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 self.buffer().read(cx).title(cx)
887 }
888
889 pub fn snapshot(&mut self, cx: &mut MutableAppContext) -> EditorSnapshot {
890 EditorSnapshot {
891 mode: self.mode,
892 display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
893 scroll_position: self.scroll_position,
894 scroll_top_anchor: self.scroll_top_anchor.clone(),
895 placeholder_text: self.placeholder_text.clone(),
896 is_focused: self
897 .handle
898 .upgrade(cx)
899 .map_or(false, |handle| handle.is_focused(cx)),
900 }
901 }
902
903 pub fn language<'a>(&self, cx: &'a AppContext) -> Option<&'a Arc<Language>> {
904 self.buffer.read(cx).language(cx)
905 }
906
907 pub fn set_placeholder_text(
908 &mut self,
909 placeholder_text: impl Into<Arc<str>>,
910 cx: &mut ViewContext<Self>,
911 ) {
912 self.placeholder_text = Some(placeholder_text.into());
913 cx.notify();
914 }
915
916 pub fn set_vertical_scroll_margin(&mut self, margin_rows: usize, cx: &mut ViewContext<Self>) {
917 self.vertical_scroll_margin = margin_rows as f32;
918 cx.notify();
919 }
920
921 pub fn set_scroll_position(&mut self, scroll_position: Vector2F, cx: &mut ViewContext<Self>) {
922 let map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
923
924 if scroll_position.y() == 0. {
925 self.scroll_top_anchor = None;
926 self.scroll_position = scroll_position;
927 } else {
928 let scroll_top_buffer_offset =
929 DisplayPoint::new(scroll_position.y() as u32, 0).to_offset(&map, Bias::Right);
930 let anchor = map
931 .buffer_snapshot
932 .anchor_at(scroll_top_buffer_offset, Bias::Right);
933 self.scroll_position = vec2f(
934 scroll_position.x(),
935 scroll_position.y() - anchor.to_display_point(&map).row() as f32,
936 );
937 self.scroll_top_anchor = Some(anchor);
938 }
939
940 cx.notify();
941 }
942
943 pub fn scroll_position(&self, cx: &mut ViewContext<Self>) -> Vector2F {
944 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
945 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor)
946 }
947
948 pub fn clamp_scroll_left(&mut self, max: f32) -> bool {
949 if max < self.scroll_position.x() {
950 self.scroll_position.set_x(max);
951 true
952 } else {
953 false
954 }
955 }
956
957 pub fn autoscroll_vertically(
958 &mut self,
959 viewport_height: f32,
960 line_height: f32,
961 cx: &mut ViewContext<Self>,
962 ) -> bool {
963 let visible_lines = viewport_height / line_height;
964 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
965 let mut scroll_position =
966 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor);
967 let max_scroll_top = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
968 (display_map.max_point().row() as f32 - visible_lines + 1.).max(0.)
969 } else {
970 display_map.max_point().row().saturating_sub(1) as f32
971 };
972 if scroll_position.y() > max_scroll_top {
973 scroll_position.set_y(max_scroll_top);
974 self.set_scroll_position(scroll_position, cx);
975 }
976
977 let autoscroll = if let Some(autoscroll) = self.autoscroll_request.take() {
978 autoscroll
979 } else {
980 return false;
981 };
982
983 let first_cursor_top;
984 let last_cursor_bottom;
985 if let Some(highlighted_rows) = &self.highlighted_rows {
986 first_cursor_top = highlighted_rows.start as f32;
987 last_cursor_bottom = first_cursor_top + 1.;
988 } else if autoscroll == Autoscroll::Newest {
989 let newest_selection = self.newest_selection::<Point>(&display_map.buffer_snapshot);
990 first_cursor_top = newest_selection.head().to_display_point(&display_map).row() as f32;
991 last_cursor_bottom = first_cursor_top + 1.;
992 } else {
993 let selections = self.local_selections::<Point>(cx);
994 first_cursor_top = selections
995 .first()
996 .unwrap()
997 .head()
998 .to_display_point(&display_map)
999 .row() as f32;
1000 last_cursor_bottom = selections
1001 .last()
1002 .unwrap()
1003 .head()
1004 .to_display_point(&display_map)
1005 .row() as f32
1006 + 1.0;
1007 }
1008
1009 let margin = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
1010 0.
1011 } else {
1012 ((visible_lines - (last_cursor_bottom - first_cursor_top)) / 2.0).floor()
1013 };
1014 if margin < 0.0 {
1015 return false;
1016 }
1017
1018 match autoscroll {
1019 Autoscroll::Fit | Autoscroll::Newest => {
1020 let margin = margin.min(self.vertical_scroll_margin);
1021 let target_top = (first_cursor_top - margin).max(0.0);
1022 let target_bottom = last_cursor_bottom + margin;
1023 let start_row = scroll_position.y();
1024 let end_row = start_row + visible_lines;
1025
1026 if target_top < start_row {
1027 scroll_position.set_y(target_top);
1028 self.set_scroll_position(scroll_position, cx);
1029 } else if target_bottom >= end_row {
1030 scroll_position.set_y(target_bottom - visible_lines);
1031 self.set_scroll_position(scroll_position, cx);
1032 }
1033 }
1034 Autoscroll::Center => {
1035 scroll_position.set_y((first_cursor_top - margin).max(0.0));
1036 self.set_scroll_position(scroll_position, cx);
1037 }
1038 }
1039
1040 true
1041 }
1042
1043 pub fn autoscroll_horizontally(
1044 &mut self,
1045 start_row: u32,
1046 viewport_width: f32,
1047 scroll_width: f32,
1048 max_glyph_width: f32,
1049 layouts: &[text_layout::Line],
1050 cx: &mut ViewContext<Self>,
1051 ) -> bool {
1052 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1053 let selections = self.local_selections::<Point>(cx);
1054
1055 let mut target_left;
1056 let mut target_right;
1057
1058 if self.highlighted_rows.is_some() {
1059 target_left = 0.0_f32;
1060 target_right = 0.0_f32;
1061 } else {
1062 target_left = std::f32::INFINITY;
1063 target_right = 0.0_f32;
1064 for selection in selections {
1065 let head = selection.head().to_display_point(&display_map);
1066 if head.row() >= start_row && head.row() < start_row + layouts.len() as u32 {
1067 let start_column = head.column().saturating_sub(3);
1068 let end_column = cmp::min(display_map.line_len(head.row()), head.column() + 3);
1069 target_left = target_left.min(
1070 layouts[(head.row() - start_row) as usize]
1071 .x_for_index(start_column as usize),
1072 );
1073 target_right = target_right.max(
1074 layouts[(head.row() - start_row) as usize].x_for_index(end_column as usize)
1075 + max_glyph_width,
1076 );
1077 }
1078 }
1079 }
1080
1081 target_right = target_right.min(scroll_width);
1082
1083 if target_right - target_left > viewport_width {
1084 return false;
1085 }
1086
1087 let scroll_left = self.scroll_position.x() * max_glyph_width;
1088 let scroll_right = scroll_left + viewport_width;
1089
1090 if target_left < scroll_left {
1091 self.scroll_position.set_x(target_left / max_glyph_width);
1092 true
1093 } else if target_right > scroll_right {
1094 self.scroll_position
1095 .set_x((target_right - viewport_width) / max_glyph_width);
1096 true
1097 } else {
1098 false
1099 }
1100 }
1101
1102 fn select(&mut self, Select(phase): &Select, cx: &mut ViewContext<Self>) {
1103 self.hide_context_menu(cx);
1104
1105 match phase {
1106 SelectPhase::Begin {
1107 position,
1108 add,
1109 click_count,
1110 } => self.begin_selection(*position, *add, *click_count, cx),
1111 SelectPhase::BeginColumnar {
1112 position,
1113 overshoot,
1114 } => self.begin_columnar_selection(*position, *overshoot, cx),
1115 SelectPhase::Extend {
1116 position,
1117 click_count,
1118 } => self.extend_selection(*position, *click_count, cx),
1119 SelectPhase::Update {
1120 position,
1121 overshoot,
1122 scroll_position,
1123 } => self.update_selection(*position, *overshoot, *scroll_position, cx),
1124 SelectPhase::End => self.end_selection(cx),
1125 }
1126 }
1127
1128 fn extend_selection(
1129 &mut self,
1130 position: DisplayPoint,
1131 click_count: usize,
1132 cx: &mut ViewContext<Self>,
1133 ) {
1134 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1135 let tail = self
1136 .newest_selection::<usize>(&display_map.buffer_snapshot)
1137 .tail();
1138 self.begin_selection(position, false, click_count, cx);
1139
1140 let position = position.to_offset(&display_map, Bias::Left);
1141 let tail_anchor = display_map.buffer_snapshot.anchor_before(tail);
1142 let pending = self.pending_selection.as_mut().unwrap();
1143
1144 if position >= tail {
1145 pending.selection.start = tail_anchor.clone();
1146 } else {
1147 pending.selection.end = tail_anchor.clone();
1148 pending.selection.reversed = true;
1149 }
1150
1151 match &mut pending.mode {
1152 SelectMode::Word(range) | SelectMode::Line(range) => {
1153 *range = tail_anchor.clone()..tail_anchor
1154 }
1155 _ => {}
1156 }
1157 }
1158
1159 fn begin_selection(
1160 &mut self,
1161 position: DisplayPoint,
1162 add: bool,
1163 click_count: usize,
1164 cx: &mut ViewContext<Self>,
1165 ) {
1166 if !self.focused {
1167 cx.focus_self();
1168 cx.emit(Event::Activate);
1169 }
1170
1171 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1172 let buffer = &display_map.buffer_snapshot;
1173 let newest_selection = self.newest_anchor_selection().unwrap().clone();
1174
1175 let start;
1176 let end;
1177 let mode;
1178 match click_count {
1179 1 => {
1180 start = buffer.anchor_before(position.to_point(&display_map));
1181 end = start.clone();
1182 mode = SelectMode::Character;
1183 }
1184 2 => {
1185 let range = movement::surrounding_word(&display_map, position);
1186 start = buffer.anchor_before(range.start.to_point(&display_map));
1187 end = buffer.anchor_before(range.end.to_point(&display_map));
1188 mode = SelectMode::Word(start.clone()..end.clone());
1189 }
1190 3 => {
1191 let position = display_map
1192 .clip_point(position, Bias::Left)
1193 .to_point(&display_map);
1194 let line_start = display_map.prev_line_boundary(position).0;
1195 let next_line_start = buffer.clip_point(
1196 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1197 Bias::Left,
1198 );
1199 start = buffer.anchor_before(line_start);
1200 end = buffer.anchor_before(next_line_start);
1201 mode = SelectMode::Line(start.clone()..end.clone());
1202 }
1203 _ => {
1204 start = buffer.anchor_before(0);
1205 end = buffer.anchor_before(buffer.len());
1206 mode = SelectMode::All;
1207 }
1208 }
1209
1210 self.push_to_nav_history(newest_selection.head(), Some(end.to_point(&buffer)), cx);
1211
1212 let selection = Selection {
1213 id: post_inc(&mut self.next_selection_id),
1214 start,
1215 end,
1216 reversed: false,
1217 goal: SelectionGoal::None,
1218 };
1219
1220 if !add {
1221 self.update_selections::<usize>(Vec::new(), None, cx);
1222 } else if click_count > 1 {
1223 // Remove the newest selection since it was only added as part of this multi-click.
1224 let mut selections = self.local_selections(cx);
1225 selections.retain(|selection| selection.id != newest_selection.id);
1226 self.update_selections::<usize>(selections, None, cx)
1227 }
1228
1229 self.pending_selection = Some(PendingSelection { selection, mode });
1230
1231 cx.notify();
1232 }
1233
1234 fn begin_columnar_selection(
1235 &mut self,
1236 position: DisplayPoint,
1237 overshoot: u32,
1238 cx: &mut ViewContext<Self>,
1239 ) {
1240 if !self.focused {
1241 cx.focus_self();
1242 cx.emit(Event::Activate);
1243 }
1244
1245 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1246 let tail = self
1247 .newest_selection::<Point>(&display_map.buffer_snapshot)
1248 .tail();
1249 self.columnar_selection_tail = Some(display_map.buffer_snapshot.anchor_before(tail));
1250
1251 self.select_columns(
1252 tail.to_display_point(&display_map),
1253 position,
1254 overshoot,
1255 &display_map,
1256 cx,
1257 );
1258 }
1259
1260 fn update_selection(
1261 &mut self,
1262 position: DisplayPoint,
1263 overshoot: u32,
1264 scroll_position: Vector2F,
1265 cx: &mut ViewContext<Self>,
1266 ) {
1267 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1268
1269 if let Some(tail) = self.columnar_selection_tail.as_ref() {
1270 let tail = tail.to_display_point(&display_map);
1271 self.select_columns(tail, position, overshoot, &display_map, cx);
1272 } else if let Some(PendingSelection { selection, mode }) = self.pending_selection.as_mut() {
1273 let buffer = self.buffer.read(cx).snapshot(cx);
1274 let head;
1275 let tail;
1276 match mode {
1277 SelectMode::Character => {
1278 head = position.to_point(&display_map);
1279 tail = selection.tail().to_point(&buffer);
1280 }
1281 SelectMode::Word(original_range) => {
1282 let original_display_range = original_range.start.to_display_point(&display_map)
1283 ..original_range.end.to_display_point(&display_map);
1284 let original_buffer_range = original_display_range.start.to_point(&display_map)
1285 ..original_display_range.end.to_point(&display_map);
1286 if movement::is_inside_word(&display_map, position)
1287 || original_display_range.contains(&position)
1288 {
1289 let word_range = movement::surrounding_word(&display_map, position);
1290 if word_range.start < original_display_range.start {
1291 head = word_range.start.to_point(&display_map);
1292 } else {
1293 head = word_range.end.to_point(&display_map);
1294 }
1295 } else {
1296 head = position.to_point(&display_map);
1297 }
1298
1299 if head <= original_buffer_range.start {
1300 tail = original_buffer_range.end;
1301 } else {
1302 tail = original_buffer_range.start;
1303 }
1304 }
1305 SelectMode::Line(original_range) => {
1306 let original_range = original_range.to_point(&display_map.buffer_snapshot);
1307
1308 let position = display_map
1309 .clip_point(position, Bias::Left)
1310 .to_point(&display_map);
1311 let line_start = display_map.prev_line_boundary(position).0;
1312 let next_line_start = buffer.clip_point(
1313 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1314 Bias::Left,
1315 );
1316
1317 if line_start < original_range.start {
1318 head = line_start
1319 } else {
1320 head = next_line_start
1321 }
1322
1323 if head <= original_range.start {
1324 tail = original_range.end;
1325 } else {
1326 tail = original_range.start;
1327 }
1328 }
1329 SelectMode::All => {
1330 return;
1331 }
1332 };
1333
1334 if head < tail {
1335 selection.start = buffer.anchor_before(head);
1336 selection.end = buffer.anchor_before(tail);
1337 selection.reversed = true;
1338 } else {
1339 selection.start = buffer.anchor_before(tail);
1340 selection.end = buffer.anchor_before(head);
1341 selection.reversed = false;
1342 }
1343 } else {
1344 log::error!("update_selection dispatched with no pending selection");
1345 return;
1346 }
1347
1348 self.set_scroll_position(scroll_position, cx);
1349 cx.notify();
1350 }
1351
1352 fn end_selection(&mut self, cx: &mut ViewContext<Self>) {
1353 self.columnar_selection_tail.take();
1354 if self.pending_selection.is_some() {
1355 let selections = self.local_selections::<usize>(cx);
1356 self.update_selections(selections, None, cx);
1357 }
1358 }
1359
1360 fn select_columns(
1361 &mut self,
1362 tail: DisplayPoint,
1363 head: DisplayPoint,
1364 overshoot: u32,
1365 display_map: &DisplaySnapshot,
1366 cx: &mut ViewContext<Self>,
1367 ) {
1368 let start_row = cmp::min(tail.row(), head.row());
1369 let end_row = cmp::max(tail.row(), head.row());
1370 let start_column = cmp::min(tail.column(), head.column() + overshoot);
1371 let end_column = cmp::max(tail.column(), head.column() + overshoot);
1372 let reversed = start_column < tail.column();
1373
1374 let selections = (start_row..=end_row)
1375 .filter_map(|row| {
1376 if start_column <= display_map.line_len(row) && !display_map.is_block_line(row) {
1377 let start = display_map
1378 .clip_point(DisplayPoint::new(row, start_column), Bias::Left)
1379 .to_point(&display_map);
1380 let end = display_map
1381 .clip_point(DisplayPoint::new(row, end_column), Bias::Right)
1382 .to_point(&display_map);
1383 Some(Selection {
1384 id: post_inc(&mut self.next_selection_id),
1385 start,
1386 end,
1387 reversed,
1388 goal: SelectionGoal::None,
1389 })
1390 } else {
1391 None
1392 }
1393 })
1394 .collect::<Vec<_>>();
1395
1396 self.update_selections(selections, None, cx);
1397 cx.notify();
1398 }
1399
1400 pub fn is_selecting(&self) -> bool {
1401 self.pending_selection.is_some() || self.columnar_selection_tail.is_some()
1402 }
1403
1404 pub fn cancel(&mut self, _: &Cancel, cx: &mut ViewContext<Self>) {
1405 if self.hide_context_menu(cx).is_some() {
1406 return;
1407 }
1408
1409 if self.snippet_stack.pop().is_some() {
1410 return;
1411 }
1412
1413 if self.mode != EditorMode::Full {
1414 cx.propagate_action();
1415 return;
1416 }
1417
1418 if self.active_diagnostics.is_some() {
1419 self.dismiss_diagnostics(cx);
1420 } else if let Some(PendingSelection { selection, .. }) = self.pending_selection.take() {
1421 let buffer = self.buffer.read(cx).snapshot(cx);
1422 let selection = Selection {
1423 id: selection.id,
1424 start: selection.start.to_point(&buffer),
1425 end: selection.end.to_point(&buffer),
1426 reversed: selection.reversed,
1427 goal: selection.goal,
1428 };
1429 if self.local_selections::<Point>(cx).is_empty() {
1430 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
1431 }
1432 } else {
1433 let buffer = self.buffer.read(cx).snapshot(cx);
1434 let mut oldest_selection = self.oldest_selection::<usize>(&buffer);
1435 if self.selection_count() == 1 {
1436 if oldest_selection.is_empty() {
1437 cx.propagate_action();
1438 return;
1439 }
1440
1441 oldest_selection.start = oldest_selection.head().clone();
1442 oldest_selection.end = oldest_selection.head().clone();
1443 }
1444 self.update_selections(vec![oldest_selection], Some(Autoscroll::Fit), cx);
1445 }
1446 }
1447
1448 #[cfg(any(test, feature = "test-support"))]
1449 pub fn selected_ranges<D: TextDimension + Ord + Sub<D, Output = D>>(
1450 &self,
1451 cx: &mut MutableAppContext,
1452 ) -> Vec<Range<D>> {
1453 self.local_selections::<D>(cx)
1454 .iter()
1455 .map(|s| {
1456 if s.reversed {
1457 s.end.clone()..s.start.clone()
1458 } else {
1459 s.start.clone()..s.end.clone()
1460 }
1461 })
1462 .collect()
1463 }
1464
1465 #[cfg(any(test, feature = "test-support"))]
1466 pub fn selected_display_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
1467 let display_map = self
1468 .display_map
1469 .update(cx, |display_map, cx| display_map.snapshot(cx));
1470 self.selections
1471 .iter()
1472 .chain(
1473 self.pending_selection
1474 .as_ref()
1475 .map(|pending| &pending.selection),
1476 )
1477 .map(|s| {
1478 if s.reversed {
1479 s.end.to_display_point(&display_map)..s.start.to_display_point(&display_map)
1480 } else {
1481 s.start.to_display_point(&display_map)..s.end.to_display_point(&display_map)
1482 }
1483 })
1484 .collect()
1485 }
1486
1487 pub fn select_ranges<I, T>(
1488 &mut self,
1489 ranges: I,
1490 autoscroll: Option<Autoscroll>,
1491 cx: &mut ViewContext<Self>,
1492 ) where
1493 I: IntoIterator<Item = Range<T>>,
1494 T: ToOffset,
1495 {
1496 let buffer = self.buffer.read(cx).snapshot(cx);
1497 let selections = ranges
1498 .into_iter()
1499 .map(|range| {
1500 let mut start = range.start.to_offset(&buffer);
1501 let mut end = range.end.to_offset(&buffer);
1502 let reversed = if start > end {
1503 mem::swap(&mut start, &mut end);
1504 true
1505 } else {
1506 false
1507 };
1508 Selection {
1509 id: post_inc(&mut self.next_selection_id),
1510 start,
1511 end,
1512 reversed,
1513 goal: SelectionGoal::None,
1514 }
1515 })
1516 .collect::<Vec<_>>();
1517 self.update_selections(selections, autoscroll, cx);
1518 }
1519
1520 #[cfg(any(test, feature = "test-support"))]
1521 pub fn select_display_ranges<'a, T>(&mut self, ranges: T, cx: &mut ViewContext<Self>)
1522 where
1523 T: IntoIterator<Item = &'a Range<DisplayPoint>>,
1524 {
1525 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1526 let selections = ranges
1527 .into_iter()
1528 .map(|range| {
1529 let mut start = range.start;
1530 let mut end = range.end;
1531 let reversed = if start > end {
1532 mem::swap(&mut start, &mut end);
1533 true
1534 } else {
1535 false
1536 };
1537 Selection {
1538 id: post_inc(&mut self.next_selection_id),
1539 start: start.to_point(&display_map),
1540 end: end.to_point(&display_map),
1541 reversed,
1542 goal: SelectionGoal::None,
1543 }
1544 })
1545 .collect();
1546 self.update_selections(selections, None, cx);
1547 }
1548
1549 pub fn handle_input(&mut self, action: &Input, cx: &mut ViewContext<Self>) {
1550 let text = action.0.as_ref();
1551 if !self.skip_autoclose_end(text, cx) {
1552 self.start_transaction(cx);
1553 self.insert(text, cx);
1554 self.autoclose_pairs(cx);
1555 self.end_transaction(cx);
1556 self.trigger_completion_on_input(text, cx);
1557 }
1558 }
1559
1560 pub fn newline(&mut self, _: &Newline, cx: &mut ViewContext<Self>) {
1561 self.start_transaction(cx);
1562 let mut old_selections = SmallVec::<[_; 32]>::new();
1563 {
1564 let selections = self.local_selections::<usize>(cx);
1565 let buffer = self.buffer.read(cx).snapshot(cx);
1566 for selection in selections.iter() {
1567 let start_point = selection.start.to_point(&buffer);
1568 let indent = buffer
1569 .indent_column_for_line(start_point.row)
1570 .min(start_point.column);
1571 let start = selection.start;
1572 let end = selection.end;
1573
1574 let mut insert_extra_newline = false;
1575 if let Some(language) = buffer.language() {
1576 let leading_whitespace_len = buffer
1577 .reversed_chars_at(start)
1578 .take_while(|c| c.is_whitespace() && *c != '\n')
1579 .map(|c| c.len_utf8())
1580 .sum::<usize>();
1581
1582 let trailing_whitespace_len = buffer
1583 .chars_at(end)
1584 .take_while(|c| c.is_whitespace() && *c != '\n')
1585 .map(|c| c.len_utf8())
1586 .sum::<usize>();
1587
1588 insert_extra_newline = language.brackets().iter().any(|pair| {
1589 let pair_start = pair.start.trim_end();
1590 let pair_end = pair.end.trim_start();
1591
1592 pair.newline
1593 && buffer.contains_str_at(end + trailing_whitespace_len, pair_end)
1594 && buffer.contains_str_at(
1595 (start - leading_whitespace_len).saturating_sub(pair_start.len()),
1596 pair_start,
1597 )
1598 });
1599 }
1600
1601 old_selections.push((
1602 selection.id,
1603 buffer.anchor_after(end),
1604 start..end,
1605 indent,
1606 insert_extra_newline,
1607 ));
1608 }
1609 }
1610
1611 self.buffer.update(cx, |buffer, cx| {
1612 let mut delta = 0_isize;
1613 let mut pending_edit: Option<PendingEdit> = None;
1614 for (_, _, range, indent, insert_extra_newline) in &old_selections {
1615 if pending_edit.as_ref().map_or(false, |pending| {
1616 pending.indent != *indent
1617 || pending.insert_extra_newline != *insert_extra_newline
1618 }) {
1619 let pending = pending_edit.take().unwrap();
1620 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1621 new_text.push('\n');
1622 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1623 if pending.insert_extra_newline {
1624 new_text = new_text.repeat(2);
1625 }
1626 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1627 delta += pending.delta;
1628 }
1629
1630 let start = (range.start as isize + delta) as usize;
1631 let end = (range.end as isize + delta) as usize;
1632 let mut text_len = *indent as usize + 1;
1633 if *insert_extra_newline {
1634 text_len *= 2;
1635 }
1636
1637 let pending = pending_edit.get_or_insert_with(Default::default);
1638 pending.delta += text_len as isize - (end - start) as isize;
1639 pending.indent = *indent;
1640 pending.insert_extra_newline = *insert_extra_newline;
1641 pending.ranges.push(start..end);
1642 }
1643
1644 let pending = pending_edit.unwrap();
1645 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1646 new_text.push('\n');
1647 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1648 if pending.insert_extra_newline {
1649 new_text = new_text.repeat(2);
1650 }
1651 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1652
1653 let buffer = buffer.read(cx);
1654 self.selections = self
1655 .selections
1656 .iter()
1657 .cloned()
1658 .zip(old_selections)
1659 .map(
1660 |(mut new_selection, (_, end_anchor, _, _, insert_extra_newline))| {
1661 let mut cursor = end_anchor.to_point(&buffer);
1662 if insert_extra_newline {
1663 cursor.row -= 1;
1664 cursor.column = buffer.line_len(cursor.row);
1665 }
1666 let anchor = buffer.anchor_after(cursor);
1667 new_selection.start = anchor.clone();
1668 new_selection.end = anchor;
1669 new_selection
1670 },
1671 )
1672 .collect();
1673 });
1674
1675 self.request_autoscroll(Autoscroll::Fit, cx);
1676 self.end_transaction(cx);
1677
1678 #[derive(Default)]
1679 struct PendingEdit {
1680 indent: u32,
1681 insert_extra_newline: bool,
1682 delta: isize,
1683 ranges: SmallVec<[Range<usize>; 32]>,
1684 }
1685 }
1686
1687 pub fn insert(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1688 self.start_transaction(cx);
1689
1690 let old_selections = self.local_selections::<usize>(cx);
1691 let selection_anchors = self.buffer.update(cx, |buffer, cx| {
1692 let anchors = {
1693 let snapshot = buffer.read(cx);
1694 old_selections
1695 .iter()
1696 .map(|s| (s.id, s.goal, snapshot.anchor_after(s.end)))
1697 .collect::<Vec<_>>()
1698 };
1699 let edit_ranges = old_selections.iter().map(|s| s.start..s.end);
1700 buffer.edit_with_autoindent(edit_ranges, text, cx);
1701 anchors
1702 });
1703
1704 let selections = {
1705 let snapshot = self.buffer.read(cx).read(cx);
1706 selection_anchors
1707 .into_iter()
1708 .map(|(id, goal, position)| {
1709 let position = position.to_offset(&snapshot);
1710 Selection {
1711 id,
1712 start: position,
1713 end: position,
1714 goal,
1715 reversed: false,
1716 }
1717 })
1718 .collect()
1719 };
1720 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1721 self.end_transaction(cx);
1722 }
1723
1724 fn trigger_completion_on_input(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1725 if let Some(selection) = self.newest_anchor_selection() {
1726 if self
1727 .buffer
1728 .read(cx)
1729 .is_completion_trigger(selection.head(), text, cx)
1730 {
1731 self.show_completions(&ShowCompletions, cx);
1732 } else {
1733 self.hide_context_menu(cx);
1734 }
1735 }
1736 }
1737
1738 fn autoclose_pairs(&mut self, cx: &mut ViewContext<Self>) {
1739 let selections = self.local_selections::<usize>(cx);
1740 let mut bracket_pair_state = None;
1741 let mut new_selections = None;
1742 self.buffer.update(cx, |buffer, cx| {
1743 let mut snapshot = buffer.snapshot(cx);
1744 let left_biased_selections = selections
1745 .iter()
1746 .map(|selection| Selection {
1747 id: selection.id,
1748 start: snapshot.anchor_before(selection.start),
1749 end: snapshot.anchor_before(selection.end),
1750 reversed: selection.reversed,
1751 goal: selection.goal,
1752 })
1753 .collect::<Vec<_>>();
1754
1755 let autoclose_pair = snapshot.language().and_then(|language| {
1756 let first_selection_start = selections.first().unwrap().start;
1757 let pair = language.brackets().iter().find(|pair| {
1758 snapshot.contains_str_at(
1759 first_selection_start.saturating_sub(pair.start.len()),
1760 &pair.start,
1761 )
1762 });
1763 pair.and_then(|pair| {
1764 let should_autoclose = selections[1..].iter().all(|selection| {
1765 snapshot.contains_str_at(
1766 selection.start.saturating_sub(pair.start.len()),
1767 &pair.start,
1768 )
1769 });
1770
1771 if should_autoclose {
1772 Some(pair.clone())
1773 } else {
1774 None
1775 }
1776 })
1777 });
1778
1779 if let Some(pair) = autoclose_pair {
1780 let selection_ranges = selections
1781 .iter()
1782 .map(|selection| {
1783 let start = selection.start.to_offset(&snapshot);
1784 start..start
1785 })
1786 .collect::<SmallVec<[_; 32]>>();
1787
1788 buffer.edit(selection_ranges, &pair.end, cx);
1789 snapshot = buffer.snapshot(cx);
1790
1791 new_selections = Some(
1792 self.resolve_selections::<usize, _>(left_biased_selections.iter(), &snapshot)
1793 .collect::<Vec<_>>(),
1794 );
1795
1796 if pair.end.len() == 1 {
1797 let mut delta = 0;
1798 bracket_pair_state = Some(BracketPairState {
1799 ranges: selections
1800 .iter()
1801 .map(move |selection| {
1802 let offset = selection.start + delta;
1803 delta += 1;
1804 snapshot.anchor_before(offset)..snapshot.anchor_after(offset)
1805 })
1806 .collect(),
1807 pair,
1808 });
1809 }
1810 }
1811 });
1812
1813 if let Some(new_selections) = new_selections {
1814 self.update_selections(new_selections, None, cx);
1815 }
1816 if let Some(bracket_pair_state) = bracket_pair_state {
1817 self.autoclose_stack.push(bracket_pair_state);
1818 }
1819 }
1820
1821 fn skip_autoclose_end(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
1822 let old_selections = self.local_selections::<usize>(cx);
1823 let autoclose_pair = if let Some(autoclose_pair) = self.autoclose_stack.last() {
1824 autoclose_pair
1825 } else {
1826 return false;
1827 };
1828 if text != autoclose_pair.pair.end {
1829 return false;
1830 }
1831
1832 debug_assert_eq!(old_selections.len(), autoclose_pair.ranges.len());
1833
1834 let buffer = self.buffer.read(cx).snapshot(cx);
1835 if old_selections
1836 .iter()
1837 .zip(autoclose_pair.ranges.iter().map(|r| r.to_offset(&buffer)))
1838 .all(|(selection, autoclose_range)| {
1839 let autoclose_range_end = autoclose_range.end.to_offset(&buffer);
1840 selection.is_empty() && selection.start == autoclose_range_end
1841 })
1842 {
1843 let new_selections = old_selections
1844 .into_iter()
1845 .map(|selection| {
1846 let cursor = selection.start + 1;
1847 Selection {
1848 id: selection.id,
1849 start: cursor,
1850 end: cursor,
1851 reversed: false,
1852 goal: SelectionGoal::None,
1853 }
1854 })
1855 .collect();
1856 self.autoclose_stack.pop();
1857 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1858 true
1859 } else {
1860 false
1861 }
1862 }
1863
1864 fn completion_query(buffer: &MultiBufferSnapshot, position: impl ToOffset) -> Option<String> {
1865 let offset = position.to_offset(buffer);
1866 let (word_range, kind) = buffer.surrounding_word(offset);
1867 if offset > word_range.start && kind == Some(CharKind::Word) {
1868 Some(
1869 buffer
1870 .text_for_range(word_range.start..offset)
1871 .collect::<String>(),
1872 )
1873 } else {
1874 None
1875 }
1876 }
1877
1878 fn show_completions(&mut self, _: &ShowCompletions, cx: &mut ViewContext<Self>) {
1879 let project = if let Some(project) = self.project.clone() {
1880 project
1881 } else {
1882 return;
1883 };
1884
1885 let position = if let Some(selection) = self.newest_anchor_selection() {
1886 selection.head()
1887 } else {
1888 return;
1889 };
1890 let (buffer, buffer_position) = self
1891 .buffer
1892 .read(cx)
1893 .text_anchor_for_position(position.clone(), cx);
1894
1895 let query = Self::completion_query(&self.buffer.read(cx).read(cx), position.clone());
1896 let completions = project.update(cx, |project, cx| {
1897 project.completions(&buffer, buffer_position.clone(), cx)
1898 });
1899
1900 let id = post_inc(&mut self.next_completion_id);
1901 let task = cx.spawn_weak(|this, mut cx| {
1902 async move {
1903 let completions = completions.await?;
1904 if completions.is_empty() {
1905 return Ok(());
1906 }
1907
1908 let mut menu = CompletionsMenu {
1909 id,
1910 initial_position: position,
1911 match_candidates: completions
1912 .iter()
1913 .enumerate()
1914 .map(|(id, completion)| {
1915 StringMatchCandidate::new(
1916 id,
1917 completion.label.text[completion.label.filter_range.clone()].into(),
1918 )
1919 })
1920 .collect(),
1921 buffer,
1922 completions: completions.into(),
1923 matches: Vec::new().into(),
1924 selected_item: 0,
1925 list: Default::default(),
1926 };
1927
1928 menu.filter(query.as_deref(), cx.background()).await;
1929
1930 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
1931 this.update(&mut cx, |this, cx| {
1932 match this.context_menu.as_ref() {
1933 None => {}
1934 Some(ContextMenu::Completions(prev_menu)) => {
1935 if prev_menu.id > menu.id {
1936 return;
1937 }
1938 }
1939 _ => return,
1940 }
1941
1942 this.completion_tasks.retain(|(id, _)| *id > menu.id);
1943 if this.focused {
1944 this.show_context_menu(ContextMenu::Completions(menu), cx);
1945 }
1946
1947 cx.notify();
1948 });
1949 }
1950 Ok::<_, anyhow::Error>(())
1951 }
1952 .log_err()
1953 });
1954 self.completion_tasks.push((id, task));
1955 }
1956
1957 pub fn confirm_completion(
1958 &mut self,
1959 ConfirmCompletion(completion_ix): &ConfirmCompletion,
1960 cx: &mut ViewContext<Self>,
1961 ) -> Option<Task<Result<()>>> {
1962 use language::ToOffset as _;
1963
1964 let completions_menu = if let ContextMenu::Completions(menu) = self.hide_context_menu(cx)? {
1965 menu
1966 } else {
1967 return None;
1968 };
1969
1970 let mat = completions_menu
1971 .matches
1972 .get(completion_ix.unwrap_or(completions_menu.selected_item))?;
1973 let buffer_handle = completions_menu.buffer;
1974 let completion = completions_menu.completions.get(mat.candidate_id)?;
1975
1976 let snippet;
1977 let text;
1978 if completion.is_snippet() {
1979 snippet = Some(Snippet::parse(&completion.new_text).log_err()?);
1980 text = snippet.as_ref().unwrap().text.clone();
1981 } else {
1982 snippet = None;
1983 text = completion.new_text.clone();
1984 };
1985 let buffer = buffer_handle.read(cx);
1986 let old_range = completion.old_range.to_offset(&buffer);
1987 let old_text = buffer.text_for_range(old_range.clone()).collect::<String>();
1988
1989 let selections = self.local_selections::<usize>(cx);
1990 let newest_selection = self.newest_anchor_selection()?;
1991 if newest_selection.start.buffer_id != buffer_handle.id() {
1992 return None;
1993 }
1994
1995 let lookbehind = newest_selection
1996 .start
1997 .text_anchor
1998 .to_offset(buffer)
1999 .saturating_sub(old_range.start);
2000 let lookahead = old_range
2001 .end
2002 .saturating_sub(newest_selection.end.text_anchor.to_offset(buffer));
2003 let mut common_prefix_len = old_text
2004 .bytes()
2005 .zip(text.bytes())
2006 .take_while(|(a, b)| a == b)
2007 .count();
2008
2009 let snapshot = self.buffer.read(cx).snapshot(cx);
2010 let mut ranges = Vec::new();
2011 for selection in &selections {
2012 if snapshot.contains_str_at(selection.start.saturating_sub(lookbehind), &old_text) {
2013 let start = selection.start.saturating_sub(lookbehind);
2014 let end = selection.end + lookahead;
2015 ranges.push(start + common_prefix_len..end);
2016 } else {
2017 common_prefix_len = 0;
2018 ranges.clear();
2019 ranges.extend(selections.iter().map(|s| {
2020 if s.id == newest_selection.id {
2021 old_range.clone()
2022 } else {
2023 s.start..s.end
2024 }
2025 }));
2026 break;
2027 }
2028 }
2029 let text = &text[common_prefix_len..];
2030
2031 self.start_transaction(cx);
2032 if let Some(mut snippet) = snippet {
2033 snippet.text = text.to_string();
2034 for tabstop in snippet.tabstops.iter_mut().flatten() {
2035 tabstop.start -= common_prefix_len as isize;
2036 tabstop.end -= common_prefix_len as isize;
2037 }
2038
2039 self.insert_snippet(&ranges, snippet, cx).log_err();
2040 } else {
2041 self.buffer.update(cx, |buffer, cx| {
2042 buffer.edit_with_autoindent(ranges, text, cx);
2043 });
2044 }
2045 self.end_transaction(cx);
2046
2047 let project = self.project.clone()?;
2048 let apply_edits = project.update(cx, |project, cx| {
2049 project.apply_additional_edits_for_completion(
2050 buffer_handle,
2051 completion.clone(),
2052 true,
2053 cx,
2054 )
2055 });
2056 Some(cx.foreground().spawn(async move {
2057 apply_edits.await?;
2058 Ok(())
2059 }))
2060 }
2061
2062 fn show_code_actions(&mut self, _: &ShowCodeActions, cx: &mut ViewContext<Self>) {
2063 let head = if let Some(selection) = self.newest_anchor_selection() {
2064 selection.head()
2065 } else {
2066 return;
2067 };
2068 let project = if let Some(project) = self.project.clone() {
2069 project
2070 } else {
2071 return;
2072 };
2073
2074 let (buffer, head) = self.buffer.read(cx).text_anchor_for_position(head, cx);
2075 let actions = project.update(cx, |project, cx| project.code_actions(&buffer, head, cx));
2076
2077 cx.spawn(|this, mut cx| async move {
2078 let actions = actions.await?;
2079 if !actions.is_empty() {
2080 this.update(&mut cx, |this, cx| {
2081 if this.focused {
2082 this.show_context_menu(
2083 ContextMenu::CodeActions(CodeActionsMenu {
2084 buffer,
2085 actions: actions.into(),
2086 selected_item: 0,
2087 list: UniformListState::default(),
2088 }),
2089 cx,
2090 );
2091 }
2092 });
2093 }
2094 Ok::<_, anyhow::Error>(())
2095 })
2096 .detach_and_log_err(cx);
2097 }
2098
2099 fn confirm_code_action(
2100 workspace: &mut Workspace,
2101 ConfirmCodeAction(action_ix): &ConfirmCodeAction,
2102 cx: &mut ViewContext<Workspace>,
2103 ) -> Option<Task<Result<()>>> {
2104 let editor = workspace.active_item(cx)?.act_as::<Editor>(cx)?;
2105 let actions_menu = if let ContextMenu::CodeActions(menu) =
2106 editor.update(cx, |editor, cx| editor.hide_context_menu(cx))?
2107 {
2108 menu
2109 } else {
2110 return None;
2111 };
2112 let action_ix = action_ix.unwrap_or(actions_menu.selected_item);
2113 let action = actions_menu.actions.get(action_ix)?.clone();
2114 let title = action.lsp_action.title.clone();
2115 let buffer = actions_menu.buffer;
2116 let replica_id = editor.read(cx).replica_id(cx);
2117
2118 let apply_code_actions = workspace.project().clone().update(cx, |project, cx| {
2119 project.apply_code_action(buffer, action, true, cx)
2120 });
2121 Some(cx.spawn(|workspace, mut cx| async move {
2122 let project_transaction = apply_code_actions.await?;
2123
2124 let mut ranges_to_highlight = Vec::new();
2125 let excerpt_buffer = cx.add_model(|cx| {
2126 let mut multibuffer = MultiBuffer::new(replica_id).with_title(title);
2127 for (buffer, transaction) in &project_transaction.0 {
2128 let snapshot = buffer.read(cx).snapshot();
2129 ranges_to_highlight.extend(
2130 multibuffer.push_excerpts_with_context_lines(
2131 buffer.clone(),
2132 snapshot
2133 .edited_ranges_for_transaction::<usize>(transaction)
2134 .collect(),
2135 1,
2136 cx,
2137 ),
2138 );
2139 }
2140 multibuffer
2141 });
2142
2143 workspace.update(&mut cx, |workspace, cx| {
2144 let editor = workspace.open_item(MultiBufferItemHandle(excerpt_buffer), cx);
2145 if let Some(editor) = editor.act_as::<Self>(cx) {
2146 editor.update(cx, |editor, cx| {
2147 let settings = (editor.build_settings)(cx);
2148 editor.highlight_ranges::<Self>(
2149 ranges_to_highlight,
2150 settings.style.highlighted_line_background,
2151 cx,
2152 );
2153 });
2154 }
2155 });
2156
2157 Ok(())
2158 }))
2159 }
2160
2161 pub fn showing_context_menu(&self) -> bool {
2162 self.context_menu
2163 .as_ref()
2164 .map_or(false, |menu| menu.visible())
2165 }
2166
2167 pub fn render_context_menu(&self, cx: &AppContext) -> Option<ElementBox> {
2168 self.context_menu
2169 .as_ref()
2170 .map(|menu| menu.render(self.build_settings.clone(), cx))
2171 }
2172
2173 fn show_context_menu(&mut self, menu: ContextMenu, cx: &mut ViewContext<Self>) {
2174 if !matches!(menu, ContextMenu::Completions(_)) {
2175 self.completion_tasks.clear();
2176 }
2177 self.context_menu = Some(menu);
2178 cx.notify()
2179 }
2180
2181 fn hide_context_menu(&mut self, cx: &mut ViewContext<Self>) -> Option<ContextMenu> {
2182 cx.notify();
2183 self.completion_tasks.clear();
2184 self.context_menu.take()
2185 }
2186
2187 pub fn insert_snippet(
2188 &mut self,
2189 insertion_ranges: &[Range<usize>],
2190 snippet: Snippet,
2191 cx: &mut ViewContext<Self>,
2192 ) -> Result<()> {
2193 let tabstops = self.buffer.update(cx, |buffer, cx| {
2194 buffer.edit_with_autoindent(insertion_ranges.iter().cloned(), &snippet.text, cx);
2195
2196 let snapshot = &*buffer.read(cx);
2197 let snippet = &snippet;
2198 snippet
2199 .tabstops
2200 .iter()
2201 .map(|tabstop| {
2202 let mut tabstop_ranges = tabstop
2203 .iter()
2204 .flat_map(|tabstop_range| {
2205 let mut delta = 0 as isize;
2206 insertion_ranges.iter().map(move |insertion_range| {
2207 let insertion_start = insertion_range.start as isize + delta;
2208 delta +=
2209 snippet.text.len() as isize - insertion_range.len() as isize;
2210
2211 let start = snapshot.anchor_before(
2212 (insertion_start + tabstop_range.start) as usize,
2213 );
2214 let end = snapshot
2215 .anchor_after((insertion_start + tabstop_range.end) as usize);
2216 start..end
2217 })
2218 })
2219 .collect::<Vec<_>>();
2220 tabstop_ranges
2221 .sort_unstable_by(|a, b| a.start.cmp(&b.start, snapshot).unwrap());
2222 tabstop_ranges
2223 })
2224 .collect::<Vec<_>>()
2225 });
2226
2227 if let Some(tabstop) = tabstops.first() {
2228 self.select_ranges(tabstop.iter().cloned(), Some(Autoscroll::Fit), cx);
2229 self.snippet_stack.push(SnippetState {
2230 active_index: 0,
2231 ranges: tabstops,
2232 });
2233 }
2234
2235 Ok(())
2236 }
2237
2238 pub fn move_to_next_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) -> bool {
2239 self.move_to_snippet_tabstop(Bias::Right, cx)
2240 }
2241
2242 pub fn move_to_prev_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) {
2243 self.move_to_snippet_tabstop(Bias::Left, cx);
2244 }
2245
2246 pub fn move_to_snippet_tabstop(&mut self, bias: Bias, cx: &mut ViewContext<Self>) -> bool {
2247 let buffer = self.buffer.read(cx).snapshot(cx);
2248
2249 if let Some(snippet) = self.snippet_stack.last_mut() {
2250 match bias {
2251 Bias::Left => {
2252 if snippet.active_index > 0 {
2253 snippet.active_index -= 1;
2254 } else {
2255 return false;
2256 }
2257 }
2258 Bias::Right => {
2259 if snippet.active_index + 1 < snippet.ranges.len() {
2260 snippet.active_index += 1;
2261 } else {
2262 return false;
2263 }
2264 }
2265 }
2266 if let Some(current_ranges) = snippet.ranges.get(snippet.active_index) {
2267 let new_selections = current_ranges
2268 .iter()
2269 .map(|new_range| {
2270 let new_range = new_range.to_offset(&buffer);
2271 Selection {
2272 id: post_inc(&mut self.next_selection_id),
2273 start: new_range.start,
2274 end: new_range.end,
2275 reversed: false,
2276 goal: SelectionGoal::None,
2277 }
2278 })
2279 .collect();
2280
2281 // Remove the snippet state when moving to the last tabstop.
2282 if snippet.active_index + 1 == snippet.ranges.len() {
2283 self.snippet_stack.pop();
2284 }
2285
2286 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2287 return true;
2288 }
2289 self.snippet_stack.pop();
2290 }
2291
2292 false
2293 }
2294
2295 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
2296 self.start_transaction(cx);
2297 self.select_all(&SelectAll, cx);
2298 self.insert("", cx);
2299 self.end_transaction(cx);
2300 }
2301
2302 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
2303 self.start_transaction(cx);
2304 let mut selections = self.local_selections::<Point>(cx);
2305 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2306 for selection in &mut selections {
2307 if selection.is_empty() {
2308 let head = selection.head().to_display_point(&display_map);
2309 let cursor = movement::left(&display_map, head)
2310 .unwrap()
2311 .to_point(&display_map);
2312 selection.set_head(cursor);
2313 selection.goal = SelectionGoal::None;
2314 }
2315 }
2316 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2317 self.insert("", cx);
2318 self.end_transaction(cx);
2319 }
2320
2321 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
2322 self.start_transaction(cx);
2323 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2324 let mut selections = self.local_selections::<Point>(cx);
2325 for selection in &mut selections {
2326 if selection.is_empty() {
2327 let head = selection.head().to_display_point(&display_map);
2328 let cursor = movement::right(&display_map, head)
2329 .unwrap()
2330 .to_point(&display_map);
2331 selection.set_head(cursor);
2332 selection.goal = SelectionGoal::None;
2333 }
2334 }
2335 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2336 self.insert(&"", cx);
2337 self.end_transaction(cx);
2338 }
2339
2340 pub fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
2341 if self.move_to_next_snippet_tabstop(cx) {
2342 return;
2343 }
2344
2345 self.start_transaction(cx);
2346 let tab_size = (self.build_settings)(cx).tab_size;
2347 let mut selections = self.local_selections::<Point>(cx);
2348 let mut last_indent = None;
2349 self.buffer.update(cx, |buffer, cx| {
2350 for selection in &mut selections {
2351 if selection.is_empty() {
2352 let char_column = buffer
2353 .read(cx)
2354 .text_for_range(Point::new(selection.start.row, 0)..selection.start)
2355 .flat_map(str::chars)
2356 .count();
2357 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
2358 buffer.edit(
2359 [selection.start..selection.start],
2360 " ".repeat(chars_to_next_tab_stop),
2361 cx,
2362 );
2363 selection.start.column += chars_to_next_tab_stop as u32;
2364 selection.end = selection.start;
2365 } else {
2366 let mut start_row = selection.start.row;
2367 let mut end_row = selection.end.row + 1;
2368
2369 // If a selection ends at the beginning of a line, don't indent
2370 // that last line.
2371 if selection.end.column == 0 {
2372 end_row -= 1;
2373 }
2374
2375 // Avoid re-indenting a row that has already been indented by a
2376 // previous selection, but still update this selection's column
2377 // to reflect that indentation.
2378 if let Some((last_indent_row, last_indent_len)) = last_indent {
2379 if last_indent_row == selection.start.row {
2380 selection.start.column += last_indent_len;
2381 start_row += 1;
2382 }
2383 if last_indent_row == selection.end.row {
2384 selection.end.column += last_indent_len;
2385 }
2386 }
2387
2388 for row in start_row..end_row {
2389 let indent_column = buffer.read(cx).indent_column_for_line(row) as usize;
2390 let columns_to_next_tab_stop = tab_size - (indent_column % tab_size);
2391 let row_start = Point::new(row, 0);
2392 buffer.edit(
2393 [row_start..row_start],
2394 " ".repeat(columns_to_next_tab_stop),
2395 cx,
2396 );
2397
2398 // Update this selection's endpoints to reflect the indentation.
2399 if row == selection.start.row {
2400 selection.start.column += columns_to_next_tab_stop as u32;
2401 }
2402 if row == selection.end.row {
2403 selection.end.column += columns_to_next_tab_stop as u32;
2404 }
2405
2406 last_indent = Some((row, columns_to_next_tab_stop as u32));
2407 }
2408 }
2409 }
2410 });
2411
2412 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2413 self.end_transaction(cx);
2414 }
2415
2416 pub fn outdent(&mut self, _: &Outdent, cx: &mut ViewContext<Self>) {
2417 if !self.snippet_stack.is_empty() {
2418 self.move_to_prev_snippet_tabstop(cx);
2419 return;
2420 }
2421
2422 self.start_transaction(cx);
2423 let tab_size = (self.build_settings)(cx).tab_size;
2424 let selections = self.local_selections::<Point>(cx);
2425 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2426 let mut deletion_ranges = Vec::new();
2427 let mut last_outdent = None;
2428 {
2429 let buffer = self.buffer.read(cx).read(cx);
2430 for selection in &selections {
2431 let mut rows = selection.spanned_rows(false, &display_map);
2432
2433 // Avoid re-outdenting a row that has already been outdented by a
2434 // previous selection.
2435 if let Some(last_row) = last_outdent {
2436 if last_row == rows.start {
2437 rows.start += 1;
2438 }
2439 }
2440
2441 for row in rows {
2442 let column = buffer.indent_column_for_line(row) as usize;
2443 if column > 0 {
2444 let mut deletion_len = (column % tab_size) as u32;
2445 if deletion_len == 0 {
2446 deletion_len = tab_size as u32;
2447 }
2448 deletion_ranges.push(Point::new(row, 0)..Point::new(row, deletion_len));
2449 last_outdent = Some(row);
2450 }
2451 }
2452 }
2453 }
2454 self.buffer.update(cx, |buffer, cx| {
2455 buffer.edit(deletion_ranges, "", cx);
2456 });
2457
2458 self.update_selections(
2459 self.local_selections::<usize>(cx),
2460 Some(Autoscroll::Fit),
2461 cx,
2462 );
2463 self.end_transaction(cx);
2464 }
2465
2466 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
2467 self.start_transaction(cx);
2468
2469 let selections = self.local_selections::<Point>(cx);
2470 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2471 let buffer = self.buffer.read(cx).snapshot(cx);
2472
2473 let mut new_cursors = Vec::new();
2474 let mut edit_ranges = Vec::new();
2475 let mut selections = selections.iter().peekable();
2476 while let Some(selection) = selections.next() {
2477 let mut rows = selection.spanned_rows(false, &display_map);
2478 let goal_display_column = selection.head().to_display_point(&display_map).column();
2479
2480 // Accumulate contiguous regions of rows that we want to delete.
2481 while let Some(next_selection) = selections.peek() {
2482 let next_rows = next_selection.spanned_rows(false, &display_map);
2483 if next_rows.start <= rows.end {
2484 rows.end = next_rows.end;
2485 selections.next().unwrap();
2486 } else {
2487 break;
2488 }
2489 }
2490
2491 let mut edit_start = Point::new(rows.start, 0).to_offset(&buffer);
2492 let edit_end;
2493 let cursor_buffer_row;
2494 if buffer.max_point().row >= rows.end {
2495 // If there's a line after the range, delete the \n from the end of the row range
2496 // and position the cursor on the next line.
2497 edit_end = Point::new(rows.end, 0).to_offset(&buffer);
2498 cursor_buffer_row = rows.end;
2499 } else {
2500 // If there isn't a line after the range, delete the \n from the line before the
2501 // start of the row range and position the cursor there.
2502 edit_start = edit_start.saturating_sub(1);
2503 edit_end = buffer.len();
2504 cursor_buffer_row = rows.start.saturating_sub(1);
2505 }
2506
2507 let mut cursor = Point::new(cursor_buffer_row, 0).to_display_point(&display_map);
2508 *cursor.column_mut() =
2509 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
2510
2511 new_cursors.push((
2512 selection.id,
2513 buffer.anchor_after(cursor.to_point(&display_map)),
2514 ));
2515 edit_ranges.push(edit_start..edit_end);
2516 }
2517
2518 let buffer = self.buffer.update(cx, |buffer, cx| {
2519 buffer.edit(edit_ranges, "", cx);
2520 buffer.snapshot(cx)
2521 });
2522 let new_selections = new_cursors
2523 .into_iter()
2524 .map(|(id, cursor)| {
2525 let cursor = cursor.to_point(&buffer);
2526 Selection {
2527 id,
2528 start: cursor,
2529 end: cursor,
2530 reversed: false,
2531 goal: SelectionGoal::None,
2532 }
2533 })
2534 .collect();
2535 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2536 self.end_transaction(cx);
2537 }
2538
2539 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
2540 self.start_transaction(cx);
2541
2542 let selections = self.local_selections::<Point>(cx);
2543 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2544 let buffer = &display_map.buffer_snapshot;
2545
2546 let mut edits = Vec::new();
2547 let mut selections_iter = selections.iter().peekable();
2548 while let Some(selection) = selections_iter.next() {
2549 // Avoid duplicating the same lines twice.
2550 let mut rows = selection.spanned_rows(false, &display_map);
2551
2552 while let Some(next_selection) = selections_iter.peek() {
2553 let next_rows = next_selection.spanned_rows(false, &display_map);
2554 if next_rows.start <= rows.end - 1 {
2555 rows.end = next_rows.end;
2556 selections_iter.next().unwrap();
2557 } else {
2558 break;
2559 }
2560 }
2561
2562 // Copy the text from the selected row region and splice it at the start of the region.
2563 let start = Point::new(rows.start, 0);
2564 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
2565 let text = buffer
2566 .text_for_range(start..end)
2567 .chain(Some("\n"))
2568 .collect::<String>();
2569 edits.push((start, text, rows.len() as u32));
2570 }
2571
2572 self.buffer.update(cx, |buffer, cx| {
2573 for (point, text, _) in edits.into_iter().rev() {
2574 buffer.edit(Some(point..point), text, cx);
2575 }
2576 });
2577
2578 self.request_autoscroll(Autoscroll::Fit, cx);
2579 self.end_transaction(cx);
2580 }
2581
2582 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
2583 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2584 let buffer = self.buffer.read(cx).snapshot(cx);
2585
2586 let mut edits = Vec::new();
2587 let mut unfold_ranges = Vec::new();
2588 let mut refold_ranges = Vec::new();
2589
2590 let selections = self.local_selections::<Point>(cx);
2591 let mut selections = selections.iter().peekable();
2592 let mut contiguous_row_selections = Vec::new();
2593 let mut new_selections = Vec::new();
2594
2595 while let Some(selection) = selections.next() {
2596 // Find all the selections that span a contiguous row range
2597 contiguous_row_selections.push(selection.clone());
2598 let start_row = selection.start.row;
2599 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
2600 display_map.next_line_boundary(selection.end).0.row + 1
2601 } else {
2602 selection.end.row
2603 };
2604
2605 while let Some(next_selection) = selections.peek() {
2606 if next_selection.start.row <= end_row {
2607 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
2608 display_map.next_line_boundary(next_selection.end).0.row + 1
2609 } else {
2610 next_selection.end.row
2611 };
2612 contiguous_row_selections.push(selections.next().unwrap().clone());
2613 } else {
2614 break;
2615 }
2616 }
2617
2618 // Move the text spanned by the row range to be before the line preceding the row range
2619 if start_row > 0 {
2620 let range_to_move = Point::new(start_row - 1, buffer.line_len(start_row - 1))
2621 ..Point::new(end_row - 1, buffer.line_len(end_row - 1));
2622 let insertion_point = display_map
2623 .prev_line_boundary(Point::new(start_row - 1, 0))
2624 .0;
2625
2626 // Don't move lines across excerpts
2627 if buffer
2628 .excerpt_boundaries_in_range((
2629 Bound::Excluded(insertion_point),
2630 Bound::Included(range_to_move.end),
2631 ))
2632 .next()
2633 .is_none()
2634 {
2635 let text = buffer
2636 .text_for_range(range_to_move.clone())
2637 .flat_map(|s| s.chars())
2638 .skip(1)
2639 .chain(['\n'])
2640 .collect::<String>();
2641
2642 edits.push((
2643 buffer.anchor_after(range_to_move.start)
2644 ..buffer.anchor_before(range_to_move.end),
2645 String::new(),
2646 ));
2647 let insertion_anchor = buffer.anchor_after(insertion_point);
2648 edits.push((insertion_anchor.clone()..insertion_anchor, text));
2649
2650 let row_delta = range_to_move.start.row - insertion_point.row + 1;
2651
2652 // Move selections up
2653 new_selections.extend(contiguous_row_selections.drain(..).map(
2654 |mut selection| {
2655 selection.start.row -= row_delta;
2656 selection.end.row -= row_delta;
2657 selection
2658 },
2659 ));
2660
2661 // Move folds up
2662 unfold_ranges.push(range_to_move.clone());
2663 for fold in display_map.folds_in_range(
2664 buffer.anchor_before(range_to_move.start)
2665 ..buffer.anchor_after(range_to_move.end),
2666 ) {
2667 let mut start = fold.start.to_point(&buffer);
2668 let mut end = fold.end.to_point(&buffer);
2669 start.row -= row_delta;
2670 end.row -= row_delta;
2671 refold_ranges.push(start..end);
2672 }
2673 }
2674 }
2675
2676 // If we didn't move line(s), preserve the existing selections
2677 new_selections.extend(contiguous_row_selections.drain(..));
2678 }
2679
2680 self.start_transaction(cx);
2681 self.unfold_ranges(unfold_ranges, cx);
2682 self.buffer.update(cx, |buffer, cx| {
2683 for (range, text) in edits {
2684 buffer.edit([range], text, cx);
2685 }
2686 });
2687 self.fold_ranges(refold_ranges, cx);
2688 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2689 self.end_transaction(cx);
2690 }
2691
2692 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
2693 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2694 let buffer = self.buffer.read(cx).snapshot(cx);
2695
2696 let mut edits = Vec::new();
2697 let mut unfold_ranges = Vec::new();
2698 let mut refold_ranges = Vec::new();
2699
2700 let selections = self.local_selections::<Point>(cx);
2701 let mut selections = selections.iter().peekable();
2702 let mut contiguous_row_selections = Vec::new();
2703 let mut new_selections = Vec::new();
2704
2705 while let Some(selection) = selections.next() {
2706 // Find all the selections that span a contiguous row range
2707 contiguous_row_selections.push(selection.clone());
2708 let start_row = selection.start.row;
2709 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
2710 display_map.next_line_boundary(selection.end).0.row + 1
2711 } else {
2712 selection.end.row
2713 };
2714
2715 while let Some(next_selection) = selections.peek() {
2716 if next_selection.start.row <= end_row {
2717 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
2718 display_map.next_line_boundary(next_selection.end).0.row + 1
2719 } else {
2720 next_selection.end.row
2721 };
2722 contiguous_row_selections.push(selections.next().unwrap().clone());
2723 } else {
2724 break;
2725 }
2726 }
2727
2728 // Move the text spanned by the row range to be after the last line of the row range
2729 if end_row <= buffer.max_point().row {
2730 let range_to_move = Point::new(start_row, 0)..Point::new(end_row, 0);
2731 let insertion_point = display_map.next_line_boundary(Point::new(end_row, 0)).0;
2732
2733 // Don't move lines across excerpt boundaries
2734 if buffer
2735 .excerpt_boundaries_in_range((
2736 Bound::Excluded(range_to_move.start),
2737 Bound::Included(insertion_point),
2738 ))
2739 .next()
2740 .is_none()
2741 {
2742 let mut text = String::from("\n");
2743 text.extend(buffer.text_for_range(range_to_move.clone()));
2744 text.pop(); // Drop trailing newline
2745 edits.push((
2746 buffer.anchor_after(range_to_move.start)
2747 ..buffer.anchor_before(range_to_move.end),
2748 String::new(),
2749 ));
2750 let insertion_anchor = buffer.anchor_after(insertion_point);
2751 edits.push((insertion_anchor.clone()..insertion_anchor, text));
2752
2753 let row_delta = insertion_point.row - range_to_move.end.row + 1;
2754
2755 // Move selections down
2756 new_selections.extend(contiguous_row_selections.drain(..).map(
2757 |mut selection| {
2758 selection.start.row += row_delta;
2759 selection.end.row += row_delta;
2760 selection
2761 },
2762 ));
2763
2764 // Move folds down
2765 unfold_ranges.push(range_to_move.clone());
2766 for fold in display_map.folds_in_range(
2767 buffer.anchor_before(range_to_move.start)
2768 ..buffer.anchor_after(range_to_move.end),
2769 ) {
2770 let mut start = fold.start.to_point(&buffer);
2771 let mut end = fold.end.to_point(&buffer);
2772 start.row += row_delta;
2773 end.row += row_delta;
2774 refold_ranges.push(start..end);
2775 }
2776 }
2777 }
2778
2779 // If we didn't move line(s), preserve the existing selections
2780 new_selections.extend(contiguous_row_selections.drain(..));
2781 }
2782
2783 self.start_transaction(cx);
2784 self.unfold_ranges(unfold_ranges, cx);
2785 self.buffer.update(cx, |buffer, cx| {
2786 for (range, text) in edits {
2787 buffer.edit([range], text, cx);
2788 }
2789 });
2790 self.fold_ranges(refold_ranges, cx);
2791 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2792 self.end_transaction(cx);
2793 }
2794
2795 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
2796 self.start_transaction(cx);
2797 let mut text = String::new();
2798 let mut selections = self.local_selections::<Point>(cx);
2799 let mut clipboard_selections = Vec::with_capacity(selections.len());
2800 {
2801 let buffer = self.buffer.read(cx).read(cx);
2802 let max_point = buffer.max_point();
2803 for selection in &mut selections {
2804 let is_entire_line = selection.is_empty();
2805 if is_entire_line {
2806 selection.start = Point::new(selection.start.row, 0);
2807 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
2808 selection.goal = SelectionGoal::None;
2809 }
2810 let mut len = 0;
2811 for chunk in buffer.text_for_range(selection.start..selection.end) {
2812 text.push_str(chunk);
2813 len += chunk.len();
2814 }
2815 clipboard_selections.push(ClipboardSelection {
2816 len,
2817 is_entire_line,
2818 });
2819 }
2820 }
2821 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2822 self.insert("", cx);
2823 self.end_transaction(cx);
2824
2825 cx.as_mut()
2826 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
2827 }
2828
2829 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
2830 let selections = self.local_selections::<Point>(cx);
2831 let mut text = String::new();
2832 let mut clipboard_selections = Vec::with_capacity(selections.len());
2833 {
2834 let buffer = self.buffer.read(cx).read(cx);
2835 let max_point = buffer.max_point();
2836 for selection in selections.iter() {
2837 let mut start = selection.start;
2838 let mut end = selection.end;
2839 let is_entire_line = selection.is_empty();
2840 if is_entire_line {
2841 start = Point::new(start.row, 0);
2842 end = cmp::min(max_point, Point::new(start.row + 1, 0));
2843 }
2844 let mut len = 0;
2845 for chunk in buffer.text_for_range(start..end) {
2846 text.push_str(chunk);
2847 len += chunk.len();
2848 }
2849 clipboard_selections.push(ClipboardSelection {
2850 len,
2851 is_entire_line,
2852 });
2853 }
2854 }
2855
2856 cx.as_mut()
2857 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
2858 }
2859
2860 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
2861 if let Some(item) = cx.as_mut().read_from_clipboard() {
2862 let clipboard_text = item.text();
2863 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
2864 let mut selections = self.local_selections::<usize>(cx);
2865 let all_selections_were_entire_line =
2866 clipboard_selections.iter().all(|s| s.is_entire_line);
2867 if clipboard_selections.len() != selections.len() {
2868 clipboard_selections.clear();
2869 }
2870
2871 let mut delta = 0_isize;
2872 let mut start_offset = 0;
2873 for (i, selection) in selections.iter_mut().enumerate() {
2874 let to_insert;
2875 let entire_line;
2876 if let Some(clipboard_selection) = clipboard_selections.get(i) {
2877 let end_offset = start_offset + clipboard_selection.len;
2878 to_insert = &clipboard_text[start_offset..end_offset];
2879 entire_line = clipboard_selection.is_entire_line;
2880 start_offset = end_offset
2881 } else {
2882 to_insert = clipboard_text.as_str();
2883 entire_line = all_selections_were_entire_line;
2884 }
2885
2886 selection.start = (selection.start as isize + delta) as usize;
2887 selection.end = (selection.end as isize + delta) as usize;
2888
2889 self.buffer.update(cx, |buffer, cx| {
2890 // If the corresponding selection was empty when this slice of the
2891 // clipboard text was written, then the entire line containing the
2892 // selection was copied. If this selection is also currently empty,
2893 // then paste the line before the current line of the buffer.
2894 let range = if selection.is_empty() && entire_line {
2895 let column = selection.start.to_point(&buffer.read(cx)).column as usize;
2896 let line_start = selection.start - column;
2897 line_start..line_start
2898 } else {
2899 selection.start..selection.end
2900 };
2901
2902 delta += to_insert.len() as isize - range.len() as isize;
2903 buffer.edit([range], to_insert, cx);
2904 selection.start += to_insert.len();
2905 selection.end = selection.start;
2906 });
2907 }
2908 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2909 } else {
2910 self.insert(clipboard_text, cx);
2911 }
2912 }
2913 }
2914
2915 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
2916 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
2917 if let Some((selections, _)) = self.selection_history.get(&tx_id).cloned() {
2918 self.set_selections(selections, cx);
2919 }
2920 self.request_autoscroll(Autoscroll::Fit, cx);
2921 }
2922 }
2923
2924 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
2925 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
2926 if let Some((_, Some(selections))) = self.selection_history.get(&tx_id).cloned() {
2927 self.set_selections(selections, cx);
2928 }
2929 self.request_autoscroll(Autoscroll::Fit, cx);
2930 }
2931 }
2932
2933 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
2934 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2935 let mut selections = self.local_selections::<Point>(cx);
2936 for selection in &mut selections {
2937 let start = selection.start.to_display_point(&display_map);
2938 let end = selection.end.to_display_point(&display_map);
2939
2940 if start != end {
2941 selection.end = selection.start.clone();
2942 } else {
2943 let cursor = movement::left(&display_map, start)
2944 .unwrap()
2945 .to_point(&display_map);
2946 selection.start = cursor.clone();
2947 selection.end = cursor;
2948 }
2949 selection.reversed = false;
2950 selection.goal = SelectionGoal::None;
2951 }
2952 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2953 }
2954
2955 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
2956 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2957 let mut selections = self.local_selections::<Point>(cx);
2958 for selection in &mut selections {
2959 let head = selection.head().to_display_point(&display_map);
2960 let cursor = movement::left(&display_map, head)
2961 .unwrap()
2962 .to_point(&display_map);
2963 selection.set_head(cursor);
2964 selection.goal = SelectionGoal::None;
2965 }
2966 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2967 }
2968
2969 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
2970 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2971 let mut selections = self.local_selections::<Point>(cx);
2972 for selection in &mut selections {
2973 let start = selection.start.to_display_point(&display_map);
2974 let end = selection.end.to_display_point(&display_map);
2975
2976 if start != end {
2977 selection.start = selection.end.clone();
2978 } else {
2979 let cursor = movement::right(&display_map, end)
2980 .unwrap()
2981 .to_point(&display_map);
2982 selection.start = cursor;
2983 selection.end = cursor;
2984 }
2985 selection.reversed = false;
2986 selection.goal = SelectionGoal::None;
2987 }
2988 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2989 }
2990
2991 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
2992 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2993 let mut selections = self.local_selections::<Point>(cx);
2994 for selection in &mut selections {
2995 let head = selection.head().to_display_point(&display_map);
2996 let cursor = movement::right(&display_map, head)
2997 .unwrap()
2998 .to_point(&display_map);
2999 selection.set_head(cursor);
3000 selection.goal = SelectionGoal::None;
3001 }
3002 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3003 }
3004
3005 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
3006 if let Some(context_menu) = self.context_menu.as_mut() {
3007 if context_menu.select_prev(cx) {
3008 return;
3009 }
3010 }
3011
3012 if matches!(self.mode, EditorMode::SingleLine) {
3013 cx.propagate_action();
3014 return;
3015 }
3016
3017 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3018 let mut selections = self.local_selections::<Point>(cx);
3019 for selection in &mut selections {
3020 let start = selection.start.to_display_point(&display_map);
3021 let end = selection.end.to_display_point(&display_map);
3022 if start != end {
3023 selection.goal = SelectionGoal::None;
3024 }
3025
3026 let (start, goal) = movement::up(&display_map, start, selection.goal).unwrap();
3027 let cursor = start.to_point(&display_map);
3028 selection.start = cursor;
3029 selection.end = cursor;
3030 selection.goal = goal;
3031 selection.reversed = false;
3032 }
3033 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3034 }
3035
3036 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
3037 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3038 let mut selections = self.local_selections::<Point>(cx);
3039 for selection in &mut selections {
3040 let head = selection.head().to_display_point(&display_map);
3041 let (head, goal) = movement::up(&display_map, head, selection.goal).unwrap();
3042 let cursor = head.to_point(&display_map);
3043 selection.set_head(cursor);
3044 selection.goal = goal;
3045 }
3046 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3047 }
3048
3049 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
3050 if let Some(context_menu) = self.context_menu.as_mut() {
3051 if context_menu.select_next(cx) {
3052 return;
3053 }
3054 }
3055
3056 if matches!(self.mode, EditorMode::SingleLine) {
3057 cx.propagate_action();
3058 return;
3059 }
3060
3061 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3062 let mut selections = self.local_selections::<Point>(cx);
3063 for selection in &mut selections {
3064 let start = selection.start.to_display_point(&display_map);
3065 let end = selection.end.to_display_point(&display_map);
3066 if start != end {
3067 selection.goal = SelectionGoal::None;
3068 }
3069
3070 let (start, goal) = movement::down(&display_map, end, selection.goal).unwrap();
3071 let cursor = start.to_point(&display_map);
3072 selection.start = cursor;
3073 selection.end = cursor;
3074 selection.goal = goal;
3075 selection.reversed = false;
3076 }
3077 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3078 }
3079
3080 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
3081 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3082 let mut selections = self.local_selections::<Point>(cx);
3083 for selection in &mut selections {
3084 let head = selection.head().to_display_point(&display_map);
3085 let (head, goal) = movement::down(&display_map, head, selection.goal).unwrap();
3086 let cursor = head.to_point(&display_map);
3087 selection.set_head(cursor);
3088 selection.goal = goal;
3089 }
3090 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3091 }
3092
3093 pub fn move_to_previous_word_boundary(
3094 &mut self,
3095 _: &MoveToPreviousWordBoundary,
3096 cx: &mut ViewContext<Self>,
3097 ) {
3098 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3099 let mut selections = self.local_selections::<Point>(cx);
3100 for selection in &mut selections {
3101 let head = selection.head().to_display_point(&display_map);
3102 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3103 selection.start = cursor.clone();
3104 selection.end = cursor;
3105 selection.reversed = false;
3106 selection.goal = SelectionGoal::None;
3107 }
3108 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3109 }
3110
3111 pub fn select_to_previous_word_boundary(
3112 &mut self,
3113 _: &SelectToPreviousWordBoundary,
3114 cx: &mut ViewContext<Self>,
3115 ) {
3116 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3117 let mut selections = self.local_selections::<Point>(cx);
3118 for selection in &mut selections {
3119 let head = selection.head().to_display_point(&display_map);
3120 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3121 selection.set_head(cursor);
3122 selection.goal = SelectionGoal::None;
3123 }
3124 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3125 }
3126
3127 pub fn delete_to_previous_word_boundary(
3128 &mut self,
3129 _: &DeleteToPreviousWordBoundary,
3130 cx: &mut ViewContext<Self>,
3131 ) {
3132 self.start_transaction(cx);
3133 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3134 let mut selections = self.local_selections::<Point>(cx);
3135 for selection in &mut selections {
3136 if selection.is_empty() {
3137 let head = selection.head().to_display_point(&display_map);
3138 let cursor =
3139 movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3140 selection.set_head(cursor);
3141 selection.goal = SelectionGoal::None;
3142 }
3143 }
3144 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3145 self.insert("", cx);
3146 self.end_transaction(cx);
3147 }
3148
3149 pub fn move_to_next_word_boundary(
3150 &mut self,
3151 _: &MoveToNextWordBoundary,
3152 cx: &mut ViewContext<Self>,
3153 ) {
3154 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3155 let mut selections = self.local_selections::<Point>(cx);
3156 for selection in &mut selections {
3157 let head = selection.head().to_display_point(&display_map);
3158 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
3159 selection.start = cursor;
3160 selection.end = cursor;
3161 selection.reversed = false;
3162 selection.goal = SelectionGoal::None;
3163 }
3164 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3165 }
3166
3167 pub fn select_to_next_word_boundary(
3168 &mut self,
3169 _: &SelectToNextWordBoundary,
3170 cx: &mut ViewContext<Self>,
3171 ) {
3172 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3173 let mut selections = self.local_selections::<Point>(cx);
3174 for selection in &mut selections {
3175 let head = selection.head().to_display_point(&display_map);
3176 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
3177 selection.set_head(cursor);
3178 selection.goal = SelectionGoal::None;
3179 }
3180 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3181 }
3182
3183 pub fn delete_to_next_word_boundary(
3184 &mut self,
3185 _: &DeleteToNextWordBoundary,
3186 cx: &mut ViewContext<Self>,
3187 ) {
3188 self.start_transaction(cx);
3189 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3190 let mut selections = self.local_selections::<Point>(cx);
3191 for selection in &mut selections {
3192 if selection.is_empty() {
3193 let head = selection.head().to_display_point(&display_map);
3194 let cursor =
3195 movement::next_word_boundary(&display_map, head).to_point(&display_map);
3196 selection.set_head(cursor);
3197 selection.goal = SelectionGoal::None;
3198 }
3199 }
3200 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3201 self.insert("", cx);
3202 self.end_transaction(cx);
3203 }
3204
3205 pub fn move_to_beginning_of_line(
3206 &mut self,
3207 _: &MoveToBeginningOfLine,
3208 cx: &mut ViewContext<Self>,
3209 ) {
3210 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3211 let mut selections = self.local_selections::<Point>(cx);
3212 for selection in &mut selections {
3213 let head = selection.head().to_display_point(&display_map);
3214 let new_head = movement::line_beginning(&display_map, head, true);
3215 let cursor = new_head.to_point(&display_map);
3216 selection.start = cursor;
3217 selection.end = cursor;
3218 selection.reversed = false;
3219 selection.goal = SelectionGoal::None;
3220 }
3221 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3222 }
3223
3224 pub fn select_to_beginning_of_line(
3225 &mut self,
3226 SelectToBeginningOfLine(stop_at_soft_boundaries): &SelectToBeginningOfLine,
3227 cx: &mut ViewContext<Self>,
3228 ) {
3229 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3230 let mut selections = self.local_selections::<Point>(cx);
3231 for selection in &mut selections {
3232 let head = selection.head().to_display_point(&display_map);
3233 let new_head = movement::line_beginning(&display_map, head, *stop_at_soft_boundaries);
3234 selection.set_head(new_head.to_point(&display_map));
3235 selection.goal = SelectionGoal::None;
3236 }
3237 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3238 }
3239
3240 pub fn delete_to_beginning_of_line(
3241 &mut self,
3242 _: &DeleteToBeginningOfLine,
3243 cx: &mut ViewContext<Self>,
3244 ) {
3245 self.start_transaction(cx);
3246 self.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
3247 self.backspace(&Backspace, cx);
3248 self.end_transaction(cx);
3249 }
3250
3251 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
3252 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3253 let mut selections = self.local_selections::<Point>(cx);
3254 {
3255 for selection in &mut selections {
3256 let head = selection.head().to_display_point(&display_map);
3257 let new_head = movement::line_end(&display_map, head, true);
3258 let anchor = new_head.to_point(&display_map);
3259 selection.start = anchor.clone();
3260 selection.end = anchor;
3261 selection.reversed = false;
3262 selection.goal = SelectionGoal::None;
3263 }
3264 }
3265 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3266 }
3267
3268 pub fn select_to_end_of_line(
3269 &mut self,
3270 SelectToEndOfLine(stop_at_soft_boundaries): &SelectToEndOfLine,
3271 cx: &mut ViewContext<Self>,
3272 ) {
3273 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3274 let mut selections = self.local_selections::<Point>(cx);
3275 for selection in &mut selections {
3276 let head = selection.head().to_display_point(&display_map);
3277 let new_head = movement::line_end(&display_map, head, *stop_at_soft_boundaries);
3278 selection.set_head(new_head.to_point(&display_map));
3279 selection.goal = SelectionGoal::None;
3280 }
3281 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3282 }
3283
3284 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
3285 self.start_transaction(cx);
3286 self.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3287 self.delete(&Delete, cx);
3288 self.end_transaction(cx);
3289 }
3290
3291 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
3292 self.start_transaction(cx);
3293 self.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3294 self.cut(&Cut, cx);
3295 self.end_transaction(cx);
3296 }
3297
3298 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
3299 if matches!(self.mode, EditorMode::SingleLine) {
3300 cx.propagate_action();
3301 return;
3302 }
3303
3304 let selection = Selection {
3305 id: post_inc(&mut self.next_selection_id),
3306 start: 0,
3307 end: 0,
3308 reversed: false,
3309 goal: SelectionGoal::None,
3310 };
3311 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3312 }
3313
3314 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
3315 let mut selection = self.local_selections::<Point>(cx).last().unwrap().clone();
3316 selection.set_head(Point::zero());
3317 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3318 }
3319
3320 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
3321 if matches!(self.mode, EditorMode::SingleLine) {
3322 cx.propagate_action();
3323 return;
3324 }
3325
3326 let cursor = self.buffer.read(cx).read(cx).len();
3327 let selection = Selection {
3328 id: post_inc(&mut self.next_selection_id),
3329 start: cursor,
3330 end: cursor,
3331 reversed: false,
3332 goal: SelectionGoal::None,
3333 };
3334 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3335 }
3336
3337 pub fn set_nav_history(&mut self, nav_history: Option<ItemNavHistory>) {
3338 self.nav_history = nav_history;
3339 }
3340
3341 pub fn nav_history(&self) -> Option<&ItemNavHistory> {
3342 self.nav_history.as_ref()
3343 }
3344
3345 fn push_to_nav_history(
3346 &self,
3347 position: Anchor,
3348 new_position: Option<Point>,
3349 cx: &mut ViewContext<Self>,
3350 ) {
3351 if let Some(nav_history) = &self.nav_history {
3352 let buffer = self.buffer.read(cx).read(cx);
3353 let offset = position.to_offset(&buffer);
3354 let point = position.to_point(&buffer);
3355 drop(buffer);
3356
3357 if let Some(new_position) = new_position {
3358 let row_delta = (new_position.row as i64 - point.row as i64).abs();
3359 if row_delta < MIN_NAVIGATION_HISTORY_ROW_DELTA {
3360 return;
3361 }
3362 }
3363
3364 nav_history.push(Some(NavigationData {
3365 anchor: position,
3366 offset,
3367 }));
3368 }
3369 }
3370
3371 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
3372 let mut selection = self.local_selections::<usize>(cx).first().unwrap().clone();
3373 selection.set_head(self.buffer.read(cx).read(cx).len());
3374 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3375 }
3376
3377 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
3378 let selection = Selection {
3379 id: post_inc(&mut self.next_selection_id),
3380 start: 0,
3381 end: self.buffer.read(cx).read(cx).len(),
3382 reversed: false,
3383 goal: SelectionGoal::None,
3384 };
3385 self.update_selections(vec![selection], None, cx);
3386 }
3387
3388 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
3389 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3390 let mut selections = self.local_selections::<Point>(cx);
3391 let max_point = display_map.buffer_snapshot.max_point();
3392 for selection in &mut selections {
3393 let rows = selection.spanned_rows(true, &display_map);
3394 selection.start = Point::new(rows.start, 0);
3395 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
3396 selection.reversed = false;
3397 }
3398 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3399 }
3400
3401 pub fn split_selection_into_lines(
3402 &mut self,
3403 _: &SplitSelectionIntoLines,
3404 cx: &mut ViewContext<Self>,
3405 ) {
3406 let mut to_unfold = Vec::new();
3407 let mut new_selections = Vec::new();
3408 {
3409 let selections = self.local_selections::<Point>(cx);
3410 let buffer = self.buffer.read(cx).read(cx);
3411 for selection in selections {
3412 for row in selection.start.row..selection.end.row {
3413 let cursor = Point::new(row, buffer.line_len(row));
3414 new_selections.push(Selection {
3415 id: post_inc(&mut self.next_selection_id),
3416 start: cursor,
3417 end: cursor,
3418 reversed: false,
3419 goal: SelectionGoal::None,
3420 });
3421 }
3422 new_selections.push(Selection {
3423 id: selection.id,
3424 start: selection.end,
3425 end: selection.end,
3426 reversed: false,
3427 goal: SelectionGoal::None,
3428 });
3429 to_unfold.push(selection.start..selection.end);
3430 }
3431 }
3432 self.unfold_ranges(to_unfold, cx);
3433 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3434 }
3435
3436 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
3437 self.add_selection(true, cx);
3438 }
3439
3440 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
3441 self.add_selection(false, cx);
3442 }
3443
3444 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
3445 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3446 let mut selections = self.local_selections::<Point>(cx);
3447 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
3448 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
3449 let range = oldest_selection.display_range(&display_map).sorted();
3450 let columns = cmp::min(range.start.column(), range.end.column())
3451 ..cmp::max(range.start.column(), range.end.column());
3452
3453 selections.clear();
3454 let mut stack = Vec::new();
3455 for row in range.start.row()..=range.end.row() {
3456 if let Some(selection) = self.build_columnar_selection(
3457 &display_map,
3458 row,
3459 &columns,
3460 oldest_selection.reversed,
3461 ) {
3462 stack.push(selection.id);
3463 selections.push(selection);
3464 }
3465 }
3466
3467 if above {
3468 stack.reverse();
3469 }
3470
3471 AddSelectionsState { above, stack }
3472 });
3473
3474 let last_added_selection = *state.stack.last().unwrap();
3475 let mut new_selections = Vec::new();
3476 if above == state.above {
3477 let end_row = if above {
3478 0
3479 } else {
3480 display_map.max_point().row()
3481 };
3482
3483 'outer: for selection in selections {
3484 if selection.id == last_added_selection {
3485 let range = selection.display_range(&display_map).sorted();
3486 debug_assert_eq!(range.start.row(), range.end.row());
3487 let mut row = range.start.row();
3488 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
3489 {
3490 start..end
3491 } else {
3492 cmp::min(range.start.column(), range.end.column())
3493 ..cmp::max(range.start.column(), range.end.column())
3494 };
3495
3496 while row != end_row {
3497 if above {
3498 row -= 1;
3499 } else {
3500 row += 1;
3501 }
3502
3503 if let Some(new_selection) = self.build_columnar_selection(
3504 &display_map,
3505 row,
3506 &columns,
3507 selection.reversed,
3508 ) {
3509 state.stack.push(new_selection.id);
3510 if above {
3511 new_selections.push(new_selection);
3512 new_selections.push(selection);
3513 } else {
3514 new_selections.push(selection);
3515 new_selections.push(new_selection);
3516 }
3517
3518 continue 'outer;
3519 }
3520 }
3521 }
3522
3523 new_selections.push(selection);
3524 }
3525 } else {
3526 new_selections = selections;
3527 new_selections.retain(|s| s.id != last_added_selection);
3528 state.stack.pop();
3529 }
3530
3531 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3532 if state.stack.len() > 1 {
3533 self.add_selections_state = Some(state);
3534 }
3535 }
3536
3537 pub fn select_next(&mut self, action: &SelectNext, cx: &mut ViewContext<Self>) {
3538 let replace_newest = action.0;
3539 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3540 let buffer = &display_map.buffer_snapshot;
3541 let mut selections = self.local_selections::<usize>(cx);
3542 if let Some(mut select_next_state) = self.select_next_state.take() {
3543 let query = &select_next_state.query;
3544 if !select_next_state.done {
3545 let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
3546 let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
3547 let mut next_selected_range = None;
3548
3549 let bytes_after_last_selection =
3550 buffer.bytes_in_range(last_selection.end..buffer.len());
3551 let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
3552 let query_matches = query
3553 .stream_find_iter(bytes_after_last_selection)
3554 .map(|result| (last_selection.end, result))
3555 .chain(
3556 query
3557 .stream_find_iter(bytes_before_first_selection)
3558 .map(|result| (0, result)),
3559 );
3560 for (start_offset, query_match) in query_matches {
3561 let query_match = query_match.unwrap(); // can only fail due to I/O
3562 let offset_range =
3563 start_offset + query_match.start()..start_offset + query_match.end();
3564 let display_range = offset_range.start.to_display_point(&display_map)
3565 ..offset_range.end.to_display_point(&display_map);
3566
3567 if !select_next_state.wordwise
3568 || (!movement::is_inside_word(&display_map, display_range.start)
3569 && !movement::is_inside_word(&display_map, display_range.end))
3570 {
3571 next_selected_range = Some(offset_range);
3572 break;
3573 }
3574 }
3575
3576 if let Some(next_selected_range) = next_selected_range {
3577 if replace_newest {
3578 if let Some(newest_id) =
3579 selections.iter().max_by_key(|s| s.id).map(|s| s.id)
3580 {
3581 selections.retain(|s| s.id != newest_id);
3582 }
3583 }
3584 selections.push(Selection {
3585 id: post_inc(&mut self.next_selection_id),
3586 start: next_selected_range.start,
3587 end: next_selected_range.end,
3588 reversed: false,
3589 goal: SelectionGoal::None,
3590 });
3591 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3592 } else {
3593 select_next_state.done = true;
3594 }
3595 }
3596
3597 self.select_next_state = Some(select_next_state);
3598 } else if selections.len() == 1 {
3599 let selection = selections.last_mut().unwrap();
3600 if selection.start == selection.end {
3601 let word_range = movement::surrounding_word(
3602 &display_map,
3603 selection.start.to_display_point(&display_map),
3604 );
3605 selection.start = word_range.start.to_offset(&display_map, Bias::Left);
3606 selection.end = word_range.end.to_offset(&display_map, Bias::Left);
3607 selection.goal = SelectionGoal::None;
3608 selection.reversed = false;
3609
3610 let query = buffer
3611 .text_for_range(selection.start..selection.end)
3612 .collect::<String>();
3613 let select_state = SelectNextState {
3614 query: AhoCorasick::new_auto_configured(&[query]),
3615 wordwise: true,
3616 done: false,
3617 };
3618 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3619 self.select_next_state = Some(select_state);
3620 } else {
3621 let query = buffer
3622 .text_for_range(selection.start..selection.end)
3623 .collect::<String>();
3624 self.select_next_state = Some(SelectNextState {
3625 query: AhoCorasick::new_auto_configured(&[query]),
3626 wordwise: false,
3627 done: false,
3628 });
3629 self.select_next(action, cx);
3630 }
3631 }
3632 }
3633
3634 pub fn toggle_comments(&mut self, _: &ToggleComments, cx: &mut ViewContext<Self>) {
3635 // Get the line comment prefix. Split its trailing whitespace into a separate string,
3636 // as that portion won't be used for detecting if a line is a comment.
3637 let full_comment_prefix =
3638 if let Some(prefix) = self.language(cx).and_then(|l| l.line_comment_prefix()) {
3639 prefix.to_string()
3640 } else {
3641 return;
3642 };
3643 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
3644 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
3645
3646 self.start_transaction(cx);
3647 let mut selections = self.local_selections::<Point>(cx);
3648 let mut all_selection_lines_are_comments = true;
3649 let mut edit_ranges = Vec::new();
3650 let mut last_toggled_row = None;
3651 self.buffer.update(cx, |buffer, cx| {
3652 for selection in &mut selections {
3653 edit_ranges.clear();
3654 let snapshot = buffer.snapshot(cx);
3655
3656 let end_row =
3657 if selection.end.row > selection.start.row && selection.end.column == 0 {
3658 selection.end.row
3659 } else {
3660 selection.end.row + 1
3661 };
3662
3663 for row in selection.start.row..end_row {
3664 // If multiple selections contain a given row, avoid processing that
3665 // row more than once.
3666 if last_toggled_row == Some(row) {
3667 continue;
3668 } else {
3669 last_toggled_row = Some(row);
3670 }
3671
3672 if snapshot.is_line_blank(row) {
3673 continue;
3674 }
3675
3676 let start = Point::new(row, snapshot.indent_column_for_line(row));
3677 let mut line_bytes = snapshot
3678 .bytes_in_range(start..snapshot.max_point())
3679 .flatten()
3680 .copied();
3681
3682 // If this line currently begins with the line comment prefix, then record
3683 // the range containing the prefix.
3684 if all_selection_lines_are_comments
3685 && line_bytes
3686 .by_ref()
3687 .take(comment_prefix.len())
3688 .eq(comment_prefix.bytes())
3689 {
3690 // Include any whitespace that matches the comment prefix.
3691 let matching_whitespace_len = line_bytes
3692 .zip(comment_prefix_whitespace.bytes())
3693 .take_while(|(a, b)| a == b)
3694 .count() as u32;
3695 let end = Point::new(
3696 row,
3697 start.column + comment_prefix.len() as u32 + matching_whitespace_len,
3698 );
3699 edit_ranges.push(start..end);
3700 }
3701 // If this line does not begin with the line comment prefix, then record
3702 // the position where the prefix should be inserted.
3703 else {
3704 all_selection_lines_are_comments = false;
3705 edit_ranges.push(start..start);
3706 }
3707 }
3708
3709 if !edit_ranges.is_empty() {
3710 if all_selection_lines_are_comments {
3711 buffer.edit(edit_ranges.iter().cloned(), "", cx);
3712 } else {
3713 let min_column = edit_ranges.iter().map(|r| r.start.column).min().unwrap();
3714 let edit_ranges = edit_ranges.iter().map(|range| {
3715 let position = Point::new(range.start.row, min_column);
3716 position..position
3717 });
3718 buffer.edit(edit_ranges, &full_comment_prefix, cx);
3719 }
3720 }
3721 }
3722 });
3723
3724 self.update_selections(
3725 self.local_selections::<usize>(cx),
3726 Some(Autoscroll::Fit),
3727 cx,
3728 );
3729 self.end_transaction(cx);
3730 }
3731
3732 pub fn select_larger_syntax_node(
3733 &mut self,
3734 _: &SelectLargerSyntaxNode,
3735 cx: &mut ViewContext<Self>,
3736 ) {
3737 let old_selections = self.local_selections::<usize>(cx).into_boxed_slice();
3738 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3739 let buffer = self.buffer.read(cx).snapshot(cx);
3740
3741 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
3742 let mut selected_larger_node = false;
3743 let new_selections = old_selections
3744 .iter()
3745 .map(|selection| {
3746 let old_range = selection.start..selection.end;
3747 let mut new_range = old_range.clone();
3748 while let Some(containing_range) =
3749 buffer.range_for_syntax_ancestor(new_range.clone())
3750 {
3751 new_range = containing_range;
3752 if !display_map.intersects_fold(new_range.start)
3753 && !display_map.intersects_fold(new_range.end)
3754 {
3755 break;
3756 }
3757 }
3758
3759 selected_larger_node |= new_range != old_range;
3760 Selection {
3761 id: selection.id,
3762 start: new_range.start,
3763 end: new_range.end,
3764 goal: SelectionGoal::None,
3765 reversed: selection.reversed,
3766 }
3767 })
3768 .collect::<Vec<_>>();
3769
3770 if selected_larger_node {
3771 stack.push(old_selections);
3772 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3773 }
3774 self.select_larger_syntax_node_stack = stack;
3775 }
3776
3777 pub fn select_smaller_syntax_node(
3778 &mut self,
3779 _: &SelectSmallerSyntaxNode,
3780 cx: &mut ViewContext<Self>,
3781 ) {
3782 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
3783 if let Some(selections) = stack.pop() {
3784 self.update_selections(selections.to_vec(), Some(Autoscroll::Fit), cx);
3785 }
3786 self.select_larger_syntax_node_stack = stack;
3787 }
3788
3789 pub fn move_to_enclosing_bracket(
3790 &mut self,
3791 _: &MoveToEnclosingBracket,
3792 cx: &mut ViewContext<Self>,
3793 ) {
3794 let mut selections = self.local_selections::<usize>(cx);
3795 let buffer = self.buffer.read(cx).snapshot(cx);
3796 for selection in &mut selections {
3797 if let Some((open_range, close_range)) =
3798 buffer.enclosing_bracket_ranges(selection.start..selection.end)
3799 {
3800 let close_range = close_range.to_inclusive();
3801 let destination = if close_range.contains(&selection.start)
3802 && close_range.contains(&selection.end)
3803 {
3804 open_range.end
3805 } else {
3806 *close_range.start()
3807 };
3808 selection.start = destination;
3809 selection.end = destination;
3810 }
3811 }
3812
3813 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3814 }
3815
3816 pub fn show_next_diagnostic(&mut self, _: &ShowNextDiagnostic, cx: &mut ViewContext<Self>) {
3817 let buffer = self.buffer.read(cx).snapshot(cx);
3818 let selection = self.newest_selection::<usize>(&buffer);
3819 let mut active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
3820 active_diagnostics
3821 .primary_range
3822 .to_offset(&buffer)
3823 .to_inclusive()
3824 });
3825 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
3826 if active_primary_range.contains(&selection.head()) {
3827 *active_primary_range.end()
3828 } else {
3829 selection.head()
3830 }
3831 } else {
3832 selection.head()
3833 };
3834
3835 loop {
3836 let next_group = buffer
3837 .diagnostics_in_range::<_, usize>(search_start..buffer.len())
3838 .find_map(|entry| {
3839 if entry.diagnostic.is_primary
3840 && !entry.range.is_empty()
3841 && Some(entry.range.end) != active_primary_range.as_ref().map(|r| *r.end())
3842 {
3843 Some((entry.range, entry.diagnostic.group_id))
3844 } else {
3845 None
3846 }
3847 });
3848
3849 if let Some((primary_range, group_id)) = next_group {
3850 self.activate_diagnostics(group_id, cx);
3851 self.update_selections(
3852 vec![Selection {
3853 id: selection.id,
3854 start: primary_range.start,
3855 end: primary_range.start,
3856 reversed: false,
3857 goal: SelectionGoal::None,
3858 }],
3859 Some(Autoscroll::Center),
3860 cx,
3861 );
3862 break;
3863 } else if search_start == 0 {
3864 break;
3865 } else {
3866 // Cycle around to the start of the buffer, potentially moving back to the start of
3867 // the currently active diagnostic.
3868 search_start = 0;
3869 active_primary_range.take();
3870 }
3871 }
3872 }
3873
3874 pub fn go_to_definition(
3875 workspace: &mut Workspace,
3876 _: &GoToDefinition,
3877 cx: &mut ViewContext<Workspace>,
3878 ) {
3879 let active_item = workspace.active_item(cx);
3880 let editor_handle = if let Some(editor) = active_item
3881 .as_ref()
3882 .and_then(|item| item.act_as::<Self>(cx))
3883 {
3884 editor
3885 } else {
3886 return;
3887 };
3888
3889 let editor = editor_handle.read(cx);
3890 let buffer = editor.buffer.read(cx);
3891 let head = editor.newest_selection::<usize>(&buffer.read(cx)).head();
3892 let (buffer, head) = editor.buffer.read(cx).text_anchor_for_position(head, cx);
3893 let definitions = workspace
3894 .project()
3895 .update(cx, |project, cx| project.definition(&buffer, head, cx));
3896 cx.spawn(|workspace, mut cx| async move {
3897 let definitions = definitions.await?;
3898 workspace.update(&mut cx, |workspace, cx| {
3899 for definition in definitions {
3900 let range = definition
3901 .target_range
3902 .to_offset(definition.target_buffer.read(cx));
3903 let target_editor_handle = workspace
3904 .open_item(BufferItemHandle(definition.target_buffer), cx)
3905 .downcast::<Self>()
3906 .unwrap();
3907
3908 target_editor_handle.update(cx, |target_editor, cx| {
3909 // When selecting a definition in a different buffer, disable the nav history
3910 // to avoid creating a history entry at the previous cursor location.
3911 let disabled_history = if editor_handle == target_editor_handle {
3912 None
3913 } else {
3914 target_editor.nav_history.take()
3915 };
3916 target_editor.select_ranges([range], Some(Autoscroll::Center), cx);
3917 if disabled_history.is_some() {
3918 target_editor.nav_history = disabled_history;
3919 }
3920 });
3921 }
3922 });
3923
3924 Ok::<(), anyhow::Error>(())
3925 })
3926 .detach_and_log_err(cx);
3927 }
3928
3929 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
3930 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
3931 let buffer = self.buffer.read(cx).snapshot(cx);
3932 let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
3933 let is_valid = buffer
3934 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone())
3935 .any(|entry| {
3936 entry.diagnostic.is_primary
3937 && !entry.range.is_empty()
3938 && entry.range.start == primary_range_start
3939 && entry.diagnostic.message == active_diagnostics.primary_message
3940 });
3941
3942 if is_valid != active_diagnostics.is_valid {
3943 active_diagnostics.is_valid = is_valid;
3944 let mut new_styles = HashMap::default();
3945 for (block_id, diagnostic) in &active_diagnostics.blocks {
3946 new_styles.insert(
3947 *block_id,
3948 diagnostic_block_renderer(
3949 diagnostic.clone(),
3950 is_valid,
3951 self.build_settings.clone(),
3952 ),
3953 );
3954 }
3955 self.display_map
3956 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
3957 }
3958 }
3959 }
3960
3961 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) {
3962 self.dismiss_diagnostics(cx);
3963 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
3964 let buffer = self.buffer.read(cx).snapshot(cx);
3965
3966 let mut primary_range = None;
3967 let mut primary_message = None;
3968 let mut group_end = Point::zero();
3969 let diagnostic_group = buffer
3970 .diagnostic_group::<Point>(group_id)
3971 .map(|entry| {
3972 if entry.range.end > group_end {
3973 group_end = entry.range.end;
3974 }
3975 if entry.diagnostic.is_primary {
3976 primary_range = Some(entry.range.clone());
3977 primary_message = Some(entry.diagnostic.message.clone());
3978 }
3979 entry
3980 })
3981 .collect::<Vec<_>>();
3982 let primary_range = primary_range.unwrap();
3983 let primary_message = primary_message.unwrap();
3984 let primary_range =
3985 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
3986
3987 let blocks = display_map
3988 .insert_blocks(
3989 diagnostic_group.iter().map(|entry| {
3990 let build_settings = self.build_settings.clone();
3991 let diagnostic = entry.diagnostic.clone();
3992 let message_height = diagnostic.message.lines().count() as u8;
3993
3994 BlockProperties {
3995 position: buffer.anchor_after(entry.range.start),
3996 height: message_height,
3997 render: diagnostic_block_renderer(diagnostic, true, build_settings),
3998 disposition: BlockDisposition::Below,
3999 }
4000 }),
4001 cx,
4002 )
4003 .into_iter()
4004 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
4005 .collect();
4006
4007 Some(ActiveDiagnosticGroup {
4008 primary_range,
4009 primary_message,
4010 blocks,
4011 is_valid: true,
4012 })
4013 });
4014 }
4015
4016 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
4017 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
4018 self.display_map.update(cx, |display_map, cx| {
4019 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
4020 });
4021 cx.notify();
4022 }
4023 }
4024
4025 fn build_columnar_selection(
4026 &mut self,
4027 display_map: &DisplaySnapshot,
4028 row: u32,
4029 columns: &Range<u32>,
4030 reversed: bool,
4031 ) -> Option<Selection<Point>> {
4032 let is_empty = columns.start == columns.end;
4033 let line_len = display_map.line_len(row);
4034 if columns.start < line_len || (is_empty && columns.start == line_len) {
4035 let start = DisplayPoint::new(row, columns.start);
4036 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
4037 Some(Selection {
4038 id: post_inc(&mut self.next_selection_id),
4039 start: start.to_point(display_map),
4040 end: end.to_point(display_map),
4041 reversed,
4042 goal: SelectionGoal::ColumnRange {
4043 start: columns.start,
4044 end: columns.end,
4045 },
4046 })
4047 } else {
4048 None
4049 }
4050 }
4051
4052 pub fn local_selections_in_range(
4053 &self,
4054 range: Range<Anchor>,
4055 display_map: &DisplaySnapshot,
4056 ) -> Vec<Selection<Point>> {
4057 let buffer = &display_map.buffer_snapshot;
4058
4059 let start_ix = match self
4060 .selections
4061 .binary_search_by(|probe| probe.end.cmp(&range.start, &buffer).unwrap())
4062 {
4063 Ok(ix) | Err(ix) => ix,
4064 };
4065 let end_ix = match self
4066 .selections
4067 .binary_search_by(|probe| probe.start.cmp(&range.end, &buffer).unwrap())
4068 {
4069 Ok(ix) => ix + 1,
4070 Err(ix) => ix,
4071 };
4072
4073 fn point_selection(
4074 selection: &Selection<Anchor>,
4075 buffer: &MultiBufferSnapshot,
4076 ) -> Selection<Point> {
4077 let start = selection.start.to_point(&buffer);
4078 let end = selection.end.to_point(&buffer);
4079 Selection {
4080 id: selection.id,
4081 start,
4082 end,
4083 reversed: selection.reversed,
4084 goal: selection.goal,
4085 }
4086 }
4087
4088 self.selections[start_ix..end_ix]
4089 .iter()
4090 .chain(
4091 self.pending_selection
4092 .as_ref()
4093 .map(|pending| &pending.selection),
4094 )
4095 .map(|s| point_selection(s, &buffer))
4096 .collect()
4097 }
4098
4099 pub fn local_selections<'a, D>(&self, cx: &'a AppContext) -> Vec<Selection<D>>
4100 where
4101 D: 'a + TextDimension + Ord + Sub<D, Output = D>,
4102 {
4103 let buffer = self.buffer.read(cx).snapshot(cx);
4104 let mut selections = self
4105 .resolve_selections::<D, _>(self.selections.iter(), &buffer)
4106 .peekable();
4107
4108 let mut pending_selection = self.pending_selection::<D>(&buffer);
4109
4110 iter::from_fn(move || {
4111 if let Some(pending) = pending_selection.as_mut() {
4112 while let Some(next_selection) = selections.peek() {
4113 if pending.start <= next_selection.end && pending.end >= next_selection.start {
4114 let next_selection = selections.next().unwrap();
4115 if next_selection.start < pending.start {
4116 pending.start = next_selection.start;
4117 }
4118 if next_selection.end > pending.end {
4119 pending.end = next_selection.end;
4120 }
4121 } else if next_selection.end < pending.start {
4122 return selections.next();
4123 } else {
4124 break;
4125 }
4126 }
4127
4128 pending_selection.take()
4129 } else {
4130 selections.next()
4131 }
4132 })
4133 .collect()
4134 }
4135
4136 fn resolve_selections<'a, D, I>(
4137 &self,
4138 selections: I,
4139 snapshot: &MultiBufferSnapshot,
4140 ) -> impl 'a + Iterator<Item = Selection<D>>
4141 where
4142 D: TextDimension + Ord + Sub<D, Output = D>,
4143 I: 'a + IntoIterator<Item = &'a Selection<Anchor>>,
4144 {
4145 let (to_summarize, selections) = selections.into_iter().tee();
4146 let mut summaries = snapshot
4147 .summaries_for_anchors::<D, _>(to_summarize.flat_map(|s| [&s.start, &s.end]))
4148 .into_iter();
4149 selections.map(move |s| Selection {
4150 id: s.id,
4151 start: summaries.next().unwrap(),
4152 end: summaries.next().unwrap(),
4153 reversed: s.reversed,
4154 goal: s.goal,
4155 })
4156 }
4157
4158 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4159 &self,
4160 snapshot: &MultiBufferSnapshot,
4161 ) -> Option<Selection<D>> {
4162 self.pending_selection
4163 .as_ref()
4164 .map(|pending| self.resolve_selection(&pending.selection, &snapshot))
4165 }
4166
4167 fn resolve_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4168 &self,
4169 selection: &Selection<Anchor>,
4170 buffer: &MultiBufferSnapshot,
4171 ) -> Selection<D> {
4172 Selection {
4173 id: selection.id,
4174 start: selection.start.summary::<D>(&buffer),
4175 end: selection.end.summary::<D>(&buffer),
4176 reversed: selection.reversed,
4177 goal: selection.goal,
4178 }
4179 }
4180
4181 fn selection_count<'a>(&self) -> usize {
4182 let mut count = self.selections.len();
4183 if self.pending_selection.is_some() {
4184 count += 1;
4185 }
4186 count
4187 }
4188
4189 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4190 &self,
4191 snapshot: &MultiBufferSnapshot,
4192 ) -> Selection<D> {
4193 self.selections
4194 .iter()
4195 .min_by_key(|s| s.id)
4196 .map(|selection| self.resolve_selection(selection, snapshot))
4197 .or_else(|| self.pending_selection(snapshot))
4198 .unwrap()
4199 }
4200
4201 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4202 &self,
4203 snapshot: &MultiBufferSnapshot,
4204 ) -> Selection<D> {
4205 self.resolve_selection(self.newest_anchor_selection().unwrap(), snapshot)
4206 }
4207
4208 pub fn newest_anchor_selection(&self) -> Option<&Selection<Anchor>> {
4209 self.pending_selection
4210 .as_ref()
4211 .map(|s| &s.selection)
4212 .or_else(|| self.selections.iter().max_by_key(|s| s.id))
4213 }
4214
4215 pub fn update_selections<T>(
4216 &mut self,
4217 mut selections: Vec<Selection<T>>,
4218 autoscroll: Option<Autoscroll>,
4219 cx: &mut ViewContext<Self>,
4220 ) where
4221 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
4222 {
4223 let buffer = self.buffer.read(cx).snapshot(cx);
4224 selections.sort_unstable_by_key(|s| s.start);
4225
4226 // Merge overlapping selections.
4227 let mut i = 1;
4228 while i < selections.len() {
4229 if selections[i - 1].end >= selections[i].start {
4230 let removed = selections.remove(i);
4231 if removed.start < selections[i - 1].start {
4232 selections[i - 1].start = removed.start;
4233 }
4234 if removed.end > selections[i - 1].end {
4235 selections[i - 1].end = removed.end;
4236 }
4237 } else {
4238 i += 1;
4239 }
4240 }
4241
4242 if let Some(autoscroll) = autoscroll {
4243 self.request_autoscroll(autoscroll, cx);
4244 }
4245
4246 self.set_selections(
4247 Arc::from_iter(selections.into_iter().map(|selection| {
4248 let end_bias = if selection.end > selection.start {
4249 Bias::Left
4250 } else {
4251 Bias::Right
4252 };
4253 Selection {
4254 id: selection.id,
4255 start: buffer.anchor_after(selection.start),
4256 end: buffer.anchor_at(selection.end, end_bias),
4257 reversed: selection.reversed,
4258 goal: selection.goal,
4259 }
4260 })),
4261 cx,
4262 );
4263 }
4264
4265 /// Compute new ranges for any selections that were located in excerpts that have
4266 /// since been removed.
4267 ///
4268 /// Returns a `HashMap` indicating which selections whose former head position
4269 /// was no longer present. The keys of the map are selection ids. The values are
4270 /// the id of the new excerpt where the head of the selection has been moved.
4271 pub fn refresh_selections(&mut self, cx: &mut ViewContext<Self>) -> HashMap<usize, ExcerptId> {
4272 let snapshot = self.buffer.read(cx).read(cx);
4273 let anchors_with_status = snapshot.refresh_anchors(
4274 self.selections
4275 .iter()
4276 .flat_map(|selection| [&selection.start, &selection.end]),
4277 );
4278 let offsets =
4279 snapshot.summaries_for_anchors::<usize, _>(anchors_with_status.iter().map(|a| &a.1));
4280 let offsets = offsets.chunks(2);
4281 let statuses = anchors_with_status
4282 .chunks(2)
4283 .map(|a| (a[0].0 / 2, a[0].2, a[1].2));
4284
4285 let mut selections_with_lost_position = HashMap::default();
4286 let new_selections = offsets
4287 .zip(statuses)
4288 .map(|(offsets, (selection_ix, kept_start, kept_end))| {
4289 let selection = &self.selections[selection_ix];
4290 let kept_head = if selection.reversed {
4291 kept_start
4292 } else {
4293 kept_end
4294 };
4295 if !kept_head {
4296 selections_with_lost_position
4297 .insert(selection.id, selection.head().excerpt_id.clone());
4298 }
4299
4300 Selection {
4301 id: selection.id,
4302 start: offsets[0],
4303 end: offsets[1],
4304 reversed: selection.reversed,
4305 goal: selection.goal,
4306 }
4307 })
4308 .collect();
4309 drop(snapshot);
4310 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
4311 selections_with_lost_position
4312 }
4313
4314 fn set_selections(&mut self, selections: Arc<[Selection<Anchor>]>, cx: &mut ViewContext<Self>) {
4315 let old_cursor_position = self.newest_anchor_selection().map(|s| s.head());
4316 self.selections = selections;
4317 if self.focused {
4318 self.buffer.update(cx, |buffer, cx| {
4319 buffer.set_active_selections(&self.selections, cx)
4320 });
4321 }
4322
4323 let buffer = self.buffer.read(cx).snapshot(cx);
4324 self.pending_selection = None;
4325 self.add_selections_state = None;
4326 self.select_next_state = None;
4327 self.select_larger_syntax_node_stack.clear();
4328 self.autoclose_stack.invalidate(&self.selections, &buffer);
4329 self.snippet_stack.invalidate(&self.selections, &buffer);
4330
4331 let new_cursor_position = self
4332 .selections
4333 .iter()
4334 .max_by_key(|s| s.id)
4335 .map(|s| s.head());
4336 if let Some(old_cursor_position) = old_cursor_position {
4337 if let Some(new_cursor_position) = new_cursor_position.as_ref() {
4338 self.push_to_nav_history(
4339 old_cursor_position,
4340 Some(new_cursor_position.to_point(&buffer)),
4341 cx,
4342 );
4343 }
4344 }
4345
4346 let completion_menu = match self.context_menu.as_mut() {
4347 Some(ContextMenu::Completions(menu)) => Some(menu),
4348 _ => {
4349 self.context_menu.take();
4350 None
4351 }
4352 };
4353
4354 if let Some((completion_menu, cursor_position)) = completion_menu.zip(new_cursor_position) {
4355 let cursor_position = cursor_position.to_offset(&buffer);
4356 let (word_range, kind) =
4357 buffer.surrounding_word(completion_menu.initial_position.clone());
4358 if kind == Some(CharKind::Word) && word_range.to_inclusive().contains(&cursor_position)
4359 {
4360 let query = Self::completion_query(&buffer, cursor_position);
4361 cx.background()
4362 .block(completion_menu.filter(query.as_deref(), cx.background().clone()));
4363 self.show_completions(&ShowCompletions, cx);
4364 } else {
4365 self.hide_context_menu(cx);
4366 }
4367 }
4368
4369 self.pause_cursor_blinking(cx);
4370 cx.emit(Event::SelectionsChanged);
4371 }
4372
4373 pub fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
4374 self.autoscroll_request = Some(autoscroll);
4375 cx.notify();
4376 }
4377
4378 fn start_transaction(&mut self, cx: &mut ViewContext<Self>) {
4379 self.start_transaction_at(Instant::now(), cx);
4380 }
4381
4382 fn start_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
4383 self.end_selection(cx);
4384 if let Some(tx_id) = self
4385 .buffer
4386 .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
4387 {
4388 self.selection_history
4389 .insert(tx_id, (self.selections.clone(), None));
4390 }
4391 }
4392
4393 fn end_transaction(&mut self, cx: &mut ViewContext<Self>) {
4394 self.end_transaction_at(Instant::now(), cx);
4395 }
4396
4397 fn end_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
4398 if let Some(tx_id) = self
4399 .buffer
4400 .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
4401 {
4402 if let Some((_, end_selections)) = self.selection_history.get_mut(&tx_id) {
4403 *end_selections = Some(self.selections.clone());
4404 } else {
4405 log::error!("unexpectedly ended a transaction that wasn't started by this editor");
4406 }
4407 }
4408 }
4409
4410 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
4411 log::info!("Editor::page_up");
4412 }
4413
4414 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
4415 log::info!("Editor::page_down");
4416 }
4417
4418 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
4419 let mut fold_ranges = Vec::new();
4420
4421 let selections = self.local_selections::<Point>(cx);
4422 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4423 for selection in selections {
4424 let range = selection.display_range(&display_map).sorted();
4425 let buffer_start_row = range.start.to_point(&display_map).row;
4426
4427 for row in (0..=range.end.row()).rev() {
4428 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
4429 let fold_range = self.foldable_range_for_line(&display_map, row);
4430 if fold_range.end.row >= buffer_start_row {
4431 fold_ranges.push(fold_range);
4432 if row <= range.start.row() {
4433 break;
4434 }
4435 }
4436 }
4437 }
4438 }
4439
4440 self.fold_ranges(fold_ranges, cx);
4441 }
4442
4443 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
4444 let selections = self.local_selections::<Point>(cx);
4445 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4446 let buffer = &display_map.buffer_snapshot;
4447 let ranges = selections
4448 .iter()
4449 .map(|s| {
4450 let range = s.display_range(&display_map).sorted();
4451 let mut start = range.start.to_point(&display_map);
4452 let mut end = range.end.to_point(&display_map);
4453 start.column = 0;
4454 end.column = buffer.line_len(end.row);
4455 start..end
4456 })
4457 .collect::<Vec<_>>();
4458 self.unfold_ranges(ranges, cx);
4459 }
4460
4461 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
4462 let max_point = display_map.max_point();
4463 if display_row >= max_point.row() {
4464 false
4465 } else {
4466 let (start_indent, is_blank) = display_map.line_indent(display_row);
4467 if is_blank {
4468 false
4469 } else {
4470 for display_row in display_row + 1..=max_point.row() {
4471 let (indent, is_blank) = display_map.line_indent(display_row);
4472 if !is_blank {
4473 return indent > start_indent;
4474 }
4475 }
4476 false
4477 }
4478 }
4479 }
4480
4481 fn foldable_range_for_line(
4482 &self,
4483 display_map: &DisplaySnapshot,
4484 start_row: u32,
4485 ) -> Range<Point> {
4486 let max_point = display_map.max_point();
4487
4488 let (start_indent, _) = display_map.line_indent(start_row);
4489 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
4490 let mut end = None;
4491 for row in start_row + 1..=max_point.row() {
4492 let (indent, is_blank) = display_map.line_indent(row);
4493 if !is_blank && indent <= start_indent {
4494 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
4495 break;
4496 }
4497 }
4498
4499 let end = end.unwrap_or(max_point);
4500 return start.to_point(display_map)..end.to_point(display_map);
4501 }
4502
4503 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
4504 let selections = self.local_selections::<Point>(cx);
4505 let ranges = selections.into_iter().map(|s| s.start..s.end);
4506 self.fold_ranges(ranges, cx);
4507 }
4508
4509 fn fold_ranges<T: ToOffset>(
4510 &mut self,
4511 ranges: impl IntoIterator<Item = Range<T>>,
4512 cx: &mut ViewContext<Self>,
4513 ) {
4514 let mut ranges = ranges.into_iter().peekable();
4515 if ranges.peek().is_some() {
4516 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
4517 self.request_autoscroll(Autoscroll::Fit, cx);
4518 cx.notify();
4519 }
4520 }
4521
4522 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
4523 if !ranges.is_empty() {
4524 self.display_map
4525 .update(cx, |map, cx| map.unfold(ranges, cx));
4526 self.request_autoscroll(Autoscroll::Fit, cx);
4527 cx.notify();
4528 }
4529 }
4530
4531 pub fn insert_blocks(
4532 &mut self,
4533 blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
4534 cx: &mut ViewContext<Self>,
4535 ) -> Vec<BlockId> {
4536 let blocks = self
4537 .display_map
4538 .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
4539 self.request_autoscroll(Autoscroll::Fit, cx);
4540 blocks
4541 }
4542
4543 pub fn replace_blocks(
4544 &mut self,
4545 blocks: HashMap<BlockId, RenderBlock>,
4546 cx: &mut ViewContext<Self>,
4547 ) {
4548 self.display_map
4549 .update(cx, |display_map, _| display_map.replace_blocks(blocks));
4550 self.request_autoscroll(Autoscroll::Fit, cx);
4551 }
4552
4553 pub fn remove_blocks(&mut self, block_ids: HashSet<BlockId>, cx: &mut ViewContext<Self>) {
4554 self.display_map.update(cx, |display_map, cx| {
4555 display_map.remove_blocks(block_ids, cx)
4556 });
4557 }
4558
4559 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
4560 self.display_map
4561 .update(cx, |map, cx| map.snapshot(cx))
4562 .longest_row()
4563 }
4564
4565 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
4566 self.display_map
4567 .update(cx, |map, cx| map.snapshot(cx))
4568 .max_point()
4569 }
4570
4571 pub fn text(&self, cx: &AppContext) -> String {
4572 self.buffer.read(cx).read(cx).text()
4573 }
4574
4575 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
4576 self.display_map
4577 .update(cx, |map, cx| map.snapshot(cx))
4578 .text()
4579 }
4580
4581 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
4582 self.display_map
4583 .update(cx, |map, cx| map.set_wrap_width(width, cx))
4584 }
4585
4586 pub fn set_highlighted_rows(&mut self, rows: Option<Range<u32>>) {
4587 self.highlighted_rows = rows;
4588 }
4589
4590 pub fn highlighted_rows(&self) -> Option<Range<u32>> {
4591 self.highlighted_rows.clone()
4592 }
4593
4594 pub fn highlight_ranges<T: 'static>(
4595 &mut self,
4596 ranges: Vec<Range<Anchor>>,
4597 color: Color,
4598 cx: &mut ViewContext<Self>,
4599 ) {
4600 self.highlighted_ranges
4601 .insert(TypeId::of::<T>(), (color, ranges));
4602 cx.notify();
4603 }
4604
4605 pub fn clear_highlighted_ranges<T: 'static>(&mut self, cx: &mut ViewContext<Self>) {
4606 self.highlighted_ranges.remove(&TypeId::of::<T>());
4607 cx.notify();
4608 }
4609
4610 #[cfg(feature = "test-support")]
4611 pub fn all_highlighted_ranges(
4612 &mut self,
4613 cx: &mut ViewContext<Self>,
4614 ) -> Vec<(Range<DisplayPoint>, Color)> {
4615 let snapshot = self.snapshot(cx);
4616 let buffer = &snapshot.buffer_snapshot;
4617 let start = buffer.anchor_before(0);
4618 let end = buffer.anchor_after(buffer.len());
4619 self.highlighted_ranges_in_range(start..end, &snapshot)
4620 }
4621
4622 pub fn highlighted_ranges_for_type<T: 'static>(&self) -> Option<(Color, &[Range<Anchor>])> {
4623 self.highlighted_ranges
4624 .get(&TypeId::of::<T>())
4625 .map(|(color, ranges)| (*color, ranges.as_slice()))
4626 }
4627
4628 pub fn highlighted_ranges_in_range(
4629 &self,
4630 search_range: Range<Anchor>,
4631 display_snapshot: &DisplaySnapshot,
4632 ) -> Vec<(Range<DisplayPoint>, Color)> {
4633 let mut results = Vec::new();
4634 let buffer = &display_snapshot.buffer_snapshot;
4635 for (color, ranges) in self.highlighted_ranges.values() {
4636 let start_ix = match ranges.binary_search_by(|probe| {
4637 let cmp = probe.end.cmp(&search_range.start, &buffer).unwrap();
4638 if cmp.is_gt() {
4639 Ordering::Greater
4640 } else {
4641 Ordering::Less
4642 }
4643 }) {
4644 Ok(i) | Err(i) => i,
4645 };
4646 for range in &ranges[start_ix..] {
4647 if range.start.cmp(&search_range.end, &buffer).unwrap().is_ge() {
4648 break;
4649 }
4650 let start = range
4651 .start
4652 .to_point(buffer)
4653 .to_display_point(display_snapshot);
4654 let end = range
4655 .end
4656 .to_point(buffer)
4657 .to_display_point(display_snapshot);
4658 results.push((start..end, *color))
4659 }
4660 }
4661 results
4662 }
4663
4664 fn next_blink_epoch(&mut self) -> usize {
4665 self.blink_epoch += 1;
4666 self.blink_epoch
4667 }
4668
4669 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
4670 if !self.focused {
4671 return;
4672 }
4673
4674 self.show_local_cursors = true;
4675 cx.notify();
4676
4677 let epoch = self.next_blink_epoch();
4678 cx.spawn(|this, mut cx| {
4679 let this = this.downgrade();
4680 async move {
4681 Timer::after(CURSOR_BLINK_INTERVAL).await;
4682 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
4683 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
4684 }
4685 }
4686 })
4687 .detach();
4688 }
4689
4690 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
4691 if epoch == self.blink_epoch {
4692 self.blinking_paused = false;
4693 self.blink_cursors(epoch, cx);
4694 }
4695 }
4696
4697 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
4698 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
4699 self.show_local_cursors = !self.show_local_cursors;
4700 cx.notify();
4701
4702 let epoch = self.next_blink_epoch();
4703 cx.spawn(|this, mut cx| {
4704 let this = this.downgrade();
4705 async move {
4706 Timer::after(CURSOR_BLINK_INTERVAL).await;
4707 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
4708 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
4709 }
4710 }
4711 })
4712 .detach();
4713 }
4714 }
4715
4716 pub fn show_local_cursors(&self) -> bool {
4717 self.show_local_cursors
4718 }
4719
4720 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
4721 self.refresh_active_diagnostics(cx);
4722 cx.notify();
4723 }
4724
4725 fn on_buffer_event(
4726 &mut self,
4727 _: ModelHandle<MultiBuffer>,
4728 event: &language::Event,
4729 cx: &mut ViewContext<Self>,
4730 ) {
4731 match event {
4732 language::Event::Edited => cx.emit(Event::Edited),
4733 language::Event::Dirtied => cx.emit(Event::Dirtied),
4734 language::Event::Saved => cx.emit(Event::Saved),
4735 language::Event::FileHandleChanged => cx.emit(Event::TitleChanged),
4736 language::Event::Reloaded => cx.emit(Event::TitleChanged),
4737 language::Event::Closed => cx.emit(Event::Closed),
4738 _ => {}
4739 }
4740 }
4741
4742 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
4743 cx.notify();
4744 }
4745}
4746
4747impl EditorSnapshot {
4748 pub fn is_focused(&self) -> bool {
4749 self.is_focused
4750 }
4751
4752 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
4753 self.placeholder_text.as_ref()
4754 }
4755
4756 pub fn scroll_position(&self) -> Vector2F {
4757 compute_scroll_position(
4758 &self.display_snapshot,
4759 self.scroll_position,
4760 &self.scroll_top_anchor,
4761 )
4762 }
4763}
4764
4765impl Deref for EditorSnapshot {
4766 type Target = DisplaySnapshot;
4767
4768 fn deref(&self) -> &Self::Target {
4769 &self.display_snapshot
4770 }
4771}
4772
4773impl EditorSettings {
4774 #[cfg(any(test, feature = "test-support"))]
4775 pub fn test(cx: &AppContext) -> Self {
4776 use theme::{ContainedLabel, ContainedText, DiagnosticHeader, DiagnosticPathHeader};
4777
4778 Self {
4779 tab_size: 4,
4780 soft_wrap: SoftWrap::None,
4781 style: {
4782 let font_cache: &gpui::FontCache = cx.font_cache();
4783 let font_family_name = Arc::from("Monaco");
4784 let font_properties = Default::default();
4785 let font_family_id = font_cache.load_family(&[&font_family_name]).unwrap();
4786 let font_id = font_cache
4787 .select_font(font_family_id, &font_properties)
4788 .unwrap();
4789 let text = gpui::fonts::TextStyle {
4790 font_family_name,
4791 font_family_id,
4792 font_id,
4793 font_size: 14.,
4794 color: gpui::color::Color::from_u32(0xff0000ff),
4795 font_properties,
4796 underline: None,
4797 };
4798 let default_diagnostic_style = DiagnosticStyle {
4799 message: text.clone().into(),
4800 header: Default::default(),
4801 text_scale_factor: 1.,
4802 };
4803 EditorStyle {
4804 text: text.clone(),
4805 placeholder_text: None,
4806 background: Default::default(),
4807 gutter_background: Default::default(),
4808 gutter_padding_factor: 2.,
4809 active_line_background: Default::default(),
4810 highlighted_line_background: Default::default(),
4811 line_number: Default::default(),
4812 line_number_active: Default::default(),
4813 selection: Default::default(),
4814 guest_selections: Default::default(),
4815 syntax: Default::default(),
4816 diagnostic_path_header: DiagnosticPathHeader {
4817 container: Default::default(),
4818 filename: ContainedText {
4819 container: Default::default(),
4820 text: text.clone(),
4821 },
4822 path: ContainedText {
4823 container: Default::default(),
4824 text: text.clone(),
4825 },
4826 text_scale_factor: 1.,
4827 },
4828 diagnostic_header: DiagnosticHeader {
4829 container: Default::default(),
4830 message: ContainedLabel {
4831 container: Default::default(),
4832 label: text.clone().into(),
4833 },
4834 code: ContainedText {
4835 container: Default::default(),
4836 text: text.clone(),
4837 },
4838 icon_width_factor: 1.,
4839 text_scale_factor: 1.,
4840 },
4841 error_diagnostic: default_diagnostic_style.clone(),
4842 invalid_error_diagnostic: default_diagnostic_style.clone(),
4843 warning_diagnostic: default_diagnostic_style.clone(),
4844 invalid_warning_diagnostic: default_diagnostic_style.clone(),
4845 information_diagnostic: default_diagnostic_style.clone(),
4846 invalid_information_diagnostic: default_diagnostic_style.clone(),
4847 hint_diagnostic: default_diagnostic_style.clone(),
4848 invalid_hint_diagnostic: default_diagnostic_style.clone(),
4849 autocomplete: Default::default(),
4850 }
4851 },
4852 }
4853 }
4854}
4855
4856fn compute_scroll_position(
4857 snapshot: &DisplaySnapshot,
4858 mut scroll_position: Vector2F,
4859 scroll_top_anchor: &Option<Anchor>,
4860) -> Vector2F {
4861 if let Some(anchor) = scroll_top_anchor {
4862 let scroll_top = anchor.to_display_point(snapshot).row() as f32;
4863 scroll_position.set_y(scroll_top + scroll_position.y());
4864 } else {
4865 scroll_position.set_y(0.);
4866 }
4867 scroll_position
4868}
4869
4870#[derive(Copy, Clone)]
4871pub enum Event {
4872 Activate,
4873 Edited,
4874 Blurred,
4875 Dirtied,
4876 Saved,
4877 TitleChanged,
4878 SelectionsChanged,
4879 Closed,
4880}
4881
4882impl Entity for Editor {
4883 type Event = Event;
4884}
4885
4886impl View for Editor {
4887 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
4888 let settings = (self.build_settings)(cx);
4889 self.display_map.update(cx, |map, cx| {
4890 map.set_font(
4891 settings.style.text.font_id,
4892 settings.style.text.font_size,
4893 cx,
4894 )
4895 });
4896 EditorElement::new(self.handle.clone(), settings).boxed()
4897 }
4898
4899 fn ui_name() -> &'static str {
4900 "Editor"
4901 }
4902
4903 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
4904 self.focused = true;
4905 self.blink_cursors(self.blink_epoch, cx);
4906 self.buffer.update(cx, |buffer, cx| {
4907 buffer.finalize_last_transaction(cx);
4908 buffer.set_active_selections(&self.selections, cx)
4909 });
4910 }
4911
4912 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
4913 self.focused = false;
4914 self.show_local_cursors = false;
4915 self.buffer
4916 .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
4917 self.hide_context_menu(cx);
4918 cx.emit(Event::Blurred);
4919 cx.notify();
4920 }
4921
4922 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
4923 let mut cx = Self::default_keymap_context();
4924 let mode = match self.mode {
4925 EditorMode::SingleLine => "single_line",
4926 EditorMode::AutoHeight { .. } => "auto_height",
4927 EditorMode::Full => "full",
4928 };
4929 cx.map.insert("mode".into(), mode.into());
4930 match self.context_menu.as_ref() {
4931 Some(ContextMenu::Completions(_)) => {
4932 cx.set.insert("showing_completions".into());
4933 }
4934 Some(ContextMenu::CodeActions(_)) => {
4935 cx.set.insert("showing_code_actions".into());
4936 }
4937 None => {}
4938 }
4939 cx
4940 }
4941}
4942
4943impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
4944 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
4945 let start = self.start.to_point(buffer);
4946 let end = self.end.to_point(buffer);
4947 if self.reversed {
4948 end..start
4949 } else {
4950 start..end
4951 }
4952 }
4953
4954 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
4955 let start = self.start.to_offset(buffer);
4956 let end = self.end.to_offset(buffer);
4957 if self.reversed {
4958 end..start
4959 } else {
4960 start..end
4961 }
4962 }
4963
4964 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
4965 let start = self
4966 .start
4967 .to_point(&map.buffer_snapshot)
4968 .to_display_point(map);
4969 let end = self
4970 .end
4971 .to_point(&map.buffer_snapshot)
4972 .to_display_point(map);
4973 if self.reversed {
4974 end..start
4975 } else {
4976 start..end
4977 }
4978 }
4979
4980 fn spanned_rows(
4981 &self,
4982 include_end_if_at_line_start: bool,
4983 map: &DisplaySnapshot,
4984 ) -> Range<u32> {
4985 let start = self.start.to_point(&map.buffer_snapshot);
4986 let mut end = self.end.to_point(&map.buffer_snapshot);
4987 if !include_end_if_at_line_start && start.row != end.row && end.column == 0 {
4988 end.row -= 1;
4989 }
4990
4991 let buffer_start = map.prev_line_boundary(start).0;
4992 let buffer_end = map.next_line_boundary(end).0;
4993 buffer_start.row..buffer_end.row + 1
4994 }
4995}
4996
4997impl<T: InvalidationRegion> InvalidationStack<T> {
4998 fn invalidate<S>(&mut self, selections: &[Selection<S>], buffer: &MultiBufferSnapshot)
4999 where
5000 S: Clone + ToOffset,
5001 {
5002 while let Some(region) = self.last() {
5003 let all_selections_inside_invalidation_ranges =
5004 if selections.len() == region.ranges().len() {
5005 selections
5006 .iter()
5007 .zip(region.ranges().iter().map(|r| r.to_offset(&buffer)))
5008 .all(|(selection, invalidation_range)| {
5009 let head = selection.head().to_offset(&buffer);
5010 invalidation_range.start <= head && invalidation_range.end >= head
5011 })
5012 } else {
5013 false
5014 };
5015
5016 if all_selections_inside_invalidation_ranges {
5017 break;
5018 } else {
5019 self.pop();
5020 }
5021 }
5022 }
5023}
5024
5025impl<T> Default for InvalidationStack<T> {
5026 fn default() -> Self {
5027 Self(Default::default())
5028 }
5029}
5030
5031impl<T> Deref for InvalidationStack<T> {
5032 type Target = Vec<T>;
5033
5034 fn deref(&self) -> &Self::Target {
5035 &self.0
5036 }
5037}
5038
5039impl<T> DerefMut for InvalidationStack<T> {
5040 fn deref_mut(&mut self) -> &mut Self::Target {
5041 &mut self.0
5042 }
5043}
5044
5045impl InvalidationRegion for BracketPairState {
5046 fn ranges(&self) -> &[Range<Anchor>] {
5047 &self.ranges
5048 }
5049}
5050
5051impl InvalidationRegion for SnippetState {
5052 fn ranges(&self) -> &[Range<Anchor>] {
5053 &self.ranges[self.active_index]
5054 }
5055}
5056
5057pub fn diagnostic_block_renderer(
5058 diagnostic: Diagnostic,
5059 is_valid: bool,
5060 build_settings: BuildSettings,
5061) -> RenderBlock {
5062 let mut highlighted_lines = Vec::new();
5063 for line in diagnostic.message.lines() {
5064 highlighted_lines.push(highlight_diagnostic_message(line));
5065 }
5066
5067 Arc::new(move |cx: &BlockContext| {
5068 let settings = build_settings(cx);
5069 let style = diagnostic_style(diagnostic.severity, is_valid, &settings.style);
5070 let font_size = (style.text_scale_factor * settings.style.text.font_size).round();
5071 Flex::column()
5072 .with_children(highlighted_lines.iter().map(|(line, highlights)| {
5073 Label::new(
5074 line.clone(),
5075 style.message.clone().with_font_size(font_size),
5076 )
5077 .with_highlights(highlights.clone())
5078 .contained()
5079 .with_margin_left(cx.anchor_x)
5080 .boxed()
5081 }))
5082 .aligned()
5083 .left()
5084 .boxed()
5085 })
5086}
5087
5088pub fn highlight_diagnostic_message(message: &str) -> (String, Vec<usize>) {
5089 let mut message_without_backticks = String::new();
5090 let mut prev_offset = 0;
5091 let mut inside_block = false;
5092 let mut highlights = Vec::new();
5093 for (match_ix, (offset, _)) in message
5094 .match_indices('`')
5095 .chain([(message.len(), "")])
5096 .enumerate()
5097 {
5098 message_without_backticks.push_str(&message[prev_offset..offset]);
5099 if inside_block {
5100 highlights.extend(prev_offset - match_ix..offset - match_ix);
5101 }
5102
5103 inside_block = !inside_block;
5104 prev_offset = offset + 1;
5105 }
5106
5107 (message_without_backticks, highlights)
5108}
5109
5110pub fn diagnostic_style(
5111 severity: DiagnosticSeverity,
5112 valid: bool,
5113 style: &EditorStyle,
5114) -> DiagnosticStyle {
5115 match (severity, valid) {
5116 (DiagnosticSeverity::ERROR, true) => style.error_diagnostic.clone(),
5117 (DiagnosticSeverity::ERROR, false) => style.invalid_error_diagnostic.clone(),
5118 (DiagnosticSeverity::WARNING, true) => style.warning_diagnostic.clone(),
5119 (DiagnosticSeverity::WARNING, false) => style.invalid_warning_diagnostic.clone(),
5120 (DiagnosticSeverity::INFORMATION, true) => style.information_diagnostic.clone(),
5121 (DiagnosticSeverity::INFORMATION, false) => style.invalid_information_diagnostic.clone(),
5122 (DiagnosticSeverity::HINT, true) => style.hint_diagnostic.clone(),
5123 (DiagnosticSeverity::HINT, false) => style.invalid_hint_diagnostic.clone(),
5124 _ => DiagnosticStyle {
5125 message: style.text.clone().into(),
5126 header: Default::default(),
5127 text_scale_factor: 1.,
5128 },
5129 }
5130}
5131
5132pub fn settings_builder(
5133 buffer: WeakModelHandle<MultiBuffer>,
5134 settings: watch::Receiver<workspace::Settings>,
5135) -> BuildSettings {
5136 Arc::new(move |cx| {
5137 let settings = settings.borrow();
5138 let font_cache = cx.font_cache();
5139 let font_family_id = settings.buffer_font_family;
5140 let font_family_name = cx.font_cache().family_name(font_family_id).unwrap();
5141 let font_properties = Default::default();
5142 let font_id = font_cache
5143 .select_font(font_family_id, &font_properties)
5144 .unwrap();
5145 let font_size = settings.buffer_font_size;
5146
5147 let mut theme = settings.theme.editor.clone();
5148 theme.text = TextStyle {
5149 color: theme.text.color,
5150 font_family_name,
5151 font_family_id,
5152 font_id,
5153 font_size,
5154 font_properties,
5155 underline: None,
5156 };
5157 let language = buffer.upgrade(cx).and_then(|buf| buf.read(cx).language(cx));
5158 let soft_wrap = match settings.soft_wrap(language) {
5159 workspace::settings::SoftWrap::None => SoftWrap::None,
5160 workspace::settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
5161 workspace::settings::SoftWrap::PreferredLineLength => {
5162 SoftWrap::Column(settings.preferred_line_length(language).saturating_sub(1))
5163 }
5164 };
5165
5166 EditorSettings {
5167 tab_size: settings.tab_size,
5168 soft_wrap,
5169 style: theme,
5170 }
5171 })
5172}
5173
5174pub fn combine_syntax_and_fuzzy_match_highlights(
5175 text: &str,
5176 default_style: HighlightStyle,
5177 syntax_ranges: impl Iterator<Item = (Range<usize>, HighlightStyle)>,
5178 match_indices: &[usize],
5179) -> Vec<(Range<usize>, HighlightStyle)> {
5180 let mut result = Vec::new();
5181 let mut match_indices = match_indices.iter().copied().peekable();
5182
5183 for (range, mut syntax_highlight) in syntax_ranges.chain([(usize::MAX..0, Default::default())])
5184 {
5185 syntax_highlight.font_properties.weight(Default::default());
5186
5187 // Add highlights for any fuzzy match characters before the next
5188 // syntax highlight range.
5189 while let Some(&match_index) = match_indices.peek() {
5190 if match_index >= range.start {
5191 break;
5192 }
5193 match_indices.next();
5194 let end_index = char_ix_after(match_index, text);
5195 let mut match_style = default_style;
5196 match_style.font_properties.weight(fonts::Weight::BOLD);
5197 result.push((match_index..end_index, match_style));
5198 }
5199
5200 if range.start == usize::MAX {
5201 break;
5202 }
5203
5204 // Add highlights for any fuzzy match characters within the
5205 // syntax highlight range.
5206 let mut offset = range.start;
5207 while let Some(&match_index) = match_indices.peek() {
5208 if match_index >= range.end {
5209 break;
5210 }
5211
5212 match_indices.next();
5213 if match_index > offset {
5214 result.push((offset..match_index, syntax_highlight));
5215 }
5216
5217 let mut end_index = char_ix_after(match_index, text);
5218 while let Some(&next_match_index) = match_indices.peek() {
5219 if next_match_index == end_index && next_match_index < range.end {
5220 end_index = char_ix_after(next_match_index, text);
5221 match_indices.next();
5222 } else {
5223 break;
5224 }
5225 }
5226
5227 let mut match_style = syntax_highlight;
5228 match_style.font_properties.weight(fonts::Weight::BOLD);
5229 result.push((match_index..end_index, match_style));
5230 offset = end_index;
5231 }
5232
5233 if offset < range.end {
5234 result.push((offset..range.end, syntax_highlight));
5235 }
5236 }
5237
5238 fn char_ix_after(ix: usize, text: &str) -> usize {
5239 ix + text[ix..].chars().next().unwrap().len_utf8()
5240 }
5241
5242 result
5243}
5244
5245fn styled_runs_for_completion_label<'a>(
5246 label: &'a CompletionLabel,
5247 default_color: Color,
5248 syntax_theme: &'a theme::SyntaxTheme,
5249) -> impl 'a + Iterator<Item = (Range<usize>, HighlightStyle)> {
5250 const MUTED_OPACITY: usize = 165;
5251
5252 let mut muted_default_style = HighlightStyle {
5253 color: default_color,
5254 ..Default::default()
5255 };
5256 muted_default_style.color.a = ((default_color.a as usize * MUTED_OPACITY) / 255) as u8;
5257
5258 let mut prev_end = label.filter_range.end;
5259 label
5260 .runs
5261 .iter()
5262 .enumerate()
5263 .flat_map(move |(ix, (range, highlight_id))| {
5264 let style = if let Some(style) = highlight_id.style(syntax_theme) {
5265 style
5266 } else {
5267 return Default::default();
5268 };
5269 let mut muted_style = style.clone();
5270 muted_style.color.a = ((style.color.a as usize * MUTED_OPACITY) / 255) as u8;
5271
5272 let mut runs = SmallVec::<[(Range<usize>, HighlightStyle); 3]>::new();
5273 if range.start >= label.filter_range.end {
5274 if range.start > prev_end {
5275 runs.push((prev_end..range.start, muted_default_style));
5276 }
5277 runs.push((range.clone(), muted_style));
5278 } else if range.end <= label.filter_range.end {
5279 runs.push((range.clone(), style));
5280 } else {
5281 runs.push((range.start..label.filter_range.end, style));
5282 runs.push((label.filter_range.end..range.end, muted_style));
5283 }
5284 prev_end = cmp::max(prev_end, range.end);
5285
5286 if ix + 1 == label.runs.len() && label.text.len() > prev_end {
5287 runs.push((prev_end..label.text.len(), muted_default_style));
5288 }
5289
5290 runs
5291 })
5292}
5293
5294#[cfg(test)]
5295mod tests {
5296 use super::*;
5297 use language::LanguageConfig;
5298 use lsp::FakeLanguageServer;
5299 use project::{FakeFs, ProjectPath};
5300 use std::{cell::RefCell, rc::Rc, time::Instant};
5301 use text::Point;
5302 use unindent::Unindent;
5303 use util::test::sample_text;
5304
5305 #[gpui::test]
5306 fn test_undo_redo_with_selection_restoration(cx: &mut MutableAppContext) {
5307 let mut now = Instant::now();
5308 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
5309 let group_interval = buffer.read(cx).transaction_group_interval();
5310 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5311 let settings = EditorSettings::test(cx);
5312 let (_, editor) = cx.add_window(Default::default(), |cx| {
5313 build_editor(buffer.clone(), settings, cx)
5314 });
5315
5316 editor.update(cx, |editor, cx| {
5317 editor.start_transaction_at(now, cx);
5318 editor.select_ranges([2..4], None, cx);
5319 editor.insert("cd", cx);
5320 editor.end_transaction_at(now, cx);
5321 assert_eq!(editor.text(cx), "12cd56");
5322 assert_eq!(editor.selected_ranges(cx), vec![4..4]);
5323
5324 editor.start_transaction_at(now, cx);
5325 editor.select_ranges([4..5], None, cx);
5326 editor.insert("e", cx);
5327 editor.end_transaction_at(now, cx);
5328 assert_eq!(editor.text(cx), "12cde6");
5329 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
5330
5331 now += group_interval + Duration::from_millis(1);
5332 editor.select_ranges([2..2], None, cx);
5333
5334 // Simulate an edit in another editor
5335 buffer.update(cx, |buffer, cx| {
5336 buffer.start_transaction_at(now, cx);
5337 buffer.edit([0..1], "a", cx);
5338 buffer.edit([1..1], "b", cx);
5339 buffer.end_transaction_at(now, cx);
5340 });
5341
5342 assert_eq!(editor.text(cx), "ab2cde6");
5343 assert_eq!(editor.selected_ranges(cx), vec![3..3]);
5344
5345 // Last transaction happened past the group interval in a different editor.
5346 // Undo it individually and don't restore selections.
5347 editor.undo(&Undo, cx);
5348 assert_eq!(editor.text(cx), "12cde6");
5349 assert_eq!(editor.selected_ranges(cx), vec![2..2]);
5350
5351 // First two transactions happened within the group interval in this editor.
5352 // Undo them together and restore selections.
5353 editor.undo(&Undo, cx);
5354 editor.undo(&Undo, cx); // Undo stack is empty here, so this is a no-op.
5355 assert_eq!(editor.text(cx), "123456");
5356 assert_eq!(editor.selected_ranges(cx), vec![0..0]);
5357
5358 // Redo the first two transactions together.
5359 editor.redo(&Redo, cx);
5360 assert_eq!(editor.text(cx), "12cde6");
5361 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
5362
5363 // Redo the last transaction on its own.
5364 editor.redo(&Redo, cx);
5365 assert_eq!(editor.text(cx), "ab2cde6");
5366 assert_eq!(editor.selected_ranges(cx), vec![6..6]);
5367
5368 // Test empty transactions.
5369 editor.start_transaction_at(now, cx);
5370 editor.end_transaction_at(now, cx);
5371 editor.undo(&Undo, cx);
5372 assert_eq!(editor.text(cx), "12cde6");
5373 });
5374 }
5375
5376 #[gpui::test]
5377 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
5378 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
5379 let settings = EditorSettings::test(cx);
5380 let (_, editor) =
5381 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5382
5383 editor.update(cx, |view, cx| {
5384 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
5385 });
5386
5387 assert_eq!(
5388 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5389 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
5390 );
5391
5392 editor.update(cx, |view, cx| {
5393 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
5394 });
5395
5396 assert_eq!(
5397 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5398 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
5399 );
5400
5401 editor.update(cx, |view, cx| {
5402 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
5403 });
5404
5405 assert_eq!(
5406 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5407 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
5408 );
5409
5410 editor.update(cx, |view, cx| {
5411 view.end_selection(cx);
5412 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
5413 });
5414
5415 assert_eq!(
5416 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5417 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
5418 );
5419
5420 editor.update(cx, |view, cx| {
5421 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
5422 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
5423 });
5424
5425 assert_eq!(
5426 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5427 [
5428 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
5429 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
5430 ]
5431 );
5432
5433 editor.update(cx, |view, cx| {
5434 view.end_selection(cx);
5435 });
5436
5437 assert_eq!(
5438 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5439 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
5440 );
5441 }
5442
5443 #[gpui::test]
5444 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
5445 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
5446 let settings = EditorSettings::test(cx);
5447 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5448
5449 view.update(cx, |view, cx| {
5450 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
5451 assert_eq!(
5452 view.selected_display_ranges(cx),
5453 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
5454 );
5455 });
5456
5457 view.update(cx, |view, cx| {
5458 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
5459 assert_eq!(
5460 view.selected_display_ranges(cx),
5461 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
5462 );
5463 });
5464
5465 view.update(cx, |view, cx| {
5466 view.cancel(&Cancel, cx);
5467 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
5468 assert_eq!(
5469 view.selected_display_ranges(cx),
5470 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
5471 );
5472 });
5473 }
5474
5475 #[gpui::test]
5476 fn test_navigation_history(cx: &mut gpui::MutableAppContext) {
5477 cx.add_window(Default::default(), |cx| {
5478 use workspace::ItemView;
5479 let nav_history = Rc::new(RefCell::new(workspace::NavHistory::default()));
5480 let settings = EditorSettings::test(&cx);
5481 let buffer = MultiBuffer::build_simple(&sample_text(30, 5, 'a'), cx);
5482 let mut editor = build_editor(buffer.clone(), settings, cx);
5483 editor.nav_history = Some(ItemNavHistory::new(nav_history.clone(), &cx.handle()));
5484
5485 // Move the cursor a small distance.
5486 // Nothing is added to the navigation history.
5487 editor.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
5488 editor.select_display_ranges(&[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)], cx);
5489 assert!(nav_history.borrow_mut().pop_backward().is_none());
5490
5491 // Move the cursor a large distance.
5492 // The history can jump back to the previous position.
5493 editor.select_display_ranges(&[DisplayPoint::new(13, 0)..DisplayPoint::new(13, 3)], cx);
5494 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
5495 editor.navigate(nav_entry.data.unwrap(), cx);
5496 assert_eq!(nav_entry.item_view.id(), cx.view_id());
5497 assert_eq!(
5498 editor.selected_display_ranges(cx),
5499 &[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)]
5500 );
5501
5502 // Move the cursor a small distance via the mouse.
5503 // Nothing is added to the navigation history.
5504 editor.begin_selection(DisplayPoint::new(5, 0), false, 1, cx);
5505 editor.end_selection(cx);
5506 assert_eq!(
5507 editor.selected_display_ranges(cx),
5508 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
5509 );
5510 assert!(nav_history.borrow_mut().pop_backward().is_none());
5511
5512 // Move the cursor a large distance via the mouse.
5513 // The history can jump back to the previous position.
5514 editor.begin_selection(DisplayPoint::new(15, 0), false, 1, cx);
5515 editor.end_selection(cx);
5516 assert_eq!(
5517 editor.selected_display_ranges(cx),
5518 &[DisplayPoint::new(15, 0)..DisplayPoint::new(15, 0)]
5519 );
5520 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
5521 editor.navigate(nav_entry.data.unwrap(), cx);
5522 assert_eq!(nav_entry.item_view.id(), cx.view_id());
5523 assert_eq!(
5524 editor.selected_display_ranges(cx),
5525 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
5526 );
5527
5528 editor
5529 });
5530 }
5531
5532 #[gpui::test]
5533 fn test_cancel(cx: &mut gpui::MutableAppContext) {
5534 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
5535 let settings = EditorSettings::test(cx);
5536 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5537
5538 view.update(cx, |view, cx| {
5539 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
5540 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
5541 view.end_selection(cx);
5542
5543 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
5544 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
5545 view.end_selection(cx);
5546 assert_eq!(
5547 view.selected_display_ranges(cx),
5548 [
5549 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5550 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
5551 ]
5552 );
5553 });
5554
5555 view.update(cx, |view, cx| {
5556 view.cancel(&Cancel, cx);
5557 assert_eq!(
5558 view.selected_display_ranges(cx),
5559 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
5560 );
5561 });
5562
5563 view.update(cx, |view, cx| {
5564 view.cancel(&Cancel, cx);
5565 assert_eq!(
5566 view.selected_display_ranges(cx),
5567 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
5568 );
5569 });
5570 }
5571
5572 #[gpui::test]
5573 fn test_fold(cx: &mut gpui::MutableAppContext) {
5574 let buffer = MultiBuffer::build_simple(
5575 &"
5576 impl Foo {
5577 // Hello!
5578
5579 fn a() {
5580 1
5581 }
5582
5583 fn b() {
5584 2
5585 }
5586
5587 fn c() {
5588 3
5589 }
5590 }
5591 "
5592 .unindent(),
5593 cx,
5594 );
5595 let settings = EditorSettings::test(&cx);
5596 let (_, view) = cx.add_window(Default::default(), |cx| {
5597 build_editor(buffer.clone(), settings, cx)
5598 });
5599
5600 view.update(cx, |view, cx| {
5601 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx);
5602 view.fold(&Fold, cx);
5603 assert_eq!(
5604 view.display_text(cx),
5605 "
5606 impl Foo {
5607 // Hello!
5608
5609 fn a() {
5610 1
5611 }
5612
5613 fn b() {…
5614 }
5615
5616 fn c() {…
5617 }
5618 }
5619 "
5620 .unindent(),
5621 );
5622
5623 view.fold(&Fold, cx);
5624 assert_eq!(
5625 view.display_text(cx),
5626 "
5627 impl Foo {…
5628 }
5629 "
5630 .unindent(),
5631 );
5632
5633 view.unfold(&Unfold, cx);
5634 assert_eq!(
5635 view.display_text(cx),
5636 "
5637 impl Foo {
5638 // Hello!
5639
5640 fn a() {
5641 1
5642 }
5643
5644 fn b() {…
5645 }
5646
5647 fn c() {…
5648 }
5649 }
5650 "
5651 .unindent(),
5652 );
5653
5654 view.unfold(&Unfold, cx);
5655 assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text());
5656 });
5657 }
5658
5659 #[gpui::test]
5660 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
5661 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
5662 let settings = EditorSettings::test(&cx);
5663 let (_, view) = cx.add_window(Default::default(), |cx| {
5664 build_editor(buffer.clone(), settings, cx)
5665 });
5666
5667 buffer.update(cx, |buffer, cx| {
5668 buffer.edit(
5669 vec![
5670 Point::new(1, 0)..Point::new(1, 0),
5671 Point::new(1, 1)..Point::new(1, 1),
5672 ],
5673 "\t",
5674 cx,
5675 );
5676 });
5677
5678 view.update(cx, |view, cx| {
5679 assert_eq!(
5680 view.selected_display_ranges(cx),
5681 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
5682 );
5683
5684 view.move_down(&MoveDown, cx);
5685 assert_eq!(
5686 view.selected_display_ranges(cx),
5687 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
5688 );
5689
5690 view.move_right(&MoveRight, cx);
5691 assert_eq!(
5692 view.selected_display_ranges(cx),
5693 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
5694 );
5695
5696 view.move_left(&MoveLeft, cx);
5697 assert_eq!(
5698 view.selected_display_ranges(cx),
5699 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
5700 );
5701
5702 view.move_up(&MoveUp, cx);
5703 assert_eq!(
5704 view.selected_display_ranges(cx),
5705 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
5706 );
5707
5708 view.move_to_end(&MoveToEnd, cx);
5709 assert_eq!(
5710 view.selected_display_ranges(cx),
5711 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
5712 );
5713
5714 view.move_to_beginning(&MoveToBeginning, cx);
5715 assert_eq!(
5716 view.selected_display_ranges(cx),
5717 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
5718 );
5719
5720 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx);
5721 view.select_to_beginning(&SelectToBeginning, cx);
5722 assert_eq!(
5723 view.selected_display_ranges(cx),
5724 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
5725 );
5726
5727 view.select_to_end(&SelectToEnd, cx);
5728 assert_eq!(
5729 view.selected_display_ranges(cx),
5730 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
5731 );
5732 });
5733 }
5734
5735 #[gpui::test]
5736 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
5737 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
5738 let settings = EditorSettings::test(&cx);
5739 let (_, view) = cx.add_window(Default::default(), |cx| {
5740 build_editor(buffer.clone(), settings, cx)
5741 });
5742
5743 assert_eq!('ⓐ'.len_utf8(), 3);
5744 assert_eq!('α'.len_utf8(), 2);
5745
5746 view.update(cx, |view, cx| {
5747 view.fold_ranges(
5748 vec![
5749 Point::new(0, 6)..Point::new(0, 12),
5750 Point::new(1, 2)..Point::new(1, 4),
5751 Point::new(2, 4)..Point::new(2, 8),
5752 ],
5753 cx,
5754 );
5755 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
5756
5757 view.move_right(&MoveRight, cx);
5758 assert_eq!(
5759 view.selected_display_ranges(cx),
5760 &[empty_range(0, "ⓐ".len())]
5761 );
5762 view.move_right(&MoveRight, cx);
5763 assert_eq!(
5764 view.selected_display_ranges(cx),
5765 &[empty_range(0, "ⓐⓑ".len())]
5766 );
5767 view.move_right(&MoveRight, cx);
5768 assert_eq!(
5769 view.selected_display_ranges(cx),
5770 &[empty_range(0, "ⓐⓑ…".len())]
5771 );
5772
5773 view.move_down(&MoveDown, cx);
5774 assert_eq!(
5775 view.selected_display_ranges(cx),
5776 &[empty_range(1, "ab…".len())]
5777 );
5778 view.move_left(&MoveLeft, cx);
5779 assert_eq!(
5780 view.selected_display_ranges(cx),
5781 &[empty_range(1, "ab".len())]
5782 );
5783 view.move_left(&MoveLeft, cx);
5784 assert_eq!(
5785 view.selected_display_ranges(cx),
5786 &[empty_range(1, "a".len())]
5787 );
5788
5789 view.move_down(&MoveDown, cx);
5790 assert_eq!(
5791 view.selected_display_ranges(cx),
5792 &[empty_range(2, "α".len())]
5793 );
5794 view.move_right(&MoveRight, cx);
5795 assert_eq!(
5796 view.selected_display_ranges(cx),
5797 &[empty_range(2, "αβ".len())]
5798 );
5799 view.move_right(&MoveRight, cx);
5800 assert_eq!(
5801 view.selected_display_ranges(cx),
5802 &[empty_range(2, "αβ…".len())]
5803 );
5804 view.move_right(&MoveRight, cx);
5805 assert_eq!(
5806 view.selected_display_ranges(cx),
5807 &[empty_range(2, "αβ…ε".len())]
5808 );
5809
5810 view.move_up(&MoveUp, cx);
5811 assert_eq!(
5812 view.selected_display_ranges(cx),
5813 &[empty_range(1, "ab…e".len())]
5814 );
5815 view.move_up(&MoveUp, cx);
5816 assert_eq!(
5817 view.selected_display_ranges(cx),
5818 &[empty_range(0, "ⓐⓑ…ⓔ".len())]
5819 );
5820 view.move_left(&MoveLeft, cx);
5821 assert_eq!(
5822 view.selected_display_ranges(cx),
5823 &[empty_range(0, "ⓐⓑ…".len())]
5824 );
5825 view.move_left(&MoveLeft, cx);
5826 assert_eq!(
5827 view.selected_display_ranges(cx),
5828 &[empty_range(0, "ⓐⓑ".len())]
5829 );
5830 view.move_left(&MoveLeft, cx);
5831 assert_eq!(
5832 view.selected_display_ranges(cx),
5833 &[empty_range(0, "ⓐ".len())]
5834 );
5835 });
5836 }
5837
5838 #[gpui::test]
5839 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
5840 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
5841 let settings = EditorSettings::test(&cx);
5842 let (_, view) = cx.add_window(Default::default(), |cx| {
5843 build_editor(buffer.clone(), settings, cx)
5844 });
5845 view.update(cx, |view, cx| {
5846 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx);
5847 view.move_down(&MoveDown, cx);
5848 assert_eq!(
5849 view.selected_display_ranges(cx),
5850 &[empty_range(1, "abcd".len())]
5851 );
5852
5853 view.move_down(&MoveDown, cx);
5854 assert_eq!(
5855 view.selected_display_ranges(cx),
5856 &[empty_range(2, "αβγ".len())]
5857 );
5858
5859 view.move_down(&MoveDown, cx);
5860 assert_eq!(
5861 view.selected_display_ranges(cx),
5862 &[empty_range(3, "abcd".len())]
5863 );
5864
5865 view.move_down(&MoveDown, cx);
5866 assert_eq!(
5867 view.selected_display_ranges(cx),
5868 &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
5869 );
5870
5871 view.move_up(&MoveUp, cx);
5872 assert_eq!(
5873 view.selected_display_ranges(cx),
5874 &[empty_range(3, "abcd".len())]
5875 );
5876
5877 view.move_up(&MoveUp, cx);
5878 assert_eq!(
5879 view.selected_display_ranges(cx),
5880 &[empty_range(2, "αβγ".len())]
5881 );
5882 });
5883 }
5884
5885 #[gpui::test]
5886 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
5887 let buffer = MultiBuffer::build_simple("abc\n def", cx);
5888 let settings = EditorSettings::test(&cx);
5889 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5890 view.update(cx, |view, cx| {
5891 view.select_display_ranges(
5892 &[
5893 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5894 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
5895 ],
5896 cx,
5897 );
5898 });
5899
5900 view.update(cx, |view, cx| {
5901 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
5902 assert_eq!(
5903 view.selected_display_ranges(cx),
5904 &[
5905 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5906 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5907 ]
5908 );
5909 });
5910
5911 view.update(cx, |view, cx| {
5912 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
5913 assert_eq!(
5914 view.selected_display_ranges(cx),
5915 &[
5916 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5917 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5918 ]
5919 );
5920 });
5921
5922 view.update(cx, |view, cx| {
5923 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
5924 assert_eq!(
5925 view.selected_display_ranges(cx),
5926 &[
5927 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5928 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5929 ]
5930 );
5931 });
5932
5933 view.update(cx, |view, cx| {
5934 view.move_to_end_of_line(&MoveToEndOfLine, cx);
5935 assert_eq!(
5936 view.selected_display_ranges(cx),
5937 &[
5938 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5939 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
5940 ]
5941 );
5942 });
5943
5944 // Moving to the end of line again is a no-op.
5945 view.update(cx, |view, cx| {
5946 view.move_to_end_of_line(&MoveToEndOfLine, cx);
5947 assert_eq!(
5948 view.selected_display_ranges(cx),
5949 &[
5950 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5951 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
5952 ]
5953 );
5954 });
5955
5956 view.update(cx, |view, cx| {
5957 view.move_left(&MoveLeft, cx);
5958 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
5959 assert_eq!(
5960 view.selected_display_ranges(cx),
5961 &[
5962 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
5963 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
5964 ]
5965 );
5966 });
5967
5968 view.update(cx, |view, cx| {
5969 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
5970 assert_eq!(
5971 view.selected_display_ranges(cx),
5972 &[
5973 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
5974 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
5975 ]
5976 );
5977 });
5978
5979 view.update(cx, |view, cx| {
5980 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
5981 assert_eq!(
5982 view.selected_display_ranges(cx),
5983 &[
5984 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
5985 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
5986 ]
5987 );
5988 });
5989
5990 view.update(cx, |view, cx| {
5991 view.select_to_end_of_line(&SelectToEndOfLine(true), cx);
5992 assert_eq!(
5993 view.selected_display_ranges(cx),
5994 &[
5995 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
5996 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
5997 ]
5998 );
5999 });
6000
6001 view.update(cx, |view, cx| {
6002 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
6003 assert_eq!(view.display_text(cx), "ab\n de");
6004 assert_eq!(
6005 view.selected_display_ranges(cx),
6006 &[
6007 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6008 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
6009 ]
6010 );
6011 });
6012
6013 view.update(cx, |view, cx| {
6014 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
6015 assert_eq!(view.display_text(cx), "\n");
6016 assert_eq!(
6017 view.selected_display_ranges(cx),
6018 &[
6019 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6020 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6021 ]
6022 );
6023 });
6024 }
6025
6026 #[gpui::test]
6027 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
6028 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
6029 let settings = EditorSettings::test(&cx);
6030 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6031 view.update(cx, |view, cx| {
6032 view.select_display_ranges(
6033 &[
6034 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
6035 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
6036 ],
6037 cx,
6038 );
6039 });
6040
6041 view.update(cx, |view, cx| {
6042 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6043 assert_eq!(
6044 view.selected_display_ranges(cx),
6045 &[
6046 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
6047 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
6048 ]
6049 );
6050 });
6051
6052 view.update(cx, |view, cx| {
6053 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6054 assert_eq!(
6055 view.selected_display_ranges(cx),
6056 &[
6057 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
6058 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2),
6059 ]
6060 );
6061 });
6062
6063 view.update(cx, |view, cx| {
6064 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6065 assert_eq!(
6066 view.selected_display_ranges(cx),
6067 &[
6068 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
6069 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
6070 ]
6071 );
6072 });
6073
6074 view.update(cx, |view, cx| {
6075 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6076 assert_eq!(
6077 view.selected_display_ranges(cx),
6078 &[
6079 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6080 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6081 ]
6082 );
6083 });
6084
6085 view.update(cx, |view, cx| {
6086 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6087 assert_eq!(
6088 view.selected_display_ranges(cx),
6089 &[
6090 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6091 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 23),
6092 ]
6093 );
6094 });
6095
6096 view.update(cx, |view, cx| {
6097 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6098 assert_eq!(
6099 view.selected_display_ranges(cx),
6100 &[
6101 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6102 DisplayPoint::new(0, 24)..DisplayPoint::new(0, 24),
6103 ]
6104 );
6105 });
6106
6107 view.update(cx, |view, cx| {
6108 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6109 assert_eq!(
6110 view.selected_display_ranges(cx),
6111 &[
6112 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
6113 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6114 ]
6115 );
6116 });
6117
6118 view.update(cx, |view, cx| {
6119 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6120 assert_eq!(
6121 view.selected_display_ranges(cx),
6122 &[
6123 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
6124 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
6125 ]
6126 );
6127 });
6128
6129 view.update(cx, |view, cx| {
6130 view.move_right(&MoveRight, cx);
6131 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
6132 assert_eq!(
6133 view.selected_display_ranges(cx),
6134 &[
6135 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
6136 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
6137 ]
6138 );
6139 });
6140
6141 view.update(cx, |view, cx| {
6142 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
6143 assert_eq!(
6144 view.selected_display_ranges(cx),
6145 &[
6146 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 7),
6147 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 2),
6148 ]
6149 );
6150 });
6151
6152 view.update(cx, |view, cx| {
6153 view.select_to_next_word_boundary(&SelectToNextWordBoundary, cx);
6154 assert_eq!(
6155 view.selected_display_ranges(cx),
6156 &[
6157 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
6158 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
6159 ]
6160 );
6161 });
6162 }
6163
6164 #[gpui::test]
6165 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
6166 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
6167 let settings = EditorSettings::test(&cx);
6168 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6169
6170 view.update(cx, |view, cx| {
6171 view.set_wrap_width(Some(140.), cx);
6172 assert_eq!(
6173 view.display_text(cx),
6174 "use one::{\n two::three::\n four::five\n};"
6175 );
6176
6177 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx);
6178
6179 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6180 assert_eq!(
6181 view.selected_display_ranges(cx),
6182 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
6183 );
6184
6185 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6186 assert_eq!(
6187 view.selected_display_ranges(cx),
6188 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
6189 );
6190
6191 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6192 assert_eq!(
6193 view.selected_display_ranges(cx),
6194 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
6195 );
6196
6197 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6198 assert_eq!(
6199 view.selected_display_ranges(cx),
6200 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
6201 );
6202
6203 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6204 assert_eq!(
6205 view.selected_display_ranges(cx),
6206 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
6207 );
6208
6209 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6210 assert_eq!(
6211 view.selected_display_ranges(cx),
6212 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
6213 );
6214 });
6215 }
6216
6217 #[gpui::test]
6218 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
6219 let buffer = MultiBuffer::build_simple("one two three four", cx);
6220 let settings = EditorSettings::test(&cx);
6221 let (_, view) = cx.add_window(Default::default(), |cx| {
6222 build_editor(buffer.clone(), settings, cx)
6223 });
6224
6225 view.update(cx, |view, cx| {
6226 view.select_display_ranges(
6227 &[
6228 // an empty selection - the preceding word fragment is deleted
6229 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6230 // characters selected - they are deleted
6231 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
6232 ],
6233 cx,
6234 );
6235 view.delete_to_previous_word_boundary(&DeleteToPreviousWordBoundary, cx);
6236 });
6237
6238 assert_eq!(buffer.read(cx).read(cx).text(), "e two te four");
6239
6240 view.update(cx, |view, cx| {
6241 view.select_display_ranges(
6242 &[
6243 // an empty selection - the following word fragment is deleted
6244 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6245 // characters selected - they are deleted
6246 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
6247 ],
6248 cx,
6249 );
6250 view.delete_to_next_word_boundary(&DeleteToNextWordBoundary, cx);
6251 });
6252
6253 assert_eq!(buffer.read(cx).read(cx).text(), "e t te our");
6254 }
6255
6256 #[gpui::test]
6257 fn test_newline(cx: &mut gpui::MutableAppContext) {
6258 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
6259 let settings = EditorSettings::test(&cx);
6260 let (_, view) = cx.add_window(Default::default(), |cx| {
6261 build_editor(buffer.clone(), settings, cx)
6262 });
6263
6264 view.update(cx, |view, cx| {
6265 view.select_display_ranges(
6266 &[
6267 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6268 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6269 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
6270 ],
6271 cx,
6272 );
6273
6274 view.newline(&Newline, cx);
6275 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
6276 });
6277 }
6278
6279 #[gpui::test]
6280 fn test_newline_with_old_selections(cx: &mut gpui::MutableAppContext) {
6281 let buffer = MultiBuffer::build_simple(
6282 "
6283 a
6284 b(
6285 X
6286 )
6287 c(
6288 X
6289 )
6290 "
6291 .unindent()
6292 .as_str(),
6293 cx,
6294 );
6295
6296 let settings = EditorSettings::test(&cx);
6297 let (_, editor) = cx.add_window(Default::default(), |cx| {
6298 let mut editor = build_editor(buffer.clone(), settings, cx);
6299 editor.select_ranges(
6300 [
6301 Point::new(2, 4)..Point::new(2, 5),
6302 Point::new(5, 4)..Point::new(5, 5),
6303 ],
6304 None,
6305 cx,
6306 );
6307 editor
6308 });
6309
6310 // Edit the buffer directly, deleting ranges surrounding the editor's selections
6311 buffer.update(cx, |buffer, cx| {
6312 buffer.edit(
6313 [
6314 Point::new(1, 2)..Point::new(3, 0),
6315 Point::new(4, 2)..Point::new(6, 0),
6316 ],
6317 "",
6318 cx,
6319 );
6320 assert_eq!(
6321 buffer.read(cx).text(),
6322 "
6323 a
6324 b()
6325 c()
6326 "
6327 .unindent()
6328 );
6329 });
6330
6331 editor.update(cx, |editor, cx| {
6332 assert_eq!(
6333 editor.selected_ranges(cx),
6334 &[
6335 Point::new(1, 2)..Point::new(1, 2),
6336 Point::new(2, 2)..Point::new(2, 2),
6337 ],
6338 );
6339
6340 editor.newline(&Newline, cx);
6341 assert_eq!(
6342 editor.text(cx),
6343 "
6344 a
6345 b(
6346 )
6347 c(
6348 )
6349 "
6350 .unindent()
6351 );
6352
6353 // The selections are moved after the inserted newlines
6354 assert_eq!(
6355 editor.selected_ranges(cx),
6356 &[
6357 Point::new(2, 0)..Point::new(2, 0),
6358 Point::new(4, 0)..Point::new(4, 0),
6359 ],
6360 );
6361 });
6362 }
6363
6364 #[gpui::test]
6365 fn test_insert_with_old_selections(cx: &mut gpui::MutableAppContext) {
6366 let buffer = MultiBuffer::build_simple("a( X ), b( Y ), c( Z )", cx);
6367
6368 let settings = EditorSettings::test(&cx);
6369 let (_, editor) = cx.add_window(Default::default(), |cx| {
6370 let mut editor = build_editor(buffer.clone(), settings, cx);
6371 editor.select_ranges([3..4, 11..12, 19..20], None, cx);
6372 editor
6373 });
6374
6375 // Edit the buffer directly, deleting ranges surrounding the editor's selections
6376 buffer.update(cx, |buffer, cx| {
6377 buffer.edit([2..5, 10..13, 18..21], "", cx);
6378 assert_eq!(buffer.read(cx).text(), "a(), b(), c()".unindent());
6379 });
6380
6381 editor.update(cx, |editor, cx| {
6382 assert_eq!(editor.selected_ranges(cx), &[2..2, 7..7, 12..12],);
6383
6384 editor.insert("Z", cx);
6385 assert_eq!(editor.text(cx), "a(Z), b(Z), c(Z)");
6386
6387 // The selections are moved after the inserted characters
6388 assert_eq!(editor.selected_ranges(cx), &[3..3, 9..9, 15..15],);
6389 });
6390 }
6391
6392 #[gpui::test]
6393 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
6394 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
6395 let settings = EditorSettings::test(&cx);
6396 let (_, view) = cx.add_window(Default::default(), |cx| {
6397 build_editor(buffer.clone(), settings, cx)
6398 });
6399
6400 view.update(cx, |view, cx| {
6401 // two selections on the same line
6402 view.select_display_ranges(
6403 &[
6404 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
6405 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
6406 ],
6407 cx,
6408 );
6409
6410 // indent from mid-tabstop to full tabstop
6411 view.tab(&Tab, cx);
6412 assert_eq!(view.text(cx), " one two\nthree\n four");
6413 assert_eq!(
6414 view.selected_display_ranges(cx),
6415 &[
6416 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
6417 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
6418 ]
6419 );
6420
6421 // outdent from 1 tabstop to 0 tabstops
6422 view.outdent(&Outdent, cx);
6423 assert_eq!(view.text(cx), "one two\nthree\n four");
6424 assert_eq!(
6425 view.selected_display_ranges(cx),
6426 &[
6427 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
6428 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
6429 ]
6430 );
6431
6432 // select across line ending
6433 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx);
6434
6435 // indent and outdent affect only the preceding line
6436 view.tab(&Tab, cx);
6437 assert_eq!(view.text(cx), "one two\n three\n four");
6438 assert_eq!(
6439 view.selected_display_ranges(cx),
6440 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
6441 );
6442 view.outdent(&Outdent, cx);
6443 assert_eq!(view.text(cx), "one two\nthree\n four");
6444 assert_eq!(
6445 view.selected_display_ranges(cx),
6446 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
6447 );
6448
6449 // Ensure that indenting/outdenting works when the cursor is at column 0.
6450 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
6451 view.tab(&Tab, cx);
6452 assert_eq!(view.text(cx), "one two\n three\n four");
6453 assert_eq!(
6454 view.selected_display_ranges(cx),
6455 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
6456 );
6457
6458 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
6459 view.outdent(&Outdent, cx);
6460 assert_eq!(view.text(cx), "one two\nthree\n four");
6461 assert_eq!(
6462 view.selected_display_ranges(cx),
6463 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6464 );
6465 });
6466 }
6467
6468 #[gpui::test]
6469 fn test_backspace(cx: &mut gpui::MutableAppContext) {
6470 let buffer =
6471 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
6472 let settings = EditorSettings::test(&cx);
6473 let (_, view) = cx.add_window(Default::default(), |cx| {
6474 build_editor(buffer.clone(), settings, cx)
6475 });
6476
6477 view.update(cx, |view, cx| {
6478 view.select_display_ranges(
6479 &[
6480 // an empty selection - the preceding character is deleted
6481 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6482 // one character selected - it is deleted
6483 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
6484 // a line suffix selected - it is deleted
6485 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
6486 ],
6487 cx,
6488 );
6489 view.backspace(&Backspace, cx);
6490 });
6491
6492 assert_eq!(
6493 buffer.read(cx).read(cx).text(),
6494 "oe two three\nfou five six\nseven ten\n"
6495 );
6496 }
6497
6498 #[gpui::test]
6499 fn test_delete(cx: &mut gpui::MutableAppContext) {
6500 let buffer =
6501 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
6502 let settings = EditorSettings::test(&cx);
6503 let (_, view) = cx.add_window(Default::default(), |cx| {
6504 build_editor(buffer.clone(), settings, cx)
6505 });
6506
6507 view.update(cx, |view, cx| {
6508 view.select_display_ranges(
6509 &[
6510 // an empty selection - the following character is deleted
6511 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6512 // one character selected - it is deleted
6513 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
6514 // a line suffix selected - it is deleted
6515 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
6516 ],
6517 cx,
6518 );
6519 view.delete(&Delete, cx);
6520 });
6521
6522 assert_eq!(
6523 buffer.read(cx).read(cx).text(),
6524 "on two three\nfou five six\nseven ten\n"
6525 );
6526 }
6527
6528 #[gpui::test]
6529 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
6530 let settings = EditorSettings::test(&cx);
6531 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
6532 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6533 view.update(cx, |view, cx| {
6534 view.select_display_ranges(
6535 &[
6536 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6537 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
6538 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6539 ],
6540 cx,
6541 );
6542 view.delete_line(&DeleteLine, cx);
6543 assert_eq!(view.display_text(cx), "ghi");
6544 assert_eq!(
6545 view.selected_display_ranges(cx),
6546 vec![
6547 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6548 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
6549 ]
6550 );
6551 });
6552
6553 let settings = EditorSettings::test(&cx);
6554 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
6555 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6556 view.update(cx, |view, cx| {
6557 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx);
6558 view.delete_line(&DeleteLine, cx);
6559 assert_eq!(view.display_text(cx), "ghi\n");
6560 assert_eq!(
6561 view.selected_display_ranges(cx),
6562 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
6563 );
6564 });
6565 }
6566
6567 #[gpui::test]
6568 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
6569 let settings = EditorSettings::test(&cx);
6570 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
6571 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6572 view.update(cx, |view, cx| {
6573 view.select_display_ranges(
6574 &[
6575 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
6576 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6577 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6578 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6579 ],
6580 cx,
6581 );
6582 view.duplicate_line(&DuplicateLine, cx);
6583 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
6584 assert_eq!(
6585 view.selected_display_ranges(cx),
6586 vec![
6587 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
6588 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6589 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6590 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
6591 ]
6592 );
6593 });
6594
6595 let settings = EditorSettings::test(&cx);
6596 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
6597 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6598 view.update(cx, |view, cx| {
6599 view.select_display_ranges(
6600 &[
6601 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
6602 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
6603 ],
6604 cx,
6605 );
6606 view.duplicate_line(&DuplicateLine, cx);
6607 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
6608 assert_eq!(
6609 view.selected_display_ranges(cx),
6610 vec![
6611 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
6612 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
6613 ]
6614 );
6615 });
6616 }
6617
6618 #[gpui::test]
6619 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
6620 let settings = EditorSettings::test(&cx);
6621 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
6622 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6623 view.update(cx, |view, cx| {
6624 view.fold_ranges(
6625 vec![
6626 Point::new(0, 2)..Point::new(1, 2),
6627 Point::new(2, 3)..Point::new(4, 1),
6628 Point::new(7, 0)..Point::new(8, 4),
6629 ],
6630 cx,
6631 );
6632 view.select_display_ranges(
6633 &[
6634 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6635 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
6636 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
6637 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
6638 ],
6639 cx,
6640 );
6641 assert_eq!(
6642 view.display_text(cx),
6643 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
6644 );
6645
6646 view.move_line_up(&MoveLineUp, cx);
6647 assert_eq!(
6648 view.display_text(cx),
6649 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
6650 );
6651 assert_eq!(
6652 view.selected_display_ranges(cx),
6653 vec![
6654 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6655 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6656 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
6657 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
6658 ]
6659 );
6660 });
6661
6662 view.update(cx, |view, cx| {
6663 view.move_line_down(&MoveLineDown, cx);
6664 assert_eq!(
6665 view.display_text(cx),
6666 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
6667 );
6668 assert_eq!(
6669 view.selected_display_ranges(cx),
6670 vec![
6671 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6672 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
6673 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
6674 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
6675 ]
6676 );
6677 });
6678
6679 view.update(cx, |view, cx| {
6680 view.move_line_down(&MoveLineDown, cx);
6681 assert_eq!(
6682 view.display_text(cx),
6683 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
6684 );
6685 assert_eq!(
6686 view.selected_display_ranges(cx),
6687 vec![
6688 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6689 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
6690 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
6691 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
6692 ]
6693 );
6694 });
6695
6696 view.update(cx, |view, cx| {
6697 view.move_line_up(&MoveLineUp, cx);
6698 assert_eq!(
6699 view.display_text(cx),
6700 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
6701 );
6702 assert_eq!(
6703 view.selected_display_ranges(cx),
6704 vec![
6705 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6706 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6707 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
6708 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
6709 ]
6710 );
6711 });
6712 }
6713
6714 #[gpui::test]
6715 fn test_move_line_up_down_with_blocks(cx: &mut gpui::MutableAppContext) {
6716 let settings = EditorSettings::test(&cx);
6717 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
6718 let snapshot = buffer.read(cx).snapshot(cx);
6719 let (_, editor) =
6720 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6721 editor.update(cx, |editor, cx| {
6722 editor.insert_blocks(
6723 [BlockProperties {
6724 position: snapshot.anchor_after(Point::new(2, 0)),
6725 disposition: BlockDisposition::Below,
6726 height: 1,
6727 render: Arc::new(|_| Empty::new().boxed()),
6728 }],
6729 cx,
6730 );
6731 editor.select_ranges([Point::new(2, 0)..Point::new(2, 0)], None, cx);
6732 editor.move_line_down(&MoveLineDown, cx);
6733 });
6734 }
6735
6736 #[gpui::test]
6737 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
6738 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
6739 let settings = EditorSettings::test(&cx);
6740 let view = cx
6741 .add_window(Default::default(), |cx| {
6742 build_editor(buffer.clone(), settings, cx)
6743 })
6744 .1;
6745
6746 // Cut with three selections. Clipboard text is divided into three slices.
6747 view.update(cx, |view, cx| {
6748 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
6749 view.cut(&Cut, cx);
6750 assert_eq!(view.display_text(cx), "two four six ");
6751 });
6752
6753 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
6754 view.update(cx, |view, cx| {
6755 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
6756 view.paste(&Paste, cx);
6757 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
6758 assert_eq!(
6759 view.selected_display_ranges(cx),
6760 &[
6761 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
6762 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
6763 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
6764 ]
6765 );
6766 });
6767
6768 // Paste again but with only two cursors. Since the number of cursors doesn't
6769 // match the number of slices in the clipboard, the entire clipboard text
6770 // is pasted at each cursor.
6771 view.update(cx, |view, cx| {
6772 view.select_ranges(vec![0..0, 31..31], None, cx);
6773 view.handle_input(&Input("( ".into()), cx);
6774 view.paste(&Paste, cx);
6775 view.handle_input(&Input(") ".into()), cx);
6776 assert_eq!(
6777 view.display_text(cx),
6778 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
6779 );
6780 });
6781
6782 view.update(cx, |view, cx| {
6783 view.select_ranges(vec![0..0], None, cx);
6784 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
6785 assert_eq!(
6786 view.display_text(cx),
6787 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
6788 );
6789 });
6790
6791 // Cut with three selections, one of which is full-line.
6792 view.update(cx, |view, cx| {
6793 view.select_display_ranges(
6794 &[
6795 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
6796 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6797 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
6798 ],
6799 cx,
6800 );
6801 view.cut(&Cut, cx);
6802 assert_eq!(
6803 view.display_text(cx),
6804 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
6805 );
6806 });
6807
6808 // Paste with three selections, noticing how the copied selection that was full-line
6809 // gets inserted before the second cursor.
6810 view.update(cx, |view, cx| {
6811 view.select_display_ranges(
6812 &[
6813 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6814 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6815 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
6816 ],
6817 cx,
6818 );
6819 view.paste(&Paste, cx);
6820 assert_eq!(
6821 view.display_text(cx),
6822 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
6823 );
6824 assert_eq!(
6825 view.selected_display_ranges(cx),
6826 &[
6827 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6828 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6829 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
6830 ]
6831 );
6832 });
6833
6834 // Copy with a single cursor only, which writes the whole line into the clipboard.
6835 view.update(cx, |view, cx| {
6836 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx);
6837 view.copy(&Copy, cx);
6838 });
6839
6840 // Paste with three selections, noticing how the copied full-line selection is inserted
6841 // before the empty selections but replaces the selection that is non-empty.
6842 view.update(cx, |view, cx| {
6843 view.select_display_ranges(
6844 &[
6845 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6846 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
6847 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6848 ],
6849 cx,
6850 );
6851 view.paste(&Paste, cx);
6852 assert_eq!(
6853 view.display_text(cx),
6854 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
6855 );
6856 assert_eq!(
6857 view.selected_display_ranges(cx),
6858 &[
6859 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6860 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6861 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
6862 ]
6863 );
6864 });
6865 }
6866
6867 #[gpui::test]
6868 fn test_select_all(cx: &mut gpui::MutableAppContext) {
6869 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
6870 let settings = EditorSettings::test(&cx);
6871 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6872 view.update(cx, |view, cx| {
6873 view.select_all(&SelectAll, cx);
6874 assert_eq!(
6875 view.selected_display_ranges(cx),
6876 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
6877 );
6878 });
6879 }
6880
6881 #[gpui::test]
6882 fn test_select_line(cx: &mut gpui::MutableAppContext) {
6883 let settings = EditorSettings::test(&cx);
6884 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
6885 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6886 view.update(cx, |view, cx| {
6887 view.select_display_ranges(
6888 &[
6889 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
6890 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6891 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6892 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
6893 ],
6894 cx,
6895 );
6896 view.select_line(&SelectLine, cx);
6897 assert_eq!(
6898 view.selected_display_ranges(cx),
6899 vec![
6900 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
6901 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
6902 ]
6903 );
6904 });
6905
6906 view.update(cx, |view, cx| {
6907 view.select_line(&SelectLine, cx);
6908 assert_eq!(
6909 view.selected_display_ranges(cx),
6910 vec![
6911 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
6912 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
6913 ]
6914 );
6915 });
6916
6917 view.update(cx, |view, cx| {
6918 view.select_line(&SelectLine, cx);
6919 assert_eq!(
6920 view.selected_display_ranges(cx),
6921 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
6922 );
6923 });
6924 }
6925
6926 #[gpui::test]
6927 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
6928 let settings = EditorSettings::test(&cx);
6929 let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
6930 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6931 view.update(cx, |view, cx| {
6932 view.fold_ranges(
6933 vec![
6934 Point::new(0, 2)..Point::new(1, 2),
6935 Point::new(2, 3)..Point::new(4, 1),
6936 Point::new(7, 0)..Point::new(8, 4),
6937 ],
6938 cx,
6939 );
6940 view.select_display_ranges(
6941 &[
6942 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
6943 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6944 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6945 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
6946 ],
6947 cx,
6948 );
6949 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
6950 });
6951
6952 view.update(cx, |view, cx| {
6953 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
6954 assert_eq!(
6955 view.display_text(cx),
6956 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
6957 );
6958 assert_eq!(
6959 view.selected_display_ranges(cx),
6960 [
6961 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6962 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6963 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
6964 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
6965 ]
6966 );
6967 });
6968
6969 view.update(cx, |view, cx| {
6970 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx);
6971 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
6972 assert_eq!(
6973 view.display_text(cx),
6974 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
6975 );
6976 assert_eq!(
6977 view.selected_display_ranges(cx),
6978 [
6979 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
6980 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6981 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
6982 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
6983 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
6984 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
6985 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
6986 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
6987 ]
6988 );
6989 });
6990 }
6991
6992 #[gpui::test]
6993 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
6994 let settings = EditorSettings::test(&cx);
6995 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
6996 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6997
6998 view.update(cx, |view, cx| {
6999 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx);
7000 });
7001 view.update(cx, |view, cx| {
7002 view.add_selection_above(&AddSelectionAbove, cx);
7003 assert_eq!(
7004 view.selected_display_ranges(cx),
7005 vec![
7006 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7007 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
7008 ]
7009 );
7010 });
7011
7012 view.update(cx, |view, cx| {
7013 view.add_selection_above(&AddSelectionAbove, cx);
7014 assert_eq!(
7015 view.selected_display_ranges(cx),
7016 vec![
7017 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7018 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
7019 ]
7020 );
7021 });
7022
7023 view.update(cx, |view, cx| {
7024 view.add_selection_below(&AddSelectionBelow, cx);
7025 assert_eq!(
7026 view.selected_display_ranges(cx),
7027 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
7028 );
7029 });
7030
7031 view.update(cx, |view, cx| {
7032 view.add_selection_below(&AddSelectionBelow, cx);
7033 assert_eq!(
7034 view.selected_display_ranges(cx),
7035 vec![
7036 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7037 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
7038 ]
7039 );
7040 });
7041
7042 view.update(cx, |view, cx| {
7043 view.add_selection_below(&AddSelectionBelow, cx);
7044 assert_eq!(
7045 view.selected_display_ranges(cx),
7046 vec![
7047 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7048 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
7049 ]
7050 );
7051 });
7052
7053 view.update(cx, |view, cx| {
7054 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx);
7055 });
7056 view.update(cx, |view, cx| {
7057 view.add_selection_below(&AddSelectionBelow, cx);
7058 assert_eq!(
7059 view.selected_display_ranges(cx),
7060 vec![
7061 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7062 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
7063 ]
7064 );
7065 });
7066
7067 view.update(cx, |view, cx| {
7068 view.add_selection_below(&AddSelectionBelow, cx);
7069 assert_eq!(
7070 view.selected_display_ranges(cx),
7071 vec![
7072 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7073 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
7074 ]
7075 );
7076 });
7077
7078 view.update(cx, |view, cx| {
7079 view.add_selection_above(&AddSelectionAbove, cx);
7080 assert_eq!(
7081 view.selected_display_ranges(cx),
7082 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
7083 );
7084 });
7085
7086 view.update(cx, |view, cx| {
7087 view.add_selection_above(&AddSelectionAbove, cx);
7088 assert_eq!(
7089 view.selected_display_ranges(cx),
7090 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
7091 );
7092 });
7093
7094 view.update(cx, |view, cx| {
7095 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx);
7096 view.add_selection_below(&AddSelectionBelow, cx);
7097 assert_eq!(
7098 view.selected_display_ranges(cx),
7099 vec![
7100 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7101 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7102 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7103 ]
7104 );
7105 });
7106
7107 view.update(cx, |view, cx| {
7108 view.add_selection_below(&AddSelectionBelow, cx);
7109 assert_eq!(
7110 view.selected_display_ranges(cx),
7111 vec![
7112 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7113 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7114 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7115 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
7116 ]
7117 );
7118 });
7119
7120 view.update(cx, |view, cx| {
7121 view.add_selection_above(&AddSelectionAbove, cx);
7122 assert_eq!(
7123 view.selected_display_ranges(cx),
7124 vec![
7125 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7126 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7127 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7128 ]
7129 );
7130 });
7131
7132 view.update(cx, |view, cx| {
7133 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx);
7134 });
7135 view.update(cx, |view, cx| {
7136 view.add_selection_above(&AddSelectionAbove, cx);
7137 assert_eq!(
7138 view.selected_display_ranges(cx),
7139 vec![
7140 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
7141 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
7142 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
7143 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
7144 ]
7145 );
7146 });
7147
7148 view.update(cx, |view, cx| {
7149 view.add_selection_below(&AddSelectionBelow, cx);
7150 assert_eq!(
7151 view.selected_display_ranges(cx),
7152 vec![
7153 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
7154 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
7155 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
7156 ]
7157 );
7158 });
7159 }
7160
7161 #[gpui::test]
7162 async fn test_select_larger_smaller_syntax_node(mut cx: gpui::TestAppContext) {
7163 let settings = cx.read(EditorSettings::test);
7164 let language = Arc::new(Language::new(
7165 LanguageConfig::default(),
7166 Some(tree_sitter_rust::language()),
7167 ));
7168
7169 let text = r#"
7170 use mod1::mod2::{mod3, mod4};
7171
7172 fn fn_1(param1: bool, param2: &str) {
7173 let var1 = "text";
7174 }
7175 "#
7176 .unindent();
7177
7178 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7179 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7180 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7181 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
7182 .await;
7183
7184 view.update(&mut cx, |view, cx| {
7185 view.select_display_ranges(
7186 &[
7187 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7188 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7189 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7190 ],
7191 cx,
7192 );
7193 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7194 });
7195 assert_eq!(
7196 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7197 &[
7198 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
7199 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7200 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
7201 ]
7202 );
7203
7204 view.update(&mut cx, |view, cx| {
7205 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7206 });
7207 assert_eq!(
7208 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7209 &[
7210 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
7211 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
7212 ]
7213 );
7214
7215 view.update(&mut cx, |view, cx| {
7216 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7217 });
7218 assert_eq!(
7219 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7220 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
7221 );
7222
7223 // Trying to expand the selected syntax node one more time has no effect.
7224 view.update(&mut cx, |view, cx| {
7225 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7226 });
7227 assert_eq!(
7228 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7229 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
7230 );
7231
7232 view.update(&mut cx, |view, cx| {
7233 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7234 });
7235 assert_eq!(
7236 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7237 &[
7238 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
7239 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
7240 ]
7241 );
7242
7243 view.update(&mut cx, |view, cx| {
7244 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7245 });
7246 assert_eq!(
7247 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7248 &[
7249 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
7250 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7251 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
7252 ]
7253 );
7254
7255 view.update(&mut cx, |view, cx| {
7256 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7257 });
7258 assert_eq!(
7259 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7260 &[
7261 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7262 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7263 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7264 ]
7265 );
7266
7267 // Trying to shrink the selected syntax node one more time has no effect.
7268 view.update(&mut cx, |view, cx| {
7269 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7270 });
7271 assert_eq!(
7272 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7273 &[
7274 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7275 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7276 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7277 ]
7278 );
7279
7280 // Ensure that we keep expanding the selection if the larger selection starts or ends within
7281 // a fold.
7282 view.update(&mut cx, |view, cx| {
7283 view.fold_ranges(
7284 vec![
7285 Point::new(0, 21)..Point::new(0, 24),
7286 Point::new(3, 20)..Point::new(3, 22),
7287 ],
7288 cx,
7289 );
7290 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7291 });
7292 assert_eq!(
7293 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7294 &[
7295 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
7296 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7297 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
7298 ]
7299 );
7300 }
7301
7302 #[gpui::test]
7303 async fn test_autoindent_selections(mut cx: gpui::TestAppContext) {
7304 let settings = cx.read(EditorSettings::test);
7305 let language = Arc::new(
7306 Language::new(
7307 LanguageConfig {
7308 brackets: vec![
7309 BracketPair {
7310 start: "{".to_string(),
7311 end: "}".to_string(),
7312 close: false,
7313 newline: true,
7314 },
7315 BracketPair {
7316 start: "(".to_string(),
7317 end: ")".to_string(),
7318 close: false,
7319 newline: true,
7320 },
7321 ],
7322 ..Default::default()
7323 },
7324 Some(tree_sitter_rust::language()),
7325 )
7326 .with_indents_query(
7327 r#"
7328 (_ "(" ")" @end) @indent
7329 (_ "{" "}" @end) @indent
7330 "#,
7331 )
7332 .unwrap(),
7333 );
7334
7335 let text = "fn a() {}";
7336
7337 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7338 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7339 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7340 editor
7341 .condition(&cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
7342 .await;
7343
7344 editor.update(&mut cx, |editor, cx| {
7345 editor.select_ranges([5..5, 8..8, 9..9], None, cx);
7346 editor.newline(&Newline, cx);
7347 assert_eq!(editor.text(cx), "fn a(\n \n) {\n \n}\n");
7348 assert_eq!(
7349 editor.selected_ranges(cx),
7350 &[
7351 Point::new(1, 4)..Point::new(1, 4),
7352 Point::new(3, 4)..Point::new(3, 4),
7353 Point::new(5, 0)..Point::new(5, 0)
7354 ]
7355 );
7356 });
7357 }
7358
7359 #[gpui::test]
7360 async fn test_autoclose_pairs(mut cx: gpui::TestAppContext) {
7361 let settings = cx.read(EditorSettings::test);
7362 let language = Arc::new(Language::new(
7363 LanguageConfig {
7364 brackets: vec![
7365 BracketPair {
7366 start: "{".to_string(),
7367 end: "}".to_string(),
7368 close: true,
7369 newline: true,
7370 },
7371 BracketPair {
7372 start: "/*".to_string(),
7373 end: " */".to_string(),
7374 close: true,
7375 newline: true,
7376 },
7377 ],
7378 ..Default::default()
7379 },
7380 Some(tree_sitter_rust::language()),
7381 ));
7382
7383 let text = r#"
7384 a
7385
7386 /
7387
7388 "#
7389 .unindent();
7390
7391 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7392 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7393 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7394 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
7395 .await;
7396
7397 view.update(&mut cx, |view, cx| {
7398 view.select_display_ranges(
7399 &[
7400 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7401 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7402 ],
7403 cx,
7404 );
7405 view.handle_input(&Input("{".to_string()), cx);
7406 view.handle_input(&Input("{".to_string()), cx);
7407 view.handle_input(&Input("{".to_string()), cx);
7408 assert_eq!(
7409 view.text(cx),
7410 "
7411 {{{}}}
7412 {{{}}}
7413 /
7414
7415 "
7416 .unindent()
7417 );
7418
7419 view.move_right(&MoveRight, cx);
7420 view.handle_input(&Input("}".to_string()), cx);
7421 view.handle_input(&Input("}".to_string()), cx);
7422 view.handle_input(&Input("}".to_string()), cx);
7423 assert_eq!(
7424 view.text(cx),
7425 "
7426 {{{}}}}
7427 {{{}}}}
7428 /
7429
7430 "
7431 .unindent()
7432 );
7433
7434 view.undo(&Undo, cx);
7435 view.handle_input(&Input("/".to_string()), cx);
7436 view.handle_input(&Input("*".to_string()), cx);
7437 assert_eq!(
7438 view.text(cx),
7439 "
7440 /* */
7441 /* */
7442 /
7443
7444 "
7445 .unindent()
7446 );
7447
7448 view.undo(&Undo, cx);
7449 view.select_display_ranges(
7450 &[
7451 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7452 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7453 ],
7454 cx,
7455 );
7456 view.handle_input(&Input("*".to_string()), cx);
7457 assert_eq!(
7458 view.text(cx),
7459 "
7460 a
7461
7462 /*
7463 *
7464 "
7465 .unindent()
7466 );
7467 });
7468 }
7469
7470 #[gpui::test]
7471 async fn test_snippets(mut cx: gpui::TestAppContext) {
7472 let settings = cx.read(EditorSettings::test);
7473
7474 let text = "
7475 a. b
7476 a. b
7477 a. b
7478 "
7479 .unindent();
7480 let buffer = cx.update(|cx| MultiBuffer::build_simple(&text, cx));
7481 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7482
7483 editor.update(&mut cx, |editor, cx| {
7484 let buffer = &editor.snapshot(cx).buffer_snapshot;
7485 let snippet = Snippet::parse("f(${1:one}, ${2:two}, ${1:three})$0").unwrap();
7486 let insertion_ranges = [
7487 Point::new(0, 2).to_offset(buffer)..Point::new(0, 2).to_offset(buffer),
7488 Point::new(1, 2).to_offset(buffer)..Point::new(1, 2).to_offset(buffer),
7489 Point::new(2, 2).to_offset(buffer)..Point::new(2, 2).to_offset(buffer),
7490 ];
7491
7492 editor
7493 .insert_snippet(&insertion_ranges, snippet, cx)
7494 .unwrap();
7495 assert_eq!(
7496 editor.text(cx),
7497 "
7498 a.f(one, two, three) b
7499 a.f(one, two, three) b
7500 a.f(one, two, three) b
7501 "
7502 .unindent()
7503 );
7504 assert_eq!(
7505 editor.selected_ranges::<Point>(cx),
7506 &[
7507 Point::new(0, 4)..Point::new(0, 7),
7508 Point::new(0, 14)..Point::new(0, 19),
7509 Point::new(1, 4)..Point::new(1, 7),
7510 Point::new(1, 14)..Point::new(1, 19),
7511 Point::new(2, 4)..Point::new(2, 7),
7512 Point::new(2, 14)..Point::new(2, 19),
7513 ]
7514 );
7515
7516 // Can't move earlier than the first tab stop
7517 editor.move_to_prev_snippet_tabstop(cx);
7518 assert_eq!(
7519 editor.selected_ranges::<Point>(cx),
7520 &[
7521 Point::new(0, 4)..Point::new(0, 7),
7522 Point::new(0, 14)..Point::new(0, 19),
7523 Point::new(1, 4)..Point::new(1, 7),
7524 Point::new(1, 14)..Point::new(1, 19),
7525 Point::new(2, 4)..Point::new(2, 7),
7526 Point::new(2, 14)..Point::new(2, 19),
7527 ]
7528 );
7529
7530 assert!(editor.move_to_next_snippet_tabstop(cx));
7531 assert_eq!(
7532 editor.selected_ranges::<Point>(cx),
7533 &[
7534 Point::new(0, 9)..Point::new(0, 12),
7535 Point::new(1, 9)..Point::new(1, 12),
7536 Point::new(2, 9)..Point::new(2, 12)
7537 ]
7538 );
7539
7540 editor.move_to_prev_snippet_tabstop(cx);
7541 assert_eq!(
7542 editor.selected_ranges::<Point>(cx),
7543 &[
7544 Point::new(0, 4)..Point::new(0, 7),
7545 Point::new(0, 14)..Point::new(0, 19),
7546 Point::new(1, 4)..Point::new(1, 7),
7547 Point::new(1, 14)..Point::new(1, 19),
7548 Point::new(2, 4)..Point::new(2, 7),
7549 Point::new(2, 14)..Point::new(2, 19),
7550 ]
7551 );
7552
7553 assert!(editor.move_to_next_snippet_tabstop(cx));
7554 assert!(editor.move_to_next_snippet_tabstop(cx));
7555 assert_eq!(
7556 editor.selected_ranges::<Point>(cx),
7557 &[
7558 Point::new(0, 20)..Point::new(0, 20),
7559 Point::new(1, 20)..Point::new(1, 20),
7560 Point::new(2, 20)..Point::new(2, 20)
7561 ]
7562 );
7563
7564 // As soon as the last tab stop is reached, snippet state is gone
7565 editor.move_to_prev_snippet_tabstop(cx);
7566 assert_eq!(
7567 editor.selected_ranges::<Point>(cx),
7568 &[
7569 Point::new(0, 20)..Point::new(0, 20),
7570 Point::new(1, 20)..Point::new(1, 20),
7571 Point::new(2, 20)..Point::new(2, 20)
7572 ]
7573 );
7574 });
7575 }
7576
7577 #[gpui::test]
7578 async fn test_completion(mut cx: gpui::TestAppContext) {
7579 let settings = cx.read(EditorSettings::test);
7580 let (language_server, mut fake) = lsp::LanguageServer::fake_with_capabilities(
7581 lsp::ServerCapabilities {
7582 completion_provider: Some(lsp::CompletionOptions {
7583 trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
7584 ..Default::default()
7585 }),
7586 ..Default::default()
7587 },
7588 &cx,
7589 )
7590 .await;
7591
7592 let text = "
7593 one
7594 two
7595 three
7596 "
7597 .unindent();
7598
7599 let fs = Arc::new(FakeFs::new(cx.background().clone()));
7600 fs.insert_file("/file", text).await.unwrap();
7601
7602 let project = Project::test(fs, &mut cx);
7603
7604 let (worktree, relative_path) = project
7605 .update(&mut cx, |project, cx| {
7606 project.find_or_create_local_worktree("/file", false, cx)
7607 })
7608 .await
7609 .unwrap();
7610 let project_path = ProjectPath {
7611 worktree_id: worktree.read_with(&cx, |worktree, _| worktree.id()),
7612 path: relative_path.into(),
7613 };
7614 let buffer = project
7615 .update(&mut cx, |project, cx| project.open_buffer(project_path, cx))
7616 .await
7617 .unwrap();
7618 buffer.update(&mut cx, |buffer, cx| {
7619 buffer.set_language_server(Some(language_server), cx);
7620 });
7621
7622 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7623 buffer.next_notification(&cx).await;
7624
7625 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7626
7627 editor.update(&mut cx, |editor, cx| {
7628 editor.project = Some(project);
7629 editor.select_ranges([Point::new(0, 3)..Point::new(0, 3)], None, cx);
7630 editor.handle_input(&Input(".".to_string()), cx);
7631 });
7632
7633 handle_completion_request(
7634 &mut fake,
7635 "/file",
7636 Point::new(0, 4),
7637 &[
7638 (Point::new(0, 4)..Point::new(0, 4), "first_completion"),
7639 (Point::new(0, 4)..Point::new(0, 4), "second_completion"),
7640 ],
7641 )
7642 .await;
7643 editor.next_notification(&cx).await;
7644
7645 let apply_additional_edits = editor.update(&mut cx, |editor, cx| {
7646 editor.move_down(&MoveDown, cx);
7647 let apply_additional_edits = editor
7648 .confirm_completion(&ConfirmCompletion(None), cx)
7649 .unwrap();
7650 assert_eq!(
7651 editor.text(cx),
7652 "
7653 one.second_completion
7654 two
7655 three
7656 "
7657 .unindent()
7658 );
7659 apply_additional_edits
7660 });
7661
7662 handle_resolve_completion_request(
7663 &mut fake,
7664 Some((Point::new(2, 5)..Point::new(2, 5), "\nadditional edit")),
7665 )
7666 .await;
7667 apply_additional_edits.await.unwrap();
7668 assert_eq!(
7669 editor.read_with(&cx, |editor, cx| editor.text(cx)),
7670 "
7671 one.second_completion
7672 two
7673 three
7674 additional edit
7675 "
7676 .unindent()
7677 );
7678
7679 editor.update(&mut cx, |editor, cx| {
7680 editor.select_ranges(
7681 [
7682 Point::new(1, 3)..Point::new(1, 3),
7683 Point::new(2, 5)..Point::new(2, 5),
7684 ],
7685 None,
7686 cx,
7687 );
7688
7689 editor.handle_input(&Input(" ".to_string()), cx);
7690 assert!(editor.context_menu.is_none());
7691 editor.handle_input(&Input("s".to_string()), cx);
7692 assert!(editor.context_menu.is_none());
7693 });
7694
7695 handle_completion_request(
7696 &mut fake,
7697 "/file",
7698 Point::new(2, 7),
7699 &[
7700 (Point::new(2, 6)..Point::new(2, 7), "fourth_completion"),
7701 (Point::new(2, 6)..Point::new(2, 7), "fifth_completion"),
7702 (Point::new(2, 6)..Point::new(2, 7), "sixth_completion"),
7703 ],
7704 )
7705 .await;
7706 editor
7707 .condition(&cx, |editor, _| editor.context_menu.is_some())
7708 .await;
7709
7710 editor.update(&mut cx, |editor, cx| {
7711 editor.handle_input(&Input("i".to_string()), cx);
7712 });
7713
7714 handle_completion_request(
7715 &mut fake,
7716 "/file",
7717 Point::new(2, 8),
7718 &[
7719 (Point::new(2, 6)..Point::new(2, 8), "fourth_completion"),
7720 (Point::new(2, 6)..Point::new(2, 8), "fifth_completion"),
7721 (Point::new(2, 6)..Point::new(2, 8), "sixth_completion"),
7722 ],
7723 )
7724 .await;
7725 editor.next_notification(&cx).await;
7726
7727 let apply_additional_edits = editor.update(&mut cx, |editor, cx| {
7728 let apply_additional_edits = editor
7729 .confirm_completion(&ConfirmCompletion(None), cx)
7730 .unwrap();
7731 assert_eq!(
7732 editor.text(cx),
7733 "
7734 one.second_completion
7735 two sixth_completion
7736 three sixth_completion
7737 additional edit
7738 "
7739 .unindent()
7740 );
7741 apply_additional_edits
7742 });
7743 handle_resolve_completion_request(&mut fake, None).await;
7744 apply_additional_edits.await.unwrap();
7745
7746 async fn handle_completion_request(
7747 fake: &mut FakeLanguageServer,
7748 path: &str,
7749 position: Point,
7750 completions: &[(Range<Point>, &str)],
7751 ) {
7752 let (id, params) = fake.receive_request::<lsp::request::Completion>().await;
7753 assert_eq!(
7754 params.text_document_position.text_document.uri,
7755 lsp::Url::from_file_path(path).unwrap()
7756 );
7757 assert_eq!(
7758 params.text_document_position.position,
7759 lsp::Position::new(position.row, position.column)
7760 );
7761
7762 let completions = completions
7763 .iter()
7764 .map(|(range, new_text)| lsp::CompletionItem {
7765 label: new_text.to_string(),
7766 text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
7767 range: lsp::Range::new(
7768 lsp::Position::new(range.start.row, range.start.column),
7769 lsp::Position::new(range.start.row, range.start.column),
7770 ),
7771 new_text: new_text.to_string(),
7772 })),
7773 ..Default::default()
7774 })
7775 .collect();
7776 fake.respond(id, Some(lsp::CompletionResponse::Array(completions)))
7777 .await;
7778 }
7779
7780 async fn handle_resolve_completion_request(
7781 fake: &mut FakeLanguageServer,
7782 edit: Option<(Range<Point>, &str)>,
7783 ) {
7784 let (id, _) = fake
7785 .receive_request::<lsp::request::ResolveCompletionItem>()
7786 .await;
7787 fake.respond(
7788 id,
7789 lsp::CompletionItem {
7790 additional_text_edits: edit.map(|(range, new_text)| {
7791 vec![lsp::TextEdit::new(
7792 lsp::Range::new(
7793 lsp::Position::new(range.start.row, range.start.column),
7794 lsp::Position::new(range.end.row, range.end.column),
7795 ),
7796 new_text.to_string(),
7797 )]
7798 }),
7799 ..Default::default()
7800 },
7801 )
7802 .await;
7803 }
7804 }
7805
7806 #[gpui::test]
7807 async fn test_toggle_comment(mut cx: gpui::TestAppContext) {
7808 let settings = cx.read(EditorSettings::test);
7809 let language = Arc::new(Language::new(
7810 LanguageConfig {
7811 line_comment: Some("// ".to_string()),
7812 ..Default::default()
7813 },
7814 Some(tree_sitter_rust::language()),
7815 ));
7816
7817 let text = "
7818 fn a() {
7819 //b();
7820 // c();
7821 // d();
7822 }
7823 "
7824 .unindent();
7825
7826 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7827 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7828 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7829
7830 view.update(&mut cx, |editor, cx| {
7831 // If multiple selections intersect a line, the line is only
7832 // toggled once.
7833 editor.select_display_ranges(
7834 &[
7835 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
7836 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
7837 ],
7838 cx,
7839 );
7840 editor.toggle_comments(&ToggleComments, cx);
7841 assert_eq!(
7842 editor.text(cx),
7843 "
7844 fn a() {
7845 b();
7846 c();
7847 d();
7848 }
7849 "
7850 .unindent()
7851 );
7852
7853 // The comment prefix is inserted at the same column for every line
7854 // in a selection.
7855 editor.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx);
7856 editor.toggle_comments(&ToggleComments, cx);
7857 assert_eq!(
7858 editor.text(cx),
7859 "
7860 fn a() {
7861 // b();
7862 // c();
7863 // d();
7864 }
7865 "
7866 .unindent()
7867 );
7868
7869 // If a selection ends at the beginning of a line, that line is not toggled.
7870 editor.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx);
7871 editor.toggle_comments(&ToggleComments, cx);
7872 assert_eq!(
7873 editor.text(cx),
7874 "
7875 fn a() {
7876 // b();
7877 c();
7878 // d();
7879 }
7880 "
7881 .unindent()
7882 );
7883 });
7884 }
7885
7886 #[gpui::test]
7887 fn test_editing_disjoint_excerpts(cx: &mut gpui::MutableAppContext) {
7888 let settings = EditorSettings::test(cx);
7889 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
7890 let multibuffer = cx.add_model(|cx| {
7891 let mut multibuffer = MultiBuffer::new(0);
7892 multibuffer.push_excerpts(
7893 buffer.clone(),
7894 [
7895 Point::new(0, 0)..Point::new(0, 4),
7896 Point::new(1, 0)..Point::new(1, 4),
7897 ],
7898 cx,
7899 );
7900 multibuffer
7901 });
7902
7903 assert_eq!(multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb");
7904
7905 let (_, view) = cx.add_window(Default::default(), |cx| {
7906 build_editor(multibuffer, settings, cx)
7907 });
7908 view.update(cx, |view, cx| {
7909 assert_eq!(view.text(cx), "aaaa\nbbbb");
7910 view.select_ranges(
7911 [
7912 Point::new(0, 0)..Point::new(0, 0),
7913 Point::new(1, 0)..Point::new(1, 0),
7914 ],
7915 None,
7916 cx,
7917 );
7918
7919 view.handle_input(&Input("X".to_string()), cx);
7920 assert_eq!(view.text(cx), "Xaaaa\nXbbbb");
7921 assert_eq!(
7922 view.selected_ranges(cx),
7923 [
7924 Point::new(0, 1)..Point::new(0, 1),
7925 Point::new(1, 1)..Point::new(1, 1),
7926 ]
7927 )
7928 });
7929 }
7930
7931 #[gpui::test]
7932 fn test_editing_overlapping_excerpts(cx: &mut gpui::MutableAppContext) {
7933 let settings = EditorSettings::test(cx);
7934 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
7935 let multibuffer = cx.add_model(|cx| {
7936 let mut multibuffer = MultiBuffer::new(0);
7937 multibuffer.push_excerpts(
7938 buffer,
7939 [
7940 Point::new(0, 0)..Point::new(1, 4),
7941 Point::new(1, 0)..Point::new(2, 4),
7942 ],
7943 cx,
7944 );
7945 multibuffer
7946 });
7947
7948 assert_eq!(
7949 multibuffer.read(cx).read(cx).text(),
7950 "aaaa\nbbbb\nbbbb\ncccc"
7951 );
7952
7953 let (_, view) = cx.add_window(Default::default(), |cx| {
7954 build_editor(multibuffer, settings, cx)
7955 });
7956 view.update(cx, |view, cx| {
7957 view.select_ranges(
7958 [
7959 Point::new(1, 1)..Point::new(1, 1),
7960 Point::new(2, 3)..Point::new(2, 3),
7961 ],
7962 None,
7963 cx,
7964 );
7965
7966 view.handle_input(&Input("X".to_string()), cx);
7967 assert_eq!(view.text(cx), "aaaa\nbXbbXb\nbXbbXb\ncccc");
7968 assert_eq!(
7969 view.selected_ranges(cx),
7970 [
7971 Point::new(1, 2)..Point::new(1, 2),
7972 Point::new(2, 5)..Point::new(2, 5),
7973 ]
7974 );
7975
7976 view.newline(&Newline, cx);
7977 assert_eq!(view.text(cx), "aaaa\nbX\nbbX\nb\nbX\nbbX\nb\ncccc");
7978 assert_eq!(
7979 view.selected_ranges(cx),
7980 [
7981 Point::new(2, 0)..Point::new(2, 0),
7982 Point::new(6, 0)..Point::new(6, 0),
7983 ]
7984 );
7985 });
7986 }
7987
7988 #[gpui::test]
7989 fn test_refresh_selections(cx: &mut gpui::MutableAppContext) {
7990 let settings = EditorSettings::test(cx);
7991 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
7992 let mut excerpt1_id = None;
7993 let multibuffer = cx.add_model(|cx| {
7994 let mut multibuffer = MultiBuffer::new(0);
7995 excerpt1_id = multibuffer
7996 .push_excerpts(
7997 buffer.clone(),
7998 [
7999 Point::new(0, 0)..Point::new(1, 4),
8000 Point::new(1, 0)..Point::new(2, 4),
8001 ],
8002 cx,
8003 )
8004 .into_iter()
8005 .next();
8006 multibuffer
8007 });
8008 assert_eq!(
8009 multibuffer.read(cx).read(cx).text(),
8010 "aaaa\nbbbb\nbbbb\ncccc"
8011 );
8012 let (_, editor) = cx.add_window(Default::default(), |cx| {
8013 let mut editor = build_editor(multibuffer.clone(), settings, cx);
8014 editor.select_ranges(
8015 [
8016 Point::new(1, 3)..Point::new(1, 3),
8017 Point::new(2, 1)..Point::new(2, 1),
8018 ],
8019 None,
8020 cx,
8021 );
8022 editor
8023 });
8024
8025 // Refreshing selections is a no-op when excerpts haven't changed.
8026 editor.update(cx, |editor, cx| {
8027 editor.refresh_selections(cx);
8028 assert_eq!(
8029 editor.selected_ranges(cx),
8030 [
8031 Point::new(1, 3)..Point::new(1, 3),
8032 Point::new(2, 1)..Point::new(2, 1),
8033 ]
8034 );
8035 });
8036
8037 multibuffer.update(cx, |multibuffer, cx| {
8038 multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx);
8039 });
8040 editor.update(cx, |editor, cx| {
8041 // Removing an excerpt causes the first selection to become degenerate.
8042 assert_eq!(
8043 editor.selected_ranges(cx),
8044 [
8045 Point::new(0, 0)..Point::new(0, 0),
8046 Point::new(0, 1)..Point::new(0, 1)
8047 ]
8048 );
8049
8050 // Refreshing selections will relocate the first selection to the original buffer
8051 // location.
8052 editor.refresh_selections(cx);
8053 assert_eq!(
8054 editor.selected_ranges(cx),
8055 [
8056 Point::new(0, 1)..Point::new(0, 1),
8057 Point::new(0, 3)..Point::new(0, 3)
8058 ]
8059 );
8060 });
8061 }
8062
8063 #[gpui::test]
8064 async fn test_extra_newline_insertion(mut cx: gpui::TestAppContext) {
8065 let settings = cx.read(EditorSettings::test);
8066 let language = Arc::new(Language::new(
8067 LanguageConfig {
8068 brackets: vec![
8069 BracketPair {
8070 start: "{".to_string(),
8071 end: "}".to_string(),
8072 close: true,
8073 newline: true,
8074 },
8075 BracketPair {
8076 start: "/* ".to_string(),
8077 end: " */".to_string(),
8078 close: true,
8079 newline: true,
8080 },
8081 ],
8082 ..Default::default()
8083 },
8084 Some(tree_sitter_rust::language()),
8085 ));
8086
8087 let text = concat!(
8088 "{ }\n", // Suppress rustfmt
8089 " x\n", //
8090 " /* */\n", //
8091 "x\n", //
8092 "{{} }\n", //
8093 );
8094
8095 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8096 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8097 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8098 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
8099 .await;
8100
8101 view.update(&mut cx, |view, cx| {
8102 view.select_display_ranges(
8103 &[
8104 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
8105 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
8106 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
8107 ],
8108 cx,
8109 );
8110 view.newline(&Newline, cx);
8111
8112 assert_eq!(
8113 view.buffer().read(cx).read(cx).text(),
8114 concat!(
8115 "{ \n", // Suppress rustfmt
8116 "\n", //
8117 "}\n", //
8118 " x\n", //
8119 " /* \n", //
8120 " \n", //
8121 " */\n", //
8122 "x\n", //
8123 "{{} \n", //
8124 "}\n", //
8125 )
8126 );
8127 });
8128 }
8129
8130 #[gpui::test]
8131 fn test_highlighted_ranges(cx: &mut gpui::MutableAppContext) {
8132 let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
8133 let settings = EditorSettings::test(&cx);
8134 let (_, editor) = cx.add_window(Default::default(), |cx| {
8135 build_editor(buffer.clone(), settings, cx)
8136 });
8137
8138 editor.update(cx, |editor, cx| {
8139 struct Type1;
8140 struct Type2;
8141
8142 let buffer = buffer.read(cx).snapshot(cx);
8143
8144 let anchor_range = |range: Range<Point>| {
8145 buffer.anchor_after(range.start)..buffer.anchor_after(range.end)
8146 };
8147
8148 editor.highlight_ranges::<Type1>(
8149 vec![
8150 anchor_range(Point::new(2, 1)..Point::new(2, 3)),
8151 anchor_range(Point::new(4, 2)..Point::new(4, 4)),
8152 anchor_range(Point::new(6, 3)..Point::new(6, 5)),
8153 anchor_range(Point::new(8, 4)..Point::new(8, 6)),
8154 ],
8155 Color::red(),
8156 cx,
8157 );
8158 editor.highlight_ranges::<Type2>(
8159 vec![
8160 anchor_range(Point::new(3, 2)..Point::new(3, 5)),
8161 anchor_range(Point::new(5, 3)..Point::new(5, 6)),
8162 anchor_range(Point::new(7, 4)..Point::new(7, 7)),
8163 anchor_range(Point::new(9, 5)..Point::new(9, 8)),
8164 ],
8165 Color::green(),
8166 cx,
8167 );
8168
8169 let snapshot = editor.snapshot(cx);
8170 let mut highlighted_ranges = editor.highlighted_ranges_in_range(
8171 anchor_range(Point::new(3, 4)..Point::new(7, 4)),
8172 &snapshot,
8173 );
8174 // Enforce a consistent ordering based on color without relying on the ordering of the
8175 // highlight's `TypeId` which is non-deterministic.
8176 highlighted_ranges.sort_unstable_by_key(|(_, color)| *color);
8177 assert_eq!(
8178 highlighted_ranges,
8179 &[
8180 (
8181 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 5),
8182 Color::green(),
8183 ),
8184 (
8185 DisplayPoint::new(5, 3)..DisplayPoint::new(5, 6),
8186 Color::green(),
8187 ),
8188 (
8189 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 4),
8190 Color::red(),
8191 ),
8192 (
8193 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
8194 Color::red(),
8195 ),
8196 ]
8197 );
8198 assert_eq!(
8199 editor.highlighted_ranges_in_range(
8200 anchor_range(Point::new(5, 6)..Point::new(6, 4)),
8201 &snapshot,
8202 ),
8203 &[(
8204 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
8205 Color::red(),
8206 )]
8207 );
8208 });
8209 }
8210
8211 #[test]
8212 fn test_combine_syntax_and_fuzzy_match_highlights() {
8213 let string = "abcdefghijklmnop";
8214 let default = HighlightStyle::default();
8215 let syntax_ranges = [
8216 (
8217 0..3,
8218 HighlightStyle {
8219 color: Color::red(),
8220 ..default
8221 },
8222 ),
8223 (
8224 4..8,
8225 HighlightStyle {
8226 color: Color::green(),
8227 ..default
8228 },
8229 ),
8230 ];
8231 let match_indices = [4, 6, 7, 8];
8232 assert_eq!(
8233 combine_syntax_and_fuzzy_match_highlights(
8234 &string,
8235 default,
8236 syntax_ranges.into_iter(),
8237 &match_indices,
8238 ),
8239 &[
8240 (
8241 0..3,
8242 HighlightStyle {
8243 color: Color::red(),
8244 ..default
8245 },
8246 ),
8247 (
8248 4..5,
8249 HighlightStyle {
8250 color: Color::green(),
8251 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
8252 ..default
8253 },
8254 ),
8255 (
8256 5..6,
8257 HighlightStyle {
8258 color: Color::green(),
8259 ..default
8260 },
8261 ),
8262 (
8263 6..8,
8264 HighlightStyle {
8265 color: Color::green(),
8266 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
8267 ..default
8268 },
8269 ),
8270 (
8271 8..9,
8272 HighlightStyle {
8273 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
8274 ..default
8275 },
8276 ),
8277 ]
8278 );
8279 }
8280
8281 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
8282 let point = DisplayPoint::new(row as u32, column as u32);
8283 point..point
8284 }
8285
8286 fn build_editor(
8287 buffer: ModelHandle<MultiBuffer>,
8288 settings: EditorSettings,
8289 cx: &mut ViewContext<Editor>,
8290 ) -> Editor {
8291 Editor::for_buffer(buffer, Arc::new(move |_| settings.clone()), None, cx)
8292 }
8293}
8294
8295trait RangeExt<T> {
8296 fn sorted(&self) -> Range<T>;
8297 fn to_inclusive(&self) -> RangeInclusive<T>;
8298}
8299
8300impl<T: Ord + Clone> RangeExt<T> for Range<T> {
8301 fn sorted(&self) -> Self {
8302 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
8303 }
8304
8305 fn to_inclusive(&self) -> RangeInclusive<T> {
8306 self.start.clone()..=self.end.clone()
8307 }
8308}