 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7294 });
7295 assert_eq!(
7296 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7297 &[
7298 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
7299 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7300 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
7301 ]
7302 );
7303 }
7304
7305 #[gpui::test]
7306 async fn test_autoindent_selections(mut cx: gpui::TestAppContext) {
7307 let settings = cx.read(EditorSettings::test);
7308 let language = Arc::new(
7309 Language::new(
7310 LanguageConfig {
7311 brackets: vec![
7312 BracketPair {
7313 start: "{".to_string(),
7314 end: "}".to_string(),
7315 close: false,
7316 newline: true,
7317 },
7318 BracketPair {
7319 start: "(".to_string(),
7320 end: ")".to_string(),
7321 close: false,
7322 newline: true,
7323 },
7324 ],
7325 ..Default::default()
7326 },
7327 Some(tree_sitter_rust::language()),
7328 )
7329 .with_indents_query(
7330 r#"
7331 (_ "(" ")" @end) @indent
7332 (_ "{" "}" @end) @indent
7333 "#,
7334 )
7335 .unwrap(),
7336 );
7337
7338 let text = "fn a() {}";
7339
7340 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7341 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7342 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7343 editor
7344 .condition(&cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
7345 .await;
7346
7347 editor.update(&mut cx, |editor, cx| {
7348 editor.select_ranges([5..5, 8..8, 9..9], None, cx);
7349 editor.newline(&Newline, cx);
7350 assert_eq!(editor.text(cx), "fn a(\n \n) {\n \n}\n");
7351 assert_eq!(
7352 editor.selected_ranges(cx),
7353 &[
7354 Point::new(1, 4)..Point::new(1, 4),
7355 Point::new(3, 4)..Point::new(3, 4),
7356 Point::new(5, 0)..Point::new(5, 0)
7357 ]
7358 );
7359 });
7360 }
7361
7362 #[gpui::test]
7363 async fn test_autoclose_pairs(mut cx: gpui::TestAppContext) {
7364 let settings = cx.read(EditorSettings::test);
7365 let language = Arc::new(Language::new(
7366 LanguageConfig {
7367 brackets: vec![
7368 BracketPair {
7369 start: "{".to_string(),
7370 end: "}".to_string(),
7371 close: true,
7372 newline: true,
7373 },
7374 BracketPair {
7375 start: "/*".to_string(),
7376 end: " */".to_string(),
7377 close: true,
7378 newline: true,
7379 },
7380 ],
7381 ..Default::default()
7382 },
7383 Some(tree_sitter_rust::language()),
7384 ));
7385
7386 let text = r#"
7387 a
7388
7389 /
7390
7391 "#
7392 .unindent();
7393
7394 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7395 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7396 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7397 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
7398 .await;
7399
7400 view.update(&mut cx, |view, cx| {
7401 view.select_display_ranges(
7402 &[
7403 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7404 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7405 ],
7406 cx,
7407 );
7408 view.handle_input(&Input("{".to_string()), cx);
7409 view.handle_input(&Input("{".to_string()), cx);
7410 view.handle_input(&Input("{".to_string()), cx);
7411 assert_eq!(
7412 view.text(cx),
7413 "
7414 {{{}}}
7415 {{{}}}
7416 /
7417
7418 "
7419 .unindent()
7420 );
7421
7422 view.move_right(&MoveRight, cx);
7423 view.handle_input(&Input("}".to_string()), cx);
7424 view.handle_input(&Input("}".to_string()), cx);
7425 view.handle_input(&Input("}".to_string()), cx);
7426 assert_eq!(
7427 view.text(cx),
7428 "
7429 {{{}}}}
7430 {{{}}}}
7431 /
7432
7433 "
7434 .unindent()
7435 );
7436
7437 view.undo(&Undo, cx);
7438 view.handle_input(&Input("/".to_string()), cx);
7439 view.handle_input(&Input("*".to_string()), cx);
7440 assert_eq!(
7441 view.text(cx),
7442 "
7443 /* */
7444 /* */
7445 /
7446
7447 "
7448 .unindent()
7449 );
7450
7451 view.undo(&Undo, cx);
7452 view.select_display_ranges(
7453 &[
7454 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7455 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7456 ],
7457 cx,
7458 );
7459 view.handle_input(&Input("*".to_string()), cx);
7460 assert_eq!(
7461 view.text(cx),
7462 "
7463 a
7464
7465 /*
7466 *
7467 "
7468 .unindent()
7469 );
7470 });
7471 }
7472
7473 #[gpui::test]
7474 async fn test_snippets(mut cx: gpui::TestAppContext) {
7475 let settings = cx.read(EditorSettings::test);
7476
7477 let text = "
7478 a. b
7479 a. b
7480 a. b
7481 "
7482 .unindent();
7483 let buffer = cx.update(|cx| MultiBuffer::build_simple(&text, cx));
7484 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7485
7486 editor.update(&mut cx, |editor, cx| {
7487 let buffer = &editor.snapshot(cx).buffer_snapshot;
7488 let snippet = Snippet::parse("f(${1:one}, ${2:two}, ${1:three})$0").unwrap();
7489 let insertion_ranges = [
7490 Point::new(0, 2).to_offset(buffer)..Point::new(0, 2).to_offset(buffer),
7491 Point::new(1, 2).to_offset(buffer)..Point::new(1, 2).to_offset(buffer),
7492 Point::new(2, 2).to_offset(buffer)..Point::new(2, 2).to_offset(buffer),
7493 ];
7494
7495 editor
7496 .insert_snippet(&insertion_ranges, snippet, cx)
7497 .unwrap();
7498 assert_eq!(
7499 editor.text(cx),
7500 "
7501 a.f(one, two, three) b
7502 a.f(one, two, three) b
7503 a.f(one, two, three) b
7504 "
7505 .unindent()
7506 );
7507 assert_eq!(
7508 editor.selected_ranges::<Point>(cx),
7509 &[
7510 Point::new(0, 4)..Point::new(0, 7),
7511 Point::new(0, 14)..Point::new(0, 19),
7512 Point::new(1, 4)..Point::new(1, 7),
7513 Point::new(1, 14)..Point::new(1, 19),
7514 Point::new(2, 4)..Point::new(2, 7),
7515 Point::new(2, 14)..Point::new(2, 19),
7516 ]
7517 );
7518
7519 // Can't move earlier than the first tab stop
7520 editor.move_to_prev_snippet_tabstop(cx);
7521 assert_eq!(
7522 editor.selected_ranges::<Point>(cx),
7523 &[
7524 Point::new(0, 4)..Point::new(0, 7),
7525 Point::new(0, 14)..Point::new(0, 19),
7526 Point::new(1, 4)..Point::new(1, 7),
7527 Point::new(1, 14)..Point::new(1, 19),
7528 Point::new(2, 4)..Point::new(2, 7),
7529 Point::new(2, 14)..Point::new(2, 19),
7530 ]
7531 );
7532
7533 assert!(editor.move_to_next_snippet_tabstop(cx));
7534 assert_eq!(
7535 editor.selected_ranges::<Point>(cx),
7536 &[
7537 Point::new(0, 9)..Point::new(0, 12),
7538 Point::new(1, 9)..Point::new(1, 12),
7539 Point::new(2, 9)..Point::new(2, 12)
7540 ]
7541 );
7542
7543 editor.move_to_prev_snippet_tabstop(cx);
7544 assert_eq!(
7545 editor.selected_ranges::<Point>(cx),
7546 &[
7547 Point::new(0, 4)..Point::new(0, 7),
7548 Point::new(0, 14)..Point::new(0, 19),
7549 Point::new(1, 4)..Point::new(1, 7),
7550 Point::new(1, 14)..Point::new(1, 19),
7551 Point::new(2, 4)..Point::new(2, 7),
7552 Point::new(2, 14)..Point::new(2, 19),
7553 ]
7554 );
7555
7556 assert!(editor.move_to_next_snippet_tabstop(cx));
7557 assert!(editor.move_to_next_snippet_tabstop(cx));
7558 assert_eq!(
7559 editor.selected_ranges::<Point>(cx),
7560 &[
7561 Point::new(0, 20)..Point::new(0, 20),
7562 Point::new(1, 20)..Point::new(1, 20),
7563 Point::new(2, 20)..Point::new(2, 20)
7564 ]
7565 );
7566
7567 // As soon as the last tab stop is reached, snippet state is gone
7568 editor.move_to_prev_snippet_tabstop(cx);
7569 assert_eq!(
7570 editor.selected_ranges::<Point>(cx),
7571 &[
7572 Point::new(0, 20)..Point::new(0, 20),
7573 Point::new(1, 20)..Point::new(1, 20),
7574 Point::new(2, 20)..Point::new(2, 20)
7575 ]
7576 );
7577 });
7578 }
7579
7580 #[gpui::test]
7581 async fn test_completion(mut cx: gpui::TestAppContext) {
7582 let settings = cx.read(EditorSettings::test);
7583 let (language_server, mut fake) = lsp::LanguageServer::fake_with_capabilities(
7584 lsp::ServerCapabilities {
7585 completion_provider: Some(lsp::CompletionOptions {
7586 trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
7587 ..Default::default()
7588 }),
7589 ..Default::default()
7590 },
7591 &cx,
7592 )
7593 .await;
7594
7595 let text = "
7596 one
7597 two
7598 three
7599 "
7600 .unindent();
7601
7602 let fs = Arc::new(FakeFs::new(cx.background().clone()));
7603 fs.insert_file("/file", text).await.unwrap();
7604
7605 let project = Project::test(fs, &mut cx);
7606
7607 let (worktree, relative_path) = project
7608 .update(&mut cx, |project, cx| {
7609 project.find_or_create_local_worktree("/file", false, cx)
7610 })
7611 .await
7612 .unwrap();
7613 let project_path = ProjectPath {
7614 worktree_id: worktree.read_with(&cx, |worktree, _| worktree.id()),
7615 path: relative_path.into(),
7616 };
7617 let buffer = project
7618 .update(&mut cx, |project, cx| project.open_buffer(project_path, cx))
7619 .await
7620 .unwrap();
7621 buffer.update(&mut cx, |buffer, cx| {
7622 buffer.set_language_server(Some(language_server), cx);
7623 });
7624
7625 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7626 buffer.next_notification(&cx).await;
7627
7628 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7629
7630 editor.update(&mut cx, |editor, cx| {
7631 editor.project = Some(project);
7632 editor.select_ranges([Point::new(0, 3)..Point::new(0, 3)], None, cx);
7633 editor.handle_input(&Input(".".to_string()), cx);
7634 });
7635
7636 handle_completion_request(
7637 &mut fake,
7638 "/file",
7639 Point::new(0, 4),
7640 &[
7641 (Point::new(0, 4)..Point::new(0, 4), "first_completion"),
7642 (Point::new(0, 4)..Point::new(0, 4), "second_completion"),
7643 ],
7644 )
7645 .await;
7646 editor.next_notification(&cx).await;
7647
7648 let apply_additional_edits = editor.update(&mut cx, |editor, cx| {
7649 editor.move_down(&MoveDown, cx);
7650 let apply_additional_edits = editor
7651 .confirm_completion(&ConfirmCompletion(None), cx)
7652 .unwrap();
7653 assert_eq!(
7654 editor.text(cx),
7655 "
7656 one.second_completion
7657 two
7658 three
7659 "
7660 .unindent()
7661 );
7662 apply_additional_edits
7663 });
7664
7665 handle_resolve_completion_request(
7666 &mut fake,
7667 Some((Point::new(2, 5)..Point::new(2, 5), "\nadditional edit")),
7668 )
7669 .await;
7670 apply_additional_edits.await.unwrap();
7671 assert_eq!(
7672 editor.read_with(&cx, |editor, cx| editor.text(cx)),
7673 "
7674 one.second_completion
7675 two
7676 three
7677 additional edit
7678 "
7679 .unindent()
7680 );
7681
7682 editor.update(&mut cx, |editor, cx| {
7683 editor.select_ranges(
7684 [
7685 Point::new(1, 3)..Point::new(1, 3),
7686 Point::new(2, 5)..Point::new(2, 5),
7687 ],
7688 None,
7689 cx,
7690 );
7691
7692 editor.handle_input(&Input(" ".to_string()), cx);
7693 assert!(editor.context_menu.is_none());
7694 editor.handle_input(&Input("s".to_string()), cx);
7695 assert!(editor.context_menu.is_none());
7696 });
7697
7698 handle_completion_request(
7699 &mut fake,
7700 "/file",
7701 Point::new(2, 7),
7702 &[
7703 (Point::new(2, 6)..Point::new(2, 7), "fourth_completion"),
7704 (Point::new(2, 6)..Point::new(2, 7), "fifth_completion"),
7705 (Point::new(2, 6)..Point::new(2, 7), "sixth_completion"),
7706 ],
7707 )
7708 .await;
7709 editor
7710 .condition(&cx, |editor, _| editor.context_menu.is_some())
7711 .await;
7712
7713 editor.update(&mut cx, |editor, cx| {
7714 editor.handle_input(&Input("i".to_string()), cx);
7715 });
7716
7717 handle_completion_request(
7718 &mut fake,
7719 "/file",
7720 Point::new(2, 8),
7721 &[
7722 (Point::new(2, 6)..Point::new(2, 8), "fourth_completion"),
7723 (Point::new(2, 6)..Point::new(2, 8), "fifth_completion"),
7724 (Point::new(2, 6)..Point::new(2, 8), "sixth_completion"),
7725 ],
7726 )
7727 .await;
7728 editor.next_notification(&cx).await;
7729
7730 let apply_additional_edits = editor.update(&mut cx, |editor, cx| {
7731 let apply_additional_edits = editor
7732 .confirm_completion(&ConfirmCompletion(None), cx)
7733 .unwrap();
7734 assert_eq!(
7735 editor.text(cx),
7736 "
7737 one.second_completion
7738 two sixth_completion
7739 three sixth_completion
7740 additional edit
7741 "
7742 .unindent()
7743 );
7744 apply_additional_edits
7745 });
7746 handle_resolve_completion_request(&mut fake, None).await;
7747 apply_additional_edits.await.unwrap();
7748
7749 async fn handle_completion_request(
7750 fake: &mut FakeLanguageServer,
7751 path: &str,
7752 position: Point,
7753 completions: &[(Range<Point>, &str)],
7754 ) {
7755 let (id, params) = fake.receive_request::<lsp::request::Completion>().await;
7756 assert_eq!(
7757 params.text_document_position.text_document.uri,
7758 lsp::Url::from_file_path(path).unwrap()
7759 );
7760 assert_eq!(
7761 params.text_document_position.position,
7762 lsp::Position::new(position.row, position.column)
7763 );
7764
7765 let completions = completions
7766 .iter()
7767 .map(|(range, new_text)| lsp::CompletionItem {
7768 label: new_text.to_string(),
7769 text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
7770 range: lsp::Range::new(
7771 lsp::Position::new(range.start.row, range.start.column),
7772 lsp::Position::new(range.start.row, range.start.column),
7773 ),
7774 new_text: new_text.to_string(),
7775 })),
7776 ..Default::default()
7777 })
7778 .collect();
7779 fake.respond(id, Some(lsp::CompletionResponse::Array(completions)))
7780 .await;
7781 }
7782
7783 async fn handle_resolve_completion_request(
7784 fake: &mut FakeLanguageServer,
7785 edit: Option<(Range<Point>, &str)>,
7786 ) {
7787 let (id, _) = fake
7788 .receive_request::<lsp::request::ResolveCompletionItem>()
7789 .await;
7790 fake.respond(
7791 id,
7792 lsp::CompletionItem {
7793 additional_text_edits: edit.map(|(range, new_text)| {
7794 vec![lsp::TextEdit::new(
7795 lsp::Range::new(
7796 lsp::Position::new(range.start.row, range.start.column),
7797 lsp::Position::new(range.end.row, range.end.column),
7798 ),
7799 new_text.to_string(),
7800 )]
7801 }),
7802 ..Default::default()
7803 },
7804 )
7805 .await;
7806 }
7807 }
7808
7809 #[gpui::test]
7810 async fn test_toggle_comment(mut cx: gpui::TestAppContext) {
7811 let settings = cx.read(EditorSettings::test);
7812 let language = Arc::new(Language::new(
7813 LanguageConfig {
7814 line_comment: Some("// ".to_string()),
7815 ..Default::default()
7816 },
7817 Some(tree_sitter_rust::language()),
7818 ));
7819
7820 let text = "
7821 fn a() {
7822 //b();
7823 // c();
7824 // d();
7825 }
7826 "
7827 .unindent();
7828
7829 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7830 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7831 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7832
7833 view.update(&mut cx, |editor, cx| {
7834 // If multiple selections intersect a line, the line is only
7835 // toggled once.
7836 editor.select_display_ranges(
7837 &[
7838 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
7839 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
7840 ],
7841 cx,
7842 );
7843 editor.toggle_comments(&ToggleComments, cx);
7844 assert_eq!(
7845 editor.text(cx),
7846 "
7847 fn a() {
7848 b();
7849 c();
7850 d();
7851 }
7852 "
7853 .unindent()
7854 );
7855
7856 // The comment prefix is inserted at the same column for every line
7857 // in a selection.
7858 editor.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx);
7859 editor.toggle_comments(&ToggleComments, cx);
7860 assert_eq!(
7861 editor.text(cx),
7862 "
7863 fn a() {
7864 // b();
7865 // c();
7866 // d();
7867 }
7868 "
7869 .unindent()
7870 );
7871
7872 // If a selection ends at the beginning of a line, that line is not toggled.
7873 editor.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx);
7874 editor.toggle_comments(&ToggleComments, cx);
7875 assert_eq!(
7876 editor.text(cx),
7877 "
7878 fn a() {
7879 // b();
7880 c();
7881 // d();
7882 }
7883 "
7884 .unindent()
7885 );
7886 });
7887 }
7888
7889 #[gpui::test]
7890 fn test_editing_disjoint_excerpts(cx: &mut gpui::MutableAppContext) {
7891 let settings = EditorSettings::test(cx);
7892 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
7893 let multibuffer = cx.add_model(|cx| {
7894 let mut multibuffer = MultiBuffer::new(0);
7895 multibuffer.push_excerpts(
7896 buffer.clone(),
7897 [
7898 Point::new(0, 0)..Point::new(0, 4),
7899 Point::new(1, 0)..Point::new(1, 4),
7900 ],
7901 cx,
7902 );
7903 multibuffer
7904 });
7905
7906 assert_eq!(multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb");
7907
7908 let (_, view) = cx.add_window(Default::default(), |cx| {
7909 build_editor(multibuffer, settings, cx)
7910 });
7911 view.update(cx, |view, cx| {
7912 assert_eq!(view.text(cx), "aaaa\nbbbb");
7913 view.select_ranges(
7914 [
7915 Point::new(0, 0)..Point::new(0, 0),
7916 Point::new(1, 0)..Point::new(1, 0),
7917 ],
7918 None,
7919 cx,
7920 );
7921
7922 view.handle_input(&Input("X".to_string()), cx);
7923 assert_eq!(view.text(cx), "Xaaaa\nXbbbb");
7924 assert_eq!(
7925 view.selected_ranges(cx),
7926 [
7927 Point::new(0, 1)..Point::new(0, 1),
7928 Point::new(1, 1)..Point::new(1, 1),
7929 ]
7930 )
7931 });
7932 }
7933
7934 #[gpui::test]
7935 fn test_editing_overlapping_excerpts(cx: &mut gpui::MutableAppContext) {
7936 let settings = EditorSettings::test(cx);
7937 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
7938 let multibuffer = cx.add_model(|cx| {
7939 let mut multibuffer = MultiBuffer::new(0);
7940 multibuffer.push_excerpts(
7941 buffer,
7942 [
7943 Point::new(0, 0)..Point::new(1, 4),
7944 Point::new(1, 0)..Point::new(2, 4),
7945 ],
7946 cx,
7947 );
7948 multibuffer
7949 });
7950
7951 assert_eq!(
7952 multibuffer.read(cx).read(cx).text(),
7953 "aaaa\nbbbb\nbbbb\ncccc"
7954 );
7955
7956 let (_, view) = cx.add_window(Default::default(), |cx| {
7957 build_editor(multibuffer, settings, cx)
7958 });
7959 view.update(cx, |view, cx| {
7960 view.select_ranges(
7961 [
7962 Point::new(1, 1)..Point::new(1, 1),
7963 Point::new(2, 3)..Point::new(2, 3),
7964 ],
7965 None,
7966 cx,
7967 );
7968
7969 view.handle_input(&Input("X".to_string()), cx);
7970 assert_eq!(view.text(cx), "aaaa\nbXbbXb\nbXbbXb\ncccc");
7971 assert_eq!(
7972 view.selected_ranges(cx),
7973 [
7974 Point::new(1, 2)..Point::new(1, 2),
7975 Point::new(2, 5)..Point::new(2, 5),
7976 ]
7977 );
7978
7979 view.newline(&Newline, cx);
7980 assert_eq!(view.text(cx), "aaaa\nbX\nbbX\nb\nbX\nbbX\nb\ncccc");
7981 assert_eq!(
7982 view.selected_ranges(cx),
7983 [
7984 Point::new(2, 0)..Point::new(2, 0),
7985 Point::new(6, 0)..Point::new(6, 0),
7986 ]
7987 );
7988 });
7989 }
7990
7991 #[gpui::test]
7992 fn test_refresh_selections(cx: &mut gpui::MutableAppContext) {
7993 let settings = EditorSettings::test(cx);
7994 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
7995 let mut excerpt1_id = None;
7996 let multibuffer = cx.add_model(|cx| {
7997 let mut multibuffer = MultiBuffer::new(0);
7998 excerpt1_id = multibuffer
7999 .push_excerpts(
8000 buffer.clone(),
8001 [
8002 Point::new(0, 0)..Point::new(1, 4),
8003 Point::new(1, 0)..Point::new(2, 4),
8004 ],
8005 cx,
8006 )
8007 .into_iter()
8008 .next();
8009 multibuffer
8010 });
8011 assert_eq!(
8012 multibuffer.read(cx).read(cx).text(),
8013 "aaaa\nbbbb\nbbbb\ncccc"
8014 );
8015 let (_, editor) = cx.add_window(Default::default(), |cx| {
8016 let mut editor = build_editor(multibuffer.clone(), settings, cx);
8017 editor.select_ranges(
8018 [
8019 Point::new(1, 3)..Point::new(1, 3),
8020 Point::new(2, 1)..Point::new(2, 1),
8021 ],
8022 None,
8023 cx,
8024 );
8025 editor
8026 });
8027
8028 // Refreshing selections is a no-op when excerpts haven't changed.
8029 editor.update(cx, |editor, cx| {
8030 editor.refresh_selections(cx);
8031 assert_eq!(
8032 editor.selected_ranges(cx),
8033 [
8034 Point::new(1, 3)..Point::new(1, 3),
8035 Point::new(2, 1)..Point::new(2, 1),
8036 ]
8037 );
8038 });
8039
8040 multibuffer.update(cx, |multibuffer, cx| {
8041 multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx);
8042 });
8043 editor.update(cx, |editor, cx| {
8044 // Removing an excerpt causes the first selection to become degenerate.
8045 assert_eq!(
8046 editor.selected_ranges(cx),
8047 [
8048 Point::new(0, 0)..Point::new(0, 0),
8049 Point::new(0, 1)..Point::new(0, 1)
8050 ]
8051 );
8052
8053 // Refreshing selections will relocate the first selection to the original buffer
8054 // location.
8055 editor.refresh_selections(cx);
8056 assert_eq!(
8057 editor.selected_ranges(cx),
8058 [
8059 Point::new(0, 1)..Point::new(0, 1),
8060 Point::new(0, 3)..Point::new(0, 3)
8061 ]
8062 );
8063 });
8064 }
8065
8066 #[gpui::test]
8067 async fn test_extra_newline_insertion(mut cx: gpui::TestAppContext) {
8068 let settings = cx.read(EditorSettings::test);
8069 let language = Arc::new(Language::new(
8070 LanguageConfig {
8071 brackets: vec![
8072 BracketPair {
8073 start: "{".to_string(),
8074 end: "}".to_string(),
8075 close: true,
8076 newline: true,
8077 },
8078 BracketPair {
8079 start: "/* ".to_string(),
8080 end: " */".to_string(),
8081 close: true,
8082 newline: true,
8083 },
8084 ],
8085 ..Default::default()
8086 },
8087 Some(tree_sitter_rust::language()),
8088 ));
8089
8090 let text = concat!(
8091 "{ }\n", // Suppress rustfmt
8092 " x\n", //
8093 " /* */\n", //
8094 "x\n", //
8095 "{{} }\n", //
8096 );
8097
8098 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8099 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8100 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8101 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
8102 .await;
8103
8104 view.update(&mut cx, |view, cx| {
8105 view.select_display_ranges(
8106 &[
8107 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
8108 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
8109 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
8110 ],
8111 cx,
8112 );
8113 view.newline(&Newline, cx);
8114
8115 assert_eq!(
8116 view.buffer().read(cx).read(cx).text(),
8117 concat!(
8118 "{ \n", // Suppress rustfmt
8119 "\n", //
8120 "}\n", //
8121 " x\n", //
8122 " /* \n", //
8123 " \n", //
8124 " */\n", //
8125 "x\n", //
8126 "{{} \n", //
8127 "}\n", //
8128 )
8129 );
8130 });
8131 }
8132
8133 #[gpui::test]
8134 fn test_highlighted_ranges(cx: &mut gpui::MutableAppContext) {
8135 let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
8136 let settings = EditorSettings::test(&cx);
8137 let (_, editor) = cx.add_window(Default::default(), |cx| {
8138 build_editor(buffer.clone(), settings, cx)
8139 });
8140
8141 editor.update(cx, |editor, cx| {
8142 struct Type1;
8143 struct Type2;
8144
8145 let buffer = buffer.read(cx).snapshot(cx);
8146
8147 let anchor_range = |range: Range<Point>| {
8148 buffer.anchor_after(range.start)..buffer.anchor_after(range.end)
8149 };
8150
8151 editor.highlight_ranges::<Type1>(
8152 vec![
8153 anchor_range(Point::new(2, 1)..Point::new(2, 3)),
8154 anchor_range(Point::new(4, 2)..Point::new(4, 4)),
8155 anchor_range(Point::new(6, 3)..Point::new(6, 5)),
8156 anchor_range(Point::new(8, 4)..Point::new(8, 6)),
8157 ],
8158 Color::red(),
8159 cx,
8160 );
8161 editor.highlight_ranges::<Type2>(
8162 vec![
8163 anchor_range(Point::new(3, 2)..Point::new(3, 5)),
8164 anchor_range(Point::new(5, 3)..Point::new(5, 6)),
8165 anchor_range(Point::new(7, 4)..Point::new(7, 7)),
8166 anchor_range(Point::new(9, 5)..Point::new(9, 8)),
8167 ],
8168 Color::green(),
8169 cx,
8170 );
8171
8172 let snapshot = editor.snapshot(cx);
8173 let mut highlighted_ranges = editor.highlighted_ranges_in_range(
8174 anchor_range(Point::new(3, 4)..Point::new(7, 4)),
8175 &snapshot,
8176 );
8177 // Enforce a consistent ordering based on color without relying on the ordering of the
8178 // highlight's `TypeId` which is non-deterministic.
8179 highlighted_ranges.sort_unstable_by_key(|(_, color)| *color);
8180 assert_eq!(
8181 highlighted_ranges,
8182 &[
8183 (
8184 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 5),
8185 Color::green(),
8186 ),
8187 (
8188 DisplayPoint::new(5, 3)..DisplayPoint::new(5, 6),
8189 Color::green(),
8190 ),
8191 (
8192 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 4),
8193 Color::red(),
8194 ),
8195 (
8196 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
8197 Color::red(),
8198 ),
8199 ]
8200 );
8201 assert_eq!(
8202 editor.highlighted_ranges_in_range(
8203 anchor_range(Point::new(5, 6)..Point::new(6, 4)),
8204 &snapshot,
8205 ),
8206 &[(
8207 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
8208 Color::red(),
8209 )]
8210 );
8211 });
8212 }
8213
8214 #[test]
8215 fn test_combine_syntax_and_fuzzy_match_highlights() {
8216 let string = "abcdefghijklmnop";
8217 let default = HighlightStyle::default();
8218 let syntax_ranges = [
8219 (
8220 0..3,
8221 HighlightStyle {
8222 color: Color::red(),
8223 ..default
8224 },
8225 ),
8226 (
8227 4..8,
8228 HighlightStyle {
8229 color: Color::green(),
8230 ..default
8231 },
8232 ),
8233 ];
8234 let match_indices = [4, 6, 7, 8];
8235 assert_eq!(
8236 combine_syntax_and_fuzzy_match_highlights(
8237 &string,
8238 default,
8239 syntax_ranges.into_iter(),
8240 &match_indices,
8241 ),
8242 &[
8243 (
8244 0..3,
8245 HighlightStyle {
8246 color: Color::red(),
8247 ..default
8248 },
8249 ),
8250 (
8251 4..5,
8252 HighlightStyle {
8253 color: Color::green(),
8254 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
8255 ..default
8256 },
8257 ),
8258 (
8259 5..6,
8260 HighlightStyle {
8261 color: Color::green(),
8262 ..default
8263 },
8264 ),
8265 (
8266 6..8,
8267 HighlightStyle {
8268 color: Color::green(),
8269 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
8270 ..default
8271 },
8272 ),
8273 (
8274 8..9,
8275 HighlightStyle {
8276 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
8277 ..default
8278 },
8279 ),
8280 ]
8281 );
8282 }
8283
8284 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
8285 let point = DisplayPoint::new(row as u32, column as u32);
8286 point..point
8287 }
8288
8289 fn build_editor(
8290 buffer: ModelHandle<MultiBuffer>,
8291 settings: EditorSettings,
8292 cx: &mut ViewContext<Editor>,
8293 ) -> Editor {
8294 Editor::for_buffer(buffer, Arc::new(move |_| settings.clone()), None, cx)
8295 }
8296}
8297
8298trait RangeExt<T> {
8299 fn sorted(&self) -> Range<T>;
8300 fn to_inclusive(&self) -> RangeInclusive<T>;
8301}
8302
8303impl<T: Ord + Clone> RangeExt<T> for Range<T> {
8304 fn sorted(&self) -> Self {
8305 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
8306 }
8307
8308 fn to_inclusive(&self) -> RangeInclusive<T> {
8309 self.start.clone()..=self.end.clone()
8310 }
8311}