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 itertools::Itertools as _;
32pub use language::{char_kind, CharKind};
33use language::{
34 BracketPair, Buffer, CodeAction, CodeLabel, Completion, Diagnostic, DiagnosticSeverity,
35 Language, OffsetRangeExt, Point, Selection, SelectionGoal, TransactionId,
36};
37use multi_buffer::MultiBufferChunks;
38pub use multi_buffer::{
39 Anchor, AnchorRangeExt, ExcerptId, MultiBuffer, MultiBufferSnapshot, ToOffset, ToPoint,
40};
41use ordered_float::OrderedFloat;
42use project::{Project, ProjectTransaction};
43use serde::{Deserialize, Serialize};
44use smallvec::SmallVec;
45use smol::Timer;
46use snippet::Snippet;
47use std::{
48 any::TypeId,
49 cmp::{self, Ordering, Reverse},
50 iter::{self, FromIterator},
51 mem,
52 ops::{Deref, DerefMut, Range, RangeInclusive, Sub},
53 sync::Arc,
54 time::{Duration, Instant},
55};
56pub use sum_tree::Bias;
57use text::rope::TextDimension;
58use theme::DiagnosticStyle;
59use util::{post_inc, ResultExt, TryFutureExt};
60use workspace::{settings, ItemNavHistory, Settings, Workspace};
61
62const CURSOR_BLINK_INTERVAL: Duration = Duration::from_millis(500);
63const MAX_LINE_LEN: usize = 1024;
64const MIN_NAVIGATION_HISTORY_ROW_DELTA: i64 = 10;
65
66action!(Cancel);
67action!(Backspace);
68action!(Delete);
69action!(Input, String);
70action!(Newline);
71action!(Tab);
72action!(Outdent);
73action!(DeleteLine);
74action!(DeleteToPreviousWordBoundary);
75action!(DeleteToNextWordBoundary);
76action!(DeleteToBeginningOfLine);
77action!(DeleteToEndOfLine);
78action!(CutToEndOfLine);
79action!(DuplicateLine);
80action!(MoveLineUp);
81action!(MoveLineDown);
82action!(Cut);
83action!(Copy);
84action!(Paste);
85action!(Undo);
86action!(Redo);
87action!(MoveUp);
88action!(MoveDown);
89action!(MoveLeft);
90action!(MoveRight);
91action!(MoveToPreviousWordStart);
92action!(MoveToNextWordEnd);
93action!(MoveToBeginningOfLine);
94action!(MoveToEndOfLine);
95action!(MoveToBeginning);
96action!(MoveToEnd);
97action!(SelectUp);
98action!(SelectDown);
99action!(SelectLeft);
100action!(SelectRight);
101action!(SelectToPreviousWordBoundary);
102action!(SelectToNextWordBoundary);
103action!(SelectToBeginningOfLine, bool);
104action!(SelectToEndOfLine, bool);
105action!(SelectToBeginning);
106action!(SelectToEnd);
107action!(SelectAll);
108action!(SelectLine);
109action!(SplitSelectionIntoLines);
110action!(AddSelectionAbove);
111action!(AddSelectionBelow);
112action!(SelectNext, bool);
113action!(ToggleComments);
114action!(SelectLargerSyntaxNode);
115action!(SelectSmallerSyntaxNode);
116action!(MoveToEnclosingBracket);
117action!(GoToDiagnostic, Direction);
118action!(GoToDefinition);
119action!(FindAllReferences);
120action!(Rename);
121action!(ConfirmRename);
122action!(PageUp);
123action!(PageDown);
124action!(Fold);
125action!(Unfold);
126action!(FoldSelectedRanges);
127action!(Scroll, Vector2F);
128action!(Select, SelectPhase);
129action!(ShowCompletions);
130action!(ToggleCodeActions, bool);
131action!(ConfirmCompletion, Option<usize>);
132action!(ConfirmCodeAction, Option<usize>);
133action!(OpenExcerpts);
134
135enum DocumentHighlightRead {}
136enum DocumentHighlightWrite {}
137
138#[derive(Copy, Clone, PartialEq, Eq)]
139pub enum Direction {
140 Prev,
141 Next,
142}
143
144pub fn init(cx: &mut MutableAppContext) {
145 cx.add_bindings(vec![
146 Binding::new("escape", Cancel, Some("Editor")),
147 Binding::new("backspace", Backspace, Some("Editor")),
148 Binding::new("ctrl-h", Backspace, Some("Editor")),
149 Binding::new("delete", Delete, Some("Editor")),
150 Binding::new("ctrl-d", Delete, Some("Editor")),
151 Binding::new("enter", Newline, Some("Editor && mode == full")),
152 Binding::new(
153 "alt-enter",
154 Input("\n".into()),
155 Some("Editor && mode == auto_height"),
156 ),
157 Binding::new(
158 "enter",
159 ConfirmCompletion(None),
160 Some("Editor && showing_completions"),
161 ),
162 Binding::new(
163 "enter",
164 ConfirmCodeAction(None),
165 Some("Editor && showing_code_actions"),
166 ),
167 Binding::new("enter", ConfirmRename, Some("Editor && renaming")),
168 Binding::new("tab", Tab, Some("Editor")),
169 Binding::new(
170 "tab",
171 ConfirmCompletion(None),
172 Some("Editor && showing_completions"),
173 ),
174 Binding::new("shift-tab", Outdent, Some("Editor")),
175 Binding::new("ctrl-shift-K", DeleteLine, Some("Editor")),
176 Binding::new(
177 "alt-backspace",
178 DeleteToPreviousWordBoundary,
179 Some("Editor"),
180 ),
181 Binding::new("alt-h", DeleteToPreviousWordBoundary, Some("Editor")),
182 Binding::new("alt-delete", DeleteToNextWordBoundary, Some("Editor")),
183 Binding::new("alt-d", DeleteToNextWordBoundary, Some("Editor")),
184 Binding::new("cmd-backspace", DeleteToBeginningOfLine, Some("Editor")),
185 Binding::new("cmd-delete", DeleteToEndOfLine, Some("Editor")),
186 Binding::new("ctrl-k", CutToEndOfLine, Some("Editor")),
187 Binding::new("cmd-shift-D", DuplicateLine, Some("Editor")),
188 Binding::new("ctrl-cmd-up", MoveLineUp, Some("Editor")),
189 Binding::new("ctrl-cmd-down", MoveLineDown, Some("Editor")),
190 Binding::new("cmd-x", Cut, Some("Editor")),
191 Binding::new("cmd-c", Copy, Some("Editor")),
192 Binding::new("cmd-v", Paste, Some("Editor")),
193 Binding::new("cmd-z", Undo, Some("Editor")),
194 Binding::new("cmd-shift-Z", Redo, Some("Editor")),
195 Binding::new("up", MoveUp, Some("Editor")),
196 Binding::new("down", MoveDown, Some("Editor")),
197 Binding::new("left", MoveLeft, Some("Editor")),
198 Binding::new("right", MoveRight, Some("Editor")),
199 Binding::new("ctrl-p", MoveUp, Some("Editor")),
200 Binding::new("ctrl-n", MoveDown, Some("Editor")),
201 Binding::new("ctrl-b", MoveLeft, Some("Editor")),
202 Binding::new("ctrl-f", MoveRight, Some("Editor")),
203 Binding::new("alt-left", MoveToPreviousWordStart, Some("Editor")),
204 Binding::new("alt-b", MoveToPreviousWordStart, Some("Editor")),
205 Binding::new("alt-right", MoveToNextWordEnd, Some("Editor")),
206 Binding::new("alt-f", MoveToNextWordEnd, Some("Editor")),
207 Binding::new("cmd-left", MoveToBeginningOfLine, Some("Editor")),
208 Binding::new("ctrl-a", MoveToBeginningOfLine, Some("Editor")),
209 Binding::new("cmd-right", MoveToEndOfLine, Some("Editor")),
210 Binding::new("ctrl-e", MoveToEndOfLine, Some("Editor")),
211 Binding::new("cmd-up", MoveToBeginning, Some("Editor")),
212 Binding::new("cmd-down", MoveToEnd, Some("Editor")),
213 Binding::new("shift-up", SelectUp, Some("Editor")),
214 Binding::new("ctrl-shift-P", SelectUp, Some("Editor")),
215 Binding::new("shift-down", SelectDown, Some("Editor")),
216 Binding::new("ctrl-shift-N", SelectDown, Some("Editor")),
217 Binding::new("shift-left", SelectLeft, Some("Editor")),
218 Binding::new("ctrl-shift-B", SelectLeft, Some("Editor")),
219 Binding::new("shift-right", SelectRight, Some("Editor")),
220 Binding::new("ctrl-shift-F", SelectRight, Some("Editor")),
221 Binding::new(
222 "alt-shift-left",
223 SelectToPreviousWordBoundary,
224 Some("Editor"),
225 ),
226 Binding::new("alt-shift-B", SelectToPreviousWordBoundary, Some("Editor")),
227 Binding::new("alt-shift-right", SelectToNextWordBoundary, Some("Editor")),
228 Binding::new("alt-shift-F", SelectToNextWordBoundary, Some("Editor")),
229 Binding::new(
230 "cmd-shift-left",
231 SelectToBeginningOfLine(true),
232 Some("Editor"),
233 ),
234 Binding::new(
235 "ctrl-shift-A",
236 SelectToBeginningOfLine(true),
237 Some("Editor"),
238 ),
239 Binding::new("cmd-shift-right", SelectToEndOfLine(true), Some("Editor")),
240 Binding::new("ctrl-shift-E", SelectToEndOfLine(true), Some("Editor")),
241 Binding::new("cmd-shift-up", SelectToBeginning, Some("Editor")),
242 Binding::new("cmd-shift-down", SelectToEnd, Some("Editor")),
243 Binding::new("cmd-a", SelectAll, Some("Editor")),
244 Binding::new("cmd-l", SelectLine, Some("Editor")),
245 Binding::new("cmd-shift-L", SplitSelectionIntoLines, Some("Editor")),
246 Binding::new("cmd-alt-up", AddSelectionAbove, Some("Editor")),
247 Binding::new("cmd-ctrl-p", AddSelectionAbove, Some("Editor")),
248 Binding::new("cmd-alt-down", AddSelectionBelow, Some("Editor")),
249 Binding::new("cmd-ctrl-n", AddSelectionBelow, Some("Editor")),
250 Binding::new("cmd-d", SelectNext(false), Some("Editor")),
251 Binding::new("cmd-k cmd-d", SelectNext(true), Some("Editor")),
252 Binding::new("cmd-/", ToggleComments, Some("Editor")),
253 Binding::new("alt-up", SelectLargerSyntaxNode, Some("Editor")),
254 Binding::new("ctrl-w", SelectLargerSyntaxNode, Some("Editor")),
255 Binding::new("alt-down", SelectSmallerSyntaxNode, Some("Editor")),
256 Binding::new("ctrl-shift-W", SelectSmallerSyntaxNode, Some("Editor")),
257 Binding::new("f8", GoToDiagnostic(Direction::Next), Some("Editor")),
258 Binding::new("shift-f8", GoToDiagnostic(Direction::Prev), Some("Editor")),
259 Binding::new("f2", Rename, Some("Editor")),
260 Binding::new("f12", GoToDefinition, Some("Editor")),
261 Binding::new("alt-shift-f12", FindAllReferences, Some("Editor")),
262 Binding::new("ctrl-m", MoveToEnclosingBracket, Some("Editor")),
263 Binding::new("pageup", PageUp, Some("Editor")),
264 Binding::new("pagedown", PageDown, Some("Editor")),
265 Binding::new("alt-cmd-[", Fold, Some("Editor")),
266 Binding::new("alt-cmd-]", Unfold, Some("Editor")),
267 Binding::new("alt-cmd-f", FoldSelectedRanges, Some("Editor")),
268 Binding::new("ctrl-space", ShowCompletions, Some("Editor")),
269 Binding::new("cmd-.", ToggleCodeActions(false), Some("Editor")),
270 Binding::new("alt-enter", OpenExcerpts, Some("Editor")),
271 ]);
272
273 cx.add_action(Editor::open_new);
274 cx.add_action(|this: &mut Editor, action: &Scroll, cx| this.set_scroll_position(action.0, cx));
275 cx.add_action(Editor::select);
276 cx.add_action(Editor::cancel);
277 cx.add_action(Editor::handle_input);
278 cx.add_action(Editor::newline);
279 cx.add_action(Editor::backspace);
280 cx.add_action(Editor::delete);
281 cx.add_action(Editor::tab);
282 cx.add_action(Editor::outdent);
283 cx.add_action(Editor::delete_line);
284 cx.add_action(Editor::delete_to_previous_word_start);
285 cx.add_action(Editor::delete_to_next_word_end);
286 cx.add_action(Editor::delete_to_beginning_of_line);
287 cx.add_action(Editor::delete_to_end_of_line);
288 cx.add_action(Editor::cut_to_end_of_line);
289 cx.add_action(Editor::duplicate_line);
290 cx.add_action(Editor::move_line_up);
291 cx.add_action(Editor::move_line_down);
292 cx.add_action(Editor::cut);
293 cx.add_action(Editor::copy);
294 cx.add_action(Editor::paste);
295 cx.add_action(Editor::undo);
296 cx.add_action(Editor::redo);
297 cx.add_action(Editor::move_up);
298 cx.add_action(Editor::move_down);
299 cx.add_action(Editor::move_left);
300 cx.add_action(Editor::move_right);
301 cx.add_action(Editor::move_to_previous_word_start);
302 cx.add_action(Editor::move_to_next_word_end);
303 cx.add_action(Editor::move_to_beginning_of_line);
304 cx.add_action(Editor::move_to_end_of_line);
305 cx.add_action(Editor::move_to_beginning);
306 cx.add_action(Editor::move_to_end);
307 cx.add_action(Editor::select_up);
308 cx.add_action(Editor::select_down);
309 cx.add_action(Editor::select_left);
310 cx.add_action(Editor::select_right);
311 cx.add_action(Editor::select_to_previous_word_start);
312 cx.add_action(Editor::select_to_next_word_end);
313 cx.add_action(Editor::select_to_beginning_of_line);
314 cx.add_action(Editor::select_to_end_of_line);
315 cx.add_action(Editor::select_to_beginning);
316 cx.add_action(Editor::select_to_end);
317 cx.add_action(Editor::select_all);
318 cx.add_action(Editor::select_line);
319 cx.add_action(Editor::split_selection_into_lines);
320 cx.add_action(Editor::add_selection_above);
321 cx.add_action(Editor::add_selection_below);
322 cx.add_action(Editor::select_next);
323 cx.add_action(Editor::toggle_comments);
324 cx.add_action(Editor::select_larger_syntax_node);
325 cx.add_action(Editor::select_smaller_syntax_node);
326 cx.add_action(Editor::move_to_enclosing_bracket);
327 cx.add_action(Editor::go_to_diagnostic);
328 cx.add_action(Editor::go_to_definition);
329 cx.add_action(Editor::page_up);
330 cx.add_action(Editor::page_down);
331 cx.add_action(Editor::fold);
332 cx.add_action(Editor::unfold);
333 cx.add_action(Editor::fold_selected_ranges);
334 cx.add_action(Editor::show_completions);
335 cx.add_action(Editor::toggle_code_actions);
336 cx.add_action(Editor::open_excerpts);
337 cx.add_async_action(Editor::confirm_completion);
338 cx.add_async_action(Editor::confirm_code_action);
339 cx.add_async_action(Editor::rename);
340 cx.add_async_action(Editor::confirm_rename);
341 cx.add_async_action(Editor::find_all_references);
342
343 workspace::register_project_item::<Editor>(cx);
344 workspace::register_followable_item::<Editor>(cx);
345}
346
347trait InvalidationRegion {
348 fn ranges(&self) -> &[Range<Anchor>];
349}
350
351#[derive(Clone, Debug)]
352pub enum SelectPhase {
353 Begin {
354 position: DisplayPoint,
355 add: bool,
356 click_count: usize,
357 },
358 BeginColumnar {
359 position: DisplayPoint,
360 overshoot: u32,
361 },
362 Extend {
363 position: DisplayPoint,
364 click_count: usize,
365 },
366 Update {
367 position: DisplayPoint,
368 overshoot: u32,
369 scroll_position: Vector2F,
370 },
371 End,
372}
373
374#[derive(Clone, Debug)]
375pub enum SelectMode {
376 Character,
377 Word(Range<Anchor>),
378 Line(Range<Anchor>),
379 All,
380}
381
382#[derive(PartialEq, Eq)]
383pub enum Autoscroll {
384 Fit,
385 Center,
386 Newest,
387}
388
389#[derive(Copy, Clone, PartialEq, Eq)]
390pub enum EditorMode {
391 SingleLine,
392 AutoHeight { max_lines: usize },
393 Full,
394}
395
396#[derive(Clone)]
397pub enum SoftWrap {
398 None,
399 EditorWidth,
400 Column(u32),
401}
402
403#[derive(Clone)]
404pub struct EditorStyle {
405 pub text: TextStyle,
406 pub placeholder_text: Option<TextStyle>,
407 pub theme: theme::Editor,
408}
409
410type CompletionId = usize;
411
412pub type GetFieldEditorTheme = fn(&theme::Theme) -> theme::FieldEditor;
413
414type OverrideTextStyle = dyn Fn(&EditorStyle) -> Option<HighlightStyle>;
415
416pub struct Editor {
417 handle: WeakViewHandle<Self>,
418 buffer: ModelHandle<MultiBuffer>,
419 display_map: ModelHandle<DisplayMap>,
420 next_selection_id: usize,
421 selections: Arc<[Selection<Anchor>]>,
422 pending_selection: Option<PendingSelection>,
423 columnar_selection_tail: Option<Anchor>,
424 add_selections_state: Option<AddSelectionsState>,
425 select_next_state: Option<SelectNextState>,
426 selection_history:
427 HashMap<TransactionId, (Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)>,
428 autoclose_stack: InvalidationStack<BracketPairState>,
429 snippet_stack: InvalidationStack<SnippetState>,
430 select_larger_syntax_node_stack: Vec<Box<[Selection<usize>]>>,
431 active_diagnostics: Option<ActiveDiagnosticGroup>,
432 scroll_position: Vector2F,
433 scroll_top_anchor: Anchor,
434 autoscroll_request: Option<(Autoscroll, bool)>,
435 soft_wrap_mode_override: Option<settings::SoftWrap>,
436 get_field_editor_theme: Option<GetFieldEditorTheme>,
437 override_text_style: Option<Box<OverrideTextStyle>>,
438 project: Option<ModelHandle<Project>>,
439 focused: bool,
440 show_local_cursors: bool,
441 show_local_selections: bool,
442 blink_epoch: usize,
443 blinking_paused: bool,
444 mode: EditorMode,
445 vertical_scroll_margin: f32,
446 placeholder_text: Option<Arc<str>>,
447 highlighted_rows: Option<Range<u32>>,
448 background_highlights: BTreeMap<TypeId, (Color, Vec<Range<Anchor>>)>,
449 nav_history: Option<ItemNavHistory>,
450 context_menu: Option<ContextMenu>,
451 completion_tasks: Vec<(CompletionId, Task<Option<()>>)>,
452 next_completion_id: CompletionId,
453 available_code_actions: Option<(ModelHandle<Buffer>, Arc<[CodeAction]>)>,
454 code_actions_task: Option<Task<()>>,
455 document_highlights_task: Option<Task<()>>,
456 pending_rename: Option<RenameState>,
457 searchable: bool,
458 cursor_shape: CursorShape,
459 leader_replica_id: Option<u16>,
460}
461
462pub struct EditorSnapshot {
463 pub mode: EditorMode,
464 pub display_snapshot: DisplaySnapshot,
465 pub placeholder_text: Option<Arc<str>>,
466 is_focused: bool,
467 scroll_position: Vector2F,
468 scroll_top_anchor: Anchor,
469}
470
471#[derive(Clone)]
472pub struct PendingSelection {
473 selection: Selection<Anchor>,
474 mode: SelectMode,
475}
476
477struct AddSelectionsState {
478 above: bool,
479 stack: Vec<usize>,
480}
481
482struct SelectNextState {
483 query: AhoCorasick,
484 wordwise: bool,
485 done: bool,
486}
487
488struct BracketPairState {
489 ranges: Vec<Range<Anchor>>,
490 pair: BracketPair,
491}
492
493struct SnippetState {
494 ranges: Vec<Vec<Range<Anchor>>>,
495 active_index: usize,
496}
497
498pub struct RenameState {
499 pub range: Range<Anchor>,
500 pub old_name: String,
501 pub editor: ViewHandle<Editor>,
502 block_id: BlockId,
503}
504
505struct InvalidationStack<T>(Vec<T>);
506
507enum ContextMenu {
508 Completions(CompletionsMenu),
509 CodeActions(CodeActionsMenu),
510}
511
512impl ContextMenu {
513 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) -> bool {
514 if self.visible() {
515 match self {
516 ContextMenu::Completions(menu) => menu.select_prev(cx),
517 ContextMenu::CodeActions(menu) => menu.select_prev(cx),
518 }
519 true
520 } else {
521 false
522 }
523 }
524
525 fn select_next(&mut self, cx: &mut ViewContext<Editor>) -> bool {
526 if self.visible() {
527 match self {
528 ContextMenu::Completions(menu) => menu.select_next(cx),
529 ContextMenu::CodeActions(menu) => menu.select_next(cx),
530 }
531 true
532 } else {
533 false
534 }
535 }
536
537 fn visible(&self) -> bool {
538 match self {
539 ContextMenu::Completions(menu) => menu.visible(),
540 ContextMenu::CodeActions(menu) => menu.visible(),
541 }
542 }
543
544 fn render(
545 &self,
546 cursor_position: DisplayPoint,
547 style: EditorStyle,
548 cx: &AppContext,
549 ) -> (DisplayPoint, ElementBox) {
550 match self {
551 ContextMenu::Completions(menu) => (cursor_position, menu.render(style, cx)),
552 ContextMenu::CodeActions(menu) => menu.render(cursor_position, style),
553 }
554 }
555}
556
557struct CompletionsMenu {
558 id: CompletionId,
559 initial_position: Anchor,
560 buffer: ModelHandle<Buffer>,
561 completions: Arc<[Completion]>,
562 match_candidates: Vec<StringMatchCandidate>,
563 matches: Arc<[StringMatch]>,
564 selected_item: usize,
565 list: UniformListState,
566}
567
568impl CompletionsMenu {
569 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) {
570 if self.selected_item > 0 {
571 self.selected_item -= 1;
572 self.list.scroll_to(ScrollTarget::Show(self.selected_item));
573 }
574 cx.notify();
575 }
576
577 fn select_next(&mut self, cx: &mut ViewContext<Editor>) {
578 if self.selected_item + 1 < self.matches.len() {
579 self.selected_item += 1;
580 self.list.scroll_to(ScrollTarget::Show(self.selected_item));
581 }
582 cx.notify();
583 }
584
585 fn visible(&self) -> bool {
586 !self.matches.is_empty()
587 }
588
589 fn render(&self, style: EditorStyle, _: &AppContext) -> ElementBox {
590 enum CompletionTag {}
591
592 let completions = self.completions.clone();
593 let matches = self.matches.clone();
594 let selected_item = self.selected_item;
595 let container_style = style.autocomplete.container;
596 UniformList::new(self.list.clone(), matches.len(), move |range, items, cx| {
597 let start_ix = range.start;
598 for (ix, mat) in matches[range].iter().enumerate() {
599 let completion = &completions[mat.candidate_id];
600 let item_ix = start_ix + ix;
601 items.push(
602 MouseEventHandler::new::<CompletionTag, _, _>(
603 mat.candidate_id,
604 cx,
605 |state, _| {
606 let item_style = if item_ix == selected_item {
607 style.autocomplete.selected_item
608 } else if state.hovered {
609 style.autocomplete.hovered_item
610 } else {
611 style.autocomplete.item
612 };
613
614 Text::new(completion.label.text.clone(), style.text.clone())
615 .with_soft_wrap(false)
616 .with_highlights(combine_syntax_and_fuzzy_match_highlights(
617 &completion.label.text,
618 style.text.color.into(),
619 styled_runs_for_code_label(&completion.label, &style.syntax),
620 &mat.positions,
621 ))
622 .contained()
623 .with_style(item_style)
624 .boxed()
625 },
626 )
627 .with_cursor_style(CursorStyle::PointingHand)
628 .on_mouse_down(move |cx| {
629 cx.dispatch_action(ConfirmCompletion(Some(item_ix)));
630 })
631 .boxed(),
632 );
633 }
634 })
635 .with_width_from_item(
636 self.matches
637 .iter()
638 .enumerate()
639 .max_by_key(|(_, mat)| {
640 self.completions[mat.candidate_id]
641 .label
642 .text
643 .chars()
644 .count()
645 })
646 .map(|(ix, _)| ix),
647 )
648 .contained()
649 .with_style(container_style)
650 .boxed()
651 }
652
653 pub async fn filter(&mut self, query: Option<&str>, executor: Arc<executor::Background>) {
654 let mut matches = if let Some(query) = query {
655 fuzzy::match_strings(
656 &self.match_candidates,
657 query,
658 false,
659 100,
660 &Default::default(),
661 executor,
662 )
663 .await
664 } else {
665 self.match_candidates
666 .iter()
667 .enumerate()
668 .map(|(candidate_id, candidate)| StringMatch {
669 candidate_id,
670 score: Default::default(),
671 positions: Default::default(),
672 string: candidate.string.clone(),
673 })
674 .collect()
675 };
676 matches.sort_unstable_by_key(|mat| {
677 (
678 Reverse(OrderedFloat(mat.score)),
679 self.completions[mat.candidate_id].sort_key(),
680 )
681 });
682
683 for mat in &mut matches {
684 let filter_start = self.completions[mat.candidate_id].label.filter_range.start;
685 for position in &mut mat.positions {
686 *position += filter_start;
687 }
688 }
689
690 self.matches = matches.into();
691 }
692}
693
694#[derive(Clone)]
695struct CodeActionsMenu {
696 actions: Arc<[CodeAction]>,
697 buffer: ModelHandle<Buffer>,
698 selected_item: usize,
699 list: UniformListState,
700 deployed_from_indicator: bool,
701}
702
703impl CodeActionsMenu {
704 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) {
705 if self.selected_item > 0 {
706 self.selected_item -= 1;
707 cx.notify()
708 }
709 }
710
711 fn select_next(&mut self, cx: &mut ViewContext<Editor>) {
712 if self.selected_item + 1 < self.actions.len() {
713 self.selected_item += 1;
714 cx.notify()
715 }
716 }
717
718 fn visible(&self) -> bool {
719 !self.actions.is_empty()
720 }
721
722 fn render(
723 &self,
724 mut cursor_position: DisplayPoint,
725 style: EditorStyle,
726 ) -> (DisplayPoint, ElementBox) {
727 enum ActionTag {}
728
729 let container_style = style.autocomplete.container;
730 let actions = self.actions.clone();
731 let selected_item = self.selected_item;
732 let element =
733 UniformList::new(self.list.clone(), actions.len(), move |range, items, cx| {
734 let start_ix = range.start;
735 for (ix, action) in actions[range].iter().enumerate() {
736 let item_ix = start_ix + ix;
737 items.push(
738 MouseEventHandler::new::<ActionTag, _, _>(item_ix, cx, |state, _| {
739 let item_style = if item_ix == selected_item {
740 style.autocomplete.selected_item
741 } else if state.hovered {
742 style.autocomplete.hovered_item
743 } else {
744 style.autocomplete.item
745 };
746
747 Text::new(action.lsp_action.title.clone(), style.text.clone())
748 .with_soft_wrap(false)
749 .contained()
750 .with_style(item_style)
751 .boxed()
752 })
753 .with_cursor_style(CursorStyle::PointingHand)
754 .on_mouse_down(move |cx| {
755 cx.dispatch_action(ConfirmCodeAction(Some(item_ix)));
756 })
757 .boxed(),
758 );
759 }
760 })
761 .with_width_from_item(
762 self.actions
763 .iter()
764 .enumerate()
765 .max_by_key(|(_, action)| action.lsp_action.title.chars().count())
766 .map(|(ix, _)| ix),
767 )
768 .contained()
769 .with_style(container_style)
770 .boxed();
771
772 if self.deployed_from_indicator {
773 *cursor_position.column_mut() = 0;
774 }
775
776 (cursor_position, element)
777 }
778}
779
780#[derive(Debug)]
781struct ActiveDiagnosticGroup {
782 primary_range: Range<Anchor>,
783 primary_message: String,
784 blocks: HashMap<BlockId, Diagnostic>,
785 is_valid: bool,
786}
787
788#[derive(Serialize, Deserialize)]
789struct ClipboardSelection {
790 len: usize,
791 is_entire_line: bool,
792}
793
794pub struct NavigationData {
795 anchor: Anchor,
796 offset: usize,
797}
798
799pub struct EditorCreated(pub ViewHandle<Editor>);
800
801impl Editor {
802 pub fn single_line(
803 field_editor_style: Option<GetFieldEditorTheme>,
804 cx: &mut ViewContext<Self>,
805 ) -> Self {
806 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
807 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
808 Self::new(EditorMode::SingleLine, buffer, None, field_editor_style, cx)
809 }
810
811 pub fn auto_height(
812 max_lines: usize,
813 field_editor_style: Option<GetFieldEditorTheme>,
814 cx: &mut ViewContext<Self>,
815 ) -> Self {
816 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
817 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
818 Self::new(
819 EditorMode::AutoHeight { max_lines },
820 buffer,
821 None,
822 field_editor_style,
823 cx,
824 )
825 }
826
827 pub fn for_buffer(
828 buffer: ModelHandle<Buffer>,
829 project: Option<ModelHandle<Project>>,
830 cx: &mut ViewContext<Self>,
831 ) -> Self {
832 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
833 Self::new(EditorMode::Full, buffer, project, None, cx)
834 }
835
836 pub fn for_multibuffer(
837 buffer: ModelHandle<MultiBuffer>,
838 project: Option<ModelHandle<Project>>,
839 cx: &mut ViewContext<Self>,
840 ) -> Self {
841 Self::new(EditorMode::Full, buffer, project, None, cx)
842 }
843
844 pub fn clone(&self, cx: &mut ViewContext<Self>) -> Self {
845 let mut clone = Self::new(
846 self.mode,
847 self.buffer.clone(),
848 self.project.clone(),
849 self.get_field_editor_theme,
850 cx,
851 );
852 clone.scroll_position = self.scroll_position;
853 clone.scroll_top_anchor = self.scroll_top_anchor.clone();
854 clone.searchable = self.searchable;
855 clone
856 }
857
858 fn new(
859 mode: EditorMode,
860 buffer: ModelHandle<MultiBuffer>,
861 project: Option<ModelHandle<Project>>,
862 get_field_editor_theme: Option<GetFieldEditorTheme>,
863 cx: &mut ViewContext<Self>,
864 ) -> Self {
865 let display_map = cx.add_model(|cx| {
866 let settings = cx.global::<Settings>();
867 let style = build_style(&*settings, get_field_editor_theme, None, 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 soft_wrap_mode_override: None,
909 get_field_editor_theme,
910 project,
911 scroll_position: Vector2F::zero(),
912 scroll_top_anchor: Anchor::min(),
913 autoscroll_request: None,
914 focused: false,
915 show_local_cursors: false,
916 show_local_selections: true,
917 blink_epoch: 0,
918 blinking_paused: false,
919 mode,
920 vertical_scroll_margin: 3.0,
921 placeholder_text: None,
922 highlighted_rows: None,
923 background_highlights: Default::default(),
924 nav_history: None,
925 context_menu: None,
926 completion_tasks: Default::default(),
927 next_completion_id: 0,
928 available_code_actions: Default::default(),
929 code_actions_task: Default::default(),
930 document_highlights_task: Default::default(),
931 pending_rename: Default::default(),
932 searchable: true,
933 override_text_style: None,
934 cursor_shape: Default::default(),
935 leader_replica_id: None,
936 };
937 this.end_selection(cx);
938
939 let editor_created_event = EditorCreated(cx.handle());
940 cx.emit_global(editor_created_event);
941
942 this
943 }
944
945 pub fn open_new(
946 workspace: &mut Workspace,
947 _: &workspace::OpenNew,
948 cx: &mut ViewContext<Workspace>,
949 ) {
950 let project = workspace.project().clone();
951 if project.read(cx).is_remote() {
952 cx.propagate_action();
953 } else if let Some(buffer) = project
954 .update(cx, |project, cx| project.create_buffer(cx))
955 .log_err()
956 {
957 workspace.add_item(
958 Box::new(cx.add_view(|cx| Editor::for_buffer(buffer, Some(project.clone()), cx))),
959 cx,
960 );
961 }
962 }
963
964 pub fn replica_id(&self, cx: &AppContext) -> ReplicaId {
965 self.buffer.read(cx).replica_id()
966 }
967
968 pub fn buffer(&self) -> &ModelHandle<MultiBuffer> {
969 &self.buffer
970 }
971
972 pub fn title(&self, cx: &AppContext) -> String {
973 self.buffer().read(cx).title(cx)
974 }
975
976 pub fn snapshot(&mut self, cx: &mut MutableAppContext) -> EditorSnapshot {
977 EditorSnapshot {
978 mode: self.mode,
979 display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
980 scroll_position: self.scroll_position,
981 scroll_top_anchor: self.scroll_top_anchor.clone(),
982 placeholder_text: self.placeholder_text.clone(),
983 is_focused: self
984 .handle
985 .upgrade(cx)
986 .map_or(false, |handle| handle.is_focused(cx)),
987 }
988 }
989
990 pub fn language<'a>(&self, cx: &'a AppContext) -> Option<&'a Arc<Language>> {
991 self.buffer.read(cx).language(cx)
992 }
993
994 fn style(&self, cx: &AppContext) -> EditorStyle {
995 build_style(
996 cx.global::<Settings>(),
997 self.get_field_editor_theme,
998 self.override_text_style.as_deref(),
999 cx,
1000 )
1001 }
1002
1003 pub fn set_placeholder_text(
1004 &mut self,
1005 placeholder_text: impl Into<Arc<str>>,
1006 cx: &mut ViewContext<Self>,
1007 ) {
1008 self.placeholder_text = Some(placeholder_text.into());
1009 cx.notify();
1010 }
1011
1012 pub fn set_vertical_scroll_margin(&mut self, margin_rows: usize, cx: &mut ViewContext<Self>) {
1013 self.vertical_scroll_margin = margin_rows as f32;
1014 cx.notify();
1015 }
1016
1017 pub fn set_scroll_position(&mut self, scroll_position: Vector2F, cx: &mut ViewContext<Self>) {
1018 self.set_scroll_position_internal(scroll_position, true, cx);
1019 }
1020
1021 fn set_scroll_position_internal(
1022 &mut self,
1023 scroll_position: Vector2F,
1024 local: bool,
1025 cx: &mut ViewContext<Self>,
1026 ) {
1027 let map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1028
1029 if scroll_position.y() == 0. {
1030 self.scroll_top_anchor = Anchor::min();
1031 self.scroll_position = scroll_position;
1032 } else {
1033 let scroll_top_buffer_offset =
1034 DisplayPoint::new(scroll_position.y() as u32, 0).to_offset(&map, Bias::Right);
1035 let anchor = map
1036 .buffer_snapshot
1037 .anchor_at(scroll_top_buffer_offset, Bias::Right);
1038 self.scroll_position = vec2f(
1039 scroll_position.x(),
1040 scroll_position.y() - anchor.to_display_point(&map).row() as f32,
1041 );
1042 self.scroll_top_anchor = anchor;
1043 }
1044
1045 cx.emit(Event::ScrollPositionChanged { local });
1046 cx.notify();
1047 }
1048
1049 fn set_scroll_top_anchor(
1050 &mut self,
1051 anchor: Anchor,
1052 position: Vector2F,
1053 cx: &mut ViewContext<Self>,
1054 ) {
1055 self.scroll_top_anchor = anchor;
1056 self.scroll_position = position;
1057 cx.emit(Event::ScrollPositionChanged { local: false });
1058 cx.notify();
1059 }
1060
1061 pub fn set_cursor_shape(&mut self, cursor_shape: CursorShape, cx: &mut ViewContext<Self>) {
1062 self.cursor_shape = cursor_shape;
1063 cx.notify();
1064 }
1065
1066 pub fn scroll_position(&self, cx: &mut ViewContext<Self>) -> Vector2F {
1067 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1068 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor)
1069 }
1070
1071 pub fn clamp_scroll_left(&mut self, max: f32) -> bool {
1072 if max < self.scroll_position.x() {
1073 self.scroll_position.set_x(max);
1074 true
1075 } else {
1076 false
1077 }
1078 }
1079
1080 pub fn autoscroll_vertically(
1081 &mut self,
1082 viewport_height: f32,
1083 line_height: f32,
1084 cx: &mut ViewContext<Self>,
1085 ) -> bool {
1086 let visible_lines = viewport_height / line_height;
1087 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1088 let mut scroll_position =
1089 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor);
1090 let max_scroll_top = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
1091 (display_map.max_point().row() as f32 - visible_lines + 1.).max(0.)
1092 } else {
1093 display_map.max_point().row().saturating_sub(1) as f32
1094 };
1095 if scroll_position.y() > max_scroll_top {
1096 scroll_position.set_y(max_scroll_top);
1097 self.set_scroll_position(scroll_position, cx);
1098 }
1099
1100 let (autoscroll, local) = if let Some(autoscroll) = self.autoscroll_request.take() {
1101 autoscroll
1102 } else {
1103 return false;
1104 };
1105
1106 let first_cursor_top;
1107 let last_cursor_bottom;
1108 if let Some(highlighted_rows) = &self.highlighted_rows {
1109 first_cursor_top = highlighted_rows.start as f32;
1110 last_cursor_bottom = first_cursor_top + 1.;
1111 } else if autoscroll == Autoscroll::Newest {
1112 let newest_selection =
1113 self.newest_selection_with_snapshot::<Point>(&display_map.buffer_snapshot);
1114 first_cursor_top = newest_selection.head().to_display_point(&display_map).row() as f32;
1115 last_cursor_bottom = first_cursor_top + 1.;
1116 } else {
1117 let selections = self.local_selections::<Point>(cx);
1118 first_cursor_top = selections
1119 .first()
1120 .unwrap()
1121 .head()
1122 .to_display_point(&display_map)
1123 .row() as f32;
1124 last_cursor_bottom = selections
1125 .last()
1126 .unwrap()
1127 .head()
1128 .to_display_point(&display_map)
1129 .row() as f32
1130 + 1.0;
1131 }
1132
1133 let margin = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
1134 0.
1135 } else {
1136 ((visible_lines - (last_cursor_bottom - first_cursor_top)) / 2.0).floor()
1137 };
1138 if margin < 0.0 {
1139 return false;
1140 }
1141
1142 match autoscroll {
1143 Autoscroll::Fit | Autoscroll::Newest => {
1144 let margin = margin.min(self.vertical_scroll_margin);
1145 let target_top = (first_cursor_top - margin).max(0.0);
1146 let target_bottom = last_cursor_bottom + margin;
1147 let start_row = scroll_position.y();
1148 let end_row = start_row + visible_lines;
1149
1150 if target_top < start_row {
1151 scroll_position.set_y(target_top);
1152 self.set_scroll_position_internal(scroll_position, local, cx);
1153 } else if target_bottom >= end_row {
1154 scroll_position.set_y(target_bottom - visible_lines);
1155 self.set_scroll_position_internal(scroll_position, local, cx);
1156 }
1157 }
1158 Autoscroll::Center => {
1159 scroll_position.set_y((first_cursor_top - margin).max(0.0));
1160 self.set_scroll_position_internal(scroll_position, local, cx);
1161 }
1162 }
1163
1164 true
1165 }
1166
1167 pub fn autoscroll_horizontally(
1168 &mut self,
1169 start_row: u32,
1170 viewport_width: f32,
1171 scroll_width: f32,
1172 max_glyph_width: f32,
1173 layouts: &[text_layout::Line],
1174 cx: &mut ViewContext<Self>,
1175 ) -> bool {
1176 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1177 let selections = self.local_selections::<Point>(cx);
1178
1179 let mut target_left;
1180 let mut target_right;
1181
1182 if self.highlighted_rows.is_some() {
1183 target_left = 0.0_f32;
1184 target_right = 0.0_f32;
1185 } else {
1186 target_left = std::f32::INFINITY;
1187 target_right = 0.0_f32;
1188 for selection in selections {
1189 let head = selection.head().to_display_point(&display_map);
1190 if head.row() >= start_row && head.row() < start_row + layouts.len() as u32 {
1191 let start_column = head.column().saturating_sub(3);
1192 let end_column = cmp::min(display_map.line_len(head.row()), head.column() + 3);
1193 target_left = target_left.min(
1194 layouts[(head.row() - start_row) as usize]
1195 .x_for_index(start_column as usize),
1196 );
1197 target_right = target_right.max(
1198 layouts[(head.row() - start_row) as usize].x_for_index(end_column as usize)
1199 + max_glyph_width,
1200 );
1201 }
1202 }
1203 }
1204
1205 target_right = target_right.min(scroll_width);
1206
1207 if target_right - target_left > viewport_width {
1208 return false;
1209 }
1210
1211 let scroll_left = self.scroll_position.x() * max_glyph_width;
1212 let scroll_right = scroll_left + viewport_width;
1213
1214 if target_left < scroll_left {
1215 self.scroll_position.set_x(target_left / max_glyph_width);
1216 true
1217 } else if target_right > scroll_right {
1218 self.scroll_position
1219 .set_x((target_right - viewport_width) / max_glyph_width);
1220 true
1221 } else {
1222 false
1223 }
1224 }
1225
1226 pub fn move_selections(
1227 &mut self,
1228 cx: &mut ViewContext<Self>,
1229 move_selection: impl Fn(&DisplaySnapshot, &mut Selection<DisplayPoint>),
1230 ) {
1231 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1232 let selections = self
1233 .local_selections::<Point>(cx)
1234 .into_iter()
1235 .map(|selection| {
1236 let mut selection = Selection {
1237 id: selection.id,
1238 start: selection.start.to_display_point(&display_map),
1239 end: selection.end.to_display_point(&display_map),
1240 reversed: selection.reversed,
1241 goal: selection.goal,
1242 };
1243 move_selection(&display_map, &mut selection);
1244 Selection {
1245 id: selection.id,
1246 start: selection.start.to_point(&display_map),
1247 end: selection.end.to_point(&display_map),
1248 reversed: selection.reversed,
1249 goal: selection.goal,
1250 }
1251 })
1252 .collect();
1253 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1254 }
1255
1256 pub fn move_selection_heads(
1257 &mut self,
1258 cx: &mut ViewContext<Self>,
1259 update_head: impl Fn(
1260 &DisplaySnapshot,
1261 DisplayPoint,
1262 SelectionGoal,
1263 ) -> (DisplayPoint, SelectionGoal),
1264 ) {
1265 self.move_selections(cx, |map, selection| {
1266 let (new_head, new_goal) = update_head(map, selection.head(), selection.goal);
1267 selection.set_head(new_head, new_goal);
1268 });
1269 }
1270
1271 pub fn move_cursors(
1272 &mut self,
1273 cx: &mut ViewContext<Self>,
1274 update_cursor_position: impl Fn(
1275 &DisplaySnapshot,
1276 DisplayPoint,
1277 SelectionGoal,
1278 ) -> (DisplayPoint, SelectionGoal),
1279 ) {
1280 self.move_selections(cx, |map, selection| {
1281 let (cursor, new_goal) = update_cursor_position(map, selection.head(), selection.goal);
1282 selection.collapse_to(cursor, new_goal)
1283 });
1284 }
1285
1286 fn select(&mut self, Select(phase): &Select, cx: &mut ViewContext<Self>) {
1287 self.hide_context_menu(cx);
1288
1289 match phase {
1290 SelectPhase::Begin {
1291 position,
1292 add,
1293 click_count,
1294 } => self.begin_selection(*position, *add, *click_count, cx),
1295 SelectPhase::BeginColumnar {
1296 position,
1297 overshoot,
1298 } => self.begin_columnar_selection(*position, *overshoot, cx),
1299 SelectPhase::Extend {
1300 position,
1301 click_count,
1302 } => self.extend_selection(*position, *click_count, cx),
1303 SelectPhase::Update {
1304 position,
1305 overshoot,
1306 scroll_position,
1307 } => self.update_selection(*position, *overshoot, *scroll_position, cx),
1308 SelectPhase::End => self.end_selection(cx),
1309 }
1310 }
1311
1312 fn extend_selection(
1313 &mut self,
1314 position: DisplayPoint,
1315 click_count: usize,
1316 cx: &mut ViewContext<Self>,
1317 ) {
1318 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1319 let tail = self
1320 .newest_selection_with_snapshot::<usize>(&display_map.buffer_snapshot)
1321 .tail();
1322 self.begin_selection(position, false, click_count, cx);
1323
1324 let position = position.to_offset(&display_map, Bias::Left);
1325 let tail_anchor = display_map.buffer_snapshot.anchor_before(tail);
1326 let mut pending = self.pending_selection.clone().unwrap();
1327
1328 if position >= tail {
1329 pending.selection.start = tail_anchor.clone();
1330 } else {
1331 pending.selection.end = tail_anchor.clone();
1332 pending.selection.reversed = true;
1333 }
1334
1335 match &mut pending.mode {
1336 SelectMode::Word(range) | SelectMode::Line(range) => {
1337 *range = tail_anchor.clone()..tail_anchor
1338 }
1339 _ => {}
1340 }
1341
1342 self.set_selections(self.selections.clone(), Some(pending), true, cx);
1343 }
1344
1345 fn begin_selection(
1346 &mut self,
1347 position: DisplayPoint,
1348 add: bool,
1349 click_count: usize,
1350 cx: &mut ViewContext<Self>,
1351 ) {
1352 if !self.focused {
1353 cx.focus_self();
1354 cx.emit(Event::Activate);
1355 }
1356
1357 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1358 let buffer = &display_map.buffer_snapshot;
1359 let newest_selection = self.newest_anchor_selection().clone();
1360
1361 let start;
1362 let end;
1363 let mode;
1364 match click_count {
1365 1 => {
1366 start = buffer.anchor_before(position.to_point(&display_map));
1367 end = start.clone();
1368 mode = SelectMode::Character;
1369 }
1370 2 => {
1371 let range = movement::surrounding_word(&display_map, position);
1372 start = buffer.anchor_before(range.start.to_point(&display_map));
1373 end = buffer.anchor_before(range.end.to_point(&display_map));
1374 mode = SelectMode::Word(start.clone()..end.clone());
1375 }
1376 3 => {
1377 let position = display_map
1378 .clip_point(position, Bias::Left)
1379 .to_point(&display_map);
1380 let line_start = display_map.prev_line_boundary(position).0;
1381 let next_line_start = buffer.clip_point(
1382 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1383 Bias::Left,
1384 );
1385 start = buffer.anchor_before(line_start);
1386 end = buffer.anchor_before(next_line_start);
1387 mode = SelectMode::Line(start.clone()..end.clone());
1388 }
1389 _ => {
1390 start = buffer.anchor_before(0);
1391 end = buffer.anchor_before(buffer.len());
1392 mode = SelectMode::All;
1393 }
1394 }
1395
1396 let selection = Selection {
1397 id: post_inc(&mut self.next_selection_id),
1398 start,
1399 end,
1400 reversed: false,
1401 goal: SelectionGoal::None,
1402 };
1403
1404 let mut selections;
1405 if add {
1406 selections = self.selections.clone();
1407 // Remove the newest selection if it was added due to a previous mouse up
1408 // within this multi-click.
1409 if click_count > 1 {
1410 selections = self
1411 .selections
1412 .iter()
1413 .filter(|selection| selection.id != newest_selection.id)
1414 .cloned()
1415 .collect();
1416 }
1417 } else {
1418 selections = Arc::from([]);
1419 }
1420 self.set_selections(
1421 selections,
1422 Some(PendingSelection { selection, mode }),
1423 true,
1424 cx,
1425 );
1426
1427 cx.notify();
1428 }
1429
1430 fn begin_columnar_selection(
1431 &mut self,
1432 position: DisplayPoint,
1433 overshoot: u32,
1434 cx: &mut ViewContext<Self>,
1435 ) {
1436 if !self.focused {
1437 cx.focus_self();
1438 cx.emit(Event::Activate);
1439 }
1440
1441 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1442 let tail = self
1443 .newest_selection_with_snapshot::<Point>(&display_map.buffer_snapshot)
1444 .tail();
1445 self.columnar_selection_tail = Some(display_map.buffer_snapshot.anchor_before(tail));
1446
1447 self.select_columns(
1448 tail.to_display_point(&display_map),
1449 position,
1450 overshoot,
1451 &display_map,
1452 cx,
1453 );
1454 }
1455
1456 fn update_selection(
1457 &mut self,
1458 position: DisplayPoint,
1459 overshoot: u32,
1460 scroll_position: Vector2F,
1461 cx: &mut ViewContext<Self>,
1462 ) {
1463 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1464
1465 if let Some(tail) = self.columnar_selection_tail.as_ref() {
1466 let tail = tail.to_display_point(&display_map);
1467 self.select_columns(tail, position, overshoot, &display_map, cx);
1468 } else if let Some(mut pending) = self.pending_selection.clone() {
1469 let buffer = self.buffer.read(cx).snapshot(cx);
1470 let head;
1471 let tail;
1472 match &pending.mode {
1473 SelectMode::Character => {
1474 head = position.to_point(&display_map);
1475 tail = pending.selection.tail().to_point(&buffer);
1476 }
1477 SelectMode::Word(original_range) => {
1478 let original_display_range = original_range.start.to_display_point(&display_map)
1479 ..original_range.end.to_display_point(&display_map);
1480 let original_buffer_range = original_display_range.start.to_point(&display_map)
1481 ..original_display_range.end.to_point(&display_map);
1482 if movement::is_inside_word(&display_map, position)
1483 || original_display_range.contains(&position)
1484 {
1485 let word_range = movement::surrounding_word(&display_map, position);
1486 if word_range.start < original_display_range.start {
1487 head = word_range.start.to_point(&display_map);
1488 } else {
1489 head = word_range.end.to_point(&display_map);
1490 }
1491 } else {
1492 head = position.to_point(&display_map);
1493 }
1494
1495 if head <= original_buffer_range.start {
1496 tail = original_buffer_range.end;
1497 } else {
1498 tail = original_buffer_range.start;
1499 }
1500 }
1501 SelectMode::Line(original_range) => {
1502 let original_range = original_range.to_point(&display_map.buffer_snapshot);
1503
1504 let position = display_map
1505 .clip_point(position, Bias::Left)
1506 .to_point(&display_map);
1507 let line_start = display_map.prev_line_boundary(position).0;
1508 let next_line_start = buffer.clip_point(
1509 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1510 Bias::Left,
1511 );
1512
1513 if line_start < original_range.start {
1514 head = line_start
1515 } else {
1516 head = next_line_start
1517 }
1518
1519 if head <= original_range.start {
1520 tail = original_range.end;
1521 } else {
1522 tail = original_range.start;
1523 }
1524 }
1525 SelectMode::All => {
1526 return;
1527 }
1528 };
1529
1530 if head < tail {
1531 pending.selection.start = buffer.anchor_before(head);
1532 pending.selection.end = buffer.anchor_before(tail);
1533 pending.selection.reversed = true;
1534 } else {
1535 pending.selection.start = buffer.anchor_before(tail);
1536 pending.selection.end = buffer.anchor_before(head);
1537 pending.selection.reversed = false;
1538 }
1539 self.set_selections(self.selections.clone(), Some(pending), true, cx);
1540 } else {
1541 log::error!("update_selection dispatched with no pending selection");
1542 return;
1543 }
1544
1545 self.set_scroll_position(scroll_position, cx);
1546 cx.notify();
1547 }
1548
1549 fn end_selection(&mut self, cx: &mut ViewContext<Self>) {
1550 self.columnar_selection_tail.take();
1551 if self.pending_selection.is_some() {
1552 let selections = self.local_selections::<usize>(cx);
1553 self.update_selections(selections, None, cx);
1554 }
1555 }
1556
1557 fn select_columns(
1558 &mut self,
1559 tail: DisplayPoint,
1560 head: DisplayPoint,
1561 overshoot: u32,
1562 display_map: &DisplaySnapshot,
1563 cx: &mut ViewContext<Self>,
1564 ) {
1565 let start_row = cmp::min(tail.row(), head.row());
1566 let end_row = cmp::max(tail.row(), head.row());
1567 let start_column = cmp::min(tail.column(), head.column() + overshoot);
1568 let end_column = cmp::max(tail.column(), head.column() + overshoot);
1569 let reversed = start_column < tail.column();
1570
1571 let selections = (start_row..=end_row)
1572 .filter_map(|row| {
1573 if start_column <= display_map.line_len(row) && !display_map.is_block_line(row) {
1574 let start = display_map
1575 .clip_point(DisplayPoint::new(row, start_column), Bias::Left)
1576 .to_point(&display_map);
1577 let end = display_map
1578 .clip_point(DisplayPoint::new(row, end_column), Bias::Right)
1579 .to_point(&display_map);
1580 Some(Selection {
1581 id: post_inc(&mut self.next_selection_id),
1582 start,
1583 end,
1584 reversed,
1585 goal: SelectionGoal::None,
1586 })
1587 } else {
1588 None
1589 }
1590 })
1591 .collect::<Vec<_>>();
1592
1593 self.update_selections(selections, None, cx);
1594 cx.notify();
1595 }
1596
1597 pub fn is_selecting(&self) -> bool {
1598 self.pending_selection.is_some() || self.columnar_selection_tail.is_some()
1599 }
1600
1601 pub fn cancel(&mut self, _: &Cancel, cx: &mut ViewContext<Self>) {
1602 if self.take_rename(false, cx).is_some() {
1603 return;
1604 }
1605
1606 if self.hide_context_menu(cx).is_some() {
1607 return;
1608 }
1609
1610 if self.snippet_stack.pop().is_some() {
1611 return;
1612 }
1613
1614 if self.mode != EditorMode::Full {
1615 cx.propagate_action();
1616 return;
1617 }
1618
1619 if self.active_diagnostics.is_some() {
1620 self.dismiss_diagnostics(cx);
1621 } else if let Some(pending) = self.pending_selection.clone() {
1622 let mut selections = self.selections.clone();
1623 if selections.is_empty() {
1624 selections = Arc::from([pending.selection]);
1625 }
1626 self.set_selections(selections, None, true, cx);
1627 self.request_autoscroll(Autoscroll::Fit, cx);
1628 } else {
1629 let mut oldest_selection = self.oldest_selection::<usize>(&cx);
1630 if self.selection_count() == 1 {
1631 if oldest_selection.is_empty() {
1632 cx.propagate_action();
1633 return;
1634 }
1635
1636 oldest_selection.start = oldest_selection.head().clone();
1637 oldest_selection.end = oldest_selection.head().clone();
1638 }
1639 self.update_selections(vec![oldest_selection], Some(Autoscroll::Fit), cx);
1640 }
1641 }
1642
1643 #[cfg(any(test, feature = "test-support"))]
1644 pub fn selected_ranges<D: TextDimension + Ord + Sub<D, Output = D>>(
1645 &self,
1646 cx: &AppContext,
1647 ) -> Vec<Range<D>> {
1648 self.local_selections::<D>(cx)
1649 .iter()
1650 .map(|s| {
1651 if s.reversed {
1652 s.end.clone()..s.start.clone()
1653 } else {
1654 s.start.clone()..s.end.clone()
1655 }
1656 })
1657 .collect()
1658 }
1659
1660 #[cfg(any(test, feature = "test-support"))]
1661 pub fn selected_display_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
1662 let display_map = self
1663 .display_map
1664 .update(cx, |display_map, cx| display_map.snapshot(cx));
1665 self.selections
1666 .iter()
1667 .chain(
1668 self.pending_selection
1669 .as_ref()
1670 .map(|pending| &pending.selection),
1671 )
1672 .map(|s| {
1673 if s.reversed {
1674 s.end.to_display_point(&display_map)..s.start.to_display_point(&display_map)
1675 } else {
1676 s.start.to_display_point(&display_map)..s.end.to_display_point(&display_map)
1677 }
1678 })
1679 .collect()
1680 }
1681
1682 pub fn select_ranges<I, T>(
1683 &mut self,
1684 ranges: I,
1685 autoscroll: Option<Autoscroll>,
1686 cx: &mut ViewContext<Self>,
1687 ) where
1688 I: IntoIterator<Item = Range<T>>,
1689 T: ToOffset,
1690 {
1691 let buffer = self.buffer.read(cx).snapshot(cx);
1692 let selections = ranges
1693 .into_iter()
1694 .map(|range| {
1695 let mut start = range.start.to_offset(&buffer);
1696 let mut end = range.end.to_offset(&buffer);
1697 let reversed = if start > end {
1698 mem::swap(&mut start, &mut end);
1699 true
1700 } else {
1701 false
1702 };
1703 Selection {
1704 id: post_inc(&mut self.next_selection_id),
1705 start,
1706 end,
1707 reversed,
1708 goal: SelectionGoal::None,
1709 }
1710 })
1711 .collect::<Vec<_>>();
1712 self.update_selections(selections, autoscroll, cx);
1713 }
1714
1715 #[cfg(any(test, feature = "test-support"))]
1716 pub fn select_display_ranges<'a, T>(&mut self, ranges: T, cx: &mut ViewContext<Self>)
1717 where
1718 T: IntoIterator<Item = &'a Range<DisplayPoint>>,
1719 {
1720 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1721 let selections = ranges
1722 .into_iter()
1723 .map(|range| {
1724 let mut start = range.start;
1725 let mut end = range.end;
1726 let reversed = if start > end {
1727 mem::swap(&mut start, &mut end);
1728 true
1729 } else {
1730 false
1731 };
1732 Selection {
1733 id: post_inc(&mut self.next_selection_id),
1734 start: start.to_point(&display_map),
1735 end: end.to_point(&display_map),
1736 reversed,
1737 goal: SelectionGoal::None,
1738 }
1739 })
1740 .collect();
1741 self.update_selections(selections, None, cx);
1742 }
1743
1744 pub fn handle_input(&mut self, action: &Input, cx: &mut ViewContext<Self>) {
1745 let text = action.0.as_ref();
1746 if !self.skip_autoclose_end(text, cx) {
1747 self.transact(cx, |this, cx| {
1748 if !this.surround_with_bracket_pair(text, cx) {
1749 this.insert(text, cx);
1750 this.autoclose_bracket_pairs(cx);
1751 }
1752 });
1753 self.trigger_completion_on_input(text, cx);
1754 }
1755 }
1756
1757 pub fn newline(&mut self, _: &Newline, cx: &mut ViewContext<Self>) {
1758 self.transact(cx, |this, cx| {
1759 let mut old_selections = SmallVec::<[_; 32]>::new();
1760 {
1761 let selections = this.local_selections::<usize>(cx);
1762 let buffer = this.buffer.read(cx).snapshot(cx);
1763 for selection in selections.iter() {
1764 let start_point = selection.start.to_point(&buffer);
1765 let indent = buffer
1766 .indent_column_for_line(start_point.row)
1767 .min(start_point.column);
1768 let start = selection.start;
1769 let end = selection.end;
1770
1771 let mut insert_extra_newline = false;
1772 if let Some(language) = buffer.language() {
1773 let leading_whitespace_len = buffer
1774 .reversed_chars_at(start)
1775 .take_while(|c| c.is_whitespace() && *c != '\n')
1776 .map(|c| c.len_utf8())
1777 .sum::<usize>();
1778
1779 let trailing_whitespace_len = buffer
1780 .chars_at(end)
1781 .take_while(|c| c.is_whitespace() && *c != '\n')
1782 .map(|c| c.len_utf8())
1783 .sum::<usize>();
1784
1785 insert_extra_newline = language.brackets().iter().any(|pair| {
1786 let pair_start = pair.start.trim_end();
1787 let pair_end = pair.end.trim_start();
1788
1789 pair.newline
1790 && buffer.contains_str_at(end + trailing_whitespace_len, pair_end)
1791 && buffer.contains_str_at(
1792 (start - leading_whitespace_len)
1793 .saturating_sub(pair_start.len()),
1794 pair_start,
1795 )
1796 });
1797 }
1798
1799 old_selections.push((
1800 selection.id,
1801 buffer.anchor_after(end),
1802 start..end,
1803 indent,
1804 insert_extra_newline,
1805 ));
1806 }
1807 }
1808
1809 this.buffer.update(cx, |buffer, cx| {
1810 let mut delta = 0_isize;
1811 let mut pending_edit: Option<PendingEdit> = None;
1812 for (_, _, range, indent, insert_extra_newline) in &old_selections {
1813 if pending_edit.as_ref().map_or(false, |pending| {
1814 pending.indent != *indent
1815 || pending.insert_extra_newline != *insert_extra_newline
1816 }) {
1817 let pending = pending_edit.take().unwrap();
1818 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1819 new_text.push('\n');
1820 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1821 if pending.insert_extra_newline {
1822 new_text = new_text.repeat(2);
1823 }
1824 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1825 delta += pending.delta;
1826 }
1827
1828 let start = (range.start as isize + delta) as usize;
1829 let end = (range.end as isize + delta) as usize;
1830 let mut text_len = *indent as usize + 1;
1831 if *insert_extra_newline {
1832 text_len *= 2;
1833 }
1834
1835 let pending = pending_edit.get_or_insert_with(Default::default);
1836 pending.delta += text_len as isize - (end - start) as isize;
1837 pending.indent = *indent;
1838 pending.insert_extra_newline = *insert_extra_newline;
1839 pending.ranges.push(start..end);
1840 }
1841
1842 let pending = pending_edit.unwrap();
1843 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1844 new_text.push('\n');
1845 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1846 if pending.insert_extra_newline {
1847 new_text = new_text.repeat(2);
1848 }
1849 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1850
1851 let buffer = buffer.read(cx);
1852 this.selections = this
1853 .selections
1854 .iter()
1855 .cloned()
1856 .zip(old_selections)
1857 .map(
1858 |(mut new_selection, (_, end_anchor, _, _, insert_extra_newline))| {
1859 let mut cursor = end_anchor.to_point(&buffer);
1860 if insert_extra_newline {
1861 cursor.row -= 1;
1862 cursor.column = buffer.line_len(cursor.row);
1863 }
1864 let anchor = buffer.anchor_after(cursor);
1865 new_selection.start = anchor.clone();
1866 new_selection.end = anchor;
1867 new_selection
1868 },
1869 )
1870 .collect();
1871 });
1872
1873 this.request_autoscroll(Autoscroll::Fit, cx);
1874 });
1875
1876 #[derive(Default)]
1877 struct PendingEdit {
1878 indent: u32,
1879 insert_extra_newline: bool,
1880 delta: isize,
1881 ranges: SmallVec<[Range<usize>; 32]>,
1882 }
1883 }
1884
1885 pub fn insert(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1886 self.transact(cx, |this, cx| {
1887 let old_selections = this.local_selections::<usize>(cx);
1888 let selection_anchors = this.buffer.update(cx, |buffer, cx| {
1889 let anchors = {
1890 let snapshot = buffer.read(cx);
1891 old_selections
1892 .iter()
1893 .map(|s| (s.id, s.goal, snapshot.anchor_after(s.end)))
1894 .collect::<Vec<_>>()
1895 };
1896 let edit_ranges = old_selections.iter().map(|s| s.start..s.end);
1897 buffer.edit_with_autoindent(edit_ranges, text, cx);
1898 anchors
1899 });
1900
1901 let selections = {
1902 let snapshot = this.buffer.read(cx).read(cx);
1903 selection_anchors
1904 .into_iter()
1905 .map(|(id, goal, position)| {
1906 let position = position.to_offset(&snapshot);
1907 Selection {
1908 id,
1909 start: position,
1910 end: position,
1911 goal,
1912 reversed: false,
1913 }
1914 })
1915 .collect()
1916 };
1917 this.update_selections(selections, Some(Autoscroll::Fit), cx);
1918 });
1919 }
1920
1921 fn trigger_completion_on_input(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1922 let selection = self.newest_anchor_selection();
1923 if self
1924 .buffer
1925 .read(cx)
1926 .is_completion_trigger(selection.head(), text, cx)
1927 {
1928 self.show_completions(&ShowCompletions, cx);
1929 } else {
1930 self.hide_context_menu(cx);
1931 }
1932 }
1933
1934 fn surround_with_bracket_pair(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
1935 let snapshot = self.buffer.read(cx).snapshot(cx);
1936 if let Some(pair) = snapshot
1937 .language()
1938 .and_then(|language| language.brackets().iter().find(|b| b.start == text))
1939 .cloned()
1940 {
1941 if self
1942 .local_selections::<usize>(cx)
1943 .iter()
1944 .any(|selection| selection.is_empty())
1945 {
1946 false
1947 } else {
1948 let mut selections = self.selections.to_vec();
1949 for selection in &mut selections {
1950 selection.end = selection.end.bias_left(&snapshot);
1951 }
1952 drop(snapshot);
1953
1954 self.buffer.update(cx, |buffer, cx| {
1955 buffer.edit(
1956 selections.iter().map(|s| s.start.clone()..s.start.clone()),
1957 &pair.start,
1958 cx,
1959 );
1960 buffer.edit(
1961 selections.iter().map(|s| s.end.clone()..s.end.clone()),
1962 &pair.end,
1963 cx,
1964 );
1965 });
1966
1967 let snapshot = self.buffer.read(cx).read(cx);
1968 for selection in &mut selections {
1969 selection.end = selection.end.bias_right(&snapshot);
1970 }
1971 drop(snapshot);
1972
1973 self.set_selections(selections.into(), None, true, cx);
1974 true
1975 }
1976 } else {
1977 false
1978 }
1979 }
1980
1981 fn autoclose_bracket_pairs(&mut self, cx: &mut ViewContext<Self>) {
1982 let selections = self.local_selections::<usize>(cx);
1983 let mut bracket_pair_state = None;
1984 let mut new_selections = None;
1985 self.buffer.update(cx, |buffer, cx| {
1986 let mut snapshot = buffer.snapshot(cx);
1987 let left_biased_selections = selections
1988 .iter()
1989 .map(|selection| Selection {
1990 id: selection.id,
1991 start: snapshot.anchor_before(selection.start),
1992 end: snapshot.anchor_before(selection.end),
1993 reversed: selection.reversed,
1994 goal: selection.goal,
1995 })
1996 .collect::<Vec<_>>();
1997
1998 let autoclose_pair = snapshot.language().and_then(|language| {
1999 let first_selection_start = selections.first().unwrap().start;
2000 let pair = language.brackets().iter().find(|pair| {
2001 snapshot.contains_str_at(
2002 first_selection_start.saturating_sub(pair.start.len()),
2003 &pair.start,
2004 )
2005 });
2006 pair.and_then(|pair| {
2007 let should_autoclose = selections.iter().all(|selection| {
2008 // Ensure all selections are parked at the end of a pair start.
2009 if snapshot.contains_str_at(
2010 selection.start.saturating_sub(pair.start.len()),
2011 &pair.start,
2012 ) {
2013 snapshot
2014 .chars_at(selection.start)
2015 .next()
2016 .map_or(true, |c| language.should_autoclose_before(c))
2017 } else {
2018 false
2019 }
2020 });
2021
2022 if should_autoclose {
2023 Some(pair.clone())
2024 } else {
2025 None
2026 }
2027 })
2028 });
2029
2030 if let Some(pair) = autoclose_pair {
2031 let selection_ranges = selections
2032 .iter()
2033 .map(|selection| {
2034 let start = selection.start.to_offset(&snapshot);
2035 start..start
2036 })
2037 .collect::<SmallVec<[_; 32]>>();
2038
2039 buffer.edit(selection_ranges, &pair.end, cx);
2040 snapshot = buffer.snapshot(cx);
2041
2042 new_selections = Some(
2043 self.resolve_selections::<usize, _>(left_biased_selections.iter(), &snapshot)
2044 .collect::<Vec<_>>(),
2045 );
2046
2047 if pair.end.len() == 1 {
2048 let mut delta = 0;
2049 bracket_pair_state = Some(BracketPairState {
2050 ranges: selections
2051 .iter()
2052 .map(move |selection| {
2053 let offset = selection.start + delta;
2054 delta += 1;
2055 snapshot.anchor_before(offset)..snapshot.anchor_after(offset)
2056 })
2057 .collect(),
2058 pair,
2059 });
2060 }
2061 }
2062 });
2063
2064 if let Some(new_selections) = new_selections {
2065 self.update_selections(new_selections, None, cx);
2066 }
2067 if let Some(bracket_pair_state) = bracket_pair_state {
2068 self.autoclose_stack.push(bracket_pair_state);
2069 }
2070 }
2071
2072 fn skip_autoclose_end(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
2073 let old_selections = self.local_selections::<usize>(cx);
2074 let autoclose_pair = if let Some(autoclose_pair) = self.autoclose_stack.last() {
2075 autoclose_pair
2076 } else {
2077 return false;
2078 };
2079 if text != autoclose_pair.pair.end {
2080 return false;
2081 }
2082
2083 debug_assert_eq!(old_selections.len(), autoclose_pair.ranges.len());
2084
2085 let buffer = self.buffer.read(cx).snapshot(cx);
2086 if old_selections
2087 .iter()
2088 .zip(autoclose_pair.ranges.iter().map(|r| r.to_offset(&buffer)))
2089 .all(|(selection, autoclose_range)| {
2090 let autoclose_range_end = autoclose_range.end.to_offset(&buffer);
2091 selection.is_empty() && selection.start == autoclose_range_end
2092 })
2093 {
2094 let new_selections = old_selections
2095 .into_iter()
2096 .map(|selection| {
2097 let cursor = selection.start + 1;
2098 Selection {
2099 id: selection.id,
2100 start: cursor,
2101 end: cursor,
2102 reversed: false,
2103 goal: SelectionGoal::None,
2104 }
2105 })
2106 .collect();
2107 self.autoclose_stack.pop();
2108 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2109 true
2110 } else {
2111 false
2112 }
2113 }
2114
2115 fn completion_query(buffer: &MultiBufferSnapshot, position: impl ToOffset) -> Option<String> {
2116 let offset = position.to_offset(buffer);
2117 let (word_range, kind) = buffer.surrounding_word(offset);
2118 if offset > word_range.start && kind == Some(CharKind::Word) {
2119 Some(
2120 buffer
2121 .text_for_range(word_range.start..offset)
2122 .collect::<String>(),
2123 )
2124 } else {
2125 None
2126 }
2127 }
2128
2129 fn show_completions(&mut self, _: &ShowCompletions, cx: &mut ViewContext<Self>) {
2130 if self.pending_rename.is_some() {
2131 return;
2132 }
2133
2134 let project = if let Some(project) = self.project.clone() {
2135 project
2136 } else {
2137 return;
2138 };
2139
2140 let position = self.newest_anchor_selection().head();
2141 let (buffer, buffer_position) = if let Some(output) = self
2142 .buffer
2143 .read(cx)
2144 .text_anchor_for_position(position.clone(), cx)
2145 {
2146 output
2147 } else {
2148 return;
2149 };
2150
2151 let query = Self::completion_query(&self.buffer.read(cx).read(cx), position.clone());
2152 let completions = project.update(cx, |project, cx| {
2153 project.completions(&buffer, buffer_position.clone(), cx)
2154 });
2155
2156 let id = post_inc(&mut self.next_completion_id);
2157 let task = cx.spawn_weak(|this, mut cx| {
2158 async move {
2159 let completions = completions.await?;
2160 if completions.is_empty() {
2161 return Ok(());
2162 }
2163
2164 let mut menu = CompletionsMenu {
2165 id,
2166 initial_position: position,
2167 match_candidates: completions
2168 .iter()
2169 .enumerate()
2170 .map(|(id, completion)| {
2171 StringMatchCandidate::new(
2172 id,
2173 completion.label.text[completion.label.filter_range.clone()].into(),
2174 )
2175 })
2176 .collect(),
2177 buffer,
2178 completions: completions.into(),
2179 matches: Vec::new().into(),
2180 selected_item: 0,
2181 list: Default::default(),
2182 };
2183
2184 menu.filter(query.as_deref(), cx.background()).await;
2185
2186 if let Some(this) = this.upgrade(&cx) {
2187 this.update(&mut cx, |this, cx| {
2188 match this.context_menu.as_ref() {
2189 None => {}
2190 Some(ContextMenu::Completions(prev_menu)) => {
2191 if prev_menu.id > menu.id {
2192 return;
2193 }
2194 }
2195 _ => return,
2196 }
2197
2198 this.completion_tasks.retain(|(id, _)| *id > menu.id);
2199 if this.focused {
2200 this.show_context_menu(ContextMenu::Completions(menu), cx);
2201 }
2202
2203 cx.notify();
2204 });
2205 }
2206 Ok::<_, anyhow::Error>(())
2207 }
2208 .log_err()
2209 });
2210 self.completion_tasks.push((id, task));
2211 }
2212
2213 pub fn confirm_completion(
2214 &mut self,
2215 ConfirmCompletion(completion_ix): &ConfirmCompletion,
2216 cx: &mut ViewContext<Self>,
2217 ) -> Option<Task<Result<()>>> {
2218 use language::ToOffset as _;
2219
2220 let completions_menu = if let ContextMenu::Completions(menu) = self.hide_context_menu(cx)? {
2221 menu
2222 } else {
2223 return None;
2224 };
2225
2226 let mat = completions_menu
2227 .matches
2228 .get(completion_ix.unwrap_or(completions_menu.selected_item))?;
2229 let buffer_handle = completions_menu.buffer;
2230 let completion = completions_menu.completions.get(mat.candidate_id)?;
2231
2232 let snippet;
2233 let text;
2234 if completion.is_snippet() {
2235 snippet = Some(Snippet::parse(&completion.new_text).log_err()?);
2236 text = snippet.as_ref().unwrap().text.clone();
2237 } else {
2238 snippet = None;
2239 text = completion.new_text.clone();
2240 };
2241 let buffer = buffer_handle.read(cx);
2242 let old_range = completion.old_range.to_offset(&buffer);
2243 let old_text = buffer.text_for_range(old_range.clone()).collect::<String>();
2244
2245 let selections = self.local_selections::<usize>(cx);
2246 let newest_selection = self.newest_anchor_selection();
2247 if newest_selection.start.buffer_id != Some(buffer_handle.id()) {
2248 return None;
2249 }
2250
2251 let lookbehind = newest_selection
2252 .start
2253 .text_anchor
2254 .to_offset(buffer)
2255 .saturating_sub(old_range.start);
2256 let lookahead = old_range
2257 .end
2258 .saturating_sub(newest_selection.end.text_anchor.to_offset(buffer));
2259 let mut common_prefix_len = old_text
2260 .bytes()
2261 .zip(text.bytes())
2262 .take_while(|(a, b)| a == b)
2263 .count();
2264
2265 let snapshot = self.buffer.read(cx).snapshot(cx);
2266 let mut ranges = Vec::new();
2267 for selection in &selections {
2268 if snapshot.contains_str_at(selection.start.saturating_sub(lookbehind), &old_text) {
2269 let start = selection.start.saturating_sub(lookbehind);
2270 let end = selection.end + lookahead;
2271 ranges.push(start + common_prefix_len..end);
2272 } else {
2273 common_prefix_len = 0;
2274 ranges.clear();
2275 ranges.extend(selections.iter().map(|s| {
2276 if s.id == newest_selection.id {
2277 old_range.clone()
2278 } else {
2279 s.start..s.end
2280 }
2281 }));
2282 break;
2283 }
2284 }
2285 let text = &text[common_prefix_len..];
2286
2287 self.transact(cx, |this, cx| {
2288 if let Some(mut snippet) = snippet {
2289 snippet.text = text.to_string();
2290 for tabstop in snippet.tabstops.iter_mut().flatten() {
2291 tabstop.start -= common_prefix_len as isize;
2292 tabstop.end -= common_prefix_len as isize;
2293 }
2294
2295 this.insert_snippet(&ranges, snippet, cx).log_err();
2296 } else {
2297 this.buffer.update(cx, |buffer, cx| {
2298 buffer.edit_with_autoindent(ranges, text, cx);
2299 });
2300 }
2301 });
2302
2303 let project = self.project.clone()?;
2304 let apply_edits = project.update(cx, |project, cx| {
2305 project.apply_additional_edits_for_completion(
2306 buffer_handle,
2307 completion.clone(),
2308 true,
2309 cx,
2310 )
2311 });
2312 Some(cx.foreground().spawn(async move {
2313 apply_edits.await?;
2314 Ok(())
2315 }))
2316 }
2317
2318 pub fn toggle_code_actions(
2319 &mut self,
2320 &ToggleCodeActions(deployed_from_indicator): &ToggleCodeActions,
2321 cx: &mut ViewContext<Self>,
2322 ) {
2323 if matches!(
2324 self.context_menu.as_ref(),
2325 Some(ContextMenu::CodeActions(_))
2326 ) {
2327 self.context_menu.take();
2328 cx.notify();
2329 return;
2330 }
2331
2332 let mut task = self.code_actions_task.take();
2333 cx.spawn_weak(|this, mut cx| async move {
2334 while let Some(prev_task) = task {
2335 prev_task.await;
2336 task = this
2337 .upgrade(&cx)
2338 .and_then(|this| this.update(&mut cx, |this, _| this.code_actions_task.take()));
2339 }
2340
2341 if let Some(this) = this.upgrade(&cx) {
2342 this.update(&mut cx, |this, cx| {
2343 if this.focused {
2344 if let Some((buffer, actions)) = this.available_code_actions.clone() {
2345 this.show_context_menu(
2346 ContextMenu::CodeActions(CodeActionsMenu {
2347 buffer,
2348 actions,
2349 selected_item: Default::default(),
2350 list: Default::default(),
2351 deployed_from_indicator,
2352 }),
2353 cx,
2354 );
2355 }
2356 }
2357 })
2358 }
2359 Ok::<_, anyhow::Error>(())
2360 })
2361 .detach_and_log_err(cx);
2362 }
2363
2364 pub fn confirm_code_action(
2365 workspace: &mut Workspace,
2366 ConfirmCodeAction(action_ix): &ConfirmCodeAction,
2367 cx: &mut ViewContext<Workspace>,
2368 ) -> Option<Task<Result<()>>> {
2369 let editor = workspace.active_item(cx)?.act_as::<Editor>(cx)?;
2370 let actions_menu = if let ContextMenu::CodeActions(menu) =
2371 editor.update(cx, |editor, cx| editor.hide_context_menu(cx))?
2372 {
2373 menu
2374 } else {
2375 return None;
2376 };
2377 let action_ix = action_ix.unwrap_or(actions_menu.selected_item);
2378 let action = actions_menu.actions.get(action_ix)?.clone();
2379 let title = action.lsp_action.title.clone();
2380 let buffer = actions_menu.buffer;
2381
2382 let apply_code_actions = workspace.project().clone().update(cx, |project, cx| {
2383 project.apply_code_action(buffer, action, true, cx)
2384 });
2385 Some(cx.spawn(|workspace, cx| async move {
2386 let project_transaction = apply_code_actions.await?;
2387 Self::open_project_transaction(editor, workspace, project_transaction, title, cx).await
2388 }))
2389 }
2390
2391 async fn open_project_transaction(
2392 this: ViewHandle<Editor>,
2393 workspace: ViewHandle<Workspace>,
2394 transaction: ProjectTransaction,
2395 title: String,
2396 mut cx: AsyncAppContext,
2397 ) -> Result<()> {
2398 let replica_id = this.read_with(&cx, |this, cx| this.replica_id(cx));
2399
2400 // If the code action's edits are all contained within this editor, then
2401 // avoid opening a new editor to display them.
2402 let mut entries = transaction.0.iter();
2403 if let Some((buffer, transaction)) = entries.next() {
2404 if entries.next().is_none() {
2405 let excerpt = this.read_with(&cx, |editor, cx| {
2406 editor
2407 .buffer()
2408 .read(cx)
2409 .excerpt_containing(editor.newest_anchor_selection().head(), cx)
2410 });
2411 if let Some((excerpted_buffer, excerpt_range)) = excerpt {
2412 if excerpted_buffer == *buffer {
2413 let snapshot = buffer.read_with(&cx, |buffer, _| buffer.snapshot());
2414 let excerpt_range = excerpt_range.to_offset(&snapshot);
2415 if snapshot
2416 .edited_ranges_for_transaction(transaction)
2417 .all(|range| {
2418 excerpt_range.start <= range.start && excerpt_range.end >= range.end
2419 })
2420 {
2421 return Ok(());
2422 }
2423 }
2424 }
2425 }
2426 }
2427
2428 let mut ranges_to_highlight = Vec::new();
2429 let excerpt_buffer = cx.add_model(|cx| {
2430 let mut multibuffer = MultiBuffer::new(replica_id).with_title(title);
2431 for (buffer, transaction) in &transaction.0 {
2432 let snapshot = buffer.read(cx).snapshot();
2433 ranges_to_highlight.extend(
2434 multibuffer.push_excerpts_with_context_lines(
2435 buffer.clone(),
2436 snapshot
2437 .edited_ranges_for_transaction::<usize>(transaction)
2438 .collect(),
2439 1,
2440 cx,
2441 ),
2442 );
2443 }
2444 multibuffer.push_transaction(&transaction.0);
2445 multibuffer
2446 });
2447
2448 workspace.update(&mut cx, |workspace, cx| {
2449 let project = workspace.project().clone();
2450 let editor =
2451 cx.add_view(|cx| Editor::for_multibuffer(excerpt_buffer, Some(project), cx));
2452 workspace.add_item(Box::new(editor.clone()), cx);
2453 editor.update(cx, |editor, cx| {
2454 let color = editor.style(cx).highlighted_line_background;
2455 editor.highlight_background::<Self>(ranges_to_highlight, color, cx);
2456 });
2457 });
2458
2459 Ok(())
2460 }
2461
2462 fn refresh_code_actions(&mut self, cx: &mut ViewContext<Self>) -> Option<()> {
2463 let project = self.project.as_ref()?;
2464 let buffer = self.buffer.read(cx);
2465 let newest_selection = self.newest_anchor_selection().clone();
2466 let (start_buffer, start) = buffer.text_anchor_for_position(newest_selection.start, cx)?;
2467 let (end_buffer, end) = buffer.text_anchor_for_position(newest_selection.end, cx)?;
2468 if start_buffer != end_buffer {
2469 return None;
2470 }
2471
2472 let actions = project.update(cx, |project, cx| {
2473 project.code_actions(&start_buffer, start..end, cx)
2474 });
2475 self.code_actions_task = Some(cx.spawn_weak(|this, mut cx| async move {
2476 let actions = actions.await;
2477 if let Some(this) = this.upgrade(&cx) {
2478 this.update(&mut cx, |this, cx| {
2479 this.available_code_actions = actions.log_err().and_then(|actions| {
2480 if actions.is_empty() {
2481 None
2482 } else {
2483 Some((start_buffer, actions.into()))
2484 }
2485 });
2486 cx.notify();
2487 })
2488 }
2489 }));
2490 None
2491 }
2492
2493 fn refresh_document_highlights(&mut self, cx: &mut ViewContext<Self>) -> Option<()> {
2494 if self.pending_rename.is_some() {
2495 return None;
2496 }
2497
2498 let project = self.project.as_ref()?;
2499 let buffer = self.buffer.read(cx);
2500 let newest_selection = self.newest_anchor_selection().clone();
2501 let cursor_position = newest_selection.head();
2502 let (cursor_buffer, cursor_buffer_position) =
2503 buffer.text_anchor_for_position(cursor_position.clone(), cx)?;
2504 let (tail_buffer, _) = buffer.text_anchor_for_position(newest_selection.tail(), cx)?;
2505 if cursor_buffer != tail_buffer {
2506 return None;
2507 }
2508
2509 let highlights = project.update(cx, |project, cx| {
2510 project.document_highlights(&cursor_buffer, cursor_buffer_position, cx)
2511 });
2512
2513 self.document_highlights_task = Some(cx.spawn_weak(|this, mut cx| async move {
2514 let highlights = highlights.log_err().await;
2515 if let Some((this, highlights)) = this.upgrade(&cx).zip(highlights) {
2516 this.update(&mut cx, |this, cx| {
2517 if this.pending_rename.is_some() {
2518 return;
2519 }
2520
2521 let buffer_id = cursor_position.buffer_id;
2522 let excerpt_id = cursor_position.excerpt_id.clone();
2523 let style = this.style(cx);
2524 let read_background = style.document_highlight_read_background;
2525 let write_background = style.document_highlight_write_background;
2526 let buffer = this.buffer.read(cx);
2527 if !buffer
2528 .text_anchor_for_position(cursor_position, cx)
2529 .map_or(false, |(buffer, _)| buffer == cursor_buffer)
2530 {
2531 return;
2532 }
2533
2534 let mut write_ranges = Vec::new();
2535 let mut read_ranges = Vec::new();
2536 for highlight in highlights {
2537 let range = Anchor {
2538 buffer_id,
2539 excerpt_id: excerpt_id.clone(),
2540 text_anchor: highlight.range.start,
2541 }..Anchor {
2542 buffer_id,
2543 excerpt_id: excerpt_id.clone(),
2544 text_anchor: highlight.range.end,
2545 };
2546 if highlight.kind == lsp::DocumentHighlightKind::WRITE {
2547 write_ranges.push(range);
2548 } else {
2549 read_ranges.push(range);
2550 }
2551 }
2552
2553 this.highlight_background::<DocumentHighlightRead>(
2554 read_ranges,
2555 read_background,
2556 cx,
2557 );
2558 this.highlight_background::<DocumentHighlightWrite>(
2559 write_ranges,
2560 write_background,
2561 cx,
2562 );
2563 cx.notify();
2564 });
2565 }
2566 }));
2567 None
2568 }
2569
2570 pub fn render_code_actions_indicator(
2571 &self,
2572 style: &EditorStyle,
2573 cx: &mut ViewContext<Self>,
2574 ) -> Option<ElementBox> {
2575 if self.available_code_actions.is_some() {
2576 enum Tag {}
2577 Some(
2578 MouseEventHandler::new::<Tag, _, _>(0, cx, |_, _| {
2579 Svg::new("icons/zap.svg")
2580 .with_color(style.code_actions_indicator)
2581 .boxed()
2582 })
2583 .with_cursor_style(CursorStyle::PointingHand)
2584 .with_padding(Padding::uniform(3.))
2585 .on_mouse_down(|cx| {
2586 cx.dispatch_action(ToggleCodeActions(true));
2587 })
2588 .boxed(),
2589 )
2590 } else {
2591 None
2592 }
2593 }
2594
2595 pub fn context_menu_visible(&self) -> bool {
2596 self.context_menu
2597 .as_ref()
2598 .map_or(false, |menu| menu.visible())
2599 }
2600
2601 pub fn render_context_menu(
2602 &self,
2603 cursor_position: DisplayPoint,
2604 style: EditorStyle,
2605 cx: &AppContext,
2606 ) -> Option<(DisplayPoint, ElementBox)> {
2607 self.context_menu
2608 .as_ref()
2609 .map(|menu| menu.render(cursor_position, style, cx))
2610 }
2611
2612 fn show_context_menu(&mut self, menu: ContextMenu, cx: &mut ViewContext<Self>) {
2613 if !matches!(menu, ContextMenu::Completions(_)) {
2614 self.completion_tasks.clear();
2615 }
2616 self.context_menu = Some(menu);
2617 cx.notify();
2618 }
2619
2620 fn hide_context_menu(&mut self, cx: &mut ViewContext<Self>) -> Option<ContextMenu> {
2621 cx.notify();
2622 self.completion_tasks.clear();
2623 self.context_menu.take()
2624 }
2625
2626 pub fn insert_snippet(
2627 &mut self,
2628 insertion_ranges: &[Range<usize>],
2629 snippet: Snippet,
2630 cx: &mut ViewContext<Self>,
2631 ) -> Result<()> {
2632 let tabstops = self.buffer.update(cx, |buffer, cx| {
2633 buffer.edit_with_autoindent(insertion_ranges.iter().cloned(), &snippet.text, cx);
2634
2635 let snapshot = &*buffer.read(cx);
2636 let snippet = &snippet;
2637 snippet
2638 .tabstops
2639 .iter()
2640 .map(|tabstop| {
2641 let mut tabstop_ranges = tabstop
2642 .iter()
2643 .flat_map(|tabstop_range| {
2644 let mut delta = 0 as isize;
2645 insertion_ranges.iter().map(move |insertion_range| {
2646 let insertion_start = insertion_range.start as isize + delta;
2647 delta +=
2648 snippet.text.len() as isize - insertion_range.len() as isize;
2649
2650 let start = snapshot.anchor_before(
2651 (insertion_start + tabstop_range.start) as usize,
2652 );
2653 let end = snapshot
2654 .anchor_after((insertion_start + tabstop_range.end) as usize);
2655 start..end
2656 })
2657 })
2658 .collect::<Vec<_>>();
2659 tabstop_ranges
2660 .sort_unstable_by(|a, b| a.start.cmp(&b.start, snapshot).unwrap());
2661 tabstop_ranges
2662 })
2663 .collect::<Vec<_>>()
2664 });
2665
2666 if let Some(tabstop) = tabstops.first() {
2667 self.select_ranges(tabstop.iter().cloned(), Some(Autoscroll::Fit), cx);
2668 self.snippet_stack.push(SnippetState {
2669 active_index: 0,
2670 ranges: tabstops,
2671 });
2672 }
2673
2674 Ok(())
2675 }
2676
2677 pub fn move_to_next_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) -> bool {
2678 self.move_to_snippet_tabstop(Bias::Right, cx)
2679 }
2680
2681 pub fn move_to_prev_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) {
2682 self.move_to_snippet_tabstop(Bias::Left, cx);
2683 }
2684
2685 pub fn move_to_snippet_tabstop(&mut self, bias: Bias, cx: &mut ViewContext<Self>) -> bool {
2686 let buffer = self.buffer.read(cx).snapshot(cx);
2687
2688 if let Some(snippet) = self.snippet_stack.last_mut() {
2689 match bias {
2690 Bias::Left => {
2691 if snippet.active_index > 0 {
2692 snippet.active_index -= 1;
2693 } else {
2694 return false;
2695 }
2696 }
2697 Bias::Right => {
2698 if snippet.active_index + 1 < snippet.ranges.len() {
2699 snippet.active_index += 1;
2700 } else {
2701 return false;
2702 }
2703 }
2704 }
2705 if let Some(current_ranges) = snippet.ranges.get(snippet.active_index) {
2706 let new_selections = current_ranges
2707 .iter()
2708 .map(|new_range| {
2709 let new_range = new_range.to_offset(&buffer);
2710 Selection {
2711 id: post_inc(&mut self.next_selection_id),
2712 start: new_range.start,
2713 end: new_range.end,
2714 reversed: false,
2715 goal: SelectionGoal::None,
2716 }
2717 })
2718 .collect();
2719
2720 // Remove the snippet state when moving to the last tabstop.
2721 if snippet.active_index + 1 == snippet.ranges.len() {
2722 self.snippet_stack.pop();
2723 }
2724
2725 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2726 return true;
2727 }
2728 self.snippet_stack.pop();
2729 }
2730
2731 false
2732 }
2733
2734 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
2735 self.transact(cx, |this, cx| {
2736 this.select_all(&SelectAll, cx);
2737 this.insert("", cx);
2738 });
2739 }
2740
2741 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
2742 let mut selections = self.local_selections::<Point>(cx);
2743 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2744 for selection in &mut selections {
2745 if selection.is_empty() {
2746 let old_head = selection.head();
2747 let mut new_head =
2748 movement::left(&display_map, old_head.to_display_point(&display_map))
2749 .to_point(&display_map);
2750 if let Some((buffer, line_buffer_range)) = display_map
2751 .buffer_snapshot
2752 .buffer_line_for_row(old_head.row)
2753 {
2754 let indent_column = buffer.indent_column_for_line(line_buffer_range.start.row);
2755 if old_head.column <= indent_column && old_head.column > 0 {
2756 let indent = buffer.indent_size();
2757 new_head = cmp::min(
2758 new_head,
2759 Point::new(old_head.row, ((old_head.column - 1) / indent) * indent),
2760 );
2761 }
2762 }
2763
2764 selection.set_head(new_head, SelectionGoal::None);
2765 }
2766 }
2767
2768 self.transact(cx, |this, cx| {
2769 this.update_selections(selections, Some(Autoscroll::Fit), cx);
2770 this.insert("", cx);
2771 });
2772 }
2773
2774 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
2775 self.transact(cx, |this, cx| {
2776 this.move_selections(cx, |map, selection| {
2777 if selection.is_empty() {
2778 let cursor = movement::right(map, selection.head());
2779 selection.set_head(cursor, SelectionGoal::None);
2780 }
2781 });
2782 this.insert(&"", cx);
2783 });
2784 }
2785
2786 pub fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
2787 if self.move_to_next_snippet_tabstop(cx) {
2788 return;
2789 }
2790
2791 let tab_size = cx.global::<Settings>().tab_size;
2792 let mut selections = self.local_selections::<Point>(cx);
2793 self.transact(cx, |this, cx| {
2794 let mut last_indent = None;
2795 this.buffer.update(cx, |buffer, cx| {
2796 for selection in &mut selections {
2797 if selection.is_empty() {
2798 let char_column = buffer
2799 .read(cx)
2800 .text_for_range(Point::new(selection.start.row, 0)..selection.start)
2801 .flat_map(str::chars)
2802 .count();
2803 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
2804 buffer.edit(
2805 [selection.start..selection.start],
2806 " ".repeat(chars_to_next_tab_stop),
2807 cx,
2808 );
2809 selection.start.column += chars_to_next_tab_stop as u32;
2810 selection.end = selection.start;
2811 } else {
2812 let mut start_row = selection.start.row;
2813 let mut end_row = selection.end.row + 1;
2814
2815 // If a selection ends at the beginning of a line, don't indent
2816 // that last line.
2817 if selection.end.column == 0 {
2818 end_row -= 1;
2819 }
2820
2821 // Avoid re-indenting a row that has already been indented by a
2822 // previous selection, but still update this selection's column
2823 // to reflect that indentation.
2824 if let Some((last_indent_row, last_indent_len)) = last_indent {
2825 if last_indent_row == selection.start.row {
2826 selection.start.column += last_indent_len;
2827 start_row += 1;
2828 }
2829 if last_indent_row == selection.end.row {
2830 selection.end.column += last_indent_len;
2831 }
2832 }
2833
2834 for row in start_row..end_row {
2835 let indent_column =
2836 buffer.read(cx).indent_column_for_line(row) as usize;
2837 let columns_to_next_tab_stop = tab_size - (indent_column % tab_size);
2838 let row_start = Point::new(row, 0);
2839 buffer.edit(
2840 [row_start..row_start],
2841 " ".repeat(columns_to_next_tab_stop),
2842 cx,
2843 );
2844
2845 // Update this selection's endpoints to reflect the indentation.
2846 if row == selection.start.row {
2847 selection.start.column += columns_to_next_tab_stop as u32;
2848 }
2849 if row == selection.end.row {
2850 selection.end.column += columns_to_next_tab_stop as u32;
2851 }
2852
2853 last_indent = Some((row, columns_to_next_tab_stop as u32));
2854 }
2855 }
2856 }
2857 });
2858
2859 this.update_selections(selections, Some(Autoscroll::Fit), cx);
2860 });
2861 }
2862
2863 pub fn outdent(&mut self, _: &Outdent, cx: &mut ViewContext<Self>) {
2864 if !self.snippet_stack.is_empty() {
2865 self.move_to_prev_snippet_tabstop(cx);
2866 return;
2867 }
2868
2869 let tab_size = cx.global::<Settings>().tab_size;
2870 let selections = self.local_selections::<Point>(cx);
2871 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2872 let mut deletion_ranges = Vec::new();
2873 let mut last_outdent = None;
2874 {
2875 let buffer = self.buffer.read(cx).read(cx);
2876 for selection in &selections {
2877 let mut rows = selection.spanned_rows(false, &display_map);
2878
2879 // Avoid re-outdenting a row that has already been outdented by a
2880 // previous selection.
2881 if let Some(last_row) = last_outdent {
2882 if last_row == rows.start {
2883 rows.start += 1;
2884 }
2885 }
2886
2887 for row in rows {
2888 let column = buffer.indent_column_for_line(row) as usize;
2889 if column > 0 {
2890 let mut deletion_len = (column % tab_size) as u32;
2891 if deletion_len == 0 {
2892 deletion_len = tab_size as u32;
2893 }
2894 deletion_ranges.push(Point::new(row, 0)..Point::new(row, deletion_len));
2895 last_outdent = Some(row);
2896 }
2897 }
2898 }
2899 }
2900
2901 self.transact(cx, |this, cx| {
2902 this.buffer.update(cx, |buffer, cx| {
2903 buffer.edit(deletion_ranges, "", cx);
2904 });
2905 this.update_selections(
2906 this.local_selections::<usize>(cx),
2907 Some(Autoscroll::Fit),
2908 cx,
2909 );
2910 });
2911 }
2912
2913 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
2914 let selections = self.local_selections::<Point>(cx);
2915 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2916 let buffer = self.buffer.read(cx).snapshot(cx);
2917
2918 let mut new_cursors = Vec::new();
2919 let mut edit_ranges = Vec::new();
2920 let mut selections = selections.iter().peekable();
2921 while let Some(selection) = selections.next() {
2922 let mut rows = selection.spanned_rows(false, &display_map);
2923 let goal_display_column = selection.head().to_display_point(&display_map).column();
2924
2925 // Accumulate contiguous regions of rows that we want to delete.
2926 while let Some(next_selection) = selections.peek() {
2927 let next_rows = next_selection.spanned_rows(false, &display_map);
2928 if next_rows.start <= rows.end {
2929 rows.end = next_rows.end;
2930 selections.next().unwrap();
2931 } else {
2932 break;
2933 }
2934 }
2935
2936 let mut edit_start = Point::new(rows.start, 0).to_offset(&buffer);
2937 let edit_end;
2938 let cursor_buffer_row;
2939 if buffer.max_point().row >= rows.end {
2940 // If there's a line after the range, delete the \n from the end of the row range
2941 // and position the cursor on the next line.
2942 edit_end = Point::new(rows.end, 0).to_offset(&buffer);
2943 cursor_buffer_row = rows.end;
2944 } else {
2945 // If there isn't a line after the range, delete the \n from the line before the
2946 // start of the row range and position the cursor there.
2947 edit_start = edit_start.saturating_sub(1);
2948 edit_end = buffer.len();
2949 cursor_buffer_row = rows.start.saturating_sub(1);
2950 }
2951
2952 let mut cursor = Point::new(cursor_buffer_row, 0).to_display_point(&display_map);
2953 *cursor.column_mut() =
2954 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
2955
2956 new_cursors.push((
2957 selection.id,
2958 buffer.anchor_after(cursor.to_point(&display_map)),
2959 ));
2960 edit_ranges.push(edit_start..edit_end);
2961 }
2962
2963 self.transact(cx, |this, cx| {
2964 let buffer = this.buffer.update(cx, |buffer, cx| {
2965 buffer.edit(edit_ranges, "", cx);
2966 buffer.snapshot(cx)
2967 });
2968 let new_selections = new_cursors
2969 .into_iter()
2970 .map(|(id, cursor)| {
2971 let cursor = cursor.to_point(&buffer);
2972 Selection {
2973 id,
2974 start: cursor,
2975 end: cursor,
2976 reversed: false,
2977 goal: SelectionGoal::None,
2978 }
2979 })
2980 .collect();
2981 this.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2982 });
2983 }
2984
2985 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
2986 let selections = self.local_selections::<Point>(cx);
2987 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2988 let buffer = &display_map.buffer_snapshot;
2989
2990 let mut edits = Vec::new();
2991 let mut selections_iter = selections.iter().peekable();
2992 while let Some(selection) = selections_iter.next() {
2993 // Avoid duplicating the same lines twice.
2994 let mut rows = selection.spanned_rows(false, &display_map);
2995
2996 while let Some(next_selection) = selections_iter.peek() {
2997 let next_rows = next_selection.spanned_rows(false, &display_map);
2998 if next_rows.start <= rows.end - 1 {
2999 rows.end = next_rows.end;
3000 selections_iter.next().unwrap();
3001 } else {
3002 break;
3003 }
3004 }
3005
3006 // Copy the text from the selected row region and splice it at the start of the region.
3007 let start = Point::new(rows.start, 0);
3008 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
3009 let text = buffer
3010 .text_for_range(start..end)
3011 .chain(Some("\n"))
3012 .collect::<String>();
3013 edits.push((start, text, rows.len() as u32));
3014 }
3015
3016 self.transact(cx, |this, cx| {
3017 this.buffer.update(cx, |buffer, cx| {
3018 for (point, text, _) in edits.into_iter().rev() {
3019 buffer.edit(Some(point..point), text, cx);
3020 }
3021 });
3022
3023 this.request_autoscroll(Autoscroll::Fit, cx);
3024 });
3025 }
3026
3027 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
3028 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3029 let buffer = self.buffer.read(cx).snapshot(cx);
3030
3031 let mut edits = Vec::new();
3032 let mut unfold_ranges = Vec::new();
3033 let mut refold_ranges = Vec::new();
3034
3035 let selections = self.local_selections::<Point>(cx);
3036 let mut selections = selections.iter().peekable();
3037 let mut contiguous_row_selections = Vec::new();
3038 let mut new_selections = Vec::new();
3039
3040 while let Some(selection) = selections.next() {
3041 // Find all the selections that span a contiguous row range
3042 contiguous_row_selections.push(selection.clone());
3043 let start_row = selection.start.row;
3044 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
3045 display_map.next_line_boundary(selection.end).0.row + 1
3046 } else {
3047 selection.end.row
3048 };
3049
3050 while let Some(next_selection) = selections.peek() {
3051 if next_selection.start.row <= end_row {
3052 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
3053 display_map.next_line_boundary(next_selection.end).0.row + 1
3054 } else {
3055 next_selection.end.row
3056 };
3057 contiguous_row_selections.push(selections.next().unwrap().clone());
3058 } else {
3059 break;
3060 }
3061 }
3062
3063 // Move the text spanned by the row range to be before the line preceding the row range
3064 if start_row > 0 {
3065 let range_to_move = Point::new(start_row - 1, buffer.line_len(start_row - 1))
3066 ..Point::new(end_row - 1, buffer.line_len(end_row - 1));
3067 let insertion_point = display_map
3068 .prev_line_boundary(Point::new(start_row - 1, 0))
3069 .0;
3070
3071 // Don't move lines across excerpts
3072 if buffer
3073 .excerpt_boundaries_in_range((
3074 Bound::Excluded(insertion_point),
3075 Bound::Included(range_to_move.end),
3076 ))
3077 .next()
3078 .is_none()
3079 {
3080 let text = buffer
3081 .text_for_range(range_to_move.clone())
3082 .flat_map(|s| s.chars())
3083 .skip(1)
3084 .chain(['\n'])
3085 .collect::<String>();
3086
3087 edits.push((
3088 buffer.anchor_after(range_to_move.start)
3089 ..buffer.anchor_before(range_to_move.end),
3090 String::new(),
3091 ));
3092 let insertion_anchor = buffer.anchor_after(insertion_point);
3093 edits.push((insertion_anchor.clone()..insertion_anchor, text));
3094
3095 let row_delta = range_to_move.start.row - insertion_point.row + 1;
3096
3097 // Move selections up
3098 new_selections.extend(contiguous_row_selections.drain(..).map(
3099 |mut selection| {
3100 selection.start.row -= row_delta;
3101 selection.end.row -= row_delta;
3102 selection
3103 },
3104 ));
3105
3106 // Move folds up
3107 unfold_ranges.push(range_to_move.clone());
3108 for fold in display_map.folds_in_range(
3109 buffer.anchor_before(range_to_move.start)
3110 ..buffer.anchor_after(range_to_move.end),
3111 ) {
3112 let mut start = fold.start.to_point(&buffer);
3113 let mut end = fold.end.to_point(&buffer);
3114 start.row -= row_delta;
3115 end.row -= row_delta;
3116 refold_ranges.push(start..end);
3117 }
3118 }
3119 }
3120
3121 // If we didn't move line(s), preserve the existing selections
3122 new_selections.extend(contiguous_row_selections.drain(..));
3123 }
3124
3125 self.transact(cx, |this, cx| {
3126 this.unfold_ranges(unfold_ranges, cx);
3127 this.buffer.update(cx, |buffer, cx| {
3128 for (range, text) in edits {
3129 buffer.edit([range], text, cx);
3130 }
3131 });
3132 this.fold_ranges(refold_ranges, cx);
3133 this.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3134 });
3135 }
3136
3137 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
3138 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3139 let buffer = self.buffer.read(cx).snapshot(cx);
3140
3141 let mut edits = Vec::new();
3142 let mut unfold_ranges = Vec::new();
3143 let mut refold_ranges = Vec::new();
3144
3145 let selections = self.local_selections::<Point>(cx);
3146 let mut selections = selections.iter().peekable();
3147 let mut contiguous_row_selections = Vec::new();
3148 let mut new_selections = Vec::new();
3149
3150 while let Some(selection) = selections.next() {
3151 // Find all the selections that span a contiguous row range
3152 contiguous_row_selections.push(selection.clone());
3153 let start_row = selection.start.row;
3154 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
3155 display_map.next_line_boundary(selection.end).0.row + 1
3156 } else {
3157 selection.end.row
3158 };
3159
3160 while let Some(next_selection) = selections.peek() {
3161 if next_selection.start.row <= end_row {
3162 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
3163 display_map.next_line_boundary(next_selection.end).0.row + 1
3164 } else {
3165 next_selection.end.row
3166 };
3167 contiguous_row_selections.push(selections.next().unwrap().clone());
3168 } else {
3169 break;
3170 }
3171 }
3172
3173 // Move the text spanned by the row range to be after the last line of the row range
3174 if end_row <= buffer.max_point().row {
3175 let range_to_move = Point::new(start_row, 0)..Point::new(end_row, 0);
3176 let insertion_point = display_map.next_line_boundary(Point::new(end_row, 0)).0;
3177
3178 // Don't move lines across excerpt boundaries
3179 if buffer
3180 .excerpt_boundaries_in_range((
3181 Bound::Excluded(range_to_move.start),
3182 Bound::Included(insertion_point),
3183 ))
3184 .next()
3185 .is_none()
3186 {
3187 let mut text = String::from("\n");
3188 text.extend(buffer.text_for_range(range_to_move.clone()));
3189 text.pop(); // Drop trailing newline
3190 edits.push((
3191 buffer.anchor_after(range_to_move.start)
3192 ..buffer.anchor_before(range_to_move.end),
3193 String::new(),
3194 ));
3195 let insertion_anchor = buffer.anchor_after(insertion_point);
3196 edits.push((insertion_anchor.clone()..insertion_anchor, text));
3197
3198 let row_delta = insertion_point.row - range_to_move.end.row + 1;
3199
3200 // Move selections down
3201 new_selections.extend(contiguous_row_selections.drain(..).map(
3202 |mut selection| {
3203 selection.start.row += row_delta;
3204 selection.end.row += row_delta;
3205 selection
3206 },
3207 ));
3208
3209 // Move folds down
3210 unfold_ranges.push(range_to_move.clone());
3211 for fold in display_map.folds_in_range(
3212 buffer.anchor_before(range_to_move.start)
3213 ..buffer.anchor_after(range_to_move.end),
3214 ) {
3215 let mut start = fold.start.to_point(&buffer);
3216 let mut end = fold.end.to_point(&buffer);
3217 start.row += row_delta;
3218 end.row += row_delta;
3219 refold_ranges.push(start..end);
3220 }
3221 }
3222 }
3223
3224 // If we didn't move line(s), preserve the existing selections
3225 new_selections.extend(contiguous_row_selections.drain(..));
3226 }
3227
3228 self.transact(cx, |this, cx| {
3229 this.unfold_ranges(unfold_ranges, cx);
3230 this.buffer.update(cx, |buffer, cx| {
3231 for (range, text) in edits {
3232 buffer.edit([range], text, cx);
3233 }
3234 });
3235 this.fold_ranges(refold_ranges, cx);
3236 this.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3237 });
3238 }
3239
3240 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
3241 let mut text = String::new();
3242 let mut selections = self.local_selections::<Point>(cx);
3243 let mut clipboard_selections = Vec::with_capacity(selections.len());
3244 {
3245 let buffer = self.buffer.read(cx).read(cx);
3246 let max_point = buffer.max_point();
3247 for selection in &mut selections {
3248 let is_entire_line = selection.is_empty();
3249 if is_entire_line {
3250 selection.start = Point::new(selection.start.row, 0);
3251 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
3252 selection.goal = SelectionGoal::None;
3253 }
3254 let mut len = 0;
3255 for chunk in buffer.text_for_range(selection.start..selection.end) {
3256 text.push_str(chunk);
3257 len += chunk.len();
3258 }
3259 clipboard_selections.push(ClipboardSelection {
3260 len,
3261 is_entire_line,
3262 });
3263 }
3264 }
3265
3266 self.transact(cx, |this, cx| {
3267 this.update_selections(selections, Some(Autoscroll::Fit), cx);
3268 this.insert("", cx);
3269 cx.write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
3270 });
3271 }
3272
3273 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
3274 let selections = self.local_selections::<Point>(cx);
3275 let mut text = String::new();
3276 let mut clipboard_selections = Vec::with_capacity(selections.len());
3277 {
3278 let buffer = self.buffer.read(cx).read(cx);
3279 let max_point = buffer.max_point();
3280 for selection in selections.iter() {
3281 let mut start = selection.start;
3282 let mut end = selection.end;
3283 let is_entire_line = selection.is_empty();
3284 if is_entire_line {
3285 start = Point::new(start.row, 0);
3286 end = cmp::min(max_point, Point::new(start.row + 1, 0));
3287 }
3288 let mut len = 0;
3289 for chunk in buffer.text_for_range(start..end) {
3290 text.push_str(chunk);
3291 len += chunk.len();
3292 }
3293 clipboard_selections.push(ClipboardSelection {
3294 len,
3295 is_entire_line,
3296 });
3297 }
3298 }
3299
3300 cx.write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
3301 }
3302
3303 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
3304 self.transact(cx, |this, cx| {
3305 if let Some(item) = cx.as_mut().read_from_clipboard() {
3306 let clipboard_text = item.text();
3307 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
3308 let mut selections = this.local_selections::<usize>(cx);
3309 let all_selections_were_entire_line =
3310 clipboard_selections.iter().all(|s| s.is_entire_line);
3311 if clipboard_selections.len() != selections.len() {
3312 clipboard_selections.clear();
3313 }
3314
3315 let mut delta = 0_isize;
3316 let mut start_offset = 0;
3317 for (i, selection) in selections.iter_mut().enumerate() {
3318 let to_insert;
3319 let entire_line;
3320 if let Some(clipboard_selection) = clipboard_selections.get(i) {
3321 let end_offset = start_offset + clipboard_selection.len;
3322 to_insert = &clipboard_text[start_offset..end_offset];
3323 entire_line = clipboard_selection.is_entire_line;
3324 start_offset = end_offset
3325 } else {
3326 to_insert = clipboard_text.as_str();
3327 entire_line = all_selections_were_entire_line;
3328 }
3329
3330 selection.start = (selection.start as isize + delta) as usize;
3331 selection.end = (selection.end as isize + delta) as usize;
3332
3333 this.buffer.update(cx, |buffer, cx| {
3334 // If the corresponding selection was empty when this slice of the
3335 // clipboard text was written, then the entire line containing the
3336 // selection was copied. If this selection is also currently empty,
3337 // then paste the line before the current line of the buffer.
3338 let range = if selection.is_empty() && entire_line {
3339 let column =
3340 selection.start.to_point(&buffer.read(cx)).column as usize;
3341 let line_start = selection.start - column;
3342 line_start..line_start
3343 } else {
3344 selection.start..selection.end
3345 };
3346
3347 delta += to_insert.len() as isize - range.len() as isize;
3348 buffer.edit([range], to_insert, cx);
3349 selection.start += to_insert.len();
3350 selection.end = selection.start;
3351 });
3352 }
3353 this.update_selections(selections, Some(Autoscroll::Fit), cx);
3354 } else {
3355 this.insert(clipboard_text, cx);
3356 }
3357 }
3358 });
3359 }
3360
3361 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
3362 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
3363 if let Some((selections, _)) = self.selection_history.get(&tx_id).cloned() {
3364 self.set_selections(selections, None, true, cx);
3365 }
3366 self.request_autoscroll(Autoscroll::Fit, cx);
3367 cx.emit(Event::Edited);
3368 }
3369 }
3370
3371 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
3372 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
3373 if let Some((_, Some(selections))) = self.selection_history.get(&tx_id).cloned() {
3374 self.set_selections(selections, None, true, cx);
3375 }
3376 self.request_autoscroll(Autoscroll::Fit, cx);
3377 cx.emit(Event::Edited);
3378 }
3379 }
3380
3381 pub fn finalize_last_transaction(&mut self, cx: &mut ViewContext<Self>) {
3382 self.buffer
3383 .update(cx, |buffer, cx| buffer.finalize_last_transaction(cx));
3384 }
3385
3386 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
3387 self.move_selections(cx, |map, selection| {
3388 let cursor = if selection.is_empty() {
3389 movement::left(map, selection.start)
3390 } else {
3391 selection.start
3392 };
3393 selection.collapse_to(cursor, SelectionGoal::None);
3394 });
3395 }
3396
3397 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
3398 self.move_selection_heads(cx, |map, head, _| {
3399 (movement::left(map, head), SelectionGoal::None)
3400 });
3401 }
3402
3403 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
3404 self.move_selections(cx, |map, selection| {
3405 let cursor = if selection.is_empty() {
3406 movement::right(map, selection.end)
3407 } else {
3408 selection.end
3409 };
3410 selection.collapse_to(cursor, SelectionGoal::None)
3411 });
3412 }
3413
3414 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
3415 self.move_selection_heads(cx, |map, head, _| {
3416 (movement::right(map, head), SelectionGoal::None)
3417 });
3418 }
3419
3420 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
3421 if self.take_rename(true, cx).is_some() {
3422 return;
3423 }
3424
3425 if let Some(context_menu) = self.context_menu.as_mut() {
3426 if context_menu.select_prev(cx) {
3427 return;
3428 }
3429 }
3430
3431 if matches!(self.mode, EditorMode::SingleLine) {
3432 cx.propagate_action();
3433 return;
3434 }
3435
3436 self.move_selections(cx, |map, selection| {
3437 if !selection.is_empty() {
3438 selection.goal = SelectionGoal::None;
3439 }
3440 let (cursor, goal) = movement::up(&map, selection.start, selection.goal);
3441 selection.collapse_to(cursor, goal);
3442 });
3443 }
3444
3445 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
3446 self.move_selection_heads(cx, movement::up)
3447 }
3448
3449 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
3450 self.take_rename(true, cx);
3451
3452 if let Some(context_menu) = self.context_menu.as_mut() {
3453 if context_menu.select_next(cx) {
3454 return;
3455 }
3456 }
3457
3458 if matches!(self.mode, EditorMode::SingleLine) {
3459 cx.propagate_action();
3460 return;
3461 }
3462
3463 self.move_selections(cx, |map, selection| {
3464 if !selection.is_empty() {
3465 selection.goal = SelectionGoal::None;
3466 }
3467 let (cursor, goal) = movement::down(&map, selection.end, selection.goal);
3468 selection.collapse_to(cursor, goal);
3469 });
3470 }
3471
3472 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
3473 self.move_selection_heads(cx, movement::down)
3474 }
3475
3476 pub fn move_to_previous_word_start(
3477 &mut self,
3478 _: &MoveToPreviousWordStart,
3479 cx: &mut ViewContext<Self>,
3480 ) {
3481 self.move_cursors(cx, |map, head, _| {
3482 (
3483 movement::previous_word_start(map, head),
3484 SelectionGoal::None,
3485 )
3486 });
3487 }
3488
3489 pub fn select_to_previous_word_start(
3490 &mut self,
3491 _: &SelectToPreviousWordBoundary,
3492 cx: &mut ViewContext<Self>,
3493 ) {
3494 self.move_selection_heads(cx, |map, head, _| {
3495 (
3496 movement::previous_word_start(map, head),
3497 SelectionGoal::None,
3498 )
3499 });
3500 }
3501
3502 pub fn delete_to_previous_word_start(
3503 &mut self,
3504 _: &DeleteToPreviousWordBoundary,
3505 cx: &mut ViewContext<Self>,
3506 ) {
3507 self.transact(cx, |this, cx| {
3508 this.move_selections(cx, |map, selection| {
3509 if selection.is_empty() {
3510 let cursor = movement::previous_word_start(map, selection.head());
3511 selection.set_head(cursor, SelectionGoal::None);
3512 }
3513 });
3514 this.insert("", cx);
3515 });
3516 }
3517
3518 pub fn move_to_next_word_end(&mut self, _: &MoveToNextWordEnd, cx: &mut ViewContext<Self>) {
3519 self.move_cursors(cx, |map, head, _| {
3520 (movement::next_word_end(map, head), SelectionGoal::None)
3521 });
3522 }
3523
3524 pub fn select_to_next_word_end(
3525 &mut self,
3526 _: &SelectToNextWordBoundary,
3527 cx: &mut ViewContext<Self>,
3528 ) {
3529 self.move_selection_heads(cx, |map, head, _| {
3530 (movement::next_word_end(map, head), SelectionGoal::None)
3531 });
3532 }
3533
3534 pub fn delete_to_next_word_end(
3535 &mut self,
3536 _: &DeleteToNextWordBoundary,
3537 cx: &mut ViewContext<Self>,
3538 ) {
3539 self.transact(cx, |this, cx| {
3540 this.move_selections(cx, |map, selection| {
3541 if selection.is_empty() {
3542 let cursor = movement::next_word_end(map, selection.head());
3543 selection.set_head(cursor, SelectionGoal::None);
3544 }
3545 });
3546 this.insert("", cx);
3547 });
3548 }
3549
3550 pub fn move_to_beginning_of_line(
3551 &mut self,
3552 _: &MoveToBeginningOfLine,
3553 cx: &mut ViewContext<Self>,
3554 ) {
3555 self.move_cursors(cx, |map, head, _| {
3556 (
3557 movement::line_beginning(map, head, true),
3558 SelectionGoal::None,
3559 )
3560 });
3561 }
3562
3563 pub fn select_to_beginning_of_line(
3564 &mut self,
3565 SelectToBeginningOfLine(stop_at_soft_boundaries): &SelectToBeginningOfLine,
3566 cx: &mut ViewContext<Self>,
3567 ) {
3568 self.move_selection_heads(cx, |map, head, _| {
3569 (
3570 movement::line_beginning(map, head, *stop_at_soft_boundaries),
3571 SelectionGoal::None,
3572 )
3573 });
3574 }
3575
3576 pub fn delete_to_beginning_of_line(
3577 &mut self,
3578 _: &DeleteToBeginningOfLine,
3579 cx: &mut ViewContext<Self>,
3580 ) {
3581 self.transact(cx, |this, cx| {
3582 this.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
3583 this.backspace(&Backspace, cx);
3584 });
3585 }
3586
3587 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
3588 self.move_cursors(cx, |map, head, _| {
3589 (movement::line_end(map, head, true), SelectionGoal::None)
3590 });
3591 }
3592
3593 pub fn select_to_end_of_line(
3594 &mut self,
3595 SelectToEndOfLine(stop_at_soft_boundaries): &SelectToEndOfLine,
3596 cx: &mut ViewContext<Self>,
3597 ) {
3598 self.move_selection_heads(cx, |map, head, _| {
3599 (
3600 movement::line_end(map, head, *stop_at_soft_boundaries),
3601 SelectionGoal::None,
3602 )
3603 });
3604 }
3605
3606 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
3607 self.transact(cx, |this, cx| {
3608 this.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3609 this.delete(&Delete, cx);
3610 });
3611 }
3612
3613 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
3614 self.transact(cx, |this, cx| {
3615 this.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3616 this.cut(&Cut, cx);
3617 });
3618 }
3619
3620 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
3621 if matches!(self.mode, EditorMode::SingleLine) {
3622 cx.propagate_action();
3623 return;
3624 }
3625
3626 let selection = Selection {
3627 id: post_inc(&mut self.next_selection_id),
3628 start: 0,
3629 end: 0,
3630 reversed: false,
3631 goal: SelectionGoal::None,
3632 };
3633 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3634 }
3635
3636 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
3637 let mut selection = self.local_selections::<Point>(cx).last().unwrap().clone();
3638 selection.set_head(Point::zero(), SelectionGoal::None);
3639 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3640 }
3641
3642 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
3643 if matches!(self.mode, EditorMode::SingleLine) {
3644 cx.propagate_action();
3645 return;
3646 }
3647
3648 let cursor = self.buffer.read(cx).read(cx).len();
3649 let selection = Selection {
3650 id: post_inc(&mut self.next_selection_id),
3651 start: cursor,
3652 end: cursor,
3653 reversed: false,
3654 goal: SelectionGoal::None,
3655 };
3656 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3657 }
3658
3659 pub fn set_nav_history(&mut self, nav_history: Option<ItemNavHistory>) {
3660 self.nav_history = nav_history;
3661 }
3662
3663 pub fn nav_history(&self) -> Option<&ItemNavHistory> {
3664 self.nav_history.as_ref()
3665 }
3666
3667 fn push_to_nav_history(
3668 &self,
3669 position: Anchor,
3670 new_position: Option<Point>,
3671 cx: &mut ViewContext<Self>,
3672 ) {
3673 if let Some(nav_history) = &self.nav_history {
3674 let buffer = self.buffer.read(cx).read(cx);
3675 let offset = position.to_offset(&buffer);
3676 let point = position.to_point(&buffer);
3677 drop(buffer);
3678
3679 if let Some(new_position) = new_position {
3680 let row_delta = (new_position.row as i64 - point.row as i64).abs();
3681 if row_delta < MIN_NAVIGATION_HISTORY_ROW_DELTA {
3682 return;
3683 }
3684 }
3685
3686 nav_history.push(Some(NavigationData {
3687 anchor: position,
3688 offset,
3689 }));
3690 }
3691 }
3692
3693 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
3694 let mut selection = self.local_selections::<usize>(cx).first().unwrap().clone();
3695 selection.set_head(self.buffer.read(cx).read(cx).len(), SelectionGoal::None);
3696 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3697 }
3698
3699 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
3700 let selection = Selection {
3701 id: post_inc(&mut self.next_selection_id),
3702 start: 0,
3703 end: self.buffer.read(cx).read(cx).len(),
3704 reversed: false,
3705 goal: SelectionGoal::None,
3706 };
3707 self.update_selections(vec![selection], None, cx);
3708 }
3709
3710 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
3711 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3712 let mut selections = self.local_selections::<Point>(cx);
3713 let max_point = display_map.buffer_snapshot.max_point();
3714 for selection in &mut selections {
3715 let rows = selection.spanned_rows(true, &display_map);
3716 selection.start = Point::new(rows.start, 0);
3717 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
3718 selection.reversed = false;
3719 }
3720 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3721 }
3722
3723 pub fn split_selection_into_lines(
3724 &mut self,
3725 _: &SplitSelectionIntoLines,
3726 cx: &mut ViewContext<Self>,
3727 ) {
3728 let mut to_unfold = Vec::new();
3729 let mut new_selections = Vec::new();
3730 {
3731 let selections = self.local_selections::<Point>(cx);
3732 let buffer = self.buffer.read(cx).read(cx);
3733 for selection in selections {
3734 for row in selection.start.row..selection.end.row {
3735 let cursor = Point::new(row, buffer.line_len(row));
3736 new_selections.push(Selection {
3737 id: post_inc(&mut self.next_selection_id),
3738 start: cursor,
3739 end: cursor,
3740 reversed: false,
3741 goal: SelectionGoal::None,
3742 });
3743 }
3744 new_selections.push(Selection {
3745 id: selection.id,
3746 start: selection.end,
3747 end: selection.end,
3748 reversed: false,
3749 goal: SelectionGoal::None,
3750 });
3751 to_unfold.push(selection.start..selection.end);
3752 }
3753 }
3754 self.unfold_ranges(to_unfold, cx);
3755 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3756 }
3757
3758 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
3759 self.add_selection(true, cx);
3760 }
3761
3762 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
3763 self.add_selection(false, cx);
3764 }
3765
3766 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
3767 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3768 let mut selections = self.local_selections::<Point>(cx);
3769 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
3770 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
3771 let range = oldest_selection.display_range(&display_map).sorted();
3772 let columns = cmp::min(range.start.column(), range.end.column())
3773 ..cmp::max(range.start.column(), range.end.column());
3774
3775 selections.clear();
3776 let mut stack = Vec::new();
3777 for row in range.start.row()..=range.end.row() {
3778 if let Some(selection) = self.build_columnar_selection(
3779 &display_map,
3780 row,
3781 &columns,
3782 oldest_selection.reversed,
3783 ) {
3784 stack.push(selection.id);
3785 selections.push(selection);
3786 }
3787 }
3788
3789 if above {
3790 stack.reverse();
3791 }
3792
3793 AddSelectionsState { above, stack }
3794 });
3795
3796 let last_added_selection = *state.stack.last().unwrap();
3797 let mut new_selections = Vec::new();
3798 if above == state.above {
3799 let end_row = if above {
3800 0
3801 } else {
3802 display_map.max_point().row()
3803 };
3804
3805 'outer: for selection in selections {
3806 if selection.id == last_added_selection {
3807 let range = selection.display_range(&display_map).sorted();
3808 debug_assert_eq!(range.start.row(), range.end.row());
3809 let mut row = range.start.row();
3810 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
3811 {
3812 start..end
3813 } else {
3814 cmp::min(range.start.column(), range.end.column())
3815 ..cmp::max(range.start.column(), range.end.column())
3816 };
3817
3818 while row != end_row {
3819 if above {
3820 row -= 1;
3821 } else {
3822 row += 1;
3823 }
3824
3825 if let Some(new_selection) = self.build_columnar_selection(
3826 &display_map,
3827 row,
3828 &columns,
3829 selection.reversed,
3830 ) {
3831 state.stack.push(new_selection.id);
3832 if above {
3833 new_selections.push(new_selection);
3834 new_selections.push(selection);
3835 } else {
3836 new_selections.push(selection);
3837 new_selections.push(new_selection);
3838 }
3839
3840 continue 'outer;
3841 }
3842 }
3843 }
3844
3845 new_selections.push(selection);
3846 }
3847 } else {
3848 new_selections = selections;
3849 new_selections.retain(|s| s.id != last_added_selection);
3850 state.stack.pop();
3851 }
3852
3853 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3854 if state.stack.len() > 1 {
3855 self.add_selections_state = Some(state);
3856 }
3857 }
3858
3859 pub fn select_next(&mut self, action: &SelectNext, cx: &mut ViewContext<Self>) {
3860 let replace_newest = action.0;
3861 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3862 let buffer = &display_map.buffer_snapshot;
3863 let mut selections = self.local_selections::<usize>(cx);
3864 if let Some(mut select_next_state) = self.select_next_state.take() {
3865 let query = &select_next_state.query;
3866 if !select_next_state.done {
3867 let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
3868 let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
3869 let mut next_selected_range = None;
3870
3871 let bytes_after_last_selection =
3872 buffer.bytes_in_range(last_selection.end..buffer.len());
3873 let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
3874 let query_matches = query
3875 .stream_find_iter(bytes_after_last_selection)
3876 .map(|result| (last_selection.end, result))
3877 .chain(
3878 query
3879 .stream_find_iter(bytes_before_first_selection)
3880 .map(|result| (0, result)),
3881 );
3882 for (start_offset, query_match) in query_matches {
3883 let query_match = query_match.unwrap(); // can only fail due to I/O
3884 let offset_range =
3885 start_offset + query_match.start()..start_offset + query_match.end();
3886 let display_range = offset_range.start.to_display_point(&display_map)
3887 ..offset_range.end.to_display_point(&display_map);
3888
3889 if !select_next_state.wordwise
3890 || (!movement::is_inside_word(&display_map, display_range.start)
3891 && !movement::is_inside_word(&display_map, display_range.end))
3892 {
3893 next_selected_range = Some(offset_range);
3894 break;
3895 }
3896 }
3897
3898 if let Some(next_selected_range) = next_selected_range {
3899 if replace_newest {
3900 if let Some(newest_id) =
3901 selections.iter().max_by_key(|s| s.id).map(|s| s.id)
3902 {
3903 selections.retain(|s| s.id != newest_id);
3904 }
3905 }
3906 selections.push(Selection {
3907 id: post_inc(&mut self.next_selection_id),
3908 start: next_selected_range.start,
3909 end: next_selected_range.end,
3910 reversed: false,
3911 goal: SelectionGoal::None,
3912 });
3913 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3914 } else {
3915 select_next_state.done = true;
3916 }
3917 }
3918
3919 self.select_next_state = Some(select_next_state);
3920 } else if selections.len() == 1 {
3921 let selection = selections.last_mut().unwrap();
3922 if selection.start == selection.end {
3923 let word_range = movement::surrounding_word(
3924 &display_map,
3925 selection.start.to_display_point(&display_map),
3926 );
3927 selection.start = word_range.start.to_offset(&display_map, Bias::Left);
3928 selection.end = word_range.end.to_offset(&display_map, Bias::Left);
3929 selection.goal = SelectionGoal::None;
3930 selection.reversed = false;
3931
3932 let query = buffer
3933 .text_for_range(selection.start..selection.end)
3934 .collect::<String>();
3935 let select_state = SelectNextState {
3936 query: AhoCorasick::new_auto_configured(&[query]),
3937 wordwise: true,
3938 done: false,
3939 };
3940 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3941 self.select_next_state = Some(select_state);
3942 } else {
3943 let query = buffer
3944 .text_for_range(selection.start..selection.end)
3945 .collect::<String>();
3946 self.select_next_state = Some(SelectNextState {
3947 query: AhoCorasick::new_auto_configured(&[query]),
3948 wordwise: false,
3949 done: false,
3950 });
3951 self.select_next(action, cx);
3952 }
3953 }
3954 }
3955
3956 pub fn toggle_comments(&mut self, _: &ToggleComments, cx: &mut ViewContext<Self>) {
3957 // Get the line comment prefix. Split its trailing whitespace into a separate string,
3958 // as that portion won't be used for detecting if a line is a comment.
3959 let full_comment_prefix =
3960 if let Some(prefix) = self.language(cx).and_then(|l| l.line_comment_prefix()) {
3961 prefix.to_string()
3962 } else {
3963 return;
3964 };
3965 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
3966 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
3967
3968 self.transact(cx, |this, cx| {
3969 let mut selections = this.local_selections::<Point>(cx);
3970 let mut all_selection_lines_are_comments = true;
3971 let mut edit_ranges = Vec::new();
3972 let mut last_toggled_row = None;
3973 this.buffer.update(cx, |buffer, cx| {
3974 for selection in &mut selections {
3975 edit_ranges.clear();
3976 let snapshot = buffer.snapshot(cx);
3977
3978 let end_row =
3979 if selection.end.row > selection.start.row && selection.end.column == 0 {
3980 selection.end.row
3981 } else {
3982 selection.end.row + 1
3983 };
3984
3985 for row in selection.start.row..end_row {
3986 // If multiple selections contain a given row, avoid processing that
3987 // row more than once.
3988 if last_toggled_row == Some(row) {
3989 continue;
3990 } else {
3991 last_toggled_row = Some(row);
3992 }
3993
3994 if snapshot.is_line_blank(row) {
3995 continue;
3996 }
3997
3998 let start = Point::new(row, snapshot.indent_column_for_line(row));
3999 let mut line_bytes = snapshot
4000 .bytes_in_range(start..snapshot.max_point())
4001 .flatten()
4002 .copied();
4003
4004 // If this line currently begins with the line comment prefix, then record
4005 // the range containing the prefix.
4006 if all_selection_lines_are_comments
4007 && line_bytes
4008 .by_ref()
4009 .take(comment_prefix.len())
4010 .eq(comment_prefix.bytes())
4011 {
4012 // Include any whitespace that matches the comment prefix.
4013 let matching_whitespace_len = line_bytes
4014 .zip(comment_prefix_whitespace.bytes())
4015 .take_while(|(a, b)| a == b)
4016 .count()
4017 as u32;
4018 let end = Point::new(
4019 row,
4020 start.column
4021 + comment_prefix.len() as u32
4022 + matching_whitespace_len,
4023 );
4024 edit_ranges.push(start..end);
4025 }
4026 // If this line does not begin with the line comment prefix, then record
4027 // the position where the prefix should be inserted.
4028 else {
4029 all_selection_lines_are_comments = false;
4030 edit_ranges.push(start..start);
4031 }
4032 }
4033
4034 if !edit_ranges.is_empty() {
4035 if all_selection_lines_are_comments {
4036 buffer.edit(edit_ranges.iter().cloned(), "", cx);
4037 } else {
4038 let min_column =
4039 edit_ranges.iter().map(|r| r.start.column).min().unwrap();
4040 let edit_ranges = edit_ranges.iter().map(|range| {
4041 let position = Point::new(range.start.row, min_column);
4042 position..position
4043 });
4044 buffer.edit(edit_ranges, &full_comment_prefix, cx);
4045 }
4046 }
4047 }
4048 });
4049
4050 this.update_selections(
4051 this.local_selections::<usize>(cx),
4052 Some(Autoscroll::Fit),
4053 cx,
4054 );
4055 });
4056 }
4057
4058 pub fn select_larger_syntax_node(
4059 &mut self,
4060 _: &SelectLargerSyntaxNode,
4061 cx: &mut ViewContext<Self>,
4062 ) {
4063 let old_selections = self.local_selections::<usize>(cx).into_boxed_slice();
4064 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4065 let buffer = self.buffer.read(cx).snapshot(cx);
4066
4067 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
4068 let mut selected_larger_node = false;
4069 let new_selections = old_selections
4070 .iter()
4071 .map(|selection| {
4072 let old_range = selection.start..selection.end;
4073 let mut new_range = old_range.clone();
4074 while let Some(containing_range) =
4075 buffer.range_for_syntax_ancestor(new_range.clone())
4076 {
4077 new_range = containing_range;
4078 if !display_map.intersects_fold(new_range.start)
4079 && !display_map.intersects_fold(new_range.end)
4080 {
4081 break;
4082 }
4083 }
4084
4085 selected_larger_node |= new_range != old_range;
4086 Selection {
4087 id: selection.id,
4088 start: new_range.start,
4089 end: new_range.end,
4090 goal: SelectionGoal::None,
4091 reversed: selection.reversed,
4092 }
4093 })
4094 .collect::<Vec<_>>();
4095
4096 if selected_larger_node {
4097 stack.push(old_selections);
4098 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
4099 }
4100 self.select_larger_syntax_node_stack = stack;
4101 }
4102
4103 pub fn select_smaller_syntax_node(
4104 &mut self,
4105 _: &SelectSmallerSyntaxNode,
4106 cx: &mut ViewContext<Self>,
4107 ) {
4108 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
4109 if let Some(selections) = stack.pop() {
4110 self.update_selections(selections.to_vec(), Some(Autoscroll::Fit), cx);
4111 }
4112 self.select_larger_syntax_node_stack = stack;
4113 }
4114
4115 pub fn move_to_enclosing_bracket(
4116 &mut self,
4117 _: &MoveToEnclosingBracket,
4118 cx: &mut ViewContext<Self>,
4119 ) {
4120 let mut selections = self.local_selections::<usize>(cx);
4121 let buffer = self.buffer.read(cx).snapshot(cx);
4122 for selection in &mut selections {
4123 if let Some((open_range, close_range)) =
4124 buffer.enclosing_bracket_ranges(selection.start..selection.end)
4125 {
4126 let close_range = close_range.to_inclusive();
4127 let destination = if close_range.contains(&selection.start)
4128 && close_range.contains(&selection.end)
4129 {
4130 open_range.end
4131 } else {
4132 *close_range.start()
4133 };
4134 selection.start = destination;
4135 selection.end = destination;
4136 }
4137 }
4138
4139 self.update_selections(selections, Some(Autoscroll::Fit), cx);
4140 }
4141
4142 pub fn go_to_diagnostic(
4143 &mut self,
4144 &GoToDiagnostic(direction): &GoToDiagnostic,
4145 cx: &mut ViewContext<Self>,
4146 ) {
4147 let buffer = self.buffer.read(cx).snapshot(cx);
4148 let selection = self.newest_selection_with_snapshot::<usize>(&buffer);
4149 let mut active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
4150 active_diagnostics
4151 .primary_range
4152 .to_offset(&buffer)
4153 .to_inclusive()
4154 });
4155 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
4156 if active_primary_range.contains(&selection.head()) {
4157 *active_primary_range.end()
4158 } else {
4159 selection.head()
4160 }
4161 } else {
4162 selection.head()
4163 };
4164
4165 loop {
4166 let mut diagnostics = if direction == Direction::Prev {
4167 buffer.diagnostics_in_range::<_, usize>(0..search_start, true)
4168 } else {
4169 buffer.diagnostics_in_range::<_, usize>(search_start..buffer.len(), false)
4170 };
4171 let group = diagnostics.find_map(|entry| {
4172 if entry.diagnostic.is_primary
4173 && entry.diagnostic.severity <= DiagnosticSeverity::WARNING
4174 && !entry.range.is_empty()
4175 && Some(entry.range.end) != active_primary_range.as_ref().map(|r| *r.end())
4176 {
4177 Some((entry.range, entry.diagnostic.group_id))
4178 } else {
4179 None
4180 }
4181 });
4182
4183 if let Some((primary_range, group_id)) = group {
4184 self.activate_diagnostics(group_id, cx);
4185 self.update_selections(
4186 vec![Selection {
4187 id: selection.id,
4188 start: primary_range.start,
4189 end: primary_range.start,
4190 reversed: false,
4191 goal: SelectionGoal::None,
4192 }],
4193 Some(Autoscroll::Center),
4194 cx,
4195 );
4196 break;
4197 } else {
4198 // Cycle around to the start of the buffer, potentially moving back to the start of
4199 // the currently active diagnostic.
4200 active_primary_range.take();
4201 if direction == Direction::Prev {
4202 if search_start == buffer.len() {
4203 break;
4204 } else {
4205 search_start = buffer.len();
4206 }
4207 } else {
4208 if search_start == 0 {
4209 break;
4210 } else {
4211 search_start = 0;
4212 }
4213 }
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 project = workspace.project().clone();
4243 let definitions = project.update(cx, |project, cx| project.definition(&buffer, head, cx));
4244 cx.spawn(|workspace, mut cx| async move {
4245 let definitions = definitions.await?;
4246 workspace.update(&mut cx, |workspace, cx| {
4247 let nav_history = workspace.active_pane().read(cx).nav_history().clone();
4248 for definition in definitions {
4249 let range = definition.range.to_offset(definition.buffer.read(cx));
4250
4251 let target_editor_handle = workspace.open_project_item(definition.buffer, cx);
4252 target_editor_handle.update(cx, |target_editor, cx| {
4253 // When selecting a definition in a different buffer, disable the nav history
4254 // to avoid creating a history entry at the previous cursor location.
4255 if editor_handle != target_editor_handle {
4256 nav_history.borrow_mut().disable();
4257 }
4258 target_editor.select_ranges([range], Some(Autoscroll::Center), cx);
4259 nav_history.borrow_mut().enable();
4260 });
4261 }
4262 });
4263
4264 Ok::<(), anyhow::Error>(())
4265 })
4266 .detach_and_log_err(cx);
4267 }
4268
4269 pub fn find_all_references(
4270 workspace: &mut Workspace,
4271 _: &FindAllReferences,
4272 cx: &mut ViewContext<Workspace>,
4273 ) -> Option<Task<Result<()>>> {
4274 let active_item = workspace.active_item(cx)?;
4275 let editor_handle = active_item.act_as::<Self>(cx)?;
4276
4277 let editor = editor_handle.read(cx);
4278 let head = editor.newest_selection::<usize>(cx).head();
4279 let (buffer, head) = editor.buffer.read(cx).text_anchor_for_position(head, cx)?;
4280 let replica_id = editor.replica_id(cx);
4281
4282 let project = workspace.project().clone();
4283 let references = project.update(cx, |project, cx| project.references(&buffer, head, cx));
4284 Some(cx.spawn(|workspace, mut cx| async move {
4285 let mut locations = references.await?;
4286 if locations.is_empty() {
4287 return Ok(());
4288 }
4289
4290 locations.sort_by_key(|location| location.buffer.id());
4291 let mut locations = locations.into_iter().peekable();
4292 let mut ranges_to_highlight = Vec::new();
4293
4294 let excerpt_buffer = cx.add_model(|cx| {
4295 let mut symbol_name = None;
4296 let mut multibuffer = MultiBuffer::new(replica_id);
4297 while let Some(location) = locations.next() {
4298 let buffer = location.buffer.read(cx);
4299 let mut ranges_for_buffer = Vec::new();
4300 let range = location.range.to_offset(buffer);
4301 ranges_for_buffer.push(range.clone());
4302 if symbol_name.is_none() {
4303 symbol_name = Some(buffer.text_for_range(range).collect::<String>());
4304 }
4305
4306 while let Some(next_location) = locations.peek() {
4307 if next_location.buffer == location.buffer {
4308 ranges_for_buffer.push(next_location.range.to_offset(buffer));
4309 locations.next();
4310 } else {
4311 break;
4312 }
4313 }
4314
4315 ranges_for_buffer.sort_by_key(|range| (range.start, Reverse(range.end)));
4316 ranges_to_highlight.extend(multibuffer.push_excerpts_with_context_lines(
4317 location.buffer.clone(),
4318 ranges_for_buffer,
4319 1,
4320 cx,
4321 ));
4322 }
4323 multibuffer.with_title(format!("References to `{}`", symbol_name.unwrap()))
4324 });
4325
4326 workspace.update(&mut cx, |workspace, cx| {
4327 let editor =
4328 cx.add_view(|cx| Editor::for_multibuffer(excerpt_buffer, Some(project), cx));
4329 editor.update(cx, |editor, cx| {
4330 let color = editor.style(cx).highlighted_line_background;
4331 editor.highlight_background::<Self>(ranges_to_highlight, color, cx);
4332 });
4333 workspace.add_item(Box::new(editor), cx);
4334 });
4335
4336 Ok(())
4337 }))
4338 }
4339
4340 pub fn rename(&mut self, _: &Rename, cx: &mut ViewContext<Self>) -> Option<Task<Result<()>>> {
4341 use language::ToOffset as _;
4342
4343 let project = self.project.clone()?;
4344 let selection = self.newest_anchor_selection().clone();
4345 let (cursor_buffer, cursor_buffer_position) = self
4346 .buffer
4347 .read(cx)
4348 .text_anchor_for_position(selection.head(), cx)?;
4349 let (tail_buffer, _) = self
4350 .buffer
4351 .read(cx)
4352 .text_anchor_for_position(selection.tail(), cx)?;
4353 if tail_buffer != cursor_buffer {
4354 return None;
4355 }
4356
4357 let snapshot = cursor_buffer.read(cx).snapshot();
4358 let cursor_buffer_offset = cursor_buffer_position.to_offset(&snapshot);
4359 let prepare_rename = project.update(cx, |project, cx| {
4360 project.prepare_rename(cursor_buffer, cursor_buffer_offset, cx)
4361 });
4362
4363 Some(cx.spawn(|this, mut cx| async move {
4364 if let Some(rename_range) = prepare_rename.await? {
4365 let rename_buffer_range = rename_range.to_offset(&snapshot);
4366 let cursor_offset_in_rename_range =
4367 cursor_buffer_offset.saturating_sub(rename_buffer_range.start);
4368
4369 this.update(&mut cx, |this, cx| {
4370 this.take_rename(false, cx);
4371 let style = this.style(cx);
4372 let buffer = this.buffer.read(cx).read(cx);
4373 let cursor_offset = selection.head().to_offset(&buffer);
4374 let rename_start = cursor_offset.saturating_sub(cursor_offset_in_rename_range);
4375 let rename_end = rename_start + rename_buffer_range.len();
4376 let range = buffer.anchor_before(rename_start)..buffer.anchor_after(rename_end);
4377 let mut old_highlight_id = None;
4378 let old_name = buffer
4379 .chunks(rename_start..rename_end, true)
4380 .map(|chunk| {
4381 if old_highlight_id.is_none() {
4382 old_highlight_id = chunk.syntax_highlight_id;
4383 }
4384 chunk.text
4385 })
4386 .collect();
4387
4388 drop(buffer);
4389
4390 // Position the selection in the rename editor so that it matches the current selection.
4391 this.show_local_selections = false;
4392 let rename_editor = cx.add_view(|cx| {
4393 let mut editor = Editor::single_line(None, cx);
4394 if let Some(old_highlight_id) = old_highlight_id {
4395 editor.override_text_style =
4396 Some(Box::new(move |style| old_highlight_id.style(&style.syntax)));
4397 }
4398 editor
4399 .buffer
4400 .update(cx, |buffer, cx| buffer.edit([0..0], &old_name, cx));
4401 editor.select_all(&SelectAll, cx);
4402 editor
4403 });
4404
4405 let ranges = this
4406 .clear_background_highlights::<DocumentHighlightWrite>(cx)
4407 .into_iter()
4408 .flat_map(|(_, ranges)| ranges)
4409 .chain(
4410 this.clear_background_highlights::<DocumentHighlightRead>(cx)
4411 .into_iter()
4412 .flat_map(|(_, ranges)| ranges),
4413 )
4414 .collect();
4415 this.highlight_text::<Rename>(
4416 ranges,
4417 HighlightStyle {
4418 fade_out: Some(style.rename_fade),
4419 ..Default::default()
4420 },
4421 cx,
4422 );
4423 cx.focus(&rename_editor);
4424 let block_id = this.insert_blocks(
4425 [BlockProperties {
4426 position: range.start.clone(),
4427 height: 1,
4428 render: Arc::new({
4429 let editor = rename_editor.clone();
4430 move |cx: &BlockContext| {
4431 ChildView::new(editor.clone())
4432 .contained()
4433 .with_padding_left(cx.anchor_x)
4434 .boxed()
4435 }
4436 }),
4437 disposition: BlockDisposition::Below,
4438 }],
4439 cx,
4440 )[0];
4441 this.pending_rename = Some(RenameState {
4442 range,
4443 old_name,
4444 editor: rename_editor,
4445 block_id,
4446 });
4447 });
4448 }
4449
4450 Ok(())
4451 }))
4452 }
4453
4454 pub fn confirm_rename(
4455 workspace: &mut Workspace,
4456 _: &ConfirmRename,
4457 cx: &mut ViewContext<Workspace>,
4458 ) -> Option<Task<Result<()>>> {
4459 let editor = workspace.active_item(cx)?.act_as::<Editor>(cx)?;
4460
4461 let (buffer, range, old_name, new_name) = editor.update(cx, |editor, cx| {
4462 let rename = editor.take_rename(false, cx)?;
4463 let buffer = editor.buffer.read(cx);
4464 let (start_buffer, start) =
4465 buffer.text_anchor_for_position(rename.range.start.clone(), cx)?;
4466 let (end_buffer, end) =
4467 buffer.text_anchor_for_position(rename.range.end.clone(), cx)?;
4468 if start_buffer == end_buffer {
4469 let new_name = rename.editor.read(cx).text(cx);
4470 Some((start_buffer, start..end, rename.old_name, new_name))
4471 } else {
4472 None
4473 }
4474 })?;
4475
4476 let rename = workspace.project().clone().update(cx, |project, cx| {
4477 project.perform_rename(
4478 buffer.clone(),
4479 range.start.clone(),
4480 new_name.clone(),
4481 true,
4482 cx,
4483 )
4484 });
4485
4486 Some(cx.spawn(|workspace, mut cx| async move {
4487 let project_transaction = rename.await?;
4488 Self::open_project_transaction(
4489 editor.clone(),
4490 workspace,
4491 project_transaction,
4492 format!("Rename: {} → {}", old_name, new_name),
4493 cx.clone(),
4494 )
4495 .await?;
4496
4497 editor.update(&mut cx, |editor, cx| {
4498 editor.refresh_document_highlights(cx);
4499 });
4500 Ok(())
4501 }))
4502 }
4503
4504 fn take_rename(
4505 &mut self,
4506 moving_cursor: bool,
4507 cx: &mut ViewContext<Self>,
4508 ) -> Option<RenameState> {
4509 let rename = self.pending_rename.take()?;
4510 self.remove_blocks([rename.block_id].into_iter().collect(), cx);
4511 self.clear_text_highlights::<Rename>(cx);
4512 self.show_local_selections = true;
4513
4514 if moving_cursor {
4515 let cursor_in_rename_editor =
4516 rename.editor.read(cx).newest_selection::<usize>(cx).head();
4517
4518 // Update the selection to match the position of the selection inside
4519 // the rename editor.
4520 let snapshot = self.buffer.read(cx).read(cx);
4521 let rename_range = rename.range.to_offset(&snapshot);
4522 let cursor_in_editor = snapshot
4523 .clip_offset(rename_range.start + cursor_in_rename_editor, Bias::Left)
4524 .min(rename_range.end);
4525 drop(snapshot);
4526
4527 self.update_selections(
4528 vec![Selection {
4529 id: self.newest_anchor_selection().id,
4530 start: cursor_in_editor,
4531 end: cursor_in_editor,
4532 reversed: false,
4533 goal: SelectionGoal::None,
4534 }],
4535 None,
4536 cx,
4537 );
4538 }
4539
4540 Some(rename)
4541 }
4542
4543 fn invalidate_rename_range(
4544 &mut self,
4545 buffer: &MultiBufferSnapshot,
4546 cx: &mut ViewContext<Self>,
4547 ) {
4548 if let Some(rename) = self.pending_rename.as_ref() {
4549 if self.selections.len() == 1 {
4550 let head = self.selections[0].head().to_offset(buffer);
4551 let range = rename.range.to_offset(buffer).to_inclusive();
4552 if range.contains(&head) {
4553 return;
4554 }
4555 }
4556 let rename = self.pending_rename.take().unwrap();
4557 self.remove_blocks([rename.block_id].into_iter().collect(), cx);
4558 self.clear_background_highlights::<Rename>(cx);
4559 }
4560 }
4561
4562 #[cfg(any(test, feature = "test-support"))]
4563 pub fn pending_rename(&self) -> Option<&RenameState> {
4564 self.pending_rename.as_ref()
4565 }
4566
4567 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
4568 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
4569 let buffer = self.buffer.read(cx).snapshot(cx);
4570 let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
4571 let is_valid = buffer
4572 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone(), false)
4573 .any(|entry| {
4574 entry.diagnostic.is_primary
4575 && !entry.range.is_empty()
4576 && entry.range.start == primary_range_start
4577 && entry.diagnostic.message == active_diagnostics.primary_message
4578 });
4579
4580 if is_valid != active_diagnostics.is_valid {
4581 active_diagnostics.is_valid = is_valid;
4582 let mut new_styles = HashMap::default();
4583 for (block_id, diagnostic) in &active_diagnostics.blocks {
4584 new_styles.insert(
4585 *block_id,
4586 diagnostic_block_renderer(diagnostic.clone(), is_valid),
4587 );
4588 }
4589 self.display_map
4590 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
4591 }
4592 }
4593 }
4594
4595 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) {
4596 self.dismiss_diagnostics(cx);
4597 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
4598 let buffer = self.buffer.read(cx).snapshot(cx);
4599
4600 let mut primary_range = None;
4601 let mut primary_message = None;
4602 let mut group_end = Point::zero();
4603 let diagnostic_group = buffer
4604 .diagnostic_group::<Point>(group_id)
4605 .map(|entry| {
4606 if entry.range.end > group_end {
4607 group_end = entry.range.end;
4608 }
4609 if entry.diagnostic.is_primary {
4610 primary_range = Some(entry.range.clone());
4611 primary_message = Some(entry.diagnostic.message.clone());
4612 }
4613 entry
4614 })
4615 .collect::<Vec<_>>();
4616 let primary_range = primary_range.unwrap();
4617 let primary_message = primary_message.unwrap();
4618 let primary_range =
4619 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
4620
4621 let blocks = display_map
4622 .insert_blocks(
4623 diagnostic_group.iter().map(|entry| {
4624 let diagnostic = entry.diagnostic.clone();
4625 let message_height = diagnostic.message.lines().count() as u8;
4626 BlockProperties {
4627 position: buffer.anchor_after(entry.range.start),
4628 height: message_height,
4629 render: diagnostic_block_renderer(diagnostic, true),
4630 disposition: BlockDisposition::Below,
4631 }
4632 }),
4633 cx,
4634 )
4635 .into_iter()
4636 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
4637 .collect();
4638
4639 Some(ActiveDiagnosticGroup {
4640 primary_range,
4641 primary_message,
4642 blocks,
4643 is_valid: true,
4644 })
4645 });
4646 }
4647
4648 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
4649 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
4650 self.display_map.update(cx, |display_map, cx| {
4651 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
4652 });
4653 cx.notify();
4654 }
4655 }
4656
4657 fn build_columnar_selection(
4658 &mut self,
4659 display_map: &DisplaySnapshot,
4660 row: u32,
4661 columns: &Range<u32>,
4662 reversed: bool,
4663 ) -> Option<Selection<Point>> {
4664 let is_empty = columns.start == columns.end;
4665 let line_len = display_map.line_len(row);
4666 if columns.start < line_len || (is_empty && columns.start == line_len) {
4667 let start = DisplayPoint::new(row, columns.start);
4668 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
4669 Some(Selection {
4670 id: post_inc(&mut self.next_selection_id),
4671 start: start.to_point(display_map),
4672 end: end.to_point(display_map),
4673 reversed,
4674 goal: SelectionGoal::ColumnRange {
4675 start: columns.start,
4676 end: columns.end,
4677 },
4678 })
4679 } else {
4680 None
4681 }
4682 }
4683
4684 pub fn local_selections_in_range(
4685 &self,
4686 range: Range<Anchor>,
4687 display_map: &DisplaySnapshot,
4688 ) -> Vec<Selection<Point>> {
4689 let buffer = &display_map.buffer_snapshot;
4690
4691 let start_ix = match self
4692 .selections
4693 .binary_search_by(|probe| probe.end.cmp(&range.start, &buffer).unwrap())
4694 {
4695 Ok(ix) | Err(ix) => ix,
4696 };
4697 let end_ix = match self
4698 .selections
4699 .binary_search_by(|probe| probe.start.cmp(&range.end, &buffer).unwrap())
4700 {
4701 Ok(ix) => ix + 1,
4702 Err(ix) => ix,
4703 };
4704
4705 fn point_selection(
4706 selection: &Selection<Anchor>,
4707 buffer: &MultiBufferSnapshot,
4708 ) -> Selection<Point> {
4709 let start = selection.start.to_point(&buffer);
4710 let end = selection.end.to_point(&buffer);
4711 Selection {
4712 id: selection.id,
4713 start,
4714 end,
4715 reversed: selection.reversed,
4716 goal: selection.goal,
4717 }
4718 }
4719
4720 self.selections[start_ix..end_ix]
4721 .iter()
4722 .chain(
4723 self.pending_selection
4724 .as_ref()
4725 .map(|pending| &pending.selection),
4726 )
4727 .map(|s| point_selection(s, &buffer))
4728 .collect()
4729 }
4730
4731 pub fn local_selections<'a, D>(&self, cx: &'a AppContext) -> Vec<Selection<D>>
4732 where
4733 D: 'a + TextDimension + Ord + Sub<D, Output = D>,
4734 {
4735 let buffer = self.buffer.read(cx).snapshot(cx);
4736 let mut selections = self
4737 .resolve_selections::<D, _>(self.selections.iter(), &buffer)
4738 .peekable();
4739
4740 let mut pending_selection = self.pending_selection::<D>(&buffer);
4741
4742 iter::from_fn(move || {
4743 if let Some(pending) = pending_selection.as_mut() {
4744 while let Some(next_selection) = selections.peek() {
4745 if pending.start <= next_selection.end && pending.end >= next_selection.start {
4746 let next_selection = selections.next().unwrap();
4747 if next_selection.start < pending.start {
4748 pending.start = next_selection.start;
4749 }
4750 if next_selection.end > pending.end {
4751 pending.end = next_selection.end;
4752 }
4753 } else if next_selection.end < pending.start {
4754 return selections.next();
4755 } else {
4756 break;
4757 }
4758 }
4759
4760 pending_selection.take()
4761 } else {
4762 selections.next()
4763 }
4764 })
4765 .collect()
4766 }
4767
4768 fn resolve_selections<'a, D, I>(
4769 &self,
4770 selections: I,
4771 snapshot: &MultiBufferSnapshot,
4772 ) -> impl 'a + Iterator<Item = Selection<D>>
4773 where
4774 D: TextDimension + Ord + Sub<D, Output = D>,
4775 I: 'a + IntoIterator<Item = &'a Selection<Anchor>>,
4776 {
4777 let (to_summarize, selections) = selections.into_iter().tee();
4778 let mut summaries = snapshot
4779 .summaries_for_anchors::<D, _>(to_summarize.flat_map(|s| [&s.start, &s.end]))
4780 .into_iter();
4781 selections.map(move |s| Selection {
4782 id: s.id,
4783 start: summaries.next().unwrap(),
4784 end: summaries.next().unwrap(),
4785 reversed: s.reversed,
4786 goal: s.goal,
4787 })
4788 }
4789
4790 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4791 &self,
4792 snapshot: &MultiBufferSnapshot,
4793 ) -> Option<Selection<D>> {
4794 self.pending_selection
4795 .as_ref()
4796 .map(|pending| self.resolve_selection(&pending.selection, &snapshot))
4797 }
4798
4799 fn resolve_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4800 &self,
4801 selection: &Selection<Anchor>,
4802 buffer: &MultiBufferSnapshot,
4803 ) -> Selection<D> {
4804 Selection {
4805 id: selection.id,
4806 start: selection.start.summary::<D>(&buffer),
4807 end: selection.end.summary::<D>(&buffer),
4808 reversed: selection.reversed,
4809 goal: selection.goal,
4810 }
4811 }
4812
4813 fn selection_count<'a>(&self) -> usize {
4814 let mut count = self.selections.len();
4815 if self.pending_selection.is_some() {
4816 count += 1;
4817 }
4818 count
4819 }
4820
4821 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4822 &self,
4823 cx: &AppContext,
4824 ) -> Selection<D> {
4825 let snapshot = self.buffer.read(cx).read(cx);
4826 self.selections
4827 .iter()
4828 .min_by_key(|s| s.id)
4829 .map(|selection| self.resolve_selection(selection, &snapshot))
4830 .or_else(|| self.pending_selection(&snapshot))
4831 .unwrap()
4832 }
4833
4834 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4835 &self,
4836 cx: &AppContext,
4837 ) -> Selection<D> {
4838 self.resolve_selection(
4839 self.newest_anchor_selection(),
4840 &self.buffer.read(cx).read(cx),
4841 )
4842 }
4843
4844 pub fn newest_selection_with_snapshot<D: TextDimension + Ord + Sub<D, Output = D>>(
4845 &self,
4846 snapshot: &MultiBufferSnapshot,
4847 ) -> Selection<D> {
4848 self.resolve_selection(self.newest_anchor_selection(), snapshot)
4849 }
4850
4851 pub fn newest_anchor_selection(&self) -> &Selection<Anchor> {
4852 self.pending_selection
4853 .as_ref()
4854 .map(|s| &s.selection)
4855 .or_else(|| self.selections.iter().max_by_key(|s| s.id))
4856 .unwrap()
4857 }
4858
4859 pub fn update_selections<T>(
4860 &mut self,
4861 mut selections: Vec<Selection<T>>,
4862 autoscroll: Option<Autoscroll>,
4863 cx: &mut ViewContext<Self>,
4864 ) where
4865 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
4866 {
4867 let buffer = self.buffer.read(cx).snapshot(cx);
4868 selections.sort_unstable_by_key(|s| s.start);
4869
4870 // Merge overlapping selections.
4871 let mut i = 1;
4872 while i < selections.len() {
4873 if selections[i - 1].end >= selections[i].start {
4874 let removed = selections.remove(i);
4875 if removed.start < selections[i - 1].start {
4876 selections[i - 1].start = removed.start;
4877 }
4878 if removed.end > selections[i - 1].end {
4879 selections[i - 1].end = removed.end;
4880 }
4881 } else {
4882 i += 1;
4883 }
4884 }
4885
4886 if let Some(autoscroll) = autoscroll {
4887 self.request_autoscroll(autoscroll, cx);
4888 }
4889
4890 self.set_selections(
4891 Arc::from_iter(selections.into_iter().map(|selection| {
4892 let end_bias = if selection.end > selection.start {
4893 Bias::Left
4894 } else {
4895 Bias::Right
4896 };
4897 Selection {
4898 id: selection.id,
4899 start: buffer.anchor_after(selection.start),
4900 end: buffer.anchor_at(selection.end, end_bias),
4901 reversed: selection.reversed,
4902 goal: selection.goal,
4903 }
4904 })),
4905 None,
4906 true,
4907 cx,
4908 );
4909 }
4910
4911 pub fn set_selections_from_remote(
4912 &mut self,
4913 mut selections: Vec<Selection<Anchor>>,
4914 cx: &mut ViewContext<Self>,
4915 ) {
4916 let buffer = self.buffer.read(cx);
4917 let buffer = buffer.read(cx);
4918 selections.sort_by(|a, b| {
4919 a.start
4920 .cmp(&b.start, &*buffer)
4921 .unwrap()
4922 .then_with(|| b.end.cmp(&a.end, &*buffer).unwrap())
4923 });
4924
4925 // Merge overlapping selections
4926 let mut i = 1;
4927 while i < selections.len() {
4928 if selections[i - 1]
4929 .end
4930 .cmp(&selections[i].start, &*buffer)
4931 .unwrap()
4932 .is_ge()
4933 {
4934 let removed = selections.remove(i);
4935 if removed
4936 .start
4937 .cmp(&selections[i - 1].start, &*buffer)
4938 .unwrap()
4939 .is_lt()
4940 {
4941 selections[i - 1].start = removed.start;
4942 }
4943 if removed
4944 .end
4945 .cmp(&selections[i - 1].end, &*buffer)
4946 .unwrap()
4947 .is_gt()
4948 {
4949 selections[i - 1].end = removed.end;
4950 }
4951 } else {
4952 i += 1;
4953 }
4954 }
4955
4956 drop(buffer);
4957 self.set_selections(selections.into(), None, false, cx);
4958 }
4959
4960 /// Compute new ranges for any selections that were located in excerpts that have
4961 /// since been removed.
4962 ///
4963 /// Returns a `HashMap` indicating which selections whose former head position
4964 /// was no longer present. The keys of the map are selection ids. The values are
4965 /// the id of the new excerpt where the head of the selection has been moved.
4966 pub fn refresh_selections(&mut self, cx: &mut ViewContext<Self>) -> HashMap<usize, ExcerptId> {
4967 let snapshot = self.buffer.read(cx).read(cx);
4968 let mut selections_with_lost_position = HashMap::default();
4969
4970 let mut pending_selection = self.pending_selection.take();
4971 if let Some(pending) = pending_selection.as_mut() {
4972 let anchors =
4973 snapshot.refresh_anchors([&pending.selection.start, &pending.selection.end]);
4974 let (_, start, kept_start) = anchors[0].clone();
4975 let (_, end, kept_end) = anchors[1].clone();
4976 let kept_head = if pending.selection.reversed {
4977 kept_start
4978 } else {
4979 kept_end
4980 };
4981 if !kept_head {
4982 selections_with_lost_position.insert(
4983 pending.selection.id,
4984 pending.selection.head().excerpt_id.clone(),
4985 );
4986 }
4987
4988 pending.selection.start = start;
4989 pending.selection.end = end;
4990 }
4991
4992 let anchors_with_status = snapshot.refresh_anchors(
4993 self.selections
4994 .iter()
4995 .flat_map(|selection| [&selection.start, &selection.end]),
4996 );
4997 self.selections = anchors_with_status
4998 .chunks(2)
4999 .map(|selection_anchors| {
5000 let (anchor_ix, start, kept_start) = selection_anchors[0].clone();
5001 let (_, end, kept_end) = selection_anchors[1].clone();
5002 let selection = &self.selections[anchor_ix / 2];
5003 let kept_head = if selection.reversed {
5004 kept_start
5005 } else {
5006 kept_end
5007 };
5008 if !kept_head {
5009 selections_with_lost_position
5010 .insert(selection.id, selection.head().excerpt_id.clone());
5011 }
5012
5013 Selection {
5014 id: selection.id,
5015 start,
5016 end,
5017 reversed: selection.reversed,
5018 goal: selection.goal,
5019 }
5020 })
5021 .collect();
5022 drop(snapshot);
5023
5024 let new_selections = self.local_selections::<usize>(cx);
5025 if !new_selections.is_empty() {
5026 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
5027 }
5028 self.pending_selection = pending_selection;
5029
5030 selections_with_lost_position
5031 }
5032
5033 fn set_selections(
5034 &mut self,
5035 selections: Arc<[Selection<Anchor>]>,
5036 pending_selection: Option<PendingSelection>,
5037 local: bool,
5038 cx: &mut ViewContext<Self>,
5039 ) {
5040 assert!(
5041 !selections.is_empty() || pending_selection.is_some(),
5042 "must have at least one selection"
5043 );
5044
5045 let old_cursor_position = self.newest_anchor_selection().head();
5046
5047 self.selections = selections;
5048 self.pending_selection = pending_selection;
5049 if self.focused && self.leader_replica_id.is_none() {
5050 self.buffer.update(cx, |buffer, cx| {
5051 buffer.set_active_selections(&self.selections, cx)
5052 });
5053 }
5054
5055 let display_map = self
5056 .display_map
5057 .update(cx, |display_map, cx| display_map.snapshot(cx));
5058 let buffer = &display_map.buffer_snapshot;
5059 self.add_selections_state = None;
5060 self.select_next_state = None;
5061 self.select_larger_syntax_node_stack.clear();
5062 self.autoclose_stack.invalidate(&self.selections, &buffer);
5063 self.snippet_stack.invalidate(&self.selections, &buffer);
5064 self.invalidate_rename_range(&buffer, cx);
5065
5066 let new_cursor_position = self.newest_anchor_selection().head();
5067
5068 self.push_to_nav_history(
5069 old_cursor_position.clone(),
5070 Some(new_cursor_position.to_point(&buffer)),
5071 cx,
5072 );
5073
5074 if local {
5075 let completion_menu = match self.context_menu.as_mut() {
5076 Some(ContextMenu::Completions(menu)) => Some(menu),
5077 _ => {
5078 self.context_menu.take();
5079 None
5080 }
5081 };
5082
5083 if let Some(completion_menu) = completion_menu {
5084 let cursor_position = new_cursor_position.to_offset(&buffer);
5085 let (word_range, kind) =
5086 buffer.surrounding_word(completion_menu.initial_position.clone());
5087 if kind == Some(CharKind::Word)
5088 && word_range.to_inclusive().contains(&cursor_position)
5089 {
5090 let query = Self::completion_query(&buffer, cursor_position);
5091 cx.background()
5092 .block(completion_menu.filter(query.as_deref(), cx.background().clone()));
5093 self.show_completions(&ShowCompletions, cx);
5094 } else {
5095 self.hide_context_menu(cx);
5096 }
5097 }
5098
5099 if old_cursor_position.to_display_point(&display_map).row()
5100 != new_cursor_position.to_display_point(&display_map).row()
5101 {
5102 self.available_code_actions.take();
5103 }
5104 self.refresh_code_actions(cx);
5105 self.refresh_document_highlights(cx);
5106 }
5107
5108 self.pause_cursor_blinking(cx);
5109 cx.emit(Event::SelectionsChanged { local });
5110 }
5111
5112 pub fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
5113 self.autoscroll_request = Some((autoscroll, true));
5114 cx.notify();
5115 }
5116
5117 fn request_autoscroll_remotely(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
5118 self.autoscroll_request = Some((autoscroll, false));
5119 cx.notify();
5120 }
5121
5122 pub fn transact(
5123 &mut self,
5124 cx: &mut ViewContext<Self>,
5125 update: impl FnOnce(&mut Self, &mut ViewContext<Self>),
5126 ) {
5127 self.start_transaction_at(Instant::now(), cx);
5128 update(self, cx);
5129 self.end_transaction_at(Instant::now(), cx);
5130 }
5131
5132 fn start_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
5133 self.end_selection(cx);
5134 if let Some(tx_id) = self
5135 .buffer
5136 .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
5137 {
5138 self.selection_history
5139 .insert(tx_id, (self.selections.clone(), None));
5140 }
5141 }
5142
5143 fn end_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
5144 if let Some(tx_id) = self
5145 .buffer
5146 .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
5147 {
5148 if let Some((_, end_selections)) = self.selection_history.get_mut(&tx_id) {
5149 *end_selections = Some(self.selections.clone());
5150 } else {
5151 log::error!("unexpectedly ended a transaction that wasn't started by this editor");
5152 }
5153
5154 cx.emit(Event::Edited);
5155 }
5156 }
5157
5158 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
5159 log::info!("Editor::page_up");
5160 }
5161
5162 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
5163 log::info!("Editor::page_down");
5164 }
5165
5166 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
5167 let mut fold_ranges = Vec::new();
5168
5169 let selections = self.local_selections::<Point>(cx);
5170 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
5171 for selection in selections {
5172 let range = selection.display_range(&display_map).sorted();
5173 let buffer_start_row = range.start.to_point(&display_map).row;
5174
5175 for row in (0..=range.end.row()).rev() {
5176 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
5177 let fold_range = self.foldable_range_for_line(&display_map, row);
5178 if fold_range.end.row >= buffer_start_row {
5179 fold_ranges.push(fold_range);
5180 if row <= range.start.row() {
5181 break;
5182 }
5183 }
5184 }
5185 }
5186 }
5187
5188 self.fold_ranges(fold_ranges, cx);
5189 }
5190
5191 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
5192 let selections = self.local_selections::<Point>(cx);
5193 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
5194 let buffer = &display_map.buffer_snapshot;
5195 let ranges = selections
5196 .iter()
5197 .map(|s| {
5198 let range = s.display_range(&display_map).sorted();
5199 let mut start = range.start.to_point(&display_map);
5200 let mut end = range.end.to_point(&display_map);
5201 start.column = 0;
5202 end.column = buffer.line_len(end.row);
5203 start..end
5204 })
5205 .collect::<Vec<_>>();
5206 self.unfold_ranges(ranges, cx);
5207 }
5208
5209 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
5210 let max_point = display_map.max_point();
5211 if display_row >= max_point.row() {
5212 false
5213 } else {
5214 let (start_indent, is_blank) = display_map.line_indent(display_row);
5215 if is_blank {
5216 false
5217 } else {
5218 for display_row in display_row + 1..=max_point.row() {
5219 let (indent, is_blank) = display_map.line_indent(display_row);
5220 if !is_blank {
5221 return indent > start_indent;
5222 }
5223 }
5224 false
5225 }
5226 }
5227 }
5228
5229 fn foldable_range_for_line(
5230 &self,
5231 display_map: &DisplaySnapshot,
5232 start_row: u32,
5233 ) -> Range<Point> {
5234 let max_point = display_map.max_point();
5235
5236 let (start_indent, _) = display_map.line_indent(start_row);
5237 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
5238 let mut end = None;
5239 for row in start_row + 1..=max_point.row() {
5240 let (indent, is_blank) = display_map.line_indent(row);
5241 if !is_blank && indent <= start_indent {
5242 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
5243 break;
5244 }
5245 }
5246
5247 let end = end.unwrap_or(max_point);
5248 return start.to_point(display_map)..end.to_point(display_map);
5249 }
5250
5251 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
5252 let selections = self.local_selections::<Point>(cx);
5253 let ranges = selections.into_iter().map(|s| s.start..s.end);
5254 self.fold_ranges(ranges, cx);
5255 }
5256
5257 fn fold_ranges<T: ToOffset>(
5258 &mut self,
5259 ranges: impl IntoIterator<Item = Range<T>>,
5260 cx: &mut ViewContext<Self>,
5261 ) {
5262 let mut ranges = ranges.into_iter().peekable();
5263 if ranges.peek().is_some() {
5264 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
5265 self.request_autoscroll(Autoscroll::Fit, cx);
5266 cx.notify();
5267 }
5268 }
5269
5270 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
5271 if !ranges.is_empty() {
5272 self.display_map
5273 .update(cx, |map, cx| map.unfold(ranges, cx));
5274 self.request_autoscroll(Autoscroll::Fit, cx);
5275 cx.notify();
5276 }
5277 }
5278
5279 pub fn insert_blocks(
5280 &mut self,
5281 blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
5282 cx: &mut ViewContext<Self>,
5283 ) -> Vec<BlockId> {
5284 let blocks = self
5285 .display_map
5286 .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
5287 self.request_autoscroll(Autoscroll::Fit, cx);
5288 blocks
5289 }
5290
5291 pub fn replace_blocks(
5292 &mut self,
5293 blocks: HashMap<BlockId, RenderBlock>,
5294 cx: &mut ViewContext<Self>,
5295 ) {
5296 self.display_map
5297 .update(cx, |display_map, _| display_map.replace_blocks(blocks));
5298 self.request_autoscroll(Autoscroll::Fit, cx);
5299 }
5300
5301 pub fn remove_blocks(&mut self, block_ids: HashSet<BlockId>, cx: &mut ViewContext<Self>) {
5302 self.display_map.update(cx, |display_map, cx| {
5303 display_map.remove_blocks(block_ids, cx)
5304 });
5305 }
5306
5307 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
5308 self.display_map
5309 .update(cx, |map, cx| map.snapshot(cx))
5310 .longest_row()
5311 }
5312
5313 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
5314 self.display_map
5315 .update(cx, |map, cx| map.snapshot(cx))
5316 .max_point()
5317 }
5318
5319 pub fn text(&self, cx: &AppContext) -> String {
5320 self.buffer.read(cx).read(cx).text()
5321 }
5322
5323 pub fn set_text(&mut self, text: impl Into<String>, cx: &mut ViewContext<Self>) {
5324 self.transact(cx, |this, cx| {
5325 this.buffer
5326 .read(cx)
5327 .as_singleton()
5328 .expect("you can only call set_text on editors for singleton buffers")
5329 .update(cx, |buffer, cx| buffer.set_text(text, cx));
5330 });
5331 }
5332
5333 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
5334 self.display_map
5335 .update(cx, |map, cx| map.snapshot(cx))
5336 .text()
5337 }
5338
5339 pub fn soft_wrap_mode(&self, cx: &AppContext) -> SoftWrap {
5340 let language = self.language(cx);
5341 let settings = cx.global::<Settings>();
5342 let mode = self
5343 .soft_wrap_mode_override
5344 .unwrap_or_else(|| settings.soft_wrap(language));
5345 match mode {
5346 settings::SoftWrap::None => SoftWrap::None,
5347 settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
5348 settings::SoftWrap::PreferredLineLength => {
5349 SoftWrap::Column(settings.preferred_line_length(language))
5350 }
5351 }
5352 }
5353
5354 pub fn set_soft_wrap_mode(&mut self, mode: settings::SoftWrap, cx: &mut ViewContext<Self>) {
5355 self.soft_wrap_mode_override = Some(mode);
5356 cx.notify();
5357 }
5358
5359 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
5360 self.display_map
5361 .update(cx, |map, cx| map.set_wrap_width(width, cx))
5362 }
5363
5364 pub fn highlight_rows(&mut self, rows: Option<Range<u32>>) {
5365 self.highlighted_rows = rows;
5366 }
5367
5368 pub fn highlighted_rows(&self) -> Option<Range<u32>> {
5369 self.highlighted_rows.clone()
5370 }
5371
5372 pub fn highlight_background<T: 'static>(
5373 &mut self,
5374 ranges: Vec<Range<Anchor>>,
5375 color: Color,
5376 cx: &mut ViewContext<Self>,
5377 ) {
5378 self.background_highlights
5379 .insert(TypeId::of::<T>(), (color, ranges));
5380 cx.notify();
5381 }
5382
5383 pub fn clear_background_highlights<T: 'static>(
5384 &mut self,
5385 cx: &mut ViewContext<Self>,
5386 ) -> Option<(Color, Vec<Range<Anchor>>)> {
5387 cx.notify();
5388 self.background_highlights.remove(&TypeId::of::<T>())
5389 }
5390
5391 #[cfg(feature = "test-support")]
5392 pub fn all_background_highlights(
5393 &mut self,
5394 cx: &mut ViewContext<Self>,
5395 ) -> Vec<(Range<DisplayPoint>, Color)> {
5396 let snapshot = self.snapshot(cx);
5397 let buffer = &snapshot.buffer_snapshot;
5398 let start = buffer.anchor_before(0);
5399 let end = buffer.anchor_after(buffer.len());
5400 self.background_highlights_in_range(start..end, &snapshot)
5401 }
5402
5403 pub fn background_highlights_for_type<T: 'static>(&self) -> Option<(Color, &[Range<Anchor>])> {
5404 self.background_highlights
5405 .get(&TypeId::of::<T>())
5406 .map(|(color, ranges)| (*color, ranges.as_slice()))
5407 }
5408
5409 pub fn background_highlights_in_range(
5410 &self,
5411 search_range: Range<Anchor>,
5412 display_snapshot: &DisplaySnapshot,
5413 ) -> Vec<(Range<DisplayPoint>, Color)> {
5414 let mut results = Vec::new();
5415 let buffer = &display_snapshot.buffer_snapshot;
5416 for (color, ranges) in self.background_highlights.values() {
5417 let start_ix = match ranges.binary_search_by(|probe| {
5418 let cmp = probe.end.cmp(&search_range.start, &buffer).unwrap();
5419 if cmp.is_gt() {
5420 Ordering::Greater
5421 } else {
5422 Ordering::Less
5423 }
5424 }) {
5425 Ok(i) | Err(i) => i,
5426 };
5427 for range in &ranges[start_ix..] {
5428 if range.start.cmp(&search_range.end, &buffer).unwrap().is_ge() {
5429 break;
5430 }
5431 let start = range
5432 .start
5433 .to_point(buffer)
5434 .to_display_point(display_snapshot);
5435 let end = range
5436 .end
5437 .to_point(buffer)
5438 .to_display_point(display_snapshot);
5439 results.push((start..end, *color))
5440 }
5441 }
5442 results
5443 }
5444
5445 pub fn highlight_text<T: 'static>(
5446 &mut self,
5447 ranges: Vec<Range<Anchor>>,
5448 style: HighlightStyle,
5449 cx: &mut ViewContext<Self>,
5450 ) {
5451 self.display_map.update(cx, |map, _| {
5452 map.highlight_text(TypeId::of::<T>(), ranges, style)
5453 });
5454 cx.notify();
5455 }
5456
5457 pub fn clear_text_highlights<T: 'static>(
5458 &mut self,
5459 cx: &mut ViewContext<Self>,
5460 ) -> Option<Arc<(HighlightStyle, Vec<Range<Anchor>>)>> {
5461 cx.notify();
5462 self.display_map
5463 .update(cx, |map, _| map.clear_text_highlights(TypeId::of::<T>()))
5464 }
5465
5466 fn next_blink_epoch(&mut self) -> usize {
5467 self.blink_epoch += 1;
5468 self.blink_epoch
5469 }
5470
5471 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
5472 if !self.focused {
5473 return;
5474 }
5475
5476 self.show_local_cursors = true;
5477 cx.notify();
5478
5479 let epoch = self.next_blink_epoch();
5480 cx.spawn(|this, mut cx| {
5481 let this = this.downgrade();
5482 async move {
5483 Timer::after(CURSOR_BLINK_INTERVAL).await;
5484 if let Some(this) = this.upgrade(&cx) {
5485 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
5486 }
5487 }
5488 })
5489 .detach();
5490 }
5491
5492 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
5493 if epoch == self.blink_epoch {
5494 self.blinking_paused = false;
5495 self.blink_cursors(epoch, cx);
5496 }
5497 }
5498
5499 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
5500 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
5501 self.show_local_cursors = !self.show_local_cursors;
5502 cx.notify();
5503
5504 let epoch = self.next_blink_epoch();
5505 cx.spawn(|this, mut cx| {
5506 let this = this.downgrade();
5507 async move {
5508 Timer::after(CURSOR_BLINK_INTERVAL).await;
5509 if let Some(this) = this.upgrade(&cx) {
5510 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
5511 }
5512 }
5513 })
5514 .detach();
5515 }
5516 }
5517
5518 pub fn show_local_cursors(&self) -> bool {
5519 self.show_local_cursors && self.focused
5520 }
5521
5522 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
5523 cx.notify();
5524 }
5525
5526 fn on_buffer_event(
5527 &mut self,
5528 _: ModelHandle<MultiBuffer>,
5529 event: &language::Event,
5530 cx: &mut ViewContext<Self>,
5531 ) {
5532 match event {
5533 language::Event::Edited => {
5534 self.refresh_active_diagnostics(cx);
5535 self.refresh_code_actions(cx);
5536 cx.emit(Event::BufferEdited);
5537 }
5538 language::Event::Dirtied => cx.emit(Event::Dirtied),
5539 language::Event::Saved => cx.emit(Event::Saved),
5540 language::Event::FileHandleChanged => cx.emit(Event::TitleChanged),
5541 language::Event::Reloaded => cx.emit(Event::TitleChanged),
5542 language::Event::Closed => cx.emit(Event::Closed),
5543 language::Event::DiagnosticsUpdated => {
5544 self.refresh_active_diagnostics(cx);
5545 }
5546 _ => {}
5547 }
5548 }
5549
5550 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
5551 cx.notify();
5552 }
5553
5554 pub fn set_searchable(&mut self, searchable: bool) {
5555 self.searchable = searchable;
5556 }
5557
5558 pub fn searchable(&self) -> bool {
5559 self.searchable
5560 }
5561
5562 fn open_excerpts(workspace: &mut Workspace, _: &OpenExcerpts, cx: &mut ViewContext<Workspace>) {
5563 let active_item = workspace.active_item(cx);
5564 let editor_handle = if let Some(editor) = active_item
5565 .as_ref()
5566 .and_then(|item| item.act_as::<Self>(cx))
5567 {
5568 editor
5569 } else {
5570 cx.propagate_action();
5571 return;
5572 };
5573
5574 let editor = editor_handle.read(cx);
5575 let buffer = editor.buffer.read(cx);
5576 if buffer.is_singleton() {
5577 cx.propagate_action();
5578 return;
5579 }
5580
5581 let mut new_selections_by_buffer = HashMap::default();
5582 for selection in editor.local_selections::<usize>(cx) {
5583 for (buffer, mut range) in
5584 buffer.range_to_buffer_ranges(selection.start..selection.end, cx)
5585 {
5586 if selection.reversed {
5587 mem::swap(&mut range.start, &mut range.end);
5588 }
5589 new_selections_by_buffer
5590 .entry(buffer)
5591 .or_insert(Vec::new())
5592 .push(range)
5593 }
5594 }
5595
5596 editor_handle.update(cx, |editor, cx| {
5597 editor.push_to_nav_history(editor.newest_anchor_selection().head(), None, cx);
5598 });
5599 let nav_history = workspace.active_pane().read(cx).nav_history().clone();
5600 nav_history.borrow_mut().disable();
5601
5602 // We defer the pane interaction because we ourselves are a workspace item
5603 // and activating a new item causes the pane to call a method on us reentrantly,
5604 // which panics if we're on the stack.
5605 cx.defer(move |workspace, cx| {
5606 workspace.activate_next_pane(cx);
5607
5608 for (buffer, ranges) in new_selections_by_buffer.into_iter() {
5609 let editor = workspace.open_project_item::<Self>(buffer, cx);
5610 editor.update(cx, |editor, cx| {
5611 editor.select_ranges(ranges, Some(Autoscroll::Newest), cx);
5612 });
5613 }
5614
5615 nav_history.borrow_mut().enable();
5616 });
5617 }
5618}
5619
5620impl EditorSnapshot {
5621 pub fn is_focused(&self) -> bool {
5622 self.is_focused
5623 }
5624
5625 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
5626 self.placeholder_text.as_ref()
5627 }
5628
5629 pub fn scroll_position(&self) -> Vector2F {
5630 compute_scroll_position(
5631 &self.display_snapshot,
5632 self.scroll_position,
5633 &self.scroll_top_anchor,
5634 )
5635 }
5636}
5637
5638impl Deref for EditorSnapshot {
5639 type Target = DisplaySnapshot;
5640
5641 fn deref(&self) -> &Self::Target {
5642 &self.display_snapshot
5643 }
5644}
5645
5646fn compute_scroll_position(
5647 snapshot: &DisplaySnapshot,
5648 mut scroll_position: Vector2F,
5649 scroll_top_anchor: &Anchor,
5650) -> Vector2F {
5651 if *scroll_top_anchor != Anchor::min() {
5652 let scroll_top = scroll_top_anchor.to_display_point(snapshot).row() as f32;
5653 scroll_position.set_y(scroll_top + scroll_position.y());
5654 } else {
5655 scroll_position.set_y(0.);
5656 }
5657 scroll_position
5658}
5659
5660#[derive(Copy, Clone)]
5661pub enum Event {
5662 Activate,
5663 BufferEdited,
5664 Edited,
5665 Blurred,
5666 Dirtied,
5667 Saved,
5668 TitleChanged,
5669 SelectionsChanged { local: bool },
5670 ScrollPositionChanged { local: bool },
5671 Closed,
5672}
5673
5674pub struct EditorFocused(pub ViewHandle<Editor>);
5675pub struct EditorBlurred(pub ViewHandle<Editor>);
5676pub struct EditorReleased(pub WeakViewHandle<Editor>);
5677
5678impl Entity for Editor {
5679 type Event = Event;
5680
5681 fn release(&mut self, cx: &mut MutableAppContext) {
5682 cx.emit_global(EditorReleased(self.handle.clone()));
5683 }
5684}
5685
5686impl View for Editor {
5687 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
5688 let style = self.style(cx);
5689 self.display_map.update(cx, |map, cx| {
5690 map.set_font(style.text.font_id, style.text.font_size, cx)
5691 });
5692 EditorElement::new(self.handle.clone(), style.clone(), self.cursor_shape).boxed()
5693 }
5694
5695 fn ui_name() -> &'static str {
5696 "Editor"
5697 }
5698
5699 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
5700 let focused_event = EditorFocused(cx.handle());
5701 cx.emit_global(focused_event);
5702 if let Some(rename) = self.pending_rename.as_ref() {
5703 cx.focus(&rename.editor);
5704 } else {
5705 self.focused = true;
5706 self.blink_cursors(self.blink_epoch, cx);
5707 self.buffer.update(cx, |buffer, cx| {
5708 buffer.finalize_last_transaction(cx);
5709 if self.leader_replica_id.is_none() {
5710 buffer.set_active_selections(&self.selections, cx);
5711 }
5712 });
5713 }
5714 }
5715
5716 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
5717 let blurred_event = EditorBlurred(cx.handle());
5718 cx.emit_global(blurred_event);
5719 self.focused = false;
5720 self.buffer
5721 .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
5722 self.hide_context_menu(cx);
5723 cx.emit(Event::Blurred);
5724 cx.notify();
5725 }
5726
5727 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
5728 let mut cx = Self::default_keymap_context();
5729 let mode = match self.mode {
5730 EditorMode::SingleLine => "single_line",
5731 EditorMode::AutoHeight { .. } => "auto_height",
5732 EditorMode::Full => "full",
5733 };
5734 cx.map.insert("mode".into(), mode.into());
5735 if self.pending_rename.is_some() {
5736 cx.set.insert("renaming".into());
5737 }
5738 match self.context_menu.as_ref() {
5739 Some(ContextMenu::Completions(_)) => {
5740 cx.set.insert("showing_completions".into());
5741 }
5742 Some(ContextMenu::CodeActions(_)) => {
5743 cx.set.insert("showing_code_actions".into());
5744 }
5745 None => {}
5746 }
5747 cx
5748 }
5749}
5750
5751fn build_style(
5752 settings: &Settings,
5753 get_field_editor_theme: Option<GetFieldEditorTheme>,
5754 override_text_style: Option<&OverrideTextStyle>,
5755 cx: &AppContext,
5756) -> EditorStyle {
5757 let font_cache = cx.font_cache();
5758
5759 let mut theme = settings.theme.editor.clone();
5760 let mut style = if let Some(get_field_editor_theme) = get_field_editor_theme {
5761 let field_editor_theme = get_field_editor_theme(&settings.theme);
5762 theme.text_color = field_editor_theme.text.color;
5763 theme.selection = field_editor_theme.selection;
5764 theme.background = field_editor_theme
5765 .container
5766 .background_color
5767 .unwrap_or_default();
5768 EditorStyle {
5769 text: field_editor_theme.text,
5770 placeholder_text: field_editor_theme.placeholder_text,
5771 theme,
5772 }
5773 } else {
5774 let font_family_id = settings.buffer_font_family;
5775 let font_family_name = cx.font_cache().family_name(font_family_id).unwrap();
5776 let font_properties = Default::default();
5777 let font_id = font_cache
5778 .select_font(font_family_id, &font_properties)
5779 .unwrap();
5780 let font_size = settings.buffer_font_size;
5781 EditorStyle {
5782 text: TextStyle {
5783 color: settings.theme.editor.text_color,
5784 font_family_name,
5785 font_family_id,
5786 font_id,
5787 font_size,
5788 font_properties,
5789 underline: Default::default(),
5790 },
5791 placeholder_text: None,
5792 theme,
5793 }
5794 };
5795
5796 if let Some(highlight_style) = override_text_style.and_then(|build_style| build_style(&style)) {
5797 if let Some(highlighted) = style
5798 .text
5799 .clone()
5800 .highlight(highlight_style, font_cache)
5801 .log_err()
5802 {
5803 style.text = highlighted;
5804 }
5805 }
5806
5807 style
5808}
5809
5810trait SelectionExt {
5811 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize>;
5812 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point>;
5813 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint>;
5814 fn spanned_rows(&self, include_end_if_at_line_start: bool, map: &DisplaySnapshot)
5815 -> Range<u32>;
5816}
5817
5818impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
5819 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
5820 let start = self.start.to_point(buffer);
5821 let end = self.end.to_point(buffer);
5822 if self.reversed {
5823 end..start
5824 } else {
5825 start..end
5826 }
5827 }
5828
5829 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
5830 let start = self.start.to_offset(buffer);
5831 let end = self.end.to_offset(buffer);
5832 if self.reversed {
5833 end..start
5834 } else {
5835 start..end
5836 }
5837 }
5838
5839 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
5840 let start = self
5841 .start
5842 .to_point(&map.buffer_snapshot)
5843 .to_display_point(map);
5844 let end = self
5845 .end
5846 .to_point(&map.buffer_snapshot)
5847 .to_display_point(map);
5848 if self.reversed {
5849 end..start
5850 } else {
5851 start..end
5852 }
5853 }
5854
5855 fn spanned_rows(
5856 &self,
5857 include_end_if_at_line_start: bool,
5858 map: &DisplaySnapshot,
5859 ) -> Range<u32> {
5860 let start = self.start.to_point(&map.buffer_snapshot);
5861 let mut end = self.end.to_point(&map.buffer_snapshot);
5862 if !include_end_if_at_line_start && start.row != end.row && end.column == 0 {
5863 end.row -= 1;
5864 }
5865
5866 let buffer_start = map.prev_line_boundary(start).0;
5867 let buffer_end = map.next_line_boundary(end).0;
5868 buffer_start.row..buffer_end.row + 1
5869 }
5870}
5871
5872impl<T: InvalidationRegion> InvalidationStack<T> {
5873 fn invalidate<S>(&mut self, selections: &[Selection<S>], buffer: &MultiBufferSnapshot)
5874 where
5875 S: Clone + ToOffset,
5876 {
5877 while let Some(region) = self.last() {
5878 let all_selections_inside_invalidation_ranges =
5879 if selections.len() == region.ranges().len() {
5880 selections
5881 .iter()
5882 .zip(region.ranges().iter().map(|r| r.to_offset(&buffer)))
5883 .all(|(selection, invalidation_range)| {
5884 let head = selection.head().to_offset(&buffer);
5885 invalidation_range.start <= head && invalidation_range.end >= head
5886 })
5887 } else {
5888 false
5889 };
5890
5891 if all_selections_inside_invalidation_ranges {
5892 break;
5893 } else {
5894 self.pop();
5895 }
5896 }
5897 }
5898}
5899
5900impl<T> Default for InvalidationStack<T> {
5901 fn default() -> Self {
5902 Self(Default::default())
5903 }
5904}
5905
5906impl<T> Deref for InvalidationStack<T> {
5907 type Target = Vec<T>;
5908
5909 fn deref(&self) -> &Self::Target {
5910 &self.0
5911 }
5912}
5913
5914impl<T> DerefMut for InvalidationStack<T> {
5915 fn deref_mut(&mut self) -> &mut Self::Target {
5916 &mut self.0
5917 }
5918}
5919
5920impl InvalidationRegion for BracketPairState {
5921 fn ranges(&self) -> &[Range<Anchor>] {
5922 &self.ranges
5923 }
5924}
5925
5926impl InvalidationRegion for SnippetState {
5927 fn ranges(&self) -> &[Range<Anchor>] {
5928 &self.ranges[self.active_index]
5929 }
5930}
5931
5932impl Deref for EditorStyle {
5933 type Target = theme::Editor;
5934
5935 fn deref(&self) -> &Self::Target {
5936 &self.theme
5937 }
5938}
5939
5940pub fn diagnostic_block_renderer(diagnostic: Diagnostic, is_valid: bool) -> RenderBlock {
5941 let mut highlighted_lines = Vec::new();
5942 for line in diagnostic.message.lines() {
5943 highlighted_lines.push(highlight_diagnostic_message(line));
5944 }
5945
5946 Arc::new(move |cx: &BlockContext| {
5947 let settings = cx.global::<Settings>();
5948 let theme = &settings.theme.editor;
5949 let style = diagnostic_style(diagnostic.severity, is_valid, theme);
5950 let font_size = (style.text_scale_factor * settings.buffer_font_size).round();
5951 Flex::column()
5952 .with_children(highlighted_lines.iter().map(|(line, highlights)| {
5953 Label::new(
5954 line.clone(),
5955 style.message.clone().with_font_size(font_size),
5956 )
5957 .with_highlights(highlights.clone())
5958 .contained()
5959 .with_margin_left(cx.anchor_x)
5960 .boxed()
5961 }))
5962 .aligned()
5963 .left()
5964 .boxed()
5965 })
5966}
5967
5968pub fn highlight_diagnostic_message(message: &str) -> (String, Vec<usize>) {
5969 let mut message_without_backticks = String::new();
5970 let mut prev_offset = 0;
5971 let mut inside_block = false;
5972 let mut highlights = Vec::new();
5973 for (match_ix, (offset, _)) in message
5974 .match_indices('`')
5975 .chain([(message.len(), "")])
5976 .enumerate()
5977 {
5978 message_without_backticks.push_str(&message[prev_offset..offset]);
5979 if inside_block {
5980 highlights.extend(prev_offset - match_ix..offset - match_ix);
5981 }
5982
5983 inside_block = !inside_block;
5984 prev_offset = offset + 1;
5985 }
5986
5987 (message_without_backticks, highlights)
5988}
5989
5990pub fn diagnostic_style(
5991 severity: DiagnosticSeverity,
5992 valid: bool,
5993 theme: &theme::Editor,
5994) -> DiagnosticStyle {
5995 match (severity, valid) {
5996 (DiagnosticSeverity::ERROR, true) => theme.error_diagnostic.clone(),
5997 (DiagnosticSeverity::ERROR, false) => theme.invalid_error_diagnostic.clone(),
5998 (DiagnosticSeverity::WARNING, true) => theme.warning_diagnostic.clone(),
5999 (DiagnosticSeverity::WARNING, false) => theme.invalid_warning_diagnostic.clone(),
6000 (DiagnosticSeverity::INFORMATION, true) => theme.information_diagnostic.clone(),
6001 (DiagnosticSeverity::INFORMATION, false) => theme.invalid_information_diagnostic.clone(),
6002 (DiagnosticSeverity::HINT, true) => theme.hint_diagnostic.clone(),
6003 (DiagnosticSeverity::HINT, false) => theme.invalid_hint_diagnostic.clone(),
6004 _ => theme.invalid_hint_diagnostic.clone(),
6005 }
6006}
6007
6008pub fn combine_syntax_and_fuzzy_match_highlights(
6009 text: &str,
6010 default_style: HighlightStyle,
6011 syntax_ranges: impl Iterator<Item = (Range<usize>, HighlightStyle)>,
6012 match_indices: &[usize],
6013) -> Vec<(Range<usize>, HighlightStyle)> {
6014 let mut result = Vec::new();
6015 let mut match_indices = match_indices.iter().copied().peekable();
6016
6017 for (range, mut syntax_highlight) in syntax_ranges.chain([(usize::MAX..0, Default::default())])
6018 {
6019 syntax_highlight.weight = None;
6020
6021 // Add highlights for any fuzzy match characters before the next
6022 // syntax highlight range.
6023 while let Some(&match_index) = match_indices.peek() {
6024 if match_index >= range.start {
6025 break;
6026 }
6027 match_indices.next();
6028 let end_index = char_ix_after(match_index, text);
6029 let mut match_style = default_style;
6030 match_style.weight = Some(fonts::Weight::BOLD);
6031 result.push((match_index..end_index, match_style));
6032 }
6033
6034 if range.start == usize::MAX {
6035 break;
6036 }
6037
6038 // Add highlights for any fuzzy match characters within the
6039 // syntax highlight range.
6040 let mut offset = range.start;
6041 while let Some(&match_index) = match_indices.peek() {
6042 if match_index >= range.end {
6043 break;
6044 }
6045
6046 match_indices.next();
6047 if match_index > offset {
6048 result.push((offset..match_index, syntax_highlight));
6049 }
6050
6051 let mut end_index = char_ix_after(match_index, text);
6052 while let Some(&next_match_index) = match_indices.peek() {
6053 if next_match_index == end_index && next_match_index < range.end {
6054 end_index = char_ix_after(next_match_index, text);
6055 match_indices.next();
6056 } else {
6057 break;
6058 }
6059 }
6060
6061 let mut match_style = syntax_highlight;
6062 match_style.weight = Some(fonts::Weight::BOLD);
6063 result.push((match_index..end_index, match_style));
6064 offset = end_index;
6065 }
6066
6067 if offset < range.end {
6068 result.push((offset..range.end, syntax_highlight));
6069 }
6070 }
6071
6072 fn char_ix_after(ix: usize, text: &str) -> usize {
6073 ix + text[ix..].chars().next().unwrap().len_utf8()
6074 }
6075
6076 result
6077}
6078
6079pub fn styled_runs_for_code_label<'a>(
6080 label: &'a CodeLabel,
6081 syntax_theme: &'a theme::SyntaxTheme,
6082) -> impl 'a + Iterator<Item = (Range<usize>, HighlightStyle)> {
6083 let fade_out = HighlightStyle {
6084 fade_out: Some(0.35),
6085 ..Default::default()
6086 };
6087
6088 let mut prev_end = label.filter_range.end;
6089 label
6090 .runs
6091 .iter()
6092 .enumerate()
6093 .flat_map(move |(ix, (range, highlight_id))| {
6094 let style = if let Some(style) = highlight_id.style(syntax_theme) {
6095 style
6096 } else {
6097 return Default::default();
6098 };
6099 let mut muted_style = style.clone();
6100 muted_style.highlight(fade_out);
6101
6102 let mut runs = SmallVec::<[(Range<usize>, HighlightStyle); 3]>::new();
6103 if range.start >= label.filter_range.end {
6104 if range.start > prev_end {
6105 runs.push((prev_end..range.start, fade_out));
6106 }
6107 runs.push((range.clone(), muted_style));
6108 } else if range.end <= label.filter_range.end {
6109 runs.push((range.clone(), style));
6110 } else {
6111 runs.push((range.start..label.filter_range.end, style));
6112 runs.push((label.filter_range.end..range.end, muted_style));
6113 }
6114 prev_end = cmp::max(prev_end, range.end);
6115
6116 if ix + 1 == label.runs.len() && label.text.len() > prev_end {
6117 runs.push((prev_end..label.text.len(), fade_out));
6118 }
6119
6120 runs
6121 })
6122}
6123
6124#[cfg(test)]
6125mod tests {
6126 use crate::test::marked_text_by;
6127
6128 use super::*;
6129 use gpui::{
6130 geometry::rect::RectF,
6131 platform::{WindowBounds, WindowOptions},
6132 };
6133 use language::{LanguageConfig, LanguageServerConfig};
6134 use lsp::FakeLanguageServer;
6135 use project::FakeFs;
6136 use smol::stream::StreamExt;
6137 use std::{cell::RefCell, rc::Rc, time::Instant};
6138 use text::Point;
6139 use unindent::Unindent;
6140 use util::test::sample_text;
6141 use workspace::FollowableItem;
6142
6143 #[gpui::test]
6144 fn test_undo_redo_with_selection_restoration(cx: &mut MutableAppContext) {
6145 populate_settings(cx);
6146 let mut now = Instant::now();
6147 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
6148 let group_interval = buffer.read(cx).transaction_group_interval();
6149 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6150 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6151
6152 editor.update(cx, |editor, cx| {
6153 editor.start_transaction_at(now, cx);
6154 editor.select_ranges([2..4], None, cx);
6155 editor.insert("cd", cx);
6156 editor.end_transaction_at(now, cx);
6157 assert_eq!(editor.text(cx), "12cd56");
6158 assert_eq!(editor.selected_ranges(cx), vec![4..4]);
6159
6160 editor.start_transaction_at(now, cx);
6161 editor.select_ranges([4..5], None, cx);
6162 editor.insert("e", cx);
6163 editor.end_transaction_at(now, cx);
6164 assert_eq!(editor.text(cx), "12cde6");
6165 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
6166
6167 now += group_interval + Duration::from_millis(1);
6168 editor.select_ranges([2..2], None, cx);
6169
6170 // Simulate an edit in another editor
6171 buffer.update(cx, |buffer, cx| {
6172 buffer.start_transaction_at(now, cx);
6173 buffer.edit([0..1], "a", cx);
6174 buffer.edit([1..1], "b", cx);
6175 buffer.end_transaction_at(now, cx);
6176 });
6177
6178 assert_eq!(editor.text(cx), "ab2cde6");
6179 assert_eq!(editor.selected_ranges(cx), vec![3..3]);
6180
6181 // Last transaction happened past the group interval in a different editor.
6182 // Undo it individually and don't restore selections.
6183 editor.undo(&Undo, cx);
6184 assert_eq!(editor.text(cx), "12cde6");
6185 assert_eq!(editor.selected_ranges(cx), vec![2..2]);
6186
6187 // First two transactions happened within the group interval in this editor.
6188 // Undo them together and restore selections.
6189 editor.undo(&Undo, cx);
6190 editor.undo(&Undo, cx); // Undo stack is empty here, so this is a no-op.
6191 assert_eq!(editor.text(cx), "123456");
6192 assert_eq!(editor.selected_ranges(cx), vec![0..0]);
6193
6194 // Redo the first two transactions together.
6195 editor.redo(&Redo, cx);
6196 assert_eq!(editor.text(cx), "12cde6");
6197 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
6198
6199 // Redo the last transaction on its own.
6200 editor.redo(&Redo, cx);
6201 assert_eq!(editor.text(cx), "ab2cde6");
6202 assert_eq!(editor.selected_ranges(cx), vec![6..6]);
6203
6204 // Test empty transactions.
6205 editor.start_transaction_at(now, cx);
6206 editor.end_transaction_at(now, cx);
6207 editor.undo(&Undo, cx);
6208 assert_eq!(editor.text(cx), "12cde6");
6209 });
6210 }
6211
6212 #[gpui::test]
6213 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
6214 populate_settings(cx);
6215
6216 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\nddddddd\n", cx);
6217 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6218 editor.update(cx, |view, cx| {
6219 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
6220 });
6221 assert_eq!(
6222 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6223 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
6224 );
6225
6226 editor.update(cx, |view, cx| {
6227 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6228 });
6229
6230 assert_eq!(
6231 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6232 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6233 );
6234
6235 editor.update(cx, |view, cx| {
6236 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6237 });
6238
6239 assert_eq!(
6240 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6241 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
6242 );
6243
6244 editor.update(cx, |view, cx| {
6245 view.end_selection(cx);
6246 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6247 });
6248
6249 assert_eq!(
6250 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6251 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
6252 );
6253
6254 editor.update(cx, |view, cx| {
6255 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
6256 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
6257 });
6258
6259 assert_eq!(
6260 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6261 [
6262 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
6263 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
6264 ]
6265 );
6266
6267 editor.update(cx, |view, cx| {
6268 view.end_selection(cx);
6269 });
6270
6271 assert_eq!(
6272 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6273 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
6274 );
6275 }
6276
6277 #[gpui::test]
6278 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
6279 populate_settings(cx);
6280 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6281 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6282
6283 view.update(cx, |view, cx| {
6284 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
6285 assert_eq!(
6286 view.selected_display_ranges(cx),
6287 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
6288 );
6289 });
6290
6291 view.update(cx, |view, cx| {
6292 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6293 assert_eq!(
6294 view.selected_display_ranges(cx),
6295 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6296 );
6297 });
6298
6299 view.update(cx, |view, cx| {
6300 view.cancel(&Cancel, cx);
6301 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6302 assert_eq!(
6303 view.selected_display_ranges(cx),
6304 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6305 );
6306 });
6307 }
6308
6309 #[gpui::test]
6310 fn test_navigation_history(cx: &mut gpui::MutableAppContext) {
6311 populate_settings(cx);
6312 use workspace::Item;
6313 let nav_history = Rc::new(RefCell::new(workspace::NavHistory::default()));
6314 let buffer = MultiBuffer::build_simple(&sample_text(30, 5, 'a'), cx);
6315
6316 cx.add_window(Default::default(), |cx| {
6317 let mut editor = build_editor(buffer.clone(), cx);
6318 editor.nav_history = Some(ItemNavHistory::new(nav_history.clone(), &cx.handle()));
6319
6320 // Move the cursor a small distance.
6321 // Nothing is added to the navigation history.
6322 editor.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
6323 editor.select_display_ranges(&[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)], cx);
6324 assert!(nav_history.borrow_mut().pop_backward().is_none());
6325
6326 // Move the cursor a large distance.
6327 // The history can jump back to the previous position.
6328 editor.select_display_ranges(&[DisplayPoint::new(13, 0)..DisplayPoint::new(13, 3)], cx);
6329 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
6330 editor.navigate(nav_entry.data.unwrap(), cx);
6331 assert_eq!(nav_entry.item.id(), cx.view_id());
6332 assert_eq!(
6333 editor.selected_display_ranges(cx),
6334 &[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)]
6335 );
6336 assert!(nav_history.borrow_mut().pop_backward().is_none());
6337
6338 // Move the cursor a small distance via the mouse.
6339 // Nothing is added to the navigation history.
6340 editor.begin_selection(DisplayPoint::new(5, 0), false, 1, cx);
6341 editor.end_selection(cx);
6342 assert_eq!(
6343 editor.selected_display_ranges(cx),
6344 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
6345 );
6346 assert!(nav_history.borrow_mut().pop_backward().is_none());
6347
6348 // Move the cursor a large distance via the mouse.
6349 // The history can jump back to the previous position.
6350 editor.begin_selection(DisplayPoint::new(15, 0), false, 1, cx);
6351 editor.end_selection(cx);
6352 assert_eq!(
6353 editor.selected_display_ranges(cx),
6354 &[DisplayPoint::new(15, 0)..DisplayPoint::new(15, 0)]
6355 );
6356 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
6357 editor.navigate(nav_entry.data.unwrap(), cx);
6358 assert_eq!(nav_entry.item.id(), cx.view_id());
6359 assert_eq!(
6360 editor.selected_display_ranges(cx),
6361 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
6362 );
6363 assert!(nav_history.borrow_mut().pop_backward().is_none());
6364
6365 editor
6366 });
6367 }
6368
6369 #[gpui::test]
6370 fn test_cancel(cx: &mut gpui::MutableAppContext) {
6371 populate_settings(cx);
6372 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6373 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6374
6375 view.update(cx, |view, cx| {
6376 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
6377 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6378 view.end_selection(cx);
6379
6380 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
6381 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
6382 view.end_selection(cx);
6383 assert_eq!(
6384 view.selected_display_ranges(cx),
6385 [
6386 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
6387 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
6388 ]
6389 );
6390 });
6391
6392 view.update(cx, |view, cx| {
6393 view.cancel(&Cancel, cx);
6394 assert_eq!(
6395 view.selected_display_ranges(cx),
6396 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
6397 );
6398 });
6399
6400 view.update(cx, |view, cx| {
6401 view.cancel(&Cancel, cx);
6402 assert_eq!(
6403 view.selected_display_ranges(cx),
6404 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
6405 );
6406 });
6407 }
6408
6409 #[gpui::test]
6410 fn test_fold(cx: &mut gpui::MutableAppContext) {
6411 populate_settings(cx);
6412 let buffer = MultiBuffer::build_simple(
6413 &"
6414 impl Foo {
6415 // Hello!
6416
6417 fn a() {
6418 1
6419 }
6420
6421 fn b() {
6422 2
6423 }
6424
6425 fn c() {
6426 3
6427 }
6428 }
6429 "
6430 .unindent(),
6431 cx,
6432 );
6433 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6434
6435 view.update(cx, |view, cx| {
6436 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx);
6437 view.fold(&Fold, cx);
6438 assert_eq!(
6439 view.display_text(cx),
6440 "
6441 impl Foo {
6442 // Hello!
6443
6444 fn a() {
6445 1
6446 }
6447
6448 fn b() {…
6449 }
6450
6451 fn c() {…
6452 }
6453 }
6454 "
6455 .unindent(),
6456 );
6457
6458 view.fold(&Fold, cx);
6459 assert_eq!(
6460 view.display_text(cx),
6461 "
6462 impl Foo {…
6463 }
6464 "
6465 .unindent(),
6466 );
6467
6468 view.unfold(&Unfold, cx);
6469 assert_eq!(
6470 view.display_text(cx),
6471 "
6472 impl Foo {
6473 // Hello!
6474
6475 fn a() {
6476 1
6477 }
6478
6479 fn b() {…
6480 }
6481
6482 fn c() {…
6483 }
6484 }
6485 "
6486 .unindent(),
6487 );
6488
6489 view.unfold(&Unfold, cx);
6490 assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text());
6491 });
6492 }
6493
6494 #[gpui::test]
6495 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
6496 populate_settings(cx);
6497 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
6498 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6499
6500 buffer.update(cx, |buffer, cx| {
6501 buffer.edit(
6502 vec![
6503 Point::new(1, 0)..Point::new(1, 0),
6504 Point::new(1, 1)..Point::new(1, 1),
6505 ],
6506 "\t",
6507 cx,
6508 );
6509 });
6510
6511 view.update(cx, |view, cx| {
6512 assert_eq!(
6513 view.selected_display_ranges(cx),
6514 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6515 );
6516
6517 view.move_down(&MoveDown, cx);
6518 assert_eq!(
6519 view.selected_display_ranges(cx),
6520 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6521 );
6522
6523 view.move_right(&MoveRight, cx);
6524 assert_eq!(
6525 view.selected_display_ranges(cx),
6526 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
6527 );
6528
6529 view.move_left(&MoveLeft, cx);
6530 assert_eq!(
6531 view.selected_display_ranges(cx),
6532 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6533 );
6534
6535 view.move_up(&MoveUp, cx);
6536 assert_eq!(
6537 view.selected_display_ranges(cx),
6538 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6539 );
6540
6541 view.move_to_end(&MoveToEnd, cx);
6542 assert_eq!(
6543 view.selected_display_ranges(cx),
6544 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
6545 );
6546
6547 view.move_to_beginning(&MoveToBeginning, cx);
6548 assert_eq!(
6549 view.selected_display_ranges(cx),
6550 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6551 );
6552
6553 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx);
6554 view.select_to_beginning(&SelectToBeginning, cx);
6555 assert_eq!(
6556 view.selected_display_ranges(cx),
6557 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
6558 );
6559
6560 view.select_to_end(&SelectToEnd, cx);
6561 assert_eq!(
6562 view.selected_display_ranges(cx),
6563 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
6564 );
6565 });
6566 }
6567
6568 #[gpui::test]
6569 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
6570 populate_settings(cx);
6571 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
6572 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6573
6574 assert_eq!('ⓐ'.len_utf8(), 3);
6575 assert_eq!('α'.len_utf8(), 2);
6576
6577 view.update(cx, |view, cx| {
6578 view.fold_ranges(
6579 vec![
6580 Point::new(0, 6)..Point::new(0, 12),
6581 Point::new(1, 2)..Point::new(1, 4),
6582 Point::new(2, 4)..Point::new(2, 8),
6583 ],
6584 cx,
6585 );
6586 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
6587
6588 view.move_right(&MoveRight, cx);
6589 assert_eq!(
6590 view.selected_display_ranges(cx),
6591 &[empty_range(0, "ⓐ".len())]
6592 );
6593 view.move_right(&MoveRight, cx);
6594 assert_eq!(
6595 view.selected_display_ranges(cx),
6596 &[empty_range(0, "ⓐⓑ".len())]
6597 );
6598 view.move_right(&MoveRight, cx);
6599 assert_eq!(
6600 view.selected_display_ranges(cx),
6601 &[empty_range(0, "ⓐⓑ…".len())]
6602 );
6603
6604 view.move_down(&MoveDown, cx);
6605 assert_eq!(
6606 view.selected_display_ranges(cx),
6607 &[empty_range(1, "ab…".len())]
6608 );
6609 view.move_left(&MoveLeft, cx);
6610 assert_eq!(
6611 view.selected_display_ranges(cx),
6612 &[empty_range(1, "ab".len())]
6613 );
6614 view.move_left(&MoveLeft, cx);
6615 assert_eq!(
6616 view.selected_display_ranges(cx),
6617 &[empty_range(1, "a".len())]
6618 );
6619
6620 view.move_down(&MoveDown, cx);
6621 assert_eq!(
6622 view.selected_display_ranges(cx),
6623 &[empty_range(2, "α".len())]
6624 );
6625 view.move_right(&MoveRight, cx);
6626 assert_eq!(
6627 view.selected_display_ranges(cx),
6628 &[empty_range(2, "αβ".len())]
6629 );
6630 view.move_right(&MoveRight, cx);
6631 assert_eq!(
6632 view.selected_display_ranges(cx),
6633 &[empty_range(2, "αβ…".len())]
6634 );
6635 view.move_right(&MoveRight, cx);
6636 assert_eq!(
6637 view.selected_display_ranges(cx),
6638 &[empty_range(2, "αβ…ε".len())]
6639 );
6640
6641 view.move_up(&MoveUp, cx);
6642 assert_eq!(
6643 view.selected_display_ranges(cx),
6644 &[empty_range(1, "ab…e".len())]
6645 );
6646 view.move_up(&MoveUp, cx);
6647 assert_eq!(
6648 view.selected_display_ranges(cx),
6649 &[empty_range(0, "ⓐⓑ…ⓔ".len())]
6650 );
6651 view.move_left(&MoveLeft, cx);
6652 assert_eq!(
6653 view.selected_display_ranges(cx),
6654 &[empty_range(0, "ⓐⓑ…".len())]
6655 );
6656 view.move_left(&MoveLeft, cx);
6657 assert_eq!(
6658 view.selected_display_ranges(cx),
6659 &[empty_range(0, "ⓐⓑ".len())]
6660 );
6661 view.move_left(&MoveLeft, cx);
6662 assert_eq!(
6663 view.selected_display_ranges(cx),
6664 &[empty_range(0, "ⓐ".len())]
6665 );
6666 });
6667 }
6668
6669 #[gpui::test]
6670 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
6671 populate_settings(cx);
6672 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
6673 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6674 view.update(cx, |view, cx| {
6675 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx);
6676 view.move_down(&MoveDown, cx);
6677 assert_eq!(
6678 view.selected_display_ranges(cx),
6679 &[empty_range(1, "abcd".len())]
6680 );
6681
6682 view.move_down(&MoveDown, cx);
6683 assert_eq!(
6684 view.selected_display_ranges(cx),
6685 &[empty_range(2, "αβγ".len())]
6686 );
6687
6688 view.move_down(&MoveDown, cx);
6689 assert_eq!(
6690 view.selected_display_ranges(cx),
6691 &[empty_range(3, "abcd".len())]
6692 );
6693
6694 view.move_down(&MoveDown, cx);
6695 assert_eq!(
6696 view.selected_display_ranges(cx),
6697 &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
6698 );
6699
6700 view.move_up(&MoveUp, cx);
6701 assert_eq!(
6702 view.selected_display_ranges(cx),
6703 &[empty_range(3, "abcd".len())]
6704 );
6705
6706 view.move_up(&MoveUp, cx);
6707 assert_eq!(
6708 view.selected_display_ranges(cx),
6709 &[empty_range(2, "αβγ".len())]
6710 );
6711 });
6712 }
6713
6714 #[gpui::test]
6715 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
6716 populate_settings(cx);
6717 let buffer = MultiBuffer::build_simple("abc\n def", cx);
6718 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6719 view.update(cx, |view, cx| {
6720 view.select_display_ranges(
6721 &[
6722 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6723 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
6724 ],
6725 cx,
6726 );
6727 });
6728
6729 view.update(cx, |view, cx| {
6730 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6731 assert_eq!(
6732 view.selected_display_ranges(cx),
6733 &[
6734 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6735 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6736 ]
6737 );
6738 });
6739
6740 view.update(cx, |view, cx| {
6741 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6742 assert_eq!(
6743 view.selected_display_ranges(cx),
6744 &[
6745 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6746 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6747 ]
6748 );
6749 });
6750
6751 view.update(cx, |view, cx| {
6752 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6753 assert_eq!(
6754 view.selected_display_ranges(cx),
6755 &[
6756 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6757 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6758 ]
6759 );
6760 });
6761
6762 view.update(cx, |view, cx| {
6763 view.move_to_end_of_line(&MoveToEndOfLine, cx);
6764 assert_eq!(
6765 view.selected_display_ranges(cx),
6766 &[
6767 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6768 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6769 ]
6770 );
6771 });
6772
6773 // Moving to the end of line again is a no-op.
6774 view.update(cx, |view, cx| {
6775 view.move_to_end_of_line(&MoveToEndOfLine, cx);
6776 assert_eq!(
6777 view.selected_display_ranges(cx),
6778 &[
6779 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6780 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6781 ]
6782 );
6783 });
6784
6785 view.update(cx, |view, cx| {
6786 view.move_left(&MoveLeft, cx);
6787 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6788 assert_eq!(
6789 view.selected_display_ranges(cx),
6790 &[
6791 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6792 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
6793 ]
6794 );
6795 });
6796
6797 view.update(cx, |view, cx| {
6798 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6799 assert_eq!(
6800 view.selected_display_ranges(cx),
6801 &[
6802 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6803 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
6804 ]
6805 );
6806 });
6807
6808 view.update(cx, |view, cx| {
6809 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6810 assert_eq!(
6811 view.selected_display_ranges(cx),
6812 &[
6813 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6814 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
6815 ]
6816 );
6817 });
6818
6819 view.update(cx, |view, cx| {
6820 view.select_to_end_of_line(&SelectToEndOfLine(true), cx);
6821 assert_eq!(
6822 view.selected_display_ranges(cx),
6823 &[
6824 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
6825 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
6826 ]
6827 );
6828 });
6829
6830 view.update(cx, |view, cx| {
6831 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
6832 assert_eq!(view.display_text(cx), "ab\n de");
6833 assert_eq!(
6834 view.selected_display_ranges(cx),
6835 &[
6836 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6837 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
6838 ]
6839 );
6840 });
6841
6842 view.update(cx, |view, cx| {
6843 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
6844 assert_eq!(view.display_text(cx), "\n");
6845 assert_eq!(
6846 view.selected_display_ranges(cx),
6847 &[
6848 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6849 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6850 ]
6851 );
6852 });
6853 }
6854
6855 #[gpui::test]
6856 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
6857 populate_settings(cx);
6858 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
6859 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6860 view.update(cx, |view, cx| {
6861 view.select_display_ranges(
6862 &[
6863 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
6864 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
6865 ],
6866 cx,
6867 );
6868
6869 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
6870 assert_selection_ranges(
6871 "use std::<>str::{foo, bar}\n\n {[]baz.qux()}",
6872 vec![('<', '>'), ('[', ']')],
6873 view,
6874 cx,
6875 );
6876
6877 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
6878 assert_selection_ranges(
6879 "use std<>::str::{foo, bar}\n\n []{baz.qux()}",
6880 vec![('<', '>'), ('[', ']')],
6881 view,
6882 cx,
6883 );
6884
6885 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
6886 assert_selection_ranges(
6887 "use <>std::str::{foo, bar}\n\n[] {baz.qux()}",
6888 vec![('<', '>'), ('[', ']')],
6889 view,
6890 cx,
6891 );
6892
6893 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
6894 assert_selection_ranges(
6895 "<>use std::str::{foo, bar}\n[]\n {baz.qux()}",
6896 vec![('<', '>'), ('[', ']')],
6897 view,
6898 cx,
6899 );
6900
6901 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
6902 assert_selection_ranges(
6903 "<>use std::str::{foo, bar[]}\n\n {baz.qux()}",
6904 vec![('<', '>'), ('[', ']')],
6905 view,
6906 cx,
6907 );
6908
6909 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
6910 assert_selection_ranges(
6911 "use<> std::str::{foo, bar}[]\n\n {baz.qux()}",
6912 vec![('<', '>'), ('[', ']')],
6913 view,
6914 cx,
6915 );
6916
6917 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
6918 assert_selection_ranges(
6919 "use std<>::str::{foo, bar}\n[]\n {baz.qux()}",
6920 vec![('<', '>'), ('[', ']')],
6921 view,
6922 cx,
6923 );
6924
6925 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
6926 assert_selection_ranges(
6927 "use std::<>str::{foo, bar}\n\n {[]baz.qux()}",
6928 vec![('<', '>'), ('[', ']')],
6929 view,
6930 cx,
6931 );
6932
6933 view.move_right(&MoveRight, cx);
6934 view.select_to_previous_word_start(&SelectToPreviousWordBoundary, cx);
6935 assert_selection_ranges(
6936 "use std::>s<tr::{foo, bar}\n\n {]b[az.qux()}",
6937 vec![('<', '>'), ('[', ']')],
6938 view,
6939 cx,
6940 );
6941
6942 view.select_to_previous_word_start(&SelectToPreviousWordBoundary, cx);
6943 assert_selection_ranges(
6944 "use std>::s<tr::{foo, bar}\n\n ]{b[az.qux()}",
6945 vec![('<', '>'), ('[', ']')],
6946 view,
6947 cx,
6948 );
6949
6950 view.select_to_next_word_end(&SelectToNextWordBoundary, cx);
6951 assert_selection_ranges(
6952 "use std::>s<tr::{foo, bar}\n\n {]b[az.qux()}",
6953 vec![('<', '>'), ('[', ']')],
6954 view,
6955 cx,
6956 );
6957 });
6958 }
6959
6960 #[gpui::test]
6961 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
6962 populate_settings(cx);
6963 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
6964 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6965
6966 view.update(cx, |view, cx| {
6967 view.set_wrap_width(Some(140.), cx);
6968 assert_eq!(
6969 view.display_text(cx),
6970 "use one::{\n two::three::\n four::five\n};"
6971 );
6972
6973 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx);
6974
6975 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
6976 assert_eq!(
6977 view.selected_display_ranges(cx),
6978 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
6979 );
6980
6981 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
6982 assert_eq!(
6983 view.selected_display_ranges(cx),
6984 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
6985 );
6986
6987 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
6988 assert_eq!(
6989 view.selected_display_ranges(cx),
6990 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
6991 );
6992
6993 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
6994 assert_eq!(
6995 view.selected_display_ranges(cx),
6996 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
6997 );
6998
6999 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
7000 assert_eq!(
7001 view.selected_display_ranges(cx),
7002 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
7003 );
7004
7005 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
7006 assert_eq!(
7007 view.selected_display_ranges(cx),
7008 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
7009 );
7010 });
7011 }
7012
7013 #[gpui::test]
7014 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
7015 populate_settings(cx);
7016 let buffer = MultiBuffer::build_simple("one two three four", cx);
7017 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7018
7019 view.update(cx, |view, cx| {
7020 view.select_display_ranges(
7021 &[
7022 // an empty selection - the preceding word fragment is deleted
7023 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7024 // characters selected - they are deleted
7025 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
7026 ],
7027 cx,
7028 );
7029 view.delete_to_previous_word_start(&DeleteToPreviousWordBoundary, cx);
7030 });
7031
7032 assert_eq!(buffer.read(cx).read(cx).text(), "e two te four");
7033
7034 view.update(cx, |view, cx| {
7035 view.select_display_ranges(
7036 &[
7037 // an empty selection - the following word fragment is deleted
7038 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7039 // characters selected - they are deleted
7040 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
7041 ],
7042 cx,
7043 );
7044 view.delete_to_next_word_end(&DeleteToNextWordBoundary, cx);
7045 });
7046
7047 assert_eq!(buffer.read(cx).read(cx).text(), "e t te our");
7048 }
7049
7050 #[gpui::test]
7051 fn test_newline(cx: &mut gpui::MutableAppContext) {
7052 populate_settings(cx);
7053 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
7054 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7055
7056 view.update(cx, |view, cx| {
7057 view.select_display_ranges(
7058 &[
7059 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7060 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7061 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
7062 ],
7063 cx,
7064 );
7065
7066 view.newline(&Newline, cx);
7067 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
7068 });
7069 }
7070
7071 #[gpui::test]
7072 fn test_newline_with_old_selections(cx: &mut gpui::MutableAppContext) {
7073 populate_settings(cx);
7074 let buffer = MultiBuffer::build_simple(
7075 "
7076 a
7077 b(
7078 X
7079 )
7080 c(
7081 X
7082 )
7083 "
7084 .unindent()
7085 .as_str(),
7086 cx,
7087 );
7088
7089 let (_, editor) = cx.add_window(Default::default(), |cx| {
7090 let mut editor = build_editor(buffer.clone(), cx);
7091 editor.select_ranges(
7092 [
7093 Point::new(2, 4)..Point::new(2, 5),
7094 Point::new(5, 4)..Point::new(5, 5),
7095 ],
7096 None,
7097 cx,
7098 );
7099 editor
7100 });
7101
7102 // Edit the buffer directly, deleting ranges surrounding the editor's selections
7103 buffer.update(cx, |buffer, cx| {
7104 buffer.edit(
7105 [
7106 Point::new(1, 2)..Point::new(3, 0),
7107 Point::new(4, 2)..Point::new(6, 0),
7108 ],
7109 "",
7110 cx,
7111 );
7112 assert_eq!(
7113 buffer.read(cx).text(),
7114 "
7115 a
7116 b()
7117 c()
7118 "
7119 .unindent()
7120 );
7121 });
7122
7123 editor.update(cx, |editor, cx| {
7124 assert_eq!(
7125 editor.selected_ranges(cx),
7126 &[
7127 Point::new(1, 2)..Point::new(1, 2),
7128 Point::new(2, 2)..Point::new(2, 2),
7129 ],
7130 );
7131
7132 editor.newline(&Newline, cx);
7133 assert_eq!(
7134 editor.text(cx),
7135 "
7136 a
7137 b(
7138 )
7139 c(
7140 )
7141 "
7142 .unindent()
7143 );
7144
7145 // The selections are moved after the inserted newlines
7146 assert_eq!(
7147 editor.selected_ranges(cx),
7148 &[
7149 Point::new(2, 0)..Point::new(2, 0),
7150 Point::new(4, 0)..Point::new(4, 0),
7151 ],
7152 );
7153 });
7154 }
7155
7156 #[gpui::test]
7157 fn test_insert_with_old_selections(cx: &mut gpui::MutableAppContext) {
7158 populate_settings(cx);
7159 let buffer = MultiBuffer::build_simple("a( X ), b( Y ), c( Z )", cx);
7160 let (_, editor) = cx.add_window(Default::default(), |cx| {
7161 let mut editor = build_editor(buffer.clone(), cx);
7162 editor.select_ranges([3..4, 11..12, 19..20], None, cx);
7163 editor
7164 });
7165
7166 // Edit the buffer directly, deleting ranges surrounding the editor's selections
7167 buffer.update(cx, |buffer, cx| {
7168 buffer.edit([2..5, 10..13, 18..21], "", cx);
7169 assert_eq!(buffer.read(cx).text(), "a(), b(), c()".unindent());
7170 });
7171
7172 editor.update(cx, |editor, cx| {
7173 assert_eq!(editor.selected_ranges(cx), &[2..2, 7..7, 12..12],);
7174
7175 editor.insert("Z", cx);
7176 assert_eq!(editor.text(cx), "a(Z), b(Z), c(Z)");
7177
7178 // The selections are moved after the inserted characters
7179 assert_eq!(editor.selected_ranges(cx), &[3..3, 9..9, 15..15],);
7180 });
7181 }
7182
7183 #[gpui::test]
7184 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
7185 populate_settings(cx);
7186 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
7187 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7188
7189 view.update(cx, |view, cx| {
7190 // two selections on the same line
7191 view.select_display_ranges(
7192 &[
7193 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
7194 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
7195 ],
7196 cx,
7197 );
7198
7199 // indent from mid-tabstop to full tabstop
7200 view.tab(&Tab, cx);
7201 assert_eq!(view.text(cx), " one two\nthree\n four");
7202 assert_eq!(
7203 view.selected_display_ranges(cx),
7204 &[
7205 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
7206 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
7207 ]
7208 );
7209
7210 // outdent from 1 tabstop to 0 tabstops
7211 view.outdent(&Outdent, cx);
7212 assert_eq!(view.text(cx), "one two\nthree\n four");
7213 assert_eq!(
7214 view.selected_display_ranges(cx),
7215 &[
7216 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
7217 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
7218 ]
7219 );
7220
7221 // select across line ending
7222 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx);
7223
7224 // indent and outdent affect only the preceding line
7225 view.tab(&Tab, cx);
7226 assert_eq!(view.text(cx), "one two\n three\n four");
7227 assert_eq!(
7228 view.selected_display_ranges(cx),
7229 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
7230 );
7231 view.outdent(&Outdent, cx);
7232 assert_eq!(view.text(cx), "one two\nthree\n four");
7233 assert_eq!(
7234 view.selected_display_ranges(cx),
7235 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
7236 );
7237
7238 // Ensure that indenting/outdenting works when the cursor is at column 0.
7239 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
7240 view.tab(&Tab, cx);
7241 assert_eq!(view.text(cx), "one two\n three\n four");
7242 assert_eq!(
7243 view.selected_display_ranges(cx),
7244 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
7245 );
7246
7247 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
7248 view.outdent(&Outdent, cx);
7249 assert_eq!(view.text(cx), "one two\nthree\n four");
7250 assert_eq!(
7251 view.selected_display_ranges(cx),
7252 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
7253 );
7254 });
7255 }
7256
7257 #[gpui::test]
7258 fn test_backspace(cx: &mut gpui::MutableAppContext) {
7259 populate_settings(cx);
7260 let (_, view) = cx.add_window(Default::default(), |cx| {
7261 build_editor(MultiBuffer::build_simple("", cx), cx)
7262 });
7263
7264 view.update(cx, |view, cx| {
7265 view.set_text("one two three\nfour five six\nseven eight nine\nten\n", cx);
7266 view.select_display_ranges(
7267 &[
7268 // an empty selection - the preceding character is deleted
7269 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7270 // one character selected - it is deleted
7271 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7272 // a line suffix selected - it is deleted
7273 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
7274 ],
7275 cx,
7276 );
7277 view.backspace(&Backspace, cx);
7278 assert_eq!(view.text(cx), "oe two three\nfou five six\nseven ten\n");
7279
7280 view.set_text(" one\n two\n three\n four", cx);
7281 view.select_display_ranges(
7282 &[
7283 // cursors at the the end of leading indent - last indent is deleted
7284 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
7285 DisplayPoint::new(1, 8)..DisplayPoint::new(1, 8),
7286 // cursors inside leading indent - overlapping indent deletions are coalesced
7287 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
7288 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7289 DisplayPoint::new(2, 6)..DisplayPoint::new(2, 6),
7290 // cursor at the beginning of a line - preceding newline is deleted
7291 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7292 // selection inside leading indent - only the selected character is deleted
7293 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 3),
7294 ],
7295 cx,
7296 );
7297 view.backspace(&Backspace, cx);
7298 assert_eq!(view.text(cx), "one\n two\n three four");
7299 });
7300 }
7301
7302 #[gpui::test]
7303 fn test_delete(cx: &mut gpui::MutableAppContext) {
7304 populate_settings(cx);
7305 let buffer =
7306 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
7307 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7308
7309 view.update(cx, |view, cx| {
7310 view.select_display_ranges(
7311 &[
7312 // an empty selection - the following character is deleted
7313 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7314 // one character selected - it is deleted
7315 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7316 // a line suffix selected - it is deleted
7317 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
7318 ],
7319 cx,
7320 );
7321 view.delete(&Delete, cx);
7322 });
7323
7324 assert_eq!(
7325 buffer.read(cx).read(cx).text(),
7326 "on two three\nfou five six\nseven ten\n"
7327 );
7328 }
7329
7330 #[gpui::test]
7331 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
7332 populate_settings(cx);
7333 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7334 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7335 view.update(cx, |view, cx| {
7336 view.select_display_ranges(
7337 &[
7338 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7339 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
7340 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7341 ],
7342 cx,
7343 );
7344 view.delete_line(&DeleteLine, cx);
7345 assert_eq!(view.display_text(cx), "ghi");
7346 assert_eq!(
7347 view.selected_display_ranges(cx),
7348 vec![
7349 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7350 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
7351 ]
7352 );
7353 });
7354
7355 populate_settings(cx);
7356 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7357 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7358 view.update(cx, |view, cx| {
7359 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx);
7360 view.delete_line(&DeleteLine, cx);
7361 assert_eq!(view.display_text(cx), "ghi\n");
7362 assert_eq!(
7363 view.selected_display_ranges(cx),
7364 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
7365 );
7366 });
7367 }
7368
7369 #[gpui::test]
7370 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
7371 populate_settings(cx);
7372 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7373 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7374 view.update(cx, |view, cx| {
7375 view.select_display_ranges(
7376 &[
7377 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7378 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7379 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7380 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7381 ],
7382 cx,
7383 );
7384 view.duplicate_line(&DuplicateLine, cx);
7385 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
7386 assert_eq!(
7387 view.selected_display_ranges(cx),
7388 vec![
7389 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
7390 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7391 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7392 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
7393 ]
7394 );
7395 });
7396
7397 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7398 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7399 view.update(cx, |view, cx| {
7400 view.select_display_ranges(
7401 &[
7402 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
7403 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
7404 ],
7405 cx,
7406 );
7407 view.duplicate_line(&DuplicateLine, cx);
7408 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
7409 assert_eq!(
7410 view.selected_display_ranges(cx),
7411 vec![
7412 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
7413 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
7414 ]
7415 );
7416 });
7417 }
7418
7419 #[gpui::test]
7420 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
7421 populate_settings(cx);
7422 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
7423 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7424 view.update(cx, |view, cx| {
7425 view.fold_ranges(
7426 vec![
7427 Point::new(0, 2)..Point::new(1, 2),
7428 Point::new(2, 3)..Point::new(4, 1),
7429 Point::new(7, 0)..Point::new(8, 4),
7430 ],
7431 cx,
7432 );
7433 view.select_display_ranges(
7434 &[
7435 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7436 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7437 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7438 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
7439 ],
7440 cx,
7441 );
7442 assert_eq!(
7443 view.display_text(cx),
7444 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
7445 );
7446
7447 view.move_line_up(&MoveLineUp, cx);
7448 assert_eq!(
7449 view.display_text(cx),
7450 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
7451 );
7452 assert_eq!(
7453 view.selected_display_ranges(cx),
7454 vec![
7455 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7456 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7457 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
7458 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
7459 ]
7460 );
7461 });
7462
7463 view.update(cx, |view, cx| {
7464 view.move_line_down(&MoveLineDown, cx);
7465 assert_eq!(
7466 view.display_text(cx),
7467 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
7468 );
7469 assert_eq!(
7470 view.selected_display_ranges(cx),
7471 vec![
7472 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7473 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7474 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7475 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
7476 ]
7477 );
7478 });
7479
7480 view.update(cx, |view, cx| {
7481 view.move_line_down(&MoveLineDown, cx);
7482 assert_eq!(
7483 view.display_text(cx),
7484 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
7485 );
7486 assert_eq!(
7487 view.selected_display_ranges(cx),
7488 vec![
7489 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7490 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7491 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7492 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
7493 ]
7494 );
7495 });
7496
7497 view.update(cx, |view, cx| {
7498 view.move_line_up(&MoveLineUp, cx);
7499 assert_eq!(
7500 view.display_text(cx),
7501 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
7502 );
7503 assert_eq!(
7504 view.selected_display_ranges(cx),
7505 vec![
7506 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7507 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7508 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
7509 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
7510 ]
7511 );
7512 });
7513 }
7514
7515 #[gpui::test]
7516 fn test_move_line_up_down_with_blocks(cx: &mut gpui::MutableAppContext) {
7517 populate_settings(cx);
7518 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
7519 let snapshot = buffer.read(cx).snapshot(cx);
7520 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7521 editor.update(cx, |editor, cx| {
7522 editor.insert_blocks(
7523 [BlockProperties {
7524 position: snapshot.anchor_after(Point::new(2, 0)),
7525 disposition: BlockDisposition::Below,
7526 height: 1,
7527 render: Arc::new(|_| Empty::new().boxed()),
7528 }],
7529 cx,
7530 );
7531 editor.select_ranges([Point::new(2, 0)..Point::new(2, 0)], None, cx);
7532 editor.move_line_down(&MoveLineDown, cx);
7533 });
7534 }
7535
7536 #[gpui::test]
7537 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
7538 populate_settings(cx);
7539 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
7540 let view = cx
7541 .add_window(Default::default(), |cx| build_editor(buffer.clone(), cx))
7542 .1;
7543
7544 // Cut with three selections. Clipboard text is divided into three slices.
7545 view.update(cx, |view, cx| {
7546 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
7547 view.cut(&Cut, cx);
7548 assert_eq!(view.display_text(cx), "two four six ");
7549 });
7550
7551 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
7552 view.update(cx, |view, cx| {
7553 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
7554 view.paste(&Paste, cx);
7555 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
7556 assert_eq!(
7557 view.selected_display_ranges(cx),
7558 &[
7559 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
7560 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
7561 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
7562 ]
7563 );
7564 });
7565
7566 // Paste again but with only two cursors. Since the number of cursors doesn't
7567 // match the number of slices in the clipboard, the entire clipboard text
7568 // is pasted at each cursor.
7569 view.update(cx, |view, cx| {
7570 view.select_ranges(vec![0..0, 31..31], None, cx);
7571 view.handle_input(&Input("( ".into()), cx);
7572 view.paste(&Paste, cx);
7573 view.handle_input(&Input(") ".into()), cx);
7574 assert_eq!(
7575 view.display_text(cx),
7576 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7577 );
7578 });
7579
7580 view.update(cx, |view, cx| {
7581 view.select_ranges(vec![0..0], None, cx);
7582 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
7583 assert_eq!(
7584 view.display_text(cx),
7585 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7586 );
7587 });
7588
7589 // Cut with three selections, one of which is full-line.
7590 view.update(cx, |view, cx| {
7591 view.select_display_ranges(
7592 &[
7593 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
7594 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7595 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
7596 ],
7597 cx,
7598 );
7599 view.cut(&Cut, cx);
7600 assert_eq!(
7601 view.display_text(cx),
7602 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7603 );
7604 });
7605
7606 // Paste with three selections, noticing how the copied selection that was full-line
7607 // gets inserted before the second cursor.
7608 view.update(cx, |view, cx| {
7609 view.select_display_ranges(
7610 &[
7611 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7612 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7613 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
7614 ],
7615 cx,
7616 );
7617 view.paste(&Paste, cx);
7618 assert_eq!(
7619 view.display_text(cx),
7620 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
7621 );
7622 assert_eq!(
7623 view.selected_display_ranges(cx),
7624 &[
7625 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7626 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7627 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
7628 ]
7629 );
7630 });
7631
7632 // Copy with a single cursor only, which writes the whole line into the clipboard.
7633 view.update(cx, |view, cx| {
7634 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx);
7635 view.copy(&Copy, cx);
7636 });
7637
7638 // Paste with three selections, noticing how the copied full-line selection is inserted
7639 // before the empty selections but replaces the selection that is non-empty.
7640 view.update(cx, |view, cx| {
7641 view.select_display_ranges(
7642 &[
7643 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7644 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
7645 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7646 ],
7647 cx,
7648 );
7649 view.paste(&Paste, cx);
7650 assert_eq!(
7651 view.display_text(cx),
7652 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
7653 );
7654 assert_eq!(
7655 view.selected_display_ranges(cx),
7656 &[
7657 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7658 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7659 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
7660 ]
7661 );
7662 });
7663 }
7664
7665 #[gpui::test]
7666 fn test_select_all(cx: &mut gpui::MutableAppContext) {
7667 populate_settings(cx);
7668 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
7669 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7670 view.update(cx, |view, cx| {
7671 view.select_all(&SelectAll, cx);
7672 assert_eq!(
7673 view.selected_display_ranges(cx),
7674 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
7675 );
7676 });
7677 }
7678
7679 #[gpui::test]
7680 fn test_select_line(cx: &mut gpui::MutableAppContext) {
7681 populate_settings(cx);
7682 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
7683 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7684 view.update(cx, |view, cx| {
7685 view.select_display_ranges(
7686 &[
7687 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7688 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7689 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7690 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
7691 ],
7692 cx,
7693 );
7694 view.select_line(&SelectLine, cx);
7695 assert_eq!(
7696 view.selected_display_ranges(cx),
7697 vec![
7698 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
7699 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
7700 ]
7701 );
7702 });
7703
7704 view.update(cx, |view, cx| {
7705 view.select_line(&SelectLine, cx);
7706 assert_eq!(
7707 view.selected_display_ranges(cx),
7708 vec![
7709 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
7710 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
7711 ]
7712 );
7713 });
7714
7715 view.update(cx, |view, cx| {
7716 view.select_line(&SelectLine, cx);
7717 assert_eq!(
7718 view.selected_display_ranges(cx),
7719 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
7720 );
7721 });
7722 }
7723
7724 #[gpui::test]
7725 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
7726 populate_settings(cx);
7727 let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
7728 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7729 view.update(cx, |view, cx| {
7730 view.fold_ranges(
7731 vec![
7732 Point::new(0, 2)..Point::new(1, 2),
7733 Point::new(2, 3)..Point::new(4, 1),
7734 Point::new(7, 0)..Point::new(8, 4),
7735 ],
7736 cx,
7737 );
7738 view.select_display_ranges(
7739 &[
7740 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7741 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7742 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7743 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
7744 ],
7745 cx,
7746 );
7747 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
7748 });
7749
7750 view.update(cx, |view, cx| {
7751 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
7752 assert_eq!(
7753 view.display_text(cx),
7754 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
7755 );
7756 assert_eq!(
7757 view.selected_display_ranges(cx),
7758 [
7759 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7760 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7761 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
7762 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
7763 ]
7764 );
7765 });
7766
7767 view.update(cx, |view, cx| {
7768 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx);
7769 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
7770 assert_eq!(
7771 view.display_text(cx),
7772 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
7773 );
7774 assert_eq!(
7775 view.selected_display_ranges(cx),
7776 [
7777 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
7778 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
7779 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7780 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
7781 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
7782 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
7783 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
7784 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
7785 ]
7786 );
7787 });
7788 }
7789
7790 #[gpui::test]
7791 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
7792 populate_settings(cx);
7793 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
7794 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7795
7796 view.update(cx, |view, cx| {
7797 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx);
7798 });
7799 view.update(cx, |view, cx| {
7800 view.add_selection_above(&AddSelectionAbove, cx);
7801 assert_eq!(
7802 view.selected_display_ranges(cx),
7803 vec![
7804 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7805 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
7806 ]
7807 );
7808 });
7809
7810 view.update(cx, |view, cx| {
7811 view.add_selection_above(&AddSelectionAbove, cx);
7812 assert_eq!(
7813 view.selected_display_ranges(cx),
7814 vec![
7815 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7816 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
7817 ]
7818 );
7819 });
7820
7821 view.update(cx, |view, cx| {
7822 view.add_selection_below(&AddSelectionBelow, cx);
7823 assert_eq!(
7824 view.selected_display_ranges(cx),
7825 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
7826 );
7827 });
7828
7829 view.update(cx, |view, cx| {
7830 view.add_selection_below(&AddSelectionBelow, cx);
7831 assert_eq!(
7832 view.selected_display_ranges(cx),
7833 vec![
7834 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7835 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
7836 ]
7837 );
7838 });
7839
7840 view.update(cx, |view, cx| {
7841 view.add_selection_below(&AddSelectionBelow, cx);
7842 assert_eq!(
7843 view.selected_display_ranges(cx),
7844 vec![
7845 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7846 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
7847 ]
7848 );
7849 });
7850
7851 view.update(cx, |view, cx| {
7852 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx);
7853 });
7854 view.update(cx, |view, cx| {
7855 view.add_selection_below(&AddSelectionBelow, cx);
7856 assert_eq!(
7857 view.selected_display_ranges(cx),
7858 vec![
7859 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7860 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
7861 ]
7862 );
7863 });
7864
7865 view.update(cx, |view, cx| {
7866 view.add_selection_below(&AddSelectionBelow, cx);
7867 assert_eq!(
7868 view.selected_display_ranges(cx),
7869 vec![
7870 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7871 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
7872 ]
7873 );
7874 });
7875
7876 view.update(cx, |view, cx| {
7877 view.add_selection_above(&AddSelectionAbove, cx);
7878 assert_eq!(
7879 view.selected_display_ranges(cx),
7880 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
7881 );
7882 });
7883
7884 view.update(cx, |view, cx| {
7885 view.add_selection_above(&AddSelectionAbove, cx);
7886 assert_eq!(
7887 view.selected_display_ranges(cx),
7888 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
7889 );
7890 });
7891
7892 view.update(cx, |view, cx| {
7893 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx);
7894 view.add_selection_below(&AddSelectionBelow, cx);
7895 assert_eq!(
7896 view.selected_display_ranges(cx),
7897 vec![
7898 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7899 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7900 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7901 ]
7902 );
7903 });
7904
7905 view.update(cx, |view, cx| {
7906 view.add_selection_below(&AddSelectionBelow, cx);
7907 assert_eq!(
7908 view.selected_display_ranges(cx),
7909 vec![
7910 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7911 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7912 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7913 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
7914 ]
7915 );
7916 });
7917
7918 view.update(cx, |view, cx| {
7919 view.add_selection_above(&AddSelectionAbove, cx);
7920 assert_eq!(
7921 view.selected_display_ranges(cx),
7922 vec![
7923 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7924 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7925 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7926 ]
7927 );
7928 });
7929
7930 view.update(cx, |view, cx| {
7931 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx);
7932 });
7933 view.update(cx, |view, cx| {
7934 view.add_selection_above(&AddSelectionAbove, cx);
7935 assert_eq!(
7936 view.selected_display_ranges(cx),
7937 vec![
7938 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
7939 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
7940 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
7941 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
7942 ]
7943 );
7944 });
7945
7946 view.update(cx, |view, cx| {
7947 view.add_selection_below(&AddSelectionBelow, cx);
7948 assert_eq!(
7949 view.selected_display_ranges(cx),
7950 vec![
7951 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
7952 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
7953 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
7954 ]
7955 );
7956 });
7957 }
7958
7959 #[gpui::test]
7960 async fn test_select_larger_smaller_syntax_node(cx: &mut gpui::TestAppContext) {
7961 cx.update(populate_settings);
7962 let language = Arc::new(Language::new(
7963 LanguageConfig::default(),
7964 Some(tree_sitter_rust::language()),
7965 ));
7966
7967 let text = r#"
7968 use mod1::mod2::{mod3, mod4};
7969
7970 fn fn_1(param1: bool, param2: &str) {
7971 let var1 = "text";
7972 }
7973 "#
7974 .unindent();
7975
7976 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7977 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7978 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
7979 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
7980 .await;
7981
7982 view.update(cx, |view, cx| {
7983 view.select_display_ranges(
7984 &[
7985 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7986 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7987 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7988 ],
7989 cx,
7990 );
7991 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7992 });
7993 assert_eq!(
7994 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7995 &[
7996 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
7997 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7998 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
7999 ]
8000 );
8001
8002 view.update(cx, |view, cx| {
8003 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8004 });
8005 assert_eq!(
8006 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8007 &[
8008 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
8009 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
8010 ]
8011 );
8012
8013 view.update(cx, |view, cx| {
8014 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8015 });
8016 assert_eq!(
8017 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8018 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
8019 );
8020
8021 // Trying to expand the selected syntax node one more time has no effect.
8022 view.update(cx, |view, cx| {
8023 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8024 });
8025 assert_eq!(
8026 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8027 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
8028 );
8029
8030 view.update(cx, |view, cx| {
8031 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8032 });
8033 assert_eq!(
8034 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8035 &[
8036 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
8037 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
8038 ]
8039 );
8040
8041 view.update(cx, |view, cx| {
8042 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8043 });
8044 assert_eq!(
8045 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8046 &[
8047 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
8048 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
8049 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
8050 ]
8051 );
8052
8053 view.update(cx, |view, cx| {
8054 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8055 });
8056 assert_eq!(
8057 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8058 &[
8059 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
8060 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
8061 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
8062 ]
8063 );
8064
8065 // Trying to shrink the selected syntax node one more time has no effect.
8066 view.update(cx, |view, cx| {
8067 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8068 });
8069 assert_eq!(
8070 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8071 &[
8072 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
8073 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
8074 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
8075 ]
8076 );
8077
8078 // Ensure that we keep expanding the selection if the larger selection starts or ends within
8079 // a fold.
8080 view.update(cx, |view, cx| {
8081 view.fold_ranges(
8082 vec![
8083 Point::new(0, 21)..Point::new(0, 24),
8084 Point::new(3, 20)..Point::new(3, 22),
8085 ],
8086 cx,
8087 );
8088 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8089 });
8090 assert_eq!(
8091 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8092 &[
8093 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
8094 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
8095 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
8096 ]
8097 );
8098 }
8099
8100 #[gpui::test]
8101 async fn test_autoindent_selections(cx: &mut gpui::TestAppContext) {
8102 cx.update(populate_settings);
8103 let language = Arc::new(
8104 Language::new(
8105 LanguageConfig {
8106 brackets: vec![
8107 BracketPair {
8108 start: "{".to_string(),
8109 end: "}".to_string(),
8110 close: false,
8111 newline: true,
8112 },
8113 BracketPair {
8114 start: "(".to_string(),
8115 end: ")".to_string(),
8116 close: false,
8117 newline: true,
8118 },
8119 ],
8120 ..Default::default()
8121 },
8122 Some(tree_sitter_rust::language()),
8123 )
8124 .with_indents_query(
8125 r#"
8126 (_ "(" ")" @end) @indent
8127 (_ "{" "}" @end) @indent
8128 "#,
8129 )
8130 .unwrap(),
8131 );
8132
8133 let text = "fn a() {}";
8134
8135 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8136 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8137 let (_, editor) = cx.add_window(|cx| build_editor(buffer, cx));
8138 editor
8139 .condition(&cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
8140 .await;
8141
8142 editor.update(cx, |editor, cx| {
8143 editor.select_ranges([5..5, 8..8, 9..9], None, cx);
8144 editor.newline(&Newline, cx);
8145 assert_eq!(editor.text(cx), "fn a(\n \n) {\n \n}\n");
8146 assert_eq!(
8147 editor.selected_ranges(cx),
8148 &[
8149 Point::new(1, 4)..Point::new(1, 4),
8150 Point::new(3, 4)..Point::new(3, 4),
8151 Point::new(5, 0)..Point::new(5, 0)
8152 ]
8153 );
8154 });
8155 }
8156
8157 #[gpui::test]
8158 async fn test_autoclose_pairs(cx: &mut gpui::TestAppContext) {
8159 cx.update(populate_settings);
8160 let language = Arc::new(Language::new(
8161 LanguageConfig {
8162 brackets: vec![
8163 BracketPair {
8164 start: "{".to_string(),
8165 end: "}".to_string(),
8166 close: true,
8167 newline: true,
8168 },
8169 BracketPair {
8170 start: "/*".to_string(),
8171 end: " */".to_string(),
8172 close: true,
8173 newline: true,
8174 },
8175 ],
8176 autoclose_before: "})]".to_string(),
8177 ..Default::default()
8178 },
8179 Some(tree_sitter_rust::language()),
8180 ));
8181
8182 let text = r#"
8183 a
8184
8185 /
8186
8187 "#
8188 .unindent();
8189
8190 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8191 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8192 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
8193 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
8194 .await;
8195
8196 view.update(cx, |view, cx| {
8197 view.select_display_ranges(
8198 &[
8199 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
8200 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
8201 ],
8202 cx,
8203 );
8204
8205 view.handle_input(&Input("{".to_string()), cx);
8206 view.handle_input(&Input("{".to_string()), cx);
8207 view.handle_input(&Input("{".to_string()), cx);
8208 assert_eq!(
8209 view.text(cx),
8210 "
8211 {{{}}}
8212 {{{}}}
8213 /
8214
8215 "
8216 .unindent()
8217 );
8218
8219 view.move_right(&MoveRight, cx);
8220 view.handle_input(&Input("}".to_string()), cx);
8221 view.handle_input(&Input("}".to_string()), cx);
8222 view.handle_input(&Input("}".to_string()), cx);
8223 assert_eq!(
8224 view.text(cx),
8225 "
8226 {{{}}}}
8227 {{{}}}}
8228 /
8229
8230 "
8231 .unindent()
8232 );
8233
8234 view.undo(&Undo, cx);
8235 view.handle_input(&Input("/".to_string()), cx);
8236 view.handle_input(&Input("*".to_string()), cx);
8237 assert_eq!(
8238 view.text(cx),
8239 "
8240 /* */
8241 /* */
8242 /
8243
8244 "
8245 .unindent()
8246 );
8247
8248 view.undo(&Undo, cx);
8249 view.select_display_ranges(
8250 &[
8251 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
8252 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
8253 ],
8254 cx,
8255 );
8256 view.handle_input(&Input("*".to_string()), cx);
8257 assert_eq!(
8258 view.text(cx),
8259 "
8260 a
8261
8262 /*
8263 *
8264 "
8265 .unindent()
8266 );
8267
8268 // Don't autoclose if the next character isn't whitespace and isn't
8269 // listed in the language's "autoclose_before" section.
8270 view.finalize_last_transaction(cx);
8271 view.select_display_ranges(&[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)], cx);
8272 view.handle_input(&Input("{".to_string()), cx);
8273 assert_eq!(
8274 view.text(cx),
8275 "
8276 {a
8277
8278 /*
8279 *
8280 "
8281 .unindent()
8282 );
8283
8284 view.undo(&Undo, cx);
8285 view.select_display_ranges(&[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1)], cx);
8286 view.handle_input(&Input("{".to_string()), cx);
8287 assert_eq!(
8288 view.text(cx),
8289 "
8290 {a}
8291
8292 /*
8293 *
8294 "
8295 .unindent()
8296 );
8297 assert_eq!(
8298 view.selected_display_ranges(cx),
8299 [DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)]
8300 );
8301 });
8302 }
8303
8304 #[gpui::test]
8305 async fn test_snippets(cx: &mut gpui::TestAppContext) {
8306 cx.update(populate_settings);
8307
8308 let text = "
8309 a. b
8310 a. b
8311 a. b
8312 "
8313 .unindent();
8314 let buffer = cx.update(|cx| MultiBuffer::build_simple(&text, cx));
8315 let (_, editor) = cx.add_window(|cx| build_editor(buffer, cx));
8316
8317 editor.update(cx, |editor, cx| {
8318 let buffer = &editor.snapshot(cx).buffer_snapshot;
8319 let snippet = Snippet::parse("f(${1:one}, ${2:two}, ${1:three})$0").unwrap();
8320 let insertion_ranges = [
8321 Point::new(0, 2).to_offset(buffer)..Point::new(0, 2).to_offset(buffer),
8322 Point::new(1, 2).to_offset(buffer)..Point::new(1, 2).to_offset(buffer),
8323 Point::new(2, 2).to_offset(buffer)..Point::new(2, 2).to_offset(buffer),
8324 ];
8325
8326 editor
8327 .insert_snippet(&insertion_ranges, snippet, cx)
8328 .unwrap();
8329 assert_eq!(
8330 editor.text(cx),
8331 "
8332 a.f(one, two, three) b
8333 a.f(one, two, three) b
8334 a.f(one, two, three) b
8335 "
8336 .unindent()
8337 );
8338 assert_eq!(
8339 editor.selected_ranges::<Point>(cx),
8340 &[
8341 Point::new(0, 4)..Point::new(0, 7),
8342 Point::new(0, 14)..Point::new(0, 19),
8343 Point::new(1, 4)..Point::new(1, 7),
8344 Point::new(1, 14)..Point::new(1, 19),
8345 Point::new(2, 4)..Point::new(2, 7),
8346 Point::new(2, 14)..Point::new(2, 19),
8347 ]
8348 );
8349
8350 // Can't move earlier than the first tab stop
8351 editor.move_to_prev_snippet_tabstop(cx);
8352 assert_eq!(
8353 editor.selected_ranges::<Point>(cx),
8354 &[
8355 Point::new(0, 4)..Point::new(0, 7),
8356 Point::new(0, 14)..Point::new(0, 19),
8357 Point::new(1, 4)..Point::new(1, 7),
8358 Point::new(1, 14)..Point::new(1, 19),
8359 Point::new(2, 4)..Point::new(2, 7),
8360 Point::new(2, 14)..Point::new(2, 19),
8361 ]
8362 );
8363
8364 assert!(editor.move_to_next_snippet_tabstop(cx));
8365 assert_eq!(
8366 editor.selected_ranges::<Point>(cx),
8367 &[
8368 Point::new(0, 9)..Point::new(0, 12),
8369 Point::new(1, 9)..Point::new(1, 12),
8370 Point::new(2, 9)..Point::new(2, 12)
8371 ]
8372 );
8373
8374 editor.move_to_prev_snippet_tabstop(cx);
8375 assert_eq!(
8376 editor.selected_ranges::<Point>(cx),
8377 &[
8378 Point::new(0, 4)..Point::new(0, 7),
8379 Point::new(0, 14)..Point::new(0, 19),
8380 Point::new(1, 4)..Point::new(1, 7),
8381 Point::new(1, 14)..Point::new(1, 19),
8382 Point::new(2, 4)..Point::new(2, 7),
8383 Point::new(2, 14)..Point::new(2, 19),
8384 ]
8385 );
8386
8387 assert!(editor.move_to_next_snippet_tabstop(cx));
8388 assert!(editor.move_to_next_snippet_tabstop(cx));
8389 assert_eq!(
8390 editor.selected_ranges::<Point>(cx),
8391 &[
8392 Point::new(0, 20)..Point::new(0, 20),
8393 Point::new(1, 20)..Point::new(1, 20),
8394 Point::new(2, 20)..Point::new(2, 20)
8395 ]
8396 );
8397
8398 // As soon as the last tab stop is reached, snippet state is gone
8399 editor.move_to_prev_snippet_tabstop(cx);
8400 assert_eq!(
8401 editor.selected_ranges::<Point>(cx),
8402 &[
8403 Point::new(0, 20)..Point::new(0, 20),
8404 Point::new(1, 20)..Point::new(1, 20),
8405 Point::new(2, 20)..Point::new(2, 20)
8406 ]
8407 );
8408 });
8409 }
8410
8411 #[gpui::test]
8412 async fn test_completion(cx: &mut gpui::TestAppContext) {
8413 cx.update(populate_settings);
8414
8415 let (mut language_server_config, mut fake_servers) = LanguageServerConfig::fake();
8416 language_server_config.set_fake_capabilities(lsp::ServerCapabilities {
8417 completion_provider: Some(lsp::CompletionOptions {
8418 trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
8419 ..Default::default()
8420 }),
8421 ..Default::default()
8422 });
8423 let language = Arc::new(Language::new(
8424 LanguageConfig {
8425 name: "Rust".into(),
8426 path_suffixes: vec!["rs".to_string()],
8427 language_server: Some(language_server_config),
8428 ..Default::default()
8429 },
8430 Some(tree_sitter_rust::language()),
8431 ));
8432
8433 let text = "
8434 one
8435 two
8436 three
8437 "
8438 .unindent();
8439
8440 let fs = FakeFs::new(cx.background().clone());
8441 fs.insert_file("/file.rs", text).await;
8442
8443 let project = Project::test(fs, cx);
8444 project.update(cx, |project, _| project.languages().add(language));
8445
8446 let worktree_id = project
8447 .update(cx, |project, cx| {
8448 project.find_or_create_local_worktree("/file.rs", true, cx)
8449 })
8450 .await
8451 .unwrap()
8452 .0
8453 .read_with(cx, |tree, _| tree.id());
8454 let buffer = project
8455 .update(cx, |project, cx| project.open_buffer((worktree_id, ""), cx))
8456 .await
8457 .unwrap();
8458 let mut fake_server = fake_servers.next().await.unwrap();
8459
8460 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8461 let (_, editor) = cx.add_window(|cx| build_editor(buffer, cx));
8462
8463 editor.update(cx, |editor, cx| {
8464 editor.project = Some(project);
8465 editor.select_ranges([Point::new(0, 3)..Point::new(0, 3)], None, cx);
8466 editor.handle_input(&Input(".".to_string()), cx);
8467 });
8468
8469 handle_completion_request(
8470 &mut fake_server,
8471 "/file.rs",
8472 Point::new(0, 4),
8473 vec![
8474 (Point::new(0, 4)..Point::new(0, 4), "first_completion"),
8475 (Point::new(0, 4)..Point::new(0, 4), "second_completion"),
8476 ],
8477 )
8478 .await;
8479 editor
8480 .condition(&cx, |editor, _| editor.context_menu_visible())
8481 .await;
8482
8483 let apply_additional_edits = editor.update(cx, |editor, cx| {
8484 editor.move_down(&MoveDown, cx);
8485 let apply_additional_edits = editor
8486 .confirm_completion(&ConfirmCompletion(None), cx)
8487 .unwrap();
8488 assert_eq!(
8489 editor.text(cx),
8490 "
8491 one.second_completion
8492 two
8493 three
8494 "
8495 .unindent()
8496 );
8497 apply_additional_edits
8498 });
8499
8500 handle_resolve_completion_request(
8501 &mut fake_server,
8502 Some((Point::new(2, 5)..Point::new(2, 5), "\nadditional edit")),
8503 )
8504 .await;
8505 apply_additional_edits.await.unwrap();
8506 assert_eq!(
8507 editor.read_with(cx, |editor, cx| editor.text(cx)),
8508 "
8509 one.second_completion
8510 two
8511 three
8512 additional edit
8513 "
8514 .unindent()
8515 );
8516
8517 editor.update(cx, |editor, cx| {
8518 editor.select_ranges(
8519 [
8520 Point::new(1, 3)..Point::new(1, 3),
8521 Point::new(2, 5)..Point::new(2, 5),
8522 ],
8523 None,
8524 cx,
8525 );
8526
8527 editor.handle_input(&Input(" ".to_string()), cx);
8528 assert!(editor.context_menu.is_none());
8529 editor.handle_input(&Input("s".to_string()), cx);
8530 assert!(editor.context_menu.is_none());
8531 });
8532
8533 handle_completion_request(
8534 &mut fake_server,
8535 "/file.rs",
8536 Point::new(2, 7),
8537 vec![
8538 (Point::new(2, 6)..Point::new(2, 7), "fourth_completion"),
8539 (Point::new(2, 6)..Point::new(2, 7), "fifth_completion"),
8540 (Point::new(2, 6)..Point::new(2, 7), "sixth_completion"),
8541 ],
8542 )
8543 .await;
8544 editor
8545 .condition(&cx, |editor, _| editor.context_menu_visible())
8546 .await;
8547
8548 editor.update(cx, |editor, cx| {
8549 editor.handle_input(&Input("i".to_string()), cx);
8550 });
8551
8552 handle_completion_request(
8553 &mut fake_server,
8554 "/file.rs",
8555 Point::new(2, 8),
8556 vec![
8557 (Point::new(2, 6)..Point::new(2, 8), "fourth_completion"),
8558 (Point::new(2, 6)..Point::new(2, 8), "fifth_completion"),
8559 (Point::new(2, 6)..Point::new(2, 8), "sixth_completion"),
8560 ],
8561 )
8562 .await;
8563 editor
8564 .condition(&cx, |editor, _| editor.context_menu_visible())
8565 .await;
8566
8567 let apply_additional_edits = editor.update(cx, |editor, cx| {
8568 let apply_additional_edits = editor
8569 .confirm_completion(&ConfirmCompletion(None), cx)
8570 .unwrap();
8571 assert_eq!(
8572 editor.text(cx),
8573 "
8574 one.second_completion
8575 two sixth_completion
8576 three sixth_completion
8577 additional edit
8578 "
8579 .unindent()
8580 );
8581 apply_additional_edits
8582 });
8583 handle_resolve_completion_request(&mut fake_server, None).await;
8584 apply_additional_edits.await.unwrap();
8585
8586 async fn handle_completion_request(
8587 fake: &mut FakeLanguageServer,
8588 path: &'static str,
8589 position: Point,
8590 completions: Vec<(Range<Point>, &'static str)>,
8591 ) {
8592 fake.handle_request::<lsp::request::Completion, _>(move |params, _| {
8593 assert_eq!(
8594 params.text_document_position.text_document.uri,
8595 lsp::Url::from_file_path(path).unwrap()
8596 );
8597 assert_eq!(
8598 params.text_document_position.position,
8599 lsp::Position::new(position.row, position.column)
8600 );
8601 Some(lsp::CompletionResponse::Array(
8602 completions
8603 .iter()
8604 .map(|(range, new_text)| lsp::CompletionItem {
8605 label: new_text.to_string(),
8606 text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
8607 range: lsp::Range::new(
8608 lsp::Position::new(range.start.row, range.start.column),
8609 lsp::Position::new(range.start.row, range.start.column),
8610 ),
8611 new_text: new_text.to_string(),
8612 })),
8613 ..Default::default()
8614 })
8615 .collect(),
8616 ))
8617 })
8618 .next()
8619 .await;
8620 }
8621
8622 async fn handle_resolve_completion_request(
8623 fake: &mut FakeLanguageServer,
8624 edit: Option<(Range<Point>, &'static str)>,
8625 ) {
8626 fake.handle_request::<lsp::request::ResolveCompletionItem, _>(move |_, _| {
8627 lsp::CompletionItem {
8628 additional_text_edits: edit.clone().map(|(range, new_text)| {
8629 vec![lsp::TextEdit::new(
8630 lsp::Range::new(
8631 lsp::Position::new(range.start.row, range.start.column),
8632 lsp::Position::new(range.end.row, range.end.column),
8633 ),
8634 new_text.to_string(),
8635 )]
8636 }),
8637 ..Default::default()
8638 }
8639 })
8640 .next()
8641 .await;
8642 }
8643 }
8644
8645 #[gpui::test]
8646 async fn test_toggle_comment(cx: &mut gpui::TestAppContext) {
8647 cx.update(populate_settings);
8648 let language = Arc::new(Language::new(
8649 LanguageConfig {
8650 line_comment: Some("// ".to_string()),
8651 ..Default::default()
8652 },
8653 Some(tree_sitter_rust::language()),
8654 ));
8655
8656 let text = "
8657 fn a() {
8658 //b();
8659 // c();
8660 // d();
8661 }
8662 "
8663 .unindent();
8664
8665 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8666 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8667 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
8668
8669 view.update(cx, |editor, cx| {
8670 // If multiple selections intersect a line, the line is only
8671 // toggled once.
8672 editor.select_display_ranges(
8673 &[
8674 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
8675 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
8676 ],
8677 cx,
8678 );
8679 editor.toggle_comments(&ToggleComments, cx);
8680 assert_eq!(
8681 editor.text(cx),
8682 "
8683 fn a() {
8684 b();
8685 c();
8686 d();
8687 }
8688 "
8689 .unindent()
8690 );
8691
8692 // The comment prefix is inserted at the same column for every line
8693 // in a selection.
8694 editor.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx);
8695 editor.toggle_comments(&ToggleComments, cx);
8696 assert_eq!(
8697 editor.text(cx),
8698 "
8699 fn a() {
8700 // b();
8701 // c();
8702 // d();
8703 }
8704 "
8705 .unindent()
8706 );
8707
8708 // If a selection ends at the beginning of a line, that line is not toggled.
8709 editor.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx);
8710 editor.toggle_comments(&ToggleComments, cx);
8711 assert_eq!(
8712 editor.text(cx),
8713 "
8714 fn a() {
8715 // b();
8716 c();
8717 // d();
8718 }
8719 "
8720 .unindent()
8721 );
8722 });
8723 }
8724
8725 #[gpui::test]
8726 fn test_editing_disjoint_excerpts(cx: &mut gpui::MutableAppContext) {
8727 populate_settings(cx);
8728 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8729 let multibuffer = cx.add_model(|cx| {
8730 let mut multibuffer = MultiBuffer::new(0);
8731 multibuffer.push_excerpts(
8732 buffer.clone(),
8733 [
8734 Point::new(0, 0)..Point::new(0, 4),
8735 Point::new(1, 0)..Point::new(1, 4),
8736 ],
8737 cx,
8738 );
8739 multibuffer
8740 });
8741
8742 assert_eq!(multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb");
8743
8744 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(multibuffer, cx));
8745 view.update(cx, |view, cx| {
8746 assert_eq!(view.text(cx), "aaaa\nbbbb");
8747 view.select_ranges(
8748 [
8749 Point::new(0, 0)..Point::new(0, 0),
8750 Point::new(1, 0)..Point::new(1, 0),
8751 ],
8752 None,
8753 cx,
8754 );
8755
8756 view.handle_input(&Input("X".to_string()), cx);
8757 assert_eq!(view.text(cx), "Xaaaa\nXbbbb");
8758 assert_eq!(
8759 view.selected_ranges(cx),
8760 [
8761 Point::new(0, 1)..Point::new(0, 1),
8762 Point::new(1, 1)..Point::new(1, 1),
8763 ]
8764 )
8765 });
8766 }
8767
8768 #[gpui::test]
8769 fn test_editing_overlapping_excerpts(cx: &mut gpui::MutableAppContext) {
8770 populate_settings(cx);
8771 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8772 let multibuffer = cx.add_model(|cx| {
8773 let mut multibuffer = MultiBuffer::new(0);
8774 multibuffer.push_excerpts(
8775 buffer,
8776 [
8777 Point::new(0, 0)..Point::new(1, 4),
8778 Point::new(1, 0)..Point::new(2, 4),
8779 ],
8780 cx,
8781 );
8782 multibuffer
8783 });
8784
8785 assert_eq!(
8786 multibuffer.read(cx).read(cx).text(),
8787 "aaaa\nbbbb\nbbbb\ncccc"
8788 );
8789
8790 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(multibuffer, cx));
8791 view.update(cx, |view, cx| {
8792 view.select_ranges(
8793 [
8794 Point::new(1, 1)..Point::new(1, 1),
8795 Point::new(2, 3)..Point::new(2, 3),
8796 ],
8797 None,
8798 cx,
8799 );
8800
8801 view.handle_input(&Input("X".to_string()), cx);
8802 assert_eq!(view.text(cx), "aaaa\nbXbbXb\nbXbbXb\ncccc");
8803 assert_eq!(
8804 view.selected_ranges(cx),
8805 [
8806 Point::new(1, 2)..Point::new(1, 2),
8807 Point::new(2, 5)..Point::new(2, 5),
8808 ]
8809 );
8810
8811 view.newline(&Newline, cx);
8812 assert_eq!(view.text(cx), "aaaa\nbX\nbbX\nb\nbX\nbbX\nb\ncccc");
8813 assert_eq!(
8814 view.selected_ranges(cx),
8815 [
8816 Point::new(2, 0)..Point::new(2, 0),
8817 Point::new(6, 0)..Point::new(6, 0),
8818 ]
8819 );
8820 });
8821 }
8822
8823 #[gpui::test]
8824 fn test_refresh_selections(cx: &mut gpui::MutableAppContext) {
8825 populate_settings(cx);
8826 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8827 let mut excerpt1_id = None;
8828 let multibuffer = cx.add_model(|cx| {
8829 let mut multibuffer = MultiBuffer::new(0);
8830 excerpt1_id = multibuffer
8831 .push_excerpts(
8832 buffer.clone(),
8833 [
8834 Point::new(0, 0)..Point::new(1, 4),
8835 Point::new(1, 0)..Point::new(2, 4),
8836 ],
8837 cx,
8838 )
8839 .into_iter()
8840 .next();
8841 multibuffer
8842 });
8843 assert_eq!(
8844 multibuffer.read(cx).read(cx).text(),
8845 "aaaa\nbbbb\nbbbb\ncccc"
8846 );
8847 let (_, editor) = cx.add_window(Default::default(), |cx| {
8848 let mut editor = build_editor(multibuffer.clone(), cx);
8849 let snapshot = editor.snapshot(cx);
8850 editor.select_ranges([Point::new(1, 3)..Point::new(1, 3)], None, cx);
8851 editor.begin_selection(Point::new(2, 1).to_display_point(&snapshot), true, 1, cx);
8852 assert_eq!(
8853 editor.selected_ranges(cx),
8854 [
8855 Point::new(1, 3)..Point::new(1, 3),
8856 Point::new(2, 1)..Point::new(2, 1),
8857 ]
8858 );
8859 editor
8860 });
8861
8862 // Refreshing selections is a no-op when excerpts haven't changed.
8863 editor.update(cx, |editor, cx| {
8864 editor.refresh_selections(cx);
8865 assert_eq!(
8866 editor.selected_ranges(cx),
8867 [
8868 Point::new(1, 3)..Point::new(1, 3),
8869 Point::new(2, 1)..Point::new(2, 1),
8870 ]
8871 );
8872 });
8873
8874 multibuffer.update(cx, |multibuffer, cx| {
8875 multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx);
8876 });
8877 editor.update(cx, |editor, cx| {
8878 // Removing an excerpt causes the first selection to become degenerate.
8879 assert_eq!(
8880 editor.selected_ranges(cx),
8881 [
8882 Point::new(0, 0)..Point::new(0, 0),
8883 Point::new(0, 1)..Point::new(0, 1)
8884 ]
8885 );
8886
8887 // Refreshing selections will relocate the first selection to the original buffer
8888 // location.
8889 editor.refresh_selections(cx);
8890 assert_eq!(
8891 editor.selected_ranges(cx),
8892 [
8893 Point::new(0, 1)..Point::new(0, 1),
8894 Point::new(0, 3)..Point::new(0, 3)
8895 ]
8896 );
8897 assert!(editor.pending_selection.is_some());
8898 });
8899 }
8900
8901 #[gpui::test]
8902 fn test_refresh_selections_while_selecting_with_mouse(cx: &mut gpui::MutableAppContext) {
8903 populate_settings(cx);
8904 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8905 let mut excerpt1_id = None;
8906 let multibuffer = cx.add_model(|cx| {
8907 let mut multibuffer = MultiBuffer::new(0);
8908 excerpt1_id = multibuffer
8909 .push_excerpts(
8910 buffer.clone(),
8911 [
8912 Point::new(0, 0)..Point::new(1, 4),
8913 Point::new(1, 0)..Point::new(2, 4),
8914 ],
8915 cx,
8916 )
8917 .into_iter()
8918 .next();
8919 multibuffer
8920 });
8921 assert_eq!(
8922 multibuffer.read(cx).read(cx).text(),
8923 "aaaa\nbbbb\nbbbb\ncccc"
8924 );
8925 let (_, editor) = cx.add_window(Default::default(), |cx| {
8926 let mut editor = build_editor(multibuffer.clone(), cx);
8927 let snapshot = editor.snapshot(cx);
8928 editor.begin_selection(Point::new(1, 3).to_display_point(&snapshot), false, 1, cx);
8929 assert_eq!(
8930 editor.selected_ranges(cx),
8931 [Point::new(1, 3)..Point::new(1, 3)]
8932 );
8933 editor
8934 });
8935
8936 multibuffer.update(cx, |multibuffer, cx| {
8937 multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx);
8938 });
8939 editor.update(cx, |editor, cx| {
8940 assert_eq!(
8941 editor.selected_ranges(cx),
8942 [Point::new(0, 0)..Point::new(0, 0)]
8943 );
8944
8945 // Ensure we don't panic when selections are refreshed and that the pending selection is finalized.
8946 editor.refresh_selections(cx);
8947 assert_eq!(
8948 editor.selected_ranges(cx),
8949 [Point::new(0, 3)..Point::new(0, 3)]
8950 );
8951 assert!(editor.pending_selection.is_some());
8952 });
8953 }
8954
8955 #[gpui::test]
8956 async fn test_extra_newline_insertion(cx: &mut gpui::TestAppContext) {
8957 cx.update(populate_settings);
8958 let language = Arc::new(Language::new(
8959 LanguageConfig {
8960 brackets: vec![
8961 BracketPair {
8962 start: "{".to_string(),
8963 end: "}".to_string(),
8964 close: true,
8965 newline: true,
8966 },
8967 BracketPair {
8968 start: "/* ".to_string(),
8969 end: " */".to_string(),
8970 close: true,
8971 newline: true,
8972 },
8973 ],
8974 ..Default::default()
8975 },
8976 Some(tree_sitter_rust::language()),
8977 ));
8978
8979 let text = concat!(
8980 "{ }\n", // Suppress rustfmt
8981 " x\n", //
8982 " /* */\n", //
8983 "x\n", //
8984 "{{} }\n", //
8985 );
8986
8987 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8988 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8989 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
8990 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
8991 .await;
8992
8993 view.update(cx, |view, cx| {
8994 view.select_display_ranges(
8995 &[
8996 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
8997 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
8998 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
8999 ],
9000 cx,
9001 );
9002 view.newline(&Newline, cx);
9003
9004 assert_eq!(
9005 view.buffer().read(cx).read(cx).text(),
9006 concat!(
9007 "{ \n", // Suppress rustfmt
9008 "\n", //
9009 "}\n", //
9010 " x\n", //
9011 " /* \n", //
9012 " \n", //
9013 " */\n", //
9014 "x\n", //
9015 "{{} \n", //
9016 "}\n", //
9017 )
9018 );
9019 });
9020 }
9021
9022 #[gpui::test]
9023 fn test_highlighted_ranges(cx: &mut gpui::MutableAppContext) {
9024 let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
9025 populate_settings(cx);
9026 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
9027
9028 editor.update(cx, |editor, cx| {
9029 struct Type1;
9030 struct Type2;
9031
9032 let buffer = buffer.read(cx).snapshot(cx);
9033
9034 let anchor_range = |range: Range<Point>| {
9035 buffer.anchor_after(range.start)..buffer.anchor_after(range.end)
9036 };
9037
9038 editor.highlight_background::<Type1>(
9039 vec![
9040 anchor_range(Point::new(2, 1)..Point::new(2, 3)),
9041 anchor_range(Point::new(4, 2)..Point::new(4, 4)),
9042 anchor_range(Point::new(6, 3)..Point::new(6, 5)),
9043 anchor_range(Point::new(8, 4)..Point::new(8, 6)),
9044 ],
9045 Color::red(),
9046 cx,
9047 );
9048 editor.highlight_background::<Type2>(
9049 vec![
9050 anchor_range(Point::new(3, 2)..Point::new(3, 5)),
9051 anchor_range(Point::new(5, 3)..Point::new(5, 6)),
9052 anchor_range(Point::new(7, 4)..Point::new(7, 7)),
9053 anchor_range(Point::new(9, 5)..Point::new(9, 8)),
9054 ],
9055 Color::green(),
9056 cx,
9057 );
9058
9059 let snapshot = editor.snapshot(cx);
9060 let mut highlighted_ranges = editor.background_highlights_in_range(
9061 anchor_range(Point::new(3, 4)..Point::new(7, 4)),
9062 &snapshot,
9063 );
9064 // Enforce a consistent ordering based on color without relying on the ordering of the
9065 // highlight's `TypeId` which is non-deterministic.
9066 highlighted_ranges.sort_unstable_by_key(|(_, color)| *color);
9067 assert_eq!(
9068 highlighted_ranges,
9069 &[
9070 (
9071 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 5),
9072 Color::green(),
9073 ),
9074 (
9075 DisplayPoint::new(5, 3)..DisplayPoint::new(5, 6),
9076 Color::green(),
9077 ),
9078 (
9079 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 4),
9080 Color::red(),
9081 ),
9082 (
9083 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
9084 Color::red(),
9085 ),
9086 ]
9087 );
9088 assert_eq!(
9089 editor.background_highlights_in_range(
9090 anchor_range(Point::new(5, 6)..Point::new(6, 4)),
9091 &snapshot,
9092 ),
9093 &[(
9094 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
9095 Color::red(),
9096 )]
9097 );
9098 });
9099 }
9100
9101 #[gpui::test]
9102 fn test_following(cx: &mut gpui::MutableAppContext) {
9103 let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
9104 populate_settings(cx);
9105
9106 let (_, leader) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
9107 let (_, follower) = cx.add_window(
9108 WindowOptions {
9109 bounds: WindowBounds::Fixed(RectF::from_points(vec2f(0., 0.), vec2f(10., 80.))),
9110 ..Default::default()
9111 },
9112 |cx| build_editor(buffer.clone(), cx),
9113 );
9114
9115 let pending_update = Rc::new(RefCell::new(None));
9116 follower.update(cx, {
9117 let update = pending_update.clone();
9118 |_, cx| {
9119 cx.subscribe(&leader, move |_, leader, event, cx| {
9120 leader
9121 .read(cx)
9122 .add_event_to_update_proto(event, &mut *update.borrow_mut(), cx);
9123 })
9124 .detach();
9125 }
9126 });
9127
9128 // Update the selections only
9129 leader.update(cx, |leader, cx| {
9130 leader.select_ranges([1..1], None, cx);
9131 });
9132 follower.update(cx, |follower, cx| {
9133 follower
9134 .apply_update_proto(pending_update.borrow_mut().take().unwrap(), cx)
9135 .unwrap();
9136 });
9137 assert_eq!(follower.read(cx).selected_ranges(cx), vec![1..1]);
9138
9139 // Update the scroll position only
9140 leader.update(cx, |leader, cx| {
9141 leader.set_scroll_position(vec2f(1.5, 3.5), cx);
9142 });
9143 follower.update(cx, |follower, cx| {
9144 follower
9145 .apply_update_proto(pending_update.borrow_mut().take().unwrap(), cx)
9146 .unwrap();
9147 });
9148 assert_eq!(
9149 follower.update(cx, |follower, cx| follower.scroll_position(cx)),
9150 vec2f(1.5, 3.5)
9151 );
9152
9153 // Update the selections and scroll position
9154 leader.update(cx, |leader, cx| {
9155 leader.select_ranges([0..0], None, cx);
9156 leader.request_autoscroll(Autoscroll::Newest, cx);
9157 leader.set_scroll_position(vec2f(1.5, 3.5), cx);
9158 });
9159 follower.update(cx, |follower, cx| {
9160 let initial_scroll_position = follower.scroll_position(cx);
9161 follower
9162 .apply_update_proto(pending_update.borrow_mut().take().unwrap(), cx)
9163 .unwrap();
9164 assert_eq!(follower.scroll_position(cx), initial_scroll_position);
9165 assert!(follower.autoscroll_request.is_some());
9166 });
9167 assert_eq!(follower.read(cx).selected_ranges(cx), vec![0..0]);
9168
9169 // Creating a pending selection that precedes another selection
9170 leader.update(cx, |leader, cx| {
9171 leader.select_ranges([1..1], None, cx);
9172 leader.begin_selection(DisplayPoint::new(0, 0), true, 1, cx);
9173 });
9174 follower.update(cx, |follower, cx| {
9175 follower
9176 .apply_update_proto(pending_update.borrow_mut().take().unwrap(), cx)
9177 .unwrap();
9178 });
9179 assert_eq!(follower.read(cx).selected_ranges(cx), vec![0..0, 1..1]);
9180
9181 // Extend the pending selection so that it surrounds another selection
9182 leader.update(cx, |leader, cx| {
9183 leader.extend_selection(DisplayPoint::new(0, 2), 1, cx);
9184 });
9185 follower.update(cx, |follower, cx| {
9186 follower
9187 .apply_update_proto(pending_update.borrow_mut().take().unwrap(), cx)
9188 .unwrap();
9189 });
9190 assert_eq!(follower.read(cx).selected_ranges(cx), vec![0..2]);
9191 }
9192
9193 #[test]
9194 fn test_combine_syntax_and_fuzzy_match_highlights() {
9195 let string = "abcdefghijklmnop";
9196 let syntax_ranges = [
9197 (
9198 0..3,
9199 HighlightStyle {
9200 color: Some(Color::red()),
9201 ..Default::default()
9202 },
9203 ),
9204 (
9205 4..8,
9206 HighlightStyle {
9207 color: Some(Color::green()),
9208 ..Default::default()
9209 },
9210 ),
9211 ];
9212 let match_indices = [4, 6, 7, 8];
9213 assert_eq!(
9214 combine_syntax_and_fuzzy_match_highlights(
9215 &string,
9216 Default::default(),
9217 syntax_ranges.into_iter(),
9218 &match_indices,
9219 ),
9220 &[
9221 (
9222 0..3,
9223 HighlightStyle {
9224 color: Some(Color::red()),
9225 ..Default::default()
9226 },
9227 ),
9228 (
9229 4..5,
9230 HighlightStyle {
9231 color: Some(Color::green()),
9232 weight: Some(fonts::Weight::BOLD),
9233 ..Default::default()
9234 },
9235 ),
9236 (
9237 5..6,
9238 HighlightStyle {
9239 color: Some(Color::green()),
9240 ..Default::default()
9241 },
9242 ),
9243 (
9244 6..8,
9245 HighlightStyle {
9246 color: Some(Color::green()),
9247 weight: Some(fonts::Weight::BOLD),
9248 ..Default::default()
9249 },
9250 ),
9251 (
9252 8..9,
9253 HighlightStyle {
9254 weight: Some(fonts::Weight::BOLD),
9255 ..Default::default()
9256 },
9257 ),
9258 ]
9259 );
9260 }
9261
9262 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
9263 let point = DisplayPoint::new(row as u32, column as u32);
9264 point..point
9265 }
9266
9267 fn build_editor(buffer: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Editor>) -> Editor {
9268 Editor::new(EditorMode::Full, buffer, None, None, cx)
9269 }
9270
9271 fn populate_settings(cx: &mut gpui::MutableAppContext) {
9272 let settings = Settings::test(cx);
9273 cx.set_global(settings);
9274 }
9275
9276 fn assert_selection_ranges(
9277 marked_text: &str,
9278 selection_marker_pairs: Vec<(char, char)>,
9279 view: &mut Editor,
9280 cx: &mut ViewContext<Editor>,
9281 ) {
9282 let snapshot = view.snapshot(cx).display_snapshot;
9283 let mut marker_chars = Vec::new();
9284 for (start, end) in selection_marker_pairs.iter() {
9285 marker_chars.push(*start);
9286 marker_chars.push(*end);
9287 }
9288 let (_, markers) = marked_text_by(marked_text, marker_chars);
9289 let asserted_ranges: Vec<Range<DisplayPoint>> = selection_marker_pairs
9290 .iter()
9291 .map(|(start, end)| {
9292 let start = markers.get(start).unwrap()[0].to_display_point(&snapshot);
9293 let end = markers.get(end).unwrap()[0].to_display_point(&snapshot);
9294 start..end
9295 })
9296 .collect();
9297 assert_eq!(
9298 view.selected_display_ranges(cx),
9299 &asserted_ranges[..],
9300 "Assert selections are {}",
9301 marked_text
9302 );
9303 }
9304}
9305
9306trait RangeExt<T> {
9307 fn sorted(&self) -> Range<T>;
9308 fn to_inclusive(&self) -> RangeInclusive<T>;
9309}
9310
9311impl<T: Ord + Clone> RangeExt<T> for Range<T> {
9312 fn sorted(&self) -> Self {
9313 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
9314 }
9315
9316 fn to_inclusive(&self) -> RangeInclusive<T> {
9317 self.start.clone()..=self.end.clone()
9318 }
9319}