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 project = workspace.project();
944 if project.read(cx).is_remote() {
945 cx.propagate_action();
946 } else if let Some(buffer) = project
947 .update(cx, |project, cx| project.create_buffer(cx))
948 .log_err()
949 {
950 workspace.open_item(BufferItemHandle(buffer), cx);
951 }
952 }
953
954 pub fn replica_id(&self, cx: &AppContext) -> ReplicaId {
955 self.buffer.read(cx).replica_id()
956 }
957
958 pub fn buffer(&self) -> &ModelHandle<MultiBuffer> {
959 &self.buffer
960 }
961
962 pub fn title(&self, cx: &AppContext) -> String {
963 self.buffer().read(cx).title(cx)
964 }
965
966 pub fn snapshot(&mut self, cx: &mut MutableAppContext) -> EditorSnapshot {
967 EditorSnapshot {
968 mode: self.mode,
969 display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
970 scroll_position: self.scroll_position,
971 scroll_top_anchor: self.scroll_top_anchor.clone(),
972 placeholder_text: self.placeholder_text.clone(),
973 is_focused: self
974 .handle
975 .upgrade(cx)
976 .map_or(false, |handle| handle.is_focused(cx)),
977 }
978 }
979
980 pub fn language<'a>(&self, cx: &'a AppContext) -> Option<&'a Arc<Language>> {
981 self.buffer.read(cx).language(cx)
982 }
983
984 fn style(&self, cx: &AppContext) -> EditorStyle {
985 build_style(&*self.settings.borrow(), self.get_field_editor_theme, cx)
986 }
987
988 pub fn set_placeholder_text(
989 &mut self,
990 placeholder_text: impl Into<Arc<str>>,
991 cx: &mut ViewContext<Self>,
992 ) {
993 self.placeholder_text = Some(placeholder_text.into());
994 cx.notify();
995 }
996
997 pub fn set_vertical_scroll_margin(&mut self, margin_rows: usize, cx: &mut ViewContext<Self>) {
998 self.vertical_scroll_margin = margin_rows as f32;
999 cx.notify();
1000 }
1001
1002 pub fn set_scroll_position(&mut self, scroll_position: Vector2F, cx: &mut ViewContext<Self>) {
1003 let map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1004
1005 if scroll_position.y() == 0. {
1006 self.scroll_top_anchor = None;
1007 self.scroll_position = scroll_position;
1008 } else {
1009 let scroll_top_buffer_offset =
1010 DisplayPoint::new(scroll_position.y() as u32, 0).to_offset(&map, Bias::Right);
1011 let anchor = map
1012 .buffer_snapshot
1013 .anchor_at(scroll_top_buffer_offset, Bias::Right);
1014 self.scroll_position = vec2f(
1015 scroll_position.x(),
1016 scroll_position.y() - anchor.to_display_point(&map).row() as f32,
1017 );
1018 self.scroll_top_anchor = Some(anchor);
1019 }
1020
1021 cx.notify();
1022 }
1023
1024 pub fn scroll_position(&self, cx: &mut ViewContext<Self>) -> Vector2F {
1025 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1026 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor)
1027 }
1028
1029 pub fn clamp_scroll_left(&mut self, max: f32) -> bool {
1030 if max < self.scroll_position.x() {
1031 self.scroll_position.set_x(max);
1032 true
1033 } else {
1034 false
1035 }
1036 }
1037
1038 pub fn autoscroll_vertically(
1039 &mut self,
1040 viewport_height: f32,
1041 line_height: f32,
1042 cx: &mut ViewContext<Self>,
1043 ) -> bool {
1044 let visible_lines = viewport_height / line_height;
1045 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1046 let mut scroll_position =
1047 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor);
1048 let max_scroll_top = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
1049 (display_map.max_point().row() as f32 - visible_lines + 1.).max(0.)
1050 } else {
1051 display_map.max_point().row().saturating_sub(1) as f32
1052 };
1053 if scroll_position.y() > max_scroll_top {
1054 scroll_position.set_y(max_scroll_top);
1055 self.set_scroll_position(scroll_position, cx);
1056 }
1057
1058 let autoscroll = if let Some(autoscroll) = self.autoscroll_request.take() {
1059 autoscroll
1060 } else {
1061 return false;
1062 };
1063
1064 let first_cursor_top;
1065 let last_cursor_bottom;
1066 if let Some(highlighted_rows) = &self.highlighted_rows {
1067 first_cursor_top = highlighted_rows.start as f32;
1068 last_cursor_bottom = first_cursor_top + 1.;
1069 } else if autoscroll == Autoscroll::Newest {
1070 let newest_selection =
1071 self.newest_selection_with_snapshot::<Point>(&display_map.buffer_snapshot);
1072 first_cursor_top = newest_selection.head().to_display_point(&display_map).row() as f32;
1073 last_cursor_bottom = first_cursor_top + 1.;
1074 } else {
1075 let selections = self.local_selections::<Point>(cx);
1076 first_cursor_top = selections
1077 .first()
1078 .unwrap()
1079 .head()
1080 .to_display_point(&display_map)
1081 .row() as f32;
1082 last_cursor_bottom = selections
1083 .last()
1084 .unwrap()
1085 .head()
1086 .to_display_point(&display_map)
1087 .row() as f32
1088 + 1.0;
1089 }
1090
1091 let margin = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
1092 0.
1093 } else {
1094 ((visible_lines - (last_cursor_bottom - first_cursor_top)) / 2.0).floor()
1095 };
1096 if margin < 0.0 {
1097 return false;
1098 }
1099
1100 match autoscroll {
1101 Autoscroll::Fit | Autoscroll::Newest => {
1102 let margin = margin.min(self.vertical_scroll_margin);
1103 let target_top = (first_cursor_top - margin).max(0.0);
1104 let target_bottom = last_cursor_bottom + margin;
1105 let start_row = scroll_position.y();
1106 let end_row = start_row + visible_lines;
1107
1108 if target_top < start_row {
1109 scroll_position.set_y(target_top);
1110 self.set_scroll_position(scroll_position, cx);
1111 } else if target_bottom >= end_row {
1112 scroll_position.set_y(target_bottom - visible_lines);
1113 self.set_scroll_position(scroll_position, cx);
1114 }
1115 }
1116 Autoscroll::Center => {
1117 scroll_position.set_y((first_cursor_top - margin).max(0.0));
1118 self.set_scroll_position(scroll_position, cx);
1119 }
1120 }
1121
1122 true
1123 }
1124
1125 pub fn autoscroll_horizontally(
1126 &mut self,
1127 start_row: u32,
1128 viewport_width: f32,
1129 scroll_width: f32,
1130 max_glyph_width: f32,
1131 layouts: &[text_layout::Line],
1132 cx: &mut ViewContext<Self>,
1133 ) -> bool {
1134 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1135 let selections = self.local_selections::<Point>(cx);
1136
1137 let mut target_left;
1138 let mut target_right;
1139
1140 if self.highlighted_rows.is_some() {
1141 target_left = 0.0_f32;
1142 target_right = 0.0_f32;
1143 } else {
1144 target_left = std::f32::INFINITY;
1145 target_right = 0.0_f32;
1146 for selection in selections {
1147 let head = selection.head().to_display_point(&display_map);
1148 if head.row() >= start_row && head.row() < start_row + layouts.len() as u32 {
1149 let start_column = head.column().saturating_sub(3);
1150 let end_column = cmp::min(display_map.line_len(head.row()), head.column() + 3);
1151 target_left = target_left.min(
1152 layouts[(head.row() - start_row) as usize]
1153 .x_for_index(start_column as usize),
1154 );
1155 target_right = target_right.max(
1156 layouts[(head.row() - start_row) as usize].x_for_index(end_column as usize)
1157 + max_glyph_width,
1158 );
1159 }
1160 }
1161 }
1162
1163 target_right = target_right.min(scroll_width);
1164
1165 if target_right - target_left > viewport_width {
1166 return false;
1167 }
1168
1169 let scroll_left = self.scroll_position.x() * max_glyph_width;
1170 let scroll_right = scroll_left + viewport_width;
1171
1172 if target_left < scroll_left {
1173 self.scroll_position.set_x(target_left / max_glyph_width);
1174 true
1175 } else if target_right > scroll_right {
1176 self.scroll_position
1177 .set_x((target_right - viewport_width) / max_glyph_width);
1178 true
1179 } else {
1180 false
1181 }
1182 }
1183
1184 fn select(&mut self, Select(phase): &Select, cx: &mut ViewContext<Self>) {
1185 self.hide_context_menu(cx);
1186
1187 match phase {
1188 SelectPhase::Begin {
1189 position,
1190 add,
1191 click_count,
1192 } => self.begin_selection(*position, *add, *click_count, cx),
1193 SelectPhase::BeginColumnar {
1194 position,
1195 overshoot,
1196 } => self.begin_columnar_selection(*position, *overshoot, cx),
1197 SelectPhase::Extend {
1198 position,
1199 click_count,
1200 } => self.extend_selection(*position, *click_count, cx),
1201 SelectPhase::Update {
1202 position,
1203 overshoot,
1204 scroll_position,
1205 } => self.update_selection(*position, *overshoot, *scroll_position, cx),
1206 SelectPhase::End => self.end_selection(cx),
1207 }
1208 }
1209
1210 fn extend_selection(
1211 &mut self,
1212 position: DisplayPoint,
1213 click_count: usize,
1214 cx: &mut ViewContext<Self>,
1215 ) {
1216 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1217 let tail = self
1218 .newest_selection_with_snapshot::<usize>(&display_map.buffer_snapshot)
1219 .tail();
1220 self.begin_selection(position, false, click_count, cx);
1221
1222 let position = position.to_offset(&display_map, Bias::Left);
1223 let tail_anchor = display_map.buffer_snapshot.anchor_before(tail);
1224 let mut pending = self.pending_selection.clone().unwrap();
1225
1226 if position >= tail {
1227 pending.selection.start = tail_anchor.clone();
1228 } else {
1229 pending.selection.end = tail_anchor.clone();
1230 pending.selection.reversed = true;
1231 }
1232
1233 match &mut pending.mode {
1234 SelectMode::Word(range) | SelectMode::Line(range) => {
1235 *range = tail_anchor.clone()..tail_anchor
1236 }
1237 _ => {}
1238 }
1239
1240 self.set_selections(self.selections.clone(), Some(pending), cx);
1241 }
1242
1243 fn begin_selection(
1244 &mut self,
1245 position: DisplayPoint,
1246 add: bool,
1247 click_count: usize,
1248 cx: &mut ViewContext<Self>,
1249 ) {
1250 if !self.focused {
1251 cx.focus_self();
1252 cx.emit(Event::Activate);
1253 }
1254
1255 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1256 let buffer = &display_map.buffer_snapshot;
1257 let newest_selection = self.newest_anchor_selection().clone();
1258
1259 let start;
1260 let end;
1261 let mode;
1262 match click_count {
1263 1 => {
1264 start = buffer.anchor_before(position.to_point(&display_map));
1265 end = start.clone();
1266 mode = SelectMode::Character;
1267 }
1268 2 => {
1269 let range = movement::surrounding_word(&display_map, position);
1270 start = buffer.anchor_before(range.start.to_point(&display_map));
1271 end = buffer.anchor_before(range.end.to_point(&display_map));
1272 mode = SelectMode::Word(start.clone()..end.clone());
1273 }
1274 3 => {
1275 let position = display_map
1276 .clip_point(position, Bias::Left)
1277 .to_point(&display_map);
1278 let line_start = display_map.prev_line_boundary(position).0;
1279 let next_line_start = buffer.clip_point(
1280 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1281 Bias::Left,
1282 );
1283 start = buffer.anchor_before(line_start);
1284 end = buffer.anchor_before(next_line_start);
1285 mode = SelectMode::Line(start.clone()..end.clone());
1286 }
1287 _ => {
1288 start = buffer.anchor_before(0);
1289 end = buffer.anchor_before(buffer.len());
1290 mode = SelectMode::All;
1291 }
1292 }
1293
1294 self.push_to_nav_history(newest_selection.head(), Some(end.to_point(&buffer)), cx);
1295
1296 let selection = Selection {
1297 id: post_inc(&mut self.next_selection_id),
1298 start,
1299 end,
1300 reversed: false,
1301 goal: SelectionGoal::None,
1302 };
1303
1304 let mut selections;
1305 if add {
1306 selections = self.selections.clone();
1307 // Remove the newest selection if it was added due to a previous mouse up
1308 // within this multi-click.
1309 if click_count > 1 {
1310 selections = self
1311 .selections
1312 .iter()
1313 .filter(|selection| selection.id != newest_selection.id)
1314 .cloned()
1315 .collect();
1316 }
1317 } else {
1318 selections = Arc::from([]);
1319 }
1320 self.set_selections(selections, Some(PendingSelection { selection, mode }), cx);
1321
1322 cx.notify();
1323 }
1324
1325 fn begin_columnar_selection(
1326 &mut self,
1327 position: DisplayPoint,
1328 overshoot: u32,
1329 cx: &mut ViewContext<Self>,
1330 ) {
1331 if !self.focused {
1332 cx.focus_self();
1333 cx.emit(Event::Activate);
1334 }
1335
1336 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1337 let tail = self
1338 .newest_selection_with_snapshot::<Point>(&display_map.buffer_snapshot)
1339 .tail();
1340 self.columnar_selection_tail = Some(display_map.buffer_snapshot.anchor_before(tail));
1341
1342 self.select_columns(
1343 tail.to_display_point(&display_map),
1344 position,
1345 overshoot,
1346 &display_map,
1347 cx,
1348 );
1349 }
1350
1351 fn update_selection(
1352 &mut self,
1353 position: DisplayPoint,
1354 overshoot: u32,
1355 scroll_position: Vector2F,
1356 cx: &mut ViewContext<Self>,
1357 ) {
1358 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1359
1360 if let Some(tail) = self.columnar_selection_tail.as_ref() {
1361 let tail = tail.to_display_point(&display_map);
1362 self.select_columns(tail, position, overshoot, &display_map, cx);
1363 } else if let Some(mut pending) = self.pending_selection.clone() {
1364 let buffer = self.buffer.read(cx).snapshot(cx);
1365 let head;
1366 let tail;
1367 match &pending.mode {
1368 SelectMode::Character => {
1369 head = position.to_point(&display_map);
1370 tail = pending.selection.tail().to_point(&buffer);
1371 }
1372 SelectMode::Word(original_range) => {
1373 let original_display_range = original_range.start.to_display_point(&display_map)
1374 ..original_range.end.to_display_point(&display_map);
1375 let original_buffer_range = original_display_range.start.to_point(&display_map)
1376 ..original_display_range.end.to_point(&display_map);
1377 if movement::is_inside_word(&display_map, position)
1378 || original_display_range.contains(&position)
1379 {
1380 let word_range = movement::surrounding_word(&display_map, position);
1381 if word_range.start < original_display_range.start {
1382 head = word_range.start.to_point(&display_map);
1383 } else {
1384 head = word_range.end.to_point(&display_map);
1385 }
1386 } else {
1387 head = position.to_point(&display_map);
1388 }
1389
1390 if head <= original_buffer_range.start {
1391 tail = original_buffer_range.end;
1392 } else {
1393 tail = original_buffer_range.start;
1394 }
1395 }
1396 SelectMode::Line(original_range) => {
1397 let original_range = original_range.to_point(&display_map.buffer_snapshot);
1398
1399 let position = display_map
1400 .clip_point(position, Bias::Left)
1401 .to_point(&display_map);
1402 let line_start = display_map.prev_line_boundary(position).0;
1403 let next_line_start = buffer.clip_point(
1404 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1405 Bias::Left,
1406 );
1407
1408 if line_start < original_range.start {
1409 head = line_start
1410 } else {
1411 head = next_line_start
1412 }
1413
1414 if head <= original_range.start {
1415 tail = original_range.end;
1416 } else {
1417 tail = original_range.start;
1418 }
1419 }
1420 SelectMode::All => {
1421 return;
1422 }
1423 };
1424
1425 if head < tail {
1426 pending.selection.start = buffer.anchor_before(head);
1427 pending.selection.end = buffer.anchor_before(tail);
1428 pending.selection.reversed = true;
1429 } else {
1430 pending.selection.start = buffer.anchor_before(tail);
1431 pending.selection.end = buffer.anchor_before(head);
1432 pending.selection.reversed = false;
1433 }
1434 self.set_selections(self.selections.clone(), Some(pending), cx);
1435 } else {
1436 log::error!("update_selection dispatched with no pending selection");
1437 return;
1438 }
1439
1440 self.set_scroll_position(scroll_position, cx);
1441 cx.notify();
1442 }
1443
1444 fn end_selection(&mut self, cx: &mut ViewContext<Self>) {
1445 self.columnar_selection_tail.take();
1446 if self.pending_selection.is_some() {
1447 let selections = self.local_selections::<usize>(cx);
1448 self.update_selections(selections, None, cx);
1449 }
1450 }
1451
1452 fn select_columns(
1453 &mut self,
1454 tail: DisplayPoint,
1455 head: DisplayPoint,
1456 overshoot: u32,
1457 display_map: &DisplaySnapshot,
1458 cx: &mut ViewContext<Self>,
1459 ) {
1460 let start_row = cmp::min(tail.row(), head.row());
1461 let end_row = cmp::max(tail.row(), head.row());
1462 let start_column = cmp::min(tail.column(), head.column() + overshoot);
1463 let end_column = cmp::max(tail.column(), head.column() + overshoot);
1464 let reversed = start_column < tail.column();
1465
1466 let selections = (start_row..=end_row)
1467 .filter_map(|row| {
1468 if start_column <= display_map.line_len(row) && !display_map.is_block_line(row) {
1469 let start = display_map
1470 .clip_point(DisplayPoint::new(row, start_column), Bias::Left)
1471 .to_point(&display_map);
1472 let end = display_map
1473 .clip_point(DisplayPoint::new(row, end_column), Bias::Right)
1474 .to_point(&display_map);
1475 Some(Selection {
1476 id: post_inc(&mut self.next_selection_id),
1477 start,
1478 end,
1479 reversed,
1480 goal: SelectionGoal::None,
1481 })
1482 } else {
1483 None
1484 }
1485 })
1486 .collect::<Vec<_>>();
1487
1488 self.update_selections(selections, None, cx);
1489 cx.notify();
1490 }
1491
1492 pub fn is_selecting(&self) -> bool {
1493 self.pending_selection.is_some() || self.columnar_selection_tail.is_some()
1494 }
1495
1496 pub fn cancel(&mut self, _: &Cancel, cx: &mut ViewContext<Self>) {
1497 if self.take_rename(cx).is_some() {
1498 return;
1499 }
1500
1501 if self.hide_context_menu(cx).is_some() {
1502 return;
1503 }
1504
1505 if self.snippet_stack.pop().is_some() {
1506 return;
1507 }
1508
1509 if self.mode != EditorMode::Full {
1510 cx.propagate_action();
1511 return;
1512 }
1513
1514 if self.active_diagnostics.is_some() {
1515 self.dismiss_diagnostics(cx);
1516 } else if let Some(pending) = self.pending_selection.clone() {
1517 let mut selections = self.selections.clone();
1518 if selections.is_empty() {
1519 selections = Arc::from([pending.selection]);
1520 }
1521 self.set_selections(selections, None, cx);
1522 self.request_autoscroll(Autoscroll::Fit, cx);
1523 } else {
1524 let mut oldest_selection = self.oldest_selection::<usize>(&cx);
1525 if self.selection_count() == 1 {
1526 if oldest_selection.is_empty() {
1527 cx.propagate_action();
1528 return;
1529 }
1530
1531 oldest_selection.start = oldest_selection.head().clone();
1532 oldest_selection.end = oldest_selection.head().clone();
1533 }
1534 self.update_selections(vec![oldest_selection], Some(Autoscroll::Fit), cx);
1535 }
1536 }
1537
1538 #[cfg(any(test, feature = "test-support"))]
1539 pub fn selected_ranges<D: TextDimension + Ord + Sub<D, Output = D>>(
1540 &self,
1541 cx: &mut MutableAppContext,
1542 ) -> Vec<Range<D>> {
1543 self.local_selections::<D>(cx)
1544 .iter()
1545 .map(|s| {
1546 if s.reversed {
1547 s.end.clone()..s.start.clone()
1548 } else {
1549 s.start.clone()..s.end.clone()
1550 }
1551 })
1552 .collect()
1553 }
1554
1555 #[cfg(any(test, feature = "test-support"))]
1556 pub fn selected_display_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
1557 let display_map = self
1558 .display_map
1559 .update(cx, |display_map, cx| display_map.snapshot(cx));
1560 self.selections
1561 .iter()
1562 .chain(
1563 self.pending_selection
1564 .as_ref()
1565 .map(|pending| &pending.selection),
1566 )
1567 .map(|s| {
1568 if s.reversed {
1569 s.end.to_display_point(&display_map)..s.start.to_display_point(&display_map)
1570 } else {
1571 s.start.to_display_point(&display_map)..s.end.to_display_point(&display_map)
1572 }
1573 })
1574 .collect()
1575 }
1576
1577 pub fn select_ranges<I, T>(
1578 &mut self,
1579 ranges: I,
1580 autoscroll: Option<Autoscroll>,
1581 cx: &mut ViewContext<Self>,
1582 ) where
1583 I: IntoIterator<Item = Range<T>>,
1584 T: ToOffset,
1585 {
1586 let buffer = self.buffer.read(cx).snapshot(cx);
1587 let selections = ranges
1588 .into_iter()
1589 .map(|range| {
1590 let mut start = range.start.to_offset(&buffer);
1591 let mut end = range.end.to_offset(&buffer);
1592 let reversed = if start > end {
1593 mem::swap(&mut start, &mut end);
1594 true
1595 } else {
1596 false
1597 };
1598 Selection {
1599 id: post_inc(&mut self.next_selection_id),
1600 start,
1601 end,
1602 reversed,
1603 goal: SelectionGoal::None,
1604 }
1605 })
1606 .collect::<Vec<_>>();
1607 self.update_selections(selections, autoscroll, cx);
1608 }
1609
1610 #[cfg(any(test, feature = "test-support"))]
1611 pub fn select_display_ranges<'a, T>(&mut self, ranges: T, cx: &mut ViewContext<Self>)
1612 where
1613 T: IntoIterator<Item = &'a Range<DisplayPoint>>,
1614 {
1615 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1616 let selections = ranges
1617 .into_iter()
1618 .map(|range| {
1619 let mut start = range.start;
1620 let mut end = range.end;
1621 let reversed = if start > end {
1622 mem::swap(&mut start, &mut end);
1623 true
1624 } else {
1625 false
1626 };
1627 Selection {
1628 id: post_inc(&mut self.next_selection_id),
1629 start: start.to_point(&display_map),
1630 end: end.to_point(&display_map),
1631 reversed,
1632 goal: SelectionGoal::None,
1633 }
1634 })
1635 .collect();
1636 self.update_selections(selections, None, cx);
1637 }
1638
1639 pub fn handle_input(&mut self, action: &Input, cx: &mut ViewContext<Self>) {
1640 let text = action.0.as_ref();
1641 if !self.skip_autoclose_end(text, cx) {
1642 self.start_transaction(cx);
1643 if !self.surround_with_pair(text, cx) {
1644 self.insert(text, cx);
1645 self.autoclose_pairs(cx);
1646 }
1647 self.end_transaction(cx);
1648 self.trigger_completion_on_input(text, cx);
1649 }
1650 }
1651
1652 pub fn newline(&mut self, _: &Newline, cx: &mut ViewContext<Self>) {
1653 self.start_transaction(cx);
1654 let mut old_selections = SmallVec::<[_; 32]>::new();
1655 {
1656 let selections = self.local_selections::<usize>(cx);
1657 let buffer = self.buffer.read(cx).snapshot(cx);
1658 for selection in selections.iter() {
1659 let start_point = selection.start.to_point(&buffer);
1660 let indent = buffer
1661 .indent_column_for_line(start_point.row)
1662 .min(start_point.column);
1663 let start = selection.start;
1664 let end = selection.end;
1665
1666 let mut insert_extra_newline = false;
1667 if let Some(language) = buffer.language() {
1668 let leading_whitespace_len = buffer
1669 .reversed_chars_at(start)
1670 .take_while(|c| c.is_whitespace() && *c != '\n')
1671 .map(|c| c.len_utf8())
1672 .sum::<usize>();
1673
1674 let trailing_whitespace_len = buffer
1675 .chars_at(end)
1676 .take_while(|c| c.is_whitespace() && *c != '\n')
1677 .map(|c| c.len_utf8())
1678 .sum::<usize>();
1679
1680 insert_extra_newline = language.brackets().iter().any(|pair| {
1681 let pair_start = pair.start.trim_end();
1682 let pair_end = pair.end.trim_start();
1683
1684 pair.newline
1685 && buffer.contains_str_at(end + trailing_whitespace_len, pair_end)
1686 && buffer.contains_str_at(
1687 (start - leading_whitespace_len).saturating_sub(pair_start.len()),
1688 pair_start,
1689 )
1690 });
1691 }
1692
1693 old_selections.push((
1694 selection.id,
1695 buffer.anchor_after(end),
1696 start..end,
1697 indent,
1698 insert_extra_newline,
1699 ));
1700 }
1701 }
1702
1703 self.buffer.update(cx, |buffer, cx| {
1704 let mut delta = 0_isize;
1705 let mut pending_edit: Option<PendingEdit> = None;
1706 for (_, _, range, indent, insert_extra_newline) in &old_selections {
1707 if pending_edit.as_ref().map_or(false, |pending| {
1708 pending.indent != *indent
1709 || pending.insert_extra_newline != *insert_extra_newline
1710 }) {
1711 let pending = pending_edit.take().unwrap();
1712 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1713 new_text.push('\n');
1714 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1715 if pending.insert_extra_newline {
1716 new_text = new_text.repeat(2);
1717 }
1718 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1719 delta += pending.delta;
1720 }
1721
1722 let start = (range.start as isize + delta) as usize;
1723 let end = (range.end as isize + delta) as usize;
1724 let mut text_len = *indent as usize + 1;
1725 if *insert_extra_newline {
1726 text_len *= 2;
1727 }
1728
1729 let pending = pending_edit.get_or_insert_with(Default::default);
1730 pending.delta += text_len as isize - (end - start) as isize;
1731 pending.indent = *indent;
1732 pending.insert_extra_newline = *insert_extra_newline;
1733 pending.ranges.push(start..end);
1734 }
1735
1736 let pending = pending_edit.unwrap();
1737 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1738 new_text.push('\n');
1739 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1740 if pending.insert_extra_newline {
1741 new_text = new_text.repeat(2);
1742 }
1743 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1744
1745 let buffer = buffer.read(cx);
1746 self.selections = self
1747 .selections
1748 .iter()
1749 .cloned()
1750 .zip(old_selections)
1751 .map(
1752 |(mut new_selection, (_, end_anchor, _, _, insert_extra_newline))| {
1753 let mut cursor = end_anchor.to_point(&buffer);
1754 if insert_extra_newline {
1755 cursor.row -= 1;
1756 cursor.column = buffer.line_len(cursor.row);
1757 }
1758 let anchor = buffer.anchor_after(cursor);
1759 new_selection.start = anchor.clone();
1760 new_selection.end = anchor;
1761 new_selection
1762 },
1763 )
1764 .collect();
1765 });
1766
1767 self.request_autoscroll(Autoscroll::Fit, cx);
1768 self.end_transaction(cx);
1769
1770 #[derive(Default)]
1771 struct PendingEdit {
1772 indent: u32,
1773 insert_extra_newline: bool,
1774 delta: isize,
1775 ranges: SmallVec<[Range<usize>; 32]>,
1776 }
1777 }
1778
1779 pub fn insert(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1780 self.start_transaction(cx);
1781
1782 let old_selections = self.local_selections::<usize>(cx);
1783 let selection_anchors = self.buffer.update(cx, |buffer, cx| {
1784 let anchors = {
1785 let snapshot = buffer.read(cx);
1786 old_selections
1787 .iter()
1788 .map(|s| (s.id, s.goal, snapshot.anchor_after(s.end)))
1789 .collect::<Vec<_>>()
1790 };
1791 let edit_ranges = old_selections.iter().map(|s| s.start..s.end);
1792 buffer.edit_with_autoindent(edit_ranges, text, cx);
1793 anchors
1794 });
1795
1796 let selections = {
1797 let snapshot = self.buffer.read(cx).read(cx);
1798 selection_anchors
1799 .into_iter()
1800 .map(|(id, goal, position)| {
1801 let position = position.to_offset(&snapshot);
1802 Selection {
1803 id,
1804 start: position,
1805 end: position,
1806 goal,
1807 reversed: false,
1808 }
1809 })
1810 .collect()
1811 };
1812 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1813 self.end_transaction(cx);
1814 }
1815
1816 fn trigger_completion_on_input(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1817 let selection = self.newest_anchor_selection();
1818 if self
1819 .buffer
1820 .read(cx)
1821 .is_completion_trigger(selection.head(), text, cx)
1822 {
1823 self.show_completions(&ShowCompletions, cx);
1824 } else {
1825 self.hide_context_menu(cx);
1826 }
1827 }
1828
1829 fn surround_with_pair(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
1830 let snapshot = self.buffer.read(cx).snapshot(cx);
1831 if let Some(pair) = snapshot
1832 .language()
1833 .and_then(|language| language.brackets().iter().find(|b| b.start == text))
1834 .cloned()
1835 {
1836 if self
1837 .local_selections::<usize>(cx)
1838 .iter()
1839 .any(|selection| selection.is_empty())
1840 {
1841 false
1842 } else {
1843 let mut selections = self.selections.to_vec();
1844 for selection in &mut selections {
1845 selection.end = selection.end.bias_left(&snapshot);
1846 }
1847 drop(snapshot);
1848
1849 self.buffer.update(cx, |buffer, cx| {
1850 buffer.edit(
1851 selections.iter().map(|s| s.start.clone()..s.start.clone()),
1852 &pair.start,
1853 cx,
1854 );
1855 buffer.edit(
1856 selections.iter().map(|s| s.end.clone()..s.end.clone()),
1857 &pair.end,
1858 cx,
1859 );
1860 });
1861
1862 let snapshot = self.buffer.read(cx).read(cx);
1863 for selection in &mut selections {
1864 selection.end = selection.end.bias_right(&snapshot);
1865 }
1866 drop(snapshot);
1867
1868 self.set_selections(selections.into(), None, cx);
1869 true
1870 }
1871 } else {
1872 false
1873 }
1874 }
1875
1876 fn autoclose_pairs(&mut self, cx: &mut ViewContext<Self>) {
1877 let selections = self.local_selections::<usize>(cx);
1878 let mut bracket_pair_state = None;
1879 let mut new_selections = None;
1880 self.buffer.update(cx, |buffer, cx| {
1881 let mut snapshot = buffer.snapshot(cx);
1882 let left_biased_selections = selections
1883 .iter()
1884 .map(|selection| Selection {
1885 id: selection.id,
1886 start: snapshot.anchor_before(selection.start),
1887 end: snapshot.anchor_before(selection.end),
1888 reversed: selection.reversed,
1889 goal: selection.goal,
1890 })
1891 .collect::<Vec<_>>();
1892
1893 let autoclose_pair = snapshot.language().and_then(|language| {
1894 let first_selection_start = selections.first().unwrap().start;
1895 let pair = language.brackets().iter().find(|pair| {
1896 snapshot.contains_str_at(
1897 first_selection_start.saturating_sub(pair.start.len()),
1898 &pair.start,
1899 )
1900 });
1901 pair.and_then(|pair| {
1902 let should_autoclose = selections.iter().all(|selection| {
1903 // Ensure all selections are parked at the end of a pair start.
1904 if snapshot.contains_str_at(
1905 selection.start.saturating_sub(pair.start.len()),
1906 &pair.start,
1907 ) {
1908 // Autoclose only if the next character is a whitespace or a pair end
1909 // (possibly a different one from the pair we are inserting).
1910 snapshot
1911 .chars_at(selection.start)
1912 .next()
1913 .map_or(true, |ch| ch.is_whitespace())
1914 || language.brackets().iter().any(|pair| {
1915 snapshot.contains_str_at(selection.start, &pair.end)
1916 })
1917 } else {
1918 false
1919 }
1920 });
1921
1922 if should_autoclose {
1923 Some(pair.clone())
1924 } else {
1925 None
1926 }
1927 })
1928 });
1929
1930 if let Some(pair) = autoclose_pair {
1931 let selection_ranges = selections
1932 .iter()
1933 .map(|selection| {
1934 let start = selection.start.to_offset(&snapshot);
1935 start..start
1936 })
1937 .collect::<SmallVec<[_; 32]>>();
1938
1939 buffer.edit(selection_ranges, &pair.end, cx);
1940 snapshot = buffer.snapshot(cx);
1941
1942 new_selections = Some(
1943 self.resolve_selections::<usize, _>(left_biased_selections.iter(), &snapshot)
1944 .collect::<Vec<_>>(),
1945 );
1946
1947 if pair.end.len() == 1 {
1948 let mut delta = 0;
1949 bracket_pair_state = Some(BracketPairState {
1950 ranges: selections
1951 .iter()
1952 .map(move |selection| {
1953 let offset = selection.start + delta;
1954 delta += 1;
1955 snapshot.anchor_before(offset)..snapshot.anchor_after(offset)
1956 })
1957 .collect(),
1958 pair,
1959 });
1960 }
1961 }
1962 });
1963
1964 if let Some(new_selections) = new_selections {
1965 self.update_selections(new_selections, None, cx);
1966 }
1967 if let Some(bracket_pair_state) = bracket_pair_state {
1968 self.autoclose_stack.push(bracket_pair_state);
1969 }
1970 }
1971
1972 fn skip_autoclose_end(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
1973 let old_selections = self.local_selections::<usize>(cx);
1974 let autoclose_pair = if let Some(autoclose_pair) = self.autoclose_stack.last() {
1975 autoclose_pair
1976 } else {
1977 return false;
1978 };
1979 if text != autoclose_pair.pair.end {
1980 return false;
1981 }
1982
1983 debug_assert_eq!(old_selections.len(), autoclose_pair.ranges.len());
1984
1985 let buffer = self.buffer.read(cx).snapshot(cx);
1986 if old_selections
1987 .iter()
1988 .zip(autoclose_pair.ranges.iter().map(|r| r.to_offset(&buffer)))
1989 .all(|(selection, autoclose_range)| {
1990 let autoclose_range_end = autoclose_range.end.to_offset(&buffer);
1991 selection.is_empty() && selection.start == autoclose_range_end
1992 })
1993 {
1994 let new_selections = old_selections
1995 .into_iter()
1996 .map(|selection| {
1997 let cursor = selection.start + 1;
1998 Selection {
1999 id: selection.id,
2000 start: cursor,
2001 end: cursor,
2002 reversed: false,
2003 goal: SelectionGoal::None,
2004 }
2005 })
2006 .collect();
2007 self.autoclose_stack.pop();
2008 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2009 true
2010 } else {
2011 false
2012 }
2013 }
2014
2015 fn completion_query(buffer: &MultiBufferSnapshot, position: impl ToOffset) -> Option<String> {
2016 let offset = position.to_offset(buffer);
2017 let (word_range, kind) = buffer.surrounding_word(offset);
2018 if offset > word_range.start && kind == Some(CharKind::Word) {
2019 Some(
2020 buffer
2021 .text_for_range(word_range.start..offset)
2022 .collect::<String>(),
2023 )
2024 } else {
2025 None
2026 }
2027 }
2028
2029 fn show_completions(&mut self, _: &ShowCompletions, cx: &mut ViewContext<Self>) {
2030 if self.pending_rename.is_some() {
2031 return;
2032 }
2033
2034 let project = if let Some(project) = self.project.clone() {
2035 project
2036 } else {
2037 return;
2038 };
2039
2040 let position = self.newest_anchor_selection().head();
2041 let (buffer, buffer_position) = if let Some(output) = self
2042 .buffer
2043 .read(cx)
2044 .text_anchor_for_position(position.clone(), cx)
2045 {
2046 output
2047 } else {
2048 return;
2049 };
2050
2051 let query = Self::completion_query(&self.buffer.read(cx).read(cx), position.clone());
2052 let completions = project.update(cx, |project, cx| {
2053 project.completions(&buffer, buffer_position.clone(), cx)
2054 });
2055
2056 let id = post_inc(&mut self.next_completion_id);
2057 let task = cx.spawn_weak(|this, mut cx| {
2058 async move {
2059 let completions = completions.await?;
2060 if completions.is_empty() {
2061 return Ok(());
2062 }
2063
2064 let mut menu = CompletionsMenu {
2065 id,
2066 initial_position: position,
2067 match_candidates: completions
2068 .iter()
2069 .enumerate()
2070 .map(|(id, completion)| {
2071 StringMatchCandidate::new(
2072 id,
2073 completion.label.text[completion.label.filter_range.clone()].into(),
2074 )
2075 })
2076 .collect(),
2077 buffer,
2078 completions: completions.into(),
2079 matches: Vec::new().into(),
2080 selected_item: 0,
2081 list: Default::default(),
2082 };
2083
2084 menu.filter(query.as_deref(), cx.background()).await;
2085
2086 if let Some(this) = this.upgrade(&cx) {
2087 this.update(&mut cx, |this, cx| {
2088 match this.context_menu.as_ref() {
2089 None => {}
2090 Some(ContextMenu::Completions(prev_menu)) => {
2091 if prev_menu.id > menu.id {
2092 return;
2093 }
2094 }
2095 _ => return,
2096 }
2097
2098 this.completion_tasks.retain(|(id, _)| *id > menu.id);
2099 if this.focused {
2100 this.show_context_menu(ContextMenu::Completions(menu), cx);
2101 }
2102
2103 cx.notify();
2104 });
2105 }
2106 Ok::<_, anyhow::Error>(())
2107 }
2108 .log_err()
2109 });
2110 self.completion_tasks.push((id, task));
2111 }
2112
2113 pub fn confirm_completion(
2114 &mut self,
2115 ConfirmCompletion(completion_ix): &ConfirmCompletion,
2116 cx: &mut ViewContext<Self>,
2117 ) -> Option<Task<Result<()>>> {
2118 use language::ToOffset as _;
2119
2120 let completions_menu = if let ContextMenu::Completions(menu) = self.hide_context_menu(cx)? {
2121 menu
2122 } else {
2123 return None;
2124 };
2125
2126 let mat = completions_menu
2127 .matches
2128 .get(completion_ix.unwrap_or(completions_menu.selected_item))?;
2129 let buffer_handle = completions_menu.buffer;
2130 let completion = completions_menu.completions.get(mat.candidate_id)?;
2131
2132 let snippet;
2133 let text;
2134 if completion.is_snippet() {
2135 snippet = Some(Snippet::parse(&completion.new_text).log_err()?);
2136 text = snippet.as_ref().unwrap().text.clone();
2137 } else {
2138 snippet = None;
2139 text = completion.new_text.clone();
2140 };
2141 let buffer = buffer_handle.read(cx);
2142 let old_range = completion.old_range.to_offset(&buffer);
2143 let old_text = buffer.text_for_range(old_range.clone()).collect::<String>();
2144
2145 let selections = self.local_selections::<usize>(cx);
2146 let newest_selection = self.newest_anchor_selection();
2147 if newest_selection.start.buffer_id != Some(buffer_handle.id()) {
2148 return None;
2149 }
2150
2151 let lookbehind = newest_selection
2152 .start
2153 .text_anchor
2154 .to_offset(buffer)
2155 .saturating_sub(old_range.start);
2156 let lookahead = old_range
2157 .end
2158 .saturating_sub(newest_selection.end.text_anchor.to_offset(buffer));
2159 let mut common_prefix_len = old_text
2160 .bytes()
2161 .zip(text.bytes())
2162 .take_while(|(a, b)| a == b)
2163 .count();
2164
2165 let snapshot = self.buffer.read(cx).snapshot(cx);
2166 let mut ranges = Vec::new();
2167 for selection in &selections {
2168 if snapshot.contains_str_at(selection.start.saturating_sub(lookbehind), &old_text) {
2169 let start = selection.start.saturating_sub(lookbehind);
2170 let end = selection.end + lookahead;
2171 ranges.push(start + common_prefix_len..end);
2172 } else {
2173 common_prefix_len = 0;
2174 ranges.clear();
2175 ranges.extend(selections.iter().map(|s| {
2176 if s.id == newest_selection.id {
2177 old_range.clone()
2178 } else {
2179 s.start..s.end
2180 }
2181 }));
2182 break;
2183 }
2184 }
2185 let text = &text[common_prefix_len..];
2186
2187 self.start_transaction(cx);
2188 if let Some(mut snippet) = snippet {
2189 snippet.text = text.to_string();
2190 for tabstop in snippet.tabstops.iter_mut().flatten() {
2191 tabstop.start -= common_prefix_len as isize;
2192 tabstop.end -= common_prefix_len as isize;
2193 }
2194
2195 self.insert_snippet(&ranges, snippet, cx).log_err();
2196 } else {
2197 self.buffer.update(cx, |buffer, cx| {
2198 buffer.edit_with_autoindent(ranges, text, cx);
2199 });
2200 }
2201 self.end_transaction(cx);
2202
2203 let project = self.project.clone()?;
2204 let apply_edits = project.update(cx, |project, cx| {
2205 project.apply_additional_edits_for_completion(
2206 buffer_handle,
2207 completion.clone(),
2208 true,
2209 cx,
2210 )
2211 });
2212 Some(cx.foreground().spawn(async move {
2213 apply_edits.await?;
2214 Ok(())
2215 }))
2216 }
2217
2218 pub fn toggle_code_actions(
2219 &mut self,
2220 &ToggleCodeActions(deployed_from_indicator): &ToggleCodeActions,
2221 cx: &mut ViewContext<Self>,
2222 ) {
2223 if matches!(
2224 self.context_menu.as_ref(),
2225 Some(ContextMenu::CodeActions(_))
2226 ) {
2227 self.context_menu.take();
2228 cx.notify();
2229 return;
2230 }
2231
2232 let mut task = self.code_actions_task.take();
2233 cx.spawn_weak(|this, mut cx| async move {
2234 while let Some(prev_task) = task {
2235 prev_task.await;
2236 task = this
2237 .upgrade(&cx)
2238 .and_then(|this| this.update(&mut cx, |this, _| this.code_actions_task.take()));
2239 }
2240
2241 if let Some(this) = this.upgrade(&cx) {
2242 this.update(&mut cx, |this, cx| {
2243 if this.focused {
2244 if let Some((buffer, actions)) = this.available_code_actions.clone() {
2245 this.show_context_menu(
2246 ContextMenu::CodeActions(CodeActionsMenu {
2247 buffer,
2248 actions,
2249 selected_item: Default::default(),
2250 list: Default::default(),
2251 deployed_from_indicator,
2252 }),
2253 cx,
2254 );
2255 }
2256 }
2257 })
2258 }
2259 Ok::<_, anyhow::Error>(())
2260 })
2261 .detach_and_log_err(cx);
2262 }
2263
2264 pub fn confirm_code_action(
2265 workspace: &mut Workspace,
2266 ConfirmCodeAction(action_ix): &ConfirmCodeAction,
2267 cx: &mut ViewContext<Workspace>,
2268 ) -> Option<Task<Result<()>>> {
2269 let editor = workspace.active_item(cx)?.act_as::<Editor>(cx)?;
2270 let actions_menu = if let ContextMenu::CodeActions(menu) =
2271 editor.update(cx, |editor, cx| editor.hide_context_menu(cx))?
2272 {
2273 menu
2274 } else {
2275 return None;
2276 };
2277 let action_ix = action_ix.unwrap_or(actions_menu.selected_item);
2278 let action = actions_menu.actions.get(action_ix)?.clone();
2279 let title = action.lsp_action.title.clone();
2280 let buffer = actions_menu.buffer;
2281
2282 let apply_code_actions = workspace.project().clone().update(cx, |project, cx| {
2283 project.apply_code_action(buffer, action, true, cx)
2284 });
2285 Some(cx.spawn(|workspace, cx| async move {
2286 let project_transaction = apply_code_actions.await?;
2287 Self::open_project_transaction(editor, workspace, project_transaction, title, cx).await
2288 }))
2289 }
2290
2291 async fn open_project_transaction(
2292 this: ViewHandle<Editor>,
2293 workspace: ViewHandle<Workspace>,
2294 transaction: ProjectTransaction,
2295 title: String,
2296 mut cx: AsyncAppContext,
2297 ) -> Result<()> {
2298 let replica_id = this.read_with(&cx, |this, cx| this.replica_id(cx));
2299
2300 // If the code action's edits are all contained within this editor, then
2301 // avoid opening a new editor to display them.
2302 let mut entries = transaction.0.iter();
2303 if let Some((buffer, transaction)) = entries.next() {
2304 if entries.next().is_none() {
2305 let excerpt = this.read_with(&cx, |editor, cx| {
2306 editor
2307 .buffer()
2308 .read(cx)
2309 .excerpt_containing(editor.newest_anchor_selection().head(), cx)
2310 });
2311 if let Some((excerpted_buffer, excerpt_range)) = excerpt {
2312 if excerpted_buffer == *buffer {
2313 let snapshot = buffer.read_with(&cx, |buffer, _| buffer.snapshot());
2314 let excerpt_range = excerpt_range.to_offset(&snapshot);
2315 if snapshot
2316 .edited_ranges_for_transaction(transaction)
2317 .all(|range| {
2318 excerpt_range.start <= range.start && excerpt_range.end >= range.end
2319 })
2320 {
2321 return Ok(());
2322 }
2323 }
2324 }
2325 }
2326 }
2327
2328 let mut ranges_to_highlight = Vec::new();
2329 let excerpt_buffer = cx.add_model(|cx| {
2330 let mut multibuffer = MultiBuffer::new(replica_id).with_title(title);
2331 for (buffer, transaction) in &transaction.0 {
2332 let snapshot = buffer.read(cx).snapshot();
2333 ranges_to_highlight.extend(
2334 multibuffer.push_excerpts_with_context_lines(
2335 buffer.clone(),
2336 snapshot
2337 .edited_ranges_for_transaction::<usize>(transaction)
2338 .collect(),
2339 1,
2340 cx,
2341 ),
2342 );
2343 }
2344 multibuffer.push_transaction(&transaction.0);
2345 multibuffer
2346 });
2347
2348 workspace.update(&mut cx, |workspace, cx| {
2349 let editor = workspace.open_item(MultiBufferItemHandle(excerpt_buffer), cx);
2350 if let Some(editor) = editor.act_as::<Self>(cx) {
2351 editor.update(cx, |editor, cx| {
2352 let color = editor.style(cx).highlighted_line_background;
2353 editor.highlight_ranges::<Self>(ranges_to_highlight, color, cx);
2354 });
2355 }
2356 });
2357
2358 Ok(())
2359 }
2360
2361 fn refresh_code_actions(&mut self, cx: &mut ViewContext<Self>) -> Option<()> {
2362 let project = self.project.as_ref()?;
2363 let buffer = self.buffer.read(cx);
2364 let newest_selection = self.newest_anchor_selection().clone();
2365 let (start_buffer, start) = buffer.text_anchor_for_position(newest_selection.start, cx)?;
2366 let (end_buffer, end) = buffer.text_anchor_for_position(newest_selection.end, cx)?;
2367 if start_buffer != end_buffer {
2368 return None;
2369 }
2370
2371 let actions = project.update(cx, |project, cx| {
2372 project.code_actions(&start_buffer, start..end, cx)
2373 });
2374 self.code_actions_task = Some(cx.spawn_weak(|this, mut cx| async move {
2375 let actions = actions.await;
2376 if let Some(this) = this.upgrade(&cx) {
2377 this.update(&mut cx, |this, cx| {
2378 this.available_code_actions = actions.log_err().and_then(|actions| {
2379 if actions.is_empty() {
2380 None
2381 } else {
2382 Some((start_buffer, actions.into()))
2383 }
2384 });
2385 cx.notify();
2386 })
2387 }
2388 }));
2389 None
2390 }
2391
2392 fn refresh_document_highlights(&mut self, cx: &mut ViewContext<Self>) -> Option<()> {
2393 let project = self.project.as_ref()?;
2394 let buffer = self.buffer.read(cx);
2395 let newest_selection = self.newest_anchor_selection().clone();
2396 let cursor_position = newest_selection.head();
2397 let (cursor_buffer, cursor_buffer_position) =
2398 buffer.text_anchor_for_position(cursor_position.clone(), cx)?;
2399 let (tail_buffer, _) = buffer.text_anchor_for_position(newest_selection.tail(), cx)?;
2400 if cursor_buffer != tail_buffer {
2401 return None;
2402 }
2403
2404 let highlights = project.update(cx, |project, cx| {
2405 project.document_highlights(&cursor_buffer, cursor_buffer_position, cx)
2406 });
2407
2408 enum DocumentHighlightRead {}
2409 enum DocumentHighlightWrite {}
2410
2411 self.document_highlights_task = Some(cx.spawn_weak(|this, mut cx| async move {
2412 let highlights = highlights.log_err().await;
2413 if let Some((this, highlights)) = this.upgrade(&cx).zip(highlights) {
2414 this.update(&mut cx, |this, cx| {
2415 let buffer_id = cursor_position.buffer_id;
2416 let excerpt_id = cursor_position.excerpt_id.clone();
2417 let style = this.style(cx);
2418 let read_background = style.document_highlight_read_background;
2419 let write_background = style.document_highlight_write_background;
2420 let buffer = this.buffer.read(cx);
2421 if !buffer
2422 .text_anchor_for_position(cursor_position, cx)
2423 .map_or(false, |(buffer, _)| buffer == cursor_buffer)
2424 {
2425 return;
2426 }
2427
2428 let mut write_ranges = Vec::new();
2429 let mut read_ranges = Vec::new();
2430 for highlight in highlights {
2431 let range = Anchor {
2432 buffer_id,
2433 excerpt_id: excerpt_id.clone(),
2434 text_anchor: highlight.range.start,
2435 }..Anchor {
2436 buffer_id,
2437 excerpt_id: excerpt_id.clone(),
2438 text_anchor: highlight.range.end,
2439 };
2440 if highlight.kind == lsp::DocumentHighlightKind::WRITE {
2441 write_ranges.push(range);
2442 } else {
2443 read_ranges.push(range);
2444 }
2445 }
2446
2447 this.highlight_ranges::<DocumentHighlightRead>(
2448 read_ranges,
2449 read_background,
2450 cx,
2451 );
2452 this.highlight_ranges::<DocumentHighlightWrite>(
2453 write_ranges,
2454 write_background,
2455 cx,
2456 );
2457 cx.notify();
2458 });
2459 }
2460 }));
2461 None
2462 }
2463
2464 pub fn render_code_actions_indicator(
2465 &self,
2466 style: &EditorStyle,
2467 cx: &mut ViewContext<Self>,
2468 ) -> Option<ElementBox> {
2469 if self.available_code_actions.is_some() {
2470 enum Tag {}
2471 Some(
2472 MouseEventHandler::new::<Tag, _, _>(0, cx, |_, _| {
2473 Svg::new("icons/zap.svg")
2474 .with_color(style.code_actions_indicator)
2475 .boxed()
2476 })
2477 .with_cursor_style(CursorStyle::PointingHand)
2478 .with_padding(Padding::uniform(3.))
2479 .on_mouse_down(|cx| {
2480 cx.dispatch_action(ToggleCodeActions(true));
2481 })
2482 .boxed(),
2483 )
2484 } else {
2485 None
2486 }
2487 }
2488
2489 pub fn context_menu_visible(&self) -> bool {
2490 self.context_menu
2491 .as_ref()
2492 .map_or(false, |menu| menu.visible())
2493 }
2494
2495 pub fn render_context_menu(
2496 &self,
2497 cursor_position: DisplayPoint,
2498 style: EditorStyle,
2499 cx: &AppContext,
2500 ) -> Option<(DisplayPoint, ElementBox)> {
2501 self.context_menu
2502 .as_ref()
2503 .map(|menu| menu.render(cursor_position, style, cx))
2504 }
2505
2506 fn show_context_menu(&mut self, menu: ContextMenu, cx: &mut ViewContext<Self>) {
2507 if !matches!(menu, ContextMenu::Completions(_)) {
2508 self.completion_tasks.clear();
2509 }
2510 self.context_menu = Some(menu);
2511 cx.notify();
2512 }
2513
2514 fn hide_context_menu(&mut self, cx: &mut ViewContext<Self>) -> Option<ContextMenu> {
2515 cx.notify();
2516 self.completion_tasks.clear();
2517 self.context_menu.take()
2518 }
2519
2520 pub fn insert_snippet(
2521 &mut self,
2522 insertion_ranges: &[Range<usize>],
2523 snippet: Snippet,
2524 cx: &mut ViewContext<Self>,
2525 ) -> Result<()> {
2526 let tabstops = self.buffer.update(cx, |buffer, cx| {
2527 buffer.edit_with_autoindent(insertion_ranges.iter().cloned(), &snippet.text, cx);
2528
2529 let snapshot = &*buffer.read(cx);
2530 let snippet = &snippet;
2531 snippet
2532 .tabstops
2533 .iter()
2534 .map(|tabstop| {
2535 let mut tabstop_ranges = tabstop
2536 .iter()
2537 .flat_map(|tabstop_range| {
2538 let mut delta = 0 as isize;
2539 insertion_ranges.iter().map(move |insertion_range| {
2540 let insertion_start = insertion_range.start as isize + delta;
2541 delta +=
2542 snippet.text.len() as isize - insertion_range.len() as isize;
2543
2544 let start = snapshot.anchor_before(
2545 (insertion_start + tabstop_range.start) as usize,
2546 );
2547 let end = snapshot
2548 .anchor_after((insertion_start + tabstop_range.end) as usize);
2549 start..end
2550 })
2551 })
2552 .collect::<Vec<_>>();
2553 tabstop_ranges
2554 .sort_unstable_by(|a, b| a.start.cmp(&b.start, snapshot).unwrap());
2555 tabstop_ranges
2556 })
2557 .collect::<Vec<_>>()
2558 });
2559
2560 if let Some(tabstop) = tabstops.first() {
2561 self.select_ranges(tabstop.iter().cloned(), Some(Autoscroll::Fit), cx);
2562 self.snippet_stack.push(SnippetState {
2563 active_index: 0,
2564 ranges: tabstops,
2565 });
2566 }
2567
2568 Ok(())
2569 }
2570
2571 pub fn move_to_next_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) -> bool {
2572 self.move_to_snippet_tabstop(Bias::Right, cx)
2573 }
2574
2575 pub fn move_to_prev_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) {
2576 self.move_to_snippet_tabstop(Bias::Left, cx);
2577 }
2578
2579 pub fn move_to_snippet_tabstop(&mut self, bias: Bias, cx: &mut ViewContext<Self>) -> bool {
2580 let buffer = self.buffer.read(cx).snapshot(cx);
2581
2582 if let Some(snippet) = self.snippet_stack.last_mut() {
2583 match bias {
2584 Bias::Left => {
2585 if snippet.active_index > 0 {
2586 snippet.active_index -= 1;
2587 } else {
2588 return false;
2589 }
2590 }
2591 Bias::Right => {
2592 if snippet.active_index + 1 < snippet.ranges.len() {
2593 snippet.active_index += 1;
2594 } else {
2595 return false;
2596 }
2597 }
2598 }
2599 if let Some(current_ranges) = snippet.ranges.get(snippet.active_index) {
2600 let new_selections = current_ranges
2601 .iter()
2602 .map(|new_range| {
2603 let new_range = new_range.to_offset(&buffer);
2604 Selection {
2605 id: post_inc(&mut self.next_selection_id),
2606 start: new_range.start,
2607 end: new_range.end,
2608 reversed: false,
2609 goal: SelectionGoal::None,
2610 }
2611 })
2612 .collect();
2613
2614 // Remove the snippet state when moving to the last tabstop.
2615 if snippet.active_index + 1 == snippet.ranges.len() {
2616 self.snippet_stack.pop();
2617 }
2618
2619 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2620 return true;
2621 }
2622 self.snippet_stack.pop();
2623 }
2624
2625 false
2626 }
2627
2628 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
2629 self.start_transaction(cx);
2630 self.select_all(&SelectAll, cx);
2631 self.insert("", cx);
2632 self.end_transaction(cx);
2633 }
2634
2635 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
2636 self.start_transaction(cx);
2637 let mut selections = self.local_selections::<Point>(cx);
2638 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2639 for selection in &mut selections {
2640 if selection.is_empty() {
2641 let head = selection.head().to_display_point(&display_map);
2642 let cursor = movement::left(&display_map, head)
2643 .unwrap()
2644 .to_point(&display_map);
2645 selection.set_head(cursor);
2646 selection.goal = SelectionGoal::None;
2647 }
2648 }
2649 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2650 self.insert("", cx);
2651 self.end_transaction(cx);
2652 }
2653
2654 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
2655 self.start_transaction(cx);
2656 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2657 let mut selections = self.local_selections::<Point>(cx);
2658 for selection in &mut selections {
2659 if selection.is_empty() {
2660 let head = selection.head().to_display_point(&display_map);
2661 let cursor = movement::right(&display_map, head)
2662 .unwrap()
2663 .to_point(&display_map);
2664 selection.set_head(cursor);
2665 selection.goal = SelectionGoal::None;
2666 }
2667 }
2668 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2669 self.insert(&"", cx);
2670 self.end_transaction(cx);
2671 }
2672
2673 pub fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
2674 if self.move_to_next_snippet_tabstop(cx) {
2675 return;
2676 }
2677
2678 self.start_transaction(cx);
2679 let tab_size = self.settings.borrow().tab_size;
2680 let mut selections = self.local_selections::<Point>(cx);
2681 let mut last_indent = None;
2682 self.buffer.update(cx, |buffer, cx| {
2683 for selection in &mut selections {
2684 if selection.is_empty() {
2685 let char_column = buffer
2686 .read(cx)
2687 .text_for_range(Point::new(selection.start.row, 0)..selection.start)
2688 .flat_map(str::chars)
2689 .count();
2690 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
2691 buffer.edit(
2692 [selection.start..selection.start],
2693 " ".repeat(chars_to_next_tab_stop),
2694 cx,
2695 );
2696 selection.start.column += chars_to_next_tab_stop as u32;
2697 selection.end = selection.start;
2698 } else {
2699 let mut start_row = selection.start.row;
2700 let mut end_row = selection.end.row + 1;
2701
2702 // If a selection ends at the beginning of a line, don't indent
2703 // that last line.
2704 if selection.end.column == 0 {
2705 end_row -= 1;
2706 }
2707
2708 // Avoid re-indenting a row that has already been indented by a
2709 // previous selection, but still update this selection's column
2710 // to reflect that indentation.
2711 if let Some((last_indent_row, last_indent_len)) = last_indent {
2712 if last_indent_row == selection.start.row {
2713 selection.start.column += last_indent_len;
2714 start_row += 1;
2715 }
2716 if last_indent_row == selection.end.row {
2717 selection.end.column += last_indent_len;
2718 }
2719 }
2720
2721 for row in start_row..end_row {
2722 let indent_column = buffer.read(cx).indent_column_for_line(row) as usize;
2723 let columns_to_next_tab_stop = tab_size - (indent_column % tab_size);
2724 let row_start = Point::new(row, 0);
2725 buffer.edit(
2726 [row_start..row_start],
2727 " ".repeat(columns_to_next_tab_stop),
2728 cx,
2729 );
2730
2731 // Update this selection's endpoints to reflect the indentation.
2732 if row == selection.start.row {
2733 selection.start.column += columns_to_next_tab_stop as u32;
2734 }
2735 if row == selection.end.row {
2736 selection.end.column += columns_to_next_tab_stop as u32;
2737 }
2738
2739 last_indent = Some((row, columns_to_next_tab_stop as u32));
2740 }
2741 }
2742 }
2743 });
2744
2745 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2746 self.end_transaction(cx);
2747 }
2748
2749 pub fn outdent(&mut self, _: &Outdent, cx: &mut ViewContext<Self>) {
2750 if !self.snippet_stack.is_empty() {
2751 self.move_to_prev_snippet_tabstop(cx);
2752 return;
2753 }
2754
2755 self.start_transaction(cx);
2756 let tab_size = self.settings.borrow().tab_size;
2757 let selections = self.local_selections::<Point>(cx);
2758 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2759 let mut deletion_ranges = Vec::new();
2760 let mut last_outdent = None;
2761 {
2762 let buffer = self.buffer.read(cx).read(cx);
2763 for selection in &selections {
2764 let mut rows = selection.spanned_rows(false, &display_map);
2765
2766 // Avoid re-outdenting a row that has already been outdented by a
2767 // previous selection.
2768 if let Some(last_row) = last_outdent {
2769 if last_row == rows.start {
2770 rows.start += 1;
2771 }
2772 }
2773
2774 for row in rows {
2775 let column = buffer.indent_column_for_line(row) as usize;
2776 if column > 0 {
2777 let mut deletion_len = (column % tab_size) as u32;
2778 if deletion_len == 0 {
2779 deletion_len = tab_size as u32;
2780 }
2781 deletion_ranges.push(Point::new(row, 0)..Point::new(row, deletion_len));
2782 last_outdent = Some(row);
2783 }
2784 }
2785 }
2786 }
2787 self.buffer.update(cx, |buffer, cx| {
2788 buffer.edit(deletion_ranges, "", cx);
2789 });
2790
2791 self.update_selections(
2792 self.local_selections::<usize>(cx),
2793 Some(Autoscroll::Fit),
2794 cx,
2795 );
2796 self.end_transaction(cx);
2797 }
2798
2799 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
2800 self.start_transaction(cx);
2801
2802 let selections = self.local_selections::<Point>(cx);
2803 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2804 let buffer = self.buffer.read(cx).snapshot(cx);
2805
2806 let mut new_cursors = Vec::new();
2807 let mut edit_ranges = Vec::new();
2808 let mut selections = selections.iter().peekable();
2809 while let Some(selection) = selections.next() {
2810 let mut rows = selection.spanned_rows(false, &display_map);
2811 let goal_display_column = selection.head().to_display_point(&display_map).column();
2812
2813 // Accumulate contiguous regions of rows that we want to delete.
2814 while let Some(next_selection) = selections.peek() {
2815 let next_rows = next_selection.spanned_rows(false, &display_map);
2816 if next_rows.start <= rows.end {
2817 rows.end = next_rows.end;
2818 selections.next().unwrap();
2819 } else {
2820 break;
2821 }
2822 }
2823
2824 let mut edit_start = Point::new(rows.start, 0).to_offset(&buffer);
2825 let edit_end;
2826 let cursor_buffer_row;
2827 if buffer.max_point().row >= rows.end {
2828 // If there's a line after the range, delete the \n from the end of the row range
2829 // and position the cursor on the next line.
2830 edit_end = Point::new(rows.end, 0).to_offset(&buffer);
2831 cursor_buffer_row = rows.end;
2832 } else {
2833 // If there isn't a line after the range, delete the \n from the line before the
2834 // start of the row range and position the cursor there.
2835 edit_start = edit_start.saturating_sub(1);
2836 edit_end = buffer.len();
2837 cursor_buffer_row = rows.start.saturating_sub(1);
2838 }
2839
2840 let mut cursor = Point::new(cursor_buffer_row, 0).to_display_point(&display_map);
2841 *cursor.column_mut() =
2842 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
2843
2844 new_cursors.push((
2845 selection.id,
2846 buffer.anchor_after(cursor.to_point(&display_map)),
2847 ));
2848 edit_ranges.push(edit_start..edit_end);
2849 }
2850
2851 let buffer = self.buffer.update(cx, |buffer, cx| {
2852 buffer.edit(edit_ranges, "", cx);
2853 buffer.snapshot(cx)
2854 });
2855 let new_selections = new_cursors
2856 .into_iter()
2857 .map(|(id, cursor)| {
2858 let cursor = cursor.to_point(&buffer);
2859 Selection {
2860 id,
2861 start: cursor,
2862 end: cursor,
2863 reversed: false,
2864 goal: SelectionGoal::None,
2865 }
2866 })
2867 .collect();
2868 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2869 self.end_transaction(cx);
2870 }
2871
2872 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
2873 self.start_transaction(cx);
2874
2875 let selections = self.local_selections::<Point>(cx);
2876 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2877 let buffer = &display_map.buffer_snapshot;
2878
2879 let mut edits = Vec::new();
2880 let mut selections_iter = selections.iter().peekable();
2881 while let Some(selection) = selections_iter.next() {
2882 // Avoid duplicating the same lines twice.
2883 let mut rows = selection.spanned_rows(false, &display_map);
2884
2885 while let Some(next_selection) = selections_iter.peek() {
2886 let next_rows = next_selection.spanned_rows(false, &display_map);
2887 if next_rows.start <= rows.end - 1 {
2888 rows.end = next_rows.end;
2889 selections_iter.next().unwrap();
2890 } else {
2891 break;
2892 }
2893 }
2894
2895 // Copy the text from the selected row region and splice it at the start of the region.
2896 let start = Point::new(rows.start, 0);
2897 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
2898 let text = buffer
2899 .text_for_range(start..end)
2900 .chain(Some("\n"))
2901 .collect::<String>();
2902 edits.push((start, text, rows.len() as u32));
2903 }
2904
2905 self.buffer.update(cx, |buffer, cx| {
2906 for (point, text, _) in edits.into_iter().rev() {
2907 buffer.edit(Some(point..point), text, cx);
2908 }
2909 });
2910
2911 self.request_autoscroll(Autoscroll::Fit, cx);
2912 self.end_transaction(cx);
2913 }
2914
2915 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
2916 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2917 let buffer = self.buffer.read(cx).snapshot(cx);
2918
2919 let mut edits = Vec::new();
2920 let mut unfold_ranges = Vec::new();
2921 let mut refold_ranges = Vec::new();
2922
2923 let selections = self.local_selections::<Point>(cx);
2924 let mut selections = selections.iter().peekable();
2925 let mut contiguous_row_selections = Vec::new();
2926 let mut new_selections = Vec::new();
2927
2928 while let Some(selection) = selections.next() {
2929 // Find all the selections that span a contiguous row range
2930 contiguous_row_selections.push(selection.clone());
2931 let start_row = selection.start.row;
2932 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
2933 display_map.next_line_boundary(selection.end).0.row + 1
2934 } else {
2935 selection.end.row
2936 };
2937
2938 while let Some(next_selection) = selections.peek() {
2939 if next_selection.start.row <= end_row {
2940 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
2941 display_map.next_line_boundary(next_selection.end).0.row + 1
2942 } else {
2943 next_selection.end.row
2944 };
2945 contiguous_row_selections.push(selections.next().unwrap().clone());
2946 } else {
2947 break;
2948 }
2949 }
2950
2951 // Move the text spanned by the row range to be before the line preceding the row range
2952 if start_row > 0 {
2953 let range_to_move = Point::new(start_row - 1, buffer.line_len(start_row - 1))
2954 ..Point::new(end_row - 1, buffer.line_len(end_row - 1));
2955 let insertion_point = display_map
2956 .prev_line_boundary(Point::new(start_row - 1, 0))
2957 .0;
2958
2959 // Don't move lines across excerpts
2960 if buffer
2961 .excerpt_boundaries_in_range((
2962 Bound::Excluded(insertion_point),
2963 Bound::Included(range_to_move.end),
2964 ))
2965 .next()
2966 .is_none()
2967 {
2968 let text = buffer
2969 .text_for_range(range_to_move.clone())
2970 .flat_map(|s| s.chars())
2971 .skip(1)
2972 .chain(['\n'])
2973 .collect::<String>();
2974
2975 edits.push((
2976 buffer.anchor_after(range_to_move.start)
2977 ..buffer.anchor_before(range_to_move.end),
2978 String::new(),
2979 ));
2980 let insertion_anchor = buffer.anchor_after(insertion_point);
2981 edits.push((insertion_anchor.clone()..insertion_anchor, text));
2982
2983 let row_delta = range_to_move.start.row - insertion_point.row + 1;
2984
2985 // Move selections up
2986 new_selections.extend(contiguous_row_selections.drain(..).map(
2987 |mut selection| {
2988 selection.start.row -= row_delta;
2989 selection.end.row -= row_delta;
2990 selection
2991 },
2992 ));
2993
2994 // Move folds up
2995 unfold_ranges.push(range_to_move.clone());
2996 for fold in display_map.folds_in_range(
2997 buffer.anchor_before(range_to_move.start)
2998 ..buffer.anchor_after(range_to_move.end),
2999 ) {
3000 let mut start = fold.start.to_point(&buffer);
3001 let mut end = fold.end.to_point(&buffer);
3002 start.row -= row_delta;
3003 end.row -= row_delta;
3004 refold_ranges.push(start..end);
3005 }
3006 }
3007 }
3008
3009 // If we didn't move line(s), preserve the existing selections
3010 new_selections.extend(contiguous_row_selections.drain(..));
3011 }
3012
3013 self.start_transaction(cx);
3014 self.unfold_ranges(unfold_ranges, cx);
3015 self.buffer.update(cx, |buffer, cx| {
3016 for (range, text) in edits {
3017 buffer.edit([range], text, cx);
3018 }
3019 });
3020 self.fold_ranges(refold_ranges, cx);
3021 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3022 self.end_transaction(cx);
3023 }
3024
3025 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
3026 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3027 let buffer = self.buffer.read(cx).snapshot(cx);
3028
3029 let mut edits = Vec::new();
3030 let mut unfold_ranges = Vec::new();
3031 let mut refold_ranges = Vec::new();
3032
3033 let selections = self.local_selections::<Point>(cx);
3034 let mut selections = selections.iter().peekable();
3035 let mut contiguous_row_selections = Vec::new();
3036 let mut new_selections = Vec::new();
3037
3038 while let Some(selection) = selections.next() {
3039 // Find all the selections that span a contiguous row range
3040 contiguous_row_selections.push(selection.clone());
3041 let start_row = selection.start.row;
3042 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
3043 display_map.next_line_boundary(selection.end).0.row + 1
3044 } else {
3045 selection.end.row
3046 };
3047
3048 while let Some(next_selection) = selections.peek() {
3049 if next_selection.start.row <= end_row {
3050 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
3051 display_map.next_line_boundary(next_selection.end).0.row + 1
3052 } else {
3053 next_selection.end.row
3054 };
3055 contiguous_row_selections.push(selections.next().unwrap().clone());
3056 } else {
3057 break;
3058 }
3059 }
3060
3061 // Move the text spanned by the row range to be after the last line of the row range
3062 if end_row <= buffer.max_point().row {
3063 let range_to_move = Point::new(start_row, 0)..Point::new(end_row, 0);
3064 let insertion_point = display_map.next_line_boundary(Point::new(end_row, 0)).0;
3065
3066 // Don't move lines across excerpt boundaries
3067 if buffer
3068 .excerpt_boundaries_in_range((
3069 Bound::Excluded(range_to_move.start),
3070 Bound::Included(insertion_point),
3071 ))
3072 .next()
3073 .is_none()
3074 {
3075 let mut text = String::from("\n");
3076 text.extend(buffer.text_for_range(range_to_move.clone()));
3077 text.pop(); // Drop trailing newline
3078 edits.push((
3079 buffer.anchor_after(range_to_move.start)
3080 ..buffer.anchor_before(range_to_move.end),
3081 String::new(),
3082 ));
3083 let insertion_anchor = buffer.anchor_after(insertion_point);
3084 edits.push((insertion_anchor.clone()..insertion_anchor, text));
3085
3086 let row_delta = insertion_point.row - range_to_move.end.row + 1;
3087
3088 // Move selections down
3089 new_selections.extend(contiguous_row_selections.drain(..).map(
3090 |mut selection| {
3091 selection.start.row += row_delta;
3092 selection.end.row += row_delta;
3093 selection
3094 },
3095 ));
3096
3097 // Move folds down
3098 unfold_ranges.push(range_to_move.clone());
3099 for fold in display_map.folds_in_range(
3100 buffer.anchor_before(range_to_move.start)
3101 ..buffer.anchor_after(range_to_move.end),
3102 ) {
3103 let mut start = fold.start.to_point(&buffer);
3104 let mut end = fold.end.to_point(&buffer);
3105 start.row += row_delta;
3106 end.row += row_delta;
3107 refold_ranges.push(start..end);
3108 }
3109 }
3110 }
3111
3112 // If we didn't move line(s), preserve the existing selections
3113 new_selections.extend(contiguous_row_selections.drain(..));
3114 }
3115
3116 self.start_transaction(cx);
3117 self.unfold_ranges(unfold_ranges, cx);
3118 self.buffer.update(cx, |buffer, cx| {
3119 for (range, text) in edits {
3120 buffer.edit([range], text, cx);
3121 }
3122 });
3123 self.fold_ranges(refold_ranges, cx);
3124 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3125 self.end_transaction(cx);
3126 }
3127
3128 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
3129 self.start_transaction(cx);
3130 let mut text = String::new();
3131 let mut selections = self.local_selections::<Point>(cx);
3132 let mut clipboard_selections = Vec::with_capacity(selections.len());
3133 {
3134 let buffer = self.buffer.read(cx).read(cx);
3135 let max_point = buffer.max_point();
3136 for selection in &mut selections {
3137 let is_entire_line = selection.is_empty();
3138 if is_entire_line {
3139 selection.start = Point::new(selection.start.row, 0);
3140 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
3141 selection.goal = SelectionGoal::None;
3142 }
3143 let mut len = 0;
3144 for chunk in buffer.text_for_range(selection.start..selection.end) {
3145 text.push_str(chunk);
3146 len += chunk.len();
3147 }
3148 clipboard_selections.push(ClipboardSelection {
3149 len,
3150 is_entire_line,
3151 });
3152 }
3153 }
3154 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3155 self.insert("", cx);
3156 self.end_transaction(cx);
3157
3158 cx.as_mut()
3159 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
3160 }
3161
3162 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
3163 let selections = self.local_selections::<Point>(cx);
3164 let mut text = String::new();
3165 let mut clipboard_selections = Vec::with_capacity(selections.len());
3166 {
3167 let buffer = self.buffer.read(cx).read(cx);
3168 let max_point = buffer.max_point();
3169 for selection in selections.iter() {
3170 let mut start = selection.start;
3171 let mut end = selection.end;
3172 let is_entire_line = selection.is_empty();
3173 if is_entire_line {
3174 start = Point::new(start.row, 0);
3175 end = cmp::min(max_point, Point::new(start.row + 1, 0));
3176 }
3177 let mut len = 0;
3178 for chunk in buffer.text_for_range(start..end) {
3179 text.push_str(chunk);
3180 len += chunk.len();
3181 }
3182 clipboard_selections.push(ClipboardSelection {
3183 len,
3184 is_entire_line,
3185 });
3186 }
3187 }
3188
3189 cx.as_mut()
3190 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
3191 }
3192
3193 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
3194 if let Some(item) = cx.as_mut().read_from_clipboard() {
3195 let clipboard_text = item.text();
3196 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
3197 let mut selections = self.local_selections::<usize>(cx);
3198 let all_selections_were_entire_line =
3199 clipboard_selections.iter().all(|s| s.is_entire_line);
3200 if clipboard_selections.len() != selections.len() {
3201 clipboard_selections.clear();
3202 }
3203
3204 let mut delta = 0_isize;
3205 let mut start_offset = 0;
3206 for (i, selection) in selections.iter_mut().enumerate() {
3207 let to_insert;
3208 let entire_line;
3209 if let Some(clipboard_selection) = clipboard_selections.get(i) {
3210 let end_offset = start_offset + clipboard_selection.len;
3211 to_insert = &clipboard_text[start_offset..end_offset];
3212 entire_line = clipboard_selection.is_entire_line;
3213 start_offset = end_offset
3214 } else {
3215 to_insert = clipboard_text.as_str();
3216 entire_line = all_selections_were_entire_line;
3217 }
3218
3219 selection.start = (selection.start as isize + delta) as usize;
3220 selection.end = (selection.end as isize + delta) as usize;
3221
3222 self.buffer.update(cx, |buffer, cx| {
3223 // If the corresponding selection was empty when this slice of the
3224 // clipboard text was written, then the entire line containing the
3225 // selection was copied. If this selection is also currently empty,
3226 // then paste the line before the current line of the buffer.
3227 let range = if selection.is_empty() && entire_line {
3228 let column = selection.start.to_point(&buffer.read(cx)).column as usize;
3229 let line_start = selection.start - column;
3230 line_start..line_start
3231 } else {
3232 selection.start..selection.end
3233 };
3234
3235 delta += to_insert.len() as isize - range.len() as isize;
3236 buffer.edit([range], to_insert, cx);
3237 selection.start += to_insert.len();
3238 selection.end = selection.start;
3239 });
3240 }
3241 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3242 } else {
3243 self.insert(clipboard_text, cx);
3244 }
3245 }
3246 }
3247
3248 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
3249 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
3250 if let Some((selections, _)) = self.selection_history.get(&tx_id).cloned() {
3251 self.set_selections(selections, None, cx);
3252 }
3253 self.request_autoscroll(Autoscroll::Fit, cx);
3254 }
3255 }
3256
3257 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
3258 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
3259 if let Some((_, Some(selections))) = self.selection_history.get(&tx_id).cloned() {
3260 self.set_selections(selections, None, cx);
3261 }
3262 self.request_autoscroll(Autoscroll::Fit, cx);
3263 }
3264 }
3265
3266 pub fn finalize_last_transaction(&mut self, cx: &mut ViewContext<Self>) {
3267 self.buffer
3268 .update(cx, |buffer, cx| buffer.finalize_last_transaction(cx));
3269 }
3270
3271 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
3272 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3273 let mut selections = self.local_selections::<Point>(cx);
3274 for selection in &mut selections {
3275 let start = selection.start.to_display_point(&display_map);
3276 let end = selection.end.to_display_point(&display_map);
3277
3278 if start != end {
3279 selection.end = selection.start.clone();
3280 } else {
3281 let cursor = movement::left(&display_map, start)
3282 .unwrap()
3283 .to_point(&display_map);
3284 selection.start = cursor.clone();
3285 selection.end = cursor;
3286 }
3287 selection.reversed = false;
3288 selection.goal = SelectionGoal::None;
3289 }
3290 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3291 }
3292
3293 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
3294 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3295 let mut selections = self.local_selections::<Point>(cx);
3296 for selection in &mut selections {
3297 let head = selection.head().to_display_point(&display_map);
3298 let cursor = movement::left(&display_map, head)
3299 .unwrap()
3300 .to_point(&display_map);
3301 selection.set_head(cursor);
3302 selection.goal = SelectionGoal::None;
3303 }
3304 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3305 }
3306
3307 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
3308 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3309 let mut selections = self.local_selections::<Point>(cx);
3310 for selection in &mut selections {
3311 let start = selection.start.to_display_point(&display_map);
3312 let end = selection.end.to_display_point(&display_map);
3313
3314 if start != end {
3315 selection.start = selection.end.clone();
3316 } else {
3317 let cursor = movement::right(&display_map, end)
3318 .unwrap()
3319 .to_point(&display_map);
3320 selection.start = cursor;
3321 selection.end = cursor;
3322 }
3323 selection.reversed = false;
3324 selection.goal = SelectionGoal::None;
3325 }
3326 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3327 }
3328
3329 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
3330 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3331 let mut selections = self.local_selections::<Point>(cx);
3332 for selection in &mut selections {
3333 let head = selection.head().to_display_point(&display_map);
3334 let cursor = movement::right(&display_map, head)
3335 .unwrap()
3336 .to_point(&display_map);
3337 selection.set_head(cursor);
3338 selection.goal = SelectionGoal::None;
3339 }
3340 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3341 }
3342
3343 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
3344 if self.take_rename(cx).is_some() {
3345 return;
3346 }
3347
3348 if let Some(context_menu) = self.context_menu.as_mut() {
3349 if context_menu.select_prev(cx) {
3350 return;
3351 }
3352 }
3353
3354 if matches!(self.mode, EditorMode::SingleLine) {
3355 cx.propagate_action();
3356 return;
3357 }
3358
3359 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3360 let mut selections = self.local_selections::<Point>(cx);
3361 for selection in &mut selections {
3362 let start = selection.start.to_display_point(&display_map);
3363 let end = selection.end.to_display_point(&display_map);
3364 if start != end {
3365 selection.goal = SelectionGoal::None;
3366 }
3367
3368 let (start, goal) = movement::up(&display_map, start, selection.goal).unwrap();
3369 let cursor = start.to_point(&display_map);
3370 selection.start = cursor;
3371 selection.end = cursor;
3372 selection.goal = goal;
3373 selection.reversed = false;
3374 }
3375 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3376 }
3377
3378 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
3379 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3380 let mut selections = self.local_selections::<Point>(cx);
3381 for selection in &mut selections {
3382 let head = selection.head().to_display_point(&display_map);
3383 let (head, goal) = movement::up(&display_map, head, selection.goal).unwrap();
3384 let cursor = head.to_point(&display_map);
3385 selection.set_head(cursor);
3386 selection.goal = goal;
3387 }
3388 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3389 }
3390
3391 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
3392 self.take_rename(cx);
3393
3394 if let Some(context_menu) = self.context_menu.as_mut() {
3395 if context_menu.select_next(cx) {
3396 return;
3397 }
3398 }
3399
3400 if matches!(self.mode, EditorMode::SingleLine) {
3401 cx.propagate_action();
3402 return;
3403 }
3404
3405 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3406 let mut selections = self.local_selections::<Point>(cx);
3407 for selection in &mut selections {
3408 let start = selection.start.to_display_point(&display_map);
3409 let end = selection.end.to_display_point(&display_map);
3410 if start != end {
3411 selection.goal = SelectionGoal::None;
3412 }
3413
3414 let (start, goal) = movement::down(&display_map, end, selection.goal).unwrap();
3415 let cursor = start.to_point(&display_map);
3416 selection.start = cursor;
3417 selection.end = cursor;
3418 selection.goal = goal;
3419 selection.reversed = false;
3420 }
3421 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3422 }
3423
3424 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
3425 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3426 let mut selections = self.local_selections::<Point>(cx);
3427 for selection in &mut selections {
3428 let head = selection.head().to_display_point(&display_map);
3429 let (head, goal) = movement::down(&display_map, head, selection.goal).unwrap();
3430 let cursor = head.to_point(&display_map);
3431 selection.set_head(cursor);
3432 selection.goal = goal;
3433 }
3434 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3435 }
3436
3437 pub fn move_to_previous_word_boundary(
3438 &mut self,
3439 _: &MoveToPreviousWordBoundary,
3440 cx: &mut ViewContext<Self>,
3441 ) {
3442 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3443 let mut selections = self.local_selections::<Point>(cx);
3444 for selection in &mut selections {
3445 let head = selection.head().to_display_point(&display_map);
3446 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3447 selection.start = cursor.clone();
3448 selection.end = cursor;
3449 selection.reversed = false;
3450 selection.goal = SelectionGoal::None;
3451 }
3452 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3453 }
3454
3455 pub fn select_to_previous_word_boundary(
3456 &mut self,
3457 _: &SelectToPreviousWordBoundary,
3458 cx: &mut ViewContext<Self>,
3459 ) {
3460 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3461 let mut selections = self.local_selections::<Point>(cx);
3462 for selection in &mut selections {
3463 let head = selection.head().to_display_point(&display_map);
3464 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3465 selection.set_head(cursor);
3466 selection.goal = SelectionGoal::None;
3467 }
3468 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3469 }
3470
3471 pub fn delete_to_previous_word_boundary(
3472 &mut self,
3473 _: &DeleteToPreviousWordBoundary,
3474 cx: &mut ViewContext<Self>,
3475 ) {
3476 self.start_transaction(cx);
3477 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3478 let mut selections = self.local_selections::<Point>(cx);
3479 for selection in &mut selections {
3480 if selection.is_empty() {
3481 let head = selection.head().to_display_point(&display_map);
3482 let cursor =
3483 movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3484 selection.set_head(cursor);
3485 selection.goal = SelectionGoal::None;
3486 }
3487 }
3488 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3489 self.insert("", cx);
3490 self.end_transaction(cx);
3491 }
3492
3493 pub fn move_to_next_word_boundary(
3494 &mut self,
3495 _: &MoveToNextWordBoundary,
3496 cx: &mut ViewContext<Self>,
3497 ) {
3498 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3499 let mut selections = self.local_selections::<Point>(cx);
3500 for selection in &mut selections {
3501 let head = selection.head().to_display_point(&display_map);
3502 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
3503 selection.start = cursor;
3504 selection.end = cursor;
3505 selection.reversed = false;
3506 selection.goal = SelectionGoal::None;
3507 }
3508 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3509 }
3510
3511 pub fn select_to_next_word_boundary(
3512 &mut self,
3513 _: &SelectToNextWordBoundary,
3514 cx: &mut ViewContext<Self>,
3515 ) {
3516 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3517 let mut selections = self.local_selections::<Point>(cx);
3518 for selection in &mut selections {
3519 let head = selection.head().to_display_point(&display_map);
3520 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
3521 selection.set_head(cursor);
3522 selection.goal = SelectionGoal::None;
3523 }
3524 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3525 }
3526
3527 pub fn delete_to_next_word_boundary(
3528 &mut self,
3529 _: &DeleteToNextWordBoundary,
3530 cx: &mut ViewContext<Self>,
3531 ) {
3532 self.start_transaction(cx);
3533 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3534 let mut selections = self.local_selections::<Point>(cx);
3535 for selection in &mut selections {
3536 if selection.is_empty() {
3537 let head = selection.head().to_display_point(&display_map);
3538 let cursor =
3539 movement::next_word_boundary(&display_map, head).to_point(&display_map);
3540 selection.set_head(cursor);
3541 selection.goal = SelectionGoal::None;
3542 }
3543 }
3544 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3545 self.insert("", cx);
3546 self.end_transaction(cx);
3547 }
3548
3549 pub fn move_to_beginning_of_line(
3550 &mut self,
3551 _: &MoveToBeginningOfLine,
3552 cx: &mut ViewContext<Self>,
3553 ) {
3554 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3555 let mut selections = self.local_selections::<Point>(cx);
3556 for selection in &mut selections {
3557 let head = selection.head().to_display_point(&display_map);
3558 let new_head = movement::line_beginning(&display_map, head, true);
3559 let cursor = new_head.to_point(&display_map);
3560 selection.start = cursor;
3561 selection.end = cursor;
3562 selection.reversed = false;
3563 selection.goal = SelectionGoal::None;
3564 }
3565 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3566 }
3567
3568 pub fn select_to_beginning_of_line(
3569 &mut self,
3570 SelectToBeginningOfLine(stop_at_soft_boundaries): &SelectToBeginningOfLine,
3571 cx: &mut ViewContext<Self>,
3572 ) {
3573 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3574 let mut selections = self.local_selections::<Point>(cx);
3575 for selection in &mut selections {
3576 let head = selection.head().to_display_point(&display_map);
3577 let new_head = movement::line_beginning(&display_map, head, *stop_at_soft_boundaries);
3578 selection.set_head(new_head.to_point(&display_map));
3579 selection.goal = SelectionGoal::None;
3580 }
3581 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3582 }
3583
3584 pub fn delete_to_beginning_of_line(
3585 &mut self,
3586 _: &DeleteToBeginningOfLine,
3587 cx: &mut ViewContext<Self>,
3588 ) {
3589 self.start_transaction(cx);
3590 self.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
3591 self.backspace(&Backspace, cx);
3592 self.end_transaction(cx);
3593 }
3594
3595 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
3596 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3597 let mut selections = self.local_selections::<Point>(cx);
3598 {
3599 for selection in &mut selections {
3600 let head = selection.head().to_display_point(&display_map);
3601 let new_head = movement::line_end(&display_map, head, true);
3602 let anchor = new_head.to_point(&display_map);
3603 selection.start = anchor.clone();
3604 selection.end = anchor;
3605 selection.reversed = false;
3606 selection.goal = SelectionGoal::None;
3607 }
3608 }
3609 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3610 }
3611
3612 pub fn select_to_end_of_line(
3613 &mut self,
3614 SelectToEndOfLine(stop_at_soft_boundaries): &SelectToEndOfLine,
3615 cx: &mut ViewContext<Self>,
3616 ) {
3617 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3618 let mut selections = self.local_selections::<Point>(cx);
3619 for selection in &mut selections {
3620 let head = selection.head().to_display_point(&display_map);
3621 let new_head = movement::line_end(&display_map, head, *stop_at_soft_boundaries);
3622 selection.set_head(new_head.to_point(&display_map));
3623 selection.goal = SelectionGoal::None;
3624 }
3625 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3626 }
3627
3628 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
3629 self.start_transaction(cx);
3630 self.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3631 self.delete(&Delete, cx);
3632 self.end_transaction(cx);
3633 }
3634
3635 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
3636 self.start_transaction(cx);
3637 self.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3638 self.cut(&Cut, cx);
3639 self.end_transaction(cx);
3640 }
3641
3642 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
3643 if matches!(self.mode, EditorMode::SingleLine) {
3644 cx.propagate_action();
3645 return;
3646 }
3647
3648 let selection = Selection {
3649 id: post_inc(&mut self.next_selection_id),
3650 start: 0,
3651 end: 0,
3652 reversed: false,
3653 goal: SelectionGoal::None,
3654 };
3655 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3656 }
3657
3658 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
3659 let mut selection = self.local_selections::<Point>(cx).last().unwrap().clone();
3660 selection.set_head(Point::zero());
3661 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3662 }
3663
3664 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
3665 if matches!(self.mode, EditorMode::SingleLine) {
3666 cx.propagate_action();
3667 return;
3668 }
3669
3670 let cursor = self.buffer.read(cx).read(cx).len();
3671 let selection = Selection {
3672 id: post_inc(&mut self.next_selection_id),
3673 start: cursor,
3674 end: cursor,
3675 reversed: false,
3676 goal: SelectionGoal::None,
3677 };
3678 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3679 }
3680
3681 pub fn set_nav_history(&mut self, nav_history: Option<ItemNavHistory>) {
3682 self.nav_history = nav_history;
3683 }
3684
3685 pub fn nav_history(&self) -> Option<&ItemNavHistory> {
3686 self.nav_history.as_ref()
3687 }
3688
3689 fn push_to_nav_history(
3690 &self,
3691 position: Anchor,
3692 new_position: Option<Point>,
3693 cx: &mut ViewContext<Self>,
3694 ) {
3695 if let Some(nav_history) = &self.nav_history {
3696 let buffer = self.buffer.read(cx).read(cx);
3697 let offset = position.to_offset(&buffer);
3698 let point = position.to_point(&buffer);
3699 drop(buffer);
3700
3701 if let Some(new_position) = new_position {
3702 let row_delta = (new_position.row as i64 - point.row as i64).abs();
3703 if row_delta < MIN_NAVIGATION_HISTORY_ROW_DELTA {
3704 return;
3705 }
3706 }
3707
3708 nav_history.push(Some(NavigationData {
3709 anchor: position,
3710 offset,
3711 }));
3712 }
3713 }
3714
3715 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
3716 let mut selection = self.local_selections::<usize>(cx).first().unwrap().clone();
3717 selection.set_head(self.buffer.read(cx).read(cx).len());
3718 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3719 }
3720
3721 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
3722 let selection = Selection {
3723 id: post_inc(&mut self.next_selection_id),
3724 start: 0,
3725 end: self.buffer.read(cx).read(cx).len(),
3726 reversed: false,
3727 goal: SelectionGoal::None,
3728 };
3729 self.update_selections(vec![selection], None, cx);
3730 }
3731
3732 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
3733 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3734 let mut selections = self.local_selections::<Point>(cx);
3735 let max_point = display_map.buffer_snapshot.max_point();
3736 for selection in &mut selections {
3737 let rows = selection.spanned_rows(true, &display_map);
3738 selection.start = Point::new(rows.start, 0);
3739 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
3740 selection.reversed = false;
3741 }
3742 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3743 }
3744
3745 pub fn split_selection_into_lines(
3746 &mut self,
3747 _: &SplitSelectionIntoLines,
3748 cx: &mut ViewContext<Self>,
3749 ) {
3750 let mut to_unfold = Vec::new();
3751 let mut new_selections = Vec::new();
3752 {
3753 let selections = self.local_selections::<Point>(cx);
3754 let buffer = self.buffer.read(cx).read(cx);
3755 for selection in selections {
3756 for row in selection.start.row..selection.end.row {
3757 let cursor = Point::new(row, buffer.line_len(row));
3758 new_selections.push(Selection {
3759 id: post_inc(&mut self.next_selection_id),
3760 start: cursor,
3761 end: cursor,
3762 reversed: false,
3763 goal: SelectionGoal::None,
3764 });
3765 }
3766 new_selections.push(Selection {
3767 id: selection.id,
3768 start: selection.end,
3769 end: selection.end,
3770 reversed: false,
3771 goal: SelectionGoal::None,
3772 });
3773 to_unfold.push(selection.start..selection.end);
3774 }
3775 }
3776 self.unfold_ranges(to_unfold, cx);
3777 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3778 }
3779
3780 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
3781 self.add_selection(true, cx);
3782 }
3783
3784 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
3785 self.add_selection(false, cx);
3786 }
3787
3788 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
3789 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3790 let mut selections = self.local_selections::<Point>(cx);
3791 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
3792 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
3793 let range = oldest_selection.display_range(&display_map).sorted();
3794 let columns = cmp::min(range.start.column(), range.end.column())
3795 ..cmp::max(range.start.column(), range.end.column());
3796
3797 selections.clear();
3798 let mut stack = Vec::new();
3799 for row in range.start.row()..=range.end.row() {
3800 if let Some(selection) = self.build_columnar_selection(
3801 &display_map,
3802 row,
3803 &columns,
3804 oldest_selection.reversed,
3805 ) {
3806 stack.push(selection.id);
3807 selections.push(selection);
3808 }
3809 }
3810
3811 if above {
3812 stack.reverse();
3813 }
3814
3815 AddSelectionsState { above, stack }
3816 });
3817
3818 let last_added_selection = *state.stack.last().unwrap();
3819 let mut new_selections = Vec::new();
3820 if above == state.above {
3821 let end_row = if above {
3822 0
3823 } else {
3824 display_map.max_point().row()
3825 };
3826
3827 'outer: for selection in selections {
3828 if selection.id == last_added_selection {
3829 let range = selection.display_range(&display_map).sorted();
3830 debug_assert_eq!(range.start.row(), range.end.row());
3831 let mut row = range.start.row();
3832 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
3833 {
3834 start..end
3835 } else {
3836 cmp::min(range.start.column(), range.end.column())
3837 ..cmp::max(range.start.column(), range.end.column())
3838 };
3839
3840 while row != end_row {
3841 if above {
3842 row -= 1;
3843 } else {
3844 row += 1;
3845 }
3846
3847 if let Some(new_selection) = self.build_columnar_selection(
3848 &display_map,
3849 row,
3850 &columns,
3851 selection.reversed,
3852 ) {
3853 state.stack.push(new_selection.id);
3854 if above {
3855 new_selections.push(new_selection);
3856 new_selections.push(selection);
3857 } else {
3858 new_selections.push(selection);
3859 new_selections.push(new_selection);
3860 }
3861
3862 continue 'outer;
3863 }
3864 }
3865 }
3866
3867 new_selections.push(selection);
3868 }
3869 } else {
3870 new_selections = selections;
3871 new_selections.retain(|s| s.id != last_added_selection);
3872 state.stack.pop();
3873 }
3874
3875 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3876 if state.stack.len() > 1 {
3877 self.add_selections_state = Some(state);
3878 }
3879 }
3880
3881 pub fn select_next(&mut self, action: &SelectNext, cx: &mut ViewContext<Self>) {
3882 let replace_newest = action.0;
3883 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3884 let buffer = &display_map.buffer_snapshot;
3885 let mut selections = self.local_selections::<usize>(cx);
3886 if let Some(mut select_next_state) = self.select_next_state.take() {
3887 let query = &select_next_state.query;
3888 if !select_next_state.done {
3889 let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
3890 let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
3891 let mut next_selected_range = None;
3892
3893 let bytes_after_last_selection =
3894 buffer.bytes_in_range(last_selection.end..buffer.len());
3895 let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
3896 let query_matches = query
3897 .stream_find_iter(bytes_after_last_selection)
3898 .map(|result| (last_selection.end, result))
3899 .chain(
3900 query
3901 .stream_find_iter(bytes_before_first_selection)
3902 .map(|result| (0, result)),
3903 );
3904 for (start_offset, query_match) in query_matches {
3905 let query_match = query_match.unwrap(); // can only fail due to I/O
3906 let offset_range =
3907 start_offset + query_match.start()..start_offset + query_match.end();
3908 let display_range = offset_range.start.to_display_point(&display_map)
3909 ..offset_range.end.to_display_point(&display_map);
3910
3911 if !select_next_state.wordwise
3912 || (!movement::is_inside_word(&display_map, display_range.start)
3913 && !movement::is_inside_word(&display_map, display_range.end))
3914 {
3915 next_selected_range = Some(offset_range);
3916 break;
3917 }
3918 }
3919
3920 if let Some(next_selected_range) = next_selected_range {
3921 if replace_newest {
3922 if let Some(newest_id) =
3923 selections.iter().max_by_key(|s| s.id).map(|s| s.id)
3924 {
3925 selections.retain(|s| s.id != newest_id);
3926 }
3927 }
3928 selections.push(Selection {
3929 id: post_inc(&mut self.next_selection_id),
3930 start: next_selected_range.start,
3931 end: next_selected_range.end,
3932 reversed: false,
3933 goal: SelectionGoal::None,
3934 });
3935 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3936 } else {
3937 select_next_state.done = true;
3938 }
3939 }
3940
3941 self.select_next_state = Some(select_next_state);
3942 } else if selections.len() == 1 {
3943 let selection = selections.last_mut().unwrap();
3944 if selection.start == selection.end {
3945 let word_range = movement::surrounding_word(
3946 &display_map,
3947 selection.start.to_display_point(&display_map),
3948 );
3949 selection.start = word_range.start.to_offset(&display_map, Bias::Left);
3950 selection.end = word_range.end.to_offset(&display_map, Bias::Left);
3951 selection.goal = SelectionGoal::None;
3952 selection.reversed = false;
3953
3954 let query = buffer
3955 .text_for_range(selection.start..selection.end)
3956 .collect::<String>();
3957 let select_state = SelectNextState {
3958 query: AhoCorasick::new_auto_configured(&[query]),
3959 wordwise: true,
3960 done: false,
3961 };
3962 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3963 self.select_next_state = Some(select_state);
3964 } else {
3965 let query = buffer
3966 .text_for_range(selection.start..selection.end)
3967 .collect::<String>();
3968 self.select_next_state = Some(SelectNextState {
3969 query: AhoCorasick::new_auto_configured(&[query]),
3970 wordwise: false,
3971 done: false,
3972 });
3973 self.select_next(action, cx);
3974 }
3975 }
3976 }
3977
3978 pub fn toggle_comments(&mut self, _: &ToggleComments, cx: &mut ViewContext<Self>) {
3979 // Get the line comment prefix. Split its trailing whitespace into a separate string,
3980 // as that portion won't be used for detecting if a line is a comment.
3981 let full_comment_prefix =
3982 if let Some(prefix) = self.language(cx).and_then(|l| l.line_comment_prefix()) {
3983 prefix.to_string()
3984 } else {
3985 return;
3986 };
3987 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
3988 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
3989
3990 self.start_transaction(cx);
3991 let mut selections = self.local_selections::<Point>(cx);
3992 let mut all_selection_lines_are_comments = true;
3993 let mut edit_ranges = Vec::new();
3994 let mut last_toggled_row = None;
3995 self.buffer.update(cx, |buffer, cx| {
3996 for selection in &mut selections {
3997 edit_ranges.clear();
3998 let snapshot = buffer.snapshot(cx);
3999
4000 let end_row =
4001 if selection.end.row > selection.start.row && selection.end.column == 0 {
4002 selection.end.row
4003 } else {
4004 selection.end.row + 1
4005 };
4006
4007 for row in selection.start.row..end_row {
4008 // If multiple selections contain a given row, avoid processing that
4009 // row more than once.
4010 if last_toggled_row == Some(row) {
4011 continue;
4012 } else {
4013 last_toggled_row = Some(row);
4014 }
4015
4016 if snapshot.is_line_blank(row) {
4017 continue;
4018 }
4019
4020 let start = Point::new(row, snapshot.indent_column_for_line(row));
4021 let mut line_bytes = snapshot
4022 .bytes_in_range(start..snapshot.max_point())
4023 .flatten()
4024 .copied();
4025
4026 // If this line currently begins with the line comment prefix, then record
4027 // the range containing the prefix.
4028 if all_selection_lines_are_comments
4029 && line_bytes
4030 .by_ref()
4031 .take(comment_prefix.len())
4032 .eq(comment_prefix.bytes())
4033 {
4034 // Include any whitespace that matches the comment prefix.
4035 let matching_whitespace_len = line_bytes
4036 .zip(comment_prefix_whitespace.bytes())
4037 .take_while(|(a, b)| a == b)
4038 .count() as u32;
4039 let end = Point::new(
4040 row,
4041 start.column + comment_prefix.len() as u32 + matching_whitespace_len,
4042 );
4043 edit_ranges.push(start..end);
4044 }
4045 // If this line does not begin with the line comment prefix, then record
4046 // the position where the prefix should be inserted.
4047 else {
4048 all_selection_lines_are_comments = false;
4049 edit_ranges.push(start..start);
4050 }
4051 }
4052
4053 if !edit_ranges.is_empty() {
4054 if all_selection_lines_are_comments {
4055 buffer.edit(edit_ranges.iter().cloned(), "", cx);
4056 } else {
4057 let min_column = edit_ranges.iter().map(|r| r.start.column).min().unwrap();
4058 let edit_ranges = edit_ranges.iter().map(|range| {
4059 let position = Point::new(range.start.row, min_column);
4060 position..position
4061 });
4062 buffer.edit(edit_ranges, &full_comment_prefix, cx);
4063 }
4064 }
4065 }
4066 });
4067
4068 self.update_selections(
4069 self.local_selections::<usize>(cx),
4070 Some(Autoscroll::Fit),
4071 cx,
4072 );
4073 self.end_transaction(cx);
4074 }
4075
4076 pub fn select_larger_syntax_node(
4077 &mut self,
4078 _: &SelectLargerSyntaxNode,
4079 cx: &mut ViewContext<Self>,
4080 ) {
4081 let old_selections = self.local_selections::<usize>(cx).into_boxed_slice();
4082 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4083 let buffer = self.buffer.read(cx).snapshot(cx);
4084
4085 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
4086 let mut selected_larger_node = false;
4087 let new_selections = old_selections
4088 .iter()
4089 .map(|selection| {
4090 let old_range = selection.start..selection.end;
4091 let mut new_range = old_range.clone();
4092 while let Some(containing_range) =
4093 buffer.range_for_syntax_ancestor(new_range.clone())
4094 {
4095 new_range = containing_range;
4096 if !display_map.intersects_fold(new_range.start)
4097 && !display_map.intersects_fold(new_range.end)
4098 {
4099 break;
4100 }
4101 }
4102
4103 selected_larger_node |= new_range != old_range;
4104 Selection {
4105 id: selection.id,
4106 start: new_range.start,
4107 end: new_range.end,
4108 goal: SelectionGoal::None,
4109 reversed: selection.reversed,
4110 }
4111 })
4112 .collect::<Vec<_>>();
4113
4114 if selected_larger_node {
4115 stack.push(old_selections);
4116 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
4117 }
4118 self.select_larger_syntax_node_stack = stack;
4119 }
4120
4121 pub fn select_smaller_syntax_node(
4122 &mut self,
4123 _: &SelectSmallerSyntaxNode,
4124 cx: &mut ViewContext<Self>,
4125 ) {
4126 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
4127 if let Some(selections) = stack.pop() {
4128 self.update_selections(selections.to_vec(), Some(Autoscroll::Fit), cx);
4129 }
4130 self.select_larger_syntax_node_stack = stack;
4131 }
4132
4133 pub fn move_to_enclosing_bracket(
4134 &mut self,
4135 _: &MoveToEnclosingBracket,
4136 cx: &mut ViewContext<Self>,
4137 ) {
4138 let mut selections = self.local_selections::<usize>(cx);
4139 let buffer = self.buffer.read(cx).snapshot(cx);
4140 for selection in &mut selections {
4141 if let Some((open_range, close_range)) =
4142 buffer.enclosing_bracket_ranges(selection.start..selection.end)
4143 {
4144 let close_range = close_range.to_inclusive();
4145 let destination = if close_range.contains(&selection.start)
4146 && close_range.contains(&selection.end)
4147 {
4148 open_range.end
4149 } else {
4150 *close_range.start()
4151 };
4152 selection.start = destination;
4153 selection.end = destination;
4154 }
4155 }
4156
4157 self.update_selections(selections, Some(Autoscroll::Fit), cx);
4158 }
4159
4160 pub fn show_next_diagnostic(&mut self, _: &ShowNextDiagnostic, cx: &mut ViewContext<Self>) {
4161 let buffer = self.buffer.read(cx).snapshot(cx);
4162 let selection = self.newest_selection_with_snapshot::<usize>(&buffer);
4163 let mut active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
4164 active_diagnostics
4165 .primary_range
4166 .to_offset(&buffer)
4167 .to_inclusive()
4168 });
4169 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
4170 if active_primary_range.contains(&selection.head()) {
4171 *active_primary_range.end()
4172 } else {
4173 selection.head()
4174 }
4175 } else {
4176 selection.head()
4177 };
4178
4179 loop {
4180 let next_group = buffer
4181 .diagnostics_in_range::<_, usize>(search_start..buffer.len())
4182 .find_map(|entry| {
4183 if entry.diagnostic.is_primary
4184 && !entry.range.is_empty()
4185 && Some(entry.range.end) != active_primary_range.as_ref().map(|r| *r.end())
4186 {
4187 Some((entry.range, entry.diagnostic.group_id))
4188 } else {
4189 None
4190 }
4191 });
4192
4193 if let Some((primary_range, group_id)) = next_group {
4194 self.activate_diagnostics(group_id, cx);
4195 self.update_selections(
4196 vec![Selection {
4197 id: selection.id,
4198 start: primary_range.start,
4199 end: primary_range.start,
4200 reversed: false,
4201 goal: SelectionGoal::None,
4202 }],
4203 Some(Autoscroll::Center),
4204 cx,
4205 );
4206 break;
4207 } else if search_start == 0 {
4208 break;
4209 } else {
4210 // Cycle around to the start of the buffer, potentially moving back to the start of
4211 // the currently active diagnostic.
4212 search_start = 0;
4213 active_primary_range.take();
4214 }
4215 }
4216 }
4217
4218 pub fn go_to_definition(
4219 workspace: &mut Workspace,
4220 _: &GoToDefinition,
4221 cx: &mut ViewContext<Workspace>,
4222 ) {
4223 let active_item = workspace.active_item(cx);
4224 let editor_handle = if let Some(editor) = active_item
4225 .as_ref()
4226 .and_then(|item| item.act_as::<Self>(cx))
4227 {
4228 editor
4229 } else {
4230 return;
4231 };
4232
4233 let editor = editor_handle.read(cx);
4234 let head = editor.newest_selection::<usize>(cx).head();
4235 let (buffer, head) =
4236 if let Some(text_anchor) = editor.buffer.read(cx).text_anchor_for_position(head, cx) {
4237 text_anchor
4238 } else {
4239 return;
4240 };
4241
4242 let definitions = workspace
4243 .project()
4244 .update(cx, |project, cx| project.definition(&buffer, head, cx));
4245 cx.spawn(|workspace, mut cx| async move {
4246 let definitions = definitions.await?;
4247 workspace.update(&mut cx, |workspace, cx| {
4248 let nav_history = workspace.active_pane().read(cx).nav_history().clone();
4249 for definition in definitions {
4250 let range = definition.range.to_offset(definition.buffer.read(cx));
4251 let target_editor_handle = workspace
4252 .open_item(BufferItemHandle(definition.buffer), cx)
4253 .downcast::<Self>()
4254 .unwrap();
4255
4256 target_editor_handle.update(cx, |target_editor, cx| {
4257 // When selecting a definition in a different buffer, disable the nav history
4258 // to avoid creating a history entry at the previous cursor location.
4259 if editor_handle != target_editor_handle {
4260 nav_history.borrow_mut().disable();
4261 }
4262 target_editor.select_ranges([range], Some(Autoscroll::Center), cx);
4263 nav_history.borrow_mut().enable();
4264 });
4265 }
4266 });
4267
4268 Ok::<(), anyhow::Error>(())
4269 })
4270 .detach_and_log_err(cx);
4271 }
4272
4273 pub fn find_all_references(
4274 workspace: &mut Workspace,
4275 _: &FindAllReferences,
4276 cx: &mut ViewContext<Workspace>,
4277 ) -> Option<Task<Result<()>>> {
4278 let active_item = workspace.active_item(cx)?;
4279 let editor_handle = active_item.act_as::<Self>(cx)?;
4280
4281 let editor = editor_handle.read(cx);
4282 let head = editor.newest_selection::<usize>(cx).head();
4283 let (buffer, head) = editor.buffer.read(cx).text_anchor_for_position(head, cx)?;
4284 let replica_id = editor.replica_id(cx);
4285
4286 let references = workspace
4287 .project()
4288 .update(cx, |project, cx| project.references(&buffer, head, cx));
4289 Some(cx.spawn(|workspace, mut cx| async move {
4290 let mut locations = references.await?;
4291 if locations.is_empty() {
4292 return Ok(());
4293 }
4294
4295 locations.sort_by_key(|location| location.buffer.id());
4296 let mut locations = locations.into_iter().peekable();
4297 let mut ranges_to_highlight = Vec::new();
4298
4299 let excerpt_buffer = cx.add_model(|cx| {
4300 let mut symbol_name = None;
4301 let mut multibuffer = MultiBuffer::new(replica_id);
4302 while let Some(location) = locations.next() {
4303 let buffer = location.buffer.read(cx);
4304 let mut ranges_for_buffer = Vec::new();
4305 let range = location.range.to_offset(buffer);
4306 ranges_for_buffer.push(range.clone());
4307 if symbol_name.is_none() {
4308 symbol_name = Some(buffer.text_for_range(range).collect::<String>());
4309 }
4310
4311 while let Some(next_location) = locations.peek() {
4312 if next_location.buffer == location.buffer {
4313 ranges_for_buffer.push(next_location.range.to_offset(buffer));
4314 locations.next();
4315 } else {
4316 break;
4317 }
4318 }
4319
4320 ranges_for_buffer.sort_by_key(|range| (range.start, Reverse(range.end)));
4321 ranges_to_highlight.extend(multibuffer.push_excerpts_with_context_lines(
4322 location.buffer.clone(),
4323 ranges_for_buffer,
4324 1,
4325 cx,
4326 ));
4327 }
4328 multibuffer.with_title(format!("References to `{}`", symbol_name.unwrap()))
4329 });
4330
4331 workspace.update(&mut cx, |workspace, cx| {
4332 let editor = workspace.open_item(MultiBufferItemHandle(excerpt_buffer), cx);
4333 if let Some(editor) = editor.act_as::<Self>(cx) {
4334 editor.update(cx, |editor, cx| {
4335 let color = editor.style(cx).highlighted_line_background;
4336 editor.highlight_ranges::<Self>(ranges_to_highlight, color, cx);
4337 });
4338 }
4339 });
4340
4341 Ok(())
4342 }))
4343 }
4344
4345 pub fn rename(&mut self, _: &Rename, cx: &mut ViewContext<Self>) -> Option<Task<Result<()>>> {
4346 use language::ToOffset as _;
4347
4348 let project = self.project.clone()?;
4349 let selection = self.newest_anchor_selection().clone();
4350 let (cursor_buffer, cursor_buffer_position) = self
4351 .buffer
4352 .read(cx)
4353 .text_anchor_for_position(selection.head(), cx)?;
4354 let (tail_buffer, tail_buffer_position) = self
4355 .buffer
4356 .read(cx)
4357 .text_anchor_for_position(selection.tail(), cx)?;
4358 if tail_buffer != cursor_buffer {
4359 return None;
4360 }
4361
4362 let snapshot = cursor_buffer.read(cx).snapshot();
4363 let cursor_buffer_offset = cursor_buffer_position.to_offset(&snapshot);
4364 let tail_buffer_offset = tail_buffer_position.to_offset(&snapshot);
4365 let prepare_rename = project.update(cx, |project, cx| {
4366 project.prepare_rename(cursor_buffer, cursor_buffer_offset, cx)
4367 });
4368
4369 Some(cx.spawn(|this, mut cx| async move {
4370 if let Some(rename_range) = prepare_rename.await? {
4371 let rename_buffer_range = rename_range.to_offset(&snapshot);
4372 let cursor_offset_in_rename_range =
4373 cursor_buffer_offset.saturating_sub(rename_buffer_range.start);
4374 let tail_offset_in_rename_range =
4375 tail_buffer_offset.saturating_sub(rename_buffer_range.start);
4376
4377 this.update(&mut cx, |this, cx| {
4378 this.take_rename(cx);
4379 let style = this.style(cx);
4380 let buffer = this.buffer.read(cx).read(cx);
4381 let cursor_offset = selection.head().to_offset(&buffer);
4382 let rename_start = cursor_offset.saturating_sub(cursor_offset_in_rename_range);
4383 let rename_end = rename_start + rename_buffer_range.len();
4384 let range = buffer.anchor_before(rename_start)..buffer.anchor_after(rename_end);
4385 let old_name = buffer
4386 .text_for_range(rename_start..rename_end)
4387 .collect::<String>();
4388 drop(buffer);
4389
4390 // Position the selection in the rename editor so that it matches the current selection.
4391 let rename_editor = cx.add_view(|cx| {
4392 let mut editor = Editor::single_line(this.settings.clone(), None, cx);
4393 editor
4394 .buffer
4395 .update(cx, |buffer, cx| buffer.edit([0..0], &old_name, cx));
4396 editor.select_ranges(
4397 [tail_offset_in_rename_range..cursor_offset_in_rename_range],
4398 None,
4399 cx,
4400 );
4401 editor.highlight_ranges::<Rename>(
4402 vec![Anchor::min()..Anchor::max()],
4403 style.diff_background_inserted,
4404 cx,
4405 );
4406 editor
4407 });
4408 this.highlight_ranges::<Rename>(
4409 vec![range.clone()],
4410 style.diff_background_deleted,
4411 cx,
4412 );
4413 this.update_selections(
4414 vec![Selection {
4415 id: selection.id,
4416 start: rename_end,
4417 end: rename_end,
4418 reversed: false,
4419 goal: SelectionGoal::None,
4420 }],
4421 None,
4422 cx,
4423 );
4424 cx.focus(&rename_editor);
4425 let block_id = this.insert_blocks(
4426 [BlockProperties {
4427 position: range.start.clone(),
4428 height: 1,
4429 render: Arc::new({
4430 let editor = rename_editor.clone();
4431 move |cx: &BlockContext| {
4432 ChildView::new(editor.clone())
4433 .contained()
4434 .with_padding_left(cx.anchor_x)
4435 .boxed()
4436 }
4437 }),
4438 disposition: BlockDisposition::Below,
4439 }],
4440 cx,
4441 )[0];
4442 this.pending_rename = Some(RenameState {
4443 range,
4444 old_name,
4445 editor: rename_editor,
4446 block_id,
4447 });
4448 });
4449 }
4450
4451 Ok(())
4452 }))
4453 }
4454
4455 pub fn confirm_rename(
4456 workspace: &mut Workspace,
4457 _: &ConfirmRename,
4458 cx: &mut ViewContext<Workspace>,
4459 ) -> Option<Task<Result<()>>> {
4460 let editor = workspace.active_item(cx)?.act_as::<Editor>(cx)?;
4461
4462 let (buffer, range, old_name, new_name) = editor.update(cx, |editor, cx| {
4463 let rename = editor.take_rename(cx)?;
4464 let buffer = editor.buffer.read(cx);
4465 let (start_buffer, start) =
4466 buffer.text_anchor_for_position(rename.range.start.clone(), cx)?;
4467 let (end_buffer, end) =
4468 buffer.text_anchor_for_position(rename.range.end.clone(), cx)?;
4469 if start_buffer == end_buffer {
4470 let new_name = rename.editor.read(cx).text(cx);
4471 Some((start_buffer, start..end, rename.old_name, new_name))
4472 } else {
4473 None
4474 }
4475 })?;
4476
4477 let rename = workspace.project().clone().update(cx, |project, cx| {
4478 project.perform_rename(
4479 buffer.clone(),
4480 range.start.clone(),
4481 new_name.clone(),
4482 true,
4483 cx,
4484 )
4485 });
4486
4487 Some(cx.spawn(|workspace, cx| async move {
4488 let project_transaction = rename.await?;
4489 Self::open_project_transaction(
4490 editor,
4491 workspace,
4492 project_transaction,
4493 format!("Rename: {} → {}", old_name, new_name),
4494 cx,
4495 )
4496 .await
4497 }))
4498 }
4499
4500 fn take_rename(&mut self, cx: &mut ViewContext<Self>) -> Option<RenameState> {
4501 let rename = self.pending_rename.take()?;
4502 self.remove_blocks([rename.block_id].into_iter().collect(), cx);
4503 self.clear_highlighted_ranges::<Rename>(cx);
4504
4505 let editor = rename.editor.read(cx);
4506 let snapshot = self.buffer.read(cx).snapshot(cx);
4507 let selection = editor.newest_selection_with_snapshot::<usize>(&snapshot);
4508
4509 // Update the selection to match the position of the selection inside
4510 // the rename editor.
4511 let rename_range = rename.range.to_offset(&snapshot);
4512 let start = snapshot
4513 .clip_offset(rename_range.start + selection.start, Bias::Left)
4514 .min(rename_range.end);
4515 let end = snapshot
4516 .clip_offset(rename_range.start + selection.end, Bias::Left)
4517 .min(rename_range.end);
4518 self.update_selections(
4519 vec![Selection {
4520 id: self.newest_anchor_selection().id,
4521 start,
4522 end,
4523 reversed: selection.reversed,
4524 goal: SelectionGoal::None,
4525 }],
4526 None,
4527 cx,
4528 );
4529
4530 Some(rename)
4531 }
4532
4533 fn invalidate_rename_range(
4534 &mut self,
4535 buffer: &MultiBufferSnapshot,
4536 cx: &mut ViewContext<Self>,
4537 ) {
4538 if let Some(rename) = self.pending_rename.as_ref() {
4539 if self.selections.len() == 1 {
4540 let head = self.selections[0].head().to_offset(buffer);
4541 let range = rename.range.to_offset(buffer).to_inclusive();
4542 if range.contains(&head) {
4543 return;
4544 }
4545 }
4546 let rename = self.pending_rename.take().unwrap();
4547 self.remove_blocks([rename.block_id].into_iter().collect(), cx);
4548 self.clear_highlighted_ranges::<Rename>(cx);
4549 }
4550 }
4551
4552 #[cfg(any(test, feature = "test-support"))]
4553 pub fn pending_rename(&self) -> Option<&RenameState> {
4554 self.pending_rename.as_ref()
4555 }
4556
4557 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
4558 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
4559 let buffer = self.buffer.read(cx).snapshot(cx);
4560 let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
4561 let is_valid = buffer
4562 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone())
4563 .any(|entry| {
4564 entry.diagnostic.is_primary
4565 && !entry.range.is_empty()
4566 && entry.range.start == primary_range_start
4567 && entry.diagnostic.message == active_diagnostics.primary_message
4568 });
4569
4570 if is_valid != active_diagnostics.is_valid {
4571 active_diagnostics.is_valid = is_valid;
4572 let mut new_styles = HashMap::default();
4573 for (block_id, diagnostic) in &active_diagnostics.blocks {
4574 new_styles.insert(
4575 *block_id,
4576 diagnostic_block_renderer(
4577 diagnostic.clone(),
4578 is_valid,
4579 self.settings.clone(),
4580 ),
4581 );
4582 }
4583 self.display_map
4584 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
4585 }
4586 }
4587 }
4588
4589 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) {
4590 self.dismiss_diagnostics(cx);
4591 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
4592 let buffer = self.buffer.read(cx).snapshot(cx);
4593
4594 let mut primary_range = None;
4595 let mut primary_message = None;
4596 let mut group_end = Point::zero();
4597 let diagnostic_group = buffer
4598 .diagnostic_group::<Point>(group_id)
4599 .map(|entry| {
4600 if entry.range.end > group_end {
4601 group_end = entry.range.end;
4602 }
4603 if entry.diagnostic.is_primary {
4604 primary_range = Some(entry.range.clone());
4605 primary_message = Some(entry.diagnostic.message.clone());
4606 }
4607 entry
4608 })
4609 .collect::<Vec<_>>();
4610 let primary_range = primary_range.unwrap();
4611 let primary_message = primary_message.unwrap();
4612 let primary_range =
4613 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
4614
4615 let blocks = display_map
4616 .insert_blocks(
4617 diagnostic_group.iter().map(|entry| {
4618 let diagnostic = entry.diagnostic.clone();
4619 let message_height = diagnostic.message.lines().count() as u8;
4620 BlockProperties {
4621 position: buffer.anchor_after(entry.range.start),
4622 height: message_height,
4623 render: diagnostic_block_renderer(
4624 diagnostic,
4625 true,
4626 self.settings.clone(),
4627 ),
4628 disposition: BlockDisposition::Below,
4629 }
4630 }),
4631 cx,
4632 )
4633 .into_iter()
4634 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
4635 .collect();
4636
4637 Some(ActiveDiagnosticGroup {
4638 primary_range,
4639 primary_message,
4640 blocks,
4641 is_valid: true,
4642 })
4643 });
4644 }
4645
4646 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
4647 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
4648 self.display_map.update(cx, |display_map, cx| {
4649 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
4650 });
4651 cx.notify();
4652 }
4653 }
4654
4655 fn build_columnar_selection(
4656 &mut self,
4657 display_map: &DisplaySnapshot,
4658 row: u32,
4659 columns: &Range<u32>,
4660 reversed: bool,
4661 ) -> Option<Selection<Point>> {
4662 let is_empty = columns.start == columns.end;
4663 let line_len = display_map.line_len(row);
4664 if columns.start < line_len || (is_empty && columns.start == line_len) {
4665 let start = DisplayPoint::new(row, columns.start);
4666 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
4667 Some(Selection {
4668 id: post_inc(&mut self.next_selection_id),
4669 start: start.to_point(display_map),
4670 end: end.to_point(display_map),
4671 reversed,
4672 goal: SelectionGoal::ColumnRange {
4673 start: columns.start,
4674 end: columns.end,
4675 },
4676 })
4677 } else {
4678 None
4679 }
4680 }
4681
4682 pub fn local_selections_in_range(
4683 &self,
4684 range: Range<Anchor>,
4685 display_map: &DisplaySnapshot,
4686 ) -> Vec<Selection<Point>> {
4687 let buffer = &display_map.buffer_snapshot;
4688
4689 let start_ix = match self
4690 .selections
4691 .binary_search_by(|probe| probe.end.cmp(&range.start, &buffer).unwrap())
4692 {
4693 Ok(ix) | Err(ix) => ix,
4694 };
4695 let end_ix = match self
4696 .selections
4697 .binary_search_by(|probe| probe.start.cmp(&range.end, &buffer).unwrap())
4698 {
4699 Ok(ix) => ix + 1,
4700 Err(ix) => ix,
4701 };
4702
4703 fn point_selection(
4704 selection: &Selection<Anchor>,
4705 buffer: &MultiBufferSnapshot,
4706 ) -> Selection<Point> {
4707 let start = selection.start.to_point(&buffer);
4708 let end = selection.end.to_point(&buffer);
4709 Selection {
4710 id: selection.id,
4711 start,
4712 end,
4713 reversed: selection.reversed,
4714 goal: selection.goal,
4715 }
4716 }
4717
4718 self.selections[start_ix..end_ix]
4719 .iter()
4720 .chain(
4721 self.pending_selection
4722 .as_ref()
4723 .map(|pending| &pending.selection),
4724 )
4725 .map(|s| point_selection(s, &buffer))
4726 .collect()
4727 }
4728
4729 pub fn local_selections<'a, D>(&self, cx: &'a AppContext) -> Vec<Selection<D>>
4730 where
4731 D: 'a + TextDimension + Ord + Sub<D, Output = D>,
4732 {
4733 let buffer = self.buffer.read(cx).snapshot(cx);
4734 let mut selections = self
4735 .resolve_selections::<D, _>(self.selections.iter(), &buffer)
4736 .peekable();
4737
4738 let mut pending_selection = self.pending_selection::<D>(&buffer);
4739
4740 iter::from_fn(move || {
4741 if let Some(pending) = pending_selection.as_mut() {
4742 while let Some(next_selection) = selections.peek() {
4743 if pending.start <= next_selection.end && pending.end >= next_selection.start {
4744 let next_selection = selections.next().unwrap();
4745 if next_selection.start < pending.start {
4746 pending.start = next_selection.start;
4747 }
4748 if next_selection.end > pending.end {
4749 pending.end = next_selection.end;
4750 }
4751 } else if next_selection.end < pending.start {
4752 return selections.next();
4753 } else {
4754 break;
4755 }
4756 }
4757
4758 pending_selection.take()
4759 } else {
4760 selections.next()
4761 }
4762 })
4763 .collect()
4764 }
4765
4766 fn resolve_selections<'a, D, I>(
4767 &self,
4768 selections: I,
4769 snapshot: &MultiBufferSnapshot,
4770 ) -> impl 'a + Iterator<Item = Selection<D>>
4771 where
4772 D: TextDimension + Ord + Sub<D, Output = D>,
4773 I: 'a + IntoIterator<Item = &'a Selection<Anchor>>,
4774 {
4775 let (to_summarize, selections) = selections.into_iter().tee();
4776 let mut summaries = snapshot
4777 .summaries_for_anchors::<D, _>(to_summarize.flat_map(|s| [&s.start, &s.end]))
4778 .into_iter();
4779 selections.map(move |s| Selection {
4780 id: s.id,
4781 start: summaries.next().unwrap(),
4782 end: summaries.next().unwrap(),
4783 reversed: s.reversed,
4784 goal: s.goal,
4785 })
4786 }
4787
4788 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4789 &self,
4790 snapshot: &MultiBufferSnapshot,
4791 ) -> Option<Selection<D>> {
4792 self.pending_selection
4793 .as_ref()
4794 .map(|pending| self.resolve_selection(&pending.selection, &snapshot))
4795 }
4796
4797 fn resolve_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4798 &self,
4799 selection: &Selection<Anchor>,
4800 buffer: &MultiBufferSnapshot,
4801 ) -> Selection<D> {
4802 Selection {
4803 id: selection.id,
4804 start: selection.start.summary::<D>(&buffer),
4805 end: selection.end.summary::<D>(&buffer),
4806 reversed: selection.reversed,
4807 goal: selection.goal,
4808 }
4809 }
4810
4811 fn selection_count<'a>(&self) -> usize {
4812 let mut count = self.selections.len();
4813 if self.pending_selection.is_some() {
4814 count += 1;
4815 }
4816 count
4817 }
4818
4819 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4820 &self,
4821 cx: &AppContext,
4822 ) -> Selection<D> {
4823 let snapshot = self.buffer.read(cx).read(cx);
4824 self.selections
4825 .iter()
4826 .min_by_key(|s| s.id)
4827 .map(|selection| self.resolve_selection(selection, &snapshot))
4828 .or_else(|| self.pending_selection(&snapshot))
4829 .unwrap()
4830 }
4831
4832 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4833 &self,
4834 cx: &AppContext,
4835 ) -> Selection<D> {
4836 self.resolve_selection(
4837 self.newest_anchor_selection(),
4838 &self.buffer.read(cx).read(cx),
4839 )
4840 }
4841
4842 pub fn newest_selection_with_snapshot<D: TextDimension + Ord + Sub<D, Output = D>>(
4843 &self,
4844 snapshot: &MultiBufferSnapshot,
4845 ) -> Selection<D> {
4846 self.resolve_selection(self.newest_anchor_selection(), snapshot)
4847 }
4848
4849 pub fn newest_anchor_selection(&self) -> &Selection<Anchor> {
4850 self.pending_selection
4851 .as_ref()
4852 .map(|s| &s.selection)
4853 .or_else(|| self.selections.iter().max_by_key(|s| s.id))
4854 .unwrap()
4855 }
4856
4857 pub fn update_selections<T>(
4858 &mut self,
4859 mut selections: Vec<Selection<T>>,
4860 autoscroll: Option<Autoscroll>,
4861 cx: &mut ViewContext<Self>,
4862 ) where
4863 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
4864 {
4865 let buffer = self.buffer.read(cx).snapshot(cx);
4866 selections.sort_unstable_by_key(|s| s.start);
4867
4868 // Merge overlapping selections.
4869 let mut i = 1;
4870 while i < selections.len() {
4871 if selections[i - 1].end >= selections[i].start {
4872 let removed = selections.remove(i);
4873 if removed.start < selections[i - 1].start {
4874 selections[i - 1].start = removed.start;
4875 }
4876 if removed.end > selections[i - 1].end {
4877 selections[i - 1].end = removed.end;
4878 }
4879 } else {
4880 i += 1;
4881 }
4882 }
4883
4884 if let Some(autoscroll) = autoscroll {
4885 self.request_autoscroll(autoscroll, cx);
4886 }
4887
4888 self.set_selections(
4889 Arc::from_iter(selections.into_iter().map(|selection| {
4890 let end_bias = if selection.end > selection.start {
4891 Bias::Left
4892 } else {
4893 Bias::Right
4894 };
4895 Selection {
4896 id: selection.id,
4897 start: buffer.anchor_after(selection.start),
4898 end: buffer.anchor_at(selection.end, end_bias),
4899 reversed: selection.reversed,
4900 goal: selection.goal,
4901 }
4902 })),
4903 None,
4904 cx,
4905 );
4906 }
4907
4908 /// Compute new ranges for any selections that were located in excerpts that have
4909 /// since been removed.
4910 ///
4911 /// Returns a `HashMap` indicating which selections whose former head position
4912 /// was no longer present. The keys of the map are selection ids. The values are
4913 /// the id of the new excerpt where the head of the selection has been moved.
4914 pub fn refresh_selections(&mut self, cx: &mut ViewContext<Self>) -> HashMap<usize, ExcerptId> {
4915 let snapshot = self.buffer.read(cx).read(cx);
4916 let anchors_with_status = snapshot.refresh_anchors(
4917 self.selections
4918 .iter()
4919 .flat_map(|selection| [&selection.start, &selection.end]),
4920 );
4921 let offsets =
4922 snapshot.summaries_for_anchors::<usize, _>(anchors_with_status.iter().map(|a| &a.1));
4923 let offsets = offsets.chunks(2);
4924 let statuses = anchors_with_status
4925 .chunks(2)
4926 .map(|a| (a[0].0 / 2, a[0].2, a[1].2));
4927
4928 let mut selections_with_lost_position = HashMap::default();
4929 let new_selections = offsets
4930 .zip(statuses)
4931 .map(|(offsets, (selection_ix, kept_start, kept_end))| {
4932 let selection = &self.selections[selection_ix];
4933 let kept_head = if selection.reversed {
4934 kept_start
4935 } else {
4936 kept_end
4937 };
4938 if !kept_head {
4939 selections_with_lost_position
4940 .insert(selection.id, selection.head().excerpt_id.clone());
4941 }
4942
4943 Selection {
4944 id: selection.id,
4945 start: offsets[0],
4946 end: offsets[1],
4947 reversed: selection.reversed,
4948 goal: selection.goal,
4949 }
4950 })
4951 .collect();
4952 drop(snapshot);
4953 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
4954 selections_with_lost_position
4955 }
4956
4957 fn set_selections(
4958 &mut self,
4959 selections: Arc<[Selection<Anchor>]>,
4960 pending_selection: Option<PendingSelection>,
4961 cx: &mut ViewContext<Self>,
4962 ) {
4963 let old_cursor_position = self.newest_anchor_selection().head();
4964
4965 self.selections = selections;
4966 self.pending_selection = pending_selection;
4967 if self.focused {
4968 self.buffer.update(cx, |buffer, cx| {
4969 buffer.set_active_selections(&self.selections, cx)
4970 });
4971 }
4972
4973 let display_map = self
4974 .display_map
4975 .update(cx, |display_map, cx| display_map.snapshot(cx));
4976 let buffer = &display_map.buffer_snapshot;
4977 self.add_selections_state = None;
4978 self.select_next_state = None;
4979 self.select_larger_syntax_node_stack.clear();
4980 self.autoclose_stack.invalidate(&self.selections, &buffer);
4981 self.snippet_stack.invalidate(&self.selections, &buffer);
4982 self.invalidate_rename_range(&buffer, cx);
4983
4984 let new_cursor_position = self.newest_anchor_selection().head();
4985
4986 self.push_to_nav_history(
4987 old_cursor_position.clone(),
4988 Some(new_cursor_position.to_point(&buffer)),
4989 cx,
4990 );
4991
4992 let completion_menu = match self.context_menu.as_mut() {
4993 Some(ContextMenu::Completions(menu)) => Some(menu),
4994 _ => {
4995 self.context_menu.take();
4996 None
4997 }
4998 };
4999
5000 if let Some(completion_menu) = completion_menu {
5001 let cursor_position = new_cursor_position.to_offset(&buffer);
5002 let (word_range, kind) =
5003 buffer.surrounding_word(completion_menu.initial_position.clone());
5004 if kind == Some(CharKind::Word) && word_range.to_inclusive().contains(&cursor_position)
5005 {
5006 let query = Self::completion_query(&buffer, cursor_position);
5007 cx.background()
5008 .block(completion_menu.filter(query.as_deref(), cx.background().clone()));
5009 self.show_completions(&ShowCompletions, cx);
5010 } else {
5011 self.hide_context_menu(cx);
5012 }
5013 }
5014
5015 if old_cursor_position.to_display_point(&display_map).row()
5016 != new_cursor_position.to_display_point(&display_map).row()
5017 {
5018 self.available_code_actions.take();
5019 }
5020 self.refresh_code_actions(cx);
5021 self.refresh_document_highlights(cx);
5022
5023 self.pause_cursor_blinking(cx);
5024 cx.emit(Event::SelectionsChanged);
5025 }
5026
5027 pub fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
5028 self.autoscroll_request = Some(autoscroll);
5029 cx.notify();
5030 }
5031
5032 fn start_transaction(&mut self, cx: &mut ViewContext<Self>) {
5033 self.start_transaction_at(Instant::now(), cx);
5034 }
5035
5036 fn start_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
5037 self.end_selection(cx);
5038 if let Some(tx_id) = self
5039 .buffer
5040 .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
5041 {
5042 self.selection_history
5043 .insert(tx_id, (self.selections.clone(), None));
5044 }
5045 }
5046
5047 fn end_transaction(&mut self, cx: &mut ViewContext<Self>) {
5048 self.end_transaction_at(Instant::now(), cx);
5049 }
5050
5051 fn end_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
5052 if let Some(tx_id) = self
5053 .buffer
5054 .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
5055 {
5056 if let Some((_, end_selections)) = self.selection_history.get_mut(&tx_id) {
5057 *end_selections = Some(self.selections.clone());
5058 } else {
5059 log::error!("unexpectedly ended a transaction that wasn't started by this editor");
5060 }
5061 }
5062 }
5063
5064 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
5065 log::info!("Editor::page_up");
5066 }
5067
5068 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
5069 log::info!("Editor::page_down");
5070 }
5071
5072 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
5073 let mut fold_ranges = Vec::new();
5074
5075 let selections = self.local_selections::<Point>(cx);
5076 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
5077 for selection in selections {
5078 let range = selection.display_range(&display_map).sorted();
5079 let buffer_start_row = range.start.to_point(&display_map).row;
5080
5081 for row in (0..=range.end.row()).rev() {
5082 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
5083 let fold_range = self.foldable_range_for_line(&display_map, row);
5084 if fold_range.end.row >= buffer_start_row {
5085 fold_ranges.push(fold_range);
5086 if row <= range.start.row() {
5087 break;
5088 }
5089 }
5090 }
5091 }
5092 }
5093
5094 self.fold_ranges(fold_ranges, cx);
5095 }
5096
5097 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
5098 let selections = self.local_selections::<Point>(cx);
5099 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
5100 let buffer = &display_map.buffer_snapshot;
5101 let ranges = selections
5102 .iter()
5103 .map(|s| {
5104 let range = s.display_range(&display_map).sorted();
5105 let mut start = range.start.to_point(&display_map);
5106 let mut end = range.end.to_point(&display_map);
5107 start.column = 0;
5108 end.column = buffer.line_len(end.row);
5109 start..end
5110 })
5111 .collect::<Vec<_>>();
5112 self.unfold_ranges(ranges, cx);
5113 }
5114
5115 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
5116 let max_point = display_map.max_point();
5117 if display_row >= max_point.row() {
5118 false
5119 } else {
5120 let (start_indent, is_blank) = display_map.line_indent(display_row);
5121 if is_blank {
5122 false
5123 } else {
5124 for display_row in display_row + 1..=max_point.row() {
5125 let (indent, is_blank) = display_map.line_indent(display_row);
5126 if !is_blank {
5127 return indent > start_indent;
5128 }
5129 }
5130 false
5131 }
5132 }
5133 }
5134
5135 fn foldable_range_for_line(
5136 &self,
5137 display_map: &DisplaySnapshot,
5138 start_row: u32,
5139 ) -> Range<Point> {
5140 let max_point = display_map.max_point();
5141
5142 let (start_indent, _) = display_map.line_indent(start_row);
5143 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
5144 let mut end = None;
5145 for row in start_row + 1..=max_point.row() {
5146 let (indent, is_blank) = display_map.line_indent(row);
5147 if !is_blank && indent <= start_indent {
5148 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
5149 break;
5150 }
5151 }
5152
5153 let end = end.unwrap_or(max_point);
5154 return start.to_point(display_map)..end.to_point(display_map);
5155 }
5156
5157 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
5158 let selections = self.local_selections::<Point>(cx);
5159 let ranges = selections.into_iter().map(|s| s.start..s.end);
5160 self.fold_ranges(ranges, cx);
5161 }
5162
5163 fn fold_ranges<T: ToOffset>(
5164 &mut self,
5165 ranges: impl IntoIterator<Item = Range<T>>,
5166 cx: &mut ViewContext<Self>,
5167 ) {
5168 let mut ranges = ranges.into_iter().peekable();
5169 if ranges.peek().is_some() {
5170 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
5171 self.request_autoscroll(Autoscroll::Fit, cx);
5172 cx.notify();
5173 }
5174 }
5175
5176 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
5177 if !ranges.is_empty() {
5178 self.display_map
5179 .update(cx, |map, cx| map.unfold(ranges, cx));
5180 self.request_autoscroll(Autoscroll::Fit, cx);
5181 cx.notify();
5182 }
5183 }
5184
5185 pub fn insert_blocks(
5186 &mut self,
5187 blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
5188 cx: &mut ViewContext<Self>,
5189 ) -> Vec<BlockId> {
5190 let blocks = self
5191 .display_map
5192 .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
5193 self.request_autoscroll(Autoscroll::Fit, cx);
5194 blocks
5195 }
5196
5197 pub fn replace_blocks(
5198 &mut self,
5199 blocks: HashMap<BlockId, RenderBlock>,
5200 cx: &mut ViewContext<Self>,
5201 ) {
5202 self.display_map
5203 .update(cx, |display_map, _| display_map.replace_blocks(blocks));
5204 self.request_autoscroll(Autoscroll::Fit, cx);
5205 }
5206
5207 pub fn remove_blocks(&mut self, block_ids: HashSet<BlockId>, cx: &mut ViewContext<Self>) {
5208 self.display_map.update(cx, |display_map, cx| {
5209 display_map.remove_blocks(block_ids, cx)
5210 });
5211 }
5212
5213 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
5214 self.display_map
5215 .update(cx, |map, cx| map.snapshot(cx))
5216 .longest_row()
5217 }
5218
5219 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
5220 self.display_map
5221 .update(cx, |map, cx| map.snapshot(cx))
5222 .max_point()
5223 }
5224
5225 pub fn text(&self, cx: &AppContext) -> String {
5226 self.buffer.read(cx).read(cx).text()
5227 }
5228
5229 pub fn set_text(&mut self, text: impl Into<String>, cx: &mut ViewContext<Self>) {
5230 self.buffer
5231 .read(cx)
5232 .as_singleton()
5233 .expect("you can only call set_text on editors for singleton buffers")
5234 .update(cx, |buffer, cx| buffer.set_text(text, cx));
5235 }
5236
5237 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
5238 self.display_map
5239 .update(cx, |map, cx| map.snapshot(cx))
5240 .text()
5241 }
5242
5243 pub fn soft_wrap_mode(&self, cx: &AppContext) -> SoftWrap {
5244 let language = self.language(cx);
5245 let settings = self.settings.borrow();
5246 let mode = self
5247 .soft_wrap_mode_override
5248 .unwrap_or_else(|| settings.soft_wrap(language));
5249 match mode {
5250 settings::SoftWrap::None => SoftWrap::None,
5251 settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
5252 settings::SoftWrap::PreferredLineLength => {
5253 SoftWrap::Column(settings.preferred_line_length(language))
5254 }
5255 }
5256 }
5257
5258 pub fn set_soft_wrap_mode(&mut self, mode: settings::SoftWrap, cx: &mut ViewContext<Self>) {
5259 self.soft_wrap_mode_override = Some(mode);
5260 cx.notify();
5261 }
5262
5263 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
5264 self.display_map
5265 .update(cx, |map, cx| map.set_wrap_width(width, cx))
5266 }
5267
5268 pub fn set_highlighted_rows(&mut self, rows: Option<Range<u32>>) {
5269 self.highlighted_rows = rows;
5270 }
5271
5272 pub fn highlighted_rows(&self) -> Option<Range<u32>> {
5273 self.highlighted_rows.clone()
5274 }
5275
5276 pub fn highlight_ranges<T: 'static>(
5277 &mut self,
5278 ranges: Vec<Range<Anchor>>,
5279 color: Color,
5280 cx: &mut ViewContext<Self>,
5281 ) {
5282 self.highlighted_ranges
5283 .insert(TypeId::of::<T>(), (color, ranges));
5284 cx.notify();
5285 }
5286
5287 pub fn clear_highlighted_ranges<T: 'static>(
5288 &mut self,
5289 cx: &mut ViewContext<Self>,
5290 ) -> Option<(Color, Vec<Range<Anchor>>)> {
5291 cx.notify();
5292 self.highlighted_ranges.remove(&TypeId::of::<T>())
5293 }
5294
5295 #[cfg(feature = "test-support")]
5296 pub fn all_highlighted_ranges(
5297 &mut self,
5298 cx: &mut ViewContext<Self>,
5299 ) -> Vec<(Range<DisplayPoint>, Color)> {
5300 let snapshot = self.snapshot(cx);
5301 let buffer = &snapshot.buffer_snapshot;
5302 let start = buffer.anchor_before(0);
5303 let end = buffer.anchor_after(buffer.len());
5304 self.highlighted_ranges_in_range(start..end, &snapshot)
5305 }
5306
5307 pub fn highlighted_ranges_for_type<T: 'static>(&self) -> Option<(Color, &[Range<Anchor>])> {
5308 self.highlighted_ranges
5309 .get(&TypeId::of::<T>())
5310 .map(|(color, ranges)| (*color, ranges.as_slice()))
5311 }
5312
5313 pub fn highlighted_ranges_in_range(
5314 &self,
5315 search_range: Range<Anchor>,
5316 display_snapshot: &DisplaySnapshot,
5317 ) -> Vec<(Range<DisplayPoint>, Color)> {
5318 let mut results = Vec::new();
5319 let buffer = &display_snapshot.buffer_snapshot;
5320 for (color, ranges) in self.highlighted_ranges.values() {
5321 let start_ix = match ranges.binary_search_by(|probe| {
5322 let cmp = probe.end.cmp(&search_range.start, &buffer).unwrap();
5323 if cmp.is_gt() {
5324 Ordering::Greater
5325 } else {
5326 Ordering::Less
5327 }
5328 }) {
5329 Ok(i) | Err(i) => i,
5330 };
5331 for range in &ranges[start_ix..] {
5332 if range.start.cmp(&search_range.end, &buffer).unwrap().is_ge() {
5333 break;
5334 }
5335 let start = range
5336 .start
5337 .to_point(buffer)
5338 .to_display_point(display_snapshot);
5339 let end = range
5340 .end
5341 .to_point(buffer)
5342 .to_display_point(display_snapshot);
5343 results.push((start..end, *color))
5344 }
5345 }
5346 results
5347 }
5348
5349 fn next_blink_epoch(&mut self) -> usize {
5350 self.blink_epoch += 1;
5351 self.blink_epoch
5352 }
5353
5354 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
5355 if !self.focused {
5356 return;
5357 }
5358
5359 self.show_local_cursors = true;
5360 cx.notify();
5361
5362 let epoch = self.next_blink_epoch();
5363 cx.spawn(|this, mut cx| {
5364 let this = this.downgrade();
5365 async move {
5366 Timer::after(CURSOR_BLINK_INTERVAL).await;
5367 if let Some(this) = this.upgrade(&cx) {
5368 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
5369 }
5370 }
5371 })
5372 .detach();
5373 }
5374
5375 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
5376 if epoch == self.blink_epoch {
5377 self.blinking_paused = false;
5378 self.blink_cursors(epoch, cx);
5379 }
5380 }
5381
5382 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
5383 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
5384 self.show_local_cursors = !self.show_local_cursors;
5385 cx.notify();
5386
5387 let epoch = self.next_blink_epoch();
5388 cx.spawn(|this, mut cx| {
5389 let this = this.downgrade();
5390 async move {
5391 Timer::after(CURSOR_BLINK_INTERVAL).await;
5392 if let Some(this) = this.upgrade(&cx) {
5393 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
5394 }
5395 }
5396 })
5397 .detach();
5398 }
5399 }
5400
5401 pub fn show_local_cursors(&self) -> bool {
5402 self.show_local_cursors
5403 }
5404
5405 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
5406 cx.notify();
5407 }
5408
5409 fn on_buffer_event(
5410 &mut self,
5411 _: ModelHandle<MultiBuffer>,
5412 event: &language::Event,
5413 cx: &mut ViewContext<Self>,
5414 ) {
5415 match event {
5416 language::Event::Edited => {
5417 self.refresh_active_diagnostics(cx);
5418 self.refresh_code_actions(cx);
5419 cx.emit(Event::Edited);
5420 }
5421 language::Event::Dirtied => cx.emit(Event::Dirtied),
5422 language::Event::Saved => cx.emit(Event::Saved),
5423 language::Event::FileHandleChanged => cx.emit(Event::TitleChanged),
5424 language::Event::Reloaded => cx.emit(Event::TitleChanged),
5425 language::Event::Closed => cx.emit(Event::Closed),
5426 language::Event::DiagnosticsUpdated => {
5427 self.refresh_active_diagnostics(cx);
5428 }
5429 _ => {}
5430 }
5431 }
5432
5433 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
5434 cx.notify();
5435 }
5436
5437 pub fn set_searchable(&mut self, searchable: bool) {
5438 self.searchable = searchable;
5439 }
5440
5441 pub fn searchable(&self) -> bool {
5442 self.searchable
5443 }
5444
5445 fn open_excerpts(workspace: &mut Workspace, _: &OpenExcerpts, cx: &mut ViewContext<Workspace>) {
5446 let active_item = workspace.active_item(cx);
5447 let editor_handle = if let Some(editor) = active_item
5448 .as_ref()
5449 .and_then(|item| item.act_as::<Self>(cx))
5450 {
5451 editor
5452 } else {
5453 cx.propagate_action();
5454 return;
5455 };
5456
5457 let editor = editor_handle.read(cx);
5458 let buffer = editor.buffer.read(cx);
5459 if buffer.is_singleton() {
5460 cx.propagate_action();
5461 return;
5462 }
5463
5464 let mut new_selections_by_buffer = HashMap::default();
5465 for selection in editor.local_selections::<usize>(cx) {
5466 for (buffer, mut range) in
5467 buffer.range_to_buffer_ranges(selection.start..selection.end, cx)
5468 {
5469 if selection.reversed {
5470 mem::swap(&mut range.start, &mut range.end);
5471 }
5472 new_selections_by_buffer
5473 .entry(buffer)
5474 .or_insert(Vec::new())
5475 .push(range)
5476 }
5477 }
5478
5479 editor_handle.update(cx, |editor, cx| {
5480 editor.push_to_nav_history(editor.newest_anchor_selection().head(), None, cx);
5481 });
5482 let nav_history = workspace.active_pane().read(cx).nav_history().clone();
5483 nav_history.borrow_mut().disable();
5484
5485 // We defer the pane interaction because we ourselves are a workspace item
5486 // and activating a new item causes the pane to call a method on us reentrantly,
5487 // which panics if we're on the stack.
5488 cx.defer(move |workspace, cx| {
5489 for (ix, (buffer, ranges)) in new_selections_by_buffer.into_iter().enumerate() {
5490 let buffer = BufferItemHandle(buffer);
5491 if ix == 0 && !workspace.activate_pane_for_item(&buffer, cx) {
5492 workspace.activate_next_pane(cx);
5493 }
5494
5495 let editor = workspace
5496 .open_item(buffer, cx)
5497 .downcast::<Editor>()
5498 .unwrap();
5499
5500 editor.update(cx, |editor, cx| {
5501 editor.select_ranges(ranges, Some(Autoscroll::Newest), cx);
5502 });
5503 }
5504
5505 nav_history.borrow_mut().enable();
5506 });
5507 }
5508}
5509
5510impl EditorSnapshot {
5511 pub fn is_focused(&self) -> bool {
5512 self.is_focused
5513 }
5514
5515 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
5516 self.placeholder_text.as_ref()
5517 }
5518
5519 pub fn scroll_position(&self) -> Vector2F {
5520 compute_scroll_position(
5521 &self.display_snapshot,
5522 self.scroll_position,
5523 &self.scroll_top_anchor,
5524 )
5525 }
5526}
5527
5528impl Deref for EditorSnapshot {
5529 type Target = DisplaySnapshot;
5530
5531 fn deref(&self) -> &Self::Target {
5532 &self.display_snapshot
5533 }
5534}
5535
5536fn compute_scroll_position(
5537 snapshot: &DisplaySnapshot,
5538 mut scroll_position: Vector2F,
5539 scroll_top_anchor: &Option<Anchor>,
5540) -> Vector2F {
5541 if let Some(anchor) = scroll_top_anchor {
5542 let scroll_top = anchor.to_display_point(snapshot).row() as f32;
5543 scroll_position.set_y(scroll_top + scroll_position.y());
5544 } else {
5545 scroll_position.set_y(0.);
5546 }
5547 scroll_position
5548}
5549
5550#[derive(Copy, Clone)]
5551pub enum Event {
5552 Activate,
5553 Edited,
5554 Blurred,
5555 Dirtied,
5556 Saved,
5557 TitleChanged,
5558 SelectionsChanged,
5559 Closed,
5560}
5561
5562impl Entity for Editor {
5563 type Event = Event;
5564}
5565
5566impl View for Editor {
5567 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
5568 let style = self.style(cx);
5569 self.display_map.update(cx, |map, cx| {
5570 map.set_font(style.text.font_id, style.text.font_size, cx)
5571 });
5572 EditorElement::new(self.handle.clone(), style.clone()).boxed()
5573 }
5574
5575 fn ui_name() -> &'static str {
5576 "Editor"
5577 }
5578
5579 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
5580 self.focused = true;
5581 self.blink_cursors(self.blink_epoch, cx);
5582 self.buffer.update(cx, |buffer, cx| {
5583 buffer.finalize_last_transaction(cx);
5584 buffer.set_active_selections(&self.selections, cx)
5585 });
5586 }
5587
5588 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
5589 self.focused = false;
5590 self.show_local_cursors = false;
5591 self.buffer
5592 .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
5593 self.hide_context_menu(cx);
5594 cx.emit(Event::Blurred);
5595 cx.notify();
5596 }
5597
5598 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
5599 let mut cx = Self::default_keymap_context();
5600 let mode = match self.mode {
5601 EditorMode::SingleLine => "single_line",
5602 EditorMode::AutoHeight { .. } => "auto_height",
5603 EditorMode::Full => "full",
5604 };
5605 cx.map.insert("mode".into(), mode.into());
5606 if self.pending_rename.is_some() {
5607 cx.set.insert("renaming".into());
5608 }
5609 match self.context_menu.as_ref() {
5610 Some(ContextMenu::Completions(_)) => {
5611 cx.set.insert("showing_completions".into());
5612 }
5613 Some(ContextMenu::CodeActions(_)) => {
5614 cx.set.insert("showing_code_actions".into());
5615 }
5616 None => {}
5617 }
5618 cx
5619 }
5620}
5621
5622fn build_style(
5623 settings: &Settings,
5624 get_field_editor_theme: Option<GetFieldEditorTheme>,
5625 cx: &AppContext,
5626) -> EditorStyle {
5627 let mut theme = settings.theme.editor.clone();
5628 if let Some(get_field_editor_theme) = get_field_editor_theme {
5629 let field_editor_theme = get_field_editor_theme(&settings.theme);
5630 if let Some(background) = field_editor_theme.container.background_color {
5631 theme.background = background;
5632 }
5633 theme.text_color = field_editor_theme.text.color;
5634 theme.selection = field_editor_theme.selection;
5635 EditorStyle {
5636 text: field_editor_theme.text,
5637 placeholder_text: field_editor_theme.placeholder_text,
5638 theme,
5639 }
5640 } else {
5641 let font_cache = cx.font_cache();
5642 let font_family_id = settings.buffer_font_family;
5643 let font_family_name = cx.font_cache().family_name(font_family_id).unwrap();
5644 let font_properties = Default::default();
5645 let font_id = font_cache
5646 .select_font(font_family_id, &font_properties)
5647 .unwrap();
5648 let font_size = settings.buffer_font_size;
5649 EditorStyle {
5650 text: TextStyle {
5651 color: settings.theme.editor.text_color,
5652 font_family_name,
5653 font_family_id,
5654 font_id,
5655 font_size,
5656 font_properties,
5657 underline: None,
5658 },
5659 placeholder_text: None,
5660 theme,
5661 }
5662 }
5663}
5664
5665impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
5666 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
5667 let start = self.start.to_point(buffer);
5668 let end = self.end.to_point(buffer);
5669 if self.reversed {
5670 end..start
5671 } else {
5672 start..end
5673 }
5674 }
5675
5676 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
5677 let start = self.start.to_offset(buffer);
5678 let end = self.end.to_offset(buffer);
5679 if self.reversed {
5680 end..start
5681 } else {
5682 start..end
5683 }
5684 }
5685
5686 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
5687 let start = self
5688 .start
5689 .to_point(&map.buffer_snapshot)
5690 .to_display_point(map);
5691 let end = self
5692 .end
5693 .to_point(&map.buffer_snapshot)
5694 .to_display_point(map);
5695 if self.reversed {
5696 end..start
5697 } else {
5698 start..end
5699 }
5700 }
5701
5702 fn spanned_rows(
5703 &self,
5704 include_end_if_at_line_start: bool,
5705 map: &DisplaySnapshot,
5706 ) -> Range<u32> {
5707 let start = self.start.to_point(&map.buffer_snapshot);
5708 let mut end = self.end.to_point(&map.buffer_snapshot);
5709 if !include_end_if_at_line_start && start.row != end.row && end.column == 0 {
5710 end.row -= 1;
5711 }
5712
5713 let buffer_start = map.prev_line_boundary(start).0;
5714 let buffer_end = map.next_line_boundary(end).0;
5715 buffer_start.row..buffer_end.row + 1
5716 }
5717}
5718
5719impl<T: InvalidationRegion> InvalidationStack<T> {
5720 fn invalidate<S>(&mut self, selections: &[Selection<S>], buffer: &MultiBufferSnapshot)
5721 where
5722 S: Clone + ToOffset,
5723 {
5724 while let Some(region) = self.last() {
5725 let all_selections_inside_invalidation_ranges =
5726 if selections.len() == region.ranges().len() {
5727 selections
5728 .iter()
5729 .zip(region.ranges().iter().map(|r| r.to_offset(&buffer)))
5730 .all(|(selection, invalidation_range)| {
5731 let head = selection.head().to_offset(&buffer);
5732 invalidation_range.start <= head && invalidation_range.end >= head
5733 })
5734 } else {
5735 false
5736 };
5737
5738 if all_selections_inside_invalidation_ranges {
5739 break;
5740 } else {
5741 self.pop();
5742 }
5743 }
5744 }
5745}
5746
5747impl<T> Default for InvalidationStack<T> {
5748 fn default() -> Self {
5749 Self(Default::default())
5750 }
5751}
5752
5753impl<T> Deref for InvalidationStack<T> {
5754 type Target = Vec<T>;
5755
5756 fn deref(&self) -> &Self::Target {
5757 &self.0
5758 }
5759}
5760
5761impl<T> DerefMut for InvalidationStack<T> {
5762 fn deref_mut(&mut self) -> &mut Self::Target {
5763 &mut self.0
5764 }
5765}
5766
5767impl InvalidationRegion for BracketPairState {
5768 fn ranges(&self) -> &[Range<Anchor>] {
5769 &self.ranges
5770 }
5771}
5772
5773impl InvalidationRegion for SnippetState {
5774 fn ranges(&self) -> &[Range<Anchor>] {
5775 &self.ranges[self.active_index]
5776 }
5777}
5778
5779impl Deref for EditorStyle {
5780 type Target = theme::Editor;
5781
5782 fn deref(&self) -> &Self::Target {
5783 &self.theme
5784 }
5785}
5786
5787pub fn diagnostic_block_renderer(
5788 diagnostic: Diagnostic,
5789 is_valid: bool,
5790 settings: watch::Receiver<Settings>,
5791) -> RenderBlock {
5792 let mut highlighted_lines = Vec::new();
5793 for line in diagnostic.message.lines() {
5794 highlighted_lines.push(highlight_diagnostic_message(line));
5795 }
5796
5797 Arc::new(move |cx: &BlockContext| {
5798 let settings = settings.borrow();
5799 let theme = &settings.theme.editor;
5800 let style = diagnostic_style(diagnostic.severity, is_valid, theme);
5801 let font_size = (style.text_scale_factor * settings.buffer_font_size).round();
5802 Flex::column()
5803 .with_children(highlighted_lines.iter().map(|(line, highlights)| {
5804 Label::new(
5805 line.clone(),
5806 style.message.clone().with_font_size(font_size),
5807 )
5808 .with_highlights(highlights.clone())
5809 .contained()
5810 .with_margin_left(cx.anchor_x)
5811 .boxed()
5812 }))
5813 .aligned()
5814 .left()
5815 .boxed()
5816 })
5817}
5818
5819pub fn highlight_diagnostic_message(message: &str) -> (String, Vec<usize>) {
5820 let mut message_without_backticks = String::new();
5821 let mut prev_offset = 0;
5822 let mut inside_block = false;
5823 let mut highlights = Vec::new();
5824 for (match_ix, (offset, _)) in message
5825 .match_indices('`')
5826 .chain([(message.len(), "")])
5827 .enumerate()
5828 {
5829 message_without_backticks.push_str(&message[prev_offset..offset]);
5830 if inside_block {
5831 highlights.extend(prev_offset - match_ix..offset - match_ix);
5832 }
5833
5834 inside_block = !inside_block;
5835 prev_offset = offset + 1;
5836 }
5837
5838 (message_without_backticks, highlights)
5839}
5840
5841pub fn diagnostic_style(
5842 severity: DiagnosticSeverity,
5843 valid: bool,
5844 theme: &theme::Editor,
5845) -> DiagnosticStyle {
5846 match (severity, valid) {
5847 (DiagnosticSeverity::ERROR, true) => theme.error_diagnostic.clone(),
5848 (DiagnosticSeverity::ERROR, false) => theme.invalid_error_diagnostic.clone(),
5849 (DiagnosticSeverity::WARNING, true) => theme.warning_diagnostic.clone(),
5850 (DiagnosticSeverity::WARNING, false) => theme.invalid_warning_diagnostic.clone(),
5851 (DiagnosticSeverity::INFORMATION, true) => theme.information_diagnostic.clone(),
5852 (DiagnosticSeverity::INFORMATION, false) => theme.invalid_information_diagnostic.clone(),
5853 (DiagnosticSeverity::HINT, true) => theme.hint_diagnostic.clone(),
5854 (DiagnosticSeverity::HINT, false) => theme.invalid_hint_diagnostic.clone(),
5855 _ => theme.invalid_hint_diagnostic.clone(),
5856 }
5857}
5858
5859pub fn combine_syntax_and_fuzzy_match_highlights(
5860 text: &str,
5861 default_style: HighlightStyle,
5862 syntax_ranges: impl Iterator<Item = (Range<usize>, HighlightStyle)>,
5863 match_indices: &[usize],
5864) -> Vec<(Range<usize>, HighlightStyle)> {
5865 let mut result = Vec::new();
5866 let mut match_indices = match_indices.iter().copied().peekable();
5867
5868 for (range, mut syntax_highlight) in syntax_ranges.chain([(usize::MAX..0, Default::default())])
5869 {
5870 syntax_highlight.font_properties.weight(Default::default());
5871
5872 // Add highlights for any fuzzy match characters before the next
5873 // syntax highlight range.
5874 while let Some(&match_index) = match_indices.peek() {
5875 if match_index >= range.start {
5876 break;
5877 }
5878 match_indices.next();
5879 let end_index = char_ix_after(match_index, text);
5880 let mut match_style = default_style;
5881 match_style.font_properties.weight(fonts::Weight::BOLD);
5882 result.push((match_index..end_index, match_style));
5883 }
5884
5885 if range.start == usize::MAX {
5886 break;
5887 }
5888
5889 // Add highlights for any fuzzy match characters within the
5890 // syntax highlight range.
5891 let mut offset = range.start;
5892 while let Some(&match_index) = match_indices.peek() {
5893 if match_index >= range.end {
5894 break;
5895 }
5896
5897 match_indices.next();
5898 if match_index > offset {
5899 result.push((offset..match_index, syntax_highlight));
5900 }
5901
5902 let mut end_index = char_ix_after(match_index, text);
5903 while let Some(&next_match_index) = match_indices.peek() {
5904 if next_match_index == end_index && next_match_index < range.end {
5905 end_index = char_ix_after(next_match_index, text);
5906 match_indices.next();
5907 } else {
5908 break;
5909 }
5910 }
5911
5912 let mut match_style = syntax_highlight;
5913 match_style.font_properties.weight(fonts::Weight::BOLD);
5914 result.push((match_index..end_index, match_style));
5915 offset = end_index;
5916 }
5917
5918 if offset < range.end {
5919 result.push((offset..range.end, syntax_highlight));
5920 }
5921 }
5922
5923 fn char_ix_after(ix: usize, text: &str) -> usize {
5924 ix + text[ix..].chars().next().unwrap().len_utf8()
5925 }
5926
5927 result
5928}
5929
5930pub fn styled_runs_for_code_label<'a>(
5931 label: &'a CodeLabel,
5932 default_color: Color,
5933 syntax_theme: &'a theme::SyntaxTheme,
5934) -> impl 'a + Iterator<Item = (Range<usize>, HighlightStyle)> {
5935 const MUTED_OPACITY: usize = 165;
5936
5937 let mut muted_default_style = HighlightStyle {
5938 color: default_color,
5939 ..Default::default()
5940 };
5941 muted_default_style.color.a = ((default_color.a as usize * MUTED_OPACITY) / 255) as u8;
5942
5943 let mut prev_end = label.filter_range.end;
5944 label
5945 .runs
5946 .iter()
5947 .enumerate()
5948 .flat_map(move |(ix, (range, highlight_id))| {
5949 let style = if let Some(style) = highlight_id.style(syntax_theme) {
5950 style
5951 } else {
5952 return Default::default();
5953 };
5954 let mut muted_style = style.clone();
5955 muted_style.color.a = ((style.color.a as usize * MUTED_OPACITY) / 255) as u8;
5956
5957 let mut runs = SmallVec::<[(Range<usize>, HighlightStyle); 3]>::new();
5958 if range.start >= label.filter_range.end {
5959 if range.start > prev_end {
5960 runs.push((prev_end..range.start, muted_default_style));
5961 }
5962 runs.push((range.clone(), muted_style));
5963 } else if range.end <= label.filter_range.end {
5964 runs.push((range.clone(), style));
5965 } else {
5966 runs.push((range.start..label.filter_range.end, style));
5967 runs.push((label.filter_range.end..range.end, muted_style));
5968 }
5969 prev_end = cmp::max(prev_end, range.end);
5970
5971 if ix + 1 == label.runs.len() && label.text.len() > prev_end {
5972 runs.push((prev_end..label.text.len(), muted_default_style));
5973 }
5974
5975 runs
5976 })
5977}
5978
5979#[cfg(test)]
5980mod tests {
5981 use super::*;
5982 use language::LanguageConfig;
5983 use lsp::FakeLanguageServer;
5984 use project::{FakeFs, ProjectPath};
5985 use smol::stream::StreamExt;
5986 use std::{cell::RefCell, rc::Rc, time::Instant};
5987 use text::Point;
5988 use unindent::Unindent;
5989 use util::test::sample_text;
5990
5991 #[gpui::test]
5992 fn test_undo_redo_with_selection_restoration(cx: &mut MutableAppContext) {
5993 let mut now = Instant::now();
5994 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
5995 let group_interval = buffer.read(cx).transaction_group_interval();
5996 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5997 let settings = Settings::test(cx);
5998 let (_, editor) = cx.add_window(Default::default(), |cx| {
5999 build_editor(buffer.clone(), settings, cx)
6000 });
6001
6002 editor.update(cx, |editor, cx| {
6003 editor.start_transaction_at(now, cx);
6004 editor.select_ranges([2..4], None, cx);
6005 editor.insert("cd", cx);
6006 editor.end_transaction_at(now, cx);
6007 assert_eq!(editor.text(cx), "12cd56");
6008 assert_eq!(editor.selected_ranges(cx), vec![4..4]);
6009
6010 editor.start_transaction_at(now, cx);
6011 editor.select_ranges([4..5], None, cx);
6012 editor.insert("e", cx);
6013 editor.end_transaction_at(now, cx);
6014 assert_eq!(editor.text(cx), "12cde6");
6015 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
6016
6017 now += group_interval + Duration::from_millis(1);
6018 editor.select_ranges([2..2], None, cx);
6019
6020 // Simulate an edit in another editor
6021 buffer.update(cx, |buffer, cx| {
6022 buffer.start_transaction_at(now, cx);
6023 buffer.edit([0..1], "a", cx);
6024 buffer.edit([1..1], "b", cx);
6025 buffer.end_transaction_at(now, cx);
6026 });
6027
6028 assert_eq!(editor.text(cx), "ab2cde6");
6029 assert_eq!(editor.selected_ranges(cx), vec![3..3]);
6030
6031 // Last transaction happened past the group interval in a different editor.
6032 // Undo it individually and don't restore selections.
6033 editor.undo(&Undo, cx);
6034 assert_eq!(editor.text(cx), "12cde6");
6035 assert_eq!(editor.selected_ranges(cx), vec![2..2]);
6036
6037 // First two transactions happened within the group interval in this editor.
6038 // Undo them together and restore selections.
6039 editor.undo(&Undo, cx);
6040 editor.undo(&Undo, cx); // Undo stack is empty here, so this is a no-op.
6041 assert_eq!(editor.text(cx), "123456");
6042 assert_eq!(editor.selected_ranges(cx), vec![0..0]);
6043
6044 // Redo the first two transactions together.
6045 editor.redo(&Redo, cx);
6046 assert_eq!(editor.text(cx), "12cde6");
6047 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
6048
6049 // Redo the last transaction on its own.
6050 editor.redo(&Redo, cx);
6051 assert_eq!(editor.text(cx), "ab2cde6");
6052 assert_eq!(editor.selected_ranges(cx), vec![6..6]);
6053
6054 // Test empty transactions.
6055 editor.start_transaction_at(now, cx);
6056 editor.end_transaction_at(now, cx);
6057 editor.undo(&Undo, cx);
6058 assert_eq!(editor.text(cx), "12cde6");
6059 });
6060 }
6061
6062 #[gpui::test]
6063 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
6064 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6065 let settings = Settings::test(cx);
6066 let (_, editor) =
6067 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6068
6069 editor.update(cx, |view, cx| {
6070 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
6071 });
6072
6073 assert_eq!(
6074 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6075 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
6076 );
6077
6078 editor.update(cx, |view, cx| {
6079 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6080 });
6081
6082 assert_eq!(
6083 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6084 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6085 );
6086
6087 editor.update(cx, |view, cx| {
6088 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6089 });
6090
6091 assert_eq!(
6092 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6093 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
6094 );
6095
6096 editor.update(cx, |view, cx| {
6097 view.end_selection(cx);
6098 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6099 });
6100
6101 assert_eq!(
6102 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6103 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
6104 );
6105
6106 editor.update(cx, |view, cx| {
6107 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
6108 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
6109 });
6110
6111 assert_eq!(
6112 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6113 [
6114 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
6115 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
6116 ]
6117 );
6118
6119 editor.update(cx, |view, cx| {
6120 view.end_selection(cx);
6121 });
6122
6123 assert_eq!(
6124 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6125 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
6126 );
6127 }
6128
6129 #[gpui::test]
6130 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
6131 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6132 let settings = Settings::test(cx);
6133 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6134
6135 view.update(cx, |view, cx| {
6136 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
6137 assert_eq!(
6138 view.selected_display_ranges(cx),
6139 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
6140 );
6141 });
6142
6143 view.update(cx, |view, cx| {
6144 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6145 assert_eq!(
6146 view.selected_display_ranges(cx),
6147 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6148 );
6149 });
6150
6151 view.update(cx, |view, cx| {
6152 view.cancel(&Cancel, cx);
6153 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6154 assert_eq!(
6155 view.selected_display_ranges(cx),
6156 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6157 );
6158 });
6159 }
6160
6161 #[gpui::test]
6162 fn test_navigation_history(cx: &mut gpui::MutableAppContext) {
6163 cx.add_window(Default::default(), |cx| {
6164 use workspace::ItemView;
6165 let nav_history = Rc::new(RefCell::new(workspace::NavHistory::default()));
6166 let settings = Settings::test(&cx);
6167 let buffer = MultiBuffer::build_simple(&sample_text(30, 5, 'a'), cx);
6168 let mut editor = build_editor(buffer.clone(), settings, cx);
6169 editor.nav_history = Some(ItemNavHistory::new(nav_history.clone(), &cx.handle()));
6170
6171 // Move the cursor a small distance.
6172 // Nothing is added to the navigation history.
6173 editor.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
6174 editor.select_display_ranges(&[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)], cx);
6175 assert!(nav_history.borrow_mut().pop_backward().is_none());
6176
6177 // Move the cursor a large distance.
6178 // The history can jump back to the previous position.
6179 editor.select_display_ranges(&[DisplayPoint::new(13, 0)..DisplayPoint::new(13, 3)], cx);
6180 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
6181 editor.navigate(nav_entry.data.unwrap(), cx);
6182 assert_eq!(nav_entry.item_view.id(), cx.view_id());
6183 assert_eq!(
6184 editor.selected_display_ranges(cx),
6185 &[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)]
6186 );
6187
6188 // Move the cursor a small distance via the mouse.
6189 // Nothing is added to the navigation history.
6190 editor.begin_selection(DisplayPoint::new(5, 0), false, 1, cx);
6191 editor.end_selection(cx);
6192 assert_eq!(
6193 editor.selected_display_ranges(cx),
6194 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
6195 );
6196 assert!(nav_history.borrow_mut().pop_backward().is_none());
6197
6198 // Move the cursor a large distance via the mouse.
6199 // The history can jump back to the previous position.
6200 editor.begin_selection(DisplayPoint::new(15, 0), false, 1, cx);
6201 editor.end_selection(cx);
6202 assert_eq!(
6203 editor.selected_display_ranges(cx),
6204 &[DisplayPoint::new(15, 0)..DisplayPoint::new(15, 0)]
6205 );
6206 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
6207 editor.navigate(nav_entry.data.unwrap(), cx);
6208 assert_eq!(nav_entry.item_view.id(), cx.view_id());
6209 assert_eq!(
6210 editor.selected_display_ranges(cx),
6211 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
6212 );
6213
6214 editor
6215 });
6216 }
6217
6218 #[gpui::test]
6219 fn test_cancel(cx: &mut gpui::MutableAppContext) {
6220 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6221 let settings = Settings::test(cx);
6222 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6223
6224 view.update(cx, |view, cx| {
6225 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
6226 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6227 view.end_selection(cx);
6228
6229 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
6230 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
6231 view.end_selection(cx);
6232 assert_eq!(
6233 view.selected_display_ranges(cx),
6234 [
6235 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
6236 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
6237 ]
6238 );
6239 });
6240
6241 view.update(cx, |view, cx| {
6242 view.cancel(&Cancel, cx);
6243 assert_eq!(
6244 view.selected_display_ranges(cx),
6245 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
6246 );
6247 });
6248
6249 view.update(cx, |view, cx| {
6250 view.cancel(&Cancel, cx);
6251 assert_eq!(
6252 view.selected_display_ranges(cx),
6253 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
6254 );
6255 });
6256 }
6257
6258 #[gpui::test]
6259 fn test_fold(cx: &mut gpui::MutableAppContext) {
6260 let buffer = MultiBuffer::build_simple(
6261 &"
6262 impl Foo {
6263 // Hello!
6264
6265 fn a() {
6266 1
6267 }
6268
6269 fn b() {
6270 2
6271 }
6272
6273 fn c() {
6274 3
6275 }
6276 }
6277 "
6278 .unindent(),
6279 cx,
6280 );
6281 let settings = Settings::test(&cx);
6282 let (_, view) = cx.add_window(Default::default(), |cx| {
6283 build_editor(buffer.clone(), settings, cx)
6284 });
6285
6286 view.update(cx, |view, cx| {
6287 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx);
6288 view.fold(&Fold, cx);
6289 assert_eq!(
6290 view.display_text(cx),
6291 "
6292 impl Foo {
6293 // Hello!
6294
6295 fn a() {
6296 1
6297 }
6298
6299 fn b() {…
6300 }
6301
6302 fn c() {…
6303 }
6304 }
6305 "
6306 .unindent(),
6307 );
6308
6309 view.fold(&Fold, cx);
6310 assert_eq!(
6311 view.display_text(cx),
6312 "
6313 impl Foo {…
6314 }
6315 "
6316 .unindent(),
6317 );
6318
6319 view.unfold(&Unfold, cx);
6320 assert_eq!(
6321 view.display_text(cx),
6322 "
6323 impl Foo {
6324 // Hello!
6325
6326 fn a() {
6327 1
6328 }
6329
6330 fn b() {…
6331 }
6332
6333 fn c() {…
6334 }
6335 }
6336 "
6337 .unindent(),
6338 );
6339
6340 view.unfold(&Unfold, cx);
6341 assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text());
6342 });
6343 }
6344
6345 #[gpui::test]
6346 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
6347 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
6348 let settings = Settings::test(&cx);
6349 let (_, view) = cx.add_window(Default::default(), |cx| {
6350 build_editor(buffer.clone(), settings, cx)
6351 });
6352
6353 buffer.update(cx, |buffer, cx| {
6354 buffer.edit(
6355 vec![
6356 Point::new(1, 0)..Point::new(1, 0),
6357 Point::new(1, 1)..Point::new(1, 1),
6358 ],
6359 "\t",
6360 cx,
6361 );
6362 });
6363
6364 view.update(cx, |view, cx| {
6365 assert_eq!(
6366 view.selected_display_ranges(cx),
6367 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6368 );
6369
6370 view.move_down(&MoveDown, cx);
6371 assert_eq!(
6372 view.selected_display_ranges(cx),
6373 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6374 );
6375
6376 view.move_right(&MoveRight, cx);
6377 assert_eq!(
6378 view.selected_display_ranges(cx),
6379 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
6380 );
6381
6382 view.move_left(&MoveLeft, cx);
6383 assert_eq!(
6384 view.selected_display_ranges(cx),
6385 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6386 );
6387
6388 view.move_up(&MoveUp, cx);
6389 assert_eq!(
6390 view.selected_display_ranges(cx),
6391 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6392 );
6393
6394 view.move_to_end(&MoveToEnd, cx);
6395 assert_eq!(
6396 view.selected_display_ranges(cx),
6397 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
6398 );
6399
6400 view.move_to_beginning(&MoveToBeginning, cx);
6401 assert_eq!(
6402 view.selected_display_ranges(cx),
6403 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6404 );
6405
6406 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx);
6407 view.select_to_beginning(&SelectToBeginning, cx);
6408 assert_eq!(
6409 view.selected_display_ranges(cx),
6410 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
6411 );
6412
6413 view.select_to_end(&SelectToEnd, cx);
6414 assert_eq!(
6415 view.selected_display_ranges(cx),
6416 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
6417 );
6418 });
6419 }
6420
6421 #[gpui::test]
6422 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
6423 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
6424 let settings = Settings::test(&cx);
6425 let (_, view) = cx.add_window(Default::default(), |cx| {
6426 build_editor(buffer.clone(), settings, cx)
6427 });
6428
6429 assert_eq!('ⓐ'.len_utf8(), 3);
6430 assert_eq!('α'.len_utf8(), 2);
6431
6432 view.update(cx, |view, cx| {
6433 view.fold_ranges(
6434 vec![
6435 Point::new(0, 6)..Point::new(0, 12),
6436 Point::new(1, 2)..Point::new(1, 4),
6437 Point::new(2, 4)..Point::new(2, 8),
6438 ],
6439 cx,
6440 );
6441 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
6442
6443 view.move_right(&MoveRight, cx);
6444 assert_eq!(
6445 view.selected_display_ranges(cx),
6446 &[empty_range(0, "ⓐ".len())]
6447 );
6448 view.move_right(&MoveRight, cx);
6449 assert_eq!(
6450 view.selected_display_ranges(cx),
6451 &[empty_range(0, "ⓐⓑ".len())]
6452 );
6453 view.move_right(&MoveRight, cx);
6454 assert_eq!(
6455 view.selected_display_ranges(cx),
6456 &[empty_range(0, "ⓐⓑ…".len())]
6457 );
6458
6459 view.move_down(&MoveDown, cx);
6460 assert_eq!(
6461 view.selected_display_ranges(cx),
6462 &[empty_range(1, "ab…".len())]
6463 );
6464 view.move_left(&MoveLeft, cx);
6465 assert_eq!(
6466 view.selected_display_ranges(cx),
6467 &[empty_range(1, "ab".len())]
6468 );
6469 view.move_left(&MoveLeft, cx);
6470 assert_eq!(
6471 view.selected_display_ranges(cx),
6472 &[empty_range(1, "a".len())]
6473 );
6474
6475 view.move_down(&MoveDown, cx);
6476 assert_eq!(
6477 view.selected_display_ranges(cx),
6478 &[empty_range(2, "α".len())]
6479 );
6480 view.move_right(&MoveRight, cx);
6481 assert_eq!(
6482 view.selected_display_ranges(cx),
6483 &[empty_range(2, "αβ".len())]
6484 );
6485 view.move_right(&MoveRight, cx);
6486 assert_eq!(
6487 view.selected_display_ranges(cx),
6488 &[empty_range(2, "αβ…".len())]
6489 );
6490 view.move_right(&MoveRight, cx);
6491 assert_eq!(
6492 view.selected_display_ranges(cx),
6493 &[empty_range(2, "αβ…ε".len())]
6494 );
6495
6496 view.move_up(&MoveUp, cx);
6497 assert_eq!(
6498 view.selected_display_ranges(cx),
6499 &[empty_range(1, "ab…e".len())]
6500 );
6501 view.move_up(&MoveUp, cx);
6502 assert_eq!(
6503 view.selected_display_ranges(cx),
6504 &[empty_range(0, "ⓐⓑ…ⓔ".len())]
6505 );
6506 view.move_left(&MoveLeft, cx);
6507 assert_eq!(
6508 view.selected_display_ranges(cx),
6509 &[empty_range(0, "ⓐⓑ…".len())]
6510 );
6511 view.move_left(&MoveLeft, cx);
6512 assert_eq!(
6513 view.selected_display_ranges(cx),
6514 &[empty_range(0, "ⓐⓑ".len())]
6515 );
6516 view.move_left(&MoveLeft, cx);
6517 assert_eq!(
6518 view.selected_display_ranges(cx),
6519 &[empty_range(0, "ⓐ".len())]
6520 );
6521 });
6522 }
6523
6524 #[gpui::test]
6525 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
6526 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
6527 let settings = Settings::test(&cx);
6528 let (_, view) = cx.add_window(Default::default(), |cx| {
6529 build_editor(buffer.clone(), settings, cx)
6530 });
6531 view.update(cx, |view, cx| {
6532 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx);
6533 view.move_down(&MoveDown, cx);
6534 assert_eq!(
6535 view.selected_display_ranges(cx),
6536 &[empty_range(1, "abcd".len())]
6537 );
6538
6539 view.move_down(&MoveDown, cx);
6540 assert_eq!(
6541 view.selected_display_ranges(cx),
6542 &[empty_range(2, "αβγ".len())]
6543 );
6544
6545 view.move_down(&MoveDown, cx);
6546 assert_eq!(
6547 view.selected_display_ranges(cx),
6548 &[empty_range(3, "abcd".len())]
6549 );
6550
6551 view.move_down(&MoveDown, cx);
6552 assert_eq!(
6553 view.selected_display_ranges(cx),
6554 &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
6555 );
6556
6557 view.move_up(&MoveUp, cx);
6558 assert_eq!(
6559 view.selected_display_ranges(cx),
6560 &[empty_range(3, "abcd".len())]
6561 );
6562
6563 view.move_up(&MoveUp, cx);
6564 assert_eq!(
6565 view.selected_display_ranges(cx),
6566 &[empty_range(2, "αβγ".len())]
6567 );
6568 });
6569 }
6570
6571 #[gpui::test]
6572 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
6573 let buffer = MultiBuffer::build_simple("abc\n def", cx);
6574 let settings = Settings::test(&cx);
6575 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6576 view.update(cx, |view, cx| {
6577 view.select_display_ranges(
6578 &[
6579 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6580 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
6581 ],
6582 cx,
6583 );
6584 });
6585
6586 view.update(cx, |view, cx| {
6587 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6588 assert_eq!(
6589 view.selected_display_ranges(cx),
6590 &[
6591 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6592 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6593 ]
6594 );
6595 });
6596
6597 view.update(cx, |view, cx| {
6598 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6599 assert_eq!(
6600 view.selected_display_ranges(cx),
6601 &[
6602 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6603 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6604 ]
6605 );
6606 });
6607
6608 view.update(cx, |view, cx| {
6609 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6610 assert_eq!(
6611 view.selected_display_ranges(cx),
6612 &[
6613 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6614 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6615 ]
6616 );
6617 });
6618
6619 view.update(cx, |view, cx| {
6620 view.move_to_end_of_line(&MoveToEndOfLine, cx);
6621 assert_eq!(
6622 view.selected_display_ranges(cx),
6623 &[
6624 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6625 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6626 ]
6627 );
6628 });
6629
6630 // Moving to the end of line again is a no-op.
6631 view.update(cx, |view, cx| {
6632 view.move_to_end_of_line(&MoveToEndOfLine, cx);
6633 assert_eq!(
6634 view.selected_display_ranges(cx),
6635 &[
6636 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6637 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6638 ]
6639 );
6640 });
6641
6642 view.update(cx, |view, cx| {
6643 view.move_left(&MoveLeft, cx);
6644 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6645 assert_eq!(
6646 view.selected_display_ranges(cx),
6647 &[
6648 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6649 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
6650 ]
6651 );
6652 });
6653
6654 view.update(cx, |view, cx| {
6655 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6656 assert_eq!(
6657 view.selected_display_ranges(cx),
6658 &[
6659 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6660 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
6661 ]
6662 );
6663 });
6664
6665 view.update(cx, |view, cx| {
6666 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6667 assert_eq!(
6668 view.selected_display_ranges(cx),
6669 &[
6670 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6671 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
6672 ]
6673 );
6674 });
6675
6676 view.update(cx, |view, cx| {
6677 view.select_to_end_of_line(&SelectToEndOfLine(true), cx);
6678 assert_eq!(
6679 view.selected_display_ranges(cx),
6680 &[
6681 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
6682 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
6683 ]
6684 );
6685 });
6686
6687 view.update(cx, |view, cx| {
6688 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
6689 assert_eq!(view.display_text(cx), "ab\n de");
6690 assert_eq!(
6691 view.selected_display_ranges(cx),
6692 &[
6693 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6694 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
6695 ]
6696 );
6697 });
6698
6699 view.update(cx, |view, cx| {
6700 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
6701 assert_eq!(view.display_text(cx), "\n");
6702 assert_eq!(
6703 view.selected_display_ranges(cx),
6704 &[
6705 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6706 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6707 ]
6708 );
6709 });
6710 }
6711
6712 #[gpui::test]
6713 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
6714 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
6715 let settings = Settings::test(&cx);
6716 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6717 view.update(cx, |view, cx| {
6718 view.select_display_ranges(
6719 &[
6720 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
6721 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
6722 ],
6723 cx,
6724 );
6725 });
6726
6727 view.update(cx, |view, cx| {
6728 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6729 assert_eq!(
6730 view.selected_display_ranges(cx),
6731 &[
6732 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
6733 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
6734 ]
6735 );
6736 });
6737
6738 view.update(cx, |view, cx| {
6739 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6740 assert_eq!(
6741 view.selected_display_ranges(cx),
6742 &[
6743 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
6744 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2),
6745 ]
6746 );
6747 });
6748
6749 view.update(cx, |view, cx| {
6750 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6751 assert_eq!(
6752 view.selected_display_ranges(cx),
6753 &[
6754 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
6755 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
6756 ]
6757 );
6758 });
6759
6760 view.update(cx, |view, cx| {
6761 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6762 assert_eq!(
6763 view.selected_display_ranges(cx),
6764 &[
6765 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6766 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6767 ]
6768 );
6769 });
6770
6771 view.update(cx, |view, cx| {
6772 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6773 assert_eq!(
6774 view.selected_display_ranges(cx),
6775 &[
6776 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6777 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 23),
6778 ]
6779 );
6780 });
6781
6782 view.update(cx, |view, cx| {
6783 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6784 assert_eq!(
6785 view.selected_display_ranges(cx),
6786 &[
6787 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6788 DisplayPoint::new(0, 24)..DisplayPoint::new(0, 24),
6789 ]
6790 );
6791 });
6792
6793 view.update(cx, |view, cx| {
6794 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6795 assert_eq!(
6796 view.selected_display_ranges(cx),
6797 &[
6798 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
6799 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6800 ]
6801 );
6802 });
6803
6804 view.update(cx, |view, cx| {
6805 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6806 assert_eq!(
6807 view.selected_display_ranges(cx),
6808 &[
6809 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
6810 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
6811 ]
6812 );
6813 });
6814
6815 view.update(cx, |view, cx| {
6816 view.move_right(&MoveRight, cx);
6817 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
6818 assert_eq!(
6819 view.selected_display_ranges(cx),
6820 &[
6821 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
6822 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
6823 ]
6824 );
6825 });
6826
6827 view.update(cx, |view, cx| {
6828 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
6829 assert_eq!(
6830 view.selected_display_ranges(cx),
6831 &[
6832 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 7),
6833 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 2),
6834 ]
6835 );
6836 });
6837
6838 view.update(cx, |view, cx| {
6839 view.select_to_next_word_boundary(&SelectToNextWordBoundary, cx);
6840 assert_eq!(
6841 view.selected_display_ranges(cx),
6842 &[
6843 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
6844 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
6845 ]
6846 );
6847 });
6848 }
6849
6850 #[gpui::test]
6851 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
6852 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
6853 let settings = Settings::test(&cx);
6854 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6855
6856 view.update(cx, |view, cx| {
6857 view.set_wrap_width(Some(140.), cx);
6858 assert_eq!(
6859 view.display_text(cx),
6860 "use one::{\n two::three::\n four::five\n};"
6861 );
6862
6863 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx);
6864
6865 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6866 assert_eq!(
6867 view.selected_display_ranges(cx),
6868 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
6869 );
6870
6871 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6872 assert_eq!(
6873 view.selected_display_ranges(cx),
6874 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
6875 );
6876
6877 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6878 assert_eq!(
6879 view.selected_display_ranges(cx),
6880 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
6881 );
6882
6883 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6884 assert_eq!(
6885 view.selected_display_ranges(cx),
6886 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
6887 );
6888
6889 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6890 assert_eq!(
6891 view.selected_display_ranges(cx),
6892 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
6893 );
6894
6895 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6896 assert_eq!(
6897 view.selected_display_ranges(cx),
6898 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
6899 );
6900 });
6901 }
6902
6903 #[gpui::test]
6904 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
6905 let buffer = MultiBuffer::build_simple("one two three four", cx);
6906 let settings = Settings::test(&cx);
6907 let (_, view) = cx.add_window(Default::default(), |cx| {
6908 build_editor(buffer.clone(), settings, cx)
6909 });
6910
6911 view.update(cx, |view, cx| {
6912 view.select_display_ranges(
6913 &[
6914 // an empty selection - the preceding word fragment is deleted
6915 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6916 // characters selected - they are deleted
6917 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
6918 ],
6919 cx,
6920 );
6921 view.delete_to_previous_word_boundary(&DeleteToPreviousWordBoundary, cx);
6922 });
6923
6924 assert_eq!(buffer.read(cx).read(cx).text(), "e two te four");
6925
6926 view.update(cx, |view, cx| {
6927 view.select_display_ranges(
6928 &[
6929 // an empty selection - the following word fragment is deleted
6930 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6931 // characters selected - they are deleted
6932 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
6933 ],
6934 cx,
6935 );
6936 view.delete_to_next_word_boundary(&DeleteToNextWordBoundary, cx);
6937 });
6938
6939 assert_eq!(buffer.read(cx).read(cx).text(), "e t te our");
6940 }
6941
6942 #[gpui::test]
6943 fn test_newline(cx: &mut gpui::MutableAppContext) {
6944 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
6945 let settings = Settings::test(&cx);
6946 let (_, view) = cx.add_window(Default::default(), |cx| {
6947 build_editor(buffer.clone(), settings, cx)
6948 });
6949
6950 view.update(cx, |view, cx| {
6951 view.select_display_ranges(
6952 &[
6953 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6954 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6955 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
6956 ],
6957 cx,
6958 );
6959
6960 view.newline(&Newline, cx);
6961 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
6962 });
6963 }
6964
6965 #[gpui::test]
6966 fn test_newline_with_old_selections(cx: &mut gpui::MutableAppContext) {
6967 let buffer = MultiBuffer::build_simple(
6968 "
6969 a
6970 b(
6971 X
6972 )
6973 c(
6974 X
6975 )
6976 "
6977 .unindent()
6978 .as_str(),
6979 cx,
6980 );
6981
6982 let settings = Settings::test(&cx);
6983 let (_, editor) = cx.add_window(Default::default(), |cx| {
6984 let mut editor = build_editor(buffer.clone(), settings, cx);
6985 editor.select_ranges(
6986 [
6987 Point::new(2, 4)..Point::new(2, 5),
6988 Point::new(5, 4)..Point::new(5, 5),
6989 ],
6990 None,
6991 cx,
6992 );
6993 editor
6994 });
6995
6996 // Edit the buffer directly, deleting ranges surrounding the editor's selections
6997 buffer.update(cx, |buffer, cx| {
6998 buffer.edit(
6999 [
7000 Point::new(1, 2)..Point::new(3, 0),
7001 Point::new(4, 2)..Point::new(6, 0),
7002 ],
7003 "",
7004 cx,
7005 );
7006 assert_eq!(
7007 buffer.read(cx).text(),
7008 "
7009 a
7010 b()
7011 c()
7012 "
7013 .unindent()
7014 );
7015 });
7016
7017 editor.update(cx, |editor, cx| {
7018 assert_eq!(
7019 editor.selected_ranges(cx),
7020 &[
7021 Point::new(1, 2)..Point::new(1, 2),
7022 Point::new(2, 2)..Point::new(2, 2),
7023 ],
7024 );
7025
7026 editor.newline(&Newline, cx);
7027 assert_eq!(
7028 editor.text(cx),
7029 "
7030 a
7031 b(
7032 )
7033 c(
7034 )
7035 "
7036 .unindent()
7037 );
7038
7039 // The selections are moved after the inserted newlines
7040 assert_eq!(
7041 editor.selected_ranges(cx),
7042 &[
7043 Point::new(2, 0)..Point::new(2, 0),
7044 Point::new(4, 0)..Point::new(4, 0),
7045 ],
7046 );
7047 });
7048 }
7049
7050 #[gpui::test]
7051 fn test_insert_with_old_selections(cx: &mut gpui::MutableAppContext) {
7052 let buffer = MultiBuffer::build_simple("a( X ), b( Y ), c( Z )", cx);
7053
7054 let settings = Settings::test(&cx);
7055 let (_, editor) = cx.add_window(Default::default(), |cx| {
7056 let mut editor = build_editor(buffer.clone(), settings, cx);
7057 editor.select_ranges([3..4, 11..12, 19..20], None, cx);
7058 editor
7059 });
7060
7061 // Edit the buffer directly, deleting ranges surrounding the editor's selections
7062 buffer.update(cx, |buffer, cx| {
7063 buffer.edit([2..5, 10..13, 18..21], "", cx);
7064 assert_eq!(buffer.read(cx).text(), "a(), b(), c()".unindent());
7065 });
7066
7067 editor.update(cx, |editor, cx| {
7068 assert_eq!(editor.selected_ranges(cx), &[2..2, 7..7, 12..12],);
7069
7070 editor.insert("Z", cx);
7071 assert_eq!(editor.text(cx), "a(Z), b(Z), c(Z)");
7072
7073 // The selections are moved after the inserted characters
7074 assert_eq!(editor.selected_ranges(cx), &[3..3, 9..9, 15..15],);
7075 });
7076 }
7077
7078 #[gpui::test]
7079 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
7080 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
7081 let settings = Settings::test(&cx);
7082 let (_, view) = cx.add_window(Default::default(), |cx| {
7083 build_editor(buffer.clone(), settings, cx)
7084 });
7085
7086 view.update(cx, |view, cx| {
7087 // two selections on the same line
7088 view.select_display_ranges(
7089 &[
7090 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
7091 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
7092 ],
7093 cx,
7094 );
7095
7096 // indent from mid-tabstop to full tabstop
7097 view.tab(&Tab, cx);
7098 assert_eq!(view.text(cx), " one two\nthree\n four");
7099 assert_eq!(
7100 view.selected_display_ranges(cx),
7101 &[
7102 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
7103 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
7104 ]
7105 );
7106
7107 // outdent from 1 tabstop to 0 tabstops
7108 view.outdent(&Outdent, cx);
7109 assert_eq!(view.text(cx), "one two\nthree\n four");
7110 assert_eq!(
7111 view.selected_display_ranges(cx),
7112 &[
7113 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
7114 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
7115 ]
7116 );
7117
7118 // select across line ending
7119 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx);
7120
7121 // indent and outdent affect only the preceding line
7122 view.tab(&Tab, cx);
7123 assert_eq!(view.text(cx), "one two\n three\n four");
7124 assert_eq!(
7125 view.selected_display_ranges(cx),
7126 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
7127 );
7128 view.outdent(&Outdent, cx);
7129 assert_eq!(view.text(cx), "one two\nthree\n four");
7130 assert_eq!(
7131 view.selected_display_ranges(cx),
7132 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
7133 );
7134
7135 // Ensure that indenting/outdenting works when the cursor is at column 0.
7136 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
7137 view.tab(&Tab, cx);
7138 assert_eq!(view.text(cx), "one two\n three\n four");
7139 assert_eq!(
7140 view.selected_display_ranges(cx),
7141 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
7142 );
7143
7144 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
7145 view.outdent(&Outdent, cx);
7146 assert_eq!(view.text(cx), "one two\nthree\n four");
7147 assert_eq!(
7148 view.selected_display_ranges(cx),
7149 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
7150 );
7151 });
7152 }
7153
7154 #[gpui::test]
7155 fn test_backspace(cx: &mut gpui::MutableAppContext) {
7156 let buffer =
7157 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
7158 let settings = Settings::test(&cx);
7159 let (_, view) = cx.add_window(Default::default(), |cx| {
7160 build_editor(buffer.clone(), settings, cx)
7161 });
7162
7163 view.update(cx, |view, cx| {
7164 view.select_display_ranges(
7165 &[
7166 // an empty selection - the preceding character is deleted
7167 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7168 // one character selected - it is deleted
7169 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7170 // a line suffix selected - it is deleted
7171 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
7172 ],
7173 cx,
7174 );
7175 view.backspace(&Backspace, cx);
7176 });
7177
7178 assert_eq!(
7179 buffer.read(cx).read(cx).text(),
7180 "oe two three\nfou five six\nseven ten\n"
7181 );
7182 }
7183
7184 #[gpui::test]
7185 fn test_delete(cx: &mut gpui::MutableAppContext) {
7186 let buffer =
7187 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
7188 let settings = Settings::test(&cx);
7189 let (_, view) = cx.add_window(Default::default(), |cx| {
7190 build_editor(buffer.clone(), settings, cx)
7191 });
7192
7193 view.update(cx, |view, cx| {
7194 view.select_display_ranges(
7195 &[
7196 // an empty selection - the following character is deleted
7197 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7198 // one character selected - it is deleted
7199 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7200 // a line suffix selected - it is deleted
7201 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
7202 ],
7203 cx,
7204 );
7205 view.delete(&Delete, cx);
7206 });
7207
7208 assert_eq!(
7209 buffer.read(cx).read(cx).text(),
7210 "on two three\nfou five six\nseven ten\n"
7211 );
7212 }
7213
7214 #[gpui::test]
7215 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
7216 let settings = Settings::test(&cx);
7217 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7218 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7219 view.update(cx, |view, cx| {
7220 view.select_display_ranges(
7221 &[
7222 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7223 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
7224 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7225 ],
7226 cx,
7227 );
7228 view.delete_line(&DeleteLine, cx);
7229 assert_eq!(view.display_text(cx), "ghi");
7230 assert_eq!(
7231 view.selected_display_ranges(cx),
7232 vec![
7233 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7234 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
7235 ]
7236 );
7237 });
7238
7239 let settings = Settings::test(&cx);
7240 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7241 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7242 view.update(cx, |view, cx| {
7243 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx);
7244 view.delete_line(&DeleteLine, cx);
7245 assert_eq!(view.display_text(cx), "ghi\n");
7246 assert_eq!(
7247 view.selected_display_ranges(cx),
7248 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
7249 );
7250 });
7251 }
7252
7253 #[gpui::test]
7254 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
7255 let settings = Settings::test(&cx);
7256 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7257 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7258 view.update(cx, |view, cx| {
7259 view.select_display_ranges(
7260 &[
7261 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7262 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7263 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7264 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7265 ],
7266 cx,
7267 );
7268 view.duplicate_line(&DuplicateLine, cx);
7269 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
7270 assert_eq!(
7271 view.selected_display_ranges(cx),
7272 vec![
7273 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
7274 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7275 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7276 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
7277 ]
7278 );
7279 });
7280
7281 let settings = Settings::test(&cx);
7282 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7283 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7284 view.update(cx, |view, cx| {
7285 view.select_display_ranges(
7286 &[
7287 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
7288 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
7289 ],
7290 cx,
7291 );
7292 view.duplicate_line(&DuplicateLine, cx);
7293 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
7294 assert_eq!(
7295 view.selected_display_ranges(cx),
7296 vec![
7297 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
7298 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
7299 ]
7300 );
7301 });
7302 }
7303
7304 #[gpui::test]
7305 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
7306 let settings = Settings::test(&cx);
7307 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
7308 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7309 view.update(cx, |view, cx| {
7310 view.fold_ranges(
7311 vec![
7312 Point::new(0, 2)..Point::new(1, 2),
7313 Point::new(2, 3)..Point::new(4, 1),
7314 Point::new(7, 0)..Point::new(8, 4),
7315 ],
7316 cx,
7317 );
7318 view.select_display_ranges(
7319 &[
7320 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7321 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7322 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7323 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
7324 ],
7325 cx,
7326 );
7327 assert_eq!(
7328 view.display_text(cx),
7329 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
7330 );
7331
7332 view.move_line_up(&MoveLineUp, cx);
7333 assert_eq!(
7334 view.display_text(cx),
7335 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
7336 );
7337 assert_eq!(
7338 view.selected_display_ranges(cx),
7339 vec![
7340 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7341 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7342 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
7343 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
7344 ]
7345 );
7346 });
7347
7348 view.update(cx, |view, cx| {
7349 view.move_line_down(&MoveLineDown, cx);
7350 assert_eq!(
7351 view.display_text(cx),
7352 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
7353 );
7354 assert_eq!(
7355 view.selected_display_ranges(cx),
7356 vec![
7357 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7358 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7359 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7360 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
7361 ]
7362 );
7363 });
7364
7365 view.update(cx, |view, cx| {
7366 view.move_line_down(&MoveLineDown, cx);
7367 assert_eq!(
7368 view.display_text(cx),
7369 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
7370 );
7371 assert_eq!(
7372 view.selected_display_ranges(cx),
7373 vec![
7374 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7375 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7376 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7377 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
7378 ]
7379 );
7380 });
7381
7382 view.update(cx, |view, cx| {
7383 view.move_line_up(&MoveLineUp, cx);
7384 assert_eq!(
7385 view.display_text(cx),
7386 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
7387 );
7388 assert_eq!(
7389 view.selected_display_ranges(cx),
7390 vec![
7391 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7392 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7393 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
7394 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
7395 ]
7396 );
7397 });
7398 }
7399
7400 #[gpui::test]
7401 fn test_move_line_up_down_with_blocks(cx: &mut gpui::MutableAppContext) {
7402 let settings = Settings::test(&cx);
7403 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
7404 let snapshot = buffer.read(cx).snapshot(cx);
7405 let (_, editor) =
7406 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7407 editor.update(cx, |editor, cx| {
7408 editor.insert_blocks(
7409 [BlockProperties {
7410 position: snapshot.anchor_after(Point::new(2, 0)),
7411 disposition: BlockDisposition::Below,
7412 height: 1,
7413 render: Arc::new(|_| Empty::new().boxed()),
7414 }],
7415 cx,
7416 );
7417 editor.select_ranges([Point::new(2, 0)..Point::new(2, 0)], None, cx);
7418 editor.move_line_down(&MoveLineDown, cx);
7419 });
7420 }
7421
7422 #[gpui::test]
7423 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
7424 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
7425 let settings = Settings::test(&cx);
7426 let view = cx
7427 .add_window(Default::default(), |cx| {
7428 build_editor(buffer.clone(), settings, cx)
7429 })
7430 .1;
7431
7432 // Cut with three selections. Clipboard text is divided into three slices.
7433 view.update(cx, |view, cx| {
7434 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
7435 view.cut(&Cut, cx);
7436 assert_eq!(view.display_text(cx), "two four six ");
7437 });
7438
7439 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
7440 view.update(cx, |view, cx| {
7441 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
7442 view.paste(&Paste, cx);
7443 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
7444 assert_eq!(
7445 view.selected_display_ranges(cx),
7446 &[
7447 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
7448 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
7449 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
7450 ]
7451 );
7452 });
7453
7454 // Paste again but with only two cursors. Since the number of cursors doesn't
7455 // match the number of slices in the clipboard, the entire clipboard text
7456 // is pasted at each cursor.
7457 view.update(cx, |view, cx| {
7458 view.select_ranges(vec![0..0, 31..31], None, cx);
7459 view.handle_input(&Input("( ".into()), cx);
7460 view.paste(&Paste, cx);
7461 view.handle_input(&Input(") ".into()), cx);
7462 assert_eq!(
7463 view.display_text(cx),
7464 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7465 );
7466 });
7467
7468 view.update(cx, |view, cx| {
7469 view.select_ranges(vec![0..0], None, cx);
7470 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
7471 assert_eq!(
7472 view.display_text(cx),
7473 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7474 );
7475 });
7476
7477 // Cut with three selections, one of which is full-line.
7478 view.update(cx, |view, cx| {
7479 view.select_display_ranges(
7480 &[
7481 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
7482 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7483 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
7484 ],
7485 cx,
7486 );
7487 view.cut(&Cut, cx);
7488 assert_eq!(
7489 view.display_text(cx),
7490 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7491 );
7492 });
7493
7494 // Paste with three selections, noticing how the copied selection that was full-line
7495 // gets inserted before the second cursor.
7496 view.update(cx, |view, cx| {
7497 view.select_display_ranges(
7498 &[
7499 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7500 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7501 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
7502 ],
7503 cx,
7504 );
7505 view.paste(&Paste, cx);
7506 assert_eq!(
7507 view.display_text(cx),
7508 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
7509 );
7510 assert_eq!(
7511 view.selected_display_ranges(cx),
7512 &[
7513 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7514 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7515 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
7516 ]
7517 );
7518 });
7519
7520 // Copy with a single cursor only, which writes the whole line into the clipboard.
7521 view.update(cx, |view, cx| {
7522 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx);
7523 view.copy(&Copy, cx);
7524 });
7525
7526 // Paste with three selections, noticing how the copied full-line selection is inserted
7527 // before the empty selections but replaces the selection that is non-empty.
7528 view.update(cx, |view, cx| {
7529 view.select_display_ranges(
7530 &[
7531 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7532 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
7533 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7534 ],
7535 cx,
7536 );
7537 view.paste(&Paste, cx);
7538 assert_eq!(
7539 view.display_text(cx),
7540 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
7541 );
7542 assert_eq!(
7543 view.selected_display_ranges(cx),
7544 &[
7545 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7546 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7547 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
7548 ]
7549 );
7550 });
7551 }
7552
7553 #[gpui::test]
7554 fn test_select_all(cx: &mut gpui::MutableAppContext) {
7555 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
7556 let settings = Settings::test(&cx);
7557 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7558 view.update(cx, |view, cx| {
7559 view.select_all(&SelectAll, cx);
7560 assert_eq!(
7561 view.selected_display_ranges(cx),
7562 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
7563 );
7564 });
7565 }
7566
7567 #[gpui::test]
7568 fn test_select_line(cx: &mut gpui::MutableAppContext) {
7569 let settings = Settings::test(&cx);
7570 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
7571 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7572 view.update(cx, |view, cx| {
7573 view.select_display_ranges(
7574 &[
7575 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7576 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7577 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7578 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
7579 ],
7580 cx,
7581 );
7582 view.select_line(&SelectLine, cx);
7583 assert_eq!(
7584 view.selected_display_ranges(cx),
7585 vec![
7586 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
7587 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
7588 ]
7589 );
7590 });
7591
7592 view.update(cx, |view, cx| {
7593 view.select_line(&SelectLine, cx);
7594 assert_eq!(
7595 view.selected_display_ranges(cx),
7596 vec![
7597 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
7598 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
7599 ]
7600 );
7601 });
7602
7603 view.update(cx, |view, cx| {
7604 view.select_line(&SelectLine, cx);
7605 assert_eq!(
7606 view.selected_display_ranges(cx),
7607 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
7608 );
7609 });
7610 }
7611
7612 #[gpui::test]
7613 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
7614 let settings = Settings::test(&cx);
7615 let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
7616 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7617 view.update(cx, |view, cx| {
7618 view.fold_ranges(
7619 vec![
7620 Point::new(0, 2)..Point::new(1, 2),
7621 Point::new(2, 3)..Point::new(4, 1),
7622 Point::new(7, 0)..Point::new(8, 4),
7623 ],
7624 cx,
7625 );
7626 view.select_display_ranges(
7627 &[
7628 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7629 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7630 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7631 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
7632 ],
7633 cx,
7634 );
7635 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
7636 });
7637
7638 view.update(cx, |view, cx| {
7639 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
7640 assert_eq!(
7641 view.display_text(cx),
7642 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
7643 );
7644 assert_eq!(
7645 view.selected_display_ranges(cx),
7646 [
7647 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7648 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7649 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
7650 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
7651 ]
7652 );
7653 });
7654
7655 view.update(cx, |view, cx| {
7656 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx);
7657 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
7658 assert_eq!(
7659 view.display_text(cx),
7660 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
7661 );
7662 assert_eq!(
7663 view.selected_display_ranges(cx),
7664 [
7665 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
7666 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
7667 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7668 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
7669 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
7670 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
7671 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
7672 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
7673 ]
7674 );
7675 });
7676 }
7677
7678 #[gpui::test]
7679 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
7680 let settings = Settings::test(&cx);
7681 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
7682 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7683
7684 view.update(cx, |view, cx| {
7685 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx);
7686 });
7687 view.update(cx, |view, cx| {
7688 view.add_selection_above(&AddSelectionAbove, cx);
7689 assert_eq!(
7690 view.selected_display_ranges(cx),
7691 vec![
7692 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7693 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
7694 ]
7695 );
7696 });
7697
7698 view.update(cx, |view, cx| {
7699 view.add_selection_above(&AddSelectionAbove, cx);
7700 assert_eq!(
7701 view.selected_display_ranges(cx),
7702 vec![
7703 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7704 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
7705 ]
7706 );
7707 });
7708
7709 view.update(cx, |view, cx| {
7710 view.add_selection_below(&AddSelectionBelow, cx);
7711 assert_eq!(
7712 view.selected_display_ranges(cx),
7713 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
7714 );
7715 });
7716
7717 view.update(cx, |view, cx| {
7718 view.add_selection_below(&AddSelectionBelow, cx);
7719 assert_eq!(
7720 view.selected_display_ranges(cx),
7721 vec![
7722 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7723 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
7724 ]
7725 );
7726 });
7727
7728 view.update(cx, |view, cx| {
7729 view.add_selection_below(&AddSelectionBelow, cx);
7730 assert_eq!(
7731 view.selected_display_ranges(cx),
7732 vec![
7733 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7734 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
7735 ]
7736 );
7737 });
7738
7739 view.update(cx, |view, cx| {
7740 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx);
7741 });
7742 view.update(cx, |view, cx| {
7743 view.add_selection_below(&AddSelectionBelow, cx);
7744 assert_eq!(
7745 view.selected_display_ranges(cx),
7746 vec![
7747 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7748 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
7749 ]
7750 );
7751 });
7752
7753 view.update(cx, |view, cx| {
7754 view.add_selection_below(&AddSelectionBelow, cx);
7755 assert_eq!(
7756 view.selected_display_ranges(cx),
7757 vec![
7758 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7759 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
7760 ]
7761 );
7762 });
7763
7764 view.update(cx, |view, cx| {
7765 view.add_selection_above(&AddSelectionAbove, cx);
7766 assert_eq!(
7767 view.selected_display_ranges(cx),
7768 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
7769 );
7770 });
7771
7772 view.update(cx, |view, cx| {
7773 view.add_selection_above(&AddSelectionAbove, cx);
7774 assert_eq!(
7775 view.selected_display_ranges(cx),
7776 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
7777 );
7778 });
7779
7780 view.update(cx, |view, cx| {
7781 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx);
7782 view.add_selection_below(&AddSelectionBelow, cx);
7783 assert_eq!(
7784 view.selected_display_ranges(cx),
7785 vec![
7786 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7787 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7788 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7789 ]
7790 );
7791 });
7792
7793 view.update(cx, |view, cx| {
7794 view.add_selection_below(&AddSelectionBelow, cx);
7795 assert_eq!(
7796 view.selected_display_ranges(cx),
7797 vec![
7798 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7799 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7800 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7801 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
7802 ]
7803 );
7804 });
7805
7806 view.update(cx, |view, cx| {
7807 view.add_selection_above(&AddSelectionAbove, cx);
7808 assert_eq!(
7809 view.selected_display_ranges(cx),
7810 vec![
7811 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7812 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7813 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7814 ]
7815 );
7816 });
7817
7818 view.update(cx, |view, cx| {
7819 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx);
7820 });
7821 view.update(cx, |view, cx| {
7822 view.add_selection_above(&AddSelectionAbove, cx);
7823 assert_eq!(
7824 view.selected_display_ranges(cx),
7825 vec![
7826 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
7827 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
7828 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
7829 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
7830 ]
7831 );
7832 });
7833
7834 view.update(cx, |view, cx| {
7835 view.add_selection_below(&AddSelectionBelow, cx);
7836 assert_eq!(
7837 view.selected_display_ranges(cx),
7838 vec![
7839 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
7840 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
7841 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
7842 ]
7843 );
7844 });
7845 }
7846
7847 #[gpui::test]
7848 async fn test_select_larger_smaller_syntax_node(cx: &mut gpui::TestAppContext) {
7849 let settings = cx.read(Settings::test);
7850 let language = Arc::new(Language::new(
7851 LanguageConfig::default(),
7852 Some(tree_sitter_rust::language()),
7853 ));
7854
7855 let text = r#"
7856 use mod1::mod2::{mod3, mod4};
7857
7858 fn fn_1(param1: bool, param2: &str) {
7859 let var1 = "text";
7860 }
7861 "#
7862 .unindent();
7863
7864 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7865 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7866 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7867 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
7868 .await;
7869
7870 view.update(cx, |view, cx| {
7871 view.select_display_ranges(
7872 &[
7873 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7874 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7875 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7876 ],
7877 cx,
7878 );
7879 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7880 });
7881 assert_eq!(
7882 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7883 &[
7884 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
7885 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7886 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
7887 ]
7888 );
7889
7890 view.update(cx, |view, cx| {
7891 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7892 });
7893 assert_eq!(
7894 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7895 &[
7896 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
7897 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
7898 ]
7899 );
7900
7901 view.update(cx, |view, cx| {
7902 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7903 });
7904 assert_eq!(
7905 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7906 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
7907 );
7908
7909 // Trying to expand the selected syntax node one more time has no effect.
7910 view.update(cx, |view, cx| {
7911 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7912 });
7913 assert_eq!(
7914 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7915 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
7916 );
7917
7918 view.update(cx, |view, cx| {
7919 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7920 });
7921 assert_eq!(
7922 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7923 &[
7924 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
7925 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
7926 ]
7927 );
7928
7929 view.update(cx, |view, cx| {
7930 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7931 });
7932 assert_eq!(
7933 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7934 &[
7935 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
7936 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7937 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
7938 ]
7939 );
7940
7941 view.update(cx, |view, cx| {
7942 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7943 });
7944 assert_eq!(
7945 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7946 &[
7947 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7948 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7949 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7950 ]
7951 );
7952
7953 // Trying to shrink the selected syntax node one more time has no effect.
7954 view.update(cx, |view, cx| {
7955 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7956 });
7957 assert_eq!(
7958 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7959 &[
7960 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7961 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7962 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7963 ]
7964 );
7965
7966 // Ensure that we keep expanding the selection if the larger selection starts or ends within
7967 // a fold.
7968 view.update(cx, |view, cx| {
7969 view.fold_ranges(
7970 vec![
7971 Point::new(0, 21)..Point::new(0, 24),
7972 Point::new(3, 20)..Point::new(3, 22),
7973 ],
7974 cx,
7975 );
7976 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7977 });
7978 assert_eq!(
7979 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7980 &[
7981 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
7982 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7983 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
7984 ]
7985 );
7986 }
7987
7988 #[gpui::test]
7989 async fn test_autoindent_selections(cx: &mut gpui::TestAppContext) {
7990 let settings = cx.read(Settings::test);
7991 let language = Arc::new(
7992 Language::new(
7993 LanguageConfig {
7994 brackets: vec![
7995 BracketPair {
7996 start: "{".to_string(),
7997 end: "}".to_string(),
7998 close: false,
7999 newline: true,
8000 },
8001 BracketPair {
8002 start: "(".to_string(),
8003 end: ")".to_string(),
8004 close: false,
8005 newline: true,
8006 },
8007 ],
8008 ..Default::default()
8009 },
8010 Some(tree_sitter_rust::language()),
8011 )
8012 .with_indents_query(
8013 r#"
8014 (_ "(" ")" @end) @indent
8015 (_ "{" "}" @end) @indent
8016 "#,
8017 )
8018 .unwrap(),
8019 );
8020
8021 let text = "fn a() {}";
8022
8023 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8024 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8025 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8026 editor
8027 .condition(&cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
8028 .await;
8029
8030 editor.update(cx, |editor, cx| {
8031 editor.select_ranges([5..5, 8..8, 9..9], None, cx);
8032 editor.newline(&Newline, cx);
8033 assert_eq!(editor.text(cx), "fn a(\n \n) {\n \n}\n");
8034 assert_eq!(
8035 editor.selected_ranges(cx),
8036 &[
8037 Point::new(1, 4)..Point::new(1, 4),
8038 Point::new(3, 4)..Point::new(3, 4),
8039 Point::new(5, 0)..Point::new(5, 0)
8040 ]
8041 );
8042 });
8043 }
8044
8045 #[gpui::test]
8046 async fn test_autoclose_pairs(cx: &mut gpui::TestAppContext) {
8047 let settings = cx.read(Settings::test);
8048 let language = Arc::new(Language::new(
8049 LanguageConfig {
8050 brackets: vec![
8051 BracketPair {
8052 start: "{".to_string(),
8053 end: "}".to_string(),
8054 close: true,
8055 newline: true,
8056 },
8057 BracketPair {
8058 start: "/*".to_string(),
8059 end: " */".to_string(),
8060 close: true,
8061 newline: true,
8062 },
8063 ],
8064 ..Default::default()
8065 },
8066 Some(tree_sitter_rust::language()),
8067 ));
8068
8069 let text = r#"
8070 a
8071
8072 /
8073
8074 "#
8075 .unindent();
8076
8077 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8078 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8079 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8080 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
8081 .await;
8082
8083 view.update(cx, |view, cx| {
8084 view.select_display_ranges(
8085 &[
8086 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
8087 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
8088 ],
8089 cx,
8090 );
8091 view.handle_input(&Input("{".to_string()), cx);
8092 view.handle_input(&Input("{".to_string()), cx);
8093 view.handle_input(&Input("{".to_string()), cx);
8094 assert_eq!(
8095 view.text(cx),
8096 "
8097 {{{}}}
8098 {{{}}}
8099 /
8100
8101 "
8102 .unindent()
8103 );
8104
8105 view.move_right(&MoveRight, cx);
8106 view.handle_input(&Input("}".to_string()), cx);
8107 view.handle_input(&Input("}".to_string()), cx);
8108 view.handle_input(&Input("}".to_string()), cx);
8109 assert_eq!(
8110 view.text(cx),
8111 "
8112 {{{}}}}
8113 {{{}}}}
8114 /
8115
8116 "
8117 .unindent()
8118 );
8119
8120 view.undo(&Undo, cx);
8121 view.handle_input(&Input("/".to_string()), cx);
8122 view.handle_input(&Input("*".to_string()), cx);
8123 assert_eq!(
8124 view.text(cx),
8125 "
8126 /* */
8127 /* */
8128 /
8129
8130 "
8131 .unindent()
8132 );
8133
8134 view.undo(&Undo, cx);
8135 view.select_display_ranges(
8136 &[
8137 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
8138 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
8139 ],
8140 cx,
8141 );
8142 view.handle_input(&Input("*".to_string()), cx);
8143 assert_eq!(
8144 view.text(cx),
8145 "
8146 a
8147
8148 /*
8149 *
8150 "
8151 .unindent()
8152 );
8153
8154 view.finalize_last_transaction(cx);
8155 view.select_display_ranges(&[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)], cx);
8156 view.handle_input(&Input("{".to_string()), cx);
8157 assert_eq!(
8158 view.text(cx),
8159 "
8160 {a
8161
8162 /*
8163 *
8164 "
8165 .unindent()
8166 );
8167
8168 view.undo(&Undo, cx);
8169 view.select_display_ranges(&[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1)], cx);
8170 view.handle_input(&Input("{".to_string()), cx);
8171 assert_eq!(
8172 view.text(cx),
8173 "
8174 {a}
8175
8176 /*
8177 *
8178 "
8179 .unindent()
8180 );
8181 assert_eq!(
8182 view.selected_display_ranges(cx),
8183 [DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)]
8184 );
8185 });
8186 }
8187
8188 #[gpui::test]
8189 async fn test_snippets(cx: &mut gpui::TestAppContext) {
8190 let settings = cx.read(Settings::test);
8191
8192 let text = "
8193 a. b
8194 a. b
8195 a. b
8196 "
8197 .unindent();
8198 let buffer = cx.update(|cx| MultiBuffer::build_simple(&text, cx));
8199 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8200
8201 editor.update(cx, |editor, cx| {
8202 let buffer = &editor.snapshot(cx).buffer_snapshot;
8203 let snippet = Snippet::parse("f(${1:one}, ${2:two}, ${1:three})$0").unwrap();
8204 let insertion_ranges = [
8205 Point::new(0, 2).to_offset(buffer)..Point::new(0, 2).to_offset(buffer),
8206 Point::new(1, 2).to_offset(buffer)..Point::new(1, 2).to_offset(buffer),
8207 Point::new(2, 2).to_offset(buffer)..Point::new(2, 2).to_offset(buffer),
8208 ];
8209
8210 editor
8211 .insert_snippet(&insertion_ranges, snippet, cx)
8212 .unwrap();
8213 assert_eq!(
8214 editor.text(cx),
8215 "
8216 a.f(one, two, three) b
8217 a.f(one, two, three) b
8218 a.f(one, two, three) b
8219 "
8220 .unindent()
8221 );
8222 assert_eq!(
8223 editor.selected_ranges::<Point>(cx),
8224 &[
8225 Point::new(0, 4)..Point::new(0, 7),
8226 Point::new(0, 14)..Point::new(0, 19),
8227 Point::new(1, 4)..Point::new(1, 7),
8228 Point::new(1, 14)..Point::new(1, 19),
8229 Point::new(2, 4)..Point::new(2, 7),
8230 Point::new(2, 14)..Point::new(2, 19),
8231 ]
8232 );
8233
8234 // Can't move earlier than the first tab stop
8235 editor.move_to_prev_snippet_tabstop(cx);
8236 assert_eq!(
8237 editor.selected_ranges::<Point>(cx),
8238 &[
8239 Point::new(0, 4)..Point::new(0, 7),
8240 Point::new(0, 14)..Point::new(0, 19),
8241 Point::new(1, 4)..Point::new(1, 7),
8242 Point::new(1, 14)..Point::new(1, 19),
8243 Point::new(2, 4)..Point::new(2, 7),
8244 Point::new(2, 14)..Point::new(2, 19),
8245 ]
8246 );
8247
8248 assert!(editor.move_to_next_snippet_tabstop(cx));
8249 assert_eq!(
8250 editor.selected_ranges::<Point>(cx),
8251 &[
8252 Point::new(0, 9)..Point::new(0, 12),
8253 Point::new(1, 9)..Point::new(1, 12),
8254 Point::new(2, 9)..Point::new(2, 12)
8255 ]
8256 );
8257
8258 editor.move_to_prev_snippet_tabstop(cx);
8259 assert_eq!(
8260 editor.selected_ranges::<Point>(cx),
8261 &[
8262 Point::new(0, 4)..Point::new(0, 7),
8263 Point::new(0, 14)..Point::new(0, 19),
8264 Point::new(1, 4)..Point::new(1, 7),
8265 Point::new(1, 14)..Point::new(1, 19),
8266 Point::new(2, 4)..Point::new(2, 7),
8267 Point::new(2, 14)..Point::new(2, 19),
8268 ]
8269 );
8270
8271 assert!(editor.move_to_next_snippet_tabstop(cx));
8272 assert!(editor.move_to_next_snippet_tabstop(cx));
8273 assert_eq!(
8274 editor.selected_ranges::<Point>(cx),
8275 &[
8276 Point::new(0, 20)..Point::new(0, 20),
8277 Point::new(1, 20)..Point::new(1, 20),
8278 Point::new(2, 20)..Point::new(2, 20)
8279 ]
8280 );
8281
8282 // As soon as the last tab stop is reached, snippet state is gone
8283 editor.move_to_prev_snippet_tabstop(cx);
8284 assert_eq!(
8285 editor.selected_ranges::<Point>(cx),
8286 &[
8287 Point::new(0, 20)..Point::new(0, 20),
8288 Point::new(1, 20)..Point::new(1, 20),
8289 Point::new(2, 20)..Point::new(2, 20)
8290 ]
8291 );
8292 });
8293 }
8294
8295 #[gpui::test]
8296 async fn test_completion(cx: &mut gpui::TestAppContext) {
8297 let settings = cx.read(Settings::test);
8298 let (language_server, mut fake) = cx.update(|cx| {
8299 lsp::LanguageServer::fake_with_capabilities(
8300 lsp::ServerCapabilities {
8301 completion_provider: Some(lsp::CompletionOptions {
8302 trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
8303 ..Default::default()
8304 }),
8305 ..Default::default()
8306 },
8307 cx,
8308 )
8309 });
8310
8311 let text = "
8312 one
8313 two
8314 three
8315 "
8316 .unindent();
8317
8318 let fs = FakeFs::new(cx.background().clone());
8319 fs.insert_file("/file", text).await;
8320
8321 let project = Project::test(fs, cx);
8322
8323 let (worktree, relative_path) = project
8324 .update(cx, |project, cx| {
8325 project.find_or_create_local_worktree("/file", true, cx)
8326 })
8327 .await
8328 .unwrap();
8329 let project_path = ProjectPath {
8330 worktree_id: worktree.read_with(cx, |worktree, _| worktree.id()),
8331 path: relative_path.into(),
8332 };
8333 let buffer = project
8334 .update(cx, |project, cx| project.open_buffer(project_path, cx))
8335 .await
8336 .unwrap();
8337 buffer.update(cx, |buffer, cx| {
8338 buffer.set_language_server(Some(language_server), cx);
8339 });
8340
8341 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8342 buffer.next_notification(&cx).await;
8343
8344 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8345
8346 editor.update(cx, |editor, cx| {
8347 editor.project = Some(project);
8348 editor.select_ranges([Point::new(0, 3)..Point::new(0, 3)], None, cx);
8349 editor.handle_input(&Input(".".to_string()), cx);
8350 });
8351
8352 handle_completion_request(
8353 &mut fake,
8354 "/file",
8355 Point::new(0, 4),
8356 vec![
8357 (Point::new(0, 4)..Point::new(0, 4), "first_completion"),
8358 (Point::new(0, 4)..Point::new(0, 4), "second_completion"),
8359 ],
8360 )
8361 .await;
8362 editor
8363 .condition(&cx, |editor, _| editor.context_menu_visible())
8364 .await;
8365
8366 let apply_additional_edits = editor.update(cx, |editor, cx| {
8367 editor.move_down(&MoveDown, cx);
8368 let apply_additional_edits = editor
8369 .confirm_completion(&ConfirmCompletion(None), cx)
8370 .unwrap();
8371 assert_eq!(
8372 editor.text(cx),
8373 "
8374 one.second_completion
8375 two
8376 three
8377 "
8378 .unindent()
8379 );
8380 apply_additional_edits
8381 });
8382
8383 handle_resolve_completion_request(
8384 &mut fake,
8385 Some((Point::new(2, 5)..Point::new(2, 5), "\nadditional edit")),
8386 )
8387 .await;
8388 apply_additional_edits.await.unwrap();
8389 assert_eq!(
8390 editor.read_with(cx, |editor, cx| editor.text(cx)),
8391 "
8392 one.second_completion
8393 two
8394 three
8395 additional edit
8396 "
8397 .unindent()
8398 );
8399
8400 editor.update(cx, |editor, cx| {
8401 editor.select_ranges(
8402 [
8403 Point::new(1, 3)..Point::new(1, 3),
8404 Point::new(2, 5)..Point::new(2, 5),
8405 ],
8406 None,
8407 cx,
8408 );
8409
8410 editor.handle_input(&Input(" ".to_string()), cx);
8411 assert!(editor.context_menu.is_none());
8412 editor.handle_input(&Input("s".to_string()), cx);
8413 assert!(editor.context_menu.is_none());
8414 });
8415
8416 handle_completion_request(
8417 &mut fake,
8418 "/file",
8419 Point::new(2, 7),
8420 vec![
8421 (Point::new(2, 6)..Point::new(2, 7), "fourth_completion"),
8422 (Point::new(2, 6)..Point::new(2, 7), "fifth_completion"),
8423 (Point::new(2, 6)..Point::new(2, 7), "sixth_completion"),
8424 ],
8425 )
8426 .await;
8427 editor
8428 .condition(&cx, |editor, _| editor.context_menu_visible())
8429 .await;
8430
8431 editor.update(cx, |editor, cx| {
8432 editor.handle_input(&Input("i".to_string()), cx);
8433 });
8434
8435 handle_completion_request(
8436 &mut fake,
8437 "/file",
8438 Point::new(2, 8),
8439 vec![
8440 (Point::new(2, 6)..Point::new(2, 8), "fourth_completion"),
8441 (Point::new(2, 6)..Point::new(2, 8), "fifth_completion"),
8442 (Point::new(2, 6)..Point::new(2, 8), "sixth_completion"),
8443 ],
8444 )
8445 .await;
8446 editor
8447 .condition(&cx, |editor, _| editor.context_menu_visible())
8448 .await;
8449
8450 let apply_additional_edits = editor.update(cx, |editor, cx| {
8451 let apply_additional_edits = editor
8452 .confirm_completion(&ConfirmCompletion(None), cx)
8453 .unwrap();
8454 assert_eq!(
8455 editor.text(cx),
8456 "
8457 one.second_completion
8458 two sixth_completion
8459 three sixth_completion
8460 additional edit
8461 "
8462 .unindent()
8463 );
8464 apply_additional_edits
8465 });
8466 handle_resolve_completion_request(&mut fake, None).await;
8467 apply_additional_edits.await.unwrap();
8468
8469 async fn handle_completion_request(
8470 fake: &mut FakeLanguageServer,
8471 path: &'static str,
8472 position: Point,
8473 completions: Vec<(Range<Point>, &'static str)>,
8474 ) {
8475 fake.handle_request::<lsp::request::Completion, _>(move |params, _| {
8476 assert_eq!(
8477 params.text_document_position.text_document.uri,
8478 lsp::Url::from_file_path(path).unwrap()
8479 );
8480 assert_eq!(
8481 params.text_document_position.position,
8482 lsp::Position::new(position.row, position.column)
8483 );
8484 Some(lsp::CompletionResponse::Array(
8485 completions
8486 .iter()
8487 .map(|(range, new_text)| lsp::CompletionItem {
8488 label: new_text.to_string(),
8489 text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
8490 range: lsp::Range::new(
8491 lsp::Position::new(range.start.row, range.start.column),
8492 lsp::Position::new(range.start.row, range.start.column),
8493 ),
8494 new_text: new_text.to_string(),
8495 })),
8496 ..Default::default()
8497 })
8498 .collect(),
8499 ))
8500 })
8501 .next()
8502 .await;
8503 }
8504
8505 async fn handle_resolve_completion_request(
8506 fake: &mut FakeLanguageServer,
8507 edit: Option<(Range<Point>, &'static str)>,
8508 ) {
8509 fake.handle_request::<lsp::request::ResolveCompletionItem, _>(move |_, _| {
8510 lsp::CompletionItem {
8511 additional_text_edits: edit.clone().map(|(range, new_text)| {
8512 vec![lsp::TextEdit::new(
8513 lsp::Range::new(
8514 lsp::Position::new(range.start.row, range.start.column),
8515 lsp::Position::new(range.end.row, range.end.column),
8516 ),
8517 new_text.to_string(),
8518 )]
8519 }),
8520 ..Default::default()
8521 }
8522 })
8523 .next()
8524 .await;
8525 }
8526 }
8527
8528 #[gpui::test]
8529 async fn test_toggle_comment(cx: &mut gpui::TestAppContext) {
8530 let settings = cx.read(Settings::test);
8531 let language = Arc::new(Language::new(
8532 LanguageConfig {
8533 line_comment: Some("// ".to_string()),
8534 ..Default::default()
8535 },
8536 Some(tree_sitter_rust::language()),
8537 ));
8538
8539 let text = "
8540 fn a() {
8541 //b();
8542 // c();
8543 // d();
8544 }
8545 "
8546 .unindent();
8547
8548 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8549 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8550 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8551
8552 view.update(cx, |editor, cx| {
8553 // If multiple selections intersect a line, the line is only
8554 // toggled once.
8555 editor.select_display_ranges(
8556 &[
8557 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
8558 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
8559 ],
8560 cx,
8561 );
8562 editor.toggle_comments(&ToggleComments, cx);
8563 assert_eq!(
8564 editor.text(cx),
8565 "
8566 fn a() {
8567 b();
8568 c();
8569 d();
8570 }
8571 "
8572 .unindent()
8573 );
8574
8575 // The comment prefix is inserted at the same column for every line
8576 // in a selection.
8577 editor.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx);
8578 editor.toggle_comments(&ToggleComments, cx);
8579 assert_eq!(
8580 editor.text(cx),
8581 "
8582 fn a() {
8583 // b();
8584 // c();
8585 // d();
8586 }
8587 "
8588 .unindent()
8589 );
8590
8591 // If a selection ends at the beginning of a line, that line is not toggled.
8592 editor.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx);
8593 editor.toggle_comments(&ToggleComments, cx);
8594 assert_eq!(
8595 editor.text(cx),
8596 "
8597 fn a() {
8598 // b();
8599 c();
8600 // d();
8601 }
8602 "
8603 .unindent()
8604 );
8605 });
8606 }
8607
8608 #[gpui::test]
8609 fn test_editing_disjoint_excerpts(cx: &mut gpui::MutableAppContext) {
8610 let settings = Settings::test(cx);
8611 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8612 let multibuffer = cx.add_model(|cx| {
8613 let mut multibuffer = MultiBuffer::new(0);
8614 multibuffer.push_excerpts(
8615 buffer.clone(),
8616 [
8617 Point::new(0, 0)..Point::new(0, 4),
8618 Point::new(1, 0)..Point::new(1, 4),
8619 ],
8620 cx,
8621 );
8622 multibuffer
8623 });
8624
8625 assert_eq!(multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb");
8626
8627 let (_, view) = cx.add_window(Default::default(), |cx| {
8628 build_editor(multibuffer, settings, cx)
8629 });
8630 view.update(cx, |view, cx| {
8631 assert_eq!(view.text(cx), "aaaa\nbbbb");
8632 view.select_ranges(
8633 [
8634 Point::new(0, 0)..Point::new(0, 0),
8635 Point::new(1, 0)..Point::new(1, 0),
8636 ],
8637 None,
8638 cx,
8639 );
8640
8641 view.handle_input(&Input("X".to_string()), cx);
8642 assert_eq!(view.text(cx), "Xaaaa\nXbbbb");
8643 assert_eq!(
8644 view.selected_ranges(cx),
8645 [
8646 Point::new(0, 1)..Point::new(0, 1),
8647 Point::new(1, 1)..Point::new(1, 1),
8648 ]
8649 )
8650 });
8651 }
8652
8653 #[gpui::test]
8654 fn test_editing_overlapping_excerpts(cx: &mut gpui::MutableAppContext) {
8655 let settings = Settings::test(cx);
8656 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8657 let multibuffer = cx.add_model(|cx| {
8658 let mut multibuffer = MultiBuffer::new(0);
8659 multibuffer.push_excerpts(
8660 buffer,
8661 [
8662 Point::new(0, 0)..Point::new(1, 4),
8663 Point::new(1, 0)..Point::new(2, 4),
8664 ],
8665 cx,
8666 );
8667 multibuffer
8668 });
8669
8670 assert_eq!(
8671 multibuffer.read(cx).read(cx).text(),
8672 "aaaa\nbbbb\nbbbb\ncccc"
8673 );
8674
8675 let (_, view) = cx.add_window(Default::default(), |cx| {
8676 build_editor(multibuffer, settings, cx)
8677 });
8678 view.update(cx, |view, cx| {
8679 view.select_ranges(
8680 [
8681 Point::new(1, 1)..Point::new(1, 1),
8682 Point::new(2, 3)..Point::new(2, 3),
8683 ],
8684 None,
8685 cx,
8686 );
8687
8688 view.handle_input(&Input("X".to_string()), cx);
8689 assert_eq!(view.text(cx), "aaaa\nbXbbXb\nbXbbXb\ncccc");
8690 assert_eq!(
8691 view.selected_ranges(cx),
8692 [
8693 Point::new(1, 2)..Point::new(1, 2),
8694 Point::new(2, 5)..Point::new(2, 5),
8695 ]
8696 );
8697
8698 view.newline(&Newline, cx);
8699 assert_eq!(view.text(cx), "aaaa\nbX\nbbX\nb\nbX\nbbX\nb\ncccc");
8700 assert_eq!(
8701 view.selected_ranges(cx),
8702 [
8703 Point::new(2, 0)..Point::new(2, 0),
8704 Point::new(6, 0)..Point::new(6, 0),
8705 ]
8706 );
8707 });
8708 }
8709
8710 #[gpui::test]
8711 fn test_refresh_selections(cx: &mut gpui::MutableAppContext) {
8712 let settings = Settings::test(cx);
8713 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8714 let mut excerpt1_id = None;
8715 let multibuffer = cx.add_model(|cx| {
8716 let mut multibuffer = MultiBuffer::new(0);
8717 excerpt1_id = multibuffer
8718 .push_excerpts(
8719 buffer.clone(),
8720 [
8721 Point::new(0, 0)..Point::new(1, 4),
8722 Point::new(1, 0)..Point::new(2, 4),
8723 ],
8724 cx,
8725 )
8726 .into_iter()
8727 .next();
8728 multibuffer
8729 });
8730 assert_eq!(
8731 multibuffer.read(cx).read(cx).text(),
8732 "aaaa\nbbbb\nbbbb\ncccc"
8733 );
8734 let (_, editor) = cx.add_window(Default::default(), |cx| {
8735 let mut editor = build_editor(multibuffer.clone(), settings, cx);
8736 editor.select_ranges(
8737 [
8738 Point::new(1, 3)..Point::new(1, 3),
8739 Point::new(2, 1)..Point::new(2, 1),
8740 ],
8741 None,
8742 cx,
8743 );
8744 editor
8745 });
8746
8747 // Refreshing selections is a no-op when excerpts haven't changed.
8748 editor.update(cx, |editor, cx| {
8749 editor.refresh_selections(cx);
8750 assert_eq!(
8751 editor.selected_ranges(cx),
8752 [
8753 Point::new(1, 3)..Point::new(1, 3),
8754 Point::new(2, 1)..Point::new(2, 1),
8755 ]
8756 );
8757 });
8758
8759 multibuffer.update(cx, |multibuffer, cx| {
8760 multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx);
8761 });
8762 editor.update(cx, |editor, cx| {
8763 // Removing an excerpt causes the first selection to become degenerate.
8764 assert_eq!(
8765 editor.selected_ranges(cx),
8766 [
8767 Point::new(0, 0)..Point::new(0, 0),
8768 Point::new(0, 1)..Point::new(0, 1)
8769 ]
8770 );
8771
8772 // Refreshing selections will relocate the first selection to the original buffer
8773 // location.
8774 editor.refresh_selections(cx);
8775 assert_eq!(
8776 editor.selected_ranges(cx),
8777 [
8778 Point::new(0, 1)..Point::new(0, 1),
8779 Point::new(0, 3)..Point::new(0, 3)
8780 ]
8781 );
8782 });
8783 }
8784
8785 #[gpui::test]
8786 async fn test_extra_newline_insertion(cx: &mut gpui::TestAppContext) {
8787 let settings = cx.read(Settings::test);
8788 let language = Arc::new(Language::new(
8789 LanguageConfig {
8790 brackets: vec![
8791 BracketPair {
8792 start: "{".to_string(),
8793 end: "}".to_string(),
8794 close: true,
8795 newline: true,
8796 },
8797 BracketPair {
8798 start: "/* ".to_string(),
8799 end: " */".to_string(),
8800 close: true,
8801 newline: true,
8802 },
8803 ],
8804 ..Default::default()
8805 },
8806 Some(tree_sitter_rust::language()),
8807 ));
8808
8809 let text = concat!(
8810 "{ }\n", // Suppress rustfmt
8811 " x\n", //
8812 " /* */\n", //
8813 "x\n", //
8814 "{{} }\n", //
8815 );
8816
8817 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8818 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8819 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8820 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
8821 .await;
8822
8823 view.update(cx, |view, cx| {
8824 view.select_display_ranges(
8825 &[
8826 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
8827 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
8828 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
8829 ],
8830 cx,
8831 );
8832 view.newline(&Newline, cx);
8833
8834 assert_eq!(
8835 view.buffer().read(cx).read(cx).text(),
8836 concat!(
8837 "{ \n", // Suppress rustfmt
8838 "\n", //
8839 "}\n", //
8840 " x\n", //
8841 " /* \n", //
8842 " \n", //
8843 " */\n", //
8844 "x\n", //
8845 "{{} \n", //
8846 "}\n", //
8847 )
8848 );
8849 });
8850 }
8851
8852 #[gpui::test]
8853 fn test_highlighted_ranges(cx: &mut gpui::MutableAppContext) {
8854 let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
8855 let settings = Settings::test(&cx);
8856 let (_, editor) = cx.add_window(Default::default(), |cx| {
8857 build_editor(buffer.clone(), settings, cx)
8858 });
8859
8860 editor.update(cx, |editor, cx| {
8861 struct Type1;
8862 struct Type2;
8863
8864 let buffer = buffer.read(cx).snapshot(cx);
8865
8866 let anchor_range = |range: Range<Point>| {
8867 buffer.anchor_after(range.start)..buffer.anchor_after(range.end)
8868 };
8869
8870 editor.highlight_ranges::<Type1>(
8871 vec![
8872 anchor_range(Point::new(2, 1)..Point::new(2, 3)),
8873 anchor_range(Point::new(4, 2)..Point::new(4, 4)),
8874 anchor_range(Point::new(6, 3)..Point::new(6, 5)),
8875 anchor_range(Point::new(8, 4)..Point::new(8, 6)),
8876 ],
8877 Color::red(),
8878 cx,
8879 );
8880 editor.highlight_ranges::<Type2>(
8881 vec![
8882 anchor_range(Point::new(3, 2)..Point::new(3, 5)),
8883 anchor_range(Point::new(5, 3)..Point::new(5, 6)),
8884 anchor_range(Point::new(7, 4)..Point::new(7, 7)),
8885 anchor_range(Point::new(9, 5)..Point::new(9, 8)),
8886 ],
8887 Color::green(),
8888 cx,
8889 );
8890
8891 let snapshot = editor.snapshot(cx);
8892 let mut highlighted_ranges = editor.highlighted_ranges_in_range(
8893 anchor_range(Point::new(3, 4)..Point::new(7, 4)),
8894 &snapshot,
8895 );
8896 // Enforce a consistent ordering based on color without relying on the ordering of the
8897 // highlight's `TypeId` which is non-deterministic.
8898 highlighted_ranges.sort_unstable_by_key(|(_, color)| *color);
8899 assert_eq!(
8900 highlighted_ranges,
8901 &[
8902 (
8903 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 5),
8904 Color::green(),
8905 ),
8906 (
8907 DisplayPoint::new(5, 3)..DisplayPoint::new(5, 6),
8908 Color::green(),
8909 ),
8910 (
8911 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 4),
8912 Color::red(),
8913 ),
8914 (
8915 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
8916 Color::red(),
8917 ),
8918 ]
8919 );
8920 assert_eq!(
8921 editor.highlighted_ranges_in_range(
8922 anchor_range(Point::new(5, 6)..Point::new(6, 4)),
8923 &snapshot,
8924 ),
8925 &[(
8926 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
8927 Color::red(),
8928 )]
8929 );
8930 });
8931 }
8932
8933 #[test]
8934 fn test_combine_syntax_and_fuzzy_match_highlights() {
8935 let string = "abcdefghijklmnop";
8936 let default = HighlightStyle::default();
8937 let syntax_ranges = [
8938 (
8939 0..3,
8940 HighlightStyle {
8941 color: Color::red(),
8942 ..default
8943 },
8944 ),
8945 (
8946 4..8,
8947 HighlightStyle {
8948 color: Color::green(),
8949 ..default
8950 },
8951 ),
8952 ];
8953 let match_indices = [4, 6, 7, 8];
8954 assert_eq!(
8955 combine_syntax_and_fuzzy_match_highlights(
8956 &string,
8957 default,
8958 syntax_ranges.into_iter(),
8959 &match_indices,
8960 ),
8961 &[
8962 (
8963 0..3,
8964 HighlightStyle {
8965 color: Color::red(),
8966 ..default
8967 },
8968 ),
8969 (
8970 4..5,
8971 HighlightStyle {
8972 color: Color::green(),
8973 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
8974 ..default
8975 },
8976 ),
8977 (
8978 5..6,
8979 HighlightStyle {
8980 color: Color::green(),
8981 ..default
8982 },
8983 ),
8984 (
8985 6..8,
8986 HighlightStyle {
8987 color: Color::green(),
8988 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
8989 ..default
8990 },
8991 ),
8992 (
8993 8..9,
8994 HighlightStyle {
8995 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
8996 ..default
8997 },
8998 ),
8999 ]
9000 );
9001 }
9002
9003 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
9004 let point = DisplayPoint::new(row as u32, column as u32);
9005 point..point
9006 }
9007
9008 fn build_editor(
9009 buffer: ModelHandle<MultiBuffer>,
9010 settings: Settings,
9011 cx: &mut ViewContext<Editor>,
9012 ) -> Editor {
9013 let settings = watch::channel_with(settings);
9014 Editor::new(EditorMode::Full, buffer, None, settings.1, None, cx)
9015 }
9016}
9017
9018trait RangeExt<T> {
9019 fn sorted(&self) -> Range<T>;
9020 fn to_inclusive(&self) -> RangeInclusive<T>;
9021}
9022
9023impl<T: Ord + Clone> RangeExt<T> for Range<T> {
9024 fn sorted(&self) -> Self {
9025 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
9026 }
9027
9028 fn to_inclusive(&self) -> RangeInclusive<T> {
9029 self.start.clone()..=self.end.clone()
9030 }
9031}