1pub mod display_map;
2mod element;
3pub mod items;
4pub mod movement;
5mod multi_buffer;
6mod multi_editor;
7
8#[cfg(test)]
9mod test;
10
11use aho_corasick::AhoCorasick;
12use anyhow::Result;
13use clock::ReplicaId;
14use collections::{BTreeMap, HashMap, HashSet};
15pub use display_map::DisplayPoint;
16use display_map::*;
17pub use element::*;
18use fuzzy::{StringMatch, StringMatchCandidate};
19use gpui::{
20 action,
21 color::Color,
22 elements::*,
23 executor,
24 fonts::{self, HighlightStyle, TextStyle},
25 geometry::vector::{vec2f, Vector2F},
26 keymap::Binding,
27 platform::CursorStyle,
28 text_layout, AppContext, ClipboardItem, Element, ElementBox, Entity, ModelHandle,
29 MutableAppContext, RenderContext, Task, View, ViewContext, WeakModelHandle, WeakViewHandle,
30};
31use items::BufferItemHandle;
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, ExcerptProperties, MultiBuffer,
40 MultiBufferSnapshot, ToOffset, ToPoint,
41};
42use ordered_float::OrderedFloat;
43use postage::watch;
44use project::Project;
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!(PageUp);
122action!(PageDown);
123action!(Fold);
124action!(Unfold);
125action!(FoldSelectedRanges);
126action!(Scroll, Vector2F);
127action!(Select, SelectPhase);
128action!(ShowCompletions);
129action!(ShowCodeActions);
130action!(ConfirmCompletion, Option<usize>);
131action!(ConfirmCodeAction, Option<usize>);
132
133pub fn init(cx: &mut MutableAppContext, path_openers: &mut Vec<Box<dyn PathOpener>>) {
134 path_openers.push(Box::new(items::BufferOpener));
135 cx.add_bindings(vec![
136 Binding::new("escape", Cancel, Some("Editor")),
137 Binding::new("backspace", Backspace, Some("Editor")),
138 Binding::new("ctrl-h", Backspace, Some("Editor")),
139 Binding::new("delete", Delete, Some("Editor")),
140 Binding::new("ctrl-d", Delete, Some("Editor")),
141 Binding::new("enter", Newline, Some("Editor && mode == full")),
142 Binding::new(
143 "alt-enter",
144 Input("\n".into()),
145 Some("Editor && mode == auto_height"),
146 ),
147 Binding::new(
148 "enter",
149 ConfirmCompletion(None),
150 Some("Editor && showing_completions"),
151 ),
152 Binding::new(
153 "enter",
154 ConfirmCodeAction(None),
155 Some("Editor && showing_code_actions"),
156 ),
157 Binding::new("tab", Tab, Some("Editor")),
158 Binding::new(
159 "tab",
160 ConfirmCompletion(None),
161 Some("Editor && showing_completions"),
162 ),
163 Binding::new("shift-tab", Outdent, Some("Editor")),
164 Binding::new("ctrl-shift-K", DeleteLine, Some("Editor")),
165 Binding::new(
166 "alt-backspace",
167 DeleteToPreviousWordBoundary,
168 Some("Editor"),
169 ),
170 Binding::new("alt-h", DeleteToPreviousWordBoundary, Some("Editor")),
171 Binding::new("alt-delete", DeleteToNextWordBoundary, Some("Editor")),
172 Binding::new("alt-d", DeleteToNextWordBoundary, Some("Editor")),
173 Binding::new("cmd-backspace", DeleteToBeginningOfLine, Some("Editor")),
174 Binding::new("cmd-delete", DeleteToEndOfLine, Some("Editor")),
175 Binding::new("ctrl-k", CutToEndOfLine, Some("Editor")),
176 Binding::new("cmd-shift-D", DuplicateLine, Some("Editor")),
177 Binding::new("ctrl-cmd-up", MoveLineUp, Some("Editor")),
178 Binding::new("ctrl-cmd-down", MoveLineDown, Some("Editor")),
179 Binding::new("cmd-x", Cut, Some("Editor")),
180 Binding::new("cmd-c", Copy, Some("Editor")),
181 Binding::new("cmd-v", Paste, Some("Editor")),
182 Binding::new("cmd-z", Undo, Some("Editor")),
183 Binding::new("cmd-shift-Z", Redo, Some("Editor")),
184 Binding::new("up", MoveUp, Some("Editor")),
185 Binding::new("down", MoveDown, Some("Editor")),
186 Binding::new("left", MoveLeft, Some("Editor")),
187 Binding::new("right", MoveRight, Some("Editor")),
188 Binding::new("ctrl-p", MoveUp, Some("Editor")),
189 Binding::new("ctrl-n", MoveDown, Some("Editor")),
190 Binding::new("ctrl-b", MoveLeft, Some("Editor")),
191 Binding::new("ctrl-f", MoveRight, Some("Editor")),
192 Binding::new("alt-left", MoveToPreviousWordBoundary, Some("Editor")),
193 Binding::new("alt-b", MoveToPreviousWordBoundary, Some("Editor")),
194 Binding::new("alt-right", MoveToNextWordBoundary, Some("Editor")),
195 Binding::new("alt-f", MoveToNextWordBoundary, Some("Editor")),
196 Binding::new("cmd-left", MoveToBeginningOfLine, Some("Editor")),
197 Binding::new("ctrl-a", MoveToBeginningOfLine, Some("Editor")),
198 Binding::new("cmd-right", MoveToEndOfLine, Some("Editor")),
199 Binding::new("ctrl-e", MoveToEndOfLine, Some("Editor")),
200 Binding::new("cmd-up", MoveToBeginning, Some("Editor")),
201 Binding::new("cmd-down", MoveToEnd, Some("Editor")),
202 Binding::new("shift-up", SelectUp, Some("Editor")),
203 Binding::new("ctrl-shift-P", SelectUp, Some("Editor")),
204 Binding::new("shift-down", SelectDown, Some("Editor")),
205 Binding::new("ctrl-shift-N", SelectDown, Some("Editor")),
206 Binding::new("shift-left", SelectLeft, Some("Editor")),
207 Binding::new("ctrl-shift-B", SelectLeft, Some("Editor")),
208 Binding::new("shift-right", SelectRight, Some("Editor")),
209 Binding::new("ctrl-shift-F", SelectRight, Some("Editor")),
210 Binding::new(
211 "alt-shift-left",
212 SelectToPreviousWordBoundary,
213 Some("Editor"),
214 ),
215 Binding::new("alt-shift-B", SelectToPreviousWordBoundary, Some("Editor")),
216 Binding::new("alt-shift-right", SelectToNextWordBoundary, Some("Editor")),
217 Binding::new("alt-shift-F", SelectToNextWordBoundary, Some("Editor")),
218 Binding::new(
219 "cmd-shift-left",
220 SelectToBeginningOfLine(true),
221 Some("Editor"),
222 ),
223 Binding::new(
224 "ctrl-shift-A",
225 SelectToBeginningOfLine(true),
226 Some("Editor"),
227 ),
228 Binding::new("cmd-shift-right", SelectToEndOfLine(true), Some("Editor")),
229 Binding::new("ctrl-shift-E", SelectToEndOfLine(true), Some("Editor")),
230 Binding::new("cmd-shift-up", SelectToBeginning, Some("Editor")),
231 Binding::new("cmd-shift-down", SelectToEnd, Some("Editor")),
232 Binding::new("cmd-a", SelectAll, Some("Editor")),
233 Binding::new("cmd-l", SelectLine, Some("Editor")),
234 Binding::new("cmd-shift-L", SplitSelectionIntoLines, Some("Editor")),
235 Binding::new("cmd-alt-up", AddSelectionAbove, Some("Editor")),
236 Binding::new("cmd-ctrl-p", AddSelectionAbove, Some("Editor")),
237 Binding::new("cmd-alt-down", AddSelectionBelow, Some("Editor")),
238 Binding::new("cmd-ctrl-n", AddSelectionBelow, Some("Editor")),
239 Binding::new("cmd-d", SelectNext(false), Some("Editor")),
240 Binding::new("cmd-k cmd-d", SelectNext(true), Some("Editor")),
241 Binding::new("cmd-/", ToggleComments, Some("Editor")),
242 Binding::new("alt-up", SelectLargerSyntaxNode, Some("Editor")),
243 Binding::new("ctrl-w", SelectLargerSyntaxNode, Some("Editor")),
244 Binding::new("alt-down", SelectSmallerSyntaxNode, Some("Editor")),
245 Binding::new("ctrl-shift-W", SelectSmallerSyntaxNode, Some("Editor")),
246 Binding::new("f8", ShowNextDiagnostic, Some("Editor")),
247 Binding::new("f12", GoToDefinition, Some("Editor")),
248 Binding::new("ctrl-m", MoveToEnclosingBracket, Some("Editor")),
249 Binding::new("pageup", PageUp, Some("Editor")),
250 Binding::new("pagedown", PageDown, Some("Editor")),
251 Binding::new("alt-cmd-[", Fold, Some("Editor")),
252 Binding::new("alt-cmd-]", Unfold, Some("Editor")),
253 Binding::new("alt-cmd-f", FoldSelectedRanges, Some("Editor")),
254 Binding::new("ctrl-space", ShowCompletions, Some("Editor")),
255 Binding::new("cmd-.", ShowCodeActions, Some("Editor")),
256 ]);
257
258 cx.add_action(Editor::open_new);
259 cx.add_action(|this: &mut Editor, action: &Scroll, cx| this.set_scroll_position(action.0, cx));
260 cx.add_action(Editor::select);
261 cx.add_action(Editor::cancel);
262 cx.add_action(Editor::handle_input);
263 cx.add_action(Editor::newline);
264 cx.add_action(Editor::backspace);
265 cx.add_action(Editor::delete);
266 cx.add_action(Editor::tab);
267 cx.add_action(Editor::outdent);
268 cx.add_action(Editor::delete_line);
269 cx.add_action(Editor::delete_to_previous_word_boundary);
270 cx.add_action(Editor::delete_to_next_word_boundary);
271 cx.add_action(Editor::delete_to_beginning_of_line);
272 cx.add_action(Editor::delete_to_end_of_line);
273 cx.add_action(Editor::cut_to_end_of_line);
274 cx.add_action(Editor::duplicate_line);
275 cx.add_action(Editor::move_line_up);
276 cx.add_action(Editor::move_line_down);
277 cx.add_action(Editor::cut);
278 cx.add_action(Editor::copy);
279 cx.add_action(Editor::paste);
280 cx.add_action(Editor::undo);
281 cx.add_action(Editor::redo);
282 cx.add_action(Editor::move_up);
283 cx.add_action(Editor::move_down);
284 cx.add_action(Editor::move_left);
285 cx.add_action(Editor::move_right);
286 cx.add_action(Editor::move_to_previous_word_boundary);
287 cx.add_action(Editor::move_to_next_word_boundary);
288 cx.add_action(Editor::move_to_beginning_of_line);
289 cx.add_action(Editor::move_to_end_of_line);
290 cx.add_action(Editor::move_to_beginning);
291 cx.add_action(Editor::move_to_end);
292 cx.add_action(Editor::select_up);
293 cx.add_action(Editor::select_down);
294 cx.add_action(Editor::select_left);
295 cx.add_action(Editor::select_right);
296 cx.add_action(Editor::select_to_previous_word_boundary);
297 cx.add_action(Editor::select_to_next_word_boundary);
298 cx.add_action(Editor::select_to_beginning_of_line);
299 cx.add_action(Editor::select_to_end_of_line);
300 cx.add_action(Editor::select_to_beginning);
301 cx.add_action(Editor::select_to_end);
302 cx.add_action(Editor::select_all);
303 cx.add_action(Editor::select_line);
304 cx.add_action(Editor::split_selection_into_lines);
305 cx.add_action(Editor::add_selection_above);
306 cx.add_action(Editor::add_selection_below);
307 cx.add_action(Editor::select_next);
308 cx.add_action(Editor::toggle_comments);
309 cx.add_action(Editor::select_larger_syntax_node);
310 cx.add_action(Editor::select_smaller_syntax_node);
311 cx.add_action(Editor::move_to_enclosing_bracket);
312 cx.add_action(Editor::show_next_diagnostic);
313 cx.add_action(Editor::go_to_definition);
314 cx.add_action(Editor::page_up);
315 cx.add_action(Editor::page_down);
316 cx.add_action(Editor::fold);
317 cx.add_action(Editor::unfold);
318 cx.add_action(Editor::fold_selected_ranges);
319 cx.add_action(Editor::show_completions);
320 cx.add_action(Editor::show_code_actions);
321 cx.add_async_action(Editor::confirm_completion);
322 cx.add_async_action(Editor::confirm_code_action);
323}
324
325trait SelectionExt {
326 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize>;
327 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point>;
328 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint>;
329 fn spanned_rows(&self, include_end_if_at_line_start: bool, map: &DisplaySnapshot)
330 -> Range<u32>;
331}
332
333trait InvalidationRegion {
334 fn ranges(&self) -> &[Range<Anchor>];
335}
336
337#[derive(Clone, Debug)]
338pub enum SelectPhase {
339 Begin {
340 position: DisplayPoint,
341 add: bool,
342 click_count: usize,
343 },
344 BeginColumnar {
345 position: DisplayPoint,
346 overshoot: u32,
347 },
348 Extend {
349 position: DisplayPoint,
350 click_count: usize,
351 },
352 Update {
353 position: DisplayPoint,
354 overshoot: u32,
355 scroll_position: Vector2F,
356 },
357 End,
358}
359
360#[derive(Clone, Debug)]
361enum SelectMode {
362 Character,
363 Word(Range<Anchor>),
364 Line(Range<Anchor>),
365 All,
366}
367
368#[derive(PartialEq, Eq)]
369pub enum Autoscroll {
370 Fit,
371 Center,
372 Newest,
373}
374
375#[derive(Copy, Clone, PartialEq, Eq)]
376pub enum EditorMode {
377 SingleLine,
378 AutoHeight { max_lines: usize },
379 Full,
380}
381
382#[derive(Clone)]
383pub struct EditorSettings {
384 pub tab_size: usize,
385 pub soft_wrap: SoftWrap,
386 pub style: EditorStyle,
387}
388
389#[derive(Clone)]
390pub enum SoftWrap {
391 None,
392 EditorWidth,
393 Column(u32),
394}
395
396type CompletionId = usize;
397
398pub type BuildSettings = Arc<dyn 'static + Send + Sync + Fn(&AppContext) -> EditorSettings>;
399
400pub struct Editor {
401 handle: WeakViewHandle<Self>,
402 buffer: ModelHandle<MultiBuffer>,
403 display_map: ModelHandle<DisplayMap>,
404 next_selection_id: usize,
405 selections: Arc<[Selection<Anchor>]>,
406 pending_selection: Option<PendingSelection>,
407 columnar_selection_tail: Option<Anchor>,
408 add_selections_state: Option<AddSelectionsState>,
409 select_next_state: Option<SelectNextState>,
410 selection_history:
411 HashMap<TransactionId, (Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)>,
412 autoclose_stack: InvalidationStack<BracketPairState>,
413 snippet_stack: InvalidationStack<SnippetState>,
414 select_larger_syntax_node_stack: Vec<Box<[Selection<usize>]>>,
415 active_diagnostics: Option<ActiveDiagnosticGroup>,
416 scroll_position: Vector2F,
417 scroll_top_anchor: Option<Anchor>,
418 autoscroll_request: Option<Autoscroll>,
419 build_settings: BuildSettings,
420 project: Option<ModelHandle<Project>>,
421 focused: bool,
422 show_local_cursors: bool,
423 blink_epoch: usize,
424 blinking_paused: bool,
425 mode: EditorMode,
426 vertical_scroll_margin: f32,
427 placeholder_text: Option<Arc<str>>,
428 highlighted_rows: Option<Range<u32>>,
429 highlighted_ranges: BTreeMap<TypeId, (Color, Vec<Range<Anchor>>)>,
430 nav_history: Option<ItemNavHistory>,
431 context_menu: Option<ContextMenu>,
432 completion_tasks: Vec<(CompletionId, Task<Option<()>>)>,
433 next_completion_id: CompletionId,
434}
435
436pub struct EditorSnapshot {
437 pub mode: EditorMode,
438 pub display_snapshot: DisplaySnapshot,
439 pub placeholder_text: Option<Arc<str>>,
440 is_focused: bool,
441 scroll_position: Vector2F,
442 scroll_top_anchor: Option<Anchor>,
443}
444
445struct PendingSelection {
446 selection: Selection<Anchor>,
447 mode: SelectMode,
448}
449
450struct AddSelectionsState {
451 above: bool,
452 stack: Vec<usize>,
453}
454
455struct SelectNextState {
456 query: AhoCorasick,
457 wordwise: bool,
458 done: bool,
459}
460
461struct BracketPairState {
462 ranges: Vec<Range<Anchor>>,
463 pair: BracketPair,
464}
465
466struct SnippetState {
467 ranges: Vec<Vec<Range<Anchor>>>,
468 active_index: usize,
469}
470
471struct InvalidationStack<T>(Vec<T>);
472
473enum ContextMenu {
474 Completions(CompletionsMenu),
475 CodeActions(CodeActionsMenu),
476}
477
478impl ContextMenu {
479 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) -> bool {
480 if self.visible() {
481 match self {
482 ContextMenu::Completions(menu) => menu.select_prev(cx),
483 ContextMenu::CodeActions(menu) => menu.select_prev(cx),
484 }
485 true
486 } else {
487 false
488 }
489 }
490
491 fn select_next(&mut self, cx: &mut ViewContext<Editor>) -> bool {
492 if self.visible() {
493 match self {
494 ContextMenu::Completions(menu) => menu.select_next(cx),
495 ContextMenu::CodeActions(menu) => menu.select_next(cx),
496 }
497 true
498 } else {
499 false
500 }
501 }
502
503 fn visible(&self) -> bool {
504 match self {
505 ContextMenu::Completions(menu) => menu.visible(),
506 ContextMenu::CodeActions(menu) => menu.visible(),
507 }
508 }
509
510 fn render(&self, build_settings: BuildSettings, cx: &AppContext) -> ElementBox {
511 match self {
512 ContextMenu::Completions(menu) => menu.render(build_settings, cx),
513 ContextMenu::CodeActions(menu) => menu.render(build_settings, cx),
514 }
515 }
516}
517
518struct CompletionsMenu {
519 id: CompletionId,
520 initial_position: Anchor,
521 buffer: ModelHandle<Buffer>,
522 completions: Arc<[Completion]>,
523 match_candidates: Vec<StringMatchCandidate>,
524 matches: Arc<[StringMatch]>,
525 selected_item: usize,
526 list: UniformListState,
527}
528
529impl CompletionsMenu {
530 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) {
531 if self.selected_item > 0 {
532 self.selected_item -= 1;
533 self.list.scroll_to(ScrollTarget::Show(self.selected_item));
534 }
535 cx.notify();
536 }
537
538 fn select_next(&mut self, cx: &mut ViewContext<Editor>) {
539 if self.selected_item + 1 < self.matches.len() {
540 self.selected_item += 1;
541 self.list.scroll_to(ScrollTarget::Show(self.selected_item));
542 }
543 cx.notify();
544 }
545
546 fn visible(&self) -> bool {
547 !self.matches.is_empty()
548 }
549
550 fn render(&self, build_settings: BuildSettings, cx: &AppContext) -> ElementBox {
551 enum CompletionTag {}
552
553 let settings = build_settings(cx);
554 let completions = self.completions.clone();
555 let matches = self.matches.clone();
556 let selected_item = self.selected_item;
557 UniformList::new(self.list.clone(), matches.len(), move |range, items, cx| {
558 let settings = build_settings(cx);
559 let start_ix = range.start;
560 for (ix, mat) in matches[range].iter().enumerate() {
561 let completion = &completions[mat.candidate_id];
562 let item_ix = start_ix + ix;
563 items.push(
564 MouseEventHandler::new::<CompletionTag, _, _, _>(
565 mat.candidate_id,
566 cx,
567 |state, _| {
568 let item_style = if item_ix == selected_item {
569 settings.style.autocomplete.selected_item
570 } else if state.hovered {
571 settings.style.autocomplete.hovered_item
572 } else {
573 settings.style.autocomplete.item
574 };
575
576 Text::new(completion.label.text.clone(), settings.style.text.clone())
577 .with_soft_wrap(false)
578 .with_highlights(combine_syntax_and_fuzzy_match_highlights(
579 &completion.label.text,
580 settings.style.text.color.into(),
581 styled_runs_for_completion_label(
582 &completion.label,
583 settings.style.text.color,
584 &settings.style.syntax,
585 ),
586 &mat.positions,
587 ))
588 .contained()
589 .with_style(item_style)
590 .boxed()
591 },
592 )
593 .with_cursor_style(CursorStyle::PointingHand)
594 .on_mouse_down(move |cx| {
595 cx.dispatch_action(ConfirmCompletion(Some(item_ix)));
596 })
597 .boxed(),
598 );
599 }
600 })
601 .with_width_from_item(
602 self.matches
603 .iter()
604 .enumerate()
605 .max_by_key(|(_, mat)| {
606 self.completions[mat.candidate_id]
607 .label
608 .text
609 .chars()
610 .count()
611 })
612 .map(|(ix, _)| ix),
613 )
614 .contained()
615 .with_style(settings.style.autocomplete.container)
616 .boxed()
617 }
618
619 pub async fn filter(&mut self, query: Option<&str>, executor: Arc<executor::Background>) {
620 let mut matches = if let Some(query) = query {
621 fuzzy::match_strings(
622 &self.match_candidates,
623 query,
624 false,
625 100,
626 &Default::default(),
627 executor,
628 )
629 .await
630 } else {
631 self.match_candidates
632 .iter()
633 .enumerate()
634 .map(|(candidate_id, candidate)| StringMatch {
635 candidate_id,
636 score: Default::default(),
637 positions: Default::default(),
638 string: candidate.string.clone(),
639 })
640 .collect()
641 };
642 matches.sort_unstable_by_key(|mat| {
643 (
644 Reverse(OrderedFloat(mat.score)),
645 self.completions[mat.candidate_id].sort_key(),
646 )
647 });
648
649 for mat in &mut matches {
650 let filter_start = self.completions[mat.candidate_id].label.filter_range.start;
651 for position in &mut mat.positions {
652 *position += filter_start;
653 }
654 }
655
656 self.matches = matches.into();
657 }
658}
659
660struct CodeActionsMenu {
661 actions: Arc<[CodeAction]>,
662 buffer: ModelHandle<Buffer>,
663 selected_item: usize,
664 list: UniformListState,
665}
666
667impl CodeActionsMenu {
668 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) {
669 if self.selected_item > 0 {
670 self.selected_item -= 1;
671 cx.notify()
672 }
673 }
674
675 fn select_next(&mut self, cx: &mut ViewContext<Editor>) {
676 if self.selected_item + 1 < self.actions.len() {
677 self.selected_item += 1;
678 cx.notify()
679 }
680 }
681
682 fn visible(&self) -> bool {
683 !self.actions.is_empty()
684 }
685
686 fn render(&self, build_settings: BuildSettings, cx: &AppContext) -> ElementBox {
687 enum ActionTag {}
688
689 let settings = build_settings(cx);
690 let actions = self.actions.clone();
691 let selected_item = self.selected_item;
692 UniformList::new(self.list.clone(), actions.len(), move |range, items, cx| {
693 let settings = build_settings(cx);
694 let start_ix = range.start;
695 for (ix, action) in actions[range].iter().enumerate() {
696 let item_ix = start_ix + ix;
697 items.push(
698 MouseEventHandler::new::<ActionTag, _, _, _>(item_ix, cx, |state, _| {
699 let item_style = if item_ix == selected_item {
700 settings.style.autocomplete.selected_item
701 } else if state.hovered {
702 settings.style.autocomplete.hovered_item
703 } else {
704 settings.style.autocomplete.item
705 };
706
707 Text::new(action.lsp_action.title.clone(), settings.style.text.clone())
708 .with_soft_wrap(false)
709 .contained()
710 .with_style(item_style)
711 .boxed()
712 })
713 .with_cursor_style(CursorStyle::PointingHand)
714 .on_mouse_down(move |cx| {
715 cx.dispatch_action(ConfirmCodeAction(Some(item_ix)));
716 })
717 .boxed(),
718 );
719 }
720 })
721 .with_width_from_item(
722 self.actions
723 .iter()
724 .enumerate()
725 .max_by_key(|(_, action)| action.lsp_action.title.chars().count())
726 .map(|(ix, _)| ix),
727 )
728 .contained()
729 .with_style(settings.style.autocomplete.container)
730 .boxed()
731 }
732}
733
734#[derive(Debug)]
735struct ActiveDiagnosticGroup {
736 primary_range: Range<Anchor>,
737 primary_message: String,
738 blocks: HashMap<BlockId, Diagnostic>,
739 is_valid: bool,
740}
741
742#[derive(Serialize, Deserialize)]
743struct ClipboardSelection {
744 len: usize,
745 is_entire_line: bool,
746}
747
748pub struct NavigationData {
749 anchor: Anchor,
750 offset: usize,
751}
752
753impl Editor {
754 pub fn single_line(build_settings: BuildSettings, cx: &mut ViewContext<Self>) -> Self {
755 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
756 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
757 let mut view = Self::for_buffer(buffer, build_settings, None, cx);
758 view.mode = EditorMode::SingleLine;
759 view
760 }
761
762 pub fn auto_height(
763 max_lines: usize,
764 build_settings: BuildSettings,
765 cx: &mut ViewContext<Self>,
766 ) -> Self {
767 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
768 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
769 let mut view = Self::for_buffer(buffer, build_settings, None, cx);
770 view.mode = EditorMode::AutoHeight { max_lines };
771 view
772 }
773
774 pub fn for_buffer(
775 buffer: ModelHandle<MultiBuffer>,
776 build_settings: BuildSettings,
777 project: Option<ModelHandle<Project>>,
778 cx: &mut ViewContext<Self>,
779 ) -> Self {
780 Self::new(buffer, build_settings, project, cx)
781 }
782
783 pub fn clone(&self, cx: &mut ViewContext<Self>) -> Self {
784 let mut clone = Self::new(
785 self.buffer.clone(),
786 self.build_settings.clone(),
787 self.project.clone(),
788 cx,
789 );
790 clone.scroll_position = self.scroll_position;
791 clone.scroll_top_anchor = self.scroll_top_anchor.clone();
792 clone.nav_history = self
793 .nav_history
794 .as_ref()
795 .map(|nav_history| ItemNavHistory::new(nav_history.history(), &cx.handle()));
796 clone
797 }
798
799 pub fn new(
800 buffer: ModelHandle<MultiBuffer>,
801 build_settings: BuildSettings,
802 project: Option<ModelHandle<Project>>,
803 cx: &mut ViewContext<Self>,
804 ) -> Self {
805 let settings = build_settings(cx);
806 let display_map = cx.add_model(|cx| {
807 DisplayMap::new(
808 buffer.clone(),
809 settings.tab_size,
810 settings.style.text.font_id,
811 settings.style.text.font_size,
812 None,
813 cx,
814 )
815 });
816 cx.observe(&buffer, Self::on_buffer_changed).detach();
817 cx.subscribe(&buffer, Self::on_buffer_event).detach();
818 cx.observe(&display_map, Self::on_display_map_changed)
819 .detach();
820
821 let mut this = Self {
822 handle: cx.weak_handle(),
823 buffer,
824 display_map,
825 selections: Arc::from([]),
826 pending_selection: None,
827 columnar_selection_tail: None,
828 next_selection_id: 0,
829 add_selections_state: None,
830 select_next_state: None,
831 selection_history: Default::default(),
832 autoclose_stack: Default::default(),
833 snippet_stack: Default::default(),
834 select_larger_syntax_node_stack: Vec::new(),
835 active_diagnostics: None,
836 build_settings,
837 project,
838 scroll_position: Vector2F::zero(),
839 scroll_top_anchor: None,
840 autoscroll_request: None,
841 focused: false,
842 show_local_cursors: false,
843 blink_epoch: 0,
844 blinking_paused: false,
845 mode: EditorMode::Full,
846 vertical_scroll_margin: 3.0,
847 placeholder_text: None,
848 highlighted_rows: None,
849 highlighted_ranges: Default::default(),
850 nav_history: None,
851 context_menu: None,
852 completion_tasks: Default::default(),
853 next_completion_id: 0,
854 };
855 let selection = Selection {
856 id: post_inc(&mut this.next_selection_id),
857 start: 0,
858 end: 0,
859 reversed: false,
860 goal: SelectionGoal::None,
861 };
862 this.update_selections(vec![selection], None, cx);
863 this
864 }
865
866 pub fn open_new(
867 workspace: &mut Workspace,
868 _: &workspace::OpenNew,
869 cx: &mut ViewContext<Workspace>,
870 ) {
871 let buffer = cx
872 .add_model(|cx| Buffer::new(0, "", cx).with_language(language::PLAIN_TEXT.clone(), cx));
873 workspace.open_item(BufferItemHandle(buffer), cx);
874 }
875
876 pub fn replica_id(&self, cx: &AppContext) -> ReplicaId {
877 self.buffer.read(cx).replica_id()
878 }
879
880 pub fn buffer(&self) -> &ModelHandle<MultiBuffer> {
881 &self.buffer
882 }
883
884 pub fn title(&self, cx: &AppContext) -> String {
885 let filename = self
886 .buffer()
887 .read(cx)
888 .file(cx)
889 .map(|file| file.file_name(cx));
890 if let Some(name) = filename {
891 name.to_string_lossy().into()
892 } else {
893 "untitled".into()
894 }
895 }
896
897 pub fn snapshot(&mut self, cx: &mut MutableAppContext) -> EditorSnapshot {
898 EditorSnapshot {
899 mode: self.mode,
900 display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
901 scroll_position: self.scroll_position,
902 scroll_top_anchor: self.scroll_top_anchor.clone(),
903 placeholder_text: self.placeholder_text.clone(),
904 is_focused: self
905 .handle
906 .upgrade(cx)
907 .map_or(false, |handle| handle.is_focused(cx)),
908 }
909 }
910
911 pub fn language<'a>(&self, cx: &'a AppContext) -> Option<&'a Arc<Language>> {
912 self.buffer.read(cx).language(cx)
913 }
914
915 pub fn set_placeholder_text(
916 &mut self,
917 placeholder_text: impl Into<Arc<str>>,
918 cx: &mut ViewContext<Self>,
919 ) {
920 self.placeholder_text = Some(placeholder_text.into());
921 cx.notify();
922 }
923
924 pub fn set_vertical_scroll_margin(&mut self, margin_rows: usize, cx: &mut ViewContext<Self>) {
925 self.vertical_scroll_margin = margin_rows as f32;
926 cx.notify();
927 }
928
929 pub fn set_scroll_position(&mut self, scroll_position: Vector2F, cx: &mut ViewContext<Self>) {
930 let map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
931
932 if scroll_position.y() == 0. {
933 self.scroll_top_anchor = None;
934 self.scroll_position = scroll_position;
935 } else {
936 let scroll_top_buffer_offset =
937 DisplayPoint::new(scroll_position.y() as u32, 0).to_offset(&map, Bias::Right);
938 let anchor = map
939 .buffer_snapshot
940 .anchor_at(scroll_top_buffer_offset, Bias::Right);
941 self.scroll_position = vec2f(
942 scroll_position.x(),
943 scroll_position.y() - anchor.to_display_point(&map).row() as f32,
944 );
945 self.scroll_top_anchor = Some(anchor);
946 }
947
948 cx.notify();
949 }
950
951 pub fn scroll_position(&self, cx: &mut ViewContext<Self>) -> Vector2F {
952 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
953 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor)
954 }
955
956 pub fn clamp_scroll_left(&mut self, max: f32) -> bool {
957 if max < self.scroll_position.x() {
958 self.scroll_position.set_x(max);
959 true
960 } else {
961 false
962 }
963 }
964
965 pub fn autoscroll_vertically(
966 &mut self,
967 viewport_height: f32,
968 line_height: f32,
969 cx: &mut ViewContext<Self>,
970 ) -> bool {
971 let visible_lines = viewport_height / line_height;
972 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
973 let mut scroll_position =
974 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor);
975 let max_scroll_top = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
976 (display_map.max_point().row() as f32 - visible_lines + 1.).max(0.)
977 } else {
978 display_map.max_point().row().saturating_sub(1) as f32
979 };
980 if scroll_position.y() > max_scroll_top {
981 scroll_position.set_y(max_scroll_top);
982 self.set_scroll_position(scroll_position, cx);
983 }
984
985 let autoscroll = if let Some(autoscroll) = self.autoscroll_request.take() {
986 autoscroll
987 } else {
988 return false;
989 };
990
991 let first_cursor_top;
992 let last_cursor_bottom;
993 if let Some(highlighted_rows) = &self.highlighted_rows {
994 first_cursor_top = highlighted_rows.start as f32;
995 last_cursor_bottom = first_cursor_top + 1.;
996 } else if autoscroll == Autoscroll::Newest {
997 let newest_selection = self.newest_selection::<Point>(&display_map.buffer_snapshot);
998 first_cursor_top = newest_selection.head().to_display_point(&display_map).row() as f32;
999 last_cursor_bottom = first_cursor_top + 1.;
1000 } else {
1001 let selections = self.local_selections::<Point>(cx);
1002 first_cursor_top = selections
1003 .first()
1004 .unwrap()
1005 .head()
1006 .to_display_point(&display_map)
1007 .row() as f32;
1008 last_cursor_bottom = selections
1009 .last()
1010 .unwrap()
1011 .head()
1012 .to_display_point(&display_map)
1013 .row() as f32
1014 + 1.0;
1015 }
1016
1017 let margin = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
1018 0.
1019 } else {
1020 ((visible_lines - (last_cursor_bottom - first_cursor_top)) / 2.0).floor()
1021 };
1022 if margin < 0.0 {
1023 return false;
1024 }
1025
1026 match autoscroll {
1027 Autoscroll::Fit | Autoscroll::Newest => {
1028 let margin = margin.min(self.vertical_scroll_margin);
1029 let target_top = (first_cursor_top - margin).max(0.0);
1030 let target_bottom = last_cursor_bottom + margin;
1031 let start_row = scroll_position.y();
1032 let end_row = start_row + visible_lines;
1033
1034 if target_top < start_row {
1035 scroll_position.set_y(target_top);
1036 self.set_scroll_position(scroll_position, cx);
1037 } else if target_bottom >= end_row {
1038 scroll_position.set_y(target_bottom - visible_lines);
1039 self.set_scroll_position(scroll_position, cx);
1040 }
1041 }
1042 Autoscroll::Center => {
1043 scroll_position.set_y((first_cursor_top - margin).max(0.0));
1044 self.set_scroll_position(scroll_position, cx);
1045 }
1046 }
1047
1048 true
1049 }
1050
1051 pub fn autoscroll_horizontally(
1052 &mut self,
1053 start_row: u32,
1054 viewport_width: f32,
1055 scroll_width: f32,
1056 max_glyph_width: f32,
1057 layouts: &[text_layout::Line],
1058 cx: &mut ViewContext<Self>,
1059 ) -> bool {
1060 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1061 let selections = self.local_selections::<Point>(cx);
1062
1063 let mut target_left;
1064 let mut target_right;
1065
1066 if self.highlighted_rows.is_some() {
1067 target_left = 0.0_f32;
1068 target_right = 0.0_f32;
1069 } else {
1070 target_left = std::f32::INFINITY;
1071 target_right = 0.0_f32;
1072 for selection in selections {
1073 let head = selection.head().to_display_point(&display_map);
1074 if head.row() >= start_row && head.row() < start_row + layouts.len() as u32 {
1075 let start_column = head.column().saturating_sub(3);
1076 let end_column = cmp::min(display_map.line_len(head.row()), head.column() + 3);
1077 target_left = target_left.min(
1078 layouts[(head.row() - start_row) as usize]
1079 .x_for_index(start_column as usize),
1080 );
1081 target_right = target_right.max(
1082 layouts[(head.row() - start_row) as usize].x_for_index(end_column as usize)
1083 + max_glyph_width,
1084 );
1085 }
1086 }
1087 }
1088
1089 target_right = target_right.min(scroll_width);
1090
1091 if target_right - target_left > viewport_width {
1092 return false;
1093 }
1094
1095 let scroll_left = self.scroll_position.x() * max_glyph_width;
1096 let scroll_right = scroll_left + viewport_width;
1097
1098 if target_left < scroll_left {
1099 self.scroll_position.set_x(target_left / max_glyph_width);
1100 true
1101 } else if target_right > scroll_right {
1102 self.scroll_position
1103 .set_x((target_right - viewport_width) / max_glyph_width);
1104 true
1105 } else {
1106 false
1107 }
1108 }
1109
1110 fn select(&mut self, Select(phase): &Select, cx: &mut ViewContext<Self>) {
1111 self.hide_context_menu(cx);
1112
1113 match phase {
1114 SelectPhase::Begin {
1115 position,
1116 add,
1117 click_count,
1118 } => self.begin_selection(*position, *add, *click_count, cx),
1119 SelectPhase::BeginColumnar {
1120 position,
1121 overshoot,
1122 } => self.begin_columnar_selection(*position, *overshoot, cx),
1123 SelectPhase::Extend {
1124 position,
1125 click_count,
1126 } => self.extend_selection(*position, *click_count, cx),
1127 SelectPhase::Update {
1128 position,
1129 overshoot,
1130 scroll_position,
1131 } => self.update_selection(*position, *overshoot, *scroll_position, cx),
1132 SelectPhase::End => self.end_selection(cx),
1133 }
1134 }
1135
1136 fn extend_selection(
1137 &mut self,
1138 position: DisplayPoint,
1139 click_count: usize,
1140 cx: &mut ViewContext<Self>,
1141 ) {
1142 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1143 let tail = self
1144 .newest_selection::<usize>(&display_map.buffer_snapshot)
1145 .tail();
1146 self.begin_selection(position, false, click_count, cx);
1147
1148 let position = position.to_offset(&display_map, Bias::Left);
1149 let tail_anchor = display_map.buffer_snapshot.anchor_before(tail);
1150 let pending = self.pending_selection.as_mut().unwrap();
1151
1152 if position >= tail {
1153 pending.selection.start = tail_anchor.clone();
1154 } else {
1155 pending.selection.end = tail_anchor.clone();
1156 pending.selection.reversed = true;
1157 }
1158
1159 match &mut pending.mode {
1160 SelectMode::Word(range) | SelectMode::Line(range) => {
1161 *range = tail_anchor.clone()..tail_anchor
1162 }
1163 _ => {}
1164 }
1165 }
1166
1167 fn begin_selection(
1168 &mut self,
1169 position: DisplayPoint,
1170 add: bool,
1171 click_count: usize,
1172 cx: &mut ViewContext<Self>,
1173 ) {
1174 if !self.focused {
1175 cx.focus_self();
1176 cx.emit(Event::Activate);
1177 }
1178
1179 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1180 let buffer = &display_map.buffer_snapshot;
1181 let newest_selection = self.newest_anchor_selection().unwrap().clone();
1182
1183 let start;
1184 let end;
1185 let mode;
1186 match click_count {
1187 1 => {
1188 start = buffer.anchor_before(position.to_point(&display_map));
1189 end = start.clone();
1190 mode = SelectMode::Character;
1191 }
1192 2 => {
1193 let range = movement::surrounding_word(&display_map, position);
1194 start = buffer.anchor_before(range.start.to_point(&display_map));
1195 end = buffer.anchor_before(range.end.to_point(&display_map));
1196 mode = SelectMode::Word(start.clone()..end.clone());
1197 }
1198 3 => {
1199 let position = display_map
1200 .clip_point(position, Bias::Left)
1201 .to_point(&display_map);
1202 let line_start = display_map.prev_line_boundary(position).0;
1203 let next_line_start = buffer.clip_point(
1204 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1205 Bias::Left,
1206 );
1207 start = buffer.anchor_before(line_start);
1208 end = buffer.anchor_before(next_line_start);
1209 mode = SelectMode::Line(start.clone()..end.clone());
1210 }
1211 _ => {
1212 start = buffer.anchor_before(0);
1213 end = buffer.anchor_before(buffer.len());
1214 mode = SelectMode::All;
1215 }
1216 }
1217
1218 self.push_to_nav_history(newest_selection.head(), Some(end.to_point(&buffer)), cx);
1219
1220 let selection = Selection {
1221 id: post_inc(&mut self.next_selection_id),
1222 start,
1223 end,
1224 reversed: false,
1225 goal: SelectionGoal::None,
1226 };
1227
1228 if !add {
1229 self.update_selections::<usize>(Vec::new(), None, cx);
1230 } else if click_count > 1 {
1231 // Remove the newest selection since it was only added as part of this multi-click.
1232 let mut selections = self.local_selections(cx);
1233 selections.retain(|selection| selection.id != newest_selection.id);
1234 self.update_selections::<usize>(selections, None, cx)
1235 }
1236
1237 self.pending_selection = Some(PendingSelection { selection, mode });
1238
1239 cx.notify();
1240 }
1241
1242 fn begin_columnar_selection(
1243 &mut self,
1244 position: DisplayPoint,
1245 overshoot: u32,
1246 cx: &mut ViewContext<Self>,
1247 ) {
1248 if !self.focused {
1249 cx.focus_self();
1250 cx.emit(Event::Activate);
1251 }
1252
1253 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1254 let tail = self
1255 .newest_selection::<Point>(&display_map.buffer_snapshot)
1256 .tail();
1257 self.columnar_selection_tail = Some(display_map.buffer_snapshot.anchor_before(tail));
1258
1259 self.select_columns(
1260 tail.to_display_point(&display_map),
1261 position,
1262 overshoot,
1263 &display_map,
1264 cx,
1265 );
1266 }
1267
1268 fn update_selection(
1269 &mut self,
1270 position: DisplayPoint,
1271 overshoot: u32,
1272 scroll_position: Vector2F,
1273 cx: &mut ViewContext<Self>,
1274 ) {
1275 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1276
1277 if let Some(tail) = self.columnar_selection_tail.as_ref() {
1278 let tail = tail.to_display_point(&display_map);
1279 self.select_columns(tail, position, overshoot, &display_map, cx);
1280 } else if let Some(PendingSelection { selection, mode }) = self.pending_selection.as_mut() {
1281 let buffer = self.buffer.read(cx).snapshot(cx);
1282 let head;
1283 let tail;
1284 match mode {
1285 SelectMode::Character => {
1286 head = position.to_point(&display_map);
1287 tail = selection.tail().to_point(&buffer);
1288 }
1289 SelectMode::Word(original_range) => {
1290 let original_display_range = original_range.start.to_display_point(&display_map)
1291 ..original_range.end.to_display_point(&display_map);
1292 let original_buffer_range = original_display_range.start.to_point(&display_map)
1293 ..original_display_range.end.to_point(&display_map);
1294 if movement::is_inside_word(&display_map, position)
1295 || original_display_range.contains(&position)
1296 {
1297 let word_range = movement::surrounding_word(&display_map, position);
1298 if word_range.start < original_display_range.start {
1299 head = word_range.start.to_point(&display_map);
1300 } else {
1301 head = word_range.end.to_point(&display_map);
1302 }
1303 } else {
1304 head = position.to_point(&display_map);
1305 }
1306
1307 if head <= original_buffer_range.start {
1308 tail = original_buffer_range.end;
1309 } else {
1310 tail = original_buffer_range.start;
1311 }
1312 }
1313 SelectMode::Line(original_range) => {
1314 let original_range = original_range.to_point(&display_map.buffer_snapshot);
1315
1316 let position = display_map
1317 .clip_point(position, Bias::Left)
1318 .to_point(&display_map);
1319 let line_start = display_map.prev_line_boundary(position).0;
1320 let next_line_start = buffer.clip_point(
1321 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1322 Bias::Left,
1323 );
1324
1325 if line_start < original_range.start {
1326 head = line_start
1327 } else {
1328 head = next_line_start
1329 }
1330
1331 if head <= original_range.start {
1332 tail = original_range.end;
1333 } else {
1334 tail = original_range.start;
1335 }
1336 }
1337 SelectMode::All => {
1338 return;
1339 }
1340 };
1341
1342 if head < tail {
1343 selection.start = buffer.anchor_before(head);
1344 selection.end = buffer.anchor_before(tail);
1345 selection.reversed = true;
1346 } else {
1347 selection.start = buffer.anchor_before(tail);
1348 selection.end = buffer.anchor_before(head);
1349 selection.reversed = false;
1350 }
1351 } else {
1352 log::error!("update_selection dispatched with no pending selection");
1353 return;
1354 }
1355
1356 self.set_scroll_position(scroll_position, cx);
1357 cx.notify();
1358 }
1359
1360 fn end_selection(&mut self, cx: &mut ViewContext<Self>) {
1361 self.columnar_selection_tail.take();
1362 if self.pending_selection.is_some() {
1363 let selections = self.local_selections::<usize>(cx);
1364 self.update_selections(selections, None, cx);
1365 }
1366 }
1367
1368 fn select_columns(
1369 &mut self,
1370 tail: DisplayPoint,
1371 head: DisplayPoint,
1372 overshoot: u32,
1373 display_map: &DisplaySnapshot,
1374 cx: &mut ViewContext<Self>,
1375 ) {
1376 let start_row = cmp::min(tail.row(), head.row());
1377 let end_row = cmp::max(tail.row(), head.row());
1378 let start_column = cmp::min(tail.column(), head.column() + overshoot);
1379 let end_column = cmp::max(tail.column(), head.column() + overshoot);
1380 let reversed = start_column < tail.column();
1381
1382 let selections = (start_row..=end_row)
1383 .filter_map(|row| {
1384 if start_column <= display_map.line_len(row) && !display_map.is_block_line(row) {
1385 let start = display_map
1386 .clip_point(DisplayPoint::new(row, start_column), Bias::Left)
1387 .to_point(&display_map);
1388 let end = display_map
1389 .clip_point(DisplayPoint::new(row, end_column), Bias::Right)
1390 .to_point(&display_map);
1391 Some(Selection {
1392 id: post_inc(&mut self.next_selection_id),
1393 start,
1394 end,
1395 reversed,
1396 goal: SelectionGoal::None,
1397 })
1398 } else {
1399 None
1400 }
1401 })
1402 .collect::<Vec<_>>();
1403
1404 self.update_selections(selections, None, cx);
1405 cx.notify();
1406 }
1407
1408 pub fn is_selecting(&self) -> bool {
1409 self.pending_selection.is_some() || self.columnar_selection_tail.is_some()
1410 }
1411
1412 pub fn cancel(&mut self, _: &Cancel, cx: &mut ViewContext<Self>) {
1413 if self.hide_context_menu(cx).is_some() {
1414 return;
1415 }
1416
1417 if self.snippet_stack.pop().is_some() {
1418 return;
1419 }
1420
1421 if self.mode != EditorMode::Full {
1422 cx.propagate_action();
1423 return;
1424 }
1425
1426 if self.active_diagnostics.is_some() {
1427 self.dismiss_diagnostics(cx);
1428 } else if let Some(PendingSelection { selection, .. }) = self.pending_selection.take() {
1429 let buffer = self.buffer.read(cx).snapshot(cx);
1430 let selection = Selection {
1431 id: selection.id,
1432 start: selection.start.to_point(&buffer),
1433 end: selection.end.to_point(&buffer),
1434 reversed: selection.reversed,
1435 goal: selection.goal,
1436 };
1437 if self.local_selections::<Point>(cx).is_empty() {
1438 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
1439 }
1440 } else {
1441 let buffer = self.buffer.read(cx).snapshot(cx);
1442 let mut oldest_selection = self.oldest_selection::<usize>(&buffer);
1443 if self.selection_count() == 1 {
1444 if oldest_selection.is_empty() {
1445 cx.propagate_action();
1446 return;
1447 }
1448
1449 oldest_selection.start = oldest_selection.head().clone();
1450 oldest_selection.end = oldest_selection.head().clone();
1451 }
1452 self.update_selections(vec![oldest_selection], Some(Autoscroll::Fit), cx);
1453 }
1454 }
1455
1456 #[cfg(any(test, feature = "test-support"))]
1457 pub fn selected_ranges<D: TextDimension + Ord + Sub<D, Output = D>>(
1458 &self,
1459 cx: &mut MutableAppContext,
1460 ) -> Vec<Range<D>> {
1461 self.local_selections::<D>(cx)
1462 .iter()
1463 .map(|s| {
1464 if s.reversed {
1465 s.end.clone()..s.start.clone()
1466 } else {
1467 s.start.clone()..s.end.clone()
1468 }
1469 })
1470 .collect()
1471 }
1472
1473 #[cfg(any(test, feature = "test-support"))]
1474 pub fn selected_display_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
1475 let display_map = self
1476 .display_map
1477 .update(cx, |display_map, cx| display_map.snapshot(cx));
1478 self.selections
1479 .iter()
1480 .chain(
1481 self.pending_selection
1482 .as_ref()
1483 .map(|pending| &pending.selection),
1484 )
1485 .map(|s| {
1486 if s.reversed {
1487 s.end.to_display_point(&display_map)..s.start.to_display_point(&display_map)
1488 } else {
1489 s.start.to_display_point(&display_map)..s.end.to_display_point(&display_map)
1490 }
1491 })
1492 .collect()
1493 }
1494
1495 pub fn select_ranges<I, T>(
1496 &mut self,
1497 ranges: I,
1498 autoscroll: Option<Autoscroll>,
1499 cx: &mut ViewContext<Self>,
1500 ) where
1501 I: IntoIterator<Item = Range<T>>,
1502 T: ToOffset,
1503 {
1504 let buffer = self.buffer.read(cx).snapshot(cx);
1505 let selections = ranges
1506 .into_iter()
1507 .map(|range| {
1508 let mut start = range.start.to_offset(&buffer);
1509 let mut end = range.end.to_offset(&buffer);
1510 let reversed = if start > end {
1511 mem::swap(&mut start, &mut end);
1512 true
1513 } else {
1514 false
1515 };
1516 Selection {
1517 id: post_inc(&mut self.next_selection_id),
1518 start,
1519 end,
1520 reversed,
1521 goal: SelectionGoal::None,
1522 }
1523 })
1524 .collect::<Vec<_>>();
1525 self.update_selections(selections, autoscroll, cx);
1526 }
1527
1528 #[cfg(any(test, feature = "test-support"))]
1529 pub fn select_display_ranges<'a, T>(&mut self, ranges: T, cx: &mut ViewContext<Self>)
1530 where
1531 T: IntoIterator<Item = &'a Range<DisplayPoint>>,
1532 {
1533 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1534 let selections = ranges
1535 .into_iter()
1536 .map(|range| {
1537 let mut start = range.start;
1538 let mut end = range.end;
1539 let reversed = if start > end {
1540 mem::swap(&mut start, &mut end);
1541 true
1542 } else {
1543 false
1544 };
1545 Selection {
1546 id: post_inc(&mut self.next_selection_id),
1547 start: start.to_point(&display_map),
1548 end: end.to_point(&display_map),
1549 reversed,
1550 goal: SelectionGoal::None,
1551 }
1552 })
1553 .collect();
1554 self.update_selections(selections, None, cx);
1555 }
1556
1557 pub fn handle_input(&mut self, action: &Input, cx: &mut ViewContext<Self>) {
1558 let text = action.0.as_ref();
1559 if !self.skip_autoclose_end(text, cx) {
1560 self.start_transaction(cx);
1561 self.insert(text, cx);
1562 self.autoclose_pairs(cx);
1563 self.end_transaction(cx);
1564 self.trigger_completion_on_input(text, cx);
1565 }
1566 }
1567
1568 pub fn newline(&mut self, _: &Newline, cx: &mut ViewContext<Self>) {
1569 self.start_transaction(cx);
1570 let mut old_selections = SmallVec::<[_; 32]>::new();
1571 {
1572 let selections = self.local_selections::<usize>(cx);
1573 let buffer = self.buffer.read(cx).snapshot(cx);
1574 for selection in selections.iter() {
1575 let start_point = selection.start.to_point(&buffer);
1576 let indent = buffer
1577 .indent_column_for_line(start_point.row)
1578 .min(start_point.column);
1579 let start = selection.start;
1580 let end = selection.end;
1581
1582 let mut insert_extra_newline = false;
1583 if let Some(language) = buffer.language() {
1584 let leading_whitespace_len = buffer
1585 .reversed_chars_at(start)
1586 .take_while(|c| c.is_whitespace() && *c != '\n')
1587 .map(|c| c.len_utf8())
1588 .sum::<usize>();
1589
1590 let trailing_whitespace_len = buffer
1591 .chars_at(end)
1592 .take_while(|c| c.is_whitespace() && *c != '\n')
1593 .map(|c| c.len_utf8())
1594 .sum::<usize>();
1595
1596 insert_extra_newline = language.brackets().iter().any(|pair| {
1597 let pair_start = pair.start.trim_end();
1598 let pair_end = pair.end.trim_start();
1599
1600 pair.newline
1601 && buffer.contains_str_at(end + trailing_whitespace_len, pair_end)
1602 && buffer.contains_str_at(
1603 (start - leading_whitespace_len).saturating_sub(pair_start.len()),
1604 pair_start,
1605 )
1606 });
1607 }
1608
1609 old_selections.push((
1610 selection.id,
1611 buffer.anchor_after(end),
1612 start..end,
1613 indent,
1614 insert_extra_newline,
1615 ));
1616 }
1617 }
1618
1619 self.buffer.update(cx, |buffer, cx| {
1620 let mut delta = 0_isize;
1621 let mut pending_edit: Option<PendingEdit> = None;
1622 for (_, _, range, indent, insert_extra_newline) in &old_selections {
1623 if pending_edit.as_ref().map_or(false, |pending| {
1624 pending.indent != *indent
1625 || pending.insert_extra_newline != *insert_extra_newline
1626 }) {
1627 let pending = pending_edit.take().unwrap();
1628 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1629 new_text.push('\n');
1630 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1631 if pending.insert_extra_newline {
1632 new_text = new_text.repeat(2);
1633 }
1634 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1635 delta += pending.delta;
1636 }
1637
1638 let start = (range.start as isize + delta) as usize;
1639 let end = (range.end as isize + delta) as usize;
1640 let mut text_len = *indent as usize + 1;
1641 if *insert_extra_newline {
1642 text_len *= 2;
1643 }
1644
1645 let pending = pending_edit.get_or_insert_with(Default::default);
1646 pending.delta += text_len as isize - (end - start) as isize;
1647 pending.indent = *indent;
1648 pending.insert_extra_newline = *insert_extra_newline;
1649 pending.ranges.push(start..end);
1650 }
1651
1652 let pending = pending_edit.unwrap();
1653 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1654 new_text.push('\n');
1655 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1656 if pending.insert_extra_newline {
1657 new_text = new_text.repeat(2);
1658 }
1659 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1660
1661 let buffer = buffer.read(cx);
1662 self.selections = self
1663 .selections
1664 .iter()
1665 .cloned()
1666 .zip(old_selections)
1667 .map(
1668 |(mut new_selection, (_, end_anchor, _, _, insert_extra_newline))| {
1669 let mut cursor = end_anchor.to_point(&buffer);
1670 if insert_extra_newline {
1671 cursor.row -= 1;
1672 cursor.column = buffer.line_len(cursor.row);
1673 }
1674 let anchor = buffer.anchor_after(cursor);
1675 new_selection.start = anchor.clone();
1676 new_selection.end = anchor;
1677 new_selection
1678 },
1679 )
1680 .collect();
1681 });
1682
1683 self.request_autoscroll(Autoscroll::Fit, cx);
1684 self.end_transaction(cx);
1685
1686 #[derive(Default)]
1687 struct PendingEdit {
1688 indent: u32,
1689 insert_extra_newline: bool,
1690 delta: isize,
1691 ranges: SmallVec<[Range<usize>; 32]>,
1692 }
1693 }
1694
1695 pub fn insert(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1696 self.start_transaction(cx);
1697
1698 let old_selections = self.local_selections::<usize>(cx);
1699 let selection_anchors = self.buffer.update(cx, |buffer, cx| {
1700 let anchors = {
1701 let snapshot = buffer.read(cx);
1702 old_selections
1703 .iter()
1704 .map(|s| (s.id, s.goal, snapshot.anchor_after(s.end)))
1705 .collect::<Vec<_>>()
1706 };
1707 let edit_ranges = old_selections.iter().map(|s| s.start..s.end);
1708 buffer.edit_with_autoindent(edit_ranges, text, cx);
1709 anchors
1710 });
1711
1712 let selections = {
1713 let snapshot = self.buffer.read(cx).read(cx);
1714 selection_anchors
1715 .into_iter()
1716 .map(|(id, goal, position)| {
1717 let position = position.to_offset(&snapshot);
1718 Selection {
1719 id,
1720 start: position,
1721 end: position,
1722 goal,
1723 reversed: false,
1724 }
1725 })
1726 .collect()
1727 };
1728 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1729 self.end_transaction(cx);
1730 }
1731
1732 fn trigger_completion_on_input(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1733 if let Some(selection) = self.newest_anchor_selection() {
1734 if self
1735 .buffer
1736 .read(cx)
1737 .is_completion_trigger(selection.head(), text, cx)
1738 {
1739 self.show_completions(&ShowCompletions, cx);
1740 } else {
1741 self.hide_context_menu(cx);
1742 }
1743 }
1744 }
1745
1746 fn autoclose_pairs(&mut self, cx: &mut ViewContext<Self>) {
1747 let selections = self.local_selections::<usize>(cx);
1748 let mut bracket_pair_state = None;
1749 let mut new_selections = None;
1750 self.buffer.update(cx, |buffer, cx| {
1751 let mut snapshot = buffer.snapshot(cx);
1752 let left_biased_selections = selections
1753 .iter()
1754 .map(|selection| Selection {
1755 id: selection.id,
1756 start: snapshot.anchor_before(selection.start),
1757 end: snapshot.anchor_before(selection.end),
1758 reversed: selection.reversed,
1759 goal: selection.goal,
1760 })
1761 .collect::<Vec<_>>();
1762
1763 let autoclose_pair = snapshot.language().and_then(|language| {
1764 let first_selection_start = selections.first().unwrap().start;
1765 let pair = language.brackets().iter().find(|pair| {
1766 snapshot.contains_str_at(
1767 first_selection_start.saturating_sub(pair.start.len()),
1768 &pair.start,
1769 )
1770 });
1771 pair.and_then(|pair| {
1772 let should_autoclose = selections[1..].iter().all(|selection| {
1773 snapshot.contains_str_at(
1774 selection.start.saturating_sub(pair.start.len()),
1775 &pair.start,
1776 )
1777 });
1778
1779 if should_autoclose {
1780 Some(pair.clone())
1781 } else {
1782 None
1783 }
1784 })
1785 });
1786
1787 if let Some(pair) = autoclose_pair {
1788 let selection_ranges = selections
1789 .iter()
1790 .map(|selection| {
1791 let start = selection.start.to_offset(&snapshot);
1792 start..start
1793 })
1794 .collect::<SmallVec<[_; 32]>>();
1795
1796 buffer.edit(selection_ranges, &pair.end, cx);
1797 snapshot = buffer.snapshot(cx);
1798
1799 new_selections = Some(
1800 self.resolve_selections::<usize, _>(left_biased_selections.iter(), &snapshot)
1801 .collect::<Vec<_>>(),
1802 );
1803
1804 if pair.end.len() == 1 {
1805 let mut delta = 0;
1806 bracket_pair_state = Some(BracketPairState {
1807 ranges: selections
1808 .iter()
1809 .map(move |selection| {
1810 let offset = selection.start + delta;
1811 delta += 1;
1812 snapshot.anchor_before(offset)..snapshot.anchor_after(offset)
1813 })
1814 .collect(),
1815 pair,
1816 });
1817 }
1818 }
1819 });
1820
1821 if let Some(new_selections) = new_selections {
1822 self.update_selections(new_selections, None, cx);
1823 }
1824 if let Some(bracket_pair_state) = bracket_pair_state {
1825 self.autoclose_stack.push(bracket_pair_state);
1826 }
1827 }
1828
1829 fn skip_autoclose_end(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
1830 let old_selections = self.local_selections::<usize>(cx);
1831 let autoclose_pair = if let Some(autoclose_pair) = self.autoclose_stack.last() {
1832 autoclose_pair
1833 } else {
1834 return false;
1835 };
1836 if text != autoclose_pair.pair.end {
1837 return false;
1838 }
1839
1840 debug_assert_eq!(old_selections.len(), autoclose_pair.ranges.len());
1841
1842 let buffer = self.buffer.read(cx).snapshot(cx);
1843 if old_selections
1844 .iter()
1845 .zip(autoclose_pair.ranges.iter().map(|r| r.to_offset(&buffer)))
1846 .all(|(selection, autoclose_range)| {
1847 let autoclose_range_end = autoclose_range.end.to_offset(&buffer);
1848 selection.is_empty() && selection.start == autoclose_range_end
1849 })
1850 {
1851 let new_selections = old_selections
1852 .into_iter()
1853 .map(|selection| {
1854 let cursor = selection.start + 1;
1855 Selection {
1856 id: selection.id,
1857 start: cursor,
1858 end: cursor,
1859 reversed: false,
1860 goal: SelectionGoal::None,
1861 }
1862 })
1863 .collect();
1864 self.autoclose_stack.pop();
1865 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1866 true
1867 } else {
1868 false
1869 }
1870 }
1871
1872 fn completion_query(buffer: &MultiBufferSnapshot, position: impl ToOffset) -> Option<String> {
1873 let offset = position.to_offset(buffer);
1874 let (word_range, kind) = buffer.surrounding_word(offset);
1875 if offset > word_range.start && kind == Some(CharKind::Word) {
1876 Some(
1877 buffer
1878 .text_for_range(word_range.start..offset)
1879 .collect::<String>(),
1880 )
1881 } else {
1882 None
1883 }
1884 }
1885
1886 fn show_completions(&mut self, _: &ShowCompletions, cx: &mut ViewContext<Self>) {
1887 let project = if let Some(project) = self.project.clone() {
1888 project
1889 } else {
1890 return;
1891 };
1892
1893 let position = if let Some(selection) = self.newest_anchor_selection() {
1894 selection.head()
1895 } else {
1896 return;
1897 };
1898 let (buffer, buffer_position) = self
1899 .buffer
1900 .read(cx)
1901 .text_anchor_for_position(position.clone(), cx);
1902
1903 let query = Self::completion_query(&self.buffer.read(cx).read(cx), position.clone());
1904 let completions = project.update(cx, |project, cx| {
1905 project.completions(&buffer, buffer_position.clone(), cx)
1906 });
1907
1908 let id = post_inc(&mut self.next_completion_id);
1909 let task = cx.spawn_weak(|this, mut cx| {
1910 async move {
1911 let completions = completions.await?;
1912 if completions.is_empty() {
1913 return Ok(());
1914 }
1915
1916 let mut menu = CompletionsMenu {
1917 id,
1918 initial_position: position,
1919 match_candidates: completions
1920 .iter()
1921 .enumerate()
1922 .map(|(id, completion)| {
1923 StringMatchCandidate::new(
1924 id,
1925 completion.label.text[completion.label.filter_range.clone()].into(),
1926 )
1927 })
1928 .collect(),
1929 buffer,
1930 completions: completions.into(),
1931 matches: Vec::new().into(),
1932 selected_item: 0,
1933 list: Default::default(),
1934 };
1935
1936 menu.filter(query.as_deref(), cx.background()).await;
1937
1938 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
1939 this.update(&mut cx, |this, cx| {
1940 match this.context_menu.as_ref() {
1941 None => {}
1942 Some(ContextMenu::Completions(prev_menu)) => {
1943 if prev_menu.id > menu.id {
1944 return;
1945 }
1946 }
1947 _ => return,
1948 }
1949
1950 this.completion_tasks.retain(|(id, _)| *id > menu.id);
1951 if this.focused {
1952 this.show_context_menu(ContextMenu::Completions(menu), cx);
1953 }
1954
1955 cx.notify();
1956 });
1957 }
1958 Ok::<_, anyhow::Error>(())
1959 }
1960 .log_err()
1961 });
1962 self.completion_tasks.push((id, task));
1963 }
1964
1965 pub fn confirm_completion(
1966 &mut self,
1967 ConfirmCompletion(completion_ix): &ConfirmCompletion,
1968 cx: &mut ViewContext<Self>,
1969 ) -> Option<Task<Result<()>>> {
1970 use language::ToOffset as _;
1971
1972 let completions_menu = if let ContextMenu::Completions(menu) = self.hide_context_menu(cx)? {
1973 menu
1974 } else {
1975 return None;
1976 };
1977
1978 let mat = completions_menu
1979 .matches
1980 .get(completion_ix.unwrap_or(completions_menu.selected_item))?;
1981 let buffer_handle = completions_menu.buffer;
1982 let completion = completions_menu.completions.get(mat.candidate_id)?;
1983
1984 let snippet;
1985 let text;
1986 if completion.is_snippet() {
1987 snippet = Some(Snippet::parse(&completion.new_text).log_err()?);
1988 text = snippet.as_ref().unwrap().text.clone();
1989 } else {
1990 snippet = None;
1991 text = completion.new_text.clone();
1992 };
1993 let buffer = buffer_handle.read(cx);
1994 let old_range = completion.old_range.to_offset(&buffer);
1995 let old_text = buffer.text_for_range(old_range.clone()).collect::<String>();
1996
1997 let selections = self.local_selections::<usize>(cx);
1998 let newest_selection = self.newest_anchor_selection()?;
1999 if newest_selection.start.buffer_id != buffer_handle.id() {
2000 return None;
2001 }
2002
2003 let lookbehind = newest_selection
2004 .start
2005 .text_anchor
2006 .to_offset(buffer)
2007 .saturating_sub(old_range.start);
2008 let lookahead = old_range
2009 .end
2010 .saturating_sub(newest_selection.end.text_anchor.to_offset(buffer));
2011 let mut common_prefix_len = old_text
2012 .bytes()
2013 .zip(text.bytes())
2014 .take_while(|(a, b)| a == b)
2015 .count();
2016
2017 let snapshot = self.buffer.read(cx).snapshot(cx);
2018 let mut ranges = Vec::new();
2019 for selection in &selections {
2020 if snapshot.contains_str_at(selection.start.saturating_sub(lookbehind), &old_text) {
2021 let start = selection.start.saturating_sub(lookbehind);
2022 let end = selection.end + lookahead;
2023 ranges.push(start + common_prefix_len..end);
2024 } else {
2025 common_prefix_len = 0;
2026 ranges.clear();
2027 ranges.extend(selections.iter().map(|s| {
2028 if s.id == newest_selection.id {
2029 old_range.clone()
2030 } else {
2031 s.start..s.end
2032 }
2033 }));
2034 break;
2035 }
2036 }
2037 let text = &text[common_prefix_len..];
2038
2039 self.start_transaction(cx);
2040 if let Some(mut snippet) = snippet {
2041 snippet.text = text.to_string();
2042 for tabstop in snippet.tabstops.iter_mut().flatten() {
2043 tabstop.start -= common_prefix_len as isize;
2044 tabstop.end -= common_prefix_len as isize;
2045 }
2046
2047 self.insert_snippet(&ranges, snippet, cx).log_err();
2048 } else {
2049 self.buffer.update(cx, |buffer, cx| {
2050 buffer.edit_with_autoindent(ranges, text, cx);
2051 });
2052 }
2053 self.end_transaction(cx);
2054
2055 let project = self.project.clone()?;
2056 let apply_edits = project.update(cx, |project, cx| {
2057 project.apply_additional_edits_for_completion(
2058 buffer_handle,
2059 completion.clone(),
2060 true,
2061 cx,
2062 )
2063 });
2064 Some(cx.foreground().spawn(async move {
2065 apply_edits.await?;
2066 Ok(())
2067 }))
2068 }
2069
2070 fn show_code_actions(&mut self, _: &ShowCodeActions, cx: &mut ViewContext<Self>) {
2071 let head = if let Some(selection) = self.newest_anchor_selection() {
2072 selection.head()
2073 } else {
2074 return;
2075 };
2076 let project = if let Some(project) = self.project.clone() {
2077 project
2078 } else {
2079 return;
2080 };
2081
2082 let (buffer, head) = self.buffer.read(cx).text_anchor_for_position(head, cx);
2083 let actions = project.update(cx, |project, cx| project.code_actions(&buffer, head, cx));
2084
2085 cx.spawn(|this, mut cx| async move {
2086 let actions = actions.await?;
2087 if !actions.is_empty() {
2088 this.update(&mut cx, |this, cx| {
2089 if this.focused {
2090 this.show_context_menu(
2091 ContextMenu::CodeActions(CodeActionsMenu {
2092 buffer,
2093 actions: actions.into(),
2094 selected_item: 0,
2095 list: UniformListState::default(),
2096 }),
2097 cx,
2098 );
2099 }
2100 });
2101 }
2102 Ok::<_, anyhow::Error>(())
2103 })
2104 .detach_and_log_err(cx);
2105 }
2106
2107 fn confirm_code_action(
2108 workspace: &mut Workspace,
2109 ConfirmCodeAction(action_ix): &ConfirmCodeAction,
2110 cx: &mut ViewContext<Workspace>,
2111 ) -> Option<Task<Result<()>>> {
2112 let editor = workspace.active_item(cx)?.act_as::<Editor>(cx)?;
2113 let actions_menu = if let ContextMenu::CodeActions(menu) =
2114 editor.update(cx, |editor, cx| editor.hide_context_menu(cx))?
2115 {
2116 menu
2117 } else {
2118 return None;
2119 };
2120 let action_ix = action_ix.unwrap_or(actions_menu.selected_item);
2121 let action = actions_menu.actions.get(action_ix)?.clone();
2122 let buffer = actions_menu.buffer;
2123
2124 let apply_code_actions = workspace.project().clone().update(cx, |project, cx| {
2125 project.apply_code_action(buffer, action, true, cx)
2126 });
2127 Some(cx.spawn(|workspace, mut cx| async move {
2128 let project_transaction = apply_code_actions.await?;
2129
2130 // TODO: replace this with opening a single tab that is a multibuffer
2131 workspace.update(&mut cx, |workspace, cx| {
2132 for (buffer, _) in project_transaction.0 {
2133 workspace.open_item(BufferItemHandle(buffer), cx);
2134 }
2135 });
2136
2137 Ok(())
2138 }))
2139 }
2140
2141 pub fn showing_context_menu(&self) -> bool {
2142 self.context_menu
2143 .as_ref()
2144 .map_or(false, |menu| menu.visible())
2145 }
2146
2147 pub fn render_context_menu(&self, cx: &AppContext) -> Option<ElementBox> {
2148 self.context_menu
2149 .as_ref()
2150 .map(|menu| menu.render(self.build_settings.clone(), cx))
2151 }
2152
2153 fn show_context_menu(&mut self, menu: ContextMenu, cx: &mut ViewContext<Self>) {
2154 if !matches!(menu, ContextMenu::Completions(_)) {
2155 self.completion_tasks.clear();
2156 }
2157 self.context_menu = Some(menu);
2158 cx.notify()
2159 }
2160
2161 fn hide_context_menu(&mut self, cx: &mut ViewContext<Self>) -> Option<ContextMenu> {
2162 cx.notify();
2163 self.completion_tasks.clear();
2164 self.context_menu.take()
2165 }
2166
2167 pub fn insert_snippet(
2168 &mut self,
2169 insertion_ranges: &[Range<usize>],
2170 snippet: Snippet,
2171 cx: &mut ViewContext<Self>,
2172 ) -> Result<()> {
2173 let tabstops = self.buffer.update(cx, |buffer, cx| {
2174 buffer.edit_with_autoindent(insertion_ranges.iter().cloned(), &snippet.text, cx);
2175
2176 let snapshot = &*buffer.read(cx);
2177 let snippet = &snippet;
2178 snippet
2179 .tabstops
2180 .iter()
2181 .map(|tabstop| {
2182 let mut tabstop_ranges = tabstop
2183 .iter()
2184 .flat_map(|tabstop_range| {
2185 let mut delta = 0 as isize;
2186 insertion_ranges.iter().map(move |insertion_range| {
2187 let insertion_start = insertion_range.start as isize + delta;
2188 delta +=
2189 snippet.text.len() as isize - insertion_range.len() as isize;
2190
2191 let start = snapshot.anchor_before(
2192 (insertion_start + tabstop_range.start) as usize,
2193 );
2194 let end = snapshot
2195 .anchor_after((insertion_start + tabstop_range.end) as usize);
2196 start..end
2197 })
2198 })
2199 .collect::<Vec<_>>();
2200 tabstop_ranges
2201 .sort_unstable_by(|a, b| a.start.cmp(&b.start, snapshot).unwrap());
2202 tabstop_ranges
2203 })
2204 .collect::<Vec<_>>()
2205 });
2206
2207 if let Some(tabstop) = tabstops.first() {
2208 self.select_ranges(tabstop.iter().cloned(), Some(Autoscroll::Fit), cx);
2209 self.snippet_stack.push(SnippetState {
2210 active_index: 0,
2211 ranges: tabstops,
2212 });
2213 }
2214
2215 Ok(())
2216 }
2217
2218 pub fn move_to_next_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) -> bool {
2219 self.move_to_snippet_tabstop(Bias::Right, cx)
2220 }
2221
2222 pub fn move_to_prev_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) {
2223 self.move_to_snippet_tabstop(Bias::Left, cx);
2224 }
2225
2226 pub fn move_to_snippet_tabstop(&mut self, bias: Bias, cx: &mut ViewContext<Self>) -> bool {
2227 let buffer = self.buffer.read(cx).snapshot(cx);
2228
2229 if let Some(snippet) = self.snippet_stack.last_mut() {
2230 match bias {
2231 Bias::Left => {
2232 if snippet.active_index > 0 {
2233 snippet.active_index -= 1;
2234 } else {
2235 return false;
2236 }
2237 }
2238 Bias::Right => {
2239 if snippet.active_index + 1 < snippet.ranges.len() {
2240 snippet.active_index += 1;
2241 } else {
2242 return false;
2243 }
2244 }
2245 }
2246 if let Some(current_ranges) = snippet.ranges.get(snippet.active_index) {
2247 let new_selections = current_ranges
2248 .iter()
2249 .map(|new_range| {
2250 let new_range = new_range.to_offset(&buffer);
2251 Selection {
2252 id: post_inc(&mut self.next_selection_id),
2253 start: new_range.start,
2254 end: new_range.end,
2255 reversed: false,
2256 goal: SelectionGoal::None,
2257 }
2258 })
2259 .collect();
2260
2261 // Remove the snippet state when moving to the last tabstop.
2262 if snippet.active_index + 1 == snippet.ranges.len() {
2263 self.snippet_stack.pop();
2264 }
2265
2266 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2267 return true;
2268 }
2269 self.snippet_stack.pop();
2270 }
2271
2272 false
2273 }
2274
2275 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
2276 self.start_transaction(cx);
2277 self.select_all(&SelectAll, cx);
2278 self.insert("", cx);
2279 self.end_transaction(cx);
2280 }
2281
2282 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
2283 self.start_transaction(cx);
2284 let mut selections = self.local_selections::<Point>(cx);
2285 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2286 for selection in &mut selections {
2287 if selection.is_empty() {
2288 let head = selection.head().to_display_point(&display_map);
2289 let cursor = movement::left(&display_map, head)
2290 .unwrap()
2291 .to_point(&display_map);
2292 selection.set_head(cursor);
2293 selection.goal = SelectionGoal::None;
2294 }
2295 }
2296 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2297 self.insert("", cx);
2298 self.end_transaction(cx);
2299 }
2300
2301 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
2302 self.start_transaction(cx);
2303 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2304 let mut selections = self.local_selections::<Point>(cx);
2305 for selection in &mut selections {
2306 if selection.is_empty() {
2307 let head = selection.head().to_display_point(&display_map);
2308 let cursor = movement::right(&display_map, head)
2309 .unwrap()
2310 .to_point(&display_map);
2311 selection.set_head(cursor);
2312 selection.goal = SelectionGoal::None;
2313 }
2314 }
2315 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2316 self.insert(&"", cx);
2317 self.end_transaction(cx);
2318 }
2319
2320 pub fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
2321 if self.move_to_next_snippet_tabstop(cx) {
2322 return;
2323 }
2324
2325 self.start_transaction(cx);
2326 let tab_size = (self.build_settings)(cx).tab_size;
2327 let mut selections = self.local_selections::<Point>(cx);
2328 let mut last_indent = None;
2329 self.buffer.update(cx, |buffer, cx| {
2330 for selection in &mut selections {
2331 if selection.is_empty() {
2332 let char_column = buffer
2333 .read(cx)
2334 .text_for_range(Point::new(selection.start.row, 0)..selection.start)
2335 .flat_map(str::chars)
2336 .count();
2337 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
2338 buffer.edit(
2339 [selection.start..selection.start],
2340 " ".repeat(chars_to_next_tab_stop),
2341 cx,
2342 );
2343 selection.start.column += chars_to_next_tab_stop as u32;
2344 selection.end = selection.start;
2345 } else {
2346 let mut start_row = selection.start.row;
2347 let mut end_row = selection.end.row + 1;
2348
2349 // If a selection ends at the beginning of a line, don't indent
2350 // that last line.
2351 if selection.end.column == 0 {
2352 end_row -= 1;
2353 }
2354
2355 // Avoid re-indenting a row that has already been indented by a
2356 // previous selection, but still update this selection's column
2357 // to reflect that indentation.
2358 if let Some((last_indent_row, last_indent_len)) = last_indent {
2359 if last_indent_row == selection.start.row {
2360 selection.start.column += last_indent_len;
2361 start_row += 1;
2362 }
2363 if last_indent_row == selection.end.row {
2364 selection.end.column += last_indent_len;
2365 }
2366 }
2367
2368 for row in start_row..end_row {
2369 let indent_column = buffer.read(cx).indent_column_for_line(row) as usize;
2370 let columns_to_next_tab_stop = tab_size - (indent_column % tab_size);
2371 let row_start = Point::new(row, 0);
2372 buffer.edit(
2373 [row_start..row_start],
2374 " ".repeat(columns_to_next_tab_stop),
2375 cx,
2376 );
2377
2378 // Update this selection's endpoints to reflect the indentation.
2379 if row == selection.start.row {
2380 selection.start.column += columns_to_next_tab_stop as u32;
2381 }
2382 if row == selection.end.row {
2383 selection.end.column += columns_to_next_tab_stop as u32;
2384 }
2385
2386 last_indent = Some((row, columns_to_next_tab_stop as u32));
2387 }
2388 }
2389 }
2390 });
2391
2392 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2393 self.end_transaction(cx);
2394 }
2395
2396 pub fn outdent(&mut self, _: &Outdent, cx: &mut ViewContext<Self>) {
2397 if !self.snippet_stack.is_empty() {
2398 self.move_to_prev_snippet_tabstop(cx);
2399 return;
2400 }
2401
2402 self.start_transaction(cx);
2403 let tab_size = (self.build_settings)(cx).tab_size;
2404 let selections = self.local_selections::<Point>(cx);
2405 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2406 let mut deletion_ranges = Vec::new();
2407 let mut last_outdent = None;
2408 {
2409 let buffer = self.buffer.read(cx).read(cx);
2410 for selection in &selections {
2411 let mut rows = selection.spanned_rows(false, &display_map);
2412
2413 // Avoid re-outdenting a row that has already been outdented by a
2414 // previous selection.
2415 if let Some(last_row) = last_outdent {
2416 if last_row == rows.start {
2417 rows.start += 1;
2418 }
2419 }
2420
2421 for row in rows {
2422 let column = buffer.indent_column_for_line(row) as usize;
2423 if column > 0 {
2424 let mut deletion_len = (column % tab_size) as u32;
2425 if deletion_len == 0 {
2426 deletion_len = tab_size as u32;
2427 }
2428 deletion_ranges.push(Point::new(row, 0)..Point::new(row, deletion_len));
2429 last_outdent = Some(row);
2430 }
2431 }
2432 }
2433 }
2434 self.buffer.update(cx, |buffer, cx| {
2435 buffer.edit(deletion_ranges, "", cx);
2436 });
2437
2438 self.update_selections(
2439 self.local_selections::<usize>(cx),
2440 Some(Autoscroll::Fit),
2441 cx,
2442 );
2443 self.end_transaction(cx);
2444 }
2445
2446 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
2447 self.start_transaction(cx);
2448
2449 let selections = self.local_selections::<Point>(cx);
2450 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2451 let buffer = self.buffer.read(cx).snapshot(cx);
2452
2453 let mut new_cursors = Vec::new();
2454 let mut edit_ranges = Vec::new();
2455 let mut selections = selections.iter().peekable();
2456 while let Some(selection) = selections.next() {
2457 let mut rows = selection.spanned_rows(false, &display_map);
2458 let goal_display_column = selection.head().to_display_point(&display_map).column();
2459
2460 // Accumulate contiguous regions of rows that we want to delete.
2461 while let Some(next_selection) = selections.peek() {
2462 let next_rows = next_selection.spanned_rows(false, &display_map);
2463 if next_rows.start <= rows.end {
2464 rows.end = next_rows.end;
2465 selections.next().unwrap();
2466 } else {
2467 break;
2468 }
2469 }
2470
2471 let mut edit_start = Point::new(rows.start, 0).to_offset(&buffer);
2472 let edit_end;
2473 let cursor_buffer_row;
2474 if buffer.max_point().row >= rows.end {
2475 // If there's a line after the range, delete the \n from the end of the row range
2476 // and position the cursor on the next line.
2477 edit_end = Point::new(rows.end, 0).to_offset(&buffer);
2478 cursor_buffer_row = rows.end;
2479 } else {
2480 // If there isn't a line after the range, delete the \n from the line before the
2481 // start of the row range and position the cursor there.
2482 edit_start = edit_start.saturating_sub(1);
2483 edit_end = buffer.len();
2484 cursor_buffer_row = rows.start.saturating_sub(1);
2485 }
2486
2487 let mut cursor = Point::new(cursor_buffer_row, 0).to_display_point(&display_map);
2488 *cursor.column_mut() =
2489 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
2490
2491 new_cursors.push((
2492 selection.id,
2493 buffer.anchor_after(cursor.to_point(&display_map)),
2494 ));
2495 edit_ranges.push(edit_start..edit_end);
2496 }
2497
2498 let buffer = self.buffer.update(cx, |buffer, cx| {
2499 buffer.edit(edit_ranges, "", cx);
2500 buffer.snapshot(cx)
2501 });
2502 let new_selections = new_cursors
2503 .into_iter()
2504 .map(|(id, cursor)| {
2505 let cursor = cursor.to_point(&buffer);
2506 Selection {
2507 id,
2508 start: cursor,
2509 end: cursor,
2510 reversed: false,
2511 goal: SelectionGoal::None,
2512 }
2513 })
2514 .collect();
2515 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2516 self.end_transaction(cx);
2517 }
2518
2519 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
2520 self.start_transaction(cx);
2521
2522 let selections = self.local_selections::<Point>(cx);
2523 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2524 let buffer = &display_map.buffer_snapshot;
2525
2526 let mut edits = Vec::new();
2527 let mut selections_iter = selections.iter().peekable();
2528 while let Some(selection) = selections_iter.next() {
2529 // Avoid duplicating the same lines twice.
2530 let mut rows = selection.spanned_rows(false, &display_map);
2531
2532 while let Some(next_selection) = selections_iter.peek() {
2533 let next_rows = next_selection.spanned_rows(false, &display_map);
2534 if next_rows.start <= rows.end - 1 {
2535 rows.end = next_rows.end;
2536 selections_iter.next().unwrap();
2537 } else {
2538 break;
2539 }
2540 }
2541
2542 // Copy the text from the selected row region and splice it at the start of the region.
2543 let start = Point::new(rows.start, 0);
2544 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
2545 let text = buffer
2546 .text_for_range(start..end)
2547 .chain(Some("\n"))
2548 .collect::<String>();
2549 edits.push((start, text, rows.len() as u32));
2550 }
2551
2552 self.buffer.update(cx, |buffer, cx| {
2553 for (point, text, _) in edits.into_iter().rev() {
2554 buffer.edit(Some(point..point), text, cx);
2555 }
2556 });
2557
2558 self.request_autoscroll(Autoscroll::Fit, cx);
2559 self.end_transaction(cx);
2560 }
2561
2562 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
2563 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2564 let buffer = self.buffer.read(cx).snapshot(cx);
2565
2566 let mut edits = Vec::new();
2567 let mut unfold_ranges = Vec::new();
2568 let mut refold_ranges = Vec::new();
2569
2570 let selections = self.local_selections::<Point>(cx);
2571 let mut selections = selections.iter().peekable();
2572 let mut contiguous_row_selections = Vec::new();
2573 let mut new_selections = Vec::new();
2574
2575 while let Some(selection) = selections.next() {
2576 // Find all the selections that span a contiguous row range
2577 contiguous_row_selections.push(selection.clone());
2578 let start_row = selection.start.row;
2579 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
2580 display_map.next_line_boundary(selection.end).0.row + 1
2581 } else {
2582 selection.end.row
2583 };
2584
2585 while let Some(next_selection) = selections.peek() {
2586 if next_selection.start.row <= end_row {
2587 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
2588 display_map.next_line_boundary(next_selection.end).0.row + 1
2589 } else {
2590 next_selection.end.row
2591 };
2592 contiguous_row_selections.push(selections.next().unwrap().clone());
2593 } else {
2594 break;
2595 }
2596 }
2597
2598 // Move the text spanned by the row range to be before the line preceding the row range
2599 if start_row > 0 {
2600 let range_to_move = Point::new(start_row - 1, buffer.line_len(start_row - 1))
2601 ..Point::new(end_row - 1, buffer.line_len(end_row - 1));
2602 let insertion_point = display_map
2603 .prev_line_boundary(Point::new(start_row - 1, 0))
2604 .0;
2605
2606 // Don't move lines across excerpts
2607 if !buffer.range_contains_excerpt_boundary(insertion_point..range_to_move.end) {
2608 let text = buffer
2609 .text_for_range(range_to_move.clone())
2610 .flat_map(|s| s.chars())
2611 .skip(1)
2612 .chain(['\n'])
2613 .collect::<String>();
2614
2615 edits.push((
2616 buffer.anchor_after(range_to_move.start)
2617 ..buffer.anchor_before(range_to_move.end),
2618 String::new(),
2619 ));
2620 let insertion_anchor = buffer.anchor_after(insertion_point);
2621 edits.push((insertion_anchor.clone()..insertion_anchor, text));
2622
2623 let row_delta = range_to_move.start.row - insertion_point.row + 1;
2624
2625 // Move selections up
2626 new_selections.extend(contiguous_row_selections.drain(..).map(
2627 |mut selection| {
2628 selection.start.row -= row_delta;
2629 selection.end.row -= row_delta;
2630 selection
2631 },
2632 ));
2633
2634 // Move folds up
2635 unfold_ranges.push(range_to_move.clone());
2636 for fold in display_map.folds_in_range(
2637 buffer.anchor_before(range_to_move.start)
2638 ..buffer.anchor_after(range_to_move.end),
2639 ) {
2640 let mut start = fold.start.to_point(&buffer);
2641 let mut end = fold.end.to_point(&buffer);
2642 start.row -= row_delta;
2643 end.row -= row_delta;
2644 refold_ranges.push(start..end);
2645 }
2646 }
2647 }
2648
2649 // If we didn't move line(s), preserve the existing selections
2650 new_selections.extend(contiguous_row_selections.drain(..));
2651 }
2652
2653 self.start_transaction(cx);
2654 self.unfold_ranges(unfold_ranges, cx);
2655 self.buffer.update(cx, |buffer, cx| {
2656 for (range, text) in edits {
2657 buffer.edit([range], text, cx);
2658 }
2659 });
2660 self.fold_ranges(refold_ranges, cx);
2661 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2662 self.end_transaction(cx);
2663 }
2664
2665 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
2666 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2667 let buffer = self.buffer.read(cx).snapshot(cx);
2668
2669 let mut edits = Vec::new();
2670 let mut unfold_ranges = Vec::new();
2671 let mut refold_ranges = Vec::new();
2672
2673 let selections = self.local_selections::<Point>(cx);
2674 let mut selections = selections.iter().peekable();
2675 let mut contiguous_row_selections = Vec::new();
2676 let mut new_selections = Vec::new();
2677
2678 while let Some(selection) = selections.next() {
2679 // Find all the selections that span a contiguous row range
2680 contiguous_row_selections.push(selection.clone());
2681 let start_row = selection.start.row;
2682 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
2683 display_map.next_line_boundary(selection.end).0.row + 1
2684 } else {
2685 selection.end.row
2686 };
2687
2688 while let Some(next_selection) = selections.peek() {
2689 if next_selection.start.row <= end_row {
2690 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
2691 display_map.next_line_boundary(next_selection.end).0.row + 1
2692 } else {
2693 next_selection.end.row
2694 };
2695 contiguous_row_selections.push(selections.next().unwrap().clone());
2696 } else {
2697 break;
2698 }
2699 }
2700
2701 // Move the text spanned by the row range to be after the last line of the row range
2702 if end_row <= buffer.max_point().row {
2703 let range_to_move = Point::new(start_row, 0)..Point::new(end_row, 0);
2704 let insertion_point = display_map.next_line_boundary(Point::new(end_row, 0)).0;
2705
2706 // Don't move lines across excerpt boundaries
2707 if !buffer.range_contains_excerpt_boundary(range_to_move.start..insertion_point) {
2708 let mut text = String::from("\n");
2709 text.extend(buffer.text_for_range(range_to_move.clone()));
2710 text.pop(); // Drop trailing newline
2711 edits.push((
2712 buffer.anchor_after(range_to_move.start)
2713 ..buffer.anchor_before(range_to_move.end),
2714 String::new(),
2715 ));
2716 let insertion_anchor = buffer.anchor_after(insertion_point);
2717 edits.push((insertion_anchor.clone()..insertion_anchor, text));
2718
2719 let row_delta = insertion_point.row - range_to_move.end.row + 1;
2720
2721 // Move selections down
2722 new_selections.extend(contiguous_row_selections.drain(..).map(
2723 |mut selection| {
2724 selection.start.row += row_delta;
2725 selection.end.row += row_delta;
2726 selection
2727 },
2728 ));
2729
2730 // Move folds down
2731 unfold_ranges.push(range_to_move.clone());
2732 for fold in display_map.folds_in_range(
2733 buffer.anchor_before(range_to_move.start)
2734 ..buffer.anchor_after(range_to_move.end),
2735 ) {
2736 let mut start = fold.start.to_point(&buffer);
2737 let mut end = fold.end.to_point(&buffer);
2738 start.row += row_delta;
2739 end.row += row_delta;
2740 refold_ranges.push(start..end);
2741 }
2742 }
2743 }
2744
2745 // If we didn't move line(s), preserve the existing selections
2746 new_selections.extend(contiguous_row_selections.drain(..));
2747 }
2748
2749 self.start_transaction(cx);
2750 self.unfold_ranges(unfold_ranges, cx);
2751 self.buffer.update(cx, |buffer, cx| {
2752 for (range, text) in edits {
2753 buffer.edit([range], text, cx);
2754 }
2755 });
2756 self.fold_ranges(refold_ranges, cx);
2757 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2758 self.end_transaction(cx);
2759 }
2760
2761 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
2762 self.start_transaction(cx);
2763 let mut text = String::new();
2764 let mut selections = self.local_selections::<Point>(cx);
2765 let mut clipboard_selections = Vec::with_capacity(selections.len());
2766 {
2767 let buffer = self.buffer.read(cx).read(cx);
2768 let max_point = buffer.max_point();
2769 for selection in &mut selections {
2770 let is_entire_line = selection.is_empty();
2771 if is_entire_line {
2772 selection.start = Point::new(selection.start.row, 0);
2773 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
2774 selection.goal = SelectionGoal::None;
2775 }
2776 let mut len = 0;
2777 for chunk in buffer.text_for_range(selection.start..selection.end) {
2778 text.push_str(chunk);
2779 len += chunk.len();
2780 }
2781 clipboard_selections.push(ClipboardSelection {
2782 len,
2783 is_entire_line,
2784 });
2785 }
2786 }
2787 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2788 self.insert("", cx);
2789 self.end_transaction(cx);
2790
2791 cx.as_mut()
2792 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
2793 }
2794
2795 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
2796 let selections = self.local_selections::<Point>(cx);
2797 let mut text = String::new();
2798 let mut clipboard_selections = Vec::with_capacity(selections.len());
2799 {
2800 let buffer = self.buffer.read(cx).read(cx);
2801 let max_point = buffer.max_point();
2802 for selection in selections.iter() {
2803 let mut start = selection.start;
2804 let mut end = selection.end;
2805 let is_entire_line = selection.is_empty();
2806 if is_entire_line {
2807 start = Point::new(start.row, 0);
2808 end = cmp::min(max_point, Point::new(start.row + 1, 0));
2809 }
2810 let mut len = 0;
2811 for chunk in buffer.text_for_range(start..end) {
2812 text.push_str(chunk);
2813 len += chunk.len();
2814 }
2815 clipboard_selections.push(ClipboardSelection {
2816 len,
2817 is_entire_line,
2818 });
2819 }
2820 }
2821
2822 cx.as_mut()
2823 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
2824 }
2825
2826 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
2827 if let Some(item) = cx.as_mut().read_from_clipboard() {
2828 let clipboard_text = item.text();
2829 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
2830 let mut selections = self.local_selections::<usize>(cx);
2831 let all_selections_were_entire_line =
2832 clipboard_selections.iter().all(|s| s.is_entire_line);
2833 if clipboard_selections.len() != selections.len() {
2834 clipboard_selections.clear();
2835 }
2836
2837 let mut delta = 0_isize;
2838 let mut start_offset = 0;
2839 for (i, selection) in selections.iter_mut().enumerate() {
2840 let to_insert;
2841 let entire_line;
2842 if let Some(clipboard_selection) = clipboard_selections.get(i) {
2843 let end_offset = start_offset + clipboard_selection.len;
2844 to_insert = &clipboard_text[start_offset..end_offset];
2845 entire_line = clipboard_selection.is_entire_line;
2846 start_offset = end_offset
2847 } else {
2848 to_insert = clipboard_text.as_str();
2849 entire_line = all_selections_were_entire_line;
2850 }
2851
2852 selection.start = (selection.start as isize + delta) as usize;
2853 selection.end = (selection.end as isize + delta) as usize;
2854
2855 self.buffer.update(cx, |buffer, cx| {
2856 // If the corresponding selection was empty when this slice of the
2857 // clipboard text was written, then the entire line containing the
2858 // selection was copied. If this selection is also currently empty,
2859 // then paste the line before the current line of the buffer.
2860 let range = if selection.is_empty() && entire_line {
2861 let column = selection.start.to_point(&buffer.read(cx)).column as usize;
2862 let line_start = selection.start - column;
2863 line_start..line_start
2864 } else {
2865 selection.start..selection.end
2866 };
2867
2868 delta += to_insert.len() as isize - range.len() as isize;
2869 buffer.edit([range], to_insert, cx);
2870 selection.start += to_insert.len();
2871 selection.end = selection.start;
2872 });
2873 }
2874 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2875 } else {
2876 self.insert(clipboard_text, cx);
2877 }
2878 }
2879 }
2880
2881 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
2882 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
2883 if let Some((selections, _)) = self.selection_history.get(&tx_id).cloned() {
2884 self.set_selections(selections, cx);
2885 }
2886 self.request_autoscroll(Autoscroll::Fit, cx);
2887 }
2888 }
2889
2890 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
2891 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
2892 if let Some((_, Some(selections))) = self.selection_history.get(&tx_id).cloned() {
2893 self.set_selections(selections, cx);
2894 }
2895 self.request_autoscroll(Autoscroll::Fit, cx);
2896 }
2897 }
2898
2899 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
2900 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2901 let mut selections = self.local_selections::<Point>(cx);
2902 for selection in &mut selections {
2903 let start = selection.start.to_display_point(&display_map);
2904 let end = selection.end.to_display_point(&display_map);
2905
2906 if start != end {
2907 selection.end = selection.start.clone();
2908 } else {
2909 let cursor = movement::left(&display_map, start)
2910 .unwrap()
2911 .to_point(&display_map);
2912 selection.start = cursor.clone();
2913 selection.end = cursor;
2914 }
2915 selection.reversed = false;
2916 selection.goal = SelectionGoal::None;
2917 }
2918 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2919 }
2920
2921 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
2922 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2923 let mut selections = self.local_selections::<Point>(cx);
2924 for selection in &mut selections {
2925 let head = selection.head().to_display_point(&display_map);
2926 let cursor = movement::left(&display_map, head)
2927 .unwrap()
2928 .to_point(&display_map);
2929 selection.set_head(cursor);
2930 selection.goal = SelectionGoal::None;
2931 }
2932 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2933 }
2934
2935 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
2936 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2937 let mut selections = self.local_selections::<Point>(cx);
2938 for selection in &mut selections {
2939 let start = selection.start.to_display_point(&display_map);
2940 let end = selection.end.to_display_point(&display_map);
2941
2942 if start != end {
2943 selection.start = selection.end.clone();
2944 } else {
2945 let cursor = movement::right(&display_map, end)
2946 .unwrap()
2947 .to_point(&display_map);
2948 selection.start = cursor;
2949 selection.end = cursor;
2950 }
2951 selection.reversed = false;
2952 selection.goal = SelectionGoal::None;
2953 }
2954 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2955 }
2956
2957 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
2958 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2959 let mut selections = self.local_selections::<Point>(cx);
2960 for selection in &mut selections {
2961 let head = selection.head().to_display_point(&display_map);
2962 let cursor = movement::right(&display_map, head)
2963 .unwrap()
2964 .to_point(&display_map);
2965 selection.set_head(cursor);
2966 selection.goal = SelectionGoal::None;
2967 }
2968 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2969 }
2970
2971 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
2972 if let Some(context_menu) = self.context_menu.as_mut() {
2973 if context_menu.select_prev(cx) {
2974 return;
2975 }
2976 }
2977
2978 if matches!(self.mode, EditorMode::SingleLine) {
2979 cx.propagate_action();
2980 return;
2981 }
2982
2983 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2984 let mut selections = self.local_selections::<Point>(cx);
2985 for selection in &mut selections {
2986 let start = selection.start.to_display_point(&display_map);
2987 let end = selection.end.to_display_point(&display_map);
2988 if start != end {
2989 selection.goal = SelectionGoal::None;
2990 }
2991
2992 let (start, goal) = movement::up(&display_map, start, selection.goal).unwrap();
2993 let cursor = start.to_point(&display_map);
2994 selection.start = cursor;
2995 selection.end = cursor;
2996 selection.goal = goal;
2997 selection.reversed = false;
2998 }
2999 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3000 }
3001
3002 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
3003 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3004 let mut selections = self.local_selections::<Point>(cx);
3005 for selection in &mut selections {
3006 let head = selection.head().to_display_point(&display_map);
3007 let (head, goal) = movement::up(&display_map, head, selection.goal).unwrap();
3008 let cursor = head.to_point(&display_map);
3009 selection.set_head(cursor);
3010 selection.goal = goal;
3011 }
3012 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3013 }
3014
3015 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
3016 if let Some(context_menu) = self.context_menu.as_mut() {
3017 if context_menu.select_next(cx) {
3018 return;
3019 }
3020 }
3021
3022 if matches!(self.mode, EditorMode::SingleLine) {
3023 cx.propagate_action();
3024 return;
3025 }
3026
3027 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3028 let mut selections = self.local_selections::<Point>(cx);
3029 for selection in &mut selections {
3030 let start = selection.start.to_display_point(&display_map);
3031 let end = selection.end.to_display_point(&display_map);
3032 if start != end {
3033 selection.goal = SelectionGoal::None;
3034 }
3035
3036 let (start, goal) = movement::down(&display_map, end, selection.goal).unwrap();
3037 let cursor = start.to_point(&display_map);
3038 selection.start = cursor;
3039 selection.end = cursor;
3040 selection.goal = goal;
3041 selection.reversed = false;
3042 }
3043 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3044 }
3045
3046 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
3047 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3048 let mut selections = self.local_selections::<Point>(cx);
3049 for selection in &mut selections {
3050 let head = selection.head().to_display_point(&display_map);
3051 let (head, goal) = movement::down(&display_map, head, selection.goal).unwrap();
3052 let cursor = head.to_point(&display_map);
3053 selection.set_head(cursor);
3054 selection.goal = goal;
3055 }
3056 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3057 }
3058
3059 pub fn move_to_previous_word_boundary(
3060 &mut self,
3061 _: &MoveToPreviousWordBoundary,
3062 cx: &mut ViewContext<Self>,
3063 ) {
3064 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3065 let mut selections = self.local_selections::<Point>(cx);
3066 for selection in &mut selections {
3067 let head = selection.head().to_display_point(&display_map);
3068 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3069 selection.start = cursor.clone();
3070 selection.end = cursor;
3071 selection.reversed = false;
3072 selection.goal = SelectionGoal::None;
3073 }
3074 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3075 }
3076
3077 pub fn select_to_previous_word_boundary(
3078 &mut self,
3079 _: &SelectToPreviousWordBoundary,
3080 cx: &mut ViewContext<Self>,
3081 ) {
3082 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3083 let mut selections = self.local_selections::<Point>(cx);
3084 for selection in &mut selections {
3085 let head = selection.head().to_display_point(&display_map);
3086 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3087 selection.set_head(cursor);
3088 selection.goal = SelectionGoal::None;
3089 }
3090 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3091 }
3092
3093 pub fn delete_to_previous_word_boundary(
3094 &mut self,
3095 _: &DeleteToPreviousWordBoundary,
3096 cx: &mut ViewContext<Self>,
3097 ) {
3098 self.start_transaction(cx);
3099 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3100 let mut selections = self.local_selections::<Point>(cx);
3101 for selection in &mut selections {
3102 if selection.is_empty() {
3103 let head = selection.head().to_display_point(&display_map);
3104 let cursor =
3105 movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3106 selection.set_head(cursor);
3107 selection.goal = SelectionGoal::None;
3108 }
3109 }
3110 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3111 self.insert("", cx);
3112 self.end_transaction(cx);
3113 }
3114
3115 pub fn move_to_next_word_boundary(
3116 &mut self,
3117 _: &MoveToNextWordBoundary,
3118 cx: &mut ViewContext<Self>,
3119 ) {
3120 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3121 let mut selections = self.local_selections::<Point>(cx);
3122 for selection in &mut selections {
3123 let head = selection.head().to_display_point(&display_map);
3124 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
3125 selection.start = cursor;
3126 selection.end = cursor;
3127 selection.reversed = false;
3128 selection.goal = SelectionGoal::None;
3129 }
3130 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3131 }
3132
3133 pub fn select_to_next_word_boundary(
3134 &mut self,
3135 _: &SelectToNextWordBoundary,
3136 cx: &mut ViewContext<Self>,
3137 ) {
3138 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3139 let mut selections = self.local_selections::<Point>(cx);
3140 for selection in &mut selections {
3141 let head = selection.head().to_display_point(&display_map);
3142 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
3143 selection.set_head(cursor);
3144 selection.goal = SelectionGoal::None;
3145 }
3146 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3147 }
3148
3149 pub fn delete_to_next_word_boundary(
3150 &mut self,
3151 _: &DeleteToNextWordBoundary,
3152 cx: &mut ViewContext<Self>,
3153 ) {
3154 self.start_transaction(cx);
3155 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3156 let mut selections = self.local_selections::<Point>(cx);
3157 for selection in &mut selections {
3158 if selection.is_empty() {
3159 let head = selection.head().to_display_point(&display_map);
3160 let cursor =
3161 movement::next_word_boundary(&display_map, head).to_point(&display_map);
3162 selection.set_head(cursor);
3163 selection.goal = SelectionGoal::None;
3164 }
3165 }
3166 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3167 self.insert("", cx);
3168 self.end_transaction(cx);
3169 }
3170
3171 pub fn move_to_beginning_of_line(
3172 &mut self,
3173 _: &MoveToBeginningOfLine,
3174 cx: &mut ViewContext<Self>,
3175 ) {
3176 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3177 let mut selections = self.local_selections::<Point>(cx);
3178 for selection in &mut selections {
3179 let head = selection.head().to_display_point(&display_map);
3180 let new_head = movement::line_beginning(&display_map, head, true);
3181 let cursor = new_head.to_point(&display_map);
3182 selection.start = cursor;
3183 selection.end = cursor;
3184 selection.reversed = false;
3185 selection.goal = SelectionGoal::None;
3186 }
3187 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3188 }
3189
3190 pub fn select_to_beginning_of_line(
3191 &mut self,
3192 SelectToBeginningOfLine(stop_at_soft_boundaries): &SelectToBeginningOfLine,
3193 cx: &mut ViewContext<Self>,
3194 ) {
3195 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3196 let mut selections = self.local_selections::<Point>(cx);
3197 for selection in &mut selections {
3198 let head = selection.head().to_display_point(&display_map);
3199 let new_head = movement::line_beginning(&display_map, head, *stop_at_soft_boundaries);
3200 selection.set_head(new_head.to_point(&display_map));
3201 selection.goal = SelectionGoal::None;
3202 }
3203 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3204 }
3205
3206 pub fn delete_to_beginning_of_line(
3207 &mut self,
3208 _: &DeleteToBeginningOfLine,
3209 cx: &mut ViewContext<Self>,
3210 ) {
3211 self.start_transaction(cx);
3212 self.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
3213 self.backspace(&Backspace, cx);
3214 self.end_transaction(cx);
3215 }
3216
3217 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
3218 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3219 let mut selections = self.local_selections::<Point>(cx);
3220 {
3221 for selection in &mut selections {
3222 let head = selection.head().to_display_point(&display_map);
3223 let new_head = movement::line_end(&display_map, head, true);
3224 let anchor = new_head.to_point(&display_map);
3225 selection.start = anchor.clone();
3226 selection.end = anchor;
3227 selection.reversed = false;
3228 selection.goal = SelectionGoal::None;
3229 }
3230 }
3231 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3232 }
3233
3234 pub fn select_to_end_of_line(
3235 &mut self,
3236 SelectToEndOfLine(stop_at_soft_boundaries): &SelectToEndOfLine,
3237 cx: &mut ViewContext<Self>,
3238 ) {
3239 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3240 let mut selections = self.local_selections::<Point>(cx);
3241 for selection in &mut selections {
3242 let head = selection.head().to_display_point(&display_map);
3243 let new_head = movement::line_end(&display_map, head, *stop_at_soft_boundaries);
3244 selection.set_head(new_head.to_point(&display_map));
3245 selection.goal = SelectionGoal::None;
3246 }
3247 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3248 }
3249
3250 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
3251 self.start_transaction(cx);
3252 self.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3253 self.delete(&Delete, cx);
3254 self.end_transaction(cx);
3255 }
3256
3257 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
3258 self.start_transaction(cx);
3259 self.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3260 self.cut(&Cut, cx);
3261 self.end_transaction(cx);
3262 }
3263
3264 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
3265 if matches!(self.mode, EditorMode::SingleLine) {
3266 cx.propagate_action();
3267 return;
3268 }
3269
3270 let selection = Selection {
3271 id: post_inc(&mut self.next_selection_id),
3272 start: 0,
3273 end: 0,
3274 reversed: false,
3275 goal: SelectionGoal::None,
3276 };
3277 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3278 }
3279
3280 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
3281 let mut selection = self.local_selections::<Point>(cx).last().unwrap().clone();
3282 selection.set_head(Point::zero());
3283 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3284 }
3285
3286 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
3287 if matches!(self.mode, EditorMode::SingleLine) {
3288 cx.propagate_action();
3289 return;
3290 }
3291
3292 let cursor = self.buffer.read(cx).read(cx).len();
3293 let selection = Selection {
3294 id: post_inc(&mut self.next_selection_id),
3295 start: cursor,
3296 end: cursor,
3297 reversed: false,
3298 goal: SelectionGoal::None,
3299 };
3300 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3301 }
3302
3303 pub fn set_nav_history(&mut self, nav_history: Option<ItemNavHistory>) {
3304 self.nav_history = nav_history;
3305 }
3306
3307 pub fn nav_history(&self) -> Option<&ItemNavHistory> {
3308 self.nav_history.as_ref()
3309 }
3310
3311 fn push_to_nav_history(
3312 &self,
3313 position: Anchor,
3314 new_position: Option<Point>,
3315 cx: &mut ViewContext<Self>,
3316 ) {
3317 if let Some(nav_history) = &self.nav_history {
3318 let buffer = self.buffer.read(cx).read(cx);
3319 let offset = position.to_offset(&buffer);
3320 let point = position.to_point(&buffer);
3321 drop(buffer);
3322
3323 if let Some(new_position) = new_position {
3324 let row_delta = (new_position.row as i64 - point.row as i64).abs();
3325 if row_delta < MIN_NAVIGATION_HISTORY_ROW_DELTA {
3326 return;
3327 }
3328 }
3329
3330 nav_history.push(Some(NavigationData {
3331 anchor: position,
3332 offset,
3333 }));
3334 }
3335 }
3336
3337 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
3338 let mut selection = self.local_selections::<usize>(cx).first().unwrap().clone();
3339 selection.set_head(self.buffer.read(cx).read(cx).len());
3340 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3341 }
3342
3343 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
3344 let selection = Selection {
3345 id: post_inc(&mut self.next_selection_id),
3346 start: 0,
3347 end: self.buffer.read(cx).read(cx).len(),
3348 reversed: false,
3349 goal: SelectionGoal::None,
3350 };
3351 self.update_selections(vec![selection], None, cx);
3352 }
3353
3354 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
3355 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3356 let mut selections = self.local_selections::<Point>(cx);
3357 let max_point = display_map.buffer_snapshot.max_point();
3358 for selection in &mut selections {
3359 let rows = selection.spanned_rows(true, &display_map);
3360 selection.start = Point::new(rows.start, 0);
3361 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
3362 selection.reversed = false;
3363 }
3364 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3365 }
3366
3367 pub fn split_selection_into_lines(
3368 &mut self,
3369 _: &SplitSelectionIntoLines,
3370 cx: &mut ViewContext<Self>,
3371 ) {
3372 let mut to_unfold = Vec::new();
3373 let mut new_selections = Vec::new();
3374 {
3375 let selections = self.local_selections::<Point>(cx);
3376 let buffer = self.buffer.read(cx).read(cx);
3377 for selection in selections {
3378 for row in selection.start.row..selection.end.row {
3379 let cursor = Point::new(row, buffer.line_len(row));
3380 new_selections.push(Selection {
3381 id: post_inc(&mut self.next_selection_id),
3382 start: cursor,
3383 end: cursor,
3384 reversed: false,
3385 goal: SelectionGoal::None,
3386 });
3387 }
3388 new_selections.push(Selection {
3389 id: selection.id,
3390 start: selection.end,
3391 end: selection.end,
3392 reversed: false,
3393 goal: SelectionGoal::None,
3394 });
3395 to_unfold.push(selection.start..selection.end);
3396 }
3397 }
3398 self.unfold_ranges(to_unfold, cx);
3399 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3400 }
3401
3402 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
3403 self.add_selection(true, cx);
3404 }
3405
3406 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
3407 self.add_selection(false, cx);
3408 }
3409
3410 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
3411 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3412 let mut selections = self.local_selections::<Point>(cx);
3413 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
3414 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
3415 let range = oldest_selection.display_range(&display_map).sorted();
3416 let columns = cmp::min(range.start.column(), range.end.column())
3417 ..cmp::max(range.start.column(), range.end.column());
3418
3419 selections.clear();
3420 let mut stack = Vec::new();
3421 for row in range.start.row()..=range.end.row() {
3422 if let Some(selection) = self.build_columnar_selection(
3423 &display_map,
3424 row,
3425 &columns,
3426 oldest_selection.reversed,
3427 ) {
3428 stack.push(selection.id);
3429 selections.push(selection);
3430 }
3431 }
3432
3433 if above {
3434 stack.reverse();
3435 }
3436
3437 AddSelectionsState { above, stack }
3438 });
3439
3440 let last_added_selection = *state.stack.last().unwrap();
3441 let mut new_selections = Vec::new();
3442 if above == state.above {
3443 let end_row = if above {
3444 0
3445 } else {
3446 display_map.max_point().row()
3447 };
3448
3449 'outer: for selection in selections {
3450 if selection.id == last_added_selection {
3451 let range = selection.display_range(&display_map).sorted();
3452 debug_assert_eq!(range.start.row(), range.end.row());
3453 let mut row = range.start.row();
3454 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
3455 {
3456 start..end
3457 } else {
3458 cmp::min(range.start.column(), range.end.column())
3459 ..cmp::max(range.start.column(), range.end.column())
3460 };
3461
3462 while row != end_row {
3463 if above {
3464 row -= 1;
3465 } else {
3466 row += 1;
3467 }
3468
3469 if let Some(new_selection) = self.build_columnar_selection(
3470 &display_map,
3471 row,
3472 &columns,
3473 selection.reversed,
3474 ) {
3475 state.stack.push(new_selection.id);
3476 if above {
3477 new_selections.push(new_selection);
3478 new_selections.push(selection);
3479 } else {
3480 new_selections.push(selection);
3481 new_selections.push(new_selection);
3482 }
3483
3484 continue 'outer;
3485 }
3486 }
3487 }
3488
3489 new_selections.push(selection);
3490 }
3491 } else {
3492 new_selections = selections;
3493 new_selections.retain(|s| s.id != last_added_selection);
3494 state.stack.pop();
3495 }
3496
3497 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3498 if state.stack.len() > 1 {
3499 self.add_selections_state = Some(state);
3500 }
3501 }
3502
3503 pub fn select_next(&mut self, action: &SelectNext, cx: &mut ViewContext<Self>) {
3504 let replace_newest = action.0;
3505 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3506 let buffer = &display_map.buffer_snapshot;
3507 let mut selections = self.local_selections::<usize>(cx);
3508 if let Some(mut select_next_state) = self.select_next_state.take() {
3509 let query = &select_next_state.query;
3510 if !select_next_state.done {
3511 let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
3512 let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
3513 let mut next_selected_range = None;
3514
3515 let bytes_after_last_selection =
3516 buffer.bytes_in_range(last_selection.end..buffer.len());
3517 let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
3518 let query_matches = query
3519 .stream_find_iter(bytes_after_last_selection)
3520 .map(|result| (last_selection.end, result))
3521 .chain(
3522 query
3523 .stream_find_iter(bytes_before_first_selection)
3524 .map(|result| (0, result)),
3525 );
3526 for (start_offset, query_match) in query_matches {
3527 let query_match = query_match.unwrap(); // can only fail due to I/O
3528 let offset_range =
3529 start_offset + query_match.start()..start_offset + query_match.end();
3530 let display_range = offset_range.start.to_display_point(&display_map)
3531 ..offset_range.end.to_display_point(&display_map);
3532
3533 if !select_next_state.wordwise
3534 || (!movement::is_inside_word(&display_map, display_range.start)
3535 && !movement::is_inside_word(&display_map, display_range.end))
3536 {
3537 next_selected_range = Some(offset_range);
3538 break;
3539 }
3540 }
3541
3542 if let Some(next_selected_range) = next_selected_range {
3543 if replace_newest {
3544 if let Some(newest_id) =
3545 selections.iter().max_by_key(|s| s.id).map(|s| s.id)
3546 {
3547 selections.retain(|s| s.id != newest_id);
3548 }
3549 }
3550 selections.push(Selection {
3551 id: post_inc(&mut self.next_selection_id),
3552 start: next_selected_range.start,
3553 end: next_selected_range.end,
3554 reversed: false,
3555 goal: SelectionGoal::None,
3556 });
3557 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3558 } else {
3559 select_next_state.done = true;
3560 }
3561 }
3562
3563 self.select_next_state = Some(select_next_state);
3564 } else if selections.len() == 1 {
3565 let selection = selections.last_mut().unwrap();
3566 if selection.start == selection.end {
3567 let word_range = movement::surrounding_word(
3568 &display_map,
3569 selection.start.to_display_point(&display_map),
3570 );
3571 selection.start = word_range.start.to_offset(&display_map, Bias::Left);
3572 selection.end = word_range.end.to_offset(&display_map, Bias::Left);
3573 selection.goal = SelectionGoal::None;
3574 selection.reversed = false;
3575
3576 let query = buffer
3577 .text_for_range(selection.start..selection.end)
3578 .collect::<String>();
3579 let select_state = SelectNextState {
3580 query: AhoCorasick::new_auto_configured(&[query]),
3581 wordwise: true,
3582 done: false,
3583 };
3584 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3585 self.select_next_state = Some(select_state);
3586 } else {
3587 let query = buffer
3588 .text_for_range(selection.start..selection.end)
3589 .collect::<String>();
3590 self.select_next_state = Some(SelectNextState {
3591 query: AhoCorasick::new_auto_configured(&[query]),
3592 wordwise: false,
3593 done: false,
3594 });
3595 self.select_next(action, cx);
3596 }
3597 }
3598 }
3599
3600 pub fn toggle_comments(&mut self, _: &ToggleComments, cx: &mut ViewContext<Self>) {
3601 // Get the line comment prefix. Split its trailing whitespace into a separate string,
3602 // as that portion won't be used for detecting if a line is a comment.
3603 let full_comment_prefix =
3604 if let Some(prefix) = self.language(cx).and_then(|l| l.line_comment_prefix()) {
3605 prefix.to_string()
3606 } else {
3607 return;
3608 };
3609 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
3610 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
3611
3612 self.start_transaction(cx);
3613 let mut selections = self.local_selections::<Point>(cx);
3614 let mut all_selection_lines_are_comments = true;
3615 let mut edit_ranges = Vec::new();
3616 let mut last_toggled_row = None;
3617 self.buffer.update(cx, |buffer, cx| {
3618 for selection in &mut selections {
3619 edit_ranges.clear();
3620 let snapshot = buffer.snapshot(cx);
3621
3622 let end_row =
3623 if selection.end.row > selection.start.row && selection.end.column == 0 {
3624 selection.end.row
3625 } else {
3626 selection.end.row + 1
3627 };
3628
3629 for row in selection.start.row..end_row {
3630 // If multiple selections contain a given row, avoid processing that
3631 // row more than once.
3632 if last_toggled_row == Some(row) {
3633 continue;
3634 } else {
3635 last_toggled_row = Some(row);
3636 }
3637
3638 if snapshot.is_line_blank(row) {
3639 continue;
3640 }
3641
3642 let start = Point::new(row, snapshot.indent_column_for_line(row));
3643 let mut line_bytes = snapshot
3644 .bytes_in_range(start..snapshot.max_point())
3645 .flatten()
3646 .copied();
3647
3648 // If this line currently begins with the line comment prefix, then record
3649 // the range containing the prefix.
3650 if all_selection_lines_are_comments
3651 && line_bytes
3652 .by_ref()
3653 .take(comment_prefix.len())
3654 .eq(comment_prefix.bytes())
3655 {
3656 // Include any whitespace that matches the comment prefix.
3657 let matching_whitespace_len = line_bytes
3658 .zip(comment_prefix_whitespace.bytes())
3659 .take_while(|(a, b)| a == b)
3660 .count() as u32;
3661 let end = Point::new(
3662 row,
3663 start.column + comment_prefix.len() as u32 + matching_whitespace_len,
3664 );
3665 edit_ranges.push(start..end);
3666 }
3667 // If this line does not begin with the line comment prefix, then record
3668 // the position where the prefix should be inserted.
3669 else {
3670 all_selection_lines_are_comments = false;
3671 edit_ranges.push(start..start);
3672 }
3673 }
3674
3675 if !edit_ranges.is_empty() {
3676 if all_selection_lines_are_comments {
3677 buffer.edit(edit_ranges.iter().cloned(), "", cx);
3678 } else {
3679 let min_column = edit_ranges.iter().map(|r| r.start.column).min().unwrap();
3680 let edit_ranges = edit_ranges.iter().map(|range| {
3681 let position = Point::new(range.start.row, min_column);
3682 position..position
3683 });
3684 buffer.edit(edit_ranges, &full_comment_prefix, cx);
3685 }
3686 }
3687 }
3688 });
3689
3690 self.update_selections(
3691 self.local_selections::<usize>(cx),
3692 Some(Autoscroll::Fit),
3693 cx,
3694 );
3695 self.end_transaction(cx);
3696 }
3697
3698 pub fn select_larger_syntax_node(
3699 &mut self,
3700 _: &SelectLargerSyntaxNode,
3701 cx: &mut ViewContext<Self>,
3702 ) {
3703 let old_selections = self.local_selections::<usize>(cx).into_boxed_slice();
3704 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3705 let buffer = self.buffer.read(cx).snapshot(cx);
3706
3707 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
3708 let mut selected_larger_node = false;
3709 let new_selections = old_selections
3710 .iter()
3711 .map(|selection| {
3712 let old_range = selection.start..selection.end;
3713 let mut new_range = old_range.clone();
3714 while let Some(containing_range) =
3715 buffer.range_for_syntax_ancestor(new_range.clone())
3716 {
3717 new_range = containing_range;
3718 if !display_map.intersects_fold(new_range.start)
3719 && !display_map.intersects_fold(new_range.end)
3720 {
3721 break;
3722 }
3723 }
3724
3725 selected_larger_node |= new_range != old_range;
3726 Selection {
3727 id: selection.id,
3728 start: new_range.start,
3729 end: new_range.end,
3730 goal: SelectionGoal::None,
3731 reversed: selection.reversed,
3732 }
3733 })
3734 .collect::<Vec<_>>();
3735
3736 if selected_larger_node {
3737 stack.push(old_selections);
3738 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3739 }
3740 self.select_larger_syntax_node_stack = stack;
3741 }
3742
3743 pub fn select_smaller_syntax_node(
3744 &mut self,
3745 _: &SelectSmallerSyntaxNode,
3746 cx: &mut ViewContext<Self>,
3747 ) {
3748 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
3749 if let Some(selections) = stack.pop() {
3750 self.update_selections(selections.to_vec(), Some(Autoscroll::Fit), cx);
3751 }
3752 self.select_larger_syntax_node_stack = stack;
3753 }
3754
3755 pub fn move_to_enclosing_bracket(
3756 &mut self,
3757 _: &MoveToEnclosingBracket,
3758 cx: &mut ViewContext<Self>,
3759 ) {
3760 let mut selections = self.local_selections::<usize>(cx);
3761 let buffer = self.buffer.read(cx).snapshot(cx);
3762 for selection in &mut selections {
3763 if let Some((open_range, close_range)) =
3764 buffer.enclosing_bracket_ranges(selection.start..selection.end)
3765 {
3766 let close_range = close_range.to_inclusive();
3767 let destination = if close_range.contains(&selection.start)
3768 && close_range.contains(&selection.end)
3769 {
3770 open_range.end
3771 } else {
3772 *close_range.start()
3773 };
3774 selection.start = destination;
3775 selection.end = destination;
3776 }
3777 }
3778
3779 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3780 }
3781
3782 pub fn show_next_diagnostic(&mut self, _: &ShowNextDiagnostic, cx: &mut ViewContext<Self>) {
3783 let buffer = self.buffer.read(cx).snapshot(cx);
3784 let selection = self.newest_selection::<usize>(&buffer);
3785 let mut active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
3786 active_diagnostics
3787 .primary_range
3788 .to_offset(&buffer)
3789 .to_inclusive()
3790 });
3791 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
3792 if active_primary_range.contains(&selection.head()) {
3793 *active_primary_range.end()
3794 } else {
3795 selection.head()
3796 }
3797 } else {
3798 selection.head()
3799 };
3800
3801 loop {
3802 let next_group = buffer
3803 .diagnostics_in_range::<_, usize>(search_start..buffer.len())
3804 .find_map(|entry| {
3805 if entry.diagnostic.is_primary
3806 && !entry.range.is_empty()
3807 && Some(entry.range.end) != active_primary_range.as_ref().map(|r| *r.end())
3808 {
3809 Some((entry.range, entry.diagnostic.group_id))
3810 } else {
3811 None
3812 }
3813 });
3814
3815 if let Some((primary_range, group_id)) = next_group {
3816 self.activate_diagnostics(group_id, cx);
3817 self.update_selections(
3818 vec![Selection {
3819 id: selection.id,
3820 start: primary_range.start,
3821 end: primary_range.start,
3822 reversed: false,
3823 goal: SelectionGoal::None,
3824 }],
3825 Some(Autoscroll::Center),
3826 cx,
3827 );
3828 break;
3829 } else if search_start == 0 {
3830 break;
3831 } else {
3832 // Cycle around to the start of the buffer, potentially moving back to the start of
3833 // the currently active diagnostic.
3834 search_start = 0;
3835 active_primary_range.take();
3836 }
3837 }
3838 }
3839
3840 pub fn go_to_definition(
3841 workspace: &mut Workspace,
3842 _: &GoToDefinition,
3843 cx: &mut ViewContext<Workspace>,
3844 ) {
3845 let active_item = workspace.active_item(cx);
3846 let editor_handle = if let Some(editor) = active_item
3847 .as_ref()
3848 .and_then(|item| item.act_as::<Self>(cx))
3849 {
3850 editor
3851 } else {
3852 return;
3853 };
3854
3855 let editor = editor_handle.read(cx);
3856 let buffer = editor.buffer.read(cx);
3857 let head = editor.newest_selection::<usize>(&buffer.read(cx)).head();
3858 let (buffer, head) = editor.buffer.read(cx).text_anchor_for_position(head, cx);
3859 let definitions = workspace
3860 .project()
3861 .update(cx, |project, cx| project.definition(&buffer, head, cx));
3862 cx.spawn(|workspace, mut cx| async move {
3863 let definitions = definitions.await?;
3864 workspace.update(&mut cx, |workspace, cx| {
3865 for definition in definitions {
3866 let range = definition
3867 .target_range
3868 .to_offset(definition.target_buffer.read(cx));
3869 let target_editor_handle = workspace
3870 .open_item(BufferItemHandle(definition.target_buffer), cx)
3871 .downcast::<Self>()
3872 .unwrap();
3873
3874 target_editor_handle.update(cx, |target_editor, cx| {
3875 // When selecting a definition in a different buffer, disable the nav history
3876 // to avoid creating a history entry at the previous cursor location.
3877 let disabled_history = if editor_handle == target_editor_handle {
3878 None
3879 } else {
3880 target_editor.nav_history.take()
3881 };
3882 target_editor.select_ranges([range], Some(Autoscroll::Center), cx);
3883 if disabled_history.is_some() {
3884 target_editor.nav_history = disabled_history;
3885 }
3886 });
3887 }
3888 });
3889
3890 Ok::<(), anyhow::Error>(())
3891 })
3892 .detach_and_log_err(cx);
3893 }
3894
3895 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
3896 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
3897 let buffer = self.buffer.read(cx).snapshot(cx);
3898 let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
3899 let is_valid = buffer
3900 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone())
3901 .any(|entry| {
3902 entry.diagnostic.is_primary
3903 && !entry.range.is_empty()
3904 && entry.range.start == primary_range_start
3905 && entry.diagnostic.message == active_diagnostics.primary_message
3906 });
3907
3908 if is_valid != active_diagnostics.is_valid {
3909 active_diagnostics.is_valid = is_valid;
3910 let mut new_styles = HashMap::default();
3911 for (block_id, diagnostic) in &active_diagnostics.blocks {
3912 new_styles.insert(
3913 *block_id,
3914 diagnostic_block_renderer(
3915 diagnostic.clone(),
3916 is_valid,
3917 self.build_settings.clone(),
3918 ),
3919 );
3920 }
3921 self.display_map
3922 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
3923 }
3924 }
3925 }
3926
3927 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) {
3928 self.dismiss_diagnostics(cx);
3929 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
3930 let buffer = self.buffer.read(cx).snapshot(cx);
3931
3932 let mut primary_range = None;
3933 let mut primary_message = None;
3934 let mut group_end = Point::zero();
3935 let diagnostic_group = buffer
3936 .diagnostic_group::<Point>(group_id)
3937 .map(|entry| {
3938 if entry.range.end > group_end {
3939 group_end = entry.range.end;
3940 }
3941 if entry.diagnostic.is_primary {
3942 primary_range = Some(entry.range.clone());
3943 primary_message = Some(entry.diagnostic.message.clone());
3944 }
3945 entry
3946 })
3947 .collect::<Vec<_>>();
3948 let primary_range = primary_range.unwrap();
3949 let primary_message = primary_message.unwrap();
3950 let primary_range =
3951 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
3952
3953 let blocks = display_map
3954 .insert_blocks(
3955 diagnostic_group.iter().map(|entry| {
3956 let build_settings = self.build_settings.clone();
3957 let diagnostic = entry.diagnostic.clone();
3958 let message_height = diagnostic.message.lines().count() as u8;
3959
3960 BlockProperties {
3961 position: buffer.anchor_after(entry.range.start),
3962 height: message_height,
3963 render: diagnostic_block_renderer(diagnostic, true, build_settings),
3964 disposition: BlockDisposition::Below,
3965 }
3966 }),
3967 cx,
3968 )
3969 .into_iter()
3970 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
3971 .collect();
3972
3973 Some(ActiveDiagnosticGroup {
3974 primary_range,
3975 primary_message,
3976 blocks,
3977 is_valid: true,
3978 })
3979 });
3980 }
3981
3982 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
3983 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
3984 self.display_map.update(cx, |display_map, cx| {
3985 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
3986 });
3987 cx.notify();
3988 }
3989 }
3990
3991 fn build_columnar_selection(
3992 &mut self,
3993 display_map: &DisplaySnapshot,
3994 row: u32,
3995 columns: &Range<u32>,
3996 reversed: bool,
3997 ) -> Option<Selection<Point>> {
3998 let is_empty = columns.start == columns.end;
3999 let line_len = display_map.line_len(row);
4000 if columns.start < line_len || (is_empty && columns.start == line_len) {
4001 let start = DisplayPoint::new(row, columns.start);
4002 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
4003 Some(Selection {
4004 id: post_inc(&mut self.next_selection_id),
4005 start: start.to_point(display_map),
4006 end: end.to_point(display_map),
4007 reversed,
4008 goal: SelectionGoal::ColumnRange {
4009 start: columns.start,
4010 end: columns.end,
4011 },
4012 })
4013 } else {
4014 None
4015 }
4016 }
4017
4018 pub fn local_selections_in_range(
4019 &self,
4020 range: Range<Anchor>,
4021 display_map: &DisplaySnapshot,
4022 ) -> Vec<Selection<Point>> {
4023 let buffer = &display_map.buffer_snapshot;
4024
4025 let start_ix = match self
4026 .selections
4027 .binary_search_by(|probe| probe.end.cmp(&range.start, &buffer).unwrap())
4028 {
4029 Ok(ix) | Err(ix) => ix,
4030 };
4031 let end_ix = match self
4032 .selections
4033 .binary_search_by(|probe| probe.start.cmp(&range.end, &buffer).unwrap())
4034 {
4035 Ok(ix) => ix + 1,
4036 Err(ix) => ix,
4037 };
4038
4039 fn point_selection(
4040 selection: &Selection<Anchor>,
4041 buffer: &MultiBufferSnapshot,
4042 ) -> Selection<Point> {
4043 let start = selection.start.to_point(&buffer);
4044 let end = selection.end.to_point(&buffer);
4045 Selection {
4046 id: selection.id,
4047 start,
4048 end,
4049 reversed: selection.reversed,
4050 goal: selection.goal,
4051 }
4052 }
4053
4054 self.selections[start_ix..end_ix]
4055 .iter()
4056 .chain(
4057 self.pending_selection
4058 .as_ref()
4059 .map(|pending| &pending.selection),
4060 )
4061 .map(|s| point_selection(s, &buffer))
4062 .collect()
4063 }
4064
4065 pub fn local_selections<'a, D>(&self, cx: &'a AppContext) -> Vec<Selection<D>>
4066 where
4067 D: 'a + TextDimension + Ord + Sub<D, Output = D>,
4068 {
4069 let buffer = self.buffer.read(cx).snapshot(cx);
4070 let mut selections = self
4071 .resolve_selections::<D, _>(self.selections.iter(), &buffer)
4072 .peekable();
4073
4074 let mut pending_selection = self.pending_selection::<D>(&buffer);
4075
4076 iter::from_fn(move || {
4077 if let Some(pending) = pending_selection.as_mut() {
4078 while let Some(next_selection) = selections.peek() {
4079 if pending.start <= next_selection.end && pending.end >= next_selection.start {
4080 let next_selection = selections.next().unwrap();
4081 if next_selection.start < pending.start {
4082 pending.start = next_selection.start;
4083 }
4084 if next_selection.end > pending.end {
4085 pending.end = next_selection.end;
4086 }
4087 } else if next_selection.end < pending.start {
4088 return selections.next();
4089 } else {
4090 break;
4091 }
4092 }
4093
4094 pending_selection.take()
4095 } else {
4096 selections.next()
4097 }
4098 })
4099 .collect()
4100 }
4101
4102 fn resolve_selections<'a, D, I>(
4103 &self,
4104 selections: I,
4105 snapshot: &MultiBufferSnapshot,
4106 ) -> impl 'a + Iterator<Item = Selection<D>>
4107 where
4108 D: TextDimension + Ord + Sub<D, Output = D>,
4109 I: 'a + IntoIterator<Item = &'a Selection<Anchor>>,
4110 {
4111 let (to_summarize, selections) = selections.into_iter().tee();
4112 let mut summaries = snapshot
4113 .summaries_for_anchors::<D, _>(to_summarize.flat_map(|s| [&s.start, &s.end]))
4114 .into_iter();
4115 selections.map(move |s| Selection {
4116 id: s.id,
4117 start: summaries.next().unwrap(),
4118 end: summaries.next().unwrap(),
4119 reversed: s.reversed,
4120 goal: s.goal,
4121 })
4122 }
4123
4124 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4125 &self,
4126 snapshot: &MultiBufferSnapshot,
4127 ) -> Option<Selection<D>> {
4128 self.pending_selection
4129 .as_ref()
4130 .map(|pending| self.resolve_selection(&pending.selection, &snapshot))
4131 }
4132
4133 fn resolve_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4134 &self,
4135 selection: &Selection<Anchor>,
4136 buffer: &MultiBufferSnapshot,
4137 ) -> Selection<D> {
4138 Selection {
4139 id: selection.id,
4140 start: selection.start.summary::<D>(&buffer),
4141 end: selection.end.summary::<D>(&buffer),
4142 reversed: selection.reversed,
4143 goal: selection.goal,
4144 }
4145 }
4146
4147 fn selection_count<'a>(&self) -> usize {
4148 let mut count = self.selections.len();
4149 if self.pending_selection.is_some() {
4150 count += 1;
4151 }
4152 count
4153 }
4154
4155 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4156 &self,
4157 snapshot: &MultiBufferSnapshot,
4158 ) -> Selection<D> {
4159 self.selections
4160 .iter()
4161 .min_by_key(|s| s.id)
4162 .map(|selection| self.resolve_selection(selection, snapshot))
4163 .or_else(|| self.pending_selection(snapshot))
4164 .unwrap()
4165 }
4166
4167 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4168 &self,
4169 snapshot: &MultiBufferSnapshot,
4170 ) -> Selection<D> {
4171 self.resolve_selection(self.newest_anchor_selection().unwrap(), snapshot)
4172 }
4173
4174 pub fn newest_anchor_selection(&self) -> Option<&Selection<Anchor>> {
4175 self.pending_selection
4176 .as_ref()
4177 .map(|s| &s.selection)
4178 .or_else(|| self.selections.iter().max_by_key(|s| s.id))
4179 }
4180
4181 pub fn update_selections<T>(
4182 &mut self,
4183 mut selections: Vec<Selection<T>>,
4184 autoscroll: Option<Autoscroll>,
4185 cx: &mut ViewContext<Self>,
4186 ) where
4187 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
4188 {
4189 let buffer = self.buffer.read(cx).snapshot(cx);
4190 selections.sort_unstable_by_key(|s| s.start);
4191
4192 // Merge overlapping selections.
4193 let mut i = 1;
4194 while i < selections.len() {
4195 if selections[i - 1].end >= selections[i].start {
4196 let removed = selections.remove(i);
4197 if removed.start < selections[i - 1].start {
4198 selections[i - 1].start = removed.start;
4199 }
4200 if removed.end > selections[i - 1].end {
4201 selections[i - 1].end = removed.end;
4202 }
4203 } else {
4204 i += 1;
4205 }
4206 }
4207
4208 if let Some(autoscroll) = autoscroll {
4209 self.request_autoscroll(autoscroll, cx);
4210 }
4211
4212 self.set_selections(
4213 Arc::from_iter(selections.into_iter().map(|selection| {
4214 let end_bias = if selection.end > selection.start {
4215 Bias::Left
4216 } else {
4217 Bias::Right
4218 };
4219 Selection {
4220 id: selection.id,
4221 start: buffer.anchor_after(selection.start),
4222 end: buffer.anchor_at(selection.end, end_bias),
4223 reversed: selection.reversed,
4224 goal: selection.goal,
4225 }
4226 })),
4227 cx,
4228 );
4229 }
4230
4231 /// Compute new ranges for any selections that were located in excerpts that have
4232 /// since been removed.
4233 ///
4234 /// Returns a `HashMap` indicating which selections whose former head position
4235 /// was no longer present. The keys of the map are selection ids. The values are
4236 /// the id of the new excerpt where the head of the selection has been moved.
4237 pub fn refresh_selections(&mut self, cx: &mut ViewContext<Self>) -> HashMap<usize, ExcerptId> {
4238 let snapshot = self.buffer.read(cx).read(cx);
4239 let anchors_with_status = snapshot.refresh_anchors(
4240 self.selections
4241 .iter()
4242 .flat_map(|selection| [&selection.start, &selection.end]),
4243 );
4244 let offsets =
4245 snapshot.summaries_for_anchors::<usize, _>(anchors_with_status.iter().map(|a| &a.1));
4246 let offsets = offsets.chunks(2);
4247 let statuses = anchors_with_status
4248 .chunks(2)
4249 .map(|a| (a[0].0 / 2, a[0].2, a[1].2));
4250
4251 let mut selections_with_lost_position = HashMap::default();
4252 let new_selections = offsets
4253 .zip(statuses)
4254 .map(|(offsets, (selection_ix, kept_start, kept_end))| {
4255 let selection = &self.selections[selection_ix];
4256 let kept_head = if selection.reversed {
4257 kept_start
4258 } else {
4259 kept_end
4260 };
4261 if !kept_head {
4262 selections_with_lost_position
4263 .insert(selection.id, selection.head().excerpt_id.clone());
4264 }
4265
4266 Selection {
4267 id: selection.id,
4268 start: offsets[0],
4269 end: offsets[1],
4270 reversed: selection.reversed,
4271 goal: selection.goal,
4272 }
4273 })
4274 .collect();
4275 drop(snapshot);
4276 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
4277 selections_with_lost_position
4278 }
4279
4280 fn set_selections(&mut self, selections: Arc<[Selection<Anchor>]>, cx: &mut ViewContext<Self>) {
4281 let old_cursor_position = self.newest_anchor_selection().map(|s| s.head());
4282 self.selections = selections;
4283 if self.focused {
4284 self.buffer.update(cx, |buffer, cx| {
4285 buffer.set_active_selections(&self.selections, cx)
4286 });
4287 }
4288
4289 let buffer = self.buffer.read(cx).snapshot(cx);
4290 self.pending_selection = None;
4291 self.add_selections_state = None;
4292 self.select_next_state = None;
4293 self.select_larger_syntax_node_stack.clear();
4294 self.autoclose_stack.invalidate(&self.selections, &buffer);
4295 self.snippet_stack.invalidate(&self.selections, &buffer);
4296
4297 let new_cursor_position = self
4298 .selections
4299 .iter()
4300 .max_by_key(|s| s.id)
4301 .map(|s| s.head());
4302 if let Some(old_cursor_position) = old_cursor_position {
4303 if let Some(new_cursor_position) = new_cursor_position.as_ref() {
4304 self.push_to_nav_history(
4305 old_cursor_position,
4306 Some(new_cursor_position.to_point(&buffer)),
4307 cx,
4308 );
4309 }
4310 }
4311
4312 let completion_menu = match self.context_menu.as_mut() {
4313 Some(ContextMenu::Completions(menu)) => Some(menu),
4314 _ => {
4315 self.context_menu.take();
4316 None
4317 }
4318 };
4319
4320 if let Some((completion_menu, cursor_position)) = completion_menu.zip(new_cursor_position) {
4321 let cursor_position = cursor_position.to_offset(&buffer);
4322 let (word_range, kind) =
4323 buffer.surrounding_word(completion_menu.initial_position.clone());
4324 if kind == Some(CharKind::Word) && word_range.to_inclusive().contains(&cursor_position)
4325 {
4326 let query = Self::completion_query(&buffer, cursor_position);
4327 cx.background()
4328 .block(completion_menu.filter(query.as_deref(), cx.background().clone()));
4329 self.show_completions(&ShowCompletions, cx);
4330 } else {
4331 self.hide_context_menu(cx);
4332 }
4333 }
4334
4335 self.pause_cursor_blinking(cx);
4336 cx.emit(Event::SelectionsChanged);
4337 }
4338
4339 pub fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
4340 self.autoscroll_request = Some(autoscroll);
4341 cx.notify();
4342 }
4343
4344 fn start_transaction(&mut self, cx: &mut ViewContext<Self>) {
4345 self.start_transaction_at(Instant::now(), cx);
4346 }
4347
4348 fn start_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
4349 self.end_selection(cx);
4350 if let Some(tx_id) = self
4351 .buffer
4352 .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
4353 {
4354 self.selection_history
4355 .insert(tx_id, (self.selections.clone(), None));
4356 }
4357 }
4358
4359 fn end_transaction(&mut self, cx: &mut ViewContext<Self>) {
4360 self.end_transaction_at(Instant::now(), cx);
4361 }
4362
4363 fn end_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
4364 if let Some(tx_id) = self
4365 .buffer
4366 .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
4367 {
4368 if let Some((_, end_selections)) = self.selection_history.get_mut(&tx_id) {
4369 *end_selections = Some(self.selections.clone());
4370 } else {
4371 log::error!("unexpectedly ended a transaction that wasn't started by this editor");
4372 }
4373 }
4374 }
4375
4376 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
4377 log::info!("Editor::page_up");
4378 }
4379
4380 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
4381 log::info!("Editor::page_down");
4382 }
4383
4384 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
4385 let mut fold_ranges = Vec::new();
4386
4387 let selections = self.local_selections::<Point>(cx);
4388 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4389 for selection in selections {
4390 let range = selection.display_range(&display_map).sorted();
4391 let buffer_start_row = range.start.to_point(&display_map).row;
4392
4393 for row in (0..=range.end.row()).rev() {
4394 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
4395 let fold_range = self.foldable_range_for_line(&display_map, row);
4396 if fold_range.end.row >= buffer_start_row {
4397 fold_ranges.push(fold_range);
4398 if row <= range.start.row() {
4399 break;
4400 }
4401 }
4402 }
4403 }
4404 }
4405
4406 self.fold_ranges(fold_ranges, cx);
4407 }
4408
4409 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
4410 let selections = self.local_selections::<Point>(cx);
4411 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4412 let buffer = &display_map.buffer_snapshot;
4413 let ranges = selections
4414 .iter()
4415 .map(|s| {
4416 let range = s.display_range(&display_map).sorted();
4417 let mut start = range.start.to_point(&display_map);
4418 let mut end = range.end.to_point(&display_map);
4419 start.column = 0;
4420 end.column = buffer.line_len(end.row);
4421 start..end
4422 })
4423 .collect::<Vec<_>>();
4424 self.unfold_ranges(ranges, cx);
4425 }
4426
4427 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
4428 let max_point = display_map.max_point();
4429 if display_row >= max_point.row() {
4430 false
4431 } else {
4432 let (start_indent, is_blank) = display_map.line_indent(display_row);
4433 if is_blank {
4434 false
4435 } else {
4436 for display_row in display_row + 1..=max_point.row() {
4437 let (indent, is_blank) = display_map.line_indent(display_row);
4438 if !is_blank {
4439 return indent > start_indent;
4440 }
4441 }
4442 false
4443 }
4444 }
4445 }
4446
4447 fn foldable_range_for_line(
4448 &self,
4449 display_map: &DisplaySnapshot,
4450 start_row: u32,
4451 ) -> Range<Point> {
4452 let max_point = display_map.max_point();
4453
4454 let (start_indent, _) = display_map.line_indent(start_row);
4455 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
4456 let mut end = None;
4457 for row in start_row + 1..=max_point.row() {
4458 let (indent, is_blank) = display_map.line_indent(row);
4459 if !is_blank && indent <= start_indent {
4460 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
4461 break;
4462 }
4463 }
4464
4465 let end = end.unwrap_or(max_point);
4466 return start.to_point(display_map)..end.to_point(display_map);
4467 }
4468
4469 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
4470 let selections = self.local_selections::<Point>(cx);
4471 let ranges = selections.into_iter().map(|s| s.start..s.end);
4472 self.fold_ranges(ranges, cx);
4473 }
4474
4475 fn fold_ranges<T: ToOffset>(
4476 &mut self,
4477 ranges: impl IntoIterator<Item = Range<T>>,
4478 cx: &mut ViewContext<Self>,
4479 ) {
4480 let mut ranges = ranges.into_iter().peekable();
4481 if ranges.peek().is_some() {
4482 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
4483 self.request_autoscroll(Autoscroll::Fit, cx);
4484 cx.notify();
4485 }
4486 }
4487
4488 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
4489 if !ranges.is_empty() {
4490 self.display_map
4491 .update(cx, |map, cx| map.unfold(ranges, cx));
4492 self.request_autoscroll(Autoscroll::Fit, cx);
4493 cx.notify();
4494 }
4495 }
4496
4497 pub fn insert_blocks(
4498 &mut self,
4499 blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
4500 cx: &mut ViewContext<Self>,
4501 ) -> Vec<BlockId> {
4502 let blocks = self
4503 .display_map
4504 .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
4505 self.request_autoscroll(Autoscroll::Fit, cx);
4506 blocks
4507 }
4508
4509 pub fn replace_blocks(
4510 &mut self,
4511 blocks: HashMap<BlockId, RenderBlock>,
4512 cx: &mut ViewContext<Self>,
4513 ) {
4514 self.display_map
4515 .update(cx, |display_map, _| display_map.replace_blocks(blocks));
4516 self.request_autoscroll(Autoscroll::Fit, cx);
4517 }
4518
4519 pub fn remove_blocks(&mut self, block_ids: HashSet<BlockId>, cx: &mut ViewContext<Self>) {
4520 self.display_map.update(cx, |display_map, cx| {
4521 display_map.remove_blocks(block_ids, cx)
4522 });
4523 }
4524
4525 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
4526 self.display_map
4527 .update(cx, |map, cx| map.snapshot(cx))
4528 .longest_row()
4529 }
4530
4531 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
4532 self.display_map
4533 .update(cx, |map, cx| map.snapshot(cx))
4534 .max_point()
4535 }
4536
4537 pub fn text(&self, cx: &AppContext) -> String {
4538 self.buffer.read(cx).read(cx).text()
4539 }
4540
4541 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
4542 self.display_map
4543 .update(cx, |map, cx| map.snapshot(cx))
4544 .text()
4545 }
4546
4547 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
4548 self.display_map
4549 .update(cx, |map, cx| map.set_wrap_width(width, cx))
4550 }
4551
4552 pub fn set_highlighted_rows(&mut self, rows: Option<Range<u32>>) {
4553 self.highlighted_rows = rows;
4554 }
4555
4556 pub fn highlighted_rows(&self) -> Option<Range<u32>> {
4557 self.highlighted_rows.clone()
4558 }
4559
4560 pub fn highlight_ranges<T: 'static>(
4561 &mut self,
4562 ranges: Vec<Range<Anchor>>,
4563 color: Color,
4564 cx: &mut ViewContext<Self>,
4565 ) {
4566 self.highlighted_ranges
4567 .insert(TypeId::of::<T>(), (color, ranges));
4568 cx.notify();
4569 }
4570
4571 pub fn clear_highlighted_ranges<T: 'static>(&mut self, cx: &mut ViewContext<Self>) {
4572 self.highlighted_ranges.remove(&TypeId::of::<T>());
4573 cx.notify();
4574 }
4575
4576 #[cfg(feature = "test-support")]
4577 pub fn all_highlighted_ranges(
4578 &mut self,
4579 cx: &mut ViewContext<Self>,
4580 ) -> Vec<(Range<DisplayPoint>, Color)> {
4581 let snapshot = self.snapshot(cx);
4582 let buffer = &snapshot.buffer_snapshot;
4583 let start = buffer.anchor_before(0);
4584 let end = buffer.anchor_after(buffer.len());
4585 self.highlighted_ranges_in_range(start..end, &snapshot)
4586 }
4587
4588 pub fn highlighted_ranges_for_type<T: 'static>(&self) -> Option<(Color, &[Range<Anchor>])> {
4589 self.highlighted_ranges
4590 .get(&TypeId::of::<T>())
4591 .map(|(color, ranges)| (*color, ranges.as_slice()))
4592 }
4593
4594 pub fn highlighted_ranges_in_range(
4595 &self,
4596 search_range: Range<Anchor>,
4597 display_snapshot: &DisplaySnapshot,
4598 ) -> Vec<(Range<DisplayPoint>, Color)> {
4599 let mut results = Vec::new();
4600 let buffer = &display_snapshot.buffer_snapshot;
4601 for (color, ranges) in self.highlighted_ranges.values() {
4602 let start_ix = match ranges.binary_search_by(|probe| {
4603 let cmp = probe.end.cmp(&search_range.start, &buffer).unwrap();
4604 if cmp.is_gt() {
4605 Ordering::Greater
4606 } else {
4607 Ordering::Less
4608 }
4609 }) {
4610 Ok(i) | Err(i) => i,
4611 };
4612 for range in &ranges[start_ix..] {
4613 if range.start.cmp(&search_range.end, &buffer).unwrap().is_ge() {
4614 break;
4615 }
4616 let start = range
4617 .start
4618 .to_point(buffer)
4619 .to_display_point(display_snapshot);
4620 let end = range
4621 .end
4622 .to_point(buffer)
4623 .to_display_point(display_snapshot);
4624 results.push((start..end, *color))
4625 }
4626 }
4627 results
4628 }
4629
4630 fn next_blink_epoch(&mut self) -> usize {
4631 self.blink_epoch += 1;
4632 self.blink_epoch
4633 }
4634
4635 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
4636 if !self.focused {
4637 return;
4638 }
4639
4640 self.show_local_cursors = true;
4641 cx.notify();
4642
4643 let epoch = self.next_blink_epoch();
4644 cx.spawn(|this, mut cx| {
4645 let this = this.downgrade();
4646 async move {
4647 Timer::after(CURSOR_BLINK_INTERVAL).await;
4648 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
4649 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
4650 }
4651 }
4652 })
4653 .detach();
4654 }
4655
4656 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
4657 if epoch == self.blink_epoch {
4658 self.blinking_paused = false;
4659 self.blink_cursors(epoch, cx);
4660 }
4661 }
4662
4663 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
4664 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
4665 self.show_local_cursors = !self.show_local_cursors;
4666 cx.notify();
4667
4668 let epoch = self.next_blink_epoch();
4669 cx.spawn(|this, mut cx| {
4670 let this = this.downgrade();
4671 async move {
4672 Timer::after(CURSOR_BLINK_INTERVAL).await;
4673 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
4674 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
4675 }
4676 }
4677 })
4678 .detach();
4679 }
4680 }
4681
4682 pub fn show_local_cursors(&self) -> bool {
4683 self.show_local_cursors
4684 }
4685
4686 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
4687 self.refresh_active_diagnostics(cx);
4688 cx.notify();
4689 }
4690
4691 fn on_buffer_event(
4692 &mut self,
4693 _: ModelHandle<MultiBuffer>,
4694 event: &language::Event,
4695 cx: &mut ViewContext<Self>,
4696 ) {
4697 match event {
4698 language::Event::Edited => cx.emit(Event::Edited),
4699 language::Event::Dirtied => cx.emit(Event::Dirtied),
4700 language::Event::Saved => cx.emit(Event::Saved),
4701 language::Event::FileHandleChanged => cx.emit(Event::TitleChanged),
4702 language::Event::Reloaded => cx.emit(Event::TitleChanged),
4703 language::Event::Closed => cx.emit(Event::Closed),
4704 _ => {}
4705 }
4706 }
4707
4708 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
4709 cx.notify();
4710 }
4711}
4712
4713impl EditorSnapshot {
4714 pub fn is_focused(&self) -> bool {
4715 self.is_focused
4716 }
4717
4718 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
4719 self.placeholder_text.as_ref()
4720 }
4721
4722 pub fn scroll_position(&self) -> Vector2F {
4723 compute_scroll_position(
4724 &self.display_snapshot,
4725 self.scroll_position,
4726 &self.scroll_top_anchor,
4727 )
4728 }
4729}
4730
4731impl Deref for EditorSnapshot {
4732 type Target = DisplaySnapshot;
4733
4734 fn deref(&self) -> &Self::Target {
4735 &self.display_snapshot
4736 }
4737}
4738
4739impl EditorSettings {
4740 #[cfg(any(test, feature = "test-support"))]
4741 pub fn test(cx: &AppContext) -> Self {
4742 use theme::{ContainedLabel, ContainedText, DiagnosticHeader, DiagnosticPathHeader};
4743
4744 Self {
4745 tab_size: 4,
4746 soft_wrap: SoftWrap::None,
4747 style: {
4748 let font_cache: &gpui::FontCache = cx.font_cache();
4749 let font_family_name = Arc::from("Monaco");
4750 let font_properties = Default::default();
4751 let font_family_id = font_cache.load_family(&[&font_family_name]).unwrap();
4752 let font_id = font_cache
4753 .select_font(font_family_id, &font_properties)
4754 .unwrap();
4755 let text = gpui::fonts::TextStyle {
4756 font_family_name,
4757 font_family_id,
4758 font_id,
4759 font_size: 14.,
4760 color: gpui::color::Color::from_u32(0xff0000ff),
4761 font_properties,
4762 underline: None,
4763 };
4764 let default_diagnostic_style = DiagnosticStyle {
4765 message: text.clone().into(),
4766 header: Default::default(),
4767 text_scale_factor: 1.,
4768 };
4769 EditorStyle {
4770 text: text.clone(),
4771 placeholder_text: None,
4772 background: Default::default(),
4773 gutter_background: Default::default(),
4774 gutter_padding_factor: 2.,
4775 active_line_background: Default::default(),
4776 highlighted_line_background: Default::default(),
4777 line_number: Default::default(),
4778 line_number_active: Default::default(),
4779 selection: Default::default(),
4780 guest_selections: Default::default(),
4781 syntax: Default::default(),
4782 diagnostic_path_header: DiagnosticPathHeader {
4783 container: Default::default(),
4784 filename: ContainedText {
4785 container: Default::default(),
4786 text: text.clone(),
4787 },
4788 path: ContainedText {
4789 container: Default::default(),
4790 text: text.clone(),
4791 },
4792 text_scale_factor: 1.,
4793 },
4794 diagnostic_header: DiagnosticHeader {
4795 container: Default::default(),
4796 message: ContainedLabel {
4797 container: Default::default(),
4798 label: text.clone().into(),
4799 },
4800 code: ContainedText {
4801 container: Default::default(),
4802 text: text.clone(),
4803 },
4804 icon_width_factor: 1.,
4805 text_scale_factor: 1.,
4806 },
4807 error_diagnostic: default_diagnostic_style.clone(),
4808 invalid_error_diagnostic: default_diagnostic_style.clone(),
4809 warning_diagnostic: default_diagnostic_style.clone(),
4810 invalid_warning_diagnostic: default_diagnostic_style.clone(),
4811 information_diagnostic: default_diagnostic_style.clone(),
4812 invalid_information_diagnostic: default_diagnostic_style.clone(),
4813 hint_diagnostic: default_diagnostic_style.clone(),
4814 invalid_hint_diagnostic: default_diagnostic_style.clone(),
4815 autocomplete: Default::default(),
4816 }
4817 },
4818 }
4819 }
4820}
4821
4822fn compute_scroll_position(
4823 snapshot: &DisplaySnapshot,
4824 mut scroll_position: Vector2F,
4825 scroll_top_anchor: &Option<Anchor>,
4826) -> Vector2F {
4827 if let Some(anchor) = scroll_top_anchor {
4828 let scroll_top = anchor.to_display_point(snapshot).row() as f32;
4829 scroll_position.set_y(scroll_top + scroll_position.y());
4830 } else {
4831 scroll_position.set_y(0.);
4832 }
4833 scroll_position
4834}
4835
4836#[derive(Copy, Clone)]
4837pub enum Event {
4838 Activate,
4839 Edited,
4840 Blurred,
4841 Dirtied,
4842 Saved,
4843 TitleChanged,
4844 SelectionsChanged,
4845 Closed,
4846}
4847
4848impl Entity for Editor {
4849 type Event = Event;
4850}
4851
4852impl View for Editor {
4853 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
4854 let settings = (self.build_settings)(cx);
4855 self.display_map.update(cx, |map, cx| {
4856 map.set_font(
4857 settings.style.text.font_id,
4858 settings.style.text.font_size,
4859 cx,
4860 )
4861 });
4862 EditorElement::new(self.handle.clone(), settings).boxed()
4863 }
4864
4865 fn ui_name() -> &'static str {
4866 "Editor"
4867 }
4868
4869 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
4870 self.focused = true;
4871 self.blink_cursors(self.blink_epoch, cx);
4872 self.buffer.update(cx, |buffer, cx| {
4873 buffer.finalize_last_transaction(cx);
4874 buffer.set_active_selections(&self.selections, cx)
4875 });
4876 }
4877
4878 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
4879 self.focused = false;
4880 self.show_local_cursors = false;
4881 self.buffer
4882 .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
4883 self.hide_context_menu(cx);
4884 cx.emit(Event::Blurred);
4885 cx.notify();
4886 }
4887
4888 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
4889 let mut cx = Self::default_keymap_context();
4890 let mode = match self.mode {
4891 EditorMode::SingleLine => "single_line",
4892 EditorMode::AutoHeight { .. } => "auto_height",
4893 EditorMode::Full => "full",
4894 };
4895 cx.map.insert("mode".into(), mode.into());
4896 match self.context_menu.as_ref() {
4897 Some(ContextMenu::Completions(_)) => {
4898 cx.set.insert("showing_completions".into());
4899 }
4900 Some(ContextMenu::CodeActions(_)) => {
4901 cx.set.insert("showing_code_actions".into());
4902 }
4903 None => {}
4904 }
4905 cx
4906 }
4907}
4908
4909impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
4910 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
4911 let start = self.start.to_point(buffer);
4912 let end = self.end.to_point(buffer);
4913 if self.reversed {
4914 end..start
4915 } else {
4916 start..end
4917 }
4918 }
4919
4920 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
4921 let start = self.start.to_offset(buffer);
4922 let end = self.end.to_offset(buffer);
4923 if self.reversed {
4924 end..start
4925 } else {
4926 start..end
4927 }
4928 }
4929
4930 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
4931 let start = self
4932 .start
4933 .to_point(&map.buffer_snapshot)
4934 .to_display_point(map);
4935 let end = self
4936 .end
4937 .to_point(&map.buffer_snapshot)
4938 .to_display_point(map);
4939 if self.reversed {
4940 end..start
4941 } else {
4942 start..end
4943 }
4944 }
4945
4946 fn spanned_rows(
4947 &self,
4948 include_end_if_at_line_start: bool,
4949 map: &DisplaySnapshot,
4950 ) -> Range<u32> {
4951 let start = self.start.to_point(&map.buffer_snapshot);
4952 let mut end = self.end.to_point(&map.buffer_snapshot);
4953 if !include_end_if_at_line_start && start.row != end.row && end.column == 0 {
4954 end.row -= 1;
4955 }
4956
4957 let buffer_start = map.prev_line_boundary(start).0;
4958 let buffer_end = map.next_line_boundary(end).0;
4959 buffer_start.row..buffer_end.row + 1
4960 }
4961}
4962
4963impl<T: InvalidationRegion> InvalidationStack<T> {
4964 fn invalidate<S>(&mut self, selections: &[Selection<S>], buffer: &MultiBufferSnapshot)
4965 where
4966 S: Clone + ToOffset,
4967 {
4968 while let Some(region) = self.last() {
4969 let all_selections_inside_invalidation_ranges =
4970 if selections.len() == region.ranges().len() {
4971 selections
4972 .iter()
4973 .zip(region.ranges().iter().map(|r| r.to_offset(&buffer)))
4974 .all(|(selection, invalidation_range)| {
4975 let head = selection.head().to_offset(&buffer);
4976 invalidation_range.start <= head && invalidation_range.end >= head
4977 })
4978 } else {
4979 false
4980 };
4981
4982 if all_selections_inside_invalidation_ranges {
4983 break;
4984 } else {
4985 self.pop();
4986 }
4987 }
4988 }
4989}
4990
4991impl<T> Default for InvalidationStack<T> {
4992 fn default() -> Self {
4993 Self(Default::default())
4994 }
4995}
4996
4997impl<T> Deref for InvalidationStack<T> {
4998 type Target = Vec<T>;
4999
5000 fn deref(&self) -> &Self::Target {
5001 &self.0
5002 }
5003}
5004
5005impl<T> DerefMut for InvalidationStack<T> {
5006 fn deref_mut(&mut self) -> &mut Self::Target {
5007 &mut self.0
5008 }
5009}
5010
5011impl InvalidationRegion for BracketPairState {
5012 fn ranges(&self) -> &[Range<Anchor>] {
5013 &self.ranges
5014 }
5015}
5016
5017impl InvalidationRegion for SnippetState {
5018 fn ranges(&self) -> &[Range<Anchor>] {
5019 &self.ranges[self.active_index]
5020 }
5021}
5022
5023pub fn diagnostic_block_renderer(
5024 diagnostic: Diagnostic,
5025 is_valid: bool,
5026 build_settings: BuildSettings,
5027) -> RenderBlock {
5028 let mut highlighted_lines = Vec::new();
5029 for line in diagnostic.message.lines() {
5030 highlighted_lines.push(highlight_diagnostic_message(line));
5031 }
5032
5033 Arc::new(move |cx: &BlockContext| {
5034 let settings = build_settings(cx);
5035 let style = diagnostic_style(diagnostic.severity, is_valid, &settings.style);
5036 let font_size = (style.text_scale_factor * settings.style.text.font_size).round();
5037 Flex::column()
5038 .with_children(highlighted_lines.iter().map(|(line, highlights)| {
5039 Label::new(
5040 line.clone(),
5041 style.message.clone().with_font_size(font_size),
5042 )
5043 .with_highlights(highlights.clone())
5044 .contained()
5045 .with_margin_left(cx.anchor_x)
5046 .boxed()
5047 }))
5048 .aligned()
5049 .left()
5050 .boxed()
5051 })
5052}
5053
5054pub fn highlight_diagnostic_message(message: &str) -> (String, Vec<usize>) {
5055 let mut message_without_backticks = String::new();
5056 let mut prev_offset = 0;
5057 let mut inside_block = false;
5058 let mut highlights = Vec::new();
5059 for (match_ix, (offset, _)) in message
5060 .match_indices('`')
5061 .chain([(message.len(), "")])
5062 .enumerate()
5063 {
5064 message_without_backticks.push_str(&message[prev_offset..offset]);
5065 if inside_block {
5066 highlights.extend(prev_offset - match_ix..offset - match_ix);
5067 }
5068
5069 inside_block = !inside_block;
5070 prev_offset = offset + 1;
5071 }
5072
5073 (message_without_backticks, highlights)
5074}
5075
5076pub fn diagnostic_style(
5077 severity: DiagnosticSeverity,
5078 valid: bool,
5079 style: &EditorStyle,
5080) -> DiagnosticStyle {
5081 match (severity, valid) {
5082 (DiagnosticSeverity::ERROR, true) => style.error_diagnostic.clone(),
5083 (DiagnosticSeverity::ERROR, false) => style.invalid_error_diagnostic.clone(),
5084 (DiagnosticSeverity::WARNING, true) => style.warning_diagnostic.clone(),
5085 (DiagnosticSeverity::WARNING, false) => style.invalid_warning_diagnostic.clone(),
5086 (DiagnosticSeverity::INFORMATION, true) => style.information_diagnostic.clone(),
5087 (DiagnosticSeverity::INFORMATION, false) => style.invalid_information_diagnostic.clone(),
5088 (DiagnosticSeverity::HINT, true) => style.hint_diagnostic.clone(),
5089 (DiagnosticSeverity::HINT, false) => style.invalid_hint_diagnostic.clone(),
5090 _ => DiagnosticStyle {
5091 message: style.text.clone().into(),
5092 header: Default::default(),
5093 text_scale_factor: 1.,
5094 },
5095 }
5096}
5097
5098pub fn settings_builder(
5099 buffer: WeakModelHandle<MultiBuffer>,
5100 settings: watch::Receiver<workspace::Settings>,
5101) -> BuildSettings {
5102 Arc::new(move |cx| {
5103 let settings = settings.borrow();
5104 let font_cache = cx.font_cache();
5105 let font_family_id = settings.buffer_font_family;
5106 let font_family_name = cx.font_cache().family_name(font_family_id).unwrap();
5107 let font_properties = Default::default();
5108 let font_id = font_cache
5109 .select_font(font_family_id, &font_properties)
5110 .unwrap();
5111 let font_size = settings.buffer_font_size;
5112
5113 let mut theme = settings.theme.editor.clone();
5114 theme.text = TextStyle {
5115 color: theme.text.color,
5116 font_family_name,
5117 font_family_id,
5118 font_id,
5119 font_size,
5120 font_properties,
5121 underline: None,
5122 };
5123 let language = buffer.upgrade(cx).and_then(|buf| buf.read(cx).language(cx));
5124 let soft_wrap = match settings.soft_wrap(language) {
5125 workspace::settings::SoftWrap::None => SoftWrap::None,
5126 workspace::settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
5127 workspace::settings::SoftWrap::PreferredLineLength => {
5128 SoftWrap::Column(settings.preferred_line_length(language).saturating_sub(1))
5129 }
5130 };
5131
5132 EditorSettings {
5133 tab_size: settings.tab_size,
5134 soft_wrap,
5135 style: theme,
5136 }
5137 })
5138}
5139
5140pub fn combine_syntax_and_fuzzy_match_highlights(
5141 text: &str,
5142 default_style: HighlightStyle,
5143 syntax_ranges: impl Iterator<Item = (Range<usize>, HighlightStyle)>,
5144 match_indices: &[usize],
5145) -> Vec<(Range<usize>, HighlightStyle)> {
5146 let mut result = Vec::new();
5147 let mut match_indices = match_indices.iter().copied().peekable();
5148
5149 for (range, mut syntax_highlight) in syntax_ranges.chain([(usize::MAX..0, Default::default())])
5150 {
5151 syntax_highlight.font_properties.weight(Default::default());
5152
5153 // Add highlights for any fuzzy match characters before the next
5154 // syntax highlight range.
5155 while let Some(&match_index) = match_indices.peek() {
5156 if match_index >= range.start {
5157 break;
5158 }
5159 match_indices.next();
5160 let end_index = char_ix_after(match_index, text);
5161 let mut match_style = default_style;
5162 match_style.font_properties.weight(fonts::Weight::BOLD);
5163 result.push((match_index..end_index, match_style));
5164 }
5165
5166 if range.start == usize::MAX {
5167 break;
5168 }
5169
5170 // Add highlights for any fuzzy match characters within the
5171 // syntax highlight range.
5172 let mut offset = range.start;
5173 while let Some(&match_index) = match_indices.peek() {
5174 if match_index >= range.end {
5175 break;
5176 }
5177
5178 match_indices.next();
5179 if match_index > offset {
5180 result.push((offset..match_index, syntax_highlight));
5181 }
5182
5183 let mut end_index = char_ix_after(match_index, text);
5184 while let Some(&next_match_index) = match_indices.peek() {
5185 if next_match_index == end_index && next_match_index < range.end {
5186 end_index = char_ix_after(next_match_index, text);
5187 match_indices.next();
5188 } else {
5189 break;
5190 }
5191 }
5192
5193 let mut match_style = syntax_highlight;
5194 match_style.font_properties.weight(fonts::Weight::BOLD);
5195 result.push((match_index..end_index, match_style));
5196 offset = end_index;
5197 }
5198
5199 if offset < range.end {
5200 result.push((offset..range.end, syntax_highlight));
5201 }
5202 }
5203
5204 fn char_ix_after(ix: usize, text: &str) -> usize {
5205 ix + text[ix..].chars().next().unwrap().len_utf8()
5206 }
5207
5208 result
5209}
5210
5211fn styled_runs_for_completion_label<'a>(
5212 label: &'a CompletionLabel,
5213 default_color: Color,
5214 syntax_theme: &'a theme::SyntaxTheme,
5215) -> impl 'a + Iterator<Item = (Range<usize>, HighlightStyle)> {
5216 const MUTED_OPACITY: usize = 165;
5217
5218 let mut muted_default_style = HighlightStyle {
5219 color: default_color,
5220 ..Default::default()
5221 };
5222 muted_default_style.color.a = ((default_color.a as usize * MUTED_OPACITY) / 255) as u8;
5223
5224 let mut prev_end = label.filter_range.end;
5225 label
5226 .runs
5227 .iter()
5228 .enumerate()
5229 .flat_map(move |(ix, (range, highlight_id))| {
5230 let style = if let Some(style) = highlight_id.style(syntax_theme) {
5231 style
5232 } else {
5233 return Default::default();
5234 };
5235 let mut muted_style = style.clone();
5236 muted_style.color.a = ((style.color.a as usize * MUTED_OPACITY) / 255) as u8;
5237
5238 let mut runs = SmallVec::<[(Range<usize>, HighlightStyle); 3]>::new();
5239 if range.start >= label.filter_range.end {
5240 if range.start > prev_end {
5241 runs.push((prev_end..range.start, muted_default_style));
5242 }
5243 runs.push((range.clone(), muted_style));
5244 } else if range.end <= label.filter_range.end {
5245 runs.push((range.clone(), style));
5246 } else {
5247 runs.push((range.start..label.filter_range.end, style));
5248 runs.push((label.filter_range.end..range.end, muted_style));
5249 }
5250 prev_end = cmp::max(prev_end, range.end);
5251
5252 if ix + 1 == label.runs.len() && label.text.len() > prev_end {
5253 runs.push((prev_end..label.text.len(), muted_default_style));
5254 }
5255
5256 runs
5257 })
5258}
5259
5260#[cfg(test)]
5261mod tests {
5262 use super::*;
5263 use language::LanguageConfig;
5264 use lsp::FakeLanguageServer;
5265 use project::{FakeFs, ProjectPath};
5266 use std::{cell::RefCell, rc::Rc, time::Instant};
5267 use text::Point;
5268 use unindent::Unindent;
5269 use util::test::sample_text;
5270
5271 #[gpui::test]
5272 fn test_undo_redo_with_selection_restoration(cx: &mut MutableAppContext) {
5273 let mut now = Instant::now();
5274 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
5275 let group_interval = buffer.read(cx).transaction_group_interval();
5276 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5277 let settings = EditorSettings::test(cx);
5278 let (_, editor) = cx.add_window(Default::default(), |cx| {
5279 build_editor(buffer.clone(), settings, cx)
5280 });
5281
5282 editor.update(cx, |editor, cx| {
5283 editor.start_transaction_at(now, cx);
5284 editor.select_ranges([2..4], None, cx);
5285 editor.insert("cd", cx);
5286 editor.end_transaction_at(now, cx);
5287 assert_eq!(editor.text(cx), "12cd56");
5288 assert_eq!(editor.selected_ranges(cx), vec![4..4]);
5289
5290 editor.start_transaction_at(now, cx);
5291 editor.select_ranges([4..5], None, cx);
5292 editor.insert("e", cx);
5293 editor.end_transaction_at(now, cx);
5294 assert_eq!(editor.text(cx), "12cde6");
5295 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
5296
5297 now += group_interval + Duration::from_millis(1);
5298 editor.select_ranges([2..2], None, cx);
5299
5300 // Simulate an edit in another editor
5301 buffer.update(cx, |buffer, cx| {
5302 buffer.start_transaction_at(now, cx);
5303 buffer.edit([0..1], "a", cx);
5304 buffer.edit([1..1], "b", cx);
5305 buffer.end_transaction_at(now, cx);
5306 });
5307
5308 assert_eq!(editor.text(cx), "ab2cde6");
5309 assert_eq!(editor.selected_ranges(cx), vec![3..3]);
5310
5311 // Last transaction happened past the group interval in a different editor.
5312 // Undo it individually and don't restore selections.
5313 editor.undo(&Undo, cx);
5314 assert_eq!(editor.text(cx), "12cde6");
5315 assert_eq!(editor.selected_ranges(cx), vec![2..2]);
5316
5317 // First two transactions happened within the group interval in this editor.
5318 // Undo them together and restore selections.
5319 editor.undo(&Undo, cx);
5320 editor.undo(&Undo, cx); // Undo stack is empty here, so this is a no-op.
5321 assert_eq!(editor.text(cx), "123456");
5322 assert_eq!(editor.selected_ranges(cx), vec![0..0]);
5323
5324 // Redo the first two transactions together.
5325 editor.redo(&Redo, cx);
5326 assert_eq!(editor.text(cx), "12cde6");
5327 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
5328
5329 // Redo the last transaction on its own.
5330 editor.redo(&Redo, cx);
5331 assert_eq!(editor.text(cx), "ab2cde6");
5332 assert_eq!(editor.selected_ranges(cx), vec![6..6]);
5333
5334 // Test empty transactions.
5335 editor.start_transaction_at(now, cx);
5336 editor.end_transaction_at(now, cx);
5337 editor.undo(&Undo, cx);
5338 assert_eq!(editor.text(cx), "12cde6");
5339 });
5340 }
5341
5342 #[gpui::test]
5343 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
5344 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
5345 let settings = EditorSettings::test(cx);
5346 let (_, editor) =
5347 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5348
5349 editor.update(cx, |view, cx| {
5350 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
5351 });
5352
5353 assert_eq!(
5354 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5355 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
5356 );
5357
5358 editor.update(cx, |view, cx| {
5359 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
5360 });
5361
5362 assert_eq!(
5363 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5364 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
5365 );
5366
5367 editor.update(cx, |view, cx| {
5368 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
5369 });
5370
5371 assert_eq!(
5372 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5373 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
5374 );
5375
5376 editor.update(cx, |view, cx| {
5377 view.end_selection(cx);
5378 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
5379 });
5380
5381 assert_eq!(
5382 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5383 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
5384 );
5385
5386 editor.update(cx, |view, cx| {
5387 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
5388 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
5389 });
5390
5391 assert_eq!(
5392 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5393 [
5394 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
5395 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
5396 ]
5397 );
5398
5399 editor.update(cx, |view, cx| {
5400 view.end_selection(cx);
5401 });
5402
5403 assert_eq!(
5404 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5405 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
5406 );
5407 }
5408
5409 #[gpui::test]
5410 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
5411 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
5412 let settings = EditorSettings::test(cx);
5413 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5414
5415 view.update(cx, |view, cx| {
5416 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
5417 assert_eq!(
5418 view.selected_display_ranges(cx),
5419 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
5420 );
5421 });
5422
5423 view.update(cx, |view, cx| {
5424 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
5425 assert_eq!(
5426 view.selected_display_ranges(cx),
5427 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
5428 );
5429 });
5430
5431 view.update(cx, |view, cx| {
5432 view.cancel(&Cancel, cx);
5433 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
5434 assert_eq!(
5435 view.selected_display_ranges(cx),
5436 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
5437 );
5438 });
5439 }
5440
5441 #[gpui::test]
5442 fn test_navigation_history(cx: &mut gpui::MutableAppContext) {
5443 cx.add_window(Default::default(), |cx| {
5444 use workspace::ItemView;
5445 let nav_history = Rc::new(RefCell::new(workspace::NavHistory::default()));
5446 let settings = EditorSettings::test(&cx);
5447 let buffer = MultiBuffer::build_simple(&sample_text(30, 5, 'a'), cx);
5448 let mut editor = build_editor(buffer.clone(), settings, cx);
5449 editor.nav_history = Some(ItemNavHistory::new(nav_history.clone(), &cx.handle()));
5450
5451 // Move the cursor a small distance.
5452 // Nothing is added to the navigation history.
5453 editor.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
5454 editor.select_display_ranges(&[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)], cx);
5455 assert!(nav_history.borrow_mut().pop_backward().is_none());
5456
5457 // Move the cursor a large distance.
5458 // The history can jump back to the previous position.
5459 editor.select_display_ranges(&[DisplayPoint::new(13, 0)..DisplayPoint::new(13, 3)], cx);
5460 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
5461 editor.navigate(nav_entry.data.unwrap(), cx);
5462 assert_eq!(nav_entry.item_view.id(), cx.view_id());
5463 assert_eq!(
5464 editor.selected_display_ranges(cx),
5465 &[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)]
5466 );
5467
5468 // Move the cursor a small distance via the mouse.
5469 // Nothing is added to the navigation history.
5470 editor.begin_selection(DisplayPoint::new(5, 0), false, 1, cx);
5471 editor.end_selection(cx);
5472 assert_eq!(
5473 editor.selected_display_ranges(cx),
5474 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
5475 );
5476 assert!(nav_history.borrow_mut().pop_backward().is_none());
5477
5478 // Move the cursor a large distance via the mouse.
5479 // The history can jump back to the previous position.
5480 editor.begin_selection(DisplayPoint::new(15, 0), false, 1, cx);
5481 editor.end_selection(cx);
5482 assert_eq!(
5483 editor.selected_display_ranges(cx),
5484 &[DisplayPoint::new(15, 0)..DisplayPoint::new(15, 0)]
5485 );
5486 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
5487 editor.navigate(nav_entry.data.unwrap(), cx);
5488 assert_eq!(nav_entry.item_view.id(), cx.view_id());
5489 assert_eq!(
5490 editor.selected_display_ranges(cx),
5491 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
5492 );
5493
5494 editor
5495 });
5496 }
5497
5498 #[gpui::test]
5499 fn test_cancel(cx: &mut gpui::MutableAppContext) {
5500 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
5501 let settings = EditorSettings::test(cx);
5502 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5503
5504 view.update(cx, |view, cx| {
5505 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
5506 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
5507 view.end_selection(cx);
5508
5509 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
5510 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
5511 view.end_selection(cx);
5512 assert_eq!(
5513 view.selected_display_ranges(cx),
5514 [
5515 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5516 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
5517 ]
5518 );
5519 });
5520
5521 view.update(cx, |view, cx| {
5522 view.cancel(&Cancel, cx);
5523 assert_eq!(
5524 view.selected_display_ranges(cx),
5525 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
5526 );
5527 });
5528
5529 view.update(cx, |view, cx| {
5530 view.cancel(&Cancel, cx);
5531 assert_eq!(
5532 view.selected_display_ranges(cx),
5533 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
5534 );
5535 });
5536 }
5537
5538 #[gpui::test]
5539 fn test_fold(cx: &mut gpui::MutableAppContext) {
5540 let buffer = MultiBuffer::build_simple(
5541 &"
5542 impl Foo {
5543 // Hello!
5544
5545 fn a() {
5546 1
5547 }
5548
5549 fn b() {
5550 2
5551 }
5552
5553 fn c() {
5554 3
5555 }
5556 }
5557 "
5558 .unindent(),
5559 cx,
5560 );
5561 let settings = EditorSettings::test(&cx);
5562 let (_, view) = cx.add_window(Default::default(), |cx| {
5563 build_editor(buffer.clone(), settings, cx)
5564 });
5565
5566 view.update(cx, |view, cx| {
5567 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx);
5568 view.fold(&Fold, cx);
5569 assert_eq!(
5570 view.display_text(cx),
5571 "
5572 impl Foo {
5573 // Hello!
5574
5575 fn a() {
5576 1
5577 }
5578
5579 fn b() {…
5580 }
5581
5582 fn c() {…
5583 }
5584 }
5585 "
5586 .unindent(),
5587 );
5588
5589 view.fold(&Fold, cx);
5590 assert_eq!(
5591 view.display_text(cx),
5592 "
5593 impl Foo {…
5594 }
5595 "
5596 .unindent(),
5597 );
5598
5599 view.unfold(&Unfold, cx);
5600 assert_eq!(
5601 view.display_text(cx),
5602 "
5603 impl Foo {
5604 // Hello!
5605
5606 fn a() {
5607 1
5608 }
5609
5610 fn b() {…
5611 }
5612
5613 fn c() {…
5614 }
5615 }
5616 "
5617 .unindent(),
5618 );
5619
5620 view.unfold(&Unfold, cx);
5621 assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text());
5622 });
5623 }
5624
5625 #[gpui::test]
5626 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
5627 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
5628 let settings = EditorSettings::test(&cx);
5629 let (_, view) = cx.add_window(Default::default(), |cx| {
5630 build_editor(buffer.clone(), settings, cx)
5631 });
5632
5633 buffer.update(cx, |buffer, cx| {
5634 buffer.edit(
5635 vec![
5636 Point::new(1, 0)..Point::new(1, 0),
5637 Point::new(1, 1)..Point::new(1, 1),
5638 ],
5639 "\t",
5640 cx,
5641 );
5642 });
5643
5644 view.update(cx, |view, cx| {
5645 assert_eq!(
5646 view.selected_display_ranges(cx),
5647 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
5648 );
5649
5650 view.move_down(&MoveDown, cx);
5651 assert_eq!(
5652 view.selected_display_ranges(cx),
5653 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
5654 );
5655
5656 view.move_right(&MoveRight, cx);
5657 assert_eq!(
5658 view.selected_display_ranges(cx),
5659 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
5660 );
5661
5662 view.move_left(&MoveLeft, cx);
5663 assert_eq!(
5664 view.selected_display_ranges(cx),
5665 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
5666 );
5667
5668 view.move_up(&MoveUp, cx);
5669 assert_eq!(
5670 view.selected_display_ranges(cx),
5671 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
5672 );
5673
5674 view.move_to_end(&MoveToEnd, cx);
5675 assert_eq!(
5676 view.selected_display_ranges(cx),
5677 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
5678 );
5679
5680 view.move_to_beginning(&MoveToBeginning, cx);
5681 assert_eq!(
5682 view.selected_display_ranges(cx),
5683 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
5684 );
5685
5686 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx);
5687 view.select_to_beginning(&SelectToBeginning, cx);
5688 assert_eq!(
5689 view.selected_display_ranges(cx),
5690 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
5691 );
5692
5693 view.select_to_end(&SelectToEnd, cx);
5694 assert_eq!(
5695 view.selected_display_ranges(cx),
5696 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
5697 );
5698 });
5699 }
5700
5701 #[gpui::test]
5702 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
5703 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
5704 let settings = EditorSettings::test(&cx);
5705 let (_, view) = cx.add_window(Default::default(), |cx| {
5706 build_editor(buffer.clone(), settings, cx)
5707 });
5708
5709 assert_eq!('ⓐ'.len_utf8(), 3);
5710 assert_eq!('α'.len_utf8(), 2);
5711
5712 view.update(cx, |view, cx| {
5713 view.fold_ranges(
5714 vec![
5715 Point::new(0, 6)..Point::new(0, 12),
5716 Point::new(1, 2)..Point::new(1, 4),
5717 Point::new(2, 4)..Point::new(2, 8),
5718 ],
5719 cx,
5720 );
5721 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
5722
5723 view.move_right(&MoveRight, cx);
5724 assert_eq!(
5725 view.selected_display_ranges(cx),
5726 &[empty_range(0, "ⓐ".len())]
5727 );
5728 view.move_right(&MoveRight, cx);
5729 assert_eq!(
5730 view.selected_display_ranges(cx),
5731 &[empty_range(0, "ⓐⓑ".len())]
5732 );
5733 view.move_right(&MoveRight, cx);
5734 assert_eq!(
5735 view.selected_display_ranges(cx),
5736 &[empty_range(0, "ⓐⓑ…".len())]
5737 );
5738
5739 view.move_down(&MoveDown, cx);
5740 assert_eq!(
5741 view.selected_display_ranges(cx),
5742 &[empty_range(1, "ab…".len())]
5743 );
5744 view.move_left(&MoveLeft, cx);
5745 assert_eq!(
5746 view.selected_display_ranges(cx),
5747 &[empty_range(1, "ab".len())]
5748 );
5749 view.move_left(&MoveLeft, cx);
5750 assert_eq!(
5751 view.selected_display_ranges(cx),
5752 &[empty_range(1, "a".len())]
5753 );
5754
5755 view.move_down(&MoveDown, cx);
5756 assert_eq!(
5757 view.selected_display_ranges(cx),
5758 &[empty_range(2, "α".len())]
5759 );
5760 view.move_right(&MoveRight, cx);
5761 assert_eq!(
5762 view.selected_display_ranges(cx),
5763 &[empty_range(2, "αβ".len())]
5764 );
5765 view.move_right(&MoveRight, cx);
5766 assert_eq!(
5767 view.selected_display_ranges(cx),
5768 &[empty_range(2, "αβ…".len())]
5769 );
5770 view.move_right(&MoveRight, cx);
5771 assert_eq!(
5772 view.selected_display_ranges(cx),
5773 &[empty_range(2, "αβ…ε".len())]
5774 );
5775
5776 view.move_up(&MoveUp, cx);
5777 assert_eq!(
5778 view.selected_display_ranges(cx),
5779 &[empty_range(1, "ab…e".len())]
5780 );
5781 view.move_up(&MoveUp, cx);
5782 assert_eq!(
5783 view.selected_display_ranges(cx),
5784 &[empty_range(0, "ⓐⓑ…ⓔ".len())]
5785 );
5786 view.move_left(&MoveLeft, cx);
5787 assert_eq!(
5788 view.selected_display_ranges(cx),
5789 &[empty_range(0, "ⓐⓑ…".len())]
5790 );
5791 view.move_left(&MoveLeft, cx);
5792 assert_eq!(
5793 view.selected_display_ranges(cx),
5794 &[empty_range(0, "ⓐⓑ".len())]
5795 );
5796 view.move_left(&MoveLeft, cx);
5797 assert_eq!(
5798 view.selected_display_ranges(cx),
5799 &[empty_range(0, "ⓐ".len())]
5800 );
5801 });
5802 }
5803
5804 #[gpui::test]
5805 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
5806 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
5807 let settings = EditorSettings::test(&cx);
5808 let (_, view) = cx.add_window(Default::default(), |cx| {
5809 build_editor(buffer.clone(), settings, cx)
5810 });
5811 view.update(cx, |view, cx| {
5812 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx);
5813 view.move_down(&MoveDown, cx);
5814 assert_eq!(
5815 view.selected_display_ranges(cx),
5816 &[empty_range(1, "abcd".len())]
5817 );
5818
5819 view.move_down(&MoveDown, cx);
5820 assert_eq!(
5821 view.selected_display_ranges(cx),
5822 &[empty_range(2, "αβγ".len())]
5823 );
5824
5825 view.move_down(&MoveDown, cx);
5826 assert_eq!(
5827 view.selected_display_ranges(cx),
5828 &[empty_range(3, "abcd".len())]
5829 );
5830
5831 view.move_down(&MoveDown, cx);
5832 assert_eq!(
5833 view.selected_display_ranges(cx),
5834 &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
5835 );
5836
5837 view.move_up(&MoveUp, cx);
5838 assert_eq!(
5839 view.selected_display_ranges(cx),
5840 &[empty_range(3, "abcd".len())]
5841 );
5842
5843 view.move_up(&MoveUp, cx);
5844 assert_eq!(
5845 view.selected_display_ranges(cx),
5846 &[empty_range(2, "αβγ".len())]
5847 );
5848 });
5849 }
5850
5851 #[gpui::test]
5852 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
5853 let buffer = MultiBuffer::build_simple("abc\n def", cx);
5854 let settings = EditorSettings::test(&cx);
5855 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5856 view.update(cx, |view, cx| {
5857 view.select_display_ranges(
5858 &[
5859 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5860 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
5861 ],
5862 cx,
5863 );
5864 });
5865
5866 view.update(cx, |view, cx| {
5867 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
5868 assert_eq!(
5869 view.selected_display_ranges(cx),
5870 &[
5871 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5872 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5873 ]
5874 );
5875 });
5876
5877 view.update(cx, |view, cx| {
5878 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
5879 assert_eq!(
5880 view.selected_display_ranges(cx),
5881 &[
5882 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5883 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5884 ]
5885 );
5886 });
5887
5888 view.update(cx, |view, cx| {
5889 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
5890 assert_eq!(
5891 view.selected_display_ranges(cx),
5892 &[
5893 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5894 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5895 ]
5896 );
5897 });
5898
5899 view.update(cx, |view, cx| {
5900 view.move_to_end_of_line(&MoveToEndOfLine, cx);
5901 assert_eq!(
5902 view.selected_display_ranges(cx),
5903 &[
5904 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5905 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
5906 ]
5907 );
5908 });
5909
5910 // Moving to the end of line again is a no-op.
5911 view.update(cx, |view, cx| {
5912 view.move_to_end_of_line(&MoveToEndOfLine, cx);
5913 assert_eq!(
5914 view.selected_display_ranges(cx),
5915 &[
5916 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5917 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
5918 ]
5919 );
5920 });
5921
5922 view.update(cx, |view, cx| {
5923 view.move_left(&MoveLeft, cx);
5924 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
5925 assert_eq!(
5926 view.selected_display_ranges(cx),
5927 &[
5928 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
5929 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
5930 ]
5931 );
5932 });
5933
5934 view.update(cx, |view, cx| {
5935 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
5936 assert_eq!(
5937 view.selected_display_ranges(cx),
5938 &[
5939 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
5940 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
5941 ]
5942 );
5943 });
5944
5945 view.update(cx, |view, cx| {
5946 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
5947 assert_eq!(
5948 view.selected_display_ranges(cx),
5949 &[
5950 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
5951 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
5952 ]
5953 );
5954 });
5955
5956 view.update(cx, |view, cx| {
5957 view.select_to_end_of_line(&SelectToEndOfLine(true), cx);
5958 assert_eq!(
5959 view.selected_display_ranges(cx),
5960 &[
5961 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
5962 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
5963 ]
5964 );
5965 });
5966
5967 view.update(cx, |view, cx| {
5968 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
5969 assert_eq!(view.display_text(cx), "ab\n de");
5970 assert_eq!(
5971 view.selected_display_ranges(cx),
5972 &[
5973 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5974 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
5975 ]
5976 );
5977 });
5978
5979 view.update(cx, |view, cx| {
5980 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
5981 assert_eq!(view.display_text(cx), "\n");
5982 assert_eq!(
5983 view.selected_display_ranges(cx),
5984 &[
5985 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5986 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5987 ]
5988 );
5989 });
5990 }
5991
5992 #[gpui::test]
5993 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
5994 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
5995 let settings = EditorSettings::test(&cx);
5996 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5997 view.update(cx, |view, cx| {
5998 view.select_display_ranges(
5999 &[
6000 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
6001 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
6002 ],
6003 cx,
6004 );
6005 });
6006
6007 view.update(cx, |view, cx| {
6008 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6009 assert_eq!(
6010 view.selected_display_ranges(cx),
6011 &[
6012 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
6013 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
6014 ]
6015 );
6016 });
6017
6018 view.update(cx, |view, cx| {
6019 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6020 assert_eq!(
6021 view.selected_display_ranges(cx),
6022 &[
6023 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
6024 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2),
6025 ]
6026 );
6027 });
6028
6029 view.update(cx, |view, cx| {
6030 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6031 assert_eq!(
6032 view.selected_display_ranges(cx),
6033 &[
6034 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
6035 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
6036 ]
6037 );
6038 });
6039
6040 view.update(cx, |view, cx| {
6041 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6042 assert_eq!(
6043 view.selected_display_ranges(cx),
6044 &[
6045 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6046 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6047 ]
6048 );
6049 });
6050
6051 view.update(cx, |view, cx| {
6052 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6053 assert_eq!(
6054 view.selected_display_ranges(cx),
6055 &[
6056 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6057 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 23),
6058 ]
6059 );
6060 });
6061
6062 view.update(cx, |view, cx| {
6063 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6064 assert_eq!(
6065 view.selected_display_ranges(cx),
6066 &[
6067 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6068 DisplayPoint::new(0, 24)..DisplayPoint::new(0, 24),
6069 ]
6070 );
6071 });
6072
6073 view.update(cx, |view, cx| {
6074 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6075 assert_eq!(
6076 view.selected_display_ranges(cx),
6077 &[
6078 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
6079 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6080 ]
6081 );
6082 });
6083
6084 view.update(cx, |view, cx| {
6085 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6086 assert_eq!(
6087 view.selected_display_ranges(cx),
6088 &[
6089 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
6090 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
6091 ]
6092 );
6093 });
6094
6095 view.update(cx, |view, cx| {
6096 view.move_right(&MoveRight, cx);
6097 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
6098 assert_eq!(
6099 view.selected_display_ranges(cx),
6100 &[
6101 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
6102 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
6103 ]
6104 );
6105 });
6106
6107 view.update(cx, |view, cx| {
6108 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
6109 assert_eq!(
6110 view.selected_display_ranges(cx),
6111 &[
6112 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 7),
6113 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 2),
6114 ]
6115 );
6116 });
6117
6118 view.update(cx, |view, cx| {
6119 view.select_to_next_word_boundary(&SelectToNextWordBoundary, cx);
6120 assert_eq!(
6121 view.selected_display_ranges(cx),
6122 &[
6123 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
6124 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
6125 ]
6126 );
6127 });
6128 }
6129
6130 #[gpui::test]
6131 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
6132 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
6133 let settings = EditorSettings::test(&cx);
6134 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6135
6136 view.update(cx, |view, cx| {
6137 view.set_wrap_width(Some(140.), cx);
6138 assert_eq!(
6139 view.display_text(cx),
6140 "use one::{\n two::three::\n four::five\n};"
6141 );
6142
6143 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx);
6144
6145 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6146 assert_eq!(
6147 view.selected_display_ranges(cx),
6148 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
6149 );
6150
6151 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6152 assert_eq!(
6153 view.selected_display_ranges(cx),
6154 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
6155 );
6156
6157 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6158 assert_eq!(
6159 view.selected_display_ranges(cx),
6160 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
6161 );
6162
6163 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6164 assert_eq!(
6165 view.selected_display_ranges(cx),
6166 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
6167 );
6168
6169 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6170 assert_eq!(
6171 view.selected_display_ranges(cx),
6172 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
6173 );
6174
6175 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6176 assert_eq!(
6177 view.selected_display_ranges(cx),
6178 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
6179 );
6180 });
6181 }
6182
6183 #[gpui::test]
6184 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
6185 let buffer = MultiBuffer::build_simple("one two three four", cx);
6186 let settings = EditorSettings::test(&cx);
6187 let (_, view) = cx.add_window(Default::default(), |cx| {
6188 build_editor(buffer.clone(), settings, cx)
6189 });
6190
6191 view.update(cx, |view, cx| {
6192 view.select_display_ranges(
6193 &[
6194 // an empty selection - the preceding word fragment is deleted
6195 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6196 // characters selected - they are deleted
6197 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
6198 ],
6199 cx,
6200 );
6201 view.delete_to_previous_word_boundary(&DeleteToPreviousWordBoundary, cx);
6202 });
6203
6204 assert_eq!(buffer.read(cx).read(cx).text(), "e two te four");
6205
6206 view.update(cx, |view, cx| {
6207 view.select_display_ranges(
6208 &[
6209 // an empty selection - the following word fragment is deleted
6210 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6211 // characters selected - they are deleted
6212 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
6213 ],
6214 cx,
6215 );
6216 view.delete_to_next_word_boundary(&DeleteToNextWordBoundary, cx);
6217 });
6218
6219 assert_eq!(buffer.read(cx).read(cx).text(), "e t te our");
6220 }
6221
6222 #[gpui::test]
6223 fn test_newline(cx: &mut gpui::MutableAppContext) {
6224 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
6225 let settings = EditorSettings::test(&cx);
6226 let (_, view) = cx.add_window(Default::default(), |cx| {
6227 build_editor(buffer.clone(), settings, cx)
6228 });
6229
6230 view.update(cx, |view, cx| {
6231 view.select_display_ranges(
6232 &[
6233 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6234 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6235 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
6236 ],
6237 cx,
6238 );
6239
6240 view.newline(&Newline, cx);
6241 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
6242 });
6243 }
6244
6245 #[gpui::test]
6246 fn test_newline_with_old_selections(cx: &mut gpui::MutableAppContext) {
6247 let buffer = MultiBuffer::build_simple(
6248 "
6249 a
6250 b(
6251 X
6252 )
6253 c(
6254 X
6255 )
6256 "
6257 .unindent()
6258 .as_str(),
6259 cx,
6260 );
6261
6262 let settings = EditorSettings::test(&cx);
6263 let (_, editor) = cx.add_window(Default::default(), |cx| {
6264 let mut editor = build_editor(buffer.clone(), settings, cx);
6265 editor.select_ranges(
6266 [
6267 Point::new(2, 4)..Point::new(2, 5),
6268 Point::new(5, 4)..Point::new(5, 5),
6269 ],
6270 None,
6271 cx,
6272 );
6273 editor
6274 });
6275
6276 // Edit the buffer directly, deleting ranges surrounding the editor's selections
6277 buffer.update(cx, |buffer, cx| {
6278 buffer.edit(
6279 [
6280 Point::new(1, 2)..Point::new(3, 0),
6281 Point::new(4, 2)..Point::new(6, 0),
6282 ],
6283 "",
6284 cx,
6285 );
6286 assert_eq!(
6287 buffer.read(cx).text(),
6288 "
6289 a
6290 b()
6291 c()
6292 "
6293 .unindent()
6294 );
6295 });
6296
6297 editor.update(cx, |editor, cx| {
6298 assert_eq!(
6299 editor.selected_ranges(cx),
6300 &[
6301 Point::new(1, 2)..Point::new(1, 2),
6302 Point::new(2, 2)..Point::new(2, 2),
6303 ],
6304 );
6305
6306 editor.newline(&Newline, cx);
6307 assert_eq!(
6308 editor.text(cx),
6309 "
6310 a
6311 b(
6312 )
6313 c(
6314 )
6315 "
6316 .unindent()
6317 );
6318
6319 // The selections are moved after the inserted newlines
6320 assert_eq!(
6321 editor.selected_ranges(cx),
6322 &[
6323 Point::new(2, 0)..Point::new(2, 0),
6324 Point::new(4, 0)..Point::new(4, 0),
6325 ],
6326 );
6327 });
6328 }
6329
6330 #[gpui::test]
6331 fn test_insert_with_old_selections(cx: &mut gpui::MutableAppContext) {
6332 let buffer = MultiBuffer::build_simple("a( X ), b( Y ), c( Z )", cx);
6333
6334 let settings = EditorSettings::test(&cx);
6335 let (_, editor) = cx.add_window(Default::default(), |cx| {
6336 let mut editor = build_editor(buffer.clone(), settings, cx);
6337 editor.select_ranges([3..4, 11..12, 19..20], None, cx);
6338 editor
6339 });
6340
6341 // Edit the buffer directly, deleting ranges surrounding the editor's selections
6342 buffer.update(cx, |buffer, cx| {
6343 buffer.edit([2..5, 10..13, 18..21], "", cx);
6344 assert_eq!(buffer.read(cx).text(), "a(), b(), c()".unindent());
6345 });
6346
6347 editor.update(cx, |editor, cx| {
6348 assert_eq!(editor.selected_ranges(cx), &[2..2, 7..7, 12..12],);
6349
6350 editor.insert("Z", cx);
6351 assert_eq!(editor.text(cx), "a(Z), b(Z), c(Z)");
6352
6353 // The selections are moved after the inserted characters
6354 assert_eq!(editor.selected_ranges(cx), &[3..3, 9..9, 15..15],);
6355 });
6356 }
6357
6358 #[gpui::test]
6359 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
6360 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
6361 let settings = EditorSettings::test(&cx);
6362 let (_, view) = cx.add_window(Default::default(), |cx| {
6363 build_editor(buffer.clone(), settings, cx)
6364 });
6365
6366 view.update(cx, |view, cx| {
6367 // two selections on the same line
6368 view.select_display_ranges(
6369 &[
6370 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
6371 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
6372 ],
6373 cx,
6374 );
6375
6376 // indent from mid-tabstop to full tabstop
6377 view.tab(&Tab, cx);
6378 assert_eq!(view.text(cx), " one two\nthree\n four");
6379 assert_eq!(
6380 view.selected_display_ranges(cx),
6381 &[
6382 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
6383 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
6384 ]
6385 );
6386
6387 // outdent from 1 tabstop to 0 tabstops
6388 view.outdent(&Outdent, cx);
6389 assert_eq!(view.text(cx), "one two\nthree\n four");
6390 assert_eq!(
6391 view.selected_display_ranges(cx),
6392 &[
6393 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
6394 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
6395 ]
6396 );
6397
6398 // select across line ending
6399 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx);
6400
6401 // indent and outdent affect only the preceding line
6402 view.tab(&Tab, cx);
6403 assert_eq!(view.text(cx), "one two\n three\n four");
6404 assert_eq!(
6405 view.selected_display_ranges(cx),
6406 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
6407 );
6408 view.outdent(&Outdent, cx);
6409 assert_eq!(view.text(cx), "one two\nthree\n four");
6410 assert_eq!(
6411 view.selected_display_ranges(cx),
6412 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
6413 );
6414
6415 // Ensure that indenting/outdenting works when the cursor is at column 0.
6416 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
6417 view.tab(&Tab, cx);
6418 assert_eq!(view.text(cx), "one two\n three\n four");
6419 assert_eq!(
6420 view.selected_display_ranges(cx),
6421 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
6422 );
6423
6424 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
6425 view.outdent(&Outdent, cx);
6426 assert_eq!(view.text(cx), "one two\nthree\n four");
6427 assert_eq!(
6428 view.selected_display_ranges(cx),
6429 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6430 );
6431 });
6432 }
6433
6434 #[gpui::test]
6435 fn test_backspace(cx: &mut gpui::MutableAppContext) {
6436 let buffer =
6437 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
6438 let settings = EditorSettings::test(&cx);
6439 let (_, view) = cx.add_window(Default::default(), |cx| {
6440 build_editor(buffer.clone(), settings, cx)
6441 });
6442
6443 view.update(cx, |view, cx| {
6444 view.select_display_ranges(
6445 &[
6446 // an empty selection - the preceding character is deleted
6447 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6448 // one character selected - it is deleted
6449 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
6450 // a line suffix selected - it is deleted
6451 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
6452 ],
6453 cx,
6454 );
6455 view.backspace(&Backspace, cx);
6456 });
6457
6458 assert_eq!(
6459 buffer.read(cx).read(cx).text(),
6460 "oe two three\nfou five six\nseven ten\n"
6461 );
6462 }
6463
6464 #[gpui::test]
6465 fn test_delete(cx: &mut gpui::MutableAppContext) {
6466 let buffer =
6467 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
6468 let settings = EditorSettings::test(&cx);
6469 let (_, view) = cx.add_window(Default::default(), |cx| {
6470 build_editor(buffer.clone(), settings, cx)
6471 });
6472
6473 view.update(cx, |view, cx| {
6474 view.select_display_ranges(
6475 &[
6476 // an empty selection - the following character is deleted
6477 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6478 // one character selected - it is deleted
6479 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
6480 // a line suffix selected - it is deleted
6481 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
6482 ],
6483 cx,
6484 );
6485 view.delete(&Delete, cx);
6486 });
6487
6488 assert_eq!(
6489 buffer.read(cx).read(cx).text(),
6490 "on two three\nfou five six\nseven ten\n"
6491 );
6492 }
6493
6494 #[gpui::test]
6495 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
6496 let settings = EditorSettings::test(&cx);
6497 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
6498 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6499 view.update(cx, |view, cx| {
6500 view.select_display_ranges(
6501 &[
6502 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6503 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
6504 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6505 ],
6506 cx,
6507 );
6508 view.delete_line(&DeleteLine, cx);
6509 assert_eq!(view.display_text(cx), "ghi");
6510 assert_eq!(
6511 view.selected_display_ranges(cx),
6512 vec![
6513 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6514 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
6515 ]
6516 );
6517 });
6518
6519 let settings = EditorSettings::test(&cx);
6520 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
6521 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6522 view.update(cx, |view, cx| {
6523 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx);
6524 view.delete_line(&DeleteLine, cx);
6525 assert_eq!(view.display_text(cx), "ghi\n");
6526 assert_eq!(
6527 view.selected_display_ranges(cx),
6528 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
6529 );
6530 });
6531 }
6532
6533 #[gpui::test]
6534 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
6535 let settings = EditorSettings::test(&cx);
6536 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
6537 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6538 view.update(cx, |view, cx| {
6539 view.select_display_ranges(
6540 &[
6541 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
6542 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6543 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6544 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6545 ],
6546 cx,
6547 );
6548 view.duplicate_line(&DuplicateLine, cx);
6549 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
6550 assert_eq!(
6551 view.selected_display_ranges(cx),
6552 vec![
6553 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
6554 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6555 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6556 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
6557 ]
6558 );
6559 });
6560
6561 let settings = EditorSettings::test(&cx);
6562 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
6563 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6564 view.update(cx, |view, cx| {
6565 view.select_display_ranges(
6566 &[
6567 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
6568 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
6569 ],
6570 cx,
6571 );
6572 view.duplicate_line(&DuplicateLine, cx);
6573 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
6574 assert_eq!(
6575 view.selected_display_ranges(cx),
6576 vec![
6577 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
6578 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
6579 ]
6580 );
6581 });
6582 }
6583
6584 #[gpui::test]
6585 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
6586 let settings = EditorSettings::test(&cx);
6587 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
6588 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6589 view.update(cx, |view, cx| {
6590 view.fold_ranges(
6591 vec![
6592 Point::new(0, 2)..Point::new(1, 2),
6593 Point::new(2, 3)..Point::new(4, 1),
6594 Point::new(7, 0)..Point::new(8, 4),
6595 ],
6596 cx,
6597 );
6598 view.select_display_ranges(
6599 &[
6600 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6601 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
6602 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
6603 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
6604 ],
6605 cx,
6606 );
6607 assert_eq!(
6608 view.display_text(cx),
6609 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
6610 );
6611
6612 view.move_line_up(&MoveLineUp, cx);
6613 assert_eq!(
6614 view.display_text(cx),
6615 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
6616 );
6617 assert_eq!(
6618 view.selected_display_ranges(cx),
6619 vec![
6620 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6621 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6622 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
6623 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
6624 ]
6625 );
6626 });
6627
6628 view.update(cx, |view, cx| {
6629 view.move_line_down(&MoveLineDown, cx);
6630 assert_eq!(
6631 view.display_text(cx),
6632 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
6633 );
6634 assert_eq!(
6635 view.selected_display_ranges(cx),
6636 vec![
6637 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6638 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
6639 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
6640 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
6641 ]
6642 );
6643 });
6644
6645 view.update(cx, |view, cx| {
6646 view.move_line_down(&MoveLineDown, cx);
6647 assert_eq!(
6648 view.display_text(cx),
6649 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
6650 );
6651 assert_eq!(
6652 view.selected_display_ranges(cx),
6653 vec![
6654 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6655 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
6656 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
6657 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
6658 ]
6659 );
6660 });
6661
6662 view.update(cx, |view, cx| {
6663 view.move_line_up(&MoveLineUp, cx);
6664 assert_eq!(
6665 view.display_text(cx),
6666 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
6667 );
6668 assert_eq!(
6669 view.selected_display_ranges(cx),
6670 vec![
6671 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6672 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6673 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
6674 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
6675 ]
6676 );
6677 });
6678 }
6679
6680 #[gpui::test]
6681 fn test_move_line_up_down_with_blocks(cx: &mut gpui::MutableAppContext) {
6682 let settings = EditorSettings::test(&cx);
6683 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
6684 let snapshot = buffer.read(cx).snapshot(cx);
6685 let (_, editor) =
6686 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6687 editor.update(cx, |editor, cx| {
6688 editor.insert_blocks(
6689 [BlockProperties {
6690 position: snapshot.anchor_after(Point::new(2, 0)),
6691 disposition: BlockDisposition::Below,
6692 height: 1,
6693 render: Arc::new(|_| Empty::new().boxed()),
6694 }],
6695 cx,
6696 );
6697 editor.select_ranges([Point::new(2, 0)..Point::new(2, 0)], None, cx);
6698 editor.move_line_down(&MoveLineDown, cx);
6699 });
6700 }
6701
6702 #[gpui::test]
6703 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
6704 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
6705 let settings = EditorSettings::test(&cx);
6706 let view = cx
6707 .add_window(Default::default(), |cx| {
6708 build_editor(buffer.clone(), settings, cx)
6709 })
6710 .1;
6711
6712 // Cut with three selections. Clipboard text is divided into three slices.
6713 view.update(cx, |view, cx| {
6714 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
6715 view.cut(&Cut, cx);
6716 assert_eq!(view.display_text(cx), "two four six ");
6717 });
6718
6719 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
6720 view.update(cx, |view, cx| {
6721 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
6722 view.paste(&Paste, cx);
6723 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
6724 assert_eq!(
6725 view.selected_display_ranges(cx),
6726 &[
6727 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
6728 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
6729 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
6730 ]
6731 );
6732 });
6733
6734 // Paste again but with only two cursors. Since the number of cursors doesn't
6735 // match the number of slices in the clipboard, the entire clipboard text
6736 // is pasted at each cursor.
6737 view.update(cx, |view, cx| {
6738 view.select_ranges(vec![0..0, 31..31], None, cx);
6739 view.handle_input(&Input("( ".into()), cx);
6740 view.paste(&Paste, cx);
6741 view.handle_input(&Input(") ".into()), cx);
6742 assert_eq!(
6743 view.display_text(cx),
6744 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
6745 );
6746 });
6747
6748 view.update(cx, |view, cx| {
6749 view.select_ranges(vec![0..0], None, cx);
6750 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
6751 assert_eq!(
6752 view.display_text(cx),
6753 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
6754 );
6755 });
6756
6757 // Cut with three selections, one of which is full-line.
6758 view.update(cx, |view, cx| {
6759 view.select_display_ranges(
6760 &[
6761 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
6762 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6763 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
6764 ],
6765 cx,
6766 );
6767 view.cut(&Cut, cx);
6768 assert_eq!(
6769 view.display_text(cx),
6770 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
6771 );
6772 });
6773
6774 // Paste with three selections, noticing how the copied selection that was full-line
6775 // gets inserted before the second cursor.
6776 view.update(cx, |view, cx| {
6777 view.select_display_ranges(
6778 &[
6779 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6780 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6781 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
6782 ],
6783 cx,
6784 );
6785 view.paste(&Paste, cx);
6786 assert_eq!(
6787 view.display_text(cx),
6788 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
6789 );
6790 assert_eq!(
6791 view.selected_display_ranges(cx),
6792 &[
6793 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6794 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6795 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
6796 ]
6797 );
6798 });
6799
6800 // Copy with a single cursor only, which writes the whole line into the clipboard.
6801 view.update(cx, |view, cx| {
6802 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx);
6803 view.copy(&Copy, cx);
6804 });
6805
6806 // Paste with three selections, noticing how the copied full-line selection is inserted
6807 // before the empty selections but replaces the selection that is non-empty.
6808 view.update(cx, |view, cx| {
6809 view.select_display_ranges(
6810 &[
6811 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6812 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
6813 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6814 ],
6815 cx,
6816 );
6817 view.paste(&Paste, cx);
6818 assert_eq!(
6819 view.display_text(cx),
6820 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
6821 );
6822 assert_eq!(
6823 view.selected_display_ranges(cx),
6824 &[
6825 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6826 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6827 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
6828 ]
6829 );
6830 });
6831 }
6832
6833 #[gpui::test]
6834 fn test_select_all(cx: &mut gpui::MutableAppContext) {
6835 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
6836 let settings = EditorSettings::test(&cx);
6837 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6838 view.update(cx, |view, cx| {
6839 view.select_all(&SelectAll, cx);
6840 assert_eq!(
6841 view.selected_display_ranges(cx),
6842 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
6843 );
6844 });
6845 }
6846
6847 #[gpui::test]
6848 fn test_select_line(cx: &mut gpui::MutableAppContext) {
6849 let settings = EditorSettings::test(&cx);
6850 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
6851 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6852 view.update(cx, |view, cx| {
6853 view.select_display_ranges(
6854 &[
6855 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
6856 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6857 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6858 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
6859 ],
6860 cx,
6861 );
6862 view.select_line(&SelectLine, cx);
6863 assert_eq!(
6864 view.selected_display_ranges(cx),
6865 vec![
6866 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
6867 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
6868 ]
6869 );
6870 });
6871
6872 view.update(cx, |view, cx| {
6873 view.select_line(&SelectLine, cx);
6874 assert_eq!(
6875 view.selected_display_ranges(cx),
6876 vec![
6877 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
6878 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
6879 ]
6880 );
6881 });
6882
6883 view.update(cx, |view, cx| {
6884 view.select_line(&SelectLine, cx);
6885 assert_eq!(
6886 view.selected_display_ranges(cx),
6887 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
6888 );
6889 });
6890 }
6891
6892 #[gpui::test]
6893 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
6894 let settings = EditorSettings::test(&cx);
6895 let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
6896 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6897 view.update(cx, |view, cx| {
6898 view.fold_ranges(
6899 vec![
6900 Point::new(0, 2)..Point::new(1, 2),
6901 Point::new(2, 3)..Point::new(4, 1),
6902 Point::new(7, 0)..Point::new(8, 4),
6903 ],
6904 cx,
6905 );
6906 view.select_display_ranges(
6907 &[
6908 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
6909 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6910 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6911 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
6912 ],
6913 cx,
6914 );
6915 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
6916 });
6917
6918 view.update(cx, |view, cx| {
6919 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
6920 assert_eq!(
6921 view.display_text(cx),
6922 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
6923 );
6924 assert_eq!(
6925 view.selected_display_ranges(cx),
6926 [
6927 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6928 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6929 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
6930 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
6931 ]
6932 );
6933 });
6934
6935 view.update(cx, |view, cx| {
6936 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx);
6937 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
6938 assert_eq!(
6939 view.display_text(cx),
6940 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
6941 );
6942 assert_eq!(
6943 view.selected_display_ranges(cx),
6944 [
6945 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
6946 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6947 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
6948 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
6949 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
6950 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
6951 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
6952 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
6953 ]
6954 );
6955 });
6956 }
6957
6958 #[gpui::test]
6959 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
6960 let settings = EditorSettings::test(&cx);
6961 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
6962 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6963
6964 view.update(cx, |view, cx| {
6965 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx);
6966 });
6967 view.update(cx, |view, cx| {
6968 view.add_selection_above(&AddSelectionAbove, cx);
6969 assert_eq!(
6970 view.selected_display_ranges(cx),
6971 vec![
6972 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6973 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
6974 ]
6975 );
6976 });
6977
6978 view.update(cx, |view, cx| {
6979 view.add_selection_above(&AddSelectionAbove, cx);
6980 assert_eq!(
6981 view.selected_display_ranges(cx),
6982 vec![
6983 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6984 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
6985 ]
6986 );
6987 });
6988
6989 view.update(cx, |view, cx| {
6990 view.add_selection_below(&AddSelectionBelow, cx);
6991 assert_eq!(
6992 view.selected_display_ranges(cx),
6993 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
6994 );
6995 });
6996
6997 view.update(cx, |view, cx| {
6998 view.add_selection_below(&AddSelectionBelow, cx);
6999 assert_eq!(
7000 view.selected_display_ranges(cx),
7001 vec![
7002 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7003 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
7004 ]
7005 );
7006 });
7007
7008 view.update(cx, |view, cx| {
7009 view.add_selection_below(&AddSelectionBelow, cx);
7010 assert_eq!(
7011 view.selected_display_ranges(cx),
7012 vec![
7013 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7014 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
7015 ]
7016 );
7017 });
7018
7019 view.update(cx, |view, cx| {
7020 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx);
7021 });
7022 view.update(cx, |view, cx| {
7023 view.add_selection_below(&AddSelectionBelow, cx);
7024 assert_eq!(
7025 view.selected_display_ranges(cx),
7026 vec![
7027 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7028 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
7029 ]
7030 );
7031 });
7032
7033 view.update(cx, |view, cx| {
7034 view.add_selection_below(&AddSelectionBelow, cx);
7035 assert_eq!(
7036 view.selected_display_ranges(cx),
7037 vec![
7038 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7039 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
7040 ]
7041 );
7042 });
7043
7044 view.update(cx, |view, cx| {
7045 view.add_selection_above(&AddSelectionAbove, cx);
7046 assert_eq!(
7047 view.selected_display_ranges(cx),
7048 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
7049 );
7050 });
7051
7052 view.update(cx, |view, cx| {
7053 view.add_selection_above(&AddSelectionAbove, cx);
7054 assert_eq!(
7055 view.selected_display_ranges(cx),
7056 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
7057 );
7058 });
7059
7060 view.update(cx, |view, cx| {
7061 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx);
7062 view.add_selection_below(&AddSelectionBelow, cx);
7063 assert_eq!(
7064 view.selected_display_ranges(cx),
7065 vec![
7066 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7067 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7068 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7069 ]
7070 );
7071 });
7072
7073 view.update(cx, |view, cx| {
7074 view.add_selection_below(&AddSelectionBelow, cx);
7075 assert_eq!(
7076 view.selected_display_ranges(cx),
7077 vec![
7078 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7079 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7080 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7081 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
7082 ]
7083 );
7084 });
7085
7086 view.update(cx, |view, cx| {
7087 view.add_selection_above(&AddSelectionAbove, cx);
7088 assert_eq!(
7089 view.selected_display_ranges(cx),
7090 vec![
7091 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7092 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7093 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7094 ]
7095 );
7096 });
7097
7098 view.update(cx, |view, cx| {
7099 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx);
7100 });
7101 view.update(cx, |view, cx| {
7102 view.add_selection_above(&AddSelectionAbove, cx);
7103 assert_eq!(
7104 view.selected_display_ranges(cx),
7105 vec![
7106 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
7107 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
7108 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
7109 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
7110 ]
7111 );
7112 });
7113
7114 view.update(cx, |view, cx| {
7115 view.add_selection_below(&AddSelectionBelow, cx);
7116 assert_eq!(
7117 view.selected_display_ranges(cx),
7118 vec![
7119 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
7120 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
7121 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
7122 ]
7123 );
7124 });
7125 }
7126
7127 #[gpui::test]
7128 async fn test_select_larger_smaller_syntax_node(mut cx: gpui::TestAppContext) {
7129 let settings = cx.read(EditorSettings::test);
7130 let language = Arc::new(Language::new(
7131 LanguageConfig::default(),
7132 Some(tree_sitter_rust::language()),
7133 ));
7134
7135 let text = r#"
7136 use mod1::mod2::{mod3, mod4};
7137
7138 fn fn_1(param1: bool, param2: &str) {
7139 let var1 = "text";
7140 }
7141 "#
7142 .unindent();
7143
7144 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7145 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7146 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7147 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
7148 .await;
7149
7150 view.update(&mut cx, |view, cx| {
7151 view.select_display_ranges(
7152 &[
7153 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7154 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7155 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7156 ],
7157 cx,
7158 );
7159 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7160 });
7161 assert_eq!(
7162 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7163 &[
7164 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
7165 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7166 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
7167 ]
7168 );
7169
7170 view.update(&mut cx, |view, cx| {
7171 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7172 });
7173 assert_eq!(
7174 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7175 &[
7176 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
7177 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
7178 ]
7179 );
7180
7181 view.update(&mut cx, |view, cx| {
7182 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7183 });
7184 assert_eq!(
7185 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7186 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
7187 );
7188
7189 // Trying to expand the selected syntax node one more time has no effect.
7190 view.update(&mut cx, |view, cx| {
7191 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7192 });
7193 assert_eq!(
7194 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7195 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
7196 );
7197
7198 view.update(&mut cx, |view, cx| {
7199 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7200 });
7201 assert_eq!(
7202 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7203 &[
7204 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
7205 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
7206 ]
7207 );
7208
7209 view.update(&mut cx, |view, cx| {
7210 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7211 });
7212 assert_eq!(
7213 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7214 &[
7215 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
7216 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7217 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
7218 ]
7219 );
7220
7221 view.update(&mut cx, |view, cx| {
7222 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7223 });
7224 assert_eq!(
7225 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7226 &[
7227 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7228 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7229 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7230 ]
7231 );
7232
7233 // Trying to shrink the selected syntax node one more time has no effect.
7234 view.update(&mut cx, |view, cx| {
7235 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7236 });
7237 assert_eq!(
7238 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7239 &[
7240 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7241 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7242 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7243 ]
7244 );
7245
7246 // Ensure that we keep expanding the selection if the larger selection starts or ends within
7247 // a fold.
7248 view.update(&mut cx, |view, cx| {
7249 view.fold_ranges(
7250 vec![
7251 Point::new(0, 21)..Point::new(0, 24),
7252 Point::new(3, 20)..Point::new(3, 22),
7253 ],
7254 cx,
7255 );
7256 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7257 });
7258 assert_eq!(
7259 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7260 &[
7261 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
7262 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7263 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
7264 ]
7265 );
7266 }
7267
7268 #[gpui::test]
7269 async fn test_autoindent_selections(mut cx: gpui::TestAppContext) {
7270 let settings = cx.read(EditorSettings::test);
7271 let language = Arc::new(
7272 Language::new(
7273 LanguageConfig {
7274 brackets: vec![
7275 BracketPair {
7276 start: "{".to_string(),
7277 end: "}".to_string(),
7278 close: false,
7279 newline: true,
7280 },
7281 BracketPair {
7282 start: "(".to_string(),
7283 end: ")".to_string(),
7284 close: false,
7285 newline: true,
7286 },
7287 ],
7288 ..Default::default()
7289 },
7290 Some(tree_sitter_rust::language()),
7291 )
7292 .with_indents_query(
7293 r#"
7294 (_ "(" ")" @end) @indent
7295 (_ "{" "}" @end) @indent
7296 "#,
7297 )
7298 .unwrap(),
7299 );
7300
7301 let text = "fn a() {}";
7302
7303 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7304 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7305 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7306 editor
7307 .condition(&cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
7308 .await;
7309
7310 editor.update(&mut cx, |editor, cx| {
7311 editor.select_ranges([5..5, 8..8, 9..9], None, cx);
7312 editor.newline(&Newline, cx);
7313 assert_eq!(editor.text(cx), "fn a(\n \n) {\n \n}\n");
7314 assert_eq!(
7315 editor.selected_ranges(cx),
7316 &[
7317 Point::new(1, 4)..Point::new(1, 4),
7318 Point::new(3, 4)..Point::new(3, 4),
7319 Point::new(5, 0)..Point::new(5, 0)
7320 ]
7321 );
7322 });
7323 }
7324
7325 #[gpui::test]
7326 async fn test_autoclose_pairs(mut cx: gpui::TestAppContext) {
7327 let settings = cx.read(EditorSettings::test);
7328 let language = Arc::new(Language::new(
7329 LanguageConfig {
7330 brackets: vec![
7331 BracketPair {
7332 start: "{".to_string(),
7333 end: "}".to_string(),
7334 close: true,
7335 newline: true,
7336 },
7337 BracketPair {
7338 start: "/*".to_string(),
7339 end: " */".to_string(),
7340 close: true,
7341 newline: true,
7342 },
7343 ],
7344 ..Default::default()
7345 },
7346 Some(tree_sitter_rust::language()),
7347 ));
7348
7349 let text = r#"
7350 a
7351
7352 /
7353
7354 "#
7355 .unindent();
7356
7357 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7358 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7359 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7360 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
7361 .await;
7362
7363 view.update(&mut cx, |view, cx| {
7364 view.select_display_ranges(
7365 &[
7366 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7367 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7368 ],
7369 cx,
7370 );
7371 view.handle_input(&Input("{".to_string()), cx);
7372 view.handle_input(&Input("{".to_string()), cx);
7373 view.handle_input(&Input("{".to_string()), cx);
7374 assert_eq!(
7375 view.text(cx),
7376 "
7377 {{{}}}
7378 {{{}}}
7379 /
7380
7381 "
7382 .unindent()
7383 );
7384
7385 view.move_right(&MoveRight, cx);
7386 view.handle_input(&Input("}".to_string()), cx);
7387 view.handle_input(&Input("}".to_string()), cx);
7388 view.handle_input(&Input("}".to_string()), cx);
7389 assert_eq!(
7390 view.text(cx),
7391 "
7392 {{{}}}}
7393 {{{}}}}
7394 /
7395
7396 "
7397 .unindent()
7398 );
7399
7400 view.undo(&Undo, cx);
7401 view.handle_input(&Input("/".to_string()), cx);
7402 view.handle_input(&Input("*".to_string()), cx);
7403 assert_eq!(
7404 view.text(cx),
7405 "
7406 /* */
7407 /* */
7408 /
7409
7410 "
7411 .unindent()
7412 );
7413
7414 view.undo(&Undo, cx);
7415 view.select_display_ranges(
7416 &[
7417 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7418 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7419 ],
7420 cx,
7421 );
7422 view.handle_input(&Input("*".to_string()), cx);
7423 assert_eq!(
7424 view.text(cx),
7425 "
7426 a
7427
7428 /*
7429 *
7430 "
7431 .unindent()
7432 );
7433 });
7434 }
7435
7436 #[gpui::test]
7437 async fn test_snippets(mut cx: gpui::TestAppContext) {
7438 let settings = cx.read(EditorSettings::test);
7439
7440 let text = "
7441 a. b
7442 a. b
7443 a. b
7444 "
7445 .unindent();
7446 let buffer = cx.update(|cx| MultiBuffer::build_simple(&text, cx));
7447 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7448
7449 editor.update(&mut cx, |editor, cx| {
7450 let buffer = &editor.snapshot(cx).buffer_snapshot;
7451 let snippet = Snippet::parse("f(${1:one}, ${2:two}, ${1:three})$0").unwrap();
7452 let insertion_ranges = [
7453 Point::new(0, 2).to_offset(buffer)..Point::new(0, 2).to_offset(buffer),
7454 Point::new(1, 2).to_offset(buffer)..Point::new(1, 2).to_offset(buffer),
7455 Point::new(2, 2).to_offset(buffer)..Point::new(2, 2).to_offset(buffer),
7456 ];
7457
7458 editor
7459 .insert_snippet(&insertion_ranges, snippet, cx)
7460 .unwrap();
7461 assert_eq!(
7462 editor.text(cx),
7463 "
7464 a.f(one, two, three) b
7465 a.f(one, two, three) b
7466 a.f(one, two, three) b
7467 "
7468 .unindent()
7469 );
7470 assert_eq!(
7471 editor.selected_ranges::<Point>(cx),
7472 &[
7473 Point::new(0, 4)..Point::new(0, 7),
7474 Point::new(0, 14)..Point::new(0, 19),
7475 Point::new(1, 4)..Point::new(1, 7),
7476 Point::new(1, 14)..Point::new(1, 19),
7477 Point::new(2, 4)..Point::new(2, 7),
7478 Point::new(2, 14)..Point::new(2, 19),
7479 ]
7480 );
7481
7482 // Can't move earlier than the first tab stop
7483 editor.move_to_prev_snippet_tabstop(cx);
7484 assert_eq!(
7485 editor.selected_ranges::<Point>(cx),
7486 &[
7487 Point::new(0, 4)..Point::new(0, 7),
7488 Point::new(0, 14)..Point::new(0, 19),
7489 Point::new(1, 4)..Point::new(1, 7),
7490 Point::new(1, 14)..Point::new(1, 19),
7491 Point::new(2, 4)..Point::new(2, 7),
7492 Point::new(2, 14)..Point::new(2, 19),
7493 ]
7494 );
7495
7496 assert!(editor.move_to_next_snippet_tabstop(cx));
7497 assert_eq!(
7498 editor.selected_ranges::<Point>(cx),
7499 &[
7500 Point::new(0, 9)..Point::new(0, 12),
7501 Point::new(1, 9)..Point::new(1, 12),
7502 Point::new(2, 9)..Point::new(2, 12)
7503 ]
7504 );
7505
7506 editor.move_to_prev_snippet_tabstop(cx);
7507 assert_eq!(
7508 editor.selected_ranges::<Point>(cx),
7509 &[
7510 Point::new(0, 4)..Point::new(0, 7),
7511 Point::new(0, 14)..Point::new(0, 19),
7512 Point::new(1, 4)..Point::new(1, 7),
7513 Point::new(1, 14)..Point::new(1, 19),
7514 Point::new(2, 4)..Point::new(2, 7),
7515 Point::new(2, 14)..Point::new(2, 19),
7516 ]
7517 );
7518
7519 assert!(editor.move_to_next_snippet_tabstop(cx));
7520 assert!(editor.move_to_next_snippet_tabstop(cx));
7521 assert_eq!(
7522 editor.selected_ranges::<Point>(cx),
7523 &[
7524 Point::new(0, 20)..Point::new(0, 20),
7525 Point::new(1, 20)..Point::new(1, 20),
7526 Point::new(2, 20)..Point::new(2, 20)
7527 ]
7528 );
7529
7530 // As soon as the last tab stop is reached, snippet state is gone
7531 editor.move_to_prev_snippet_tabstop(cx);
7532 assert_eq!(
7533 editor.selected_ranges::<Point>(cx),
7534 &[
7535 Point::new(0, 20)..Point::new(0, 20),
7536 Point::new(1, 20)..Point::new(1, 20),
7537 Point::new(2, 20)..Point::new(2, 20)
7538 ]
7539 );
7540 });
7541 }
7542
7543 #[gpui::test]
7544 async fn test_completion(mut cx: gpui::TestAppContext) {
7545 let settings = cx.read(EditorSettings::test);
7546 let (language_server, mut fake) = lsp::LanguageServer::fake_with_capabilities(
7547 lsp::ServerCapabilities {
7548 completion_provider: Some(lsp::CompletionOptions {
7549 trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
7550 ..Default::default()
7551 }),
7552 ..Default::default()
7553 },
7554 &cx,
7555 )
7556 .await;
7557
7558 let text = "
7559 one
7560 two
7561 three
7562 "
7563 .unindent();
7564
7565 let fs = Arc::new(FakeFs::new(cx.background().clone()));
7566 fs.insert_file("/file", text).await.unwrap();
7567
7568 let project = Project::test(fs, &mut cx);
7569
7570 let (worktree, relative_path) = project
7571 .update(&mut cx, |project, cx| {
7572 project.find_or_create_local_worktree("/file", false, cx)
7573 })
7574 .await
7575 .unwrap();
7576 let project_path = ProjectPath {
7577 worktree_id: worktree.read_with(&cx, |worktree, _| worktree.id()),
7578 path: relative_path.into(),
7579 };
7580 let buffer = project
7581 .update(&mut cx, |project, cx| project.open_buffer(project_path, cx))
7582 .await
7583 .unwrap();
7584 buffer.update(&mut cx, |buffer, cx| {
7585 buffer.set_language_server(Some(language_server), cx);
7586 });
7587
7588 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7589 buffer.next_notification(&cx).await;
7590
7591 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7592
7593 editor.update(&mut cx, |editor, cx| {
7594 editor.project = Some(project);
7595 editor.select_ranges([Point::new(0, 3)..Point::new(0, 3)], None, cx);
7596 editor.handle_input(&Input(".".to_string()), cx);
7597 });
7598
7599 handle_completion_request(
7600 &mut fake,
7601 "/file",
7602 Point::new(0, 4),
7603 &[
7604 (Point::new(0, 4)..Point::new(0, 4), "first_completion"),
7605 (Point::new(0, 4)..Point::new(0, 4), "second_completion"),
7606 ],
7607 )
7608 .await;
7609 editor.next_notification(&cx).await;
7610
7611 let apply_additional_edits = editor.update(&mut cx, |editor, cx| {
7612 editor.move_down(&MoveDown, cx);
7613 let apply_additional_edits = editor
7614 .confirm_completion(&ConfirmCompletion(None), cx)
7615 .unwrap();
7616 assert_eq!(
7617 editor.text(cx),
7618 "
7619 one.second_completion
7620 two
7621 three
7622 "
7623 .unindent()
7624 );
7625 apply_additional_edits
7626 });
7627
7628 handle_resolve_completion_request(
7629 &mut fake,
7630 Some((Point::new(2, 5)..Point::new(2, 5), "\nadditional edit")),
7631 )
7632 .await;
7633 apply_additional_edits.await.unwrap();
7634 assert_eq!(
7635 editor.read_with(&cx, |editor, cx| editor.text(cx)),
7636 "
7637 one.second_completion
7638 two
7639 three
7640 additional edit
7641 "
7642 .unindent()
7643 );
7644
7645 editor.update(&mut cx, |editor, cx| {
7646 editor.select_ranges(
7647 [
7648 Point::new(1, 3)..Point::new(1, 3),
7649 Point::new(2, 5)..Point::new(2, 5),
7650 ],
7651 None,
7652 cx,
7653 );
7654
7655 editor.handle_input(&Input(" ".to_string()), cx);
7656 assert!(editor.context_menu.is_none());
7657 editor.handle_input(&Input("s".to_string()), cx);
7658 assert!(editor.context_menu.is_none());
7659 });
7660
7661 handle_completion_request(
7662 &mut fake,
7663 "/file",
7664 Point::new(2, 7),
7665 &[
7666 (Point::new(2, 6)..Point::new(2, 7), "fourth_completion"),
7667 (Point::new(2, 6)..Point::new(2, 7), "fifth_completion"),
7668 (Point::new(2, 6)..Point::new(2, 7), "sixth_completion"),
7669 ],
7670 )
7671 .await;
7672 editor
7673 .condition(&cx, |editor, _| editor.context_menu.is_some())
7674 .await;
7675
7676 editor.update(&mut cx, |editor, cx| {
7677 editor.handle_input(&Input("i".to_string()), cx);
7678 });
7679
7680 handle_completion_request(
7681 &mut fake,
7682 "/file",
7683 Point::new(2, 8),
7684 &[
7685 (Point::new(2, 6)..Point::new(2, 8), "fourth_completion"),
7686 (Point::new(2, 6)..Point::new(2, 8), "fifth_completion"),
7687 (Point::new(2, 6)..Point::new(2, 8), "sixth_completion"),
7688 ],
7689 )
7690 .await;
7691 editor.next_notification(&cx).await;
7692
7693 let apply_additional_edits = editor.update(&mut cx, |editor, cx| {
7694 let apply_additional_edits = editor
7695 .confirm_completion(&ConfirmCompletion(None), cx)
7696 .unwrap();
7697 assert_eq!(
7698 editor.text(cx),
7699 "
7700 one.second_completion
7701 two sixth_completion
7702 three sixth_completion
7703 additional edit
7704 "
7705 .unindent()
7706 );
7707 apply_additional_edits
7708 });
7709 handle_resolve_completion_request(&mut fake, None).await;
7710 apply_additional_edits.await.unwrap();
7711
7712 async fn handle_completion_request(
7713 fake: &mut FakeLanguageServer,
7714 path: &str,
7715 position: Point,
7716 completions: &[(Range<Point>, &str)],
7717 ) {
7718 let (id, params) = fake.receive_request::<lsp::request::Completion>().await;
7719 assert_eq!(
7720 params.text_document_position.text_document.uri,
7721 lsp::Url::from_file_path(path).unwrap()
7722 );
7723 assert_eq!(
7724 params.text_document_position.position,
7725 lsp::Position::new(position.row, position.column)
7726 );
7727
7728 let completions = completions
7729 .iter()
7730 .map(|(range, new_text)| lsp::CompletionItem {
7731 label: new_text.to_string(),
7732 text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
7733 range: lsp::Range::new(
7734 lsp::Position::new(range.start.row, range.start.column),
7735 lsp::Position::new(range.start.row, range.start.column),
7736 ),
7737 new_text: new_text.to_string(),
7738 })),
7739 ..Default::default()
7740 })
7741 .collect();
7742 fake.respond(id, Some(lsp::CompletionResponse::Array(completions)))
7743 .await;
7744 }
7745
7746 async fn handle_resolve_completion_request(
7747 fake: &mut FakeLanguageServer,
7748 edit: Option<(Range<Point>, &str)>,
7749 ) {
7750 let (id, _) = fake
7751 .receive_request::<lsp::request::ResolveCompletionItem>()
7752 .await;
7753 fake.respond(
7754 id,
7755 lsp::CompletionItem {
7756 additional_text_edits: edit.map(|(range, new_text)| {
7757 vec![lsp::TextEdit::new(
7758 lsp::Range::new(
7759 lsp::Position::new(range.start.row, range.start.column),
7760 lsp::Position::new(range.end.row, range.end.column),
7761 ),
7762 new_text.to_string(),
7763 )]
7764 }),
7765 ..Default::default()
7766 },
7767 )
7768 .await;
7769 }
7770 }
7771
7772 #[gpui::test]
7773 async fn test_toggle_comment(mut cx: gpui::TestAppContext) {
7774 let settings = cx.read(EditorSettings::test);
7775 let language = Arc::new(Language::new(
7776 LanguageConfig {
7777 line_comment: Some("// ".to_string()),
7778 ..Default::default()
7779 },
7780 Some(tree_sitter_rust::language()),
7781 ));
7782
7783 let text = "
7784 fn a() {
7785 //b();
7786 // c();
7787 // d();
7788 }
7789 "
7790 .unindent();
7791
7792 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7793 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7794 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7795
7796 view.update(&mut cx, |editor, cx| {
7797 // If multiple selections intersect a line, the line is only
7798 // toggled once.
7799 editor.select_display_ranges(
7800 &[
7801 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
7802 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
7803 ],
7804 cx,
7805 );
7806 editor.toggle_comments(&ToggleComments, cx);
7807 assert_eq!(
7808 editor.text(cx),
7809 "
7810 fn a() {
7811 b();
7812 c();
7813 d();
7814 }
7815 "
7816 .unindent()
7817 );
7818
7819 // The comment prefix is inserted at the same column for every line
7820 // in a selection.
7821 editor.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx);
7822 editor.toggle_comments(&ToggleComments, cx);
7823 assert_eq!(
7824 editor.text(cx),
7825 "
7826 fn a() {
7827 // b();
7828 // c();
7829 // d();
7830 }
7831 "
7832 .unindent()
7833 );
7834
7835 // If a selection ends at the beginning of a line, that line is not toggled.
7836 editor.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx);
7837 editor.toggle_comments(&ToggleComments, cx);
7838 assert_eq!(
7839 editor.text(cx),
7840 "
7841 fn a() {
7842 // b();
7843 c();
7844 // d();
7845 }
7846 "
7847 .unindent()
7848 );
7849 });
7850 }
7851
7852 #[gpui::test]
7853 fn test_editing_disjoint_excerpts(cx: &mut gpui::MutableAppContext) {
7854 let settings = EditorSettings::test(cx);
7855 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
7856 let multibuffer = cx.add_model(|cx| {
7857 let mut multibuffer = MultiBuffer::new(0);
7858 multibuffer.push_excerpt(
7859 ExcerptProperties {
7860 buffer: &buffer,
7861 range: Point::new(0, 0)..Point::new(0, 4),
7862 },
7863 cx,
7864 );
7865 multibuffer.push_excerpt(
7866 ExcerptProperties {
7867 buffer: &buffer,
7868 range: Point::new(1, 0)..Point::new(1, 4),
7869 },
7870 cx,
7871 );
7872 multibuffer
7873 });
7874
7875 assert_eq!(multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb");
7876
7877 let (_, view) = cx.add_window(Default::default(), |cx| {
7878 build_editor(multibuffer, settings, cx)
7879 });
7880 view.update(cx, |view, cx| {
7881 view.select_display_ranges(
7882 &[
7883 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7884 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7885 ],
7886 cx,
7887 );
7888
7889 view.handle_input(&Input("X".to_string()), cx);
7890 assert_eq!(view.text(cx), "Xaaaa\nXbbbb");
7891 assert_eq!(
7892 view.selected_display_ranges(cx),
7893 &[
7894 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7895 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7896 ]
7897 )
7898 });
7899 }
7900
7901 #[gpui::test]
7902 fn test_editing_overlapping_excerpts(cx: &mut gpui::MutableAppContext) {
7903 let settings = EditorSettings::test(cx);
7904 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
7905 let multibuffer = cx.add_model(|cx| {
7906 let mut multibuffer = MultiBuffer::new(0);
7907 multibuffer.push_excerpt(
7908 ExcerptProperties {
7909 buffer: &buffer,
7910 range: Point::new(0, 0)..Point::new(1, 4),
7911 },
7912 cx,
7913 );
7914 multibuffer.push_excerpt(
7915 ExcerptProperties {
7916 buffer: &buffer,
7917 range: Point::new(1, 0)..Point::new(2, 4),
7918 },
7919 cx,
7920 );
7921 multibuffer
7922 });
7923
7924 assert_eq!(
7925 multibuffer.read(cx).read(cx).text(),
7926 "aaaa\nbbbb\nbbbb\ncccc"
7927 );
7928
7929 let (_, view) = cx.add_window(Default::default(), |cx| {
7930 build_editor(multibuffer, settings, cx)
7931 });
7932 view.update(cx, |view, cx| {
7933 view.select_display_ranges(
7934 &[
7935 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7936 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
7937 ],
7938 cx,
7939 );
7940
7941 view.handle_input(&Input("X".to_string()), cx);
7942 assert_eq!(view.text(cx), "aaaa\nbXbbXb\nbXbbXb\ncccc");
7943 assert_eq!(
7944 view.selected_display_ranges(cx),
7945 &[
7946 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7947 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7948 ]
7949 );
7950
7951 view.newline(&Newline, cx);
7952 assert_eq!(view.text(cx), "aaaa\nbX\nbbX\nb\nbX\nbbX\nb\ncccc");
7953 assert_eq!(
7954 view.selected_display_ranges(cx),
7955 &[
7956 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
7957 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
7958 ]
7959 );
7960 });
7961 }
7962
7963 #[gpui::test]
7964 fn test_refresh_selections(cx: &mut gpui::MutableAppContext) {
7965 let settings = EditorSettings::test(cx);
7966 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
7967 let mut excerpt1_id = None;
7968 let multibuffer = cx.add_model(|cx| {
7969 let mut multibuffer = MultiBuffer::new(0);
7970 excerpt1_id = Some(multibuffer.push_excerpt(
7971 ExcerptProperties {
7972 buffer: &buffer,
7973 range: Point::new(0, 0)..Point::new(1, 4),
7974 },
7975 cx,
7976 ));
7977 multibuffer.push_excerpt(
7978 ExcerptProperties {
7979 buffer: &buffer,
7980 range: Point::new(1, 0)..Point::new(2, 4),
7981 },
7982 cx,
7983 );
7984 multibuffer
7985 });
7986 assert_eq!(
7987 multibuffer.read(cx).read(cx).text(),
7988 "aaaa\nbbbb\nbbbb\ncccc"
7989 );
7990 let (_, editor) = cx.add_window(Default::default(), |cx| {
7991 let mut editor = build_editor(multibuffer.clone(), settings, cx);
7992 editor.select_display_ranges(
7993 &[
7994 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7995 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7996 ],
7997 cx,
7998 );
7999 editor
8000 });
8001
8002 // Refreshing selections is a no-op when excerpts haven't changed.
8003 editor.update(cx, |editor, cx| {
8004 editor.refresh_selections(cx);
8005 assert_eq!(
8006 editor.selected_display_ranges(cx),
8007 [
8008 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
8009 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
8010 ]
8011 );
8012 });
8013
8014 multibuffer.update(cx, |multibuffer, cx| {
8015 multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx);
8016 });
8017 editor.update(cx, |editor, cx| {
8018 // Removing an excerpt causes the first selection to become degenerate.
8019 assert_eq!(
8020 editor.selected_display_ranges(cx),
8021 [
8022 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
8023 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
8024 ]
8025 );
8026
8027 // Refreshing selections will relocate the first selection to the original buffer
8028 // location.
8029 editor.refresh_selections(cx);
8030 assert_eq!(
8031 editor.selected_display_ranges(cx),
8032 [
8033 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
8034 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3)
8035 ]
8036 );
8037 });
8038 }
8039
8040 #[gpui::test]
8041 async fn test_extra_newline_insertion(mut cx: gpui::TestAppContext) {
8042 let settings = cx.read(EditorSettings::test);
8043 let language = Arc::new(Language::new(
8044 LanguageConfig {
8045 brackets: vec![
8046 BracketPair {
8047 start: "{".to_string(),
8048 end: "}".to_string(),
8049 close: true,
8050 newline: true,
8051 },
8052 BracketPair {
8053 start: "/* ".to_string(),
8054 end: " */".to_string(),
8055 close: true,
8056 newline: true,
8057 },
8058 ],
8059 ..Default::default()
8060 },
8061 Some(tree_sitter_rust::language()),
8062 ));
8063
8064 let text = concat!(
8065 "{ }\n", // Suppress rustfmt
8066 " x\n", //
8067 " /* */\n", //
8068 "x\n", //
8069 "{{} }\n", //
8070 );
8071
8072 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8073 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8074 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8075 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
8076 .await;
8077
8078 view.update(&mut cx, |view, cx| {
8079 view.select_display_ranges(
8080 &[
8081 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
8082 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
8083 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
8084 ],
8085 cx,
8086 );
8087 view.newline(&Newline, cx);
8088
8089 assert_eq!(
8090 view.buffer().read(cx).read(cx).text(),
8091 concat!(
8092 "{ \n", // Suppress rustfmt
8093 "\n", //
8094 "}\n", //
8095 " x\n", //
8096 " /* \n", //
8097 " \n", //
8098 " */\n", //
8099 "x\n", //
8100 "{{} \n", //
8101 "}\n", //
8102 )
8103 );
8104 });
8105 }
8106
8107 #[gpui::test]
8108 fn test_highlighted_ranges(cx: &mut gpui::MutableAppContext) {
8109 let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
8110 let settings = EditorSettings::test(&cx);
8111 let (_, editor) = cx.add_window(Default::default(), |cx| {
8112 build_editor(buffer.clone(), settings, cx)
8113 });
8114
8115 editor.update(cx, |editor, cx| {
8116 struct Type1;
8117 struct Type2;
8118
8119 let buffer = buffer.read(cx).snapshot(cx);
8120
8121 let anchor_range = |range: Range<Point>| {
8122 buffer.anchor_after(range.start)..buffer.anchor_after(range.end)
8123 };
8124
8125 editor.highlight_ranges::<Type1>(
8126 vec![
8127 anchor_range(Point::new(2, 1)..Point::new(2, 3)),
8128 anchor_range(Point::new(4, 2)..Point::new(4, 4)),
8129 anchor_range(Point::new(6, 3)..Point::new(6, 5)),
8130 anchor_range(Point::new(8, 4)..Point::new(8, 6)),
8131 ],
8132 Color::red(),
8133 cx,
8134 );
8135 editor.highlight_ranges::<Type2>(
8136 vec![
8137 anchor_range(Point::new(3, 2)..Point::new(3, 5)),
8138 anchor_range(Point::new(5, 3)..Point::new(5, 6)),
8139 anchor_range(Point::new(7, 4)..Point::new(7, 7)),
8140 anchor_range(Point::new(9, 5)..Point::new(9, 8)),
8141 ],
8142 Color::green(),
8143 cx,
8144 );
8145
8146 let snapshot = editor.snapshot(cx);
8147 let mut highlighted_ranges = editor.highlighted_ranges_in_range(
8148 anchor_range(Point::new(3, 4)..Point::new(7, 4)),
8149 &snapshot,
8150 );
8151 // Enforce a consistent ordering based on color without relying on the ordering of the
8152 // highlight's `TypeId` which is non-deterministic.
8153 highlighted_ranges.sort_unstable_by_key(|(_, color)| *color);
8154 assert_eq!(
8155 highlighted_ranges,
8156 &[
8157 (
8158 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 5),
8159 Color::green(),
8160 ),
8161 (
8162 DisplayPoint::new(5, 3)..DisplayPoint::new(5, 6),
8163 Color::green(),
8164 ),
8165 (
8166 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 4),
8167 Color::red(),
8168 ),
8169 (
8170 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
8171 Color::red(),
8172 ),
8173 ]
8174 );
8175 assert_eq!(
8176 editor.highlighted_ranges_in_range(
8177 anchor_range(Point::new(5, 6)..Point::new(6, 4)),
8178 &snapshot,
8179 ),
8180 &[(
8181 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
8182 Color::red(),
8183 )]
8184 );
8185 });
8186 }
8187
8188 #[test]
8189 fn test_combine_syntax_and_fuzzy_match_highlights() {
8190 let string = "abcdefghijklmnop";
8191 let default = HighlightStyle::default();
8192 let syntax_ranges = [
8193 (
8194 0..3,
8195 HighlightStyle {
8196 color: Color::red(),
8197 ..default
8198 },
8199 ),
8200 (
8201 4..8,
8202 HighlightStyle {
8203 color: Color::green(),
8204 ..default
8205 },
8206 ),
8207 ];
8208 let match_indices = [4, 6, 7, 8];
8209 assert_eq!(
8210 combine_syntax_and_fuzzy_match_highlights(
8211 &string,
8212 default,
8213 syntax_ranges.into_iter(),
8214 &match_indices,
8215 ),
8216 &[
8217 (
8218 0..3,
8219 HighlightStyle {
8220 color: Color::red(),
8221 ..default
8222 },
8223 ),
8224 (
8225 4..5,
8226 HighlightStyle {
8227 color: Color::green(),
8228 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
8229 ..default
8230 },
8231 ),
8232 (
8233 5..6,
8234 HighlightStyle {
8235 color: Color::green(),
8236 ..default
8237 },
8238 ),
8239 (
8240 6..8,
8241 HighlightStyle {
8242 color: Color::green(),
8243 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
8244 ..default
8245 },
8246 ),
8247 (
8248 8..9,
8249 HighlightStyle {
8250 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
8251 ..default
8252 },
8253 ),
8254 ]
8255 );
8256 }
8257
8258 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
8259 let point = DisplayPoint::new(row as u32, column as u32);
8260 point..point
8261 }
8262
8263 fn build_editor(
8264 buffer: ModelHandle<MultiBuffer>,
8265 settings: EditorSettings,
8266 cx: &mut ViewContext<Editor>,
8267 ) -> Editor {
8268 Editor::for_buffer(buffer, Arc::new(move |_| settings.clone()), None, cx)
8269 }
8270}
8271
8272trait RangeExt<T> {
8273 fn sorted(&self) -> Range<T>;
8274 fn to_inclusive(&self) -> RangeInclusive<T>;
8275}
8276
8277impl<T: Ord + Clone> RangeExt<T> for Range<T> {
8278 fn sorted(&self) -> Self {
8279 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
8280 }
8281
8282 fn to_inclusive(&self) -> RangeInclusive<T> {
8283 self.start.clone()..=self.end.clone()
8284 }
8285}