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 WeakModelHandle, WeakViewHandle,
30};
31use items::{BufferItemHandle, MultiBufferItemHandle};
32use itertools::Itertools as _;
33use language::{
34 AnchorRangeExt as _, BracketPair, Buffer, CodeAction, Completion, CompletionLabel, Diagnostic,
35 DiagnosticSeverity, Language, Point, Selection, SelectionGoal, TransactionId,
36};
37use multi_buffer::MultiBufferChunks;
38pub use multi_buffer::{
39 char_kind, Anchor, AnchorRangeExt, CharKind, ExcerptId, MultiBuffer, MultiBufferSnapshot,
40 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, EditorStyle};
61use util::{post_inc, ResultExt, TryFutureExt};
62use workspace::{ItemNavHistory, PathOpener, 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!(Rename);
122action!(ConfirmRename);
123action!(PageUp);
124action!(PageDown);
125action!(Fold);
126action!(Unfold);
127action!(FoldSelectedRanges);
128action!(Scroll, Vector2F);
129action!(Select, SelectPhase);
130action!(ShowCompletions);
131action!(ToggleCodeActions, bool);
132action!(ConfirmCompletion, Option<usize>);
133action!(ConfirmCodeAction, Option<usize>);
134
135pub fn init(cx: &mut MutableAppContext, path_openers: &mut Vec<Box<dyn PathOpener>>) {
136 path_openers.push(Box::new(items::BufferOpener));
137 cx.add_bindings(vec![
138 Binding::new("escape", Cancel, Some("Editor")),
139 Binding::new("backspace", Backspace, Some("Editor")),
140 Binding::new("ctrl-h", Backspace, Some("Editor")),
141 Binding::new("delete", Delete, Some("Editor")),
142 Binding::new("ctrl-d", Delete, Some("Editor")),
143 Binding::new("enter", Newline, Some("Editor && mode == full")),
144 Binding::new(
145 "alt-enter",
146 Input("\n".into()),
147 Some("Editor && mode == auto_height"),
148 ),
149 Binding::new(
150 "enter",
151 ConfirmCompletion(None),
152 Some("Editor && showing_completions"),
153 ),
154 Binding::new(
155 "enter",
156 ConfirmCodeAction(None),
157 Some("Editor && showing_code_actions"),
158 ),
159 Binding::new("enter", ConfirmRename, Some("Editor && renaming")),
160 Binding::new("tab", Tab, Some("Editor")),
161 Binding::new(
162 "tab",
163 ConfirmCompletion(None),
164 Some("Editor && showing_completions"),
165 ),
166 Binding::new("shift-tab", Outdent, Some("Editor")),
167 Binding::new("ctrl-shift-K", DeleteLine, Some("Editor")),
168 Binding::new(
169 "alt-backspace",
170 DeleteToPreviousWordBoundary,
171 Some("Editor"),
172 ),
173 Binding::new("alt-h", DeleteToPreviousWordBoundary, Some("Editor")),
174 Binding::new("alt-delete", DeleteToNextWordBoundary, Some("Editor")),
175 Binding::new("alt-d", DeleteToNextWordBoundary, Some("Editor")),
176 Binding::new("cmd-backspace", DeleteToBeginningOfLine, Some("Editor")),
177 Binding::new("cmd-delete", DeleteToEndOfLine, Some("Editor")),
178 Binding::new("ctrl-k", CutToEndOfLine, Some("Editor")),
179 Binding::new("cmd-shift-D", DuplicateLine, Some("Editor")),
180 Binding::new("ctrl-cmd-up", MoveLineUp, Some("Editor")),
181 Binding::new("ctrl-cmd-down", MoveLineDown, Some("Editor")),
182 Binding::new("cmd-x", Cut, Some("Editor")),
183 Binding::new("cmd-c", Copy, Some("Editor")),
184 Binding::new("cmd-v", Paste, Some("Editor")),
185 Binding::new("cmd-z", Undo, Some("Editor")),
186 Binding::new("cmd-shift-Z", Redo, Some("Editor")),
187 Binding::new("up", MoveUp, Some("Editor")),
188 Binding::new("down", MoveDown, Some("Editor")),
189 Binding::new("left", MoveLeft, Some("Editor")),
190 Binding::new("right", MoveRight, Some("Editor")),
191 Binding::new("ctrl-p", MoveUp, Some("Editor")),
192 Binding::new("ctrl-n", MoveDown, Some("Editor")),
193 Binding::new("ctrl-b", MoveLeft, Some("Editor")),
194 Binding::new("ctrl-f", MoveRight, Some("Editor")),
195 Binding::new("alt-left", MoveToPreviousWordBoundary, Some("Editor")),
196 Binding::new("alt-b", MoveToPreviousWordBoundary, Some("Editor")),
197 Binding::new("alt-right", MoveToNextWordBoundary, Some("Editor")),
198 Binding::new("alt-f", MoveToNextWordBoundary, Some("Editor")),
199 Binding::new("cmd-left", MoveToBeginningOfLine, Some("Editor")),
200 Binding::new("ctrl-a", MoveToBeginningOfLine, Some("Editor")),
201 Binding::new("cmd-right", MoveToEndOfLine, Some("Editor")),
202 Binding::new("ctrl-e", MoveToEndOfLine, Some("Editor")),
203 Binding::new("cmd-up", MoveToBeginning, Some("Editor")),
204 Binding::new("cmd-down", MoveToEnd, Some("Editor")),
205 Binding::new("shift-up", SelectUp, Some("Editor")),
206 Binding::new("ctrl-shift-P", SelectUp, Some("Editor")),
207 Binding::new("shift-down", SelectDown, Some("Editor")),
208 Binding::new("ctrl-shift-N", SelectDown, Some("Editor")),
209 Binding::new("shift-left", SelectLeft, Some("Editor")),
210 Binding::new("ctrl-shift-B", SelectLeft, Some("Editor")),
211 Binding::new("shift-right", SelectRight, Some("Editor")),
212 Binding::new("ctrl-shift-F", SelectRight, Some("Editor")),
213 Binding::new(
214 "alt-shift-left",
215 SelectToPreviousWordBoundary,
216 Some("Editor"),
217 ),
218 Binding::new("alt-shift-B", SelectToPreviousWordBoundary, Some("Editor")),
219 Binding::new("alt-shift-right", SelectToNextWordBoundary, Some("Editor")),
220 Binding::new("alt-shift-F", SelectToNextWordBoundary, Some("Editor")),
221 Binding::new(
222 "cmd-shift-left",
223 SelectToBeginningOfLine(true),
224 Some("Editor"),
225 ),
226 Binding::new(
227 "ctrl-shift-A",
228 SelectToBeginningOfLine(true),
229 Some("Editor"),
230 ),
231 Binding::new("cmd-shift-right", SelectToEndOfLine(true), Some("Editor")),
232 Binding::new("ctrl-shift-E", SelectToEndOfLine(true), Some("Editor")),
233 Binding::new("cmd-shift-up", SelectToBeginning, Some("Editor")),
234 Binding::new("cmd-shift-down", SelectToEnd, Some("Editor")),
235 Binding::new("cmd-a", SelectAll, Some("Editor")),
236 Binding::new("cmd-l", SelectLine, Some("Editor")),
237 Binding::new("cmd-shift-L", SplitSelectionIntoLines, Some("Editor")),
238 Binding::new("cmd-alt-up", AddSelectionAbove, Some("Editor")),
239 Binding::new("cmd-ctrl-p", AddSelectionAbove, Some("Editor")),
240 Binding::new("cmd-alt-down", AddSelectionBelow, Some("Editor")),
241 Binding::new("cmd-ctrl-n", AddSelectionBelow, Some("Editor")),
242 Binding::new("cmd-d", SelectNext(false), Some("Editor")),
243 Binding::new("cmd-k cmd-d", SelectNext(true), Some("Editor")),
244 Binding::new("cmd-/", ToggleComments, Some("Editor")),
245 Binding::new("alt-up", SelectLargerSyntaxNode, Some("Editor")),
246 Binding::new("ctrl-w", SelectLargerSyntaxNode, Some("Editor")),
247 Binding::new("alt-down", SelectSmallerSyntaxNode, Some("Editor")),
248 Binding::new("ctrl-shift-W", SelectSmallerSyntaxNode, Some("Editor")),
249 Binding::new("f8", ShowNextDiagnostic, Some("Editor")),
250 Binding::new("f2", Rename, Some("Editor")),
251 Binding::new("f12", GoToDefinition, Some("Editor")),
252 Binding::new("ctrl-m", MoveToEnclosingBracket, Some("Editor")),
253 Binding::new("pageup", PageUp, Some("Editor")),
254 Binding::new("pagedown", PageDown, Some("Editor")),
255 Binding::new("alt-cmd-[", Fold, Some("Editor")),
256 Binding::new("alt-cmd-]", Unfold, Some("Editor")),
257 Binding::new("alt-cmd-f", FoldSelectedRanges, Some("Editor")),
258 Binding::new("ctrl-space", ShowCompletions, Some("Editor")),
259 Binding::new("cmd-.", ToggleCodeActions(false), Some("Editor")),
260 ]);
261
262 cx.add_action(Editor::open_new);
263 cx.add_action(|this: &mut Editor, action: &Scroll, cx| this.set_scroll_position(action.0, cx));
264 cx.add_action(Editor::select);
265 cx.add_action(Editor::cancel);
266 cx.add_action(Editor::handle_input);
267 cx.add_action(Editor::newline);
268 cx.add_action(Editor::backspace);
269 cx.add_action(Editor::delete);
270 cx.add_action(Editor::tab);
271 cx.add_action(Editor::outdent);
272 cx.add_action(Editor::delete_line);
273 cx.add_action(Editor::delete_to_previous_word_boundary);
274 cx.add_action(Editor::delete_to_next_word_boundary);
275 cx.add_action(Editor::delete_to_beginning_of_line);
276 cx.add_action(Editor::delete_to_end_of_line);
277 cx.add_action(Editor::cut_to_end_of_line);
278 cx.add_action(Editor::duplicate_line);
279 cx.add_action(Editor::move_line_up);
280 cx.add_action(Editor::move_line_down);
281 cx.add_action(Editor::cut);
282 cx.add_action(Editor::copy);
283 cx.add_action(Editor::paste);
284 cx.add_action(Editor::undo);
285 cx.add_action(Editor::redo);
286 cx.add_action(Editor::move_up);
287 cx.add_action(Editor::move_down);
288 cx.add_action(Editor::move_left);
289 cx.add_action(Editor::move_right);
290 cx.add_action(Editor::move_to_previous_word_boundary);
291 cx.add_action(Editor::move_to_next_word_boundary);
292 cx.add_action(Editor::move_to_beginning_of_line);
293 cx.add_action(Editor::move_to_end_of_line);
294 cx.add_action(Editor::move_to_beginning);
295 cx.add_action(Editor::move_to_end);
296 cx.add_action(Editor::select_up);
297 cx.add_action(Editor::select_down);
298 cx.add_action(Editor::select_left);
299 cx.add_action(Editor::select_right);
300 cx.add_action(Editor::select_to_previous_word_boundary);
301 cx.add_action(Editor::select_to_next_word_boundary);
302 cx.add_action(Editor::select_to_beginning_of_line);
303 cx.add_action(Editor::select_to_end_of_line);
304 cx.add_action(Editor::select_to_beginning);
305 cx.add_action(Editor::select_to_end);
306 cx.add_action(Editor::select_all);
307 cx.add_action(Editor::select_line);
308 cx.add_action(Editor::split_selection_into_lines);
309 cx.add_action(Editor::add_selection_above);
310 cx.add_action(Editor::add_selection_below);
311 cx.add_action(Editor::select_next);
312 cx.add_action(Editor::toggle_comments);
313 cx.add_action(Editor::select_larger_syntax_node);
314 cx.add_action(Editor::select_smaller_syntax_node);
315 cx.add_action(Editor::move_to_enclosing_bracket);
316 cx.add_action(Editor::show_next_diagnostic);
317 cx.add_action(Editor::go_to_definition);
318 cx.add_action(Editor::page_up);
319 cx.add_action(Editor::page_down);
320 cx.add_action(Editor::fold);
321 cx.add_action(Editor::unfold);
322 cx.add_action(Editor::fold_selected_ranges);
323 cx.add_action(Editor::show_completions);
324 cx.add_action(Editor::toggle_code_actions);
325 cx.add_async_action(Editor::confirm_completion);
326 cx.add_async_action(Editor::confirm_code_action);
327 cx.add_async_action(Editor::rename);
328 cx.add_async_action(Editor::confirm_rename);
329}
330
331trait SelectionExt {
332 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize>;
333 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point>;
334 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint>;
335 fn spanned_rows(&self, include_end_if_at_line_start: bool, map: &DisplaySnapshot)
336 -> Range<u32>;
337}
338
339trait InvalidationRegion {
340 fn ranges(&self) -> &[Range<Anchor>];
341}
342
343#[derive(Clone, Debug)]
344pub enum SelectPhase {
345 Begin {
346 position: DisplayPoint,
347 add: bool,
348 click_count: usize,
349 },
350 BeginColumnar {
351 position: DisplayPoint,
352 overshoot: u32,
353 },
354 Extend {
355 position: DisplayPoint,
356 click_count: usize,
357 },
358 Update {
359 position: DisplayPoint,
360 overshoot: u32,
361 scroll_position: Vector2F,
362 },
363 End,
364}
365
366#[derive(Clone, Debug)]
367pub enum SelectMode {
368 Character,
369 Word(Range<Anchor>),
370 Line(Range<Anchor>),
371 All,
372}
373
374#[derive(PartialEq, Eq)]
375pub enum Autoscroll {
376 Fit,
377 Center,
378 Newest,
379}
380
381#[derive(Copy, Clone, PartialEq, Eq)]
382pub enum EditorMode {
383 SingleLine,
384 AutoHeight { max_lines: usize },
385 Full,
386}
387
388#[derive(Clone)]
389pub struct EditorSettings {
390 pub tab_size: usize,
391 pub soft_wrap: SoftWrap,
392 pub style: EditorStyle,
393}
394
395#[derive(Clone)]
396pub enum SoftWrap {
397 None,
398 EditorWidth,
399 Column(u32),
400}
401
402type CompletionId = usize;
403
404pub type BuildSettings = Arc<dyn 'static + Send + Sync + Fn(&AppContext) -> EditorSettings>;
405
406pub struct Editor {
407 handle: WeakViewHandle<Self>,
408 buffer: ModelHandle<MultiBuffer>,
409 display_map: ModelHandle<DisplayMap>,
410 next_selection_id: usize,
411 selections: Arc<[Selection<Anchor>]>,
412 pending_selection: Option<PendingSelection>,
413 columnar_selection_tail: Option<Anchor>,
414 add_selections_state: Option<AddSelectionsState>,
415 select_next_state: Option<SelectNextState>,
416 selection_history:
417 HashMap<TransactionId, (Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)>,
418 autoclose_stack: InvalidationStack<BracketPairState>,
419 snippet_stack: InvalidationStack<SnippetState>,
420 select_larger_syntax_node_stack: Vec<Box<[Selection<usize>]>>,
421 active_diagnostics: Option<ActiveDiagnosticGroup>,
422 scroll_position: Vector2F,
423 scroll_top_anchor: Option<Anchor>,
424 autoscroll_request: Option<Autoscroll>,
425 build_settings: BuildSettings,
426 project: Option<ModelHandle<Project>>,
427 focused: bool,
428 show_local_cursors: bool,
429 blink_epoch: usize,
430 blinking_paused: bool,
431 mode: EditorMode,
432 vertical_scroll_margin: f32,
433 placeholder_text: Option<Arc<str>>,
434 highlighted_rows: Option<Range<u32>>,
435 highlighted_ranges: BTreeMap<TypeId, (Color, Vec<Range<Anchor>>)>,
436 nav_history: Option<ItemNavHistory>,
437 context_menu: Option<ContextMenu>,
438 completion_tasks: Vec<(CompletionId, Task<Option<()>>)>,
439 next_completion_id: CompletionId,
440 available_code_actions: Option<(ModelHandle<Buffer>, Arc<[CodeAction]>)>,
441 code_actions_task: Option<Task<()>>,
442}
443
444pub struct EditorSnapshot {
445 pub mode: EditorMode,
446 pub display_snapshot: DisplaySnapshot,
447 pub placeholder_text: Option<Arc<str>>,
448 is_focused: bool,
449 scroll_position: Vector2F,
450 scroll_top_anchor: Option<Anchor>,
451}
452
453#[derive(Clone)]
454pub struct PendingSelection {
455 selection: Selection<Anchor>,
456 mode: SelectMode,
457}
458
459struct AddSelectionsState {
460 above: bool,
461 stack: Vec<usize>,
462}
463
464struct SelectNextState {
465 query: AhoCorasick,
466 wordwise: bool,
467 done: bool,
468}
469
470struct BracketPairState {
471 ranges: Vec<Range<Anchor>>,
472 pair: BracketPair,
473}
474
475struct SnippetState {
476 ranges: Vec<Vec<Range<Anchor>>>,
477 active_index: usize,
478}
479
480struct InvalidationStack<T>(Vec<T>);
481
482enum ContextMenu {
483 Completions(CompletionsMenu),
484 CodeActions(CodeActionsMenu),
485}
486
487impl ContextMenu {
488 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) -> bool {
489 if self.visible() {
490 match self {
491 ContextMenu::Completions(menu) => menu.select_prev(cx),
492 ContextMenu::CodeActions(menu) => menu.select_prev(cx),
493 }
494 true
495 } else {
496 false
497 }
498 }
499
500 fn select_next(&mut self, cx: &mut ViewContext<Editor>) -> bool {
501 if self.visible() {
502 match self {
503 ContextMenu::Completions(menu) => menu.select_next(cx),
504 ContextMenu::CodeActions(menu) => menu.select_next(cx),
505 }
506 true
507 } else {
508 false
509 }
510 }
511
512 fn visible(&self) -> bool {
513 match self {
514 ContextMenu::Completions(menu) => menu.visible(),
515 ContextMenu::CodeActions(menu) => menu.visible(),
516 }
517 }
518
519 fn render(
520 &self,
521 cursor_position: DisplayPoint,
522 build_settings: BuildSettings,
523 cx: &AppContext,
524 ) -> (DisplayPoint, ElementBox) {
525 match self {
526 ContextMenu::Completions(menu) => (cursor_position, menu.render(build_settings, cx)),
527 ContextMenu::CodeActions(menu) => menu.render(cursor_position, build_settings, cx),
528 }
529 }
530}
531
532struct CompletionsMenu {
533 editor_id: usize,
534 id: CompletionId,
535 initial_position: Anchor,
536 buffer: ModelHandle<Buffer>,
537 completions: Arc<[Completion]>,
538 match_candidates: Vec<StringMatchCandidate>,
539 matches: Arc<[StringMatch]>,
540 selected_item: usize,
541 list: UniformListState,
542}
543
544impl CompletionsMenu {
545 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) {
546 if self.selected_item > 0 {
547 self.selected_item -= 1;
548 self.list.scroll_to(ScrollTarget::Show(self.selected_item));
549 }
550 cx.notify();
551 }
552
553 fn select_next(&mut self, cx: &mut ViewContext<Editor>) {
554 if self.selected_item + 1 < self.matches.len() {
555 self.selected_item += 1;
556 self.list.scroll_to(ScrollTarget::Show(self.selected_item));
557 }
558 cx.notify();
559 }
560
561 fn visible(&self) -> bool {
562 !self.matches.is_empty()
563 }
564
565 fn render(&self, build_settings: BuildSettings, cx: &AppContext) -> ElementBox {
566 enum CompletionTag {}
567
568 let settings = build_settings(cx);
569 let completions = self.completions.clone();
570 let matches = self.matches.clone();
571 let editor_id = self.editor_id;
572 let selected_item = self.selected_item;
573 UniformList::new(self.list.clone(), matches.len(), move |range, items, cx| {
574 let settings = build_settings(cx);
575 let start_ix = range.start;
576 for (ix, mat) in matches[range].iter().enumerate() {
577 let completion = &completions[mat.candidate_id];
578 let item_ix = start_ix + ix;
579 items.push(
580 MouseEventHandler::new::<CompletionTag, _, _, _>(
581 (editor_id, mat.candidate_id),
582 cx,
583 |state, _| {
584 let item_style = if item_ix == selected_item {
585 settings.style.autocomplete.selected_item
586 } else if state.hovered {
587 settings.style.autocomplete.hovered_item
588 } else {
589 settings.style.autocomplete.item
590 };
591
592 Text::new(completion.label.text.clone(), settings.style.text.clone())
593 .with_soft_wrap(false)
594 .with_highlights(combine_syntax_and_fuzzy_match_highlights(
595 &completion.label.text,
596 settings.style.text.color.into(),
597 styled_runs_for_completion_label(
598 &completion.label,
599 settings.style.text.color,
600 &settings.style.syntax,
601 ),
602 &mat.positions,
603 ))
604 .contained()
605 .with_style(item_style)
606 .boxed()
607 },
608 )
609 .with_cursor_style(CursorStyle::PointingHand)
610 .on_mouse_down(move |cx| {
611 cx.dispatch_action(ConfirmCompletion(Some(item_ix)));
612 })
613 .boxed(),
614 );
615 }
616 })
617 .with_width_from_item(
618 self.matches
619 .iter()
620 .enumerate()
621 .max_by_key(|(_, mat)| {
622 self.completions[mat.candidate_id]
623 .label
624 .text
625 .chars()
626 .count()
627 })
628 .map(|(ix, _)| ix),
629 )
630 .contained()
631 .with_style(settings.style.autocomplete.container)
632 .boxed()
633 }
634
635 pub async fn filter(&mut self, query: Option<&str>, executor: Arc<executor::Background>) {
636 let mut matches = if let Some(query) = query {
637 fuzzy::match_strings(
638 &self.match_candidates,
639 query,
640 false,
641 100,
642 &Default::default(),
643 executor,
644 )
645 .await
646 } else {
647 self.match_candidates
648 .iter()
649 .enumerate()
650 .map(|(candidate_id, candidate)| StringMatch {
651 candidate_id,
652 score: Default::default(),
653 positions: Default::default(),
654 string: candidate.string.clone(),
655 })
656 .collect()
657 };
658 matches.sort_unstable_by_key(|mat| {
659 (
660 Reverse(OrderedFloat(mat.score)),
661 self.completions[mat.candidate_id].sort_key(),
662 )
663 });
664
665 for mat in &mut matches {
666 let filter_start = self.completions[mat.candidate_id].label.filter_range.start;
667 for position in &mut mat.positions {
668 *position += filter_start;
669 }
670 }
671
672 self.matches = matches.into();
673 }
674}
675
676#[derive(Clone)]
677struct CodeActionsMenu {
678 editor_id: usize,
679 actions: Arc<[CodeAction]>,
680 buffer: ModelHandle<Buffer>,
681 selected_item: usize,
682 list: UniformListState,
683 deployed_from_indicator: bool,
684}
685
686impl CodeActionsMenu {
687 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) {
688 if self.selected_item > 0 {
689 self.selected_item -= 1;
690 cx.notify()
691 }
692 }
693
694 fn select_next(&mut self, cx: &mut ViewContext<Editor>) {
695 if self.selected_item + 1 < self.actions.len() {
696 self.selected_item += 1;
697 cx.notify()
698 }
699 }
700
701 fn visible(&self) -> bool {
702 !self.actions.is_empty()
703 }
704
705 fn render(
706 &self,
707 mut cursor_position: DisplayPoint,
708 build_settings: BuildSettings,
709 cx: &AppContext,
710 ) -> (DisplayPoint, ElementBox) {
711 enum ActionTag {}
712
713 let settings = build_settings(cx);
714 let actions = self.actions.clone();
715 let editor_id = self.editor_id;
716 let selected_item = self.selected_item;
717 let element =
718 UniformList::new(self.list.clone(), actions.len(), move |range, items, cx| {
719 let settings = build_settings(cx);
720 let start_ix = range.start;
721 for (ix, action) in actions[range].iter().enumerate() {
722 let item_ix = start_ix + ix;
723 items.push(
724 MouseEventHandler::new::<ActionTag, _, _, _>(
725 (editor_id, item_ix),
726 cx,
727 |state, _| {
728 let item_style = if item_ix == selected_item {
729 settings.style.autocomplete.selected_item
730 } else if state.hovered {
731 settings.style.autocomplete.hovered_item
732 } else {
733 settings.style.autocomplete.item
734 };
735
736 Text::new(
737 action.lsp_action.title.clone(),
738 settings.style.text.clone(),
739 )
740 .with_soft_wrap(false)
741 .contained()
742 .with_style(item_style)
743 .boxed()
744 },
745 )
746 .with_cursor_style(CursorStyle::PointingHand)
747 .on_mouse_down(move |cx| {
748 cx.dispatch_action(ConfirmCodeAction(Some(item_ix)));
749 })
750 .boxed(),
751 );
752 }
753 })
754 .with_width_from_item(
755 self.actions
756 .iter()
757 .enumerate()
758 .max_by_key(|(_, action)| action.lsp_action.title.chars().count())
759 .map(|(ix, _)| ix),
760 )
761 .contained()
762 .with_style(settings.style.autocomplete.container)
763 .boxed();
764
765 if self.deployed_from_indicator {
766 *cursor_position.column_mut() = 0;
767 }
768
769 (cursor_position, element)
770 }
771}
772
773#[derive(Debug)]
774struct ActiveDiagnosticGroup {
775 primary_range: Range<Anchor>,
776 primary_message: String,
777 blocks: HashMap<BlockId, Diagnostic>,
778 is_valid: bool,
779}
780
781#[derive(Serialize, Deserialize)]
782struct ClipboardSelection {
783 len: usize,
784 is_entire_line: bool,
785}
786
787pub struct NavigationData {
788 anchor: Anchor,
789 offset: usize,
790}
791
792impl Editor {
793 pub fn single_line(build_settings: BuildSettings, cx: &mut ViewContext<Self>) -> Self {
794 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
795 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
796 let mut view = Self::for_buffer(buffer, build_settings, None, cx);
797 view.mode = EditorMode::SingleLine;
798 view
799 }
800
801 pub fn auto_height(
802 max_lines: usize,
803 build_settings: BuildSettings,
804 cx: &mut ViewContext<Self>,
805 ) -> Self {
806 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
807 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
808 let mut view = Self::for_buffer(buffer, build_settings, None, cx);
809 view.mode = EditorMode::AutoHeight { max_lines };
810 view
811 }
812
813 pub fn for_buffer(
814 buffer: ModelHandle<MultiBuffer>,
815 build_settings: BuildSettings,
816 project: Option<ModelHandle<Project>>,
817 cx: &mut ViewContext<Self>,
818 ) -> Self {
819 Self::new(buffer, build_settings, project, cx)
820 }
821
822 pub fn clone(&self, cx: &mut ViewContext<Self>) -> Self {
823 let mut clone = Self::new(
824 self.buffer.clone(),
825 self.build_settings.clone(),
826 self.project.clone(),
827 cx,
828 );
829 clone.scroll_position = self.scroll_position;
830 clone.scroll_top_anchor = self.scroll_top_anchor.clone();
831 clone.nav_history = self
832 .nav_history
833 .as_ref()
834 .map(|nav_history| ItemNavHistory::new(nav_history.history(), &cx.handle()));
835 clone
836 }
837
838 pub fn new(
839 buffer: ModelHandle<MultiBuffer>,
840 build_settings: BuildSettings,
841 project: Option<ModelHandle<Project>>,
842 cx: &mut ViewContext<Self>,
843 ) -> Self {
844 let settings = build_settings(cx);
845 let display_map = cx.add_model(|cx| {
846 DisplayMap::new(
847 buffer.clone(),
848 settings.tab_size,
849 settings.style.text.font_id,
850 settings.style.text.font_size,
851 None,
852 2,
853 1,
854 cx,
855 )
856 });
857 cx.observe(&buffer, Self::on_buffer_changed).detach();
858 cx.subscribe(&buffer, Self::on_buffer_event).detach();
859 cx.observe(&display_map, Self::on_display_map_changed)
860 .detach();
861
862 let mut this = Self {
863 handle: cx.weak_handle(),
864 buffer,
865 display_map,
866 selections: Arc::from([]),
867 pending_selection: Some(PendingSelection {
868 selection: Selection {
869 id: 0,
870 start: Anchor::min(),
871 end: Anchor::min(),
872 reversed: false,
873 goal: SelectionGoal::None,
874 },
875 mode: SelectMode::Character,
876 }),
877 columnar_selection_tail: None,
878 next_selection_id: 1,
879 add_selections_state: None,
880 select_next_state: None,
881 selection_history: Default::default(),
882 autoclose_stack: Default::default(),
883 snippet_stack: Default::default(),
884 select_larger_syntax_node_stack: Vec::new(),
885 active_diagnostics: None,
886 build_settings,
887 project,
888 scroll_position: Vector2F::zero(),
889 scroll_top_anchor: None,
890 autoscroll_request: None,
891 focused: false,
892 show_local_cursors: false,
893 blink_epoch: 0,
894 blinking_paused: false,
895 mode: EditorMode::Full,
896 vertical_scroll_margin: 3.0,
897 placeholder_text: None,
898 highlighted_rows: None,
899 highlighted_ranges: Default::default(),
900 nav_history: None,
901 context_menu: None,
902 completion_tasks: Default::default(),
903 next_completion_id: 0,
904 available_code_actions: Default::default(),
905 code_actions_task: Default::default(),
906 };
907 this.end_selection(cx);
908 this
909 }
910
911 pub fn open_new(
912 workspace: &mut Workspace,
913 _: &workspace::OpenNew,
914 cx: &mut ViewContext<Workspace>,
915 ) {
916 let buffer = cx
917 .add_model(|cx| Buffer::new(0, "", cx).with_language(language::PLAIN_TEXT.clone(), cx));
918 workspace.open_item(BufferItemHandle(buffer), cx);
919 }
920
921 pub fn replica_id(&self, cx: &AppContext) -> ReplicaId {
922 self.buffer.read(cx).replica_id()
923 }
924
925 pub fn buffer(&self) -> &ModelHandle<MultiBuffer> {
926 &self.buffer
927 }
928
929 pub fn title(&self, cx: &AppContext) -> String {
930 self.buffer().read(cx).title(cx)
931 }
932
933 pub fn snapshot(&mut self, cx: &mut MutableAppContext) -> EditorSnapshot {
934 EditorSnapshot {
935 mode: self.mode,
936 display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
937 scroll_position: self.scroll_position,
938 scroll_top_anchor: self.scroll_top_anchor.clone(),
939 placeholder_text: self.placeholder_text.clone(),
940 is_focused: self
941 .handle
942 .upgrade(cx)
943 .map_or(false, |handle| handle.is_focused(cx)),
944 }
945 }
946
947 pub fn language<'a>(&self, cx: &'a AppContext) -> Option<&'a Arc<Language>> {
948 self.buffer.read(cx).language(cx)
949 }
950
951 pub fn set_placeholder_text(
952 &mut self,
953 placeholder_text: impl Into<Arc<str>>,
954 cx: &mut ViewContext<Self>,
955 ) {
956 self.placeholder_text = Some(placeholder_text.into());
957 cx.notify();
958 }
959
960 pub fn set_vertical_scroll_margin(&mut self, margin_rows: usize, cx: &mut ViewContext<Self>) {
961 self.vertical_scroll_margin = margin_rows as f32;
962 cx.notify();
963 }
964
965 pub fn set_scroll_position(&mut self, scroll_position: Vector2F, cx: &mut ViewContext<Self>) {
966 let map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
967
968 if scroll_position.y() == 0. {
969 self.scroll_top_anchor = None;
970 self.scroll_position = scroll_position;
971 } else {
972 let scroll_top_buffer_offset =
973 DisplayPoint::new(scroll_position.y() as u32, 0).to_offset(&map, Bias::Right);
974 let anchor = map
975 .buffer_snapshot
976 .anchor_at(scroll_top_buffer_offset, Bias::Right);
977 self.scroll_position = vec2f(
978 scroll_position.x(),
979 scroll_position.y() - anchor.to_display_point(&map).row() as f32,
980 );
981 self.scroll_top_anchor = Some(anchor);
982 }
983
984 cx.notify();
985 }
986
987 pub fn scroll_position(&self, cx: &mut ViewContext<Self>) -> Vector2F {
988 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
989 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor)
990 }
991
992 pub fn clamp_scroll_left(&mut self, max: f32) -> bool {
993 if max < self.scroll_position.x() {
994 self.scroll_position.set_x(max);
995 true
996 } else {
997 false
998 }
999 }
1000
1001 pub fn autoscroll_vertically(
1002 &mut self,
1003 viewport_height: f32,
1004 line_height: f32,
1005 cx: &mut ViewContext<Self>,
1006 ) -> bool {
1007 let visible_lines = viewport_height / line_height;
1008 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1009 let mut scroll_position =
1010 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor);
1011 let max_scroll_top = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
1012 (display_map.max_point().row() as f32 - visible_lines + 1.).max(0.)
1013 } else {
1014 display_map.max_point().row().saturating_sub(1) as f32
1015 };
1016 if scroll_position.y() > max_scroll_top {
1017 scroll_position.set_y(max_scroll_top);
1018 self.set_scroll_position(scroll_position, cx);
1019 }
1020
1021 let autoscroll = if let Some(autoscroll) = self.autoscroll_request.take() {
1022 autoscroll
1023 } else {
1024 return false;
1025 };
1026
1027 let first_cursor_top;
1028 let last_cursor_bottom;
1029 if let Some(highlighted_rows) = &self.highlighted_rows {
1030 first_cursor_top = highlighted_rows.start as f32;
1031 last_cursor_bottom = first_cursor_top + 1.;
1032 } else if autoscroll == Autoscroll::Newest {
1033 let newest_selection = self.newest_selection::<Point>(&display_map.buffer_snapshot);
1034 first_cursor_top = newest_selection.head().to_display_point(&display_map).row() as f32;
1035 last_cursor_bottom = first_cursor_top + 1.;
1036 } else {
1037 let selections = self.local_selections::<Point>(cx);
1038 first_cursor_top = selections
1039 .first()
1040 .unwrap()
1041 .head()
1042 .to_display_point(&display_map)
1043 .row() as f32;
1044 last_cursor_bottom = selections
1045 .last()
1046 .unwrap()
1047 .head()
1048 .to_display_point(&display_map)
1049 .row() as f32
1050 + 1.0;
1051 }
1052
1053 let margin = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
1054 0.
1055 } else {
1056 ((visible_lines - (last_cursor_bottom - first_cursor_top)) / 2.0).floor()
1057 };
1058 if margin < 0.0 {
1059 return false;
1060 }
1061
1062 match autoscroll {
1063 Autoscroll::Fit | Autoscroll::Newest => {
1064 let margin = margin.min(self.vertical_scroll_margin);
1065 let target_top = (first_cursor_top - margin).max(0.0);
1066 let target_bottom = last_cursor_bottom + margin;
1067 let start_row = scroll_position.y();
1068 let end_row = start_row + visible_lines;
1069
1070 if target_top < start_row {
1071 scroll_position.set_y(target_top);
1072 self.set_scroll_position(scroll_position, cx);
1073 } else if target_bottom >= end_row {
1074 scroll_position.set_y(target_bottom - visible_lines);
1075 self.set_scroll_position(scroll_position, cx);
1076 }
1077 }
1078 Autoscroll::Center => {
1079 scroll_position.set_y((first_cursor_top - margin).max(0.0));
1080 self.set_scroll_position(scroll_position, cx);
1081 }
1082 }
1083
1084 true
1085 }
1086
1087 pub fn autoscroll_horizontally(
1088 &mut self,
1089 start_row: u32,
1090 viewport_width: f32,
1091 scroll_width: f32,
1092 max_glyph_width: f32,
1093 layouts: &[text_layout::Line],
1094 cx: &mut ViewContext<Self>,
1095 ) -> bool {
1096 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1097 let selections = self.local_selections::<Point>(cx);
1098
1099 let mut target_left;
1100 let mut target_right;
1101
1102 if self.highlighted_rows.is_some() {
1103 target_left = 0.0_f32;
1104 target_right = 0.0_f32;
1105 } else {
1106 target_left = std::f32::INFINITY;
1107 target_right = 0.0_f32;
1108 for selection in selections {
1109 let head = selection.head().to_display_point(&display_map);
1110 if head.row() >= start_row && head.row() < start_row + layouts.len() as u32 {
1111 let start_column = head.column().saturating_sub(3);
1112 let end_column = cmp::min(display_map.line_len(head.row()), head.column() + 3);
1113 target_left = target_left.min(
1114 layouts[(head.row() - start_row) as usize]
1115 .x_for_index(start_column as usize),
1116 );
1117 target_right = target_right.max(
1118 layouts[(head.row() - start_row) as usize].x_for_index(end_column as usize)
1119 + max_glyph_width,
1120 );
1121 }
1122 }
1123 }
1124
1125 target_right = target_right.min(scroll_width);
1126
1127 if target_right - target_left > viewport_width {
1128 return false;
1129 }
1130
1131 let scroll_left = self.scroll_position.x() * max_glyph_width;
1132 let scroll_right = scroll_left + viewport_width;
1133
1134 if target_left < scroll_left {
1135 self.scroll_position.set_x(target_left / max_glyph_width);
1136 true
1137 } else if target_right > scroll_right {
1138 self.scroll_position
1139 .set_x((target_right - viewport_width) / max_glyph_width);
1140 true
1141 } else {
1142 false
1143 }
1144 }
1145
1146 fn select(&mut self, Select(phase): &Select, cx: &mut ViewContext<Self>) {
1147 self.hide_context_menu(cx);
1148
1149 match phase {
1150 SelectPhase::Begin {
1151 position,
1152 add,
1153 click_count,
1154 } => self.begin_selection(*position, *add, *click_count, cx),
1155 SelectPhase::BeginColumnar {
1156 position,
1157 overshoot,
1158 } => self.begin_columnar_selection(*position, *overshoot, cx),
1159 SelectPhase::Extend {
1160 position,
1161 click_count,
1162 } => self.extend_selection(*position, *click_count, cx),
1163 SelectPhase::Update {
1164 position,
1165 overshoot,
1166 scroll_position,
1167 } => self.update_selection(*position, *overshoot, *scroll_position, cx),
1168 SelectPhase::End => self.end_selection(cx),
1169 }
1170 }
1171
1172 fn extend_selection(
1173 &mut self,
1174 position: DisplayPoint,
1175 click_count: usize,
1176 cx: &mut ViewContext<Self>,
1177 ) {
1178 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1179 let tail = self
1180 .newest_selection::<usize>(&display_map.buffer_snapshot)
1181 .tail();
1182 self.begin_selection(position, false, click_count, cx);
1183
1184 let position = position.to_offset(&display_map, Bias::Left);
1185 let tail_anchor = display_map.buffer_snapshot.anchor_before(tail);
1186 let mut pending = self.pending_selection.clone().unwrap();
1187
1188 if position >= tail {
1189 pending.selection.start = tail_anchor.clone();
1190 } else {
1191 pending.selection.end = tail_anchor.clone();
1192 pending.selection.reversed = true;
1193 }
1194
1195 match &mut pending.mode {
1196 SelectMode::Word(range) | SelectMode::Line(range) => {
1197 *range = tail_anchor.clone()..tail_anchor
1198 }
1199 _ => {}
1200 }
1201
1202 self.set_selections(self.selections.clone(), Some(pending), cx);
1203 }
1204
1205 fn begin_selection(
1206 &mut self,
1207 position: DisplayPoint,
1208 add: bool,
1209 click_count: usize,
1210 cx: &mut ViewContext<Self>,
1211 ) {
1212 if !self.focused {
1213 cx.focus_self();
1214 cx.emit(Event::Activate);
1215 }
1216
1217 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1218 let buffer = &display_map.buffer_snapshot;
1219 let newest_selection = self.newest_anchor_selection().clone();
1220
1221 let start;
1222 let end;
1223 let mode;
1224 match click_count {
1225 1 => {
1226 start = buffer.anchor_before(position.to_point(&display_map));
1227 end = start.clone();
1228 mode = SelectMode::Character;
1229 }
1230 2 => {
1231 let range = movement::surrounding_word(&display_map, position);
1232 start = buffer.anchor_before(range.start.to_point(&display_map));
1233 end = buffer.anchor_before(range.end.to_point(&display_map));
1234 mode = SelectMode::Word(start.clone()..end.clone());
1235 }
1236 3 => {
1237 let position = display_map
1238 .clip_point(position, Bias::Left)
1239 .to_point(&display_map);
1240 let line_start = display_map.prev_line_boundary(position).0;
1241 let next_line_start = buffer.clip_point(
1242 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1243 Bias::Left,
1244 );
1245 start = buffer.anchor_before(line_start);
1246 end = buffer.anchor_before(next_line_start);
1247 mode = SelectMode::Line(start.clone()..end.clone());
1248 }
1249 _ => {
1250 start = buffer.anchor_before(0);
1251 end = buffer.anchor_before(buffer.len());
1252 mode = SelectMode::All;
1253 }
1254 }
1255
1256 self.push_to_nav_history(newest_selection.head(), Some(end.to_point(&buffer)), cx);
1257
1258 let selection = Selection {
1259 id: post_inc(&mut self.next_selection_id),
1260 start,
1261 end,
1262 reversed: false,
1263 goal: SelectionGoal::None,
1264 };
1265
1266 let mut selections;
1267 if add {
1268 selections = self.selections.clone();
1269 // Remove the newest selection if it was added due to a previous mouse up
1270 // within this multi-click.
1271 if click_count > 1 {
1272 selections = self
1273 .selections
1274 .iter()
1275 .filter(|selection| selection.id != newest_selection.id)
1276 .cloned()
1277 .collect();
1278 }
1279 } else {
1280 selections = Arc::from([]);
1281 }
1282 self.set_selections(selections, Some(PendingSelection { selection, mode }), cx);
1283
1284 cx.notify();
1285 }
1286
1287 fn begin_columnar_selection(
1288 &mut self,
1289 position: DisplayPoint,
1290 overshoot: u32,
1291 cx: &mut ViewContext<Self>,
1292 ) {
1293 if !self.focused {
1294 cx.focus_self();
1295 cx.emit(Event::Activate);
1296 }
1297
1298 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1299 let tail = self
1300 .newest_selection::<Point>(&display_map.buffer_snapshot)
1301 .tail();
1302 self.columnar_selection_tail = Some(display_map.buffer_snapshot.anchor_before(tail));
1303
1304 self.select_columns(
1305 tail.to_display_point(&display_map),
1306 position,
1307 overshoot,
1308 &display_map,
1309 cx,
1310 );
1311 }
1312
1313 fn update_selection(
1314 &mut self,
1315 position: DisplayPoint,
1316 overshoot: u32,
1317 scroll_position: Vector2F,
1318 cx: &mut ViewContext<Self>,
1319 ) {
1320 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1321
1322 if let Some(tail) = self.columnar_selection_tail.as_ref() {
1323 let tail = tail.to_display_point(&display_map);
1324 self.select_columns(tail, position, overshoot, &display_map, cx);
1325 } else if let Some(mut pending) = self.pending_selection.clone() {
1326 let buffer = self.buffer.read(cx).snapshot(cx);
1327 let head;
1328 let tail;
1329 match &pending.mode {
1330 SelectMode::Character => {
1331 head = position.to_point(&display_map);
1332 tail = pending.selection.tail().to_point(&buffer);
1333 }
1334 SelectMode::Word(original_range) => {
1335 let original_display_range = original_range.start.to_display_point(&display_map)
1336 ..original_range.end.to_display_point(&display_map);
1337 let original_buffer_range = original_display_range.start.to_point(&display_map)
1338 ..original_display_range.end.to_point(&display_map);
1339 if movement::is_inside_word(&display_map, position)
1340 || original_display_range.contains(&position)
1341 {
1342 let word_range = movement::surrounding_word(&display_map, position);
1343 if word_range.start < original_display_range.start {
1344 head = word_range.start.to_point(&display_map);
1345 } else {
1346 head = word_range.end.to_point(&display_map);
1347 }
1348 } else {
1349 head = position.to_point(&display_map);
1350 }
1351
1352 if head <= original_buffer_range.start {
1353 tail = original_buffer_range.end;
1354 } else {
1355 tail = original_buffer_range.start;
1356 }
1357 }
1358 SelectMode::Line(original_range) => {
1359 let original_range = original_range.to_point(&display_map.buffer_snapshot);
1360
1361 let position = display_map
1362 .clip_point(position, Bias::Left)
1363 .to_point(&display_map);
1364 let line_start = display_map.prev_line_boundary(position).0;
1365 let next_line_start = buffer.clip_point(
1366 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1367 Bias::Left,
1368 );
1369
1370 if line_start < original_range.start {
1371 head = line_start
1372 } else {
1373 head = next_line_start
1374 }
1375
1376 if head <= original_range.start {
1377 tail = original_range.end;
1378 } else {
1379 tail = original_range.start;
1380 }
1381 }
1382 SelectMode::All => {
1383 return;
1384 }
1385 };
1386
1387 if head < tail {
1388 pending.selection.start = buffer.anchor_before(head);
1389 pending.selection.end = buffer.anchor_before(tail);
1390 pending.selection.reversed = true;
1391 } else {
1392 pending.selection.start = buffer.anchor_before(tail);
1393 pending.selection.end = buffer.anchor_before(head);
1394 pending.selection.reversed = false;
1395 }
1396 self.set_selections(self.selections.clone(), Some(pending), cx);
1397 } else {
1398 log::error!("update_selection dispatched with no pending selection");
1399 return;
1400 }
1401
1402 self.set_scroll_position(scroll_position, cx);
1403 cx.notify();
1404 }
1405
1406 fn end_selection(&mut self, cx: &mut ViewContext<Self>) {
1407 self.columnar_selection_tail.take();
1408 if self.pending_selection.is_some() {
1409 let selections = self.local_selections::<usize>(cx);
1410 self.update_selections(selections, None, cx);
1411 }
1412 }
1413
1414 fn select_columns(
1415 &mut self,
1416 tail: DisplayPoint,
1417 head: DisplayPoint,
1418 overshoot: u32,
1419 display_map: &DisplaySnapshot,
1420 cx: &mut ViewContext<Self>,
1421 ) {
1422 let start_row = cmp::min(tail.row(), head.row());
1423 let end_row = cmp::max(tail.row(), head.row());
1424 let start_column = cmp::min(tail.column(), head.column() + overshoot);
1425 let end_column = cmp::max(tail.column(), head.column() + overshoot);
1426 let reversed = start_column < tail.column();
1427
1428 let selections = (start_row..=end_row)
1429 .filter_map(|row| {
1430 if start_column <= display_map.line_len(row) && !display_map.is_block_line(row) {
1431 let start = display_map
1432 .clip_point(DisplayPoint::new(row, start_column), Bias::Left)
1433 .to_point(&display_map);
1434 let end = display_map
1435 .clip_point(DisplayPoint::new(row, end_column), Bias::Right)
1436 .to_point(&display_map);
1437 Some(Selection {
1438 id: post_inc(&mut self.next_selection_id),
1439 start,
1440 end,
1441 reversed,
1442 goal: SelectionGoal::None,
1443 })
1444 } else {
1445 None
1446 }
1447 })
1448 .collect::<Vec<_>>();
1449
1450 self.update_selections(selections, None, cx);
1451 cx.notify();
1452 }
1453
1454 pub fn is_selecting(&self) -> bool {
1455 self.pending_selection.is_some() || self.columnar_selection_tail.is_some()
1456 }
1457
1458 pub fn cancel(&mut self, _: &Cancel, cx: &mut ViewContext<Self>) {
1459 if self.hide_context_menu(cx).is_some() {
1460 return;
1461 }
1462
1463 if self.snippet_stack.pop().is_some() {
1464 return;
1465 }
1466
1467 if self.mode != EditorMode::Full {
1468 cx.propagate_action();
1469 return;
1470 }
1471
1472 if self.active_diagnostics.is_some() {
1473 self.dismiss_diagnostics(cx);
1474 } else if let Some(pending) = self.pending_selection.clone() {
1475 let mut selections = self.selections.clone();
1476 if selections.is_empty() {
1477 selections = Arc::from([pending.selection]);
1478 }
1479 self.set_selections(selections, None, cx);
1480 self.request_autoscroll(Autoscroll::Fit, cx);
1481 } else {
1482 let buffer = self.buffer.read(cx).snapshot(cx);
1483 let mut oldest_selection = self.oldest_selection::<usize>(&buffer);
1484 if self.selection_count() == 1 {
1485 if oldest_selection.is_empty() {
1486 cx.propagate_action();
1487 return;
1488 }
1489
1490 oldest_selection.start = oldest_selection.head().clone();
1491 oldest_selection.end = oldest_selection.head().clone();
1492 }
1493 self.update_selections(vec![oldest_selection], Some(Autoscroll::Fit), cx);
1494 }
1495 }
1496
1497 #[cfg(any(test, feature = "test-support"))]
1498 pub fn selected_ranges<D: TextDimension + Ord + Sub<D, Output = D>>(
1499 &self,
1500 cx: &mut MutableAppContext,
1501 ) -> Vec<Range<D>> {
1502 self.local_selections::<D>(cx)
1503 .iter()
1504 .map(|s| {
1505 if s.reversed {
1506 s.end.clone()..s.start.clone()
1507 } else {
1508 s.start.clone()..s.end.clone()
1509 }
1510 })
1511 .collect()
1512 }
1513
1514 #[cfg(any(test, feature = "test-support"))]
1515 pub fn selected_display_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
1516 let display_map = self
1517 .display_map
1518 .update(cx, |display_map, cx| display_map.snapshot(cx));
1519 self.selections
1520 .iter()
1521 .chain(
1522 self.pending_selection
1523 .as_ref()
1524 .map(|pending| &pending.selection),
1525 )
1526 .map(|s| {
1527 if s.reversed {
1528 s.end.to_display_point(&display_map)..s.start.to_display_point(&display_map)
1529 } else {
1530 s.start.to_display_point(&display_map)..s.end.to_display_point(&display_map)
1531 }
1532 })
1533 .collect()
1534 }
1535
1536 pub fn select_ranges<I, T>(
1537 &mut self,
1538 ranges: I,
1539 autoscroll: Option<Autoscroll>,
1540 cx: &mut ViewContext<Self>,
1541 ) where
1542 I: IntoIterator<Item = Range<T>>,
1543 T: ToOffset,
1544 {
1545 let buffer = self.buffer.read(cx).snapshot(cx);
1546 let selections = ranges
1547 .into_iter()
1548 .map(|range| {
1549 let mut start = range.start.to_offset(&buffer);
1550 let mut end = range.end.to_offset(&buffer);
1551 let reversed = if start > end {
1552 mem::swap(&mut start, &mut end);
1553 true
1554 } else {
1555 false
1556 };
1557 Selection {
1558 id: post_inc(&mut self.next_selection_id),
1559 start,
1560 end,
1561 reversed,
1562 goal: SelectionGoal::None,
1563 }
1564 })
1565 .collect::<Vec<_>>();
1566 self.update_selections(selections, autoscroll, cx);
1567 }
1568
1569 #[cfg(any(test, feature = "test-support"))]
1570 pub fn select_display_ranges<'a, T>(&mut self, ranges: T, cx: &mut ViewContext<Self>)
1571 where
1572 T: IntoIterator<Item = &'a Range<DisplayPoint>>,
1573 {
1574 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1575 let selections = ranges
1576 .into_iter()
1577 .map(|range| {
1578 let mut start = range.start;
1579 let mut end = range.end;
1580 let reversed = if start > end {
1581 mem::swap(&mut start, &mut end);
1582 true
1583 } else {
1584 false
1585 };
1586 Selection {
1587 id: post_inc(&mut self.next_selection_id),
1588 start: start.to_point(&display_map),
1589 end: end.to_point(&display_map),
1590 reversed,
1591 goal: SelectionGoal::None,
1592 }
1593 })
1594 .collect();
1595 self.update_selections(selections, None, cx);
1596 }
1597
1598 pub fn handle_input(&mut self, action: &Input, cx: &mut ViewContext<Self>) {
1599 let text = action.0.as_ref();
1600 if !self.skip_autoclose_end(text, cx) {
1601 self.start_transaction(cx);
1602 self.insert(text, cx);
1603 self.autoclose_pairs(cx);
1604 self.end_transaction(cx);
1605 self.trigger_completion_on_input(text, cx);
1606 }
1607 }
1608
1609 pub fn newline(&mut self, _: &Newline, cx: &mut ViewContext<Self>) {
1610 self.start_transaction(cx);
1611 let mut old_selections = SmallVec::<[_; 32]>::new();
1612 {
1613 let selections = self.local_selections::<usize>(cx);
1614 let buffer = self.buffer.read(cx).snapshot(cx);
1615 for selection in selections.iter() {
1616 let start_point = selection.start.to_point(&buffer);
1617 let indent = buffer
1618 .indent_column_for_line(start_point.row)
1619 .min(start_point.column);
1620 let start = selection.start;
1621 let end = selection.end;
1622
1623 let mut insert_extra_newline = false;
1624 if let Some(language) = buffer.language() {
1625 let leading_whitespace_len = buffer
1626 .reversed_chars_at(start)
1627 .take_while(|c| c.is_whitespace() && *c != '\n')
1628 .map(|c| c.len_utf8())
1629 .sum::<usize>();
1630
1631 let trailing_whitespace_len = buffer
1632 .chars_at(end)
1633 .take_while(|c| c.is_whitespace() && *c != '\n')
1634 .map(|c| c.len_utf8())
1635 .sum::<usize>();
1636
1637 insert_extra_newline = language.brackets().iter().any(|pair| {
1638 let pair_start = pair.start.trim_end();
1639 let pair_end = pair.end.trim_start();
1640
1641 pair.newline
1642 && buffer.contains_str_at(end + trailing_whitespace_len, pair_end)
1643 && buffer.contains_str_at(
1644 (start - leading_whitespace_len).saturating_sub(pair_start.len()),
1645 pair_start,
1646 )
1647 });
1648 }
1649
1650 old_selections.push((
1651 selection.id,
1652 buffer.anchor_after(end),
1653 start..end,
1654 indent,
1655 insert_extra_newline,
1656 ));
1657 }
1658 }
1659
1660 self.buffer.update(cx, |buffer, cx| {
1661 let mut delta = 0_isize;
1662 let mut pending_edit: Option<PendingEdit> = None;
1663 for (_, _, range, indent, insert_extra_newline) in &old_selections {
1664 if pending_edit.as_ref().map_or(false, |pending| {
1665 pending.indent != *indent
1666 || pending.insert_extra_newline != *insert_extra_newline
1667 }) {
1668 let pending = pending_edit.take().unwrap();
1669 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1670 new_text.push('\n');
1671 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1672 if pending.insert_extra_newline {
1673 new_text = new_text.repeat(2);
1674 }
1675 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1676 delta += pending.delta;
1677 }
1678
1679 let start = (range.start as isize + delta) as usize;
1680 let end = (range.end as isize + delta) as usize;
1681 let mut text_len = *indent as usize + 1;
1682 if *insert_extra_newline {
1683 text_len *= 2;
1684 }
1685
1686 let pending = pending_edit.get_or_insert_with(Default::default);
1687 pending.delta += text_len as isize - (end - start) as isize;
1688 pending.indent = *indent;
1689 pending.insert_extra_newline = *insert_extra_newline;
1690 pending.ranges.push(start..end);
1691 }
1692
1693 let pending = pending_edit.unwrap();
1694 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1695 new_text.push('\n');
1696 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1697 if pending.insert_extra_newline {
1698 new_text = new_text.repeat(2);
1699 }
1700 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1701
1702 let buffer = buffer.read(cx);
1703 self.selections = self
1704 .selections
1705 .iter()
1706 .cloned()
1707 .zip(old_selections)
1708 .map(
1709 |(mut new_selection, (_, end_anchor, _, _, insert_extra_newline))| {
1710 let mut cursor = end_anchor.to_point(&buffer);
1711 if insert_extra_newline {
1712 cursor.row -= 1;
1713 cursor.column = buffer.line_len(cursor.row);
1714 }
1715 let anchor = buffer.anchor_after(cursor);
1716 new_selection.start = anchor.clone();
1717 new_selection.end = anchor;
1718 new_selection
1719 },
1720 )
1721 .collect();
1722 });
1723
1724 self.request_autoscroll(Autoscroll::Fit, cx);
1725 self.end_transaction(cx);
1726
1727 #[derive(Default)]
1728 struct PendingEdit {
1729 indent: u32,
1730 insert_extra_newline: bool,
1731 delta: isize,
1732 ranges: SmallVec<[Range<usize>; 32]>,
1733 }
1734 }
1735
1736 pub fn insert(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1737 self.start_transaction(cx);
1738
1739 let old_selections = self.local_selections::<usize>(cx);
1740 let selection_anchors = self.buffer.update(cx, |buffer, cx| {
1741 let anchors = {
1742 let snapshot = buffer.read(cx);
1743 old_selections
1744 .iter()
1745 .map(|s| (s.id, s.goal, snapshot.anchor_after(s.end)))
1746 .collect::<Vec<_>>()
1747 };
1748 let edit_ranges = old_selections.iter().map(|s| s.start..s.end);
1749 buffer.edit_with_autoindent(edit_ranges, text, cx);
1750 anchors
1751 });
1752
1753 let selections = {
1754 let snapshot = self.buffer.read(cx).read(cx);
1755 selection_anchors
1756 .into_iter()
1757 .map(|(id, goal, position)| {
1758 let position = position.to_offset(&snapshot);
1759 Selection {
1760 id,
1761 start: position,
1762 end: position,
1763 goal,
1764 reversed: false,
1765 }
1766 })
1767 .collect()
1768 };
1769 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1770 self.end_transaction(cx);
1771 }
1772
1773 fn trigger_completion_on_input(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1774 let selection = self.newest_anchor_selection();
1775 if self
1776 .buffer
1777 .read(cx)
1778 .is_completion_trigger(selection.head(), text, cx)
1779 {
1780 self.show_completions(&ShowCompletions, cx);
1781 } else {
1782 self.hide_context_menu(cx);
1783 }
1784 }
1785
1786 fn autoclose_pairs(&mut self, cx: &mut ViewContext<Self>) {
1787 let selections = self.local_selections::<usize>(cx);
1788 let mut bracket_pair_state = None;
1789 let mut new_selections = None;
1790 self.buffer.update(cx, |buffer, cx| {
1791 let mut snapshot = buffer.snapshot(cx);
1792 let left_biased_selections = selections
1793 .iter()
1794 .map(|selection| Selection {
1795 id: selection.id,
1796 start: snapshot.anchor_before(selection.start),
1797 end: snapshot.anchor_before(selection.end),
1798 reversed: selection.reversed,
1799 goal: selection.goal,
1800 })
1801 .collect::<Vec<_>>();
1802
1803 let autoclose_pair = snapshot.language().and_then(|language| {
1804 let first_selection_start = selections.first().unwrap().start;
1805 let pair = language.brackets().iter().find(|pair| {
1806 snapshot.contains_str_at(
1807 first_selection_start.saturating_sub(pair.start.len()),
1808 &pair.start,
1809 )
1810 });
1811 pair.and_then(|pair| {
1812 let should_autoclose = selections[1..].iter().all(|selection| {
1813 snapshot.contains_str_at(
1814 selection.start.saturating_sub(pair.start.len()),
1815 &pair.start,
1816 )
1817 });
1818
1819 if should_autoclose {
1820 Some(pair.clone())
1821 } else {
1822 None
1823 }
1824 })
1825 });
1826
1827 if let Some(pair) = autoclose_pair {
1828 let selection_ranges = selections
1829 .iter()
1830 .map(|selection| {
1831 let start = selection.start.to_offset(&snapshot);
1832 start..start
1833 })
1834 .collect::<SmallVec<[_; 32]>>();
1835
1836 buffer.edit(selection_ranges, &pair.end, cx);
1837 snapshot = buffer.snapshot(cx);
1838
1839 new_selections = Some(
1840 self.resolve_selections::<usize, _>(left_biased_selections.iter(), &snapshot)
1841 .collect::<Vec<_>>(),
1842 );
1843
1844 if pair.end.len() == 1 {
1845 let mut delta = 0;
1846 bracket_pair_state = Some(BracketPairState {
1847 ranges: selections
1848 .iter()
1849 .map(move |selection| {
1850 let offset = selection.start + delta;
1851 delta += 1;
1852 snapshot.anchor_before(offset)..snapshot.anchor_after(offset)
1853 })
1854 .collect(),
1855 pair,
1856 });
1857 }
1858 }
1859 });
1860
1861 if let Some(new_selections) = new_selections {
1862 self.update_selections(new_selections, None, cx);
1863 }
1864 if let Some(bracket_pair_state) = bracket_pair_state {
1865 self.autoclose_stack.push(bracket_pair_state);
1866 }
1867 }
1868
1869 fn skip_autoclose_end(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
1870 let old_selections = self.local_selections::<usize>(cx);
1871 let autoclose_pair = if let Some(autoclose_pair) = self.autoclose_stack.last() {
1872 autoclose_pair
1873 } else {
1874 return false;
1875 };
1876 if text != autoclose_pair.pair.end {
1877 return false;
1878 }
1879
1880 debug_assert_eq!(old_selections.len(), autoclose_pair.ranges.len());
1881
1882 let buffer = self.buffer.read(cx).snapshot(cx);
1883 if old_selections
1884 .iter()
1885 .zip(autoclose_pair.ranges.iter().map(|r| r.to_offset(&buffer)))
1886 .all(|(selection, autoclose_range)| {
1887 let autoclose_range_end = autoclose_range.end.to_offset(&buffer);
1888 selection.is_empty() && selection.start == autoclose_range_end
1889 })
1890 {
1891 let new_selections = old_selections
1892 .into_iter()
1893 .map(|selection| {
1894 let cursor = selection.start + 1;
1895 Selection {
1896 id: selection.id,
1897 start: cursor,
1898 end: cursor,
1899 reversed: false,
1900 goal: SelectionGoal::None,
1901 }
1902 })
1903 .collect();
1904 self.autoclose_stack.pop();
1905 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1906 true
1907 } else {
1908 false
1909 }
1910 }
1911
1912 fn completion_query(buffer: &MultiBufferSnapshot, position: impl ToOffset) -> Option<String> {
1913 let offset = position.to_offset(buffer);
1914 let (word_range, kind) = buffer.surrounding_word(offset);
1915 if offset > word_range.start && kind == Some(CharKind::Word) {
1916 Some(
1917 buffer
1918 .text_for_range(word_range.start..offset)
1919 .collect::<String>(),
1920 )
1921 } else {
1922 None
1923 }
1924 }
1925
1926 fn show_completions(&mut self, _: &ShowCompletions, cx: &mut ViewContext<Self>) {
1927 let project = if let Some(project) = self.project.clone() {
1928 project
1929 } else {
1930 return;
1931 };
1932
1933 let position = self.newest_anchor_selection().head();
1934 let (buffer, buffer_position) = if let Some(output) = self
1935 .buffer
1936 .read(cx)
1937 .text_anchor_for_position(position.clone(), cx)
1938 {
1939 output
1940 } else {
1941 return;
1942 };
1943
1944 let query = Self::completion_query(&self.buffer.read(cx).read(cx), position.clone());
1945 let completions = project.update(cx, |project, cx| {
1946 project.completions(&buffer, buffer_position.clone(), cx)
1947 });
1948
1949 let id = post_inc(&mut self.next_completion_id);
1950 let task = cx.spawn_weak(|this, mut cx| {
1951 async move {
1952 let completions = completions.await?;
1953 if completions.is_empty() {
1954 return Ok(());
1955 }
1956
1957 let mut menu = CompletionsMenu {
1958 editor_id: this.id(),
1959 id,
1960 initial_position: position,
1961 match_candidates: completions
1962 .iter()
1963 .enumerate()
1964 .map(|(id, completion)| {
1965 StringMatchCandidate::new(
1966 id,
1967 completion.label.text[completion.label.filter_range.clone()].into(),
1968 )
1969 })
1970 .collect(),
1971 buffer,
1972 completions: completions.into(),
1973 matches: Vec::new().into(),
1974 selected_item: 0,
1975 list: Default::default(),
1976 };
1977
1978 menu.filter(query.as_deref(), cx.background()).await;
1979
1980 if let Some(this) = this.upgrade(&cx) {
1981 this.update(&mut cx, |this, cx| {
1982 match this.context_menu.as_ref() {
1983 None => {}
1984 Some(ContextMenu::Completions(prev_menu)) => {
1985 if prev_menu.id > menu.id {
1986 return;
1987 }
1988 }
1989 _ => return,
1990 }
1991
1992 this.completion_tasks.retain(|(id, _)| *id > menu.id);
1993 if this.focused {
1994 this.show_context_menu(ContextMenu::Completions(menu), cx);
1995 }
1996
1997 cx.notify();
1998 });
1999 }
2000 Ok::<_, anyhow::Error>(())
2001 }
2002 .log_err()
2003 });
2004 self.completion_tasks.push((id, task));
2005 }
2006
2007 pub fn confirm_completion(
2008 &mut self,
2009 ConfirmCompletion(completion_ix): &ConfirmCompletion,
2010 cx: &mut ViewContext<Self>,
2011 ) -> Option<Task<Result<()>>> {
2012 use language::ToOffset as _;
2013
2014 let completions_menu = if let ContextMenu::Completions(menu) = self.hide_context_menu(cx)? {
2015 menu
2016 } else {
2017 return None;
2018 };
2019
2020 let mat = completions_menu
2021 .matches
2022 .get(completion_ix.unwrap_or(completions_menu.selected_item))?;
2023 let buffer_handle = completions_menu.buffer;
2024 let completion = completions_menu.completions.get(mat.candidate_id)?;
2025
2026 let snippet;
2027 let text;
2028 if completion.is_snippet() {
2029 snippet = Some(Snippet::parse(&completion.new_text).log_err()?);
2030 text = snippet.as_ref().unwrap().text.clone();
2031 } else {
2032 snippet = None;
2033 text = completion.new_text.clone();
2034 };
2035 let buffer = buffer_handle.read(cx);
2036 let old_range = completion.old_range.to_offset(&buffer);
2037 let old_text = buffer.text_for_range(old_range.clone()).collect::<String>();
2038
2039 let selections = self.local_selections::<usize>(cx);
2040 let newest_selection = self.newest_anchor_selection();
2041 if newest_selection.start.buffer_id != Some(buffer_handle.id()) {
2042 return None;
2043 }
2044
2045 let lookbehind = newest_selection
2046 .start
2047 .text_anchor
2048 .to_offset(buffer)
2049 .saturating_sub(old_range.start);
2050 let lookahead = old_range
2051 .end
2052 .saturating_sub(newest_selection.end.text_anchor.to_offset(buffer));
2053 let mut common_prefix_len = old_text
2054 .bytes()
2055 .zip(text.bytes())
2056 .take_while(|(a, b)| a == b)
2057 .count();
2058
2059 let snapshot = self.buffer.read(cx).snapshot(cx);
2060 let mut ranges = Vec::new();
2061 for selection in &selections {
2062 if snapshot.contains_str_at(selection.start.saturating_sub(lookbehind), &old_text) {
2063 let start = selection.start.saturating_sub(lookbehind);
2064 let end = selection.end + lookahead;
2065 ranges.push(start + common_prefix_len..end);
2066 } else {
2067 common_prefix_len = 0;
2068 ranges.clear();
2069 ranges.extend(selections.iter().map(|s| {
2070 if s.id == newest_selection.id {
2071 old_range.clone()
2072 } else {
2073 s.start..s.end
2074 }
2075 }));
2076 break;
2077 }
2078 }
2079 let text = &text[common_prefix_len..];
2080
2081 self.start_transaction(cx);
2082 if let Some(mut snippet) = snippet {
2083 snippet.text = text.to_string();
2084 for tabstop in snippet.tabstops.iter_mut().flatten() {
2085 tabstop.start -= common_prefix_len as isize;
2086 tabstop.end -= common_prefix_len as isize;
2087 }
2088
2089 self.insert_snippet(&ranges, snippet, cx).log_err();
2090 } else {
2091 self.buffer.update(cx, |buffer, cx| {
2092 buffer.edit_with_autoindent(ranges, text, cx);
2093 });
2094 }
2095 self.end_transaction(cx);
2096
2097 let project = self.project.clone()?;
2098 let apply_edits = project.update(cx, |project, cx| {
2099 project.apply_additional_edits_for_completion(
2100 buffer_handle,
2101 completion.clone(),
2102 true,
2103 cx,
2104 )
2105 });
2106 Some(cx.foreground().spawn(async move {
2107 apply_edits.await?;
2108 Ok(())
2109 }))
2110 }
2111
2112 pub fn toggle_code_actions(
2113 &mut self,
2114 &ToggleCodeActions(deployed_from_indicator): &ToggleCodeActions,
2115 cx: &mut ViewContext<Self>,
2116 ) {
2117 if matches!(
2118 self.context_menu.as_ref(),
2119 Some(ContextMenu::CodeActions(_))
2120 ) {
2121 self.context_menu.take();
2122 cx.notify();
2123 return;
2124 }
2125
2126 let mut task = self.code_actions_task.take();
2127 cx.spawn_weak(|this, mut cx| async move {
2128 while let Some(prev_task) = task {
2129 prev_task.await;
2130 task = this
2131 .upgrade(&cx)
2132 .and_then(|this| this.update(&mut cx, |this, _| this.code_actions_task.take()));
2133 }
2134
2135 if let Some(this) = this.upgrade(&cx) {
2136 this.update(&mut cx, |this, cx| {
2137 if this.focused {
2138 if let Some((buffer, actions)) = this.available_code_actions.clone() {
2139 this.show_context_menu(
2140 ContextMenu::CodeActions(CodeActionsMenu {
2141 editor_id: this.handle.id(),
2142 buffer,
2143 actions,
2144 selected_item: Default::default(),
2145 list: Default::default(),
2146 deployed_from_indicator,
2147 }),
2148 cx,
2149 );
2150 }
2151 }
2152 })
2153 }
2154 Ok::<_, anyhow::Error>(())
2155 })
2156 .detach_and_log_err(cx);
2157 }
2158
2159 pub fn confirm_code_action(
2160 workspace: &mut Workspace,
2161 ConfirmCodeAction(action_ix): &ConfirmCodeAction,
2162 cx: &mut ViewContext<Workspace>,
2163 ) -> Option<Task<Result<()>>> {
2164 let editor = workspace.active_item(cx)?.act_as::<Editor>(cx)?;
2165 let actions_menu = if let ContextMenu::CodeActions(menu) =
2166 editor.update(cx, |editor, cx| editor.hide_context_menu(cx))?
2167 {
2168 menu
2169 } else {
2170 return None;
2171 };
2172 let action_ix = action_ix.unwrap_or(actions_menu.selected_item);
2173 let action = actions_menu.actions.get(action_ix)?.clone();
2174 let title = action.lsp_action.title.clone();
2175 let buffer = actions_menu.buffer;
2176
2177 let apply_code_actions = workspace.project().clone().update(cx, |project, cx| {
2178 project.apply_code_action(buffer, action, true, cx)
2179 });
2180 Some(cx.spawn(|workspace, cx| async move {
2181 let project_transaction = apply_code_actions.await?;
2182 Self::open_project_transaction(editor, workspace, project_transaction, title, cx).await
2183 }))
2184 }
2185
2186 async fn open_project_transaction(
2187 this: ViewHandle<Editor>,
2188 workspace: ViewHandle<Workspace>,
2189 transaction: ProjectTransaction,
2190 title: String,
2191 mut cx: AsyncAppContext,
2192 ) -> Result<()> {
2193 let replica_id = this.read_with(&cx, |this, cx| this.replica_id(cx));
2194
2195 // If the code action's edits are all contained within this editor, then
2196 // avoid opening a new editor to display them.
2197 let mut entries = transaction.0.iter();
2198 if let Some((buffer, transaction)) = entries.next() {
2199 if entries.next().is_none() {
2200 let excerpt = this.read_with(&cx, |editor, cx| {
2201 editor
2202 .buffer()
2203 .read(cx)
2204 .excerpt_containing(editor.newest_anchor_selection().head(), cx)
2205 });
2206 if let Some((excerpted_buffer, excerpt_range)) = excerpt {
2207 if excerpted_buffer == *buffer {
2208 let snapshot = buffer.read_with(&cx, |buffer, _| buffer.snapshot());
2209 let excerpt_range = excerpt_range.to_offset(&snapshot);
2210 if snapshot
2211 .edited_ranges_for_transaction(transaction)
2212 .all(|range| {
2213 excerpt_range.start <= range.start && excerpt_range.end >= range.end
2214 })
2215 {
2216 return Ok(());
2217 }
2218 }
2219 }
2220 }
2221 }
2222
2223 let mut ranges_to_highlight = Vec::new();
2224 let excerpt_buffer = cx.add_model(|cx| {
2225 let mut multibuffer = MultiBuffer::new(replica_id).with_title(title);
2226 for (buffer, transaction) in &transaction.0 {
2227 let snapshot = buffer.read(cx).snapshot();
2228 ranges_to_highlight.extend(
2229 multibuffer.push_excerpts_with_context_lines(
2230 buffer.clone(),
2231 snapshot
2232 .edited_ranges_for_transaction::<usize>(transaction)
2233 .collect(),
2234 1,
2235 cx,
2236 ),
2237 );
2238 }
2239 multibuffer.push_transaction(&transaction.0);
2240 multibuffer
2241 });
2242
2243 workspace.update(&mut cx, |workspace, cx| {
2244 let editor = workspace.open_item(MultiBufferItemHandle(excerpt_buffer), cx);
2245 if let Some(editor) = editor.act_as::<Self>(cx) {
2246 editor.update(cx, |editor, cx| {
2247 let settings = (editor.build_settings)(cx);
2248 editor.highlight_ranges::<Self>(
2249 ranges_to_highlight,
2250 settings.style.highlighted_line_background,
2251 cx,
2252 );
2253 });
2254 }
2255 });
2256
2257 Ok(())
2258 }
2259
2260 fn refresh_code_actions(&mut self, cx: &mut ViewContext<Self>) -> Option<()> {
2261 let project = self.project.as_ref()?;
2262 let buffer = self.buffer.read(cx);
2263 let newest_selection = self.newest_anchor_selection().clone();
2264 let (start_buffer, start) = buffer.text_anchor_for_position(newest_selection.start, cx)?;
2265 let (end_buffer, end) = buffer.text_anchor_for_position(newest_selection.end, cx)?;
2266 if start_buffer != end_buffer {
2267 return None;
2268 }
2269
2270 let actions = project.update(cx, |project, cx| {
2271 project.code_actions(&start_buffer, start..end, cx)
2272 });
2273 self.code_actions_task = Some(cx.spawn_weak(|this, mut cx| async move {
2274 let actions = actions.await;
2275 if let Some(this) = this.upgrade(&cx) {
2276 this.update(&mut cx, |this, cx| {
2277 this.available_code_actions = actions.log_err().and_then(|actions| {
2278 if actions.is_empty() {
2279 None
2280 } else {
2281 Some((start_buffer, actions.into()))
2282 }
2283 });
2284 cx.notify();
2285 })
2286 }
2287 }));
2288 None
2289 }
2290
2291 pub fn render_code_actions_indicator(&self, cx: &mut ViewContext<Self>) -> Option<ElementBox> {
2292 if self.available_code_actions.is_some() {
2293 enum Tag {}
2294 let style = (self.build_settings)(cx).style;
2295 Some(
2296 MouseEventHandler::new::<Tag, _, _, _>(cx.view_id(), cx, |_, _| {
2297 Svg::new("icons/zap.svg")
2298 .with_color(style.code_actions_indicator)
2299 .boxed()
2300 })
2301 .with_cursor_style(CursorStyle::PointingHand)
2302 .with_padding(Padding::uniform(3.))
2303 .on_mouse_down(|cx| {
2304 cx.dispatch_action(ToggleCodeActions(true));
2305 })
2306 .boxed(),
2307 )
2308 } else {
2309 None
2310 }
2311 }
2312
2313 pub fn context_menu_visible(&self) -> bool {
2314 self.context_menu
2315 .as_ref()
2316 .map_or(false, |menu| menu.visible())
2317 }
2318
2319 pub fn render_context_menu(
2320 &self,
2321 cursor_position: DisplayPoint,
2322 cx: &AppContext,
2323 ) -> Option<(DisplayPoint, ElementBox)> {
2324 self.context_menu
2325 .as_ref()
2326 .map(|menu| menu.render(cursor_position, self.build_settings.clone(), cx))
2327 }
2328
2329 fn show_context_menu(&mut self, menu: ContextMenu, cx: &mut ViewContext<Self>) {
2330 if !matches!(menu, ContextMenu::Completions(_)) {
2331 self.completion_tasks.clear();
2332 }
2333 self.context_menu = Some(menu);
2334 cx.notify();
2335 }
2336
2337 fn hide_context_menu(&mut self, cx: &mut ViewContext<Self>) -> Option<ContextMenu> {
2338 cx.notify();
2339 self.completion_tasks.clear();
2340 self.context_menu.take()
2341 }
2342
2343 pub fn insert_snippet(
2344 &mut self,
2345 insertion_ranges: &[Range<usize>],
2346 snippet: Snippet,
2347 cx: &mut ViewContext<Self>,
2348 ) -> Result<()> {
2349 let tabstops = self.buffer.update(cx, |buffer, cx| {
2350 buffer.edit_with_autoindent(insertion_ranges.iter().cloned(), &snippet.text, cx);
2351
2352 let snapshot = &*buffer.read(cx);
2353 let snippet = &snippet;
2354 snippet
2355 .tabstops
2356 .iter()
2357 .map(|tabstop| {
2358 let mut tabstop_ranges = tabstop
2359 .iter()
2360 .flat_map(|tabstop_range| {
2361 let mut delta = 0 as isize;
2362 insertion_ranges.iter().map(move |insertion_range| {
2363 let insertion_start = insertion_range.start as isize + delta;
2364 delta +=
2365 snippet.text.len() as isize - insertion_range.len() as isize;
2366
2367 let start = snapshot.anchor_before(
2368 (insertion_start + tabstop_range.start) as usize,
2369 );
2370 let end = snapshot
2371 .anchor_after((insertion_start + tabstop_range.end) as usize);
2372 start..end
2373 })
2374 })
2375 .collect::<Vec<_>>();
2376 tabstop_ranges
2377 .sort_unstable_by(|a, b| a.start.cmp(&b.start, snapshot).unwrap());
2378 tabstop_ranges
2379 })
2380 .collect::<Vec<_>>()
2381 });
2382
2383 if let Some(tabstop) = tabstops.first() {
2384 self.select_ranges(tabstop.iter().cloned(), Some(Autoscroll::Fit), cx);
2385 self.snippet_stack.push(SnippetState {
2386 active_index: 0,
2387 ranges: tabstops,
2388 });
2389 }
2390
2391 Ok(())
2392 }
2393
2394 pub fn move_to_next_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) -> bool {
2395 self.move_to_snippet_tabstop(Bias::Right, cx)
2396 }
2397
2398 pub fn move_to_prev_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) {
2399 self.move_to_snippet_tabstop(Bias::Left, cx);
2400 }
2401
2402 pub fn move_to_snippet_tabstop(&mut self, bias: Bias, cx: &mut ViewContext<Self>) -> bool {
2403 let buffer = self.buffer.read(cx).snapshot(cx);
2404
2405 if let Some(snippet) = self.snippet_stack.last_mut() {
2406 match bias {
2407 Bias::Left => {
2408 if snippet.active_index > 0 {
2409 snippet.active_index -= 1;
2410 } else {
2411 return false;
2412 }
2413 }
2414 Bias::Right => {
2415 if snippet.active_index + 1 < snippet.ranges.len() {
2416 snippet.active_index += 1;
2417 } else {
2418 return false;
2419 }
2420 }
2421 }
2422 if let Some(current_ranges) = snippet.ranges.get(snippet.active_index) {
2423 let new_selections = current_ranges
2424 .iter()
2425 .map(|new_range| {
2426 let new_range = new_range.to_offset(&buffer);
2427 Selection {
2428 id: post_inc(&mut self.next_selection_id),
2429 start: new_range.start,
2430 end: new_range.end,
2431 reversed: false,
2432 goal: SelectionGoal::None,
2433 }
2434 })
2435 .collect();
2436
2437 // Remove the snippet state when moving to the last tabstop.
2438 if snippet.active_index + 1 == snippet.ranges.len() {
2439 self.snippet_stack.pop();
2440 }
2441
2442 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2443 return true;
2444 }
2445 self.snippet_stack.pop();
2446 }
2447
2448 false
2449 }
2450
2451 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
2452 self.start_transaction(cx);
2453 self.select_all(&SelectAll, cx);
2454 self.insert("", cx);
2455 self.end_transaction(cx);
2456 }
2457
2458 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
2459 self.start_transaction(cx);
2460 let mut selections = self.local_selections::<Point>(cx);
2461 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2462 for selection in &mut selections {
2463 if selection.is_empty() {
2464 let head = selection.head().to_display_point(&display_map);
2465 let cursor = movement::left(&display_map, head)
2466 .unwrap()
2467 .to_point(&display_map);
2468 selection.set_head(cursor);
2469 selection.goal = SelectionGoal::None;
2470 }
2471 }
2472 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2473 self.insert("", cx);
2474 self.end_transaction(cx);
2475 }
2476
2477 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
2478 self.start_transaction(cx);
2479 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2480 let mut selections = self.local_selections::<Point>(cx);
2481 for selection in &mut selections {
2482 if selection.is_empty() {
2483 let head = selection.head().to_display_point(&display_map);
2484 let cursor = movement::right(&display_map, head)
2485 .unwrap()
2486 .to_point(&display_map);
2487 selection.set_head(cursor);
2488 selection.goal = SelectionGoal::None;
2489 }
2490 }
2491 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2492 self.insert(&"", cx);
2493 self.end_transaction(cx);
2494 }
2495
2496 pub fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
2497 if self.move_to_next_snippet_tabstop(cx) {
2498 return;
2499 }
2500
2501 self.start_transaction(cx);
2502 let tab_size = (self.build_settings)(cx).tab_size;
2503 let mut selections = self.local_selections::<Point>(cx);
2504 let mut last_indent = None;
2505 self.buffer.update(cx, |buffer, cx| {
2506 for selection in &mut selections {
2507 if selection.is_empty() {
2508 let char_column = buffer
2509 .read(cx)
2510 .text_for_range(Point::new(selection.start.row, 0)..selection.start)
2511 .flat_map(str::chars)
2512 .count();
2513 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
2514 buffer.edit(
2515 [selection.start..selection.start],
2516 " ".repeat(chars_to_next_tab_stop),
2517 cx,
2518 );
2519 selection.start.column += chars_to_next_tab_stop as u32;
2520 selection.end = selection.start;
2521 } else {
2522 let mut start_row = selection.start.row;
2523 let mut end_row = selection.end.row + 1;
2524
2525 // If a selection ends at the beginning of a line, don't indent
2526 // that last line.
2527 if selection.end.column == 0 {
2528 end_row -= 1;
2529 }
2530
2531 // Avoid re-indenting a row that has already been indented by a
2532 // previous selection, but still update this selection's column
2533 // to reflect that indentation.
2534 if let Some((last_indent_row, last_indent_len)) = last_indent {
2535 if last_indent_row == selection.start.row {
2536 selection.start.column += last_indent_len;
2537 start_row += 1;
2538 }
2539 if last_indent_row == selection.end.row {
2540 selection.end.column += last_indent_len;
2541 }
2542 }
2543
2544 for row in start_row..end_row {
2545 let indent_column = buffer.read(cx).indent_column_for_line(row) as usize;
2546 let columns_to_next_tab_stop = tab_size - (indent_column % tab_size);
2547 let row_start = Point::new(row, 0);
2548 buffer.edit(
2549 [row_start..row_start],
2550 " ".repeat(columns_to_next_tab_stop),
2551 cx,
2552 );
2553
2554 // Update this selection's endpoints to reflect the indentation.
2555 if row == selection.start.row {
2556 selection.start.column += columns_to_next_tab_stop as u32;
2557 }
2558 if row == selection.end.row {
2559 selection.end.column += columns_to_next_tab_stop as u32;
2560 }
2561
2562 last_indent = Some((row, columns_to_next_tab_stop as u32));
2563 }
2564 }
2565 }
2566 });
2567
2568 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2569 self.end_transaction(cx);
2570 }
2571
2572 pub fn outdent(&mut self, _: &Outdent, cx: &mut ViewContext<Self>) {
2573 if !self.snippet_stack.is_empty() {
2574 self.move_to_prev_snippet_tabstop(cx);
2575 return;
2576 }
2577
2578 self.start_transaction(cx);
2579 let tab_size = (self.build_settings)(cx).tab_size;
2580 let selections = self.local_selections::<Point>(cx);
2581 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2582 let mut deletion_ranges = Vec::new();
2583 let mut last_outdent = None;
2584 {
2585 let buffer = self.buffer.read(cx).read(cx);
2586 for selection in &selections {
2587 let mut rows = selection.spanned_rows(false, &display_map);
2588
2589 // Avoid re-outdenting a row that has already been outdented by a
2590 // previous selection.
2591 if let Some(last_row) = last_outdent {
2592 if last_row == rows.start {
2593 rows.start += 1;
2594 }
2595 }
2596
2597 for row in rows {
2598 let column = buffer.indent_column_for_line(row) as usize;
2599 if column > 0 {
2600 let mut deletion_len = (column % tab_size) as u32;
2601 if deletion_len == 0 {
2602 deletion_len = tab_size as u32;
2603 }
2604 deletion_ranges.push(Point::new(row, 0)..Point::new(row, deletion_len));
2605 last_outdent = Some(row);
2606 }
2607 }
2608 }
2609 }
2610 self.buffer.update(cx, |buffer, cx| {
2611 buffer.edit(deletion_ranges, "", cx);
2612 });
2613
2614 self.update_selections(
2615 self.local_selections::<usize>(cx),
2616 Some(Autoscroll::Fit),
2617 cx,
2618 );
2619 self.end_transaction(cx);
2620 }
2621
2622 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
2623 self.start_transaction(cx);
2624
2625 let selections = self.local_selections::<Point>(cx);
2626 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2627 let buffer = self.buffer.read(cx).snapshot(cx);
2628
2629 let mut new_cursors = Vec::new();
2630 let mut edit_ranges = Vec::new();
2631 let mut selections = selections.iter().peekable();
2632 while let Some(selection) = selections.next() {
2633 let mut rows = selection.spanned_rows(false, &display_map);
2634 let goal_display_column = selection.head().to_display_point(&display_map).column();
2635
2636 // Accumulate contiguous regions of rows that we want to delete.
2637 while let Some(next_selection) = selections.peek() {
2638 let next_rows = next_selection.spanned_rows(false, &display_map);
2639 if next_rows.start <= rows.end {
2640 rows.end = next_rows.end;
2641 selections.next().unwrap();
2642 } else {
2643 break;
2644 }
2645 }
2646
2647 let mut edit_start = Point::new(rows.start, 0).to_offset(&buffer);
2648 let edit_end;
2649 let cursor_buffer_row;
2650 if buffer.max_point().row >= rows.end {
2651 // If there's a line after the range, delete the \n from the end of the row range
2652 // and position the cursor on the next line.
2653 edit_end = Point::new(rows.end, 0).to_offset(&buffer);
2654 cursor_buffer_row = rows.end;
2655 } else {
2656 // If there isn't a line after the range, delete the \n from the line before the
2657 // start of the row range and position the cursor there.
2658 edit_start = edit_start.saturating_sub(1);
2659 edit_end = buffer.len();
2660 cursor_buffer_row = rows.start.saturating_sub(1);
2661 }
2662
2663 let mut cursor = Point::new(cursor_buffer_row, 0).to_display_point(&display_map);
2664 *cursor.column_mut() =
2665 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
2666
2667 new_cursors.push((
2668 selection.id,
2669 buffer.anchor_after(cursor.to_point(&display_map)),
2670 ));
2671 edit_ranges.push(edit_start..edit_end);
2672 }
2673
2674 let buffer = self.buffer.update(cx, |buffer, cx| {
2675 buffer.edit(edit_ranges, "", cx);
2676 buffer.snapshot(cx)
2677 });
2678 let new_selections = new_cursors
2679 .into_iter()
2680 .map(|(id, cursor)| {
2681 let cursor = cursor.to_point(&buffer);
2682 Selection {
2683 id,
2684 start: cursor,
2685 end: cursor,
2686 reversed: false,
2687 goal: SelectionGoal::None,
2688 }
2689 })
2690 .collect();
2691 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2692 self.end_transaction(cx);
2693 }
2694
2695 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
2696 self.start_transaction(cx);
2697
2698 let selections = self.local_selections::<Point>(cx);
2699 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2700 let buffer = &display_map.buffer_snapshot;
2701
2702 let mut edits = Vec::new();
2703 let mut selections_iter = selections.iter().peekable();
2704 while let Some(selection) = selections_iter.next() {
2705 // Avoid duplicating the same lines twice.
2706 let mut rows = selection.spanned_rows(false, &display_map);
2707
2708 while let Some(next_selection) = selections_iter.peek() {
2709 let next_rows = next_selection.spanned_rows(false, &display_map);
2710 if next_rows.start <= rows.end - 1 {
2711 rows.end = next_rows.end;
2712 selections_iter.next().unwrap();
2713 } else {
2714 break;
2715 }
2716 }
2717
2718 // Copy the text from the selected row region and splice it at the start of the region.
2719 let start = Point::new(rows.start, 0);
2720 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
2721 let text = buffer
2722 .text_for_range(start..end)
2723 .chain(Some("\n"))
2724 .collect::<String>();
2725 edits.push((start, text, rows.len() as u32));
2726 }
2727
2728 self.buffer.update(cx, |buffer, cx| {
2729 for (point, text, _) in edits.into_iter().rev() {
2730 buffer.edit(Some(point..point), text, cx);
2731 }
2732 });
2733
2734 self.request_autoscroll(Autoscroll::Fit, cx);
2735 self.end_transaction(cx);
2736 }
2737
2738 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
2739 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2740 let buffer = self.buffer.read(cx).snapshot(cx);
2741
2742 let mut edits = Vec::new();
2743 let mut unfold_ranges = Vec::new();
2744 let mut refold_ranges = Vec::new();
2745
2746 let selections = self.local_selections::<Point>(cx);
2747 let mut selections = selections.iter().peekable();
2748 let mut contiguous_row_selections = Vec::new();
2749 let mut new_selections = Vec::new();
2750
2751 while let Some(selection) = selections.next() {
2752 // Find all the selections that span a contiguous row range
2753 contiguous_row_selections.push(selection.clone());
2754 let start_row = selection.start.row;
2755 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
2756 display_map.next_line_boundary(selection.end).0.row + 1
2757 } else {
2758 selection.end.row
2759 };
2760
2761 while let Some(next_selection) = selections.peek() {
2762 if next_selection.start.row <= end_row {
2763 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
2764 display_map.next_line_boundary(next_selection.end).0.row + 1
2765 } else {
2766 next_selection.end.row
2767 };
2768 contiguous_row_selections.push(selections.next().unwrap().clone());
2769 } else {
2770 break;
2771 }
2772 }
2773
2774 // Move the text spanned by the row range to be before the line preceding the row range
2775 if start_row > 0 {
2776 let range_to_move = Point::new(start_row - 1, buffer.line_len(start_row - 1))
2777 ..Point::new(end_row - 1, buffer.line_len(end_row - 1));
2778 let insertion_point = display_map
2779 .prev_line_boundary(Point::new(start_row - 1, 0))
2780 .0;
2781
2782 // Don't move lines across excerpts
2783 if buffer
2784 .excerpt_boundaries_in_range((
2785 Bound::Excluded(insertion_point),
2786 Bound::Included(range_to_move.end),
2787 ))
2788 .next()
2789 .is_none()
2790 {
2791 let text = buffer
2792 .text_for_range(range_to_move.clone())
2793 .flat_map(|s| s.chars())
2794 .skip(1)
2795 .chain(['\n'])
2796 .collect::<String>();
2797
2798 edits.push((
2799 buffer.anchor_after(range_to_move.start)
2800 ..buffer.anchor_before(range_to_move.end),
2801 String::new(),
2802 ));
2803 let insertion_anchor = buffer.anchor_after(insertion_point);
2804 edits.push((insertion_anchor.clone()..insertion_anchor, text));
2805
2806 let row_delta = range_to_move.start.row - insertion_point.row + 1;
2807
2808 // Move selections up
2809 new_selections.extend(contiguous_row_selections.drain(..).map(
2810 |mut selection| {
2811 selection.start.row -= row_delta;
2812 selection.end.row -= row_delta;
2813 selection
2814 },
2815 ));
2816
2817 // Move folds up
2818 unfold_ranges.push(range_to_move.clone());
2819 for fold in display_map.folds_in_range(
2820 buffer.anchor_before(range_to_move.start)
2821 ..buffer.anchor_after(range_to_move.end),
2822 ) {
2823 let mut start = fold.start.to_point(&buffer);
2824 let mut end = fold.end.to_point(&buffer);
2825 start.row -= row_delta;
2826 end.row -= row_delta;
2827 refold_ranges.push(start..end);
2828 }
2829 }
2830 }
2831
2832 // If we didn't move line(s), preserve the existing selections
2833 new_selections.extend(contiguous_row_selections.drain(..));
2834 }
2835
2836 self.start_transaction(cx);
2837 self.unfold_ranges(unfold_ranges, cx);
2838 self.buffer.update(cx, |buffer, cx| {
2839 for (range, text) in edits {
2840 buffer.edit([range], text, cx);
2841 }
2842 });
2843 self.fold_ranges(refold_ranges, cx);
2844 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2845 self.end_transaction(cx);
2846 }
2847
2848 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
2849 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2850 let buffer = self.buffer.read(cx).snapshot(cx);
2851
2852 let mut edits = Vec::new();
2853 let mut unfold_ranges = Vec::new();
2854 let mut refold_ranges = Vec::new();
2855
2856 let selections = self.local_selections::<Point>(cx);
2857 let mut selections = selections.iter().peekable();
2858 let mut contiguous_row_selections = Vec::new();
2859 let mut new_selections = Vec::new();
2860
2861 while let Some(selection) = selections.next() {
2862 // Find all the selections that span a contiguous row range
2863 contiguous_row_selections.push(selection.clone());
2864 let start_row = selection.start.row;
2865 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
2866 display_map.next_line_boundary(selection.end).0.row + 1
2867 } else {
2868 selection.end.row
2869 };
2870
2871 while let Some(next_selection) = selections.peek() {
2872 if next_selection.start.row <= end_row {
2873 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
2874 display_map.next_line_boundary(next_selection.end).0.row + 1
2875 } else {
2876 next_selection.end.row
2877 };
2878 contiguous_row_selections.push(selections.next().unwrap().clone());
2879 } else {
2880 break;
2881 }
2882 }
2883
2884 // Move the text spanned by the row range to be after the last line of the row range
2885 if end_row <= buffer.max_point().row {
2886 let range_to_move = Point::new(start_row, 0)..Point::new(end_row, 0);
2887 let insertion_point = display_map.next_line_boundary(Point::new(end_row, 0)).0;
2888
2889 // Don't move lines across excerpt boundaries
2890 if buffer
2891 .excerpt_boundaries_in_range((
2892 Bound::Excluded(range_to_move.start),
2893 Bound::Included(insertion_point),
2894 ))
2895 .next()
2896 .is_none()
2897 {
2898 let mut text = String::from("\n");
2899 text.extend(buffer.text_for_range(range_to_move.clone()));
2900 text.pop(); // Drop trailing newline
2901 edits.push((
2902 buffer.anchor_after(range_to_move.start)
2903 ..buffer.anchor_before(range_to_move.end),
2904 String::new(),
2905 ));
2906 let insertion_anchor = buffer.anchor_after(insertion_point);
2907 edits.push((insertion_anchor.clone()..insertion_anchor, text));
2908
2909 let row_delta = insertion_point.row - range_to_move.end.row + 1;
2910
2911 // Move selections down
2912 new_selections.extend(contiguous_row_selections.drain(..).map(
2913 |mut selection| {
2914 selection.start.row += row_delta;
2915 selection.end.row += row_delta;
2916 selection
2917 },
2918 ));
2919
2920 // Move folds down
2921 unfold_ranges.push(range_to_move.clone());
2922 for fold in display_map.folds_in_range(
2923 buffer.anchor_before(range_to_move.start)
2924 ..buffer.anchor_after(range_to_move.end),
2925 ) {
2926 let mut start = fold.start.to_point(&buffer);
2927 let mut end = fold.end.to_point(&buffer);
2928 start.row += row_delta;
2929 end.row += row_delta;
2930 refold_ranges.push(start..end);
2931 }
2932 }
2933 }
2934
2935 // If we didn't move line(s), preserve the existing selections
2936 new_selections.extend(contiguous_row_selections.drain(..));
2937 }
2938
2939 self.start_transaction(cx);
2940 self.unfold_ranges(unfold_ranges, cx);
2941 self.buffer.update(cx, |buffer, cx| {
2942 for (range, text) in edits {
2943 buffer.edit([range], text, cx);
2944 }
2945 });
2946 self.fold_ranges(refold_ranges, cx);
2947 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2948 self.end_transaction(cx);
2949 }
2950
2951 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
2952 self.start_transaction(cx);
2953 let mut text = String::new();
2954 let mut selections = self.local_selections::<Point>(cx);
2955 let mut clipboard_selections = Vec::with_capacity(selections.len());
2956 {
2957 let buffer = self.buffer.read(cx).read(cx);
2958 let max_point = buffer.max_point();
2959 for selection in &mut selections {
2960 let is_entire_line = selection.is_empty();
2961 if is_entire_line {
2962 selection.start = Point::new(selection.start.row, 0);
2963 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
2964 selection.goal = SelectionGoal::None;
2965 }
2966 let mut len = 0;
2967 for chunk in buffer.text_for_range(selection.start..selection.end) {
2968 text.push_str(chunk);
2969 len += chunk.len();
2970 }
2971 clipboard_selections.push(ClipboardSelection {
2972 len,
2973 is_entire_line,
2974 });
2975 }
2976 }
2977 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2978 self.insert("", cx);
2979 self.end_transaction(cx);
2980
2981 cx.as_mut()
2982 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
2983 }
2984
2985 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
2986 let selections = self.local_selections::<Point>(cx);
2987 let mut text = String::new();
2988 let mut clipboard_selections = Vec::with_capacity(selections.len());
2989 {
2990 let buffer = self.buffer.read(cx).read(cx);
2991 let max_point = buffer.max_point();
2992 for selection in selections.iter() {
2993 let mut start = selection.start;
2994 let mut end = selection.end;
2995 let is_entire_line = selection.is_empty();
2996 if is_entire_line {
2997 start = Point::new(start.row, 0);
2998 end = cmp::min(max_point, Point::new(start.row + 1, 0));
2999 }
3000 let mut len = 0;
3001 for chunk in buffer.text_for_range(start..end) {
3002 text.push_str(chunk);
3003 len += chunk.len();
3004 }
3005 clipboard_selections.push(ClipboardSelection {
3006 len,
3007 is_entire_line,
3008 });
3009 }
3010 }
3011
3012 cx.as_mut()
3013 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
3014 }
3015
3016 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
3017 if let Some(item) = cx.as_mut().read_from_clipboard() {
3018 let clipboard_text = item.text();
3019 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
3020 let mut selections = self.local_selections::<usize>(cx);
3021 let all_selections_were_entire_line =
3022 clipboard_selections.iter().all(|s| s.is_entire_line);
3023 if clipboard_selections.len() != selections.len() {
3024 clipboard_selections.clear();
3025 }
3026
3027 let mut delta = 0_isize;
3028 let mut start_offset = 0;
3029 for (i, selection) in selections.iter_mut().enumerate() {
3030 let to_insert;
3031 let entire_line;
3032 if let Some(clipboard_selection) = clipboard_selections.get(i) {
3033 let end_offset = start_offset + clipboard_selection.len;
3034 to_insert = &clipboard_text[start_offset..end_offset];
3035 entire_line = clipboard_selection.is_entire_line;
3036 start_offset = end_offset
3037 } else {
3038 to_insert = clipboard_text.as_str();
3039 entire_line = all_selections_were_entire_line;
3040 }
3041
3042 selection.start = (selection.start as isize + delta) as usize;
3043 selection.end = (selection.end as isize + delta) as usize;
3044
3045 self.buffer.update(cx, |buffer, cx| {
3046 // If the corresponding selection was empty when this slice of the
3047 // clipboard text was written, then the entire line containing the
3048 // selection was copied. If this selection is also currently empty,
3049 // then paste the line before the current line of the buffer.
3050 let range = if selection.is_empty() && entire_line {
3051 let column = selection.start.to_point(&buffer.read(cx)).column as usize;
3052 let line_start = selection.start - column;
3053 line_start..line_start
3054 } else {
3055 selection.start..selection.end
3056 };
3057
3058 delta += to_insert.len() as isize - range.len() as isize;
3059 buffer.edit([range], to_insert, cx);
3060 selection.start += to_insert.len();
3061 selection.end = selection.start;
3062 });
3063 }
3064 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3065 } else {
3066 self.insert(clipboard_text, cx);
3067 }
3068 }
3069 }
3070
3071 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
3072 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
3073 if let Some((selections, _)) = self.selection_history.get(&tx_id).cloned() {
3074 self.set_selections(selections, None, cx);
3075 }
3076 self.request_autoscroll(Autoscroll::Fit, cx);
3077 }
3078 }
3079
3080 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
3081 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
3082 if let Some((_, Some(selections))) = self.selection_history.get(&tx_id).cloned() {
3083 self.set_selections(selections, None, cx);
3084 }
3085 self.request_autoscroll(Autoscroll::Fit, cx);
3086 }
3087 }
3088
3089 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
3090 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3091 let mut selections = self.local_selections::<Point>(cx);
3092 for selection in &mut selections {
3093 let start = selection.start.to_display_point(&display_map);
3094 let end = selection.end.to_display_point(&display_map);
3095
3096 if start != end {
3097 selection.end = selection.start.clone();
3098 } else {
3099 let cursor = movement::left(&display_map, start)
3100 .unwrap()
3101 .to_point(&display_map);
3102 selection.start = cursor.clone();
3103 selection.end = cursor;
3104 }
3105 selection.reversed = false;
3106 selection.goal = SelectionGoal::None;
3107 }
3108 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3109 }
3110
3111 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
3112 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3113 let mut selections = self.local_selections::<Point>(cx);
3114 for selection in &mut selections {
3115 let head = selection.head().to_display_point(&display_map);
3116 let cursor = movement::left(&display_map, head)
3117 .unwrap()
3118 .to_point(&display_map);
3119 selection.set_head(cursor);
3120 selection.goal = SelectionGoal::None;
3121 }
3122 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3123 }
3124
3125 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
3126 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3127 let mut selections = self.local_selections::<Point>(cx);
3128 for selection in &mut selections {
3129 let start = selection.start.to_display_point(&display_map);
3130 let end = selection.end.to_display_point(&display_map);
3131
3132 if start != end {
3133 selection.start = selection.end.clone();
3134 } else {
3135 let cursor = movement::right(&display_map, end)
3136 .unwrap()
3137 .to_point(&display_map);
3138 selection.start = cursor;
3139 selection.end = cursor;
3140 }
3141 selection.reversed = false;
3142 selection.goal = SelectionGoal::None;
3143 }
3144 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3145 }
3146
3147 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
3148 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3149 let mut selections = self.local_selections::<Point>(cx);
3150 for selection in &mut selections {
3151 let head = selection.head().to_display_point(&display_map);
3152 let cursor = movement::right(&display_map, head)
3153 .unwrap()
3154 .to_point(&display_map);
3155 selection.set_head(cursor);
3156 selection.goal = SelectionGoal::None;
3157 }
3158 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3159 }
3160
3161 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
3162 if let Some(context_menu) = self.context_menu.as_mut() {
3163 if context_menu.select_prev(cx) {
3164 return;
3165 }
3166 }
3167
3168 if matches!(self.mode, EditorMode::SingleLine) {
3169 cx.propagate_action();
3170 return;
3171 }
3172
3173 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3174 let mut selections = self.local_selections::<Point>(cx);
3175 for selection in &mut selections {
3176 let start = selection.start.to_display_point(&display_map);
3177 let end = selection.end.to_display_point(&display_map);
3178 if start != end {
3179 selection.goal = SelectionGoal::None;
3180 }
3181
3182 let (start, goal) = movement::up(&display_map, start, selection.goal).unwrap();
3183 let cursor = start.to_point(&display_map);
3184 selection.start = cursor;
3185 selection.end = cursor;
3186 selection.goal = goal;
3187 selection.reversed = false;
3188 }
3189 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3190 }
3191
3192 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
3193 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3194 let mut selections = self.local_selections::<Point>(cx);
3195 for selection in &mut selections {
3196 let head = selection.head().to_display_point(&display_map);
3197 let (head, goal) = movement::up(&display_map, head, selection.goal).unwrap();
3198 let cursor = head.to_point(&display_map);
3199 selection.set_head(cursor);
3200 selection.goal = goal;
3201 }
3202 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3203 }
3204
3205 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
3206 if let Some(context_menu) = self.context_menu.as_mut() {
3207 if context_menu.select_next(cx) {
3208 return;
3209 }
3210 }
3211
3212 if matches!(self.mode, EditorMode::SingleLine) {
3213 cx.propagate_action();
3214 return;
3215 }
3216
3217 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3218 let mut selections = self.local_selections::<Point>(cx);
3219 for selection in &mut selections {
3220 let start = selection.start.to_display_point(&display_map);
3221 let end = selection.end.to_display_point(&display_map);
3222 if start != end {
3223 selection.goal = SelectionGoal::None;
3224 }
3225
3226 let (start, goal) = movement::down(&display_map, end, selection.goal).unwrap();
3227 let cursor = start.to_point(&display_map);
3228 selection.start = cursor;
3229 selection.end = cursor;
3230 selection.goal = goal;
3231 selection.reversed = false;
3232 }
3233 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3234 }
3235
3236 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
3237 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3238 let mut selections = self.local_selections::<Point>(cx);
3239 for selection in &mut selections {
3240 let head = selection.head().to_display_point(&display_map);
3241 let (head, goal) = movement::down(&display_map, head, selection.goal).unwrap();
3242 let cursor = head.to_point(&display_map);
3243 selection.set_head(cursor);
3244 selection.goal = goal;
3245 }
3246 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3247 }
3248
3249 pub fn move_to_previous_word_boundary(
3250 &mut self,
3251 _: &MoveToPreviousWordBoundary,
3252 cx: &mut ViewContext<Self>,
3253 ) {
3254 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3255 let mut selections = self.local_selections::<Point>(cx);
3256 for selection in &mut selections {
3257 let head = selection.head().to_display_point(&display_map);
3258 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3259 selection.start = cursor.clone();
3260 selection.end = cursor;
3261 selection.reversed = false;
3262 selection.goal = SelectionGoal::None;
3263 }
3264 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3265 }
3266
3267 pub fn select_to_previous_word_boundary(
3268 &mut self,
3269 _: &SelectToPreviousWordBoundary,
3270 cx: &mut ViewContext<Self>,
3271 ) {
3272 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3273 let mut selections = self.local_selections::<Point>(cx);
3274 for selection in &mut selections {
3275 let head = selection.head().to_display_point(&display_map);
3276 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3277 selection.set_head(cursor);
3278 selection.goal = SelectionGoal::None;
3279 }
3280 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3281 }
3282
3283 pub fn delete_to_previous_word_boundary(
3284 &mut self,
3285 _: &DeleteToPreviousWordBoundary,
3286 cx: &mut ViewContext<Self>,
3287 ) {
3288 self.start_transaction(cx);
3289 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3290 let mut selections = self.local_selections::<Point>(cx);
3291 for selection in &mut selections {
3292 if selection.is_empty() {
3293 let head = selection.head().to_display_point(&display_map);
3294 let cursor =
3295 movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3296 selection.set_head(cursor);
3297 selection.goal = SelectionGoal::None;
3298 }
3299 }
3300 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3301 self.insert("", cx);
3302 self.end_transaction(cx);
3303 }
3304
3305 pub fn move_to_next_word_boundary(
3306 &mut self,
3307 _: &MoveToNextWordBoundary,
3308 cx: &mut ViewContext<Self>,
3309 ) {
3310 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3311 let mut selections = self.local_selections::<Point>(cx);
3312 for selection in &mut selections {
3313 let head = selection.head().to_display_point(&display_map);
3314 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
3315 selection.start = cursor;
3316 selection.end = cursor;
3317 selection.reversed = false;
3318 selection.goal = SelectionGoal::None;
3319 }
3320 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3321 }
3322
3323 pub fn select_to_next_word_boundary(
3324 &mut self,
3325 _: &SelectToNextWordBoundary,
3326 cx: &mut ViewContext<Self>,
3327 ) {
3328 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3329 let mut selections = self.local_selections::<Point>(cx);
3330 for selection in &mut selections {
3331 let head = selection.head().to_display_point(&display_map);
3332 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
3333 selection.set_head(cursor);
3334 selection.goal = SelectionGoal::None;
3335 }
3336 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3337 }
3338
3339 pub fn delete_to_next_word_boundary(
3340 &mut self,
3341 _: &DeleteToNextWordBoundary,
3342 cx: &mut ViewContext<Self>,
3343 ) {
3344 self.start_transaction(cx);
3345 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3346 let mut selections = self.local_selections::<Point>(cx);
3347 for selection in &mut selections {
3348 if selection.is_empty() {
3349 let head = selection.head().to_display_point(&display_map);
3350 let cursor =
3351 movement::next_word_boundary(&display_map, head).to_point(&display_map);
3352 selection.set_head(cursor);
3353 selection.goal = SelectionGoal::None;
3354 }
3355 }
3356 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3357 self.insert("", cx);
3358 self.end_transaction(cx);
3359 }
3360
3361 pub fn move_to_beginning_of_line(
3362 &mut self,
3363 _: &MoveToBeginningOfLine,
3364 cx: &mut ViewContext<Self>,
3365 ) {
3366 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3367 let mut selections = self.local_selections::<Point>(cx);
3368 for selection in &mut selections {
3369 let head = selection.head().to_display_point(&display_map);
3370 let new_head = movement::line_beginning(&display_map, head, true);
3371 let cursor = new_head.to_point(&display_map);
3372 selection.start = cursor;
3373 selection.end = cursor;
3374 selection.reversed = false;
3375 selection.goal = SelectionGoal::None;
3376 }
3377 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3378 }
3379
3380 pub fn select_to_beginning_of_line(
3381 &mut self,
3382 SelectToBeginningOfLine(stop_at_soft_boundaries): &SelectToBeginningOfLine,
3383 cx: &mut ViewContext<Self>,
3384 ) {
3385 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3386 let mut selections = self.local_selections::<Point>(cx);
3387 for selection in &mut selections {
3388 let head = selection.head().to_display_point(&display_map);
3389 let new_head = movement::line_beginning(&display_map, head, *stop_at_soft_boundaries);
3390 selection.set_head(new_head.to_point(&display_map));
3391 selection.goal = SelectionGoal::None;
3392 }
3393 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3394 }
3395
3396 pub fn delete_to_beginning_of_line(
3397 &mut self,
3398 _: &DeleteToBeginningOfLine,
3399 cx: &mut ViewContext<Self>,
3400 ) {
3401 self.start_transaction(cx);
3402 self.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
3403 self.backspace(&Backspace, cx);
3404 self.end_transaction(cx);
3405 }
3406
3407 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
3408 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3409 let mut selections = self.local_selections::<Point>(cx);
3410 {
3411 for selection in &mut selections {
3412 let head = selection.head().to_display_point(&display_map);
3413 let new_head = movement::line_end(&display_map, head, true);
3414 let anchor = new_head.to_point(&display_map);
3415 selection.start = anchor.clone();
3416 selection.end = anchor;
3417 selection.reversed = false;
3418 selection.goal = SelectionGoal::None;
3419 }
3420 }
3421 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3422 }
3423
3424 pub fn select_to_end_of_line(
3425 &mut self,
3426 SelectToEndOfLine(stop_at_soft_boundaries): &SelectToEndOfLine,
3427 cx: &mut ViewContext<Self>,
3428 ) {
3429 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3430 let mut selections = self.local_selections::<Point>(cx);
3431 for selection in &mut selections {
3432 let head = selection.head().to_display_point(&display_map);
3433 let new_head = movement::line_end(&display_map, head, *stop_at_soft_boundaries);
3434 selection.set_head(new_head.to_point(&display_map));
3435 selection.goal = SelectionGoal::None;
3436 }
3437 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3438 }
3439
3440 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
3441 self.start_transaction(cx);
3442 self.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3443 self.delete(&Delete, cx);
3444 self.end_transaction(cx);
3445 }
3446
3447 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
3448 self.start_transaction(cx);
3449 self.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3450 self.cut(&Cut, cx);
3451 self.end_transaction(cx);
3452 }
3453
3454 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
3455 if matches!(self.mode, EditorMode::SingleLine) {
3456 cx.propagate_action();
3457 return;
3458 }
3459
3460 let selection = Selection {
3461 id: post_inc(&mut self.next_selection_id),
3462 start: 0,
3463 end: 0,
3464 reversed: false,
3465 goal: SelectionGoal::None,
3466 };
3467 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3468 }
3469
3470 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
3471 let mut selection = self.local_selections::<Point>(cx).last().unwrap().clone();
3472 selection.set_head(Point::zero());
3473 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3474 }
3475
3476 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
3477 if matches!(self.mode, EditorMode::SingleLine) {
3478 cx.propagate_action();
3479 return;
3480 }
3481
3482 let cursor = self.buffer.read(cx).read(cx).len();
3483 let selection = Selection {
3484 id: post_inc(&mut self.next_selection_id),
3485 start: cursor,
3486 end: cursor,
3487 reversed: false,
3488 goal: SelectionGoal::None,
3489 };
3490 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3491 }
3492
3493 pub fn set_nav_history(&mut self, nav_history: Option<ItemNavHistory>) {
3494 self.nav_history = nav_history;
3495 }
3496
3497 pub fn nav_history(&self) -> Option<&ItemNavHistory> {
3498 self.nav_history.as_ref()
3499 }
3500
3501 fn push_to_nav_history(
3502 &self,
3503 position: Anchor,
3504 new_position: Option<Point>,
3505 cx: &mut ViewContext<Self>,
3506 ) {
3507 if let Some(nav_history) = &self.nav_history {
3508 let buffer = self.buffer.read(cx).read(cx);
3509 let offset = position.to_offset(&buffer);
3510 let point = position.to_point(&buffer);
3511 drop(buffer);
3512
3513 if let Some(new_position) = new_position {
3514 let row_delta = (new_position.row as i64 - point.row as i64).abs();
3515 if row_delta < MIN_NAVIGATION_HISTORY_ROW_DELTA {
3516 return;
3517 }
3518 }
3519
3520 nav_history.push(Some(NavigationData {
3521 anchor: position,
3522 offset,
3523 }));
3524 }
3525 }
3526
3527 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
3528 let mut selection = self.local_selections::<usize>(cx).first().unwrap().clone();
3529 selection.set_head(self.buffer.read(cx).read(cx).len());
3530 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3531 }
3532
3533 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
3534 let selection = Selection {
3535 id: post_inc(&mut self.next_selection_id),
3536 start: 0,
3537 end: self.buffer.read(cx).read(cx).len(),
3538 reversed: false,
3539 goal: SelectionGoal::None,
3540 };
3541 self.update_selections(vec![selection], None, cx);
3542 }
3543
3544 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
3545 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3546 let mut selections = self.local_selections::<Point>(cx);
3547 let max_point = display_map.buffer_snapshot.max_point();
3548 for selection in &mut selections {
3549 let rows = selection.spanned_rows(true, &display_map);
3550 selection.start = Point::new(rows.start, 0);
3551 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
3552 selection.reversed = false;
3553 }
3554 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3555 }
3556
3557 pub fn split_selection_into_lines(
3558 &mut self,
3559 _: &SplitSelectionIntoLines,
3560 cx: &mut ViewContext<Self>,
3561 ) {
3562 let mut to_unfold = Vec::new();
3563 let mut new_selections = Vec::new();
3564 {
3565 let selections = self.local_selections::<Point>(cx);
3566 let buffer = self.buffer.read(cx).read(cx);
3567 for selection in selections {
3568 for row in selection.start.row..selection.end.row {
3569 let cursor = Point::new(row, buffer.line_len(row));
3570 new_selections.push(Selection {
3571 id: post_inc(&mut self.next_selection_id),
3572 start: cursor,
3573 end: cursor,
3574 reversed: false,
3575 goal: SelectionGoal::None,
3576 });
3577 }
3578 new_selections.push(Selection {
3579 id: selection.id,
3580 start: selection.end,
3581 end: selection.end,
3582 reversed: false,
3583 goal: SelectionGoal::None,
3584 });
3585 to_unfold.push(selection.start..selection.end);
3586 }
3587 }
3588 self.unfold_ranges(to_unfold, cx);
3589 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3590 }
3591
3592 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
3593 self.add_selection(true, cx);
3594 }
3595
3596 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
3597 self.add_selection(false, cx);
3598 }
3599
3600 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
3601 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3602 let mut selections = self.local_selections::<Point>(cx);
3603 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
3604 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
3605 let range = oldest_selection.display_range(&display_map).sorted();
3606 let columns = cmp::min(range.start.column(), range.end.column())
3607 ..cmp::max(range.start.column(), range.end.column());
3608
3609 selections.clear();
3610 let mut stack = Vec::new();
3611 for row in range.start.row()..=range.end.row() {
3612 if let Some(selection) = self.build_columnar_selection(
3613 &display_map,
3614 row,
3615 &columns,
3616 oldest_selection.reversed,
3617 ) {
3618 stack.push(selection.id);
3619 selections.push(selection);
3620 }
3621 }
3622
3623 if above {
3624 stack.reverse();
3625 }
3626
3627 AddSelectionsState { above, stack }
3628 });
3629
3630 let last_added_selection = *state.stack.last().unwrap();
3631 let mut new_selections = Vec::new();
3632 if above == state.above {
3633 let end_row = if above {
3634 0
3635 } else {
3636 display_map.max_point().row()
3637 };
3638
3639 'outer: for selection in selections {
3640 if selection.id == last_added_selection {
3641 let range = selection.display_range(&display_map).sorted();
3642 debug_assert_eq!(range.start.row(), range.end.row());
3643 let mut row = range.start.row();
3644 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
3645 {
3646 start..end
3647 } else {
3648 cmp::min(range.start.column(), range.end.column())
3649 ..cmp::max(range.start.column(), range.end.column())
3650 };
3651
3652 while row != end_row {
3653 if above {
3654 row -= 1;
3655 } else {
3656 row += 1;
3657 }
3658
3659 if let Some(new_selection) = self.build_columnar_selection(
3660 &display_map,
3661 row,
3662 &columns,
3663 selection.reversed,
3664 ) {
3665 state.stack.push(new_selection.id);
3666 if above {
3667 new_selections.push(new_selection);
3668 new_selections.push(selection);
3669 } else {
3670 new_selections.push(selection);
3671 new_selections.push(new_selection);
3672 }
3673
3674 continue 'outer;
3675 }
3676 }
3677 }
3678
3679 new_selections.push(selection);
3680 }
3681 } else {
3682 new_selections = selections;
3683 new_selections.retain(|s| s.id != last_added_selection);
3684 state.stack.pop();
3685 }
3686
3687 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3688 if state.stack.len() > 1 {
3689 self.add_selections_state = Some(state);
3690 }
3691 }
3692
3693 pub fn select_next(&mut self, action: &SelectNext, cx: &mut ViewContext<Self>) {
3694 let replace_newest = action.0;
3695 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3696 let buffer = &display_map.buffer_snapshot;
3697 let mut selections = self.local_selections::<usize>(cx);
3698 if let Some(mut select_next_state) = self.select_next_state.take() {
3699 let query = &select_next_state.query;
3700 if !select_next_state.done {
3701 let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
3702 let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
3703 let mut next_selected_range = None;
3704
3705 let bytes_after_last_selection =
3706 buffer.bytes_in_range(last_selection.end..buffer.len());
3707 let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
3708 let query_matches = query
3709 .stream_find_iter(bytes_after_last_selection)
3710 .map(|result| (last_selection.end, result))
3711 .chain(
3712 query
3713 .stream_find_iter(bytes_before_first_selection)
3714 .map(|result| (0, result)),
3715 );
3716 for (start_offset, query_match) in query_matches {
3717 let query_match = query_match.unwrap(); // can only fail due to I/O
3718 let offset_range =
3719 start_offset + query_match.start()..start_offset + query_match.end();
3720 let display_range = offset_range.start.to_display_point(&display_map)
3721 ..offset_range.end.to_display_point(&display_map);
3722
3723 if !select_next_state.wordwise
3724 || (!movement::is_inside_word(&display_map, display_range.start)
3725 && !movement::is_inside_word(&display_map, display_range.end))
3726 {
3727 next_selected_range = Some(offset_range);
3728 break;
3729 }
3730 }
3731
3732 if let Some(next_selected_range) = next_selected_range {
3733 if replace_newest {
3734 if let Some(newest_id) =
3735 selections.iter().max_by_key(|s| s.id).map(|s| s.id)
3736 {
3737 selections.retain(|s| s.id != newest_id);
3738 }
3739 }
3740 selections.push(Selection {
3741 id: post_inc(&mut self.next_selection_id),
3742 start: next_selected_range.start,
3743 end: next_selected_range.end,
3744 reversed: false,
3745 goal: SelectionGoal::None,
3746 });
3747 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3748 } else {
3749 select_next_state.done = true;
3750 }
3751 }
3752
3753 self.select_next_state = Some(select_next_state);
3754 } else if selections.len() == 1 {
3755 let selection = selections.last_mut().unwrap();
3756 if selection.start == selection.end {
3757 let word_range = movement::surrounding_word(
3758 &display_map,
3759 selection.start.to_display_point(&display_map),
3760 );
3761 selection.start = word_range.start.to_offset(&display_map, Bias::Left);
3762 selection.end = word_range.end.to_offset(&display_map, Bias::Left);
3763 selection.goal = SelectionGoal::None;
3764 selection.reversed = false;
3765
3766 let query = buffer
3767 .text_for_range(selection.start..selection.end)
3768 .collect::<String>();
3769 let select_state = SelectNextState {
3770 query: AhoCorasick::new_auto_configured(&[query]),
3771 wordwise: true,
3772 done: false,
3773 };
3774 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3775 self.select_next_state = Some(select_state);
3776 } else {
3777 let query = buffer
3778 .text_for_range(selection.start..selection.end)
3779 .collect::<String>();
3780 self.select_next_state = Some(SelectNextState {
3781 query: AhoCorasick::new_auto_configured(&[query]),
3782 wordwise: false,
3783 done: false,
3784 });
3785 self.select_next(action, cx);
3786 }
3787 }
3788 }
3789
3790 pub fn toggle_comments(&mut self, _: &ToggleComments, cx: &mut ViewContext<Self>) {
3791 // Get the line comment prefix. Split its trailing whitespace into a separate string,
3792 // as that portion won't be used for detecting if a line is a comment.
3793 let full_comment_prefix =
3794 if let Some(prefix) = self.language(cx).and_then(|l| l.line_comment_prefix()) {
3795 prefix.to_string()
3796 } else {
3797 return;
3798 };
3799 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
3800 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
3801
3802 self.start_transaction(cx);
3803 let mut selections = self.local_selections::<Point>(cx);
3804 let mut all_selection_lines_are_comments = true;
3805 let mut edit_ranges = Vec::new();
3806 let mut last_toggled_row = None;
3807 self.buffer.update(cx, |buffer, cx| {
3808 for selection in &mut selections {
3809 edit_ranges.clear();
3810 let snapshot = buffer.snapshot(cx);
3811
3812 let end_row =
3813 if selection.end.row > selection.start.row && selection.end.column == 0 {
3814 selection.end.row
3815 } else {
3816 selection.end.row + 1
3817 };
3818
3819 for row in selection.start.row..end_row {
3820 // If multiple selections contain a given row, avoid processing that
3821 // row more than once.
3822 if last_toggled_row == Some(row) {
3823 continue;
3824 } else {
3825 last_toggled_row = Some(row);
3826 }
3827
3828 if snapshot.is_line_blank(row) {
3829 continue;
3830 }
3831
3832 let start = Point::new(row, snapshot.indent_column_for_line(row));
3833 let mut line_bytes = snapshot
3834 .bytes_in_range(start..snapshot.max_point())
3835 .flatten()
3836 .copied();
3837
3838 // If this line currently begins with the line comment prefix, then record
3839 // the range containing the prefix.
3840 if all_selection_lines_are_comments
3841 && line_bytes
3842 .by_ref()
3843 .take(comment_prefix.len())
3844 .eq(comment_prefix.bytes())
3845 {
3846 // Include any whitespace that matches the comment prefix.
3847 let matching_whitespace_len = line_bytes
3848 .zip(comment_prefix_whitespace.bytes())
3849 .take_while(|(a, b)| a == b)
3850 .count() as u32;
3851 let end = Point::new(
3852 row,
3853 start.column + comment_prefix.len() as u32 + matching_whitespace_len,
3854 );
3855 edit_ranges.push(start..end);
3856 }
3857 // If this line does not begin with the line comment prefix, then record
3858 // the position where the prefix should be inserted.
3859 else {
3860 all_selection_lines_are_comments = false;
3861 edit_ranges.push(start..start);
3862 }
3863 }
3864
3865 if !edit_ranges.is_empty() {
3866 if all_selection_lines_are_comments {
3867 buffer.edit(edit_ranges.iter().cloned(), "", cx);
3868 } else {
3869 let min_column = edit_ranges.iter().map(|r| r.start.column).min().unwrap();
3870 let edit_ranges = edit_ranges.iter().map(|range| {
3871 let position = Point::new(range.start.row, min_column);
3872 position..position
3873 });
3874 buffer.edit(edit_ranges, &full_comment_prefix, cx);
3875 }
3876 }
3877 }
3878 });
3879
3880 self.update_selections(
3881 self.local_selections::<usize>(cx),
3882 Some(Autoscroll::Fit),
3883 cx,
3884 );
3885 self.end_transaction(cx);
3886 }
3887
3888 pub fn select_larger_syntax_node(
3889 &mut self,
3890 _: &SelectLargerSyntaxNode,
3891 cx: &mut ViewContext<Self>,
3892 ) {
3893 let old_selections = self.local_selections::<usize>(cx).into_boxed_slice();
3894 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3895 let buffer = self.buffer.read(cx).snapshot(cx);
3896
3897 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
3898 let mut selected_larger_node = false;
3899 let new_selections = old_selections
3900 .iter()
3901 .map(|selection| {
3902 let old_range = selection.start..selection.end;
3903 let mut new_range = old_range.clone();
3904 while let Some(containing_range) =
3905 buffer.range_for_syntax_ancestor(new_range.clone())
3906 {
3907 new_range = containing_range;
3908 if !display_map.intersects_fold(new_range.start)
3909 && !display_map.intersects_fold(new_range.end)
3910 {
3911 break;
3912 }
3913 }
3914
3915 selected_larger_node |= new_range != old_range;
3916 Selection {
3917 id: selection.id,
3918 start: new_range.start,
3919 end: new_range.end,
3920 goal: SelectionGoal::None,
3921 reversed: selection.reversed,
3922 }
3923 })
3924 .collect::<Vec<_>>();
3925
3926 if selected_larger_node {
3927 stack.push(old_selections);
3928 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3929 }
3930 self.select_larger_syntax_node_stack = stack;
3931 }
3932
3933 pub fn select_smaller_syntax_node(
3934 &mut self,
3935 _: &SelectSmallerSyntaxNode,
3936 cx: &mut ViewContext<Self>,
3937 ) {
3938 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
3939 if let Some(selections) = stack.pop() {
3940 self.update_selections(selections.to_vec(), Some(Autoscroll::Fit), cx);
3941 }
3942 self.select_larger_syntax_node_stack = stack;
3943 }
3944
3945 pub fn move_to_enclosing_bracket(
3946 &mut self,
3947 _: &MoveToEnclosingBracket,
3948 cx: &mut ViewContext<Self>,
3949 ) {
3950 let mut selections = self.local_selections::<usize>(cx);
3951 let buffer = self.buffer.read(cx).snapshot(cx);
3952 for selection in &mut selections {
3953 if let Some((open_range, close_range)) =
3954 buffer.enclosing_bracket_ranges(selection.start..selection.end)
3955 {
3956 let close_range = close_range.to_inclusive();
3957 let destination = if close_range.contains(&selection.start)
3958 && close_range.contains(&selection.end)
3959 {
3960 open_range.end
3961 } else {
3962 *close_range.start()
3963 };
3964 selection.start = destination;
3965 selection.end = destination;
3966 }
3967 }
3968
3969 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3970 }
3971
3972 pub fn show_next_diagnostic(&mut self, _: &ShowNextDiagnostic, cx: &mut ViewContext<Self>) {
3973 let buffer = self.buffer.read(cx).snapshot(cx);
3974 let selection = self.newest_selection::<usize>(&buffer);
3975 let mut active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
3976 active_diagnostics
3977 .primary_range
3978 .to_offset(&buffer)
3979 .to_inclusive()
3980 });
3981 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
3982 if active_primary_range.contains(&selection.head()) {
3983 *active_primary_range.end()
3984 } else {
3985 selection.head()
3986 }
3987 } else {
3988 selection.head()
3989 };
3990
3991 loop {
3992 let next_group = buffer
3993 .diagnostics_in_range::<_, usize>(search_start..buffer.len())
3994 .find_map(|entry| {
3995 if entry.diagnostic.is_primary
3996 && !entry.range.is_empty()
3997 && Some(entry.range.end) != active_primary_range.as_ref().map(|r| *r.end())
3998 {
3999 Some((entry.range, entry.diagnostic.group_id))
4000 } else {
4001 None
4002 }
4003 });
4004
4005 if let Some((primary_range, group_id)) = next_group {
4006 self.activate_diagnostics(group_id, cx);
4007 self.update_selections(
4008 vec![Selection {
4009 id: selection.id,
4010 start: primary_range.start,
4011 end: primary_range.start,
4012 reversed: false,
4013 goal: SelectionGoal::None,
4014 }],
4015 Some(Autoscroll::Center),
4016 cx,
4017 );
4018 break;
4019 } else if search_start == 0 {
4020 break;
4021 } else {
4022 // Cycle around to the start of the buffer, potentially moving back to the start of
4023 // the currently active diagnostic.
4024 search_start = 0;
4025 active_primary_range.take();
4026 }
4027 }
4028 }
4029
4030 pub fn go_to_definition(
4031 workspace: &mut Workspace,
4032 _: &GoToDefinition,
4033 cx: &mut ViewContext<Workspace>,
4034 ) {
4035 let active_item = workspace.active_item(cx);
4036 let editor_handle = if let Some(editor) = active_item
4037 .as_ref()
4038 .and_then(|item| item.act_as::<Self>(cx))
4039 {
4040 editor
4041 } else {
4042 return;
4043 };
4044
4045 let editor = editor_handle.read(cx);
4046 let buffer = editor.buffer.read(cx);
4047 let head = editor.newest_selection::<usize>(&buffer.read(cx)).head();
4048 let (buffer, head) =
4049 if let Some(text_anchor) = editor.buffer.read(cx).text_anchor_for_position(head, cx) {
4050 text_anchor
4051 } else {
4052 return;
4053 };
4054
4055 let definitions = workspace
4056 .project()
4057 .update(cx, |project, cx| project.definition(&buffer, head, cx));
4058 cx.spawn(|workspace, mut cx| async move {
4059 let definitions = definitions.await?;
4060 workspace.update(&mut cx, |workspace, cx| {
4061 for definition in definitions {
4062 let range = definition
4063 .target_range
4064 .to_offset(definition.target_buffer.read(cx));
4065 let target_editor_handle = workspace
4066 .open_item(BufferItemHandle(definition.target_buffer), cx)
4067 .downcast::<Self>()
4068 .unwrap();
4069
4070 target_editor_handle.update(cx, |target_editor, cx| {
4071 // When selecting a definition in a different buffer, disable the nav history
4072 // to avoid creating a history entry at the previous cursor location.
4073 let disabled_history = if editor_handle == target_editor_handle {
4074 None
4075 } else {
4076 target_editor.nav_history.take()
4077 };
4078 target_editor.select_ranges([range], Some(Autoscroll::Center), cx);
4079 if disabled_history.is_some() {
4080 target_editor.nav_history = disabled_history;
4081 }
4082 });
4083 }
4084 });
4085
4086 Ok::<(), anyhow::Error>(())
4087 })
4088 .detach_and_log_err(cx);
4089 }
4090
4091 fn rename(&mut self, _: &Rename, cx: &mut ViewContext<Self>) -> Option<Task<Result<()>>> {
4092 use language::ToOffset as _;
4093
4094 let project = self.project.clone()?;
4095 let position = self.newest_anchor_selection().head();
4096 let (buffer, buffer_position) = self
4097 .buffer
4098 .read(cx)
4099 .text_anchor_for_position(position.clone(), cx)?;
4100 let snapshot = buffer.read(cx).snapshot();
4101 let prepare_rename = project.update(cx, |project, cx| {
4102 project.prepare_rename(buffer.clone(), buffer_position.to_offset(&snapshot), cx)
4103 });
4104
4105 Some(cx.spawn(|this, mut cx| async move {
4106 if let Some(range) = prepare_rename.await? {
4107 let buffer_offset_range = range.to_offset(&snapshot);
4108 let buffer_offset = buffer_position.to_offset(&snapshot);
4109 let lookbehind = buffer_offset.saturating_sub(buffer_offset_range.start);
4110 let lookahead = buffer_offset_range.end.saturating_sub(buffer_offset);
4111
4112 this.update(&mut cx, |this, cx| {
4113 let buffer = this.buffer.read(cx).read(cx);
4114 let offset = position.to_offset(&buffer);
4115 let start = offset - lookbehind;
4116 let end = offset + lookahead;
4117 let highlight_range = buffer.anchor_before(start)..buffer.anchor_after(end);
4118 drop(buffer);
4119
4120 this.select_ranges([start..end], None, cx);
4121 this.highlight_ranges::<Rename>(vec![highlight_range], Color::red(), cx);
4122 });
4123 }
4124
4125 Ok(())
4126 }))
4127 }
4128
4129 fn confirm_rename(
4130 workspace: &mut Workspace,
4131 _: &ConfirmRename,
4132 cx: &mut ViewContext<Workspace>,
4133 ) -> Option<Task<Result<()>>> {
4134 let editor = workspace.active_item(cx)?.act_as::<Editor>(cx)?;
4135
4136 let (buffer, position, new_name) = editor.update(cx, |editor, cx| {
4137 let range = editor.take_rename_range(cx)?;
4138 let multibuffer = editor.buffer.read(cx);
4139 let (buffer, position) =
4140 multibuffer.text_anchor_for_position(range.start.clone(), cx)?;
4141 let snapshot = multibuffer.read(cx);
4142 let new_name = snapshot.text_for_range(range.clone()).collect::<String>();
4143 Some((buffer, position, new_name))
4144 })?;
4145
4146 let rename = workspace.project().clone().update(cx, |project, cx| {
4147 project.perform_rename(buffer, position, new_name.clone(), cx)
4148 });
4149
4150 Some(cx.spawn(|workspace, cx| async move {
4151 let project_transaction = rename.await?;
4152 Self::open_project_transaction(
4153 editor,
4154 workspace,
4155 project_transaction,
4156 format!("Rename: {}", new_name),
4157 cx,
4158 )
4159 .await
4160 }))
4161 }
4162
4163 fn rename_range(&self) -> Option<&Range<Anchor>> {
4164 self.highlighted_ranges_for_type::<Rename>()
4165 .and_then(|(_, range)| range.last())
4166 }
4167
4168 fn take_rename_range(&mut self, cx: &mut ViewContext<Self>) -> Option<Range<Anchor>> {
4169 self.clear_highlighted_ranges::<Rename>(cx)
4170 .and_then(|(_, mut ranges)| ranges.pop())
4171 }
4172
4173 fn invalidate_rename_range(
4174 &mut self,
4175 buffer: &MultiBufferSnapshot,
4176 cx: &mut ViewContext<Self>,
4177 ) {
4178 if let Some(range) = &self.rename_range() {
4179 if self.selections.len() == 1 {
4180 let head = self.selections[0].head().to_offset(&buffer);
4181 if range.start.to_offset(&buffer) <= head && range.end.to_offset(&buffer) >= head {
4182 return;
4183 }
4184 }
4185 eprintln!("clearing highlight range");
4186 self.clear_highlighted_ranges::<Rename>(cx);
4187 }
4188 }
4189
4190 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
4191 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
4192 let buffer = self.buffer.read(cx).snapshot(cx);
4193 let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
4194 let is_valid = buffer
4195 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone())
4196 .any(|entry| {
4197 entry.diagnostic.is_primary
4198 && !entry.range.is_empty()
4199 && entry.range.start == primary_range_start
4200 && entry.diagnostic.message == active_diagnostics.primary_message
4201 });
4202
4203 if is_valid != active_diagnostics.is_valid {
4204 active_diagnostics.is_valid = is_valid;
4205 let mut new_styles = HashMap::default();
4206 for (block_id, diagnostic) in &active_diagnostics.blocks {
4207 new_styles.insert(
4208 *block_id,
4209 diagnostic_block_renderer(
4210 diagnostic.clone(),
4211 is_valid,
4212 self.build_settings.clone(),
4213 ),
4214 );
4215 }
4216 self.display_map
4217 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
4218 }
4219 }
4220 }
4221
4222 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) {
4223 self.dismiss_diagnostics(cx);
4224 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
4225 let buffer = self.buffer.read(cx).snapshot(cx);
4226
4227 let mut primary_range = None;
4228 let mut primary_message = None;
4229 let mut group_end = Point::zero();
4230 let diagnostic_group = buffer
4231 .diagnostic_group::<Point>(group_id)
4232 .map(|entry| {
4233 if entry.range.end > group_end {
4234 group_end = entry.range.end;
4235 }
4236 if entry.diagnostic.is_primary {
4237 primary_range = Some(entry.range.clone());
4238 primary_message = Some(entry.diagnostic.message.clone());
4239 }
4240 entry
4241 })
4242 .collect::<Vec<_>>();
4243 let primary_range = primary_range.unwrap();
4244 let primary_message = primary_message.unwrap();
4245 let primary_range =
4246 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
4247
4248 let blocks = display_map
4249 .insert_blocks(
4250 diagnostic_group.iter().map(|entry| {
4251 let build_settings = self.build_settings.clone();
4252 let diagnostic = entry.diagnostic.clone();
4253 let message_height = diagnostic.message.lines().count() as u8;
4254
4255 BlockProperties {
4256 position: buffer.anchor_after(entry.range.start),
4257 height: message_height,
4258 render: diagnostic_block_renderer(diagnostic, true, build_settings),
4259 disposition: BlockDisposition::Below,
4260 }
4261 }),
4262 cx,
4263 )
4264 .into_iter()
4265 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
4266 .collect();
4267
4268 Some(ActiveDiagnosticGroup {
4269 primary_range,
4270 primary_message,
4271 blocks,
4272 is_valid: true,
4273 })
4274 });
4275 }
4276
4277 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
4278 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
4279 self.display_map.update(cx, |display_map, cx| {
4280 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
4281 });
4282 cx.notify();
4283 }
4284 }
4285
4286 fn build_columnar_selection(
4287 &mut self,
4288 display_map: &DisplaySnapshot,
4289 row: u32,
4290 columns: &Range<u32>,
4291 reversed: bool,
4292 ) -> Option<Selection<Point>> {
4293 let is_empty = columns.start == columns.end;
4294 let line_len = display_map.line_len(row);
4295 if columns.start < line_len || (is_empty && columns.start == line_len) {
4296 let start = DisplayPoint::new(row, columns.start);
4297 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
4298 Some(Selection {
4299 id: post_inc(&mut self.next_selection_id),
4300 start: start.to_point(display_map),
4301 end: end.to_point(display_map),
4302 reversed,
4303 goal: SelectionGoal::ColumnRange {
4304 start: columns.start,
4305 end: columns.end,
4306 },
4307 })
4308 } else {
4309 None
4310 }
4311 }
4312
4313 pub fn local_selections_in_range(
4314 &self,
4315 range: Range<Anchor>,
4316 display_map: &DisplaySnapshot,
4317 ) -> Vec<Selection<Point>> {
4318 let buffer = &display_map.buffer_snapshot;
4319
4320 let start_ix = match self
4321 .selections
4322 .binary_search_by(|probe| probe.end.cmp(&range.start, &buffer).unwrap())
4323 {
4324 Ok(ix) | Err(ix) => ix,
4325 };
4326 let end_ix = match self
4327 .selections
4328 .binary_search_by(|probe| probe.start.cmp(&range.end, &buffer).unwrap())
4329 {
4330 Ok(ix) => ix + 1,
4331 Err(ix) => ix,
4332 };
4333
4334 fn point_selection(
4335 selection: &Selection<Anchor>,
4336 buffer: &MultiBufferSnapshot,
4337 ) -> Selection<Point> {
4338 let start = selection.start.to_point(&buffer);
4339 let end = selection.end.to_point(&buffer);
4340 Selection {
4341 id: selection.id,
4342 start,
4343 end,
4344 reversed: selection.reversed,
4345 goal: selection.goal,
4346 }
4347 }
4348
4349 self.selections[start_ix..end_ix]
4350 .iter()
4351 .chain(
4352 self.pending_selection
4353 .as_ref()
4354 .map(|pending| &pending.selection),
4355 )
4356 .map(|s| point_selection(s, &buffer))
4357 .collect()
4358 }
4359
4360 pub fn local_selections<'a, D>(&self, cx: &'a AppContext) -> Vec<Selection<D>>
4361 where
4362 D: 'a + TextDimension + Ord + Sub<D, Output = D>,
4363 {
4364 let buffer = self.buffer.read(cx).snapshot(cx);
4365 let mut selections = self
4366 .resolve_selections::<D, _>(self.selections.iter(), &buffer)
4367 .peekable();
4368
4369 let mut pending_selection = self.pending_selection::<D>(&buffer);
4370
4371 iter::from_fn(move || {
4372 if let Some(pending) = pending_selection.as_mut() {
4373 while let Some(next_selection) = selections.peek() {
4374 if pending.start <= next_selection.end && pending.end >= next_selection.start {
4375 let next_selection = selections.next().unwrap();
4376 if next_selection.start < pending.start {
4377 pending.start = next_selection.start;
4378 }
4379 if next_selection.end > pending.end {
4380 pending.end = next_selection.end;
4381 }
4382 } else if next_selection.end < pending.start {
4383 return selections.next();
4384 } else {
4385 break;
4386 }
4387 }
4388
4389 pending_selection.take()
4390 } else {
4391 selections.next()
4392 }
4393 })
4394 .collect()
4395 }
4396
4397 fn resolve_selections<'a, D, I>(
4398 &self,
4399 selections: I,
4400 snapshot: &MultiBufferSnapshot,
4401 ) -> impl 'a + Iterator<Item = Selection<D>>
4402 where
4403 D: TextDimension + Ord + Sub<D, Output = D>,
4404 I: 'a + IntoIterator<Item = &'a Selection<Anchor>>,
4405 {
4406 let (to_summarize, selections) = selections.into_iter().tee();
4407 let mut summaries = snapshot
4408 .summaries_for_anchors::<D, _>(to_summarize.flat_map(|s| [&s.start, &s.end]))
4409 .into_iter();
4410 selections.map(move |s| Selection {
4411 id: s.id,
4412 start: summaries.next().unwrap(),
4413 end: summaries.next().unwrap(),
4414 reversed: s.reversed,
4415 goal: s.goal,
4416 })
4417 }
4418
4419 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4420 &self,
4421 snapshot: &MultiBufferSnapshot,
4422 ) -> Option<Selection<D>> {
4423 self.pending_selection
4424 .as_ref()
4425 .map(|pending| self.resolve_selection(&pending.selection, &snapshot))
4426 }
4427
4428 fn resolve_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4429 &self,
4430 selection: &Selection<Anchor>,
4431 buffer: &MultiBufferSnapshot,
4432 ) -> Selection<D> {
4433 Selection {
4434 id: selection.id,
4435 start: selection.start.summary::<D>(&buffer),
4436 end: selection.end.summary::<D>(&buffer),
4437 reversed: selection.reversed,
4438 goal: selection.goal,
4439 }
4440 }
4441
4442 fn selection_count<'a>(&self) -> usize {
4443 let mut count = self.selections.len();
4444 if self.pending_selection.is_some() {
4445 count += 1;
4446 }
4447 count
4448 }
4449
4450 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4451 &self,
4452 snapshot: &MultiBufferSnapshot,
4453 ) -> Selection<D> {
4454 self.selections
4455 .iter()
4456 .min_by_key(|s| s.id)
4457 .map(|selection| self.resolve_selection(selection, snapshot))
4458 .or_else(|| self.pending_selection(snapshot))
4459 .unwrap()
4460 }
4461
4462 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4463 &self,
4464 snapshot: &MultiBufferSnapshot,
4465 ) -> Selection<D> {
4466 self.resolve_selection(self.newest_anchor_selection(), snapshot)
4467 }
4468
4469 pub fn newest_anchor_selection(&self) -> &Selection<Anchor> {
4470 self.pending_selection
4471 .as_ref()
4472 .map(|s| &s.selection)
4473 .or_else(|| self.selections.iter().max_by_key(|s| s.id))
4474 .unwrap()
4475 }
4476
4477 pub fn update_selections<T>(
4478 &mut self,
4479 mut selections: Vec<Selection<T>>,
4480 autoscroll: Option<Autoscroll>,
4481 cx: &mut ViewContext<Self>,
4482 ) where
4483 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
4484 {
4485 let buffer = self.buffer.read(cx).snapshot(cx);
4486 selections.sort_unstable_by_key(|s| s.start);
4487
4488 // Merge overlapping selections.
4489 let mut i = 1;
4490 while i < selections.len() {
4491 if selections[i - 1].end >= selections[i].start {
4492 let removed = selections.remove(i);
4493 if removed.start < selections[i - 1].start {
4494 selections[i - 1].start = removed.start;
4495 }
4496 if removed.end > selections[i - 1].end {
4497 selections[i - 1].end = removed.end;
4498 }
4499 } else {
4500 i += 1;
4501 }
4502 }
4503
4504 if let Some(autoscroll) = autoscroll {
4505 self.request_autoscroll(autoscroll, cx);
4506 }
4507
4508 self.set_selections(
4509 Arc::from_iter(selections.into_iter().map(|selection| {
4510 let end_bias = if selection.end > selection.start {
4511 Bias::Left
4512 } else {
4513 Bias::Right
4514 };
4515 Selection {
4516 id: selection.id,
4517 start: buffer.anchor_after(selection.start),
4518 end: buffer.anchor_at(selection.end, end_bias),
4519 reversed: selection.reversed,
4520 goal: selection.goal,
4521 }
4522 })),
4523 None,
4524 cx,
4525 );
4526 }
4527
4528 /// Compute new ranges for any selections that were located in excerpts that have
4529 /// since been removed.
4530 ///
4531 /// Returns a `HashMap` indicating which selections whose former head position
4532 /// was no longer present. The keys of the map are selection ids. The values are
4533 /// the id of the new excerpt where the head of the selection has been moved.
4534 pub fn refresh_selections(&mut self, cx: &mut ViewContext<Self>) -> HashMap<usize, ExcerptId> {
4535 let snapshot = self.buffer.read(cx).read(cx);
4536 let anchors_with_status = snapshot.refresh_anchors(
4537 self.selections
4538 .iter()
4539 .flat_map(|selection| [&selection.start, &selection.end]),
4540 );
4541 let offsets =
4542 snapshot.summaries_for_anchors::<usize, _>(anchors_with_status.iter().map(|a| &a.1));
4543 let offsets = offsets.chunks(2);
4544 let statuses = anchors_with_status
4545 .chunks(2)
4546 .map(|a| (a[0].0 / 2, a[0].2, a[1].2));
4547
4548 let mut selections_with_lost_position = HashMap::default();
4549 let new_selections = offsets
4550 .zip(statuses)
4551 .map(|(offsets, (selection_ix, kept_start, kept_end))| {
4552 let selection = &self.selections[selection_ix];
4553 let kept_head = if selection.reversed {
4554 kept_start
4555 } else {
4556 kept_end
4557 };
4558 if !kept_head {
4559 selections_with_lost_position
4560 .insert(selection.id, selection.head().excerpt_id.clone());
4561 }
4562
4563 Selection {
4564 id: selection.id,
4565 start: offsets[0],
4566 end: offsets[1],
4567 reversed: selection.reversed,
4568 goal: selection.goal,
4569 }
4570 })
4571 .collect();
4572 drop(snapshot);
4573 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
4574 selections_with_lost_position
4575 }
4576
4577 fn set_selections(
4578 &mut self,
4579 selections: Arc<[Selection<Anchor>]>,
4580 pending_selection: Option<PendingSelection>,
4581 cx: &mut ViewContext<Self>,
4582 ) {
4583 let old_cursor_position = self.newest_anchor_selection().head();
4584
4585 self.selections = selections;
4586 self.pending_selection = pending_selection;
4587 if self.focused {
4588 self.buffer.update(cx, |buffer, cx| {
4589 buffer.set_active_selections(&self.selections, cx)
4590 });
4591 }
4592
4593 let display_map = self
4594 .display_map
4595 .update(cx, |display_map, cx| display_map.snapshot(cx));
4596 let buffer = &display_map.buffer_snapshot;
4597 self.add_selections_state = None;
4598 self.select_next_state = None;
4599 self.select_larger_syntax_node_stack.clear();
4600 self.autoclose_stack.invalidate(&self.selections, &buffer);
4601 self.snippet_stack.invalidate(&self.selections, &buffer);
4602 self.invalidate_rename_range(&buffer, cx);
4603
4604 let new_cursor_position = self.newest_anchor_selection().head();
4605
4606 self.push_to_nav_history(
4607 old_cursor_position.clone(),
4608 Some(new_cursor_position.to_point(&buffer)),
4609 cx,
4610 );
4611
4612 let completion_menu = match self.context_menu.as_mut() {
4613 Some(ContextMenu::Completions(menu)) => Some(menu),
4614 _ => {
4615 self.context_menu.take();
4616 None
4617 }
4618 };
4619
4620 if let Some(completion_menu) = completion_menu {
4621 let cursor_position = new_cursor_position.to_offset(&buffer);
4622 let (word_range, kind) =
4623 buffer.surrounding_word(completion_menu.initial_position.clone());
4624 if kind == Some(CharKind::Word) && word_range.to_inclusive().contains(&cursor_position)
4625 {
4626 let query = Self::completion_query(&buffer, cursor_position);
4627 cx.background()
4628 .block(completion_menu.filter(query.as_deref(), cx.background().clone()));
4629 self.show_completions(&ShowCompletions, cx);
4630 } else {
4631 self.hide_context_menu(cx);
4632 }
4633 }
4634
4635 if old_cursor_position.to_display_point(&display_map).row()
4636 != new_cursor_position.to_display_point(&display_map).row()
4637 {
4638 self.available_code_actions.take();
4639 }
4640 self.refresh_code_actions(cx);
4641
4642 self.pause_cursor_blinking(cx);
4643 cx.emit(Event::SelectionsChanged);
4644 }
4645
4646 pub fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
4647 self.autoscroll_request = Some(autoscroll);
4648 cx.notify();
4649 }
4650
4651 fn start_transaction(&mut self, cx: &mut ViewContext<Self>) {
4652 self.start_transaction_at(Instant::now(), cx);
4653 }
4654
4655 fn start_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
4656 self.end_selection(cx);
4657 if let Some(tx_id) = self
4658 .buffer
4659 .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
4660 {
4661 self.selection_history
4662 .insert(tx_id, (self.selections.clone(), None));
4663 }
4664 }
4665
4666 fn end_transaction(&mut self, cx: &mut ViewContext<Self>) {
4667 self.end_transaction_at(Instant::now(), cx);
4668 }
4669
4670 fn end_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
4671 if let Some(tx_id) = self
4672 .buffer
4673 .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
4674 {
4675 if let Some((_, end_selections)) = self.selection_history.get_mut(&tx_id) {
4676 *end_selections = Some(self.selections.clone());
4677 } else {
4678 log::error!("unexpectedly ended a transaction that wasn't started by this editor");
4679 }
4680 }
4681 }
4682
4683 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
4684 log::info!("Editor::page_up");
4685 }
4686
4687 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
4688 log::info!("Editor::page_down");
4689 }
4690
4691 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
4692 let mut fold_ranges = Vec::new();
4693
4694 let selections = self.local_selections::<Point>(cx);
4695 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4696 for selection in selections {
4697 let range = selection.display_range(&display_map).sorted();
4698 let buffer_start_row = range.start.to_point(&display_map).row;
4699
4700 for row in (0..=range.end.row()).rev() {
4701 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
4702 let fold_range = self.foldable_range_for_line(&display_map, row);
4703 if fold_range.end.row >= buffer_start_row {
4704 fold_ranges.push(fold_range);
4705 if row <= range.start.row() {
4706 break;
4707 }
4708 }
4709 }
4710 }
4711 }
4712
4713 self.fold_ranges(fold_ranges, cx);
4714 }
4715
4716 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
4717 let selections = self.local_selections::<Point>(cx);
4718 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4719 let buffer = &display_map.buffer_snapshot;
4720 let ranges = selections
4721 .iter()
4722 .map(|s| {
4723 let range = s.display_range(&display_map).sorted();
4724 let mut start = range.start.to_point(&display_map);
4725 let mut end = range.end.to_point(&display_map);
4726 start.column = 0;
4727 end.column = buffer.line_len(end.row);
4728 start..end
4729 })
4730 .collect::<Vec<_>>();
4731 self.unfold_ranges(ranges, cx);
4732 }
4733
4734 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
4735 let max_point = display_map.max_point();
4736 if display_row >= max_point.row() {
4737 false
4738 } else {
4739 let (start_indent, is_blank) = display_map.line_indent(display_row);
4740 if is_blank {
4741 false
4742 } else {
4743 for display_row in display_row + 1..=max_point.row() {
4744 let (indent, is_blank) = display_map.line_indent(display_row);
4745 if !is_blank {
4746 return indent > start_indent;
4747 }
4748 }
4749 false
4750 }
4751 }
4752 }
4753
4754 fn foldable_range_for_line(
4755 &self,
4756 display_map: &DisplaySnapshot,
4757 start_row: u32,
4758 ) -> Range<Point> {
4759 let max_point = display_map.max_point();
4760
4761 let (start_indent, _) = display_map.line_indent(start_row);
4762 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
4763 let mut end = None;
4764 for row in start_row + 1..=max_point.row() {
4765 let (indent, is_blank) = display_map.line_indent(row);
4766 if !is_blank && indent <= start_indent {
4767 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
4768 break;
4769 }
4770 }
4771
4772 let end = end.unwrap_or(max_point);
4773 return start.to_point(display_map)..end.to_point(display_map);
4774 }
4775
4776 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
4777 let selections = self.local_selections::<Point>(cx);
4778 let ranges = selections.into_iter().map(|s| s.start..s.end);
4779 self.fold_ranges(ranges, cx);
4780 }
4781
4782 fn fold_ranges<T: ToOffset>(
4783 &mut self,
4784 ranges: impl IntoIterator<Item = Range<T>>,
4785 cx: &mut ViewContext<Self>,
4786 ) {
4787 let mut ranges = ranges.into_iter().peekable();
4788 if ranges.peek().is_some() {
4789 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
4790 self.request_autoscroll(Autoscroll::Fit, cx);
4791 cx.notify();
4792 }
4793 }
4794
4795 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
4796 if !ranges.is_empty() {
4797 self.display_map
4798 .update(cx, |map, cx| map.unfold(ranges, cx));
4799 self.request_autoscroll(Autoscroll::Fit, cx);
4800 cx.notify();
4801 }
4802 }
4803
4804 pub fn insert_blocks(
4805 &mut self,
4806 blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
4807 cx: &mut ViewContext<Self>,
4808 ) -> Vec<BlockId> {
4809 let blocks = self
4810 .display_map
4811 .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
4812 self.request_autoscroll(Autoscroll::Fit, cx);
4813 blocks
4814 }
4815
4816 pub fn replace_blocks(
4817 &mut self,
4818 blocks: HashMap<BlockId, RenderBlock>,
4819 cx: &mut ViewContext<Self>,
4820 ) {
4821 self.display_map
4822 .update(cx, |display_map, _| display_map.replace_blocks(blocks));
4823 self.request_autoscroll(Autoscroll::Fit, cx);
4824 }
4825
4826 pub fn remove_blocks(&mut self, block_ids: HashSet<BlockId>, cx: &mut ViewContext<Self>) {
4827 self.display_map.update(cx, |display_map, cx| {
4828 display_map.remove_blocks(block_ids, cx)
4829 });
4830 }
4831
4832 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
4833 self.display_map
4834 .update(cx, |map, cx| map.snapshot(cx))
4835 .longest_row()
4836 }
4837
4838 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
4839 self.display_map
4840 .update(cx, |map, cx| map.snapshot(cx))
4841 .max_point()
4842 }
4843
4844 pub fn text(&self, cx: &AppContext) -> String {
4845 self.buffer.read(cx).read(cx).text()
4846 }
4847
4848 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
4849 self.display_map
4850 .update(cx, |map, cx| map.snapshot(cx))
4851 .text()
4852 }
4853
4854 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
4855 self.display_map
4856 .update(cx, |map, cx| map.set_wrap_width(width, cx))
4857 }
4858
4859 pub fn set_highlighted_rows(&mut self, rows: Option<Range<u32>>) {
4860 self.highlighted_rows = rows;
4861 }
4862
4863 pub fn highlighted_rows(&self) -> Option<Range<u32>> {
4864 self.highlighted_rows.clone()
4865 }
4866
4867 pub fn highlight_ranges<T: 'static>(
4868 &mut self,
4869 ranges: Vec<Range<Anchor>>,
4870 color: Color,
4871 cx: &mut ViewContext<Self>,
4872 ) {
4873 self.highlighted_ranges
4874 .insert(TypeId::of::<T>(), (color, ranges));
4875 cx.notify();
4876 }
4877
4878 pub fn clear_highlighted_ranges<T: 'static>(
4879 &mut self,
4880 cx: &mut ViewContext<Self>,
4881 ) -> Option<(Color, Vec<Range<Anchor>>)> {
4882 cx.notify();
4883 self.highlighted_ranges.remove(&TypeId::of::<T>())
4884 }
4885
4886 #[cfg(feature = "test-support")]
4887 pub fn all_highlighted_ranges(
4888 &mut self,
4889 cx: &mut ViewContext<Self>,
4890 ) -> Vec<(Range<DisplayPoint>, Color)> {
4891 let snapshot = self.snapshot(cx);
4892 let buffer = &snapshot.buffer_snapshot;
4893 let start = buffer.anchor_before(0);
4894 let end = buffer.anchor_after(buffer.len());
4895 self.highlighted_ranges_in_range(start..end, &snapshot)
4896 }
4897
4898 pub fn highlighted_ranges_for_type<T: 'static>(&self) -> Option<(Color, &[Range<Anchor>])> {
4899 self.highlighted_ranges
4900 .get(&TypeId::of::<T>())
4901 .map(|(color, ranges)| (*color, ranges.as_slice()))
4902 }
4903
4904 pub fn highlighted_ranges_in_range(
4905 &self,
4906 search_range: Range<Anchor>,
4907 display_snapshot: &DisplaySnapshot,
4908 ) -> Vec<(Range<DisplayPoint>, Color)> {
4909 let mut results = Vec::new();
4910 let buffer = &display_snapshot.buffer_snapshot;
4911 for (color, ranges) in self.highlighted_ranges.values() {
4912 let start_ix = match ranges.binary_search_by(|probe| {
4913 let cmp = probe.end.cmp(&search_range.start, &buffer).unwrap();
4914 if cmp.is_gt() {
4915 Ordering::Greater
4916 } else {
4917 Ordering::Less
4918 }
4919 }) {
4920 Ok(i) | Err(i) => i,
4921 };
4922 for range in &ranges[start_ix..] {
4923 if range.start.cmp(&search_range.end, &buffer).unwrap().is_ge() {
4924 break;
4925 }
4926 let start = range
4927 .start
4928 .to_point(buffer)
4929 .to_display_point(display_snapshot);
4930 let end = range
4931 .end
4932 .to_point(buffer)
4933 .to_display_point(display_snapshot);
4934 results.push((start..end, *color))
4935 }
4936 }
4937 results
4938 }
4939
4940 fn next_blink_epoch(&mut self) -> usize {
4941 self.blink_epoch += 1;
4942 self.blink_epoch
4943 }
4944
4945 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
4946 if !self.focused {
4947 return;
4948 }
4949
4950 self.show_local_cursors = true;
4951 cx.notify();
4952
4953 let epoch = self.next_blink_epoch();
4954 cx.spawn(|this, mut cx| {
4955 let this = this.downgrade();
4956 async move {
4957 Timer::after(CURSOR_BLINK_INTERVAL).await;
4958 if let Some(this) = this.upgrade(&cx) {
4959 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
4960 }
4961 }
4962 })
4963 .detach();
4964 }
4965
4966 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
4967 if epoch == self.blink_epoch {
4968 self.blinking_paused = false;
4969 self.blink_cursors(epoch, cx);
4970 }
4971 }
4972
4973 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
4974 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
4975 self.show_local_cursors = !self.show_local_cursors;
4976 cx.notify();
4977
4978 let epoch = self.next_blink_epoch();
4979 cx.spawn(|this, mut cx| {
4980 let this = this.downgrade();
4981 async move {
4982 Timer::after(CURSOR_BLINK_INTERVAL).await;
4983 if let Some(this) = this.upgrade(&cx) {
4984 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
4985 }
4986 }
4987 })
4988 .detach();
4989 }
4990 }
4991
4992 pub fn show_local_cursors(&self) -> bool {
4993 self.show_local_cursors
4994 }
4995
4996 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
4997 cx.notify();
4998 }
4999
5000 fn on_buffer_event(
5001 &mut self,
5002 _: ModelHandle<MultiBuffer>,
5003 event: &language::Event,
5004 cx: &mut ViewContext<Self>,
5005 ) {
5006 match event {
5007 language::Event::Edited => {
5008 self.refresh_active_diagnostics(cx);
5009 self.refresh_code_actions(cx);
5010 cx.emit(Event::Edited);
5011 }
5012 language::Event::Dirtied => cx.emit(Event::Dirtied),
5013 language::Event::Saved => cx.emit(Event::Saved),
5014 language::Event::FileHandleChanged => cx.emit(Event::TitleChanged),
5015 language::Event::Reloaded => cx.emit(Event::TitleChanged),
5016 language::Event::Closed => cx.emit(Event::Closed),
5017 language::Event::DiagnosticsUpdated => {
5018 self.refresh_active_diagnostics(cx);
5019 }
5020 _ => {}
5021 }
5022 }
5023
5024 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
5025 cx.notify();
5026 }
5027}
5028
5029impl EditorSnapshot {
5030 pub fn is_focused(&self) -> bool {
5031 self.is_focused
5032 }
5033
5034 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
5035 self.placeholder_text.as_ref()
5036 }
5037
5038 pub fn scroll_position(&self) -> Vector2F {
5039 compute_scroll_position(
5040 &self.display_snapshot,
5041 self.scroll_position,
5042 &self.scroll_top_anchor,
5043 )
5044 }
5045}
5046
5047impl Deref for EditorSnapshot {
5048 type Target = DisplaySnapshot;
5049
5050 fn deref(&self) -> &Self::Target {
5051 &self.display_snapshot
5052 }
5053}
5054
5055impl EditorSettings {
5056 #[cfg(any(test, feature = "test-support"))]
5057 pub fn test(cx: &AppContext) -> Self {
5058 use theme::{ContainedLabel, ContainedText, DiagnosticHeader, DiagnosticPathHeader};
5059
5060 Self {
5061 tab_size: 4,
5062 soft_wrap: SoftWrap::None,
5063 style: {
5064 let font_cache: &gpui::FontCache = cx.font_cache();
5065 let font_family_name = Arc::from("Monaco");
5066 let font_properties = Default::default();
5067 let font_family_id = font_cache.load_family(&[&font_family_name]).unwrap();
5068 let font_id = font_cache
5069 .select_font(font_family_id, &font_properties)
5070 .unwrap();
5071 let text = gpui::fonts::TextStyle {
5072 font_family_name,
5073 font_family_id,
5074 font_id,
5075 font_size: 14.,
5076 color: gpui::color::Color::from_u32(0xff0000ff),
5077 font_properties,
5078 underline: None,
5079 };
5080 let default_diagnostic_style = DiagnosticStyle {
5081 message: text.clone().into(),
5082 header: Default::default(),
5083 text_scale_factor: 1.,
5084 };
5085 EditorStyle {
5086 text: text.clone(),
5087 placeholder_text: None,
5088 background: Default::default(),
5089 gutter_background: Default::default(),
5090 gutter_padding_factor: 2.,
5091 active_line_background: Default::default(),
5092 highlighted_line_background: Default::default(),
5093 line_number: Default::default(),
5094 line_number_active: Default::default(),
5095 selection: Default::default(),
5096 guest_selections: Default::default(),
5097 syntax: Default::default(),
5098 diagnostic_path_header: DiagnosticPathHeader {
5099 container: Default::default(),
5100 filename: ContainedText {
5101 container: Default::default(),
5102 text: text.clone(),
5103 },
5104 path: ContainedText {
5105 container: Default::default(),
5106 text: text.clone(),
5107 },
5108 text_scale_factor: 1.,
5109 },
5110 diagnostic_header: DiagnosticHeader {
5111 container: Default::default(),
5112 message: ContainedLabel {
5113 container: Default::default(),
5114 label: text.clone().into(),
5115 },
5116 code: ContainedText {
5117 container: Default::default(),
5118 text: text.clone(),
5119 },
5120 icon_width_factor: 1.,
5121 text_scale_factor: 1.,
5122 },
5123 error_diagnostic: default_diagnostic_style.clone(),
5124 invalid_error_diagnostic: default_diagnostic_style.clone(),
5125 warning_diagnostic: default_diagnostic_style.clone(),
5126 invalid_warning_diagnostic: default_diagnostic_style.clone(),
5127 information_diagnostic: default_diagnostic_style.clone(),
5128 invalid_information_diagnostic: default_diagnostic_style.clone(),
5129 hint_diagnostic: default_diagnostic_style.clone(),
5130 invalid_hint_diagnostic: default_diagnostic_style.clone(),
5131 autocomplete: Default::default(),
5132 code_actions_indicator: Default::default(),
5133 }
5134 },
5135 }
5136 }
5137}
5138
5139fn compute_scroll_position(
5140 snapshot: &DisplaySnapshot,
5141 mut scroll_position: Vector2F,
5142 scroll_top_anchor: &Option<Anchor>,
5143) -> Vector2F {
5144 if let Some(anchor) = scroll_top_anchor {
5145 let scroll_top = anchor.to_display_point(snapshot).row() as f32;
5146 scroll_position.set_y(scroll_top + scroll_position.y());
5147 } else {
5148 scroll_position.set_y(0.);
5149 }
5150 scroll_position
5151}
5152
5153#[derive(Copy, Clone)]
5154pub enum Event {
5155 Activate,
5156 Edited,
5157 Blurred,
5158 Dirtied,
5159 Saved,
5160 TitleChanged,
5161 SelectionsChanged,
5162 Closed,
5163}
5164
5165impl Entity for Editor {
5166 type Event = Event;
5167}
5168
5169impl View for Editor {
5170 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
5171 let settings = (self.build_settings)(cx);
5172 self.display_map.update(cx, |map, cx| {
5173 map.set_font(
5174 settings.style.text.font_id,
5175 settings.style.text.font_size,
5176 cx,
5177 )
5178 });
5179 EditorElement::new(self.handle.clone(), settings).boxed()
5180 }
5181
5182 fn ui_name() -> &'static str {
5183 "Editor"
5184 }
5185
5186 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
5187 self.focused = true;
5188 self.blink_cursors(self.blink_epoch, cx);
5189 self.buffer.update(cx, |buffer, cx| {
5190 buffer.finalize_last_transaction(cx);
5191 buffer.set_active_selections(&self.selections, cx)
5192 });
5193 }
5194
5195 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
5196 self.focused = false;
5197 self.show_local_cursors = false;
5198 self.buffer
5199 .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
5200 self.hide_context_menu(cx);
5201 cx.emit(Event::Blurred);
5202 cx.notify();
5203 }
5204
5205 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
5206 let mut cx = Self::default_keymap_context();
5207 let mode = match self.mode {
5208 EditorMode::SingleLine => "single_line",
5209 EditorMode::AutoHeight { .. } => "auto_height",
5210 EditorMode::Full => "full",
5211 };
5212 cx.map.insert("mode".into(), mode.into());
5213 if self.rename_range().is_some() {
5214 cx.set.insert("renaming".into());
5215 }
5216 match self.context_menu.as_ref() {
5217 Some(ContextMenu::Completions(_)) => {
5218 cx.set.insert("showing_completions".into());
5219 }
5220 Some(ContextMenu::CodeActions(_)) => {
5221 cx.set.insert("showing_code_actions".into());
5222 }
5223 None => {}
5224 }
5225 cx
5226 }
5227}
5228
5229impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
5230 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
5231 let start = self.start.to_point(buffer);
5232 let end = self.end.to_point(buffer);
5233 if self.reversed {
5234 end..start
5235 } else {
5236 start..end
5237 }
5238 }
5239
5240 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
5241 let start = self.start.to_offset(buffer);
5242 let end = self.end.to_offset(buffer);
5243 if self.reversed {
5244 end..start
5245 } else {
5246 start..end
5247 }
5248 }
5249
5250 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
5251 let start = self
5252 .start
5253 .to_point(&map.buffer_snapshot)
5254 .to_display_point(map);
5255 let end = self
5256 .end
5257 .to_point(&map.buffer_snapshot)
5258 .to_display_point(map);
5259 if self.reversed {
5260 end..start
5261 } else {
5262 start..end
5263 }
5264 }
5265
5266 fn spanned_rows(
5267 &self,
5268 include_end_if_at_line_start: bool,
5269 map: &DisplaySnapshot,
5270 ) -> Range<u32> {
5271 let start = self.start.to_point(&map.buffer_snapshot);
5272 let mut end = self.end.to_point(&map.buffer_snapshot);
5273 if !include_end_if_at_line_start && start.row != end.row && end.column == 0 {
5274 end.row -= 1;
5275 }
5276
5277 let buffer_start = map.prev_line_boundary(start).0;
5278 let buffer_end = map.next_line_boundary(end).0;
5279 buffer_start.row..buffer_end.row + 1
5280 }
5281}
5282
5283impl<T: InvalidationRegion> InvalidationStack<T> {
5284 fn invalidate<S>(&mut self, selections: &[Selection<S>], buffer: &MultiBufferSnapshot)
5285 where
5286 S: Clone + ToOffset,
5287 {
5288 while let Some(region) = self.last() {
5289 let all_selections_inside_invalidation_ranges =
5290 if selections.len() == region.ranges().len() {
5291 selections
5292 .iter()
5293 .zip(region.ranges().iter().map(|r| r.to_offset(&buffer)))
5294 .all(|(selection, invalidation_range)| {
5295 let head = selection.head().to_offset(&buffer);
5296 invalidation_range.start <= head && invalidation_range.end >= head
5297 })
5298 } else {
5299 false
5300 };
5301
5302 if all_selections_inside_invalidation_ranges {
5303 break;
5304 } else {
5305 self.pop();
5306 }
5307 }
5308 }
5309}
5310
5311impl<T> Default for InvalidationStack<T> {
5312 fn default() -> Self {
5313 Self(Default::default())
5314 }
5315}
5316
5317impl<T> Deref for InvalidationStack<T> {
5318 type Target = Vec<T>;
5319
5320 fn deref(&self) -> &Self::Target {
5321 &self.0
5322 }
5323}
5324
5325impl<T> DerefMut for InvalidationStack<T> {
5326 fn deref_mut(&mut self) -> &mut Self::Target {
5327 &mut self.0
5328 }
5329}
5330
5331impl InvalidationRegion for BracketPairState {
5332 fn ranges(&self) -> &[Range<Anchor>] {
5333 &self.ranges
5334 }
5335}
5336
5337impl InvalidationRegion for SnippetState {
5338 fn ranges(&self) -> &[Range<Anchor>] {
5339 &self.ranges[self.active_index]
5340 }
5341}
5342
5343pub fn diagnostic_block_renderer(
5344 diagnostic: Diagnostic,
5345 is_valid: bool,
5346 build_settings: BuildSettings,
5347) -> RenderBlock {
5348 let mut highlighted_lines = Vec::new();
5349 for line in diagnostic.message.lines() {
5350 highlighted_lines.push(highlight_diagnostic_message(line));
5351 }
5352
5353 Arc::new(move |cx: &BlockContext| {
5354 let settings = build_settings(cx);
5355 let style = diagnostic_style(diagnostic.severity, is_valid, &settings.style);
5356 let font_size = (style.text_scale_factor * settings.style.text.font_size).round();
5357 Flex::column()
5358 .with_children(highlighted_lines.iter().map(|(line, highlights)| {
5359 Label::new(
5360 line.clone(),
5361 style.message.clone().with_font_size(font_size),
5362 )
5363 .with_highlights(highlights.clone())
5364 .contained()
5365 .with_margin_left(cx.anchor_x)
5366 .boxed()
5367 }))
5368 .aligned()
5369 .left()
5370 .boxed()
5371 })
5372}
5373
5374pub fn highlight_diagnostic_message(message: &str) -> (String, Vec<usize>) {
5375 let mut message_without_backticks = String::new();
5376 let mut prev_offset = 0;
5377 let mut inside_block = false;
5378 let mut highlights = Vec::new();
5379 for (match_ix, (offset, _)) in message
5380 .match_indices('`')
5381 .chain([(message.len(), "")])
5382 .enumerate()
5383 {
5384 message_without_backticks.push_str(&message[prev_offset..offset]);
5385 if inside_block {
5386 highlights.extend(prev_offset - match_ix..offset - match_ix);
5387 }
5388
5389 inside_block = !inside_block;
5390 prev_offset = offset + 1;
5391 }
5392
5393 (message_without_backticks, highlights)
5394}
5395
5396pub fn diagnostic_style(
5397 severity: DiagnosticSeverity,
5398 valid: bool,
5399 style: &EditorStyle,
5400) -> DiagnosticStyle {
5401 match (severity, valid) {
5402 (DiagnosticSeverity::ERROR, true) => style.error_diagnostic.clone(),
5403 (DiagnosticSeverity::ERROR, false) => style.invalid_error_diagnostic.clone(),
5404 (DiagnosticSeverity::WARNING, true) => style.warning_diagnostic.clone(),
5405 (DiagnosticSeverity::WARNING, false) => style.invalid_warning_diagnostic.clone(),
5406 (DiagnosticSeverity::INFORMATION, true) => style.information_diagnostic.clone(),
5407 (DiagnosticSeverity::INFORMATION, false) => style.invalid_information_diagnostic.clone(),
5408 (DiagnosticSeverity::HINT, true) => style.hint_diagnostic.clone(),
5409 (DiagnosticSeverity::HINT, false) => style.invalid_hint_diagnostic.clone(),
5410 _ => DiagnosticStyle {
5411 message: style.text.clone().into(),
5412 header: Default::default(),
5413 text_scale_factor: 1.,
5414 },
5415 }
5416}
5417
5418pub fn settings_builder(
5419 buffer: WeakModelHandle<MultiBuffer>,
5420 settings: watch::Receiver<workspace::Settings>,
5421) -> BuildSettings {
5422 Arc::new(move |cx| {
5423 let settings = settings.borrow();
5424 let font_cache = cx.font_cache();
5425 let font_family_id = settings.buffer_font_family;
5426 let font_family_name = cx.font_cache().family_name(font_family_id).unwrap();
5427 let font_properties = Default::default();
5428 let font_id = font_cache
5429 .select_font(font_family_id, &font_properties)
5430 .unwrap();
5431 let font_size = settings.buffer_font_size;
5432
5433 let mut theme = settings.theme.editor.clone();
5434 theme.text = TextStyle {
5435 color: theme.text.color,
5436 font_family_name,
5437 font_family_id,
5438 font_id,
5439 font_size,
5440 font_properties,
5441 underline: None,
5442 };
5443 let language = buffer.upgrade(cx).and_then(|buf| buf.read(cx).language(cx));
5444 let soft_wrap = match settings.soft_wrap(language) {
5445 workspace::settings::SoftWrap::None => SoftWrap::None,
5446 workspace::settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
5447 workspace::settings::SoftWrap::PreferredLineLength => {
5448 SoftWrap::Column(settings.preferred_line_length(language).saturating_sub(1))
5449 }
5450 };
5451
5452 EditorSettings {
5453 tab_size: settings.tab_size,
5454 soft_wrap,
5455 style: theme,
5456 }
5457 })
5458}
5459
5460pub fn combine_syntax_and_fuzzy_match_highlights(
5461 text: &str,
5462 default_style: HighlightStyle,
5463 syntax_ranges: impl Iterator<Item = (Range<usize>, HighlightStyle)>,
5464 match_indices: &[usize],
5465) -> Vec<(Range<usize>, HighlightStyle)> {
5466 let mut result = Vec::new();
5467 let mut match_indices = match_indices.iter().copied().peekable();
5468
5469 for (range, mut syntax_highlight) in syntax_ranges.chain([(usize::MAX..0, Default::default())])
5470 {
5471 syntax_highlight.font_properties.weight(Default::default());
5472
5473 // Add highlights for any fuzzy match characters before the next
5474 // syntax highlight range.
5475 while let Some(&match_index) = match_indices.peek() {
5476 if match_index >= range.start {
5477 break;
5478 }
5479 match_indices.next();
5480 let end_index = char_ix_after(match_index, text);
5481 let mut match_style = default_style;
5482 match_style.font_properties.weight(fonts::Weight::BOLD);
5483 result.push((match_index..end_index, match_style));
5484 }
5485
5486 if range.start == usize::MAX {
5487 break;
5488 }
5489
5490 // Add highlights for any fuzzy match characters within the
5491 // syntax highlight range.
5492 let mut offset = range.start;
5493 while let Some(&match_index) = match_indices.peek() {
5494 if match_index >= range.end {
5495 break;
5496 }
5497
5498 match_indices.next();
5499 if match_index > offset {
5500 result.push((offset..match_index, syntax_highlight));
5501 }
5502
5503 let mut end_index = char_ix_after(match_index, text);
5504 while let Some(&next_match_index) = match_indices.peek() {
5505 if next_match_index == end_index && next_match_index < range.end {
5506 end_index = char_ix_after(next_match_index, text);
5507 match_indices.next();
5508 } else {
5509 break;
5510 }
5511 }
5512
5513 let mut match_style = syntax_highlight;
5514 match_style.font_properties.weight(fonts::Weight::BOLD);
5515 result.push((match_index..end_index, match_style));
5516 offset = end_index;
5517 }
5518
5519 if offset < range.end {
5520 result.push((offset..range.end, syntax_highlight));
5521 }
5522 }
5523
5524 fn char_ix_after(ix: usize, text: &str) -> usize {
5525 ix + text[ix..].chars().next().unwrap().len_utf8()
5526 }
5527
5528 result
5529}
5530
5531fn styled_runs_for_completion_label<'a>(
5532 label: &'a CompletionLabel,
5533 default_color: Color,
5534 syntax_theme: &'a theme::SyntaxTheme,
5535) -> impl 'a + Iterator<Item = (Range<usize>, HighlightStyle)> {
5536 const MUTED_OPACITY: usize = 165;
5537
5538 let mut muted_default_style = HighlightStyle {
5539 color: default_color,
5540 ..Default::default()
5541 };
5542 muted_default_style.color.a = ((default_color.a as usize * MUTED_OPACITY) / 255) as u8;
5543
5544 let mut prev_end = label.filter_range.end;
5545 label
5546 .runs
5547 .iter()
5548 .enumerate()
5549 .flat_map(move |(ix, (range, highlight_id))| {
5550 let style = if let Some(style) = highlight_id.style(syntax_theme) {
5551 style
5552 } else {
5553 return Default::default();
5554 };
5555 let mut muted_style = style.clone();
5556 muted_style.color.a = ((style.color.a as usize * MUTED_OPACITY) / 255) as u8;
5557
5558 let mut runs = SmallVec::<[(Range<usize>, HighlightStyle); 3]>::new();
5559 if range.start >= label.filter_range.end {
5560 if range.start > prev_end {
5561 runs.push((prev_end..range.start, muted_default_style));
5562 }
5563 runs.push((range.clone(), muted_style));
5564 } else if range.end <= label.filter_range.end {
5565 runs.push((range.clone(), style));
5566 } else {
5567 runs.push((range.start..label.filter_range.end, style));
5568 runs.push((label.filter_range.end..range.end, muted_style));
5569 }
5570 prev_end = cmp::max(prev_end, range.end);
5571
5572 if ix + 1 == label.runs.len() && label.text.len() > prev_end {
5573 runs.push((prev_end..label.text.len(), muted_default_style));
5574 }
5575
5576 runs
5577 })
5578}
5579
5580#[cfg(test)]
5581mod tests {
5582 use super::*;
5583 use language::LanguageConfig;
5584 use lsp::FakeLanguageServer;
5585 use project::{FakeFs, ProjectPath};
5586 use smol::stream::StreamExt;
5587 use std::{cell::RefCell, rc::Rc, time::Instant};
5588 use text::Point;
5589 use unindent::Unindent;
5590 use util::test::sample_text;
5591
5592 #[gpui::test]
5593 fn test_undo_redo_with_selection_restoration(cx: &mut MutableAppContext) {
5594 let mut now = Instant::now();
5595 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
5596 let group_interval = buffer.read(cx).transaction_group_interval();
5597 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5598 let settings = EditorSettings::test(cx);
5599 let (_, editor) = cx.add_window(Default::default(), |cx| {
5600 build_editor(buffer.clone(), settings, cx)
5601 });
5602
5603 editor.update(cx, |editor, cx| {
5604 editor.start_transaction_at(now, cx);
5605 editor.select_ranges([2..4], None, cx);
5606 editor.insert("cd", cx);
5607 editor.end_transaction_at(now, cx);
5608 assert_eq!(editor.text(cx), "12cd56");
5609 assert_eq!(editor.selected_ranges(cx), vec![4..4]);
5610
5611 editor.start_transaction_at(now, cx);
5612 editor.select_ranges([4..5], None, cx);
5613 editor.insert("e", cx);
5614 editor.end_transaction_at(now, cx);
5615 assert_eq!(editor.text(cx), "12cde6");
5616 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
5617
5618 now += group_interval + Duration::from_millis(1);
5619 editor.select_ranges([2..2], None, cx);
5620
5621 // Simulate an edit in another editor
5622 buffer.update(cx, |buffer, cx| {
5623 buffer.start_transaction_at(now, cx);
5624 buffer.edit([0..1], "a", cx);
5625 buffer.edit([1..1], "b", cx);
5626 buffer.end_transaction_at(now, cx);
5627 });
5628
5629 assert_eq!(editor.text(cx), "ab2cde6");
5630 assert_eq!(editor.selected_ranges(cx), vec![3..3]);
5631
5632 // Last transaction happened past the group interval in a different editor.
5633 // Undo it individually and don't restore selections.
5634 editor.undo(&Undo, cx);
5635 assert_eq!(editor.text(cx), "12cde6");
5636 assert_eq!(editor.selected_ranges(cx), vec![2..2]);
5637
5638 // First two transactions happened within the group interval in this editor.
5639 // Undo them together and restore selections.
5640 editor.undo(&Undo, cx);
5641 editor.undo(&Undo, cx); // Undo stack is empty here, so this is a no-op.
5642 assert_eq!(editor.text(cx), "123456");
5643 assert_eq!(editor.selected_ranges(cx), vec![0..0]);
5644
5645 // Redo the first two transactions together.
5646 editor.redo(&Redo, cx);
5647 assert_eq!(editor.text(cx), "12cde6");
5648 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
5649
5650 // Redo the last transaction on its own.
5651 editor.redo(&Redo, cx);
5652 assert_eq!(editor.text(cx), "ab2cde6");
5653 assert_eq!(editor.selected_ranges(cx), vec![6..6]);
5654
5655 // Test empty transactions.
5656 editor.start_transaction_at(now, cx);
5657 editor.end_transaction_at(now, cx);
5658 editor.undo(&Undo, cx);
5659 assert_eq!(editor.text(cx), "12cde6");
5660 });
5661 }
5662
5663 #[gpui::test]
5664 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
5665 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
5666 let settings = EditorSettings::test(cx);
5667 let (_, editor) =
5668 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5669
5670 editor.update(cx, |view, cx| {
5671 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
5672 });
5673
5674 assert_eq!(
5675 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5676 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
5677 );
5678
5679 editor.update(cx, |view, cx| {
5680 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
5681 });
5682
5683 assert_eq!(
5684 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5685 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
5686 );
5687
5688 editor.update(cx, |view, cx| {
5689 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
5690 });
5691
5692 assert_eq!(
5693 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5694 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
5695 );
5696
5697 editor.update(cx, |view, cx| {
5698 view.end_selection(cx);
5699 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
5700 });
5701
5702 assert_eq!(
5703 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5704 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
5705 );
5706
5707 editor.update(cx, |view, cx| {
5708 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
5709 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
5710 });
5711
5712 assert_eq!(
5713 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5714 [
5715 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
5716 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
5717 ]
5718 );
5719
5720 editor.update(cx, |view, cx| {
5721 view.end_selection(cx);
5722 });
5723
5724 assert_eq!(
5725 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5726 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
5727 );
5728 }
5729
5730 #[gpui::test]
5731 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
5732 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
5733 let settings = EditorSettings::test(cx);
5734 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5735
5736 view.update(cx, |view, cx| {
5737 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
5738 assert_eq!(
5739 view.selected_display_ranges(cx),
5740 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
5741 );
5742 });
5743
5744 view.update(cx, |view, cx| {
5745 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
5746 assert_eq!(
5747 view.selected_display_ranges(cx),
5748 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
5749 );
5750 });
5751
5752 view.update(cx, |view, cx| {
5753 view.cancel(&Cancel, cx);
5754 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
5755 assert_eq!(
5756 view.selected_display_ranges(cx),
5757 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
5758 );
5759 });
5760 }
5761
5762 #[gpui::test]
5763 fn test_navigation_history(cx: &mut gpui::MutableAppContext) {
5764 cx.add_window(Default::default(), |cx| {
5765 use workspace::ItemView;
5766 let nav_history = Rc::new(RefCell::new(workspace::NavHistory::default()));
5767 let settings = EditorSettings::test(&cx);
5768 let buffer = MultiBuffer::build_simple(&sample_text(30, 5, 'a'), cx);
5769 let mut editor = build_editor(buffer.clone(), settings, cx);
5770 editor.nav_history = Some(ItemNavHistory::new(nav_history.clone(), &cx.handle()));
5771
5772 // Move the cursor a small distance.
5773 // Nothing is added to the navigation history.
5774 editor.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
5775 editor.select_display_ranges(&[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)], cx);
5776 assert!(nav_history.borrow_mut().pop_backward().is_none());
5777
5778 // Move the cursor a large distance.
5779 // The history can jump back to the previous position.
5780 editor.select_display_ranges(&[DisplayPoint::new(13, 0)..DisplayPoint::new(13, 3)], cx);
5781 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
5782 editor.navigate(nav_entry.data.unwrap(), cx);
5783 assert_eq!(nav_entry.item_view.id(), cx.view_id());
5784 assert_eq!(
5785 editor.selected_display_ranges(cx),
5786 &[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)]
5787 );
5788
5789 // Move the cursor a small distance via the mouse.
5790 // Nothing is added to the navigation history.
5791 editor.begin_selection(DisplayPoint::new(5, 0), false, 1, cx);
5792 editor.end_selection(cx);
5793 assert_eq!(
5794 editor.selected_display_ranges(cx),
5795 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
5796 );
5797 assert!(nav_history.borrow_mut().pop_backward().is_none());
5798
5799 // Move the cursor a large distance via the mouse.
5800 // The history can jump back to the previous position.
5801 editor.begin_selection(DisplayPoint::new(15, 0), false, 1, cx);
5802 editor.end_selection(cx);
5803 assert_eq!(
5804 editor.selected_display_ranges(cx),
5805 &[DisplayPoint::new(15, 0)..DisplayPoint::new(15, 0)]
5806 );
5807 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
5808 editor.navigate(nav_entry.data.unwrap(), cx);
5809 assert_eq!(nav_entry.item_view.id(), cx.view_id());
5810 assert_eq!(
5811 editor.selected_display_ranges(cx),
5812 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
5813 );
5814
5815 editor
5816 });
5817 }
5818
5819 #[gpui::test]
5820 fn test_cancel(cx: &mut gpui::MutableAppContext) {
5821 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
5822 let settings = EditorSettings::test(cx);
5823 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5824
5825 view.update(cx, |view, cx| {
5826 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
5827 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
5828 view.end_selection(cx);
5829
5830 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
5831 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
5832 view.end_selection(cx);
5833 assert_eq!(
5834 view.selected_display_ranges(cx),
5835 [
5836 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5837 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
5838 ]
5839 );
5840 });
5841
5842 view.update(cx, |view, cx| {
5843 view.cancel(&Cancel, cx);
5844 assert_eq!(
5845 view.selected_display_ranges(cx),
5846 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
5847 );
5848 });
5849
5850 view.update(cx, |view, cx| {
5851 view.cancel(&Cancel, cx);
5852 assert_eq!(
5853 view.selected_display_ranges(cx),
5854 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
5855 );
5856 });
5857 }
5858
5859 #[gpui::test]
5860 fn test_fold(cx: &mut gpui::MutableAppContext) {
5861 let buffer = MultiBuffer::build_simple(
5862 &"
5863 impl Foo {
5864 // Hello!
5865
5866 fn a() {
5867 1
5868 }
5869
5870 fn b() {
5871 2
5872 }
5873
5874 fn c() {
5875 3
5876 }
5877 }
5878 "
5879 .unindent(),
5880 cx,
5881 );
5882 let settings = EditorSettings::test(&cx);
5883 let (_, view) = cx.add_window(Default::default(), |cx| {
5884 build_editor(buffer.clone(), settings, cx)
5885 });
5886
5887 view.update(cx, |view, cx| {
5888 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx);
5889 view.fold(&Fold, cx);
5890 assert_eq!(
5891 view.display_text(cx),
5892 "
5893 impl Foo {
5894 // Hello!
5895
5896 fn a() {
5897 1
5898 }
5899
5900 fn b() {…
5901 }
5902
5903 fn c() {…
5904 }
5905 }
5906 "
5907 .unindent(),
5908 );
5909
5910 view.fold(&Fold, cx);
5911 assert_eq!(
5912 view.display_text(cx),
5913 "
5914 impl Foo {…
5915 }
5916 "
5917 .unindent(),
5918 );
5919
5920 view.unfold(&Unfold, cx);
5921 assert_eq!(
5922 view.display_text(cx),
5923 "
5924 impl Foo {
5925 // Hello!
5926
5927 fn a() {
5928 1
5929 }
5930
5931 fn b() {…
5932 }
5933
5934 fn c() {…
5935 }
5936 }
5937 "
5938 .unindent(),
5939 );
5940
5941 view.unfold(&Unfold, cx);
5942 assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text());
5943 });
5944 }
5945
5946 #[gpui::test]
5947 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
5948 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
5949 let settings = EditorSettings::test(&cx);
5950 let (_, view) = cx.add_window(Default::default(), |cx| {
5951 build_editor(buffer.clone(), settings, cx)
5952 });
5953
5954 buffer.update(cx, |buffer, cx| {
5955 buffer.edit(
5956 vec![
5957 Point::new(1, 0)..Point::new(1, 0),
5958 Point::new(1, 1)..Point::new(1, 1),
5959 ],
5960 "\t",
5961 cx,
5962 );
5963 });
5964
5965 view.update(cx, |view, cx| {
5966 assert_eq!(
5967 view.selected_display_ranges(cx),
5968 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
5969 );
5970
5971 view.move_down(&MoveDown, cx);
5972 assert_eq!(
5973 view.selected_display_ranges(cx),
5974 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
5975 );
5976
5977 view.move_right(&MoveRight, cx);
5978 assert_eq!(
5979 view.selected_display_ranges(cx),
5980 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
5981 );
5982
5983 view.move_left(&MoveLeft, cx);
5984 assert_eq!(
5985 view.selected_display_ranges(cx),
5986 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
5987 );
5988
5989 view.move_up(&MoveUp, cx);
5990 assert_eq!(
5991 view.selected_display_ranges(cx),
5992 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
5993 );
5994
5995 view.move_to_end(&MoveToEnd, cx);
5996 assert_eq!(
5997 view.selected_display_ranges(cx),
5998 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
5999 );
6000
6001 view.move_to_beginning(&MoveToBeginning, cx);
6002 assert_eq!(
6003 view.selected_display_ranges(cx),
6004 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6005 );
6006
6007 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx);
6008 view.select_to_beginning(&SelectToBeginning, cx);
6009 assert_eq!(
6010 view.selected_display_ranges(cx),
6011 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
6012 );
6013
6014 view.select_to_end(&SelectToEnd, cx);
6015 assert_eq!(
6016 view.selected_display_ranges(cx),
6017 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
6018 );
6019 });
6020 }
6021
6022 #[gpui::test]
6023 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
6024 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
6025 let settings = EditorSettings::test(&cx);
6026 let (_, view) = cx.add_window(Default::default(), |cx| {
6027 build_editor(buffer.clone(), settings, cx)
6028 });
6029
6030 assert_eq!('ⓐ'.len_utf8(), 3);
6031 assert_eq!('α'.len_utf8(), 2);
6032
6033 view.update(cx, |view, cx| {
6034 view.fold_ranges(
6035 vec![
6036 Point::new(0, 6)..Point::new(0, 12),
6037 Point::new(1, 2)..Point::new(1, 4),
6038 Point::new(2, 4)..Point::new(2, 8),
6039 ],
6040 cx,
6041 );
6042 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
6043
6044 view.move_right(&MoveRight, cx);
6045 assert_eq!(
6046 view.selected_display_ranges(cx),
6047 &[empty_range(0, "ⓐ".len())]
6048 );
6049 view.move_right(&MoveRight, cx);
6050 assert_eq!(
6051 view.selected_display_ranges(cx),
6052 &[empty_range(0, "ⓐⓑ".len())]
6053 );
6054 view.move_right(&MoveRight, cx);
6055 assert_eq!(
6056 view.selected_display_ranges(cx),
6057 &[empty_range(0, "ⓐⓑ…".len())]
6058 );
6059
6060 view.move_down(&MoveDown, cx);
6061 assert_eq!(
6062 view.selected_display_ranges(cx),
6063 &[empty_range(1, "ab…".len())]
6064 );
6065 view.move_left(&MoveLeft, cx);
6066 assert_eq!(
6067 view.selected_display_ranges(cx),
6068 &[empty_range(1, "ab".len())]
6069 );
6070 view.move_left(&MoveLeft, cx);
6071 assert_eq!(
6072 view.selected_display_ranges(cx),
6073 &[empty_range(1, "a".len())]
6074 );
6075
6076 view.move_down(&MoveDown, cx);
6077 assert_eq!(
6078 view.selected_display_ranges(cx),
6079 &[empty_range(2, "α".len())]
6080 );
6081 view.move_right(&MoveRight, cx);
6082 assert_eq!(
6083 view.selected_display_ranges(cx),
6084 &[empty_range(2, "αβ".len())]
6085 );
6086 view.move_right(&MoveRight, cx);
6087 assert_eq!(
6088 view.selected_display_ranges(cx),
6089 &[empty_range(2, "αβ…".len())]
6090 );
6091 view.move_right(&MoveRight, cx);
6092 assert_eq!(
6093 view.selected_display_ranges(cx),
6094 &[empty_range(2, "αβ…ε".len())]
6095 );
6096
6097 view.move_up(&MoveUp, cx);
6098 assert_eq!(
6099 view.selected_display_ranges(cx),
6100 &[empty_range(1, "ab…e".len())]
6101 );
6102 view.move_up(&MoveUp, cx);
6103 assert_eq!(
6104 view.selected_display_ranges(cx),
6105 &[empty_range(0, "ⓐⓑ…ⓔ".len())]
6106 );
6107 view.move_left(&MoveLeft, cx);
6108 assert_eq!(
6109 view.selected_display_ranges(cx),
6110 &[empty_range(0, "ⓐⓑ…".len())]
6111 );
6112 view.move_left(&MoveLeft, cx);
6113 assert_eq!(
6114 view.selected_display_ranges(cx),
6115 &[empty_range(0, "ⓐⓑ".len())]
6116 );
6117 view.move_left(&MoveLeft, cx);
6118 assert_eq!(
6119 view.selected_display_ranges(cx),
6120 &[empty_range(0, "ⓐ".len())]
6121 );
6122 });
6123 }
6124
6125 #[gpui::test]
6126 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
6127 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
6128 let settings = EditorSettings::test(&cx);
6129 let (_, view) = cx.add_window(Default::default(), |cx| {
6130 build_editor(buffer.clone(), settings, cx)
6131 });
6132 view.update(cx, |view, cx| {
6133 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx);
6134 view.move_down(&MoveDown, cx);
6135 assert_eq!(
6136 view.selected_display_ranges(cx),
6137 &[empty_range(1, "abcd".len())]
6138 );
6139
6140 view.move_down(&MoveDown, cx);
6141 assert_eq!(
6142 view.selected_display_ranges(cx),
6143 &[empty_range(2, "αβγ".len())]
6144 );
6145
6146 view.move_down(&MoveDown, cx);
6147 assert_eq!(
6148 view.selected_display_ranges(cx),
6149 &[empty_range(3, "abcd".len())]
6150 );
6151
6152 view.move_down(&MoveDown, cx);
6153 assert_eq!(
6154 view.selected_display_ranges(cx),
6155 &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
6156 );
6157
6158 view.move_up(&MoveUp, cx);
6159 assert_eq!(
6160 view.selected_display_ranges(cx),
6161 &[empty_range(3, "abcd".len())]
6162 );
6163
6164 view.move_up(&MoveUp, cx);
6165 assert_eq!(
6166 view.selected_display_ranges(cx),
6167 &[empty_range(2, "αβγ".len())]
6168 );
6169 });
6170 }
6171
6172 #[gpui::test]
6173 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
6174 let buffer = MultiBuffer::build_simple("abc\n def", cx);
6175 let settings = EditorSettings::test(&cx);
6176 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6177 view.update(cx, |view, cx| {
6178 view.select_display_ranges(
6179 &[
6180 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6181 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
6182 ],
6183 cx,
6184 );
6185 });
6186
6187 view.update(cx, |view, cx| {
6188 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6189 assert_eq!(
6190 view.selected_display_ranges(cx),
6191 &[
6192 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6193 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6194 ]
6195 );
6196 });
6197
6198 view.update(cx, |view, cx| {
6199 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6200 assert_eq!(
6201 view.selected_display_ranges(cx),
6202 &[
6203 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6204 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6205 ]
6206 );
6207 });
6208
6209 view.update(cx, |view, cx| {
6210 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6211 assert_eq!(
6212 view.selected_display_ranges(cx),
6213 &[
6214 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6215 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6216 ]
6217 );
6218 });
6219
6220 view.update(cx, |view, cx| {
6221 view.move_to_end_of_line(&MoveToEndOfLine, cx);
6222 assert_eq!(
6223 view.selected_display_ranges(cx),
6224 &[
6225 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6226 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6227 ]
6228 );
6229 });
6230
6231 // Moving to the end of line again is a no-op.
6232 view.update(cx, |view, cx| {
6233 view.move_to_end_of_line(&MoveToEndOfLine, cx);
6234 assert_eq!(
6235 view.selected_display_ranges(cx),
6236 &[
6237 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6238 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6239 ]
6240 );
6241 });
6242
6243 view.update(cx, |view, cx| {
6244 view.move_left(&MoveLeft, cx);
6245 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6246 assert_eq!(
6247 view.selected_display_ranges(cx),
6248 &[
6249 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6250 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
6251 ]
6252 );
6253 });
6254
6255 view.update(cx, |view, cx| {
6256 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6257 assert_eq!(
6258 view.selected_display_ranges(cx),
6259 &[
6260 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6261 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
6262 ]
6263 );
6264 });
6265
6266 view.update(cx, |view, cx| {
6267 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6268 assert_eq!(
6269 view.selected_display_ranges(cx),
6270 &[
6271 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6272 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
6273 ]
6274 );
6275 });
6276
6277 view.update(cx, |view, cx| {
6278 view.select_to_end_of_line(&SelectToEndOfLine(true), cx);
6279 assert_eq!(
6280 view.selected_display_ranges(cx),
6281 &[
6282 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
6283 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
6284 ]
6285 );
6286 });
6287
6288 view.update(cx, |view, cx| {
6289 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
6290 assert_eq!(view.display_text(cx), "ab\n de");
6291 assert_eq!(
6292 view.selected_display_ranges(cx),
6293 &[
6294 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6295 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
6296 ]
6297 );
6298 });
6299
6300 view.update(cx, |view, cx| {
6301 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
6302 assert_eq!(view.display_text(cx), "\n");
6303 assert_eq!(
6304 view.selected_display_ranges(cx),
6305 &[
6306 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6307 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6308 ]
6309 );
6310 });
6311 }
6312
6313 #[gpui::test]
6314 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
6315 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
6316 let settings = EditorSettings::test(&cx);
6317 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6318 view.update(cx, |view, cx| {
6319 view.select_display_ranges(
6320 &[
6321 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
6322 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
6323 ],
6324 cx,
6325 );
6326 });
6327
6328 view.update(cx, |view, cx| {
6329 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6330 assert_eq!(
6331 view.selected_display_ranges(cx),
6332 &[
6333 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
6334 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
6335 ]
6336 );
6337 });
6338
6339 view.update(cx, |view, cx| {
6340 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6341 assert_eq!(
6342 view.selected_display_ranges(cx),
6343 &[
6344 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
6345 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2),
6346 ]
6347 );
6348 });
6349
6350 view.update(cx, |view, cx| {
6351 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6352 assert_eq!(
6353 view.selected_display_ranges(cx),
6354 &[
6355 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
6356 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
6357 ]
6358 );
6359 });
6360
6361 view.update(cx, |view, cx| {
6362 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6363 assert_eq!(
6364 view.selected_display_ranges(cx),
6365 &[
6366 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6367 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6368 ]
6369 );
6370 });
6371
6372 view.update(cx, |view, cx| {
6373 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6374 assert_eq!(
6375 view.selected_display_ranges(cx),
6376 &[
6377 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6378 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 23),
6379 ]
6380 );
6381 });
6382
6383 view.update(cx, |view, cx| {
6384 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6385 assert_eq!(
6386 view.selected_display_ranges(cx),
6387 &[
6388 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6389 DisplayPoint::new(0, 24)..DisplayPoint::new(0, 24),
6390 ]
6391 );
6392 });
6393
6394 view.update(cx, |view, cx| {
6395 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6396 assert_eq!(
6397 view.selected_display_ranges(cx),
6398 &[
6399 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
6400 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6401 ]
6402 );
6403 });
6404
6405 view.update(cx, |view, cx| {
6406 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6407 assert_eq!(
6408 view.selected_display_ranges(cx),
6409 &[
6410 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
6411 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
6412 ]
6413 );
6414 });
6415
6416 view.update(cx, |view, cx| {
6417 view.move_right(&MoveRight, cx);
6418 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
6419 assert_eq!(
6420 view.selected_display_ranges(cx),
6421 &[
6422 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
6423 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
6424 ]
6425 );
6426 });
6427
6428 view.update(cx, |view, cx| {
6429 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
6430 assert_eq!(
6431 view.selected_display_ranges(cx),
6432 &[
6433 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 7),
6434 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 2),
6435 ]
6436 );
6437 });
6438
6439 view.update(cx, |view, cx| {
6440 view.select_to_next_word_boundary(&SelectToNextWordBoundary, cx);
6441 assert_eq!(
6442 view.selected_display_ranges(cx),
6443 &[
6444 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
6445 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
6446 ]
6447 );
6448 });
6449 }
6450
6451 #[gpui::test]
6452 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
6453 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
6454 let settings = EditorSettings::test(&cx);
6455 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6456
6457 view.update(cx, |view, cx| {
6458 view.set_wrap_width(Some(140.), cx);
6459 assert_eq!(
6460 view.display_text(cx),
6461 "use one::{\n two::three::\n four::five\n};"
6462 );
6463
6464 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx);
6465
6466 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6467 assert_eq!(
6468 view.selected_display_ranges(cx),
6469 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
6470 );
6471
6472 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6473 assert_eq!(
6474 view.selected_display_ranges(cx),
6475 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
6476 );
6477
6478 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6479 assert_eq!(
6480 view.selected_display_ranges(cx),
6481 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
6482 );
6483
6484 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6485 assert_eq!(
6486 view.selected_display_ranges(cx),
6487 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
6488 );
6489
6490 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6491 assert_eq!(
6492 view.selected_display_ranges(cx),
6493 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
6494 );
6495
6496 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6497 assert_eq!(
6498 view.selected_display_ranges(cx),
6499 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
6500 );
6501 });
6502 }
6503
6504 #[gpui::test]
6505 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
6506 let buffer = MultiBuffer::build_simple("one two three four", cx);
6507 let settings = EditorSettings::test(&cx);
6508 let (_, view) = cx.add_window(Default::default(), |cx| {
6509 build_editor(buffer.clone(), settings, cx)
6510 });
6511
6512 view.update(cx, |view, cx| {
6513 view.select_display_ranges(
6514 &[
6515 // an empty selection - the preceding word fragment is deleted
6516 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6517 // characters selected - they are deleted
6518 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
6519 ],
6520 cx,
6521 );
6522 view.delete_to_previous_word_boundary(&DeleteToPreviousWordBoundary, cx);
6523 });
6524
6525 assert_eq!(buffer.read(cx).read(cx).text(), "e two te four");
6526
6527 view.update(cx, |view, cx| {
6528 view.select_display_ranges(
6529 &[
6530 // an empty selection - the following word fragment is deleted
6531 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6532 // characters selected - they are deleted
6533 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
6534 ],
6535 cx,
6536 );
6537 view.delete_to_next_word_boundary(&DeleteToNextWordBoundary, cx);
6538 });
6539
6540 assert_eq!(buffer.read(cx).read(cx).text(), "e t te our");
6541 }
6542
6543 #[gpui::test]
6544 fn test_newline(cx: &mut gpui::MutableAppContext) {
6545 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
6546 let settings = EditorSettings::test(&cx);
6547 let (_, view) = cx.add_window(Default::default(), |cx| {
6548 build_editor(buffer.clone(), settings, cx)
6549 });
6550
6551 view.update(cx, |view, cx| {
6552 view.select_display_ranges(
6553 &[
6554 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6555 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6556 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
6557 ],
6558 cx,
6559 );
6560
6561 view.newline(&Newline, cx);
6562 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
6563 });
6564 }
6565
6566 #[gpui::test]
6567 fn test_newline_with_old_selections(cx: &mut gpui::MutableAppContext) {
6568 let buffer = MultiBuffer::build_simple(
6569 "
6570 a
6571 b(
6572 X
6573 )
6574 c(
6575 X
6576 )
6577 "
6578 .unindent()
6579 .as_str(),
6580 cx,
6581 );
6582
6583 let settings = EditorSettings::test(&cx);
6584 let (_, editor) = cx.add_window(Default::default(), |cx| {
6585 let mut editor = build_editor(buffer.clone(), settings, cx);
6586 editor.select_ranges(
6587 [
6588 Point::new(2, 4)..Point::new(2, 5),
6589 Point::new(5, 4)..Point::new(5, 5),
6590 ],
6591 None,
6592 cx,
6593 );
6594 editor
6595 });
6596
6597 // Edit the buffer directly, deleting ranges surrounding the editor's selections
6598 buffer.update(cx, |buffer, cx| {
6599 buffer.edit(
6600 [
6601 Point::new(1, 2)..Point::new(3, 0),
6602 Point::new(4, 2)..Point::new(6, 0),
6603 ],
6604 "",
6605 cx,
6606 );
6607 assert_eq!(
6608 buffer.read(cx).text(),
6609 "
6610 a
6611 b()
6612 c()
6613 "
6614 .unindent()
6615 );
6616 });
6617
6618 editor.update(cx, |editor, cx| {
6619 assert_eq!(
6620 editor.selected_ranges(cx),
6621 &[
6622 Point::new(1, 2)..Point::new(1, 2),
6623 Point::new(2, 2)..Point::new(2, 2),
6624 ],
6625 );
6626
6627 editor.newline(&Newline, cx);
6628 assert_eq!(
6629 editor.text(cx),
6630 "
6631 a
6632 b(
6633 )
6634 c(
6635 )
6636 "
6637 .unindent()
6638 );
6639
6640 // The selections are moved after the inserted newlines
6641 assert_eq!(
6642 editor.selected_ranges(cx),
6643 &[
6644 Point::new(2, 0)..Point::new(2, 0),
6645 Point::new(4, 0)..Point::new(4, 0),
6646 ],
6647 );
6648 });
6649 }
6650
6651 #[gpui::test]
6652 fn test_insert_with_old_selections(cx: &mut gpui::MutableAppContext) {
6653 let buffer = MultiBuffer::build_simple("a( X ), b( Y ), c( Z )", cx);
6654
6655 let settings = EditorSettings::test(&cx);
6656 let (_, editor) = cx.add_window(Default::default(), |cx| {
6657 let mut editor = build_editor(buffer.clone(), settings, cx);
6658 editor.select_ranges([3..4, 11..12, 19..20], None, cx);
6659 editor
6660 });
6661
6662 // Edit the buffer directly, deleting ranges surrounding the editor's selections
6663 buffer.update(cx, |buffer, cx| {
6664 buffer.edit([2..5, 10..13, 18..21], "", cx);
6665 assert_eq!(buffer.read(cx).text(), "a(), b(), c()".unindent());
6666 });
6667
6668 editor.update(cx, |editor, cx| {
6669 assert_eq!(editor.selected_ranges(cx), &[2..2, 7..7, 12..12],);
6670
6671 editor.insert("Z", cx);
6672 assert_eq!(editor.text(cx), "a(Z), b(Z), c(Z)");
6673
6674 // The selections are moved after the inserted characters
6675 assert_eq!(editor.selected_ranges(cx), &[3..3, 9..9, 15..15],);
6676 });
6677 }
6678
6679 #[gpui::test]
6680 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
6681 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
6682 let settings = EditorSettings::test(&cx);
6683 let (_, view) = cx.add_window(Default::default(), |cx| {
6684 build_editor(buffer.clone(), settings, cx)
6685 });
6686
6687 view.update(cx, |view, cx| {
6688 // two selections on the same line
6689 view.select_display_ranges(
6690 &[
6691 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
6692 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
6693 ],
6694 cx,
6695 );
6696
6697 // indent from mid-tabstop to full tabstop
6698 view.tab(&Tab, cx);
6699 assert_eq!(view.text(cx), " one two\nthree\n four");
6700 assert_eq!(
6701 view.selected_display_ranges(cx),
6702 &[
6703 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
6704 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
6705 ]
6706 );
6707
6708 // outdent from 1 tabstop to 0 tabstops
6709 view.outdent(&Outdent, cx);
6710 assert_eq!(view.text(cx), "one two\nthree\n four");
6711 assert_eq!(
6712 view.selected_display_ranges(cx),
6713 &[
6714 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
6715 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
6716 ]
6717 );
6718
6719 // select across line ending
6720 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx);
6721
6722 // indent and outdent affect only the preceding line
6723 view.tab(&Tab, cx);
6724 assert_eq!(view.text(cx), "one two\n three\n four");
6725 assert_eq!(
6726 view.selected_display_ranges(cx),
6727 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
6728 );
6729 view.outdent(&Outdent, cx);
6730 assert_eq!(view.text(cx), "one two\nthree\n four");
6731 assert_eq!(
6732 view.selected_display_ranges(cx),
6733 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
6734 );
6735
6736 // Ensure that indenting/outdenting works when the cursor is at column 0.
6737 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
6738 view.tab(&Tab, cx);
6739 assert_eq!(view.text(cx), "one two\n three\n four");
6740 assert_eq!(
6741 view.selected_display_ranges(cx),
6742 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
6743 );
6744
6745 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
6746 view.outdent(&Outdent, cx);
6747 assert_eq!(view.text(cx), "one two\nthree\n four");
6748 assert_eq!(
6749 view.selected_display_ranges(cx),
6750 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6751 );
6752 });
6753 }
6754
6755 #[gpui::test]
6756 fn test_backspace(cx: &mut gpui::MutableAppContext) {
6757 let buffer =
6758 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
6759 let settings = EditorSettings::test(&cx);
6760 let (_, view) = cx.add_window(Default::default(), |cx| {
6761 build_editor(buffer.clone(), settings, cx)
6762 });
6763
6764 view.update(cx, |view, cx| {
6765 view.select_display_ranges(
6766 &[
6767 // an empty selection - the preceding character is deleted
6768 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6769 // one character selected - it is deleted
6770 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
6771 // a line suffix selected - it is deleted
6772 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
6773 ],
6774 cx,
6775 );
6776 view.backspace(&Backspace, cx);
6777 });
6778
6779 assert_eq!(
6780 buffer.read(cx).read(cx).text(),
6781 "oe two three\nfou five six\nseven ten\n"
6782 );
6783 }
6784
6785 #[gpui::test]
6786 fn test_delete(cx: &mut gpui::MutableAppContext) {
6787 let buffer =
6788 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
6789 let settings = EditorSettings::test(&cx);
6790 let (_, view) = cx.add_window(Default::default(), |cx| {
6791 build_editor(buffer.clone(), settings, cx)
6792 });
6793
6794 view.update(cx, |view, cx| {
6795 view.select_display_ranges(
6796 &[
6797 // an empty selection - the following character is deleted
6798 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6799 // one character selected - it is deleted
6800 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
6801 // a line suffix selected - it is deleted
6802 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
6803 ],
6804 cx,
6805 );
6806 view.delete(&Delete, cx);
6807 });
6808
6809 assert_eq!(
6810 buffer.read(cx).read(cx).text(),
6811 "on two three\nfou five six\nseven ten\n"
6812 );
6813 }
6814
6815 #[gpui::test]
6816 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
6817 let settings = EditorSettings::test(&cx);
6818 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
6819 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6820 view.update(cx, |view, cx| {
6821 view.select_display_ranges(
6822 &[
6823 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6824 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
6825 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6826 ],
6827 cx,
6828 );
6829 view.delete_line(&DeleteLine, cx);
6830 assert_eq!(view.display_text(cx), "ghi");
6831 assert_eq!(
6832 view.selected_display_ranges(cx),
6833 vec![
6834 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6835 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
6836 ]
6837 );
6838 });
6839
6840 let settings = EditorSettings::test(&cx);
6841 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
6842 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6843 view.update(cx, |view, cx| {
6844 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx);
6845 view.delete_line(&DeleteLine, cx);
6846 assert_eq!(view.display_text(cx), "ghi\n");
6847 assert_eq!(
6848 view.selected_display_ranges(cx),
6849 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
6850 );
6851 });
6852 }
6853
6854 #[gpui::test]
6855 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
6856 let settings = EditorSettings::test(&cx);
6857 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
6858 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6859 view.update(cx, |view, cx| {
6860 view.select_display_ranges(
6861 &[
6862 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
6863 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6864 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6865 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6866 ],
6867 cx,
6868 );
6869 view.duplicate_line(&DuplicateLine, cx);
6870 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
6871 assert_eq!(
6872 view.selected_display_ranges(cx),
6873 vec![
6874 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
6875 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6876 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6877 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
6878 ]
6879 );
6880 });
6881
6882 let settings = EditorSettings::test(&cx);
6883 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
6884 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6885 view.update(cx, |view, cx| {
6886 view.select_display_ranges(
6887 &[
6888 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
6889 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
6890 ],
6891 cx,
6892 );
6893 view.duplicate_line(&DuplicateLine, cx);
6894 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
6895 assert_eq!(
6896 view.selected_display_ranges(cx),
6897 vec![
6898 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
6899 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
6900 ]
6901 );
6902 });
6903 }
6904
6905 #[gpui::test]
6906 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
6907 let settings = EditorSettings::test(&cx);
6908 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
6909 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6910 view.update(cx, |view, cx| {
6911 view.fold_ranges(
6912 vec![
6913 Point::new(0, 2)..Point::new(1, 2),
6914 Point::new(2, 3)..Point::new(4, 1),
6915 Point::new(7, 0)..Point::new(8, 4),
6916 ],
6917 cx,
6918 );
6919 view.select_display_ranges(
6920 &[
6921 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6922 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
6923 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
6924 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
6925 ],
6926 cx,
6927 );
6928 assert_eq!(
6929 view.display_text(cx),
6930 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
6931 );
6932
6933 view.move_line_up(&MoveLineUp, cx);
6934 assert_eq!(
6935 view.display_text(cx),
6936 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
6937 );
6938 assert_eq!(
6939 view.selected_display_ranges(cx),
6940 vec![
6941 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6942 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6943 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
6944 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
6945 ]
6946 );
6947 });
6948
6949 view.update(cx, |view, cx| {
6950 view.move_line_down(&MoveLineDown, cx);
6951 assert_eq!(
6952 view.display_text(cx),
6953 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
6954 );
6955 assert_eq!(
6956 view.selected_display_ranges(cx),
6957 vec![
6958 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6959 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
6960 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
6961 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
6962 ]
6963 );
6964 });
6965
6966 view.update(cx, |view, cx| {
6967 view.move_line_down(&MoveLineDown, cx);
6968 assert_eq!(
6969 view.display_text(cx),
6970 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
6971 );
6972 assert_eq!(
6973 view.selected_display_ranges(cx),
6974 vec![
6975 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6976 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
6977 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
6978 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
6979 ]
6980 );
6981 });
6982
6983 view.update(cx, |view, cx| {
6984 view.move_line_up(&MoveLineUp, cx);
6985 assert_eq!(
6986 view.display_text(cx),
6987 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
6988 );
6989 assert_eq!(
6990 view.selected_display_ranges(cx),
6991 vec![
6992 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6993 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6994 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
6995 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
6996 ]
6997 );
6998 });
6999 }
7000
7001 #[gpui::test]
7002 fn test_move_line_up_down_with_blocks(cx: &mut gpui::MutableAppContext) {
7003 let settings = EditorSettings::test(&cx);
7004 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
7005 let snapshot = buffer.read(cx).snapshot(cx);
7006 let (_, editor) =
7007 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7008 editor.update(cx, |editor, cx| {
7009 editor.insert_blocks(
7010 [BlockProperties {
7011 position: snapshot.anchor_after(Point::new(2, 0)),
7012 disposition: BlockDisposition::Below,
7013 height: 1,
7014 render: Arc::new(|_| Empty::new().boxed()),
7015 }],
7016 cx,
7017 );
7018 editor.select_ranges([Point::new(2, 0)..Point::new(2, 0)], None, cx);
7019 editor.move_line_down(&MoveLineDown, cx);
7020 });
7021 }
7022
7023 #[gpui::test]
7024 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
7025 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
7026 let settings = EditorSettings::test(&cx);
7027 let view = cx
7028 .add_window(Default::default(), |cx| {
7029 build_editor(buffer.clone(), settings, cx)
7030 })
7031 .1;
7032
7033 // Cut with three selections. Clipboard text is divided into three slices.
7034 view.update(cx, |view, cx| {
7035 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
7036 view.cut(&Cut, cx);
7037 assert_eq!(view.display_text(cx), "two four six ");
7038 });
7039
7040 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
7041 view.update(cx, |view, cx| {
7042 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
7043 view.paste(&Paste, cx);
7044 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
7045 assert_eq!(
7046 view.selected_display_ranges(cx),
7047 &[
7048 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
7049 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
7050 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
7051 ]
7052 );
7053 });
7054
7055 // Paste again but with only two cursors. Since the number of cursors doesn't
7056 // match the number of slices in the clipboard, the entire clipboard text
7057 // is pasted at each cursor.
7058 view.update(cx, |view, cx| {
7059 view.select_ranges(vec![0..0, 31..31], None, cx);
7060 view.handle_input(&Input("( ".into()), cx);
7061 view.paste(&Paste, cx);
7062 view.handle_input(&Input(") ".into()), cx);
7063 assert_eq!(
7064 view.display_text(cx),
7065 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7066 );
7067 });
7068
7069 view.update(cx, |view, cx| {
7070 view.select_ranges(vec![0..0], None, cx);
7071 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
7072 assert_eq!(
7073 view.display_text(cx),
7074 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7075 );
7076 });
7077
7078 // Cut with three selections, one of which is full-line.
7079 view.update(cx, |view, cx| {
7080 view.select_display_ranges(
7081 &[
7082 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
7083 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7084 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
7085 ],
7086 cx,
7087 );
7088 view.cut(&Cut, cx);
7089 assert_eq!(
7090 view.display_text(cx),
7091 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7092 );
7093 });
7094
7095 // Paste with three selections, noticing how the copied selection that was full-line
7096 // gets inserted before the second cursor.
7097 view.update(cx, |view, cx| {
7098 view.select_display_ranges(
7099 &[
7100 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7101 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7102 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
7103 ],
7104 cx,
7105 );
7106 view.paste(&Paste, cx);
7107 assert_eq!(
7108 view.display_text(cx),
7109 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
7110 );
7111 assert_eq!(
7112 view.selected_display_ranges(cx),
7113 &[
7114 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7115 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7116 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
7117 ]
7118 );
7119 });
7120
7121 // Copy with a single cursor only, which writes the whole line into the clipboard.
7122 view.update(cx, |view, cx| {
7123 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx);
7124 view.copy(&Copy, cx);
7125 });
7126
7127 // Paste with three selections, noticing how the copied full-line selection is inserted
7128 // before the empty selections but replaces the selection that is non-empty.
7129 view.update(cx, |view, cx| {
7130 view.select_display_ranges(
7131 &[
7132 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7133 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
7134 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7135 ],
7136 cx,
7137 );
7138 view.paste(&Paste, cx);
7139 assert_eq!(
7140 view.display_text(cx),
7141 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
7142 );
7143 assert_eq!(
7144 view.selected_display_ranges(cx),
7145 &[
7146 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7147 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7148 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
7149 ]
7150 );
7151 });
7152 }
7153
7154 #[gpui::test]
7155 fn test_select_all(cx: &mut gpui::MutableAppContext) {
7156 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
7157 let settings = EditorSettings::test(&cx);
7158 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7159 view.update(cx, |view, cx| {
7160 view.select_all(&SelectAll, cx);
7161 assert_eq!(
7162 view.selected_display_ranges(cx),
7163 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
7164 );
7165 });
7166 }
7167
7168 #[gpui::test]
7169 fn test_select_line(cx: &mut gpui::MutableAppContext) {
7170 let settings = EditorSettings::test(&cx);
7171 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
7172 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7173 view.update(cx, |view, cx| {
7174 view.select_display_ranges(
7175 &[
7176 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7177 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7178 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7179 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
7180 ],
7181 cx,
7182 );
7183 view.select_line(&SelectLine, cx);
7184 assert_eq!(
7185 view.selected_display_ranges(cx),
7186 vec![
7187 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
7188 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
7189 ]
7190 );
7191 });
7192
7193 view.update(cx, |view, cx| {
7194 view.select_line(&SelectLine, cx);
7195 assert_eq!(
7196 view.selected_display_ranges(cx),
7197 vec![
7198 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
7199 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
7200 ]
7201 );
7202 });
7203
7204 view.update(cx, |view, cx| {
7205 view.select_line(&SelectLine, cx);
7206 assert_eq!(
7207 view.selected_display_ranges(cx),
7208 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
7209 );
7210 });
7211 }
7212
7213 #[gpui::test]
7214 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
7215 let settings = EditorSettings::test(&cx);
7216 let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
7217 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7218 view.update(cx, |view, cx| {
7219 view.fold_ranges(
7220 vec![
7221 Point::new(0, 2)..Point::new(1, 2),
7222 Point::new(2, 3)..Point::new(4, 1),
7223 Point::new(7, 0)..Point::new(8, 4),
7224 ],
7225 cx,
7226 );
7227 view.select_display_ranges(
7228 &[
7229 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7230 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7231 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7232 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
7233 ],
7234 cx,
7235 );
7236 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
7237 });
7238
7239 view.update(cx, |view, cx| {
7240 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
7241 assert_eq!(
7242 view.display_text(cx),
7243 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
7244 );
7245 assert_eq!(
7246 view.selected_display_ranges(cx),
7247 [
7248 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7249 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7250 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
7251 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
7252 ]
7253 );
7254 });
7255
7256 view.update(cx, |view, cx| {
7257 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx);
7258 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
7259 assert_eq!(
7260 view.display_text(cx),
7261 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
7262 );
7263 assert_eq!(
7264 view.selected_display_ranges(cx),
7265 [
7266 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
7267 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
7268 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7269 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
7270 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
7271 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
7272 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
7273 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
7274 ]
7275 );
7276 });
7277 }
7278
7279 #[gpui::test]
7280 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
7281 let settings = EditorSettings::test(&cx);
7282 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
7283 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7284
7285 view.update(cx, |view, cx| {
7286 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx);
7287 });
7288 view.update(cx, |view, cx| {
7289 view.add_selection_above(&AddSelectionAbove, cx);
7290 assert_eq!(
7291 view.selected_display_ranges(cx),
7292 vec![
7293 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7294 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
7295 ]
7296 );
7297 });
7298
7299 view.update(cx, |view, cx| {
7300 view.add_selection_above(&AddSelectionAbove, cx);
7301 assert_eq!(
7302 view.selected_display_ranges(cx),
7303 vec![
7304 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7305 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
7306 ]
7307 );
7308 });
7309
7310 view.update(cx, |view, cx| {
7311 view.add_selection_below(&AddSelectionBelow, cx);
7312 assert_eq!(
7313 view.selected_display_ranges(cx),
7314 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
7315 );
7316 });
7317
7318 view.update(cx, |view, cx| {
7319 view.add_selection_below(&AddSelectionBelow, cx);
7320 assert_eq!(
7321 view.selected_display_ranges(cx),
7322 vec![
7323 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7324 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
7325 ]
7326 );
7327 });
7328
7329 view.update(cx, |view, cx| {
7330 view.add_selection_below(&AddSelectionBelow, cx);
7331 assert_eq!(
7332 view.selected_display_ranges(cx),
7333 vec![
7334 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7335 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
7336 ]
7337 );
7338 });
7339
7340 view.update(cx, |view, cx| {
7341 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx);
7342 });
7343 view.update(cx, |view, cx| {
7344 view.add_selection_below(&AddSelectionBelow, cx);
7345 assert_eq!(
7346 view.selected_display_ranges(cx),
7347 vec![
7348 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7349 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
7350 ]
7351 );
7352 });
7353
7354 view.update(cx, |view, cx| {
7355 view.add_selection_below(&AddSelectionBelow, cx);
7356 assert_eq!(
7357 view.selected_display_ranges(cx),
7358 vec![
7359 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7360 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
7361 ]
7362 );
7363 });
7364
7365 view.update(cx, |view, cx| {
7366 view.add_selection_above(&AddSelectionAbove, cx);
7367 assert_eq!(
7368 view.selected_display_ranges(cx),
7369 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
7370 );
7371 });
7372
7373 view.update(cx, |view, cx| {
7374 view.add_selection_above(&AddSelectionAbove, cx);
7375 assert_eq!(
7376 view.selected_display_ranges(cx),
7377 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
7378 );
7379 });
7380
7381 view.update(cx, |view, cx| {
7382 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx);
7383 view.add_selection_below(&AddSelectionBelow, cx);
7384 assert_eq!(
7385 view.selected_display_ranges(cx),
7386 vec![
7387 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7388 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7389 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7390 ]
7391 );
7392 });
7393
7394 view.update(cx, |view, cx| {
7395 view.add_selection_below(&AddSelectionBelow, cx);
7396 assert_eq!(
7397 view.selected_display_ranges(cx),
7398 vec![
7399 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7400 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7401 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7402 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
7403 ]
7404 );
7405 });
7406
7407 view.update(cx, |view, cx| {
7408 view.add_selection_above(&AddSelectionAbove, cx);
7409 assert_eq!(
7410 view.selected_display_ranges(cx),
7411 vec![
7412 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7413 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7414 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7415 ]
7416 );
7417 });
7418
7419 view.update(cx, |view, cx| {
7420 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx);
7421 });
7422 view.update(cx, |view, cx| {
7423 view.add_selection_above(&AddSelectionAbove, cx);
7424 assert_eq!(
7425 view.selected_display_ranges(cx),
7426 vec![
7427 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
7428 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
7429 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
7430 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
7431 ]
7432 );
7433 });
7434
7435 view.update(cx, |view, cx| {
7436 view.add_selection_below(&AddSelectionBelow, cx);
7437 assert_eq!(
7438 view.selected_display_ranges(cx),
7439 vec![
7440 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
7441 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
7442 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
7443 ]
7444 );
7445 });
7446 }
7447
7448 #[gpui::test]
7449 async fn test_select_larger_smaller_syntax_node(mut cx: gpui::TestAppContext) {
7450 let settings = cx.read(EditorSettings::test);
7451 let language = Arc::new(Language::new(
7452 LanguageConfig::default(),
7453 Some(tree_sitter_rust::language()),
7454 ));
7455
7456 let text = r#"
7457 use mod1::mod2::{mod3, mod4};
7458
7459 fn fn_1(param1: bool, param2: &str) {
7460 let var1 = "text";
7461 }
7462 "#
7463 .unindent();
7464
7465 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7466 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7467 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7468 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
7469 .await;
7470
7471 view.update(&mut cx, |view, cx| {
7472 view.select_display_ranges(
7473 &[
7474 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7475 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7476 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7477 ],
7478 cx,
7479 );
7480 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7481 });
7482 assert_eq!(
7483 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7484 &[
7485 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
7486 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7487 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
7488 ]
7489 );
7490
7491 view.update(&mut cx, |view, cx| {
7492 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7493 });
7494 assert_eq!(
7495 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7496 &[
7497 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
7498 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
7499 ]
7500 );
7501
7502 view.update(&mut cx, |view, cx| {
7503 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7504 });
7505 assert_eq!(
7506 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7507 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
7508 );
7509
7510 // Trying to expand the selected syntax node one more time has no effect.
7511 view.update(&mut cx, |view, cx| {
7512 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7513 });
7514 assert_eq!(
7515 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7516 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
7517 );
7518
7519 view.update(&mut cx, |view, cx| {
7520 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7521 });
7522 assert_eq!(
7523 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7524 &[
7525 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
7526 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
7527 ]
7528 );
7529
7530 view.update(&mut cx, |view, cx| {
7531 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7532 });
7533 assert_eq!(
7534 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7535 &[
7536 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
7537 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7538 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
7539 ]
7540 );
7541
7542 view.update(&mut cx, |view, cx| {
7543 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7544 });
7545 assert_eq!(
7546 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7547 &[
7548 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7549 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7550 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7551 ]
7552 );
7553
7554 // Trying to shrink the selected syntax node one more time has no effect.
7555 view.update(&mut cx, |view, cx| {
7556 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7557 });
7558 assert_eq!(
7559 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7560 &[
7561 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7562 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7563 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7564 ]
7565 );
7566
7567 // Ensure that we keep expanding the selection if the larger selection starts or ends within
7568 // a fold.
7569 view.update(&mut cx, |view, cx| {
7570 view.fold_ranges(
7571 vec![
7572 Point::new(0, 21)..Point::new(0, 24),
7573 Point::new(3, 20)..Point::new(3, 22),
7574 ],
7575 cx,
7576 );
7577 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7578 });
7579 assert_eq!(
7580 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7581 &[
7582 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
7583 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7584 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
7585 ]
7586 );
7587 }
7588
7589 #[gpui::test]
7590 async fn test_autoindent_selections(mut cx: gpui::TestAppContext) {
7591 let settings = cx.read(EditorSettings::test);
7592 let language = Arc::new(
7593 Language::new(
7594 LanguageConfig {
7595 brackets: vec![
7596 BracketPair {
7597 start: "{".to_string(),
7598 end: "}".to_string(),
7599 close: false,
7600 newline: true,
7601 },
7602 BracketPair {
7603 start: "(".to_string(),
7604 end: ")".to_string(),
7605 close: false,
7606 newline: true,
7607 },
7608 ],
7609 ..Default::default()
7610 },
7611 Some(tree_sitter_rust::language()),
7612 )
7613 .with_indents_query(
7614 r#"
7615 (_ "(" ")" @end) @indent
7616 (_ "{" "}" @end) @indent
7617 "#,
7618 )
7619 .unwrap(),
7620 );
7621
7622 let text = "fn a() {}";
7623
7624 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7625 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7626 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7627 editor
7628 .condition(&cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
7629 .await;
7630
7631 editor.update(&mut cx, |editor, cx| {
7632 editor.select_ranges([5..5, 8..8, 9..9], None, cx);
7633 editor.newline(&Newline, cx);
7634 assert_eq!(editor.text(cx), "fn a(\n \n) {\n \n}\n");
7635 assert_eq!(
7636 editor.selected_ranges(cx),
7637 &[
7638 Point::new(1, 4)..Point::new(1, 4),
7639 Point::new(3, 4)..Point::new(3, 4),
7640 Point::new(5, 0)..Point::new(5, 0)
7641 ]
7642 );
7643 });
7644 }
7645
7646 #[gpui::test]
7647 async fn test_autoclose_pairs(mut cx: gpui::TestAppContext) {
7648 let settings = cx.read(EditorSettings::test);
7649 let language = Arc::new(Language::new(
7650 LanguageConfig {
7651 brackets: vec![
7652 BracketPair {
7653 start: "{".to_string(),
7654 end: "}".to_string(),
7655 close: true,
7656 newline: true,
7657 },
7658 BracketPair {
7659 start: "/*".to_string(),
7660 end: " */".to_string(),
7661 close: true,
7662 newline: true,
7663 },
7664 ],
7665 ..Default::default()
7666 },
7667 Some(tree_sitter_rust::language()),
7668 ));
7669
7670 let text = r#"
7671 a
7672
7673 /
7674
7675 "#
7676 .unindent();
7677
7678 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7679 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7680 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7681 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
7682 .await;
7683
7684 view.update(&mut cx, |view, cx| {
7685 view.select_display_ranges(
7686 &[
7687 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7688 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7689 ],
7690 cx,
7691 );
7692 view.handle_input(&Input("{".to_string()), cx);
7693 view.handle_input(&Input("{".to_string()), cx);
7694 view.handle_input(&Input("{".to_string()), cx);
7695 assert_eq!(
7696 view.text(cx),
7697 "
7698 {{{}}}
7699 {{{}}}
7700 /
7701
7702 "
7703 .unindent()
7704 );
7705
7706 view.move_right(&MoveRight, cx);
7707 view.handle_input(&Input("}".to_string()), cx);
7708 view.handle_input(&Input("}".to_string()), cx);
7709 view.handle_input(&Input("}".to_string()), cx);
7710 assert_eq!(
7711 view.text(cx),
7712 "
7713 {{{}}}}
7714 {{{}}}}
7715 /
7716
7717 "
7718 .unindent()
7719 );
7720
7721 view.undo(&Undo, cx);
7722 view.handle_input(&Input("/".to_string()), cx);
7723 view.handle_input(&Input("*".to_string()), cx);
7724 assert_eq!(
7725 view.text(cx),
7726 "
7727 /* */
7728 /* */
7729 /
7730
7731 "
7732 .unindent()
7733 );
7734
7735 view.undo(&Undo, cx);
7736 view.select_display_ranges(
7737 &[
7738 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7739 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7740 ],
7741 cx,
7742 );
7743 view.handle_input(&Input("*".to_string()), cx);
7744 assert_eq!(
7745 view.text(cx),
7746 "
7747 a
7748
7749 /*
7750 *
7751 "
7752 .unindent()
7753 );
7754 });
7755 }
7756
7757 #[gpui::test]
7758 async fn test_snippets(mut cx: gpui::TestAppContext) {
7759 let settings = cx.read(EditorSettings::test);
7760
7761 let text = "
7762 a. b
7763 a. b
7764 a. b
7765 "
7766 .unindent();
7767 let buffer = cx.update(|cx| MultiBuffer::build_simple(&text, cx));
7768 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7769
7770 editor.update(&mut cx, |editor, cx| {
7771 let buffer = &editor.snapshot(cx).buffer_snapshot;
7772 let snippet = Snippet::parse("f(${1:one}, ${2:two}, ${1:three})$0").unwrap();
7773 let insertion_ranges = [
7774 Point::new(0, 2).to_offset(buffer)..Point::new(0, 2).to_offset(buffer),
7775 Point::new(1, 2).to_offset(buffer)..Point::new(1, 2).to_offset(buffer),
7776 Point::new(2, 2).to_offset(buffer)..Point::new(2, 2).to_offset(buffer),
7777 ];
7778
7779 editor
7780 .insert_snippet(&insertion_ranges, snippet, cx)
7781 .unwrap();
7782 assert_eq!(
7783 editor.text(cx),
7784 "
7785 a.f(one, two, three) b
7786 a.f(one, two, three) b
7787 a.f(one, two, three) b
7788 "
7789 .unindent()
7790 );
7791 assert_eq!(
7792 editor.selected_ranges::<Point>(cx),
7793 &[
7794 Point::new(0, 4)..Point::new(0, 7),
7795 Point::new(0, 14)..Point::new(0, 19),
7796 Point::new(1, 4)..Point::new(1, 7),
7797 Point::new(1, 14)..Point::new(1, 19),
7798 Point::new(2, 4)..Point::new(2, 7),
7799 Point::new(2, 14)..Point::new(2, 19),
7800 ]
7801 );
7802
7803 // Can't move earlier than the first tab stop
7804 editor.move_to_prev_snippet_tabstop(cx);
7805 assert_eq!(
7806 editor.selected_ranges::<Point>(cx),
7807 &[
7808 Point::new(0, 4)..Point::new(0, 7),
7809 Point::new(0, 14)..Point::new(0, 19),
7810 Point::new(1, 4)..Point::new(1, 7),
7811 Point::new(1, 14)..Point::new(1, 19),
7812 Point::new(2, 4)..Point::new(2, 7),
7813 Point::new(2, 14)..Point::new(2, 19),
7814 ]
7815 );
7816
7817 assert!(editor.move_to_next_snippet_tabstop(cx));
7818 assert_eq!(
7819 editor.selected_ranges::<Point>(cx),
7820 &[
7821 Point::new(0, 9)..Point::new(0, 12),
7822 Point::new(1, 9)..Point::new(1, 12),
7823 Point::new(2, 9)..Point::new(2, 12)
7824 ]
7825 );
7826
7827 editor.move_to_prev_snippet_tabstop(cx);
7828 assert_eq!(
7829 editor.selected_ranges::<Point>(cx),
7830 &[
7831 Point::new(0, 4)..Point::new(0, 7),
7832 Point::new(0, 14)..Point::new(0, 19),
7833 Point::new(1, 4)..Point::new(1, 7),
7834 Point::new(1, 14)..Point::new(1, 19),
7835 Point::new(2, 4)..Point::new(2, 7),
7836 Point::new(2, 14)..Point::new(2, 19),
7837 ]
7838 );
7839
7840 assert!(editor.move_to_next_snippet_tabstop(cx));
7841 assert!(editor.move_to_next_snippet_tabstop(cx));
7842 assert_eq!(
7843 editor.selected_ranges::<Point>(cx),
7844 &[
7845 Point::new(0, 20)..Point::new(0, 20),
7846 Point::new(1, 20)..Point::new(1, 20),
7847 Point::new(2, 20)..Point::new(2, 20)
7848 ]
7849 );
7850
7851 // As soon as the last tab stop is reached, snippet state is gone
7852 editor.move_to_prev_snippet_tabstop(cx);
7853 assert_eq!(
7854 editor.selected_ranges::<Point>(cx),
7855 &[
7856 Point::new(0, 20)..Point::new(0, 20),
7857 Point::new(1, 20)..Point::new(1, 20),
7858 Point::new(2, 20)..Point::new(2, 20)
7859 ]
7860 );
7861 });
7862 }
7863
7864 #[gpui::test]
7865 async fn test_completion(mut cx: gpui::TestAppContext) {
7866 let settings = cx.read(EditorSettings::test);
7867 let (language_server, mut fake) = lsp::LanguageServer::fake_with_capabilities(
7868 lsp::ServerCapabilities {
7869 completion_provider: Some(lsp::CompletionOptions {
7870 trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
7871 ..Default::default()
7872 }),
7873 ..Default::default()
7874 },
7875 cx.background(),
7876 );
7877
7878 let text = "
7879 one
7880 two
7881 three
7882 "
7883 .unindent();
7884
7885 let fs = FakeFs::new(cx.background().clone());
7886 fs.insert_file("/file", text).await;
7887
7888 let project = Project::test(fs, &mut cx);
7889
7890 let (worktree, relative_path) = project
7891 .update(&mut cx, |project, cx| {
7892 project.find_or_create_local_worktree("/file", false, cx)
7893 })
7894 .await
7895 .unwrap();
7896 let project_path = ProjectPath {
7897 worktree_id: worktree.read_with(&cx, |worktree, _| worktree.id()),
7898 path: relative_path.into(),
7899 };
7900 let buffer = project
7901 .update(&mut cx, |project, cx| project.open_buffer(project_path, cx))
7902 .await
7903 .unwrap();
7904 buffer.update(&mut cx, |buffer, cx| {
7905 buffer.set_language_server(Some(language_server), cx);
7906 });
7907
7908 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7909 buffer.next_notification(&cx).await;
7910
7911 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7912
7913 editor.update(&mut cx, |editor, cx| {
7914 editor.project = Some(project);
7915 editor.select_ranges([Point::new(0, 3)..Point::new(0, 3)], None, cx);
7916 editor.handle_input(&Input(".".to_string()), cx);
7917 });
7918
7919 handle_completion_request(
7920 &mut fake,
7921 "/file",
7922 Point::new(0, 4),
7923 vec![
7924 (Point::new(0, 4)..Point::new(0, 4), "first_completion"),
7925 (Point::new(0, 4)..Point::new(0, 4), "second_completion"),
7926 ],
7927 )
7928 .await;
7929 editor
7930 .condition(&cx, |editor, _| editor.context_menu_visible())
7931 .await;
7932
7933 let apply_additional_edits = editor.update(&mut cx, |editor, cx| {
7934 editor.move_down(&MoveDown, cx);
7935 let apply_additional_edits = editor
7936 .confirm_completion(&ConfirmCompletion(None), cx)
7937 .unwrap();
7938 assert_eq!(
7939 editor.text(cx),
7940 "
7941 one.second_completion
7942 two
7943 three
7944 "
7945 .unindent()
7946 );
7947 apply_additional_edits
7948 });
7949
7950 handle_resolve_completion_request(
7951 &mut fake,
7952 Some((Point::new(2, 5)..Point::new(2, 5), "\nadditional edit")),
7953 )
7954 .await;
7955 apply_additional_edits.await.unwrap();
7956 assert_eq!(
7957 editor.read_with(&cx, |editor, cx| editor.text(cx)),
7958 "
7959 one.second_completion
7960 two
7961 three
7962 additional edit
7963 "
7964 .unindent()
7965 );
7966
7967 editor.update(&mut cx, |editor, cx| {
7968 editor.select_ranges(
7969 [
7970 Point::new(1, 3)..Point::new(1, 3),
7971 Point::new(2, 5)..Point::new(2, 5),
7972 ],
7973 None,
7974 cx,
7975 );
7976
7977 editor.handle_input(&Input(" ".to_string()), cx);
7978 assert!(editor.context_menu.is_none());
7979 editor.handle_input(&Input("s".to_string()), cx);
7980 assert!(editor.context_menu.is_none());
7981 });
7982
7983 handle_completion_request(
7984 &mut fake,
7985 "/file",
7986 Point::new(2, 7),
7987 vec![
7988 (Point::new(2, 6)..Point::new(2, 7), "fourth_completion"),
7989 (Point::new(2, 6)..Point::new(2, 7), "fifth_completion"),
7990 (Point::new(2, 6)..Point::new(2, 7), "sixth_completion"),
7991 ],
7992 )
7993 .await;
7994 editor
7995 .condition(&cx, |editor, _| editor.context_menu_visible())
7996 .await;
7997
7998 editor.update(&mut cx, |editor, cx| {
7999 editor.handle_input(&Input("i".to_string()), cx);
8000 });
8001
8002 handle_completion_request(
8003 &mut fake,
8004 "/file",
8005 Point::new(2, 8),
8006 vec![
8007 (Point::new(2, 6)..Point::new(2, 8), "fourth_completion"),
8008 (Point::new(2, 6)..Point::new(2, 8), "fifth_completion"),
8009 (Point::new(2, 6)..Point::new(2, 8), "sixth_completion"),
8010 ],
8011 )
8012 .await;
8013 editor
8014 .condition(&cx, |editor, _| editor.context_menu_visible())
8015 .await;
8016
8017 let apply_additional_edits = editor.update(&mut cx, |editor, cx| {
8018 let apply_additional_edits = editor
8019 .confirm_completion(&ConfirmCompletion(None), cx)
8020 .unwrap();
8021 assert_eq!(
8022 editor.text(cx),
8023 "
8024 one.second_completion
8025 two sixth_completion
8026 three sixth_completion
8027 additional edit
8028 "
8029 .unindent()
8030 );
8031 apply_additional_edits
8032 });
8033 handle_resolve_completion_request(&mut fake, None).await;
8034 apply_additional_edits.await.unwrap();
8035
8036 async fn handle_completion_request(
8037 fake: &mut FakeLanguageServer,
8038 path: &'static str,
8039 position: Point,
8040 completions: Vec<(Range<Point>, &'static str)>,
8041 ) {
8042 fake.handle_request::<lsp::request::Completion, _>(move |params| {
8043 assert_eq!(
8044 params.text_document_position.text_document.uri,
8045 lsp::Url::from_file_path(path).unwrap()
8046 );
8047 assert_eq!(
8048 params.text_document_position.position,
8049 lsp::Position::new(position.row, position.column)
8050 );
8051 Some(lsp::CompletionResponse::Array(
8052 completions
8053 .iter()
8054 .map(|(range, new_text)| lsp::CompletionItem {
8055 label: new_text.to_string(),
8056 text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
8057 range: lsp::Range::new(
8058 lsp::Position::new(range.start.row, range.start.column),
8059 lsp::Position::new(range.start.row, range.start.column),
8060 ),
8061 new_text: new_text.to_string(),
8062 })),
8063 ..Default::default()
8064 })
8065 .collect(),
8066 ))
8067 })
8068 .next()
8069 .await;
8070 }
8071
8072 async fn handle_resolve_completion_request(
8073 fake: &mut FakeLanguageServer,
8074 edit: Option<(Range<Point>, &'static str)>,
8075 ) {
8076 fake.handle_request::<lsp::request::ResolveCompletionItem, _>(move |_| {
8077 lsp::CompletionItem {
8078 additional_text_edits: edit.clone().map(|(range, new_text)| {
8079 vec![lsp::TextEdit::new(
8080 lsp::Range::new(
8081 lsp::Position::new(range.start.row, range.start.column),
8082 lsp::Position::new(range.end.row, range.end.column),
8083 ),
8084 new_text.to_string(),
8085 )]
8086 }),
8087 ..Default::default()
8088 }
8089 })
8090 .next()
8091 .await;
8092 }
8093 }
8094
8095 #[gpui::test]
8096 async fn test_toggle_comment(mut cx: gpui::TestAppContext) {
8097 let settings = cx.read(EditorSettings::test);
8098 let language = Arc::new(Language::new(
8099 LanguageConfig {
8100 line_comment: Some("// ".to_string()),
8101 ..Default::default()
8102 },
8103 Some(tree_sitter_rust::language()),
8104 ));
8105
8106 let text = "
8107 fn a() {
8108 //b();
8109 // c();
8110 // d();
8111 }
8112 "
8113 .unindent();
8114
8115 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8116 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8117 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8118
8119 view.update(&mut cx, |editor, cx| {
8120 // If multiple selections intersect a line, the line is only
8121 // toggled once.
8122 editor.select_display_ranges(
8123 &[
8124 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
8125 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
8126 ],
8127 cx,
8128 );
8129 editor.toggle_comments(&ToggleComments, cx);
8130 assert_eq!(
8131 editor.text(cx),
8132 "
8133 fn a() {
8134 b();
8135 c();
8136 d();
8137 }
8138 "
8139 .unindent()
8140 );
8141
8142 // The comment prefix is inserted at the same column for every line
8143 // in a selection.
8144 editor.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx);
8145 editor.toggle_comments(&ToggleComments, cx);
8146 assert_eq!(
8147 editor.text(cx),
8148 "
8149 fn a() {
8150 // b();
8151 // c();
8152 // d();
8153 }
8154 "
8155 .unindent()
8156 );
8157
8158 // If a selection ends at the beginning of a line, that line is not toggled.
8159 editor.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx);
8160 editor.toggle_comments(&ToggleComments, cx);
8161 assert_eq!(
8162 editor.text(cx),
8163 "
8164 fn a() {
8165 // b();
8166 c();
8167 // d();
8168 }
8169 "
8170 .unindent()
8171 );
8172 });
8173 }
8174
8175 #[gpui::test]
8176 fn test_editing_disjoint_excerpts(cx: &mut gpui::MutableAppContext) {
8177 let settings = EditorSettings::test(cx);
8178 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8179 let multibuffer = cx.add_model(|cx| {
8180 let mut multibuffer = MultiBuffer::new(0);
8181 multibuffer.push_excerpts(
8182 buffer.clone(),
8183 [
8184 Point::new(0, 0)..Point::new(0, 4),
8185 Point::new(1, 0)..Point::new(1, 4),
8186 ],
8187 cx,
8188 );
8189 multibuffer
8190 });
8191
8192 assert_eq!(multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb");
8193
8194 let (_, view) = cx.add_window(Default::default(), |cx| {
8195 build_editor(multibuffer, settings, cx)
8196 });
8197 view.update(cx, |view, cx| {
8198 assert_eq!(view.text(cx), "aaaa\nbbbb");
8199 view.select_ranges(
8200 [
8201 Point::new(0, 0)..Point::new(0, 0),
8202 Point::new(1, 0)..Point::new(1, 0),
8203 ],
8204 None,
8205 cx,
8206 );
8207
8208 view.handle_input(&Input("X".to_string()), cx);
8209 assert_eq!(view.text(cx), "Xaaaa\nXbbbb");
8210 assert_eq!(
8211 view.selected_ranges(cx),
8212 [
8213 Point::new(0, 1)..Point::new(0, 1),
8214 Point::new(1, 1)..Point::new(1, 1),
8215 ]
8216 )
8217 });
8218 }
8219
8220 #[gpui::test]
8221 fn test_editing_overlapping_excerpts(cx: &mut gpui::MutableAppContext) {
8222 let settings = EditorSettings::test(cx);
8223 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8224 let multibuffer = cx.add_model(|cx| {
8225 let mut multibuffer = MultiBuffer::new(0);
8226 multibuffer.push_excerpts(
8227 buffer,
8228 [
8229 Point::new(0, 0)..Point::new(1, 4),
8230 Point::new(1, 0)..Point::new(2, 4),
8231 ],
8232 cx,
8233 );
8234 multibuffer
8235 });
8236
8237 assert_eq!(
8238 multibuffer.read(cx).read(cx).text(),
8239 "aaaa\nbbbb\nbbbb\ncccc"
8240 );
8241
8242 let (_, view) = cx.add_window(Default::default(), |cx| {
8243 build_editor(multibuffer, settings, cx)
8244 });
8245 view.update(cx, |view, cx| {
8246 view.select_ranges(
8247 [
8248 Point::new(1, 1)..Point::new(1, 1),
8249 Point::new(2, 3)..Point::new(2, 3),
8250 ],
8251 None,
8252 cx,
8253 );
8254
8255 view.handle_input(&Input("X".to_string()), cx);
8256 assert_eq!(view.text(cx), "aaaa\nbXbbXb\nbXbbXb\ncccc");
8257 assert_eq!(
8258 view.selected_ranges(cx),
8259 [
8260 Point::new(1, 2)..Point::new(1, 2),
8261 Point::new(2, 5)..Point::new(2, 5),
8262 ]
8263 );
8264
8265 view.newline(&Newline, cx);
8266 assert_eq!(view.text(cx), "aaaa\nbX\nbbX\nb\nbX\nbbX\nb\ncccc");
8267 assert_eq!(
8268 view.selected_ranges(cx),
8269 [
8270 Point::new(2, 0)..Point::new(2, 0),
8271 Point::new(6, 0)..Point::new(6, 0),
8272 ]
8273 );
8274 });
8275 }
8276
8277 #[gpui::test]
8278 fn test_refresh_selections(cx: &mut gpui::MutableAppContext) {
8279 let settings = EditorSettings::test(cx);
8280 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8281 let mut excerpt1_id = None;
8282 let multibuffer = cx.add_model(|cx| {
8283 let mut multibuffer = MultiBuffer::new(0);
8284 excerpt1_id = multibuffer
8285 .push_excerpts(
8286 buffer.clone(),
8287 [
8288 Point::new(0, 0)..Point::new(1, 4),
8289 Point::new(1, 0)..Point::new(2, 4),
8290 ],
8291 cx,
8292 )
8293 .into_iter()
8294 .next();
8295 multibuffer
8296 });
8297 assert_eq!(
8298 multibuffer.read(cx).read(cx).text(),
8299 "aaaa\nbbbb\nbbbb\ncccc"
8300 );
8301 let (_, editor) = cx.add_window(Default::default(), |cx| {
8302 let mut editor = build_editor(multibuffer.clone(), settings, cx);
8303 editor.select_ranges(
8304 [
8305 Point::new(1, 3)..Point::new(1, 3),
8306 Point::new(2, 1)..Point::new(2, 1),
8307 ],
8308 None,
8309 cx,
8310 );
8311 editor
8312 });
8313
8314 // Refreshing selections is a no-op when excerpts haven't changed.
8315 editor.update(cx, |editor, cx| {
8316 editor.refresh_selections(cx);
8317 assert_eq!(
8318 editor.selected_ranges(cx),
8319 [
8320 Point::new(1, 3)..Point::new(1, 3),
8321 Point::new(2, 1)..Point::new(2, 1),
8322 ]
8323 );
8324 });
8325
8326 multibuffer.update(cx, |multibuffer, cx| {
8327 multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx);
8328 });
8329 editor.update(cx, |editor, cx| {
8330 // Removing an excerpt causes the first selection to become degenerate.
8331 assert_eq!(
8332 editor.selected_ranges(cx),
8333 [
8334 Point::new(0, 0)..Point::new(0, 0),
8335 Point::new(0, 1)..Point::new(0, 1)
8336 ]
8337 );
8338
8339 // Refreshing selections will relocate the first selection to the original buffer
8340 // location.
8341 editor.refresh_selections(cx);
8342 assert_eq!(
8343 editor.selected_ranges(cx),
8344 [
8345 Point::new(0, 1)..Point::new(0, 1),
8346 Point::new(0, 3)..Point::new(0, 3)
8347 ]
8348 );
8349 });
8350 }
8351
8352 #[gpui::test]
8353 async fn test_extra_newline_insertion(mut cx: gpui::TestAppContext) {
8354 let settings = cx.read(EditorSettings::test);
8355 let language = Arc::new(Language::new(
8356 LanguageConfig {
8357 brackets: vec![
8358 BracketPair {
8359 start: "{".to_string(),
8360 end: "}".to_string(),
8361 close: true,
8362 newline: true,
8363 },
8364 BracketPair {
8365 start: "/* ".to_string(),
8366 end: " */".to_string(),
8367 close: true,
8368 newline: true,
8369 },
8370 ],
8371 ..Default::default()
8372 },
8373 Some(tree_sitter_rust::language()),
8374 ));
8375
8376 let text = concat!(
8377 "{ }\n", // Suppress rustfmt
8378 " x\n", //
8379 " /* */\n", //
8380 "x\n", //
8381 "{{} }\n", //
8382 );
8383
8384 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8385 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8386 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8387 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
8388 .await;
8389
8390 view.update(&mut cx, |view, cx| {
8391 view.select_display_ranges(
8392 &[
8393 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
8394 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
8395 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
8396 ],
8397 cx,
8398 );
8399 view.newline(&Newline, cx);
8400
8401 assert_eq!(
8402 view.buffer().read(cx).read(cx).text(),
8403 concat!(
8404 "{ \n", // Suppress rustfmt
8405 "\n", //
8406 "}\n", //
8407 " x\n", //
8408 " /* \n", //
8409 " \n", //
8410 " */\n", //
8411 "x\n", //
8412 "{{} \n", //
8413 "}\n", //
8414 )
8415 );
8416 });
8417 }
8418
8419 #[gpui::test]
8420 fn test_highlighted_ranges(cx: &mut gpui::MutableAppContext) {
8421 let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
8422 let settings = EditorSettings::test(&cx);
8423 let (_, editor) = cx.add_window(Default::default(), |cx| {
8424 build_editor(buffer.clone(), settings, cx)
8425 });
8426
8427 editor.update(cx, |editor, cx| {
8428 struct Type1;
8429 struct Type2;
8430
8431 let buffer = buffer.read(cx).snapshot(cx);
8432
8433 let anchor_range = |range: Range<Point>| {
8434 buffer.anchor_after(range.start)..buffer.anchor_after(range.end)
8435 };
8436
8437 editor.highlight_ranges::<Type1>(
8438 vec![
8439 anchor_range(Point::new(2, 1)..Point::new(2, 3)),
8440 anchor_range(Point::new(4, 2)..Point::new(4, 4)),
8441 anchor_range(Point::new(6, 3)..Point::new(6, 5)),
8442 anchor_range(Point::new(8, 4)..Point::new(8, 6)),
8443 ],
8444 Color::red(),
8445 cx,
8446 );
8447 editor.highlight_ranges::<Type2>(
8448 vec![
8449 anchor_range(Point::new(3, 2)..Point::new(3, 5)),
8450 anchor_range(Point::new(5, 3)..Point::new(5, 6)),
8451 anchor_range(Point::new(7, 4)..Point::new(7, 7)),
8452 anchor_range(Point::new(9, 5)..Point::new(9, 8)),
8453 ],
8454 Color::green(),
8455 cx,
8456 );
8457
8458 let snapshot = editor.snapshot(cx);
8459 let mut highlighted_ranges = editor.highlighted_ranges_in_range(
8460 anchor_range(Point::new(3, 4)..Point::new(7, 4)),
8461 &snapshot,
8462 );
8463 // Enforce a consistent ordering based on color without relying on the ordering of the
8464 // highlight's `TypeId` which is non-deterministic.
8465 highlighted_ranges.sort_unstable_by_key(|(_, color)| *color);
8466 assert_eq!(
8467 highlighted_ranges,
8468 &[
8469 (
8470 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 5),
8471 Color::green(),
8472 ),
8473 (
8474 DisplayPoint::new(5, 3)..DisplayPoint::new(5, 6),
8475 Color::green(),
8476 ),
8477 (
8478 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 4),
8479 Color::red(),
8480 ),
8481 (
8482 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
8483 Color::red(),
8484 ),
8485 ]
8486 );
8487 assert_eq!(
8488 editor.highlighted_ranges_in_range(
8489 anchor_range(Point::new(5, 6)..Point::new(6, 4)),
8490 &snapshot,
8491 ),
8492 &[(
8493 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
8494 Color::red(),
8495 )]
8496 );
8497 });
8498 }
8499
8500 #[test]
8501 fn test_combine_syntax_and_fuzzy_match_highlights() {
8502 let string = "abcdefghijklmnop";
8503 let default = HighlightStyle::default();
8504 let syntax_ranges = [
8505 (
8506 0..3,
8507 HighlightStyle {
8508 color: Color::red(),
8509 ..default
8510 },
8511 ),
8512 (
8513 4..8,
8514 HighlightStyle {
8515 color: Color::green(),
8516 ..default
8517 },
8518 ),
8519 ];
8520 let match_indices = [4, 6, 7, 8];
8521 assert_eq!(
8522 combine_syntax_and_fuzzy_match_highlights(
8523 &string,
8524 default,
8525 syntax_ranges.into_iter(),
8526 &match_indices,
8527 ),
8528 &[
8529 (
8530 0..3,
8531 HighlightStyle {
8532 color: Color::red(),
8533 ..default
8534 },
8535 ),
8536 (
8537 4..5,
8538 HighlightStyle {
8539 color: Color::green(),
8540 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
8541 ..default
8542 },
8543 ),
8544 (
8545 5..6,
8546 HighlightStyle {
8547 color: Color::green(),
8548 ..default
8549 },
8550 ),
8551 (
8552 6..8,
8553 HighlightStyle {
8554 color: Color::green(),
8555 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
8556 ..default
8557 },
8558 ),
8559 (
8560 8..9,
8561 HighlightStyle {
8562 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
8563 ..default
8564 },
8565 ),
8566 ]
8567 );
8568 }
8569
8570 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
8571 let point = DisplayPoint::new(row as u32, column as u32);
8572 point..point
8573 }
8574
8575 fn build_editor(
8576 buffer: ModelHandle<MultiBuffer>,
8577 settings: EditorSettings,
8578 cx: &mut ViewContext<Editor>,
8579 ) -> Editor {
8580 Editor::for_buffer(buffer, Arc::new(move |_| settings.clone()), None, cx)
8581 }
8582}
8583
8584trait RangeExt<T> {
8585 fn sorted(&self) -> Range<T>;
8586 fn to_inclusive(&self) -> RangeInclusive<T>;
8587}
8588
8589impl<T: Ord + Clone> RangeExt<T> for Range<T> {
8590 fn sorted(&self) -> Self {
8591 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
8592 }
8593
8594 fn to_inclusive(&self) -> RangeInclusive<T> {
8595 self.start.clone()..=self.end.clone()
8596 }
8597}