1pub mod display_map;
2mod element;
3pub mod items;
4pub mod movement;
5mod multi_buffer;
6
7#[cfg(test)]
8mod test;
9
10use aho_corasick::AhoCorasick;
11use anyhow::Result;
12use clock::ReplicaId;
13use collections::{BTreeMap, Bound, HashMap, HashSet};
14pub use display_map::DisplayPoint;
15use display_map::*;
16pub use element::*;
17use fuzzy::{StringMatch, StringMatchCandidate};
18use gpui::{
19 action,
20 color::Color,
21 elements::*,
22 executor,
23 fonts::{self, HighlightStyle, TextStyle},
24 geometry::vector::{vec2f, Vector2F},
25 keymap::Binding,
26 platform::CursorStyle,
27 text_layout, AppContext, AsyncAppContext, ClipboardItem, Element, ElementBox, Entity,
28 ModelHandle, MutableAppContext, RenderContext, Task, View, ViewContext, ViewHandle,
29 WeakViewHandle,
30};
31use items::{BufferItemHandle, MultiBufferItemHandle};
32use itertools::Itertools as _;
33pub use language::{char_kind, CharKind};
34use language::{
35 BracketPair, Buffer, CodeAction, CodeLabel, Completion, Diagnostic, DiagnosticSeverity,
36 Language, OffsetRangeExt, Point, Selection, SelectionGoal, TransactionId,
37};
38use multi_buffer::MultiBufferChunks;
39pub use multi_buffer::{
40 Anchor, AnchorRangeExt, ExcerptId, MultiBuffer, MultiBufferSnapshot, ToOffset, ToPoint,
41};
42use ordered_float::OrderedFloat;
43use postage::watch;
44use project::{Project, ProjectTransaction};
45use serde::{Deserialize, Serialize};
46use smallvec::SmallVec;
47use smol::Timer;
48use snippet::Snippet;
49use std::{
50 any::TypeId,
51 cmp::{self, Ordering, Reverse},
52 iter::{self, FromIterator},
53 mem,
54 ops::{Deref, DerefMut, Range, RangeInclusive, Sub},
55 sync::Arc,
56 time::{Duration, Instant},
57};
58pub use sum_tree::Bias;
59use text::rope::TextDimension;
60use theme::DiagnosticStyle;
61use util::{post_inc, ResultExt, TryFutureExt};
62use workspace::{settings, ItemNavHistory, PathOpener, Settings, Workspace};
63
64const CURSOR_BLINK_INTERVAL: Duration = Duration::from_millis(500);
65const MAX_LINE_LEN: usize = 1024;
66const MIN_NAVIGATION_HISTORY_ROW_DELTA: i64 = 10;
67
68action!(Cancel);
69action!(Backspace);
70action!(Delete);
71action!(Input, String);
72action!(Newline);
73action!(Tab);
74action!(Outdent);
75action!(DeleteLine);
76action!(DeleteToPreviousWordBoundary);
77action!(DeleteToNextWordBoundary);
78action!(DeleteToBeginningOfLine);
79action!(DeleteToEndOfLine);
80action!(CutToEndOfLine);
81action!(DuplicateLine);
82action!(MoveLineUp);
83action!(MoveLineDown);
84action!(Cut);
85action!(Copy);
86action!(Paste);
87action!(Undo);
88action!(Redo);
89action!(MoveUp);
90action!(MoveDown);
91action!(MoveLeft);
92action!(MoveRight);
93action!(MoveToPreviousWordBoundary);
94action!(MoveToNextWordBoundary);
95action!(MoveToBeginningOfLine);
96action!(MoveToEndOfLine);
97action!(MoveToBeginning);
98action!(MoveToEnd);
99action!(SelectUp);
100action!(SelectDown);
101action!(SelectLeft);
102action!(SelectRight);
103action!(SelectToPreviousWordBoundary);
104action!(SelectToNextWordBoundary);
105action!(SelectToBeginningOfLine, bool);
106action!(SelectToEndOfLine, bool);
107action!(SelectToBeginning);
108action!(SelectToEnd);
109action!(SelectAll);
110action!(SelectLine);
111action!(SplitSelectionIntoLines);
112action!(AddSelectionAbove);
113action!(AddSelectionBelow);
114action!(SelectNext, bool);
115action!(ToggleComments);
116action!(SelectLargerSyntaxNode);
117action!(SelectSmallerSyntaxNode);
118action!(MoveToEnclosingBracket);
119action!(ShowNextDiagnostic);
120action!(GoToDefinition);
121action!(FindAllReferences);
122action!(Rename);
123action!(ConfirmRename);
124action!(PageUp);
125action!(PageDown);
126action!(Fold);
127action!(Unfold);
128action!(FoldSelectedRanges);
129action!(Scroll, Vector2F);
130action!(Select, SelectPhase);
131action!(ShowCompletions);
132action!(ToggleCodeActions, bool);
133action!(ConfirmCompletion, Option<usize>);
134action!(ConfirmCodeAction, Option<usize>);
135action!(OpenExcerpts);
136
137enum DocumentHighlightRead {}
138enum DocumentHighlightWrite {}
139
140pub fn init(cx: &mut MutableAppContext, path_openers: &mut Vec<Box<dyn PathOpener>>) {
141 path_openers.push(Box::new(items::BufferOpener));
142 cx.add_bindings(vec![
143 Binding::new("escape", Cancel, Some("Editor")),
144 Binding::new("backspace", Backspace, Some("Editor")),
145 Binding::new("ctrl-h", Backspace, Some("Editor")),
146 Binding::new("delete", Delete, Some("Editor")),
147 Binding::new("ctrl-d", Delete, Some("Editor")),
148 Binding::new("enter", Newline, Some("Editor && mode == full")),
149 Binding::new(
150 "alt-enter",
151 Input("\n".into()),
152 Some("Editor && mode == auto_height"),
153 ),
154 Binding::new(
155 "enter",
156 ConfirmCompletion(None),
157 Some("Editor && showing_completions"),
158 ),
159 Binding::new(
160 "enter",
161 ConfirmCodeAction(None),
162 Some("Editor && showing_code_actions"),
163 ),
164 Binding::new("enter", ConfirmRename, Some("Editor && renaming")),
165 Binding::new("tab", Tab, Some("Editor")),
166 Binding::new(
167 "tab",
168 ConfirmCompletion(None),
169 Some("Editor && showing_completions"),
170 ),
171 Binding::new("shift-tab", Outdent, Some("Editor")),
172 Binding::new("ctrl-shift-K", DeleteLine, Some("Editor")),
173 Binding::new(
174 "alt-backspace",
175 DeleteToPreviousWordBoundary,
176 Some("Editor"),
177 ),
178 Binding::new("alt-h", DeleteToPreviousWordBoundary, Some("Editor")),
179 Binding::new("alt-delete", DeleteToNextWordBoundary, Some("Editor")),
180 Binding::new("alt-d", DeleteToNextWordBoundary, Some("Editor")),
181 Binding::new("cmd-backspace", DeleteToBeginningOfLine, Some("Editor")),
182 Binding::new("cmd-delete", DeleteToEndOfLine, Some("Editor")),
183 Binding::new("ctrl-k", CutToEndOfLine, Some("Editor")),
184 Binding::new("cmd-shift-D", DuplicateLine, Some("Editor")),
185 Binding::new("ctrl-cmd-up", MoveLineUp, Some("Editor")),
186 Binding::new("ctrl-cmd-down", MoveLineDown, Some("Editor")),
187 Binding::new("cmd-x", Cut, Some("Editor")),
188 Binding::new("cmd-c", Copy, Some("Editor")),
189 Binding::new("cmd-v", Paste, Some("Editor")),
190 Binding::new("cmd-z", Undo, Some("Editor")),
191 Binding::new("cmd-shift-Z", Redo, Some("Editor")),
192 Binding::new("up", MoveUp, Some("Editor")),
193 Binding::new("down", MoveDown, Some("Editor")),
194 Binding::new("left", MoveLeft, Some("Editor")),
195 Binding::new("right", MoveRight, Some("Editor")),
196 Binding::new("ctrl-p", MoveUp, Some("Editor")),
197 Binding::new("ctrl-n", MoveDown, Some("Editor")),
198 Binding::new("ctrl-b", MoveLeft, Some("Editor")),
199 Binding::new("ctrl-f", MoveRight, Some("Editor")),
200 Binding::new("alt-left", MoveToPreviousWordBoundary, Some("Editor")),
201 Binding::new("alt-b", MoveToPreviousWordBoundary, Some("Editor")),
202 Binding::new("alt-right", MoveToNextWordBoundary, Some("Editor")),
203 Binding::new("alt-f", MoveToNextWordBoundary, Some("Editor")),
204 Binding::new("cmd-left", MoveToBeginningOfLine, Some("Editor")),
205 Binding::new("ctrl-a", MoveToBeginningOfLine, Some("Editor")),
206 Binding::new("cmd-right", MoveToEndOfLine, Some("Editor")),
207 Binding::new("ctrl-e", MoveToEndOfLine, Some("Editor")),
208 Binding::new("cmd-up", MoveToBeginning, Some("Editor")),
209 Binding::new("cmd-down", MoveToEnd, Some("Editor")),
210 Binding::new("shift-up", SelectUp, Some("Editor")),
211 Binding::new("ctrl-shift-P", SelectUp, Some("Editor")),
212 Binding::new("shift-down", SelectDown, Some("Editor")),
213 Binding::new("ctrl-shift-N", SelectDown, Some("Editor")),
214 Binding::new("shift-left", SelectLeft, Some("Editor")),
215 Binding::new("ctrl-shift-B", SelectLeft, Some("Editor")),
216 Binding::new("shift-right", SelectRight, Some("Editor")),
217 Binding::new("ctrl-shift-F", SelectRight, Some("Editor")),
218 Binding::new(
219 "alt-shift-left",
220 SelectToPreviousWordBoundary,
221 Some("Editor"),
222 ),
223 Binding::new("alt-shift-B", SelectToPreviousWordBoundary, Some("Editor")),
224 Binding::new("alt-shift-right", SelectToNextWordBoundary, Some("Editor")),
225 Binding::new("alt-shift-F", SelectToNextWordBoundary, Some("Editor")),
226 Binding::new(
227 "cmd-shift-left",
228 SelectToBeginningOfLine(true),
229 Some("Editor"),
230 ),
231 Binding::new(
232 "ctrl-shift-A",
233 SelectToBeginningOfLine(true),
234 Some("Editor"),
235 ),
236 Binding::new("cmd-shift-right", SelectToEndOfLine(true), Some("Editor")),
237 Binding::new("ctrl-shift-E", SelectToEndOfLine(true), Some("Editor")),
238 Binding::new("cmd-shift-up", SelectToBeginning, Some("Editor")),
239 Binding::new("cmd-shift-down", SelectToEnd, Some("Editor")),
240 Binding::new("cmd-a", SelectAll, Some("Editor")),
241 Binding::new("cmd-l", SelectLine, Some("Editor")),
242 Binding::new("cmd-shift-L", SplitSelectionIntoLines, Some("Editor")),
243 Binding::new("cmd-alt-up", AddSelectionAbove, Some("Editor")),
244 Binding::new("cmd-ctrl-p", AddSelectionAbove, Some("Editor")),
245 Binding::new("cmd-alt-down", AddSelectionBelow, Some("Editor")),
246 Binding::new("cmd-ctrl-n", AddSelectionBelow, Some("Editor")),
247 Binding::new("cmd-d", SelectNext(false), Some("Editor")),
248 Binding::new("cmd-k cmd-d", SelectNext(true), Some("Editor")),
249 Binding::new("cmd-/", ToggleComments, Some("Editor")),
250 Binding::new("alt-up", SelectLargerSyntaxNode, Some("Editor")),
251 Binding::new("ctrl-w", SelectLargerSyntaxNode, Some("Editor")),
252 Binding::new("alt-down", SelectSmallerSyntaxNode, Some("Editor")),
253 Binding::new("ctrl-shift-W", SelectSmallerSyntaxNode, Some("Editor")),
254 Binding::new("f8", ShowNextDiagnostic, Some("Editor")),
255 Binding::new("f2", Rename, Some("Editor")),
256 Binding::new("f12", GoToDefinition, Some("Editor")),
257 Binding::new("alt-shift-f12", FindAllReferences, Some("Editor")),
258 Binding::new("ctrl-m", MoveToEnclosingBracket, Some("Editor")),
259 Binding::new("pageup", PageUp, Some("Editor")),
260 Binding::new("pagedown", PageDown, Some("Editor")),
261 Binding::new("alt-cmd-[", Fold, Some("Editor")),
262 Binding::new("alt-cmd-]", Unfold, Some("Editor")),
263 Binding::new("alt-cmd-f", FoldSelectedRanges, Some("Editor")),
264 Binding::new("ctrl-space", ShowCompletions, Some("Editor")),
265 Binding::new("cmd-.", ToggleCodeActions(false), Some("Editor")),
266 Binding::new("alt-enter", OpenExcerpts, Some("Editor")),
267 ]);
268
269 cx.add_action(Editor::open_new);
270 cx.add_action(|this: &mut Editor, action: &Scroll, cx| this.set_scroll_position(action.0, cx));
271 cx.add_action(Editor::select);
272 cx.add_action(Editor::cancel);
273 cx.add_action(Editor::handle_input);
274 cx.add_action(Editor::newline);
275 cx.add_action(Editor::backspace);
276 cx.add_action(Editor::delete);
277 cx.add_action(Editor::tab);
278 cx.add_action(Editor::outdent);
279 cx.add_action(Editor::delete_line);
280 cx.add_action(Editor::delete_to_previous_word_boundary);
281 cx.add_action(Editor::delete_to_next_word_boundary);
282 cx.add_action(Editor::delete_to_beginning_of_line);
283 cx.add_action(Editor::delete_to_end_of_line);
284 cx.add_action(Editor::cut_to_end_of_line);
285 cx.add_action(Editor::duplicate_line);
286 cx.add_action(Editor::move_line_up);
287 cx.add_action(Editor::move_line_down);
288 cx.add_action(Editor::cut);
289 cx.add_action(Editor::copy);
290 cx.add_action(Editor::paste);
291 cx.add_action(Editor::undo);
292 cx.add_action(Editor::redo);
293 cx.add_action(Editor::move_up);
294 cx.add_action(Editor::move_down);
295 cx.add_action(Editor::move_left);
296 cx.add_action(Editor::move_right);
297 cx.add_action(Editor::move_to_previous_word_boundary);
298 cx.add_action(Editor::move_to_next_word_boundary);
299 cx.add_action(Editor::move_to_beginning_of_line);
300 cx.add_action(Editor::move_to_end_of_line);
301 cx.add_action(Editor::move_to_beginning);
302 cx.add_action(Editor::move_to_end);
303 cx.add_action(Editor::select_up);
304 cx.add_action(Editor::select_down);
305 cx.add_action(Editor::select_left);
306 cx.add_action(Editor::select_right);
307 cx.add_action(Editor::select_to_previous_word_boundary);
308 cx.add_action(Editor::select_to_next_word_boundary);
309 cx.add_action(Editor::select_to_beginning_of_line);
310 cx.add_action(Editor::select_to_end_of_line);
311 cx.add_action(Editor::select_to_beginning);
312 cx.add_action(Editor::select_to_end);
313 cx.add_action(Editor::select_all);
314 cx.add_action(Editor::select_line);
315 cx.add_action(Editor::split_selection_into_lines);
316 cx.add_action(Editor::add_selection_above);
317 cx.add_action(Editor::add_selection_below);
318 cx.add_action(Editor::select_next);
319 cx.add_action(Editor::toggle_comments);
320 cx.add_action(Editor::select_larger_syntax_node);
321 cx.add_action(Editor::select_smaller_syntax_node);
322 cx.add_action(Editor::move_to_enclosing_bracket);
323 cx.add_action(Editor::show_next_diagnostic);
324 cx.add_action(Editor::go_to_definition);
325 cx.add_action(Editor::page_up);
326 cx.add_action(Editor::page_down);
327 cx.add_action(Editor::fold);
328 cx.add_action(Editor::unfold);
329 cx.add_action(Editor::fold_selected_ranges);
330 cx.add_action(Editor::show_completions);
331 cx.add_action(Editor::toggle_code_actions);
332 cx.add_action(Editor::open_excerpts);
333 cx.add_async_action(Editor::confirm_completion);
334 cx.add_async_action(Editor::confirm_code_action);
335 cx.add_async_action(Editor::rename);
336 cx.add_async_action(Editor::confirm_rename);
337 cx.add_async_action(Editor::find_all_references);
338}
339
340trait SelectionExt {
341 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize>;
342 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point>;
343 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint>;
344 fn spanned_rows(&self, include_end_if_at_line_start: bool, map: &DisplaySnapshot)
345 -> Range<u32>;
346}
347
348trait InvalidationRegion {
349 fn ranges(&self) -> &[Range<Anchor>];
350}
351
352#[derive(Clone, Debug)]
353pub enum SelectPhase {
354 Begin {
355 position: DisplayPoint,
356 add: bool,
357 click_count: usize,
358 },
359 BeginColumnar {
360 position: DisplayPoint,
361 overshoot: u32,
362 },
363 Extend {
364 position: DisplayPoint,
365 click_count: usize,
366 },
367 Update {
368 position: DisplayPoint,
369 overshoot: u32,
370 scroll_position: Vector2F,
371 },
372 End,
373}
374
375#[derive(Clone, Debug)]
376pub enum SelectMode {
377 Character,
378 Word(Range<Anchor>),
379 Line(Range<Anchor>),
380 All,
381}
382
383#[derive(PartialEq, Eq)]
384pub enum Autoscroll {
385 Fit,
386 Center,
387 Newest,
388}
389
390#[derive(Copy, Clone, PartialEq, Eq)]
391pub enum EditorMode {
392 SingleLine,
393 AutoHeight { max_lines: usize },
394 Full,
395}
396
397#[derive(Clone)]
398pub enum SoftWrap {
399 None,
400 EditorWidth,
401 Column(u32),
402}
403
404#[derive(Clone)]
405pub struct EditorStyle {
406 pub text: TextStyle,
407 pub placeholder_text: Option<TextStyle>,
408 pub theme: theme::Editor,
409}
410
411type CompletionId = usize;
412
413pub type GetFieldEditorTheme = fn(&theme::Theme) -> theme::FieldEditor;
414
415type OverrideTextStyle = dyn Fn(&EditorStyle) -> Option<HighlightStyle>;
416
417pub struct Editor {
418 handle: WeakViewHandle<Self>,
419 buffer: ModelHandle<MultiBuffer>,
420 display_map: ModelHandle<DisplayMap>,
421 next_selection_id: usize,
422 selections: Arc<[Selection<Anchor>]>,
423 pending_selection: Option<PendingSelection>,
424 columnar_selection_tail: Option<Anchor>,
425 add_selections_state: Option<AddSelectionsState>,
426 select_next_state: Option<SelectNextState>,
427 selection_history:
428 HashMap<TransactionId, (Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)>,
429 autoclose_stack: InvalidationStack<BracketPairState>,
430 snippet_stack: InvalidationStack<SnippetState>,
431 select_larger_syntax_node_stack: Vec<Box<[Selection<usize>]>>,
432 active_diagnostics: Option<ActiveDiagnosticGroup>,
433 scroll_position: Vector2F,
434 scroll_top_anchor: Option<Anchor>,
435 autoscroll_request: Option<Autoscroll>,
436 settings: watch::Receiver<Settings>,
437 soft_wrap_mode_override: Option<settings::SoftWrap>,
438 get_field_editor_theme: Option<GetFieldEditorTheme>,
439 override_text_style: Option<Box<OverrideTextStyle>>,
440 project: Option<ModelHandle<Project>>,
441 focused: bool,
442 show_local_cursors: bool,
443 blink_epoch: usize,
444 blinking_paused: bool,
445 mode: EditorMode,
446 vertical_scroll_margin: f32,
447 placeholder_text: Option<Arc<str>>,
448 highlighted_rows: Option<Range<u32>>,
449 background_highlights: BTreeMap<TypeId, (Color, Vec<Range<Anchor>>)>,
450 nav_history: Option<ItemNavHistory>,
451 context_menu: Option<ContextMenu>,
452 completion_tasks: Vec<(CompletionId, Task<Option<()>>)>,
453 next_completion_id: CompletionId,
454 available_code_actions: Option<(ModelHandle<Buffer>, Arc<[CodeAction]>)>,
455 code_actions_task: Option<Task<()>>,
456 document_highlights_task: Option<Task<()>>,
457 pending_rename: Option<RenameState>,
458 searchable: bool,
459 cursor_shape: CursorShape,
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: Option<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(
620 &completion.label,
621 style.text.color,
622 &style.syntax,
623 ),
624 &mat.positions,
625 ))
626 .contained()
627 .with_style(item_style)
628 .boxed()
629 },
630 )
631 .with_cursor_style(CursorStyle::PointingHand)
632 .on_mouse_down(move |cx| {
633 cx.dispatch_action(ConfirmCompletion(Some(item_ix)));
634 })
635 .boxed(),
636 );
637 }
638 })
639 .with_width_from_item(
640 self.matches
641 .iter()
642 .enumerate()
643 .max_by_key(|(_, mat)| {
644 self.completions[mat.candidate_id]
645 .label
646 .text
647 .chars()
648 .count()
649 })
650 .map(|(ix, _)| ix),
651 )
652 .contained()
653 .with_style(container_style)
654 .boxed()
655 }
656
657 pub async fn filter(&mut self, query: Option<&str>, executor: Arc<executor::Background>) {
658 let mut matches = if let Some(query) = query {
659 fuzzy::match_strings(
660 &self.match_candidates,
661 query,
662 false,
663 100,
664 &Default::default(),
665 executor,
666 )
667 .await
668 } else {
669 self.match_candidates
670 .iter()
671 .enumerate()
672 .map(|(candidate_id, candidate)| StringMatch {
673 candidate_id,
674 score: Default::default(),
675 positions: Default::default(),
676 string: candidate.string.clone(),
677 })
678 .collect()
679 };
680 matches.sort_unstable_by_key(|mat| {
681 (
682 Reverse(OrderedFloat(mat.score)),
683 self.completions[mat.candidate_id].sort_key(),
684 )
685 });
686
687 for mat in &mut matches {
688 let filter_start = self.completions[mat.candidate_id].label.filter_range.start;
689 for position in &mut mat.positions {
690 *position += filter_start;
691 }
692 }
693
694 self.matches = matches.into();
695 }
696}
697
698#[derive(Clone)]
699struct CodeActionsMenu {
700 actions: Arc<[CodeAction]>,
701 buffer: ModelHandle<Buffer>,
702 selected_item: usize,
703 list: UniformListState,
704 deployed_from_indicator: bool,
705}
706
707impl CodeActionsMenu {
708 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) {
709 if self.selected_item > 0 {
710 self.selected_item -= 1;
711 cx.notify()
712 }
713 }
714
715 fn select_next(&mut self, cx: &mut ViewContext<Editor>) {
716 if self.selected_item + 1 < self.actions.len() {
717 self.selected_item += 1;
718 cx.notify()
719 }
720 }
721
722 fn visible(&self) -> bool {
723 !self.actions.is_empty()
724 }
725
726 fn render(
727 &self,
728 mut cursor_position: DisplayPoint,
729 style: EditorStyle,
730 ) -> (DisplayPoint, ElementBox) {
731 enum ActionTag {}
732
733 let container_style = style.autocomplete.container;
734 let actions = self.actions.clone();
735 let selected_item = self.selected_item;
736 let element =
737 UniformList::new(self.list.clone(), actions.len(), move |range, items, cx| {
738 let start_ix = range.start;
739 for (ix, action) in actions[range].iter().enumerate() {
740 let item_ix = start_ix + ix;
741 items.push(
742 MouseEventHandler::new::<ActionTag, _, _>(item_ix, cx, |state, _| {
743 let item_style = if item_ix == selected_item {
744 style.autocomplete.selected_item
745 } else if state.hovered {
746 style.autocomplete.hovered_item
747 } else {
748 style.autocomplete.item
749 };
750
751 Text::new(action.lsp_action.title.clone(), style.text.clone())
752 .with_soft_wrap(false)
753 .contained()
754 .with_style(item_style)
755 .boxed()
756 })
757 .with_cursor_style(CursorStyle::PointingHand)
758 .on_mouse_down(move |cx| {
759 cx.dispatch_action(ConfirmCodeAction(Some(item_ix)));
760 })
761 .boxed(),
762 );
763 }
764 })
765 .with_width_from_item(
766 self.actions
767 .iter()
768 .enumerate()
769 .max_by_key(|(_, action)| action.lsp_action.title.chars().count())
770 .map(|(ix, _)| ix),
771 )
772 .contained()
773 .with_style(container_style)
774 .boxed();
775
776 if self.deployed_from_indicator {
777 *cursor_position.column_mut() = 0;
778 }
779
780 (cursor_position, element)
781 }
782}
783
784#[derive(Debug)]
785struct ActiveDiagnosticGroup {
786 primary_range: Range<Anchor>,
787 primary_message: String,
788 blocks: HashMap<BlockId, Diagnostic>,
789 is_valid: bool,
790}
791
792#[derive(Serialize, Deserialize)]
793struct ClipboardSelection {
794 len: usize,
795 is_entire_line: bool,
796}
797
798pub struct NavigationData {
799 anchor: Anchor,
800 offset: usize,
801}
802
803impl Editor {
804 pub fn single_line(
805 settings: watch::Receiver<Settings>,
806 field_editor_style: Option<GetFieldEditorTheme>,
807 cx: &mut ViewContext<Self>,
808 ) -> Self {
809 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
810 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
811 Self::new(
812 EditorMode::SingleLine,
813 buffer,
814 None,
815 settings,
816 field_editor_style,
817 cx,
818 )
819 }
820
821 pub fn auto_height(
822 max_lines: usize,
823 settings: watch::Receiver<Settings>,
824 field_editor_style: Option<GetFieldEditorTheme>,
825 cx: &mut ViewContext<Self>,
826 ) -> Self {
827 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
828 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
829 Self::new(
830 EditorMode::AutoHeight { max_lines },
831 buffer,
832 None,
833 settings,
834 field_editor_style,
835 cx,
836 )
837 }
838
839 pub fn for_buffer(
840 buffer: ModelHandle<MultiBuffer>,
841 project: Option<ModelHandle<Project>>,
842 settings: watch::Receiver<Settings>,
843 cx: &mut ViewContext<Self>,
844 ) -> Self {
845 Self::new(EditorMode::Full, buffer, project, settings, None, cx)
846 }
847
848 pub fn clone(&self, nav_history: ItemNavHistory, cx: &mut ViewContext<Self>) -> Self {
849 let mut clone = Self::new(
850 self.mode,
851 self.buffer.clone(),
852 self.project.clone(),
853 self.settings.clone(),
854 self.get_field_editor_theme,
855 cx,
856 );
857 clone.scroll_position = self.scroll_position;
858 clone.scroll_top_anchor = self.scroll_top_anchor.clone();
859 clone.nav_history = Some(nav_history);
860 clone.searchable = self.searchable;
861 clone
862 }
863
864 fn new(
865 mode: EditorMode,
866 buffer: ModelHandle<MultiBuffer>,
867 project: Option<ModelHandle<Project>>,
868 settings: watch::Receiver<Settings>,
869 get_field_editor_theme: Option<GetFieldEditorTheme>,
870 cx: &mut ViewContext<Self>,
871 ) -> Self {
872 let display_map = cx.add_model(|cx| {
873 let settings = settings.borrow();
874 let style = build_style(&*settings, get_field_editor_theme, None, cx);
875 DisplayMap::new(
876 buffer.clone(),
877 settings.tab_size,
878 style.text.font_id,
879 style.text.font_size,
880 None,
881 2,
882 1,
883 cx,
884 )
885 });
886 cx.observe(&buffer, Self::on_buffer_changed).detach();
887 cx.subscribe(&buffer, Self::on_buffer_event).detach();
888 cx.observe(&display_map, Self::on_display_map_changed)
889 .detach();
890
891 let mut this = Self {
892 handle: cx.weak_handle(),
893 buffer,
894 display_map,
895 selections: Arc::from([]),
896 pending_selection: Some(PendingSelection {
897 selection: Selection {
898 id: 0,
899 start: Anchor::min(),
900 end: Anchor::min(),
901 reversed: false,
902 goal: SelectionGoal::None,
903 },
904 mode: SelectMode::Character,
905 }),
906 columnar_selection_tail: None,
907 next_selection_id: 1,
908 add_selections_state: None,
909 select_next_state: None,
910 selection_history: Default::default(),
911 autoclose_stack: Default::default(),
912 snippet_stack: Default::default(),
913 select_larger_syntax_node_stack: Vec::new(),
914 active_diagnostics: None,
915 settings,
916 soft_wrap_mode_override: None,
917 get_field_editor_theme,
918 project,
919 scroll_position: Vector2F::zero(),
920 scroll_top_anchor: None,
921 autoscroll_request: None,
922 focused: false,
923 show_local_cursors: false,
924 blink_epoch: 0,
925 blinking_paused: false,
926 mode,
927 vertical_scroll_margin: 3.0,
928 placeholder_text: None,
929 highlighted_rows: None,
930 background_highlights: Default::default(),
931 nav_history: None,
932 context_menu: None,
933 completion_tasks: Default::default(),
934 next_completion_id: 0,
935 available_code_actions: Default::default(),
936 code_actions_task: Default::default(),
937 document_highlights_task: Default::default(),
938 pending_rename: Default::default(),
939 searchable: true,
940 override_text_style: None,
941 cursor_shape: Default::default(),
942 };
943 this.end_selection(cx);
944 this
945 }
946
947 pub fn open_new(
948 workspace: &mut Workspace,
949 _: &workspace::OpenNew,
950 cx: &mut ViewContext<Workspace>,
951 ) {
952 let project = workspace.project();
953 if project.read(cx).is_remote() {
954 cx.propagate_action();
955 } else if let Some(buffer) = project
956 .update(cx, |project, cx| project.create_buffer(cx))
957 .log_err()
958 {
959 workspace.open_item(BufferItemHandle(buffer), cx);
960 }
961 }
962
963 pub fn replica_id(&self, cx: &AppContext) -> ReplicaId {
964 self.buffer.read(cx).replica_id()
965 }
966
967 pub fn buffer(&self) -> &ModelHandle<MultiBuffer> {
968 &self.buffer
969 }
970
971 pub fn title(&self, cx: &AppContext) -> String {
972 self.buffer().read(cx).title(cx)
973 }
974
975 pub fn snapshot(&mut self, cx: &mut MutableAppContext) -> EditorSnapshot {
976 EditorSnapshot {
977 mode: self.mode,
978 display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
979 scroll_position: self.scroll_position,
980 scroll_top_anchor: self.scroll_top_anchor.clone(),
981 placeholder_text: self.placeholder_text.clone(),
982 is_focused: self
983 .handle
984 .upgrade(cx)
985 .map_or(false, |handle| handle.is_focused(cx)),
986 }
987 }
988
989 pub fn language<'a>(&self, cx: &'a AppContext) -> Option<&'a Arc<Language>> {
990 self.buffer.read(cx).language(cx)
991 }
992
993 fn style(&self, cx: &AppContext) -> EditorStyle {
994 build_style(
995 &*self.settings.borrow(),
996 self.get_field_editor_theme,
997 self.override_text_style.as_deref(),
998 cx,
999 )
1000 }
1001
1002 pub fn set_placeholder_text(
1003 &mut self,
1004 placeholder_text: impl Into<Arc<str>>,
1005 cx: &mut ViewContext<Self>,
1006 ) {
1007 self.placeholder_text = Some(placeholder_text.into());
1008 cx.notify();
1009 }
1010
1011 pub fn set_vertical_scroll_margin(&mut self, margin_rows: usize, cx: &mut ViewContext<Self>) {
1012 self.vertical_scroll_margin = margin_rows as f32;
1013 cx.notify();
1014 }
1015
1016 pub fn set_scroll_position(&mut self, scroll_position: Vector2F, cx: &mut ViewContext<Self>) {
1017 let map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1018
1019 if scroll_position.y() == 0. {
1020 self.scroll_top_anchor = None;
1021 self.scroll_position = scroll_position;
1022 } else {
1023 let scroll_top_buffer_offset =
1024 DisplayPoint::new(scroll_position.y() as u32, 0).to_offset(&map, Bias::Right);
1025 let anchor = map
1026 .buffer_snapshot
1027 .anchor_at(scroll_top_buffer_offset, Bias::Right);
1028 self.scroll_position = vec2f(
1029 scroll_position.x(),
1030 scroll_position.y() - anchor.to_display_point(&map).row() as f32,
1031 );
1032 self.scroll_top_anchor = Some(anchor);
1033 }
1034
1035 cx.notify();
1036 }
1037
1038 pub fn set_cursor_shape(&mut self, cursor_shape: CursorShape, cx: &mut ViewContext<Self>) {
1039 self.cursor_shape = cursor_shape;
1040 cx.notify();
1041 }
1042
1043 pub fn scroll_position(&self, cx: &mut ViewContext<Self>) -> Vector2F {
1044 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1045 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor)
1046 }
1047
1048 pub fn clamp_scroll_left(&mut self, max: f32) -> bool {
1049 if max < self.scroll_position.x() {
1050 self.scroll_position.set_x(max);
1051 true
1052 } else {
1053 false
1054 }
1055 }
1056
1057 pub fn autoscroll_vertically(
1058 &mut self,
1059 viewport_height: f32,
1060 line_height: f32,
1061 cx: &mut ViewContext<Self>,
1062 ) -> bool {
1063 let visible_lines = viewport_height / line_height;
1064 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1065 let mut scroll_position =
1066 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor);
1067 let max_scroll_top = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
1068 (display_map.max_point().row() as f32 - visible_lines + 1.).max(0.)
1069 } else {
1070 display_map.max_point().row().saturating_sub(1) as f32
1071 };
1072 if scroll_position.y() > max_scroll_top {
1073 scroll_position.set_y(max_scroll_top);
1074 self.set_scroll_position(scroll_position, cx);
1075 }
1076
1077 let autoscroll = if let Some(autoscroll) = self.autoscroll_request.take() {
1078 autoscroll
1079 } else {
1080 return false;
1081 };
1082
1083 let first_cursor_top;
1084 let last_cursor_bottom;
1085 if let Some(highlighted_rows) = &self.highlighted_rows {
1086 first_cursor_top = highlighted_rows.start as f32;
1087 last_cursor_bottom = first_cursor_top + 1.;
1088 } else if autoscroll == Autoscroll::Newest {
1089 let newest_selection =
1090 self.newest_selection_with_snapshot::<Point>(&display_map.buffer_snapshot);
1091 first_cursor_top = newest_selection.head().to_display_point(&display_map).row() as f32;
1092 last_cursor_bottom = first_cursor_top + 1.;
1093 } else {
1094 let selections = self.local_selections::<Point>(cx);
1095 first_cursor_top = selections
1096 .first()
1097 .unwrap()
1098 .head()
1099 .to_display_point(&display_map)
1100 .row() as f32;
1101 last_cursor_bottom = selections
1102 .last()
1103 .unwrap()
1104 .head()
1105 .to_display_point(&display_map)
1106 .row() as f32
1107 + 1.0;
1108 }
1109
1110 let margin = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
1111 0.
1112 } else {
1113 ((visible_lines - (last_cursor_bottom - first_cursor_top)) / 2.0).floor()
1114 };
1115 if margin < 0.0 {
1116 return false;
1117 }
1118
1119 match autoscroll {
1120 Autoscroll::Fit | Autoscroll::Newest => {
1121 let margin = margin.min(self.vertical_scroll_margin);
1122 let target_top = (first_cursor_top - margin).max(0.0);
1123 let target_bottom = last_cursor_bottom + margin;
1124 let start_row = scroll_position.y();
1125 let end_row = start_row + visible_lines;
1126
1127 if target_top < start_row {
1128 scroll_position.set_y(target_top);
1129 self.set_scroll_position(scroll_position, cx);
1130 } else if target_bottom >= end_row {
1131 scroll_position.set_y(target_bottom - visible_lines);
1132 self.set_scroll_position(scroll_position, cx);
1133 }
1134 }
1135 Autoscroll::Center => {
1136 scroll_position.set_y((first_cursor_top - margin).max(0.0));
1137 self.set_scroll_position(scroll_position, cx);
1138 }
1139 }
1140
1141 true
1142 }
1143
1144 pub fn autoscroll_horizontally(
1145 &mut self,
1146 start_row: u32,
1147 viewport_width: f32,
1148 scroll_width: f32,
1149 max_glyph_width: f32,
1150 layouts: &[text_layout::Line],
1151 cx: &mut ViewContext<Self>,
1152 ) -> bool {
1153 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1154 let selections = self.local_selections::<Point>(cx);
1155
1156 let mut target_left;
1157 let mut target_right;
1158
1159 if self.highlighted_rows.is_some() {
1160 target_left = 0.0_f32;
1161 target_right = 0.0_f32;
1162 } else {
1163 target_left = std::f32::INFINITY;
1164 target_right = 0.0_f32;
1165 for selection in selections {
1166 let head = selection.head().to_display_point(&display_map);
1167 if head.row() >= start_row && head.row() < start_row + layouts.len() as u32 {
1168 let start_column = head.column().saturating_sub(3);
1169 let end_column = cmp::min(display_map.line_len(head.row()), head.column() + 3);
1170 target_left = target_left.min(
1171 layouts[(head.row() - start_row) as usize]
1172 .x_for_index(start_column as usize),
1173 );
1174 target_right = target_right.max(
1175 layouts[(head.row() - start_row) as usize].x_for_index(end_column as usize)
1176 + max_glyph_width,
1177 );
1178 }
1179 }
1180 }
1181
1182 target_right = target_right.min(scroll_width);
1183
1184 if target_right - target_left > viewport_width {
1185 return false;
1186 }
1187
1188 let scroll_left = self.scroll_position.x() * max_glyph_width;
1189 let scroll_right = scroll_left + viewport_width;
1190
1191 if target_left < scroll_left {
1192 self.scroll_position.set_x(target_left / max_glyph_width);
1193 true
1194 } else if target_right > scroll_right {
1195 self.scroll_position
1196 .set_x((target_right - viewport_width) / max_glyph_width);
1197 true
1198 } else {
1199 false
1200 }
1201 }
1202
1203 fn select(&mut self, Select(phase): &Select, cx: &mut ViewContext<Self>) {
1204 self.hide_context_menu(cx);
1205
1206 match phase {
1207 SelectPhase::Begin {
1208 position,
1209 add,
1210 click_count,
1211 } => self.begin_selection(*position, *add, *click_count, cx),
1212 SelectPhase::BeginColumnar {
1213 position,
1214 overshoot,
1215 } => self.begin_columnar_selection(*position, *overshoot, cx),
1216 SelectPhase::Extend {
1217 position,
1218 click_count,
1219 } => self.extend_selection(*position, *click_count, cx),
1220 SelectPhase::Update {
1221 position,
1222 overshoot,
1223 scroll_position,
1224 } => self.update_selection(*position, *overshoot, *scroll_position, cx),
1225 SelectPhase::End => self.end_selection(cx),
1226 }
1227 }
1228
1229 fn extend_selection(
1230 &mut self,
1231 position: DisplayPoint,
1232 click_count: usize,
1233 cx: &mut ViewContext<Self>,
1234 ) {
1235 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1236 let tail = self
1237 .newest_selection_with_snapshot::<usize>(&display_map.buffer_snapshot)
1238 .tail();
1239 self.begin_selection(position, false, click_count, cx);
1240
1241 let position = position.to_offset(&display_map, Bias::Left);
1242 let tail_anchor = display_map.buffer_snapshot.anchor_before(tail);
1243 let mut pending = self.pending_selection.clone().unwrap();
1244
1245 if position >= tail {
1246 pending.selection.start = tail_anchor.clone();
1247 } else {
1248 pending.selection.end = tail_anchor.clone();
1249 pending.selection.reversed = true;
1250 }
1251
1252 match &mut pending.mode {
1253 SelectMode::Word(range) | SelectMode::Line(range) => {
1254 *range = tail_anchor.clone()..tail_anchor
1255 }
1256 _ => {}
1257 }
1258
1259 self.set_selections(self.selections.clone(), Some(pending), cx);
1260 }
1261
1262 fn begin_selection(
1263 &mut self,
1264 position: DisplayPoint,
1265 add: bool,
1266 click_count: usize,
1267 cx: &mut ViewContext<Self>,
1268 ) {
1269 if !self.focused {
1270 cx.focus_self();
1271 cx.emit(Event::Activate);
1272 }
1273
1274 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1275 let buffer = &display_map.buffer_snapshot;
1276 let newest_selection = self.newest_anchor_selection().clone();
1277
1278 let start;
1279 let end;
1280 let mode;
1281 match click_count {
1282 1 => {
1283 start = buffer.anchor_before(position.to_point(&display_map));
1284 end = start.clone();
1285 mode = SelectMode::Character;
1286 }
1287 2 => {
1288 let range = movement::surrounding_word(&display_map, position);
1289 start = buffer.anchor_before(range.start.to_point(&display_map));
1290 end = buffer.anchor_before(range.end.to_point(&display_map));
1291 mode = SelectMode::Word(start.clone()..end.clone());
1292 }
1293 3 => {
1294 let position = display_map
1295 .clip_point(position, Bias::Left)
1296 .to_point(&display_map);
1297 let line_start = display_map.prev_line_boundary(position).0;
1298 let next_line_start = buffer.clip_point(
1299 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1300 Bias::Left,
1301 );
1302 start = buffer.anchor_before(line_start);
1303 end = buffer.anchor_before(next_line_start);
1304 mode = SelectMode::Line(start.clone()..end.clone());
1305 }
1306 _ => {
1307 start = buffer.anchor_before(0);
1308 end = buffer.anchor_before(buffer.len());
1309 mode = SelectMode::All;
1310 }
1311 }
1312
1313 self.push_to_nav_history(newest_selection.head(), Some(end.to_point(&buffer)), cx);
1314
1315 let selection = Selection {
1316 id: post_inc(&mut self.next_selection_id),
1317 start,
1318 end,
1319 reversed: false,
1320 goal: SelectionGoal::None,
1321 };
1322
1323 let mut selections;
1324 if add {
1325 selections = self.selections.clone();
1326 // Remove the newest selection if it was added due to a previous mouse up
1327 // within this multi-click.
1328 if click_count > 1 {
1329 selections = self
1330 .selections
1331 .iter()
1332 .filter(|selection| selection.id != newest_selection.id)
1333 .cloned()
1334 .collect();
1335 }
1336 } else {
1337 selections = Arc::from([]);
1338 }
1339 self.set_selections(selections, Some(PendingSelection { selection, mode }), cx);
1340
1341 cx.notify();
1342 }
1343
1344 fn begin_columnar_selection(
1345 &mut self,
1346 position: DisplayPoint,
1347 overshoot: u32,
1348 cx: &mut ViewContext<Self>,
1349 ) {
1350 if !self.focused {
1351 cx.focus_self();
1352 cx.emit(Event::Activate);
1353 }
1354
1355 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1356 let tail = self
1357 .newest_selection_with_snapshot::<Point>(&display_map.buffer_snapshot)
1358 .tail();
1359 self.columnar_selection_tail = Some(display_map.buffer_snapshot.anchor_before(tail));
1360
1361 self.select_columns(
1362 tail.to_display_point(&display_map),
1363 position,
1364 overshoot,
1365 &display_map,
1366 cx,
1367 );
1368 }
1369
1370 fn update_selection(
1371 &mut self,
1372 position: DisplayPoint,
1373 overshoot: u32,
1374 scroll_position: Vector2F,
1375 cx: &mut ViewContext<Self>,
1376 ) {
1377 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1378
1379 if let Some(tail) = self.columnar_selection_tail.as_ref() {
1380 let tail = tail.to_display_point(&display_map);
1381 self.select_columns(tail, position, overshoot, &display_map, cx);
1382 } else if let Some(mut pending) = self.pending_selection.clone() {
1383 let buffer = self.buffer.read(cx).snapshot(cx);
1384 let head;
1385 let tail;
1386 match &pending.mode {
1387 SelectMode::Character => {
1388 head = position.to_point(&display_map);
1389 tail = pending.selection.tail().to_point(&buffer);
1390 }
1391 SelectMode::Word(original_range) => {
1392 let original_display_range = original_range.start.to_display_point(&display_map)
1393 ..original_range.end.to_display_point(&display_map);
1394 let original_buffer_range = original_display_range.start.to_point(&display_map)
1395 ..original_display_range.end.to_point(&display_map);
1396 if movement::is_inside_word(&display_map, position)
1397 || original_display_range.contains(&position)
1398 {
1399 let word_range = movement::surrounding_word(&display_map, position);
1400 if word_range.start < original_display_range.start {
1401 head = word_range.start.to_point(&display_map);
1402 } else {
1403 head = word_range.end.to_point(&display_map);
1404 }
1405 } else {
1406 head = position.to_point(&display_map);
1407 }
1408
1409 if head <= original_buffer_range.start {
1410 tail = original_buffer_range.end;
1411 } else {
1412 tail = original_buffer_range.start;
1413 }
1414 }
1415 SelectMode::Line(original_range) => {
1416 let original_range = original_range.to_point(&display_map.buffer_snapshot);
1417
1418 let position = display_map
1419 .clip_point(position, Bias::Left)
1420 .to_point(&display_map);
1421 let line_start = display_map.prev_line_boundary(position).0;
1422 let next_line_start = buffer.clip_point(
1423 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1424 Bias::Left,
1425 );
1426
1427 if line_start < original_range.start {
1428 head = line_start
1429 } else {
1430 head = next_line_start
1431 }
1432
1433 if head <= original_range.start {
1434 tail = original_range.end;
1435 } else {
1436 tail = original_range.start;
1437 }
1438 }
1439 SelectMode::All => {
1440 return;
1441 }
1442 };
1443
1444 if head < tail {
1445 pending.selection.start = buffer.anchor_before(head);
1446 pending.selection.end = buffer.anchor_before(tail);
1447 pending.selection.reversed = true;
1448 } else {
1449 pending.selection.start = buffer.anchor_before(tail);
1450 pending.selection.end = buffer.anchor_before(head);
1451 pending.selection.reversed = false;
1452 }
1453 self.set_selections(self.selections.clone(), Some(pending), cx);
1454 } else {
1455 log::error!("update_selection dispatched with no pending selection");
1456 return;
1457 }
1458
1459 self.set_scroll_position(scroll_position, cx);
1460 cx.notify();
1461 }
1462
1463 fn end_selection(&mut self, cx: &mut ViewContext<Self>) {
1464 self.columnar_selection_tail.take();
1465 if self.pending_selection.is_some() {
1466 let selections = self.local_selections::<usize>(cx);
1467 self.update_selections(selections, None, cx);
1468 }
1469 }
1470
1471 fn select_columns(
1472 &mut self,
1473 tail: DisplayPoint,
1474 head: DisplayPoint,
1475 overshoot: u32,
1476 display_map: &DisplaySnapshot,
1477 cx: &mut ViewContext<Self>,
1478 ) {
1479 let start_row = cmp::min(tail.row(), head.row());
1480 let end_row = cmp::max(tail.row(), head.row());
1481 let start_column = cmp::min(tail.column(), head.column() + overshoot);
1482 let end_column = cmp::max(tail.column(), head.column() + overshoot);
1483 let reversed = start_column < tail.column();
1484
1485 let selections = (start_row..=end_row)
1486 .filter_map(|row| {
1487 if start_column <= display_map.line_len(row) && !display_map.is_block_line(row) {
1488 let start = display_map
1489 .clip_point(DisplayPoint::new(row, start_column), Bias::Left)
1490 .to_point(&display_map);
1491 let end = display_map
1492 .clip_point(DisplayPoint::new(row, end_column), Bias::Right)
1493 .to_point(&display_map);
1494 Some(Selection {
1495 id: post_inc(&mut self.next_selection_id),
1496 start,
1497 end,
1498 reversed,
1499 goal: SelectionGoal::None,
1500 })
1501 } else {
1502 None
1503 }
1504 })
1505 .collect::<Vec<_>>();
1506
1507 self.update_selections(selections, None, cx);
1508 cx.notify();
1509 }
1510
1511 pub fn is_selecting(&self) -> bool {
1512 self.pending_selection.is_some() || self.columnar_selection_tail.is_some()
1513 }
1514
1515 pub fn cancel(&mut self, _: &Cancel, cx: &mut ViewContext<Self>) {
1516 if self.take_rename(cx).is_some() {
1517 return;
1518 }
1519
1520 if self.hide_context_menu(cx).is_some() {
1521 return;
1522 }
1523
1524 if self.snippet_stack.pop().is_some() {
1525 return;
1526 }
1527
1528 if self.mode != EditorMode::Full {
1529 cx.propagate_action();
1530 return;
1531 }
1532
1533 if self.active_diagnostics.is_some() {
1534 self.dismiss_diagnostics(cx);
1535 } else if let Some(pending) = self.pending_selection.clone() {
1536 let mut selections = self.selections.clone();
1537 if selections.is_empty() {
1538 selections = Arc::from([pending.selection]);
1539 }
1540 self.set_selections(selections, None, cx);
1541 self.request_autoscroll(Autoscroll::Fit, cx);
1542 } else {
1543 let mut oldest_selection = self.oldest_selection::<usize>(&cx);
1544 if self.selection_count() == 1 {
1545 if oldest_selection.is_empty() {
1546 cx.propagate_action();
1547 return;
1548 }
1549
1550 oldest_selection.start = oldest_selection.head().clone();
1551 oldest_selection.end = oldest_selection.head().clone();
1552 }
1553 self.update_selections(vec![oldest_selection], Some(Autoscroll::Fit), cx);
1554 }
1555 }
1556
1557 #[cfg(any(test, feature = "test-support"))]
1558 pub fn selected_ranges<D: TextDimension + Ord + Sub<D, Output = D>>(
1559 &self,
1560 cx: &mut MutableAppContext,
1561 ) -> Vec<Range<D>> {
1562 self.local_selections::<D>(cx)
1563 .iter()
1564 .map(|s| {
1565 if s.reversed {
1566 s.end.clone()..s.start.clone()
1567 } else {
1568 s.start.clone()..s.end.clone()
1569 }
1570 })
1571 .collect()
1572 }
1573
1574 #[cfg(any(test, feature = "test-support"))]
1575 pub fn selected_display_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
1576 let display_map = self
1577 .display_map
1578 .update(cx, |display_map, cx| display_map.snapshot(cx));
1579 self.selections
1580 .iter()
1581 .chain(
1582 self.pending_selection
1583 .as_ref()
1584 .map(|pending| &pending.selection),
1585 )
1586 .map(|s| {
1587 if s.reversed {
1588 s.end.to_display_point(&display_map)..s.start.to_display_point(&display_map)
1589 } else {
1590 s.start.to_display_point(&display_map)..s.end.to_display_point(&display_map)
1591 }
1592 })
1593 .collect()
1594 }
1595
1596 pub fn select_ranges<I, T>(
1597 &mut self,
1598 ranges: I,
1599 autoscroll: Option<Autoscroll>,
1600 cx: &mut ViewContext<Self>,
1601 ) where
1602 I: IntoIterator<Item = Range<T>>,
1603 T: ToOffset,
1604 {
1605 let buffer = self.buffer.read(cx).snapshot(cx);
1606 let selections = ranges
1607 .into_iter()
1608 .map(|range| {
1609 let mut start = range.start.to_offset(&buffer);
1610 let mut end = range.end.to_offset(&buffer);
1611 let reversed = if start > end {
1612 mem::swap(&mut start, &mut end);
1613 true
1614 } else {
1615 false
1616 };
1617 Selection {
1618 id: post_inc(&mut self.next_selection_id),
1619 start,
1620 end,
1621 reversed,
1622 goal: SelectionGoal::None,
1623 }
1624 })
1625 .collect::<Vec<_>>();
1626 self.update_selections(selections, autoscroll, cx);
1627 }
1628
1629 #[cfg(any(test, feature = "test-support"))]
1630 pub fn select_display_ranges<'a, T>(&mut self, ranges: T, cx: &mut ViewContext<Self>)
1631 where
1632 T: IntoIterator<Item = &'a Range<DisplayPoint>>,
1633 {
1634 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1635 let selections = ranges
1636 .into_iter()
1637 .map(|range| {
1638 let mut start = range.start;
1639 let mut end = range.end;
1640 let reversed = if start > end {
1641 mem::swap(&mut start, &mut end);
1642 true
1643 } else {
1644 false
1645 };
1646 Selection {
1647 id: post_inc(&mut self.next_selection_id),
1648 start: start.to_point(&display_map),
1649 end: end.to_point(&display_map),
1650 reversed,
1651 goal: SelectionGoal::None,
1652 }
1653 })
1654 .collect();
1655 self.update_selections(selections, None, cx);
1656 }
1657
1658 pub fn handle_input(&mut self, action: &Input, cx: &mut ViewContext<Self>) {
1659 let text = action.0.as_ref();
1660 if !self.skip_autoclose_end(text, cx) {
1661 self.start_transaction(cx);
1662 if !self.surround_with_bracket_pair(text, cx) {
1663 self.insert(text, cx);
1664 self.autoclose_bracket_pairs(cx);
1665 }
1666 self.end_transaction(cx);
1667 self.trigger_completion_on_input(text, cx);
1668 }
1669 }
1670
1671 pub fn newline(&mut self, _: &Newline, cx: &mut ViewContext<Self>) {
1672 self.start_transaction(cx);
1673 let mut old_selections = SmallVec::<[_; 32]>::new();
1674 {
1675 let selections = self.local_selections::<usize>(cx);
1676 let buffer = self.buffer.read(cx).snapshot(cx);
1677 for selection in selections.iter() {
1678 let start_point = selection.start.to_point(&buffer);
1679 let indent = buffer
1680 .indent_column_for_line(start_point.row)
1681 .min(start_point.column);
1682 let start = selection.start;
1683 let end = selection.end;
1684
1685 let mut insert_extra_newline = false;
1686 if let Some(language) = buffer.language() {
1687 let leading_whitespace_len = buffer
1688 .reversed_chars_at(start)
1689 .take_while(|c| c.is_whitespace() && *c != '\n')
1690 .map(|c| c.len_utf8())
1691 .sum::<usize>();
1692
1693 let trailing_whitespace_len = buffer
1694 .chars_at(end)
1695 .take_while(|c| c.is_whitespace() && *c != '\n')
1696 .map(|c| c.len_utf8())
1697 .sum::<usize>();
1698
1699 insert_extra_newline = language.brackets().iter().any(|pair| {
1700 let pair_start = pair.start.trim_end();
1701 let pair_end = pair.end.trim_start();
1702
1703 pair.newline
1704 && buffer.contains_str_at(end + trailing_whitespace_len, pair_end)
1705 && buffer.contains_str_at(
1706 (start - leading_whitespace_len).saturating_sub(pair_start.len()),
1707 pair_start,
1708 )
1709 });
1710 }
1711
1712 old_selections.push((
1713 selection.id,
1714 buffer.anchor_after(end),
1715 start..end,
1716 indent,
1717 insert_extra_newline,
1718 ));
1719 }
1720 }
1721
1722 self.buffer.update(cx, |buffer, cx| {
1723 let mut delta = 0_isize;
1724 let mut pending_edit: Option<PendingEdit> = None;
1725 for (_, _, range, indent, insert_extra_newline) in &old_selections {
1726 if pending_edit.as_ref().map_or(false, |pending| {
1727 pending.indent != *indent
1728 || pending.insert_extra_newline != *insert_extra_newline
1729 }) {
1730 let pending = pending_edit.take().unwrap();
1731 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1732 new_text.push('\n');
1733 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1734 if pending.insert_extra_newline {
1735 new_text = new_text.repeat(2);
1736 }
1737 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1738 delta += pending.delta;
1739 }
1740
1741 let start = (range.start as isize + delta) as usize;
1742 let end = (range.end as isize + delta) as usize;
1743 let mut text_len = *indent as usize + 1;
1744 if *insert_extra_newline {
1745 text_len *= 2;
1746 }
1747
1748 let pending = pending_edit.get_or_insert_with(Default::default);
1749 pending.delta += text_len as isize - (end - start) as isize;
1750 pending.indent = *indent;
1751 pending.insert_extra_newline = *insert_extra_newline;
1752 pending.ranges.push(start..end);
1753 }
1754
1755 let pending = pending_edit.unwrap();
1756 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1757 new_text.push('\n');
1758 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1759 if pending.insert_extra_newline {
1760 new_text = new_text.repeat(2);
1761 }
1762 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1763
1764 let buffer = buffer.read(cx);
1765 self.selections = self
1766 .selections
1767 .iter()
1768 .cloned()
1769 .zip(old_selections)
1770 .map(
1771 |(mut new_selection, (_, end_anchor, _, _, insert_extra_newline))| {
1772 let mut cursor = end_anchor.to_point(&buffer);
1773 if insert_extra_newline {
1774 cursor.row -= 1;
1775 cursor.column = buffer.line_len(cursor.row);
1776 }
1777 let anchor = buffer.anchor_after(cursor);
1778 new_selection.start = anchor.clone();
1779 new_selection.end = anchor;
1780 new_selection
1781 },
1782 )
1783 .collect();
1784 });
1785
1786 self.request_autoscroll(Autoscroll::Fit, cx);
1787 self.end_transaction(cx);
1788
1789 #[derive(Default)]
1790 struct PendingEdit {
1791 indent: u32,
1792 insert_extra_newline: bool,
1793 delta: isize,
1794 ranges: SmallVec<[Range<usize>; 32]>,
1795 }
1796 }
1797
1798 pub fn insert(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1799 self.start_transaction(cx);
1800
1801 let old_selections = self.local_selections::<usize>(cx);
1802 let selection_anchors = self.buffer.update(cx, |buffer, cx| {
1803 let anchors = {
1804 let snapshot = buffer.read(cx);
1805 old_selections
1806 .iter()
1807 .map(|s| (s.id, s.goal, snapshot.anchor_after(s.end)))
1808 .collect::<Vec<_>>()
1809 };
1810 let edit_ranges = old_selections.iter().map(|s| s.start..s.end);
1811 buffer.edit_with_autoindent(edit_ranges, text, cx);
1812 anchors
1813 });
1814
1815 let selections = {
1816 let snapshot = self.buffer.read(cx).read(cx);
1817 selection_anchors
1818 .into_iter()
1819 .map(|(id, goal, position)| {
1820 let position = position.to_offset(&snapshot);
1821 Selection {
1822 id,
1823 start: position,
1824 end: position,
1825 goal,
1826 reversed: false,
1827 }
1828 })
1829 .collect()
1830 };
1831 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1832 self.end_transaction(cx);
1833 }
1834
1835 fn trigger_completion_on_input(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1836 let selection = self.newest_anchor_selection();
1837 if self
1838 .buffer
1839 .read(cx)
1840 .is_completion_trigger(selection.head(), text, cx)
1841 {
1842 self.show_completions(&ShowCompletions, cx);
1843 } else {
1844 self.hide_context_menu(cx);
1845 }
1846 }
1847
1848 fn surround_with_bracket_pair(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
1849 let snapshot = self.buffer.read(cx).snapshot(cx);
1850 if let Some(pair) = snapshot
1851 .language()
1852 .and_then(|language| language.brackets().iter().find(|b| b.start == text))
1853 .cloned()
1854 {
1855 if self
1856 .local_selections::<usize>(cx)
1857 .iter()
1858 .any(|selection| selection.is_empty())
1859 {
1860 false
1861 } else {
1862 let mut selections = self.selections.to_vec();
1863 for selection in &mut selections {
1864 selection.end = selection.end.bias_left(&snapshot);
1865 }
1866 drop(snapshot);
1867
1868 self.buffer.update(cx, |buffer, cx| {
1869 buffer.edit(
1870 selections.iter().map(|s| s.start.clone()..s.start.clone()),
1871 &pair.start,
1872 cx,
1873 );
1874 buffer.edit(
1875 selections.iter().map(|s| s.end.clone()..s.end.clone()),
1876 &pair.end,
1877 cx,
1878 );
1879 });
1880
1881 let snapshot = self.buffer.read(cx).read(cx);
1882 for selection in &mut selections {
1883 selection.end = selection.end.bias_right(&snapshot);
1884 }
1885 drop(snapshot);
1886
1887 self.set_selections(selections.into(), None, cx);
1888 true
1889 }
1890 } else {
1891 false
1892 }
1893 }
1894
1895 fn autoclose_bracket_pairs(&mut self, cx: &mut ViewContext<Self>) {
1896 let selections = self.local_selections::<usize>(cx);
1897 let mut bracket_pair_state = None;
1898 let mut new_selections = None;
1899 self.buffer.update(cx, |buffer, cx| {
1900 let mut snapshot = buffer.snapshot(cx);
1901 let left_biased_selections = selections
1902 .iter()
1903 .map(|selection| Selection {
1904 id: selection.id,
1905 start: snapshot.anchor_before(selection.start),
1906 end: snapshot.anchor_before(selection.end),
1907 reversed: selection.reversed,
1908 goal: selection.goal,
1909 })
1910 .collect::<Vec<_>>();
1911
1912 let autoclose_pair = snapshot.language().and_then(|language| {
1913 let first_selection_start = selections.first().unwrap().start;
1914 let pair = language.brackets().iter().find(|pair| {
1915 snapshot.contains_str_at(
1916 first_selection_start.saturating_sub(pair.start.len()),
1917 &pair.start,
1918 )
1919 });
1920 pair.and_then(|pair| {
1921 let should_autoclose = selections.iter().all(|selection| {
1922 // Ensure all selections are parked at the end of a pair start.
1923 if snapshot.contains_str_at(
1924 selection.start.saturating_sub(pair.start.len()),
1925 &pair.start,
1926 ) {
1927 // Autoclose only if the next character is a whitespace or a pair end
1928 // (possibly a different one from the pair we are inserting).
1929 snapshot
1930 .chars_at(selection.start)
1931 .next()
1932 .map_or(true, |ch| ch.is_whitespace())
1933 || language.brackets().iter().any(|pair| {
1934 snapshot.contains_str_at(selection.start, &pair.end)
1935 })
1936 } else {
1937 false
1938 }
1939 });
1940
1941 if should_autoclose {
1942 Some(pair.clone())
1943 } else {
1944 None
1945 }
1946 })
1947 });
1948
1949 if let Some(pair) = autoclose_pair {
1950 let selection_ranges = selections
1951 .iter()
1952 .map(|selection| {
1953 let start = selection.start.to_offset(&snapshot);
1954 start..start
1955 })
1956 .collect::<SmallVec<[_; 32]>>();
1957
1958 buffer.edit(selection_ranges, &pair.end, cx);
1959 snapshot = buffer.snapshot(cx);
1960
1961 new_selections = Some(
1962 self.resolve_selections::<usize, _>(left_biased_selections.iter(), &snapshot)
1963 .collect::<Vec<_>>(),
1964 );
1965
1966 if pair.end.len() == 1 {
1967 let mut delta = 0;
1968 bracket_pair_state = Some(BracketPairState {
1969 ranges: selections
1970 .iter()
1971 .map(move |selection| {
1972 let offset = selection.start + delta;
1973 delta += 1;
1974 snapshot.anchor_before(offset)..snapshot.anchor_after(offset)
1975 })
1976 .collect(),
1977 pair,
1978 });
1979 }
1980 }
1981 });
1982
1983 if let Some(new_selections) = new_selections {
1984 self.update_selections(new_selections, None, cx);
1985 }
1986 if let Some(bracket_pair_state) = bracket_pair_state {
1987 self.autoclose_stack.push(bracket_pair_state);
1988 }
1989 }
1990
1991 fn skip_autoclose_end(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
1992 let old_selections = self.local_selections::<usize>(cx);
1993 let autoclose_pair = if let Some(autoclose_pair) = self.autoclose_stack.last() {
1994 autoclose_pair
1995 } else {
1996 return false;
1997 };
1998 if text != autoclose_pair.pair.end {
1999 return false;
2000 }
2001
2002 debug_assert_eq!(old_selections.len(), autoclose_pair.ranges.len());
2003
2004 let buffer = self.buffer.read(cx).snapshot(cx);
2005 if old_selections
2006 .iter()
2007 .zip(autoclose_pair.ranges.iter().map(|r| r.to_offset(&buffer)))
2008 .all(|(selection, autoclose_range)| {
2009 let autoclose_range_end = autoclose_range.end.to_offset(&buffer);
2010 selection.is_empty() && selection.start == autoclose_range_end
2011 })
2012 {
2013 let new_selections = old_selections
2014 .into_iter()
2015 .map(|selection| {
2016 let cursor = selection.start + 1;
2017 Selection {
2018 id: selection.id,
2019 start: cursor,
2020 end: cursor,
2021 reversed: false,
2022 goal: SelectionGoal::None,
2023 }
2024 })
2025 .collect();
2026 self.autoclose_stack.pop();
2027 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2028 true
2029 } else {
2030 false
2031 }
2032 }
2033
2034 fn completion_query(buffer: &MultiBufferSnapshot, position: impl ToOffset) -> Option<String> {
2035 let offset = position.to_offset(buffer);
2036 let (word_range, kind) = buffer.surrounding_word(offset);
2037 if offset > word_range.start && kind == Some(CharKind::Word) {
2038 Some(
2039 buffer
2040 .text_for_range(word_range.start..offset)
2041 .collect::<String>(),
2042 )
2043 } else {
2044 None
2045 }
2046 }
2047
2048 fn show_completions(&mut self, _: &ShowCompletions, cx: &mut ViewContext<Self>) {
2049 if self.pending_rename.is_some() {
2050 return;
2051 }
2052
2053 let project = if let Some(project) = self.project.clone() {
2054 project
2055 } else {
2056 return;
2057 };
2058
2059 let position = self.newest_anchor_selection().head();
2060 let (buffer, buffer_position) = if let Some(output) = self
2061 .buffer
2062 .read(cx)
2063 .text_anchor_for_position(position.clone(), cx)
2064 {
2065 output
2066 } else {
2067 return;
2068 };
2069
2070 let query = Self::completion_query(&self.buffer.read(cx).read(cx), position.clone());
2071 let completions = project.update(cx, |project, cx| {
2072 project.completions(&buffer, buffer_position.clone(), cx)
2073 });
2074
2075 let id = post_inc(&mut self.next_completion_id);
2076 let task = cx.spawn_weak(|this, mut cx| {
2077 async move {
2078 let completions = completions.await?;
2079 if completions.is_empty() {
2080 return Ok(());
2081 }
2082
2083 let mut menu = CompletionsMenu {
2084 id,
2085 initial_position: position,
2086 match_candidates: completions
2087 .iter()
2088 .enumerate()
2089 .map(|(id, completion)| {
2090 StringMatchCandidate::new(
2091 id,
2092 completion.label.text[completion.label.filter_range.clone()].into(),
2093 )
2094 })
2095 .collect(),
2096 buffer,
2097 completions: completions.into(),
2098 matches: Vec::new().into(),
2099 selected_item: 0,
2100 list: Default::default(),
2101 };
2102
2103 menu.filter(query.as_deref(), cx.background()).await;
2104
2105 if let Some(this) = this.upgrade(&cx) {
2106 this.update(&mut cx, |this, cx| {
2107 match this.context_menu.as_ref() {
2108 None => {}
2109 Some(ContextMenu::Completions(prev_menu)) => {
2110 if prev_menu.id > menu.id {
2111 return;
2112 }
2113 }
2114 _ => return,
2115 }
2116
2117 this.completion_tasks.retain(|(id, _)| *id > menu.id);
2118 if this.focused {
2119 this.show_context_menu(ContextMenu::Completions(menu), cx);
2120 }
2121
2122 cx.notify();
2123 });
2124 }
2125 Ok::<_, anyhow::Error>(())
2126 }
2127 .log_err()
2128 });
2129 self.completion_tasks.push((id, task));
2130 }
2131
2132 pub fn confirm_completion(
2133 &mut self,
2134 ConfirmCompletion(completion_ix): &ConfirmCompletion,
2135 cx: &mut ViewContext<Self>,
2136 ) -> Option<Task<Result<()>>> {
2137 use language::ToOffset as _;
2138
2139 let completions_menu = if let ContextMenu::Completions(menu) = self.hide_context_menu(cx)? {
2140 menu
2141 } else {
2142 return None;
2143 };
2144
2145 let mat = completions_menu
2146 .matches
2147 .get(completion_ix.unwrap_or(completions_menu.selected_item))?;
2148 let buffer_handle = completions_menu.buffer;
2149 let completion = completions_menu.completions.get(mat.candidate_id)?;
2150
2151 let snippet;
2152 let text;
2153 if completion.is_snippet() {
2154 snippet = Some(Snippet::parse(&completion.new_text).log_err()?);
2155 text = snippet.as_ref().unwrap().text.clone();
2156 } else {
2157 snippet = None;
2158 text = completion.new_text.clone();
2159 };
2160 let buffer = buffer_handle.read(cx);
2161 let old_range = completion.old_range.to_offset(&buffer);
2162 let old_text = buffer.text_for_range(old_range.clone()).collect::<String>();
2163
2164 let selections = self.local_selections::<usize>(cx);
2165 let newest_selection = self.newest_anchor_selection();
2166 if newest_selection.start.buffer_id != Some(buffer_handle.id()) {
2167 return None;
2168 }
2169
2170 let lookbehind = newest_selection
2171 .start
2172 .text_anchor
2173 .to_offset(buffer)
2174 .saturating_sub(old_range.start);
2175 let lookahead = old_range
2176 .end
2177 .saturating_sub(newest_selection.end.text_anchor.to_offset(buffer));
2178 let mut common_prefix_len = old_text
2179 .bytes()
2180 .zip(text.bytes())
2181 .take_while(|(a, b)| a == b)
2182 .count();
2183
2184 let snapshot = self.buffer.read(cx).snapshot(cx);
2185 let mut ranges = Vec::new();
2186 for selection in &selections {
2187 if snapshot.contains_str_at(selection.start.saturating_sub(lookbehind), &old_text) {
2188 let start = selection.start.saturating_sub(lookbehind);
2189 let end = selection.end + lookahead;
2190 ranges.push(start + common_prefix_len..end);
2191 } else {
2192 common_prefix_len = 0;
2193 ranges.clear();
2194 ranges.extend(selections.iter().map(|s| {
2195 if s.id == newest_selection.id {
2196 old_range.clone()
2197 } else {
2198 s.start..s.end
2199 }
2200 }));
2201 break;
2202 }
2203 }
2204 let text = &text[common_prefix_len..];
2205
2206 self.start_transaction(cx);
2207 if let Some(mut snippet) = snippet {
2208 snippet.text = text.to_string();
2209 for tabstop in snippet.tabstops.iter_mut().flatten() {
2210 tabstop.start -= common_prefix_len as isize;
2211 tabstop.end -= common_prefix_len as isize;
2212 }
2213
2214 self.insert_snippet(&ranges, snippet, cx).log_err();
2215 } else {
2216 self.buffer.update(cx, |buffer, cx| {
2217 buffer.edit_with_autoindent(ranges, text, cx);
2218 });
2219 }
2220 self.end_transaction(cx);
2221
2222 let project = self.project.clone()?;
2223 let apply_edits = project.update(cx, |project, cx| {
2224 project.apply_additional_edits_for_completion(
2225 buffer_handle,
2226 completion.clone(),
2227 true,
2228 cx,
2229 )
2230 });
2231 Some(cx.foreground().spawn(async move {
2232 apply_edits.await?;
2233 Ok(())
2234 }))
2235 }
2236
2237 pub fn toggle_code_actions(
2238 &mut self,
2239 &ToggleCodeActions(deployed_from_indicator): &ToggleCodeActions,
2240 cx: &mut ViewContext<Self>,
2241 ) {
2242 if matches!(
2243 self.context_menu.as_ref(),
2244 Some(ContextMenu::CodeActions(_))
2245 ) {
2246 self.context_menu.take();
2247 cx.notify();
2248 return;
2249 }
2250
2251 let mut task = self.code_actions_task.take();
2252 cx.spawn_weak(|this, mut cx| async move {
2253 while let Some(prev_task) = task {
2254 prev_task.await;
2255 task = this
2256 .upgrade(&cx)
2257 .and_then(|this| this.update(&mut cx, |this, _| this.code_actions_task.take()));
2258 }
2259
2260 if let Some(this) = this.upgrade(&cx) {
2261 this.update(&mut cx, |this, cx| {
2262 if this.focused {
2263 if let Some((buffer, actions)) = this.available_code_actions.clone() {
2264 this.show_context_menu(
2265 ContextMenu::CodeActions(CodeActionsMenu {
2266 buffer,
2267 actions,
2268 selected_item: Default::default(),
2269 list: Default::default(),
2270 deployed_from_indicator,
2271 }),
2272 cx,
2273 );
2274 }
2275 }
2276 })
2277 }
2278 Ok::<_, anyhow::Error>(())
2279 })
2280 .detach_and_log_err(cx);
2281 }
2282
2283 pub fn confirm_code_action(
2284 workspace: &mut Workspace,
2285 ConfirmCodeAction(action_ix): &ConfirmCodeAction,
2286 cx: &mut ViewContext<Workspace>,
2287 ) -> Option<Task<Result<()>>> {
2288 let editor = workspace.active_item(cx)?.act_as::<Editor>(cx)?;
2289 let actions_menu = if let ContextMenu::CodeActions(menu) =
2290 editor.update(cx, |editor, cx| editor.hide_context_menu(cx))?
2291 {
2292 menu
2293 } else {
2294 return None;
2295 };
2296 let action_ix = action_ix.unwrap_or(actions_menu.selected_item);
2297 let action = actions_menu.actions.get(action_ix)?.clone();
2298 let title = action.lsp_action.title.clone();
2299 let buffer = actions_menu.buffer;
2300
2301 let apply_code_actions = workspace.project().clone().update(cx, |project, cx| {
2302 project.apply_code_action(buffer, action, true, cx)
2303 });
2304 Some(cx.spawn(|workspace, cx| async move {
2305 let project_transaction = apply_code_actions.await?;
2306 Self::open_project_transaction(editor, workspace, project_transaction, title, cx).await
2307 }))
2308 }
2309
2310 async fn open_project_transaction(
2311 this: ViewHandle<Editor>,
2312 workspace: ViewHandle<Workspace>,
2313 transaction: ProjectTransaction,
2314 title: String,
2315 mut cx: AsyncAppContext,
2316 ) -> Result<()> {
2317 let replica_id = this.read_with(&cx, |this, cx| this.replica_id(cx));
2318
2319 // If the code action's edits are all contained within this editor, then
2320 // avoid opening a new editor to display them.
2321 let mut entries = transaction.0.iter();
2322 if let Some((buffer, transaction)) = entries.next() {
2323 if entries.next().is_none() {
2324 let excerpt = this.read_with(&cx, |editor, cx| {
2325 editor
2326 .buffer()
2327 .read(cx)
2328 .excerpt_containing(editor.newest_anchor_selection().head(), cx)
2329 });
2330 if let Some((excerpted_buffer, excerpt_range)) = excerpt {
2331 if excerpted_buffer == *buffer {
2332 let snapshot = buffer.read_with(&cx, |buffer, _| buffer.snapshot());
2333 let excerpt_range = excerpt_range.to_offset(&snapshot);
2334 if snapshot
2335 .edited_ranges_for_transaction(transaction)
2336 .all(|range| {
2337 excerpt_range.start <= range.start && excerpt_range.end >= range.end
2338 })
2339 {
2340 return Ok(());
2341 }
2342 }
2343 }
2344 }
2345 }
2346
2347 let mut ranges_to_highlight = Vec::new();
2348 let excerpt_buffer = cx.add_model(|cx| {
2349 let mut multibuffer = MultiBuffer::new(replica_id).with_title(title);
2350 for (buffer, transaction) in &transaction.0 {
2351 let snapshot = buffer.read(cx).snapshot();
2352 ranges_to_highlight.extend(
2353 multibuffer.push_excerpts_with_context_lines(
2354 buffer.clone(),
2355 snapshot
2356 .edited_ranges_for_transaction::<usize>(transaction)
2357 .collect(),
2358 1,
2359 cx,
2360 ),
2361 );
2362 }
2363 multibuffer.push_transaction(&transaction.0);
2364 multibuffer
2365 });
2366
2367 workspace.update(&mut cx, |workspace, cx| {
2368 let editor = workspace.open_item(MultiBufferItemHandle(excerpt_buffer), cx);
2369 if let Some(editor) = editor.act_as::<Self>(cx) {
2370 editor.update(cx, |editor, cx| {
2371 let color = editor.style(cx).highlighted_line_background;
2372 editor.highlight_background::<Self>(ranges_to_highlight, color, cx);
2373 });
2374 }
2375 });
2376
2377 Ok(())
2378 }
2379
2380 fn refresh_code_actions(&mut self, cx: &mut ViewContext<Self>) -> Option<()> {
2381 let project = self.project.as_ref()?;
2382 let buffer = self.buffer.read(cx);
2383 let newest_selection = self.newest_anchor_selection().clone();
2384 let (start_buffer, start) = buffer.text_anchor_for_position(newest_selection.start, cx)?;
2385 let (end_buffer, end) = buffer.text_anchor_for_position(newest_selection.end, cx)?;
2386 if start_buffer != end_buffer {
2387 return None;
2388 }
2389
2390 let actions = project.update(cx, |project, cx| {
2391 project.code_actions(&start_buffer, start..end, cx)
2392 });
2393 self.code_actions_task = Some(cx.spawn_weak(|this, mut cx| async move {
2394 let actions = actions.await;
2395 if let Some(this) = this.upgrade(&cx) {
2396 this.update(&mut cx, |this, cx| {
2397 this.available_code_actions = actions.log_err().and_then(|actions| {
2398 if actions.is_empty() {
2399 None
2400 } else {
2401 Some((start_buffer, actions.into()))
2402 }
2403 });
2404 cx.notify();
2405 })
2406 }
2407 }));
2408 None
2409 }
2410
2411 fn refresh_document_highlights(&mut self, cx: &mut ViewContext<Self>) -> Option<()> {
2412 if self.pending_rename.is_some() {
2413 return None;
2414 }
2415
2416 let project = self.project.as_ref()?;
2417 let buffer = self.buffer.read(cx);
2418 let newest_selection = self.newest_anchor_selection().clone();
2419 let cursor_position = newest_selection.head();
2420 let (cursor_buffer, cursor_buffer_position) =
2421 buffer.text_anchor_for_position(cursor_position.clone(), cx)?;
2422 let (tail_buffer, _) = buffer.text_anchor_for_position(newest_selection.tail(), cx)?;
2423 if cursor_buffer != tail_buffer {
2424 return None;
2425 }
2426
2427 let highlights = project.update(cx, |project, cx| {
2428 project.document_highlights(&cursor_buffer, cursor_buffer_position, cx)
2429 });
2430
2431 self.document_highlights_task = Some(cx.spawn_weak(|this, mut cx| async move {
2432 let highlights = highlights.log_err().await;
2433 if let Some((this, highlights)) = this.upgrade(&cx).zip(highlights) {
2434 this.update(&mut cx, |this, cx| {
2435 if this.pending_rename.is_some() {
2436 return;
2437 }
2438
2439 let buffer_id = cursor_position.buffer_id;
2440 let excerpt_id = cursor_position.excerpt_id.clone();
2441 let style = this.style(cx);
2442 let read_background = style.document_highlight_read_background;
2443 let write_background = style.document_highlight_write_background;
2444 let buffer = this.buffer.read(cx);
2445 if !buffer
2446 .text_anchor_for_position(cursor_position, cx)
2447 .map_or(false, |(buffer, _)| buffer == cursor_buffer)
2448 {
2449 return;
2450 }
2451
2452 let mut write_ranges = Vec::new();
2453 let mut read_ranges = Vec::new();
2454 for highlight in highlights {
2455 let range = Anchor {
2456 buffer_id,
2457 excerpt_id: excerpt_id.clone(),
2458 text_anchor: highlight.range.start,
2459 }..Anchor {
2460 buffer_id,
2461 excerpt_id: excerpt_id.clone(),
2462 text_anchor: highlight.range.end,
2463 };
2464 if highlight.kind == lsp::DocumentHighlightKind::WRITE {
2465 write_ranges.push(range);
2466 } else {
2467 read_ranges.push(range);
2468 }
2469 }
2470
2471 this.highlight_background::<DocumentHighlightRead>(
2472 read_ranges,
2473 read_background,
2474 cx,
2475 );
2476 this.highlight_background::<DocumentHighlightWrite>(
2477 write_ranges,
2478 write_background,
2479 cx,
2480 );
2481 cx.notify();
2482 });
2483 }
2484 }));
2485 None
2486 }
2487
2488 pub fn render_code_actions_indicator(
2489 &self,
2490 style: &EditorStyle,
2491 cx: &mut ViewContext<Self>,
2492 ) -> Option<ElementBox> {
2493 if self.available_code_actions.is_some() {
2494 enum Tag {}
2495 Some(
2496 MouseEventHandler::new::<Tag, _, _>(0, cx, |_, _| {
2497 Svg::new("icons/zap.svg")
2498 .with_color(style.code_actions_indicator)
2499 .boxed()
2500 })
2501 .with_cursor_style(CursorStyle::PointingHand)
2502 .with_padding(Padding::uniform(3.))
2503 .on_mouse_down(|cx| {
2504 cx.dispatch_action(ToggleCodeActions(true));
2505 })
2506 .boxed(),
2507 )
2508 } else {
2509 None
2510 }
2511 }
2512
2513 pub fn context_menu_visible(&self) -> bool {
2514 self.context_menu
2515 .as_ref()
2516 .map_or(false, |menu| menu.visible())
2517 }
2518
2519 pub fn render_context_menu(
2520 &self,
2521 cursor_position: DisplayPoint,
2522 style: EditorStyle,
2523 cx: &AppContext,
2524 ) -> Option<(DisplayPoint, ElementBox)> {
2525 self.context_menu
2526 .as_ref()
2527 .map(|menu| menu.render(cursor_position, style, cx))
2528 }
2529
2530 fn show_context_menu(&mut self, menu: ContextMenu, cx: &mut ViewContext<Self>) {
2531 if !matches!(menu, ContextMenu::Completions(_)) {
2532 self.completion_tasks.clear();
2533 }
2534 self.context_menu = Some(menu);
2535 cx.notify();
2536 }
2537
2538 fn hide_context_menu(&mut self, cx: &mut ViewContext<Self>) -> Option<ContextMenu> {
2539 cx.notify();
2540 self.completion_tasks.clear();
2541 self.context_menu.take()
2542 }
2543
2544 pub fn insert_snippet(
2545 &mut self,
2546 insertion_ranges: &[Range<usize>],
2547 snippet: Snippet,
2548 cx: &mut ViewContext<Self>,
2549 ) -> Result<()> {
2550 let tabstops = self.buffer.update(cx, |buffer, cx| {
2551 buffer.edit_with_autoindent(insertion_ranges.iter().cloned(), &snippet.text, cx);
2552
2553 let snapshot = &*buffer.read(cx);
2554 let snippet = &snippet;
2555 snippet
2556 .tabstops
2557 .iter()
2558 .map(|tabstop| {
2559 let mut tabstop_ranges = tabstop
2560 .iter()
2561 .flat_map(|tabstop_range| {
2562 let mut delta = 0 as isize;
2563 insertion_ranges.iter().map(move |insertion_range| {
2564 let insertion_start = insertion_range.start as isize + delta;
2565 delta +=
2566 snippet.text.len() as isize - insertion_range.len() as isize;
2567
2568 let start = snapshot.anchor_before(
2569 (insertion_start + tabstop_range.start) as usize,
2570 );
2571 let end = snapshot
2572 .anchor_after((insertion_start + tabstop_range.end) as usize);
2573 start..end
2574 })
2575 })
2576 .collect::<Vec<_>>();
2577 tabstop_ranges
2578 .sort_unstable_by(|a, b| a.start.cmp(&b.start, snapshot).unwrap());
2579 tabstop_ranges
2580 })
2581 .collect::<Vec<_>>()
2582 });
2583
2584 if let Some(tabstop) = tabstops.first() {
2585 self.select_ranges(tabstop.iter().cloned(), Some(Autoscroll::Fit), cx);
2586 self.snippet_stack.push(SnippetState {
2587 active_index: 0,
2588 ranges: tabstops,
2589 });
2590 }
2591
2592 Ok(())
2593 }
2594
2595 pub fn move_to_next_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) -> bool {
2596 self.move_to_snippet_tabstop(Bias::Right, cx)
2597 }
2598
2599 pub fn move_to_prev_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) {
2600 self.move_to_snippet_tabstop(Bias::Left, cx);
2601 }
2602
2603 pub fn move_to_snippet_tabstop(&mut self, bias: Bias, cx: &mut ViewContext<Self>) -> bool {
2604 let buffer = self.buffer.read(cx).snapshot(cx);
2605
2606 if let Some(snippet) = self.snippet_stack.last_mut() {
2607 match bias {
2608 Bias::Left => {
2609 if snippet.active_index > 0 {
2610 snippet.active_index -= 1;
2611 } else {
2612 return false;
2613 }
2614 }
2615 Bias::Right => {
2616 if snippet.active_index + 1 < snippet.ranges.len() {
2617 snippet.active_index += 1;
2618 } else {
2619 return false;
2620 }
2621 }
2622 }
2623 if let Some(current_ranges) = snippet.ranges.get(snippet.active_index) {
2624 let new_selections = current_ranges
2625 .iter()
2626 .map(|new_range| {
2627 let new_range = new_range.to_offset(&buffer);
2628 Selection {
2629 id: post_inc(&mut self.next_selection_id),
2630 start: new_range.start,
2631 end: new_range.end,
2632 reversed: false,
2633 goal: SelectionGoal::None,
2634 }
2635 })
2636 .collect();
2637
2638 // Remove the snippet state when moving to the last tabstop.
2639 if snippet.active_index + 1 == snippet.ranges.len() {
2640 self.snippet_stack.pop();
2641 }
2642
2643 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2644 return true;
2645 }
2646 self.snippet_stack.pop();
2647 }
2648
2649 false
2650 }
2651
2652 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
2653 self.start_transaction(cx);
2654 self.select_all(&SelectAll, cx);
2655 self.insert("", cx);
2656 self.end_transaction(cx);
2657 }
2658
2659 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
2660 self.start_transaction(cx);
2661 let mut selections = self.local_selections::<Point>(cx);
2662 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2663 for selection in &mut selections {
2664 if selection.is_empty() {
2665 let old_head = selection.head();
2666 let mut new_head =
2667 movement::left(&display_map, old_head.to_display_point(&display_map))
2668 .unwrap()
2669 .to_point(&display_map);
2670 if let Some((buffer, line_buffer_range)) = display_map
2671 .buffer_snapshot
2672 .buffer_line_for_row(old_head.row)
2673 {
2674 let indent_column = buffer.indent_column_for_line(line_buffer_range.start.row);
2675 if old_head.column <= indent_column && old_head.column > 0 {
2676 let indent = buffer.indent_size();
2677 new_head = cmp::min(
2678 new_head,
2679 Point::new(old_head.row, ((old_head.column - 1) / indent) * indent),
2680 );
2681 }
2682 }
2683
2684 selection.set_head(new_head);
2685 selection.goal = SelectionGoal::None;
2686 }
2687 }
2688 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2689 self.insert("", cx);
2690 self.end_transaction(cx);
2691 }
2692
2693 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
2694 self.start_transaction(cx);
2695 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2696 let mut selections = self.local_selections::<Point>(cx);
2697 for selection in &mut selections {
2698 if selection.is_empty() {
2699 let head = selection.head().to_display_point(&display_map);
2700 let cursor = movement::right(&display_map, head)
2701 .unwrap()
2702 .to_point(&display_map);
2703 selection.set_head(cursor);
2704 selection.goal = SelectionGoal::None;
2705 }
2706 }
2707 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2708 self.insert(&"", cx);
2709 self.end_transaction(cx);
2710 }
2711
2712 pub fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
2713 if self.move_to_next_snippet_tabstop(cx) {
2714 return;
2715 }
2716
2717 self.start_transaction(cx);
2718 let tab_size = self.settings.borrow().tab_size;
2719 let mut selections = self.local_selections::<Point>(cx);
2720 let mut last_indent = None;
2721 self.buffer.update(cx, |buffer, cx| {
2722 for selection in &mut selections {
2723 if selection.is_empty() {
2724 let char_column = buffer
2725 .read(cx)
2726 .text_for_range(Point::new(selection.start.row, 0)..selection.start)
2727 .flat_map(str::chars)
2728 .count();
2729 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
2730 buffer.edit(
2731 [selection.start..selection.start],
2732 " ".repeat(chars_to_next_tab_stop),
2733 cx,
2734 );
2735 selection.start.column += chars_to_next_tab_stop as u32;
2736 selection.end = selection.start;
2737 } else {
2738 let mut start_row = selection.start.row;
2739 let mut end_row = selection.end.row + 1;
2740
2741 // If a selection ends at the beginning of a line, don't indent
2742 // that last line.
2743 if selection.end.column == 0 {
2744 end_row -= 1;
2745 }
2746
2747 // Avoid re-indenting a row that has already been indented by a
2748 // previous selection, but still update this selection's column
2749 // to reflect that indentation.
2750 if let Some((last_indent_row, last_indent_len)) = last_indent {
2751 if last_indent_row == selection.start.row {
2752 selection.start.column += last_indent_len;
2753 start_row += 1;
2754 }
2755 if last_indent_row == selection.end.row {
2756 selection.end.column += last_indent_len;
2757 }
2758 }
2759
2760 for row in start_row..end_row {
2761 let indent_column = buffer.read(cx).indent_column_for_line(row) as usize;
2762 let columns_to_next_tab_stop = tab_size - (indent_column % tab_size);
2763 let row_start = Point::new(row, 0);
2764 buffer.edit(
2765 [row_start..row_start],
2766 " ".repeat(columns_to_next_tab_stop),
2767 cx,
2768 );
2769
2770 // Update this selection's endpoints to reflect the indentation.
2771 if row == selection.start.row {
2772 selection.start.column += columns_to_next_tab_stop as u32;
2773 }
2774 if row == selection.end.row {
2775 selection.end.column += columns_to_next_tab_stop as u32;
2776 }
2777
2778 last_indent = Some((row, columns_to_next_tab_stop as u32));
2779 }
2780 }
2781 }
2782 });
2783
2784 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2785 self.end_transaction(cx);
2786 }
2787
2788 pub fn outdent(&mut self, _: &Outdent, cx: &mut ViewContext<Self>) {
2789 if !self.snippet_stack.is_empty() {
2790 self.move_to_prev_snippet_tabstop(cx);
2791 return;
2792 }
2793
2794 self.start_transaction(cx);
2795 let tab_size = self.settings.borrow().tab_size;
2796 let selections = self.local_selections::<Point>(cx);
2797 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2798 let mut deletion_ranges = Vec::new();
2799 let mut last_outdent = None;
2800 {
2801 let buffer = self.buffer.read(cx).read(cx);
2802 for selection in &selections {
2803 let mut rows = selection.spanned_rows(false, &display_map);
2804
2805 // Avoid re-outdenting a row that has already been outdented by a
2806 // previous selection.
2807 if let Some(last_row) = last_outdent {
2808 if last_row == rows.start {
2809 rows.start += 1;
2810 }
2811 }
2812
2813 for row in rows {
2814 let column = buffer.indent_column_for_line(row) as usize;
2815 if column > 0 {
2816 let mut deletion_len = (column % tab_size) as u32;
2817 if deletion_len == 0 {
2818 deletion_len = tab_size as u32;
2819 }
2820 deletion_ranges.push(Point::new(row, 0)..Point::new(row, deletion_len));
2821 last_outdent = Some(row);
2822 }
2823 }
2824 }
2825 }
2826 self.buffer.update(cx, |buffer, cx| {
2827 buffer.edit(deletion_ranges, "", cx);
2828 });
2829
2830 self.update_selections(
2831 self.local_selections::<usize>(cx),
2832 Some(Autoscroll::Fit),
2833 cx,
2834 );
2835 self.end_transaction(cx);
2836 }
2837
2838 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
2839 self.start_transaction(cx);
2840
2841 let selections = self.local_selections::<Point>(cx);
2842 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2843 let buffer = self.buffer.read(cx).snapshot(cx);
2844
2845 let mut new_cursors = Vec::new();
2846 let mut edit_ranges = Vec::new();
2847 let mut selections = selections.iter().peekable();
2848 while let Some(selection) = selections.next() {
2849 let mut rows = selection.spanned_rows(false, &display_map);
2850 let goal_display_column = selection.head().to_display_point(&display_map).column();
2851
2852 // Accumulate contiguous regions of rows that we want to delete.
2853 while let Some(next_selection) = selections.peek() {
2854 let next_rows = next_selection.spanned_rows(false, &display_map);
2855 if next_rows.start <= rows.end {
2856 rows.end = next_rows.end;
2857 selections.next().unwrap();
2858 } else {
2859 break;
2860 }
2861 }
2862
2863 let mut edit_start = Point::new(rows.start, 0).to_offset(&buffer);
2864 let edit_end;
2865 let cursor_buffer_row;
2866 if buffer.max_point().row >= rows.end {
2867 // If there's a line after the range, delete the \n from the end of the row range
2868 // and position the cursor on the next line.
2869 edit_end = Point::new(rows.end, 0).to_offset(&buffer);
2870 cursor_buffer_row = rows.end;
2871 } else {
2872 // If there isn't a line after the range, delete the \n from the line before the
2873 // start of the row range and position the cursor there.
2874 edit_start = edit_start.saturating_sub(1);
2875 edit_end = buffer.len();
2876 cursor_buffer_row = rows.start.saturating_sub(1);
2877 }
2878
2879 let mut cursor = Point::new(cursor_buffer_row, 0).to_display_point(&display_map);
2880 *cursor.column_mut() =
2881 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
2882
2883 new_cursors.push((
2884 selection.id,
2885 buffer.anchor_after(cursor.to_point(&display_map)),
2886 ));
2887 edit_ranges.push(edit_start..edit_end);
2888 }
2889
2890 let buffer = self.buffer.update(cx, |buffer, cx| {
2891 buffer.edit(edit_ranges, "", cx);
2892 buffer.snapshot(cx)
2893 });
2894 let new_selections = new_cursors
2895 .into_iter()
2896 .map(|(id, cursor)| {
2897 let cursor = cursor.to_point(&buffer);
2898 Selection {
2899 id,
2900 start: cursor,
2901 end: cursor,
2902 reversed: false,
2903 goal: SelectionGoal::None,
2904 }
2905 })
2906 .collect();
2907 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2908 self.end_transaction(cx);
2909 }
2910
2911 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
2912 self.start_transaction(cx);
2913
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 = &display_map.buffer_snapshot;
2917
2918 let mut edits = Vec::new();
2919 let mut selections_iter = selections.iter().peekable();
2920 while let Some(selection) = selections_iter.next() {
2921 // Avoid duplicating the same lines twice.
2922 let mut rows = selection.spanned_rows(false, &display_map);
2923
2924 while let Some(next_selection) = selections_iter.peek() {
2925 let next_rows = next_selection.spanned_rows(false, &display_map);
2926 if next_rows.start <= rows.end - 1 {
2927 rows.end = next_rows.end;
2928 selections_iter.next().unwrap();
2929 } else {
2930 break;
2931 }
2932 }
2933
2934 // Copy the text from the selected row region and splice it at the start of the region.
2935 let start = Point::new(rows.start, 0);
2936 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
2937 let text = buffer
2938 .text_for_range(start..end)
2939 .chain(Some("\n"))
2940 .collect::<String>();
2941 edits.push((start, text, rows.len() as u32));
2942 }
2943
2944 self.buffer.update(cx, |buffer, cx| {
2945 for (point, text, _) in edits.into_iter().rev() {
2946 buffer.edit(Some(point..point), text, cx);
2947 }
2948 });
2949
2950 self.request_autoscroll(Autoscroll::Fit, cx);
2951 self.end_transaction(cx);
2952 }
2953
2954 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
2955 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2956 let buffer = self.buffer.read(cx).snapshot(cx);
2957
2958 let mut edits = Vec::new();
2959 let mut unfold_ranges = Vec::new();
2960 let mut refold_ranges = Vec::new();
2961
2962 let selections = self.local_selections::<Point>(cx);
2963 let mut selections = selections.iter().peekable();
2964 let mut contiguous_row_selections = Vec::new();
2965 let mut new_selections = Vec::new();
2966
2967 while let Some(selection) = selections.next() {
2968 // Find all the selections that span a contiguous row range
2969 contiguous_row_selections.push(selection.clone());
2970 let start_row = selection.start.row;
2971 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
2972 display_map.next_line_boundary(selection.end).0.row + 1
2973 } else {
2974 selection.end.row
2975 };
2976
2977 while let Some(next_selection) = selections.peek() {
2978 if next_selection.start.row <= end_row {
2979 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
2980 display_map.next_line_boundary(next_selection.end).0.row + 1
2981 } else {
2982 next_selection.end.row
2983 };
2984 contiguous_row_selections.push(selections.next().unwrap().clone());
2985 } else {
2986 break;
2987 }
2988 }
2989
2990 // Move the text spanned by the row range to be before the line preceding the row range
2991 if start_row > 0 {
2992 let range_to_move = Point::new(start_row - 1, buffer.line_len(start_row - 1))
2993 ..Point::new(end_row - 1, buffer.line_len(end_row - 1));
2994 let insertion_point = display_map
2995 .prev_line_boundary(Point::new(start_row - 1, 0))
2996 .0;
2997
2998 // Don't move lines across excerpts
2999 if buffer
3000 .excerpt_boundaries_in_range((
3001 Bound::Excluded(insertion_point),
3002 Bound::Included(range_to_move.end),
3003 ))
3004 .next()
3005 .is_none()
3006 {
3007 let text = buffer
3008 .text_for_range(range_to_move.clone())
3009 .flat_map(|s| s.chars())
3010 .skip(1)
3011 .chain(['\n'])
3012 .collect::<String>();
3013
3014 edits.push((
3015 buffer.anchor_after(range_to_move.start)
3016 ..buffer.anchor_before(range_to_move.end),
3017 String::new(),
3018 ));
3019 let insertion_anchor = buffer.anchor_after(insertion_point);
3020 edits.push((insertion_anchor.clone()..insertion_anchor, text));
3021
3022 let row_delta = range_to_move.start.row - insertion_point.row + 1;
3023
3024 // Move selections up
3025 new_selections.extend(contiguous_row_selections.drain(..).map(
3026 |mut selection| {
3027 selection.start.row -= row_delta;
3028 selection.end.row -= row_delta;
3029 selection
3030 },
3031 ));
3032
3033 // Move folds up
3034 unfold_ranges.push(range_to_move.clone());
3035 for fold in display_map.folds_in_range(
3036 buffer.anchor_before(range_to_move.start)
3037 ..buffer.anchor_after(range_to_move.end),
3038 ) {
3039 let mut start = fold.start.to_point(&buffer);
3040 let mut end = fold.end.to_point(&buffer);
3041 start.row -= row_delta;
3042 end.row -= row_delta;
3043 refold_ranges.push(start..end);
3044 }
3045 }
3046 }
3047
3048 // If we didn't move line(s), preserve the existing selections
3049 new_selections.extend(contiguous_row_selections.drain(..));
3050 }
3051
3052 self.start_transaction(cx);
3053 self.unfold_ranges(unfold_ranges, cx);
3054 self.buffer.update(cx, |buffer, cx| {
3055 for (range, text) in edits {
3056 buffer.edit([range], text, cx);
3057 }
3058 });
3059 self.fold_ranges(refold_ranges, cx);
3060 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3061 self.end_transaction(cx);
3062 }
3063
3064 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
3065 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3066 let buffer = self.buffer.read(cx).snapshot(cx);
3067
3068 let mut edits = Vec::new();
3069 let mut unfold_ranges = Vec::new();
3070 let mut refold_ranges = Vec::new();
3071
3072 let selections = self.local_selections::<Point>(cx);
3073 let mut selections = selections.iter().peekable();
3074 let mut contiguous_row_selections = Vec::new();
3075 let mut new_selections = Vec::new();
3076
3077 while let Some(selection) = selections.next() {
3078 // Find all the selections that span a contiguous row range
3079 contiguous_row_selections.push(selection.clone());
3080 let start_row = selection.start.row;
3081 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
3082 display_map.next_line_boundary(selection.end).0.row + 1
3083 } else {
3084 selection.end.row
3085 };
3086
3087 while let Some(next_selection) = selections.peek() {
3088 if next_selection.start.row <= end_row {
3089 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
3090 display_map.next_line_boundary(next_selection.end).0.row + 1
3091 } else {
3092 next_selection.end.row
3093 };
3094 contiguous_row_selections.push(selections.next().unwrap().clone());
3095 } else {
3096 break;
3097 }
3098 }
3099
3100 // Move the text spanned by the row range to be after the last line of the row range
3101 if end_row <= buffer.max_point().row {
3102 let range_to_move = Point::new(start_row, 0)..Point::new(end_row, 0);
3103 let insertion_point = display_map.next_line_boundary(Point::new(end_row, 0)).0;
3104
3105 // Don't move lines across excerpt boundaries
3106 if buffer
3107 .excerpt_boundaries_in_range((
3108 Bound::Excluded(range_to_move.start),
3109 Bound::Included(insertion_point),
3110 ))
3111 .next()
3112 .is_none()
3113 {
3114 let mut text = String::from("\n");
3115 text.extend(buffer.text_for_range(range_to_move.clone()));
3116 text.pop(); // Drop trailing newline
3117 edits.push((
3118 buffer.anchor_after(range_to_move.start)
3119 ..buffer.anchor_before(range_to_move.end),
3120 String::new(),
3121 ));
3122 let insertion_anchor = buffer.anchor_after(insertion_point);
3123 edits.push((insertion_anchor.clone()..insertion_anchor, text));
3124
3125 let row_delta = insertion_point.row - range_to_move.end.row + 1;
3126
3127 // Move selections down
3128 new_selections.extend(contiguous_row_selections.drain(..).map(
3129 |mut selection| {
3130 selection.start.row += row_delta;
3131 selection.end.row += row_delta;
3132 selection
3133 },
3134 ));
3135
3136 // Move folds down
3137 unfold_ranges.push(range_to_move.clone());
3138 for fold in display_map.folds_in_range(
3139 buffer.anchor_before(range_to_move.start)
3140 ..buffer.anchor_after(range_to_move.end),
3141 ) {
3142 let mut start = fold.start.to_point(&buffer);
3143 let mut end = fold.end.to_point(&buffer);
3144 start.row += row_delta;
3145 end.row += row_delta;
3146 refold_ranges.push(start..end);
3147 }
3148 }
3149 }
3150
3151 // If we didn't move line(s), preserve the existing selections
3152 new_selections.extend(contiguous_row_selections.drain(..));
3153 }
3154
3155 self.start_transaction(cx);
3156 self.unfold_ranges(unfold_ranges, cx);
3157 self.buffer.update(cx, |buffer, cx| {
3158 for (range, text) in edits {
3159 buffer.edit([range], text, cx);
3160 }
3161 });
3162 self.fold_ranges(refold_ranges, cx);
3163 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3164 self.end_transaction(cx);
3165 }
3166
3167 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
3168 self.start_transaction(cx);
3169 let mut text = String::new();
3170 let mut selections = self.local_selections::<Point>(cx);
3171 let mut clipboard_selections = Vec::with_capacity(selections.len());
3172 {
3173 let buffer = self.buffer.read(cx).read(cx);
3174 let max_point = buffer.max_point();
3175 for selection in &mut selections {
3176 let is_entire_line = selection.is_empty();
3177 if is_entire_line {
3178 selection.start = Point::new(selection.start.row, 0);
3179 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
3180 selection.goal = SelectionGoal::None;
3181 }
3182 let mut len = 0;
3183 for chunk in buffer.text_for_range(selection.start..selection.end) {
3184 text.push_str(chunk);
3185 len += chunk.len();
3186 }
3187 clipboard_selections.push(ClipboardSelection {
3188 len,
3189 is_entire_line,
3190 });
3191 }
3192 }
3193 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3194 self.insert("", cx);
3195 self.end_transaction(cx);
3196
3197 cx.as_mut()
3198 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
3199 }
3200
3201 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
3202 let selections = self.local_selections::<Point>(cx);
3203 let mut text = String::new();
3204 let mut clipboard_selections = Vec::with_capacity(selections.len());
3205 {
3206 let buffer = self.buffer.read(cx).read(cx);
3207 let max_point = buffer.max_point();
3208 for selection in selections.iter() {
3209 let mut start = selection.start;
3210 let mut end = selection.end;
3211 let is_entire_line = selection.is_empty();
3212 if is_entire_line {
3213 start = Point::new(start.row, 0);
3214 end = cmp::min(max_point, Point::new(start.row + 1, 0));
3215 }
3216 let mut len = 0;
3217 for chunk in buffer.text_for_range(start..end) {
3218 text.push_str(chunk);
3219 len += chunk.len();
3220 }
3221 clipboard_selections.push(ClipboardSelection {
3222 len,
3223 is_entire_line,
3224 });
3225 }
3226 }
3227
3228 cx.as_mut()
3229 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
3230 }
3231
3232 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
3233 if let Some(item) = cx.as_mut().read_from_clipboard() {
3234 let clipboard_text = item.text();
3235 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
3236 let mut selections = self.local_selections::<usize>(cx);
3237 let all_selections_were_entire_line =
3238 clipboard_selections.iter().all(|s| s.is_entire_line);
3239 if clipboard_selections.len() != selections.len() {
3240 clipboard_selections.clear();
3241 }
3242
3243 let mut delta = 0_isize;
3244 let mut start_offset = 0;
3245 for (i, selection) in selections.iter_mut().enumerate() {
3246 let to_insert;
3247 let entire_line;
3248 if let Some(clipboard_selection) = clipboard_selections.get(i) {
3249 let end_offset = start_offset + clipboard_selection.len;
3250 to_insert = &clipboard_text[start_offset..end_offset];
3251 entire_line = clipboard_selection.is_entire_line;
3252 start_offset = end_offset
3253 } else {
3254 to_insert = clipboard_text.as_str();
3255 entire_line = all_selections_were_entire_line;
3256 }
3257
3258 selection.start = (selection.start as isize + delta) as usize;
3259 selection.end = (selection.end as isize + delta) as usize;
3260
3261 self.buffer.update(cx, |buffer, cx| {
3262 // If the corresponding selection was empty when this slice of the
3263 // clipboard text was written, then the entire line containing the
3264 // selection was copied. If this selection is also currently empty,
3265 // then paste the line before the current line of the buffer.
3266 let range = if selection.is_empty() && entire_line {
3267 let column = selection.start.to_point(&buffer.read(cx)).column as usize;
3268 let line_start = selection.start - column;
3269 line_start..line_start
3270 } else {
3271 selection.start..selection.end
3272 };
3273
3274 delta += to_insert.len() as isize - range.len() as isize;
3275 buffer.edit([range], to_insert, cx);
3276 selection.start += to_insert.len();
3277 selection.end = selection.start;
3278 });
3279 }
3280 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3281 } else {
3282 self.insert(clipboard_text, cx);
3283 }
3284 }
3285 }
3286
3287 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
3288 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
3289 if let Some((selections, _)) = self.selection_history.get(&tx_id).cloned() {
3290 self.set_selections(selections, None, cx);
3291 }
3292 self.request_autoscroll(Autoscroll::Fit, cx);
3293 }
3294 }
3295
3296 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
3297 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
3298 if let Some((_, Some(selections))) = self.selection_history.get(&tx_id).cloned() {
3299 self.set_selections(selections, None, cx);
3300 }
3301 self.request_autoscroll(Autoscroll::Fit, cx);
3302 }
3303 }
3304
3305 pub fn finalize_last_transaction(&mut self, cx: &mut ViewContext<Self>) {
3306 self.buffer
3307 .update(cx, |buffer, cx| buffer.finalize_last_transaction(cx));
3308 }
3309
3310 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
3311 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3312 let mut selections = self.local_selections::<Point>(cx);
3313 for selection in &mut selections {
3314 let start = selection.start.to_display_point(&display_map);
3315 let end = selection.end.to_display_point(&display_map);
3316
3317 if start != end {
3318 selection.end = selection.start.clone();
3319 } else {
3320 let cursor = movement::left(&display_map, start)
3321 .unwrap()
3322 .to_point(&display_map);
3323 selection.start = cursor.clone();
3324 selection.end = cursor;
3325 }
3326 selection.reversed = false;
3327 selection.goal = SelectionGoal::None;
3328 }
3329 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3330 }
3331
3332 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
3333 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3334 let mut selections = self.local_selections::<Point>(cx);
3335 for selection in &mut selections {
3336 let head = selection.head().to_display_point(&display_map);
3337 let cursor = movement::left(&display_map, head)
3338 .unwrap()
3339 .to_point(&display_map);
3340 selection.set_head(cursor);
3341 selection.goal = SelectionGoal::None;
3342 }
3343 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3344 }
3345
3346 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
3347 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3348 let mut selections = self.local_selections::<Point>(cx);
3349 for selection in &mut selections {
3350 let start = selection.start.to_display_point(&display_map);
3351 let end = selection.end.to_display_point(&display_map);
3352
3353 if start != end {
3354 selection.start = selection.end.clone();
3355 } else {
3356 let cursor = movement::right(&display_map, end)
3357 .unwrap()
3358 .to_point(&display_map);
3359 selection.start = cursor;
3360 selection.end = cursor;
3361 }
3362 selection.reversed = false;
3363 selection.goal = SelectionGoal::None;
3364 }
3365 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3366 }
3367
3368 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
3369 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3370 let mut selections = self.local_selections::<Point>(cx);
3371 for selection in &mut selections {
3372 let head = selection.head().to_display_point(&display_map);
3373 let cursor = movement::right(&display_map, head)
3374 .unwrap()
3375 .to_point(&display_map);
3376 selection.set_head(cursor);
3377 selection.goal = SelectionGoal::None;
3378 }
3379 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3380 }
3381
3382 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
3383 if self.take_rename(cx).is_some() {
3384 return;
3385 }
3386
3387 if let Some(context_menu) = self.context_menu.as_mut() {
3388 if context_menu.select_prev(cx) {
3389 return;
3390 }
3391 }
3392
3393 if matches!(self.mode, EditorMode::SingleLine) {
3394 cx.propagate_action();
3395 return;
3396 }
3397
3398 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3399 let mut selections = self.local_selections::<Point>(cx);
3400 for selection in &mut selections {
3401 let start = selection.start.to_display_point(&display_map);
3402 let end = selection.end.to_display_point(&display_map);
3403 if start != end {
3404 selection.goal = SelectionGoal::None;
3405 }
3406
3407 let (start, goal) = movement::up(&display_map, start, selection.goal).unwrap();
3408 let cursor = start.to_point(&display_map);
3409 selection.start = cursor;
3410 selection.end = cursor;
3411 selection.goal = goal;
3412 selection.reversed = false;
3413 }
3414 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3415 }
3416
3417 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
3418 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3419 let mut selections = self.local_selections::<Point>(cx);
3420 for selection in &mut selections {
3421 let head = selection.head().to_display_point(&display_map);
3422 let (head, goal) = movement::up(&display_map, head, selection.goal).unwrap();
3423 let cursor = head.to_point(&display_map);
3424 selection.set_head(cursor);
3425 selection.goal = goal;
3426 }
3427 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3428 }
3429
3430 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
3431 self.take_rename(cx);
3432
3433 if let Some(context_menu) = self.context_menu.as_mut() {
3434 if context_menu.select_next(cx) {
3435 return;
3436 }
3437 }
3438
3439 if matches!(self.mode, EditorMode::SingleLine) {
3440 cx.propagate_action();
3441 return;
3442 }
3443
3444 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3445 let mut selections = self.local_selections::<Point>(cx);
3446 for selection in &mut selections {
3447 let start = selection.start.to_display_point(&display_map);
3448 let end = selection.end.to_display_point(&display_map);
3449 if start != end {
3450 selection.goal = SelectionGoal::None;
3451 }
3452
3453 let (start, goal) = movement::down(&display_map, end, selection.goal).unwrap();
3454 let cursor = start.to_point(&display_map);
3455 selection.start = cursor;
3456 selection.end = cursor;
3457 selection.goal = goal;
3458 selection.reversed = false;
3459 }
3460 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3461 }
3462
3463 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
3464 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3465 let mut selections = self.local_selections::<Point>(cx);
3466 for selection in &mut selections {
3467 let head = selection.head().to_display_point(&display_map);
3468 let (head, goal) = movement::down(&display_map, head, selection.goal).unwrap();
3469 let cursor = head.to_point(&display_map);
3470 selection.set_head(cursor);
3471 selection.goal = goal;
3472 }
3473 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3474 }
3475
3476 pub fn move_to_previous_word_boundary(
3477 &mut self,
3478 _: &MoveToPreviousWordBoundary,
3479 cx: &mut ViewContext<Self>,
3480 ) {
3481 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3482 let mut selections = self.local_selections::<Point>(cx);
3483 for selection in &mut selections {
3484 let head = selection.head().to_display_point(&display_map);
3485 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3486 selection.start = cursor.clone();
3487 selection.end = cursor;
3488 selection.reversed = false;
3489 selection.goal = SelectionGoal::None;
3490 }
3491 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3492 }
3493
3494 pub fn select_to_previous_word_boundary(
3495 &mut self,
3496 _: &SelectToPreviousWordBoundary,
3497 cx: &mut ViewContext<Self>,
3498 ) {
3499 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3500 let mut selections = self.local_selections::<Point>(cx);
3501 for selection in &mut selections {
3502 let head = selection.head().to_display_point(&display_map);
3503 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3504 selection.set_head(cursor);
3505 selection.goal = SelectionGoal::None;
3506 }
3507 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3508 }
3509
3510 pub fn delete_to_previous_word_boundary(
3511 &mut self,
3512 _: &DeleteToPreviousWordBoundary,
3513 cx: &mut ViewContext<Self>,
3514 ) {
3515 self.start_transaction(cx);
3516 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3517 let mut selections = self.local_selections::<Point>(cx);
3518 for selection in &mut selections {
3519 if selection.is_empty() {
3520 let head = selection.head().to_display_point(&display_map);
3521 let cursor =
3522 movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3523 selection.set_head(cursor);
3524 selection.goal = SelectionGoal::None;
3525 }
3526 }
3527 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3528 self.insert("", cx);
3529 self.end_transaction(cx);
3530 }
3531
3532 pub fn move_to_next_word_boundary(
3533 &mut self,
3534 _: &MoveToNextWordBoundary,
3535 cx: &mut ViewContext<Self>,
3536 ) {
3537 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3538 let mut selections = self.local_selections::<Point>(cx);
3539 for selection in &mut selections {
3540 let head = selection.head().to_display_point(&display_map);
3541 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
3542 selection.start = cursor;
3543 selection.end = cursor;
3544 selection.reversed = false;
3545 selection.goal = SelectionGoal::None;
3546 }
3547 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3548 }
3549
3550 pub fn select_to_next_word_boundary(
3551 &mut self,
3552 _: &SelectToNextWordBoundary,
3553 cx: &mut ViewContext<Self>,
3554 ) {
3555 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3556 let mut selections = self.local_selections::<Point>(cx);
3557 for selection in &mut selections {
3558 let head = selection.head().to_display_point(&display_map);
3559 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
3560 selection.set_head(cursor);
3561 selection.goal = SelectionGoal::None;
3562 }
3563 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3564 }
3565
3566 pub fn delete_to_next_word_boundary(
3567 &mut self,
3568 _: &DeleteToNextWordBoundary,
3569 cx: &mut ViewContext<Self>,
3570 ) {
3571 self.start_transaction(cx);
3572 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3573 let mut selections = self.local_selections::<Point>(cx);
3574 for selection in &mut selections {
3575 if selection.is_empty() {
3576 let head = selection.head().to_display_point(&display_map);
3577 let cursor =
3578 movement::next_word_boundary(&display_map, head).to_point(&display_map);
3579 selection.set_head(cursor);
3580 selection.goal = SelectionGoal::None;
3581 }
3582 }
3583 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3584 self.insert("", cx);
3585 self.end_transaction(cx);
3586 }
3587
3588 pub fn move_to_beginning_of_line(
3589 &mut self,
3590 _: &MoveToBeginningOfLine,
3591 cx: &mut ViewContext<Self>,
3592 ) {
3593 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3594 let mut selections = self.local_selections::<Point>(cx);
3595 for selection in &mut selections {
3596 let head = selection.head().to_display_point(&display_map);
3597 let new_head = movement::line_beginning(&display_map, head, true);
3598 let cursor = new_head.to_point(&display_map);
3599 selection.start = cursor;
3600 selection.end = cursor;
3601 selection.reversed = false;
3602 selection.goal = SelectionGoal::None;
3603 }
3604 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3605 }
3606
3607 pub fn select_to_beginning_of_line(
3608 &mut self,
3609 SelectToBeginningOfLine(stop_at_soft_boundaries): &SelectToBeginningOfLine,
3610 cx: &mut ViewContext<Self>,
3611 ) {
3612 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3613 let mut selections = self.local_selections::<Point>(cx);
3614 for selection in &mut selections {
3615 let head = selection.head().to_display_point(&display_map);
3616 let new_head = movement::line_beginning(&display_map, head, *stop_at_soft_boundaries);
3617 selection.set_head(new_head.to_point(&display_map));
3618 selection.goal = SelectionGoal::None;
3619 }
3620 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3621 }
3622
3623 pub fn delete_to_beginning_of_line(
3624 &mut self,
3625 _: &DeleteToBeginningOfLine,
3626 cx: &mut ViewContext<Self>,
3627 ) {
3628 self.start_transaction(cx);
3629 self.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
3630 self.backspace(&Backspace, cx);
3631 self.end_transaction(cx);
3632 }
3633
3634 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
3635 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3636 let mut selections = self.local_selections::<Point>(cx);
3637 {
3638 for selection in &mut selections {
3639 let head = selection.head().to_display_point(&display_map);
3640 let new_head = movement::line_end(&display_map, head, true);
3641 let anchor = new_head.to_point(&display_map);
3642 selection.start = anchor.clone();
3643 selection.end = anchor;
3644 selection.reversed = false;
3645 selection.goal = SelectionGoal::None;
3646 }
3647 }
3648 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3649 }
3650
3651 pub fn select_to_end_of_line(
3652 &mut self,
3653 SelectToEndOfLine(stop_at_soft_boundaries): &SelectToEndOfLine,
3654 cx: &mut ViewContext<Self>,
3655 ) {
3656 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3657 let mut selections = self.local_selections::<Point>(cx);
3658 for selection in &mut selections {
3659 let head = selection.head().to_display_point(&display_map);
3660 let new_head = movement::line_end(&display_map, head, *stop_at_soft_boundaries);
3661 selection.set_head(new_head.to_point(&display_map));
3662 selection.goal = SelectionGoal::None;
3663 }
3664 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3665 }
3666
3667 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
3668 self.start_transaction(cx);
3669 self.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3670 self.delete(&Delete, cx);
3671 self.end_transaction(cx);
3672 }
3673
3674 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
3675 self.start_transaction(cx);
3676 self.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3677 self.cut(&Cut, cx);
3678 self.end_transaction(cx);
3679 }
3680
3681 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
3682 if matches!(self.mode, EditorMode::SingleLine) {
3683 cx.propagate_action();
3684 return;
3685 }
3686
3687 let selection = Selection {
3688 id: post_inc(&mut self.next_selection_id),
3689 start: 0,
3690 end: 0,
3691 reversed: false,
3692 goal: SelectionGoal::None,
3693 };
3694 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3695 }
3696
3697 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
3698 let mut selection = self.local_selections::<Point>(cx).last().unwrap().clone();
3699 selection.set_head(Point::zero());
3700 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3701 }
3702
3703 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
3704 if matches!(self.mode, EditorMode::SingleLine) {
3705 cx.propagate_action();
3706 return;
3707 }
3708
3709 let cursor = self.buffer.read(cx).read(cx).len();
3710 let selection = Selection {
3711 id: post_inc(&mut self.next_selection_id),
3712 start: cursor,
3713 end: cursor,
3714 reversed: false,
3715 goal: SelectionGoal::None,
3716 };
3717 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3718 }
3719
3720 pub fn set_nav_history(&mut self, nav_history: Option<ItemNavHistory>) {
3721 self.nav_history = nav_history;
3722 }
3723
3724 pub fn nav_history(&self) -> Option<&ItemNavHistory> {
3725 self.nav_history.as_ref()
3726 }
3727
3728 fn push_to_nav_history(
3729 &self,
3730 position: Anchor,
3731 new_position: Option<Point>,
3732 cx: &mut ViewContext<Self>,
3733 ) {
3734 if let Some(nav_history) = &self.nav_history {
3735 let buffer = self.buffer.read(cx).read(cx);
3736 let offset = position.to_offset(&buffer);
3737 let point = position.to_point(&buffer);
3738 drop(buffer);
3739
3740 if let Some(new_position) = new_position {
3741 let row_delta = (new_position.row as i64 - point.row as i64).abs();
3742 if row_delta < MIN_NAVIGATION_HISTORY_ROW_DELTA {
3743 return;
3744 }
3745 }
3746
3747 nav_history.push(Some(NavigationData {
3748 anchor: position,
3749 offset,
3750 }));
3751 }
3752 }
3753
3754 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
3755 let mut selection = self.local_selections::<usize>(cx).first().unwrap().clone();
3756 selection.set_head(self.buffer.read(cx).read(cx).len());
3757 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3758 }
3759
3760 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
3761 let selection = Selection {
3762 id: post_inc(&mut self.next_selection_id),
3763 start: 0,
3764 end: self.buffer.read(cx).read(cx).len(),
3765 reversed: false,
3766 goal: SelectionGoal::None,
3767 };
3768 self.update_selections(vec![selection], None, cx);
3769 }
3770
3771 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
3772 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3773 let mut selections = self.local_selections::<Point>(cx);
3774 let max_point = display_map.buffer_snapshot.max_point();
3775 for selection in &mut selections {
3776 let rows = selection.spanned_rows(true, &display_map);
3777 selection.start = Point::new(rows.start, 0);
3778 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
3779 selection.reversed = false;
3780 }
3781 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3782 }
3783
3784 pub fn split_selection_into_lines(
3785 &mut self,
3786 _: &SplitSelectionIntoLines,
3787 cx: &mut ViewContext<Self>,
3788 ) {
3789 let mut to_unfold = Vec::new();
3790 let mut new_selections = Vec::new();
3791 {
3792 let selections = self.local_selections::<Point>(cx);
3793 let buffer = self.buffer.read(cx).read(cx);
3794 for selection in selections {
3795 for row in selection.start.row..selection.end.row {
3796 let cursor = Point::new(row, buffer.line_len(row));
3797 new_selections.push(Selection {
3798 id: post_inc(&mut self.next_selection_id),
3799 start: cursor,
3800 end: cursor,
3801 reversed: false,
3802 goal: SelectionGoal::None,
3803 });
3804 }
3805 new_selections.push(Selection {
3806 id: selection.id,
3807 start: selection.end,
3808 end: selection.end,
3809 reversed: false,
3810 goal: SelectionGoal::None,
3811 });
3812 to_unfold.push(selection.start..selection.end);
3813 }
3814 }
3815 self.unfold_ranges(to_unfold, cx);
3816 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3817 }
3818
3819 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
3820 self.add_selection(true, cx);
3821 }
3822
3823 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
3824 self.add_selection(false, cx);
3825 }
3826
3827 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
3828 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3829 let mut selections = self.local_selections::<Point>(cx);
3830 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
3831 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
3832 let range = oldest_selection.display_range(&display_map).sorted();
3833 let columns = cmp::min(range.start.column(), range.end.column())
3834 ..cmp::max(range.start.column(), range.end.column());
3835
3836 selections.clear();
3837 let mut stack = Vec::new();
3838 for row in range.start.row()..=range.end.row() {
3839 if let Some(selection) = self.build_columnar_selection(
3840 &display_map,
3841 row,
3842 &columns,
3843 oldest_selection.reversed,
3844 ) {
3845 stack.push(selection.id);
3846 selections.push(selection);
3847 }
3848 }
3849
3850 if above {
3851 stack.reverse();
3852 }
3853
3854 AddSelectionsState { above, stack }
3855 });
3856
3857 let last_added_selection = *state.stack.last().unwrap();
3858 let mut new_selections = Vec::new();
3859 if above == state.above {
3860 let end_row = if above {
3861 0
3862 } else {
3863 display_map.max_point().row()
3864 };
3865
3866 'outer: for selection in selections {
3867 if selection.id == last_added_selection {
3868 let range = selection.display_range(&display_map).sorted();
3869 debug_assert_eq!(range.start.row(), range.end.row());
3870 let mut row = range.start.row();
3871 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
3872 {
3873 start..end
3874 } else {
3875 cmp::min(range.start.column(), range.end.column())
3876 ..cmp::max(range.start.column(), range.end.column())
3877 };
3878
3879 while row != end_row {
3880 if above {
3881 row -= 1;
3882 } else {
3883 row += 1;
3884 }
3885
3886 if let Some(new_selection) = self.build_columnar_selection(
3887 &display_map,
3888 row,
3889 &columns,
3890 selection.reversed,
3891 ) {
3892 state.stack.push(new_selection.id);
3893 if above {
3894 new_selections.push(new_selection);
3895 new_selections.push(selection);
3896 } else {
3897 new_selections.push(selection);
3898 new_selections.push(new_selection);
3899 }
3900
3901 continue 'outer;
3902 }
3903 }
3904 }
3905
3906 new_selections.push(selection);
3907 }
3908 } else {
3909 new_selections = selections;
3910 new_selections.retain(|s| s.id != last_added_selection);
3911 state.stack.pop();
3912 }
3913
3914 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3915 if state.stack.len() > 1 {
3916 self.add_selections_state = Some(state);
3917 }
3918 }
3919
3920 pub fn select_next(&mut self, action: &SelectNext, cx: &mut ViewContext<Self>) {
3921 let replace_newest = action.0;
3922 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3923 let buffer = &display_map.buffer_snapshot;
3924 let mut selections = self.local_selections::<usize>(cx);
3925 if let Some(mut select_next_state) = self.select_next_state.take() {
3926 let query = &select_next_state.query;
3927 if !select_next_state.done {
3928 let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
3929 let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
3930 let mut next_selected_range = None;
3931
3932 let bytes_after_last_selection =
3933 buffer.bytes_in_range(last_selection.end..buffer.len());
3934 let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
3935 let query_matches = query
3936 .stream_find_iter(bytes_after_last_selection)
3937 .map(|result| (last_selection.end, result))
3938 .chain(
3939 query
3940 .stream_find_iter(bytes_before_first_selection)
3941 .map(|result| (0, result)),
3942 );
3943 for (start_offset, query_match) in query_matches {
3944 let query_match = query_match.unwrap(); // can only fail due to I/O
3945 let offset_range =
3946 start_offset + query_match.start()..start_offset + query_match.end();
3947 let display_range = offset_range.start.to_display_point(&display_map)
3948 ..offset_range.end.to_display_point(&display_map);
3949
3950 if !select_next_state.wordwise
3951 || (!movement::is_inside_word(&display_map, display_range.start)
3952 && !movement::is_inside_word(&display_map, display_range.end))
3953 {
3954 next_selected_range = Some(offset_range);
3955 break;
3956 }
3957 }
3958
3959 if let Some(next_selected_range) = next_selected_range {
3960 if replace_newest {
3961 if let Some(newest_id) =
3962 selections.iter().max_by_key(|s| s.id).map(|s| s.id)
3963 {
3964 selections.retain(|s| s.id != newest_id);
3965 }
3966 }
3967 selections.push(Selection {
3968 id: post_inc(&mut self.next_selection_id),
3969 start: next_selected_range.start,
3970 end: next_selected_range.end,
3971 reversed: false,
3972 goal: SelectionGoal::None,
3973 });
3974 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3975 } else {
3976 select_next_state.done = true;
3977 }
3978 }
3979
3980 self.select_next_state = Some(select_next_state);
3981 } else if selections.len() == 1 {
3982 let selection = selections.last_mut().unwrap();
3983 if selection.start == selection.end {
3984 let word_range = movement::surrounding_word(
3985 &display_map,
3986 selection.start.to_display_point(&display_map),
3987 );
3988 selection.start = word_range.start.to_offset(&display_map, Bias::Left);
3989 selection.end = word_range.end.to_offset(&display_map, Bias::Left);
3990 selection.goal = SelectionGoal::None;
3991 selection.reversed = false;
3992
3993 let query = buffer
3994 .text_for_range(selection.start..selection.end)
3995 .collect::<String>();
3996 let select_state = SelectNextState {
3997 query: AhoCorasick::new_auto_configured(&[query]),
3998 wordwise: true,
3999 done: false,
4000 };
4001 self.update_selections(selections, Some(Autoscroll::Newest), cx);
4002 self.select_next_state = Some(select_state);
4003 } else {
4004 let query = buffer
4005 .text_for_range(selection.start..selection.end)
4006 .collect::<String>();
4007 self.select_next_state = Some(SelectNextState {
4008 query: AhoCorasick::new_auto_configured(&[query]),
4009 wordwise: false,
4010 done: false,
4011 });
4012 self.select_next(action, cx);
4013 }
4014 }
4015 }
4016
4017 pub fn toggle_comments(&mut self, _: &ToggleComments, cx: &mut ViewContext<Self>) {
4018 // Get the line comment prefix. Split its trailing whitespace into a separate string,
4019 // as that portion won't be used for detecting if a line is a comment.
4020 let full_comment_prefix =
4021 if let Some(prefix) = self.language(cx).and_then(|l| l.line_comment_prefix()) {
4022 prefix.to_string()
4023 } else {
4024 return;
4025 };
4026 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
4027 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
4028
4029 self.start_transaction(cx);
4030 let mut selections = self.local_selections::<Point>(cx);
4031 let mut all_selection_lines_are_comments = true;
4032 let mut edit_ranges = Vec::new();
4033 let mut last_toggled_row = None;
4034 self.buffer.update(cx, |buffer, cx| {
4035 for selection in &mut selections {
4036 edit_ranges.clear();
4037 let snapshot = buffer.snapshot(cx);
4038
4039 let end_row =
4040 if selection.end.row > selection.start.row && selection.end.column == 0 {
4041 selection.end.row
4042 } else {
4043 selection.end.row + 1
4044 };
4045
4046 for row in selection.start.row..end_row {
4047 // If multiple selections contain a given row, avoid processing that
4048 // row more than once.
4049 if last_toggled_row == Some(row) {
4050 continue;
4051 } else {
4052 last_toggled_row = Some(row);
4053 }
4054
4055 if snapshot.is_line_blank(row) {
4056 continue;
4057 }
4058
4059 let start = Point::new(row, snapshot.indent_column_for_line(row));
4060 let mut line_bytes = snapshot
4061 .bytes_in_range(start..snapshot.max_point())
4062 .flatten()
4063 .copied();
4064
4065 // If this line currently begins with the line comment prefix, then record
4066 // the range containing the prefix.
4067 if all_selection_lines_are_comments
4068 && line_bytes
4069 .by_ref()
4070 .take(comment_prefix.len())
4071 .eq(comment_prefix.bytes())
4072 {
4073 // Include any whitespace that matches the comment prefix.
4074 let matching_whitespace_len = line_bytes
4075 .zip(comment_prefix_whitespace.bytes())
4076 .take_while(|(a, b)| a == b)
4077 .count() as u32;
4078 let end = Point::new(
4079 row,
4080 start.column + comment_prefix.len() as u32 + matching_whitespace_len,
4081 );
4082 edit_ranges.push(start..end);
4083 }
4084 // If this line does not begin with the line comment prefix, then record
4085 // the position where the prefix should be inserted.
4086 else {
4087 all_selection_lines_are_comments = false;
4088 edit_ranges.push(start..start);
4089 }
4090 }
4091
4092 if !edit_ranges.is_empty() {
4093 if all_selection_lines_are_comments {
4094 buffer.edit(edit_ranges.iter().cloned(), "", cx);
4095 } else {
4096 let min_column = edit_ranges.iter().map(|r| r.start.column).min().unwrap();
4097 let edit_ranges = edit_ranges.iter().map(|range| {
4098 let position = Point::new(range.start.row, min_column);
4099 position..position
4100 });
4101 buffer.edit(edit_ranges, &full_comment_prefix, cx);
4102 }
4103 }
4104 }
4105 });
4106
4107 self.update_selections(
4108 self.local_selections::<usize>(cx),
4109 Some(Autoscroll::Fit),
4110 cx,
4111 );
4112 self.end_transaction(cx);
4113 }
4114
4115 pub fn select_larger_syntax_node(
4116 &mut self,
4117 _: &SelectLargerSyntaxNode,
4118 cx: &mut ViewContext<Self>,
4119 ) {
4120 let old_selections = self.local_selections::<usize>(cx).into_boxed_slice();
4121 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4122 let buffer = self.buffer.read(cx).snapshot(cx);
4123
4124 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
4125 let mut selected_larger_node = false;
4126 let new_selections = old_selections
4127 .iter()
4128 .map(|selection| {
4129 let old_range = selection.start..selection.end;
4130 let mut new_range = old_range.clone();
4131 while let Some(containing_range) =
4132 buffer.range_for_syntax_ancestor(new_range.clone())
4133 {
4134 new_range = containing_range;
4135 if !display_map.intersects_fold(new_range.start)
4136 && !display_map.intersects_fold(new_range.end)
4137 {
4138 break;
4139 }
4140 }
4141
4142 selected_larger_node |= new_range != old_range;
4143 Selection {
4144 id: selection.id,
4145 start: new_range.start,
4146 end: new_range.end,
4147 goal: SelectionGoal::None,
4148 reversed: selection.reversed,
4149 }
4150 })
4151 .collect::<Vec<_>>();
4152
4153 if selected_larger_node {
4154 stack.push(old_selections);
4155 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
4156 }
4157 self.select_larger_syntax_node_stack = stack;
4158 }
4159
4160 pub fn select_smaller_syntax_node(
4161 &mut self,
4162 _: &SelectSmallerSyntaxNode,
4163 cx: &mut ViewContext<Self>,
4164 ) {
4165 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
4166 if let Some(selections) = stack.pop() {
4167 self.update_selections(selections.to_vec(), Some(Autoscroll::Fit), cx);
4168 }
4169 self.select_larger_syntax_node_stack = stack;
4170 }
4171
4172 pub fn move_to_enclosing_bracket(
4173 &mut self,
4174 _: &MoveToEnclosingBracket,
4175 cx: &mut ViewContext<Self>,
4176 ) {
4177 let mut selections = self.local_selections::<usize>(cx);
4178 let buffer = self.buffer.read(cx).snapshot(cx);
4179 for selection in &mut selections {
4180 if let Some((open_range, close_range)) =
4181 buffer.enclosing_bracket_ranges(selection.start..selection.end)
4182 {
4183 let close_range = close_range.to_inclusive();
4184 let destination = if close_range.contains(&selection.start)
4185 && close_range.contains(&selection.end)
4186 {
4187 open_range.end
4188 } else {
4189 *close_range.start()
4190 };
4191 selection.start = destination;
4192 selection.end = destination;
4193 }
4194 }
4195
4196 self.update_selections(selections, Some(Autoscroll::Fit), cx);
4197 }
4198
4199 pub fn show_next_diagnostic(&mut self, _: &ShowNextDiagnostic, cx: &mut ViewContext<Self>) {
4200 let buffer = self.buffer.read(cx).snapshot(cx);
4201 let selection = self.newest_selection_with_snapshot::<usize>(&buffer);
4202 let mut active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
4203 active_diagnostics
4204 .primary_range
4205 .to_offset(&buffer)
4206 .to_inclusive()
4207 });
4208 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
4209 if active_primary_range.contains(&selection.head()) {
4210 *active_primary_range.end()
4211 } else {
4212 selection.head()
4213 }
4214 } else {
4215 selection.head()
4216 };
4217
4218 loop {
4219 let next_group = buffer
4220 .diagnostics_in_range::<_, usize>(search_start..buffer.len())
4221 .find_map(|entry| {
4222 if entry.diagnostic.is_primary
4223 && !entry.range.is_empty()
4224 && Some(entry.range.end) != active_primary_range.as_ref().map(|r| *r.end())
4225 {
4226 Some((entry.range, entry.diagnostic.group_id))
4227 } else {
4228 None
4229 }
4230 });
4231
4232 if let Some((primary_range, group_id)) = next_group {
4233 self.activate_diagnostics(group_id, cx);
4234 self.update_selections(
4235 vec![Selection {
4236 id: selection.id,
4237 start: primary_range.start,
4238 end: primary_range.start,
4239 reversed: false,
4240 goal: SelectionGoal::None,
4241 }],
4242 Some(Autoscroll::Center),
4243 cx,
4244 );
4245 break;
4246 } else if search_start == 0 {
4247 break;
4248 } else {
4249 // Cycle around to the start of the buffer, potentially moving back to the start of
4250 // the currently active diagnostic.
4251 search_start = 0;
4252 active_primary_range.take();
4253 }
4254 }
4255 }
4256
4257 pub fn go_to_definition(
4258 workspace: &mut Workspace,
4259 _: &GoToDefinition,
4260 cx: &mut ViewContext<Workspace>,
4261 ) {
4262 let active_item = workspace.active_item(cx);
4263 let editor_handle = if let Some(editor) = active_item
4264 .as_ref()
4265 .and_then(|item| item.act_as::<Self>(cx))
4266 {
4267 editor
4268 } else {
4269 return;
4270 };
4271
4272 let editor = editor_handle.read(cx);
4273 let head = editor.newest_selection::<usize>(cx).head();
4274 let (buffer, head) =
4275 if let Some(text_anchor) = editor.buffer.read(cx).text_anchor_for_position(head, cx) {
4276 text_anchor
4277 } else {
4278 return;
4279 };
4280
4281 let definitions = workspace
4282 .project()
4283 .update(cx, |project, cx| project.definition(&buffer, head, cx));
4284 cx.spawn(|workspace, mut cx| async move {
4285 let definitions = definitions.await?;
4286 workspace.update(&mut cx, |workspace, cx| {
4287 let nav_history = workspace.active_pane().read(cx).nav_history().clone();
4288 for definition in definitions {
4289 let range = definition.range.to_offset(definition.buffer.read(cx));
4290 let target_editor_handle = workspace
4291 .open_item(BufferItemHandle(definition.buffer), cx)
4292 .downcast::<Self>()
4293 .unwrap();
4294
4295 target_editor_handle.update(cx, |target_editor, cx| {
4296 // When selecting a definition in a different buffer, disable the nav history
4297 // to avoid creating a history entry at the previous cursor location.
4298 if editor_handle != target_editor_handle {
4299 nav_history.borrow_mut().disable();
4300 }
4301 target_editor.select_ranges([range], Some(Autoscroll::Center), cx);
4302 nav_history.borrow_mut().enable();
4303 });
4304 }
4305 });
4306
4307 Ok::<(), anyhow::Error>(())
4308 })
4309 .detach_and_log_err(cx);
4310 }
4311
4312 pub fn find_all_references(
4313 workspace: &mut Workspace,
4314 _: &FindAllReferences,
4315 cx: &mut ViewContext<Workspace>,
4316 ) -> Option<Task<Result<()>>> {
4317 let active_item = workspace.active_item(cx)?;
4318 let editor_handle = active_item.act_as::<Self>(cx)?;
4319
4320 let editor = editor_handle.read(cx);
4321 let head = editor.newest_selection::<usize>(cx).head();
4322 let (buffer, head) = editor.buffer.read(cx).text_anchor_for_position(head, cx)?;
4323 let replica_id = editor.replica_id(cx);
4324
4325 let references = workspace
4326 .project()
4327 .update(cx, |project, cx| project.references(&buffer, head, cx));
4328 Some(cx.spawn(|workspace, mut cx| async move {
4329 let mut locations = references.await?;
4330 if locations.is_empty() {
4331 return Ok(());
4332 }
4333
4334 locations.sort_by_key(|location| location.buffer.id());
4335 let mut locations = locations.into_iter().peekable();
4336 let mut ranges_to_highlight = Vec::new();
4337
4338 let excerpt_buffer = cx.add_model(|cx| {
4339 let mut symbol_name = None;
4340 let mut multibuffer = MultiBuffer::new(replica_id);
4341 while let Some(location) = locations.next() {
4342 let buffer = location.buffer.read(cx);
4343 let mut ranges_for_buffer = Vec::new();
4344 let range = location.range.to_offset(buffer);
4345 ranges_for_buffer.push(range.clone());
4346 if symbol_name.is_none() {
4347 symbol_name = Some(buffer.text_for_range(range).collect::<String>());
4348 }
4349
4350 while let Some(next_location) = locations.peek() {
4351 if next_location.buffer == location.buffer {
4352 ranges_for_buffer.push(next_location.range.to_offset(buffer));
4353 locations.next();
4354 } else {
4355 break;
4356 }
4357 }
4358
4359 ranges_for_buffer.sort_by_key(|range| (range.start, Reverse(range.end)));
4360 ranges_to_highlight.extend(multibuffer.push_excerpts_with_context_lines(
4361 location.buffer.clone(),
4362 ranges_for_buffer,
4363 1,
4364 cx,
4365 ));
4366 }
4367 multibuffer.with_title(format!("References to `{}`", symbol_name.unwrap()))
4368 });
4369
4370 workspace.update(&mut cx, |workspace, cx| {
4371 let editor = workspace.open_item(MultiBufferItemHandle(excerpt_buffer), cx);
4372 if let Some(editor) = editor.act_as::<Self>(cx) {
4373 editor.update(cx, |editor, cx| {
4374 let color = editor.style(cx).highlighted_line_background;
4375 editor.highlight_background::<Self>(ranges_to_highlight, color, cx);
4376 });
4377 }
4378 });
4379
4380 Ok(())
4381 }))
4382 }
4383
4384 pub fn rename(&mut self, _: &Rename, cx: &mut ViewContext<Self>) -> Option<Task<Result<()>>> {
4385 use language::ToOffset as _;
4386
4387 let project = self.project.clone()?;
4388 let selection = self.newest_anchor_selection().clone();
4389 let (cursor_buffer, cursor_buffer_position) = self
4390 .buffer
4391 .read(cx)
4392 .text_anchor_for_position(selection.head(), cx)?;
4393 let (tail_buffer, _) = self
4394 .buffer
4395 .read(cx)
4396 .text_anchor_for_position(selection.tail(), cx)?;
4397 if tail_buffer != cursor_buffer {
4398 return None;
4399 }
4400
4401 let snapshot = cursor_buffer.read(cx).snapshot();
4402 let cursor_buffer_offset = cursor_buffer_position.to_offset(&snapshot);
4403 let prepare_rename = project.update(cx, |project, cx| {
4404 project.prepare_rename(cursor_buffer, cursor_buffer_offset, cx)
4405 });
4406
4407 Some(cx.spawn(|this, mut cx| async move {
4408 if let Some(rename_range) = prepare_rename.await? {
4409 let rename_buffer_range = rename_range.to_offset(&snapshot);
4410 let cursor_offset_in_rename_range =
4411 cursor_buffer_offset.saturating_sub(rename_buffer_range.start);
4412
4413 this.update(&mut cx, |this, cx| {
4414 this.take_rename(cx);
4415 let style = this.style(cx);
4416 let buffer = this.buffer.read(cx).read(cx);
4417 let cursor_offset = selection.head().to_offset(&buffer);
4418 let rename_start = cursor_offset.saturating_sub(cursor_offset_in_rename_range);
4419 let rename_end = rename_start + rename_buffer_range.len();
4420 let range = buffer.anchor_before(rename_start)..buffer.anchor_after(rename_end);
4421 let mut old_highlight_id = None;
4422 let old_name = buffer
4423 .chunks(rename_start..rename_end, true)
4424 .map(|chunk| {
4425 if old_highlight_id.is_none() {
4426 old_highlight_id = chunk.syntax_highlight_id;
4427 }
4428 chunk.text
4429 })
4430 .collect();
4431
4432 drop(buffer);
4433
4434 // Position the selection in the rename editor so that it matches the current selection.
4435 let rename_editor = cx.add_view(|cx| {
4436 let mut editor = Editor::single_line(this.settings.clone(), None, cx);
4437 if let Some(old_highlight_id) = old_highlight_id {
4438 editor.override_text_style =
4439 Some(Box::new(move |style| old_highlight_id.style(&style.syntax)));
4440 }
4441 editor
4442 .buffer
4443 .update(cx, |buffer, cx| buffer.edit([0..0], &old_name, cx));
4444 editor.select_all(&SelectAll, cx);
4445 editor
4446 });
4447
4448 let ranges = this
4449 .clear_background_highlights::<DocumentHighlightWrite>(cx)
4450 .into_iter()
4451 .flat_map(|(_, ranges)| ranges)
4452 .chain(
4453 this.clear_background_highlights::<DocumentHighlightRead>(cx)
4454 .into_iter()
4455 .flat_map(|(_, ranges)| ranges),
4456 )
4457 .collect();
4458 this.highlight_text::<Rename>(
4459 ranges,
4460 HighlightStyle {
4461 fade_out: Some(style.rename_fade),
4462 ..Default::default()
4463 },
4464 cx,
4465 );
4466 this.update_selections(
4467 vec![Selection {
4468 id: selection.id,
4469 start: rename_end,
4470 end: rename_end,
4471 reversed: false,
4472 goal: SelectionGoal::None,
4473 }],
4474 None,
4475 cx,
4476 );
4477 cx.focus(&rename_editor);
4478 let block_id = this.insert_blocks(
4479 [BlockProperties {
4480 position: range.start.clone(),
4481 height: 1,
4482 render: Arc::new({
4483 let editor = rename_editor.clone();
4484 move |cx: &BlockContext| {
4485 ChildView::new(editor.clone())
4486 .contained()
4487 .with_padding_left(cx.anchor_x)
4488 .boxed()
4489 }
4490 }),
4491 disposition: BlockDisposition::Below,
4492 }],
4493 cx,
4494 )[0];
4495 this.pending_rename = Some(RenameState {
4496 range,
4497 old_name,
4498 editor: rename_editor,
4499 block_id,
4500 });
4501 });
4502 }
4503
4504 Ok(())
4505 }))
4506 }
4507
4508 pub fn confirm_rename(
4509 workspace: &mut Workspace,
4510 _: &ConfirmRename,
4511 cx: &mut ViewContext<Workspace>,
4512 ) -> Option<Task<Result<()>>> {
4513 let editor = workspace.active_item(cx)?.act_as::<Editor>(cx)?;
4514
4515 let (buffer, range, old_name, new_name) = editor.update(cx, |editor, cx| {
4516 let rename = editor.take_rename(cx)?;
4517 let buffer = editor.buffer.read(cx);
4518 let (start_buffer, start) =
4519 buffer.text_anchor_for_position(rename.range.start.clone(), cx)?;
4520 let (end_buffer, end) =
4521 buffer.text_anchor_for_position(rename.range.end.clone(), cx)?;
4522 if start_buffer == end_buffer {
4523 let new_name = rename.editor.read(cx).text(cx);
4524 Some((start_buffer, start..end, rename.old_name, new_name))
4525 } else {
4526 None
4527 }
4528 })?;
4529
4530 let rename = workspace.project().clone().update(cx, |project, cx| {
4531 project.perform_rename(
4532 buffer.clone(),
4533 range.start.clone(),
4534 new_name.clone(),
4535 true,
4536 cx,
4537 )
4538 });
4539
4540 Some(cx.spawn(|workspace, mut cx| async move {
4541 let project_transaction = rename.await?;
4542 Self::open_project_transaction(
4543 editor.clone(),
4544 workspace,
4545 project_transaction,
4546 format!("Rename: {} → {}", old_name, new_name),
4547 cx.clone(),
4548 )
4549 .await?;
4550
4551 editor.update(&mut cx, |editor, cx| {
4552 editor.refresh_document_highlights(cx);
4553 });
4554 Ok(())
4555 }))
4556 }
4557
4558 fn take_rename(&mut self, cx: &mut ViewContext<Self>) -> Option<RenameState> {
4559 let rename = self.pending_rename.take()?;
4560 self.remove_blocks([rename.block_id].into_iter().collect(), cx);
4561 self.clear_text_highlights::<Rename>(cx);
4562
4563 let selection_in_rename_editor = rename.editor.read(cx).newest_selection::<usize>(cx);
4564
4565 // Update the selection to match the position of the selection inside
4566 // the rename editor.
4567 let snapshot = self.buffer.read(cx).read(cx);
4568 let rename_range = rename.range.to_offset(&snapshot);
4569 let start = snapshot
4570 .clip_offset(
4571 rename_range.start + selection_in_rename_editor.start,
4572 Bias::Left,
4573 )
4574 .min(rename_range.end);
4575 let end = snapshot
4576 .clip_offset(
4577 rename_range.start + selection_in_rename_editor.end,
4578 Bias::Left,
4579 )
4580 .min(rename_range.end);
4581 drop(snapshot);
4582
4583 self.update_selections(
4584 vec![Selection {
4585 id: self.newest_anchor_selection().id,
4586 start,
4587 end,
4588 reversed: selection_in_rename_editor.reversed,
4589 goal: SelectionGoal::None,
4590 }],
4591 None,
4592 cx,
4593 );
4594
4595 Some(rename)
4596 }
4597
4598 fn invalidate_rename_range(
4599 &mut self,
4600 buffer: &MultiBufferSnapshot,
4601 cx: &mut ViewContext<Self>,
4602 ) {
4603 if let Some(rename) = self.pending_rename.as_ref() {
4604 if self.selections.len() == 1 {
4605 let head = self.selections[0].head().to_offset(buffer);
4606 let range = rename.range.to_offset(buffer).to_inclusive();
4607 if range.contains(&head) {
4608 return;
4609 }
4610 }
4611 let rename = self.pending_rename.take().unwrap();
4612 self.remove_blocks([rename.block_id].into_iter().collect(), cx);
4613 self.clear_background_highlights::<Rename>(cx);
4614 }
4615 }
4616
4617 #[cfg(any(test, feature = "test-support"))]
4618 pub fn pending_rename(&self) -> Option<&RenameState> {
4619 self.pending_rename.as_ref()
4620 }
4621
4622 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
4623 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
4624 let buffer = self.buffer.read(cx).snapshot(cx);
4625 let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
4626 let is_valid = buffer
4627 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone())
4628 .any(|entry| {
4629 entry.diagnostic.is_primary
4630 && !entry.range.is_empty()
4631 && entry.range.start == primary_range_start
4632 && entry.diagnostic.message == active_diagnostics.primary_message
4633 });
4634
4635 if is_valid != active_diagnostics.is_valid {
4636 active_diagnostics.is_valid = is_valid;
4637 let mut new_styles = HashMap::default();
4638 for (block_id, diagnostic) in &active_diagnostics.blocks {
4639 new_styles.insert(
4640 *block_id,
4641 diagnostic_block_renderer(
4642 diagnostic.clone(),
4643 is_valid,
4644 self.settings.clone(),
4645 ),
4646 );
4647 }
4648 self.display_map
4649 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
4650 }
4651 }
4652 }
4653
4654 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) {
4655 self.dismiss_diagnostics(cx);
4656 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
4657 let buffer = self.buffer.read(cx).snapshot(cx);
4658
4659 let mut primary_range = None;
4660 let mut primary_message = None;
4661 let mut group_end = Point::zero();
4662 let diagnostic_group = buffer
4663 .diagnostic_group::<Point>(group_id)
4664 .map(|entry| {
4665 if entry.range.end > group_end {
4666 group_end = entry.range.end;
4667 }
4668 if entry.diagnostic.is_primary {
4669 primary_range = Some(entry.range.clone());
4670 primary_message = Some(entry.diagnostic.message.clone());
4671 }
4672 entry
4673 })
4674 .collect::<Vec<_>>();
4675 let primary_range = primary_range.unwrap();
4676 let primary_message = primary_message.unwrap();
4677 let primary_range =
4678 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
4679
4680 let blocks = display_map
4681 .insert_blocks(
4682 diagnostic_group.iter().map(|entry| {
4683 let diagnostic = entry.diagnostic.clone();
4684 let message_height = diagnostic.message.lines().count() as u8;
4685 BlockProperties {
4686 position: buffer.anchor_after(entry.range.start),
4687 height: message_height,
4688 render: diagnostic_block_renderer(
4689 diagnostic,
4690 true,
4691 self.settings.clone(),
4692 ),
4693 disposition: BlockDisposition::Below,
4694 }
4695 }),
4696 cx,
4697 )
4698 .into_iter()
4699 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
4700 .collect();
4701
4702 Some(ActiveDiagnosticGroup {
4703 primary_range,
4704 primary_message,
4705 blocks,
4706 is_valid: true,
4707 })
4708 });
4709 }
4710
4711 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
4712 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
4713 self.display_map.update(cx, |display_map, cx| {
4714 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
4715 });
4716 cx.notify();
4717 }
4718 }
4719
4720 fn build_columnar_selection(
4721 &mut self,
4722 display_map: &DisplaySnapshot,
4723 row: u32,
4724 columns: &Range<u32>,
4725 reversed: bool,
4726 ) -> Option<Selection<Point>> {
4727 let is_empty = columns.start == columns.end;
4728 let line_len = display_map.line_len(row);
4729 if columns.start < line_len || (is_empty && columns.start == line_len) {
4730 let start = DisplayPoint::new(row, columns.start);
4731 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
4732 Some(Selection {
4733 id: post_inc(&mut self.next_selection_id),
4734 start: start.to_point(display_map),
4735 end: end.to_point(display_map),
4736 reversed,
4737 goal: SelectionGoal::ColumnRange {
4738 start: columns.start,
4739 end: columns.end,
4740 },
4741 })
4742 } else {
4743 None
4744 }
4745 }
4746
4747 pub fn local_selections_in_range(
4748 &self,
4749 range: Range<Anchor>,
4750 display_map: &DisplaySnapshot,
4751 ) -> Vec<Selection<Point>> {
4752 let buffer = &display_map.buffer_snapshot;
4753
4754 let start_ix = match self
4755 .selections
4756 .binary_search_by(|probe| probe.end.cmp(&range.start, &buffer).unwrap())
4757 {
4758 Ok(ix) | Err(ix) => ix,
4759 };
4760 let end_ix = match self
4761 .selections
4762 .binary_search_by(|probe| probe.start.cmp(&range.end, &buffer).unwrap())
4763 {
4764 Ok(ix) => ix + 1,
4765 Err(ix) => ix,
4766 };
4767
4768 fn point_selection(
4769 selection: &Selection<Anchor>,
4770 buffer: &MultiBufferSnapshot,
4771 ) -> Selection<Point> {
4772 let start = selection.start.to_point(&buffer);
4773 let end = selection.end.to_point(&buffer);
4774 Selection {
4775 id: selection.id,
4776 start,
4777 end,
4778 reversed: selection.reversed,
4779 goal: selection.goal,
4780 }
4781 }
4782
4783 self.selections[start_ix..end_ix]
4784 .iter()
4785 .chain(
4786 self.pending_selection
4787 .as_ref()
4788 .map(|pending| &pending.selection),
4789 )
4790 .map(|s| point_selection(s, &buffer))
4791 .collect()
4792 }
4793
4794 pub fn local_selections<'a, D>(&self, cx: &'a AppContext) -> Vec<Selection<D>>
4795 where
4796 D: 'a + TextDimension + Ord + Sub<D, Output = D>,
4797 {
4798 let buffer = self.buffer.read(cx).snapshot(cx);
4799 let mut selections = self
4800 .resolve_selections::<D, _>(self.selections.iter(), &buffer)
4801 .peekable();
4802
4803 let mut pending_selection = self.pending_selection::<D>(&buffer);
4804
4805 iter::from_fn(move || {
4806 if let Some(pending) = pending_selection.as_mut() {
4807 while let Some(next_selection) = selections.peek() {
4808 if pending.start <= next_selection.end && pending.end >= next_selection.start {
4809 let next_selection = selections.next().unwrap();
4810 if next_selection.start < pending.start {
4811 pending.start = next_selection.start;
4812 }
4813 if next_selection.end > pending.end {
4814 pending.end = next_selection.end;
4815 }
4816 } else if next_selection.end < pending.start {
4817 return selections.next();
4818 } else {
4819 break;
4820 }
4821 }
4822
4823 pending_selection.take()
4824 } else {
4825 selections.next()
4826 }
4827 })
4828 .collect()
4829 }
4830
4831 fn resolve_selections<'a, D, I>(
4832 &self,
4833 selections: I,
4834 snapshot: &MultiBufferSnapshot,
4835 ) -> impl 'a + Iterator<Item = Selection<D>>
4836 where
4837 D: TextDimension + Ord + Sub<D, Output = D>,
4838 I: 'a + IntoIterator<Item = &'a Selection<Anchor>>,
4839 {
4840 let (to_summarize, selections) = selections.into_iter().tee();
4841 let mut summaries = snapshot
4842 .summaries_for_anchors::<D, _>(to_summarize.flat_map(|s| [&s.start, &s.end]))
4843 .into_iter();
4844 selections.map(move |s| Selection {
4845 id: s.id,
4846 start: summaries.next().unwrap(),
4847 end: summaries.next().unwrap(),
4848 reversed: s.reversed,
4849 goal: s.goal,
4850 })
4851 }
4852
4853 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4854 &self,
4855 snapshot: &MultiBufferSnapshot,
4856 ) -> Option<Selection<D>> {
4857 self.pending_selection
4858 .as_ref()
4859 .map(|pending| self.resolve_selection(&pending.selection, &snapshot))
4860 }
4861
4862 fn resolve_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4863 &self,
4864 selection: &Selection<Anchor>,
4865 buffer: &MultiBufferSnapshot,
4866 ) -> Selection<D> {
4867 Selection {
4868 id: selection.id,
4869 start: selection.start.summary::<D>(&buffer),
4870 end: selection.end.summary::<D>(&buffer),
4871 reversed: selection.reversed,
4872 goal: selection.goal,
4873 }
4874 }
4875
4876 fn selection_count<'a>(&self) -> usize {
4877 let mut count = self.selections.len();
4878 if self.pending_selection.is_some() {
4879 count += 1;
4880 }
4881 count
4882 }
4883
4884 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4885 &self,
4886 cx: &AppContext,
4887 ) -> Selection<D> {
4888 let snapshot = self.buffer.read(cx).read(cx);
4889 self.selections
4890 .iter()
4891 .min_by_key(|s| s.id)
4892 .map(|selection| self.resolve_selection(selection, &snapshot))
4893 .or_else(|| self.pending_selection(&snapshot))
4894 .unwrap()
4895 }
4896
4897 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4898 &self,
4899 cx: &AppContext,
4900 ) -> Selection<D> {
4901 self.resolve_selection(
4902 self.newest_anchor_selection(),
4903 &self.buffer.read(cx).read(cx),
4904 )
4905 }
4906
4907 pub fn newest_selection_with_snapshot<D: TextDimension + Ord + Sub<D, Output = D>>(
4908 &self,
4909 snapshot: &MultiBufferSnapshot,
4910 ) -> Selection<D> {
4911 self.resolve_selection(self.newest_anchor_selection(), snapshot)
4912 }
4913
4914 pub fn newest_anchor_selection(&self) -> &Selection<Anchor> {
4915 self.pending_selection
4916 .as_ref()
4917 .map(|s| &s.selection)
4918 .or_else(|| self.selections.iter().max_by_key(|s| s.id))
4919 .unwrap()
4920 }
4921
4922 pub fn update_selections<T>(
4923 &mut self,
4924 mut selections: Vec<Selection<T>>,
4925 autoscroll: Option<Autoscroll>,
4926 cx: &mut ViewContext<Self>,
4927 ) where
4928 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
4929 {
4930 let buffer = self.buffer.read(cx).snapshot(cx);
4931 selections.sort_unstable_by_key(|s| s.start);
4932
4933 // Merge overlapping selections.
4934 let mut i = 1;
4935 while i < selections.len() {
4936 if selections[i - 1].end >= selections[i].start {
4937 let removed = selections.remove(i);
4938 if removed.start < selections[i - 1].start {
4939 selections[i - 1].start = removed.start;
4940 }
4941 if removed.end > selections[i - 1].end {
4942 selections[i - 1].end = removed.end;
4943 }
4944 } else {
4945 i += 1;
4946 }
4947 }
4948
4949 if let Some(autoscroll) = autoscroll {
4950 self.request_autoscroll(autoscroll, cx);
4951 }
4952
4953 self.set_selections(
4954 Arc::from_iter(selections.into_iter().map(|selection| {
4955 let end_bias = if selection.end > selection.start {
4956 Bias::Left
4957 } else {
4958 Bias::Right
4959 };
4960 Selection {
4961 id: selection.id,
4962 start: buffer.anchor_after(selection.start),
4963 end: buffer.anchor_at(selection.end, end_bias),
4964 reversed: selection.reversed,
4965 goal: selection.goal,
4966 }
4967 })),
4968 None,
4969 cx,
4970 );
4971 }
4972
4973 /// Compute new ranges for any selections that were located in excerpts that have
4974 /// since been removed.
4975 ///
4976 /// Returns a `HashMap` indicating which selections whose former head position
4977 /// was no longer present. The keys of the map are selection ids. The values are
4978 /// the id of the new excerpt where the head of the selection has been moved.
4979 pub fn refresh_selections(&mut self, cx: &mut ViewContext<Self>) -> HashMap<usize, ExcerptId> {
4980 let snapshot = self.buffer.read(cx).read(cx);
4981 let anchors_with_status = snapshot.refresh_anchors(
4982 self.selections
4983 .iter()
4984 .flat_map(|selection| [&selection.start, &selection.end]),
4985 );
4986 let offsets =
4987 snapshot.summaries_for_anchors::<usize, _>(anchors_with_status.iter().map(|a| &a.1));
4988 let offsets = offsets.chunks(2);
4989 let statuses = anchors_with_status
4990 .chunks(2)
4991 .map(|a| (a[0].0 / 2, a[0].2, a[1].2));
4992
4993 let mut selections_with_lost_position = HashMap::default();
4994 let new_selections = offsets
4995 .zip(statuses)
4996 .map(|(offsets, (selection_ix, kept_start, kept_end))| {
4997 let selection = &self.selections[selection_ix];
4998 let kept_head = if selection.reversed {
4999 kept_start
5000 } else {
5001 kept_end
5002 };
5003 if !kept_head {
5004 selections_with_lost_position
5005 .insert(selection.id, selection.head().excerpt_id.clone());
5006 }
5007
5008 Selection {
5009 id: selection.id,
5010 start: offsets[0],
5011 end: offsets[1],
5012 reversed: selection.reversed,
5013 goal: selection.goal,
5014 }
5015 })
5016 .collect();
5017 drop(snapshot);
5018 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
5019 selections_with_lost_position
5020 }
5021
5022 fn set_selections(
5023 &mut self,
5024 selections: Arc<[Selection<Anchor>]>,
5025 pending_selection: Option<PendingSelection>,
5026 cx: &mut ViewContext<Self>,
5027 ) {
5028 let old_cursor_position = self.newest_anchor_selection().head();
5029
5030 self.selections = selections;
5031 self.pending_selection = pending_selection;
5032 if self.focused {
5033 self.buffer.update(cx, |buffer, cx| {
5034 buffer.set_active_selections(&self.selections, cx)
5035 });
5036 }
5037
5038 let display_map = self
5039 .display_map
5040 .update(cx, |display_map, cx| display_map.snapshot(cx));
5041 let buffer = &display_map.buffer_snapshot;
5042 self.add_selections_state = None;
5043 self.select_next_state = None;
5044 self.select_larger_syntax_node_stack.clear();
5045 self.autoclose_stack.invalidate(&self.selections, &buffer);
5046 self.snippet_stack.invalidate(&self.selections, &buffer);
5047 self.invalidate_rename_range(&buffer, cx);
5048
5049 let new_cursor_position = self.newest_anchor_selection().head();
5050
5051 self.push_to_nav_history(
5052 old_cursor_position.clone(),
5053 Some(new_cursor_position.to_point(&buffer)),
5054 cx,
5055 );
5056
5057 let completion_menu = match self.context_menu.as_mut() {
5058 Some(ContextMenu::Completions(menu)) => Some(menu),
5059 _ => {
5060 self.context_menu.take();
5061 None
5062 }
5063 };
5064
5065 if let Some(completion_menu) = completion_menu {
5066 let cursor_position = new_cursor_position.to_offset(&buffer);
5067 let (word_range, kind) =
5068 buffer.surrounding_word(completion_menu.initial_position.clone());
5069 if kind == Some(CharKind::Word) && word_range.to_inclusive().contains(&cursor_position)
5070 {
5071 let query = Self::completion_query(&buffer, cursor_position);
5072 cx.background()
5073 .block(completion_menu.filter(query.as_deref(), cx.background().clone()));
5074 self.show_completions(&ShowCompletions, cx);
5075 } else {
5076 self.hide_context_menu(cx);
5077 }
5078 }
5079
5080 if old_cursor_position.to_display_point(&display_map).row()
5081 != new_cursor_position.to_display_point(&display_map).row()
5082 {
5083 self.available_code_actions.take();
5084 }
5085 self.refresh_code_actions(cx);
5086 self.refresh_document_highlights(cx);
5087
5088 self.pause_cursor_blinking(cx);
5089 cx.emit(Event::SelectionsChanged);
5090 }
5091
5092 pub fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
5093 self.autoscroll_request = Some(autoscroll);
5094 cx.notify();
5095 }
5096
5097 fn start_transaction(&mut self, cx: &mut ViewContext<Self>) {
5098 self.start_transaction_at(Instant::now(), cx);
5099 }
5100
5101 fn start_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
5102 self.end_selection(cx);
5103 if let Some(tx_id) = self
5104 .buffer
5105 .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
5106 {
5107 self.selection_history
5108 .insert(tx_id, (self.selections.clone(), None));
5109 }
5110 }
5111
5112 fn end_transaction(&mut self, cx: &mut ViewContext<Self>) {
5113 self.end_transaction_at(Instant::now(), cx);
5114 }
5115
5116 fn end_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
5117 if let Some(tx_id) = self
5118 .buffer
5119 .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
5120 {
5121 if let Some((_, end_selections)) = self.selection_history.get_mut(&tx_id) {
5122 *end_selections = Some(self.selections.clone());
5123 } else {
5124 log::error!("unexpectedly ended a transaction that wasn't started by this editor");
5125 }
5126 }
5127 }
5128
5129 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
5130 log::info!("Editor::page_up");
5131 }
5132
5133 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
5134 log::info!("Editor::page_down");
5135 }
5136
5137 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
5138 let mut fold_ranges = Vec::new();
5139
5140 let selections = self.local_selections::<Point>(cx);
5141 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
5142 for selection in selections {
5143 let range = selection.display_range(&display_map).sorted();
5144 let buffer_start_row = range.start.to_point(&display_map).row;
5145
5146 for row in (0..=range.end.row()).rev() {
5147 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
5148 let fold_range = self.foldable_range_for_line(&display_map, row);
5149 if fold_range.end.row >= buffer_start_row {
5150 fold_ranges.push(fold_range);
5151 if row <= range.start.row() {
5152 break;
5153 }
5154 }
5155 }
5156 }
5157 }
5158
5159 self.fold_ranges(fold_ranges, cx);
5160 }
5161
5162 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
5163 let selections = self.local_selections::<Point>(cx);
5164 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
5165 let buffer = &display_map.buffer_snapshot;
5166 let ranges = selections
5167 .iter()
5168 .map(|s| {
5169 let range = s.display_range(&display_map).sorted();
5170 let mut start = range.start.to_point(&display_map);
5171 let mut end = range.end.to_point(&display_map);
5172 start.column = 0;
5173 end.column = buffer.line_len(end.row);
5174 start..end
5175 })
5176 .collect::<Vec<_>>();
5177 self.unfold_ranges(ranges, cx);
5178 }
5179
5180 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
5181 let max_point = display_map.max_point();
5182 if display_row >= max_point.row() {
5183 false
5184 } else {
5185 let (start_indent, is_blank) = display_map.line_indent(display_row);
5186 if is_blank {
5187 false
5188 } else {
5189 for display_row in display_row + 1..=max_point.row() {
5190 let (indent, is_blank) = display_map.line_indent(display_row);
5191 if !is_blank {
5192 return indent > start_indent;
5193 }
5194 }
5195 false
5196 }
5197 }
5198 }
5199
5200 fn foldable_range_for_line(
5201 &self,
5202 display_map: &DisplaySnapshot,
5203 start_row: u32,
5204 ) -> Range<Point> {
5205 let max_point = display_map.max_point();
5206
5207 let (start_indent, _) = display_map.line_indent(start_row);
5208 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
5209 let mut end = None;
5210 for row in start_row + 1..=max_point.row() {
5211 let (indent, is_blank) = display_map.line_indent(row);
5212 if !is_blank && indent <= start_indent {
5213 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
5214 break;
5215 }
5216 }
5217
5218 let end = end.unwrap_or(max_point);
5219 return start.to_point(display_map)..end.to_point(display_map);
5220 }
5221
5222 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
5223 let selections = self.local_selections::<Point>(cx);
5224 let ranges = selections.into_iter().map(|s| s.start..s.end);
5225 self.fold_ranges(ranges, cx);
5226 }
5227
5228 fn fold_ranges<T: ToOffset>(
5229 &mut self,
5230 ranges: impl IntoIterator<Item = Range<T>>,
5231 cx: &mut ViewContext<Self>,
5232 ) {
5233 let mut ranges = ranges.into_iter().peekable();
5234 if ranges.peek().is_some() {
5235 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
5236 self.request_autoscroll(Autoscroll::Fit, cx);
5237 cx.notify();
5238 }
5239 }
5240
5241 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
5242 if !ranges.is_empty() {
5243 self.display_map
5244 .update(cx, |map, cx| map.unfold(ranges, cx));
5245 self.request_autoscroll(Autoscroll::Fit, cx);
5246 cx.notify();
5247 }
5248 }
5249
5250 pub fn insert_blocks(
5251 &mut self,
5252 blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
5253 cx: &mut ViewContext<Self>,
5254 ) -> Vec<BlockId> {
5255 let blocks = self
5256 .display_map
5257 .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
5258 self.request_autoscroll(Autoscroll::Fit, cx);
5259 blocks
5260 }
5261
5262 pub fn replace_blocks(
5263 &mut self,
5264 blocks: HashMap<BlockId, RenderBlock>,
5265 cx: &mut ViewContext<Self>,
5266 ) {
5267 self.display_map
5268 .update(cx, |display_map, _| display_map.replace_blocks(blocks));
5269 self.request_autoscroll(Autoscroll::Fit, cx);
5270 }
5271
5272 pub fn remove_blocks(&mut self, block_ids: HashSet<BlockId>, cx: &mut ViewContext<Self>) {
5273 self.display_map.update(cx, |display_map, cx| {
5274 display_map.remove_blocks(block_ids, cx)
5275 });
5276 }
5277
5278 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
5279 self.display_map
5280 .update(cx, |map, cx| map.snapshot(cx))
5281 .longest_row()
5282 }
5283
5284 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
5285 self.display_map
5286 .update(cx, |map, cx| map.snapshot(cx))
5287 .max_point()
5288 }
5289
5290 pub fn text(&self, cx: &AppContext) -> String {
5291 self.buffer.read(cx).read(cx).text()
5292 }
5293
5294 pub fn set_text(&mut self, text: impl Into<String>, cx: &mut ViewContext<Self>) {
5295 self.buffer
5296 .read(cx)
5297 .as_singleton()
5298 .expect("you can only call set_text on editors for singleton buffers")
5299 .update(cx, |buffer, cx| buffer.set_text(text, cx));
5300 }
5301
5302 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
5303 self.display_map
5304 .update(cx, |map, cx| map.snapshot(cx))
5305 .text()
5306 }
5307
5308 pub fn soft_wrap_mode(&self, cx: &AppContext) -> SoftWrap {
5309 let language = self.language(cx);
5310 let settings = self.settings.borrow();
5311 let mode = self
5312 .soft_wrap_mode_override
5313 .unwrap_or_else(|| settings.soft_wrap(language));
5314 match mode {
5315 settings::SoftWrap::None => SoftWrap::None,
5316 settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
5317 settings::SoftWrap::PreferredLineLength => {
5318 SoftWrap::Column(settings.preferred_line_length(language))
5319 }
5320 }
5321 }
5322
5323 pub fn set_soft_wrap_mode(&mut self, mode: settings::SoftWrap, cx: &mut ViewContext<Self>) {
5324 self.soft_wrap_mode_override = Some(mode);
5325 cx.notify();
5326 }
5327
5328 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
5329 self.display_map
5330 .update(cx, |map, cx| map.set_wrap_width(width, cx))
5331 }
5332
5333 pub fn highlight_rows(&mut self, rows: Option<Range<u32>>) {
5334 self.highlighted_rows = rows;
5335 }
5336
5337 pub fn highlighted_rows(&self) -> Option<Range<u32>> {
5338 self.highlighted_rows.clone()
5339 }
5340
5341 pub fn highlight_background<T: 'static>(
5342 &mut self,
5343 ranges: Vec<Range<Anchor>>,
5344 color: Color,
5345 cx: &mut ViewContext<Self>,
5346 ) {
5347 self.background_highlights
5348 .insert(TypeId::of::<T>(), (color, ranges));
5349 cx.notify();
5350 }
5351
5352 pub fn clear_background_highlights<T: 'static>(
5353 &mut self,
5354 cx: &mut ViewContext<Self>,
5355 ) -> Option<(Color, Vec<Range<Anchor>>)> {
5356 cx.notify();
5357 self.background_highlights.remove(&TypeId::of::<T>())
5358 }
5359
5360 #[cfg(feature = "test-support")]
5361 pub fn all_background_highlights(
5362 &mut self,
5363 cx: &mut ViewContext<Self>,
5364 ) -> Vec<(Range<DisplayPoint>, Color)> {
5365 let snapshot = self.snapshot(cx);
5366 let buffer = &snapshot.buffer_snapshot;
5367 let start = buffer.anchor_before(0);
5368 let end = buffer.anchor_after(buffer.len());
5369 self.background_highlights_in_range(start..end, &snapshot)
5370 }
5371
5372 pub fn background_highlights_for_type<T: 'static>(&self) -> Option<(Color, &[Range<Anchor>])> {
5373 self.background_highlights
5374 .get(&TypeId::of::<T>())
5375 .map(|(color, ranges)| (*color, ranges.as_slice()))
5376 }
5377
5378 pub fn background_highlights_in_range(
5379 &self,
5380 search_range: Range<Anchor>,
5381 display_snapshot: &DisplaySnapshot,
5382 ) -> Vec<(Range<DisplayPoint>, Color)> {
5383 let mut results = Vec::new();
5384 let buffer = &display_snapshot.buffer_snapshot;
5385 for (color, ranges) in self.background_highlights.values() {
5386 let start_ix = match ranges.binary_search_by(|probe| {
5387 let cmp = probe.end.cmp(&search_range.start, &buffer).unwrap();
5388 if cmp.is_gt() {
5389 Ordering::Greater
5390 } else {
5391 Ordering::Less
5392 }
5393 }) {
5394 Ok(i) | Err(i) => i,
5395 };
5396 for range in &ranges[start_ix..] {
5397 if range.start.cmp(&search_range.end, &buffer).unwrap().is_ge() {
5398 break;
5399 }
5400 let start = range
5401 .start
5402 .to_point(buffer)
5403 .to_display_point(display_snapshot);
5404 let end = range
5405 .end
5406 .to_point(buffer)
5407 .to_display_point(display_snapshot);
5408 results.push((start..end, *color))
5409 }
5410 }
5411 results
5412 }
5413
5414 pub fn highlight_text<T: 'static>(
5415 &mut self,
5416 ranges: Vec<Range<Anchor>>,
5417 style: HighlightStyle,
5418 cx: &mut ViewContext<Self>,
5419 ) {
5420 self.display_map.update(cx, |map, _| {
5421 map.highlight_text(TypeId::of::<T>(), ranges, style)
5422 });
5423 cx.notify();
5424 }
5425
5426 pub fn clear_text_highlights<T: 'static>(
5427 &mut self,
5428 cx: &mut ViewContext<Self>,
5429 ) -> Option<Arc<(HighlightStyle, Vec<Range<Anchor>>)>> {
5430 cx.notify();
5431 self.display_map
5432 .update(cx, |map, _| map.clear_text_highlights(TypeId::of::<T>()))
5433 }
5434
5435 fn next_blink_epoch(&mut self) -> usize {
5436 self.blink_epoch += 1;
5437 self.blink_epoch
5438 }
5439
5440 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
5441 if !self.focused {
5442 return;
5443 }
5444
5445 self.show_local_cursors = true;
5446 cx.notify();
5447
5448 let epoch = self.next_blink_epoch();
5449 cx.spawn(|this, mut cx| {
5450 let this = this.downgrade();
5451 async move {
5452 Timer::after(CURSOR_BLINK_INTERVAL).await;
5453 if let Some(this) = this.upgrade(&cx) {
5454 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
5455 }
5456 }
5457 })
5458 .detach();
5459 }
5460
5461 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
5462 if epoch == self.blink_epoch {
5463 self.blinking_paused = false;
5464 self.blink_cursors(epoch, cx);
5465 }
5466 }
5467
5468 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
5469 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
5470 self.show_local_cursors = !self.show_local_cursors;
5471 cx.notify();
5472
5473 let epoch = self.next_blink_epoch();
5474 cx.spawn(|this, mut cx| {
5475 let this = this.downgrade();
5476 async move {
5477 Timer::after(CURSOR_BLINK_INTERVAL).await;
5478 if let Some(this) = this.upgrade(&cx) {
5479 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
5480 }
5481 }
5482 })
5483 .detach();
5484 }
5485 }
5486
5487 pub fn show_local_cursors(&self) -> bool {
5488 self.show_local_cursors
5489 }
5490
5491 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
5492 cx.notify();
5493 }
5494
5495 fn on_buffer_event(
5496 &mut self,
5497 _: ModelHandle<MultiBuffer>,
5498 event: &language::Event,
5499 cx: &mut ViewContext<Self>,
5500 ) {
5501 match event {
5502 language::Event::Edited => {
5503 self.refresh_active_diagnostics(cx);
5504 self.refresh_code_actions(cx);
5505 cx.emit(Event::Edited);
5506 }
5507 language::Event::Dirtied => cx.emit(Event::Dirtied),
5508 language::Event::Saved => cx.emit(Event::Saved),
5509 language::Event::FileHandleChanged => cx.emit(Event::TitleChanged),
5510 language::Event::Reloaded => cx.emit(Event::TitleChanged),
5511 language::Event::Closed => cx.emit(Event::Closed),
5512 language::Event::DiagnosticsUpdated => {
5513 self.refresh_active_diagnostics(cx);
5514 }
5515 _ => {}
5516 }
5517 }
5518
5519 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
5520 cx.notify();
5521 }
5522
5523 pub fn set_searchable(&mut self, searchable: bool) {
5524 self.searchable = searchable;
5525 }
5526
5527 pub fn searchable(&self) -> bool {
5528 self.searchable
5529 }
5530
5531 fn open_excerpts(workspace: &mut Workspace, _: &OpenExcerpts, cx: &mut ViewContext<Workspace>) {
5532 let active_item = workspace.active_item(cx);
5533 let editor_handle = if let Some(editor) = active_item
5534 .as_ref()
5535 .and_then(|item| item.act_as::<Self>(cx))
5536 {
5537 editor
5538 } else {
5539 cx.propagate_action();
5540 return;
5541 };
5542
5543 let editor = editor_handle.read(cx);
5544 let buffer = editor.buffer.read(cx);
5545 if buffer.is_singleton() {
5546 cx.propagate_action();
5547 return;
5548 }
5549
5550 let mut new_selections_by_buffer = HashMap::default();
5551 for selection in editor.local_selections::<usize>(cx) {
5552 for (buffer, mut range) in
5553 buffer.range_to_buffer_ranges(selection.start..selection.end, cx)
5554 {
5555 if selection.reversed {
5556 mem::swap(&mut range.start, &mut range.end);
5557 }
5558 new_selections_by_buffer
5559 .entry(buffer)
5560 .or_insert(Vec::new())
5561 .push(range)
5562 }
5563 }
5564
5565 editor_handle.update(cx, |editor, cx| {
5566 editor.push_to_nav_history(editor.newest_anchor_selection().head(), None, cx);
5567 });
5568 let nav_history = workspace.active_pane().read(cx).nav_history().clone();
5569 nav_history.borrow_mut().disable();
5570
5571 // We defer the pane interaction because we ourselves are a workspace item
5572 // and activating a new item causes the pane to call a method on us reentrantly,
5573 // which panics if we're on the stack.
5574 cx.defer(move |workspace, cx| {
5575 for (ix, (buffer, ranges)) in new_selections_by_buffer.into_iter().enumerate() {
5576 let buffer = BufferItemHandle(buffer);
5577 if ix == 0 && !workspace.activate_pane_for_item(&buffer, cx) {
5578 workspace.activate_next_pane(cx);
5579 }
5580
5581 let editor = workspace
5582 .open_item(buffer, cx)
5583 .downcast::<Editor>()
5584 .unwrap();
5585
5586 editor.update(cx, |editor, cx| {
5587 editor.select_ranges(ranges, Some(Autoscroll::Newest), cx);
5588 });
5589 }
5590
5591 nav_history.borrow_mut().enable();
5592 });
5593 }
5594}
5595
5596impl EditorSnapshot {
5597 pub fn is_focused(&self) -> bool {
5598 self.is_focused
5599 }
5600
5601 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
5602 self.placeholder_text.as_ref()
5603 }
5604
5605 pub fn scroll_position(&self) -> Vector2F {
5606 compute_scroll_position(
5607 &self.display_snapshot,
5608 self.scroll_position,
5609 &self.scroll_top_anchor,
5610 )
5611 }
5612}
5613
5614impl Deref for EditorSnapshot {
5615 type Target = DisplaySnapshot;
5616
5617 fn deref(&self) -> &Self::Target {
5618 &self.display_snapshot
5619 }
5620}
5621
5622fn compute_scroll_position(
5623 snapshot: &DisplaySnapshot,
5624 mut scroll_position: Vector2F,
5625 scroll_top_anchor: &Option<Anchor>,
5626) -> Vector2F {
5627 if let Some(anchor) = scroll_top_anchor {
5628 let scroll_top = anchor.to_display_point(snapshot).row() as f32;
5629 scroll_position.set_y(scroll_top + scroll_position.y());
5630 } else {
5631 scroll_position.set_y(0.);
5632 }
5633 scroll_position
5634}
5635
5636#[derive(Copy, Clone)]
5637pub enum Event {
5638 Activate,
5639 Edited,
5640 Blurred,
5641 Dirtied,
5642 Saved,
5643 TitleChanged,
5644 SelectionsChanged,
5645 Closed,
5646}
5647
5648impl Entity for Editor {
5649 type Event = Event;
5650}
5651
5652impl View for Editor {
5653 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
5654 let style = self.style(cx);
5655 self.display_map.update(cx, |map, cx| {
5656 map.set_font(style.text.font_id, style.text.font_size, cx)
5657 });
5658 EditorElement::new(self.handle.clone(), style.clone(), self.cursor_shape).boxed()
5659 }
5660
5661 fn ui_name() -> &'static str {
5662 "Editor"
5663 }
5664
5665 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
5666 if let Some(rename) = self.pending_rename.as_ref() {
5667 cx.focus(&rename.editor);
5668 } else {
5669 self.focused = true;
5670 self.blink_cursors(self.blink_epoch, cx);
5671 self.buffer.update(cx, |buffer, cx| {
5672 buffer.finalize_last_transaction(cx);
5673 buffer.set_active_selections(&self.selections, cx)
5674 });
5675 }
5676 }
5677
5678 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
5679 self.focused = false;
5680 self.show_local_cursors = false;
5681 self.buffer
5682 .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
5683 self.hide_context_menu(cx);
5684 cx.emit(Event::Blurred);
5685 cx.notify();
5686 }
5687
5688 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
5689 let mut cx = Self::default_keymap_context();
5690 let mode = match self.mode {
5691 EditorMode::SingleLine => "single_line",
5692 EditorMode::AutoHeight { .. } => "auto_height",
5693 EditorMode::Full => "full",
5694 };
5695 cx.map.insert("mode".into(), mode.into());
5696 if self.pending_rename.is_some() {
5697 cx.set.insert("renaming".into());
5698 }
5699 match self.context_menu.as_ref() {
5700 Some(ContextMenu::Completions(_)) => {
5701 cx.set.insert("showing_completions".into());
5702 }
5703 Some(ContextMenu::CodeActions(_)) => {
5704 cx.set.insert("showing_code_actions".into());
5705 }
5706 None => {}
5707 }
5708 cx
5709 }
5710}
5711
5712fn build_style(
5713 settings: &Settings,
5714 get_field_editor_theme: Option<GetFieldEditorTheme>,
5715 override_text_style: Option<&OverrideTextStyle>,
5716 cx: &AppContext,
5717) -> EditorStyle {
5718 let font_cache = cx.font_cache();
5719
5720 let mut theme = settings.theme.editor.clone();
5721 let mut style = if let Some(get_field_editor_theme) = get_field_editor_theme {
5722 let field_editor_theme = get_field_editor_theme(&settings.theme);
5723 theme.text_color = field_editor_theme.text.color;
5724 theme.selection = field_editor_theme.selection;
5725 EditorStyle {
5726 text: field_editor_theme.text,
5727 placeholder_text: field_editor_theme.placeholder_text,
5728 theme,
5729 }
5730 } else {
5731 let font_family_id = settings.buffer_font_family;
5732 let font_family_name = cx.font_cache().family_name(font_family_id).unwrap();
5733 let font_properties = Default::default();
5734 let font_id = font_cache
5735 .select_font(font_family_id, &font_properties)
5736 .unwrap();
5737 let font_size = settings.buffer_font_size;
5738 EditorStyle {
5739 text: TextStyle {
5740 color: settings.theme.editor.text_color,
5741 font_family_name,
5742 font_family_id,
5743 font_id,
5744 font_size,
5745 font_properties,
5746 underline: None,
5747 },
5748 placeholder_text: None,
5749 theme,
5750 }
5751 };
5752
5753 if let Some(highlight_style) =
5754 override_text_style.and_then(|build_style| dbg!(build_style(&style)))
5755 {
5756 if let Some(highlighted) = style
5757 .text
5758 .clone()
5759 .highlight(highlight_style, font_cache)
5760 .log_err()
5761 {
5762 style.text = highlighted;
5763 dbg!(&style.text);
5764 }
5765 }
5766
5767 style
5768}
5769
5770impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
5771 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
5772 let start = self.start.to_point(buffer);
5773 let end = self.end.to_point(buffer);
5774 if self.reversed {
5775 end..start
5776 } else {
5777 start..end
5778 }
5779 }
5780
5781 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
5782 let start = self.start.to_offset(buffer);
5783 let end = self.end.to_offset(buffer);
5784 if self.reversed {
5785 end..start
5786 } else {
5787 start..end
5788 }
5789 }
5790
5791 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
5792 let start = self
5793 .start
5794 .to_point(&map.buffer_snapshot)
5795 .to_display_point(map);
5796 let end = self
5797 .end
5798 .to_point(&map.buffer_snapshot)
5799 .to_display_point(map);
5800 if self.reversed {
5801 end..start
5802 } else {
5803 start..end
5804 }
5805 }
5806
5807 fn spanned_rows(
5808 &self,
5809 include_end_if_at_line_start: bool,
5810 map: &DisplaySnapshot,
5811 ) -> Range<u32> {
5812 let start = self.start.to_point(&map.buffer_snapshot);
5813 let mut end = self.end.to_point(&map.buffer_snapshot);
5814 if !include_end_if_at_line_start && start.row != end.row && end.column == 0 {
5815 end.row -= 1;
5816 }
5817
5818 let buffer_start = map.prev_line_boundary(start).0;
5819 let buffer_end = map.next_line_boundary(end).0;
5820 buffer_start.row..buffer_end.row + 1
5821 }
5822}
5823
5824impl<T: InvalidationRegion> InvalidationStack<T> {
5825 fn invalidate<S>(&mut self, selections: &[Selection<S>], buffer: &MultiBufferSnapshot)
5826 where
5827 S: Clone + ToOffset,
5828 {
5829 while let Some(region) = self.last() {
5830 let all_selections_inside_invalidation_ranges =
5831 if selections.len() == region.ranges().len() {
5832 selections
5833 .iter()
5834 .zip(region.ranges().iter().map(|r| r.to_offset(&buffer)))
5835 .all(|(selection, invalidation_range)| {
5836 let head = selection.head().to_offset(&buffer);
5837 invalidation_range.start <= head && invalidation_range.end >= head
5838 })
5839 } else {
5840 false
5841 };
5842
5843 if all_selections_inside_invalidation_ranges {
5844 break;
5845 } else {
5846 self.pop();
5847 }
5848 }
5849 }
5850}
5851
5852impl<T> Default for InvalidationStack<T> {
5853 fn default() -> Self {
5854 Self(Default::default())
5855 }
5856}
5857
5858impl<T> Deref for InvalidationStack<T> {
5859 type Target = Vec<T>;
5860
5861 fn deref(&self) -> &Self::Target {
5862 &self.0
5863 }
5864}
5865
5866impl<T> DerefMut for InvalidationStack<T> {
5867 fn deref_mut(&mut self) -> &mut Self::Target {
5868 &mut self.0
5869 }
5870}
5871
5872impl InvalidationRegion for BracketPairState {
5873 fn ranges(&self) -> &[Range<Anchor>] {
5874 &self.ranges
5875 }
5876}
5877
5878impl InvalidationRegion for SnippetState {
5879 fn ranges(&self) -> &[Range<Anchor>] {
5880 &self.ranges[self.active_index]
5881 }
5882}
5883
5884impl Deref for EditorStyle {
5885 type Target = theme::Editor;
5886
5887 fn deref(&self) -> &Self::Target {
5888 &self.theme
5889 }
5890}
5891
5892pub fn diagnostic_block_renderer(
5893 diagnostic: Diagnostic,
5894 is_valid: bool,
5895 settings: watch::Receiver<Settings>,
5896) -> RenderBlock {
5897 let mut highlighted_lines = Vec::new();
5898 for line in diagnostic.message.lines() {
5899 highlighted_lines.push(highlight_diagnostic_message(line));
5900 }
5901
5902 Arc::new(move |cx: &BlockContext| {
5903 let settings = settings.borrow();
5904 let theme = &settings.theme.editor;
5905 let style = diagnostic_style(diagnostic.severity, is_valid, theme);
5906 let font_size = (style.text_scale_factor * settings.buffer_font_size).round();
5907 Flex::column()
5908 .with_children(highlighted_lines.iter().map(|(line, highlights)| {
5909 Label::new(
5910 line.clone(),
5911 style.message.clone().with_font_size(font_size),
5912 )
5913 .with_highlights(highlights.clone())
5914 .contained()
5915 .with_margin_left(cx.anchor_x)
5916 .boxed()
5917 }))
5918 .aligned()
5919 .left()
5920 .boxed()
5921 })
5922}
5923
5924pub fn highlight_diagnostic_message(message: &str) -> (String, Vec<usize>) {
5925 let mut message_without_backticks = String::new();
5926 let mut prev_offset = 0;
5927 let mut inside_block = false;
5928 let mut highlights = Vec::new();
5929 for (match_ix, (offset, _)) in message
5930 .match_indices('`')
5931 .chain([(message.len(), "")])
5932 .enumerate()
5933 {
5934 message_without_backticks.push_str(&message[prev_offset..offset]);
5935 if inside_block {
5936 highlights.extend(prev_offset - match_ix..offset - match_ix);
5937 }
5938
5939 inside_block = !inside_block;
5940 prev_offset = offset + 1;
5941 }
5942
5943 (message_without_backticks, highlights)
5944}
5945
5946pub fn diagnostic_style(
5947 severity: DiagnosticSeverity,
5948 valid: bool,
5949 theme: &theme::Editor,
5950) -> DiagnosticStyle {
5951 match (severity, valid) {
5952 (DiagnosticSeverity::ERROR, true) => theme.error_diagnostic.clone(),
5953 (DiagnosticSeverity::ERROR, false) => theme.invalid_error_diagnostic.clone(),
5954 (DiagnosticSeverity::WARNING, true) => theme.warning_diagnostic.clone(),
5955 (DiagnosticSeverity::WARNING, false) => theme.invalid_warning_diagnostic.clone(),
5956 (DiagnosticSeverity::INFORMATION, true) => theme.information_diagnostic.clone(),
5957 (DiagnosticSeverity::INFORMATION, false) => theme.invalid_information_diagnostic.clone(),
5958 (DiagnosticSeverity::HINT, true) => theme.hint_diagnostic.clone(),
5959 (DiagnosticSeverity::HINT, false) => theme.invalid_hint_diagnostic.clone(),
5960 _ => theme.invalid_hint_diagnostic.clone(),
5961 }
5962}
5963
5964pub fn combine_syntax_and_fuzzy_match_highlights(
5965 text: &str,
5966 default_style: HighlightStyle,
5967 syntax_ranges: impl Iterator<Item = (Range<usize>, HighlightStyle)>,
5968 match_indices: &[usize],
5969) -> Vec<(Range<usize>, HighlightStyle)> {
5970 let mut result = Vec::new();
5971 let mut match_indices = match_indices.iter().copied().peekable();
5972
5973 for (range, mut syntax_highlight) in syntax_ranges.chain([(usize::MAX..0, Default::default())])
5974 {
5975 syntax_highlight.font_properties.weight(Default::default());
5976
5977 // Add highlights for any fuzzy match characters before the next
5978 // syntax highlight range.
5979 while let Some(&match_index) = match_indices.peek() {
5980 if match_index >= range.start {
5981 break;
5982 }
5983 match_indices.next();
5984 let end_index = char_ix_after(match_index, text);
5985 let mut match_style = default_style;
5986 match_style.font_properties.weight(fonts::Weight::BOLD);
5987 result.push((match_index..end_index, match_style));
5988 }
5989
5990 if range.start == usize::MAX {
5991 break;
5992 }
5993
5994 // Add highlights for any fuzzy match characters within the
5995 // syntax highlight range.
5996 let mut offset = range.start;
5997 while let Some(&match_index) = match_indices.peek() {
5998 if match_index >= range.end {
5999 break;
6000 }
6001
6002 match_indices.next();
6003 if match_index > offset {
6004 result.push((offset..match_index, syntax_highlight));
6005 }
6006
6007 let mut end_index = char_ix_after(match_index, text);
6008 while let Some(&next_match_index) = match_indices.peek() {
6009 if next_match_index == end_index && next_match_index < range.end {
6010 end_index = char_ix_after(next_match_index, text);
6011 match_indices.next();
6012 } else {
6013 break;
6014 }
6015 }
6016
6017 let mut match_style = syntax_highlight;
6018 match_style.font_properties.weight(fonts::Weight::BOLD);
6019 result.push((match_index..end_index, match_style));
6020 offset = end_index;
6021 }
6022
6023 if offset < range.end {
6024 result.push((offset..range.end, syntax_highlight));
6025 }
6026 }
6027
6028 fn char_ix_after(ix: usize, text: &str) -> usize {
6029 ix + text[ix..].chars().next().unwrap().len_utf8()
6030 }
6031
6032 result
6033}
6034
6035pub fn styled_runs_for_code_label<'a>(
6036 label: &'a CodeLabel,
6037 default_color: Color,
6038 syntax_theme: &'a theme::SyntaxTheme,
6039) -> impl 'a + Iterator<Item = (Range<usize>, HighlightStyle)> {
6040 const MUTED_OPACITY: usize = 165;
6041
6042 let mut muted_default_style = HighlightStyle {
6043 color: default_color,
6044 ..Default::default()
6045 };
6046 muted_default_style.color.a = ((default_color.a as usize * MUTED_OPACITY) / 255) as u8;
6047
6048 let mut prev_end = label.filter_range.end;
6049 label
6050 .runs
6051 .iter()
6052 .enumerate()
6053 .flat_map(move |(ix, (range, highlight_id))| {
6054 let style = if let Some(style) = highlight_id.style(syntax_theme) {
6055 style
6056 } else {
6057 return Default::default();
6058 };
6059 let mut muted_style = style.clone();
6060 muted_style.color.a = ((style.color.a as usize * MUTED_OPACITY) / 255) as u8;
6061
6062 let mut runs = SmallVec::<[(Range<usize>, HighlightStyle); 3]>::new();
6063 if range.start >= label.filter_range.end {
6064 if range.start > prev_end {
6065 runs.push((prev_end..range.start, muted_default_style));
6066 }
6067 runs.push((range.clone(), muted_style));
6068 } else if range.end <= label.filter_range.end {
6069 runs.push((range.clone(), style));
6070 } else {
6071 runs.push((range.start..label.filter_range.end, style));
6072 runs.push((label.filter_range.end..range.end, muted_style));
6073 }
6074 prev_end = cmp::max(prev_end, range.end);
6075
6076 if ix + 1 == label.runs.len() && label.text.len() > prev_end {
6077 runs.push((prev_end..label.text.len(), muted_default_style));
6078 }
6079
6080 runs
6081 })
6082}
6083
6084#[cfg(test)]
6085mod tests {
6086 use super::*;
6087 use language::{LanguageConfig, LanguageServerConfig};
6088 use lsp::FakeLanguageServer;
6089 use project::FakeFs;
6090 use smol::stream::StreamExt;
6091 use std::{cell::RefCell, rc::Rc, time::Instant};
6092 use text::Point;
6093 use unindent::Unindent;
6094 use util::test::sample_text;
6095
6096 #[gpui::test]
6097 fn test_undo_redo_with_selection_restoration(cx: &mut MutableAppContext) {
6098 let mut now = Instant::now();
6099 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
6100 let group_interval = buffer.read(cx).transaction_group_interval();
6101 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6102 let settings = Settings::test(cx);
6103 let (_, editor) = cx.add_window(Default::default(), |cx| {
6104 build_editor(buffer.clone(), settings, cx)
6105 });
6106
6107 editor.update(cx, |editor, cx| {
6108 editor.start_transaction_at(now, cx);
6109 editor.select_ranges([2..4], None, cx);
6110 editor.insert("cd", cx);
6111 editor.end_transaction_at(now, cx);
6112 assert_eq!(editor.text(cx), "12cd56");
6113 assert_eq!(editor.selected_ranges(cx), vec![4..4]);
6114
6115 editor.start_transaction_at(now, cx);
6116 editor.select_ranges([4..5], None, cx);
6117 editor.insert("e", cx);
6118 editor.end_transaction_at(now, cx);
6119 assert_eq!(editor.text(cx), "12cde6");
6120 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
6121
6122 now += group_interval + Duration::from_millis(1);
6123 editor.select_ranges([2..2], None, cx);
6124
6125 // Simulate an edit in another editor
6126 buffer.update(cx, |buffer, cx| {
6127 buffer.start_transaction_at(now, cx);
6128 buffer.edit([0..1], "a", cx);
6129 buffer.edit([1..1], "b", cx);
6130 buffer.end_transaction_at(now, cx);
6131 });
6132
6133 assert_eq!(editor.text(cx), "ab2cde6");
6134 assert_eq!(editor.selected_ranges(cx), vec![3..3]);
6135
6136 // Last transaction happened past the group interval in a different editor.
6137 // Undo it individually and don't restore selections.
6138 editor.undo(&Undo, cx);
6139 assert_eq!(editor.text(cx), "12cde6");
6140 assert_eq!(editor.selected_ranges(cx), vec![2..2]);
6141
6142 // First two transactions happened within the group interval in this editor.
6143 // Undo them together and restore selections.
6144 editor.undo(&Undo, cx);
6145 editor.undo(&Undo, cx); // Undo stack is empty here, so this is a no-op.
6146 assert_eq!(editor.text(cx), "123456");
6147 assert_eq!(editor.selected_ranges(cx), vec![0..0]);
6148
6149 // Redo the first two transactions together.
6150 editor.redo(&Redo, cx);
6151 assert_eq!(editor.text(cx), "12cde6");
6152 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
6153
6154 // Redo the last transaction on its own.
6155 editor.redo(&Redo, cx);
6156 assert_eq!(editor.text(cx), "ab2cde6");
6157 assert_eq!(editor.selected_ranges(cx), vec![6..6]);
6158
6159 // Test empty transactions.
6160 editor.start_transaction_at(now, cx);
6161 editor.end_transaction_at(now, cx);
6162 editor.undo(&Undo, cx);
6163 assert_eq!(editor.text(cx), "12cde6");
6164 });
6165 }
6166
6167 #[gpui::test]
6168 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
6169 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6170 let settings = Settings::test(cx);
6171 let (_, editor) =
6172 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6173
6174 editor.update(cx, |view, cx| {
6175 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
6176 });
6177
6178 assert_eq!(
6179 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6180 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
6181 );
6182
6183 editor.update(cx, |view, cx| {
6184 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6185 });
6186
6187 assert_eq!(
6188 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6189 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6190 );
6191
6192 editor.update(cx, |view, cx| {
6193 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6194 });
6195
6196 assert_eq!(
6197 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6198 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
6199 );
6200
6201 editor.update(cx, |view, cx| {
6202 view.end_selection(cx);
6203 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6204 });
6205
6206 assert_eq!(
6207 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6208 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
6209 );
6210
6211 editor.update(cx, |view, cx| {
6212 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
6213 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
6214 });
6215
6216 assert_eq!(
6217 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6218 [
6219 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
6220 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
6221 ]
6222 );
6223
6224 editor.update(cx, |view, cx| {
6225 view.end_selection(cx);
6226 });
6227
6228 assert_eq!(
6229 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6230 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
6231 );
6232 }
6233
6234 #[gpui::test]
6235 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
6236 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6237 let settings = Settings::test(cx);
6238 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6239
6240 view.update(cx, |view, cx| {
6241 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
6242 assert_eq!(
6243 view.selected_display_ranges(cx),
6244 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
6245 );
6246 });
6247
6248 view.update(cx, |view, cx| {
6249 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6250 assert_eq!(
6251 view.selected_display_ranges(cx),
6252 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6253 );
6254 });
6255
6256 view.update(cx, |view, cx| {
6257 view.cancel(&Cancel, cx);
6258 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6259 assert_eq!(
6260 view.selected_display_ranges(cx),
6261 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6262 );
6263 });
6264 }
6265
6266 #[gpui::test]
6267 fn test_navigation_history(cx: &mut gpui::MutableAppContext) {
6268 cx.add_window(Default::default(), |cx| {
6269 use workspace::ItemView;
6270 let nav_history = Rc::new(RefCell::new(workspace::NavHistory::default()));
6271 let settings = Settings::test(&cx);
6272 let buffer = MultiBuffer::build_simple(&sample_text(30, 5, 'a'), cx);
6273 let mut editor = build_editor(buffer.clone(), settings, cx);
6274 editor.nav_history = Some(ItemNavHistory::new(nav_history.clone(), &cx.handle()));
6275
6276 // Move the cursor a small distance.
6277 // Nothing is added to the navigation history.
6278 editor.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
6279 editor.select_display_ranges(&[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)], cx);
6280 assert!(nav_history.borrow_mut().pop_backward().is_none());
6281
6282 // Move the cursor a large distance.
6283 // The history can jump back to the previous position.
6284 editor.select_display_ranges(&[DisplayPoint::new(13, 0)..DisplayPoint::new(13, 3)], cx);
6285 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
6286 editor.navigate(nav_entry.data.unwrap(), cx);
6287 assert_eq!(nav_entry.item_view.id(), cx.view_id());
6288 assert_eq!(
6289 editor.selected_display_ranges(cx),
6290 &[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)]
6291 );
6292
6293 // Move the cursor a small distance via the mouse.
6294 // Nothing is added to the navigation history.
6295 editor.begin_selection(DisplayPoint::new(5, 0), false, 1, cx);
6296 editor.end_selection(cx);
6297 assert_eq!(
6298 editor.selected_display_ranges(cx),
6299 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
6300 );
6301 assert!(nav_history.borrow_mut().pop_backward().is_none());
6302
6303 // Move the cursor a large distance via the mouse.
6304 // The history can jump back to the previous position.
6305 editor.begin_selection(DisplayPoint::new(15, 0), false, 1, cx);
6306 editor.end_selection(cx);
6307 assert_eq!(
6308 editor.selected_display_ranges(cx),
6309 &[DisplayPoint::new(15, 0)..DisplayPoint::new(15, 0)]
6310 );
6311 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
6312 editor.navigate(nav_entry.data.unwrap(), cx);
6313 assert_eq!(nav_entry.item_view.id(), cx.view_id());
6314 assert_eq!(
6315 editor.selected_display_ranges(cx),
6316 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
6317 );
6318
6319 editor
6320 });
6321 }
6322
6323 #[gpui::test]
6324 fn test_cancel(cx: &mut gpui::MutableAppContext) {
6325 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6326 let settings = Settings::test(cx);
6327 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6328
6329 view.update(cx, |view, cx| {
6330 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
6331 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6332 view.end_selection(cx);
6333
6334 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
6335 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
6336 view.end_selection(cx);
6337 assert_eq!(
6338 view.selected_display_ranges(cx),
6339 [
6340 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
6341 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
6342 ]
6343 );
6344 });
6345
6346 view.update(cx, |view, cx| {
6347 view.cancel(&Cancel, cx);
6348 assert_eq!(
6349 view.selected_display_ranges(cx),
6350 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
6351 );
6352 });
6353
6354 view.update(cx, |view, cx| {
6355 view.cancel(&Cancel, cx);
6356 assert_eq!(
6357 view.selected_display_ranges(cx),
6358 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
6359 );
6360 });
6361 }
6362
6363 #[gpui::test]
6364 fn test_fold(cx: &mut gpui::MutableAppContext) {
6365 let buffer = MultiBuffer::build_simple(
6366 &"
6367 impl Foo {
6368 // Hello!
6369
6370 fn a() {
6371 1
6372 }
6373
6374 fn b() {
6375 2
6376 }
6377
6378 fn c() {
6379 3
6380 }
6381 }
6382 "
6383 .unindent(),
6384 cx,
6385 );
6386 let settings = Settings::test(&cx);
6387 let (_, view) = cx.add_window(Default::default(), |cx| {
6388 build_editor(buffer.clone(), settings, cx)
6389 });
6390
6391 view.update(cx, |view, cx| {
6392 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx);
6393 view.fold(&Fold, cx);
6394 assert_eq!(
6395 view.display_text(cx),
6396 "
6397 impl Foo {
6398 // Hello!
6399
6400 fn a() {
6401 1
6402 }
6403
6404 fn b() {…
6405 }
6406
6407 fn c() {…
6408 }
6409 }
6410 "
6411 .unindent(),
6412 );
6413
6414 view.fold(&Fold, cx);
6415 assert_eq!(
6416 view.display_text(cx),
6417 "
6418 impl Foo {…
6419 }
6420 "
6421 .unindent(),
6422 );
6423
6424 view.unfold(&Unfold, cx);
6425 assert_eq!(
6426 view.display_text(cx),
6427 "
6428 impl Foo {
6429 // Hello!
6430
6431 fn a() {
6432 1
6433 }
6434
6435 fn b() {…
6436 }
6437
6438 fn c() {…
6439 }
6440 }
6441 "
6442 .unindent(),
6443 );
6444
6445 view.unfold(&Unfold, cx);
6446 assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text());
6447 });
6448 }
6449
6450 #[gpui::test]
6451 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
6452 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
6453 let settings = Settings::test(&cx);
6454 let (_, view) = cx.add_window(Default::default(), |cx| {
6455 build_editor(buffer.clone(), settings, cx)
6456 });
6457
6458 buffer.update(cx, |buffer, cx| {
6459 buffer.edit(
6460 vec![
6461 Point::new(1, 0)..Point::new(1, 0),
6462 Point::new(1, 1)..Point::new(1, 1),
6463 ],
6464 "\t",
6465 cx,
6466 );
6467 });
6468
6469 view.update(cx, |view, cx| {
6470 assert_eq!(
6471 view.selected_display_ranges(cx),
6472 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6473 );
6474
6475 view.move_down(&MoveDown, cx);
6476 assert_eq!(
6477 view.selected_display_ranges(cx),
6478 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6479 );
6480
6481 view.move_right(&MoveRight, cx);
6482 assert_eq!(
6483 view.selected_display_ranges(cx),
6484 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
6485 );
6486
6487 view.move_left(&MoveLeft, cx);
6488 assert_eq!(
6489 view.selected_display_ranges(cx),
6490 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6491 );
6492
6493 view.move_up(&MoveUp, cx);
6494 assert_eq!(
6495 view.selected_display_ranges(cx),
6496 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6497 );
6498
6499 view.move_to_end(&MoveToEnd, cx);
6500 assert_eq!(
6501 view.selected_display_ranges(cx),
6502 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
6503 );
6504
6505 view.move_to_beginning(&MoveToBeginning, cx);
6506 assert_eq!(
6507 view.selected_display_ranges(cx),
6508 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6509 );
6510
6511 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx);
6512 view.select_to_beginning(&SelectToBeginning, cx);
6513 assert_eq!(
6514 view.selected_display_ranges(cx),
6515 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
6516 );
6517
6518 view.select_to_end(&SelectToEnd, cx);
6519 assert_eq!(
6520 view.selected_display_ranges(cx),
6521 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
6522 );
6523 });
6524 }
6525
6526 #[gpui::test]
6527 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
6528 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
6529 let settings = Settings::test(&cx);
6530 let (_, view) = cx.add_window(Default::default(), |cx| {
6531 build_editor(buffer.clone(), settings, cx)
6532 });
6533
6534 assert_eq!('ⓐ'.len_utf8(), 3);
6535 assert_eq!('α'.len_utf8(), 2);
6536
6537 view.update(cx, |view, cx| {
6538 view.fold_ranges(
6539 vec![
6540 Point::new(0, 6)..Point::new(0, 12),
6541 Point::new(1, 2)..Point::new(1, 4),
6542 Point::new(2, 4)..Point::new(2, 8),
6543 ],
6544 cx,
6545 );
6546 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
6547
6548 view.move_right(&MoveRight, cx);
6549 assert_eq!(
6550 view.selected_display_ranges(cx),
6551 &[empty_range(0, "ⓐ".len())]
6552 );
6553 view.move_right(&MoveRight, cx);
6554 assert_eq!(
6555 view.selected_display_ranges(cx),
6556 &[empty_range(0, "ⓐⓑ".len())]
6557 );
6558 view.move_right(&MoveRight, cx);
6559 assert_eq!(
6560 view.selected_display_ranges(cx),
6561 &[empty_range(0, "ⓐⓑ…".len())]
6562 );
6563
6564 view.move_down(&MoveDown, cx);
6565 assert_eq!(
6566 view.selected_display_ranges(cx),
6567 &[empty_range(1, "ab…".len())]
6568 );
6569 view.move_left(&MoveLeft, cx);
6570 assert_eq!(
6571 view.selected_display_ranges(cx),
6572 &[empty_range(1, "ab".len())]
6573 );
6574 view.move_left(&MoveLeft, cx);
6575 assert_eq!(
6576 view.selected_display_ranges(cx),
6577 &[empty_range(1, "a".len())]
6578 );
6579
6580 view.move_down(&MoveDown, cx);
6581 assert_eq!(
6582 view.selected_display_ranges(cx),
6583 &[empty_range(2, "α".len())]
6584 );
6585 view.move_right(&MoveRight, cx);
6586 assert_eq!(
6587 view.selected_display_ranges(cx),
6588 &[empty_range(2, "αβ".len())]
6589 );
6590 view.move_right(&MoveRight, cx);
6591 assert_eq!(
6592 view.selected_display_ranges(cx),
6593 &[empty_range(2, "αβ…".len())]
6594 );
6595 view.move_right(&MoveRight, cx);
6596 assert_eq!(
6597 view.selected_display_ranges(cx),
6598 &[empty_range(2, "αβ…ε".len())]
6599 );
6600
6601 view.move_up(&MoveUp, cx);
6602 assert_eq!(
6603 view.selected_display_ranges(cx),
6604 &[empty_range(1, "ab…e".len())]
6605 );
6606 view.move_up(&MoveUp, cx);
6607 assert_eq!(
6608 view.selected_display_ranges(cx),
6609 &[empty_range(0, "ⓐⓑ…ⓔ".len())]
6610 );
6611 view.move_left(&MoveLeft, cx);
6612 assert_eq!(
6613 view.selected_display_ranges(cx),
6614 &[empty_range(0, "ⓐⓑ…".len())]
6615 );
6616 view.move_left(&MoveLeft, cx);
6617 assert_eq!(
6618 view.selected_display_ranges(cx),
6619 &[empty_range(0, "ⓐⓑ".len())]
6620 );
6621 view.move_left(&MoveLeft, cx);
6622 assert_eq!(
6623 view.selected_display_ranges(cx),
6624 &[empty_range(0, "ⓐ".len())]
6625 );
6626 });
6627 }
6628
6629 #[gpui::test]
6630 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
6631 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
6632 let settings = Settings::test(&cx);
6633 let (_, view) = cx.add_window(Default::default(), |cx| {
6634 build_editor(buffer.clone(), settings, cx)
6635 });
6636 view.update(cx, |view, cx| {
6637 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx);
6638 view.move_down(&MoveDown, cx);
6639 assert_eq!(
6640 view.selected_display_ranges(cx),
6641 &[empty_range(1, "abcd".len())]
6642 );
6643
6644 view.move_down(&MoveDown, cx);
6645 assert_eq!(
6646 view.selected_display_ranges(cx),
6647 &[empty_range(2, "αβγ".len())]
6648 );
6649
6650 view.move_down(&MoveDown, cx);
6651 assert_eq!(
6652 view.selected_display_ranges(cx),
6653 &[empty_range(3, "abcd".len())]
6654 );
6655
6656 view.move_down(&MoveDown, cx);
6657 assert_eq!(
6658 view.selected_display_ranges(cx),
6659 &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
6660 );
6661
6662 view.move_up(&MoveUp, cx);
6663 assert_eq!(
6664 view.selected_display_ranges(cx),
6665 &[empty_range(3, "abcd".len())]
6666 );
6667
6668 view.move_up(&MoveUp, cx);
6669 assert_eq!(
6670 view.selected_display_ranges(cx),
6671 &[empty_range(2, "αβγ".len())]
6672 );
6673 });
6674 }
6675
6676 #[gpui::test]
6677 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
6678 let buffer = MultiBuffer::build_simple("abc\n def", cx);
6679 let settings = Settings::test(&cx);
6680 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6681 view.update(cx, |view, cx| {
6682 view.select_display_ranges(
6683 &[
6684 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6685 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
6686 ],
6687 cx,
6688 );
6689 });
6690
6691 view.update(cx, |view, cx| {
6692 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6693 assert_eq!(
6694 view.selected_display_ranges(cx),
6695 &[
6696 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6697 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6698 ]
6699 );
6700 });
6701
6702 view.update(cx, |view, cx| {
6703 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6704 assert_eq!(
6705 view.selected_display_ranges(cx),
6706 &[
6707 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6708 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6709 ]
6710 );
6711 });
6712
6713 view.update(cx, |view, cx| {
6714 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6715 assert_eq!(
6716 view.selected_display_ranges(cx),
6717 &[
6718 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6719 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6720 ]
6721 );
6722 });
6723
6724 view.update(cx, |view, cx| {
6725 view.move_to_end_of_line(&MoveToEndOfLine, cx);
6726 assert_eq!(
6727 view.selected_display_ranges(cx),
6728 &[
6729 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6730 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6731 ]
6732 );
6733 });
6734
6735 // Moving to the end of line again is a no-op.
6736 view.update(cx, |view, cx| {
6737 view.move_to_end_of_line(&MoveToEndOfLine, cx);
6738 assert_eq!(
6739 view.selected_display_ranges(cx),
6740 &[
6741 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6742 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6743 ]
6744 );
6745 });
6746
6747 view.update(cx, |view, cx| {
6748 view.move_left(&MoveLeft, cx);
6749 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6750 assert_eq!(
6751 view.selected_display_ranges(cx),
6752 &[
6753 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6754 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
6755 ]
6756 );
6757 });
6758
6759 view.update(cx, |view, cx| {
6760 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6761 assert_eq!(
6762 view.selected_display_ranges(cx),
6763 &[
6764 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6765 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
6766 ]
6767 );
6768 });
6769
6770 view.update(cx, |view, cx| {
6771 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6772 assert_eq!(
6773 view.selected_display_ranges(cx),
6774 &[
6775 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6776 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
6777 ]
6778 );
6779 });
6780
6781 view.update(cx, |view, cx| {
6782 view.select_to_end_of_line(&SelectToEndOfLine(true), cx);
6783 assert_eq!(
6784 view.selected_display_ranges(cx),
6785 &[
6786 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
6787 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
6788 ]
6789 );
6790 });
6791
6792 view.update(cx, |view, cx| {
6793 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
6794 assert_eq!(view.display_text(cx), "ab\n de");
6795 assert_eq!(
6796 view.selected_display_ranges(cx),
6797 &[
6798 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6799 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
6800 ]
6801 );
6802 });
6803
6804 view.update(cx, |view, cx| {
6805 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
6806 assert_eq!(view.display_text(cx), "\n");
6807 assert_eq!(
6808 view.selected_display_ranges(cx),
6809 &[
6810 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6811 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6812 ]
6813 );
6814 });
6815 }
6816
6817 #[gpui::test]
6818 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
6819 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
6820 let settings = Settings::test(&cx);
6821 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6822 view.update(cx, |view, cx| {
6823 view.select_display_ranges(
6824 &[
6825 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
6826 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
6827 ],
6828 cx,
6829 );
6830 });
6831
6832 view.update(cx, |view, cx| {
6833 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6834 assert_eq!(
6835 view.selected_display_ranges(cx),
6836 &[
6837 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
6838 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
6839 ]
6840 );
6841 });
6842
6843 view.update(cx, |view, cx| {
6844 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6845 assert_eq!(
6846 view.selected_display_ranges(cx),
6847 &[
6848 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
6849 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2),
6850 ]
6851 );
6852 });
6853
6854 view.update(cx, |view, cx| {
6855 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6856 assert_eq!(
6857 view.selected_display_ranges(cx),
6858 &[
6859 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
6860 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
6861 ]
6862 );
6863 });
6864
6865 view.update(cx, |view, cx| {
6866 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6867 assert_eq!(
6868 view.selected_display_ranges(cx),
6869 &[
6870 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6871 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6872 ]
6873 );
6874 });
6875
6876 view.update(cx, |view, cx| {
6877 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6878 assert_eq!(
6879 view.selected_display_ranges(cx),
6880 &[
6881 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6882 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 23),
6883 ]
6884 );
6885 });
6886
6887 view.update(cx, |view, cx| {
6888 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6889 assert_eq!(
6890 view.selected_display_ranges(cx),
6891 &[
6892 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6893 DisplayPoint::new(0, 24)..DisplayPoint::new(0, 24),
6894 ]
6895 );
6896 });
6897
6898 view.update(cx, |view, cx| {
6899 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6900 assert_eq!(
6901 view.selected_display_ranges(cx),
6902 &[
6903 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
6904 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6905 ]
6906 );
6907 });
6908
6909 view.update(cx, |view, cx| {
6910 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6911 assert_eq!(
6912 view.selected_display_ranges(cx),
6913 &[
6914 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
6915 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
6916 ]
6917 );
6918 });
6919
6920 view.update(cx, |view, cx| {
6921 view.move_right(&MoveRight, cx);
6922 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
6923 assert_eq!(
6924 view.selected_display_ranges(cx),
6925 &[
6926 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
6927 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
6928 ]
6929 );
6930 });
6931
6932 view.update(cx, |view, cx| {
6933 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
6934 assert_eq!(
6935 view.selected_display_ranges(cx),
6936 &[
6937 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 7),
6938 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 2),
6939 ]
6940 );
6941 });
6942
6943 view.update(cx, |view, cx| {
6944 view.select_to_next_word_boundary(&SelectToNextWordBoundary, cx);
6945 assert_eq!(
6946 view.selected_display_ranges(cx),
6947 &[
6948 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
6949 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
6950 ]
6951 );
6952 });
6953 }
6954
6955 #[gpui::test]
6956 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
6957 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
6958 let settings = Settings::test(&cx);
6959 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6960
6961 view.update(cx, |view, cx| {
6962 view.set_wrap_width(Some(140.), cx);
6963 assert_eq!(
6964 view.display_text(cx),
6965 "use one::{\n two::three::\n four::five\n};"
6966 );
6967
6968 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx);
6969
6970 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6971 assert_eq!(
6972 view.selected_display_ranges(cx),
6973 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
6974 );
6975
6976 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6977 assert_eq!(
6978 view.selected_display_ranges(cx),
6979 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
6980 );
6981
6982 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6983 assert_eq!(
6984 view.selected_display_ranges(cx),
6985 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
6986 );
6987
6988 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6989 assert_eq!(
6990 view.selected_display_ranges(cx),
6991 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
6992 );
6993
6994 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6995 assert_eq!(
6996 view.selected_display_ranges(cx),
6997 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
6998 );
6999
7000 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
7001 assert_eq!(
7002 view.selected_display_ranges(cx),
7003 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
7004 );
7005 });
7006 }
7007
7008 #[gpui::test]
7009 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
7010 let buffer = MultiBuffer::build_simple("one two three four", cx);
7011 let settings = Settings::test(&cx);
7012 let (_, view) = cx.add_window(Default::default(), |cx| {
7013 build_editor(buffer.clone(), settings, cx)
7014 });
7015
7016 view.update(cx, |view, cx| {
7017 view.select_display_ranges(
7018 &[
7019 // an empty selection - the preceding word fragment is deleted
7020 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7021 // characters selected - they are deleted
7022 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
7023 ],
7024 cx,
7025 );
7026 view.delete_to_previous_word_boundary(&DeleteToPreviousWordBoundary, cx);
7027 });
7028
7029 assert_eq!(buffer.read(cx).read(cx).text(), "e two te four");
7030
7031 view.update(cx, |view, cx| {
7032 view.select_display_ranges(
7033 &[
7034 // an empty selection - the following word fragment is deleted
7035 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7036 // characters selected - they are deleted
7037 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
7038 ],
7039 cx,
7040 );
7041 view.delete_to_next_word_boundary(&DeleteToNextWordBoundary, cx);
7042 });
7043
7044 assert_eq!(buffer.read(cx).read(cx).text(), "e t te our");
7045 }
7046
7047 #[gpui::test]
7048 fn test_newline(cx: &mut gpui::MutableAppContext) {
7049 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
7050 let settings = Settings::test(&cx);
7051 let (_, view) = cx.add_window(Default::default(), |cx| {
7052 build_editor(buffer.clone(), settings, cx)
7053 });
7054
7055 view.update(cx, |view, cx| {
7056 view.select_display_ranges(
7057 &[
7058 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7059 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7060 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
7061 ],
7062 cx,
7063 );
7064
7065 view.newline(&Newline, cx);
7066 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
7067 });
7068 }
7069
7070 #[gpui::test]
7071 fn test_newline_with_old_selections(cx: &mut gpui::MutableAppContext) {
7072 let buffer = MultiBuffer::build_simple(
7073 "
7074 a
7075 b(
7076 X
7077 )
7078 c(
7079 X
7080 )
7081 "
7082 .unindent()
7083 .as_str(),
7084 cx,
7085 );
7086
7087 let settings = Settings::test(&cx);
7088 let (_, editor) = cx.add_window(Default::default(), |cx| {
7089 let mut editor = build_editor(buffer.clone(), settings, cx);
7090 editor.select_ranges(
7091 [
7092 Point::new(2, 4)..Point::new(2, 5),
7093 Point::new(5, 4)..Point::new(5, 5),
7094 ],
7095 None,
7096 cx,
7097 );
7098 editor
7099 });
7100
7101 // Edit the buffer directly, deleting ranges surrounding the editor's selections
7102 buffer.update(cx, |buffer, cx| {
7103 buffer.edit(
7104 [
7105 Point::new(1, 2)..Point::new(3, 0),
7106 Point::new(4, 2)..Point::new(6, 0),
7107 ],
7108 "",
7109 cx,
7110 );
7111 assert_eq!(
7112 buffer.read(cx).text(),
7113 "
7114 a
7115 b()
7116 c()
7117 "
7118 .unindent()
7119 );
7120 });
7121
7122 editor.update(cx, |editor, cx| {
7123 assert_eq!(
7124 editor.selected_ranges(cx),
7125 &[
7126 Point::new(1, 2)..Point::new(1, 2),
7127 Point::new(2, 2)..Point::new(2, 2),
7128 ],
7129 );
7130
7131 editor.newline(&Newline, cx);
7132 assert_eq!(
7133 editor.text(cx),
7134 "
7135 a
7136 b(
7137 )
7138 c(
7139 )
7140 "
7141 .unindent()
7142 );
7143
7144 // The selections are moved after the inserted newlines
7145 assert_eq!(
7146 editor.selected_ranges(cx),
7147 &[
7148 Point::new(2, 0)..Point::new(2, 0),
7149 Point::new(4, 0)..Point::new(4, 0),
7150 ],
7151 );
7152 });
7153 }
7154
7155 #[gpui::test]
7156 fn test_insert_with_old_selections(cx: &mut gpui::MutableAppContext) {
7157 let buffer = MultiBuffer::build_simple("a( X ), b( Y ), c( Z )", cx);
7158
7159 let settings = Settings::test(&cx);
7160 let (_, editor) = cx.add_window(Default::default(), |cx| {
7161 let mut editor = build_editor(buffer.clone(), settings, 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 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
7186 let settings = Settings::test(&cx);
7187 let (_, view) = cx.add_window(Default::default(), |cx| {
7188 build_editor(buffer.clone(), settings, cx)
7189 });
7190
7191 view.update(cx, |view, cx| {
7192 // two selections on the same line
7193 view.select_display_ranges(
7194 &[
7195 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
7196 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
7197 ],
7198 cx,
7199 );
7200
7201 // indent from mid-tabstop to full tabstop
7202 view.tab(&Tab, cx);
7203 assert_eq!(view.text(cx), " one two\nthree\n four");
7204 assert_eq!(
7205 view.selected_display_ranges(cx),
7206 &[
7207 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
7208 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
7209 ]
7210 );
7211
7212 // outdent from 1 tabstop to 0 tabstops
7213 view.outdent(&Outdent, cx);
7214 assert_eq!(view.text(cx), "one two\nthree\n four");
7215 assert_eq!(
7216 view.selected_display_ranges(cx),
7217 &[
7218 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
7219 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
7220 ]
7221 );
7222
7223 // select across line ending
7224 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx);
7225
7226 // indent and outdent affect only the preceding line
7227 view.tab(&Tab, cx);
7228 assert_eq!(view.text(cx), "one two\n three\n four");
7229 assert_eq!(
7230 view.selected_display_ranges(cx),
7231 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
7232 );
7233 view.outdent(&Outdent, cx);
7234 assert_eq!(view.text(cx), "one two\nthree\n four");
7235 assert_eq!(
7236 view.selected_display_ranges(cx),
7237 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
7238 );
7239
7240 // Ensure that indenting/outdenting works when the cursor is at column 0.
7241 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
7242 view.tab(&Tab, cx);
7243 assert_eq!(view.text(cx), "one two\n three\n four");
7244 assert_eq!(
7245 view.selected_display_ranges(cx),
7246 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
7247 );
7248
7249 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
7250 view.outdent(&Outdent, cx);
7251 assert_eq!(view.text(cx), "one two\nthree\n four");
7252 assert_eq!(
7253 view.selected_display_ranges(cx),
7254 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
7255 );
7256 });
7257 }
7258
7259 #[gpui::test]
7260 fn test_backspace(cx: &mut gpui::MutableAppContext) {
7261 let settings = Settings::test(&cx);
7262 let (_, view) = cx.add_window(Default::default(), |cx| {
7263 build_editor(MultiBuffer::build_simple("", cx), settings, cx)
7264 });
7265
7266 view.update(cx, |view, cx| {
7267 view.set_text("one two three\nfour five six\nseven eight nine\nten\n", cx);
7268 view.select_display_ranges(
7269 &[
7270 // an empty selection - the preceding character is deleted
7271 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7272 // one character selected - it is deleted
7273 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7274 // a line suffix selected - it is deleted
7275 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
7276 ],
7277 cx,
7278 );
7279 view.backspace(&Backspace, cx);
7280 assert_eq!(view.text(cx), "oe two three\nfou five six\nseven ten\n");
7281
7282 view.set_text(" one\n two\n three\n four", cx);
7283 view.select_display_ranges(
7284 &[
7285 // cursors at the the end of leading indent - last indent is deleted
7286 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
7287 DisplayPoint::new(1, 8)..DisplayPoint::new(1, 8),
7288 // cursors inside leading indent - overlapping indent deletions are coalesced
7289 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
7290 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7291 DisplayPoint::new(2, 6)..DisplayPoint::new(2, 6),
7292 // cursor at the beginning of a line - preceding newline is deleted
7293 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7294 // selection inside leading indent - only the selected character is deleted
7295 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 3),
7296 ],
7297 cx,
7298 );
7299 view.backspace(&Backspace, cx);
7300 assert_eq!(view.text(cx), "one\n two\n three four");
7301 });
7302 }
7303
7304 #[gpui::test]
7305 fn test_delete(cx: &mut gpui::MutableAppContext) {
7306 let buffer =
7307 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
7308 let settings = Settings::test(&cx);
7309 let (_, view) = cx.add_window(Default::default(), |cx| {
7310 build_editor(buffer.clone(), settings, cx)
7311 });
7312
7313 view.update(cx, |view, cx| {
7314 view.select_display_ranges(
7315 &[
7316 // an empty selection - the following character is deleted
7317 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7318 // one character selected - it is deleted
7319 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7320 // a line suffix selected - it is deleted
7321 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
7322 ],
7323 cx,
7324 );
7325 view.delete(&Delete, cx);
7326 });
7327
7328 assert_eq!(
7329 buffer.read(cx).read(cx).text(),
7330 "on two three\nfou five six\nseven ten\n"
7331 );
7332 }
7333
7334 #[gpui::test]
7335 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
7336 let settings = Settings::test(&cx);
7337 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7338 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7339 view.update(cx, |view, cx| {
7340 view.select_display_ranges(
7341 &[
7342 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7343 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
7344 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7345 ],
7346 cx,
7347 );
7348 view.delete_line(&DeleteLine, cx);
7349 assert_eq!(view.display_text(cx), "ghi");
7350 assert_eq!(
7351 view.selected_display_ranges(cx),
7352 vec![
7353 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7354 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
7355 ]
7356 );
7357 });
7358
7359 let settings = Settings::test(&cx);
7360 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7361 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7362 view.update(cx, |view, cx| {
7363 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx);
7364 view.delete_line(&DeleteLine, cx);
7365 assert_eq!(view.display_text(cx), "ghi\n");
7366 assert_eq!(
7367 view.selected_display_ranges(cx),
7368 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
7369 );
7370 });
7371 }
7372
7373 #[gpui::test]
7374 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
7375 let settings = Settings::test(&cx);
7376 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7377 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7378 view.update(cx, |view, cx| {
7379 view.select_display_ranges(
7380 &[
7381 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7382 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7383 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7384 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7385 ],
7386 cx,
7387 );
7388 view.duplicate_line(&DuplicateLine, cx);
7389 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
7390 assert_eq!(
7391 view.selected_display_ranges(cx),
7392 vec![
7393 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
7394 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7395 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7396 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
7397 ]
7398 );
7399 });
7400
7401 let settings = Settings::test(&cx);
7402 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7403 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7404 view.update(cx, |view, cx| {
7405 view.select_display_ranges(
7406 &[
7407 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
7408 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
7409 ],
7410 cx,
7411 );
7412 view.duplicate_line(&DuplicateLine, cx);
7413 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
7414 assert_eq!(
7415 view.selected_display_ranges(cx),
7416 vec![
7417 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
7418 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
7419 ]
7420 );
7421 });
7422 }
7423
7424 #[gpui::test]
7425 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
7426 let settings = Settings::test(&cx);
7427 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
7428 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7429 view.update(cx, |view, cx| {
7430 view.fold_ranges(
7431 vec![
7432 Point::new(0, 2)..Point::new(1, 2),
7433 Point::new(2, 3)..Point::new(4, 1),
7434 Point::new(7, 0)..Point::new(8, 4),
7435 ],
7436 cx,
7437 );
7438 view.select_display_ranges(
7439 &[
7440 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7441 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7442 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7443 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
7444 ],
7445 cx,
7446 );
7447 assert_eq!(
7448 view.display_text(cx),
7449 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
7450 );
7451
7452 view.move_line_up(&MoveLineUp, cx);
7453 assert_eq!(
7454 view.display_text(cx),
7455 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
7456 );
7457 assert_eq!(
7458 view.selected_display_ranges(cx),
7459 vec![
7460 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7461 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7462 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
7463 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
7464 ]
7465 );
7466 });
7467
7468 view.update(cx, |view, cx| {
7469 view.move_line_down(&MoveLineDown, cx);
7470 assert_eq!(
7471 view.display_text(cx),
7472 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
7473 );
7474 assert_eq!(
7475 view.selected_display_ranges(cx),
7476 vec![
7477 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7478 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7479 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7480 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
7481 ]
7482 );
7483 });
7484
7485 view.update(cx, |view, cx| {
7486 view.move_line_down(&MoveLineDown, cx);
7487 assert_eq!(
7488 view.display_text(cx),
7489 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
7490 );
7491 assert_eq!(
7492 view.selected_display_ranges(cx),
7493 vec![
7494 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7495 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7496 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7497 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
7498 ]
7499 );
7500 });
7501
7502 view.update(cx, |view, cx| {
7503 view.move_line_up(&MoveLineUp, cx);
7504 assert_eq!(
7505 view.display_text(cx),
7506 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
7507 );
7508 assert_eq!(
7509 view.selected_display_ranges(cx),
7510 vec![
7511 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7512 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7513 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
7514 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
7515 ]
7516 );
7517 });
7518 }
7519
7520 #[gpui::test]
7521 fn test_move_line_up_down_with_blocks(cx: &mut gpui::MutableAppContext) {
7522 let settings = Settings::test(&cx);
7523 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
7524 let snapshot = buffer.read(cx).snapshot(cx);
7525 let (_, editor) =
7526 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7527 editor.update(cx, |editor, cx| {
7528 editor.insert_blocks(
7529 [BlockProperties {
7530 position: snapshot.anchor_after(Point::new(2, 0)),
7531 disposition: BlockDisposition::Below,
7532 height: 1,
7533 render: Arc::new(|_| Empty::new().boxed()),
7534 }],
7535 cx,
7536 );
7537 editor.select_ranges([Point::new(2, 0)..Point::new(2, 0)], None, cx);
7538 editor.move_line_down(&MoveLineDown, cx);
7539 });
7540 }
7541
7542 #[gpui::test]
7543 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
7544 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
7545 let settings = Settings::test(&cx);
7546 let view = cx
7547 .add_window(Default::default(), |cx| {
7548 build_editor(buffer.clone(), settings, cx)
7549 })
7550 .1;
7551
7552 // Cut with three selections. Clipboard text is divided into three slices.
7553 view.update(cx, |view, cx| {
7554 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
7555 view.cut(&Cut, cx);
7556 assert_eq!(view.display_text(cx), "two four six ");
7557 });
7558
7559 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
7560 view.update(cx, |view, cx| {
7561 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
7562 view.paste(&Paste, cx);
7563 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
7564 assert_eq!(
7565 view.selected_display_ranges(cx),
7566 &[
7567 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
7568 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
7569 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
7570 ]
7571 );
7572 });
7573
7574 // Paste again but with only two cursors. Since the number of cursors doesn't
7575 // match the number of slices in the clipboard, the entire clipboard text
7576 // is pasted at each cursor.
7577 view.update(cx, |view, cx| {
7578 view.select_ranges(vec![0..0, 31..31], None, cx);
7579 view.handle_input(&Input("( ".into()), cx);
7580 view.paste(&Paste, cx);
7581 view.handle_input(&Input(") ".into()), cx);
7582 assert_eq!(
7583 view.display_text(cx),
7584 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7585 );
7586 });
7587
7588 view.update(cx, |view, cx| {
7589 view.select_ranges(vec![0..0], None, cx);
7590 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
7591 assert_eq!(
7592 view.display_text(cx),
7593 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7594 );
7595 });
7596
7597 // Cut with three selections, one of which is full-line.
7598 view.update(cx, |view, cx| {
7599 view.select_display_ranges(
7600 &[
7601 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
7602 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7603 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
7604 ],
7605 cx,
7606 );
7607 view.cut(&Cut, cx);
7608 assert_eq!(
7609 view.display_text(cx),
7610 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7611 );
7612 });
7613
7614 // Paste with three selections, noticing how the copied selection that was full-line
7615 // gets inserted before the second cursor.
7616 view.update(cx, |view, cx| {
7617 view.select_display_ranges(
7618 &[
7619 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7620 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7621 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
7622 ],
7623 cx,
7624 );
7625 view.paste(&Paste, cx);
7626 assert_eq!(
7627 view.display_text(cx),
7628 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
7629 );
7630 assert_eq!(
7631 view.selected_display_ranges(cx),
7632 &[
7633 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7634 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7635 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
7636 ]
7637 );
7638 });
7639
7640 // Copy with a single cursor only, which writes the whole line into the clipboard.
7641 view.update(cx, |view, cx| {
7642 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx);
7643 view.copy(&Copy, cx);
7644 });
7645
7646 // Paste with three selections, noticing how the copied full-line selection is inserted
7647 // before the empty selections but replaces the selection that is non-empty.
7648 view.update(cx, |view, cx| {
7649 view.select_display_ranges(
7650 &[
7651 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7652 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
7653 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7654 ],
7655 cx,
7656 );
7657 view.paste(&Paste, cx);
7658 assert_eq!(
7659 view.display_text(cx),
7660 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
7661 );
7662 assert_eq!(
7663 view.selected_display_ranges(cx),
7664 &[
7665 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7666 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7667 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
7668 ]
7669 );
7670 });
7671 }
7672
7673 #[gpui::test]
7674 fn test_select_all(cx: &mut gpui::MutableAppContext) {
7675 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
7676 let settings = Settings::test(&cx);
7677 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7678 view.update(cx, |view, cx| {
7679 view.select_all(&SelectAll, cx);
7680 assert_eq!(
7681 view.selected_display_ranges(cx),
7682 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
7683 );
7684 });
7685 }
7686
7687 #[gpui::test]
7688 fn test_select_line(cx: &mut gpui::MutableAppContext) {
7689 let settings = Settings::test(&cx);
7690 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
7691 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7692 view.update(cx, |view, cx| {
7693 view.select_display_ranges(
7694 &[
7695 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7696 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7697 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7698 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
7699 ],
7700 cx,
7701 );
7702 view.select_line(&SelectLine, cx);
7703 assert_eq!(
7704 view.selected_display_ranges(cx),
7705 vec![
7706 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
7707 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
7708 ]
7709 );
7710 });
7711
7712 view.update(cx, |view, cx| {
7713 view.select_line(&SelectLine, cx);
7714 assert_eq!(
7715 view.selected_display_ranges(cx),
7716 vec![
7717 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
7718 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
7719 ]
7720 );
7721 });
7722
7723 view.update(cx, |view, cx| {
7724 view.select_line(&SelectLine, cx);
7725 assert_eq!(
7726 view.selected_display_ranges(cx),
7727 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
7728 );
7729 });
7730 }
7731
7732 #[gpui::test]
7733 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
7734 let settings = Settings::test(&cx);
7735 let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
7736 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7737 view.update(cx, |view, cx| {
7738 view.fold_ranges(
7739 vec![
7740 Point::new(0, 2)..Point::new(1, 2),
7741 Point::new(2, 3)..Point::new(4, 1),
7742 Point::new(7, 0)..Point::new(8, 4),
7743 ],
7744 cx,
7745 );
7746 view.select_display_ranges(
7747 &[
7748 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7749 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7750 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7751 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
7752 ],
7753 cx,
7754 );
7755 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
7756 });
7757
7758 view.update(cx, |view, cx| {
7759 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
7760 assert_eq!(
7761 view.display_text(cx),
7762 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
7763 );
7764 assert_eq!(
7765 view.selected_display_ranges(cx),
7766 [
7767 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7768 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7769 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
7770 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
7771 ]
7772 );
7773 });
7774
7775 view.update(cx, |view, cx| {
7776 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx);
7777 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
7778 assert_eq!(
7779 view.display_text(cx),
7780 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
7781 );
7782 assert_eq!(
7783 view.selected_display_ranges(cx),
7784 [
7785 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
7786 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
7787 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7788 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
7789 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
7790 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
7791 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
7792 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
7793 ]
7794 );
7795 });
7796 }
7797
7798 #[gpui::test]
7799 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
7800 let settings = Settings::test(&cx);
7801 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
7802 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7803
7804 view.update(cx, |view, cx| {
7805 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx);
7806 });
7807 view.update(cx, |view, cx| {
7808 view.add_selection_above(&AddSelectionAbove, cx);
7809 assert_eq!(
7810 view.selected_display_ranges(cx),
7811 vec![
7812 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7813 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
7814 ]
7815 );
7816 });
7817
7818 view.update(cx, |view, cx| {
7819 view.add_selection_above(&AddSelectionAbove, cx);
7820 assert_eq!(
7821 view.selected_display_ranges(cx),
7822 vec![
7823 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7824 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
7825 ]
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![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
7834 );
7835 });
7836
7837 view.update(cx, |view, cx| {
7838 view.add_selection_below(&AddSelectionBelow, cx);
7839 assert_eq!(
7840 view.selected_display_ranges(cx),
7841 vec![
7842 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7843 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
7844 ]
7845 );
7846 });
7847
7848 view.update(cx, |view, cx| {
7849 view.add_selection_below(&AddSelectionBelow, cx);
7850 assert_eq!(
7851 view.selected_display_ranges(cx),
7852 vec![
7853 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7854 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
7855 ]
7856 );
7857 });
7858
7859 view.update(cx, |view, cx| {
7860 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx);
7861 });
7862 view.update(cx, |view, cx| {
7863 view.add_selection_below(&AddSelectionBelow, cx);
7864 assert_eq!(
7865 view.selected_display_ranges(cx),
7866 vec![
7867 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7868 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
7869 ]
7870 );
7871 });
7872
7873 view.update(cx, |view, cx| {
7874 view.add_selection_below(&AddSelectionBelow, cx);
7875 assert_eq!(
7876 view.selected_display_ranges(cx),
7877 vec![
7878 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7879 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
7880 ]
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.add_selection_above(&AddSelectionAbove, cx);
7894 assert_eq!(
7895 view.selected_display_ranges(cx),
7896 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
7897 );
7898 });
7899
7900 view.update(cx, |view, cx| {
7901 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx);
7902 view.add_selection_below(&AddSelectionBelow, cx);
7903 assert_eq!(
7904 view.selected_display_ranges(cx),
7905 vec![
7906 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7907 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7908 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7909 ]
7910 );
7911 });
7912
7913 view.update(cx, |view, cx| {
7914 view.add_selection_below(&AddSelectionBelow, cx);
7915 assert_eq!(
7916 view.selected_display_ranges(cx),
7917 vec![
7918 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7919 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7920 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7921 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
7922 ]
7923 );
7924 });
7925
7926 view.update(cx, |view, cx| {
7927 view.add_selection_above(&AddSelectionAbove, cx);
7928 assert_eq!(
7929 view.selected_display_ranges(cx),
7930 vec![
7931 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7932 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7933 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7934 ]
7935 );
7936 });
7937
7938 view.update(cx, |view, cx| {
7939 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx);
7940 });
7941 view.update(cx, |view, cx| {
7942 view.add_selection_above(&AddSelectionAbove, cx);
7943 assert_eq!(
7944 view.selected_display_ranges(cx),
7945 vec![
7946 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
7947 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
7948 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
7949 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
7950 ]
7951 );
7952 });
7953
7954 view.update(cx, |view, cx| {
7955 view.add_selection_below(&AddSelectionBelow, cx);
7956 assert_eq!(
7957 view.selected_display_ranges(cx),
7958 vec![
7959 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
7960 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
7961 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
7962 ]
7963 );
7964 });
7965 }
7966
7967 #[gpui::test]
7968 async fn test_select_larger_smaller_syntax_node(cx: &mut gpui::TestAppContext) {
7969 let settings = cx.read(Settings::test);
7970 let language = Arc::new(Language::new(
7971 LanguageConfig::default(),
7972 Some(tree_sitter_rust::language()),
7973 ));
7974
7975 let text = r#"
7976 use mod1::mod2::{mod3, mod4};
7977
7978 fn fn_1(param1: bool, param2: &str) {
7979 let var1 = "text";
7980 }
7981 "#
7982 .unindent();
7983
7984 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7985 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7986 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7987 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
7988 .await;
7989
7990 view.update(cx, |view, cx| {
7991 view.select_display_ranges(
7992 &[
7993 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7994 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7995 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7996 ],
7997 cx,
7998 );
7999 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8000 });
8001 assert_eq!(
8002 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8003 &[
8004 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
8005 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
8006 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
8007 ]
8008 );
8009
8010 view.update(cx, |view, cx| {
8011 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8012 });
8013 assert_eq!(
8014 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8015 &[
8016 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
8017 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
8018 ]
8019 );
8020
8021 view.update(cx, |view, cx| {
8022 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8023 });
8024 assert_eq!(
8025 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8026 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
8027 );
8028
8029 // Trying to expand the selected syntax node one more time has no effect.
8030 view.update(cx, |view, cx| {
8031 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8032 });
8033 assert_eq!(
8034 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8035 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
8036 );
8037
8038 view.update(cx, |view, cx| {
8039 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8040 });
8041 assert_eq!(
8042 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8043 &[
8044 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
8045 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
8046 ]
8047 );
8048
8049 view.update(cx, |view, cx| {
8050 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8051 });
8052 assert_eq!(
8053 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8054 &[
8055 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
8056 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
8057 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
8058 ]
8059 );
8060
8061 view.update(cx, |view, cx| {
8062 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8063 });
8064 assert_eq!(
8065 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8066 &[
8067 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
8068 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
8069 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
8070 ]
8071 );
8072
8073 // Trying to shrink the selected syntax node one more time has no effect.
8074 view.update(cx, |view, cx| {
8075 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8076 });
8077 assert_eq!(
8078 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8079 &[
8080 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
8081 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
8082 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
8083 ]
8084 );
8085
8086 // Ensure that we keep expanding the selection if the larger selection starts or ends within
8087 // a fold.
8088 view.update(cx, |view, cx| {
8089 view.fold_ranges(
8090 vec![
8091 Point::new(0, 21)..Point::new(0, 24),
8092 Point::new(3, 20)..Point::new(3, 22),
8093 ],
8094 cx,
8095 );
8096 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8097 });
8098 assert_eq!(
8099 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8100 &[
8101 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
8102 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
8103 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
8104 ]
8105 );
8106 }
8107
8108 #[gpui::test]
8109 async fn test_autoindent_selections(cx: &mut gpui::TestAppContext) {
8110 let settings = cx.read(Settings::test);
8111 let language = Arc::new(
8112 Language::new(
8113 LanguageConfig {
8114 brackets: vec![
8115 BracketPair {
8116 start: "{".to_string(),
8117 end: "}".to_string(),
8118 close: false,
8119 newline: true,
8120 },
8121 BracketPair {
8122 start: "(".to_string(),
8123 end: ")".to_string(),
8124 close: false,
8125 newline: true,
8126 },
8127 ],
8128 ..Default::default()
8129 },
8130 Some(tree_sitter_rust::language()),
8131 )
8132 .with_indents_query(
8133 r#"
8134 (_ "(" ")" @end) @indent
8135 (_ "{" "}" @end) @indent
8136 "#,
8137 )
8138 .unwrap(),
8139 );
8140
8141 let text = "fn a() {}";
8142
8143 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8144 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8145 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8146 editor
8147 .condition(&cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
8148 .await;
8149
8150 editor.update(cx, |editor, cx| {
8151 editor.select_ranges([5..5, 8..8, 9..9], None, cx);
8152 editor.newline(&Newline, cx);
8153 assert_eq!(editor.text(cx), "fn a(\n \n) {\n \n}\n");
8154 assert_eq!(
8155 editor.selected_ranges(cx),
8156 &[
8157 Point::new(1, 4)..Point::new(1, 4),
8158 Point::new(3, 4)..Point::new(3, 4),
8159 Point::new(5, 0)..Point::new(5, 0)
8160 ]
8161 );
8162 });
8163 }
8164
8165 #[gpui::test]
8166 async fn test_autoclose_pairs(cx: &mut gpui::TestAppContext) {
8167 let settings = cx.read(Settings::test);
8168 let language = Arc::new(Language::new(
8169 LanguageConfig {
8170 brackets: vec![
8171 BracketPair {
8172 start: "{".to_string(),
8173 end: "}".to_string(),
8174 close: true,
8175 newline: true,
8176 },
8177 BracketPair {
8178 start: "/*".to_string(),
8179 end: " */".to_string(),
8180 close: true,
8181 newline: true,
8182 },
8183 ],
8184 ..Default::default()
8185 },
8186 Some(tree_sitter_rust::language()),
8187 ));
8188
8189 let text = r#"
8190 a
8191
8192 /
8193
8194 "#
8195 .unindent();
8196
8197 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8198 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8199 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8200 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
8201 .await;
8202
8203 view.update(cx, |view, cx| {
8204 view.select_display_ranges(
8205 &[
8206 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
8207 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
8208 ],
8209 cx,
8210 );
8211 view.handle_input(&Input("{".to_string()), cx);
8212 view.handle_input(&Input("{".to_string()), cx);
8213 view.handle_input(&Input("{".to_string()), cx);
8214 assert_eq!(
8215 view.text(cx),
8216 "
8217 {{{}}}
8218 {{{}}}
8219 /
8220
8221 "
8222 .unindent()
8223 );
8224
8225 view.move_right(&MoveRight, cx);
8226 view.handle_input(&Input("}".to_string()), cx);
8227 view.handle_input(&Input("}".to_string()), cx);
8228 view.handle_input(&Input("}".to_string()), cx);
8229 assert_eq!(
8230 view.text(cx),
8231 "
8232 {{{}}}}
8233 {{{}}}}
8234 /
8235
8236 "
8237 .unindent()
8238 );
8239
8240 view.undo(&Undo, cx);
8241 view.handle_input(&Input("/".to_string()), cx);
8242 view.handle_input(&Input("*".to_string()), cx);
8243 assert_eq!(
8244 view.text(cx),
8245 "
8246 /* */
8247 /* */
8248 /
8249
8250 "
8251 .unindent()
8252 );
8253
8254 view.undo(&Undo, cx);
8255 view.select_display_ranges(
8256 &[
8257 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
8258 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
8259 ],
8260 cx,
8261 );
8262 view.handle_input(&Input("*".to_string()), cx);
8263 assert_eq!(
8264 view.text(cx),
8265 "
8266 a
8267
8268 /*
8269 *
8270 "
8271 .unindent()
8272 );
8273
8274 view.finalize_last_transaction(cx);
8275 view.select_display_ranges(&[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)], cx);
8276 view.handle_input(&Input("{".to_string()), cx);
8277 assert_eq!(
8278 view.text(cx),
8279 "
8280 {a
8281
8282 /*
8283 *
8284 "
8285 .unindent()
8286 );
8287
8288 view.undo(&Undo, cx);
8289 view.select_display_ranges(&[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1)], cx);
8290 view.handle_input(&Input("{".to_string()), cx);
8291 assert_eq!(
8292 view.text(cx),
8293 "
8294 {a}
8295
8296 /*
8297 *
8298 "
8299 .unindent()
8300 );
8301 assert_eq!(
8302 view.selected_display_ranges(cx),
8303 [DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)]
8304 );
8305 });
8306 }
8307
8308 #[gpui::test]
8309 async fn test_snippets(cx: &mut gpui::TestAppContext) {
8310 let settings = cx.read(Settings::test);
8311
8312 let text = "
8313 a. b
8314 a. b
8315 a. b
8316 "
8317 .unindent();
8318 let buffer = cx.update(|cx| MultiBuffer::build_simple(&text, cx));
8319 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8320
8321 editor.update(cx, |editor, cx| {
8322 let buffer = &editor.snapshot(cx).buffer_snapshot;
8323 let snippet = Snippet::parse("f(${1:one}, ${2:two}, ${1:three})$0").unwrap();
8324 let insertion_ranges = [
8325 Point::new(0, 2).to_offset(buffer)..Point::new(0, 2).to_offset(buffer),
8326 Point::new(1, 2).to_offset(buffer)..Point::new(1, 2).to_offset(buffer),
8327 Point::new(2, 2).to_offset(buffer)..Point::new(2, 2).to_offset(buffer),
8328 ];
8329
8330 editor
8331 .insert_snippet(&insertion_ranges, snippet, cx)
8332 .unwrap();
8333 assert_eq!(
8334 editor.text(cx),
8335 "
8336 a.f(one, two, three) b
8337 a.f(one, two, three) b
8338 a.f(one, two, three) b
8339 "
8340 .unindent()
8341 );
8342 assert_eq!(
8343 editor.selected_ranges::<Point>(cx),
8344 &[
8345 Point::new(0, 4)..Point::new(0, 7),
8346 Point::new(0, 14)..Point::new(0, 19),
8347 Point::new(1, 4)..Point::new(1, 7),
8348 Point::new(1, 14)..Point::new(1, 19),
8349 Point::new(2, 4)..Point::new(2, 7),
8350 Point::new(2, 14)..Point::new(2, 19),
8351 ]
8352 );
8353
8354 // Can't move earlier than the first tab stop
8355 editor.move_to_prev_snippet_tabstop(cx);
8356 assert_eq!(
8357 editor.selected_ranges::<Point>(cx),
8358 &[
8359 Point::new(0, 4)..Point::new(0, 7),
8360 Point::new(0, 14)..Point::new(0, 19),
8361 Point::new(1, 4)..Point::new(1, 7),
8362 Point::new(1, 14)..Point::new(1, 19),
8363 Point::new(2, 4)..Point::new(2, 7),
8364 Point::new(2, 14)..Point::new(2, 19),
8365 ]
8366 );
8367
8368 assert!(editor.move_to_next_snippet_tabstop(cx));
8369 assert_eq!(
8370 editor.selected_ranges::<Point>(cx),
8371 &[
8372 Point::new(0, 9)..Point::new(0, 12),
8373 Point::new(1, 9)..Point::new(1, 12),
8374 Point::new(2, 9)..Point::new(2, 12)
8375 ]
8376 );
8377
8378 editor.move_to_prev_snippet_tabstop(cx);
8379 assert_eq!(
8380 editor.selected_ranges::<Point>(cx),
8381 &[
8382 Point::new(0, 4)..Point::new(0, 7),
8383 Point::new(0, 14)..Point::new(0, 19),
8384 Point::new(1, 4)..Point::new(1, 7),
8385 Point::new(1, 14)..Point::new(1, 19),
8386 Point::new(2, 4)..Point::new(2, 7),
8387 Point::new(2, 14)..Point::new(2, 19),
8388 ]
8389 );
8390
8391 assert!(editor.move_to_next_snippet_tabstop(cx));
8392 assert!(editor.move_to_next_snippet_tabstop(cx));
8393 assert_eq!(
8394 editor.selected_ranges::<Point>(cx),
8395 &[
8396 Point::new(0, 20)..Point::new(0, 20),
8397 Point::new(1, 20)..Point::new(1, 20),
8398 Point::new(2, 20)..Point::new(2, 20)
8399 ]
8400 );
8401
8402 // As soon as the last tab stop is reached, snippet state is gone
8403 editor.move_to_prev_snippet_tabstop(cx);
8404 assert_eq!(
8405 editor.selected_ranges::<Point>(cx),
8406 &[
8407 Point::new(0, 20)..Point::new(0, 20),
8408 Point::new(1, 20)..Point::new(1, 20),
8409 Point::new(2, 20)..Point::new(2, 20)
8410 ]
8411 );
8412 });
8413 }
8414
8415 #[gpui::test]
8416 async fn test_completion(cx: &mut gpui::TestAppContext) {
8417 let settings = cx.read(Settings::test);
8418
8419 let (mut language_server_config, mut fake_servers) = LanguageServerConfig::fake();
8420 language_server_config.set_fake_capabilities(lsp::ServerCapabilities {
8421 completion_provider: Some(lsp::CompletionOptions {
8422 trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
8423 ..Default::default()
8424 }),
8425 ..Default::default()
8426 });
8427 let language = Arc::new(Language::new(
8428 LanguageConfig {
8429 name: "Rust".into(),
8430 path_suffixes: vec!["rs".to_string()],
8431 language_server: Some(language_server_config),
8432 ..Default::default()
8433 },
8434 Some(tree_sitter_rust::language()),
8435 ));
8436
8437 let text = "
8438 one
8439 two
8440 three
8441 "
8442 .unindent();
8443
8444 let fs = FakeFs::new(cx.background().clone());
8445 fs.insert_file("/file.rs", text).await;
8446
8447 let project = Project::test(fs, cx);
8448 project.update(cx, |project, _| project.languages().add(language));
8449
8450 let worktree_id = project
8451 .update(cx, |project, cx| {
8452 project.find_or_create_local_worktree("/file.rs", true, cx)
8453 })
8454 .await
8455 .unwrap()
8456 .0
8457 .read_with(cx, |tree, _| tree.id());
8458 let buffer = project
8459 .update(cx, |project, cx| project.open_buffer((worktree_id, ""), cx))
8460 .await
8461 .unwrap();
8462 let mut fake_server = fake_servers.next().await.unwrap();
8463
8464 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8465 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8466
8467 editor.update(cx, |editor, cx| {
8468 editor.project = Some(project);
8469 editor.select_ranges([Point::new(0, 3)..Point::new(0, 3)], None, cx);
8470 editor.handle_input(&Input(".".to_string()), cx);
8471 });
8472
8473 handle_completion_request(
8474 &mut fake_server,
8475 "/file.rs",
8476 Point::new(0, 4),
8477 vec![
8478 (Point::new(0, 4)..Point::new(0, 4), "first_completion"),
8479 (Point::new(0, 4)..Point::new(0, 4), "second_completion"),
8480 ],
8481 )
8482 .await;
8483 editor
8484 .condition(&cx, |editor, _| editor.context_menu_visible())
8485 .await;
8486
8487 let apply_additional_edits = editor.update(cx, |editor, cx| {
8488 editor.move_down(&MoveDown, cx);
8489 let apply_additional_edits = editor
8490 .confirm_completion(&ConfirmCompletion(None), cx)
8491 .unwrap();
8492 assert_eq!(
8493 editor.text(cx),
8494 "
8495 one.second_completion
8496 two
8497 three
8498 "
8499 .unindent()
8500 );
8501 apply_additional_edits
8502 });
8503
8504 handle_resolve_completion_request(
8505 &mut fake_server,
8506 Some((Point::new(2, 5)..Point::new(2, 5), "\nadditional edit")),
8507 )
8508 .await;
8509 apply_additional_edits.await.unwrap();
8510 assert_eq!(
8511 editor.read_with(cx, |editor, cx| editor.text(cx)),
8512 "
8513 one.second_completion
8514 two
8515 three
8516 additional edit
8517 "
8518 .unindent()
8519 );
8520
8521 editor.update(cx, |editor, cx| {
8522 editor.select_ranges(
8523 [
8524 Point::new(1, 3)..Point::new(1, 3),
8525 Point::new(2, 5)..Point::new(2, 5),
8526 ],
8527 None,
8528 cx,
8529 );
8530
8531 editor.handle_input(&Input(" ".to_string()), cx);
8532 assert!(editor.context_menu.is_none());
8533 editor.handle_input(&Input("s".to_string()), cx);
8534 assert!(editor.context_menu.is_none());
8535 });
8536
8537 handle_completion_request(
8538 &mut fake_server,
8539 "/file.rs",
8540 Point::new(2, 7),
8541 vec![
8542 (Point::new(2, 6)..Point::new(2, 7), "fourth_completion"),
8543 (Point::new(2, 6)..Point::new(2, 7), "fifth_completion"),
8544 (Point::new(2, 6)..Point::new(2, 7), "sixth_completion"),
8545 ],
8546 )
8547 .await;
8548 editor
8549 .condition(&cx, |editor, _| editor.context_menu_visible())
8550 .await;
8551
8552 editor.update(cx, |editor, cx| {
8553 editor.handle_input(&Input("i".to_string()), cx);
8554 });
8555
8556 handle_completion_request(
8557 &mut fake_server,
8558 "/file.rs",
8559 Point::new(2, 8),
8560 vec![
8561 (Point::new(2, 6)..Point::new(2, 8), "fourth_completion"),
8562 (Point::new(2, 6)..Point::new(2, 8), "fifth_completion"),
8563 (Point::new(2, 6)..Point::new(2, 8), "sixth_completion"),
8564 ],
8565 )
8566 .await;
8567 editor
8568 .condition(&cx, |editor, _| editor.context_menu_visible())
8569 .await;
8570
8571 let apply_additional_edits = editor.update(cx, |editor, cx| {
8572 let apply_additional_edits = editor
8573 .confirm_completion(&ConfirmCompletion(None), cx)
8574 .unwrap();
8575 assert_eq!(
8576 editor.text(cx),
8577 "
8578 one.second_completion
8579 two sixth_completion
8580 three sixth_completion
8581 additional edit
8582 "
8583 .unindent()
8584 );
8585 apply_additional_edits
8586 });
8587 handle_resolve_completion_request(&mut fake_server, None).await;
8588 apply_additional_edits.await.unwrap();
8589
8590 async fn handle_completion_request(
8591 fake: &mut FakeLanguageServer,
8592 path: &'static str,
8593 position: Point,
8594 completions: Vec<(Range<Point>, &'static str)>,
8595 ) {
8596 fake.handle_request::<lsp::request::Completion, _>(move |params, _| {
8597 assert_eq!(
8598 params.text_document_position.text_document.uri,
8599 lsp::Url::from_file_path(path).unwrap()
8600 );
8601 assert_eq!(
8602 params.text_document_position.position,
8603 lsp::Position::new(position.row, position.column)
8604 );
8605 Some(lsp::CompletionResponse::Array(
8606 completions
8607 .iter()
8608 .map(|(range, new_text)| lsp::CompletionItem {
8609 label: new_text.to_string(),
8610 text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
8611 range: lsp::Range::new(
8612 lsp::Position::new(range.start.row, range.start.column),
8613 lsp::Position::new(range.start.row, range.start.column),
8614 ),
8615 new_text: new_text.to_string(),
8616 })),
8617 ..Default::default()
8618 })
8619 .collect(),
8620 ))
8621 })
8622 .next()
8623 .await;
8624 }
8625
8626 async fn handle_resolve_completion_request(
8627 fake: &mut FakeLanguageServer,
8628 edit: Option<(Range<Point>, &'static str)>,
8629 ) {
8630 fake.handle_request::<lsp::request::ResolveCompletionItem, _>(move |_, _| {
8631 lsp::CompletionItem {
8632 additional_text_edits: edit.clone().map(|(range, new_text)| {
8633 vec![lsp::TextEdit::new(
8634 lsp::Range::new(
8635 lsp::Position::new(range.start.row, range.start.column),
8636 lsp::Position::new(range.end.row, range.end.column),
8637 ),
8638 new_text.to_string(),
8639 )]
8640 }),
8641 ..Default::default()
8642 }
8643 })
8644 .next()
8645 .await;
8646 }
8647 }
8648
8649 #[gpui::test]
8650 async fn test_toggle_comment(cx: &mut gpui::TestAppContext) {
8651 let settings = cx.read(Settings::test);
8652 let language = Arc::new(Language::new(
8653 LanguageConfig {
8654 line_comment: Some("// ".to_string()),
8655 ..Default::default()
8656 },
8657 Some(tree_sitter_rust::language()),
8658 ));
8659
8660 let text = "
8661 fn a() {
8662 //b();
8663 // c();
8664 // d();
8665 }
8666 "
8667 .unindent();
8668
8669 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8670 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8671 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8672
8673 view.update(cx, |editor, cx| {
8674 // If multiple selections intersect a line, the line is only
8675 // toggled once.
8676 editor.select_display_ranges(
8677 &[
8678 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
8679 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
8680 ],
8681 cx,
8682 );
8683 editor.toggle_comments(&ToggleComments, cx);
8684 assert_eq!(
8685 editor.text(cx),
8686 "
8687 fn a() {
8688 b();
8689 c();
8690 d();
8691 }
8692 "
8693 .unindent()
8694 );
8695
8696 // The comment prefix is inserted at the same column for every line
8697 // in a selection.
8698 editor.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx);
8699 editor.toggle_comments(&ToggleComments, cx);
8700 assert_eq!(
8701 editor.text(cx),
8702 "
8703 fn a() {
8704 // b();
8705 // c();
8706 // d();
8707 }
8708 "
8709 .unindent()
8710 );
8711
8712 // If a selection ends at the beginning of a line, that line is not toggled.
8713 editor.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx);
8714 editor.toggle_comments(&ToggleComments, cx);
8715 assert_eq!(
8716 editor.text(cx),
8717 "
8718 fn a() {
8719 // b();
8720 c();
8721 // d();
8722 }
8723 "
8724 .unindent()
8725 );
8726 });
8727 }
8728
8729 #[gpui::test]
8730 fn test_editing_disjoint_excerpts(cx: &mut gpui::MutableAppContext) {
8731 let settings = Settings::test(cx);
8732 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8733 let multibuffer = cx.add_model(|cx| {
8734 let mut multibuffer = MultiBuffer::new(0);
8735 multibuffer.push_excerpts(
8736 buffer.clone(),
8737 [
8738 Point::new(0, 0)..Point::new(0, 4),
8739 Point::new(1, 0)..Point::new(1, 4),
8740 ],
8741 cx,
8742 );
8743 multibuffer
8744 });
8745
8746 assert_eq!(multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb");
8747
8748 let (_, view) = cx.add_window(Default::default(), |cx| {
8749 build_editor(multibuffer, settings, cx)
8750 });
8751 view.update(cx, |view, cx| {
8752 assert_eq!(view.text(cx), "aaaa\nbbbb");
8753 view.select_ranges(
8754 [
8755 Point::new(0, 0)..Point::new(0, 0),
8756 Point::new(1, 0)..Point::new(1, 0),
8757 ],
8758 None,
8759 cx,
8760 );
8761
8762 view.handle_input(&Input("X".to_string()), cx);
8763 assert_eq!(view.text(cx), "Xaaaa\nXbbbb");
8764 assert_eq!(
8765 view.selected_ranges(cx),
8766 [
8767 Point::new(0, 1)..Point::new(0, 1),
8768 Point::new(1, 1)..Point::new(1, 1),
8769 ]
8770 )
8771 });
8772 }
8773
8774 #[gpui::test]
8775 fn test_editing_overlapping_excerpts(cx: &mut gpui::MutableAppContext) {
8776 let settings = Settings::test(cx);
8777 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8778 let multibuffer = cx.add_model(|cx| {
8779 let mut multibuffer = MultiBuffer::new(0);
8780 multibuffer.push_excerpts(
8781 buffer,
8782 [
8783 Point::new(0, 0)..Point::new(1, 4),
8784 Point::new(1, 0)..Point::new(2, 4),
8785 ],
8786 cx,
8787 );
8788 multibuffer
8789 });
8790
8791 assert_eq!(
8792 multibuffer.read(cx).read(cx).text(),
8793 "aaaa\nbbbb\nbbbb\ncccc"
8794 );
8795
8796 let (_, view) = cx.add_window(Default::default(), |cx| {
8797 build_editor(multibuffer, settings, cx)
8798 });
8799 view.update(cx, |view, cx| {
8800 view.select_ranges(
8801 [
8802 Point::new(1, 1)..Point::new(1, 1),
8803 Point::new(2, 3)..Point::new(2, 3),
8804 ],
8805 None,
8806 cx,
8807 );
8808
8809 view.handle_input(&Input("X".to_string()), cx);
8810 assert_eq!(view.text(cx), "aaaa\nbXbbXb\nbXbbXb\ncccc");
8811 assert_eq!(
8812 view.selected_ranges(cx),
8813 [
8814 Point::new(1, 2)..Point::new(1, 2),
8815 Point::new(2, 5)..Point::new(2, 5),
8816 ]
8817 );
8818
8819 view.newline(&Newline, cx);
8820 assert_eq!(view.text(cx), "aaaa\nbX\nbbX\nb\nbX\nbbX\nb\ncccc");
8821 assert_eq!(
8822 view.selected_ranges(cx),
8823 [
8824 Point::new(2, 0)..Point::new(2, 0),
8825 Point::new(6, 0)..Point::new(6, 0),
8826 ]
8827 );
8828 });
8829 }
8830
8831 #[gpui::test]
8832 fn test_refresh_selections(cx: &mut gpui::MutableAppContext) {
8833 let settings = Settings::test(cx);
8834 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8835 let mut excerpt1_id = None;
8836 let multibuffer = cx.add_model(|cx| {
8837 let mut multibuffer = MultiBuffer::new(0);
8838 excerpt1_id = multibuffer
8839 .push_excerpts(
8840 buffer.clone(),
8841 [
8842 Point::new(0, 0)..Point::new(1, 4),
8843 Point::new(1, 0)..Point::new(2, 4),
8844 ],
8845 cx,
8846 )
8847 .into_iter()
8848 .next();
8849 multibuffer
8850 });
8851 assert_eq!(
8852 multibuffer.read(cx).read(cx).text(),
8853 "aaaa\nbbbb\nbbbb\ncccc"
8854 );
8855 let (_, editor) = cx.add_window(Default::default(), |cx| {
8856 let mut editor = build_editor(multibuffer.clone(), settings, cx);
8857 editor.select_ranges(
8858 [
8859 Point::new(1, 3)..Point::new(1, 3),
8860 Point::new(2, 1)..Point::new(2, 1),
8861 ],
8862 None,
8863 cx,
8864 );
8865 editor
8866 });
8867
8868 // Refreshing selections is a no-op when excerpts haven't changed.
8869 editor.update(cx, |editor, cx| {
8870 editor.refresh_selections(cx);
8871 assert_eq!(
8872 editor.selected_ranges(cx),
8873 [
8874 Point::new(1, 3)..Point::new(1, 3),
8875 Point::new(2, 1)..Point::new(2, 1),
8876 ]
8877 );
8878 });
8879
8880 multibuffer.update(cx, |multibuffer, cx| {
8881 multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx);
8882 });
8883 editor.update(cx, |editor, cx| {
8884 // Removing an excerpt causes the first selection to become degenerate.
8885 assert_eq!(
8886 editor.selected_ranges(cx),
8887 [
8888 Point::new(0, 0)..Point::new(0, 0),
8889 Point::new(0, 1)..Point::new(0, 1)
8890 ]
8891 );
8892
8893 // Refreshing selections will relocate the first selection to the original buffer
8894 // location.
8895 editor.refresh_selections(cx);
8896 assert_eq!(
8897 editor.selected_ranges(cx),
8898 [
8899 Point::new(0, 1)..Point::new(0, 1),
8900 Point::new(0, 3)..Point::new(0, 3)
8901 ]
8902 );
8903 });
8904 }
8905
8906 #[gpui::test]
8907 async fn test_extra_newline_insertion(cx: &mut gpui::TestAppContext) {
8908 let settings = cx.read(Settings::test);
8909 let language = Arc::new(Language::new(
8910 LanguageConfig {
8911 brackets: vec![
8912 BracketPair {
8913 start: "{".to_string(),
8914 end: "}".to_string(),
8915 close: true,
8916 newline: true,
8917 },
8918 BracketPair {
8919 start: "/* ".to_string(),
8920 end: " */".to_string(),
8921 close: true,
8922 newline: true,
8923 },
8924 ],
8925 ..Default::default()
8926 },
8927 Some(tree_sitter_rust::language()),
8928 ));
8929
8930 let text = concat!(
8931 "{ }\n", // Suppress rustfmt
8932 " x\n", //
8933 " /* */\n", //
8934 "x\n", //
8935 "{{} }\n", //
8936 );
8937
8938 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8939 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8940 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8941 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
8942 .await;
8943
8944 view.update(cx, |view, cx| {
8945 view.select_display_ranges(
8946 &[
8947 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
8948 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
8949 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
8950 ],
8951 cx,
8952 );
8953 view.newline(&Newline, cx);
8954
8955 assert_eq!(
8956 view.buffer().read(cx).read(cx).text(),
8957 concat!(
8958 "{ \n", // Suppress rustfmt
8959 "\n", //
8960 "}\n", //
8961 " x\n", //
8962 " /* \n", //
8963 " \n", //
8964 " */\n", //
8965 "x\n", //
8966 "{{} \n", //
8967 "}\n", //
8968 )
8969 );
8970 });
8971 }
8972
8973 #[gpui::test]
8974 fn test_highlighted_ranges(cx: &mut gpui::MutableAppContext) {
8975 let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
8976 let settings = Settings::test(&cx);
8977 let (_, editor) = cx.add_window(Default::default(), |cx| {
8978 build_editor(buffer.clone(), settings, cx)
8979 });
8980
8981 editor.update(cx, |editor, cx| {
8982 struct Type1;
8983 struct Type2;
8984
8985 let buffer = buffer.read(cx).snapshot(cx);
8986
8987 let anchor_range = |range: Range<Point>| {
8988 buffer.anchor_after(range.start)..buffer.anchor_after(range.end)
8989 };
8990
8991 editor.highlight_background::<Type1>(
8992 vec![
8993 anchor_range(Point::new(2, 1)..Point::new(2, 3)),
8994 anchor_range(Point::new(4, 2)..Point::new(4, 4)),
8995 anchor_range(Point::new(6, 3)..Point::new(6, 5)),
8996 anchor_range(Point::new(8, 4)..Point::new(8, 6)),
8997 ],
8998 Color::red(),
8999 cx,
9000 );
9001 editor.highlight_background::<Type2>(
9002 vec![
9003 anchor_range(Point::new(3, 2)..Point::new(3, 5)),
9004 anchor_range(Point::new(5, 3)..Point::new(5, 6)),
9005 anchor_range(Point::new(7, 4)..Point::new(7, 7)),
9006 anchor_range(Point::new(9, 5)..Point::new(9, 8)),
9007 ],
9008 Color::green(),
9009 cx,
9010 );
9011
9012 let snapshot = editor.snapshot(cx);
9013 let mut highlighted_ranges = editor.background_highlights_in_range(
9014 anchor_range(Point::new(3, 4)..Point::new(7, 4)),
9015 &snapshot,
9016 );
9017 // Enforce a consistent ordering based on color without relying on the ordering of the
9018 // highlight's `TypeId` which is non-deterministic.
9019 highlighted_ranges.sort_unstable_by_key(|(_, color)| *color);
9020 assert_eq!(
9021 highlighted_ranges,
9022 &[
9023 (
9024 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 5),
9025 Color::green(),
9026 ),
9027 (
9028 DisplayPoint::new(5, 3)..DisplayPoint::new(5, 6),
9029 Color::green(),
9030 ),
9031 (
9032 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 4),
9033 Color::red(),
9034 ),
9035 (
9036 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
9037 Color::red(),
9038 ),
9039 ]
9040 );
9041 assert_eq!(
9042 editor.background_highlights_in_range(
9043 anchor_range(Point::new(5, 6)..Point::new(6, 4)),
9044 &snapshot,
9045 ),
9046 &[(
9047 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
9048 Color::red(),
9049 )]
9050 );
9051 });
9052 }
9053
9054 #[test]
9055 fn test_combine_syntax_and_fuzzy_match_highlights() {
9056 let string = "abcdefghijklmnop";
9057 let default = HighlightStyle::default();
9058 let syntax_ranges = [
9059 (
9060 0..3,
9061 HighlightStyle {
9062 color: Color::red(),
9063 ..default
9064 },
9065 ),
9066 (
9067 4..8,
9068 HighlightStyle {
9069 color: Color::green(),
9070 ..default
9071 },
9072 ),
9073 ];
9074 let match_indices = [4, 6, 7, 8];
9075 assert_eq!(
9076 combine_syntax_and_fuzzy_match_highlights(
9077 &string,
9078 default,
9079 syntax_ranges.into_iter(),
9080 &match_indices,
9081 ),
9082 &[
9083 (
9084 0..3,
9085 HighlightStyle {
9086 color: Color::red(),
9087 ..default
9088 },
9089 ),
9090 (
9091 4..5,
9092 HighlightStyle {
9093 color: Color::green(),
9094 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
9095 ..default
9096 },
9097 ),
9098 (
9099 5..6,
9100 HighlightStyle {
9101 color: Color::green(),
9102 ..default
9103 },
9104 ),
9105 (
9106 6..8,
9107 HighlightStyle {
9108 color: Color::green(),
9109 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
9110 ..default
9111 },
9112 ),
9113 (
9114 8..9,
9115 HighlightStyle {
9116 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
9117 ..default
9118 },
9119 ),
9120 ]
9121 );
9122 }
9123
9124 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
9125 let point = DisplayPoint::new(row as u32, column as u32);
9126 point..point
9127 }
9128
9129 fn build_editor(
9130 buffer: ModelHandle<MultiBuffer>,
9131 settings: Settings,
9132 cx: &mut ViewContext<Editor>,
9133 ) -> Editor {
9134 let settings = watch::channel_with(settings);
9135 Editor::new(EditorMode::Full, buffer, None, settings.1, None, cx)
9136 }
9137}
9138
9139trait RangeExt<T> {
9140 fn sorted(&self) -> Range<T>;
9141 fn to_inclusive(&self) -> RangeInclusive<T>;
9142}
9143
9144impl<T: Ord + Clone> RangeExt<T> for Range<T> {
9145 fn sorted(&self) -> Self {
9146 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
9147 }
9148
9149 fn to_inclusive(&self) -> RangeInclusive<T> {
9150 self.start.clone()..=self.end.clone()
9151 }
9152}