1pub mod display_map;
2mod element;
3pub mod items;
4pub mod movement;
5mod multi_buffer;
6
7#[cfg(test)]
8mod test;
9
10use aho_corasick::AhoCorasick;
11use anyhow::Result;
12use clock::ReplicaId;
13use collections::{BTreeMap, Bound, HashMap, HashSet};
14pub use display_map::DisplayPoint;
15use display_map::*;
16pub use element::*;
17use fuzzy::{StringMatch, StringMatchCandidate};
18use gpui::{
19 action,
20 color::Color,
21 elements::*,
22 executor,
23 fonts::{self, HighlightStyle, TextStyle},
24 geometry::vector::{vec2f, Vector2F},
25 keymap::Binding,
26 platform::CursorStyle,
27 text_layout, AppContext, AsyncAppContext, ClipboardItem, Element, ElementBox, Entity,
28 ModelHandle, MutableAppContext, RenderContext, Task, View, ViewContext, ViewHandle,
29 WeakViewHandle,
30};
31use items::{BufferItemHandle, MultiBufferItemHandle};
32use itertools::Itertools as _;
33pub use language::{char_kind, CharKind};
34use language::{
35 AnchorRangeExt as _, BracketPair, Buffer, CodeAction, CodeLabel, Completion, Diagnostic,
36 DiagnosticSeverity, Language, Point, Selection, SelectionGoal, TransactionId,
37};
38use multi_buffer::MultiBufferChunks;
39pub use multi_buffer::{
40 Anchor, AnchorRangeExt, ExcerptId, MultiBuffer, MultiBufferSnapshot, ToOffset, ToPoint,
41};
42use ordered_float::OrderedFloat;
43use postage::watch;
44use project::{Project, ProjectTransaction};
45use serde::{Deserialize, Serialize};
46use smallvec::SmallVec;
47use smol::Timer;
48use snippet::Snippet;
49use std::{
50 any::TypeId,
51 cmp::{self, Ordering, Reverse},
52 iter::{self, FromIterator},
53 mem,
54 ops::{Deref, DerefMut, Range, RangeInclusive, Sub},
55 sync::Arc,
56 time::{Duration, Instant},
57};
58pub use sum_tree::Bias;
59use text::rope::TextDimension;
60use theme::DiagnosticStyle;
61use util::{post_inc, ResultExt, TryFutureExt};
62use workspace::{settings, ItemNavHistory, PathOpener, Settings, Workspace};
63
64const CURSOR_BLINK_INTERVAL: Duration = Duration::from_millis(500);
65const MAX_LINE_LEN: usize = 1024;
66const MIN_NAVIGATION_HISTORY_ROW_DELTA: i64 = 10;
67
68action!(Cancel);
69action!(Backspace);
70action!(Delete);
71action!(Input, String);
72action!(Newline);
73action!(Tab);
74action!(Outdent);
75action!(DeleteLine);
76action!(DeleteToPreviousWordBoundary);
77action!(DeleteToNextWordBoundary);
78action!(DeleteToBeginningOfLine);
79action!(DeleteToEndOfLine);
80action!(CutToEndOfLine);
81action!(DuplicateLine);
82action!(MoveLineUp);
83action!(MoveLineDown);
84action!(Cut);
85action!(Copy);
86action!(Paste);
87action!(Undo);
88action!(Redo);
89action!(MoveUp);
90action!(MoveDown);
91action!(MoveLeft);
92action!(MoveRight);
93action!(MoveToPreviousWordBoundary);
94action!(MoveToNextWordBoundary);
95action!(MoveToBeginningOfLine);
96action!(MoveToEndOfLine);
97action!(MoveToBeginning);
98action!(MoveToEnd);
99action!(SelectUp);
100action!(SelectDown);
101action!(SelectLeft);
102action!(SelectRight);
103action!(SelectToPreviousWordBoundary);
104action!(SelectToNextWordBoundary);
105action!(SelectToBeginningOfLine, bool);
106action!(SelectToEndOfLine, bool);
107action!(SelectToBeginning);
108action!(SelectToEnd);
109action!(SelectAll);
110action!(SelectLine);
111action!(SplitSelectionIntoLines);
112action!(AddSelectionAbove);
113action!(AddSelectionBelow);
114action!(SelectNext, bool);
115action!(ToggleComments);
116action!(SelectLargerSyntaxNode);
117action!(SelectSmallerSyntaxNode);
118action!(MoveToEnclosingBracket);
119action!(ShowNextDiagnostic);
120action!(GoToDefinition);
121action!(FindAllReferences);
122action!(Rename);
123action!(ConfirmRename);
124action!(PageUp);
125action!(PageDown);
126action!(Fold);
127action!(Unfold);
128action!(FoldSelectedRanges);
129action!(Scroll, Vector2F);
130action!(Select, SelectPhase);
131action!(ShowCompletions);
132action!(ToggleCodeActions, bool);
133action!(ConfirmCompletion, Option<usize>);
134action!(ConfirmCodeAction, Option<usize>);
135action!(OpenExcerpts);
136
137pub fn init(cx: &mut MutableAppContext, path_openers: &mut Vec<Box<dyn PathOpener>>) {
138 path_openers.push(Box::new(items::BufferOpener));
139 cx.add_bindings(vec![
140 Binding::new("escape", Cancel, Some("Editor")),
141 Binding::new("backspace", Backspace, Some("Editor")),
142 Binding::new("ctrl-h", Backspace, Some("Editor")),
143 Binding::new("delete", Delete, Some("Editor")),
144 Binding::new("ctrl-d", Delete, Some("Editor")),
145 Binding::new("enter", Newline, Some("Editor && mode == full")),
146 Binding::new(
147 "alt-enter",
148 Input("\n".into()),
149 Some("Editor && mode == auto_height"),
150 ),
151 Binding::new(
152 "enter",
153 ConfirmCompletion(None),
154 Some("Editor && showing_completions"),
155 ),
156 Binding::new(
157 "enter",
158 ConfirmCodeAction(None),
159 Some("Editor && showing_code_actions"),
160 ),
161 Binding::new("enter", ConfirmRename, Some("Editor && renaming")),
162 Binding::new("tab", Tab, Some("Editor")),
163 Binding::new(
164 "tab",
165 ConfirmCompletion(None),
166 Some("Editor && showing_completions"),
167 ),
168 Binding::new("shift-tab", Outdent, Some("Editor")),
169 Binding::new("ctrl-shift-K", DeleteLine, Some("Editor")),
170 Binding::new(
171 "alt-backspace",
172 DeleteToPreviousWordBoundary,
173 Some("Editor"),
174 ),
175 Binding::new("alt-h", DeleteToPreviousWordBoundary, Some("Editor")),
176 Binding::new("alt-delete", DeleteToNextWordBoundary, Some("Editor")),
177 Binding::new("alt-d", DeleteToNextWordBoundary, Some("Editor")),
178 Binding::new("cmd-backspace", DeleteToBeginningOfLine, Some("Editor")),
179 Binding::new("cmd-delete", DeleteToEndOfLine, Some("Editor")),
180 Binding::new("ctrl-k", CutToEndOfLine, Some("Editor")),
181 Binding::new("cmd-shift-D", DuplicateLine, Some("Editor")),
182 Binding::new("ctrl-cmd-up", MoveLineUp, Some("Editor")),
183 Binding::new("ctrl-cmd-down", MoveLineDown, Some("Editor")),
184 Binding::new("cmd-x", Cut, Some("Editor")),
185 Binding::new("cmd-c", Copy, Some("Editor")),
186 Binding::new("cmd-v", Paste, Some("Editor")),
187 Binding::new("cmd-z", Undo, Some("Editor")),
188 Binding::new("cmd-shift-Z", Redo, Some("Editor")),
189 Binding::new("up", MoveUp, Some("Editor")),
190 Binding::new("down", MoveDown, Some("Editor")),
191 Binding::new("left", MoveLeft, Some("Editor")),
192 Binding::new("right", MoveRight, Some("Editor")),
193 Binding::new("ctrl-p", MoveUp, Some("Editor")),
194 Binding::new("ctrl-n", MoveDown, Some("Editor")),
195 Binding::new("ctrl-b", MoveLeft, Some("Editor")),
196 Binding::new("ctrl-f", MoveRight, Some("Editor")),
197 Binding::new("alt-left", MoveToPreviousWordBoundary, Some("Editor")),
198 Binding::new("alt-b", MoveToPreviousWordBoundary, Some("Editor")),
199 Binding::new("alt-right", MoveToNextWordBoundary, Some("Editor")),
200 Binding::new("alt-f", MoveToNextWordBoundary, Some("Editor")),
201 Binding::new("cmd-left", MoveToBeginningOfLine, Some("Editor")),
202 Binding::new("ctrl-a", MoveToBeginningOfLine, Some("Editor")),
203 Binding::new("cmd-right", MoveToEndOfLine, Some("Editor")),
204 Binding::new("ctrl-e", MoveToEndOfLine, Some("Editor")),
205 Binding::new("cmd-up", MoveToBeginning, Some("Editor")),
206 Binding::new("cmd-down", MoveToEnd, Some("Editor")),
207 Binding::new("shift-up", SelectUp, Some("Editor")),
208 Binding::new("ctrl-shift-P", SelectUp, Some("Editor")),
209 Binding::new("shift-down", SelectDown, Some("Editor")),
210 Binding::new("ctrl-shift-N", SelectDown, Some("Editor")),
211 Binding::new("shift-left", SelectLeft, Some("Editor")),
212 Binding::new("ctrl-shift-B", SelectLeft, Some("Editor")),
213 Binding::new("shift-right", SelectRight, Some("Editor")),
214 Binding::new("ctrl-shift-F", SelectRight, Some("Editor")),
215 Binding::new(
216 "alt-shift-left",
217 SelectToPreviousWordBoundary,
218 Some("Editor"),
219 ),
220 Binding::new("alt-shift-B", SelectToPreviousWordBoundary, Some("Editor")),
221 Binding::new("alt-shift-right", SelectToNextWordBoundary, Some("Editor")),
222 Binding::new("alt-shift-F", SelectToNextWordBoundary, Some("Editor")),
223 Binding::new(
224 "cmd-shift-left",
225 SelectToBeginningOfLine(true),
226 Some("Editor"),
227 ),
228 Binding::new(
229 "ctrl-shift-A",
230 SelectToBeginningOfLine(true),
231 Some("Editor"),
232 ),
233 Binding::new("cmd-shift-right", SelectToEndOfLine(true), Some("Editor")),
234 Binding::new("ctrl-shift-E", SelectToEndOfLine(true), Some("Editor")),
235 Binding::new("cmd-shift-up", SelectToBeginning, Some("Editor")),
236 Binding::new("cmd-shift-down", SelectToEnd, Some("Editor")),
237 Binding::new("cmd-a", SelectAll, Some("Editor")),
238 Binding::new("cmd-l", SelectLine, Some("Editor")),
239 Binding::new("cmd-shift-L", SplitSelectionIntoLines, Some("Editor")),
240 Binding::new("cmd-alt-up", AddSelectionAbove, Some("Editor")),
241 Binding::new("cmd-ctrl-p", AddSelectionAbove, Some("Editor")),
242 Binding::new("cmd-alt-down", AddSelectionBelow, Some("Editor")),
243 Binding::new("cmd-ctrl-n", AddSelectionBelow, Some("Editor")),
244 Binding::new("cmd-d", SelectNext(false), Some("Editor")),
245 Binding::new("cmd-k cmd-d", SelectNext(true), Some("Editor")),
246 Binding::new("cmd-/", ToggleComments, Some("Editor")),
247 Binding::new("alt-up", SelectLargerSyntaxNode, Some("Editor")),
248 Binding::new("ctrl-w", SelectLargerSyntaxNode, Some("Editor")),
249 Binding::new("alt-down", SelectSmallerSyntaxNode, Some("Editor")),
250 Binding::new("ctrl-shift-W", SelectSmallerSyntaxNode, Some("Editor")),
251 Binding::new("f8", ShowNextDiagnostic, Some("Editor")),
252 Binding::new("f2", Rename, Some("Editor")),
253 Binding::new("f12", GoToDefinition, Some("Editor")),
254 Binding::new("alt-shift-f12", FindAllReferences, Some("Editor")),
255 Binding::new("ctrl-m", MoveToEnclosingBracket, Some("Editor")),
256 Binding::new("pageup", PageUp, Some("Editor")),
257 Binding::new("pagedown", PageDown, Some("Editor")),
258 Binding::new("alt-cmd-[", Fold, Some("Editor")),
259 Binding::new("alt-cmd-]", Unfold, Some("Editor")),
260 Binding::new("alt-cmd-f", FoldSelectedRanges, Some("Editor")),
261 Binding::new("ctrl-space", ShowCompletions, Some("Editor")),
262 Binding::new("cmd-.", ToggleCodeActions(false), Some("Editor")),
263 Binding::new("alt-enter", OpenExcerpts, Some("Editor")),
264 ]);
265
266 cx.add_action(Editor::open_new);
267 cx.add_action(|this: &mut Editor, action: &Scroll, cx| this.set_scroll_position(action.0, cx));
268 cx.add_action(Editor::select);
269 cx.add_action(Editor::cancel);
270 cx.add_action(Editor::handle_input);
271 cx.add_action(Editor::newline);
272 cx.add_action(Editor::backspace);
273 cx.add_action(Editor::delete);
274 cx.add_action(Editor::tab);
275 cx.add_action(Editor::outdent);
276 cx.add_action(Editor::delete_line);
277 cx.add_action(Editor::delete_to_previous_word_boundary);
278 cx.add_action(Editor::delete_to_next_word_boundary);
279 cx.add_action(Editor::delete_to_beginning_of_line);
280 cx.add_action(Editor::delete_to_end_of_line);
281 cx.add_action(Editor::cut_to_end_of_line);
282 cx.add_action(Editor::duplicate_line);
283 cx.add_action(Editor::move_line_up);
284 cx.add_action(Editor::move_line_down);
285 cx.add_action(Editor::cut);
286 cx.add_action(Editor::copy);
287 cx.add_action(Editor::paste);
288 cx.add_action(Editor::undo);
289 cx.add_action(Editor::redo);
290 cx.add_action(Editor::move_up);
291 cx.add_action(Editor::move_down);
292 cx.add_action(Editor::move_left);
293 cx.add_action(Editor::move_right);
294 cx.add_action(Editor::move_to_previous_word_boundary);
295 cx.add_action(Editor::move_to_next_word_boundary);
296 cx.add_action(Editor::move_to_beginning_of_line);
297 cx.add_action(Editor::move_to_end_of_line);
298 cx.add_action(Editor::move_to_beginning);
299 cx.add_action(Editor::move_to_end);
300 cx.add_action(Editor::select_up);
301 cx.add_action(Editor::select_down);
302 cx.add_action(Editor::select_left);
303 cx.add_action(Editor::select_right);
304 cx.add_action(Editor::select_to_previous_word_boundary);
305 cx.add_action(Editor::select_to_next_word_boundary);
306 cx.add_action(Editor::select_to_beginning_of_line);
307 cx.add_action(Editor::select_to_end_of_line);
308 cx.add_action(Editor::select_to_beginning);
309 cx.add_action(Editor::select_to_end);
310 cx.add_action(Editor::select_all);
311 cx.add_action(Editor::select_line);
312 cx.add_action(Editor::split_selection_into_lines);
313 cx.add_action(Editor::add_selection_above);
314 cx.add_action(Editor::add_selection_below);
315 cx.add_action(Editor::select_next);
316 cx.add_action(Editor::toggle_comments);
317 cx.add_action(Editor::select_larger_syntax_node);
318 cx.add_action(Editor::select_smaller_syntax_node);
319 cx.add_action(Editor::move_to_enclosing_bracket);
320 cx.add_action(Editor::show_next_diagnostic);
321 cx.add_action(Editor::go_to_definition);
322 cx.add_action(Editor::page_up);
323 cx.add_action(Editor::page_down);
324 cx.add_action(Editor::fold);
325 cx.add_action(Editor::unfold);
326 cx.add_action(Editor::fold_selected_ranges);
327 cx.add_action(Editor::show_completions);
328 cx.add_action(Editor::toggle_code_actions);
329 cx.add_action(Editor::open_excerpts);
330 cx.add_async_action(Editor::confirm_completion);
331 cx.add_async_action(Editor::confirm_code_action);
332 cx.add_async_action(Editor::rename);
333 cx.add_async_action(Editor::confirm_rename);
334 cx.add_async_action(Editor::find_all_references);
335}
336
337trait SelectionExt {
338 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize>;
339 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point>;
340 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint>;
341 fn spanned_rows(&self, include_end_if_at_line_start: bool, map: &DisplaySnapshot)
342 -> Range<u32>;
343}
344
345trait InvalidationRegion {
346 fn ranges(&self) -> &[Range<Anchor>];
347}
348
349#[derive(Clone, Debug)]
350pub enum SelectPhase {
351 Begin {
352 position: DisplayPoint,
353 add: bool,
354 click_count: usize,
355 },
356 BeginColumnar {
357 position: DisplayPoint,
358 overshoot: u32,
359 },
360 Extend {
361 position: DisplayPoint,
362 click_count: usize,
363 },
364 Update {
365 position: DisplayPoint,
366 overshoot: u32,
367 scroll_position: Vector2F,
368 },
369 End,
370}
371
372#[derive(Clone, Debug)]
373pub enum SelectMode {
374 Character,
375 Word(Range<Anchor>),
376 Line(Range<Anchor>),
377 All,
378}
379
380#[derive(PartialEq, Eq)]
381pub enum Autoscroll {
382 Fit,
383 Center,
384 Newest,
385}
386
387#[derive(Copy, Clone, PartialEq, Eq)]
388pub enum EditorMode {
389 SingleLine,
390 AutoHeight { max_lines: usize },
391 Full,
392}
393
394#[derive(Clone)]
395pub enum SoftWrap {
396 None,
397 EditorWidth,
398 Column(u32),
399}
400
401#[derive(Clone)]
402pub struct EditorStyle {
403 pub text: TextStyle,
404 pub placeholder_text: Option<TextStyle>,
405 pub theme: theme::Editor,
406}
407
408type CompletionId = usize;
409
410pub type GetFieldEditorTheme = fn(&theme::Theme) -> theme::FieldEditor;
411
412pub struct Editor {
413 handle: WeakViewHandle<Self>,
414 buffer: ModelHandle<MultiBuffer>,
415 display_map: ModelHandle<DisplayMap>,
416 next_selection_id: usize,
417 selections: Arc<[Selection<Anchor>]>,
418 pending_selection: Option<PendingSelection>,
419 columnar_selection_tail: Option<Anchor>,
420 add_selections_state: Option<AddSelectionsState>,
421 select_next_state: Option<SelectNextState>,
422 selection_history:
423 HashMap<TransactionId, (Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)>,
424 autoclose_stack: InvalidationStack<BracketPairState>,
425 snippet_stack: InvalidationStack<SnippetState>,
426 select_larger_syntax_node_stack: Vec<Box<[Selection<usize>]>>,
427 active_diagnostics: Option<ActiveDiagnosticGroup>,
428 scroll_position: Vector2F,
429 scroll_top_anchor: Option<Anchor>,
430 autoscroll_request: Option<Autoscroll>,
431 settings: watch::Receiver<Settings>,
432 soft_wrap_mode_override: Option<settings::SoftWrap>,
433 get_field_editor_theme: Option<GetFieldEditorTheme>,
434 project: Option<ModelHandle<Project>>,
435 focused: bool,
436 show_local_cursors: bool,
437 blink_epoch: usize,
438 blinking_paused: bool,
439 mode: EditorMode,
440 vertical_scroll_margin: f32,
441 placeholder_text: Option<Arc<str>>,
442 highlighted_rows: Option<Range<u32>>,
443 highlighted_ranges: BTreeMap<TypeId, (Color, Vec<Range<Anchor>>)>,
444 nav_history: Option<ItemNavHistory>,
445 context_menu: Option<ContextMenu>,
446 completion_tasks: Vec<(CompletionId, Task<Option<()>>)>,
447 next_completion_id: CompletionId,
448 available_code_actions: Option<(ModelHandle<Buffer>, Arc<[CodeAction]>)>,
449 code_actions_task: Option<Task<()>>,
450 document_highlights_task: Option<Task<()>>,
451 pending_rename: Option<RenameState>,
452 searchable: bool,
453}
454
455pub struct EditorSnapshot {
456 pub mode: EditorMode,
457 pub display_snapshot: DisplaySnapshot,
458 pub placeholder_text: Option<Arc<str>>,
459 is_focused: bool,
460 scroll_position: Vector2F,
461 scroll_top_anchor: Option<Anchor>,
462}
463
464#[derive(Clone)]
465pub struct PendingSelection {
466 selection: Selection<Anchor>,
467 mode: SelectMode,
468}
469
470struct AddSelectionsState {
471 above: bool,
472 stack: Vec<usize>,
473}
474
475struct SelectNextState {
476 query: AhoCorasick,
477 wordwise: bool,
478 done: bool,
479}
480
481struct BracketPairState {
482 ranges: Vec<Range<Anchor>>,
483 pair: BracketPair,
484}
485
486struct SnippetState {
487 ranges: Vec<Vec<Range<Anchor>>>,
488 active_index: usize,
489}
490
491pub struct RenameState {
492 pub range: Range<Anchor>,
493 pub old_name: String,
494 pub editor: ViewHandle<Editor>,
495 block_id: BlockId,
496}
497
498struct InvalidationStack<T>(Vec<T>);
499
500enum ContextMenu {
501 Completions(CompletionsMenu),
502 CodeActions(CodeActionsMenu),
503}
504
505impl ContextMenu {
506 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) -> bool {
507 if self.visible() {
508 match self {
509 ContextMenu::Completions(menu) => menu.select_prev(cx),
510 ContextMenu::CodeActions(menu) => menu.select_prev(cx),
511 }
512 true
513 } else {
514 false
515 }
516 }
517
518 fn select_next(&mut self, cx: &mut ViewContext<Editor>) -> bool {
519 if self.visible() {
520 match self {
521 ContextMenu::Completions(menu) => menu.select_next(cx),
522 ContextMenu::CodeActions(menu) => menu.select_next(cx),
523 }
524 true
525 } else {
526 false
527 }
528 }
529
530 fn visible(&self) -> bool {
531 match self {
532 ContextMenu::Completions(menu) => menu.visible(),
533 ContextMenu::CodeActions(menu) => menu.visible(),
534 }
535 }
536
537 fn render(
538 &self,
539 cursor_position: DisplayPoint,
540 style: EditorStyle,
541 cx: &AppContext,
542 ) -> (DisplayPoint, ElementBox) {
543 match self {
544 ContextMenu::Completions(menu) => (cursor_position, menu.render(style, cx)),
545 ContextMenu::CodeActions(menu) => menu.render(cursor_position, style),
546 }
547 }
548}
549
550struct CompletionsMenu {
551 id: CompletionId,
552 initial_position: Anchor,
553 buffer: ModelHandle<Buffer>,
554 completions: Arc<[Completion]>,
555 match_candidates: Vec<StringMatchCandidate>,
556 matches: Arc<[StringMatch]>,
557 selected_item: usize,
558 list: UniformListState,
559}
560
561impl CompletionsMenu {
562 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) {
563 if self.selected_item > 0 {
564 self.selected_item -= 1;
565 self.list.scroll_to(ScrollTarget::Show(self.selected_item));
566 }
567 cx.notify();
568 }
569
570 fn select_next(&mut self, cx: &mut ViewContext<Editor>) {
571 if self.selected_item + 1 < self.matches.len() {
572 self.selected_item += 1;
573 self.list.scroll_to(ScrollTarget::Show(self.selected_item));
574 }
575 cx.notify();
576 }
577
578 fn visible(&self) -> bool {
579 !self.matches.is_empty()
580 }
581
582 fn render(&self, style: EditorStyle, _: &AppContext) -> ElementBox {
583 enum CompletionTag {}
584
585 let completions = self.completions.clone();
586 let matches = self.matches.clone();
587 let selected_item = self.selected_item;
588 let container_style = style.autocomplete.container;
589 UniformList::new(self.list.clone(), matches.len(), move |range, items, cx| {
590 let start_ix = range.start;
591 for (ix, mat) in matches[range].iter().enumerate() {
592 let completion = &completions[mat.candidate_id];
593 let item_ix = start_ix + ix;
594 items.push(
595 MouseEventHandler::new::<CompletionTag, _, _>(
596 mat.candidate_id,
597 cx,
598 |state, _| {
599 let item_style = if item_ix == selected_item {
600 style.autocomplete.selected_item
601 } else if state.hovered {
602 style.autocomplete.hovered_item
603 } else {
604 style.autocomplete.item
605 };
606
607 Text::new(completion.label.text.clone(), style.text.clone())
608 .with_soft_wrap(false)
609 .with_highlights(combine_syntax_and_fuzzy_match_highlights(
610 &completion.label.text,
611 style.text.color.into(),
612 styled_runs_for_code_label(
613 &completion.label,
614 style.text.color,
615 &style.syntax,
616 ),
617 &mat.positions,
618 ))
619 .contained()
620 .with_style(item_style)
621 .boxed()
622 },
623 )
624 .with_cursor_style(CursorStyle::PointingHand)
625 .on_mouse_down(move |cx| {
626 cx.dispatch_action(ConfirmCompletion(Some(item_ix)));
627 })
628 .boxed(),
629 );
630 }
631 })
632 .with_width_from_item(
633 self.matches
634 .iter()
635 .enumerate()
636 .max_by_key(|(_, mat)| {
637 self.completions[mat.candidate_id]
638 .label
639 .text
640 .chars()
641 .count()
642 })
643 .map(|(ix, _)| ix),
644 )
645 .contained()
646 .with_style(container_style)
647 .boxed()
648 }
649
650 pub async fn filter(&mut self, query: Option<&str>, executor: Arc<executor::Background>) {
651 let mut matches = if let Some(query) = query {
652 fuzzy::match_strings(
653 &self.match_candidates,
654 query,
655 false,
656 100,
657 &Default::default(),
658 executor,
659 )
660 .await
661 } else {
662 self.match_candidates
663 .iter()
664 .enumerate()
665 .map(|(candidate_id, candidate)| StringMatch {
666 candidate_id,
667 score: Default::default(),
668 positions: Default::default(),
669 string: candidate.string.clone(),
670 })
671 .collect()
672 };
673 matches.sort_unstable_by_key(|mat| {
674 (
675 Reverse(OrderedFloat(mat.score)),
676 self.completions[mat.candidate_id].sort_key(),
677 )
678 });
679
680 for mat in &mut matches {
681 let filter_start = self.completions[mat.candidate_id].label.filter_range.start;
682 for position in &mut mat.positions {
683 *position += filter_start;
684 }
685 }
686
687 self.matches = matches.into();
688 }
689}
690
691#[derive(Clone)]
692struct CodeActionsMenu {
693 actions: Arc<[CodeAction]>,
694 buffer: ModelHandle<Buffer>,
695 selected_item: usize,
696 list: UniformListState,
697 deployed_from_indicator: bool,
698}
699
700impl CodeActionsMenu {
701 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) {
702 if self.selected_item > 0 {
703 self.selected_item -= 1;
704 cx.notify()
705 }
706 }
707
708 fn select_next(&mut self, cx: &mut ViewContext<Editor>) {
709 if self.selected_item + 1 < self.actions.len() {
710 self.selected_item += 1;
711 cx.notify()
712 }
713 }
714
715 fn visible(&self) -> bool {
716 !self.actions.is_empty()
717 }
718
719 fn render(
720 &self,
721 mut cursor_position: DisplayPoint,
722 style: EditorStyle,
723 ) -> (DisplayPoint, ElementBox) {
724 enum ActionTag {}
725
726 let container_style = style.autocomplete.container;
727 let actions = self.actions.clone();
728 let selected_item = self.selected_item;
729 let element =
730 UniformList::new(self.list.clone(), actions.len(), move |range, items, cx| {
731 let start_ix = range.start;
732 for (ix, action) in actions[range].iter().enumerate() {
733 let item_ix = start_ix + ix;
734 items.push(
735 MouseEventHandler::new::<ActionTag, _, _>(item_ix, cx, |state, _| {
736 let item_style = if item_ix == selected_item {
737 style.autocomplete.selected_item
738 } else if state.hovered {
739 style.autocomplete.hovered_item
740 } else {
741 style.autocomplete.item
742 };
743
744 Text::new(action.lsp_action.title.clone(), style.text.clone())
745 .with_soft_wrap(false)
746 .contained()
747 .with_style(item_style)
748 .boxed()
749 })
750 .with_cursor_style(CursorStyle::PointingHand)
751 .on_mouse_down(move |cx| {
752 cx.dispatch_action(ConfirmCodeAction(Some(item_ix)));
753 })
754 .boxed(),
755 );
756 }
757 })
758 .with_width_from_item(
759 self.actions
760 .iter()
761 .enumerate()
762 .max_by_key(|(_, action)| action.lsp_action.title.chars().count())
763 .map(|(ix, _)| ix),
764 )
765 .contained()
766 .with_style(container_style)
767 .boxed();
768
769 if self.deployed_from_indicator {
770 *cursor_position.column_mut() = 0;
771 }
772
773 (cursor_position, element)
774 }
775}
776
777#[derive(Debug)]
778struct ActiveDiagnosticGroup {
779 primary_range: Range<Anchor>,
780 primary_message: String,
781 blocks: HashMap<BlockId, Diagnostic>,
782 is_valid: bool,
783}
784
785#[derive(Serialize, Deserialize)]
786struct ClipboardSelection {
787 len: usize,
788 is_entire_line: bool,
789}
790
791pub struct NavigationData {
792 anchor: Anchor,
793 offset: usize,
794}
795
796impl Editor {
797 pub fn single_line(
798 settings: watch::Receiver<Settings>,
799 field_editor_style: Option<GetFieldEditorTheme>,
800 cx: &mut ViewContext<Self>,
801 ) -> Self {
802 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
803 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
804 Self::new(
805 EditorMode::SingleLine,
806 buffer,
807 None,
808 settings,
809 field_editor_style,
810 cx,
811 )
812 }
813
814 pub fn auto_height(
815 max_lines: usize,
816 settings: watch::Receiver<Settings>,
817 field_editor_style: Option<GetFieldEditorTheme>,
818 cx: &mut ViewContext<Self>,
819 ) -> Self {
820 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
821 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
822 Self::new(
823 EditorMode::AutoHeight { max_lines },
824 buffer,
825 None,
826 settings,
827 field_editor_style,
828 cx,
829 )
830 }
831
832 pub fn for_buffer(
833 buffer: ModelHandle<MultiBuffer>,
834 project: Option<ModelHandle<Project>>,
835 settings: watch::Receiver<Settings>,
836 cx: &mut ViewContext<Self>,
837 ) -> Self {
838 Self::new(EditorMode::Full, buffer, project, settings, None, cx)
839 }
840
841 pub fn clone(&self, nav_history: ItemNavHistory, cx: &mut ViewContext<Self>) -> Self {
842 let mut clone = Self::new(
843 self.mode,
844 self.buffer.clone(),
845 self.project.clone(),
846 self.settings.clone(),
847 self.get_field_editor_theme,
848 cx,
849 );
850 clone.scroll_position = self.scroll_position;
851 clone.scroll_top_anchor = self.scroll_top_anchor.clone();
852 clone.nav_history = Some(nav_history);
853 clone.searchable = self.searchable;
854 clone
855 }
856
857 fn new(
858 mode: EditorMode,
859 buffer: ModelHandle<MultiBuffer>,
860 project: Option<ModelHandle<Project>>,
861 settings: watch::Receiver<Settings>,
862 get_field_editor_theme: Option<GetFieldEditorTheme>,
863 cx: &mut ViewContext<Self>,
864 ) -> Self {
865 let display_map = cx.add_model(|cx| {
866 let settings = settings.borrow();
867 let style = build_style(&*settings, get_field_editor_theme, cx);
868 DisplayMap::new(
869 buffer.clone(),
870 settings.tab_size,
871 style.text.font_id,
872 style.text.font_size,
873 None,
874 2,
875 1,
876 cx,
877 )
878 });
879 cx.observe(&buffer, Self::on_buffer_changed).detach();
880 cx.subscribe(&buffer, Self::on_buffer_event).detach();
881 cx.observe(&display_map, Self::on_display_map_changed)
882 .detach();
883
884 let mut this = Self {
885 handle: cx.weak_handle(),
886 buffer,
887 display_map,
888 selections: Arc::from([]),
889 pending_selection: Some(PendingSelection {
890 selection: Selection {
891 id: 0,
892 start: Anchor::min(),
893 end: Anchor::min(),
894 reversed: false,
895 goal: SelectionGoal::None,
896 },
897 mode: SelectMode::Character,
898 }),
899 columnar_selection_tail: None,
900 next_selection_id: 1,
901 add_selections_state: None,
902 select_next_state: None,
903 selection_history: Default::default(),
904 autoclose_stack: Default::default(),
905 snippet_stack: Default::default(),
906 select_larger_syntax_node_stack: Vec::new(),
907 active_diagnostics: None,
908 settings,
909 soft_wrap_mode_override: None,
910 get_field_editor_theme,
911 project,
912 scroll_position: Vector2F::zero(),
913 scroll_top_anchor: None,
914 autoscroll_request: None,
915 focused: false,
916 show_local_cursors: false,
917 blink_epoch: 0,
918 blinking_paused: false,
919 mode,
920 vertical_scroll_margin: 3.0,
921 placeholder_text: None,
922 highlighted_rows: None,
923 highlighted_ranges: Default::default(),
924 nav_history: None,
925 context_menu: None,
926 completion_tasks: Default::default(),
927 next_completion_id: 0,
928 available_code_actions: Default::default(),
929 code_actions_task: Default::default(),
930 document_highlights_task: Default::default(),
931 pending_rename: Default::default(),
932 searchable: true,
933 };
934 this.end_selection(cx);
935 this
936 }
937
938 pub fn open_new(
939 workspace: &mut Workspace,
940 _: &workspace::OpenNew,
941 cx: &mut ViewContext<Workspace>,
942 ) {
943 let buffer = cx
944 .add_model(|cx| Buffer::new(0, "", cx).with_language(language::PLAIN_TEXT.clone(), cx));
945 workspace.open_item(BufferItemHandle(buffer), cx);
946 }
947
948 pub fn replica_id(&self, cx: &AppContext) -> ReplicaId {
949 self.buffer.read(cx).replica_id()
950 }
951
952 pub fn buffer(&self) -> &ModelHandle<MultiBuffer> {
953 &self.buffer
954 }
955
956 pub fn title(&self, cx: &AppContext) -> String {
957 self.buffer().read(cx).title(cx)
958 }
959
960 pub fn snapshot(&mut self, cx: &mut MutableAppContext) -> EditorSnapshot {
961 EditorSnapshot {
962 mode: self.mode,
963 display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
964 scroll_position: self.scroll_position,
965 scroll_top_anchor: self.scroll_top_anchor.clone(),
966 placeholder_text: self.placeholder_text.clone(),
967 is_focused: self
968 .handle
969 .upgrade(cx)
970 .map_or(false, |handle| handle.is_focused(cx)),
971 }
972 }
973
974 pub fn language<'a>(&self, cx: &'a AppContext) -> Option<&'a Arc<Language>> {
975 self.buffer.read(cx).language(cx)
976 }
977
978 fn style(&self, cx: &AppContext) -> EditorStyle {
979 build_style(&*self.settings.borrow(), self.get_field_editor_theme, cx)
980 }
981
982 pub fn set_placeholder_text(
983 &mut self,
984 placeholder_text: impl Into<Arc<str>>,
985 cx: &mut ViewContext<Self>,
986 ) {
987 self.placeholder_text = Some(placeholder_text.into());
988 cx.notify();
989 }
990
991 pub fn set_vertical_scroll_margin(&mut self, margin_rows: usize, cx: &mut ViewContext<Self>) {
992 self.vertical_scroll_margin = margin_rows as f32;
993 cx.notify();
994 }
995
996 pub fn set_scroll_position(&mut self, scroll_position: Vector2F, cx: &mut ViewContext<Self>) {
997 let map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
998
999 if scroll_position.y() == 0. {
1000 self.scroll_top_anchor = None;
1001 self.scroll_position = scroll_position;
1002 } else {
1003 let scroll_top_buffer_offset =
1004 DisplayPoint::new(scroll_position.y() as u32, 0).to_offset(&map, Bias::Right);
1005 let anchor = map
1006 .buffer_snapshot
1007 .anchor_at(scroll_top_buffer_offset, Bias::Right);
1008 self.scroll_position = vec2f(
1009 scroll_position.x(),
1010 scroll_position.y() - anchor.to_display_point(&map).row() as f32,
1011 );
1012 self.scroll_top_anchor = Some(anchor);
1013 }
1014
1015 cx.notify();
1016 }
1017
1018 pub fn scroll_position(&self, cx: &mut ViewContext<Self>) -> Vector2F {
1019 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1020 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor)
1021 }
1022
1023 pub fn clamp_scroll_left(&mut self, max: f32) -> bool {
1024 if max < self.scroll_position.x() {
1025 self.scroll_position.set_x(max);
1026 true
1027 } else {
1028 false
1029 }
1030 }
1031
1032 pub fn autoscroll_vertically(
1033 &mut self,
1034 viewport_height: f32,
1035 line_height: f32,
1036 cx: &mut ViewContext<Self>,
1037 ) -> bool {
1038 let visible_lines = viewport_height / line_height;
1039 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1040 let mut scroll_position =
1041 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor);
1042 let max_scroll_top = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
1043 (display_map.max_point().row() as f32 - visible_lines + 1.).max(0.)
1044 } else {
1045 display_map.max_point().row().saturating_sub(1) as f32
1046 };
1047 if scroll_position.y() > max_scroll_top {
1048 scroll_position.set_y(max_scroll_top);
1049 self.set_scroll_position(scroll_position, cx);
1050 }
1051
1052 let autoscroll = if let Some(autoscroll) = self.autoscroll_request.take() {
1053 autoscroll
1054 } else {
1055 return false;
1056 };
1057
1058 let first_cursor_top;
1059 let last_cursor_bottom;
1060 if let Some(highlighted_rows) = &self.highlighted_rows {
1061 first_cursor_top = highlighted_rows.start as f32;
1062 last_cursor_bottom = first_cursor_top + 1.;
1063 } else if autoscroll == Autoscroll::Newest {
1064 let newest_selection =
1065 self.newest_selection_with_snapshot::<Point>(&display_map.buffer_snapshot);
1066 first_cursor_top = newest_selection.head().to_display_point(&display_map).row() as f32;
1067 last_cursor_bottom = first_cursor_top + 1.;
1068 } else {
1069 let selections = self.local_selections::<Point>(cx);
1070 first_cursor_top = selections
1071 .first()
1072 .unwrap()
1073 .head()
1074 .to_display_point(&display_map)
1075 .row() as f32;
1076 last_cursor_bottom = selections
1077 .last()
1078 .unwrap()
1079 .head()
1080 .to_display_point(&display_map)
1081 .row() as f32
1082 + 1.0;
1083 }
1084
1085 let margin = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
1086 0.
1087 } else {
1088 ((visible_lines - (last_cursor_bottom - first_cursor_top)) / 2.0).floor()
1089 };
1090 if margin < 0.0 {
1091 return false;
1092 }
1093
1094 match autoscroll {
1095 Autoscroll::Fit | Autoscroll::Newest => {
1096 let margin = margin.min(self.vertical_scroll_margin);
1097 let target_top = (first_cursor_top - margin).max(0.0);
1098 let target_bottom = last_cursor_bottom + margin;
1099 let start_row = scroll_position.y();
1100 let end_row = start_row + visible_lines;
1101
1102 if target_top < start_row {
1103 scroll_position.set_y(target_top);
1104 self.set_scroll_position(scroll_position, cx);
1105 } else if target_bottom >= end_row {
1106 scroll_position.set_y(target_bottom - visible_lines);
1107 self.set_scroll_position(scroll_position, cx);
1108 }
1109 }
1110 Autoscroll::Center => {
1111 scroll_position.set_y((first_cursor_top - margin).max(0.0));
1112 self.set_scroll_position(scroll_position, cx);
1113 }
1114 }
1115
1116 true
1117 }
1118
1119 pub fn autoscroll_horizontally(
1120 &mut self,
1121 start_row: u32,
1122 viewport_width: f32,
1123 scroll_width: f32,
1124 max_glyph_width: f32,
1125 layouts: &[text_layout::Line],
1126 cx: &mut ViewContext<Self>,
1127 ) -> bool {
1128 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1129 let selections = self.local_selections::<Point>(cx);
1130
1131 let mut target_left;
1132 let mut target_right;
1133
1134 if self.highlighted_rows.is_some() {
1135 target_left = 0.0_f32;
1136 target_right = 0.0_f32;
1137 } else {
1138 target_left = std::f32::INFINITY;
1139 target_right = 0.0_f32;
1140 for selection in selections {
1141 let head = selection.head().to_display_point(&display_map);
1142 if head.row() >= start_row && head.row() < start_row + layouts.len() as u32 {
1143 let start_column = head.column().saturating_sub(3);
1144 let end_column = cmp::min(display_map.line_len(head.row()), head.column() + 3);
1145 target_left = target_left.min(
1146 layouts[(head.row() - start_row) as usize]
1147 .x_for_index(start_column as usize),
1148 );
1149 target_right = target_right.max(
1150 layouts[(head.row() - start_row) as usize].x_for_index(end_column as usize)
1151 + max_glyph_width,
1152 );
1153 }
1154 }
1155 }
1156
1157 target_right = target_right.min(scroll_width);
1158
1159 if target_right - target_left > viewport_width {
1160 return false;
1161 }
1162
1163 let scroll_left = self.scroll_position.x() * max_glyph_width;
1164 let scroll_right = scroll_left + viewport_width;
1165
1166 if target_left < scroll_left {
1167 self.scroll_position.set_x(target_left / max_glyph_width);
1168 true
1169 } else if target_right > scroll_right {
1170 self.scroll_position
1171 .set_x((target_right - viewport_width) / max_glyph_width);
1172 true
1173 } else {
1174 false
1175 }
1176 }
1177
1178 fn select(&mut self, Select(phase): &Select, cx: &mut ViewContext<Self>) {
1179 self.hide_context_menu(cx);
1180
1181 match phase {
1182 SelectPhase::Begin {
1183 position,
1184 add,
1185 click_count,
1186 } => self.begin_selection(*position, *add, *click_count, cx),
1187 SelectPhase::BeginColumnar {
1188 position,
1189 overshoot,
1190 } => self.begin_columnar_selection(*position, *overshoot, cx),
1191 SelectPhase::Extend {
1192 position,
1193 click_count,
1194 } => self.extend_selection(*position, *click_count, cx),
1195 SelectPhase::Update {
1196 position,
1197 overshoot,
1198 scroll_position,
1199 } => self.update_selection(*position, *overshoot, *scroll_position, cx),
1200 SelectPhase::End => self.end_selection(cx),
1201 }
1202 }
1203
1204 fn extend_selection(
1205 &mut self,
1206 position: DisplayPoint,
1207 click_count: usize,
1208 cx: &mut ViewContext<Self>,
1209 ) {
1210 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1211 let tail = self
1212 .newest_selection_with_snapshot::<usize>(&display_map.buffer_snapshot)
1213 .tail();
1214 self.begin_selection(position, false, click_count, cx);
1215
1216 let position = position.to_offset(&display_map, Bias::Left);
1217 let tail_anchor = display_map.buffer_snapshot.anchor_before(tail);
1218 let mut pending = self.pending_selection.clone().unwrap();
1219
1220 if position >= tail {
1221 pending.selection.start = tail_anchor.clone();
1222 } else {
1223 pending.selection.end = tail_anchor.clone();
1224 pending.selection.reversed = true;
1225 }
1226
1227 match &mut pending.mode {
1228 SelectMode::Word(range) | SelectMode::Line(range) => {
1229 *range = tail_anchor.clone()..tail_anchor
1230 }
1231 _ => {}
1232 }
1233
1234 self.set_selections(self.selections.clone(), Some(pending), cx);
1235 }
1236
1237 fn begin_selection(
1238 &mut self,
1239 position: DisplayPoint,
1240 add: bool,
1241 click_count: usize,
1242 cx: &mut ViewContext<Self>,
1243 ) {
1244 if !self.focused {
1245 cx.focus_self();
1246 cx.emit(Event::Activate);
1247 }
1248
1249 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1250 let buffer = &display_map.buffer_snapshot;
1251 let newest_selection = self.newest_anchor_selection().clone();
1252
1253 let start;
1254 let end;
1255 let mode;
1256 match click_count {
1257 1 => {
1258 start = buffer.anchor_before(position.to_point(&display_map));
1259 end = start.clone();
1260 mode = SelectMode::Character;
1261 }
1262 2 => {
1263 let range = movement::surrounding_word(&display_map, position);
1264 start = buffer.anchor_before(range.start.to_point(&display_map));
1265 end = buffer.anchor_before(range.end.to_point(&display_map));
1266 mode = SelectMode::Word(start.clone()..end.clone());
1267 }
1268 3 => {
1269 let position = display_map
1270 .clip_point(position, Bias::Left)
1271 .to_point(&display_map);
1272 let line_start = display_map.prev_line_boundary(position).0;
1273 let next_line_start = buffer.clip_point(
1274 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1275 Bias::Left,
1276 );
1277 start = buffer.anchor_before(line_start);
1278 end = buffer.anchor_before(next_line_start);
1279 mode = SelectMode::Line(start.clone()..end.clone());
1280 }
1281 _ => {
1282 start = buffer.anchor_before(0);
1283 end = buffer.anchor_before(buffer.len());
1284 mode = SelectMode::All;
1285 }
1286 }
1287
1288 self.push_to_nav_history(newest_selection.head(), Some(end.to_point(&buffer)), cx);
1289
1290 let selection = Selection {
1291 id: post_inc(&mut self.next_selection_id),
1292 start,
1293 end,
1294 reversed: false,
1295 goal: SelectionGoal::None,
1296 };
1297
1298 let mut selections;
1299 if add {
1300 selections = self.selections.clone();
1301 // Remove the newest selection if it was added due to a previous mouse up
1302 // within this multi-click.
1303 if click_count > 1 {
1304 selections = self
1305 .selections
1306 .iter()
1307 .filter(|selection| selection.id != newest_selection.id)
1308 .cloned()
1309 .collect();
1310 }
1311 } else {
1312 selections = Arc::from([]);
1313 }
1314 self.set_selections(selections, Some(PendingSelection { selection, mode }), cx);
1315
1316 cx.notify();
1317 }
1318
1319 fn begin_columnar_selection(
1320 &mut self,
1321 position: DisplayPoint,
1322 overshoot: u32,
1323 cx: &mut ViewContext<Self>,
1324 ) {
1325 if !self.focused {
1326 cx.focus_self();
1327 cx.emit(Event::Activate);
1328 }
1329
1330 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1331 let tail = self
1332 .newest_selection_with_snapshot::<Point>(&display_map.buffer_snapshot)
1333 .tail();
1334 self.columnar_selection_tail = Some(display_map.buffer_snapshot.anchor_before(tail));
1335
1336 self.select_columns(
1337 tail.to_display_point(&display_map),
1338 position,
1339 overshoot,
1340 &display_map,
1341 cx,
1342 );
1343 }
1344
1345 fn update_selection(
1346 &mut self,
1347 position: DisplayPoint,
1348 overshoot: u32,
1349 scroll_position: Vector2F,
1350 cx: &mut ViewContext<Self>,
1351 ) {
1352 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1353
1354 if let Some(tail) = self.columnar_selection_tail.as_ref() {
1355 let tail = tail.to_display_point(&display_map);
1356 self.select_columns(tail, position, overshoot, &display_map, cx);
1357 } else if let Some(mut pending) = self.pending_selection.clone() {
1358 let buffer = self.buffer.read(cx).snapshot(cx);
1359 let head;
1360 let tail;
1361 match &pending.mode {
1362 SelectMode::Character => {
1363 head = position.to_point(&display_map);
1364 tail = pending.selection.tail().to_point(&buffer);
1365 }
1366 SelectMode::Word(original_range) => {
1367 let original_display_range = original_range.start.to_display_point(&display_map)
1368 ..original_range.end.to_display_point(&display_map);
1369 let original_buffer_range = original_display_range.start.to_point(&display_map)
1370 ..original_display_range.end.to_point(&display_map);
1371 if movement::is_inside_word(&display_map, position)
1372 || original_display_range.contains(&position)
1373 {
1374 let word_range = movement::surrounding_word(&display_map, position);
1375 if word_range.start < original_display_range.start {
1376 head = word_range.start.to_point(&display_map);
1377 } else {
1378 head = word_range.end.to_point(&display_map);
1379 }
1380 } else {
1381 head = position.to_point(&display_map);
1382 }
1383
1384 if head <= original_buffer_range.start {
1385 tail = original_buffer_range.end;
1386 } else {
1387 tail = original_buffer_range.start;
1388 }
1389 }
1390 SelectMode::Line(original_range) => {
1391 let original_range = original_range.to_point(&display_map.buffer_snapshot);
1392
1393 let position = display_map
1394 .clip_point(position, Bias::Left)
1395 .to_point(&display_map);
1396 let line_start = display_map.prev_line_boundary(position).0;
1397 let next_line_start = buffer.clip_point(
1398 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1399 Bias::Left,
1400 );
1401
1402 if line_start < original_range.start {
1403 head = line_start
1404 } else {
1405 head = next_line_start
1406 }
1407
1408 if head <= original_range.start {
1409 tail = original_range.end;
1410 } else {
1411 tail = original_range.start;
1412 }
1413 }
1414 SelectMode::All => {
1415 return;
1416 }
1417 };
1418
1419 if head < tail {
1420 pending.selection.start = buffer.anchor_before(head);
1421 pending.selection.end = buffer.anchor_before(tail);
1422 pending.selection.reversed = true;
1423 } else {
1424 pending.selection.start = buffer.anchor_before(tail);
1425 pending.selection.end = buffer.anchor_before(head);
1426 pending.selection.reversed = false;
1427 }
1428 self.set_selections(self.selections.clone(), Some(pending), cx);
1429 } else {
1430 log::error!("update_selection dispatched with no pending selection");
1431 return;
1432 }
1433
1434 self.set_scroll_position(scroll_position, cx);
1435 cx.notify();
1436 }
1437
1438 fn end_selection(&mut self, cx: &mut ViewContext<Self>) {
1439 self.columnar_selection_tail.take();
1440 if self.pending_selection.is_some() {
1441 let selections = self.local_selections::<usize>(cx);
1442 self.update_selections(selections, None, cx);
1443 }
1444 }
1445
1446 fn select_columns(
1447 &mut self,
1448 tail: DisplayPoint,
1449 head: DisplayPoint,
1450 overshoot: u32,
1451 display_map: &DisplaySnapshot,
1452 cx: &mut ViewContext<Self>,
1453 ) {
1454 let start_row = cmp::min(tail.row(), head.row());
1455 let end_row = cmp::max(tail.row(), head.row());
1456 let start_column = cmp::min(tail.column(), head.column() + overshoot);
1457 let end_column = cmp::max(tail.column(), head.column() + overshoot);
1458 let reversed = start_column < tail.column();
1459
1460 let selections = (start_row..=end_row)
1461 .filter_map(|row| {
1462 if start_column <= display_map.line_len(row) && !display_map.is_block_line(row) {
1463 let start = display_map
1464 .clip_point(DisplayPoint::new(row, start_column), Bias::Left)
1465 .to_point(&display_map);
1466 let end = display_map
1467 .clip_point(DisplayPoint::new(row, end_column), Bias::Right)
1468 .to_point(&display_map);
1469 Some(Selection {
1470 id: post_inc(&mut self.next_selection_id),
1471 start,
1472 end,
1473 reversed,
1474 goal: SelectionGoal::None,
1475 })
1476 } else {
1477 None
1478 }
1479 })
1480 .collect::<Vec<_>>();
1481
1482 self.update_selections(selections, None, cx);
1483 cx.notify();
1484 }
1485
1486 pub fn is_selecting(&self) -> bool {
1487 self.pending_selection.is_some() || self.columnar_selection_tail.is_some()
1488 }
1489
1490 pub fn cancel(&mut self, _: &Cancel, cx: &mut ViewContext<Self>) {
1491 if self.take_rename(cx).is_some() {
1492 return;
1493 }
1494
1495 if self.hide_context_menu(cx).is_some() {
1496 return;
1497 }
1498
1499 if self.snippet_stack.pop().is_some() {
1500 return;
1501 }
1502
1503 if self.mode != EditorMode::Full {
1504 cx.propagate_action();
1505 return;
1506 }
1507
1508 if self.active_diagnostics.is_some() {
1509 self.dismiss_diagnostics(cx);
1510 } else if let Some(pending) = self.pending_selection.clone() {
1511 let mut selections = self.selections.clone();
1512 if selections.is_empty() {
1513 selections = Arc::from([pending.selection]);
1514 }
1515 self.set_selections(selections, None, cx);
1516 self.request_autoscroll(Autoscroll::Fit, cx);
1517 } else {
1518 let mut oldest_selection = self.oldest_selection::<usize>(&cx);
1519 if self.selection_count() == 1 {
1520 if oldest_selection.is_empty() {
1521 cx.propagate_action();
1522 return;
1523 }
1524
1525 oldest_selection.start = oldest_selection.head().clone();
1526 oldest_selection.end = oldest_selection.head().clone();
1527 }
1528 self.update_selections(vec![oldest_selection], Some(Autoscroll::Fit), cx);
1529 }
1530 }
1531
1532 #[cfg(any(test, feature = "test-support"))]
1533 pub fn selected_ranges<D: TextDimension + Ord + Sub<D, Output = D>>(
1534 &self,
1535 cx: &mut MutableAppContext,
1536 ) -> Vec<Range<D>> {
1537 self.local_selections::<D>(cx)
1538 .iter()
1539 .map(|s| {
1540 if s.reversed {
1541 s.end.clone()..s.start.clone()
1542 } else {
1543 s.start.clone()..s.end.clone()
1544 }
1545 })
1546 .collect()
1547 }
1548
1549 #[cfg(any(test, feature = "test-support"))]
1550 pub fn selected_display_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
1551 let display_map = self
1552 .display_map
1553 .update(cx, |display_map, cx| display_map.snapshot(cx));
1554 self.selections
1555 .iter()
1556 .chain(
1557 self.pending_selection
1558 .as_ref()
1559 .map(|pending| &pending.selection),
1560 )
1561 .map(|s| {
1562 if s.reversed {
1563 s.end.to_display_point(&display_map)..s.start.to_display_point(&display_map)
1564 } else {
1565 s.start.to_display_point(&display_map)..s.end.to_display_point(&display_map)
1566 }
1567 })
1568 .collect()
1569 }
1570
1571 pub fn select_ranges<I, T>(
1572 &mut self,
1573 ranges: I,
1574 autoscroll: Option<Autoscroll>,
1575 cx: &mut ViewContext<Self>,
1576 ) where
1577 I: IntoIterator<Item = Range<T>>,
1578 T: ToOffset,
1579 {
1580 let buffer = self.buffer.read(cx).snapshot(cx);
1581 let selections = ranges
1582 .into_iter()
1583 .map(|range| {
1584 let mut start = range.start.to_offset(&buffer);
1585 let mut end = range.end.to_offset(&buffer);
1586 let reversed = if start > end {
1587 mem::swap(&mut start, &mut end);
1588 true
1589 } else {
1590 false
1591 };
1592 Selection {
1593 id: post_inc(&mut self.next_selection_id),
1594 start,
1595 end,
1596 reversed,
1597 goal: SelectionGoal::None,
1598 }
1599 })
1600 .collect::<Vec<_>>();
1601 self.update_selections(selections, autoscroll, cx);
1602 }
1603
1604 #[cfg(any(test, feature = "test-support"))]
1605 pub fn select_display_ranges<'a, T>(&mut self, ranges: T, cx: &mut ViewContext<Self>)
1606 where
1607 T: IntoIterator<Item = &'a Range<DisplayPoint>>,
1608 {
1609 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1610 let selections = ranges
1611 .into_iter()
1612 .map(|range| {
1613 let mut start = range.start;
1614 let mut end = range.end;
1615 let reversed = if start > end {
1616 mem::swap(&mut start, &mut end);
1617 true
1618 } else {
1619 false
1620 };
1621 Selection {
1622 id: post_inc(&mut self.next_selection_id),
1623 start: start.to_point(&display_map),
1624 end: end.to_point(&display_map),
1625 reversed,
1626 goal: SelectionGoal::None,
1627 }
1628 })
1629 .collect();
1630 self.update_selections(selections, None, cx);
1631 }
1632
1633 pub fn handle_input(&mut self, action: &Input, cx: &mut ViewContext<Self>) {
1634 let text = action.0.as_ref();
1635 if !self.skip_autoclose_end(text, cx) {
1636 self.start_transaction(cx);
1637 self.insert(text, cx);
1638 self.autoclose_pairs(cx);
1639 self.end_transaction(cx);
1640 self.trigger_completion_on_input(text, cx);
1641 }
1642 }
1643
1644 pub fn newline(&mut self, _: &Newline, cx: &mut ViewContext<Self>) {
1645 self.start_transaction(cx);
1646 let mut old_selections = SmallVec::<[_; 32]>::new();
1647 {
1648 let selections = self.local_selections::<usize>(cx);
1649 let buffer = self.buffer.read(cx).snapshot(cx);
1650 for selection in selections.iter() {
1651 let start_point = selection.start.to_point(&buffer);
1652 let indent = buffer
1653 .indent_column_for_line(start_point.row)
1654 .min(start_point.column);
1655 let start = selection.start;
1656 let end = selection.end;
1657
1658 let mut insert_extra_newline = false;
1659 if let Some(language) = buffer.language() {
1660 let leading_whitespace_len = buffer
1661 .reversed_chars_at(start)
1662 .take_while(|c| c.is_whitespace() && *c != '\n')
1663 .map(|c| c.len_utf8())
1664 .sum::<usize>();
1665
1666 let trailing_whitespace_len = buffer
1667 .chars_at(end)
1668 .take_while(|c| c.is_whitespace() && *c != '\n')
1669 .map(|c| c.len_utf8())
1670 .sum::<usize>();
1671
1672 insert_extra_newline = language.brackets().iter().any(|pair| {
1673 let pair_start = pair.start.trim_end();
1674 let pair_end = pair.end.trim_start();
1675
1676 pair.newline
1677 && buffer.contains_str_at(end + trailing_whitespace_len, pair_end)
1678 && buffer.contains_str_at(
1679 (start - leading_whitespace_len).saturating_sub(pair_start.len()),
1680 pair_start,
1681 )
1682 });
1683 }
1684
1685 old_selections.push((
1686 selection.id,
1687 buffer.anchor_after(end),
1688 start..end,
1689 indent,
1690 insert_extra_newline,
1691 ));
1692 }
1693 }
1694
1695 self.buffer.update(cx, |buffer, cx| {
1696 let mut delta = 0_isize;
1697 let mut pending_edit: Option<PendingEdit> = None;
1698 for (_, _, range, indent, insert_extra_newline) in &old_selections {
1699 if pending_edit.as_ref().map_or(false, |pending| {
1700 pending.indent != *indent
1701 || pending.insert_extra_newline != *insert_extra_newline
1702 }) {
1703 let pending = pending_edit.take().unwrap();
1704 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1705 new_text.push('\n');
1706 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1707 if pending.insert_extra_newline {
1708 new_text = new_text.repeat(2);
1709 }
1710 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1711 delta += pending.delta;
1712 }
1713
1714 let start = (range.start as isize + delta) as usize;
1715 let end = (range.end as isize + delta) as usize;
1716 let mut text_len = *indent as usize + 1;
1717 if *insert_extra_newline {
1718 text_len *= 2;
1719 }
1720
1721 let pending = pending_edit.get_or_insert_with(Default::default);
1722 pending.delta += text_len as isize - (end - start) as isize;
1723 pending.indent = *indent;
1724 pending.insert_extra_newline = *insert_extra_newline;
1725 pending.ranges.push(start..end);
1726 }
1727
1728 let pending = pending_edit.unwrap();
1729 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1730 new_text.push('\n');
1731 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1732 if pending.insert_extra_newline {
1733 new_text = new_text.repeat(2);
1734 }
1735 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1736
1737 let buffer = buffer.read(cx);
1738 self.selections = self
1739 .selections
1740 .iter()
1741 .cloned()
1742 .zip(old_selections)
1743 .map(
1744 |(mut new_selection, (_, end_anchor, _, _, insert_extra_newline))| {
1745 let mut cursor = end_anchor.to_point(&buffer);
1746 if insert_extra_newline {
1747 cursor.row -= 1;
1748 cursor.column = buffer.line_len(cursor.row);
1749 }
1750 let anchor = buffer.anchor_after(cursor);
1751 new_selection.start = anchor.clone();
1752 new_selection.end = anchor;
1753 new_selection
1754 },
1755 )
1756 .collect();
1757 });
1758
1759 self.request_autoscroll(Autoscroll::Fit, cx);
1760 self.end_transaction(cx);
1761
1762 #[derive(Default)]
1763 struct PendingEdit {
1764 indent: u32,
1765 insert_extra_newline: bool,
1766 delta: isize,
1767 ranges: SmallVec<[Range<usize>; 32]>,
1768 }
1769 }
1770
1771 pub fn insert(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1772 self.start_transaction(cx);
1773
1774 let old_selections = self.local_selections::<usize>(cx);
1775 let selection_anchors = self.buffer.update(cx, |buffer, cx| {
1776 let anchors = {
1777 let snapshot = buffer.read(cx);
1778 old_selections
1779 .iter()
1780 .map(|s| (s.id, s.goal, snapshot.anchor_after(s.end)))
1781 .collect::<Vec<_>>()
1782 };
1783 let edit_ranges = old_selections.iter().map(|s| s.start..s.end);
1784 buffer.edit_with_autoindent(edit_ranges, text, cx);
1785 anchors
1786 });
1787
1788 let selections = {
1789 let snapshot = self.buffer.read(cx).read(cx);
1790 selection_anchors
1791 .into_iter()
1792 .map(|(id, goal, position)| {
1793 let position = position.to_offset(&snapshot);
1794 Selection {
1795 id,
1796 start: position,
1797 end: position,
1798 goal,
1799 reversed: false,
1800 }
1801 })
1802 .collect()
1803 };
1804 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1805 self.end_transaction(cx);
1806 }
1807
1808 fn trigger_completion_on_input(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1809 let selection = self.newest_anchor_selection();
1810 if self
1811 .buffer
1812 .read(cx)
1813 .is_completion_trigger(selection.head(), text, cx)
1814 {
1815 self.show_completions(&ShowCompletions, cx);
1816 } else {
1817 self.hide_context_menu(cx);
1818 }
1819 }
1820
1821 fn autoclose_pairs(&mut self, cx: &mut ViewContext<Self>) {
1822 let selections = self.local_selections::<usize>(cx);
1823 let mut bracket_pair_state = None;
1824 let mut new_selections = None;
1825 self.buffer.update(cx, |buffer, cx| {
1826 let mut snapshot = buffer.snapshot(cx);
1827 let left_biased_selections = selections
1828 .iter()
1829 .map(|selection| Selection {
1830 id: selection.id,
1831 start: snapshot.anchor_before(selection.start),
1832 end: snapshot.anchor_before(selection.end),
1833 reversed: selection.reversed,
1834 goal: selection.goal,
1835 })
1836 .collect::<Vec<_>>();
1837
1838 let autoclose_pair = snapshot.language().and_then(|language| {
1839 let first_selection_start = selections.first().unwrap().start;
1840 let pair = language.brackets().iter().find(|pair| {
1841 snapshot.contains_str_at(
1842 first_selection_start.saturating_sub(pair.start.len()),
1843 &pair.start,
1844 )
1845 });
1846 pair.and_then(|pair| {
1847 let should_autoclose = selections[1..].iter().all(|selection| {
1848 snapshot.contains_str_at(
1849 selection.start.saturating_sub(pair.start.len()),
1850 &pair.start,
1851 )
1852 });
1853
1854 if should_autoclose {
1855 Some(pair.clone())
1856 } else {
1857 None
1858 }
1859 })
1860 });
1861
1862 if let Some(pair) = autoclose_pair {
1863 let selection_ranges = selections
1864 .iter()
1865 .map(|selection| {
1866 let start = selection.start.to_offset(&snapshot);
1867 start..start
1868 })
1869 .collect::<SmallVec<[_; 32]>>();
1870
1871 buffer.edit(selection_ranges, &pair.end, cx);
1872 snapshot = buffer.snapshot(cx);
1873
1874 new_selections = Some(
1875 self.resolve_selections::<usize, _>(left_biased_selections.iter(), &snapshot)
1876 .collect::<Vec<_>>(),
1877 );
1878
1879 if pair.end.len() == 1 {
1880 let mut delta = 0;
1881 bracket_pair_state = Some(BracketPairState {
1882 ranges: selections
1883 .iter()
1884 .map(move |selection| {
1885 let offset = selection.start + delta;
1886 delta += 1;
1887 snapshot.anchor_before(offset)..snapshot.anchor_after(offset)
1888 })
1889 .collect(),
1890 pair,
1891 });
1892 }
1893 }
1894 });
1895
1896 if let Some(new_selections) = new_selections {
1897 self.update_selections(new_selections, None, cx);
1898 }
1899 if let Some(bracket_pair_state) = bracket_pair_state {
1900 self.autoclose_stack.push(bracket_pair_state);
1901 }
1902 }
1903
1904 fn skip_autoclose_end(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
1905 let old_selections = self.local_selections::<usize>(cx);
1906 let autoclose_pair = if let Some(autoclose_pair) = self.autoclose_stack.last() {
1907 autoclose_pair
1908 } else {
1909 return false;
1910 };
1911 if text != autoclose_pair.pair.end {
1912 return false;
1913 }
1914
1915 debug_assert_eq!(old_selections.len(), autoclose_pair.ranges.len());
1916
1917 let buffer = self.buffer.read(cx).snapshot(cx);
1918 if old_selections
1919 .iter()
1920 .zip(autoclose_pair.ranges.iter().map(|r| r.to_offset(&buffer)))
1921 .all(|(selection, autoclose_range)| {
1922 let autoclose_range_end = autoclose_range.end.to_offset(&buffer);
1923 selection.is_empty() && selection.start == autoclose_range_end
1924 })
1925 {
1926 let new_selections = old_selections
1927 .into_iter()
1928 .map(|selection| {
1929 let cursor = selection.start + 1;
1930 Selection {
1931 id: selection.id,
1932 start: cursor,
1933 end: cursor,
1934 reversed: false,
1935 goal: SelectionGoal::None,
1936 }
1937 })
1938 .collect();
1939 self.autoclose_stack.pop();
1940 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1941 true
1942 } else {
1943 false
1944 }
1945 }
1946
1947 fn completion_query(buffer: &MultiBufferSnapshot, position: impl ToOffset) -> Option<String> {
1948 let offset = position.to_offset(buffer);
1949 let (word_range, kind) = buffer.surrounding_word(offset);
1950 if offset > word_range.start && kind == Some(CharKind::Word) {
1951 Some(
1952 buffer
1953 .text_for_range(word_range.start..offset)
1954 .collect::<String>(),
1955 )
1956 } else {
1957 None
1958 }
1959 }
1960
1961 fn show_completions(&mut self, _: &ShowCompletions, cx: &mut ViewContext<Self>) {
1962 if self.pending_rename.is_some() {
1963 return;
1964 }
1965
1966 let project = if let Some(project) = self.project.clone() {
1967 project
1968 } else {
1969 return;
1970 };
1971
1972 let position = self.newest_anchor_selection().head();
1973 let (buffer, buffer_position) = if let Some(output) = self
1974 .buffer
1975 .read(cx)
1976 .text_anchor_for_position(position.clone(), cx)
1977 {
1978 output
1979 } else {
1980 return;
1981 };
1982
1983 let query = Self::completion_query(&self.buffer.read(cx).read(cx), position.clone());
1984 let completions = project.update(cx, |project, cx| {
1985 project.completions(&buffer, buffer_position.clone(), cx)
1986 });
1987
1988 let id = post_inc(&mut self.next_completion_id);
1989 let task = cx.spawn_weak(|this, mut cx| {
1990 async move {
1991 let completions = completions.await?;
1992 if completions.is_empty() {
1993 return Ok(());
1994 }
1995
1996 let mut menu = CompletionsMenu {
1997 id,
1998 initial_position: position,
1999 match_candidates: completions
2000 .iter()
2001 .enumerate()
2002 .map(|(id, completion)| {
2003 StringMatchCandidate::new(
2004 id,
2005 completion.label.text[completion.label.filter_range.clone()].into(),
2006 )
2007 })
2008 .collect(),
2009 buffer,
2010 completions: completions.into(),
2011 matches: Vec::new().into(),
2012 selected_item: 0,
2013 list: Default::default(),
2014 };
2015
2016 menu.filter(query.as_deref(), cx.background()).await;
2017
2018 if let Some(this) = this.upgrade(&cx) {
2019 this.update(&mut cx, |this, cx| {
2020 match this.context_menu.as_ref() {
2021 None => {}
2022 Some(ContextMenu::Completions(prev_menu)) => {
2023 if prev_menu.id > menu.id {
2024 return;
2025 }
2026 }
2027 _ => return,
2028 }
2029
2030 this.completion_tasks.retain(|(id, _)| *id > menu.id);
2031 if this.focused {
2032 this.show_context_menu(ContextMenu::Completions(menu), cx);
2033 }
2034
2035 cx.notify();
2036 });
2037 }
2038 Ok::<_, anyhow::Error>(())
2039 }
2040 .log_err()
2041 });
2042 self.completion_tasks.push((id, task));
2043 }
2044
2045 pub fn confirm_completion(
2046 &mut self,
2047 ConfirmCompletion(completion_ix): &ConfirmCompletion,
2048 cx: &mut ViewContext<Self>,
2049 ) -> Option<Task<Result<()>>> {
2050 use language::ToOffset as _;
2051
2052 let completions_menu = if let ContextMenu::Completions(menu) = self.hide_context_menu(cx)? {
2053 menu
2054 } else {
2055 return None;
2056 };
2057
2058 let mat = completions_menu
2059 .matches
2060 .get(completion_ix.unwrap_or(completions_menu.selected_item))?;
2061 let buffer_handle = completions_menu.buffer;
2062 let completion = completions_menu.completions.get(mat.candidate_id)?;
2063
2064 let snippet;
2065 let text;
2066 if completion.is_snippet() {
2067 snippet = Some(Snippet::parse(&completion.new_text).log_err()?);
2068 text = snippet.as_ref().unwrap().text.clone();
2069 } else {
2070 snippet = None;
2071 text = completion.new_text.clone();
2072 };
2073 let buffer = buffer_handle.read(cx);
2074 let old_range = completion.old_range.to_offset(&buffer);
2075 let old_text = buffer.text_for_range(old_range.clone()).collect::<String>();
2076
2077 let selections = self.local_selections::<usize>(cx);
2078 let newest_selection = self.newest_anchor_selection();
2079 if newest_selection.start.buffer_id != Some(buffer_handle.id()) {
2080 return None;
2081 }
2082
2083 let lookbehind = newest_selection
2084 .start
2085 .text_anchor
2086 .to_offset(buffer)
2087 .saturating_sub(old_range.start);
2088 let lookahead = old_range
2089 .end
2090 .saturating_sub(newest_selection.end.text_anchor.to_offset(buffer));
2091 let mut common_prefix_len = old_text
2092 .bytes()
2093 .zip(text.bytes())
2094 .take_while(|(a, b)| a == b)
2095 .count();
2096
2097 let snapshot = self.buffer.read(cx).snapshot(cx);
2098 let mut ranges = Vec::new();
2099 for selection in &selections {
2100 if snapshot.contains_str_at(selection.start.saturating_sub(lookbehind), &old_text) {
2101 let start = selection.start.saturating_sub(lookbehind);
2102 let end = selection.end + lookahead;
2103 ranges.push(start + common_prefix_len..end);
2104 } else {
2105 common_prefix_len = 0;
2106 ranges.clear();
2107 ranges.extend(selections.iter().map(|s| {
2108 if s.id == newest_selection.id {
2109 old_range.clone()
2110 } else {
2111 s.start..s.end
2112 }
2113 }));
2114 break;
2115 }
2116 }
2117 let text = &text[common_prefix_len..];
2118
2119 self.start_transaction(cx);
2120 if let Some(mut snippet) = snippet {
2121 snippet.text = text.to_string();
2122 for tabstop in snippet.tabstops.iter_mut().flatten() {
2123 tabstop.start -= common_prefix_len as isize;
2124 tabstop.end -= common_prefix_len as isize;
2125 }
2126
2127 self.insert_snippet(&ranges, snippet, cx).log_err();
2128 } else {
2129 self.buffer.update(cx, |buffer, cx| {
2130 buffer.edit_with_autoindent(ranges, text, cx);
2131 });
2132 }
2133 self.end_transaction(cx);
2134
2135 let project = self.project.clone()?;
2136 let apply_edits = project.update(cx, |project, cx| {
2137 project.apply_additional_edits_for_completion(
2138 buffer_handle,
2139 completion.clone(),
2140 true,
2141 cx,
2142 )
2143 });
2144 Some(cx.foreground().spawn(async move {
2145 apply_edits.await?;
2146 Ok(())
2147 }))
2148 }
2149
2150 pub fn toggle_code_actions(
2151 &mut self,
2152 &ToggleCodeActions(deployed_from_indicator): &ToggleCodeActions,
2153 cx: &mut ViewContext<Self>,
2154 ) {
2155 if matches!(
2156 self.context_menu.as_ref(),
2157 Some(ContextMenu::CodeActions(_))
2158 ) {
2159 self.context_menu.take();
2160 cx.notify();
2161 return;
2162 }
2163
2164 let mut task = self.code_actions_task.take();
2165 cx.spawn_weak(|this, mut cx| async move {
2166 while let Some(prev_task) = task {
2167 prev_task.await;
2168 task = this
2169 .upgrade(&cx)
2170 .and_then(|this| this.update(&mut cx, |this, _| this.code_actions_task.take()));
2171 }
2172
2173 if let Some(this) = this.upgrade(&cx) {
2174 this.update(&mut cx, |this, cx| {
2175 if this.focused {
2176 if let Some((buffer, actions)) = this.available_code_actions.clone() {
2177 this.show_context_menu(
2178 ContextMenu::CodeActions(CodeActionsMenu {
2179 buffer,
2180 actions,
2181 selected_item: Default::default(),
2182 list: Default::default(),
2183 deployed_from_indicator,
2184 }),
2185 cx,
2186 );
2187 }
2188 }
2189 })
2190 }
2191 Ok::<_, anyhow::Error>(())
2192 })
2193 .detach_and_log_err(cx);
2194 }
2195
2196 pub fn confirm_code_action(
2197 workspace: &mut Workspace,
2198 ConfirmCodeAction(action_ix): &ConfirmCodeAction,
2199 cx: &mut ViewContext<Workspace>,
2200 ) -> Option<Task<Result<()>>> {
2201 let editor = workspace.active_item(cx)?.act_as::<Editor>(cx)?;
2202 let actions_menu = if let ContextMenu::CodeActions(menu) =
2203 editor.update(cx, |editor, cx| editor.hide_context_menu(cx))?
2204 {
2205 menu
2206 } else {
2207 return None;
2208 };
2209 let action_ix = action_ix.unwrap_or(actions_menu.selected_item);
2210 let action = actions_menu.actions.get(action_ix)?.clone();
2211 let title = action.lsp_action.title.clone();
2212 let buffer = actions_menu.buffer;
2213
2214 let apply_code_actions = workspace.project().clone().update(cx, |project, cx| {
2215 project.apply_code_action(buffer, action, true, cx)
2216 });
2217 Some(cx.spawn(|workspace, cx| async move {
2218 let project_transaction = apply_code_actions.await?;
2219 Self::open_project_transaction(editor, workspace, project_transaction, title, cx).await
2220 }))
2221 }
2222
2223 async fn open_project_transaction(
2224 this: ViewHandle<Editor>,
2225 workspace: ViewHandle<Workspace>,
2226 transaction: ProjectTransaction,
2227 title: String,
2228 mut cx: AsyncAppContext,
2229 ) -> Result<()> {
2230 let replica_id = this.read_with(&cx, |this, cx| this.replica_id(cx));
2231
2232 // If the code action's edits are all contained within this editor, then
2233 // avoid opening a new editor to display them.
2234 let mut entries = transaction.0.iter();
2235 if let Some((buffer, transaction)) = entries.next() {
2236 if entries.next().is_none() {
2237 let excerpt = this.read_with(&cx, |editor, cx| {
2238 editor
2239 .buffer()
2240 .read(cx)
2241 .excerpt_containing(editor.newest_anchor_selection().head(), cx)
2242 });
2243 if let Some((excerpted_buffer, excerpt_range)) = excerpt {
2244 if excerpted_buffer == *buffer {
2245 let snapshot = buffer.read_with(&cx, |buffer, _| buffer.snapshot());
2246 let excerpt_range = excerpt_range.to_offset(&snapshot);
2247 if snapshot
2248 .edited_ranges_for_transaction(transaction)
2249 .all(|range| {
2250 excerpt_range.start <= range.start && excerpt_range.end >= range.end
2251 })
2252 {
2253 return Ok(());
2254 }
2255 }
2256 }
2257 }
2258 }
2259
2260 let mut ranges_to_highlight = Vec::new();
2261 let excerpt_buffer = cx.add_model(|cx| {
2262 let mut multibuffer = MultiBuffer::new(replica_id).with_title(title);
2263 for (buffer, transaction) in &transaction.0 {
2264 let snapshot = buffer.read(cx).snapshot();
2265 ranges_to_highlight.extend(
2266 multibuffer.push_excerpts_with_context_lines(
2267 buffer.clone(),
2268 snapshot
2269 .edited_ranges_for_transaction::<usize>(transaction)
2270 .collect(),
2271 1,
2272 cx,
2273 ),
2274 );
2275 }
2276 multibuffer.push_transaction(&transaction.0);
2277 multibuffer
2278 });
2279
2280 workspace.update(&mut cx, |workspace, cx| {
2281 let editor = workspace.open_item(MultiBufferItemHandle(excerpt_buffer), cx);
2282 if let Some(editor) = editor.act_as::<Self>(cx) {
2283 editor.update(cx, |editor, cx| {
2284 let color = editor.style(cx).highlighted_line_background;
2285 editor.highlight_ranges::<Self>(ranges_to_highlight, color, cx);
2286 });
2287 }
2288 });
2289
2290 Ok(())
2291 }
2292
2293 fn refresh_code_actions(&mut self, cx: &mut ViewContext<Self>) -> Option<()> {
2294 let project = self.project.as_ref()?;
2295 let buffer = self.buffer.read(cx);
2296 let newest_selection = self.newest_anchor_selection().clone();
2297 let (start_buffer, start) = buffer.text_anchor_for_position(newest_selection.start, cx)?;
2298 let (end_buffer, end) = buffer.text_anchor_for_position(newest_selection.end, cx)?;
2299 if start_buffer != end_buffer {
2300 return None;
2301 }
2302
2303 let actions = project.update(cx, |project, cx| {
2304 project.code_actions(&start_buffer, start..end, cx)
2305 });
2306 self.code_actions_task = Some(cx.spawn_weak(|this, mut cx| async move {
2307 let actions = actions.await;
2308 if let Some(this) = this.upgrade(&cx) {
2309 this.update(&mut cx, |this, cx| {
2310 this.available_code_actions = actions.log_err().and_then(|actions| {
2311 if actions.is_empty() {
2312 None
2313 } else {
2314 Some((start_buffer, actions.into()))
2315 }
2316 });
2317 cx.notify();
2318 })
2319 }
2320 }));
2321 None
2322 }
2323
2324 fn refresh_document_highlights(&mut self, cx: &mut ViewContext<Self>) -> Option<()> {
2325 let project = self.project.as_ref()?;
2326 let buffer = self.buffer.read(cx);
2327 let newest_selection = self.newest_anchor_selection().clone();
2328 let cursor_position = newest_selection.head();
2329 let (cursor_buffer, cursor_buffer_position) =
2330 buffer.text_anchor_for_position(cursor_position.clone(), cx)?;
2331 let (tail_buffer, _) = buffer.text_anchor_for_position(newest_selection.tail(), cx)?;
2332 if cursor_buffer != tail_buffer {
2333 return None;
2334 }
2335
2336 let highlights = project.update(cx, |project, cx| {
2337 project.document_highlights(&cursor_buffer, cursor_buffer_position, cx)
2338 });
2339
2340 enum DocumentHighlightRead {}
2341 enum DocumentHighlightWrite {}
2342
2343 self.document_highlights_task = Some(cx.spawn_weak(|this, mut cx| async move {
2344 let highlights = highlights.log_err().await;
2345 if let Some((this, highlights)) = this.upgrade(&cx).zip(highlights) {
2346 this.update(&mut cx, |this, cx| {
2347 let buffer_id = cursor_position.buffer_id;
2348 let excerpt_id = cursor_position.excerpt_id.clone();
2349 let style = this.style(cx);
2350 let read_background = style.document_highlight_read_background;
2351 let write_background = style.document_highlight_write_background;
2352 let buffer = this.buffer.read(cx);
2353 if !buffer
2354 .text_anchor_for_position(cursor_position, cx)
2355 .map_or(false, |(buffer, _)| buffer == cursor_buffer)
2356 {
2357 return;
2358 }
2359
2360 let mut write_ranges = Vec::new();
2361 let mut read_ranges = Vec::new();
2362 for highlight in highlights {
2363 let range = Anchor {
2364 buffer_id,
2365 excerpt_id: excerpt_id.clone(),
2366 text_anchor: highlight.range.start,
2367 }..Anchor {
2368 buffer_id,
2369 excerpt_id: excerpt_id.clone(),
2370 text_anchor: highlight.range.end,
2371 };
2372 if highlight.kind == lsp::DocumentHighlightKind::WRITE {
2373 write_ranges.push(range);
2374 } else {
2375 read_ranges.push(range);
2376 }
2377 }
2378
2379 this.highlight_ranges::<DocumentHighlightRead>(
2380 read_ranges,
2381 read_background,
2382 cx,
2383 );
2384 this.highlight_ranges::<DocumentHighlightWrite>(
2385 write_ranges,
2386 write_background,
2387 cx,
2388 );
2389 cx.notify();
2390 });
2391 }
2392 }));
2393 None
2394 }
2395
2396 pub fn render_code_actions_indicator(
2397 &self,
2398 style: &EditorStyle,
2399 cx: &mut ViewContext<Self>,
2400 ) -> Option<ElementBox> {
2401 if self.available_code_actions.is_some() {
2402 enum Tag {}
2403 Some(
2404 MouseEventHandler::new::<Tag, _, _>(0, cx, |_, _| {
2405 Svg::new("icons/zap.svg")
2406 .with_color(style.code_actions_indicator)
2407 .boxed()
2408 })
2409 .with_cursor_style(CursorStyle::PointingHand)
2410 .with_padding(Padding::uniform(3.))
2411 .on_mouse_down(|cx| {
2412 cx.dispatch_action(ToggleCodeActions(true));
2413 })
2414 .boxed(),
2415 )
2416 } else {
2417 None
2418 }
2419 }
2420
2421 pub fn context_menu_visible(&self) -> bool {
2422 self.context_menu
2423 .as_ref()
2424 .map_or(false, |menu| menu.visible())
2425 }
2426
2427 pub fn render_context_menu(
2428 &self,
2429 cursor_position: DisplayPoint,
2430 style: EditorStyle,
2431 cx: &AppContext,
2432 ) -> Option<(DisplayPoint, ElementBox)> {
2433 self.context_menu
2434 .as_ref()
2435 .map(|menu| menu.render(cursor_position, style, cx))
2436 }
2437
2438 fn show_context_menu(&mut self, menu: ContextMenu, cx: &mut ViewContext<Self>) {
2439 if !matches!(menu, ContextMenu::Completions(_)) {
2440 self.completion_tasks.clear();
2441 }
2442 self.context_menu = Some(menu);
2443 cx.notify();
2444 }
2445
2446 fn hide_context_menu(&mut self, cx: &mut ViewContext<Self>) -> Option<ContextMenu> {
2447 cx.notify();
2448 self.completion_tasks.clear();
2449 self.context_menu.take()
2450 }
2451
2452 pub fn insert_snippet(
2453 &mut self,
2454 insertion_ranges: &[Range<usize>],
2455 snippet: Snippet,
2456 cx: &mut ViewContext<Self>,
2457 ) -> Result<()> {
2458 let tabstops = self.buffer.update(cx, |buffer, cx| {
2459 buffer.edit_with_autoindent(insertion_ranges.iter().cloned(), &snippet.text, cx);
2460
2461 let snapshot = &*buffer.read(cx);
2462 let snippet = &snippet;
2463 snippet
2464 .tabstops
2465 .iter()
2466 .map(|tabstop| {
2467 let mut tabstop_ranges = tabstop
2468 .iter()
2469 .flat_map(|tabstop_range| {
2470 let mut delta = 0 as isize;
2471 insertion_ranges.iter().map(move |insertion_range| {
2472 let insertion_start = insertion_range.start as isize + delta;
2473 delta +=
2474 snippet.text.len() as isize - insertion_range.len() as isize;
2475
2476 let start = snapshot.anchor_before(
2477 (insertion_start + tabstop_range.start) as usize,
2478 );
2479 let end = snapshot
2480 .anchor_after((insertion_start + tabstop_range.end) as usize);
2481 start..end
2482 })
2483 })
2484 .collect::<Vec<_>>();
2485 tabstop_ranges
2486 .sort_unstable_by(|a, b| a.start.cmp(&b.start, snapshot).unwrap());
2487 tabstop_ranges
2488 })
2489 .collect::<Vec<_>>()
2490 });
2491
2492 if let Some(tabstop) = tabstops.first() {
2493 self.select_ranges(tabstop.iter().cloned(), Some(Autoscroll::Fit), cx);
2494 self.snippet_stack.push(SnippetState {
2495 active_index: 0,
2496 ranges: tabstops,
2497 });
2498 }
2499
2500 Ok(())
2501 }
2502
2503 pub fn move_to_next_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) -> bool {
2504 self.move_to_snippet_tabstop(Bias::Right, cx)
2505 }
2506
2507 pub fn move_to_prev_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) {
2508 self.move_to_snippet_tabstop(Bias::Left, cx);
2509 }
2510
2511 pub fn move_to_snippet_tabstop(&mut self, bias: Bias, cx: &mut ViewContext<Self>) -> bool {
2512 let buffer = self.buffer.read(cx).snapshot(cx);
2513
2514 if let Some(snippet) = self.snippet_stack.last_mut() {
2515 match bias {
2516 Bias::Left => {
2517 if snippet.active_index > 0 {
2518 snippet.active_index -= 1;
2519 } else {
2520 return false;
2521 }
2522 }
2523 Bias::Right => {
2524 if snippet.active_index + 1 < snippet.ranges.len() {
2525 snippet.active_index += 1;
2526 } else {
2527 return false;
2528 }
2529 }
2530 }
2531 if let Some(current_ranges) = snippet.ranges.get(snippet.active_index) {
2532 let new_selections = current_ranges
2533 .iter()
2534 .map(|new_range| {
2535 let new_range = new_range.to_offset(&buffer);
2536 Selection {
2537 id: post_inc(&mut self.next_selection_id),
2538 start: new_range.start,
2539 end: new_range.end,
2540 reversed: false,
2541 goal: SelectionGoal::None,
2542 }
2543 })
2544 .collect();
2545
2546 // Remove the snippet state when moving to the last tabstop.
2547 if snippet.active_index + 1 == snippet.ranges.len() {
2548 self.snippet_stack.pop();
2549 }
2550
2551 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2552 return true;
2553 }
2554 self.snippet_stack.pop();
2555 }
2556
2557 false
2558 }
2559
2560 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
2561 self.start_transaction(cx);
2562 self.select_all(&SelectAll, cx);
2563 self.insert("", cx);
2564 self.end_transaction(cx);
2565 }
2566
2567 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
2568 self.start_transaction(cx);
2569 let mut selections = self.local_selections::<Point>(cx);
2570 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2571 for selection in &mut selections {
2572 if selection.is_empty() {
2573 let head = selection.head().to_display_point(&display_map);
2574 let cursor = movement::left(&display_map, head)
2575 .unwrap()
2576 .to_point(&display_map);
2577 selection.set_head(cursor);
2578 selection.goal = SelectionGoal::None;
2579 }
2580 }
2581 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2582 self.insert("", cx);
2583 self.end_transaction(cx);
2584 }
2585
2586 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
2587 self.start_transaction(cx);
2588 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2589 let mut selections = self.local_selections::<Point>(cx);
2590 for selection in &mut selections {
2591 if selection.is_empty() {
2592 let head = selection.head().to_display_point(&display_map);
2593 let cursor = movement::right(&display_map, head)
2594 .unwrap()
2595 .to_point(&display_map);
2596 selection.set_head(cursor);
2597 selection.goal = SelectionGoal::None;
2598 }
2599 }
2600 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2601 self.insert(&"", cx);
2602 self.end_transaction(cx);
2603 }
2604
2605 pub fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
2606 if self.move_to_next_snippet_tabstop(cx) {
2607 return;
2608 }
2609
2610 self.start_transaction(cx);
2611 let tab_size = self.settings.borrow().tab_size;
2612 let mut selections = self.local_selections::<Point>(cx);
2613 let mut last_indent = None;
2614 self.buffer.update(cx, |buffer, cx| {
2615 for selection in &mut selections {
2616 if selection.is_empty() {
2617 let char_column = buffer
2618 .read(cx)
2619 .text_for_range(Point::new(selection.start.row, 0)..selection.start)
2620 .flat_map(str::chars)
2621 .count();
2622 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
2623 buffer.edit(
2624 [selection.start..selection.start],
2625 " ".repeat(chars_to_next_tab_stop),
2626 cx,
2627 );
2628 selection.start.column += chars_to_next_tab_stop as u32;
2629 selection.end = selection.start;
2630 } else {
2631 let mut start_row = selection.start.row;
2632 let mut end_row = selection.end.row + 1;
2633
2634 // If a selection ends at the beginning of a line, don't indent
2635 // that last line.
2636 if selection.end.column == 0 {
2637 end_row -= 1;
2638 }
2639
2640 // Avoid re-indenting a row that has already been indented by a
2641 // previous selection, but still update this selection's column
2642 // to reflect that indentation.
2643 if let Some((last_indent_row, last_indent_len)) = last_indent {
2644 if last_indent_row == selection.start.row {
2645 selection.start.column += last_indent_len;
2646 start_row += 1;
2647 }
2648 if last_indent_row == selection.end.row {
2649 selection.end.column += last_indent_len;
2650 }
2651 }
2652
2653 for row in start_row..end_row {
2654 let indent_column = buffer.read(cx).indent_column_for_line(row) as usize;
2655 let columns_to_next_tab_stop = tab_size - (indent_column % tab_size);
2656 let row_start = Point::new(row, 0);
2657 buffer.edit(
2658 [row_start..row_start],
2659 " ".repeat(columns_to_next_tab_stop),
2660 cx,
2661 );
2662
2663 // Update this selection's endpoints to reflect the indentation.
2664 if row == selection.start.row {
2665 selection.start.column += columns_to_next_tab_stop as u32;
2666 }
2667 if row == selection.end.row {
2668 selection.end.column += columns_to_next_tab_stop as u32;
2669 }
2670
2671 last_indent = Some((row, columns_to_next_tab_stop as u32));
2672 }
2673 }
2674 }
2675 });
2676
2677 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2678 self.end_transaction(cx);
2679 }
2680
2681 pub fn outdent(&mut self, _: &Outdent, cx: &mut ViewContext<Self>) {
2682 if !self.snippet_stack.is_empty() {
2683 self.move_to_prev_snippet_tabstop(cx);
2684 return;
2685 }
2686
2687 self.start_transaction(cx);
2688 let tab_size = self.settings.borrow().tab_size;
2689 let selections = self.local_selections::<Point>(cx);
2690 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2691 let mut deletion_ranges = Vec::new();
2692 let mut last_outdent = None;
2693 {
2694 let buffer = self.buffer.read(cx).read(cx);
2695 for selection in &selections {
2696 let mut rows = selection.spanned_rows(false, &display_map);
2697
2698 // Avoid re-outdenting a row that has already been outdented by a
2699 // previous selection.
2700 if let Some(last_row) = last_outdent {
2701 if last_row == rows.start {
2702 rows.start += 1;
2703 }
2704 }
2705
2706 for row in rows {
2707 let column = buffer.indent_column_for_line(row) as usize;
2708 if column > 0 {
2709 let mut deletion_len = (column % tab_size) as u32;
2710 if deletion_len == 0 {
2711 deletion_len = tab_size as u32;
2712 }
2713 deletion_ranges.push(Point::new(row, 0)..Point::new(row, deletion_len));
2714 last_outdent = Some(row);
2715 }
2716 }
2717 }
2718 }
2719 self.buffer.update(cx, |buffer, cx| {
2720 buffer.edit(deletion_ranges, "", cx);
2721 });
2722
2723 self.update_selections(
2724 self.local_selections::<usize>(cx),
2725 Some(Autoscroll::Fit),
2726 cx,
2727 );
2728 self.end_transaction(cx);
2729 }
2730
2731 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
2732 self.start_transaction(cx);
2733
2734 let selections = self.local_selections::<Point>(cx);
2735 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2736 let buffer = self.buffer.read(cx).snapshot(cx);
2737
2738 let mut new_cursors = Vec::new();
2739 let mut edit_ranges = Vec::new();
2740 let mut selections = selections.iter().peekable();
2741 while let Some(selection) = selections.next() {
2742 let mut rows = selection.spanned_rows(false, &display_map);
2743 let goal_display_column = selection.head().to_display_point(&display_map).column();
2744
2745 // Accumulate contiguous regions of rows that we want to delete.
2746 while let Some(next_selection) = selections.peek() {
2747 let next_rows = next_selection.spanned_rows(false, &display_map);
2748 if next_rows.start <= rows.end {
2749 rows.end = next_rows.end;
2750 selections.next().unwrap();
2751 } else {
2752 break;
2753 }
2754 }
2755
2756 let mut edit_start = Point::new(rows.start, 0).to_offset(&buffer);
2757 let edit_end;
2758 let cursor_buffer_row;
2759 if buffer.max_point().row >= rows.end {
2760 // If there's a line after the range, delete the \n from the end of the row range
2761 // and position the cursor on the next line.
2762 edit_end = Point::new(rows.end, 0).to_offset(&buffer);
2763 cursor_buffer_row = rows.end;
2764 } else {
2765 // If there isn't a line after the range, delete the \n from the line before the
2766 // start of the row range and position the cursor there.
2767 edit_start = edit_start.saturating_sub(1);
2768 edit_end = buffer.len();
2769 cursor_buffer_row = rows.start.saturating_sub(1);
2770 }
2771
2772 let mut cursor = Point::new(cursor_buffer_row, 0).to_display_point(&display_map);
2773 *cursor.column_mut() =
2774 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
2775
2776 new_cursors.push((
2777 selection.id,
2778 buffer.anchor_after(cursor.to_point(&display_map)),
2779 ));
2780 edit_ranges.push(edit_start..edit_end);
2781 }
2782
2783 let buffer = self.buffer.update(cx, |buffer, cx| {
2784 buffer.edit(edit_ranges, "", cx);
2785 buffer.snapshot(cx)
2786 });
2787 let new_selections = new_cursors
2788 .into_iter()
2789 .map(|(id, cursor)| {
2790 let cursor = cursor.to_point(&buffer);
2791 Selection {
2792 id,
2793 start: cursor,
2794 end: cursor,
2795 reversed: false,
2796 goal: SelectionGoal::None,
2797 }
2798 })
2799 .collect();
2800 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2801 self.end_transaction(cx);
2802 }
2803
2804 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
2805 self.start_transaction(cx);
2806
2807 let selections = self.local_selections::<Point>(cx);
2808 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2809 let buffer = &display_map.buffer_snapshot;
2810
2811 let mut edits = Vec::new();
2812 let mut selections_iter = selections.iter().peekable();
2813 while let Some(selection) = selections_iter.next() {
2814 // Avoid duplicating the same lines twice.
2815 let mut rows = selection.spanned_rows(false, &display_map);
2816
2817 while let Some(next_selection) = selections_iter.peek() {
2818 let next_rows = next_selection.spanned_rows(false, &display_map);
2819 if next_rows.start <= rows.end - 1 {
2820 rows.end = next_rows.end;
2821 selections_iter.next().unwrap();
2822 } else {
2823 break;
2824 }
2825 }
2826
2827 // Copy the text from the selected row region and splice it at the start of the region.
2828 let start = Point::new(rows.start, 0);
2829 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
2830 let text = buffer
2831 .text_for_range(start..end)
2832 .chain(Some("\n"))
2833 .collect::<String>();
2834 edits.push((start, text, rows.len() as u32));
2835 }
2836
2837 self.buffer.update(cx, |buffer, cx| {
2838 for (point, text, _) in edits.into_iter().rev() {
2839 buffer.edit(Some(point..point), text, cx);
2840 }
2841 });
2842
2843 self.request_autoscroll(Autoscroll::Fit, cx);
2844 self.end_transaction(cx);
2845 }
2846
2847 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
2848 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2849 let buffer = self.buffer.read(cx).snapshot(cx);
2850
2851 let mut edits = Vec::new();
2852 let mut unfold_ranges = Vec::new();
2853 let mut refold_ranges = Vec::new();
2854
2855 let selections = self.local_selections::<Point>(cx);
2856 let mut selections = selections.iter().peekable();
2857 let mut contiguous_row_selections = Vec::new();
2858 let mut new_selections = Vec::new();
2859
2860 while let Some(selection) = selections.next() {
2861 // Find all the selections that span a contiguous row range
2862 contiguous_row_selections.push(selection.clone());
2863 let start_row = selection.start.row;
2864 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
2865 display_map.next_line_boundary(selection.end).0.row + 1
2866 } else {
2867 selection.end.row
2868 };
2869
2870 while let Some(next_selection) = selections.peek() {
2871 if next_selection.start.row <= end_row {
2872 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
2873 display_map.next_line_boundary(next_selection.end).0.row + 1
2874 } else {
2875 next_selection.end.row
2876 };
2877 contiguous_row_selections.push(selections.next().unwrap().clone());
2878 } else {
2879 break;
2880 }
2881 }
2882
2883 // Move the text spanned by the row range to be before the line preceding the row range
2884 if start_row > 0 {
2885 let range_to_move = Point::new(start_row - 1, buffer.line_len(start_row - 1))
2886 ..Point::new(end_row - 1, buffer.line_len(end_row - 1));
2887 let insertion_point = display_map
2888 .prev_line_boundary(Point::new(start_row - 1, 0))
2889 .0;
2890
2891 // Don't move lines across excerpts
2892 if buffer
2893 .excerpt_boundaries_in_range((
2894 Bound::Excluded(insertion_point),
2895 Bound::Included(range_to_move.end),
2896 ))
2897 .next()
2898 .is_none()
2899 {
2900 let text = buffer
2901 .text_for_range(range_to_move.clone())
2902 .flat_map(|s| s.chars())
2903 .skip(1)
2904 .chain(['\n'])
2905 .collect::<String>();
2906
2907 edits.push((
2908 buffer.anchor_after(range_to_move.start)
2909 ..buffer.anchor_before(range_to_move.end),
2910 String::new(),
2911 ));
2912 let insertion_anchor = buffer.anchor_after(insertion_point);
2913 edits.push((insertion_anchor.clone()..insertion_anchor, text));
2914
2915 let row_delta = range_to_move.start.row - insertion_point.row + 1;
2916
2917 // Move selections up
2918 new_selections.extend(contiguous_row_selections.drain(..).map(
2919 |mut selection| {
2920 selection.start.row -= row_delta;
2921 selection.end.row -= row_delta;
2922 selection
2923 },
2924 ));
2925
2926 // Move folds up
2927 unfold_ranges.push(range_to_move.clone());
2928 for fold in display_map.folds_in_range(
2929 buffer.anchor_before(range_to_move.start)
2930 ..buffer.anchor_after(range_to_move.end),
2931 ) {
2932 let mut start = fold.start.to_point(&buffer);
2933 let mut end = fold.end.to_point(&buffer);
2934 start.row -= row_delta;
2935 end.row -= row_delta;
2936 refold_ranges.push(start..end);
2937 }
2938 }
2939 }
2940
2941 // If we didn't move line(s), preserve the existing selections
2942 new_selections.extend(contiguous_row_selections.drain(..));
2943 }
2944
2945 self.start_transaction(cx);
2946 self.unfold_ranges(unfold_ranges, cx);
2947 self.buffer.update(cx, |buffer, cx| {
2948 for (range, text) in edits {
2949 buffer.edit([range], text, cx);
2950 }
2951 });
2952 self.fold_ranges(refold_ranges, cx);
2953 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2954 self.end_transaction(cx);
2955 }
2956
2957 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
2958 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2959 let buffer = self.buffer.read(cx).snapshot(cx);
2960
2961 let mut edits = Vec::new();
2962 let mut unfold_ranges = Vec::new();
2963 let mut refold_ranges = Vec::new();
2964
2965 let selections = self.local_selections::<Point>(cx);
2966 let mut selections = selections.iter().peekable();
2967 let mut contiguous_row_selections = Vec::new();
2968 let mut new_selections = Vec::new();
2969
2970 while let Some(selection) = selections.next() {
2971 // Find all the selections that span a contiguous row range
2972 contiguous_row_selections.push(selection.clone());
2973 let start_row = selection.start.row;
2974 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
2975 display_map.next_line_boundary(selection.end).0.row + 1
2976 } else {
2977 selection.end.row
2978 };
2979
2980 while let Some(next_selection) = selections.peek() {
2981 if next_selection.start.row <= end_row {
2982 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
2983 display_map.next_line_boundary(next_selection.end).0.row + 1
2984 } else {
2985 next_selection.end.row
2986 };
2987 contiguous_row_selections.push(selections.next().unwrap().clone());
2988 } else {
2989 break;
2990 }
2991 }
2992
2993 // Move the text spanned by the row range to be after the last line of the row range
2994 if end_row <= buffer.max_point().row {
2995 let range_to_move = Point::new(start_row, 0)..Point::new(end_row, 0);
2996 let insertion_point = display_map.next_line_boundary(Point::new(end_row, 0)).0;
2997
2998 // Don't move lines across excerpt boundaries
2999 if buffer
3000 .excerpt_boundaries_in_range((
3001 Bound::Excluded(range_to_move.start),
3002 Bound::Included(insertion_point),
3003 ))
3004 .next()
3005 .is_none()
3006 {
3007 let mut text = String::from("\n");
3008 text.extend(buffer.text_for_range(range_to_move.clone()));
3009 text.pop(); // Drop trailing newline
3010 edits.push((
3011 buffer.anchor_after(range_to_move.start)
3012 ..buffer.anchor_before(range_to_move.end),
3013 String::new(),
3014 ));
3015 let insertion_anchor = buffer.anchor_after(insertion_point);
3016 edits.push((insertion_anchor.clone()..insertion_anchor, text));
3017
3018 let row_delta = insertion_point.row - range_to_move.end.row + 1;
3019
3020 // Move selections down
3021 new_selections.extend(contiguous_row_selections.drain(..).map(
3022 |mut selection| {
3023 selection.start.row += row_delta;
3024 selection.end.row += row_delta;
3025 selection
3026 },
3027 ));
3028
3029 // Move folds down
3030 unfold_ranges.push(range_to_move.clone());
3031 for fold in display_map.folds_in_range(
3032 buffer.anchor_before(range_to_move.start)
3033 ..buffer.anchor_after(range_to_move.end),
3034 ) {
3035 let mut start = fold.start.to_point(&buffer);
3036 let mut end = fold.end.to_point(&buffer);
3037 start.row += row_delta;
3038 end.row += row_delta;
3039 refold_ranges.push(start..end);
3040 }
3041 }
3042 }
3043
3044 // If we didn't move line(s), preserve the existing selections
3045 new_selections.extend(contiguous_row_selections.drain(..));
3046 }
3047
3048 self.start_transaction(cx);
3049 self.unfold_ranges(unfold_ranges, cx);
3050 self.buffer.update(cx, |buffer, cx| {
3051 for (range, text) in edits {
3052 buffer.edit([range], text, cx);
3053 }
3054 });
3055 self.fold_ranges(refold_ranges, cx);
3056 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3057 self.end_transaction(cx);
3058 }
3059
3060 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
3061 self.start_transaction(cx);
3062 let mut text = String::new();
3063 let mut selections = self.local_selections::<Point>(cx);
3064 let mut clipboard_selections = Vec::with_capacity(selections.len());
3065 {
3066 let buffer = self.buffer.read(cx).read(cx);
3067 let max_point = buffer.max_point();
3068 for selection in &mut selections {
3069 let is_entire_line = selection.is_empty();
3070 if is_entire_line {
3071 selection.start = Point::new(selection.start.row, 0);
3072 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
3073 selection.goal = SelectionGoal::None;
3074 }
3075 let mut len = 0;
3076 for chunk in buffer.text_for_range(selection.start..selection.end) {
3077 text.push_str(chunk);
3078 len += chunk.len();
3079 }
3080 clipboard_selections.push(ClipboardSelection {
3081 len,
3082 is_entire_line,
3083 });
3084 }
3085 }
3086 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3087 self.insert("", cx);
3088 self.end_transaction(cx);
3089
3090 cx.as_mut()
3091 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
3092 }
3093
3094 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
3095 let selections = self.local_selections::<Point>(cx);
3096 let mut text = String::new();
3097 let mut clipboard_selections = Vec::with_capacity(selections.len());
3098 {
3099 let buffer = self.buffer.read(cx).read(cx);
3100 let max_point = buffer.max_point();
3101 for selection in selections.iter() {
3102 let mut start = selection.start;
3103 let mut end = selection.end;
3104 let is_entire_line = selection.is_empty();
3105 if is_entire_line {
3106 start = Point::new(start.row, 0);
3107 end = cmp::min(max_point, Point::new(start.row + 1, 0));
3108 }
3109 let mut len = 0;
3110 for chunk in buffer.text_for_range(start..end) {
3111 text.push_str(chunk);
3112 len += chunk.len();
3113 }
3114 clipboard_selections.push(ClipboardSelection {
3115 len,
3116 is_entire_line,
3117 });
3118 }
3119 }
3120
3121 cx.as_mut()
3122 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
3123 }
3124
3125 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
3126 if let Some(item) = cx.as_mut().read_from_clipboard() {
3127 let clipboard_text = item.text();
3128 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
3129 let mut selections = self.local_selections::<usize>(cx);
3130 let all_selections_were_entire_line =
3131 clipboard_selections.iter().all(|s| s.is_entire_line);
3132 if clipboard_selections.len() != selections.len() {
3133 clipboard_selections.clear();
3134 }
3135
3136 let mut delta = 0_isize;
3137 let mut start_offset = 0;
3138 for (i, selection) in selections.iter_mut().enumerate() {
3139 let to_insert;
3140 let entire_line;
3141 if let Some(clipboard_selection) = clipboard_selections.get(i) {
3142 let end_offset = start_offset + clipboard_selection.len;
3143 to_insert = &clipboard_text[start_offset..end_offset];
3144 entire_line = clipboard_selection.is_entire_line;
3145 start_offset = end_offset
3146 } else {
3147 to_insert = clipboard_text.as_str();
3148 entire_line = all_selections_were_entire_line;
3149 }
3150
3151 selection.start = (selection.start as isize + delta) as usize;
3152 selection.end = (selection.end as isize + delta) as usize;
3153
3154 self.buffer.update(cx, |buffer, cx| {
3155 // If the corresponding selection was empty when this slice of the
3156 // clipboard text was written, then the entire line containing the
3157 // selection was copied. If this selection is also currently empty,
3158 // then paste the line before the current line of the buffer.
3159 let range = if selection.is_empty() && entire_line {
3160 let column = selection.start.to_point(&buffer.read(cx)).column as usize;
3161 let line_start = selection.start - column;
3162 line_start..line_start
3163 } else {
3164 selection.start..selection.end
3165 };
3166
3167 delta += to_insert.len() as isize - range.len() as isize;
3168 buffer.edit([range], to_insert, cx);
3169 selection.start += to_insert.len();
3170 selection.end = selection.start;
3171 });
3172 }
3173 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3174 } else {
3175 self.insert(clipboard_text, cx);
3176 }
3177 }
3178 }
3179
3180 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
3181 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
3182 if let Some((selections, _)) = self.selection_history.get(&tx_id).cloned() {
3183 self.set_selections(selections, None, cx);
3184 }
3185 self.request_autoscroll(Autoscroll::Fit, cx);
3186 }
3187 }
3188
3189 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
3190 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
3191 if let Some((_, Some(selections))) = self.selection_history.get(&tx_id).cloned() {
3192 self.set_selections(selections, None, cx);
3193 }
3194 self.request_autoscroll(Autoscroll::Fit, cx);
3195 }
3196 }
3197
3198 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
3199 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3200 let mut selections = self.local_selections::<Point>(cx);
3201 for selection in &mut selections {
3202 let start = selection.start.to_display_point(&display_map);
3203 let end = selection.end.to_display_point(&display_map);
3204
3205 if start != end {
3206 selection.end = selection.start.clone();
3207 } else {
3208 let cursor = movement::left(&display_map, start)
3209 .unwrap()
3210 .to_point(&display_map);
3211 selection.start = cursor.clone();
3212 selection.end = cursor;
3213 }
3214 selection.reversed = false;
3215 selection.goal = SelectionGoal::None;
3216 }
3217 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3218 }
3219
3220 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
3221 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3222 let mut selections = self.local_selections::<Point>(cx);
3223 for selection in &mut selections {
3224 let head = selection.head().to_display_point(&display_map);
3225 let cursor = movement::left(&display_map, head)
3226 .unwrap()
3227 .to_point(&display_map);
3228 selection.set_head(cursor);
3229 selection.goal = SelectionGoal::None;
3230 }
3231 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3232 }
3233
3234 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
3235 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3236 let mut selections = self.local_selections::<Point>(cx);
3237 for selection in &mut selections {
3238 let start = selection.start.to_display_point(&display_map);
3239 let end = selection.end.to_display_point(&display_map);
3240
3241 if start != end {
3242 selection.start = selection.end.clone();
3243 } else {
3244 let cursor = movement::right(&display_map, end)
3245 .unwrap()
3246 .to_point(&display_map);
3247 selection.start = cursor;
3248 selection.end = cursor;
3249 }
3250 selection.reversed = false;
3251 selection.goal = SelectionGoal::None;
3252 }
3253 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3254 }
3255
3256 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
3257 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3258 let mut selections = self.local_selections::<Point>(cx);
3259 for selection in &mut selections {
3260 let head = selection.head().to_display_point(&display_map);
3261 let cursor = movement::right(&display_map, head)
3262 .unwrap()
3263 .to_point(&display_map);
3264 selection.set_head(cursor);
3265 selection.goal = SelectionGoal::None;
3266 }
3267 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3268 }
3269
3270 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
3271 if self.take_rename(cx).is_some() {
3272 return;
3273 }
3274
3275 if let Some(context_menu) = self.context_menu.as_mut() {
3276 if context_menu.select_prev(cx) {
3277 return;
3278 }
3279 }
3280
3281 if matches!(self.mode, EditorMode::SingleLine) {
3282 cx.propagate_action();
3283 return;
3284 }
3285
3286 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3287 let mut selections = self.local_selections::<Point>(cx);
3288 for selection in &mut selections {
3289 let start = selection.start.to_display_point(&display_map);
3290 let end = selection.end.to_display_point(&display_map);
3291 if start != end {
3292 selection.goal = SelectionGoal::None;
3293 }
3294
3295 let (start, goal) = movement::up(&display_map, start, selection.goal).unwrap();
3296 let cursor = start.to_point(&display_map);
3297 selection.start = cursor;
3298 selection.end = cursor;
3299 selection.goal = goal;
3300 selection.reversed = false;
3301 }
3302 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3303 }
3304
3305 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
3306 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3307 let mut selections = self.local_selections::<Point>(cx);
3308 for selection in &mut selections {
3309 let head = selection.head().to_display_point(&display_map);
3310 let (head, goal) = movement::up(&display_map, head, selection.goal).unwrap();
3311 let cursor = head.to_point(&display_map);
3312 selection.set_head(cursor);
3313 selection.goal = goal;
3314 }
3315 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3316 }
3317
3318 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
3319 self.take_rename(cx);
3320
3321 if let Some(context_menu) = self.context_menu.as_mut() {
3322 if context_menu.select_next(cx) {
3323 return;
3324 }
3325 }
3326
3327 if matches!(self.mode, EditorMode::SingleLine) {
3328 cx.propagate_action();
3329 return;
3330 }
3331
3332 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3333 let mut selections = self.local_selections::<Point>(cx);
3334 for selection in &mut selections {
3335 let start = selection.start.to_display_point(&display_map);
3336 let end = selection.end.to_display_point(&display_map);
3337 if start != end {
3338 selection.goal = SelectionGoal::None;
3339 }
3340
3341 let (start, goal) = movement::down(&display_map, end, selection.goal).unwrap();
3342 let cursor = start.to_point(&display_map);
3343 selection.start = cursor;
3344 selection.end = cursor;
3345 selection.goal = goal;
3346 selection.reversed = false;
3347 }
3348 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3349 }
3350
3351 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
3352 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3353 let mut selections = self.local_selections::<Point>(cx);
3354 for selection in &mut selections {
3355 let head = selection.head().to_display_point(&display_map);
3356 let (head, goal) = movement::down(&display_map, head, selection.goal).unwrap();
3357 let cursor = head.to_point(&display_map);
3358 selection.set_head(cursor);
3359 selection.goal = goal;
3360 }
3361 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3362 }
3363
3364 pub fn move_to_previous_word_boundary(
3365 &mut self,
3366 _: &MoveToPreviousWordBoundary,
3367 cx: &mut ViewContext<Self>,
3368 ) {
3369 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3370 let mut selections = self.local_selections::<Point>(cx);
3371 for selection in &mut selections {
3372 let head = selection.head().to_display_point(&display_map);
3373 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3374 selection.start = cursor.clone();
3375 selection.end = cursor;
3376 selection.reversed = false;
3377 selection.goal = SelectionGoal::None;
3378 }
3379 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3380 }
3381
3382 pub fn select_to_previous_word_boundary(
3383 &mut self,
3384 _: &SelectToPreviousWordBoundary,
3385 cx: &mut ViewContext<Self>,
3386 ) {
3387 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3388 let mut selections = self.local_selections::<Point>(cx);
3389 for selection in &mut selections {
3390 let head = selection.head().to_display_point(&display_map);
3391 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3392 selection.set_head(cursor);
3393 selection.goal = SelectionGoal::None;
3394 }
3395 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3396 }
3397
3398 pub fn delete_to_previous_word_boundary(
3399 &mut self,
3400 _: &DeleteToPreviousWordBoundary,
3401 cx: &mut ViewContext<Self>,
3402 ) {
3403 self.start_transaction(cx);
3404 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3405 let mut selections = self.local_selections::<Point>(cx);
3406 for selection in &mut selections {
3407 if selection.is_empty() {
3408 let head = selection.head().to_display_point(&display_map);
3409 let cursor =
3410 movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3411 selection.set_head(cursor);
3412 selection.goal = SelectionGoal::None;
3413 }
3414 }
3415 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3416 self.insert("", cx);
3417 self.end_transaction(cx);
3418 }
3419
3420 pub fn move_to_next_word_boundary(
3421 &mut self,
3422 _: &MoveToNextWordBoundary,
3423 cx: &mut ViewContext<Self>,
3424 ) {
3425 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3426 let mut selections = self.local_selections::<Point>(cx);
3427 for selection in &mut selections {
3428 let head = selection.head().to_display_point(&display_map);
3429 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
3430 selection.start = cursor;
3431 selection.end = cursor;
3432 selection.reversed = false;
3433 selection.goal = SelectionGoal::None;
3434 }
3435 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3436 }
3437
3438 pub fn select_to_next_word_boundary(
3439 &mut self,
3440 _: &SelectToNextWordBoundary,
3441 cx: &mut ViewContext<Self>,
3442 ) {
3443 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3444 let mut selections = self.local_selections::<Point>(cx);
3445 for selection in &mut selections {
3446 let head = selection.head().to_display_point(&display_map);
3447 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
3448 selection.set_head(cursor);
3449 selection.goal = SelectionGoal::None;
3450 }
3451 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3452 }
3453
3454 pub fn delete_to_next_word_boundary(
3455 &mut self,
3456 _: &DeleteToNextWordBoundary,
3457 cx: &mut ViewContext<Self>,
3458 ) {
3459 self.start_transaction(cx);
3460 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3461 let mut selections = self.local_selections::<Point>(cx);
3462 for selection in &mut selections {
3463 if selection.is_empty() {
3464 let head = selection.head().to_display_point(&display_map);
3465 let cursor =
3466 movement::next_word_boundary(&display_map, head).to_point(&display_map);
3467 selection.set_head(cursor);
3468 selection.goal = SelectionGoal::None;
3469 }
3470 }
3471 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3472 self.insert("", cx);
3473 self.end_transaction(cx);
3474 }
3475
3476 pub fn move_to_beginning_of_line(
3477 &mut self,
3478 _: &MoveToBeginningOfLine,
3479 cx: &mut ViewContext<Self>,
3480 ) {
3481 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3482 let mut selections = self.local_selections::<Point>(cx);
3483 for selection in &mut selections {
3484 let head = selection.head().to_display_point(&display_map);
3485 let new_head = movement::line_beginning(&display_map, head, true);
3486 let cursor = new_head.to_point(&display_map);
3487 selection.start = cursor;
3488 selection.end = cursor;
3489 selection.reversed = false;
3490 selection.goal = SelectionGoal::None;
3491 }
3492 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3493 }
3494
3495 pub fn select_to_beginning_of_line(
3496 &mut self,
3497 SelectToBeginningOfLine(stop_at_soft_boundaries): &SelectToBeginningOfLine,
3498 cx: &mut ViewContext<Self>,
3499 ) {
3500 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3501 let mut selections = self.local_selections::<Point>(cx);
3502 for selection in &mut selections {
3503 let head = selection.head().to_display_point(&display_map);
3504 let new_head = movement::line_beginning(&display_map, head, *stop_at_soft_boundaries);
3505 selection.set_head(new_head.to_point(&display_map));
3506 selection.goal = SelectionGoal::None;
3507 }
3508 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3509 }
3510
3511 pub fn delete_to_beginning_of_line(
3512 &mut self,
3513 _: &DeleteToBeginningOfLine,
3514 cx: &mut ViewContext<Self>,
3515 ) {
3516 self.start_transaction(cx);
3517 self.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
3518 self.backspace(&Backspace, cx);
3519 self.end_transaction(cx);
3520 }
3521
3522 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
3523 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3524 let mut selections = self.local_selections::<Point>(cx);
3525 {
3526 for selection in &mut selections {
3527 let head = selection.head().to_display_point(&display_map);
3528 let new_head = movement::line_end(&display_map, head, true);
3529 let anchor = new_head.to_point(&display_map);
3530 selection.start = anchor.clone();
3531 selection.end = anchor;
3532 selection.reversed = false;
3533 selection.goal = SelectionGoal::None;
3534 }
3535 }
3536 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3537 }
3538
3539 pub fn select_to_end_of_line(
3540 &mut self,
3541 SelectToEndOfLine(stop_at_soft_boundaries): &SelectToEndOfLine,
3542 cx: &mut ViewContext<Self>,
3543 ) {
3544 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3545 let mut selections = self.local_selections::<Point>(cx);
3546 for selection in &mut selections {
3547 let head = selection.head().to_display_point(&display_map);
3548 let new_head = movement::line_end(&display_map, head, *stop_at_soft_boundaries);
3549 selection.set_head(new_head.to_point(&display_map));
3550 selection.goal = SelectionGoal::None;
3551 }
3552 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3553 }
3554
3555 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
3556 self.start_transaction(cx);
3557 self.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3558 self.delete(&Delete, cx);
3559 self.end_transaction(cx);
3560 }
3561
3562 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
3563 self.start_transaction(cx);
3564 self.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3565 self.cut(&Cut, cx);
3566 self.end_transaction(cx);
3567 }
3568
3569 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
3570 if matches!(self.mode, EditorMode::SingleLine) {
3571 cx.propagate_action();
3572 return;
3573 }
3574
3575 let selection = Selection {
3576 id: post_inc(&mut self.next_selection_id),
3577 start: 0,
3578 end: 0,
3579 reversed: false,
3580 goal: SelectionGoal::None,
3581 };
3582 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3583 }
3584
3585 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
3586 let mut selection = self.local_selections::<Point>(cx).last().unwrap().clone();
3587 selection.set_head(Point::zero());
3588 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3589 }
3590
3591 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
3592 if matches!(self.mode, EditorMode::SingleLine) {
3593 cx.propagate_action();
3594 return;
3595 }
3596
3597 let cursor = self.buffer.read(cx).read(cx).len();
3598 let selection = Selection {
3599 id: post_inc(&mut self.next_selection_id),
3600 start: cursor,
3601 end: cursor,
3602 reversed: false,
3603 goal: SelectionGoal::None,
3604 };
3605 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3606 }
3607
3608 pub fn set_nav_history(&mut self, nav_history: Option<ItemNavHistory>) {
3609 self.nav_history = nav_history;
3610 }
3611
3612 pub fn nav_history(&self) -> Option<&ItemNavHistory> {
3613 self.nav_history.as_ref()
3614 }
3615
3616 fn push_to_nav_history(
3617 &self,
3618 position: Anchor,
3619 new_position: Option<Point>,
3620 cx: &mut ViewContext<Self>,
3621 ) {
3622 if let Some(nav_history) = &self.nav_history {
3623 let buffer = self.buffer.read(cx).read(cx);
3624 let offset = position.to_offset(&buffer);
3625 let point = position.to_point(&buffer);
3626 drop(buffer);
3627
3628 if let Some(new_position) = new_position {
3629 let row_delta = (new_position.row as i64 - point.row as i64).abs();
3630 if row_delta < MIN_NAVIGATION_HISTORY_ROW_DELTA {
3631 return;
3632 }
3633 }
3634
3635 nav_history.push(Some(NavigationData {
3636 anchor: position,
3637 offset,
3638 }));
3639 }
3640 }
3641
3642 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
3643 let mut selection = self.local_selections::<usize>(cx).first().unwrap().clone();
3644 selection.set_head(self.buffer.read(cx).read(cx).len());
3645 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3646 }
3647
3648 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
3649 let selection = Selection {
3650 id: post_inc(&mut self.next_selection_id),
3651 start: 0,
3652 end: self.buffer.read(cx).read(cx).len(),
3653 reversed: false,
3654 goal: SelectionGoal::None,
3655 };
3656 self.update_selections(vec![selection], None, cx);
3657 }
3658
3659 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
3660 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3661 let mut selections = self.local_selections::<Point>(cx);
3662 let max_point = display_map.buffer_snapshot.max_point();
3663 for selection in &mut selections {
3664 let rows = selection.spanned_rows(true, &display_map);
3665 selection.start = Point::new(rows.start, 0);
3666 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
3667 selection.reversed = false;
3668 }
3669 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3670 }
3671
3672 pub fn split_selection_into_lines(
3673 &mut self,
3674 _: &SplitSelectionIntoLines,
3675 cx: &mut ViewContext<Self>,
3676 ) {
3677 let mut to_unfold = Vec::new();
3678 let mut new_selections = Vec::new();
3679 {
3680 let selections = self.local_selections::<Point>(cx);
3681 let buffer = self.buffer.read(cx).read(cx);
3682 for selection in selections {
3683 for row in selection.start.row..selection.end.row {
3684 let cursor = Point::new(row, buffer.line_len(row));
3685 new_selections.push(Selection {
3686 id: post_inc(&mut self.next_selection_id),
3687 start: cursor,
3688 end: cursor,
3689 reversed: false,
3690 goal: SelectionGoal::None,
3691 });
3692 }
3693 new_selections.push(Selection {
3694 id: selection.id,
3695 start: selection.end,
3696 end: selection.end,
3697 reversed: false,
3698 goal: SelectionGoal::None,
3699 });
3700 to_unfold.push(selection.start..selection.end);
3701 }
3702 }
3703 self.unfold_ranges(to_unfold, cx);
3704 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3705 }
3706
3707 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
3708 self.add_selection(true, cx);
3709 }
3710
3711 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
3712 self.add_selection(false, cx);
3713 }
3714
3715 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
3716 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3717 let mut selections = self.local_selections::<Point>(cx);
3718 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
3719 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
3720 let range = oldest_selection.display_range(&display_map).sorted();
3721 let columns = cmp::min(range.start.column(), range.end.column())
3722 ..cmp::max(range.start.column(), range.end.column());
3723
3724 selections.clear();
3725 let mut stack = Vec::new();
3726 for row in range.start.row()..=range.end.row() {
3727 if let Some(selection) = self.build_columnar_selection(
3728 &display_map,
3729 row,
3730 &columns,
3731 oldest_selection.reversed,
3732 ) {
3733 stack.push(selection.id);
3734 selections.push(selection);
3735 }
3736 }
3737
3738 if above {
3739 stack.reverse();
3740 }
3741
3742 AddSelectionsState { above, stack }
3743 });
3744
3745 let last_added_selection = *state.stack.last().unwrap();
3746 let mut new_selections = Vec::new();
3747 if above == state.above {
3748 let end_row = if above {
3749 0
3750 } else {
3751 display_map.max_point().row()
3752 };
3753
3754 'outer: for selection in selections {
3755 if selection.id == last_added_selection {
3756 let range = selection.display_range(&display_map).sorted();
3757 debug_assert_eq!(range.start.row(), range.end.row());
3758 let mut row = range.start.row();
3759 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
3760 {
3761 start..end
3762 } else {
3763 cmp::min(range.start.column(), range.end.column())
3764 ..cmp::max(range.start.column(), range.end.column())
3765 };
3766
3767 while row != end_row {
3768 if above {
3769 row -= 1;
3770 } else {
3771 row += 1;
3772 }
3773
3774 if let Some(new_selection) = self.build_columnar_selection(
3775 &display_map,
3776 row,
3777 &columns,
3778 selection.reversed,
3779 ) {
3780 state.stack.push(new_selection.id);
3781 if above {
3782 new_selections.push(new_selection);
3783 new_selections.push(selection);
3784 } else {
3785 new_selections.push(selection);
3786 new_selections.push(new_selection);
3787 }
3788
3789 continue 'outer;
3790 }
3791 }
3792 }
3793
3794 new_selections.push(selection);
3795 }
3796 } else {
3797 new_selections = selections;
3798 new_selections.retain(|s| s.id != last_added_selection);
3799 state.stack.pop();
3800 }
3801
3802 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3803 if state.stack.len() > 1 {
3804 self.add_selections_state = Some(state);
3805 }
3806 }
3807
3808 pub fn select_next(&mut self, action: &SelectNext, cx: &mut ViewContext<Self>) {
3809 let replace_newest = action.0;
3810 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3811 let buffer = &display_map.buffer_snapshot;
3812 let mut selections = self.local_selections::<usize>(cx);
3813 if let Some(mut select_next_state) = self.select_next_state.take() {
3814 let query = &select_next_state.query;
3815 if !select_next_state.done {
3816 let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
3817 let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
3818 let mut next_selected_range = None;
3819
3820 let bytes_after_last_selection =
3821 buffer.bytes_in_range(last_selection.end..buffer.len());
3822 let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
3823 let query_matches = query
3824 .stream_find_iter(bytes_after_last_selection)
3825 .map(|result| (last_selection.end, result))
3826 .chain(
3827 query
3828 .stream_find_iter(bytes_before_first_selection)
3829 .map(|result| (0, result)),
3830 );
3831 for (start_offset, query_match) in query_matches {
3832 let query_match = query_match.unwrap(); // can only fail due to I/O
3833 let offset_range =
3834 start_offset + query_match.start()..start_offset + query_match.end();
3835 let display_range = offset_range.start.to_display_point(&display_map)
3836 ..offset_range.end.to_display_point(&display_map);
3837
3838 if !select_next_state.wordwise
3839 || (!movement::is_inside_word(&display_map, display_range.start)
3840 && !movement::is_inside_word(&display_map, display_range.end))
3841 {
3842 next_selected_range = Some(offset_range);
3843 break;
3844 }
3845 }
3846
3847 if let Some(next_selected_range) = next_selected_range {
3848 if replace_newest {
3849 if let Some(newest_id) =
3850 selections.iter().max_by_key(|s| s.id).map(|s| s.id)
3851 {
3852 selections.retain(|s| s.id != newest_id);
3853 }
3854 }
3855 selections.push(Selection {
3856 id: post_inc(&mut self.next_selection_id),
3857 start: next_selected_range.start,
3858 end: next_selected_range.end,
3859 reversed: false,
3860 goal: SelectionGoal::None,
3861 });
3862 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3863 } else {
3864 select_next_state.done = true;
3865 }
3866 }
3867
3868 self.select_next_state = Some(select_next_state);
3869 } else if selections.len() == 1 {
3870 let selection = selections.last_mut().unwrap();
3871 if selection.start == selection.end {
3872 let word_range = movement::surrounding_word(
3873 &display_map,
3874 selection.start.to_display_point(&display_map),
3875 );
3876 selection.start = word_range.start.to_offset(&display_map, Bias::Left);
3877 selection.end = word_range.end.to_offset(&display_map, Bias::Left);
3878 selection.goal = SelectionGoal::None;
3879 selection.reversed = false;
3880
3881 let query = buffer
3882 .text_for_range(selection.start..selection.end)
3883 .collect::<String>();
3884 let select_state = SelectNextState {
3885 query: AhoCorasick::new_auto_configured(&[query]),
3886 wordwise: true,
3887 done: false,
3888 };
3889 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3890 self.select_next_state = Some(select_state);
3891 } else {
3892 let query = buffer
3893 .text_for_range(selection.start..selection.end)
3894 .collect::<String>();
3895 self.select_next_state = Some(SelectNextState {
3896 query: AhoCorasick::new_auto_configured(&[query]),
3897 wordwise: false,
3898 done: false,
3899 });
3900 self.select_next(action, cx);
3901 }
3902 }
3903 }
3904
3905 pub fn toggle_comments(&mut self, _: &ToggleComments, cx: &mut ViewContext<Self>) {
3906 // Get the line comment prefix. Split its trailing whitespace into a separate string,
3907 // as that portion won't be used for detecting if a line is a comment.
3908 let full_comment_prefix =
3909 if let Some(prefix) = self.language(cx).and_then(|l| l.line_comment_prefix()) {
3910 prefix.to_string()
3911 } else {
3912 return;
3913 };
3914 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
3915 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
3916
3917 self.start_transaction(cx);
3918 let mut selections = self.local_selections::<Point>(cx);
3919 let mut all_selection_lines_are_comments = true;
3920 let mut edit_ranges = Vec::new();
3921 let mut last_toggled_row = None;
3922 self.buffer.update(cx, |buffer, cx| {
3923 for selection in &mut selections {
3924 edit_ranges.clear();
3925 let snapshot = buffer.snapshot(cx);
3926
3927 let end_row =
3928 if selection.end.row > selection.start.row && selection.end.column == 0 {
3929 selection.end.row
3930 } else {
3931 selection.end.row + 1
3932 };
3933
3934 for row in selection.start.row..end_row {
3935 // If multiple selections contain a given row, avoid processing that
3936 // row more than once.
3937 if last_toggled_row == Some(row) {
3938 continue;
3939 } else {
3940 last_toggled_row = Some(row);
3941 }
3942
3943 if snapshot.is_line_blank(row) {
3944 continue;
3945 }
3946
3947 let start = Point::new(row, snapshot.indent_column_for_line(row));
3948 let mut line_bytes = snapshot
3949 .bytes_in_range(start..snapshot.max_point())
3950 .flatten()
3951 .copied();
3952
3953 // If this line currently begins with the line comment prefix, then record
3954 // the range containing the prefix.
3955 if all_selection_lines_are_comments
3956 && line_bytes
3957 .by_ref()
3958 .take(comment_prefix.len())
3959 .eq(comment_prefix.bytes())
3960 {
3961 // Include any whitespace that matches the comment prefix.
3962 let matching_whitespace_len = line_bytes
3963 .zip(comment_prefix_whitespace.bytes())
3964 .take_while(|(a, b)| a == b)
3965 .count() as u32;
3966 let end = Point::new(
3967 row,
3968 start.column + comment_prefix.len() as u32 + matching_whitespace_len,
3969 );
3970 edit_ranges.push(start..end);
3971 }
3972 // If this line does not begin with the line comment prefix, then record
3973 // the position where the prefix should be inserted.
3974 else {
3975 all_selection_lines_are_comments = false;
3976 edit_ranges.push(start..start);
3977 }
3978 }
3979
3980 if !edit_ranges.is_empty() {
3981 if all_selection_lines_are_comments {
3982 buffer.edit(edit_ranges.iter().cloned(), "", cx);
3983 } else {
3984 let min_column = edit_ranges.iter().map(|r| r.start.column).min().unwrap();
3985 let edit_ranges = edit_ranges.iter().map(|range| {
3986 let position = Point::new(range.start.row, min_column);
3987 position..position
3988 });
3989 buffer.edit(edit_ranges, &full_comment_prefix, cx);
3990 }
3991 }
3992 }
3993 });
3994
3995 self.update_selections(
3996 self.local_selections::<usize>(cx),
3997 Some(Autoscroll::Fit),
3998 cx,
3999 );
4000 self.end_transaction(cx);
4001 }
4002
4003 pub fn select_larger_syntax_node(
4004 &mut self,
4005 _: &SelectLargerSyntaxNode,
4006 cx: &mut ViewContext<Self>,
4007 ) {
4008 let old_selections = self.local_selections::<usize>(cx).into_boxed_slice();
4009 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4010 let buffer = self.buffer.read(cx).snapshot(cx);
4011
4012 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
4013 let mut selected_larger_node = false;
4014 let new_selections = old_selections
4015 .iter()
4016 .map(|selection| {
4017 let old_range = selection.start..selection.end;
4018 let mut new_range = old_range.clone();
4019 while let Some(containing_range) =
4020 buffer.range_for_syntax_ancestor(new_range.clone())
4021 {
4022 new_range = containing_range;
4023 if !display_map.intersects_fold(new_range.start)
4024 && !display_map.intersects_fold(new_range.end)
4025 {
4026 break;
4027 }
4028 }
4029
4030 selected_larger_node |= new_range != old_range;
4031 Selection {
4032 id: selection.id,
4033 start: new_range.start,
4034 end: new_range.end,
4035 goal: SelectionGoal::None,
4036 reversed: selection.reversed,
4037 }
4038 })
4039 .collect::<Vec<_>>();
4040
4041 if selected_larger_node {
4042 stack.push(old_selections);
4043 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
4044 }
4045 self.select_larger_syntax_node_stack = stack;
4046 }
4047
4048 pub fn select_smaller_syntax_node(
4049 &mut self,
4050 _: &SelectSmallerSyntaxNode,
4051 cx: &mut ViewContext<Self>,
4052 ) {
4053 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
4054 if let Some(selections) = stack.pop() {
4055 self.update_selections(selections.to_vec(), Some(Autoscroll::Fit), cx);
4056 }
4057 self.select_larger_syntax_node_stack = stack;
4058 }
4059
4060 pub fn move_to_enclosing_bracket(
4061 &mut self,
4062 _: &MoveToEnclosingBracket,
4063 cx: &mut ViewContext<Self>,
4064 ) {
4065 let mut selections = self.local_selections::<usize>(cx);
4066 let buffer = self.buffer.read(cx).snapshot(cx);
4067 for selection in &mut selections {
4068 if let Some((open_range, close_range)) =
4069 buffer.enclosing_bracket_ranges(selection.start..selection.end)
4070 {
4071 let close_range = close_range.to_inclusive();
4072 let destination = if close_range.contains(&selection.start)
4073 && close_range.contains(&selection.end)
4074 {
4075 open_range.end
4076 } else {
4077 *close_range.start()
4078 };
4079 selection.start = destination;
4080 selection.end = destination;
4081 }
4082 }
4083
4084 self.update_selections(selections, Some(Autoscroll::Fit), cx);
4085 }
4086
4087 pub fn show_next_diagnostic(&mut self, _: &ShowNextDiagnostic, cx: &mut ViewContext<Self>) {
4088 let buffer = self.buffer.read(cx).snapshot(cx);
4089 let selection = self.newest_selection_with_snapshot::<usize>(&buffer);
4090 let mut active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
4091 active_diagnostics
4092 .primary_range
4093 .to_offset(&buffer)
4094 .to_inclusive()
4095 });
4096 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
4097 if active_primary_range.contains(&selection.head()) {
4098 *active_primary_range.end()
4099 } else {
4100 selection.head()
4101 }
4102 } else {
4103 selection.head()
4104 };
4105
4106 loop {
4107 let next_group = buffer
4108 .diagnostics_in_range::<_, usize>(search_start..buffer.len())
4109 .find_map(|entry| {
4110 if entry.diagnostic.is_primary
4111 && !entry.range.is_empty()
4112 && Some(entry.range.end) != active_primary_range.as_ref().map(|r| *r.end())
4113 {
4114 Some((entry.range, entry.diagnostic.group_id))
4115 } else {
4116 None
4117 }
4118 });
4119
4120 if let Some((primary_range, group_id)) = next_group {
4121 self.activate_diagnostics(group_id, cx);
4122 self.update_selections(
4123 vec![Selection {
4124 id: selection.id,
4125 start: primary_range.start,
4126 end: primary_range.start,
4127 reversed: false,
4128 goal: SelectionGoal::None,
4129 }],
4130 Some(Autoscroll::Center),
4131 cx,
4132 );
4133 break;
4134 } else if search_start == 0 {
4135 break;
4136 } else {
4137 // Cycle around to the start of the buffer, potentially moving back to the start of
4138 // the currently active diagnostic.
4139 search_start = 0;
4140 active_primary_range.take();
4141 }
4142 }
4143 }
4144
4145 pub fn go_to_definition(
4146 workspace: &mut Workspace,
4147 _: &GoToDefinition,
4148 cx: &mut ViewContext<Workspace>,
4149 ) {
4150 let active_item = workspace.active_item(cx);
4151 let editor_handle = if let Some(editor) = active_item
4152 .as_ref()
4153 .and_then(|item| item.act_as::<Self>(cx))
4154 {
4155 editor
4156 } else {
4157 return;
4158 };
4159
4160 let editor = editor_handle.read(cx);
4161 let head = editor.newest_selection::<usize>(cx).head();
4162 let (buffer, head) =
4163 if let Some(text_anchor) = editor.buffer.read(cx).text_anchor_for_position(head, cx) {
4164 text_anchor
4165 } else {
4166 return;
4167 };
4168
4169 let definitions = workspace
4170 .project()
4171 .update(cx, |project, cx| project.definition(&buffer, head, cx));
4172 cx.spawn(|workspace, mut cx| async move {
4173 let definitions = definitions.await?;
4174 workspace.update(&mut cx, |workspace, cx| {
4175 let nav_history = workspace.active_pane().read(cx).nav_history().clone();
4176 for definition in definitions {
4177 let range = definition.range.to_offset(definition.buffer.read(cx));
4178 let target_editor_handle = workspace
4179 .open_item(BufferItemHandle(definition.buffer), cx)
4180 .downcast::<Self>()
4181 .unwrap();
4182
4183 target_editor_handle.update(cx, |target_editor, cx| {
4184 // When selecting a definition in a different buffer, disable the nav history
4185 // to avoid creating a history entry at the previous cursor location.
4186 if editor_handle != target_editor_handle {
4187 nav_history.borrow_mut().disable();
4188 }
4189 target_editor.select_ranges([range], Some(Autoscroll::Center), cx);
4190 nav_history.borrow_mut().enable();
4191 });
4192 }
4193 });
4194
4195 Ok::<(), anyhow::Error>(())
4196 })
4197 .detach_and_log_err(cx);
4198 }
4199
4200 pub fn find_all_references(
4201 workspace: &mut Workspace,
4202 _: &FindAllReferences,
4203 cx: &mut ViewContext<Workspace>,
4204 ) -> Option<Task<Result<()>>> {
4205 let active_item = workspace.active_item(cx)?;
4206 let editor_handle = active_item.act_as::<Self>(cx)?;
4207
4208 let editor = editor_handle.read(cx);
4209 let head = editor.newest_selection::<usize>(cx).head();
4210 let (buffer, head) = editor.buffer.read(cx).text_anchor_for_position(head, cx)?;
4211 let replica_id = editor.replica_id(cx);
4212
4213 let references = workspace
4214 .project()
4215 .update(cx, |project, cx| project.references(&buffer, head, cx));
4216 Some(cx.spawn(|workspace, mut cx| async move {
4217 let mut locations = references.await?;
4218 if locations.is_empty() {
4219 return Ok(());
4220 }
4221
4222 locations.sort_by_key(|location| location.buffer.id());
4223 let mut locations = locations.into_iter().peekable();
4224 let mut ranges_to_highlight = Vec::new();
4225
4226 let excerpt_buffer = cx.add_model(|cx| {
4227 let mut symbol_name = None;
4228 let mut multibuffer = MultiBuffer::new(replica_id);
4229 while let Some(location) = locations.next() {
4230 let buffer = location.buffer.read(cx);
4231 let mut ranges_for_buffer = Vec::new();
4232 let range = location.range.to_offset(buffer);
4233 ranges_for_buffer.push(range.clone());
4234 if symbol_name.is_none() {
4235 symbol_name = Some(buffer.text_for_range(range).collect::<String>());
4236 }
4237
4238 while let Some(next_location) = locations.peek() {
4239 if next_location.buffer == location.buffer {
4240 ranges_for_buffer.push(next_location.range.to_offset(buffer));
4241 locations.next();
4242 } else {
4243 break;
4244 }
4245 }
4246
4247 ranges_for_buffer.sort_by_key(|range| (range.start, Reverse(range.end)));
4248 ranges_to_highlight.extend(multibuffer.push_excerpts_with_context_lines(
4249 location.buffer.clone(),
4250 ranges_for_buffer,
4251 1,
4252 cx,
4253 ));
4254 }
4255 multibuffer.with_title(format!("References to `{}`", symbol_name.unwrap()))
4256 });
4257
4258 workspace.update(&mut cx, |workspace, cx| {
4259 let editor = workspace.open_item(MultiBufferItemHandle(excerpt_buffer), cx);
4260 if let Some(editor) = editor.act_as::<Self>(cx) {
4261 editor.update(cx, |editor, cx| {
4262 let color = editor.style(cx).highlighted_line_background;
4263 editor.highlight_ranges::<Self>(ranges_to_highlight, color, cx);
4264 });
4265 }
4266 });
4267
4268 Ok(())
4269 }))
4270 }
4271
4272 pub fn rename(&mut self, _: &Rename, cx: &mut ViewContext<Self>) -> Option<Task<Result<()>>> {
4273 use language::ToOffset as _;
4274
4275 let project = self.project.clone()?;
4276 let selection = self.newest_anchor_selection().clone();
4277 let (cursor_buffer, cursor_buffer_position) = self
4278 .buffer
4279 .read(cx)
4280 .text_anchor_for_position(selection.head(), cx)?;
4281 let (tail_buffer, tail_buffer_position) = self
4282 .buffer
4283 .read(cx)
4284 .text_anchor_for_position(selection.tail(), cx)?;
4285 if tail_buffer != cursor_buffer {
4286 return None;
4287 }
4288
4289 let snapshot = cursor_buffer.read(cx).snapshot();
4290 let cursor_buffer_offset = cursor_buffer_position.to_offset(&snapshot);
4291 let tail_buffer_offset = tail_buffer_position.to_offset(&snapshot);
4292 let prepare_rename = project.update(cx, |project, cx| {
4293 project.prepare_rename(cursor_buffer, cursor_buffer_offset, cx)
4294 });
4295
4296 Some(cx.spawn(|this, mut cx| async move {
4297 if let Some(rename_range) = prepare_rename.await? {
4298 let rename_buffer_range = rename_range.to_offset(&snapshot);
4299 let cursor_offset_in_rename_range =
4300 cursor_buffer_offset.saturating_sub(rename_buffer_range.start);
4301 let tail_offset_in_rename_range =
4302 tail_buffer_offset.saturating_sub(rename_buffer_range.start);
4303
4304 this.update(&mut cx, |this, cx| {
4305 this.take_rename(cx);
4306 let style = this.style(cx);
4307 let buffer = this.buffer.read(cx).read(cx);
4308 let cursor_offset = selection.head().to_offset(&buffer);
4309 let rename_start = cursor_offset.saturating_sub(cursor_offset_in_rename_range);
4310 let rename_end = rename_start + rename_buffer_range.len();
4311 let range = buffer.anchor_before(rename_start)..buffer.anchor_after(rename_end);
4312 let old_name = buffer
4313 .text_for_range(rename_start..rename_end)
4314 .collect::<String>();
4315 drop(buffer);
4316
4317 // Position the selection in the rename editor so that it matches the current selection.
4318 let rename_editor = cx.add_view(|cx| {
4319 let mut editor = Editor::single_line(this.settings.clone(), None, cx);
4320 editor
4321 .buffer
4322 .update(cx, |buffer, cx| buffer.edit([0..0], &old_name, cx));
4323 editor.select_ranges(
4324 [tail_offset_in_rename_range..cursor_offset_in_rename_range],
4325 None,
4326 cx,
4327 );
4328 editor.highlight_ranges::<Rename>(
4329 vec![Anchor::min()..Anchor::max()],
4330 style.diff_background_inserted,
4331 cx,
4332 );
4333 editor
4334 });
4335 this.highlight_ranges::<Rename>(
4336 vec![range.clone()],
4337 style.diff_background_deleted,
4338 cx,
4339 );
4340 this.update_selections(
4341 vec![Selection {
4342 id: selection.id,
4343 start: rename_end,
4344 end: rename_end,
4345 reversed: false,
4346 goal: SelectionGoal::None,
4347 }],
4348 None,
4349 cx,
4350 );
4351 cx.focus(&rename_editor);
4352 let block_id = this.insert_blocks(
4353 [BlockProperties {
4354 position: range.start.clone(),
4355 height: 1,
4356 render: Arc::new({
4357 let editor = rename_editor.clone();
4358 move |cx: &BlockContext| {
4359 ChildView::new(editor.clone())
4360 .contained()
4361 .with_padding_left(cx.anchor_x)
4362 .boxed()
4363 }
4364 }),
4365 disposition: BlockDisposition::Below,
4366 }],
4367 cx,
4368 )[0];
4369 this.pending_rename = Some(RenameState {
4370 range,
4371 old_name,
4372 editor: rename_editor,
4373 block_id,
4374 });
4375 });
4376 }
4377
4378 Ok(())
4379 }))
4380 }
4381
4382 pub fn confirm_rename(
4383 workspace: &mut Workspace,
4384 _: &ConfirmRename,
4385 cx: &mut ViewContext<Workspace>,
4386 ) -> Option<Task<Result<()>>> {
4387 let editor = workspace.active_item(cx)?.act_as::<Editor>(cx)?;
4388
4389 let (buffer, range, old_name, new_name) = editor.update(cx, |editor, cx| {
4390 let rename = editor.take_rename(cx)?;
4391 let buffer = editor.buffer.read(cx);
4392 let (start_buffer, start) =
4393 buffer.text_anchor_for_position(rename.range.start.clone(), cx)?;
4394 let (end_buffer, end) =
4395 buffer.text_anchor_for_position(rename.range.end.clone(), cx)?;
4396 if start_buffer == end_buffer {
4397 let new_name = rename.editor.read(cx).text(cx);
4398 Some((start_buffer, start..end, rename.old_name, new_name))
4399 } else {
4400 None
4401 }
4402 })?;
4403
4404 let rename = workspace.project().clone().update(cx, |project, cx| {
4405 project.perform_rename(
4406 buffer.clone(),
4407 range.start.clone(),
4408 new_name.clone(),
4409 true,
4410 cx,
4411 )
4412 });
4413
4414 Some(cx.spawn(|workspace, cx| async move {
4415 let project_transaction = rename.await?;
4416 Self::open_project_transaction(
4417 editor,
4418 workspace,
4419 project_transaction,
4420 format!("Rename: {} → {}", old_name, new_name),
4421 cx,
4422 )
4423 .await
4424 }))
4425 }
4426
4427 fn take_rename(&mut self, cx: &mut ViewContext<Self>) -> Option<RenameState> {
4428 let rename = self.pending_rename.take()?;
4429 self.remove_blocks([rename.block_id].into_iter().collect(), cx);
4430 self.clear_highlighted_ranges::<Rename>(cx);
4431
4432 let editor = rename.editor.read(cx);
4433 let snapshot = self.buffer.read(cx).snapshot(cx);
4434 let selection = editor.newest_selection_with_snapshot::<usize>(&snapshot);
4435
4436 // Update the selection to match the position of the selection inside
4437 // the rename editor.
4438 let rename_range = rename.range.to_offset(&snapshot);
4439 let start = snapshot
4440 .clip_offset(rename_range.start + selection.start, Bias::Left)
4441 .min(rename_range.end);
4442 let end = snapshot
4443 .clip_offset(rename_range.start + selection.end, Bias::Left)
4444 .min(rename_range.end);
4445 self.update_selections(
4446 vec![Selection {
4447 id: self.newest_anchor_selection().id,
4448 start,
4449 end,
4450 reversed: selection.reversed,
4451 goal: SelectionGoal::None,
4452 }],
4453 None,
4454 cx,
4455 );
4456
4457 Some(rename)
4458 }
4459
4460 fn invalidate_rename_range(
4461 &mut self,
4462 buffer: &MultiBufferSnapshot,
4463 cx: &mut ViewContext<Self>,
4464 ) {
4465 if let Some(rename) = self.pending_rename.as_ref() {
4466 if self.selections.len() == 1 {
4467 let head = self.selections[0].head().to_offset(buffer);
4468 let range = rename.range.to_offset(buffer).to_inclusive();
4469 if range.contains(&head) {
4470 return;
4471 }
4472 }
4473 let rename = self.pending_rename.take().unwrap();
4474 self.remove_blocks([rename.block_id].into_iter().collect(), cx);
4475 self.clear_highlighted_ranges::<Rename>(cx);
4476 }
4477 }
4478
4479 #[cfg(any(test, feature = "test-support"))]
4480 pub fn pending_rename(&self) -> Option<&RenameState> {
4481 self.pending_rename.as_ref()
4482 }
4483
4484 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
4485 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
4486 let buffer = self.buffer.read(cx).snapshot(cx);
4487 let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
4488 let is_valid = buffer
4489 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone())
4490 .any(|entry| {
4491 entry.diagnostic.is_primary
4492 && !entry.range.is_empty()
4493 && entry.range.start == primary_range_start
4494 && entry.diagnostic.message == active_diagnostics.primary_message
4495 });
4496
4497 if is_valid != active_diagnostics.is_valid {
4498 active_diagnostics.is_valid = is_valid;
4499 let mut new_styles = HashMap::default();
4500 for (block_id, diagnostic) in &active_diagnostics.blocks {
4501 new_styles.insert(
4502 *block_id,
4503 diagnostic_block_renderer(
4504 diagnostic.clone(),
4505 is_valid,
4506 self.settings.clone(),
4507 ),
4508 );
4509 }
4510 self.display_map
4511 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
4512 }
4513 }
4514 }
4515
4516 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) {
4517 self.dismiss_diagnostics(cx);
4518 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
4519 let buffer = self.buffer.read(cx).snapshot(cx);
4520
4521 let mut primary_range = None;
4522 let mut primary_message = None;
4523 let mut group_end = Point::zero();
4524 let diagnostic_group = buffer
4525 .diagnostic_group::<Point>(group_id)
4526 .map(|entry| {
4527 if entry.range.end > group_end {
4528 group_end = entry.range.end;
4529 }
4530 if entry.diagnostic.is_primary {
4531 primary_range = Some(entry.range.clone());
4532 primary_message = Some(entry.diagnostic.message.clone());
4533 }
4534 entry
4535 })
4536 .collect::<Vec<_>>();
4537 let primary_range = primary_range.unwrap();
4538 let primary_message = primary_message.unwrap();
4539 let primary_range =
4540 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
4541
4542 let blocks = display_map
4543 .insert_blocks(
4544 diagnostic_group.iter().map(|entry| {
4545 let diagnostic = entry.diagnostic.clone();
4546 let message_height = diagnostic.message.lines().count() as u8;
4547 BlockProperties {
4548 position: buffer.anchor_after(entry.range.start),
4549 height: message_height,
4550 render: diagnostic_block_renderer(
4551 diagnostic,
4552 true,
4553 self.settings.clone(),
4554 ),
4555 disposition: BlockDisposition::Below,
4556 }
4557 }),
4558 cx,
4559 )
4560 .into_iter()
4561 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
4562 .collect();
4563
4564 Some(ActiveDiagnosticGroup {
4565 primary_range,
4566 primary_message,
4567 blocks,
4568 is_valid: true,
4569 })
4570 });
4571 }
4572
4573 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
4574 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
4575 self.display_map.update(cx, |display_map, cx| {
4576 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
4577 });
4578 cx.notify();
4579 }
4580 }
4581
4582 fn build_columnar_selection(
4583 &mut self,
4584 display_map: &DisplaySnapshot,
4585 row: u32,
4586 columns: &Range<u32>,
4587 reversed: bool,
4588 ) -> Option<Selection<Point>> {
4589 let is_empty = columns.start == columns.end;
4590 let line_len = display_map.line_len(row);
4591 if columns.start < line_len || (is_empty && columns.start == line_len) {
4592 let start = DisplayPoint::new(row, columns.start);
4593 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
4594 Some(Selection {
4595 id: post_inc(&mut self.next_selection_id),
4596 start: start.to_point(display_map),
4597 end: end.to_point(display_map),
4598 reversed,
4599 goal: SelectionGoal::ColumnRange {
4600 start: columns.start,
4601 end: columns.end,
4602 },
4603 })
4604 } else {
4605 None
4606 }
4607 }
4608
4609 pub fn local_selections_in_range(
4610 &self,
4611 range: Range<Anchor>,
4612 display_map: &DisplaySnapshot,
4613 ) -> Vec<Selection<Point>> {
4614 let buffer = &display_map.buffer_snapshot;
4615
4616 let start_ix = match self
4617 .selections
4618 .binary_search_by(|probe| probe.end.cmp(&range.start, &buffer).unwrap())
4619 {
4620 Ok(ix) | Err(ix) => ix,
4621 };
4622 let end_ix = match self
4623 .selections
4624 .binary_search_by(|probe| probe.start.cmp(&range.end, &buffer).unwrap())
4625 {
4626 Ok(ix) => ix + 1,
4627 Err(ix) => ix,
4628 };
4629
4630 fn point_selection(
4631 selection: &Selection<Anchor>,
4632 buffer: &MultiBufferSnapshot,
4633 ) -> Selection<Point> {
4634 let start = selection.start.to_point(&buffer);
4635 let end = selection.end.to_point(&buffer);
4636 Selection {
4637 id: selection.id,
4638 start,
4639 end,
4640 reversed: selection.reversed,
4641 goal: selection.goal,
4642 }
4643 }
4644
4645 self.selections[start_ix..end_ix]
4646 .iter()
4647 .chain(
4648 self.pending_selection
4649 .as_ref()
4650 .map(|pending| &pending.selection),
4651 )
4652 .map(|s| point_selection(s, &buffer))
4653 .collect()
4654 }
4655
4656 pub fn local_selections<'a, D>(&self, cx: &'a AppContext) -> Vec<Selection<D>>
4657 where
4658 D: 'a + TextDimension + Ord + Sub<D, Output = D>,
4659 {
4660 let buffer = self.buffer.read(cx).snapshot(cx);
4661 let mut selections = self
4662 .resolve_selections::<D, _>(self.selections.iter(), &buffer)
4663 .peekable();
4664
4665 let mut pending_selection = self.pending_selection::<D>(&buffer);
4666
4667 iter::from_fn(move || {
4668 if let Some(pending) = pending_selection.as_mut() {
4669 while let Some(next_selection) = selections.peek() {
4670 if pending.start <= next_selection.end && pending.end >= next_selection.start {
4671 let next_selection = selections.next().unwrap();
4672 if next_selection.start < pending.start {
4673 pending.start = next_selection.start;
4674 }
4675 if next_selection.end > pending.end {
4676 pending.end = next_selection.end;
4677 }
4678 } else if next_selection.end < pending.start {
4679 return selections.next();
4680 } else {
4681 break;
4682 }
4683 }
4684
4685 pending_selection.take()
4686 } else {
4687 selections.next()
4688 }
4689 })
4690 .collect()
4691 }
4692
4693 fn resolve_selections<'a, D, I>(
4694 &self,
4695 selections: I,
4696 snapshot: &MultiBufferSnapshot,
4697 ) -> impl 'a + Iterator<Item = Selection<D>>
4698 where
4699 D: TextDimension + Ord + Sub<D, Output = D>,
4700 I: 'a + IntoIterator<Item = &'a Selection<Anchor>>,
4701 {
4702 let (to_summarize, selections) = selections.into_iter().tee();
4703 let mut summaries = snapshot
4704 .summaries_for_anchors::<D, _>(to_summarize.flat_map(|s| [&s.start, &s.end]))
4705 .into_iter();
4706 selections.map(move |s| Selection {
4707 id: s.id,
4708 start: summaries.next().unwrap(),
4709 end: summaries.next().unwrap(),
4710 reversed: s.reversed,
4711 goal: s.goal,
4712 })
4713 }
4714
4715 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4716 &self,
4717 snapshot: &MultiBufferSnapshot,
4718 ) -> Option<Selection<D>> {
4719 self.pending_selection
4720 .as_ref()
4721 .map(|pending| self.resolve_selection(&pending.selection, &snapshot))
4722 }
4723
4724 fn resolve_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4725 &self,
4726 selection: &Selection<Anchor>,
4727 buffer: &MultiBufferSnapshot,
4728 ) -> Selection<D> {
4729 Selection {
4730 id: selection.id,
4731 start: selection.start.summary::<D>(&buffer),
4732 end: selection.end.summary::<D>(&buffer),
4733 reversed: selection.reversed,
4734 goal: selection.goal,
4735 }
4736 }
4737
4738 fn selection_count<'a>(&self) -> usize {
4739 let mut count = self.selections.len();
4740 if self.pending_selection.is_some() {
4741 count += 1;
4742 }
4743 count
4744 }
4745
4746 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4747 &self,
4748 cx: &AppContext,
4749 ) -> Selection<D> {
4750 let snapshot = self.buffer.read(cx).read(cx);
4751 self.selections
4752 .iter()
4753 .min_by_key(|s| s.id)
4754 .map(|selection| self.resolve_selection(selection, &snapshot))
4755 .or_else(|| self.pending_selection(&snapshot))
4756 .unwrap()
4757 }
4758
4759 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4760 &self,
4761 cx: &AppContext,
4762 ) -> Selection<D> {
4763 self.resolve_selection(
4764 self.newest_anchor_selection(),
4765 &self.buffer.read(cx).read(cx),
4766 )
4767 }
4768
4769 pub fn newest_selection_with_snapshot<D: TextDimension + Ord + Sub<D, Output = D>>(
4770 &self,
4771 snapshot: &MultiBufferSnapshot,
4772 ) -> Selection<D> {
4773 self.resolve_selection(self.newest_anchor_selection(), snapshot)
4774 }
4775
4776 pub fn newest_anchor_selection(&self) -> &Selection<Anchor> {
4777 self.pending_selection
4778 .as_ref()
4779 .map(|s| &s.selection)
4780 .or_else(|| self.selections.iter().max_by_key(|s| s.id))
4781 .unwrap()
4782 }
4783
4784 pub fn update_selections<T>(
4785 &mut self,
4786 mut selections: Vec<Selection<T>>,
4787 autoscroll: Option<Autoscroll>,
4788 cx: &mut ViewContext<Self>,
4789 ) where
4790 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
4791 {
4792 let buffer = self.buffer.read(cx).snapshot(cx);
4793 selections.sort_unstable_by_key(|s| s.start);
4794
4795 // Merge overlapping selections.
4796 let mut i = 1;
4797 while i < selections.len() {
4798 if selections[i - 1].end >= selections[i].start {
4799 let removed = selections.remove(i);
4800 if removed.start < selections[i - 1].start {
4801 selections[i - 1].start = removed.start;
4802 }
4803 if removed.end > selections[i - 1].end {
4804 selections[i - 1].end = removed.end;
4805 }
4806 } else {
4807 i += 1;
4808 }
4809 }
4810
4811 if let Some(autoscroll) = autoscroll {
4812 self.request_autoscroll(autoscroll, cx);
4813 }
4814
4815 self.set_selections(
4816 Arc::from_iter(selections.into_iter().map(|selection| {
4817 let end_bias = if selection.end > selection.start {
4818 Bias::Left
4819 } else {
4820 Bias::Right
4821 };
4822 Selection {
4823 id: selection.id,
4824 start: buffer.anchor_after(selection.start),
4825 end: buffer.anchor_at(selection.end, end_bias),
4826 reversed: selection.reversed,
4827 goal: selection.goal,
4828 }
4829 })),
4830 None,
4831 cx,
4832 );
4833 }
4834
4835 /// Compute new ranges for any selections that were located in excerpts that have
4836 /// since been removed.
4837 ///
4838 /// Returns a `HashMap` indicating which selections whose former head position
4839 /// was no longer present. The keys of the map are selection ids. The values are
4840 /// the id of the new excerpt where the head of the selection has been moved.
4841 pub fn refresh_selections(&mut self, cx: &mut ViewContext<Self>) -> HashMap<usize, ExcerptId> {
4842 let snapshot = self.buffer.read(cx).read(cx);
4843 let anchors_with_status = snapshot.refresh_anchors(
4844 self.selections
4845 .iter()
4846 .flat_map(|selection| [&selection.start, &selection.end]),
4847 );
4848 let offsets =
4849 snapshot.summaries_for_anchors::<usize, _>(anchors_with_status.iter().map(|a| &a.1));
4850 let offsets = offsets.chunks(2);
4851 let statuses = anchors_with_status
4852 .chunks(2)
4853 .map(|a| (a[0].0 / 2, a[0].2, a[1].2));
4854
4855 let mut selections_with_lost_position = HashMap::default();
4856 let new_selections = offsets
4857 .zip(statuses)
4858 .map(|(offsets, (selection_ix, kept_start, kept_end))| {
4859 let selection = &self.selections[selection_ix];
4860 let kept_head = if selection.reversed {
4861 kept_start
4862 } else {
4863 kept_end
4864 };
4865 if !kept_head {
4866 selections_with_lost_position
4867 .insert(selection.id, selection.head().excerpt_id.clone());
4868 }
4869
4870 Selection {
4871 id: selection.id,
4872 start: offsets[0],
4873 end: offsets[1],
4874 reversed: selection.reversed,
4875 goal: selection.goal,
4876 }
4877 })
4878 .collect();
4879 drop(snapshot);
4880 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
4881 selections_with_lost_position
4882 }
4883
4884 fn set_selections(
4885 &mut self,
4886 selections: Arc<[Selection<Anchor>]>,
4887 pending_selection: Option<PendingSelection>,
4888 cx: &mut ViewContext<Self>,
4889 ) {
4890 let old_cursor_position = self.newest_anchor_selection().head();
4891
4892 self.selections = selections;
4893 self.pending_selection = pending_selection;
4894 if self.focused {
4895 self.buffer.update(cx, |buffer, cx| {
4896 buffer.set_active_selections(&self.selections, cx)
4897 });
4898 }
4899
4900 let display_map = self
4901 .display_map
4902 .update(cx, |display_map, cx| display_map.snapshot(cx));
4903 let buffer = &display_map.buffer_snapshot;
4904 self.add_selections_state = None;
4905 self.select_next_state = None;
4906 self.select_larger_syntax_node_stack.clear();
4907 self.autoclose_stack.invalidate(&self.selections, &buffer);
4908 self.snippet_stack.invalidate(&self.selections, &buffer);
4909 self.invalidate_rename_range(&buffer, cx);
4910
4911 let new_cursor_position = self.newest_anchor_selection().head();
4912
4913 self.push_to_nav_history(
4914 old_cursor_position.clone(),
4915 Some(new_cursor_position.to_point(&buffer)),
4916 cx,
4917 );
4918
4919 let completion_menu = match self.context_menu.as_mut() {
4920 Some(ContextMenu::Completions(menu)) => Some(menu),
4921 _ => {
4922 self.context_menu.take();
4923 None
4924 }
4925 };
4926
4927 if let Some(completion_menu) = completion_menu {
4928 let cursor_position = new_cursor_position.to_offset(&buffer);
4929 let (word_range, kind) =
4930 buffer.surrounding_word(completion_menu.initial_position.clone());
4931 if kind == Some(CharKind::Word) && word_range.to_inclusive().contains(&cursor_position)
4932 {
4933 let query = Self::completion_query(&buffer, cursor_position);
4934 cx.background()
4935 .block(completion_menu.filter(query.as_deref(), cx.background().clone()));
4936 self.show_completions(&ShowCompletions, cx);
4937 } else {
4938 self.hide_context_menu(cx);
4939 }
4940 }
4941
4942 if old_cursor_position.to_display_point(&display_map).row()
4943 != new_cursor_position.to_display_point(&display_map).row()
4944 {
4945 self.available_code_actions.take();
4946 }
4947 self.refresh_code_actions(cx);
4948 self.refresh_document_highlights(cx);
4949
4950 self.pause_cursor_blinking(cx);
4951 cx.emit(Event::SelectionsChanged);
4952 }
4953
4954 pub fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
4955 self.autoscroll_request = Some(autoscroll);
4956 cx.notify();
4957 }
4958
4959 fn start_transaction(&mut self, cx: &mut ViewContext<Self>) {
4960 self.start_transaction_at(Instant::now(), cx);
4961 }
4962
4963 fn start_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
4964 self.end_selection(cx);
4965 if let Some(tx_id) = self
4966 .buffer
4967 .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
4968 {
4969 self.selection_history
4970 .insert(tx_id, (self.selections.clone(), None));
4971 }
4972 }
4973
4974 fn end_transaction(&mut self, cx: &mut ViewContext<Self>) {
4975 self.end_transaction_at(Instant::now(), cx);
4976 }
4977
4978 fn end_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
4979 if let Some(tx_id) = self
4980 .buffer
4981 .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
4982 {
4983 if let Some((_, end_selections)) = self.selection_history.get_mut(&tx_id) {
4984 *end_selections = Some(self.selections.clone());
4985 } else {
4986 log::error!("unexpectedly ended a transaction that wasn't started by this editor");
4987 }
4988 }
4989 }
4990
4991 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
4992 log::info!("Editor::page_up");
4993 }
4994
4995 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
4996 log::info!("Editor::page_down");
4997 }
4998
4999 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
5000 let mut fold_ranges = Vec::new();
5001
5002 let selections = self.local_selections::<Point>(cx);
5003 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
5004 for selection in selections {
5005 let range = selection.display_range(&display_map).sorted();
5006 let buffer_start_row = range.start.to_point(&display_map).row;
5007
5008 for row in (0..=range.end.row()).rev() {
5009 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
5010 let fold_range = self.foldable_range_for_line(&display_map, row);
5011 if fold_range.end.row >= buffer_start_row {
5012 fold_ranges.push(fold_range);
5013 if row <= range.start.row() {
5014 break;
5015 }
5016 }
5017 }
5018 }
5019 }
5020
5021 self.fold_ranges(fold_ranges, cx);
5022 }
5023
5024 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
5025 let selections = self.local_selections::<Point>(cx);
5026 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
5027 let buffer = &display_map.buffer_snapshot;
5028 let ranges = selections
5029 .iter()
5030 .map(|s| {
5031 let range = s.display_range(&display_map).sorted();
5032 let mut start = range.start.to_point(&display_map);
5033 let mut end = range.end.to_point(&display_map);
5034 start.column = 0;
5035 end.column = buffer.line_len(end.row);
5036 start..end
5037 })
5038 .collect::<Vec<_>>();
5039 self.unfold_ranges(ranges, cx);
5040 }
5041
5042 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
5043 let max_point = display_map.max_point();
5044 if display_row >= max_point.row() {
5045 false
5046 } else {
5047 let (start_indent, is_blank) = display_map.line_indent(display_row);
5048 if is_blank {
5049 false
5050 } else {
5051 for display_row in display_row + 1..=max_point.row() {
5052 let (indent, is_blank) = display_map.line_indent(display_row);
5053 if !is_blank {
5054 return indent > start_indent;
5055 }
5056 }
5057 false
5058 }
5059 }
5060 }
5061
5062 fn foldable_range_for_line(
5063 &self,
5064 display_map: &DisplaySnapshot,
5065 start_row: u32,
5066 ) -> Range<Point> {
5067 let max_point = display_map.max_point();
5068
5069 let (start_indent, _) = display_map.line_indent(start_row);
5070 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
5071 let mut end = None;
5072 for row in start_row + 1..=max_point.row() {
5073 let (indent, is_blank) = display_map.line_indent(row);
5074 if !is_blank && indent <= start_indent {
5075 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
5076 break;
5077 }
5078 }
5079
5080 let end = end.unwrap_or(max_point);
5081 return start.to_point(display_map)..end.to_point(display_map);
5082 }
5083
5084 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
5085 let selections = self.local_selections::<Point>(cx);
5086 let ranges = selections.into_iter().map(|s| s.start..s.end);
5087 self.fold_ranges(ranges, cx);
5088 }
5089
5090 fn fold_ranges<T: ToOffset>(
5091 &mut self,
5092 ranges: impl IntoIterator<Item = Range<T>>,
5093 cx: &mut ViewContext<Self>,
5094 ) {
5095 let mut ranges = ranges.into_iter().peekable();
5096 if ranges.peek().is_some() {
5097 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
5098 self.request_autoscroll(Autoscroll::Fit, cx);
5099 cx.notify();
5100 }
5101 }
5102
5103 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
5104 if !ranges.is_empty() {
5105 self.display_map
5106 .update(cx, |map, cx| map.unfold(ranges, cx));
5107 self.request_autoscroll(Autoscroll::Fit, cx);
5108 cx.notify();
5109 }
5110 }
5111
5112 pub fn insert_blocks(
5113 &mut self,
5114 blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
5115 cx: &mut ViewContext<Self>,
5116 ) -> Vec<BlockId> {
5117 let blocks = self
5118 .display_map
5119 .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
5120 self.request_autoscroll(Autoscroll::Fit, cx);
5121 blocks
5122 }
5123
5124 pub fn replace_blocks(
5125 &mut self,
5126 blocks: HashMap<BlockId, RenderBlock>,
5127 cx: &mut ViewContext<Self>,
5128 ) {
5129 self.display_map
5130 .update(cx, |display_map, _| display_map.replace_blocks(blocks));
5131 self.request_autoscroll(Autoscroll::Fit, cx);
5132 }
5133
5134 pub fn remove_blocks(&mut self, block_ids: HashSet<BlockId>, cx: &mut ViewContext<Self>) {
5135 self.display_map.update(cx, |display_map, cx| {
5136 display_map.remove_blocks(block_ids, cx)
5137 });
5138 }
5139
5140 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
5141 self.display_map
5142 .update(cx, |map, cx| map.snapshot(cx))
5143 .longest_row()
5144 }
5145
5146 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
5147 self.display_map
5148 .update(cx, |map, cx| map.snapshot(cx))
5149 .max_point()
5150 }
5151
5152 pub fn text(&self, cx: &AppContext) -> String {
5153 self.buffer.read(cx).read(cx).text()
5154 }
5155
5156 pub fn set_text(&mut self, text: impl Into<String>, cx: &mut ViewContext<Self>) {
5157 self.buffer
5158 .read(cx)
5159 .as_singleton()
5160 .expect("you can only call set_text on editors for singleton buffers")
5161 .update(cx, |buffer, cx| buffer.set_text(text, cx));
5162 }
5163
5164 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
5165 self.display_map
5166 .update(cx, |map, cx| map.snapshot(cx))
5167 .text()
5168 }
5169
5170 pub fn soft_wrap_mode(&self, cx: &AppContext) -> SoftWrap {
5171 let language = self.language(cx);
5172 let settings = self.settings.borrow();
5173 let mode = self
5174 .soft_wrap_mode_override
5175 .unwrap_or_else(|| settings.soft_wrap(language));
5176 match mode {
5177 settings::SoftWrap::None => SoftWrap::None,
5178 settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
5179 settings::SoftWrap::PreferredLineLength => {
5180 SoftWrap::Column(settings.preferred_line_length(language))
5181 }
5182 }
5183 }
5184
5185 pub fn set_soft_wrap_mode(&mut self, mode: settings::SoftWrap, cx: &mut ViewContext<Self>) {
5186 self.soft_wrap_mode_override = Some(mode);
5187 cx.notify();
5188 }
5189
5190 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
5191 self.display_map
5192 .update(cx, |map, cx| map.set_wrap_width(width, cx))
5193 }
5194
5195 pub fn set_highlighted_rows(&mut self, rows: Option<Range<u32>>) {
5196 self.highlighted_rows = rows;
5197 }
5198
5199 pub fn highlighted_rows(&self) -> Option<Range<u32>> {
5200 self.highlighted_rows.clone()
5201 }
5202
5203 pub fn highlight_ranges<T: 'static>(
5204 &mut self,
5205 ranges: Vec<Range<Anchor>>,
5206 color: Color,
5207 cx: &mut ViewContext<Self>,
5208 ) {
5209 self.highlighted_ranges
5210 .insert(TypeId::of::<T>(), (color, ranges));
5211 cx.notify();
5212 }
5213
5214 pub fn clear_highlighted_ranges<T: 'static>(
5215 &mut self,
5216 cx: &mut ViewContext<Self>,
5217 ) -> Option<(Color, Vec<Range<Anchor>>)> {
5218 cx.notify();
5219 self.highlighted_ranges.remove(&TypeId::of::<T>())
5220 }
5221
5222 #[cfg(feature = "test-support")]
5223 pub fn all_highlighted_ranges(
5224 &mut self,
5225 cx: &mut ViewContext<Self>,
5226 ) -> Vec<(Range<DisplayPoint>, Color)> {
5227 let snapshot = self.snapshot(cx);
5228 let buffer = &snapshot.buffer_snapshot;
5229 let start = buffer.anchor_before(0);
5230 let end = buffer.anchor_after(buffer.len());
5231 self.highlighted_ranges_in_range(start..end, &snapshot)
5232 }
5233
5234 pub fn highlighted_ranges_for_type<T: 'static>(&self) -> Option<(Color, &[Range<Anchor>])> {
5235 self.highlighted_ranges
5236 .get(&TypeId::of::<T>())
5237 .map(|(color, ranges)| (*color, ranges.as_slice()))
5238 }
5239
5240 pub fn highlighted_ranges_in_range(
5241 &self,
5242 search_range: Range<Anchor>,
5243 display_snapshot: &DisplaySnapshot,
5244 ) -> Vec<(Range<DisplayPoint>, Color)> {
5245 let mut results = Vec::new();
5246 let buffer = &display_snapshot.buffer_snapshot;
5247 for (color, ranges) in self.highlighted_ranges.values() {
5248 let start_ix = match ranges.binary_search_by(|probe| {
5249 let cmp = probe.end.cmp(&search_range.start, &buffer).unwrap();
5250 if cmp.is_gt() {
5251 Ordering::Greater
5252 } else {
5253 Ordering::Less
5254 }
5255 }) {
5256 Ok(i) | Err(i) => i,
5257 };
5258 for range in &ranges[start_ix..] {
5259 if range.start.cmp(&search_range.end, &buffer).unwrap().is_ge() {
5260 break;
5261 }
5262 let start = range
5263 .start
5264 .to_point(buffer)
5265 .to_display_point(display_snapshot);
5266 let end = range
5267 .end
5268 .to_point(buffer)
5269 .to_display_point(display_snapshot);
5270 results.push((start..end, *color))
5271 }
5272 }
5273 results
5274 }
5275
5276 fn next_blink_epoch(&mut self) -> usize {
5277 self.blink_epoch += 1;
5278 self.blink_epoch
5279 }
5280
5281 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
5282 if !self.focused {
5283 return;
5284 }
5285
5286 self.show_local_cursors = true;
5287 cx.notify();
5288
5289 let epoch = self.next_blink_epoch();
5290 cx.spawn(|this, mut cx| {
5291 let this = this.downgrade();
5292 async move {
5293 Timer::after(CURSOR_BLINK_INTERVAL).await;
5294 if let Some(this) = this.upgrade(&cx) {
5295 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
5296 }
5297 }
5298 })
5299 .detach();
5300 }
5301
5302 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
5303 if epoch == self.blink_epoch {
5304 self.blinking_paused = false;
5305 self.blink_cursors(epoch, cx);
5306 }
5307 }
5308
5309 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
5310 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
5311 self.show_local_cursors = !self.show_local_cursors;
5312 cx.notify();
5313
5314 let epoch = self.next_blink_epoch();
5315 cx.spawn(|this, mut cx| {
5316 let this = this.downgrade();
5317 async move {
5318 Timer::after(CURSOR_BLINK_INTERVAL).await;
5319 if let Some(this) = this.upgrade(&cx) {
5320 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
5321 }
5322 }
5323 })
5324 .detach();
5325 }
5326 }
5327
5328 pub fn show_local_cursors(&self) -> bool {
5329 self.show_local_cursors
5330 }
5331
5332 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
5333 cx.notify();
5334 }
5335
5336 fn on_buffer_event(
5337 &mut self,
5338 _: ModelHandle<MultiBuffer>,
5339 event: &language::Event,
5340 cx: &mut ViewContext<Self>,
5341 ) {
5342 match event {
5343 language::Event::Edited => {
5344 self.refresh_active_diagnostics(cx);
5345 self.refresh_code_actions(cx);
5346 cx.emit(Event::Edited);
5347 }
5348 language::Event::Dirtied => cx.emit(Event::Dirtied),
5349 language::Event::Saved => cx.emit(Event::Saved),
5350 language::Event::FileHandleChanged => cx.emit(Event::TitleChanged),
5351 language::Event::Reloaded => cx.emit(Event::TitleChanged),
5352 language::Event::Closed => cx.emit(Event::Closed),
5353 language::Event::DiagnosticsUpdated => {
5354 self.refresh_active_diagnostics(cx);
5355 }
5356 _ => {}
5357 }
5358 }
5359
5360 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
5361 cx.notify();
5362 }
5363
5364 pub fn set_searchable(&mut self, searchable: bool) {
5365 self.searchable = searchable;
5366 }
5367
5368 pub fn searchable(&self) -> bool {
5369 self.searchable
5370 }
5371
5372 fn open_excerpts(workspace: &mut Workspace, _: &OpenExcerpts, cx: &mut ViewContext<Workspace>) {
5373 let active_item = workspace.active_item(cx);
5374 let editor_handle = if let Some(editor) = active_item
5375 .as_ref()
5376 .and_then(|item| item.act_as::<Self>(cx))
5377 {
5378 editor
5379 } else {
5380 cx.propagate_action();
5381 return;
5382 };
5383
5384 let editor = editor_handle.read(cx);
5385 let buffer = editor.buffer.read(cx);
5386 if buffer.is_singleton() {
5387 cx.propagate_action();
5388 return;
5389 }
5390
5391 let mut new_selections_by_buffer = HashMap::default();
5392 for selection in editor.local_selections::<usize>(cx) {
5393 for (buffer, mut range) in
5394 buffer.range_to_buffer_ranges(selection.start..selection.end, cx)
5395 {
5396 if selection.reversed {
5397 mem::swap(&mut range.start, &mut range.end);
5398 }
5399 new_selections_by_buffer
5400 .entry(buffer)
5401 .or_insert(Vec::new())
5402 .push(range)
5403 }
5404 }
5405
5406 editor_handle.update(cx, |editor, cx| {
5407 editor.push_to_nav_history(editor.newest_anchor_selection().head(), None, cx);
5408 });
5409 let nav_history = workspace.active_pane().read(cx).nav_history().clone();
5410 nav_history.borrow_mut().disable();
5411
5412 // We defer the pane interaction because we ourselves are a workspace item
5413 // and activating a new item causes the pane to call a method on us reentrantly,
5414 // which panics if we're on the stack.
5415 cx.defer(move |workspace, cx| {
5416 for (ix, (buffer, ranges)) in new_selections_by_buffer.into_iter().enumerate() {
5417 let buffer = BufferItemHandle(buffer);
5418 if ix == 0 && !workspace.activate_pane_for_item(&buffer, cx) {
5419 workspace.activate_next_pane(cx);
5420 }
5421
5422 let editor = workspace
5423 .open_item(buffer, cx)
5424 .downcast::<Editor>()
5425 .unwrap();
5426
5427 editor.update(cx, |editor, cx| {
5428 editor.select_ranges(ranges, Some(Autoscroll::Newest), cx);
5429 });
5430 }
5431
5432 nav_history.borrow_mut().enable();
5433 });
5434 }
5435}
5436
5437impl EditorSnapshot {
5438 pub fn is_focused(&self) -> bool {
5439 self.is_focused
5440 }
5441
5442 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
5443 self.placeholder_text.as_ref()
5444 }
5445
5446 pub fn scroll_position(&self) -> Vector2F {
5447 compute_scroll_position(
5448 &self.display_snapshot,
5449 self.scroll_position,
5450 &self.scroll_top_anchor,
5451 )
5452 }
5453}
5454
5455impl Deref for EditorSnapshot {
5456 type Target = DisplaySnapshot;
5457
5458 fn deref(&self) -> &Self::Target {
5459 &self.display_snapshot
5460 }
5461}
5462
5463fn compute_scroll_position(
5464 snapshot: &DisplaySnapshot,
5465 mut scroll_position: Vector2F,
5466 scroll_top_anchor: &Option<Anchor>,
5467) -> Vector2F {
5468 if let Some(anchor) = scroll_top_anchor {
5469 let scroll_top = anchor.to_display_point(snapshot).row() as f32;
5470 scroll_position.set_y(scroll_top + scroll_position.y());
5471 } else {
5472 scroll_position.set_y(0.);
5473 }
5474 scroll_position
5475}
5476
5477#[derive(Copy, Clone)]
5478pub enum Event {
5479 Activate,
5480 Edited,
5481 Blurred,
5482 Dirtied,
5483 Saved,
5484 TitleChanged,
5485 SelectionsChanged,
5486 Closed,
5487}
5488
5489impl Entity for Editor {
5490 type Event = Event;
5491}
5492
5493impl View for Editor {
5494 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
5495 let style = self.style(cx);
5496 self.display_map.update(cx, |map, cx| {
5497 map.set_font(style.text.font_id, style.text.font_size, cx)
5498 });
5499 EditorElement::new(self.handle.clone(), style.clone()).boxed()
5500 }
5501
5502 fn ui_name() -> &'static str {
5503 "Editor"
5504 }
5505
5506 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
5507 self.focused = true;
5508 self.blink_cursors(self.blink_epoch, cx);
5509 self.buffer.update(cx, |buffer, cx| {
5510 buffer.finalize_last_transaction(cx);
5511 buffer.set_active_selections(&self.selections, cx)
5512 });
5513 }
5514
5515 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
5516 self.focused = false;
5517 self.show_local_cursors = false;
5518 self.buffer
5519 .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
5520 self.hide_context_menu(cx);
5521 cx.emit(Event::Blurred);
5522 cx.notify();
5523 }
5524
5525 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
5526 let mut cx = Self::default_keymap_context();
5527 let mode = match self.mode {
5528 EditorMode::SingleLine => "single_line",
5529 EditorMode::AutoHeight { .. } => "auto_height",
5530 EditorMode::Full => "full",
5531 };
5532 cx.map.insert("mode".into(), mode.into());
5533 if self.pending_rename.is_some() {
5534 cx.set.insert("renaming".into());
5535 }
5536 match self.context_menu.as_ref() {
5537 Some(ContextMenu::Completions(_)) => {
5538 cx.set.insert("showing_completions".into());
5539 }
5540 Some(ContextMenu::CodeActions(_)) => {
5541 cx.set.insert("showing_code_actions".into());
5542 }
5543 None => {}
5544 }
5545 cx
5546 }
5547}
5548
5549fn build_style(
5550 settings: &Settings,
5551 get_field_editor_theme: Option<GetFieldEditorTheme>,
5552 cx: &AppContext,
5553) -> EditorStyle {
5554 let mut theme = settings.theme.editor.clone();
5555 if let Some(get_field_editor_theme) = get_field_editor_theme {
5556 let field_editor_theme = get_field_editor_theme(&settings.theme);
5557 if let Some(background) = field_editor_theme.container.background_color {
5558 theme.background = background;
5559 }
5560 theme.text_color = field_editor_theme.text.color;
5561 theme.selection = field_editor_theme.selection;
5562 EditorStyle {
5563 text: field_editor_theme.text,
5564 placeholder_text: field_editor_theme.placeholder_text,
5565 theme,
5566 }
5567 } else {
5568 let font_cache = cx.font_cache();
5569 let font_family_id = settings.buffer_font_family;
5570 let font_family_name = cx.font_cache().family_name(font_family_id).unwrap();
5571 let font_properties = Default::default();
5572 let font_id = font_cache
5573 .select_font(font_family_id, &font_properties)
5574 .unwrap();
5575 let font_size = settings.buffer_font_size;
5576 EditorStyle {
5577 text: TextStyle {
5578 color: settings.theme.editor.text_color,
5579 font_family_name,
5580 font_family_id,
5581 font_id,
5582 font_size,
5583 font_properties,
5584 underline: None,
5585 },
5586 placeholder_text: None,
5587 theme,
5588 }
5589 }
5590}
5591
5592impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
5593 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
5594 let start = self.start.to_point(buffer);
5595 let end = self.end.to_point(buffer);
5596 if self.reversed {
5597 end..start
5598 } else {
5599 start..end
5600 }
5601 }
5602
5603 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
5604 let start = self.start.to_offset(buffer);
5605 let end = self.end.to_offset(buffer);
5606 if self.reversed {
5607 end..start
5608 } else {
5609 start..end
5610 }
5611 }
5612
5613 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
5614 let start = self
5615 .start
5616 .to_point(&map.buffer_snapshot)
5617 .to_display_point(map);
5618 let end = self
5619 .end
5620 .to_point(&map.buffer_snapshot)
5621 .to_display_point(map);
5622 if self.reversed {
5623 end..start
5624 } else {
5625 start..end
5626 }
5627 }
5628
5629 fn spanned_rows(
5630 &self,
5631 include_end_if_at_line_start: bool,
5632 map: &DisplaySnapshot,
5633 ) -> Range<u32> {
5634 let start = self.start.to_point(&map.buffer_snapshot);
5635 let mut end = self.end.to_point(&map.buffer_snapshot);
5636 if !include_end_if_at_line_start && start.row != end.row && end.column == 0 {
5637 end.row -= 1;
5638 }
5639
5640 let buffer_start = map.prev_line_boundary(start).0;
5641 let buffer_end = map.next_line_boundary(end).0;
5642 buffer_start.row..buffer_end.row + 1
5643 }
5644}
5645
5646impl<T: InvalidationRegion> InvalidationStack<T> {
5647 fn invalidate<S>(&mut self, selections: &[Selection<S>], buffer: &MultiBufferSnapshot)
5648 where
5649 S: Clone + ToOffset,
5650 {
5651 while let Some(region) = self.last() {
5652 let all_selections_inside_invalidation_ranges =
5653 if selections.len() == region.ranges().len() {
5654 selections
5655 .iter()
5656 .zip(region.ranges().iter().map(|r| r.to_offset(&buffer)))
5657 .all(|(selection, invalidation_range)| {
5658 let head = selection.head().to_offset(&buffer);
5659 invalidation_range.start <= head && invalidation_range.end >= head
5660 })
5661 } else {
5662 false
5663 };
5664
5665 if all_selections_inside_invalidation_ranges {
5666 break;
5667 } else {
5668 self.pop();
5669 }
5670 }
5671 }
5672}
5673
5674impl<T> Default for InvalidationStack<T> {
5675 fn default() -> Self {
5676 Self(Default::default())
5677 }
5678}
5679
5680impl<T> Deref for InvalidationStack<T> {
5681 type Target = Vec<T>;
5682
5683 fn deref(&self) -> &Self::Target {
5684 &self.0
5685 }
5686}
5687
5688impl<T> DerefMut for InvalidationStack<T> {
5689 fn deref_mut(&mut self) -> &mut Self::Target {
5690 &mut self.0
5691 }
5692}
5693
5694impl InvalidationRegion for BracketPairState {
5695 fn ranges(&self) -> &[Range<Anchor>] {
5696 &self.ranges
5697 }
5698}
5699
5700impl InvalidationRegion for SnippetState {
5701 fn ranges(&self) -> &[Range<Anchor>] {
5702 &self.ranges[self.active_index]
5703 }
5704}
5705
5706impl Deref for EditorStyle {
5707 type Target = theme::Editor;
5708
5709 fn deref(&self) -> &Self::Target {
5710 &self.theme
5711 }
5712}
5713
5714pub fn diagnostic_block_renderer(
5715 diagnostic: Diagnostic,
5716 is_valid: bool,
5717 settings: watch::Receiver<Settings>,
5718) -> RenderBlock {
5719 let mut highlighted_lines = Vec::new();
5720 for line in diagnostic.message.lines() {
5721 highlighted_lines.push(highlight_diagnostic_message(line));
5722 }
5723
5724 Arc::new(move |cx: &BlockContext| {
5725 let settings = settings.borrow();
5726 let theme = &settings.theme.editor;
5727 let style = diagnostic_style(diagnostic.severity, is_valid, theme);
5728 let font_size = (style.text_scale_factor * settings.buffer_font_size).round();
5729 Flex::column()
5730 .with_children(highlighted_lines.iter().map(|(line, highlights)| {
5731 Label::new(
5732 line.clone(),
5733 style.message.clone().with_font_size(font_size),
5734 )
5735 .with_highlights(highlights.clone())
5736 .contained()
5737 .with_margin_left(cx.anchor_x)
5738 .boxed()
5739 }))
5740 .aligned()
5741 .left()
5742 .boxed()
5743 })
5744}
5745
5746pub fn highlight_diagnostic_message(message: &str) -> (String, Vec<usize>) {
5747 let mut message_without_backticks = String::new();
5748 let mut prev_offset = 0;
5749 let mut inside_block = false;
5750 let mut highlights = Vec::new();
5751 for (match_ix, (offset, _)) in message
5752 .match_indices('`')
5753 .chain([(message.len(), "")])
5754 .enumerate()
5755 {
5756 message_without_backticks.push_str(&message[prev_offset..offset]);
5757 if inside_block {
5758 highlights.extend(prev_offset - match_ix..offset - match_ix);
5759 }
5760
5761 inside_block = !inside_block;
5762 prev_offset = offset + 1;
5763 }
5764
5765 (message_without_backticks, highlights)
5766}
5767
5768pub fn diagnostic_style(
5769 severity: DiagnosticSeverity,
5770 valid: bool,
5771 theme: &theme::Editor,
5772) -> DiagnosticStyle {
5773 match (severity, valid) {
5774 (DiagnosticSeverity::ERROR, true) => theme.error_diagnostic.clone(),
5775 (DiagnosticSeverity::ERROR, false) => theme.invalid_error_diagnostic.clone(),
5776 (DiagnosticSeverity::WARNING, true) => theme.warning_diagnostic.clone(),
5777 (DiagnosticSeverity::WARNING, false) => theme.invalid_warning_diagnostic.clone(),
5778 (DiagnosticSeverity::INFORMATION, true) => theme.information_diagnostic.clone(),
5779 (DiagnosticSeverity::INFORMATION, false) => theme.invalid_information_diagnostic.clone(),
5780 (DiagnosticSeverity::HINT, true) => theme.hint_diagnostic.clone(),
5781 (DiagnosticSeverity::HINT, false) => theme.invalid_hint_diagnostic.clone(),
5782 _ => theme.invalid_hint_diagnostic.clone(),
5783 }
5784}
5785
5786pub fn combine_syntax_and_fuzzy_match_highlights(
5787 text: &str,
5788 default_style: HighlightStyle,
5789 syntax_ranges: impl Iterator<Item = (Range<usize>, HighlightStyle)>,
5790 match_indices: &[usize],
5791) -> Vec<(Range<usize>, HighlightStyle)> {
5792 let mut result = Vec::new();
5793 let mut match_indices = match_indices.iter().copied().peekable();
5794
5795 for (range, mut syntax_highlight) in syntax_ranges.chain([(usize::MAX..0, Default::default())])
5796 {
5797 syntax_highlight.font_properties.weight(Default::default());
5798
5799 // Add highlights for any fuzzy match characters before the next
5800 // syntax highlight range.
5801 while let Some(&match_index) = match_indices.peek() {
5802 if match_index >= range.start {
5803 break;
5804 }
5805 match_indices.next();
5806 let end_index = char_ix_after(match_index, text);
5807 let mut match_style = default_style;
5808 match_style.font_properties.weight(fonts::Weight::BOLD);
5809 result.push((match_index..end_index, match_style));
5810 }
5811
5812 if range.start == usize::MAX {
5813 break;
5814 }
5815
5816 // Add highlights for any fuzzy match characters within the
5817 // syntax highlight range.
5818 let mut offset = range.start;
5819 while let Some(&match_index) = match_indices.peek() {
5820 if match_index >= range.end {
5821 break;
5822 }
5823
5824 match_indices.next();
5825 if match_index > offset {
5826 result.push((offset..match_index, syntax_highlight));
5827 }
5828
5829 let mut end_index = char_ix_after(match_index, text);
5830 while let Some(&next_match_index) = match_indices.peek() {
5831 if next_match_index == end_index && next_match_index < range.end {
5832 end_index = char_ix_after(next_match_index, text);
5833 match_indices.next();
5834 } else {
5835 break;
5836 }
5837 }
5838
5839 let mut match_style = syntax_highlight;
5840 match_style.font_properties.weight(fonts::Weight::BOLD);
5841 result.push((match_index..end_index, match_style));
5842 offset = end_index;
5843 }
5844
5845 if offset < range.end {
5846 result.push((offset..range.end, syntax_highlight));
5847 }
5848 }
5849
5850 fn char_ix_after(ix: usize, text: &str) -> usize {
5851 ix + text[ix..].chars().next().unwrap().len_utf8()
5852 }
5853
5854 result
5855}
5856
5857pub fn styled_runs_for_code_label<'a>(
5858 label: &'a CodeLabel,
5859 default_color: Color,
5860 syntax_theme: &'a theme::SyntaxTheme,
5861) -> impl 'a + Iterator<Item = (Range<usize>, HighlightStyle)> {
5862 const MUTED_OPACITY: usize = 165;
5863
5864 let mut muted_default_style = HighlightStyle {
5865 color: default_color,
5866 ..Default::default()
5867 };
5868 muted_default_style.color.a = ((default_color.a as usize * MUTED_OPACITY) / 255) as u8;
5869
5870 let mut prev_end = label.filter_range.end;
5871 label
5872 .runs
5873 .iter()
5874 .enumerate()
5875 .flat_map(move |(ix, (range, highlight_id))| {
5876 let style = if let Some(style) = highlight_id.style(syntax_theme) {
5877 style
5878 } else {
5879 return Default::default();
5880 };
5881 let mut muted_style = style.clone();
5882 muted_style.color.a = ((style.color.a as usize * MUTED_OPACITY) / 255) as u8;
5883
5884 let mut runs = SmallVec::<[(Range<usize>, HighlightStyle); 3]>::new();
5885 if range.start >= label.filter_range.end {
5886 if range.start > prev_end {
5887 runs.push((prev_end..range.start, muted_default_style));
5888 }
5889 runs.push((range.clone(), muted_style));
5890 } else if range.end <= label.filter_range.end {
5891 runs.push((range.clone(), style));
5892 } else {
5893 runs.push((range.start..label.filter_range.end, style));
5894 runs.push((label.filter_range.end..range.end, muted_style));
5895 }
5896 prev_end = cmp::max(prev_end, range.end);
5897
5898 if ix + 1 == label.runs.len() && label.text.len() > prev_end {
5899 runs.push((prev_end..label.text.len(), muted_default_style));
5900 }
5901
5902 runs
5903 })
5904}
5905
5906#[cfg(test)]
5907mod tests {
5908 use super::*;
5909 use language::LanguageConfig;
5910 use lsp::FakeLanguageServer;
5911 use project::{FakeFs, ProjectPath};
5912 use smol::stream::StreamExt;
5913 use std::{cell::RefCell, rc::Rc, time::Instant};
5914 use text::Point;
5915 use unindent::Unindent;
5916 use util::test::sample_text;
5917
5918 #[gpui::test]
5919 fn test_undo_redo_with_selection_restoration(cx: &mut MutableAppContext) {
5920 let mut now = Instant::now();
5921 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
5922 let group_interval = buffer.read(cx).transaction_group_interval();
5923 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5924 let settings = Settings::test(cx);
5925 let (_, editor) = cx.add_window(Default::default(), |cx| {
5926 build_editor(buffer.clone(), settings, cx)
5927 });
5928
5929 editor.update(cx, |editor, cx| {
5930 editor.start_transaction_at(now, cx);
5931 editor.select_ranges([2..4], None, cx);
5932 editor.insert("cd", cx);
5933 editor.end_transaction_at(now, cx);
5934 assert_eq!(editor.text(cx), "12cd56");
5935 assert_eq!(editor.selected_ranges(cx), vec![4..4]);
5936
5937 editor.start_transaction_at(now, cx);
5938 editor.select_ranges([4..5], None, cx);
5939 editor.insert("e", cx);
5940 editor.end_transaction_at(now, cx);
5941 assert_eq!(editor.text(cx), "12cde6");
5942 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
5943
5944 now += group_interval + Duration::from_millis(1);
5945 editor.select_ranges([2..2], None, cx);
5946
5947 // Simulate an edit in another editor
5948 buffer.update(cx, |buffer, cx| {
5949 buffer.start_transaction_at(now, cx);
5950 buffer.edit([0..1], "a", cx);
5951 buffer.edit([1..1], "b", cx);
5952 buffer.end_transaction_at(now, cx);
5953 });
5954
5955 assert_eq!(editor.text(cx), "ab2cde6");
5956 assert_eq!(editor.selected_ranges(cx), vec![3..3]);
5957
5958 // Last transaction happened past the group interval in a different editor.
5959 // Undo it individually and don't restore selections.
5960 editor.undo(&Undo, cx);
5961 assert_eq!(editor.text(cx), "12cde6");
5962 assert_eq!(editor.selected_ranges(cx), vec![2..2]);
5963
5964 // First two transactions happened within the group interval in this editor.
5965 // Undo them together and restore selections.
5966 editor.undo(&Undo, cx);
5967 editor.undo(&Undo, cx); // Undo stack is empty here, so this is a no-op.
5968 assert_eq!(editor.text(cx), "123456");
5969 assert_eq!(editor.selected_ranges(cx), vec![0..0]);
5970
5971 // Redo the first two transactions together.
5972 editor.redo(&Redo, cx);
5973 assert_eq!(editor.text(cx), "12cde6");
5974 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
5975
5976 // Redo the last transaction on its own.
5977 editor.redo(&Redo, cx);
5978 assert_eq!(editor.text(cx), "ab2cde6");
5979 assert_eq!(editor.selected_ranges(cx), vec![6..6]);
5980
5981 // Test empty transactions.
5982 editor.start_transaction_at(now, cx);
5983 editor.end_transaction_at(now, cx);
5984 editor.undo(&Undo, cx);
5985 assert_eq!(editor.text(cx), "12cde6");
5986 });
5987 }
5988
5989 #[gpui::test]
5990 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
5991 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
5992 let settings = Settings::test(cx);
5993 let (_, editor) =
5994 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5995
5996 editor.update(cx, |view, cx| {
5997 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
5998 });
5999
6000 assert_eq!(
6001 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6002 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
6003 );
6004
6005 editor.update(cx, |view, cx| {
6006 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6007 });
6008
6009 assert_eq!(
6010 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6011 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6012 );
6013
6014 editor.update(cx, |view, cx| {
6015 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6016 });
6017
6018 assert_eq!(
6019 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6020 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
6021 );
6022
6023 editor.update(cx, |view, cx| {
6024 view.end_selection(cx);
6025 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6026 });
6027
6028 assert_eq!(
6029 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6030 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
6031 );
6032
6033 editor.update(cx, |view, cx| {
6034 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
6035 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
6036 });
6037
6038 assert_eq!(
6039 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6040 [
6041 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
6042 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
6043 ]
6044 );
6045
6046 editor.update(cx, |view, cx| {
6047 view.end_selection(cx);
6048 });
6049
6050 assert_eq!(
6051 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6052 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
6053 );
6054 }
6055
6056 #[gpui::test]
6057 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
6058 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6059 let settings = Settings::test(cx);
6060 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6061
6062 view.update(cx, |view, cx| {
6063 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
6064 assert_eq!(
6065 view.selected_display_ranges(cx),
6066 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
6067 );
6068 });
6069
6070 view.update(cx, |view, cx| {
6071 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6072 assert_eq!(
6073 view.selected_display_ranges(cx),
6074 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6075 );
6076 });
6077
6078 view.update(cx, |view, cx| {
6079 view.cancel(&Cancel, cx);
6080 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6081 assert_eq!(
6082 view.selected_display_ranges(cx),
6083 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6084 );
6085 });
6086 }
6087
6088 #[gpui::test]
6089 fn test_navigation_history(cx: &mut gpui::MutableAppContext) {
6090 cx.add_window(Default::default(), |cx| {
6091 use workspace::ItemView;
6092 let nav_history = Rc::new(RefCell::new(workspace::NavHistory::default()));
6093 let settings = Settings::test(&cx);
6094 let buffer = MultiBuffer::build_simple(&sample_text(30, 5, 'a'), cx);
6095 let mut editor = build_editor(buffer.clone(), settings, cx);
6096 editor.nav_history = Some(ItemNavHistory::new(nav_history.clone(), &cx.handle()));
6097
6098 // Move the cursor a small distance.
6099 // Nothing is added to the navigation history.
6100 editor.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
6101 editor.select_display_ranges(&[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)], cx);
6102 assert!(nav_history.borrow_mut().pop_backward().is_none());
6103
6104 // Move the cursor a large distance.
6105 // The history can jump back to the previous position.
6106 editor.select_display_ranges(&[DisplayPoint::new(13, 0)..DisplayPoint::new(13, 3)], cx);
6107 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
6108 editor.navigate(nav_entry.data.unwrap(), cx);
6109 assert_eq!(nav_entry.item_view.id(), cx.view_id());
6110 assert_eq!(
6111 editor.selected_display_ranges(cx),
6112 &[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)]
6113 );
6114
6115 // Move the cursor a small distance via the mouse.
6116 // Nothing is added to the navigation history.
6117 editor.begin_selection(DisplayPoint::new(5, 0), false, 1, cx);
6118 editor.end_selection(cx);
6119 assert_eq!(
6120 editor.selected_display_ranges(cx),
6121 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
6122 );
6123 assert!(nav_history.borrow_mut().pop_backward().is_none());
6124
6125 // Move the cursor a large distance via the mouse.
6126 // The history can jump back to the previous position.
6127 editor.begin_selection(DisplayPoint::new(15, 0), false, 1, cx);
6128 editor.end_selection(cx);
6129 assert_eq!(
6130 editor.selected_display_ranges(cx),
6131 &[DisplayPoint::new(15, 0)..DisplayPoint::new(15, 0)]
6132 );
6133 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
6134 editor.navigate(nav_entry.data.unwrap(), cx);
6135 assert_eq!(nav_entry.item_view.id(), cx.view_id());
6136 assert_eq!(
6137 editor.selected_display_ranges(cx),
6138 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
6139 );
6140
6141 editor
6142 });
6143 }
6144
6145 #[gpui::test]
6146 fn test_cancel(cx: &mut gpui::MutableAppContext) {
6147 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6148 let settings = Settings::test(cx);
6149 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6150
6151 view.update(cx, |view, cx| {
6152 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
6153 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6154 view.end_selection(cx);
6155
6156 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
6157 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
6158 view.end_selection(cx);
6159 assert_eq!(
6160 view.selected_display_ranges(cx),
6161 [
6162 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
6163 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
6164 ]
6165 );
6166 });
6167
6168 view.update(cx, |view, cx| {
6169 view.cancel(&Cancel, cx);
6170 assert_eq!(
6171 view.selected_display_ranges(cx),
6172 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
6173 );
6174 });
6175
6176 view.update(cx, |view, cx| {
6177 view.cancel(&Cancel, cx);
6178 assert_eq!(
6179 view.selected_display_ranges(cx),
6180 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
6181 );
6182 });
6183 }
6184
6185 #[gpui::test]
6186 fn test_fold(cx: &mut gpui::MutableAppContext) {
6187 let buffer = MultiBuffer::build_simple(
6188 &"
6189 impl Foo {
6190 // Hello!
6191
6192 fn a() {
6193 1
6194 }
6195
6196 fn b() {
6197 2
6198 }
6199
6200 fn c() {
6201 3
6202 }
6203 }
6204 "
6205 .unindent(),
6206 cx,
6207 );
6208 let settings = Settings::test(&cx);
6209 let (_, view) = cx.add_window(Default::default(), |cx| {
6210 build_editor(buffer.clone(), settings, cx)
6211 });
6212
6213 view.update(cx, |view, cx| {
6214 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx);
6215 view.fold(&Fold, cx);
6216 assert_eq!(
6217 view.display_text(cx),
6218 "
6219 impl Foo {
6220 // Hello!
6221
6222 fn a() {
6223 1
6224 }
6225
6226 fn b() {…
6227 }
6228
6229 fn c() {…
6230 }
6231 }
6232 "
6233 .unindent(),
6234 );
6235
6236 view.fold(&Fold, cx);
6237 assert_eq!(
6238 view.display_text(cx),
6239 "
6240 impl Foo {…
6241 }
6242 "
6243 .unindent(),
6244 );
6245
6246 view.unfold(&Unfold, cx);
6247 assert_eq!(
6248 view.display_text(cx),
6249 "
6250 impl Foo {
6251 // Hello!
6252
6253 fn a() {
6254 1
6255 }
6256
6257 fn b() {…
6258 }
6259
6260 fn c() {…
6261 }
6262 }
6263 "
6264 .unindent(),
6265 );
6266
6267 view.unfold(&Unfold, cx);
6268 assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text());
6269 });
6270 }
6271
6272 #[gpui::test]
6273 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
6274 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
6275 let settings = Settings::test(&cx);
6276 let (_, view) = cx.add_window(Default::default(), |cx| {
6277 build_editor(buffer.clone(), settings, cx)
6278 });
6279
6280 buffer.update(cx, |buffer, cx| {
6281 buffer.edit(
6282 vec![
6283 Point::new(1, 0)..Point::new(1, 0),
6284 Point::new(1, 1)..Point::new(1, 1),
6285 ],
6286 "\t",
6287 cx,
6288 );
6289 });
6290
6291 view.update(cx, |view, cx| {
6292 assert_eq!(
6293 view.selected_display_ranges(cx),
6294 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6295 );
6296
6297 view.move_down(&MoveDown, cx);
6298 assert_eq!(
6299 view.selected_display_ranges(cx),
6300 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6301 );
6302
6303 view.move_right(&MoveRight, cx);
6304 assert_eq!(
6305 view.selected_display_ranges(cx),
6306 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
6307 );
6308
6309 view.move_left(&MoveLeft, cx);
6310 assert_eq!(
6311 view.selected_display_ranges(cx),
6312 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6313 );
6314
6315 view.move_up(&MoveUp, cx);
6316 assert_eq!(
6317 view.selected_display_ranges(cx),
6318 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6319 );
6320
6321 view.move_to_end(&MoveToEnd, cx);
6322 assert_eq!(
6323 view.selected_display_ranges(cx),
6324 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
6325 );
6326
6327 view.move_to_beginning(&MoveToBeginning, cx);
6328 assert_eq!(
6329 view.selected_display_ranges(cx),
6330 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6331 );
6332
6333 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx);
6334 view.select_to_beginning(&SelectToBeginning, cx);
6335 assert_eq!(
6336 view.selected_display_ranges(cx),
6337 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
6338 );
6339
6340 view.select_to_end(&SelectToEnd, cx);
6341 assert_eq!(
6342 view.selected_display_ranges(cx),
6343 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
6344 );
6345 });
6346 }
6347
6348 #[gpui::test]
6349 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
6350 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
6351 let settings = Settings::test(&cx);
6352 let (_, view) = cx.add_window(Default::default(), |cx| {
6353 build_editor(buffer.clone(), settings, cx)
6354 });
6355
6356 assert_eq!('ⓐ'.len_utf8(), 3);
6357 assert_eq!('α'.len_utf8(), 2);
6358
6359 view.update(cx, |view, cx| {
6360 view.fold_ranges(
6361 vec![
6362 Point::new(0, 6)..Point::new(0, 12),
6363 Point::new(1, 2)..Point::new(1, 4),
6364 Point::new(2, 4)..Point::new(2, 8),
6365 ],
6366 cx,
6367 );
6368 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
6369
6370 view.move_right(&MoveRight, cx);
6371 assert_eq!(
6372 view.selected_display_ranges(cx),
6373 &[empty_range(0, "ⓐ".len())]
6374 );
6375 view.move_right(&MoveRight, cx);
6376 assert_eq!(
6377 view.selected_display_ranges(cx),
6378 &[empty_range(0, "ⓐⓑ".len())]
6379 );
6380 view.move_right(&MoveRight, cx);
6381 assert_eq!(
6382 view.selected_display_ranges(cx),
6383 &[empty_range(0, "ⓐⓑ…".len())]
6384 );
6385
6386 view.move_down(&MoveDown, cx);
6387 assert_eq!(
6388 view.selected_display_ranges(cx),
6389 &[empty_range(1, "ab…".len())]
6390 );
6391 view.move_left(&MoveLeft, cx);
6392 assert_eq!(
6393 view.selected_display_ranges(cx),
6394 &[empty_range(1, "ab".len())]
6395 );
6396 view.move_left(&MoveLeft, cx);
6397 assert_eq!(
6398 view.selected_display_ranges(cx),
6399 &[empty_range(1, "a".len())]
6400 );
6401
6402 view.move_down(&MoveDown, cx);
6403 assert_eq!(
6404 view.selected_display_ranges(cx),
6405 &[empty_range(2, "α".len())]
6406 );
6407 view.move_right(&MoveRight, cx);
6408 assert_eq!(
6409 view.selected_display_ranges(cx),
6410 &[empty_range(2, "αβ".len())]
6411 );
6412 view.move_right(&MoveRight, cx);
6413 assert_eq!(
6414 view.selected_display_ranges(cx),
6415 &[empty_range(2, "αβ…".len())]
6416 );
6417 view.move_right(&MoveRight, cx);
6418 assert_eq!(
6419 view.selected_display_ranges(cx),
6420 &[empty_range(2, "αβ…ε".len())]
6421 );
6422
6423 view.move_up(&MoveUp, cx);
6424 assert_eq!(
6425 view.selected_display_ranges(cx),
6426 &[empty_range(1, "ab…e".len())]
6427 );
6428 view.move_up(&MoveUp, cx);
6429 assert_eq!(
6430 view.selected_display_ranges(cx),
6431 &[empty_range(0, "ⓐⓑ…ⓔ".len())]
6432 );
6433 view.move_left(&MoveLeft, cx);
6434 assert_eq!(
6435 view.selected_display_ranges(cx),
6436 &[empty_range(0, "ⓐⓑ…".len())]
6437 );
6438 view.move_left(&MoveLeft, cx);
6439 assert_eq!(
6440 view.selected_display_ranges(cx),
6441 &[empty_range(0, "ⓐⓑ".len())]
6442 );
6443 view.move_left(&MoveLeft, cx);
6444 assert_eq!(
6445 view.selected_display_ranges(cx),
6446 &[empty_range(0, "ⓐ".len())]
6447 );
6448 });
6449 }
6450
6451 #[gpui::test]
6452 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
6453 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
6454 let settings = Settings::test(&cx);
6455 let (_, view) = cx.add_window(Default::default(), |cx| {
6456 build_editor(buffer.clone(), settings, cx)
6457 });
6458 view.update(cx, |view, cx| {
6459 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx);
6460 view.move_down(&MoveDown, cx);
6461 assert_eq!(
6462 view.selected_display_ranges(cx),
6463 &[empty_range(1, "abcd".len())]
6464 );
6465
6466 view.move_down(&MoveDown, cx);
6467 assert_eq!(
6468 view.selected_display_ranges(cx),
6469 &[empty_range(2, "αβγ".len())]
6470 );
6471
6472 view.move_down(&MoveDown, cx);
6473 assert_eq!(
6474 view.selected_display_ranges(cx),
6475 &[empty_range(3, "abcd".len())]
6476 );
6477
6478 view.move_down(&MoveDown, cx);
6479 assert_eq!(
6480 view.selected_display_ranges(cx),
6481 &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
6482 );
6483
6484 view.move_up(&MoveUp, cx);
6485 assert_eq!(
6486 view.selected_display_ranges(cx),
6487 &[empty_range(3, "abcd".len())]
6488 );
6489
6490 view.move_up(&MoveUp, cx);
6491 assert_eq!(
6492 view.selected_display_ranges(cx),
6493 &[empty_range(2, "αβγ".len())]
6494 );
6495 });
6496 }
6497
6498 #[gpui::test]
6499 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
6500 let buffer = MultiBuffer::build_simple("abc\n def", cx);
6501 let settings = Settings::test(&cx);
6502 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6503 view.update(cx, |view, cx| {
6504 view.select_display_ranges(
6505 &[
6506 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6507 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
6508 ],
6509 cx,
6510 );
6511 });
6512
6513 view.update(cx, |view, cx| {
6514 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6515 assert_eq!(
6516 view.selected_display_ranges(cx),
6517 &[
6518 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6519 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6520 ]
6521 );
6522 });
6523
6524 view.update(cx, |view, cx| {
6525 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6526 assert_eq!(
6527 view.selected_display_ranges(cx),
6528 &[
6529 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6530 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6531 ]
6532 );
6533 });
6534
6535 view.update(cx, |view, cx| {
6536 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6537 assert_eq!(
6538 view.selected_display_ranges(cx),
6539 &[
6540 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6541 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6542 ]
6543 );
6544 });
6545
6546 view.update(cx, |view, cx| {
6547 view.move_to_end_of_line(&MoveToEndOfLine, cx);
6548 assert_eq!(
6549 view.selected_display_ranges(cx),
6550 &[
6551 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6552 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6553 ]
6554 );
6555 });
6556
6557 // Moving to the end of line again is a no-op.
6558 view.update(cx, |view, cx| {
6559 view.move_to_end_of_line(&MoveToEndOfLine, cx);
6560 assert_eq!(
6561 view.selected_display_ranges(cx),
6562 &[
6563 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6564 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6565 ]
6566 );
6567 });
6568
6569 view.update(cx, |view, cx| {
6570 view.move_left(&MoveLeft, cx);
6571 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6572 assert_eq!(
6573 view.selected_display_ranges(cx),
6574 &[
6575 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6576 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
6577 ]
6578 );
6579 });
6580
6581 view.update(cx, |view, cx| {
6582 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6583 assert_eq!(
6584 view.selected_display_ranges(cx),
6585 &[
6586 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6587 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
6588 ]
6589 );
6590 });
6591
6592 view.update(cx, |view, cx| {
6593 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6594 assert_eq!(
6595 view.selected_display_ranges(cx),
6596 &[
6597 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6598 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
6599 ]
6600 );
6601 });
6602
6603 view.update(cx, |view, cx| {
6604 view.select_to_end_of_line(&SelectToEndOfLine(true), cx);
6605 assert_eq!(
6606 view.selected_display_ranges(cx),
6607 &[
6608 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
6609 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
6610 ]
6611 );
6612 });
6613
6614 view.update(cx, |view, cx| {
6615 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
6616 assert_eq!(view.display_text(cx), "ab\n de");
6617 assert_eq!(
6618 view.selected_display_ranges(cx),
6619 &[
6620 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6621 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
6622 ]
6623 );
6624 });
6625
6626 view.update(cx, |view, cx| {
6627 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
6628 assert_eq!(view.display_text(cx), "\n");
6629 assert_eq!(
6630 view.selected_display_ranges(cx),
6631 &[
6632 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6633 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6634 ]
6635 );
6636 });
6637 }
6638
6639 #[gpui::test]
6640 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
6641 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
6642 let settings = Settings::test(&cx);
6643 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6644 view.update(cx, |view, cx| {
6645 view.select_display_ranges(
6646 &[
6647 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
6648 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
6649 ],
6650 cx,
6651 );
6652 });
6653
6654 view.update(cx, |view, cx| {
6655 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6656 assert_eq!(
6657 view.selected_display_ranges(cx),
6658 &[
6659 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
6660 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
6661 ]
6662 );
6663 });
6664
6665 view.update(cx, |view, cx| {
6666 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6667 assert_eq!(
6668 view.selected_display_ranges(cx),
6669 &[
6670 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
6671 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2),
6672 ]
6673 );
6674 });
6675
6676 view.update(cx, |view, cx| {
6677 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6678 assert_eq!(
6679 view.selected_display_ranges(cx),
6680 &[
6681 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
6682 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
6683 ]
6684 );
6685 });
6686
6687 view.update(cx, |view, cx| {
6688 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6689 assert_eq!(
6690 view.selected_display_ranges(cx),
6691 &[
6692 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6693 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6694 ]
6695 );
6696 });
6697
6698 view.update(cx, |view, cx| {
6699 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6700 assert_eq!(
6701 view.selected_display_ranges(cx),
6702 &[
6703 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6704 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 23),
6705 ]
6706 );
6707 });
6708
6709 view.update(cx, |view, cx| {
6710 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6711 assert_eq!(
6712 view.selected_display_ranges(cx),
6713 &[
6714 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6715 DisplayPoint::new(0, 24)..DisplayPoint::new(0, 24),
6716 ]
6717 );
6718 });
6719
6720 view.update(cx, |view, cx| {
6721 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6722 assert_eq!(
6723 view.selected_display_ranges(cx),
6724 &[
6725 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
6726 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6727 ]
6728 );
6729 });
6730
6731 view.update(cx, |view, cx| {
6732 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6733 assert_eq!(
6734 view.selected_display_ranges(cx),
6735 &[
6736 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
6737 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
6738 ]
6739 );
6740 });
6741
6742 view.update(cx, |view, cx| {
6743 view.move_right(&MoveRight, cx);
6744 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
6745 assert_eq!(
6746 view.selected_display_ranges(cx),
6747 &[
6748 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
6749 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
6750 ]
6751 );
6752 });
6753
6754 view.update(cx, |view, cx| {
6755 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
6756 assert_eq!(
6757 view.selected_display_ranges(cx),
6758 &[
6759 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 7),
6760 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 2),
6761 ]
6762 );
6763 });
6764
6765 view.update(cx, |view, cx| {
6766 view.select_to_next_word_boundary(&SelectToNextWordBoundary, cx);
6767 assert_eq!(
6768 view.selected_display_ranges(cx),
6769 &[
6770 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
6771 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
6772 ]
6773 );
6774 });
6775 }
6776
6777 #[gpui::test]
6778 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
6779 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
6780 let settings = Settings::test(&cx);
6781 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6782
6783 view.update(cx, |view, cx| {
6784 view.set_wrap_width(Some(140.), cx);
6785 assert_eq!(
6786 view.display_text(cx),
6787 "use one::{\n two::three::\n four::five\n};"
6788 );
6789
6790 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx);
6791
6792 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6793 assert_eq!(
6794 view.selected_display_ranges(cx),
6795 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
6796 );
6797
6798 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6799 assert_eq!(
6800 view.selected_display_ranges(cx),
6801 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
6802 );
6803
6804 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6805 assert_eq!(
6806 view.selected_display_ranges(cx),
6807 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
6808 );
6809
6810 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6811 assert_eq!(
6812 view.selected_display_ranges(cx),
6813 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
6814 );
6815
6816 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6817 assert_eq!(
6818 view.selected_display_ranges(cx),
6819 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
6820 );
6821
6822 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6823 assert_eq!(
6824 view.selected_display_ranges(cx),
6825 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
6826 );
6827 });
6828 }
6829
6830 #[gpui::test]
6831 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
6832 let buffer = MultiBuffer::build_simple("one two three four", cx);
6833 let settings = Settings::test(&cx);
6834 let (_, view) = cx.add_window(Default::default(), |cx| {
6835 build_editor(buffer.clone(), settings, cx)
6836 });
6837
6838 view.update(cx, |view, cx| {
6839 view.select_display_ranges(
6840 &[
6841 // an empty selection - the preceding word fragment is deleted
6842 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6843 // characters selected - they are deleted
6844 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
6845 ],
6846 cx,
6847 );
6848 view.delete_to_previous_word_boundary(&DeleteToPreviousWordBoundary, cx);
6849 });
6850
6851 assert_eq!(buffer.read(cx).read(cx).text(), "e two te four");
6852
6853 view.update(cx, |view, cx| {
6854 view.select_display_ranges(
6855 &[
6856 // an empty selection - the following word fragment is deleted
6857 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6858 // characters selected - they are deleted
6859 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
6860 ],
6861 cx,
6862 );
6863 view.delete_to_next_word_boundary(&DeleteToNextWordBoundary, cx);
6864 });
6865
6866 assert_eq!(buffer.read(cx).read(cx).text(), "e t te our");
6867 }
6868
6869 #[gpui::test]
6870 fn test_newline(cx: &mut gpui::MutableAppContext) {
6871 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
6872 let settings = Settings::test(&cx);
6873 let (_, view) = cx.add_window(Default::default(), |cx| {
6874 build_editor(buffer.clone(), settings, cx)
6875 });
6876
6877 view.update(cx, |view, cx| {
6878 view.select_display_ranges(
6879 &[
6880 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6881 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6882 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
6883 ],
6884 cx,
6885 );
6886
6887 view.newline(&Newline, cx);
6888 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
6889 });
6890 }
6891
6892 #[gpui::test]
6893 fn test_newline_with_old_selections(cx: &mut gpui::MutableAppContext) {
6894 let buffer = MultiBuffer::build_simple(
6895 "
6896 a
6897 b(
6898 X
6899 )
6900 c(
6901 X
6902 )
6903 "
6904 .unindent()
6905 .as_str(),
6906 cx,
6907 );
6908
6909 let settings = Settings::test(&cx);
6910 let (_, editor) = cx.add_window(Default::default(), |cx| {
6911 let mut editor = build_editor(buffer.clone(), settings, cx);
6912 editor.select_ranges(
6913 [
6914 Point::new(2, 4)..Point::new(2, 5),
6915 Point::new(5, 4)..Point::new(5, 5),
6916 ],
6917 None,
6918 cx,
6919 );
6920 editor
6921 });
6922
6923 // Edit the buffer directly, deleting ranges surrounding the editor's selections
6924 buffer.update(cx, |buffer, cx| {
6925 buffer.edit(
6926 [
6927 Point::new(1, 2)..Point::new(3, 0),
6928 Point::new(4, 2)..Point::new(6, 0),
6929 ],
6930 "",
6931 cx,
6932 );
6933 assert_eq!(
6934 buffer.read(cx).text(),
6935 "
6936 a
6937 b()
6938 c()
6939 "
6940 .unindent()
6941 );
6942 });
6943
6944 editor.update(cx, |editor, cx| {
6945 assert_eq!(
6946 editor.selected_ranges(cx),
6947 &[
6948 Point::new(1, 2)..Point::new(1, 2),
6949 Point::new(2, 2)..Point::new(2, 2),
6950 ],
6951 );
6952
6953 editor.newline(&Newline, cx);
6954 assert_eq!(
6955 editor.text(cx),
6956 "
6957 a
6958 b(
6959 )
6960 c(
6961 )
6962 "
6963 .unindent()
6964 );
6965
6966 // The selections are moved after the inserted newlines
6967 assert_eq!(
6968 editor.selected_ranges(cx),
6969 &[
6970 Point::new(2, 0)..Point::new(2, 0),
6971 Point::new(4, 0)..Point::new(4, 0),
6972 ],
6973 );
6974 });
6975 }
6976
6977 #[gpui::test]
6978 fn test_insert_with_old_selections(cx: &mut gpui::MutableAppContext) {
6979 let buffer = MultiBuffer::build_simple("a( X ), b( Y ), c( Z )", cx);
6980
6981 let settings = Settings::test(&cx);
6982 let (_, editor) = cx.add_window(Default::default(), |cx| {
6983 let mut editor = build_editor(buffer.clone(), settings, cx);
6984 editor.select_ranges([3..4, 11..12, 19..20], None, cx);
6985 editor
6986 });
6987
6988 // Edit the buffer directly, deleting ranges surrounding the editor's selections
6989 buffer.update(cx, |buffer, cx| {
6990 buffer.edit([2..5, 10..13, 18..21], "", cx);
6991 assert_eq!(buffer.read(cx).text(), "a(), b(), c()".unindent());
6992 });
6993
6994 editor.update(cx, |editor, cx| {
6995 assert_eq!(editor.selected_ranges(cx), &[2..2, 7..7, 12..12],);
6996
6997 editor.insert("Z", cx);
6998 assert_eq!(editor.text(cx), "a(Z), b(Z), c(Z)");
6999
7000 // The selections are moved after the inserted characters
7001 assert_eq!(editor.selected_ranges(cx), &[3..3, 9..9, 15..15],);
7002 });
7003 }
7004
7005 #[gpui::test]
7006 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
7007 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
7008 let settings = Settings::test(&cx);
7009 let (_, view) = cx.add_window(Default::default(), |cx| {
7010 build_editor(buffer.clone(), settings, cx)
7011 });
7012
7013 view.update(cx, |view, cx| {
7014 // two selections on the same line
7015 view.select_display_ranges(
7016 &[
7017 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
7018 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
7019 ],
7020 cx,
7021 );
7022
7023 // indent from mid-tabstop to full tabstop
7024 view.tab(&Tab, cx);
7025 assert_eq!(view.text(cx), " one two\nthree\n four");
7026 assert_eq!(
7027 view.selected_display_ranges(cx),
7028 &[
7029 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
7030 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
7031 ]
7032 );
7033
7034 // outdent from 1 tabstop to 0 tabstops
7035 view.outdent(&Outdent, cx);
7036 assert_eq!(view.text(cx), "one two\nthree\n four");
7037 assert_eq!(
7038 view.selected_display_ranges(cx),
7039 &[
7040 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
7041 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
7042 ]
7043 );
7044
7045 // select across line ending
7046 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx);
7047
7048 // indent and outdent affect only the preceding line
7049 view.tab(&Tab, cx);
7050 assert_eq!(view.text(cx), "one two\n three\n four");
7051 assert_eq!(
7052 view.selected_display_ranges(cx),
7053 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
7054 );
7055 view.outdent(&Outdent, cx);
7056 assert_eq!(view.text(cx), "one two\nthree\n four");
7057 assert_eq!(
7058 view.selected_display_ranges(cx),
7059 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
7060 );
7061
7062 // Ensure that indenting/outdenting works when the cursor is at column 0.
7063 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
7064 view.tab(&Tab, cx);
7065 assert_eq!(view.text(cx), "one two\n three\n four");
7066 assert_eq!(
7067 view.selected_display_ranges(cx),
7068 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
7069 );
7070
7071 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
7072 view.outdent(&Outdent, cx);
7073 assert_eq!(view.text(cx), "one two\nthree\n four");
7074 assert_eq!(
7075 view.selected_display_ranges(cx),
7076 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
7077 );
7078 });
7079 }
7080
7081 #[gpui::test]
7082 fn test_backspace(cx: &mut gpui::MutableAppContext) {
7083 let buffer =
7084 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
7085 let settings = Settings::test(&cx);
7086 let (_, view) = cx.add_window(Default::default(), |cx| {
7087 build_editor(buffer.clone(), settings, cx)
7088 });
7089
7090 view.update(cx, |view, cx| {
7091 view.select_display_ranges(
7092 &[
7093 // an empty selection - the preceding character is deleted
7094 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7095 // one character selected - it is deleted
7096 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7097 // a line suffix selected - it is deleted
7098 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
7099 ],
7100 cx,
7101 );
7102 view.backspace(&Backspace, cx);
7103 });
7104
7105 assert_eq!(
7106 buffer.read(cx).read(cx).text(),
7107 "oe two three\nfou five six\nseven ten\n"
7108 );
7109 }
7110
7111 #[gpui::test]
7112 fn test_delete(cx: &mut gpui::MutableAppContext) {
7113 let buffer =
7114 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
7115 let settings = Settings::test(&cx);
7116 let (_, view) = cx.add_window(Default::default(), |cx| {
7117 build_editor(buffer.clone(), settings, cx)
7118 });
7119
7120 view.update(cx, |view, cx| {
7121 view.select_display_ranges(
7122 &[
7123 // an empty selection - the following character is deleted
7124 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7125 // one character selected - it is deleted
7126 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7127 // a line suffix selected - it is deleted
7128 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
7129 ],
7130 cx,
7131 );
7132 view.delete(&Delete, cx);
7133 });
7134
7135 assert_eq!(
7136 buffer.read(cx).read(cx).text(),
7137 "on two three\nfou five six\nseven ten\n"
7138 );
7139 }
7140
7141 #[gpui::test]
7142 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
7143 let settings = Settings::test(&cx);
7144 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7145 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7146 view.update(cx, |view, cx| {
7147 view.select_display_ranges(
7148 &[
7149 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7150 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
7151 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7152 ],
7153 cx,
7154 );
7155 view.delete_line(&DeleteLine, cx);
7156 assert_eq!(view.display_text(cx), "ghi");
7157 assert_eq!(
7158 view.selected_display_ranges(cx),
7159 vec![
7160 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7161 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
7162 ]
7163 );
7164 });
7165
7166 let settings = Settings::test(&cx);
7167 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7168 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7169 view.update(cx, |view, cx| {
7170 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx);
7171 view.delete_line(&DeleteLine, cx);
7172 assert_eq!(view.display_text(cx), "ghi\n");
7173 assert_eq!(
7174 view.selected_display_ranges(cx),
7175 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
7176 );
7177 });
7178 }
7179
7180 #[gpui::test]
7181 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
7182 let settings = Settings::test(&cx);
7183 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7184 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7185 view.update(cx, |view, cx| {
7186 view.select_display_ranges(
7187 &[
7188 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7189 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7190 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7191 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7192 ],
7193 cx,
7194 );
7195 view.duplicate_line(&DuplicateLine, cx);
7196 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
7197 assert_eq!(
7198 view.selected_display_ranges(cx),
7199 vec![
7200 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
7201 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7202 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7203 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
7204 ]
7205 );
7206 });
7207
7208 let settings = Settings::test(&cx);
7209 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7210 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7211 view.update(cx, |view, cx| {
7212 view.select_display_ranges(
7213 &[
7214 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
7215 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
7216 ],
7217 cx,
7218 );
7219 view.duplicate_line(&DuplicateLine, cx);
7220 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
7221 assert_eq!(
7222 view.selected_display_ranges(cx),
7223 vec![
7224 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
7225 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
7226 ]
7227 );
7228 });
7229 }
7230
7231 #[gpui::test]
7232 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
7233 let settings = Settings::test(&cx);
7234 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
7235 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7236 view.update(cx, |view, cx| {
7237 view.fold_ranges(
7238 vec![
7239 Point::new(0, 2)..Point::new(1, 2),
7240 Point::new(2, 3)..Point::new(4, 1),
7241 Point::new(7, 0)..Point::new(8, 4),
7242 ],
7243 cx,
7244 );
7245 view.select_display_ranges(
7246 &[
7247 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7248 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7249 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7250 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
7251 ],
7252 cx,
7253 );
7254 assert_eq!(
7255 view.display_text(cx),
7256 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
7257 );
7258
7259 view.move_line_up(&MoveLineUp, cx);
7260 assert_eq!(
7261 view.display_text(cx),
7262 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
7263 );
7264 assert_eq!(
7265 view.selected_display_ranges(cx),
7266 vec![
7267 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7268 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7269 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
7270 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
7271 ]
7272 );
7273 });
7274
7275 view.update(cx, |view, cx| {
7276 view.move_line_down(&MoveLineDown, cx);
7277 assert_eq!(
7278 view.display_text(cx),
7279 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
7280 );
7281 assert_eq!(
7282 view.selected_display_ranges(cx),
7283 vec![
7284 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7285 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7286 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7287 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
7288 ]
7289 );
7290 });
7291
7292 view.update(cx, |view, cx| {
7293 view.move_line_down(&MoveLineDown, cx);
7294 assert_eq!(
7295 view.display_text(cx),
7296 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
7297 );
7298 assert_eq!(
7299 view.selected_display_ranges(cx),
7300 vec![
7301 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7302 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7303 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7304 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
7305 ]
7306 );
7307 });
7308
7309 view.update(cx, |view, cx| {
7310 view.move_line_up(&MoveLineUp, cx);
7311 assert_eq!(
7312 view.display_text(cx),
7313 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
7314 );
7315 assert_eq!(
7316 view.selected_display_ranges(cx),
7317 vec![
7318 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7319 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7320 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
7321 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
7322 ]
7323 );
7324 });
7325 }
7326
7327 #[gpui::test]
7328 fn test_move_line_up_down_with_blocks(cx: &mut gpui::MutableAppContext) {
7329 let settings = Settings::test(&cx);
7330 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
7331 let snapshot = buffer.read(cx).snapshot(cx);
7332 let (_, editor) =
7333 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7334 editor.update(cx, |editor, cx| {
7335 editor.insert_blocks(
7336 [BlockProperties {
7337 position: snapshot.anchor_after(Point::new(2, 0)),
7338 disposition: BlockDisposition::Below,
7339 height: 1,
7340 render: Arc::new(|_| Empty::new().boxed()),
7341 }],
7342 cx,
7343 );
7344 editor.select_ranges([Point::new(2, 0)..Point::new(2, 0)], None, cx);
7345 editor.move_line_down(&MoveLineDown, cx);
7346 });
7347 }
7348
7349 #[gpui::test]
7350 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
7351 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
7352 let settings = Settings::test(&cx);
7353 let view = cx
7354 .add_window(Default::default(), |cx| {
7355 build_editor(buffer.clone(), settings, cx)
7356 })
7357 .1;
7358
7359 // Cut with three selections. Clipboard text is divided into three slices.
7360 view.update(cx, |view, cx| {
7361 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
7362 view.cut(&Cut, cx);
7363 assert_eq!(view.display_text(cx), "two four six ");
7364 });
7365
7366 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
7367 view.update(cx, |view, cx| {
7368 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
7369 view.paste(&Paste, cx);
7370 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
7371 assert_eq!(
7372 view.selected_display_ranges(cx),
7373 &[
7374 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
7375 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
7376 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
7377 ]
7378 );
7379 });
7380
7381 // Paste again but with only two cursors. Since the number of cursors doesn't
7382 // match the number of slices in the clipboard, the entire clipboard text
7383 // is pasted at each cursor.
7384 view.update(cx, |view, cx| {
7385 view.select_ranges(vec![0..0, 31..31], None, cx);
7386 view.handle_input(&Input("( ".into()), cx);
7387 view.paste(&Paste, cx);
7388 view.handle_input(&Input(") ".into()), cx);
7389 assert_eq!(
7390 view.display_text(cx),
7391 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7392 );
7393 });
7394
7395 view.update(cx, |view, cx| {
7396 view.select_ranges(vec![0..0], None, cx);
7397 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
7398 assert_eq!(
7399 view.display_text(cx),
7400 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7401 );
7402 });
7403
7404 // Cut with three selections, one of which is full-line.
7405 view.update(cx, |view, cx| {
7406 view.select_display_ranges(
7407 &[
7408 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
7409 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7410 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
7411 ],
7412 cx,
7413 );
7414 view.cut(&Cut, cx);
7415 assert_eq!(
7416 view.display_text(cx),
7417 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7418 );
7419 });
7420
7421 // Paste with three selections, noticing how the copied selection that was full-line
7422 // gets inserted before the second cursor.
7423 view.update(cx, |view, cx| {
7424 view.select_display_ranges(
7425 &[
7426 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7427 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7428 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
7429 ],
7430 cx,
7431 );
7432 view.paste(&Paste, cx);
7433 assert_eq!(
7434 view.display_text(cx),
7435 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
7436 );
7437 assert_eq!(
7438 view.selected_display_ranges(cx),
7439 &[
7440 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7441 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7442 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
7443 ]
7444 );
7445 });
7446
7447 // Copy with a single cursor only, which writes the whole line into the clipboard.
7448 view.update(cx, |view, cx| {
7449 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx);
7450 view.copy(&Copy, cx);
7451 });
7452
7453 // Paste with three selections, noticing how the copied full-line selection is inserted
7454 // before the empty selections but replaces the selection that is non-empty.
7455 view.update(cx, |view, cx| {
7456 view.select_display_ranges(
7457 &[
7458 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7459 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
7460 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7461 ],
7462 cx,
7463 );
7464 view.paste(&Paste, cx);
7465 assert_eq!(
7466 view.display_text(cx),
7467 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
7468 );
7469 assert_eq!(
7470 view.selected_display_ranges(cx),
7471 &[
7472 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7473 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7474 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
7475 ]
7476 );
7477 });
7478 }
7479
7480 #[gpui::test]
7481 fn test_select_all(cx: &mut gpui::MutableAppContext) {
7482 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
7483 let settings = Settings::test(&cx);
7484 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7485 view.update(cx, |view, cx| {
7486 view.select_all(&SelectAll, cx);
7487 assert_eq!(
7488 view.selected_display_ranges(cx),
7489 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
7490 );
7491 });
7492 }
7493
7494 #[gpui::test]
7495 fn test_select_line(cx: &mut gpui::MutableAppContext) {
7496 let settings = Settings::test(&cx);
7497 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
7498 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7499 view.update(cx, |view, cx| {
7500 view.select_display_ranges(
7501 &[
7502 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7503 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7504 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7505 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
7506 ],
7507 cx,
7508 );
7509 view.select_line(&SelectLine, cx);
7510 assert_eq!(
7511 view.selected_display_ranges(cx),
7512 vec![
7513 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
7514 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
7515 ]
7516 );
7517 });
7518
7519 view.update(cx, |view, cx| {
7520 view.select_line(&SelectLine, cx);
7521 assert_eq!(
7522 view.selected_display_ranges(cx),
7523 vec![
7524 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
7525 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
7526 ]
7527 );
7528 });
7529
7530 view.update(cx, |view, cx| {
7531 view.select_line(&SelectLine, cx);
7532 assert_eq!(
7533 view.selected_display_ranges(cx),
7534 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
7535 );
7536 });
7537 }
7538
7539 #[gpui::test]
7540 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
7541 let settings = Settings::test(&cx);
7542 let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
7543 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7544 view.update(cx, |view, cx| {
7545 view.fold_ranges(
7546 vec![
7547 Point::new(0, 2)..Point::new(1, 2),
7548 Point::new(2, 3)..Point::new(4, 1),
7549 Point::new(7, 0)..Point::new(8, 4),
7550 ],
7551 cx,
7552 );
7553 view.select_display_ranges(
7554 &[
7555 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7556 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7557 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7558 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
7559 ],
7560 cx,
7561 );
7562 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
7563 });
7564
7565 view.update(cx, |view, cx| {
7566 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
7567 assert_eq!(
7568 view.display_text(cx),
7569 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
7570 );
7571 assert_eq!(
7572 view.selected_display_ranges(cx),
7573 [
7574 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7575 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7576 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
7577 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
7578 ]
7579 );
7580 });
7581
7582 view.update(cx, |view, cx| {
7583 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx);
7584 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
7585 assert_eq!(
7586 view.display_text(cx),
7587 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
7588 );
7589 assert_eq!(
7590 view.selected_display_ranges(cx),
7591 [
7592 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
7593 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
7594 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7595 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
7596 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
7597 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
7598 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
7599 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
7600 ]
7601 );
7602 });
7603 }
7604
7605 #[gpui::test]
7606 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
7607 let settings = Settings::test(&cx);
7608 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
7609 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7610
7611 view.update(cx, |view, cx| {
7612 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx);
7613 });
7614 view.update(cx, |view, cx| {
7615 view.add_selection_above(&AddSelectionAbove, cx);
7616 assert_eq!(
7617 view.selected_display_ranges(cx),
7618 vec![
7619 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7620 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
7621 ]
7622 );
7623 });
7624
7625 view.update(cx, |view, cx| {
7626 view.add_selection_above(&AddSelectionAbove, cx);
7627 assert_eq!(
7628 view.selected_display_ranges(cx),
7629 vec![
7630 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7631 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
7632 ]
7633 );
7634 });
7635
7636 view.update(cx, |view, cx| {
7637 view.add_selection_below(&AddSelectionBelow, cx);
7638 assert_eq!(
7639 view.selected_display_ranges(cx),
7640 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
7641 );
7642 });
7643
7644 view.update(cx, |view, cx| {
7645 view.add_selection_below(&AddSelectionBelow, cx);
7646 assert_eq!(
7647 view.selected_display_ranges(cx),
7648 vec![
7649 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7650 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
7651 ]
7652 );
7653 });
7654
7655 view.update(cx, |view, cx| {
7656 view.add_selection_below(&AddSelectionBelow, cx);
7657 assert_eq!(
7658 view.selected_display_ranges(cx),
7659 vec![
7660 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7661 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
7662 ]
7663 );
7664 });
7665
7666 view.update(cx, |view, cx| {
7667 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx);
7668 });
7669 view.update(cx, |view, cx| {
7670 view.add_selection_below(&AddSelectionBelow, cx);
7671 assert_eq!(
7672 view.selected_display_ranges(cx),
7673 vec![
7674 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7675 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
7676 ]
7677 );
7678 });
7679
7680 view.update(cx, |view, cx| {
7681 view.add_selection_below(&AddSelectionBelow, cx);
7682 assert_eq!(
7683 view.selected_display_ranges(cx),
7684 vec![
7685 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7686 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
7687 ]
7688 );
7689 });
7690
7691 view.update(cx, |view, cx| {
7692 view.add_selection_above(&AddSelectionAbove, cx);
7693 assert_eq!(
7694 view.selected_display_ranges(cx),
7695 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
7696 );
7697 });
7698
7699 view.update(cx, |view, cx| {
7700 view.add_selection_above(&AddSelectionAbove, cx);
7701 assert_eq!(
7702 view.selected_display_ranges(cx),
7703 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
7704 );
7705 });
7706
7707 view.update(cx, |view, cx| {
7708 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx);
7709 view.add_selection_below(&AddSelectionBelow, cx);
7710 assert_eq!(
7711 view.selected_display_ranges(cx),
7712 vec![
7713 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7714 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7715 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7716 ]
7717 );
7718 });
7719
7720 view.update(cx, |view, cx| {
7721 view.add_selection_below(&AddSelectionBelow, cx);
7722 assert_eq!(
7723 view.selected_display_ranges(cx),
7724 vec![
7725 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7726 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7727 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7728 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
7729 ]
7730 );
7731 });
7732
7733 view.update(cx, |view, cx| {
7734 view.add_selection_above(&AddSelectionAbove, cx);
7735 assert_eq!(
7736 view.selected_display_ranges(cx),
7737 vec![
7738 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7739 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7740 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7741 ]
7742 );
7743 });
7744
7745 view.update(cx, |view, cx| {
7746 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx);
7747 });
7748 view.update(cx, |view, cx| {
7749 view.add_selection_above(&AddSelectionAbove, cx);
7750 assert_eq!(
7751 view.selected_display_ranges(cx),
7752 vec![
7753 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
7754 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
7755 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
7756 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
7757 ]
7758 );
7759 });
7760
7761 view.update(cx, |view, cx| {
7762 view.add_selection_below(&AddSelectionBelow, cx);
7763 assert_eq!(
7764 view.selected_display_ranges(cx),
7765 vec![
7766 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
7767 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
7768 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
7769 ]
7770 );
7771 });
7772 }
7773
7774 #[gpui::test]
7775 async fn test_select_larger_smaller_syntax_node(cx: &mut gpui::TestAppContext) {
7776 let settings = cx.read(Settings::test);
7777 let language = Arc::new(Language::new(
7778 LanguageConfig::default(),
7779 Some(tree_sitter_rust::language()),
7780 ));
7781
7782 let text = r#"
7783 use mod1::mod2::{mod3, mod4};
7784
7785 fn fn_1(param1: bool, param2: &str) {
7786 let var1 = "text";
7787 }
7788 "#
7789 .unindent();
7790
7791 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7792 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7793 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7794 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
7795 .await;
7796
7797 view.update(cx, |view, cx| {
7798 view.select_display_ranges(
7799 &[
7800 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7801 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7802 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7803 ],
7804 cx,
7805 );
7806 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7807 });
7808 assert_eq!(
7809 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7810 &[
7811 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
7812 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7813 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
7814 ]
7815 );
7816
7817 view.update(cx, |view, cx| {
7818 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7819 });
7820 assert_eq!(
7821 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7822 &[
7823 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
7824 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
7825 ]
7826 );
7827
7828 view.update(cx, |view, cx| {
7829 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7830 });
7831 assert_eq!(
7832 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7833 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
7834 );
7835
7836 // Trying to expand the selected syntax node one more time has no effect.
7837 view.update(cx, |view, cx| {
7838 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7839 });
7840 assert_eq!(
7841 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7842 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
7843 );
7844
7845 view.update(cx, |view, cx| {
7846 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7847 });
7848 assert_eq!(
7849 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7850 &[
7851 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
7852 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
7853 ]
7854 );
7855
7856 view.update(cx, |view, cx| {
7857 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7858 });
7859 assert_eq!(
7860 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7861 &[
7862 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
7863 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7864 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
7865 ]
7866 );
7867
7868 view.update(cx, |view, cx| {
7869 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7870 });
7871 assert_eq!(
7872 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7873 &[
7874 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7875 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7876 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7877 ]
7878 );
7879
7880 // Trying to shrink the selected syntax node one more time has no effect.
7881 view.update(cx, |view, cx| {
7882 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7883 });
7884 assert_eq!(
7885 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7886 &[
7887 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7888 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7889 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7890 ]
7891 );
7892
7893 // Ensure that we keep expanding the selection if the larger selection starts or ends within
7894 // a fold.
7895 view.update(cx, |view, cx| {
7896 view.fold_ranges(
7897 vec![
7898 Point::new(0, 21)..Point::new(0, 24),
7899 Point::new(3, 20)..Point::new(3, 22),
7900 ],
7901 cx,
7902 );
7903 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7904 });
7905 assert_eq!(
7906 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7907 &[
7908 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
7909 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7910 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
7911 ]
7912 );
7913 }
7914
7915 #[gpui::test]
7916 async fn test_autoindent_selections(cx: &mut gpui::TestAppContext) {
7917 let settings = cx.read(Settings::test);
7918 let language = Arc::new(
7919 Language::new(
7920 LanguageConfig {
7921 brackets: vec![
7922 BracketPair {
7923 start: "{".to_string(),
7924 end: "}".to_string(),
7925 close: false,
7926 newline: true,
7927 },
7928 BracketPair {
7929 start: "(".to_string(),
7930 end: ")".to_string(),
7931 close: false,
7932 newline: true,
7933 },
7934 ],
7935 ..Default::default()
7936 },
7937 Some(tree_sitter_rust::language()),
7938 )
7939 .with_indents_query(
7940 r#"
7941 (_ "(" ")" @end) @indent
7942 (_ "{" "}" @end) @indent
7943 "#,
7944 )
7945 .unwrap(),
7946 );
7947
7948 let text = "fn a() {}";
7949
7950 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7951 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7952 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7953 editor
7954 .condition(&cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
7955 .await;
7956
7957 editor.update(cx, |editor, cx| {
7958 editor.select_ranges([5..5, 8..8, 9..9], None, cx);
7959 editor.newline(&Newline, cx);
7960 assert_eq!(editor.text(cx), "fn a(\n \n) {\n \n}\n");
7961 assert_eq!(
7962 editor.selected_ranges(cx),
7963 &[
7964 Point::new(1, 4)..Point::new(1, 4),
7965 Point::new(3, 4)..Point::new(3, 4),
7966 Point::new(5, 0)..Point::new(5, 0)
7967 ]
7968 );
7969 });
7970 }
7971
7972 #[gpui::test]
7973 async fn test_autoclose_pairs(cx: &mut gpui::TestAppContext) {
7974 let settings = cx.read(Settings::test);
7975 let language = Arc::new(Language::new(
7976 LanguageConfig {
7977 brackets: vec![
7978 BracketPair {
7979 start: "{".to_string(),
7980 end: "}".to_string(),
7981 close: true,
7982 newline: true,
7983 },
7984 BracketPair {
7985 start: "/*".to_string(),
7986 end: " */".to_string(),
7987 close: true,
7988 newline: true,
7989 },
7990 ],
7991 ..Default::default()
7992 },
7993 Some(tree_sitter_rust::language()),
7994 ));
7995
7996 let text = r#"
7997 a
7998
7999 /
8000
8001 "#
8002 .unindent();
8003
8004 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8005 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8006 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8007 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
8008 .await;
8009
8010 view.update(cx, |view, cx| {
8011 view.select_display_ranges(
8012 &[
8013 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
8014 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
8015 ],
8016 cx,
8017 );
8018 view.handle_input(&Input("{".to_string()), cx);
8019 view.handle_input(&Input("{".to_string()), cx);
8020 view.handle_input(&Input("{".to_string()), cx);
8021 assert_eq!(
8022 view.text(cx),
8023 "
8024 {{{}}}
8025 {{{}}}
8026 /
8027
8028 "
8029 .unindent()
8030 );
8031
8032 view.move_right(&MoveRight, cx);
8033 view.handle_input(&Input("}".to_string()), cx);
8034 view.handle_input(&Input("}".to_string()), cx);
8035 view.handle_input(&Input("}".to_string()), cx);
8036 assert_eq!(
8037 view.text(cx),
8038 "
8039 {{{}}}}
8040 {{{}}}}
8041 /
8042
8043 "
8044 .unindent()
8045 );
8046
8047 view.undo(&Undo, cx);
8048 view.handle_input(&Input("/".to_string()), cx);
8049 view.handle_input(&Input("*".to_string()), cx);
8050 assert_eq!(
8051 view.text(cx),
8052 "
8053 /* */
8054 /* */
8055 /
8056
8057 "
8058 .unindent()
8059 );
8060
8061 view.undo(&Undo, cx);
8062 view.select_display_ranges(
8063 &[
8064 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
8065 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
8066 ],
8067 cx,
8068 );
8069 view.handle_input(&Input("*".to_string()), cx);
8070 assert_eq!(
8071 view.text(cx),
8072 "
8073 a
8074
8075 /*
8076 *
8077 "
8078 .unindent()
8079 );
8080 });
8081 }
8082
8083 #[gpui::test]
8084 async fn test_snippets(cx: &mut gpui::TestAppContext) {
8085 let settings = cx.read(Settings::test);
8086
8087 let text = "
8088 a. b
8089 a. b
8090 a. b
8091 "
8092 .unindent();
8093 let buffer = cx.update(|cx| MultiBuffer::build_simple(&text, cx));
8094 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8095
8096 editor.update(cx, |editor, cx| {
8097 let buffer = &editor.snapshot(cx).buffer_snapshot;
8098 let snippet = Snippet::parse("f(${1:one}, ${2:two}, ${1:three})$0").unwrap();
8099 let insertion_ranges = [
8100 Point::new(0, 2).to_offset(buffer)..Point::new(0, 2).to_offset(buffer),
8101 Point::new(1, 2).to_offset(buffer)..Point::new(1, 2).to_offset(buffer),
8102 Point::new(2, 2).to_offset(buffer)..Point::new(2, 2).to_offset(buffer),
8103 ];
8104
8105 editor
8106 .insert_snippet(&insertion_ranges, snippet, cx)
8107 .unwrap();
8108 assert_eq!(
8109 editor.text(cx),
8110 "
8111 a.f(one, two, three) b
8112 a.f(one, two, three) b
8113 a.f(one, two, three) b
8114 "
8115 .unindent()
8116 );
8117 assert_eq!(
8118 editor.selected_ranges::<Point>(cx),
8119 &[
8120 Point::new(0, 4)..Point::new(0, 7),
8121 Point::new(0, 14)..Point::new(0, 19),
8122 Point::new(1, 4)..Point::new(1, 7),
8123 Point::new(1, 14)..Point::new(1, 19),
8124 Point::new(2, 4)..Point::new(2, 7),
8125 Point::new(2, 14)..Point::new(2, 19),
8126 ]
8127 );
8128
8129 // Can't move earlier than the first tab stop
8130 editor.move_to_prev_snippet_tabstop(cx);
8131 assert_eq!(
8132 editor.selected_ranges::<Point>(cx),
8133 &[
8134 Point::new(0, 4)..Point::new(0, 7),
8135 Point::new(0, 14)..Point::new(0, 19),
8136 Point::new(1, 4)..Point::new(1, 7),
8137 Point::new(1, 14)..Point::new(1, 19),
8138 Point::new(2, 4)..Point::new(2, 7),
8139 Point::new(2, 14)..Point::new(2, 19),
8140 ]
8141 );
8142
8143 assert!(editor.move_to_next_snippet_tabstop(cx));
8144 assert_eq!(
8145 editor.selected_ranges::<Point>(cx),
8146 &[
8147 Point::new(0, 9)..Point::new(0, 12),
8148 Point::new(1, 9)..Point::new(1, 12),
8149 Point::new(2, 9)..Point::new(2, 12)
8150 ]
8151 );
8152
8153 editor.move_to_prev_snippet_tabstop(cx);
8154 assert_eq!(
8155 editor.selected_ranges::<Point>(cx),
8156 &[
8157 Point::new(0, 4)..Point::new(0, 7),
8158 Point::new(0, 14)..Point::new(0, 19),
8159 Point::new(1, 4)..Point::new(1, 7),
8160 Point::new(1, 14)..Point::new(1, 19),
8161 Point::new(2, 4)..Point::new(2, 7),
8162 Point::new(2, 14)..Point::new(2, 19),
8163 ]
8164 );
8165
8166 assert!(editor.move_to_next_snippet_tabstop(cx));
8167 assert!(editor.move_to_next_snippet_tabstop(cx));
8168 assert_eq!(
8169 editor.selected_ranges::<Point>(cx),
8170 &[
8171 Point::new(0, 20)..Point::new(0, 20),
8172 Point::new(1, 20)..Point::new(1, 20),
8173 Point::new(2, 20)..Point::new(2, 20)
8174 ]
8175 );
8176
8177 // As soon as the last tab stop is reached, snippet state is gone
8178 editor.move_to_prev_snippet_tabstop(cx);
8179 assert_eq!(
8180 editor.selected_ranges::<Point>(cx),
8181 &[
8182 Point::new(0, 20)..Point::new(0, 20),
8183 Point::new(1, 20)..Point::new(1, 20),
8184 Point::new(2, 20)..Point::new(2, 20)
8185 ]
8186 );
8187 });
8188 }
8189
8190 #[gpui::test]
8191 async fn test_completion(cx: &mut gpui::TestAppContext) {
8192 let settings = cx.read(Settings::test);
8193 let (language_server, mut fake) = cx.update(|cx| {
8194 lsp::LanguageServer::fake_with_capabilities(
8195 lsp::ServerCapabilities {
8196 completion_provider: Some(lsp::CompletionOptions {
8197 trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
8198 ..Default::default()
8199 }),
8200 ..Default::default()
8201 },
8202 cx,
8203 )
8204 });
8205
8206 let text = "
8207 one
8208 two
8209 three
8210 "
8211 .unindent();
8212
8213 let fs = FakeFs::new(cx.background().clone());
8214 fs.insert_file("/file", text).await;
8215
8216 let project = Project::test(fs, cx);
8217
8218 let (worktree, relative_path) = project
8219 .update(cx, |project, cx| {
8220 project.find_or_create_local_worktree("/file", true, cx)
8221 })
8222 .await
8223 .unwrap();
8224 let project_path = ProjectPath {
8225 worktree_id: worktree.read_with(cx, |worktree, _| worktree.id()),
8226 path: relative_path.into(),
8227 };
8228 let buffer = project
8229 .update(cx, |project, cx| project.open_buffer(project_path, cx))
8230 .await
8231 .unwrap();
8232 buffer.update(cx, |buffer, cx| {
8233 buffer.set_language_server(Some(language_server), cx);
8234 });
8235
8236 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8237 buffer.next_notification(&cx).await;
8238
8239 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8240
8241 editor.update(cx, |editor, cx| {
8242 editor.project = Some(project);
8243 editor.select_ranges([Point::new(0, 3)..Point::new(0, 3)], None, cx);
8244 editor.handle_input(&Input(".".to_string()), cx);
8245 });
8246
8247 handle_completion_request(
8248 &mut fake,
8249 "/file",
8250 Point::new(0, 4),
8251 vec![
8252 (Point::new(0, 4)..Point::new(0, 4), "first_completion"),
8253 (Point::new(0, 4)..Point::new(0, 4), "second_completion"),
8254 ],
8255 )
8256 .await;
8257 editor
8258 .condition(&cx, |editor, _| editor.context_menu_visible())
8259 .await;
8260
8261 let apply_additional_edits = editor.update(cx, |editor, cx| {
8262 editor.move_down(&MoveDown, cx);
8263 let apply_additional_edits = editor
8264 .confirm_completion(&ConfirmCompletion(None), cx)
8265 .unwrap();
8266 assert_eq!(
8267 editor.text(cx),
8268 "
8269 one.second_completion
8270 two
8271 three
8272 "
8273 .unindent()
8274 );
8275 apply_additional_edits
8276 });
8277
8278 handle_resolve_completion_request(
8279 &mut fake,
8280 Some((Point::new(2, 5)..Point::new(2, 5), "\nadditional edit")),
8281 )
8282 .await;
8283 apply_additional_edits.await.unwrap();
8284 assert_eq!(
8285 editor.read_with(cx, |editor, cx| editor.text(cx)),
8286 "
8287 one.second_completion
8288 two
8289 three
8290 additional edit
8291 "
8292 .unindent()
8293 );
8294
8295 editor.update(cx, |editor, cx| {
8296 editor.select_ranges(
8297 [
8298 Point::new(1, 3)..Point::new(1, 3),
8299 Point::new(2, 5)..Point::new(2, 5),
8300 ],
8301 None,
8302 cx,
8303 );
8304
8305 editor.handle_input(&Input(" ".to_string()), cx);
8306 assert!(editor.context_menu.is_none());
8307 editor.handle_input(&Input("s".to_string()), cx);
8308 assert!(editor.context_menu.is_none());
8309 });
8310
8311 handle_completion_request(
8312 &mut fake,
8313 "/file",
8314 Point::new(2, 7),
8315 vec![
8316 (Point::new(2, 6)..Point::new(2, 7), "fourth_completion"),
8317 (Point::new(2, 6)..Point::new(2, 7), "fifth_completion"),
8318 (Point::new(2, 6)..Point::new(2, 7), "sixth_completion"),
8319 ],
8320 )
8321 .await;
8322 editor
8323 .condition(&cx, |editor, _| editor.context_menu_visible())
8324 .await;
8325
8326 editor.update(cx, |editor, cx| {
8327 editor.handle_input(&Input("i".to_string()), cx);
8328 });
8329
8330 handle_completion_request(
8331 &mut fake,
8332 "/file",
8333 Point::new(2, 8),
8334 vec![
8335 (Point::new(2, 6)..Point::new(2, 8), "fourth_completion"),
8336 (Point::new(2, 6)..Point::new(2, 8), "fifth_completion"),
8337 (Point::new(2, 6)..Point::new(2, 8), "sixth_completion"),
8338 ],
8339 )
8340 .await;
8341 editor
8342 .condition(&cx, |editor, _| editor.context_menu_visible())
8343 .await;
8344
8345 let apply_additional_edits = editor.update(cx, |editor, cx| {
8346 let apply_additional_edits = editor
8347 .confirm_completion(&ConfirmCompletion(None), cx)
8348 .unwrap();
8349 assert_eq!(
8350 editor.text(cx),
8351 "
8352 one.second_completion
8353 two sixth_completion
8354 three sixth_completion
8355 additional edit
8356 "
8357 .unindent()
8358 );
8359 apply_additional_edits
8360 });
8361 handle_resolve_completion_request(&mut fake, None).await;
8362 apply_additional_edits.await.unwrap();
8363
8364 async fn handle_completion_request(
8365 fake: &mut FakeLanguageServer,
8366 path: &'static str,
8367 position: Point,
8368 completions: Vec<(Range<Point>, &'static str)>,
8369 ) {
8370 fake.handle_request::<lsp::request::Completion, _>(move |params, _| {
8371 assert_eq!(
8372 params.text_document_position.text_document.uri,
8373 lsp::Url::from_file_path(path).unwrap()
8374 );
8375 assert_eq!(
8376 params.text_document_position.position,
8377 lsp::Position::new(position.row, position.column)
8378 );
8379 Some(lsp::CompletionResponse::Array(
8380 completions
8381 .iter()
8382 .map(|(range, new_text)| lsp::CompletionItem {
8383 label: new_text.to_string(),
8384 text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
8385 range: lsp::Range::new(
8386 lsp::Position::new(range.start.row, range.start.column),
8387 lsp::Position::new(range.start.row, range.start.column),
8388 ),
8389 new_text: new_text.to_string(),
8390 })),
8391 ..Default::default()
8392 })
8393 .collect(),
8394 ))
8395 })
8396 .next()
8397 .await;
8398 }
8399
8400 async fn handle_resolve_completion_request(
8401 fake: &mut FakeLanguageServer,
8402 edit: Option<(Range<Point>, &'static str)>,
8403 ) {
8404 fake.handle_request::<lsp::request::ResolveCompletionItem, _>(move |_, _| {
8405 lsp::CompletionItem {
8406 additional_text_edits: edit.clone().map(|(range, new_text)| {
8407 vec![lsp::TextEdit::new(
8408 lsp::Range::new(
8409 lsp::Position::new(range.start.row, range.start.column),
8410 lsp::Position::new(range.end.row, range.end.column),
8411 ),
8412 new_text.to_string(),
8413 )]
8414 }),
8415 ..Default::default()
8416 }
8417 })
8418 .next()
8419 .await;
8420 }
8421 }
8422
8423 #[gpui::test]
8424 async fn test_toggle_comment(cx: &mut gpui::TestAppContext) {
8425 let settings = cx.read(Settings::test);
8426 let language = Arc::new(Language::new(
8427 LanguageConfig {
8428 line_comment: Some("// ".to_string()),
8429 ..Default::default()
8430 },
8431 Some(tree_sitter_rust::language()),
8432 ));
8433
8434 let text = "
8435 fn a() {
8436 //b();
8437 // c();
8438 // d();
8439 }
8440 "
8441 .unindent();
8442
8443 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8444 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8445 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8446
8447 view.update(cx, |editor, cx| {
8448 // If multiple selections intersect a line, the line is only
8449 // toggled once.
8450 editor.select_display_ranges(
8451 &[
8452 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
8453 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
8454 ],
8455 cx,
8456 );
8457 editor.toggle_comments(&ToggleComments, cx);
8458 assert_eq!(
8459 editor.text(cx),
8460 "
8461 fn a() {
8462 b();
8463 c();
8464 d();
8465 }
8466 "
8467 .unindent()
8468 );
8469
8470 // The comment prefix is inserted at the same column for every line
8471 // in a selection.
8472 editor.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx);
8473 editor.toggle_comments(&ToggleComments, cx);
8474 assert_eq!(
8475 editor.text(cx),
8476 "
8477 fn a() {
8478 // b();
8479 // c();
8480 // d();
8481 }
8482 "
8483 .unindent()
8484 );
8485
8486 // If a selection ends at the beginning of a line, that line is not toggled.
8487 editor.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx);
8488 editor.toggle_comments(&ToggleComments, cx);
8489 assert_eq!(
8490 editor.text(cx),
8491 "
8492 fn a() {
8493 // b();
8494 c();
8495 // d();
8496 }
8497 "
8498 .unindent()
8499 );
8500 });
8501 }
8502
8503 #[gpui::test]
8504 fn test_editing_disjoint_excerpts(cx: &mut gpui::MutableAppContext) {
8505 let settings = Settings::test(cx);
8506 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8507 let multibuffer = cx.add_model(|cx| {
8508 let mut multibuffer = MultiBuffer::new(0);
8509 multibuffer.push_excerpts(
8510 buffer.clone(),
8511 [
8512 Point::new(0, 0)..Point::new(0, 4),
8513 Point::new(1, 0)..Point::new(1, 4),
8514 ],
8515 cx,
8516 );
8517 multibuffer
8518 });
8519
8520 assert_eq!(multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb");
8521
8522 let (_, view) = cx.add_window(Default::default(), |cx| {
8523 build_editor(multibuffer, settings, cx)
8524 });
8525 view.update(cx, |view, cx| {
8526 assert_eq!(view.text(cx), "aaaa\nbbbb");
8527 view.select_ranges(
8528 [
8529 Point::new(0, 0)..Point::new(0, 0),
8530 Point::new(1, 0)..Point::new(1, 0),
8531 ],
8532 None,
8533 cx,
8534 );
8535
8536 view.handle_input(&Input("X".to_string()), cx);
8537 assert_eq!(view.text(cx), "Xaaaa\nXbbbb");
8538 assert_eq!(
8539 view.selected_ranges(cx),
8540 [
8541 Point::new(0, 1)..Point::new(0, 1),
8542 Point::new(1, 1)..Point::new(1, 1),
8543 ]
8544 )
8545 });
8546 }
8547
8548 #[gpui::test]
8549 fn test_editing_overlapping_excerpts(cx: &mut gpui::MutableAppContext) {
8550 let settings = Settings::test(cx);
8551 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8552 let multibuffer = cx.add_model(|cx| {
8553 let mut multibuffer = MultiBuffer::new(0);
8554 multibuffer.push_excerpts(
8555 buffer,
8556 [
8557 Point::new(0, 0)..Point::new(1, 4),
8558 Point::new(1, 0)..Point::new(2, 4),
8559 ],
8560 cx,
8561 );
8562 multibuffer
8563 });
8564
8565 assert_eq!(
8566 multibuffer.read(cx).read(cx).text(),
8567 "aaaa\nbbbb\nbbbb\ncccc"
8568 );
8569
8570 let (_, view) = cx.add_window(Default::default(), |cx| {
8571 build_editor(multibuffer, settings, cx)
8572 });
8573 view.update(cx, |view, cx| {
8574 view.select_ranges(
8575 [
8576 Point::new(1, 1)..Point::new(1, 1),
8577 Point::new(2, 3)..Point::new(2, 3),
8578 ],
8579 None,
8580 cx,
8581 );
8582
8583 view.handle_input(&Input("X".to_string()), cx);
8584 assert_eq!(view.text(cx), "aaaa\nbXbbXb\nbXbbXb\ncccc");
8585 assert_eq!(
8586 view.selected_ranges(cx),
8587 [
8588 Point::new(1, 2)..Point::new(1, 2),
8589 Point::new(2, 5)..Point::new(2, 5),
8590 ]
8591 );
8592
8593 view.newline(&Newline, cx);
8594 assert_eq!(view.text(cx), "aaaa\nbX\nbbX\nb\nbX\nbbX\nb\ncccc");
8595 assert_eq!(
8596 view.selected_ranges(cx),
8597 [
8598 Point::new(2, 0)..Point::new(2, 0),
8599 Point::new(6, 0)..Point::new(6, 0),
8600 ]
8601 );
8602 });
8603 }
8604
8605 #[gpui::test]
8606 fn test_refresh_selections(cx: &mut gpui::MutableAppContext) {
8607 let settings = Settings::test(cx);
8608 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8609 let mut excerpt1_id = None;
8610 let multibuffer = cx.add_model(|cx| {
8611 let mut multibuffer = MultiBuffer::new(0);
8612 excerpt1_id = multibuffer
8613 .push_excerpts(
8614 buffer.clone(),
8615 [
8616 Point::new(0, 0)..Point::new(1, 4),
8617 Point::new(1, 0)..Point::new(2, 4),
8618 ],
8619 cx,
8620 )
8621 .into_iter()
8622 .next();
8623 multibuffer
8624 });
8625 assert_eq!(
8626 multibuffer.read(cx).read(cx).text(),
8627 "aaaa\nbbbb\nbbbb\ncccc"
8628 );
8629 let (_, editor) = cx.add_window(Default::default(), |cx| {
8630 let mut editor = build_editor(multibuffer.clone(), settings, cx);
8631 editor.select_ranges(
8632 [
8633 Point::new(1, 3)..Point::new(1, 3),
8634 Point::new(2, 1)..Point::new(2, 1),
8635 ],
8636 None,
8637 cx,
8638 );
8639 editor
8640 });
8641
8642 // Refreshing selections is a no-op when excerpts haven't changed.
8643 editor.update(cx, |editor, cx| {
8644 editor.refresh_selections(cx);
8645 assert_eq!(
8646 editor.selected_ranges(cx),
8647 [
8648 Point::new(1, 3)..Point::new(1, 3),
8649 Point::new(2, 1)..Point::new(2, 1),
8650 ]
8651 );
8652 });
8653
8654 multibuffer.update(cx, |multibuffer, cx| {
8655 multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx);
8656 });
8657 editor.update(cx, |editor, cx| {
8658 // Removing an excerpt causes the first selection to become degenerate.
8659 assert_eq!(
8660 editor.selected_ranges(cx),
8661 [
8662 Point::new(0, 0)..Point::new(0, 0),
8663 Point::new(0, 1)..Point::new(0, 1)
8664 ]
8665 );
8666
8667 // Refreshing selections will relocate the first selection to the original buffer
8668 // location.
8669 editor.refresh_selections(cx);
8670 assert_eq!(
8671 editor.selected_ranges(cx),
8672 [
8673 Point::new(0, 1)..Point::new(0, 1),
8674 Point::new(0, 3)..Point::new(0, 3)
8675 ]
8676 );
8677 });
8678 }
8679
8680 #[gpui::test]
8681 async fn test_extra_newline_insertion(cx: &mut gpui::TestAppContext) {
8682 let settings = cx.read(Settings::test);
8683 let language = Arc::new(Language::new(
8684 LanguageConfig {
8685 brackets: vec![
8686 BracketPair {
8687 start: "{".to_string(),
8688 end: "}".to_string(),
8689 close: true,
8690 newline: true,
8691 },
8692 BracketPair {
8693 start: "/* ".to_string(),
8694 end: " */".to_string(),
8695 close: true,
8696 newline: true,
8697 },
8698 ],
8699 ..Default::default()
8700 },
8701 Some(tree_sitter_rust::language()),
8702 ));
8703
8704 let text = concat!(
8705 "{ }\n", // Suppress rustfmt
8706 " x\n", //
8707 " /* */\n", //
8708 "x\n", //
8709 "{{} }\n", //
8710 );
8711
8712 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8713 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8714 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8715 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
8716 .await;
8717
8718 view.update(cx, |view, cx| {
8719 view.select_display_ranges(
8720 &[
8721 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
8722 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
8723 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
8724 ],
8725 cx,
8726 );
8727 view.newline(&Newline, cx);
8728
8729 assert_eq!(
8730 view.buffer().read(cx).read(cx).text(),
8731 concat!(
8732 "{ \n", // Suppress rustfmt
8733 "\n", //
8734 "}\n", //
8735 " x\n", //
8736 " /* \n", //
8737 " \n", //
8738 " */\n", //
8739 "x\n", //
8740 "{{} \n", //
8741 "}\n", //
8742 )
8743 );
8744 });
8745 }
8746
8747 #[gpui::test]
8748 fn test_highlighted_ranges(cx: &mut gpui::MutableAppContext) {
8749 let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
8750 let settings = Settings::test(&cx);
8751 let (_, editor) = cx.add_window(Default::default(), |cx| {
8752 build_editor(buffer.clone(), settings, cx)
8753 });
8754
8755 editor.update(cx, |editor, cx| {
8756 struct Type1;
8757 struct Type2;
8758
8759 let buffer = buffer.read(cx).snapshot(cx);
8760
8761 let anchor_range = |range: Range<Point>| {
8762 buffer.anchor_after(range.start)..buffer.anchor_after(range.end)
8763 };
8764
8765 editor.highlight_ranges::<Type1>(
8766 vec![
8767 anchor_range(Point::new(2, 1)..Point::new(2, 3)),
8768 anchor_range(Point::new(4, 2)..Point::new(4, 4)),
8769 anchor_range(Point::new(6, 3)..Point::new(6, 5)),
8770 anchor_range(Point::new(8, 4)..Point::new(8, 6)),
8771 ],
8772 Color::red(),
8773 cx,
8774 );
8775 editor.highlight_ranges::<Type2>(
8776 vec![
8777 anchor_range(Point::new(3, 2)..Point::new(3, 5)),
8778 anchor_range(Point::new(5, 3)..Point::new(5, 6)),
8779 anchor_range(Point::new(7, 4)..Point::new(7, 7)),
8780 anchor_range(Point::new(9, 5)..Point::new(9, 8)),
8781 ],
8782 Color::green(),
8783 cx,
8784 );
8785
8786 let snapshot = editor.snapshot(cx);
8787 let mut highlighted_ranges = editor.highlighted_ranges_in_range(
8788 anchor_range(Point::new(3, 4)..Point::new(7, 4)),
8789 &snapshot,
8790 );
8791 // Enforce a consistent ordering based on color without relying on the ordering of the
8792 // highlight's `TypeId` which is non-deterministic.
8793 highlighted_ranges.sort_unstable_by_key(|(_, color)| *color);
8794 assert_eq!(
8795 highlighted_ranges,
8796 &[
8797 (
8798 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 5),
8799 Color::green(),
8800 ),
8801 (
8802 DisplayPoint::new(5, 3)..DisplayPoint::new(5, 6),
8803 Color::green(),
8804 ),
8805 (
8806 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 4),
8807 Color::red(),
8808 ),
8809 (
8810 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
8811 Color::red(),
8812 ),
8813 ]
8814 );
8815 assert_eq!(
8816 editor.highlighted_ranges_in_range(
8817 anchor_range(Point::new(5, 6)..Point::new(6, 4)),
8818 &snapshot,
8819 ),
8820 &[(
8821 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
8822 Color::red(),
8823 )]
8824 );
8825 });
8826 }
8827
8828 #[test]
8829 fn test_combine_syntax_and_fuzzy_match_highlights() {
8830 let string = "abcdefghijklmnop";
8831 let default = HighlightStyle::default();
8832 let syntax_ranges = [
8833 (
8834 0..3,
8835 HighlightStyle {
8836 color: Color::red(),
8837 ..default
8838 },
8839 ),
8840 (
8841 4..8,
8842 HighlightStyle {
8843 color: Color::green(),
8844 ..default
8845 },
8846 ),
8847 ];
8848 let match_indices = [4, 6, 7, 8];
8849 assert_eq!(
8850 combine_syntax_and_fuzzy_match_highlights(
8851 &string,
8852 default,
8853 syntax_ranges.into_iter(),
8854 &match_indices,
8855 ),
8856 &[
8857 (
8858 0..3,
8859 HighlightStyle {
8860 color: Color::red(),
8861 ..default
8862 },
8863 ),
8864 (
8865 4..5,
8866 HighlightStyle {
8867 color: Color::green(),
8868 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
8869 ..default
8870 },
8871 ),
8872 (
8873 5..6,
8874 HighlightStyle {
8875 color: Color::green(),
8876 ..default
8877 },
8878 ),
8879 (
8880 6..8,
8881 HighlightStyle {
8882 color: Color::green(),
8883 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
8884 ..default
8885 },
8886 ),
8887 (
8888 8..9,
8889 HighlightStyle {
8890 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
8891 ..default
8892 },
8893 ),
8894 ]
8895 );
8896 }
8897
8898 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
8899 let point = DisplayPoint::new(row as u32, column as u32);
8900 point..point
8901 }
8902
8903 fn build_editor(
8904 buffer: ModelHandle<MultiBuffer>,
8905 settings: Settings,
8906 cx: &mut ViewContext<Editor>,
8907 ) -> Editor {
8908 let settings = watch::channel_with(settings);
8909 Editor::new(EditorMode::Full, buffer, None, settings.1, None, cx)
8910 }
8911}
8912
8913trait RangeExt<T> {
8914 fn sorted(&self) -> Range<T>;
8915 fn to_inclusive(&self) -> RangeInclusive<T>;
8916}
8917
8918impl<T: Ord + Clone> RangeExt<T> for Range<T> {
8919 fn sorted(&self) -> Self {
8920 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
8921 }
8922
8923 fn to_inclusive(&self) -> RangeInclusive<T> {
8924 self.start.clone()..=self.end.clone()
8925 }
8926}