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(false, 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(true, 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(true, 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(false, 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 cx.focus(&rename_editor);
4467 let block_id = this.insert_blocks(
4468 [BlockProperties {
4469 position: range.start.clone(),
4470 height: 1,
4471 render: Arc::new({
4472 let editor = rename_editor.clone();
4473 move |cx: &BlockContext| {
4474 ChildView::new(editor.clone())
4475 .contained()
4476 .with_padding_left(cx.anchor_x)
4477 .boxed()
4478 }
4479 }),
4480 disposition: BlockDisposition::Below,
4481 }],
4482 cx,
4483 )[0];
4484 this.pending_rename = Some(RenameState {
4485 range,
4486 old_name,
4487 editor: rename_editor,
4488 block_id,
4489 });
4490 });
4491 }
4492
4493 Ok(())
4494 }))
4495 }
4496
4497 pub fn confirm_rename(
4498 workspace: &mut Workspace,
4499 _: &ConfirmRename,
4500 cx: &mut ViewContext<Workspace>,
4501 ) -> Option<Task<Result<()>>> {
4502 let editor = workspace.active_item(cx)?.act_as::<Editor>(cx)?;
4503
4504 let (buffer, range, old_name, new_name) = editor.update(cx, |editor, cx| {
4505 let rename = editor.take_rename(false, cx)?;
4506 let buffer = editor.buffer.read(cx);
4507 let (start_buffer, start) =
4508 buffer.text_anchor_for_position(rename.range.start.clone(), cx)?;
4509 let (end_buffer, end) =
4510 buffer.text_anchor_for_position(rename.range.end.clone(), cx)?;
4511 if start_buffer == end_buffer {
4512 let new_name = rename.editor.read(cx).text(cx);
4513 Some((start_buffer, start..end, rename.old_name, new_name))
4514 } else {
4515 None
4516 }
4517 })?;
4518
4519 let rename = workspace.project().clone().update(cx, |project, cx| {
4520 project.perform_rename(
4521 buffer.clone(),
4522 range.start.clone(),
4523 new_name.clone(),
4524 true,
4525 cx,
4526 )
4527 });
4528
4529 Some(cx.spawn(|workspace, mut cx| async move {
4530 let project_transaction = rename.await?;
4531 Self::open_project_transaction(
4532 editor.clone(),
4533 workspace,
4534 project_transaction,
4535 format!("Rename: {} → {}", old_name, new_name),
4536 cx.clone(),
4537 )
4538 .await?;
4539
4540 editor.update(&mut cx, |editor, cx| {
4541 editor.refresh_document_highlights(cx);
4542 });
4543 Ok(())
4544 }))
4545 }
4546
4547 fn take_rename(
4548 &mut self,
4549 moving_cursor: bool,
4550 cx: &mut ViewContext<Self>,
4551 ) -> Option<RenameState> {
4552 let rename = self.pending_rename.take()?;
4553 self.remove_blocks([rename.block_id].into_iter().collect(), cx);
4554 self.clear_text_highlights::<Rename>(cx);
4555
4556 if moving_cursor {
4557 let cursor_in_rename_editor =
4558 rename.editor.read(cx).newest_selection::<usize>(cx).head();
4559
4560 // Update the selection to match the position of the selection inside
4561 // the rename editor.
4562 let snapshot = self.buffer.read(cx).read(cx);
4563 let rename_range = rename.range.to_offset(&snapshot);
4564 let cursor_in_editor = snapshot
4565 .clip_offset(rename_range.start + cursor_in_rename_editor, Bias::Left)
4566 .min(rename_range.end);
4567 drop(snapshot);
4568
4569 self.update_selections(
4570 vec![Selection {
4571 id: self.newest_anchor_selection().id,
4572 start: cursor_in_editor,
4573 end: cursor_in_editor,
4574 reversed: false,
4575 goal: SelectionGoal::None,
4576 }],
4577 None,
4578 cx,
4579 );
4580 }
4581
4582 Some(rename)
4583 }
4584
4585 fn invalidate_rename_range(
4586 &mut self,
4587 buffer: &MultiBufferSnapshot,
4588 cx: &mut ViewContext<Self>,
4589 ) {
4590 if let Some(rename) = self.pending_rename.as_ref() {
4591 if self.selections.len() == 1 {
4592 let head = self.selections[0].head().to_offset(buffer);
4593 let range = rename.range.to_offset(buffer).to_inclusive();
4594 if range.contains(&head) {
4595 return;
4596 }
4597 }
4598 let rename = self.pending_rename.take().unwrap();
4599 self.remove_blocks([rename.block_id].into_iter().collect(), cx);
4600 self.clear_background_highlights::<Rename>(cx);
4601 }
4602 }
4603
4604 #[cfg(any(test, feature = "test-support"))]
4605 pub fn pending_rename(&self) -> Option<&RenameState> {
4606 self.pending_rename.as_ref()
4607 }
4608
4609 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
4610 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
4611 let buffer = self.buffer.read(cx).snapshot(cx);
4612 let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
4613 let is_valid = buffer
4614 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone())
4615 .any(|entry| {
4616 entry.diagnostic.is_primary
4617 && !entry.range.is_empty()
4618 && entry.range.start == primary_range_start
4619 && entry.diagnostic.message == active_diagnostics.primary_message
4620 });
4621
4622 if is_valid != active_diagnostics.is_valid {
4623 active_diagnostics.is_valid = is_valid;
4624 let mut new_styles = HashMap::default();
4625 for (block_id, diagnostic) in &active_diagnostics.blocks {
4626 new_styles.insert(
4627 *block_id,
4628 diagnostic_block_renderer(
4629 diagnostic.clone(),
4630 is_valid,
4631 self.settings.clone(),
4632 ),
4633 );
4634 }
4635 self.display_map
4636 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
4637 }
4638 }
4639 }
4640
4641 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) {
4642 self.dismiss_diagnostics(cx);
4643 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
4644 let buffer = self.buffer.read(cx).snapshot(cx);
4645
4646 let mut primary_range = None;
4647 let mut primary_message = None;
4648 let mut group_end = Point::zero();
4649 let diagnostic_group = buffer
4650 .diagnostic_group::<Point>(group_id)
4651 .map(|entry| {
4652 if entry.range.end > group_end {
4653 group_end = entry.range.end;
4654 }
4655 if entry.diagnostic.is_primary {
4656 primary_range = Some(entry.range.clone());
4657 primary_message = Some(entry.diagnostic.message.clone());
4658 }
4659 entry
4660 })
4661 .collect::<Vec<_>>();
4662 let primary_range = primary_range.unwrap();
4663 let primary_message = primary_message.unwrap();
4664 let primary_range =
4665 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
4666
4667 let blocks = display_map
4668 .insert_blocks(
4669 diagnostic_group.iter().map(|entry| {
4670 let diagnostic = entry.diagnostic.clone();
4671 let message_height = diagnostic.message.lines().count() as u8;
4672 BlockProperties {
4673 position: buffer.anchor_after(entry.range.start),
4674 height: message_height,
4675 render: diagnostic_block_renderer(
4676 diagnostic,
4677 true,
4678 self.settings.clone(),
4679 ),
4680 disposition: BlockDisposition::Below,
4681 }
4682 }),
4683 cx,
4684 )
4685 .into_iter()
4686 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
4687 .collect();
4688
4689 Some(ActiveDiagnosticGroup {
4690 primary_range,
4691 primary_message,
4692 blocks,
4693 is_valid: true,
4694 })
4695 });
4696 }
4697
4698 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
4699 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
4700 self.display_map.update(cx, |display_map, cx| {
4701 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
4702 });
4703 cx.notify();
4704 }
4705 }
4706
4707 fn build_columnar_selection(
4708 &mut self,
4709 display_map: &DisplaySnapshot,
4710 row: u32,
4711 columns: &Range<u32>,
4712 reversed: bool,
4713 ) -> Option<Selection<Point>> {
4714 let is_empty = columns.start == columns.end;
4715 let line_len = display_map.line_len(row);
4716 if columns.start < line_len || (is_empty && columns.start == line_len) {
4717 let start = DisplayPoint::new(row, columns.start);
4718 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
4719 Some(Selection {
4720 id: post_inc(&mut self.next_selection_id),
4721 start: start.to_point(display_map),
4722 end: end.to_point(display_map),
4723 reversed,
4724 goal: SelectionGoal::ColumnRange {
4725 start: columns.start,
4726 end: columns.end,
4727 },
4728 })
4729 } else {
4730 None
4731 }
4732 }
4733
4734 pub fn local_selections_in_range(
4735 &self,
4736 range: Range<Anchor>,
4737 display_map: &DisplaySnapshot,
4738 ) -> Vec<Selection<Point>> {
4739 let buffer = &display_map.buffer_snapshot;
4740
4741 let start_ix = match self
4742 .selections
4743 .binary_search_by(|probe| probe.end.cmp(&range.start, &buffer).unwrap())
4744 {
4745 Ok(ix) | Err(ix) => ix,
4746 };
4747 let end_ix = match self
4748 .selections
4749 .binary_search_by(|probe| probe.start.cmp(&range.end, &buffer).unwrap())
4750 {
4751 Ok(ix) => ix + 1,
4752 Err(ix) => ix,
4753 };
4754
4755 fn point_selection(
4756 selection: &Selection<Anchor>,
4757 buffer: &MultiBufferSnapshot,
4758 ) -> Selection<Point> {
4759 let start = selection.start.to_point(&buffer);
4760 let end = selection.end.to_point(&buffer);
4761 Selection {
4762 id: selection.id,
4763 start,
4764 end,
4765 reversed: selection.reversed,
4766 goal: selection.goal,
4767 }
4768 }
4769
4770 self.selections[start_ix..end_ix]
4771 .iter()
4772 .chain(
4773 self.pending_selection
4774 .as_ref()
4775 .map(|pending| &pending.selection),
4776 )
4777 .map(|s| point_selection(s, &buffer))
4778 .collect()
4779 }
4780
4781 pub fn local_selections<'a, D>(&self, cx: &'a AppContext) -> Vec<Selection<D>>
4782 where
4783 D: 'a + TextDimension + Ord + Sub<D, Output = D>,
4784 {
4785 let buffer = self.buffer.read(cx).snapshot(cx);
4786 let mut selections = self
4787 .resolve_selections::<D, _>(self.selections.iter(), &buffer)
4788 .peekable();
4789
4790 let mut pending_selection = self.pending_selection::<D>(&buffer);
4791
4792 iter::from_fn(move || {
4793 if let Some(pending) = pending_selection.as_mut() {
4794 while let Some(next_selection) = selections.peek() {
4795 if pending.start <= next_selection.end && pending.end >= next_selection.start {
4796 let next_selection = selections.next().unwrap();
4797 if next_selection.start < pending.start {
4798 pending.start = next_selection.start;
4799 }
4800 if next_selection.end > pending.end {
4801 pending.end = next_selection.end;
4802 }
4803 } else if next_selection.end < pending.start {
4804 return selections.next();
4805 } else {
4806 break;
4807 }
4808 }
4809
4810 pending_selection.take()
4811 } else {
4812 selections.next()
4813 }
4814 })
4815 .collect()
4816 }
4817
4818 fn resolve_selections<'a, D, I>(
4819 &self,
4820 selections: I,
4821 snapshot: &MultiBufferSnapshot,
4822 ) -> impl 'a + Iterator<Item = Selection<D>>
4823 where
4824 D: TextDimension + Ord + Sub<D, Output = D>,
4825 I: 'a + IntoIterator<Item = &'a Selection<Anchor>>,
4826 {
4827 let (to_summarize, selections) = selections.into_iter().tee();
4828 let mut summaries = snapshot
4829 .summaries_for_anchors::<D, _>(to_summarize.flat_map(|s| [&s.start, &s.end]))
4830 .into_iter();
4831 selections.map(move |s| Selection {
4832 id: s.id,
4833 start: summaries.next().unwrap(),
4834 end: summaries.next().unwrap(),
4835 reversed: s.reversed,
4836 goal: s.goal,
4837 })
4838 }
4839
4840 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4841 &self,
4842 snapshot: &MultiBufferSnapshot,
4843 ) -> Option<Selection<D>> {
4844 self.pending_selection
4845 .as_ref()
4846 .map(|pending| self.resolve_selection(&pending.selection, &snapshot))
4847 }
4848
4849 fn resolve_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4850 &self,
4851 selection: &Selection<Anchor>,
4852 buffer: &MultiBufferSnapshot,
4853 ) -> Selection<D> {
4854 Selection {
4855 id: selection.id,
4856 start: selection.start.summary::<D>(&buffer),
4857 end: selection.end.summary::<D>(&buffer),
4858 reversed: selection.reversed,
4859 goal: selection.goal,
4860 }
4861 }
4862
4863 fn selection_count<'a>(&self) -> usize {
4864 let mut count = self.selections.len();
4865 if self.pending_selection.is_some() {
4866 count += 1;
4867 }
4868 count
4869 }
4870
4871 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4872 &self,
4873 cx: &AppContext,
4874 ) -> Selection<D> {
4875 let snapshot = self.buffer.read(cx).read(cx);
4876 self.selections
4877 .iter()
4878 .min_by_key(|s| s.id)
4879 .map(|selection| self.resolve_selection(selection, &snapshot))
4880 .or_else(|| self.pending_selection(&snapshot))
4881 .unwrap()
4882 }
4883
4884 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4885 &self,
4886 cx: &AppContext,
4887 ) -> Selection<D> {
4888 self.resolve_selection(
4889 self.newest_anchor_selection(),
4890 &self.buffer.read(cx).read(cx),
4891 )
4892 }
4893
4894 pub fn newest_selection_with_snapshot<D: TextDimension + Ord + Sub<D, Output = D>>(
4895 &self,
4896 snapshot: &MultiBufferSnapshot,
4897 ) -> Selection<D> {
4898 self.resolve_selection(self.newest_anchor_selection(), snapshot)
4899 }
4900
4901 pub fn newest_anchor_selection(&self) -> &Selection<Anchor> {
4902 self.pending_selection
4903 .as_ref()
4904 .map(|s| &s.selection)
4905 .or_else(|| self.selections.iter().max_by_key(|s| s.id))
4906 .unwrap()
4907 }
4908
4909 pub fn update_selections<T>(
4910 &mut self,
4911 mut selections: Vec<Selection<T>>,
4912 autoscroll: Option<Autoscroll>,
4913 cx: &mut ViewContext<Self>,
4914 ) where
4915 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
4916 {
4917 let buffer = self.buffer.read(cx).snapshot(cx);
4918 selections.sort_unstable_by_key(|s| s.start);
4919
4920 // Merge overlapping selections.
4921 let mut i = 1;
4922 while i < selections.len() {
4923 if selections[i - 1].end >= selections[i].start {
4924 let removed = selections.remove(i);
4925 if removed.start < selections[i - 1].start {
4926 selections[i - 1].start = removed.start;
4927 }
4928 if removed.end > selections[i - 1].end {
4929 selections[i - 1].end = removed.end;
4930 }
4931 } else {
4932 i += 1;
4933 }
4934 }
4935
4936 if let Some(autoscroll) = autoscroll {
4937 self.request_autoscroll(autoscroll, cx);
4938 }
4939
4940 self.set_selections(
4941 Arc::from_iter(selections.into_iter().map(|selection| {
4942 let end_bias = if selection.end > selection.start {
4943 Bias::Left
4944 } else {
4945 Bias::Right
4946 };
4947 Selection {
4948 id: selection.id,
4949 start: buffer.anchor_after(selection.start),
4950 end: buffer.anchor_at(selection.end, end_bias),
4951 reversed: selection.reversed,
4952 goal: selection.goal,
4953 }
4954 })),
4955 None,
4956 cx,
4957 );
4958 }
4959
4960 /// Compute new ranges for any selections that were located in excerpts that have
4961 /// since been removed.
4962 ///
4963 /// Returns a `HashMap` indicating which selections whose former head position
4964 /// was no longer present. The keys of the map are selection ids. The values are
4965 /// the id of the new excerpt where the head of the selection has been moved.
4966 pub fn refresh_selections(&mut self, cx: &mut ViewContext<Self>) -> HashMap<usize, ExcerptId> {
4967 let snapshot = self.buffer.read(cx).read(cx);
4968 let anchors_with_status = snapshot.refresh_anchors(
4969 self.selections
4970 .iter()
4971 .flat_map(|selection| [&selection.start, &selection.end]),
4972 );
4973 let offsets =
4974 snapshot.summaries_for_anchors::<usize, _>(anchors_with_status.iter().map(|a| &a.1));
4975 let offsets = offsets.chunks(2);
4976 let statuses = anchors_with_status
4977 .chunks(2)
4978 .map(|a| (a[0].0 / 2, a[0].2, a[1].2));
4979
4980 let mut selections_with_lost_position = HashMap::default();
4981 let new_selections = offsets
4982 .zip(statuses)
4983 .map(|(offsets, (selection_ix, kept_start, kept_end))| {
4984 let selection = &self.selections[selection_ix];
4985 let kept_head = if selection.reversed {
4986 kept_start
4987 } else {
4988 kept_end
4989 };
4990 if !kept_head {
4991 selections_with_lost_position
4992 .insert(selection.id, selection.head().excerpt_id.clone());
4993 }
4994
4995 Selection {
4996 id: selection.id,
4997 start: offsets[0],
4998 end: offsets[1],
4999 reversed: selection.reversed,
5000 goal: selection.goal,
5001 }
5002 })
5003 .collect();
5004 drop(snapshot);
5005 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
5006 selections_with_lost_position
5007 }
5008
5009 fn set_selections(
5010 &mut self,
5011 selections: Arc<[Selection<Anchor>]>,
5012 pending_selection: Option<PendingSelection>,
5013 cx: &mut ViewContext<Self>,
5014 ) {
5015 let old_cursor_position = self.newest_anchor_selection().head();
5016
5017 self.selections = selections;
5018 self.pending_selection = pending_selection;
5019 if self.focused {
5020 self.buffer.update(cx, |buffer, cx| {
5021 buffer.set_active_selections(&self.selections, cx)
5022 });
5023 }
5024
5025 let display_map = self
5026 .display_map
5027 .update(cx, |display_map, cx| display_map.snapshot(cx));
5028 let buffer = &display_map.buffer_snapshot;
5029 self.add_selections_state = None;
5030 self.select_next_state = None;
5031 self.select_larger_syntax_node_stack.clear();
5032 self.autoclose_stack.invalidate(&self.selections, &buffer);
5033 self.snippet_stack.invalidate(&self.selections, &buffer);
5034 self.invalidate_rename_range(&buffer, cx);
5035
5036 let new_cursor_position = self.newest_anchor_selection().head();
5037
5038 self.push_to_nav_history(
5039 old_cursor_position.clone(),
5040 Some(new_cursor_position.to_point(&buffer)),
5041 cx,
5042 );
5043
5044 let completion_menu = match self.context_menu.as_mut() {
5045 Some(ContextMenu::Completions(menu)) => Some(menu),
5046 _ => {
5047 self.context_menu.take();
5048 None
5049 }
5050 };
5051
5052 if let Some(completion_menu) = completion_menu {
5053 let cursor_position = new_cursor_position.to_offset(&buffer);
5054 let (word_range, kind) =
5055 buffer.surrounding_word(completion_menu.initial_position.clone());
5056 if kind == Some(CharKind::Word) && word_range.to_inclusive().contains(&cursor_position)
5057 {
5058 let query = Self::completion_query(&buffer, cursor_position);
5059 cx.background()
5060 .block(completion_menu.filter(query.as_deref(), cx.background().clone()));
5061 self.show_completions(&ShowCompletions, cx);
5062 } else {
5063 self.hide_context_menu(cx);
5064 }
5065 }
5066
5067 if old_cursor_position.to_display_point(&display_map).row()
5068 != new_cursor_position.to_display_point(&display_map).row()
5069 {
5070 self.available_code_actions.take();
5071 }
5072 self.refresh_code_actions(cx);
5073 self.refresh_document_highlights(cx);
5074
5075 self.pause_cursor_blinking(cx);
5076 cx.emit(Event::SelectionsChanged);
5077 }
5078
5079 pub fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
5080 self.autoscroll_request = Some(autoscroll);
5081 cx.notify();
5082 }
5083
5084 fn start_transaction(&mut self, cx: &mut ViewContext<Self>) {
5085 self.start_transaction_at(Instant::now(), cx);
5086 }
5087
5088 fn start_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
5089 self.end_selection(cx);
5090 if let Some(tx_id) = self
5091 .buffer
5092 .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
5093 {
5094 self.selection_history
5095 .insert(tx_id, (self.selections.clone(), None));
5096 }
5097 }
5098
5099 fn end_transaction(&mut self, cx: &mut ViewContext<Self>) {
5100 self.end_transaction_at(Instant::now(), cx);
5101 }
5102
5103 fn end_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
5104 if let Some(tx_id) = self
5105 .buffer
5106 .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
5107 {
5108 if let Some((_, end_selections)) = self.selection_history.get_mut(&tx_id) {
5109 *end_selections = Some(self.selections.clone());
5110 } else {
5111 log::error!("unexpectedly ended a transaction that wasn't started by this editor");
5112 }
5113 }
5114 }
5115
5116 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
5117 log::info!("Editor::page_up");
5118 }
5119
5120 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
5121 log::info!("Editor::page_down");
5122 }
5123
5124 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
5125 let mut fold_ranges = Vec::new();
5126
5127 let selections = self.local_selections::<Point>(cx);
5128 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
5129 for selection in selections {
5130 let range = selection.display_range(&display_map).sorted();
5131 let buffer_start_row = range.start.to_point(&display_map).row;
5132
5133 for row in (0..=range.end.row()).rev() {
5134 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
5135 let fold_range = self.foldable_range_for_line(&display_map, row);
5136 if fold_range.end.row >= buffer_start_row {
5137 fold_ranges.push(fold_range);
5138 if row <= range.start.row() {
5139 break;
5140 }
5141 }
5142 }
5143 }
5144 }
5145
5146 self.fold_ranges(fold_ranges, cx);
5147 }
5148
5149 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
5150 let selections = self.local_selections::<Point>(cx);
5151 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
5152 let buffer = &display_map.buffer_snapshot;
5153 let ranges = selections
5154 .iter()
5155 .map(|s| {
5156 let range = s.display_range(&display_map).sorted();
5157 let mut start = range.start.to_point(&display_map);
5158 let mut end = range.end.to_point(&display_map);
5159 start.column = 0;
5160 end.column = buffer.line_len(end.row);
5161 start..end
5162 })
5163 .collect::<Vec<_>>();
5164 self.unfold_ranges(ranges, cx);
5165 }
5166
5167 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
5168 let max_point = display_map.max_point();
5169 if display_row >= max_point.row() {
5170 false
5171 } else {
5172 let (start_indent, is_blank) = display_map.line_indent(display_row);
5173 if is_blank {
5174 false
5175 } else {
5176 for display_row in display_row + 1..=max_point.row() {
5177 let (indent, is_blank) = display_map.line_indent(display_row);
5178 if !is_blank {
5179 return indent > start_indent;
5180 }
5181 }
5182 false
5183 }
5184 }
5185 }
5186
5187 fn foldable_range_for_line(
5188 &self,
5189 display_map: &DisplaySnapshot,
5190 start_row: u32,
5191 ) -> Range<Point> {
5192 let max_point = display_map.max_point();
5193
5194 let (start_indent, _) = display_map.line_indent(start_row);
5195 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
5196 let mut end = None;
5197 for row in start_row + 1..=max_point.row() {
5198 let (indent, is_blank) = display_map.line_indent(row);
5199 if !is_blank && indent <= start_indent {
5200 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
5201 break;
5202 }
5203 }
5204
5205 let end = end.unwrap_or(max_point);
5206 return start.to_point(display_map)..end.to_point(display_map);
5207 }
5208
5209 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
5210 let selections = self.local_selections::<Point>(cx);
5211 let ranges = selections.into_iter().map(|s| s.start..s.end);
5212 self.fold_ranges(ranges, cx);
5213 }
5214
5215 fn fold_ranges<T: ToOffset>(
5216 &mut self,
5217 ranges: impl IntoIterator<Item = Range<T>>,
5218 cx: &mut ViewContext<Self>,
5219 ) {
5220 let mut ranges = ranges.into_iter().peekable();
5221 if ranges.peek().is_some() {
5222 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
5223 self.request_autoscroll(Autoscroll::Fit, cx);
5224 cx.notify();
5225 }
5226 }
5227
5228 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
5229 if !ranges.is_empty() {
5230 self.display_map
5231 .update(cx, |map, cx| map.unfold(ranges, cx));
5232 self.request_autoscroll(Autoscroll::Fit, cx);
5233 cx.notify();
5234 }
5235 }
5236
5237 pub fn insert_blocks(
5238 &mut self,
5239 blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
5240 cx: &mut ViewContext<Self>,
5241 ) -> Vec<BlockId> {
5242 let blocks = self
5243 .display_map
5244 .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
5245 self.request_autoscroll(Autoscroll::Fit, cx);
5246 blocks
5247 }
5248
5249 pub fn replace_blocks(
5250 &mut self,
5251 blocks: HashMap<BlockId, RenderBlock>,
5252 cx: &mut ViewContext<Self>,
5253 ) {
5254 self.display_map
5255 .update(cx, |display_map, _| display_map.replace_blocks(blocks));
5256 self.request_autoscroll(Autoscroll::Fit, cx);
5257 }
5258
5259 pub fn remove_blocks(&mut self, block_ids: HashSet<BlockId>, cx: &mut ViewContext<Self>) {
5260 self.display_map.update(cx, |display_map, cx| {
5261 display_map.remove_blocks(block_ids, cx)
5262 });
5263 }
5264
5265 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
5266 self.display_map
5267 .update(cx, |map, cx| map.snapshot(cx))
5268 .longest_row()
5269 }
5270
5271 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
5272 self.display_map
5273 .update(cx, |map, cx| map.snapshot(cx))
5274 .max_point()
5275 }
5276
5277 pub fn text(&self, cx: &AppContext) -> String {
5278 self.buffer.read(cx).read(cx).text()
5279 }
5280
5281 pub fn set_text(&mut self, text: impl Into<String>, cx: &mut ViewContext<Self>) {
5282 self.buffer
5283 .read(cx)
5284 .as_singleton()
5285 .expect("you can only call set_text on editors for singleton buffers")
5286 .update(cx, |buffer, cx| buffer.set_text(text, cx));
5287 }
5288
5289 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
5290 self.display_map
5291 .update(cx, |map, cx| map.snapshot(cx))
5292 .text()
5293 }
5294
5295 pub fn soft_wrap_mode(&self, cx: &AppContext) -> SoftWrap {
5296 let language = self.language(cx);
5297 let settings = self.settings.borrow();
5298 let mode = self
5299 .soft_wrap_mode_override
5300 .unwrap_or_else(|| settings.soft_wrap(language));
5301 match mode {
5302 settings::SoftWrap::None => SoftWrap::None,
5303 settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
5304 settings::SoftWrap::PreferredLineLength => {
5305 SoftWrap::Column(settings.preferred_line_length(language))
5306 }
5307 }
5308 }
5309
5310 pub fn set_soft_wrap_mode(&mut self, mode: settings::SoftWrap, cx: &mut ViewContext<Self>) {
5311 self.soft_wrap_mode_override = Some(mode);
5312 cx.notify();
5313 }
5314
5315 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
5316 self.display_map
5317 .update(cx, |map, cx| map.set_wrap_width(width, cx))
5318 }
5319
5320 pub fn highlight_rows(&mut self, rows: Option<Range<u32>>) {
5321 self.highlighted_rows = rows;
5322 }
5323
5324 pub fn highlighted_rows(&self) -> Option<Range<u32>> {
5325 self.highlighted_rows.clone()
5326 }
5327
5328 pub fn highlight_background<T: 'static>(
5329 &mut self,
5330 ranges: Vec<Range<Anchor>>,
5331 color: Color,
5332 cx: &mut ViewContext<Self>,
5333 ) {
5334 self.background_highlights
5335 .insert(TypeId::of::<T>(), (color, ranges));
5336 cx.notify();
5337 }
5338
5339 pub fn clear_background_highlights<T: 'static>(
5340 &mut self,
5341 cx: &mut ViewContext<Self>,
5342 ) -> Option<(Color, Vec<Range<Anchor>>)> {
5343 cx.notify();
5344 self.background_highlights.remove(&TypeId::of::<T>())
5345 }
5346
5347 #[cfg(feature = "test-support")]
5348 pub fn all_background_highlights(
5349 &mut self,
5350 cx: &mut ViewContext<Self>,
5351 ) -> Vec<(Range<DisplayPoint>, Color)> {
5352 let snapshot = self.snapshot(cx);
5353 let buffer = &snapshot.buffer_snapshot;
5354 let start = buffer.anchor_before(0);
5355 let end = buffer.anchor_after(buffer.len());
5356 self.background_highlights_in_range(start..end, &snapshot)
5357 }
5358
5359 pub fn background_highlights_for_type<T: 'static>(&self) -> Option<(Color, &[Range<Anchor>])> {
5360 self.background_highlights
5361 .get(&TypeId::of::<T>())
5362 .map(|(color, ranges)| (*color, ranges.as_slice()))
5363 }
5364
5365 pub fn background_highlights_in_range(
5366 &self,
5367 search_range: Range<Anchor>,
5368 display_snapshot: &DisplaySnapshot,
5369 ) -> Vec<(Range<DisplayPoint>, Color)> {
5370 let mut results = Vec::new();
5371 let buffer = &display_snapshot.buffer_snapshot;
5372 for (color, ranges) in self.background_highlights.values() {
5373 let start_ix = match ranges.binary_search_by(|probe| {
5374 let cmp = probe.end.cmp(&search_range.start, &buffer).unwrap();
5375 if cmp.is_gt() {
5376 Ordering::Greater
5377 } else {
5378 Ordering::Less
5379 }
5380 }) {
5381 Ok(i) | Err(i) => i,
5382 };
5383 for range in &ranges[start_ix..] {
5384 if range.start.cmp(&search_range.end, &buffer).unwrap().is_ge() {
5385 break;
5386 }
5387 let start = range
5388 .start
5389 .to_point(buffer)
5390 .to_display_point(display_snapshot);
5391 let end = range
5392 .end
5393 .to_point(buffer)
5394 .to_display_point(display_snapshot);
5395 results.push((start..end, *color))
5396 }
5397 }
5398 results
5399 }
5400
5401 pub fn highlight_text<T: 'static>(
5402 &mut self,
5403 ranges: Vec<Range<Anchor>>,
5404 style: HighlightStyle,
5405 cx: &mut ViewContext<Self>,
5406 ) {
5407 self.display_map.update(cx, |map, _| {
5408 map.highlight_text(TypeId::of::<T>(), ranges, style)
5409 });
5410 cx.notify();
5411 }
5412
5413 pub fn clear_text_highlights<T: 'static>(
5414 &mut self,
5415 cx: &mut ViewContext<Self>,
5416 ) -> Option<Arc<(HighlightStyle, Vec<Range<Anchor>>)>> {
5417 cx.notify();
5418 self.display_map
5419 .update(cx, |map, _| map.clear_text_highlights(TypeId::of::<T>()))
5420 }
5421
5422 fn next_blink_epoch(&mut self) -> usize {
5423 self.blink_epoch += 1;
5424 self.blink_epoch
5425 }
5426
5427 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
5428 if !self.focused {
5429 return;
5430 }
5431
5432 self.show_local_cursors = true;
5433 cx.notify();
5434
5435 let epoch = self.next_blink_epoch();
5436 cx.spawn(|this, mut cx| {
5437 let this = this.downgrade();
5438 async move {
5439 Timer::after(CURSOR_BLINK_INTERVAL).await;
5440 if let Some(this) = this.upgrade(&cx) {
5441 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
5442 }
5443 }
5444 })
5445 .detach();
5446 }
5447
5448 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
5449 if epoch == self.blink_epoch {
5450 self.blinking_paused = false;
5451 self.blink_cursors(epoch, cx);
5452 }
5453 }
5454
5455 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
5456 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
5457 self.show_local_cursors = !self.show_local_cursors;
5458 cx.notify();
5459
5460 let epoch = self.next_blink_epoch();
5461 cx.spawn(|this, mut cx| {
5462 let this = this.downgrade();
5463 async move {
5464 Timer::after(CURSOR_BLINK_INTERVAL).await;
5465 if let Some(this) = this.upgrade(&cx) {
5466 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
5467 }
5468 }
5469 })
5470 .detach();
5471 }
5472 }
5473
5474 pub fn show_local_cursors(&self) -> bool {
5475 self.show_local_cursors
5476 }
5477
5478 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
5479 cx.notify();
5480 }
5481
5482 fn on_buffer_event(
5483 &mut self,
5484 _: ModelHandle<MultiBuffer>,
5485 event: &language::Event,
5486 cx: &mut ViewContext<Self>,
5487 ) {
5488 match event {
5489 language::Event::Edited => {
5490 self.refresh_active_diagnostics(cx);
5491 self.refresh_code_actions(cx);
5492 cx.emit(Event::Edited);
5493 }
5494 language::Event::Dirtied => cx.emit(Event::Dirtied),
5495 language::Event::Saved => cx.emit(Event::Saved),
5496 language::Event::FileHandleChanged => cx.emit(Event::TitleChanged),
5497 language::Event::Reloaded => cx.emit(Event::TitleChanged),
5498 language::Event::Closed => cx.emit(Event::Closed),
5499 language::Event::DiagnosticsUpdated => {
5500 self.refresh_active_diagnostics(cx);
5501 }
5502 _ => {}
5503 }
5504 }
5505
5506 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
5507 cx.notify();
5508 }
5509
5510 pub fn set_searchable(&mut self, searchable: bool) {
5511 self.searchable = searchable;
5512 }
5513
5514 pub fn searchable(&self) -> bool {
5515 self.searchable
5516 }
5517
5518 fn open_excerpts(workspace: &mut Workspace, _: &OpenExcerpts, cx: &mut ViewContext<Workspace>) {
5519 let active_item = workspace.active_item(cx);
5520 let editor_handle = if let Some(editor) = active_item
5521 .as_ref()
5522 .and_then(|item| item.act_as::<Self>(cx))
5523 {
5524 editor
5525 } else {
5526 cx.propagate_action();
5527 return;
5528 };
5529
5530 let editor = editor_handle.read(cx);
5531 let buffer = editor.buffer.read(cx);
5532 if buffer.is_singleton() {
5533 cx.propagate_action();
5534 return;
5535 }
5536
5537 let mut new_selections_by_buffer = HashMap::default();
5538 for selection in editor.local_selections::<usize>(cx) {
5539 for (buffer, mut range) in
5540 buffer.range_to_buffer_ranges(selection.start..selection.end, cx)
5541 {
5542 if selection.reversed {
5543 mem::swap(&mut range.start, &mut range.end);
5544 }
5545 new_selections_by_buffer
5546 .entry(buffer)
5547 .or_insert(Vec::new())
5548 .push(range)
5549 }
5550 }
5551
5552 editor_handle.update(cx, |editor, cx| {
5553 editor.push_to_nav_history(editor.newest_anchor_selection().head(), None, cx);
5554 });
5555 let nav_history = workspace.active_pane().read(cx).nav_history().clone();
5556 nav_history.borrow_mut().disable();
5557
5558 // We defer the pane interaction because we ourselves are a workspace item
5559 // and activating a new item causes the pane to call a method on us reentrantly,
5560 // which panics if we're on the stack.
5561 cx.defer(move |workspace, cx| {
5562 for (ix, (buffer, ranges)) in new_selections_by_buffer.into_iter().enumerate() {
5563 let buffer = BufferItemHandle(buffer);
5564 if ix == 0 && !workspace.activate_pane_for_item(&buffer, cx) {
5565 workspace.activate_next_pane(cx);
5566 }
5567
5568 let editor = workspace
5569 .open_item(buffer, cx)
5570 .downcast::<Editor>()
5571 .unwrap();
5572
5573 editor.update(cx, |editor, cx| {
5574 editor.select_ranges(ranges, Some(Autoscroll::Newest), cx);
5575 });
5576 }
5577
5578 nav_history.borrow_mut().enable();
5579 });
5580 }
5581}
5582
5583impl EditorSnapshot {
5584 pub fn is_focused(&self) -> bool {
5585 self.is_focused
5586 }
5587
5588 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
5589 self.placeholder_text.as_ref()
5590 }
5591
5592 pub fn scroll_position(&self) -> Vector2F {
5593 compute_scroll_position(
5594 &self.display_snapshot,
5595 self.scroll_position,
5596 &self.scroll_top_anchor,
5597 )
5598 }
5599}
5600
5601impl Deref for EditorSnapshot {
5602 type Target = DisplaySnapshot;
5603
5604 fn deref(&self) -> &Self::Target {
5605 &self.display_snapshot
5606 }
5607}
5608
5609fn compute_scroll_position(
5610 snapshot: &DisplaySnapshot,
5611 mut scroll_position: Vector2F,
5612 scroll_top_anchor: &Option<Anchor>,
5613) -> Vector2F {
5614 if let Some(anchor) = scroll_top_anchor {
5615 let scroll_top = anchor.to_display_point(snapshot).row() as f32;
5616 scroll_position.set_y(scroll_top + scroll_position.y());
5617 } else {
5618 scroll_position.set_y(0.);
5619 }
5620 scroll_position
5621}
5622
5623#[derive(Copy, Clone)]
5624pub enum Event {
5625 Activate,
5626 Edited,
5627 Blurred,
5628 Dirtied,
5629 Saved,
5630 TitleChanged,
5631 SelectionsChanged,
5632 Closed,
5633}
5634
5635impl Entity for Editor {
5636 type Event = Event;
5637}
5638
5639impl View for Editor {
5640 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
5641 let style = self.style(cx);
5642 self.display_map.update(cx, |map, cx| {
5643 map.set_font(style.text.font_id, style.text.font_size, cx)
5644 });
5645 EditorElement::new(self.handle.clone(), style.clone(), self.cursor_shape).boxed()
5646 }
5647
5648 fn ui_name() -> &'static str {
5649 "Editor"
5650 }
5651
5652 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
5653 if let Some(rename) = self.pending_rename.as_ref() {
5654 cx.focus(&rename.editor);
5655 } else {
5656 self.focused = true;
5657 self.blink_cursors(self.blink_epoch, cx);
5658 self.buffer.update(cx, |buffer, cx| {
5659 buffer.finalize_last_transaction(cx);
5660 buffer.set_active_selections(&self.selections, cx)
5661 });
5662 }
5663 }
5664
5665 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
5666 self.focused = false;
5667 self.show_local_cursors = false;
5668 self.buffer
5669 .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
5670 self.hide_context_menu(cx);
5671 cx.emit(Event::Blurred);
5672 cx.notify();
5673 }
5674
5675 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
5676 let mut cx = Self::default_keymap_context();
5677 let mode = match self.mode {
5678 EditorMode::SingleLine => "single_line",
5679 EditorMode::AutoHeight { .. } => "auto_height",
5680 EditorMode::Full => "full",
5681 };
5682 cx.map.insert("mode".into(), mode.into());
5683 if self.pending_rename.is_some() {
5684 cx.set.insert("renaming".into());
5685 }
5686 match self.context_menu.as_ref() {
5687 Some(ContextMenu::Completions(_)) => {
5688 cx.set.insert("showing_completions".into());
5689 }
5690 Some(ContextMenu::CodeActions(_)) => {
5691 cx.set.insert("showing_code_actions".into());
5692 }
5693 None => {}
5694 }
5695 cx
5696 }
5697}
5698
5699fn build_style(
5700 settings: &Settings,
5701 get_field_editor_theme: Option<GetFieldEditorTheme>,
5702 override_text_style: Option<&OverrideTextStyle>,
5703 cx: &AppContext,
5704) -> EditorStyle {
5705 let font_cache = cx.font_cache();
5706
5707 let mut theme = settings.theme.editor.clone();
5708 let mut style = if let Some(get_field_editor_theme) = get_field_editor_theme {
5709 let field_editor_theme = get_field_editor_theme(&settings.theme);
5710 theme.text_color = field_editor_theme.text.color;
5711 theme.selection = field_editor_theme.selection;
5712 EditorStyle {
5713 text: field_editor_theme.text,
5714 placeholder_text: field_editor_theme.placeholder_text,
5715 theme,
5716 }
5717 } else {
5718 let font_family_id = settings.buffer_font_family;
5719 let font_family_name = cx.font_cache().family_name(font_family_id).unwrap();
5720 let font_properties = Default::default();
5721 let font_id = font_cache
5722 .select_font(font_family_id, &font_properties)
5723 .unwrap();
5724 let font_size = settings.buffer_font_size;
5725 EditorStyle {
5726 text: TextStyle {
5727 color: settings.theme.editor.text_color,
5728 font_family_name,
5729 font_family_id,
5730 font_id,
5731 font_size,
5732 font_properties,
5733 underline: None,
5734 },
5735 placeholder_text: None,
5736 theme,
5737 }
5738 };
5739
5740 if let Some(highlight_style) = override_text_style.and_then(|build_style| build_style(&style)) {
5741 if let Some(highlighted) = style
5742 .text
5743 .clone()
5744 .highlight(highlight_style, font_cache)
5745 .log_err()
5746 {
5747 style.text = highlighted;
5748 }
5749 }
5750
5751 style
5752}
5753
5754impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
5755 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
5756 let start = self.start.to_point(buffer);
5757 let end = self.end.to_point(buffer);
5758 if self.reversed {
5759 end..start
5760 } else {
5761 start..end
5762 }
5763 }
5764
5765 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
5766 let start = self.start.to_offset(buffer);
5767 let end = self.end.to_offset(buffer);
5768 if self.reversed {
5769 end..start
5770 } else {
5771 start..end
5772 }
5773 }
5774
5775 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
5776 let start = self
5777 .start
5778 .to_point(&map.buffer_snapshot)
5779 .to_display_point(map);
5780 let end = self
5781 .end
5782 .to_point(&map.buffer_snapshot)
5783 .to_display_point(map);
5784 if self.reversed {
5785 end..start
5786 } else {
5787 start..end
5788 }
5789 }
5790
5791 fn spanned_rows(
5792 &self,
5793 include_end_if_at_line_start: bool,
5794 map: &DisplaySnapshot,
5795 ) -> Range<u32> {
5796 let start = self.start.to_point(&map.buffer_snapshot);
5797 let mut end = self.end.to_point(&map.buffer_snapshot);
5798 if !include_end_if_at_line_start && start.row != end.row && end.column == 0 {
5799 end.row -= 1;
5800 }
5801
5802 let buffer_start = map.prev_line_boundary(start).0;
5803 let buffer_end = map.next_line_boundary(end).0;
5804 buffer_start.row..buffer_end.row + 1
5805 }
5806}
5807
5808impl<T: InvalidationRegion> InvalidationStack<T> {
5809 fn invalidate<S>(&mut self, selections: &[Selection<S>], buffer: &MultiBufferSnapshot)
5810 where
5811 S: Clone + ToOffset,
5812 {
5813 while let Some(region) = self.last() {
5814 let all_selections_inside_invalidation_ranges =
5815 if selections.len() == region.ranges().len() {
5816 selections
5817 .iter()
5818 .zip(region.ranges().iter().map(|r| r.to_offset(&buffer)))
5819 .all(|(selection, invalidation_range)| {
5820 let head = selection.head().to_offset(&buffer);
5821 invalidation_range.start <= head && invalidation_range.end >= head
5822 })
5823 } else {
5824 false
5825 };
5826
5827 if all_selections_inside_invalidation_ranges {
5828 break;
5829 } else {
5830 self.pop();
5831 }
5832 }
5833 }
5834}
5835
5836impl<T> Default for InvalidationStack<T> {
5837 fn default() -> Self {
5838 Self(Default::default())
5839 }
5840}
5841
5842impl<T> Deref for InvalidationStack<T> {
5843 type Target = Vec<T>;
5844
5845 fn deref(&self) -> &Self::Target {
5846 &self.0
5847 }
5848}
5849
5850impl<T> DerefMut for InvalidationStack<T> {
5851 fn deref_mut(&mut self) -> &mut Self::Target {
5852 &mut self.0
5853 }
5854}
5855
5856impl InvalidationRegion for BracketPairState {
5857 fn ranges(&self) -> &[Range<Anchor>] {
5858 &self.ranges
5859 }
5860}
5861
5862impl InvalidationRegion for SnippetState {
5863 fn ranges(&self) -> &[Range<Anchor>] {
5864 &self.ranges[self.active_index]
5865 }
5866}
5867
5868impl Deref for EditorStyle {
5869 type Target = theme::Editor;
5870
5871 fn deref(&self) -> &Self::Target {
5872 &self.theme
5873 }
5874}
5875
5876pub fn diagnostic_block_renderer(
5877 diagnostic: Diagnostic,
5878 is_valid: bool,
5879 settings: watch::Receiver<Settings>,
5880) -> RenderBlock {
5881 let mut highlighted_lines = Vec::new();
5882 for line in diagnostic.message.lines() {
5883 highlighted_lines.push(highlight_diagnostic_message(line));
5884 }
5885
5886 Arc::new(move |cx: &BlockContext| {
5887 let settings = settings.borrow();
5888 let theme = &settings.theme.editor;
5889 let style = diagnostic_style(diagnostic.severity, is_valid, theme);
5890 let font_size = (style.text_scale_factor * settings.buffer_font_size).round();
5891 Flex::column()
5892 .with_children(highlighted_lines.iter().map(|(line, highlights)| {
5893 Label::new(
5894 line.clone(),
5895 style.message.clone().with_font_size(font_size),
5896 )
5897 .with_highlights(highlights.clone())
5898 .contained()
5899 .with_margin_left(cx.anchor_x)
5900 .boxed()
5901 }))
5902 .aligned()
5903 .left()
5904 .boxed()
5905 })
5906}
5907
5908pub fn highlight_diagnostic_message(message: &str) -> (String, Vec<usize>) {
5909 let mut message_without_backticks = String::new();
5910 let mut prev_offset = 0;
5911 let mut inside_block = false;
5912 let mut highlights = Vec::new();
5913 for (match_ix, (offset, _)) in message
5914 .match_indices('`')
5915 .chain([(message.len(), "")])
5916 .enumerate()
5917 {
5918 message_without_backticks.push_str(&message[prev_offset..offset]);
5919 if inside_block {
5920 highlights.extend(prev_offset - match_ix..offset - match_ix);
5921 }
5922
5923 inside_block = !inside_block;
5924 prev_offset = offset + 1;
5925 }
5926
5927 (message_without_backticks, highlights)
5928}
5929
5930pub fn diagnostic_style(
5931 severity: DiagnosticSeverity,
5932 valid: bool,
5933 theme: &theme::Editor,
5934) -> DiagnosticStyle {
5935 match (severity, valid) {
5936 (DiagnosticSeverity::ERROR, true) => theme.error_diagnostic.clone(),
5937 (DiagnosticSeverity::ERROR, false) => theme.invalid_error_diagnostic.clone(),
5938 (DiagnosticSeverity::WARNING, true) => theme.warning_diagnostic.clone(),
5939 (DiagnosticSeverity::WARNING, false) => theme.invalid_warning_diagnostic.clone(),
5940 (DiagnosticSeverity::INFORMATION, true) => theme.information_diagnostic.clone(),
5941 (DiagnosticSeverity::INFORMATION, false) => theme.invalid_information_diagnostic.clone(),
5942 (DiagnosticSeverity::HINT, true) => theme.hint_diagnostic.clone(),
5943 (DiagnosticSeverity::HINT, false) => theme.invalid_hint_diagnostic.clone(),
5944 _ => theme.invalid_hint_diagnostic.clone(),
5945 }
5946}
5947
5948pub fn combine_syntax_and_fuzzy_match_highlights(
5949 text: &str,
5950 default_style: HighlightStyle,
5951 syntax_ranges: impl Iterator<Item = (Range<usize>, HighlightStyle)>,
5952 match_indices: &[usize],
5953) -> Vec<(Range<usize>, HighlightStyle)> {
5954 let mut result = Vec::new();
5955 let mut match_indices = match_indices.iter().copied().peekable();
5956
5957 for (range, mut syntax_highlight) in syntax_ranges.chain([(usize::MAX..0, Default::default())])
5958 {
5959 syntax_highlight.font_properties.weight(Default::default());
5960
5961 // Add highlights for any fuzzy match characters before the next
5962 // syntax highlight range.
5963 while let Some(&match_index) = match_indices.peek() {
5964 if match_index >= range.start {
5965 break;
5966 }
5967 match_indices.next();
5968 let end_index = char_ix_after(match_index, text);
5969 let mut match_style = default_style;
5970 match_style.font_properties.weight(fonts::Weight::BOLD);
5971 result.push((match_index..end_index, match_style));
5972 }
5973
5974 if range.start == usize::MAX {
5975 break;
5976 }
5977
5978 // Add highlights for any fuzzy match characters within the
5979 // syntax highlight range.
5980 let mut offset = range.start;
5981 while let Some(&match_index) = match_indices.peek() {
5982 if match_index >= range.end {
5983 break;
5984 }
5985
5986 match_indices.next();
5987 if match_index > offset {
5988 result.push((offset..match_index, syntax_highlight));
5989 }
5990
5991 let mut end_index = char_ix_after(match_index, text);
5992 while let Some(&next_match_index) = match_indices.peek() {
5993 if next_match_index == end_index && next_match_index < range.end {
5994 end_index = char_ix_after(next_match_index, text);
5995 match_indices.next();
5996 } else {
5997 break;
5998 }
5999 }
6000
6001 let mut match_style = syntax_highlight;
6002 match_style.font_properties.weight(fonts::Weight::BOLD);
6003 result.push((match_index..end_index, match_style));
6004 offset = end_index;
6005 }
6006
6007 if offset < range.end {
6008 result.push((offset..range.end, syntax_highlight));
6009 }
6010 }
6011
6012 fn char_ix_after(ix: usize, text: &str) -> usize {
6013 ix + text[ix..].chars().next().unwrap().len_utf8()
6014 }
6015
6016 result
6017}
6018
6019pub fn styled_runs_for_code_label<'a>(
6020 label: &'a CodeLabel,
6021 default_color: Color,
6022 syntax_theme: &'a theme::SyntaxTheme,
6023) -> impl 'a + Iterator<Item = (Range<usize>, HighlightStyle)> {
6024 const MUTED_OPACITY: usize = 165;
6025
6026 let mut muted_default_style = HighlightStyle {
6027 color: default_color,
6028 ..Default::default()
6029 };
6030 muted_default_style.color.a = ((default_color.a as usize * MUTED_OPACITY) / 255) as u8;
6031
6032 let mut prev_end = label.filter_range.end;
6033 label
6034 .runs
6035 .iter()
6036 .enumerate()
6037 .flat_map(move |(ix, (range, highlight_id))| {
6038 let style = if let Some(style) = highlight_id.style(syntax_theme) {
6039 style
6040 } else {
6041 return Default::default();
6042 };
6043 let mut muted_style = style.clone();
6044 muted_style.color.a = ((style.color.a as usize * MUTED_OPACITY) / 255) as u8;
6045
6046 let mut runs = SmallVec::<[(Range<usize>, HighlightStyle); 3]>::new();
6047 if range.start >= label.filter_range.end {
6048 if range.start > prev_end {
6049 runs.push((prev_end..range.start, muted_default_style));
6050 }
6051 runs.push((range.clone(), muted_style));
6052 } else if range.end <= label.filter_range.end {
6053 runs.push((range.clone(), style));
6054 } else {
6055 runs.push((range.start..label.filter_range.end, style));
6056 runs.push((label.filter_range.end..range.end, muted_style));
6057 }
6058 prev_end = cmp::max(prev_end, range.end);
6059
6060 if ix + 1 == label.runs.len() && label.text.len() > prev_end {
6061 runs.push((prev_end..label.text.len(), muted_default_style));
6062 }
6063
6064 runs
6065 })
6066}
6067
6068#[cfg(test)]
6069mod tests {
6070 use super::*;
6071 use language::{LanguageConfig, LanguageServerConfig};
6072 use lsp::FakeLanguageServer;
6073 use project::FakeFs;
6074 use smol::stream::StreamExt;
6075 use std::{cell::RefCell, rc::Rc, time::Instant};
6076 use text::Point;
6077 use unindent::Unindent;
6078 use util::test::sample_text;
6079
6080 #[gpui::test]
6081 fn test_undo_redo_with_selection_restoration(cx: &mut MutableAppContext) {
6082 let mut now = Instant::now();
6083 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
6084 let group_interval = buffer.read(cx).transaction_group_interval();
6085 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6086 let settings = Settings::test(cx);
6087 let (_, editor) = cx.add_window(Default::default(), |cx| {
6088 build_editor(buffer.clone(), settings, cx)
6089 });
6090
6091 editor.update(cx, |editor, cx| {
6092 editor.start_transaction_at(now, cx);
6093 editor.select_ranges([2..4], None, cx);
6094 editor.insert("cd", cx);
6095 editor.end_transaction_at(now, cx);
6096 assert_eq!(editor.text(cx), "12cd56");
6097 assert_eq!(editor.selected_ranges(cx), vec![4..4]);
6098
6099 editor.start_transaction_at(now, cx);
6100 editor.select_ranges([4..5], None, cx);
6101 editor.insert("e", cx);
6102 editor.end_transaction_at(now, cx);
6103 assert_eq!(editor.text(cx), "12cde6");
6104 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
6105
6106 now += group_interval + Duration::from_millis(1);
6107 editor.select_ranges([2..2], None, cx);
6108
6109 // Simulate an edit in another editor
6110 buffer.update(cx, |buffer, cx| {
6111 buffer.start_transaction_at(now, cx);
6112 buffer.edit([0..1], "a", cx);
6113 buffer.edit([1..1], "b", cx);
6114 buffer.end_transaction_at(now, cx);
6115 });
6116
6117 assert_eq!(editor.text(cx), "ab2cde6");
6118 assert_eq!(editor.selected_ranges(cx), vec![3..3]);
6119
6120 // Last transaction happened past the group interval in a different editor.
6121 // Undo it individually and don't restore selections.
6122 editor.undo(&Undo, cx);
6123 assert_eq!(editor.text(cx), "12cde6");
6124 assert_eq!(editor.selected_ranges(cx), vec![2..2]);
6125
6126 // First two transactions happened within the group interval in this editor.
6127 // Undo them together and restore selections.
6128 editor.undo(&Undo, cx);
6129 editor.undo(&Undo, cx); // Undo stack is empty here, so this is a no-op.
6130 assert_eq!(editor.text(cx), "123456");
6131 assert_eq!(editor.selected_ranges(cx), vec![0..0]);
6132
6133 // Redo the first two transactions together.
6134 editor.redo(&Redo, cx);
6135 assert_eq!(editor.text(cx), "12cde6");
6136 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
6137
6138 // Redo the last transaction on its own.
6139 editor.redo(&Redo, cx);
6140 assert_eq!(editor.text(cx), "ab2cde6");
6141 assert_eq!(editor.selected_ranges(cx), vec![6..6]);
6142
6143 // Test empty transactions.
6144 editor.start_transaction_at(now, cx);
6145 editor.end_transaction_at(now, cx);
6146 editor.undo(&Undo, cx);
6147 assert_eq!(editor.text(cx), "12cde6");
6148 });
6149 }
6150
6151 #[gpui::test]
6152 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
6153 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6154 let settings = Settings::test(cx);
6155 let (_, editor) =
6156 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6157
6158 editor.update(cx, |view, cx| {
6159 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
6160 });
6161
6162 assert_eq!(
6163 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6164 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
6165 );
6166
6167 editor.update(cx, |view, cx| {
6168 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6169 });
6170
6171 assert_eq!(
6172 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6173 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6174 );
6175
6176 editor.update(cx, |view, cx| {
6177 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6178 });
6179
6180 assert_eq!(
6181 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6182 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
6183 );
6184
6185 editor.update(cx, |view, cx| {
6186 view.end_selection(cx);
6187 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6188 });
6189
6190 assert_eq!(
6191 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6192 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
6193 );
6194
6195 editor.update(cx, |view, cx| {
6196 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
6197 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
6198 });
6199
6200 assert_eq!(
6201 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6202 [
6203 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
6204 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
6205 ]
6206 );
6207
6208 editor.update(cx, |view, cx| {
6209 view.end_selection(cx);
6210 });
6211
6212 assert_eq!(
6213 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6214 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
6215 );
6216 }
6217
6218 #[gpui::test]
6219 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
6220 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6221 let settings = Settings::test(cx);
6222 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6223
6224 view.update(cx, |view, cx| {
6225 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
6226 assert_eq!(
6227 view.selected_display_ranges(cx),
6228 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
6229 );
6230 });
6231
6232 view.update(cx, |view, cx| {
6233 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6234 assert_eq!(
6235 view.selected_display_ranges(cx),
6236 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6237 );
6238 });
6239
6240 view.update(cx, |view, cx| {
6241 view.cancel(&Cancel, cx);
6242 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6243 assert_eq!(
6244 view.selected_display_ranges(cx),
6245 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6246 );
6247 });
6248 }
6249
6250 #[gpui::test]
6251 fn test_navigation_history(cx: &mut gpui::MutableAppContext) {
6252 cx.add_window(Default::default(), |cx| {
6253 use workspace::ItemView;
6254 let nav_history = Rc::new(RefCell::new(workspace::NavHistory::default()));
6255 let settings = Settings::test(&cx);
6256 let buffer = MultiBuffer::build_simple(&sample_text(30, 5, 'a'), cx);
6257 let mut editor = build_editor(buffer.clone(), settings, cx);
6258 editor.nav_history = Some(ItemNavHistory::new(nav_history.clone(), &cx.handle()));
6259
6260 // Move the cursor a small distance.
6261 // Nothing is added to the navigation history.
6262 editor.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
6263 editor.select_display_ranges(&[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)], cx);
6264 assert!(nav_history.borrow_mut().pop_backward().is_none());
6265
6266 // Move the cursor a large distance.
6267 // The history can jump back to the previous position.
6268 editor.select_display_ranges(&[DisplayPoint::new(13, 0)..DisplayPoint::new(13, 3)], cx);
6269 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
6270 editor.navigate(nav_entry.data.unwrap(), cx);
6271 assert_eq!(nav_entry.item_view.id(), cx.view_id());
6272 assert_eq!(
6273 editor.selected_display_ranges(cx),
6274 &[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)]
6275 );
6276
6277 // Move the cursor a small distance via the mouse.
6278 // Nothing is added to the navigation history.
6279 editor.begin_selection(DisplayPoint::new(5, 0), false, 1, cx);
6280 editor.end_selection(cx);
6281 assert_eq!(
6282 editor.selected_display_ranges(cx),
6283 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
6284 );
6285 assert!(nav_history.borrow_mut().pop_backward().is_none());
6286
6287 // Move the cursor a large distance via the mouse.
6288 // The history can jump back to the previous position.
6289 editor.begin_selection(DisplayPoint::new(15, 0), false, 1, cx);
6290 editor.end_selection(cx);
6291 assert_eq!(
6292 editor.selected_display_ranges(cx),
6293 &[DisplayPoint::new(15, 0)..DisplayPoint::new(15, 0)]
6294 );
6295 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
6296 editor.navigate(nav_entry.data.unwrap(), cx);
6297 assert_eq!(nav_entry.item_view.id(), cx.view_id());
6298 assert_eq!(
6299 editor.selected_display_ranges(cx),
6300 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
6301 );
6302
6303 editor
6304 });
6305 }
6306
6307 #[gpui::test]
6308 fn test_cancel(cx: &mut gpui::MutableAppContext) {
6309 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6310 let settings = Settings::test(cx);
6311 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6312
6313 view.update(cx, |view, cx| {
6314 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
6315 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6316 view.end_selection(cx);
6317
6318 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
6319 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
6320 view.end_selection(cx);
6321 assert_eq!(
6322 view.selected_display_ranges(cx),
6323 [
6324 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
6325 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
6326 ]
6327 );
6328 });
6329
6330 view.update(cx, |view, cx| {
6331 view.cancel(&Cancel, cx);
6332 assert_eq!(
6333 view.selected_display_ranges(cx),
6334 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
6335 );
6336 });
6337
6338 view.update(cx, |view, cx| {
6339 view.cancel(&Cancel, cx);
6340 assert_eq!(
6341 view.selected_display_ranges(cx),
6342 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
6343 );
6344 });
6345 }
6346
6347 #[gpui::test]
6348 fn test_fold(cx: &mut gpui::MutableAppContext) {
6349 let buffer = MultiBuffer::build_simple(
6350 &"
6351 impl Foo {
6352 // Hello!
6353
6354 fn a() {
6355 1
6356 }
6357
6358 fn b() {
6359 2
6360 }
6361
6362 fn c() {
6363 3
6364 }
6365 }
6366 "
6367 .unindent(),
6368 cx,
6369 );
6370 let settings = Settings::test(&cx);
6371 let (_, view) = cx.add_window(Default::default(), |cx| {
6372 build_editor(buffer.clone(), settings, cx)
6373 });
6374
6375 view.update(cx, |view, cx| {
6376 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx);
6377 view.fold(&Fold, cx);
6378 assert_eq!(
6379 view.display_text(cx),
6380 "
6381 impl Foo {
6382 // Hello!
6383
6384 fn a() {
6385 1
6386 }
6387
6388 fn b() {…
6389 }
6390
6391 fn c() {…
6392 }
6393 }
6394 "
6395 .unindent(),
6396 );
6397
6398 view.fold(&Fold, cx);
6399 assert_eq!(
6400 view.display_text(cx),
6401 "
6402 impl Foo {…
6403 }
6404 "
6405 .unindent(),
6406 );
6407
6408 view.unfold(&Unfold, cx);
6409 assert_eq!(
6410 view.display_text(cx),
6411 "
6412 impl Foo {
6413 // Hello!
6414
6415 fn a() {
6416 1
6417 }
6418
6419 fn b() {…
6420 }
6421
6422 fn c() {…
6423 }
6424 }
6425 "
6426 .unindent(),
6427 );
6428
6429 view.unfold(&Unfold, cx);
6430 assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text());
6431 });
6432 }
6433
6434 #[gpui::test]
6435 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
6436 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
6437 let settings = Settings::test(&cx);
6438 let (_, view) = cx.add_window(Default::default(), |cx| {
6439 build_editor(buffer.clone(), settings, cx)
6440 });
6441
6442 buffer.update(cx, |buffer, cx| {
6443 buffer.edit(
6444 vec![
6445 Point::new(1, 0)..Point::new(1, 0),
6446 Point::new(1, 1)..Point::new(1, 1),
6447 ],
6448 "\t",
6449 cx,
6450 );
6451 });
6452
6453 view.update(cx, |view, cx| {
6454 assert_eq!(
6455 view.selected_display_ranges(cx),
6456 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6457 );
6458
6459 view.move_down(&MoveDown, cx);
6460 assert_eq!(
6461 view.selected_display_ranges(cx),
6462 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6463 );
6464
6465 view.move_right(&MoveRight, cx);
6466 assert_eq!(
6467 view.selected_display_ranges(cx),
6468 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
6469 );
6470
6471 view.move_left(&MoveLeft, cx);
6472 assert_eq!(
6473 view.selected_display_ranges(cx),
6474 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6475 );
6476
6477 view.move_up(&MoveUp, cx);
6478 assert_eq!(
6479 view.selected_display_ranges(cx),
6480 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6481 );
6482
6483 view.move_to_end(&MoveToEnd, cx);
6484 assert_eq!(
6485 view.selected_display_ranges(cx),
6486 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
6487 );
6488
6489 view.move_to_beginning(&MoveToBeginning, cx);
6490 assert_eq!(
6491 view.selected_display_ranges(cx),
6492 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6493 );
6494
6495 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx);
6496 view.select_to_beginning(&SelectToBeginning, cx);
6497 assert_eq!(
6498 view.selected_display_ranges(cx),
6499 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
6500 );
6501
6502 view.select_to_end(&SelectToEnd, cx);
6503 assert_eq!(
6504 view.selected_display_ranges(cx),
6505 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
6506 );
6507 });
6508 }
6509
6510 #[gpui::test]
6511 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
6512 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
6513 let settings = Settings::test(&cx);
6514 let (_, view) = cx.add_window(Default::default(), |cx| {
6515 build_editor(buffer.clone(), settings, cx)
6516 });
6517
6518 assert_eq!('ⓐ'.len_utf8(), 3);
6519 assert_eq!('α'.len_utf8(), 2);
6520
6521 view.update(cx, |view, cx| {
6522 view.fold_ranges(
6523 vec![
6524 Point::new(0, 6)..Point::new(0, 12),
6525 Point::new(1, 2)..Point::new(1, 4),
6526 Point::new(2, 4)..Point::new(2, 8),
6527 ],
6528 cx,
6529 );
6530 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
6531
6532 view.move_right(&MoveRight, cx);
6533 assert_eq!(
6534 view.selected_display_ranges(cx),
6535 &[empty_range(0, "ⓐ".len())]
6536 );
6537 view.move_right(&MoveRight, cx);
6538 assert_eq!(
6539 view.selected_display_ranges(cx),
6540 &[empty_range(0, "ⓐⓑ".len())]
6541 );
6542 view.move_right(&MoveRight, cx);
6543 assert_eq!(
6544 view.selected_display_ranges(cx),
6545 &[empty_range(0, "ⓐⓑ…".len())]
6546 );
6547
6548 view.move_down(&MoveDown, cx);
6549 assert_eq!(
6550 view.selected_display_ranges(cx),
6551 &[empty_range(1, "ab…".len())]
6552 );
6553 view.move_left(&MoveLeft, cx);
6554 assert_eq!(
6555 view.selected_display_ranges(cx),
6556 &[empty_range(1, "ab".len())]
6557 );
6558 view.move_left(&MoveLeft, cx);
6559 assert_eq!(
6560 view.selected_display_ranges(cx),
6561 &[empty_range(1, "a".len())]
6562 );
6563
6564 view.move_down(&MoveDown, cx);
6565 assert_eq!(
6566 view.selected_display_ranges(cx),
6567 &[empty_range(2, "α".len())]
6568 );
6569 view.move_right(&MoveRight, cx);
6570 assert_eq!(
6571 view.selected_display_ranges(cx),
6572 &[empty_range(2, "αβ".len())]
6573 );
6574 view.move_right(&MoveRight, cx);
6575 assert_eq!(
6576 view.selected_display_ranges(cx),
6577 &[empty_range(2, "αβ…".len())]
6578 );
6579 view.move_right(&MoveRight, cx);
6580 assert_eq!(
6581 view.selected_display_ranges(cx),
6582 &[empty_range(2, "αβ…ε".len())]
6583 );
6584
6585 view.move_up(&MoveUp, cx);
6586 assert_eq!(
6587 view.selected_display_ranges(cx),
6588 &[empty_range(1, "ab…e".len())]
6589 );
6590 view.move_up(&MoveUp, cx);
6591 assert_eq!(
6592 view.selected_display_ranges(cx),
6593 &[empty_range(0, "ⓐⓑ…ⓔ".len())]
6594 );
6595 view.move_left(&MoveLeft, cx);
6596 assert_eq!(
6597 view.selected_display_ranges(cx),
6598 &[empty_range(0, "ⓐⓑ…".len())]
6599 );
6600 view.move_left(&MoveLeft, cx);
6601 assert_eq!(
6602 view.selected_display_ranges(cx),
6603 &[empty_range(0, "ⓐⓑ".len())]
6604 );
6605 view.move_left(&MoveLeft, cx);
6606 assert_eq!(
6607 view.selected_display_ranges(cx),
6608 &[empty_range(0, "ⓐ".len())]
6609 );
6610 });
6611 }
6612
6613 #[gpui::test]
6614 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
6615 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
6616 let settings = Settings::test(&cx);
6617 let (_, view) = cx.add_window(Default::default(), |cx| {
6618 build_editor(buffer.clone(), settings, cx)
6619 });
6620 view.update(cx, |view, cx| {
6621 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx);
6622 view.move_down(&MoveDown, cx);
6623 assert_eq!(
6624 view.selected_display_ranges(cx),
6625 &[empty_range(1, "abcd".len())]
6626 );
6627
6628 view.move_down(&MoveDown, cx);
6629 assert_eq!(
6630 view.selected_display_ranges(cx),
6631 &[empty_range(2, "αβγ".len())]
6632 );
6633
6634 view.move_down(&MoveDown, cx);
6635 assert_eq!(
6636 view.selected_display_ranges(cx),
6637 &[empty_range(3, "abcd".len())]
6638 );
6639
6640 view.move_down(&MoveDown, cx);
6641 assert_eq!(
6642 view.selected_display_ranges(cx),
6643 &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
6644 );
6645
6646 view.move_up(&MoveUp, cx);
6647 assert_eq!(
6648 view.selected_display_ranges(cx),
6649 &[empty_range(3, "abcd".len())]
6650 );
6651
6652 view.move_up(&MoveUp, cx);
6653 assert_eq!(
6654 view.selected_display_ranges(cx),
6655 &[empty_range(2, "αβγ".len())]
6656 );
6657 });
6658 }
6659
6660 #[gpui::test]
6661 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
6662 let buffer = MultiBuffer::build_simple("abc\n def", cx);
6663 let settings = Settings::test(&cx);
6664 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6665 view.update(cx, |view, cx| {
6666 view.select_display_ranges(
6667 &[
6668 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6669 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
6670 ],
6671 cx,
6672 );
6673 });
6674
6675 view.update(cx, |view, cx| {
6676 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6677 assert_eq!(
6678 view.selected_display_ranges(cx),
6679 &[
6680 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6681 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6682 ]
6683 );
6684 });
6685
6686 view.update(cx, |view, cx| {
6687 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6688 assert_eq!(
6689 view.selected_display_ranges(cx),
6690 &[
6691 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6692 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6693 ]
6694 );
6695 });
6696
6697 view.update(cx, |view, cx| {
6698 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6699 assert_eq!(
6700 view.selected_display_ranges(cx),
6701 &[
6702 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6703 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6704 ]
6705 );
6706 });
6707
6708 view.update(cx, |view, cx| {
6709 view.move_to_end_of_line(&MoveToEndOfLine, cx);
6710 assert_eq!(
6711 view.selected_display_ranges(cx),
6712 &[
6713 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6714 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6715 ]
6716 );
6717 });
6718
6719 // Moving to the end of line again is a no-op.
6720 view.update(cx, |view, cx| {
6721 view.move_to_end_of_line(&MoveToEndOfLine, cx);
6722 assert_eq!(
6723 view.selected_display_ranges(cx),
6724 &[
6725 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6726 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6727 ]
6728 );
6729 });
6730
6731 view.update(cx, |view, cx| {
6732 view.move_left(&MoveLeft, cx);
6733 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6734 assert_eq!(
6735 view.selected_display_ranges(cx),
6736 &[
6737 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6738 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
6739 ]
6740 );
6741 });
6742
6743 view.update(cx, |view, cx| {
6744 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6745 assert_eq!(
6746 view.selected_display_ranges(cx),
6747 &[
6748 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6749 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
6750 ]
6751 );
6752 });
6753
6754 view.update(cx, |view, cx| {
6755 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6756 assert_eq!(
6757 view.selected_display_ranges(cx),
6758 &[
6759 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6760 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
6761 ]
6762 );
6763 });
6764
6765 view.update(cx, |view, cx| {
6766 view.select_to_end_of_line(&SelectToEndOfLine(true), cx);
6767 assert_eq!(
6768 view.selected_display_ranges(cx),
6769 &[
6770 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
6771 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
6772 ]
6773 );
6774 });
6775
6776 view.update(cx, |view, cx| {
6777 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
6778 assert_eq!(view.display_text(cx), "ab\n de");
6779 assert_eq!(
6780 view.selected_display_ranges(cx),
6781 &[
6782 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6783 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
6784 ]
6785 );
6786 });
6787
6788 view.update(cx, |view, cx| {
6789 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
6790 assert_eq!(view.display_text(cx), "\n");
6791 assert_eq!(
6792 view.selected_display_ranges(cx),
6793 &[
6794 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6795 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6796 ]
6797 );
6798 });
6799 }
6800
6801 #[gpui::test]
6802 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
6803 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
6804 let settings = Settings::test(&cx);
6805 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6806 view.update(cx, |view, cx| {
6807 view.select_display_ranges(
6808 &[
6809 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
6810 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
6811 ],
6812 cx,
6813 );
6814 });
6815
6816 view.update(cx, |view, cx| {
6817 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6818 assert_eq!(
6819 view.selected_display_ranges(cx),
6820 &[
6821 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
6822 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
6823 ]
6824 );
6825 });
6826
6827 view.update(cx, |view, cx| {
6828 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6829 assert_eq!(
6830 view.selected_display_ranges(cx),
6831 &[
6832 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
6833 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2),
6834 ]
6835 );
6836 });
6837
6838 view.update(cx, |view, cx| {
6839 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6840 assert_eq!(
6841 view.selected_display_ranges(cx),
6842 &[
6843 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
6844 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
6845 ]
6846 );
6847 });
6848
6849 view.update(cx, |view, cx| {
6850 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6851 assert_eq!(
6852 view.selected_display_ranges(cx),
6853 &[
6854 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6855 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6856 ]
6857 );
6858 });
6859
6860 view.update(cx, |view, cx| {
6861 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6862 assert_eq!(
6863 view.selected_display_ranges(cx),
6864 &[
6865 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6866 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 23),
6867 ]
6868 );
6869 });
6870
6871 view.update(cx, |view, cx| {
6872 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6873 assert_eq!(
6874 view.selected_display_ranges(cx),
6875 &[
6876 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6877 DisplayPoint::new(0, 24)..DisplayPoint::new(0, 24),
6878 ]
6879 );
6880 });
6881
6882 view.update(cx, |view, cx| {
6883 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6884 assert_eq!(
6885 view.selected_display_ranges(cx),
6886 &[
6887 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
6888 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6889 ]
6890 );
6891 });
6892
6893 view.update(cx, |view, cx| {
6894 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6895 assert_eq!(
6896 view.selected_display_ranges(cx),
6897 &[
6898 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
6899 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
6900 ]
6901 );
6902 });
6903
6904 view.update(cx, |view, cx| {
6905 view.move_right(&MoveRight, cx);
6906 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
6907 assert_eq!(
6908 view.selected_display_ranges(cx),
6909 &[
6910 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
6911 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
6912 ]
6913 );
6914 });
6915
6916 view.update(cx, |view, cx| {
6917 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
6918 assert_eq!(
6919 view.selected_display_ranges(cx),
6920 &[
6921 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 7),
6922 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 2),
6923 ]
6924 );
6925 });
6926
6927 view.update(cx, |view, cx| {
6928 view.select_to_next_word_boundary(&SelectToNextWordBoundary, cx);
6929 assert_eq!(
6930 view.selected_display_ranges(cx),
6931 &[
6932 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
6933 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
6934 ]
6935 );
6936 });
6937 }
6938
6939 #[gpui::test]
6940 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
6941 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
6942 let settings = Settings::test(&cx);
6943 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6944
6945 view.update(cx, |view, cx| {
6946 view.set_wrap_width(Some(140.), cx);
6947 assert_eq!(
6948 view.display_text(cx),
6949 "use one::{\n two::three::\n four::five\n};"
6950 );
6951
6952 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx);
6953
6954 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6955 assert_eq!(
6956 view.selected_display_ranges(cx),
6957 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
6958 );
6959
6960 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6961 assert_eq!(
6962 view.selected_display_ranges(cx),
6963 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
6964 );
6965
6966 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6967 assert_eq!(
6968 view.selected_display_ranges(cx),
6969 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
6970 );
6971
6972 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6973 assert_eq!(
6974 view.selected_display_ranges(cx),
6975 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
6976 );
6977
6978 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6979 assert_eq!(
6980 view.selected_display_ranges(cx),
6981 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
6982 );
6983
6984 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6985 assert_eq!(
6986 view.selected_display_ranges(cx),
6987 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
6988 );
6989 });
6990 }
6991
6992 #[gpui::test]
6993 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
6994 let buffer = MultiBuffer::build_simple("one two three four", cx);
6995 let settings = Settings::test(&cx);
6996 let (_, view) = cx.add_window(Default::default(), |cx| {
6997 build_editor(buffer.clone(), settings, cx)
6998 });
6999
7000 view.update(cx, |view, cx| {
7001 view.select_display_ranges(
7002 &[
7003 // an empty selection - the preceding word fragment is deleted
7004 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7005 // characters selected - they are deleted
7006 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
7007 ],
7008 cx,
7009 );
7010 view.delete_to_previous_word_boundary(&DeleteToPreviousWordBoundary, cx);
7011 });
7012
7013 assert_eq!(buffer.read(cx).read(cx).text(), "e two te four");
7014
7015 view.update(cx, |view, cx| {
7016 view.select_display_ranges(
7017 &[
7018 // an empty selection - the following word fragment is deleted
7019 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7020 // characters selected - they are deleted
7021 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
7022 ],
7023 cx,
7024 );
7025 view.delete_to_next_word_boundary(&DeleteToNextWordBoundary, cx);
7026 });
7027
7028 assert_eq!(buffer.read(cx).read(cx).text(), "e t te our");
7029 }
7030
7031 #[gpui::test]
7032 fn test_newline(cx: &mut gpui::MutableAppContext) {
7033 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
7034 let settings = Settings::test(&cx);
7035 let (_, view) = cx.add_window(Default::default(), |cx| {
7036 build_editor(buffer.clone(), settings, cx)
7037 });
7038
7039 view.update(cx, |view, cx| {
7040 view.select_display_ranges(
7041 &[
7042 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7043 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7044 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
7045 ],
7046 cx,
7047 );
7048
7049 view.newline(&Newline, cx);
7050 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
7051 });
7052 }
7053
7054 #[gpui::test]
7055 fn test_newline_with_old_selections(cx: &mut gpui::MutableAppContext) {
7056 let buffer = MultiBuffer::build_simple(
7057 "
7058 a
7059 b(
7060 X
7061 )
7062 c(
7063 X
7064 )
7065 "
7066 .unindent()
7067 .as_str(),
7068 cx,
7069 );
7070
7071 let settings = Settings::test(&cx);
7072 let (_, editor) = cx.add_window(Default::default(), |cx| {
7073 let mut editor = build_editor(buffer.clone(), settings, cx);
7074 editor.select_ranges(
7075 [
7076 Point::new(2, 4)..Point::new(2, 5),
7077 Point::new(5, 4)..Point::new(5, 5),
7078 ],
7079 None,
7080 cx,
7081 );
7082 editor
7083 });
7084
7085 // Edit the buffer directly, deleting ranges surrounding the editor's selections
7086 buffer.update(cx, |buffer, cx| {
7087 buffer.edit(
7088 [
7089 Point::new(1, 2)..Point::new(3, 0),
7090 Point::new(4, 2)..Point::new(6, 0),
7091 ],
7092 "",
7093 cx,
7094 );
7095 assert_eq!(
7096 buffer.read(cx).text(),
7097 "
7098 a
7099 b()
7100 c()
7101 "
7102 .unindent()
7103 );
7104 });
7105
7106 editor.update(cx, |editor, cx| {
7107 assert_eq!(
7108 editor.selected_ranges(cx),
7109 &[
7110 Point::new(1, 2)..Point::new(1, 2),
7111 Point::new(2, 2)..Point::new(2, 2),
7112 ],
7113 );
7114
7115 editor.newline(&Newline, cx);
7116 assert_eq!(
7117 editor.text(cx),
7118 "
7119 a
7120 b(
7121 )
7122 c(
7123 )
7124 "
7125 .unindent()
7126 );
7127
7128 // The selections are moved after the inserted newlines
7129 assert_eq!(
7130 editor.selected_ranges(cx),
7131 &[
7132 Point::new(2, 0)..Point::new(2, 0),
7133 Point::new(4, 0)..Point::new(4, 0),
7134 ],
7135 );
7136 });
7137 }
7138
7139 #[gpui::test]
7140 fn test_insert_with_old_selections(cx: &mut gpui::MutableAppContext) {
7141 let buffer = MultiBuffer::build_simple("a( X ), b( Y ), c( Z )", cx);
7142
7143 let settings = Settings::test(&cx);
7144 let (_, editor) = cx.add_window(Default::default(), |cx| {
7145 let mut editor = build_editor(buffer.clone(), settings, cx);
7146 editor.select_ranges([3..4, 11..12, 19..20], None, cx);
7147 editor
7148 });
7149
7150 // Edit the buffer directly, deleting ranges surrounding the editor's selections
7151 buffer.update(cx, |buffer, cx| {
7152 buffer.edit([2..5, 10..13, 18..21], "", cx);
7153 assert_eq!(buffer.read(cx).text(), "a(), b(), c()".unindent());
7154 });
7155
7156 editor.update(cx, |editor, cx| {
7157 assert_eq!(editor.selected_ranges(cx), &[2..2, 7..7, 12..12],);
7158
7159 editor.insert("Z", cx);
7160 assert_eq!(editor.text(cx), "a(Z), b(Z), c(Z)");
7161
7162 // The selections are moved after the inserted characters
7163 assert_eq!(editor.selected_ranges(cx), &[3..3, 9..9, 15..15],);
7164 });
7165 }
7166
7167 #[gpui::test]
7168 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
7169 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
7170 let settings = Settings::test(&cx);
7171 let (_, view) = cx.add_window(Default::default(), |cx| {
7172 build_editor(buffer.clone(), settings, cx)
7173 });
7174
7175 view.update(cx, |view, cx| {
7176 // two selections on the same line
7177 view.select_display_ranges(
7178 &[
7179 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
7180 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
7181 ],
7182 cx,
7183 );
7184
7185 // indent from mid-tabstop to full tabstop
7186 view.tab(&Tab, cx);
7187 assert_eq!(view.text(cx), " one two\nthree\n four");
7188 assert_eq!(
7189 view.selected_display_ranges(cx),
7190 &[
7191 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
7192 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
7193 ]
7194 );
7195
7196 // outdent from 1 tabstop to 0 tabstops
7197 view.outdent(&Outdent, cx);
7198 assert_eq!(view.text(cx), "one two\nthree\n four");
7199 assert_eq!(
7200 view.selected_display_ranges(cx),
7201 &[
7202 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
7203 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
7204 ]
7205 );
7206
7207 // select across line ending
7208 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx);
7209
7210 // indent and outdent affect only the preceding line
7211 view.tab(&Tab, cx);
7212 assert_eq!(view.text(cx), "one two\n three\n four");
7213 assert_eq!(
7214 view.selected_display_ranges(cx),
7215 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
7216 );
7217 view.outdent(&Outdent, cx);
7218 assert_eq!(view.text(cx), "one two\nthree\n four");
7219 assert_eq!(
7220 view.selected_display_ranges(cx),
7221 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
7222 );
7223
7224 // Ensure that indenting/outdenting works when the cursor is at column 0.
7225 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
7226 view.tab(&Tab, cx);
7227 assert_eq!(view.text(cx), "one two\n three\n four");
7228 assert_eq!(
7229 view.selected_display_ranges(cx),
7230 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
7231 );
7232
7233 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
7234 view.outdent(&Outdent, cx);
7235 assert_eq!(view.text(cx), "one two\nthree\n four");
7236 assert_eq!(
7237 view.selected_display_ranges(cx),
7238 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
7239 );
7240 });
7241 }
7242
7243 #[gpui::test]
7244 fn test_backspace(cx: &mut gpui::MutableAppContext) {
7245 let settings = Settings::test(&cx);
7246 let (_, view) = cx.add_window(Default::default(), |cx| {
7247 build_editor(MultiBuffer::build_simple("", cx), settings, cx)
7248 });
7249
7250 view.update(cx, |view, cx| {
7251 view.set_text("one two three\nfour five six\nseven eight nine\nten\n", cx);
7252 view.select_display_ranges(
7253 &[
7254 // an empty selection - the preceding character is deleted
7255 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7256 // one character selected - it is deleted
7257 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7258 // a line suffix selected - it is deleted
7259 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
7260 ],
7261 cx,
7262 );
7263 view.backspace(&Backspace, cx);
7264 assert_eq!(view.text(cx), "oe two three\nfou five six\nseven ten\n");
7265
7266 view.set_text(" one\n two\n three\n four", cx);
7267 view.select_display_ranges(
7268 &[
7269 // cursors at the the end of leading indent - last indent is deleted
7270 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
7271 DisplayPoint::new(1, 8)..DisplayPoint::new(1, 8),
7272 // cursors inside leading indent - overlapping indent deletions are coalesced
7273 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
7274 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7275 DisplayPoint::new(2, 6)..DisplayPoint::new(2, 6),
7276 // cursor at the beginning of a line - preceding newline is deleted
7277 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7278 // selection inside leading indent - only the selected character is deleted
7279 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 3),
7280 ],
7281 cx,
7282 );
7283 view.backspace(&Backspace, cx);
7284 assert_eq!(view.text(cx), "one\n two\n three four");
7285 });
7286 }
7287
7288 #[gpui::test]
7289 fn test_delete(cx: &mut gpui::MutableAppContext) {
7290 let buffer =
7291 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
7292 let settings = Settings::test(&cx);
7293 let (_, view) = cx.add_window(Default::default(), |cx| {
7294 build_editor(buffer.clone(), settings, cx)
7295 });
7296
7297 view.update(cx, |view, cx| {
7298 view.select_display_ranges(
7299 &[
7300 // an empty selection - the following character is deleted
7301 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7302 // one character selected - it is deleted
7303 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7304 // a line suffix selected - it is deleted
7305 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
7306 ],
7307 cx,
7308 );
7309 view.delete(&Delete, cx);
7310 });
7311
7312 assert_eq!(
7313 buffer.read(cx).read(cx).text(),
7314 "on two three\nfou five six\nseven ten\n"
7315 );
7316 }
7317
7318 #[gpui::test]
7319 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
7320 let settings = Settings::test(&cx);
7321 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7322 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7323 view.update(cx, |view, cx| {
7324 view.select_display_ranges(
7325 &[
7326 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7327 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
7328 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7329 ],
7330 cx,
7331 );
7332 view.delete_line(&DeleteLine, cx);
7333 assert_eq!(view.display_text(cx), "ghi");
7334 assert_eq!(
7335 view.selected_display_ranges(cx),
7336 vec![
7337 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7338 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
7339 ]
7340 );
7341 });
7342
7343 let settings = Settings::test(&cx);
7344 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7345 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7346 view.update(cx, |view, cx| {
7347 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx);
7348 view.delete_line(&DeleteLine, cx);
7349 assert_eq!(view.display_text(cx), "ghi\n");
7350 assert_eq!(
7351 view.selected_display_ranges(cx),
7352 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
7353 );
7354 });
7355 }
7356
7357 #[gpui::test]
7358 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
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(
7364 &[
7365 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7366 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7367 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7368 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7369 ],
7370 cx,
7371 );
7372 view.duplicate_line(&DuplicateLine, cx);
7373 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
7374 assert_eq!(
7375 view.selected_display_ranges(cx),
7376 vec![
7377 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
7378 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7379 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7380 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
7381 ]
7382 );
7383 });
7384
7385 let settings = Settings::test(&cx);
7386 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7387 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7388 view.update(cx, |view, cx| {
7389 view.select_display_ranges(
7390 &[
7391 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
7392 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
7393 ],
7394 cx,
7395 );
7396 view.duplicate_line(&DuplicateLine, cx);
7397 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
7398 assert_eq!(
7399 view.selected_display_ranges(cx),
7400 vec![
7401 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
7402 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
7403 ]
7404 );
7405 });
7406 }
7407
7408 #[gpui::test]
7409 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
7410 let settings = Settings::test(&cx);
7411 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
7412 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7413 view.update(cx, |view, cx| {
7414 view.fold_ranges(
7415 vec![
7416 Point::new(0, 2)..Point::new(1, 2),
7417 Point::new(2, 3)..Point::new(4, 1),
7418 Point::new(7, 0)..Point::new(8, 4),
7419 ],
7420 cx,
7421 );
7422 view.select_display_ranges(
7423 &[
7424 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7425 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7426 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7427 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
7428 ],
7429 cx,
7430 );
7431 assert_eq!(
7432 view.display_text(cx),
7433 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
7434 );
7435
7436 view.move_line_up(&MoveLineUp, cx);
7437 assert_eq!(
7438 view.display_text(cx),
7439 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
7440 );
7441 assert_eq!(
7442 view.selected_display_ranges(cx),
7443 vec![
7444 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7445 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7446 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
7447 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
7448 ]
7449 );
7450 });
7451
7452 view.update(cx, |view, cx| {
7453 view.move_line_down(&MoveLineDown, cx);
7454 assert_eq!(
7455 view.display_text(cx),
7456 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
7457 );
7458 assert_eq!(
7459 view.selected_display_ranges(cx),
7460 vec![
7461 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7462 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7463 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7464 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
7465 ]
7466 );
7467 });
7468
7469 view.update(cx, |view, cx| {
7470 view.move_line_down(&MoveLineDown, cx);
7471 assert_eq!(
7472 view.display_text(cx),
7473 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
7474 );
7475 assert_eq!(
7476 view.selected_display_ranges(cx),
7477 vec![
7478 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7479 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7480 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7481 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
7482 ]
7483 );
7484 });
7485
7486 view.update(cx, |view, cx| {
7487 view.move_line_up(&MoveLineUp, cx);
7488 assert_eq!(
7489 view.display_text(cx),
7490 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
7491 );
7492 assert_eq!(
7493 view.selected_display_ranges(cx),
7494 vec![
7495 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7496 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7497 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
7498 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
7499 ]
7500 );
7501 });
7502 }
7503
7504 #[gpui::test]
7505 fn test_move_line_up_down_with_blocks(cx: &mut gpui::MutableAppContext) {
7506 let settings = Settings::test(&cx);
7507 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
7508 let snapshot = buffer.read(cx).snapshot(cx);
7509 let (_, editor) =
7510 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7511 editor.update(cx, |editor, cx| {
7512 editor.insert_blocks(
7513 [BlockProperties {
7514 position: snapshot.anchor_after(Point::new(2, 0)),
7515 disposition: BlockDisposition::Below,
7516 height: 1,
7517 render: Arc::new(|_| Empty::new().boxed()),
7518 }],
7519 cx,
7520 );
7521 editor.select_ranges([Point::new(2, 0)..Point::new(2, 0)], None, cx);
7522 editor.move_line_down(&MoveLineDown, cx);
7523 });
7524 }
7525
7526 #[gpui::test]
7527 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
7528 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
7529 let settings = Settings::test(&cx);
7530 let view = cx
7531 .add_window(Default::default(), |cx| {
7532 build_editor(buffer.clone(), settings, cx)
7533 })
7534 .1;
7535
7536 // Cut with three selections. Clipboard text is divided into three slices.
7537 view.update(cx, |view, cx| {
7538 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
7539 view.cut(&Cut, cx);
7540 assert_eq!(view.display_text(cx), "two four six ");
7541 });
7542
7543 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
7544 view.update(cx, |view, cx| {
7545 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
7546 view.paste(&Paste, cx);
7547 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
7548 assert_eq!(
7549 view.selected_display_ranges(cx),
7550 &[
7551 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
7552 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
7553 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
7554 ]
7555 );
7556 });
7557
7558 // Paste again but with only two cursors. Since the number of cursors doesn't
7559 // match the number of slices in the clipboard, the entire clipboard text
7560 // is pasted at each cursor.
7561 view.update(cx, |view, cx| {
7562 view.select_ranges(vec![0..0, 31..31], None, cx);
7563 view.handle_input(&Input("( ".into()), cx);
7564 view.paste(&Paste, cx);
7565 view.handle_input(&Input(") ".into()), cx);
7566 assert_eq!(
7567 view.display_text(cx),
7568 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7569 );
7570 });
7571
7572 view.update(cx, |view, cx| {
7573 view.select_ranges(vec![0..0], None, cx);
7574 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
7575 assert_eq!(
7576 view.display_text(cx),
7577 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7578 );
7579 });
7580
7581 // Cut with three selections, one of which is full-line.
7582 view.update(cx, |view, cx| {
7583 view.select_display_ranges(
7584 &[
7585 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
7586 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7587 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
7588 ],
7589 cx,
7590 );
7591 view.cut(&Cut, cx);
7592 assert_eq!(
7593 view.display_text(cx),
7594 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7595 );
7596 });
7597
7598 // Paste with three selections, noticing how the copied selection that was full-line
7599 // gets inserted before the second cursor.
7600 view.update(cx, |view, cx| {
7601 view.select_display_ranges(
7602 &[
7603 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7604 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7605 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
7606 ],
7607 cx,
7608 );
7609 view.paste(&Paste, cx);
7610 assert_eq!(
7611 view.display_text(cx),
7612 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
7613 );
7614 assert_eq!(
7615 view.selected_display_ranges(cx),
7616 &[
7617 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7618 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7619 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
7620 ]
7621 );
7622 });
7623
7624 // Copy with a single cursor only, which writes the whole line into the clipboard.
7625 view.update(cx, |view, cx| {
7626 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx);
7627 view.copy(&Copy, cx);
7628 });
7629
7630 // Paste with three selections, noticing how the copied full-line selection is inserted
7631 // before the empty selections but replaces the selection that is non-empty.
7632 view.update(cx, |view, cx| {
7633 view.select_display_ranges(
7634 &[
7635 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7636 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
7637 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7638 ],
7639 cx,
7640 );
7641 view.paste(&Paste, cx);
7642 assert_eq!(
7643 view.display_text(cx),
7644 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
7645 );
7646 assert_eq!(
7647 view.selected_display_ranges(cx),
7648 &[
7649 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7650 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7651 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
7652 ]
7653 );
7654 });
7655 }
7656
7657 #[gpui::test]
7658 fn test_select_all(cx: &mut gpui::MutableAppContext) {
7659 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
7660 let settings = Settings::test(&cx);
7661 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7662 view.update(cx, |view, cx| {
7663 view.select_all(&SelectAll, cx);
7664 assert_eq!(
7665 view.selected_display_ranges(cx),
7666 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
7667 );
7668 });
7669 }
7670
7671 #[gpui::test]
7672 fn test_select_line(cx: &mut gpui::MutableAppContext) {
7673 let settings = Settings::test(&cx);
7674 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
7675 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7676 view.update(cx, |view, cx| {
7677 view.select_display_ranges(
7678 &[
7679 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7680 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7681 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7682 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
7683 ],
7684 cx,
7685 );
7686 view.select_line(&SelectLine, cx);
7687 assert_eq!(
7688 view.selected_display_ranges(cx),
7689 vec![
7690 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
7691 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
7692 ]
7693 );
7694 });
7695
7696 view.update(cx, |view, cx| {
7697 view.select_line(&SelectLine, cx);
7698 assert_eq!(
7699 view.selected_display_ranges(cx),
7700 vec![
7701 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
7702 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
7703 ]
7704 );
7705 });
7706
7707 view.update(cx, |view, cx| {
7708 view.select_line(&SelectLine, cx);
7709 assert_eq!(
7710 view.selected_display_ranges(cx),
7711 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
7712 );
7713 });
7714 }
7715
7716 #[gpui::test]
7717 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
7718 let settings = Settings::test(&cx);
7719 let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
7720 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7721 view.update(cx, |view, cx| {
7722 view.fold_ranges(
7723 vec![
7724 Point::new(0, 2)..Point::new(1, 2),
7725 Point::new(2, 3)..Point::new(4, 1),
7726 Point::new(7, 0)..Point::new(8, 4),
7727 ],
7728 cx,
7729 );
7730 view.select_display_ranges(
7731 &[
7732 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7733 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7734 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7735 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
7736 ],
7737 cx,
7738 );
7739 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
7740 });
7741
7742 view.update(cx, |view, cx| {
7743 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
7744 assert_eq!(
7745 view.display_text(cx),
7746 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
7747 );
7748 assert_eq!(
7749 view.selected_display_ranges(cx),
7750 [
7751 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7752 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7753 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
7754 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
7755 ]
7756 );
7757 });
7758
7759 view.update(cx, |view, cx| {
7760 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx);
7761 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
7762 assert_eq!(
7763 view.display_text(cx),
7764 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
7765 );
7766 assert_eq!(
7767 view.selected_display_ranges(cx),
7768 [
7769 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
7770 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
7771 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7772 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
7773 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
7774 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
7775 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
7776 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
7777 ]
7778 );
7779 });
7780 }
7781
7782 #[gpui::test]
7783 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
7784 let settings = Settings::test(&cx);
7785 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
7786 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7787
7788 view.update(cx, |view, cx| {
7789 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx);
7790 });
7791 view.update(cx, |view, cx| {
7792 view.add_selection_above(&AddSelectionAbove, cx);
7793 assert_eq!(
7794 view.selected_display_ranges(cx),
7795 vec![
7796 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7797 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
7798 ]
7799 );
7800 });
7801
7802 view.update(cx, |view, cx| {
7803 view.add_selection_above(&AddSelectionAbove, cx);
7804 assert_eq!(
7805 view.selected_display_ranges(cx),
7806 vec![
7807 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7808 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
7809 ]
7810 );
7811 });
7812
7813 view.update(cx, |view, cx| {
7814 view.add_selection_below(&AddSelectionBelow, cx);
7815 assert_eq!(
7816 view.selected_display_ranges(cx),
7817 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
7818 );
7819 });
7820
7821 view.update(cx, |view, cx| {
7822 view.add_selection_below(&AddSelectionBelow, cx);
7823 assert_eq!(
7824 view.selected_display_ranges(cx),
7825 vec![
7826 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7827 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
7828 ]
7829 );
7830 });
7831
7832 view.update(cx, |view, cx| {
7833 view.add_selection_below(&AddSelectionBelow, cx);
7834 assert_eq!(
7835 view.selected_display_ranges(cx),
7836 vec![
7837 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7838 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
7839 ]
7840 );
7841 });
7842
7843 view.update(cx, |view, cx| {
7844 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx);
7845 });
7846 view.update(cx, |view, cx| {
7847 view.add_selection_below(&AddSelectionBelow, cx);
7848 assert_eq!(
7849 view.selected_display_ranges(cx),
7850 vec![
7851 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7852 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
7853 ]
7854 );
7855 });
7856
7857 view.update(cx, |view, cx| {
7858 view.add_selection_below(&AddSelectionBelow, cx);
7859 assert_eq!(
7860 view.selected_display_ranges(cx),
7861 vec![
7862 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7863 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
7864 ]
7865 );
7866 });
7867
7868 view.update(cx, |view, cx| {
7869 view.add_selection_above(&AddSelectionAbove, cx);
7870 assert_eq!(
7871 view.selected_display_ranges(cx),
7872 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
7873 );
7874 });
7875
7876 view.update(cx, |view, cx| {
7877 view.add_selection_above(&AddSelectionAbove, cx);
7878 assert_eq!(
7879 view.selected_display_ranges(cx),
7880 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
7881 );
7882 });
7883
7884 view.update(cx, |view, cx| {
7885 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx);
7886 view.add_selection_below(&AddSelectionBelow, cx);
7887 assert_eq!(
7888 view.selected_display_ranges(cx),
7889 vec![
7890 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7891 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7892 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7893 ]
7894 );
7895 });
7896
7897 view.update(cx, |view, cx| {
7898 view.add_selection_below(&AddSelectionBelow, cx);
7899 assert_eq!(
7900 view.selected_display_ranges(cx),
7901 vec![
7902 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7903 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7904 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7905 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
7906 ]
7907 );
7908 });
7909
7910 view.update(cx, |view, cx| {
7911 view.add_selection_above(&AddSelectionAbove, cx);
7912 assert_eq!(
7913 view.selected_display_ranges(cx),
7914 vec![
7915 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7916 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7917 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7918 ]
7919 );
7920 });
7921
7922 view.update(cx, |view, cx| {
7923 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx);
7924 });
7925 view.update(cx, |view, cx| {
7926 view.add_selection_above(&AddSelectionAbove, cx);
7927 assert_eq!(
7928 view.selected_display_ranges(cx),
7929 vec![
7930 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
7931 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
7932 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
7933 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
7934 ]
7935 );
7936 });
7937
7938 view.update(cx, |view, cx| {
7939 view.add_selection_below(&AddSelectionBelow, cx);
7940 assert_eq!(
7941 view.selected_display_ranges(cx),
7942 vec![
7943 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
7944 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
7945 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
7946 ]
7947 );
7948 });
7949 }
7950
7951 #[gpui::test]
7952 async fn test_select_larger_smaller_syntax_node(cx: &mut gpui::TestAppContext) {
7953 let settings = cx.read(Settings::test);
7954 let language = Arc::new(Language::new(
7955 LanguageConfig::default(),
7956 Some(tree_sitter_rust::language()),
7957 ));
7958
7959 let text = r#"
7960 use mod1::mod2::{mod3, mod4};
7961
7962 fn fn_1(param1: bool, param2: &str) {
7963 let var1 = "text";
7964 }
7965 "#
7966 .unindent();
7967
7968 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7969 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7970 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7971 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
7972 .await;
7973
7974 view.update(cx, |view, cx| {
7975 view.select_display_ranges(
7976 &[
7977 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7978 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7979 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7980 ],
7981 cx,
7982 );
7983 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7984 });
7985 assert_eq!(
7986 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7987 &[
7988 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
7989 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7990 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
7991 ]
7992 );
7993
7994 view.update(cx, |view, cx| {
7995 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7996 });
7997 assert_eq!(
7998 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7999 &[
8000 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
8001 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
8002 ]
8003 );
8004
8005 view.update(cx, |view, cx| {
8006 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8007 });
8008 assert_eq!(
8009 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8010 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
8011 );
8012
8013 // Trying to expand the selected syntax node one more time has no effect.
8014 view.update(cx, |view, cx| {
8015 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8016 });
8017 assert_eq!(
8018 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8019 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
8020 );
8021
8022 view.update(cx, |view, cx| {
8023 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8024 });
8025 assert_eq!(
8026 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8027 &[
8028 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
8029 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
8030 ]
8031 );
8032
8033 view.update(cx, |view, cx| {
8034 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8035 });
8036 assert_eq!(
8037 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8038 &[
8039 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
8040 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
8041 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
8042 ]
8043 );
8044
8045 view.update(cx, |view, cx| {
8046 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8047 });
8048 assert_eq!(
8049 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8050 &[
8051 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
8052 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
8053 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
8054 ]
8055 );
8056
8057 // Trying to shrink the selected syntax node one more time has no effect.
8058 view.update(cx, |view, cx| {
8059 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8060 });
8061 assert_eq!(
8062 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8063 &[
8064 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
8065 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
8066 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
8067 ]
8068 );
8069
8070 // Ensure that we keep expanding the selection if the larger selection starts or ends within
8071 // a fold.
8072 view.update(cx, |view, cx| {
8073 view.fold_ranges(
8074 vec![
8075 Point::new(0, 21)..Point::new(0, 24),
8076 Point::new(3, 20)..Point::new(3, 22),
8077 ],
8078 cx,
8079 );
8080 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8081 });
8082 assert_eq!(
8083 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8084 &[
8085 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
8086 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
8087 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
8088 ]
8089 );
8090 }
8091
8092 #[gpui::test]
8093 async fn test_autoindent_selections(cx: &mut gpui::TestAppContext) {
8094 let settings = cx.read(Settings::test);
8095 let language = Arc::new(
8096 Language::new(
8097 LanguageConfig {
8098 brackets: vec![
8099 BracketPair {
8100 start: "{".to_string(),
8101 end: "}".to_string(),
8102 close: false,
8103 newline: true,
8104 },
8105 BracketPair {
8106 start: "(".to_string(),
8107 end: ")".to_string(),
8108 close: false,
8109 newline: true,
8110 },
8111 ],
8112 ..Default::default()
8113 },
8114 Some(tree_sitter_rust::language()),
8115 )
8116 .with_indents_query(
8117 r#"
8118 (_ "(" ")" @end) @indent
8119 (_ "{" "}" @end) @indent
8120 "#,
8121 )
8122 .unwrap(),
8123 );
8124
8125 let text = "fn a() {}";
8126
8127 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8128 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8129 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8130 editor
8131 .condition(&cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
8132 .await;
8133
8134 editor.update(cx, |editor, cx| {
8135 editor.select_ranges([5..5, 8..8, 9..9], None, cx);
8136 editor.newline(&Newline, cx);
8137 assert_eq!(editor.text(cx), "fn a(\n \n) {\n \n}\n");
8138 assert_eq!(
8139 editor.selected_ranges(cx),
8140 &[
8141 Point::new(1, 4)..Point::new(1, 4),
8142 Point::new(3, 4)..Point::new(3, 4),
8143 Point::new(5, 0)..Point::new(5, 0)
8144 ]
8145 );
8146 });
8147 }
8148
8149 #[gpui::test]
8150 async fn test_autoclose_pairs(cx: &mut gpui::TestAppContext) {
8151 let settings = cx.read(Settings::test);
8152 let language = Arc::new(Language::new(
8153 LanguageConfig {
8154 brackets: vec![
8155 BracketPair {
8156 start: "{".to_string(),
8157 end: "}".to_string(),
8158 close: true,
8159 newline: true,
8160 },
8161 BracketPair {
8162 start: "/*".to_string(),
8163 end: " */".to_string(),
8164 close: true,
8165 newline: true,
8166 },
8167 ],
8168 ..Default::default()
8169 },
8170 Some(tree_sitter_rust::language()),
8171 ));
8172
8173 let text = r#"
8174 a
8175
8176 /
8177
8178 "#
8179 .unindent();
8180
8181 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8182 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8183 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8184 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
8185 .await;
8186
8187 view.update(cx, |view, cx| {
8188 view.select_display_ranges(
8189 &[
8190 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
8191 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
8192 ],
8193 cx,
8194 );
8195 view.handle_input(&Input("{".to_string()), cx);
8196 view.handle_input(&Input("{".to_string()), cx);
8197 view.handle_input(&Input("{".to_string()), cx);
8198 assert_eq!(
8199 view.text(cx),
8200 "
8201 {{{}}}
8202 {{{}}}
8203 /
8204
8205 "
8206 .unindent()
8207 );
8208
8209 view.move_right(&MoveRight, cx);
8210 view.handle_input(&Input("}".to_string()), cx);
8211 view.handle_input(&Input("}".to_string()), cx);
8212 view.handle_input(&Input("}".to_string()), cx);
8213 assert_eq!(
8214 view.text(cx),
8215 "
8216 {{{}}}}
8217 {{{}}}}
8218 /
8219
8220 "
8221 .unindent()
8222 );
8223
8224 view.undo(&Undo, cx);
8225 view.handle_input(&Input("/".to_string()), cx);
8226 view.handle_input(&Input("*".to_string()), cx);
8227 assert_eq!(
8228 view.text(cx),
8229 "
8230 /* */
8231 /* */
8232 /
8233
8234 "
8235 .unindent()
8236 );
8237
8238 view.undo(&Undo, cx);
8239 view.select_display_ranges(
8240 &[
8241 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
8242 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
8243 ],
8244 cx,
8245 );
8246 view.handle_input(&Input("*".to_string()), cx);
8247 assert_eq!(
8248 view.text(cx),
8249 "
8250 a
8251
8252 /*
8253 *
8254 "
8255 .unindent()
8256 );
8257
8258 view.finalize_last_transaction(cx);
8259 view.select_display_ranges(&[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)], cx);
8260 view.handle_input(&Input("{".to_string()), cx);
8261 assert_eq!(
8262 view.text(cx),
8263 "
8264 {a
8265
8266 /*
8267 *
8268 "
8269 .unindent()
8270 );
8271
8272 view.undo(&Undo, cx);
8273 view.select_display_ranges(&[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1)], cx);
8274 view.handle_input(&Input("{".to_string()), cx);
8275 assert_eq!(
8276 view.text(cx),
8277 "
8278 {a}
8279
8280 /*
8281 *
8282 "
8283 .unindent()
8284 );
8285 assert_eq!(
8286 view.selected_display_ranges(cx),
8287 [DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)]
8288 );
8289 });
8290 }
8291
8292 #[gpui::test]
8293 async fn test_snippets(cx: &mut gpui::TestAppContext) {
8294 let settings = cx.read(Settings::test);
8295
8296 let text = "
8297 a. b
8298 a. b
8299 a. b
8300 "
8301 .unindent();
8302 let buffer = cx.update(|cx| MultiBuffer::build_simple(&text, cx));
8303 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8304
8305 editor.update(cx, |editor, cx| {
8306 let buffer = &editor.snapshot(cx).buffer_snapshot;
8307 let snippet = Snippet::parse("f(${1:one}, ${2:two}, ${1:three})$0").unwrap();
8308 let insertion_ranges = [
8309 Point::new(0, 2).to_offset(buffer)..Point::new(0, 2).to_offset(buffer),
8310 Point::new(1, 2).to_offset(buffer)..Point::new(1, 2).to_offset(buffer),
8311 Point::new(2, 2).to_offset(buffer)..Point::new(2, 2).to_offset(buffer),
8312 ];
8313
8314 editor
8315 .insert_snippet(&insertion_ranges, snippet, cx)
8316 .unwrap();
8317 assert_eq!(
8318 editor.text(cx),
8319 "
8320 a.f(one, two, three) b
8321 a.f(one, two, three) b
8322 a.f(one, two, three) b
8323 "
8324 .unindent()
8325 );
8326 assert_eq!(
8327 editor.selected_ranges::<Point>(cx),
8328 &[
8329 Point::new(0, 4)..Point::new(0, 7),
8330 Point::new(0, 14)..Point::new(0, 19),
8331 Point::new(1, 4)..Point::new(1, 7),
8332 Point::new(1, 14)..Point::new(1, 19),
8333 Point::new(2, 4)..Point::new(2, 7),
8334 Point::new(2, 14)..Point::new(2, 19),
8335 ]
8336 );
8337
8338 // Can't move earlier than the first tab stop
8339 editor.move_to_prev_snippet_tabstop(cx);
8340 assert_eq!(
8341 editor.selected_ranges::<Point>(cx),
8342 &[
8343 Point::new(0, 4)..Point::new(0, 7),
8344 Point::new(0, 14)..Point::new(0, 19),
8345 Point::new(1, 4)..Point::new(1, 7),
8346 Point::new(1, 14)..Point::new(1, 19),
8347 Point::new(2, 4)..Point::new(2, 7),
8348 Point::new(2, 14)..Point::new(2, 19),
8349 ]
8350 );
8351
8352 assert!(editor.move_to_next_snippet_tabstop(cx));
8353 assert_eq!(
8354 editor.selected_ranges::<Point>(cx),
8355 &[
8356 Point::new(0, 9)..Point::new(0, 12),
8357 Point::new(1, 9)..Point::new(1, 12),
8358 Point::new(2, 9)..Point::new(2, 12)
8359 ]
8360 );
8361
8362 editor.move_to_prev_snippet_tabstop(cx);
8363 assert_eq!(
8364 editor.selected_ranges::<Point>(cx),
8365 &[
8366 Point::new(0, 4)..Point::new(0, 7),
8367 Point::new(0, 14)..Point::new(0, 19),
8368 Point::new(1, 4)..Point::new(1, 7),
8369 Point::new(1, 14)..Point::new(1, 19),
8370 Point::new(2, 4)..Point::new(2, 7),
8371 Point::new(2, 14)..Point::new(2, 19),
8372 ]
8373 );
8374
8375 assert!(editor.move_to_next_snippet_tabstop(cx));
8376 assert!(editor.move_to_next_snippet_tabstop(cx));
8377 assert_eq!(
8378 editor.selected_ranges::<Point>(cx),
8379 &[
8380 Point::new(0, 20)..Point::new(0, 20),
8381 Point::new(1, 20)..Point::new(1, 20),
8382 Point::new(2, 20)..Point::new(2, 20)
8383 ]
8384 );
8385
8386 // As soon as the last tab stop is reached, snippet state is gone
8387 editor.move_to_prev_snippet_tabstop(cx);
8388 assert_eq!(
8389 editor.selected_ranges::<Point>(cx),
8390 &[
8391 Point::new(0, 20)..Point::new(0, 20),
8392 Point::new(1, 20)..Point::new(1, 20),
8393 Point::new(2, 20)..Point::new(2, 20)
8394 ]
8395 );
8396 });
8397 }
8398
8399 #[gpui::test]
8400 async fn test_completion(cx: &mut gpui::TestAppContext) {
8401 let settings = cx.read(Settings::test);
8402
8403 let (mut language_server_config, mut fake_servers) = LanguageServerConfig::fake();
8404 language_server_config.set_fake_capabilities(lsp::ServerCapabilities {
8405 completion_provider: Some(lsp::CompletionOptions {
8406 trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
8407 ..Default::default()
8408 }),
8409 ..Default::default()
8410 });
8411 let language = Arc::new(Language::new(
8412 LanguageConfig {
8413 name: "Rust".into(),
8414 path_suffixes: vec!["rs".to_string()],
8415 language_server: Some(language_server_config),
8416 ..Default::default()
8417 },
8418 Some(tree_sitter_rust::language()),
8419 ));
8420
8421 let text = "
8422 one
8423 two
8424 three
8425 "
8426 .unindent();
8427
8428 let fs = FakeFs::new(cx.background().clone());
8429 fs.insert_file("/file.rs", text).await;
8430
8431 let project = Project::test(fs, cx);
8432 project.update(cx, |project, _| project.languages().add(language));
8433
8434 let worktree_id = project
8435 .update(cx, |project, cx| {
8436 project.find_or_create_local_worktree("/file.rs", true, cx)
8437 })
8438 .await
8439 .unwrap()
8440 .0
8441 .read_with(cx, |tree, _| tree.id());
8442 let buffer = project
8443 .update(cx, |project, cx| project.open_buffer((worktree_id, ""), cx))
8444 .await
8445 .unwrap();
8446 let mut fake_server = fake_servers.next().await.unwrap();
8447
8448 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8449 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8450
8451 editor.update(cx, |editor, cx| {
8452 editor.project = Some(project);
8453 editor.select_ranges([Point::new(0, 3)..Point::new(0, 3)], None, cx);
8454 editor.handle_input(&Input(".".to_string()), cx);
8455 });
8456
8457 handle_completion_request(
8458 &mut fake_server,
8459 "/file.rs",
8460 Point::new(0, 4),
8461 vec![
8462 (Point::new(0, 4)..Point::new(0, 4), "first_completion"),
8463 (Point::new(0, 4)..Point::new(0, 4), "second_completion"),
8464 ],
8465 )
8466 .await;
8467 editor
8468 .condition(&cx, |editor, _| editor.context_menu_visible())
8469 .await;
8470
8471 let apply_additional_edits = editor.update(cx, |editor, cx| {
8472 editor.move_down(&MoveDown, cx);
8473 let apply_additional_edits = editor
8474 .confirm_completion(&ConfirmCompletion(None), cx)
8475 .unwrap();
8476 assert_eq!(
8477 editor.text(cx),
8478 "
8479 one.second_completion
8480 two
8481 three
8482 "
8483 .unindent()
8484 );
8485 apply_additional_edits
8486 });
8487
8488 handle_resolve_completion_request(
8489 &mut fake_server,
8490 Some((Point::new(2, 5)..Point::new(2, 5), "\nadditional edit")),
8491 )
8492 .await;
8493 apply_additional_edits.await.unwrap();
8494 assert_eq!(
8495 editor.read_with(cx, |editor, cx| editor.text(cx)),
8496 "
8497 one.second_completion
8498 two
8499 three
8500 additional edit
8501 "
8502 .unindent()
8503 );
8504
8505 editor.update(cx, |editor, cx| {
8506 editor.select_ranges(
8507 [
8508 Point::new(1, 3)..Point::new(1, 3),
8509 Point::new(2, 5)..Point::new(2, 5),
8510 ],
8511 None,
8512 cx,
8513 );
8514
8515 editor.handle_input(&Input(" ".to_string()), cx);
8516 assert!(editor.context_menu.is_none());
8517 editor.handle_input(&Input("s".to_string()), cx);
8518 assert!(editor.context_menu.is_none());
8519 });
8520
8521 handle_completion_request(
8522 &mut fake_server,
8523 "/file.rs",
8524 Point::new(2, 7),
8525 vec![
8526 (Point::new(2, 6)..Point::new(2, 7), "fourth_completion"),
8527 (Point::new(2, 6)..Point::new(2, 7), "fifth_completion"),
8528 (Point::new(2, 6)..Point::new(2, 7), "sixth_completion"),
8529 ],
8530 )
8531 .await;
8532 editor
8533 .condition(&cx, |editor, _| editor.context_menu_visible())
8534 .await;
8535
8536 editor.update(cx, |editor, cx| {
8537 editor.handle_input(&Input("i".to_string()), cx);
8538 });
8539
8540 handle_completion_request(
8541 &mut fake_server,
8542 "/file.rs",
8543 Point::new(2, 8),
8544 vec![
8545 (Point::new(2, 6)..Point::new(2, 8), "fourth_completion"),
8546 (Point::new(2, 6)..Point::new(2, 8), "fifth_completion"),
8547 (Point::new(2, 6)..Point::new(2, 8), "sixth_completion"),
8548 ],
8549 )
8550 .await;
8551 editor
8552 .condition(&cx, |editor, _| editor.context_menu_visible())
8553 .await;
8554
8555 let apply_additional_edits = editor.update(cx, |editor, cx| {
8556 let apply_additional_edits = editor
8557 .confirm_completion(&ConfirmCompletion(None), cx)
8558 .unwrap();
8559 assert_eq!(
8560 editor.text(cx),
8561 "
8562 one.second_completion
8563 two sixth_completion
8564 three sixth_completion
8565 additional edit
8566 "
8567 .unindent()
8568 );
8569 apply_additional_edits
8570 });
8571 handle_resolve_completion_request(&mut fake_server, None).await;
8572 apply_additional_edits.await.unwrap();
8573
8574 async fn handle_completion_request(
8575 fake: &mut FakeLanguageServer,
8576 path: &'static str,
8577 position: Point,
8578 completions: Vec<(Range<Point>, &'static str)>,
8579 ) {
8580 fake.handle_request::<lsp::request::Completion, _>(move |params, _| {
8581 assert_eq!(
8582 params.text_document_position.text_document.uri,
8583 lsp::Url::from_file_path(path).unwrap()
8584 );
8585 assert_eq!(
8586 params.text_document_position.position,
8587 lsp::Position::new(position.row, position.column)
8588 );
8589 Some(lsp::CompletionResponse::Array(
8590 completions
8591 .iter()
8592 .map(|(range, new_text)| lsp::CompletionItem {
8593 label: new_text.to_string(),
8594 text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
8595 range: lsp::Range::new(
8596 lsp::Position::new(range.start.row, range.start.column),
8597 lsp::Position::new(range.start.row, range.start.column),
8598 ),
8599 new_text: new_text.to_string(),
8600 })),
8601 ..Default::default()
8602 })
8603 .collect(),
8604 ))
8605 })
8606 .next()
8607 .await;
8608 }
8609
8610 async fn handle_resolve_completion_request(
8611 fake: &mut FakeLanguageServer,
8612 edit: Option<(Range<Point>, &'static str)>,
8613 ) {
8614 fake.handle_request::<lsp::request::ResolveCompletionItem, _>(move |_, _| {
8615 lsp::CompletionItem {
8616 additional_text_edits: edit.clone().map(|(range, new_text)| {
8617 vec![lsp::TextEdit::new(
8618 lsp::Range::new(
8619 lsp::Position::new(range.start.row, range.start.column),
8620 lsp::Position::new(range.end.row, range.end.column),
8621 ),
8622 new_text.to_string(),
8623 )]
8624 }),
8625 ..Default::default()
8626 }
8627 })
8628 .next()
8629 .await;
8630 }
8631 }
8632
8633 #[gpui::test]
8634 async fn test_toggle_comment(cx: &mut gpui::TestAppContext) {
8635 let settings = cx.read(Settings::test);
8636 let language = Arc::new(Language::new(
8637 LanguageConfig {
8638 line_comment: Some("// ".to_string()),
8639 ..Default::default()
8640 },
8641 Some(tree_sitter_rust::language()),
8642 ));
8643
8644 let text = "
8645 fn a() {
8646 //b();
8647 // c();
8648 // d();
8649 }
8650 "
8651 .unindent();
8652
8653 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8654 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8655 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8656
8657 view.update(cx, |editor, cx| {
8658 // If multiple selections intersect a line, the line is only
8659 // toggled once.
8660 editor.select_display_ranges(
8661 &[
8662 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
8663 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
8664 ],
8665 cx,
8666 );
8667 editor.toggle_comments(&ToggleComments, cx);
8668 assert_eq!(
8669 editor.text(cx),
8670 "
8671 fn a() {
8672 b();
8673 c();
8674 d();
8675 }
8676 "
8677 .unindent()
8678 );
8679
8680 // The comment prefix is inserted at the same column for every line
8681 // in a selection.
8682 editor.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx);
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 // If a selection ends at the beginning of a line, that line is not toggled.
8697 editor.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx);
8698 editor.toggle_comments(&ToggleComments, cx);
8699 assert_eq!(
8700 editor.text(cx),
8701 "
8702 fn a() {
8703 // b();
8704 c();
8705 // d();
8706 }
8707 "
8708 .unindent()
8709 );
8710 });
8711 }
8712
8713 #[gpui::test]
8714 fn test_editing_disjoint_excerpts(cx: &mut gpui::MutableAppContext) {
8715 let settings = Settings::test(cx);
8716 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8717 let multibuffer = cx.add_model(|cx| {
8718 let mut multibuffer = MultiBuffer::new(0);
8719 multibuffer.push_excerpts(
8720 buffer.clone(),
8721 [
8722 Point::new(0, 0)..Point::new(0, 4),
8723 Point::new(1, 0)..Point::new(1, 4),
8724 ],
8725 cx,
8726 );
8727 multibuffer
8728 });
8729
8730 assert_eq!(multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb");
8731
8732 let (_, view) = cx.add_window(Default::default(), |cx| {
8733 build_editor(multibuffer, settings, cx)
8734 });
8735 view.update(cx, |view, cx| {
8736 assert_eq!(view.text(cx), "aaaa\nbbbb");
8737 view.select_ranges(
8738 [
8739 Point::new(0, 0)..Point::new(0, 0),
8740 Point::new(1, 0)..Point::new(1, 0),
8741 ],
8742 None,
8743 cx,
8744 );
8745
8746 view.handle_input(&Input("X".to_string()), cx);
8747 assert_eq!(view.text(cx), "Xaaaa\nXbbbb");
8748 assert_eq!(
8749 view.selected_ranges(cx),
8750 [
8751 Point::new(0, 1)..Point::new(0, 1),
8752 Point::new(1, 1)..Point::new(1, 1),
8753 ]
8754 )
8755 });
8756 }
8757
8758 #[gpui::test]
8759 fn test_editing_overlapping_excerpts(cx: &mut gpui::MutableAppContext) {
8760 let settings = Settings::test(cx);
8761 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8762 let multibuffer = cx.add_model(|cx| {
8763 let mut multibuffer = MultiBuffer::new(0);
8764 multibuffer.push_excerpts(
8765 buffer,
8766 [
8767 Point::new(0, 0)..Point::new(1, 4),
8768 Point::new(1, 0)..Point::new(2, 4),
8769 ],
8770 cx,
8771 );
8772 multibuffer
8773 });
8774
8775 assert_eq!(
8776 multibuffer.read(cx).read(cx).text(),
8777 "aaaa\nbbbb\nbbbb\ncccc"
8778 );
8779
8780 let (_, view) = cx.add_window(Default::default(), |cx| {
8781 build_editor(multibuffer, settings, cx)
8782 });
8783 view.update(cx, |view, cx| {
8784 view.select_ranges(
8785 [
8786 Point::new(1, 1)..Point::new(1, 1),
8787 Point::new(2, 3)..Point::new(2, 3),
8788 ],
8789 None,
8790 cx,
8791 );
8792
8793 view.handle_input(&Input("X".to_string()), cx);
8794 assert_eq!(view.text(cx), "aaaa\nbXbbXb\nbXbbXb\ncccc");
8795 assert_eq!(
8796 view.selected_ranges(cx),
8797 [
8798 Point::new(1, 2)..Point::new(1, 2),
8799 Point::new(2, 5)..Point::new(2, 5),
8800 ]
8801 );
8802
8803 view.newline(&Newline, cx);
8804 assert_eq!(view.text(cx), "aaaa\nbX\nbbX\nb\nbX\nbbX\nb\ncccc");
8805 assert_eq!(
8806 view.selected_ranges(cx),
8807 [
8808 Point::new(2, 0)..Point::new(2, 0),
8809 Point::new(6, 0)..Point::new(6, 0),
8810 ]
8811 );
8812 });
8813 }
8814
8815 #[gpui::test]
8816 fn test_refresh_selections(cx: &mut gpui::MutableAppContext) {
8817 let settings = Settings::test(cx);
8818 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8819 let mut excerpt1_id = None;
8820 let multibuffer = cx.add_model(|cx| {
8821 let mut multibuffer = MultiBuffer::new(0);
8822 excerpt1_id = multibuffer
8823 .push_excerpts(
8824 buffer.clone(),
8825 [
8826 Point::new(0, 0)..Point::new(1, 4),
8827 Point::new(1, 0)..Point::new(2, 4),
8828 ],
8829 cx,
8830 )
8831 .into_iter()
8832 .next();
8833 multibuffer
8834 });
8835 assert_eq!(
8836 multibuffer.read(cx).read(cx).text(),
8837 "aaaa\nbbbb\nbbbb\ncccc"
8838 );
8839 let (_, editor) = cx.add_window(Default::default(), |cx| {
8840 let mut editor = build_editor(multibuffer.clone(), settings, cx);
8841 editor.select_ranges(
8842 [
8843 Point::new(1, 3)..Point::new(1, 3),
8844 Point::new(2, 1)..Point::new(2, 1),
8845 ],
8846 None,
8847 cx,
8848 );
8849 editor
8850 });
8851
8852 // Refreshing selections is a no-op when excerpts haven't changed.
8853 editor.update(cx, |editor, cx| {
8854 editor.refresh_selections(cx);
8855 assert_eq!(
8856 editor.selected_ranges(cx),
8857 [
8858 Point::new(1, 3)..Point::new(1, 3),
8859 Point::new(2, 1)..Point::new(2, 1),
8860 ]
8861 );
8862 });
8863
8864 multibuffer.update(cx, |multibuffer, cx| {
8865 multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx);
8866 });
8867 editor.update(cx, |editor, cx| {
8868 // Removing an excerpt causes the first selection to become degenerate.
8869 assert_eq!(
8870 editor.selected_ranges(cx),
8871 [
8872 Point::new(0, 0)..Point::new(0, 0),
8873 Point::new(0, 1)..Point::new(0, 1)
8874 ]
8875 );
8876
8877 // Refreshing selections will relocate the first selection to the original buffer
8878 // location.
8879 editor.refresh_selections(cx);
8880 assert_eq!(
8881 editor.selected_ranges(cx),
8882 [
8883 Point::new(0, 1)..Point::new(0, 1),
8884 Point::new(0, 3)..Point::new(0, 3)
8885 ]
8886 );
8887 });
8888 }
8889
8890 #[gpui::test]
8891 async fn test_extra_newline_insertion(cx: &mut gpui::TestAppContext) {
8892 let settings = cx.read(Settings::test);
8893 let language = Arc::new(Language::new(
8894 LanguageConfig {
8895 brackets: vec![
8896 BracketPair {
8897 start: "{".to_string(),
8898 end: "}".to_string(),
8899 close: true,
8900 newline: true,
8901 },
8902 BracketPair {
8903 start: "/* ".to_string(),
8904 end: " */".to_string(),
8905 close: true,
8906 newline: true,
8907 },
8908 ],
8909 ..Default::default()
8910 },
8911 Some(tree_sitter_rust::language()),
8912 ));
8913
8914 let text = concat!(
8915 "{ }\n", // Suppress rustfmt
8916 " x\n", //
8917 " /* */\n", //
8918 "x\n", //
8919 "{{} }\n", //
8920 );
8921
8922 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8923 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8924 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8925 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
8926 .await;
8927
8928 view.update(cx, |view, cx| {
8929 view.select_display_ranges(
8930 &[
8931 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
8932 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
8933 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
8934 ],
8935 cx,
8936 );
8937 view.newline(&Newline, cx);
8938
8939 assert_eq!(
8940 view.buffer().read(cx).read(cx).text(),
8941 concat!(
8942 "{ \n", // Suppress rustfmt
8943 "\n", //
8944 "}\n", //
8945 " x\n", //
8946 " /* \n", //
8947 " \n", //
8948 " */\n", //
8949 "x\n", //
8950 "{{} \n", //
8951 "}\n", //
8952 )
8953 );
8954 });
8955 }
8956
8957 #[gpui::test]
8958 fn test_highlighted_ranges(cx: &mut gpui::MutableAppContext) {
8959 let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
8960 let settings = Settings::test(&cx);
8961 let (_, editor) = cx.add_window(Default::default(), |cx| {
8962 build_editor(buffer.clone(), settings, cx)
8963 });
8964
8965 editor.update(cx, |editor, cx| {
8966 struct Type1;
8967 struct Type2;
8968
8969 let buffer = buffer.read(cx).snapshot(cx);
8970
8971 let anchor_range = |range: Range<Point>| {
8972 buffer.anchor_after(range.start)..buffer.anchor_after(range.end)
8973 };
8974
8975 editor.highlight_background::<Type1>(
8976 vec![
8977 anchor_range(Point::new(2, 1)..Point::new(2, 3)),
8978 anchor_range(Point::new(4, 2)..Point::new(4, 4)),
8979 anchor_range(Point::new(6, 3)..Point::new(6, 5)),
8980 anchor_range(Point::new(8, 4)..Point::new(8, 6)),
8981 ],
8982 Color::red(),
8983 cx,
8984 );
8985 editor.highlight_background::<Type2>(
8986 vec![
8987 anchor_range(Point::new(3, 2)..Point::new(3, 5)),
8988 anchor_range(Point::new(5, 3)..Point::new(5, 6)),
8989 anchor_range(Point::new(7, 4)..Point::new(7, 7)),
8990 anchor_range(Point::new(9, 5)..Point::new(9, 8)),
8991 ],
8992 Color::green(),
8993 cx,
8994 );
8995
8996 let snapshot = editor.snapshot(cx);
8997 let mut highlighted_ranges = editor.background_highlights_in_range(
8998 anchor_range(Point::new(3, 4)..Point::new(7, 4)),
8999 &snapshot,
9000 );
9001 // Enforce a consistent ordering based on color without relying on the ordering of the
9002 // highlight's `TypeId` which is non-deterministic.
9003 highlighted_ranges.sort_unstable_by_key(|(_, color)| *color);
9004 assert_eq!(
9005 highlighted_ranges,
9006 &[
9007 (
9008 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 5),
9009 Color::green(),
9010 ),
9011 (
9012 DisplayPoint::new(5, 3)..DisplayPoint::new(5, 6),
9013 Color::green(),
9014 ),
9015 (
9016 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 4),
9017 Color::red(),
9018 ),
9019 (
9020 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
9021 Color::red(),
9022 ),
9023 ]
9024 );
9025 assert_eq!(
9026 editor.background_highlights_in_range(
9027 anchor_range(Point::new(5, 6)..Point::new(6, 4)),
9028 &snapshot,
9029 ),
9030 &[(
9031 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
9032 Color::red(),
9033 )]
9034 );
9035 });
9036 }
9037
9038 #[test]
9039 fn test_combine_syntax_and_fuzzy_match_highlights() {
9040 let string = "abcdefghijklmnop";
9041 let default = HighlightStyle::default();
9042 let syntax_ranges = [
9043 (
9044 0..3,
9045 HighlightStyle {
9046 color: Color::red(),
9047 ..default
9048 },
9049 ),
9050 (
9051 4..8,
9052 HighlightStyle {
9053 color: Color::green(),
9054 ..default
9055 },
9056 ),
9057 ];
9058 let match_indices = [4, 6, 7, 8];
9059 assert_eq!(
9060 combine_syntax_and_fuzzy_match_highlights(
9061 &string,
9062 default,
9063 syntax_ranges.into_iter(),
9064 &match_indices,
9065 ),
9066 &[
9067 (
9068 0..3,
9069 HighlightStyle {
9070 color: Color::red(),
9071 ..default
9072 },
9073 ),
9074 (
9075 4..5,
9076 HighlightStyle {
9077 color: Color::green(),
9078 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
9079 ..default
9080 },
9081 ),
9082 (
9083 5..6,
9084 HighlightStyle {
9085 color: Color::green(),
9086 ..default
9087 },
9088 ),
9089 (
9090 6..8,
9091 HighlightStyle {
9092 color: Color::green(),
9093 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
9094 ..default
9095 },
9096 ),
9097 (
9098 8..9,
9099 HighlightStyle {
9100 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
9101 ..default
9102 },
9103 ),
9104 ]
9105 );
9106 }
9107
9108 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
9109 let point = DisplayPoint::new(row as u32, column as u32);
9110 point..point
9111 }
9112
9113 fn build_editor(
9114 buffer: ModelHandle<MultiBuffer>,
9115 settings: Settings,
9116 cx: &mut ViewContext<Editor>,
9117 ) -> Editor {
9118 let settings = watch::channel_with(settings);
9119 Editor::new(EditorMode::Full, buffer, None, settings.1, None, cx)
9120 }
9121}
9122
9123trait RangeExt<T> {
9124 fn sorted(&self) -> Range<T>;
9125 fn to_inclusive(&self) -> RangeInclusive<T>;
9126}
9127
9128impl<T: Ord + Clone> RangeExt<T> for Range<T> {
9129 fn sorted(&self) -> Self {
9130 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
9131 }
9132
9133 fn to_inclusive(&self) -> RangeInclusive<T> {
9134 self.start.clone()..=self.end.clone()
9135 }
9136}