1pub mod display_map;
2mod element;
3pub mod items;
4pub mod movement;
5mod multi_buffer;
6
7#[cfg(test)]
8mod test;
9
10use aho_corasick::AhoCorasick;
11use anyhow::Result;
12use clock::ReplicaId;
13use collections::{BTreeMap, Bound, HashMap, HashSet};
14pub use display_map::DisplayPoint;
15use display_map::*;
16pub use element::*;
17use fuzzy::{StringMatch, StringMatchCandidate};
18use gpui::{
19 action,
20 color::Color,
21 elements::*,
22 executor,
23 fonts::{self, HighlightStyle, TextStyle},
24 geometry::vector::{vec2f, Vector2F},
25 keymap::Binding,
26 platform::CursorStyle,
27 text_layout, AppContext, AsyncAppContext, ClipboardItem, Element, ElementBox, Entity,
28 ModelHandle, MutableAppContext, RenderContext, Task, View, ViewContext, ViewHandle,
29 WeakModelHandle, WeakViewHandle,
30};
31use items::{BufferItemHandle, MultiBufferItemHandle};
32use itertools::Itertools as _;
33use language::{
34 AnchorRangeExt as _, BracketPair, Buffer, CodeAction, Completion, CompletionLabel, Diagnostic,
35 DiagnosticSeverity, Language, Point, Selection, SelectionGoal, TransactionId,
36};
37use multi_buffer::MultiBufferChunks;
38pub use multi_buffer::{
39 char_kind, Anchor, AnchorRangeExt, CharKind, ExcerptId, MultiBuffer, MultiBufferSnapshot,
40 ToOffset, ToPoint,
41};
42use ordered_float::OrderedFloat;
43use postage::watch;
44use project::{Project, ProjectTransaction};
45use serde::{Deserialize, Serialize};
46use smallvec::SmallVec;
47use smol::Timer;
48use snippet::Snippet;
49use std::{
50 any::TypeId,
51 cmp::{self, Ordering, Reverse},
52 iter::{self, FromIterator},
53 mem,
54 ops::{Deref, DerefMut, Range, RangeInclusive, Sub},
55 sync::Arc,
56 time::{Duration, Instant},
57};
58pub use sum_tree::Bias;
59use text::rope::TextDimension;
60use theme::{DiagnosticStyle, EditorStyle};
61use util::{post_inc, ResultExt, TryFutureExt};
62use workspace::{ItemNavHistory, PathOpener, Workspace};
63
64const CURSOR_BLINK_INTERVAL: Duration = Duration::from_millis(500);
65const MAX_LINE_LEN: usize = 1024;
66const MIN_NAVIGATION_HISTORY_ROW_DELTA: i64 = 10;
67
68action!(Cancel);
69action!(Backspace);
70action!(Delete);
71action!(Input, String);
72action!(Newline);
73action!(Tab);
74action!(Outdent);
75action!(DeleteLine);
76action!(DeleteToPreviousWordBoundary);
77action!(DeleteToNextWordBoundary);
78action!(DeleteToBeginningOfLine);
79action!(DeleteToEndOfLine);
80action!(CutToEndOfLine);
81action!(DuplicateLine);
82action!(MoveLineUp);
83action!(MoveLineDown);
84action!(Cut);
85action!(Copy);
86action!(Paste);
87action!(Undo);
88action!(Redo);
89action!(MoveUp);
90action!(MoveDown);
91action!(MoveLeft);
92action!(MoveRight);
93action!(MoveToPreviousWordBoundary);
94action!(MoveToNextWordBoundary);
95action!(MoveToBeginningOfLine);
96action!(MoveToEndOfLine);
97action!(MoveToBeginning);
98action!(MoveToEnd);
99action!(SelectUp);
100action!(SelectDown);
101action!(SelectLeft);
102action!(SelectRight);
103action!(SelectToPreviousWordBoundary);
104action!(SelectToNextWordBoundary);
105action!(SelectToBeginningOfLine, bool);
106action!(SelectToEndOfLine, bool);
107action!(SelectToBeginning);
108action!(SelectToEnd);
109action!(SelectAll);
110action!(SelectLine);
111action!(SplitSelectionIntoLines);
112action!(AddSelectionAbove);
113action!(AddSelectionBelow);
114action!(SelectNext, bool);
115action!(ToggleComments);
116action!(SelectLargerSyntaxNode);
117action!(SelectSmallerSyntaxNode);
118action!(MoveToEnclosingBracket);
119action!(ShowNextDiagnostic);
120action!(GoToDefinition);
121action!(Rename);
122action!(ConfirmRename);
123action!(PageUp);
124action!(PageDown);
125action!(Fold);
126action!(Unfold);
127action!(FoldSelectedRanges);
128action!(Scroll, Vector2F);
129action!(Select, SelectPhase);
130action!(ShowCompletions);
131action!(ToggleCodeActions, bool);
132action!(ConfirmCompletion, Option<usize>);
133action!(ConfirmCodeAction, Option<usize>);
134
135pub fn init(cx: &mut MutableAppContext, path_openers: &mut Vec<Box<dyn PathOpener>>) {
136 path_openers.push(Box::new(items::BufferOpener));
137 cx.add_bindings(vec![
138 Binding::new("escape", Cancel, Some("Editor")),
139 Binding::new("backspace", Backspace, Some("Editor")),
140 Binding::new("ctrl-h", Backspace, Some("Editor")),
141 Binding::new("delete", Delete, Some("Editor")),
142 Binding::new("ctrl-d", Delete, Some("Editor")),
143 Binding::new("enter", Newline, Some("Editor && mode == full")),
144 Binding::new(
145 "alt-enter",
146 Input("\n".into()),
147 Some("Editor && mode == auto_height"),
148 ),
149 Binding::new(
150 "enter",
151 ConfirmCompletion(None),
152 Some("Editor && showing_completions"),
153 ),
154 Binding::new(
155 "enter",
156 ConfirmCodeAction(None),
157 Some("Editor && showing_code_actions"),
158 ),
159 Binding::new("enter", ConfirmRename, Some("Editor && renaming")),
160 Binding::new("tab", Tab, Some("Editor")),
161 Binding::new(
162 "tab",
163 ConfirmCompletion(None),
164 Some("Editor && showing_completions"),
165 ),
166 Binding::new("shift-tab", Outdent, Some("Editor")),
167 Binding::new("ctrl-shift-K", DeleteLine, Some("Editor")),
168 Binding::new(
169 "alt-backspace",
170 DeleteToPreviousWordBoundary,
171 Some("Editor"),
172 ),
173 Binding::new("alt-h", DeleteToPreviousWordBoundary, Some("Editor")),
174 Binding::new("alt-delete", DeleteToNextWordBoundary, Some("Editor")),
175 Binding::new("alt-d", DeleteToNextWordBoundary, Some("Editor")),
176 Binding::new("cmd-backspace", DeleteToBeginningOfLine, Some("Editor")),
177 Binding::new("cmd-delete", DeleteToEndOfLine, Some("Editor")),
178 Binding::new("ctrl-k", CutToEndOfLine, Some("Editor")),
179 Binding::new("cmd-shift-D", DuplicateLine, Some("Editor")),
180 Binding::new("ctrl-cmd-up", MoveLineUp, Some("Editor")),
181 Binding::new("ctrl-cmd-down", MoveLineDown, Some("Editor")),
182 Binding::new("cmd-x", Cut, Some("Editor")),
183 Binding::new("cmd-c", Copy, Some("Editor")),
184 Binding::new("cmd-v", Paste, Some("Editor")),
185 Binding::new("cmd-z", Undo, Some("Editor")),
186 Binding::new("cmd-shift-Z", Redo, Some("Editor")),
187 Binding::new("up", MoveUp, Some("Editor")),
188 Binding::new("down", MoveDown, Some("Editor")),
189 Binding::new("left", MoveLeft, Some("Editor")),
190 Binding::new("right", MoveRight, Some("Editor")),
191 Binding::new("ctrl-p", MoveUp, Some("Editor")),
192 Binding::new("ctrl-n", MoveDown, Some("Editor")),
193 Binding::new("ctrl-b", MoveLeft, Some("Editor")),
194 Binding::new("ctrl-f", MoveRight, Some("Editor")),
195 Binding::new("alt-left", MoveToPreviousWordBoundary, Some("Editor")),
196 Binding::new("alt-b", MoveToPreviousWordBoundary, Some("Editor")),
197 Binding::new("alt-right", MoveToNextWordBoundary, Some("Editor")),
198 Binding::new("alt-f", MoveToNextWordBoundary, Some("Editor")),
199 Binding::new("cmd-left", MoveToBeginningOfLine, Some("Editor")),
200 Binding::new("ctrl-a", MoveToBeginningOfLine, Some("Editor")),
201 Binding::new("cmd-right", MoveToEndOfLine, Some("Editor")),
202 Binding::new("ctrl-e", MoveToEndOfLine, Some("Editor")),
203 Binding::new("cmd-up", MoveToBeginning, Some("Editor")),
204 Binding::new("cmd-down", MoveToEnd, Some("Editor")),
205 Binding::new("shift-up", SelectUp, Some("Editor")),
206 Binding::new("ctrl-shift-P", SelectUp, Some("Editor")),
207 Binding::new("shift-down", SelectDown, Some("Editor")),
208 Binding::new("ctrl-shift-N", SelectDown, Some("Editor")),
209 Binding::new("shift-left", SelectLeft, Some("Editor")),
210 Binding::new("ctrl-shift-B", SelectLeft, Some("Editor")),
211 Binding::new("shift-right", SelectRight, Some("Editor")),
212 Binding::new("ctrl-shift-F", SelectRight, Some("Editor")),
213 Binding::new(
214 "alt-shift-left",
215 SelectToPreviousWordBoundary,
216 Some("Editor"),
217 ),
218 Binding::new("alt-shift-B", SelectToPreviousWordBoundary, Some("Editor")),
219 Binding::new("alt-shift-right", SelectToNextWordBoundary, Some("Editor")),
220 Binding::new("alt-shift-F", SelectToNextWordBoundary, Some("Editor")),
221 Binding::new(
222 "cmd-shift-left",
223 SelectToBeginningOfLine(true),
224 Some("Editor"),
225 ),
226 Binding::new(
227 "ctrl-shift-A",
228 SelectToBeginningOfLine(true),
229 Some("Editor"),
230 ),
231 Binding::new("cmd-shift-right", SelectToEndOfLine(true), Some("Editor")),
232 Binding::new("ctrl-shift-E", SelectToEndOfLine(true), Some("Editor")),
233 Binding::new("cmd-shift-up", SelectToBeginning, Some("Editor")),
234 Binding::new("cmd-shift-down", SelectToEnd, Some("Editor")),
235 Binding::new("cmd-a", SelectAll, Some("Editor")),
236 Binding::new("cmd-l", SelectLine, Some("Editor")),
237 Binding::new("cmd-shift-L", SplitSelectionIntoLines, Some("Editor")),
238 Binding::new("cmd-alt-up", AddSelectionAbove, Some("Editor")),
239 Binding::new("cmd-ctrl-p", AddSelectionAbove, Some("Editor")),
240 Binding::new("cmd-alt-down", AddSelectionBelow, Some("Editor")),
241 Binding::new("cmd-ctrl-n", AddSelectionBelow, Some("Editor")),
242 Binding::new("cmd-d", SelectNext(false), Some("Editor")),
243 Binding::new("cmd-k cmd-d", SelectNext(true), Some("Editor")),
244 Binding::new("cmd-/", ToggleComments, Some("Editor")),
245 Binding::new("alt-up", SelectLargerSyntaxNode, Some("Editor")),
246 Binding::new("ctrl-w", SelectLargerSyntaxNode, Some("Editor")),
247 Binding::new("alt-down", SelectSmallerSyntaxNode, Some("Editor")),
248 Binding::new("ctrl-shift-W", SelectSmallerSyntaxNode, Some("Editor")),
249 Binding::new("f8", ShowNextDiagnostic, Some("Editor")),
250 Binding::new("f2", Rename, Some("Editor")),
251 Binding::new("f12", GoToDefinition, Some("Editor")),
252 Binding::new("ctrl-m", MoveToEnclosingBracket, Some("Editor")),
253 Binding::new("pageup", PageUp, Some("Editor")),
254 Binding::new("pagedown", PageDown, Some("Editor")),
255 Binding::new("alt-cmd-[", Fold, Some("Editor")),
256 Binding::new("alt-cmd-]", Unfold, Some("Editor")),
257 Binding::new("alt-cmd-f", FoldSelectedRanges, Some("Editor")),
258 Binding::new("ctrl-space", ShowCompletions, Some("Editor")),
259 Binding::new("cmd-.", ToggleCodeActions(false), Some("Editor")),
260 ]);
261
262 cx.add_action(Editor::open_new);
263 cx.add_action(|this: &mut Editor, action: &Scroll, cx| this.set_scroll_position(action.0, cx));
264 cx.add_action(Editor::select);
265 cx.add_action(Editor::cancel);
266 cx.add_action(Editor::handle_input);
267 cx.add_action(Editor::newline);
268 cx.add_action(Editor::backspace);
269 cx.add_action(Editor::delete);
270 cx.add_action(Editor::tab);
271 cx.add_action(Editor::outdent);
272 cx.add_action(Editor::delete_line);
273 cx.add_action(Editor::delete_to_previous_word_boundary);
274 cx.add_action(Editor::delete_to_next_word_boundary);
275 cx.add_action(Editor::delete_to_beginning_of_line);
276 cx.add_action(Editor::delete_to_end_of_line);
277 cx.add_action(Editor::cut_to_end_of_line);
278 cx.add_action(Editor::duplicate_line);
279 cx.add_action(Editor::move_line_up);
280 cx.add_action(Editor::move_line_down);
281 cx.add_action(Editor::cut);
282 cx.add_action(Editor::copy);
283 cx.add_action(Editor::paste);
284 cx.add_action(Editor::undo);
285 cx.add_action(Editor::redo);
286 cx.add_action(Editor::move_up);
287 cx.add_action(Editor::move_down);
288 cx.add_action(Editor::move_left);
289 cx.add_action(Editor::move_right);
290 cx.add_action(Editor::move_to_previous_word_boundary);
291 cx.add_action(Editor::move_to_next_word_boundary);
292 cx.add_action(Editor::move_to_beginning_of_line);
293 cx.add_action(Editor::move_to_end_of_line);
294 cx.add_action(Editor::move_to_beginning);
295 cx.add_action(Editor::move_to_end);
296 cx.add_action(Editor::select_up);
297 cx.add_action(Editor::select_down);
298 cx.add_action(Editor::select_left);
299 cx.add_action(Editor::select_right);
300 cx.add_action(Editor::select_to_previous_word_boundary);
301 cx.add_action(Editor::select_to_next_word_boundary);
302 cx.add_action(Editor::select_to_beginning_of_line);
303 cx.add_action(Editor::select_to_end_of_line);
304 cx.add_action(Editor::select_to_beginning);
305 cx.add_action(Editor::select_to_end);
306 cx.add_action(Editor::select_all);
307 cx.add_action(Editor::select_line);
308 cx.add_action(Editor::split_selection_into_lines);
309 cx.add_action(Editor::add_selection_above);
310 cx.add_action(Editor::add_selection_below);
311 cx.add_action(Editor::select_next);
312 cx.add_action(Editor::toggle_comments);
313 cx.add_action(Editor::select_larger_syntax_node);
314 cx.add_action(Editor::select_smaller_syntax_node);
315 cx.add_action(Editor::move_to_enclosing_bracket);
316 cx.add_action(Editor::show_next_diagnostic);
317 cx.add_action(Editor::go_to_definition);
318 cx.add_action(Editor::page_up);
319 cx.add_action(Editor::page_down);
320 cx.add_action(Editor::fold);
321 cx.add_action(Editor::unfold);
322 cx.add_action(Editor::fold_selected_ranges);
323 cx.add_action(Editor::show_completions);
324 cx.add_action(Editor::toggle_code_actions);
325 cx.add_async_action(Editor::confirm_completion);
326 cx.add_async_action(Editor::confirm_code_action);
327 cx.add_async_action(Editor::rename);
328 cx.add_async_action(Editor::confirm_rename);
329}
330
331trait SelectionExt {
332 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize>;
333 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point>;
334 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint>;
335 fn spanned_rows(&self, include_end_if_at_line_start: bool, map: &DisplaySnapshot)
336 -> Range<u32>;
337}
338
339trait InvalidationRegion {
340 fn ranges(&self) -> &[Range<Anchor>];
341}
342
343#[derive(Clone, Debug)]
344pub enum SelectPhase {
345 Begin {
346 position: DisplayPoint,
347 add: bool,
348 click_count: usize,
349 },
350 BeginColumnar {
351 position: DisplayPoint,
352 overshoot: u32,
353 },
354 Extend {
355 position: DisplayPoint,
356 click_count: usize,
357 },
358 Update {
359 position: DisplayPoint,
360 overshoot: u32,
361 scroll_position: Vector2F,
362 },
363 End,
364}
365
366#[derive(Clone, Debug)]
367pub enum SelectMode {
368 Character,
369 Word(Range<Anchor>),
370 Line(Range<Anchor>),
371 All,
372}
373
374#[derive(PartialEq, Eq)]
375pub enum Autoscroll {
376 Fit,
377 Center,
378 Newest,
379}
380
381#[derive(Copy, Clone, PartialEq, Eq)]
382pub enum EditorMode {
383 SingleLine,
384 AutoHeight { max_lines: usize },
385 Full,
386}
387
388#[derive(Clone)]
389pub struct EditorSettings {
390 pub tab_size: usize,
391 pub soft_wrap: SoftWrap,
392 pub style: EditorStyle,
393}
394
395#[derive(Clone)]
396pub enum SoftWrap {
397 None,
398 EditorWidth,
399 Column(u32),
400}
401
402type CompletionId = usize;
403
404pub type BuildSettings = Arc<dyn 'static + Send + Sync + Fn(&AppContext) -> EditorSettings>;
405
406pub struct Editor {
407 handle: WeakViewHandle<Self>,
408 buffer: ModelHandle<MultiBuffer>,
409 display_map: ModelHandle<DisplayMap>,
410 next_selection_id: usize,
411 selections: Arc<[Selection<Anchor>]>,
412 pending_selection: Option<PendingSelection>,
413 columnar_selection_tail: Option<Anchor>,
414 add_selections_state: Option<AddSelectionsState>,
415 select_next_state: Option<SelectNextState>,
416 selection_history:
417 HashMap<TransactionId, (Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)>,
418 autoclose_stack: InvalidationStack<BracketPairState>,
419 snippet_stack: InvalidationStack<SnippetState>,
420 select_larger_syntax_node_stack: Vec<Box<[Selection<usize>]>>,
421 active_diagnostics: Option<ActiveDiagnosticGroup>,
422 scroll_position: Vector2F,
423 scroll_top_anchor: Option<Anchor>,
424 autoscroll_request: Option<Autoscroll>,
425 build_settings: BuildSettings,
426 project: Option<ModelHandle<Project>>,
427 focused: bool,
428 show_local_cursors: bool,
429 blink_epoch: usize,
430 blinking_paused: bool,
431 mode: EditorMode,
432 vertical_scroll_margin: f32,
433 placeholder_text: Option<Arc<str>>,
434 highlighted_rows: Option<Range<u32>>,
435 highlighted_ranges: BTreeMap<TypeId, (Color, Vec<Range<Anchor>>)>,
436 nav_history: Option<ItemNavHistory>,
437 context_menu: Option<ContextMenu>,
438 completion_tasks: Vec<(CompletionId, Task<Option<()>>)>,
439 next_completion_id: CompletionId,
440 available_code_actions: Option<(ModelHandle<Buffer>, Arc<[CodeAction]>)>,
441 code_actions_task: Option<Task<()>>,
442 pending_rename: Option<RenameState>,
443}
444
445pub struct EditorSnapshot {
446 pub mode: EditorMode,
447 pub display_snapshot: DisplaySnapshot,
448 pub placeholder_text: Option<Arc<str>>,
449 is_focused: bool,
450 scroll_position: Vector2F,
451 scroll_top_anchor: Option<Anchor>,
452}
453
454#[derive(Clone)]
455pub struct PendingSelection {
456 selection: Selection<Anchor>,
457 mode: SelectMode,
458}
459
460struct AddSelectionsState {
461 above: bool,
462 stack: Vec<usize>,
463}
464
465struct SelectNextState {
466 query: AhoCorasick,
467 wordwise: bool,
468 done: bool,
469}
470
471struct BracketPairState {
472 ranges: Vec<Range<Anchor>>,
473 pair: BracketPair,
474}
475
476struct SnippetState {
477 ranges: Vec<Vec<Range<Anchor>>>,
478 active_index: usize,
479}
480
481struct RenameState {
482 range: Range<Anchor>,
483 old_name: String,
484 editor: ViewHandle<Editor>,
485 block_id: BlockId,
486}
487
488struct InvalidationStack<T>(Vec<T>);
489
490enum ContextMenu {
491 Completions(CompletionsMenu),
492 CodeActions(CodeActionsMenu),
493}
494
495impl ContextMenu {
496 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) -> bool {
497 if self.visible() {
498 match self {
499 ContextMenu::Completions(menu) => menu.select_prev(cx),
500 ContextMenu::CodeActions(menu) => menu.select_prev(cx),
501 }
502 true
503 } else {
504 false
505 }
506 }
507
508 fn select_next(&mut self, cx: &mut ViewContext<Editor>) -> bool {
509 if self.visible() {
510 match self {
511 ContextMenu::Completions(menu) => menu.select_next(cx),
512 ContextMenu::CodeActions(menu) => menu.select_next(cx),
513 }
514 true
515 } else {
516 false
517 }
518 }
519
520 fn visible(&self) -> bool {
521 match self {
522 ContextMenu::Completions(menu) => menu.visible(),
523 ContextMenu::CodeActions(menu) => menu.visible(),
524 }
525 }
526
527 fn render(
528 &self,
529 cursor_position: DisplayPoint,
530 build_settings: BuildSettings,
531 cx: &AppContext,
532 ) -> (DisplayPoint, ElementBox) {
533 match self {
534 ContextMenu::Completions(menu) => (cursor_position, menu.render(build_settings, cx)),
535 ContextMenu::CodeActions(menu) => menu.render(cursor_position, build_settings, cx),
536 }
537 }
538}
539
540struct CompletionsMenu {
541 id: CompletionId,
542 initial_position: Anchor,
543 buffer: ModelHandle<Buffer>,
544 completions: Arc<[Completion]>,
545 match_candidates: Vec<StringMatchCandidate>,
546 matches: Arc<[StringMatch]>,
547 selected_item: usize,
548 list: UniformListState,
549}
550
551impl CompletionsMenu {
552 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) {
553 if self.selected_item > 0 {
554 self.selected_item -= 1;
555 self.list.scroll_to(ScrollTarget::Show(self.selected_item));
556 }
557 cx.notify();
558 }
559
560 fn select_next(&mut self, cx: &mut ViewContext<Editor>) {
561 if self.selected_item + 1 < self.matches.len() {
562 self.selected_item += 1;
563 self.list.scroll_to(ScrollTarget::Show(self.selected_item));
564 }
565 cx.notify();
566 }
567
568 fn visible(&self) -> bool {
569 !self.matches.is_empty()
570 }
571
572 fn render(&self, build_settings: BuildSettings, cx: &AppContext) -> ElementBox {
573 enum CompletionTag {}
574
575 let settings = build_settings(cx);
576 let completions = self.completions.clone();
577 let matches = self.matches.clone();
578 let selected_item = self.selected_item;
579 UniformList::new(self.list.clone(), matches.len(), move |range, items, cx| {
580 let settings = build_settings(cx);
581 let start_ix = range.start;
582 for (ix, mat) in matches[range].iter().enumerate() {
583 let completion = &completions[mat.candidate_id];
584 let item_ix = start_ix + ix;
585 items.push(
586 MouseEventHandler::new::<CompletionTag, _, _>(
587 mat.candidate_id,
588 cx,
589 |state, _| {
590 let item_style = if item_ix == selected_item {
591 settings.style.autocomplete.selected_item
592 } else if state.hovered {
593 settings.style.autocomplete.hovered_item
594 } else {
595 settings.style.autocomplete.item
596 };
597
598 Text::new(completion.label.text.clone(), settings.style.text.clone())
599 .with_soft_wrap(false)
600 .with_highlights(combine_syntax_and_fuzzy_match_highlights(
601 &completion.label.text,
602 settings.style.text.color.into(),
603 styled_runs_for_completion_label(
604 &completion.label,
605 settings.style.text.color,
606 &settings.style.syntax,
607 ),
608 &mat.positions,
609 ))
610 .contained()
611 .with_style(item_style)
612 .boxed()
613 },
614 )
615 .with_cursor_style(CursorStyle::PointingHand)
616 .on_mouse_down(move |cx| {
617 cx.dispatch_action(ConfirmCompletion(Some(item_ix)));
618 })
619 .boxed(),
620 );
621 }
622 })
623 .with_width_from_item(
624 self.matches
625 .iter()
626 .enumerate()
627 .max_by_key(|(_, mat)| {
628 self.completions[mat.candidate_id]
629 .label
630 .text
631 .chars()
632 .count()
633 })
634 .map(|(ix, _)| ix),
635 )
636 .contained()
637 .with_style(settings.style.autocomplete.container)
638 .boxed()
639 }
640
641 pub async fn filter(&mut self, query: Option<&str>, executor: Arc<executor::Background>) {
642 let mut matches = if let Some(query) = query {
643 fuzzy::match_strings(
644 &self.match_candidates,
645 query,
646 false,
647 100,
648 &Default::default(),
649 executor,
650 )
651 .await
652 } else {
653 self.match_candidates
654 .iter()
655 .enumerate()
656 .map(|(candidate_id, candidate)| StringMatch {
657 candidate_id,
658 score: Default::default(),
659 positions: Default::default(),
660 string: candidate.string.clone(),
661 })
662 .collect()
663 };
664 matches.sort_unstable_by_key(|mat| {
665 (
666 Reverse(OrderedFloat(mat.score)),
667 self.completions[mat.candidate_id].sort_key(),
668 )
669 });
670
671 for mat in &mut matches {
672 let filter_start = self.completions[mat.candidate_id].label.filter_range.start;
673 for position in &mut mat.positions {
674 *position += filter_start;
675 }
676 }
677
678 self.matches = matches.into();
679 }
680}
681
682#[derive(Clone)]
683struct CodeActionsMenu {
684 actions: Arc<[CodeAction]>,
685 buffer: ModelHandle<Buffer>,
686 selected_item: usize,
687 list: UniformListState,
688 deployed_from_indicator: bool,
689}
690
691impl CodeActionsMenu {
692 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) {
693 if self.selected_item > 0 {
694 self.selected_item -= 1;
695 cx.notify()
696 }
697 }
698
699 fn select_next(&mut self, cx: &mut ViewContext<Editor>) {
700 if self.selected_item + 1 < self.actions.len() {
701 self.selected_item += 1;
702 cx.notify()
703 }
704 }
705
706 fn visible(&self) -> bool {
707 !self.actions.is_empty()
708 }
709
710 fn render(
711 &self,
712 mut cursor_position: DisplayPoint,
713 build_settings: BuildSettings,
714 cx: &AppContext,
715 ) -> (DisplayPoint, ElementBox) {
716 enum ActionTag {}
717
718 let settings = build_settings(cx);
719 let actions = self.actions.clone();
720 let selected_item = self.selected_item;
721 let element =
722 UniformList::new(self.list.clone(), actions.len(), move |range, items, cx| {
723 let settings = build_settings(cx);
724 let start_ix = range.start;
725 for (ix, action) in actions[range].iter().enumerate() {
726 let item_ix = start_ix + ix;
727 items.push(
728 MouseEventHandler::new::<ActionTag, _, _>(item_ix, cx, |state, _| {
729 let item_style = if item_ix == selected_item {
730 settings.style.autocomplete.selected_item
731 } else if state.hovered {
732 settings.style.autocomplete.hovered_item
733 } else {
734 settings.style.autocomplete.item
735 };
736
737 Text::new(action.lsp_action.title.clone(), settings.style.text.clone())
738 .with_soft_wrap(false)
739 .contained()
740 .with_style(item_style)
741 .boxed()
742 })
743 .with_cursor_style(CursorStyle::PointingHand)
744 .on_mouse_down(move |cx| {
745 cx.dispatch_action(ConfirmCodeAction(Some(item_ix)));
746 })
747 .boxed(),
748 );
749 }
750 })
751 .with_width_from_item(
752 self.actions
753 .iter()
754 .enumerate()
755 .max_by_key(|(_, action)| action.lsp_action.title.chars().count())
756 .map(|(ix, _)| ix),
757 )
758 .contained()
759 .with_style(settings.style.autocomplete.container)
760 .boxed();
761
762 if self.deployed_from_indicator {
763 *cursor_position.column_mut() = 0;
764 }
765
766 (cursor_position, element)
767 }
768}
769
770#[derive(Debug)]
771struct ActiveDiagnosticGroup {
772 primary_range: Range<Anchor>,
773 primary_message: String,
774 blocks: HashMap<BlockId, Diagnostic>,
775 is_valid: bool,
776}
777
778#[derive(Serialize, Deserialize)]
779struct ClipboardSelection {
780 len: usize,
781 is_entire_line: bool,
782}
783
784pub struct NavigationData {
785 anchor: Anchor,
786 offset: usize,
787}
788
789impl Editor {
790 pub fn single_line(build_settings: BuildSettings, cx: &mut ViewContext<Self>) -> Self {
791 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
792 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
793 let mut view = Self::for_buffer(buffer, build_settings, None, cx);
794 view.mode = EditorMode::SingleLine;
795 view
796 }
797
798 pub fn auto_height(
799 max_lines: usize,
800 build_settings: BuildSettings,
801 cx: &mut ViewContext<Self>,
802 ) -> Self {
803 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
804 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
805 let mut view = Self::for_buffer(buffer, build_settings, None, cx);
806 view.mode = EditorMode::AutoHeight { max_lines };
807 view
808 }
809
810 pub fn for_buffer(
811 buffer: ModelHandle<MultiBuffer>,
812 build_settings: BuildSettings,
813 project: Option<ModelHandle<Project>>,
814 cx: &mut ViewContext<Self>,
815 ) -> Self {
816 Self::new(buffer, build_settings, project, cx)
817 }
818
819 pub fn clone(&self, cx: &mut ViewContext<Self>) -> Self {
820 let mut clone = Self::new(
821 self.buffer.clone(),
822 self.build_settings.clone(),
823 self.project.clone(),
824 cx,
825 );
826 clone.scroll_position = self.scroll_position;
827 clone.scroll_top_anchor = self.scroll_top_anchor.clone();
828 clone.nav_history = self
829 .nav_history
830 .as_ref()
831 .map(|nav_history| ItemNavHistory::new(nav_history.history(), &cx.handle()));
832 clone
833 }
834
835 pub fn new(
836 buffer: ModelHandle<MultiBuffer>,
837 build_settings: BuildSettings,
838 project: Option<ModelHandle<Project>>,
839 cx: &mut ViewContext<Self>,
840 ) -> Self {
841 let settings = build_settings(cx);
842 let display_map = cx.add_model(|cx| {
843 DisplayMap::new(
844 buffer.clone(),
845 settings.tab_size,
846 settings.style.text.font_id,
847 settings.style.text.font_size,
848 None,
849 2,
850 1,
851 cx,
852 )
853 });
854 cx.observe(&buffer, Self::on_buffer_changed).detach();
855 cx.subscribe(&buffer, Self::on_buffer_event).detach();
856 cx.observe(&display_map, Self::on_display_map_changed)
857 .detach();
858
859 let mut this = Self {
860 handle: cx.weak_handle(),
861 buffer,
862 display_map,
863 selections: Arc::from([]),
864 pending_selection: Some(PendingSelection {
865 selection: Selection {
866 id: 0,
867 start: Anchor::min(),
868 end: Anchor::min(),
869 reversed: false,
870 goal: SelectionGoal::None,
871 },
872 mode: SelectMode::Character,
873 }),
874 columnar_selection_tail: None,
875 next_selection_id: 1,
876 add_selections_state: None,
877 select_next_state: None,
878 selection_history: Default::default(),
879 autoclose_stack: Default::default(),
880 snippet_stack: Default::default(),
881 select_larger_syntax_node_stack: Vec::new(),
882 active_diagnostics: None,
883 build_settings,
884 project,
885 scroll_position: Vector2F::zero(),
886 scroll_top_anchor: None,
887 autoscroll_request: None,
888 focused: false,
889 show_local_cursors: false,
890 blink_epoch: 0,
891 blinking_paused: false,
892 mode: EditorMode::Full,
893 vertical_scroll_margin: 3.0,
894 placeholder_text: None,
895 highlighted_rows: None,
896 highlighted_ranges: Default::default(),
897 nav_history: None,
898 context_menu: None,
899 completion_tasks: Default::default(),
900 next_completion_id: 0,
901 available_code_actions: Default::default(),
902 code_actions_task: Default::default(),
903 pending_rename: Default::default(),
904 };
905 this.end_selection(cx);
906 this
907 }
908
909 pub fn open_new(
910 workspace: &mut Workspace,
911 _: &workspace::OpenNew,
912 cx: &mut ViewContext<Workspace>,
913 ) {
914 let buffer = cx
915 .add_model(|cx| Buffer::new(0, "", cx).with_language(language::PLAIN_TEXT.clone(), cx));
916 workspace.open_item(BufferItemHandle(buffer), cx);
917 }
918
919 pub fn replica_id(&self, cx: &AppContext) -> ReplicaId {
920 self.buffer.read(cx).replica_id()
921 }
922
923 pub fn buffer(&self) -> &ModelHandle<MultiBuffer> {
924 &self.buffer
925 }
926
927 pub fn title(&self, cx: &AppContext) -> String {
928 self.buffer().read(cx).title(cx)
929 }
930
931 pub fn snapshot(&mut self, cx: &mut MutableAppContext) -> EditorSnapshot {
932 EditorSnapshot {
933 mode: self.mode,
934 display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
935 scroll_position: self.scroll_position,
936 scroll_top_anchor: self.scroll_top_anchor.clone(),
937 placeholder_text: self.placeholder_text.clone(),
938 is_focused: self
939 .handle
940 .upgrade(cx)
941 .map_or(false, |handle| handle.is_focused(cx)),
942 }
943 }
944
945 pub fn language<'a>(&self, cx: &'a AppContext) -> Option<&'a Arc<Language>> {
946 self.buffer.read(cx).language(cx)
947 }
948
949 pub fn set_placeholder_text(
950 &mut self,
951 placeholder_text: impl Into<Arc<str>>,
952 cx: &mut ViewContext<Self>,
953 ) {
954 self.placeholder_text = Some(placeholder_text.into());
955 cx.notify();
956 }
957
958 pub fn set_vertical_scroll_margin(&mut self, margin_rows: usize, cx: &mut ViewContext<Self>) {
959 self.vertical_scroll_margin = margin_rows as f32;
960 cx.notify();
961 }
962
963 pub fn set_scroll_position(&mut self, scroll_position: Vector2F, cx: &mut ViewContext<Self>) {
964 let map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
965
966 if scroll_position.y() == 0. {
967 self.scroll_top_anchor = None;
968 self.scroll_position = scroll_position;
969 } else {
970 let scroll_top_buffer_offset =
971 DisplayPoint::new(scroll_position.y() as u32, 0).to_offset(&map, Bias::Right);
972 let anchor = map
973 .buffer_snapshot
974 .anchor_at(scroll_top_buffer_offset, Bias::Right);
975 self.scroll_position = vec2f(
976 scroll_position.x(),
977 scroll_position.y() - anchor.to_display_point(&map).row() as f32,
978 );
979 self.scroll_top_anchor = Some(anchor);
980 }
981
982 cx.notify();
983 }
984
985 pub fn scroll_position(&self, cx: &mut ViewContext<Self>) -> Vector2F {
986 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
987 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor)
988 }
989
990 pub fn clamp_scroll_left(&mut self, max: f32) -> bool {
991 if max < self.scroll_position.x() {
992 self.scroll_position.set_x(max);
993 true
994 } else {
995 false
996 }
997 }
998
999 pub fn autoscroll_vertically(
1000 &mut self,
1001 viewport_height: f32,
1002 line_height: f32,
1003 cx: &mut ViewContext<Self>,
1004 ) -> bool {
1005 let visible_lines = viewport_height / line_height;
1006 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1007 let mut scroll_position =
1008 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor);
1009 let max_scroll_top = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
1010 (display_map.max_point().row() as f32 - visible_lines + 1.).max(0.)
1011 } else {
1012 display_map.max_point().row().saturating_sub(1) as f32
1013 };
1014 if scroll_position.y() > max_scroll_top {
1015 scroll_position.set_y(max_scroll_top);
1016 self.set_scroll_position(scroll_position, cx);
1017 }
1018
1019 let autoscroll = if let Some(autoscroll) = self.autoscroll_request.take() {
1020 autoscroll
1021 } else {
1022 return false;
1023 };
1024
1025 let first_cursor_top;
1026 let last_cursor_bottom;
1027 if let Some(highlighted_rows) = &self.highlighted_rows {
1028 first_cursor_top = highlighted_rows.start as f32;
1029 last_cursor_bottom = first_cursor_top + 1.;
1030 } else if autoscroll == Autoscroll::Newest {
1031 let newest_selection = self.newest_selection::<Point>(&display_map.buffer_snapshot);
1032 first_cursor_top = newest_selection.head().to_display_point(&display_map).row() as f32;
1033 last_cursor_bottom = first_cursor_top + 1.;
1034 } else {
1035 let selections = self.local_selections::<Point>(cx);
1036 first_cursor_top = selections
1037 .first()
1038 .unwrap()
1039 .head()
1040 .to_display_point(&display_map)
1041 .row() as f32;
1042 last_cursor_bottom = selections
1043 .last()
1044 .unwrap()
1045 .head()
1046 .to_display_point(&display_map)
1047 .row() as f32
1048 + 1.0;
1049 }
1050
1051 let margin = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
1052 0.
1053 } else {
1054 ((visible_lines - (last_cursor_bottom - first_cursor_top)) / 2.0).floor()
1055 };
1056 if margin < 0.0 {
1057 return false;
1058 }
1059
1060 match autoscroll {
1061 Autoscroll::Fit | Autoscroll::Newest => {
1062 let margin = margin.min(self.vertical_scroll_margin);
1063 let target_top = (first_cursor_top - margin).max(0.0);
1064 let target_bottom = last_cursor_bottom + margin;
1065 let start_row = scroll_position.y();
1066 let end_row = start_row + visible_lines;
1067
1068 if target_top < start_row {
1069 scroll_position.set_y(target_top);
1070 self.set_scroll_position(scroll_position, cx);
1071 } else if target_bottom >= end_row {
1072 scroll_position.set_y(target_bottom - visible_lines);
1073 self.set_scroll_position(scroll_position, cx);
1074 }
1075 }
1076 Autoscroll::Center => {
1077 scroll_position.set_y((first_cursor_top - margin).max(0.0));
1078 self.set_scroll_position(scroll_position, cx);
1079 }
1080 }
1081
1082 true
1083 }
1084
1085 pub fn autoscroll_horizontally(
1086 &mut self,
1087 start_row: u32,
1088 viewport_width: f32,
1089 scroll_width: f32,
1090 max_glyph_width: f32,
1091 layouts: &[text_layout::Line],
1092 cx: &mut ViewContext<Self>,
1093 ) -> bool {
1094 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1095 let selections = self.local_selections::<Point>(cx);
1096
1097 let mut target_left;
1098 let mut target_right;
1099
1100 if self.highlighted_rows.is_some() {
1101 target_left = 0.0_f32;
1102 target_right = 0.0_f32;
1103 } else {
1104 target_left = std::f32::INFINITY;
1105 target_right = 0.0_f32;
1106 for selection in selections {
1107 let head = selection.head().to_display_point(&display_map);
1108 if head.row() >= start_row && head.row() < start_row + layouts.len() as u32 {
1109 let start_column = head.column().saturating_sub(3);
1110 let end_column = cmp::min(display_map.line_len(head.row()), head.column() + 3);
1111 target_left = target_left.min(
1112 layouts[(head.row() - start_row) as usize]
1113 .x_for_index(start_column as usize),
1114 );
1115 target_right = target_right.max(
1116 layouts[(head.row() - start_row) as usize].x_for_index(end_column as usize)
1117 + max_glyph_width,
1118 );
1119 }
1120 }
1121 }
1122
1123 target_right = target_right.min(scroll_width);
1124
1125 if target_right - target_left > viewport_width {
1126 return false;
1127 }
1128
1129 let scroll_left = self.scroll_position.x() * max_glyph_width;
1130 let scroll_right = scroll_left + viewport_width;
1131
1132 if target_left < scroll_left {
1133 self.scroll_position.set_x(target_left / max_glyph_width);
1134 true
1135 } else if target_right > scroll_right {
1136 self.scroll_position
1137 .set_x((target_right - viewport_width) / max_glyph_width);
1138 true
1139 } else {
1140 false
1141 }
1142 }
1143
1144 fn select(&mut self, Select(phase): &Select, cx: &mut ViewContext<Self>) {
1145 self.hide_context_menu(cx);
1146
1147 match phase {
1148 SelectPhase::Begin {
1149 position,
1150 add,
1151 click_count,
1152 } => self.begin_selection(*position, *add, *click_count, cx),
1153 SelectPhase::BeginColumnar {
1154 position,
1155 overshoot,
1156 } => self.begin_columnar_selection(*position, *overshoot, cx),
1157 SelectPhase::Extend {
1158 position,
1159 click_count,
1160 } => self.extend_selection(*position, *click_count, cx),
1161 SelectPhase::Update {
1162 position,
1163 overshoot,
1164 scroll_position,
1165 } => self.update_selection(*position, *overshoot, *scroll_position, cx),
1166 SelectPhase::End => self.end_selection(cx),
1167 }
1168 }
1169
1170 fn extend_selection(
1171 &mut self,
1172 position: DisplayPoint,
1173 click_count: usize,
1174 cx: &mut ViewContext<Self>,
1175 ) {
1176 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1177 let tail = self
1178 .newest_selection::<usize>(&display_map.buffer_snapshot)
1179 .tail();
1180 self.begin_selection(position, false, click_count, cx);
1181
1182 let position = position.to_offset(&display_map, Bias::Left);
1183 let tail_anchor = display_map.buffer_snapshot.anchor_before(tail);
1184 let mut pending = self.pending_selection.clone().unwrap();
1185
1186 if position >= tail {
1187 pending.selection.start = tail_anchor.clone();
1188 } else {
1189 pending.selection.end = tail_anchor.clone();
1190 pending.selection.reversed = true;
1191 }
1192
1193 match &mut pending.mode {
1194 SelectMode::Word(range) | SelectMode::Line(range) => {
1195 *range = tail_anchor.clone()..tail_anchor
1196 }
1197 _ => {}
1198 }
1199
1200 self.set_selections(self.selections.clone(), Some(pending), cx);
1201 }
1202
1203 fn begin_selection(
1204 &mut self,
1205 position: DisplayPoint,
1206 add: bool,
1207 click_count: usize,
1208 cx: &mut ViewContext<Self>,
1209 ) {
1210 if !self.focused {
1211 cx.focus_self();
1212 cx.emit(Event::Activate);
1213 }
1214
1215 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1216 let buffer = &display_map.buffer_snapshot;
1217 let newest_selection = self.newest_anchor_selection().clone();
1218
1219 let start;
1220 let end;
1221 let mode;
1222 match click_count {
1223 1 => {
1224 start = buffer.anchor_before(position.to_point(&display_map));
1225 end = start.clone();
1226 mode = SelectMode::Character;
1227 }
1228 2 => {
1229 let range = movement::surrounding_word(&display_map, position);
1230 start = buffer.anchor_before(range.start.to_point(&display_map));
1231 end = buffer.anchor_before(range.end.to_point(&display_map));
1232 mode = SelectMode::Word(start.clone()..end.clone());
1233 }
1234 3 => {
1235 let position = display_map
1236 .clip_point(position, Bias::Left)
1237 .to_point(&display_map);
1238 let line_start = display_map.prev_line_boundary(position).0;
1239 let next_line_start = buffer.clip_point(
1240 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1241 Bias::Left,
1242 );
1243 start = buffer.anchor_before(line_start);
1244 end = buffer.anchor_before(next_line_start);
1245 mode = SelectMode::Line(start.clone()..end.clone());
1246 }
1247 _ => {
1248 start = buffer.anchor_before(0);
1249 end = buffer.anchor_before(buffer.len());
1250 mode = SelectMode::All;
1251 }
1252 }
1253
1254 self.push_to_nav_history(newest_selection.head(), Some(end.to_point(&buffer)), cx);
1255
1256 let selection = Selection {
1257 id: post_inc(&mut self.next_selection_id),
1258 start,
1259 end,
1260 reversed: false,
1261 goal: SelectionGoal::None,
1262 };
1263
1264 let mut selections;
1265 if add {
1266 selections = self.selections.clone();
1267 // Remove the newest selection if it was added due to a previous mouse up
1268 // within this multi-click.
1269 if click_count > 1 {
1270 selections = self
1271 .selections
1272 .iter()
1273 .filter(|selection| selection.id != newest_selection.id)
1274 .cloned()
1275 .collect();
1276 }
1277 } else {
1278 selections = Arc::from([]);
1279 }
1280 self.set_selections(selections, Some(PendingSelection { selection, mode }), cx);
1281
1282 cx.notify();
1283 }
1284
1285 fn begin_columnar_selection(
1286 &mut self,
1287 position: DisplayPoint,
1288 overshoot: u32,
1289 cx: &mut ViewContext<Self>,
1290 ) {
1291 if !self.focused {
1292 cx.focus_self();
1293 cx.emit(Event::Activate);
1294 }
1295
1296 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1297 let tail = self
1298 .newest_selection::<Point>(&display_map.buffer_snapshot)
1299 .tail();
1300 self.columnar_selection_tail = Some(display_map.buffer_snapshot.anchor_before(tail));
1301
1302 self.select_columns(
1303 tail.to_display_point(&display_map),
1304 position,
1305 overshoot,
1306 &display_map,
1307 cx,
1308 );
1309 }
1310
1311 fn update_selection(
1312 &mut self,
1313 position: DisplayPoint,
1314 overshoot: u32,
1315 scroll_position: Vector2F,
1316 cx: &mut ViewContext<Self>,
1317 ) {
1318 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1319
1320 if let Some(tail) = self.columnar_selection_tail.as_ref() {
1321 let tail = tail.to_display_point(&display_map);
1322 self.select_columns(tail, position, overshoot, &display_map, cx);
1323 } else if let Some(mut pending) = self.pending_selection.clone() {
1324 let buffer = self.buffer.read(cx).snapshot(cx);
1325 let head;
1326 let tail;
1327 match &pending.mode {
1328 SelectMode::Character => {
1329 head = position.to_point(&display_map);
1330 tail = pending.selection.tail().to_point(&buffer);
1331 }
1332 SelectMode::Word(original_range) => {
1333 let original_display_range = original_range.start.to_display_point(&display_map)
1334 ..original_range.end.to_display_point(&display_map);
1335 let original_buffer_range = original_display_range.start.to_point(&display_map)
1336 ..original_display_range.end.to_point(&display_map);
1337 if movement::is_inside_word(&display_map, position)
1338 || original_display_range.contains(&position)
1339 {
1340 let word_range = movement::surrounding_word(&display_map, position);
1341 if word_range.start < original_display_range.start {
1342 head = word_range.start.to_point(&display_map);
1343 } else {
1344 head = word_range.end.to_point(&display_map);
1345 }
1346 } else {
1347 head = position.to_point(&display_map);
1348 }
1349
1350 if head <= original_buffer_range.start {
1351 tail = original_buffer_range.end;
1352 } else {
1353 tail = original_buffer_range.start;
1354 }
1355 }
1356 SelectMode::Line(original_range) => {
1357 let original_range = original_range.to_point(&display_map.buffer_snapshot);
1358
1359 let position = display_map
1360 .clip_point(position, Bias::Left)
1361 .to_point(&display_map);
1362 let line_start = display_map.prev_line_boundary(position).0;
1363 let next_line_start = buffer.clip_point(
1364 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1365 Bias::Left,
1366 );
1367
1368 if line_start < original_range.start {
1369 head = line_start
1370 } else {
1371 head = next_line_start
1372 }
1373
1374 if head <= original_range.start {
1375 tail = original_range.end;
1376 } else {
1377 tail = original_range.start;
1378 }
1379 }
1380 SelectMode::All => {
1381 return;
1382 }
1383 };
1384
1385 if head < tail {
1386 pending.selection.start = buffer.anchor_before(head);
1387 pending.selection.end = buffer.anchor_before(tail);
1388 pending.selection.reversed = true;
1389 } else {
1390 pending.selection.start = buffer.anchor_before(tail);
1391 pending.selection.end = buffer.anchor_before(head);
1392 pending.selection.reversed = false;
1393 }
1394 self.set_selections(self.selections.clone(), Some(pending), cx);
1395 } else {
1396 log::error!("update_selection dispatched with no pending selection");
1397 return;
1398 }
1399
1400 self.set_scroll_position(scroll_position, cx);
1401 cx.notify();
1402 }
1403
1404 fn end_selection(&mut self, cx: &mut ViewContext<Self>) {
1405 self.columnar_selection_tail.take();
1406 if self.pending_selection.is_some() {
1407 let selections = self.local_selections::<usize>(cx);
1408 self.update_selections(selections, None, cx);
1409 }
1410 }
1411
1412 fn select_columns(
1413 &mut self,
1414 tail: DisplayPoint,
1415 head: DisplayPoint,
1416 overshoot: u32,
1417 display_map: &DisplaySnapshot,
1418 cx: &mut ViewContext<Self>,
1419 ) {
1420 let start_row = cmp::min(tail.row(), head.row());
1421 let end_row = cmp::max(tail.row(), head.row());
1422 let start_column = cmp::min(tail.column(), head.column() + overshoot);
1423 let end_column = cmp::max(tail.column(), head.column() + overshoot);
1424 let reversed = start_column < tail.column();
1425
1426 let selections = (start_row..=end_row)
1427 .filter_map(|row| {
1428 if start_column <= display_map.line_len(row) && !display_map.is_block_line(row) {
1429 let start = display_map
1430 .clip_point(DisplayPoint::new(row, start_column), Bias::Left)
1431 .to_point(&display_map);
1432 let end = display_map
1433 .clip_point(DisplayPoint::new(row, end_column), Bias::Right)
1434 .to_point(&display_map);
1435 Some(Selection {
1436 id: post_inc(&mut self.next_selection_id),
1437 start,
1438 end,
1439 reversed,
1440 goal: SelectionGoal::None,
1441 })
1442 } else {
1443 None
1444 }
1445 })
1446 .collect::<Vec<_>>();
1447
1448 self.update_selections(selections, None, cx);
1449 cx.notify();
1450 }
1451
1452 pub fn is_selecting(&self) -> bool {
1453 self.pending_selection.is_some() || self.columnar_selection_tail.is_some()
1454 }
1455
1456 pub fn cancel(&mut self, _: &Cancel, cx: &mut ViewContext<Self>) {
1457 if self.take_rename(cx).is_some() {
1458 return;
1459 }
1460
1461 if self.hide_context_menu(cx).is_some() {
1462 return;
1463 }
1464
1465 if self.snippet_stack.pop().is_some() {
1466 return;
1467 }
1468
1469 if self.mode != EditorMode::Full {
1470 cx.propagate_action();
1471 return;
1472 }
1473
1474 if self.active_diagnostics.is_some() {
1475 self.dismiss_diagnostics(cx);
1476 } else if let Some(pending) = self.pending_selection.clone() {
1477 let mut selections = self.selections.clone();
1478 if selections.is_empty() {
1479 selections = Arc::from([pending.selection]);
1480 }
1481 self.set_selections(selections, None, cx);
1482 self.request_autoscroll(Autoscroll::Fit, cx);
1483 } else {
1484 let buffer = self.buffer.read(cx).snapshot(cx);
1485 let mut oldest_selection = self.oldest_selection::<usize>(&buffer);
1486 if self.selection_count() == 1 {
1487 if oldest_selection.is_empty() {
1488 cx.propagate_action();
1489 return;
1490 }
1491
1492 oldest_selection.start = oldest_selection.head().clone();
1493 oldest_selection.end = oldest_selection.head().clone();
1494 }
1495 self.update_selections(vec![oldest_selection], Some(Autoscroll::Fit), cx);
1496 }
1497 }
1498
1499 #[cfg(any(test, feature = "test-support"))]
1500 pub fn selected_ranges<D: TextDimension + Ord + Sub<D, Output = D>>(
1501 &self,
1502 cx: &mut MutableAppContext,
1503 ) -> Vec<Range<D>> {
1504 self.local_selections::<D>(cx)
1505 .iter()
1506 .map(|s| {
1507 if s.reversed {
1508 s.end.clone()..s.start.clone()
1509 } else {
1510 s.start.clone()..s.end.clone()
1511 }
1512 })
1513 .collect()
1514 }
1515
1516 #[cfg(any(test, feature = "test-support"))]
1517 pub fn selected_display_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
1518 let display_map = self
1519 .display_map
1520 .update(cx, |display_map, cx| display_map.snapshot(cx));
1521 self.selections
1522 .iter()
1523 .chain(
1524 self.pending_selection
1525 .as_ref()
1526 .map(|pending| &pending.selection),
1527 )
1528 .map(|s| {
1529 if s.reversed {
1530 s.end.to_display_point(&display_map)..s.start.to_display_point(&display_map)
1531 } else {
1532 s.start.to_display_point(&display_map)..s.end.to_display_point(&display_map)
1533 }
1534 })
1535 .collect()
1536 }
1537
1538 pub fn select_ranges<I, T>(
1539 &mut self,
1540 ranges: I,
1541 autoscroll: Option<Autoscroll>,
1542 cx: &mut ViewContext<Self>,
1543 ) where
1544 I: IntoIterator<Item = Range<T>>,
1545 T: ToOffset,
1546 {
1547 let buffer = self.buffer.read(cx).snapshot(cx);
1548 let selections = ranges
1549 .into_iter()
1550 .map(|range| {
1551 let mut start = range.start.to_offset(&buffer);
1552 let mut end = range.end.to_offset(&buffer);
1553 let reversed = if start > end {
1554 mem::swap(&mut start, &mut end);
1555 true
1556 } else {
1557 false
1558 };
1559 Selection {
1560 id: post_inc(&mut self.next_selection_id),
1561 start,
1562 end,
1563 reversed,
1564 goal: SelectionGoal::None,
1565 }
1566 })
1567 .collect::<Vec<_>>();
1568 self.update_selections(selections, autoscroll, cx);
1569 }
1570
1571 #[cfg(any(test, feature = "test-support"))]
1572 pub fn select_display_ranges<'a, T>(&mut self, ranges: T, cx: &mut ViewContext<Self>)
1573 where
1574 T: IntoIterator<Item = &'a Range<DisplayPoint>>,
1575 {
1576 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1577 let selections = ranges
1578 .into_iter()
1579 .map(|range| {
1580 let mut start = range.start;
1581 let mut end = range.end;
1582 let reversed = if start > end {
1583 mem::swap(&mut start, &mut end);
1584 true
1585 } else {
1586 false
1587 };
1588 Selection {
1589 id: post_inc(&mut self.next_selection_id),
1590 start: start.to_point(&display_map),
1591 end: end.to_point(&display_map),
1592 reversed,
1593 goal: SelectionGoal::None,
1594 }
1595 })
1596 .collect();
1597 self.update_selections(selections, None, cx);
1598 }
1599
1600 pub fn handle_input(&mut self, action: &Input, cx: &mut ViewContext<Self>) {
1601 let text = action.0.as_ref();
1602 if !self.skip_autoclose_end(text, cx) {
1603 self.start_transaction(cx);
1604 self.insert(text, cx);
1605 self.autoclose_pairs(cx);
1606 self.end_transaction(cx);
1607 self.trigger_completion_on_input(text, cx);
1608 }
1609 }
1610
1611 pub fn newline(&mut self, _: &Newline, cx: &mut ViewContext<Self>) {
1612 self.start_transaction(cx);
1613 let mut old_selections = SmallVec::<[_; 32]>::new();
1614 {
1615 let selections = self.local_selections::<usize>(cx);
1616 let buffer = self.buffer.read(cx).snapshot(cx);
1617 for selection in selections.iter() {
1618 let start_point = selection.start.to_point(&buffer);
1619 let indent = buffer
1620 .indent_column_for_line(start_point.row)
1621 .min(start_point.column);
1622 let start = selection.start;
1623 let end = selection.end;
1624
1625 let mut insert_extra_newline = false;
1626 if let Some(language) = buffer.language() {
1627 let leading_whitespace_len = buffer
1628 .reversed_chars_at(start)
1629 .take_while(|c| c.is_whitespace() && *c != '\n')
1630 .map(|c| c.len_utf8())
1631 .sum::<usize>();
1632
1633 let trailing_whitespace_len = buffer
1634 .chars_at(end)
1635 .take_while(|c| c.is_whitespace() && *c != '\n')
1636 .map(|c| c.len_utf8())
1637 .sum::<usize>();
1638
1639 insert_extra_newline = language.brackets().iter().any(|pair| {
1640 let pair_start = pair.start.trim_end();
1641 let pair_end = pair.end.trim_start();
1642
1643 pair.newline
1644 && buffer.contains_str_at(end + trailing_whitespace_len, pair_end)
1645 && buffer.contains_str_at(
1646 (start - leading_whitespace_len).saturating_sub(pair_start.len()),
1647 pair_start,
1648 )
1649 });
1650 }
1651
1652 old_selections.push((
1653 selection.id,
1654 buffer.anchor_after(end),
1655 start..end,
1656 indent,
1657 insert_extra_newline,
1658 ));
1659 }
1660 }
1661
1662 self.buffer.update(cx, |buffer, cx| {
1663 let mut delta = 0_isize;
1664 let mut pending_edit: Option<PendingEdit> = None;
1665 for (_, _, range, indent, insert_extra_newline) in &old_selections {
1666 if pending_edit.as_ref().map_or(false, |pending| {
1667 pending.indent != *indent
1668 || pending.insert_extra_newline != *insert_extra_newline
1669 }) {
1670 let pending = pending_edit.take().unwrap();
1671 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1672 new_text.push('\n');
1673 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1674 if pending.insert_extra_newline {
1675 new_text = new_text.repeat(2);
1676 }
1677 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1678 delta += pending.delta;
1679 }
1680
1681 let start = (range.start as isize + delta) as usize;
1682 let end = (range.end as isize + delta) as usize;
1683 let mut text_len = *indent as usize + 1;
1684 if *insert_extra_newline {
1685 text_len *= 2;
1686 }
1687
1688 let pending = pending_edit.get_or_insert_with(Default::default);
1689 pending.delta += text_len as isize - (end - start) as isize;
1690 pending.indent = *indent;
1691 pending.insert_extra_newline = *insert_extra_newline;
1692 pending.ranges.push(start..end);
1693 }
1694
1695 let pending = pending_edit.unwrap();
1696 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1697 new_text.push('\n');
1698 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1699 if pending.insert_extra_newline {
1700 new_text = new_text.repeat(2);
1701 }
1702 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1703
1704 let buffer = buffer.read(cx);
1705 self.selections = self
1706 .selections
1707 .iter()
1708 .cloned()
1709 .zip(old_selections)
1710 .map(
1711 |(mut new_selection, (_, end_anchor, _, _, insert_extra_newline))| {
1712 let mut cursor = end_anchor.to_point(&buffer);
1713 if insert_extra_newline {
1714 cursor.row -= 1;
1715 cursor.column = buffer.line_len(cursor.row);
1716 }
1717 let anchor = buffer.anchor_after(cursor);
1718 new_selection.start = anchor.clone();
1719 new_selection.end = anchor;
1720 new_selection
1721 },
1722 )
1723 .collect();
1724 });
1725
1726 self.request_autoscroll(Autoscroll::Fit, cx);
1727 self.end_transaction(cx);
1728
1729 #[derive(Default)]
1730 struct PendingEdit {
1731 indent: u32,
1732 insert_extra_newline: bool,
1733 delta: isize,
1734 ranges: SmallVec<[Range<usize>; 32]>,
1735 }
1736 }
1737
1738 pub fn insert(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1739 self.start_transaction(cx);
1740
1741 let old_selections = self.local_selections::<usize>(cx);
1742 let selection_anchors = self.buffer.update(cx, |buffer, cx| {
1743 let anchors = {
1744 let snapshot = buffer.read(cx);
1745 old_selections
1746 .iter()
1747 .map(|s| (s.id, s.goal, snapshot.anchor_after(s.end)))
1748 .collect::<Vec<_>>()
1749 };
1750 let edit_ranges = old_selections.iter().map(|s| s.start..s.end);
1751 buffer.edit_with_autoindent(edit_ranges, text, cx);
1752 anchors
1753 });
1754
1755 let selections = {
1756 let snapshot = self.buffer.read(cx).read(cx);
1757 selection_anchors
1758 .into_iter()
1759 .map(|(id, goal, position)| {
1760 let position = position.to_offset(&snapshot);
1761 Selection {
1762 id,
1763 start: position,
1764 end: position,
1765 goal,
1766 reversed: false,
1767 }
1768 })
1769 .collect()
1770 };
1771 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1772 self.end_transaction(cx);
1773 }
1774
1775 fn trigger_completion_on_input(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1776 let selection = self.newest_anchor_selection();
1777 if self
1778 .buffer
1779 .read(cx)
1780 .is_completion_trigger(selection.head(), text, cx)
1781 {
1782 self.show_completions(&ShowCompletions, cx);
1783 } else {
1784 self.hide_context_menu(cx);
1785 }
1786 }
1787
1788 fn autoclose_pairs(&mut self, cx: &mut ViewContext<Self>) {
1789 let selections = self.local_selections::<usize>(cx);
1790 let mut bracket_pair_state = None;
1791 let mut new_selections = None;
1792 self.buffer.update(cx, |buffer, cx| {
1793 let mut snapshot = buffer.snapshot(cx);
1794 let left_biased_selections = selections
1795 .iter()
1796 .map(|selection| Selection {
1797 id: selection.id,
1798 start: snapshot.anchor_before(selection.start),
1799 end: snapshot.anchor_before(selection.end),
1800 reversed: selection.reversed,
1801 goal: selection.goal,
1802 })
1803 .collect::<Vec<_>>();
1804
1805 let autoclose_pair = snapshot.language().and_then(|language| {
1806 let first_selection_start = selections.first().unwrap().start;
1807 let pair = language.brackets().iter().find(|pair| {
1808 snapshot.contains_str_at(
1809 first_selection_start.saturating_sub(pair.start.len()),
1810 &pair.start,
1811 )
1812 });
1813 pair.and_then(|pair| {
1814 let should_autoclose = selections[1..].iter().all(|selection| {
1815 snapshot.contains_str_at(
1816 selection.start.saturating_sub(pair.start.len()),
1817 &pair.start,
1818 )
1819 });
1820
1821 if should_autoclose {
1822 Some(pair.clone())
1823 } else {
1824 None
1825 }
1826 })
1827 });
1828
1829 if let Some(pair) = autoclose_pair {
1830 let selection_ranges = selections
1831 .iter()
1832 .map(|selection| {
1833 let start = selection.start.to_offset(&snapshot);
1834 start..start
1835 })
1836 .collect::<SmallVec<[_; 32]>>();
1837
1838 buffer.edit(selection_ranges, &pair.end, cx);
1839 snapshot = buffer.snapshot(cx);
1840
1841 new_selections = Some(
1842 self.resolve_selections::<usize, _>(left_biased_selections.iter(), &snapshot)
1843 .collect::<Vec<_>>(),
1844 );
1845
1846 if pair.end.len() == 1 {
1847 let mut delta = 0;
1848 bracket_pair_state = Some(BracketPairState {
1849 ranges: selections
1850 .iter()
1851 .map(move |selection| {
1852 let offset = selection.start + delta;
1853 delta += 1;
1854 snapshot.anchor_before(offset)..snapshot.anchor_after(offset)
1855 })
1856 .collect(),
1857 pair,
1858 });
1859 }
1860 }
1861 });
1862
1863 if let Some(new_selections) = new_selections {
1864 self.update_selections(new_selections, None, cx);
1865 }
1866 if let Some(bracket_pair_state) = bracket_pair_state {
1867 self.autoclose_stack.push(bracket_pair_state);
1868 }
1869 }
1870
1871 fn skip_autoclose_end(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
1872 let old_selections = self.local_selections::<usize>(cx);
1873 let autoclose_pair = if let Some(autoclose_pair) = self.autoclose_stack.last() {
1874 autoclose_pair
1875 } else {
1876 return false;
1877 };
1878 if text != autoclose_pair.pair.end {
1879 return false;
1880 }
1881
1882 debug_assert_eq!(old_selections.len(), autoclose_pair.ranges.len());
1883
1884 let buffer = self.buffer.read(cx).snapshot(cx);
1885 if old_selections
1886 .iter()
1887 .zip(autoclose_pair.ranges.iter().map(|r| r.to_offset(&buffer)))
1888 .all(|(selection, autoclose_range)| {
1889 let autoclose_range_end = autoclose_range.end.to_offset(&buffer);
1890 selection.is_empty() && selection.start == autoclose_range_end
1891 })
1892 {
1893 let new_selections = old_selections
1894 .into_iter()
1895 .map(|selection| {
1896 let cursor = selection.start + 1;
1897 Selection {
1898 id: selection.id,
1899 start: cursor,
1900 end: cursor,
1901 reversed: false,
1902 goal: SelectionGoal::None,
1903 }
1904 })
1905 .collect();
1906 self.autoclose_stack.pop();
1907 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1908 true
1909 } else {
1910 false
1911 }
1912 }
1913
1914 fn completion_query(buffer: &MultiBufferSnapshot, position: impl ToOffset) -> Option<String> {
1915 let offset = position.to_offset(buffer);
1916 let (word_range, kind) = buffer.surrounding_word(offset);
1917 if offset > word_range.start && kind == Some(CharKind::Word) {
1918 Some(
1919 buffer
1920 .text_for_range(word_range.start..offset)
1921 .collect::<String>(),
1922 )
1923 } else {
1924 None
1925 }
1926 }
1927
1928 fn show_completions(&mut self, _: &ShowCompletions, cx: &mut ViewContext<Self>) {
1929 if self.pending_rename.is_some() {
1930 return;
1931 }
1932
1933 let project = if let Some(project) = self.project.clone() {
1934 project
1935 } else {
1936 return;
1937 };
1938
1939 let position = self.newest_anchor_selection().head();
1940 let (buffer, buffer_position) = if let Some(output) = self
1941 .buffer
1942 .read(cx)
1943 .text_anchor_for_position(position.clone(), cx)
1944 {
1945 output
1946 } else {
1947 return;
1948 };
1949
1950 let query = Self::completion_query(&self.buffer.read(cx).read(cx), position.clone());
1951 let completions = project.update(cx, |project, cx| {
1952 project.completions(&buffer, buffer_position.clone(), cx)
1953 });
1954
1955 let id = post_inc(&mut self.next_completion_id);
1956 let task = cx.spawn_weak(|this, mut cx| {
1957 async move {
1958 let completions = completions.await?;
1959 if completions.is_empty() {
1960 return Ok(());
1961 }
1962
1963 let mut menu = CompletionsMenu {
1964 id,
1965 initial_position: position,
1966 match_candidates: completions
1967 .iter()
1968 .enumerate()
1969 .map(|(id, completion)| {
1970 StringMatchCandidate::new(
1971 id,
1972 completion.label.text[completion.label.filter_range.clone()].into(),
1973 )
1974 })
1975 .collect(),
1976 buffer,
1977 completions: completions.into(),
1978 matches: Vec::new().into(),
1979 selected_item: 0,
1980 list: Default::default(),
1981 };
1982
1983 menu.filter(query.as_deref(), cx.background()).await;
1984
1985 if let Some(this) = this.upgrade(&cx) {
1986 this.update(&mut cx, |this, cx| {
1987 match this.context_menu.as_ref() {
1988 None => {}
1989 Some(ContextMenu::Completions(prev_menu)) => {
1990 if prev_menu.id > menu.id {
1991 return;
1992 }
1993 }
1994 _ => return,
1995 }
1996
1997 this.completion_tasks.retain(|(id, _)| *id > menu.id);
1998 if this.focused {
1999 this.show_context_menu(ContextMenu::Completions(menu), cx);
2000 }
2001
2002 cx.notify();
2003 });
2004 }
2005 Ok::<_, anyhow::Error>(())
2006 }
2007 .log_err()
2008 });
2009 self.completion_tasks.push((id, task));
2010 }
2011
2012 pub fn confirm_completion(
2013 &mut self,
2014 ConfirmCompletion(completion_ix): &ConfirmCompletion,
2015 cx: &mut ViewContext<Self>,
2016 ) -> Option<Task<Result<()>>> {
2017 use language::ToOffset as _;
2018
2019 let completions_menu = if let ContextMenu::Completions(menu) = self.hide_context_menu(cx)? {
2020 menu
2021 } else {
2022 return None;
2023 };
2024
2025 let mat = completions_menu
2026 .matches
2027 .get(completion_ix.unwrap_or(completions_menu.selected_item))?;
2028 let buffer_handle = completions_menu.buffer;
2029 let completion = completions_menu.completions.get(mat.candidate_id)?;
2030
2031 let snippet;
2032 let text;
2033 if completion.is_snippet() {
2034 snippet = Some(Snippet::parse(&completion.new_text).log_err()?);
2035 text = snippet.as_ref().unwrap().text.clone();
2036 } else {
2037 snippet = None;
2038 text = completion.new_text.clone();
2039 };
2040 let buffer = buffer_handle.read(cx);
2041 let old_range = completion.old_range.to_offset(&buffer);
2042 let old_text = buffer.text_for_range(old_range.clone()).collect::<String>();
2043
2044 let selections = self.local_selections::<usize>(cx);
2045 let newest_selection = self.newest_anchor_selection();
2046 if newest_selection.start.buffer_id != Some(buffer_handle.id()) {
2047 return None;
2048 }
2049
2050 let lookbehind = newest_selection
2051 .start
2052 .text_anchor
2053 .to_offset(buffer)
2054 .saturating_sub(old_range.start);
2055 let lookahead = old_range
2056 .end
2057 .saturating_sub(newest_selection.end.text_anchor.to_offset(buffer));
2058 let mut common_prefix_len = old_text
2059 .bytes()
2060 .zip(text.bytes())
2061 .take_while(|(a, b)| a == b)
2062 .count();
2063
2064 let snapshot = self.buffer.read(cx).snapshot(cx);
2065 let mut ranges = Vec::new();
2066 for selection in &selections {
2067 if snapshot.contains_str_at(selection.start.saturating_sub(lookbehind), &old_text) {
2068 let start = selection.start.saturating_sub(lookbehind);
2069 let end = selection.end + lookahead;
2070 ranges.push(start + common_prefix_len..end);
2071 } else {
2072 common_prefix_len = 0;
2073 ranges.clear();
2074 ranges.extend(selections.iter().map(|s| {
2075 if s.id == newest_selection.id {
2076 old_range.clone()
2077 } else {
2078 s.start..s.end
2079 }
2080 }));
2081 break;
2082 }
2083 }
2084 let text = &text[common_prefix_len..];
2085
2086 self.start_transaction(cx);
2087 if let Some(mut snippet) = snippet {
2088 snippet.text = text.to_string();
2089 for tabstop in snippet.tabstops.iter_mut().flatten() {
2090 tabstop.start -= common_prefix_len as isize;
2091 tabstop.end -= common_prefix_len as isize;
2092 }
2093
2094 self.insert_snippet(&ranges, snippet, cx).log_err();
2095 } else {
2096 self.buffer.update(cx, |buffer, cx| {
2097 buffer.edit_with_autoindent(ranges, text, cx);
2098 });
2099 }
2100 self.end_transaction(cx);
2101
2102 let project = self.project.clone()?;
2103 let apply_edits = project.update(cx, |project, cx| {
2104 project.apply_additional_edits_for_completion(
2105 buffer_handle,
2106 completion.clone(),
2107 true,
2108 cx,
2109 )
2110 });
2111 Some(cx.foreground().spawn(async move {
2112 apply_edits.await?;
2113 Ok(())
2114 }))
2115 }
2116
2117 pub fn toggle_code_actions(
2118 &mut self,
2119 &ToggleCodeActions(deployed_from_indicator): &ToggleCodeActions,
2120 cx: &mut ViewContext<Self>,
2121 ) {
2122 if matches!(
2123 self.context_menu.as_ref(),
2124 Some(ContextMenu::CodeActions(_))
2125 ) {
2126 self.context_menu.take();
2127 cx.notify();
2128 return;
2129 }
2130
2131 let mut task = self.code_actions_task.take();
2132 cx.spawn_weak(|this, mut cx| async move {
2133 while let Some(prev_task) = task {
2134 prev_task.await;
2135 task = this
2136 .upgrade(&cx)
2137 .and_then(|this| this.update(&mut cx, |this, _| this.code_actions_task.take()));
2138 }
2139
2140 if let Some(this) = this.upgrade(&cx) {
2141 this.update(&mut cx, |this, cx| {
2142 if this.focused {
2143 if let Some((buffer, actions)) = this.available_code_actions.clone() {
2144 this.show_context_menu(
2145 ContextMenu::CodeActions(CodeActionsMenu {
2146 buffer,
2147 actions,
2148 selected_item: Default::default(),
2149 list: Default::default(),
2150 deployed_from_indicator,
2151 }),
2152 cx,
2153 );
2154 }
2155 }
2156 })
2157 }
2158 Ok::<_, anyhow::Error>(())
2159 })
2160 .detach_and_log_err(cx);
2161 }
2162
2163 pub fn confirm_code_action(
2164 workspace: &mut Workspace,
2165 ConfirmCodeAction(action_ix): &ConfirmCodeAction,
2166 cx: &mut ViewContext<Workspace>,
2167 ) -> Option<Task<Result<()>>> {
2168 let editor = workspace.active_item(cx)?.act_as::<Editor>(cx)?;
2169 let actions_menu = if let ContextMenu::CodeActions(menu) =
2170 editor.update(cx, |editor, cx| editor.hide_context_menu(cx))?
2171 {
2172 menu
2173 } else {
2174 return None;
2175 };
2176 let action_ix = action_ix.unwrap_or(actions_menu.selected_item);
2177 let action = actions_menu.actions.get(action_ix)?.clone();
2178 let title = action.lsp_action.title.clone();
2179 let buffer = actions_menu.buffer;
2180
2181 let apply_code_actions = workspace.project().clone().update(cx, |project, cx| {
2182 project.apply_code_action(buffer, action, true, cx)
2183 });
2184 Some(cx.spawn(|workspace, cx| async move {
2185 let project_transaction = apply_code_actions.await?;
2186 Self::open_project_transaction(editor, workspace, project_transaction, title, cx).await
2187 }))
2188 }
2189
2190 async fn open_project_transaction(
2191 this: ViewHandle<Editor>,
2192 workspace: ViewHandle<Workspace>,
2193 transaction: ProjectTransaction,
2194 title: String,
2195 mut cx: AsyncAppContext,
2196 ) -> Result<()> {
2197 let replica_id = this.read_with(&cx, |this, cx| this.replica_id(cx));
2198
2199 // If the code action's edits are all contained within this editor, then
2200 // avoid opening a new editor to display them.
2201 let mut entries = transaction.0.iter();
2202 if let Some((buffer, transaction)) = entries.next() {
2203 if entries.next().is_none() {
2204 let excerpt = this.read_with(&cx, |editor, cx| {
2205 editor
2206 .buffer()
2207 .read(cx)
2208 .excerpt_containing(editor.newest_anchor_selection().head(), cx)
2209 });
2210 if let Some((excerpted_buffer, excerpt_range)) = excerpt {
2211 if excerpted_buffer == *buffer {
2212 let snapshot = buffer.read_with(&cx, |buffer, _| buffer.snapshot());
2213 let excerpt_range = excerpt_range.to_offset(&snapshot);
2214 if snapshot
2215 .edited_ranges_for_transaction(transaction)
2216 .all(|range| {
2217 excerpt_range.start <= range.start && excerpt_range.end >= range.end
2218 })
2219 {
2220 return Ok(());
2221 }
2222 }
2223 }
2224 }
2225 }
2226
2227 let mut ranges_to_highlight = Vec::new();
2228 let excerpt_buffer = cx.add_model(|cx| {
2229 let mut multibuffer = MultiBuffer::new(replica_id).with_title(title);
2230 for (buffer, transaction) in &transaction.0 {
2231 let snapshot = buffer.read(cx).snapshot();
2232 ranges_to_highlight.extend(
2233 multibuffer.push_excerpts_with_context_lines(
2234 buffer.clone(),
2235 snapshot
2236 .edited_ranges_for_transaction::<usize>(transaction)
2237 .collect(),
2238 1,
2239 cx,
2240 ),
2241 );
2242 }
2243 multibuffer.push_transaction(&transaction.0);
2244 multibuffer
2245 });
2246
2247 workspace.update(&mut cx, |workspace, cx| {
2248 let editor = workspace.open_item(MultiBufferItemHandle(excerpt_buffer), cx);
2249 if let Some(editor) = editor.act_as::<Self>(cx) {
2250 editor.update(cx, |editor, cx| {
2251 let settings = (editor.build_settings)(cx);
2252 editor.highlight_ranges::<Self>(
2253 ranges_to_highlight,
2254 settings.style.highlighted_line_background,
2255 cx,
2256 );
2257 });
2258 }
2259 });
2260
2261 Ok(())
2262 }
2263
2264 fn refresh_code_actions(&mut self, cx: &mut ViewContext<Self>) -> Option<()> {
2265 let project = self.project.as_ref()?;
2266 let buffer = self.buffer.read(cx);
2267 let newest_selection = self.newest_anchor_selection().clone();
2268 let (start_buffer, start) = buffer.text_anchor_for_position(newest_selection.start, cx)?;
2269 let (end_buffer, end) = buffer.text_anchor_for_position(newest_selection.end, cx)?;
2270 if start_buffer != end_buffer {
2271 return None;
2272 }
2273
2274 let actions = project.update(cx, |project, cx| {
2275 project.code_actions(&start_buffer, start..end, cx)
2276 });
2277 self.code_actions_task = Some(cx.spawn_weak(|this, mut cx| async move {
2278 let actions = actions.await;
2279 if let Some(this) = this.upgrade(&cx) {
2280 this.update(&mut cx, |this, cx| {
2281 this.available_code_actions = actions.log_err().and_then(|actions| {
2282 if actions.is_empty() {
2283 None
2284 } else {
2285 Some((start_buffer, actions.into()))
2286 }
2287 });
2288 cx.notify();
2289 })
2290 }
2291 }));
2292 None
2293 }
2294
2295 pub fn render_code_actions_indicator(&self, cx: &mut ViewContext<Self>) -> Option<ElementBox> {
2296 if self.available_code_actions.is_some() {
2297 enum Tag {}
2298 let style = (self.build_settings)(cx).style;
2299 Some(
2300 MouseEventHandler::new::<Tag, _, _>(0, cx, |_, _| {
2301 Svg::new("icons/zap.svg")
2302 .with_color(style.code_actions_indicator)
2303 .boxed()
2304 })
2305 .with_cursor_style(CursorStyle::PointingHand)
2306 .with_padding(Padding::uniform(3.))
2307 .on_mouse_down(|cx| {
2308 cx.dispatch_action(ToggleCodeActions(true));
2309 })
2310 .boxed(),
2311 )
2312 } else {
2313 None
2314 }
2315 }
2316
2317 pub fn context_menu_visible(&self) -> bool {
2318 self.context_menu
2319 .as_ref()
2320 .map_or(false, |menu| menu.visible())
2321 }
2322
2323 pub fn render_context_menu(
2324 &self,
2325 cursor_position: DisplayPoint,
2326 cx: &AppContext,
2327 ) -> Option<(DisplayPoint, ElementBox)> {
2328 self.context_menu
2329 .as_ref()
2330 .map(|menu| menu.render(cursor_position, self.build_settings.clone(), cx))
2331 }
2332
2333 fn show_context_menu(&mut self, menu: ContextMenu, cx: &mut ViewContext<Self>) {
2334 if !matches!(menu, ContextMenu::Completions(_)) {
2335 self.completion_tasks.clear();
2336 }
2337 self.context_menu = Some(menu);
2338 cx.notify();
2339 }
2340
2341 fn hide_context_menu(&mut self, cx: &mut ViewContext<Self>) -> Option<ContextMenu> {
2342 cx.notify();
2343 self.completion_tasks.clear();
2344 self.context_menu.take()
2345 }
2346
2347 pub fn insert_snippet(
2348 &mut self,
2349 insertion_ranges: &[Range<usize>],
2350 snippet: Snippet,
2351 cx: &mut ViewContext<Self>,
2352 ) -> Result<()> {
2353 let tabstops = self.buffer.update(cx, |buffer, cx| {
2354 buffer.edit_with_autoindent(insertion_ranges.iter().cloned(), &snippet.text, cx);
2355
2356 let snapshot = &*buffer.read(cx);
2357 let snippet = &snippet;
2358 snippet
2359 .tabstops
2360 .iter()
2361 .map(|tabstop| {
2362 let mut tabstop_ranges = tabstop
2363 .iter()
2364 .flat_map(|tabstop_range| {
2365 let mut delta = 0 as isize;
2366 insertion_ranges.iter().map(move |insertion_range| {
2367 let insertion_start = insertion_range.start as isize + delta;
2368 delta +=
2369 snippet.text.len() as isize - insertion_range.len() as isize;
2370
2371 let start = snapshot.anchor_before(
2372 (insertion_start + tabstop_range.start) as usize,
2373 );
2374 let end = snapshot
2375 .anchor_after((insertion_start + tabstop_range.end) as usize);
2376 start..end
2377 })
2378 })
2379 .collect::<Vec<_>>();
2380 tabstop_ranges
2381 .sort_unstable_by(|a, b| a.start.cmp(&b.start, snapshot).unwrap());
2382 tabstop_ranges
2383 })
2384 .collect::<Vec<_>>()
2385 });
2386
2387 if let Some(tabstop) = tabstops.first() {
2388 self.select_ranges(tabstop.iter().cloned(), Some(Autoscroll::Fit), cx);
2389 self.snippet_stack.push(SnippetState {
2390 active_index: 0,
2391 ranges: tabstops,
2392 });
2393 }
2394
2395 Ok(())
2396 }
2397
2398 pub fn move_to_next_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) -> bool {
2399 self.move_to_snippet_tabstop(Bias::Right, cx)
2400 }
2401
2402 pub fn move_to_prev_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) {
2403 self.move_to_snippet_tabstop(Bias::Left, cx);
2404 }
2405
2406 pub fn move_to_snippet_tabstop(&mut self, bias: Bias, cx: &mut ViewContext<Self>) -> bool {
2407 let buffer = self.buffer.read(cx).snapshot(cx);
2408
2409 if let Some(snippet) = self.snippet_stack.last_mut() {
2410 match bias {
2411 Bias::Left => {
2412 if snippet.active_index > 0 {
2413 snippet.active_index -= 1;
2414 } else {
2415 return false;
2416 }
2417 }
2418 Bias::Right => {
2419 if snippet.active_index + 1 < snippet.ranges.len() {
2420 snippet.active_index += 1;
2421 } else {
2422 return false;
2423 }
2424 }
2425 }
2426 if let Some(current_ranges) = snippet.ranges.get(snippet.active_index) {
2427 let new_selections = current_ranges
2428 .iter()
2429 .map(|new_range| {
2430 let new_range = new_range.to_offset(&buffer);
2431 Selection {
2432 id: post_inc(&mut self.next_selection_id),
2433 start: new_range.start,
2434 end: new_range.end,
2435 reversed: false,
2436 goal: SelectionGoal::None,
2437 }
2438 })
2439 .collect();
2440
2441 // Remove the snippet state when moving to the last tabstop.
2442 if snippet.active_index + 1 == snippet.ranges.len() {
2443 self.snippet_stack.pop();
2444 }
2445
2446 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2447 return true;
2448 }
2449 self.snippet_stack.pop();
2450 }
2451
2452 false
2453 }
2454
2455 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
2456 self.start_transaction(cx);
2457 self.select_all(&SelectAll, cx);
2458 self.insert("", cx);
2459 self.end_transaction(cx);
2460 }
2461
2462 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
2463 self.start_transaction(cx);
2464 let mut selections = self.local_selections::<Point>(cx);
2465 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2466 for selection in &mut selections {
2467 if selection.is_empty() {
2468 let head = selection.head().to_display_point(&display_map);
2469 let cursor = movement::left(&display_map, head)
2470 .unwrap()
2471 .to_point(&display_map);
2472 selection.set_head(cursor);
2473 selection.goal = SelectionGoal::None;
2474 }
2475 }
2476 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2477 self.insert("", cx);
2478 self.end_transaction(cx);
2479 }
2480
2481 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
2482 self.start_transaction(cx);
2483 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2484 let mut selections = self.local_selections::<Point>(cx);
2485 for selection in &mut selections {
2486 if selection.is_empty() {
2487 let head = selection.head().to_display_point(&display_map);
2488 let cursor = movement::right(&display_map, head)
2489 .unwrap()
2490 .to_point(&display_map);
2491 selection.set_head(cursor);
2492 selection.goal = SelectionGoal::None;
2493 }
2494 }
2495 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2496 self.insert(&"", cx);
2497 self.end_transaction(cx);
2498 }
2499
2500 pub fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
2501 if self.move_to_next_snippet_tabstop(cx) {
2502 return;
2503 }
2504
2505 self.start_transaction(cx);
2506 let tab_size = (self.build_settings)(cx).tab_size;
2507 let mut selections = self.local_selections::<Point>(cx);
2508 let mut last_indent = None;
2509 self.buffer.update(cx, |buffer, cx| {
2510 for selection in &mut selections {
2511 if selection.is_empty() {
2512 let char_column = buffer
2513 .read(cx)
2514 .text_for_range(Point::new(selection.start.row, 0)..selection.start)
2515 .flat_map(str::chars)
2516 .count();
2517 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
2518 buffer.edit(
2519 [selection.start..selection.start],
2520 " ".repeat(chars_to_next_tab_stop),
2521 cx,
2522 );
2523 selection.start.column += chars_to_next_tab_stop as u32;
2524 selection.end = selection.start;
2525 } else {
2526 let mut start_row = selection.start.row;
2527 let mut end_row = selection.end.row + 1;
2528
2529 // If a selection ends at the beginning of a line, don't indent
2530 // that last line.
2531 if selection.end.column == 0 {
2532 end_row -= 1;
2533 }
2534
2535 // Avoid re-indenting a row that has already been indented by a
2536 // previous selection, but still update this selection's column
2537 // to reflect that indentation.
2538 if let Some((last_indent_row, last_indent_len)) = last_indent {
2539 if last_indent_row == selection.start.row {
2540 selection.start.column += last_indent_len;
2541 start_row += 1;
2542 }
2543 if last_indent_row == selection.end.row {
2544 selection.end.column += last_indent_len;
2545 }
2546 }
2547
2548 for row in start_row..end_row {
2549 let indent_column = buffer.read(cx).indent_column_for_line(row) as usize;
2550 let columns_to_next_tab_stop = tab_size - (indent_column % tab_size);
2551 let row_start = Point::new(row, 0);
2552 buffer.edit(
2553 [row_start..row_start],
2554 " ".repeat(columns_to_next_tab_stop),
2555 cx,
2556 );
2557
2558 // Update this selection's endpoints to reflect the indentation.
2559 if row == selection.start.row {
2560 selection.start.column += columns_to_next_tab_stop as u32;
2561 }
2562 if row == selection.end.row {
2563 selection.end.column += columns_to_next_tab_stop as u32;
2564 }
2565
2566 last_indent = Some((row, columns_to_next_tab_stop as u32));
2567 }
2568 }
2569 }
2570 });
2571
2572 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2573 self.end_transaction(cx);
2574 }
2575
2576 pub fn outdent(&mut self, _: &Outdent, cx: &mut ViewContext<Self>) {
2577 if !self.snippet_stack.is_empty() {
2578 self.move_to_prev_snippet_tabstop(cx);
2579 return;
2580 }
2581
2582 self.start_transaction(cx);
2583 let tab_size = (self.build_settings)(cx).tab_size;
2584 let selections = self.local_selections::<Point>(cx);
2585 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2586 let mut deletion_ranges = Vec::new();
2587 let mut last_outdent = None;
2588 {
2589 let buffer = self.buffer.read(cx).read(cx);
2590 for selection in &selections {
2591 let mut rows = selection.spanned_rows(false, &display_map);
2592
2593 // Avoid re-outdenting a row that has already been outdented by a
2594 // previous selection.
2595 if let Some(last_row) = last_outdent {
2596 if last_row == rows.start {
2597 rows.start += 1;
2598 }
2599 }
2600
2601 for row in rows {
2602 let column = buffer.indent_column_for_line(row) as usize;
2603 if column > 0 {
2604 let mut deletion_len = (column % tab_size) as u32;
2605 if deletion_len == 0 {
2606 deletion_len = tab_size as u32;
2607 }
2608 deletion_ranges.push(Point::new(row, 0)..Point::new(row, deletion_len));
2609 last_outdent = Some(row);
2610 }
2611 }
2612 }
2613 }
2614 self.buffer.update(cx, |buffer, cx| {
2615 buffer.edit(deletion_ranges, "", cx);
2616 });
2617
2618 self.update_selections(
2619 self.local_selections::<usize>(cx),
2620 Some(Autoscroll::Fit),
2621 cx,
2622 );
2623 self.end_transaction(cx);
2624 }
2625
2626 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
2627 self.start_transaction(cx);
2628
2629 let selections = self.local_selections::<Point>(cx);
2630 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2631 let buffer = self.buffer.read(cx).snapshot(cx);
2632
2633 let mut new_cursors = Vec::new();
2634 let mut edit_ranges = Vec::new();
2635 let mut selections = selections.iter().peekable();
2636 while let Some(selection) = selections.next() {
2637 let mut rows = selection.spanned_rows(false, &display_map);
2638 let goal_display_column = selection.head().to_display_point(&display_map).column();
2639
2640 // Accumulate contiguous regions of rows that we want to delete.
2641 while let Some(next_selection) = selections.peek() {
2642 let next_rows = next_selection.spanned_rows(false, &display_map);
2643 if next_rows.start <= rows.end {
2644 rows.end = next_rows.end;
2645 selections.next().unwrap();
2646 } else {
2647 break;
2648 }
2649 }
2650
2651 let mut edit_start = Point::new(rows.start, 0).to_offset(&buffer);
2652 let edit_end;
2653 let cursor_buffer_row;
2654 if buffer.max_point().row >= rows.end {
2655 // If there's a line after the range, delete the \n from the end of the row range
2656 // and position the cursor on the next line.
2657 edit_end = Point::new(rows.end, 0).to_offset(&buffer);
2658 cursor_buffer_row = rows.end;
2659 } else {
2660 // If there isn't a line after the range, delete the \n from the line before the
2661 // start of the row range and position the cursor there.
2662 edit_start = edit_start.saturating_sub(1);
2663 edit_end = buffer.len();
2664 cursor_buffer_row = rows.start.saturating_sub(1);
2665 }
2666
2667 let mut cursor = Point::new(cursor_buffer_row, 0).to_display_point(&display_map);
2668 *cursor.column_mut() =
2669 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
2670
2671 new_cursors.push((
2672 selection.id,
2673 buffer.anchor_after(cursor.to_point(&display_map)),
2674 ));
2675 edit_ranges.push(edit_start..edit_end);
2676 }
2677
2678 let buffer = self.buffer.update(cx, |buffer, cx| {
2679 buffer.edit(edit_ranges, "", cx);
2680 buffer.snapshot(cx)
2681 });
2682 let new_selections = new_cursors
2683 .into_iter()
2684 .map(|(id, cursor)| {
2685 let cursor = cursor.to_point(&buffer);
2686 Selection {
2687 id,
2688 start: cursor,
2689 end: cursor,
2690 reversed: false,
2691 goal: SelectionGoal::None,
2692 }
2693 })
2694 .collect();
2695 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2696 self.end_transaction(cx);
2697 }
2698
2699 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
2700 self.start_transaction(cx);
2701
2702 let selections = self.local_selections::<Point>(cx);
2703 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2704 let buffer = &display_map.buffer_snapshot;
2705
2706 let mut edits = Vec::new();
2707 let mut selections_iter = selections.iter().peekable();
2708 while let Some(selection) = selections_iter.next() {
2709 // Avoid duplicating the same lines twice.
2710 let mut rows = selection.spanned_rows(false, &display_map);
2711
2712 while let Some(next_selection) = selections_iter.peek() {
2713 let next_rows = next_selection.spanned_rows(false, &display_map);
2714 if next_rows.start <= rows.end - 1 {
2715 rows.end = next_rows.end;
2716 selections_iter.next().unwrap();
2717 } else {
2718 break;
2719 }
2720 }
2721
2722 // Copy the text from the selected row region and splice it at the start of the region.
2723 let start = Point::new(rows.start, 0);
2724 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
2725 let text = buffer
2726 .text_for_range(start..end)
2727 .chain(Some("\n"))
2728 .collect::<String>();
2729 edits.push((start, text, rows.len() as u32));
2730 }
2731
2732 self.buffer.update(cx, |buffer, cx| {
2733 for (point, text, _) in edits.into_iter().rev() {
2734 buffer.edit(Some(point..point), text, cx);
2735 }
2736 });
2737
2738 self.request_autoscroll(Autoscroll::Fit, cx);
2739 self.end_transaction(cx);
2740 }
2741
2742 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
2743 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2744 let buffer = self.buffer.read(cx).snapshot(cx);
2745
2746 let mut edits = Vec::new();
2747 let mut unfold_ranges = Vec::new();
2748 let mut refold_ranges = Vec::new();
2749
2750 let selections = self.local_selections::<Point>(cx);
2751 let mut selections = selections.iter().peekable();
2752 let mut contiguous_row_selections = Vec::new();
2753 let mut new_selections = Vec::new();
2754
2755 while let Some(selection) = selections.next() {
2756 // Find all the selections that span a contiguous row range
2757 contiguous_row_selections.push(selection.clone());
2758 let start_row = selection.start.row;
2759 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
2760 display_map.next_line_boundary(selection.end).0.row + 1
2761 } else {
2762 selection.end.row
2763 };
2764
2765 while let Some(next_selection) = selections.peek() {
2766 if next_selection.start.row <= end_row {
2767 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
2768 display_map.next_line_boundary(next_selection.end).0.row + 1
2769 } else {
2770 next_selection.end.row
2771 };
2772 contiguous_row_selections.push(selections.next().unwrap().clone());
2773 } else {
2774 break;
2775 }
2776 }
2777
2778 // Move the text spanned by the row range to be before the line preceding the row range
2779 if start_row > 0 {
2780 let range_to_move = Point::new(start_row - 1, buffer.line_len(start_row - 1))
2781 ..Point::new(end_row - 1, buffer.line_len(end_row - 1));
2782 let insertion_point = display_map
2783 .prev_line_boundary(Point::new(start_row - 1, 0))
2784 .0;
2785
2786 // Don't move lines across excerpts
2787 if buffer
2788 .excerpt_boundaries_in_range((
2789 Bound::Excluded(insertion_point),
2790 Bound::Included(range_to_move.end),
2791 ))
2792 .next()
2793 .is_none()
2794 {
2795 let text = buffer
2796 .text_for_range(range_to_move.clone())
2797 .flat_map(|s| s.chars())
2798 .skip(1)
2799 .chain(['\n'])
2800 .collect::<String>();
2801
2802 edits.push((
2803 buffer.anchor_after(range_to_move.start)
2804 ..buffer.anchor_before(range_to_move.end),
2805 String::new(),
2806 ));
2807 let insertion_anchor = buffer.anchor_after(insertion_point);
2808 edits.push((insertion_anchor.clone()..insertion_anchor, text));
2809
2810 let row_delta = range_to_move.start.row - insertion_point.row + 1;
2811
2812 // Move selections up
2813 new_selections.extend(contiguous_row_selections.drain(..).map(
2814 |mut selection| {
2815 selection.start.row -= row_delta;
2816 selection.end.row -= row_delta;
2817 selection
2818 },
2819 ));
2820
2821 // Move folds up
2822 unfold_ranges.push(range_to_move.clone());
2823 for fold in display_map.folds_in_range(
2824 buffer.anchor_before(range_to_move.start)
2825 ..buffer.anchor_after(range_to_move.end),
2826 ) {
2827 let mut start = fold.start.to_point(&buffer);
2828 let mut end = fold.end.to_point(&buffer);
2829 start.row -= row_delta;
2830 end.row -= row_delta;
2831 refold_ranges.push(start..end);
2832 }
2833 }
2834 }
2835
2836 // If we didn't move line(s), preserve the existing selections
2837 new_selections.extend(contiguous_row_selections.drain(..));
2838 }
2839
2840 self.start_transaction(cx);
2841 self.unfold_ranges(unfold_ranges, cx);
2842 self.buffer.update(cx, |buffer, cx| {
2843 for (range, text) in edits {
2844 buffer.edit([range], text, cx);
2845 }
2846 });
2847 self.fold_ranges(refold_ranges, cx);
2848 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2849 self.end_transaction(cx);
2850 }
2851
2852 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
2853 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2854 let buffer = self.buffer.read(cx).snapshot(cx);
2855
2856 let mut edits = Vec::new();
2857 let mut unfold_ranges = Vec::new();
2858 let mut refold_ranges = Vec::new();
2859
2860 let selections = self.local_selections::<Point>(cx);
2861 let mut selections = selections.iter().peekable();
2862 let mut contiguous_row_selections = Vec::new();
2863 let mut new_selections = Vec::new();
2864
2865 while let Some(selection) = selections.next() {
2866 // Find all the selections that span a contiguous row range
2867 contiguous_row_selections.push(selection.clone());
2868 let start_row = selection.start.row;
2869 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
2870 display_map.next_line_boundary(selection.end).0.row + 1
2871 } else {
2872 selection.end.row
2873 };
2874
2875 while let Some(next_selection) = selections.peek() {
2876 if next_selection.start.row <= end_row {
2877 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
2878 display_map.next_line_boundary(next_selection.end).0.row + 1
2879 } else {
2880 next_selection.end.row
2881 };
2882 contiguous_row_selections.push(selections.next().unwrap().clone());
2883 } else {
2884 break;
2885 }
2886 }
2887
2888 // Move the text spanned by the row range to be after the last line of the row range
2889 if end_row <= buffer.max_point().row {
2890 let range_to_move = Point::new(start_row, 0)..Point::new(end_row, 0);
2891 let insertion_point = display_map.next_line_boundary(Point::new(end_row, 0)).0;
2892
2893 // Don't move lines across excerpt boundaries
2894 if buffer
2895 .excerpt_boundaries_in_range((
2896 Bound::Excluded(range_to_move.start),
2897 Bound::Included(insertion_point),
2898 ))
2899 .next()
2900 .is_none()
2901 {
2902 let mut text = String::from("\n");
2903 text.extend(buffer.text_for_range(range_to_move.clone()));
2904 text.pop(); // Drop trailing newline
2905 edits.push((
2906 buffer.anchor_after(range_to_move.start)
2907 ..buffer.anchor_before(range_to_move.end),
2908 String::new(),
2909 ));
2910 let insertion_anchor = buffer.anchor_after(insertion_point);
2911 edits.push((insertion_anchor.clone()..insertion_anchor, text));
2912
2913 let row_delta = insertion_point.row - range_to_move.end.row + 1;
2914
2915 // Move selections down
2916 new_selections.extend(contiguous_row_selections.drain(..).map(
2917 |mut selection| {
2918 selection.start.row += row_delta;
2919 selection.end.row += row_delta;
2920 selection
2921 },
2922 ));
2923
2924 // Move folds down
2925 unfold_ranges.push(range_to_move.clone());
2926 for fold in display_map.folds_in_range(
2927 buffer.anchor_before(range_to_move.start)
2928 ..buffer.anchor_after(range_to_move.end),
2929 ) {
2930 let mut start = fold.start.to_point(&buffer);
2931 let mut end = fold.end.to_point(&buffer);
2932 start.row += row_delta;
2933 end.row += row_delta;
2934 refold_ranges.push(start..end);
2935 }
2936 }
2937 }
2938
2939 // If we didn't move line(s), preserve the existing selections
2940 new_selections.extend(contiguous_row_selections.drain(..));
2941 }
2942
2943 self.start_transaction(cx);
2944 self.unfold_ranges(unfold_ranges, cx);
2945 self.buffer.update(cx, |buffer, cx| {
2946 for (range, text) in edits {
2947 buffer.edit([range], text, cx);
2948 }
2949 });
2950 self.fold_ranges(refold_ranges, cx);
2951 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2952 self.end_transaction(cx);
2953 }
2954
2955 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
2956 self.start_transaction(cx);
2957 let mut text = String::new();
2958 let mut selections = self.local_selections::<Point>(cx);
2959 let mut clipboard_selections = Vec::with_capacity(selections.len());
2960 {
2961 let buffer = self.buffer.read(cx).read(cx);
2962 let max_point = buffer.max_point();
2963 for selection in &mut selections {
2964 let is_entire_line = selection.is_empty();
2965 if is_entire_line {
2966 selection.start = Point::new(selection.start.row, 0);
2967 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
2968 selection.goal = SelectionGoal::None;
2969 }
2970 let mut len = 0;
2971 for chunk in buffer.text_for_range(selection.start..selection.end) {
2972 text.push_str(chunk);
2973 len += chunk.len();
2974 }
2975 clipboard_selections.push(ClipboardSelection {
2976 len,
2977 is_entire_line,
2978 });
2979 }
2980 }
2981 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2982 self.insert("", cx);
2983 self.end_transaction(cx);
2984
2985 cx.as_mut()
2986 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
2987 }
2988
2989 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
2990 let selections = self.local_selections::<Point>(cx);
2991 let mut text = String::new();
2992 let mut clipboard_selections = Vec::with_capacity(selections.len());
2993 {
2994 let buffer = self.buffer.read(cx).read(cx);
2995 let max_point = buffer.max_point();
2996 for selection in selections.iter() {
2997 let mut start = selection.start;
2998 let mut end = selection.end;
2999 let is_entire_line = selection.is_empty();
3000 if is_entire_line {
3001 start = Point::new(start.row, 0);
3002 end = cmp::min(max_point, Point::new(start.row + 1, 0));
3003 }
3004 let mut len = 0;
3005 for chunk in buffer.text_for_range(start..end) {
3006 text.push_str(chunk);
3007 len += chunk.len();
3008 }
3009 clipboard_selections.push(ClipboardSelection {
3010 len,
3011 is_entire_line,
3012 });
3013 }
3014 }
3015
3016 cx.as_mut()
3017 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
3018 }
3019
3020 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
3021 if let Some(item) = cx.as_mut().read_from_clipboard() {
3022 let clipboard_text = item.text();
3023 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
3024 let mut selections = self.local_selections::<usize>(cx);
3025 let all_selections_were_entire_line =
3026 clipboard_selections.iter().all(|s| s.is_entire_line);
3027 if clipboard_selections.len() != selections.len() {
3028 clipboard_selections.clear();
3029 }
3030
3031 let mut delta = 0_isize;
3032 let mut start_offset = 0;
3033 for (i, selection) in selections.iter_mut().enumerate() {
3034 let to_insert;
3035 let entire_line;
3036 if let Some(clipboard_selection) = clipboard_selections.get(i) {
3037 let end_offset = start_offset + clipboard_selection.len;
3038 to_insert = &clipboard_text[start_offset..end_offset];
3039 entire_line = clipboard_selection.is_entire_line;
3040 start_offset = end_offset
3041 } else {
3042 to_insert = clipboard_text.as_str();
3043 entire_line = all_selections_were_entire_line;
3044 }
3045
3046 selection.start = (selection.start as isize + delta) as usize;
3047 selection.end = (selection.end as isize + delta) as usize;
3048
3049 self.buffer.update(cx, |buffer, cx| {
3050 // If the corresponding selection was empty when this slice of the
3051 // clipboard text was written, then the entire line containing the
3052 // selection was copied. If this selection is also currently empty,
3053 // then paste the line before the current line of the buffer.
3054 let range = if selection.is_empty() && entire_line {
3055 let column = selection.start.to_point(&buffer.read(cx)).column as usize;
3056 let line_start = selection.start - column;
3057 line_start..line_start
3058 } else {
3059 selection.start..selection.end
3060 };
3061
3062 delta += to_insert.len() as isize - range.len() as isize;
3063 buffer.edit([range], to_insert, cx);
3064 selection.start += to_insert.len();
3065 selection.end = selection.start;
3066 });
3067 }
3068 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3069 } else {
3070 self.insert(clipboard_text, cx);
3071 }
3072 }
3073 }
3074
3075 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
3076 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
3077 if let Some((selections, _)) = self.selection_history.get(&tx_id).cloned() {
3078 self.set_selections(selections, None, cx);
3079 }
3080 self.request_autoscroll(Autoscroll::Fit, cx);
3081 }
3082 }
3083
3084 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
3085 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
3086 if let Some((_, Some(selections))) = self.selection_history.get(&tx_id).cloned() {
3087 self.set_selections(selections, None, cx);
3088 }
3089 self.request_autoscroll(Autoscroll::Fit, cx);
3090 }
3091 }
3092
3093 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
3094 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3095 let mut selections = self.local_selections::<Point>(cx);
3096 for selection in &mut selections {
3097 let start = selection.start.to_display_point(&display_map);
3098 let end = selection.end.to_display_point(&display_map);
3099
3100 if start != end {
3101 selection.end = selection.start.clone();
3102 } else {
3103 let cursor = movement::left(&display_map, start)
3104 .unwrap()
3105 .to_point(&display_map);
3106 selection.start = cursor.clone();
3107 selection.end = cursor;
3108 }
3109 selection.reversed = false;
3110 selection.goal = SelectionGoal::None;
3111 }
3112 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3113 }
3114
3115 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
3116 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3117 let mut selections = self.local_selections::<Point>(cx);
3118 for selection in &mut selections {
3119 let head = selection.head().to_display_point(&display_map);
3120 let cursor = movement::left(&display_map, head)
3121 .unwrap()
3122 .to_point(&display_map);
3123 selection.set_head(cursor);
3124 selection.goal = SelectionGoal::None;
3125 }
3126 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3127 }
3128
3129 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
3130 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3131 let mut selections = self.local_selections::<Point>(cx);
3132 for selection in &mut selections {
3133 let start = selection.start.to_display_point(&display_map);
3134 let end = selection.end.to_display_point(&display_map);
3135
3136 if start != end {
3137 selection.start = selection.end.clone();
3138 } else {
3139 let cursor = movement::right(&display_map, end)
3140 .unwrap()
3141 .to_point(&display_map);
3142 selection.start = cursor;
3143 selection.end = cursor;
3144 }
3145 selection.reversed = false;
3146 selection.goal = SelectionGoal::None;
3147 }
3148 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3149 }
3150
3151 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
3152 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3153 let mut selections = self.local_selections::<Point>(cx);
3154 for selection in &mut selections {
3155 let head = selection.head().to_display_point(&display_map);
3156 let cursor = movement::right(&display_map, head)
3157 .unwrap()
3158 .to_point(&display_map);
3159 selection.set_head(cursor);
3160 selection.goal = SelectionGoal::None;
3161 }
3162 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3163 }
3164
3165 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
3166 if let Some((range, column, _, _)) = self.take_rename(cx) {
3167 let snapshot = self.buffer.read(cx).snapshot(cx);
3168 let position = snapshot.clip_point(
3169 range.start.to_point(&snapshot) + Point::new(0, column),
3170 Bias::Left,
3171 );
3172 self.update_selections(
3173 vec![Selection {
3174 id: self.newest_anchor_selection().id,
3175 start: position,
3176 end: position,
3177 reversed: false,
3178 goal: SelectionGoal::None,
3179 }],
3180 None,
3181 cx,
3182 );
3183 return;
3184 }
3185
3186 if let Some(context_menu) = self.context_menu.as_mut() {
3187 if context_menu.select_prev(cx) {
3188 return;
3189 }
3190 }
3191
3192 if matches!(self.mode, EditorMode::SingleLine) {
3193 cx.propagate_action();
3194 return;
3195 }
3196
3197 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3198 let mut selections = self.local_selections::<Point>(cx);
3199 for selection in &mut selections {
3200 let start = selection.start.to_display_point(&display_map);
3201 let end = selection.end.to_display_point(&display_map);
3202 if start != end {
3203 selection.goal = SelectionGoal::None;
3204 }
3205
3206 let (start, goal) = movement::up(&display_map, start, selection.goal).unwrap();
3207 let cursor = start.to_point(&display_map);
3208 selection.start = cursor;
3209 selection.end = cursor;
3210 selection.goal = goal;
3211 selection.reversed = false;
3212 }
3213 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3214 }
3215
3216 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
3217 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3218 let mut selections = self.local_selections::<Point>(cx);
3219 for selection in &mut selections {
3220 let head = selection.head().to_display_point(&display_map);
3221 let (head, goal) = movement::up(&display_map, head, selection.goal).unwrap();
3222 let cursor = head.to_point(&display_map);
3223 selection.set_head(cursor);
3224 selection.goal = goal;
3225 }
3226 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3227 }
3228
3229 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
3230 if let Some(context_menu) = self.context_menu.as_mut() {
3231 if context_menu.select_next(cx) {
3232 return;
3233 }
3234 }
3235
3236 if matches!(self.mode, EditorMode::SingleLine) {
3237 cx.propagate_action();
3238 return;
3239 }
3240
3241 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3242 let mut selections = self.local_selections::<Point>(cx);
3243 for selection in &mut selections {
3244 let start = selection.start.to_display_point(&display_map);
3245 let end = selection.end.to_display_point(&display_map);
3246 if start != end {
3247 selection.goal = SelectionGoal::None;
3248 }
3249
3250 let (start, goal) = movement::down(&display_map, end, selection.goal).unwrap();
3251 let cursor = start.to_point(&display_map);
3252 selection.start = cursor;
3253 selection.end = cursor;
3254 selection.goal = goal;
3255 selection.reversed = false;
3256 }
3257 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3258 }
3259
3260 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
3261 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3262 let mut selections = self.local_selections::<Point>(cx);
3263 for selection in &mut selections {
3264 let head = selection.head().to_display_point(&display_map);
3265 let (head, goal) = movement::down(&display_map, head, selection.goal).unwrap();
3266 let cursor = head.to_point(&display_map);
3267 selection.set_head(cursor);
3268 selection.goal = goal;
3269 }
3270 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3271 }
3272
3273 pub fn move_to_previous_word_boundary(
3274 &mut self,
3275 _: &MoveToPreviousWordBoundary,
3276 cx: &mut ViewContext<Self>,
3277 ) {
3278 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3279 let mut selections = self.local_selections::<Point>(cx);
3280 for selection in &mut selections {
3281 let head = selection.head().to_display_point(&display_map);
3282 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3283 selection.start = cursor.clone();
3284 selection.end = cursor;
3285 selection.reversed = false;
3286 selection.goal = SelectionGoal::None;
3287 }
3288 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3289 }
3290
3291 pub fn select_to_previous_word_boundary(
3292 &mut self,
3293 _: &SelectToPreviousWordBoundary,
3294 cx: &mut ViewContext<Self>,
3295 ) {
3296 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3297 let mut selections = self.local_selections::<Point>(cx);
3298 for selection in &mut selections {
3299 let head = selection.head().to_display_point(&display_map);
3300 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3301 selection.set_head(cursor);
3302 selection.goal = SelectionGoal::None;
3303 }
3304 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3305 }
3306
3307 pub fn delete_to_previous_word_boundary(
3308 &mut self,
3309 _: &DeleteToPreviousWordBoundary,
3310 cx: &mut ViewContext<Self>,
3311 ) {
3312 self.start_transaction(cx);
3313 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3314 let mut selections = self.local_selections::<Point>(cx);
3315 for selection in &mut selections {
3316 if selection.is_empty() {
3317 let head = selection.head().to_display_point(&display_map);
3318 let cursor =
3319 movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3320 selection.set_head(cursor);
3321 selection.goal = SelectionGoal::None;
3322 }
3323 }
3324 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3325 self.insert("", cx);
3326 self.end_transaction(cx);
3327 }
3328
3329 pub fn move_to_next_word_boundary(
3330 &mut self,
3331 _: &MoveToNextWordBoundary,
3332 cx: &mut ViewContext<Self>,
3333 ) {
3334 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3335 let mut selections = self.local_selections::<Point>(cx);
3336 for selection in &mut selections {
3337 let head = selection.head().to_display_point(&display_map);
3338 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
3339 selection.start = cursor;
3340 selection.end = cursor;
3341 selection.reversed = false;
3342 selection.goal = SelectionGoal::None;
3343 }
3344 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3345 }
3346
3347 pub fn select_to_next_word_boundary(
3348 &mut self,
3349 _: &SelectToNextWordBoundary,
3350 cx: &mut ViewContext<Self>,
3351 ) {
3352 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3353 let mut selections = self.local_selections::<Point>(cx);
3354 for selection in &mut selections {
3355 let head = selection.head().to_display_point(&display_map);
3356 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
3357 selection.set_head(cursor);
3358 selection.goal = SelectionGoal::None;
3359 }
3360 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3361 }
3362
3363 pub fn delete_to_next_word_boundary(
3364 &mut self,
3365 _: &DeleteToNextWordBoundary,
3366 cx: &mut ViewContext<Self>,
3367 ) {
3368 self.start_transaction(cx);
3369 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3370 let mut selections = self.local_selections::<Point>(cx);
3371 for selection in &mut selections {
3372 if selection.is_empty() {
3373 let head = selection.head().to_display_point(&display_map);
3374 let cursor =
3375 movement::next_word_boundary(&display_map, head).to_point(&display_map);
3376 selection.set_head(cursor);
3377 selection.goal = SelectionGoal::None;
3378 }
3379 }
3380 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3381 self.insert("", cx);
3382 self.end_transaction(cx);
3383 }
3384
3385 pub fn move_to_beginning_of_line(
3386 &mut self,
3387 _: &MoveToBeginningOfLine,
3388 cx: &mut ViewContext<Self>,
3389 ) {
3390 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3391 let mut selections = self.local_selections::<Point>(cx);
3392 for selection in &mut selections {
3393 let head = selection.head().to_display_point(&display_map);
3394 let new_head = movement::line_beginning(&display_map, head, true);
3395 let cursor = new_head.to_point(&display_map);
3396 selection.start = cursor;
3397 selection.end = cursor;
3398 selection.reversed = false;
3399 selection.goal = SelectionGoal::None;
3400 }
3401 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3402 }
3403
3404 pub fn select_to_beginning_of_line(
3405 &mut self,
3406 SelectToBeginningOfLine(stop_at_soft_boundaries): &SelectToBeginningOfLine,
3407 cx: &mut ViewContext<Self>,
3408 ) {
3409 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3410 let mut selections = self.local_selections::<Point>(cx);
3411 for selection in &mut selections {
3412 let head = selection.head().to_display_point(&display_map);
3413 let new_head = movement::line_beginning(&display_map, head, *stop_at_soft_boundaries);
3414 selection.set_head(new_head.to_point(&display_map));
3415 selection.goal = SelectionGoal::None;
3416 }
3417 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3418 }
3419
3420 pub fn delete_to_beginning_of_line(
3421 &mut self,
3422 _: &DeleteToBeginningOfLine,
3423 cx: &mut ViewContext<Self>,
3424 ) {
3425 self.start_transaction(cx);
3426 self.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
3427 self.backspace(&Backspace, cx);
3428 self.end_transaction(cx);
3429 }
3430
3431 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
3432 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3433 let mut selections = self.local_selections::<Point>(cx);
3434 {
3435 for selection in &mut selections {
3436 let head = selection.head().to_display_point(&display_map);
3437 let new_head = movement::line_end(&display_map, head, true);
3438 let anchor = new_head.to_point(&display_map);
3439 selection.start = anchor.clone();
3440 selection.end = anchor;
3441 selection.reversed = false;
3442 selection.goal = SelectionGoal::None;
3443 }
3444 }
3445 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3446 }
3447
3448 pub fn select_to_end_of_line(
3449 &mut self,
3450 SelectToEndOfLine(stop_at_soft_boundaries): &SelectToEndOfLine,
3451 cx: &mut ViewContext<Self>,
3452 ) {
3453 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3454 let mut selections = self.local_selections::<Point>(cx);
3455 for selection in &mut selections {
3456 let head = selection.head().to_display_point(&display_map);
3457 let new_head = movement::line_end(&display_map, head, *stop_at_soft_boundaries);
3458 selection.set_head(new_head.to_point(&display_map));
3459 selection.goal = SelectionGoal::None;
3460 }
3461 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3462 }
3463
3464 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
3465 self.start_transaction(cx);
3466 self.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3467 self.delete(&Delete, cx);
3468 self.end_transaction(cx);
3469 }
3470
3471 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
3472 self.start_transaction(cx);
3473 self.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3474 self.cut(&Cut, cx);
3475 self.end_transaction(cx);
3476 }
3477
3478 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
3479 if matches!(self.mode, EditorMode::SingleLine) {
3480 cx.propagate_action();
3481 return;
3482 }
3483
3484 let selection = Selection {
3485 id: post_inc(&mut self.next_selection_id),
3486 start: 0,
3487 end: 0,
3488 reversed: false,
3489 goal: SelectionGoal::None,
3490 };
3491 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3492 }
3493
3494 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
3495 let mut selection = self.local_selections::<Point>(cx).last().unwrap().clone();
3496 selection.set_head(Point::zero());
3497 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3498 }
3499
3500 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
3501 if matches!(self.mode, EditorMode::SingleLine) {
3502 cx.propagate_action();
3503 return;
3504 }
3505
3506 let cursor = self.buffer.read(cx).read(cx).len();
3507 let selection = Selection {
3508 id: post_inc(&mut self.next_selection_id),
3509 start: cursor,
3510 end: cursor,
3511 reversed: false,
3512 goal: SelectionGoal::None,
3513 };
3514 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3515 }
3516
3517 pub fn set_nav_history(&mut self, nav_history: Option<ItemNavHistory>) {
3518 self.nav_history = nav_history;
3519 }
3520
3521 pub fn nav_history(&self) -> Option<&ItemNavHistory> {
3522 self.nav_history.as_ref()
3523 }
3524
3525 fn push_to_nav_history(
3526 &self,
3527 position: Anchor,
3528 new_position: Option<Point>,
3529 cx: &mut ViewContext<Self>,
3530 ) {
3531 if let Some(nav_history) = &self.nav_history {
3532 let buffer = self.buffer.read(cx).read(cx);
3533 let offset = position.to_offset(&buffer);
3534 let point = position.to_point(&buffer);
3535 drop(buffer);
3536
3537 if let Some(new_position) = new_position {
3538 let row_delta = (new_position.row as i64 - point.row as i64).abs();
3539 if row_delta < MIN_NAVIGATION_HISTORY_ROW_DELTA {
3540 return;
3541 }
3542 }
3543
3544 nav_history.push(Some(NavigationData {
3545 anchor: position,
3546 offset,
3547 }));
3548 }
3549 }
3550
3551 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
3552 let mut selection = self.local_selections::<usize>(cx).first().unwrap().clone();
3553 selection.set_head(self.buffer.read(cx).read(cx).len());
3554 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3555 }
3556
3557 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
3558 let selection = Selection {
3559 id: post_inc(&mut self.next_selection_id),
3560 start: 0,
3561 end: self.buffer.read(cx).read(cx).len(),
3562 reversed: false,
3563 goal: SelectionGoal::None,
3564 };
3565 self.update_selections(vec![selection], None, cx);
3566 }
3567
3568 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
3569 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3570 let mut selections = self.local_selections::<Point>(cx);
3571 let max_point = display_map.buffer_snapshot.max_point();
3572 for selection in &mut selections {
3573 let rows = selection.spanned_rows(true, &display_map);
3574 selection.start = Point::new(rows.start, 0);
3575 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
3576 selection.reversed = false;
3577 }
3578 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3579 }
3580
3581 pub fn split_selection_into_lines(
3582 &mut self,
3583 _: &SplitSelectionIntoLines,
3584 cx: &mut ViewContext<Self>,
3585 ) {
3586 let mut to_unfold = Vec::new();
3587 let mut new_selections = Vec::new();
3588 {
3589 let selections = self.local_selections::<Point>(cx);
3590 let buffer = self.buffer.read(cx).read(cx);
3591 for selection in selections {
3592 for row in selection.start.row..selection.end.row {
3593 let cursor = Point::new(row, buffer.line_len(row));
3594 new_selections.push(Selection {
3595 id: post_inc(&mut self.next_selection_id),
3596 start: cursor,
3597 end: cursor,
3598 reversed: false,
3599 goal: SelectionGoal::None,
3600 });
3601 }
3602 new_selections.push(Selection {
3603 id: selection.id,
3604 start: selection.end,
3605 end: selection.end,
3606 reversed: false,
3607 goal: SelectionGoal::None,
3608 });
3609 to_unfold.push(selection.start..selection.end);
3610 }
3611 }
3612 self.unfold_ranges(to_unfold, cx);
3613 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3614 }
3615
3616 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
3617 self.add_selection(true, cx);
3618 }
3619
3620 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
3621 self.add_selection(false, cx);
3622 }
3623
3624 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
3625 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3626 let mut selections = self.local_selections::<Point>(cx);
3627 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
3628 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
3629 let range = oldest_selection.display_range(&display_map).sorted();
3630 let columns = cmp::min(range.start.column(), range.end.column())
3631 ..cmp::max(range.start.column(), range.end.column());
3632
3633 selections.clear();
3634 let mut stack = Vec::new();
3635 for row in range.start.row()..=range.end.row() {
3636 if let Some(selection) = self.build_columnar_selection(
3637 &display_map,
3638 row,
3639 &columns,
3640 oldest_selection.reversed,
3641 ) {
3642 stack.push(selection.id);
3643 selections.push(selection);
3644 }
3645 }
3646
3647 if above {
3648 stack.reverse();
3649 }
3650
3651 AddSelectionsState { above, stack }
3652 });
3653
3654 let last_added_selection = *state.stack.last().unwrap();
3655 let mut new_selections = Vec::new();
3656 if above == state.above {
3657 let end_row = if above {
3658 0
3659 } else {
3660 display_map.max_point().row()
3661 };
3662
3663 'outer: for selection in selections {
3664 if selection.id == last_added_selection {
3665 let range = selection.display_range(&display_map).sorted();
3666 debug_assert_eq!(range.start.row(), range.end.row());
3667 let mut row = range.start.row();
3668 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
3669 {
3670 start..end
3671 } else {
3672 cmp::min(range.start.column(), range.end.column())
3673 ..cmp::max(range.start.column(), range.end.column())
3674 };
3675
3676 while row != end_row {
3677 if above {
3678 row -= 1;
3679 } else {
3680 row += 1;
3681 }
3682
3683 if let Some(new_selection) = self.build_columnar_selection(
3684 &display_map,
3685 row,
3686 &columns,
3687 selection.reversed,
3688 ) {
3689 state.stack.push(new_selection.id);
3690 if above {
3691 new_selections.push(new_selection);
3692 new_selections.push(selection);
3693 } else {
3694 new_selections.push(selection);
3695 new_selections.push(new_selection);
3696 }
3697
3698 continue 'outer;
3699 }
3700 }
3701 }
3702
3703 new_selections.push(selection);
3704 }
3705 } else {
3706 new_selections = selections;
3707 new_selections.retain(|s| s.id != last_added_selection);
3708 state.stack.pop();
3709 }
3710
3711 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3712 if state.stack.len() > 1 {
3713 self.add_selections_state = Some(state);
3714 }
3715 }
3716
3717 pub fn select_next(&mut self, action: &SelectNext, cx: &mut ViewContext<Self>) {
3718 let replace_newest = action.0;
3719 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3720 let buffer = &display_map.buffer_snapshot;
3721 let mut selections = self.local_selections::<usize>(cx);
3722 if let Some(mut select_next_state) = self.select_next_state.take() {
3723 let query = &select_next_state.query;
3724 if !select_next_state.done {
3725 let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
3726 let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
3727 let mut next_selected_range = None;
3728
3729 let bytes_after_last_selection =
3730 buffer.bytes_in_range(last_selection.end..buffer.len());
3731 let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
3732 let query_matches = query
3733 .stream_find_iter(bytes_after_last_selection)
3734 .map(|result| (last_selection.end, result))
3735 .chain(
3736 query
3737 .stream_find_iter(bytes_before_first_selection)
3738 .map(|result| (0, result)),
3739 );
3740 for (start_offset, query_match) in query_matches {
3741 let query_match = query_match.unwrap(); // can only fail due to I/O
3742 let offset_range =
3743 start_offset + query_match.start()..start_offset + query_match.end();
3744 let display_range = offset_range.start.to_display_point(&display_map)
3745 ..offset_range.end.to_display_point(&display_map);
3746
3747 if !select_next_state.wordwise
3748 || (!movement::is_inside_word(&display_map, display_range.start)
3749 && !movement::is_inside_word(&display_map, display_range.end))
3750 {
3751 next_selected_range = Some(offset_range);
3752 break;
3753 }
3754 }
3755
3756 if let Some(next_selected_range) = next_selected_range {
3757 if replace_newest {
3758 if let Some(newest_id) =
3759 selections.iter().max_by_key(|s| s.id).map(|s| s.id)
3760 {
3761 selections.retain(|s| s.id != newest_id);
3762 }
3763 }
3764 selections.push(Selection {
3765 id: post_inc(&mut self.next_selection_id),
3766 start: next_selected_range.start,
3767 end: next_selected_range.end,
3768 reversed: false,
3769 goal: SelectionGoal::None,
3770 });
3771 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3772 } else {
3773 select_next_state.done = true;
3774 }
3775 }
3776
3777 self.select_next_state = Some(select_next_state);
3778 } else if selections.len() == 1 {
3779 let selection = selections.last_mut().unwrap();
3780 if selection.start == selection.end {
3781 let word_range = movement::surrounding_word(
3782 &display_map,
3783 selection.start.to_display_point(&display_map),
3784 );
3785 selection.start = word_range.start.to_offset(&display_map, Bias::Left);
3786 selection.end = word_range.end.to_offset(&display_map, Bias::Left);
3787 selection.goal = SelectionGoal::None;
3788 selection.reversed = false;
3789
3790 let query = buffer
3791 .text_for_range(selection.start..selection.end)
3792 .collect::<String>();
3793 let select_state = SelectNextState {
3794 query: AhoCorasick::new_auto_configured(&[query]),
3795 wordwise: true,
3796 done: false,
3797 };
3798 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3799 self.select_next_state = Some(select_state);
3800 } else {
3801 let query = buffer
3802 .text_for_range(selection.start..selection.end)
3803 .collect::<String>();
3804 self.select_next_state = Some(SelectNextState {
3805 query: AhoCorasick::new_auto_configured(&[query]),
3806 wordwise: false,
3807 done: false,
3808 });
3809 self.select_next(action, cx);
3810 }
3811 }
3812 }
3813
3814 pub fn toggle_comments(&mut self, _: &ToggleComments, cx: &mut ViewContext<Self>) {
3815 // Get the line comment prefix. Split its trailing whitespace into a separate string,
3816 // as that portion won't be used for detecting if a line is a comment.
3817 let full_comment_prefix =
3818 if let Some(prefix) = self.language(cx).and_then(|l| l.line_comment_prefix()) {
3819 prefix.to_string()
3820 } else {
3821 return;
3822 };
3823 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
3824 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
3825
3826 self.start_transaction(cx);
3827 let mut selections = self.local_selections::<Point>(cx);
3828 let mut all_selection_lines_are_comments = true;
3829 let mut edit_ranges = Vec::new();
3830 let mut last_toggled_row = None;
3831 self.buffer.update(cx, |buffer, cx| {
3832 for selection in &mut selections {
3833 edit_ranges.clear();
3834 let snapshot = buffer.snapshot(cx);
3835
3836 let end_row =
3837 if selection.end.row > selection.start.row && selection.end.column == 0 {
3838 selection.end.row
3839 } else {
3840 selection.end.row + 1
3841 };
3842
3843 for row in selection.start.row..end_row {
3844 // If multiple selections contain a given row, avoid processing that
3845 // row more than once.
3846 if last_toggled_row == Some(row) {
3847 continue;
3848 } else {
3849 last_toggled_row = Some(row);
3850 }
3851
3852 if snapshot.is_line_blank(row) {
3853 continue;
3854 }
3855
3856 let start = Point::new(row, snapshot.indent_column_for_line(row));
3857 let mut line_bytes = snapshot
3858 .bytes_in_range(start..snapshot.max_point())
3859 .flatten()
3860 .copied();
3861
3862 // If this line currently begins with the line comment prefix, then record
3863 // the range containing the prefix.
3864 if all_selection_lines_are_comments
3865 && line_bytes
3866 .by_ref()
3867 .take(comment_prefix.len())
3868 .eq(comment_prefix.bytes())
3869 {
3870 // Include any whitespace that matches the comment prefix.
3871 let matching_whitespace_len = line_bytes
3872 .zip(comment_prefix_whitespace.bytes())
3873 .take_while(|(a, b)| a == b)
3874 .count() as u32;
3875 let end = Point::new(
3876 row,
3877 start.column + comment_prefix.len() as u32 + matching_whitespace_len,
3878 );
3879 edit_ranges.push(start..end);
3880 }
3881 // If this line does not begin with the line comment prefix, then record
3882 // the position where the prefix should be inserted.
3883 else {
3884 all_selection_lines_are_comments = false;
3885 edit_ranges.push(start..start);
3886 }
3887 }
3888
3889 if !edit_ranges.is_empty() {
3890 if all_selection_lines_are_comments {
3891 buffer.edit(edit_ranges.iter().cloned(), "", cx);
3892 } else {
3893 let min_column = edit_ranges.iter().map(|r| r.start.column).min().unwrap();
3894 let edit_ranges = edit_ranges.iter().map(|range| {
3895 let position = Point::new(range.start.row, min_column);
3896 position..position
3897 });
3898 buffer.edit(edit_ranges, &full_comment_prefix, cx);
3899 }
3900 }
3901 }
3902 });
3903
3904 self.update_selections(
3905 self.local_selections::<usize>(cx),
3906 Some(Autoscroll::Fit),
3907 cx,
3908 );
3909 self.end_transaction(cx);
3910 }
3911
3912 pub fn select_larger_syntax_node(
3913 &mut self,
3914 _: &SelectLargerSyntaxNode,
3915 cx: &mut ViewContext<Self>,
3916 ) {
3917 let old_selections = self.local_selections::<usize>(cx).into_boxed_slice();
3918 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3919 let buffer = self.buffer.read(cx).snapshot(cx);
3920
3921 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
3922 let mut selected_larger_node = false;
3923 let new_selections = old_selections
3924 .iter()
3925 .map(|selection| {
3926 let old_range = selection.start..selection.end;
3927 let mut new_range = old_range.clone();
3928 while let Some(containing_range) =
3929 buffer.range_for_syntax_ancestor(new_range.clone())
3930 {
3931 new_range = containing_range;
3932 if !display_map.intersects_fold(new_range.start)
3933 && !display_map.intersects_fold(new_range.end)
3934 {
3935 break;
3936 }
3937 }
3938
3939 selected_larger_node |= new_range != old_range;
3940 Selection {
3941 id: selection.id,
3942 start: new_range.start,
3943 end: new_range.end,
3944 goal: SelectionGoal::None,
3945 reversed: selection.reversed,
3946 }
3947 })
3948 .collect::<Vec<_>>();
3949
3950 if selected_larger_node {
3951 stack.push(old_selections);
3952 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3953 }
3954 self.select_larger_syntax_node_stack = stack;
3955 }
3956
3957 pub fn select_smaller_syntax_node(
3958 &mut self,
3959 _: &SelectSmallerSyntaxNode,
3960 cx: &mut ViewContext<Self>,
3961 ) {
3962 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
3963 if let Some(selections) = stack.pop() {
3964 self.update_selections(selections.to_vec(), Some(Autoscroll::Fit), cx);
3965 }
3966 self.select_larger_syntax_node_stack = stack;
3967 }
3968
3969 pub fn move_to_enclosing_bracket(
3970 &mut self,
3971 _: &MoveToEnclosingBracket,
3972 cx: &mut ViewContext<Self>,
3973 ) {
3974 let mut selections = self.local_selections::<usize>(cx);
3975 let buffer = self.buffer.read(cx).snapshot(cx);
3976 for selection in &mut selections {
3977 if let Some((open_range, close_range)) =
3978 buffer.enclosing_bracket_ranges(selection.start..selection.end)
3979 {
3980 let close_range = close_range.to_inclusive();
3981 let destination = if close_range.contains(&selection.start)
3982 && close_range.contains(&selection.end)
3983 {
3984 open_range.end
3985 } else {
3986 *close_range.start()
3987 };
3988 selection.start = destination;
3989 selection.end = destination;
3990 }
3991 }
3992
3993 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3994 }
3995
3996 pub fn show_next_diagnostic(&mut self, _: &ShowNextDiagnostic, cx: &mut ViewContext<Self>) {
3997 let buffer = self.buffer.read(cx).snapshot(cx);
3998 let selection = self.newest_selection::<usize>(&buffer);
3999 let mut active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
4000 active_diagnostics
4001 .primary_range
4002 .to_offset(&buffer)
4003 .to_inclusive()
4004 });
4005 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
4006 if active_primary_range.contains(&selection.head()) {
4007 *active_primary_range.end()
4008 } else {
4009 selection.head()
4010 }
4011 } else {
4012 selection.head()
4013 };
4014
4015 loop {
4016 let next_group = buffer
4017 .diagnostics_in_range::<_, usize>(search_start..buffer.len())
4018 .find_map(|entry| {
4019 if entry.diagnostic.is_primary
4020 && !entry.range.is_empty()
4021 && Some(entry.range.end) != active_primary_range.as_ref().map(|r| *r.end())
4022 {
4023 Some((entry.range, entry.diagnostic.group_id))
4024 } else {
4025 None
4026 }
4027 });
4028
4029 if let Some((primary_range, group_id)) = next_group {
4030 self.activate_diagnostics(group_id, cx);
4031 self.update_selections(
4032 vec![Selection {
4033 id: selection.id,
4034 start: primary_range.start,
4035 end: primary_range.start,
4036 reversed: false,
4037 goal: SelectionGoal::None,
4038 }],
4039 Some(Autoscroll::Center),
4040 cx,
4041 );
4042 break;
4043 } else if search_start == 0 {
4044 break;
4045 } else {
4046 // Cycle around to the start of the buffer, potentially moving back to the start of
4047 // the currently active diagnostic.
4048 search_start = 0;
4049 active_primary_range.take();
4050 }
4051 }
4052 }
4053
4054 pub fn go_to_definition(
4055 workspace: &mut Workspace,
4056 _: &GoToDefinition,
4057 cx: &mut ViewContext<Workspace>,
4058 ) {
4059 let active_item = workspace.active_item(cx);
4060 let editor_handle = if let Some(editor) = active_item
4061 .as_ref()
4062 .and_then(|item| item.act_as::<Self>(cx))
4063 {
4064 editor
4065 } else {
4066 return;
4067 };
4068
4069 let editor = editor_handle.read(cx);
4070 let buffer = editor.buffer.read(cx);
4071 let head = editor.newest_selection::<usize>(&buffer.read(cx)).head();
4072 let (buffer, head) =
4073 if let Some(text_anchor) = editor.buffer.read(cx).text_anchor_for_position(head, cx) {
4074 text_anchor
4075 } else {
4076 return;
4077 };
4078
4079 let definitions = workspace
4080 .project()
4081 .update(cx, |project, cx| project.definition(&buffer, head, cx));
4082 cx.spawn(|workspace, mut cx| async move {
4083 let definitions = definitions.await?;
4084 workspace.update(&mut cx, |workspace, cx| {
4085 for definition in definitions {
4086 let range = definition
4087 .target_range
4088 .to_offset(definition.target_buffer.read(cx));
4089 let target_editor_handle = workspace
4090 .open_item(BufferItemHandle(definition.target_buffer), cx)
4091 .downcast::<Self>()
4092 .unwrap();
4093
4094 target_editor_handle.update(cx, |target_editor, cx| {
4095 // When selecting a definition in a different buffer, disable the nav history
4096 // to avoid creating a history entry at the previous cursor location.
4097 let disabled_history = if editor_handle == target_editor_handle {
4098 None
4099 } else {
4100 target_editor.nav_history.take()
4101 };
4102 target_editor.select_ranges([range], Some(Autoscroll::Center), cx);
4103 if disabled_history.is_some() {
4104 target_editor.nav_history = disabled_history;
4105 }
4106 });
4107 }
4108 });
4109
4110 Ok::<(), anyhow::Error>(())
4111 })
4112 .detach_and_log_err(cx);
4113 }
4114
4115 pub fn rename(&mut self, _: &Rename, cx: &mut ViewContext<Self>) -> Option<Task<Result<()>>> {
4116 use language::ToOffset as _;
4117
4118 let project = self.project.clone()?;
4119 let position = self.newest_anchor_selection().head();
4120 let (buffer, buffer_position) = self
4121 .buffer
4122 .read(cx)
4123 .text_anchor_for_position(position.clone(), cx)?;
4124 let snapshot = buffer.read(cx).snapshot();
4125 let prepare_rename = project.update(cx, |project, cx| {
4126 project.prepare_rename(buffer.clone(), buffer_position.to_offset(&snapshot), cx)
4127 });
4128
4129 Some(cx.spawn(|this, mut cx| async move {
4130 if let Some(range) = prepare_rename.await? {
4131 let buffer_offset_range = range.to_offset(&snapshot);
4132 let buffer_offset = buffer_position.to_offset(&snapshot);
4133 let lookbehind = buffer_offset.saturating_sub(buffer_offset_range.start);
4134 let lookahead = buffer_offset_range.end.saturating_sub(buffer_offset);
4135
4136 this.update(&mut cx, |this, cx| {
4137 let settings = (this.build_settings)(cx);
4138 let buffer = this.buffer.read(cx).read(cx);
4139 let offset = position.to_offset(&buffer);
4140 let start = offset - lookbehind;
4141 let end = offset + lookahead;
4142 let rename_range = buffer.anchor_before(start)..buffer.anchor_after(end);
4143 let old_name = buffer.text_for_range(start..end).collect::<String>();
4144 drop(buffer);
4145
4146 let editor = cx.add_view(|cx| {
4147 let mut editor = Editor::single_line(this.build_settings.clone(), cx);
4148 editor
4149 .buffer
4150 .update(cx, |buffer, cx| buffer.edit([0..0], &old_name, cx));
4151 editor.select_ranges([0..old_name.len()], None, cx);
4152 editor.highlight_ranges::<Rename>(
4153 vec![Anchor::min()..Anchor::max()],
4154 settings.style.diff_background_inserted,
4155 cx,
4156 );
4157 editor
4158 });
4159 this.highlight_ranges::<Rename>(
4160 vec![rename_range.clone()],
4161 settings.style.diff_background_deleted,
4162 cx,
4163 );
4164 cx.focus(&editor);
4165 let block_id = this.insert_blocks(
4166 [BlockProperties {
4167 position: rename_range.start.clone(),
4168 height: 1,
4169 render: Arc::new({
4170 let editor = editor.clone();
4171 move |cx: &BlockContext| {
4172 ChildView::new(editor.clone())
4173 .contained()
4174 .with_padding_left(cx.anchor_x)
4175 .boxed()
4176 }
4177 }),
4178 disposition: BlockDisposition::Below,
4179 }],
4180 cx,
4181 )[0];
4182 this.pending_rename = Some(RenameState {
4183 range: rename_range,
4184 old_name,
4185 editor,
4186 block_id,
4187 });
4188 });
4189 }
4190
4191 Ok(())
4192 }))
4193 }
4194
4195 pub fn confirm_rename(
4196 workspace: &mut Workspace,
4197 _: &ConfirmRename,
4198 cx: &mut ViewContext<Workspace>,
4199 ) -> Option<Task<Result<()>>> {
4200 let editor = workspace.active_item(cx)?.act_as::<Editor>(cx)?;
4201
4202 let (buffer, range, old_name, new_name) = editor.update(cx, |editor, cx| {
4203 let (range, _, old_name, new_name) = editor.take_rename(cx)?;
4204 let buffer = editor.buffer.read(cx);
4205 let (start_buffer, start) = buffer.text_anchor_for_position(range.start.clone(), cx)?;
4206 let (end_buffer, end) = buffer.text_anchor_for_position(range.end.clone(), cx)?;
4207 if start_buffer == end_buffer {
4208 Some((start_buffer, start..end, old_name, new_name))
4209 } else {
4210 None
4211 }
4212 })?;
4213
4214 let rename = workspace.project().clone().update(cx, |project, cx| {
4215 project.perform_rename(
4216 buffer.clone(),
4217 range.start.clone(),
4218 new_name.clone(),
4219 true,
4220 cx,
4221 )
4222 });
4223
4224 Some(cx.spawn(|workspace, cx| async move {
4225 let project_transaction = rename.await?;
4226 Self::open_project_transaction(
4227 editor,
4228 workspace,
4229 project_transaction,
4230 format!("Rename: {} → {}", old_name, new_name),
4231 cx,
4232 )
4233 .await
4234 }))
4235 }
4236
4237 fn take_rename(
4238 &mut self,
4239 cx: &mut ViewContext<Self>,
4240 ) -> Option<(Range<Anchor>, u32, String, String)> {
4241 let rename = self.pending_rename.take()?;
4242 let editor = rename.editor.read(cx);
4243 let new_name = editor.text(cx);
4244 let buffer = editor.buffer.read(cx).snapshot(cx);
4245 let rename_position = editor.newest_selection::<Point>(&buffer);
4246 self.remove_blocks([rename.block_id].into_iter().collect(), cx);
4247 self.clear_highlighted_ranges::<Rename>(cx);
4248 Some((
4249 rename.range,
4250 rename_position.head().column,
4251 rename.old_name,
4252 new_name,
4253 ))
4254 }
4255
4256 fn invalidate_rename_range(
4257 &mut self,
4258 buffer: &MultiBufferSnapshot,
4259 cx: &mut ViewContext<Self>,
4260 ) {
4261 if let Some(rename) = self.pending_rename.as_ref() {
4262 if self.selections.len() == 1 {
4263 let head = self.selections[0].head().to_offset(buffer);
4264 let range = rename.range.to_offset(buffer).to_inclusive();
4265 if range.contains(&head) {
4266 return;
4267 }
4268 }
4269
4270 self.take_rename(cx);
4271 }
4272 }
4273
4274 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
4275 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
4276 let buffer = self.buffer.read(cx).snapshot(cx);
4277 let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
4278 let is_valid = buffer
4279 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone())
4280 .any(|entry| {
4281 entry.diagnostic.is_primary
4282 && !entry.range.is_empty()
4283 && entry.range.start == primary_range_start
4284 && entry.diagnostic.message == active_diagnostics.primary_message
4285 });
4286
4287 if is_valid != active_diagnostics.is_valid {
4288 active_diagnostics.is_valid = is_valid;
4289 let mut new_styles = HashMap::default();
4290 for (block_id, diagnostic) in &active_diagnostics.blocks {
4291 new_styles.insert(
4292 *block_id,
4293 diagnostic_block_renderer(
4294 diagnostic.clone(),
4295 is_valid,
4296 self.build_settings.clone(),
4297 ),
4298 );
4299 }
4300 self.display_map
4301 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
4302 }
4303 }
4304 }
4305
4306 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) {
4307 self.dismiss_diagnostics(cx);
4308 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
4309 let buffer = self.buffer.read(cx).snapshot(cx);
4310
4311 let mut primary_range = None;
4312 let mut primary_message = None;
4313 let mut group_end = Point::zero();
4314 let diagnostic_group = buffer
4315 .diagnostic_group::<Point>(group_id)
4316 .map(|entry| {
4317 if entry.range.end > group_end {
4318 group_end = entry.range.end;
4319 }
4320 if entry.diagnostic.is_primary {
4321 primary_range = Some(entry.range.clone());
4322 primary_message = Some(entry.diagnostic.message.clone());
4323 }
4324 entry
4325 })
4326 .collect::<Vec<_>>();
4327 let primary_range = primary_range.unwrap();
4328 let primary_message = primary_message.unwrap();
4329 let primary_range =
4330 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
4331
4332 let blocks = display_map
4333 .insert_blocks(
4334 diagnostic_group.iter().map(|entry| {
4335 let build_settings = self.build_settings.clone();
4336 let diagnostic = entry.diagnostic.clone();
4337 let message_height = diagnostic.message.lines().count() as u8;
4338
4339 BlockProperties {
4340 position: buffer.anchor_after(entry.range.start),
4341 height: message_height,
4342 render: diagnostic_block_renderer(diagnostic, true, build_settings),
4343 disposition: BlockDisposition::Below,
4344 }
4345 }),
4346 cx,
4347 )
4348 .into_iter()
4349 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
4350 .collect();
4351
4352 Some(ActiveDiagnosticGroup {
4353 primary_range,
4354 primary_message,
4355 blocks,
4356 is_valid: true,
4357 })
4358 });
4359 }
4360
4361 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
4362 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
4363 self.display_map.update(cx, |display_map, cx| {
4364 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
4365 });
4366 cx.notify();
4367 }
4368 }
4369
4370 fn build_columnar_selection(
4371 &mut self,
4372 display_map: &DisplaySnapshot,
4373 row: u32,
4374 columns: &Range<u32>,
4375 reversed: bool,
4376 ) -> Option<Selection<Point>> {
4377 let is_empty = columns.start == columns.end;
4378 let line_len = display_map.line_len(row);
4379 if columns.start < line_len || (is_empty && columns.start == line_len) {
4380 let start = DisplayPoint::new(row, columns.start);
4381 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
4382 Some(Selection {
4383 id: post_inc(&mut self.next_selection_id),
4384 start: start.to_point(display_map),
4385 end: end.to_point(display_map),
4386 reversed,
4387 goal: SelectionGoal::ColumnRange {
4388 start: columns.start,
4389 end: columns.end,
4390 },
4391 })
4392 } else {
4393 None
4394 }
4395 }
4396
4397 pub fn local_selections_in_range(
4398 &self,
4399 range: Range<Anchor>,
4400 display_map: &DisplaySnapshot,
4401 ) -> Vec<Selection<Point>> {
4402 let buffer = &display_map.buffer_snapshot;
4403
4404 let start_ix = match self
4405 .selections
4406 .binary_search_by(|probe| probe.end.cmp(&range.start, &buffer).unwrap())
4407 {
4408 Ok(ix) | Err(ix) => ix,
4409 };
4410 let end_ix = match self
4411 .selections
4412 .binary_search_by(|probe| probe.start.cmp(&range.end, &buffer).unwrap())
4413 {
4414 Ok(ix) => ix + 1,
4415 Err(ix) => ix,
4416 };
4417
4418 fn point_selection(
4419 selection: &Selection<Anchor>,
4420 buffer: &MultiBufferSnapshot,
4421 ) -> Selection<Point> {
4422 let start = selection.start.to_point(&buffer);
4423 let end = selection.end.to_point(&buffer);
4424 Selection {
4425 id: selection.id,
4426 start,
4427 end,
4428 reversed: selection.reversed,
4429 goal: selection.goal,
4430 }
4431 }
4432
4433 self.selections[start_ix..end_ix]
4434 .iter()
4435 .chain(
4436 self.pending_selection
4437 .as_ref()
4438 .map(|pending| &pending.selection),
4439 )
4440 .map(|s| point_selection(s, &buffer))
4441 .collect()
4442 }
4443
4444 pub fn local_selections<'a, D>(&self, cx: &'a AppContext) -> Vec<Selection<D>>
4445 where
4446 D: 'a + TextDimension + Ord + Sub<D, Output = D>,
4447 {
4448 let buffer = self.buffer.read(cx).snapshot(cx);
4449 let mut selections = self
4450 .resolve_selections::<D, _>(self.selections.iter(), &buffer)
4451 .peekable();
4452
4453 let mut pending_selection = self.pending_selection::<D>(&buffer);
4454
4455 iter::from_fn(move || {
4456 if let Some(pending) = pending_selection.as_mut() {
4457 while let Some(next_selection) = selections.peek() {
4458 if pending.start <= next_selection.end && pending.end >= next_selection.start {
4459 let next_selection = selections.next().unwrap();
4460 if next_selection.start < pending.start {
4461 pending.start = next_selection.start;
4462 }
4463 if next_selection.end > pending.end {
4464 pending.end = next_selection.end;
4465 }
4466 } else if next_selection.end < pending.start {
4467 return selections.next();
4468 } else {
4469 break;
4470 }
4471 }
4472
4473 pending_selection.take()
4474 } else {
4475 selections.next()
4476 }
4477 })
4478 .collect()
4479 }
4480
4481 fn resolve_selections<'a, D, I>(
4482 &self,
4483 selections: I,
4484 snapshot: &MultiBufferSnapshot,
4485 ) -> impl 'a + Iterator<Item = Selection<D>>
4486 where
4487 D: TextDimension + Ord + Sub<D, Output = D>,
4488 I: 'a + IntoIterator<Item = &'a Selection<Anchor>>,
4489 {
4490 let (to_summarize, selections) = selections.into_iter().tee();
4491 let mut summaries = snapshot
4492 .summaries_for_anchors::<D, _>(to_summarize.flat_map(|s| [&s.start, &s.end]))
4493 .into_iter();
4494 selections.map(move |s| Selection {
4495 id: s.id,
4496 start: summaries.next().unwrap(),
4497 end: summaries.next().unwrap(),
4498 reversed: s.reversed,
4499 goal: s.goal,
4500 })
4501 }
4502
4503 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4504 &self,
4505 snapshot: &MultiBufferSnapshot,
4506 ) -> Option<Selection<D>> {
4507 self.pending_selection
4508 .as_ref()
4509 .map(|pending| self.resolve_selection(&pending.selection, &snapshot))
4510 }
4511
4512 fn resolve_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4513 &self,
4514 selection: &Selection<Anchor>,
4515 buffer: &MultiBufferSnapshot,
4516 ) -> Selection<D> {
4517 Selection {
4518 id: selection.id,
4519 start: selection.start.summary::<D>(&buffer),
4520 end: selection.end.summary::<D>(&buffer),
4521 reversed: selection.reversed,
4522 goal: selection.goal,
4523 }
4524 }
4525
4526 fn selection_count<'a>(&self) -> usize {
4527 let mut count = self.selections.len();
4528 if self.pending_selection.is_some() {
4529 count += 1;
4530 }
4531 count
4532 }
4533
4534 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4535 &self,
4536 snapshot: &MultiBufferSnapshot,
4537 ) -> Selection<D> {
4538 self.selections
4539 .iter()
4540 .min_by_key(|s| s.id)
4541 .map(|selection| self.resolve_selection(selection, snapshot))
4542 .or_else(|| self.pending_selection(snapshot))
4543 .unwrap()
4544 }
4545
4546 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4547 &self,
4548 snapshot: &MultiBufferSnapshot,
4549 ) -> Selection<D> {
4550 self.resolve_selection(self.newest_anchor_selection(), snapshot)
4551 }
4552
4553 pub fn newest_anchor_selection(&self) -> &Selection<Anchor> {
4554 self.pending_selection
4555 .as_ref()
4556 .map(|s| &s.selection)
4557 .or_else(|| self.selections.iter().max_by_key(|s| s.id))
4558 .unwrap()
4559 }
4560
4561 pub fn update_selections<T>(
4562 &mut self,
4563 mut selections: Vec<Selection<T>>,
4564 autoscroll: Option<Autoscroll>,
4565 cx: &mut ViewContext<Self>,
4566 ) where
4567 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
4568 {
4569 let buffer = self.buffer.read(cx).snapshot(cx);
4570 selections.sort_unstable_by_key(|s| s.start);
4571
4572 // Merge overlapping selections.
4573 let mut i = 1;
4574 while i < selections.len() {
4575 if selections[i - 1].end >= selections[i].start {
4576 let removed = selections.remove(i);
4577 if removed.start < selections[i - 1].start {
4578 selections[i - 1].start = removed.start;
4579 }
4580 if removed.end > selections[i - 1].end {
4581 selections[i - 1].end = removed.end;
4582 }
4583 } else {
4584 i += 1;
4585 }
4586 }
4587
4588 if let Some(autoscroll) = autoscroll {
4589 self.request_autoscroll(autoscroll, cx);
4590 }
4591
4592 self.set_selections(
4593 Arc::from_iter(selections.into_iter().map(|selection| {
4594 let end_bias = if selection.end > selection.start {
4595 Bias::Left
4596 } else {
4597 Bias::Right
4598 };
4599 Selection {
4600 id: selection.id,
4601 start: buffer.anchor_after(selection.start),
4602 end: buffer.anchor_at(selection.end, end_bias),
4603 reversed: selection.reversed,
4604 goal: selection.goal,
4605 }
4606 })),
4607 None,
4608 cx,
4609 );
4610 }
4611
4612 /// Compute new ranges for any selections that were located in excerpts that have
4613 /// since been removed.
4614 ///
4615 /// Returns a `HashMap` indicating which selections whose former head position
4616 /// was no longer present. The keys of the map are selection ids. The values are
4617 /// the id of the new excerpt where the head of the selection has been moved.
4618 pub fn refresh_selections(&mut self, cx: &mut ViewContext<Self>) -> HashMap<usize, ExcerptId> {
4619 let snapshot = self.buffer.read(cx).read(cx);
4620 let anchors_with_status = snapshot.refresh_anchors(
4621 self.selections
4622 .iter()
4623 .flat_map(|selection| [&selection.start, &selection.end]),
4624 );
4625 let offsets =
4626 snapshot.summaries_for_anchors::<usize, _>(anchors_with_status.iter().map(|a| &a.1));
4627 let offsets = offsets.chunks(2);
4628 let statuses = anchors_with_status
4629 .chunks(2)
4630 .map(|a| (a[0].0 / 2, a[0].2, a[1].2));
4631
4632 let mut selections_with_lost_position = HashMap::default();
4633 let new_selections = offsets
4634 .zip(statuses)
4635 .map(|(offsets, (selection_ix, kept_start, kept_end))| {
4636 let selection = &self.selections[selection_ix];
4637 let kept_head = if selection.reversed {
4638 kept_start
4639 } else {
4640 kept_end
4641 };
4642 if !kept_head {
4643 selections_with_lost_position
4644 .insert(selection.id, selection.head().excerpt_id.clone());
4645 }
4646
4647 Selection {
4648 id: selection.id,
4649 start: offsets[0],
4650 end: offsets[1],
4651 reversed: selection.reversed,
4652 goal: selection.goal,
4653 }
4654 })
4655 .collect();
4656 drop(snapshot);
4657 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
4658 selections_with_lost_position
4659 }
4660
4661 fn set_selections(
4662 &mut self,
4663 selections: Arc<[Selection<Anchor>]>,
4664 pending_selection: Option<PendingSelection>,
4665 cx: &mut ViewContext<Self>,
4666 ) {
4667 let old_cursor_position = self.newest_anchor_selection().head();
4668
4669 self.selections = selections;
4670 self.pending_selection = pending_selection;
4671 if self.focused {
4672 self.buffer.update(cx, |buffer, cx| {
4673 buffer.set_active_selections(&self.selections, cx)
4674 });
4675 }
4676
4677 let display_map = self
4678 .display_map
4679 .update(cx, |display_map, cx| display_map.snapshot(cx));
4680 let buffer = &display_map.buffer_snapshot;
4681 self.add_selections_state = None;
4682 self.select_next_state = None;
4683 self.select_larger_syntax_node_stack.clear();
4684 self.autoclose_stack.invalidate(&self.selections, &buffer);
4685 self.snippet_stack.invalidate(&self.selections, &buffer);
4686 self.invalidate_rename_range(&buffer, cx);
4687
4688 let new_cursor_position = self.newest_anchor_selection().head();
4689
4690 self.push_to_nav_history(
4691 old_cursor_position.clone(),
4692 Some(new_cursor_position.to_point(&buffer)),
4693 cx,
4694 );
4695
4696 let completion_menu = match self.context_menu.as_mut() {
4697 Some(ContextMenu::Completions(menu)) => Some(menu),
4698 _ => {
4699 self.context_menu.take();
4700 None
4701 }
4702 };
4703
4704 if let Some(completion_menu) = completion_menu {
4705 let cursor_position = new_cursor_position.to_offset(&buffer);
4706 let (word_range, kind) =
4707 buffer.surrounding_word(completion_menu.initial_position.clone());
4708 if kind == Some(CharKind::Word) && word_range.to_inclusive().contains(&cursor_position)
4709 {
4710 let query = Self::completion_query(&buffer, cursor_position);
4711 cx.background()
4712 .block(completion_menu.filter(query.as_deref(), cx.background().clone()));
4713 self.show_completions(&ShowCompletions, cx);
4714 } else {
4715 self.hide_context_menu(cx);
4716 }
4717 }
4718
4719 if old_cursor_position.to_display_point(&display_map).row()
4720 != new_cursor_position.to_display_point(&display_map).row()
4721 {
4722 self.available_code_actions.take();
4723 }
4724 self.refresh_code_actions(cx);
4725
4726 self.pause_cursor_blinking(cx);
4727 cx.emit(Event::SelectionsChanged);
4728 }
4729
4730 pub fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
4731 self.autoscroll_request = Some(autoscroll);
4732 cx.notify();
4733 }
4734
4735 fn start_transaction(&mut self, cx: &mut ViewContext<Self>) {
4736 self.start_transaction_at(Instant::now(), cx);
4737 }
4738
4739 fn start_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
4740 self.end_selection(cx);
4741 if let Some(tx_id) = self
4742 .buffer
4743 .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
4744 {
4745 self.selection_history
4746 .insert(tx_id, (self.selections.clone(), None));
4747 }
4748 }
4749
4750 fn end_transaction(&mut self, cx: &mut ViewContext<Self>) {
4751 self.end_transaction_at(Instant::now(), cx);
4752 }
4753
4754 fn end_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
4755 if let Some(tx_id) = self
4756 .buffer
4757 .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
4758 {
4759 if let Some((_, end_selections)) = self.selection_history.get_mut(&tx_id) {
4760 *end_selections = Some(self.selections.clone());
4761 } else {
4762 log::error!("unexpectedly ended a transaction that wasn't started by this editor");
4763 }
4764 }
4765 }
4766
4767 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
4768 log::info!("Editor::page_up");
4769 }
4770
4771 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
4772 log::info!("Editor::page_down");
4773 }
4774
4775 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
4776 let mut fold_ranges = Vec::new();
4777
4778 let selections = self.local_selections::<Point>(cx);
4779 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4780 for selection in selections {
4781 let range = selection.display_range(&display_map).sorted();
4782 let buffer_start_row = range.start.to_point(&display_map).row;
4783
4784 for row in (0..=range.end.row()).rev() {
4785 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
4786 let fold_range = self.foldable_range_for_line(&display_map, row);
4787 if fold_range.end.row >= buffer_start_row {
4788 fold_ranges.push(fold_range);
4789 if row <= range.start.row() {
4790 break;
4791 }
4792 }
4793 }
4794 }
4795 }
4796
4797 self.fold_ranges(fold_ranges, cx);
4798 }
4799
4800 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
4801 let selections = self.local_selections::<Point>(cx);
4802 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4803 let buffer = &display_map.buffer_snapshot;
4804 let ranges = selections
4805 .iter()
4806 .map(|s| {
4807 let range = s.display_range(&display_map).sorted();
4808 let mut start = range.start.to_point(&display_map);
4809 let mut end = range.end.to_point(&display_map);
4810 start.column = 0;
4811 end.column = buffer.line_len(end.row);
4812 start..end
4813 })
4814 .collect::<Vec<_>>();
4815 self.unfold_ranges(ranges, cx);
4816 }
4817
4818 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
4819 let max_point = display_map.max_point();
4820 if display_row >= max_point.row() {
4821 false
4822 } else {
4823 let (start_indent, is_blank) = display_map.line_indent(display_row);
4824 if is_blank {
4825 false
4826 } else {
4827 for display_row in display_row + 1..=max_point.row() {
4828 let (indent, is_blank) = display_map.line_indent(display_row);
4829 if !is_blank {
4830 return indent > start_indent;
4831 }
4832 }
4833 false
4834 }
4835 }
4836 }
4837
4838 fn foldable_range_for_line(
4839 &self,
4840 display_map: &DisplaySnapshot,
4841 start_row: u32,
4842 ) -> Range<Point> {
4843 let max_point = display_map.max_point();
4844
4845 let (start_indent, _) = display_map.line_indent(start_row);
4846 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
4847 let mut end = None;
4848 for row in start_row + 1..=max_point.row() {
4849 let (indent, is_blank) = display_map.line_indent(row);
4850 if !is_blank && indent <= start_indent {
4851 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
4852 break;
4853 }
4854 }
4855
4856 let end = end.unwrap_or(max_point);
4857 return start.to_point(display_map)..end.to_point(display_map);
4858 }
4859
4860 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
4861 let selections = self.local_selections::<Point>(cx);
4862 let ranges = selections.into_iter().map(|s| s.start..s.end);
4863 self.fold_ranges(ranges, cx);
4864 }
4865
4866 fn fold_ranges<T: ToOffset>(
4867 &mut self,
4868 ranges: impl IntoIterator<Item = Range<T>>,
4869 cx: &mut ViewContext<Self>,
4870 ) {
4871 let mut ranges = ranges.into_iter().peekable();
4872 if ranges.peek().is_some() {
4873 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
4874 self.request_autoscroll(Autoscroll::Fit, cx);
4875 cx.notify();
4876 }
4877 }
4878
4879 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
4880 if !ranges.is_empty() {
4881 self.display_map
4882 .update(cx, |map, cx| map.unfold(ranges, cx));
4883 self.request_autoscroll(Autoscroll::Fit, cx);
4884 cx.notify();
4885 }
4886 }
4887
4888 pub fn insert_blocks(
4889 &mut self,
4890 blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
4891 cx: &mut ViewContext<Self>,
4892 ) -> Vec<BlockId> {
4893 let blocks = self
4894 .display_map
4895 .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
4896 self.request_autoscroll(Autoscroll::Fit, cx);
4897 blocks
4898 }
4899
4900 pub fn replace_blocks(
4901 &mut self,
4902 blocks: HashMap<BlockId, RenderBlock>,
4903 cx: &mut ViewContext<Self>,
4904 ) {
4905 self.display_map
4906 .update(cx, |display_map, _| display_map.replace_blocks(blocks));
4907 self.request_autoscroll(Autoscroll::Fit, cx);
4908 }
4909
4910 pub fn remove_blocks(&mut self, block_ids: HashSet<BlockId>, cx: &mut ViewContext<Self>) {
4911 self.display_map.update(cx, |display_map, cx| {
4912 display_map.remove_blocks(block_ids, cx)
4913 });
4914 }
4915
4916 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
4917 self.display_map
4918 .update(cx, |map, cx| map.snapshot(cx))
4919 .longest_row()
4920 }
4921
4922 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
4923 self.display_map
4924 .update(cx, |map, cx| map.snapshot(cx))
4925 .max_point()
4926 }
4927
4928 pub fn text(&self, cx: &AppContext) -> String {
4929 self.buffer.read(cx).read(cx).text()
4930 }
4931
4932 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
4933 self.display_map
4934 .update(cx, |map, cx| map.snapshot(cx))
4935 .text()
4936 }
4937
4938 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
4939 self.display_map
4940 .update(cx, |map, cx| map.set_wrap_width(width, cx))
4941 }
4942
4943 pub fn set_highlighted_rows(&mut self, rows: Option<Range<u32>>) {
4944 self.highlighted_rows = rows;
4945 }
4946
4947 pub fn highlighted_rows(&self) -> Option<Range<u32>> {
4948 self.highlighted_rows.clone()
4949 }
4950
4951 pub fn highlight_ranges<T: 'static>(
4952 &mut self,
4953 ranges: Vec<Range<Anchor>>,
4954 color: Color,
4955 cx: &mut ViewContext<Self>,
4956 ) {
4957 self.highlighted_ranges
4958 .insert(TypeId::of::<T>(), (color, ranges));
4959 cx.notify();
4960 }
4961
4962 pub fn clear_highlighted_ranges<T: 'static>(
4963 &mut self,
4964 cx: &mut ViewContext<Self>,
4965 ) -> Option<(Color, Vec<Range<Anchor>>)> {
4966 cx.notify();
4967 self.highlighted_ranges.remove(&TypeId::of::<T>())
4968 }
4969
4970 #[cfg(feature = "test-support")]
4971 pub fn all_highlighted_ranges(
4972 &mut self,
4973 cx: &mut ViewContext<Self>,
4974 ) -> Vec<(Range<DisplayPoint>, Color)> {
4975 let snapshot = self.snapshot(cx);
4976 let buffer = &snapshot.buffer_snapshot;
4977 let start = buffer.anchor_before(0);
4978 let end = buffer.anchor_after(buffer.len());
4979 self.highlighted_ranges_in_range(start..end, &snapshot)
4980 }
4981
4982 pub fn highlighted_ranges_for_type<T: 'static>(&self) -> Option<(Color, &[Range<Anchor>])> {
4983 self.highlighted_ranges
4984 .get(&TypeId::of::<T>())
4985 .map(|(color, ranges)| (*color, ranges.as_slice()))
4986 }
4987
4988 pub fn highlighted_ranges_in_range(
4989 &self,
4990 search_range: Range<Anchor>,
4991 display_snapshot: &DisplaySnapshot,
4992 ) -> Vec<(Range<DisplayPoint>, Color)> {
4993 let mut results = Vec::new();
4994 let buffer = &display_snapshot.buffer_snapshot;
4995 for (color, ranges) in self.highlighted_ranges.values() {
4996 let start_ix = match ranges.binary_search_by(|probe| {
4997 let cmp = probe.end.cmp(&search_range.start, &buffer).unwrap();
4998 if cmp.is_gt() {
4999 Ordering::Greater
5000 } else {
5001 Ordering::Less
5002 }
5003 }) {
5004 Ok(i) | Err(i) => i,
5005 };
5006 for range in &ranges[start_ix..] {
5007 if range.start.cmp(&search_range.end, &buffer).unwrap().is_ge() {
5008 break;
5009 }
5010 let start = range
5011 .start
5012 .to_point(buffer)
5013 .to_display_point(display_snapshot);
5014 let end = range
5015 .end
5016 .to_point(buffer)
5017 .to_display_point(display_snapshot);
5018 results.push((start..end, *color))
5019 }
5020 }
5021 results
5022 }
5023
5024 fn next_blink_epoch(&mut self) -> usize {
5025 self.blink_epoch += 1;
5026 self.blink_epoch
5027 }
5028
5029 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
5030 if !self.focused {
5031 return;
5032 }
5033
5034 self.show_local_cursors = true;
5035 cx.notify();
5036
5037 let epoch = self.next_blink_epoch();
5038 cx.spawn(|this, mut cx| {
5039 let this = this.downgrade();
5040 async move {
5041 Timer::after(CURSOR_BLINK_INTERVAL).await;
5042 if let Some(this) = this.upgrade(&cx) {
5043 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
5044 }
5045 }
5046 })
5047 .detach();
5048 }
5049
5050 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
5051 if epoch == self.blink_epoch {
5052 self.blinking_paused = false;
5053 self.blink_cursors(epoch, cx);
5054 }
5055 }
5056
5057 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
5058 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
5059 self.show_local_cursors = !self.show_local_cursors;
5060 cx.notify();
5061
5062 let epoch = self.next_blink_epoch();
5063 cx.spawn(|this, mut cx| {
5064 let this = this.downgrade();
5065 async move {
5066 Timer::after(CURSOR_BLINK_INTERVAL).await;
5067 if let Some(this) = this.upgrade(&cx) {
5068 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
5069 }
5070 }
5071 })
5072 .detach();
5073 }
5074 }
5075
5076 pub fn show_local_cursors(&self) -> bool {
5077 self.show_local_cursors
5078 }
5079
5080 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
5081 cx.notify();
5082 }
5083
5084 fn on_buffer_event(
5085 &mut self,
5086 _: ModelHandle<MultiBuffer>,
5087 event: &language::Event,
5088 cx: &mut ViewContext<Self>,
5089 ) {
5090 match event {
5091 language::Event::Edited => {
5092 self.refresh_active_diagnostics(cx);
5093 self.refresh_code_actions(cx);
5094 cx.emit(Event::Edited);
5095 }
5096 language::Event::Dirtied => cx.emit(Event::Dirtied),
5097 language::Event::Saved => cx.emit(Event::Saved),
5098 language::Event::FileHandleChanged => cx.emit(Event::TitleChanged),
5099 language::Event::Reloaded => cx.emit(Event::TitleChanged),
5100 language::Event::Closed => cx.emit(Event::Closed),
5101 language::Event::DiagnosticsUpdated => {
5102 self.refresh_active_diagnostics(cx);
5103 }
5104 _ => {}
5105 }
5106 }
5107
5108 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
5109 cx.notify();
5110 }
5111}
5112
5113impl EditorSnapshot {
5114 pub fn is_focused(&self) -> bool {
5115 self.is_focused
5116 }
5117
5118 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
5119 self.placeholder_text.as_ref()
5120 }
5121
5122 pub fn scroll_position(&self) -> Vector2F {
5123 compute_scroll_position(
5124 &self.display_snapshot,
5125 self.scroll_position,
5126 &self.scroll_top_anchor,
5127 )
5128 }
5129}
5130
5131impl Deref for EditorSnapshot {
5132 type Target = DisplaySnapshot;
5133
5134 fn deref(&self) -> &Self::Target {
5135 &self.display_snapshot
5136 }
5137}
5138
5139impl EditorSettings {
5140 #[cfg(any(test, feature = "test-support"))]
5141 pub fn test(cx: &AppContext) -> Self {
5142 use theme::{ContainedLabel, ContainedText, DiagnosticHeader, DiagnosticPathHeader};
5143
5144 Self {
5145 tab_size: 4,
5146 soft_wrap: SoftWrap::None,
5147 style: {
5148 let font_cache: &gpui::FontCache = cx.font_cache();
5149 let font_family_name = Arc::from("Monaco");
5150 let font_properties = Default::default();
5151 let font_family_id = font_cache.load_family(&[&font_family_name]).unwrap();
5152 let font_id = font_cache
5153 .select_font(font_family_id, &font_properties)
5154 .unwrap();
5155 let text = gpui::fonts::TextStyle {
5156 font_family_name,
5157 font_family_id,
5158 font_id,
5159 font_size: 14.,
5160 color: gpui::color::Color::from_u32(0xff0000ff),
5161 font_properties,
5162 underline: None,
5163 };
5164 let default_diagnostic_style = DiagnosticStyle {
5165 message: text.clone().into(),
5166 header: Default::default(),
5167 text_scale_factor: 1.,
5168 };
5169 EditorStyle {
5170 text: text.clone(),
5171 placeholder_text: None,
5172 background: Default::default(),
5173 gutter_background: Default::default(),
5174 gutter_padding_factor: 2.,
5175 active_line_background: Default::default(),
5176 highlighted_line_background: Default::default(),
5177 diff_background_deleted: Default::default(),
5178 diff_background_inserted: Default::default(),
5179 line_number: Default::default(),
5180 line_number_active: Default::default(),
5181 selection: Default::default(),
5182 guest_selections: Default::default(),
5183 syntax: Default::default(),
5184 diagnostic_path_header: DiagnosticPathHeader {
5185 container: Default::default(),
5186 filename: ContainedText {
5187 container: Default::default(),
5188 text: text.clone(),
5189 },
5190 path: ContainedText {
5191 container: Default::default(),
5192 text: text.clone(),
5193 },
5194 text_scale_factor: 1.,
5195 },
5196 diagnostic_header: DiagnosticHeader {
5197 container: Default::default(),
5198 message: ContainedLabel {
5199 container: Default::default(),
5200 label: text.clone().into(),
5201 },
5202 code: ContainedText {
5203 container: Default::default(),
5204 text: text.clone(),
5205 },
5206 icon_width_factor: 1.,
5207 text_scale_factor: 1.,
5208 },
5209 error_diagnostic: default_diagnostic_style.clone(),
5210 invalid_error_diagnostic: default_diagnostic_style.clone(),
5211 warning_diagnostic: default_diagnostic_style.clone(),
5212 invalid_warning_diagnostic: default_diagnostic_style.clone(),
5213 information_diagnostic: default_diagnostic_style.clone(),
5214 invalid_information_diagnostic: default_diagnostic_style.clone(),
5215 hint_diagnostic: default_diagnostic_style.clone(),
5216 invalid_hint_diagnostic: default_diagnostic_style.clone(),
5217 autocomplete: Default::default(),
5218 code_actions_indicator: Default::default(),
5219 }
5220 },
5221 }
5222 }
5223}
5224
5225fn compute_scroll_position(
5226 snapshot: &DisplaySnapshot,
5227 mut scroll_position: Vector2F,
5228 scroll_top_anchor: &Option<Anchor>,
5229) -> Vector2F {
5230 if let Some(anchor) = scroll_top_anchor {
5231 let scroll_top = anchor.to_display_point(snapshot).row() as f32;
5232 scroll_position.set_y(scroll_top + scroll_position.y());
5233 } else {
5234 scroll_position.set_y(0.);
5235 }
5236 scroll_position
5237}
5238
5239#[derive(Copy, Clone)]
5240pub enum Event {
5241 Activate,
5242 Edited,
5243 Blurred,
5244 Dirtied,
5245 Saved,
5246 TitleChanged,
5247 SelectionsChanged,
5248 Closed,
5249}
5250
5251impl Entity for Editor {
5252 type Event = Event;
5253}
5254
5255impl View for Editor {
5256 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
5257 let settings = (self.build_settings)(cx);
5258 self.display_map.update(cx, |map, cx| {
5259 map.set_font(
5260 settings.style.text.font_id,
5261 settings.style.text.font_size,
5262 cx,
5263 )
5264 });
5265 EditorElement::new(self.handle.clone(), settings).boxed()
5266 }
5267
5268 fn ui_name() -> &'static str {
5269 "Editor"
5270 }
5271
5272 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
5273 self.focused = true;
5274 self.blink_cursors(self.blink_epoch, cx);
5275 self.buffer.update(cx, |buffer, cx| {
5276 buffer.finalize_last_transaction(cx);
5277 buffer.set_active_selections(&self.selections, cx)
5278 });
5279 }
5280
5281 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
5282 self.focused = false;
5283 self.show_local_cursors = false;
5284 self.buffer
5285 .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
5286 self.hide_context_menu(cx);
5287 cx.emit(Event::Blurred);
5288 cx.notify();
5289 }
5290
5291 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
5292 let mut cx = Self::default_keymap_context();
5293 let mode = match self.mode {
5294 EditorMode::SingleLine => "single_line",
5295 EditorMode::AutoHeight { .. } => "auto_height",
5296 EditorMode::Full => "full",
5297 };
5298 cx.map.insert("mode".into(), mode.into());
5299 if self.pending_rename.is_some() {
5300 cx.set.insert("renaming".into());
5301 }
5302 match self.context_menu.as_ref() {
5303 Some(ContextMenu::Completions(_)) => {
5304 cx.set.insert("showing_completions".into());
5305 }
5306 Some(ContextMenu::CodeActions(_)) => {
5307 cx.set.insert("showing_code_actions".into());
5308 }
5309 None => {}
5310 }
5311 cx
5312 }
5313}
5314
5315impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
5316 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
5317 let start = self.start.to_point(buffer);
5318 let end = self.end.to_point(buffer);
5319 if self.reversed {
5320 end..start
5321 } else {
5322 start..end
5323 }
5324 }
5325
5326 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
5327 let start = self.start.to_offset(buffer);
5328 let end = self.end.to_offset(buffer);
5329 if self.reversed {
5330 end..start
5331 } else {
5332 start..end
5333 }
5334 }
5335
5336 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
5337 let start = self
5338 .start
5339 .to_point(&map.buffer_snapshot)
5340 .to_display_point(map);
5341 let end = self
5342 .end
5343 .to_point(&map.buffer_snapshot)
5344 .to_display_point(map);
5345 if self.reversed {
5346 end..start
5347 } else {
5348 start..end
5349 }
5350 }
5351
5352 fn spanned_rows(
5353 &self,
5354 include_end_if_at_line_start: bool,
5355 map: &DisplaySnapshot,
5356 ) -> Range<u32> {
5357 let start = self.start.to_point(&map.buffer_snapshot);
5358 let mut end = self.end.to_point(&map.buffer_snapshot);
5359 if !include_end_if_at_line_start && start.row != end.row && end.column == 0 {
5360 end.row -= 1;
5361 }
5362
5363 let buffer_start = map.prev_line_boundary(start).0;
5364 let buffer_end = map.next_line_boundary(end).0;
5365 buffer_start.row..buffer_end.row + 1
5366 }
5367}
5368
5369impl<T: InvalidationRegion> InvalidationStack<T> {
5370 fn invalidate<S>(&mut self, selections: &[Selection<S>], buffer: &MultiBufferSnapshot)
5371 where
5372 S: Clone + ToOffset,
5373 {
5374 while let Some(region) = self.last() {
5375 let all_selections_inside_invalidation_ranges =
5376 if selections.len() == region.ranges().len() {
5377 selections
5378 .iter()
5379 .zip(region.ranges().iter().map(|r| r.to_offset(&buffer)))
5380 .all(|(selection, invalidation_range)| {
5381 let head = selection.head().to_offset(&buffer);
5382 invalidation_range.start <= head && invalidation_range.end >= head
5383 })
5384 } else {
5385 false
5386 };
5387
5388 if all_selections_inside_invalidation_ranges {
5389 break;
5390 } else {
5391 self.pop();
5392 }
5393 }
5394 }
5395}
5396
5397impl<T> Default for InvalidationStack<T> {
5398 fn default() -> Self {
5399 Self(Default::default())
5400 }
5401}
5402
5403impl<T> Deref for InvalidationStack<T> {
5404 type Target = Vec<T>;
5405
5406 fn deref(&self) -> &Self::Target {
5407 &self.0
5408 }
5409}
5410
5411impl<T> DerefMut for InvalidationStack<T> {
5412 fn deref_mut(&mut self) -> &mut Self::Target {
5413 &mut self.0
5414 }
5415}
5416
5417impl InvalidationRegion for BracketPairState {
5418 fn ranges(&self) -> &[Range<Anchor>] {
5419 &self.ranges
5420 }
5421}
5422
5423impl InvalidationRegion for SnippetState {
5424 fn ranges(&self) -> &[Range<Anchor>] {
5425 &self.ranges[self.active_index]
5426 }
5427}
5428
5429pub fn diagnostic_block_renderer(
5430 diagnostic: Diagnostic,
5431 is_valid: bool,
5432 build_settings: BuildSettings,
5433) -> RenderBlock {
5434 let mut highlighted_lines = Vec::new();
5435 for line in diagnostic.message.lines() {
5436 highlighted_lines.push(highlight_diagnostic_message(line));
5437 }
5438
5439 Arc::new(move |cx: &BlockContext| {
5440 let settings = build_settings(cx);
5441 let style = diagnostic_style(diagnostic.severity, is_valid, &settings.style);
5442 let font_size = (style.text_scale_factor * settings.style.text.font_size).round();
5443 Flex::column()
5444 .with_children(highlighted_lines.iter().map(|(line, highlights)| {
5445 Label::new(
5446 line.clone(),
5447 style.message.clone().with_font_size(font_size),
5448 )
5449 .with_highlights(highlights.clone())
5450 .contained()
5451 .with_margin_left(cx.anchor_x)
5452 .boxed()
5453 }))
5454 .aligned()
5455 .left()
5456 .boxed()
5457 })
5458}
5459
5460pub fn highlight_diagnostic_message(message: &str) -> (String, Vec<usize>) {
5461 let mut message_without_backticks = String::new();
5462 let mut prev_offset = 0;
5463 let mut inside_block = false;
5464 let mut highlights = Vec::new();
5465 for (match_ix, (offset, _)) in message
5466 .match_indices('`')
5467 .chain([(message.len(), "")])
5468 .enumerate()
5469 {
5470 message_without_backticks.push_str(&message[prev_offset..offset]);
5471 if inside_block {
5472 highlights.extend(prev_offset - match_ix..offset - match_ix);
5473 }
5474
5475 inside_block = !inside_block;
5476 prev_offset = offset + 1;
5477 }
5478
5479 (message_without_backticks, highlights)
5480}
5481
5482pub fn diagnostic_style(
5483 severity: DiagnosticSeverity,
5484 valid: bool,
5485 style: &EditorStyle,
5486) -> DiagnosticStyle {
5487 match (severity, valid) {
5488 (DiagnosticSeverity::ERROR, true) => style.error_diagnostic.clone(),
5489 (DiagnosticSeverity::ERROR, false) => style.invalid_error_diagnostic.clone(),
5490 (DiagnosticSeverity::WARNING, true) => style.warning_diagnostic.clone(),
5491 (DiagnosticSeverity::WARNING, false) => style.invalid_warning_diagnostic.clone(),
5492 (DiagnosticSeverity::INFORMATION, true) => style.information_diagnostic.clone(),
5493 (DiagnosticSeverity::INFORMATION, false) => style.invalid_information_diagnostic.clone(),
5494 (DiagnosticSeverity::HINT, true) => style.hint_diagnostic.clone(),
5495 (DiagnosticSeverity::HINT, false) => style.invalid_hint_diagnostic.clone(),
5496 _ => DiagnosticStyle {
5497 message: style.text.clone().into(),
5498 header: Default::default(),
5499 text_scale_factor: 1.,
5500 },
5501 }
5502}
5503
5504pub fn settings_builder(
5505 buffer: WeakModelHandle<MultiBuffer>,
5506 settings: watch::Receiver<workspace::Settings>,
5507) -> BuildSettings {
5508 Arc::new(move |cx| {
5509 let settings = settings.borrow();
5510 let font_cache = cx.font_cache();
5511 let font_family_id = settings.buffer_font_family;
5512 let font_family_name = cx.font_cache().family_name(font_family_id).unwrap();
5513 let font_properties = Default::default();
5514 let font_id = font_cache
5515 .select_font(font_family_id, &font_properties)
5516 .unwrap();
5517 let font_size = settings.buffer_font_size;
5518
5519 let mut theme = settings.theme.editor.clone();
5520 theme.text = TextStyle {
5521 color: theme.text.color,
5522 font_family_name,
5523 font_family_id,
5524 font_id,
5525 font_size,
5526 font_properties,
5527 underline: None,
5528 };
5529 let language = buffer.upgrade(cx).and_then(|buf| buf.read(cx).language(cx));
5530 let soft_wrap = match settings.soft_wrap(language) {
5531 workspace::settings::SoftWrap::None => SoftWrap::None,
5532 workspace::settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
5533 workspace::settings::SoftWrap::PreferredLineLength => {
5534 SoftWrap::Column(settings.preferred_line_length(language).saturating_sub(1))
5535 }
5536 };
5537
5538 EditorSettings {
5539 tab_size: settings.tab_size,
5540 soft_wrap,
5541 style: theme,
5542 }
5543 })
5544}
5545
5546pub fn combine_syntax_and_fuzzy_match_highlights(
5547 text: &str,
5548 default_style: HighlightStyle,
5549 syntax_ranges: impl Iterator<Item = (Range<usize>, HighlightStyle)>,
5550 match_indices: &[usize],
5551) -> Vec<(Range<usize>, HighlightStyle)> {
5552 let mut result = Vec::new();
5553 let mut match_indices = match_indices.iter().copied().peekable();
5554
5555 for (range, mut syntax_highlight) in syntax_ranges.chain([(usize::MAX..0, Default::default())])
5556 {
5557 syntax_highlight.font_properties.weight(Default::default());
5558
5559 // Add highlights for any fuzzy match characters before the next
5560 // syntax highlight range.
5561 while let Some(&match_index) = match_indices.peek() {
5562 if match_index >= range.start {
5563 break;
5564 }
5565 match_indices.next();
5566 let end_index = char_ix_after(match_index, text);
5567 let mut match_style = default_style;
5568 match_style.font_properties.weight(fonts::Weight::BOLD);
5569 result.push((match_index..end_index, match_style));
5570 }
5571
5572 if range.start == usize::MAX {
5573 break;
5574 }
5575
5576 // Add highlights for any fuzzy match characters within the
5577 // syntax highlight range.
5578 let mut offset = range.start;
5579 while let Some(&match_index) = match_indices.peek() {
5580 if match_index >= range.end {
5581 break;
5582 }
5583
5584 match_indices.next();
5585 if match_index > offset {
5586 result.push((offset..match_index, syntax_highlight));
5587 }
5588
5589 let mut end_index = char_ix_after(match_index, text);
5590 while let Some(&next_match_index) = match_indices.peek() {
5591 if next_match_index == end_index && next_match_index < range.end {
5592 end_index = char_ix_after(next_match_index, text);
5593 match_indices.next();
5594 } else {
5595 break;
5596 }
5597 }
5598
5599 let mut match_style = syntax_highlight;
5600 match_style.font_properties.weight(fonts::Weight::BOLD);
5601 result.push((match_index..end_index, match_style));
5602 offset = end_index;
5603 }
5604
5605 if offset < range.end {
5606 result.push((offset..range.end, syntax_highlight));
5607 }
5608 }
5609
5610 fn char_ix_after(ix: usize, text: &str) -> usize {
5611 ix + text[ix..].chars().next().unwrap().len_utf8()
5612 }
5613
5614 result
5615}
5616
5617fn styled_runs_for_completion_label<'a>(
5618 label: &'a CompletionLabel,
5619 default_color: Color,
5620 syntax_theme: &'a theme::SyntaxTheme,
5621) -> impl 'a + Iterator<Item = (Range<usize>, HighlightStyle)> {
5622 const MUTED_OPACITY: usize = 165;
5623
5624 let mut muted_default_style = HighlightStyle {
5625 color: default_color,
5626 ..Default::default()
5627 };
5628 muted_default_style.color.a = ((default_color.a as usize * MUTED_OPACITY) / 255) as u8;
5629
5630 let mut prev_end = label.filter_range.end;
5631 label
5632 .runs
5633 .iter()
5634 .enumerate()
5635 .flat_map(move |(ix, (range, highlight_id))| {
5636 let style = if let Some(style) = highlight_id.style(syntax_theme) {
5637 style
5638 } else {
5639 return Default::default();
5640 };
5641 let mut muted_style = style.clone();
5642 muted_style.color.a = ((style.color.a as usize * MUTED_OPACITY) / 255) as u8;
5643
5644 let mut runs = SmallVec::<[(Range<usize>, HighlightStyle); 3]>::new();
5645 if range.start >= label.filter_range.end {
5646 if range.start > prev_end {
5647 runs.push((prev_end..range.start, muted_default_style));
5648 }
5649 runs.push((range.clone(), muted_style));
5650 } else if range.end <= label.filter_range.end {
5651 runs.push((range.clone(), style));
5652 } else {
5653 runs.push((range.start..label.filter_range.end, style));
5654 runs.push((label.filter_range.end..range.end, muted_style));
5655 }
5656 prev_end = cmp::max(prev_end, range.end);
5657
5658 if ix + 1 == label.runs.len() && label.text.len() > prev_end {
5659 runs.push((prev_end..label.text.len(), muted_default_style));
5660 }
5661
5662 runs
5663 })
5664}
5665
5666#[cfg(test)]
5667mod tests {
5668 use super::*;
5669 use language::LanguageConfig;
5670 use lsp::FakeLanguageServer;
5671 use project::{FakeFs, ProjectPath};
5672 use smol::stream::StreamExt;
5673 use std::{cell::RefCell, rc::Rc, time::Instant};
5674 use text::Point;
5675 use unindent::Unindent;
5676 use util::test::sample_text;
5677
5678 #[gpui::test]
5679 fn test_undo_redo_with_selection_restoration(cx: &mut MutableAppContext) {
5680 let mut now = Instant::now();
5681 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
5682 let group_interval = buffer.read(cx).transaction_group_interval();
5683 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5684 let settings = EditorSettings::test(cx);
5685 let (_, editor) = cx.add_window(Default::default(), |cx| {
5686 build_editor(buffer.clone(), settings, cx)
5687 });
5688
5689 editor.update(cx, |editor, cx| {
5690 editor.start_transaction_at(now, cx);
5691 editor.select_ranges([2..4], None, cx);
5692 editor.insert("cd", cx);
5693 editor.end_transaction_at(now, cx);
5694 assert_eq!(editor.text(cx), "12cd56");
5695 assert_eq!(editor.selected_ranges(cx), vec![4..4]);
5696
5697 editor.start_transaction_at(now, cx);
5698 editor.select_ranges([4..5], None, cx);
5699 editor.insert("e", cx);
5700 editor.end_transaction_at(now, cx);
5701 assert_eq!(editor.text(cx), "12cde6");
5702 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
5703
5704 now += group_interval + Duration::from_millis(1);
5705 editor.select_ranges([2..2], None, cx);
5706
5707 // Simulate an edit in another editor
5708 buffer.update(cx, |buffer, cx| {
5709 buffer.start_transaction_at(now, cx);
5710 buffer.edit([0..1], "a", cx);
5711 buffer.edit([1..1], "b", cx);
5712 buffer.end_transaction_at(now, cx);
5713 });
5714
5715 assert_eq!(editor.text(cx), "ab2cde6");
5716 assert_eq!(editor.selected_ranges(cx), vec![3..3]);
5717
5718 // Last transaction happened past the group interval in a different editor.
5719 // Undo it individually and don't restore selections.
5720 editor.undo(&Undo, cx);
5721 assert_eq!(editor.text(cx), "12cde6");
5722 assert_eq!(editor.selected_ranges(cx), vec![2..2]);
5723
5724 // First two transactions happened within the group interval in this editor.
5725 // Undo them together and restore selections.
5726 editor.undo(&Undo, cx);
5727 editor.undo(&Undo, cx); // Undo stack is empty here, so this is a no-op.
5728 assert_eq!(editor.text(cx), "123456");
5729 assert_eq!(editor.selected_ranges(cx), vec![0..0]);
5730
5731 // Redo the first two transactions together.
5732 editor.redo(&Redo, cx);
5733 assert_eq!(editor.text(cx), "12cde6");
5734 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
5735
5736 // Redo the last transaction on its own.
5737 editor.redo(&Redo, cx);
5738 assert_eq!(editor.text(cx), "ab2cde6");
5739 assert_eq!(editor.selected_ranges(cx), vec![6..6]);
5740
5741 // Test empty transactions.
5742 editor.start_transaction_at(now, cx);
5743 editor.end_transaction_at(now, cx);
5744 editor.undo(&Undo, cx);
5745 assert_eq!(editor.text(cx), "12cde6");
5746 });
5747 }
5748
5749 #[gpui::test]
5750 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
5751 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
5752 let settings = EditorSettings::test(cx);
5753 let (_, editor) =
5754 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5755
5756 editor.update(cx, |view, cx| {
5757 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
5758 });
5759
5760 assert_eq!(
5761 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5762 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
5763 );
5764
5765 editor.update(cx, |view, cx| {
5766 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
5767 });
5768
5769 assert_eq!(
5770 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5771 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
5772 );
5773
5774 editor.update(cx, |view, cx| {
5775 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
5776 });
5777
5778 assert_eq!(
5779 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5780 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
5781 );
5782
5783 editor.update(cx, |view, cx| {
5784 view.end_selection(cx);
5785 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
5786 });
5787
5788 assert_eq!(
5789 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5790 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
5791 );
5792
5793 editor.update(cx, |view, cx| {
5794 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
5795 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
5796 });
5797
5798 assert_eq!(
5799 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5800 [
5801 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
5802 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
5803 ]
5804 );
5805
5806 editor.update(cx, |view, cx| {
5807 view.end_selection(cx);
5808 });
5809
5810 assert_eq!(
5811 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5812 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
5813 );
5814 }
5815
5816 #[gpui::test]
5817 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
5818 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
5819 let settings = EditorSettings::test(cx);
5820 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5821
5822 view.update(cx, |view, cx| {
5823 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
5824 assert_eq!(
5825 view.selected_display_ranges(cx),
5826 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
5827 );
5828 });
5829
5830 view.update(cx, |view, cx| {
5831 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
5832 assert_eq!(
5833 view.selected_display_ranges(cx),
5834 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
5835 );
5836 });
5837
5838 view.update(cx, |view, cx| {
5839 view.cancel(&Cancel, cx);
5840 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
5841 assert_eq!(
5842 view.selected_display_ranges(cx),
5843 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
5844 );
5845 });
5846 }
5847
5848 #[gpui::test]
5849 fn test_navigation_history(cx: &mut gpui::MutableAppContext) {
5850 cx.add_window(Default::default(), |cx| {
5851 use workspace::ItemView;
5852 let nav_history = Rc::new(RefCell::new(workspace::NavHistory::default()));
5853 let settings = EditorSettings::test(&cx);
5854 let buffer = MultiBuffer::build_simple(&sample_text(30, 5, 'a'), cx);
5855 let mut editor = build_editor(buffer.clone(), settings, cx);
5856 editor.nav_history = Some(ItemNavHistory::new(nav_history.clone(), &cx.handle()));
5857
5858 // Move the cursor a small distance.
5859 // Nothing is added to the navigation history.
5860 editor.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
5861 editor.select_display_ranges(&[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)], cx);
5862 assert!(nav_history.borrow_mut().pop_backward().is_none());
5863
5864 // Move the cursor a large distance.
5865 // The history can jump back to the previous position.
5866 editor.select_display_ranges(&[DisplayPoint::new(13, 0)..DisplayPoint::new(13, 3)], cx);
5867 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
5868 editor.navigate(nav_entry.data.unwrap(), cx);
5869 assert_eq!(nav_entry.item_view.id(), cx.view_id());
5870 assert_eq!(
5871 editor.selected_display_ranges(cx),
5872 &[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)]
5873 );
5874
5875 // Move the cursor a small distance via the mouse.
5876 // Nothing is added to the navigation history.
5877 editor.begin_selection(DisplayPoint::new(5, 0), false, 1, cx);
5878 editor.end_selection(cx);
5879 assert_eq!(
5880 editor.selected_display_ranges(cx),
5881 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
5882 );
5883 assert!(nav_history.borrow_mut().pop_backward().is_none());
5884
5885 // Move the cursor a large distance via the mouse.
5886 // The history can jump back to the previous position.
5887 editor.begin_selection(DisplayPoint::new(15, 0), false, 1, cx);
5888 editor.end_selection(cx);
5889 assert_eq!(
5890 editor.selected_display_ranges(cx),
5891 &[DisplayPoint::new(15, 0)..DisplayPoint::new(15, 0)]
5892 );
5893 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
5894 editor.navigate(nav_entry.data.unwrap(), cx);
5895 assert_eq!(nav_entry.item_view.id(), cx.view_id());
5896 assert_eq!(
5897 editor.selected_display_ranges(cx),
5898 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
5899 );
5900
5901 editor
5902 });
5903 }
5904
5905 #[gpui::test]
5906 fn test_cancel(cx: &mut gpui::MutableAppContext) {
5907 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
5908 let settings = EditorSettings::test(cx);
5909 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5910
5911 view.update(cx, |view, cx| {
5912 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
5913 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
5914 view.end_selection(cx);
5915
5916 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
5917 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
5918 view.end_selection(cx);
5919 assert_eq!(
5920 view.selected_display_ranges(cx),
5921 [
5922 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5923 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
5924 ]
5925 );
5926 });
5927
5928 view.update(cx, |view, cx| {
5929 view.cancel(&Cancel, cx);
5930 assert_eq!(
5931 view.selected_display_ranges(cx),
5932 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
5933 );
5934 });
5935
5936 view.update(cx, |view, cx| {
5937 view.cancel(&Cancel, cx);
5938 assert_eq!(
5939 view.selected_display_ranges(cx),
5940 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
5941 );
5942 });
5943 }
5944
5945 #[gpui::test]
5946 fn test_fold(cx: &mut gpui::MutableAppContext) {
5947 let buffer = MultiBuffer::build_simple(
5948 &"
5949 impl Foo {
5950 // Hello!
5951
5952 fn a() {
5953 1
5954 }
5955
5956 fn b() {
5957 2
5958 }
5959
5960 fn c() {
5961 3
5962 }
5963 }
5964 "
5965 .unindent(),
5966 cx,
5967 );
5968 let settings = EditorSettings::test(&cx);
5969 let (_, view) = cx.add_window(Default::default(), |cx| {
5970 build_editor(buffer.clone(), settings, cx)
5971 });
5972
5973 view.update(cx, |view, cx| {
5974 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx);
5975 view.fold(&Fold, cx);
5976 assert_eq!(
5977 view.display_text(cx),
5978 "
5979 impl Foo {
5980 // Hello!
5981
5982 fn a() {
5983 1
5984 }
5985
5986 fn b() {…
5987 }
5988
5989 fn c() {…
5990 }
5991 }
5992 "
5993 .unindent(),
5994 );
5995
5996 view.fold(&Fold, cx);
5997 assert_eq!(
5998 view.display_text(cx),
5999 "
6000 impl Foo {…
6001 }
6002 "
6003 .unindent(),
6004 );
6005
6006 view.unfold(&Unfold, cx);
6007 assert_eq!(
6008 view.display_text(cx),
6009 "
6010 impl Foo {
6011 // Hello!
6012
6013 fn a() {
6014 1
6015 }
6016
6017 fn b() {…
6018 }
6019
6020 fn c() {…
6021 }
6022 }
6023 "
6024 .unindent(),
6025 );
6026
6027 view.unfold(&Unfold, cx);
6028 assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text());
6029 });
6030 }
6031
6032 #[gpui::test]
6033 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
6034 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
6035 let settings = EditorSettings::test(&cx);
6036 let (_, view) = cx.add_window(Default::default(), |cx| {
6037 build_editor(buffer.clone(), settings, cx)
6038 });
6039
6040 buffer.update(cx, |buffer, cx| {
6041 buffer.edit(
6042 vec![
6043 Point::new(1, 0)..Point::new(1, 0),
6044 Point::new(1, 1)..Point::new(1, 1),
6045 ],
6046 "\t",
6047 cx,
6048 );
6049 });
6050
6051 view.update(cx, |view, cx| {
6052 assert_eq!(
6053 view.selected_display_ranges(cx),
6054 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6055 );
6056
6057 view.move_down(&MoveDown, cx);
6058 assert_eq!(
6059 view.selected_display_ranges(cx),
6060 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6061 );
6062
6063 view.move_right(&MoveRight, cx);
6064 assert_eq!(
6065 view.selected_display_ranges(cx),
6066 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
6067 );
6068
6069 view.move_left(&MoveLeft, cx);
6070 assert_eq!(
6071 view.selected_display_ranges(cx),
6072 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6073 );
6074
6075 view.move_up(&MoveUp, cx);
6076 assert_eq!(
6077 view.selected_display_ranges(cx),
6078 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6079 );
6080
6081 view.move_to_end(&MoveToEnd, cx);
6082 assert_eq!(
6083 view.selected_display_ranges(cx),
6084 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
6085 );
6086
6087 view.move_to_beginning(&MoveToBeginning, cx);
6088 assert_eq!(
6089 view.selected_display_ranges(cx),
6090 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6091 );
6092
6093 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx);
6094 view.select_to_beginning(&SelectToBeginning, cx);
6095 assert_eq!(
6096 view.selected_display_ranges(cx),
6097 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
6098 );
6099
6100 view.select_to_end(&SelectToEnd, cx);
6101 assert_eq!(
6102 view.selected_display_ranges(cx),
6103 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
6104 );
6105 });
6106 }
6107
6108 #[gpui::test]
6109 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
6110 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
6111 let settings = EditorSettings::test(&cx);
6112 let (_, view) = cx.add_window(Default::default(), |cx| {
6113 build_editor(buffer.clone(), settings, cx)
6114 });
6115
6116 assert_eq!('ⓐ'.len_utf8(), 3);
6117 assert_eq!('α'.len_utf8(), 2);
6118
6119 view.update(cx, |view, cx| {
6120 view.fold_ranges(
6121 vec![
6122 Point::new(0, 6)..Point::new(0, 12),
6123 Point::new(1, 2)..Point::new(1, 4),
6124 Point::new(2, 4)..Point::new(2, 8),
6125 ],
6126 cx,
6127 );
6128 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
6129
6130 view.move_right(&MoveRight, cx);
6131 assert_eq!(
6132 view.selected_display_ranges(cx),
6133 &[empty_range(0, "ⓐ".len())]
6134 );
6135 view.move_right(&MoveRight, cx);
6136 assert_eq!(
6137 view.selected_display_ranges(cx),
6138 &[empty_range(0, "ⓐⓑ".len())]
6139 );
6140 view.move_right(&MoveRight, cx);
6141 assert_eq!(
6142 view.selected_display_ranges(cx),
6143 &[empty_range(0, "ⓐⓑ…".len())]
6144 );
6145
6146 view.move_down(&MoveDown, cx);
6147 assert_eq!(
6148 view.selected_display_ranges(cx),
6149 &[empty_range(1, "ab…".len())]
6150 );
6151 view.move_left(&MoveLeft, cx);
6152 assert_eq!(
6153 view.selected_display_ranges(cx),
6154 &[empty_range(1, "ab".len())]
6155 );
6156 view.move_left(&MoveLeft, cx);
6157 assert_eq!(
6158 view.selected_display_ranges(cx),
6159 &[empty_range(1, "a".len())]
6160 );
6161
6162 view.move_down(&MoveDown, cx);
6163 assert_eq!(
6164 view.selected_display_ranges(cx),
6165 &[empty_range(2, "α".len())]
6166 );
6167 view.move_right(&MoveRight, cx);
6168 assert_eq!(
6169 view.selected_display_ranges(cx),
6170 &[empty_range(2, "αβ".len())]
6171 );
6172 view.move_right(&MoveRight, cx);
6173 assert_eq!(
6174 view.selected_display_ranges(cx),
6175 &[empty_range(2, "αβ…".len())]
6176 );
6177 view.move_right(&MoveRight, cx);
6178 assert_eq!(
6179 view.selected_display_ranges(cx),
6180 &[empty_range(2, "αβ…ε".len())]
6181 );
6182
6183 view.move_up(&MoveUp, cx);
6184 assert_eq!(
6185 view.selected_display_ranges(cx),
6186 &[empty_range(1, "ab…e".len())]
6187 );
6188 view.move_up(&MoveUp, cx);
6189 assert_eq!(
6190 view.selected_display_ranges(cx),
6191 &[empty_range(0, "ⓐⓑ…ⓔ".len())]
6192 );
6193 view.move_left(&MoveLeft, cx);
6194 assert_eq!(
6195 view.selected_display_ranges(cx),
6196 &[empty_range(0, "ⓐⓑ…".len())]
6197 );
6198 view.move_left(&MoveLeft, cx);
6199 assert_eq!(
6200 view.selected_display_ranges(cx),
6201 &[empty_range(0, "ⓐⓑ".len())]
6202 );
6203 view.move_left(&MoveLeft, cx);
6204 assert_eq!(
6205 view.selected_display_ranges(cx),
6206 &[empty_range(0, "ⓐ".len())]
6207 );
6208 });
6209 }
6210
6211 #[gpui::test]
6212 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
6213 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
6214 let settings = EditorSettings::test(&cx);
6215 let (_, view) = cx.add_window(Default::default(), |cx| {
6216 build_editor(buffer.clone(), settings, cx)
6217 });
6218 view.update(cx, |view, cx| {
6219 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx);
6220 view.move_down(&MoveDown, cx);
6221 assert_eq!(
6222 view.selected_display_ranges(cx),
6223 &[empty_range(1, "abcd".len())]
6224 );
6225
6226 view.move_down(&MoveDown, cx);
6227 assert_eq!(
6228 view.selected_display_ranges(cx),
6229 &[empty_range(2, "αβγ".len())]
6230 );
6231
6232 view.move_down(&MoveDown, cx);
6233 assert_eq!(
6234 view.selected_display_ranges(cx),
6235 &[empty_range(3, "abcd".len())]
6236 );
6237
6238 view.move_down(&MoveDown, cx);
6239 assert_eq!(
6240 view.selected_display_ranges(cx),
6241 &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
6242 );
6243
6244 view.move_up(&MoveUp, cx);
6245 assert_eq!(
6246 view.selected_display_ranges(cx),
6247 &[empty_range(3, "abcd".len())]
6248 );
6249
6250 view.move_up(&MoveUp, cx);
6251 assert_eq!(
6252 view.selected_display_ranges(cx),
6253 &[empty_range(2, "αβγ".len())]
6254 );
6255 });
6256 }
6257
6258 #[gpui::test]
6259 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
6260 let buffer = MultiBuffer::build_simple("abc\n def", cx);
6261 let settings = EditorSettings::test(&cx);
6262 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6263 view.update(cx, |view, cx| {
6264 view.select_display_ranges(
6265 &[
6266 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6267 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
6268 ],
6269 cx,
6270 );
6271 });
6272
6273 view.update(cx, |view, cx| {
6274 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6275 assert_eq!(
6276 view.selected_display_ranges(cx),
6277 &[
6278 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6279 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6280 ]
6281 );
6282 });
6283
6284 view.update(cx, |view, cx| {
6285 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6286 assert_eq!(
6287 view.selected_display_ranges(cx),
6288 &[
6289 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6290 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6291 ]
6292 );
6293 });
6294
6295 view.update(cx, |view, cx| {
6296 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6297 assert_eq!(
6298 view.selected_display_ranges(cx),
6299 &[
6300 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6301 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6302 ]
6303 );
6304 });
6305
6306 view.update(cx, |view, cx| {
6307 view.move_to_end_of_line(&MoveToEndOfLine, cx);
6308 assert_eq!(
6309 view.selected_display_ranges(cx),
6310 &[
6311 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6312 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6313 ]
6314 );
6315 });
6316
6317 // Moving to the end of line again is a no-op.
6318 view.update(cx, |view, cx| {
6319 view.move_to_end_of_line(&MoveToEndOfLine, cx);
6320 assert_eq!(
6321 view.selected_display_ranges(cx),
6322 &[
6323 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6324 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6325 ]
6326 );
6327 });
6328
6329 view.update(cx, |view, cx| {
6330 view.move_left(&MoveLeft, cx);
6331 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6332 assert_eq!(
6333 view.selected_display_ranges(cx),
6334 &[
6335 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6336 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
6337 ]
6338 );
6339 });
6340
6341 view.update(cx, |view, cx| {
6342 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6343 assert_eq!(
6344 view.selected_display_ranges(cx),
6345 &[
6346 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6347 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
6348 ]
6349 );
6350 });
6351
6352 view.update(cx, |view, cx| {
6353 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6354 assert_eq!(
6355 view.selected_display_ranges(cx),
6356 &[
6357 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6358 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
6359 ]
6360 );
6361 });
6362
6363 view.update(cx, |view, cx| {
6364 view.select_to_end_of_line(&SelectToEndOfLine(true), cx);
6365 assert_eq!(
6366 view.selected_display_ranges(cx),
6367 &[
6368 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
6369 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
6370 ]
6371 );
6372 });
6373
6374 view.update(cx, |view, cx| {
6375 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
6376 assert_eq!(view.display_text(cx), "ab\n de");
6377 assert_eq!(
6378 view.selected_display_ranges(cx),
6379 &[
6380 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6381 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
6382 ]
6383 );
6384 });
6385
6386 view.update(cx, |view, cx| {
6387 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
6388 assert_eq!(view.display_text(cx), "\n");
6389 assert_eq!(
6390 view.selected_display_ranges(cx),
6391 &[
6392 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6393 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6394 ]
6395 );
6396 });
6397 }
6398
6399 #[gpui::test]
6400 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
6401 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
6402 let settings = EditorSettings::test(&cx);
6403 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6404 view.update(cx, |view, cx| {
6405 view.select_display_ranges(
6406 &[
6407 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
6408 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
6409 ],
6410 cx,
6411 );
6412 });
6413
6414 view.update(cx, |view, cx| {
6415 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6416 assert_eq!(
6417 view.selected_display_ranges(cx),
6418 &[
6419 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
6420 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
6421 ]
6422 );
6423 });
6424
6425 view.update(cx, |view, cx| {
6426 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6427 assert_eq!(
6428 view.selected_display_ranges(cx),
6429 &[
6430 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
6431 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2),
6432 ]
6433 );
6434 });
6435
6436 view.update(cx, |view, cx| {
6437 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6438 assert_eq!(
6439 view.selected_display_ranges(cx),
6440 &[
6441 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
6442 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
6443 ]
6444 );
6445 });
6446
6447 view.update(cx, |view, cx| {
6448 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6449 assert_eq!(
6450 view.selected_display_ranges(cx),
6451 &[
6452 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6453 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6454 ]
6455 );
6456 });
6457
6458 view.update(cx, |view, cx| {
6459 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6460 assert_eq!(
6461 view.selected_display_ranges(cx),
6462 &[
6463 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6464 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 23),
6465 ]
6466 );
6467 });
6468
6469 view.update(cx, |view, cx| {
6470 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6471 assert_eq!(
6472 view.selected_display_ranges(cx),
6473 &[
6474 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6475 DisplayPoint::new(0, 24)..DisplayPoint::new(0, 24),
6476 ]
6477 );
6478 });
6479
6480 view.update(cx, |view, cx| {
6481 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6482 assert_eq!(
6483 view.selected_display_ranges(cx),
6484 &[
6485 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
6486 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6487 ]
6488 );
6489 });
6490
6491 view.update(cx, |view, cx| {
6492 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6493 assert_eq!(
6494 view.selected_display_ranges(cx),
6495 &[
6496 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
6497 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
6498 ]
6499 );
6500 });
6501
6502 view.update(cx, |view, cx| {
6503 view.move_right(&MoveRight, cx);
6504 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
6505 assert_eq!(
6506 view.selected_display_ranges(cx),
6507 &[
6508 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
6509 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
6510 ]
6511 );
6512 });
6513
6514 view.update(cx, |view, cx| {
6515 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
6516 assert_eq!(
6517 view.selected_display_ranges(cx),
6518 &[
6519 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 7),
6520 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 2),
6521 ]
6522 );
6523 });
6524
6525 view.update(cx, |view, cx| {
6526 view.select_to_next_word_boundary(&SelectToNextWordBoundary, cx);
6527 assert_eq!(
6528 view.selected_display_ranges(cx),
6529 &[
6530 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
6531 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
6532 ]
6533 );
6534 });
6535 }
6536
6537 #[gpui::test]
6538 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
6539 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
6540 let settings = EditorSettings::test(&cx);
6541 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6542
6543 view.update(cx, |view, cx| {
6544 view.set_wrap_width(Some(140.), cx);
6545 assert_eq!(
6546 view.display_text(cx),
6547 "use one::{\n two::three::\n four::five\n};"
6548 );
6549
6550 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx);
6551
6552 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6553 assert_eq!(
6554 view.selected_display_ranges(cx),
6555 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
6556 );
6557
6558 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6559 assert_eq!(
6560 view.selected_display_ranges(cx),
6561 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
6562 );
6563
6564 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6565 assert_eq!(
6566 view.selected_display_ranges(cx),
6567 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
6568 );
6569
6570 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6571 assert_eq!(
6572 view.selected_display_ranges(cx),
6573 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
6574 );
6575
6576 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6577 assert_eq!(
6578 view.selected_display_ranges(cx),
6579 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
6580 );
6581
6582 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6583 assert_eq!(
6584 view.selected_display_ranges(cx),
6585 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
6586 );
6587 });
6588 }
6589
6590 #[gpui::test]
6591 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
6592 let buffer = MultiBuffer::build_simple("one two three four", cx);
6593 let settings = EditorSettings::test(&cx);
6594 let (_, view) = cx.add_window(Default::default(), |cx| {
6595 build_editor(buffer.clone(), settings, cx)
6596 });
6597
6598 view.update(cx, |view, cx| {
6599 view.select_display_ranges(
6600 &[
6601 // an empty selection - the preceding word fragment is deleted
6602 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6603 // characters selected - they are deleted
6604 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
6605 ],
6606 cx,
6607 );
6608 view.delete_to_previous_word_boundary(&DeleteToPreviousWordBoundary, cx);
6609 });
6610
6611 assert_eq!(buffer.read(cx).read(cx).text(), "e two te four");
6612
6613 view.update(cx, |view, cx| {
6614 view.select_display_ranges(
6615 &[
6616 // an empty selection - the following word fragment is deleted
6617 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6618 // characters selected - they are deleted
6619 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
6620 ],
6621 cx,
6622 );
6623 view.delete_to_next_word_boundary(&DeleteToNextWordBoundary, cx);
6624 });
6625
6626 assert_eq!(buffer.read(cx).read(cx).text(), "e t te our");
6627 }
6628
6629 #[gpui::test]
6630 fn test_newline(cx: &mut gpui::MutableAppContext) {
6631 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
6632 let settings = EditorSettings::test(&cx);
6633 let (_, view) = cx.add_window(Default::default(), |cx| {
6634 build_editor(buffer.clone(), settings, cx)
6635 });
6636
6637 view.update(cx, |view, cx| {
6638 view.select_display_ranges(
6639 &[
6640 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6641 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6642 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
6643 ],
6644 cx,
6645 );
6646
6647 view.newline(&Newline, cx);
6648 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
6649 });
6650 }
6651
6652 #[gpui::test]
6653 fn test_newline_with_old_selections(cx: &mut gpui::MutableAppContext) {
6654 let buffer = MultiBuffer::build_simple(
6655 "
6656 a
6657 b(
6658 X
6659 )
6660 c(
6661 X
6662 )
6663 "
6664 .unindent()
6665 .as_str(),
6666 cx,
6667 );
6668
6669 let settings = EditorSettings::test(&cx);
6670 let (_, editor) = cx.add_window(Default::default(), |cx| {
6671 let mut editor = build_editor(buffer.clone(), settings, cx);
6672 editor.select_ranges(
6673 [
6674 Point::new(2, 4)..Point::new(2, 5),
6675 Point::new(5, 4)..Point::new(5, 5),
6676 ],
6677 None,
6678 cx,
6679 );
6680 editor
6681 });
6682
6683 // Edit the buffer directly, deleting ranges surrounding the editor's selections
6684 buffer.update(cx, |buffer, cx| {
6685 buffer.edit(
6686 [
6687 Point::new(1, 2)..Point::new(3, 0),
6688 Point::new(4, 2)..Point::new(6, 0),
6689 ],
6690 "",
6691 cx,
6692 );
6693 assert_eq!(
6694 buffer.read(cx).text(),
6695 "
6696 a
6697 b()
6698 c()
6699 "
6700 .unindent()
6701 );
6702 });
6703
6704 editor.update(cx, |editor, cx| {
6705 assert_eq!(
6706 editor.selected_ranges(cx),
6707 &[
6708 Point::new(1, 2)..Point::new(1, 2),
6709 Point::new(2, 2)..Point::new(2, 2),
6710 ],
6711 );
6712
6713 editor.newline(&Newline, cx);
6714 assert_eq!(
6715 editor.text(cx),
6716 "
6717 a
6718 b(
6719 )
6720 c(
6721 )
6722 "
6723 .unindent()
6724 );
6725
6726 // The selections are moved after the inserted newlines
6727 assert_eq!(
6728 editor.selected_ranges(cx),
6729 &[
6730 Point::new(2, 0)..Point::new(2, 0),
6731 Point::new(4, 0)..Point::new(4, 0),
6732 ],
6733 );
6734 });
6735 }
6736
6737 #[gpui::test]
6738 fn test_insert_with_old_selections(cx: &mut gpui::MutableAppContext) {
6739 let buffer = MultiBuffer::build_simple("a( X ), b( Y ), c( Z )", cx);
6740
6741 let settings = EditorSettings::test(&cx);
6742 let (_, editor) = cx.add_window(Default::default(), |cx| {
6743 let mut editor = build_editor(buffer.clone(), settings, cx);
6744 editor.select_ranges([3..4, 11..12, 19..20], None, cx);
6745 editor
6746 });
6747
6748 // Edit the buffer directly, deleting ranges surrounding the editor's selections
6749 buffer.update(cx, |buffer, cx| {
6750 buffer.edit([2..5, 10..13, 18..21], "", cx);
6751 assert_eq!(buffer.read(cx).text(), "a(), b(), c()".unindent());
6752 });
6753
6754 editor.update(cx, |editor, cx| {
6755 assert_eq!(editor.selected_ranges(cx), &[2..2, 7..7, 12..12],);
6756
6757 editor.insert("Z", cx);
6758 assert_eq!(editor.text(cx), "a(Z), b(Z), c(Z)");
6759
6760 // The selections are moved after the inserted characters
6761 assert_eq!(editor.selected_ranges(cx), &[3..3, 9..9, 15..15],);
6762 });
6763 }
6764
6765 #[gpui::test]
6766 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
6767 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
6768 let settings = EditorSettings::test(&cx);
6769 let (_, view) = cx.add_window(Default::default(), |cx| {
6770 build_editor(buffer.clone(), settings, cx)
6771 });
6772
6773 view.update(cx, |view, cx| {
6774 // two selections on the same line
6775 view.select_display_ranges(
6776 &[
6777 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
6778 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
6779 ],
6780 cx,
6781 );
6782
6783 // indent from mid-tabstop to full tabstop
6784 view.tab(&Tab, cx);
6785 assert_eq!(view.text(cx), " one two\nthree\n four");
6786 assert_eq!(
6787 view.selected_display_ranges(cx),
6788 &[
6789 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
6790 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
6791 ]
6792 );
6793
6794 // outdent from 1 tabstop to 0 tabstops
6795 view.outdent(&Outdent, cx);
6796 assert_eq!(view.text(cx), "one two\nthree\n four");
6797 assert_eq!(
6798 view.selected_display_ranges(cx),
6799 &[
6800 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
6801 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
6802 ]
6803 );
6804
6805 // select across line ending
6806 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx);
6807
6808 // indent and outdent affect only the preceding line
6809 view.tab(&Tab, cx);
6810 assert_eq!(view.text(cx), "one two\n three\n four");
6811 assert_eq!(
6812 view.selected_display_ranges(cx),
6813 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
6814 );
6815 view.outdent(&Outdent, cx);
6816 assert_eq!(view.text(cx), "one two\nthree\n four");
6817 assert_eq!(
6818 view.selected_display_ranges(cx),
6819 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
6820 );
6821
6822 // Ensure that indenting/outdenting works when the cursor is at column 0.
6823 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
6824 view.tab(&Tab, cx);
6825 assert_eq!(view.text(cx), "one two\n three\n four");
6826 assert_eq!(
6827 view.selected_display_ranges(cx),
6828 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
6829 );
6830
6831 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
6832 view.outdent(&Outdent, cx);
6833 assert_eq!(view.text(cx), "one two\nthree\n four");
6834 assert_eq!(
6835 view.selected_display_ranges(cx),
6836 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6837 );
6838 });
6839 }
6840
6841 #[gpui::test]
6842 fn test_backspace(cx: &mut gpui::MutableAppContext) {
6843 let buffer =
6844 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
6845 let settings = EditorSettings::test(&cx);
6846 let (_, view) = cx.add_window(Default::default(), |cx| {
6847 build_editor(buffer.clone(), settings, cx)
6848 });
6849
6850 view.update(cx, |view, cx| {
6851 view.select_display_ranges(
6852 &[
6853 // an empty selection - the preceding character is deleted
6854 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6855 // one character selected - it is deleted
6856 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
6857 // a line suffix selected - it is deleted
6858 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
6859 ],
6860 cx,
6861 );
6862 view.backspace(&Backspace, cx);
6863 });
6864
6865 assert_eq!(
6866 buffer.read(cx).read(cx).text(),
6867 "oe two three\nfou five six\nseven ten\n"
6868 );
6869 }
6870
6871 #[gpui::test]
6872 fn test_delete(cx: &mut gpui::MutableAppContext) {
6873 let buffer =
6874 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
6875 let settings = EditorSettings::test(&cx);
6876 let (_, view) = cx.add_window(Default::default(), |cx| {
6877 build_editor(buffer.clone(), settings, cx)
6878 });
6879
6880 view.update(cx, |view, cx| {
6881 view.select_display_ranges(
6882 &[
6883 // an empty selection - the following character is deleted
6884 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6885 // one character selected - it is deleted
6886 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
6887 // a line suffix selected - it is deleted
6888 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
6889 ],
6890 cx,
6891 );
6892 view.delete(&Delete, cx);
6893 });
6894
6895 assert_eq!(
6896 buffer.read(cx).read(cx).text(),
6897 "on two three\nfou five six\nseven ten\n"
6898 );
6899 }
6900
6901 #[gpui::test]
6902 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
6903 let settings = EditorSettings::test(&cx);
6904 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
6905 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6906 view.update(cx, |view, cx| {
6907 view.select_display_ranges(
6908 &[
6909 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6910 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
6911 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6912 ],
6913 cx,
6914 );
6915 view.delete_line(&DeleteLine, cx);
6916 assert_eq!(view.display_text(cx), "ghi");
6917 assert_eq!(
6918 view.selected_display_ranges(cx),
6919 vec![
6920 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6921 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
6922 ]
6923 );
6924 });
6925
6926 let settings = EditorSettings::test(&cx);
6927 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
6928 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6929 view.update(cx, |view, cx| {
6930 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx);
6931 view.delete_line(&DeleteLine, cx);
6932 assert_eq!(view.display_text(cx), "ghi\n");
6933 assert_eq!(
6934 view.selected_display_ranges(cx),
6935 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
6936 );
6937 });
6938 }
6939
6940 #[gpui::test]
6941 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
6942 let settings = EditorSettings::test(&cx);
6943 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
6944 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6945 view.update(cx, |view, cx| {
6946 view.select_display_ranges(
6947 &[
6948 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
6949 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6950 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6951 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6952 ],
6953 cx,
6954 );
6955 view.duplicate_line(&DuplicateLine, cx);
6956 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
6957 assert_eq!(
6958 view.selected_display_ranges(cx),
6959 vec![
6960 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
6961 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6962 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6963 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
6964 ]
6965 );
6966 });
6967
6968 let settings = EditorSettings::test(&cx);
6969 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
6970 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6971 view.update(cx, |view, cx| {
6972 view.select_display_ranges(
6973 &[
6974 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
6975 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
6976 ],
6977 cx,
6978 );
6979 view.duplicate_line(&DuplicateLine, cx);
6980 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
6981 assert_eq!(
6982 view.selected_display_ranges(cx),
6983 vec![
6984 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
6985 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
6986 ]
6987 );
6988 });
6989 }
6990
6991 #[gpui::test]
6992 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
6993 let settings = EditorSettings::test(&cx);
6994 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
6995 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6996 view.update(cx, |view, cx| {
6997 view.fold_ranges(
6998 vec![
6999 Point::new(0, 2)..Point::new(1, 2),
7000 Point::new(2, 3)..Point::new(4, 1),
7001 Point::new(7, 0)..Point::new(8, 4),
7002 ],
7003 cx,
7004 );
7005 view.select_display_ranges(
7006 &[
7007 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7008 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7009 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7010 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
7011 ],
7012 cx,
7013 );
7014 assert_eq!(
7015 view.display_text(cx),
7016 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
7017 );
7018
7019 view.move_line_up(&MoveLineUp, cx);
7020 assert_eq!(
7021 view.display_text(cx),
7022 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
7023 );
7024 assert_eq!(
7025 view.selected_display_ranges(cx),
7026 vec![
7027 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7028 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7029 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
7030 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
7031 ]
7032 );
7033 });
7034
7035 view.update(cx, |view, cx| {
7036 view.move_line_down(&MoveLineDown, cx);
7037 assert_eq!(
7038 view.display_text(cx),
7039 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
7040 );
7041 assert_eq!(
7042 view.selected_display_ranges(cx),
7043 vec![
7044 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7045 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7046 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7047 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
7048 ]
7049 );
7050 });
7051
7052 view.update(cx, |view, cx| {
7053 view.move_line_down(&MoveLineDown, cx);
7054 assert_eq!(
7055 view.display_text(cx),
7056 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
7057 );
7058 assert_eq!(
7059 view.selected_display_ranges(cx),
7060 vec![
7061 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7062 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7063 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7064 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
7065 ]
7066 );
7067 });
7068
7069 view.update(cx, |view, cx| {
7070 view.move_line_up(&MoveLineUp, cx);
7071 assert_eq!(
7072 view.display_text(cx),
7073 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
7074 );
7075 assert_eq!(
7076 view.selected_display_ranges(cx),
7077 vec![
7078 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7079 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7080 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
7081 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
7082 ]
7083 );
7084 });
7085 }
7086
7087 #[gpui::test]
7088 fn test_move_line_up_down_with_blocks(cx: &mut gpui::MutableAppContext) {
7089 let settings = EditorSettings::test(&cx);
7090 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
7091 let snapshot = buffer.read(cx).snapshot(cx);
7092 let (_, editor) =
7093 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7094 editor.update(cx, |editor, cx| {
7095 editor.insert_blocks(
7096 [BlockProperties {
7097 position: snapshot.anchor_after(Point::new(2, 0)),
7098 disposition: BlockDisposition::Below,
7099 height: 1,
7100 render: Arc::new(|_| Empty::new().boxed()),
7101 }],
7102 cx,
7103 );
7104 editor.select_ranges([Point::new(2, 0)..Point::new(2, 0)], None, cx);
7105 editor.move_line_down(&MoveLineDown, cx);
7106 });
7107 }
7108
7109 #[gpui::test]
7110 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
7111 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
7112 let settings = EditorSettings::test(&cx);
7113 let view = cx
7114 .add_window(Default::default(), |cx| {
7115 build_editor(buffer.clone(), settings, cx)
7116 })
7117 .1;
7118
7119 // Cut with three selections. Clipboard text is divided into three slices.
7120 view.update(cx, |view, cx| {
7121 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
7122 view.cut(&Cut, cx);
7123 assert_eq!(view.display_text(cx), "two four six ");
7124 });
7125
7126 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
7127 view.update(cx, |view, cx| {
7128 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
7129 view.paste(&Paste, cx);
7130 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
7131 assert_eq!(
7132 view.selected_display_ranges(cx),
7133 &[
7134 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
7135 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
7136 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
7137 ]
7138 );
7139 });
7140
7141 // Paste again but with only two cursors. Since the number of cursors doesn't
7142 // match the number of slices in the clipboard, the entire clipboard text
7143 // is pasted at each cursor.
7144 view.update(cx, |view, cx| {
7145 view.select_ranges(vec![0..0, 31..31], None, cx);
7146 view.handle_input(&Input("( ".into()), cx);
7147 view.paste(&Paste, cx);
7148 view.handle_input(&Input(") ".into()), cx);
7149 assert_eq!(
7150 view.display_text(cx),
7151 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7152 );
7153 });
7154
7155 view.update(cx, |view, cx| {
7156 view.select_ranges(vec![0..0], None, cx);
7157 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
7158 assert_eq!(
7159 view.display_text(cx),
7160 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7161 );
7162 });
7163
7164 // Cut with three selections, one of which is full-line.
7165 view.update(cx, |view, cx| {
7166 view.select_display_ranges(
7167 &[
7168 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
7169 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7170 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
7171 ],
7172 cx,
7173 );
7174 view.cut(&Cut, cx);
7175 assert_eq!(
7176 view.display_text(cx),
7177 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7178 );
7179 });
7180
7181 // Paste with three selections, noticing how the copied selection that was full-line
7182 // gets inserted before the second cursor.
7183 view.update(cx, |view, cx| {
7184 view.select_display_ranges(
7185 &[
7186 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7187 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7188 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
7189 ],
7190 cx,
7191 );
7192 view.paste(&Paste, cx);
7193 assert_eq!(
7194 view.display_text(cx),
7195 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
7196 );
7197 assert_eq!(
7198 view.selected_display_ranges(cx),
7199 &[
7200 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7201 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7202 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
7203 ]
7204 );
7205 });
7206
7207 // Copy with a single cursor only, which writes the whole line into the clipboard.
7208 view.update(cx, |view, cx| {
7209 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx);
7210 view.copy(&Copy, cx);
7211 });
7212
7213 // Paste with three selections, noticing how the copied full-line selection is inserted
7214 // before the empty selections but replaces the selection that is non-empty.
7215 view.update(cx, |view, cx| {
7216 view.select_display_ranges(
7217 &[
7218 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7219 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
7220 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7221 ],
7222 cx,
7223 );
7224 view.paste(&Paste, cx);
7225 assert_eq!(
7226 view.display_text(cx),
7227 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
7228 );
7229 assert_eq!(
7230 view.selected_display_ranges(cx),
7231 &[
7232 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7233 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7234 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
7235 ]
7236 );
7237 });
7238 }
7239
7240 #[gpui::test]
7241 fn test_select_all(cx: &mut gpui::MutableAppContext) {
7242 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
7243 let settings = EditorSettings::test(&cx);
7244 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7245 view.update(cx, |view, cx| {
7246 view.select_all(&SelectAll, cx);
7247 assert_eq!(
7248 view.selected_display_ranges(cx),
7249 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
7250 );
7251 });
7252 }
7253
7254 #[gpui::test]
7255 fn test_select_line(cx: &mut gpui::MutableAppContext) {
7256 let settings = EditorSettings::test(&cx);
7257 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
7258 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7259 view.update(cx, |view, cx| {
7260 view.select_display_ranges(
7261 &[
7262 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7263 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7264 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7265 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
7266 ],
7267 cx,
7268 );
7269 view.select_line(&SelectLine, cx);
7270 assert_eq!(
7271 view.selected_display_ranges(cx),
7272 vec![
7273 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
7274 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
7275 ]
7276 );
7277 });
7278
7279 view.update(cx, |view, cx| {
7280 view.select_line(&SelectLine, cx);
7281 assert_eq!(
7282 view.selected_display_ranges(cx),
7283 vec![
7284 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
7285 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
7286 ]
7287 );
7288 });
7289
7290 view.update(cx, |view, cx| {
7291 view.select_line(&SelectLine, cx);
7292 assert_eq!(
7293 view.selected_display_ranges(cx),
7294 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
7295 );
7296 });
7297 }
7298
7299 #[gpui::test]
7300 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
7301 let settings = EditorSettings::test(&cx);
7302 let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
7303 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7304 view.update(cx, |view, cx| {
7305 view.fold_ranges(
7306 vec![
7307 Point::new(0, 2)..Point::new(1, 2),
7308 Point::new(2, 3)..Point::new(4, 1),
7309 Point::new(7, 0)..Point::new(8, 4),
7310 ],
7311 cx,
7312 );
7313 view.select_display_ranges(
7314 &[
7315 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7316 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7317 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7318 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
7319 ],
7320 cx,
7321 );
7322 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
7323 });
7324
7325 view.update(cx, |view, cx| {
7326 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
7327 assert_eq!(
7328 view.display_text(cx),
7329 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
7330 );
7331 assert_eq!(
7332 view.selected_display_ranges(cx),
7333 [
7334 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7335 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7336 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
7337 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
7338 ]
7339 );
7340 });
7341
7342 view.update(cx, |view, cx| {
7343 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx);
7344 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
7345 assert_eq!(
7346 view.display_text(cx),
7347 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
7348 );
7349 assert_eq!(
7350 view.selected_display_ranges(cx),
7351 [
7352 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
7353 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
7354 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7355 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
7356 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
7357 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
7358 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
7359 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
7360 ]
7361 );
7362 });
7363 }
7364
7365 #[gpui::test]
7366 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
7367 let settings = EditorSettings::test(&cx);
7368 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
7369 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7370
7371 view.update(cx, |view, cx| {
7372 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx);
7373 });
7374 view.update(cx, |view, cx| {
7375 view.add_selection_above(&AddSelectionAbove, cx);
7376 assert_eq!(
7377 view.selected_display_ranges(cx),
7378 vec![
7379 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7380 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
7381 ]
7382 );
7383 });
7384
7385 view.update(cx, |view, cx| {
7386 view.add_selection_above(&AddSelectionAbove, cx);
7387 assert_eq!(
7388 view.selected_display_ranges(cx),
7389 vec![
7390 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7391 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
7392 ]
7393 );
7394 });
7395
7396 view.update(cx, |view, cx| {
7397 view.add_selection_below(&AddSelectionBelow, cx);
7398 assert_eq!(
7399 view.selected_display_ranges(cx),
7400 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
7401 );
7402 });
7403
7404 view.update(cx, |view, cx| {
7405 view.add_selection_below(&AddSelectionBelow, cx);
7406 assert_eq!(
7407 view.selected_display_ranges(cx),
7408 vec![
7409 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7410 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
7411 ]
7412 );
7413 });
7414
7415 view.update(cx, |view, cx| {
7416 view.add_selection_below(&AddSelectionBelow, cx);
7417 assert_eq!(
7418 view.selected_display_ranges(cx),
7419 vec![
7420 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7421 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
7422 ]
7423 );
7424 });
7425
7426 view.update(cx, |view, cx| {
7427 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx);
7428 });
7429 view.update(cx, |view, cx| {
7430 view.add_selection_below(&AddSelectionBelow, cx);
7431 assert_eq!(
7432 view.selected_display_ranges(cx),
7433 vec![
7434 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7435 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
7436 ]
7437 );
7438 });
7439
7440 view.update(cx, |view, cx| {
7441 view.add_selection_below(&AddSelectionBelow, cx);
7442 assert_eq!(
7443 view.selected_display_ranges(cx),
7444 vec![
7445 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7446 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
7447 ]
7448 );
7449 });
7450
7451 view.update(cx, |view, cx| {
7452 view.add_selection_above(&AddSelectionAbove, cx);
7453 assert_eq!(
7454 view.selected_display_ranges(cx),
7455 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
7456 );
7457 });
7458
7459 view.update(cx, |view, cx| {
7460 view.add_selection_above(&AddSelectionAbove, cx);
7461 assert_eq!(
7462 view.selected_display_ranges(cx),
7463 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
7464 );
7465 });
7466
7467 view.update(cx, |view, cx| {
7468 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx);
7469 view.add_selection_below(&AddSelectionBelow, cx);
7470 assert_eq!(
7471 view.selected_display_ranges(cx),
7472 vec![
7473 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7474 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7475 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7476 ]
7477 );
7478 });
7479
7480 view.update(cx, |view, cx| {
7481 view.add_selection_below(&AddSelectionBelow, cx);
7482 assert_eq!(
7483 view.selected_display_ranges(cx),
7484 vec![
7485 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7486 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7487 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7488 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
7489 ]
7490 );
7491 });
7492
7493 view.update(cx, |view, cx| {
7494 view.add_selection_above(&AddSelectionAbove, cx);
7495 assert_eq!(
7496 view.selected_display_ranges(cx),
7497 vec![
7498 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7499 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7500 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7501 ]
7502 );
7503 });
7504
7505 view.update(cx, |view, cx| {
7506 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx);
7507 });
7508 view.update(cx, |view, cx| {
7509 view.add_selection_above(&AddSelectionAbove, cx);
7510 assert_eq!(
7511 view.selected_display_ranges(cx),
7512 vec![
7513 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
7514 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
7515 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
7516 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
7517 ]
7518 );
7519 });
7520
7521 view.update(cx, |view, cx| {
7522 view.add_selection_below(&AddSelectionBelow, cx);
7523 assert_eq!(
7524 view.selected_display_ranges(cx),
7525 vec![
7526 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
7527 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
7528 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
7529 ]
7530 );
7531 });
7532 }
7533
7534 #[gpui::test]
7535 async fn test_select_larger_smaller_syntax_node(mut cx: gpui::TestAppContext) {
7536 let settings = cx.read(EditorSettings::test);
7537 let language = Arc::new(Language::new(
7538 LanguageConfig::default(),
7539 Some(tree_sitter_rust::language()),
7540 ));
7541
7542 let text = r#"
7543 use mod1::mod2::{mod3, mod4};
7544
7545 fn fn_1(param1: bool, param2: &str) {
7546 let var1 = "text";
7547 }
7548 "#
7549 .unindent();
7550
7551 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7552 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7553 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7554 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
7555 .await;
7556
7557 view.update(&mut cx, |view, cx| {
7558 view.select_display_ranges(
7559 &[
7560 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7561 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7562 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7563 ],
7564 cx,
7565 );
7566 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7567 });
7568 assert_eq!(
7569 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7570 &[
7571 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
7572 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7573 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
7574 ]
7575 );
7576
7577 view.update(&mut cx, |view, cx| {
7578 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7579 });
7580 assert_eq!(
7581 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7582 &[
7583 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
7584 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
7585 ]
7586 );
7587
7588 view.update(&mut cx, |view, cx| {
7589 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7590 });
7591 assert_eq!(
7592 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7593 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
7594 );
7595
7596 // Trying to expand the selected syntax node one more time has no effect.
7597 view.update(&mut cx, |view, cx| {
7598 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7599 });
7600 assert_eq!(
7601 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7602 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
7603 );
7604
7605 view.update(&mut cx, |view, cx| {
7606 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7607 });
7608 assert_eq!(
7609 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7610 &[
7611 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
7612 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
7613 ]
7614 );
7615
7616 view.update(&mut cx, |view, cx| {
7617 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7618 });
7619 assert_eq!(
7620 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7621 &[
7622 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
7623 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7624 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
7625 ]
7626 );
7627
7628 view.update(&mut cx, |view, cx| {
7629 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7630 });
7631 assert_eq!(
7632 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7633 &[
7634 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7635 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7636 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7637 ]
7638 );
7639
7640 // Trying to shrink the selected syntax node one more time has no effect.
7641 view.update(&mut cx, |view, cx| {
7642 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7643 });
7644 assert_eq!(
7645 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7646 &[
7647 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7648 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7649 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7650 ]
7651 );
7652
7653 // Ensure that we keep expanding the selection if the larger selection starts or ends within
7654 // a fold.
7655 view.update(&mut cx, |view, cx| {
7656 view.fold_ranges(
7657 vec![
7658 Point::new(0, 21)..Point::new(0, 24),
7659 Point::new(3, 20)..Point::new(3, 22),
7660 ],
7661 cx,
7662 );
7663 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7664 });
7665 assert_eq!(
7666 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7667 &[
7668 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
7669 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7670 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
7671 ]
7672 );
7673 }
7674
7675 #[gpui::test]
7676 async fn test_autoindent_selections(mut cx: gpui::TestAppContext) {
7677 let settings = cx.read(EditorSettings::test);
7678 let language = Arc::new(
7679 Language::new(
7680 LanguageConfig {
7681 brackets: vec![
7682 BracketPair {
7683 start: "{".to_string(),
7684 end: "}".to_string(),
7685 close: false,
7686 newline: true,
7687 },
7688 BracketPair {
7689 start: "(".to_string(),
7690 end: ")".to_string(),
7691 close: false,
7692 newline: true,
7693 },
7694 ],
7695 ..Default::default()
7696 },
7697 Some(tree_sitter_rust::language()),
7698 )
7699 .with_indents_query(
7700 r#"
7701 (_ "(" ")" @end) @indent
7702 (_ "{" "}" @end) @indent
7703 "#,
7704 )
7705 .unwrap(),
7706 );
7707
7708 let text = "fn a() {}";
7709
7710 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7711 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7712 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7713 editor
7714 .condition(&cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
7715 .await;
7716
7717 editor.update(&mut cx, |editor, cx| {
7718 editor.select_ranges([5..5, 8..8, 9..9], None, cx);
7719 editor.newline(&Newline, cx);
7720 assert_eq!(editor.text(cx), "fn a(\n \n) {\n \n}\n");
7721 assert_eq!(
7722 editor.selected_ranges(cx),
7723 &[
7724 Point::new(1, 4)..Point::new(1, 4),
7725 Point::new(3, 4)..Point::new(3, 4),
7726 Point::new(5, 0)..Point::new(5, 0)
7727 ]
7728 );
7729 });
7730 }
7731
7732 #[gpui::test]
7733 async fn test_autoclose_pairs(mut cx: gpui::TestAppContext) {
7734 let settings = cx.read(EditorSettings::test);
7735 let language = Arc::new(Language::new(
7736 LanguageConfig {
7737 brackets: vec![
7738 BracketPair {
7739 start: "{".to_string(),
7740 end: "}".to_string(),
7741 close: true,
7742 newline: true,
7743 },
7744 BracketPair {
7745 start: "/*".to_string(),
7746 end: " */".to_string(),
7747 close: true,
7748 newline: true,
7749 },
7750 ],
7751 ..Default::default()
7752 },
7753 Some(tree_sitter_rust::language()),
7754 ));
7755
7756 let text = r#"
7757 a
7758
7759 /
7760
7761 "#
7762 .unindent();
7763
7764 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7765 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7766 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7767 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
7768 .await;
7769
7770 view.update(&mut cx, |view, cx| {
7771 view.select_display_ranges(
7772 &[
7773 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7774 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7775 ],
7776 cx,
7777 );
7778 view.handle_input(&Input("{".to_string()), cx);
7779 view.handle_input(&Input("{".to_string()), cx);
7780 view.handle_input(&Input("{".to_string()), cx);
7781 assert_eq!(
7782 view.text(cx),
7783 "
7784 {{{}}}
7785 {{{}}}
7786 /
7787
7788 "
7789 .unindent()
7790 );
7791
7792 view.move_right(&MoveRight, cx);
7793 view.handle_input(&Input("}".to_string()), cx);
7794 view.handle_input(&Input("}".to_string()), cx);
7795 view.handle_input(&Input("}".to_string()), cx);
7796 assert_eq!(
7797 view.text(cx),
7798 "
7799 {{{}}}}
7800 {{{}}}}
7801 /
7802
7803 "
7804 .unindent()
7805 );
7806
7807 view.undo(&Undo, cx);
7808 view.handle_input(&Input("/".to_string()), cx);
7809 view.handle_input(&Input("*".to_string()), cx);
7810 assert_eq!(
7811 view.text(cx),
7812 "
7813 /* */
7814 /* */
7815 /
7816
7817 "
7818 .unindent()
7819 );
7820
7821 view.undo(&Undo, cx);
7822 view.select_display_ranges(
7823 &[
7824 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7825 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7826 ],
7827 cx,
7828 );
7829 view.handle_input(&Input("*".to_string()), cx);
7830 assert_eq!(
7831 view.text(cx),
7832 "
7833 a
7834
7835 /*
7836 *
7837 "
7838 .unindent()
7839 );
7840 });
7841 }
7842
7843 #[gpui::test]
7844 async fn test_snippets(mut cx: gpui::TestAppContext) {
7845 let settings = cx.read(EditorSettings::test);
7846
7847 let text = "
7848 a. b
7849 a. b
7850 a. b
7851 "
7852 .unindent();
7853 let buffer = cx.update(|cx| MultiBuffer::build_simple(&text, cx));
7854 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7855
7856 editor.update(&mut cx, |editor, cx| {
7857 let buffer = &editor.snapshot(cx).buffer_snapshot;
7858 let snippet = Snippet::parse("f(${1:one}, ${2:two}, ${1:three})$0").unwrap();
7859 let insertion_ranges = [
7860 Point::new(0, 2).to_offset(buffer)..Point::new(0, 2).to_offset(buffer),
7861 Point::new(1, 2).to_offset(buffer)..Point::new(1, 2).to_offset(buffer),
7862 Point::new(2, 2).to_offset(buffer)..Point::new(2, 2).to_offset(buffer),
7863 ];
7864
7865 editor
7866 .insert_snippet(&insertion_ranges, snippet, cx)
7867 .unwrap();
7868 assert_eq!(
7869 editor.text(cx),
7870 "
7871 a.f(one, two, three) b
7872 a.f(one, two, three) b
7873 a.f(one, two, three) b
7874 "
7875 .unindent()
7876 );
7877 assert_eq!(
7878 editor.selected_ranges::<Point>(cx),
7879 &[
7880 Point::new(0, 4)..Point::new(0, 7),
7881 Point::new(0, 14)..Point::new(0, 19),
7882 Point::new(1, 4)..Point::new(1, 7),
7883 Point::new(1, 14)..Point::new(1, 19),
7884 Point::new(2, 4)..Point::new(2, 7),
7885 Point::new(2, 14)..Point::new(2, 19),
7886 ]
7887 );
7888
7889 // Can't move earlier than the first tab stop
7890 editor.move_to_prev_snippet_tabstop(cx);
7891 assert_eq!(
7892 editor.selected_ranges::<Point>(cx),
7893 &[
7894 Point::new(0, 4)..Point::new(0, 7),
7895 Point::new(0, 14)..Point::new(0, 19),
7896 Point::new(1, 4)..Point::new(1, 7),
7897 Point::new(1, 14)..Point::new(1, 19),
7898 Point::new(2, 4)..Point::new(2, 7),
7899 Point::new(2, 14)..Point::new(2, 19),
7900 ]
7901 );
7902
7903 assert!(editor.move_to_next_snippet_tabstop(cx));
7904 assert_eq!(
7905 editor.selected_ranges::<Point>(cx),
7906 &[
7907 Point::new(0, 9)..Point::new(0, 12),
7908 Point::new(1, 9)..Point::new(1, 12),
7909 Point::new(2, 9)..Point::new(2, 12)
7910 ]
7911 );
7912
7913 editor.move_to_prev_snippet_tabstop(cx);
7914 assert_eq!(
7915 editor.selected_ranges::<Point>(cx),
7916 &[
7917 Point::new(0, 4)..Point::new(0, 7),
7918 Point::new(0, 14)..Point::new(0, 19),
7919 Point::new(1, 4)..Point::new(1, 7),
7920 Point::new(1, 14)..Point::new(1, 19),
7921 Point::new(2, 4)..Point::new(2, 7),
7922 Point::new(2, 14)..Point::new(2, 19),
7923 ]
7924 );
7925
7926 assert!(editor.move_to_next_snippet_tabstop(cx));
7927 assert!(editor.move_to_next_snippet_tabstop(cx));
7928 assert_eq!(
7929 editor.selected_ranges::<Point>(cx),
7930 &[
7931 Point::new(0, 20)..Point::new(0, 20),
7932 Point::new(1, 20)..Point::new(1, 20),
7933 Point::new(2, 20)..Point::new(2, 20)
7934 ]
7935 );
7936
7937 // As soon as the last tab stop is reached, snippet state is gone
7938 editor.move_to_prev_snippet_tabstop(cx);
7939 assert_eq!(
7940 editor.selected_ranges::<Point>(cx),
7941 &[
7942 Point::new(0, 20)..Point::new(0, 20),
7943 Point::new(1, 20)..Point::new(1, 20),
7944 Point::new(2, 20)..Point::new(2, 20)
7945 ]
7946 );
7947 });
7948 }
7949
7950 #[gpui::test]
7951 async fn test_completion(mut cx: gpui::TestAppContext) {
7952 let settings = cx.read(EditorSettings::test);
7953 let (language_server, mut fake) = lsp::LanguageServer::fake_with_capabilities(
7954 lsp::ServerCapabilities {
7955 completion_provider: Some(lsp::CompletionOptions {
7956 trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
7957 ..Default::default()
7958 }),
7959 ..Default::default()
7960 },
7961 cx.background(),
7962 );
7963
7964 let text = "
7965 one
7966 two
7967 three
7968 "
7969 .unindent();
7970
7971 let fs = FakeFs::new(cx.background().clone());
7972 fs.insert_file("/file", text).await;
7973
7974 let project = Project::test(fs, &mut cx);
7975
7976 let (worktree, relative_path) = project
7977 .update(&mut cx, |project, cx| {
7978 project.find_or_create_local_worktree("/file", false, cx)
7979 })
7980 .await
7981 .unwrap();
7982 let project_path = ProjectPath {
7983 worktree_id: worktree.read_with(&cx, |worktree, _| worktree.id()),
7984 path: relative_path.into(),
7985 };
7986 let buffer = project
7987 .update(&mut cx, |project, cx| project.open_buffer(project_path, cx))
7988 .await
7989 .unwrap();
7990 buffer.update(&mut cx, |buffer, cx| {
7991 buffer.set_language_server(Some(language_server), cx);
7992 });
7993
7994 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7995 buffer.next_notification(&cx).await;
7996
7997 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7998
7999 editor.update(&mut cx, |editor, cx| {
8000 editor.project = Some(project);
8001 editor.select_ranges([Point::new(0, 3)..Point::new(0, 3)], None, cx);
8002 editor.handle_input(&Input(".".to_string()), cx);
8003 });
8004
8005 handle_completion_request(
8006 &mut fake,
8007 "/file",
8008 Point::new(0, 4),
8009 vec![
8010 (Point::new(0, 4)..Point::new(0, 4), "first_completion"),
8011 (Point::new(0, 4)..Point::new(0, 4), "second_completion"),
8012 ],
8013 )
8014 .await;
8015 editor
8016 .condition(&cx, |editor, _| editor.context_menu_visible())
8017 .await;
8018
8019 let apply_additional_edits = editor.update(&mut cx, |editor, cx| {
8020 editor.move_down(&MoveDown, cx);
8021 let apply_additional_edits = editor
8022 .confirm_completion(&ConfirmCompletion(None), cx)
8023 .unwrap();
8024 assert_eq!(
8025 editor.text(cx),
8026 "
8027 one.second_completion
8028 two
8029 three
8030 "
8031 .unindent()
8032 );
8033 apply_additional_edits
8034 });
8035
8036 handle_resolve_completion_request(
8037 &mut fake,
8038 Some((Point::new(2, 5)..Point::new(2, 5), "\nadditional edit")),
8039 )
8040 .await;
8041 apply_additional_edits.await.unwrap();
8042 assert_eq!(
8043 editor.read_with(&cx, |editor, cx| editor.text(cx)),
8044 "
8045 one.second_completion
8046 two
8047 three
8048 additional edit
8049 "
8050 .unindent()
8051 );
8052
8053 editor.update(&mut cx, |editor, cx| {
8054 editor.select_ranges(
8055 [
8056 Point::new(1, 3)..Point::new(1, 3),
8057 Point::new(2, 5)..Point::new(2, 5),
8058 ],
8059 None,
8060 cx,
8061 );
8062
8063 editor.handle_input(&Input(" ".to_string()), cx);
8064 assert!(editor.context_menu.is_none());
8065 editor.handle_input(&Input("s".to_string()), cx);
8066 assert!(editor.context_menu.is_none());
8067 });
8068
8069 handle_completion_request(
8070 &mut fake,
8071 "/file",
8072 Point::new(2, 7),
8073 vec![
8074 (Point::new(2, 6)..Point::new(2, 7), "fourth_completion"),
8075 (Point::new(2, 6)..Point::new(2, 7), "fifth_completion"),
8076 (Point::new(2, 6)..Point::new(2, 7), "sixth_completion"),
8077 ],
8078 )
8079 .await;
8080 editor
8081 .condition(&cx, |editor, _| editor.context_menu_visible())
8082 .await;
8083
8084 editor.update(&mut cx, |editor, cx| {
8085 editor.handle_input(&Input("i".to_string()), cx);
8086 });
8087
8088 handle_completion_request(
8089 &mut fake,
8090 "/file",
8091 Point::new(2, 8),
8092 vec![
8093 (Point::new(2, 6)..Point::new(2, 8), "fourth_completion"),
8094 (Point::new(2, 6)..Point::new(2, 8), "fifth_completion"),
8095 (Point::new(2, 6)..Point::new(2, 8), "sixth_completion"),
8096 ],
8097 )
8098 .await;
8099 editor
8100 .condition(&cx, |editor, _| editor.context_menu_visible())
8101 .await;
8102
8103 let apply_additional_edits = editor.update(&mut cx, |editor, cx| {
8104 let apply_additional_edits = editor
8105 .confirm_completion(&ConfirmCompletion(None), cx)
8106 .unwrap();
8107 assert_eq!(
8108 editor.text(cx),
8109 "
8110 one.second_completion
8111 two sixth_completion
8112 three sixth_completion
8113 additional edit
8114 "
8115 .unindent()
8116 );
8117 apply_additional_edits
8118 });
8119 handle_resolve_completion_request(&mut fake, None).await;
8120 apply_additional_edits.await.unwrap();
8121
8122 async fn handle_completion_request(
8123 fake: &mut FakeLanguageServer,
8124 path: &'static str,
8125 position: Point,
8126 completions: Vec<(Range<Point>, &'static str)>,
8127 ) {
8128 fake.handle_request::<lsp::request::Completion, _>(move |params| {
8129 assert_eq!(
8130 params.text_document_position.text_document.uri,
8131 lsp::Url::from_file_path(path).unwrap()
8132 );
8133 assert_eq!(
8134 params.text_document_position.position,
8135 lsp::Position::new(position.row, position.column)
8136 );
8137 Some(lsp::CompletionResponse::Array(
8138 completions
8139 .iter()
8140 .map(|(range, new_text)| lsp::CompletionItem {
8141 label: new_text.to_string(),
8142 text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
8143 range: lsp::Range::new(
8144 lsp::Position::new(range.start.row, range.start.column),
8145 lsp::Position::new(range.start.row, range.start.column),
8146 ),
8147 new_text: new_text.to_string(),
8148 })),
8149 ..Default::default()
8150 })
8151 .collect(),
8152 ))
8153 })
8154 .next()
8155 .await;
8156 }
8157
8158 async fn handle_resolve_completion_request(
8159 fake: &mut FakeLanguageServer,
8160 edit: Option<(Range<Point>, &'static str)>,
8161 ) {
8162 fake.handle_request::<lsp::request::ResolveCompletionItem, _>(move |_| {
8163 lsp::CompletionItem {
8164 additional_text_edits: edit.clone().map(|(range, new_text)| {
8165 vec![lsp::TextEdit::new(
8166 lsp::Range::new(
8167 lsp::Position::new(range.start.row, range.start.column),
8168 lsp::Position::new(range.end.row, range.end.column),
8169 ),
8170 new_text.to_string(),
8171 )]
8172 }),
8173 ..Default::default()
8174 }
8175 })
8176 .next()
8177 .await;
8178 }
8179 }
8180
8181 #[gpui::test]
8182 async fn test_toggle_comment(mut cx: gpui::TestAppContext) {
8183 let settings = cx.read(EditorSettings::test);
8184 let language = Arc::new(Language::new(
8185 LanguageConfig {
8186 line_comment: Some("// ".to_string()),
8187 ..Default::default()
8188 },
8189 Some(tree_sitter_rust::language()),
8190 ));
8191
8192 let text = "
8193 fn a() {
8194 //b();
8195 // c();
8196 // d();
8197 }
8198 "
8199 .unindent();
8200
8201 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8202 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8203 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8204
8205 view.update(&mut cx, |editor, cx| {
8206 // If multiple selections intersect a line, the line is only
8207 // toggled once.
8208 editor.select_display_ranges(
8209 &[
8210 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
8211 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
8212 ],
8213 cx,
8214 );
8215 editor.toggle_comments(&ToggleComments, cx);
8216 assert_eq!(
8217 editor.text(cx),
8218 "
8219 fn a() {
8220 b();
8221 c();
8222 d();
8223 }
8224 "
8225 .unindent()
8226 );
8227
8228 // The comment prefix is inserted at the same column for every line
8229 // in a selection.
8230 editor.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx);
8231 editor.toggle_comments(&ToggleComments, cx);
8232 assert_eq!(
8233 editor.text(cx),
8234 "
8235 fn a() {
8236 // b();
8237 // c();
8238 // d();
8239 }
8240 "
8241 .unindent()
8242 );
8243
8244 // If a selection ends at the beginning of a line, that line is not toggled.
8245 editor.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx);
8246 editor.toggle_comments(&ToggleComments, cx);
8247 assert_eq!(
8248 editor.text(cx),
8249 "
8250 fn a() {
8251 // b();
8252 c();
8253 // d();
8254 }
8255 "
8256 .unindent()
8257 );
8258 });
8259 }
8260
8261 #[gpui::test]
8262 fn test_editing_disjoint_excerpts(cx: &mut gpui::MutableAppContext) {
8263 let settings = EditorSettings::test(cx);
8264 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8265 let multibuffer = cx.add_model(|cx| {
8266 let mut multibuffer = MultiBuffer::new(0);
8267 multibuffer.push_excerpts(
8268 buffer.clone(),
8269 [
8270 Point::new(0, 0)..Point::new(0, 4),
8271 Point::new(1, 0)..Point::new(1, 4),
8272 ],
8273 cx,
8274 );
8275 multibuffer
8276 });
8277
8278 assert_eq!(multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb");
8279
8280 let (_, view) = cx.add_window(Default::default(), |cx| {
8281 build_editor(multibuffer, settings, cx)
8282 });
8283 view.update(cx, |view, cx| {
8284 assert_eq!(view.text(cx), "aaaa\nbbbb");
8285 view.select_ranges(
8286 [
8287 Point::new(0, 0)..Point::new(0, 0),
8288 Point::new(1, 0)..Point::new(1, 0),
8289 ],
8290 None,
8291 cx,
8292 );
8293
8294 view.handle_input(&Input("X".to_string()), cx);
8295 assert_eq!(view.text(cx), "Xaaaa\nXbbbb");
8296 assert_eq!(
8297 view.selected_ranges(cx),
8298 [
8299 Point::new(0, 1)..Point::new(0, 1),
8300 Point::new(1, 1)..Point::new(1, 1),
8301 ]
8302 )
8303 });
8304 }
8305
8306 #[gpui::test]
8307 fn test_editing_overlapping_excerpts(cx: &mut gpui::MutableAppContext) {
8308 let settings = EditorSettings::test(cx);
8309 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8310 let multibuffer = cx.add_model(|cx| {
8311 let mut multibuffer = MultiBuffer::new(0);
8312 multibuffer.push_excerpts(
8313 buffer,
8314 [
8315 Point::new(0, 0)..Point::new(1, 4),
8316 Point::new(1, 0)..Point::new(2, 4),
8317 ],
8318 cx,
8319 );
8320 multibuffer
8321 });
8322
8323 assert_eq!(
8324 multibuffer.read(cx).read(cx).text(),
8325 "aaaa\nbbbb\nbbbb\ncccc"
8326 );
8327
8328 let (_, view) = cx.add_window(Default::default(), |cx| {
8329 build_editor(multibuffer, settings, cx)
8330 });
8331 view.update(cx, |view, cx| {
8332 view.select_ranges(
8333 [
8334 Point::new(1, 1)..Point::new(1, 1),
8335 Point::new(2, 3)..Point::new(2, 3),
8336 ],
8337 None,
8338 cx,
8339 );
8340
8341 view.handle_input(&Input("X".to_string()), cx);
8342 assert_eq!(view.text(cx), "aaaa\nbXbbXb\nbXbbXb\ncccc");
8343 assert_eq!(
8344 view.selected_ranges(cx),
8345 [
8346 Point::new(1, 2)..Point::new(1, 2),
8347 Point::new(2, 5)..Point::new(2, 5),
8348 ]
8349 );
8350
8351 view.newline(&Newline, cx);
8352 assert_eq!(view.text(cx), "aaaa\nbX\nbbX\nb\nbX\nbbX\nb\ncccc");
8353 assert_eq!(
8354 view.selected_ranges(cx),
8355 [
8356 Point::new(2, 0)..Point::new(2, 0),
8357 Point::new(6, 0)..Point::new(6, 0),
8358 ]
8359 );
8360 });
8361 }
8362
8363 #[gpui::test]
8364 fn test_refresh_selections(cx: &mut gpui::MutableAppContext) {
8365 let settings = EditorSettings::test(cx);
8366 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8367 let mut excerpt1_id = None;
8368 let multibuffer = cx.add_model(|cx| {
8369 let mut multibuffer = MultiBuffer::new(0);
8370 excerpt1_id = multibuffer
8371 .push_excerpts(
8372 buffer.clone(),
8373 [
8374 Point::new(0, 0)..Point::new(1, 4),
8375 Point::new(1, 0)..Point::new(2, 4),
8376 ],
8377 cx,
8378 )
8379 .into_iter()
8380 .next();
8381 multibuffer
8382 });
8383 assert_eq!(
8384 multibuffer.read(cx).read(cx).text(),
8385 "aaaa\nbbbb\nbbbb\ncccc"
8386 );
8387 let (_, editor) = cx.add_window(Default::default(), |cx| {
8388 let mut editor = build_editor(multibuffer.clone(), settings, cx);
8389 editor.select_ranges(
8390 [
8391 Point::new(1, 3)..Point::new(1, 3),
8392 Point::new(2, 1)..Point::new(2, 1),
8393 ],
8394 None,
8395 cx,
8396 );
8397 editor
8398 });
8399
8400 // Refreshing selections is a no-op when excerpts haven't changed.
8401 editor.update(cx, |editor, cx| {
8402 editor.refresh_selections(cx);
8403 assert_eq!(
8404 editor.selected_ranges(cx),
8405 [
8406 Point::new(1, 3)..Point::new(1, 3),
8407 Point::new(2, 1)..Point::new(2, 1),
8408 ]
8409 );
8410 });
8411
8412 multibuffer.update(cx, |multibuffer, cx| {
8413 multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx);
8414 });
8415 editor.update(cx, |editor, cx| {
8416 // Removing an excerpt causes the first selection to become degenerate.
8417 assert_eq!(
8418 editor.selected_ranges(cx),
8419 [
8420 Point::new(0, 0)..Point::new(0, 0),
8421 Point::new(0, 1)..Point::new(0, 1)
8422 ]
8423 );
8424
8425 // Refreshing selections will relocate the first selection to the original buffer
8426 // location.
8427 editor.refresh_selections(cx);
8428 assert_eq!(
8429 editor.selected_ranges(cx),
8430 [
8431 Point::new(0, 1)..Point::new(0, 1),
8432 Point::new(0, 3)..Point::new(0, 3)
8433 ]
8434 );
8435 });
8436 }
8437
8438 #[gpui::test]
8439 async fn test_extra_newline_insertion(mut cx: gpui::TestAppContext) {
8440 let settings = cx.read(EditorSettings::test);
8441 let language = Arc::new(Language::new(
8442 LanguageConfig {
8443 brackets: vec![
8444 BracketPair {
8445 start: "{".to_string(),
8446 end: "}".to_string(),
8447 close: true,
8448 newline: true,
8449 },
8450 BracketPair {
8451 start: "/* ".to_string(),
8452 end: " */".to_string(),
8453 close: true,
8454 newline: true,
8455 },
8456 ],
8457 ..Default::default()
8458 },
8459 Some(tree_sitter_rust::language()),
8460 ));
8461
8462 let text = concat!(
8463 "{ }\n", // Suppress rustfmt
8464 " x\n", //
8465 " /* */\n", //
8466 "x\n", //
8467 "{{} }\n", //
8468 );
8469
8470 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8471 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8472 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8473 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
8474 .await;
8475
8476 view.update(&mut cx, |view, cx| {
8477 view.select_display_ranges(
8478 &[
8479 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
8480 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
8481 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
8482 ],
8483 cx,
8484 );
8485 view.newline(&Newline, cx);
8486
8487 assert_eq!(
8488 view.buffer().read(cx).read(cx).text(),
8489 concat!(
8490 "{ \n", // Suppress rustfmt
8491 "\n", //
8492 "}\n", //
8493 " x\n", //
8494 " /* \n", //
8495 " \n", //
8496 " */\n", //
8497 "x\n", //
8498 "{{} \n", //
8499 "}\n", //
8500 )
8501 );
8502 });
8503 }
8504
8505 #[gpui::test]
8506 fn test_highlighted_ranges(cx: &mut gpui::MutableAppContext) {
8507 let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
8508 let settings = EditorSettings::test(&cx);
8509 let (_, editor) = cx.add_window(Default::default(), |cx| {
8510 build_editor(buffer.clone(), settings, cx)
8511 });
8512
8513 editor.update(cx, |editor, cx| {
8514 struct Type1;
8515 struct Type2;
8516
8517 let buffer = buffer.read(cx).snapshot(cx);
8518
8519 let anchor_range = |range: Range<Point>| {
8520 buffer.anchor_after(range.start)..buffer.anchor_after(range.end)
8521 };
8522
8523 editor.highlight_ranges::<Type1>(
8524 vec![
8525 anchor_range(Point::new(2, 1)..Point::new(2, 3)),
8526 anchor_range(Point::new(4, 2)..Point::new(4, 4)),
8527 anchor_range(Point::new(6, 3)..Point::new(6, 5)),
8528 anchor_range(Point::new(8, 4)..Point::new(8, 6)),
8529 ],
8530 Color::red(),
8531 cx,
8532 );
8533 editor.highlight_ranges::<Type2>(
8534 vec![
8535 anchor_range(Point::new(3, 2)..Point::new(3, 5)),
8536 anchor_range(Point::new(5, 3)..Point::new(5, 6)),
8537 anchor_range(Point::new(7, 4)..Point::new(7, 7)),
8538 anchor_range(Point::new(9, 5)..Point::new(9, 8)),
8539 ],
8540 Color::green(),
8541 cx,
8542 );
8543
8544 let snapshot = editor.snapshot(cx);
8545 let mut highlighted_ranges = editor.highlighted_ranges_in_range(
8546 anchor_range(Point::new(3, 4)..Point::new(7, 4)),
8547 &snapshot,
8548 );
8549 // Enforce a consistent ordering based on color without relying on the ordering of the
8550 // highlight's `TypeId` which is non-deterministic.
8551 highlighted_ranges.sort_unstable_by_key(|(_, color)| *color);
8552 assert_eq!(
8553 highlighted_ranges,
8554 &[
8555 (
8556 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 5),
8557 Color::green(),
8558 ),
8559 (
8560 DisplayPoint::new(5, 3)..DisplayPoint::new(5, 6),
8561 Color::green(),
8562 ),
8563 (
8564 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 4),
8565 Color::red(),
8566 ),
8567 (
8568 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
8569 Color::red(),
8570 ),
8571 ]
8572 );
8573 assert_eq!(
8574 editor.highlighted_ranges_in_range(
8575 anchor_range(Point::new(5, 6)..Point::new(6, 4)),
8576 &snapshot,
8577 ),
8578 &[(
8579 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
8580 Color::red(),
8581 )]
8582 );
8583 });
8584 }
8585
8586 #[test]
8587 fn test_combine_syntax_and_fuzzy_match_highlights() {
8588 let string = "abcdefghijklmnop";
8589 let default = HighlightStyle::default();
8590 let syntax_ranges = [
8591 (
8592 0..3,
8593 HighlightStyle {
8594 color: Color::red(),
8595 ..default
8596 },
8597 ),
8598 (
8599 4..8,
8600 HighlightStyle {
8601 color: Color::green(),
8602 ..default
8603 },
8604 ),
8605 ];
8606 let match_indices = [4, 6, 7, 8];
8607 assert_eq!(
8608 combine_syntax_and_fuzzy_match_highlights(
8609 &string,
8610 default,
8611 syntax_ranges.into_iter(),
8612 &match_indices,
8613 ),
8614 &[
8615 (
8616 0..3,
8617 HighlightStyle {
8618 color: Color::red(),
8619 ..default
8620 },
8621 ),
8622 (
8623 4..5,
8624 HighlightStyle {
8625 color: Color::green(),
8626 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
8627 ..default
8628 },
8629 ),
8630 (
8631 5..6,
8632 HighlightStyle {
8633 color: Color::green(),
8634 ..default
8635 },
8636 ),
8637 (
8638 6..8,
8639 HighlightStyle {
8640 color: Color::green(),
8641 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
8642 ..default
8643 },
8644 ),
8645 (
8646 8..9,
8647 HighlightStyle {
8648 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
8649 ..default
8650 },
8651 ),
8652 ]
8653 );
8654 }
8655
8656 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
8657 let point = DisplayPoint::new(row as u32, column as u32);
8658 point..point
8659 }
8660
8661 fn build_editor(
8662 buffer: ModelHandle<MultiBuffer>,
8663 settings: EditorSettings,
8664 cx: &mut ViewContext<Editor>,
8665 ) -> Editor {
8666 Editor::for_buffer(buffer, Arc::new(move |_| settings.clone()), None, cx)
8667 }
8668}
8669
8670trait RangeExt<T> {
8671 fn sorted(&self) -> Range<T>;
8672 fn to_inclusive(&self) -> RangeInclusive<T>;
8673}
8674
8675impl<T: Ord + Clone> RangeExt<T> for Range<T> {
8676 fn sorted(&self) -> Self {
8677 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
8678 }
8679
8680 fn to_inclusive(&self) -> RangeInclusive<T> {
8681 self.start.clone()..=self.end.clone()
8682 }
8683}