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, AsyncAppContext, ClipboardItem, Element, ElementBox, Entity,
28 ModelHandle, MutableAppContext, RenderContext, Task, View, ViewContext, ViewHandle,
29 WeakViewHandle,
30};
31use items::{BufferItemHandle, MultiBufferItemHandle};
32use itertools::Itertools as _;
33pub use language::{char_kind, CharKind};
34use language::{
35 AnchorRangeExt as _, BracketPair, Buffer, CodeAction, CodeLabel, Completion, Diagnostic,
36 DiagnosticSeverity, Language, Point, Selection, SelectionGoal, TransactionId,
37};
38use multi_buffer::MultiBufferChunks;
39pub use multi_buffer::{
40 Anchor, AnchorRangeExt, ExcerptId, MultiBuffer, MultiBufferSnapshot, ToOffset, ToPoint,
41};
42use ordered_float::OrderedFloat;
43use postage::watch;
44use project::{Project, ProjectTransaction};
45use serde::{Deserialize, Serialize};
46use smallvec::SmallVec;
47use smol::Timer;
48use snippet::Snippet;
49use std::{
50 any::TypeId,
51 cmp::{self, Ordering, Reverse},
52 iter::{self, FromIterator},
53 mem,
54 ops::{Deref, DerefMut, Range, RangeInclusive, Sub},
55 sync::Arc,
56 time::{Duration, Instant},
57};
58pub use sum_tree::Bias;
59use text::rope::TextDimension;
60use theme::DiagnosticStyle;
61use util::{post_inc, ResultExt, TryFutureExt};
62use workspace::{settings, ItemNavHistory, PathOpener, Settings, Workspace};
63
64const CURSOR_BLINK_INTERVAL: Duration = Duration::from_millis(500);
65const MAX_LINE_LEN: usize = 1024;
66const MIN_NAVIGATION_HISTORY_ROW_DELTA: i64 = 10;
67
68action!(Cancel);
69action!(Backspace);
70action!(Delete);
71action!(Input, String);
72action!(Newline);
73action!(Tab);
74action!(Outdent);
75action!(DeleteLine);
76action!(DeleteToPreviousWordBoundary);
77action!(DeleteToNextWordBoundary);
78action!(DeleteToBeginningOfLine);
79action!(DeleteToEndOfLine);
80action!(CutToEndOfLine);
81action!(DuplicateLine);
82action!(MoveLineUp);
83action!(MoveLineDown);
84action!(Cut);
85action!(Copy);
86action!(Paste);
87action!(Undo);
88action!(Redo);
89action!(MoveUp);
90action!(MoveDown);
91action!(MoveLeft);
92action!(MoveRight);
93action!(MoveToPreviousWordBoundary);
94action!(MoveToNextWordBoundary);
95action!(MoveToBeginningOfLine);
96action!(MoveToEndOfLine);
97action!(MoveToBeginning);
98action!(MoveToEnd);
99action!(SelectUp);
100action!(SelectDown);
101action!(SelectLeft);
102action!(SelectRight);
103action!(SelectToPreviousWordBoundary);
104action!(SelectToNextWordBoundary);
105action!(SelectToBeginningOfLine, bool);
106action!(SelectToEndOfLine, bool);
107action!(SelectToBeginning);
108action!(SelectToEnd);
109action!(SelectAll);
110action!(SelectLine);
111action!(SplitSelectionIntoLines);
112action!(AddSelectionAbove);
113action!(AddSelectionBelow);
114action!(SelectNext, bool);
115action!(ToggleComments);
116action!(SelectLargerSyntaxNode);
117action!(SelectSmallerSyntaxNode);
118action!(MoveToEnclosingBracket);
119action!(ShowNextDiagnostic);
120action!(GoToDefinition);
121action!(FindAllReferences);
122action!(Rename);
123action!(ConfirmRename);
124action!(PageUp);
125action!(PageDown);
126action!(Fold);
127action!(Unfold);
128action!(FoldSelectedRanges);
129action!(Scroll, Vector2F);
130action!(Select, SelectPhase);
131action!(ShowCompletions);
132action!(ToggleCodeActions, bool);
133action!(ConfirmCompletion, Option<usize>);
134action!(ConfirmCodeAction, Option<usize>);
135action!(OpenExcerpts);
136
137pub fn init(cx: &mut MutableAppContext, path_openers: &mut Vec<Box<dyn PathOpener>>) {
138 path_openers.push(Box::new(items::BufferOpener));
139 cx.add_bindings(vec![
140 Binding::new("escape", Cancel, Some("Editor")),
141 Binding::new("backspace", Backspace, Some("Editor")),
142 Binding::new("ctrl-h", Backspace, Some("Editor")),
143 Binding::new("delete", Delete, Some("Editor")),
144 Binding::new("ctrl-d", Delete, Some("Editor")),
145 Binding::new("enter", Newline, Some("Editor && mode == full")),
146 Binding::new(
147 "alt-enter",
148 Input("\n".into()),
149 Some("Editor && mode == auto_height"),
150 ),
151 Binding::new(
152 "enter",
153 ConfirmCompletion(None),
154 Some("Editor && showing_completions"),
155 ),
156 Binding::new(
157 "enter",
158 ConfirmCodeAction(None),
159 Some("Editor && showing_code_actions"),
160 ),
161 Binding::new("enter", ConfirmRename, Some("Editor && renaming")),
162 Binding::new("tab", Tab, Some("Editor")),
163 Binding::new(
164 "tab",
165 ConfirmCompletion(None),
166 Some("Editor && showing_completions"),
167 ),
168 Binding::new("shift-tab", Outdent, Some("Editor")),
169 Binding::new("ctrl-shift-K", DeleteLine, Some("Editor")),
170 Binding::new(
171 "alt-backspace",
172 DeleteToPreviousWordBoundary,
173 Some("Editor"),
174 ),
175 Binding::new("alt-h", DeleteToPreviousWordBoundary, Some("Editor")),
176 Binding::new("alt-delete", DeleteToNextWordBoundary, Some("Editor")),
177 Binding::new("alt-d", DeleteToNextWordBoundary, Some("Editor")),
178 Binding::new("cmd-backspace", DeleteToBeginningOfLine, Some("Editor")),
179 Binding::new("cmd-delete", DeleteToEndOfLine, Some("Editor")),
180 Binding::new("ctrl-k", CutToEndOfLine, Some("Editor")),
181 Binding::new("cmd-shift-D", DuplicateLine, Some("Editor")),
182 Binding::new("ctrl-cmd-up", MoveLineUp, Some("Editor")),
183 Binding::new("ctrl-cmd-down", MoveLineDown, Some("Editor")),
184 Binding::new("cmd-x", Cut, Some("Editor")),
185 Binding::new("cmd-c", Copy, Some("Editor")),
186 Binding::new("cmd-v", Paste, Some("Editor")),
187 Binding::new("cmd-z", Undo, Some("Editor")),
188 Binding::new("cmd-shift-Z", Redo, Some("Editor")),
189 Binding::new("up", MoveUp, Some("Editor")),
190 Binding::new("down", MoveDown, Some("Editor")),
191 Binding::new("left", MoveLeft, Some("Editor")),
192 Binding::new("right", MoveRight, Some("Editor")),
193 Binding::new("ctrl-p", MoveUp, Some("Editor")),
194 Binding::new("ctrl-n", MoveDown, Some("Editor")),
195 Binding::new("ctrl-b", MoveLeft, Some("Editor")),
196 Binding::new("ctrl-f", MoveRight, Some("Editor")),
197 Binding::new("alt-left", MoveToPreviousWordBoundary, Some("Editor")),
198 Binding::new("alt-b", MoveToPreviousWordBoundary, Some("Editor")),
199 Binding::new("alt-right", MoveToNextWordBoundary, Some("Editor")),
200 Binding::new("alt-f", MoveToNextWordBoundary, Some("Editor")),
201 Binding::new("cmd-left", MoveToBeginningOfLine, Some("Editor")),
202 Binding::new("ctrl-a", MoveToBeginningOfLine, Some("Editor")),
203 Binding::new("cmd-right", MoveToEndOfLine, Some("Editor")),
204 Binding::new("ctrl-e", MoveToEndOfLine, Some("Editor")),
205 Binding::new("cmd-up", MoveToBeginning, Some("Editor")),
206 Binding::new("cmd-down", MoveToEnd, Some("Editor")),
207 Binding::new("shift-up", SelectUp, Some("Editor")),
208 Binding::new("ctrl-shift-P", SelectUp, Some("Editor")),
209 Binding::new("shift-down", SelectDown, Some("Editor")),
210 Binding::new("ctrl-shift-N", SelectDown, Some("Editor")),
211 Binding::new("shift-left", SelectLeft, Some("Editor")),
212 Binding::new("ctrl-shift-B", SelectLeft, Some("Editor")),
213 Binding::new("shift-right", SelectRight, Some("Editor")),
214 Binding::new("ctrl-shift-F", SelectRight, Some("Editor")),
215 Binding::new(
216 "alt-shift-left",
217 SelectToPreviousWordBoundary,
218 Some("Editor"),
219 ),
220 Binding::new("alt-shift-B", SelectToPreviousWordBoundary, Some("Editor")),
221 Binding::new("alt-shift-right", SelectToNextWordBoundary, Some("Editor")),
222 Binding::new("alt-shift-F", SelectToNextWordBoundary, Some("Editor")),
223 Binding::new(
224 "cmd-shift-left",
225 SelectToBeginningOfLine(true),
226 Some("Editor"),
227 ),
228 Binding::new(
229 "ctrl-shift-A",
230 SelectToBeginningOfLine(true),
231 Some("Editor"),
232 ),
233 Binding::new("cmd-shift-right", SelectToEndOfLine(true), Some("Editor")),
234 Binding::new("ctrl-shift-E", SelectToEndOfLine(true), Some("Editor")),
235 Binding::new("cmd-shift-up", SelectToBeginning, Some("Editor")),
236 Binding::new("cmd-shift-down", SelectToEnd, Some("Editor")),
237 Binding::new("cmd-a", SelectAll, Some("Editor")),
238 Binding::new("cmd-l", SelectLine, Some("Editor")),
239 Binding::new("cmd-shift-L", SplitSelectionIntoLines, Some("Editor")),
240 Binding::new("cmd-alt-up", AddSelectionAbove, Some("Editor")),
241 Binding::new("cmd-ctrl-p", AddSelectionAbove, Some("Editor")),
242 Binding::new("cmd-alt-down", AddSelectionBelow, Some("Editor")),
243 Binding::new("cmd-ctrl-n", AddSelectionBelow, Some("Editor")),
244 Binding::new("cmd-d", SelectNext(false), Some("Editor")),
245 Binding::new("cmd-k cmd-d", SelectNext(true), Some("Editor")),
246 Binding::new("cmd-/", ToggleComments, Some("Editor")),
247 Binding::new("alt-up", SelectLargerSyntaxNode, Some("Editor")),
248 Binding::new("ctrl-w", SelectLargerSyntaxNode, Some("Editor")),
249 Binding::new("alt-down", SelectSmallerSyntaxNode, Some("Editor")),
250 Binding::new("ctrl-shift-W", SelectSmallerSyntaxNode, Some("Editor")),
251 Binding::new("f8", ShowNextDiagnostic, Some("Editor")),
252 Binding::new("f2", Rename, Some("Editor")),
253 Binding::new("f12", GoToDefinition, Some("Editor")),
254 Binding::new("alt-shift-f12", FindAllReferences, Some("Editor")),
255 Binding::new("ctrl-m", MoveToEnclosingBracket, Some("Editor")),
256 Binding::new("pageup", PageUp, Some("Editor")),
257 Binding::new("pagedown", PageDown, Some("Editor")),
258 Binding::new("alt-cmd-[", Fold, Some("Editor")),
259 Binding::new("alt-cmd-]", Unfold, Some("Editor")),
260 Binding::new("alt-cmd-f", FoldSelectedRanges, Some("Editor")),
261 Binding::new("ctrl-space", ShowCompletions, Some("Editor")),
262 Binding::new("cmd-.", ToggleCodeActions(false), Some("Editor")),
263 Binding::new("alt-enter", OpenExcerpts, Some("Editor")),
264 ]);
265
266 cx.add_action(Editor::open_new);
267 cx.add_action(|this: &mut Editor, action: &Scroll, cx| this.set_scroll_position(action.0, cx));
268 cx.add_action(Editor::select);
269 cx.add_action(Editor::cancel);
270 cx.add_action(Editor::handle_input);
271 cx.add_action(Editor::newline);
272 cx.add_action(Editor::backspace);
273 cx.add_action(Editor::delete);
274 cx.add_action(Editor::tab);
275 cx.add_action(Editor::outdent);
276 cx.add_action(Editor::delete_line);
277 cx.add_action(Editor::delete_to_previous_word_boundary);
278 cx.add_action(Editor::delete_to_next_word_boundary);
279 cx.add_action(Editor::delete_to_beginning_of_line);
280 cx.add_action(Editor::delete_to_end_of_line);
281 cx.add_action(Editor::cut_to_end_of_line);
282 cx.add_action(Editor::duplicate_line);
283 cx.add_action(Editor::move_line_up);
284 cx.add_action(Editor::move_line_down);
285 cx.add_action(Editor::cut);
286 cx.add_action(Editor::copy);
287 cx.add_action(Editor::paste);
288 cx.add_action(Editor::undo);
289 cx.add_action(Editor::redo);
290 cx.add_action(Editor::move_up);
291 cx.add_action(Editor::move_down);
292 cx.add_action(Editor::move_left);
293 cx.add_action(Editor::move_right);
294 cx.add_action(Editor::move_to_previous_word_boundary);
295 cx.add_action(Editor::move_to_next_word_boundary);
296 cx.add_action(Editor::move_to_beginning_of_line);
297 cx.add_action(Editor::move_to_end_of_line);
298 cx.add_action(Editor::move_to_beginning);
299 cx.add_action(Editor::move_to_end);
300 cx.add_action(Editor::select_up);
301 cx.add_action(Editor::select_down);
302 cx.add_action(Editor::select_left);
303 cx.add_action(Editor::select_right);
304 cx.add_action(Editor::select_to_previous_word_boundary);
305 cx.add_action(Editor::select_to_next_word_boundary);
306 cx.add_action(Editor::select_to_beginning_of_line);
307 cx.add_action(Editor::select_to_end_of_line);
308 cx.add_action(Editor::select_to_beginning);
309 cx.add_action(Editor::select_to_end);
310 cx.add_action(Editor::select_all);
311 cx.add_action(Editor::select_line);
312 cx.add_action(Editor::split_selection_into_lines);
313 cx.add_action(Editor::add_selection_above);
314 cx.add_action(Editor::add_selection_below);
315 cx.add_action(Editor::select_next);
316 cx.add_action(Editor::toggle_comments);
317 cx.add_action(Editor::select_larger_syntax_node);
318 cx.add_action(Editor::select_smaller_syntax_node);
319 cx.add_action(Editor::move_to_enclosing_bracket);
320 cx.add_action(Editor::show_next_diagnostic);
321 cx.add_action(Editor::go_to_definition);
322 cx.add_action(Editor::page_up);
323 cx.add_action(Editor::page_down);
324 cx.add_action(Editor::fold);
325 cx.add_action(Editor::unfold);
326 cx.add_action(Editor::fold_selected_ranges);
327 cx.add_action(Editor::show_completions);
328 cx.add_action(Editor::toggle_code_actions);
329 cx.add_action(Editor::open_excerpts);
330 cx.add_async_action(Editor::confirm_completion);
331 cx.add_async_action(Editor::confirm_code_action);
332 cx.add_async_action(Editor::rename);
333 cx.add_async_action(Editor::confirm_rename);
334 cx.add_async_action(Editor::find_all_references);
335}
336
337trait SelectionExt {
338 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize>;
339 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point>;
340 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint>;
341 fn spanned_rows(&self, include_end_if_at_line_start: bool, map: &DisplaySnapshot)
342 -> Range<u32>;
343}
344
345trait InvalidationRegion {
346 fn ranges(&self) -> &[Range<Anchor>];
347}
348
349#[derive(Clone, Debug)]
350pub enum SelectPhase {
351 Begin {
352 position: DisplayPoint,
353 add: bool,
354 click_count: usize,
355 },
356 BeginColumnar {
357 position: DisplayPoint,
358 overshoot: u32,
359 },
360 Extend {
361 position: DisplayPoint,
362 click_count: usize,
363 },
364 Update {
365 position: DisplayPoint,
366 overshoot: u32,
367 scroll_position: Vector2F,
368 },
369 End,
370}
371
372#[derive(Clone, Debug)]
373pub enum SelectMode {
374 Character,
375 Word(Range<Anchor>),
376 Line(Range<Anchor>),
377 All,
378}
379
380#[derive(PartialEq, Eq)]
381pub enum Autoscroll {
382 Fit,
383 Center,
384 Newest,
385}
386
387#[derive(Copy, Clone, PartialEq, Eq)]
388pub enum EditorMode {
389 SingleLine,
390 AutoHeight { max_lines: usize },
391 Full,
392}
393
394#[derive(Clone)]
395pub enum SoftWrap {
396 None,
397 EditorWidth,
398 Column(u32),
399}
400
401#[derive(Clone)]
402pub struct EditorStyle {
403 pub text: TextStyle,
404 pub placeholder_text: Option<TextStyle>,
405 pub theme: theme::Editor,
406}
407
408type CompletionId = usize;
409
410pub type GetFieldEditorTheme = fn(&theme::Theme) -> theme::FieldEditor;
411
412pub struct Editor {
413 handle: WeakViewHandle<Self>,
414 buffer: ModelHandle<MultiBuffer>,
415 display_map: ModelHandle<DisplayMap>,
416 next_selection_id: usize,
417 selections: Arc<[Selection<Anchor>]>,
418 pending_selection: Option<PendingSelection>,
419 columnar_selection_tail: Option<Anchor>,
420 add_selections_state: Option<AddSelectionsState>,
421 select_next_state: Option<SelectNextState>,
422 selection_history:
423 HashMap<TransactionId, (Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)>,
424 autoclose_stack: InvalidationStack<BracketPairState>,
425 snippet_stack: InvalidationStack<SnippetState>,
426 select_larger_syntax_node_stack: Vec<Box<[Selection<usize>]>>,
427 active_diagnostics: Option<ActiveDiagnosticGroup>,
428 scroll_position: Vector2F,
429 scroll_top_anchor: Option<Anchor>,
430 autoscroll_request: Option<Autoscroll>,
431 settings: watch::Receiver<Settings>,
432 soft_wrap_mode_override: Option<settings::SoftWrap>,
433 get_field_editor_theme: Option<GetFieldEditorTheme>,
434 project: Option<ModelHandle<Project>>,
435 focused: bool,
436 show_local_cursors: bool,
437 blink_epoch: usize,
438 blinking_paused: bool,
439 mode: EditorMode,
440 vertical_scroll_margin: f32,
441 placeholder_text: Option<Arc<str>>,
442 highlighted_rows: Option<Range<u32>>,
443 highlighted_ranges: BTreeMap<TypeId, (Color, Vec<Range<Anchor>>)>,
444 nav_history: Option<ItemNavHistory>,
445 context_menu: Option<ContextMenu>,
446 completion_tasks: Vec<(CompletionId, Task<Option<()>>)>,
447 next_completion_id: CompletionId,
448 available_code_actions: Option<(ModelHandle<Buffer>, Arc<[CodeAction]>)>,
449 code_actions_task: Option<Task<()>>,
450 document_highlights_task: Option<Task<()>>,
451 pending_rename: Option<RenameState>,
452 searchable: bool,
453}
454
455pub struct EditorSnapshot {
456 pub mode: EditorMode,
457 pub display_snapshot: DisplaySnapshot,
458 pub placeholder_text: Option<Arc<str>>,
459 is_focused: bool,
460 scroll_position: Vector2F,
461 scroll_top_anchor: Option<Anchor>,
462}
463
464#[derive(Clone)]
465pub struct PendingSelection {
466 selection: Selection<Anchor>,
467 mode: SelectMode,
468}
469
470struct AddSelectionsState {
471 above: bool,
472 stack: Vec<usize>,
473}
474
475struct SelectNextState {
476 query: AhoCorasick,
477 wordwise: bool,
478 done: bool,
479}
480
481struct BracketPairState {
482 ranges: Vec<Range<Anchor>>,
483 pair: BracketPair,
484}
485
486struct SnippetState {
487 ranges: Vec<Vec<Range<Anchor>>>,
488 active_index: usize,
489}
490
491pub struct RenameState {
492 pub range: Range<Anchor>,
493 pub old_name: String,
494 pub editor: ViewHandle<Editor>,
495 block_id: BlockId,
496}
497
498struct InvalidationStack<T>(Vec<T>);
499
500enum ContextMenu {
501 Completions(CompletionsMenu),
502 CodeActions(CodeActionsMenu),
503}
504
505impl ContextMenu {
506 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) -> bool {
507 if self.visible() {
508 match self {
509 ContextMenu::Completions(menu) => menu.select_prev(cx),
510 ContextMenu::CodeActions(menu) => menu.select_prev(cx),
511 }
512 true
513 } else {
514 false
515 }
516 }
517
518 fn select_next(&mut self, cx: &mut ViewContext<Editor>) -> bool {
519 if self.visible() {
520 match self {
521 ContextMenu::Completions(menu) => menu.select_next(cx),
522 ContextMenu::CodeActions(menu) => menu.select_next(cx),
523 }
524 true
525 } else {
526 false
527 }
528 }
529
530 fn visible(&self) -> bool {
531 match self {
532 ContextMenu::Completions(menu) => menu.visible(),
533 ContextMenu::CodeActions(menu) => menu.visible(),
534 }
535 }
536
537 fn render(
538 &self,
539 cursor_position: DisplayPoint,
540 style: EditorStyle,
541 cx: &AppContext,
542 ) -> (DisplayPoint, ElementBox) {
543 match self {
544 ContextMenu::Completions(menu) => (cursor_position, menu.render(style, cx)),
545 ContextMenu::CodeActions(menu) => menu.render(cursor_position, style),
546 }
547 }
548}
549
550struct CompletionsMenu {
551 id: CompletionId,
552 initial_position: Anchor,
553 buffer: ModelHandle<Buffer>,
554 completions: Arc<[Completion]>,
555 match_candidates: Vec<StringMatchCandidate>,
556 matches: Arc<[StringMatch]>,
557 selected_item: usize,
558 list: UniformListState,
559}
560
561impl CompletionsMenu {
562 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) {
563 if self.selected_item > 0 {
564 self.selected_item -= 1;
565 self.list.scroll_to(ScrollTarget::Show(self.selected_item));
566 }
567 cx.notify();
568 }
569
570 fn select_next(&mut self, cx: &mut ViewContext<Editor>) {
571 if self.selected_item + 1 < self.matches.len() {
572 self.selected_item += 1;
573 self.list.scroll_to(ScrollTarget::Show(self.selected_item));
574 }
575 cx.notify();
576 }
577
578 fn visible(&self) -> bool {
579 !self.matches.is_empty()
580 }
581
582 fn render(&self, style: EditorStyle, _: &AppContext) -> ElementBox {
583 enum CompletionTag {}
584
585 let completions = self.completions.clone();
586 let matches = self.matches.clone();
587 let selected_item = self.selected_item;
588 let container_style = style.autocomplete.container;
589 UniformList::new(self.list.clone(), matches.len(), move |range, items, cx| {
590 let start_ix = range.start;
591 for (ix, mat) in matches[range].iter().enumerate() {
592 let completion = &completions[mat.candidate_id];
593 let item_ix = start_ix + ix;
594 items.push(
595 MouseEventHandler::new::<CompletionTag, _, _>(
596 mat.candidate_id,
597 cx,
598 |state, _| {
599 let item_style = if item_ix == selected_item {
600 style.autocomplete.selected_item
601 } else if state.hovered {
602 style.autocomplete.hovered_item
603 } else {
604 style.autocomplete.item
605 };
606
607 Text::new(completion.label.text.clone(), style.text.clone())
608 .with_soft_wrap(false)
609 .with_highlights(combine_syntax_and_fuzzy_match_highlights(
610 &completion.label.text,
611 style.text.color.into(),
612 styled_runs_for_code_label(
613 &completion.label,
614 style.text.color,
615 &style.syntax,
616 ),
617 &mat.positions,
618 ))
619 .contained()
620 .with_style(item_style)
621 .boxed()
622 },
623 )
624 .with_cursor_style(CursorStyle::PointingHand)
625 .on_mouse_down(move |cx| {
626 cx.dispatch_action(ConfirmCompletion(Some(item_ix)));
627 })
628 .boxed(),
629 );
630 }
631 })
632 .with_width_from_item(
633 self.matches
634 .iter()
635 .enumerate()
636 .max_by_key(|(_, mat)| {
637 self.completions[mat.candidate_id]
638 .label
639 .text
640 .chars()
641 .count()
642 })
643 .map(|(ix, _)| ix),
644 )
645 .contained()
646 .with_style(container_style)
647 .boxed()
648 }
649
650 pub async fn filter(&mut self, query: Option<&str>, executor: Arc<executor::Background>) {
651 let mut matches = if let Some(query) = query {
652 fuzzy::match_strings(
653 &self.match_candidates,
654 query,
655 false,
656 100,
657 &Default::default(),
658 executor,
659 )
660 .await
661 } else {
662 self.match_candidates
663 .iter()
664 .enumerate()
665 .map(|(candidate_id, candidate)| StringMatch {
666 candidate_id,
667 score: Default::default(),
668 positions: Default::default(),
669 string: candidate.string.clone(),
670 })
671 .collect()
672 };
673 matches.sort_unstable_by_key(|mat| {
674 (
675 Reverse(OrderedFloat(mat.score)),
676 self.completions[mat.candidate_id].sort_key(),
677 )
678 });
679
680 for mat in &mut matches {
681 let filter_start = self.completions[mat.candidate_id].label.filter_range.start;
682 for position in &mut mat.positions {
683 *position += filter_start;
684 }
685 }
686
687 self.matches = matches.into();
688 }
689}
690
691#[derive(Clone)]
692struct CodeActionsMenu {
693 actions: Arc<[CodeAction]>,
694 buffer: ModelHandle<Buffer>,
695 selected_item: usize,
696 list: UniformListState,
697 deployed_from_indicator: bool,
698}
699
700impl CodeActionsMenu {
701 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) {
702 if self.selected_item > 0 {
703 self.selected_item -= 1;
704 cx.notify()
705 }
706 }
707
708 fn select_next(&mut self, cx: &mut ViewContext<Editor>) {
709 if self.selected_item + 1 < self.actions.len() {
710 self.selected_item += 1;
711 cx.notify()
712 }
713 }
714
715 fn visible(&self) -> bool {
716 !self.actions.is_empty()
717 }
718
719 fn render(
720 &self,
721 mut cursor_position: DisplayPoint,
722 style: EditorStyle,
723 ) -> (DisplayPoint, ElementBox) {
724 enum ActionTag {}
725
726 let container_style = style.autocomplete.container;
727 let actions = self.actions.clone();
728 let selected_item = self.selected_item;
729 let element =
730 UniformList::new(self.list.clone(), actions.len(), move |range, items, cx| {
731 let start_ix = range.start;
732 for (ix, action) in actions[range].iter().enumerate() {
733 let item_ix = start_ix + ix;
734 items.push(
735 MouseEventHandler::new::<ActionTag, _, _>(item_ix, cx, |state, _| {
736 let item_style = if item_ix == selected_item {
737 style.autocomplete.selected_item
738 } else if state.hovered {
739 style.autocomplete.hovered_item
740 } else {
741 style.autocomplete.item
742 };
743
744 Text::new(action.lsp_action.title.clone(), style.text.clone())
745 .with_soft_wrap(false)
746 .contained()
747 .with_style(item_style)
748 .boxed()
749 })
750 .with_cursor_style(CursorStyle::PointingHand)
751 .on_mouse_down(move |cx| {
752 cx.dispatch_action(ConfirmCodeAction(Some(item_ix)));
753 })
754 .boxed(),
755 );
756 }
757 })
758 .with_width_from_item(
759 self.actions
760 .iter()
761 .enumerate()
762 .max_by_key(|(_, action)| action.lsp_action.title.chars().count())
763 .map(|(ix, _)| ix),
764 )
765 .contained()
766 .with_style(container_style)
767 .boxed();
768
769 if self.deployed_from_indicator {
770 *cursor_position.column_mut() = 0;
771 }
772
773 (cursor_position, element)
774 }
775}
776
777#[derive(Debug)]
778struct ActiveDiagnosticGroup {
779 primary_range: Range<Anchor>,
780 primary_message: String,
781 blocks: HashMap<BlockId, Diagnostic>,
782 is_valid: bool,
783}
784
785#[derive(Serialize, Deserialize)]
786struct ClipboardSelection {
787 len: usize,
788 is_entire_line: bool,
789}
790
791pub struct NavigationData {
792 anchor: Anchor,
793 offset: usize,
794}
795
796impl Editor {
797 pub fn single_line(
798 settings: watch::Receiver<Settings>,
799 field_editor_style: Option<GetFieldEditorTheme>,
800 cx: &mut ViewContext<Self>,
801 ) -> Self {
802 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
803 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
804 Self::new(
805 EditorMode::SingleLine,
806 buffer,
807 None,
808 settings,
809 field_editor_style,
810 cx,
811 )
812 }
813
814 pub fn auto_height(
815 max_lines: usize,
816 settings: watch::Receiver<Settings>,
817 field_editor_style: Option<GetFieldEditorTheme>,
818 cx: &mut ViewContext<Self>,
819 ) -> Self {
820 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
821 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
822 Self::new(
823 EditorMode::AutoHeight { max_lines },
824 buffer,
825 None,
826 settings,
827 field_editor_style,
828 cx,
829 )
830 }
831
832 pub fn for_buffer(
833 buffer: ModelHandle<MultiBuffer>,
834 project: Option<ModelHandle<Project>>,
835 settings: watch::Receiver<Settings>,
836 cx: &mut ViewContext<Self>,
837 ) -> Self {
838 Self::new(EditorMode::Full, buffer, project, settings, None, cx)
839 }
840
841 pub fn clone(&self, nav_history: ItemNavHistory, cx: &mut ViewContext<Self>) -> Self {
842 let mut clone = Self::new(
843 self.mode,
844 self.buffer.clone(),
845 self.project.clone(),
846 self.settings.clone(),
847 self.get_field_editor_theme,
848 cx,
849 );
850 clone.scroll_position = self.scroll_position;
851 clone.scroll_top_anchor = self.scroll_top_anchor.clone();
852 clone.nav_history = Some(nav_history);
853 clone.searchable = self.searchable;
854 clone
855 }
856
857 fn new(
858 mode: EditorMode,
859 buffer: ModelHandle<MultiBuffer>,
860 project: Option<ModelHandle<Project>>,
861 settings: watch::Receiver<Settings>,
862 get_field_editor_theme: Option<GetFieldEditorTheme>,
863 cx: &mut ViewContext<Self>,
864 ) -> Self {
865 let display_map = cx.add_model(|cx| {
866 let settings = settings.borrow();
867 let style = build_style(&*settings, get_field_editor_theme, cx);
868 DisplayMap::new(
869 buffer.clone(),
870 settings.tab_size,
871 style.text.font_id,
872 style.text.font_size,
873 None,
874 2,
875 1,
876 cx,
877 )
878 });
879 cx.observe(&buffer, Self::on_buffer_changed).detach();
880 cx.subscribe(&buffer, Self::on_buffer_event).detach();
881 cx.observe(&display_map, Self::on_display_map_changed)
882 .detach();
883
884 let mut this = Self {
885 handle: cx.weak_handle(),
886 buffer,
887 display_map,
888 selections: Arc::from([]),
889 pending_selection: Some(PendingSelection {
890 selection: Selection {
891 id: 0,
892 start: Anchor::min(),
893 end: Anchor::min(),
894 reversed: false,
895 goal: SelectionGoal::None,
896 },
897 mode: SelectMode::Character,
898 }),
899 columnar_selection_tail: None,
900 next_selection_id: 1,
901 add_selections_state: None,
902 select_next_state: None,
903 selection_history: Default::default(),
904 autoclose_stack: Default::default(),
905 snippet_stack: Default::default(),
906 select_larger_syntax_node_stack: Vec::new(),
907 active_diagnostics: None,
908 settings,
909 soft_wrap_mode_override: None,
910 get_field_editor_theme,
911 project,
912 scroll_position: Vector2F::zero(),
913 scroll_top_anchor: None,
914 autoscroll_request: None,
915 focused: false,
916 show_local_cursors: false,
917 blink_epoch: 0,
918 blinking_paused: false,
919 mode,
920 vertical_scroll_margin: 3.0,
921 placeholder_text: None,
922 highlighted_rows: None,
923 highlighted_ranges: Default::default(),
924 nav_history: None,
925 context_menu: None,
926 completion_tasks: Default::default(),
927 next_completion_id: 0,
928 available_code_actions: Default::default(),
929 code_actions_task: Default::default(),
930 document_highlights_task: Default::default(),
931 pending_rename: Default::default(),
932 searchable: true,
933 };
934 this.end_selection(cx);
935 this
936 }
937
938 pub fn open_new(
939 workspace: &mut Workspace,
940 _: &workspace::OpenNew,
941 cx: &mut ViewContext<Workspace>,
942 ) {
943 let buffer = cx
944 .add_model(|cx| Buffer::new(0, "", cx).with_language(language::PLAIN_TEXT.clone(), cx));
945 workspace.open_item(BufferItemHandle(buffer), cx);
946 }
947
948 pub fn replica_id(&self, cx: &AppContext) -> ReplicaId {
949 self.buffer.read(cx).replica_id()
950 }
951
952 pub fn buffer(&self) -> &ModelHandle<MultiBuffer> {
953 &self.buffer
954 }
955
956 pub fn title(&self, cx: &AppContext) -> String {
957 self.buffer().read(cx).title(cx)
958 }
959
960 pub fn snapshot(&mut self, cx: &mut MutableAppContext) -> EditorSnapshot {
961 EditorSnapshot {
962 mode: self.mode,
963 display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
964 scroll_position: self.scroll_position,
965 scroll_top_anchor: self.scroll_top_anchor.clone(),
966 placeholder_text: self.placeholder_text.clone(),
967 is_focused: self
968 .handle
969 .upgrade(cx)
970 .map_or(false, |handle| handle.is_focused(cx)),
971 }
972 }
973
974 pub fn language<'a>(&self, cx: &'a AppContext) -> Option<&'a Arc<Language>> {
975 self.buffer.read(cx).language(cx)
976 }
977
978 fn style(&self, cx: &AppContext) -> EditorStyle {
979 build_style(&*self.settings.borrow(), self.get_field_editor_theme, cx)
980 }
981
982 pub fn set_placeholder_text(
983 &mut self,
984 placeholder_text: impl Into<Arc<str>>,
985 cx: &mut ViewContext<Self>,
986 ) {
987 self.placeholder_text = Some(placeholder_text.into());
988 cx.notify();
989 }
990
991 pub fn set_vertical_scroll_margin(&mut self, margin_rows: usize, cx: &mut ViewContext<Self>) {
992 self.vertical_scroll_margin = margin_rows as f32;
993 cx.notify();
994 }
995
996 pub fn set_scroll_position(&mut self, scroll_position: Vector2F, cx: &mut ViewContext<Self>) {
997 let map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
998
999 if scroll_position.y() == 0. {
1000 self.scroll_top_anchor = None;
1001 self.scroll_position = scroll_position;
1002 } else {
1003 let scroll_top_buffer_offset =
1004 DisplayPoint::new(scroll_position.y() as u32, 0).to_offset(&map, Bias::Right);
1005 let anchor = map
1006 .buffer_snapshot
1007 .anchor_at(scroll_top_buffer_offset, Bias::Right);
1008 self.scroll_position = vec2f(
1009 scroll_position.x(),
1010 scroll_position.y() - anchor.to_display_point(&map).row() as f32,
1011 );
1012 self.scroll_top_anchor = Some(anchor);
1013 }
1014
1015 cx.notify();
1016 }
1017
1018 pub fn scroll_position(&self, cx: &mut ViewContext<Self>) -> Vector2F {
1019 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1020 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor)
1021 }
1022
1023 pub fn clamp_scroll_left(&mut self, max: f32) -> bool {
1024 if max < self.scroll_position.x() {
1025 self.scroll_position.set_x(max);
1026 true
1027 } else {
1028 false
1029 }
1030 }
1031
1032 pub fn autoscroll_vertically(
1033 &mut self,
1034 viewport_height: f32,
1035 line_height: f32,
1036 cx: &mut ViewContext<Self>,
1037 ) -> bool {
1038 let visible_lines = viewport_height / line_height;
1039 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1040 let mut scroll_position =
1041 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor);
1042 let max_scroll_top = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
1043 (display_map.max_point().row() as f32 - visible_lines + 1.).max(0.)
1044 } else {
1045 display_map.max_point().row().saturating_sub(1) as f32
1046 };
1047 if scroll_position.y() > max_scroll_top {
1048 scroll_position.set_y(max_scroll_top);
1049 self.set_scroll_position(scroll_position, cx);
1050 }
1051
1052 let autoscroll = if let Some(autoscroll) = self.autoscroll_request.take() {
1053 autoscroll
1054 } else {
1055 return false;
1056 };
1057
1058 let first_cursor_top;
1059 let last_cursor_bottom;
1060 if let Some(highlighted_rows) = &self.highlighted_rows {
1061 first_cursor_top = highlighted_rows.start as f32;
1062 last_cursor_bottom = first_cursor_top + 1.;
1063 } else if autoscroll == Autoscroll::Newest {
1064 let newest_selection = self.newest_selection::<Point>(&display_map.buffer_snapshot);
1065 first_cursor_top = newest_selection.head().to_display_point(&display_map).row() as f32;
1066 last_cursor_bottom = first_cursor_top + 1.;
1067 } else {
1068 let selections = self.local_selections::<Point>(cx);
1069 first_cursor_top = selections
1070 .first()
1071 .unwrap()
1072 .head()
1073 .to_display_point(&display_map)
1074 .row() as f32;
1075 last_cursor_bottom = selections
1076 .last()
1077 .unwrap()
1078 .head()
1079 .to_display_point(&display_map)
1080 .row() as f32
1081 + 1.0;
1082 }
1083
1084 let margin = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
1085 0.
1086 } else {
1087 ((visible_lines - (last_cursor_bottom - first_cursor_top)) / 2.0).floor()
1088 };
1089 if margin < 0.0 {
1090 return false;
1091 }
1092
1093 match autoscroll {
1094 Autoscroll::Fit | Autoscroll::Newest => {
1095 let margin = margin.min(self.vertical_scroll_margin);
1096 let target_top = (first_cursor_top - margin).max(0.0);
1097 let target_bottom = last_cursor_bottom + margin;
1098 let start_row = scroll_position.y();
1099 let end_row = start_row + visible_lines;
1100
1101 if target_top < start_row {
1102 scroll_position.set_y(target_top);
1103 self.set_scroll_position(scroll_position, cx);
1104 } else if target_bottom >= end_row {
1105 scroll_position.set_y(target_bottom - visible_lines);
1106 self.set_scroll_position(scroll_position, cx);
1107 }
1108 }
1109 Autoscroll::Center => {
1110 scroll_position.set_y((first_cursor_top - margin).max(0.0));
1111 self.set_scroll_position(scroll_position, cx);
1112 }
1113 }
1114
1115 true
1116 }
1117
1118 pub fn autoscroll_horizontally(
1119 &mut self,
1120 start_row: u32,
1121 viewport_width: f32,
1122 scroll_width: f32,
1123 max_glyph_width: f32,
1124 layouts: &[text_layout::Line],
1125 cx: &mut ViewContext<Self>,
1126 ) -> bool {
1127 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1128 let selections = self.local_selections::<Point>(cx);
1129
1130 let mut target_left;
1131 let mut target_right;
1132
1133 if self.highlighted_rows.is_some() {
1134 target_left = 0.0_f32;
1135 target_right = 0.0_f32;
1136 } else {
1137 target_left = std::f32::INFINITY;
1138 target_right = 0.0_f32;
1139 for selection in selections {
1140 let head = selection.head().to_display_point(&display_map);
1141 if head.row() >= start_row && head.row() < start_row + layouts.len() as u32 {
1142 let start_column = head.column().saturating_sub(3);
1143 let end_column = cmp::min(display_map.line_len(head.row()), head.column() + 3);
1144 target_left = target_left.min(
1145 layouts[(head.row() - start_row) as usize]
1146 .x_for_index(start_column as usize),
1147 );
1148 target_right = target_right.max(
1149 layouts[(head.row() - start_row) as usize].x_for_index(end_column as usize)
1150 + max_glyph_width,
1151 );
1152 }
1153 }
1154 }
1155
1156 target_right = target_right.min(scroll_width);
1157
1158 if target_right - target_left > viewport_width {
1159 return false;
1160 }
1161
1162 let scroll_left = self.scroll_position.x() * max_glyph_width;
1163 let scroll_right = scroll_left + viewport_width;
1164
1165 if target_left < scroll_left {
1166 self.scroll_position.set_x(target_left / max_glyph_width);
1167 true
1168 } else if target_right > scroll_right {
1169 self.scroll_position
1170 .set_x((target_right - viewport_width) / max_glyph_width);
1171 true
1172 } else {
1173 false
1174 }
1175 }
1176
1177 fn select(&mut self, Select(phase): &Select, cx: &mut ViewContext<Self>) {
1178 self.hide_context_menu(cx);
1179
1180 match phase {
1181 SelectPhase::Begin {
1182 position,
1183 add,
1184 click_count,
1185 } => self.begin_selection(*position, *add, *click_count, cx),
1186 SelectPhase::BeginColumnar {
1187 position,
1188 overshoot,
1189 } => self.begin_columnar_selection(*position, *overshoot, cx),
1190 SelectPhase::Extend {
1191 position,
1192 click_count,
1193 } => self.extend_selection(*position, *click_count, cx),
1194 SelectPhase::Update {
1195 position,
1196 overshoot,
1197 scroll_position,
1198 } => self.update_selection(*position, *overshoot, *scroll_position, cx),
1199 SelectPhase::End => self.end_selection(cx),
1200 }
1201 }
1202
1203 fn extend_selection(
1204 &mut self,
1205 position: DisplayPoint,
1206 click_count: usize,
1207 cx: &mut ViewContext<Self>,
1208 ) {
1209 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1210 let tail = self
1211 .newest_selection::<usize>(&display_map.buffer_snapshot)
1212 .tail();
1213 self.begin_selection(position, false, click_count, cx);
1214
1215 let position = position.to_offset(&display_map, Bias::Left);
1216 let tail_anchor = display_map.buffer_snapshot.anchor_before(tail);
1217 let mut pending = self.pending_selection.clone().unwrap();
1218
1219 if position >= tail {
1220 pending.selection.start = tail_anchor.clone();
1221 } else {
1222 pending.selection.end = tail_anchor.clone();
1223 pending.selection.reversed = true;
1224 }
1225
1226 match &mut pending.mode {
1227 SelectMode::Word(range) | SelectMode::Line(range) => {
1228 *range = tail_anchor.clone()..tail_anchor
1229 }
1230 _ => {}
1231 }
1232
1233 self.set_selections(self.selections.clone(), Some(pending), cx);
1234 }
1235
1236 fn begin_selection(
1237 &mut self,
1238 position: DisplayPoint,
1239 add: bool,
1240 click_count: usize,
1241 cx: &mut ViewContext<Self>,
1242 ) {
1243 if !self.focused {
1244 cx.focus_self();
1245 cx.emit(Event::Activate);
1246 }
1247
1248 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1249 let buffer = &display_map.buffer_snapshot;
1250 let newest_selection = self.newest_anchor_selection().clone();
1251
1252 let start;
1253 let end;
1254 let mode;
1255 match click_count {
1256 1 => {
1257 start = buffer.anchor_before(position.to_point(&display_map));
1258 end = start.clone();
1259 mode = SelectMode::Character;
1260 }
1261 2 => {
1262 let range = movement::surrounding_word(&display_map, position);
1263 start = buffer.anchor_before(range.start.to_point(&display_map));
1264 end = buffer.anchor_before(range.end.to_point(&display_map));
1265 mode = SelectMode::Word(start.clone()..end.clone());
1266 }
1267 3 => {
1268 let position = display_map
1269 .clip_point(position, Bias::Left)
1270 .to_point(&display_map);
1271 let line_start = display_map.prev_line_boundary(position).0;
1272 let next_line_start = buffer.clip_point(
1273 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1274 Bias::Left,
1275 );
1276 start = buffer.anchor_before(line_start);
1277 end = buffer.anchor_before(next_line_start);
1278 mode = SelectMode::Line(start.clone()..end.clone());
1279 }
1280 _ => {
1281 start = buffer.anchor_before(0);
1282 end = buffer.anchor_before(buffer.len());
1283 mode = SelectMode::All;
1284 }
1285 }
1286
1287 self.push_to_nav_history(newest_selection.head(), Some(end.to_point(&buffer)), cx);
1288
1289 let selection = Selection {
1290 id: post_inc(&mut self.next_selection_id),
1291 start,
1292 end,
1293 reversed: false,
1294 goal: SelectionGoal::None,
1295 };
1296
1297 let mut selections;
1298 if add {
1299 selections = self.selections.clone();
1300 // Remove the newest selection if it was added due to a previous mouse up
1301 // within this multi-click.
1302 if click_count > 1 {
1303 selections = self
1304 .selections
1305 .iter()
1306 .filter(|selection| selection.id != newest_selection.id)
1307 .cloned()
1308 .collect();
1309 }
1310 } else {
1311 selections = Arc::from([]);
1312 }
1313 self.set_selections(selections, Some(PendingSelection { selection, mode }), cx);
1314
1315 cx.notify();
1316 }
1317
1318 fn begin_columnar_selection(
1319 &mut self,
1320 position: DisplayPoint,
1321 overshoot: u32,
1322 cx: &mut ViewContext<Self>,
1323 ) {
1324 if !self.focused {
1325 cx.focus_self();
1326 cx.emit(Event::Activate);
1327 }
1328
1329 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1330 let tail = self
1331 .newest_selection::<Point>(&display_map.buffer_snapshot)
1332 .tail();
1333 self.columnar_selection_tail = Some(display_map.buffer_snapshot.anchor_before(tail));
1334
1335 self.select_columns(
1336 tail.to_display_point(&display_map),
1337 position,
1338 overshoot,
1339 &display_map,
1340 cx,
1341 );
1342 }
1343
1344 fn update_selection(
1345 &mut self,
1346 position: DisplayPoint,
1347 overshoot: u32,
1348 scroll_position: Vector2F,
1349 cx: &mut ViewContext<Self>,
1350 ) {
1351 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1352
1353 if let Some(tail) = self.columnar_selection_tail.as_ref() {
1354 let tail = tail.to_display_point(&display_map);
1355 self.select_columns(tail, position, overshoot, &display_map, cx);
1356 } else if let Some(mut pending) = self.pending_selection.clone() {
1357 let buffer = self.buffer.read(cx).snapshot(cx);
1358 let head;
1359 let tail;
1360 match &pending.mode {
1361 SelectMode::Character => {
1362 head = position.to_point(&display_map);
1363 tail = pending.selection.tail().to_point(&buffer);
1364 }
1365 SelectMode::Word(original_range) => {
1366 let original_display_range = original_range.start.to_display_point(&display_map)
1367 ..original_range.end.to_display_point(&display_map);
1368 let original_buffer_range = original_display_range.start.to_point(&display_map)
1369 ..original_display_range.end.to_point(&display_map);
1370 if movement::is_inside_word(&display_map, position)
1371 || original_display_range.contains(&position)
1372 {
1373 let word_range = movement::surrounding_word(&display_map, position);
1374 if word_range.start < original_display_range.start {
1375 head = word_range.start.to_point(&display_map);
1376 } else {
1377 head = word_range.end.to_point(&display_map);
1378 }
1379 } else {
1380 head = position.to_point(&display_map);
1381 }
1382
1383 if head <= original_buffer_range.start {
1384 tail = original_buffer_range.end;
1385 } else {
1386 tail = original_buffer_range.start;
1387 }
1388 }
1389 SelectMode::Line(original_range) => {
1390 let original_range = original_range.to_point(&display_map.buffer_snapshot);
1391
1392 let position = display_map
1393 .clip_point(position, Bias::Left)
1394 .to_point(&display_map);
1395 let line_start = display_map.prev_line_boundary(position).0;
1396 let next_line_start = buffer.clip_point(
1397 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1398 Bias::Left,
1399 );
1400
1401 if line_start < original_range.start {
1402 head = line_start
1403 } else {
1404 head = next_line_start
1405 }
1406
1407 if head <= original_range.start {
1408 tail = original_range.end;
1409 } else {
1410 tail = original_range.start;
1411 }
1412 }
1413 SelectMode::All => {
1414 return;
1415 }
1416 };
1417
1418 if head < tail {
1419 pending.selection.start = buffer.anchor_before(head);
1420 pending.selection.end = buffer.anchor_before(tail);
1421 pending.selection.reversed = true;
1422 } else {
1423 pending.selection.start = buffer.anchor_before(tail);
1424 pending.selection.end = buffer.anchor_before(head);
1425 pending.selection.reversed = false;
1426 }
1427 self.set_selections(self.selections.clone(), Some(pending), cx);
1428 } else {
1429 log::error!("update_selection dispatched with no pending selection");
1430 return;
1431 }
1432
1433 self.set_scroll_position(scroll_position, cx);
1434 cx.notify();
1435 }
1436
1437 fn end_selection(&mut self, cx: &mut ViewContext<Self>) {
1438 self.columnar_selection_tail.take();
1439 if self.pending_selection.is_some() {
1440 let selections = self.local_selections::<usize>(cx);
1441 self.update_selections(selections, None, cx);
1442 }
1443 }
1444
1445 fn select_columns(
1446 &mut self,
1447 tail: DisplayPoint,
1448 head: DisplayPoint,
1449 overshoot: u32,
1450 display_map: &DisplaySnapshot,
1451 cx: &mut ViewContext<Self>,
1452 ) {
1453 let start_row = cmp::min(tail.row(), head.row());
1454 let end_row = cmp::max(tail.row(), head.row());
1455 let start_column = cmp::min(tail.column(), head.column() + overshoot);
1456 let end_column = cmp::max(tail.column(), head.column() + overshoot);
1457 let reversed = start_column < tail.column();
1458
1459 let selections = (start_row..=end_row)
1460 .filter_map(|row| {
1461 if start_column <= display_map.line_len(row) && !display_map.is_block_line(row) {
1462 let start = display_map
1463 .clip_point(DisplayPoint::new(row, start_column), Bias::Left)
1464 .to_point(&display_map);
1465 let end = display_map
1466 .clip_point(DisplayPoint::new(row, end_column), Bias::Right)
1467 .to_point(&display_map);
1468 Some(Selection {
1469 id: post_inc(&mut self.next_selection_id),
1470 start,
1471 end,
1472 reversed,
1473 goal: SelectionGoal::None,
1474 })
1475 } else {
1476 None
1477 }
1478 })
1479 .collect::<Vec<_>>();
1480
1481 self.update_selections(selections, None, cx);
1482 cx.notify();
1483 }
1484
1485 pub fn is_selecting(&self) -> bool {
1486 self.pending_selection.is_some() || self.columnar_selection_tail.is_some()
1487 }
1488
1489 pub fn cancel(&mut self, _: &Cancel, cx: &mut ViewContext<Self>) {
1490 if self.take_rename(cx).is_some() {
1491 return;
1492 }
1493
1494 if self.hide_context_menu(cx).is_some() {
1495 return;
1496 }
1497
1498 if self.snippet_stack.pop().is_some() {
1499 return;
1500 }
1501
1502 if self.mode != EditorMode::Full {
1503 cx.propagate_action();
1504 return;
1505 }
1506
1507 if self.active_diagnostics.is_some() {
1508 self.dismiss_diagnostics(cx);
1509 } else if let Some(pending) = self.pending_selection.clone() {
1510 let mut selections = self.selections.clone();
1511 if selections.is_empty() {
1512 selections = Arc::from([pending.selection]);
1513 }
1514 self.set_selections(selections, None, cx);
1515 self.request_autoscroll(Autoscroll::Fit, cx);
1516 } else {
1517 let buffer = self.buffer.read(cx).snapshot(cx);
1518 let mut oldest_selection = self.oldest_selection::<usize>(&buffer);
1519 if self.selection_count() == 1 {
1520 if oldest_selection.is_empty() {
1521 cx.propagate_action();
1522 return;
1523 }
1524
1525 oldest_selection.start = oldest_selection.head().clone();
1526 oldest_selection.end = oldest_selection.head().clone();
1527 }
1528 self.update_selections(vec![oldest_selection], Some(Autoscroll::Fit), cx);
1529 }
1530 }
1531
1532 #[cfg(any(test, feature = "test-support"))]
1533 pub fn selected_ranges<D: TextDimension + Ord + Sub<D, Output = D>>(
1534 &self,
1535 cx: &mut MutableAppContext,
1536 ) -> Vec<Range<D>> {
1537 self.local_selections::<D>(cx)
1538 .iter()
1539 .map(|s| {
1540 if s.reversed {
1541 s.end.clone()..s.start.clone()
1542 } else {
1543 s.start.clone()..s.end.clone()
1544 }
1545 })
1546 .collect()
1547 }
1548
1549 #[cfg(any(test, feature = "test-support"))]
1550 pub fn selected_display_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
1551 let display_map = self
1552 .display_map
1553 .update(cx, |display_map, cx| display_map.snapshot(cx));
1554 self.selections
1555 .iter()
1556 .chain(
1557 self.pending_selection
1558 .as_ref()
1559 .map(|pending| &pending.selection),
1560 )
1561 .map(|s| {
1562 if s.reversed {
1563 s.end.to_display_point(&display_map)..s.start.to_display_point(&display_map)
1564 } else {
1565 s.start.to_display_point(&display_map)..s.end.to_display_point(&display_map)
1566 }
1567 })
1568 .collect()
1569 }
1570
1571 pub fn select_ranges<I, T>(
1572 &mut self,
1573 ranges: I,
1574 autoscroll: Option<Autoscroll>,
1575 cx: &mut ViewContext<Self>,
1576 ) where
1577 I: IntoIterator<Item = Range<T>>,
1578 T: ToOffset,
1579 {
1580 let buffer = self.buffer.read(cx).snapshot(cx);
1581 let selections = ranges
1582 .into_iter()
1583 .map(|range| {
1584 let mut start = range.start.to_offset(&buffer);
1585 let mut end = range.end.to_offset(&buffer);
1586 let reversed = if start > end {
1587 mem::swap(&mut start, &mut end);
1588 true
1589 } else {
1590 false
1591 };
1592 Selection {
1593 id: post_inc(&mut self.next_selection_id),
1594 start,
1595 end,
1596 reversed,
1597 goal: SelectionGoal::None,
1598 }
1599 })
1600 .collect::<Vec<_>>();
1601 self.update_selections(selections, autoscroll, cx);
1602 }
1603
1604 #[cfg(any(test, feature = "test-support"))]
1605 pub fn select_display_ranges<'a, T>(&mut self, ranges: T, cx: &mut ViewContext<Self>)
1606 where
1607 T: IntoIterator<Item = &'a Range<DisplayPoint>>,
1608 {
1609 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1610 let selections = ranges
1611 .into_iter()
1612 .map(|range| {
1613 let mut start = range.start;
1614 let mut end = range.end;
1615 let reversed = if start > end {
1616 mem::swap(&mut start, &mut end);
1617 true
1618 } else {
1619 false
1620 };
1621 Selection {
1622 id: post_inc(&mut self.next_selection_id),
1623 start: start.to_point(&display_map),
1624 end: end.to_point(&display_map),
1625 reversed,
1626 goal: SelectionGoal::None,
1627 }
1628 })
1629 .collect();
1630 self.update_selections(selections, None, cx);
1631 }
1632
1633 pub fn handle_input(&mut self, action: &Input, cx: &mut ViewContext<Self>) {
1634 let text = action.0.as_ref();
1635 if !self.skip_autoclose_end(text, cx) {
1636 self.start_transaction(cx);
1637 self.insert(text, cx);
1638 self.autoclose_pairs(cx);
1639 self.end_transaction(cx);
1640 self.trigger_completion_on_input(text, cx);
1641 }
1642 }
1643
1644 pub fn newline(&mut self, _: &Newline, cx: &mut ViewContext<Self>) {
1645 self.start_transaction(cx);
1646 let mut old_selections = SmallVec::<[_; 32]>::new();
1647 {
1648 let selections = self.local_selections::<usize>(cx);
1649 let buffer = self.buffer.read(cx).snapshot(cx);
1650 for selection in selections.iter() {
1651 let start_point = selection.start.to_point(&buffer);
1652 let indent = buffer
1653 .indent_column_for_line(start_point.row)
1654 .min(start_point.column);
1655 let start = selection.start;
1656 let end = selection.end;
1657
1658 let mut insert_extra_newline = false;
1659 if let Some(language) = buffer.language() {
1660 let leading_whitespace_len = buffer
1661 .reversed_chars_at(start)
1662 .take_while(|c| c.is_whitespace() && *c != '\n')
1663 .map(|c| c.len_utf8())
1664 .sum::<usize>();
1665
1666 let trailing_whitespace_len = buffer
1667 .chars_at(end)
1668 .take_while(|c| c.is_whitespace() && *c != '\n')
1669 .map(|c| c.len_utf8())
1670 .sum::<usize>();
1671
1672 insert_extra_newline = language.brackets().iter().any(|pair| {
1673 let pair_start = pair.start.trim_end();
1674 let pair_end = pair.end.trim_start();
1675
1676 pair.newline
1677 && buffer.contains_str_at(end + trailing_whitespace_len, pair_end)
1678 && buffer.contains_str_at(
1679 (start - leading_whitespace_len).saturating_sub(pair_start.len()),
1680 pair_start,
1681 )
1682 });
1683 }
1684
1685 old_selections.push((
1686 selection.id,
1687 buffer.anchor_after(end),
1688 start..end,
1689 indent,
1690 insert_extra_newline,
1691 ));
1692 }
1693 }
1694
1695 self.buffer.update(cx, |buffer, cx| {
1696 let mut delta = 0_isize;
1697 let mut pending_edit: Option<PendingEdit> = None;
1698 for (_, _, range, indent, insert_extra_newline) in &old_selections {
1699 if pending_edit.as_ref().map_or(false, |pending| {
1700 pending.indent != *indent
1701 || pending.insert_extra_newline != *insert_extra_newline
1702 }) {
1703 let pending = pending_edit.take().unwrap();
1704 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1705 new_text.push('\n');
1706 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1707 if pending.insert_extra_newline {
1708 new_text = new_text.repeat(2);
1709 }
1710 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1711 delta += pending.delta;
1712 }
1713
1714 let start = (range.start as isize + delta) as usize;
1715 let end = (range.end as isize + delta) as usize;
1716 let mut text_len = *indent as usize + 1;
1717 if *insert_extra_newline {
1718 text_len *= 2;
1719 }
1720
1721 let pending = pending_edit.get_or_insert_with(Default::default);
1722 pending.delta += text_len as isize - (end - start) as isize;
1723 pending.indent = *indent;
1724 pending.insert_extra_newline = *insert_extra_newline;
1725 pending.ranges.push(start..end);
1726 }
1727
1728 let pending = pending_edit.unwrap();
1729 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1730 new_text.push('\n');
1731 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1732 if pending.insert_extra_newline {
1733 new_text = new_text.repeat(2);
1734 }
1735 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1736
1737 let buffer = buffer.read(cx);
1738 self.selections = self
1739 .selections
1740 .iter()
1741 .cloned()
1742 .zip(old_selections)
1743 .map(
1744 |(mut new_selection, (_, end_anchor, _, _, insert_extra_newline))| {
1745 let mut cursor = end_anchor.to_point(&buffer);
1746 if insert_extra_newline {
1747 cursor.row -= 1;
1748 cursor.column = buffer.line_len(cursor.row);
1749 }
1750 let anchor = buffer.anchor_after(cursor);
1751 new_selection.start = anchor.clone();
1752 new_selection.end = anchor;
1753 new_selection
1754 },
1755 )
1756 .collect();
1757 });
1758
1759 self.request_autoscroll(Autoscroll::Fit, cx);
1760 self.end_transaction(cx);
1761
1762 #[derive(Default)]
1763 struct PendingEdit {
1764 indent: u32,
1765 insert_extra_newline: bool,
1766 delta: isize,
1767 ranges: SmallVec<[Range<usize>; 32]>,
1768 }
1769 }
1770
1771 pub fn insert(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1772 self.start_transaction(cx);
1773
1774 let old_selections = self.local_selections::<usize>(cx);
1775 let selection_anchors = self.buffer.update(cx, |buffer, cx| {
1776 let anchors = {
1777 let snapshot = buffer.read(cx);
1778 old_selections
1779 .iter()
1780 .map(|s| (s.id, s.goal, snapshot.anchor_after(s.end)))
1781 .collect::<Vec<_>>()
1782 };
1783 let edit_ranges = old_selections.iter().map(|s| s.start..s.end);
1784 buffer.edit_with_autoindent(edit_ranges, text, cx);
1785 anchors
1786 });
1787
1788 let selections = {
1789 let snapshot = self.buffer.read(cx).read(cx);
1790 selection_anchors
1791 .into_iter()
1792 .map(|(id, goal, position)| {
1793 let position = position.to_offset(&snapshot);
1794 Selection {
1795 id,
1796 start: position,
1797 end: position,
1798 goal,
1799 reversed: false,
1800 }
1801 })
1802 .collect()
1803 };
1804 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1805 self.end_transaction(cx);
1806 }
1807
1808 fn trigger_completion_on_input(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1809 let selection = self.newest_anchor_selection();
1810 if self
1811 .buffer
1812 .read(cx)
1813 .is_completion_trigger(selection.head(), text, cx)
1814 {
1815 self.show_completions(&ShowCompletions, cx);
1816 } else {
1817 self.hide_context_menu(cx);
1818 }
1819 }
1820
1821 fn autoclose_pairs(&mut self, cx: &mut ViewContext<Self>) {
1822 let selections = self.local_selections::<usize>(cx);
1823 let mut bracket_pair_state = None;
1824 let mut new_selections = None;
1825 self.buffer.update(cx, |buffer, cx| {
1826 let mut snapshot = buffer.snapshot(cx);
1827 let left_biased_selections = selections
1828 .iter()
1829 .map(|selection| Selection {
1830 id: selection.id,
1831 start: snapshot.anchor_before(selection.start),
1832 end: snapshot.anchor_before(selection.end),
1833 reversed: selection.reversed,
1834 goal: selection.goal,
1835 })
1836 .collect::<Vec<_>>();
1837
1838 let autoclose_pair = snapshot.language().and_then(|language| {
1839 let first_selection_start = selections.first().unwrap().start;
1840 let pair = language.brackets().iter().find(|pair| {
1841 snapshot.contains_str_at(
1842 first_selection_start.saturating_sub(pair.start.len()),
1843 &pair.start,
1844 )
1845 });
1846 pair.and_then(|pair| {
1847 let should_autoclose = selections[1..].iter().all(|selection| {
1848 snapshot.contains_str_at(
1849 selection.start.saturating_sub(pair.start.len()),
1850 &pair.start,
1851 )
1852 });
1853
1854 if should_autoclose {
1855 Some(pair.clone())
1856 } else {
1857 None
1858 }
1859 })
1860 });
1861
1862 if let Some(pair) = autoclose_pair {
1863 let selection_ranges = selections
1864 .iter()
1865 .map(|selection| {
1866 let start = selection.start.to_offset(&snapshot);
1867 start..start
1868 })
1869 .collect::<SmallVec<[_; 32]>>();
1870
1871 buffer.edit(selection_ranges, &pair.end, cx);
1872 snapshot = buffer.snapshot(cx);
1873
1874 new_selections = Some(
1875 self.resolve_selections::<usize, _>(left_biased_selections.iter(), &snapshot)
1876 .collect::<Vec<_>>(),
1877 );
1878
1879 if pair.end.len() == 1 {
1880 let mut delta = 0;
1881 bracket_pair_state = Some(BracketPairState {
1882 ranges: selections
1883 .iter()
1884 .map(move |selection| {
1885 let offset = selection.start + delta;
1886 delta += 1;
1887 snapshot.anchor_before(offset)..snapshot.anchor_after(offset)
1888 })
1889 .collect(),
1890 pair,
1891 });
1892 }
1893 }
1894 });
1895
1896 if let Some(new_selections) = new_selections {
1897 self.update_selections(new_selections, None, cx);
1898 }
1899 if let Some(bracket_pair_state) = bracket_pair_state {
1900 self.autoclose_stack.push(bracket_pair_state);
1901 }
1902 }
1903
1904 fn skip_autoclose_end(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
1905 let old_selections = self.local_selections::<usize>(cx);
1906 let autoclose_pair = if let Some(autoclose_pair) = self.autoclose_stack.last() {
1907 autoclose_pair
1908 } else {
1909 return false;
1910 };
1911 if text != autoclose_pair.pair.end {
1912 return false;
1913 }
1914
1915 debug_assert_eq!(old_selections.len(), autoclose_pair.ranges.len());
1916
1917 let buffer = self.buffer.read(cx).snapshot(cx);
1918 if old_selections
1919 .iter()
1920 .zip(autoclose_pair.ranges.iter().map(|r| r.to_offset(&buffer)))
1921 .all(|(selection, autoclose_range)| {
1922 let autoclose_range_end = autoclose_range.end.to_offset(&buffer);
1923 selection.is_empty() && selection.start == autoclose_range_end
1924 })
1925 {
1926 let new_selections = old_selections
1927 .into_iter()
1928 .map(|selection| {
1929 let cursor = selection.start + 1;
1930 Selection {
1931 id: selection.id,
1932 start: cursor,
1933 end: cursor,
1934 reversed: false,
1935 goal: SelectionGoal::None,
1936 }
1937 })
1938 .collect();
1939 self.autoclose_stack.pop();
1940 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1941 true
1942 } else {
1943 false
1944 }
1945 }
1946
1947 fn completion_query(buffer: &MultiBufferSnapshot, position: impl ToOffset) -> Option<String> {
1948 let offset = position.to_offset(buffer);
1949 let (word_range, kind) = buffer.surrounding_word(offset);
1950 if offset > word_range.start && kind == Some(CharKind::Word) {
1951 Some(
1952 buffer
1953 .text_for_range(word_range.start..offset)
1954 .collect::<String>(),
1955 )
1956 } else {
1957 None
1958 }
1959 }
1960
1961 fn show_completions(&mut self, _: &ShowCompletions, cx: &mut ViewContext<Self>) {
1962 if self.pending_rename.is_some() {
1963 return;
1964 }
1965
1966 let project = if let Some(project) = self.project.clone() {
1967 project
1968 } else {
1969 return;
1970 };
1971
1972 let position = self.newest_anchor_selection().head();
1973 let (buffer, buffer_position) = if let Some(output) = self
1974 .buffer
1975 .read(cx)
1976 .text_anchor_for_position(position.clone(), cx)
1977 {
1978 output
1979 } else {
1980 return;
1981 };
1982
1983 let query = Self::completion_query(&self.buffer.read(cx).read(cx), position.clone());
1984 let completions = project.update(cx, |project, cx| {
1985 project.completions(&buffer, buffer_position.clone(), cx)
1986 });
1987
1988 let id = post_inc(&mut self.next_completion_id);
1989 let task = cx.spawn_weak(|this, mut cx| {
1990 async move {
1991 let completions = completions.await?;
1992 if completions.is_empty() {
1993 return Ok(());
1994 }
1995
1996 let mut menu = CompletionsMenu {
1997 id,
1998 initial_position: position,
1999 match_candidates: completions
2000 .iter()
2001 .enumerate()
2002 .map(|(id, completion)| {
2003 StringMatchCandidate::new(
2004 id,
2005 completion.label.text[completion.label.filter_range.clone()].into(),
2006 )
2007 })
2008 .collect(),
2009 buffer,
2010 completions: completions.into(),
2011 matches: Vec::new().into(),
2012 selected_item: 0,
2013 list: Default::default(),
2014 };
2015
2016 menu.filter(query.as_deref(), cx.background()).await;
2017
2018 if let Some(this) = this.upgrade(&cx) {
2019 this.update(&mut cx, |this, cx| {
2020 match this.context_menu.as_ref() {
2021 None => {}
2022 Some(ContextMenu::Completions(prev_menu)) => {
2023 if prev_menu.id > menu.id {
2024 return;
2025 }
2026 }
2027 _ => return,
2028 }
2029
2030 this.completion_tasks.retain(|(id, _)| *id > menu.id);
2031 if this.focused {
2032 this.show_context_menu(ContextMenu::Completions(menu), cx);
2033 }
2034
2035 cx.notify();
2036 });
2037 }
2038 Ok::<_, anyhow::Error>(())
2039 }
2040 .log_err()
2041 });
2042 self.completion_tasks.push((id, task));
2043 }
2044
2045 pub fn confirm_completion(
2046 &mut self,
2047 ConfirmCompletion(completion_ix): &ConfirmCompletion,
2048 cx: &mut ViewContext<Self>,
2049 ) -> Option<Task<Result<()>>> {
2050 use language::ToOffset as _;
2051
2052 let completions_menu = if let ContextMenu::Completions(menu) = self.hide_context_menu(cx)? {
2053 menu
2054 } else {
2055 return None;
2056 };
2057
2058 let mat = completions_menu
2059 .matches
2060 .get(completion_ix.unwrap_or(completions_menu.selected_item))?;
2061 let buffer_handle = completions_menu.buffer;
2062 let completion = completions_menu.completions.get(mat.candidate_id)?;
2063
2064 let snippet;
2065 let text;
2066 if completion.is_snippet() {
2067 snippet = Some(Snippet::parse(&completion.new_text).log_err()?);
2068 text = snippet.as_ref().unwrap().text.clone();
2069 } else {
2070 snippet = None;
2071 text = completion.new_text.clone();
2072 };
2073 let buffer = buffer_handle.read(cx);
2074 let old_range = completion.old_range.to_offset(&buffer);
2075 let old_text = buffer.text_for_range(old_range.clone()).collect::<String>();
2076
2077 let selections = self.local_selections::<usize>(cx);
2078 let newest_selection = self.newest_anchor_selection();
2079 if newest_selection.start.buffer_id != Some(buffer_handle.id()) {
2080 return None;
2081 }
2082
2083 let lookbehind = newest_selection
2084 .start
2085 .text_anchor
2086 .to_offset(buffer)
2087 .saturating_sub(old_range.start);
2088 let lookahead = old_range
2089 .end
2090 .saturating_sub(newest_selection.end.text_anchor.to_offset(buffer));
2091 let mut common_prefix_len = old_text
2092 .bytes()
2093 .zip(text.bytes())
2094 .take_while(|(a, b)| a == b)
2095 .count();
2096
2097 let snapshot = self.buffer.read(cx).snapshot(cx);
2098 let mut ranges = Vec::new();
2099 for selection in &selections {
2100 if snapshot.contains_str_at(selection.start.saturating_sub(lookbehind), &old_text) {
2101 let start = selection.start.saturating_sub(lookbehind);
2102 let end = selection.end + lookahead;
2103 ranges.push(start + common_prefix_len..end);
2104 } else {
2105 common_prefix_len = 0;
2106 ranges.clear();
2107 ranges.extend(selections.iter().map(|s| {
2108 if s.id == newest_selection.id {
2109 old_range.clone()
2110 } else {
2111 s.start..s.end
2112 }
2113 }));
2114 break;
2115 }
2116 }
2117 let text = &text[common_prefix_len..];
2118
2119 self.start_transaction(cx);
2120 if let Some(mut snippet) = snippet {
2121 snippet.text = text.to_string();
2122 for tabstop in snippet.tabstops.iter_mut().flatten() {
2123 tabstop.start -= common_prefix_len as isize;
2124 tabstop.end -= common_prefix_len as isize;
2125 }
2126
2127 self.insert_snippet(&ranges, snippet, cx).log_err();
2128 } else {
2129 self.buffer.update(cx, |buffer, cx| {
2130 buffer.edit_with_autoindent(ranges, text, cx);
2131 });
2132 }
2133 self.end_transaction(cx);
2134
2135 let project = self.project.clone()?;
2136 let apply_edits = project.update(cx, |project, cx| {
2137 project.apply_additional_edits_for_completion(
2138 buffer_handle,
2139 completion.clone(),
2140 true,
2141 cx,
2142 )
2143 });
2144 Some(cx.foreground().spawn(async move {
2145 apply_edits.await?;
2146 Ok(())
2147 }))
2148 }
2149
2150 pub fn toggle_code_actions(
2151 &mut self,
2152 &ToggleCodeActions(deployed_from_indicator): &ToggleCodeActions,
2153 cx: &mut ViewContext<Self>,
2154 ) {
2155 if matches!(
2156 self.context_menu.as_ref(),
2157 Some(ContextMenu::CodeActions(_))
2158 ) {
2159 self.context_menu.take();
2160 cx.notify();
2161 return;
2162 }
2163
2164 let mut task = self.code_actions_task.take();
2165 cx.spawn_weak(|this, mut cx| async move {
2166 while let Some(prev_task) = task {
2167 prev_task.await;
2168 task = this
2169 .upgrade(&cx)
2170 .and_then(|this| this.update(&mut cx, |this, _| this.code_actions_task.take()));
2171 }
2172
2173 if let Some(this) = this.upgrade(&cx) {
2174 this.update(&mut cx, |this, cx| {
2175 if this.focused {
2176 if let Some((buffer, actions)) = this.available_code_actions.clone() {
2177 this.show_context_menu(
2178 ContextMenu::CodeActions(CodeActionsMenu {
2179 buffer,
2180 actions,
2181 selected_item: Default::default(),
2182 list: Default::default(),
2183 deployed_from_indicator,
2184 }),
2185 cx,
2186 );
2187 }
2188 }
2189 })
2190 }
2191 Ok::<_, anyhow::Error>(())
2192 })
2193 .detach_and_log_err(cx);
2194 }
2195
2196 pub fn confirm_code_action(
2197 workspace: &mut Workspace,
2198 ConfirmCodeAction(action_ix): &ConfirmCodeAction,
2199 cx: &mut ViewContext<Workspace>,
2200 ) -> Option<Task<Result<()>>> {
2201 let editor = workspace.active_item(cx)?.act_as::<Editor>(cx)?;
2202 let actions_menu = if let ContextMenu::CodeActions(menu) =
2203 editor.update(cx, |editor, cx| editor.hide_context_menu(cx))?
2204 {
2205 menu
2206 } else {
2207 return None;
2208 };
2209 let action_ix = action_ix.unwrap_or(actions_menu.selected_item);
2210 let action = actions_menu.actions.get(action_ix)?.clone();
2211 let title = action.lsp_action.title.clone();
2212 let buffer = actions_menu.buffer;
2213
2214 let apply_code_actions = workspace.project().clone().update(cx, |project, cx| {
2215 project.apply_code_action(buffer, action, true, cx)
2216 });
2217 Some(cx.spawn(|workspace, cx| async move {
2218 let project_transaction = apply_code_actions.await?;
2219 Self::open_project_transaction(editor, workspace, project_transaction, title, cx).await
2220 }))
2221 }
2222
2223 async fn open_project_transaction(
2224 this: ViewHandle<Editor>,
2225 workspace: ViewHandle<Workspace>,
2226 transaction: ProjectTransaction,
2227 title: String,
2228 mut cx: AsyncAppContext,
2229 ) -> Result<()> {
2230 let replica_id = this.read_with(&cx, |this, cx| this.replica_id(cx));
2231
2232 // If the code action's edits are all contained within this editor, then
2233 // avoid opening a new editor to display them.
2234 let mut entries = transaction.0.iter();
2235 if let Some((buffer, transaction)) = entries.next() {
2236 if entries.next().is_none() {
2237 let excerpt = this.read_with(&cx, |editor, cx| {
2238 editor
2239 .buffer()
2240 .read(cx)
2241 .excerpt_containing(editor.newest_anchor_selection().head(), cx)
2242 });
2243 if let Some((excerpted_buffer, excerpt_range)) = excerpt {
2244 if excerpted_buffer == *buffer {
2245 let snapshot = buffer.read_with(&cx, |buffer, _| buffer.snapshot());
2246 let excerpt_range = excerpt_range.to_offset(&snapshot);
2247 if snapshot
2248 .edited_ranges_for_transaction(transaction)
2249 .all(|range| {
2250 excerpt_range.start <= range.start && excerpt_range.end >= range.end
2251 })
2252 {
2253 return Ok(());
2254 }
2255 }
2256 }
2257 }
2258 }
2259
2260 let mut ranges_to_highlight = Vec::new();
2261 let excerpt_buffer = cx.add_model(|cx| {
2262 let mut multibuffer = MultiBuffer::new(replica_id).with_title(title);
2263 for (buffer, transaction) in &transaction.0 {
2264 let snapshot = buffer.read(cx).snapshot();
2265 ranges_to_highlight.extend(
2266 multibuffer.push_excerpts_with_context_lines(
2267 buffer.clone(),
2268 snapshot
2269 .edited_ranges_for_transaction::<usize>(transaction)
2270 .collect(),
2271 1,
2272 cx,
2273 ),
2274 );
2275 }
2276 multibuffer.push_transaction(&transaction.0);
2277 multibuffer
2278 });
2279
2280 workspace.update(&mut cx, |workspace, cx| {
2281 let editor = workspace.open_item(MultiBufferItemHandle(excerpt_buffer), cx);
2282 if let Some(editor) = editor.act_as::<Self>(cx) {
2283 editor.update(cx, |editor, cx| {
2284 let color = editor.style(cx).highlighted_line_background;
2285 editor.highlight_ranges::<Self>(ranges_to_highlight, color, cx);
2286 });
2287 }
2288 });
2289
2290 Ok(())
2291 }
2292
2293 fn refresh_code_actions(&mut self, cx: &mut ViewContext<Self>) -> Option<()> {
2294 let project = self.project.as_ref()?;
2295 let buffer = self.buffer.read(cx);
2296 let newest_selection = self.newest_anchor_selection().clone();
2297 let (start_buffer, start) = buffer.text_anchor_for_position(newest_selection.start, cx)?;
2298 let (end_buffer, end) = buffer.text_anchor_for_position(newest_selection.end, cx)?;
2299 if start_buffer != end_buffer {
2300 return None;
2301 }
2302
2303 let actions = project.update(cx, |project, cx| {
2304 project.code_actions(&start_buffer, start..end, cx)
2305 });
2306 self.code_actions_task = Some(cx.spawn_weak(|this, mut cx| async move {
2307 let actions = actions.await;
2308 if let Some(this) = this.upgrade(&cx) {
2309 this.update(&mut cx, |this, cx| {
2310 this.available_code_actions = actions.log_err().and_then(|actions| {
2311 if actions.is_empty() {
2312 None
2313 } else {
2314 Some((start_buffer, actions.into()))
2315 }
2316 });
2317 cx.notify();
2318 })
2319 }
2320 }));
2321 None
2322 }
2323
2324 fn refresh_document_highlights(&mut self, cx: &mut ViewContext<Self>) -> Option<()> {
2325 let project = self.project.as_ref()?;
2326 let buffer = self.buffer.read(cx);
2327 let newest_selection = self.newest_anchor_selection().clone();
2328 let cursor_position = newest_selection.head();
2329 let (cursor_buffer, cursor_buffer_position) =
2330 buffer.text_anchor_for_position(cursor_position.clone(), cx)?;
2331 let (tail_buffer, _) = buffer.text_anchor_for_position(newest_selection.tail(), cx)?;
2332 if cursor_buffer != tail_buffer {
2333 return None;
2334 }
2335
2336 let highlights = project.update(cx, |project, cx| {
2337 project.document_highlights(&cursor_buffer, cursor_buffer_position, cx)
2338 });
2339
2340 enum DocumentHighlightRead {}
2341 enum DocumentHighlightWrite {}
2342
2343 self.document_highlights_task = Some(cx.spawn_weak(|this, mut cx| async move {
2344 let highlights = highlights.log_err().await;
2345 if let Some((this, highlights)) = this.upgrade(&cx).zip(highlights) {
2346 this.update(&mut cx, |this, cx| {
2347 let buffer_id = cursor_position.buffer_id;
2348 let excerpt_id = cursor_position.excerpt_id.clone();
2349 let style = this.style(cx);
2350 let read_background = style.document_highlight_read_background;
2351 let write_background = style.document_highlight_write_background;
2352 let buffer = this.buffer.read(cx);
2353 if !buffer
2354 .text_anchor_for_position(cursor_position, cx)
2355 .map_or(false, |(buffer, _)| buffer == cursor_buffer)
2356 {
2357 return;
2358 }
2359
2360 let mut write_ranges = Vec::new();
2361 let mut read_ranges = Vec::new();
2362 for highlight in highlights {
2363 let range = Anchor {
2364 buffer_id,
2365 excerpt_id: excerpt_id.clone(),
2366 text_anchor: highlight.range.start,
2367 }..Anchor {
2368 buffer_id,
2369 excerpt_id: excerpt_id.clone(),
2370 text_anchor: highlight.range.end,
2371 };
2372 if highlight.kind == lsp::DocumentHighlightKind::WRITE {
2373 write_ranges.push(range);
2374 } else {
2375 read_ranges.push(range);
2376 }
2377 }
2378
2379 this.highlight_ranges::<DocumentHighlightRead>(
2380 read_ranges,
2381 read_background,
2382 cx,
2383 );
2384 this.highlight_ranges::<DocumentHighlightWrite>(
2385 write_ranges,
2386 write_background,
2387 cx,
2388 );
2389 cx.notify();
2390 });
2391 }
2392 }));
2393 None
2394 }
2395
2396 pub fn render_code_actions_indicator(
2397 &self,
2398 style: &EditorStyle,
2399 cx: &mut ViewContext<Self>,
2400 ) -> Option<ElementBox> {
2401 if self.available_code_actions.is_some() {
2402 enum Tag {}
2403 Some(
2404 MouseEventHandler::new::<Tag, _, _>(0, cx, |_, _| {
2405 Svg::new("icons/zap.svg")
2406 .with_color(style.code_actions_indicator)
2407 .boxed()
2408 })
2409 .with_cursor_style(CursorStyle::PointingHand)
2410 .with_padding(Padding::uniform(3.))
2411 .on_mouse_down(|cx| {
2412 cx.dispatch_action(ToggleCodeActions(true));
2413 })
2414 .boxed(),
2415 )
2416 } else {
2417 None
2418 }
2419 }
2420
2421 pub fn context_menu_visible(&self) -> bool {
2422 self.context_menu
2423 .as_ref()
2424 .map_or(false, |menu| menu.visible())
2425 }
2426
2427 pub fn render_context_menu(
2428 &self,
2429 cursor_position: DisplayPoint,
2430 style: EditorStyle,
2431 cx: &AppContext,
2432 ) -> Option<(DisplayPoint, ElementBox)> {
2433 self.context_menu
2434 .as_ref()
2435 .map(|menu| menu.render(cursor_position, style, cx))
2436 }
2437
2438 fn show_context_menu(&mut self, menu: ContextMenu, cx: &mut ViewContext<Self>) {
2439 if !matches!(menu, ContextMenu::Completions(_)) {
2440 self.completion_tasks.clear();
2441 }
2442 self.context_menu = Some(menu);
2443 cx.notify();
2444 }
2445
2446 fn hide_context_menu(&mut self, cx: &mut ViewContext<Self>) -> Option<ContextMenu> {
2447 cx.notify();
2448 self.completion_tasks.clear();
2449 self.context_menu.take()
2450 }
2451
2452 pub fn insert_snippet(
2453 &mut self,
2454 insertion_ranges: &[Range<usize>],
2455 snippet: Snippet,
2456 cx: &mut ViewContext<Self>,
2457 ) -> Result<()> {
2458 let tabstops = self.buffer.update(cx, |buffer, cx| {
2459 buffer.edit_with_autoindent(insertion_ranges.iter().cloned(), &snippet.text, cx);
2460
2461 let snapshot = &*buffer.read(cx);
2462 let snippet = &snippet;
2463 snippet
2464 .tabstops
2465 .iter()
2466 .map(|tabstop| {
2467 let mut tabstop_ranges = tabstop
2468 .iter()
2469 .flat_map(|tabstop_range| {
2470 let mut delta = 0 as isize;
2471 insertion_ranges.iter().map(move |insertion_range| {
2472 let insertion_start = insertion_range.start as isize + delta;
2473 delta +=
2474 snippet.text.len() as isize - insertion_range.len() as isize;
2475
2476 let start = snapshot.anchor_before(
2477 (insertion_start + tabstop_range.start) as usize,
2478 );
2479 let end = snapshot
2480 .anchor_after((insertion_start + tabstop_range.end) as usize);
2481 start..end
2482 })
2483 })
2484 .collect::<Vec<_>>();
2485 tabstop_ranges
2486 .sort_unstable_by(|a, b| a.start.cmp(&b.start, snapshot).unwrap());
2487 tabstop_ranges
2488 })
2489 .collect::<Vec<_>>()
2490 });
2491
2492 if let Some(tabstop) = tabstops.first() {
2493 self.select_ranges(tabstop.iter().cloned(), Some(Autoscroll::Fit), cx);
2494 self.snippet_stack.push(SnippetState {
2495 active_index: 0,
2496 ranges: tabstops,
2497 });
2498 }
2499
2500 Ok(())
2501 }
2502
2503 pub fn move_to_next_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) -> bool {
2504 self.move_to_snippet_tabstop(Bias::Right, cx)
2505 }
2506
2507 pub fn move_to_prev_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) {
2508 self.move_to_snippet_tabstop(Bias::Left, cx);
2509 }
2510
2511 pub fn move_to_snippet_tabstop(&mut self, bias: Bias, cx: &mut ViewContext<Self>) -> bool {
2512 let buffer = self.buffer.read(cx).snapshot(cx);
2513
2514 if let Some(snippet) = self.snippet_stack.last_mut() {
2515 match bias {
2516 Bias::Left => {
2517 if snippet.active_index > 0 {
2518 snippet.active_index -= 1;
2519 } else {
2520 return false;
2521 }
2522 }
2523 Bias::Right => {
2524 if snippet.active_index + 1 < snippet.ranges.len() {
2525 snippet.active_index += 1;
2526 } else {
2527 return false;
2528 }
2529 }
2530 }
2531 if let Some(current_ranges) = snippet.ranges.get(snippet.active_index) {
2532 let new_selections = current_ranges
2533 .iter()
2534 .map(|new_range| {
2535 let new_range = new_range.to_offset(&buffer);
2536 Selection {
2537 id: post_inc(&mut self.next_selection_id),
2538 start: new_range.start,
2539 end: new_range.end,
2540 reversed: false,
2541 goal: SelectionGoal::None,
2542 }
2543 })
2544 .collect();
2545
2546 // Remove the snippet state when moving to the last tabstop.
2547 if snippet.active_index + 1 == snippet.ranges.len() {
2548 self.snippet_stack.pop();
2549 }
2550
2551 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2552 return true;
2553 }
2554 self.snippet_stack.pop();
2555 }
2556
2557 false
2558 }
2559
2560 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
2561 self.start_transaction(cx);
2562 self.select_all(&SelectAll, cx);
2563 self.insert("", cx);
2564 self.end_transaction(cx);
2565 }
2566
2567 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
2568 self.start_transaction(cx);
2569 let mut selections = self.local_selections::<Point>(cx);
2570 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2571 for selection in &mut selections {
2572 if selection.is_empty() {
2573 let head = selection.head().to_display_point(&display_map);
2574 let cursor = movement::left(&display_map, head)
2575 .unwrap()
2576 .to_point(&display_map);
2577 selection.set_head(cursor);
2578 selection.goal = SelectionGoal::None;
2579 }
2580 }
2581 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2582 self.insert("", cx);
2583 self.end_transaction(cx);
2584 }
2585
2586 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
2587 self.start_transaction(cx);
2588 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2589 let mut selections = self.local_selections::<Point>(cx);
2590 for selection in &mut selections {
2591 if selection.is_empty() {
2592 let head = selection.head().to_display_point(&display_map);
2593 let cursor = movement::right(&display_map, head)
2594 .unwrap()
2595 .to_point(&display_map);
2596 selection.set_head(cursor);
2597 selection.goal = SelectionGoal::None;
2598 }
2599 }
2600 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2601 self.insert(&"", cx);
2602 self.end_transaction(cx);
2603 }
2604
2605 pub fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
2606 if self.move_to_next_snippet_tabstop(cx) {
2607 return;
2608 }
2609
2610 self.start_transaction(cx);
2611 let tab_size = self.settings.borrow().tab_size;
2612 let mut selections = self.local_selections::<Point>(cx);
2613 let mut last_indent = None;
2614 self.buffer.update(cx, |buffer, cx| {
2615 for selection in &mut selections {
2616 if selection.is_empty() {
2617 let char_column = buffer
2618 .read(cx)
2619 .text_for_range(Point::new(selection.start.row, 0)..selection.start)
2620 .flat_map(str::chars)
2621 .count();
2622 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
2623 buffer.edit(
2624 [selection.start..selection.start],
2625 " ".repeat(chars_to_next_tab_stop),
2626 cx,
2627 );
2628 selection.start.column += chars_to_next_tab_stop as u32;
2629 selection.end = selection.start;
2630 } else {
2631 let mut start_row = selection.start.row;
2632 let mut end_row = selection.end.row + 1;
2633
2634 // If a selection ends at the beginning of a line, don't indent
2635 // that last line.
2636 if selection.end.column == 0 {
2637 end_row -= 1;
2638 }
2639
2640 // Avoid re-indenting a row that has already been indented by a
2641 // previous selection, but still update this selection's column
2642 // to reflect that indentation.
2643 if let Some((last_indent_row, last_indent_len)) = last_indent {
2644 if last_indent_row == selection.start.row {
2645 selection.start.column += last_indent_len;
2646 start_row += 1;
2647 }
2648 if last_indent_row == selection.end.row {
2649 selection.end.column += last_indent_len;
2650 }
2651 }
2652
2653 for row in start_row..end_row {
2654 let indent_column = buffer.read(cx).indent_column_for_line(row) as usize;
2655 let columns_to_next_tab_stop = tab_size - (indent_column % tab_size);
2656 let row_start = Point::new(row, 0);
2657 buffer.edit(
2658 [row_start..row_start],
2659 " ".repeat(columns_to_next_tab_stop),
2660 cx,
2661 );
2662
2663 // Update this selection's endpoints to reflect the indentation.
2664 if row == selection.start.row {
2665 selection.start.column += columns_to_next_tab_stop as u32;
2666 }
2667 if row == selection.end.row {
2668 selection.end.column += columns_to_next_tab_stop as u32;
2669 }
2670
2671 last_indent = Some((row, columns_to_next_tab_stop as u32));
2672 }
2673 }
2674 }
2675 });
2676
2677 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2678 self.end_transaction(cx);
2679 }
2680
2681 pub fn outdent(&mut self, _: &Outdent, cx: &mut ViewContext<Self>) {
2682 if !self.snippet_stack.is_empty() {
2683 self.move_to_prev_snippet_tabstop(cx);
2684 return;
2685 }
2686
2687 self.start_transaction(cx);
2688 let tab_size = self.settings.borrow().tab_size;
2689 let selections = self.local_selections::<Point>(cx);
2690 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2691 let mut deletion_ranges = Vec::new();
2692 let mut last_outdent = None;
2693 {
2694 let buffer = self.buffer.read(cx).read(cx);
2695 for selection in &selections {
2696 let mut rows = selection.spanned_rows(false, &display_map);
2697
2698 // Avoid re-outdenting a row that has already been outdented by a
2699 // previous selection.
2700 if let Some(last_row) = last_outdent {
2701 if last_row == rows.start {
2702 rows.start += 1;
2703 }
2704 }
2705
2706 for row in rows {
2707 let column = buffer.indent_column_for_line(row) as usize;
2708 if column > 0 {
2709 let mut deletion_len = (column % tab_size) as u32;
2710 if deletion_len == 0 {
2711 deletion_len = tab_size as u32;
2712 }
2713 deletion_ranges.push(Point::new(row, 0)..Point::new(row, deletion_len));
2714 last_outdent = Some(row);
2715 }
2716 }
2717 }
2718 }
2719 self.buffer.update(cx, |buffer, cx| {
2720 buffer.edit(deletion_ranges, "", cx);
2721 });
2722
2723 self.update_selections(
2724 self.local_selections::<usize>(cx),
2725 Some(Autoscroll::Fit),
2726 cx,
2727 );
2728 self.end_transaction(cx);
2729 }
2730
2731 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
2732 self.start_transaction(cx);
2733
2734 let selections = self.local_selections::<Point>(cx);
2735 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2736 let buffer = self.buffer.read(cx).snapshot(cx);
2737
2738 let mut new_cursors = Vec::new();
2739 let mut edit_ranges = Vec::new();
2740 let mut selections = selections.iter().peekable();
2741 while let Some(selection) = selections.next() {
2742 let mut rows = selection.spanned_rows(false, &display_map);
2743 let goal_display_column = selection.head().to_display_point(&display_map).column();
2744
2745 // Accumulate contiguous regions of rows that we want to delete.
2746 while let Some(next_selection) = selections.peek() {
2747 let next_rows = next_selection.spanned_rows(false, &display_map);
2748 if next_rows.start <= rows.end {
2749 rows.end = next_rows.end;
2750 selections.next().unwrap();
2751 } else {
2752 break;
2753 }
2754 }
2755
2756 let mut edit_start = Point::new(rows.start, 0).to_offset(&buffer);
2757 let edit_end;
2758 let cursor_buffer_row;
2759 if buffer.max_point().row >= rows.end {
2760 // If there's a line after the range, delete the \n from the end of the row range
2761 // and position the cursor on the next line.
2762 edit_end = Point::new(rows.end, 0).to_offset(&buffer);
2763 cursor_buffer_row = rows.end;
2764 } else {
2765 // If there isn't a line after the range, delete the \n from the line before the
2766 // start of the row range and position the cursor there.
2767 edit_start = edit_start.saturating_sub(1);
2768 edit_end = buffer.len();
2769 cursor_buffer_row = rows.start.saturating_sub(1);
2770 }
2771
2772 let mut cursor = Point::new(cursor_buffer_row, 0).to_display_point(&display_map);
2773 *cursor.column_mut() =
2774 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
2775
2776 new_cursors.push((
2777 selection.id,
2778 buffer.anchor_after(cursor.to_point(&display_map)),
2779 ));
2780 edit_ranges.push(edit_start..edit_end);
2781 }
2782
2783 let buffer = self.buffer.update(cx, |buffer, cx| {
2784 buffer.edit(edit_ranges, "", cx);
2785 buffer.snapshot(cx)
2786 });
2787 let new_selections = new_cursors
2788 .into_iter()
2789 .map(|(id, cursor)| {
2790 let cursor = cursor.to_point(&buffer);
2791 Selection {
2792 id,
2793 start: cursor,
2794 end: cursor,
2795 reversed: false,
2796 goal: SelectionGoal::None,
2797 }
2798 })
2799 .collect();
2800 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2801 self.end_transaction(cx);
2802 }
2803
2804 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
2805 self.start_transaction(cx);
2806
2807 let selections = self.local_selections::<Point>(cx);
2808 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2809 let buffer = &display_map.buffer_snapshot;
2810
2811 let mut edits = Vec::new();
2812 let mut selections_iter = selections.iter().peekable();
2813 while let Some(selection) = selections_iter.next() {
2814 // Avoid duplicating the same lines twice.
2815 let mut rows = selection.spanned_rows(false, &display_map);
2816
2817 while let Some(next_selection) = selections_iter.peek() {
2818 let next_rows = next_selection.spanned_rows(false, &display_map);
2819 if next_rows.start <= rows.end - 1 {
2820 rows.end = next_rows.end;
2821 selections_iter.next().unwrap();
2822 } else {
2823 break;
2824 }
2825 }
2826
2827 // Copy the text from the selected row region and splice it at the start of the region.
2828 let start = Point::new(rows.start, 0);
2829 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
2830 let text = buffer
2831 .text_for_range(start..end)
2832 .chain(Some("\n"))
2833 .collect::<String>();
2834 edits.push((start, text, rows.len() as u32));
2835 }
2836
2837 self.buffer.update(cx, |buffer, cx| {
2838 for (point, text, _) in edits.into_iter().rev() {
2839 buffer.edit(Some(point..point), text, cx);
2840 }
2841 });
2842
2843 self.request_autoscroll(Autoscroll::Fit, cx);
2844 self.end_transaction(cx);
2845 }
2846
2847 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
2848 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2849 let buffer = self.buffer.read(cx).snapshot(cx);
2850
2851 let mut edits = Vec::new();
2852 let mut unfold_ranges = Vec::new();
2853 let mut refold_ranges = Vec::new();
2854
2855 let selections = self.local_selections::<Point>(cx);
2856 let mut selections = selections.iter().peekable();
2857 let mut contiguous_row_selections = Vec::new();
2858 let mut new_selections = Vec::new();
2859
2860 while let Some(selection) = selections.next() {
2861 // Find all the selections that span a contiguous row range
2862 contiguous_row_selections.push(selection.clone());
2863 let start_row = selection.start.row;
2864 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
2865 display_map.next_line_boundary(selection.end).0.row + 1
2866 } else {
2867 selection.end.row
2868 };
2869
2870 while let Some(next_selection) = selections.peek() {
2871 if next_selection.start.row <= end_row {
2872 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
2873 display_map.next_line_boundary(next_selection.end).0.row + 1
2874 } else {
2875 next_selection.end.row
2876 };
2877 contiguous_row_selections.push(selections.next().unwrap().clone());
2878 } else {
2879 break;
2880 }
2881 }
2882
2883 // Move the text spanned by the row range to be before the line preceding the row range
2884 if start_row > 0 {
2885 let range_to_move = Point::new(start_row - 1, buffer.line_len(start_row - 1))
2886 ..Point::new(end_row - 1, buffer.line_len(end_row - 1));
2887 let insertion_point = display_map
2888 .prev_line_boundary(Point::new(start_row - 1, 0))
2889 .0;
2890
2891 // Don't move lines across excerpts
2892 if buffer
2893 .excerpt_boundaries_in_range((
2894 Bound::Excluded(insertion_point),
2895 Bound::Included(range_to_move.end),
2896 ))
2897 .next()
2898 .is_none()
2899 {
2900 let text = buffer
2901 .text_for_range(range_to_move.clone())
2902 .flat_map(|s| s.chars())
2903 .skip(1)
2904 .chain(['\n'])
2905 .collect::<String>();
2906
2907 edits.push((
2908 buffer.anchor_after(range_to_move.start)
2909 ..buffer.anchor_before(range_to_move.end),
2910 String::new(),
2911 ));
2912 let insertion_anchor = buffer.anchor_after(insertion_point);
2913 edits.push((insertion_anchor.clone()..insertion_anchor, text));
2914
2915 let row_delta = range_to_move.start.row - insertion_point.row + 1;
2916
2917 // Move selections up
2918 new_selections.extend(contiguous_row_selections.drain(..).map(
2919 |mut selection| {
2920 selection.start.row -= row_delta;
2921 selection.end.row -= row_delta;
2922 selection
2923 },
2924 ));
2925
2926 // Move folds up
2927 unfold_ranges.push(range_to_move.clone());
2928 for fold in display_map.folds_in_range(
2929 buffer.anchor_before(range_to_move.start)
2930 ..buffer.anchor_after(range_to_move.end),
2931 ) {
2932 let mut start = fold.start.to_point(&buffer);
2933 let mut end = fold.end.to_point(&buffer);
2934 start.row -= row_delta;
2935 end.row -= row_delta;
2936 refold_ranges.push(start..end);
2937 }
2938 }
2939 }
2940
2941 // If we didn't move line(s), preserve the existing selections
2942 new_selections.extend(contiguous_row_selections.drain(..));
2943 }
2944
2945 self.start_transaction(cx);
2946 self.unfold_ranges(unfold_ranges, cx);
2947 self.buffer.update(cx, |buffer, cx| {
2948 for (range, text) in edits {
2949 buffer.edit([range], text, cx);
2950 }
2951 });
2952 self.fold_ranges(refold_ranges, cx);
2953 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2954 self.end_transaction(cx);
2955 }
2956
2957 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
2958 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2959 let buffer = self.buffer.read(cx).snapshot(cx);
2960
2961 let mut edits = Vec::new();
2962 let mut unfold_ranges = Vec::new();
2963 let mut refold_ranges = Vec::new();
2964
2965 let selections = self.local_selections::<Point>(cx);
2966 let mut selections = selections.iter().peekable();
2967 let mut contiguous_row_selections = Vec::new();
2968 let mut new_selections = Vec::new();
2969
2970 while let Some(selection) = selections.next() {
2971 // Find all the selections that span a contiguous row range
2972 contiguous_row_selections.push(selection.clone());
2973 let start_row = selection.start.row;
2974 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
2975 display_map.next_line_boundary(selection.end).0.row + 1
2976 } else {
2977 selection.end.row
2978 };
2979
2980 while let Some(next_selection) = selections.peek() {
2981 if next_selection.start.row <= end_row {
2982 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
2983 display_map.next_line_boundary(next_selection.end).0.row + 1
2984 } else {
2985 next_selection.end.row
2986 };
2987 contiguous_row_selections.push(selections.next().unwrap().clone());
2988 } else {
2989 break;
2990 }
2991 }
2992
2993 // Move the text spanned by the row range to be after the last line of the row range
2994 if end_row <= buffer.max_point().row {
2995 let range_to_move = Point::new(start_row, 0)..Point::new(end_row, 0);
2996 let insertion_point = display_map.next_line_boundary(Point::new(end_row, 0)).0;
2997
2998 // Don't move lines across excerpt boundaries
2999 if buffer
3000 .excerpt_boundaries_in_range((
3001 Bound::Excluded(range_to_move.start),
3002 Bound::Included(insertion_point),
3003 ))
3004 .next()
3005 .is_none()
3006 {
3007 let mut text = String::from("\n");
3008 text.extend(buffer.text_for_range(range_to_move.clone()));
3009 text.pop(); // Drop trailing newline
3010 edits.push((
3011 buffer.anchor_after(range_to_move.start)
3012 ..buffer.anchor_before(range_to_move.end),
3013 String::new(),
3014 ));
3015 let insertion_anchor = buffer.anchor_after(insertion_point);
3016 edits.push((insertion_anchor.clone()..insertion_anchor, text));
3017
3018 let row_delta = insertion_point.row - range_to_move.end.row + 1;
3019
3020 // Move selections down
3021 new_selections.extend(contiguous_row_selections.drain(..).map(
3022 |mut selection| {
3023 selection.start.row += row_delta;
3024 selection.end.row += row_delta;
3025 selection
3026 },
3027 ));
3028
3029 // Move folds down
3030 unfold_ranges.push(range_to_move.clone());
3031 for fold in display_map.folds_in_range(
3032 buffer.anchor_before(range_to_move.start)
3033 ..buffer.anchor_after(range_to_move.end),
3034 ) {
3035 let mut start = fold.start.to_point(&buffer);
3036 let mut end = fold.end.to_point(&buffer);
3037 start.row += row_delta;
3038 end.row += row_delta;
3039 refold_ranges.push(start..end);
3040 }
3041 }
3042 }
3043
3044 // If we didn't move line(s), preserve the existing selections
3045 new_selections.extend(contiguous_row_selections.drain(..));
3046 }
3047
3048 self.start_transaction(cx);
3049 self.unfold_ranges(unfold_ranges, cx);
3050 self.buffer.update(cx, |buffer, cx| {
3051 for (range, text) in edits {
3052 buffer.edit([range], text, cx);
3053 }
3054 });
3055 self.fold_ranges(refold_ranges, cx);
3056 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3057 self.end_transaction(cx);
3058 }
3059
3060 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
3061 self.start_transaction(cx);
3062 let mut text = String::new();
3063 let mut selections = self.local_selections::<Point>(cx);
3064 let mut clipboard_selections = Vec::with_capacity(selections.len());
3065 {
3066 let buffer = self.buffer.read(cx).read(cx);
3067 let max_point = buffer.max_point();
3068 for selection in &mut selections {
3069 let is_entire_line = selection.is_empty();
3070 if is_entire_line {
3071 selection.start = Point::new(selection.start.row, 0);
3072 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
3073 selection.goal = SelectionGoal::None;
3074 }
3075 let mut len = 0;
3076 for chunk in buffer.text_for_range(selection.start..selection.end) {
3077 text.push_str(chunk);
3078 len += chunk.len();
3079 }
3080 clipboard_selections.push(ClipboardSelection {
3081 len,
3082 is_entire_line,
3083 });
3084 }
3085 }
3086 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3087 self.insert("", cx);
3088 self.end_transaction(cx);
3089
3090 cx.as_mut()
3091 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
3092 }
3093
3094 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
3095 let selections = self.local_selections::<Point>(cx);
3096 let mut text = String::new();
3097 let mut clipboard_selections = Vec::with_capacity(selections.len());
3098 {
3099 let buffer = self.buffer.read(cx).read(cx);
3100 let max_point = buffer.max_point();
3101 for selection in selections.iter() {
3102 let mut start = selection.start;
3103 let mut end = selection.end;
3104 let is_entire_line = selection.is_empty();
3105 if is_entire_line {
3106 start = Point::new(start.row, 0);
3107 end = cmp::min(max_point, Point::new(start.row + 1, 0));
3108 }
3109 let mut len = 0;
3110 for chunk in buffer.text_for_range(start..end) {
3111 text.push_str(chunk);
3112 len += chunk.len();
3113 }
3114 clipboard_selections.push(ClipboardSelection {
3115 len,
3116 is_entire_line,
3117 });
3118 }
3119 }
3120
3121 cx.as_mut()
3122 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
3123 }
3124
3125 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
3126 if let Some(item) = cx.as_mut().read_from_clipboard() {
3127 let clipboard_text = item.text();
3128 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
3129 let mut selections = self.local_selections::<usize>(cx);
3130 let all_selections_were_entire_line =
3131 clipboard_selections.iter().all(|s| s.is_entire_line);
3132 if clipboard_selections.len() != selections.len() {
3133 clipboard_selections.clear();
3134 }
3135
3136 let mut delta = 0_isize;
3137 let mut start_offset = 0;
3138 for (i, selection) in selections.iter_mut().enumerate() {
3139 let to_insert;
3140 let entire_line;
3141 if let Some(clipboard_selection) = clipboard_selections.get(i) {
3142 let end_offset = start_offset + clipboard_selection.len;
3143 to_insert = &clipboard_text[start_offset..end_offset];
3144 entire_line = clipboard_selection.is_entire_line;
3145 start_offset = end_offset
3146 } else {
3147 to_insert = clipboard_text.as_str();
3148 entire_line = all_selections_were_entire_line;
3149 }
3150
3151 selection.start = (selection.start as isize + delta) as usize;
3152 selection.end = (selection.end as isize + delta) as usize;
3153
3154 self.buffer.update(cx, |buffer, cx| {
3155 // If the corresponding selection was empty when this slice of the
3156 // clipboard text was written, then the entire line containing the
3157 // selection was copied. If this selection is also currently empty,
3158 // then paste the line before the current line of the buffer.
3159 let range = if selection.is_empty() && entire_line {
3160 let column = selection.start.to_point(&buffer.read(cx)).column as usize;
3161 let line_start = selection.start - column;
3162 line_start..line_start
3163 } else {
3164 selection.start..selection.end
3165 };
3166
3167 delta += to_insert.len() as isize - range.len() as isize;
3168 buffer.edit([range], to_insert, cx);
3169 selection.start += to_insert.len();
3170 selection.end = selection.start;
3171 });
3172 }
3173 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3174 } else {
3175 self.insert(clipboard_text, cx);
3176 }
3177 }
3178 }
3179
3180 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
3181 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
3182 if let Some((selections, _)) = self.selection_history.get(&tx_id).cloned() {
3183 self.set_selections(selections, None, cx);
3184 }
3185 self.request_autoscroll(Autoscroll::Fit, cx);
3186 }
3187 }
3188
3189 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
3190 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
3191 if let Some((_, Some(selections))) = self.selection_history.get(&tx_id).cloned() {
3192 self.set_selections(selections, None, cx);
3193 }
3194 self.request_autoscroll(Autoscroll::Fit, cx);
3195 }
3196 }
3197
3198 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
3199 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3200 let mut selections = self.local_selections::<Point>(cx);
3201 for selection in &mut selections {
3202 let start = selection.start.to_display_point(&display_map);
3203 let end = selection.end.to_display_point(&display_map);
3204
3205 if start != end {
3206 selection.end = selection.start.clone();
3207 } else {
3208 let cursor = movement::left(&display_map, start)
3209 .unwrap()
3210 .to_point(&display_map);
3211 selection.start = cursor.clone();
3212 selection.end = cursor;
3213 }
3214 selection.reversed = false;
3215 selection.goal = SelectionGoal::None;
3216 }
3217 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3218 }
3219
3220 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
3221 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3222 let mut selections = self.local_selections::<Point>(cx);
3223 for selection in &mut selections {
3224 let head = selection.head().to_display_point(&display_map);
3225 let cursor = movement::left(&display_map, head)
3226 .unwrap()
3227 .to_point(&display_map);
3228 selection.set_head(cursor);
3229 selection.goal = SelectionGoal::None;
3230 }
3231 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3232 }
3233
3234 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
3235 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3236 let mut selections = self.local_selections::<Point>(cx);
3237 for selection in &mut selections {
3238 let start = selection.start.to_display_point(&display_map);
3239 let end = selection.end.to_display_point(&display_map);
3240
3241 if start != end {
3242 selection.start = selection.end.clone();
3243 } else {
3244 let cursor = movement::right(&display_map, end)
3245 .unwrap()
3246 .to_point(&display_map);
3247 selection.start = cursor;
3248 selection.end = cursor;
3249 }
3250 selection.reversed = false;
3251 selection.goal = SelectionGoal::None;
3252 }
3253 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3254 }
3255
3256 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
3257 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3258 let mut selections = self.local_selections::<Point>(cx);
3259 for selection in &mut selections {
3260 let head = selection.head().to_display_point(&display_map);
3261 let cursor = movement::right(&display_map, head)
3262 .unwrap()
3263 .to_point(&display_map);
3264 selection.set_head(cursor);
3265 selection.goal = SelectionGoal::None;
3266 }
3267 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3268 }
3269
3270 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
3271 if self.take_rename(cx).is_some() {
3272 return;
3273 }
3274
3275 if let Some(context_menu) = self.context_menu.as_mut() {
3276 if context_menu.select_prev(cx) {
3277 return;
3278 }
3279 }
3280
3281 if matches!(self.mode, EditorMode::SingleLine) {
3282 cx.propagate_action();
3283 return;
3284 }
3285
3286 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3287 let mut selections = self.local_selections::<Point>(cx);
3288 for selection in &mut selections {
3289 let start = selection.start.to_display_point(&display_map);
3290 let end = selection.end.to_display_point(&display_map);
3291 if start != end {
3292 selection.goal = SelectionGoal::None;
3293 }
3294
3295 let (start, goal) = movement::up(&display_map, start, selection.goal).unwrap();
3296 let cursor = start.to_point(&display_map);
3297 selection.start = cursor;
3298 selection.end = cursor;
3299 selection.goal = goal;
3300 selection.reversed = false;
3301 }
3302 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3303 }
3304
3305 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
3306 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3307 let mut selections = self.local_selections::<Point>(cx);
3308 for selection in &mut selections {
3309 let head = selection.head().to_display_point(&display_map);
3310 let (head, goal) = movement::up(&display_map, head, selection.goal).unwrap();
3311 let cursor = head.to_point(&display_map);
3312 selection.set_head(cursor);
3313 selection.goal = goal;
3314 }
3315 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3316 }
3317
3318 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
3319 self.take_rename(cx);
3320
3321 if let Some(context_menu) = self.context_menu.as_mut() {
3322 if context_menu.select_next(cx) {
3323 return;
3324 }
3325 }
3326
3327 if matches!(self.mode, EditorMode::SingleLine) {
3328 cx.propagate_action();
3329 return;
3330 }
3331
3332 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3333 let mut selections = self.local_selections::<Point>(cx);
3334 for selection in &mut selections {
3335 let start = selection.start.to_display_point(&display_map);
3336 let end = selection.end.to_display_point(&display_map);
3337 if start != end {
3338 selection.goal = SelectionGoal::None;
3339 }
3340
3341 let (start, goal) = movement::down(&display_map, end, selection.goal).unwrap();
3342 let cursor = start.to_point(&display_map);
3343 selection.start = cursor;
3344 selection.end = cursor;
3345 selection.goal = goal;
3346 selection.reversed = false;
3347 }
3348 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3349 }
3350
3351 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
3352 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3353 let mut selections = self.local_selections::<Point>(cx);
3354 for selection in &mut selections {
3355 let head = selection.head().to_display_point(&display_map);
3356 let (head, goal) = movement::down(&display_map, head, selection.goal).unwrap();
3357 let cursor = head.to_point(&display_map);
3358 selection.set_head(cursor);
3359 selection.goal = goal;
3360 }
3361 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3362 }
3363
3364 pub fn move_to_previous_word_boundary(
3365 &mut self,
3366 _: &MoveToPreviousWordBoundary,
3367 cx: &mut ViewContext<Self>,
3368 ) {
3369 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3370 let mut selections = self.local_selections::<Point>(cx);
3371 for selection in &mut selections {
3372 let head = selection.head().to_display_point(&display_map);
3373 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3374 selection.start = cursor.clone();
3375 selection.end = cursor;
3376 selection.reversed = false;
3377 selection.goal = SelectionGoal::None;
3378 }
3379 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3380 }
3381
3382 pub fn select_to_previous_word_boundary(
3383 &mut self,
3384 _: &SelectToPreviousWordBoundary,
3385 cx: &mut ViewContext<Self>,
3386 ) {
3387 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3388 let mut selections = self.local_selections::<Point>(cx);
3389 for selection in &mut selections {
3390 let head = selection.head().to_display_point(&display_map);
3391 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3392 selection.set_head(cursor);
3393 selection.goal = SelectionGoal::None;
3394 }
3395 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3396 }
3397
3398 pub fn delete_to_previous_word_boundary(
3399 &mut self,
3400 _: &DeleteToPreviousWordBoundary,
3401 cx: &mut ViewContext<Self>,
3402 ) {
3403 self.start_transaction(cx);
3404 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3405 let mut selections = self.local_selections::<Point>(cx);
3406 for selection in &mut selections {
3407 if selection.is_empty() {
3408 let head = selection.head().to_display_point(&display_map);
3409 let cursor =
3410 movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3411 selection.set_head(cursor);
3412 selection.goal = SelectionGoal::None;
3413 }
3414 }
3415 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3416 self.insert("", cx);
3417 self.end_transaction(cx);
3418 }
3419
3420 pub fn move_to_next_word_boundary(
3421 &mut self,
3422 _: &MoveToNextWordBoundary,
3423 cx: &mut ViewContext<Self>,
3424 ) {
3425 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3426 let mut selections = self.local_selections::<Point>(cx);
3427 for selection in &mut selections {
3428 let head = selection.head().to_display_point(&display_map);
3429 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
3430 selection.start = cursor;
3431 selection.end = cursor;
3432 selection.reversed = false;
3433 selection.goal = SelectionGoal::None;
3434 }
3435 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3436 }
3437
3438 pub fn select_to_next_word_boundary(
3439 &mut self,
3440 _: &SelectToNextWordBoundary,
3441 cx: &mut ViewContext<Self>,
3442 ) {
3443 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3444 let mut selections = self.local_selections::<Point>(cx);
3445 for selection in &mut selections {
3446 let head = selection.head().to_display_point(&display_map);
3447 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
3448 selection.set_head(cursor);
3449 selection.goal = SelectionGoal::None;
3450 }
3451 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3452 }
3453
3454 pub fn delete_to_next_word_boundary(
3455 &mut self,
3456 _: &DeleteToNextWordBoundary,
3457 cx: &mut ViewContext<Self>,
3458 ) {
3459 self.start_transaction(cx);
3460 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3461 let mut selections = self.local_selections::<Point>(cx);
3462 for selection in &mut selections {
3463 if selection.is_empty() {
3464 let head = selection.head().to_display_point(&display_map);
3465 let cursor =
3466 movement::next_word_boundary(&display_map, head).to_point(&display_map);
3467 selection.set_head(cursor);
3468 selection.goal = SelectionGoal::None;
3469 }
3470 }
3471 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3472 self.insert("", cx);
3473 self.end_transaction(cx);
3474 }
3475
3476 pub fn move_to_beginning_of_line(
3477 &mut self,
3478 _: &MoveToBeginningOfLine,
3479 cx: &mut ViewContext<Self>,
3480 ) {
3481 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3482 let mut selections = self.local_selections::<Point>(cx);
3483 for selection in &mut selections {
3484 let head = selection.head().to_display_point(&display_map);
3485 let new_head = movement::line_beginning(&display_map, head, true);
3486 let cursor = new_head.to_point(&display_map);
3487 selection.start = cursor;
3488 selection.end = cursor;
3489 selection.reversed = false;
3490 selection.goal = SelectionGoal::None;
3491 }
3492 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3493 }
3494
3495 pub fn select_to_beginning_of_line(
3496 &mut self,
3497 SelectToBeginningOfLine(stop_at_soft_boundaries): &SelectToBeginningOfLine,
3498 cx: &mut ViewContext<Self>,
3499 ) {
3500 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3501 let mut selections = self.local_selections::<Point>(cx);
3502 for selection in &mut selections {
3503 let head = selection.head().to_display_point(&display_map);
3504 let new_head = movement::line_beginning(&display_map, head, *stop_at_soft_boundaries);
3505 selection.set_head(new_head.to_point(&display_map));
3506 selection.goal = SelectionGoal::None;
3507 }
3508 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3509 }
3510
3511 pub fn delete_to_beginning_of_line(
3512 &mut self,
3513 _: &DeleteToBeginningOfLine,
3514 cx: &mut ViewContext<Self>,
3515 ) {
3516 self.start_transaction(cx);
3517 self.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
3518 self.backspace(&Backspace, cx);
3519 self.end_transaction(cx);
3520 }
3521
3522 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
3523 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3524 let mut selections = self.local_selections::<Point>(cx);
3525 {
3526 for selection in &mut selections {
3527 let head = selection.head().to_display_point(&display_map);
3528 let new_head = movement::line_end(&display_map, head, true);
3529 let anchor = new_head.to_point(&display_map);
3530 selection.start = anchor.clone();
3531 selection.end = anchor;
3532 selection.reversed = false;
3533 selection.goal = SelectionGoal::None;
3534 }
3535 }
3536 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3537 }
3538
3539 pub fn select_to_end_of_line(
3540 &mut self,
3541 SelectToEndOfLine(stop_at_soft_boundaries): &SelectToEndOfLine,
3542 cx: &mut ViewContext<Self>,
3543 ) {
3544 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3545 let mut selections = self.local_selections::<Point>(cx);
3546 for selection in &mut selections {
3547 let head = selection.head().to_display_point(&display_map);
3548 let new_head = movement::line_end(&display_map, head, *stop_at_soft_boundaries);
3549 selection.set_head(new_head.to_point(&display_map));
3550 selection.goal = SelectionGoal::None;
3551 }
3552 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3553 }
3554
3555 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
3556 self.start_transaction(cx);
3557 self.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3558 self.delete(&Delete, cx);
3559 self.end_transaction(cx);
3560 }
3561
3562 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
3563 self.start_transaction(cx);
3564 self.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3565 self.cut(&Cut, cx);
3566 self.end_transaction(cx);
3567 }
3568
3569 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
3570 if matches!(self.mode, EditorMode::SingleLine) {
3571 cx.propagate_action();
3572 return;
3573 }
3574
3575 let selection = Selection {
3576 id: post_inc(&mut self.next_selection_id),
3577 start: 0,
3578 end: 0,
3579 reversed: false,
3580 goal: SelectionGoal::None,
3581 };
3582 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3583 }
3584
3585 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
3586 let mut selection = self.local_selections::<Point>(cx).last().unwrap().clone();
3587 selection.set_head(Point::zero());
3588 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3589 }
3590
3591 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
3592 if matches!(self.mode, EditorMode::SingleLine) {
3593 cx.propagate_action();
3594 return;
3595 }
3596
3597 let cursor = self.buffer.read(cx).read(cx).len();
3598 let selection = Selection {
3599 id: post_inc(&mut self.next_selection_id),
3600 start: cursor,
3601 end: cursor,
3602 reversed: false,
3603 goal: SelectionGoal::None,
3604 };
3605 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3606 }
3607
3608 pub fn set_nav_history(&mut self, nav_history: Option<ItemNavHistory>) {
3609 self.nav_history = nav_history;
3610 }
3611
3612 pub fn nav_history(&self) -> Option<&ItemNavHistory> {
3613 self.nav_history.as_ref()
3614 }
3615
3616 fn push_to_nav_history(
3617 &self,
3618 position: Anchor,
3619 new_position: Option<Point>,
3620 cx: &mut ViewContext<Self>,
3621 ) {
3622 if let Some(nav_history) = &self.nav_history {
3623 let buffer = self.buffer.read(cx).read(cx);
3624 let offset = position.to_offset(&buffer);
3625 let point = position.to_point(&buffer);
3626 drop(buffer);
3627
3628 if let Some(new_position) = new_position {
3629 let row_delta = (new_position.row as i64 - point.row as i64).abs();
3630 if row_delta < MIN_NAVIGATION_HISTORY_ROW_DELTA {
3631 return;
3632 }
3633 }
3634
3635 nav_history.push(Some(NavigationData {
3636 anchor: position,
3637 offset,
3638 }));
3639 }
3640 }
3641
3642 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
3643 let mut selection = self.local_selections::<usize>(cx).first().unwrap().clone();
3644 selection.set_head(self.buffer.read(cx).read(cx).len());
3645 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3646 }
3647
3648 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
3649 let selection = Selection {
3650 id: post_inc(&mut self.next_selection_id),
3651 start: 0,
3652 end: self.buffer.read(cx).read(cx).len(),
3653 reversed: false,
3654 goal: SelectionGoal::None,
3655 };
3656 self.update_selections(vec![selection], None, cx);
3657 }
3658
3659 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
3660 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3661 let mut selections = self.local_selections::<Point>(cx);
3662 let max_point = display_map.buffer_snapshot.max_point();
3663 for selection in &mut selections {
3664 let rows = selection.spanned_rows(true, &display_map);
3665 selection.start = Point::new(rows.start, 0);
3666 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
3667 selection.reversed = false;
3668 }
3669 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3670 }
3671
3672 pub fn split_selection_into_lines(
3673 &mut self,
3674 _: &SplitSelectionIntoLines,
3675 cx: &mut ViewContext<Self>,
3676 ) {
3677 let mut to_unfold = Vec::new();
3678 let mut new_selections = Vec::new();
3679 {
3680 let selections = self.local_selections::<Point>(cx);
3681 let buffer = self.buffer.read(cx).read(cx);
3682 for selection in selections {
3683 for row in selection.start.row..selection.end.row {
3684 let cursor = Point::new(row, buffer.line_len(row));
3685 new_selections.push(Selection {
3686 id: post_inc(&mut self.next_selection_id),
3687 start: cursor,
3688 end: cursor,
3689 reversed: false,
3690 goal: SelectionGoal::None,
3691 });
3692 }
3693 new_selections.push(Selection {
3694 id: selection.id,
3695 start: selection.end,
3696 end: selection.end,
3697 reversed: false,
3698 goal: SelectionGoal::None,
3699 });
3700 to_unfold.push(selection.start..selection.end);
3701 }
3702 }
3703 self.unfold_ranges(to_unfold, cx);
3704 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3705 }
3706
3707 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
3708 self.add_selection(true, cx);
3709 }
3710
3711 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
3712 self.add_selection(false, cx);
3713 }
3714
3715 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
3716 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3717 let mut selections = self.local_selections::<Point>(cx);
3718 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
3719 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
3720 let range = oldest_selection.display_range(&display_map).sorted();
3721 let columns = cmp::min(range.start.column(), range.end.column())
3722 ..cmp::max(range.start.column(), range.end.column());
3723
3724 selections.clear();
3725 let mut stack = Vec::new();
3726 for row in range.start.row()..=range.end.row() {
3727 if let Some(selection) = self.build_columnar_selection(
3728 &display_map,
3729 row,
3730 &columns,
3731 oldest_selection.reversed,
3732 ) {
3733 stack.push(selection.id);
3734 selections.push(selection);
3735 }
3736 }
3737
3738 if above {
3739 stack.reverse();
3740 }
3741
3742 AddSelectionsState { above, stack }
3743 });
3744
3745 let last_added_selection = *state.stack.last().unwrap();
3746 let mut new_selections = Vec::new();
3747 if above == state.above {
3748 let end_row = if above {
3749 0
3750 } else {
3751 display_map.max_point().row()
3752 };
3753
3754 'outer: for selection in selections {
3755 if selection.id == last_added_selection {
3756 let range = selection.display_range(&display_map).sorted();
3757 debug_assert_eq!(range.start.row(), range.end.row());
3758 let mut row = range.start.row();
3759 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
3760 {
3761 start..end
3762 } else {
3763 cmp::min(range.start.column(), range.end.column())
3764 ..cmp::max(range.start.column(), range.end.column())
3765 };
3766
3767 while row != end_row {
3768 if above {
3769 row -= 1;
3770 } else {
3771 row += 1;
3772 }
3773
3774 if let Some(new_selection) = self.build_columnar_selection(
3775 &display_map,
3776 row,
3777 &columns,
3778 selection.reversed,
3779 ) {
3780 state.stack.push(new_selection.id);
3781 if above {
3782 new_selections.push(new_selection);
3783 new_selections.push(selection);
3784 } else {
3785 new_selections.push(selection);
3786 new_selections.push(new_selection);
3787 }
3788
3789 continue 'outer;
3790 }
3791 }
3792 }
3793
3794 new_selections.push(selection);
3795 }
3796 } else {
3797 new_selections = selections;
3798 new_selections.retain(|s| s.id != last_added_selection);
3799 state.stack.pop();
3800 }
3801
3802 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3803 if state.stack.len() > 1 {
3804 self.add_selections_state = Some(state);
3805 }
3806 }
3807
3808 pub fn select_next(&mut self, action: &SelectNext, cx: &mut ViewContext<Self>) {
3809 let replace_newest = action.0;
3810 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3811 let buffer = &display_map.buffer_snapshot;
3812 let mut selections = self.local_selections::<usize>(cx);
3813 if let Some(mut select_next_state) = self.select_next_state.take() {
3814 let query = &select_next_state.query;
3815 if !select_next_state.done {
3816 let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
3817 let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
3818 let mut next_selected_range = None;
3819
3820 let bytes_after_last_selection =
3821 buffer.bytes_in_range(last_selection.end..buffer.len());
3822 let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
3823 let query_matches = query
3824 .stream_find_iter(bytes_after_last_selection)
3825 .map(|result| (last_selection.end, result))
3826 .chain(
3827 query
3828 .stream_find_iter(bytes_before_first_selection)
3829 .map(|result| (0, result)),
3830 );
3831 for (start_offset, query_match) in query_matches {
3832 let query_match = query_match.unwrap(); // can only fail due to I/O
3833 let offset_range =
3834 start_offset + query_match.start()..start_offset + query_match.end();
3835 let display_range = offset_range.start.to_display_point(&display_map)
3836 ..offset_range.end.to_display_point(&display_map);
3837
3838 if !select_next_state.wordwise
3839 || (!movement::is_inside_word(&display_map, display_range.start)
3840 && !movement::is_inside_word(&display_map, display_range.end))
3841 {
3842 next_selected_range = Some(offset_range);
3843 break;
3844 }
3845 }
3846
3847 if let Some(next_selected_range) = next_selected_range {
3848 if replace_newest {
3849 if let Some(newest_id) =
3850 selections.iter().max_by_key(|s| s.id).map(|s| s.id)
3851 {
3852 selections.retain(|s| s.id != newest_id);
3853 }
3854 }
3855 selections.push(Selection {
3856 id: post_inc(&mut self.next_selection_id),
3857 start: next_selected_range.start,
3858 end: next_selected_range.end,
3859 reversed: false,
3860 goal: SelectionGoal::None,
3861 });
3862 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3863 } else {
3864 select_next_state.done = true;
3865 }
3866 }
3867
3868 self.select_next_state = Some(select_next_state);
3869 } else if selections.len() == 1 {
3870 let selection = selections.last_mut().unwrap();
3871 if selection.start == selection.end {
3872 let word_range = movement::surrounding_word(
3873 &display_map,
3874 selection.start.to_display_point(&display_map),
3875 );
3876 selection.start = word_range.start.to_offset(&display_map, Bias::Left);
3877 selection.end = word_range.end.to_offset(&display_map, Bias::Left);
3878 selection.goal = SelectionGoal::None;
3879 selection.reversed = false;
3880
3881 let query = buffer
3882 .text_for_range(selection.start..selection.end)
3883 .collect::<String>();
3884 let select_state = SelectNextState {
3885 query: AhoCorasick::new_auto_configured(&[query]),
3886 wordwise: true,
3887 done: false,
3888 };
3889 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3890 self.select_next_state = Some(select_state);
3891 } else {
3892 let query = buffer
3893 .text_for_range(selection.start..selection.end)
3894 .collect::<String>();
3895 self.select_next_state = Some(SelectNextState {
3896 query: AhoCorasick::new_auto_configured(&[query]),
3897 wordwise: false,
3898 done: false,
3899 });
3900 self.select_next(action, cx);
3901 }
3902 }
3903 }
3904
3905 pub fn toggle_comments(&mut self, _: &ToggleComments, cx: &mut ViewContext<Self>) {
3906 // Get the line comment prefix. Split its trailing whitespace into a separate string,
3907 // as that portion won't be used for detecting if a line is a comment.
3908 let full_comment_prefix =
3909 if let Some(prefix) = self.language(cx).and_then(|l| l.line_comment_prefix()) {
3910 prefix.to_string()
3911 } else {
3912 return;
3913 };
3914 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
3915 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
3916
3917 self.start_transaction(cx);
3918 let mut selections = self.local_selections::<Point>(cx);
3919 let mut all_selection_lines_are_comments = true;
3920 let mut edit_ranges = Vec::new();
3921 let mut last_toggled_row = None;
3922 self.buffer.update(cx, |buffer, cx| {
3923 for selection in &mut selections {
3924 edit_ranges.clear();
3925 let snapshot = buffer.snapshot(cx);
3926
3927 let end_row =
3928 if selection.end.row > selection.start.row && selection.end.column == 0 {
3929 selection.end.row
3930 } else {
3931 selection.end.row + 1
3932 };
3933
3934 for row in selection.start.row..end_row {
3935 // If multiple selections contain a given row, avoid processing that
3936 // row more than once.
3937 if last_toggled_row == Some(row) {
3938 continue;
3939 } else {
3940 last_toggled_row = Some(row);
3941 }
3942
3943 if snapshot.is_line_blank(row) {
3944 continue;
3945 }
3946
3947 let start = Point::new(row, snapshot.indent_column_for_line(row));
3948 let mut line_bytes = snapshot
3949 .bytes_in_range(start..snapshot.max_point())
3950 .flatten()
3951 .copied();
3952
3953 // If this line currently begins with the line comment prefix, then record
3954 // the range containing the prefix.
3955 if all_selection_lines_are_comments
3956 && line_bytes
3957 .by_ref()
3958 .take(comment_prefix.len())
3959 .eq(comment_prefix.bytes())
3960 {
3961 // Include any whitespace that matches the comment prefix.
3962 let matching_whitespace_len = line_bytes
3963 .zip(comment_prefix_whitespace.bytes())
3964 .take_while(|(a, b)| a == b)
3965 .count() as u32;
3966 let end = Point::new(
3967 row,
3968 start.column + comment_prefix.len() as u32 + matching_whitespace_len,
3969 );
3970 edit_ranges.push(start..end);
3971 }
3972 // If this line does not begin with the line comment prefix, then record
3973 // the position where the prefix should be inserted.
3974 else {
3975 all_selection_lines_are_comments = false;
3976 edit_ranges.push(start..start);
3977 }
3978 }
3979
3980 if !edit_ranges.is_empty() {
3981 if all_selection_lines_are_comments {
3982 buffer.edit(edit_ranges.iter().cloned(), "", cx);
3983 } else {
3984 let min_column = edit_ranges.iter().map(|r| r.start.column).min().unwrap();
3985 let edit_ranges = edit_ranges.iter().map(|range| {
3986 let position = Point::new(range.start.row, min_column);
3987 position..position
3988 });
3989 buffer.edit(edit_ranges, &full_comment_prefix, cx);
3990 }
3991 }
3992 }
3993 });
3994
3995 self.update_selections(
3996 self.local_selections::<usize>(cx),
3997 Some(Autoscroll::Fit),
3998 cx,
3999 );
4000 self.end_transaction(cx);
4001 }
4002
4003 pub fn select_larger_syntax_node(
4004 &mut self,
4005 _: &SelectLargerSyntaxNode,
4006 cx: &mut ViewContext<Self>,
4007 ) {
4008 let old_selections = self.local_selections::<usize>(cx).into_boxed_slice();
4009 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4010 let buffer = self.buffer.read(cx).snapshot(cx);
4011
4012 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
4013 let mut selected_larger_node = false;
4014 let new_selections = old_selections
4015 .iter()
4016 .map(|selection| {
4017 let old_range = selection.start..selection.end;
4018 let mut new_range = old_range.clone();
4019 while let Some(containing_range) =
4020 buffer.range_for_syntax_ancestor(new_range.clone())
4021 {
4022 new_range = containing_range;
4023 if !display_map.intersects_fold(new_range.start)
4024 && !display_map.intersects_fold(new_range.end)
4025 {
4026 break;
4027 }
4028 }
4029
4030 selected_larger_node |= new_range != old_range;
4031 Selection {
4032 id: selection.id,
4033 start: new_range.start,
4034 end: new_range.end,
4035 goal: SelectionGoal::None,
4036 reversed: selection.reversed,
4037 }
4038 })
4039 .collect::<Vec<_>>();
4040
4041 if selected_larger_node {
4042 stack.push(old_selections);
4043 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
4044 }
4045 self.select_larger_syntax_node_stack = stack;
4046 }
4047
4048 pub fn select_smaller_syntax_node(
4049 &mut self,
4050 _: &SelectSmallerSyntaxNode,
4051 cx: &mut ViewContext<Self>,
4052 ) {
4053 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
4054 if let Some(selections) = stack.pop() {
4055 self.update_selections(selections.to_vec(), Some(Autoscroll::Fit), cx);
4056 }
4057 self.select_larger_syntax_node_stack = stack;
4058 }
4059
4060 pub fn move_to_enclosing_bracket(
4061 &mut self,
4062 _: &MoveToEnclosingBracket,
4063 cx: &mut ViewContext<Self>,
4064 ) {
4065 let mut selections = self.local_selections::<usize>(cx);
4066 let buffer = self.buffer.read(cx).snapshot(cx);
4067 for selection in &mut selections {
4068 if let Some((open_range, close_range)) =
4069 buffer.enclosing_bracket_ranges(selection.start..selection.end)
4070 {
4071 let close_range = close_range.to_inclusive();
4072 let destination = if close_range.contains(&selection.start)
4073 && close_range.contains(&selection.end)
4074 {
4075 open_range.end
4076 } else {
4077 *close_range.start()
4078 };
4079 selection.start = destination;
4080 selection.end = destination;
4081 }
4082 }
4083
4084 self.update_selections(selections, Some(Autoscroll::Fit), cx);
4085 }
4086
4087 pub fn show_next_diagnostic(&mut self, _: &ShowNextDiagnostic, cx: &mut ViewContext<Self>) {
4088 let buffer = self.buffer.read(cx).snapshot(cx);
4089 let selection = self.newest_selection::<usize>(&buffer);
4090 let mut active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
4091 active_diagnostics
4092 .primary_range
4093 .to_offset(&buffer)
4094 .to_inclusive()
4095 });
4096 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
4097 if active_primary_range.contains(&selection.head()) {
4098 *active_primary_range.end()
4099 } else {
4100 selection.head()
4101 }
4102 } else {
4103 selection.head()
4104 };
4105
4106 loop {
4107 let next_group = buffer
4108 .diagnostics_in_range::<_, usize>(search_start..buffer.len())
4109 .find_map(|entry| {
4110 if entry.diagnostic.is_primary
4111 && !entry.range.is_empty()
4112 && Some(entry.range.end) != active_primary_range.as_ref().map(|r| *r.end())
4113 {
4114 Some((entry.range, entry.diagnostic.group_id))
4115 } else {
4116 None
4117 }
4118 });
4119
4120 if let Some((primary_range, group_id)) = next_group {
4121 self.activate_diagnostics(group_id, cx);
4122 self.update_selections(
4123 vec![Selection {
4124 id: selection.id,
4125 start: primary_range.start,
4126 end: primary_range.start,
4127 reversed: false,
4128 goal: SelectionGoal::None,
4129 }],
4130 Some(Autoscroll::Center),
4131 cx,
4132 );
4133 break;
4134 } else if search_start == 0 {
4135 break;
4136 } else {
4137 // Cycle around to the start of the buffer, potentially moving back to the start of
4138 // the currently active diagnostic.
4139 search_start = 0;
4140 active_primary_range.take();
4141 }
4142 }
4143 }
4144
4145 pub fn go_to_definition(
4146 workspace: &mut Workspace,
4147 _: &GoToDefinition,
4148 cx: &mut ViewContext<Workspace>,
4149 ) {
4150 let active_item = workspace.active_item(cx);
4151 let editor_handle = if let Some(editor) = active_item
4152 .as_ref()
4153 .and_then(|item| item.act_as::<Self>(cx))
4154 {
4155 editor
4156 } else {
4157 return;
4158 };
4159
4160 let editor = editor_handle.read(cx);
4161 let buffer = editor.buffer.read(cx);
4162 let head = editor.newest_selection::<usize>(&buffer.read(cx)).head();
4163 let (buffer, head) =
4164 if let Some(text_anchor) = editor.buffer.read(cx).text_anchor_for_position(head, cx) {
4165 text_anchor
4166 } else {
4167 return;
4168 };
4169
4170 let definitions = workspace
4171 .project()
4172 .update(cx, |project, cx| project.definition(&buffer, head, cx));
4173 cx.spawn(|workspace, mut cx| async move {
4174 let definitions = definitions.await?;
4175 workspace.update(&mut cx, |workspace, cx| {
4176 let nav_history = workspace.active_pane().read(cx).nav_history().clone();
4177 for definition in definitions {
4178 let range = definition.range.to_offset(definition.buffer.read(cx));
4179 let target_editor_handle = workspace
4180 .open_item(BufferItemHandle(definition.buffer), cx)
4181 .downcast::<Self>()
4182 .unwrap();
4183
4184 target_editor_handle.update(cx, |target_editor, cx| {
4185 // When selecting a definition in a different buffer, disable the nav history
4186 // to avoid creating a history entry at the previous cursor location.
4187 if editor_handle != target_editor_handle {
4188 nav_history.borrow_mut().disable();
4189 }
4190 target_editor.select_ranges([range], Some(Autoscroll::Center), cx);
4191 nav_history.borrow_mut().enable();
4192 });
4193 }
4194 });
4195
4196 Ok::<(), anyhow::Error>(())
4197 })
4198 .detach_and_log_err(cx);
4199 }
4200
4201 pub fn find_all_references(
4202 workspace: &mut Workspace,
4203 _: &FindAllReferences,
4204 cx: &mut ViewContext<Workspace>,
4205 ) -> Option<Task<Result<()>>> {
4206 let active_item = workspace.active_item(cx)?;
4207 let editor_handle = active_item.act_as::<Self>(cx)?;
4208
4209 let editor = editor_handle.read(cx);
4210 let buffer = editor.buffer.read(cx);
4211 let head = editor.newest_selection::<usize>(&buffer.read(cx)).head();
4212 let (buffer, head) = editor.buffer.read(cx).text_anchor_for_position(head, cx)?;
4213 let replica_id = editor.replica_id(cx);
4214
4215 let references = workspace
4216 .project()
4217 .update(cx, |project, cx| project.references(&buffer, head, cx));
4218 Some(cx.spawn(|workspace, mut cx| async move {
4219 let mut locations = references.await?;
4220 if locations.is_empty() {
4221 return Ok(());
4222 }
4223
4224 locations.sort_by_key(|location| location.buffer.id());
4225 let mut locations = locations.into_iter().peekable();
4226 let mut ranges_to_highlight = Vec::new();
4227
4228 let excerpt_buffer = cx.add_model(|cx| {
4229 let mut symbol_name = None;
4230 let mut multibuffer = MultiBuffer::new(replica_id);
4231 while let Some(location) = locations.next() {
4232 let buffer = location.buffer.read(cx);
4233 let mut ranges_for_buffer = Vec::new();
4234 let range = location.range.to_offset(buffer);
4235 ranges_for_buffer.push(range.clone());
4236 if symbol_name.is_none() {
4237 symbol_name = Some(buffer.text_for_range(range).collect::<String>());
4238 }
4239
4240 while let Some(next_location) = locations.peek() {
4241 if next_location.buffer == location.buffer {
4242 ranges_for_buffer.push(next_location.range.to_offset(buffer));
4243 locations.next();
4244 } else {
4245 break;
4246 }
4247 }
4248
4249 ranges_for_buffer.sort_by_key(|range| (range.start, Reverse(range.end)));
4250 ranges_to_highlight.extend(multibuffer.push_excerpts_with_context_lines(
4251 location.buffer.clone(),
4252 ranges_for_buffer,
4253 1,
4254 cx,
4255 ));
4256 }
4257 multibuffer.with_title(format!("References to `{}`", symbol_name.unwrap()))
4258 });
4259
4260 workspace.update(&mut cx, |workspace, cx| {
4261 let editor = workspace.open_item(MultiBufferItemHandle(excerpt_buffer), cx);
4262 if let Some(editor) = editor.act_as::<Self>(cx) {
4263 editor.update(cx, |editor, cx| {
4264 let color = editor.style(cx).highlighted_line_background;
4265 editor.highlight_ranges::<Self>(ranges_to_highlight, color, cx);
4266 });
4267 }
4268 });
4269
4270 Ok(())
4271 }))
4272 }
4273
4274 pub fn rename(&mut self, _: &Rename, cx: &mut ViewContext<Self>) -> Option<Task<Result<()>>> {
4275 use language::ToOffset as _;
4276
4277 let project = self.project.clone()?;
4278 let selection = self.newest_anchor_selection().clone();
4279 let (cursor_buffer, cursor_buffer_position) = self
4280 .buffer
4281 .read(cx)
4282 .text_anchor_for_position(selection.head(), cx)?;
4283 let (tail_buffer, tail_buffer_position) = self
4284 .buffer
4285 .read(cx)
4286 .text_anchor_for_position(selection.tail(), cx)?;
4287 if tail_buffer != cursor_buffer {
4288 return None;
4289 }
4290
4291 let snapshot = cursor_buffer.read(cx).snapshot();
4292 let cursor_buffer_offset = cursor_buffer_position.to_offset(&snapshot);
4293 let tail_buffer_offset = tail_buffer_position.to_offset(&snapshot);
4294 let prepare_rename = project.update(cx, |project, cx| {
4295 project.prepare_rename(cursor_buffer, cursor_buffer_offset, cx)
4296 });
4297
4298 Some(cx.spawn(|this, mut cx| async move {
4299 if let Some(rename_range) = prepare_rename.await? {
4300 let rename_buffer_range = rename_range.to_offset(&snapshot);
4301 let cursor_offset_in_rename_range =
4302 cursor_buffer_offset.saturating_sub(rename_buffer_range.start);
4303 let tail_offset_in_rename_range =
4304 tail_buffer_offset.saturating_sub(rename_buffer_range.start);
4305
4306 this.update(&mut cx, |this, cx| {
4307 this.take_rename(cx);
4308 let style = this.style(cx);
4309 let buffer = this.buffer.read(cx).read(cx);
4310 let cursor_offset = selection.head().to_offset(&buffer);
4311 let rename_start = cursor_offset.saturating_sub(cursor_offset_in_rename_range);
4312 let rename_end = rename_start + rename_buffer_range.len();
4313 let range = buffer.anchor_before(rename_start)..buffer.anchor_after(rename_end);
4314 let old_name = buffer
4315 .text_for_range(rename_start..rename_end)
4316 .collect::<String>();
4317 drop(buffer);
4318
4319 // Position the selection in the rename editor so that it matches the current selection.
4320 let rename_editor = cx.add_view(|cx| {
4321 let mut editor = Editor::single_line(this.settings.clone(), None, cx);
4322 editor
4323 .buffer
4324 .update(cx, |buffer, cx| buffer.edit([0..0], &old_name, cx));
4325 editor.select_ranges(
4326 [tail_offset_in_rename_range..cursor_offset_in_rename_range],
4327 None,
4328 cx,
4329 );
4330 editor.highlight_ranges::<Rename>(
4331 vec![Anchor::min()..Anchor::max()],
4332 style.diff_background_inserted,
4333 cx,
4334 );
4335 editor
4336 });
4337 this.highlight_ranges::<Rename>(
4338 vec![range.clone()],
4339 style.diff_background_deleted,
4340 cx,
4341 );
4342 this.update_selections(
4343 vec![Selection {
4344 id: selection.id,
4345 start: rename_end,
4346 end: rename_end,
4347 reversed: false,
4348 goal: SelectionGoal::None,
4349 }],
4350 None,
4351 cx,
4352 );
4353 cx.focus(&rename_editor);
4354 let block_id = this.insert_blocks(
4355 [BlockProperties {
4356 position: range.start.clone(),
4357 height: 1,
4358 render: Arc::new({
4359 let editor = rename_editor.clone();
4360 move |cx: &BlockContext| {
4361 ChildView::new(editor.clone())
4362 .contained()
4363 .with_padding_left(cx.anchor_x)
4364 .boxed()
4365 }
4366 }),
4367 disposition: BlockDisposition::Below,
4368 }],
4369 cx,
4370 )[0];
4371 this.pending_rename = Some(RenameState {
4372 range,
4373 old_name,
4374 editor: rename_editor,
4375 block_id,
4376 });
4377 });
4378 }
4379
4380 Ok(())
4381 }))
4382 }
4383
4384 pub fn confirm_rename(
4385 workspace: &mut Workspace,
4386 _: &ConfirmRename,
4387 cx: &mut ViewContext<Workspace>,
4388 ) -> Option<Task<Result<()>>> {
4389 let editor = workspace.active_item(cx)?.act_as::<Editor>(cx)?;
4390
4391 let (buffer, range, old_name, new_name) = editor.update(cx, |editor, cx| {
4392 let rename = editor.take_rename(cx)?;
4393 let buffer = editor.buffer.read(cx);
4394 let (start_buffer, start) =
4395 buffer.text_anchor_for_position(rename.range.start.clone(), cx)?;
4396 let (end_buffer, end) =
4397 buffer.text_anchor_for_position(rename.range.end.clone(), cx)?;
4398 if start_buffer == end_buffer {
4399 let new_name = rename.editor.read(cx).text(cx);
4400 Some((start_buffer, start..end, rename.old_name, new_name))
4401 } else {
4402 None
4403 }
4404 })?;
4405
4406 let rename = workspace.project().clone().update(cx, |project, cx| {
4407 project.perform_rename(
4408 buffer.clone(),
4409 range.start.clone(),
4410 new_name.clone(),
4411 true,
4412 cx,
4413 )
4414 });
4415
4416 Some(cx.spawn(|workspace, cx| async move {
4417 let project_transaction = rename.await?;
4418 Self::open_project_transaction(
4419 editor,
4420 workspace,
4421 project_transaction,
4422 format!("Rename: {} → {}", old_name, new_name),
4423 cx,
4424 )
4425 .await
4426 }))
4427 }
4428
4429 fn take_rename(&mut self, cx: &mut ViewContext<Self>) -> Option<RenameState> {
4430 let rename = self.pending_rename.take()?;
4431 self.remove_blocks([rename.block_id].into_iter().collect(), cx);
4432 self.clear_highlighted_ranges::<Rename>(cx);
4433
4434 let editor = rename.editor.read(cx);
4435 let buffer = editor.buffer.read(cx).snapshot(cx);
4436 let selection = editor.newest_selection::<usize>(&buffer);
4437
4438 // Update the selection to match the position of the selection inside
4439 // the rename editor.
4440 let snapshot = self.buffer.read(cx).snapshot(cx);
4441 let rename_range = rename.range.to_offset(&snapshot);
4442 let start = snapshot
4443 .clip_offset(rename_range.start + selection.start, Bias::Left)
4444 .min(rename_range.end);
4445 let end = snapshot
4446 .clip_offset(rename_range.start + selection.end, Bias::Left)
4447 .min(rename_range.end);
4448 self.update_selections(
4449 vec![Selection {
4450 id: self.newest_anchor_selection().id,
4451 start,
4452 end,
4453 reversed: selection.reversed,
4454 goal: SelectionGoal::None,
4455 }],
4456 None,
4457 cx,
4458 );
4459
4460 Some(rename)
4461 }
4462
4463 fn invalidate_rename_range(
4464 &mut self,
4465 buffer: &MultiBufferSnapshot,
4466 cx: &mut ViewContext<Self>,
4467 ) {
4468 if let Some(rename) = self.pending_rename.as_ref() {
4469 if self.selections.len() == 1 {
4470 let head = self.selections[0].head().to_offset(buffer);
4471 let range = rename.range.to_offset(buffer).to_inclusive();
4472 if range.contains(&head) {
4473 return;
4474 }
4475 }
4476 let rename = self.pending_rename.take().unwrap();
4477 self.remove_blocks([rename.block_id].into_iter().collect(), cx);
4478 self.clear_highlighted_ranges::<Rename>(cx);
4479 }
4480 }
4481
4482 #[cfg(any(test, feature = "test-support"))]
4483 pub fn pending_rename(&self) -> Option<&RenameState> {
4484 self.pending_rename.as_ref()
4485 }
4486
4487 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
4488 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
4489 let buffer = self.buffer.read(cx).snapshot(cx);
4490 let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
4491 let is_valid = buffer
4492 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone())
4493 .any(|entry| {
4494 entry.diagnostic.is_primary
4495 && !entry.range.is_empty()
4496 && entry.range.start == primary_range_start
4497 && entry.diagnostic.message == active_diagnostics.primary_message
4498 });
4499
4500 if is_valid != active_diagnostics.is_valid {
4501 active_diagnostics.is_valid = is_valid;
4502 let mut new_styles = HashMap::default();
4503 for (block_id, diagnostic) in &active_diagnostics.blocks {
4504 new_styles.insert(
4505 *block_id,
4506 diagnostic_block_renderer(
4507 diagnostic.clone(),
4508 is_valid,
4509 self.settings.clone(),
4510 ),
4511 );
4512 }
4513 self.display_map
4514 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
4515 }
4516 }
4517 }
4518
4519 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) {
4520 self.dismiss_diagnostics(cx);
4521 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
4522 let buffer = self.buffer.read(cx).snapshot(cx);
4523
4524 let mut primary_range = None;
4525 let mut primary_message = None;
4526 let mut group_end = Point::zero();
4527 let diagnostic_group = buffer
4528 .diagnostic_group::<Point>(group_id)
4529 .map(|entry| {
4530 if entry.range.end > group_end {
4531 group_end = entry.range.end;
4532 }
4533 if entry.diagnostic.is_primary {
4534 primary_range = Some(entry.range.clone());
4535 primary_message = Some(entry.diagnostic.message.clone());
4536 }
4537 entry
4538 })
4539 .collect::<Vec<_>>();
4540 let primary_range = primary_range.unwrap();
4541 let primary_message = primary_message.unwrap();
4542 let primary_range =
4543 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
4544
4545 let blocks = display_map
4546 .insert_blocks(
4547 diagnostic_group.iter().map(|entry| {
4548 let diagnostic = entry.diagnostic.clone();
4549 let message_height = diagnostic.message.lines().count() as u8;
4550 BlockProperties {
4551 position: buffer.anchor_after(entry.range.start),
4552 height: message_height,
4553 render: diagnostic_block_renderer(
4554 diagnostic,
4555 true,
4556 self.settings.clone(),
4557 ),
4558 disposition: BlockDisposition::Below,
4559 }
4560 }),
4561 cx,
4562 )
4563 .into_iter()
4564 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
4565 .collect();
4566
4567 Some(ActiveDiagnosticGroup {
4568 primary_range,
4569 primary_message,
4570 blocks,
4571 is_valid: true,
4572 })
4573 });
4574 }
4575
4576 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
4577 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
4578 self.display_map.update(cx, |display_map, cx| {
4579 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
4580 });
4581 cx.notify();
4582 }
4583 }
4584
4585 fn build_columnar_selection(
4586 &mut self,
4587 display_map: &DisplaySnapshot,
4588 row: u32,
4589 columns: &Range<u32>,
4590 reversed: bool,
4591 ) -> Option<Selection<Point>> {
4592 let is_empty = columns.start == columns.end;
4593 let line_len = display_map.line_len(row);
4594 if columns.start < line_len || (is_empty && columns.start == line_len) {
4595 let start = DisplayPoint::new(row, columns.start);
4596 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
4597 Some(Selection {
4598 id: post_inc(&mut self.next_selection_id),
4599 start: start.to_point(display_map),
4600 end: end.to_point(display_map),
4601 reversed,
4602 goal: SelectionGoal::ColumnRange {
4603 start: columns.start,
4604 end: columns.end,
4605 },
4606 })
4607 } else {
4608 None
4609 }
4610 }
4611
4612 pub fn local_selections_in_range(
4613 &self,
4614 range: Range<Anchor>,
4615 display_map: &DisplaySnapshot,
4616 ) -> Vec<Selection<Point>> {
4617 let buffer = &display_map.buffer_snapshot;
4618
4619 let start_ix = match self
4620 .selections
4621 .binary_search_by(|probe| probe.end.cmp(&range.start, &buffer).unwrap())
4622 {
4623 Ok(ix) | Err(ix) => ix,
4624 };
4625 let end_ix = match self
4626 .selections
4627 .binary_search_by(|probe| probe.start.cmp(&range.end, &buffer).unwrap())
4628 {
4629 Ok(ix) => ix + 1,
4630 Err(ix) => ix,
4631 };
4632
4633 fn point_selection(
4634 selection: &Selection<Anchor>,
4635 buffer: &MultiBufferSnapshot,
4636 ) -> Selection<Point> {
4637 let start = selection.start.to_point(&buffer);
4638 let end = selection.end.to_point(&buffer);
4639 Selection {
4640 id: selection.id,
4641 start,
4642 end,
4643 reversed: selection.reversed,
4644 goal: selection.goal,
4645 }
4646 }
4647
4648 self.selections[start_ix..end_ix]
4649 .iter()
4650 .chain(
4651 self.pending_selection
4652 .as_ref()
4653 .map(|pending| &pending.selection),
4654 )
4655 .map(|s| point_selection(s, &buffer))
4656 .collect()
4657 }
4658
4659 pub fn local_selections<'a, D>(&self, cx: &'a AppContext) -> Vec<Selection<D>>
4660 where
4661 D: 'a + TextDimension + Ord + Sub<D, Output = D>,
4662 {
4663 let buffer = self.buffer.read(cx).snapshot(cx);
4664 let mut selections = self
4665 .resolve_selections::<D, _>(self.selections.iter(), &buffer)
4666 .peekable();
4667
4668 let mut pending_selection = self.pending_selection::<D>(&buffer);
4669
4670 iter::from_fn(move || {
4671 if let Some(pending) = pending_selection.as_mut() {
4672 while let Some(next_selection) = selections.peek() {
4673 if pending.start <= next_selection.end && pending.end >= next_selection.start {
4674 let next_selection = selections.next().unwrap();
4675 if next_selection.start < pending.start {
4676 pending.start = next_selection.start;
4677 }
4678 if next_selection.end > pending.end {
4679 pending.end = next_selection.end;
4680 }
4681 } else if next_selection.end < pending.start {
4682 return selections.next();
4683 } else {
4684 break;
4685 }
4686 }
4687
4688 pending_selection.take()
4689 } else {
4690 selections.next()
4691 }
4692 })
4693 .collect()
4694 }
4695
4696 fn resolve_selections<'a, D, I>(
4697 &self,
4698 selections: I,
4699 snapshot: &MultiBufferSnapshot,
4700 ) -> impl 'a + Iterator<Item = Selection<D>>
4701 where
4702 D: TextDimension + Ord + Sub<D, Output = D>,
4703 I: 'a + IntoIterator<Item = &'a Selection<Anchor>>,
4704 {
4705 let (to_summarize, selections) = selections.into_iter().tee();
4706 let mut summaries = snapshot
4707 .summaries_for_anchors::<D, _>(to_summarize.flat_map(|s| [&s.start, &s.end]))
4708 .into_iter();
4709 selections.map(move |s| Selection {
4710 id: s.id,
4711 start: summaries.next().unwrap(),
4712 end: summaries.next().unwrap(),
4713 reversed: s.reversed,
4714 goal: s.goal,
4715 })
4716 }
4717
4718 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4719 &self,
4720 snapshot: &MultiBufferSnapshot,
4721 ) -> Option<Selection<D>> {
4722 self.pending_selection
4723 .as_ref()
4724 .map(|pending| self.resolve_selection(&pending.selection, &snapshot))
4725 }
4726
4727 fn resolve_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4728 &self,
4729 selection: &Selection<Anchor>,
4730 buffer: &MultiBufferSnapshot,
4731 ) -> Selection<D> {
4732 Selection {
4733 id: selection.id,
4734 start: selection.start.summary::<D>(&buffer),
4735 end: selection.end.summary::<D>(&buffer),
4736 reversed: selection.reversed,
4737 goal: selection.goal,
4738 }
4739 }
4740
4741 fn selection_count<'a>(&self) -> usize {
4742 let mut count = self.selections.len();
4743 if self.pending_selection.is_some() {
4744 count += 1;
4745 }
4746 count
4747 }
4748
4749 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4750 &self,
4751 snapshot: &MultiBufferSnapshot,
4752 ) -> Selection<D> {
4753 self.selections
4754 .iter()
4755 .min_by_key(|s| s.id)
4756 .map(|selection| self.resolve_selection(selection, snapshot))
4757 .or_else(|| self.pending_selection(snapshot))
4758 .unwrap()
4759 }
4760
4761 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4762 &self,
4763 snapshot: &MultiBufferSnapshot,
4764 ) -> Selection<D> {
4765 self.resolve_selection(self.newest_anchor_selection(), snapshot)
4766 }
4767
4768 pub fn newest_anchor_selection(&self) -> &Selection<Anchor> {
4769 self.pending_selection
4770 .as_ref()
4771 .map(|s| &s.selection)
4772 .or_else(|| self.selections.iter().max_by_key(|s| s.id))
4773 .unwrap()
4774 }
4775
4776 pub fn update_selections<T>(
4777 &mut self,
4778 mut selections: Vec<Selection<T>>,
4779 autoscroll: Option<Autoscroll>,
4780 cx: &mut ViewContext<Self>,
4781 ) where
4782 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
4783 {
4784 let buffer = self.buffer.read(cx).snapshot(cx);
4785 selections.sort_unstable_by_key(|s| s.start);
4786
4787 // Merge overlapping selections.
4788 let mut i = 1;
4789 while i < selections.len() {
4790 if selections[i - 1].end >= selections[i].start {
4791 let removed = selections.remove(i);
4792 if removed.start < selections[i - 1].start {
4793 selections[i - 1].start = removed.start;
4794 }
4795 if removed.end > selections[i - 1].end {
4796 selections[i - 1].end = removed.end;
4797 }
4798 } else {
4799 i += 1;
4800 }
4801 }
4802
4803 if let Some(autoscroll) = autoscroll {
4804 self.request_autoscroll(autoscroll, cx);
4805 }
4806
4807 self.set_selections(
4808 Arc::from_iter(selections.into_iter().map(|selection| {
4809 let end_bias = if selection.end > selection.start {
4810 Bias::Left
4811 } else {
4812 Bias::Right
4813 };
4814 Selection {
4815 id: selection.id,
4816 start: buffer.anchor_after(selection.start),
4817 end: buffer.anchor_at(selection.end, end_bias),
4818 reversed: selection.reversed,
4819 goal: selection.goal,
4820 }
4821 })),
4822 None,
4823 cx,
4824 );
4825 }
4826
4827 /// Compute new ranges for any selections that were located in excerpts that have
4828 /// since been removed.
4829 ///
4830 /// Returns a `HashMap` indicating which selections whose former head position
4831 /// was no longer present. The keys of the map are selection ids. The values are
4832 /// the id of the new excerpt where the head of the selection has been moved.
4833 pub fn refresh_selections(&mut self, cx: &mut ViewContext<Self>) -> HashMap<usize, ExcerptId> {
4834 let snapshot = self.buffer.read(cx).read(cx);
4835 let anchors_with_status = snapshot.refresh_anchors(
4836 self.selections
4837 .iter()
4838 .flat_map(|selection| [&selection.start, &selection.end]),
4839 );
4840 let offsets =
4841 snapshot.summaries_for_anchors::<usize, _>(anchors_with_status.iter().map(|a| &a.1));
4842 let offsets = offsets.chunks(2);
4843 let statuses = anchors_with_status
4844 .chunks(2)
4845 .map(|a| (a[0].0 / 2, a[0].2, a[1].2));
4846
4847 let mut selections_with_lost_position = HashMap::default();
4848 let new_selections = offsets
4849 .zip(statuses)
4850 .map(|(offsets, (selection_ix, kept_start, kept_end))| {
4851 let selection = &self.selections[selection_ix];
4852 let kept_head = if selection.reversed {
4853 kept_start
4854 } else {
4855 kept_end
4856 };
4857 if !kept_head {
4858 selections_with_lost_position
4859 .insert(selection.id, selection.head().excerpt_id.clone());
4860 }
4861
4862 Selection {
4863 id: selection.id,
4864 start: offsets[0],
4865 end: offsets[1],
4866 reversed: selection.reversed,
4867 goal: selection.goal,
4868 }
4869 })
4870 .collect();
4871 drop(snapshot);
4872 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
4873 selections_with_lost_position
4874 }
4875
4876 fn set_selections(
4877 &mut self,
4878 selections: Arc<[Selection<Anchor>]>,
4879 pending_selection: Option<PendingSelection>,
4880 cx: &mut ViewContext<Self>,
4881 ) {
4882 let old_cursor_position = self.newest_anchor_selection().head();
4883
4884 self.selections = selections;
4885 self.pending_selection = pending_selection;
4886 if self.focused {
4887 self.buffer.update(cx, |buffer, cx| {
4888 buffer.set_active_selections(&self.selections, cx)
4889 });
4890 }
4891
4892 let display_map = self
4893 .display_map
4894 .update(cx, |display_map, cx| display_map.snapshot(cx));
4895 let buffer = &display_map.buffer_snapshot;
4896 self.add_selections_state = None;
4897 self.select_next_state = None;
4898 self.select_larger_syntax_node_stack.clear();
4899 self.autoclose_stack.invalidate(&self.selections, &buffer);
4900 self.snippet_stack.invalidate(&self.selections, &buffer);
4901 self.invalidate_rename_range(&buffer, cx);
4902
4903 let new_cursor_position = self.newest_anchor_selection().head();
4904
4905 self.push_to_nav_history(
4906 old_cursor_position.clone(),
4907 Some(new_cursor_position.to_point(&buffer)),
4908 cx,
4909 );
4910
4911 let completion_menu = match self.context_menu.as_mut() {
4912 Some(ContextMenu::Completions(menu)) => Some(menu),
4913 _ => {
4914 self.context_menu.take();
4915 None
4916 }
4917 };
4918
4919 if let Some(completion_menu) = completion_menu {
4920 let cursor_position = new_cursor_position.to_offset(&buffer);
4921 let (word_range, kind) =
4922 buffer.surrounding_word(completion_menu.initial_position.clone());
4923 if kind == Some(CharKind::Word) && word_range.to_inclusive().contains(&cursor_position)
4924 {
4925 let query = Self::completion_query(&buffer, cursor_position);
4926 cx.background()
4927 .block(completion_menu.filter(query.as_deref(), cx.background().clone()));
4928 self.show_completions(&ShowCompletions, cx);
4929 } else {
4930 self.hide_context_menu(cx);
4931 }
4932 }
4933
4934 if old_cursor_position.to_display_point(&display_map).row()
4935 != new_cursor_position.to_display_point(&display_map).row()
4936 {
4937 self.available_code_actions.take();
4938 }
4939 self.refresh_code_actions(cx);
4940 self.refresh_document_highlights(cx);
4941
4942 self.pause_cursor_blinking(cx);
4943 cx.emit(Event::SelectionsChanged);
4944 }
4945
4946 pub fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
4947 self.autoscroll_request = Some(autoscroll);
4948 cx.notify();
4949 }
4950
4951 fn start_transaction(&mut self, cx: &mut ViewContext<Self>) {
4952 self.start_transaction_at(Instant::now(), cx);
4953 }
4954
4955 fn start_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
4956 self.end_selection(cx);
4957 if let Some(tx_id) = self
4958 .buffer
4959 .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
4960 {
4961 self.selection_history
4962 .insert(tx_id, (self.selections.clone(), None));
4963 }
4964 }
4965
4966 fn end_transaction(&mut self, cx: &mut ViewContext<Self>) {
4967 self.end_transaction_at(Instant::now(), cx);
4968 }
4969
4970 fn end_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
4971 if let Some(tx_id) = self
4972 .buffer
4973 .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
4974 {
4975 if let Some((_, end_selections)) = self.selection_history.get_mut(&tx_id) {
4976 *end_selections = Some(self.selections.clone());
4977 } else {
4978 log::error!("unexpectedly ended a transaction that wasn't started by this editor");
4979 }
4980 }
4981 }
4982
4983 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
4984 log::info!("Editor::page_up");
4985 }
4986
4987 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
4988 log::info!("Editor::page_down");
4989 }
4990
4991 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
4992 let mut fold_ranges = Vec::new();
4993
4994 let selections = self.local_selections::<Point>(cx);
4995 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4996 for selection in selections {
4997 let range = selection.display_range(&display_map).sorted();
4998 let buffer_start_row = range.start.to_point(&display_map).row;
4999
5000 for row in (0..=range.end.row()).rev() {
5001 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
5002 let fold_range = self.foldable_range_for_line(&display_map, row);
5003 if fold_range.end.row >= buffer_start_row {
5004 fold_ranges.push(fold_range);
5005 if row <= range.start.row() {
5006 break;
5007 }
5008 }
5009 }
5010 }
5011 }
5012
5013 self.fold_ranges(fold_ranges, cx);
5014 }
5015
5016 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
5017 let selections = self.local_selections::<Point>(cx);
5018 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
5019 let buffer = &display_map.buffer_snapshot;
5020 let ranges = selections
5021 .iter()
5022 .map(|s| {
5023 let range = s.display_range(&display_map).sorted();
5024 let mut start = range.start.to_point(&display_map);
5025 let mut end = range.end.to_point(&display_map);
5026 start.column = 0;
5027 end.column = buffer.line_len(end.row);
5028 start..end
5029 })
5030 .collect::<Vec<_>>();
5031 self.unfold_ranges(ranges, cx);
5032 }
5033
5034 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
5035 let max_point = display_map.max_point();
5036 if display_row >= max_point.row() {
5037 false
5038 } else {
5039 let (start_indent, is_blank) = display_map.line_indent(display_row);
5040 if is_blank {
5041 false
5042 } else {
5043 for display_row in display_row + 1..=max_point.row() {
5044 let (indent, is_blank) = display_map.line_indent(display_row);
5045 if !is_blank {
5046 return indent > start_indent;
5047 }
5048 }
5049 false
5050 }
5051 }
5052 }
5053
5054 fn foldable_range_for_line(
5055 &self,
5056 display_map: &DisplaySnapshot,
5057 start_row: u32,
5058 ) -> Range<Point> {
5059 let max_point = display_map.max_point();
5060
5061 let (start_indent, _) = display_map.line_indent(start_row);
5062 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
5063 let mut end = None;
5064 for row in start_row + 1..=max_point.row() {
5065 let (indent, is_blank) = display_map.line_indent(row);
5066 if !is_blank && indent <= start_indent {
5067 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
5068 break;
5069 }
5070 }
5071
5072 let end = end.unwrap_or(max_point);
5073 return start.to_point(display_map)..end.to_point(display_map);
5074 }
5075
5076 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
5077 let selections = self.local_selections::<Point>(cx);
5078 let ranges = selections.into_iter().map(|s| s.start..s.end);
5079 self.fold_ranges(ranges, cx);
5080 }
5081
5082 fn fold_ranges<T: ToOffset>(
5083 &mut self,
5084 ranges: impl IntoIterator<Item = Range<T>>,
5085 cx: &mut ViewContext<Self>,
5086 ) {
5087 let mut ranges = ranges.into_iter().peekable();
5088 if ranges.peek().is_some() {
5089 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
5090 self.request_autoscroll(Autoscroll::Fit, cx);
5091 cx.notify();
5092 }
5093 }
5094
5095 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
5096 if !ranges.is_empty() {
5097 self.display_map
5098 .update(cx, |map, cx| map.unfold(ranges, cx));
5099 self.request_autoscroll(Autoscroll::Fit, cx);
5100 cx.notify();
5101 }
5102 }
5103
5104 pub fn insert_blocks(
5105 &mut self,
5106 blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
5107 cx: &mut ViewContext<Self>,
5108 ) -> Vec<BlockId> {
5109 let blocks = self
5110 .display_map
5111 .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
5112 self.request_autoscroll(Autoscroll::Fit, cx);
5113 blocks
5114 }
5115
5116 pub fn replace_blocks(
5117 &mut self,
5118 blocks: HashMap<BlockId, RenderBlock>,
5119 cx: &mut ViewContext<Self>,
5120 ) {
5121 self.display_map
5122 .update(cx, |display_map, _| display_map.replace_blocks(blocks));
5123 self.request_autoscroll(Autoscroll::Fit, cx);
5124 }
5125
5126 pub fn remove_blocks(&mut self, block_ids: HashSet<BlockId>, cx: &mut ViewContext<Self>) {
5127 self.display_map.update(cx, |display_map, cx| {
5128 display_map.remove_blocks(block_ids, cx)
5129 });
5130 }
5131
5132 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
5133 self.display_map
5134 .update(cx, |map, cx| map.snapshot(cx))
5135 .longest_row()
5136 }
5137
5138 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
5139 self.display_map
5140 .update(cx, |map, cx| map.snapshot(cx))
5141 .max_point()
5142 }
5143
5144 pub fn text(&self, cx: &AppContext) -> String {
5145 self.buffer.read(cx).read(cx).text()
5146 }
5147
5148 pub fn set_text(&mut self, text: impl Into<String>, cx: &mut ViewContext<Self>) {
5149 self.buffer
5150 .read(cx)
5151 .as_singleton()
5152 .expect("you can only call set_text on editors for singleton buffers")
5153 .update(cx, |buffer, cx| buffer.set_text(text, cx));
5154 }
5155
5156 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
5157 self.display_map
5158 .update(cx, |map, cx| map.snapshot(cx))
5159 .text()
5160 }
5161
5162 pub fn soft_wrap_mode(&self, cx: &AppContext) -> SoftWrap {
5163 let language = self.language(cx);
5164 let settings = self.settings.borrow();
5165 let mode = self
5166 .soft_wrap_mode_override
5167 .unwrap_or_else(|| settings.soft_wrap(language));
5168 match mode {
5169 settings::SoftWrap::None => SoftWrap::None,
5170 settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
5171 settings::SoftWrap::PreferredLineLength => {
5172 SoftWrap::Column(settings.preferred_line_length(language))
5173 }
5174 }
5175 }
5176
5177 pub fn set_soft_wrap_mode(&mut self, mode: settings::SoftWrap, cx: &mut ViewContext<Self>) {
5178 self.soft_wrap_mode_override = Some(mode);
5179 cx.notify();
5180 }
5181
5182 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
5183 self.display_map
5184 .update(cx, |map, cx| map.set_wrap_width(width, cx))
5185 }
5186
5187 pub fn set_highlighted_rows(&mut self, rows: Option<Range<u32>>) {
5188 self.highlighted_rows = rows;
5189 }
5190
5191 pub fn highlighted_rows(&self) -> Option<Range<u32>> {
5192 self.highlighted_rows.clone()
5193 }
5194
5195 pub fn highlight_ranges<T: 'static>(
5196 &mut self,
5197 ranges: Vec<Range<Anchor>>,
5198 color: Color,
5199 cx: &mut ViewContext<Self>,
5200 ) {
5201 self.highlighted_ranges
5202 .insert(TypeId::of::<T>(), (color, ranges));
5203 cx.notify();
5204 }
5205
5206 pub fn clear_highlighted_ranges<T: 'static>(
5207 &mut self,
5208 cx: &mut ViewContext<Self>,
5209 ) -> Option<(Color, Vec<Range<Anchor>>)> {
5210 cx.notify();
5211 self.highlighted_ranges.remove(&TypeId::of::<T>())
5212 }
5213
5214 #[cfg(feature = "test-support")]
5215 pub fn all_highlighted_ranges(
5216 &mut self,
5217 cx: &mut ViewContext<Self>,
5218 ) -> Vec<(Range<DisplayPoint>, Color)> {
5219 let snapshot = self.snapshot(cx);
5220 let buffer = &snapshot.buffer_snapshot;
5221 let start = buffer.anchor_before(0);
5222 let end = buffer.anchor_after(buffer.len());
5223 self.highlighted_ranges_in_range(start..end, &snapshot)
5224 }
5225
5226 pub fn highlighted_ranges_for_type<T: 'static>(&self) -> Option<(Color, &[Range<Anchor>])> {
5227 self.highlighted_ranges
5228 .get(&TypeId::of::<T>())
5229 .map(|(color, ranges)| (*color, ranges.as_slice()))
5230 }
5231
5232 pub fn highlighted_ranges_in_range(
5233 &self,
5234 search_range: Range<Anchor>,
5235 display_snapshot: &DisplaySnapshot,
5236 ) -> Vec<(Range<DisplayPoint>, Color)> {
5237 let mut results = Vec::new();
5238 let buffer = &display_snapshot.buffer_snapshot;
5239 for (color, ranges) in self.highlighted_ranges.values() {
5240 let start_ix = match ranges.binary_search_by(|probe| {
5241 let cmp = probe.end.cmp(&search_range.start, &buffer).unwrap();
5242 if cmp.is_gt() {
5243 Ordering::Greater
5244 } else {
5245 Ordering::Less
5246 }
5247 }) {
5248 Ok(i) | Err(i) => i,
5249 };
5250 for range in &ranges[start_ix..] {
5251 if range.start.cmp(&search_range.end, &buffer).unwrap().is_ge() {
5252 break;
5253 }
5254 let start = range
5255 .start
5256 .to_point(buffer)
5257 .to_display_point(display_snapshot);
5258 let end = range
5259 .end
5260 .to_point(buffer)
5261 .to_display_point(display_snapshot);
5262 results.push((start..end, *color))
5263 }
5264 }
5265 results
5266 }
5267
5268 fn next_blink_epoch(&mut self) -> usize {
5269 self.blink_epoch += 1;
5270 self.blink_epoch
5271 }
5272
5273 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
5274 if !self.focused {
5275 return;
5276 }
5277
5278 self.show_local_cursors = true;
5279 cx.notify();
5280
5281 let epoch = self.next_blink_epoch();
5282 cx.spawn(|this, mut cx| {
5283 let this = this.downgrade();
5284 async move {
5285 Timer::after(CURSOR_BLINK_INTERVAL).await;
5286 if let Some(this) = this.upgrade(&cx) {
5287 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
5288 }
5289 }
5290 })
5291 .detach();
5292 }
5293
5294 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
5295 if epoch == self.blink_epoch {
5296 self.blinking_paused = false;
5297 self.blink_cursors(epoch, cx);
5298 }
5299 }
5300
5301 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
5302 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
5303 self.show_local_cursors = !self.show_local_cursors;
5304 cx.notify();
5305
5306 let epoch = self.next_blink_epoch();
5307 cx.spawn(|this, mut cx| {
5308 let this = this.downgrade();
5309 async move {
5310 Timer::after(CURSOR_BLINK_INTERVAL).await;
5311 if let Some(this) = this.upgrade(&cx) {
5312 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
5313 }
5314 }
5315 })
5316 .detach();
5317 }
5318 }
5319
5320 pub fn show_local_cursors(&self) -> bool {
5321 self.show_local_cursors
5322 }
5323
5324 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
5325 cx.notify();
5326 }
5327
5328 fn on_buffer_event(
5329 &mut self,
5330 _: ModelHandle<MultiBuffer>,
5331 event: &language::Event,
5332 cx: &mut ViewContext<Self>,
5333 ) {
5334 match event {
5335 language::Event::Edited => {
5336 self.refresh_active_diagnostics(cx);
5337 self.refresh_code_actions(cx);
5338 cx.emit(Event::Edited);
5339 }
5340 language::Event::Dirtied => cx.emit(Event::Dirtied),
5341 language::Event::Saved => cx.emit(Event::Saved),
5342 language::Event::FileHandleChanged => cx.emit(Event::TitleChanged),
5343 language::Event::Reloaded => cx.emit(Event::TitleChanged),
5344 language::Event::Closed => cx.emit(Event::Closed),
5345 language::Event::DiagnosticsUpdated => {
5346 self.refresh_active_diagnostics(cx);
5347 }
5348 _ => {}
5349 }
5350 }
5351
5352 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
5353 cx.notify();
5354 }
5355
5356 pub fn set_searchable(&mut self, searchable: bool) {
5357 self.searchable = searchable;
5358 }
5359
5360 pub fn searchable(&self) -> bool {
5361 self.searchable
5362 }
5363
5364 fn open_excerpts(workspace: &mut Workspace, _: &OpenExcerpts, cx: &mut ViewContext<Workspace>) {
5365 let active_item = workspace.active_item(cx);
5366 let editor_handle = if let Some(editor) = active_item
5367 .as_ref()
5368 .and_then(|item| item.act_as::<Self>(cx))
5369 {
5370 editor
5371 } else {
5372 cx.propagate_action();
5373 return;
5374 };
5375
5376 let editor = editor_handle.read(cx);
5377 let buffer = editor.buffer.read(cx);
5378 if buffer.is_singleton() {
5379 cx.propagate_action();
5380 return;
5381 }
5382
5383 let mut new_selections_by_buffer = HashMap::default();
5384 for selection in editor.local_selections::<usize>(cx) {
5385 for (buffer, mut range) in
5386 buffer.range_to_buffer_ranges(selection.start..selection.end, cx)
5387 {
5388 if selection.reversed {
5389 mem::swap(&mut range.start, &mut range.end);
5390 }
5391 new_selections_by_buffer
5392 .entry(buffer)
5393 .or_insert(Vec::new())
5394 .push(range)
5395 }
5396 }
5397
5398 editor_handle.update(cx, |editor, cx| {
5399 editor.push_to_nav_history(editor.newest_anchor_selection().head(), None, cx);
5400 });
5401 let nav_history = workspace.active_pane().read(cx).nav_history().clone();
5402 nav_history.borrow_mut().disable();
5403
5404 // We defer the pane interaction because we ourselves are a workspace item
5405 // and activating a new item causes the pane to call a method on us reentrantly,
5406 // which panics if we're on the stack.
5407 cx.defer(move |workspace, cx| {
5408 for (ix, (buffer, ranges)) in new_selections_by_buffer.into_iter().enumerate() {
5409 let buffer = BufferItemHandle(buffer);
5410 if ix == 0 && !workspace.activate_pane_for_item(&buffer, cx) {
5411 workspace.activate_next_pane(cx);
5412 }
5413
5414 let editor = workspace
5415 .open_item(buffer, cx)
5416 .downcast::<Editor>()
5417 .unwrap();
5418
5419 editor.update(cx, |editor, cx| {
5420 editor.select_ranges(ranges, Some(Autoscroll::Newest), cx);
5421 });
5422 }
5423
5424 nav_history.borrow_mut().enable();
5425 });
5426 }
5427}
5428
5429impl EditorSnapshot {
5430 pub fn is_focused(&self) -> bool {
5431 self.is_focused
5432 }
5433
5434 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
5435 self.placeholder_text.as_ref()
5436 }
5437
5438 pub fn scroll_position(&self) -> Vector2F {
5439 compute_scroll_position(
5440 &self.display_snapshot,
5441 self.scroll_position,
5442 &self.scroll_top_anchor,
5443 )
5444 }
5445}
5446
5447impl Deref for EditorSnapshot {
5448 type Target = DisplaySnapshot;
5449
5450 fn deref(&self) -> &Self::Target {
5451 &self.display_snapshot
5452 }
5453}
5454
5455fn compute_scroll_position(
5456 snapshot: &DisplaySnapshot,
5457 mut scroll_position: Vector2F,
5458 scroll_top_anchor: &Option<Anchor>,
5459) -> Vector2F {
5460 if let Some(anchor) = scroll_top_anchor {
5461 let scroll_top = anchor.to_display_point(snapshot).row() as f32;
5462 scroll_position.set_y(scroll_top + scroll_position.y());
5463 } else {
5464 scroll_position.set_y(0.);
5465 }
5466 scroll_position
5467}
5468
5469#[derive(Copy, Clone)]
5470pub enum Event {
5471 Activate,
5472 Edited,
5473 Blurred,
5474 Dirtied,
5475 Saved,
5476 TitleChanged,
5477 SelectionsChanged,
5478 Closed,
5479}
5480
5481impl Entity for Editor {
5482 type Event = Event;
5483}
5484
5485impl View for Editor {
5486 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
5487 let style = self.style(cx);
5488 self.display_map.update(cx, |map, cx| {
5489 map.set_font(style.text.font_id, style.text.font_size, cx)
5490 });
5491 EditorElement::new(self.handle.clone(), style.clone()).boxed()
5492 }
5493
5494 fn ui_name() -> &'static str {
5495 "Editor"
5496 }
5497
5498 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
5499 self.focused = true;
5500 self.blink_cursors(self.blink_epoch, cx);
5501 self.buffer.update(cx, |buffer, cx| {
5502 buffer.finalize_last_transaction(cx);
5503 buffer.set_active_selections(&self.selections, cx)
5504 });
5505 }
5506
5507 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
5508 self.focused = false;
5509 self.show_local_cursors = false;
5510 self.buffer
5511 .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
5512 self.hide_context_menu(cx);
5513 cx.emit(Event::Blurred);
5514 cx.notify();
5515 }
5516
5517 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
5518 let mut cx = Self::default_keymap_context();
5519 let mode = match self.mode {
5520 EditorMode::SingleLine => "single_line",
5521 EditorMode::AutoHeight { .. } => "auto_height",
5522 EditorMode::Full => "full",
5523 };
5524 cx.map.insert("mode".into(), mode.into());
5525 if self.pending_rename.is_some() {
5526 cx.set.insert("renaming".into());
5527 }
5528 match self.context_menu.as_ref() {
5529 Some(ContextMenu::Completions(_)) => {
5530 cx.set.insert("showing_completions".into());
5531 }
5532 Some(ContextMenu::CodeActions(_)) => {
5533 cx.set.insert("showing_code_actions".into());
5534 }
5535 None => {}
5536 }
5537 cx
5538 }
5539}
5540
5541fn build_style(
5542 settings: &Settings,
5543 get_field_editor_theme: Option<GetFieldEditorTheme>,
5544 cx: &AppContext,
5545) -> EditorStyle {
5546 let mut theme = settings.theme.editor.clone();
5547 if let Some(get_field_editor_theme) = get_field_editor_theme {
5548 let field_editor_theme = get_field_editor_theme(&settings.theme);
5549 if let Some(background) = field_editor_theme.container.background_color {
5550 theme.background = background;
5551 }
5552 theme.text_color = field_editor_theme.text.color;
5553 theme.selection = field_editor_theme.selection;
5554 EditorStyle {
5555 text: field_editor_theme.text,
5556 placeholder_text: field_editor_theme.placeholder_text,
5557 theme,
5558 }
5559 } else {
5560 let font_cache = cx.font_cache();
5561 let font_family_id = settings.buffer_font_family;
5562 let font_family_name = cx.font_cache().family_name(font_family_id).unwrap();
5563 let font_properties = Default::default();
5564 let font_id = font_cache
5565 .select_font(font_family_id, &font_properties)
5566 .unwrap();
5567 let font_size = settings.buffer_font_size;
5568 EditorStyle {
5569 text: TextStyle {
5570 color: settings.theme.editor.text_color,
5571 font_family_name,
5572 font_family_id,
5573 font_id,
5574 font_size,
5575 font_properties,
5576 underline: None,
5577 },
5578 placeholder_text: None,
5579 theme,
5580 }
5581 }
5582}
5583
5584impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
5585 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
5586 let start = self.start.to_point(buffer);
5587 let end = self.end.to_point(buffer);
5588 if self.reversed {
5589 end..start
5590 } else {
5591 start..end
5592 }
5593 }
5594
5595 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
5596 let start = self.start.to_offset(buffer);
5597 let end = self.end.to_offset(buffer);
5598 if self.reversed {
5599 end..start
5600 } else {
5601 start..end
5602 }
5603 }
5604
5605 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
5606 let start = self
5607 .start
5608 .to_point(&map.buffer_snapshot)
5609 .to_display_point(map);
5610 let end = self
5611 .end
5612 .to_point(&map.buffer_snapshot)
5613 .to_display_point(map);
5614 if self.reversed {
5615 end..start
5616 } else {
5617 start..end
5618 }
5619 }
5620
5621 fn spanned_rows(
5622 &self,
5623 include_end_if_at_line_start: bool,
5624 map: &DisplaySnapshot,
5625 ) -> Range<u32> {
5626 let start = self.start.to_point(&map.buffer_snapshot);
5627 let mut end = self.end.to_point(&map.buffer_snapshot);
5628 if !include_end_if_at_line_start && start.row != end.row && end.column == 0 {
5629 end.row -= 1;
5630 }
5631
5632 let buffer_start = map.prev_line_boundary(start).0;
5633 let buffer_end = map.next_line_boundary(end).0;
5634 buffer_start.row..buffer_end.row + 1
5635 }
5636}
5637
5638impl<T: InvalidationRegion> InvalidationStack<T> {
5639 fn invalidate<S>(&mut self, selections: &[Selection<S>], buffer: &MultiBufferSnapshot)
5640 where
5641 S: Clone + ToOffset,
5642 {
5643 while let Some(region) = self.last() {
5644 let all_selections_inside_invalidation_ranges =
5645 if selections.len() == region.ranges().len() {
5646 selections
5647 .iter()
5648 .zip(region.ranges().iter().map(|r| r.to_offset(&buffer)))
5649 .all(|(selection, invalidation_range)| {
5650 let head = selection.head().to_offset(&buffer);
5651 invalidation_range.start <= head && invalidation_range.end >= head
5652 })
5653 } else {
5654 false
5655 };
5656
5657 if all_selections_inside_invalidation_ranges {
5658 break;
5659 } else {
5660 self.pop();
5661 }
5662 }
5663 }
5664}
5665
5666impl<T> Default for InvalidationStack<T> {
5667 fn default() -> Self {
5668 Self(Default::default())
5669 }
5670}
5671
5672impl<T> Deref for InvalidationStack<T> {
5673 type Target = Vec<T>;
5674
5675 fn deref(&self) -> &Self::Target {
5676 &self.0
5677 }
5678}
5679
5680impl<T> DerefMut for InvalidationStack<T> {
5681 fn deref_mut(&mut self) -> &mut Self::Target {
5682 &mut self.0
5683 }
5684}
5685
5686impl InvalidationRegion for BracketPairState {
5687 fn ranges(&self) -> &[Range<Anchor>] {
5688 &self.ranges
5689 }
5690}
5691
5692impl InvalidationRegion for SnippetState {
5693 fn ranges(&self) -> &[Range<Anchor>] {
5694 &self.ranges[self.active_index]
5695 }
5696}
5697
5698impl Deref for EditorStyle {
5699 type Target = theme::Editor;
5700
5701 fn deref(&self) -> &Self::Target {
5702 &self.theme
5703 }
5704}
5705
5706pub fn diagnostic_block_renderer(
5707 diagnostic: Diagnostic,
5708 is_valid: bool,
5709 settings: watch::Receiver<Settings>,
5710) -> RenderBlock {
5711 let mut highlighted_lines = Vec::new();
5712 for line in diagnostic.message.lines() {
5713 highlighted_lines.push(highlight_diagnostic_message(line));
5714 }
5715
5716 Arc::new(move |cx: &BlockContext| {
5717 let settings = settings.borrow();
5718 let theme = &settings.theme.editor;
5719 let style = diagnostic_style(diagnostic.severity, is_valid, theme);
5720 let font_size = (style.text_scale_factor * settings.buffer_font_size).round();
5721 Flex::column()
5722 .with_children(highlighted_lines.iter().map(|(line, highlights)| {
5723 Label::new(
5724 line.clone(),
5725 style.message.clone().with_font_size(font_size),
5726 )
5727 .with_highlights(highlights.clone())
5728 .contained()
5729 .with_margin_left(cx.anchor_x)
5730 .boxed()
5731 }))
5732 .aligned()
5733 .left()
5734 .boxed()
5735 })
5736}
5737
5738pub fn highlight_diagnostic_message(message: &str) -> (String, Vec<usize>) {
5739 let mut message_without_backticks = String::new();
5740 let mut prev_offset = 0;
5741 let mut inside_block = false;
5742 let mut highlights = Vec::new();
5743 for (match_ix, (offset, _)) in message
5744 .match_indices('`')
5745 .chain([(message.len(), "")])
5746 .enumerate()
5747 {
5748 message_without_backticks.push_str(&message[prev_offset..offset]);
5749 if inside_block {
5750 highlights.extend(prev_offset - match_ix..offset - match_ix);
5751 }
5752
5753 inside_block = !inside_block;
5754 prev_offset = offset + 1;
5755 }
5756
5757 (message_without_backticks, highlights)
5758}
5759
5760pub fn diagnostic_style(
5761 severity: DiagnosticSeverity,
5762 valid: bool,
5763 theme: &theme::Editor,
5764) -> DiagnosticStyle {
5765 match (severity, valid) {
5766 (DiagnosticSeverity::ERROR, true) => theme.error_diagnostic.clone(),
5767 (DiagnosticSeverity::ERROR, false) => theme.invalid_error_diagnostic.clone(),
5768 (DiagnosticSeverity::WARNING, true) => theme.warning_diagnostic.clone(),
5769 (DiagnosticSeverity::WARNING, false) => theme.invalid_warning_diagnostic.clone(),
5770 (DiagnosticSeverity::INFORMATION, true) => theme.information_diagnostic.clone(),
5771 (DiagnosticSeverity::INFORMATION, false) => theme.invalid_information_diagnostic.clone(),
5772 (DiagnosticSeverity::HINT, true) => theme.hint_diagnostic.clone(),
5773 (DiagnosticSeverity::HINT, false) => theme.invalid_hint_diagnostic.clone(),
5774 _ => theme.invalid_hint_diagnostic.clone(),
5775 }
5776}
5777
5778pub fn combine_syntax_and_fuzzy_match_highlights(
5779 text: &str,
5780 default_style: HighlightStyle,
5781 syntax_ranges: impl Iterator<Item = (Range<usize>, HighlightStyle)>,
5782 match_indices: &[usize],
5783) -> Vec<(Range<usize>, HighlightStyle)> {
5784 let mut result = Vec::new();
5785 let mut match_indices = match_indices.iter().copied().peekable();
5786
5787 for (range, mut syntax_highlight) in syntax_ranges.chain([(usize::MAX..0, Default::default())])
5788 {
5789 syntax_highlight.font_properties.weight(Default::default());
5790
5791 // Add highlights for any fuzzy match characters before the next
5792 // syntax highlight range.
5793 while let Some(&match_index) = match_indices.peek() {
5794 if match_index >= range.start {
5795 break;
5796 }
5797 match_indices.next();
5798 let end_index = char_ix_after(match_index, text);
5799 let mut match_style = default_style;
5800 match_style.font_properties.weight(fonts::Weight::BOLD);
5801 result.push((match_index..end_index, match_style));
5802 }
5803
5804 if range.start == usize::MAX {
5805 break;
5806 }
5807
5808 // Add highlights for any fuzzy match characters within the
5809 // syntax highlight range.
5810 let mut offset = range.start;
5811 while let Some(&match_index) = match_indices.peek() {
5812 if match_index >= range.end {
5813 break;
5814 }
5815
5816 match_indices.next();
5817 if match_index > offset {
5818 result.push((offset..match_index, syntax_highlight));
5819 }
5820
5821 let mut end_index = char_ix_after(match_index, text);
5822 while let Some(&next_match_index) = match_indices.peek() {
5823 if next_match_index == end_index && next_match_index < range.end {
5824 end_index = char_ix_after(next_match_index, text);
5825 match_indices.next();
5826 } else {
5827 break;
5828 }
5829 }
5830
5831 let mut match_style = syntax_highlight;
5832 match_style.font_properties.weight(fonts::Weight::BOLD);
5833 result.push((match_index..end_index, match_style));
5834 offset = end_index;
5835 }
5836
5837 if offset < range.end {
5838 result.push((offset..range.end, syntax_highlight));
5839 }
5840 }
5841
5842 fn char_ix_after(ix: usize, text: &str) -> usize {
5843 ix + text[ix..].chars().next().unwrap().len_utf8()
5844 }
5845
5846 result
5847}
5848
5849pub fn styled_runs_for_code_label<'a>(
5850 label: &'a CodeLabel,
5851 default_color: Color,
5852 syntax_theme: &'a theme::SyntaxTheme,
5853) -> impl 'a + Iterator<Item = (Range<usize>, HighlightStyle)> {
5854 const MUTED_OPACITY: usize = 165;
5855
5856 let mut muted_default_style = HighlightStyle {
5857 color: default_color,
5858 ..Default::default()
5859 };
5860 muted_default_style.color.a = ((default_color.a as usize * MUTED_OPACITY) / 255) as u8;
5861
5862 let mut prev_end = label.filter_range.end;
5863 label
5864 .runs
5865 .iter()
5866 .enumerate()
5867 .flat_map(move |(ix, (range, highlight_id))| {
5868 let style = if let Some(style) = highlight_id.style(syntax_theme) {
5869 style
5870 } else {
5871 return Default::default();
5872 };
5873 let mut muted_style = style.clone();
5874 muted_style.color.a = ((style.color.a as usize * MUTED_OPACITY) / 255) as u8;
5875
5876 let mut runs = SmallVec::<[(Range<usize>, HighlightStyle); 3]>::new();
5877 if range.start >= label.filter_range.end {
5878 if range.start > prev_end {
5879 runs.push((prev_end..range.start, muted_default_style));
5880 }
5881 runs.push((range.clone(), muted_style));
5882 } else if range.end <= label.filter_range.end {
5883 runs.push((range.clone(), style));
5884 } else {
5885 runs.push((range.start..label.filter_range.end, style));
5886 runs.push((label.filter_range.end..range.end, muted_style));
5887 }
5888 prev_end = cmp::max(prev_end, range.end);
5889
5890 if ix + 1 == label.runs.len() && label.text.len() > prev_end {
5891 runs.push((prev_end..label.text.len(), muted_default_style));
5892 }
5893
5894 runs
5895 })
5896}
5897
5898#[cfg(test)]
5899mod tests {
5900 use super::*;
5901 use language::LanguageConfig;
5902 use lsp::FakeLanguageServer;
5903 use project::{FakeFs, ProjectPath};
5904 use smol::stream::StreamExt;
5905 use std::{cell::RefCell, rc::Rc, time::Instant};
5906 use text::Point;
5907 use unindent::Unindent;
5908 use util::test::sample_text;
5909
5910 #[gpui::test]
5911 fn test_undo_redo_with_selection_restoration(cx: &mut MutableAppContext) {
5912 let mut now = Instant::now();
5913 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
5914 let group_interval = buffer.read(cx).transaction_group_interval();
5915 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5916 let settings = Settings::test(cx);
5917 let (_, editor) = cx.add_window(Default::default(), |cx| {
5918 build_editor(buffer.clone(), settings, cx)
5919 });
5920
5921 editor.update(cx, |editor, cx| {
5922 editor.start_transaction_at(now, cx);
5923 editor.select_ranges([2..4], None, cx);
5924 editor.insert("cd", cx);
5925 editor.end_transaction_at(now, cx);
5926 assert_eq!(editor.text(cx), "12cd56");
5927 assert_eq!(editor.selected_ranges(cx), vec![4..4]);
5928
5929 editor.start_transaction_at(now, cx);
5930 editor.select_ranges([4..5], None, cx);
5931 editor.insert("e", cx);
5932 editor.end_transaction_at(now, cx);
5933 assert_eq!(editor.text(cx), "12cde6");
5934 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
5935
5936 now += group_interval + Duration::from_millis(1);
5937 editor.select_ranges([2..2], None, cx);
5938
5939 // Simulate an edit in another editor
5940 buffer.update(cx, |buffer, cx| {
5941 buffer.start_transaction_at(now, cx);
5942 buffer.edit([0..1], "a", cx);
5943 buffer.edit([1..1], "b", cx);
5944 buffer.end_transaction_at(now, cx);
5945 });
5946
5947 assert_eq!(editor.text(cx), "ab2cde6");
5948 assert_eq!(editor.selected_ranges(cx), vec![3..3]);
5949
5950 // Last transaction happened past the group interval in a different editor.
5951 // Undo it individually and don't restore selections.
5952 editor.undo(&Undo, cx);
5953 assert_eq!(editor.text(cx), "12cde6");
5954 assert_eq!(editor.selected_ranges(cx), vec![2..2]);
5955
5956 // First two transactions happened within the group interval in this editor.
5957 // Undo them together and restore selections.
5958 editor.undo(&Undo, cx);
5959 editor.undo(&Undo, cx); // Undo stack is empty here, so this is a no-op.
5960 assert_eq!(editor.text(cx), "123456");
5961 assert_eq!(editor.selected_ranges(cx), vec![0..0]);
5962
5963 // Redo the first two transactions together.
5964 editor.redo(&Redo, cx);
5965 assert_eq!(editor.text(cx), "12cde6");
5966 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
5967
5968 // Redo the last transaction on its own.
5969 editor.redo(&Redo, cx);
5970 assert_eq!(editor.text(cx), "ab2cde6");
5971 assert_eq!(editor.selected_ranges(cx), vec![6..6]);
5972
5973 // Test empty transactions.
5974 editor.start_transaction_at(now, cx);
5975 editor.end_transaction_at(now, cx);
5976 editor.undo(&Undo, cx);
5977 assert_eq!(editor.text(cx), "12cde6");
5978 });
5979 }
5980
5981 #[gpui::test]
5982 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
5983 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
5984 let settings = Settings::test(cx);
5985 let (_, editor) =
5986 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5987
5988 editor.update(cx, |view, cx| {
5989 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
5990 });
5991
5992 assert_eq!(
5993 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5994 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
5995 );
5996
5997 editor.update(cx, |view, cx| {
5998 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
5999 });
6000
6001 assert_eq!(
6002 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6003 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6004 );
6005
6006 editor.update(cx, |view, cx| {
6007 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6008 });
6009
6010 assert_eq!(
6011 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6012 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
6013 );
6014
6015 editor.update(cx, |view, cx| {
6016 view.end_selection(cx);
6017 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6018 });
6019
6020 assert_eq!(
6021 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6022 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
6023 );
6024
6025 editor.update(cx, |view, cx| {
6026 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
6027 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
6028 });
6029
6030 assert_eq!(
6031 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6032 [
6033 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
6034 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
6035 ]
6036 );
6037
6038 editor.update(cx, |view, cx| {
6039 view.end_selection(cx);
6040 });
6041
6042 assert_eq!(
6043 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6044 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
6045 );
6046 }
6047
6048 #[gpui::test]
6049 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
6050 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6051 let settings = Settings::test(cx);
6052 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6053
6054 view.update(cx, |view, cx| {
6055 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
6056 assert_eq!(
6057 view.selected_display_ranges(cx),
6058 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
6059 );
6060 });
6061
6062 view.update(cx, |view, cx| {
6063 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6064 assert_eq!(
6065 view.selected_display_ranges(cx),
6066 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6067 );
6068 });
6069
6070 view.update(cx, |view, cx| {
6071 view.cancel(&Cancel, cx);
6072 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6073 assert_eq!(
6074 view.selected_display_ranges(cx),
6075 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6076 );
6077 });
6078 }
6079
6080 #[gpui::test]
6081 fn test_navigation_history(cx: &mut gpui::MutableAppContext) {
6082 cx.add_window(Default::default(), |cx| {
6083 use workspace::ItemView;
6084 let nav_history = Rc::new(RefCell::new(workspace::NavHistory::default()));
6085 let settings = Settings::test(&cx);
6086 let buffer = MultiBuffer::build_simple(&sample_text(30, 5, 'a'), cx);
6087 let mut editor = build_editor(buffer.clone(), settings, cx);
6088 editor.nav_history = Some(ItemNavHistory::new(nav_history.clone(), &cx.handle()));
6089
6090 // Move the cursor a small distance.
6091 // Nothing is added to the navigation history.
6092 editor.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
6093 editor.select_display_ranges(&[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)], cx);
6094 assert!(nav_history.borrow_mut().pop_backward().is_none());
6095
6096 // Move the cursor a large distance.
6097 // The history can jump back to the previous position.
6098 editor.select_display_ranges(&[DisplayPoint::new(13, 0)..DisplayPoint::new(13, 3)], cx);
6099 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
6100 editor.navigate(nav_entry.data.unwrap(), cx);
6101 assert_eq!(nav_entry.item_view.id(), cx.view_id());
6102 assert_eq!(
6103 editor.selected_display_ranges(cx),
6104 &[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)]
6105 );
6106
6107 // Move the cursor a small distance via the mouse.
6108 // Nothing is added to the navigation history.
6109 editor.begin_selection(DisplayPoint::new(5, 0), false, 1, cx);
6110 editor.end_selection(cx);
6111 assert_eq!(
6112 editor.selected_display_ranges(cx),
6113 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
6114 );
6115 assert!(nav_history.borrow_mut().pop_backward().is_none());
6116
6117 // Move the cursor a large distance via the mouse.
6118 // The history can jump back to the previous position.
6119 editor.begin_selection(DisplayPoint::new(15, 0), false, 1, cx);
6120 editor.end_selection(cx);
6121 assert_eq!(
6122 editor.selected_display_ranges(cx),
6123 &[DisplayPoint::new(15, 0)..DisplayPoint::new(15, 0)]
6124 );
6125 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
6126 editor.navigate(nav_entry.data.unwrap(), cx);
6127 assert_eq!(nav_entry.item_view.id(), cx.view_id());
6128 assert_eq!(
6129 editor.selected_display_ranges(cx),
6130 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
6131 );
6132
6133 editor
6134 });
6135 }
6136
6137 #[gpui::test]
6138 fn test_cancel(cx: &mut gpui::MutableAppContext) {
6139 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6140 let settings = Settings::test(cx);
6141 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6142
6143 view.update(cx, |view, cx| {
6144 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
6145 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6146 view.end_selection(cx);
6147
6148 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
6149 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
6150 view.end_selection(cx);
6151 assert_eq!(
6152 view.selected_display_ranges(cx),
6153 [
6154 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
6155 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
6156 ]
6157 );
6158 });
6159
6160 view.update(cx, |view, cx| {
6161 view.cancel(&Cancel, cx);
6162 assert_eq!(
6163 view.selected_display_ranges(cx),
6164 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
6165 );
6166 });
6167
6168 view.update(cx, |view, cx| {
6169 view.cancel(&Cancel, cx);
6170 assert_eq!(
6171 view.selected_display_ranges(cx),
6172 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
6173 );
6174 });
6175 }
6176
6177 #[gpui::test]
6178 fn test_fold(cx: &mut gpui::MutableAppContext) {
6179 let buffer = MultiBuffer::build_simple(
6180 &"
6181 impl Foo {
6182 // Hello!
6183
6184 fn a() {
6185 1
6186 }
6187
6188 fn b() {
6189 2
6190 }
6191
6192 fn c() {
6193 3
6194 }
6195 }
6196 "
6197 .unindent(),
6198 cx,
6199 );
6200 let settings = Settings::test(&cx);
6201 let (_, view) = cx.add_window(Default::default(), |cx| {
6202 build_editor(buffer.clone(), settings, cx)
6203 });
6204
6205 view.update(cx, |view, cx| {
6206 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx);
6207 view.fold(&Fold, cx);
6208 assert_eq!(
6209 view.display_text(cx),
6210 "
6211 impl Foo {
6212 // Hello!
6213
6214 fn a() {
6215 1
6216 }
6217
6218 fn b() {…
6219 }
6220
6221 fn c() {…
6222 }
6223 }
6224 "
6225 .unindent(),
6226 );
6227
6228 view.fold(&Fold, cx);
6229 assert_eq!(
6230 view.display_text(cx),
6231 "
6232 impl Foo {…
6233 }
6234 "
6235 .unindent(),
6236 );
6237
6238 view.unfold(&Unfold, cx);
6239 assert_eq!(
6240 view.display_text(cx),
6241 "
6242 impl Foo {
6243 // Hello!
6244
6245 fn a() {
6246 1
6247 }
6248
6249 fn b() {…
6250 }
6251
6252 fn c() {…
6253 }
6254 }
6255 "
6256 .unindent(),
6257 );
6258
6259 view.unfold(&Unfold, cx);
6260 assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text());
6261 });
6262 }
6263
6264 #[gpui::test]
6265 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
6266 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
6267 let settings = Settings::test(&cx);
6268 let (_, view) = cx.add_window(Default::default(), |cx| {
6269 build_editor(buffer.clone(), settings, cx)
6270 });
6271
6272 buffer.update(cx, |buffer, cx| {
6273 buffer.edit(
6274 vec![
6275 Point::new(1, 0)..Point::new(1, 0),
6276 Point::new(1, 1)..Point::new(1, 1),
6277 ],
6278 "\t",
6279 cx,
6280 );
6281 });
6282
6283 view.update(cx, |view, cx| {
6284 assert_eq!(
6285 view.selected_display_ranges(cx),
6286 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6287 );
6288
6289 view.move_down(&MoveDown, cx);
6290 assert_eq!(
6291 view.selected_display_ranges(cx),
6292 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6293 );
6294
6295 view.move_right(&MoveRight, cx);
6296 assert_eq!(
6297 view.selected_display_ranges(cx),
6298 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
6299 );
6300
6301 view.move_left(&MoveLeft, cx);
6302 assert_eq!(
6303 view.selected_display_ranges(cx),
6304 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6305 );
6306
6307 view.move_up(&MoveUp, cx);
6308 assert_eq!(
6309 view.selected_display_ranges(cx),
6310 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6311 );
6312
6313 view.move_to_end(&MoveToEnd, cx);
6314 assert_eq!(
6315 view.selected_display_ranges(cx),
6316 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
6317 );
6318
6319 view.move_to_beginning(&MoveToBeginning, cx);
6320 assert_eq!(
6321 view.selected_display_ranges(cx),
6322 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6323 );
6324
6325 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx);
6326 view.select_to_beginning(&SelectToBeginning, cx);
6327 assert_eq!(
6328 view.selected_display_ranges(cx),
6329 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
6330 );
6331
6332 view.select_to_end(&SelectToEnd, cx);
6333 assert_eq!(
6334 view.selected_display_ranges(cx),
6335 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
6336 );
6337 });
6338 }
6339
6340 #[gpui::test]
6341 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
6342 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
6343 let settings = Settings::test(&cx);
6344 let (_, view) = cx.add_window(Default::default(), |cx| {
6345 build_editor(buffer.clone(), settings, cx)
6346 });
6347
6348 assert_eq!('ⓐ'.len_utf8(), 3);
6349 assert_eq!('α'.len_utf8(), 2);
6350
6351 view.update(cx, |view, cx| {
6352 view.fold_ranges(
6353 vec![
6354 Point::new(0, 6)..Point::new(0, 12),
6355 Point::new(1, 2)..Point::new(1, 4),
6356 Point::new(2, 4)..Point::new(2, 8),
6357 ],
6358 cx,
6359 );
6360 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
6361
6362 view.move_right(&MoveRight, cx);
6363 assert_eq!(
6364 view.selected_display_ranges(cx),
6365 &[empty_range(0, "ⓐ".len())]
6366 );
6367 view.move_right(&MoveRight, cx);
6368 assert_eq!(
6369 view.selected_display_ranges(cx),
6370 &[empty_range(0, "ⓐⓑ".len())]
6371 );
6372 view.move_right(&MoveRight, cx);
6373 assert_eq!(
6374 view.selected_display_ranges(cx),
6375 &[empty_range(0, "ⓐⓑ…".len())]
6376 );
6377
6378 view.move_down(&MoveDown, cx);
6379 assert_eq!(
6380 view.selected_display_ranges(cx),
6381 &[empty_range(1, "ab…".len())]
6382 );
6383 view.move_left(&MoveLeft, cx);
6384 assert_eq!(
6385 view.selected_display_ranges(cx),
6386 &[empty_range(1, "ab".len())]
6387 );
6388 view.move_left(&MoveLeft, cx);
6389 assert_eq!(
6390 view.selected_display_ranges(cx),
6391 &[empty_range(1, "a".len())]
6392 );
6393
6394 view.move_down(&MoveDown, cx);
6395 assert_eq!(
6396 view.selected_display_ranges(cx),
6397 &[empty_range(2, "α".len())]
6398 );
6399 view.move_right(&MoveRight, cx);
6400 assert_eq!(
6401 view.selected_display_ranges(cx),
6402 &[empty_range(2, "αβ".len())]
6403 );
6404 view.move_right(&MoveRight, cx);
6405 assert_eq!(
6406 view.selected_display_ranges(cx),
6407 &[empty_range(2, "αβ…".len())]
6408 );
6409 view.move_right(&MoveRight, cx);
6410 assert_eq!(
6411 view.selected_display_ranges(cx),
6412 &[empty_range(2, "αβ…ε".len())]
6413 );
6414
6415 view.move_up(&MoveUp, cx);
6416 assert_eq!(
6417 view.selected_display_ranges(cx),
6418 &[empty_range(1, "ab…e".len())]
6419 );
6420 view.move_up(&MoveUp, cx);
6421 assert_eq!(
6422 view.selected_display_ranges(cx),
6423 &[empty_range(0, "ⓐⓑ…ⓔ".len())]
6424 );
6425 view.move_left(&MoveLeft, cx);
6426 assert_eq!(
6427 view.selected_display_ranges(cx),
6428 &[empty_range(0, "ⓐⓑ…".len())]
6429 );
6430 view.move_left(&MoveLeft, cx);
6431 assert_eq!(
6432 view.selected_display_ranges(cx),
6433 &[empty_range(0, "ⓐⓑ".len())]
6434 );
6435 view.move_left(&MoveLeft, cx);
6436 assert_eq!(
6437 view.selected_display_ranges(cx),
6438 &[empty_range(0, "ⓐ".len())]
6439 );
6440 });
6441 }
6442
6443 #[gpui::test]
6444 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
6445 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
6446 let settings = Settings::test(&cx);
6447 let (_, view) = cx.add_window(Default::default(), |cx| {
6448 build_editor(buffer.clone(), settings, cx)
6449 });
6450 view.update(cx, |view, cx| {
6451 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx);
6452 view.move_down(&MoveDown, cx);
6453 assert_eq!(
6454 view.selected_display_ranges(cx),
6455 &[empty_range(1, "abcd".len())]
6456 );
6457
6458 view.move_down(&MoveDown, cx);
6459 assert_eq!(
6460 view.selected_display_ranges(cx),
6461 &[empty_range(2, "αβγ".len())]
6462 );
6463
6464 view.move_down(&MoveDown, cx);
6465 assert_eq!(
6466 view.selected_display_ranges(cx),
6467 &[empty_range(3, "abcd".len())]
6468 );
6469
6470 view.move_down(&MoveDown, cx);
6471 assert_eq!(
6472 view.selected_display_ranges(cx),
6473 &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
6474 );
6475
6476 view.move_up(&MoveUp, cx);
6477 assert_eq!(
6478 view.selected_display_ranges(cx),
6479 &[empty_range(3, "abcd".len())]
6480 );
6481
6482 view.move_up(&MoveUp, cx);
6483 assert_eq!(
6484 view.selected_display_ranges(cx),
6485 &[empty_range(2, "αβγ".len())]
6486 );
6487 });
6488 }
6489
6490 #[gpui::test]
6491 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
6492 let buffer = MultiBuffer::build_simple("abc\n def", cx);
6493 let settings = Settings::test(&cx);
6494 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6495 view.update(cx, |view, cx| {
6496 view.select_display_ranges(
6497 &[
6498 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6499 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
6500 ],
6501 cx,
6502 );
6503 });
6504
6505 view.update(cx, |view, cx| {
6506 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6507 assert_eq!(
6508 view.selected_display_ranges(cx),
6509 &[
6510 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6511 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6512 ]
6513 );
6514 });
6515
6516 view.update(cx, |view, cx| {
6517 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6518 assert_eq!(
6519 view.selected_display_ranges(cx),
6520 &[
6521 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6522 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6523 ]
6524 );
6525 });
6526
6527 view.update(cx, |view, cx| {
6528 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6529 assert_eq!(
6530 view.selected_display_ranges(cx),
6531 &[
6532 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6533 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6534 ]
6535 );
6536 });
6537
6538 view.update(cx, |view, cx| {
6539 view.move_to_end_of_line(&MoveToEndOfLine, cx);
6540 assert_eq!(
6541 view.selected_display_ranges(cx),
6542 &[
6543 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6544 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6545 ]
6546 );
6547 });
6548
6549 // Moving to the end of line again is a no-op.
6550 view.update(cx, |view, cx| {
6551 view.move_to_end_of_line(&MoveToEndOfLine, cx);
6552 assert_eq!(
6553 view.selected_display_ranges(cx),
6554 &[
6555 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6556 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6557 ]
6558 );
6559 });
6560
6561 view.update(cx, |view, cx| {
6562 view.move_left(&MoveLeft, cx);
6563 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6564 assert_eq!(
6565 view.selected_display_ranges(cx),
6566 &[
6567 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6568 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
6569 ]
6570 );
6571 });
6572
6573 view.update(cx, |view, cx| {
6574 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6575 assert_eq!(
6576 view.selected_display_ranges(cx),
6577 &[
6578 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6579 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
6580 ]
6581 );
6582 });
6583
6584 view.update(cx, |view, cx| {
6585 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6586 assert_eq!(
6587 view.selected_display_ranges(cx),
6588 &[
6589 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6590 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
6591 ]
6592 );
6593 });
6594
6595 view.update(cx, |view, cx| {
6596 view.select_to_end_of_line(&SelectToEndOfLine(true), cx);
6597 assert_eq!(
6598 view.selected_display_ranges(cx),
6599 &[
6600 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
6601 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
6602 ]
6603 );
6604 });
6605
6606 view.update(cx, |view, cx| {
6607 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
6608 assert_eq!(view.display_text(cx), "ab\n de");
6609 assert_eq!(
6610 view.selected_display_ranges(cx),
6611 &[
6612 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6613 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
6614 ]
6615 );
6616 });
6617
6618 view.update(cx, |view, cx| {
6619 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
6620 assert_eq!(view.display_text(cx), "\n");
6621 assert_eq!(
6622 view.selected_display_ranges(cx),
6623 &[
6624 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6625 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6626 ]
6627 );
6628 });
6629 }
6630
6631 #[gpui::test]
6632 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
6633 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
6634 let settings = Settings::test(&cx);
6635 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6636 view.update(cx, |view, cx| {
6637 view.select_display_ranges(
6638 &[
6639 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
6640 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
6641 ],
6642 cx,
6643 );
6644 });
6645
6646 view.update(cx, |view, cx| {
6647 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6648 assert_eq!(
6649 view.selected_display_ranges(cx),
6650 &[
6651 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
6652 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
6653 ]
6654 );
6655 });
6656
6657 view.update(cx, |view, cx| {
6658 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6659 assert_eq!(
6660 view.selected_display_ranges(cx),
6661 &[
6662 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
6663 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2),
6664 ]
6665 );
6666 });
6667
6668 view.update(cx, |view, cx| {
6669 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6670 assert_eq!(
6671 view.selected_display_ranges(cx),
6672 &[
6673 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
6674 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
6675 ]
6676 );
6677 });
6678
6679 view.update(cx, |view, cx| {
6680 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6681 assert_eq!(
6682 view.selected_display_ranges(cx),
6683 &[
6684 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6685 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6686 ]
6687 );
6688 });
6689
6690 view.update(cx, |view, cx| {
6691 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6692 assert_eq!(
6693 view.selected_display_ranges(cx),
6694 &[
6695 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6696 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 23),
6697 ]
6698 );
6699 });
6700
6701 view.update(cx, |view, cx| {
6702 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6703 assert_eq!(
6704 view.selected_display_ranges(cx),
6705 &[
6706 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6707 DisplayPoint::new(0, 24)..DisplayPoint::new(0, 24),
6708 ]
6709 );
6710 });
6711
6712 view.update(cx, |view, cx| {
6713 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6714 assert_eq!(
6715 view.selected_display_ranges(cx),
6716 &[
6717 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
6718 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6719 ]
6720 );
6721 });
6722
6723 view.update(cx, |view, cx| {
6724 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6725 assert_eq!(
6726 view.selected_display_ranges(cx),
6727 &[
6728 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
6729 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
6730 ]
6731 );
6732 });
6733
6734 view.update(cx, |view, cx| {
6735 view.move_right(&MoveRight, cx);
6736 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
6737 assert_eq!(
6738 view.selected_display_ranges(cx),
6739 &[
6740 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
6741 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
6742 ]
6743 );
6744 });
6745
6746 view.update(cx, |view, cx| {
6747 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
6748 assert_eq!(
6749 view.selected_display_ranges(cx),
6750 &[
6751 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 7),
6752 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 2),
6753 ]
6754 );
6755 });
6756
6757 view.update(cx, |view, cx| {
6758 view.select_to_next_word_boundary(&SelectToNextWordBoundary, cx);
6759 assert_eq!(
6760 view.selected_display_ranges(cx),
6761 &[
6762 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
6763 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
6764 ]
6765 );
6766 });
6767 }
6768
6769 #[gpui::test]
6770 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
6771 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
6772 let settings = Settings::test(&cx);
6773 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6774
6775 view.update(cx, |view, cx| {
6776 view.set_wrap_width(Some(140.), cx);
6777 assert_eq!(
6778 view.display_text(cx),
6779 "use one::{\n two::three::\n four::five\n};"
6780 );
6781
6782 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx);
6783
6784 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6785 assert_eq!(
6786 view.selected_display_ranges(cx),
6787 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
6788 );
6789
6790 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6791 assert_eq!(
6792 view.selected_display_ranges(cx),
6793 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
6794 );
6795
6796 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6797 assert_eq!(
6798 view.selected_display_ranges(cx),
6799 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
6800 );
6801
6802 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6803 assert_eq!(
6804 view.selected_display_ranges(cx),
6805 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
6806 );
6807
6808 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6809 assert_eq!(
6810 view.selected_display_ranges(cx),
6811 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
6812 );
6813
6814 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6815 assert_eq!(
6816 view.selected_display_ranges(cx),
6817 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
6818 );
6819 });
6820 }
6821
6822 #[gpui::test]
6823 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
6824 let buffer = MultiBuffer::build_simple("one two three four", cx);
6825 let settings = Settings::test(&cx);
6826 let (_, view) = cx.add_window(Default::default(), |cx| {
6827 build_editor(buffer.clone(), settings, cx)
6828 });
6829
6830 view.update(cx, |view, cx| {
6831 view.select_display_ranges(
6832 &[
6833 // an empty selection - the preceding word fragment is deleted
6834 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6835 // characters selected - they are deleted
6836 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
6837 ],
6838 cx,
6839 );
6840 view.delete_to_previous_word_boundary(&DeleteToPreviousWordBoundary, cx);
6841 });
6842
6843 assert_eq!(buffer.read(cx).read(cx).text(), "e two te four");
6844
6845 view.update(cx, |view, cx| {
6846 view.select_display_ranges(
6847 &[
6848 // an empty selection - the following word fragment is deleted
6849 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6850 // characters selected - they are deleted
6851 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
6852 ],
6853 cx,
6854 );
6855 view.delete_to_next_word_boundary(&DeleteToNextWordBoundary, cx);
6856 });
6857
6858 assert_eq!(buffer.read(cx).read(cx).text(), "e t te our");
6859 }
6860
6861 #[gpui::test]
6862 fn test_newline(cx: &mut gpui::MutableAppContext) {
6863 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
6864 let settings = Settings::test(&cx);
6865 let (_, view) = cx.add_window(Default::default(), |cx| {
6866 build_editor(buffer.clone(), settings, cx)
6867 });
6868
6869 view.update(cx, |view, cx| {
6870 view.select_display_ranges(
6871 &[
6872 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6873 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6874 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
6875 ],
6876 cx,
6877 );
6878
6879 view.newline(&Newline, cx);
6880 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
6881 });
6882 }
6883
6884 #[gpui::test]
6885 fn test_newline_with_old_selections(cx: &mut gpui::MutableAppContext) {
6886 let buffer = MultiBuffer::build_simple(
6887 "
6888 a
6889 b(
6890 X
6891 )
6892 c(
6893 X
6894 )
6895 "
6896 .unindent()
6897 .as_str(),
6898 cx,
6899 );
6900
6901 let settings = Settings::test(&cx);
6902 let (_, editor) = cx.add_window(Default::default(), |cx| {
6903 let mut editor = build_editor(buffer.clone(), settings, cx);
6904 editor.select_ranges(
6905 [
6906 Point::new(2, 4)..Point::new(2, 5),
6907 Point::new(5, 4)..Point::new(5, 5),
6908 ],
6909 None,
6910 cx,
6911 );
6912 editor
6913 });
6914
6915 // Edit the buffer directly, deleting ranges surrounding the editor's selections
6916 buffer.update(cx, |buffer, cx| {
6917 buffer.edit(
6918 [
6919 Point::new(1, 2)..Point::new(3, 0),
6920 Point::new(4, 2)..Point::new(6, 0),
6921 ],
6922 "",
6923 cx,
6924 );
6925 assert_eq!(
6926 buffer.read(cx).text(),
6927 "
6928 a
6929 b()
6930 c()
6931 "
6932 .unindent()
6933 );
6934 });
6935
6936 editor.update(cx, |editor, cx| {
6937 assert_eq!(
6938 editor.selected_ranges(cx),
6939 &[
6940 Point::new(1, 2)..Point::new(1, 2),
6941 Point::new(2, 2)..Point::new(2, 2),
6942 ],
6943 );
6944
6945 editor.newline(&Newline, cx);
6946 assert_eq!(
6947 editor.text(cx),
6948 "
6949 a
6950 b(
6951 )
6952 c(
6953 )
6954 "
6955 .unindent()
6956 );
6957
6958 // The selections are moved after the inserted newlines
6959 assert_eq!(
6960 editor.selected_ranges(cx),
6961 &[
6962 Point::new(2, 0)..Point::new(2, 0),
6963 Point::new(4, 0)..Point::new(4, 0),
6964 ],
6965 );
6966 });
6967 }
6968
6969 #[gpui::test]
6970 fn test_insert_with_old_selections(cx: &mut gpui::MutableAppContext) {
6971 let buffer = MultiBuffer::build_simple("a( X ), b( Y ), c( Z )", cx);
6972
6973 let settings = Settings::test(&cx);
6974 let (_, editor) = cx.add_window(Default::default(), |cx| {
6975 let mut editor = build_editor(buffer.clone(), settings, cx);
6976 editor.select_ranges([3..4, 11..12, 19..20], None, cx);
6977 editor
6978 });
6979
6980 // Edit the buffer directly, deleting ranges surrounding the editor's selections
6981 buffer.update(cx, |buffer, cx| {
6982 buffer.edit([2..5, 10..13, 18..21], "", cx);
6983 assert_eq!(buffer.read(cx).text(), "a(), b(), c()".unindent());
6984 });
6985
6986 editor.update(cx, |editor, cx| {
6987 assert_eq!(editor.selected_ranges(cx), &[2..2, 7..7, 12..12],);
6988
6989 editor.insert("Z", cx);
6990 assert_eq!(editor.text(cx), "a(Z), b(Z), c(Z)");
6991
6992 // The selections are moved after the inserted characters
6993 assert_eq!(editor.selected_ranges(cx), &[3..3, 9..9, 15..15],);
6994 });
6995 }
6996
6997 #[gpui::test]
6998 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
6999 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
7000 let settings = Settings::test(&cx);
7001 let (_, view) = cx.add_window(Default::default(), |cx| {
7002 build_editor(buffer.clone(), settings, cx)
7003 });
7004
7005 view.update(cx, |view, cx| {
7006 // two selections on the same line
7007 view.select_display_ranges(
7008 &[
7009 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
7010 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
7011 ],
7012 cx,
7013 );
7014
7015 // indent from mid-tabstop to full tabstop
7016 view.tab(&Tab, cx);
7017 assert_eq!(view.text(cx), " one two\nthree\n four");
7018 assert_eq!(
7019 view.selected_display_ranges(cx),
7020 &[
7021 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
7022 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
7023 ]
7024 );
7025
7026 // outdent from 1 tabstop to 0 tabstops
7027 view.outdent(&Outdent, cx);
7028 assert_eq!(view.text(cx), "one two\nthree\n four");
7029 assert_eq!(
7030 view.selected_display_ranges(cx),
7031 &[
7032 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
7033 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
7034 ]
7035 );
7036
7037 // select across line ending
7038 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx);
7039
7040 // indent and outdent affect only the preceding line
7041 view.tab(&Tab, cx);
7042 assert_eq!(view.text(cx), "one two\n three\n four");
7043 assert_eq!(
7044 view.selected_display_ranges(cx),
7045 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
7046 );
7047 view.outdent(&Outdent, cx);
7048 assert_eq!(view.text(cx), "one two\nthree\n four");
7049 assert_eq!(
7050 view.selected_display_ranges(cx),
7051 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
7052 );
7053
7054 // Ensure that indenting/outdenting works when the cursor is at column 0.
7055 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
7056 view.tab(&Tab, cx);
7057 assert_eq!(view.text(cx), "one two\n three\n four");
7058 assert_eq!(
7059 view.selected_display_ranges(cx),
7060 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
7061 );
7062
7063 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
7064 view.outdent(&Outdent, cx);
7065 assert_eq!(view.text(cx), "one two\nthree\n four");
7066 assert_eq!(
7067 view.selected_display_ranges(cx),
7068 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
7069 );
7070 });
7071 }
7072
7073 #[gpui::test]
7074 fn test_backspace(cx: &mut gpui::MutableAppContext) {
7075 let buffer =
7076 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
7077 let settings = Settings::test(&cx);
7078 let (_, view) = cx.add_window(Default::default(), |cx| {
7079 build_editor(buffer.clone(), settings, cx)
7080 });
7081
7082 view.update(cx, |view, cx| {
7083 view.select_display_ranges(
7084 &[
7085 // an empty selection - the preceding character is deleted
7086 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7087 // one character selected - it is deleted
7088 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7089 // a line suffix selected - it is deleted
7090 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
7091 ],
7092 cx,
7093 );
7094 view.backspace(&Backspace, cx);
7095 });
7096
7097 assert_eq!(
7098 buffer.read(cx).read(cx).text(),
7099 "oe two three\nfou five six\nseven ten\n"
7100 );
7101 }
7102
7103 #[gpui::test]
7104 fn test_delete(cx: &mut gpui::MutableAppContext) {
7105 let buffer =
7106 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
7107 let settings = Settings::test(&cx);
7108 let (_, view) = cx.add_window(Default::default(), |cx| {
7109 build_editor(buffer.clone(), settings, cx)
7110 });
7111
7112 view.update(cx, |view, cx| {
7113 view.select_display_ranges(
7114 &[
7115 // an empty selection - the following character is deleted
7116 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7117 // one character selected - it is deleted
7118 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7119 // a line suffix selected - it is deleted
7120 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
7121 ],
7122 cx,
7123 );
7124 view.delete(&Delete, cx);
7125 });
7126
7127 assert_eq!(
7128 buffer.read(cx).read(cx).text(),
7129 "on two three\nfou five six\nseven ten\n"
7130 );
7131 }
7132
7133 #[gpui::test]
7134 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
7135 let settings = Settings::test(&cx);
7136 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7137 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7138 view.update(cx, |view, cx| {
7139 view.select_display_ranges(
7140 &[
7141 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7142 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
7143 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7144 ],
7145 cx,
7146 );
7147 view.delete_line(&DeleteLine, cx);
7148 assert_eq!(view.display_text(cx), "ghi");
7149 assert_eq!(
7150 view.selected_display_ranges(cx),
7151 vec![
7152 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7153 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
7154 ]
7155 );
7156 });
7157
7158 let settings = Settings::test(&cx);
7159 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7160 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7161 view.update(cx, |view, cx| {
7162 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx);
7163 view.delete_line(&DeleteLine, cx);
7164 assert_eq!(view.display_text(cx), "ghi\n");
7165 assert_eq!(
7166 view.selected_display_ranges(cx),
7167 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
7168 );
7169 });
7170 }
7171
7172 #[gpui::test]
7173 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
7174 let settings = Settings::test(&cx);
7175 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7176 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7177 view.update(cx, |view, cx| {
7178 view.select_display_ranges(
7179 &[
7180 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7181 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7182 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7183 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7184 ],
7185 cx,
7186 );
7187 view.duplicate_line(&DuplicateLine, cx);
7188 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
7189 assert_eq!(
7190 view.selected_display_ranges(cx),
7191 vec![
7192 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
7193 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7194 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7195 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
7196 ]
7197 );
7198 });
7199
7200 let settings = Settings::test(&cx);
7201 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7202 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7203 view.update(cx, |view, cx| {
7204 view.select_display_ranges(
7205 &[
7206 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
7207 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
7208 ],
7209 cx,
7210 );
7211 view.duplicate_line(&DuplicateLine, cx);
7212 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
7213 assert_eq!(
7214 view.selected_display_ranges(cx),
7215 vec![
7216 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
7217 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
7218 ]
7219 );
7220 });
7221 }
7222
7223 #[gpui::test]
7224 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
7225 let settings = Settings::test(&cx);
7226 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
7227 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7228 view.update(cx, |view, cx| {
7229 view.fold_ranges(
7230 vec![
7231 Point::new(0, 2)..Point::new(1, 2),
7232 Point::new(2, 3)..Point::new(4, 1),
7233 Point::new(7, 0)..Point::new(8, 4),
7234 ],
7235 cx,
7236 );
7237 view.select_display_ranges(
7238 &[
7239 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7240 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7241 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7242 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
7243 ],
7244 cx,
7245 );
7246 assert_eq!(
7247 view.display_text(cx),
7248 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
7249 );
7250
7251 view.move_line_up(&MoveLineUp, cx);
7252 assert_eq!(
7253 view.display_text(cx),
7254 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
7255 );
7256 assert_eq!(
7257 view.selected_display_ranges(cx),
7258 vec![
7259 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7260 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7261 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
7262 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
7263 ]
7264 );
7265 });
7266
7267 view.update(cx, |view, cx| {
7268 view.move_line_down(&MoveLineDown, cx);
7269 assert_eq!(
7270 view.display_text(cx),
7271 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
7272 );
7273 assert_eq!(
7274 view.selected_display_ranges(cx),
7275 vec![
7276 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7277 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7278 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7279 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
7280 ]
7281 );
7282 });
7283
7284 view.update(cx, |view, cx| {
7285 view.move_line_down(&MoveLineDown, cx);
7286 assert_eq!(
7287 view.display_text(cx),
7288 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
7289 );
7290 assert_eq!(
7291 view.selected_display_ranges(cx),
7292 vec![
7293 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7294 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7295 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7296 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
7297 ]
7298 );
7299 });
7300
7301 view.update(cx, |view, cx| {
7302 view.move_line_up(&MoveLineUp, cx);
7303 assert_eq!(
7304 view.display_text(cx),
7305 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
7306 );
7307 assert_eq!(
7308 view.selected_display_ranges(cx),
7309 vec![
7310 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7311 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7312 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
7313 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
7314 ]
7315 );
7316 });
7317 }
7318
7319 #[gpui::test]
7320 fn test_move_line_up_down_with_blocks(cx: &mut gpui::MutableAppContext) {
7321 let settings = Settings::test(&cx);
7322 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
7323 let snapshot = buffer.read(cx).snapshot(cx);
7324 let (_, editor) =
7325 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7326 editor.update(cx, |editor, cx| {
7327 editor.insert_blocks(
7328 [BlockProperties {
7329 position: snapshot.anchor_after(Point::new(2, 0)),
7330 disposition: BlockDisposition::Below,
7331 height: 1,
7332 render: Arc::new(|_| Empty::new().boxed()),
7333 }],
7334 cx,
7335 );
7336 editor.select_ranges([Point::new(2, 0)..Point::new(2, 0)], None, cx);
7337 editor.move_line_down(&MoveLineDown, cx);
7338 });
7339 }
7340
7341 #[gpui::test]
7342 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
7343 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
7344 let settings = Settings::test(&cx);
7345 let view = cx
7346 .add_window(Default::default(), |cx| {
7347 build_editor(buffer.clone(), settings, cx)
7348 })
7349 .1;
7350
7351 // Cut with three selections. Clipboard text is divided into three slices.
7352 view.update(cx, |view, cx| {
7353 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
7354 view.cut(&Cut, cx);
7355 assert_eq!(view.display_text(cx), "two four six ");
7356 });
7357
7358 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
7359 view.update(cx, |view, cx| {
7360 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
7361 view.paste(&Paste, cx);
7362 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
7363 assert_eq!(
7364 view.selected_display_ranges(cx),
7365 &[
7366 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
7367 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
7368 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
7369 ]
7370 );
7371 });
7372
7373 // Paste again but with only two cursors. Since the number of cursors doesn't
7374 // match the number of slices in the clipboard, the entire clipboard text
7375 // is pasted at each cursor.
7376 view.update(cx, |view, cx| {
7377 view.select_ranges(vec![0..0, 31..31], None, cx);
7378 view.handle_input(&Input("( ".into()), cx);
7379 view.paste(&Paste, cx);
7380 view.handle_input(&Input(") ".into()), cx);
7381 assert_eq!(
7382 view.display_text(cx),
7383 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7384 );
7385 });
7386
7387 view.update(cx, |view, cx| {
7388 view.select_ranges(vec![0..0], None, cx);
7389 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
7390 assert_eq!(
7391 view.display_text(cx),
7392 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7393 );
7394 });
7395
7396 // Cut with three selections, one of which is full-line.
7397 view.update(cx, |view, cx| {
7398 view.select_display_ranges(
7399 &[
7400 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
7401 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7402 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
7403 ],
7404 cx,
7405 );
7406 view.cut(&Cut, cx);
7407 assert_eq!(
7408 view.display_text(cx),
7409 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7410 );
7411 });
7412
7413 // Paste with three selections, noticing how the copied selection that was full-line
7414 // gets inserted before the second cursor.
7415 view.update(cx, |view, cx| {
7416 view.select_display_ranges(
7417 &[
7418 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7419 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7420 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
7421 ],
7422 cx,
7423 );
7424 view.paste(&Paste, cx);
7425 assert_eq!(
7426 view.display_text(cx),
7427 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
7428 );
7429 assert_eq!(
7430 view.selected_display_ranges(cx),
7431 &[
7432 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7433 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7434 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
7435 ]
7436 );
7437 });
7438
7439 // Copy with a single cursor only, which writes the whole line into the clipboard.
7440 view.update(cx, |view, cx| {
7441 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx);
7442 view.copy(&Copy, cx);
7443 });
7444
7445 // Paste with three selections, noticing how the copied full-line selection is inserted
7446 // before the empty selections but replaces the selection that is non-empty.
7447 view.update(cx, |view, cx| {
7448 view.select_display_ranges(
7449 &[
7450 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7451 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
7452 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7453 ],
7454 cx,
7455 );
7456 view.paste(&Paste, cx);
7457 assert_eq!(
7458 view.display_text(cx),
7459 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
7460 );
7461 assert_eq!(
7462 view.selected_display_ranges(cx),
7463 &[
7464 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7465 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7466 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
7467 ]
7468 );
7469 });
7470 }
7471
7472 #[gpui::test]
7473 fn test_select_all(cx: &mut gpui::MutableAppContext) {
7474 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
7475 let settings = Settings::test(&cx);
7476 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7477 view.update(cx, |view, cx| {
7478 view.select_all(&SelectAll, cx);
7479 assert_eq!(
7480 view.selected_display_ranges(cx),
7481 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
7482 );
7483 });
7484 }
7485
7486 #[gpui::test]
7487 fn test_select_line(cx: &mut gpui::MutableAppContext) {
7488 let settings = Settings::test(&cx);
7489 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
7490 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7491 view.update(cx, |view, cx| {
7492 view.select_display_ranges(
7493 &[
7494 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7495 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7496 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7497 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
7498 ],
7499 cx,
7500 );
7501 view.select_line(&SelectLine, cx);
7502 assert_eq!(
7503 view.selected_display_ranges(cx),
7504 vec![
7505 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
7506 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
7507 ]
7508 );
7509 });
7510
7511 view.update(cx, |view, cx| {
7512 view.select_line(&SelectLine, cx);
7513 assert_eq!(
7514 view.selected_display_ranges(cx),
7515 vec![
7516 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
7517 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
7518 ]
7519 );
7520 });
7521
7522 view.update(cx, |view, cx| {
7523 view.select_line(&SelectLine, cx);
7524 assert_eq!(
7525 view.selected_display_ranges(cx),
7526 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
7527 );
7528 });
7529 }
7530
7531 #[gpui::test]
7532 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
7533 let settings = Settings::test(&cx);
7534 let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
7535 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7536 view.update(cx, |view, cx| {
7537 view.fold_ranges(
7538 vec![
7539 Point::new(0, 2)..Point::new(1, 2),
7540 Point::new(2, 3)..Point::new(4, 1),
7541 Point::new(7, 0)..Point::new(8, 4),
7542 ],
7543 cx,
7544 );
7545 view.select_display_ranges(
7546 &[
7547 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7548 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7549 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7550 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
7551 ],
7552 cx,
7553 );
7554 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
7555 });
7556
7557 view.update(cx, |view, cx| {
7558 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
7559 assert_eq!(
7560 view.display_text(cx),
7561 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
7562 );
7563 assert_eq!(
7564 view.selected_display_ranges(cx),
7565 [
7566 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7567 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7568 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
7569 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
7570 ]
7571 );
7572 });
7573
7574 view.update(cx, |view, cx| {
7575 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx);
7576 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
7577 assert_eq!(
7578 view.display_text(cx),
7579 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
7580 );
7581 assert_eq!(
7582 view.selected_display_ranges(cx),
7583 [
7584 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
7585 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
7586 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7587 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
7588 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
7589 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
7590 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
7591 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
7592 ]
7593 );
7594 });
7595 }
7596
7597 #[gpui::test]
7598 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
7599 let settings = Settings::test(&cx);
7600 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
7601 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7602
7603 view.update(cx, |view, cx| {
7604 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx);
7605 });
7606 view.update(cx, |view, cx| {
7607 view.add_selection_above(&AddSelectionAbove, cx);
7608 assert_eq!(
7609 view.selected_display_ranges(cx),
7610 vec![
7611 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7612 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
7613 ]
7614 );
7615 });
7616
7617 view.update(cx, |view, cx| {
7618 view.add_selection_above(&AddSelectionAbove, cx);
7619 assert_eq!(
7620 view.selected_display_ranges(cx),
7621 vec![
7622 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7623 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
7624 ]
7625 );
7626 });
7627
7628 view.update(cx, |view, cx| {
7629 view.add_selection_below(&AddSelectionBelow, cx);
7630 assert_eq!(
7631 view.selected_display_ranges(cx),
7632 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
7633 );
7634 });
7635
7636 view.update(cx, |view, cx| {
7637 view.add_selection_below(&AddSelectionBelow, cx);
7638 assert_eq!(
7639 view.selected_display_ranges(cx),
7640 vec![
7641 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7642 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
7643 ]
7644 );
7645 });
7646
7647 view.update(cx, |view, cx| {
7648 view.add_selection_below(&AddSelectionBelow, cx);
7649 assert_eq!(
7650 view.selected_display_ranges(cx),
7651 vec![
7652 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7653 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
7654 ]
7655 );
7656 });
7657
7658 view.update(cx, |view, cx| {
7659 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx);
7660 });
7661 view.update(cx, |view, cx| {
7662 view.add_selection_below(&AddSelectionBelow, cx);
7663 assert_eq!(
7664 view.selected_display_ranges(cx),
7665 vec![
7666 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7667 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
7668 ]
7669 );
7670 });
7671
7672 view.update(cx, |view, cx| {
7673 view.add_selection_below(&AddSelectionBelow, cx);
7674 assert_eq!(
7675 view.selected_display_ranges(cx),
7676 vec![
7677 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7678 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
7679 ]
7680 );
7681 });
7682
7683 view.update(cx, |view, cx| {
7684 view.add_selection_above(&AddSelectionAbove, cx);
7685 assert_eq!(
7686 view.selected_display_ranges(cx),
7687 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
7688 );
7689 });
7690
7691 view.update(cx, |view, cx| {
7692 view.add_selection_above(&AddSelectionAbove, cx);
7693 assert_eq!(
7694 view.selected_display_ranges(cx),
7695 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
7696 );
7697 });
7698
7699 view.update(cx, |view, cx| {
7700 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx);
7701 view.add_selection_below(&AddSelectionBelow, cx);
7702 assert_eq!(
7703 view.selected_display_ranges(cx),
7704 vec![
7705 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7706 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7707 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7708 ]
7709 );
7710 });
7711
7712 view.update(cx, |view, cx| {
7713 view.add_selection_below(&AddSelectionBelow, cx);
7714 assert_eq!(
7715 view.selected_display_ranges(cx),
7716 vec![
7717 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7718 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7719 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7720 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
7721 ]
7722 );
7723 });
7724
7725 view.update(cx, |view, cx| {
7726 view.add_selection_above(&AddSelectionAbove, cx);
7727 assert_eq!(
7728 view.selected_display_ranges(cx),
7729 vec![
7730 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7731 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7732 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7733 ]
7734 );
7735 });
7736
7737 view.update(cx, |view, cx| {
7738 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx);
7739 });
7740 view.update(cx, |view, cx| {
7741 view.add_selection_above(&AddSelectionAbove, cx);
7742 assert_eq!(
7743 view.selected_display_ranges(cx),
7744 vec![
7745 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
7746 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
7747 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
7748 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
7749 ]
7750 );
7751 });
7752
7753 view.update(cx, |view, cx| {
7754 view.add_selection_below(&AddSelectionBelow, cx);
7755 assert_eq!(
7756 view.selected_display_ranges(cx),
7757 vec![
7758 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
7759 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
7760 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
7761 ]
7762 );
7763 });
7764 }
7765
7766 #[gpui::test]
7767 async fn test_select_larger_smaller_syntax_node(mut cx: gpui::TestAppContext) {
7768 let settings = cx.read(Settings::test);
7769 let language = Arc::new(Language::new(
7770 LanguageConfig::default(),
7771 Some(tree_sitter_rust::language()),
7772 ));
7773
7774 let text = r#"
7775 use mod1::mod2::{mod3, mod4};
7776
7777 fn fn_1(param1: bool, param2: &str) {
7778 let var1 = "text";
7779 }
7780 "#
7781 .unindent();
7782
7783 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7784 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7785 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7786 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
7787 .await;
7788
7789 view.update(&mut cx, |view, cx| {
7790 view.select_display_ranges(
7791 &[
7792 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7793 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7794 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7795 ],
7796 cx,
7797 );
7798 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7799 });
7800 assert_eq!(
7801 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7802 &[
7803 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
7804 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7805 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
7806 ]
7807 );
7808
7809 view.update(&mut cx, |view, cx| {
7810 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7811 });
7812 assert_eq!(
7813 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7814 &[
7815 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
7816 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
7817 ]
7818 );
7819
7820 view.update(&mut cx, |view, cx| {
7821 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7822 });
7823 assert_eq!(
7824 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7825 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
7826 );
7827
7828 // Trying to expand the selected syntax node one more time has no effect.
7829 view.update(&mut cx, |view, cx| {
7830 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7831 });
7832 assert_eq!(
7833 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7834 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
7835 );
7836
7837 view.update(&mut cx, |view, cx| {
7838 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7839 });
7840 assert_eq!(
7841 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7842 &[
7843 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
7844 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
7845 ]
7846 );
7847
7848 view.update(&mut cx, |view, cx| {
7849 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7850 });
7851 assert_eq!(
7852 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7853 &[
7854 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
7855 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7856 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
7857 ]
7858 );
7859
7860 view.update(&mut cx, |view, cx| {
7861 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7862 });
7863 assert_eq!(
7864 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7865 &[
7866 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7867 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7868 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7869 ]
7870 );
7871
7872 // Trying to shrink the selected syntax node one more time has no effect.
7873 view.update(&mut cx, |view, cx| {
7874 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7875 });
7876 assert_eq!(
7877 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7878 &[
7879 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7880 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7881 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7882 ]
7883 );
7884
7885 // Ensure that we keep expanding the selection if the larger selection starts or ends within
7886 // a fold.
7887 view.update(&mut cx, |view, cx| {
7888 view.fold_ranges(
7889 vec![
7890 Point::new(0, 21)..Point::new(0, 24),
7891 Point::new(3, 20)..Point::new(3, 22),
7892 ],
7893 cx,
7894 );
7895 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7896 });
7897 assert_eq!(
7898 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7899 &[
7900 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
7901 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7902 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
7903 ]
7904 );
7905 }
7906
7907 #[gpui::test]
7908 async fn test_autoindent_selections(mut cx: gpui::TestAppContext) {
7909 let settings = cx.read(Settings::test);
7910 let language = Arc::new(
7911 Language::new(
7912 LanguageConfig {
7913 brackets: vec![
7914 BracketPair {
7915 start: "{".to_string(),
7916 end: "}".to_string(),
7917 close: false,
7918 newline: true,
7919 },
7920 BracketPair {
7921 start: "(".to_string(),
7922 end: ")".to_string(),
7923 close: false,
7924 newline: true,
7925 },
7926 ],
7927 ..Default::default()
7928 },
7929 Some(tree_sitter_rust::language()),
7930 )
7931 .with_indents_query(
7932 r#"
7933 (_ "(" ")" @end) @indent
7934 (_ "{" "}" @end) @indent
7935 "#,
7936 )
7937 .unwrap(),
7938 );
7939
7940 let text = "fn a() {}";
7941
7942 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7943 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7944 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7945 editor
7946 .condition(&cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
7947 .await;
7948
7949 editor.update(&mut cx, |editor, cx| {
7950 editor.select_ranges([5..5, 8..8, 9..9], None, cx);
7951 editor.newline(&Newline, cx);
7952 assert_eq!(editor.text(cx), "fn a(\n \n) {\n \n}\n");
7953 assert_eq!(
7954 editor.selected_ranges(cx),
7955 &[
7956 Point::new(1, 4)..Point::new(1, 4),
7957 Point::new(3, 4)..Point::new(3, 4),
7958 Point::new(5, 0)..Point::new(5, 0)
7959 ]
7960 );
7961 });
7962 }
7963
7964 #[gpui::test]
7965 async fn test_autoclose_pairs(mut cx: gpui::TestAppContext) {
7966 let settings = cx.read(Settings::test);
7967 let language = Arc::new(Language::new(
7968 LanguageConfig {
7969 brackets: vec![
7970 BracketPair {
7971 start: "{".to_string(),
7972 end: "}".to_string(),
7973 close: true,
7974 newline: true,
7975 },
7976 BracketPair {
7977 start: "/*".to_string(),
7978 end: " */".to_string(),
7979 close: true,
7980 newline: true,
7981 },
7982 ],
7983 ..Default::default()
7984 },
7985 Some(tree_sitter_rust::language()),
7986 ));
7987
7988 let text = r#"
7989 a
7990
7991 /
7992
7993 "#
7994 .unindent();
7995
7996 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7997 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7998 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7999 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
8000 .await;
8001
8002 view.update(&mut cx, |view, cx| {
8003 view.select_display_ranges(
8004 &[
8005 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
8006 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
8007 ],
8008 cx,
8009 );
8010 view.handle_input(&Input("{".to_string()), cx);
8011 view.handle_input(&Input("{".to_string()), cx);
8012 view.handle_input(&Input("{".to_string()), cx);
8013 assert_eq!(
8014 view.text(cx),
8015 "
8016 {{{}}}
8017 {{{}}}
8018 /
8019
8020 "
8021 .unindent()
8022 );
8023
8024 view.move_right(&MoveRight, cx);
8025 view.handle_input(&Input("}".to_string()), cx);
8026 view.handle_input(&Input("}".to_string()), cx);
8027 view.handle_input(&Input("}".to_string()), cx);
8028 assert_eq!(
8029 view.text(cx),
8030 "
8031 {{{}}}}
8032 {{{}}}}
8033 /
8034
8035 "
8036 .unindent()
8037 );
8038
8039 view.undo(&Undo, cx);
8040 view.handle_input(&Input("/".to_string()), cx);
8041 view.handle_input(&Input("*".to_string()), cx);
8042 assert_eq!(
8043 view.text(cx),
8044 "
8045 /* */
8046 /* */
8047 /
8048
8049 "
8050 .unindent()
8051 );
8052
8053 view.undo(&Undo, cx);
8054 view.select_display_ranges(
8055 &[
8056 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
8057 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
8058 ],
8059 cx,
8060 );
8061 view.handle_input(&Input("*".to_string()), cx);
8062 assert_eq!(
8063 view.text(cx),
8064 "
8065 a
8066
8067 /*
8068 *
8069 "
8070 .unindent()
8071 );
8072 });
8073 }
8074
8075 #[gpui::test]
8076 async fn test_snippets(mut cx: gpui::TestAppContext) {
8077 let settings = cx.read(Settings::test);
8078
8079 let text = "
8080 a. b
8081 a. b
8082 a. b
8083 "
8084 .unindent();
8085 let buffer = cx.update(|cx| MultiBuffer::build_simple(&text, cx));
8086 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8087
8088 editor.update(&mut cx, |editor, cx| {
8089 let buffer = &editor.snapshot(cx).buffer_snapshot;
8090 let snippet = Snippet::parse("f(${1:one}, ${2:two}, ${1:three})$0").unwrap();
8091 let insertion_ranges = [
8092 Point::new(0, 2).to_offset(buffer)..Point::new(0, 2).to_offset(buffer),
8093 Point::new(1, 2).to_offset(buffer)..Point::new(1, 2).to_offset(buffer),
8094 Point::new(2, 2).to_offset(buffer)..Point::new(2, 2).to_offset(buffer),
8095 ];
8096
8097 editor
8098 .insert_snippet(&insertion_ranges, snippet, cx)
8099 .unwrap();
8100 assert_eq!(
8101 editor.text(cx),
8102 "
8103 a.f(one, two, three) b
8104 a.f(one, two, three) b
8105 a.f(one, two, three) b
8106 "
8107 .unindent()
8108 );
8109 assert_eq!(
8110 editor.selected_ranges::<Point>(cx),
8111 &[
8112 Point::new(0, 4)..Point::new(0, 7),
8113 Point::new(0, 14)..Point::new(0, 19),
8114 Point::new(1, 4)..Point::new(1, 7),
8115 Point::new(1, 14)..Point::new(1, 19),
8116 Point::new(2, 4)..Point::new(2, 7),
8117 Point::new(2, 14)..Point::new(2, 19),
8118 ]
8119 );
8120
8121 // Can't move earlier than the first tab stop
8122 editor.move_to_prev_snippet_tabstop(cx);
8123 assert_eq!(
8124 editor.selected_ranges::<Point>(cx),
8125 &[
8126 Point::new(0, 4)..Point::new(0, 7),
8127 Point::new(0, 14)..Point::new(0, 19),
8128 Point::new(1, 4)..Point::new(1, 7),
8129 Point::new(1, 14)..Point::new(1, 19),
8130 Point::new(2, 4)..Point::new(2, 7),
8131 Point::new(2, 14)..Point::new(2, 19),
8132 ]
8133 );
8134
8135 assert!(editor.move_to_next_snippet_tabstop(cx));
8136 assert_eq!(
8137 editor.selected_ranges::<Point>(cx),
8138 &[
8139 Point::new(0, 9)..Point::new(0, 12),
8140 Point::new(1, 9)..Point::new(1, 12),
8141 Point::new(2, 9)..Point::new(2, 12)
8142 ]
8143 );
8144
8145 editor.move_to_prev_snippet_tabstop(cx);
8146 assert_eq!(
8147 editor.selected_ranges::<Point>(cx),
8148 &[
8149 Point::new(0, 4)..Point::new(0, 7),
8150 Point::new(0, 14)..Point::new(0, 19),
8151 Point::new(1, 4)..Point::new(1, 7),
8152 Point::new(1, 14)..Point::new(1, 19),
8153 Point::new(2, 4)..Point::new(2, 7),
8154 Point::new(2, 14)..Point::new(2, 19),
8155 ]
8156 );
8157
8158 assert!(editor.move_to_next_snippet_tabstop(cx));
8159 assert!(editor.move_to_next_snippet_tabstop(cx));
8160 assert_eq!(
8161 editor.selected_ranges::<Point>(cx),
8162 &[
8163 Point::new(0, 20)..Point::new(0, 20),
8164 Point::new(1, 20)..Point::new(1, 20),
8165 Point::new(2, 20)..Point::new(2, 20)
8166 ]
8167 );
8168
8169 // As soon as the last tab stop is reached, snippet state is gone
8170 editor.move_to_prev_snippet_tabstop(cx);
8171 assert_eq!(
8172 editor.selected_ranges::<Point>(cx),
8173 &[
8174 Point::new(0, 20)..Point::new(0, 20),
8175 Point::new(1, 20)..Point::new(1, 20),
8176 Point::new(2, 20)..Point::new(2, 20)
8177 ]
8178 );
8179 });
8180 }
8181
8182 #[gpui::test]
8183 async fn test_completion(mut cx: gpui::TestAppContext) {
8184 let settings = cx.read(Settings::test);
8185 let (language_server, mut fake) = cx.update(|cx| {
8186 lsp::LanguageServer::fake_with_capabilities(
8187 lsp::ServerCapabilities {
8188 completion_provider: Some(lsp::CompletionOptions {
8189 trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
8190 ..Default::default()
8191 }),
8192 ..Default::default()
8193 },
8194 cx,
8195 )
8196 });
8197
8198 let text = "
8199 one
8200 two
8201 three
8202 "
8203 .unindent();
8204
8205 let fs = FakeFs::new(cx.background().clone());
8206 fs.insert_file("/file", text).await;
8207
8208 let project = Project::test(fs, &mut cx);
8209
8210 let (worktree, relative_path) = project
8211 .update(&mut cx, |project, cx| {
8212 project.find_or_create_local_worktree("/file", false, cx)
8213 })
8214 .await
8215 .unwrap();
8216 let project_path = ProjectPath {
8217 worktree_id: worktree.read_with(&cx, |worktree, _| worktree.id()),
8218 path: relative_path.into(),
8219 };
8220 let buffer = project
8221 .update(&mut cx, |project, cx| project.open_buffer(project_path, cx))
8222 .await
8223 .unwrap();
8224 buffer.update(&mut cx, |buffer, cx| {
8225 buffer.set_language_server(Some(language_server), cx);
8226 });
8227
8228 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8229 buffer.next_notification(&cx).await;
8230
8231 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8232
8233 editor.update(&mut cx, |editor, cx| {
8234 editor.project = Some(project);
8235 editor.select_ranges([Point::new(0, 3)..Point::new(0, 3)], None, cx);
8236 editor.handle_input(&Input(".".to_string()), cx);
8237 });
8238
8239 handle_completion_request(
8240 &mut fake,
8241 "/file",
8242 Point::new(0, 4),
8243 vec![
8244 (Point::new(0, 4)..Point::new(0, 4), "first_completion"),
8245 (Point::new(0, 4)..Point::new(0, 4), "second_completion"),
8246 ],
8247 )
8248 .await;
8249 editor
8250 .condition(&cx, |editor, _| editor.context_menu_visible())
8251 .await;
8252
8253 let apply_additional_edits = editor.update(&mut cx, |editor, cx| {
8254 editor.move_down(&MoveDown, cx);
8255 let apply_additional_edits = editor
8256 .confirm_completion(&ConfirmCompletion(None), cx)
8257 .unwrap();
8258 assert_eq!(
8259 editor.text(cx),
8260 "
8261 one.second_completion
8262 two
8263 three
8264 "
8265 .unindent()
8266 );
8267 apply_additional_edits
8268 });
8269
8270 handle_resolve_completion_request(
8271 &mut fake,
8272 Some((Point::new(2, 5)..Point::new(2, 5), "\nadditional edit")),
8273 )
8274 .await;
8275 apply_additional_edits.await.unwrap();
8276 assert_eq!(
8277 editor.read_with(&cx, |editor, cx| editor.text(cx)),
8278 "
8279 one.second_completion
8280 two
8281 three
8282 additional edit
8283 "
8284 .unindent()
8285 );
8286
8287 editor.update(&mut cx, |editor, cx| {
8288 editor.select_ranges(
8289 [
8290 Point::new(1, 3)..Point::new(1, 3),
8291 Point::new(2, 5)..Point::new(2, 5),
8292 ],
8293 None,
8294 cx,
8295 );
8296
8297 editor.handle_input(&Input(" ".to_string()), cx);
8298 assert!(editor.context_menu.is_none());
8299 editor.handle_input(&Input("s".to_string()), cx);
8300 assert!(editor.context_menu.is_none());
8301 });
8302
8303 handle_completion_request(
8304 &mut fake,
8305 "/file",
8306 Point::new(2, 7),
8307 vec![
8308 (Point::new(2, 6)..Point::new(2, 7), "fourth_completion"),
8309 (Point::new(2, 6)..Point::new(2, 7), "fifth_completion"),
8310 (Point::new(2, 6)..Point::new(2, 7), "sixth_completion"),
8311 ],
8312 )
8313 .await;
8314 editor
8315 .condition(&cx, |editor, _| editor.context_menu_visible())
8316 .await;
8317
8318 editor.update(&mut cx, |editor, cx| {
8319 editor.handle_input(&Input("i".to_string()), cx);
8320 });
8321
8322 handle_completion_request(
8323 &mut fake,
8324 "/file",
8325 Point::new(2, 8),
8326 vec![
8327 (Point::new(2, 6)..Point::new(2, 8), "fourth_completion"),
8328 (Point::new(2, 6)..Point::new(2, 8), "fifth_completion"),
8329 (Point::new(2, 6)..Point::new(2, 8), "sixth_completion"),
8330 ],
8331 )
8332 .await;
8333 editor
8334 .condition(&cx, |editor, _| editor.context_menu_visible())
8335 .await;
8336
8337 let apply_additional_edits = editor.update(&mut cx, |editor, cx| {
8338 let apply_additional_edits = editor
8339 .confirm_completion(&ConfirmCompletion(None), cx)
8340 .unwrap();
8341 assert_eq!(
8342 editor.text(cx),
8343 "
8344 one.second_completion
8345 two sixth_completion
8346 three sixth_completion
8347 additional edit
8348 "
8349 .unindent()
8350 );
8351 apply_additional_edits
8352 });
8353 handle_resolve_completion_request(&mut fake, None).await;
8354 apply_additional_edits.await.unwrap();
8355
8356 async fn handle_completion_request(
8357 fake: &mut FakeLanguageServer,
8358 path: &'static str,
8359 position: Point,
8360 completions: Vec<(Range<Point>, &'static str)>,
8361 ) {
8362 fake.handle_request::<lsp::request::Completion, _>(move |params, _| {
8363 assert_eq!(
8364 params.text_document_position.text_document.uri,
8365 lsp::Url::from_file_path(path).unwrap()
8366 );
8367 assert_eq!(
8368 params.text_document_position.position,
8369 lsp::Position::new(position.row, position.column)
8370 );
8371 Some(lsp::CompletionResponse::Array(
8372 completions
8373 .iter()
8374 .map(|(range, new_text)| lsp::CompletionItem {
8375 label: new_text.to_string(),
8376 text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
8377 range: lsp::Range::new(
8378 lsp::Position::new(range.start.row, range.start.column),
8379 lsp::Position::new(range.start.row, range.start.column),
8380 ),
8381 new_text: new_text.to_string(),
8382 })),
8383 ..Default::default()
8384 })
8385 .collect(),
8386 ))
8387 })
8388 .next()
8389 .await;
8390 }
8391
8392 async fn handle_resolve_completion_request(
8393 fake: &mut FakeLanguageServer,
8394 edit: Option<(Range<Point>, &'static str)>,
8395 ) {
8396 fake.handle_request::<lsp::request::ResolveCompletionItem, _>(move |_, _| {
8397 lsp::CompletionItem {
8398 additional_text_edits: edit.clone().map(|(range, new_text)| {
8399 vec![lsp::TextEdit::new(
8400 lsp::Range::new(
8401 lsp::Position::new(range.start.row, range.start.column),
8402 lsp::Position::new(range.end.row, range.end.column),
8403 ),
8404 new_text.to_string(),
8405 )]
8406 }),
8407 ..Default::default()
8408 }
8409 })
8410 .next()
8411 .await;
8412 }
8413 }
8414
8415 #[gpui::test]
8416 async fn test_toggle_comment(mut cx: gpui::TestAppContext) {
8417 let settings = cx.read(Settings::test);
8418 let language = Arc::new(Language::new(
8419 LanguageConfig {
8420 line_comment: Some("// ".to_string()),
8421 ..Default::default()
8422 },
8423 Some(tree_sitter_rust::language()),
8424 ));
8425
8426 let text = "
8427 fn a() {
8428 //b();
8429 // c();
8430 // d();
8431 }
8432 "
8433 .unindent();
8434
8435 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8436 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8437 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8438
8439 view.update(&mut cx, |editor, cx| {
8440 // If multiple selections intersect a line, the line is only
8441 // toggled once.
8442 editor.select_display_ranges(
8443 &[
8444 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
8445 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
8446 ],
8447 cx,
8448 );
8449 editor.toggle_comments(&ToggleComments, cx);
8450 assert_eq!(
8451 editor.text(cx),
8452 "
8453 fn a() {
8454 b();
8455 c();
8456 d();
8457 }
8458 "
8459 .unindent()
8460 );
8461
8462 // The comment prefix is inserted at the same column for every line
8463 // in a selection.
8464 editor.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx);
8465 editor.toggle_comments(&ToggleComments, cx);
8466 assert_eq!(
8467 editor.text(cx),
8468 "
8469 fn a() {
8470 // b();
8471 // c();
8472 // d();
8473 }
8474 "
8475 .unindent()
8476 );
8477
8478 // If a selection ends at the beginning of a line, that line is not toggled.
8479 editor.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx);
8480 editor.toggle_comments(&ToggleComments, cx);
8481 assert_eq!(
8482 editor.text(cx),
8483 "
8484 fn a() {
8485 // b();
8486 c();
8487 // d();
8488 }
8489 "
8490 .unindent()
8491 );
8492 });
8493 }
8494
8495 #[gpui::test]
8496 fn test_editing_disjoint_excerpts(cx: &mut gpui::MutableAppContext) {
8497 let settings = Settings::test(cx);
8498 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8499 let multibuffer = cx.add_model(|cx| {
8500 let mut multibuffer = MultiBuffer::new(0);
8501 multibuffer.push_excerpts(
8502 buffer.clone(),
8503 [
8504 Point::new(0, 0)..Point::new(0, 4),
8505 Point::new(1, 0)..Point::new(1, 4),
8506 ],
8507 cx,
8508 );
8509 multibuffer
8510 });
8511
8512 assert_eq!(multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb");
8513
8514 let (_, view) = cx.add_window(Default::default(), |cx| {
8515 build_editor(multibuffer, settings, cx)
8516 });
8517 view.update(cx, |view, cx| {
8518 assert_eq!(view.text(cx), "aaaa\nbbbb");
8519 view.select_ranges(
8520 [
8521 Point::new(0, 0)..Point::new(0, 0),
8522 Point::new(1, 0)..Point::new(1, 0),
8523 ],
8524 None,
8525 cx,
8526 );
8527
8528 view.handle_input(&Input("X".to_string()), cx);
8529 assert_eq!(view.text(cx), "Xaaaa\nXbbbb");
8530 assert_eq!(
8531 view.selected_ranges(cx),
8532 [
8533 Point::new(0, 1)..Point::new(0, 1),
8534 Point::new(1, 1)..Point::new(1, 1),
8535 ]
8536 )
8537 });
8538 }
8539
8540 #[gpui::test]
8541 fn test_editing_overlapping_excerpts(cx: &mut gpui::MutableAppContext) {
8542 let settings = Settings::test(cx);
8543 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8544 let multibuffer = cx.add_model(|cx| {
8545 let mut multibuffer = MultiBuffer::new(0);
8546 multibuffer.push_excerpts(
8547 buffer,
8548 [
8549 Point::new(0, 0)..Point::new(1, 4),
8550 Point::new(1, 0)..Point::new(2, 4),
8551 ],
8552 cx,
8553 );
8554 multibuffer
8555 });
8556
8557 assert_eq!(
8558 multibuffer.read(cx).read(cx).text(),
8559 "aaaa\nbbbb\nbbbb\ncccc"
8560 );
8561
8562 let (_, view) = cx.add_window(Default::default(), |cx| {
8563 build_editor(multibuffer, settings, cx)
8564 });
8565 view.update(cx, |view, cx| {
8566 view.select_ranges(
8567 [
8568 Point::new(1, 1)..Point::new(1, 1),
8569 Point::new(2, 3)..Point::new(2, 3),
8570 ],
8571 None,
8572 cx,
8573 );
8574
8575 view.handle_input(&Input("X".to_string()), cx);
8576 assert_eq!(view.text(cx), "aaaa\nbXbbXb\nbXbbXb\ncccc");
8577 assert_eq!(
8578 view.selected_ranges(cx),
8579 [
8580 Point::new(1, 2)..Point::new(1, 2),
8581 Point::new(2, 5)..Point::new(2, 5),
8582 ]
8583 );
8584
8585 view.newline(&Newline, cx);
8586 assert_eq!(view.text(cx), "aaaa\nbX\nbbX\nb\nbX\nbbX\nb\ncccc");
8587 assert_eq!(
8588 view.selected_ranges(cx),
8589 [
8590 Point::new(2, 0)..Point::new(2, 0),
8591 Point::new(6, 0)..Point::new(6, 0),
8592 ]
8593 );
8594 });
8595 }
8596
8597 #[gpui::test]
8598 fn test_refresh_selections(cx: &mut gpui::MutableAppContext) {
8599 let settings = Settings::test(cx);
8600 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8601 let mut excerpt1_id = None;
8602 let multibuffer = cx.add_model(|cx| {
8603 let mut multibuffer = MultiBuffer::new(0);
8604 excerpt1_id = multibuffer
8605 .push_excerpts(
8606 buffer.clone(),
8607 [
8608 Point::new(0, 0)..Point::new(1, 4),
8609 Point::new(1, 0)..Point::new(2, 4),
8610 ],
8611 cx,
8612 )
8613 .into_iter()
8614 .next();
8615 multibuffer
8616 });
8617 assert_eq!(
8618 multibuffer.read(cx).read(cx).text(),
8619 "aaaa\nbbbb\nbbbb\ncccc"
8620 );
8621 let (_, editor) = cx.add_window(Default::default(), |cx| {
8622 let mut editor = build_editor(multibuffer.clone(), settings, cx);
8623 editor.select_ranges(
8624 [
8625 Point::new(1, 3)..Point::new(1, 3),
8626 Point::new(2, 1)..Point::new(2, 1),
8627 ],
8628 None,
8629 cx,
8630 );
8631 editor
8632 });
8633
8634 // Refreshing selections is a no-op when excerpts haven't changed.
8635 editor.update(cx, |editor, cx| {
8636 editor.refresh_selections(cx);
8637 assert_eq!(
8638 editor.selected_ranges(cx),
8639 [
8640 Point::new(1, 3)..Point::new(1, 3),
8641 Point::new(2, 1)..Point::new(2, 1),
8642 ]
8643 );
8644 });
8645
8646 multibuffer.update(cx, |multibuffer, cx| {
8647 multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx);
8648 });
8649 editor.update(cx, |editor, cx| {
8650 // Removing an excerpt causes the first selection to become degenerate.
8651 assert_eq!(
8652 editor.selected_ranges(cx),
8653 [
8654 Point::new(0, 0)..Point::new(0, 0),
8655 Point::new(0, 1)..Point::new(0, 1)
8656 ]
8657 );
8658
8659 // Refreshing selections will relocate the first selection to the original buffer
8660 // location.
8661 editor.refresh_selections(cx);
8662 assert_eq!(
8663 editor.selected_ranges(cx),
8664 [
8665 Point::new(0, 1)..Point::new(0, 1),
8666 Point::new(0, 3)..Point::new(0, 3)
8667 ]
8668 );
8669 });
8670 }
8671
8672 #[gpui::test]
8673 async fn test_extra_newline_insertion(mut cx: gpui::TestAppContext) {
8674 let settings = cx.read(Settings::test);
8675 let language = Arc::new(Language::new(
8676 LanguageConfig {
8677 brackets: vec![
8678 BracketPair {
8679 start: "{".to_string(),
8680 end: "}".to_string(),
8681 close: true,
8682 newline: true,
8683 },
8684 BracketPair {
8685 start: "/* ".to_string(),
8686 end: " */".to_string(),
8687 close: true,
8688 newline: true,
8689 },
8690 ],
8691 ..Default::default()
8692 },
8693 Some(tree_sitter_rust::language()),
8694 ));
8695
8696 let text = concat!(
8697 "{ }\n", // Suppress rustfmt
8698 " x\n", //
8699 " /* */\n", //
8700 "x\n", //
8701 "{{} }\n", //
8702 );
8703
8704 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8705 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8706 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8707 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
8708 .await;
8709
8710 view.update(&mut cx, |view, cx| {
8711 view.select_display_ranges(
8712 &[
8713 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
8714 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
8715 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
8716 ],
8717 cx,
8718 );
8719 view.newline(&Newline, cx);
8720
8721 assert_eq!(
8722 view.buffer().read(cx).read(cx).text(),
8723 concat!(
8724 "{ \n", // Suppress rustfmt
8725 "\n", //
8726 "}\n", //
8727 " x\n", //
8728 " /* \n", //
8729 " \n", //
8730 " */\n", //
8731 "x\n", //
8732 "{{} \n", //
8733 "}\n", //
8734 )
8735 );
8736 });
8737 }
8738
8739 #[gpui::test]
8740 fn test_highlighted_ranges(cx: &mut gpui::MutableAppContext) {
8741 let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
8742 let settings = Settings::test(&cx);
8743 let (_, editor) = cx.add_window(Default::default(), |cx| {
8744 build_editor(buffer.clone(), settings, cx)
8745 });
8746
8747 editor.update(cx, |editor, cx| {
8748 struct Type1;
8749 struct Type2;
8750
8751 let buffer = buffer.read(cx).snapshot(cx);
8752
8753 let anchor_range = |range: Range<Point>| {
8754 buffer.anchor_after(range.start)..buffer.anchor_after(range.end)
8755 };
8756
8757 editor.highlight_ranges::<Type1>(
8758 vec![
8759 anchor_range(Point::new(2, 1)..Point::new(2, 3)),
8760 anchor_range(Point::new(4, 2)..Point::new(4, 4)),
8761 anchor_range(Point::new(6, 3)..Point::new(6, 5)),
8762 anchor_range(Point::new(8, 4)..Point::new(8, 6)),
8763 ],
8764 Color::red(),
8765 cx,
8766 );
8767 editor.highlight_ranges::<Type2>(
8768 vec![
8769 anchor_range(Point::new(3, 2)..Point::new(3, 5)),
8770 anchor_range(Point::new(5, 3)..Point::new(5, 6)),
8771 anchor_range(Point::new(7, 4)..Point::new(7, 7)),
8772 anchor_range(Point::new(9, 5)..Point::new(9, 8)),
8773 ],
8774 Color::green(),
8775 cx,
8776 );
8777
8778 let snapshot = editor.snapshot(cx);
8779 let mut highlighted_ranges = editor.highlighted_ranges_in_range(
8780 anchor_range(Point::new(3, 4)..Point::new(7, 4)),
8781 &snapshot,
8782 );
8783 // Enforce a consistent ordering based on color without relying on the ordering of the
8784 // highlight's `TypeId` which is non-deterministic.
8785 highlighted_ranges.sort_unstable_by_key(|(_, color)| *color);
8786 assert_eq!(
8787 highlighted_ranges,
8788 &[
8789 (
8790 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 5),
8791 Color::green(),
8792 ),
8793 (
8794 DisplayPoint::new(5, 3)..DisplayPoint::new(5, 6),
8795 Color::green(),
8796 ),
8797 (
8798 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 4),
8799 Color::red(),
8800 ),
8801 (
8802 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
8803 Color::red(),
8804 ),
8805 ]
8806 );
8807 assert_eq!(
8808 editor.highlighted_ranges_in_range(
8809 anchor_range(Point::new(5, 6)..Point::new(6, 4)),
8810 &snapshot,
8811 ),
8812 &[(
8813 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
8814 Color::red(),
8815 )]
8816 );
8817 });
8818 }
8819
8820 #[test]
8821 fn test_combine_syntax_and_fuzzy_match_highlights() {
8822 let string = "abcdefghijklmnop";
8823 let default = HighlightStyle::default();
8824 let syntax_ranges = [
8825 (
8826 0..3,
8827 HighlightStyle {
8828 color: Color::red(),
8829 ..default
8830 },
8831 ),
8832 (
8833 4..8,
8834 HighlightStyle {
8835 color: Color::green(),
8836 ..default
8837 },
8838 ),
8839 ];
8840 let match_indices = [4, 6, 7, 8];
8841 assert_eq!(
8842 combine_syntax_and_fuzzy_match_highlights(
8843 &string,
8844 default,
8845 syntax_ranges.into_iter(),
8846 &match_indices,
8847 ),
8848 &[
8849 (
8850 0..3,
8851 HighlightStyle {
8852 color: Color::red(),
8853 ..default
8854 },
8855 ),
8856 (
8857 4..5,
8858 HighlightStyle {
8859 color: Color::green(),
8860 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
8861 ..default
8862 },
8863 ),
8864 (
8865 5..6,
8866 HighlightStyle {
8867 color: Color::green(),
8868 ..default
8869 },
8870 ),
8871 (
8872 6..8,
8873 HighlightStyle {
8874 color: Color::green(),
8875 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
8876 ..default
8877 },
8878 ),
8879 (
8880 8..9,
8881 HighlightStyle {
8882 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
8883 ..default
8884 },
8885 ),
8886 ]
8887 );
8888 }
8889
8890 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
8891 let point = DisplayPoint::new(row as u32, column as u32);
8892 point..point
8893 }
8894
8895 fn build_editor(
8896 buffer: ModelHandle<MultiBuffer>,
8897 settings: Settings,
8898 cx: &mut ViewContext<Editor>,
8899 ) -> Editor {
8900 let settings = watch::channel_with(settings);
8901 Editor::new(EditorMode::Full, buffer, None, settings.1, None, cx)
8902 }
8903}
8904
8905trait RangeExt<T> {
8906 fn sorted(&self) -> Range<T>;
8907 fn to_inclusive(&self) -> RangeInclusive<T>;
8908}
8909
8910impl<T: Ord + Clone> RangeExt<T> for Range<T> {
8911 fn sorted(&self) -> Self {
8912 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
8913 }
8914
8915 fn to_inclusive(&self) -> RangeInclusive<T> {
8916 self.start.clone()..=self.end.clone()
8917 }
8918}