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 BracketPair, Buffer, CodeAction, CodeLabel, Completion, Diagnostic, DiagnosticSeverity,
36 Language, OffsetRangeExt, 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 background_highlights: 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 background_highlights: 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 project = workspace.project();
944 if project.read(cx).is_remote() {
945 cx.propagate_action();
946 } else if let Some(buffer) = project
947 .update(cx, |project, cx| project.create_buffer(cx))
948 .log_err()
949 {
950 workspace.open_item(BufferItemHandle(buffer), cx);
951 }
952 }
953
954 pub fn replica_id(&self, cx: &AppContext) -> ReplicaId {
955 self.buffer.read(cx).replica_id()
956 }
957
958 pub fn buffer(&self) -> &ModelHandle<MultiBuffer> {
959 &self.buffer
960 }
961
962 pub fn title(&self, cx: &AppContext) -> String {
963 self.buffer().read(cx).title(cx)
964 }
965
966 pub fn snapshot(&mut self, cx: &mut MutableAppContext) -> EditorSnapshot {
967 EditorSnapshot {
968 mode: self.mode,
969 display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
970 scroll_position: self.scroll_position,
971 scroll_top_anchor: self.scroll_top_anchor.clone(),
972 placeholder_text: self.placeholder_text.clone(),
973 is_focused: self
974 .handle
975 .upgrade(cx)
976 .map_or(false, |handle| handle.is_focused(cx)),
977 }
978 }
979
980 pub fn language<'a>(&self, cx: &'a AppContext) -> Option<&'a Arc<Language>> {
981 self.buffer.read(cx).language(cx)
982 }
983
984 fn style(&self, cx: &AppContext) -> EditorStyle {
985 build_style(&*self.settings.borrow(), self.get_field_editor_theme, cx)
986 }
987
988 pub fn set_placeholder_text(
989 &mut self,
990 placeholder_text: impl Into<Arc<str>>,
991 cx: &mut ViewContext<Self>,
992 ) {
993 self.placeholder_text = Some(placeholder_text.into());
994 cx.notify();
995 }
996
997 pub fn set_vertical_scroll_margin(&mut self, margin_rows: usize, cx: &mut ViewContext<Self>) {
998 self.vertical_scroll_margin = margin_rows as f32;
999 cx.notify();
1000 }
1001
1002 pub fn set_scroll_position(&mut self, scroll_position: Vector2F, cx: &mut ViewContext<Self>) {
1003 let map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1004
1005 if scroll_position.y() == 0. {
1006 self.scroll_top_anchor = None;
1007 self.scroll_position = scroll_position;
1008 } else {
1009 let scroll_top_buffer_offset =
1010 DisplayPoint::new(scroll_position.y() as u32, 0).to_offset(&map, Bias::Right);
1011 let anchor = map
1012 .buffer_snapshot
1013 .anchor_at(scroll_top_buffer_offset, Bias::Right);
1014 self.scroll_position = vec2f(
1015 scroll_position.x(),
1016 scroll_position.y() - anchor.to_display_point(&map).row() as f32,
1017 );
1018 self.scroll_top_anchor = Some(anchor);
1019 }
1020
1021 cx.notify();
1022 }
1023
1024 pub fn scroll_position(&self, cx: &mut ViewContext<Self>) -> Vector2F {
1025 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1026 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor)
1027 }
1028
1029 pub fn clamp_scroll_left(&mut self, max: f32) -> bool {
1030 if max < self.scroll_position.x() {
1031 self.scroll_position.set_x(max);
1032 true
1033 } else {
1034 false
1035 }
1036 }
1037
1038 pub fn autoscroll_vertically(
1039 &mut self,
1040 viewport_height: f32,
1041 line_height: f32,
1042 cx: &mut ViewContext<Self>,
1043 ) -> bool {
1044 let visible_lines = viewport_height / line_height;
1045 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1046 let mut scroll_position =
1047 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor);
1048 let max_scroll_top = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
1049 (display_map.max_point().row() as f32 - visible_lines + 1.).max(0.)
1050 } else {
1051 display_map.max_point().row().saturating_sub(1) as f32
1052 };
1053 if scroll_position.y() > max_scroll_top {
1054 scroll_position.set_y(max_scroll_top);
1055 self.set_scroll_position(scroll_position, cx);
1056 }
1057
1058 let autoscroll = if let Some(autoscroll) = self.autoscroll_request.take() {
1059 autoscroll
1060 } else {
1061 return false;
1062 };
1063
1064 let first_cursor_top;
1065 let last_cursor_bottom;
1066 if let Some(highlighted_rows) = &self.highlighted_rows {
1067 first_cursor_top = highlighted_rows.start as f32;
1068 last_cursor_bottom = first_cursor_top + 1.;
1069 } else if autoscroll == Autoscroll::Newest {
1070 let newest_selection =
1071 self.newest_selection_with_snapshot::<Point>(&display_map.buffer_snapshot);
1072 first_cursor_top = newest_selection.head().to_display_point(&display_map).row() as f32;
1073 last_cursor_bottom = first_cursor_top + 1.;
1074 } else {
1075 let selections = self.local_selections::<Point>(cx);
1076 first_cursor_top = selections
1077 .first()
1078 .unwrap()
1079 .head()
1080 .to_display_point(&display_map)
1081 .row() as f32;
1082 last_cursor_bottom = selections
1083 .last()
1084 .unwrap()
1085 .head()
1086 .to_display_point(&display_map)
1087 .row() as f32
1088 + 1.0;
1089 }
1090
1091 let margin = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
1092 0.
1093 } else {
1094 ((visible_lines - (last_cursor_bottom - first_cursor_top)) / 2.0).floor()
1095 };
1096 if margin < 0.0 {
1097 return false;
1098 }
1099
1100 match autoscroll {
1101 Autoscroll::Fit | Autoscroll::Newest => {
1102 let margin = margin.min(self.vertical_scroll_margin);
1103 let target_top = (first_cursor_top - margin).max(0.0);
1104 let target_bottom = last_cursor_bottom + margin;
1105 let start_row = scroll_position.y();
1106 let end_row = start_row + visible_lines;
1107
1108 if target_top < start_row {
1109 scroll_position.set_y(target_top);
1110 self.set_scroll_position(scroll_position, cx);
1111 } else if target_bottom >= end_row {
1112 scroll_position.set_y(target_bottom - visible_lines);
1113 self.set_scroll_position(scroll_position, cx);
1114 }
1115 }
1116 Autoscroll::Center => {
1117 scroll_position.set_y((first_cursor_top - margin).max(0.0));
1118 self.set_scroll_position(scroll_position, cx);
1119 }
1120 }
1121
1122 true
1123 }
1124
1125 pub fn autoscroll_horizontally(
1126 &mut self,
1127 start_row: u32,
1128 viewport_width: f32,
1129 scroll_width: f32,
1130 max_glyph_width: f32,
1131 layouts: &[text_layout::Line],
1132 cx: &mut ViewContext<Self>,
1133 ) -> bool {
1134 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1135 let selections = self.local_selections::<Point>(cx);
1136
1137 let mut target_left;
1138 let mut target_right;
1139
1140 if self.highlighted_rows.is_some() {
1141 target_left = 0.0_f32;
1142 target_right = 0.0_f32;
1143 } else {
1144 target_left = std::f32::INFINITY;
1145 target_right = 0.0_f32;
1146 for selection in selections {
1147 let head = selection.head().to_display_point(&display_map);
1148 if head.row() >= start_row && head.row() < start_row + layouts.len() as u32 {
1149 let start_column = head.column().saturating_sub(3);
1150 let end_column = cmp::min(display_map.line_len(head.row()), head.column() + 3);
1151 target_left = target_left.min(
1152 layouts[(head.row() - start_row) as usize]
1153 .x_for_index(start_column as usize),
1154 );
1155 target_right = target_right.max(
1156 layouts[(head.row() - start_row) as usize].x_for_index(end_column as usize)
1157 + max_glyph_width,
1158 );
1159 }
1160 }
1161 }
1162
1163 target_right = target_right.min(scroll_width);
1164
1165 if target_right - target_left > viewport_width {
1166 return false;
1167 }
1168
1169 let scroll_left = self.scroll_position.x() * max_glyph_width;
1170 let scroll_right = scroll_left + viewport_width;
1171
1172 if target_left < scroll_left {
1173 self.scroll_position.set_x(target_left / max_glyph_width);
1174 true
1175 } else if target_right > scroll_right {
1176 self.scroll_position
1177 .set_x((target_right - viewport_width) / max_glyph_width);
1178 true
1179 } else {
1180 false
1181 }
1182 }
1183
1184 fn select(&mut self, Select(phase): &Select, cx: &mut ViewContext<Self>) {
1185 self.hide_context_menu(cx);
1186
1187 match phase {
1188 SelectPhase::Begin {
1189 position,
1190 add,
1191 click_count,
1192 } => self.begin_selection(*position, *add, *click_count, cx),
1193 SelectPhase::BeginColumnar {
1194 position,
1195 overshoot,
1196 } => self.begin_columnar_selection(*position, *overshoot, cx),
1197 SelectPhase::Extend {
1198 position,
1199 click_count,
1200 } => self.extend_selection(*position, *click_count, cx),
1201 SelectPhase::Update {
1202 position,
1203 overshoot,
1204 scroll_position,
1205 } => self.update_selection(*position, *overshoot, *scroll_position, cx),
1206 SelectPhase::End => self.end_selection(cx),
1207 }
1208 }
1209
1210 fn extend_selection(
1211 &mut self,
1212 position: DisplayPoint,
1213 click_count: usize,
1214 cx: &mut ViewContext<Self>,
1215 ) {
1216 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1217 let tail = self
1218 .newest_selection_with_snapshot::<usize>(&display_map.buffer_snapshot)
1219 .tail();
1220 self.begin_selection(position, false, click_count, cx);
1221
1222 let position = position.to_offset(&display_map, Bias::Left);
1223 let tail_anchor = display_map.buffer_snapshot.anchor_before(tail);
1224 let mut pending = self.pending_selection.clone().unwrap();
1225
1226 if position >= tail {
1227 pending.selection.start = tail_anchor.clone();
1228 } else {
1229 pending.selection.end = tail_anchor.clone();
1230 pending.selection.reversed = true;
1231 }
1232
1233 match &mut pending.mode {
1234 SelectMode::Word(range) | SelectMode::Line(range) => {
1235 *range = tail_anchor.clone()..tail_anchor
1236 }
1237 _ => {}
1238 }
1239
1240 self.set_selections(self.selections.clone(), Some(pending), cx);
1241 }
1242
1243 fn begin_selection(
1244 &mut self,
1245 position: DisplayPoint,
1246 add: bool,
1247 click_count: usize,
1248 cx: &mut ViewContext<Self>,
1249 ) {
1250 if !self.focused {
1251 cx.focus_self();
1252 cx.emit(Event::Activate);
1253 }
1254
1255 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1256 let buffer = &display_map.buffer_snapshot;
1257 let newest_selection = self.newest_anchor_selection().clone();
1258
1259 let start;
1260 let end;
1261 let mode;
1262 match click_count {
1263 1 => {
1264 start = buffer.anchor_before(position.to_point(&display_map));
1265 end = start.clone();
1266 mode = SelectMode::Character;
1267 }
1268 2 => {
1269 let range = movement::surrounding_word(&display_map, position);
1270 start = buffer.anchor_before(range.start.to_point(&display_map));
1271 end = buffer.anchor_before(range.end.to_point(&display_map));
1272 mode = SelectMode::Word(start.clone()..end.clone());
1273 }
1274 3 => {
1275 let position = display_map
1276 .clip_point(position, Bias::Left)
1277 .to_point(&display_map);
1278 let line_start = display_map.prev_line_boundary(position).0;
1279 let next_line_start = buffer.clip_point(
1280 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1281 Bias::Left,
1282 );
1283 start = buffer.anchor_before(line_start);
1284 end = buffer.anchor_before(next_line_start);
1285 mode = SelectMode::Line(start.clone()..end.clone());
1286 }
1287 _ => {
1288 start = buffer.anchor_before(0);
1289 end = buffer.anchor_before(buffer.len());
1290 mode = SelectMode::All;
1291 }
1292 }
1293
1294 self.push_to_nav_history(newest_selection.head(), Some(end.to_point(&buffer)), cx);
1295
1296 let selection = Selection {
1297 id: post_inc(&mut self.next_selection_id),
1298 start,
1299 end,
1300 reversed: false,
1301 goal: SelectionGoal::None,
1302 };
1303
1304 let mut selections;
1305 if add {
1306 selections = self.selections.clone();
1307 // Remove the newest selection if it was added due to a previous mouse up
1308 // within this multi-click.
1309 if click_count > 1 {
1310 selections = self
1311 .selections
1312 .iter()
1313 .filter(|selection| selection.id != newest_selection.id)
1314 .cloned()
1315 .collect();
1316 }
1317 } else {
1318 selections = Arc::from([]);
1319 }
1320 self.set_selections(selections, Some(PendingSelection { selection, mode }), cx);
1321
1322 cx.notify();
1323 }
1324
1325 fn begin_columnar_selection(
1326 &mut self,
1327 position: DisplayPoint,
1328 overshoot: u32,
1329 cx: &mut ViewContext<Self>,
1330 ) {
1331 if !self.focused {
1332 cx.focus_self();
1333 cx.emit(Event::Activate);
1334 }
1335
1336 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1337 let tail = self
1338 .newest_selection_with_snapshot::<Point>(&display_map.buffer_snapshot)
1339 .tail();
1340 self.columnar_selection_tail = Some(display_map.buffer_snapshot.anchor_before(tail));
1341
1342 self.select_columns(
1343 tail.to_display_point(&display_map),
1344 position,
1345 overshoot,
1346 &display_map,
1347 cx,
1348 );
1349 }
1350
1351 fn update_selection(
1352 &mut self,
1353 position: DisplayPoint,
1354 overshoot: u32,
1355 scroll_position: Vector2F,
1356 cx: &mut ViewContext<Self>,
1357 ) {
1358 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1359
1360 if let Some(tail) = self.columnar_selection_tail.as_ref() {
1361 let tail = tail.to_display_point(&display_map);
1362 self.select_columns(tail, position, overshoot, &display_map, cx);
1363 } else if let Some(mut pending) = self.pending_selection.clone() {
1364 let buffer = self.buffer.read(cx).snapshot(cx);
1365 let head;
1366 let tail;
1367 match &pending.mode {
1368 SelectMode::Character => {
1369 head = position.to_point(&display_map);
1370 tail = pending.selection.tail().to_point(&buffer);
1371 }
1372 SelectMode::Word(original_range) => {
1373 let original_display_range = original_range.start.to_display_point(&display_map)
1374 ..original_range.end.to_display_point(&display_map);
1375 let original_buffer_range = original_display_range.start.to_point(&display_map)
1376 ..original_display_range.end.to_point(&display_map);
1377 if movement::is_inside_word(&display_map, position)
1378 || original_display_range.contains(&position)
1379 {
1380 let word_range = movement::surrounding_word(&display_map, position);
1381 if word_range.start < original_display_range.start {
1382 head = word_range.start.to_point(&display_map);
1383 } else {
1384 head = word_range.end.to_point(&display_map);
1385 }
1386 } else {
1387 head = position.to_point(&display_map);
1388 }
1389
1390 if head <= original_buffer_range.start {
1391 tail = original_buffer_range.end;
1392 } else {
1393 tail = original_buffer_range.start;
1394 }
1395 }
1396 SelectMode::Line(original_range) => {
1397 let original_range = original_range.to_point(&display_map.buffer_snapshot);
1398
1399 let position = display_map
1400 .clip_point(position, Bias::Left)
1401 .to_point(&display_map);
1402 let line_start = display_map.prev_line_boundary(position).0;
1403 let next_line_start = buffer.clip_point(
1404 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1405 Bias::Left,
1406 );
1407
1408 if line_start < original_range.start {
1409 head = line_start
1410 } else {
1411 head = next_line_start
1412 }
1413
1414 if head <= original_range.start {
1415 tail = original_range.end;
1416 } else {
1417 tail = original_range.start;
1418 }
1419 }
1420 SelectMode::All => {
1421 return;
1422 }
1423 };
1424
1425 if head < tail {
1426 pending.selection.start = buffer.anchor_before(head);
1427 pending.selection.end = buffer.anchor_before(tail);
1428 pending.selection.reversed = true;
1429 } else {
1430 pending.selection.start = buffer.anchor_before(tail);
1431 pending.selection.end = buffer.anchor_before(head);
1432 pending.selection.reversed = false;
1433 }
1434 self.set_selections(self.selections.clone(), Some(pending), cx);
1435 } else {
1436 log::error!("update_selection dispatched with no pending selection");
1437 return;
1438 }
1439
1440 self.set_scroll_position(scroll_position, cx);
1441 cx.notify();
1442 }
1443
1444 fn end_selection(&mut self, cx: &mut ViewContext<Self>) {
1445 self.columnar_selection_tail.take();
1446 if self.pending_selection.is_some() {
1447 let selections = self.local_selections::<usize>(cx);
1448 self.update_selections(selections, None, cx);
1449 }
1450 }
1451
1452 fn select_columns(
1453 &mut self,
1454 tail: DisplayPoint,
1455 head: DisplayPoint,
1456 overshoot: u32,
1457 display_map: &DisplaySnapshot,
1458 cx: &mut ViewContext<Self>,
1459 ) {
1460 let start_row = cmp::min(tail.row(), head.row());
1461 let end_row = cmp::max(tail.row(), head.row());
1462 let start_column = cmp::min(tail.column(), head.column() + overshoot);
1463 let end_column = cmp::max(tail.column(), head.column() + overshoot);
1464 let reversed = start_column < tail.column();
1465
1466 let selections = (start_row..=end_row)
1467 .filter_map(|row| {
1468 if start_column <= display_map.line_len(row) && !display_map.is_block_line(row) {
1469 let start = display_map
1470 .clip_point(DisplayPoint::new(row, start_column), Bias::Left)
1471 .to_point(&display_map);
1472 let end = display_map
1473 .clip_point(DisplayPoint::new(row, end_column), Bias::Right)
1474 .to_point(&display_map);
1475 Some(Selection {
1476 id: post_inc(&mut self.next_selection_id),
1477 start,
1478 end,
1479 reversed,
1480 goal: SelectionGoal::None,
1481 })
1482 } else {
1483 None
1484 }
1485 })
1486 .collect::<Vec<_>>();
1487
1488 self.update_selections(selections, None, cx);
1489 cx.notify();
1490 }
1491
1492 pub fn is_selecting(&self) -> bool {
1493 self.pending_selection.is_some() || self.columnar_selection_tail.is_some()
1494 }
1495
1496 pub fn cancel(&mut self, _: &Cancel, cx: &mut ViewContext<Self>) {
1497 if self.take_rename(cx).is_some() {
1498 return;
1499 }
1500
1501 if self.hide_context_menu(cx).is_some() {
1502 return;
1503 }
1504
1505 if self.snippet_stack.pop().is_some() {
1506 return;
1507 }
1508
1509 if self.mode != EditorMode::Full {
1510 cx.propagate_action();
1511 return;
1512 }
1513
1514 if self.active_diagnostics.is_some() {
1515 self.dismiss_diagnostics(cx);
1516 } else if let Some(pending) = self.pending_selection.clone() {
1517 let mut selections = self.selections.clone();
1518 if selections.is_empty() {
1519 selections = Arc::from([pending.selection]);
1520 }
1521 self.set_selections(selections, None, cx);
1522 self.request_autoscroll(Autoscroll::Fit, cx);
1523 } else {
1524 let mut oldest_selection = self.oldest_selection::<usize>(&cx);
1525 if self.selection_count() == 1 {
1526 if oldest_selection.is_empty() {
1527 cx.propagate_action();
1528 return;
1529 }
1530
1531 oldest_selection.start = oldest_selection.head().clone();
1532 oldest_selection.end = oldest_selection.head().clone();
1533 }
1534 self.update_selections(vec![oldest_selection], Some(Autoscroll::Fit), cx);
1535 }
1536 }
1537
1538 #[cfg(any(test, feature = "test-support"))]
1539 pub fn selected_ranges<D: TextDimension + Ord + Sub<D, Output = D>>(
1540 &self,
1541 cx: &mut MutableAppContext,
1542 ) -> Vec<Range<D>> {
1543 self.local_selections::<D>(cx)
1544 .iter()
1545 .map(|s| {
1546 if s.reversed {
1547 s.end.clone()..s.start.clone()
1548 } else {
1549 s.start.clone()..s.end.clone()
1550 }
1551 })
1552 .collect()
1553 }
1554
1555 #[cfg(any(test, feature = "test-support"))]
1556 pub fn selected_display_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
1557 let display_map = self
1558 .display_map
1559 .update(cx, |display_map, cx| display_map.snapshot(cx));
1560 self.selections
1561 .iter()
1562 .chain(
1563 self.pending_selection
1564 .as_ref()
1565 .map(|pending| &pending.selection),
1566 )
1567 .map(|s| {
1568 if s.reversed {
1569 s.end.to_display_point(&display_map)..s.start.to_display_point(&display_map)
1570 } else {
1571 s.start.to_display_point(&display_map)..s.end.to_display_point(&display_map)
1572 }
1573 })
1574 .collect()
1575 }
1576
1577 pub fn select_ranges<I, T>(
1578 &mut self,
1579 ranges: I,
1580 autoscroll: Option<Autoscroll>,
1581 cx: &mut ViewContext<Self>,
1582 ) where
1583 I: IntoIterator<Item = Range<T>>,
1584 T: ToOffset,
1585 {
1586 let buffer = self.buffer.read(cx).snapshot(cx);
1587 let selections = ranges
1588 .into_iter()
1589 .map(|range| {
1590 let mut start = range.start.to_offset(&buffer);
1591 let mut end = range.end.to_offset(&buffer);
1592 let reversed = if start > end {
1593 mem::swap(&mut start, &mut end);
1594 true
1595 } else {
1596 false
1597 };
1598 Selection {
1599 id: post_inc(&mut self.next_selection_id),
1600 start,
1601 end,
1602 reversed,
1603 goal: SelectionGoal::None,
1604 }
1605 })
1606 .collect::<Vec<_>>();
1607 self.update_selections(selections, autoscroll, cx);
1608 }
1609
1610 #[cfg(any(test, feature = "test-support"))]
1611 pub fn select_display_ranges<'a, T>(&mut self, ranges: T, cx: &mut ViewContext<Self>)
1612 where
1613 T: IntoIterator<Item = &'a Range<DisplayPoint>>,
1614 {
1615 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1616 let selections = ranges
1617 .into_iter()
1618 .map(|range| {
1619 let mut start = range.start;
1620 let mut end = range.end;
1621 let reversed = if start > end {
1622 mem::swap(&mut start, &mut end);
1623 true
1624 } else {
1625 false
1626 };
1627 Selection {
1628 id: post_inc(&mut self.next_selection_id),
1629 start: start.to_point(&display_map),
1630 end: end.to_point(&display_map),
1631 reversed,
1632 goal: SelectionGoal::None,
1633 }
1634 })
1635 .collect();
1636 self.update_selections(selections, None, cx);
1637 }
1638
1639 pub fn handle_input(&mut self, action: &Input, cx: &mut ViewContext<Self>) {
1640 let text = action.0.as_ref();
1641 if !self.skip_autoclose_end(text, cx) {
1642 self.start_transaction(cx);
1643 if !self.surround_with_bracket_pair(text, cx) {
1644 self.insert(text, cx);
1645 self.autoclose_bracket_pairs(cx);
1646 }
1647 self.end_transaction(cx);
1648 self.trigger_completion_on_input(text, cx);
1649 }
1650 }
1651
1652 pub fn newline(&mut self, _: &Newline, cx: &mut ViewContext<Self>) {
1653 self.start_transaction(cx);
1654 let mut old_selections = SmallVec::<[_; 32]>::new();
1655 {
1656 let selections = self.local_selections::<usize>(cx);
1657 let buffer = self.buffer.read(cx).snapshot(cx);
1658 for selection in selections.iter() {
1659 let start_point = selection.start.to_point(&buffer);
1660 let indent = buffer
1661 .indent_column_for_line(start_point.row)
1662 .min(start_point.column);
1663 let start = selection.start;
1664 let end = selection.end;
1665
1666 let mut insert_extra_newline = false;
1667 if let Some(language) = buffer.language() {
1668 let leading_whitespace_len = buffer
1669 .reversed_chars_at(start)
1670 .take_while(|c| c.is_whitespace() && *c != '\n')
1671 .map(|c| c.len_utf8())
1672 .sum::<usize>();
1673
1674 let trailing_whitespace_len = buffer
1675 .chars_at(end)
1676 .take_while(|c| c.is_whitespace() && *c != '\n')
1677 .map(|c| c.len_utf8())
1678 .sum::<usize>();
1679
1680 insert_extra_newline = language.brackets().iter().any(|pair| {
1681 let pair_start = pair.start.trim_end();
1682 let pair_end = pair.end.trim_start();
1683
1684 pair.newline
1685 && buffer.contains_str_at(end + trailing_whitespace_len, pair_end)
1686 && buffer.contains_str_at(
1687 (start - leading_whitespace_len).saturating_sub(pair_start.len()),
1688 pair_start,
1689 )
1690 });
1691 }
1692
1693 old_selections.push((
1694 selection.id,
1695 buffer.anchor_after(end),
1696 start..end,
1697 indent,
1698 insert_extra_newline,
1699 ));
1700 }
1701 }
1702
1703 self.buffer.update(cx, |buffer, cx| {
1704 let mut delta = 0_isize;
1705 let mut pending_edit: Option<PendingEdit> = None;
1706 for (_, _, range, indent, insert_extra_newline) in &old_selections {
1707 if pending_edit.as_ref().map_or(false, |pending| {
1708 pending.indent != *indent
1709 || pending.insert_extra_newline != *insert_extra_newline
1710 }) {
1711 let pending = pending_edit.take().unwrap();
1712 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1713 new_text.push('\n');
1714 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1715 if pending.insert_extra_newline {
1716 new_text = new_text.repeat(2);
1717 }
1718 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1719 delta += pending.delta;
1720 }
1721
1722 let start = (range.start as isize + delta) as usize;
1723 let end = (range.end as isize + delta) as usize;
1724 let mut text_len = *indent as usize + 1;
1725 if *insert_extra_newline {
1726 text_len *= 2;
1727 }
1728
1729 let pending = pending_edit.get_or_insert_with(Default::default);
1730 pending.delta += text_len as isize - (end - start) as isize;
1731 pending.indent = *indent;
1732 pending.insert_extra_newline = *insert_extra_newline;
1733 pending.ranges.push(start..end);
1734 }
1735
1736 let pending = pending_edit.unwrap();
1737 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1738 new_text.push('\n');
1739 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1740 if pending.insert_extra_newline {
1741 new_text = new_text.repeat(2);
1742 }
1743 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1744
1745 let buffer = buffer.read(cx);
1746 self.selections = self
1747 .selections
1748 .iter()
1749 .cloned()
1750 .zip(old_selections)
1751 .map(
1752 |(mut new_selection, (_, end_anchor, _, _, insert_extra_newline))| {
1753 let mut cursor = end_anchor.to_point(&buffer);
1754 if insert_extra_newline {
1755 cursor.row -= 1;
1756 cursor.column = buffer.line_len(cursor.row);
1757 }
1758 let anchor = buffer.anchor_after(cursor);
1759 new_selection.start = anchor.clone();
1760 new_selection.end = anchor;
1761 new_selection
1762 },
1763 )
1764 .collect();
1765 });
1766
1767 self.request_autoscroll(Autoscroll::Fit, cx);
1768 self.end_transaction(cx);
1769
1770 #[derive(Default)]
1771 struct PendingEdit {
1772 indent: u32,
1773 insert_extra_newline: bool,
1774 delta: isize,
1775 ranges: SmallVec<[Range<usize>; 32]>,
1776 }
1777 }
1778
1779 pub fn insert(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1780 self.start_transaction(cx);
1781
1782 let old_selections = self.local_selections::<usize>(cx);
1783 let selection_anchors = self.buffer.update(cx, |buffer, cx| {
1784 let anchors = {
1785 let snapshot = buffer.read(cx);
1786 old_selections
1787 .iter()
1788 .map(|s| (s.id, s.goal, snapshot.anchor_after(s.end)))
1789 .collect::<Vec<_>>()
1790 };
1791 let edit_ranges = old_selections.iter().map(|s| s.start..s.end);
1792 buffer.edit_with_autoindent(edit_ranges, text, cx);
1793 anchors
1794 });
1795
1796 let selections = {
1797 let snapshot = self.buffer.read(cx).read(cx);
1798 selection_anchors
1799 .into_iter()
1800 .map(|(id, goal, position)| {
1801 let position = position.to_offset(&snapshot);
1802 Selection {
1803 id,
1804 start: position,
1805 end: position,
1806 goal,
1807 reversed: false,
1808 }
1809 })
1810 .collect()
1811 };
1812 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1813 self.end_transaction(cx);
1814 }
1815
1816 fn trigger_completion_on_input(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1817 let selection = self.newest_anchor_selection();
1818 if self
1819 .buffer
1820 .read(cx)
1821 .is_completion_trigger(selection.head(), text, cx)
1822 {
1823 self.show_completions(&ShowCompletions, cx);
1824 } else {
1825 self.hide_context_menu(cx);
1826 }
1827 }
1828
1829 fn surround_with_bracket_pair(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
1830 let snapshot = self.buffer.read(cx).snapshot(cx);
1831 if let Some(pair) = snapshot
1832 .language()
1833 .and_then(|language| language.brackets().iter().find(|b| b.start == text))
1834 .cloned()
1835 {
1836 if self
1837 .local_selections::<usize>(cx)
1838 .iter()
1839 .any(|selection| selection.is_empty())
1840 {
1841 false
1842 } else {
1843 let mut selections = self.selections.to_vec();
1844 for selection in &mut selections {
1845 selection.end = selection.end.bias_left(&snapshot);
1846 }
1847 drop(snapshot);
1848
1849 self.buffer.update(cx, |buffer, cx| {
1850 buffer.edit(
1851 selections.iter().map(|s| s.start.clone()..s.start.clone()),
1852 &pair.start,
1853 cx,
1854 );
1855 buffer.edit(
1856 selections.iter().map(|s| s.end.clone()..s.end.clone()),
1857 &pair.end,
1858 cx,
1859 );
1860 });
1861
1862 let snapshot = self.buffer.read(cx).read(cx);
1863 for selection in &mut selections {
1864 selection.end = selection.end.bias_right(&snapshot);
1865 }
1866 drop(snapshot);
1867
1868 self.set_selections(selections.into(), None, cx);
1869 true
1870 }
1871 } else {
1872 false
1873 }
1874 }
1875
1876 fn autoclose_bracket_pairs(&mut self, cx: &mut ViewContext<Self>) {
1877 let selections = self.local_selections::<usize>(cx);
1878 let mut bracket_pair_state = None;
1879 let mut new_selections = None;
1880 self.buffer.update(cx, |buffer, cx| {
1881 let mut snapshot = buffer.snapshot(cx);
1882 let left_biased_selections = selections
1883 .iter()
1884 .map(|selection| Selection {
1885 id: selection.id,
1886 start: snapshot.anchor_before(selection.start),
1887 end: snapshot.anchor_before(selection.end),
1888 reversed: selection.reversed,
1889 goal: selection.goal,
1890 })
1891 .collect::<Vec<_>>();
1892
1893 let autoclose_pair = snapshot.language().and_then(|language| {
1894 let first_selection_start = selections.first().unwrap().start;
1895 let pair = language.brackets().iter().find(|pair| {
1896 snapshot.contains_str_at(
1897 first_selection_start.saturating_sub(pair.start.len()),
1898 &pair.start,
1899 )
1900 });
1901 pair.and_then(|pair| {
1902 let should_autoclose = selections.iter().all(|selection| {
1903 // Ensure all selections are parked at the end of a pair start.
1904 if snapshot.contains_str_at(
1905 selection.start.saturating_sub(pair.start.len()),
1906 &pair.start,
1907 ) {
1908 // Autoclose only if the next character is a whitespace or a pair end
1909 // (possibly a different one from the pair we are inserting).
1910 snapshot
1911 .chars_at(selection.start)
1912 .next()
1913 .map_or(true, |ch| ch.is_whitespace())
1914 || language.brackets().iter().any(|pair| {
1915 snapshot.contains_str_at(selection.start, &pair.end)
1916 })
1917 } else {
1918 false
1919 }
1920 });
1921
1922 if should_autoclose {
1923 Some(pair.clone())
1924 } else {
1925 None
1926 }
1927 })
1928 });
1929
1930 if let Some(pair) = autoclose_pair {
1931 let selection_ranges = selections
1932 .iter()
1933 .map(|selection| {
1934 let start = selection.start.to_offset(&snapshot);
1935 start..start
1936 })
1937 .collect::<SmallVec<[_; 32]>>();
1938
1939 buffer.edit(selection_ranges, &pair.end, cx);
1940 snapshot = buffer.snapshot(cx);
1941
1942 new_selections = Some(
1943 self.resolve_selections::<usize, _>(left_biased_selections.iter(), &snapshot)
1944 .collect::<Vec<_>>(),
1945 );
1946
1947 if pair.end.len() == 1 {
1948 let mut delta = 0;
1949 bracket_pair_state = Some(BracketPairState {
1950 ranges: selections
1951 .iter()
1952 .map(move |selection| {
1953 let offset = selection.start + delta;
1954 delta += 1;
1955 snapshot.anchor_before(offset)..snapshot.anchor_after(offset)
1956 })
1957 .collect(),
1958 pair,
1959 });
1960 }
1961 }
1962 });
1963
1964 if let Some(new_selections) = new_selections {
1965 self.update_selections(new_selections, None, cx);
1966 }
1967 if let Some(bracket_pair_state) = bracket_pair_state {
1968 self.autoclose_stack.push(bracket_pair_state);
1969 }
1970 }
1971
1972 fn skip_autoclose_end(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
1973 let old_selections = self.local_selections::<usize>(cx);
1974 let autoclose_pair = if let Some(autoclose_pair) = self.autoclose_stack.last() {
1975 autoclose_pair
1976 } else {
1977 return false;
1978 };
1979 if text != autoclose_pair.pair.end {
1980 return false;
1981 }
1982
1983 debug_assert_eq!(old_selections.len(), autoclose_pair.ranges.len());
1984
1985 let buffer = self.buffer.read(cx).snapshot(cx);
1986 if old_selections
1987 .iter()
1988 .zip(autoclose_pair.ranges.iter().map(|r| r.to_offset(&buffer)))
1989 .all(|(selection, autoclose_range)| {
1990 let autoclose_range_end = autoclose_range.end.to_offset(&buffer);
1991 selection.is_empty() && selection.start == autoclose_range_end
1992 })
1993 {
1994 let new_selections = old_selections
1995 .into_iter()
1996 .map(|selection| {
1997 let cursor = selection.start + 1;
1998 Selection {
1999 id: selection.id,
2000 start: cursor,
2001 end: cursor,
2002 reversed: false,
2003 goal: SelectionGoal::None,
2004 }
2005 })
2006 .collect();
2007 self.autoclose_stack.pop();
2008 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2009 true
2010 } else {
2011 false
2012 }
2013 }
2014
2015 fn completion_query(buffer: &MultiBufferSnapshot, position: impl ToOffset) -> Option<String> {
2016 let offset = position.to_offset(buffer);
2017 let (word_range, kind) = buffer.surrounding_word(offset);
2018 if offset > word_range.start && kind == Some(CharKind::Word) {
2019 Some(
2020 buffer
2021 .text_for_range(word_range.start..offset)
2022 .collect::<String>(),
2023 )
2024 } else {
2025 None
2026 }
2027 }
2028
2029 fn show_completions(&mut self, _: &ShowCompletions, cx: &mut ViewContext<Self>) {
2030 if self.pending_rename.is_some() {
2031 return;
2032 }
2033
2034 let project = if let Some(project) = self.project.clone() {
2035 project
2036 } else {
2037 return;
2038 };
2039
2040 let position = self.newest_anchor_selection().head();
2041 let (buffer, buffer_position) = if let Some(output) = self
2042 .buffer
2043 .read(cx)
2044 .text_anchor_for_position(position.clone(), cx)
2045 {
2046 output
2047 } else {
2048 return;
2049 };
2050
2051 let query = Self::completion_query(&self.buffer.read(cx).read(cx), position.clone());
2052 let completions = project.update(cx, |project, cx| {
2053 project.completions(&buffer, buffer_position.clone(), cx)
2054 });
2055
2056 let id = post_inc(&mut self.next_completion_id);
2057 let task = cx.spawn_weak(|this, mut cx| {
2058 async move {
2059 let completions = completions.await?;
2060 if completions.is_empty() {
2061 return Ok(());
2062 }
2063
2064 let mut menu = CompletionsMenu {
2065 id,
2066 initial_position: position,
2067 match_candidates: completions
2068 .iter()
2069 .enumerate()
2070 .map(|(id, completion)| {
2071 StringMatchCandidate::new(
2072 id,
2073 completion.label.text[completion.label.filter_range.clone()].into(),
2074 )
2075 })
2076 .collect(),
2077 buffer,
2078 completions: completions.into(),
2079 matches: Vec::new().into(),
2080 selected_item: 0,
2081 list: Default::default(),
2082 };
2083
2084 menu.filter(query.as_deref(), cx.background()).await;
2085
2086 if let Some(this) = this.upgrade(&cx) {
2087 this.update(&mut cx, |this, cx| {
2088 match this.context_menu.as_ref() {
2089 None => {}
2090 Some(ContextMenu::Completions(prev_menu)) => {
2091 if prev_menu.id > menu.id {
2092 return;
2093 }
2094 }
2095 _ => return,
2096 }
2097
2098 this.completion_tasks.retain(|(id, _)| *id > menu.id);
2099 if this.focused {
2100 this.show_context_menu(ContextMenu::Completions(menu), cx);
2101 }
2102
2103 cx.notify();
2104 });
2105 }
2106 Ok::<_, anyhow::Error>(())
2107 }
2108 .log_err()
2109 });
2110 self.completion_tasks.push((id, task));
2111 }
2112
2113 pub fn confirm_completion(
2114 &mut self,
2115 ConfirmCompletion(completion_ix): &ConfirmCompletion,
2116 cx: &mut ViewContext<Self>,
2117 ) -> Option<Task<Result<()>>> {
2118 use language::ToOffset as _;
2119
2120 let completions_menu = if let ContextMenu::Completions(menu) = self.hide_context_menu(cx)? {
2121 menu
2122 } else {
2123 return None;
2124 };
2125
2126 let mat = completions_menu
2127 .matches
2128 .get(completion_ix.unwrap_or(completions_menu.selected_item))?;
2129 let buffer_handle = completions_menu.buffer;
2130 let completion = completions_menu.completions.get(mat.candidate_id)?;
2131
2132 let snippet;
2133 let text;
2134 if completion.is_snippet() {
2135 snippet = Some(Snippet::parse(&completion.new_text).log_err()?);
2136 text = snippet.as_ref().unwrap().text.clone();
2137 } else {
2138 snippet = None;
2139 text = completion.new_text.clone();
2140 };
2141 let buffer = buffer_handle.read(cx);
2142 let old_range = completion.old_range.to_offset(&buffer);
2143 let old_text = buffer.text_for_range(old_range.clone()).collect::<String>();
2144
2145 let selections = self.local_selections::<usize>(cx);
2146 let newest_selection = self.newest_anchor_selection();
2147 if newest_selection.start.buffer_id != Some(buffer_handle.id()) {
2148 return None;
2149 }
2150
2151 let lookbehind = newest_selection
2152 .start
2153 .text_anchor
2154 .to_offset(buffer)
2155 .saturating_sub(old_range.start);
2156 let lookahead = old_range
2157 .end
2158 .saturating_sub(newest_selection.end.text_anchor.to_offset(buffer));
2159 let mut common_prefix_len = old_text
2160 .bytes()
2161 .zip(text.bytes())
2162 .take_while(|(a, b)| a == b)
2163 .count();
2164
2165 let snapshot = self.buffer.read(cx).snapshot(cx);
2166 let mut ranges = Vec::new();
2167 for selection in &selections {
2168 if snapshot.contains_str_at(selection.start.saturating_sub(lookbehind), &old_text) {
2169 let start = selection.start.saturating_sub(lookbehind);
2170 let end = selection.end + lookahead;
2171 ranges.push(start + common_prefix_len..end);
2172 } else {
2173 common_prefix_len = 0;
2174 ranges.clear();
2175 ranges.extend(selections.iter().map(|s| {
2176 if s.id == newest_selection.id {
2177 old_range.clone()
2178 } else {
2179 s.start..s.end
2180 }
2181 }));
2182 break;
2183 }
2184 }
2185 let text = &text[common_prefix_len..];
2186
2187 self.start_transaction(cx);
2188 if let Some(mut snippet) = snippet {
2189 snippet.text = text.to_string();
2190 for tabstop in snippet.tabstops.iter_mut().flatten() {
2191 tabstop.start -= common_prefix_len as isize;
2192 tabstop.end -= common_prefix_len as isize;
2193 }
2194
2195 self.insert_snippet(&ranges, snippet, cx).log_err();
2196 } else {
2197 self.buffer.update(cx, |buffer, cx| {
2198 buffer.edit_with_autoindent(ranges, text, cx);
2199 });
2200 }
2201 self.end_transaction(cx);
2202
2203 let project = self.project.clone()?;
2204 let apply_edits = project.update(cx, |project, cx| {
2205 project.apply_additional_edits_for_completion(
2206 buffer_handle,
2207 completion.clone(),
2208 true,
2209 cx,
2210 )
2211 });
2212 Some(cx.foreground().spawn(async move {
2213 apply_edits.await?;
2214 Ok(())
2215 }))
2216 }
2217
2218 pub fn toggle_code_actions(
2219 &mut self,
2220 &ToggleCodeActions(deployed_from_indicator): &ToggleCodeActions,
2221 cx: &mut ViewContext<Self>,
2222 ) {
2223 if matches!(
2224 self.context_menu.as_ref(),
2225 Some(ContextMenu::CodeActions(_))
2226 ) {
2227 self.context_menu.take();
2228 cx.notify();
2229 return;
2230 }
2231
2232 let mut task = self.code_actions_task.take();
2233 cx.spawn_weak(|this, mut cx| async move {
2234 while let Some(prev_task) = task {
2235 prev_task.await;
2236 task = this
2237 .upgrade(&cx)
2238 .and_then(|this| this.update(&mut cx, |this, _| this.code_actions_task.take()));
2239 }
2240
2241 if let Some(this) = this.upgrade(&cx) {
2242 this.update(&mut cx, |this, cx| {
2243 if this.focused {
2244 if let Some((buffer, actions)) = this.available_code_actions.clone() {
2245 this.show_context_menu(
2246 ContextMenu::CodeActions(CodeActionsMenu {
2247 buffer,
2248 actions,
2249 selected_item: Default::default(),
2250 list: Default::default(),
2251 deployed_from_indicator,
2252 }),
2253 cx,
2254 );
2255 }
2256 }
2257 })
2258 }
2259 Ok::<_, anyhow::Error>(())
2260 })
2261 .detach_and_log_err(cx);
2262 }
2263
2264 pub fn confirm_code_action(
2265 workspace: &mut Workspace,
2266 ConfirmCodeAction(action_ix): &ConfirmCodeAction,
2267 cx: &mut ViewContext<Workspace>,
2268 ) -> Option<Task<Result<()>>> {
2269 let editor = workspace.active_item(cx)?.act_as::<Editor>(cx)?;
2270 let actions_menu = if let ContextMenu::CodeActions(menu) =
2271 editor.update(cx, |editor, cx| editor.hide_context_menu(cx))?
2272 {
2273 menu
2274 } else {
2275 return None;
2276 };
2277 let action_ix = action_ix.unwrap_or(actions_menu.selected_item);
2278 let action = actions_menu.actions.get(action_ix)?.clone();
2279 let title = action.lsp_action.title.clone();
2280 let buffer = actions_menu.buffer;
2281
2282 let apply_code_actions = workspace.project().clone().update(cx, |project, cx| {
2283 project.apply_code_action(buffer, action, true, cx)
2284 });
2285 Some(cx.spawn(|workspace, cx| async move {
2286 let project_transaction = apply_code_actions.await?;
2287 Self::open_project_transaction(editor, workspace, project_transaction, title, cx).await
2288 }))
2289 }
2290
2291 async fn open_project_transaction(
2292 this: ViewHandle<Editor>,
2293 workspace: ViewHandle<Workspace>,
2294 transaction: ProjectTransaction,
2295 title: String,
2296 mut cx: AsyncAppContext,
2297 ) -> Result<()> {
2298 let replica_id = this.read_with(&cx, |this, cx| this.replica_id(cx));
2299
2300 // If the code action's edits are all contained within this editor, then
2301 // avoid opening a new editor to display them.
2302 let mut entries = transaction.0.iter();
2303 if let Some((buffer, transaction)) = entries.next() {
2304 if entries.next().is_none() {
2305 let excerpt = this.read_with(&cx, |editor, cx| {
2306 editor
2307 .buffer()
2308 .read(cx)
2309 .excerpt_containing(editor.newest_anchor_selection().head(), cx)
2310 });
2311 if let Some((excerpted_buffer, excerpt_range)) = excerpt {
2312 if excerpted_buffer == *buffer {
2313 let snapshot = buffer.read_with(&cx, |buffer, _| buffer.snapshot());
2314 let excerpt_range = excerpt_range.to_offset(&snapshot);
2315 if snapshot
2316 .edited_ranges_for_transaction(transaction)
2317 .all(|range| {
2318 excerpt_range.start <= range.start && excerpt_range.end >= range.end
2319 })
2320 {
2321 return Ok(());
2322 }
2323 }
2324 }
2325 }
2326 }
2327
2328 let mut ranges_to_highlight = Vec::new();
2329 let excerpt_buffer = cx.add_model(|cx| {
2330 let mut multibuffer = MultiBuffer::new(replica_id).with_title(title);
2331 for (buffer, transaction) in &transaction.0 {
2332 let snapshot = buffer.read(cx).snapshot();
2333 ranges_to_highlight.extend(
2334 multibuffer.push_excerpts_with_context_lines(
2335 buffer.clone(),
2336 snapshot
2337 .edited_ranges_for_transaction::<usize>(transaction)
2338 .collect(),
2339 1,
2340 cx,
2341 ),
2342 );
2343 }
2344 multibuffer.push_transaction(&transaction.0);
2345 multibuffer
2346 });
2347
2348 workspace.update(&mut cx, |workspace, cx| {
2349 let editor = workspace.open_item(MultiBufferItemHandle(excerpt_buffer), cx);
2350 if let Some(editor) = editor.act_as::<Self>(cx) {
2351 editor.update(cx, |editor, cx| {
2352 let color = editor.style(cx).highlighted_line_background;
2353 editor.highlight_background::<Self>(ranges_to_highlight, color, cx);
2354 });
2355 }
2356 });
2357
2358 Ok(())
2359 }
2360
2361 fn refresh_code_actions(&mut self, cx: &mut ViewContext<Self>) -> Option<()> {
2362 let project = self.project.as_ref()?;
2363 let buffer = self.buffer.read(cx);
2364 let newest_selection = self.newest_anchor_selection().clone();
2365 let (start_buffer, start) = buffer.text_anchor_for_position(newest_selection.start, cx)?;
2366 let (end_buffer, end) = buffer.text_anchor_for_position(newest_selection.end, cx)?;
2367 if start_buffer != end_buffer {
2368 return None;
2369 }
2370
2371 let actions = project.update(cx, |project, cx| {
2372 project.code_actions(&start_buffer, start..end, cx)
2373 });
2374 self.code_actions_task = Some(cx.spawn_weak(|this, mut cx| async move {
2375 let actions = actions.await;
2376 if let Some(this) = this.upgrade(&cx) {
2377 this.update(&mut cx, |this, cx| {
2378 this.available_code_actions = actions.log_err().and_then(|actions| {
2379 if actions.is_empty() {
2380 None
2381 } else {
2382 Some((start_buffer, actions.into()))
2383 }
2384 });
2385 cx.notify();
2386 })
2387 }
2388 }));
2389 None
2390 }
2391
2392 fn refresh_document_highlights(&mut self, cx: &mut ViewContext<Self>) -> Option<()> {
2393 let project = self.project.as_ref()?;
2394 let buffer = self.buffer.read(cx);
2395 let newest_selection = self.newest_anchor_selection().clone();
2396 let cursor_position = newest_selection.head();
2397 let (cursor_buffer, cursor_buffer_position) =
2398 buffer.text_anchor_for_position(cursor_position.clone(), cx)?;
2399 let (tail_buffer, _) = buffer.text_anchor_for_position(newest_selection.tail(), cx)?;
2400 if cursor_buffer != tail_buffer {
2401 return None;
2402 }
2403
2404 let highlights = project.update(cx, |project, cx| {
2405 project.document_highlights(&cursor_buffer, cursor_buffer_position, cx)
2406 });
2407
2408 enum DocumentHighlightRead {}
2409 enum DocumentHighlightWrite {}
2410
2411 self.document_highlights_task = Some(cx.spawn_weak(|this, mut cx| async move {
2412 let highlights = highlights.log_err().await;
2413 if let Some((this, highlights)) = this.upgrade(&cx).zip(highlights) {
2414 this.update(&mut cx, |this, cx| {
2415 let buffer_id = cursor_position.buffer_id;
2416 let excerpt_id = cursor_position.excerpt_id.clone();
2417 let style = this.style(cx);
2418 let read_background = style.document_highlight_read_background;
2419 let write_background = style.document_highlight_write_background;
2420 let buffer = this.buffer.read(cx);
2421 if !buffer
2422 .text_anchor_for_position(cursor_position, cx)
2423 .map_or(false, |(buffer, _)| buffer == cursor_buffer)
2424 {
2425 return;
2426 }
2427
2428 let mut write_ranges = Vec::new();
2429 let mut read_ranges = Vec::new();
2430 for highlight in highlights {
2431 let range = Anchor {
2432 buffer_id,
2433 excerpt_id: excerpt_id.clone(),
2434 text_anchor: highlight.range.start,
2435 }..Anchor {
2436 buffer_id,
2437 excerpt_id: excerpt_id.clone(),
2438 text_anchor: highlight.range.end,
2439 };
2440 if highlight.kind == lsp::DocumentHighlightKind::WRITE {
2441 write_ranges.push(range);
2442 } else {
2443 read_ranges.push(range);
2444 }
2445 }
2446
2447 this.highlight_background::<DocumentHighlightRead>(
2448 read_ranges,
2449 read_background,
2450 cx,
2451 );
2452 this.highlight_background::<DocumentHighlightWrite>(
2453 write_ranges,
2454 write_background,
2455 cx,
2456 );
2457 cx.notify();
2458 });
2459 }
2460 }));
2461 None
2462 }
2463
2464 pub fn render_code_actions_indicator(
2465 &self,
2466 style: &EditorStyle,
2467 cx: &mut ViewContext<Self>,
2468 ) -> Option<ElementBox> {
2469 if self.available_code_actions.is_some() {
2470 enum Tag {}
2471 Some(
2472 MouseEventHandler::new::<Tag, _, _>(0, cx, |_, _| {
2473 Svg::new("icons/zap.svg")
2474 .with_color(style.code_actions_indicator)
2475 .boxed()
2476 })
2477 .with_cursor_style(CursorStyle::PointingHand)
2478 .with_padding(Padding::uniform(3.))
2479 .on_mouse_down(|cx| {
2480 cx.dispatch_action(ToggleCodeActions(true));
2481 })
2482 .boxed(),
2483 )
2484 } else {
2485 None
2486 }
2487 }
2488
2489 pub fn context_menu_visible(&self) -> bool {
2490 self.context_menu
2491 .as_ref()
2492 .map_or(false, |menu| menu.visible())
2493 }
2494
2495 pub fn render_context_menu(
2496 &self,
2497 cursor_position: DisplayPoint,
2498 style: EditorStyle,
2499 cx: &AppContext,
2500 ) -> Option<(DisplayPoint, ElementBox)> {
2501 self.context_menu
2502 .as_ref()
2503 .map(|menu| menu.render(cursor_position, style, cx))
2504 }
2505
2506 fn show_context_menu(&mut self, menu: ContextMenu, cx: &mut ViewContext<Self>) {
2507 if !matches!(menu, ContextMenu::Completions(_)) {
2508 self.completion_tasks.clear();
2509 }
2510 self.context_menu = Some(menu);
2511 cx.notify();
2512 }
2513
2514 fn hide_context_menu(&mut self, cx: &mut ViewContext<Self>) -> Option<ContextMenu> {
2515 cx.notify();
2516 self.completion_tasks.clear();
2517 self.context_menu.take()
2518 }
2519
2520 pub fn insert_snippet(
2521 &mut self,
2522 insertion_ranges: &[Range<usize>],
2523 snippet: Snippet,
2524 cx: &mut ViewContext<Self>,
2525 ) -> Result<()> {
2526 let tabstops = self.buffer.update(cx, |buffer, cx| {
2527 buffer.edit_with_autoindent(insertion_ranges.iter().cloned(), &snippet.text, cx);
2528
2529 let snapshot = &*buffer.read(cx);
2530 let snippet = &snippet;
2531 snippet
2532 .tabstops
2533 .iter()
2534 .map(|tabstop| {
2535 let mut tabstop_ranges = tabstop
2536 .iter()
2537 .flat_map(|tabstop_range| {
2538 let mut delta = 0 as isize;
2539 insertion_ranges.iter().map(move |insertion_range| {
2540 let insertion_start = insertion_range.start as isize + delta;
2541 delta +=
2542 snippet.text.len() as isize - insertion_range.len() as isize;
2543
2544 let start = snapshot.anchor_before(
2545 (insertion_start + tabstop_range.start) as usize,
2546 );
2547 let end = snapshot
2548 .anchor_after((insertion_start + tabstop_range.end) as usize);
2549 start..end
2550 })
2551 })
2552 .collect::<Vec<_>>();
2553 tabstop_ranges
2554 .sort_unstable_by(|a, b| a.start.cmp(&b.start, snapshot).unwrap());
2555 tabstop_ranges
2556 })
2557 .collect::<Vec<_>>()
2558 });
2559
2560 if let Some(tabstop) = tabstops.first() {
2561 self.select_ranges(tabstop.iter().cloned(), Some(Autoscroll::Fit), cx);
2562 self.snippet_stack.push(SnippetState {
2563 active_index: 0,
2564 ranges: tabstops,
2565 });
2566 }
2567
2568 Ok(())
2569 }
2570
2571 pub fn move_to_next_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) -> bool {
2572 self.move_to_snippet_tabstop(Bias::Right, cx)
2573 }
2574
2575 pub fn move_to_prev_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) {
2576 self.move_to_snippet_tabstop(Bias::Left, cx);
2577 }
2578
2579 pub fn move_to_snippet_tabstop(&mut self, bias: Bias, cx: &mut ViewContext<Self>) -> bool {
2580 let buffer = self.buffer.read(cx).snapshot(cx);
2581
2582 if let Some(snippet) = self.snippet_stack.last_mut() {
2583 match bias {
2584 Bias::Left => {
2585 if snippet.active_index > 0 {
2586 snippet.active_index -= 1;
2587 } else {
2588 return false;
2589 }
2590 }
2591 Bias::Right => {
2592 if snippet.active_index + 1 < snippet.ranges.len() {
2593 snippet.active_index += 1;
2594 } else {
2595 return false;
2596 }
2597 }
2598 }
2599 if let Some(current_ranges) = snippet.ranges.get(snippet.active_index) {
2600 let new_selections = current_ranges
2601 .iter()
2602 .map(|new_range| {
2603 let new_range = new_range.to_offset(&buffer);
2604 Selection {
2605 id: post_inc(&mut self.next_selection_id),
2606 start: new_range.start,
2607 end: new_range.end,
2608 reversed: false,
2609 goal: SelectionGoal::None,
2610 }
2611 })
2612 .collect();
2613
2614 // Remove the snippet state when moving to the last tabstop.
2615 if snippet.active_index + 1 == snippet.ranges.len() {
2616 self.snippet_stack.pop();
2617 }
2618
2619 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2620 return true;
2621 }
2622 self.snippet_stack.pop();
2623 }
2624
2625 false
2626 }
2627
2628 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
2629 self.start_transaction(cx);
2630 self.select_all(&SelectAll, cx);
2631 self.insert("", cx);
2632 self.end_transaction(cx);
2633 }
2634
2635 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
2636 self.start_transaction(cx);
2637 let mut selections = self.local_selections::<Point>(cx);
2638 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2639 for selection in &mut selections {
2640 if selection.is_empty() {
2641 let head = selection.head().to_display_point(&display_map);
2642 let cursor = movement::left(&display_map, head)
2643 .unwrap()
2644 .to_point(&display_map);
2645 selection.set_head(cursor);
2646 selection.goal = SelectionGoal::None;
2647 }
2648 }
2649 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2650 self.insert("", cx);
2651 self.end_transaction(cx);
2652 }
2653
2654 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
2655 self.start_transaction(cx);
2656 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2657 let mut selections = self.local_selections::<Point>(cx);
2658 for selection in &mut selections {
2659 if selection.is_empty() {
2660 let head = selection.head().to_display_point(&display_map);
2661 let cursor = movement::right(&display_map, head)
2662 .unwrap()
2663 .to_point(&display_map);
2664 selection.set_head(cursor);
2665 selection.goal = SelectionGoal::None;
2666 }
2667 }
2668 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2669 self.insert(&"", cx);
2670 self.end_transaction(cx);
2671 }
2672
2673 pub fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
2674 if self.move_to_next_snippet_tabstop(cx) {
2675 return;
2676 }
2677
2678 self.start_transaction(cx);
2679 let tab_size = self.settings.borrow().tab_size;
2680 let mut selections = self.local_selections::<Point>(cx);
2681 let mut last_indent = None;
2682 self.buffer.update(cx, |buffer, cx| {
2683 for selection in &mut selections {
2684 if selection.is_empty() {
2685 let char_column = buffer
2686 .read(cx)
2687 .text_for_range(Point::new(selection.start.row, 0)..selection.start)
2688 .flat_map(str::chars)
2689 .count();
2690 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
2691 buffer.edit(
2692 [selection.start..selection.start],
2693 " ".repeat(chars_to_next_tab_stop),
2694 cx,
2695 );
2696 selection.start.column += chars_to_next_tab_stop as u32;
2697 selection.end = selection.start;
2698 } else {
2699 let mut start_row = selection.start.row;
2700 let mut end_row = selection.end.row + 1;
2701
2702 // If a selection ends at the beginning of a line, don't indent
2703 // that last line.
2704 if selection.end.column == 0 {
2705 end_row -= 1;
2706 }
2707
2708 // Avoid re-indenting a row that has already been indented by a
2709 // previous selection, but still update this selection's column
2710 // to reflect that indentation.
2711 if let Some((last_indent_row, last_indent_len)) = last_indent {
2712 if last_indent_row == selection.start.row {
2713 selection.start.column += last_indent_len;
2714 start_row += 1;
2715 }
2716 if last_indent_row == selection.end.row {
2717 selection.end.column += last_indent_len;
2718 }
2719 }
2720
2721 for row in start_row..end_row {
2722 let indent_column = buffer.read(cx).indent_column_for_line(row) as usize;
2723 let columns_to_next_tab_stop = tab_size - (indent_column % tab_size);
2724 let row_start = Point::new(row, 0);
2725 buffer.edit(
2726 [row_start..row_start],
2727 " ".repeat(columns_to_next_tab_stop),
2728 cx,
2729 );
2730
2731 // Update this selection's endpoints to reflect the indentation.
2732 if row == selection.start.row {
2733 selection.start.column += columns_to_next_tab_stop as u32;
2734 }
2735 if row == selection.end.row {
2736 selection.end.column += columns_to_next_tab_stop as u32;
2737 }
2738
2739 last_indent = Some((row, columns_to_next_tab_stop as u32));
2740 }
2741 }
2742 }
2743 });
2744
2745 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2746 self.end_transaction(cx);
2747 }
2748
2749 pub fn outdent(&mut self, _: &Outdent, cx: &mut ViewContext<Self>) {
2750 if !self.snippet_stack.is_empty() {
2751 self.move_to_prev_snippet_tabstop(cx);
2752 return;
2753 }
2754
2755 self.start_transaction(cx);
2756 let tab_size = self.settings.borrow().tab_size;
2757 let selections = self.local_selections::<Point>(cx);
2758 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2759 let mut deletion_ranges = Vec::new();
2760 let mut last_outdent = None;
2761 {
2762 let buffer = self.buffer.read(cx).read(cx);
2763 for selection in &selections {
2764 let mut rows = selection.spanned_rows(false, &display_map);
2765
2766 // Avoid re-outdenting a row that has already been outdented by a
2767 // previous selection.
2768 if let Some(last_row) = last_outdent {
2769 if last_row == rows.start {
2770 rows.start += 1;
2771 }
2772 }
2773
2774 for row in rows {
2775 let column = buffer.indent_column_for_line(row) as usize;
2776 if column > 0 {
2777 let mut deletion_len = (column % tab_size) as u32;
2778 if deletion_len == 0 {
2779 deletion_len = tab_size as u32;
2780 }
2781 deletion_ranges.push(Point::new(row, 0)..Point::new(row, deletion_len));
2782 last_outdent = Some(row);
2783 }
2784 }
2785 }
2786 }
2787 self.buffer.update(cx, |buffer, cx| {
2788 buffer.edit(deletion_ranges, "", cx);
2789 });
2790
2791 self.update_selections(
2792 self.local_selections::<usize>(cx),
2793 Some(Autoscroll::Fit),
2794 cx,
2795 );
2796 self.end_transaction(cx);
2797 }
2798
2799 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
2800 self.start_transaction(cx);
2801
2802 let selections = self.local_selections::<Point>(cx);
2803 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2804 let buffer = self.buffer.read(cx).snapshot(cx);
2805
2806 let mut new_cursors = Vec::new();
2807 let mut edit_ranges = Vec::new();
2808 let mut selections = selections.iter().peekable();
2809 while let Some(selection) = selections.next() {
2810 let mut rows = selection.spanned_rows(false, &display_map);
2811 let goal_display_column = selection.head().to_display_point(&display_map).column();
2812
2813 // Accumulate contiguous regions of rows that we want to delete.
2814 while let Some(next_selection) = selections.peek() {
2815 let next_rows = next_selection.spanned_rows(false, &display_map);
2816 if next_rows.start <= rows.end {
2817 rows.end = next_rows.end;
2818 selections.next().unwrap();
2819 } else {
2820 break;
2821 }
2822 }
2823
2824 let mut edit_start = Point::new(rows.start, 0).to_offset(&buffer);
2825 let edit_end;
2826 let cursor_buffer_row;
2827 if buffer.max_point().row >= rows.end {
2828 // If there's a line after the range, delete the \n from the end of the row range
2829 // and position the cursor on the next line.
2830 edit_end = Point::new(rows.end, 0).to_offset(&buffer);
2831 cursor_buffer_row = rows.end;
2832 } else {
2833 // If there isn't a line after the range, delete the \n from the line before the
2834 // start of the row range and position the cursor there.
2835 edit_start = edit_start.saturating_sub(1);
2836 edit_end = buffer.len();
2837 cursor_buffer_row = rows.start.saturating_sub(1);
2838 }
2839
2840 let mut cursor = Point::new(cursor_buffer_row, 0).to_display_point(&display_map);
2841 *cursor.column_mut() =
2842 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
2843
2844 new_cursors.push((
2845 selection.id,
2846 buffer.anchor_after(cursor.to_point(&display_map)),
2847 ));
2848 edit_ranges.push(edit_start..edit_end);
2849 }
2850
2851 let buffer = self.buffer.update(cx, |buffer, cx| {
2852 buffer.edit(edit_ranges, "", cx);
2853 buffer.snapshot(cx)
2854 });
2855 let new_selections = new_cursors
2856 .into_iter()
2857 .map(|(id, cursor)| {
2858 let cursor = cursor.to_point(&buffer);
2859 Selection {
2860 id,
2861 start: cursor,
2862 end: cursor,
2863 reversed: false,
2864 goal: SelectionGoal::None,
2865 }
2866 })
2867 .collect();
2868 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2869 self.end_transaction(cx);
2870 }
2871
2872 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
2873 self.start_transaction(cx);
2874
2875 let selections = self.local_selections::<Point>(cx);
2876 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2877 let buffer = &display_map.buffer_snapshot;
2878
2879 let mut edits = Vec::new();
2880 let mut selections_iter = selections.iter().peekable();
2881 while let Some(selection) = selections_iter.next() {
2882 // Avoid duplicating the same lines twice.
2883 let mut rows = selection.spanned_rows(false, &display_map);
2884
2885 while let Some(next_selection) = selections_iter.peek() {
2886 let next_rows = next_selection.spanned_rows(false, &display_map);
2887 if next_rows.start <= rows.end - 1 {
2888 rows.end = next_rows.end;
2889 selections_iter.next().unwrap();
2890 } else {
2891 break;
2892 }
2893 }
2894
2895 // Copy the text from the selected row region and splice it at the start of the region.
2896 let start = Point::new(rows.start, 0);
2897 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
2898 let text = buffer
2899 .text_for_range(start..end)
2900 .chain(Some("\n"))
2901 .collect::<String>();
2902 edits.push((start, text, rows.len() as u32));
2903 }
2904
2905 self.buffer.update(cx, |buffer, cx| {
2906 for (point, text, _) in edits.into_iter().rev() {
2907 buffer.edit(Some(point..point), text, cx);
2908 }
2909 });
2910
2911 self.request_autoscroll(Autoscroll::Fit, cx);
2912 self.end_transaction(cx);
2913 }
2914
2915 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
2916 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2917 let buffer = self.buffer.read(cx).snapshot(cx);
2918
2919 let mut edits = Vec::new();
2920 let mut unfold_ranges = Vec::new();
2921 let mut refold_ranges = Vec::new();
2922
2923 let selections = self.local_selections::<Point>(cx);
2924 let mut selections = selections.iter().peekable();
2925 let mut contiguous_row_selections = Vec::new();
2926 let mut new_selections = Vec::new();
2927
2928 while let Some(selection) = selections.next() {
2929 // Find all the selections that span a contiguous row range
2930 contiguous_row_selections.push(selection.clone());
2931 let start_row = selection.start.row;
2932 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
2933 display_map.next_line_boundary(selection.end).0.row + 1
2934 } else {
2935 selection.end.row
2936 };
2937
2938 while let Some(next_selection) = selections.peek() {
2939 if next_selection.start.row <= end_row {
2940 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
2941 display_map.next_line_boundary(next_selection.end).0.row + 1
2942 } else {
2943 next_selection.end.row
2944 };
2945 contiguous_row_selections.push(selections.next().unwrap().clone());
2946 } else {
2947 break;
2948 }
2949 }
2950
2951 // Move the text spanned by the row range to be before the line preceding the row range
2952 if start_row > 0 {
2953 let range_to_move = Point::new(start_row - 1, buffer.line_len(start_row - 1))
2954 ..Point::new(end_row - 1, buffer.line_len(end_row - 1));
2955 let insertion_point = display_map
2956 .prev_line_boundary(Point::new(start_row - 1, 0))
2957 .0;
2958
2959 // Don't move lines across excerpts
2960 if buffer
2961 .excerpt_boundaries_in_range((
2962 Bound::Excluded(insertion_point),
2963 Bound::Included(range_to_move.end),
2964 ))
2965 .next()
2966 .is_none()
2967 {
2968 let text = buffer
2969 .text_for_range(range_to_move.clone())
2970 .flat_map(|s| s.chars())
2971 .skip(1)
2972 .chain(['\n'])
2973 .collect::<String>();
2974
2975 edits.push((
2976 buffer.anchor_after(range_to_move.start)
2977 ..buffer.anchor_before(range_to_move.end),
2978 String::new(),
2979 ));
2980 let insertion_anchor = buffer.anchor_after(insertion_point);
2981 edits.push((insertion_anchor.clone()..insertion_anchor, text));
2982
2983 let row_delta = range_to_move.start.row - insertion_point.row + 1;
2984
2985 // Move selections up
2986 new_selections.extend(contiguous_row_selections.drain(..).map(
2987 |mut selection| {
2988 selection.start.row -= row_delta;
2989 selection.end.row -= row_delta;
2990 selection
2991 },
2992 ));
2993
2994 // Move folds up
2995 unfold_ranges.push(range_to_move.clone());
2996 for fold in display_map.folds_in_range(
2997 buffer.anchor_before(range_to_move.start)
2998 ..buffer.anchor_after(range_to_move.end),
2999 ) {
3000 let mut start = fold.start.to_point(&buffer);
3001 let mut end = fold.end.to_point(&buffer);
3002 start.row -= row_delta;
3003 end.row -= row_delta;
3004 refold_ranges.push(start..end);
3005 }
3006 }
3007 }
3008
3009 // If we didn't move line(s), preserve the existing selections
3010 new_selections.extend(contiguous_row_selections.drain(..));
3011 }
3012
3013 self.start_transaction(cx);
3014 self.unfold_ranges(unfold_ranges, cx);
3015 self.buffer.update(cx, |buffer, cx| {
3016 for (range, text) in edits {
3017 buffer.edit([range], text, cx);
3018 }
3019 });
3020 self.fold_ranges(refold_ranges, cx);
3021 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3022 self.end_transaction(cx);
3023 }
3024
3025 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
3026 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3027 let buffer = self.buffer.read(cx).snapshot(cx);
3028
3029 let mut edits = Vec::new();
3030 let mut unfold_ranges = Vec::new();
3031 let mut refold_ranges = Vec::new();
3032
3033 let selections = self.local_selections::<Point>(cx);
3034 let mut selections = selections.iter().peekable();
3035 let mut contiguous_row_selections = Vec::new();
3036 let mut new_selections = Vec::new();
3037
3038 while let Some(selection) = selections.next() {
3039 // Find all the selections that span a contiguous row range
3040 contiguous_row_selections.push(selection.clone());
3041 let start_row = selection.start.row;
3042 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
3043 display_map.next_line_boundary(selection.end).0.row + 1
3044 } else {
3045 selection.end.row
3046 };
3047
3048 while let Some(next_selection) = selections.peek() {
3049 if next_selection.start.row <= end_row {
3050 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
3051 display_map.next_line_boundary(next_selection.end).0.row + 1
3052 } else {
3053 next_selection.end.row
3054 };
3055 contiguous_row_selections.push(selections.next().unwrap().clone());
3056 } else {
3057 break;
3058 }
3059 }
3060
3061 // Move the text spanned by the row range to be after the last line of the row range
3062 if end_row <= buffer.max_point().row {
3063 let range_to_move = Point::new(start_row, 0)..Point::new(end_row, 0);
3064 let insertion_point = display_map.next_line_boundary(Point::new(end_row, 0)).0;
3065
3066 // Don't move lines across excerpt boundaries
3067 if buffer
3068 .excerpt_boundaries_in_range((
3069 Bound::Excluded(range_to_move.start),
3070 Bound::Included(insertion_point),
3071 ))
3072 .next()
3073 .is_none()
3074 {
3075 let mut text = String::from("\n");
3076 text.extend(buffer.text_for_range(range_to_move.clone()));
3077 text.pop(); // Drop trailing newline
3078 edits.push((
3079 buffer.anchor_after(range_to_move.start)
3080 ..buffer.anchor_before(range_to_move.end),
3081 String::new(),
3082 ));
3083 let insertion_anchor = buffer.anchor_after(insertion_point);
3084 edits.push((insertion_anchor.clone()..insertion_anchor, text));
3085
3086 let row_delta = insertion_point.row - range_to_move.end.row + 1;
3087
3088 // Move selections down
3089 new_selections.extend(contiguous_row_selections.drain(..).map(
3090 |mut selection| {
3091 selection.start.row += row_delta;
3092 selection.end.row += row_delta;
3093 selection
3094 },
3095 ));
3096
3097 // Move folds down
3098 unfold_ranges.push(range_to_move.clone());
3099 for fold in display_map.folds_in_range(
3100 buffer.anchor_before(range_to_move.start)
3101 ..buffer.anchor_after(range_to_move.end),
3102 ) {
3103 let mut start = fold.start.to_point(&buffer);
3104 let mut end = fold.end.to_point(&buffer);
3105 start.row += row_delta;
3106 end.row += row_delta;
3107 refold_ranges.push(start..end);
3108 }
3109 }
3110 }
3111
3112 // If we didn't move line(s), preserve the existing selections
3113 new_selections.extend(contiguous_row_selections.drain(..));
3114 }
3115
3116 self.start_transaction(cx);
3117 self.unfold_ranges(unfold_ranges, cx);
3118 self.buffer.update(cx, |buffer, cx| {
3119 for (range, text) in edits {
3120 buffer.edit([range], text, cx);
3121 }
3122 });
3123 self.fold_ranges(refold_ranges, cx);
3124 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3125 self.end_transaction(cx);
3126 }
3127
3128 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
3129 self.start_transaction(cx);
3130 let mut text = String::new();
3131 let mut selections = self.local_selections::<Point>(cx);
3132 let mut clipboard_selections = Vec::with_capacity(selections.len());
3133 {
3134 let buffer = self.buffer.read(cx).read(cx);
3135 let max_point = buffer.max_point();
3136 for selection in &mut selections {
3137 let is_entire_line = selection.is_empty();
3138 if is_entire_line {
3139 selection.start = Point::new(selection.start.row, 0);
3140 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
3141 selection.goal = SelectionGoal::None;
3142 }
3143 let mut len = 0;
3144 for chunk in buffer.text_for_range(selection.start..selection.end) {
3145 text.push_str(chunk);
3146 len += chunk.len();
3147 }
3148 clipboard_selections.push(ClipboardSelection {
3149 len,
3150 is_entire_line,
3151 });
3152 }
3153 }
3154 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3155 self.insert("", cx);
3156 self.end_transaction(cx);
3157
3158 cx.as_mut()
3159 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
3160 }
3161
3162 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
3163 let selections = self.local_selections::<Point>(cx);
3164 let mut text = String::new();
3165 let mut clipboard_selections = Vec::with_capacity(selections.len());
3166 {
3167 let buffer = self.buffer.read(cx).read(cx);
3168 let max_point = buffer.max_point();
3169 for selection in selections.iter() {
3170 let mut start = selection.start;
3171 let mut end = selection.end;
3172 let is_entire_line = selection.is_empty();
3173 if is_entire_line {
3174 start = Point::new(start.row, 0);
3175 end = cmp::min(max_point, Point::new(start.row + 1, 0));
3176 }
3177 let mut len = 0;
3178 for chunk in buffer.text_for_range(start..end) {
3179 text.push_str(chunk);
3180 len += chunk.len();
3181 }
3182 clipboard_selections.push(ClipboardSelection {
3183 len,
3184 is_entire_line,
3185 });
3186 }
3187 }
3188
3189 cx.as_mut()
3190 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
3191 }
3192
3193 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
3194 if let Some(item) = cx.as_mut().read_from_clipboard() {
3195 let clipboard_text = item.text();
3196 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
3197 let mut selections = self.local_selections::<usize>(cx);
3198 let all_selections_were_entire_line =
3199 clipboard_selections.iter().all(|s| s.is_entire_line);
3200 if clipboard_selections.len() != selections.len() {
3201 clipboard_selections.clear();
3202 }
3203
3204 let mut delta = 0_isize;
3205 let mut start_offset = 0;
3206 for (i, selection) in selections.iter_mut().enumerate() {
3207 let to_insert;
3208 let entire_line;
3209 if let Some(clipboard_selection) = clipboard_selections.get(i) {
3210 let end_offset = start_offset + clipboard_selection.len;
3211 to_insert = &clipboard_text[start_offset..end_offset];
3212 entire_line = clipboard_selection.is_entire_line;
3213 start_offset = end_offset
3214 } else {
3215 to_insert = clipboard_text.as_str();
3216 entire_line = all_selections_were_entire_line;
3217 }
3218
3219 selection.start = (selection.start as isize + delta) as usize;
3220 selection.end = (selection.end as isize + delta) as usize;
3221
3222 self.buffer.update(cx, |buffer, cx| {
3223 // If the corresponding selection was empty when this slice of the
3224 // clipboard text was written, then the entire line containing the
3225 // selection was copied. If this selection is also currently empty,
3226 // then paste the line before the current line of the buffer.
3227 let range = if selection.is_empty() && entire_line {
3228 let column = selection.start.to_point(&buffer.read(cx)).column as usize;
3229 let line_start = selection.start - column;
3230 line_start..line_start
3231 } else {
3232 selection.start..selection.end
3233 };
3234
3235 delta += to_insert.len() as isize - range.len() as isize;
3236 buffer.edit([range], to_insert, cx);
3237 selection.start += to_insert.len();
3238 selection.end = selection.start;
3239 });
3240 }
3241 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3242 } else {
3243 self.insert(clipboard_text, cx);
3244 }
3245 }
3246 }
3247
3248 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
3249 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
3250 if let Some((selections, _)) = self.selection_history.get(&tx_id).cloned() {
3251 self.set_selections(selections, None, cx);
3252 }
3253 self.request_autoscroll(Autoscroll::Fit, cx);
3254 }
3255 }
3256
3257 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
3258 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
3259 if let Some((_, Some(selections))) = self.selection_history.get(&tx_id).cloned() {
3260 self.set_selections(selections, None, cx);
3261 }
3262 self.request_autoscroll(Autoscroll::Fit, cx);
3263 }
3264 }
3265
3266 pub fn finalize_last_transaction(&mut self, cx: &mut ViewContext<Self>) {
3267 self.buffer
3268 .update(cx, |buffer, cx| buffer.finalize_last_transaction(cx));
3269 }
3270
3271 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
3272 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3273 let mut selections = self.local_selections::<Point>(cx);
3274 for selection in &mut selections {
3275 let start = selection.start.to_display_point(&display_map);
3276 let end = selection.end.to_display_point(&display_map);
3277
3278 if start != end {
3279 selection.end = selection.start.clone();
3280 } else {
3281 let cursor = movement::left(&display_map, start)
3282 .unwrap()
3283 .to_point(&display_map);
3284 selection.start = cursor.clone();
3285 selection.end = cursor;
3286 }
3287 selection.reversed = false;
3288 selection.goal = SelectionGoal::None;
3289 }
3290 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3291 }
3292
3293 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
3294 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3295 let mut selections = self.local_selections::<Point>(cx);
3296 for selection in &mut selections {
3297 let head = selection.head().to_display_point(&display_map);
3298 let cursor = movement::left(&display_map, head)
3299 .unwrap()
3300 .to_point(&display_map);
3301 selection.set_head(cursor);
3302 selection.goal = SelectionGoal::None;
3303 }
3304 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3305 }
3306
3307 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
3308 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3309 let mut selections = self.local_selections::<Point>(cx);
3310 for selection in &mut selections {
3311 let start = selection.start.to_display_point(&display_map);
3312 let end = selection.end.to_display_point(&display_map);
3313
3314 if start != end {
3315 selection.start = selection.end.clone();
3316 } else {
3317 let cursor = movement::right(&display_map, end)
3318 .unwrap()
3319 .to_point(&display_map);
3320 selection.start = cursor;
3321 selection.end = cursor;
3322 }
3323 selection.reversed = false;
3324 selection.goal = SelectionGoal::None;
3325 }
3326 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3327 }
3328
3329 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
3330 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3331 let mut selections = self.local_selections::<Point>(cx);
3332 for selection in &mut selections {
3333 let head = selection.head().to_display_point(&display_map);
3334 let cursor = movement::right(&display_map, head)
3335 .unwrap()
3336 .to_point(&display_map);
3337 selection.set_head(cursor);
3338 selection.goal = SelectionGoal::None;
3339 }
3340 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3341 }
3342
3343 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
3344 if self.take_rename(cx).is_some() {
3345 return;
3346 }
3347
3348 if let Some(context_menu) = self.context_menu.as_mut() {
3349 if context_menu.select_prev(cx) {
3350 return;
3351 }
3352 }
3353
3354 if matches!(self.mode, EditorMode::SingleLine) {
3355 cx.propagate_action();
3356 return;
3357 }
3358
3359 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3360 let mut selections = self.local_selections::<Point>(cx);
3361 for selection in &mut selections {
3362 let start = selection.start.to_display_point(&display_map);
3363 let end = selection.end.to_display_point(&display_map);
3364 if start != end {
3365 selection.goal = SelectionGoal::None;
3366 }
3367
3368 let (start, goal) = movement::up(&display_map, start, selection.goal).unwrap();
3369 let cursor = start.to_point(&display_map);
3370 selection.start = cursor;
3371 selection.end = cursor;
3372 selection.goal = goal;
3373 selection.reversed = false;
3374 }
3375 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3376 }
3377
3378 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
3379 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3380 let mut selections = self.local_selections::<Point>(cx);
3381 for selection in &mut selections {
3382 let head = selection.head().to_display_point(&display_map);
3383 let (head, goal) = movement::up(&display_map, head, selection.goal).unwrap();
3384 let cursor = head.to_point(&display_map);
3385 selection.set_head(cursor);
3386 selection.goal = goal;
3387 }
3388 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3389 }
3390
3391 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
3392 self.take_rename(cx);
3393
3394 if let Some(context_menu) = self.context_menu.as_mut() {
3395 if context_menu.select_next(cx) {
3396 return;
3397 }
3398 }
3399
3400 if matches!(self.mode, EditorMode::SingleLine) {
3401 cx.propagate_action();
3402 return;
3403 }
3404
3405 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3406 let mut selections = self.local_selections::<Point>(cx);
3407 for selection in &mut selections {
3408 let start = selection.start.to_display_point(&display_map);
3409 let end = selection.end.to_display_point(&display_map);
3410 if start != end {
3411 selection.goal = SelectionGoal::None;
3412 }
3413
3414 let (start, goal) = movement::down(&display_map, end, selection.goal).unwrap();
3415 let cursor = start.to_point(&display_map);
3416 selection.start = cursor;
3417 selection.end = cursor;
3418 selection.goal = goal;
3419 selection.reversed = false;
3420 }
3421 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3422 }
3423
3424 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
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 (head, goal) = movement::down(&display_map, head, selection.goal).unwrap();
3430 let cursor = head.to_point(&display_map);
3431 selection.set_head(cursor);
3432 selection.goal = goal;
3433 }
3434 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3435 }
3436
3437 pub fn move_to_previous_word_boundary(
3438 &mut self,
3439 _: &MoveToPreviousWordBoundary,
3440 cx: &mut ViewContext<Self>,
3441 ) {
3442 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3443 let mut selections = self.local_selections::<Point>(cx);
3444 for selection in &mut selections {
3445 let head = selection.head().to_display_point(&display_map);
3446 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3447 selection.start = cursor.clone();
3448 selection.end = cursor;
3449 selection.reversed = false;
3450 selection.goal = SelectionGoal::None;
3451 }
3452 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3453 }
3454
3455 pub fn select_to_previous_word_boundary(
3456 &mut self,
3457 _: &SelectToPreviousWordBoundary,
3458 cx: &mut ViewContext<Self>,
3459 ) {
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 let head = selection.head().to_display_point(&display_map);
3464 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3465 selection.set_head(cursor);
3466 selection.goal = SelectionGoal::None;
3467 }
3468 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3469 }
3470
3471 pub fn delete_to_previous_word_boundary(
3472 &mut self,
3473 _: &DeleteToPreviousWordBoundary,
3474 cx: &mut ViewContext<Self>,
3475 ) {
3476 self.start_transaction(cx);
3477 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3478 let mut selections = self.local_selections::<Point>(cx);
3479 for selection in &mut selections {
3480 if selection.is_empty() {
3481 let head = selection.head().to_display_point(&display_map);
3482 let cursor =
3483 movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3484 selection.set_head(cursor);
3485 selection.goal = SelectionGoal::None;
3486 }
3487 }
3488 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3489 self.insert("", cx);
3490 self.end_transaction(cx);
3491 }
3492
3493 pub fn move_to_next_word_boundary(
3494 &mut self,
3495 _: &MoveToNextWordBoundary,
3496 cx: &mut ViewContext<Self>,
3497 ) {
3498 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3499 let mut selections = self.local_selections::<Point>(cx);
3500 for selection in &mut selections {
3501 let head = selection.head().to_display_point(&display_map);
3502 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
3503 selection.start = cursor;
3504 selection.end = cursor;
3505 selection.reversed = false;
3506 selection.goal = SelectionGoal::None;
3507 }
3508 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3509 }
3510
3511 pub fn select_to_next_word_boundary(
3512 &mut self,
3513 _: &SelectToNextWordBoundary,
3514 cx: &mut ViewContext<Self>,
3515 ) {
3516 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3517 let mut selections = self.local_selections::<Point>(cx);
3518 for selection in &mut selections {
3519 let head = selection.head().to_display_point(&display_map);
3520 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
3521 selection.set_head(cursor);
3522 selection.goal = SelectionGoal::None;
3523 }
3524 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3525 }
3526
3527 pub fn delete_to_next_word_boundary(
3528 &mut self,
3529 _: &DeleteToNextWordBoundary,
3530 cx: &mut ViewContext<Self>,
3531 ) {
3532 self.start_transaction(cx);
3533 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3534 let mut selections = self.local_selections::<Point>(cx);
3535 for selection in &mut selections {
3536 if selection.is_empty() {
3537 let head = selection.head().to_display_point(&display_map);
3538 let cursor =
3539 movement::next_word_boundary(&display_map, head).to_point(&display_map);
3540 selection.set_head(cursor);
3541 selection.goal = SelectionGoal::None;
3542 }
3543 }
3544 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3545 self.insert("", cx);
3546 self.end_transaction(cx);
3547 }
3548
3549 pub fn move_to_beginning_of_line(
3550 &mut self,
3551 _: &MoveToBeginningOfLine,
3552 cx: &mut ViewContext<Self>,
3553 ) {
3554 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3555 let mut selections = self.local_selections::<Point>(cx);
3556 for selection in &mut selections {
3557 let head = selection.head().to_display_point(&display_map);
3558 let new_head = movement::line_beginning(&display_map, head, true);
3559 let cursor = new_head.to_point(&display_map);
3560 selection.start = cursor;
3561 selection.end = cursor;
3562 selection.reversed = false;
3563 selection.goal = SelectionGoal::None;
3564 }
3565 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3566 }
3567
3568 pub fn select_to_beginning_of_line(
3569 &mut self,
3570 SelectToBeginningOfLine(stop_at_soft_boundaries): &SelectToBeginningOfLine,
3571 cx: &mut ViewContext<Self>,
3572 ) {
3573 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3574 let mut selections = self.local_selections::<Point>(cx);
3575 for selection in &mut selections {
3576 let head = selection.head().to_display_point(&display_map);
3577 let new_head = movement::line_beginning(&display_map, head, *stop_at_soft_boundaries);
3578 selection.set_head(new_head.to_point(&display_map));
3579 selection.goal = SelectionGoal::None;
3580 }
3581 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3582 }
3583
3584 pub fn delete_to_beginning_of_line(
3585 &mut self,
3586 _: &DeleteToBeginningOfLine,
3587 cx: &mut ViewContext<Self>,
3588 ) {
3589 self.start_transaction(cx);
3590 self.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
3591 self.backspace(&Backspace, cx);
3592 self.end_transaction(cx);
3593 }
3594
3595 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
3596 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3597 let mut selections = self.local_selections::<Point>(cx);
3598 {
3599 for selection in &mut selections {
3600 let head = selection.head().to_display_point(&display_map);
3601 let new_head = movement::line_end(&display_map, head, true);
3602 let anchor = new_head.to_point(&display_map);
3603 selection.start = anchor.clone();
3604 selection.end = anchor;
3605 selection.reversed = false;
3606 selection.goal = SelectionGoal::None;
3607 }
3608 }
3609 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3610 }
3611
3612 pub fn select_to_end_of_line(
3613 &mut self,
3614 SelectToEndOfLine(stop_at_soft_boundaries): &SelectToEndOfLine,
3615 cx: &mut ViewContext<Self>,
3616 ) {
3617 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3618 let mut selections = self.local_selections::<Point>(cx);
3619 for selection in &mut selections {
3620 let head = selection.head().to_display_point(&display_map);
3621 let new_head = movement::line_end(&display_map, head, *stop_at_soft_boundaries);
3622 selection.set_head(new_head.to_point(&display_map));
3623 selection.goal = SelectionGoal::None;
3624 }
3625 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3626 }
3627
3628 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
3629 self.start_transaction(cx);
3630 self.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3631 self.delete(&Delete, cx);
3632 self.end_transaction(cx);
3633 }
3634
3635 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
3636 self.start_transaction(cx);
3637 self.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3638 self.cut(&Cut, cx);
3639 self.end_transaction(cx);
3640 }
3641
3642 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
3643 if matches!(self.mode, EditorMode::SingleLine) {
3644 cx.propagate_action();
3645 return;
3646 }
3647
3648 let selection = Selection {
3649 id: post_inc(&mut self.next_selection_id),
3650 start: 0,
3651 end: 0,
3652 reversed: false,
3653 goal: SelectionGoal::None,
3654 };
3655 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3656 }
3657
3658 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
3659 let mut selection = self.local_selections::<Point>(cx).last().unwrap().clone();
3660 selection.set_head(Point::zero());
3661 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3662 }
3663
3664 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
3665 if matches!(self.mode, EditorMode::SingleLine) {
3666 cx.propagate_action();
3667 return;
3668 }
3669
3670 let cursor = self.buffer.read(cx).read(cx).len();
3671 let selection = Selection {
3672 id: post_inc(&mut self.next_selection_id),
3673 start: cursor,
3674 end: cursor,
3675 reversed: false,
3676 goal: SelectionGoal::None,
3677 };
3678 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3679 }
3680
3681 pub fn set_nav_history(&mut self, nav_history: Option<ItemNavHistory>) {
3682 self.nav_history = nav_history;
3683 }
3684
3685 pub fn nav_history(&self) -> Option<&ItemNavHistory> {
3686 self.nav_history.as_ref()
3687 }
3688
3689 fn push_to_nav_history(
3690 &self,
3691 position: Anchor,
3692 new_position: Option<Point>,
3693 cx: &mut ViewContext<Self>,
3694 ) {
3695 if let Some(nav_history) = &self.nav_history {
3696 let buffer = self.buffer.read(cx).read(cx);
3697 let offset = position.to_offset(&buffer);
3698 let point = position.to_point(&buffer);
3699 drop(buffer);
3700
3701 if let Some(new_position) = new_position {
3702 let row_delta = (new_position.row as i64 - point.row as i64).abs();
3703 if row_delta < MIN_NAVIGATION_HISTORY_ROW_DELTA {
3704 return;
3705 }
3706 }
3707
3708 nav_history.push(Some(NavigationData {
3709 anchor: position,
3710 offset,
3711 }));
3712 }
3713 }
3714
3715 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
3716 let mut selection = self.local_selections::<usize>(cx).first().unwrap().clone();
3717 selection.set_head(self.buffer.read(cx).read(cx).len());
3718 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3719 }
3720
3721 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
3722 let selection = Selection {
3723 id: post_inc(&mut self.next_selection_id),
3724 start: 0,
3725 end: self.buffer.read(cx).read(cx).len(),
3726 reversed: false,
3727 goal: SelectionGoal::None,
3728 };
3729 self.update_selections(vec![selection], None, cx);
3730 }
3731
3732 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
3733 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3734 let mut selections = self.local_selections::<Point>(cx);
3735 let max_point = display_map.buffer_snapshot.max_point();
3736 for selection in &mut selections {
3737 let rows = selection.spanned_rows(true, &display_map);
3738 selection.start = Point::new(rows.start, 0);
3739 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
3740 selection.reversed = false;
3741 }
3742 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3743 }
3744
3745 pub fn split_selection_into_lines(
3746 &mut self,
3747 _: &SplitSelectionIntoLines,
3748 cx: &mut ViewContext<Self>,
3749 ) {
3750 let mut to_unfold = Vec::new();
3751 let mut new_selections = Vec::new();
3752 {
3753 let selections = self.local_selections::<Point>(cx);
3754 let buffer = self.buffer.read(cx).read(cx);
3755 for selection in selections {
3756 for row in selection.start.row..selection.end.row {
3757 let cursor = Point::new(row, buffer.line_len(row));
3758 new_selections.push(Selection {
3759 id: post_inc(&mut self.next_selection_id),
3760 start: cursor,
3761 end: cursor,
3762 reversed: false,
3763 goal: SelectionGoal::None,
3764 });
3765 }
3766 new_selections.push(Selection {
3767 id: selection.id,
3768 start: selection.end,
3769 end: selection.end,
3770 reversed: false,
3771 goal: SelectionGoal::None,
3772 });
3773 to_unfold.push(selection.start..selection.end);
3774 }
3775 }
3776 self.unfold_ranges(to_unfold, cx);
3777 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3778 }
3779
3780 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
3781 self.add_selection(true, cx);
3782 }
3783
3784 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
3785 self.add_selection(false, cx);
3786 }
3787
3788 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
3789 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3790 let mut selections = self.local_selections::<Point>(cx);
3791 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
3792 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
3793 let range = oldest_selection.display_range(&display_map).sorted();
3794 let columns = cmp::min(range.start.column(), range.end.column())
3795 ..cmp::max(range.start.column(), range.end.column());
3796
3797 selections.clear();
3798 let mut stack = Vec::new();
3799 for row in range.start.row()..=range.end.row() {
3800 if let Some(selection) = self.build_columnar_selection(
3801 &display_map,
3802 row,
3803 &columns,
3804 oldest_selection.reversed,
3805 ) {
3806 stack.push(selection.id);
3807 selections.push(selection);
3808 }
3809 }
3810
3811 if above {
3812 stack.reverse();
3813 }
3814
3815 AddSelectionsState { above, stack }
3816 });
3817
3818 let last_added_selection = *state.stack.last().unwrap();
3819 let mut new_selections = Vec::new();
3820 if above == state.above {
3821 let end_row = if above {
3822 0
3823 } else {
3824 display_map.max_point().row()
3825 };
3826
3827 'outer: for selection in selections {
3828 if selection.id == last_added_selection {
3829 let range = selection.display_range(&display_map).sorted();
3830 debug_assert_eq!(range.start.row(), range.end.row());
3831 let mut row = range.start.row();
3832 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
3833 {
3834 start..end
3835 } else {
3836 cmp::min(range.start.column(), range.end.column())
3837 ..cmp::max(range.start.column(), range.end.column())
3838 };
3839
3840 while row != end_row {
3841 if above {
3842 row -= 1;
3843 } else {
3844 row += 1;
3845 }
3846
3847 if let Some(new_selection) = self.build_columnar_selection(
3848 &display_map,
3849 row,
3850 &columns,
3851 selection.reversed,
3852 ) {
3853 state.stack.push(new_selection.id);
3854 if above {
3855 new_selections.push(new_selection);
3856 new_selections.push(selection);
3857 } else {
3858 new_selections.push(selection);
3859 new_selections.push(new_selection);
3860 }
3861
3862 continue 'outer;
3863 }
3864 }
3865 }
3866
3867 new_selections.push(selection);
3868 }
3869 } else {
3870 new_selections = selections;
3871 new_selections.retain(|s| s.id != last_added_selection);
3872 state.stack.pop();
3873 }
3874
3875 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3876 if state.stack.len() > 1 {
3877 self.add_selections_state = Some(state);
3878 }
3879 }
3880
3881 pub fn select_next(&mut self, action: &SelectNext, cx: &mut ViewContext<Self>) {
3882 let replace_newest = action.0;
3883 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3884 let buffer = &display_map.buffer_snapshot;
3885 let mut selections = self.local_selections::<usize>(cx);
3886 if let Some(mut select_next_state) = self.select_next_state.take() {
3887 let query = &select_next_state.query;
3888 if !select_next_state.done {
3889 let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
3890 let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
3891 let mut next_selected_range = None;
3892
3893 let bytes_after_last_selection =
3894 buffer.bytes_in_range(last_selection.end..buffer.len());
3895 let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
3896 let query_matches = query
3897 .stream_find_iter(bytes_after_last_selection)
3898 .map(|result| (last_selection.end, result))
3899 .chain(
3900 query
3901 .stream_find_iter(bytes_before_first_selection)
3902 .map(|result| (0, result)),
3903 );
3904 for (start_offset, query_match) in query_matches {
3905 let query_match = query_match.unwrap(); // can only fail due to I/O
3906 let offset_range =
3907 start_offset + query_match.start()..start_offset + query_match.end();
3908 let display_range = offset_range.start.to_display_point(&display_map)
3909 ..offset_range.end.to_display_point(&display_map);
3910
3911 if !select_next_state.wordwise
3912 || (!movement::is_inside_word(&display_map, display_range.start)
3913 && !movement::is_inside_word(&display_map, display_range.end))
3914 {
3915 next_selected_range = Some(offset_range);
3916 break;
3917 }
3918 }
3919
3920 if let Some(next_selected_range) = next_selected_range {
3921 if replace_newest {
3922 if let Some(newest_id) =
3923 selections.iter().max_by_key(|s| s.id).map(|s| s.id)
3924 {
3925 selections.retain(|s| s.id != newest_id);
3926 }
3927 }
3928 selections.push(Selection {
3929 id: post_inc(&mut self.next_selection_id),
3930 start: next_selected_range.start,
3931 end: next_selected_range.end,
3932 reversed: false,
3933 goal: SelectionGoal::None,
3934 });
3935 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3936 } else {
3937 select_next_state.done = true;
3938 }
3939 }
3940
3941 self.select_next_state = Some(select_next_state);
3942 } else if selections.len() == 1 {
3943 let selection = selections.last_mut().unwrap();
3944 if selection.start == selection.end {
3945 let word_range = movement::surrounding_word(
3946 &display_map,
3947 selection.start.to_display_point(&display_map),
3948 );
3949 selection.start = word_range.start.to_offset(&display_map, Bias::Left);
3950 selection.end = word_range.end.to_offset(&display_map, Bias::Left);
3951 selection.goal = SelectionGoal::None;
3952 selection.reversed = false;
3953
3954 let query = buffer
3955 .text_for_range(selection.start..selection.end)
3956 .collect::<String>();
3957 let select_state = SelectNextState {
3958 query: AhoCorasick::new_auto_configured(&[query]),
3959 wordwise: true,
3960 done: false,
3961 };
3962 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3963 self.select_next_state = Some(select_state);
3964 } else {
3965 let query = buffer
3966 .text_for_range(selection.start..selection.end)
3967 .collect::<String>();
3968 self.select_next_state = Some(SelectNextState {
3969 query: AhoCorasick::new_auto_configured(&[query]),
3970 wordwise: false,
3971 done: false,
3972 });
3973 self.select_next(action, cx);
3974 }
3975 }
3976 }
3977
3978 pub fn toggle_comments(&mut self, _: &ToggleComments, cx: &mut ViewContext<Self>) {
3979 // Get the line comment prefix. Split its trailing whitespace into a separate string,
3980 // as that portion won't be used for detecting if a line is a comment.
3981 let full_comment_prefix =
3982 if let Some(prefix) = self.language(cx).and_then(|l| l.line_comment_prefix()) {
3983 prefix.to_string()
3984 } else {
3985 return;
3986 };
3987 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
3988 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
3989
3990 self.start_transaction(cx);
3991 let mut selections = self.local_selections::<Point>(cx);
3992 let mut all_selection_lines_are_comments = true;
3993 let mut edit_ranges = Vec::new();
3994 let mut last_toggled_row = None;
3995 self.buffer.update(cx, |buffer, cx| {
3996 for selection in &mut selections {
3997 edit_ranges.clear();
3998 let snapshot = buffer.snapshot(cx);
3999
4000 let end_row =
4001 if selection.end.row > selection.start.row && selection.end.column == 0 {
4002 selection.end.row
4003 } else {
4004 selection.end.row + 1
4005 };
4006
4007 for row in selection.start.row..end_row {
4008 // If multiple selections contain a given row, avoid processing that
4009 // row more than once.
4010 if last_toggled_row == Some(row) {
4011 continue;
4012 } else {
4013 last_toggled_row = Some(row);
4014 }
4015
4016 if snapshot.is_line_blank(row) {
4017 continue;
4018 }
4019
4020 let start = Point::new(row, snapshot.indent_column_for_line(row));
4021 let mut line_bytes = snapshot
4022 .bytes_in_range(start..snapshot.max_point())
4023 .flatten()
4024 .copied();
4025
4026 // If this line currently begins with the line comment prefix, then record
4027 // the range containing the prefix.
4028 if all_selection_lines_are_comments
4029 && line_bytes
4030 .by_ref()
4031 .take(comment_prefix.len())
4032 .eq(comment_prefix.bytes())
4033 {
4034 // Include any whitespace that matches the comment prefix.
4035 let matching_whitespace_len = line_bytes
4036 .zip(comment_prefix_whitespace.bytes())
4037 .take_while(|(a, b)| a == b)
4038 .count() as u32;
4039 let end = Point::new(
4040 row,
4041 start.column + comment_prefix.len() as u32 + matching_whitespace_len,
4042 );
4043 edit_ranges.push(start..end);
4044 }
4045 // If this line does not begin with the line comment prefix, then record
4046 // the position where the prefix should be inserted.
4047 else {
4048 all_selection_lines_are_comments = false;
4049 edit_ranges.push(start..start);
4050 }
4051 }
4052
4053 if !edit_ranges.is_empty() {
4054 if all_selection_lines_are_comments {
4055 buffer.edit(edit_ranges.iter().cloned(), "", cx);
4056 } else {
4057 let min_column = edit_ranges.iter().map(|r| r.start.column).min().unwrap();
4058 let edit_ranges = edit_ranges.iter().map(|range| {
4059 let position = Point::new(range.start.row, min_column);
4060 position..position
4061 });
4062 buffer.edit(edit_ranges, &full_comment_prefix, cx);
4063 }
4064 }
4065 }
4066 });
4067
4068 self.update_selections(
4069 self.local_selections::<usize>(cx),
4070 Some(Autoscroll::Fit),
4071 cx,
4072 );
4073 self.end_transaction(cx);
4074 }
4075
4076 pub fn select_larger_syntax_node(
4077 &mut self,
4078 _: &SelectLargerSyntaxNode,
4079 cx: &mut ViewContext<Self>,
4080 ) {
4081 let old_selections = self.local_selections::<usize>(cx).into_boxed_slice();
4082 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4083 let buffer = self.buffer.read(cx).snapshot(cx);
4084
4085 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
4086 let mut selected_larger_node = false;
4087 let new_selections = old_selections
4088 .iter()
4089 .map(|selection| {
4090 let old_range = selection.start..selection.end;
4091 let mut new_range = old_range.clone();
4092 while let Some(containing_range) =
4093 buffer.range_for_syntax_ancestor(new_range.clone())
4094 {
4095 new_range = containing_range;
4096 if !display_map.intersects_fold(new_range.start)
4097 && !display_map.intersects_fold(new_range.end)
4098 {
4099 break;
4100 }
4101 }
4102
4103 selected_larger_node |= new_range != old_range;
4104 Selection {
4105 id: selection.id,
4106 start: new_range.start,
4107 end: new_range.end,
4108 goal: SelectionGoal::None,
4109 reversed: selection.reversed,
4110 }
4111 })
4112 .collect::<Vec<_>>();
4113
4114 if selected_larger_node {
4115 stack.push(old_selections);
4116 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
4117 }
4118 self.select_larger_syntax_node_stack = stack;
4119 }
4120
4121 pub fn select_smaller_syntax_node(
4122 &mut self,
4123 _: &SelectSmallerSyntaxNode,
4124 cx: &mut ViewContext<Self>,
4125 ) {
4126 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
4127 if let Some(selections) = stack.pop() {
4128 self.update_selections(selections.to_vec(), Some(Autoscroll::Fit), cx);
4129 }
4130 self.select_larger_syntax_node_stack = stack;
4131 }
4132
4133 pub fn move_to_enclosing_bracket(
4134 &mut self,
4135 _: &MoveToEnclosingBracket,
4136 cx: &mut ViewContext<Self>,
4137 ) {
4138 let mut selections = self.local_selections::<usize>(cx);
4139 let buffer = self.buffer.read(cx).snapshot(cx);
4140 for selection in &mut selections {
4141 if let Some((open_range, close_range)) =
4142 buffer.enclosing_bracket_ranges(selection.start..selection.end)
4143 {
4144 let close_range = close_range.to_inclusive();
4145 let destination = if close_range.contains(&selection.start)
4146 && close_range.contains(&selection.end)
4147 {
4148 open_range.end
4149 } else {
4150 *close_range.start()
4151 };
4152 selection.start = destination;
4153 selection.end = destination;
4154 }
4155 }
4156
4157 self.update_selections(selections, Some(Autoscroll::Fit), cx);
4158 }
4159
4160 pub fn show_next_diagnostic(&mut self, _: &ShowNextDiagnostic, cx: &mut ViewContext<Self>) {
4161 let buffer = self.buffer.read(cx).snapshot(cx);
4162 let selection = self.newest_selection_with_snapshot::<usize>(&buffer);
4163 let mut active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
4164 active_diagnostics
4165 .primary_range
4166 .to_offset(&buffer)
4167 .to_inclusive()
4168 });
4169 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
4170 if active_primary_range.contains(&selection.head()) {
4171 *active_primary_range.end()
4172 } else {
4173 selection.head()
4174 }
4175 } else {
4176 selection.head()
4177 };
4178
4179 loop {
4180 let next_group = buffer
4181 .diagnostics_in_range::<_, usize>(search_start..buffer.len())
4182 .find_map(|entry| {
4183 if entry.diagnostic.is_primary
4184 && !entry.range.is_empty()
4185 && Some(entry.range.end) != active_primary_range.as_ref().map(|r| *r.end())
4186 {
4187 Some((entry.range, entry.diagnostic.group_id))
4188 } else {
4189 None
4190 }
4191 });
4192
4193 if let Some((primary_range, group_id)) = next_group {
4194 self.activate_diagnostics(group_id, cx);
4195 self.update_selections(
4196 vec![Selection {
4197 id: selection.id,
4198 start: primary_range.start,
4199 end: primary_range.start,
4200 reversed: false,
4201 goal: SelectionGoal::None,
4202 }],
4203 Some(Autoscroll::Center),
4204 cx,
4205 );
4206 break;
4207 } else if search_start == 0 {
4208 break;
4209 } else {
4210 // Cycle around to the start of the buffer, potentially moving back to the start of
4211 // the currently active diagnostic.
4212 search_start = 0;
4213 active_primary_range.take();
4214 }
4215 }
4216 }
4217
4218 pub fn go_to_definition(
4219 workspace: &mut Workspace,
4220 _: &GoToDefinition,
4221 cx: &mut ViewContext<Workspace>,
4222 ) {
4223 let active_item = workspace.active_item(cx);
4224 let editor_handle = if let Some(editor) = active_item
4225 .as_ref()
4226 .and_then(|item| item.act_as::<Self>(cx))
4227 {
4228 editor
4229 } else {
4230 return;
4231 };
4232
4233 let editor = editor_handle.read(cx);
4234 let head = editor.newest_selection::<usize>(cx).head();
4235 let (buffer, head) =
4236 if let Some(text_anchor) = editor.buffer.read(cx).text_anchor_for_position(head, cx) {
4237 text_anchor
4238 } else {
4239 return;
4240 };
4241
4242 let definitions = workspace
4243 .project()
4244 .update(cx, |project, cx| project.definition(&buffer, head, cx));
4245 cx.spawn(|workspace, mut cx| async move {
4246 let definitions = definitions.await?;
4247 workspace.update(&mut cx, |workspace, cx| {
4248 let nav_history = workspace.active_pane().read(cx).nav_history().clone();
4249 for definition in definitions {
4250 let range = definition.range.to_offset(definition.buffer.read(cx));
4251 let target_editor_handle = workspace
4252 .open_item(BufferItemHandle(definition.buffer), cx)
4253 .downcast::<Self>()
4254 .unwrap();
4255
4256 target_editor_handle.update(cx, |target_editor, cx| {
4257 // When selecting a definition in a different buffer, disable the nav history
4258 // to avoid creating a history entry at the previous cursor location.
4259 if editor_handle != target_editor_handle {
4260 nav_history.borrow_mut().disable();
4261 }
4262 target_editor.select_ranges([range], Some(Autoscroll::Center), cx);
4263 nav_history.borrow_mut().enable();
4264 });
4265 }
4266 });
4267
4268 Ok::<(), anyhow::Error>(())
4269 })
4270 .detach_and_log_err(cx);
4271 }
4272
4273 pub fn find_all_references(
4274 workspace: &mut Workspace,
4275 _: &FindAllReferences,
4276 cx: &mut ViewContext<Workspace>,
4277 ) -> Option<Task<Result<()>>> {
4278 let active_item = workspace.active_item(cx)?;
4279 let editor_handle = active_item.act_as::<Self>(cx)?;
4280
4281 let editor = editor_handle.read(cx);
4282 let head = editor.newest_selection::<usize>(cx).head();
4283 let (buffer, head) = editor.buffer.read(cx).text_anchor_for_position(head, cx)?;
4284 let replica_id = editor.replica_id(cx);
4285
4286 let references = workspace
4287 .project()
4288 .update(cx, |project, cx| project.references(&buffer, head, cx));
4289 Some(cx.spawn(|workspace, mut cx| async move {
4290 let mut locations = references.await?;
4291 if locations.is_empty() {
4292 return Ok(());
4293 }
4294
4295 locations.sort_by_key(|location| location.buffer.id());
4296 let mut locations = locations.into_iter().peekable();
4297 let mut ranges_to_highlight = Vec::new();
4298
4299 let excerpt_buffer = cx.add_model(|cx| {
4300 let mut symbol_name = None;
4301 let mut multibuffer = MultiBuffer::new(replica_id);
4302 while let Some(location) = locations.next() {
4303 let buffer = location.buffer.read(cx);
4304 let mut ranges_for_buffer = Vec::new();
4305 let range = location.range.to_offset(buffer);
4306 ranges_for_buffer.push(range.clone());
4307 if symbol_name.is_none() {
4308 symbol_name = Some(buffer.text_for_range(range).collect::<String>());
4309 }
4310
4311 while let Some(next_location) = locations.peek() {
4312 if next_location.buffer == location.buffer {
4313 ranges_for_buffer.push(next_location.range.to_offset(buffer));
4314 locations.next();
4315 } else {
4316 break;
4317 }
4318 }
4319
4320 ranges_for_buffer.sort_by_key(|range| (range.start, Reverse(range.end)));
4321 ranges_to_highlight.extend(multibuffer.push_excerpts_with_context_lines(
4322 location.buffer.clone(),
4323 ranges_for_buffer,
4324 1,
4325 cx,
4326 ));
4327 }
4328 multibuffer.with_title(format!("References to `{}`", symbol_name.unwrap()))
4329 });
4330
4331 workspace.update(&mut cx, |workspace, cx| {
4332 let editor = workspace.open_item(MultiBufferItemHandle(excerpt_buffer), cx);
4333 if let Some(editor) = editor.act_as::<Self>(cx) {
4334 editor.update(cx, |editor, cx| {
4335 let color = editor.style(cx).highlighted_line_background;
4336 editor.highlight_background::<Self>(ranges_to_highlight, color, cx);
4337 });
4338 }
4339 });
4340
4341 Ok(())
4342 }))
4343 }
4344
4345 pub fn rename(&mut self, _: &Rename, cx: &mut ViewContext<Self>) -> Option<Task<Result<()>>> {
4346 use language::ToOffset as _;
4347
4348 let project = self.project.clone()?;
4349 let selection = self.newest_anchor_selection().clone();
4350 let (cursor_buffer, cursor_buffer_position) = self
4351 .buffer
4352 .read(cx)
4353 .text_anchor_for_position(selection.head(), cx)?;
4354 let (tail_buffer, tail_buffer_position) = self
4355 .buffer
4356 .read(cx)
4357 .text_anchor_for_position(selection.tail(), cx)?;
4358 if tail_buffer != cursor_buffer {
4359 return None;
4360 }
4361
4362 let snapshot = cursor_buffer.read(cx).snapshot();
4363 let cursor_buffer_offset = cursor_buffer_position.to_offset(&snapshot);
4364 let tail_buffer_offset = tail_buffer_position.to_offset(&snapshot);
4365 let prepare_rename = project.update(cx, |project, cx| {
4366 project.prepare_rename(cursor_buffer, cursor_buffer_offset, cx)
4367 });
4368
4369 Some(cx.spawn(|this, mut cx| async move {
4370 if let Some(rename_range) = prepare_rename.await? {
4371 let rename_buffer_range = rename_range.to_offset(&snapshot);
4372 let cursor_offset_in_rename_range =
4373 cursor_buffer_offset.saturating_sub(rename_buffer_range.start);
4374 let tail_offset_in_rename_range =
4375 tail_buffer_offset.saturating_sub(rename_buffer_range.start);
4376
4377 this.update(&mut cx, |this, cx| {
4378 this.take_rename(cx);
4379 let style = this.style(cx);
4380 let buffer = this.buffer.read(cx).read(cx);
4381 let cursor_offset = selection.head().to_offset(&buffer);
4382 let rename_start = cursor_offset.saturating_sub(cursor_offset_in_rename_range);
4383 let rename_end = rename_start + rename_buffer_range.len();
4384 let range = buffer.anchor_before(rename_start)..buffer.anchor_after(rename_end);
4385 let old_name = buffer
4386 .text_for_range(rename_start..rename_end)
4387 .collect::<String>();
4388 drop(buffer);
4389
4390 // Position the selection in the rename editor so that it matches the current selection.
4391 let rename_editor = cx.add_view(|cx| {
4392 let mut editor = Editor::single_line(this.settings.clone(), None, cx);
4393 editor
4394 .buffer
4395 .update(cx, |buffer, cx| buffer.edit([0..0], &old_name, cx));
4396 editor.select_ranges(
4397 [tail_offset_in_rename_range..cursor_offset_in_rename_range],
4398 None,
4399 cx,
4400 );
4401 editor.highlight_background::<Rename>(
4402 vec![Anchor::min()..Anchor::max()],
4403 style.diff_background_inserted,
4404 cx,
4405 );
4406 editor
4407 });
4408 this.highlight_background::<Rename>(
4409 vec![range.clone()],
4410 style.diff_background_deleted,
4411 cx,
4412 );
4413 this.update_selections(
4414 vec![Selection {
4415 id: selection.id,
4416 start: rename_end,
4417 end: rename_end,
4418 reversed: false,
4419 goal: SelectionGoal::None,
4420 }],
4421 None,
4422 cx,
4423 );
4424 cx.focus(&rename_editor);
4425 let block_id = this.insert_blocks(
4426 [BlockProperties {
4427 position: range.start.clone(),
4428 height: 1,
4429 render: Arc::new({
4430 let editor = rename_editor.clone();
4431 move |cx: &BlockContext| {
4432 ChildView::new(editor.clone())
4433 .contained()
4434 .with_padding_left(cx.anchor_x)
4435 .boxed()
4436 }
4437 }),
4438 disposition: BlockDisposition::Below,
4439 }],
4440 cx,
4441 )[0];
4442 this.pending_rename = Some(RenameState {
4443 range,
4444 old_name,
4445 editor: rename_editor,
4446 block_id,
4447 });
4448 });
4449 }
4450
4451 Ok(())
4452 }))
4453 }
4454
4455 pub fn confirm_rename(
4456 workspace: &mut Workspace,
4457 _: &ConfirmRename,
4458 cx: &mut ViewContext<Workspace>,
4459 ) -> Option<Task<Result<()>>> {
4460 let editor = workspace.active_item(cx)?.act_as::<Editor>(cx)?;
4461
4462 let (buffer, range, old_name, new_name) = editor.update(cx, |editor, cx| {
4463 let rename = editor.take_rename(cx)?;
4464 let buffer = editor.buffer.read(cx);
4465 let (start_buffer, start) =
4466 buffer.text_anchor_for_position(rename.range.start.clone(), cx)?;
4467 let (end_buffer, end) =
4468 buffer.text_anchor_for_position(rename.range.end.clone(), cx)?;
4469 if start_buffer == end_buffer {
4470 let new_name = rename.editor.read(cx).text(cx);
4471 Some((start_buffer, start..end, rename.old_name, new_name))
4472 } else {
4473 None
4474 }
4475 })?;
4476
4477 let rename = workspace.project().clone().update(cx, |project, cx| {
4478 project.perform_rename(
4479 buffer.clone(),
4480 range.start.clone(),
4481 new_name.clone(),
4482 true,
4483 cx,
4484 )
4485 });
4486
4487 Some(cx.spawn(|workspace, cx| async move {
4488 let project_transaction = rename.await?;
4489 Self::open_project_transaction(
4490 editor,
4491 workspace,
4492 project_transaction,
4493 format!("Rename: {} → {}", old_name, new_name),
4494 cx,
4495 )
4496 .await
4497 }))
4498 }
4499
4500 fn take_rename(&mut self, cx: &mut ViewContext<Self>) -> Option<RenameState> {
4501 let rename = self.pending_rename.take()?;
4502 self.remove_blocks([rename.block_id].into_iter().collect(), cx);
4503 self.clear_background_highlights::<Rename>(cx);
4504
4505 let editor = rename.editor.read(cx);
4506 let snapshot = self.buffer.read(cx).snapshot(cx);
4507 let selection = editor.newest_selection_with_snapshot::<usize>(&snapshot);
4508
4509 // Update the selection to match the position of the selection inside
4510 // the rename editor.
4511 let rename_range = rename.range.to_offset(&snapshot);
4512 let start = snapshot
4513 .clip_offset(rename_range.start + selection.start, Bias::Left)
4514 .min(rename_range.end);
4515 let end = snapshot
4516 .clip_offset(rename_range.start + selection.end, Bias::Left)
4517 .min(rename_range.end);
4518 self.update_selections(
4519 vec![Selection {
4520 id: self.newest_anchor_selection().id,
4521 start,
4522 end,
4523 reversed: selection.reversed,
4524 goal: SelectionGoal::None,
4525 }],
4526 None,
4527 cx,
4528 );
4529
4530 Some(rename)
4531 }
4532
4533 fn invalidate_rename_range(
4534 &mut self,
4535 buffer: &MultiBufferSnapshot,
4536 cx: &mut ViewContext<Self>,
4537 ) {
4538 if let Some(rename) = self.pending_rename.as_ref() {
4539 if self.selections.len() == 1 {
4540 let head = self.selections[0].head().to_offset(buffer);
4541 let range = rename.range.to_offset(buffer).to_inclusive();
4542 if range.contains(&head) {
4543 return;
4544 }
4545 }
4546 let rename = self.pending_rename.take().unwrap();
4547 self.remove_blocks([rename.block_id].into_iter().collect(), cx);
4548 self.clear_background_highlights::<Rename>(cx);
4549 }
4550 }
4551
4552 #[cfg(any(test, feature = "test-support"))]
4553 pub fn pending_rename(&self) -> Option<&RenameState> {
4554 self.pending_rename.as_ref()
4555 }
4556
4557 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
4558 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
4559 let buffer = self.buffer.read(cx).snapshot(cx);
4560 let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
4561 let is_valid = buffer
4562 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone())
4563 .any(|entry| {
4564 entry.diagnostic.is_primary
4565 && !entry.range.is_empty()
4566 && entry.range.start == primary_range_start
4567 && entry.diagnostic.message == active_diagnostics.primary_message
4568 });
4569
4570 if is_valid != active_diagnostics.is_valid {
4571 active_diagnostics.is_valid = is_valid;
4572 let mut new_styles = HashMap::default();
4573 for (block_id, diagnostic) in &active_diagnostics.blocks {
4574 new_styles.insert(
4575 *block_id,
4576 diagnostic_block_renderer(
4577 diagnostic.clone(),
4578 is_valid,
4579 self.settings.clone(),
4580 ),
4581 );
4582 }
4583 self.display_map
4584 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
4585 }
4586 }
4587 }
4588
4589 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) {
4590 self.dismiss_diagnostics(cx);
4591 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
4592 let buffer = self.buffer.read(cx).snapshot(cx);
4593
4594 let mut primary_range = None;
4595 let mut primary_message = None;
4596 let mut group_end = Point::zero();
4597 let diagnostic_group = buffer
4598 .diagnostic_group::<Point>(group_id)
4599 .map(|entry| {
4600 if entry.range.end > group_end {
4601 group_end = entry.range.end;
4602 }
4603 if entry.diagnostic.is_primary {
4604 primary_range = Some(entry.range.clone());
4605 primary_message = Some(entry.diagnostic.message.clone());
4606 }
4607 entry
4608 })
4609 .collect::<Vec<_>>();
4610 let primary_range = primary_range.unwrap();
4611 let primary_message = primary_message.unwrap();
4612 let primary_range =
4613 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
4614
4615 let blocks = display_map
4616 .insert_blocks(
4617 diagnostic_group.iter().map(|entry| {
4618 let diagnostic = entry.diagnostic.clone();
4619 let message_height = diagnostic.message.lines().count() as u8;
4620 BlockProperties {
4621 position: buffer.anchor_after(entry.range.start),
4622 height: message_height,
4623 render: diagnostic_block_renderer(
4624 diagnostic,
4625 true,
4626 self.settings.clone(),
4627 ),
4628 disposition: BlockDisposition::Below,
4629 }
4630 }),
4631 cx,
4632 )
4633 .into_iter()
4634 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
4635 .collect();
4636
4637 Some(ActiveDiagnosticGroup {
4638 primary_range,
4639 primary_message,
4640 blocks,
4641 is_valid: true,
4642 })
4643 });
4644 }
4645
4646 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
4647 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
4648 self.display_map.update(cx, |display_map, cx| {
4649 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
4650 });
4651 cx.notify();
4652 }
4653 }
4654
4655 fn build_columnar_selection(
4656 &mut self,
4657 display_map: &DisplaySnapshot,
4658 row: u32,
4659 columns: &Range<u32>,
4660 reversed: bool,
4661 ) -> Option<Selection<Point>> {
4662 let is_empty = columns.start == columns.end;
4663 let line_len = display_map.line_len(row);
4664 if columns.start < line_len || (is_empty && columns.start == line_len) {
4665 let start = DisplayPoint::new(row, columns.start);
4666 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
4667 Some(Selection {
4668 id: post_inc(&mut self.next_selection_id),
4669 start: start.to_point(display_map),
4670 end: end.to_point(display_map),
4671 reversed,
4672 goal: SelectionGoal::ColumnRange {
4673 start: columns.start,
4674 end: columns.end,
4675 },
4676 })
4677 } else {
4678 None
4679 }
4680 }
4681
4682 pub fn local_selections_in_range(
4683 &self,
4684 range: Range<Anchor>,
4685 display_map: &DisplaySnapshot,
4686 ) -> Vec<Selection<Point>> {
4687 let buffer = &display_map.buffer_snapshot;
4688
4689 let start_ix = match self
4690 .selections
4691 .binary_search_by(|probe| probe.end.cmp(&range.start, &buffer).unwrap())
4692 {
4693 Ok(ix) | Err(ix) => ix,
4694 };
4695 let end_ix = match self
4696 .selections
4697 .binary_search_by(|probe| probe.start.cmp(&range.end, &buffer).unwrap())
4698 {
4699 Ok(ix) => ix + 1,
4700 Err(ix) => ix,
4701 };
4702
4703 fn point_selection(
4704 selection: &Selection<Anchor>,
4705 buffer: &MultiBufferSnapshot,
4706 ) -> Selection<Point> {
4707 let start = selection.start.to_point(&buffer);
4708 let end = selection.end.to_point(&buffer);
4709 Selection {
4710 id: selection.id,
4711 start,
4712 end,
4713 reversed: selection.reversed,
4714 goal: selection.goal,
4715 }
4716 }
4717
4718 self.selections[start_ix..end_ix]
4719 .iter()
4720 .chain(
4721 self.pending_selection
4722 .as_ref()
4723 .map(|pending| &pending.selection),
4724 )
4725 .map(|s| point_selection(s, &buffer))
4726 .collect()
4727 }
4728
4729 pub fn local_selections<'a, D>(&self, cx: &'a AppContext) -> Vec<Selection<D>>
4730 where
4731 D: 'a + TextDimension + Ord + Sub<D, Output = D>,
4732 {
4733 let buffer = self.buffer.read(cx).snapshot(cx);
4734 let mut selections = self
4735 .resolve_selections::<D, _>(self.selections.iter(), &buffer)
4736 .peekable();
4737
4738 let mut pending_selection = self.pending_selection::<D>(&buffer);
4739
4740 iter::from_fn(move || {
4741 if let Some(pending) = pending_selection.as_mut() {
4742 while let Some(next_selection) = selections.peek() {
4743 if pending.start <= next_selection.end && pending.end >= next_selection.start {
4744 let next_selection = selections.next().unwrap();
4745 if next_selection.start < pending.start {
4746 pending.start = next_selection.start;
4747 }
4748 if next_selection.end > pending.end {
4749 pending.end = next_selection.end;
4750 }
4751 } else if next_selection.end < pending.start {
4752 return selections.next();
4753 } else {
4754 break;
4755 }
4756 }
4757
4758 pending_selection.take()
4759 } else {
4760 selections.next()
4761 }
4762 })
4763 .collect()
4764 }
4765
4766 fn resolve_selections<'a, D, I>(
4767 &self,
4768 selections: I,
4769 snapshot: &MultiBufferSnapshot,
4770 ) -> impl 'a + Iterator<Item = Selection<D>>
4771 where
4772 D: TextDimension + Ord + Sub<D, Output = D>,
4773 I: 'a + IntoIterator<Item = &'a Selection<Anchor>>,
4774 {
4775 let (to_summarize, selections) = selections.into_iter().tee();
4776 let mut summaries = snapshot
4777 .summaries_for_anchors::<D, _>(to_summarize.flat_map(|s| [&s.start, &s.end]))
4778 .into_iter();
4779 selections.map(move |s| Selection {
4780 id: s.id,
4781 start: summaries.next().unwrap(),
4782 end: summaries.next().unwrap(),
4783 reversed: s.reversed,
4784 goal: s.goal,
4785 })
4786 }
4787
4788 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4789 &self,
4790 snapshot: &MultiBufferSnapshot,
4791 ) -> Option<Selection<D>> {
4792 self.pending_selection
4793 .as_ref()
4794 .map(|pending| self.resolve_selection(&pending.selection, &snapshot))
4795 }
4796
4797 fn resolve_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4798 &self,
4799 selection: &Selection<Anchor>,
4800 buffer: &MultiBufferSnapshot,
4801 ) -> Selection<D> {
4802 Selection {
4803 id: selection.id,
4804 start: selection.start.summary::<D>(&buffer),
4805 end: selection.end.summary::<D>(&buffer),
4806 reversed: selection.reversed,
4807 goal: selection.goal,
4808 }
4809 }
4810
4811 fn selection_count<'a>(&self) -> usize {
4812 let mut count = self.selections.len();
4813 if self.pending_selection.is_some() {
4814 count += 1;
4815 }
4816 count
4817 }
4818
4819 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4820 &self,
4821 cx: &AppContext,
4822 ) -> Selection<D> {
4823 let snapshot = self.buffer.read(cx).read(cx);
4824 self.selections
4825 .iter()
4826 .min_by_key(|s| s.id)
4827 .map(|selection| self.resolve_selection(selection, &snapshot))
4828 .or_else(|| self.pending_selection(&snapshot))
4829 .unwrap()
4830 }
4831
4832 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4833 &self,
4834 cx: &AppContext,
4835 ) -> Selection<D> {
4836 self.resolve_selection(
4837 self.newest_anchor_selection(),
4838 &self.buffer.read(cx).read(cx),
4839 )
4840 }
4841
4842 pub fn newest_selection_with_snapshot<D: TextDimension + Ord + Sub<D, Output = D>>(
4843 &self,
4844 snapshot: &MultiBufferSnapshot,
4845 ) -> Selection<D> {
4846 self.resolve_selection(self.newest_anchor_selection(), snapshot)
4847 }
4848
4849 pub fn newest_anchor_selection(&self) -> &Selection<Anchor> {
4850 self.pending_selection
4851 .as_ref()
4852 .map(|s| &s.selection)
4853 .or_else(|| self.selections.iter().max_by_key(|s| s.id))
4854 .unwrap()
4855 }
4856
4857 pub fn update_selections<T>(
4858 &mut self,
4859 mut selections: Vec<Selection<T>>,
4860 autoscroll: Option<Autoscroll>,
4861 cx: &mut ViewContext<Self>,
4862 ) where
4863 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
4864 {
4865 let buffer = self.buffer.read(cx).snapshot(cx);
4866 selections.sort_unstable_by_key(|s| s.start);
4867
4868 // Merge overlapping selections.
4869 let mut i = 1;
4870 while i < selections.len() {
4871 if selections[i - 1].end >= selections[i].start {
4872 let removed = selections.remove(i);
4873 if removed.start < selections[i - 1].start {
4874 selections[i - 1].start = removed.start;
4875 }
4876 if removed.end > selections[i - 1].end {
4877 selections[i - 1].end = removed.end;
4878 }
4879 } else {
4880 i += 1;
4881 }
4882 }
4883
4884 if let Some(autoscroll) = autoscroll {
4885 self.request_autoscroll(autoscroll, cx);
4886 }
4887
4888 self.set_selections(
4889 Arc::from_iter(selections.into_iter().map(|selection| {
4890 let end_bias = if selection.end > selection.start {
4891 Bias::Left
4892 } else {
4893 Bias::Right
4894 };
4895 Selection {
4896 id: selection.id,
4897 start: buffer.anchor_after(selection.start),
4898 end: buffer.anchor_at(selection.end, end_bias),
4899 reversed: selection.reversed,
4900 goal: selection.goal,
4901 }
4902 })),
4903 None,
4904 cx,
4905 );
4906 }
4907
4908 /// Compute new ranges for any selections that were located in excerpts that have
4909 /// since been removed.
4910 ///
4911 /// Returns a `HashMap` indicating which selections whose former head position
4912 /// was no longer present. The keys of the map are selection ids. The values are
4913 /// the id of the new excerpt where the head of the selection has been moved.
4914 pub fn refresh_selections(&mut self, cx: &mut ViewContext<Self>) -> HashMap<usize, ExcerptId> {
4915 let snapshot = self.buffer.read(cx).read(cx);
4916 let anchors_with_status = snapshot.refresh_anchors(
4917 self.selections
4918 .iter()
4919 .flat_map(|selection| [&selection.start, &selection.end]),
4920 );
4921 let offsets =
4922 snapshot.summaries_for_anchors::<usize, _>(anchors_with_status.iter().map(|a| &a.1));
4923 let offsets = offsets.chunks(2);
4924 let statuses = anchors_with_status
4925 .chunks(2)
4926 .map(|a| (a[0].0 / 2, a[0].2, a[1].2));
4927
4928 let mut selections_with_lost_position = HashMap::default();
4929 let new_selections = offsets
4930 .zip(statuses)
4931 .map(|(offsets, (selection_ix, kept_start, kept_end))| {
4932 let selection = &self.selections[selection_ix];
4933 let kept_head = if selection.reversed {
4934 kept_start
4935 } else {
4936 kept_end
4937 };
4938 if !kept_head {
4939 selections_with_lost_position
4940 .insert(selection.id, selection.head().excerpt_id.clone());
4941 }
4942
4943 Selection {
4944 id: selection.id,
4945 start: offsets[0],
4946 end: offsets[1],
4947 reversed: selection.reversed,
4948 goal: selection.goal,
4949 }
4950 })
4951 .collect();
4952 drop(snapshot);
4953 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
4954 selections_with_lost_position
4955 }
4956
4957 fn set_selections(
4958 &mut self,
4959 selections: Arc<[Selection<Anchor>]>,
4960 pending_selection: Option<PendingSelection>,
4961 cx: &mut ViewContext<Self>,
4962 ) {
4963 let old_cursor_position = self.newest_anchor_selection().head();
4964
4965 self.selections = selections;
4966 self.pending_selection = pending_selection;
4967 if self.focused {
4968 self.buffer.update(cx, |buffer, cx| {
4969 buffer.set_active_selections(&self.selections, cx)
4970 });
4971 }
4972
4973 let display_map = self
4974 .display_map
4975 .update(cx, |display_map, cx| display_map.snapshot(cx));
4976 let buffer = &display_map.buffer_snapshot;
4977 self.add_selections_state = None;
4978 self.select_next_state = None;
4979 self.select_larger_syntax_node_stack.clear();
4980 self.autoclose_stack.invalidate(&self.selections, &buffer);
4981 self.snippet_stack.invalidate(&self.selections, &buffer);
4982 self.invalidate_rename_range(&buffer, cx);
4983
4984 let new_cursor_position = self.newest_anchor_selection().head();
4985
4986 self.push_to_nav_history(
4987 old_cursor_position.clone(),
4988 Some(new_cursor_position.to_point(&buffer)),
4989 cx,
4990 );
4991
4992 let completion_menu = match self.context_menu.as_mut() {
4993 Some(ContextMenu::Completions(menu)) => Some(menu),
4994 _ => {
4995 self.context_menu.take();
4996 None
4997 }
4998 };
4999
5000 if let Some(completion_menu) = completion_menu {
5001 let cursor_position = new_cursor_position.to_offset(&buffer);
5002 let (word_range, kind) =
5003 buffer.surrounding_word(completion_menu.initial_position.clone());
5004 if kind == Some(CharKind::Word) && word_range.to_inclusive().contains(&cursor_position)
5005 {
5006 let query = Self::completion_query(&buffer, cursor_position);
5007 cx.background()
5008 .block(completion_menu.filter(query.as_deref(), cx.background().clone()));
5009 self.show_completions(&ShowCompletions, cx);
5010 } else {
5011 self.hide_context_menu(cx);
5012 }
5013 }
5014
5015 if old_cursor_position.to_display_point(&display_map).row()
5016 != new_cursor_position.to_display_point(&display_map).row()
5017 {
5018 self.available_code_actions.take();
5019 }
5020 self.refresh_code_actions(cx);
5021 self.refresh_document_highlights(cx);
5022
5023 self.pause_cursor_blinking(cx);
5024 cx.emit(Event::SelectionsChanged);
5025 }
5026
5027 pub fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
5028 self.autoscroll_request = Some(autoscroll);
5029 cx.notify();
5030 }
5031
5032 fn start_transaction(&mut self, cx: &mut ViewContext<Self>) {
5033 self.start_transaction_at(Instant::now(), cx);
5034 }
5035
5036 fn start_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
5037 self.end_selection(cx);
5038 if let Some(tx_id) = self
5039 .buffer
5040 .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
5041 {
5042 self.selection_history
5043 .insert(tx_id, (self.selections.clone(), None));
5044 }
5045 }
5046
5047 fn end_transaction(&mut self, cx: &mut ViewContext<Self>) {
5048 self.end_transaction_at(Instant::now(), cx);
5049 }
5050
5051 fn end_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
5052 if let Some(tx_id) = self
5053 .buffer
5054 .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
5055 {
5056 if let Some((_, end_selections)) = self.selection_history.get_mut(&tx_id) {
5057 *end_selections = Some(self.selections.clone());
5058 } else {
5059 log::error!("unexpectedly ended a transaction that wasn't started by this editor");
5060 }
5061 }
5062 }
5063
5064 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
5065 log::info!("Editor::page_up");
5066 }
5067
5068 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
5069 log::info!("Editor::page_down");
5070 }
5071
5072 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
5073 let mut fold_ranges = Vec::new();
5074
5075 let selections = self.local_selections::<Point>(cx);
5076 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
5077 for selection in selections {
5078 let range = selection.display_range(&display_map).sorted();
5079 let buffer_start_row = range.start.to_point(&display_map).row;
5080
5081 for row in (0..=range.end.row()).rev() {
5082 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
5083 let fold_range = self.foldable_range_for_line(&display_map, row);
5084 if fold_range.end.row >= buffer_start_row {
5085 fold_ranges.push(fold_range);
5086 if row <= range.start.row() {
5087 break;
5088 }
5089 }
5090 }
5091 }
5092 }
5093
5094 self.fold_ranges(fold_ranges, cx);
5095 }
5096
5097 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
5098 let selections = self.local_selections::<Point>(cx);
5099 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
5100 let buffer = &display_map.buffer_snapshot;
5101 let ranges = selections
5102 .iter()
5103 .map(|s| {
5104 let range = s.display_range(&display_map).sorted();
5105 let mut start = range.start.to_point(&display_map);
5106 let mut end = range.end.to_point(&display_map);
5107 start.column = 0;
5108 end.column = buffer.line_len(end.row);
5109 start..end
5110 })
5111 .collect::<Vec<_>>();
5112 self.unfold_ranges(ranges, cx);
5113 }
5114
5115 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
5116 let max_point = display_map.max_point();
5117 if display_row >= max_point.row() {
5118 false
5119 } else {
5120 let (start_indent, is_blank) = display_map.line_indent(display_row);
5121 if is_blank {
5122 false
5123 } else {
5124 for display_row in display_row + 1..=max_point.row() {
5125 let (indent, is_blank) = display_map.line_indent(display_row);
5126 if !is_blank {
5127 return indent > start_indent;
5128 }
5129 }
5130 false
5131 }
5132 }
5133 }
5134
5135 fn foldable_range_for_line(
5136 &self,
5137 display_map: &DisplaySnapshot,
5138 start_row: u32,
5139 ) -> Range<Point> {
5140 let max_point = display_map.max_point();
5141
5142 let (start_indent, _) = display_map.line_indent(start_row);
5143 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
5144 let mut end = None;
5145 for row in start_row + 1..=max_point.row() {
5146 let (indent, is_blank) = display_map.line_indent(row);
5147 if !is_blank && indent <= start_indent {
5148 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
5149 break;
5150 }
5151 }
5152
5153 let end = end.unwrap_or(max_point);
5154 return start.to_point(display_map)..end.to_point(display_map);
5155 }
5156
5157 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
5158 let selections = self.local_selections::<Point>(cx);
5159 let ranges = selections.into_iter().map(|s| s.start..s.end);
5160 self.fold_ranges(ranges, cx);
5161 }
5162
5163 fn fold_ranges<T: ToOffset>(
5164 &mut self,
5165 ranges: impl IntoIterator<Item = Range<T>>,
5166 cx: &mut ViewContext<Self>,
5167 ) {
5168 let mut ranges = ranges.into_iter().peekable();
5169 if ranges.peek().is_some() {
5170 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
5171 self.request_autoscroll(Autoscroll::Fit, cx);
5172 cx.notify();
5173 }
5174 }
5175
5176 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
5177 if !ranges.is_empty() {
5178 self.display_map
5179 .update(cx, |map, cx| map.unfold(ranges, cx));
5180 self.request_autoscroll(Autoscroll::Fit, cx);
5181 cx.notify();
5182 }
5183 }
5184
5185 pub fn insert_blocks(
5186 &mut self,
5187 blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
5188 cx: &mut ViewContext<Self>,
5189 ) -> Vec<BlockId> {
5190 let blocks = self
5191 .display_map
5192 .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
5193 self.request_autoscroll(Autoscroll::Fit, cx);
5194 blocks
5195 }
5196
5197 pub fn replace_blocks(
5198 &mut self,
5199 blocks: HashMap<BlockId, RenderBlock>,
5200 cx: &mut ViewContext<Self>,
5201 ) {
5202 self.display_map
5203 .update(cx, |display_map, _| display_map.replace_blocks(blocks));
5204 self.request_autoscroll(Autoscroll::Fit, cx);
5205 }
5206
5207 pub fn remove_blocks(&mut self, block_ids: HashSet<BlockId>, cx: &mut ViewContext<Self>) {
5208 self.display_map.update(cx, |display_map, cx| {
5209 display_map.remove_blocks(block_ids, cx)
5210 });
5211 }
5212
5213 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
5214 self.display_map
5215 .update(cx, |map, cx| map.snapshot(cx))
5216 .longest_row()
5217 }
5218
5219 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
5220 self.display_map
5221 .update(cx, |map, cx| map.snapshot(cx))
5222 .max_point()
5223 }
5224
5225 pub fn text(&self, cx: &AppContext) -> String {
5226 self.buffer.read(cx).read(cx).text()
5227 }
5228
5229 pub fn set_text(&mut self, text: impl Into<String>, cx: &mut ViewContext<Self>) {
5230 self.buffer
5231 .read(cx)
5232 .as_singleton()
5233 .expect("you can only call set_text on editors for singleton buffers")
5234 .update(cx, |buffer, cx| buffer.set_text(text, cx));
5235 }
5236
5237 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
5238 self.display_map
5239 .update(cx, |map, cx| map.snapshot(cx))
5240 .text()
5241 }
5242
5243 pub fn soft_wrap_mode(&self, cx: &AppContext) -> SoftWrap {
5244 let language = self.language(cx);
5245 let settings = self.settings.borrow();
5246 let mode = self
5247 .soft_wrap_mode_override
5248 .unwrap_or_else(|| settings.soft_wrap(language));
5249 match mode {
5250 settings::SoftWrap::None => SoftWrap::None,
5251 settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
5252 settings::SoftWrap::PreferredLineLength => {
5253 SoftWrap::Column(settings.preferred_line_length(language))
5254 }
5255 }
5256 }
5257
5258 pub fn set_soft_wrap_mode(&mut self, mode: settings::SoftWrap, cx: &mut ViewContext<Self>) {
5259 self.soft_wrap_mode_override = Some(mode);
5260 cx.notify();
5261 }
5262
5263 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
5264 self.display_map
5265 .update(cx, |map, cx| map.set_wrap_width(width, cx))
5266 }
5267
5268 pub fn highlight_rows(&mut self, rows: Option<Range<u32>>) {
5269 self.highlighted_rows = rows;
5270 }
5271
5272 pub fn highlighted_rows(&self) -> Option<Range<u32>> {
5273 self.highlighted_rows.clone()
5274 }
5275
5276 pub fn highlight_background<T: 'static>(
5277 &mut self,
5278 ranges: Vec<Range<Anchor>>,
5279 color: Color,
5280 cx: &mut ViewContext<Self>,
5281 ) {
5282 self.background_highlights
5283 .insert(TypeId::of::<T>(), (color, ranges));
5284 cx.notify();
5285 }
5286
5287 pub fn clear_background_highlights<T: 'static>(
5288 &mut self,
5289 cx: &mut ViewContext<Self>,
5290 ) -> Option<(Color, Vec<Range<Anchor>>)> {
5291 cx.notify();
5292 self.background_highlights.remove(&TypeId::of::<T>())
5293 }
5294
5295 #[cfg(feature = "test-support")]
5296 pub fn all_background_highlights(
5297 &mut self,
5298 cx: &mut ViewContext<Self>,
5299 ) -> Vec<(Range<DisplayPoint>, Color)> {
5300 let snapshot = self.snapshot(cx);
5301 let buffer = &snapshot.buffer_snapshot;
5302 let start = buffer.anchor_before(0);
5303 let end = buffer.anchor_after(buffer.len());
5304 self.background_highlights_in_range(start..end, &snapshot)
5305 }
5306
5307 pub fn background_highlights_for_type<T: 'static>(&self) -> Option<(Color, &[Range<Anchor>])> {
5308 self.background_highlights
5309 .get(&TypeId::of::<T>())
5310 .map(|(color, ranges)| (*color, ranges.as_slice()))
5311 }
5312
5313 pub fn background_highlights_in_range(
5314 &self,
5315 search_range: Range<Anchor>,
5316 display_snapshot: &DisplaySnapshot,
5317 ) -> Vec<(Range<DisplayPoint>, Color)> {
5318 let mut results = Vec::new();
5319 let buffer = &display_snapshot.buffer_snapshot;
5320 for (color, ranges) in self.background_highlights.values() {
5321 let start_ix = match ranges.binary_search_by(|probe| {
5322 let cmp = probe.end.cmp(&search_range.start, &buffer).unwrap();
5323 if cmp.is_gt() {
5324 Ordering::Greater
5325 } else {
5326 Ordering::Less
5327 }
5328 }) {
5329 Ok(i) | Err(i) => i,
5330 };
5331 for range in &ranges[start_ix..] {
5332 if range.start.cmp(&search_range.end, &buffer).unwrap().is_ge() {
5333 break;
5334 }
5335 let start = range
5336 .start
5337 .to_point(buffer)
5338 .to_display_point(display_snapshot);
5339 let end = range
5340 .end
5341 .to_point(buffer)
5342 .to_display_point(display_snapshot);
5343 results.push((start..end, *color))
5344 }
5345 }
5346 results
5347 }
5348
5349 pub fn highlight_text<T: 'static>(
5350 &mut self,
5351 ranges: Vec<Range<Anchor>>,
5352 style: HighlightStyle,
5353 cx: &mut ViewContext<Self>,
5354 ) {
5355 self.display_map.update(cx, |map, _| {
5356 map.highlight_text(TypeId::of::<T>(), ranges, style)
5357 });
5358 cx.notify();
5359 }
5360
5361 pub fn clear_text_highlights<T: 'static>(&mut self, cx: &mut ViewContext<Self>) {
5362 self.display_map
5363 .update(cx, |map, _| map.clear_text_highlights(TypeId::of::<T>()));
5364 cx.notify();
5365 }
5366
5367 fn next_blink_epoch(&mut self) -> usize {
5368 self.blink_epoch += 1;
5369 self.blink_epoch
5370 }
5371
5372 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
5373 if !self.focused {
5374 return;
5375 }
5376
5377 self.show_local_cursors = true;
5378 cx.notify();
5379
5380 let epoch = self.next_blink_epoch();
5381 cx.spawn(|this, mut cx| {
5382 let this = this.downgrade();
5383 async move {
5384 Timer::after(CURSOR_BLINK_INTERVAL).await;
5385 if let Some(this) = this.upgrade(&cx) {
5386 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
5387 }
5388 }
5389 })
5390 .detach();
5391 }
5392
5393 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
5394 if epoch == self.blink_epoch {
5395 self.blinking_paused = false;
5396 self.blink_cursors(epoch, cx);
5397 }
5398 }
5399
5400 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
5401 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
5402 self.show_local_cursors = !self.show_local_cursors;
5403 cx.notify();
5404
5405 let epoch = self.next_blink_epoch();
5406 cx.spawn(|this, mut cx| {
5407 let this = this.downgrade();
5408 async move {
5409 Timer::after(CURSOR_BLINK_INTERVAL).await;
5410 if let Some(this) = this.upgrade(&cx) {
5411 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
5412 }
5413 }
5414 })
5415 .detach();
5416 }
5417 }
5418
5419 pub fn show_local_cursors(&self) -> bool {
5420 self.show_local_cursors
5421 }
5422
5423 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
5424 cx.notify();
5425 }
5426
5427 fn on_buffer_event(
5428 &mut self,
5429 _: ModelHandle<MultiBuffer>,
5430 event: &language::Event,
5431 cx: &mut ViewContext<Self>,
5432 ) {
5433 match event {
5434 language::Event::Edited => {
5435 self.refresh_active_diagnostics(cx);
5436 self.refresh_code_actions(cx);
5437 cx.emit(Event::Edited);
5438 }
5439 language::Event::Dirtied => cx.emit(Event::Dirtied),
5440 language::Event::Saved => cx.emit(Event::Saved),
5441 language::Event::FileHandleChanged => cx.emit(Event::TitleChanged),
5442 language::Event::Reloaded => cx.emit(Event::TitleChanged),
5443 language::Event::Closed => cx.emit(Event::Closed),
5444 language::Event::DiagnosticsUpdated => {
5445 self.refresh_active_diagnostics(cx);
5446 }
5447 _ => {}
5448 }
5449 }
5450
5451 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
5452 cx.notify();
5453 }
5454
5455 pub fn set_searchable(&mut self, searchable: bool) {
5456 self.searchable = searchable;
5457 }
5458
5459 pub fn searchable(&self) -> bool {
5460 self.searchable
5461 }
5462
5463 fn open_excerpts(workspace: &mut Workspace, _: &OpenExcerpts, cx: &mut ViewContext<Workspace>) {
5464 let active_item = workspace.active_item(cx);
5465 let editor_handle = if let Some(editor) = active_item
5466 .as_ref()
5467 .and_then(|item| item.act_as::<Self>(cx))
5468 {
5469 editor
5470 } else {
5471 cx.propagate_action();
5472 return;
5473 };
5474
5475 let editor = editor_handle.read(cx);
5476 let buffer = editor.buffer.read(cx);
5477 if buffer.is_singleton() {
5478 cx.propagate_action();
5479 return;
5480 }
5481
5482 let mut new_selections_by_buffer = HashMap::default();
5483 for selection in editor.local_selections::<usize>(cx) {
5484 for (buffer, mut range) in
5485 buffer.range_to_buffer_ranges(selection.start..selection.end, cx)
5486 {
5487 if selection.reversed {
5488 mem::swap(&mut range.start, &mut range.end);
5489 }
5490 new_selections_by_buffer
5491 .entry(buffer)
5492 .or_insert(Vec::new())
5493 .push(range)
5494 }
5495 }
5496
5497 editor_handle.update(cx, |editor, cx| {
5498 editor.push_to_nav_history(editor.newest_anchor_selection().head(), None, cx);
5499 });
5500 let nav_history = workspace.active_pane().read(cx).nav_history().clone();
5501 nav_history.borrow_mut().disable();
5502
5503 // We defer the pane interaction because we ourselves are a workspace item
5504 // and activating a new item causes the pane to call a method on us reentrantly,
5505 // which panics if we're on the stack.
5506 cx.defer(move |workspace, cx| {
5507 for (ix, (buffer, ranges)) in new_selections_by_buffer.into_iter().enumerate() {
5508 let buffer = BufferItemHandle(buffer);
5509 if ix == 0 && !workspace.activate_pane_for_item(&buffer, cx) {
5510 workspace.activate_next_pane(cx);
5511 }
5512
5513 let editor = workspace
5514 .open_item(buffer, cx)
5515 .downcast::<Editor>()
5516 .unwrap();
5517
5518 editor.update(cx, |editor, cx| {
5519 editor.select_ranges(ranges, Some(Autoscroll::Newest), cx);
5520 });
5521 }
5522
5523 nav_history.borrow_mut().enable();
5524 });
5525 }
5526}
5527
5528impl EditorSnapshot {
5529 pub fn is_focused(&self) -> bool {
5530 self.is_focused
5531 }
5532
5533 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
5534 self.placeholder_text.as_ref()
5535 }
5536
5537 pub fn scroll_position(&self) -> Vector2F {
5538 compute_scroll_position(
5539 &self.display_snapshot,
5540 self.scroll_position,
5541 &self.scroll_top_anchor,
5542 )
5543 }
5544}
5545
5546impl Deref for EditorSnapshot {
5547 type Target = DisplaySnapshot;
5548
5549 fn deref(&self) -> &Self::Target {
5550 &self.display_snapshot
5551 }
5552}
5553
5554fn compute_scroll_position(
5555 snapshot: &DisplaySnapshot,
5556 mut scroll_position: Vector2F,
5557 scroll_top_anchor: &Option<Anchor>,
5558) -> Vector2F {
5559 if let Some(anchor) = scroll_top_anchor {
5560 let scroll_top = anchor.to_display_point(snapshot).row() as f32;
5561 scroll_position.set_y(scroll_top + scroll_position.y());
5562 } else {
5563 scroll_position.set_y(0.);
5564 }
5565 scroll_position
5566}
5567
5568#[derive(Copy, Clone)]
5569pub enum Event {
5570 Activate,
5571 Edited,
5572 Blurred,
5573 Dirtied,
5574 Saved,
5575 TitleChanged,
5576 SelectionsChanged,
5577 Closed,
5578}
5579
5580impl Entity for Editor {
5581 type Event = Event;
5582}
5583
5584impl View for Editor {
5585 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
5586 let style = self.style(cx);
5587 self.display_map.update(cx, |map, cx| {
5588 map.set_font(style.text.font_id, style.text.font_size, cx)
5589 });
5590 EditorElement::new(self.handle.clone(), style.clone()).boxed()
5591 }
5592
5593 fn ui_name() -> &'static str {
5594 "Editor"
5595 }
5596
5597 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
5598 self.focused = true;
5599 self.blink_cursors(self.blink_epoch, cx);
5600 self.buffer.update(cx, |buffer, cx| {
5601 buffer.finalize_last_transaction(cx);
5602 buffer.set_active_selections(&self.selections, cx)
5603 });
5604 }
5605
5606 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
5607 self.focused = false;
5608 self.show_local_cursors = false;
5609 self.buffer
5610 .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
5611 self.hide_context_menu(cx);
5612 cx.emit(Event::Blurred);
5613 cx.notify();
5614 }
5615
5616 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
5617 let mut cx = Self::default_keymap_context();
5618 let mode = match self.mode {
5619 EditorMode::SingleLine => "single_line",
5620 EditorMode::AutoHeight { .. } => "auto_height",
5621 EditorMode::Full => "full",
5622 };
5623 cx.map.insert("mode".into(), mode.into());
5624 if self.pending_rename.is_some() {
5625 cx.set.insert("renaming".into());
5626 }
5627 match self.context_menu.as_ref() {
5628 Some(ContextMenu::Completions(_)) => {
5629 cx.set.insert("showing_completions".into());
5630 }
5631 Some(ContextMenu::CodeActions(_)) => {
5632 cx.set.insert("showing_code_actions".into());
5633 }
5634 None => {}
5635 }
5636 cx
5637 }
5638}
5639
5640fn build_style(
5641 settings: &Settings,
5642 get_field_editor_theme: Option<GetFieldEditorTheme>,
5643 cx: &AppContext,
5644) -> EditorStyle {
5645 let mut theme = settings.theme.editor.clone();
5646 if let Some(get_field_editor_theme) = get_field_editor_theme {
5647 let field_editor_theme = get_field_editor_theme(&settings.theme);
5648 if let Some(background) = field_editor_theme.container.background_color {
5649 theme.background = background;
5650 }
5651 theme.text_color = field_editor_theme.text.color;
5652 theme.selection = field_editor_theme.selection;
5653 EditorStyle {
5654 text: field_editor_theme.text,
5655 placeholder_text: field_editor_theme.placeholder_text,
5656 theme,
5657 }
5658 } else {
5659 let font_cache = cx.font_cache();
5660 let font_family_id = settings.buffer_font_family;
5661 let font_family_name = cx.font_cache().family_name(font_family_id).unwrap();
5662 let font_properties = Default::default();
5663 let font_id = font_cache
5664 .select_font(font_family_id, &font_properties)
5665 .unwrap();
5666 let font_size = settings.buffer_font_size;
5667 EditorStyle {
5668 text: TextStyle {
5669 color: settings.theme.editor.text_color,
5670 font_family_name,
5671 font_family_id,
5672 font_id,
5673 font_size,
5674 font_properties,
5675 underline: None,
5676 },
5677 placeholder_text: None,
5678 theme,
5679 }
5680 }
5681}
5682
5683impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
5684 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
5685 let start = self.start.to_point(buffer);
5686 let end = self.end.to_point(buffer);
5687 if self.reversed {
5688 end..start
5689 } else {
5690 start..end
5691 }
5692 }
5693
5694 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
5695 let start = self.start.to_offset(buffer);
5696 let end = self.end.to_offset(buffer);
5697 if self.reversed {
5698 end..start
5699 } else {
5700 start..end
5701 }
5702 }
5703
5704 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
5705 let start = self
5706 .start
5707 .to_point(&map.buffer_snapshot)
5708 .to_display_point(map);
5709 let end = self
5710 .end
5711 .to_point(&map.buffer_snapshot)
5712 .to_display_point(map);
5713 if self.reversed {
5714 end..start
5715 } else {
5716 start..end
5717 }
5718 }
5719
5720 fn spanned_rows(
5721 &self,
5722 include_end_if_at_line_start: bool,
5723 map: &DisplaySnapshot,
5724 ) -> Range<u32> {
5725 let start = self.start.to_point(&map.buffer_snapshot);
5726 let mut end = self.end.to_point(&map.buffer_snapshot);
5727 if !include_end_if_at_line_start && start.row != end.row && end.column == 0 {
5728 end.row -= 1;
5729 }
5730
5731 let buffer_start = map.prev_line_boundary(start).0;
5732 let buffer_end = map.next_line_boundary(end).0;
5733 buffer_start.row..buffer_end.row + 1
5734 }
5735}
5736
5737impl<T: InvalidationRegion> InvalidationStack<T> {
5738 fn invalidate<S>(&mut self, selections: &[Selection<S>], buffer: &MultiBufferSnapshot)
5739 where
5740 S: Clone + ToOffset,
5741 {
5742 while let Some(region) = self.last() {
5743 let all_selections_inside_invalidation_ranges =
5744 if selections.len() == region.ranges().len() {
5745 selections
5746 .iter()
5747 .zip(region.ranges().iter().map(|r| r.to_offset(&buffer)))
5748 .all(|(selection, invalidation_range)| {
5749 let head = selection.head().to_offset(&buffer);
5750 invalidation_range.start <= head && invalidation_range.end >= head
5751 })
5752 } else {
5753 false
5754 };
5755
5756 if all_selections_inside_invalidation_ranges {
5757 break;
5758 } else {
5759 self.pop();
5760 }
5761 }
5762 }
5763}
5764
5765impl<T> Default for InvalidationStack<T> {
5766 fn default() -> Self {
5767 Self(Default::default())
5768 }
5769}
5770
5771impl<T> Deref for InvalidationStack<T> {
5772 type Target = Vec<T>;
5773
5774 fn deref(&self) -> &Self::Target {
5775 &self.0
5776 }
5777}
5778
5779impl<T> DerefMut for InvalidationStack<T> {
5780 fn deref_mut(&mut self) -> &mut Self::Target {
5781 &mut self.0
5782 }
5783}
5784
5785impl InvalidationRegion for BracketPairState {
5786 fn ranges(&self) -> &[Range<Anchor>] {
5787 &self.ranges
5788 }
5789}
5790
5791impl InvalidationRegion for SnippetState {
5792 fn ranges(&self) -> &[Range<Anchor>] {
5793 &self.ranges[self.active_index]
5794 }
5795}
5796
5797impl Deref for EditorStyle {
5798 type Target = theme::Editor;
5799
5800 fn deref(&self) -> &Self::Target {
5801 &self.theme
5802 }
5803}
5804
5805pub fn diagnostic_block_renderer(
5806 diagnostic: Diagnostic,
5807 is_valid: bool,
5808 settings: watch::Receiver<Settings>,
5809) -> RenderBlock {
5810 let mut highlighted_lines = Vec::new();
5811 for line in diagnostic.message.lines() {
5812 highlighted_lines.push(highlight_diagnostic_message(line));
5813 }
5814
5815 Arc::new(move |cx: &BlockContext| {
5816 let settings = settings.borrow();
5817 let theme = &settings.theme.editor;
5818 let style = diagnostic_style(diagnostic.severity, is_valid, theme);
5819 let font_size = (style.text_scale_factor * settings.buffer_font_size).round();
5820 Flex::column()
5821 .with_children(highlighted_lines.iter().map(|(line, highlights)| {
5822 Label::new(
5823 line.clone(),
5824 style.message.clone().with_font_size(font_size),
5825 )
5826 .with_highlights(highlights.clone())
5827 .contained()
5828 .with_margin_left(cx.anchor_x)
5829 .boxed()
5830 }))
5831 .aligned()
5832 .left()
5833 .boxed()
5834 })
5835}
5836
5837pub fn highlight_diagnostic_message(message: &str) -> (String, Vec<usize>) {
5838 let mut message_without_backticks = String::new();
5839 let mut prev_offset = 0;
5840 let mut inside_block = false;
5841 let mut highlights = Vec::new();
5842 for (match_ix, (offset, _)) in message
5843 .match_indices('`')
5844 .chain([(message.len(), "")])
5845 .enumerate()
5846 {
5847 message_without_backticks.push_str(&message[prev_offset..offset]);
5848 if inside_block {
5849 highlights.extend(prev_offset - match_ix..offset - match_ix);
5850 }
5851
5852 inside_block = !inside_block;
5853 prev_offset = offset + 1;
5854 }
5855
5856 (message_without_backticks, highlights)
5857}
5858
5859pub fn diagnostic_style(
5860 severity: DiagnosticSeverity,
5861 valid: bool,
5862 theme: &theme::Editor,
5863) -> DiagnosticStyle {
5864 match (severity, valid) {
5865 (DiagnosticSeverity::ERROR, true) => theme.error_diagnostic.clone(),
5866 (DiagnosticSeverity::ERROR, false) => theme.invalid_error_diagnostic.clone(),
5867 (DiagnosticSeverity::WARNING, true) => theme.warning_diagnostic.clone(),
5868 (DiagnosticSeverity::WARNING, false) => theme.invalid_warning_diagnostic.clone(),
5869 (DiagnosticSeverity::INFORMATION, true) => theme.information_diagnostic.clone(),
5870 (DiagnosticSeverity::INFORMATION, false) => theme.invalid_information_diagnostic.clone(),
5871 (DiagnosticSeverity::HINT, true) => theme.hint_diagnostic.clone(),
5872 (DiagnosticSeverity::HINT, false) => theme.invalid_hint_diagnostic.clone(),
5873 _ => theme.invalid_hint_diagnostic.clone(),
5874 }
5875}
5876
5877pub fn combine_syntax_and_fuzzy_match_highlights(
5878 text: &str,
5879 default_style: HighlightStyle,
5880 syntax_ranges: impl Iterator<Item = (Range<usize>, HighlightStyle)>,
5881 match_indices: &[usize],
5882) -> Vec<(Range<usize>, HighlightStyle)> {
5883 let mut result = Vec::new();
5884 let mut match_indices = match_indices.iter().copied().peekable();
5885
5886 for (range, mut syntax_highlight) in syntax_ranges.chain([(usize::MAX..0, Default::default())])
5887 {
5888 syntax_highlight.font_properties.weight(Default::default());
5889
5890 // Add highlights for any fuzzy match characters before the next
5891 // syntax highlight range.
5892 while let Some(&match_index) = match_indices.peek() {
5893 if match_index >= range.start {
5894 break;
5895 }
5896 match_indices.next();
5897 let end_index = char_ix_after(match_index, text);
5898 let mut match_style = default_style;
5899 match_style.font_properties.weight(fonts::Weight::BOLD);
5900 result.push((match_index..end_index, match_style));
5901 }
5902
5903 if range.start == usize::MAX {
5904 break;
5905 }
5906
5907 // Add highlights for any fuzzy match characters within the
5908 // syntax highlight range.
5909 let mut offset = range.start;
5910 while let Some(&match_index) = match_indices.peek() {
5911 if match_index >= range.end {
5912 break;
5913 }
5914
5915 match_indices.next();
5916 if match_index > offset {
5917 result.push((offset..match_index, syntax_highlight));
5918 }
5919
5920 let mut end_index = char_ix_after(match_index, text);
5921 while let Some(&next_match_index) = match_indices.peek() {
5922 if next_match_index == end_index && next_match_index < range.end {
5923 end_index = char_ix_after(next_match_index, text);
5924 match_indices.next();
5925 } else {
5926 break;
5927 }
5928 }
5929
5930 let mut match_style = syntax_highlight;
5931 match_style.font_properties.weight(fonts::Weight::BOLD);
5932 result.push((match_index..end_index, match_style));
5933 offset = end_index;
5934 }
5935
5936 if offset < range.end {
5937 result.push((offset..range.end, syntax_highlight));
5938 }
5939 }
5940
5941 fn char_ix_after(ix: usize, text: &str) -> usize {
5942 ix + text[ix..].chars().next().unwrap().len_utf8()
5943 }
5944
5945 result
5946}
5947
5948pub fn styled_runs_for_code_label<'a>(
5949 label: &'a CodeLabel,
5950 default_color: Color,
5951 syntax_theme: &'a theme::SyntaxTheme,
5952) -> impl 'a + Iterator<Item = (Range<usize>, HighlightStyle)> {
5953 const MUTED_OPACITY: usize = 165;
5954
5955 let mut muted_default_style = HighlightStyle {
5956 color: default_color,
5957 ..Default::default()
5958 };
5959 muted_default_style.color.a = ((default_color.a as usize * MUTED_OPACITY) / 255) as u8;
5960
5961 let mut prev_end = label.filter_range.end;
5962 label
5963 .runs
5964 .iter()
5965 .enumerate()
5966 .flat_map(move |(ix, (range, highlight_id))| {
5967 let style = if let Some(style) = highlight_id.style(syntax_theme) {
5968 style
5969 } else {
5970 return Default::default();
5971 };
5972 let mut muted_style = style.clone();
5973 muted_style.color.a = ((style.color.a as usize * MUTED_OPACITY) / 255) as u8;
5974
5975 let mut runs = SmallVec::<[(Range<usize>, HighlightStyle); 3]>::new();
5976 if range.start >= label.filter_range.end {
5977 if range.start > prev_end {
5978 runs.push((prev_end..range.start, muted_default_style));
5979 }
5980 runs.push((range.clone(), muted_style));
5981 } else if range.end <= label.filter_range.end {
5982 runs.push((range.clone(), style));
5983 } else {
5984 runs.push((range.start..label.filter_range.end, style));
5985 runs.push((label.filter_range.end..range.end, muted_style));
5986 }
5987 prev_end = cmp::max(prev_end, range.end);
5988
5989 if ix + 1 == label.runs.len() && label.text.len() > prev_end {
5990 runs.push((prev_end..label.text.len(), muted_default_style));
5991 }
5992
5993 runs
5994 })
5995}
5996
5997#[cfg(test)]
5998mod tests {
5999 use super::*;
6000 use language::{LanguageConfig, LanguageServerConfig};
6001 use lsp::FakeLanguageServer;
6002 use project::FakeFs;
6003 use smol::stream::StreamExt;
6004 use std::{cell::RefCell, rc::Rc, time::Instant};
6005 use text::Point;
6006 use unindent::Unindent;
6007 use util::test::sample_text;
6008
6009 #[gpui::test]
6010 fn test_undo_redo_with_selection_restoration(cx: &mut MutableAppContext) {
6011 let mut now = Instant::now();
6012 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
6013 let group_interval = buffer.read(cx).transaction_group_interval();
6014 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6015 let settings = Settings::test(cx);
6016 let (_, editor) = cx.add_window(Default::default(), |cx| {
6017 build_editor(buffer.clone(), settings, cx)
6018 });
6019
6020 editor.update(cx, |editor, cx| {
6021 editor.start_transaction_at(now, cx);
6022 editor.select_ranges([2..4], None, cx);
6023 editor.insert("cd", cx);
6024 editor.end_transaction_at(now, cx);
6025 assert_eq!(editor.text(cx), "12cd56");
6026 assert_eq!(editor.selected_ranges(cx), vec![4..4]);
6027
6028 editor.start_transaction_at(now, cx);
6029 editor.select_ranges([4..5], None, cx);
6030 editor.insert("e", cx);
6031 editor.end_transaction_at(now, cx);
6032 assert_eq!(editor.text(cx), "12cde6");
6033 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
6034
6035 now += group_interval + Duration::from_millis(1);
6036 editor.select_ranges([2..2], None, cx);
6037
6038 // Simulate an edit in another editor
6039 buffer.update(cx, |buffer, cx| {
6040 buffer.start_transaction_at(now, cx);
6041 buffer.edit([0..1], "a", cx);
6042 buffer.edit([1..1], "b", cx);
6043 buffer.end_transaction_at(now, cx);
6044 });
6045
6046 assert_eq!(editor.text(cx), "ab2cde6");
6047 assert_eq!(editor.selected_ranges(cx), vec![3..3]);
6048
6049 // Last transaction happened past the group interval in a different editor.
6050 // Undo it individually and don't restore selections.
6051 editor.undo(&Undo, cx);
6052 assert_eq!(editor.text(cx), "12cde6");
6053 assert_eq!(editor.selected_ranges(cx), vec![2..2]);
6054
6055 // First two transactions happened within the group interval in this editor.
6056 // Undo them together and restore selections.
6057 editor.undo(&Undo, cx);
6058 editor.undo(&Undo, cx); // Undo stack is empty here, so this is a no-op.
6059 assert_eq!(editor.text(cx), "123456");
6060 assert_eq!(editor.selected_ranges(cx), vec![0..0]);
6061
6062 // Redo the first two transactions together.
6063 editor.redo(&Redo, cx);
6064 assert_eq!(editor.text(cx), "12cde6");
6065 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
6066
6067 // Redo the last transaction on its own.
6068 editor.redo(&Redo, cx);
6069 assert_eq!(editor.text(cx), "ab2cde6");
6070 assert_eq!(editor.selected_ranges(cx), vec![6..6]);
6071
6072 // Test empty transactions.
6073 editor.start_transaction_at(now, cx);
6074 editor.end_transaction_at(now, cx);
6075 editor.undo(&Undo, cx);
6076 assert_eq!(editor.text(cx), "12cde6");
6077 });
6078 }
6079
6080 #[gpui::test]
6081 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
6082 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6083 let settings = Settings::test(cx);
6084 let (_, editor) =
6085 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6086
6087 editor.update(cx, |view, cx| {
6088 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
6089 });
6090
6091 assert_eq!(
6092 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6093 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
6094 );
6095
6096 editor.update(cx, |view, cx| {
6097 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6098 });
6099
6100 assert_eq!(
6101 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6102 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6103 );
6104
6105 editor.update(cx, |view, cx| {
6106 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6107 });
6108
6109 assert_eq!(
6110 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6111 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
6112 );
6113
6114 editor.update(cx, |view, cx| {
6115 view.end_selection(cx);
6116 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6117 });
6118
6119 assert_eq!(
6120 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6121 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
6122 );
6123
6124 editor.update(cx, |view, cx| {
6125 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
6126 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
6127 });
6128
6129 assert_eq!(
6130 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6131 [
6132 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
6133 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
6134 ]
6135 );
6136
6137 editor.update(cx, |view, cx| {
6138 view.end_selection(cx);
6139 });
6140
6141 assert_eq!(
6142 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6143 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
6144 );
6145 }
6146
6147 #[gpui::test]
6148 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
6149 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6150 let settings = Settings::test(cx);
6151 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6152
6153 view.update(cx, |view, cx| {
6154 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
6155 assert_eq!(
6156 view.selected_display_ranges(cx),
6157 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
6158 );
6159 });
6160
6161 view.update(cx, |view, cx| {
6162 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6163 assert_eq!(
6164 view.selected_display_ranges(cx),
6165 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6166 );
6167 });
6168
6169 view.update(cx, |view, cx| {
6170 view.cancel(&Cancel, cx);
6171 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6172 assert_eq!(
6173 view.selected_display_ranges(cx),
6174 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6175 );
6176 });
6177 }
6178
6179 #[gpui::test]
6180 fn test_navigation_history(cx: &mut gpui::MutableAppContext) {
6181 cx.add_window(Default::default(), |cx| {
6182 use workspace::ItemView;
6183 let nav_history = Rc::new(RefCell::new(workspace::NavHistory::default()));
6184 let settings = Settings::test(&cx);
6185 let buffer = MultiBuffer::build_simple(&sample_text(30, 5, 'a'), cx);
6186 let mut editor = build_editor(buffer.clone(), settings, cx);
6187 editor.nav_history = Some(ItemNavHistory::new(nav_history.clone(), &cx.handle()));
6188
6189 // Move the cursor a small distance.
6190 // Nothing is added to the navigation history.
6191 editor.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
6192 editor.select_display_ranges(&[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)], cx);
6193 assert!(nav_history.borrow_mut().pop_backward().is_none());
6194
6195 // Move the cursor a large distance.
6196 // The history can jump back to the previous position.
6197 editor.select_display_ranges(&[DisplayPoint::new(13, 0)..DisplayPoint::new(13, 3)], cx);
6198 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
6199 editor.navigate(nav_entry.data.unwrap(), cx);
6200 assert_eq!(nav_entry.item_view.id(), cx.view_id());
6201 assert_eq!(
6202 editor.selected_display_ranges(cx),
6203 &[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)]
6204 );
6205
6206 // Move the cursor a small distance via the mouse.
6207 // Nothing is added to the navigation history.
6208 editor.begin_selection(DisplayPoint::new(5, 0), false, 1, cx);
6209 editor.end_selection(cx);
6210 assert_eq!(
6211 editor.selected_display_ranges(cx),
6212 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
6213 );
6214 assert!(nav_history.borrow_mut().pop_backward().is_none());
6215
6216 // Move the cursor a large distance via the mouse.
6217 // The history can jump back to the previous position.
6218 editor.begin_selection(DisplayPoint::new(15, 0), false, 1, cx);
6219 editor.end_selection(cx);
6220 assert_eq!(
6221 editor.selected_display_ranges(cx),
6222 &[DisplayPoint::new(15, 0)..DisplayPoint::new(15, 0)]
6223 );
6224 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
6225 editor.navigate(nav_entry.data.unwrap(), cx);
6226 assert_eq!(nav_entry.item_view.id(), cx.view_id());
6227 assert_eq!(
6228 editor.selected_display_ranges(cx),
6229 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
6230 );
6231
6232 editor
6233 });
6234 }
6235
6236 #[gpui::test]
6237 fn test_cancel(cx: &mut gpui::MutableAppContext) {
6238 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6239 let settings = Settings::test(cx);
6240 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6241
6242 view.update(cx, |view, cx| {
6243 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
6244 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6245 view.end_selection(cx);
6246
6247 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
6248 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
6249 view.end_selection(cx);
6250 assert_eq!(
6251 view.selected_display_ranges(cx),
6252 [
6253 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
6254 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
6255 ]
6256 );
6257 });
6258
6259 view.update(cx, |view, cx| {
6260 view.cancel(&Cancel, cx);
6261 assert_eq!(
6262 view.selected_display_ranges(cx),
6263 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
6264 );
6265 });
6266
6267 view.update(cx, |view, cx| {
6268 view.cancel(&Cancel, cx);
6269 assert_eq!(
6270 view.selected_display_ranges(cx),
6271 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
6272 );
6273 });
6274 }
6275
6276 #[gpui::test]
6277 fn test_fold(cx: &mut gpui::MutableAppContext) {
6278 let buffer = MultiBuffer::build_simple(
6279 &"
6280 impl Foo {
6281 // Hello!
6282
6283 fn a() {
6284 1
6285 }
6286
6287 fn b() {
6288 2
6289 }
6290
6291 fn c() {
6292 3
6293 }
6294 }
6295 "
6296 .unindent(),
6297 cx,
6298 );
6299 let settings = Settings::test(&cx);
6300 let (_, view) = cx.add_window(Default::default(), |cx| {
6301 build_editor(buffer.clone(), settings, cx)
6302 });
6303
6304 view.update(cx, |view, cx| {
6305 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx);
6306 view.fold(&Fold, cx);
6307 assert_eq!(
6308 view.display_text(cx),
6309 "
6310 impl Foo {
6311 // Hello!
6312
6313 fn a() {
6314 1
6315 }
6316
6317 fn b() {…
6318 }
6319
6320 fn c() {…
6321 }
6322 }
6323 "
6324 .unindent(),
6325 );
6326
6327 view.fold(&Fold, cx);
6328 assert_eq!(
6329 view.display_text(cx),
6330 "
6331 impl Foo {…
6332 }
6333 "
6334 .unindent(),
6335 );
6336
6337 view.unfold(&Unfold, cx);
6338 assert_eq!(
6339 view.display_text(cx),
6340 "
6341 impl Foo {
6342 // Hello!
6343
6344 fn a() {
6345 1
6346 }
6347
6348 fn b() {…
6349 }
6350
6351 fn c() {…
6352 }
6353 }
6354 "
6355 .unindent(),
6356 );
6357
6358 view.unfold(&Unfold, cx);
6359 assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text());
6360 });
6361 }
6362
6363 #[gpui::test]
6364 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
6365 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
6366 let settings = Settings::test(&cx);
6367 let (_, view) = cx.add_window(Default::default(), |cx| {
6368 build_editor(buffer.clone(), settings, cx)
6369 });
6370
6371 buffer.update(cx, |buffer, cx| {
6372 buffer.edit(
6373 vec![
6374 Point::new(1, 0)..Point::new(1, 0),
6375 Point::new(1, 1)..Point::new(1, 1),
6376 ],
6377 "\t",
6378 cx,
6379 );
6380 });
6381
6382 view.update(cx, |view, cx| {
6383 assert_eq!(
6384 view.selected_display_ranges(cx),
6385 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6386 );
6387
6388 view.move_down(&MoveDown, cx);
6389 assert_eq!(
6390 view.selected_display_ranges(cx),
6391 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6392 );
6393
6394 view.move_right(&MoveRight, cx);
6395 assert_eq!(
6396 view.selected_display_ranges(cx),
6397 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
6398 );
6399
6400 view.move_left(&MoveLeft, cx);
6401 assert_eq!(
6402 view.selected_display_ranges(cx),
6403 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6404 );
6405
6406 view.move_up(&MoveUp, cx);
6407 assert_eq!(
6408 view.selected_display_ranges(cx),
6409 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6410 );
6411
6412 view.move_to_end(&MoveToEnd, cx);
6413 assert_eq!(
6414 view.selected_display_ranges(cx),
6415 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
6416 );
6417
6418 view.move_to_beginning(&MoveToBeginning, cx);
6419 assert_eq!(
6420 view.selected_display_ranges(cx),
6421 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6422 );
6423
6424 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx);
6425 view.select_to_beginning(&SelectToBeginning, cx);
6426 assert_eq!(
6427 view.selected_display_ranges(cx),
6428 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
6429 );
6430
6431 view.select_to_end(&SelectToEnd, cx);
6432 assert_eq!(
6433 view.selected_display_ranges(cx),
6434 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
6435 );
6436 });
6437 }
6438
6439 #[gpui::test]
6440 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
6441 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
6442 let settings = Settings::test(&cx);
6443 let (_, view) = cx.add_window(Default::default(), |cx| {
6444 build_editor(buffer.clone(), settings, cx)
6445 });
6446
6447 assert_eq!('ⓐ'.len_utf8(), 3);
6448 assert_eq!('α'.len_utf8(), 2);
6449
6450 view.update(cx, |view, cx| {
6451 view.fold_ranges(
6452 vec![
6453 Point::new(0, 6)..Point::new(0, 12),
6454 Point::new(1, 2)..Point::new(1, 4),
6455 Point::new(2, 4)..Point::new(2, 8),
6456 ],
6457 cx,
6458 );
6459 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
6460
6461 view.move_right(&MoveRight, cx);
6462 assert_eq!(
6463 view.selected_display_ranges(cx),
6464 &[empty_range(0, "ⓐ".len())]
6465 );
6466 view.move_right(&MoveRight, cx);
6467 assert_eq!(
6468 view.selected_display_ranges(cx),
6469 &[empty_range(0, "ⓐⓑ".len())]
6470 );
6471 view.move_right(&MoveRight, cx);
6472 assert_eq!(
6473 view.selected_display_ranges(cx),
6474 &[empty_range(0, "ⓐⓑ…".len())]
6475 );
6476
6477 view.move_down(&MoveDown, cx);
6478 assert_eq!(
6479 view.selected_display_ranges(cx),
6480 &[empty_range(1, "ab…".len())]
6481 );
6482 view.move_left(&MoveLeft, cx);
6483 assert_eq!(
6484 view.selected_display_ranges(cx),
6485 &[empty_range(1, "ab".len())]
6486 );
6487 view.move_left(&MoveLeft, cx);
6488 assert_eq!(
6489 view.selected_display_ranges(cx),
6490 &[empty_range(1, "a".len())]
6491 );
6492
6493 view.move_down(&MoveDown, cx);
6494 assert_eq!(
6495 view.selected_display_ranges(cx),
6496 &[empty_range(2, "α".len())]
6497 );
6498 view.move_right(&MoveRight, cx);
6499 assert_eq!(
6500 view.selected_display_ranges(cx),
6501 &[empty_range(2, "αβ".len())]
6502 );
6503 view.move_right(&MoveRight, cx);
6504 assert_eq!(
6505 view.selected_display_ranges(cx),
6506 &[empty_range(2, "αβ…".len())]
6507 );
6508 view.move_right(&MoveRight, cx);
6509 assert_eq!(
6510 view.selected_display_ranges(cx),
6511 &[empty_range(2, "αβ…ε".len())]
6512 );
6513
6514 view.move_up(&MoveUp, cx);
6515 assert_eq!(
6516 view.selected_display_ranges(cx),
6517 &[empty_range(1, "ab…e".len())]
6518 );
6519 view.move_up(&MoveUp, cx);
6520 assert_eq!(
6521 view.selected_display_ranges(cx),
6522 &[empty_range(0, "ⓐⓑ…ⓔ".len())]
6523 );
6524 view.move_left(&MoveLeft, cx);
6525 assert_eq!(
6526 view.selected_display_ranges(cx),
6527 &[empty_range(0, "ⓐⓑ…".len())]
6528 );
6529 view.move_left(&MoveLeft, cx);
6530 assert_eq!(
6531 view.selected_display_ranges(cx),
6532 &[empty_range(0, "ⓐⓑ".len())]
6533 );
6534 view.move_left(&MoveLeft, cx);
6535 assert_eq!(
6536 view.selected_display_ranges(cx),
6537 &[empty_range(0, "ⓐ".len())]
6538 );
6539 });
6540 }
6541
6542 #[gpui::test]
6543 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
6544 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
6545 let settings = Settings::test(&cx);
6546 let (_, view) = cx.add_window(Default::default(), |cx| {
6547 build_editor(buffer.clone(), settings, cx)
6548 });
6549 view.update(cx, |view, cx| {
6550 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx);
6551 view.move_down(&MoveDown, cx);
6552 assert_eq!(
6553 view.selected_display_ranges(cx),
6554 &[empty_range(1, "abcd".len())]
6555 );
6556
6557 view.move_down(&MoveDown, cx);
6558 assert_eq!(
6559 view.selected_display_ranges(cx),
6560 &[empty_range(2, "αβγ".len())]
6561 );
6562
6563 view.move_down(&MoveDown, cx);
6564 assert_eq!(
6565 view.selected_display_ranges(cx),
6566 &[empty_range(3, "abcd".len())]
6567 );
6568
6569 view.move_down(&MoveDown, cx);
6570 assert_eq!(
6571 view.selected_display_ranges(cx),
6572 &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
6573 );
6574
6575 view.move_up(&MoveUp, cx);
6576 assert_eq!(
6577 view.selected_display_ranges(cx),
6578 &[empty_range(3, "abcd".len())]
6579 );
6580
6581 view.move_up(&MoveUp, cx);
6582 assert_eq!(
6583 view.selected_display_ranges(cx),
6584 &[empty_range(2, "αβγ".len())]
6585 );
6586 });
6587 }
6588
6589 #[gpui::test]
6590 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
6591 let buffer = MultiBuffer::build_simple("abc\n def", cx);
6592 let settings = Settings::test(&cx);
6593 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6594 view.update(cx, |view, cx| {
6595 view.select_display_ranges(
6596 &[
6597 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6598 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
6599 ],
6600 cx,
6601 );
6602 });
6603
6604 view.update(cx, |view, cx| {
6605 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6606 assert_eq!(
6607 view.selected_display_ranges(cx),
6608 &[
6609 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6610 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6611 ]
6612 );
6613 });
6614
6615 view.update(cx, |view, cx| {
6616 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6617 assert_eq!(
6618 view.selected_display_ranges(cx),
6619 &[
6620 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6621 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6622 ]
6623 );
6624 });
6625
6626 view.update(cx, |view, cx| {
6627 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6628 assert_eq!(
6629 view.selected_display_ranges(cx),
6630 &[
6631 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6632 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6633 ]
6634 );
6635 });
6636
6637 view.update(cx, |view, cx| {
6638 view.move_to_end_of_line(&MoveToEndOfLine, cx);
6639 assert_eq!(
6640 view.selected_display_ranges(cx),
6641 &[
6642 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6643 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6644 ]
6645 );
6646 });
6647
6648 // Moving to the end of line again is a no-op.
6649 view.update(cx, |view, cx| {
6650 view.move_to_end_of_line(&MoveToEndOfLine, cx);
6651 assert_eq!(
6652 view.selected_display_ranges(cx),
6653 &[
6654 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6655 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6656 ]
6657 );
6658 });
6659
6660 view.update(cx, |view, cx| {
6661 view.move_left(&MoveLeft, cx);
6662 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6663 assert_eq!(
6664 view.selected_display_ranges(cx),
6665 &[
6666 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6667 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
6668 ]
6669 );
6670 });
6671
6672 view.update(cx, |view, cx| {
6673 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6674 assert_eq!(
6675 view.selected_display_ranges(cx),
6676 &[
6677 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6678 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
6679 ]
6680 );
6681 });
6682
6683 view.update(cx, |view, cx| {
6684 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6685 assert_eq!(
6686 view.selected_display_ranges(cx),
6687 &[
6688 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6689 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
6690 ]
6691 );
6692 });
6693
6694 view.update(cx, |view, cx| {
6695 view.select_to_end_of_line(&SelectToEndOfLine(true), cx);
6696 assert_eq!(
6697 view.selected_display_ranges(cx),
6698 &[
6699 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
6700 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
6701 ]
6702 );
6703 });
6704
6705 view.update(cx, |view, cx| {
6706 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
6707 assert_eq!(view.display_text(cx), "ab\n de");
6708 assert_eq!(
6709 view.selected_display_ranges(cx),
6710 &[
6711 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6712 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
6713 ]
6714 );
6715 });
6716
6717 view.update(cx, |view, cx| {
6718 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
6719 assert_eq!(view.display_text(cx), "\n");
6720 assert_eq!(
6721 view.selected_display_ranges(cx),
6722 &[
6723 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6724 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6725 ]
6726 );
6727 });
6728 }
6729
6730 #[gpui::test]
6731 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
6732 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
6733 let settings = Settings::test(&cx);
6734 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6735 view.update(cx, |view, cx| {
6736 view.select_display_ranges(
6737 &[
6738 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
6739 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
6740 ],
6741 cx,
6742 );
6743 });
6744
6745 view.update(cx, |view, cx| {
6746 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6747 assert_eq!(
6748 view.selected_display_ranges(cx),
6749 &[
6750 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
6751 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
6752 ]
6753 );
6754 });
6755
6756 view.update(cx, |view, cx| {
6757 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6758 assert_eq!(
6759 view.selected_display_ranges(cx),
6760 &[
6761 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
6762 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2),
6763 ]
6764 );
6765 });
6766
6767 view.update(cx, |view, cx| {
6768 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6769 assert_eq!(
6770 view.selected_display_ranges(cx),
6771 &[
6772 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
6773 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
6774 ]
6775 );
6776 });
6777
6778 view.update(cx, |view, cx| {
6779 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6780 assert_eq!(
6781 view.selected_display_ranges(cx),
6782 &[
6783 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6784 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6785 ]
6786 );
6787 });
6788
6789 view.update(cx, |view, cx| {
6790 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6791 assert_eq!(
6792 view.selected_display_ranges(cx),
6793 &[
6794 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6795 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 23),
6796 ]
6797 );
6798 });
6799
6800 view.update(cx, |view, cx| {
6801 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6802 assert_eq!(
6803 view.selected_display_ranges(cx),
6804 &[
6805 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6806 DisplayPoint::new(0, 24)..DisplayPoint::new(0, 24),
6807 ]
6808 );
6809 });
6810
6811 view.update(cx, |view, cx| {
6812 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6813 assert_eq!(
6814 view.selected_display_ranges(cx),
6815 &[
6816 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
6817 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6818 ]
6819 );
6820 });
6821
6822 view.update(cx, |view, cx| {
6823 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6824 assert_eq!(
6825 view.selected_display_ranges(cx),
6826 &[
6827 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
6828 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
6829 ]
6830 );
6831 });
6832
6833 view.update(cx, |view, cx| {
6834 view.move_right(&MoveRight, cx);
6835 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
6836 assert_eq!(
6837 view.selected_display_ranges(cx),
6838 &[
6839 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
6840 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
6841 ]
6842 );
6843 });
6844
6845 view.update(cx, |view, cx| {
6846 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
6847 assert_eq!(
6848 view.selected_display_ranges(cx),
6849 &[
6850 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 7),
6851 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 2),
6852 ]
6853 );
6854 });
6855
6856 view.update(cx, |view, cx| {
6857 view.select_to_next_word_boundary(&SelectToNextWordBoundary, cx);
6858 assert_eq!(
6859 view.selected_display_ranges(cx),
6860 &[
6861 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
6862 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
6863 ]
6864 );
6865 });
6866 }
6867
6868 #[gpui::test]
6869 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
6870 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
6871 let settings = Settings::test(&cx);
6872 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6873
6874 view.update(cx, |view, cx| {
6875 view.set_wrap_width(Some(140.), cx);
6876 assert_eq!(
6877 view.display_text(cx),
6878 "use one::{\n two::three::\n four::five\n};"
6879 );
6880
6881 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx);
6882
6883 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6884 assert_eq!(
6885 view.selected_display_ranges(cx),
6886 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
6887 );
6888
6889 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6890 assert_eq!(
6891 view.selected_display_ranges(cx),
6892 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
6893 );
6894
6895 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6896 assert_eq!(
6897 view.selected_display_ranges(cx),
6898 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
6899 );
6900
6901 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6902 assert_eq!(
6903 view.selected_display_ranges(cx),
6904 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
6905 );
6906
6907 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6908 assert_eq!(
6909 view.selected_display_ranges(cx),
6910 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
6911 );
6912
6913 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6914 assert_eq!(
6915 view.selected_display_ranges(cx),
6916 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
6917 );
6918 });
6919 }
6920
6921 #[gpui::test]
6922 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
6923 let buffer = MultiBuffer::build_simple("one two three four", cx);
6924 let settings = Settings::test(&cx);
6925 let (_, view) = cx.add_window(Default::default(), |cx| {
6926 build_editor(buffer.clone(), settings, cx)
6927 });
6928
6929 view.update(cx, |view, cx| {
6930 view.select_display_ranges(
6931 &[
6932 // an empty selection - the preceding word fragment is deleted
6933 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6934 // characters selected - they are deleted
6935 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
6936 ],
6937 cx,
6938 );
6939 view.delete_to_previous_word_boundary(&DeleteToPreviousWordBoundary, cx);
6940 });
6941
6942 assert_eq!(buffer.read(cx).read(cx).text(), "e two te four");
6943
6944 view.update(cx, |view, cx| {
6945 view.select_display_ranges(
6946 &[
6947 // an empty selection - the following word fragment is deleted
6948 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6949 // characters selected - they are deleted
6950 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
6951 ],
6952 cx,
6953 );
6954 view.delete_to_next_word_boundary(&DeleteToNextWordBoundary, cx);
6955 });
6956
6957 assert_eq!(buffer.read(cx).read(cx).text(), "e t te our");
6958 }
6959
6960 #[gpui::test]
6961 fn test_newline(cx: &mut gpui::MutableAppContext) {
6962 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
6963 let settings = Settings::test(&cx);
6964 let (_, view) = cx.add_window(Default::default(), |cx| {
6965 build_editor(buffer.clone(), settings, cx)
6966 });
6967
6968 view.update(cx, |view, cx| {
6969 view.select_display_ranges(
6970 &[
6971 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6972 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6973 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
6974 ],
6975 cx,
6976 );
6977
6978 view.newline(&Newline, cx);
6979 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
6980 });
6981 }
6982
6983 #[gpui::test]
6984 fn test_newline_with_old_selections(cx: &mut gpui::MutableAppContext) {
6985 let buffer = MultiBuffer::build_simple(
6986 "
6987 a
6988 b(
6989 X
6990 )
6991 c(
6992 X
6993 )
6994 "
6995 .unindent()
6996 .as_str(),
6997 cx,
6998 );
6999
7000 let settings = Settings::test(&cx);
7001 let (_, editor) = cx.add_window(Default::default(), |cx| {
7002 let mut editor = build_editor(buffer.clone(), settings, cx);
7003 editor.select_ranges(
7004 [
7005 Point::new(2, 4)..Point::new(2, 5),
7006 Point::new(5, 4)..Point::new(5, 5),
7007 ],
7008 None,
7009 cx,
7010 );
7011 editor
7012 });
7013
7014 // Edit the buffer directly, deleting ranges surrounding the editor's selections
7015 buffer.update(cx, |buffer, cx| {
7016 buffer.edit(
7017 [
7018 Point::new(1, 2)..Point::new(3, 0),
7019 Point::new(4, 2)..Point::new(6, 0),
7020 ],
7021 "",
7022 cx,
7023 );
7024 assert_eq!(
7025 buffer.read(cx).text(),
7026 "
7027 a
7028 b()
7029 c()
7030 "
7031 .unindent()
7032 );
7033 });
7034
7035 editor.update(cx, |editor, cx| {
7036 assert_eq!(
7037 editor.selected_ranges(cx),
7038 &[
7039 Point::new(1, 2)..Point::new(1, 2),
7040 Point::new(2, 2)..Point::new(2, 2),
7041 ],
7042 );
7043
7044 editor.newline(&Newline, cx);
7045 assert_eq!(
7046 editor.text(cx),
7047 "
7048 a
7049 b(
7050 )
7051 c(
7052 )
7053 "
7054 .unindent()
7055 );
7056
7057 // The selections are moved after the inserted newlines
7058 assert_eq!(
7059 editor.selected_ranges(cx),
7060 &[
7061 Point::new(2, 0)..Point::new(2, 0),
7062 Point::new(4, 0)..Point::new(4, 0),
7063 ],
7064 );
7065 });
7066 }
7067
7068 #[gpui::test]
7069 fn test_insert_with_old_selections(cx: &mut gpui::MutableAppContext) {
7070 let buffer = MultiBuffer::build_simple("a( X ), b( Y ), c( Z )", cx);
7071
7072 let settings = Settings::test(&cx);
7073 let (_, editor) = cx.add_window(Default::default(), |cx| {
7074 let mut editor = build_editor(buffer.clone(), settings, cx);
7075 editor.select_ranges([3..4, 11..12, 19..20], None, cx);
7076 editor
7077 });
7078
7079 // Edit the buffer directly, deleting ranges surrounding the editor's selections
7080 buffer.update(cx, |buffer, cx| {
7081 buffer.edit([2..5, 10..13, 18..21], "", cx);
7082 assert_eq!(buffer.read(cx).text(), "a(), b(), c()".unindent());
7083 });
7084
7085 editor.update(cx, |editor, cx| {
7086 assert_eq!(editor.selected_ranges(cx), &[2..2, 7..7, 12..12],);
7087
7088 editor.insert("Z", cx);
7089 assert_eq!(editor.text(cx), "a(Z), b(Z), c(Z)");
7090
7091 // The selections are moved after the inserted characters
7092 assert_eq!(editor.selected_ranges(cx), &[3..3, 9..9, 15..15],);
7093 });
7094 }
7095
7096 #[gpui::test]
7097 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
7098 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
7099 let settings = Settings::test(&cx);
7100 let (_, view) = cx.add_window(Default::default(), |cx| {
7101 build_editor(buffer.clone(), settings, cx)
7102 });
7103
7104 view.update(cx, |view, cx| {
7105 // two selections on the same line
7106 view.select_display_ranges(
7107 &[
7108 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
7109 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
7110 ],
7111 cx,
7112 );
7113
7114 // indent from mid-tabstop to full tabstop
7115 view.tab(&Tab, cx);
7116 assert_eq!(view.text(cx), " one two\nthree\n four");
7117 assert_eq!(
7118 view.selected_display_ranges(cx),
7119 &[
7120 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
7121 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
7122 ]
7123 );
7124
7125 // outdent from 1 tabstop to 0 tabstops
7126 view.outdent(&Outdent, cx);
7127 assert_eq!(view.text(cx), "one two\nthree\n four");
7128 assert_eq!(
7129 view.selected_display_ranges(cx),
7130 &[
7131 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
7132 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
7133 ]
7134 );
7135
7136 // select across line ending
7137 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx);
7138
7139 // indent and outdent affect only the preceding line
7140 view.tab(&Tab, cx);
7141 assert_eq!(view.text(cx), "one two\n three\n four");
7142 assert_eq!(
7143 view.selected_display_ranges(cx),
7144 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
7145 );
7146 view.outdent(&Outdent, cx);
7147 assert_eq!(view.text(cx), "one two\nthree\n four");
7148 assert_eq!(
7149 view.selected_display_ranges(cx),
7150 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
7151 );
7152
7153 // Ensure that indenting/outdenting works when the cursor is at column 0.
7154 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
7155 view.tab(&Tab, cx);
7156 assert_eq!(view.text(cx), "one two\n three\n four");
7157 assert_eq!(
7158 view.selected_display_ranges(cx),
7159 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
7160 );
7161
7162 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
7163 view.outdent(&Outdent, cx);
7164 assert_eq!(view.text(cx), "one two\nthree\n four");
7165 assert_eq!(
7166 view.selected_display_ranges(cx),
7167 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
7168 );
7169 });
7170 }
7171
7172 #[gpui::test]
7173 fn test_backspace(cx: &mut gpui::MutableAppContext) {
7174 let buffer =
7175 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
7176 let settings = Settings::test(&cx);
7177 let (_, view) = cx.add_window(Default::default(), |cx| {
7178 build_editor(buffer.clone(), settings, cx)
7179 });
7180
7181 view.update(cx, |view, cx| {
7182 view.select_display_ranges(
7183 &[
7184 // an empty selection - the preceding character is deleted
7185 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7186 // one character selected - it is deleted
7187 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7188 // a line suffix selected - it is deleted
7189 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
7190 ],
7191 cx,
7192 );
7193 view.backspace(&Backspace, cx);
7194 });
7195
7196 assert_eq!(
7197 buffer.read(cx).read(cx).text(),
7198 "oe two three\nfou five six\nseven ten\n"
7199 );
7200 }
7201
7202 #[gpui::test]
7203 fn test_delete(cx: &mut gpui::MutableAppContext) {
7204 let buffer =
7205 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
7206 let settings = Settings::test(&cx);
7207 let (_, view) = cx.add_window(Default::default(), |cx| {
7208 build_editor(buffer.clone(), settings, cx)
7209 });
7210
7211 view.update(cx, |view, cx| {
7212 view.select_display_ranges(
7213 &[
7214 // an empty selection - the following character is deleted
7215 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7216 // one character selected - it is deleted
7217 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7218 // a line suffix selected - it is deleted
7219 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
7220 ],
7221 cx,
7222 );
7223 view.delete(&Delete, cx);
7224 });
7225
7226 assert_eq!(
7227 buffer.read(cx).read(cx).text(),
7228 "on two three\nfou five six\nseven ten\n"
7229 );
7230 }
7231
7232 #[gpui::test]
7233 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
7234 let settings = Settings::test(&cx);
7235 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7236 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7237 view.update(cx, |view, cx| {
7238 view.select_display_ranges(
7239 &[
7240 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7241 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
7242 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7243 ],
7244 cx,
7245 );
7246 view.delete_line(&DeleteLine, cx);
7247 assert_eq!(view.display_text(cx), "ghi");
7248 assert_eq!(
7249 view.selected_display_ranges(cx),
7250 vec![
7251 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7252 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
7253 ]
7254 );
7255 });
7256
7257 let settings = Settings::test(&cx);
7258 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7259 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7260 view.update(cx, |view, cx| {
7261 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx);
7262 view.delete_line(&DeleteLine, cx);
7263 assert_eq!(view.display_text(cx), "ghi\n");
7264 assert_eq!(
7265 view.selected_display_ranges(cx),
7266 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
7267 );
7268 });
7269 }
7270
7271 #[gpui::test]
7272 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
7273 let settings = Settings::test(&cx);
7274 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7275 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7276 view.update(cx, |view, cx| {
7277 view.select_display_ranges(
7278 &[
7279 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7280 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7281 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7282 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7283 ],
7284 cx,
7285 );
7286 view.duplicate_line(&DuplicateLine, cx);
7287 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
7288 assert_eq!(
7289 view.selected_display_ranges(cx),
7290 vec![
7291 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
7292 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7293 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7294 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
7295 ]
7296 );
7297 });
7298
7299 let settings = Settings::test(&cx);
7300 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7301 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7302 view.update(cx, |view, cx| {
7303 view.select_display_ranges(
7304 &[
7305 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
7306 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
7307 ],
7308 cx,
7309 );
7310 view.duplicate_line(&DuplicateLine, cx);
7311 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
7312 assert_eq!(
7313 view.selected_display_ranges(cx),
7314 vec![
7315 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
7316 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
7317 ]
7318 );
7319 });
7320 }
7321
7322 #[gpui::test]
7323 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
7324 let settings = Settings::test(&cx);
7325 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
7326 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7327 view.update(cx, |view, cx| {
7328 view.fold_ranges(
7329 vec![
7330 Point::new(0, 2)..Point::new(1, 2),
7331 Point::new(2, 3)..Point::new(4, 1),
7332 Point::new(7, 0)..Point::new(8, 4),
7333 ],
7334 cx,
7335 );
7336 view.select_display_ranges(
7337 &[
7338 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7339 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7340 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7341 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
7342 ],
7343 cx,
7344 );
7345 assert_eq!(
7346 view.display_text(cx),
7347 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
7348 );
7349
7350 view.move_line_up(&MoveLineUp, cx);
7351 assert_eq!(
7352 view.display_text(cx),
7353 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
7354 );
7355 assert_eq!(
7356 view.selected_display_ranges(cx),
7357 vec![
7358 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7359 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7360 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
7361 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
7362 ]
7363 );
7364 });
7365
7366 view.update(cx, |view, cx| {
7367 view.move_line_down(&MoveLineDown, cx);
7368 assert_eq!(
7369 view.display_text(cx),
7370 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
7371 );
7372 assert_eq!(
7373 view.selected_display_ranges(cx),
7374 vec![
7375 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7376 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7377 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7378 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
7379 ]
7380 );
7381 });
7382
7383 view.update(cx, |view, cx| {
7384 view.move_line_down(&MoveLineDown, cx);
7385 assert_eq!(
7386 view.display_text(cx),
7387 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
7388 );
7389 assert_eq!(
7390 view.selected_display_ranges(cx),
7391 vec![
7392 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7393 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7394 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7395 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
7396 ]
7397 );
7398 });
7399
7400 view.update(cx, |view, cx| {
7401 view.move_line_up(&MoveLineUp, cx);
7402 assert_eq!(
7403 view.display_text(cx),
7404 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
7405 );
7406 assert_eq!(
7407 view.selected_display_ranges(cx),
7408 vec![
7409 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7410 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7411 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
7412 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
7413 ]
7414 );
7415 });
7416 }
7417
7418 #[gpui::test]
7419 fn test_move_line_up_down_with_blocks(cx: &mut gpui::MutableAppContext) {
7420 let settings = Settings::test(&cx);
7421 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
7422 let snapshot = buffer.read(cx).snapshot(cx);
7423 let (_, editor) =
7424 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7425 editor.update(cx, |editor, cx| {
7426 editor.insert_blocks(
7427 [BlockProperties {
7428 position: snapshot.anchor_after(Point::new(2, 0)),
7429 disposition: BlockDisposition::Below,
7430 height: 1,
7431 render: Arc::new(|_| Empty::new().boxed()),
7432 }],
7433 cx,
7434 );
7435 editor.select_ranges([Point::new(2, 0)..Point::new(2, 0)], None, cx);
7436 editor.move_line_down(&MoveLineDown, cx);
7437 });
7438 }
7439
7440 #[gpui::test]
7441 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
7442 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
7443 let settings = Settings::test(&cx);
7444 let view = cx
7445 .add_window(Default::default(), |cx| {
7446 build_editor(buffer.clone(), settings, cx)
7447 })
7448 .1;
7449
7450 // Cut with three selections. Clipboard text is divided into three slices.
7451 view.update(cx, |view, cx| {
7452 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
7453 view.cut(&Cut, cx);
7454 assert_eq!(view.display_text(cx), "two four six ");
7455 });
7456
7457 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
7458 view.update(cx, |view, cx| {
7459 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
7460 view.paste(&Paste, cx);
7461 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
7462 assert_eq!(
7463 view.selected_display_ranges(cx),
7464 &[
7465 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
7466 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
7467 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
7468 ]
7469 );
7470 });
7471
7472 // Paste again but with only two cursors. Since the number of cursors doesn't
7473 // match the number of slices in the clipboard, the entire clipboard text
7474 // is pasted at each cursor.
7475 view.update(cx, |view, cx| {
7476 view.select_ranges(vec![0..0, 31..31], None, cx);
7477 view.handle_input(&Input("( ".into()), cx);
7478 view.paste(&Paste, cx);
7479 view.handle_input(&Input(") ".into()), cx);
7480 assert_eq!(
7481 view.display_text(cx),
7482 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7483 );
7484 });
7485
7486 view.update(cx, |view, cx| {
7487 view.select_ranges(vec![0..0], None, cx);
7488 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
7489 assert_eq!(
7490 view.display_text(cx),
7491 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7492 );
7493 });
7494
7495 // Cut with three selections, one of which is full-line.
7496 view.update(cx, |view, cx| {
7497 view.select_display_ranges(
7498 &[
7499 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
7500 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7501 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
7502 ],
7503 cx,
7504 );
7505 view.cut(&Cut, cx);
7506 assert_eq!(
7507 view.display_text(cx),
7508 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7509 );
7510 });
7511
7512 // Paste with three selections, noticing how the copied selection that was full-line
7513 // gets inserted before the second cursor.
7514 view.update(cx, |view, cx| {
7515 view.select_display_ranges(
7516 &[
7517 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7518 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7519 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
7520 ],
7521 cx,
7522 );
7523 view.paste(&Paste, cx);
7524 assert_eq!(
7525 view.display_text(cx),
7526 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
7527 );
7528 assert_eq!(
7529 view.selected_display_ranges(cx),
7530 &[
7531 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7532 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7533 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
7534 ]
7535 );
7536 });
7537
7538 // Copy with a single cursor only, which writes the whole line into the clipboard.
7539 view.update(cx, |view, cx| {
7540 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx);
7541 view.copy(&Copy, cx);
7542 });
7543
7544 // Paste with three selections, noticing how the copied full-line selection is inserted
7545 // before the empty selections but replaces the selection that is non-empty.
7546 view.update(cx, |view, cx| {
7547 view.select_display_ranges(
7548 &[
7549 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7550 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
7551 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7552 ],
7553 cx,
7554 );
7555 view.paste(&Paste, cx);
7556 assert_eq!(
7557 view.display_text(cx),
7558 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
7559 );
7560 assert_eq!(
7561 view.selected_display_ranges(cx),
7562 &[
7563 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7564 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7565 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
7566 ]
7567 );
7568 });
7569 }
7570
7571 #[gpui::test]
7572 fn test_select_all(cx: &mut gpui::MutableAppContext) {
7573 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
7574 let settings = Settings::test(&cx);
7575 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7576 view.update(cx, |view, cx| {
7577 view.select_all(&SelectAll, cx);
7578 assert_eq!(
7579 view.selected_display_ranges(cx),
7580 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
7581 );
7582 });
7583 }
7584
7585 #[gpui::test]
7586 fn test_select_line(cx: &mut gpui::MutableAppContext) {
7587 let settings = Settings::test(&cx);
7588 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
7589 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7590 view.update(cx, |view, cx| {
7591 view.select_display_ranges(
7592 &[
7593 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7594 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7595 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7596 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
7597 ],
7598 cx,
7599 );
7600 view.select_line(&SelectLine, cx);
7601 assert_eq!(
7602 view.selected_display_ranges(cx),
7603 vec![
7604 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
7605 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
7606 ]
7607 );
7608 });
7609
7610 view.update(cx, |view, cx| {
7611 view.select_line(&SelectLine, cx);
7612 assert_eq!(
7613 view.selected_display_ranges(cx),
7614 vec![
7615 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
7616 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
7617 ]
7618 );
7619 });
7620
7621 view.update(cx, |view, cx| {
7622 view.select_line(&SelectLine, cx);
7623 assert_eq!(
7624 view.selected_display_ranges(cx),
7625 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
7626 );
7627 });
7628 }
7629
7630 #[gpui::test]
7631 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
7632 let settings = Settings::test(&cx);
7633 let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
7634 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7635 view.update(cx, |view, cx| {
7636 view.fold_ranges(
7637 vec![
7638 Point::new(0, 2)..Point::new(1, 2),
7639 Point::new(2, 3)..Point::new(4, 1),
7640 Point::new(7, 0)..Point::new(8, 4),
7641 ],
7642 cx,
7643 );
7644 view.select_display_ranges(
7645 &[
7646 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7647 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7648 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7649 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
7650 ],
7651 cx,
7652 );
7653 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
7654 });
7655
7656 view.update(cx, |view, cx| {
7657 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
7658 assert_eq!(
7659 view.display_text(cx),
7660 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
7661 );
7662 assert_eq!(
7663 view.selected_display_ranges(cx),
7664 [
7665 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7666 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7667 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
7668 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
7669 ]
7670 );
7671 });
7672
7673 view.update(cx, |view, cx| {
7674 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx);
7675 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
7676 assert_eq!(
7677 view.display_text(cx),
7678 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
7679 );
7680 assert_eq!(
7681 view.selected_display_ranges(cx),
7682 [
7683 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
7684 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
7685 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7686 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
7687 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
7688 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
7689 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
7690 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
7691 ]
7692 );
7693 });
7694 }
7695
7696 #[gpui::test]
7697 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
7698 let settings = Settings::test(&cx);
7699 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
7700 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7701
7702 view.update(cx, |view, cx| {
7703 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx);
7704 });
7705 view.update(cx, |view, cx| {
7706 view.add_selection_above(&AddSelectionAbove, cx);
7707 assert_eq!(
7708 view.selected_display_ranges(cx),
7709 vec![
7710 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7711 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
7712 ]
7713 );
7714 });
7715
7716 view.update(cx, |view, cx| {
7717 view.add_selection_above(&AddSelectionAbove, cx);
7718 assert_eq!(
7719 view.selected_display_ranges(cx),
7720 vec![
7721 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7722 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
7723 ]
7724 );
7725 });
7726
7727 view.update(cx, |view, cx| {
7728 view.add_selection_below(&AddSelectionBelow, cx);
7729 assert_eq!(
7730 view.selected_display_ranges(cx),
7731 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
7732 );
7733 });
7734
7735 view.update(cx, |view, cx| {
7736 view.add_selection_below(&AddSelectionBelow, cx);
7737 assert_eq!(
7738 view.selected_display_ranges(cx),
7739 vec![
7740 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7741 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
7742 ]
7743 );
7744 });
7745
7746 view.update(cx, |view, cx| {
7747 view.add_selection_below(&AddSelectionBelow, cx);
7748 assert_eq!(
7749 view.selected_display_ranges(cx),
7750 vec![
7751 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7752 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
7753 ]
7754 );
7755 });
7756
7757 view.update(cx, |view, cx| {
7758 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx);
7759 });
7760 view.update(cx, |view, cx| {
7761 view.add_selection_below(&AddSelectionBelow, cx);
7762 assert_eq!(
7763 view.selected_display_ranges(cx),
7764 vec![
7765 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7766 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
7767 ]
7768 );
7769 });
7770
7771 view.update(cx, |view, cx| {
7772 view.add_selection_below(&AddSelectionBelow, cx);
7773 assert_eq!(
7774 view.selected_display_ranges(cx),
7775 vec![
7776 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7777 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
7778 ]
7779 );
7780 });
7781
7782 view.update(cx, |view, cx| {
7783 view.add_selection_above(&AddSelectionAbove, cx);
7784 assert_eq!(
7785 view.selected_display_ranges(cx),
7786 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
7787 );
7788 });
7789
7790 view.update(cx, |view, cx| {
7791 view.add_selection_above(&AddSelectionAbove, cx);
7792 assert_eq!(
7793 view.selected_display_ranges(cx),
7794 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
7795 );
7796 });
7797
7798 view.update(cx, |view, cx| {
7799 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx);
7800 view.add_selection_below(&AddSelectionBelow, cx);
7801 assert_eq!(
7802 view.selected_display_ranges(cx),
7803 vec![
7804 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7805 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7806 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7807 ]
7808 );
7809 });
7810
7811 view.update(cx, |view, cx| {
7812 view.add_selection_below(&AddSelectionBelow, cx);
7813 assert_eq!(
7814 view.selected_display_ranges(cx),
7815 vec![
7816 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7817 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7818 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7819 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
7820 ]
7821 );
7822 });
7823
7824 view.update(cx, |view, cx| {
7825 view.add_selection_above(&AddSelectionAbove, cx);
7826 assert_eq!(
7827 view.selected_display_ranges(cx),
7828 vec![
7829 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7830 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7831 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7832 ]
7833 );
7834 });
7835
7836 view.update(cx, |view, cx| {
7837 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx);
7838 });
7839 view.update(cx, |view, cx| {
7840 view.add_selection_above(&AddSelectionAbove, cx);
7841 assert_eq!(
7842 view.selected_display_ranges(cx),
7843 vec![
7844 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
7845 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
7846 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
7847 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
7848 ]
7849 );
7850 });
7851
7852 view.update(cx, |view, cx| {
7853 view.add_selection_below(&AddSelectionBelow, cx);
7854 assert_eq!(
7855 view.selected_display_ranges(cx),
7856 vec![
7857 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
7858 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
7859 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
7860 ]
7861 );
7862 });
7863 }
7864
7865 #[gpui::test]
7866 async fn test_select_larger_smaller_syntax_node(cx: &mut gpui::TestAppContext) {
7867 let settings = cx.read(Settings::test);
7868 let language = Arc::new(Language::new(
7869 LanguageConfig::default(),
7870 Some(tree_sitter_rust::language()),
7871 ));
7872
7873 let text = r#"
7874 use mod1::mod2::{mod3, mod4};
7875
7876 fn fn_1(param1: bool, param2: &str) {
7877 let var1 = "text";
7878 }
7879 "#
7880 .unindent();
7881
7882 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7883 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7884 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7885 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
7886 .await;
7887
7888 view.update(cx, |view, cx| {
7889 view.select_display_ranges(
7890 &[
7891 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7892 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7893 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7894 ],
7895 cx,
7896 );
7897 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7898 });
7899 assert_eq!(
7900 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7901 &[
7902 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
7903 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7904 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
7905 ]
7906 );
7907
7908 view.update(cx, |view, cx| {
7909 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7910 });
7911 assert_eq!(
7912 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7913 &[
7914 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
7915 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
7916 ]
7917 );
7918
7919 view.update(cx, |view, cx| {
7920 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7921 });
7922 assert_eq!(
7923 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7924 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
7925 );
7926
7927 // Trying to expand the selected syntax node one more time has no effect.
7928 view.update(cx, |view, cx| {
7929 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7930 });
7931 assert_eq!(
7932 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7933 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
7934 );
7935
7936 view.update(cx, |view, cx| {
7937 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7938 });
7939 assert_eq!(
7940 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7941 &[
7942 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
7943 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
7944 ]
7945 );
7946
7947 view.update(cx, |view, cx| {
7948 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7949 });
7950 assert_eq!(
7951 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7952 &[
7953 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
7954 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7955 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
7956 ]
7957 );
7958
7959 view.update(cx, |view, cx| {
7960 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7961 });
7962 assert_eq!(
7963 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7964 &[
7965 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7966 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7967 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7968 ]
7969 );
7970
7971 // Trying to shrink the selected syntax node one more time has no effect.
7972 view.update(cx, |view, cx| {
7973 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7974 });
7975 assert_eq!(
7976 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7977 &[
7978 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7979 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7980 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7981 ]
7982 );
7983
7984 // Ensure that we keep expanding the selection if the larger selection starts or ends within
7985 // a fold.
7986 view.update(cx, |view, cx| {
7987 view.fold_ranges(
7988 vec![
7989 Point::new(0, 21)..Point::new(0, 24),
7990 Point::new(3, 20)..Point::new(3, 22),
7991 ],
7992 cx,
7993 );
7994 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7995 });
7996 assert_eq!(
7997 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7998 &[
7999 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
8000 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
8001 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
8002 ]
8003 );
8004 }
8005
8006 #[gpui::test]
8007 async fn test_autoindent_selections(cx: &mut gpui::TestAppContext) {
8008 let settings = cx.read(Settings::test);
8009 let language = Arc::new(
8010 Language::new(
8011 LanguageConfig {
8012 brackets: vec![
8013 BracketPair {
8014 start: "{".to_string(),
8015 end: "}".to_string(),
8016 close: false,
8017 newline: true,
8018 },
8019 BracketPair {
8020 start: "(".to_string(),
8021 end: ")".to_string(),
8022 close: false,
8023 newline: true,
8024 },
8025 ],
8026 ..Default::default()
8027 },
8028 Some(tree_sitter_rust::language()),
8029 )
8030 .with_indents_query(
8031 r#"
8032 (_ "(" ")" @end) @indent
8033 (_ "{" "}" @end) @indent
8034 "#,
8035 )
8036 .unwrap(),
8037 );
8038
8039 let text = "fn a() {}";
8040
8041 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8042 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8043 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8044 editor
8045 .condition(&cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
8046 .await;
8047
8048 editor.update(cx, |editor, cx| {
8049 editor.select_ranges([5..5, 8..8, 9..9], None, cx);
8050 editor.newline(&Newline, cx);
8051 assert_eq!(editor.text(cx), "fn a(\n \n) {\n \n}\n");
8052 assert_eq!(
8053 editor.selected_ranges(cx),
8054 &[
8055 Point::new(1, 4)..Point::new(1, 4),
8056 Point::new(3, 4)..Point::new(3, 4),
8057 Point::new(5, 0)..Point::new(5, 0)
8058 ]
8059 );
8060 });
8061 }
8062
8063 #[gpui::test]
8064 async fn test_autoclose_pairs(cx: &mut gpui::TestAppContext) {
8065 let settings = cx.read(Settings::test);
8066 let language = Arc::new(Language::new(
8067 LanguageConfig {
8068 brackets: vec![
8069 BracketPair {
8070 start: "{".to_string(),
8071 end: "}".to_string(),
8072 close: true,
8073 newline: true,
8074 },
8075 BracketPair {
8076 start: "/*".to_string(),
8077 end: " */".to_string(),
8078 close: true,
8079 newline: true,
8080 },
8081 ],
8082 ..Default::default()
8083 },
8084 Some(tree_sitter_rust::language()),
8085 ));
8086
8087 let text = r#"
8088 a
8089
8090 /
8091
8092 "#
8093 .unindent();
8094
8095 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8096 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8097 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8098 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
8099 .await;
8100
8101 view.update(cx, |view, cx| {
8102 view.select_display_ranges(
8103 &[
8104 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
8105 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
8106 ],
8107 cx,
8108 );
8109 view.handle_input(&Input("{".to_string()), cx);
8110 view.handle_input(&Input("{".to_string()), cx);
8111 view.handle_input(&Input("{".to_string()), cx);
8112 assert_eq!(
8113 view.text(cx),
8114 "
8115 {{{}}}
8116 {{{}}}
8117 /
8118
8119 "
8120 .unindent()
8121 );
8122
8123 view.move_right(&MoveRight, cx);
8124 view.handle_input(&Input("}".to_string()), cx);
8125 view.handle_input(&Input("}".to_string()), cx);
8126 view.handle_input(&Input("}".to_string()), cx);
8127 assert_eq!(
8128 view.text(cx),
8129 "
8130 {{{}}}}
8131 {{{}}}}
8132 /
8133
8134 "
8135 .unindent()
8136 );
8137
8138 view.undo(&Undo, cx);
8139 view.handle_input(&Input("/".to_string()), cx);
8140 view.handle_input(&Input("*".to_string()), cx);
8141 assert_eq!(
8142 view.text(cx),
8143 "
8144 /* */
8145 /* */
8146 /
8147
8148 "
8149 .unindent()
8150 );
8151
8152 view.undo(&Undo, cx);
8153 view.select_display_ranges(
8154 &[
8155 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
8156 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
8157 ],
8158 cx,
8159 );
8160 view.handle_input(&Input("*".to_string()), cx);
8161 assert_eq!(
8162 view.text(cx),
8163 "
8164 a
8165
8166 /*
8167 *
8168 "
8169 .unindent()
8170 );
8171
8172 view.finalize_last_transaction(cx);
8173 view.select_display_ranges(&[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)], cx);
8174 view.handle_input(&Input("{".to_string()), cx);
8175 assert_eq!(
8176 view.text(cx),
8177 "
8178 {a
8179
8180 /*
8181 *
8182 "
8183 .unindent()
8184 );
8185
8186 view.undo(&Undo, cx);
8187 view.select_display_ranges(&[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1)], cx);
8188 view.handle_input(&Input("{".to_string()), cx);
8189 assert_eq!(
8190 view.text(cx),
8191 "
8192 {a}
8193
8194 /*
8195 *
8196 "
8197 .unindent()
8198 );
8199 assert_eq!(
8200 view.selected_display_ranges(cx),
8201 [DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)]
8202 );
8203 });
8204 }
8205
8206 #[gpui::test]
8207 async fn test_snippets(cx: &mut gpui::TestAppContext) {
8208 let settings = cx.read(Settings::test);
8209
8210 let text = "
8211 a. b
8212 a. b
8213 a. b
8214 "
8215 .unindent();
8216 let buffer = cx.update(|cx| MultiBuffer::build_simple(&text, cx));
8217 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8218
8219 editor.update(cx, |editor, cx| {
8220 let buffer = &editor.snapshot(cx).buffer_snapshot;
8221 let snippet = Snippet::parse("f(${1:one}, ${2:two}, ${1:three})$0").unwrap();
8222 let insertion_ranges = [
8223 Point::new(0, 2).to_offset(buffer)..Point::new(0, 2).to_offset(buffer),
8224 Point::new(1, 2).to_offset(buffer)..Point::new(1, 2).to_offset(buffer),
8225 Point::new(2, 2).to_offset(buffer)..Point::new(2, 2).to_offset(buffer),
8226 ];
8227
8228 editor
8229 .insert_snippet(&insertion_ranges, snippet, cx)
8230 .unwrap();
8231 assert_eq!(
8232 editor.text(cx),
8233 "
8234 a.f(one, two, three) b
8235 a.f(one, two, three) b
8236 a.f(one, two, three) b
8237 "
8238 .unindent()
8239 );
8240 assert_eq!(
8241 editor.selected_ranges::<Point>(cx),
8242 &[
8243 Point::new(0, 4)..Point::new(0, 7),
8244 Point::new(0, 14)..Point::new(0, 19),
8245 Point::new(1, 4)..Point::new(1, 7),
8246 Point::new(1, 14)..Point::new(1, 19),
8247 Point::new(2, 4)..Point::new(2, 7),
8248 Point::new(2, 14)..Point::new(2, 19),
8249 ]
8250 );
8251
8252 // Can't move earlier than the first tab stop
8253 editor.move_to_prev_snippet_tabstop(cx);
8254 assert_eq!(
8255 editor.selected_ranges::<Point>(cx),
8256 &[
8257 Point::new(0, 4)..Point::new(0, 7),
8258 Point::new(0, 14)..Point::new(0, 19),
8259 Point::new(1, 4)..Point::new(1, 7),
8260 Point::new(1, 14)..Point::new(1, 19),
8261 Point::new(2, 4)..Point::new(2, 7),
8262 Point::new(2, 14)..Point::new(2, 19),
8263 ]
8264 );
8265
8266 assert!(editor.move_to_next_snippet_tabstop(cx));
8267 assert_eq!(
8268 editor.selected_ranges::<Point>(cx),
8269 &[
8270 Point::new(0, 9)..Point::new(0, 12),
8271 Point::new(1, 9)..Point::new(1, 12),
8272 Point::new(2, 9)..Point::new(2, 12)
8273 ]
8274 );
8275
8276 editor.move_to_prev_snippet_tabstop(cx);
8277 assert_eq!(
8278 editor.selected_ranges::<Point>(cx),
8279 &[
8280 Point::new(0, 4)..Point::new(0, 7),
8281 Point::new(0, 14)..Point::new(0, 19),
8282 Point::new(1, 4)..Point::new(1, 7),
8283 Point::new(1, 14)..Point::new(1, 19),
8284 Point::new(2, 4)..Point::new(2, 7),
8285 Point::new(2, 14)..Point::new(2, 19),
8286 ]
8287 );
8288
8289 assert!(editor.move_to_next_snippet_tabstop(cx));
8290 assert!(editor.move_to_next_snippet_tabstop(cx));
8291 assert_eq!(
8292 editor.selected_ranges::<Point>(cx),
8293 &[
8294 Point::new(0, 20)..Point::new(0, 20),
8295 Point::new(1, 20)..Point::new(1, 20),
8296 Point::new(2, 20)..Point::new(2, 20)
8297 ]
8298 );
8299
8300 // As soon as the last tab stop is reached, snippet state is gone
8301 editor.move_to_prev_snippet_tabstop(cx);
8302 assert_eq!(
8303 editor.selected_ranges::<Point>(cx),
8304 &[
8305 Point::new(0, 20)..Point::new(0, 20),
8306 Point::new(1, 20)..Point::new(1, 20),
8307 Point::new(2, 20)..Point::new(2, 20)
8308 ]
8309 );
8310 });
8311 }
8312
8313 #[gpui::test]
8314 async fn test_completion(cx: &mut gpui::TestAppContext) {
8315 let settings = cx.read(Settings::test);
8316
8317 let (mut language_server_config, mut fake_servers) = LanguageServerConfig::fake();
8318 language_server_config.set_fake_capabilities(lsp::ServerCapabilities {
8319 completion_provider: Some(lsp::CompletionOptions {
8320 trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
8321 ..Default::default()
8322 }),
8323 ..Default::default()
8324 });
8325 let language = Arc::new(Language::new(
8326 LanguageConfig {
8327 name: "Rust".into(),
8328 path_suffixes: vec!["rs".to_string()],
8329 language_server: Some(language_server_config),
8330 ..Default::default()
8331 },
8332 Some(tree_sitter_rust::language()),
8333 ));
8334
8335 let text = "
8336 one
8337 two
8338 three
8339 "
8340 .unindent();
8341
8342 let fs = FakeFs::new(cx.background().clone());
8343 fs.insert_file("/file.rs", text).await;
8344
8345 let project = Project::test(fs, cx);
8346 project.update(cx, |project, _| project.languages().add(language));
8347
8348 let worktree_id = project
8349 .update(cx, |project, cx| {
8350 project.find_or_create_local_worktree("/file.rs", true, cx)
8351 })
8352 .await
8353 .unwrap()
8354 .0
8355 .read_with(cx, |tree, _| tree.id());
8356 let buffer = project
8357 .update(cx, |project, cx| project.open_buffer((worktree_id, ""), cx))
8358 .await
8359 .unwrap();
8360 let mut fake_server = fake_servers.next().await.unwrap();
8361
8362 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8363 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8364
8365 editor.update(cx, |editor, cx| {
8366 editor.project = Some(project);
8367 editor.select_ranges([Point::new(0, 3)..Point::new(0, 3)], None, cx);
8368 editor.handle_input(&Input(".".to_string()), cx);
8369 });
8370
8371 handle_completion_request(
8372 &mut fake_server,
8373 "/file.rs",
8374 Point::new(0, 4),
8375 vec![
8376 (Point::new(0, 4)..Point::new(0, 4), "first_completion"),
8377 (Point::new(0, 4)..Point::new(0, 4), "second_completion"),
8378 ],
8379 )
8380 .await;
8381 editor
8382 .condition(&cx, |editor, _| editor.context_menu_visible())
8383 .await;
8384
8385 let apply_additional_edits = editor.update(cx, |editor, cx| {
8386 editor.move_down(&MoveDown, cx);
8387 let apply_additional_edits = editor
8388 .confirm_completion(&ConfirmCompletion(None), cx)
8389 .unwrap();
8390 assert_eq!(
8391 editor.text(cx),
8392 "
8393 one.second_completion
8394 two
8395 three
8396 "
8397 .unindent()
8398 );
8399 apply_additional_edits
8400 });
8401
8402 handle_resolve_completion_request(
8403 &mut fake_server,
8404 Some((Point::new(2, 5)..Point::new(2, 5), "\nadditional edit")),
8405 )
8406 .await;
8407 apply_additional_edits.await.unwrap();
8408 assert_eq!(
8409 editor.read_with(cx, |editor, cx| editor.text(cx)),
8410 "
8411 one.second_completion
8412 two
8413 three
8414 additional edit
8415 "
8416 .unindent()
8417 );
8418
8419 editor.update(cx, |editor, cx| {
8420 editor.select_ranges(
8421 [
8422 Point::new(1, 3)..Point::new(1, 3),
8423 Point::new(2, 5)..Point::new(2, 5),
8424 ],
8425 None,
8426 cx,
8427 );
8428
8429 editor.handle_input(&Input(" ".to_string()), cx);
8430 assert!(editor.context_menu.is_none());
8431 editor.handle_input(&Input("s".to_string()), cx);
8432 assert!(editor.context_menu.is_none());
8433 });
8434
8435 handle_completion_request(
8436 &mut fake_server,
8437 "/file.rs",
8438 Point::new(2, 7),
8439 vec![
8440 (Point::new(2, 6)..Point::new(2, 7), "fourth_completion"),
8441 (Point::new(2, 6)..Point::new(2, 7), "fifth_completion"),
8442 (Point::new(2, 6)..Point::new(2, 7), "sixth_completion"),
8443 ],
8444 )
8445 .await;
8446 editor
8447 .condition(&cx, |editor, _| editor.context_menu_visible())
8448 .await;
8449
8450 editor.update(cx, |editor, cx| {
8451 editor.handle_input(&Input("i".to_string()), cx);
8452 });
8453
8454 handle_completion_request(
8455 &mut fake_server,
8456 "/file.rs",
8457 Point::new(2, 8),
8458 vec![
8459 (Point::new(2, 6)..Point::new(2, 8), "fourth_completion"),
8460 (Point::new(2, 6)..Point::new(2, 8), "fifth_completion"),
8461 (Point::new(2, 6)..Point::new(2, 8), "sixth_completion"),
8462 ],
8463 )
8464 .await;
8465 editor
8466 .condition(&cx, |editor, _| editor.context_menu_visible())
8467 .await;
8468
8469 let apply_additional_edits = editor.update(cx, |editor, cx| {
8470 let apply_additional_edits = editor
8471 .confirm_completion(&ConfirmCompletion(None), cx)
8472 .unwrap();
8473 assert_eq!(
8474 editor.text(cx),
8475 "
8476 one.second_completion
8477 two sixth_completion
8478 three sixth_completion
8479 additional edit
8480 "
8481 .unindent()
8482 );
8483 apply_additional_edits
8484 });
8485 handle_resolve_completion_request(&mut fake_server, None).await;
8486 apply_additional_edits.await.unwrap();
8487
8488 async fn handle_completion_request(
8489 fake: &mut FakeLanguageServer,
8490 path: &'static str,
8491 position: Point,
8492 completions: Vec<(Range<Point>, &'static str)>,
8493 ) {
8494 fake.handle_request::<lsp::request::Completion, _>(move |params, _| {
8495 assert_eq!(
8496 params.text_document_position.text_document.uri,
8497 lsp::Url::from_file_path(path).unwrap()
8498 );
8499 assert_eq!(
8500 params.text_document_position.position,
8501 lsp::Position::new(position.row, position.column)
8502 );
8503 Some(lsp::CompletionResponse::Array(
8504 completions
8505 .iter()
8506 .map(|(range, new_text)| lsp::CompletionItem {
8507 label: new_text.to_string(),
8508 text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
8509 range: lsp::Range::new(
8510 lsp::Position::new(range.start.row, range.start.column),
8511 lsp::Position::new(range.start.row, range.start.column),
8512 ),
8513 new_text: new_text.to_string(),
8514 })),
8515 ..Default::default()
8516 })
8517 .collect(),
8518 ))
8519 })
8520 .next()
8521 .await;
8522 }
8523
8524 async fn handle_resolve_completion_request(
8525 fake: &mut FakeLanguageServer,
8526 edit: Option<(Range<Point>, &'static str)>,
8527 ) {
8528 fake.handle_request::<lsp::request::ResolveCompletionItem, _>(move |_, _| {
8529 lsp::CompletionItem {
8530 additional_text_edits: edit.clone().map(|(range, new_text)| {
8531 vec![lsp::TextEdit::new(
8532 lsp::Range::new(
8533 lsp::Position::new(range.start.row, range.start.column),
8534 lsp::Position::new(range.end.row, range.end.column),
8535 ),
8536 new_text.to_string(),
8537 )]
8538 }),
8539 ..Default::default()
8540 }
8541 })
8542 .next()
8543 .await;
8544 }
8545 }
8546
8547 #[gpui::test]
8548 async fn test_toggle_comment(cx: &mut gpui::TestAppContext) {
8549 let settings = cx.read(Settings::test);
8550 let language = Arc::new(Language::new(
8551 LanguageConfig {
8552 line_comment: Some("// ".to_string()),
8553 ..Default::default()
8554 },
8555 Some(tree_sitter_rust::language()),
8556 ));
8557
8558 let text = "
8559 fn a() {
8560 //b();
8561 // c();
8562 // d();
8563 }
8564 "
8565 .unindent();
8566
8567 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8568 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8569 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8570
8571 view.update(cx, |editor, cx| {
8572 // If multiple selections intersect a line, the line is only
8573 // toggled once.
8574 editor.select_display_ranges(
8575 &[
8576 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
8577 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
8578 ],
8579 cx,
8580 );
8581 editor.toggle_comments(&ToggleComments, cx);
8582 assert_eq!(
8583 editor.text(cx),
8584 "
8585 fn a() {
8586 b();
8587 c();
8588 d();
8589 }
8590 "
8591 .unindent()
8592 );
8593
8594 // The comment prefix is inserted at the same column for every line
8595 // in a selection.
8596 editor.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx);
8597 editor.toggle_comments(&ToggleComments, cx);
8598 assert_eq!(
8599 editor.text(cx),
8600 "
8601 fn a() {
8602 // b();
8603 // c();
8604 // d();
8605 }
8606 "
8607 .unindent()
8608 );
8609
8610 // If a selection ends at the beginning of a line, that line is not toggled.
8611 editor.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx);
8612 editor.toggle_comments(&ToggleComments, cx);
8613 assert_eq!(
8614 editor.text(cx),
8615 "
8616 fn a() {
8617 // b();
8618 c();
8619 // d();
8620 }
8621 "
8622 .unindent()
8623 );
8624 });
8625 }
8626
8627 #[gpui::test]
8628 fn test_editing_disjoint_excerpts(cx: &mut gpui::MutableAppContext) {
8629 let settings = Settings::test(cx);
8630 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8631 let multibuffer = cx.add_model(|cx| {
8632 let mut multibuffer = MultiBuffer::new(0);
8633 multibuffer.push_excerpts(
8634 buffer.clone(),
8635 [
8636 Point::new(0, 0)..Point::new(0, 4),
8637 Point::new(1, 0)..Point::new(1, 4),
8638 ],
8639 cx,
8640 );
8641 multibuffer
8642 });
8643
8644 assert_eq!(multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb");
8645
8646 let (_, view) = cx.add_window(Default::default(), |cx| {
8647 build_editor(multibuffer, settings, cx)
8648 });
8649 view.update(cx, |view, cx| {
8650 assert_eq!(view.text(cx), "aaaa\nbbbb");
8651 view.select_ranges(
8652 [
8653 Point::new(0, 0)..Point::new(0, 0),
8654 Point::new(1, 0)..Point::new(1, 0),
8655 ],
8656 None,
8657 cx,
8658 );
8659
8660 view.handle_input(&Input("X".to_string()), cx);
8661 assert_eq!(view.text(cx), "Xaaaa\nXbbbb");
8662 assert_eq!(
8663 view.selected_ranges(cx),
8664 [
8665 Point::new(0, 1)..Point::new(0, 1),
8666 Point::new(1, 1)..Point::new(1, 1),
8667 ]
8668 )
8669 });
8670 }
8671
8672 #[gpui::test]
8673 fn test_editing_overlapping_excerpts(cx: &mut gpui::MutableAppContext) {
8674 let settings = Settings::test(cx);
8675 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8676 let multibuffer = cx.add_model(|cx| {
8677 let mut multibuffer = MultiBuffer::new(0);
8678 multibuffer.push_excerpts(
8679 buffer,
8680 [
8681 Point::new(0, 0)..Point::new(1, 4),
8682 Point::new(1, 0)..Point::new(2, 4),
8683 ],
8684 cx,
8685 );
8686 multibuffer
8687 });
8688
8689 assert_eq!(
8690 multibuffer.read(cx).read(cx).text(),
8691 "aaaa\nbbbb\nbbbb\ncccc"
8692 );
8693
8694 let (_, view) = cx.add_window(Default::default(), |cx| {
8695 build_editor(multibuffer, settings, cx)
8696 });
8697 view.update(cx, |view, cx| {
8698 view.select_ranges(
8699 [
8700 Point::new(1, 1)..Point::new(1, 1),
8701 Point::new(2, 3)..Point::new(2, 3),
8702 ],
8703 None,
8704 cx,
8705 );
8706
8707 view.handle_input(&Input("X".to_string()), cx);
8708 assert_eq!(view.text(cx), "aaaa\nbXbbXb\nbXbbXb\ncccc");
8709 assert_eq!(
8710 view.selected_ranges(cx),
8711 [
8712 Point::new(1, 2)..Point::new(1, 2),
8713 Point::new(2, 5)..Point::new(2, 5),
8714 ]
8715 );
8716
8717 view.newline(&Newline, cx);
8718 assert_eq!(view.text(cx), "aaaa\nbX\nbbX\nb\nbX\nbbX\nb\ncccc");
8719 assert_eq!(
8720 view.selected_ranges(cx),
8721 [
8722 Point::new(2, 0)..Point::new(2, 0),
8723 Point::new(6, 0)..Point::new(6, 0),
8724 ]
8725 );
8726 });
8727 }
8728
8729 #[gpui::test]
8730 fn test_refresh_selections(cx: &mut gpui::MutableAppContext) {
8731 let settings = Settings::test(cx);
8732 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8733 let mut excerpt1_id = None;
8734 let multibuffer = cx.add_model(|cx| {
8735 let mut multibuffer = MultiBuffer::new(0);
8736 excerpt1_id = multibuffer
8737 .push_excerpts(
8738 buffer.clone(),
8739 [
8740 Point::new(0, 0)..Point::new(1, 4),
8741 Point::new(1, 0)..Point::new(2, 4),
8742 ],
8743 cx,
8744 )
8745 .into_iter()
8746 .next();
8747 multibuffer
8748 });
8749 assert_eq!(
8750 multibuffer.read(cx).read(cx).text(),
8751 "aaaa\nbbbb\nbbbb\ncccc"
8752 );
8753 let (_, editor) = cx.add_window(Default::default(), |cx| {
8754 let mut editor = build_editor(multibuffer.clone(), settings, cx);
8755 editor.select_ranges(
8756 [
8757 Point::new(1, 3)..Point::new(1, 3),
8758 Point::new(2, 1)..Point::new(2, 1),
8759 ],
8760 None,
8761 cx,
8762 );
8763 editor
8764 });
8765
8766 // Refreshing selections is a no-op when excerpts haven't changed.
8767 editor.update(cx, |editor, cx| {
8768 editor.refresh_selections(cx);
8769 assert_eq!(
8770 editor.selected_ranges(cx),
8771 [
8772 Point::new(1, 3)..Point::new(1, 3),
8773 Point::new(2, 1)..Point::new(2, 1),
8774 ]
8775 );
8776 });
8777
8778 multibuffer.update(cx, |multibuffer, cx| {
8779 multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx);
8780 });
8781 editor.update(cx, |editor, cx| {
8782 // Removing an excerpt causes the first selection to become degenerate.
8783 assert_eq!(
8784 editor.selected_ranges(cx),
8785 [
8786 Point::new(0, 0)..Point::new(0, 0),
8787 Point::new(0, 1)..Point::new(0, 1)
8788 ]
8789 );
8790
8791 // Refreshing selections will relocate the first selection to the original buffer
8792 // location.
8793 editor.refresh_selections(cx);
8794 assert_eq!(
8795 editor.selected_ranges(cx),
8796 [
8797 Point::new(0, 1)..Point::new(0, 1),
8798 Point::new(0, 3)..Point::new(0, 3)
8799 ]
8800 );
8801 });
8802 }
8803
8804 #[gpui::test]
8805 async fn test_extra_newline_insertion(cx: &mut gpui::TestAppContext) {
8806 let settings = cx.read(Settings::test);
8807 let language = Arc::new(Language::new(
8808 LanguageConfig {
8809 brackets: vec![
8810 BracketPair {
8811 start: "{".to_string(),
8812 end: "}".to_string(),
8813 close: true,
8814 newline: true,
8815 },
8816 BracketPair {
8817 start: "/* ".to_string(),
8818 end: " */".to_string(),
8819 close: true,
8820 newline: true,
8821 },
8822 ],
8823 ..Default::default()
8824 },
8825 Some(tree_sitter_rust::language()),
8826 ));
8827
8828 let text = concat!(
8829 "{ }\n", // Suppress rustfmt
8830 " x\n", //
8831 " /* */\n", //
8832 "x\n", //
8833 "{{} }\n", //
8834 );
8835
8836 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8837 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8838 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8839 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
8840 .await;
8841
8842 view.update(cx, |view, cx| {
8843 view.select_display_ranges(
8844 &[
8845 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
8846 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
8847 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
8848 ],
8849 cx,
8850 );
8851 view.newline(&Newline, cx);
8852
8853 assert_eq!(
8854 view.buffer().read(cx).read(cx).text(),
8855 concat!(
8856 "{ \n", // Suppress rustfmt
8857 "\n", //
8858 "}\n", //
8859 " x\n", //
8860 " /* \n", //
8861 " \n", //
8862 " */\n", //
8863 "x\n", //
8864 "{{} \n", //
8865 "}\n", //
8866 )
8867 );
8868 });
8869 }
8870
8871 #[gpui::test]
8872 fn test_highlighted_ranges(cx: &mut gpui::MutableAppContext) {
8873 let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
8874 let settings = Settings::test(&cx);
8875 let (_, editor) = cx.add_window(Default::default(), |cx| {
8876 build_editor(buffer.clone(), settings, cx)
8877 });
8878
8879 editor.update(cx, |editor, cx| {
8880 struct Type1;
8881 struct Type2;
8882
8883 let buffer = buffer.read(cx).snapshot(cx);
8884
8885 let anchor_range = |range: Range<Point>| {
8886 buffer.anchor_after(range.start)..buffer.anchor_after(range.end)
8887 };
8888
8889 editor.highlight_background::<Type1>(
8890 vec![
8891 anchor_range(Point::new(2, 1)..Point::new(2, 3)),
8892 anchor_range(Point::new(4, 2)..Point::new(4, 4)),
8893 anchor_range(Point::new(6, 3)..Point::new(6, 5)),
8894 anchor_range(Point::new(8, 4)..Point::new(8, 6)),
8895 ],
8896 Color::red(),
8897 cx,
8898 );
8899 editor.highlight_background::<Type2>(
8900 vec![
8901 anchor_range(Point::new(3, 2)..Point::new(3, 5)),
8902 anchor_range(Point::new(5, 3)..Point::new(5, 6)),
8903 anchor_range(Point::new(7, 4)..Point::new(7, 7)),
8904 anchor_range(Point::new(9, 5)..Point::new(9, 8)),
8905 ],
8906 Color::green(),
8907 cx,
8908 );
8909
8910 let snapshot = editor.snapshot(cx);
8911 let mut highlighted_ranges = editor.background_highlights_in_range(
8912 anchor_range(Point::new(3, 4)..Point::new(7, 4)),
8913 &snapshot,
8914 );
8915 // Enforce a consistent ordering based on color without relying on the ordering of the
8916 // highlight's `TypeId` which is non-deterministic.
8917 highlighted_ranges.sort_unstable_by_key(|(_, color)| *color);
8918 assert_eq!(
8919 highlighted_ranges,
8920 &[
8921 (
8922 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 5),
8923 Color::green(),
8924 ),
8925 (
8926 DisplayPoint::new(5, 3)..DisplayPoint::new(5, 6),
8927 Color::green(),
8928 ),
8929 (
8930 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 4),
8931 Color::red(),
8932 ),
8933 (
8934 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
8935 Color::red(),
8936 ),
8937 ]
8938 );
8939 assert_eq!(
8940 editor.background_highlights_in_range(
8941 anchor_range(Point::new(5, 6)..Point::new(6, 4)),
8942 &snapshot,
8943 ),
8944 &[(
8945 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
8946 Color::red(),
8947 )]
8948 );
8949 });
8950 }
8951
8952 #[test]
8953 fn test_combine_syntax_and_fuzzy_match_highlights() {
8954 let string = "abcdefghijklmnop";
8955 let default = HighlightStyle::default();
8956 let syntax_ranges = [
8957 (
8958 0..3,
8959 HighlightStyle {
8960 color: Color::red(),
8961 ..default
8962 },
8963 ),
8964 (
8965 4..8,
8966 HighlightStyle {
8967 color: Color::green(),
8968 ..default
8969 },
8970 ),
8971 ];
8972 let match_indices = [4, 6, 7, 8];
8973 assert_eq!(
8974 combine_syntax_and_fuzzy_match_highlights(
8975 &string,
8976 default,
8977 syntax_ranges.into_iter(),
8978 &match_indices,
8979 ),
8980 &[
8981 (
8982 0..3,
8983 HighlightStyle {
8984 color: Color::red(),
8985 ..default
8986 },
8987 ),
8988 (
8989 4..5,
8990 HighlightStyle {
8991 color: Color::green(),
8992 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
8993 ..default
8994 },
8995 ),
8996 (
8997 5..6,
8998 HighlightStyle {
8999 color: Color::green(),
9000 ..default
9001 },
9002 ),
9003 (
9004 6..8,
9005 HighlightStyle {
9006 color: Color::green(),
9007 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
9008 ..default
9009 },
9010 ),
9011 (
9012 8..9,
9013 HighlightStyle {
9014 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
9015 ..default
9016 },
9017 ),
9018 ]
9019 );
9020 }
9021
9022 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
9023 let point = DisplayPoint::new(row as u32, column as u32);
9024 point..point
9025 }
9026
9027 fn build_editor(
9028 buffer: ModelHandle<MultiBuffer>,
9029 settings: Settings,
9030 cx: &mut ViewContext<Editor>,
9031 ) -> Editor {
9032 let settings = watch::channel_with(settings);
9033 Editor::new(EditorMode::Full, buffer, None, settings.1, None, cx)
9034 }
9035}
9036
9037trait RangeExt<T> {
9038 fn sorted(&self) -> Range<T>;
9039 fn to_inclusive(&self) -> RangeInclusive<T>;
9040}
9041
9042impl<T: Ord + Clone> RangeExt<T> for Range<T> {
9043 fn sorted(&self) -> Self {
9044 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
9045 }
9046
9047 fn to_inclusive(&self) -> RangeInclusive<T> {
9048 self.start.clone()..=self.end.clone()
9049 }
9050}