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 highlighted_ranges: BTreeMap<TypeId, (Color, Vec<Range<Anchor>>)>,
444 nav_history: Option<ItemNavHistory>,
445 context_menu: Option<ContextMenu>,
446 completion_tasks: Vec<(CompletionId, Task<Option<()>>)>,
447 next_completion_id: CompletionId,
448 available_code_actions: Option<(ModelHandle<Buffer>, Arc<[CodeAction]>)>,
449 code_actions_task: Option<Task<()>>,
450 document_highlights_task: Option<Task<()>>,
451 pending_rename: Option<RenameState>,
452 searchable: bool,
453 cursor_shape: CursorShape,
454}
455
456pub struct EditorSnapshot {
457 pub mode: EditorMode,
458 pub display_snapshot: DisplaySnapshot,
459 pub placeholder_text: Option<Arc<str>>,
460 is_focused: bool,
461 scroll_position: Vector2F,
462 scroll_top_anchor: Option<Anchor>,
463}
464
465#[derive(Clone)]
466pub struct PendingSelection {
467 selection: Selection<Anchor>,
468 mode: SelectMode,
469}
470
471struct AddSelectionsState {
472 above: bool,
473 stack: Vec<usize>,
474}
475
476struct SelectNextState {
477 query: AhoCorasick,
478 wordwise: bool,
479 done: bool,
480}
481
482struct BracketPairState {
483 ranges: Vec<Range<Anchor>>,
484 pair: BracketPair,
485}
486
487struct SnippetState {
488 ranges: Vec<Vec<Range<Anchor>>>,
489 active_index: usize,
490}
491
492pub struct RenameState {
493 pub range: Range<Anchor>,
494 pub old_name: String,
495 pub editor: ViewHandle<Editor>,
496 block_id: BlockId,
497}
498
499struct InvalidationStack<T>(Vec<T>);
500
501enum ContextMenu {
502 Completions(CompletionsMenu),
503 CodeActions(CodeActionsMenu),
504}
505
506impl ContextMenu {
507 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) -> bool {
508 if self.visible() {
509 match self {
510 ContextMenu::Completions(menu) => menu.select_prev(cx),
511 ContextMenu::CodeActions(menu) => menu.select_prev(cx),
512 }
513 true
514 } else {
515 false
516 }
517 }
518
519 fn select_next(&mut self, cx: &mut ViewContext<Editor>) -> bool {
520 if self.visible() {
521 match self {
522 ContextMenu::Completions(menu) => menu.select_next(cx),
523 ContextMenu::CodeActions(menu) => menu.select_next(cx),
524 }
525 true
526 } else {
527 false
528 }
529 }
530
531 fn visible(&self) -> bool {
532 match self {
533 ContextMenu::Completions(menu) => menu.visible(),
534 ContextMenu::CodeActions(menu) => menu.visible(),
535 }
536 }
537
538 fn render(
539 &self,
540 cursor_position: DisplayPoint,
541 style: EditorStyle,
542 cx: &AppContext,
543 ) -> (DisplayPoint, ElementBox) {
544 match self {
545 ContextMenu::Completions(menu) => (cursor_position, menu.render(style, cx)),
546 ContextMenu::CodeActions(menu) => menu.render(cursor_position, style),
547 }
548 }
549}
550
551struct CompletionsMenu {
552 id: CompletionId,
553 initial_position: Anchor,
554 buffer: ModelHandle<Buffer>,
555 completions: Arc<[Completion]>,
556 match_candidates: Vec<StringMatchCandidate>,
557 matches: Arc<[StringMatch]>,
558 selected_item: usize,
559 list: UniformListState,
560}
561
562impl CompletionsMenu {
563 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) {
564 if self.selected_item > 0 {
565 self.selected_item -= 1;
566 self.list.scroll_to(ScrollTarget::Show(self.selected_item));
567 }
568 cx.notify();
569 }
570
571 fn select_next(&mut self, cx: &mut ViewContext<Editor>) {
572 if self.selected_item + 1 < self.matches.len() {
573 self.selected_item += 1;
574 self.list.scroll_to(ScrollTarget::Show(self.selected_item));
575 }
576 cx.notify();
577 }
578
579 fn visible(&self) -> bool {
580 !self.matches.is_empty()
581 }
582
583 fn render(&self, style: EditorStyle, _: &AppContext) -> ElementBox {
584 enum CompletionTag {}
585
586 let completions = self.completions.clone();
587 let matches = self.matches.clone();
588 let selected_item = self.selected_item;
589 let container_style = style.autocomplete.container;
590 UniformList::new(self.list.clone(), matches.len(), move |range, items, cx| {
591 let start_ix = range.start;
592 for (ix, mat) in matches[range].iter().enumerate() {
593 let completion = &completions[mat.candidate_id];
594 let item_ix = start_ix + ix;
595 items.push(
596 MouseEventHandler::new::<CompletionTag, _, _>(
597 mat.candidate_id,
598 cx,
599 |state, _| {
600 let item_style = if item_ix == selected_item {
601 style.autocomplete.selected_item
602 } else if state.hovered {
603 style.autocomplete.hovered_item
604 } else {
605 style.autocomplete.item
606 };
607
608 Text::new(completion.label.text.clone(), style.text.clone())
609 .with_soft_wrap(false)
610 .with_highlights(combine_syntax_and_fuzzy_match_highlights(
611 &completion.label.text,
612 style.text.color.into(),
613 styled_runs_for_code_label(
614 &completion.label,
615 style.text.color,
616 &style.syntax,
617 ),
618 &mat.positions,
619 ))
620 .contained()
621 .with_style(item_style)
622 .boxed()
623 },
624 )
625 .with_cursor_style(CursorStyle::PointingHand)
626 .on_mouse_down(move |cx| {
627 cx.dispatch_action(ConfirmCompletion(Some(item_ix)));
628 })
629 .boxed(),
630 );
631 }
632 })
633 .with_width_from_item(
634 self.matches
635 .iter()
636 .enumerate()
637 .max_by_key(|(_, mat)| {
638 self.completions[mat.candidate_id]
639 .label
640 .text
641 .chars()
642 .count()
643 })
644 .map(|(ix, _)| ix),
645 )
646 .contained()
647 .with_style(container_style)
648 .boxed()
649 }
650
651 pub async fn filter(&mut self, query: Option<&str>, executor: Arc<executor::Background>) {
652 let mut matches = if let Some(query) = query {
653 fuzzy::match_strings(
654 &self.match_candidates,
655 query,
656 false,
657 100,
658 &Default::default(),
659 executor,
660 )
661 .await
662 } else {
663 self.match_candidates
664 .iter()
665 .enumerate()
666 .map(|(candidate_id, candidate)| StringMatch {
667 candidate_id,
668 score: Default::default(),
669 positions: Default::default(),
670 string: candidate.string.clone(),
671 })
672 .collect()
673 };
674 matches.sort_unstable_by_key(|mat| {
675 (
676 Reverse(OrderedFloat(mat.score)),
677 self.completions[mat.candidate_id].sort_key(),
678 )
679 });
680
681 for mat in &mut matches {
682 let filter_start = self.completions[mat.candidate_id].label.filter_range.start;
683 for position in &mut mat.positions {
684 *position += filter_start;
685 }
686 }
687
688 self.matches = matches.into();
689 }
690}
691
692#[derive(Clone)]
693struct CodeActionsMenu {
694 actions: Arc<[CodeAction]>,
695 buffer: ModelHandle<Buffer>,
696 selected_item: usize,
697 list: UniformListState,
698 deployed_from_indicator: bool,
699}
700
701impl CodeActionsMenu {
702 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) {
703 if self.selected_item > 0 {
704 self.selected_item -= 1;
705 cx.notify()
706 }
707 }
708
709 fn select_next(&mut self, cx: &mut ViewContext<Editor>) {
710 if self.selected_item + 1 < self.actions.len() {
711 self.selected_item += 1;
712 cx.notify()
713 }
714 }
715
716 fn visible(&self) -> bool {
717 !self.actions.is_empty()
718 }
719
720 fn render(
721 &self,
722 mut cursor_position: DisplayPoint,
723 style: EditorStyle,
724 ) -> (DisplayPoint, ElementBox) {
725 enum ActionTag {}
726
727 let container_style = style.autocomplete.container;
728 let actions = self.actions.clone();
729 let selected_item = self.selected_item;
730 let element =
731 UniformList::new(self.list.clone(), actions.len(), move |range, items, cx| {
732 let start_ix = range.start;
733 for (ix, action) in actions[range].iter().enumerate() {
734 let item_ix = start_ix + ix;
735 items.push(
736 MouseEventHandler::new::<ActionTag, _, _>(item_ix, cx, |state, _| {
737 let item_style = if item_ix == selected_item {
738 style.autocomplete.selected_item
739 } else if state.hovered {
740 style.autocomplete.hovered_item
741 } else {
742 style.autocomplete.item
743 };
744
745 Text::new(action.lsp_action.title.clone(), style.text.clone())
746 .with_soft_wrap(false)
747 .contained()
748 .with_style(item_style)
749 .boxed()
750 })
751 .with_cursor_style(CursorStyle::PointingHand)
752 .on_mouse_down(move |cx| {
753 cx.dispatch_action(ConfirmCodeAction(Some(item_ix)));
754 })
755 .boxed(),
756 );
757 }
758 })
759 .with_width_from_item(
760 self.actions
761 .iter()
762 .enumerate()
763 .max_by_key(|(_, action)| action.lsp_action.title.chars().count())
764 .map(|(ix, _)| ix),
765 )
766 .contained()
767 .with_style(container_style)
768 .boxed();
769
770 if self.deployed_from_indicator {
771 *cursor_position.column_mut() = 0;
772 }
773
774 (cursor_position, element)
775 }
776}
777
778#[derive(Debug)]
779struct ActiveDiagnosticGroup {
780 primary_range: Range<Anchor>,
781 primary_message: String,
782 blocks: HashMap<BlockId, Diagnostic>,
783 is_valid: bool,
784}
785
786#[derive(Serialize, Deserialize)]
787struct ClipboardSelection {
788 len: usize,
789 is_entire_line: bool,
790}
791
792pub struct NavigationData {
793 anchor: Anchor,
794 offset: usize,
795}
796
797impl Editor {
798 pub fn single_line(
799 settings: watch::Receiver<Settings>,
800 field_editor_style: Option<GetFieldEditorTheme>,
801 cx: &mut ViewContext<Self>,
802 ) -> Self {
803 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
804 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
805 Self::new(
806 EditorMode::SingleLine,
807 buffer,
808 None,
809 settings,
810 field_editor_style,
811 cx,
812 )
813 }
814
815 pub fn auto_height(
816 max_lines: usize,
817 settings: watch::Receiver<Settings>,
818 field_editor_style: Option<GetFieldEditorTheme>,
819 cx: &mut ViewContext<Self>,
820 ) -> Self {
821 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
822 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
823 Self::new(
824 EditorMode::AutoHeight { max_lines },
825 buffer,
826 None,
827 settings,
828 field_editor_style,
829 cx,
830 )
831 }
832
833 pub fn for_buffer(
834 buffer: ModelHandle<MultiBuffer>,
835 project: Option<ModelHandle<Project>>,
836 settings: watch::Receiver<Settings>,
837 cx: &mut ViewContext<Self>,
838 ) -> Self {
839 Self::new(EditorMode::Full, buffer, project, settings, None, cx)
840 }
841
842 pub fn clone(&self, nav_history: ItemNavHistory, cx: &mut ViewContext<Self>) -> Self {
843 let mut clone = Self::new(
844 self.mode,
845 self.buffer.clone(),
846 self.project.clone(),
847 self.settings.clone(),
848 self.get_field_editor_theme,
849 cx,
850 );
851 clone.scroll_position = self.scroll_position;
852 clone.scroll_top_anchor = self.scroll_top_anchor.clone();
853 clone.nav_history = Some(nav_history);
854 clone.searchable = self.searchable;
855 clone
856 }
857
858 fn new(
859 mode: EditorMode,
860 buffer: ModelHandle<MultiBuffer>,
861 project: Option<ModelHandle<Project>>,
862 settings: watch::Receiver<Settings>,
863 get_field_editor_theme: Option<GetFieldEditorTheme>,
864 cx: &mut ViewContext<Self>,
865 ) -> Self {
866 let display_map = cx.add_model(|cx| {
867 let settings = settings.borrow();
868 let style = build_style(&*settings, get_field_editor_theme, cx);
869 DisplayMap::new(
870 buffer.clone(),
871 settings.tab_size,
872 style.text.font_id,
873 style.text.font_size,
874 None,
875 2,
876 1,
877 cx,
878 )
879 });
880 cx.observe(&buffer, Self::on_buffer_changed).detach();
881 cx.subscribe(&buffer, Self::on_buffer_event).detach();
882 cx.observe(&display_map, Self::on_display_map_changed)
883 .detach();
884
885 let mut this = Self {
886 handle: cx.weak_handle(),
887 buffer,
888 display_map,
889 selections: Arc::from([]),
890 pending_selection: Some(PendingSelection {
891 selection: Selection {
892 id: 0,
893 start: Anchor::min(),
894 end: Anchor::min(),
895 reversed: false,
896 goal: SelectionGoal::None,
897 },
898 mode: SelectMode::Character,
899 }),
900 columnar_selection_tail: None,
901 next_selection_id: 1,
902 add_selections_state: None,
903 select_next_state: None,
904 selection_history: Default::default(),
905 autoclose_stack: Default::default(),
906 snippet_stack: Default::default(),
907 select_larger_syntax_node_stack: Vec::new(),
908 active_diagnostics: None,
909 settings,
910 soft_wrap_mode_override: None,
911 get_field_editor_theme,
912 project,
913 scroll_position: Vector2F::zero(),
914 scroll_top_anchor: None,
915 autoscroll_request: None,
916 focused: false,
917 show_local_cursors: false,
918 blink_epoch: 0,
919 blinking_paused: false,
920 mode,
921 vertical_scroll_margin: 3.0,
922 placeholder_text: None,
923 highlighted_rows: None,
924 highlighted_ranges: Default::default(),
925 nav_history: None,
926 context_menu: None,
927 completion_tasks: Default::default(),
928 next_completion_id: 0,
929 available_code_actions: Default::default(),
930 code_actions_task: Default::default(),
931 document_highlights_task: Default::default(),
932 pending_rename: Default::default(),
933 searchable: true,
934 cursor_shape: Default::default(),
935 };
936 this.end_selection(cx);
937 this
938 }
939
940 pub fn open_new(
941 workspace: &mut Workspace,
942 _: &workspace::OpenNew,
943 cx: &mut ViewContext<Workspace>,
944 ) {
945 let project = workspace.project();
946 if project.read(cx).is_remote() {
947 cx.propagate_action();
948 } else if let Some(buffer) = project
949 .update(cx, |project, cx| project.create_buffer(cx))
950 .log_err()
951 {
952 workspace.open_item(BufferItemHandle(buffer), cx);
953 }
954 }
955
956 pub fn replica_id(&self, cx: &AppContext) -> ReplicaId {
957 self.buffer.read(cx).replica_id()
958 }
959
960 pub fn buffer(&self) -> &ModelHandle<MultiBuffer> {
961 &self.buffer
962 }
963
964 pub fn title(&self, cx: &AppContext) -> String {
965 self.buffer().read(cx).title(cx)
966 }
967
968 pub fn snapshot(&mut self, cx: &mut MutableAppContext) -> EditorSnapshot {
969 EditorSnapshot {
970 mode: self.mode,
971 display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
972 scroll_position: self.scroll_position,
973 scroll_top_anchor: self.scroll_top_anchor.clone(),
974 placeholder_text: self.placeholder_text.clone(),
975 is_focused: self
976 .handle
977 .upgrade(cx)
978 .map_or(false, |handle| handle.is_focused(cx)),
979 }
980 }
981
982 pub fn language<'a>(&self, cx: &'a AppContext) -> Option<&'a Arc<Language>> {
983 self.buffer.read(cx).language(cx)
984 }
985
986 fn style(&self, cx: &AppContext) -> EditorStyle {
987 build_style(&*self.settings.borrow(), self.get_field_editor_theme, cx)
988 }
989
990 pub fn set_placeholder_text(
991 &mut self,
992 placeholder_text: impl Into<Arc<str>>,
993 cx: &mut ViewContext<Self>,
994 ) {
995 self.placeholder_text = Some(placeholder_text.into());
996 cx.notify();
997 }
998
999 pub fn set_vertical_scroll_margin(&mut self, margin_rows: usize, cx: &mut ViewContext<Self>) {
1000 self.vertical_scroll_margin = margin_rows as f32;
1001 cx.notify();
1002 }
1003
1004 pub fn set_scroll_position(&mut self, scroll_position: Vector2F, cx: &mut ViewContext<Self>) {
1005 let map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1006
1007 if scroll_position.y() == 0. {
1008 self.scroll_top_anchor = None;
1009 self.scroll_position = scroll_position;
1010 } else {
1011 let scroll_top_buffer_offset =
1012 DisplayPoint::new(scroll_position.y() as u32, 0).to_offset(&map, Bias::Right);
1013 let anchor = map
1014 .buffer_snapshot
1015 .anchor_at(scroll_top_buffer_offset, Bias::Right);
1016 self.scroll_position = vec2f(
1017 scroll_position.x(),
1018 scroll_position.y() - anchor.to_display_point(&map).row() as f32,
1019 );
1020 self.scroll_top_anchor = Some(anchor);
1021 }
1022
1023 cx.notify();
1024 }
1025
1026 pub fn set_cursor_shape(&mut self, cursor_shape: CursorShape, cx: &mut ViewContext<Self>) {
1027 self.cursor_shape = cursor_shape;
1028 cx.notify();
1029 }
1030
1031 pub fn scroll_position(&self, cx: &mut ViewContext<Self>) -> Vector2F {
1032 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1033 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor)
1034 }
1035
1036 pub fn clamp_scroll_left(&mut self, max: f32) -> bool {
1037 if max < self.scroll_position.x() {
1038 self.scroll_position.set_x(max);
1039 true
1040 } else {
1041 false
1042 }
1043 }
1044
1045 pub fn autoscroll_vertically(
1046 &mut self,
1047 viewport_height: f32,
1048 line_height: f32,
1049 cx: &mut ViewContext<Self>,
1050 ) -> bool {
1051 let visible_lines = viewport_height / line_height;
1052 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1053 let mut scroll_position =
1054 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor);
1055 let max_scroll_top = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
1056 (display_map.max_point().row() as f32 - visible_lines + 1.).max(0.)
1057 } else {
1058 display_map.max_point().row().saturating_sub(1) as f32
1059 };
1060 if scroll_position.y() > max_scroll_top {
1061 scroll_position.set_y(max_scroll_top);
1062 self.set_scroll_position(scroll_position, cx);
1063 }
1064
1065 let autoscroll = if let Some(autoscroll) = self.autoscroll_request.take() {
1066 autoscroll
1067 } else {
1068 return false;
1069 };
1070
1071 let first_cursor_top;
1072 let last_cursor_bottom;
1073 if let Some(highlighted_rows) = &self.highlighted_rows {
1074 first_cursor_top = highlighted_rows.start as f32;
1075 last_cursor_bottom = first_cursor_top + 1.;
1076 } else if autoscroll == Autoscroll::Newest {
1077 let newest_selection =
1078 self.newest_selection_with_snapshot::<Point>(&display_map.buffer_snapshot);
1079 first_cursor_top = newest_selection.head().to_display_point(&display_map).row() as f32;
1080 last_cursor_bottom = first_cursor_top + 1.;
1081 } else {
1082 let selections = self.local_selections::<Point>(cx);
1083 first_cursor_top = selections
1084 .first()
1085 .unwrap()
1086 .head()
1087 .to_display_point(&display_map)
1088 .row() as f32;
1089 last_cursor_bottom = selections
1090 .last()
1091 .unwrap()
1092 .head()
1093 .to_display_point(&display_map)
1094 .row() as f32
1095 + 1.0;
1096 }
1097
1098 let margin = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
1099 0.
1100 } else {
1101 ((visible_lines - (last_cursor_bottom - first_cursor_top)) / 2.0).floor()
1102 };
1103 if margin < 0.0 {
1104 return false;
1105 }
1106
1107 match autoscroll {
1108 Autoscroll::Fit | Autoscroll::Newest => {
1109 let margin = margin.min(self.vertical_scroll_margin);
1110 let target_top = (first_cursor_top - margin).max(0.0);
1111 let target_bottom = last_cursor_bottom + margin;
1112 let start_row = scroll_position.y();
1113 let end_row = start_row + visible_lines;
1114
1115 if target_top < start_row {
1116 scroll_position.set_y(target_top);
1117 self.set_scroll_position(scroll_position, cx);
1118 } else if target_bottom >= end_row {
1119 scroll_position.set_y(target_bottom - visible_lines);
1120 self.set_scroll_position(scroll_position, cx);
1121 }
1122 }
1123 Autoscroll::Center => {
1124 scroll_position.set_y((first_cursor_top - margin).max(0.0));
1125 self.set_scroll_position(scroll_position, cx);
1126 }
1127 }
1128
1129 true
1130 }
1131
1132 pub fn autoscroll_horizontally(
1133 &mut self,
1134 start_row: u32,
1135 viewport_width: f32,
1136 scroll_width: f32,
1137 max_glyph_width: f32,
1138 layouts: &[text_layout::Line],
1139 cx: &mut ViewContext<Self>,
1140 ) -> bool {
1141 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1142 let selections = self.local_selections::<Point>(cx);
1143
1144 let mut target_left;
1145 let mut target_right;
1146
1147 if self.highlighted_rows.is_some() {
1148 target_left = 0.0_f32;
1149 target_right = 0.0_f32;
1150 } else {
1151 target_left = std::f32::INFINITY;
1152 target_right = 0.0_f32;
1153 for selection in selections {
1154 let head = selection.head().to_display_point(&display_map);
1155 if head.row() >= start_row && head.row() < start_row + layouts.len() as u32 {
1156 let start_column = head.column().saturating_sub(3);
1157 let end_column = cmp::min(display_map.line_len(head.row()), head.column() + 3);
1158 target_left = target_left.min(
1159 layouts[(head.row() - start_row) as usize]
1160 .x_for_index(start_column as usize),
1161 );
1162 target_right = target_right.max(
1163 layouts[(head.row() - start_row) as usize].x_for_index(end_column as usize)
1164 + max_glyph_width,
1165 );
1166 }
1167 }
1168 }
1169
1170 target_right = target_right.min(scroll_width);
1171
1172 if target_right - target_left > viewport_width {
1173 return false;
1174 }
1175
1176 let scroll_left = self.scroll_position.x() * max_glyph_width;
1177 let scroll_right = scroll_left + viewport_width;
1178
1179 if target_left < scroll_left {
1180 self.scroll_position.set_x(target_left / max_glyph_width);
1181 true
1182 } else if target_right > scroll_right {
1183 self.scroll_position
1184 .set_x((target_right - viewport_width) / max_glyph_width);
1185 true
1186 } else {
1187 false
1188 }
1189 }
1190
1191 fn select(&mut self, Select(phase): &Select, cx: &mut ViewContext<Self>) {
1192 self.hide_context_menu(cx);
1193
1194 match phase {
1195 SelectPhase::Begin {
1196 position,
1197 add,
1198 click_count,
1199 } => self.begin_selection(*position, *add, *click_count, cx),
1200 SelectPhase::BeginColumnar {
1201 position,
1202 overshoot,
1203 } => self.begin_columnar_selection(*position, *overshoot, cx),
1204 SelectPhase::Extend {
1205 position,
1206 click_count,
1207 } => self.extend_selection(*position, *click_count, cx),
1208 SelectPhase::Update {
1209 position,
1210 overshoot,
1211 scroll_position,
1212 } => self.update_selection(*position, *overshoot, *scroll_position, cx),
1213 SelectPhase::End => self.end_selection(cx),
1214 }
1215 }
1216
1217 fn extend_selection(
1218 &mut self,
1219 position: DisplayPoint,
1220 click_count: usize,
1221 cx: &mut ViewContext<Self>,
1222 ) {
1223 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1224 let tail = self
1225 .newest_selection_with_snapshot::<usize>(&display_map.buffer_snapshot)
1226 .tail();
1227 self.begin_selection(position, false, click_count, cx);
1228
1229 let position = position.to_offset(&display_map, Bias::Left);
1230 let tail_anchor = display_map.buffer_snapshot.anchor_before(tail);
1231 let mut pending = self.pending_selection.clone().unwrap();
1232
1233 if position >= tail {
1234 pending.selection.start = tail_anchor.clone();
1235 } else {
1236 pending.selection.end = tail_anchor.clone();
1237 pending.selection.reversed = true;
1238 }
1239
1240 match &mut pending.mode {
1241 SelectMode::Word(range) | SelectMode::Line(range) => {
1242 *range = tail_anchor.clone()..tail_anchor
1243 }
1244 _ => {}
1245 }
1246
1247 self.set_selections(self.selections.clone(), Some(pending), cx);
1248 }
1249
1250 fn begin_selection(
1251 &mut self,
1252 position: DisplayPoint,
1253 add: bool,
1254 click_count: usize,
1255 cx: &mut ViewContext<Self>,
1256 ) {
1257 if !self.focused {
1258 cx.focus_self();
1259 cx.emit(Event::Activate);
1260 }
1261
1262 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1263 let buffer = &display_map.buffer_snapshot;
1264 let newest_selection = self.newest_anchor_selection().clone();
1265
1266 let start;
1267 let end;
1268 let mode;
1269 match click_count {
1270 1 => {
1271 start = buffer.anchor_before(position.to_point(&display_map));
1272 end = start.clone();
1273 mode = SelectMode::Character;
1274 }
1275 2 => {
1276 let range = movement::surrounding_word(&display_map, position);
1277 start = buffer.anchor_before(range.start.to_point(&display_map));
1278 end = buffer.anchor_before(range.end.to_point(&display_map));
1279 mode = SelectMode::Word(start.clone()..end.clone());
1280 }
1281 3 => {
1282 let position = display_map
1283 .clip_point(position, Bias::Left)
1284 .to_point(&display_map);
1285 let line_start = display_map.prev_line_boundary(position).0;
1286 let next_line_start = buffer.clip_point(
1287 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1288 Bias::Left,
1289 );
1290 start = buffer.anchor_before(line_start);
1291 end = buffer.anchor_before(next_line_start);
1292 mode = SelectMode::Line(start.clone()..end.clone());
1293 }
1294 _ => {
1295 start = buffer.anchor_before(0);
1296 end = buffer.anchor_before(buffer.len());
1297 mode = SelectMode::All;
1298 }
1299 }
1300
1301 self.push_to_nav_history(newest_selection.head(), Some(end.to_point(&buffer)), cx);
1302
1303 let selection = Selection {
1304 id: post_inc(&mut self.next_selection_id),
1305 start,
1306 end,
1307 reversed: false,
1308 goal: SelectionGoal::None,
1309 };
1310
1311 let mut selections;
1312 if add {
1313 selections = self.selections.clone();
1314 // Remove the newest selection if it was added due to a previous mouse up
1315 // within this multi-click.
1316 if click_count > 1 {
1317 selections = self
1318 .selections
1319 .iter()
1320 .filter(|selection| selection.id != newest_selection.id)
1321 .cloned()
1322 .collect();
1323 }
1324 } else {
1325 selections = Arc::from([]);
1326 }
1327 self.set_selections(selections, Some(PendingSelection { selection, mode }), cx);
1328
1329 cx.notify();
1330 }
1331
1332 fn begin_columnar_selection(
1333 &mut self,
1334 position: DisplayPoint,
1335 overshoot: u32,
1336 cx: &mut ViewContext<Self>,
1337 ) {
1338 if !self.focused {
1339 cx.focus_self();
1340 cx.emit(Event::Activate);
1341 }
1342
1343 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1344 let tail = self
1345 .newest_selection_with_snapshot::<Point>(&display_map.buffer_snapshot)
1346 .tail();
1347 self.columnar_selection_tail = Some(display_map.buffer_snapshot.anchor_before(tail));
1348
1349 self.select_columns(
1350 tail.to_display_point(&display_map),
1351 position,
1352 overshoot,
1353 &display_map,
1354 cx,
1355 );
1356 }
1357
1358 fn update_selection(
1359 &mut self,
1360 position: DisplayPoint,
1361 overshoot: u32,
1362 scroll_position: Vector2F,
1363 cx: &mut ViewContext<Self>,
1364 ) {
1365 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1366
1367 if let Some(tail) = self.columnar_selection_tail.as_ref() {
1368 let tail = tail.to_display_point(&display_map);
1369 self.select_columns(tail, position, overshoot, &display_map, cx);
1370 } else if let Some(mut pending) = self.pending_selection.clone() {
1371 let buffer = self.buffer.read(cx).snapshot(cx);
1372 let head;
1373 let tail;
1374 match &pending.mode {
1375 SelectMode::Character => {
1376 head = position.to_point(&display_map);
1377 tail = pending.selection.tail().to_point(&buffer);
1378 }
1379 SelectMode::Word(original_range) => {
1380 let original_display_range = original_range.start.to_display_point(&display_map)
1381 ..original_range.end.to_display_point(&display_map);
1382 let original_buffer_range = original_display_range.start.to_point(&display_map)
1383 ..original_display_range.end.to_point(&display_map);
1384 if movement::is_inside_word(&display_map, position)
1385 || original_display_range.contains(&position)
1386 {
1387 let word_range = movement::surrounding_word(&display_map, position);
1388 if word_range.start < original_display_range.start {
1389 head = word_range.start.to_point(&display_map);
1390 } else {
1391 head = word_range.end.to_point(&display_map);
1392 }
1393 } else {
1394 head = position.to_point(&display_map);
1395 }
1396
1397 if head <= original_buffer_range.start {
1398 tail = original_buffer_range.end;
1399 } else {
1400 tail = original_buffer_range.start;
1401 }
1402 }
1403 SelectMode::Line(original_range) => {
1404 let original_range = original_range.to_point(&display_map.buffer_snapshot);
1405
1406 let position = display_map
1407 .clip_point(position, Bias::Left)
1408 .to_point(&display_map);
1409 let line_start = display_map.prev_line_boundary(position).0;
1410 let next_line_start = buffer.clip_point(
1411 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1412 Bias::Left,
1413 );
1414
1415 if line_start < original_range.start {
1416 head = line_start
1417 } else {
1418 head = next_line_start
1419 }
1420
1421 if head <= original_range.start {
1422 tail = original_range.end;
1423 } else {
1424 tail = original_range.start;
1425 }
1426 }
1427 SelectMode::All => {
1428 return;
1429 }
1430 };
1431
1432 if head < tail {
1433 pending.selection.start = buffer.anchor_before(head);
1434 pending.selection.end = buffer.anchor_before(tail);
1435 pending.selection.reversed = true;
1436 } else {
1437 pending.selection.start = buffer.anchor_before(tail);
1438 pending.selection.end = buffer.anchor_before(head);
1439 pending.selection.reversed = false;
1440 }
1441 self.set_selections(self.selections.clone(), Some(pending), cx);
1442 } else {
1443 log::error!("update_selection dispatched with no pending selection");
1444 return;
1445 }
1446
1447 self.set_scroll_position(scroll_position, cx);
1448 cx.notify();
1449 }
1450
1451 fn end_selection(&mut self, cx: &mut ViewContext<Self>) {
1452 self.columnar_selection_tail.take();
1453 if self.pending_selection.is_some() {
1454 let selections = self.local_selections::<usize>(cx);
1455 self.update_selections(selections, None, cx);
1456 }
1457 }
1458
1459 fn select_columns(
1460 &mut self,
1461 tail: DisplayPoint,
1462 head: DisplayPoint,
1463 overshoot: u32,
1464 display_map: &DisplaySnapshot,
1465 cx: &mut ViewContext<Self>,
1466 ) {
1467 let start_row = cmp::min(tail.row(), head.row());
1468 let end_row = cmp::max(tail.row(), head.row());
1469 let start_column = cmp::min(tail.column(), head.column() + overshoot);
1470 let end_column = cmp::max(tail.column(), head.column() + overshoot);
1471 let reversed = start_column < tail.column();
1472
1473 let selections = (start_row..=end_row)
1474 .filter_map(|row| {
1475 if start_column <= display_map.line_len(row) && !display_map.is_block_line(row) {
1476 let start = display_map
1477 .clip_point(DisplayPoint::new(row, start_column), Bias::Left)
1478 .to_point(&display_map);
1479 let end = display_map
1480 .clip_point(DisplayPoint::new(row, end_column), Bias::Right)
1481 .to_point(&display_map);
1482 Some(Selection {
1483 id: post_inc(&mut self.next_selection_id),
1484 start,
1485 end,
1486 reversed,
1487 goal: SelectionGoal::None,
1488 })
1489 } else {
1490 None
1491 }
1492 })
1493 .collect::<Vec<_>>();
1494
1495 self.update_selections(selections, None, cx);
1496 cx.notify();
1497 }
1498
1499 pub fn is_selecting(&self) -> bool {
1500 self.pending_selection.is_some() || self.columnar_selection_tail.is_some()
1501 }
1502
1503 pub fn cancel(&mut self, _: &Cancel, cx: &mut ViewContext<Self>) {
1504 if self.take_rename(cx).is_some() {
1505 return;
1506 }
1507
1508 if self.hide_context_menu(cx).is_some() {
1509 return;
1510 }
1511
1512 if self.snippet_stack.pop().is_some() {
1513 return;
1514 }
1515
1516 if self.mode != EditorMode::Full {
1517 cx.propagate_action();
1518 return;
1519 }
1520
1521 if self.active_diagnostics.is_some() {
1522 self.dismiss_diagnostics(cx);
1523 } else if let Some(pending) = self.pending_selection.clone() {
1524 let mut selections = self.selections.clone();
1525 if selections.is_empty() {
1526 selections = Arc::from([pending.selection]);
1527 }
1528 self.set_selections(selections, None, cx);
1529 self.request_autoscroll(Autoscroll::Fit, cx);
1530 } else {
1531 let mut oldest_selection = self.oldest_selection::<usize>(&cx);
1532 if self.selection_count() == 1 {
1533 if oldest_selection.is_empty() {
1534 cx.propagate_action();
1535 return;
1536 }
1537
1538 oldest_selection.start = oldest_selection.head().clone();
1539 oldest_selection.end = oldest_selection.head().clone();
1540 }
1541 self.update_selections(vec![oldest_selection], Some(Autoscroll::Fit), cx);
1542 }
1543 }
1544
1545 #[cfg(any(test, feature = "test-support"))]
1546 pub fn selected_ranges<D: TextDimension + Ord + Sub<D, Output = D>>(
1547 &self,
1548 cx: &mut MutableAppContext,
1549 ) -> Vec<Range<D>> {
1550 self.local_selections::<D>(cx)
1551 .iter()
1552 .map(|s| {
1553 if s.reversed {
1554 s.end.clone()..s.start.clone()
1555 } else {
1556 s.start.clone()..s.end.clone()
1557 }
1558 })
1559 .collect()
1560 }
1561
1562 #[cfg(any(test, feature = "test-support"))]
1563 pub fn selected_display_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
1564 let display_map = self
1565 .display_map
1566 .update(cx, |display_map, cx| display_map.snapshot(cx));
1567 self.selections
1568 .iter()
1569 .chain(
1570 self.pending_selection
1571 .as_ref()
1572 .map(|pending| &pending.selection),
1573 )
1574 .map(|s| {
1575 if s.reversed {
1576 s.end.to_display_point(&display_map)..s.start.to_display_point(&display_map)
1577 } else {
1578 s.start.to_display_point(&display_map)..s.end.to_display_point(&display_map)
1579 }
1580 })
1581 .collect()
1582 }
1583
1584 pub fn select_ranges<I, T>(
1585 &mut self,
1586 ranges: I,
1587 autoscroll: Option<Autoscroll>,
1588 cx: &mut ViewContext<Self>,
1589 ) where
1590 I: IntoIterator<Item = Range<T>>,
1591 T: ToOffset,
1592 {
1593 let buffer = self.buffer.read(cx).snapshot(cx);
1594 let selections = ranges
1595 .into_iter()
1596 .map(|range| {
1597 let mut start = range.start.to_offset(&buffer);
1598 let mut end = range.end.to_offset(&buffer);
1599 let reversed = if start > end {
1600 mem::swap(&mut start, &mut end);
1601 true
1602 } else {
1603 false
1604 };
1605 Selection {
1606 id: post_inc(&mut self.next_selection_id),
1607 start,
1608 end,
1609 reversed,
1610 goal: SelectionGoal::None,
1611 }
1612 })
1613 .collect::<Vec<_>>();
1614 self.update_selections(selections, autoscroll, cx);
1615 }
1616
1617 #[cfg(any(test, feature = "test-support"))]
1618 pub fn select_display_ranges<'a, T>(&mut self, ranges: T, cx: &mut ViewContext<Self>)
1619 where
1620 T: IntoIterator<Item = &'a Range<DisplayPoint>>,
1621 {
1622 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1623 let selections = ranges
1624 .into_iter()
1625 .map(|range| {
1626 let mut start = range.start;
1627 let mut end = range.end;
1628 let reversed = if start > end {
1629 mem::swap(&mut start, &mut end);
1630 true
1631 } else {
1632 false
1633 };
1634 Selection {
1635 id: post_inc(&mut self.next_selection_id),
1636 start: start.to_point(&display_map),
1637 end: end.to_point(&display_map),
1638 reversed,
1639 goal: SelectionGoal::None,
1640 }
1641 })
1642 .collect();
1643 self.update_selections(selections, None, cx);
1644 }
1645
1646 pub fn handle_input(&mut self, action: &Input, cx: &mut ViewContext<Self>) {
1647 let text = action.0.as_ref();
1648 if !self.skip_autoclose_end(text, cx) {
1649 self.start_transaction(cx);
1650 if !self.surround_with_bracket_pair(text, cx) {
1651 self.insert(text, cx);
1652 self.autoclose_bracket_pairs(cx);
1653 }
1654 self.end_transaction(cx);
1655 self.trigger_completion_on_input(text, cx);
1656 }
1657 }
1658
1659 pub fn newline(&mut self, _: &Newline, cx: &mut ViewContext<Self>) {
1660 self.start_transaction(cx);
1661 let mut old_selections = SmallVec::<[_; 32]>::new();
1662 {
1663 let selections = self.local_selections::<usize>(cx);
1664 let buffer = self.buffer.read(cx).snapshot(cx);
1665 for selection in selections.iter() {
1666 let start_point = selection.start.to_point(&buffer);
1667 let indent = buffer
1668 .indent_column_for_line(start_point.row)
1669 .min(start_point.column);
1670 let start = selection.start;
1671 let end = selection.end;
1672
1673 let mut insert_extra_newline = false;
1674 if let Some(language) = buffer.language() {
1675 let leading_whitespace_len = buffer
1676 .reversed_chars_at(start)
1677 .take_while(|c| c.is_whitespace() && *c != '\n')
1678 .map(|c| c.len_utf8())
1679 .sum::<usize>();
1680
1681 let trailing_whitespace_len = buffer
1682 .chars_at(end)
1683 .take_while(|c| c.is_whitespace() && *c != '\n')
1684 .map(|c| c.len_utf8())
1685 .sum::<usize>();
1686
1687 insert_extra_newline = language.brackets().iter().any(|pair| {
1688 let pair_start = pair.start.trim_end();
1689 let pair_end = pair.end.trim_start();
1690
1691 pair.newline
1692 && buffer.contains_str_at(end + trailing_whitespace_len, pair_end)
1693 && buffer.contains_str_at(
1694 (start - leading_whitespace_len).saturating_sub(pair_start.len()),
1695 pair_start,
1696 )
1697 });
1698 }
1699
1700 old_selections.push((
1701 selection.id,
1702 buffer.anchor_after(end),
1703 start..end,
1704 indent,
1705 insert_extra_newline,
1706 ));
1707 }
1708 }
1709
1710 self.buffer.update(cx, |buffer, cx| {
1711 let mut delta = 0_isize;
1712 let mut pending_edit: Option<PendingEdit> = None;
1713 for (_, _, range, indent, insert_extra_newline) in &old_selections {
1714 if pending_edit.as_ref().map_or(false, |pending| {
1715 pending.indent != *indent
1716 || pending.insert_extra_newline != *insert_extra_newline
1717 }) {
1718 let pending = pending_edit.take().unwrap();
1719 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1720 new_text.push('\n');
1721 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1722 if pending.insert_extra_newline {
1723 new_text = new_text.repeat(2);
1724 }
1725 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1726 delta += pending.delta;
1727 }
1728
1729 let start = (range.start as isize + delta) as usize;
1730 let end = (range.end as isize + delta) as usize;
1731 let mut text_len = *indent as usize + 1;
1732 if *insert_extra_newline {
1733 text_len *= 2;
1734 }
1735
1736 let pending = pending_edit.get_or_insert_with(Default::default);
1737 pending.delta += text_len as isize - (end - start) as isize;
1738 pending.indent = *indent;
1739 pending.insert_extra_newline = *insert_extra_newline;
1740 pending.ranges.push(start..end);
1741 }
1742
1743 let pending = pending_edit.unwrap();
1744 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1745 new_text.push('\n');
1746 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1747 if pending.insert_extra_newline {
1748 new_text = new_text.repeat(2);
1749 }
1750 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1751
1752 let buffer = buffer.read(cx);
1753 self.selections = self
1754 .selections
1755 .iter()
1756 .cloned()
1757 .zip(old_selections)
1758 .map(
1759 |(mut new_selection, (_, end_anchor, _, _, insert_extra_newline))| {
1760 let mut cursor = end_anchor.to_point(&buffer);
1761 if insert_extra_newline {
1762 cursor.row -= 1;
1763 cursor.column = buffer.line_len(cursor.row);
1764 }
1765 let anchor = buffer.anchor_after(cursor);
1766 new_selection.start = anchor.clone();
1767 new_selection.end = anchor;
1768 new_selection
1769 },
1770 )
1771 .collect();
1772 });
1773
1774 self.request_autoscroll(Autoscroll::Fit, cx);
1775 self.end_transaction(cx);
1776
1777 #[derive(Default)]
1778 struct PendingEdit {
1779 indent: u32,
1780 insert_extra_newline: bool,
1781 delta: isize,
1782 ranges: SmallVec<[Range<usize>; 32]>,
1783 }
1784 }
1785
1786 pub fn insert(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1787 self.start_transaction(cx);
1788
1789 let old_selections = self.local_selections::<usize>(cx);
1790 let selection_anchors = self.buffer.update(cx, |buffer, cx| {
1791 let anchors = {
1792 let snapshot = buffer.read(cx);
1793 old_selections
1794 .iter()
1795 .map(|s| (s.id, s.goal, snapshot.anchor_after(s.end)))
1796 .collect::<Vec<_>>()
1797 };
1798 let edit_ranges = old_selections.iter().map(|s| s.start..s.end);
1799 buffer.edit_with_autoindent(edit_ranges, text, cx);
1800 anchors
1801 });
1802
1803 let selections = {
1804 let snapshot = self.buffer.read(cx).read(cx);
1805 selection_anchors
1806 .into_iter()
1807 .map(|(id, goal, position)| {
1808 let position = position.to_offset(&snapshot);
1809 Selection {
1810 id,
1811 start: position,
1812 end: position,
1813 goal,
1814 reversed: false,
1815 }
1816 })
1817 .collect()
1818 };
1819 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1820 self.end_transaction(cx);
1821 }
1822
1823 fn trigger_completion_on_input(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1824 let selection = self.newest_anchor_selection();
1825 if self
1826 .buffer
1827 .read(cx)
1828 .is_completion_trigger(selection.head(), text, cx)
1829 {
1830 self.show_completions(&ShowCompletions, cx);
1831 } else {
1832 self.hide_context_menu(cx);
1833 }
1834 }
1835
1836 fn surround_with_bracket_pair(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
1837 let snapshot = self.buffer.read(cx).snapshot(cx);
1838 if let Some(pair) = snapshot
1839 .language()
1840 .and_then(|language| language.brackets().iter().find(|b| b.start == text))
1841 .cloned()
1842 {
1843 if self
1844 .local_selections::<usize>(cx)
1845 .iter()
1846 .any(|selection| selection.is_empty())
1847 {
1848 false
1849 } else {
1850 let mut selections = self.selections.to_vec();
1851 for selection in &mut selections {
1852 selection.end = selection.end.bias_left(&snapshot);
1853 }
1854 drop(snapshot);
1855
1856 self.buffer.update(cx, |buffer, cx| {
1857 buffer.edit(
1858 selections.iter().map(|s| s.start.clone()..s.start.clone()),
1859 &pair.start,
1860 cx,
1861 );
1862 buffer.edit(
1863 selections.iter().map(|s| s.end.clone()..s.end.clone()),
1864 &pair.end,
1865 cx,
1866 );
1867 });
1868
1869 let snapshot = self.buffer.read(cx).read(cx);
1870 for selection in &mut selections {
1871 selection.end = selection.end.bias_right(&snapshot);
1872 }
1873 drop(snapshot);
1874
1875 self.set_selections(selections.into(), None, cx);
1876 true
1877 }
1878 } else {
1879 false
1880 }
1881 }
1882
1883 fn autoclose_bracket_pairs(&mut self, cx: &mut ViewContext<Self>) {
1884 let selections = self.local_selections::<usize>(cx);
1885 let mut bracket_pair_state = None;
1886 let mut new_selections = None;
1887 self.buffer.update(cx, |buffer, cx| {
1888 let mut snapshot = buffer.snapshot(cx);
1889 let left_biased_selections = selections
1890 .iter()
1891 .map(|selection| Selection {
1892 id: selection.id,
1893 start: snapshot.anchor_before(selection.start),
1894 end: snapshot.anchor_before(selection.end),
1895 reversed: selection.reversed,
1896 goal: selection.goal,
1897 })
1898 .collect::<Vec<_>>();
1899
1900 let autoclose_pair = snapshot.language().and_then(|language| {
1901 let first_selection_start = selections.first().unwrap().start;
1902 let pair = language.brackets().iter().find(|pair| {
1903 snapshot.contains_str_at(
1904 first_selection_start.saturating_sub(pair.start.len()),
1905 &pair.start,
1906 )
1907 });
1908 pair.and_then(|pair| {
1909 let should_autoclose = selections.iter().all(|selection| {
1910 // Ensure all selections are parked at the end of a pair start.
1911 if snapshot.contains_str_at(
1912 selection.start.saturating_sub(pair.start.len()),
1913 &pair.start,
1914 ) {
1915 // Autoclose only if the next character is a whitespace or a pair end
1916 // (possibly a different one from the pair we are inserting).
1917 snapshot
1918 .chars_at(selection.start)
1919 .next()
1920 .map_or(true, |ch| ch.is_whitespace())
1921 || language.brackets().iter().any(|pair| {
1922 snapshot.contains_str_at(selection.start, &pair.end)
1923 })
1924 } else {
1925 false
1926 }
1927 });
1928
1929 if should_autoclose {
1930 Some(pair.clone())
1931 } else {
1932 None
1933 }
1934 })
1935 });
1936
1937 if let Some(pair) = autoclose_pair {
1938 let selection_ranges = selections
1939 .iter()
1940 .map(|selection| {
1941 let start = selection.start.to_offset(&snapshot);
1942 start..start
1943 })
1944 .collect::<SmallVec<[_; 32]>>();
1945
1946 buffer.edit(selection_ranges, &pair.end, cx);
1947 snapshot = buffer.snapshot(cx);
1948
1949 new_selections = Some(
1950 self.resolve_selections::<usize, _>(left_biased_selections.iter(), &snapshot)
1951 .collect::<Vec<_>>(),
1952 );
1953
1954 if pair.end.len() == 1 {
1955 let mut delta = 0;
1956 bracket_pair_state = Some(BracketPairState {
1957 ranges: selections
1958 .iter()
1959 .map(move |selection| {
1960 let offset = selection.start + delta;
1961 delta += 1;
1962 snapshot.anchor_before(offset)..snapshot.anchor_after(offset)
1963 })
1964 .collect(),
1965 pair,
1966 });
1967 }
1968 }
1969 });
1970
1971 if let Some(new_selections) = new_selections {
1972 self.update_selections(new_selections, None, cx);
1973 }
1974 if let Some(bracket_pair_state) = bracket_pair_state {
1975 self.autoclose_stack.push(bracket_pair_state);
1976 }
1977 }
1978
1979 fn skip_autoclose_end(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
1980 let old_selections = self.local_selections::<usize>(cx);
1981 let autoclose_pair = if let Some(autoclose_pair) = self.autoclose_stack.last() {
1982 autoclose_pair
1983 } else {
1984 return false;
1985 };
1986 if text != autoclose_pair.pair.end {
1987 return false;
1988 }
1989
1990 debug_assert_eq!(old_selections.len(), autoclose_pair.ranges.len());
1991
1992 let buffer = self.buffer.read(cx).snapshot(cx);
1993 if old_selections
1994 .iter()
1995 .zip(autoclose_pair.ranges.iter().map(|r| r.to_offset(&buffer)))
1996 .all(|(selection, autoclose_range)| {
1997 let autoclose_range_end = autoclose_range.end.to_offset(&buffer);
1998 selection.is_empty() && selection.start == autoclose_range_end
1999 })
2000 {
2001 let new_selections = old_selections
2002 .into_iter()
2003 .map(|selection| {
2004 let cursor = selection.start + 1;
2005 Selection {
2006 id: selection.id,
2007 start: cursor,
2008 end: cursor,
2009 reversed: false,
2010 goal: SelectionGoal::None,
2011 }
2012 })
2013 .collect();
2014 self.autoclose_stack.pop();
2015 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2016 true
2017 } else {
2018 false
2019 }
2020 }
2021
2022 fn completion_query(buffer: &MultiBufferSnapshot, position: impl ToOffset) -> Option<String> {
2023 let offset = position.to_offset(buffer);
2024 let (word_range, kind) = buffer.surrounding_word(offset);
2025 if offset > word_range.start && kind == Some(CharKind::Word) {
2026 Some(
2027 buffer
2028 .text_for_range(word_range.start..offset)
2029 .collect::<String>(),
2030 )
2031 } else {
2032 None
2033 }
2034 }
2035
2036 fn show_completions(&mut self, _: &ShowCompletions, cx: &mut ViewContext<Self>) {
2037 if self.pending_rename.is_some() {
2038 return;
2039 }
2040
2041 let project = if let Some(project) = self.project.clone() {
2042 project
2043 } else {
2044 return;
2045 };
2046
2047 let position = self.newest_anchor_selection().head();
2048 let (buffer, buffer_position) = if let Some(output) = self
2049 .buffer
2050 .read(cx)
2051 .text_anchor_for_position(position.clone(), cx)
2052 {
2053 output
2054 } else {
2055 return;
2056 };
2057
2058 let query = Self::completion_query(&self.buffer.read(cx).read(cx), position.clone());
2059 let completions = project.update(cx, |project, cx| {
2060 project.completions(&buffer, buffer_position.clone(), cx)
2061 });
2062
2063 let id = post_inc(&mut self.next_completion_id);
2064 let task = cx.spawn_weak(|this, mut cx| {
2065 async move {
2066 let completions = completions.await?;
2067 if completions.is_empty() {
2068 return Ok(());
2069 }
2070
2071 let mut menu = CompletionsMenu {
2072 id,
2073 initial_position: position,
2074 match_candidates: completions
2075 .iter()
2076 .enumerate()
2077 .map(|(id, completion)| {
2078 StringMatchCandidate::new(
2079 id,
2080 completion.label.text[completion.label.filter_range.clone()].into(),
2081 )
2082 })
2083 .collect(),
2084 buffer,
2085 completions: completions.into(),
2086 matches: Vec::new().into(),
2087 selected_item: 0,
2088 list: Default::default(),
2089 };
2090
2091 menu.filter(query.as_deref(), cx.background()).await;
2092
2093 if let Some(this) = this.upgrade(&cx) {
2094 this.update(&mut cx, |this, cx| {
2095 match this.context_menu.as_ref() {
2096 None => {}
2097 Some(ContextMenu::Completions(prev_menu)) => {
2098 if prev_menu.id > menu.id {
2099 return;
2100 }
2101 }
2102 _ => return,
2103 }
2104
2105 this.completion_tasks.retain(|(id, _)| *id > menu.id);
2106 if this.focused {
2107 this.show_context_menu(ContextMenu::Completions(menu), cx);
2108 }
2109
2110 cx.notify();
2111 });
2112 }
2113 Ok::<_, anyhow::Error>(())
2114 }
2115 .log_err()
2116 });
2117 self.completion_tasks.push((id, task));
2118 }
2119
2120 pub fn confirm_completion(
2121 &mut self,
2122 ConfirmCompletion(completion_ix): &ConfirmCompletion,
2123 cx: &mut ViewContext<Self>,
2124 ) -> Option<Task<Result<()>>> {
2125 use language::ToOffset as _;
2126
2127 let completions_menu = if let ContextMenu::Completions(menu) = self.hide_context_menu(cx)? {
2128 menu
2129 } else {
2130 return None;
2131 };
2132
2133 let mat = completions_menu
2134 .matches
2135 .get(completion_ix.unwrap_or(completions_menu.selected_item))?;
2136 let buffer_handle = completions_menu.buffer;
2137 let completion = completions_menu.completions.get(mat.candidate_id)?;
2138
2139 let snippet;
2140 let text;
2141 if completion.is_snippet() {
2142 snippet = Some(Snippet::parse(&completion.new_text).log_err()?);
2143 text = snippet.as_ref().unwrap().text.clone();
2144 } else {
2145 snippet = None;
2146 text = completion.new_text.clone();
2147 };
2148 let buffer = buffer_handle.read(cx);
2149 let old_range = completion.old_range.to_offset(&buffer);
2150 let old_text = buffer.text_for_range(old_range.clone()).collect::<String>();
2151
2152 let selections = self.local_selections::<usize>(cx);
2153 let newest_selection = self.newest_anchor_selection();
2154 if newest_selection.start.buffer_id != Some(buffer_handle.id()) {
2155 return None;
2156 }
2157
2158 let lookbehind = newest_selection
2159 .start
2160 .text_anchor
2161 .to_offset(buffer)
2162 .saturating_sub(old_range.start);
2163 let lookahead = old_range
2164 .end
2165 .saturating_sub(newest_selection.end.text_anchor.to_offset(buffer));
2166 let mut common_prefix_len = old_text
2167 .bytes()
2168 .zip(text.bytes())
2169 .take_while(|(a, b)| a == b)
2170 .count();
2171
2172 let snapshot = self.buffer.read(cx).snapshot(cx);
2173 let mut ranges = Vec::new();
2174 for selection in &selections {
2175 if snapshot.contains_str_at(selection.start.saturating_sub(lookbehind), &old_text) {
2176 let start = selection.start.saturating_sub(lookbehind);
2177 let end = selection.end + lookahead;
2178 ranges.push(start + common_prefix_len..end);
2179 } else {
2180 common_prefix_len = 0;
2181 ranges.clear();
2182 ranges.extend(selections.iter().map(|s| {
2183 if s.id == newest_selection.id {
2184 old_range.clone()
2185 } else {
2186 s.start..s.end
2187 }
2188 }));
2189 break;
2190 }
2191 }
2192 let text = &text[common_prefix_len..];
2193
2194 self.start_transaction(cx);
2195 if let Some(mut snippet) = snippet {
2196 snippet.text = text.to_string();
2197 for tabstop in snippet.tabstops.iter_mut().flatten() {
2198 tabstop.start -= common_prefix_len as isize;
2199 tabstop.end -= common_prefix_len as isize;
2200 }
2201
2202 self.insert_snippet(&ranges, snippet, cx).log_err();
2203 } else {
2204 self.buffer.update(cx, |buffer, cx| {
2205 buffer.edit_with_autoindent(ranges, text, cx);
2206 });
2207 }
2208 self.end_transaction(cx);
2209
2210 let project = self.project.clone()?;
2211 let apply_edits = project.update(cx, |project, cx| {
2212 project.apply_additional_edits_for_completion(
2213 buffer_handle,
2214 completion.clone(),
2215 true,
2216 cx,
2217 )
2218 });
2219 Some(cx.foreground().spawn(async move {
2220 apply_edits.await?;
2221 Ok(())
2222 }))
2223 }
2224
2225 pub fn toggle_code_actions(
2226 &mut self,
2227 &ToggleCodeActions(deployed_from_indicator): &ToggleCodeActions,
2228 cx: &mut ViewContext<Self>,
2229 ) {
2230 if matches!(
2231 self.context_menu.as_ref(),
2232 Some(ContextMenu::CodeActions(_))
2233 ) {
2234 self.context_menu.take();
2235 cx.notify();
2236 return;
2237 }
2238
2239 let mut task = self.code_actions_task.take();
2240 cx.spawn_weak(|this, mut cx| async move {
2241 while let Some(prev_task) = task {
2242 prev_task.await;
2243 task = this
2244 .upgrade(&cx)
2245 .and_then(|this| this.update(&mut cx, |this, _| this.code_actions_task.take()));
2246 }
2247
2248 if let Some(this) = this.upgrade(&cx) {
2249 this.update(&mut cx, |this, cx| {
2250 if this.focused {
2251 if let Some((buffer, actions)) = this.available_code_actions.clone() {
2252 this.show_context_menu(
2253 ContextMenu::CodeActions(CodeActionsMenu {
2254 buffer,
2255 actions,
2256 selected_item: Default::default(),
2257 list: Default::default(),
2258 deployed_from_indicator,
2259 }),
2260 cx,
2261 );
2262 }
2263 }
2264 })
2265 }
2266 Ok::<_, anyhow::Error>(())
2267 })
2268 .detach_and_log_err(cx);
2269 }
2270
2271 pub fn confirm_code_action(
2272 workspace: &mut Workspace,
2273 ConfirmCodeAction(action_ix): &ConfirmCodeAction,
2274 cx: &mut ViewContext<Workspace>,
2275 ) -> Option<Task<Result<()>>> {
2276 let editor = workspace.active_item(cx)?.act_as::<Editor>(cx)?;
2277 let actions_menu = if let ContextMenu::CodeActions(menu) =
2278 editor.update(cx, |editor, cx| editor.hide_context_menu(cx))?
2279 {
2280 menu
2281 } else {
2282 return None;
2283 };
2284 let action_ix = action_ix.unwrap_or(actions_menu.selected_item);
2285 let action = actions_menu.actions.get(action_ix)?.clone();
2286 let title = action.lsp_action.title.clone();
2287 let buffer = actions_menu.buffer;
2288
2289 let apply_code_actions = workspace.project().clone().update(cx, |project, cx| {
2290 project.apply_code_action(buffer, action, true, cx)
2291 });
2292 Some(cx.spawn(|workspace, cx| async move {
2293 let project_transaction = apply_code_actions.await?;
2294 Self::open_project_transaction(editor, workspace, project_transaction, title, cx).await
2295 }))
2296 }
2297
2298 async fn open_project_transaction(
2299 this: ViewHandle<Editor>,
2300 workspace: ViewHandle<Workspace>,
2301 transaction: ProjectTransaction,
2302 title: String,
2303 mut cx: AsyncAppContext,
2304 ) -> Result<()> {
2305 let replica_id = this.read_with(&cx, |this, cx| this.replica_id(cx));
2306
2307 // If the code action's edits are all contained within this editor, then
2308 // avoid opening a new editor to display them.
2309 let mut entries = transaction.0.iter();
2310 if let Some((buffer, transaction)) = entries.next() {
2311 if entries.next().is_none() {
2312 let excerpt = this.read_with(&cx, |editor, cx| {
2313 editor
2314 .buffer()
2315 .read(cx)
2316 .excerpt_containing(editor.newest_anchor_selection().head(), cx)
2317 });
2318 if let Some((excerpted_buffer, excerpt_range)) = excerpt {
2319 if excerpted_buffer == *buffer {
2320 let snapshot = buffer.read_with(&cx, |buffer, _| buffer.snapshot());
2321 let excerpt_range = excerpt_range.to_offset(&snapshot);
2322 if snapshot
2323 .edited_ranges_for_transaction(transaction)
2324 .all(|range| {
2325 excerpt_range.start <= range.start && excerpt_range.end >= range.end
2326 })
2327 {
2328 return Ok(());
2329 }
2330 }
2331 }
2332 }
2333 }
2334
2335 let mut ranges_to_highlight = Vec::new();
2336 let excerpt_buffer = cx.add_model(|cx| {
2337 let mut multibuffer = MultiBuffer::new(replica_id).with_title(title);
2338 for (buffer, transaction) in &transaction.0 {
2339 let snapshot = buffer.read(cx).snapshot();
2340 ranges_to_highlight.extend(
2341 multibuffer.push_excerpts_with_context_lines(
2342 buffer.clone(),
2343 snapshot
2344 .edited_ranges_for_transaction::<usize>(transaction)
2345 .collect(),
2346 1,
2347 cx,
2348 ),
2349 );
2350 }
2351 multibuffer.push_transaction(&transaction.0);
2352 multibuffer
2353 });
2354
2355 workspace.update(&mut cx, |workspace, cx| {
2356 let editor = workspace.open_item(MultiBufferItemHandle(excerpt_buffer), cx);
2357 if let Some(editor) = editor.act_as::<Self>(cx) {
2358 editor.update(cx, |editor, cx| {
2359 let color = editor.style(cx).highlighted_line_background;
2360 editor.highlight_ranges::<Self>(ranges_to_highlight, color, cx);
2361 });
2362 }
2363 });
2364
2365 Ok(())
2366 }
2367
2368 fn refresh_code_actions(&mut self, cx: &mut ViewContext<Self>) -> Option<()> {
2369 let project = self.project.as_ref()?;
2370 let buffer = self.buffer.read(cx);
2371 let newest_selection = self.newest_anchor_selection().clone();
2372 let (start_buffer, start) = buffer.text_anchor_for_position(newest_selection.start, cx)?;
2373 let (end_buffer, end) = buffer.text_anchor_for_position(newest_selection.end, cx)?;
2374 if start_buffer != end_buffer {
2375 return None;
2376 }
2377
2378 let actions = project.update(cx, |project, cx| {
2379 project.code_actions(&start_buffer, start..end, cx)
2380 });
2381 self.code_actions_task = Some(cx.spawn_weak(|this, mut cx| async move {
2382 let actions = actions.await;
2383 if let Some(this) = this.upgrade(&cx) {
2384 this.update(&mut cx, |this, cx| {
2385 this.available_code_actions = actions.log_err().and_then(|actions| {
2386 if actions.is_empty() {
2387 None
2388 } else {
2389 Some((start_buffer, actions.into()))
2390 }
2391 });
2392 cx.notify();
2393 })
2394 }
2395 }));
2396 None
2397 }
2398
2399 fn refresh_document_highlights(&mut self, cx: &mut ViewContext<Self>) -> Option<()> {
2400 let project = self.project.as_ref()?;
2401 let buffer = self.buffer.read(cx);
2402 let newest_selection = self.newest_anchor_selection().clone();
2403 let cursor_position = newest_selection.head();
2404 let (cursor_buffer, cursor_buffer_position) =
2405 buffer.text_anchor_for_position(cursor_position.clone(), cx)?;
2406 let (tail_buffer, _) = buffer.text_anchor_for_position(newest_selection.tail(), cx)?;
2407 if cursor_buffer != tail_buffer {
2408 return None;
2409 }
2410
2411 let highlights = project.update(cx, |project, cx| {
2412 project.document_highlights(&cursor_buffer, cursor_buffer_position, cx)
2413 });
2414
2415 enum DocumentHighlightRead {}
2416 enum DocumentHighlightWrite {}
2417
2418 self.document_highlights_task = Some(cx.spawn_weak(|this, mut cx| async move {
2419 let highlights = highlights.log_err().await;
2420 if let Some((this, highlights)) = this.upgrade(&cx).zip(highlights) {
2421 this.update(&mut cx, |this, cx| {
2422 let buffer_id = cursor_position.buffer_id;
2423 let excerpt_id = cursor_position.excerpt_id.clone();
2424 let style = this.style(cx);
2425 let read_background = style.document_highlight_read_background;
2426 let write_background = style.document_highlight_write_background;
2427 let buffer = this.buffer.read(cx);
2428 if !buffer
2429 .text_anchor_for_position(cursor_position, cx)
2430 .map_or(false, |(buffer, _)| buffer == cursor_buffer)
2431 {
2432 return;
2433 }
2434
2435 let mut write_ranges = Vec::new();
2436 let mut read_ranges = Vec::new();
2437 for highlight in highlights {
2438 let range = Anchor {
2439 buffer_id,
2440 excerpt_id: excerpt_id.clone(),
2441 text_anchor: highlight.range.start,
2442 }..Anchor {
2443 buffer_id,
2444 excerpt_id: excerpt_id.clone(),
2445 text_anchor: highlight.range.end,
2446 };
2447 if highlight.kind == lsp::DocumentHighlightKind::WRITE {
2448 write_ranges.push(range);
2449 } else {
2450 read_ranges.push(range);
2451 }
2452 }
2453
2454 this.highlight_ranges::<DocumentHighlightRead>(
2455 read_ranges,
2456 read_background,
2457 cx,
2458 );
2459 this.highlight_ranges::<DocumentHighlightWrite>(
2460 write_ranges,
2461 write_background,
2462 cx,
2463 );
2464 cx.notify();
2465 });
2466 }
2467 }));
2468 None
2469 }
2470
2471 pub fn render_code_actions_indicator(
2472 &self,
2473 style: &EditorStyle,
2474 cx: &mut ViewContext<Self>,
2475 ) -> Option<ElementBox> {
2476 if self.available_code_actions.is_some() {
2477 enum Tag {}
2478 Some(
2479 MouseEventHandler::new::<Tag, _, _>(0, cx, |_, _| {
2480 Svg::new("icons/zap.svg")
2481 .with_color(style.code_actions_indicator)
2482 .boxed()
2483 })
2484 .with_cursor_style(CursorStyle::PointingHand)
2485 .with_padding(Padding::uniform(3.))
2486 .on_mouse_down(|cx| {
2487 cx.dispatch_action(ToggleCodeActions(true));
2488 })
2489 .boxed(),
2490 )
2491 } else {
2492 None
2493 }
2494 }
2495
2496 pub fn context_menu_visible(&self) -> bool {
2497 self.context_menu
2498 .as_ref()
2499 .map_or(false, |menu| menu.visible())
2500 }
2501
2502 pub fn render_context_menu(
2503 &self,
2504 cursor_position: DisplayPoint,
2505 style: EditorStyle,
2506 cx: &AppContext,
2507 ) -> Option<(DisplayPoint, ElementBox)> {
2508 self.context_menu
2509 .as_ref()
2510 .map(|menu| menu.render(cursor_position, style, cx))
2511 }
2512
2513 fn show_context_menu(&mut self, menu: ContextMenu, cx: &mut ViewContext<Self>) {
2514 if !matches!(menu, ContextMenu::Completions(_)) {
2515 self.completion_tasks.clear();
2516 }
2517 self.context_menu = Some(menu);
2518 cx.notify();
2519 }
2520
2521 fn hide_context_menu(&mut self, cx: &mut ViewContext<Self>) -> Option<ContextMenu> {
2522 cx.notify();
2523 self.completion_tasks.clear();
2524 self.context_menu.take()
2525 }
2526
2527 pub fn insert_snippet(
2528 &mut self,
2529 insertion_ranges: &[Range<usize>],
2530 snippet: Snippet,
2531 cx: &mut ViewContext<Self>,
2532 ) -> Result<()> {
2533 let tabstops = self.buffer.update(cx, |buffer, cx| {
2534 buffer.edit_with_autoindent(insertion_ranges.iter().cloned(), &snippet.text, cx);
2535
2536 let snapshot = &*buffer.read(cx);
2537 let snippet = &snippet;
2538 snippet
2539 .tabstops
2540 .iter()
2541 .map(|tabstop| {
2542 let mut tabstop_ranges = tabstop
2543 .iter()
2544 .flat_map(|tabstop_range| {
2545 let mut delta = 0 as isize;
2546 insertion_ranges.iter().map(move |insertion_range| {
2547 let insertion_start = insertion_range.start as isize + delta;
2548 delta +=
2549 snippet.text.len() as isize - insertion_range.len() as isize;
2550
2551 let start = snapshot.anchor_before(
2552 (insertion_start + tabstop_range.start) as usize,
2553 );
2554 let end = snapshot
2555 .anchor_after((insertion_start + tabstop_range.end) as usize);
2556 start..end
2557 })
2558 })
2559 .collect::<Vec<_>>();
2560 tabstop_ranges
2561 .sort_unstable_by(|a, b| a.start.cmp(&b.start, snapshot).unwrap());
2562 tabstop_ranges
2563 })
2564 .collect::<Vec<_>>()
2565 });
2566
2567 if let Some(tabstop) = tabstops.first() {
2568 self.select_ranges(tabstop.iter().cloned(), Some(Autoscroll::Fit), cx);
2569 self.snippet_stack.push(SnippetState {
2570 active_index: 0,
2571 ranges: tabstops,
2572 });
2573 }
2574
2575 Ok(())
2576 }
2577
2578 pub fn move_to_next_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) -> bool {
2579 self.move_to_snippet_tabstop(Bias::Right, cx)
2580 }
2581
2582 pub fn move_to_prev_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) {
2583 self.move_to_snippet_tabstop(Bias::Left, cx);
2584 }
2585
2586 pub fn move_to_snippet_tabstop(&mut self, bias: Bias, cx: &mut ViewContext<Self>) -> bool {
2587 let buffer = self.buffer.read(cx).snapshot(cx);
2588
2589 if let Some(snippet) = self.snippet_stack.last_mut() {
2590 match bias {
2591 Bias::Left => {
2592 if snippet.active_index > 0 {
2593 snippet.active_index -= 1;
2594 } else {
2595 return false;
2596 }
2597 }
2598 Bias::Right => {
2599 if snippet.active_index + 1 < snippet.ranges.len() {
2600 snippet.active_index += 1;
2601 } else {
2602 return false;
2603 }
2604 }
2605 }
2606 if let Some(current_ranges) = snippet.ranges.get(snippet.active_index) {
2607 let new_selections = current_ranges
2608 .iter()
2609 .map(|new_range| {
2610 let new_range = new_range.to_offset(&buffer);
2611 Selection {
2612 id: post_inc(&mut self.next_selection_id),
2613 start: new_range.start,
2614 end: new_range.end,
2615 reversed: false,
2616 goal: SelectionGoal::None,
2617 }
2618 })
2619 .collect();
2620
2621 // Remove the snippet state when moving to the last tabstop.
2622 if snippet.active_index + 1 == snippet.ranges.len() {
2623 self.snippet_stack.pop();
2624 }
2625
2626 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2627 return true;
2628 }
2629 self.snippet_stack.pop();
2630 }
2631
2632 false
2633 }
2634
2635 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
2636 self.start_transaction(cx);
2637 self.select_all(&SelectAll, cx);
2638 self.insert("", cx);
2639 self.end_transaction(cx);
2640 }
2641
2642 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
2643 self.start_transaction(cx);
2644 let mut selections = self.local_selections::<Point>(cx);
2645 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2646 for selection in &mut selections {
2647 if selection.is_empty() {
2648 let head = selection.head().to_display_point(&display_map);
2649 let cursor = movement::left(&display_map, head)
2650 .unwrap()
2651 .to_point(&display_map);
2652 selection.set_head(cursor);
2653 selection.goal = SelectionGoal::None;
2654 }
2655 }
2656 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2657 self.insert("", cx);
2658 self.end_transaction(cx);
2659 }
2660
2661 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
2662 self.start_transaction(cx);
2663 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2664 let mut selections = self.local_selections::<Point>(cx);
2665 for selection in &mut selections {
2666 if selection.is_empty() {
2667 let head = selection.head().to_display_point(&display_map);
2668 let cursor = movement::right(&display_map, head)
2669 .unwrap()
2670 .to_point(&display_map);
2671 selection.set_head(cursor);
2672 selection.goal = SelectionGoal::None;
2673 }
2674 }
2675 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2676 self.insert(&"", cx);
2677 self.end_transaction(cx);
2678 }
2679
2680 pub fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
2681 if self.move_to_next_snippet_tabstop(cx) {
2682 return;
2683 }
2684
2685 self.start_transaction(cx);
2686 let tab_size = self.settings.borrow().tab_size;
2687 let mut selections = self.local_selections::<Point>(cx);
2688 let mut last_indent = None;
2689 self.buffer.update(cx, |buffer, cx| {
2690 for selection in &mut selections {
2691 if selection.is_empty() {
2692 let char_column = buffer
2693 .read(cx)
2694 .text_for_range(Point::new(selection.start.row, 0)..selection.start)
2695 .flat_map(str::chars)
2696 .count();
2697 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
2698 buffer.edit(
2699 [selection.start..selection.start],
2700 " ".repeat(chars_to_next_tab_stop),
2701 cx,
2702 );
2703 selection.start.column += chars_to_next_tab_stop as u32;
2704 selection.end = selection.start;
2705 } else {
2706 let mut start_row = selection.start.row;
2707 let mut end_row = selection.end.row + 1;
2708
2709 // If a selection ends at the beginning of a line, don't indent
2710 // that last line.
2711 if selection.end.column == 0 {
2712 end_row -= 1;
2713 }
2714
2715 // Avoid re-indenting a row that has already been indented by a
2716 // previous selection, but still update this selection's column
2717 // to reflect that indentation.
2718 if let Some((last_indent_row, last_indent_len)) = last_indent {
2719 if last_indent_row == selection.start.row {
2720 selection.start.column += last_indent_len;
2721 start_row += 1;
2722 }
2723 if last_indent_row == selection.end.row {
2724 selection.end.column += last_indent_len;
2725 }
2726 }
2727
2728 for row in start_row..end_row {
2729 let indent_column = buffer.read(cx).indent_column_for_line(row) as usize;
2730 let columns_to_next_tab_stop = tab_size - (indent_column % tab_size);
2731 let row_start = Point::new(row, 0);
2732 buffer.edit(
2733 [row_start..row_start],
2734 " ".repeat(columns_to_next_tab_stop),
2735 cx,
2736 );
2737
2738 // Update this selection's endpoints to reflect the indentation.
2739 if row == selection.start.row {
2740 selection.start.column += columns_to_next_tab_stop as u32;
2741 }
2742 if row == selection.end.row {
2743 selection.end.column += columns_to_next_tab_stop as u32;
2744 }
2745
2746 last_indent = Some((row, columns_to_next_tab_stop as u32));
2747 }
2748 }
2749 }
2750 });
2751
2752 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2753 self.end_transaction(cx);
2754 }
2755
2756 pub fn outdent(&mut self, _: &Outdent, cx: &mut ViewContext<Self>) {
2757 if !self.snippet_stack.is_empty() {
2758 self.move_to_prev_snippet_tabstop(cx);
2759 return;
2760 }
2761
2762 self.start_transaction(cx);
2763 let tab_size = self.settings.borrow().tab_size;
2764 let selections = self.local_selections::<Point>(cx);
2765 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2766 let mut deletion_ranges = Vec::new();
2767 let mut last_outdent = None;
2768 {
2769 let buffer = self.buffer.read(cx).read(cx);
2770 for selection in &selections {
2771 let mut rows = selection.spanned_rows(false, &display_map);
2772
2773 // Avoid re-outdenting a row that has already been outdented by a
2774 // previous selection.
2775 if let Some(last_row) = last_outdent {
2776 if last_row == rows.start {
2777 rows.start += 1;
2778 }
2779 }
2780
2781 for row in rows {
2782 let column = buffer.indent_column_for_line(row) as usize;
2783 if column > 0 {
2784 let mut deletion_len = (column % tab_size) as u32;
2785 if deletion_len == 0 {
2786 deletion_len = tab_size as u32;
2787 }
2788 deletion_ranges.push(Point::new(row, 0)..Point::new(row, deletion_len));
2789 last_outdent = Some(row);
2790 }
2791 }
2792 }
2793 }
2794 self.buffer.update(cx, |buffer, cx| {
2795 buffer.edit(deletion_ranges, "", cx);
2796 });
2797
2798 self.update_selections(
2799 self.local_selections::<usize>(cx),
2800 Some(Autoscroll::Fit),
2801 cx,
2802 );
2803 self.end_transaction(cx);
2804 }
2805
2806 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
2807 self.start_transaction(cx);
2808
2809 let selections = self.local_selections::<Point>(cx);
2810 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2811 let buffer = self.buffer.read(cx).snapshot(cx);
2812
2813 let mut new_cursors = Vec::new();
2814 let mut edit_ranges = Vec::new();
2815 let mut selections = selections.iter().peekable();
2816 while let Some(selection) = selections.next() {
2817 let mut rows = selection.spanned_rows(false, &display_map);
2818 let goal_display_column = selection.head().to_display_point(&display_map).column();
2819
2820 // Accumulate contiguous regions of rows that we want to delete.
2821 while let Some(next_selection) = selections.peek() {
2822 let next_rows = next_selection.spanned_rows(false, &display_map);
2823 if next_rows.start <= rows.end {
2824 rows.end = next_rows.end;
2825 selections.next().unwrap();
2826 } else {
2827 break;
2828 }
2829 }
2830
2831 let mut edit_start = Point::new(rows.start, 0).to_offset(&buffer);
2832 let edit_end;
2833 let cursor_buffer_row;
2834 if buffer.max_point().row >= rows.end {
2835 // If there's a line after the range, delete the \n from the end of the row range
2836 // and position the cursor on the next line.
2837 edit_end = Point::new(rows.end, 0).to_offset(&buffer);
2838 cursor_buffer_row = rows.end;
2839 } else {
2840 // If there isn't a line after the range, delete the \n from the line before the
2841 // start of the row range and position the cursor there.
2842 edit_start = edit_start.saturating_sub(1);
2843 edit_end = buffer.len();
2844 cursor_buffer_row = rows.start.saturating_sub(1);
2845 }
2846
2847 let mut cursor = Point::new(cursor_buffer_row, 0).to_display_point(&display_map);
2848 *cursor.column_mut() =
2849 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
2850
2851 new_cursors.push((
2852 selection.id,
2853 buffer.anchor_after(cursor.to_point(&display_map)),
2854 ));
2855 edit_ranges.push(edit_start..edit_end);
2856 }
2857
2858 let buffer = self.buffer.update(cx, |buffer, cx| {
2859 buffer.edit(edit_ranges, "", cx);
2860 buffer.snapshot(cx)
2861 });
2862 let new_selections = new_cursors
2863 .into_iter()
2864 .map(|(id, cursor)| {
2865 let cursor = cursor.to_point(&buffer);
2866 Selection {
2867 id,
2868 start: cursor,
2869 end: cursor,
2870 reversed: false,
2871 goal: SelectionGoal::None,
2872 }
2873 })
2874 .collect();
2875 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2876 self.end_transaction(cx);
2877 }
2878
2879 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
2880 self.start_transaction(cx);
2881
2882 let selections = self.local_selections::<Point>(cx);
2883 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2884 let buffer = &display_map.buffer_snapshot;
2885
2886 let mut edits = Vec::new();
2887 let mut selections_iter = selections.iter().peekable();
2888 while let Some(selection) = selections_iter.next() {
2889 // Avoid duplicating the same lines twice.
2890 let mut rows = selection.spanned_rows(false, &display_map);
2891
2892 while let Some(next_selection) = selections_iter.peek() {
2893 let next_rows = next_selection.spanned_rows(false, &display_map);
2894 if next_rows.start <= rows.end - 1 {
2895 rows.end = next_rows.end;
2896 selections_iter.next().unwrap();
2897 } else {
2898 break;
2899 }
2900 }
2901
2902 // Copy the text from the selected row region and splice it at the start of the region.
2903 let start = Point::new(rows.start, 0);
2904 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
2905 let text = buffer
2906 .text_for_range(start..end)
2907 .chain(Some("\n"))
2908 .collect::<String>();
2909 edits.push((start, text, rows.len() as u32));
2910 }
2911
2912 self.buffer.update(cx, |buffer, cx| {
2913 for (point, text, _) in edits.into_iter().rev() {
2914 buffer.edit(Some(point..point), text, cx);
2915 }
2916 });
2917
2918 self.request_autoscroll(Autoscroll::Fit, cx);
2919 self.end_transaction(cx);
2920 }
2921
2922 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
2923 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2924 let buffer = self.buffer.read(cx).snapshot(cx);
2925
2926 let mut edits = Vec::new();
2927 let mut unfold_ranges = Vec::new();
2928 let mut refold_ranges = Vec::new();
2929
2930 let selections = self.local_selections::<Point>(cx);
2931 let mut selections = selections.iter().peekable();
2932 let mut contiguous_row_selections = Vec::new();
2933 let mut new_selections = Vec::new();
2934
2935 while let Some(selection) = selections.next() {
2936 // Find all the selections that span a contiguous row range
2937 contiguous_row_selections.push(selection.clone());
2938 let start_row = selection.start.row;
2939 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
2940 display_map.next_line_boundary(selection.end).0.row + 1
2941 } else {
2942 selection.end.row
2943 };
2944
2945 while let Some(next_selection) = selections.peek() {
2946 if next_selection.start.row <= end_row {
2947 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
2948 display_map.next_line_boundary(next_selection.end).0.row + 1
2949 } else {
2950 next_selection.end.row
2951 };
2952 contiguous_row_selections.push(selections.next().unwrap().clone());
2953 } else {
2954 break;
2955 }
2956 }
2957
2958 // Move the text spanned by the row range to be before the line preceding the row range
2959 if start_row > 0 {
2960 let range_to_move = Point::new(start_row - 1, buffer.line_len(start_row - 1))
2961 ..Point::new(end_row - 1, buffer.line_len(end_row - 1));
2962 let insertion_point = display_map
2963 .prev_line_boundary(Point::new(start_row - 1, 0))
2964 .0;
2965
2966 // Don't move lines across excerpts
2967 if buffer
2968 .excerpt_boundaries_in_range((
2969 Bound::Excluded(insertion_point),
2970 Bound::Included(range_to_move.end),
2971 ))
2972 .next()
2973 .is_none()
2974 {
2975 let text = buffer
2976 .text_for_range(range_to_move.clone())
2977 .flat_map(|s| s.chars())
2978 .skip(1)
2979 .chain(['\n'])
2980 .collect::<String>();
2981
2982 edits.push((
2983 buffer.anchor_after(range_to_move.start)
2984 ..buffer.anchor_before(range_to_move.end),
2985 String::new(),
2986 ));
2987 let insertion_anchor = buffer.anchor_after(insertion_point);
2988 edits.push((insertion_anchor.clone()..insertion_anchor, text));
2989
2990 let row_delta = range_to_move.start.row - insertion_point.row + 1;
2991
2992 // Move selections up
2993 new_selections.extend(contiguous_row_selections.drain(..).map(
2994 |mut selection| {
2995 selection.start.row -= row_delta;
2996 selection.end.row -= row_delta;
2997 selection
2998 },
2999 ));
3000
3001 // Move folds up
3002 unfold_ranges.push(range_to_move.clone());
3003 for fold in display_map.folds_in_range(
3004 buffer.anchor_before(range_to_move.start)
3005 ..buffer.anchor_after(range_to_move.end),
3006 ) {
3007 let mut start = fold.start.to_point(&buffer);
3008 let mut end = fold.end.to_point(&buffer);
3009 start.row -= row_delta;
3010 end.row -= row_delta;
3011 refold_ranges.push(start..end);
3012 }
3013 }
3014 }
3015
3016 // If we didn't move line(s), preserve the existing selections
3017 new_selections.extend(contiguous_row_selections.drain(..));
3018 }
3019
3020 self.start_transaction(cx);
3021 self.unfold_ranges(unfold_ranges, cx);
3022 self.buffer.update(cx, |buffer, cx| {
3023 for (range, text) in edits {
3024 buffer.edit([range], text, cx);
3025 }
3026 });
3027 self.fold_ranges(refold_ranges, cx);
3028 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3029 self.end_transaction(cx);
3030 }
3031
3032 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
3033 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3034 let buffer = self.buffer.read(cx).snapshot(cx);
3035
3036 let mut edits = Vec::new();
3037 let mut unfold_ranges = Vec::new();
3038 let mut refold_ranges = Vec::new();
3039
3040 let selections = self.local_selections::<Point>(cx);
3041 let mut selections = selections.iter().peekable();
3042 let mut contiguous_row_selections = Vec::new();
3043 let mut new_selections = Vec::new();
3044
3045 while let Some(selection) = selections.next() {
3046 // Find all the selections that span a contiguous row range
3047 contiguous_row_selections.push(selection.clone());
3048 let start_row = selection.start.row;
3049 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
3050 display_map.next_line_boundary(selection.end).0.row + 1
3051 } else {
3052 selection.end.row
3053 };
3054
3055 while let Some(next_selection) = selections.peek() {
3056 if next_selection.start.row <= end_row {
3057 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
3058 display_map.next_line_boundary(next_selection.end).0.row + 1
3059 } else {
3060 next_selection.end.row
3061 };
3062 contiguous_row_selections.push(selections.next().unwrap().clone());
3063 } else {
3064 break;
3065 }
3066 }
3067
3068 // Move the text spanned by the row range to be after the last line of the row range
3069 if end_row <= buffer.max_point().row {
3070 let range_to_move = Point::new(start_row, 0)..Point::new(end_row, 0);
3071 let insertion_point = display_map.next_line_boundary(Point::new(end_row, 0)).0;
3072
3073 // Don't move lines across excerpt boundaries
3074 if buffer
3075 .excerpt_boundaries_in_range((
3076 Bound::Excluded(range_to_move.start),
3077 Bound::Included(insertion_point),
3078 ))
3079 .next()
3080 .is_none()
3081 {
3082 let mut text = String::from("\n");
3083 text.extend(buffer.text_for_range(range_to_move.clone()));
3084 text.pop(); // Drop trailing newline
3085 edits.push((
3086 buffer.anchor_after(range_to_move.start)
3087 ..buffer.anchor_before(range_to_move.end),
3088 String::new(),
3089 ));
3090 let insertion_anchor = buffer.anchor_after(insertion_point);
3091 edits.push((insertion_anchor.clone()..insertion_anchor, text));
3092
3093 let row_delta = insertion_point.row - range_to_move.end.row + 1;
3094
3095 // Move selections down
3096 new_selections.extend(contiguous_row_selections.drain(..).map(
3097 |mut selection| {
3098 selection.start.row += row_delta;
3099 selection.end.row += row_delta;
3100 selection
3101 },
3102 ));
3103
3104 // Move folds down
3105 unfold_ranges.push(range_to_move.clone());
3106 for fold in display_map.folds_in_range(
3107 buffer.anchor_before(range_to_move.start)
3108 ..buffer.anchor_after(range_to_move.end),
3109 ) {
3110 let mut start = fold.start.to_point(&buffer);
3111 let mut end = fold.end.to_point(&buffer);
3112 start.row += row_delta;
3113 end.row += row_delta;
3114 refold_ranges.push(start..end);
3115 }
3116 }
3117 }
3118
3119 // If we didn't move line(s), preserve the existing selections
3120 new_selections.extend(contiguous_row_selections.drain(..));
3121 }
3122
3123 self.start_transaction(cx);
3124 self.unfold_ranges(unfold_ranges, cx);
3125 self.buffer.update(cx, |buffer, cx| {
3126 for (range, text) in edits {
3127 buffer.edit([range], text, cx);
3128 }
3129 });
3130 self.fold_ranges(refold_ranges, cx);
3131 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3132 self.end_transaction(cx);
3133 }
3134
3135 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
3136 self.start_transaction(cx);
3137 let mut text = String::new();
3138 let mut selections = self.local_selections::<Point>(cx);
3139 let mut clipboard_selections = Vec::with_capacity(selections.len());
3140 {
3141 let buffer = self.buffer.read(cx).read(cx);
3142 let max_point = buffer.max_point();
3143 for selection in &mut selections {
3144 let is_entire_line = selection.is_empty();
3145 if is_entire_line {
3146 selection.start = Point::new(selection.start.row, 0);
3147 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
3148 selection.goal = SelectionGoal::None;
3149 }
3150 let mut len = 0;
3151 for chunk in buffer.text_for_range(selection.start..selection.end) {
3152 text.push_str(chunk);
3153 len += chunk.len();
3154 }
3155 clipboard_selections.push(ClipboardSelection {
3156 len,
3157 is_entire_line,
3158 });
3159 }
3160 }
3161 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3162 self.insert("", cx);
3163 self.end_transaction(cx);
3164
3165 cx.as_mut()
3166 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
3167 }
3168
3169 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
3170 let selections = self.local_selections::<Point>(cx);
3171 let mut text = String::new();
3172 let mut clipboard_selections = Vec::with_capacity(selections.len());
3173 {
3174 let buffer = self.buffer.read(cx).read(cx);
3175 let max_point = buffer.max_point();
3176 for selection in selections.iter() {
3177 let mut start = selection.start;
3178 let mut end = selection.end;
3179 let is_entire_line = selection.is_empty();
3180 if is_entire_line {
3181 start = Point::new(start.row, 0);
3182 end = cmp::min(max_point, Point::new(start.row + 1, 0));
3183 }
3184 let mut len = 0;
3185 for chunk in buffer.text_for_range(start..end) {
3186 text.push_str(chunk);
3187 len += chunk.len();
3188 }
3189 clipboard_selections.push(ClipboardSelection {
3190 len,
3191 is_entire_line,
3192 });
3193 }
3194 }
3195
3196 cx.as_mut()
3197 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
3198 }
3199
3200 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
3201 if let Some(item) = cx.as_mut().read_from_clipboard() {
3202 let clipboard_text = item.text();
3203 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
3204 let mut selections = self.local_selections::<usize>(cx);
3205 let all_selections_were_entire_line =
3206 clipboard_selections.iter().all(|s| s.is_entire_line);
3207 if clipboard_selections.len() != selections.len() {
3208 clipboard_selections.clear();
3209 }
3210
3211 let mut delta = 0_isize;
3212 let mut start_offset = 0;
3213 for (i, selection) in selections.iter_mut().enumerate() {
3214 let to_insert;
3215 let entire_line;
3216 if let Some(clipboard_selection) = clipboard_selections.get(i) {
3217 let end_offset = start_offset + clipboard_selection.len;
3218 to_insert = &clipboard_text[start_offset..end_offset];
3219 entire_line = clipboard_selection.is_entire_line;
3220 start_offset = end_offset
3221 } else {
3222 to_insert = clipboard_text.as_str();
3223 entire_line = all_selections_were_entire_line;
3224 }
3225
3226 selection.start = (selection.start as isize + delta) as usize;
3227 selection.end = (selection.end as isize + delta) as usize;
3228
3229 self.buffer.update(cx, |buffer, cx| {
3230 // If the corresponding selection was empty when this slice of the
3231 // clipboard text was written, then the entire line containing the
3232 // selection was copied. If this selection is also currently empty,
3233 // then paste the line before the current line of the buffer.
3234 let range = if selection.is_empty() && entire_line {
3235 let column = selection.start.to_point(&buffer.read(cx)).column as usize;
3236 let line_start = selection.start - column;
3237 line_start..line_start
3238 } else {
3239 selection.start..selection.end
3240 };
3241
3242 delta += to_insert.len() as isize - range.len() as isize;
3243 buffer.edit([range], to_insert, cx);
3244 selection.start += to_insert.len();
3245 selection.end = selection.start;
3246 });
3247 }
3248 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3249 } else {
3250 self.insert(clipboard_text, cx);
3251 }
3252 }
3253 }
3254
3255 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
3256 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
3257 if let Some((selections, _)) = self.selection_history.get(&tx_id).cloned() {
3258 self.set_selections(selections, None, cx);
3259 }
3260 self.request_autoscroll(Autoscroll::Fit, cx);
3261 }
3262 }
3263
3264 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
3265 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
3266 if let Some((_, Some(selections))) = self.selection_history.get(&tx_id).cloned() {
3267 self.set_selections(selections, None, cx);
3268 }
3269 self.request_autoscroll(Autoscroll::Fit, cx);
3270 }
3271 }
3272
3273 pub fn finalize_last_transaction(&mut self, cx: &mut ViewContext<Self>) {
3274 self.buffer
3275 .update(cx, |buffer, cx| buffer.finalize_last_transaction(cx));
3276 }
3277
3278 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
3279 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3280 let mut selections = self.local_selections::<Point>(cx);
3281 for selection in &mut selections {
3282 let start = selection.start.to_display_point(&display_map);
3283 let end = selection.end.to_display_point(&display_map);
3284
3285 if start != end {
3286 selection.end = selection.start.clone();
3287 } else {
3288 let cursor = movement::left(&display_map, start)
3289 .unwrap()
3290 .to_point(&display_map);
3291 selection.start = cursor.clone();
3292 selection.end = cursor;
3293 }
3294 selection.reversed = false;
3295 selection.goal = SelectionGoal::None;
3296 }
3297 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3298 }
3299
3300 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
3301 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3302 let mut selections = self.local_selections::<Point>(cx);
3303 for selection in &mut selections {
3304 let head = selection.head().to_display_point(&display_map);
3305 let cursor = movement::left(&display_map, head)
3306 .unwrap()
3307 .to_point(&display_map);
3308 selection.set_head(cursor);
3309 selection.goal = SelectionGoal::None;
3310 }
3311 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3312 }
3313
3314 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
3315 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3316 let mut selections = self.local_selections::<Point>(cx);
3317 for selection in &mut selections {
3318 let start = selection.start.to_display_point(&display_map);
3319 let end = selection.end.to_display_point(&display_map);
3320
3321 if start != end {
3322 selection.start = selection.end.clone();
3323 } else {
3324 let cursor = movement::right(&display_map, end)
3325 .unwrap()
3326 .to_point(&display_map);
3327 selection.start = cursor;
3328 selection.end = cursor;
3329 }
3330 selection.reversed = false;
3331 selection.goal = SelectionGoal::None;
3332 }
3333 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3334 }
3335
3336 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
3337 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3338 let mut selections = self.local_selections::<Point>(cx);
3339 for selection in &mut selections {
3340 let head = selection.head().to_display_point(&display_map);
3341 let cursor = movement::right(&display_map, head)
3342 .unwrap()
3343 .to_point(&display_map);
3344 selection.set_head(cursor);
3345 selection.goal = SelectionGoal::None;
3346 }
3347 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3348 }
3349
3350 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
3351 if self.take_rename(cx).is_some() {
3352 return;
3353 }
3354
3355 if let Some(context_menu) = self.context_menu.as_mut() {
3356 if context_menu.select_prev(cx) {
3357 return;
3358 }
3359 }
3360
3361 if matches!(self.mode, EditorMode::SingleLine) {
3362 cx.propagate_action();
3363 return;
3364 }
3365
3366 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3367 let mut selections = self.local_selections::<Point>(cx);
3368 for selection in &mut selections {
3369 let start = selection.start.to_display_point(&display_map);
3370 let end = selection.end.to_display_point(&display_map);
3371 if start != end {
3372 selection.goal = SelectionGoal::None;
3373 }
3374
3375 let (start, goal) = movement::up(&display_map, start, selection.goal).unwrap();
3376 let cursor = start.to_point(&display_map);
3377 selection.start = cursor;
3378 selection.end = cursor;
3379 selection.goal = goal;
3380 selection.reversed = false;
3381 }
3382 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3383 }
3384
3385 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
3386 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3387 let mut selections = self.local_selections::<Point>(cx);
3388 for selection in &mut selections {
3389 let head = selection.head().to_display_point(&display_map);
3390 let (head, goal) = movement::up(&display_map, head, selection.goal).unwrap();
3391 let cursor = head.to_point(&display_map);
3392 selection.set_head(cursor);
3393 selection.goal = goal;
3394 }
3395 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3396 }
3397
3398 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
3399 self.take_rename(cx);
3400
3401 if let Some(context_menu) = self.context_menu.as_mut() {
3402 if context_menu.select_next(cx) {
3403 return;
3404 }
3405 }
3406
3407 if matches!(self.mode, EditorMode::SingleLine) {
3408 cx.propagate_action();
3409 return;
3410 }
3411
3412 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3413 let mut selections = self.local_selections::<Point>(cx);
3414 for selection in &mut selections {
3415 let start = selection.start.to_display_point(&display_map);
3416 let end = selection.end.to_display_point(&display_map);
3417 if start != end {
3418 selection.goal = SelectionGoal::None;
3419 }
3420
3421 let (start, goal) = movement::down(&display_map, end, selection.goal).unwrap();
3422 let cursor = start.to_point(&display_map);
3423 selection.start = cursor;
3424 selection.end = cursor;
3425 selection.goal = goal;
3426 selection.reversed = false;
3427 }
3428 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3429 }
3430
3431 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
3432 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3433 let mut selections = self.local_selections::<Point>(cx);
3434 for selection in &mut selections {
3435 let head = selection.head().to_display_point(&display_map);
3436 let (head, goal) = movement::down(&display_map, head, selection.goal).unwrap();
3437 let cursor = head.to_point(&display_map);
3438 selection.set_head(cursor);
3439 selection.goal = goal;
3440 }
3441 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3442 }
3443
3444 pub fn move_to_previous_word_boundary(
3445 &mut self,
3446 _: &MoveToPreviousWordBoundary,
3447 cx: &mut ViewContext<Self>,
3448 ) {
3449 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3450 let mut selections = self.local_selections::<Point>(cx);
3451 for selection in &mut selections {
3452 let head = selection.head().to_display_point(&display_map);
3453 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3454 selection.start = cursor.clone();
3455 selection.end = cursor;
3456 selection.reversed = false;
3457 selection.goal = SelectionGoal::None;
3458 }
3459 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3460 }
3461
3462 pub fn select_to_previous_word_boundary(
3463 &mut self,
3464 _: &SelectToPreviousWordBoundary,
3465 cx: &mut ViewContext<Self>,
3466 ) {
3467 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3468 let mut selections = self.local_selections::<Point>(cx);
3469 for selection in &mut selections {
3470 let head = selection.head().to_display_point(&display_map);
3471 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3472 selection.set_head(cursor);
3473 selection.goal = SelectionGoal::None;
3474 }
3475 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3476 }
3477
3478 pub fn delete_to_previous_word_boundary(
3479 &mut self,
3480 _: &DeleteToPreviousWordBoundary,
3481 cx: &mut ViewContext<Self>,
3482 ) {
3483 self.start_transaction(cx);
3484 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3485 let mut selections = self.local_selections::<Point>(cx);
3486 for selection in &mut selections {
3487 if selection.is_empty() {
3488 let head = selection.head().to_display_point(&display_map);
3489 let cursor =
3490 movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3491 selection.set_head(cursor);
3492 selection.goal = SelectionGoal::None;
3493 }
3494 }
3495 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3496 self.insert("", cx);
3497 self.end_transaction(cx);
3498 }
3499
3500 pub fn move_to_next_word_boundary(
3501 &mut self,
3502 _: &MoveToNextWordBoundary,
3503 cx: &mut ViewContext<Self>,
3504 ) {
3505 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3506 let mut selections = self.local_selections::<Point>(cx);
3507 for selection in &mut selections {
3508 let head = selection.head().to_display_point(&display_map);
3509 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
3510 selection.start = cursor;
3511 selection.end = cursor;
3512 selection.reversed = false;
3513 selection.goal = SelectionGoal::None;
3514 }
3515 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3516 }
3517
3518 pub fn select_to_next_word_boundary(
3519 &mut self,
3520 _: &SelectToNextWordBoundary,
3521 cx: &mut ViewContext<Self>,
3522 ) {
3523 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3524 let mut selections = self.local_selections::<Point>(cx);
3525 for selection in &mut selections {
3526 let head = selection.head().to_display_point(&display_map);
3527 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
3528 selection.set_head(cursor);
3529 selection.goal = SelectionGoal::None;
3530 }
3531 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3532 }
3533
3534 pub fn delete_to_next_word_boundary(
3535 &mut self,
3536 _: &DeleteToNextWordBoundary,
3537 cx: &mut ViewContext<Self>,
3538 ) {
3539 self.start_transaction(cx);
3540 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3541 let mut selections = self.local_selections::<Point>(cx);
3542 for selection in &mut selections {
3543 if selection.is_empty() {
3544 let head = selection.head().to_display_point(&display_map);
3545 let cursor =
3546 movement::next_word_boundary(&display_map, head).to_point(&display_map);
3547 selection.set_head(cursor);
3548 selection.goal = SelectionGoal::None;
3549 }
3550 }
3551 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3552 self.insert("", cx);
3553 self.end_transaction(cx);
3554 }
3555
3556 pub fn move_to_beginning_of_line(
3557 &mut self,
3558 _: &MoveToBeginningOfLine,
3559 cx: &mut ViewContext<Self>,
3560 ) {
3561 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3562 let mut selections = self.local_selections::<Point>(cx);
3563 for selection in &mut selections {
3564 let head = selection.head().to_display_point(&display_map);
3565 let new_head = movement::line_beginning(&display_map, head, true);
3566 let cursor = new_head.to_point(&display_map);
3567 selection.start = cursor;
3568 selection.end = cursor;
3569 selection.reversed = false;
3570 selection.goal = SelectionGoal::None;
3571 }
3572 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3573 }
3574
3575 pub fn select_to_beginning_of_line(
3576 &mut self,
3577 SelectToBeginningOfLine(stop_at_soft_boundaries): &SelectToBeginningOfLine,
3578 cx: &mut ViewContext<Self>,
3579 ) {
3580 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3581 let mut selections = self.local_selections::<Point>(cx);
3582 for selection in &mut selections {
3583 let head = selection.head().to_display_point(&display_map);
3584 let new_head = movement::line_beginning(&display_map, head, *stop_at_soft_boundaries);
3585 selection.set_head(new_head.to_point(&display_map));
3586 selection.goal = SelectionGoal::None;
3587 }
3588 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3589 }
3590
3591 pub fn delete_to_beginning_of_line(
3592 &mut self,
3593 _: &DeleteToBeginningOfLine,
3594 cx: &mut ViewContext<Self>,
3595 ) {
3596 self.start_transaction(cx);
3597 self.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
3598 self.backspace(&Backspace, cx);
3599 self.end_transaction(cx);
3600 }
3601
3602 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
3603 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3604 let mut selections = self.local_selections::<Point>(cx);
3605 {
3606 for selection in &mut selections {
3607 let head = selection.head().to_display_point(&display_map);
3608 let new_head = movement::line_end(&display_map, head, true);
3609 let anchor = new_head.to_point(&display_map);
3610 selection.start = anchor.clone();
3611 selection.end = anchor;
3612 selection.reversed = false;
3613 selection.goal = SelectionGoal::None;
3614 }
3615 }
3616 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3617 }
3618
3619 pub fn select_to_end_of_line(
3620 &mut self,
3621 SelectToEndOfLine(stop_at_soft_boundaries): &SelectToEndOfLine,
3622 cx: &mut ViewContext<Self>,
3623 ) {
3624 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3625 let mut selections = self.local_selections::<Point>(cx);
3626 for selection in &mut selections {
3627 let head = selection.head().to_display_point(&display_map);
3628 let new_head = movement::line_end(&display_map, head, *stop_at_soft_boundaries);
3629 selection.set_head(new_head.to_point(&display_map));
3630 selection.goal = SelectionGoal::None;
3631 }
3632 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3633 }
3634
3635 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
3636 self.start_transaction(cx);
3637 self.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3638 self.delete(&Delete, cx);
3639 self.end_transaction(cx);
3640 }
3641
3642 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
3643 self.start_transaction(cx);
3644 self.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3645 self.cut(&Cut, cx);
3646 self.end_transaction(cx);
3647 }
3648
3649 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
3650 if matches!(self.mode, EditorMode::SingleLine) {
3651 cx.propagate_action();
3652 return;
3653 }
3654
3655 let selection = Selection {
3656 id: post_inc(&mut self.next_selection_id),
3657 start: 0,
3658 end: 0,
3659 reversed: false,
3660 goal: SelectionGoal::None,
3661 };
3662 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3663 }
3664
3665 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
3666 let mut selection = self.local_selections::<Point>(cx).last().unwrap().clone();
3667 selection.set_head(Point::zero());
3668 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3669 }
3670
3671 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
3672 if matches!(self.mode, EditorMode::SingleLine) {
3673 cx.propagate_action();
3674 return;
3675 }
3676
3677 let cursor = self.buffer.read(cx).read(cx).len();
3678 let selection = Selection {
3679 id: post_inc(&mut self.next_selection_id),
3680 start: cursor,
3681 end: cursor,
3682 reversed: false,
3683 goal: SelectionGoal::None,
3684 };
3685 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3686 }
3687
3688 pub fn set_nav_history(&mut self, nav_history: Option<ItemNavHistory>) {
3689 self.nav_history = nav_history;
3690 }
3691
3692 pub fn nav_history(&self) -> Option<&ItemNavHistory> {
3693 self.nav_history.as_ref()
3694 }
3695
3696 fn push_to_nav_history(
3697 &self,
3698 position: Anchor,
3699 new_position: Option<Point>,
3700 cx: &mut ViewContext<Self>,
3701 ) {
3702 if let Some(nav_history) = &self.nav_history {
3703 let buffer = self.buffer.read(cx).read(cx);
3704 let offset = position.to_offset(&buffer);
3705 let point = position.to_point(&buffer);
3706 drop(buffer);
3707
3708 if let Some(new_position) = new_position {
3709 let row_delta = (new_position.row as i64 - point.row as i64).abs();
3710 if row_delta < MIN_NAVIGATION_HISTORY_ROW_DELTA {
3711 return;
3712 }
3713 }
3714
3715 nav_history.push(Some(NavigationData {
3716 anchor: position,
3717 offset,
3718 }));
3719 }
3720 }
3721
3722 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
3723 let mut selection = self.local_selections::<usize>(cx).first().unwrap().clone();
3724 selection.set_head(self.buffer.read(cx).read(cx).len());
3725 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3726 }
3727
3728 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
3729 let selection = Selection {
3730 id: post_inc(&mut self.next_selection_id),
3731 start: 0,
3732 end: self.buffer.read(cx).read(cx).len(),
3733 reversed: false,
3734 goal: SelectionGoal::None,
3735 };
3736 self.update_selections(vec![selection], None, cx);
3737 }
3738
3739 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
3740 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3741 let mut selections = self.local_selections::<Point>(cx);
3742 let max_point = display_map.buffer_snapshot.max_point();
3743 for selection in &mut selections {
3744 let rows = selection.spanned_rows(true, &display_map);
3745 selection.start = Point::new(rows.start, 0);
3746 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
3747 selection.reversed = false;
3748 }
3749 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3750 }
3751
3752 pub fn split_selection_into_lines(
3753 &mut self,
3754 _: &SplitSelectionIntoLines,
3755 cx: &mut ViewContext<Self>,
3756 ) {
3757 let mut to_unfold = Vec::new();
3758 let mut new_selections = Vec::new();
3759 {
3760 let selections = self.local_selections::<Point>(cx);
3761 let buffer = self.buffer.read(cx).read(cx);
3762 for selection in selections {
3763 for row in selection.start.row..selection.end.row {
3764 let cursor = Point::new(row, buffer.line_len(row));
3765 new_selections.push(Selection {
3766 id: post_inc(&mut self.next_selection_id),
3767 start: cursor,
3768 end: cursor,
3769 reversed: false,
3770 goal: SelectionGoal::None,
3771 });
3772 }
3773 new_selections.push(Selection {
3774 id: selection.id,
3775 start: selection.end,
3776 end: selection.end,
3777 reversed: false,
3778 goal: SelectionGoal::None,
3779 });
3780 to_unfold.push(selection.start..selection.end);
3781 }
3782 }
3783 self.unfold_ranges(to_unfold, cx);
3784 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3785 }
3786
3787 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
3788 self.add_selection(true, cx);
3789 }
3790
3791 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
3792 self.add_selection(false, cx);
3793 }
3794
3795 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
3796 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3797 let mut selections = self.local_selections::<Point>(cx);
3798 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
3799 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
3800 let range = oldest_selection.display_range(&display_map).sorted();
3801 let columns = cmp::min(range.start.column(), range.end.column())
3802 ..cmp::max(range.start.column(), range.end.column());
3803
3804 selections.clear();
3805 let mut stack = Vec::new();
3806 for row in range.start.row()..=range.end.row() {
3807 if let Some(selection) = self.build_columnar_selection(
3808 &display_map,
3809 row,
3810 &columns,
3811 oldest_selection.reversed,
3812 ) {
3813 stack.push(selection.id);
3814 selections.push(selection);
3815 }
3816 }
3817
3818 if above {
3819 stack.reverse();
3820 }
3821
3822 AddSelectionsState { above, stack }
3823 });
3824
3825 let last_added_selection = *state.stack.last().unwrap();
3826 let mut new_selections = Vec::new();
3827 if above == state.above {
3828 let end_row = if above {
3829 0
3830 } else {
3831 display_map.max_point().row()
3832 };
3833
3834 'outer: for selection in selections {
3835 if selection.id == last_added_selection {
3836 let range = selection.display_range(&display_map).sorted();
3837 debug_assert_eq!(range.start.row(), range.end.row());
3838 let mut row = range.start.row();
3839 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
3840 {
3841 start..end
3842 } else {
3843 cmp::min(range.start.column(), range.end.column())
3844 ..cmp::max(range.start.column(), range.end.column())
3845 };
3846
3847 while row != end_row {
3848 if above {
3849 row -= 1;
3850 } else {
3851 row += 1;
3852 }
3853
3854 if let Some(new_selection) = self.build_columnar_selection(
3855 &display_map,
3856 row,
3857 &columns,
3858 selection.reversed,
3859 ) {
3860 state.stack.push(new_selection.id);
3861 if above {
3862 new_selections.push(new_selection);
3863 new_selections.push(selection);
3864 } else {
3865 new_selections.push(selection);
3866 new_selections.push(new_selection);
3867 }
3868
3869 continue 'outer;
3870 }
3871 }
3872 }
3873
3874 new_selections.push(selection);
3875 }
3876 } else {
3877 new_selections = selections;
3878 new_selections.retain(|s| s.id != last_added_selection);
3879 state.stack.pop();
3880 }
3881
3882 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3883 if state.stack.len() > 1 {
3884 self.add_selections_state = Some(state);
3885 }
3886 }
3887
3888 pub fn select_next(&mut self, action: &SelectNext, cx: &mut ViewContext<Self>) {
3889 let replace_newest = action.0;
3890 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3891 let buffer = &display_map.buffer_snapshot;
3892 let mut selections = self.local_selections::<usize>(cx);
3893 if let Some(mut select_next_state) = self.select_next_state.take() {
3894 let query = &select_next_state.query;
3895 if !select_next_state.done {
3896 let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
3897 let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
3898 let mut next_selected_range = None;
3899
3900 let bytes_after_last_selection =
3901 buffer.bytes_in_range(last_selection.end..buffer.len());
3902 let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
3903 let query_matches = query
3904 .stream_find_iter(bytes_after_last_selection)
3905 .map(|result| (last_selection.end, result))
3906 .chain(
3907 query
3908 .stream_find_iter(bytes_before_first_selection)
3909 .map(|result| (0, result)),
3910 );
3911 for (start_offset, query_match) in query_matches {
3912 let query_match = query_match.unwrap(); // can only fail due to I/O
3913 let offset_range =
3914 start_offset + query_match.start()..start_offset + query_match.end();
3915 let display_range = offset_range.start.to_display_point(&display_map)
3916 ..offset_range.end.to_display_point(&display_map);
3917
3918 if !select_next_state.wordwise
3919 || (!movement::is_inside_word(&display_map, display_range.start)
3920 && !movement::is_inside_word(&display_map, display_range.end))
3921 {
3922 next_selected_range = Some(offset_range);
3923 break;
3924 }
3925 }
3926
3927 if let Some(next_selected_range) = next_selected_range {
3928 if replace_newest {
3929 if let Some(newest_id) =
3930 selections.iter().max_by_key(|s| s.id).map(|s| s.id)
3931 {
3932 selections.retain(|s| s.id != newest_id);
3933 }
3934 }
3935 selections.push(Selection {
3936 id: post_inc(&mut self.next_selection_id),
3937 start: next_selected_range.start,
3938 end: next_selected_range.end,
3939 reversed: false,
3940 goal: SelectionGoal::None,
3941 });
3942 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3943 } else {
3944 select_next_state.done = true;
3945 }
3946 }
3947
3948 self.select_next_state = Some(select_next_state);
3949 } else if selections.len() == 1 {
3950 let selection = selections.last_mut().unwrap();
3951 if selection.start == selection.end {
3952 let word_range = movement::surrounding_word(
3953 &display_map,
3954 selection.start.to_display_point(&display_map),
3955 );
3956 selection.start = word_range.start.to_offset(&display_map, Bias::Left);
3957 selection.end = word_range.end.to_offset(&display_map, Bias::Left);
3958 selection.goal = SelectionGoal::None;
3959 selection.reversed = false;
3960
3961 let query = buffer
3962 .text_for_range(selection.start..selection.end)
3963 .collect::<String>();
3964 let select_state = SelectNextState {
3965 query: AhoCorasick::new_auto_configured(&[query]),
3966 wordwise: true,
3967 done: false,
3968 };
3969 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3970 self.select_next_state = Some(select_state);
3971 } else {
3972 let query = buffer
3973 .text_for_range(selection.start..selection.end)
3974 .collect::<String>();
3975 self.select_next_state = Some(SelectNextState {
3976 query: AhoCorasick::new_auto_configured(&[query]),
3977 wordwise: false,
3978 done: false,
3979 });
3980 self.select_next(action, cx);
3981 }
3982 }
3983 }
3984
3985 pub fn toggle_comments(&mut self, _: &ToggleComments, cx: &mut ViewContext<Self>) {
3986 // Get the line comment prefix. Split its trailing whitespace into a separate string,
3987 // as that portion won't be used for detecting if a line is a comment.
3988 let full_comment_prefix =
3989 if let Some(prefix) = self.language(cx).and_then(|l| l.line_comment_prefix()) {
3990 prefix.to_string()
3991 } else {
3992 return;
3993 };
3994 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
3995 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
3996
3997 self.start_transaction(cx);
3998 let mut selections = self.local_selections::<Point>(cx);
3999 let mut all_selection_lines_are_comments = true;
4000 let mut edit_ranges = Vec::new();
4001 let mut last_toggled_row = None;
4002 self.buffer.update(cx, |buffer, cx| {
4003 for selection in &mut selections {
4004 edit_ranges.clear();
4005 let snapshot = buffer.snapshot(cx);
4006
4007 let end_row =
4008 if selection.end.row > selection.start.row && selection.end.column == 0 {
4009 selection.end.row
4010 } else {
4011 selection.end.row + 1
4012 };
4013
4014 for row in selection.start.row..end_row {
4015 // If multiple selections contain a given row, avoid processing that
4016 // row more than once.
4017 if last_toggled_row == Some(row) {
4018 continue;
4019 } else {
4020 last_toggled_row = Some(row);
4021 }
4022
4023 if snapshot.is_line_blank(row) {
4024 continue;
4025 }
4026
4027 let start = Point::new(row, snapshot.indent_column_for_line(row));
4028 let mut line_bytes = snapshot
4029 .bytes_in_range(start..snapshot.max_point())
4030 .flatten()
4031 .copied();
4032
4033 // If this line currently begins with the line comment prefix, then record
4034 // the range containing the prefix.
4035 if all_selection_lines_are_comments
4036 && line_bytes
4037 .by_ref()
4038 .take(comment_prefix.len())
4039 .eq(comment_prefix.bytes())
4040 {
4041 // Include any whitespace that matches the comment prefix.
4042 let matching_whitespace_len = line_bytes
4043 .zip(comment_prefix_whitespace.bytes())
4044 .take_while(|(a, b)| a == b)
4045 .count() as u32;
4046 let end = Point::new(
4047 row,
4048 start.column + comment_prefix.len() as u32 + matching_whitespace_len,
4049 );
4050 edit_ranges.push(start..end);
4051 }
4052 // If this line does not begin with the line comment prefix, then record
4053 // the position where the prefix should be inserted.
4054 else {
4055 all_selection_lines_are_comments = false;
4056 edit_ranges.push(start..start);
4057 }
4058 }
4059
4060 if !edit_ranges.is_empty() {
4061 if all_selection_lines_are_comments {
4062 buffer.edit(edit_ranges.iter().cloned(), "", cx);
4063 } else {
4064 let min_column = edit_ranges.iter().map(|r| r.start.column).min().unwrap();
4065 let edit_ranges = edit_ranges.iter().map(|range| {
4066 let position = Point::new(range.start.row, min_column);
4067 position..position
4068 });
4069 buffer.edit(edit_ranges, &full_comment_prefix, cx);
4070 }
4071 }
4072 }
4073 });
4074
4075 self.update_selections(
4076 self.local_selections::<usize>(cx),
4077 Some(Autoscroll::Fit),
4078 cx,
4079 );
4080 self.end_transaction(cx);
4081 }
4082
4083 pub fn select_larger_syntax_node(
4084 &mut self,
4085 _: &SelectLargerSyntaxNode,
4086 cx: &mut ViewContext<Self>,
4087 ) {
4088 let old_selections = self.local_selections::<usize>(cx).into_boxed_slice();
4089 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4090 let buffer = self.buffer.read(cx).snapshot(cx);
4091
4092 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
4093 let mut selected_larger_node = false;
4094 let new_selections = old_selections
4095 .iter()
4096 .map(|selection| {
4097 let old_range = selection.start..selection.end;
4098 let mut new_range = old_range.clone();
4099 while let Some(containing_range) =
4100 buffer.range_for_syntax_ancestor(new_range.clone())
4101 {
4102 new_range = containing_range;
4103 if !display_map.intersects_fold(new_range.start)
4104 && !display_map.intersects_fold(new_range.end)
4105 {
4106 break;
4107 }
4108 }
4109
4110 selected_larger_node |= new_range != old_range;
4111 Selection {
4112 id: selection.id,
4113 start: new_range.start,
4114 end: new_range.end,
4115 goal: SelectionGoal::None,
4116 reversed: selection.reversed,
4117 }
4118 })
4119 .collect::<Vec<_>>();
4120
4121 if selected_larger_node {
4122 stack.push(old_selections);
4123 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
4124 }
4125 self.select_larger_syntax_node_stack = stack;
4126 }
4127
4128 pub fn select_smaller_syntax_node(
4129 &mut self,
4130 _: &SelectSmallerSyntaxNode,
4131 cx: &mut ViewContext<Self>,
4132 ) {
4133 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
4134 if let Some(selections) = stack.pop() {
4135 self.update_selections(selections.to_vec(), Some(Autoscroll::Fit), cx);
4136 }
4137 self.select_larger_syntax_node_stack = stack;
4138 }
4139
4140 pub fn move_to_enclosing_bracket(
4141 &mut self,
4142 _: &MoveToEnclosingBracket,
4143 cx: &mut ViewContext<Self>,
4144 ) {
4145 let mut selections = self.local_selections::<usize>(cx);
4146 let buffer = self.buffer.read(cx).snapshot(cx);
4147 for selection in &mut selections {
4148 if let Some((open_range, close_range)) =
4149 buffer.enclosing_bracket_ranges(selection.start..selection.end)
4150 {
4151 let close_range = close_range.to_inclusive();
4152 let destination = if close_range.contains(&selection.start)
4153 && close_range.contains(&selection.end)
4154 {
4155 open_range.end
4156 } else {
4157 *close_range.start()
4158 };
4159 selection.start = destination;
4160 selection.end = destination;
4161 }
4162 }
4163
4164 self.update_selections(selections, Some(Autoscroll::Fit), cx);
4165 }
4166
4167 pub fn show_next_diagnostic(&mut self, _: &ShowNextDiagnostic, cx: &mut ViewContext<Self>) {
4168 let buffer = self.buffer.read(cx).snapshot(cx);
4169 let selection = self.newest_selection_with_snapshot::<usize>(&buffer);
4170 let mut active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
4171 active_diagnostics
4172 .primary_range
4173 .to_offset(&buffer)
4174 .to_inclusive()
4175 });
4176 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
4177 if active_primary_range.contains(&selection.head()) {
4178 *active_primary_range.end()
4179 } else {
4180 selection.head()
4181 }
4182 } else {
4183 selection.head()
4184 };
4185
4186 loop {
4187 let next_group = buffer
4188 .diagnostics_in_range::<_, usize>(search_start..buffer.len())
4189 .find_map(|entry| {
4190 if entry.diagnostic.is_primary
4191 && !entry.range.is_empty()
4192 && Some(entry.range.end) != active_primary_range.as_ref().map(|r| *r.end())
4193 {
4194 Some((entry.range, entry.diagnostic.group_id))
4195 } else {
4196 None
4197 }
4198 });
4199
4200 if let Some((primary_range, group_id)) = next_group {
4201 self.activate_diagnostics(group_id, cx);
4202 self.update_selections(
4203 vec![Selection {
4204 id: selection.id,
4205 start: primary_range.start,
4206 end: primary_range.start,
4207 reversed: false,
4208 goal: SelectionGoal::None,
4209 }],
4210 Some(Autoscroll::Center),
4211 cx,
4212 );
4213 break;
4214 } else if search_start == 0 {
4215 break;
4216 } else {
4217 // Cycle around to the start of the buffer, potentially moving back to the start of
4218 // the currently active diagnostic.
4219 search_start = 0;
4220 active_primary_range.take();
4221 }
4222 }
4223 }
4224
4225 pub fn go_to_definition(
4226 workspace: &mut Workspace,
4227 _: &GoToDefinition,
4228 cx: &mut ViewContext<Workspace>,
4229 ) {
4230 let active_item = workspace.active_item(cx);
4231 let editor_handle = if let Some(editor) = active_item
4232 .as_ref()
4233 .and_then(|item| item.act_as::<Self>(cx))
4234 {
4235 editor
4236 } else {
4237 return;
4238 };
4239
4240 let editor = editor_handle.read(cx);
4241 let head = editor.newest_selection::<usize>(cx).head();
4242 let (buffer, head) =
4243 if let Some(text_anchor) = editor.buffer.read(cx).text_anchor_for_position(head, cx) {
4244 text_anchor
4245 } else {
4246 return;
4247 };
4248
4249 let definitions = workspace
4250 .project()
4251 .update(cx, |project, cx| project.definition(&buffer, head, cx));
4252 cx.spawn(|workspace, mut cx| async move {
4253 let definitions = definitions.await?;
4254 workspace.update(&mut cx, |workspace, cx| {
4255 let nav_history = workspace.active_pane().read(cx).nav_history().clone();
4256 for definition in definitions {
4257 let range = definition.range.to_offset(definition.buffer.read(cx));
4258 let target_editor_handle = workspace
4259 .open_item(BufferItemHandle(definition.buffer), cx)
4260 .downcast::<Self>()
4261 .unwrap();
4262
4263 target_editor_handle.update(cx, |target_editor, cx| {
4264 // When selecting a definition in a different buffer, disable the nav history
4265 // to avoid creating a history entry at the previous cursor location.
4266 if editor_handle != target_editor_handle {
4267 nav_history.borrow_mut().disable();
4268 }
4269 target_editor.select_ranges([range], Some(Autoscroll::Center), cx);
4270 nav_history.borrow_mut().enable();
4271 });
4272 }
4273 });
4274
4275 Ok::<(), anyhow::Error>(())
4276 })
4277 .detach_and_log_err(cx);
4278 }
4279
4280 pub fn find_all_references(
4281 workspace: &mut Workspace,
4282 _: &FindAllReferences,
4283 cx: &mut ViewContext<Workspace>,
4284 ) -> Option<Task<Result<()>>> {
4285 let active_item = workspace.active_item(cx)?;
4286 let editor_handle = active_item.act_as::<Self>(cx)?;
4287
4288 let editor = editor_handle.read(cx);
4289 let head = editor.newest_selection::<usize>(cx).head();
4290 let (buffer, head) = editor.buffer.read(cx).text_anchor_for_position(head, cx)?;
4291 let replica_id = editor.replica_id(cx);
4292
4293 let references = workspace
4294 .project()
4295 .update(cx, |project, cx| project.references(&buffer, head, cx));
4296 Some(cx.spawn(|workspace, mut cx| async move {
4297 let mut locations = references.await?;
4298 if locations.is_empty() {
4299 return Ok(());
4300 }
4301
4302 locations.sort_by_key(|location| location.buffer.id());
4303 let mut locations = locations.into_iter().peekable();
4304 let mut ranges_to_highlight = Vec::new();
4305
4306 let excerpt_buffer = cx.add_model(|cx| {
4307 let mut symbol_name = None;
4308 let mut multibuffer = MultiBuffer::new(replica_id);
4309 while let Some(location) = locations.next() {
4310 let buffer = location.buffer.read(cx);
4311 let mut ranges_for_buffer = Vec::new();
4312 let range = location.range.to_offset(buffer);
4313 ranges_for_buffer.push(range.clone());
4314 if symbol_name.is_none() {
4315 symbol_name = Some(buffer.text_for_range(range).collect::<String>());
4316 }
4317
4318 while let Some(next_location) = locations.peek() {
4319 if next_location.buffer == location.buffer {
4320 ranges_for_buffer.push(next_location.range.to_offset(buffer));
4321 locations.next();
4322 } else {
4323 break;
4324 }
4325 }
4326
4327 ranges_for_buffer.sort_by_key(|range| (range.start, Reverse(range.end)));
4328 ranges_to_highlight.extend(multibuffer.push_excerpts_with_context_lines(
4329 location.buffer.clone(),
4330 ranges_for_buffer,
4331 1,
4332 cx,
4333 ));
4334 }
4335 multibuffer.with_title(format!("References to `{}`", symbol_name.unwrap()))
4336 });
4337
4338 workspace.update(&mut cx, |workspace, cx| {
4339 let editor = workspace.open_item(MultiBufferItemHandle(excerpt_buffer), cx);
4340 if let Some(editor) = editor.act_as::<Self>(cx) {
4341 editor.update(cx, |editor, cx| {
4342 let color = editor.style(cx).highlighted_line_background;
4343 editor.highlight_ranges::<Self>(ranges_to_highlight, color, cx);
4344 });
4345 }
4346 });
4347
4348 Ok(())
4349 }))
4350 }
4351
4352 pub fn rename(&mut self, _: &Rename, cx: &mut ViewContext<Self>) -> Option<Task<Result<()>>> {
4353 use language::ToOffset as _;
4354
4355 let project = self.project.clone()?;
4356 let selection = self.newest_anchor_selection().clone();
4357 let (cursor_buffer, cursor_buffer_position) = self
4358 .buffer
4359 .read(cx)
4360 .text_anchor_for_position(selection.head(), cx)?;
4361 let (tail_buffer, tail_buffer_position) = self
4362 .buffer
4363 .read(cx)
4364 .text_anchor_for_position(selection.tail(), cx)?;
4365 if tail_buffer != cursor_buffer {
4366 return None;
4367 }
4368
4369 let snapshot = cursor_buffer.read(cx).snapshot();
4370 let cursor_buffer_offset = cursor_buffer_position.to_offset(&snapshot);
4371 let tail_buffer_offset = tail_buffer_position.to_offset(&snapshot);
4372 let prepare_rename = project.update(cx, |project, cx| {
4373 project.prepare_rename(cursor_buffer, cursor_buffer_offset, cx)
4374 });
4375
4376 Some(cx.spawn(|this, mut cx| async move {
4377 if let Some(rename_range) = prepare_rename.await? {
4378 let rename_buffer_range = rename_range.to_offset(&snapshot);
4379 let cursor_offset_in_rename_range =
4380 cursor_buffer_offset.saturating_sub(rename_buffer_range.start);
4381 let tail_offset_in_rename_range =
4382 tail_buffer_offset.saturating_sub(rename_buffer_range.start);
4383
4384 this.update(&mut cx, |this, cx| {
4385 this.take_rename(cx);
4386 let style = this.style(cx);
4387 let buffer = this.buffer.read(cx).read(cx);
4388 let cursor_offset = selection.head().to_offset(&buffer);
4389 let rename_start = cursor_offset.saturating_sub(cursor_offset_in_rename_range);
4390 let rename_end = rename_start + rename_buffer_range.len();
4391 let range = buffer.anchor_before(rename_start)..buffer.anchor_after(rename_end);
4392 let old_name = buffer
4393 .text_for_range(rename_start..rename_end)
4394 .collect::<String>();
4395 drop(buffer);
4396
4397 // Position the selection in the rename editor so that it matches the current selection.
4398 let rename_editor = cx.add_view(|cx| {
4399 let mut editor = Editor::single_line(this.settings.clone(), None, cx);
4400 editor
4401 .buffer
4402 .update(cx, |buffer, cx| buffer.edit([0..0], &old_name, cx));
4403 editor.select_ranges(
4404 [tail_offset_in_rename_range..cursor_offset_in_rename_range],
4405 None,
4406 cx,
4407 );
4408 editor.highlight_ranges::<Rename>(
4409 vec![Anchor::min()..Anchor::max()],
4410 style.diff_background_inserted,
4411 cx,
4412 );
4413 editor
4414 });
4415 this.highlight_ranges::<Rename>(
4416 vec![range.clone()],
4417 style.diff_background_deleted,
4418 cx,
4419 );
4420 this.update_selections(
4421 vec![Selection {
4422 id: selection.id,
4423 start: rename_end,
4424 end: rename_end,
4425 reversed: false,
4426 goal: SelectionGoal::None,
4427 }],
4428 None,
4429 cx,
4430 );
4431 cx.focus(&rename_editor);
4432 let block_id = this.insert_blocks(
4433 [BlockProperties {
4434 position: range.start.clone(),
4435 height: 1,
4436 render: Arc::new({
4437 let editor = rename_editor.clone();
4438 move |cx: &BlockContext| {
4439 ChildView::new(editor.clone())
4440 .contained()
4441 .with_padding_left(cx.anchor_x)
4442 .boxed()
4443 }
4444 }),
4445 disposition: BlockDisposition::Below,
4446 }],
4447 cx,
4448 )[0];
4449 this.pending_rename = Some(RenameState {
4450 range,
4451 old_name,
4452 editor: rename_editor,
4453 block_id,
4454 });
4455 });
4456 }
4457
4458 Ok(())
4459 }))
4460 }
4461
4462 pub fn confirm_rename(
4463 workspace: &mut Workspace,
4464 _: &ConfirmRename,
4465 cx: &mut ViewContext<Workspace>,
4466 ) -> Option<Task<Result<()>>> {
4467 let editor = workspace.active_item(cx)?.act_as::<Editor>(cx)?;
4468
4469 let (buffer, range, old_name, new_name) = editor.update(cx, |editor, cx| {
4470 let rename = editor.take_rename(cx)?;
4471 let buffer = editor.buffer.read(cx);
4472 let (start_buffer, start) =
4473 buffer.text_anchor_for_position(rename.range.start.clone(), cx)?;
4474 let (end_buffer, end) =
4475 buffer.text_anchor_for_position(rename.range.end.clone(), cx)?;
4476 if start_buffer == end_buffer {
4477 let new_name = rename.editor.read(cx).text(cx);
4478 Some((start_buffer, start..end, rename.old_name, new_name))
4479 } else {
4480 None
4481 }
4482 })?;
4483
4484 let rename = workspace.project().clone().update(cx, |project, cx| {
4485 project.perform_rename(
4486 buffer.clone(),
4487 range.start.clone(),
4488 new_name.clone(),
4489 true,
4490 cx,
4491 )
4492 });
4493
4494 Some(cx.spawn(|workspace, cx| async move {
4495 let project_transaction = rename.await?;
4496 Self::open_project_transaction(
4497 editor,
4498 workspace,
4499 project_transaction,
4500 format!("Rename: {} → {}", old_name, new_name),
4501 cx,
4502 )
4503 .await
4504 }))
4505 }
4506
4507 fn take_rename(&mut self, cx: &mut ViewContext<Self>) -> Option<RenameState> {
4508 let rename = self.pending_rename.take()?;
4509 self.remove_blocks([rename.block_id].into_iter().collect(), cx);
4510 self.clear_highlighted_ranges::<Rename>(cx);
4511
4512 let editor = rename.editor.read(cx);
4513 let snapshot = self.buffer.read(cx).snapshot(cx);
4514 let selection = editor.newest_selection_with_snapshot::<usize>(&snapshot);
4515
4516 // Update the selection to match the position of the selection inside
4517 // the rename editor.
4518 let rename_range = rename.range.to_offset(&snapshot);
4519 let start = snapshot
4520 .clip_offset(rename_range.start + selection.start, Bias::Left)
4521 .min(rename_range.end);
4522 let end = snapshot
4523 .clip_offset(rename_range.start + selection.end, Bias::Left)
4524 .min(rename_range.end);
4525 self.update_selections(
4526 vec![Selection {
4527 id: self.newest_anchor_selection().id,
4528 start,
4529 end,
4530 reversed: selection.reversed,
4531 goal: SelectionGoal::None,
4532 }],
4533 None,
4534 cx,
4535 );
4536
4537 Some(rename)
4538 }
4539
4540 fn invalidate_rename_range(
4541 &mut self,
4542 buffer: &MultiBufferSnapshot,
4543 cx: &mut ViewContext<Self>,
4544 ) {
4545 if let Some(rename) = self.pending_rename.as_ref() {
4546 if self.selections.len() == 1 {
4547 let head = self.selections[0].head().to_offset(buffer);
4548 let range = rename.range.to_offset(buffer).to_inclusive();
4549 if range.contains(&head) {
4550 return;
4551 }
4552 }
4553 let rename = self.pending_rename.take().unwrap();
4554 self.remove_blocks([rename.block_id].into_iter().collect(), cx);
4555 self.clear_highlighted_ranges::<Rename>(cx);
4556 }
4557 }
4558
4559 #[cfg(any(test, feature = "test-support"))]
4560 pub fn pending_rename(&self) -> Option<&RenameState> {
4561 self.pending_rename.as_ref()
4562 }
4563
4564 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
4565 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
4566 let buffer = self.buffer.read(cx).snapshot(cx);
4567 let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
4568 let is_valid = buffer
4569 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone())
4570 .any(|entry| {
4571 entry.diagnostic.is_primary
4572 && !entry.range.is_empty()
4573 && entry.range.start == primary_range_start
4574 && entry.diagnostic.message == active_diagnostics.primary_message
4575 });
4576
4577 if is_valid != active_diagnostics.is_valid {
4578 active_diagnostics.is_valid = is_valid;
4579 let mut new_styles = HashMap::default();
4580 for (block_id, diagnostic) in &active_diagnostics.blocks {
4581 new_styles.insert(
4582 *block_id,
4583 diagnostic_block_renderer(
4584 diagnostic.clone(),
4585 is_valid,
4586 self.settings.clone(),
4587 ),
4588 );
4589 }
4590 self.display_map
4591 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
4592 }
4593 }
4594 }
4595
4596 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) {
4597 self.dismiss_diagnostics(cx);
4598 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
4599 let buffer = self.buffer.read(cx).snapshot(cx);
4600
4601 let mut primary_range = None;
4602 let mut primary_message = None;
4603 let mut group_end = Point::zero();
4604 let diagnostic_group = buffer
4605 .diagnostic_group::<Point>(group_id)
4606 .map(|entry| {
4607 if entry.range.end > group_end {
4608 group_end = entry.range.end;
4609 }
4610 if entry.diagnostic.is_primary {
4611 primary_range = Some(entry.range.clone());
4612 primary_message = Some(entry.diagnostic.message.clone());
4613 }
4614 entry
4615 })
4616 .collect::<Vec<_>>();
4617 let primary_range = primary_range.unwrap();
4618 let primary_message = primary_message.unwrap();
4619 let primary_range =
4620 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
4621
4622 let blocks = display_map
4623 .insert_blocks(
4624 diagnostic_group.iter().map(|entry| {
4625 let diagnostic = entry.diagnostic.clone();
4626 let message_height = diagnostic.message.lines().count() as u8;
4627 BlockProperties {
4628 position: buffer.anchor_after(entry.range.start),
4629 height: message_height,
4630 render: diagnostic_block_renderer(
4631 diagnostic,
4632 true,
4633 self.settings.clone(),
4634 ),
4635 disposition: BlockDisposition::Below,
4636 }
4637 }),
4638 cx,
4639 )
4640 .into_iter()
4641 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
4642 .collect();
4643
4644 Some(ActiveDiagnosticGroup {
4645 primary_range,
4646 primary_message,
4647 blocks,
4648 is_valid: true,
4649 })
4650 });
4651 }
4652
4653 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
4654 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
4655 self.display_map.update(cx, |display_map, cx| {
4656 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
4657 });
4658 cx.notify();
4659 }
4660 }
4661
4662 fn build_columnar_selection(
4663 &mut self,
4664 display_map: &DisplaySnapshot,
4665 row: u32,
4666 columns: &Range<u32>,
4667 reversed: bool,
4668 ) -> Option<Selection<Point>> {
4669 let is_empty = columns.start == columns.end;
4670 let line_len = display_map.line_len(row);
4671 if columns.start < line_len || (is_empty && columns.start == line_len) {
4672 let start = DisplayPoint::new(row, columns.start);
4673 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
4674 Some(Selection {
4675 id: post_inc(&mut self.next_selection_id),
4676 start: start.to_point(display_map),
4677 end: end.to_point(display_map),
4678 reversed,
4679 goal: SelectionGoal::ColumnRange {
4680 start: columns.start,
4681 end: columns.end,
4682 },
4683 })
4684 } else {
4685 None
4686 }
4687 }
4688
4689 pub fn local_selections_in_range(
4690 &self,
4691 range: Range<Anchor>,
4692 display_map: &DisplaySnapshot,
4693 ) -> Vec<Selection<Point>> {
4694 let buffer = &display_map.buffer_snapshot;
4695
4696 let start_ix = match self
4697 .selections
4698 .binary_search_by(|probe| probe.end.cmp(&range.start, &buffer).unwrap())
4699 {
4700 Ok(ix) | Err(ix) => ix,
4701 };
4702 let end_ix = match self
4703 .selections
4704 .binary_search_by(|probe| probe.start.cmp(&range.end, &buffer).unwrap())
4705 {
4706 Ok(ix) => ix + 1,
4707 Err(ix) => ix,
4708 };
4709
4710 fn point_selection(
4711 selection: &Selection<Anchor>,
4712 buffer: &MultiBufferSnapshot,
4713 ) -> Selection<Point> {
4714 let start = selection.start.to_point(&buffer);
4715 let end = selection.end.to_point(&buffer);
4716 Selection {
4717 id: selection.id,
4718 start,
4719 end,
4720 reversed: selection.reversed,
4721 goal: selection.goal,
4722 }
4723 }
4724
4725 self.selections[start_ix..end_ix]
4726 .iter()
4727 .chain(
4728 self.pending_selection
4729 .as_ref()
4730 .map(|pending| &pending.selection),
4731 )
4732 .map(|s| point_selection(s, &buffer))
4733 .collect()
4734 }
4735
4736 pub fn local_selections<'a, D>(&self, cx: &'a AppContext) -> Vec<Selection<D>>
4737 where
4738 D: 'a + TextDimension + Ord + Sub<D, Output = D>,
4739 {
4740 let buffer = self.buffer.read(cx).snapshot(cx);
4741 let mut selections = self
4742 .resolve_selections::<D, _>(self.selections.iter(), &buffer)
4743 .peekable();
4744
4745 let mut pending_selection = self.pending_selection::<D>(&buffer);
4746
4747 iter::from_fn(move || {
4748 if let Some(pending) = pending_selection.as_mut() {
4749 while let Some(next_selection) = selections.peek() {
4750 if pending.start <= next_selection.end && pending.end >= next_selection.start {
4751 let next_selection = selections.next().unwrap();
4752 if next_selection.start < pending.start {
4753 pending.start = next_selection.start;
4754 }
4755 if next_selection.end > pending.end {
4756 pending.end = next_selection.end;
4757 }
4758 } else if next_selection.end < pending.start {
4759 return selections.next();
4760 } else {
4761 break;
4762 }
4763 }
4764
4765 pending_selection.take()
4766 } else {
4767 selections.next()
4768 }
4769 })
4770 .collect()
4771 }
4772
4773 fn resolve_selections<'a, D, I>(
4774 &self,
4775 selections: I,
4776 snapshot: &MultiBufferSnapshot,
4777 ) -> impl 'a + Iterator<Item = Selection<D>>
4778 where
4779 D: TextDimension + Ord + Sub<D, Output = D>,
4780 I: 'a + IntoIterator<Item = &'a Selection<Anchor>>,
4781 {
4782 let (to_summarize, selections) = selections.into_iter().tee();
4783 let mut summaries = snapshot
4784 .summaries_for_anchors::<D, _>(to_summarize.flat_map(|s| [&s.start, &s.end]))
4785 .into_iter();
4786 selections.map(move |s| Selection {
4787 id: s.id,
4788 start: summaries.next().unwrap(),
4789 end: summaries.next().unwrap(),
4790 reversed: s.reversed,
4791 goal: s.goal,
4792 })
4793 }
4794
4795 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4796 &self,
4797 snapshot: &MultiBufferSnapshot,
4798 ) -> Option<Selection<D>> {
4799 self.pending_selection
4800 .as_ref()
4801 .map(|pending| self.resolve_selection(&pending.selection, &snapshot))
4802 }
4803
4804 fn resolve_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4805 &self,
4806 selection: &Selection<Anchor>,
4807 buffer: &MultiBufferSnapshot,
4808 ) -> Selection<D> {
4809 Selection {
4810 id: selection.id,
4811 start: selection.start.summary::<D>(&buffer),
4812 end: selection.end.summary::<D>(&buffer),
4813 reversed: selection.reversed,
4814 goal: selection.goal,
4815 }
4816 }
4817
4818 fn selection_count<'a>(&self) -> usize {
4819 let mut count = self.selections.len();
4820 if self.pending_selection.is_some() {
4821 count += 1;
4822 }
4823 count
4824 }
4825
4826 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4827 &self,
4828 cx: &AppContext,
4829 ) -> Selection<D> {
4830 let snapshot = self.buffer.read(cx).read(cx);
4831 self.selections
4832 .iter()
4833 .min_by_key(|s| s.id)
4834 .map(|selection| self.resolve_selection(selection, &snapshot))
4835 .or_else(|| self.pending_selection(&snapshot))
4836 .unwrap()
4837 }
4838
4839 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4840 &self,
4841 cx: &AppContext,
4842 ) -> Selection<D> {
4843 self.resolve_selection(
4844 self.newest_anchor_selection(),
4845 &self.buffer.read(cx).read(cx),
4846 )
4847 }
4848
4849 pub fn newest_selection_with_snapshot<D: TextDimension + Ord + Sub<D, Output = D>>(
4850 &self,
4851 snapshot: &MultiBufferSnapshot,
4852 ) -> Selection<D> {
4853 self.resolve_selection(self.newest_anchor_selection(), snapshot)
4854 }
4855
4856 pub fn newest_anchor_selection(&self) -> &Selection<Anchor> {
4857 self.pending_selection
4858 .as_ref()
4859 .map(|s| &s.selection)
4860 .or_else(|| self.selections.iter().max_by_key(|s| s.id))
4861 .unwrap()
4862 }
4863
4864 pub fn update_selections<T>(
4865 &mut self,
4866 mut selections: Vec<Selection<T>>,
4867 autoscroll: Option<Autoscroll>,
4868 cx: &mut ViewContext<Self>,
4869 ) where
4870 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
4871 {
4872 let buffer = self.buffer.read(cx).snapshot(cx);
4873 selections.sort_unstable_by_key(|s| s.start);
4874
4875 // Merge overlapping selections.
4876 let mut i = 1;
4877 while i < selections.len() {
4878 if selections[i - 1].end >= selections[i].start {
4879 let removed = selections.remove(i);
4880 if removed.start < selections[i - 1].start {
4881 selections[i - 1].start = removed.start;
4882 }
4883 if removed.end > selections[i - 1].end {
4884 selections[i - 1].end = removed.end;
4885 }
4886 } else {
4887 i += 1;
4888 }
4889 }
4890
4891 if let Some(autoscroll) = autoscroll {
4892 self.request_autoscroll(autoscroll, cx);
4893 }
4894
4895 self.set_selections(
4896 Arc::from_iter(selections.into_iter().map(|selection| {
4897 let end_bias = if selection.end > selection.start {
4898 Bias::Left
4899 } else {
4900 Bias::Right
4901 };
4902 Selection {
4903 id: selection.id,
4904 start: buffer.anchor_after(selection.start),
4905 end: buffer.anchor_at(selection.end, end_bias),
4906 reversed: selection.reversed,
4907 goal: selection.goal,
4908 }
4909 })),
4910 None,
4911 cx,
4912 );
4913 }
4914
4915 /// Compute new ranges for any selections that were located in excerpts that have
4916 /// since been removed.
4917 ///
4918 /// Returns a `HashMap` indicating which selections whose former head position
4919 /// was no longer present. The keys of the map are selection ids. The values are
4920 /// the id of the new excerpt where the head of the selection has been moved.
4921 pub fn refresh_selections(&mut self, cx: &mut ViewContext<Self>) -> HashMap<usize, ExcerptId> {
4922 let snapshot = self.buffer.read(cx).read(cx);
4923 let anchors_with_status = snapshot.refresh_anchors(
4924 self.selections
4925 .iter()
4926 .flat_map(|selection| [&selection.start, &selection.end]),
4927 );
4928 let offsets =
4929 snapshot.summaries_for_anchors::<usize, _>(anchors_with_status.iter().map(|a| &a.1));
4930 let offsets = offsets.chunks(2);
4931 let statuses = anchors_with_status
4932 .chunks(2)
4933 .map(|a| (a[0].0 / 2, a[0].2, a[1].2));
4934
4935 let mut selections_with_lost_position = HashMap::default();
4936 let new_selections = offsets
4937 .zip(statuses)
4938 .map(|(offsets, (selection_ix, kept_start, kept_end))| {
4939 let selection = &self.selections[selection_ix];
4940 let kept_head = if selection.reversed {
4941 kept_start
4942 } else {
4943 kept_end
4944 };
4945 if !kept_head {
4946 selections_with_lost_position
4947 .insert(selection.id, selection.head().excerpt_id.clone());
4948 }
4949
4950 Selection {
4951 id: selection.id,
4952 start: offsets[0],
4953 end: offsets[1],
4954 reversed: selection.reversed,
4955 goal: selection.goal,
4956 }
4957 })
4958 .collect();
4959 drop(snapshot);
4960 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
4961 selections_with_lost_position
4962 }
4963
4964 fn set_selections(
4965 &mut self,
4966 selections: Arc<[Selection<Anchor>]>,
4967 pending_selection: Option<PendingSelection>,
4968 cx: &mut ViewContext<Self>,
4969 ) {
4970 let old_cursor_position = self.newest_anchor_selection().head();
4971
4972 self.selections = selections;
4973 self.pending_selection = pending_selection;
4974 if self.focused {
4975 self.buffer.update(cx, |buffer, cx| {
4976 buffer.set_active_selections(&self.selections, cx)
4977 });
4978 }
4979
4980 let display_map = self
4981 .display_map
4982 .update(cx, |display_map, cx| display_map.snapshot(cx));
4983 let buffer = &display_map.buffer_snapshot;
4984 self.add_selections_state = None;
4985 self.select_next_state = None;
4986 self.select_larger_syntax_node_stack.clear();
4987 self.autoclose_stack.invalidate(&self.selections, &buffer);
4988 self.snippet_stack.invalidate(&self.selections, &buffer);
4989 self.invalidate_rename_range(&buffer, cx);
4990
4991 let new_cursor_position = self.newest_anchor_selection().head();
4992
4993 self.push_to_nav_history(
4994 old_cursor_position.clone(),
4995 Some(new_cursor_position.to_point(&buffer)),
4996 cx,
4997 );
4998
4999 let completion_menu = match self.context_menu.as_mut() {
5000 Some(ContextMenu::Completions(menu)) => Some(menu),
5001 _ => {
5002 self.context_menu.take();
5003 None
5004 }
5005 };
5006
5007 if let Some(completion_menu) = completion_menu {
5008 let cursor_position = new_cursor_position.to_offset(&buffer);
5009 let (word_range, kind) =
5010 buffer.surrounding_word(completion_menu.initial_position.clone());
5011 if kind == Some(CharKind::Word) && word_range.to_inclusive().contains(&cursor_position)
5012 {
5013 let query = Self::completion_query(&buffer, cursor_position);
5014 cx.background()
5015 .block(completion_menu.filter(query.as_deref(), cx.background().clone()));
5016 self.show_completions(&ShowCompletions, cx);
5017 } else {
5018 self.hide_context_menu(cx);
5019 }
5020 }
5021
5022 if old_cursor_position.to_display_point(&display_map).row()
5023 != new_cursor_position.to_display_point(&display_map).row()
5024 {
5025 self.available_code_actions.take();
5026 }
5027 self.refresh_code_actions(cx);
5028 self.refresh_document_highlights(cx);
5029
5030 self.pause_cursor_blinking(cx);
5031 cx.emit(Event::SelectionsChanged);
5032 }
5033
5034 pub fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
5035 self.autoscroll_request = Some(autoscroll);
5036 cx.notify();
5037 }
5038
5039 fn start_transaction(&mut self, cx: &mut ViewContext<Self>) {
5040 self.start_transaction_at(Instant::now(), cx);
5041 }
5042
5043 fn start_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
5044 self.end_selection(cx);
5045 if let Some(tx_id) = self
5046 .buffer
5047 .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
5048 {
5049 self.selection_history
5050 .insert(tx_id, (self.selections.clone(), None));
5051 }
5052 }
5053
5054 fn end_transaction(&mut self, cx: &mut ViewContext<Self>) {
5055 self.end_transaction_at(Instant::now(), cx);
5056 }
5057
5058 fn end_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
5059 if let Some(tx_id) = self
5060 .buffer
5061 .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
5062 {
5063 if let Some((_, end_selections)) = self.selection_history.get_mut(&tx_id) {
5064 *end_selections = Some(self.selections.clone());
5065 } else {
5066 log::error!("unexpectedly ended a transaction that wasn't started by this editor");
5067 }
5068 }
5069 }
5070
5071 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
5072 log::info!("Editor::page_up");
5073 }
5074
5075 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
5076 log::info!("Editor::page_down");
5077 }
5078
5079 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
5080 let mut fold_ranges = Vec::new();
5081
5082 let selections = self.local_selections::<Point>(cx);
5083 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
5084 for selection in selections {
5085 let range = selection.display_range(&display_map).sorted();
5086 let buffer_start_row = range.start.to_point(&display_map).row;
5087
5088 for row in (0..=range.end.row()).rev() {
5089 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
5090 let fold_range = self.foldable_range_for_line(&display_map, row);
5091 if fold_range.end.row >= buffer_start_row {
5092 fold_ranges.push(fold_range);
5093 if row <= range.start.row() {
5094 break;
5095 }
5096 }
5097 }
5098 }
5099 }
5100
5101 self.fold_ranges(fold_ranges, cx);
5102 }
5103
5104 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
5105 let selections = self.local_selections::<Point>(cx);
5106 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
5107 let buffer = &display_map.buffer_snapshot;
5108 let ranges = selections
5109 .iter()
5110 .map(|s| {
5111 let range = s.display_range(&display_map).sorted();
5112 let mut start = range.start.to_point(&display_map);
5113 let mut end = range.end.to_point(&display_map);
5114 start.column = 0;
5115 end.column = buffer.line_len(end.row);
5116 start..end
5117 })
5118 .collect::<Vec<_>>();
5119 self.unfold_ranges(ranges, cx);
5120 }
5121
5122 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
5123 let max_point = display_map.max_point();
5124 if display_row >= max_point.row() {
5125 false
5126 } else {
5127 let (start_indent, is_blank) = display_map.line_indent(display_row);
5128 if is_blank {
5129 false
5130 } else {
5131 for display_row in display_row + 1..=max_point.row() {
5132 let (indent, is_blank) = display_map.line_indent(display_row);
5133 if !is_blank {
5134 return indent > start_indent;
5135 }
5136 }
5137 false
5138 }
5139 }
5140 }
5141
5142 fn foldable_range_for_line(
5143 &self,
5144 display_map: &DisplaySnapshot,
5145 start_row: u32,
5146 ) -> Range<Point> {
5147 let max_point = display_map.max_point();
5148
5149 let (start_indent, _) = display_map.line_indent(start_row);
5150 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
5151 let mut end = None;
5152 for row in start_row + 1..=max_point.row() {
5153 let (indent, is_blank) = display_map.line_indent(row);
5154 if !is_blank && indent <= start_indent {
5155 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
5156 break;
5157 }
5158 }
5159
5160 let end = end.unwrap_or(max_point);
5161 return start.to_point(display_map)..end.to_point(display_map);
5162 }
5163
5164 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
5165 let selections = self.local_selections::<Point>(cx);
5166 let ranges = selections.into_iter().map(|s| s.start..s.end);
5167 self.fold_ranges(ranges, cx);
5168 }
5169
5170 fn fold_ranges<T: ToOffset>(
5171 &mut self,
5172 ranges: impl IntoIterator<Item = Range<T>>,
5173 cx: &mut ViewContext<Self>,
5174 ) {
5175 let mut ranges = ranges.into_iter().peekable();
5176 if ranges.peek().is_some() {
5177 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
5178 self.request_autoscroll(Autoscroll::Fit, cx);
5179 cx.notify();
5180 }
5181 }
5182
5183 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
5184 if !ranges.is_empty() {
5185 self.display_map
5186 .update(cx, |map, cx| map.unfold(ranges, cx));
5187 self.request_autoscroll(Autoscroll::Fit, cx);
5188 cx.notify();
5189 }
5190 }
5191
5192 pub fn insert_blocks(
5193 &mut self,
5194 blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
5195 cx: &mut ViewContext<Self>,
5196 ) -> Vec<BlockId> {
5197 let blocks = self
5198 .display_map
5199 .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
5200 self.request_autoscroll(Autoscroll::Fit, cx);
5201 blocks
5202 }
5203
5204 pub fn replace_blocks(
5205 &mut self,
5206 blocks: HashMap<BlockId, RenderBlock>,
5207 cx: &mut ViewContext<Self>,
5208 ) {
5209 self.display_map
5210 .update(cx, |display_map, _| display_map.replace_blocks(blocks));
5211 self.request_autoscroll(Autoscroll::Fit, cx);
5212 }
5213
5214 pub fn remove_blocks(&mut self, block_ids: HashSet<BlockId>, cx: &mut ViewContext<Self>) {
5215 self.display_map.update(cx, |display_map, cx| {
5216 display_map.remove_blocks(block_ids, cx)
5217 });
5218 }
5219
5220 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
5221 self.display_map
5222 .update(cx, |map, cx| map.snapshot(cx))
5223 .longest_row()
5224 }
5225
5226 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
5227 self.display_map
5228 .update(cx, |map, cx| map.snapshot(cx))
5229 .max_point()
5230 }
5231
5232 pub fn text(&self, cx: &AppContext) -> String {
5233 self.buffer.read(cx).read(cx).text()
5234 }
5235
5236 pub fn set_text(&mut self, text: impl Into<String>, cx: &mut ViewContext<Self>) {
5237 self.buffer
5238 .read(cx)
5239 .as_singleton()
5240 .expect("you can only call set_text on editors for singleton buffers")
5241 .update(cx, |buffer, cx| buffer.set_text(text, cx));
5242 }
5243
5244 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
5245 self.display_map
5246 .update(cx, |map, cx| map.snapshot(cx))
5247 .text()
5248 }
5249
5250 pub fn soft_wrap_mode(&self, cx: &AppContext) -> SoftWrap {
5251 let language = self.language(cx);
5252 let settings = self.settings.borrow();
5253 let mode = self
5254 .soft_wrap_mode_override
5255 .unwrap_or_else(|| settings.soft_wrap(language));
5256 match mode {
5257 settings::SoftWrap::None => SoftWrap::None,
5258 settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
5259 settings::SoftWrap::PreferredLineLength => {
5260 SoftWrap::Column(settings.preferred_line_length(language))
5261 }
5262 }
5263 }
5264
5265 pub fn set_soft_wrap_mode(&mut self, mode: settings::SoftWrap, cx: &mut ViewContext<Self>) {
5266 self.soft_wrap_mode_override = Some(mode);
5267 cx.notify();
5268 }
5269
5270 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
5271 self.display_map
5272 .update(cx, |map, cx| map.set_wrap_width(width, cx))
5273 }
5274
5275 pub fn set_highlighted_rows(&mut self, rows: Option<Range<u32>>) {
5276 self.highlighted_rows = rows;
5277 }
5278
5279 pub fn highlighted_rows(&self) -> Option<Range<u32>> {
5280 self.highlighted_rows.clone()
5281 }
5282
5283 pub fn highlight_ranges<T: 'static>(
5284 &mut self,
5285 ranges: Vec<Range<Anchor>>,
5286 color: Color,
5287 cx: &mut ViewContext<Self>,
5288 ) {
5289 self.highlighted_ranges
5290 .insert(TypeId::of::<T>(), (color, ranges));
5291 cx.notify();
5292 }
5293
5294 pub fn clear_highlighted_ranges<T: 'static>(
5295 &mut self,
5296 cx: &mut ViewContext<Self>,
5297 ) -> Option<(Color, Vec<Range<Anchor>>)> {
5298 cx.notify();
5299 self.highlighted_ranges.remove(&TypeId::of::<T>())
5300 }
5301
5302 #[cfg(feature = "test-support")]
5303 pub fn all_highlighted_ranges(
5304 &mut self,
5305 cx: &mut ViewContext<Self>,
5306 ) -> Vec<(Range<DisplayPoint>, Color)> {
5307 let snapshot = self.snapshot(cx);
5308 let buffer = &snapshot.buffer_snapshot;
5309 let start = buffer.anchor_before(0);
5310 let end = buffer.anchor_after(buffer.len());
5311 self.highlighted_ranges_in_range(start..end, &snapshot)
5312 }
5313
5314 pub fn highlighted_ranges_for_type<T: 'static>(&self) -> Option<(Color, &[Range<Anchor>])> {
5315 self.highlighted_ranges
5316 .get(&TypeId::of::<T>())
5317 .map(|(color, ranges)| (*color, ranges.as_slice()))
5318 }
5319
5320 pub fn highlighted_ranges_in_range(
5321 &self,
5322 search_range: Range<Anchor>,
5323 display_snapshot: &DisplaySnapshot,
5324 ) -> Vec<(Range<DisplayPoint>, Color)> {
5325 let mut results = Vec::new();
5326 let buffer = &display_snapshot.buffer_snapshot;
5327 for (color, ranges) in self.highlighted_ranges.values() {
5328 let start_ix = match ranges.binary_search_by(|probe| {
5329 let cmp = probe.end.cmp(&search_range.start, &buffer).unwrap();
5330 if cmp.is_gt() {
5331 Ordering::Greater
5332 } else {
5333 Ordering::Less
5334 }
5335 }) {
5336 Ok(i) | Err(i) => i,
5337 };
5338 for range in &ranges[start_ix..] {
5339 if range.start.cmp(&search_range.end, &buffer).unwrap().is_ge() {
5340 break;
5341 }
5342 let start = range
5343 .start
5344 .to_point(buffer)
5345 .to_display_point(display_snapshot);
5346 let end = range
5347 .end
5348 .to_point(buffer)
5349 .to_display_point(display_snapshot);
5350 results.push((start..end, *color))
5351 }
5352 }
5353 results
5354 }
5355
5356 fn next_blink_epoch(&mut self) -> usize {
5357 self.blink_epoch += 1;
5358 self.blink_epoch
5359 }
5360
5361 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
5362 if !self.focused {
5363 return;
5364 }
5365
5366 self.show_local_cursors = true;
5367 cx.notify();
5368
5369 let epoch = self.next_blink_epoch();
5370 cx.spawn(|this, mut cx| {
5371 let this = this.downgrade();
5372 async move {
5373 Timer::after(CURSOR_BLINK_INTERVAL).await;
5374 if let Some(this) = this.upgrade(&cx) {
5375 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
5376 }
5377 }
5378 })
5379 .detach();
5380 }
5381
5382 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
5383 if epoch == self.blink_epoch {
5384 self.blinking_paused = false;
5385 self.blink_cursors(epoch, cx);
5386 }
5387 }
5388
5389 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
5390 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
5391 self.show_local_cursors = !self.show_local_cursors;
5392 cx.notify();
5393
5394 let epoch = self.next_blink_epoch();
5395 cx.spawn(|this, mut cx| {
5396 let this = this.downgrade();
5397 async move {
5398 Timer::after(CURSOR_BLINK_INTERVAL).await;
5399 if let Some(this) = this.upgrade(&cx) {
5400 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
5401 }
5402 }
5403 })
5404 .detach();
5405 }
5406 }
5407
5408 pub fn show_local_cursors(&self) -> bool {
5409 self.show_local_cursors
5410 }
5411
5412 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
5413 cx.notify();
5414 }
5415
5416 fn on_buffer_event(
5417 &mut self,
5418 _: ModelHandle<MultiBuffer>,
5419 event: &language::Event,
5420 cx: &mut ViewContext<Self>,
5421 ) {
5422 match event {
5423 language::Event::Edited => {
5424 self.refresh_active_diagnostics(cx);
5425 self.refresh_code_actions(cx);
5426 cx.emit(Event::Edited);
5427 }
5428 language::Event::Dirtied => cx.emit(Event::Dirtied),
5429 language::Event::Saved => cx.emit(Event::Saved),
5430 language::Event::FileHandleChanged => cx.emit(Event::TitleChanged),
5431 language::Event::Reloaded => cx.emit(Event::TitleChanged),
5432 language::Event::Closed => cx.emit(Event::Closed),
5433 language::Event::DiagnosticsUpdated => {
5434 self.refresh_active_diagnostics(cx);
5435 }
5436 _ => {}
5437 }
5438 }
5439
5440 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
5441 cx.notify();
5442 }
5443
5444 pub fn set_searchable(&mut self, searchable: bool) {
5445 self.searchable = searchable;
5446 }
5447
5448 pub fn searchable(&self) -> bool {
5449 self.searchable
5450 }
5451
5452 fn open_excerpts(workspace: &mut Workspace, _: &OpenExcerpts, cx: &mut ViewContext<Workspace>) {
5453 let active_item = workspace.active_item(cx);
5454 let editor_handle = if let Some(editor) = active_item
5455 .as_ref()
5456 .and_then(|item| item.act_as::<Self>(cx))
5457 {
5458 editor
5459 } else {
5460 cx.propagate_action();
5461 return;
5462 };
5463
5464 let editor = editor_handle.read(cx);
5465 let buffer = editor.buffer.read(cx);
5466 if buffer.is_singleton() {
5467 cx.propagate_action();
5468 return;
5469 }
5470
5471 let mut new_selections_by_buffer = HashMap::default();
5472 for selection in editor.local_selections::<usize>(cx) {
5473 for (buffer, mut range) in
5474 buffer.range_to_buffer_ranges(selection.start..selection.end, cx)
5475 {
5476 if selection.reversed {
5477 mem::swap(&mut range.start, &mut range.end);
5478 }
5479 new_selections_by_buffer
5480 .entry(buffer)
5481 .or_insert(Vec::new())
5482 .push(range)
5483 }
5484 }
5485
5486 editor_handle.update(cx, |editor, cx| {
5487 editor.push_to_nav_history(editor.newest_anchor_selection().head(), None, cx);
5488 });
5489 let nav_history = workspace.active_pane().read(cx).nav_history().clone();
5490 nav_history.borrow_mut().disable();
5491
5492 // We defer the pane interaction because we ourselves are a workspace item
5493 // and activating a new item causes the pane to call a method on us reentrantly,
5494 // which panics if we're on the stack.
5495 cx.defer(move |workspace, cx| {
5496 for (ix, (buffer, ranges)) in new_selections_by_buffer.into_iter().enumerate() {
5497 let buffer = BufferItemHandle(buffer);
5498 if ix == 0 && !workspace.activate_pane_for_item(&buffer, cx) {
5499 workspace.activate_next_pane(cx);
5500 }
5501
5502 let editor = workspace
5503 .open_item(buffer, cx)
5504 .downcast::<Editor>()
5505 .unwrap();
5506
5507 editor.update(cx, |editor, cx| {
5508 editor.select_ranges(ranges, Some(Autoscroll::Newest), cx);
5509 });
5510 }
5511
5512 nav_history.borrow_mut().enable();
5513 });
5514 }
5515}
5516
5517impl EditorSnapshot {
5518 pub fn is_focused(&self) -> bool {
5519 self.is_focused
5520 }
5521
5522 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
5523 self.placeholder_text.as_ref()
5524 }
5525
5526 pub fn scroll_position(&self) -> Vector2F {
5527 compute_scroll_position(
5528 &self.display_snapshot,
5529 self.scroll_position,
5530 &self.scroll_top_anchor,
5531 )
5532 }
5533}
5534
5535impl Deref for EditorSnapshot {
5536 type Target = DisplaySnapshot;
5537
5538 fn deref(&self) -> &Self::Target {
5539 &self.display_snapshot
5540 }
5541}
5542
5543fn compute_scroll_position(
5544 snapshot: &DisplaySnapshot,
5545 mut scroll_position: Vector2F,
5546 scroll_top_anchor: &Option<Anchor>,
5547) -> Vector2F {
5548 if let Some(anchor) = scroll_top_anchor {
5549 let scroll_top = anchor.to_display_point(snapshot).row() as f32;
5550 scroll_position.set_y(scroll_top + scroll_position.y());
5551 } else {
5552 scroll_position.set_y(0.);
5553 }
5554 scroll_position
5555}
5556
5557#[derive(Copy, Clone)]
5558pub enum Event {
5559 Activate,
5560 Edited,
5561 Blurred,
5562 Dirtied,
5563 Saved,
5564 TitleChanged,
5565 SelectionsChanged,
5566 Closed,
5567}
5568
5569impl Entity for Editor {
5570 type Event = Event;
5571}
5572
5573impl View for Editor {
5574 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
5575 let style = self.style(cx);
5576 self.display_map.update(cx, |map, cx| {
5577 map.set_font(style.text.font_id, style.text.font_size, cx)
5578 });
5579 EditorElement::new(self.handle.clone(), style.clone(), self.cursor_shape).boxed()
5580 }
5581
5582 fn ui_name() -> &'static str {
5583 "Editor"
5584 }
5585
5586 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
5587 self.focused = true;
5588 self.blink_cursors(self.blink_epoch, cx);
5589 self.buffer.update(cx, |buffer, cx| {
5590 buffer.finalize_last_transaction(cx);
5591 buffer.set_active_selections(&self.selections, cx)
5592 });
5593 }
5594
5595 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
5596 self.focused = false;
5597 self.show_local_cursors = false;
5598 self.buffer
5599 .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
5600 self.hide_context_menu(cx);
5601 cx.emit(Event::Blurred);
5602 cx.notify();
5603 }
5604
5605 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
5606 let mut cx = Self::default_keymap_context();
5607 let mode = match self.mode {
5608 EditorMode::SingleLine => "single_line",
5609 EditorMode::AutoHeight { .. } => "auto_height",
5610 EditorMode::Full => "full",
5611 };
5612 cx.map.insert("mode".into(), mode.into());
5613 if self.pending_rename.is_some() {
5614 cx.set.insert("renaming".into());
5615 }
5616 match self.context_menu.as_ref() {
5617 Some(ContextMenu::Completions(_)) => {
5618 cx.set.insert("showing_completions".into());
5619 }
5620 Some(ContextMenu::CodeActions(_)) => {
5621 cx.set.insert("showing_code_actions".into());
5622 }
5623 None => {}
5624 }
5625 cx
5626 }
5627}
5628
5629fn build_style(
5630 settings: &Settings,
5631 get_field_editor_theme: Option<GetFieldEditorTheme>,
5632 cx: &AppContext,
5633) -> EditorStyle {
5634 let mut theme = settings.theme.editor.clone();
5635 if let Some(get_field_editor_theme) = get_field_editor_theme {
5636 let field_editor_theme = get_field_editor_theme(&settings.theme);
5637 if let Some(background) = field_editor_theme.container.background_color {
5638 theme.background = background;
5639 }
5640 theme.text_color = field_editor_theme.text.color;
5641 theme.selection = field_editor_theme.selection;
5642 EditorStyle {
5643 text: field_editor_theme.text,
5644 placeholder_text: field_editor_theme.placeholder_text,
5645 theme,
5646 }
5647 } else {
5648 let font_cache = cx.font_cache();
5649 let font_family_id = settings.buffer_font_family;
5650 let font_family_name = cx.font_cache().family_name(font_family_id).unwrap();
5651 let font_properties = Default::default();
5652 let font_id = font_cache
5653 .select_font(font_family_id, &font_properties)
5654 .unwrap();
5655 let font_size = settings.buffer_font_size;
5656 EditorStyle {
5657 text: TextStyle {
5658 color: settings.theme.editor.text_color,
5659 font_family_name,
5660 font_family_id,
5661 font_id,
5662 font_size,
5663 font_properties,
5664 underline: None,
5665 },
5666 placeholder_text: None,
5667 theme,
5668 }
5669 }
5670}
5671
5672impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
5673 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
5674 let start = self.start.to_point(buffer);
5675 let end = self.end.to_point(buffer);
5676 if self.reversed {
5677 end..start
5678 } else {
5679 start..end
5680 }
5681 }
5682
5683 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
5684 let start = self.start.to_offset(buffer);
5685 let end = self.end.to_offset(buffer);
5686 if self.reversed {
5687 end..start
5688 } else {
5689 start..end
5690 }
5691 }
5692
5693 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
5694 let start = self
5695 .start
5696 .to_point(&map.buffer_snapshot)
5697 .to_display_point(map);
5698 let end = self
5699 .end
5700 .to_point(&map.buffer_snapshot)
5701 .to_display_point(map);
5702 if self.reversed {
5703 end..start
5704 } else {
5705 start..end
5706 }
5707 }
5708
5709 fn spanned_rows(
5710 &self,
5711 include_end_if_at_line_start: bool,
5712 map: &DisplaySnapshot,
5713 ) -> Range<u32> {
5714 let start = self.start.to_point(&map.buffer_snapshot);
5715 let mut end = self.end.to_point(&map.buffer_snapshot);
5716 if !include_end_if_at_line_start && start.row != end.row && end.column == 0 {
5717 end.row -= 1;
5718 }
5719
5720 let buffer_start = map.prev_line_boundary(start).0;
5721 let buffer_end = map.next_line_boundary(end).0;
5722 buffer_start.row..buffer_end.row + 1
5723 }
5724}
5725
5726impl<T: InvalidationRegion> InvalidationStack<T> {
5727 fn invalidate<S>(&mut self, selections: &[Selection<S>], buffer: &MultiBufferSnapshot)
5728 where
5729 S: Clone + ToOffset,
5730 {
5731 while let Some(region) = self.last() {
5732 let all_selections_inside_invalidation_ranges =
5733 if selections.len() == region.ranges().len() {
5734 selections
5735 .iter()
5736 .zip(region.ranges().iter().map(|r| r.to_offset(&buffer)))
5737 .all(|(selection, invalidation_range)| {
5738 let head = selection.head().to_offset(&buffer);
5739 invalidation_range.start <= head && invalidation_range.end >= head
5740 })
5741 } else {
5742 false
5743 };
5744
5745 if all_selections_inside_invalidation_ranges {
5746 break;
5747 } else {
5748 self.pop();
5749 }
5750 }
5751 }
5752}
5753
5754impl<T> Default for InvalidationStack<T> {
5755 fn default() -> Self {
5756 Self(Default::default())
5757 }
5758}
5759
5760impl<T> Deref for InvalidationStack<T> {
5761 type Target = Vec<T>;
5762
5763 fn deref(&self) -> &Self::Target {
5764 &self.0
5765 }
5766}
5767
5768impl<T> DerefMut for InvalidationStack<T> {
5769 fn deref_mut(&mut self) -> &mut Self::Target {
5770 &mut self.0
5771 }
5772}
5773
5774impl InvalidationRegion for BracketPairState {
5775 fn ranges(&self) -> &[Range<Anchor>] {
5776 &self.ranges
5777 }
5778}
5779
5780impl InvalidationRegion for SnippetState {
5781 fn ranges(&self) -> &[Range<Anchor>] {
5782 &self.ranges[self.active_index]
5783 }
5784}
5785
5786impl Deref for EditorStyle {
5787 type Target = theme::Editor;
5788
5789 fn deref(&self) -> &Self::Target {
5790 &self.theme
5791 }
5792}
5793
5794pub fn diagnostic_block_renderer(
5795 diagnostic: Diagnostic,
5796 is_valid: bool,
5797 settings: watch::Receiver<Settings>,
5798) -> RenderBlock {
5799 let mut highlighted_lines = Vec::new();
5800 for line in diagnostic.message.lines() {
5801 highlighted_lines.push(highlight_diagnostic_message(line));
5802 }
5803
5804 Arc::new(move |cx: &BlockContext| {
5805 let settings = settings.borrow();
5806 let theme = &settings.theme.editor;
5807 let style = diagnostic_style(diagnostic.severity, is_valid, theme);
5808 let font_size = (style.text_scale_factor * settings.buffer_font_size).round();
5809 Flex::column()
5810 .with_children(highlighted_lines.iter().map(|(line, highlights)| {
5811 Label::new(
5812 line.clone(),
5813 style.message.clone().with_font_size(font_size),
5814 )
5815 .with_highlights(highlights.clone())
5816 .contained()
5817 .with_margin_left(cx.anchor_x)
5818 .boxed()
5819 }))
5820 .aligned()
5821 .left()
5822 .boxed()
5823 })
5824}
5825
5826pub fn highlight_diagnostic_message(message: &str) -> (String, Vec<usize>) {
5827 let mut message_without_backticks = String::new();
5828 let mut prev_offset = 0;
5829 let mut inside_block = false;
5830 let mut highlights = Vec::new();
5831 for (match_ix, (offset, _)) in message
5832 .match_indices('`')
5833 .chain([(message.len(), "")])
5834 .enumerate()
5835 {
5836 message_without_backticks.push_str(&message[prev_offset..offset]);
5837 if inside_block {
5838 highlights.extend(prev_offset - match_ix..offset - match_ix);
5839 }
5840
5841 inside_block = !inside_block;
5842 prev_offset = offset + 1;
5843 }
5844
5845 (message_without_backticks, highlights)
5846}
5847
5848pub fn diagnostic_style(
5849 severity: DiagnosticSeverity,
5850 valid: bool,
5851 theme: &theme::Editor,
5852) -> DiagnosticStyle {
5853 match (severity, valid) {
5854 (DiagnosticSeverity::ERROR, true) => theme.error_diagnostic.clone(),
5855 (DiagnosticSeverity::ERROR, false) => theme.invalid_error_diagnostic.clone(),
5856 (DiagnosticSeverity::WARNING, true) => theme.warning_diagnostic.clone(),
5857 (DiagnosticSeverity::WARNING, false) => theme.invalid_warning_diagnostic.clone(),
5858 (DiagnosticSeverity::INFORMATION, true) => theme.information_diagnostic.clone(),
5859 (DiagnosticSeverity::INFORMATION, false) => theme.invalid_information_diagnostic.clone(),
5860 (DiagnosticSeverity::HINT, true) => theme.hint_diagnostic.clone(),
5861 (DiagnosticSeverity::HINT, false) => theme.invalid_hint_diagnostic.clone(),
5862 _ => theme.invalid_hint_diagnostic.clone(),
5863 }
5864}
5865
5866pub fn combine_syntax_and_fuzzy_match_highlights(
5867 text: &str,
5868 default_style: HighlightStyle,
5869 syntax_ranges: impl Iterator<Item = (Range<usize>, HighlightStyle)>,
5870 match_indices: &[usize],
5871) -> Vec<(Range<usize>, HighlightStyle)> {
5872 let mut result = Vec::new();
5873 let mut match_indices = match_indices.iter().copied().peekable();
5874
5875 for (range, mut syntax_highlight) in syntax_ranges.chain([(usize::MAX..0, Default::default())])
5876 {
5877 syntax_highlight.font_properties.weight(Default::default());
5878
5879 // Add highlights for any fuzzy match characters before the next
5880 // syntax highlight range.
5881 while let Some(&match_index) = match_indices.peek() {
5882 if match_index >= range.start {
5883 break;
5884 }
5885 match_indices.next();
5886 let end_index = char_ix_after(match_index, text);
5887 let mut match_style = default_style;
5888 match_style.font_properties.weight(fonts::Weight::BOLD);
5889 result.push((match_index..end_index, match_style));
5890 }
5891
5892 if range.start == usize::MAX {
5893 break;
5894 }
5895
5896 // Add highlights for any fuzzy match characters within the
5897 // syntax highlight range.
5898 let mut offset = range.start;
5899 while let Some(&match_index) = match_indices.peek() {
5900 if match_index >= range.end {
5901 break;
5902 }
5903
5904 match_indices.next();
5905 if match_index > offset {
5906 result.push((offset..match_index, syntax_highlight));
5907 }
5908
5909 let mut end_index = char_ix_after(match_index, text);
5910 while let Some(&next_match_index) = match_indices.peek() {
5911 if next_match_index == end_index && next_match_index < range.end {
5912 end_index = char_ix_after(next_match_index, text);
5913 match_indices.next();
5914 } else {
5915 break;
5916 }
5917 }
5918
5919 let mut match_style = syntax_highlight;
5920 match_style.font_properties.weight(fonts::Weight::BOLD);
5921 result.push((match_index..end_index, match_style));
5922 offset = end_index;
5923 }
5924
5925 if offset < range.end {
5926 result.push((offset..range.end, syntax_highlight));
5927 }
5928 }
5929
5930 fn char_ix_after(ix: usize, text: &str) -> usize {
5931 ix + text[ix..].chars().next().unwrap().len_utf8()
5932 }
5933
5934 result
5935}
5936
5937pub fn styled_runs_for_code_label<'a>(
5938 label: &'a CodeLabel,
5939 default_color: Color,
5940 syntax_theme: &'a theme::SyntaxTheme,
5941) -> impl 'a + Iterator<Item = (Range<usize>, HighlightStyle)> {
5942 const MUTED_OPACITY: usize = 165;
5943
5944 let mut muted_default_style = HighlightStyle {
5945 color: default_color,
5946 ..Default::default()
5947 };
5948 muted_default_style.color.a = ((default_color.a as usize * MUTED_OPACITY) / 255) as u8;
5949
5950 let mut prev_end = label.filter_range.end;
5951 label
5952 .runs
5953 .iter()
5954 .enumerate()
5955 .flat_map(move |(ix, (range, highlight_id))| {
5956 let style = if let Some(style) = highlight_id.style(syntax_theme) {
5957 style
5958 } else {
5959 return Default::default();
5960 };
5961 let mut muted_style = style.clone();
5962 muted_style.color.a = ((style.color.a as usize * MUTED_OPACITY) / 255) as u8;
5963
5964 let mut runs = SmallVec::<[(Range<usize>, HighlightStyle); 3]>::new();
5965 if range.start >= label.filter_range.end {
5966 if range.start > prev_end {
5967 runs.push((prev_end..range.start, muted_default_style));
5968 }
5969 runs.push((range.clone(), muted_style));
5970 } else if range.end <= label.filter_range.end {
5971 runs.push((range.clone(), style));
5972 } else {
5973 runs.push((range.start..label.filter_range.end, style));
5974 runs.push((label.filter_range.end..range.end, muted_style));
5975 }
5976 prev_end = cmp::max(prev_end, range.end);
5977
5978 if ix + 1 == label.runs.len() && label.text.len() > prev_end {
5979 runs.push((prev_end..label.text.len(), muted_default_style));
5980 }
5981
5982 runs
5983 })
5984}
5985
5986#[cfg(test)]
5987mod tests {
5988 use super::*;
5989 use language::{LanguageConfig, LanguageServerConfig};
5990 use lsp::FakeLanguageServer;
5991 use project::FakeFs;
5992 use smol::stream::StreamExt;
5993 use std::{cell::RefCell, rc::Rc, time::Instant};
5994 use text::Point;
5995 use unindent::Unindent;
5996 use util::test::sample_text;
5997
5998 #[gpui::test]
5999 fn test_undo_redo_with_selection_restoration(cx: &mut MutableAppContext) {
6000 let mut now = Instant::now();
6001 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
6002 let group_interval = buffer.read(cx).transaction_group_interval();
6003 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6004 let settings = Settings::test(cx);
6005 let (_, editor) = cx.add_window(Default::default(), |cx| {
6006 build_editor(buffer.clone(), settings, cx)
6007 });
6008
6009 editor.update(cx, |editor, cx| {
6010 editor.start_transaction_at(now, cx);
6011 editor.select_ranges([2..4], None, cx);
6012 editor.insert("cd", cx);
6013 editor.end_transaction_at(now, cx);
6014 assert_eq!(editor.text(cx), "12cd56");
6015 assert_eq!(editor.selected_ranges(cx), vec![4..4]);
6016
6017 editor.start_transaction_at(now, cx);
6018 editor.select_ranges([4..5], None, cx);
6019 editor.insert("e", cx);
6020 editor.end_transaction_at(now, cx);
6021 assert_eq!(editor.text(cx), "12cde6");
6022 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
6023
6024 now += group_interval + Duration::from_millis(1);
6025 editor.select_ranges([2..2], None, cx);
6026
6027 // Simulate an edit in another editor
6028 buffer.update(cx, |buffer, cx| {
6029 buffer.start_transaction_at(now, cx);
6030 buffer.edit([0..1], "a", cx);
6031 buffer.edit([1..1], "b", cx);
6032 buffer.end_transaction_at(now, cx);
6033 });
6034
6035 assert_eq!(editor.text(cx), "ab2cde6");
6036 assert_eq!(editor.selected_ranges(cx), vec![3..3]);
6037
6038 // Last transaction happened past the group interval in a different editor.
6039 // Undo it individually and don't restore selections.
6040 editor.undo(&Undo, cx);
6041 assert_eq!(editor.text(cx), "12cde6");
6042 assert_eq!(editor.selected_ranges(cx), vec![2..2]);
6043
6044 // First two transactions happened within the group interval in this editor.
6045 // Undo them together and restore selections.
6046 editor.undo(&Undo, cx);
6047 editor.undo(&Undo, cx); // Undo stack is empty here, so this is a no-op.
6048 assert_eq!(editor.text(cx), "123456");
6049 assert_eq!(editor.selected_ranges(cx), vec![0..0]);
6050
6051 // Redo the first two transactions together.
6052 editor.redo(&Redo, cx);
6053 assert_eq!(editor.text(cx), "12cde6");
6054 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
6055
6056 // Redo the last transaction on its own.
6057 editor.redo(&Redo, cx);
6058 assert_eq!(editor.text(cx), "ab2cde6");
6059 assert_eq!(editor.selected_ranges(cx), vec![6..6]);
6060
6061 // Test empty transactions.
6062 editor.start_transaction_at(now, cx);
6063 editor.end_transaction_at(now, cx);
6064 editor.undo(&Undo, cx);
6065 assert_eq!(editor.text(cx), "12cde6");
6066 });
6067 }
6068
6069 #[gpui::test]
6070 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
6071 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6072 let settings = Settings::test(cx);
6073 let (_, editor) =
6074 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6075
6076 editor.update(cx, |view, cx| {
6077 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
6078 });
6079
6080 assert_eq!(
6081 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6082 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
6083 );
6084
6085 editor.update(cx, |view, cx| {
6086 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6087 });
6088
6089 assert_eq!(
6090 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6091 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6092 );
6093
6094 editor.update(cx, |view, cx| {
6095 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6096 });
6097
6098 assert_eq!(
6099 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6100 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
6101 );
6102
6103 editor.update(cx, |view, cx| {
6104 view.end_selection(cx);
6105 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6106 });
6107
6108 assert_eq!(
6109 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6110 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
6111 );
6112
6113 editor.update(cx, |view, cx| {
6114 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
6115 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
6116 });
6117
6118 assert_eq!(
6119 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6120 [
6121 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
6122 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
6123 ]
6124 );
6125
6126 editor.update(cx, |view, cx| {
6127 view.end_selection(cx);
6128 });
6129
6130 assert_eq!(
6131 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6132 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
6133 );
6134 }
6135
6136 #[gpui::test]
6137 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
6138 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6139 let settings = Settings::test(cx);
6140 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6141
6142 view.update(cx, |view, cx| {
6143 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
6144 assert_eq!(
6145 view.selected_display_ranges(cx),
6146 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
6147 );
6148 });
6149
6150 view.update(cx, |view, cx| {
6151 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6152 assert_eq!(
6153 view.selected_display_ranges(cx),
6154 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6155 );
6156 });
6157
6158 view.update(cx, |view, cx| {
6159 view.cancel(&Cancel, cx);
6160 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6161 assert_eq!(
6162 view.selected_display_ranges(cx),
6163 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6164 );
6165 });
6166 }
6167
6168 #[gpui::test]
6169 fn test_navigation_history(cx: &mut gpui::MutableAppContext) {
6170 cx.add_window(Default::default(), |cx| {
6171 use workspace::ItemView;
6172 let nav_history = Rc::new(RefCell::new(workspace::NavHistory::default()));
6173 let settings = Settings::test(&cx);
6174 let buffer = MultiBuffer::build_simple(&sample_text(30, 5, 'a'), cx);
6175 let mut editor = build_editor(buffer.clone(), settings, cx);
6176 editor.nav_history = Some(ItemNavHistory::new(nav_history.clone(), &cx.handle()));
6177
6178 // Move the cursor a small distance.
6179 // Nothing is added to the navigation history.
6180 editor.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
6181 editor.select_display_ranges(&[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)], cx);
6182 assert!(nav_history.borrow_mut().pop_backward().is_none());
6183
6184 // Move the cursor a large distance.
6185 // The history can jump back to the previous position.
6186 editor.select_display_ranges(&[DisplayPoint::new(13, 0)..DisplayPoint::new(13, 3)], cx);
6187 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
6188 editor.navigate(nav_entry.data.unwrap(), cx);
6189 assert_eq!(nav_entry.item_view.id(), cx.view_id());
6190 assert_eq!(
6191 editor.selected_display_ranges(cx),
6192 &[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)]
6193 );
6194
6195 // Move the cursor a small distance via the mouse.
6196 // Nothing is added to the navigation history.
6197 editor.begin_selection(DisplayPoint::new(5, 0), false, 1, cx);
6198 editor.end_selection(cx);
6199 assert_eq!(
6200 editor.selected_display_ranges(cx),
6201 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
6202 );
6203 assert!(nav_history.borrow_mut().pop_backward().is_none());
6204
6205 // Move the cursor a large distance via the mouse.
6206 // The history can jump back to the previous position.
6207 editor.begin_selection(DisplayPoint::new(15, 0), false, 1, cx);
6208 editor.end_selection(cx);
6209 assert_eq!(
6210 editor.selected_display_ranges(cx),
6211 &[DisplayPoint::new(15, 0)..DisplayPoint::new(15, 0)]
6212 );
6213 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
6214 editor.navigate(nav_entry.data.unwrap(), cx);
6215 assert_eq!(nav_entry.item_view.id(), cx.view_id());
6216 assert_eq!(
6217 editor.selected_display_ranges(cx),
6218 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
6219 );
6220
6221 editor
6222 });
6223 }
6224
6225 #[gpui::test]
6226 fn test_cancel(cx: &mut gpui::MutableAppContext) {
6227 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6228 let settings = Settings::test(cx);
6229 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6230
6231 view.update(cx, |view, cx| {
6232 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
6233 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6234 view.end_selection(cx);
6235
6236 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
6237 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
6238 view.end_selection(cx);
6239 assert_eq!(
6240 view.selected_display_ranges(cx),
6241 [
6242 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
6243 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
6244 ]
6245 );
6246 });
6247
6248 view.update(cx, |view, cx| {
6249 view.cancel(&Cancel, cx);
6250 assert_eq!(
6251 view.selected_display_ranges(cx),
6252 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
6253 );
6254 });
6255
6256 view.update(cx, |view, cx| {
6257 view.cancel(&Cancel, cx);
6258 assert_eq!(
6259 view.selected_display_ranges(cx),
6260 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
6261 );
6262 });
6263 }
6264
6265 #[gpui::test]
6266 fn test_fold(cx: &mut gpui::MutableAppContext) {
6267 let buffer = MultiBuffer::build_simple(
6268 &"
6269 impl Foo {
6270 // Hello!
6271
6272 fn a() {
6273 1
6274 }
6275
6276 fn b() {
6277 2
6278 }
6279
6280 fn c() {
6281 3
6282 }
6283 }
6284 "
6285 .unindent(),
6286 cx,
6287 );
6288 let settings = Settings::test(&cx);
6289 let (_, view) = cx.add_window(Default::default(), |cx| {
6290 build_editor(buffer.clone(), settings, cx)
6291 });
6292
6293 view.update(cx, |view, cx| {
6294 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx);
6295 view.fold(&Fold, cx);
6296 assert_eq!(
6297 view.display_text(cx),
6298 "
6299 impl Foo {
6300 // Hello!
6301
6302 fn a() {
6303 1
6304 }
6305
6306 fn b() {…
6307 }
6308
6309 fn c() {…
6310 }
6311 }
6312 "
6313 .unindent(),
6314 );
6315
6316 view.fold(&Fold, cx);
6317 assert_eq!(
6318 view.display_text(cx),
6319 "
6320 impl Foo {…
6321 }
6322 "
6323 .unindent(),
6324 );
6325
6326 view.unfold(&Unfold, cx);
6327 assert_eq!(
6328 view.display_text(cx),
6329 "
6330 impl Foo {
6331 // Hello!
6332
6333 fn a() {
6334 1
6335 }
6336
6337 fn b() {…
6338 }
6339
6340 fn c() {…
6341 }
6342 }
6343 "
6344 .unindent(),
6345 );
6346
6347 view.unfold(&Unfold, cx);
6348 assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text());
6349 });
6350 }
6351
6352 #[gpui::test]
6353 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
6354 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
6355 let settings = Settings::test(&cx);
6356 let (_, view) = cx.add_window(Default::default(), |cx| {
6357 build_editor(buffer.clone(), settings, cx)
6358 });
6359
6360 buffer.update(cx, |buffer, cx| {
6361 buffer.edit(
6362 vec![
6363 Point::new(1, 0)..Point::new(1, 0),
6364 Point::new(1, 1)..Point::new(1, 1),
6365 ],
6366 "\t",
6367 cx,
6368 );
6369 });
6370
6371 view.update(cx, |view, cx| {
6372 assert_eq!(
6373 view.selected_display_ranges(cx),
6374 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6375 );
6376
6377 view.move_down(&MoveDown, cx);
6378 assert_eq!(
6379 view.selected_display_ranges(cx),
6380 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6381 );
6382
6383 view.move_right(&MoveRight, cx);
6384 assert_eq!(
6385 view.selected_display_ranges(cx),
6386 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
6387 );
6388
6389 view.move_left(&MoveLeft, cx);
6390 assert_eq!(
6391 view.selected_display_ranges(cx),
6392 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6393 );
6394
6395 view.move_up(&MoveUp, cx);
6396 assert_eq!(
6397 view.selected_display_ranges(cx),
6398 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6399 );
6400
6401 view.move_to_end(&MoveToEnd, cx);
6402 assert_eq!(
6403 view.selected_display_ranges(cx),
6404 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
6405 );
6406
6407 view.move_to_beginning(&MoveToBeginning, cx);
6408 assert_eq!(
6409 view.selected_display_ranges(cx),
6410 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6411 );
6412
6413 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx);
6414 view.select_to_beginning(&SelectToBeginning, cx);
6415 assert_eq!(
6416 view.selected_display_ranges(cx),
6417 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
6418 );
6419
6420 view.select_to_end(&SelectToEnd, cx);
6421 assert_eq!(
6422 view.selected_display_ranges(cx),
6423 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
6424 );
6425 });
6426 }
6427
6428 #[gpui::test]
6429 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
6430 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
6431 let settings = Settings::test(&cx);
6432 let (_, view) = cx.add_window(Default::default(), |cx| {
6433 build_editor(buffer.clone(), settings, cx)
6434 });
6435
6436 assert_eq!('ⓐ'.len_utf8(), 3);
6437 assert_eq!('α'.len_utf8(), 2);
6438
6439 view.update(cx, |view, cx| {
6440 view.fold_ranges(
6441 vec![
6442 Point::new(0, 6)..Point::new(0, 12),
6443 Point::new(1, 2)..Point::new(1, 4),
6444 Point::new(2, 4)..Point::new(2, 8),
6445 ],
6446 cx,
6447 );
6448 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
6449
6450 view.move_right(&MoveRight, cx);
6451 assert_eq!(
6452 view.selected_display_ranges(cx),
6453 &[empty_range(0, "ⓐ".len())]
6454 );
6455 view.move_right(&MoveRight, cx);
6456 assert_eq!(
6457 view.selected_display_ranges(cx),
6458 &[empty_range(0, "ⓐⓑ".len())]
6459 );
6460 view.move_right(&MoveRight, cx);
6461 assert_eq!(
6462 view.selected_display_ranges(cx),
6463 &[empty_range(0, "ⓐⓑ…".len())]
6464 );
6465
6466 view.move_down(&MoveDown, cx);
6467 assert_eq!(
6468 view.selected_display_ranges(cx),
6469 &[empty_range(1, "ab…".len())]
6470 );
6471 view.move_left(&MoveLeft, cx);
6472 assert_eq!(
6473 view.selected_display_ranges(cx),
6474 &[empty_range(1, "ab".len())]
6475 );
6476 view.move_left(&MoveLeft, cx);
6477 assert_eq!(
6478 view.selected_display_ranges(cx),
6479 &[empty_range(1, "a".len())]
6480 );
6481
6482 view.move_down(&MoveDown, cx);
6483 assert_eq!(
6484 view.selected_display_ranges(cx),
6485 &[empty_range(2, "α".len())]
6486 );
6487 view.move_right(&MoveRight, cx);
6488 assert_eq!(
6489 view.selected_display_ranges(cx),
6490 &[empty_range(2, "αβ".len())]
6491 );
6492 view.move_right(&MoveRight, cx);
6493 assert_eq!(
6494 view.selected_display_ranges(cx),
6495 &[empty_range(2, "αβ…".len())]
6496 );
6497 view.move_right(&MoveRight, cx);
6498 assert_eq!(
6499 view.selected_display_ranges(cx),
6500 &[empty_range(2, "αβ…ε".len())]
6501 );
6502
6503 view.move_up(&MoveUp, cx);
6504 assert_eq!(
6505 view.selected_display_ranges(cx),
6506 &[empty_range(1, "ab…e".len())]
6507 );
6508 view.move_up(&MoveUp, cx);
6509 assert_eq!(
6510 view.selected_display_ranges(cx),
6511 &[empty_range(0, "ⓐⓑ…ⓔ".len())]
6512 );
6513 view.move_left(&MoveLeft, cx);
6514 assert_eq!(
6515 view.selected_display_ranges(cx),
6516 &[empty_range(0, "ⓐⓑ…".len())]
6517 );
6518 view.move_left(&MoveLeft, cx);
6519 assert_eq!(
6520 view.selected_display_ranges(cx),
6521 &[empty_range(0, "ⓐⓑ".len())]
6522 );
6523 view.move_left(&MoveLeft, cx);
6524 assert_eq!(
6525 view.selected_display_ranges(cx),
6526 &[empty_range(0, "ⓐ".len())]
6527 );
6528 });
6529 }
6530
6531 #[gpui::test]
6532 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
6533 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
6534 let settings = Settings::test(&cx);
6535 let (_, view) = cx.add_window(Default::default(), |cx| {
6536 build_editor(buffer.clone(), settings, cx)
6537 });
6538 view.update(cx, |view, cx| {
6539 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx);
6540 view.move_down(&MoveDown, cx);
6541 assert_eq!(
6542 view.selected_display_ranges(cx),
6543 &[empty_range(1, "abcd".len())]
6544 );
6545
6546 view.move_down(&MoveDown, cx);
6547 assert_eq!(
6548 view.selected_display_ranges(cx),
6549 &[empty_range(2, "αβγ".len())]
6550 );
6551
6552 view.move_down(&MoveDown, cx);
6553 assert_eq!(
6554 view.selected_display_ranges(cx),
6555 &[empty_range(3, "abcd".len())]
6556 );
6557
6558 view.move_down(&MoveDown, cx);
6559 assert_eq!(
6560 view.selected_display_ranges(cx),
6561 &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
6562 );
6563
6564 view.move_up(&MoveUp, cx);
6565 assert_eq!(
6566 view.selected_display_ranges(cx),
6567 &[empty_range(3, "abcd".len())]
6568 );
6569
6570 view.move_up(&MoveUp, cx);
6571 assert_eq!(
6572 view.selected_display_ranges(cx),
6573 &[empty_range(2, "αβγ".len())]
6574 );
6575 });
6576 }
6577
6578 #[gpui::test]
6579 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
6580 let buffer = MultiBuffer::build_simple("abc\n def", cx);
6581 let settings = Settings::test(&cx);
6582 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6583 view.update(cx, |view, cx| {
6584 view.select_display_ranges(
6585 &[
6586 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6587 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
6588 ],
6589 cx,
6590 );
6591 });
6592
6593 view.update(cx, |view, cx| {
6594 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6595 assert_eq!(
6596 view.selected_display_ranges(cx),
6597 &[
6598 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6599 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6600 ]
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, 0)..DisplayPoint::new(1, 0),
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, 2)..DisplayPoint::new(1, 2),
6622 ]
6623 );
6624 });
6625
6626 view.update(cx, |view, cx| {
6627 view.move_to_end_of_line(&MoveToEndOfLine, cx);
6628 assert_eq!(
6629 view.selected_display_ranges(cx),
6630 &[
6631 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6632 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6633 ]
6634 );
6635 });
6636
6637 // Moving to the end of line again is a no-op.
6638 view.update(cx, |view, cx| {
6639 view.move_to_end_of_line(&MoveToEndOfLine, cx);
6640 assert_eq!(
6641 view.selected_display_ranges(cx),
6642 &[
6643 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6644 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6645 ]
6646 );
6647 });
6648
6649 view.update(cx, |view, cx| {
6650 view.move_left(&MoveLeft, cx);
6651 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6652 assert_eq!(
6653 view.selected_display_ranges(cx),
6654 &[
6655 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6656 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
6657 ]
6658 );
6659 });
6660
6661 view.update(cx, |view, 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, 0),
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, 2),
6679 ]
6680 );
6681 });
6682
6683 view.update(cx, |view, cx| {
6684 view.select_to_end_of_line(&SelectToEndOfLine(true), cx);
6685 assert_eq!(
6686 view.selected_display_ranges(cx),
6687 &[
6688 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
6689 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
6690 ]
6691 );
6692 });
6693
6694 view.update(cx, |view, cx| {
6695 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
6696 assert_eq!(view.display_text(cx), "ab\n de");
6697 assert_eq!(
6698 view.selected_display_ranges(cx),
6699 &[
6700 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6701 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
6702 ]
6703 );
6704 });
6705
6706 view.update(cx, |view, cx| {
6707 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
6708 assert_eq!(view.display_text(cx), "\n");
6709 assert_eq!(
6710 view.selected_display_ranges(cx),
6711 &[
6712 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6713 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6714 ]
6715 );
6716 });
6717 }
6718
6719 #[gpui::test]
6720 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
6721 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
6722 let settings = Settings::test(&cx);
6723 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6724 view.update(cx, |view, cx| {
6725 view.select_display_ranges(
6726 &[
6727 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
6728 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
6729 ],
6730 cx,
6731 );
6732 });
6733
6734 view.update(cx, |view, cx| {
6735 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6736 assert_eq!(
6737 view.selected_display_ranges(cx),
6738 &[
6739 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
6740 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
6741 ]
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, 7)..DisplayPoint::new(0, 7),
6751 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2),
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, 4)..DisplayPoint::new(0, 4),
6762 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
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, 0)..DisplayPoint::new(0, 0),
6773 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 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(0, 23)..DisplayPoint::new(0, 23),
6785 ]
6786 );
6787 });
6788
6789 view.update(cx, |view, cx| {
6790 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6791 assert_eq!(
6792 view.selected_display_ranges(cx),
6793 &[
6794 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6795 DisplayPoint::new(0, 24)..DisplayPoint::new(0, 24),
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, 7)..DisplayPoint::new(0, 7),
6806 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
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, 9)..DisplayPoint::new(0, 9),
6817 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
6818 ]
6819 );
6820 });
6821
6822 view.update(cx, |view, cx| {
6823 view.move_right(&MoveRight, cx);
6824 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
6825 assert_eq!(
6826 view.selected_display_ranges(cx),
6827 &[
6828 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
6829 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
6830 ]
6831 );
6832 });
6833
6834 view.update(cx, |view, 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, 7),
6840 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 2),
6841 ]
6842 );
6843 });
6844
6845 view.update(cx, |view, cx| {
6846 view.select_to_next_word_boundary(&SelectToNextWordBoundary, cx);
6847 assert_eq!(
6848 view.selected_display_ranges(cx),
6849 &[
6850 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
6851 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
6852 ]
6853 );
6854 });
6855 }
6856
6857 #[gpui::test]
6858 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
6859 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
6860 let settings = Settings::test(&cx);
6861 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6862
6863 view.update(cx, |view, cx| {
6864 view.set_wrap_width(Some(140.), cx);
6865 assert_eq!(
6866 view.display_text(cx),
6867 "use one::{\n two::three::\n four::five\n};"
6868 );
6869
6870 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx);
6871
6872 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6873 assert_eq!(
6874 view.selected_display_ranges(cx),
6875 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
6876 );
6877
6878 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6879 assert_eq!(
6880 view.selected_display_ranges(cx),
6881 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
6882 );
6883
6884 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6885 assert_eq!(
6886 view.selected_display_ranges(cx),
6887 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
6888 );
6889
6890 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6891 assert_eq!(
6892 view.selected_display_ranges(cx),
6893 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
6894 );
6895
6896 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6897 assert_eq!(
6898 view.selected_display_ranges(cx),
6899 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
6900 );
6901
6902 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6903 assert_eq!(
6904 view.selected_display_ranges(cx),
6905 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
6906 );
6907 });
6908 }
6909
6910 #[gpui::test]
6911 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
6912 let buffer = MultiBuffer::build_simple("one two three four", cx);
6913 let settings = Settings::test(&cx);
6914 let (_, view) = cx.add_window(Default::default(), |cx| {
6915 build_editor(buffer.clone(), settings, cx)
6916 });
6917
6918 view.update(cx, |view, cx| {
6919 view.select_display_ranges(
6920 &[
6921 // an empty selection - the preceding word fragment is deleted
6922 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6923 // characters selected - they are deleted
6924 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
6925 ],
6926 cx,
6927 );
6928 view.delete_to_previous_word_boundary(&DeleteToPreviousWordBoundary, cx);
6929 });
6930
6931 assert_eq!(buffer.read(cx).read(cx).text(), "e two te four");
6932
6933 view.update(cx, |view, cx| {
6934 view.select_display_ranges(
6935 &[
6936 // an empty selection - the following word fragment is deleted
6937 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6938 // characters selected - they are deleted
6939 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
6940 ],
6941 cx,
6942 );
6943 view.delete_to_next_word_boundary(&DeleteToNextWordBoundary, cx);
6944 });
6945
6946 assert_eq!(buffer.read(cx).read(cx).text(), "e t te our");
6947 }
6948
6949 #[gpui::test]
6950 fn test_newline(cx: &mut gpui::MutableAppContext) {
6951 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
6952 let settings = Settings::test(&cx);
6953 let (_, view) = cx.add_window(Default::default(), |cx| {
6954 build_editor(buffer.clone(), settings, cx)
6955 });
6956
6957 view.update(cx, |view, cx| {
6958 view.select_display_ranges(
6959 &[
6960 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6961 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6962 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
6963 ],
6964 cx,
6965 );
6966
6967 view.newline(&Newline, cx);
6968 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
6969 });
6970 }
6971
6972 #[gpui::test]
6973 fn test_newline_with_old_selections(cx: &mut gpui::MutableAppContext) {
6974 let buffer = MultiBuffer::build_simple(
6975 "
6976 a
6977 b(
6978 X
6979 )
6980 c(
6981 X
6982 )
6983 "
6984 .unindent()
6985 .as_str(),
6986 cx,
6987 );
6988
6989 let settings = Settings::test(&cx);
6990 let (_, editor) = cx.add_window(Default::default(), |cx| {
6991 let mut editor = build_editor(buffer.clone(), settings, cx);
6992 editor.select_ranges(
6993 [
6994 Point::new(2, 4)..Point::new(2, 5),
6995 Point::new(5, 4)..Point::new(5, 5),
6996 ],
6997 None,
6998 cx,
6999 );
7000 editor
7001 });
7002
7003 // Edit the buffer directly, deleting ranges surrounding the editor's selections
7004 buffer.update(cx, |buffer, cx| {
7005 buffer.edit(
7006 [
7007 Point::new(1, 2)..Point::new(3, 0),
7008 Point::new(4, 2)..Point::new(6, 0),
7009 ],
7010 "",
7011 cx,
7012 );
7013 assert_eq!(
7014 buffer.read(cx).text(),
7015 "
7016 a
7017 b()
7018 c()
7019 "
7020 .unindent()
7021 );
7022 });
7023
7024 editor.update(cx, |editor, cx| {
7025 assert_eq!(
7026 editor.selected_ranges(cx),
7027 &[
7028 Point::new(1, 2)..Point::new(1, 2),
7029 Point::new(2, 2)..Point::new(2, 2),
7030 ],
7031 );
7032
7033 editor.newline(&Newline, cx);
7034 assert_eq!(
7035 editor.text(cx),
7036 "
7037 a
7038 b(
7039 )
7040 c(
7041 )
7042 "
7043 .unindent()
7044 );
7045
7046 // The selections are moved after the inserted newlines
7047 assert_eq!(
7048 editor.selected_ranges(cx),
7049 &[
7050 Point::new(2, 0)..Point::new(2, 0),
7051 Point::new(4, 0)..Point::new(4, 0),
7052 ],
7053 );
7054 });
7055 }
7056
7057 #[gpui::test]
7058 fn test_insert_with_old_selections(cx: &mut gpui::MutableAppContext) {
7059 let buffer = MultiBuffer::build_simple("a( X ), b( Y ), c( Z )", cx);
7060
7061 let settings = Settings::test(&cx);
7062 let (_, editor) = cx.add_window(Default::default(), |cx| {
7063 let mut editor = build_editor(buffer.clone(), settings, cx);
7064 editor.select_ranges([3..4, 11..12, 19..20], None, cx);
7065 editor
7066 });
7067
7068 // Edit the buffer directly, deleting ranges surrounding the editor's selections
7069 buffer.update(cx, |buffer, cx| {
7070 buffer.edit([2..5, 10..13, 18..21], "", cx);
7071 assert_eq!(buffer.read(cx).text(), "a(), b(), c()".unindent());
7072 });
7073
7074 editor.update(cx, |editor, cx| {
7075 assert_eq!(editor.selected_ranges(cx), &[2..2, 7..7, 12..12],);
7076
7077 editor.insert("Z", cx);
7078 assert_eq!(editor.text(cx), "a(Z), b(Z), c(Z)");
7079
7080 // The selections are moved after the inserted characters
7081 assert_eq!(editor.selected_ranges(cx), &[3..3, 9..9, 15..15],);
7082 });
7083 }
7084
7085 #[gpui::test]
7086 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
7087 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
7088 let settings = Settings::test(&cx);
7089 let (_, view) = cx.add_window(Default::default(), |cx| {
7090 build_editor(buffer.clone(), settings, cx)
7091 });
7092
7093 view.update(cx, |view, cx| {
7094 // two selections on the same line
7095 view.select_display_ranges(
7096 &[
7097 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
7098 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
7099 ],
7100 cx,
7101 );
7102
7103 // indent from mid-tabstop to full tabstop
7104 view.tab(&Tab, cx);
7105 assert_eq!(view.text(cx), " one two\nthree\n four");
7106 assert_eq!(
7107 view.selected_display_ranges(cx),
7108 &[
7109 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
7110 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
7111 ]
7112 );
7113
7114 // outdent from 1 tabstop to 0 tabstops
7115 view.outdent(&Outdent, 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, 0)..DisplayPoint::new(0, 3),
7121 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
7122 ]
7123 );
7124
7125 // select across line ending
7126 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx);
7127
7128 // indent and outdent affect only the preceding line
7129 view.tab(&Tab, cx);
7130 assert_eq!(view.text(cx), "one two\n three\n four");
7131 assert_eq!(
7132 view.selected_display_ranges(cx),
7133 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
7134 );
7135 view.outdent(&Outdent, cx);
7136 assert_eq!(view.text(cx), "one two\nthree\n four");
7137 assert_eq!(
7138 view.selected_display_ranges(cx),
7139 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
7140 );
7141
7142 // Ensure that indenting/outdenting works when the cursor is at column 0.
7143 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
7144 view.tab(&Tab, cx);
7145 assert_eq!(view.text(cx), "one two\n three\n four");
7146 assert_eq!(
7147 view.selected_display_ranges(cx),
7148 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
7149 );
7150
7151 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
7152 view.outdent(&Outdent, cx);
7153 assert_eq!(view.text(cx), "one two\nthree\n four");
7154 assert_eq!(
7155 view.selected_display_ranges(cx),
7156 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
7157 );
7158 });
7159 }
7160
7161 #[gpui::test]
7162 fn test_backspace(cx: &mut gpui::MutableAppContext) {
7163 let buffer =
7164 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
7165 let settings = Settings::test(&cx);
7166 let (_, view) = cx.add_window(Default::default(), |cx| {
7167 build_editor(buffer.clone(), settings, cx)
7168 });
7169
7170 view.update(cx, |view, cx| {
7171 view.select_display_ranges(
7172 &[
7173 // an empty selection - the preceding character is deleted
7174 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7175 // one character selected - it is deleted
7176 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7177 // a line suffix selected - it is deleted
7178 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
7179 ],
7180 cx,
7181 );
7182 view.backspace(&Backspace, cx);
7183 });
7184
7185 assert_eq!(
7186 buffer.read(cx).read(cx).text(),
7187 "oe two three\nfou five six\nseven ten\n"
7188 );
7189 }
7190
7191 #[gpui::test]
7192 fn test_delete(cx: &mut gpui::MutableAppContext) {
7193 let buffer =
7194 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
7195 let settings = Settings::test(&cx);
7196 let (_, view) = cx.add_window(Default::default(), |cx| {
7197 build_editor(buffer.clone(), settings, cx)
7198 });
7199
7200 view.update(cx, |view, cx| {
7201 view.select_display_ranges(
7202 &[
7203 // an empty selection - the following character is deleted
7204 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7205 // one character selected - it is deleted
7206 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7207 // a line suffix selected - it is deleted
7208 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
7209 ],
7210 cx,
7211 );
7212 view.delete(&Delete, cx);
7213 });
7214
7215 assert_eq!(
7216 buffer.read(cx).read(cx).text(),
7217 "on two three\nfou five six\nseven ten\n"
7218 );
7219 }
7220
7221 #[gpui::test]
7222 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
7223 let settings = Settings::test(&cx);
7224 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7225 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7226 view.update(cx, |view, cx| {
7227 view.select_display_ranges(
7228 &[
7229 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7230 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
7231 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7232 ],
7233 cx,
7234 );
7235 view.delete_line(&DeleteLine, cx);
7236 assert_eq!(view.display_text(cx), "ghi");
7237 assert_eq!(
7238 view.selected_display_ranges(cx),
7239 vec![
7240 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7241 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
7242 ]
7243 );
7244 });
7245
7246 let settings = Settings::test(&cx);
7247 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7248 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7249 view.update(cx, |view, cx| {
7250 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx);
7251 view.delete_line(&DeleteLine, cx);
7252 assert_eq!(view.display_text(cx), "ghi\n");
7253 assert_eq!(
7254 view.selected_display_ranges(cx),
7255 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
7256 );
7257 });
7258 }
7259
7260 #[gpui::test]
7261 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
7262 let settings = Settings::test(&cx);
7263 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7264 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7265 view.update(cx, |view, cx| {
7266 view.select_display_ranges(
7267 &[
7268 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7269 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7270 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7271 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7272 ],
7273 cx,
7274 );
7275 view.duplicate_line(&DuplicateLine, cx);
7276 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
7277 assert_eq!(
7278 view.selected_display_ranges(cx),
7279 vec![
7280 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
7281 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7282 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7283 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
7284 ]
7285 );
7286 });
7287
7288 let settings = Settings::test(&cx);
7289 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7290 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7291 view.update(cx, |view, cx| {
7292 view.select_display_ranges(
7293 &[
7294 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
7295 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
7296 ],
7297 cx,
7298 );
7299 view.duplicate_line(&DuplicateLine, cx);
7300 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
7301 assert_eq!(
7302 view.selected_display_ranges(cx),
7303 vec![
7304 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
7305 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
7306 ]
7307 );
7308 });
7309 }
7310
7311 #[gpui::test]
7312 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
7313 let settings = Settings::test(&cx);
7314 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
7315 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7316 view.update(cx, |view, cx| {
7317 view.fold_ranges(
7318 vec![
7319 Point::new(0, 2)..Point::new(1, 2),
7320 Point::new(2, 3)..Point::new(4, 1),
7321 Point::new(7, 0)..Point::new(8, 4),
7322 ],
7323 cx,
7324 );
7325 view.select_display_ranges(
7326 &[
7327 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7328 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7329 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7330 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
7331 ],
7332 cx,
7333 );
7334 assert_eq!(
7335 view.display_text(cx),
7336 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
7337 );
7338
7339 view.move_line_up(&MoveLineUp, cx);
7340 assert_eq!(
7341 view.display_text(cx),
7342 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
7343 );
7344 assert_eq!(
7345 view.selected_display_ranges(cx),
7346 vec![
7347 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7348 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7349 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
7350 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
7351 ]
7352 );
7353 });
7354
7355 view.update(cx, |view, cx| {
7356 view.move_line_down(&MoveLineDown, cx);
7357 assert_eq!(
7358 view.display_text(cx),
7359 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
7360 );
7361 assert_eq!(
7362 view.selected_display_ranges(cx),
7363 vec![
7364 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7365 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7366 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7367 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
7368 ]
7369 );
7370 });
7371
7372 view.update(cx, |view, cx| {
7373 view.move_line_down(&MoveLineDown, cx);
7374 assert_eq!(
7375 view.display_text(cx),
7376 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
7377 );
7378 assert_eq!(
7379 view.selected_display_ranges(cx),
7380 vec![
7381 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7382 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7383 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7384 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
7385 ]
7386 );
7387 });
7388
7389 view.update(cx, |view, cx| {
7390 view.move_line_up(&MoveLineUp, cx);
7391 assert_eq!(
7392 view.display_text(cx),
7393 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
7394 );
7395 assert_eq!(
7396 view.selected_display_ranges(cx),
7397 vec![
7398 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7399 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7400 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
7401 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
7402 ]
7403 );
7404 });
7405 }
7406
7407 #[gpui::test]
7408 fn test_move_line_up_down_with_blocks(cx: &mut gpui::MutableAppContext) {
7409 let settings = Settings::test(&cx);
7410 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
7411 let snapshot = buffer.read(cx).snapshot(cx);
7412 let (_, editor) =
7413 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7414 editor.update(cx, |editor, cx| {
7415 editor.insert_blocks(
7416 [BlockProperties {
7417 position: snapshot.anchor_after(Point::new(2, 0)),
7418 disposition: BlockDisposition::Below,
7419 height: 1,
7420 render: Arc::new(|_| Empty::new().boxed()),
7421 }],
7422 cx,
7423 );
7424 editor.select_ranges([Point::new(2, 0)..Point::new(2, 0)], None, cx);
7425 editor.move_line_down(&MoveLineDown, cx);
7426 });
7427 }
7428
7429 #[gpui::test]
7430 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
7431 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
7432 let settings = Settings::test(&cx);
7433 let view = cx
7434 .add_window(Default::default(), |cx| {
7435 build_editor(buffer.clone(), settings, cx)
7436 })
7437 .1;
7438
7439 // Cut with three selections. Clipboard text is divided into three slices.
7440 view.update(cx, |view, cx| {
7441 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
7442 view.cut(&Cut, cx);
7443 assert_eq!(view.display_text(cx), "two four six ");
7444 });
7445
7446 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
7447 view.update(cx, |view, cx| {
7448 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
7449 view.paste(&Paste, cx);
7450 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
7451 assert_eq!(
7452 view.selected_display_ranges(cx),
7453 &[
7454 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
7455 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
7456 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
7457 ]
7458 );
7459 });
7460
7461 // Paste again but with only two cursors. Since the number of cursors doesn't
7462 // match the number of slices in the clipboard, the entire clipboard text
7463 // is pasted at each cursor.
7464 view.update(cx, |view, cx| {
7465 view.select_ranges(vec![0..0, 31..31], None, cx);
7466 view.handle_input(&Input("( ".into()), cx);
7467 view.paste(&Paste, cx);
7468 view.handle_input(&Input(") ".into()), cx);
7469 assert_eq!(
7470 view.display_text(cx),
7471 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7472 );
7473 });
7474
7475 view.update(cx, |view, cx| {
7476 view.select_ranges(vec![0..0], None, cx);
7477 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
7478 assert_eq!(
7479 view.display_text(cx),
7480 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7481 );
7482 });
7483
7484 // Cut with three selections, one of which is full-line.
7485 view.update(cx, |view, cx| {
7486 view.select_display_ranges(
7487 &[
7488 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
7489 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7490 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
7491 ],
7492 cx,
7493 );
7494 view.cut(&Cut, cx);
7495 assert_eq!(
7496 view.display_text(cx),
7497 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7498 );
7499 });
7500
7501 // Paste with three selections, noticing how the copied selection that was full-line
7502 // gets inserted before the second cursor.
7503 view.update(cx, |view, cx| {
7504 view.select_display_ranges(
7505 &[
7506 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7507 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7508 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
7509 ],
7510 cx,
7511 );
7512 view.paste(&Paste, cx);
7513 assert_eq!(
7514 view.display_text(cx),
7515 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
7516 );
7517 assert_eq!(
7518 view.selected_display_ranges(cx),
7519 &[
7520 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7521 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7522 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
7523 ]
7524 );
7525 });
7526
7527 // Copy with a single cursor only, which writes the whole line into the clipboard.
7528 view.update(cx, |view, cx| {
7529 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx);
7530 view.copy(&Copy, cx);
7531 });
7532
7533 // Paste with three selections, noticing how the copied full-line selection is inserted
7534 // before the empty selections but replaces the selection that is non-empty.
7535 view.update(cx, |view, cx| {
7536 view.select_display_ranges(
7537 &[
7538 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7539 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
7540 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7541 ],
7542 cx,
7543 );
7544 view.paste(&Paste, cx);
7545 assert_eq!(
7546 view.display_text(cx),
7547 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
7548 );
7549 assert_eq!(
7550 view.selected_display_ranges(cx),
7551 &[
7552 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7553 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7554 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
7555 ]
7556 );
7557 });
7558 }
7559
7560 #[gpui::test]
7561 fn test_select_all(cx: &mut gpui::MutableAppContext) {
7562 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
7563 let settings = Settings::test(&cx);
7564 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7565 view.update(cx, |view, cx| {
7566 view.select_all(&SelectAll, cx);
7567 assert_eq!(
7568 view.selected_display_ranges(cx),
7569 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
7570 );
7571 });
7572 }
7573
7574 #[gpui::test]
7575 fn test_select_line(cx: &mut gpui::MutableAppContext) {
7576 let settings = Settings::test(&cx);
7577 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
7578 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7579 view.update(cx, |view, cx| {
7580 view.select_display_ranges(
7581 &[
7582 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7583 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7584 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7585 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
7586 ],
7587 cx,
7588 );
7589 view.select_line(&SelectLine, cx);
7590 assert_eq!(
7591 view.selected_display_ranges(cx),
7592 vec![
7593 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
7594 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
7595 ]
7596 );
7597 });
7598
7599 view.update(cx, |view, cx| {
7600 view.select_line(&SelectLine, cx);
7601 assert_eq!(
7602 view.selected_display_ranges(cx),
7603 vec![
7604 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
7605 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
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![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
7615 );
7616 });
7617 }
7618
7619 #[gpui::test]
7620 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
7621 let settings = Settings::test(&cx);
7622 let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
7623 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7624 view.update(cx, |view, cx| {
7625 view.fold_ranges(
7626 vec![
7627 Point::new(0, 2)..Point::new(1, 2),
7628 Point::new(2, 3)..Point::new(4, 1),
7629 Point::new(7, 0)..Point::new(8, 4),
7630 ],
7631 cx,
7632 );
7633 view.select_display_ranges(
7634 &[
7635 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7636 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7637 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7638 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
7639 ],
7640 cx,
7641 );
7642 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
7643 });
7644
7645 view.update(cx, |view, cx| {
7646 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
7647 assert_eq!(
7648 view.display_text(cx),
7649 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
7650 );
7651 assert_eq!(
7652 view.selected_display_ranges(cx),
7653 [
7654 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7655 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7656 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
7657 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
7658 ]
7659 );
7660 });
7661
7662 view.update(cx, |view, cx| {
7663 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx);
7664 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
7665 assert_eq!(
7666 view.display_text(cx),
7667 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
7668 );
7669 assert_eq!(
7670 view.selected_display_ranges(cx),
7671 [
7672 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
7673 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
7674 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7675 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
7676 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
7677 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
7678 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
7679 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
7680 ]
7681 );
7682 });
7683 }
7684
7685 #[gpui::test]
7686 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
7687 let settings = Settings::test(&cx);
7688 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
7689 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7690
7691 view.update(cx, |view, cx| {
7692 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx);
7693 });
7694 view.update(cx, |view, cx| {
7695 view.add_selection_above(&AddSelectionAbove, cx);
7696 assert_eq!(
7697 view.selected_display_ranges(cx),
7698 vec![
7699 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7700 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
7701 ]
7702 );
7703 });
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_below(&AddSelectionBelow, cx);
7718 assert_eq!(
7719 view.selected_display_ranges(cx),
7720 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
7721 );
7722 });
7723
7724 view.update(cx, |view, cx| {
7725 view.add_selection_below(&AddSelectionBelow, cx);
7726 assert_eq!(
7727 view.selected_display_ranges(cx),
7728 vec![
7729 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7730 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
7731 ]
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.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx);
7748 });
7749 view.update(cx, |view, cx| {
7750 view.add_selection_below(&AddSelectionBelow, cx);
7751 assert_eq!(
7752 view.selected_display_ranges(cx),
7753 vec![
7754 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7755 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
7756 ]
7757 );
7758 });
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_above(&AddSelectionAbove, cx);
7773 assert_eq!(
7774 view.selected_display_ranges(cx),
7775 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
7776 );
7777 });
7778
7779 view.update(cx, |view, cx| {
7780 view.add_selection_above(&AddSelectionAbove, cx);
7781 assert_eq!(
7782 view.selected_display_ranges(cx),
7783 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
7784 );
7785 });
7786
7787 view.update(cx, |view, cx| {
7788 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx);
7789 view.add_selection_below(&AddSelectionBelow, cx);
7790 assert_eq!(
7791 view.selected_display_ranges(cx),
7792 vec![
7793 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7794 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7795 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7796 ]
7797 );
7798 });
7799
7800 view.update(cx, |view, cx| {
7801 view.add_selection_below(&AddSelectionBelow, cx);
7802 assert_eq!(
7803 view.selected_display_ranges(cx),
7804 vec![
7805 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7806 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7807 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7808 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
7809 ]
7810 );
7811 });
7812
7813 view.update(cx, |view, cx| {
7814 view.add_selection_above(&AddSelectionAbove, cx);
7815 assert_eq!(
7816 view.selected_display_ranges(cx),
7817 vec![
7818 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7819 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7820 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7821 ]
7822 );
7823 });
7824
7825 view.update(cx, |view, cx| {
7826 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx);
7827 });
7828 view.update(cx, |view, cx| {
7829 view.add_selection_above(&AddSelectionAbove, cx);
7830 assert_eq!(
7831 view.selected_display_ranges(cx),
7832 vec![
7833 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
7834 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
7835 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
7836 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
7837 ]
7838 );
7839 });
7840
7841 view.update(cx, |view, cx| {
7842 view.add_selection_below(&AddSelectionBelow, cx);
7843 assert_eq!(
7844 view.selected_display_ranges(cx),
7845 vec![
7846 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
7847 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
7848 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
7849 ]
7850 );
7851 });
7852 }
7853
7854 #[gpui::test]
7855 async fn test_select_larger_smaller_syntax_node(cx: &mut gpui::TestAppContext) {
7856 let settings = cx.read(Settings::test);
7857 let language = Arc::new(Language::new(
7858 LanguageConfig::default(),
7859 Some(tree_sitter_rust::language()),
7860 ));
7861
7862 let text = r#"
7863 use mod1::mod2::{mod3, mod4};
7864
7865 fn fn_1(param1: bool, param2: &str) {
7866 let var1 = "text";
7867 }
7868 "#
7869 .unindent();
7870
7871 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7872 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7873 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7874 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
7875 .await;
7876
7877 view.update(cx, |view, cx| {
7878 view.select_display_ranges(
7879 &[
7880 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7881 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7882 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7883 ],
7884 cx,
7885 );
7886 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7887 });
7888 assert_eq!(
7889 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7890 &[
7891 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
7892 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7893 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
7894 ]
7895 );
7896
7897 view.update(cx, |view, cx| {
7898 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7899 });
7900 assert_eq!(
7901 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7902 &[
7903 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
7904 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
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 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
7914 );
7915
7916 // Trying to expand the selected syntax node one more time has no effect.
7917 view.update(cx, |view, cx| {
7918 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7919 });
7920 assert_eq!(
7921 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7922 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
7923 );
7924
7925 view.update(cx, |view, cx| {
7926 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7927 });
7928 assert_eq!(
7929 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7930 &[
7931 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
7932 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
7933 ]
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, 23)..DisplayPoint::new(0, 27),
7943 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7944 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
7945 ]
7946 );
7947
7948 view.update(cx, |view, cx| {
7949 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7950 });
7951 assert_eq!(
7952 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7953 &[
7954 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7955 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7956 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7957 ]
7958 );
7959
7960 // Trying to shrink the selected syntax node one more time has no effect.
7961 view.update(cx, |view, cx| {
7962 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7963 });
7964 assert_eq!(
7965 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7966 &[
7967 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7968 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7969 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7970 ]
7971 );
7972
7973 // Ensure that we keep expanding the selection if the larger selection starts or ends within
7974 // a fold.
7975 view.update(cx, |view, cx| {
7976 view.fold_ranges(
7977 vec![
7978 Point::new(0, 21)..Point::new(0, 24),
7979 Point::new(3, 20)..Point::new(3, 22),
7980 ],
7981 cx,
7982 );
7983 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7984 });
7985 assert_eq!(
7986 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7987 &[
7988 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
7989 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7990 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
7991 ]
7992 );
7993 }
7994
7995 #[gpui::test]
7996 async fn test_autoindent_selections(cx: &mut gpui::TestAppContext) {
7997 let settings = cx.read(Settings::test);
7998 let language = Arc::new(
7999 Language::new(
8000 LanguageConfig {
8001 brackets: vec![
8002 BracketPair {
8003 start: "{".to_string(),
8004 end: "}".to_string(),
8005 close: false,
8006 newline: true,
8007 },
8008 BracketPair {
8009 start: "(".to_string(),
8010 end: ")".to_string(),
8011 close: false,
8012 newline: true,
8013 },
8014 ],
8015 ..Default::default()
8016 },
8017 Some(tree_sitter_rust::language()),
8018 )
8019 .with_indents_query(
8020 r#"
8021 (_ "(" ")" @end) @indent
8022 (_ "{" "}" @end) @indent
8023 "#,
8024 )
8025 .unwrap(),
8026 );
8027
8028 let text = "fn a() {}";
8029
8030 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8031 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8032 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8033 editor
8034 .condition(&cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
8035 .await;
8036
8037 editor.update(cx, |editor, cx| {
8038 editor.select_ranges([5..5, 8..8, 9..9], None, cx);
8039 editor.newline(&Newline, cx);
8040 assert_eq!(editor.text(cx), "fn a(\n \n) {\n \n}\n");
8041 assert_eq!(
8042 editor.selected_ranges(cx),
8043 &[
8044 Point::new(1, 4)..Point::new(1, 4),
8045 Point::new(3, 4)..Point::new(3, 4),
8046 Point::new(5, 0)..Point::new(5, 0)
8047 ]
8048 );
8049 });
8050 }
8051
8052 #[gpui::test]
8053 async fn test_autoclose_pairs(cx: &mut gpui::TestAppContext) {
8054 let settings = cx.read(Settings::test);
8055 let language = Arc::new(Language::new(
8056 LanguageConfig {
8057 brackets: vec![
8058 BracketPair {
8059 start: "{".to_string(),
8060 end: "}".to_string(),
8061 close: true,
8062 newline: true,
8063 },
8064 BracketPair {
8065 start: "/*".to_string(),
8066 end: " */".to_string(),
8067 close: true,
8068 newline: true,
8069 },
8070 ],
8071 ..Default::default()
8072 },
8073 Some(tree_sitter_rust::language()),
8074 ));
8075
8076 let text = r#"
8077 a
8078
8079 /
8080
8081 "#
8082 .unindent();
8083
8084 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8085 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8086 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8087 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
8088 .await;
8089
8090 view.update(cx, |view, cx| {
8091 view.select_display_ranges(
8092 &[
8093 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
8094 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
8095 ],
8096 cx,
8097 );
8098 view.handle_input(&Input("{".to_string()), cx);
8099 view.handle_input(&Input("{".to_string()), cx);
8100 view.handle_input(&Input("{".to_string()), cx);
8101 assert_eq!(
8102 view.text(cx),
8103 "
8104 {{{}}}
8105 {{{}}}
8106 /
8107
8108 "
8109 .unindent()
8110 );
8111
8112 view.move_right(&MoveRight, cx);
8113 view.handle_input(&Input("}".to_string()), cx);
8114 view.handle_input(&Input("}".to_string()), cx);
8115 view.handle_input(&Input("}".to_string()), cx);
8116 assert_eq!(
8117 view.text(cx),
8118 "
8119 {{{}}}}
8120 {{{}}}}
8121 /
8122
8123 "
8124 .unindent()
8125 );
8126
8127 view.undo(&Undo, cx);
8128 view.handle_input(&Input("/".to_string()), cx);
8129 view.handle_input(&Input("*".to_string()), cx);
8130 assert_eq!(
8131 view.text(cx),
8132 "
8133 /* */
8134 /* */
8135 /
8136
8137 "
8138 .unindent()
8139 );
8140
8141 view.undo(&Undo, cx);
8142 view.select_display_ranges(
8143 &[
8144 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
8145 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
8146 ],
8147 cx,
8148 );
8149 view.handle_input(&Input("*".to_string()), cx);
8150 assert_eq!(
8151 view.text(cx),
8152 "
8153 a
8154
8155 /*
8156 *
8157 "
8158 .unindent()
8159 );
8160
8161 view.finalize_last_transaction(cx);
8162 view.select_display_ranges(&[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)], cx);
8163 view.handle_input(&Input("{".to_string()), cx);
8164 assert_eq!(
8165 view.text(cx),
8166 "
8167 {a
8168
8169 /*
8170 *
8171 "
8172 .unindent()
8173 );
8174
8175 view.undo(&Undo, cx);
8176 view.select_display_ranges(&[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1)], cx);
8177 view.handle_input(&Input("{".to_string()), cx);
8178 assert_eq!(
8179 view.text(cx),
8180 "
8181 {a}
8182
8183 /*
8184 *
8185 "
8186 .unindent()
8187 );
8188 assert_eq!(
8189 view.selected_display_ranges(cx),
8190 [DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)]
8191 );
8192 });
8193 }
8194
8195 #[gpui::test]
8196 async fn test_snippets(cx: &mut gpui::TestAppContext) {
8197 let settings = cx.read(Settings::test);
8198
8199 let text = "
8200 a. b
8201 a. b
8202 a. b
8203 "
8204 .unindent();
8205 let buffer = cx.update(|cx| MultiBuffer::build_simple(&text, cx));
8206 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8207
8208 editor.update(cx, |editor, cx| {
8209 let buffer = &editor.snapshot(cx).buffer_snapshot;
8210 let snippet = Snippet::parse("f(${1:one}, ${2:two}, ${1:three})$0").unwrap();
8211 let insertion_ranges = [
8212 Point::new(0, 2).to_offset(buffer)..Point::new(0, 2).to_offset(buffer),
8213 Point::new(1, 2).to_offset(buffer)..Point::new(1, 2).to_offset(buffer),
8214 Point::new(2, 2).to_offset(buffer)..Point::new(2, 2).to_offset(buffer),
8215 ];
8216
8217 editor
8218 .insert_snippet(&insertion_ranges, snippet, cx)
8219 .unwrap();
8220 assert_eq!(
8221 editor.text(cx),
8222 "
8223 a.f(one, two, three) b
8224 a.f(one, two, three) b
8225 a.f(one, two, three) b
8226 "
8227 .unindent()
8228 );
8229 assert_eq!(
8230 editor.selected_ranges::<Point>(cx),
8231 &[
8232 Point::new(0, 4)..Point::new(0, 7),
8233 Point::new(0, 14)..Point::new(0, 19),
8234 Point::new(1, 4)..Point::new(1, 7),
8235 Point::new(1, 14)..Point::new(1, 19),
8236 Point::new(2, 4)..Point::new(2, 7),
8237 Point::new(2, 14)..Point::new(2, 19),
8238 ]
8239 );
8240
8241 // Can't move earlier than the first tab stop
8242 editor.move_to_prev_snippet_tabstop(cx);
8243 assert_eq!(
8244 editor.selected_ranges::<Point>(cx),
8245 &[
8246 Point::new(0, 4)..Point::new(0, 7),
8247 Point::new(0, 14)..Point::new(0, 19),
8248 Point::new(1, 4)..Point::new(1, 7),
8249 Point::new(1, 14)..Point::new(1, 19),
8250 Point::new(2, 4)..Point::new(2, 7),
8251 Point::new(2, 14)..Point::new(2, 19),
8252 ]
8253 );
8254
8255 assert!(editor.move_to_next_snippet_tabstop(cx));
8256 assert_eq!(
8257 editor.selected_ranges::<Point>(cx),
8258 &[
8259 Point::new(0, 9)..Point::new(0, 12),
8260 Point::new(1, 9)..Point::new(1, 12),
8261 Point::new(2, 9)..Point::new(2, 12)
8262 ]
8263 );
8264
8265 editor.move_to_prev_snippet_tabstop(cx);
8266 assert_eq!(
8267 editor.selected_ranges::<Point>(cx),
8268 &[
8269 Point::new(0, 4)..Point::new(0, 7),
8270 Point::new(0, 14)..Point::new(0, 19),
8271 Point::new(1, 4)..Point::new(1, 7),
8272 Point::new(1, 14)..Point::new(1, 19),
8273 Point::new(2, 4)..Point::new(2, 7),
8274 Point::new(2, 14)..Point::new(2, 19),
8275 ]
8276 );
8277
8278 assert!(editor.move_to_next_snippet_tabstop(cx));
8279 assert!(editor.move_to_next_snippet_tabstop(cx));
8280 assert_eq!(
8281 editor.selected_ranges::<Point>(cx),
8282 &[
8283 Point::new(0, 20)..Point::new(0, 20),
8284 Point::new(1, 20)..Point::new(1, 20),
8285 Point::new(2, 20)..Point::new(2, 20)
8286 ]
8287 );
8288
8289 // As soon as the last tab stop is reached, snippet state is gone
8290 editor.move_to_prev_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 }
8301
8302 #[gpui::test]
8303 async fn test_completion(cx: &mut gpui::TestAppContext) {
8304 let settings = cx.read(Settings::test);
8305
8306 let (mut language_server_config, mut fake_servers) = LanguageServerConfig::fake();
8307 language_server_config.set_fake_capabilities(lsp::ServerCapabilities {
8308 completion_provider: Some(lsp::CompletionOptions {
8309 trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
8310 ..Default::default()
8311 }),
8312 ..Default::default()
8313 });
8314 let language = Arc::new(Language::new(
8315 LanguageConfig {
8316 name: "Rust".into(),
8317 path_suffixes: vec!["rs".to_string()],
8318 language_server: Some(language_server_config),
8319 ..Default::default()
8320 },
8321 Some(tree_sitter_rust::language()),
8322 ));
8323
8324 let text = "
8325 one
8326 two
8327 three
8328 "
8329 .unindent();
8330
8331 let fs = FakeFs::new(cx.background().clone());
8332 fs.insert_file("/file.rs", text).await;
8333
8334 let project = Project::test(fs, cx);
8335 project.update(cx, |project, _| project.languages().add(language));
8336
8337 let worktree_id = project
8338 .update(cx, |project, cx| {
8339 project.find_or_create_local_worktree("/file.rs", true, cx)
8340 })
8341 .await
8342 .unwrap()
8343 .0
8344 .read_with(cx, |tree, _| tree.id());
8345 let buffer = project
8346 .update(cx, |project, cx| project.open_buffer((worktree_id, ""), cx))
8347 .await
8348 .unwrap();
8349 let mut fake_server = fake_servers.next().await.unwrap();
8350
8351 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8352 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8353
8354 editor.update(cx, |editor, cx| {
8355 editor.project = Some(project);
8356 editor.select_ranges([Point::new(0, 3)..Point::new(0, 3)], None, cx);
8357 editor.handle_input(&Input(".".to_string()), cx);
8358 });
8359
8360 handle_completion_request(
8361 &mut fake_server,
8362 "/file.rs",
8363 Point::new(0, 4),
8364 vec![
8365 (Point::new(0, 4)..Point::new(0, 4), "first_completion"),
8366 (Point::new(0, 4)..Point::new(0, 4), "second_completion"),
8367 ],
8368 )
8369 .await;
8370 editor
8371 .condition(&cx, |editor, _| editor.context_menu_visible())
8372 .await;
8373
8374 let apply_additional_edits = editor.update(cx, |editor, cx| {
8375 editor.move_down(&MoveDown, cx);
8376 let apply_additional_edits = editor
8377 .confirm_completion(&ConfirmCompletion(None), cx)
8378 .unwrap();
8379 assert_eq!(
8380 editor.text(cx),
8381 "
8382 one.second_completion
8383 two
8384 three
8385 "
8386 .unindent()
8387 );
8388 apply_additional_edits
8389 });
8390
8391 handle_resolve_completion_request(
8392 &mut fake_server,
8393 Some((Point::new(2, 5)..Point::new(2, 5), "\nadditional edit")),
8394 )
8395 .await;
8396 apply_additional_edits.await.unwrap();
8397 assert_eq!(
8398 editor.read_with(cx, |editor, cx| editor.text(cx)),
8399 "
8400 one.second_completion
8401 two
8402 three
8403 additional edit
8404 "
8405 .unindent()
8406 );
8407
8408 editor.update(cx, |editor, cx| {
8409 editor.select_ranges(
8410 [
8411 Point::new(1, 3)..Point::new(1, 3),
8412 Point::new(2, 5)..Point::new(2, 5),
8413 ],
8414 None,
8415 cx,
8416 );
8417
8418 editor.handle_input(&Input(" ".to_string()), cx);
8419 assert!(editor.context_menu.is_none());
8420 editor.handle_input(&Input("s".to_string()), cx);
8421 assert!(editor.context_menu.is_none());
8422 });
8423
8424 handle_completion_request(
8425 &mut fake_server,
8426 "/file.rs",
8427 Point::new(2, 7),
8428 vec![
8429 (Point::new(2, 6)..Point::new(2, 7), "fourth_completion"),
8430 (Point::new(2, 6)..Point::new(2, 7), "fifth_completion"),
8431 (Point::new(2, 6)..Point::new(2, 7), "sixth_completion"),
8432 ],
8433 )
8434 .await;
8435 editor
8436 .condition(&cx, |editor, _| editor.context_menu_visible())
8437 .await;
8438
8439 editor.update(cx, |editor, cx| {
8440 editor.handle_input(&Input("i".to_string()), cx);
8441 });
8442
8443 handle_completion_request(
8444 &mut fake_server,
8445 "/file.rs",
8446 Point::new(2, 8),
8447 vec![
8448 (Point::new(2, 6)..Point::new(2, 8), "fourth_completion"),
8449 (Point::new(2, 6)..Point::new(2, 8), "fifth_completion"),
8450 (Point::new(2, 6)..Point::new(2, 8), "sixth_completion"),
8451 ],
8452 )
8453 .await;
8454 editor
8455 .condition(&cx, |editor, _| editor.context_menu_visible())
8456 .await;
8457
8458 let apply_additional_edits = editor.update(cx, |editor, cx| {
8459 let apply_additional_edits = editor
8460 .confirm_completion(&ConfirmCompletion(None), cx)
8461 .unwrap();
8462 assert_eq!(
8463 editor.text(cx),
8464 "
8465 one.second_completion
8466 two sixth_completion
8467 three sixth_completion
8468 additional edit
8469 "
8470 .unindent()
8471 );
8472 apply_additional_edits
8473 });
8474 handle_resolve_completion_request(&mut fake_server, None).await;
8475 apply_additional_edits.await.unwrap();
8476
8477 async fn handle_completion_request(
8478 fake: &mut FakeLanguageServer,
8479 path: &'static str,
8480 position: Point,
8481 completions: Vec<(Range<Point>, &'static str)>,
8482 ) {
8483 fake.handle_request::<lsp::request::Completion, _>(move |params, _| {
8484 assert_eq!(
8485 params.text_document_position.text_document.uri,
8486 lsp::Url::from_file_path(path).unwrap()
8487 );
8488 assert_eq!(
8489 params.text_document_position.position,
8490 lsp::Position::new(position.row, position.column)
8491 );
8492 Some(lsp::CompletionResponse::Array(
8493 completions
8494 .iter()
8495 .map(|(range, new_text)| lsp::CompletionItem {
8496 label: new_text.to_string(),
8497 text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
8498 range: lsp::Range::new(
8499 lsp::Position::new(range.start.row, range.start.column),
8500 lsp::Position::new(range.start.row, range.start.column),
8501 ),
8502 new_text: new_text.to_string(),
8503 })),
8504 ..Default::default()
8505 })
8506 .collect(),
8507 ))
8508 })
8509 .next()
8510 .await;
8511 }
8512
8513 async fn handle_resolve_completion_request(
8514 fake: &mut FakeLanguageServer,
8515 edit: Option<(Range<Point>, &'static str)>,
8516 ) {
8517 fake.handle_request::<lsp::request::ResolveCompletionItem, _>(move |_, _| {
8518 lsp::CompletionItem {
8519 additional_text_edits: edit.clone().map(|(range, new_text)| {
8520 vec![lsp::TextEdit::new(
8521 lsp::Range::new(
8522 lsp::Position::new(range.start.row, range.start.column),
8523 lsp::Position::new(range.end.row, range.end.column),
8524 ),
8525 new_text.to_string(),
8526 )]
8527 }),
8528 ..Default::default()
8529 }
8530 })
8531 .next()
8532 .await;
8533 }
8534 }
8535
8536 #[gpui::test]
8537 async fn test_toggle_comment(cx: &mut gpui::TestAppContext) {
8538 let settings = cx.read(Settings::test);
8539 let language = Arc::new(Language::new(
8540 LanguageConfig {
8541 line_comment: Some("// ".to_string()),
8542 ..Default::default()
8543 },
8544 Some(tree_sitter_rust::language()),
8545 ));
8546
8547 let text = "
8548 fn a() {
8549 //b();
8550 // c();
8551 // d();
8552 }
8553 "
8554 .unindent();
8555
8556 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8557 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8558 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8559
8560 view.update(cx, |editor, cx| {
8561 // If multiple selections intersect a line, the line is only
8562 // toggled once.
8563 editor.select_display_ranges(
8564 &[
8565 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
8566 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
8567 ],
8568 cx,
8569 );
8570 editor.toggle_comments(&ToggleComments, cx);
8571 assert_eq!(
8572 editor.text(cx),
8573 "
8574 fn a() {
8575 b();
8576 c();
8577 d();
8578 }
8579 "
8580 .unindent()
8581 );
8582
8583 // The comment prefix is inserted at the same column for every line
8584 // in a selection.
8585 editor.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx);
8586 editor.toggle_comments(&ToggleComments, cx);
8587 assert_eq!(
8588 editor.text(cx),
8589 "
8590 fn a() {
8591 // b();
8592 // c();
8593 // d();
8594 }
8595 "
8596 .unindent()
8597 );
8598
8599 // If a selection ends at the beginning of a line, that line is not toggled.
8600 editor.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx);
8601 editor.toggle_comments(&ToggleComments, cx);
8602 assert_eq!(
8603 editor.text(cx),
8604 "
8605 fn a() {
8606 // b();
8607 c();
8608 // d();
8609 }
8610 "
8611 .unindent()
8612 );
8613 });
8614 }
8615
8616 #[gpui::test]
8617 fn test_editing_disjoint_excerpts(cx: &mut gpui::MutableAppContext) {
8618 let settings = Settings::test(cx);
8619 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8620 let multibuffer = cx.add_model(|cx| {
8621 let mut multibuffer = MultiBuffer::new(0);
8622 multibuffer.push_excerpts(
8623 buffer.clone(),
8624 [
8625 Point::new(0, 0)..Point::new(0, 4),
8626 Point::new(1, 0)..Point::new(1, 4),
8627 ],
8628 cx,
8629 );
8630 multibuffer
8631 });
8632
8633 assert_eq!(multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb");
8634
8635 let (_, view) = cx.add_window(Default::default(), |cx| {
8636 build_editor(multibuffer, settings, cx)
8637 });
8638 view.update(cx, |view, cx| {
8639 assert_eq!(view.text(cx), "aaaa\nbbbb");
8640 view.select_ranges(
8641 [
8642 Point::new(0, 0)..Point::new(0, 0),
8643 Point::new(1, 0)..Point::new(1, 0),
8644 ],
8645 None,
8646 cx,
8647 );
8648
8649 view.handle_input(&Input("X".to_string()), cx);
8650 assert_eq!(view.text(cx), "Xaaaa\nXbbbb");
8651 assert_eq!(
8652 view.selected_ranges(cx),
8653 [
8654 Point::new(0, 1)..Point::new(0, 1),
8655 Point::new(1, 1)..Point::new(1, 1),
8656 ]
8657 )
8658 });
8659 }
8660
8661 #[gpui::test]
8662 fn test_editing_overlapping_excerpts(cx: &mut gpui::MutableAppContext) {
8663 let settings = Settings::test(cx);
8664 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8665 let multibuffer = cx.add_model(|cx| {
8666 let mut multibuffer = MultiBuffer::new(0);
8667 multibuffer.push_excerpts(
8668 buffer,
8669 [
8670 Point::new(0, 0)..Point::new(1, 4),
8671 Point::new(1, 0)..Point::new(2, 4),
8672 ],
8673 cx,
8674 );
8675 multibuffer
8676 });
8677
8678 assert_eq!(
8679 multibuffer.read(cx).read(cx).text(),
8680 "aaaa\nbbbb\nbbbb\ncccc"
8681 );
8682
8683 let (_, view) = cx.add_window(Default::default(), |cx| {
8684 build_editor(multibuffer, settings, cx)
8685 });
8686 view.update(cx, |view, cx| {
8687 view.select_ranges(
8688 [
8689 Point::new(1, 1)..Point::new(1, 1),
8690 Point::new(2, 3)..Point::new(2, 3),
8691 ],
8692 None,
8693 cx,
8694 );
8695
8696 view.handle_input(&Input("X".to_string()), cx);
8697 assert_eq!(view.text(cx), "aaaa\nbXbbXb\nbXbbXb\ncccc");
8698 assert_eq!(
8699 view.selected_ranges(cx),
8700 [
8701 Point::new(1, 2)..Point::new(1, 2),
8702 Point::new(2, 5)..Point::new(2, 5),
8703 ]
8704 );
8705
8706 view.newline(&Newline, cx);
8707 assert_eq!(view.text(cx), "aaaa\nbX\nbbX\nb\nbX\nbbX\nb\ncccc");
8708 assert_eq!(
8709 view.selected_ranges(cx),
8710 [
8711 Point::new(2, 0)..Point::new(2, 0),
8712 Point::new(6, 0)..Point::new(6, 0),
8713 ]
8714 );
8715 });
8716 }
8717
8718 #[gpui::test]
8719 fn test_refresh_selections(cx: &mut gpui::MutableAppContext) {
8720 let settings = Settings::test(cx);
8721 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8722 let mut excerpt1_id = None;
8723 let multibuffer = cx.add_model(|cx| {
8724 let mut multibuffer = MultiBuffer::new(0);
8725 excerpt1_id = multibuffer
8726 .push_excerpts(
8727 buffer.clone(),
8728 [
8729 Point::new(0, 0)..Point::new(1, 4),
8730 Point::new(1, 0)..Point::new(2, 4),
8731 ],
8732 cx,
8733 )
8734 .into_iter()
8735 .next();
8736 multibuffer
8737 });
8738 assert_eq!(
8739 multibuffer.read(cx).read(cx).text(),
8740 "aaaa\nbbbb\nbbbb\ncccc"
8741 );
8742 let (_, editor) = cx.add_window(Default::default(), |cx| {
8743 let mut editor = build_editor(multibuffer.clone(), settings, cx);
8744 editor.select_ranges(
8745 [
8746 Point::new(1, 3)..Point::new(1, 3),
8747 Point::new(2, 1)..Point::new(2, 1),
8748 ],
8749 None,
8750 cx,
8751 );
8752 editor
8753 });
8754
8755 // Refreshing selections is a no-op when excerpts haven't changed.
8756 editor.update(cx, |editor, cx| {
8757 editor.refresh_selections(cx);
8758 assert_eq!(
8759 editor.selected_ranges(cx),
8760 [
8761 Point::new(1, 3)..Point::new(1, 3),
8762 Point::new(2, 1)..Point::new(2, 1),
8763 ]
8764 );
8765 });
8766
8767 multibuffer.update(cx, |multibuffer, cx| {
8768 multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx);
8769 });
8770 editor.update(cx, |editor, cx| {
8771 // Removing an excerpt causes the first selection to become degenerate.
8772 assert_eq!(
8773 editor.selected_ranges(cx),
8774 [
8775 Point::new(0, 0)..Point::new(0, 0),
8776 Point::new(0, 1)..Point::new(0, 1)
8777 ]
8778 );
8779
8780 // Refreshing selections will relocate the first selection to the original buffer
8781 // location.
8782 editor.refresh_selections(cx);
8783 assert_eq!(
8784 editor.selected_ranges(cx),
8785 [
8786 Point::new(0, 1)..Point::new(0, 1),
8787 Point::new(0, 3)..Point::new(0, 3)
8788 ]
8789 );
8790 });
8791 }
8792
8793 #[gpui::test]
8794 async fn test_extra_newline_insertion(cx: &mut gpui::TestAppContext) {
8795 let settings = cx.read(Settings::test);
8796 let language = Arc::new(Language::new(
8797 LanguageConfig {
8798 brackets: vec![
8799 BracketPair {
8800 start: "{".to_string(),
8801 end: "}".to_string(),
8802 close: true,
8803 newline: true,
8804 },
8805 BracketPair {
8806 start: "/* ".to_string(),
8807 end: " */".to_string(),
8808 close: true,
8809 newline: true,
8810 },
8811 ],
8812 ..Default::default()
8813 },
8814 Some(tree_sitter_rust::language()),
8815 ));
8816
8817 let text = concat!(
8818 "{ }\n", // Suppress rustfmt
8819 " x\n", //
8820 " /* */\n", //
8821 "x\n", //
8822 "{{} }\n", //
8823 );
8824
8825 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8826 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8827 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8828 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
8829 .await;
8830
8831 view.update(cx, |view, cx| {
8832 view.select_display_ranges(
8833 &[
8834 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
8835 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
8836 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
8837 ],
8838 cx,
8839 );
8840 view.newline(&Newline, cx);
8841
8842 assert_eq!(
8843 view.buffer().read(cx).read(cx).text(),
8844 concat!(
8845 "{ \n", // Suppress rustfmt
8846 "\n", //
8847 "}\n", //
8848 " x\n", //
8849 " /* \n", //
8850 " \n", //
8851 " */\n", //
8852 "x\n", //
8853 "{{} \n", //
8854 "}\n", //
8855 )
8856 );
8857 });
8858 }
8859
8860 #[gpui::test]
8861 fn test_highlighted_ranges(cx: &mut gpui::MutableAppContext) {
8862 let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
8863 let settings = Settings::test(&cx);
8864 let (_, editor) = cx.add_window(Default::default(), |cx| {
8865 build_editor(buffer.clone(), settings, cx)
8866 });
8867
8868 editor.update(cx, |editor, cx| {
8869 struct Type1;
8870 struct Type2;
8871
8872 let buffer = buffer.read(cx).snapshot(cx);
8873
8874 let anchor_range = |range: Range<Point>| {
8875 buffer.anchor_after(range.start)..buffer.anchor_after(range.end)
8876 };
8877
8878 editor.highlight_ranges::<Type1>(
8879 vec![
8880 anchor_range(Point::new(2, 1)..Point::new(2, 3)),
8881 anchor_range(Point::new(4, 2)..Point::new(4, 4)),
8882 anchor_range(Point::new(6, 3)..Point::new(6, 5)),
8883 anchor_range(Point::new(8, 4)..Point::new(8, 6)),
8884 ],
8885 Color::red(),
8886 cx,
8887 );
8888 editor.highlight_ranges::<Type2>(
8889 vec![
8890 anchor_range(Point::new(3, 2)..Point::new(3, 5)),
8891 anchor_range(Point::new(5, 3)..Point::new(5, 6)),
8892 anchor_range(Point::new(7, 4)..Point::new(7, 7)),
8893 anchor_range(Point::new(9, 5)..Point::new(9, 8)),
8894 ],
8895 Color::green(),
8896 cx,
8897 );
8898
8899 let snapshot = editor.snapshot(cx);
8900 let mut highlighted_ranges = editor.highlighted_ranges_in_range(
8901 anchor_range(Point::new(3, 4)..Point::new(7, 4)),
8902 &snapshot,
8903 );
8904 // Enforce a consistent ordering based on color without relying on the ordering of the
8905 // highlight's `TypeId` which is non-deterministic.
8906 highlighted_ranges.sort_unstable_by_key(|(_, color)| *color);
8907 assert_eq!(
8908 highlighted_ranges,
8909 &[
8910 (
8911 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 5),
8912 Color::green(),
8913 ),
8914 (
8915 DisplayPoint::new(5, 3)..DisplayPoint::new(5, 6),
8916 Color::green(),
8917 ),
8918 (
8919 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 4),
8920 Color::red(),
8921 ),
8922 (
8923 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
8924 Color::red(),
8925 ),
8926 ]
8927 );
8928 assert_eq!(
8929 editor.highlighted_ranges_in_range(
8930 anchor_range(Point::new(5, 6)..Point::new(6, 4)),
8931 &snapshot,
8932 ),
8933 &[(
8934 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
8935 Color::red(),
8936 )]
8937 );
8938 });
8939 }
8940
8941 #[test]
8942 fn test_combine_syntax_and_fuzzy_match_highlights() {
8943 let string = "abcdefghijklmnop";
8944 let default = HighlightStyle::default();
8945 let syntax_ranges = [
8946 (
8947 0..3,
8948 HighlightStyle {
8949 color: Color::red(),
8950 ..default
8951 },
8952 ),
8953 (
8954 4..8,
8955 HighlightStyle {
8956 color: Color::green(),
8957 ..default
8958 },
8959 ),
8960 ];
8961 let match_indices = [4, 6, 7, 8];
8962 assert_eq!(
8963 combine_syntax_and_fuzzy_match_highlights(
8964 &string,
8965 default,
8966 syntax_ranges.into_iter(),
8967 &match_indices,
8968 ),
8969 &[
8970 (
8971 0..3,
8972 HighlightStyle {
8973 color: Color::red(),
8974 ..default
8975 },
8976 ),
8977 (
8978 4..5,
8979 HighlightStyle {
8980 color: Color::green(),
8981 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
8982 ..default
8983 },
8984 ),
8985 (
8986 5..6,
8987 HighlightStyle {
8988 color: Color::green(),
8989 ..default
8990 },
8991 ),
8992 (
8993 6..8,
8994 HighlightStyle {
8995 color: Color::green(),
8996 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
8997 ..default
8998 },
8999 ),
9000 (
9001 8..9,
9002 HighlightStyle {
9003 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
9004 ..default
9005 },
9006 ),
9007 ]
9008 );
9009 }
9010
9011 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
9012 let point = DisplayPoint::new(row as u32, column as u32);
9013 point..point
9014 }
9015
9016 fn build_editor(
9017 buffer: ModelHandle<MultiBuffer>,
9018 settings: Settings,
9019 cx: &mut ViewContext<Editor>,
9020 ) -> Editor {
9021 let settings = watch::channel_with(settings);
9022 Editor::new(EditorMode::Full, buffer, None, settings.1, None, cx)
9023 }
9024}
9025
9026trait RangeExt<T> {
9027 fn sorted(&self) -> Range<T>;
9028 fn to_inclusive(&self) -> RangeInclusive<T>;
9029}
9030
9031impl<T: Ord + Clone> RangeExt<T> for Range<T> {
9032 fn sorted(&self) -> Self {
9033 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
9034 }
9035
9036 fn to_inclusive(&self) -> RangeInclusive<T> {
9037 self.start.clone()..=self.end.clone()
9038 }
9039}