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.push_transaction(&project_transaction.0);
2141 multibuffer
2142 });
2143
2144 workspace.update(&mut cx, |workspace, cx| {
2145 let editor = workspace.open_item(MultiBufferItemHandle(excerpt_buffer), cx);
2146 if let Some(editor) = editor.act_as::<Self>(cx) {
2147 editor.update(cx, |editor, cx| {
2148 let settings = (editor.build_settings)(cx);
2149 editor.highlight_ranges::<Self>(
2150 ranges_to_highlight,
2151 settings.style.highlighted_line_background,
2152 cx,
2153 );
2154 });
2155 }
2156 });
2157
2158 Ok(())
2159 }))
2160 }
2161
2162 pub fn showing_context_menu(&self) -> bool {
2163 self.context_menu
2164 .as_ref()
2165 .map_or(false, |menu| menu.visible())
2166 }
2167
2168 pub fn render_context_menu(&self, cx: &AppContext) -> Option<ElementBox> {
2169 self.context_menu
2170 .as_ref()
2171 .map(|menu| menu.render(self.build_settings.clone(), cx))
2172 }
2173
2174 fn show_context_menu(&mut self, menu: ContextMenu, cx: &mut ViewContext<Self>) {
2175 if !matches!(menu, ContextMenu::Completions(_)) {
2176 self.completion_tasks.clear();
2177 }
2178 self.context_menu = Some(menu);
2179 cx.notify()
2180 }
2181
2182 fn hide_context_menu(&mut self, cx: &mut ViewContext<Self>) -> Option<ContextMenu> {
2183 cx.notify();
2184 self.completion_tasks.clear();
2185 self.context_menu.take()
2186 }
2187
2188 pub fn insert_snippet(
2189 &mut self,
2190 insertion_ranges: &[Range<usize>],
2191 snippet: Snippet,
2192 cx: &mut ViewContext<Self>,
2193 ) -> Result<()> {
2194 let tabstops = self.buffer.update(cx, |buffer, cx| {
2195 buffer.edit_with_autoindent(insertion_ranges.iter().cloned(), &snippet.text, cx);
2196
2197 let snapshot = &*buffer.read(cx);
2198 let snippet = &snippet;
2199 snippet
2200 .tabstops
2201 .iter()
2202 .map(|tabstop| {
2203 let mut tabstop_ranges = tabstop
2204 .iter()
2205 .flat_map(|tabstop_range| {
2206 let mut delta = 0 as isize;
2207 insertion_ranges.iter().map(move |insertion_range| {
2208 let insertion_start = insertion_range.start as isize + delta;
2209 delta +=
2210 snippet.text.len() as isize - insertion_range.len() as isize;
2211
2212 let start = snapshot.anchor_before(
2213 (insertion_start + tabstop_range.start) as usize,
2214 );
2215 let end = snapshot
2216 .anchor_after((insertion_start + tabstop_range.end) as usize);
2217 start..end
2218 })
2219 })
2220 .collect::<Vec<_>>();
2221 tabstop_ranges
2222 .sort_unstable_by(|a, b| a.start.cmp(&b.start, snapshot).unwrap());
2223 tabstop_ranges
2224 })
2225 .collect::<Vec<_>>()
2226 });
2227
2228 if let Some(tabstop) = tabstops.first() {
2229 self.select_ranges(tabstop.iter().cloned(), Some(Autoscroll::Fit), cx);
2230 self.snippet_stack.push(SnippetState {
2231 active_index: 0,
2232 ranges: tabstops,
2233 });
2234 }
2235
2236 Ok(())
2237 }
2238
2239 pub fn move_to_next_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) -> bool {
2240 self.move_to_snippet_tabstop(Bias::Right, cx)
2241 }
2242
2243 pub fn move_to_prev_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) {
2244 self.move_to_snippet_tabstop(Bias::Left, cx);
2245 }
2246
2247 pub fn move_to_snippet_tabstop(&mut self, bias: Bias, cx: &mut ViewContext<Self>) -> bool {
2248 let buffer = self.buffer.read(cx).snapshot(cx);
2249
2250 if let Some(snippet) = self.snippet_stack.last_mut() {
2251 match bias {
2252 Bias::Left => {
2253 if snippet.active_index > 0 {
2254 snippet.active_index -= 1;
2255 } else {
2256 return false;
2257 }
2258 }
2259 Bias::Right => {
2260 if snippet.active_index + 1 < snippet.ranges.len() {
2261 snippet.active_index += 1;
2262 } else {
2263 return false;
2264 }
2265 }
2266 }
2267 if let Some(current_ranges) = snippet.ranges.get(snippet.active_index) {
2268 let new_selections = current_ranges
2269 .iter()
2270 .map(|new_range| {
2271 let new_range = new_range.to_offset(&buffer);
2272 Selection {
2273 id: post_inc(&mut self.next_selection_id),
2274 start: new_range.start,
2275 end: new_range.end,
2276 reversed: false,
2277 goal: SelectionGoal::None,
2278 }
2279 })
2280 .collect();
2281
2282 // Remove the snippet state when moving to the last tabstop.
2283 if snippet.active_index + 1 == snippet.ranges.len() {
2284 self.snippet_stack.pop();
2285 }
2286
2287 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2288 return true;
2289 }
2290 self.snippet_stack.pop();
2291 }
2292
2293 false
2294 }
2295
2296 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
2297 self.start_transaction(cx);
2298 self.select_all(&SelectAll, cx);
2299 self.insert("", cx);
2300 self.end_transaction(cx);
2301 }
2302
2303 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
2304 self.start_transaction(cx);
2305 let mut selections = self.local_selections::<Point>(cx);
2306 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2307 for selection in &mut selections {
2308 if selection.is_empty() {
2309 let head = selection.head().to_display_point(&display_map);
2310 let cursor = movement::left(&display_map, head)
2311 .unwrap()
2312 .to_point(&display_map);
2313 selection.set_head(cursor);
2314 selection.goal = SelectionGoal::None;
2315 }
2316 }
2317 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2318 self.insert("", cx);
2319 self.end_transaction(cx);
2320 }
2321
2322 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
2323 self.start_transaction(cx);
2324 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2325 let mut selections = self.local_selections::<Point>(cx);
2326 for selection in &mut selections {
2327 if selection.is_empty() {
2328 let head = selection.head().to_display_point(&display_map);
2329 let cursor = movement::right(&display_map, head)
2330 .unwrap()
2331 .to_point(&display_map);
2332 selection.set_head(cursor);
2333 selection.goal = SelectionGoal::None;
2334 }
2335 }
2336 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2337 self.insert(&"", cx);
2338 self.end_transaction(cx);
2339 }
2340
2341 pub fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
2342 if self.move_to_next_snippet_tabstop(cx) {
2343 return;
2344 }
2345
2346 self.start_transaction(cx);
2347 let tab_size = (self.build_settings)(cx).tab_size;
2348 let mut selections = self.local_selections::<Point>(cx);
2349 let mut last_indent = None;
2350 self.buffer.update(cx, |buffer, cx| {
2351 for selection in &mut selections {
2352 if selection.is_empty() {
2353 let char_column = buffer
2354 .read(cx)
2355 .text_for_range(Point::new(selection.start.row, 0)..selection.start)
2356 .flat_map(str::chars)
2357 .count();
2358 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
2359 buffer.edit(
2360 [selection.start..selection.start],
2361 " ".repeat(chars_to_next_tab_stop),
2362 cx,
2363 );
2364 selection.start.column += chars_to_next_tab_stop as u32;
2365 selection.end = selection.start;
2366 } else {
2367 let mut start_row = selection.start.row;
2368 let mut end_row = selection.end.row + 1;
2369
2370 // If a selection ends at the beginning of a line, don't indent
2371 // that last line.
2372 if selection.end.column == 0 {
2373 end_row -= 1;
2374 }
2375
2376 // Avoid re-indenting a row that has already been indented by a
2377 // previous selection, but still update this selection's column
2378 // to reflect that indentation.
2379 if let Some((last_indent_row, last_indent_len)) = last_indent {
2380 if last_indent_row == selection.start.row {
2381 selection.start.column += last_indent_len;
2382 start_row += 1;
2383 }
2384 if last_indent_row == selection.end.row {
2385 selection.end.column += last_indent_len;
2386 }
2387 }
2388
2389 for row in start_row..end_row {
2390 let indent_column = buffer.read(cx).indent_column_for_line(row) as usize;
2391 let columns_to_next_tab_stop = tab_size - (indent_column % tab_size);
2392 let row_start = Point::new(row, 0);
2393 buffer.edit(
2394 [row_start..row_start],
2395 " ".repeat(columns_to_next_tab_stop),
2396 cx,
2397 );
2398
2399 // Update this selection's endpoints to reflect the indentation.
2400 if row == selection.start.row {
2401 selection.start.column += columns_to_next_tab_stop as u32;
2402 }
2403 if row == selection.end.row {
2404 selection.end.column += columns_to_next_tab_stop as u32;
2405 }
2406
2407 last_indent = Some((row, columns_to_next_tab_stop as u32));
2408 }
2409 }
2410 }
2411 });
2412
2413 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2414 self.end_transaction(cx);
2415 }
2416
2417 pub fn outdent(&mut self, _: &Outdent, cx: &mut ViewContext<Self>) {
2418 if !self.snippet_stack.is_empty() {
2419 self.move_to_prev_snippet_tabstop(cx);
2420 return;
2421 }
2422
2423 self.start_transaction(cx);
2424 let tab_size = (self.build_settings)(cx).tab_size;
2425 let selections = self.local_selections::<Point>(cx);
2426 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2427 let mut deletion_ranges = Vec::new();
2428 let mut last_outdent = None;
2429 {
2430 let buffer = self.buffer.read(cx).read(cx);
2431 for selection in &selections {
2432 let mut rows = selection.spanned_rows(false, &display_map);
2433
2434 // Avoid re-outdenting a row that has already been outdented by a
2435 // previous selection.
2436 if let Some(last_row) = last_outdent {
2437 if last_row == rows.start {
2438 rows.start += 1;
2439 }
2440 }
2441
2442 for row in rows {
2443 let column = buffer.indent_column_for_line(row) as usize;
2444 if column > 0 {
2445 let mut deletion_len = (column % tab_size) as u32;
2446 if deletion_len == 0 {
2447 deletion_len = tab_size as u32;
2448 }
2449 deletion_ranges.push(Point::new(row, 0)..Point::new(row, deletion_len));
2450 last_outdent = Some(row);
2451 }
2452 }
2453 }
2454 }
2455 self.buffer.update(cx, |buffer, cx| {
2456 buffer.edit(deletion_ranges, "", cx);
2457 });
2458
2459 self.update_selections(
2460 self.local_selections::<usize>(cx),
2461 Some(Autoscroll::Fit),
2462 cx,
2463 );
2464 self.end_transaction(cx);
2465 }
2466
2467 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
2468 self.start_transaction(cx);
2469
2470 let selections = self.local_selections::<Point>(cx);
2471 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2472 let buffer = self.buffer.read(cx).snapshot(cx);
2473
2474 let mut new_cursors = Vec::new();
2475 let mut edit_ranges = Vec::new();
2476 let mut selections = selections.iter().peekable();
2477 while let Some(selection) = selections.next() {
2478 let mut rows = selection.spanned_rows(false, &display_map);
2479 let goal_display_column = selection.head().to_display_point(&display_map).column();
2480
2481 // Accumulate contiguous regions of rows that we want to delete.
2482 while let Some(next_selection) = selections.peek() {
2483 let next_rows = next_selection.spanned_rows(false, &display_map);
2484 if next_rows.start <= rows.end {
2485 rows.end = next_rows.end;
2486 selections.next().unwrap();
2487 } else {
2488 break;
2489 }
2490 }
2491
2492 let mut edit_start = Point::new(rows.start, 0).to_offset(&buffer);
2493 let edit_end;
2494 let cursor_buffer_row;
2495 if buffer.max_point().row >= rows.end {
2496 // If there's a line after the range, delete the \n from the end of the row range
2497 // and position the cursor on the next line.
2498 edit_end = Point::new(rows.end, 0).to_offset(&buffer);
2499 cursor_buffer_row = rows.end;
2500 } else {
2501 // If there isn't a line after the range, delete the \n from the line before the
2502 // start of the row range and position the cursor there.
2503 edit_start = edit_start.saturating_sub(1);
2504 edit_end = buffer.len();
2505 cursor_buffer_row = rows.start.saturating_sub(1);
2506 }
2507
2508 let mut cursor = Point::new(cursor_buffer_row, 0).to_display_point(&display_map);
2509 *cursor.column_mut() =
2510 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
2511
2512 new_cursors.push((
2513 selection.id,
2514 buffer.anchor_after(cursor.to_point(&display_map)),
2515 ));
2516 edit_ranges.push(edit_start..edit_end);
2517 }
2518
2519 let buffer = self.buffer.update(cx, |buffer, cx| {
2520 buffer.edit(edit_ranges, "", cx);
2521 buffer.snapshot(cx)
2522 });
2523 let new_selections = new_cursors
2524 .into_iter()
2525 .map(|(id, cursor)| {
2526 let cursor = cursor.to_point(&buffer);
2527 Selection {
2528 id,
2529 start: cursor,
2530 end: cursor,
2531 reversed: false,
2532 goal: SelectionGoal::None,
2533 }
2534 })
2535 .collect();
2536 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2537 self.end_transaction(cx);
2538 }
2539
2540 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
2541 self.start_transaction(cx);
2542
2543 let selections = self.local_selections::<Point>(cx);
2544 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2545 let buffer = &display_map.buffer_snapshot;
2546
2547 let mut edits = Vec::new();
2548 let mut selections_iter = selections.iter().peekable();
2549 while let Some(selection) = selections_iter.next() {
2550 // Avoid duplicating the same lines twice.
2551 let mut rows = selection.spanned_rows(false, &display_map);
2552
2553 while let Some(next_selection) = selections_iter.peek() {
2554 let next_rows = next_selection.spanned_rows(false, &display_map);
2555 if next_rows.start <= rows.end - 1 {
2556 rows.end = next_rows.end;
2557 selections_iter.next().unwrap();
2558 } else {
2559 break;
2560 }
2561 }
2562
2563 // Copy the text from the selected row region and splice it at the start of the region.
2564 let start = Point::new(rows.start, 0);
2565 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
2566 let text = buffer
2567 .text_for_range(start..end)
2568 .chain(Some("\n"))
2569 .collect::<String>();
2570 edits.push((start, text, rows.len() as u32));
2571 }
2572
2573 self.buffer.update(cx, |buffer, cx| {
2574 for (point, text, _) in edits.into_iter().rev() {
2575 buffer.edit(Some(point..point), text, cx);
2576 }
2577 });
2578
2579 self.request_autoscroll(Autoscroll::Fit, cx);
2580 self.end_transaction(cx);
2581 }
2582
2583 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
2584 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2585 let buffer = self.buffer.read(cx).snapshot(cx);
2586
2587 let mut edits = Vec::new();
2588 let mut unfold_ranges = Vec::new();
2589 let mut refold_ranges = Vec::new();
2590
2591 let selections = self.local_selections::<Point>(cx);
2592 let mut selections = selections.iter().peekable();
2593 let mut contiguous_row_selections = Vec::new();
2594 let mut new_selections = Vec::new();
2595
2596 while let Some(selection) = selections.next() {
2597 // Find all the selections that span a contiguous row range
2598 contiguous_row_selections.push(selection.clone());
2599 let start_row = selection.start.row;
2600 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
2601 display_map.next_line_boundary(selection.end).0.row + 1
2602 } else {
2603 selection.end.row
2604 };
2605
2606 while let Some(next_selection) = selections.peek() {
2607 if next_selection.start.row <= end_row {
2608 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
2609 display_map.next_line_boundary(next_selection.end).0.row + 1
2610 } else {
2611 next_selection.end.row
2612 };
2613 contiguous_row_selections.push(selections.next().unwrap().clone());
2614 } else {
2615 break;
2616 }
2617 }
2618
2619 // Move the text spanned by the row range to be before the line preceding the row range
2620 if start_row > 0 {
2621 let range_to_move = Point::new(start_row - 1, buffer.line_len(start_row - 1))
2622 ..Point::new(end_row - 1, buffer.line_len(end_row - 1));
2623 let insertion_point = display_map
2624 .prev_line_boundary(Point::new(start_row - 1, 0))
2625 .0;
2626
2627 // Don't move lines across excerpts
2628 if buffer
2629 .excerpt_boundaries_in_range((
2630 Bound::Excluded(insertion_point),
2631 Bound::Included(range_to_move.end),
2632 ))
2633 .next()
2634 .is_none()
2635 {
2636 let text = buffer
2637 .text_for_range(range_to_move.clone())
2638 .flat_map(|s| s.chars())
2639 .skip(1)
2640 .chain(['\n'])
2641 .collect::<String>();
2642
2643 edits.push((
2644 buffer.anchor_after(range_to_move.start)
2645 ..buffer.anchor_before(range_to_move.end),
2646 String::new(),
2647 ));
2648 let insertion_anchor = buffer.anchor_after(insertion_point);
2649 edits.push((insertion_anchor.clone()..insertion_anchor, text));
2650
2651 let row_delta = range_to_move.start.row - insertion_point.row + 1;
2652
2653 // Move selections up
2654 new_selections.extend(contiguous_row_selections.drain(..).map(
2655 |mut selection| {
2656 selection.start.row -= row_delta;
2657 selection.end.row -= row_delta;
2658 selection
2659 },
2660 ));
2661
2662 // Move folds up
2663 unfold_ranges.push(range_to_move.clone());
2664 for fold in display_map.folds_in_range(
2665 buffer.anchor_before(range_to_move.start)
2666 ..buffer.anchor_after(range_to_move.end),
2667 ) {
2668 let mut start = fold.start.to_point(&buffer);
2669 let mut end = fold.end.to_point(&buffer);
2670 start.row -= row_delta;
2671 end.row -= row_delta;
2672 refold_ranges.push(start..end);
2673 }
2674 }
2675 }
2676
2677 // If we didn't move line(s), preserve the existing selections
2678 new_selections.extend(contiguous_row_selections.drain(..));
2679 }
2680
2681 self.start_transaction(cx);
2682 self.unfold_ranges(unfold_ranges, cx);
2683 self.buffer.update(cx, |buffer, cx| {
2684 for (range, text) in edits {
2685 buffer.edit([range], text, cx);
2686 }
2687 });
2688 self.fold_ranges(refold_ranges, cx);
2689 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2690 self.end_transaction(cx);
2691 }
2692
2693 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
2694 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2695 let buffer = self.buffer.read(cx).snapshot(cx);
2696
2697 let mut edits = Vec::new();
2698 let mut unfold_ranges = Vec::new();
2699 let mut refold_ranges = Vec::new();
2700
2701 let selections = self.local_selections::<Point>(cx);
2702 let mut selections = selections.iter().peekable();
2703 let mut contiguous_row_selections = Vec::new();
2704 let mut new_selections = Vec::new();
2705
2706 while let Some(selection) = selections.next() {
2707 // Find all the selections that span a contiguous row range
2708 contiguous_row_selections.push(selection.clone());
2709 let start_row = selection.start.row;
2710 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
2711 display_map.next_line_boundary(selection.end).0.row + 1
2712 } else {
2713 selection.end.row
2714 };
2715
2716 while let Some(next_selection) = selections.peek() {
2717 if next_selection.start.row <= end_row {
2718 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
2719 display_map.next_line_boundary(next_selection.end).0.row + 1
2720 } else {
2721 next_selection.end.row
2722 };
2723 contiguous_row_selections.push(selections.next().unwrap().clone());
2724 } else {
2725 break;
2726 }
2727 }
2728
2729 // Move the text spanned by the row range to be after the last line of the row range
2730 if end_row <= buffer.max_point().row {
2731 let range_to_move = Point::new(start_row, 0)..Point::new(end_row, 0);
2732 let insertion_point = display_map.next_line_boundary(Point::new(end_row, 0)).0;
2733
2734 // Don't move lines across excerpt boundaries
2735 if buffer
2736 .excerpt_boundaries_in_range((
2737 Bound::Excluded(range_to_move.start),
2738 Bound::Included(insertion_point),
2739 ))
2740 .next()
2741 .is_none()
2742 {
2743 let mut text = String::from("\n");
2744 text.extend(buffer.text_for_range(range_to_move.clone()));
2745 text.pop(); // Drop trailing newline
2746 edits.push((
2747 buffer.anchor_after(range_to_move.start)
2748 ..buffer.anchor_before(range_to_move.end),
2749 String::new(),
2750 ));
2751 let insertion_anchor = buffer.anchor_after(insertion_point);
2752 edits.push((insertion_anchor.clone()..insertion_anchor, text));
2753
2754 let row_delta = insertion_point.row - range_to_move.end.row + 1;
2755
2756 // Move selections down
2757 new_selections.extend(contiguous_row_selections.drain(..).map(
2758 |mut selection| {
2759 selection.start.row += row_delta;
2760 selection.end.row += row_delta;
2761 selection
2762 },
2763 ));
2764
2765 // Move folds down
2766 unfold_ranges.push(range_to_move.clone());
2767 for fold in display_map.folds_in_range(
2768 buffer.anchor_before(range_to_move.start)
2769 ..buffer.anchor_after(range_to_move.end),
2770 ) {
2771 let mut start = fold.start.to_point(&buffer);
2772 let mut end = fold.end.to_point(&buffer);
2773 start.row += row_delta;
2774 end.row += row_delta;
2775 refold_ranges.push(start..end);
2776 }
2777 }
2778 }
2779
2780 // If we didn't move line(s), preserve the existing selections
2781 new_selections.extend(contiguous_row_selections.drain(..));
2782 }
2783
2784 self.start_transaction(cx);
2785 self.unfold_ranges(unfold_ranges, cx);
2786 self.buffer.update(cx, |buffer, cx| {
2787 for (range, text) in edits {
2788 buffer.edit([range], text, cx);
2789 }
2790 });
2791 self.fold_ranges(refold_ranges, cx);
2792 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2793 self.end_transaction(cx);
2794 }
2795
2796 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
2797 self.start_transaction(cx);
2798 let mut text = String::new();
2799 let mut selections = self.local_selections::<Point>(cx);
2800 let mut clipboard_selections = Vec::with_capacity(selections.len());
2801 {
2802 let buffer = self.buffer.read(cx).read(cx);
2803 let max_point = buffer.max_point();
2804 for selection in &mut selections {
2805 let is_entire_line = selection.is_empty();
2806 if is_entire_line {
2807 selection.start = Point::new(selection.start.row, 0);
2808 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
2809 selection.goal = SelectionGoal::None;
2810 }
2811 let mut len = 0;
2812 for chunk in buffer.text_for_range(selection.start..selection.end) {
2813 text.push_str(chunk);
2814 len += chunk.len();
2815 }
2816 clipboard_selections.push(ClipboardSelection {
2817 len,
2818 is_entire_line,
2819 });
2820 }
2821 }
2822 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2823 self.insert("", cx);
2824 self.end_transaction(cx);
2825
2826 cx.as_mut()
2827 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
2828 }
2829
2830 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
2831 let selections = self.local_selections::<Point>(cx);
2832 let mut text = String::new();
2833 let mut clipboard_selections = Vec::with_capacity(selections.len());
2834 {
2835 let buffer = self.buffer.read(cx).read(cx);
2836 let max_point = buffer.max_point();
2837 for selection in selections.iter() {
2838 let mut start = selection.start;
2839 let mut end = selection.end;
2840 let is_entire_line = selection.is_empty();
2841 if is_entire_line {
2842 start = Point::new(start.row, 0);
2843 end = cmp::min(max_point, Point::new(start.row + 1, 0));
2844 }
2845 let mut len = 0;
2846 for chunk in buffer.text_for_range(start..end) {
2847 text.push_str(chunk);
2848 len += chunk.len();
2849 }
2850 clipboard_selections.push(ClipboardSelection {
2851 len,
2852 is_entire_line,
2853 });
2854 }
2855 }
2856
2857 cx.as_mut()
2858 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
2859 }
2860
2861 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
2862 if let Some(item) = cx.as_mut().read_from_clipboard() {
2863 let clipboard_text = item.text();
2864 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
2865 let mut selections = self.local_selections::<usize>(cx);
2866 let all_selections_were_entire_line =
2867 clipboard_selections.iter().all(|s| s.is_entire_line);
2868 if clipboard_selections.len() != selections.len() {
2869 clipboard_selections.clear();
2870 }
2871
2872 let mut delta = 0_isize;
2873 let mut start_offset = 0;
2874 for (i, selection) in selections.iter_mut().enumerate() {
2875 let to_insert;
2876 let entire_line;
2877 if let Some(clipboard_selection) = clipboard_selections.get(i) {
2878 let end_offset = start_offset + clipboard_selection.len;
2879 to_insert = &clipboard_text[start_offset..end_offset];
2880 entire_line = clipboard_selection.is_entire_line;
2881 start_offset = end_offset
2882 } else {
2883 to_insert = clipboard_text.as_str();
2884 entire_line = all_selections_were_entire_line;
2885 }
2886
2887 selection.start = (selection.start as isize + delta) as usize;
2888 selection.end = (selection.end as isize + delta) as usize;
2889
2890 self.buffer.update(cx, |buffer, cx| {
2891 // If the corresponding selection was empty when this slice of the
2892 // clipboard text was written, then the entire line containing the
2893 // selection was copied. If this selection is also currently empty,
2894 // then paste the line before the current line of the buffer.
2895 let range = if selection.is_empty() && entire_line {
2896 let column = selection.start.to_point(&buffer.read(cx)).column as usize;
2897 let line_start = selection.start - column;
2898 line_start..line_start
2899 } else {
2900 selection.start..selection.end
2901 };
2902
2903 delta += to_insert.len() as isize - range.len() as isize;
2904 buffer.edit([range], to_insert, cx);
2905 selection.start += to_insert.len();
2906 selection.end = selection.start;
2907 });
2908 }
2909 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2910 } else {
2911 self.insert(clipboard_text, cx);
2912 }
2913 }
2914 }
2915
2916 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
2917 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
2918 if let Some((selections, _)) = self.selection_history.get(&tx_id).cloned() {
2919 self.set_selections(selections, cx);
2920 }
2921 self.request_autoscroll(Autoscroll::Fit, cx);
2922 }
2923 }
2924
2925 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
2926 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
2927 if let Some((_, Some(selections))) = self.selection_history.get(&tx_id).cloned() {
2928 self.set_selections(selections, cx);
2929 }
2930 self.request_autoscroll(Autoscroll::Fit, cx);
2931 }
2932 }
2933
2934 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
2935 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2936 let mut selections = self.local_selections::<Point>(cx);
2937 for selection in &mut selections {
2938 let start = selection.start.to_display_point(&display_map);
2939 let end = selection.end.to_display_point(&display_map);
2940
2941 if start != end {
2942 selection.end = selection.start.clone();
2943 } else {
2944 let cursor = movement::left(&display_map, start)
2945 .unwrap()
2946 .to_point(&display_map);
2947 selection.start = cursor.clone();
2948 selection.end = cursor;
2949 }
2950 selection.reversed = false;
2951 selection.goal = SelectionGoal::None;
2952 }
2953 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2954 }
2955
2956 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
2957 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2958 let mut selections = self.local_selections::<Point>(cx);
2959 for selection in &mut selections {
2960 let head = selection.head().to_display_point(&display_map);
2961 let cursor = movement::left(&display_map, head)
2962 .unwrap()
2963 .to_point(&display_map);
2964 selection.set_head(cursor);
2965 selection.goal = SelectionGoal::None;
2966 }
2967 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2968 }
2969
2970 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
2971 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2972 let mut selections = self.local_selections::<Point>(cx);
2973 for selection in &mut selections {
2974 let start = selection.start.to_display_point(&display_map);
2975 let end = selection.end.to_display_point(&display_map);
2976
2977 if start != end {
2978 selection.start = selection.end.clone();
2979 } else {
2980 let cursor = movement::right(&display_map, end)
2981 .unwrap()
2982 .to_point(&display_map);
2983 selection.start = cursor;
2984 selection.end = cursor;
2985 }
2986 selection.reversed = false;
2987 selection.goal = SelectionGoal::None;
2988 }
2989 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2990 }
2991
2992 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
2993 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2994 let mut selections = self.local_selections::<Point>(cx);
2995 for selection in &mut selections {
2996 let head = selection.head().to_display_point(&display_map);
2997 let cursor = movement::right(&display_map, head)
2998 .unwrap()
2999 .to_point(&display_map);
3000 selection.set_head(cursor);
3001 selection.goal = SelectionGoal::None;
3002 }
3003 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3004 }
3005
3006 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
3007 if let Some(context_menu) = self.context_menu.as_mut() {
3008 if context_menu.select_prev(cx) {
3009 return;
3010 }
3011 }
3012
3013 if matches!(self.mode, EditorMode::SingleLine) {
3014 cx.propagate_action();
3015 return;
3016 }
3017
3018 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3019 let mut selections = self.local_selections::<Point>(cx);
3020 for selection in &mut selections {
3021 let start = selection.start.to_display_point(&display_map);
3022 let end = selection.end.to_display_point(&display_map);
3023 if start != end {
3024 selection.goal = SelectionGoal::None;
3025 }
3026
3027 let (start, goal) = movement::up(&display_map, start, selection.goal).unwrap();
3028 let cursor = start.to_point(&display_map);
3029 selection.start = cursor;
3030 selection.end = cursor;
3031 selection.goal = goal;
3032 selection.reversed = false;
3033 }
3034 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3035 }
3036
3037 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
3038 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3039 let mut selections = self.local_selections::<Point>(cx);
3040 for selection in &mut selections {
3041 let head = selection.head().to_display_point(&display_map);
3042 let (head, goal) = movement::up(&display_map, head, selection.goal).unwrap();
3043 let cursor = head.to_point(&display_map);
3044 selection.set_head(cursor);
3045 selection.goal = goal;
3046 }
3047 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3048 }
3049
3050 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
3051 if let Some(context_menu) = self.context_menu.as_mut() {
3052 if context_menu.select_next(cx) {
3053 return;
3054 }
3055 }
3056
3057 if matches!(self.mode, EditorMode::SingleLine) {
3058 cx.propagate_action();
3059 return;
3060 }
3061
3062 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3063 let mut selections = self.local_selections::<Point>(cx);
3064 for selection in &mut selections {
3065 let start = selection.start.to_display_point(&display_map);
3066 let end = selection.end.to_display_point(&display_map);
3067 if start != end {
3068 selection.goal = SelectionGoal::None;
3069 }
3070
3071 let (start, goal) = movement::down(&display_map, end, selection.goal).unwrap();
3072 let cursor = start.to_point(&display_map);
3073 selection.start = cursor;
3074 selection.end = cursor;
3075 selection.goal = goal;
3076 selection.reversed = false;
3077 }
3078 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3079 }
3080
3081 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
3082 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3083 let mut selections = self.local_selections::<Point>(cx);
3084 for selection in &mut selections {
3085 let head = selection.head().to_display_point(&display_map);
3086 let (head, goal) = movement::down(&display_map, head, selection.goal).unwrap();
3087 let cursor = head.to_point(&display_map);
3088 selection.set_head(cursor);
3089 selection.goal = goal;
3090 }
3091 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3092 }
3093
3094 pub fn move_to_previous_word_boundary(
3095 &mut self,
3096 _: &MoveToPreviousWordBoundary,
3097 cx: &mut ViewContext<Self>,
3098 ) {
3099 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3100 let mut selections = self.local_selections::<Point>(cx);
3101 for selection in &mut selections {
3102 let head = selection.head().to_display_point(&display_map);
3103 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3104 selection.start = cursor.clone();
3105 selection.end = cursor;
3106 selection.reversed = false;
3107 selection.goal = SelectionGoal::None;
3108 }
3109 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3110 }
3111
3112 pub fn select_to_previous_word_boundary(
3113 &mut self,
3114 _: &SelectToPreviousWordBoundary,
3115 cx: &mut ViewContext<Self>,
3116 ) {
3117 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3118 let mut selections = self.local_selections::<Point>(cx);
3119 for selection in &mut selections {
3120 let head = selection.head().to_display_point(&display_map);
3121 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3122 selection.set_head(cursor);
3123 selection.goal = SelectionGoal::None;
3124 }
3125 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3126 }
3127
3128 pub fn delete_to_previous_word_boundary(
3129 &mut self,
3130 _: &DeleteToPreviousWordBoundary,
3131 cx: &mut ViewContext<Self>,
3132 ) {
3133 self.start_transaction(cx);
3134 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3135 let mut selections = self.local_selections::<Point>(cx);
3136 for selection in &mut selections {
3137 if selection.is_empty() {
3138 let head = selection.head().to_display_point(&display_map);
3139 let cursor =
3140 movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3141 selection.set_head(cursor);
3142 selection.goal = SelectionGoal::None;
3143 }
3144 }
3145 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3146 self.insert("", cx);
3147 self.end_transaction(cx);
3148 }
3149
3150 pub fn move_to_next_word_boundary(
3151 &mut self,
3152 _: &MoveToNextWordBoundary,
3153 cx: &mut ViewContext<Self>,
3154 ) {
3155 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3156 let mut selections = self.local_selections::<Point>(cx);
3157 for selection in &mut selections {
3158 let head = selection.head().to_display_point(&display_map);
3159 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
3160 selection.start = cursor;
3161 selection.end = cursor;
3162 selection.reversed = false;
3163 selection.goal = SelectionGoal::None;
3164 }
3165 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3166 }
3167
3168 pub fn select_to_next_word_boundary(
3169 &mut self,
3170 _: &SelectToNextWordBoundary,
3171 cx: &mut ViewContext<Self>,
3172 ) {
3173 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3174 let mut selections = self.local_selections::<Point>(cx);
3175 for selection in &mut selections {
3176 let head = selection.head().to_display_point(&display_map);
3177 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
3178 selection.set_head(cursor);
3179 selection.goal = SelectionGoal::None;
3180 }
3181 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3182 }
3183
3184 pub fn delete_to_next_word_boundary(
3185 &mut self,
3186 _: &DeleteToNextWordBoundary,
3187 cx: &mut ViewContext<Self>,
3188 ) {
3189 self.start_transaction(cx);
3190 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3191 let mut selections = self.local_selections::<Point>(cx);
3192 for selection in &mut selections {
3193 if selection.is_empty() {
3194 let head = selection.head().to_display_point(&display_map);
3195 let cursor =
3196 movement::next_word_boundary(&display_map, head).to_point(&display_map);
3197 selection.set_head(cursor);
3198 selection.goal = SelectionGoal::None;
3199 }
3200 }
3201 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3202 self.insert("", cx);
3203 self.end_transaction(cx);
3204 }
3205
3206 pub fn move_to_beginning_of_line(
3207 &mut self,
3208 _: &MoveToBeginningOfLine,
3209 cx: &mut ViewContext<Self>,
3210 ) {
3211 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3212 let mut selections = self.local_selections::<Point>(cx);
3213 for selection in &mut selections {
3214 let head = selection.head().to_display_point(&display_map);
3215 let new_head = movement::line_beginning(&display_map, head, true);
3216 let cursor = new_head.to_point(&display_map);
3217 selection.start = cursor;
3218 selection.end = cursor;
3219 selection.reversed = false;
3220 selection.goal = SelectionGoal::None;
3221 }
3222 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3223 }
3224
3225 pub fn select_to_beginning_of_line(
3226 &mut self,
3227 SelectToBeginningOfLine(stop_at_soft_boundaries): &SelectToBeginningOfLine,
3228 cx: &mut ViewContext<Self>,
3229 ) {
3230 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3231 let mut selections = self.local_selections::<Point>(cx);
3232 for selection in &mut selections {
3233 let head = selection.head().to_display_point(&display_map);
3234 let new_head = movement::line_beginning(&display_map, head, *stop_at_soft_boundaries);
3235 selection.set_head(new_head.to_point(&display_map));
3236 selection.goal = SelectionGoal::None;
3237 }
3238 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3239 }
3240
3241 pub fn delete_to_beginning_of_line(
3242 &mut self,
3243 _: &DeleteToBeginningOfLine,
3244 cx: &mut ViewContext<Self>,
3245 ) {
3246 self.start_transaction(cx);
3247 self.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
3248 self.backspace(&Backspace, cx);
3249 self.end_transaction(cx);
3250 }
3251
3252 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
3253 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3254 let mut selections = self.local_selections::<Point>(cx);
3255 {
3256 for selection in &mut selections {
3257 let head = selection.head().to_display_point(&display_map);
3258 let new_head = movement::line_end(&display_map, head, true);
3259 let anchor = new_head.to_point(&display_map);
3260 selection.start = anchor.clone();
3261 selection.end = anchor;
3262 selection.reversed = false;
3263 selection.goal = SelectionGoal::None;
3264 }
3265 }
3266 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3267 }
3268
3269 pub fn select_to_end_of_line(
3270 &mut self,
3271 SelectToEndOfLine(stop_at_soft_boundaries): &SelectToEndOfLine,
3272 cx: &mut ViewContext<Self>,
3273 ) {
3274 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3275 let mut selections = self.local_selections::<Point>(cx);
3276 for selection in &mut selections {
3277 let head = selection.head().to_display_point(&display_map);
3278 let new_head = movement::line_end(&display_map, head, *stop_at_soft_boundaries);
3279 selection.set_head(new_head.to_point(&display_map));
3280 selection.goal = SelectionGoal::None;
3281 }
3282 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3283 }
3284
3285 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
3286 self.start_transaction(cx);
3287 self.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3288 self.delete(&Delete, cx);
3289 self.end_transaction(cx);
3290 }
3291
3292 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
3293 self.start_transaction(cx);
3294 self.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3295 self.cut(&Cut, cx);
3296 self.end_transaction(cx);
3297 }
3298
3299 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
3300 if matches!(self.mode, EditorMode::SingleLine) {
3301 cx.propagate_action();
3302 return;
3303 }
3304
3305 let selection = Selection {
3306 id: post_inc(&mut self.next_selection_id),
3307 start: 0,
3308 end: 0,
3309 reversed: false,
3310 goal: SelectionGoal::None,
3311 };
3312 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3313 }
3314
3315 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
3316 let mut selection = self.local_selections::<Point>(cx).last().unwrap().clone();
3317 selection.set_head(Point::zero());
3318 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3319 }
3320
3321 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
3322 if matches!(self.mode, EditorMode::SingleLine) {
3323 cx.propagate_action();
3324 return;
3325 }
3326
3327 let cursor = self.buffer.read(cx).read(cx).len();
3328 let selection = Selection {
3329 id: post_inc(&mut self.next_selection_id),
3330 start: cursor,
3331 end: cursor,
3332 reversed: false,
3333 goal: SelectionGoal::None,
3334 };
3335 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3336 }
3337
3338 pub fn set_nav_history(&mut self, nav_history: Option<ItemNavHistory>) {
3339 self.nav_history = nav_history;
3340 }
3341
3342 pub fn nav_history(&self) -> Option<&ItemNavHistory> {
3343 self.nav_history.as_ref()
3344 }
3345
3346 fn push_to_nav_history(
3347 &self,
3348 position: Anchor,
3349 new_position: Option<Point>,
3350 cx: &mut ViewContext<Self>,
3351 ) {
3352 if let Some(nav_history) = &self.nav_history {
3353 let buffer = self.buffer.read(cx).read(cx);
3354 let offset = position.to_offset(&buffer);
3355 let point = position.to_point(&buffer);
3356 drop(buffer);
3357
3358 if let Some(new_position) = new_position {
3359 let row_delta = (new_position.row as i64 - point.row as i64).abs();
3360 if row_delta < MIN_NAVIGATION_HISTORY_ROW_DELTA {
3361 return;
3362 }
3363 }
3364
3365 nav_history.push(Some(NavigationData {
3366 anchor: position,
3367 offset,
3368 }));
3369 }
3370 }
3371
3372 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
3373 let mut selection = self.local_selections::<usize>(cx).first().unwrap().clone();
3374 selection.set_head(self.buffer.read(cx).read(cx).len());
3375 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3376 }
3377
3378 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
3379 let selection = Selection {
3380 id: post_inc(&mut self.next_selection_id),
3381 start: 0,
3382 end: self.buffer.read(cx).read(cx).len(),
3383 reversed: false,
3384 goal: SelectionGoal::None,
3385 };
3386 self.update_selections(vec![selection], None, cx);
3387 }
3388
3389 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
3390 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3391 let mut selections = self.local_selections::<Point>(cx);
3392 let max_point = display_map.buffer_snapshot.max_point();
3393 for selection in &mut selections {
3394 let rows = selection.spanned_rows(true, &display_map);
3395 selection.start = Point::new(rows.start, 0);
3396 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
3397 selection.reversed = false;
3398 }
3399 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3400 }
3401
3402 pub fn split_selection_into_lines(
3403 &mut self,
3404 _: &SplitSelectionIntoLines,
3405 cx: &mut ViewContext<Self>,
3406 ) {
3407 let mut to_unfold = Vec::new();
3408 let mut new_selections = Vec::new();
3409 {
3410 let selections = self.local_selections::<Point>(cx);
3411 let buffer = self.buffer.read(cx).read(cx);
3412 for selection in selections {
3413 for row in selection.start.row..selection.end.row {
3414 let cursor = Point::new(row, buffer.line_len(row));
3415 new_selections.push(Selection {
3416 id: post_inc(&mut self.next_selection_id),
3417 start: cursor,
3418 end: cursor,
3419 reversed: false,
3420 goal: SelectionGoal::None,
3421 });
3422 }
3423 new_selections.push(Selection {
3424 id: selection.id,
3425 start: selection.end,
3426 end: selection.end,
3427 reversed: false,
3428 goal: SelectionGoal::None,
3429 });
3430 to_unfold.push(selection.start..selection.end);
3431 }
3432 }
3433 self.unfold_ranges(to_unfold, cx);
3434 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3435 }
3436
3437 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
3438 self.add_selection(true, cx);
3439 }
3440
3441 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
3442 self.add_selection(false, cx);
3443 }
3444
3445 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
3446 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3447 let mut selections = self.local_selections::<Point>(cx);
3448 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
3449 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
3450 let range = oldest_selection.display_range(&display_map).sorted();
3451 let columns = cmp::min(range.start.column(), range.end.column())
3452 ..cmp::max(range.start.column(), range.end.column());
3453
3454 selections.clear();
3455 let mut stack = Vec::new();
3456 for row in range.start.row()..=range.end.row() {
3457 if let Some(selection) = self.build_columnar_selection(
3458 &display_map,
3459 row,
3460 &columns,
3461 oldest_selection.reversed,
3462 ) {
3463 stack.push(selection.id);
3464 selections.push(selection);
3465 }
3466 }
3467
3468 if above {
3469 stack.reverse();
3470 }
3471
3472 AddSelectionsState { above, stack }
3473 });
3474
3475 let last_added_selection = *state.stack.last().unwrap();
3476 let mut new_selections = Vec::new();
3477 if above == state.above {
3478 let end_row = if above {
3479 0
3480 } else {
3481 display_map.max_point().row()
3482 };
3483
3484 'outer: for selection in selections {
3485 if selection.id == last_added_selection {
3486 let range = selection.display_range(&display_map).sorted();
3487 debug_assert_eq!(range.start.row(), range.end.row());
3488 let mut row = range.start.row();
3489 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
3490 {
3491 start..end
3492 } else {
3493 cmp::min(range.start.column(), range.end.column())
3494 ..cmp::max(range.start.column(), range.end.column())
3495 };
3496
3497 while row != end_row {
3498 if above {
3499 row -= 1;
3500 } else {
3501 row += 1;
3502 }
3503
3504 if let Some(new_selection) = self.build_columnar_selection(
3505 &display_map,
3506 row,
3507 &columns,
3508 selection.reversed,
3509 ) {
3510 state.stack.push(new_selection.id);
3511 if above {
3512 new_selections.push(new_selection);
3513 new_selections.push(selection);
3514 } else {
3515 new_selections.push(selection);
3516 new_selections.push(new_selection);
3517 }
3518
3519 continue 'outer;
3520 }
3521 }
3522 }
3523
3524 new_selections.push(selection);
3525 }
3526 } else {
3527 new_selections = selections;
3528 new_selections.retain(|s| s.id != last_added_selection);
3529 state.stack.pop();
3530 }
3531
3532 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3533 if state.stack.len() > 1 {
3534 self.add_selections_state = Some(state);
3535 }
3536 }
3537
3538 pub fn select_next(&mut self, action: &SelectNext, cx: &mut ViewContext<Self>) {
3539 let replace_newest = action.0;
3540 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3541 let buffer = &display_map.buffer_snapshot;
3542 let mut selections = self.local_selections::<usize>(cx);
3543 if let Some(mut select_next_state) = self.select_next_state.take() {
3544 let query = &select_next_state.query;
3545 if !select_next_state.done {
3546 let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
3547 let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
3548 let mut next_selected_range = None;
3549
3550 let bytes_after_last_selection =
3551 buffer.bytes_in_range(last_selection.end..buffer.len());
3552 let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
3553 let query_matches = query
3554 .stream_find_iter(bytes_after_last_selection)
3555 .map(|result| (last_selection.end, result))
3556 .chain(
3557 query
3558 .stream_find_iter(bytes_before_first_selection)
3559 .map(|result| (0, result)),
3560 );
3561 for (start_offset, query_match) in query_matches {
3562 let query_match = query_match.unwrap(); // can only fail due to I/O
3563 let offset_range =
3564 start_offset + query_match.start()..start_offset + query_match.end();
3565 let display_range = offset_range.start.to_display_point(&display_map)
3566 ..offset_range.end.to_display_point(&display_map);
3567
3568 if !select_next_state.wordwise
3569 || (!movement::is_inside_word(&display_map, display_range.start)
3570 && !movement::is_inside_word(&display_map, display_range.end))
3571 {
3572 next_selected_range = Some(offset_range);
3573 break;
3574 }
3575 }
3576
3577 if let Some(next_selected_range) = next_selected_range {
3578 if replace_newest {
3579 if let Some(newest_id) =
3580 selections.iter().max_by_key(|s| s.id).map(|s| s.id)
3581 {
3582 selections.retain(|s| s.id != newest_id);
3583 }
3584 }
3585 selections.push(Selection {
3586 id: post_inc(&mut self.next_selection_id),
3587 start: next_selected_range.start,
3588 end: next_selected_range.end,
3589 reversed: false,
3590 goal: SelectionGoal::None,
3591 });
3592 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3593 } else {
3594 select_next_state.done = true;
3595 }
3596 }
3597
3598 self.select_next_state = Some(select_next_state);
3599 } else if selections.len() == 1 {
3600 let selection = selections.last_mut().unwrap();
3601 if selection.start == selection.end {
3602 let word_range = movement::surrounding_word(
3603 &display_map,
3604 selection.start.to_display_point(&display_map),
3605 );
3606 selection.start = word_range.start.to_offset(&display_map, Bias::Left);
3607 selection.end = word_range.end.to_offset(&display_map, Bias::Left);
3608 selection.goal = SelectionGoal::None;
3609 selection.reversed = false;
3610
3611 let query = buffer
3612 .text_for_range(selection.start..selection.end)
3613 .collect::<String>();
3614 let select_state = SelectNextState {
3615 query: AhoCorasick::new_auto_configured(&[query]),
3616 wordwise: true,
3617 done: false,
3618 };
3619 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3620 self.select_next_state = Some(select_state);
3621 } else {
3622 let query = buffer
3623 .text_for_range(selection.start..selection.end)
3624 .collect::<String>();
3625 self.select_next_state = Some(SelectNextState {
3626 query: AhoCorasick::new_auto_configured(&[query]),
3627 wordwise: false,
3628 done: false,
3629 });
3630 self.select_next(action, cx);
3631 }
3632 }
3633 }
3634
3635 pub fn toggle_comments(&mut self, _: &ToggleComments, cx: &mut ViewContext<Self>) {
3636 // Get the line comment prefix. Split its trailing whitespace into a separate string,
3637 // as that portion won't be used for detecting if a line is a comment.
3638 let full_comment_prefix =
3639 if let Some(prefix) = self.language(cx).and_then(|l| l.line_comment_prefix()) {
3640 prefix.to_string()
3641 } else {
3642 return;
3643 };
3644 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
3645 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
3646
3647 self.start_transaction(cx);
3648 let mut selections = self.local_selections::<Point>(cx);
3649 let mut all_selection_lines_are_comments = true;
3650 let mut edit_ranges = Vec::new();
3651 let mut last_toggled_row = None;
3652 self.buffer.update(cx, |buffer, cx| {
3653 for selection in &mut selections {
3654 edit_ranges.clear();
3655 let snapshot = buffer.snapshot(cx);
3656
3657 let end_row =
3658 if selection.end.row > selection.start.row && selection.end.column == 0 {
3659 selection.end.row
3660 } else {
3661 selection.end.row + 1
3662 };
3663
3664 for row in selection.start.row..end_row {
3665 // If multiple selections contain a given row, avoid processing that
3666 // row more than once.
3667 if last_toggled_row == Some(row) {
3668 continue;
3669 } else {
3670 last_toggled_row = Some(row);
3671 }
3672
3673 if snapshot.is_line_blank(row) {
3674 continue;
3675 }
3676
3677 let start = Point::new(row, snapshot.indent_column_for_line(row));
3678 let mut line_bytes = snapshot
3679 .bytes_in_range(start..snapshot.max_point())
3680 .flatten()
3681 .copied();
3682
3683 // If this line currently begins with the line comment prefix, then record
3684 // the range containing the prefix.
3685 if all_selection_lines_are_comments
3686 && line_bytes
3687 .by_ref()
3688 .take(comment_prefix.len())
3689 .eq(comment_prefix.bytes())
3690 {
3691 // Include any whitespace that matches the comment prefix.
3692 let matching_whitespace_len = line_bytes
3693 .zip(comment_prefix_whitespace.bytes())
3694 .take_while(|(a, b)| a == b)
3695 .count() as u32;
3696 let end = Point::new(
3697 row,
3698 start.column + comment_prefix.len() as u32 + matching_whitespace_len,
3699 );
3700 edit_ranges.push(start..end);
3701 }
3702 // If this line does not begin with the line comment prefix, then record
3703 // the position where the prefix should be inserted.
3704 else {
3705 all_selection_lines_are_comments = false;
3706 edit_ranges.push(start..start);
3707 }
3708 }
3709
3710 if !edit_ranges.is_empty() {
3711 if all_selection_lines_are_comments {
3712 buffer.edit(edit_ranges.iter().cloned(), "", cx);
3713 } else {
3714 let min_column = edit_ranges.iter().map(|r| r.start.column).min().unwrap();
3715 let edit_ranges = edit_ranges.iter().map(|range| {
3716 let position = Point::new(range.start.row, min_column);
3717 position..position
3718 });
3719 buffer.edit(edit_ranges, &full_comment_prefix, cx);
3720 }
3721 }
3722 }
3723 });
3724
3725 self.update_selections(
3726 self.local_selections::<usize>(cx),
3727 Some(Autoscroll::Fit),
3728 cx,
3729 );
3730 self.end_transaction(cx);
3731 }
3732
3733 pub fn select_larger_syntax_node(
3734 &mut self,
3735 _: &SelectLargerSyntaxNode,
3736 cx: &mut ViewContext<Self>,
3737 ) {
3738 let old_selections = self.local_selections::<usize>(cx).into_boxed_slice();
3739 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3740 let buffer = self.buffer.read(cx).snapshot(cx);
3741
3742 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
3743 let mut selected_larger_node = false;
3744 let new_selections = old_selections
3745 .iter()
3746 .map(|selection| {
3747 let old_range = selection.start..selection.end;
3748 let mut new_range = old_range.clone();
3749 while let Some(containing_range) =
3750 buffer.range_for_syntax_ancestor(new_range.clone())
3751 {
3752 new_range = containing_range;
3753 if !display_map.intersects_fold(new_range.start)
3754 && !display_map.intersects_fold(new_range.end)
3755 {
3756 break;
3757 }
3758 }
3759
3760 selected_larger_node |= new_range != old_range;
3761 Selection {
3762 id: selection.id,
3763 start: new_range.start,
3764 end: new_range.end,
3765 goal: SelectionGoal::None,
3766 reversed: selection.reversed,
3767 }
3768 })
3769 .collect::<Vec<_>>();
3770
3771 if selected_larger_node {
3772 stack.push(old_selections);
3773 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3774 }
3775 self.select_larger_syntax_node_stack = stack;
3776 }
3777
3778 pub fn select_smaller_syntax_node(
3779 &mut self,
3780 _: &SelectSmallerSyntaxNode,
3781 cx: &mut ViewContext<Self>,
3782 ) {
3783 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
3784 if let Some(selections) = stack.pop() {
3785 self.update_selections(selections.to_vec(), Some(Autoscroll::Fit), cx);
3786 }
3787 self.select_larger_syntax_node_stack = stack;
3788 }
3789
3790 pub fn move_to_enclosing_bracket(
3791 &mut self,
3792 _: &MoveToEnclosingBracket,
3793 cx: &mut ViewContext<Self>,
3794 ) {
3795 let mut selections = self.local_selections::<usize>(cx);
3796 let buffer = self.buffer.read(cx).snapshot(cx);
3797 for selection in &mut selections {
3798 if let Some((open_range, close_range)) =
3799 buffer.enclosing_bracket_ranges(selection.start..selection.end)
3800 {
3801 let close_range = close_range.to_inclusive();
3802 let destination = if close_range.contains(&selection.start)
3803 && close_range.contains(&selection.end)
3804 {
3805 open_range.end
3806 } else {
3807 *close_range.start()
3808 };
3809 selection.start = destination;
3810 selection.end = destination;
3811 }
3812 }
3813
3814 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3815 }
3816
3817 pub fn show_next_diagnostic(&mut self, _: &ShowNextDiagnostic, cx: &mut ViewContext<Self>) {
3818 let buffer = self.buffer.read(cx).snapshot(cx);
3819 let selection = self.newest_selection::<usize>(&buffer);
3820 let mut active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
3821 active_diagnostics
3822 .primary_range
3823 .to_offset(&buffer)
3824 .to_inclusive()
3825 });
3826 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
3827 if active_primary_range.contains(&selection.head()) {
3828 *active_primary_range.end()
3829 } else {
3830 selection.head()
3831 }
3832 } else {
3833 selection.head()
3834 };
3835
3836 loop {
3837 let next_group = buffer
3838 .diagnostics_in_range::<_, usize>(search_start..buffer.len())
3839 .find_map(|entry| {
3840 if entry.diagnostic.is_primary
3841 && !entry.range.is_empty()
3842 && Some(entry.range.end) != active_primary_range.as_ref().map(|r| *r.end())
3843 {
3844 Some((entry.range, entry.diagnostic.group_id))
3845 } else {
3846 None
3847 }
3848 });
3849
3850 if let Some((primary_range, group_id)) = next_group {
3851 self.activate_diagnostics(group_id, cx);
3852 self.update_selections(
3853 vec![Selection {
3854 id: selection.id,
3855 start: primary_range.start,
3856 end: primary_range.start,
3857 reversed: false,
3858 goal: SelectionGoal::None,
3859 }],
3860 Some(Autoscroll::Center),
3861 cx,
3862 );
3863 break;
3864 } else if search_start == 0 {
3865 break;
3866 } else {
3867 // Cycle around to the start of the buffer, potentially moving back to the start of
3868 // the currently active diagnostic.
3869 search_start = 0;
3870 active_primary_range.take();
3871 }
3872 }
3873 }
3874
3875 pub fn go_to_definition(
3876 workspace: &mut Workspace,
3877 _: &GoToDefinition,
3878 cx: &mut ViewContext<Workspace>,
3879 ) {
3880 let active_item = workspace.active_item(cx);
3881 let editor_handle = if let Some(editor) = active_item
3882 .as_ref()
3883 .and_then(|item| item.act_as::<Self>(cx))
3884 {
3885 editor
3886 } else {
3887 return;
3888 };
3889
3890 let editor = editor_handle.read(cx);
3891 let buffer = editor.buffer.read(cx);
3892 let head = editor.newest_selection::<usize>(&buffer.read(cx)).head();
3893 let (buffer, head) = editor.buffer.read(cx).text_anchor_for_position(head, cx);
3894 let definitions = workspace
3895 .project()
3896 .update(cx, |project, cx| project.definition(&buffer, head, cx));
3897 cx.spawn(|workspace, mut cx| async move {
3898 let definitions = definitions.await?;
3899 workspace.update(&mut cx, |workspace, cx| {
3900 for definition in definitions {
3901 let range = definition
3902 .target_range
3903 .to_offset(definition.target_buffer.read(cx));
3904 let target_editor_handle = workspace
3905 .open_item(BufferItemHandle(definition.target_buffer), cx)
3906 .downcast::<Self>()
3907 .unwrap();
3908
3909 target_editor_handle.update(cx, |target_editor, cx| {
3910 // When selecting a definition in a different buffer, disable the nav history
3911 // to avoid creating a history entry at the previous cursor location.
3912 let disabled_history = if editor_handle == target_editor_handle {
3913 None
3914 } else {
3915 target_editor.nav_history.take()
3916 };
3917 target_editor.select_ranges([range], Some(Autoscroll::Center), cx);
3918 if disabled_history.is_some() {
3919 target_editor.nav_history = disabled_history;
3920 }
3921 });
3922 }
3923 });
3924
3925 Ok::<(), anyhow::Error>(())
3926 })
3927 .detach_and_log_err(cx);
3928 }
3929
3930 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
3931 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
3932 let buffer = self.buffer.read(cx).snapshot(cx);
3933 let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
3934 let is_valid = buffer
3935 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone())
3936 .any(|entry| {
3937 entry.diagnostic.is_primary
3938 && !entry.range.is_empty()
3939 && entry.range.start == primary_range_start
3940 && entry.diagnostic.message == active_diagnostics.primary_message
3941 });
3942
3943 if is_valid != active_diagnostics.is_valid {
3944 active_diagnostics.is_valid = is_valid;
3945 let mut new_styles = HashMap::default();
3946 for (block_id, diagnostic) in &active_diagnostics.blocks {
3947 new_styles.insert(
3948 *block_id,
3949 diagnostic_block_renderer(
3950 diagnostic.clone(),
3951 is_valid,
3952 self.build_settings.clone(),
3953 ),
3954 );
3955 }
3956 self.display_map
3957 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
3958 }
3959 }
3960 }
3961
3962 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) {
3963 self.dismiss_diagnostics(cx);
3964 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
3965 let buffer = self.buffer.read(cx).snapshot(cx);
3966
3967 let mut primary_range = None;
3968 let mut primary_message = None;
3969 let mut group_end = Point::zero();
3970 let diagnostic_group = buffer
3971 .diagnostic_group::<Point>(group_id)
3972 .map(|entry| {
3973 if entry.range.end > group_end {
3974 group_end = entry.range.end;
3975 }
3976 if entry.diagnostic.is_primary {
3977 primary_range = Some(entry.range.clone());
3978 primary_message = Some(entry.diagnostic.message.clone());
3979 }
3980 entry
3981 })
3982 .collect::<Vec<_>>();
3983 let primary_range = primary_range.unwrap();
3984 let primary_message = primary_message.unwrap();
3985 let primary_range =
3986 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
3987
3988 let blocks = display_map
3989 .insert_blocks(
3990 diagnostic_group.iter().map(|entry| {
3991 let build_settings = self.build_settings.clone();
3992 let diagnostic = entry.diagnostic.clone();
3993 let message_height = diagnostic.message.lines().count() as u8;
3994
3995 BlockProperties {
3996 position: buffer.anchor_after(entry.range.start),
3997 height: message_height,
3998 render: diagnostic_block_renderer(diagnostic, true, build_settings),
3999 disposition: BlockDisposition::Below,
4000 }
4001 }),
4002 cx,
4003 )
4004 .into_iter()
4005 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
4006 .collect();
4007
4008 Some(ActiveDiagnosticGroup {
4009 primary_range,
4010 primary_message,
4011 blocks,
4012 is_valid: true,
4013 })
4014 });
4015 }
4016
4017 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
4018 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
4019 self.display_map.update(cx, |display_map, cx| {
4020 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
4021 });
4022 cx.notify();
4023 }
4024 }
4025
4026 fn build_columnar_selection(
4027 &mut self,
4028 display_map: &DisplaySnapshot,
4029 row: u32,
4030 columns: &Range<u32>,
4031 reversed: bool,
4032 ) -> Option<Selection<Point>> {
4033 let is_empty = columns.start == columns.end;
4034 let line_len = display_map.line_len(row);
4035 if columns.start < line_len || (is_empty && columns.start == line_len) {
4036 let start = DisplayPoint::new(row, columns.start);
4037 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
4038 Some(Selection {
4039 id: post_inc(&mut self.next_selection_id),
4040 start: start.to_point(display_map),
4041 end: end.to_point(display_map),
4042 reversed,
4043 goal: SelectionGoal::ColumnRange {
4044 start: columns.start,
4045 end: columns.end,
4046 },
4047 })
4048 } else {
4049 None
4050 }
4051 }
4052
4053 pub fn local_selections_in_range(
4054 &self,
4055 range: Range<Anchor>,
4056 display_map: &DisplaySnapshot,
4057 ) -> Vec<Selection<Point>> {
4058 let buffer = &display_map.buffer_snapshot;
4059
4060 let start_ix = match self
4061 .selections
4062 .binary_search_by(|probe| probe.end.cmp(&range.start, &buffer).unwrap())
4063 {
4064 Ok(ix) | Err(ix) => ix,
4065 };
4066 let end_ix = match self
4067 .selections
4068 .binary_search_by(|probe| probe.start.cmp(&range.end, &buffer).unwrap())
4069 {
4070 Ok(ix) => ix + 1,
4071 Err(ix) => ix,
4072 };
4073
4074 fn point_selection(
4075 selection: &Selection<Anchor>,
4076 buffer: &MultiBufferSnapshot,
4077 ) -> Selection<Point> {
4078 let start = selection.start.to_point(&buffer);
4079 let end = selection.end.to_point(&buffer);
4080 Selection {
4081 id: selection.id,
4082 start,
4083 end,
4084 reversed: selection.reversed,
4085 goal: selection.goal,
4086 }
4087 }
4088
4089 self.selections[start_ix..end_ix]
4090 .iter()
4091 .chain(
4092 self.pending_selection
4093 .as_ref()
4094 .map(|pending| &pending.selection),
4095 )
4096 .map(|s| point_selection(s, &buffer))
4097 .collect()
4098 }
4099
4100 pub fn local_selections<'a, D>(&self, cx: &'a AppContext) -> Vec<Selection<D>>
4101 where
4102 D: 'a + TextDimension + Ord + Sub<D, Output = D>,
4103 {
4104 let buffer = self.buffer.read(cx).snapshot(cx);
4105 let mut selections = self
4106 .resolve_selections::<D, _>(self.selections.iter(), &buffer)
4107 .peekable();
4108
4109 let mut pending_selection = self.pending_selection::<D>(&buffer);
4110
4111 iter::from_fn(move || {
4112 if let Some(pending) = pending_selection.as_mut() {
4113 while let Some(next_selection) = selections.peek() {
4114 if pending.start <= next_selection.end && pending.end >= next_selection.start {
4115 let next_selection = selections.next().unwrap();
4116 if next_selection.start < pending.start {
4117 pending.start = next_selection.start;
4118 }
4119 if next_selection.end > pending.end {
4120 pending.end = next_selection.end;
4121 }
4122 } else if next_selection.end < pending.start {
4123 return selections.next();
4124 } else {
4125 break;
4126 }
4127 }
4128
4129 pending_selection.take()
4130 } else {
4131 selections.next()
4132 }
4133 })
4134 .collect()
4135 }
4136
4137 fn resolve_selections<'a, D, I>(
4138 &self,
4139 selections: I,
4140 snapshot: &MultiBufferSnapshot,
4141 ) -> impl 'a + Iterator<Item = Selection<D>>
4142 where
4143 D: TextDimension + Ord + Sub<D, Output = D>,
4144 I: 'a + IntoIterator<Item = &'a Selection<Anchor>>,
4145 {
4146 let (to_summarize, selections) = selections.into_iter().tee();
4147 let mut summaries = snapshot
4148 .summaries_for_anchors::<D, _>(to_summarize.flat_map(|s| [&s.start, &s.end]))
4149 .into_iter();
4150 selections.map(move |s| Selection {
4151 id: s.id,
4152 start: summaries.next().unwrap(),
4153 end: summaries.next().unwrap(),
4154 reversed: s.reversed,
4155 goal: s.goal,
4156 })
4157 }
4158
4159 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4160 &self,
4161 snapshot: &MultiBufferSnapshot,
4162 ) -> Option<Selection<D>> {
4163 self.pending_selection
4164 .as_ref()
4165 .map(|pending| self.resolve_selection(&pending.selection, &snapshot))
4166 }
4167
4168 fn resolve_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4169 &self,
4170 selection: &Selection<Anchor>,
4171 buffer: &MultiBufferSnapshot,
4172 ) -> Selection<D> {
4173 Selection {
4174 id: selection.id,
4175 start: selection.start.summary::<D>(&buffer),
4176 end: selection.end.summary::<D>(&buffer),
4177 reversed: selection.reversed,
4178 goal: selection.goal,
4179 }
4180 }
4181
4182 fn selection_count<'a>(&self) -> usize {
4183 let mut count = self.selections.len();
4184 if self.pending_selection.is_some() {
4185 count += 1;
4186 }
4187 count
4188 }
4189
4190 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4191 &self,
4192 snapshot: &MultiBufferSnapshot,
4193 ) -> Selection<D> {
4194 self.selections
4195 .iter()
4196 .min_by_key(|s| s.id)
4197 .map(|selection| self.resolve_selection(selection, snapshot))
4198 .or_else(|| self.pending_selection(snapshot))
4199 .unwrap()
4200 }
4201
4202 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4203 &self,
4204 snapshot: &MultiBufferSnapshot,
4205 ) -> Selection<D> {
4206 self.resolve_selection(self.newest_anchor_selection().unwrap(), snapshot)
4207 }
4208
4209 pub fn newest_anchor_selection(&self) -> Option<&Selection<Anchor>> {
4210 self.pending_selection
4211 .as_ref()
4212 .map(|s| &s.selection)
4213 .or_else(|| self.selections.iter().max_by_key(|s| s.id))
4214 }
4215
4216 pub fn update_selections<T>(
4217 &mut self,
4218 mut selections: Vec<Selection<T>>,
4219 autoscroll: Option<Autoscroll>,
4220 cx: &mut ViewContext<Self>,
4221 ) where
4222 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
4223 {
4224 let buffer = self.buffer.read(cx).snapshot(cx);
4225 selections.sort_unstable_by_key(|s| s.start);
4226
4227 // Merge overlapping selections.
4228 let mut i = 1;
4229 while i < selections.len() {
4230 if selections[i - 1].end >= selections[i].start {
4231 let removed = selections.remove(i);
4232 if removed.start < selections[i - 1].start {
4233 selections[i - 1].start = removed.start;
4234 }
4235 if removed.end > selections[i - 1].end {
4236 selections[i - 1].end = removed.end;
4237 }
4238 } else {
4239 i += 1;
4240 }
4241 }
4242
4243 if let Some(autoscroll) = autoscroll {
4244 self.request_autoscroll(autoscroll, cx);
4245 }
4246
4247 self.set_selections(
4248 Arc::from_iter(selections.into_iter().map(|selection| {
4249 let end_bias = if selection.end > selection.start {
4250 Bias::Left
4251 } else {
4252 Bias::Right
4253 };
4254 Selection {
4255 id: selection.id,
4256 start: buffer.anchor_after(selection.start),
4257 end: buffer.anchor_at(selection.end, end_bias),
4258 reversed: selection.reversed,
4259 goal: selection.goal,
4260 }
4261 })),
4262 cx,
4263 );
4264 }
4265
4266 /// Compute new ranges for any selections that were located in excerpts that have
4267 /// since been removed.
4268 ///
4269 /// Returns a `HashMap` indicating which selections whose former head position
4270 /// was no longer present. The keys of the map are selection ids. The values are
4271 /// the id of the new excerpt where the head of the selection has been moved.
4272 pub fn refresh_selections(&mut self, cx: &mut ViewContext<Self>) -> HashMap<usize, ExcerptId> {
4273 let snapshot = self.buffer.read(cx).read(cx);
4274 let anchors_with_status = snapshot.refresh_anchors(
4275 self.selections
4276 .iter()
4277 .flat_map(|selection| [&selection.start, &selection.end]),
4278 );
4279 let offsets =
4280 snapshot.summaries_for_anchors::<usize, _>(anchors_with_status.iter().map(|a| &a.1));
4281 let offsets = offsets.chunks(2);
4282 let statuses = anchors_with_status
4283 .chunks(2)
4284 .map(|a| (a[0].0 / 2, a[0].2, a[1].2));
4285
4286 let mut selections_with_lost_position = HashMap::default();
4287 let new_selections = offsets
4288 .zip(statuses)
4289 .map(|(offsets, (selection_ix, kept_start, kept_end))| {
4290 let selection = &self.selections[selection_ix];
4291 let kept_head = if selection.reversed {
4292 kept_start
4293 } else {
4294 kept_end
4295 };
4296 if !kept_head {
4297 selections_with_lost_position
4298 .insert(selection.id, selection.head().excerpt_id.clone());
4299 }
4300
4301 Selection {
4302 id: selection.id,
4303 start: offsets[0],
4304 end: offsets[1],
4305 reversed: selection.reversed,
4306 goal: selection.goal,
4307 }
4308 })
4309 .collect();
4310 drop(snapshot);
4311 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
4312 selections_with_lost_position
4313 }
4314
4315 fn set_selections(&mut self, selections: Arc<[Selection<Anchor>]>, cx: &mut ViewContext<Self>) {
4316 let old_cursor_position = self.newest_anchor_selection().map(|s| s.head());
4317 self.selections = selections;
4318 if self.focused {
4319 self.buffer.update(cx, |buffer, cx| {
4320 buffer.set_active_selections(&self.selections, cx)
4321 });
4322 }
4323
4324 let buffer = self.buffer.read(cx).snapshot(cx);
4325 self.pending_selection = None;
4326 self.add_selections_state = None;
4327 self.select_next_state = None;
4328 self.select_larger_syntax_node_stack.clear();
4329 self.autoclose_stack.invalidate(&self.selections, &buffer);
4330 self.snippet_stack.invalidate(&self.selections, &buffer);
4331
4332 let new_cursor_position = self
4333 .selections
4334 .iter()
4335 .max_by_key(|s| s.id)
4336 .map(|s| s.head());
4337 if let Some(old_cursor_position) = old_cursor_position {
4338 if let Some(new_cursor_position) = new_cursor_position.as_ref() {
4339 self.push_to_nav_history(
4340 old_cursor_position,
4341 Some(new_cursor_position.to_point(&buffer)),
4342 cx,
4343 );
4344 }
4345 }
4346
4347 let completion_menu = match self.context_menu.as_mut() {
4348 Some(ContextMenu::Completions(menu)) => Some(menu),
4349 _ => {
4350 self.context_menu.take();
4351 None
4352 }
4353 };
4354
4355 if let Some((completion_menu, cursor_position)) = completion_menu.zip(new_cursor_position) {
4356 let cursor_position = cursor_position.to_offset(&buffer);
4357 let (word_range, kind) =
4358 buffer.surrounding_word(completion_menu.initial_position.clone());
4359 if kind == Some(CharKind::Word) && word_range.to_inclusive().contains(&cursor_position)
4360 {
4361 let query = Self::completion_query(&buffer, cursor_position);
4362 cx.background()
4363 .block(completion_menu.filter(query.as_deref(), cx.background().clone()));
4364 self.show_completions(&ShowCompletions, cx);
4365 } else {
4366 self.hide_context_menu(cx);
4367 }
4368 }
4369
4370 self.pause_cursor_blinking(cx);
4371 cx.emit(Event::SelectionsChanged);
4372 }
4373
4374 pub fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
4375 self.autoscroll_request = Some(autoscroll);
4376 cx.notify();
4377 }
4378
4379 fn start_transaction(&mut self, cx: &mut ViewContext<Self>) {
4380 self.start_transaction_at(Instant::now(), cx);
4381 }
4382
4383 fn start_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
4384 self.end_selection(cx);
4385 if let Some(tx_id) = self
4386 .buffer
4387 .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
4388 {
4389 self.selection_history
4390 .insert(tx_id, (self.selections.clone(), None));
4391 }
4392 }
4393
4394 fn end_transaction(&mut self, cx: &mut ViewContext<Self>) {
4395 self.end_transaction_at(Instant::now(), cx);
4396 }
4397
4398 fn end_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
4399 if let Some(tx_id) = self
4400 .buffer
4401 .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
4402 {
4403 if let Some((_, end_selections)) = self.selection_history.get_mut(&tx_id) {
4404 *end_selections = Some(self.selections.clone());
4405 } else {
4406 log::error!("unexpectedly ended a transaction that wasn't started by this editor");
4407 }
4408 }
4409 }
4410
4411 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
4412 log::info!("Editor::page_up");
4413 }
4414
4415 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
4416 log::info!("Editor::page_down");
4417 }
4418
4419 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
4420 let mut fold_ranges = Vec::new();
4421
4422 let selections = self.local_selections::<Point>(cx);
4423 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4424 for selection in selections {
4425 let range = selection.display_range(&display_map).sorted();
4426 let buffer_start_row = range.start.to_point(&display_map).row;
4427
4428 for row in (0..=range.end.row()).rev() {
4429 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
4430 let fold_range = self.foldable_range_for_line(&display_map, row);
4431 if fold_range.end.row >= buffer_start_row {
4432 fold_ranges.push(fold_range);
4433 if row <= range.start.row() {
4434 break;
4435 }
4436 }
4437 }
4438 }
4439 }
4440
4441 self.fold_ranges(fold_ranges, cx);
4442 }
4443
4444 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
4445 let selections = self.local_selections::<Point>(cx);
4446 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4447 let buffer = &display_map.buffer_snapshot;
4448 let ranges = selections
4449 .iter()
4450 .map(|s| {
4451 let range = s.display_range(&display_map).sorted();
4452 let mut start = range.start.to_point(&display_map);
4453 let mut end = range.end.to_point(&display_map);
4454 start.column = 0;
4455 end.column = buffer.line_len(end.row);
4456 start..end
4457 })
4458 .collect::<Vec<_>>();
4459 self.unfold_ranges(ranges, cx);
4460 }
4461
4462 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
4463 let max_point = display_map.max_point();
4464 if display_row >= max_point.row() {
4465 false
4466 } else {
4467 let (start_indent, is_blank) = display_map.line_indent(display_row);
4468 if is_blank {
4469 false
4470 } else {
4471 for display_row in display_row + 1..=max_point.row() {
4472 let (indent, is_blank) = display_map.line_indent(display_row);
4473 if !is_blank {
4474 return indent > start_indent;
4475 }
4476 }
4477 false
4478 }
4479 }
4480 }
4481
4482 fn foldable_range_for_line(
4483 &self,
4484 display_map: &DisplaySnapshot,
4485 start_row: u32,
4486 ) -> Range<Point> {
4487 let max_point = display_map.max_point();
4488
4489 let (start_indent, _) = display_map.line_indent(start_row);
4490 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
4491 let mut end = None;
4492 for row in start_row + 1..=max_point.row() {
4493 let (indent, is_blank) = display_map.line_indent(row);
4494 if !is_blank && indent <= start_indent {
4495 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
4496 break;
4497 }
4498 }
4499
4500 let end = end.unwrap_or(max_point);
4501 return start.to_point(display_map)..end.to_point(display_map);
4502 }
4503
4504 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
4505 let selections = self.local_selections::<Point>(cx);
4506 let ranges = selections.into_iter().map(|s| s.start..s.end);
4507 self.fold_ranges(ranges, cx);
4508 }
4509
4510 fn fold_ranges<T: ToOffset>(
4511 &mut self,
4512 ranges: impl IntoIterator<Item = Range<T>>,
4513 cx: &mut ViewContext<Self>,
4514 ) {
4515 let mut ranges = ranges.into_iter().peekable();
4516 if ranges.peek().is_some() {
4517 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
4518 self.request_autoscroll(Autoscroll::Fit, cx);
4519 cx.notify();
4520 }
4521 }
4522
4523 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
4524 if !ranges.is_empty() {
4525 self.display_map
4526 .update(cx, |map, cx| map.unfold(ranges, cx));
4527 self.request_autoscroll(Autoscroll::Fit, cx);
4528 cx.notify();
4529 }
4530 }
4531
4532 pub fn insert_blocks(
4533 &mut self,
4534 blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
4535 cx: &mut ViewContext<Self>,
4536 ) -> Vec<BlockId> {
4537 let blocks = self
4538 .display_map
4539 .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
4540 self.request_autoscroll(Autoscroll::Fit, cx);
4541 blocks
4542 }
4543
4544 pub fn replace_blocks(
4545 &mut self,
4546 blocks: HashMap<BlockId, RenderBlock>,
4547 cx: &mut ViewContext<Self>,
4548 ) {
4549 self.display_map
4550 .update(cx, |display_map, _| display_map.replace_blocks(blocks));
4551 self.request_autoscroll(Autoscroll::Fit, cx);
4552 }
4553
4554 pub fn remove_blocks(&mut self, block_ids: HashSet<BlockId>, cx: &mut ViewContext<Self>) {
4555 self.display_map.update(cx, |display_map, cx| {
4556 display_map.remove_blocks(block_ids, cx)
4557 });
4558 }
4559
4560 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
4561 self.display_map
4562 .update(cx, |map, cx| map.snapshot(cx))
4563 .longest_row()
4564 }
4565
4566 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
4567 self.display_map
4568 .update(cx, |map, cx| map.snapshot(cx))
4569 .max_point()
4570 }
4571
4572 pub fn text(&self, cx: &AppContext) -> String {
4573 self.buffer.read(cx).read(cx).text()
4574 }
4575
4576 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
4577 self.display_map
4578 .update(cx, |map, cx| map.snapshot(cx))
4579 .text()
4580 }
4581
4582 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
4583 self.display_map
4584 .update(cx, |map, cx| map.set_wrap_width(width, cx))
4585 }
4586
4587 pub fn set_highlighted_rows(&mut self, rows: Option<Range<u32>>) {
4588 self.highlighted_rows = rows;
4589 }
4590
4591 pub fn highlighted_rows(&self) -> Option<Range<u32>> {
4592 self.highlighted_rows.clone()
4593 }
4594
4595 pub fn highlight_ranges<T: 'static>(
4596 &mut self,
4597 ranges: Vec<Range<Anchor>>,
4598 color: Color,
4599 cx: &mut ViewContext<Self>,
4600 ) {
4601 self.highlighted_ranges
4602 .insert(TypeId::of::<T>(), (color, ranges));
4603 cx.notify();
4604 }
4605
4606 pub fn clear_highlighted_ranges<T: 'static>(&mut self, cx: &mut ViewContext<Self>) {
4607 self.highlighted_ranges.remove(&TypeId::of::<T>());
4608 cx.notify();
4609 }
4610
4611 #[cfg(feature = "test-support")]
4612 pub fn all_highlighted_ranges(
4613 &mut self,
4614 cx: &mut ViewContext<Self>,
4615 ) -> Vec<(Range<DisplayPoint>, Color)> {
4616 let snapshot = self.snapshot(cx);
4617 let buffer = &snapshot.buffer_snapshot;
4618 let start = buffer.anchor_before(0);
4619 let end = buffer.anchor_after(buffer.len());
4620 self.highlighted_ranges_in_range(start..end, &snapshot)
4621 }
4622
4623 pub fn highlighted_ranges_for_type<T: 'static>(&self) -> Option<(Color, &[Range<Anchor>])> {
4624 self.highlighted_ranges
4625 .get(&TypeId::of::<T>())
4626 .map(|(color, ranges)| (*color, ranges.as_slice()))
4627 }
4628
4629 pub fn highlighted_ranges_in_range(
4630 &self,
4631 search_range: Range<Anchor>,
4632 display_snapshot: &DisplaySnapshot,
4633 ) -> Vec<(Range<DisplayPoint>, Color)> {
4634 let mut results = Vec::new();
4635 let buffer = &display_snapshot.buffer_snapshot;
4636 for (color, ranges) in self.highlighted_ranges.values() {
4637 let start_ix = match ranges.binary_search_by(|probe| {
4638 let cmp = probe.end.cmp(&search_range.start, &buffer).unwrap();
4639 if cmp.is_gt() {
4640 Ordering::Greater
4641 } else {
4642 Ordering::Less
4643 }
4644 }) {
4645 Ok(i) | Err(i) => i,
4646 };
4647 for range in &ranges[start_ix..] {
4648 if range.start.cmp(&search_range.end, &buffer).unwrap().is_ge() {
4649 break;
4650 }
4651 let start = range
4652 .start
4653 .to_point(buffer)
4654 .to_display_point(display_snapshot);
4655 let end = range
4656 .end
4657 .to_point(buffer)
4658 .to_display_point(display_snapshot);
4659 results.push((start..end, *color))
4660 }
4661 }
4662 results
4663 }
4664
4665 fn next_blink_epoch(&mut self) -> usize {
4666 self.blink_epoch += 1;
4667 self.blink_epoch
4668 }
4669
4670 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
4671 if !self.focused {
4672 return;
4673 }
4674
4675 self.show_local_cursors = true;
4676 cx.notify();
4677
4678 let epoch = self.next_blink_epoch();
4679 cx.spawn(|this, mut cx| {
4680 let this = this.downgrade();
4681 async move {
4682 Timer::after(CURSOR_BLINK_INTERVAL).await;
4683 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
4684 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
4685 }
4686 }
4687 })
4688 .detach();
4689 }
4690
4691 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
4692 if epoch == self.blink_epoch {
4693 self.blinking_paused = false;
4694 self.blink_cursors(epoch, cx);
4695 }
4696 }
4697
4698 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
4699 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
4700 self.show_local_cursors = !self.show_local_cursors;
4701 cx.notify();
4702
4703 let epoch = self.next_blink_epoch();
4704 cx.spawn(|this, mut cx| {
4705 let this = this.downgrade();
4706 async move {
4707 Timer::after(CURSOR_BLINK_INTERVAL).await;
4708 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
4709 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
4710 }
4711 }
4712 })
4713 .detach();
4714 }
4715 }
4716
4717 pub fn show_local_cursors(&self) -> bool {
4718 self.show_local_cursors
4719 }
4720
4721 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
4722 self.refresh_active_diagnostics(cx);
4723 cx.notify();
4724 }
4725
4726 fn on_buffer_event(
4727 &mut self,
4728 _: ModelHandle<MultiBuffer>,
4729 event: &language::Event,
4730 cx: &mut ViewContext<Self>,
4731 ) {
4732 match event {
4733 language::Event::Edited => cx.emit(Event::Edited),
4734 language::Event::Dirtied => cx.emit(Event::Dirtied),
4735 language::Event::Saved => cx.emit(Event::Saved),
4736 language::Event::FileHandleChanged => cx.emit(Event::TitleChanged),
4737 language::Event::Reloaded => cx.emit(Event::TitleChanged),
4738 language::Event::Closed => cx.emit(Event::Closed),
4739 _ => {}
4740 }
4741 }
4742
4743 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
4744 cx.notify();
4745 }
4746}
4747
4748impl EditorSnapshot {
4749 pub fn is_focused(&self) -> bool {
4750 self.is_focused
4751 }
4752
4753 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
4754 self.placeholder_text.as_ref()
4755 }
4756
4757 pub fn scroll_position(&self) -> Vector2F {
4758 compute_scroll_position(
4759 &self.display_snapshot,
4760 self.scroll_position,
4761 &self.scroll_top_anchor,
4762 )
4763 }
4764}
4765
4766impl Deref for EditorSnapshot {
4767 type Target = DisplaySnapshot;
4768
4769 fn deref(&self) -> &Self::Target {
4770 &self.display_snapshot
4771 }
4772}
4773
4774impl EditorSettings {
4775 #[cfg(any(test, feature = "test-support"))]
4776 pub fn test(cx: &AppContext) -> Self {
4777 use theme::{ContainedLabel, ContainedText, DiagnosticHeader, DiagnosticPathHeader};
4778
4779 Self {
4780 tab_size: 4,
4781 soft_wrap: SoftWrap::None,
4782 style: {
4783 let font_cache: &gpui::FontCache = cx.font_cache();
4784 let font_family_name = Arc::from("Monaco");
4785 let font_properties = Default::default();
4786 let font_family_id = font_cache.load_family(&[&font_family_name]).unwrap();
4787 let font_id = font_cache
4788 .select_font(font_family_id, &font_properties)
4789 .unwrap();
4790 let text = gpui::fonts::TextStyle {
4791 font_family_name,
4792 font_family_id,
4793 font_id,
4794 font_size: 14.,
4795 color: gpui::color::Color::from_u32(0xff0000ff),
4796 font_properties,
4797 underline: None,
4798 };
4799 let default_diagnostic_style = DiagnosticStyle {
4800 message: text.clone().into(),
4801 header: Default::default(),
4802 text_scale_factor: 1.,
4803 };
4804 EditorStyle {
4805 text: text.clone(),
4806 placeholder_text: None,
4807 background: Default::default(),
4808 gutter_background: Default::default(),
4809 gutter_padding_factor: 2.,
4810 active_line_background: Default::default(),
4811 highlighted_line_background: Default::default(),
4812 line_number: Default::default(),
4813 line_number_active: Default::default(),
4814 selection: Default::default(),
4815 guest_selections: Default::default(),
4816 syntax: Default::default(),
4817 diagnostic_path_header: DiagnosticPathHeader {
4818 container: Default::default(),
4819 filename: ContainedText {
4820 container: Default::default(),
4821 text: text.clone(),
4822 },
4823 path: ContainedText {
4824 container: Default::default(),
4825 text: text.clone(),
4826 },
4827 text_scale_factor: 1.,
4828 },
4829 diagnostic_header: DiagnosticHeader {
4830 container: Default::default(),
4831 message: ContainedLabel {
4832 container: Default::default(),
4833 label: text.clone().into(),
4834 },
4835 code: ContainedText {
4836 container: Default::default(),
4837 text: text.clone(),
4838 },
4839 icon_width_factor: 1.,
4840 text_scale_factor: 1.,
4841 },
4842 error_diagnostic: default_diagnostic_style.clone(),
4843 invalid_error_diagnostic: default_diagnostic_style.clone(),
4844 warning_diagnostic: default_diagnostic_style.clone(),
4845 invalid_warning_diagnostic: default_diagnostic_style.clone(),
4846 information_diagnostic: default_diagnostic_style.clone(),
4847 invalid_information_diagnostic: default_diagnostic_style.clone(),
4848 hint_diagnostic: default_diagnostic_style.clone(),
4849 invalid_hint_diagnostic: default_diagnostic_style.clone(),
4850 autocomplete: Default::default(),
4851 }
4852 },
4853 }
4854 }
4855}
4856
4857fn compute_scroll_position(
4858 snapshot: &DisplaySnapshot,
4859 mut scroll_position: Vector2F,
4860 scroll_top_anchor: &Option<Anchor>,
4861) -> Vector2F {
4862 if let Some(anchor) = scroll_top_anchor {
4863 let scroll_top = anchor.to_display_point(snapshot).row() as f32;
4864 scroll_position.set_y(scroll_top + scroll_position.y());
4865 } else {
4866 scroll_position.set_y(0.);
4867 }
4868 scroll_position
4869}
4870
4871#[derive(Copy, Clone)]
4872pub enum Event {
4873 Activate,
4874 Edited,
4875 Blurred,
4876 Dirtied,
4877 Saved,
4878 TitleChanged,
4879 SelectionsChanged,
4880 Closed,
4881}
4882
4883impl Entity for Editor {
4884 type Event = Event;
4885}
4886
4887impl View for Editor {
4888 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
4889 let settings = (self.build_settings)(cx);
4890 self.display_map.update(cx, |map, cx| {
4891 map.set_font(
4892 settings.style.text.font_id,
4893 settings.style.text.font_size,
4894 cx,
4895 )
4896 });
4897 EditorElement::new(self.handle.clone(), settings).boxed()
4898 }
4899
4900 fn ui_name() -> &'static str {
4901 "Editor"
4902 }
4903
4904 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
4905 self.focused = true;
4906 self.blink_cursors(self.blink_epoch, cx);
4907 self.buffer.update(cx, |buffer, cx| {
4908 buffer.finalize_last_transaction(cx);
4909 buffer.set_active_selections(&self.selections, cx)
4910 });
4911 }
4912
4913 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
4914 self.focused = false;
4915 self.show_local_cursors = false;
4916 self.buffer
4917 .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
4918 self.hide_context_menu(cx);
4919 cx.emit(Event::Blurred);
4920 cx.notify();
4921 }
4922
4923 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
4924 let mut cx = Self::default_keymap_context();
4925 let mode = match self.mode {
4926 EditorMode::SingleLine => "single_line",
4927 EditorMode::AutoHeight { .. } => "auto_height",
4928 EditorMode::Full => "full",
4929 };
4930 cx.map.insert("mode".into(), mode.into());
4931 match self.context_menu.as_ref() {
4932 Some(ContextMenu::Completions(_)) => {
4933 cx.set.insert("showing_completions".into());
4934 }
4935 Some(ContextMenu::CodeActions(_)) => {
4936 cx.set.insert("showing_code_actions".into());
4937 }
4938 None => {}
4939 }
4940 cx
4941 }
4942}
4943
4944impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
4945 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
4946 let start = self.start.to_point(buffer);
4947 let end = self.end.to_point(buffer);
4948 if self.reversed {
4949 end..start
4950 } else {
4951 start..end
4952 }
4953 }
4954
4955 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
4956 let start = self.start.to_offset(buffer);
4957 let end = self.end.to_offset(buffer);
4958 if self.reversed {
4959 end..start
4960 } else {
4961 start..end
4962 }
4963 }
4964
4965 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
4966 let start = self
4967 .start
4968 .to_point(&map.buffer_snapshot)
4969 .to_display_point(map);
4970 let end = self
4971 .end
4972 .to_point(&map.buffer_snapshot)
4973 .to_display_point(map);
4974 if self.reversed {
4975 end..start
4976 } else {
4977 start..end
4978 }
4979 }
4980
4981 fn spanned_rows(
4982 &self,
4983 include_end_if_at_line_start: bool,
4984 map: &DisplaySnapshot,
4985 ) -> Range<u32> {
4986 let start = self.start.to_point(&map.buffer_snapshot);
4987 let mut end = self.end.to_point(&map.buffer_snapshot);
4988 if !include_end_if_at_line_start && start.row != end.row && end.column == 0 {
4989 end.row -= 1;
4990 }
4991
4992 let buffer_start = map.prev_line_boundary(start).0;
4993 let buffer_end = map.next_line_boundary(end).0;
4994 buffer_start.row..buffer_end.row + 1
4995 }
4996}
4997
4998impl<T: InvalidationRegion> InvalidationStack<T> {
4999 fn invalidate<S>(&mut self, selections: &[Selection<S>], buffer: &MultiBufferSnapshot)
5000 where
5001 S: Clone + ToOffset,
5002 {
5003 while let Some(region) = self.last() {
5004 let all_selections_inside_invalidation_ranges =
5005 if selections.len() == region.ranges().len() {
5006 selections
5007 .iter()
5008 .zip(region.ranges().iter().map(|r| r.to_offset(&buffer)))
5009 .all(|(selection, invalidation_range)| {
5010 let head = selection.head().to_offset(&buffer);
5011 invalidation_range.start <= head && invalidation_range.end >= head
5012 })
5013 } else {
5014 false
5015 };
5016
5017 if all_selections_inside_invalidation_ranges {
5018 break;
5019 } else {
5020 self.pop();
5021 }
5022 }
5023 }
5024}
5025
5026impl<T> Default for InvalidationStack<T> {
5027 fn default() -> Self {
5028 Self(Default::default())
5029 }
5030}
5031
5032impl<T> Deref for InvalidationStack<T> {
5033 type Target = Vec<T>;
5034
5035 fn deref(&self) -> &Self::Target {
5036 &self.0
5037 }
5038}
5039
5040impl<T> DerefMut for InvalidationStack<T> {
5041 fn deref_mut(&mut self) -> &mut Self::Target {
5042 &mut self.0
5043 }
5044}
5045
5046impl InvalidationRegion for BracketPairState {
5047 fn ranges(&self) -> &[Range<Anchor>] {
5048 &self.ranges
5049 }
5050}
5051
5052impl InvalidationRegion for SnippetState {
5053 fn ranges(&self) -> &[Range<Anchor>] {
5054 &self.ranges[self.active_index]
5055 }
5056}
5057
5058pub fn diagnostic_block_renderer(
5059 diagnostic: Diagnostic,
5060 is_valid: bool,
5061 build_settings: BuildSettings,
5062) -> RenderBlock {
5063 let mut highlighted_lines = Vec::new();
5064 for line in diagnostic.message.lines() {
5065 highlighted_lines.push(highlight_diagnostic_message(line));
5066 }
5067
5068 Arc::new(move |cx: &BlockContext| {
5069 let settings = build_settings(cx);
5070 let style = diagnostic_style(diagnostic.severity, is_valid, &settings.style);
5071 let font_size = (style.text_scale_factor * settings.style.text.font_size).round();
5072 Flex::column()
5073 .with_children(highlighted_lines.iter().map(|(line, highlights)| {
5074 Label::new(
5075 line.clone(),
5076 style.message.clone().with_font_size(font_size),
5077 )
5078 .with_highlights(highlights.clone())
5079 .contained()
5080 .with_margin_left(cx.anchor_x)
5081 .boxed()
5082 }))
5083 .aligned()
5084 .left()
5085 .boxed()
5086 })
5087}
5088
5089pub fn highlight_diagnostic_message(message: &str) -> (String, Vec<usize>) {
5090 let mut message_without_backticks = String::new();
5091 let mut prev_offset = 0;
5092 let mut inside_block = false;
5093 let mut highlights = Vec::new();
5094 for (match_ix, (offset, _)) in message
5095 .match_indices('`')
5096 .chain([(message.len(), "")])
5097 .enumerate()
5098 {
5099 message_without_backticks.push_str(&message[prev_offset..offset]);
5100 if inside_block {
5101 highlights.extend(prev_offset - match_ix..offset - match_ix);
5102 }
5103
5104 inside_block = !inside_block;
5105 prev_offset = offset + 1;
5106 }
5107
5108 (message_without_backticks, highlights)
5109}
5110
5111pub fn diagnostic_style(
5112 severity: DiagnosticSeverity,
5113 valid: bool,
5114 style: &EditorStyle,
5115) -> DiagnosticStyle {
5116 match (severity, valid) {
5117 (DiagnosticSeverity::ERROR, true) => style.error_diagnostic.clone(),
5118 (DiagnosticSeverity::ERROR, false) => style.invalid_error_diagnostic.clone(),
5119 (DiagnosticSeverity::WARNING, true) => style.warning_diagnostic.clone(),
5120 (DiagnosticSeverity::WARNING, false) => style.invalid_warning_diagnostic.clone(),
5121 (DiagnosticSeverity::INFORMATION, true) => style.information_diagnostic.clone(),
5122 (DiagnosticSeverity::INFORMATION, false) => style.invalid_information_diagnostic.clone(),
5123 (DiagnosticSeverity::HINT, true) => style.hint_diagnostic.clone(),
5124 (DiagnosticSeverity::HINT, false) => style.invalid_hint_diagnostic.clone(),
5125 _ => DiagnosticStyle {
5126 message: style.text.clone().into(),
5127 header: Default::default(),
5128 text_scale_factor: 1.,
5129 },
5130 }
5131}
5132
5133pub fn settings_builder(
5134 buffer: WeakModelHandle<MultiBuffer>,
5135 settings: watch::Receiver<workspace::Settings>,
5136) -> BuildSettings {
5137 Arc::new(move |cx| {
5138 let settings = settings.borrow();
5139 let font_cache = cx.font_cache();
5140 let font_family_id = settings.buffer_font_family;
5141 let font_family_name = cx.font_cache().family_name(font_family_id).unwrap();
5142 let font_properties = Default::default();
5143 let font_id = font_cache
5144 .select_font(font_family_id, &font_properties)
5145 .unwrap();
5146 let font_size = settings.buffer_font_size;
5147
5148 let mut theme = settings.theme.editor.clone();
5149 theme.text = TextStyle {
5150 color: theme.text.color,
5151 font_family_name,
5152 font_family_id,
5153 font_id,
5154 font_size,
5155 font_properties,
5156 underline: None,
5157 };
5158 let language = buffer.upgrade(cx).and_then(|buf| buf.read(cx).language(cx));
5159 let soft_wrap = match settings.soft_wrap(language) {
5160 workspace::settings::SoftWrap::None => SoftWrap::None,
5161 workspace::settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
5162 workspace::settings::SoftWrap::PreferredLineLength => {
5163 SoftWrap::Column(settings.preferred_line_length(language).saturating_sub(1))
5164 }
5165 };
5166
5167 EditorSettings {
5168 tab_size: settings.tab_size,
5169 soft_wrap,
5170 style: theme,
5171 }
5172 })
5173}
5174
5175pub fn combine_syntax_and_fuzzy_match_highlights(
5176 text: &str,
5177 default_style: HighlightStyle,
5178 syntax_ranges: impl Iterator<Item = (Range<usize>, HighlightStyle)>,
5179 match_indices: &[usize],
5180) -> Vec<(Range<usize>, HighlightStyle)> {
5181 let mut result = Vec::new();
5182 let mut match_indices = match_indices.iter().copied().peekable();
5183
5184 for (range, mut syntax_highlight) in syntax_ranges.chain([(usize::MAX..0, Default::default())])
5185 {
5186 syntax_highlight.font_properties.weight(Default::default());
5187
5188 // Add highlights for any fuzzy match characters before the next
5189 // syntax highlight range.
5190 while let Some(&match_index) = match_indices.peek() {
5191 if match_index >= range.start {
5192 break;
5193 }
5194 match_indices.next();
5195 let end_index = char_ix_after(match_index, text);
5196 let mut match_style = default_style;
5197 match_style.font_properties.weight(fonts::Weight::BOLD);
5198 result.push((match_index..end_index, match_style));
5199 }
5200
5201 if range.start == usize::MAX {
5202 break;
5203 }
5204
5205 // Add highlights for any fuzzy match characters within the
5206 // syntax highlight range.
5207 let mut offset = range.start;
5208 while let Some(&match_index) = match_indices.peek() {
5209 if match_index >= range.end {
5210 break;
5211 }
5212
5213 match_indices.next();
5214 if match_index > offset {
5215 result.push((offset..match_index, syntax_highlight));
5216 }
5217
5218 let mut end_index = char_ix_after(match_index, text);
5219 while let Some(&next_match_index) = match_indices.peek() {
5220 if next_match_index == end_index && next_match_index < range.end {
5221 end_index = char_ix_after(next_match_index, text);
5222 match_indices.next();
5223 } else {
5224 break;
5225 }
5226 }
5227
5228 let mut match_style = syntax_highlight;
5229 match_style.font_properties.weight(fonts::Weight::BOLD);
5230 result.push((match_index..end_index, match_style));
5231 offset = end_index;
5232 }
5233
5234 if offset < range.end {
5235 result.push((offset..range.end, syntax_highlight));
5236 }
5237 }
5238
5239 fn char_ix_after(ix: usize, text: &str) -> usize {
5240 ix + text[ix..].chars().next().unwrap().len_utf8()
5241 }
5242
5243 result
5244}
5245
5246fn styled_runs_for_completion_label<'a>(
5247 label: &'a CompletionLabel,
5248 default_color: Color,
5249 syntax_theme: &'a theme::SyntaxTheme,
5250) -> impl 'a + Iterator<Item = (Range<usize>, HighlightStyle)> {
5251 const MUTED_OPACITY: usize = 165;
5252
5253 let mut muted_default_style = HighlightStyle {
5254 color: default_color,
5255 ..Default::default()
5256 };
5257 muted_default_style.color.a = ((default_color.a as usize * MUTED_OPACITY) / 255) as u8;
5258
5259 let mut prev_end = label.filter_range.end;
5260 label
5261 .runs
5262 .iter()
5263 .enumerate()
5264 .flat_map(move |(ix, (range, highlight_id))| {
5265 let style = if let Some(style) = highlight_id.style(syntax_theme) {
5266 style
5267 } else {
5268 return Default::default();
5269 };
5270 let mut muted_style = style.clone();
5271 muted_style.color.a = ((style.color.a as usize * MUTED_OPACITY) / 255) as u8;
5272
5273 let mut runs = SmallVec::<[(Range<usize>, HighlightStyle); 3]>::new();
5274 if range.start >= label.filter_range.end {
5275 if range.start > prev_end {
5276 runs.push((prev_end..range.start, muted_default_style));
5277 }
5278 runs.push((range.clone(), muted_style));
5279 } else if range.end <= label.filter_range.end {
5280 runs.push((range.clone(), style));
5281 } else {
5282 runs.push((range.start..label.filter_range.end, style));
5283 runs.push((label.filter_range.end..range.end, muted_style));
5284 }
5285 prev_end = cmp::max(prev_end, range.end);
5286
5287 if ix + 1 == label.runs.len() && label.text.len() > prev_end {
5288 runs.push((prev_end..label.text.len(), muted_default_style));
5289 }
5290
5291 runs
5292 })
5293}
5294
5295#[cfg(test)]
5296mod tests {
5297 use super::*;
5298 use language::LanguageConfig;
5299 use lsp::FakeLanguageServer;
5300 use project::{FakeFs, ProjectPath};
5301 use std::{cell::RefCell, rc::Rc, time::Instant};
5302 use text::Point;
5303 use unindent::Unindent;
5304 use util::test::sample_text;
5305
5306 #[gpui::test]
5307 fn test_undo_redo_with_selection_restoration(cx: &mut MutableAppContext) {
5308 let mut now = Instant::now();
5309 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
5310 let group_interval = buffer.read(cx).transaction_group_interval();
5311 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5312 let settings = EditorSettings::test(cx);
5313 let (_, editor) = cx.add_window(Default::default(), |cx| {
5314 build_editor(buffer.clone(), settings, cx)
5315 });
5316
5317 editor.update(cx, |editor, cx| {
5318 editor.start_transaction_at(now, cx);
5319 editor.select_ranges([2..4], None, cx);
5320 editor.insert("cd", cx);
5321 editor.end_transaction_at(now, cx);
5322 assert_eq!(editor.text(cx), "12cd56");
5323 assert_eq!(editor.selected_ranges(cx), vec![4..4]);
5324
5325 editor.start_transaction_at(now, cx);
5326 editor.select_ranges([4..5], None, cx);
5327 editor.insert("e", cx);
5328 editor.end_transaction_at(now, cx);
5329 assert_eq!(editor.text(cx), "12cde6");
5330 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
5331
5332 now += group_interval + Duration::from_millis(1);
5333 editor.select_ranges([2..2], None, cx);
5334
5335 // Simulate an edit in another editor
5336 buffer.update(cx, |buffer, cx| {
5337 buffer.start_transaction_at(now, cx);
5338 buffer.edit([0..1], "a", cx);
5339 buffer.edit([1..1], "b", cx);
5340 buffer.end_transaction_at(now, cx);
5341 });
5342
5343 assert_eq!(editor.text(cx), "ab2cde6");
5344 assert_eq!(editor.selected_ranges(cx), vec![3..3]);
5345
5346 // Last transaction happened past the group interval in a different editor.
5347 // Undo it individually and don't restore selections.
5348 editor.undo(&Undo, cx);
5349 assert_eq!(editor.text(cx), "12cde6");
5350 assert_eq!(editor.selected_ranges(cx), vec![2..2]);
5351
5352 // First two transactions happened within the group interval in this editor.
5353 // Undo them together and restore selections.
5354 editor.undo(&Undo, cx);
5355 editor.undo(&Undo, cx); // Undo stack is empty here, so this is a no-op.
5356 assert_eq!(editor.text(cx), "123456");
5357 assert_eq!(editor.selected_ranges(cx), vec![0..0]);
5358
5359 // Redo the first two transactions together.
5360 editor.redo(&Redo, cx);
5361 assert_eq!(editor.text(cx), "12cde6");
5362 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
5363
5364 // Redo the last transaction on its own.
5365 editor.redo(&Redo, cx);
5366 assert_eq!(editor.text(cx), "ab2cde6");
5367 assert_eq!(editor.selected_ranges(cx), vec![6..6]);
5368
5369 // Test empty transactions.
5370 editor.start_transaction_at(now, cx);
5371 editor.end_transaction_at(now, cx);
5372 editor.undo(&Undo, cx);
5373 assert_eq!(editor.text(cx), "12cde6");
5374 });
5375 }
5376
5377 #[gpui::test]
5378 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
5379 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
5380 let settings = EditorSettings::test(cx);
5381 let (_, editor) =
5382 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5383
5384 editor.update(cx, |view, cx| {
5385 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
5386 });
5387
5388 assert_eq!(
5389 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5390 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
5391 );
5392
5393 editor.update(cx, |view, cx| {
5394 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
5395 });
5396
5397 assert_eq!(
5398 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5399 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
5400 );
5401
5402 editor.update(cx, |view, cx| {
5403 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
5404 });
5405
5406 assert_eq!(
5407 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5408 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
5409 );
5410
5411 editor.update(cx, |view, cx| {
5412 view.end_selection(cx);
5413 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
5414 });
5415
5416 assert_eq!(
5417 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5418 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
5419 );
5420
5421 editor.update(cx, |view, cx| {
5422 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
5423 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
5424 });
5425
5426 assert_eq!(
5427 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5428 [
5429 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
5430 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
5431 ]
5432 );
5433
5434 editor.update(cx, |view, cx| {
5435 view.end_selection(cx);
5436 });
5437
5438 assert_eq!(
5439 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5440 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
5441 );
5442 }
5443
5444 #[gpui::test]
5445 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
5446 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
5447 let settings = EditorSettings::test(cx);
5448 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5449
5450 view.update(cx, |view, cx| {
5451 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
5452 assert_eq!(
5453 view.selected_display_ranges(cx),
5454 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
5455 );
5456 });
5457
5458 view.update(cx, |view, cx| {
5459 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
5460 assert_eq!(
5461 view.selected_display_ranges(cx),
5462 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
5463 );
5464 });
5465
5466 view.update(cx, |view, cx| {
5467 view.cancel(&Cancel, cx);
5468 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
5469 assert_eq!(
5470 view.selected_display_ranges(cx),
5471 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
5472 );
5473 });
5474 }
5475
5476 #[gpui::test]
5477 fn test_navigation_history(cx: &mut gpui::MutableAppContext) {
5478 cx.add_window(Default::default(), |cx| {
5479 use workspace::ItemView;
5480 let nav_history = Rc::new(RefCell::new(workspace::NavHistory::default()));
5481 let settings = EditorSettings::test(&cx);
5482 let buffer = MultiBuffer::build_simple(&sample_text(30, 5, 'a'), cx);
5483 let mut editor = build_editor(buffer.clone(), settings, cx);
5484 editor.nav_history = Some(ItemNavHistory::new(nav_history.clone(), &cx.handle()));
5485
5486 // Move the cursor a small distance.
5487 // Nothing is added to the navigation history.
5488 editor.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
5489 editor.select_display_ranges(&[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)], cx);
5490 assert!(nav_history.borrow_mut().pop_backward().is_none());
5491
5492 // Move the cursor a large distance.
5493 // The history can jump back to the previous position.
5494 editor.select_display_ranges(&[DisplayPoint::new(13, 0)..DisplayPoint::new(13, 3)], cx);
5495 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
5496 editor.navigate(nav_entry.data.unwrap(), cx);
5497 assert_eq!(nav_entry.item_view.id(), cx.view_id());
5498 assert_eq!(
5499 editor.selected_display_ranges(cx),
5500 &[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)]
5501 );
5502
5503 // Move the cursor a small distance via the mouse.
5504 // Nothing is added to the navigation history.
5505 editor.begin_selection(DisplayPoint::new(5, 0), false, 1, cx);
5506 editor.end_selection(cx);
5507 assert_eq!(
5508 editor.selected_display_ranges(cx),
5509 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
5510 );
5511 assert!(nav_history.borrow_mut().pop_backward().is_none());
5512
5513 // Move the cursor a large distance via the mouse.
5514 // The history can jump back to the previous position.
5515 editor.begin_selection(DisplayPoint::new(15, 0), false, 1, cx);
5516 editor.end_selection(cx);
5517 assert_eq!(
5518 editor.selected_display_ranges(cx),
5519 &[DisplayPoint::new(15, 0)..DisplayPoint::new(15, 0)]
5520 );
5521 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
5522 editor.navigate(nav_entry.data.unwrap(), cx);
5523 assert_eq!(nav_entry.item_view.id(), cx.view_id());
5524 assert_eq!(
5525 editor.selected_display_ranges(cx),
5526 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
5527 );
5528
5529 editor
5530 });
5531 }
5532
5533 #[gpui::test]
5534 fn test_cancel(cx: &mut gpui::MutableAppContext) {
5535 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
5536 let settings = EditorSettings::test(cx);
5537 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5538
5539 view.update(cx, |view, cx| {
5540 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
5541 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
5542 view.end_selection(cx);
5543
5544 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
5545 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
5546 view.end_selection(cx);
5547 assert_eq!(
5548 view.selected_display_ranges(cx),
5549 [
5550 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5551 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
5552 ]
5553 );
5554 });
5555
5556 view.update(cx, |view, cx| {
5557 view.cancel(&Cancel, cx);
5558 assert_eq!(
5559 view.selected_display_ranges(cx),
5560 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
5561 );
5562 });
5563
5564 view.update(cx, |view, cx| {
5565 view.cancel(&Cancel, cx);
5566 assert_eq!(
5567 view.selected_display_ranges(cx),
5568 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
5569 );
5570 });
5571 }
5572
5573 #[gpui::test]
5574 fn test_fold(cx: &mut gpui::MutableAppContext) {
5575 let buffer = MultiBuffer::build_simple(
5576 &"
5577 impl Foo {
5578 // Hello!
5579
5580 fn a() {
5581 1
5582 }
5583
5584 fn b() {
5585 2
5586 }
5587
5588 fn c() {
5589 3
5590 }
5591 }
5592 "
5593 .unindent(),
5594 cx,
5595 );
5596 let settings = EditorSettings::test(&cx);
5597 let (_, view) = cx.add_window(Default::default(), |cx| {
5598 build_editor(buffer.clone(), settings, cx)
5599 });
5600
5601 view.update(cx, |view, cx| {
5602 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx);
5603 view.fold(&Fold, cx);
5604 assert_eq!(
5605 view.display_text(cx),
5606 "
5607 impl Foo {
5608 // Hello!
5609
5610 fn a() {
5611 1
5612 }
5613
5614 fn b() {…
5615 }
5616
5617 fn c() {…
5618 }
5619 }
5620 "
5621 .unindent(),
5622 );
5623
5624 view.fold(&Fold, cx);
5625 assert_eq!(
5626 view.display_text(cx),
5627 "
5628 impl Foo {…
5629 }
5630 "
5631 .unindent(),
5632 );
5633
5634 view.unfold(&Unfold, cx);
5635 assert_eq!(
5636 view.display_text(cx),
5637 "
5638 impl Foo {
5639 // Hello!
5640
5641 fn a() {
5642 1
5643 }
5644
5645 fn b() {…
5646 }
5647
5648 fn c() {…
5649 }
5650 }
5651 "
5652 .unindent(),
5653 );
5654
5655 view.unfold(&Unfold, cx);
5656 assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text());
5657 });
5658 }
5659
5660 #[gpui::test]
5661 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
5662 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
5663 let settings = EditorSettings::test(&cx);
5664 let (_, view) = cx.add_window(Default::default(), |cx| {
5665 build_editor(buffer.clone(), settings, cx)
5666 });
5667
5668 buffer.update(cx, |buffer, cx| {
5669 buffer.edit(
5670 vec![
5671 Point::new(1, 0)..Point::new(1, 0),
5672 Point::new(1, 1)..Point::new(1, 1),
5673 ],
5674 "\t",
5675 cx,
5676 );
5677 });
5678
5679 view.update(cx, |view, cx| {
5680 assert_eq!(
5681 view.selected_display_ranges(cx),
5682 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
5683 );
5684
5685 view.move_down(&MoveDown, cx);
5686 assert_eq!(
5687 view.selected_display_ranges(cx),
5688 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
5689 );
5690
5691 view.move_right(&MoveRight, cx);
5692 assert_eq!(
5693 view.selected_display_ranges(cx),
5694 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
5695 );
5696
5697 view.move_left(&MoveLeft, cx);
5698 assert_eq!(
5699 view.selected_display_ranges(cx),
5700 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
5701 );
5702
5703 view.move_up(&MoveUp, cx);
5704 assert_eq!(
5705 view.selected_display_ranges(cx),
5706 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
5707 );
5708
5709 view.move_to_end(&MoveToEnd, cx);
5710 assert_eq!(
5711 view.selected_display_ranges(cx),
5712 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
5713 );
5714
5715 view.move_to_beginning(&MoveToBeginning, cx);
5716 assert_eq!(
5717 view.selected_display_ranges(cx),
5718 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
5719 );
5720
5721 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx);
5722 view.select_to_beginning(&SelectToBeginning, cx);
5723 assert_eq!(
5724 view.selected_display_ranges(cx),
5725 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
5726 );
5727
5728 view.select_to_end(&SelectToEnd, cx);
5729 assert_eq!(
5730 view.selected_display_ranges(cx),
5731 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
5732 );
5733 });
5734 }
5735
5736 #[gpui::test]
5737 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
5738 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
5739 let settings = EditorSettings::test(&cx);
5740 let (_, view) = cx.add_window(Default::default(), |cx| {
5741 build_editor(buffer.clone(), settings, cx)
5742 });
5743
5744 assert_eq!('ⓐ'.len_utf8(), 3);
5745 assert_eq!('α'.len_utf8(), 2);
5746
5747 view.update(cx, |view, cx| {
5748 view.fold_ranges(
5749 vec![
5750 Point::new(0, 6)..Point::new(0, 12),
5751 Point::new(1, 2)..Point::new(1, 4),
5752 Point::new(2, 4)..Point::new(2, 8),
5753 ],
5754 cx,
5755 );
5756 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
5757
5758 view.move_right(&MoveRight, cx);
5759 assert_eq!(
5760 view.selected_display_ranges(cx),
5761 &[empty_range(0, "ⓐ".len())]
5762 );
5763 view.move_right(&MoveRight, cx);
5764 assert_eq!(
5765 view.selected_display_ranges(cx),
5766 &[empty_range(0, "ⓐⓑ".len())]
5767 );
5768 view.move_right(&MoveRight, cx);
5769 assert_eq!(
5770 view.selected_display_ranges(cx),
5771 &[empty_range(0, "ⓐⓑ…".len())]
5772 );
5773
5774 view.move_down(&MoveDown, cx);
5775 assert_eq!(
5776 view.selected_display_ranges(cx),
5777 &[empty_range(1, "ab…".len())]
5778 );
5779 view.move_left(&MoveLeft, cx);
5780 assert_eq!(
5781 view.selected_display_ranges(cx),
5782 &[empty_range(1, "ab".len())]
5783 );
5784 view.move_left(&MoveLeft, cx);
5785 assert_eq!(
5786 view.selected_display_ranges(cx),
5787 &[empty_range(1, "a".len())]
5788 );
5789
5790 view.move_down(&MoveDown, cx);
5791 assert_eq!(
5792 view.selected_display_ranges(cx),
5793 &[empty_range(2, "α".len())]
5794 );
5795 view.move_right(&MoveRight, cx);
5796 assert_eq!(
5797 view.selected_display_ranges(cx),
5798 &[empty_range(2, "αβ".len())]
5799 );
5800 view.move_right(&MoveRight, cx);
5801 assert_eq!(
5802 view.selected_display_ranges(cx),
5803 &[empty_range(2, "αβ…".len())]
5804 );
5805 view.move_right(&MoveRight, cx);
5806 assert_eq!(
5807 view.selected_display_ranges(cx),
5808 &[empty_range(2, "αβ…ε".len())]
5809 );
5810
5811 view.move_up(&MoveUp, cx);
5812 assert_eq!(
5813 view.selected_display_ranges(cx),
5814 &[empty_range(1, "ab…e".len())]
5815 );
5816 view.move_up(&MoveUp, cx);
5817 assert_eq!(
5818 view.selected_display_ranges(cx),
5819 &[empty_range(0, "ⓐⓑ…ⓔ".len())]
5820 );
5821 view.move_left(&MoveLeft, cx);
5822 assert_eq!(
5823 view.selected_display_ranges(cx),
5824 &[empty_range(0, "ⓐⓑ…".len())]
5825 );
5826 view.move_left(&MoveLeft, cx);
5827 assert_eq!(
5828 view.selected_display_ranges(cx),
5829 &[empty_range(0, "ⓐⓑ".len())]
5830 );
5831 view.move_left(&MoveLeft, cx);
5832 assert_eq!(
5833 view.selected_display_ranges(cx),
5834 &[empty_range(0, "ⓐ".len())]
5835 );
5836 });
5837 }
5838
5839 #[gpui::test]
5840 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
5841 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
5842 let settings = EditorSettings::test(&cx);
5843 let (_, view) = cx.add_window(Default::default(), |cx| {
5844 build_editor(buffer.clone(), settings, cx)
5845 });
5846 view.update(cx, |view, cx| {
5847 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx);
5848 view.move_down(&MoveDown, cx);
5849 assert_eq!(
5850 view.selected_display_ranges(cx),
5851 &[empty_range(1, "abcd".len())]
5852 );
5853
5854 view.move_down(&MoveDown, cx);
5855 assert_eq!(
5856 view.selected_display_ranges(cx),
5857 &[empty_range(2, "αβγ".len())]
5858 );
5859
5860 view.move_down(&MoveDown, cx);
5861 assert_eq!(
5862 view.selected_display_ranges(cx),
5863 &[empty_range(3, "abcd".len())]
5864 );
5865
5866 view.move_down(&MoveDown, cx);
5867 assert_eq!(
5868 view.selected_display_ranges(cx),
5869 &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
5870 );
5871
5872 view.move_up(&MoveUp, cx);
5873 assert_eq!(
5874 view.selected_display_ranges(cx),
5875 &[empty_range(3, "abcd".len())]
5876 );
5877
5878 view.move_up(&MoveUp, cx);
5879 assert_eq!(
5880 view.selected_display_ranges(cx),
5881 &[empty_range(2, "αβγ".len())]
5882 );
5883 });
5884 }
5885
5886 #[gpui::test]
5887 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
5888 let buffer = MultiBuffer::build_simple("abc\n def", cx);
5889 let settings = EditorSettings::test(&cx);
5890 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5891 view.update(cx, |view, cx| {
5892 view.select_display_ranges(
5893 &[
5894 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5895 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
5896 ],
5897 cx,
5898 );
5899 });
5900
5901 view.update(cx, |view, cx| {
5902 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
5903 assert_eq!(
5904 view.selected_display_ranges(cx),
5905 &[
5906 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5907 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5908 ]
5909 );
5910 });
5911
5912 view.update(cx, |view, cx| {
5913 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
5914 assert_eq!(
5915 view.selected_display_ranges(cx),
5916 &[
5917 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5918 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5919 ]
5920 );
5921 });
5922
5923 view.update(cx, |view, cx| {
5924 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
5925 assert_eq!(
5926 view.selected_display_ranges(cx),
5927 &[
5928 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5929 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5930 ]
5931 );
5932 });
5933
5934 view.update(cx, |view, cx| {
5935 view.move_to_end_of_line(&MoveToEndOfLine, cx);
5936 assert_eq!(
5937 view.selected_display_ranges(cx),
5938 &[
5939 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5940 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
5941 ]
5942 );
5943 });
5944
5945 // Moving to the end of line again is a no-op.
5946 view.update(cx, |view, cx| {
5947 view.move_to_end_of_line(&MoveToEndOfLine, cx);
5948 assert_eq!(
5949 view.selected_display_ranges(cx),
5950 &[
5951 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5952 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
5953 ]
5954 );
5955 });
5956
5957 view.update(cx, |view, cx| {
5958 view.move_left(&MoveLeft, cx);
5959 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
5960 assert_eq!(
5961 view.selected_display_ranges(cx),
5962 &[
5963 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
5964 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
5965 ]
5966 );
5967 });
5968
5969 view.update(cx, |view, cx| {
5970 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
5971 assert_eq!(
5972 view.selected_display_ranges(cx),
5973 &[
5974 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
5975 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
5976 ]
5977 );
5978 });
5979
5980 view.update(cx, |view, cx| {
5981 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
5982 assert_eq!(
5983 view.selected_display_ranges(cx),
5984 &[
5985 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
5986 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
5987 ]
5988 );
5989 });
5990
5991 view.update(cx, |view, cx| {
5992 view.select_to_end_of_line(&SelectToEndOfLine(true), cx);
5993 assert_eq!(
5994 view.selected_display_ranges(cx),
5995 &[
5996 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
5997 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
5998 ]
5999 );
6000 });
6001
6002 view.update(cx, |view, cx| {
6003 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
6004 assert_eq!(view.display_text(cx), "ab\n de");
6005 assert_eq!(
6006 view.selected_display_ranges(cx),
6007 &[
6008 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6009 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
6010 ]
6011 );
6012 });
6013
6014 view.update(cx, |view, cx| {
6015 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
6016 assert_eq!(view.display_text(cx), "\n");
6017 assert_eq!(
6018 view.selected_display_ranges(cx),
6019 &[
6020 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6021 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6022 ]
6023 );
6024 });
6025 }
6026
6027 #[gpui::test]
6028 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
6029 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
6030 let settings = EditorSettings::test(&cx);
6031 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6032 view.update(cx, |view, cx| {
6033 view.select_display_ranges(
6034 &[
6035 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
6036 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
6037 ],
6038 cx,
6039 );
6040 });
6041
6042 view.update(cx, |view, cx| {
6043 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6044 assert_eq!(
6045 view.selected_display_ranges(cx),
6046 &[
6047 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
6048 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
6049 ]
6050 );
6051 });
6052
6053 view.update(cx, |view, cx| {
6054 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6055 assert_eq!(
6056 view.selected_display_ranges(cx),
6057 &[
6058 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
6059 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2),
6060 ]
6061 );
6062 });
6063
6064 view.update(cx, |view, cx| {
6065 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6066 assert_eq!(
6067 view.selected_display_ranges(cx),
6068 &[
6069 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
6070 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
6071 ]
6072 );
6073 });
6074
6075 view.update(cx, |view, cx| {
6076 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6077 assert_eq!(
6078 view.selected_display_ranges(cx),
6079 &[
6080 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6081 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6082 ]
6083 );
6084 });
6085
6086 view.update(cx, |view, cx| {
6087 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6088 assert_eq!(
6089 view.selected_display_ranges(cx),
6090 &[
6091 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6092 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 23),
6093 ]
6094 );
6095 });
6096
6097 view.update(cx, |view, cx| {
6098 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6099 assert_eq!(
6100 view.selected_display_ranges(cx),
6101 &[
6102 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6103 DisplayPoint::new(0, 24)..DisplayPoint::new(0, 24),
6104 ]
6105 );
6106 });
6107
6108 view.update(cx, |view, cx| {
6109 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6110 assert_eq!(
6111 view.selected_display_ranges(cx),
6112 &[
6113 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
6114 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6115 ]
6116 );
6117 });
6118
6119 view.update(cx, |view, cx| {
6120 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6121 assert_eq!(
6122 view.selected_display_ranges(cx),
6123 &[
6124 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
6125 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
6126 ]
6127 );
6128 });
6129
6130 view.update(cx, |view, cx| {
6131 view.move_right(&MoveRight, cx);
6132 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
6133 assert_eq!(
6134 view.selected_display_ranges(cx),
6135 &[
6136 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
6137 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
6138 ]
6139 );
6140 });
6141
6142 view.update(cx, |view, cx| {
6143 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
6144 assert_eq!(
6145 view.selected_display_ranges(cx),
6146 &[
6147 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 7),
6148 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 2),
6149 ]
6150 );
6151 });
6152
6153 view.update(cx, |view, cx| {
6154 view.select_to_next_word_boundary(&SelectToNextWordBoundary, cx);
6155 assert_eq!(
6156 view.selected_display_ranges(cx),
6157 &[
6158 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
6159 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
6160 ]
6161 );
6162 });
6163 }
6164
6165 #[gpui::test]
6166 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
6167 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
6168 let settings = EditorSettings::test(&cx);
6169 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6170
6171 view.update(cx, |view, cx| {
6172 view.set_wrap_width(Some(140.), cx);
6173 assert_eq!(
6174 view.display_text(cx),
6175 "use one::{\n two::three::\n four::five\n};"
6176 );
6177
6178 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx);
6179
6180 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6181 assert_eq!(
6182 view.selected_display_ranges(cx),
6183 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
6184 );
6185
6186 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6187 assert_eq!(
6188 view.selected_display_ranges(cx),
6189 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
6190 );
6191
6192 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6193 assert_eq!(
6194 view.selected_display_ranges(cx),
6195 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
6196 );
6197
6198 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6199 assert_eq!(
6200 view.selected_display_ranges(cx),
6201 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
6202 );
6203
6204 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6205 assert_eq!(
6206 view.selected_display_ranges(cx),
6207 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
6208 );
6209
6210 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6211 assert_eq!(
6212 view.selected_display_ranges(cx),
6213 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
6214 );
6215 });
6216 }
6217
6218 #[gpui::test]
6219 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
6220 let buffer = MultiBuffer::build_simple("one two three four", cx);
6221 let settings = EditorSettings::test(&cx);
6222 let (_, view) = cx.add_window(Default::default(), |cx| {
6223 build_editor(buffer.clone(), settings, cx)
6224 });
6225
6226 view.update(cx, |view, cx| {
6227 view.select_display_ranges(
6228 &[
6229 // an empty selection - the preceding word fragment is deleted
6230 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6231 // characters selected - they are deleted
6232 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
6233 ],
6234 cx,
6235 );
6236 view.delete_to_previous_word_boundary(&DeleteToPreviousWordBoundary, cx);
6237 });
6238
6239 assert_eq!(buffer.read(cx).read(cx).text(), "e two te four");
6240
6241 view.update(cx, |view, cx| {
6242 view.select_display_ranges(
6243 &[
6244 // an empty selection - the following word fragment is deleted
6245 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6246 // characters selected - they are deleted
6247 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
6248 ],
6249 cx,
6250 );
6251 view.delete_to_next_word_boundary(&DeleteToNextWordBoundary, cx);
6252 });
6253
6254 assert_eq!(buffer.read(cx).read(cx).text(), "e t te our");
6255 }
6256
6257 #[gpui::test]
6258 fn test_newline(cx: &mut gpui::MutableAppContext) {
6259 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
6260 let settings = EditorSettings::test(&cx);
6261 let (_, view) = cx.add_window(Default::default(), |cx| {
6262 build_editor(buffer.clone(), settings, cx)
6263 });
6264
6265 view.update(cx, |view, cx| {
6266 view.select_display_ranges(
6267 &[
6268 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6269 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6270 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
6271 ],
6272 cx,
6273 );
6274
6275 view.newline(&Newline, cx);
6276 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
6277 });
6278 }
6279
6280 #[gpui::test]
6281 fn test_newline_with_old_selections(cx: &mut gpui::MutableAppContext) {
6282 let buffer = MultiBuffer::build_simple(
6283 "
6284 a
6285 b(
6286 X
6287 )
6288 c(
6289 X
6290 )
6291 "
6292 .unindent()
6293 .as_str(),
6294 cx,
6295 );
6296
6297 let settings = EditorSettings::test(&cx);
6298 let (_, editor) = cx.add_window(Default::default(), |cx| {
6299 let mut editor = build_editor(buffer.clone(), settings, cx);
6300 editor.select_ranges(
6301 [
6302 Point::new(2, 4)..Point::new(2, 5),
6303 Point::new(5, 4)..Point::new(5, 5),
6304 ],
6305 None,
6306 cx,
6307 );
6308 editor
6309 });
6310
6311 // Edit the buffer directly, deleting ranges surrounding the editor's selections
6312 buffer.update(cx, |buffer, cx| {
6313 buffer.edit(
6314 [
6315 Point::new(1, 2)..Point::new(3, 0),
6316 Point::new(4, 2)..Point::new(6, 0),
6317 ],
6318 "",
6319 cx,
6320 );
6321 assert_eq!(
6322 buffer.read(cx).text(),
6323 "
6324 a
6325 b()
6326 c()
6327 "
6328 .unindent()
6329 );
6330 });
6331
6332 editor.update(cx, |editor, cx| {
6333 assert_eq!(
6334 editor.selected_ranges(cx),
6335 &[
6336 Point::new(1, 2)..Point::new(1, 2),
6337 Point::new(2, 2)..Point::new(2, 2),
6338 ],
6339 );
6340
6341 editor.newline(&Newline, cx);
6342 assert_eq!(
6343 editor.text(cx),
6344 "
6345 a
6346 b(
6347 )
6348 c(
6349 )
6350 "
6351 .unindent()
6352 );
6353
6354 // The selections are moved after the inserted newlines
6355 assert_eq!(
6356 editor.selected_ranges(cx),
6357 &[
6358 Point::new(2, 0)..Point::new(2, 0),
6359 Point::new(4, 0)..Point::new(4, 0),
6360 ],
6361 );
6362 });
6363 }
6364
6365 #[gpui::test]
6366 fn test_insert_with_old_selections(cx: &mut gpui::MutableAppContext) {
6367 let buffer = MultiBuffer::build_simple("a( X ), b( Y ), c( Z )", cx);
6368
6369 let settings = EditorSettings::test(&cx);
6370 let (_, editor) = cx.add_window(Default::default(), |cx| {
6371 let mut editor = build_editor(buffer.clone(), settings, cx);
6372 editor.select_ranges([3..4, 11..12, 19..20], None, cx);
6373 editor
6374 });
6375
6376 // Edit the buffer directly, deleting ranges surrounding the editor's selections
6377 buffer.update(cx, |buffer, cx| {
6378 buffer.edit([2..5, 10..13, 18..21], "", cx);
6379 assert_eq!(buffer.read(cx).text(), "a(), b(), c()".unindent());
6380 });
6381
6382 editor.update(cx, |editor, cx| {
6383 assert_eq!(editor.selected_ranges(cx), &[2..2, 7..7, 12..12],);
6384
6385 editor.insert("Z", cx);
6386 assert_eq!(editor.text(cx), "a(Z), b(Z), c(Z)");
6387
6388 // The selections are moved after the inserted characters
6389 assert_eq!(editor.selected_ranges(cx), &[3..3, 9..9, 15..15],);
6390 });
6391 }
6392
6393 #[gpui::test]
6394 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
6395 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
6396 let settings = EditorSettings::test(&cx);
6397 let (_, view) = cx.add_window(Default::default(), |cx| {
6398 build_editor(buffer.clone(), settings, cx)
6399 });
6400
6401 view.update(cx, |view, cx| {
6402 // two selections on the same line
6403 view.select_display_ranges(
6404 &[
6405 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
6406 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
6407 ],
6408 cx,
6409 );
6410
6411 // indent from mid-tabstop to full tabstop
6412 view.tab(&Tab, cx);
6413 assert_eq!(view.text(cx), " one two\nthree\n four");
6414 assert_eq!(
6415 view.selected_display_ranges(cx),
6416 &[
6417 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
6418 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
6419 ]
6420 );
6421
6422 // outdent from 1 tabstop to 0 tabstops
6423 view.outdent(&Outdent, cx);
6424 assert_eq!(view.text(cx), "one two\nthree\n four");
6425 assert_eq!(
6426 view.selected_display_ranges(cx),
6427 &[
6428 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
6429 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
6430 ]
6431 );
6432
6433 // select across line ending
6434 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx);
6435
6436 // indent and outdent affect only the preceding line
6437 view.tab(&Tab, cx);
6438 assert_eq!(view.text(cx), "one two\n three\n four");
6439 assert_eq!(
6440 view.selected_display_ranges(cx),
6441 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
6442 );
6443 view.outdent(&Outdent, cx);
6444 assert_eq!(view.text(cx), "one two\nthree\n four");
6445 assert_eq!(
6446 view.selected_display_ranges(cx),
6447 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
6448 );
6449
6450 // Ensure that indenting/outdenting works when the cursor is at column 0.
6451 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
6452 view.tab(&Tab, cx);
6453 assert_eq!(view.text(cx), "one two\n three\n four");
6454 assert_eq!(
6455 view.selected_display_ranges(cx),
6456 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
6457 );
6458
6459 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
6460 view.outdent(&Outdent, cx);
6461 assert_eq!(view.text(cx), "one two\nthree\n four");
6462 assert_eq!(
6463 view.selected_display_ranges(cx),
6464 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6465 );
6466 });
6467 }
6468
6469 #[gpui::test]
6470 fn test_backspace(cx: &mut gpui::MutableAppContext) {
6471 let buffer =
6472 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
6473 let settings = EditorSettings::test(&cx);
6474 let (_, view) = cx.add_window(Default::default(), |cx| {
6475 build_editor(buffer.clone(), settings, cx)
6476 });
6477
6478 view.update(cx, |view, cx| {
6479 view.select_display_ranges(
6480 &[
6481 // an empty selection - the preceding character is deleted
6482 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6483 // one character selected - it is deleted
6484 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
6485 // a line suffix selected - it is deleted
6486 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
6487 ],
6488 cx,
6489 );
6490 view.backspace(&Backspace, cx);
6491 });
6492
6493 assert_eq!(
6494 buffer.read(cx).read(cx).text(),
6495 "oe two three\nfou five six\nseven ten\n"
6496 );
6497 }
6498
6499 #[gpui::test]
6500 fn test_delete(cx: &mut gpui::MutableAppContext) {
6501 let buffer =
6502 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
6503 let settings = EditorSettings::test(&cx);
6504 let (_, view) = cx.add_window(Default::default(), |cx| {
6505 build_editor(buffer.clone(), settings, cx)
6506 });
6507
6508 view.update(cx, |view, cx| {
6509 view.select_display_ranges(
6510 &[
6511 // an empty selection - the following character is deleted
6512 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6513 // one character selected - it is deleted
6514 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
6515 // a line suffix selected - it is deleted
6516 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
6517 ],
6518 cx,
6519 );
6520 view.delete(&Delete, cx);
6521 });
6522
6523 assert_eq!(
6524 buffer.read(cx).read(cx).text(),
6525 "on two three\nfou five six\nseven ten\n"
6526 );
6527 }
6528
6529 #[gpui::test]
6530 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
6531 let settings = EditorSettings::test(&cx);
6532 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
6533 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6534 view.update(cx, |view, cx| {
6535 view.select_display_ranges(
6536 &[
6537 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6538 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
6539 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6540 ],
6541 cx,
6542 );
6543 view.delete_line(&DeleteLine, cx);
6544 assert_eq!(view.display_text(cx), "ghi");
6545 assert_eq!(
6546 view.selected_display_ranges(cx),
6547 vec![
6548 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6549 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
6550 ]
6551 );
6552 });
6553
6554 let settings = EditorSettings::test(&cx);
6555 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
6556 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6557 view.update(cx, |view, cx| {
6558 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx);
6559 view.delete_line(&DeleteLine, cx);
6560 assert_eq!(view.display_text(cx), "ghi\n");
6561 assert_eq!(
6562 view.selected_display_ranges(cx),
6563 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
6564 );
6565 });
6566 }
6567
6568 #[gpui::test]
6569 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
6570 let settings = EditorSettings::test(&cx);
6571 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
6572 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6573 view.update(cx, |view, cx| {
6574 view.select_display_ranges(
6575 &[
6576 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
6577 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6578 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6579 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6580 ],
6581 cx,
6582 );
6583 view.duplicate_line(&DuplicateLine, cx);
6584 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
6585 assert_eq!(
6586 view.selected_display_ranges(cx),
6587 vec![
6588 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
6589 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6590 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6591 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
6592 ]
6593 );
6594 });
6595
6596 let settings = EditorSettings::test(&cx);
6597 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
6598 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6599 view.update(cx, |view, cx| {
6600 view.select_display_ranges(
6601 &[
6602 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
6603 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
6604 ],
6605 cx,
6606 );
6607 view.duplicate_line(&DuplicateLine, cx);
6608 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
6609 assert_eq!(
6610 view.selected_display_ranges(cx),
6611 vec![
6612 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
6613 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
6614 ]
6615 );
6616 });
6617 }
6618
6619 #[gpui::test]
6620 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
6621 let settings = EditorSettings::test(&cx);
6622 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
6623 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6624 view.update(cx, |view, cx| {
6625 view.fold_ranges(
6626 vec![
6627 Point::new(0, 2)..Point::new(1, 2),
6628 Point::new(2, 3)..Point::new(4, 1),
6629 Point::new(7, 0)..Point::new(8, 4),
6630 ],
6631 cx,
6632 );
6633 view.select_display_ranges(
6634 &[
6635 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6636 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
6637 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
6638 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
6639 ],
6640 cx,
6641 );
6642 assert_eq!(
6643 view.display_text(cx),
6644 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
6645 );
6646
6647 view.move_line_up(&MoveLineUp, cx);
6648 assert_eq!(
6649 view.display_text(cx),
6650 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
6651 );
6652 assert_eq!(
6653 view.selected_display_ranges(cx),
6654 vec![
6655 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6656 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6657 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
6658 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
6659 ]
6660 );
6661 });
6662
6663 view.update(cx, |view, cx| {
6664 view.move_line_down(&MoveLineDown, cx);
6665 assert_eq!(
6666 view.display_text(cx),
6667 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
6668 );
6669 assert_eq!(
6670 view.selected_display_ranges(cx),
6671 vec![
6672 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6673 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
6674 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
6675 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
6676 ]
6677 );
6678 });
6679
6680 view.update(cx, |view, cx| {
6681 view.move_line_down(&MoveLineDown, cx);
6682 assert_eq!(
6683 view.display_text(cx),
6684 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
6685 );
6686 assert_eq!(
6687 view.selected_display_ranges(cx),
6688 vec![
6689 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6690 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
6691 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
6692 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
6693 ]
6694 );
6695 });
6696
6697 view.update(cx, |view, cx| {
6698 view.move_line_up(&MoveLineUp, cx);
6699 assert_eq!(
6700 view.display_text(cx),
6701 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
6702 );
6703 assert_eq!(
6704 view.selected_display_ranges(cx),
6705 vec![
6706 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6707 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6708 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
6709 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
6710 ]
6711 );
6712 });
6713 }
6714
6715 #[gpui::test]
6716 fn test_move_line_up_down_with_blocks(cx: &mut gpui::MutableAppContext) {
6717 let settings = EditorSettings::test(&cx);
6718 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
6719 let snapshot = buffer.read(cx).snapshot(cx);
6720 let (_, editor) =
6721 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6722 editor.update(cx, |editor, cx| {
6723 editor.insert_blocks(
6724 [BlockProperties {
6725 position: snapshot.anchor_after(Point::new(2, 0)),
6726 disposition: BlockDisposition::Below,
6727 height: 1,
6728 render: Arc::new(|_| Empty::new().boxed()),
6729 }],
6730 cx,
6731 );
6732 editor.select_ranges([Point::new(2, 0)..Point::new(2, 0)], None, cx);
6733 editor.move_line_down(&MoveLineDown, cx);
6734 });
6735 }
6736
6737 #[gpui::test]
6738 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
6739 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
6740 let settings = EditorSettings::test(&cx);
6741 let view = cx
6742 .add_window(Default::default(), |cx| {
6743 build_editor(buffer.clone(), settings, cx)
6744 })
6745 .1;
6746
6747 // Cut with three selections. Clipboard text is divided into three slices.
6748 view.update(cx, |view, cx| {
6749 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
6750 view.cut(&Cut, cx);
6751 assert_eq!(view.display_text(cx), "two four six ");
6752 });
6753
6754 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
6755 view.update(cx, |view, cx| {
6756 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
6757 view.paste(&Paste, cx);
6758 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
6759 assert_eq!(
6760 view.selected_display_ranges(cx),
6761 &[
6762 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
6763 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
6764 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
6765 ]
6766 );
6767 });
6768
6769 // Paste again but with only two cursors. Since the number of cursors doesn't
6770 // match the number of slices in the clipboard, the entire clipboard text
6771 // is pasted at each cursor.
6772 view.update(cx, |view, cx| {
6773 view.select_ranges(vec![0..0, 31..31], None, cx);
6774 view.handle_input(&Input("( ".into()), cx);
6775 view.paste(&Paste, cx);
6776 view.handle_input(&Input(") ".into()), cx);
6777 assert_eq!(
6778 view.display_text(cx),
6779 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
6780 );
6781 });
6782
6783 view.update(cx, |view, cx| {
6784 view.select_ranges(vec![0..0], None, cx);
6785 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
6786 assert_eq!(
6787 view.display_text(cx),
6788 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
6789 );
6790 });
6791
6792 // Cut with three selections, one of which is full-line.
6793 view.update(cx, |view, cx| {
6794 view.select_display_ranges(
6795 &[
6796 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
6797 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6798 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
6799 ],
6800 cx,
6801 );
6802 view.cut(&Cut, cx);
6803 assert_eq!(
6804 view.display_text(cx),
6805 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
6806 );
6807 });
6808
6809 // Paste with three selections, noticing how the copied selection that was full-line
6810 // gets inserted before the second cursor.
6811 view.update(cx, |view, cx| {
6812 view.select_display_ranges(
6813 &[
6814 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6815 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6816 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
6817 ],
6818 cx,
6819 );
6820 view.paste(&Paste, cx);
6821 assert_eq!(
6822 view.display_text(cx),
6823 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
6824 );
6825 assert_eq!(
6826 view.selected_display_ranges(cx),
6827 &[
6828 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6829 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6830 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
6831 ]
6832 );
6833 });
6834
6835 // Copy with a single cursor only, which writes the whole line into the clipboard.
6836 view.update(cx, |view, cx| {
6837 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx);
6838 view.copy(&Copy, cx);
6839 });
6840
6841 // Paste with three selections, noticing how the copied full-line selection is inserted
6842 // before the empty selections but replaces the selection that is non-empty.
6843 view.update(cx, |view, cx| {
6844 view.select_display_ranges(
6845 &[
6846 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6847 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
6848 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6849 ],
6850 cx,
6851 );
6852 view.paste(&Paste, cx);
6853 assert_eq!(
6854 view.display_text(cx),
6855 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
6856 );
6857 assert_eq!(
6858 view.selected_display_ranges(cx),
6859 &[
6860 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6861 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6862 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
6863 ]
6864 );
6865 });
6866 }
6867
6868 #[gpui::test]
6869 fn test_select_all(cx: &mut gpui::MutableAppContext) {
6870 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
6871 let settings = EditorSettings::test(&cx);
6872 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6873 view.update(cx, |view, cx| {
6874 view.select_all(&SelectAll, cx);
6875 assert_eq!(
6876 view.selected_display_ranges(cx),
6877 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
6878 );
6879 });
6880 }
6881
6882 #[gpui::test]
6883 fn test_select_line(cx: &mut gpui::MutableAppContext) {
6884 let settings = EditorSettings::test(&cx);
6885 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
6886 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6887 view.update(cx, |view, cx| {
6888 view.select_display_ranges(
6889 &[
6890 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
6891 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6892 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6893 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
6894 ],
6895 cx,
6896 );
6897 view.select_line(&SelectLine, cx);
6898 assert_eq!(
6899 view.selected_display_ranges(cx),
6900 vec![
6901 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
6902 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
6903 ]
6904 );
6905 });
6906
6907 view.update(cx, |view, cx| {
6908 view.select_line(&SelectLine, cx);
6909 assert_eq!(
6910 view.selected_display_ranges(cx),
6911 vec![
6912 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
6913 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
6914 ]
6915 );
6916 });
6917
6918 view.update(cx, |view, cx| {
6919 view.select_line(&SelectLine, cx);
6920 assert_eq!(
6921 view.selected_display_ranges(cx),
6922 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
6923 );
6924 });
6925 }
6926
6927 #[gpui::test]
6928 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
6929 let settings = EditorSettings::test(&cx);
6930 let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
6931 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6932 view.update(cx, |view, cx| {
6933 view.fold_ranges(
6934 vec![
6935 Point::new(0, 2)..Point::new(1, 2),
6936 Point::new(2, 3)..Point::new(4, 1),
6937 Point::new(7, 0)..Point::new(8, 4),
6938 ],
6939 cx,
6940 );
6941 view.select_display_ranges(
6942 &[
6943 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
6944 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6945 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6946 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
6947 ],
6948 cx,
6949 );
6950 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
6951 });
6952
6953 view.update(cx, |view, cx| {
6954 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
6955 assert_eq!(
6956 view.display_text(cx),
6957 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
6958 );
6959 assert_eq!(
6960 view.selected_display_ranges(cx),
6961 [
6962 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6963 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6964 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
6965 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
6966 ]
6967 );
6968 });
6969
6970 view.update(cx, |view, cx| {
6971 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx);
6972 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
6973 assert_eq!(
6974 view.display_text(cx),
6975 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
6976 );
6977 assert_eq!(
6978 view.selected_display_ranges(cx),
6979 [
6980 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
6981 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6982 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
6983 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
6984 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
6985 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
6986 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
6987 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
6988 ]
6989 );
6990 });
6991 }
6992
6993 #[gpui::test]
6994 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
6995 let settings = EditorSettings::test(&cx);
6996 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
6997 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6998
6999 view.update(cx, |view, cx| {
7000 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx);
7001 });
7002 view.update(cx, |view, cx| {
7003 view.add_selection_above(&AddSelectionAbove, cx);
7004 assert_eq!(
7005 view.selected_display_ranges(cx),
7006 vec![
7007 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7008 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
7009 ]
7010 );
7011 });
7012
7013 view.update(cx, |view, cx| {
7014 view.add_selection_above(&AddSelectionAbove, cx);
7015 assert_eq!(
7016 view.selected_display_ranges(cx),
7017 vec![
7018 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7019 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
7020 ]
7021 );
7022 });
7023
7024 view.update(cx, |view, cx| {
7025 view.add_selection_below(&AddSelectionBelow, cx);
7026 assert_eq!(
7027 view.selected_display_ranges(cx),
7028 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
7029 );
7030 });
7031
7032 view.update(cx, |view, cx| {
7033 view.add_selection_below(&AddSelectionBelow, cx);
7034 assert_eq!(
7035 view.selected_display_ranges(cx),
7036 vec![
7037 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7038 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
7039 ]
7040 );
7041 });
7042
7043 view.update(cx, |view, cx| {
7044 view.add_selection_below(&AddSelectionBelow, cx);
7045 assert_eq!(
7046 view.selected_display_ranges(cx),
7047 vec![
7048 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7049 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
7050 ]
7051 );
7052 });
7053
7054 view.update(cx, |view, cx| {
7055 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx);
7056 });
7057 view.update(cx, |view, cx| {
7058 view.add_selection_below(&AddSelectionBelow, cx);
7059 assert_eq!(
7060 view.selected_display_ranges(cx),
7061 vec![
7062 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7063 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
7064 ]
7065 );
7066 });
7067
7068 view.update(cx, |view, cx| {
7069 view.add_selection_below(&AddSelectionBelow, cx);
7070 assert_eq!(
7071 view.selected_display_ranges(cx),
7072 vec![
7073 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7074 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
7075 ]
7076 );
7077 });
7078
7079 view.update(cx, |view, cx| {
7080 view.add_selection_above(&AddSelectionAbove, cx);
7081 assert_eq!(
7082 view.selected_display_ranges(cx),
7083 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
7084 );
7085 });
7086
7087 view.update(cx, |view, cx| {
7088 view.add_selection_above(&AddSelectionAbove, cx);
7089 assert_eq!(
7090 view.selected_display_ranges(cx),
7091 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
7092 );
7093 });
7094
7095 view.update(cx, |view, cx| {
7096 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx);
7097 view.add_selection_below(&AddSelectionBelow, cx);
7098 assert_eq!(
7099 view.selected_display_ranges(cx),
7100 vec![
7101 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7102 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7103 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7104 ]
7105 );
7106 });
7107
7108 view.update(cx, |view, cx| {
7109 view.add_selection_below(&AddSelectionBelow, cx);
7110 assert_eq!(
7111 view.selected_display_ranges(cx),
7112 vec![
7113 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7114 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7115 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7116 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
7117 ]
7118 );
7119 });
7120
7121 view.update(cx, |view, cx| {
7122 view.add_selection_above(&AddSelectionAbove, cx);
7123 assert_eq!(
7124 view.selected_display_ranges(cx),
7125 vec![
7126 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7127 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7128 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7129 ]
7130 );
7131 });
7132
7133 view.update(cx, |view, cx| {
7134 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx);
7135 });
7136 view.update(cx, |view, cx| {
7137 view.add_selection_above(&AddSelectionAbove, cx);
7138 assert_eq!(
7139 view.selected_display_ranges(cx),
7140 vec![
7141 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
7142 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
7143 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
7144 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
7145 ]
7146 );
7147 });
7148
7149 view.update(cx, |view, cx| {
7150 view.add_selection_below(&AddSelectionBelow, cx);
7151 assert_eq!(
7152 view.selected_display_ranges(cx),
7153 vec![
7154 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
7155 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
7156 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
7157 ]
7158 );
7159 });
7160 }
7161
7162 #[gpui::test]
7163 async fn test_select_larger_smaller_syntax_node(mut cx: gpui::TestAppContext) {
7164 let settings = cx.read(EditorSettings::test);
7165 let language = Arc::new(Language::new(
7166 LanguageConfig::default(),
7167 Some(tree_sitter_rust::language()),
7168 ));
7169
7170 let text = r#"
7171 use mod1::mod2::{mod3, mod4};
7172
7173 fn fn_1(param1: bool, param2: &str) {
7174 let var1 = "text";
7175 }
7176 "#
7177 .unindent();
7178
7179 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7180 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7181 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7182 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
7183 .await;
7184
7185 view.update(&mut cx, |view, cx| {
7186 view.select_display_ranges(
7187 &[
7188 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7189 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7190 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7191 ],
7192 cx,
7193 );
7194 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7195 });
7196 assert_eq!(
7197 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7198 &[
7199 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
7200 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7201 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
7202 ]
7203 );
7204
7205 view.update(&mut cx, |view, cx| {
7206 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7207 });
7208 assert_eq!(
7209 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7210 &[
7211 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
7212 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
7213 ]
7214 );
7215
7216 view.update(&mut cx, |view, cx| {
7217 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7218 });
7219 assert_eq!(
7220 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7221 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
7222 );
7223
7224 // Trying to expand the selected syntax node one more time has no effect.
7225 view.update(&mut cx, |view, cx| {
7226 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7227 });
7228 assert_eq!(
7229 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7230 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
7231 );
7232
7233 view.update(&mut cx, |view, cx| {
7234 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7235 });
7236 assert_eq!(
7237 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7238 &[
7239 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
7240 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
7241 ]
7242 );
7243
7244 view.update(&mut cx, |view, cx| {
7245 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7246 });
7247 assert_eq!(
7248 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7249 &[
7250 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
7251 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7252 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
7253 ]
7254 );
7255
7256 view.update(&mut cx, |view, cx| {
7257 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7258 });
7259 assert_eq!(
7260 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7261 &[
7262 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7263 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7264 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7265 ]
7266 );
7267
7268 // Trying to shrink the selected syntax node one more time has no effect.
7269 view.update(&mut cx, |view, cx| {
7270 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7271 });
7272 assert_eq!(
7273 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7274 &[
7275 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7276 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7277 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7278 ]
7279 );
7280
7281 // Ensure that we keep expanding the selection if the larger selection starts or ends within
7282 // a fold.
7283 view.update(&mut cx, |view, cx| {
7284 view.fold_ranges(
7285 vec![
7286 Point::new(0, 21)..Point::new(0, 24),
7287 Point::new(3, 20)..Point::new(3, 22),
7288 ],
7289 cx,
7290 );
7291 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7292 });
7293 assert_eq!(
7294 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7295 &[
7296 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
7297 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7298 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
7299 ]
7300 );
7301 }
7302
7303 #[gpui::test]
7304 async fn test_autoindent_selections(mut cx: gpui::TestAppContext) {
7305 let settings = cx.read(EditorSettings::test);
7306 let language = Arc::new(
7307 Language::new(
7308 LanguageConfig {
7309 brackets: vec![
7310 BracketPair {
7311 start: "{".to_string(),
7312 end: "}".to_string(),
7313 close: false,
7314 newline: true,
7315 },
7316 BracketPair {
7317 start: "(".to_string(),
7318 end: ")".to_string(),
7319 close: false,
7320 newline: true,
7321 },
7322 ],
7323 ..Default::default()
7324 },
7325 Some(tree_sitter_rust::language()),
7326 )
7327 .with_indents_query(
7328 r#"
7329 (_ "(" ")" @end) @indent
7330 (_ "{" "}" @end) @indent
7331 "#,
7332 )
7333 .unwrap(),
7334 );
7335
7336 let text = "fn a() {}";
7337
7338 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7339 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7340 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7341 editor
7342 .condition(&cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
7343 .await;
7344
7345 editor.update(&mut cx, |editor, cx| {
7346 editor.select_ranges([5..5, 8..8, 9..9], None, cx);
7347 editor.newline(&Newline, cx);
7348 assert_eq!(editor.text(cx), "fn a(\n \n) {\n \n}\n");
7349 assert_eq!(
7350 editor.selected_ranges(cx),
7351 &[
7352 Point::new(1, 4)..Point::new(1, 4),
7353 Point::new(3, 4)..Point::new(3, 4),
7354 Point::new(5, 0)..Point::new(5, 0)
7355 ]
7356 );
7357 });
7358 }
7359
7360 #[gpui::test]
7361 async fn test_autoclose_pairs(mut cx: gpui::TestAppContext) {
7362 let settings = cx.read(EditorSettings::test);
7363 let language = Arc::new(Language::new(
7364 LanguageConfig {
7365 brackets: vec![
7366 BracketPair {
7367 start: "{".to_string(),
7368 end: "}".to_string(),
7369 close: true,
7370 newline: true,
7371 },
7372 BracketPair {
7373 start: "/*".to_string(),
7374 end: " */".to_string(),
7375 close: true,
7376 newline: true,
7377 },
7378 ],
7379 ..Default::default()
7380 },
7381 Some(tree_sitter_rust::language()),
7382 ));
7383
7384 let text = r#"
7385 a
7386
7387 /
7388
7389 "#
7390 .unindent();
7391
7392 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7393 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7394 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7395 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
7396 .await;
7397
7398 view.update(&mut cx, |view, cx| {
7399 view.select_display_ranges(
7400 &[
7401 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7402 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7403 ],
7404 cx,
7405 );
7406 view.handle_input(&Input("{".to_string()), cx);
7407 view.handle_input(&Input("{".to_string()), cx);
7408 view.handle_input(&Input("{".to_string()), cx);
7409 assert_eq!(
7410 view.text(cx),
7411 "
7412 {{{}}}
7413 {{{}}}
7414 /
7415
7416 "
7417 .unindent()
7418 );
7419
7420 view.move_right(&MoveRight, cx);
7421 view.handle_input(&Input("}".to_string()), cx);
7422 view.handle_input(&Input("}".to_string()), cx);
7423 view.handle_input(&Input("}".to_string()), cx);
7424 assert_eq!(
7425 view.text(cx),
7426 "
7427 {{{}}}}
7428 {{{}}}}
7429 /
7430
7431 "
7432 .unindent()
7433 );
7434
7435 view.undo(&Undo, cx);
7436 view.handle_input(&Input("/".to_string()), cx);
7437 view.handle_input(&Input("*".to_string()), cx);
7438 assert_eq!(
7439 view.text(cx),
7440 "
7441 /* */
7442 /* */
7443 /
7444
7445 "
7446 .unindent()
7447 );
7448
7449 view.undo(&Undo, cx);
7450 view.select_display_ranges(
7451 &[
7452 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7453 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7454 ],
7455 cx,
7456 );
7457 view.handle_input(&Input("*".to_string()), cx);
7458 assert_eq!(
7459 view.text(cx),
7460 "
7461 a
7462
7463 /*
7464 *
7465 "
7466 .unindent()
7467 );
7468 });
7469 }
7470
7471 #[gpui::test]
7472 async fn test_snippets(mut cx: gpui::TestAppContext) {
7473 let settings = cx.read(EditorSettings::test);
7474
7475 let text = "
7476 a. b
7477 a. b
7478 a. b
7479 "
7480 .unindent();
7481 let buffer = cx.update(|cx| MultiBuffer::build_simple(&text, cx));
7482 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7483
7484 editor.update(&mut cx, |editor, cx| {
7485 let buffer = &editor.snapshot(cx).buffer_snapshot;
7486 let snippet = Snippet::parse("f(${1:one}, ${2:two}, ${1:three})$0").unwrap();
7487 let insertion_ranges = [
7488 Point::new(0, 2).to_offset(buffer)..Point::new(0, 2).to_offset(buffer),
7489 Point::new(1, 2).to_offset(buffer)..Point::new(1, 2).to_offset(buffer),
7490 Point::new(2, 2).to_offset(buffer)..Point::new(2, 2).to_offset(buffer),
7491 ];
7492
7493 editor
7494 .insert_snippet(&insertion_ranges, snippet, cx)
7495 .unwrap();
7496 assert_eq!(
7497 editor.text(cx),
7498 "
7499 a.f(one, two, three) b
7500 a.f(one, two, three) b
7501 a.f(one, two, three) b
7502 "
7503 .unindent()
7504 );
7505 assert_eq!(
7506 editor.selected_ranges::<Point>(cx),
7507 &[
7508 Point::new(0, 4)..Point::new(0, 7),
7509 Point::new(0, 14)..Point::new(0, 19),
7510 Point::new(1, 4)..Point::new(1, 7),
7511 Point::new(1, 14)..Point::new(1, 19),
7512 Point::new(2, 4)..Point::new(2, 7),
7513 Point::new(2, 14)..Point::new(2, 19),
7514 ]
7515 );
7516
7517 // Can't move earlier than the first tab stop
7518 editor.move_to_prev_snippet_tabstop(cx);
7519 assert_eq!(
7520 editor.selected_ranges::<Point>(cx),
7521 &[
7522 Point::new(0, 4)..Point::new(0, 7),
7523 Point::new(0, 14)..Point::new(0, 19),
7524 Point::new(1, 4)..Point::new(1, 7),
7525 Point::new(1, 14)..Point::new(1, 19),
7526 Point::new(2, 4)..Point::new(2, 7),
7527 Point::new(2, 14)..Point::new(2, 19),
7528 ]
7529 );
7530
7531 assert!(editor.move_to_next_snippet_tabstop(cx));
7532 assert_eq!(
7533 editor.selected_ranges::<Point>(cx),
7534 &[
7535 Point::new(0, 9)..Point::new(0, 12),
7536 Point::new(1, 9)..Point::new(1, 12),
7537 Point::new(2, 9)..Point::new(2, 12)
7538 ]
7539 );
7540
7541 editor.move_to_prev_snippet_tabstop(cx);
7542 assert_eq!(
7543 editor.selected_ranges::<Point>(cx),
7544 &[
7545 Point::new(0, 4)..Point::new(0, 7),
7546 Point::new(0, 14)..Point::new(0, 19),
7547 Point::new(1, 4)..Point::new(1, 7),
7548 Point::new(1, 14)..Point::new(1, 19),
7549 Point::new(2, 4)..Point::new(2, 7),
7550 Point::new(2, 14)..Point::new(2, 19),
7551 ]
7552 );
7553
7554 assert!(editor.move_to_next_snippet_tabstop(cx));
7555 assert!(editor.move_to_next_snippet_tabstop(cx));
7556 assert_eq!(
7557 editor.selected_ranges::<Point>(cx),
7558 &[
7559 Point::new(0, 20)..Point::new(0, 20),
7560 Point::new(1, 20)..Point::new(1, 20),
7561 Point::new(2, 20)..Point::new(2, 20)
7562 ]
7563 );
7564
7565 // As soon as the last tab stop is reached, snippet state is gone
7566 editor.move_to_prev_snippet_tabstop(cx);
7567 assert_eq!(
7568 editor.selected_ranges::<Point>(cx),
7569 &[
7570 Point::new(0, 20)..Point::new(0, 20),
7571 Point::new(1, 20)..Point::new(1, 20),
7572 Point::new(2, 20)..Point::new(2, 20)
7573 ]
7574 );
7575 });
7576 }
7577
7578 #[gpui::test]
7579 async fn test_completion(mut cx: gpui::TestAppContext) {
7580 let settings = cx.read(EditorSettings::test);
7581 let (language_server, mut fake) = lsp::LanguageServer::fake_with_capabilities(
7582 lsp::ServerCapabilities {
7583 completion_provider: Some(lsp::CompletionOptions {
7584 trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
7585 ..Default::default()
7586 }),
7587 ..Default::default()
7588 },
7589 &cx,
7590 )
7591 .await;
7592
7593 let text = "
7594 one
7595 two
7596 three
7597 "
7598 .unindent();
7599
7600 let fs = Arc::new(FakeFs::new(cx.background().clone()));
7601 fs.insert_file("/file", text).await.unwrap();
7602
7603 let project = Project::test(fs, &mut cx);
7604
7605 let (worktree, relative_path) = project
7606 .update(&mut cx, |project, cx| {
7607 project.find_or_create_local_worktree("/file", false, cx)
7608 })
7609 .await
7610 .unwrap();
7611 let project_path = ProjectPath {
7612 worktree_id: worktree.read_with(&cx, |worktree, _| worktree.id()),
7613 path: relative_path.into(),
7614 };
7615 let buffer = project
7616 .update(&mut cx, |project, cx| project.open_buffer(project_path, cx))
7617 .await
7618 .unwrap();
7619 buffer.update(&mut cx, |buffer, cx| {
7620 buffer.set_language_server(Some(language_server), cx);
7621 });
7622
7623 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7624 buffer.next_notification(&cx).await;
7625
7626 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7627
7628 editor.update(&mut cx, |editor, cx| {
7629 editor.project = Some(project);
7630 editor.select_ranges([Point::new(0, 3)..Point::new(0, 3)], None, cx);
7631 editor.handle_input(&Input(".".to_string()), cx);
7632 });
7633
7634 handle_completion_request(
7635 &mut fake,
7636 "/file",
7637 Point::new(0, 4),
7638 &[
7639 (Point::new(0, 4)..Point::new(0, 4), "first_completion"),
7640 (Point::new(0, 4)..Point::new(0, 4), "second_completion"),
7641 ],
7642 )
7643 .await;
7644 editor.next_notification(&cx).await;
7645
7646 let apply_additional_edits = editor.update(&mut cx, |editor, cx| {
7647 editor.move_down(&MoveDown, cx);
7648 let apply_additional_edits = editor
7649 .confirm_completion(&ConfirmCompletion(None), cx)
7650 .unwrap();
7651 assert_eq!(
7652 editor.text(cx),
7653 "
7654 one.second_completion
7655 two
7656 three
7657 "
7658 .unindent()
7659 );
7660 apply_additional_edits
7661 });
7662
7663 handle_resolve_completion_request(
7664 &mut fake,
7665 Some((Point::new(2, 5)..Point::new(2, 5), "\nadditional edit")),
7666 )
7667 .await;
7668 apply_additional_edits.await.unwrap();
7669 assert_eq!(
7670 editor.read_with(&cx, |editor, cx| editor.text(cx)),
7671 "
7672 one.second_completion
7673 two
7674 three
7675 additional edit
7676 "
7677 .unindent()
7678 );
7679
7680 editor.update(&mut cx, |editor, cx| {
7681 editor.select_ranges(
7682 [
7683 Point::new(1, 3)..Point::new(1, 3),
7684 Point::new(2, 5)..Point::new(2, 5),
7685 ],
7686 None,
7687 cx,
7688 );
7689
7690 editor.handle_input(&Input(" ".to_string()), cx);
7691 assert!(editor.context_menu.is_none());
7692 editor.handle_input(&Input("s".to_string()), cx);
7693 assert!(editor.context_menu.is_none());
7694 });
7695
7696 handle_completion_request(
7697 &mut fake,
7698 "/file",
7699 Point::new(2, 7),
7700 &[
7701 (Point::new(2, 6)..Point::new(2, 7), "fourth_completion"),
7702 (Point::new(2, 6)..Point::new(2, 7), "fifth_completion"),
7703 (Point::new(2, 6)..Point::new(2, 7), "sixth_completion"),
7704 ],
7705 )
7706 .await;
7707 editor
7708 .condition(&cx, |editor, _| editor.context_menu.is_some())
7709 .await;
7710
7711 editor.update(&mut cx, |editor, cx| {
7712 editor.handle_input(&Input("i".to_string()), cx);
7713 });
7714
7715 handle_completion_request(
7716 &mut fake,
7717 "/file",
7718 Point::new(2, 8),
7719 &[
7720 (Point::new(2, 6)..Point::new(2, 8), "fourth_completion"),
7721 (Point::new(2, 6)..Point::new(2, 8), "fifth_completion"),
7722 (Point::new(2, 6)..Point::new(2, 8), "sixth_completion"),
7723 ],
7724 )
7725 .await;
7726 editor.next_notification(&cx).await;
7727
7728 let apply_additional_edits = editor.update(&mut cx, |editor, cx| {
7729 let apply_additional_edits = editor
7730 .confirm_completion(&ConfirmCompletion(None), cx)
7731 .unwrap();
7732 assert_eq!(
7733 editor.text(cx),
7734 "
7735 one.second_completion
7736 two sixth_completion
7737 three sixth_completion
7738 additional edit
7739 "
7740 .unindent()
7741 );
7742 apply_additional_edits
7743 });
7744 handle_resolve_completion_request(&mut fake, None).await;
7745 apply_additional_edits.await.unwrap();
7746
7747 async fn handle_completion_request(
7748 fake: &mut FakeLanguageServer,
7749 path: &str,
7750 position: Point,
7751 completions: &[(Range<Point>, &str)],
7752 ) {
7753 let (id, params) = fake.receive_request::<lsp::request::Completion>().await;
7754 assert_eq!(
7755 params.text_document_position.text_document.uri,
7756 lsp::Url::from_file_path(path).unwrap()
7757 );
7758 assert_eq!(
7759 params.text_document_position.position,
7760 lsp::Position::new(position.row, position.column)
7761 );
7762
7763 let completions = completions
7764 .iter()
7765 .map(|(range, new_text)| lsp::CompletionItem {
7766 label: new_text.to_string(),
7767 text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
7768 range: lsp::Range::new(
7769 lsp::Position::new(range.start.row, range.start.column),
7770 lsp::Position::new(range.start.row, range.start.column),
7771 ),
7772 new_text: new_text.to_string(),
7773 })),
7774 ..Default::default()
7775 })
7776 .collect();
7777 fake.respond(id, Some(lsp::CompletionResponse::Array(completions)))
7778 .await;
7779 }
7780
7781 async fn handle_resolve_completion_request(
7782 fake: &mut FakeLanguageServer,
7783 edit: Option<(Range<Point>, &str)>,
7784 ) {
7785 let (id, _) = fake
7786 .receive_request::<lsp::request::ResolveCompletionItem>()
7787 .await;
7788 fake.respond(
7789 id,
7790 lsp::CompletionItem {
7791 additional_text_edits: edit.map(|(range, new_text)| {
7792 vec![lsp::TextEdit::new(
7793 lsp::Range::new(
7794 lsp::Position::new(range.start.row, range.start.column),
7795 lsp::Position::new(range.end.row, range.end.column),
7796 ),
7797 new_text.to_string(),
7798 )]
7799 }),
7800 ..Default::default()
7801 },
7802 )
7803 .await;
7804 }
7805 }
7806
7807 #[gpui::test]
7808 async fn test_toggle_comment(mut cx: gpui::TestAppContext) {
7809 let settings = cx.read(EditorSettings::test);
7810 let language = Arc::new(Language::new(
7811 LanguageConfig {
7812 line_comment: Some("// ".to_string()),
7813 ..Default::default()
7814 },
7815 Some(tree_sitter_rust::language()),
7816 ));
7817
7818 let text = "
7819 fn a() {
7820 //b();
7821 // c();
7822 // d();
7823 }
7824 "
7825 .unindent();
7826
7827 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7828 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7829 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7830
7831 view.update(&mut cx, |editor, cx| {
7832 // If multiple selections intersect a line, the line is only
7833 // toggled once.
7834 editor.select_display_ranges(
7835 &[
7836 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
7837 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
7838 ],
7839 cx,
7840 );
7841 editor.toggle_comments(&ToggleComments, cx);
7842 assert_eq!(
7843 editor.text(cx),
7844 "
7845 fn a() {
7846 b();
7847 c();
7848 d();
7849 }
7850 "
7851 .unindent()
7852 );
7853
7854 // The comment prefix is inserted at the same column for every line
7855 // in a selection.
7856 editor.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx);
7857 editor.toggle_comments(&ToggleComments, cx);
7858 assert_eq!(
7859 editor.text(cx),
7860 "
7861 fn a() {
7862 // b();
7863 // c();
7864 // d();
7865 }
7866 "
7867 .unindent()
7868 );
7869
7870 // If a selection ends at the beginning of a line, that line is not toggled.
7871 editor.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx);
7872 editor.toggle_comments(&ToggleComments, cx);
7873 assert_eq!(
7874 editor.text(cx),
7875 "
7876 fn a() {
7877 // b();
7878 c();
7879 // d();
7880 }
7881 "
7882 .unindent()
7883 );
7884 });
7885 }
7886
7887 #[gpui::test]
7888 fn test_editing_disjoint_excerpts(cx: &mut gpui::MutableAppContext) {
7889 let settings = EditorSettings::test(cx);
7890 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
7891 let multibuffer = cx.add_model(|cx| {
7892 let mut multibuffer = MultiBuffer::new(0);
7893 multibuffer.push_excerpts(
7894 buffer.clone(),
7895 [
7896 Point::new(0, 0)..Point::new(0, 4),
7897 Point::new(1, 0)..Point::new(1, 4),
7898 ],
7899 cx,
7900 );
7901 multibuffer
7902 });
7903
7904 assert_eq!(multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb");
7905
7906 let (_, view) = cx.add_window(Default::default(), |cx| {
7907 build_editor(multibuffer, settings, cx)
7908 });
7909 view.update(cx, |view, cx| {
7910 assert_eq!(view.text(cx), "aaaa\nbbbb");
7911 view.select_ranges(
7912 [
7913 Point::new(0, 0)..Point::new(0, 0),
7914 Point::new(1, 0)..Point::new(1, 0),
7915 ],
7916 None,
7917 cx,
7918 );
7919
7920 view.handle_input(&Input("X".to_string()), cx);
7921 assert_eq!(view.text(cx), "Xaaaa\nXbbbb");
7922 assert_eq!(
7923 view.selected_ranges(cx),
7924 [
7925 Point::new(0, 1)..Point::new(0, 1),
7926 Point::new(1, 1)..Point::new(1, 1),
7927 ]
7928 )
7929 });
7930 }
7931
7932 #[gpui::test]
7933 fn test_editing_overlapping_excerpts(cx: &mut gpui::MutableAppContext) {
7934 let settings = EditorSettings::test(cx);
7935 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
7936 let multibuffer = cx.add_model(|cx| {
7937 let mut multibuffer = MultiBuffer::new(0);
7938 multibuffer.push_excerpts(
7939 buffer,
7940 [
7941 Point::new(0, 0)..Point::new(1, 4),
7942 Point::new(1, 0)..Point::new(2, 4),
7943 ],
7944 cx,
7945 );
7946 multibuffer
7947 });
7948
7949 assert_eq!(
7950 multibuffer.read(cx).read(cx).text(),
7951 "aaaa\nbbbb\nbbbb\ncccc"
7952 );
7953
7954 let (_, view) = cx.add_window(Default::default(), |cx| {
7955 build_editor(multibuffer, settings, cx)
7956 });
7957 view.update(cx, |view, cx| {
7958 view.select_ranges(
7959 [
7960 Point::new(1, 1)..Point::new(1, 1),
7961 Point::new(2, 3)..Point::new(2, 3),
7962 ],
7963 None,
7964 cx,
7965 );
7966
7967 view.handle_input(&Input("X".to_string()), cx);
7968 assert_eq!(view.text(cx), "aaaa\nbXbbXb\nbXbbXb\ncccc");
7969 assert_eq!(
7970 view.selected_ranges(cx),
7971 [
7972 Point::new(1, 2)..Point::new(1, 2),
7973 Point::new(2, 5)..Point::new(2, 5),
7974 ]
7975 );
7976
7977 view.newline(&Newline, cx);
7978 assert_eq!(view.text(cx), "aaaa\nbX\nbbX\nb\nbX\nbbX\nb\ncccc");
7979 assert_eq!(
7980 view.selected_ranges(cx),
7981 [
7982 Point::new(2, 0)..Point::new(2, 0),
7983 Point::new(6, 0)..Point::new(6, 0),
7984 ]
7985 );
7986 });
7987 }
7988
7989 #[gpui::test]
7990 fn test_refresh_selections(cx: &mut gpui::MutableAppContext) {
7991 let settings = EditorSettings::test(cx);
7992 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
7993 let mut excerpt1_id = None;
7994 let multibuffer = cx.add_model(|cx| {
7995 let mut multibuffer = MultiBuffer::new(0);
7996 excerpt1_id = multibuffer
7997 .push_excerpts(
7998 buffer.clone(),
7999 [
8000 Point::new(0, 0)..Point::new(1, 4),
8001 Point::new(1, 0)..Point::new(2, 4),
8002 ],
8003 cx,
8004 )
8005 .into_iter()
8006 .next();
8007 multibuffer
8008 });
8009 assert_eq!(
8010 multibuffer.read(cx).read(cx).text(),
8011 "aaaa\nbbbb\nbbbb\ncccc"
8012 );
8013 let (_, editor) = cx.add_window(Default::default(), |cx| {
8014 let mut editor = build_editor(multibuffer.clone(), settings, cx);
8015 editor.select_ranges(
8016 [
8017 Point::new(1, 3)..Point::new(1, 3),
8018 Point::new(2, 1)..Point::new(2, 1),
8019 ],
8020 None,
8021 cx,
8022 );
8023 editor
8024 });
8025
8026 // Refreshing selections is a no-op when excerpts haven't changed.
8027 editor.update(cx, |editor, cx| {
8028 editor.refresh_selections(cx);
8029 assert_eq!(
8030 editor.selected_ranges(cx),
8031 [
8032 Point::new(1, 3)..Point::new(1, 3),
8033 Point::new(2, 1)..Point::new(2, 1),
8034 ]
8035 );
8036 });
8037
8038 multibuffer.update(cx, |multibuffer, cx| {
8039 multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx);
8040 });
8041 editor.update(cx, |editor, cx| {
8042 // Removing an excerpt causes the first selection to become degenerate.
8043 assert_eq!(
8044 editor.selected_ranges(cx),
8045 [
8046 Point::new(0, 0)..Point::new(0, 0),
8047 Point::new(0, 1)..Point::new(0, 1)
8048 ]
8049 );
8050
8051 // Refreshing selections will relocate the first selection to the original buffer
8052 // location.
8053 editor.refresh_selections(cx);
8054 assert_eq!(
8055 editor.selected_ranges(cx),
8056 [
8057 Point::new(0, 1)..Point::new(0, 1),
8058 Point::new(0, 3)..Point::new(0, 3)
8059 ]
8060 );
8061 });
8062 }
8063
8064 #[gpui::test]
8065 async fn test_extra_newline_insertion(mut cx: gpui::TestAppContext) {
8066 let settings = cx.read(EditorSettings::test);
8067 let language = Arc::new(Language::new(
8068 LanguageConfig {
8069 brackets: vec![
8070 BracketPair {
8071 start: "{".to_string(),
8072 end: "}".to_string(),
8073 close: true,
8074 newline: true,
8075 },
8076 BracketPair {
8077 start: "/* ".to_string(),
8078 end: " */".to_string(),
8079 close: true,
8080 newline: true,
8081 },
8082 ],
8083 ..Default::default()
8084 },
8085 Some(tree_sitter_rust::language()),
8086 ));
8087
8088 let text = concat!(
8089 "{ }\n", // Suppress rustfmt
8090 " x\n", //
8091 " /* */\n", //
8092 "x\n", //
8093 "{{} }\n", //
8094 );
8095
8096 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8097 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8098 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8099 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
8100 .await;
8101
8102 view.update(&mut cx, |view, cx| {
8103 view.select_display_ranges(
8104 &[
8105 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
8106 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
8107 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
8108 ],
8109 cx,
8110 );
8111 view.newline(&Newline, cx);
8112
8113 assert_eq!(
8114 view.buffer().read(cx).read(cx).text(),
8115 concat!(
8116 "{ \n", // Suppress rustfmt
8117 "\n", //
8118 "}\n", //
8119 " x\n", //
8120 " /* \n", //
8121 " \n", //
8122 " */\n", //
8123 "x\n", //
8124 "{{} \n", //
8125 "}\n", //
8126 )
8127 );
8128 });
8129 }
8130
8131 #[gpui::test]
8132 fn test_highlighted_ranges(cx: &mut gpui::MutableAppContext) {
8133 let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
8134 let settings = EditorSettings::test(&cx);
8135 let (_, editor) = cx.add_window(Default::default(), |cx| {
8136 build_editor(buffer.clone(), settings, cx)
8137 });
8138
8139 editor.update(cx, |editor, cx| {
8140 struct Type1;
8141 struct Type2;
8142
8143 let buffer = buffer.read(cx).snapshot(cx);
8144
8145 let anchor_range = |range: Range<Point>| {
8146 buffer.anchor_after(range.start)..buffer.anchor_after(range.end)
8147 };
8148
8149 editor.highlight_ranges::<Type1>(
8150 vec![
8151 anchor_range(Point::new(2, 1)..Point::new(2, 3)),
8152 anchor_range(Point::new(4, 2)..Point::new(4, 4)),
8153 anchor_range(Point::new(6, 3)..Point::new(6, 5)),
8154 anchor_range(Point::new(8, 4)..Point::new(8, 6)),
8155 ],
8156 Color::red(),
8157 cx,
8158 );
8159 editor.highlight_ranges::<Type2>(
8160 vec![
8161 anchor_range(Point::new(3, 2)..Point::new(3, 5)),
8162 anchor_range(Point::new(5, 3)..Point::new(5, 6)),
8163 anchor_range(Point::new(7, 4)..Point::new(7, 7)),
8164 anchor_range(Point::new(9, 5)..Point::new(9, 8)),
8165 ],
8166 Color::green(),
8167 cx,
8168 );
8169
8170 let snapshot = editor.snapshot(cx);
8171 let mut highlighted_ranges = editor.highlighted_ranges_in_range(
8172 anchor_range(Point::new(3, 4)..Point::new(7, 4)),
8173 &snapshot,
8174 );
8175 // Enforce a consistent ordering based on color without relying on the ordering of the
8176 // highlight's `TypeId` which is non-deterministic.
8177 highlighted_ranges.sort_unstable_by_key(|(_, color)| *color);
8178 assert_eq!(
8179 highlighted_ranges,
8180 &[
8181 (
8182 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 5),
8183 Color::green(),
8184 ),
8185 (
8186 DisplayPoint::new(5, 3)..DisplayPoint::new(5, 6),
8187 Color::green(),
8188 ),
8189 (
8190 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 4),
8191 Color::red(),
8192 ),
8193 (
8194 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
8195 Color::red(),
8196 ),
8197 ]
8198 );
8199 assert_eq!(
8200 editor.highlighted_ranges_in_range(
8201 anchor_range(Point::new(5, 6)..Point::new(6, 4)),
8202 &snapshot,
8203 ),
8204 &[(
8205 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
8206 Color::red(),
8207 )]
8208 );
8209 });
8210 }
8211
8212 #[test]
8213 fn test_combine_syntax_and_fuzzy_match_highlights() {
8214 let string = "abcdefghijklmnop";
8215 let default = HighlightStyle::default();
8216 let syntax_ranges = [
8217 (
8218 0..3,
8219 HighlightStyle {
8220 color: Color::red(),
8221 ..default
8222 },
8223 ),
8224 (
8225 4..8,
8226 HighlightStyle {
8227 color: Color::green(),
8228 ..default
8229 },
8230 ),
8231 ];
8232 let match_indices = [4, 6, 7, 8];
8233 assert_eq!(
8234 combine_syntax_and_fuzzy_match_highlights(
8235 &string,
8236 default,
8237 syntax_ranges.into_iter(),
8238 &match_indices,
8239 ),
8240 &[
8241 (
8242 0..3,
8243 HighlightStyle {
8244 color: Color::red(),
8245 ..default
8246 },
8247 ),
8248 (
8249 4..5,
8250 HighlightStyle {
8251 color: Color::green(),
8252 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
8253 ..default
8254 },
8255 ),
8256 (
8257 5..6,
8258 HighlightStyle {
8259 color: Color::green(),
8260 ..default
8261 },
8262 ),
8263 (
8264 6..8,
8265 HighlightStyle {
8266 color: Color::green(),
8267 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
8268 ..default
8269 },
8270 ),
8271 (
8272 8..9,
8273 HighlightStyle {
8274 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
8275 ..default
8276 },
8277 ),
8278 ]
8279 );
8280 }
8281
8282 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
8283 let point = DisplayPoint::new(row as u32, column as u32);
8284 point..point
8285 }
8286
8287 fn build_editor(
8288 buffer: ModelHandle<MultiBuffer>,
8289 settings: EditorSettings,
8290 cx: &mut ViewContext<Editor>,
8291 ) -> Editor {
8292 Editor::for_buffer(buffer, Arc::new(move |_| settings.clone()), None, cx)
8293 }
8294}
8295
8296trait RangeExt<T> {
8297 fn sorted(&self) -> Range<T>;
8298 fn to_inclusive(&self) -> RangeInclusive<T>;
8299}
8300
8301impl<T: Ord + Clone> RangeExt<T> for Range<T> {
8302 fn sorted(&self) -> Self {
8303 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
8304 }
8305
8306 fn to_inclusive(&self) -> RangeInclusive<T> {
8307 self.start.clone()..=self.end.clone()
8308 }
8309}