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, VecDeque};
14pub use display_map::DisplayPoint;
15use display_map::*;
16pub use element::*;
17use fuzzy::{StringMatch, StringMatchCandidate};
18use gpui::{
19 action,
20 color::Color,
21 elements::*,
22 executor,
23 fonts::{self, HighlightStyle, TextStyle},
24 geometry::vector::{vec2f, Vector2F},
25 keymap::Binding,
26 platform::CursorStyle,
27 text_layout, AppContext, AsyncAppContext, ClipboardItem, Element, ElementBox, Entity,
28 ModelHandle, MutableAppContext, RenderContext, Task, View, ViewContext, ViewHandle,
29 WeakViewHandle,
30};
31use itertools::Itertools as _;
32pub use language::{char_kind, CharKind};
33use language::{
34 BracketPair, Buffer, CodeAction, CodeLabel, Completion, Diagnostic, DiagnosticSeverity,
35 Language, OffsetRangeExt, Point, Selection, SelectionGoal, TransactionId,
36};
37use multi_buffer::MultiBufferChunks;
38pub use multi_buffer::{
39 Anchor, AnchorRangeExt, ExcerptId, MultiBuffer, MultiBufferSnapshot, ToOffset, ToPoint,
40};
41use ordered_float::OrderedFloat;
42use project::{Project, ProjectTransaction};
43use serde::{Deserialize, Serialize};
44use smallvec::SmallVec;
45use smol::Timer;
46use snippet::Snippet;
47use std::{
48 any::TypeId,
49 cmp::{self, Ordering, Reverse},
50 iter::{self, FromIterator},
51 mem,
52 ops::{Deref, DerefMut, Range, RangeInclusive, Sub},
53 sync::Arc,
54 time::{Duration, Instant},
55};
56pub use sum_tree::Bias;
57use text::rope::TextDimension;
58use theme::DiagnosticStyle;
59use util::{post_inc, ResultExt, TryFutureExt};
60use workspace::{settings, ItemNavHistory, Settings, Workspace};
61
62const CURSOR_BLINK_INTERVAL: Duration = Duration::from_millis(500);
63const MAX_LINE_LEN: usize = 1024;
64const MIN_NAVIGATION_HISTORY_ROW_DELTA: i64 = 10;
65const MAX_SELECTION_HISTORY_LEN: usize = 1024;
66
67action!(Cancel);
68action!(Backspace);
69action!(Delete);
70action!(Input, String);
71action!(Newline);
72action!(Tab, Direction);
73action!(Indent);
74action!(Outdent);
75action!(DeleteLine);
76action!(DeleteToPreviousWordStart);
77action!(DeleteToPreviousSubwordStart);
78action!(DeleteToNextWordEnd);
79action!(DeleteToNextSubwordEnd);
80action!(DeleteToBeginningOfLine);
81action!(DeleteToEndOfLine);
82action!(CutToEndOfLine);
83action!(DuplicateLine);
84action!(MoveLineUp);
85action!(MoveLineDown);
86action!(Cut);
87action!(Copy);
88action!(Paste);
89action!(Undo);
90action!(Redo);
91action!(MoveUp);
92action!(MoveDown);
93action!(MoveLeft);
94action!(MoveRight);
95action!(MoveToPreviousWordStart);
96action!(MoveToPreviousSubwordStart);
97action!(MoveToNextWordEnd);
98action!(MoveToNextSubwordEnd);
99action!(MoveToBeginningOfLine);
100action!(MoveToEndOfLine);
101action!(MoveToBeginning);
102action!(MoveToEnd);
103action!(SelectUp);
104action!(SelectDown);
105action!(SelectLeft);
106action!(SelectRight);
107action!(SelectToPreviousWordStart);
108action!(SelectToPreviousSubwordStart);
109action!(SelectToNextWordEnd);
110action!(SelectToNextSubwordEnd);
111action!(SelectToBeginningOfLine, bool);
112action!(SelectToEndOfLine, bool);
113action!(SelectToBeginning);
114action!(SelectToEnd);
115action!(SelectAll);
116action!(SelectLine);
117action!(SplitSelectionIntoLines);
118action!(AddSelectionAbove);
119action!(AddSelectionBelow);
120action!(SelectNext, bool);
121action!(ToggleComments);
122action!(SelectLargerSyntaxNode);
123action!(SelectSmallerSyntaxNode);
124action!(MoveToEnclosingBracket);
125action!(UndoSelection);
126action!(RedoSelection);
127action!(GoToDiagnostic, Direction);
128action!(GoToDefinition);
129action!(FindAllReferences);
130action!(Rename);
131action!(ConfirmRename);
132action!(PageUp);
133action!(PageDown);
134action!(Fold);
135action!(UnfoldLines);
136action!(FoldSelectedRanges);
137action!(Scroll, Vector2F);
138action!(Select, SelectPhase);
139action!(ShowCompletions);
140action!(ToggleCodeActions, bool);
141action!(ConfirmCompletion, Option<usize>);
142action!(ConfirmCodeAction, Option<usize>);
143action!(OpenExcerpts);
144action!(RestartLanguageServer);
145
146enum DocumentHighlightRead {}
147enum DocumentHighlightWrite {}
148
149#[derive(Copy, Clone, PartialEq, Eq)]
150pub enum Direction {
151 Prev,
152 Next,
153}
154
155pub fn init(cx: &mut MutableAppContext) {
156 cx.add_bindings(vec![
157 Binding::new("escape", Cancel, Some("Editor")),
158 Binding::new("backspace", Backspace, Some("Editor")),
159 Binding::new("ctrl-h", Backspace, Some("Editor")),
160 Binding::new("delete", Delete, Some("Editor")),
161 Binding::new("ctrl-d", Delete, Some("Editor")),
162 Binding::new("enter", Newline, Some("Editor && mode == full")),
163 Binding::new(
164 "alt-enter",
165 Input("\n".into()),
166 Some("Editor && mode == auto_height"),
167 ),
168 Binding::new(
169 "enter",
170 ConfirmCompletion(None),
171 Some("Editor && showing_completions"),
172 ),
173 Binding::new(
174 "enter",
175 ConfirmCodeAction(None),
176 Some("Editor && showing_code_actions"),
177 ),
178 Binding::new("enter", ConfirmRename, Some("Editor && renaming")),
179 Binding::new("tab", Tab(Direction::Next), Some("Editor")),
180 Binding::new("shift-tab", Tab(Direction::Prev), Some("Editor")),
181 Binding::new(
182 "tab",
183 ConfirmCompletion(None),
184 Some("Editor && showing_completions"),
185 ),
186 Binding::new("cmd-[", Outdent, Some("Editor")),
187 Binding::new("cmd-]", Indent, Some("Editor")),
188 Binding::new("ctrl-shift-K", DeleteLine, Some("Editor")),
189 Binding::new("alt-backspace", DeleteToPreviousWordStart, Some("Editor")),
190 Binding::new("alt-h", DeleteToPreviousWordStart, Some("Editor")),
191 Binding::new(
192 "ctrl-alt-backspace",
193 DeleteToPreviousSubwordStart,
194 Some("Editor"),
195 ),
196 Binding::new("ctrl-alt-h", DeleteToPreviousSubwordStart, Some("Editor")),
197 Binding::new("alt-delete", DeleteToNextWordEnd, Some("Editor")),
198 Binding::new("alt-d", DeleteToNextWordEnd, Some("Editor")),
199 Binding::new("ctrl-alt-delete", DeleteToNextSubwordEnd, Some("Editor")),
200 Binding::new("ctrl-alt-d", DeleteToNextSubwordEnd, Some("Editor")),
201 Binding::new("cmd-backspace", DeleteToBeginningOfLine, Some("Editor")),
202 Binding::new("cmd-delete", DeleteToEndOfLine, Some("Editor")),
203 Binding::new("ctrl-k", CutToEndOfLine, Some("Editor")),
204 Binding::new("cmd-shift-D", DuplicateLine, Some("Editor")),
205 Binding::new("ctrl-cmd-up", MoveLineUp, Some("Editor")),
206 Binding::new("ctrl-cmd-down", MoveLineDown, Some("Editor")),
207 Binding::new("cmd-x", Cut, Some("Editor")),
208 Binding::new("cmd-c", Copy, Some("Editor")),
209 Binding::new("cmd-v", Paste, Some("Editor")),
210 Binding::new("cmd-z", Undo, Some("Editor")),
211 Binding::new("cmd-shift-Z", Redo, Some("Editor")),
212 Binding::new("up", MoveUp, Some("Editor")),
213 Binding::new("down", MoveDown, Some("Editor")),
214 Binding::new("left", MoveLeft, Some("Editor")),
215 Binding::new("right", MoveRight, Some("Editor")),
216 Binding::new("ctrl-p", MoveUp, Some("Editor")),
217 Binding::new("ctrl-n", MoveDown, Some("Editor")),
218 Binding::new("ctrl-b", MoveLeft, Some("Editor")),
219 Binding::new("ctrl-f", MoveRight, Some("Editor")),
220 Binding::new("alt-left", MoveToPreviousWordStart, Some("Editor")),
221 Binding::new("alt-b", MoveToPreviousWordStart, Some("Editor")),
222 Binding::new("ctrl-alt-left", MoveToPreviousSubwordStart, Some("Editor")),
223 Binding::new("ctrl-alt-b", MoveToPreviousSubwordStart, Some("Editor")),
224 Binding::new("alt-right", MoveToNextWordEnd, Some("Editor")),
225 Binding::new("alt-f", MoveToNextWordEnd, Some("Editor")),
226 Binding::new("ctrl-alt-right", MoveToNextSubwordEnd, Some("Editor")),
227 Binding::new("ctrl-alt-f", MoveToNextSubwordEnd, Some("Editor")),
228 Binding::new("cmd-left", MoveToBeginningOfLine, Some("Editor")),
229 Binding::new("ctrl-a", MoveToBeginningOfLine, Some("Editor")),
230 Binding::new("cmd-right", MoveToEndOfLine, Some("Editor")),
231 Binding::new("ctrl-e", MoveToEndOfLine, Some("Editor")),
232 Binding::new("cmd-up", MoveToBeginning, Some("Editor")),
233 Binding::new("cmd-down", MoveToEnd, Some("Editor")),
234 Binding::new("shift-up", SelectUp, Some("Editor")),
235 Binding::new("ctrl-shift-P", SelectUp, Some("Editor")),
236 Binding::new("shift-down", SelectDown, Some("Editor")),
237 Binding::new("ctrl-shift-N", SelectDown, Some("Editor")),
238 Binding::new("shift-left", SelectLeft, Some("Editor")),
239 Binding::new("ctrl-shift-B", SelectLeft, Some("Editor")),
240 Binding::new("shift-right", SelectRight, Some("Editor")),
241 Binding::new("ctrl-shift-F", SelectRight, Some("Editor")),
242 Binding::new("alt-shift-left", SelectToPreviousWordStart, Some("Editor")),
243 Binding::new("alt-shift-B", SelectToPreviousWordStart, Some("Editor")),
244 Binding::new(
245 "ctrl-alt-shift-left",
246 SelectToPreviousSubwordStart,
247 Some("Editor"),
248 ),
249 Binding::new(
250 "ctrl-alt-shift-B",
251 SelectToPreviousSubwordStart,
252 Some("Editor"),
253 ),
254 Binding::new("alt-shift-right", SelectToNextWordEnd, Some("Editor")),
255 Binding::new("alt-shift-F", SelectToNextWordEnd, Some("Editor")),
256 Binding::new(
257 "cmd-shift-left",
258 SelectToBeginningOfLine(true),
259 Some("Editor"),
260 ),
261 Binding::new(
262 "ctrl-alt-shift-right",
263 SelectToNextSubwordEnd,
264 Some("Editor"),
265 ),
266 Binding::new("ctrl-alt-shift-F", SelectToNextSubwordEnd, Some("Editor")),
267 Binding::new(
268 "ctrl-shift-A",
269 SelectToBeginningOfLine(true),
270 Some("Editor"),
271 ),
272 Binding::new("cmd-shift-right", SelectToEndOfLine(true), Some("Editor")),
273 Binding::new("ctrl-shift-E", SelectToEndOfLine(true), Some("Editor")),
274 Binding::new("cmd-shift-up", SelectToBeginning, Some("Editor")),
275 Binding::new("cmd-shift-down", SelectToEnd, Some("Editor")),
276 Binding::new("cmd-a", SelectAll, Some("Editor")),
277 Binding::new("cmd-l", SelectLine, Some("Editor")),
278 Binding::new("cmd-shift-L", SplitSelectionIntoLines, Some("Editor")),
279 Binding::new("cmd-alt-up", AddSelectionAbove, Some("Editor")),
280 Binding::new("cmd-ctrl-p", AddSelectionAbove, Some("Editor")),
281 Binding::new("cmd-alt-down", AddSelectionBelow, Some("Editor")),
282 Binding::new("cmd-ctrl-n", AddSelectionBelow, Some("Editor")),
283 Binding::new("cmd-d", SelectNext(false), Some("Editor")),
284 Binding::new("cmd-k cmd-d", SelectNext(true), Some("Editor")),
285 Binding::new("cmd-/", ToggleComments, Some("Editor")),
286 Binding::new("alt-up", SelectLargerSyntaxNode, Some("Editor")),
287 Binding::new("ctrl-w", SelectLargerSyntaxNode, Some("Editor")),
288 Binding::new("alt-down", SelectSmallerSyntaxNode, Some("Editor")),
289 Binding::new("ctrl-shift-W", SelectSmallerSyntaxNode, Some("Editor")),
290 Binding::new("cmd-u", UndoSelection, Some("Editor")),
291 Binding::new("cmd-shift-U", RedoSelection, Some("Editor")),
292 Binding::new("f8", GoToDiagnostic(Direction::Next), Some("Editor")),
293 Binding::new("shift-f8", GoToDiagnostic(Direction::Prev), Some("Editor")),
294 Binding::new("f2", Rename, Some("Editor")),
295 Binding::new("f12", GoToDefinition, Some("Editor")),
296 Binding::new("alt-shift-f12", FindAllReferences, Some("Editor")),
297 Binding::new("ctrl-m", MoveToEnclosingBracket, Some("Editor")),
298 Binding::new("pageup", PageUp, Some("Editor")),
299 Binding::new("pagedown", PageDown, Some("Editor")),
300 Binding::new("alt-cmd-[", Fold, Some("Editor")),
301 Binding::new("alt-cmd-]", UnfoldLines, Some("Editor")),
302 Binding::new("alt-cmd-f", FoldSelectedRanges, Some("Editor")),
303 Binding::new("ctrl-space", ShowCompletions, Some("Editor")),
304 Binding::new("cmd-.", ToggleCodeActions(false), Some("Editor")),
305 Binding::new("alt-enter", OpenExcerpts, Some("Editor")),
306 Binding::new("cmd-f10", RestartLanguageServer, Some("Editor")),
307 ]);
308
309 cx.add_action(Editor::open_new);
310 cx.add_action(|this: &mut Editor, action: &Scroll, cx| this.set_scroll_position(action.0, cx));
311 cx.add_action(Editor::select);
312 cx.add_action(Editor::cancel);
313 cx.add_action(Editor::handle_input);
314 cx.add_action(Editor::newline);
315 cx.add_action(Editor::backspace);
316 cx.add_action(Editor::delete);
317 cx.add_action(Editor::tab);
318 cx.add_action(Editor::indent);
319 cx.add_action(Editor::outdent);
320 cx.add_action(Editor::delete_line);
321 cx.add_action(Editor::delete_to_previous_word_start);
322 cx.add_action(Editor::delete_to_previous_subword_start);
323 cx.add_action(Editor::delete_to_next_word_end);
324 cx.add_action(Editor::delete_to_next_subword_end);
325 cx.add_action(Editor::delete_to_beginning_of_line);
326 cx.add_action(Editor::delete_to_end_of_line);
327 cx.add_action(Editor::cut_to_end_of_line);
328 cx.add_action(Editor::duplicate_line);
329 cx.add_action(Editor::move_line_up);
330 cx.add_action(Editor::move_line_down);
331 cx.add_action(Editor::cut);
332 cx.add_action(Editor::copy);
333 cx.add_action(Editor::paste);
334 cx.add_action(Editor::undo);
335 cx.add_action(Editor::redo);
336 cx.add_action(Editor::move_up);
337 cx.add_action(Editor::move_down);
338 cx.add_action(Editor::move_left);
339 cx.add_action(Editor::move_right);
340 cx.add_action(Editor::move_to_previous_word_start);
341 cx.add_action(Editor::move_to_previous_subword_start);
342 cx.add_action(Editor::move_to_next_word_end);
343 cx.add_action(Editor::move_to_next_subword_end);
344 cx.add_action(Editor::move_to_beginning_of_line);
345 cx.add_action(Editor::move_to_end_of_line);
346 cx.add_action(Editor::move_to_beginning);
347 cx.add_action(Editor::move_to_end);
348 cx.add_action(Editor::select_up);
349 cx.add_action(Editor::select_down);
350 cx.add_action(Editor::select_left);
351 cx.add_action(Editor::select_right);
352 cx.add_action(Editor::select_to_previous_word_start);
353 cx.add_action(Editor::select_to_previous_subword_start);
354 cx.add_action(Editor::select_to_next_word_end);
355 cx.add_action(Editor::select_to_next_subword_end);
356 cx.add_action(Editor::select_to_beginning_of_line);
357 cx.add_action(Editor::select_to_end_of_line);
358 cx.add_action(Editor::select_to_beginning);
359 cx.add_action(Editor::select_to_end);
360 cx.add_action(Editor::select_all);
361 cx.add_action(Editor::select_line);
362 cx.add_action(Editor::split_selection_into_lines);
363 cx.add_action(Editor::add_selection_above);
364 cx.add_action(Editor::add_selection_below);
365 cx.add_action(Editor::select_next);
366 cx.add_action(Editor::toggle_comments);
367 cx.add_action(Editor::select_larger_syntax_node);
368 cx.add_action(Editor::select_smaller_syntax_node);
369 cx.add_action(Editor::move_to_enclosing_bracket);
370 cx.add_action(Editor::undo_selection);
371 cx.add_action(Editor::redo_selection);
372 cx.add_action(Editor::go_to_diagnostic);
373 cx.add_action(Editor::go_to_definition);
374 cx.add_action(Editor::page_up);
375 cx.add_action(Editor::page_down);
376 cx.add_action(Editor::fold);
377 cx.add_action(Editor::unfold_lines);
378 cx.add_action(Editor::fold_selected_ranges);
379 cx.add_action(Editor::show_completions);
380 cx.add_action(Editor::toggle_code_actions);
381 cx.add_action(Editor::open_excerpts);
382 cx.add_action(Editor::restart_language_server);
383 cx.add_async_action(Editor::confirm_completion);
384 cx.add_async_action(Editor::confirm_code_action);
385 cx.add_async_action(Editor::rename);
386 cx.add_async_action(Editor::confirm_rename);
387 cx.add_async_action(Editor::find_all_references);
388
389 workspace::register_project_item::<Editor>(cx);
390 workspace::register_followable_item::<Editor>(cx);
391}
392
393trait InvalidationRegion {
394 fn ranges(&self) -> &[Range<Anchor>];
395}
396
397#[derive(Clone, Debug)]
398pub enum SelectPhase {
399 Begin {
400 position: DisplayPoint,
401 add: bool,
402 click_count: usize,
403 },
404 BeginColumnar {
405 position: DisplayPoint,
406 overshoot: u32,
407 },
408 Extend {
409 position: DisplayPoint,
410 click_count: usize,
411 },
412 Update {
413 position: DisplayPoint,
414 overshoot: u32,
415 scroll_position: Vector2F,
416 },
417 End,
418}
419
420#[derive(Clone, Debug)]
421pub enum SelectMode {
422 Character,
423 Word(Range<Anchor>),
424 Line(Range<Anchor>),
425 All,
426}
427
428#[derive(PartialEq, Eq)]
429pub enum Autoscroll {
430 Fit,
431 Center,
432 Newest,
433}
434
435#[derive(Copy, Clone, PartialEq, Eq)]
436pub enum EditorMode {
437 SingleLine,
438 AutoHeight { max_lines: usize },
439 Full,
440}
441
442#[derive(Clone)]
443pub enum SoftWrap {
444 None,
445 EditorWidth,
446 Column(u32),
447}
448
449#[derive(Clone)]
450pub struct EditorStyle {
451 pub text: TextStyle,
452 pub placeholder_text: Option<TextStyle>,
453 pub theme: theme::Editor,
454}
455
456type CompletionId = usize;
457
458pub type GetFieldEditorTheme = fn(&theme::Theme) -> theme::FieldEditor;
459
460type OverrideTextStyle = dyn Fn(&EditorStyle) -> Option<HighlightStyle>;
461
462pub struct Editor {
463 handle: WeakViewHandle<Self>,
464 buffer: ModelHandle<MultiBuffer>,
465 display_map: ModelHandle<DisplayMap>,
466 next_selection_id: usize,
467 selections: Arc<[Selection<Anchor>]>,
468 pending_selection: Option<PendingSelection>,
469 columnar_selection_tail: Option<Anchor>,
470 add_selections_state: Option<AddSelectionsState>,
471 select_next_state: Option<SelectNextState>,
472 selection_history: SelectionHistory,
473 autoclose_stack: InvalidationStack<BracketPairState>,
474 snippet_stack: InvalidationStack<SnippetState>,
475 select_larger_syntax_node_stack: Vec<Box<[Selection<usize>]>>,
476 active_diagnostics: Option<ActiveDiagnosticGroup>,
477 scroll_position: Vector2F,
478 scroll_top_anchor: Anchor,
479 autoscroll_request: Option<(Autoscroll, bool)>,
480 soft_wrap_mode_override: Option<settings::SoftWrap>,
481 get_field_editor_theme: Option<GetFieldEditorTheme>,
482 override_text_style: Option<Box<OverrideTextStyle>>,
483 project: Option<ModelHandle<Project>>,
484 focused: bool,
485 show_local_cursors: bool,
486 show_local_selections: bool,
487 blink_epoch: usize,
488 blinking_paused: bool,
489 mode: EditorMode,
490 vertical_scroll_margin: f32,
491 placeholder_text: Option<Arc<str>>,
492 highlighted_rows: Option<Range<u32>>,
493 background_highlights: BTreeMap<TypeId, (Color, Vec<Range<Anchor>>)>,
494 nav_history: Option<ItemNavHistory>,
495 context_menu: Option<ContextMenu>,
496 completion_tasks: Vec<(CompletionId, Task<Option<()>>)>,
497 next_completion_id: CompletionId,
498 available_code_actions: Option<(ModelHandle<Buffer>, Arc<[CodeAction]>)>,
499 code_actions_task: Option<Task<()>>,
500 document_highlights_task: Option<Task<()>>,
501 pending_rename: Option<RenameState>,
502 searchable: bool,
503 cursor_shape: CursorShape,
504 keymap_context_layers: BTreeMap<TypeId, gpui::keymap::Context>,
505 input_enabled: bool,
506 leader_replica_id: Option<u16>,
507}
508
509pub struct EditorSnapshot {
510 pub mode: EditorMode,
511 pub display_snapshot: DisplaySnapshot,
512 pub placeholder_text: Option<Arc<str>>,
513 is_focused: bool,
514 scroll_position: Vector2F,
515 scroll_top_anchor: Anchor,
516}
517
518#[derive(Clone)]
519pub struct PendingSelection {
520 selection: Selection<Anchor>,
521 mode: SelectMode,
522}
523
524#[derive(Clone)]
525struct SelectionHistoryEntry {
526 selections: Arc<[Selection<Anchor>]>,
527 select_next_state: Option<SelectNextState>,
528 add_selections_state: Option<AddSelectionsState>,
529}
530
531enum SelectionHistoryMode {
532 Normal,
533 Undoing,
534 Redoing,
535}
536
537impl Default for SelectionHistoryMode {
538 fn default() -> Self {
539 Self::Normal
540 }
541}
542
543#[derive(Default)]
544struct SelectionHistory {
545 selections_by_transaction:
546 HashMap<TransactionId, (Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)>,
547 mode: SelectionHistoryMode,
548 undo_stack: VecDeque<SelectionHistoryEntry>,
549 redo_stack: VecDeque<SelectionHistoryEntry>,
550}
551
552impl SelectionHistory {
553 fn insert_transaction(
554 &mut self,
555 transaction_id: TransactionId,
556 selections: Arc<[Selection<Anchor>]>,
557 ) {
558 self.selections_by_transaction
559 .insert(transaction_id, (selections, None));
560 }
561
562 fn transaction(
563 &self,
564 transaction_id: TransactionId,
565 ) -> Option<&(Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)> {
566 self.selections_by_transaction.get(&transaction_id)
567 }
568
569 fn transaction_mut(
570 &mut self,
571 transaction_id: TransactionId,
572 ) -> Option<&mut (Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)> {
573 self.selections_by_transaction.get_mut(&transaction_id)
574 }
575
576 fn push(&mut self, entry: SelectionHistoryEntry) {
577 if !entry.selections.is_empty() {
578 match self.mode {
579 SelectionHistoryMode::Normal => {
580 self.push_undo(entry);
581 self.redo_stack.clear();
582 }
583 SelectionHistoryMode::Undoing => self.push_redo(entry),
584 SelectionHistoryMode::Redoing => self.push_undo(entry),
585 }
586 }
587 }
588
589 fn push_undo(&mut self, entry: SelectionHistoryEntry) {
590 if self
591 .undo_stack
592 .back()
593 .map_or(true, |e| e.selections != entry.selections)
594 {
595 self.undo_stack.push_back(entry);
596 if self.undo_stack.len() > MAX_SELECTION_HISTORY_LEN {
597 self.undo_stack.pop_front();
598 }
599 }
600 }
601
602 fn push_redo(&mut self, entry: SelectionHistoryEntry) {
603 if self
604 .redo_stack
605 .back()
606 .map_or(true, |e| e.selections != entry.selections)
607 {
608 self.redo_stack.push_back(entry);
609 if self.redo_stack.len() > MAX_SELECTION_HISTORY_LEN {
610 self.redo_stack.pop_front();
611 }
612 }
613 }
614}
615
616#[derive(Clone)]
617struct AddSelectionsState {
618 above: bool,
619 stack: Vec<usize>,
620}
621
622#[derive(Clone)]
623struct SelectNextState {
624 query: AhoCorasick,
625 wordwise: bool,
626 done: bool,
627}
628
629struct BracketPairState {
630 ranges: Vec<Range<Anchor>>,
631 pair: BracketPair,
632}
633
634struct SnippetState {
635 ranges: Vec<Vec<Range<Anchor>>>,
636 active_index: usize,
637}
638
639pub struct RenameState {
640 pub range: Range<Anchor>,
641 pub old_name: String,
642 pub editor: ViewHandle<Editor>,
643 block_id: BlockId,
644}
645
646struct InvalidationStack<T>(Vec<T>);
647
648enum ContextMenu {
649 Completions(CompletionsMenu),
650 CodeActions(CodeActionsMenu),
651}
652
653impl ContextMenu {
654 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) -> bool {
655 if self.visible() {
656 match self {
657 ContextMenu::Completions(menu) => menu.select_prev(cx),
658 ContextMenu::CodeActions(menu) => menu.select_prev(cx),
659 }
660 true
661 } else {
662 false
663 }
664 }
665
666 fn select_next(&mut self, cx: &mut ViewContext<Editor>) -> bool {
667 if self.visible() {
668 match self {
669 ContextMenu::Completions(menu) => menu.select_next(cx),
670 ContextMenu::CodeActions(menu) => menu.select_next(cx),
671 }
672 true
673 } else {
674 false
675 }
676 }
677
678 fn visible(&self) -> bool {
679 match self {
680 ContextMenu::Completions(menu) => menu.visible(),
681 ContextMenu::CodeActions(menu) => menu.visible(),
682 }
683 }
684
685 fn render(
686 &self,
687 cursor_position: DisplayPoint,
688 style: EditorStyle,
689 cx: &AppContext,
690 ) -> (DisplayPoint, ElementBox) {
691 match self {
692 ContextMenu::Completions(menu) => (cursor_position, menu.render(style, cx)),
693 ContextMenu::CodeActions(menu) => menu.render(cursor_position, style),
694 }
695 }
696}
697
698struct CompletionsMenu {
699 id: CompletionId,
700 initial_position: Anchor,
701 buffer: ModelHandle<Buffer>,
702 completions: Arc<[Completion]>,
703 match_candidates: Vec<StringMatchCandidate>,
704 matches: Arc<[StringMatch]>,
705 selected_item: usize,
706 list: UniformListState,
707}
708
709impl CompletionsMenu {
710 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) {
711 if self.selected_item > 0 {
712 self.selected_item -= 1;
713 self.list.scroll_to(ScrollTarget::Show(self.selected_item));
714 }
715 cx.notify();
716 }
717
718 fn select_next(&mut self, cx: &mut ViewContext<Editor>) {
719 if self.selected_item + 1 < self.matches.len() {
720 self.selected_item += 1;
721 self.list.scroll_to(ScrollTarget::Show(self.selected_item));
722 }
723 cx.notify();
724 }
725
726 fn visible(&self) -> bool {
727 !self.matches.is_empty()
728 }
729
730 fn render(&self, style: EditorStyle, _: &AppContext) -> ElementBox {
731 enum CompletionTag {}
732
733 let completions = self.completions.clone();
734 let matches = self.matches.clone();
735 let selected_item = self.selected_item;
736 let container_style = style.autocomplete.container;
737 UniformList::new(self.list.clone(), matches.len(), move |range, items, cx| {
738 let start_ix = range.start;
739 for (ix, mat) in matches[range].iter().enumerate() {
740 let completion = &completions[mat.candidate_id];
741 let item_ix = start_ix + ix;
742 items.push(
743 MouseEventHandler::new::<CompletionTag, _, _>(
744 mat.candidate_id,
745 cx,
746 |state, _| {
747 let item_style = if item_ix == selected_item {
748 style.autocomplete.selected_item
749 } else if state.hovered {
750 style.autocomplete.hovered_item
751 } else {
752 style.autocomplete.item
753 };
754
755 Text::new(completion.label.text.clone(), style.text.clone())
756 .with_soft_wrap(false)
757 .with_highlights(combine_syntax_and_fuzzy_match_highlights(
758 &completion.label.text,
759 style.text.color.into(),
760 styled_runs_for_code_label(&completion.label, &style.syntax),
761 &mat.positions,
762 ))
763 .contained()
764 .with_style(item_style)
765 .boxed()
766 },
767 )
768 .with_cursor_style(CursorStyle::PointingHand)
769 .on_mouse_down(move |cx| {
770 cx.dispatch_action(ConfirmCompletion(Some(item_ix)));
771 })
772 .boxed(),
773 );
774 }
775 })
776 .with_width_from_item(
777 self.matches
778 .iter()
779 .enumerate()
780 .max_by_key(|(_, mat)| {
781 self.completions[mat.candidate_id]
782 .label
783 .text
784 .chars()
785 .count()
786 })
787 .map(|(ix, _)| ix),
788 )
789 .contained()
790 .with_style(container_style)
791 .boxed()
792 }
793
794 pub async fn filter(&mut self, query: Option<&str>, executor: Arc<executor::Background>) {
795 let mut matches = if let Some(query) = query {
796 fuzzy::match_strings(
797 &self.match_candidates,
798 query,
799 false,
800 100,
801 &Default::default(),
802 executor,
803 )
804 .await
805 } else {
806 self.match_candidates
807 .iter()
808 .enumerate()
809 .map(|(candidate_id, candidate)| StringMatch {
810 candidate_id,
811 score: Default::default(),
812 positions: Default::default(),
813 string: candidate.string.clone(),
814 })
815 .collect()
816 };
817 matches.sort_unstable_by_key(|mat| {
818 (
819 Reverse(OrderedFloat(mat.score)),
820 self.completions[mat.candidate_id].sort_key(),
821 )
822 });
823
824 for mat in &mut matches {
825 let filter_start = self.completions[mat.candidate_id].label.filter_range.start;
826 for position in &mut mat.positions {
827 *position += filter_start;
828 }
829 }
830
831 self.matches = matches.into();
832 }
833}
834
835#[derive(Clone)]
836struct CodeActionsMenu {
837 actions: Arc<[CodeAction]>,
838 buffer: ModelHandle<Buffer>,
839 selected_item: usize,
840 list: UniformListState,
841 deployed_from_indicator: bool,
842}
843
844impl CodeActionsMenu {
845 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) {
846 if self.selected_item > 0 {
847 self.selected_item -= 1;
848 cx.notify()
849 }
850 }
851
852 fn select_next(&mut self, cx: &mut ViewContext<Editor>) {
853 if self.selected_item + 1 < self.actions.len() {
854 self.selected_item += 1;
855 cx.notify()
856 }
857 }
858
859 fn visible(&self) -> bool {
860 !self.actions.is_empty()
861 }
862
863 fn render(
864 &self,
865 mut cursor_position: DisplayPoint,
866 style: EditorStyle,
867 ) -> (DisplayPoint, ElementBox) {
868 enum ActionTag {}
869
870 let container_style = style.autocomplete.container;
871 let actions = self.actions.clone();
872 let selected_item = self.selected_item;
873 let element =
874 UniformList::new(self.list.clone(), actions.len(), move |range, items, cx| {
875 let start_ix = range.start;
876 for (ix, action) in actions[range].iter().enumerate() {
877 let item_ix = start_ix + ix;
878 items.push(
879 MouseEventHandler::new::<ActionTag, _, _>(item_ix, cx, |state, _| {
880 let item_style = if item_ix == selected_item {
881 style.autocomplete.selected_item
882 } else if state.hovered {
883 style.autocomplete.hovered_item
884 } else {
885 style.autocomplete.item
886 };
887
888 Text::new(action.lsp_action.title.clone(), style.text.clone())
889 .with_soft_wrap(false)
890 .contained()
891 .with_style(item_style)
892 .boxed()
893 })
894 .with_cursor_style(CursorStyle::PointingHand)
895 .on_mouse_down(move |cx| {
896 cx.dispatch_action(ConfirmCodeAction(Some(item_ix)));
897 })
898 .boxed(),
899 );
900 }
901 })
902 .with_width_from_item(
903 self.actions
904 .iter()
905 .enumerate()
906 .max_by_key(|(_, action)| action.lsp_action.title.chars().count())
907 .map(|(ix, _)| ix),
908 )
909 .contained()
910 .with_style(container_style)
911 .boxed();
912
913 if self.deployed_from_indicator {
914 *cursor_position.column_mut() = 0;
915 }
916
917 (cursor_position, element)
918 }
919}
920
921#[derive(Debug)]
922struct ActiveDiagnosticGroup {
923 primary_range: Range<Anchor>,
924 primary_message: String,
925 blocks: HashMap<BlockId, Diagnostic>,
926 is_valid: bool,
927}
928
929#[derive(Serialize, Deserialize)]
930struct ClipboardSelection {
931 len: usize,
932 is_entire_line: bool,
933}
934
935pub struct NavigationData {
936 anchor: Anchor,
937 offset: usize,
938}
939
940pub struct EditorCreated(pub ViewHandle<Editor>);
941
942impl Editor {
943 pub fn single_line(
944 field_editor_style: Option<GetFieldEditorTheme>,
945 cx: &mut ViewContext<Self>,
946 ) -> Self {
947 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
948 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
949 Self::new(EditorMode::SingleLine, buffer, None, field_editor_style, cx)
950 }
951
952 pub fn auto_height(
953 max_lines: usize,
954 field_editor_style: Option<GetFieldEditorTheme>,
955 cx: &mut ViewContext<Self>,
956 ) -> Self {
957 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
958 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
959 Self::new(
960 EditorMode::AutoHeight { max_lines },
961 buffer,
962 None,
963 field_editor_style,
964 cx,
965 )
966 }
967
968 pub fn for_buffer(
969 buffer: ModelHandle<Buffer>,
970 project: Option<ModelHandle<Project>>,
971 cx: &mut ViewContext<Self>,
972 ) -> Self {
973 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
974 Self::new(EditorMode::Full, buffer, project, None, cx)
975 }
976
977 pub fn for_multibuffer(
978 buffer: ModelHandle<MultiBuffer>,
979 project: Option<ModelHandle<Project>>,
980 cx: &mut ViewContext<Self>,
981 ) -> Self {
982 Self::new(EditorMode::Full, buffer, project, None, cx)
983 }
984
985 pub fn clone(&self, cx: &mut ViewContext<Self>) -> Self {
986 let mut clone = Self::new(
987 self.mode,
988 self.buffer.clone(),
989 self.project.clone(),
990 self.get_field_editor_theme,
991 cx,
992 );
993 clone.scroll_position = self.scroll_position;
994 clone.scroll_top_anchor = self.scroll_top_anchor.clone();
995 clone.searchable = self.searchable;
996 clone
997 }
998
999 fn new(
1000 mode: EditorMode,
1001 buffer: ModelHandle<MultiBuffer>,
1002 project: Option<ModelHandle<Project>>,
1003 get_field_editor_theme: Option<GetFieldEditorTheme>,
1004 cx: &mut ViewContext<Self>,
1005 ) -> Self {
1006 let display_map = cx.add_model(|cx| {
1007 let settings = cx.global::<Settings>();
1008 let style = build_style(&*settings, get_field_editor_theme, None, cx);
1009 DisplayMap::new(
1010 buffer.clone(),
1011 settings.tab_size,
1012 style.text.font_id,
1013 style.text.font_size,
1014 None,
1015 2,
1016 1,
1017 cx,
1018 )
1019 });
1020 cx.observe(&buffer, Self::on_buffer_changed).detach();
1021 cx.subscribe(&buffer, Self::on_buffer_event).detach();
1022 cx.observe(&display_map, Self::on_display_map_changed)
1023 .detach();
1024
1025 let mut this = Self {
1026 handle: cx.weak_handle(),
1027 buffer,
1028 display_map,
1029 selections: Arc::from([]),
1030 pending_selection: Some(PendingSelection {
1031 selection: Selection {
1032 id: 0,
1033 start: Anchor::min(),
1034 end: Anchor::min(),
1035 reversed: false,
1036 goal: SelectionGoal::None,
1037 },
1038 mode: SelectMode::Character,
1039 }),
1040 columnar_selection_tail: None,
1041 next_selection_id: 1,
1042 add_selections_state: None,
1043 select_next_state: None,
1044 selection_history: Default::default(),
1045 autoclose_stack: Default::default(),
1046 snippet_stack: Default::default(),
1047 select_larger_syntax_node_stack: Vec::new(),
1048 active_diagnostics: None,
1049 soft_wrap_mode_override: None,
1050 get_field_editor_theme,
1051 project,
1052 scroll_position: Vector2F::zero(),
1053 scroll_top_anchor: Anchor::min(),
1054 autoscroll_request: None,
1055 focused: false,
1056 show_local_cursors: false,
1057 show_local_selections: true,
1058 blink_epoch: 0,
1059 blinking_paused: false,
1060 mode,
1061 vertical_scroll_margin: 3.0,
1062 placeholder_text: None,
1063 highlighted_rows: None,
1064 background_highlights: Default::default(),
1065 nav_history: None,
1066 context_menu: None,
1067 completion_tasks: Default::default(),
1068 next_completion_id: 0,
1069 available_code_actions: Default::default(),
1070 code_actions_task: Default::default(),
1071 document_highlights_task: Default::default(),
1072 pending_rename: Default::default(),
1073 searchable: true,
1074 override_text_style: None,
1075 cursor_shape: Default::default(),
1076 keymap_context_layers: Default::default(),
1077 input_enabled: true,
1078 leader_replica_id: None,
1079 };
1080 this.end_selection(cx);
1081
1082 let editor_created_event = EditorCreated(cx.handle());
1083 cx.emit_global(editor_created_event);
1084
1085 this
1086 }
1087
1088 pub fn open_new(
1089 workspace: &mut Workspace,
1090 _: &workspace::OpenNew,
1091 cx: &mut ViewContext<Workspace>,
1092 ) {
1093 let project = workspace.project().clone();
1094 if project.read(cx).is_remote() {
1095 cx.propagate_action();
1096 } else if let Some(buffer) = project
1097 .update(cx, |project, cx| project.create_buffer(cx))
1098 .log_err()
1099 {
1100 workspace.add_item(
1101 Box::new(cx.add_view(|cx| Editor::for_buffer(buffer, Some(project.clone()), cx))),
1102 cx,
1103 );
1104 }
1105 }
1106
1107 pub fn replica_id(&self, cx: &AppContext) -> ReplicaId {
1108 self.buffer.read(cx).replica_id()
1109 }
1110
1111 pub fn buffer(&self) -> &ModelHandle<MultiBuffer> {
1112 &self.buffer
1113 }
1114
1115 pub fn title(&self, cx: &AppContext) -> String {
1116 self.buffer().read(cx).title(cx)
1117 }
1118
1119 pub fn snapshot(&mut self, cx: &mut MutableAppContext) -> EditorSnapshot {
1120 EditorSnapshot {
1121 mode: self.mode,
1122 display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
1123 scroll_position: self.scroll_position,
1124 scroll_top_anchor: self.scroll_top_anchor.clone(),
1125 placeholder_text: self.placeholder_text.clone(),
1126 is_focused: self
1127 .handle
1128 .upgrade(cx)
1129 .map_or(false, |handle| handle.is_focused(cx)),
1130 }
1131 }
1132
1133 pub fn language<'a>(&self, cx: &'a AppContext) -> Option<&'a Arc<Language>> {
1134 self.buffer.read(cx).language(cx)
1135 }
1136
1137 fn style(&self, cx: &AppContext) -> EditorStyle {
1138 build_style(
1139 cx.global::<Settings>(),
1140 self.get_field_editor_theme,
1141 self.override_text_style.as_deref(),
1142 cx,
1143 )
1144 }
1145
1146 pub fn mode(&self) -> EditorMode {
1147 self.mode
1148 }
1149
1150 pub fn set_placeholder_text(
1151 &mut self,
1152 placeholder_text: impl Into<Arc<str>>,
1153 cx: &mut ViewContext<Self>,
1154 ) {
1155 self.placeholder_text = Some(placeholder_text.into());
1156 cx.notify();
1157 }
1158
1159 pub fn set_vertical_scroll_margin(&mut self, margin_rows: usize, cx: &mut ViewContext<Self>) {
1160 self.vertical_scroll_margin = margin_rows as f32;
1161 cx.notify();
1162 }
1163
1164 pub fn set_scroll_position(&mut self, scroll_position: Vector2F, cx: &mut ViewContext<Self>) {
1165 self.set_scroll_position_internal(scroll_position, true, cx);
1166 }
1167
1168 fn set_scroll_position_internal(
1169 &mut self,
1170 scroll_position: Vector2F,
1171 local: bool,
1172 cx: &mut ViewContext<Self>,
1173 ) {
1174 let map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1175
1176 if scroll_position.y() == 0. {
1177 self.scroll_top_anchor = Anchor::min();
1178 self.scroll_position = scroll_position;
1179 } else {
1180 let scroll_top_buffer_offset =
1181 DisplayPoint::new(scroll_position.y() as u32, 0).to_offset(&map, Bias::Right);
1182 let anchor = map
1183 .buffer_snapshot
1184 .anchor_at(scroll_top_buffer_offset, Bias::Right);
1185 self.scroll_position = vec2f(
1186 scroll_position.x(),
1187 scroll_position.y() - anchor.to_display_point(&map).row() as f32,
1188 );
1189 self.scroll_top_anchor = anchor;
1190 }
1191
1192 cx.emit(Event::ScrollPositionChanged { local });
1193 cx.notify();
1194 }
1195
1196 fn set_scroll_top_anchor(
1197 &mut self,
1198 anchor: Anchor,
1199 position: Vector2F,
1200 cx: &mut ViewContext<Self>,
1201 ) {
1202 self.scroll_top_anchor = anchor;
1203 self.scroll_position = position;
1204 cx.emit(Event::ScrollPositionChanged { local: false });
1205 cx.notify();
1206 }
1207
1208 pub fn set_cursor_shape(&mut self, cursor_shape: CursorShape, cx: &mut ViewContext<Self>) {
1209 self.cursor_shape = cursor_shape;
1210 cx.notify();
1211 }
1212
1213 pub fn set_clip_at_line_ends(&mut self, clip: bool, cx: &mut ViewContext<Self>) {
1214 self.display_map
1215 .update(cx, |map, _| map.clip_at_line_ends = clip);
1216 }
1217
1218 pub fn set_keymap_context_layer<Tag: 'static>(&mut self, context: gpui::keymap::Context) {
1219 self.keymap_context_layers
1220 .insert(TypeId::of::<Tag>(), context);
1221 }
1222
1223 pub fn remove_keymap_context_layer<Tag: 'static>(&mut self) {
1224 self.keymap_context_layers.remove(&TypeId::of::<Tag>());
1225 }
1226
1227 pub fn set_input_enabled(&mut self, input_enabled: bool) {
1228 self.input_enabled = input_enabled;
1229 }
1230
1231 pub fn scroll_position(&self, cx: &mut ViewContext<Self>) -> Vector2F {
1232 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1233 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor)
1234 }
1235
1236 pub fn clamp_scroll_left(&mut self, max: f32) -> bool {
1237 if max < self.scroll_position.x() {
1238 self.scroll_position.set_x(max);
1239 true
1240 } else {
1241 false
1242 }
1243 }
1244
1245 pub fn autoscroll_vertically(
1246 &mut self,
1247 viewport_height: f32,
1248 line_height: f32,
1249 cx: &mut ViewContext<Self>,
1250 ) -> bool {
1251 let visible_lines = viewport_height / line_height;
1252 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1253 let mut scroll_position =
1254 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor);
1255 let max_scroll_top = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
1256 (display_map.max_point().row() as f32 - visible_lines + 1.).max(0.)
1257 } else {
1258 display_map.max_point().row().saturating_sub(1) as f32
1259 };
1260 if scroll_position.y() > max_scroll_top {
1261 scroll_position.set_y(max_scroll_top);
1262 self.set_scroll_position(scroll_position, cx);
1263 }
1264
1265 let (autoscroll, local) = if let Some(autoscroll) = self.autoscroll_request.take() {
1266 autoscroll
1267 } else {
1268 return false;
1269 };
1270
1271 let first_cursor_top;
1272 let last_cursor_bottom;
1273 if let Some(highlighted_rows) = &self.highlighted_rows {
1274 first_cursor_top = highlighted_rows.start as f32;
1275 last_cursor_bottom = first_cursor_top + 1.;
1276 } else if autoscroll == Autoscroll::Newest {
1277 let newest_selection =
1278 self.newest_selection_with_snapshot::<Point>(&display_map.buffer_snapshot);
1279 first_cursor_top = newest_selection.head().to_display_point(&display_map).row() as f32;
1280 last_cursor_bottom = first_cursor_top + 1.;
1281 } else {
1282 let selections = self.local_selections::<Point>(cx);
1283 first_cursor_top = selections
1284 .first()
1285 .unwrap()
1286 .head()
1287 .to_display_point(&display_map)
1288 .row() as f32;
1289 last_cursor_bottom = selections
1290 .last()
1291 .unwrap()
1292 .head()
1293 .to_display_point(&display_map)
1294 .row() as f32
1295 + 1.0;
1296 }
1297
1298 let margin = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
1299 0.
1300 } else {
1301 ((visible_lines - (last_cursor_bottom - first_cursor_top)) / 2.0).floor()
1302 };
1303 if margin < 0.0 {
1304 return false;
1305 }
1306
1307 match autoscroll {
1308 Autoscroll::Fit | Autoscroll::Newest => {
1309 let margin = margin.min(self.vertical_scroll_margin);
1310 let target_top = (first_cursor_top - margin).max(0.0);
1311 let target_bottom = last_cursor_bottom + margin;
1312 let start_row = scroll_position.y();
1313 let end_row = start_row + visible_lines;
1314
1315 if target_top < start_row {
1316 scroll_position.set_y(target_top);
1317 self.set_scroll_position_internal(scroll_position, local, cx);
1318 } else if target_bottom >= end_row {
1319 scroll_position.set_y(target_bottom - visible_lines);
1320 self.set_scroll_position_internal(scroll_position, local, cx);
1321 }
1322 }
1323 Autoscroll::Center => {
1324 scroll_position.set_y((first_cursor_top - margin).max(0.0));
1325 self.set_scroll_position_internal(scroll_position, local, cx);
1326 }
1327 }
1328
1329 true
1330 }
1331
1332 pub fn autoscroll_horizontally(
1333 &mut self,
1334 start_row: u32,
1335 viewport_width: f32,
1336 scroll_width: f32,
1337 max_glyph_width: f32,
1338 layouts: &[text_layout::Line],
1339 cx: &mut ViewContext<Self>,
1340 ) -> bool {
1341 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1342 let selections = self.local_selections::<Point>(cx);
1343
1344 let mut target_left;
1345 let mut target_right;
1346
1347 if self.highlighted_rows.is_some() {
1348 target_left = 0.0_f32;
1349 target_right = 0.0_f32;
1350 } else {
1351 target_left = std::f32::INFINITY;
1352 target_right = 0.0_f32;
1353 for selection in selections {
1354 let head = selection.head().to_display_point(&display_map);
1355 if head.row() >= start_row && head.row() < start_row + layouts.len() as u32 {
1356 let start_column = head.column().saturating_sub(3);
1357 let end_column = cmp::min(display_map.line_len(head.row()), head.column() + 3);
1358 target_left = target_left.min(
1359 layouts[(head.row() - start_row) as usize]
1360 .x_for_index(start_column as usize),
1361 );
1362 target_right = target_right.max(
1363 layouts[(head.row() - start_row) as usize].x_for_index(end_column as usize)
1364 + max_glyph_width,
1365 );
1366 }
1367 }
1368 }
1369
1370 target_right = target_right.min(scroll_width);
1371
1372 if target_right - target_left > viewport_width {
1373 return false;
1374 }
1375
1376 let scroll_left = self.scroll_position.x() * max_glyph_width;
1377 let scroll_right = scroll_left + viewport_width;
1378
1379 if target_left < scroll_left {
1380 self.scroll_position.set_x(target_left / max_glyph_width);
1381 true
1382 } else if target_right > scroll_right {
1383 self.scroll_position
1384 .set_x((target_right - viewport_width) / max_glyph_width);
1385 true
1386 } else {
1387 false
1388 }
1389 }
1390
1391 pub fn replace_selections_with(
1392 &mut self,
1393 cx: &mut ViewContext<Self>,
1394 find_replacement: impl Fn(&DisplaySnapshot) -> DisplayPoint,
1395 ) {
1396 let display_map = self.snapshot(cx);
1397 let cursor = find_replacement(&display_map);
1398 let selection = Selection {
1399 id: post_inc(&mut self.next_selection_id),
1400 start: cursor,
1401 end: cursor,
1402 reversed: false,
1403 goal: SelectionGoal::None,
1404 }
1405 .map(|display_point| display_point.to_point(&display_map));
1406 self.update_selections(vec![selection], None, cx);
1407 }
1408
1409 pub fn move_selections(
1410 &mut self,
1411 cx: &mut ViewContext<Self>,
1412 move_selection: impl Fn(&DisplaySnapshot, &mut Selection<DisplayPoint>),
1413 ) {
1414 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1415 let selections = self
1416 .local_selections::<Point>(cx)
1417 .into_iter()
1418 .map(|selection| {
1419 let mut selection = selection.map(|point| point.to_display_point(&display_map));
1420 move_selection(&display_map, &mut selection);
1421 selection.map(|display_point| display_point.to_point(&display_map))
1422 })
1423 .collect();
1424 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1425 }
1426
1427 pub fn move_selection_heads(
1428 &mut self,
1429 cx: &mut ViewContext<Self>,
1430 update_head: impl Fn(
1431 &DisplaySnapshot,
1432 DisplayPoint,
1433 SelectionGoal,
1434 ) -> (DisplayPoint, SelectionGoal),
1435 ) {
1436 self.move_selections(cx, |map, selection| {
1437 let (new_head, new_goal) = update_head(map, selection.head(), selection.goal);
1438 selection.set_head(new_head, new_goal);
1439 });
1440 }
1441
1442 pub fn move_cursors(
1443 &mut self,
1444 cx: &mut ViewContext<Self>,
1445 update_cursor_position: impl Fn(
1446 &DisplaySnapshot,
1447 DisplayPoint,
1448 SelectionGoal,
1449 ) -> (DisplayPoint, SelectionGoal),
1450 ) {
1451 self.move_selections(cx, |map, selection| {
1452 let (cursor, new_goal) = update_cursor_position(map, selection.head(), selection.goal);
1453 selection.collapse_to(cursor, new_goal)
1454 });
1455 }
1456
1457 fn select(&mut self, Select(phase): &Select, cx: &mut ViewContext<Self>) {
1458 self.hide_context_menu(cx);
1459
1460 match phase {
1461 SelectPhase::Begin {
1462 position,
1463 add,
1464 click_count,
1465 } => self.begin_selection(*position, *add, *click_count, cx),
1466 SelectPhase::BeginColumnar {
1467 position,
1468 overshoot,
1469 } => self.begin_columnar_selection(*position, *overshoot, cx),
1470 SelectPhase::Extend {
1471 position,
1472 click_count,
1473 } => self.extend_selection(*position, *click_count, cx),
1474 SelectPhase::Update {
1475 position,
1476 overshoot,
1477 scroll_position,
1478 } => self.update_selection(*position, *overshoot, *scroll_position, cx),
1479 SelectPhase::End => self.end_selection(cx),
1480 }
1481 }
1482
1483 fn extend_selection(
1484 &mut self,
1485 position: DisplayPoint,
1486 click_count: usize,
1487 cx: &mut ViewContext<Self>,
1488 ) {
1489 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1490 let tail = self
1491 .newest_selection_with_snapshot::<usize>(&display_map.buffer_snapshot)
1492 .tail();
1493 self.begin_selection(position, false, click_count, cx);
1494
1495 let position = position.to_offset(&display_map, Bias::Left);
1496 let tail_anchor = display_map.buffer_snapshot.anchor_before(tail);
1497 let mut pending = self.pending_selection.clone().unwrap();
1498
1499 if position >= tail {
1500 pending.selection.start = tail_anchor.clone();
1501 } else {
1502 pending.selection.end = tail_anchor.clone();
1503 pending.selection.reversed = true;
1504 }
1505
1506 match &mut pending.mode {
1507 SelectMode::Word(range) | SelectMode::Line(range) => {
1508 *range = tail_anchor.clone()..tail_anchor
1509 }
1510 _ => {}
1511 }
1512
1513 self.set_selections(self.selections.clone(), Some(pending), true, cx);
1514 }
1515
1516 fn begin_selection(
1517 &mut self,
1518 position: DisplayPoint,
1519 add: bool,
1520 click_count: usize,
1521 cx: &mut ViewContext<Self>,
1522 ) {
1523 if !self.focused {
1524 cx.focus_self();
1525 cx.emit(Event::Activate);
1526 }
1527
1528 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1529 let buffer = &display_map.buffer_snapshot;
1530 let newest_selection = self.newest_anchor_selection().clone();
1531
1532 let start;
1533 let end;
1534 let mode;
1535 match click_count {
1536 1 => {
1537 start = buffer.anchor_before(position.to_point(&display_map));
1538 end = start.clone();
1539 mode = SelectMode::Character;
1540 }
1541 2 => {
1542 let range = movement::surrounding_word(&display_map, position);
1543 start = buffer.anchor_before(range.start.to_point(&display_map));
1544 end = buffer.anchor_before(range.end.to_point(&display_map));
1545 mode = SelectMode::Word(start.clone()..end.clone());
1546 }
1547 3 => {
1548 let position = display_map
1549 .clip_point(position, Bias::Left)
1550 .to_point(&display_map);
1551 let line_start = display_map.prev_line_boundary(position).0;
1552 let next_line_start = buffer.clip_point(
1553 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1554 Bias::Left,
1555 );
1556 start = buffer.anchor_before(line_start);
1557 end = buffer.anchor_before(next_line_start);
1558 mode = SelectMode::Line(start.clone()..end.clone());
1559 }
1560 _ => {
1561 start = buffer.anchor_before(0);
1562 end = buffer.anchor_before(buffer.len());
1563 mode = SelectMode::All;
1564 }
1565 }
1566
1567 let selection = Selection {
1568 id: post_inc(&mut self.next_selection_id),
1569 start,
1570 end,
1571 reversed: false,
1572 goal: SelectionGoal::None,
1573 };
1574
1575 let mut selections;
1576 if add {
1577 selections = self.selections.clone();
1578 // Remove the newest selection if it was added due to a previous mouse up
1579 // within this multi-click.
1580 if click_count > 1 {
1581 selections = self
1582 .selections
1583 .iter()
1584 .filter(|selection| selection.id != newest_selection.id)
1585 .cloned()
1586 .collect();
1587 }
1588 } else {
1589 selections = Arc::from([]);
1590 }
1591 self.set_selections(
1592 selections,
1593 Some(PendingSelection { selection, mode }),
1594 true,
1595 cx,
1596 );
1597
1598 cx.notify();
1599 }
1600
1601 fn begin_columnar_selection(
1602 &mut self,
1603 position: DisplayPoint,
1604 overshoot: u32,
1605 cx: &mut ViewContext<Self>,
1606 ) {
1607 if !self.focused {
1608 cx.focus_self();
1609 cx.emit(Event::Activate);
1610 }
1611
1612 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1613 let tail = self
1614 .newest_selection_with_snapshot::<Point>(&display_map.buffer_snapshot)
1615 .tail();
1616 self.columnar_selection_tail = Some(display_map.buffer_snapshot.anchor_before(tail));
1617
1618 self.select_columns(
1619 tail.to_display_point(&display_map),
1620 position,
1621 overshoot,
1622 &display_map,
1623 cx,
1624 );
1625 }
1626
1627 fn update_selection(
1628 &mut self,
1629 position: DisplayPoint,
1630 overshoot: u32,
1631 scroll_position: Vector2F,
1632 cx: &mut ViewContext<Self>,
1633 ) {
1634 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1635
1636 if let Some(tail) = self.columnar_selection_tail.as_ref() {
1637 let tail = tail.to_display_point(&display_map);
1638 self.select_columns(tail, position, overshoot, &display_map, cx);
1639 } else if let Some(mut pending) = self.pending_selection.clone() {
1640 let buffer = self.buffer.read(cx).snapshot(cx);
1641 let head;
1642 let tail;
1643 match &pending.mode {
1644 SelectMode::Character => {
1645 head = position.to_point(&display_map);
1646 tail = pending.selection.tail().to_point(&buffer);
1647 }
1648 SelectMode::Word(original_range) => {
1649 let original_display_range = original_range.start.to_display_point(&display_map)
1650 ..original_range.end.to_display_point(&display_map);
1651 let original_buffer_range = original_display_range.start.to_point(&display_map)
1652 ..original_display_range.end.to_point(&display_map);
1653 if movement::is_inside_word(&display_map, position)
1654 || original_display_range.contains(&position)
1655 {
1656 let word_range = movement::surrounding_word(&display_map, position);
1657 if word_range.start < original_display_range.start {
1658 head = word_range.start.to_point(&display_map);
1659 } else {
1660 head = word_range.end.to_point(&display_map);
1661 }
1662 } else {
1663 head = position.to_point(&display_map);
1664 }
1665
1666 if head <= original_buffer_range.start {
1667 tail = original_buffer_range.end;
1668 } else {
1669 tail = original_buffer_range.start;
1670 }
1671 }
1672 SelectMode::Line(original_range) => {
1673 let original_range = original_range.to_point(&display_map.buffer_snapshot);
1674
1675 let position = display_map
1676 .clip_point(position, Bias::Left)
1677 .to_point(&display_map);
1678 let line_start = display_map.prev_line_boundary(position).0;
1679 let next_line_start = buffer.clip_point(
1680 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1681 Bias::Left,
1682 );
1683
1684 if line_start < original_range.start {
1685 head = line_start
1686 } else {
1687 head = next_line_start
1688 }
1689
1690 if head <= original_range.start {
1691 tail = original_range.end;
1692 } else {
1693 tail = original_range.start;
1694 }
1695 }
1696 SelectMode::All => {
1697 return;
1698 }
1699 };
1700
1701 if head < tail {
1702 pending.selection.start = buffer.anchor_before(head);
1703 pending.selection.end = buffer.anchor_before(tail);
1704 pending.selection.reversed = true;
1705 } else {
1706 pending.selection.start = buffer.anchor_before(tail);
1707 pending.selection.end = buffer.anchor_before(head);
1708 pending.selection.reversed = false;
1709 }
1710 self.set_selections(self.selections.clone(), Some(pending), true, cx);
1711 } else {
1712 log::error!("update_selection dispatched with no pending selection");
1713 return;
1714 }
1715
1716 self.set_scroll_position(scroll_position, cx);
1717 cx.notify();
1718 }
1719
1720 fn end_selection(&mut self, cx: &mut ViewContext<Self>) {
1721 self.columnar_selection_tail.take();
1722 if self.pending_selection.is_some() {
1723 let selections = self.local_selections::<usize>(cx);
1724 self.update_selections(selections, None, cx);
1725 }
1726 }
1727
1728 fn select_columns(
1729 &mut self,
1730 tail: DisplayPoint,
1731 head: DisplayPoint,
1732 overshoot: u32,
1733 display_map: &DisplaySnapshot,
1734 cx: &mut ViewContext<Self>,
1735 ) {
1736 let start_row = cmp::min(tail.row(), head.row());
1737 let end_row = cmp::max(tail.row(), head.row());
1738 let start_column = cmp::min(tail.column(), head.column() + overshoot);
1739 let end_column = cmp::max(tail.column(), head.column() + overshoot);
1740 let reversed = start_column < tail.column();
1741
1742 let selections = (start_row..=end_row)
1743 .filter_map(|row| {
1744 if start_column <= display_map.line_len(row) && !display_map.is_block_line(row) {
1745 let start = display_map
1746 .clip_point(DisplayPoint::new(row, start_column), Bias::Left)
1747 .to_point(&display_map);
1748 let end = display_map
1749 .clip_point(DisplayPoint::new(row, end_column), Bias::Right)
1750 .to_point(&display_map);
1751 Some(Selection {
1752 id: post_inc(&mut self.next_selection_id),
1753 start,
1754 end,
1755 reversed,
1756 goal: SelectionGoal::None,
1757 })
1758 } else {
1759 None
1760 }
1761 })
1762 .collect::<Vec<_>>();
1763
1764 self.update_selections(selections, None, cx);
1765 cx.notify();
1766 }
1767
1768 pub fn is_selecting(&self) -> bool {
1769 self.pending_selection.is_some() || self.columnar_selection_tail.is_some()
1770 }
1771
1772 pub fn cancel(&mut self, _: &Cancel, cx: &mut ViewContext<Self>) {
1773 if self.take_rename(false, cx).is_some() {
1774 return;
1775 }
1776
1777 if self.hide_context_menu(cx).is_some() {
1778 return;
1779 }
1780
1781 if self.snippet_stack.pop().is_some() {
1782 return;
1783 }
1784
1785 if self.mode != EditorMode::Full {
1786 cx.propagate_action();
1787 return;
1788 }
1789
1790 if self.active_diagnostics.is_some() {
1791 self.dismiss_diagnostics(cx);
1792 } else if let Some(pending) = self.pending_selection.clone() {
1793 let mut selections = self.selections.clone();
1794 if selections.is_empty() {
1795 selections = Arc::from([pending.selection]);
1796 }
1797 self.set_selections(selections, None, true, cx);
1798 self.request_autoscroll(Autoscroll::Fit, cx);
1799 } else {
1800 let mut oldest_selection = self.oldest_selection::<usize>(&cx);
1801 if self.selection_count() == 1 {
1802 if oldest_selection.is_empty() {
1803 cx.propagate_action();
1804 return;
1805 }
1806
1807 oldest_selection.start = oldest_selection.head().clone();
1808 oldest_selection.end = oldest_selection.head().clone();
1809 }
1810 self.update_selections(vec![oldest_selection], Some(Autoscroll::Fit), cx);
1811 }
1812 }
1813
1814 #[cfg(any(test, feature = "test-support"))]
1815 pub fn selected_ranges<D: TextDimension + Ord + Sub<D, Output = D>>(
1816 &self,
1817 cx: &AppContext,
1818 ) -> Vec<Range<D>> {
1819 self.local_selections::<D>(cx)
1820 .iter()
1821 .map(|s| {
1822 if s.reversed {
1823 s.end.clone()..s.start.clone()
1824 } else {
1825 s.start.clone()..s.end.clone()
1826 }
1827 })
1828 .collect()
1829 }
1830
1831 #[cfg(any(test, feature = "test-support"))]
1832 pub fn selected_display_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
1833 let display_map = self
1834 .display_map
1835 .update(cx, |display_map, cx| display_map.snapshot(cx));
1836 self.selections
1837 .iter()
1838 .chain(
1839 self.pending_selection
1840 .as_ref()
1841 .map(|pending| &pending.selection),
1842 )
1843 .map(|s| {
1844 if s.reversed {
1845 s.end.to_display_point(&display_map)..s.start.to_display_point(&display_map)
1846 } else {
1847 s.start.to_display_point(&display_map)..s.end.to_display_point(&display_map)
1848 }
1849 })
1850 .collect()
1851 }
1852
1853 pub fn select_ranges<I, T>(
1854 &mut self,
1855 ranges: I,
1856 autoscroll: Option<Autoscroll>,
1857 cx: &mut ViewContext<Self>,
1858 ) where
1859 I: IntoIterator<Item = Range<T>>,
1860 T: ToOffset,
1861 {
1862 let buffer = self.buffer.read(cx).snapshot(cx);
1863 let selections = ranges
1864 .into_iter()
1865 .map(|range| {
1866 let mut start = range.start.to_offset(&buffer);
1867 let mut end = range.end.to_offset(&buffer);
1868 let reversed = if start > end {
1869 mem::swap(&mut start, &mut end);
1870 true
1871 } else {
1872 false
1873 };
1874 Selection {
1875 id: post_inc(&mut self.next_selection_id),
1876 start,
1877 end,
1878 reversed,
1879 goal: SelectionGoal::None,
1880 }
1881 })
1882 .collect::<Vec<_>>();
1883 self.update_selections(selections, autoscroll, cx);
1884 }
1885
1886 #[cfg(any(test, feature = "test-support"))]
1887 pub fn select_display_ranges<'a, T>(&mut self, ranges: T, cx: &mut ViewContext<Self>)
1888 where
1889 T: IntoIterator<Item = &'a Range<DisplayPoint>>,
1890 {
1891 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1892 let selections = ranges
1893 .into_iter()
1894 .map(|range| {
1895 let mut start = range.start;
1896 let mut end = range.end;
1897 let reversed = if start > end {
1898 mem::swap(&mut start, &mut end);
1899 true
1900 } else {
1901 false
1902 };
1903 Selection {
1904 id: post_inc(&mut self.next_selection_id),
1905 start: start.to_point(&display_map),
1906 end: end.to_point(&display_map),
1907 reversed,
1908 goal: SelectionGoal::None,
1909 }
1910 })
1911 .collect();
1912 self.update_selections(selections, None, cx);
1913 }
1914
1915 pub fn handle_input(&mut self, action: &Input, cx: &mut ViewContext<Self>) {
1916 if !self.input_enabled {
1917 cx.propagate_action();
1918 return;
1919 }
1920
1921 let text = action.0.as_ref();
1922 if !self.skip_autoclose_end(text, cx) {
1923 self.transact(cx, |this, cx| {
1924 if !this.surround_with_bracket_pair(text, cx) {
1925 this.insert(text, cx);
1926 this.autoclose_bracket_pairs(cx);
1927 }
1928 });
1929 self.trigger_completion_on_input(text, cx);
1930 }
1931 }
1932
1933 pub fn newline(&mut self, _: &Newline, cx: &mut ViewContext<Self>) {
1934 self.transact(cx, |this, cx| {
1935 let mut old_selections = SmallVec::<[_; 32]>::new();
1936 {
1937 let selections = this.local_selections::<usize>(cx);
1938 let buffer = this.buffer.read(cx).snapshot(cx);
1939 for selection in selections.iter() {
1940 let start_point = selection.start.to_point(&buffer);
1941 let indent = buffer
1942 .indent_column_for_line(start_point.row)
1943 .min(start_point.column);
1944 let start = selection.start;
1945 let end = selection.end;
1946
1947 let mut insert_extra_newline = false;
1948 if let Some(language) = buffer.language() {
1949 let leading_whitespace_len = buffer
1950 .reversed_chars_at(start)
1951 .take_while(|c| c.is_whitespace() && *c != '\n')
1952 .map(|c| c.len_utf8())
1953 .sum::<usize>();
1954
1955 let trailing_whitespace_len = buffer
1956 .chars_at(end)
1957 .take_while(|c| c.is_whitespace() && *c != '\n')
1958 .map(|c| c.len_utf8())
1959 .sum::<usize>();
1960
1961 insert_extra_newline = language.brackets().iter().any(|pair| {
1962 let pair_start = pair.start.trim_end();
1963 let pair_end = pair.end.trim_start();
1964
1965 pair.newline
1966 && buffer.contains_str_at(end + trailing_whitespace_len, pair_end)
1967 && buffer.contains_str_at(
1968 (start - leading_whitespace_len)
1969 .saturating_sub(pair_start.len()),
1970 pair_start,
1971 )
1972 });
1973 }
1974
1975 old_selections.push((
1976 selection.id,
1977 buffer.anchor_after(end),
1978 start..end,
1979 indent,
1980 insert_extra_newline,
1981 ));
1982 }
1983 }
1984
1985 this.buffer.update(cx, |buffer, cx| {
1986 let mut delta = 0_isize;
1987 let mut pending_edit: Option<PendingEdit> = None;
1988 for (_, _, range, indent, insert_extra_newline) in &old_selections {
1989 if pending_edit.as_ref().map_or(false, |pending| {
1990 pending.indent != *indent
1991 || pending.insert_extra_newline != *insert_extra_newline
1992 }) {
1993 let pending = pending_edit.take().unwrap();
1994 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1995 new_text.push('\n');
1996 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1997 if pending.insert_extra_newline {
1998 new_text = new_text.repeat(2);
1999 }
2000 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
2001 delta += pending.delta;
2002 }
2003
2004 let start = (range.start as isize + delta) as usize;
2005 let end = (range.end as isize + delta) as usize;
2006 let mut text_len = *indent as usize + 1;
2007 if *insert_extra_newline {
2008 text_len *= 2;
2009 }
2010
2011 let pending = pending_edit.get_or_insert_with(Default::default);
2012 pending.delta += text_len as isize - (end - start) as isize;
2013 pending.indent = *indent;
2014 pending.insert_extra_newline = *insert_extra_newline;
2015 pending.ranges.push(start..end);
2016 }
2017
2018 let pending = pending_edit.unwrap();
2019 let mut new_text = String::with_capacity(1 + pending.indent as usize);
2020 new_text.push('\n');
2021 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
2022 if pending.insert_extra_newline {
2023 new_text = new_text.repeat(2);
2024 }
2025 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
2026
2027 let buffer = buffer.read(cx);
2028 this.selections = this
2029 .selections
2030 .iter()
2031 .cloned()
2032 .zip(old_selections)
2033 .map(
2034 |(mut new_selection, (_, end_anchor, _, _, insert_extra_newline))| {
2035 let mut cursor = end_anchor.to_point(&buffer);
2036 if insert_extra_newline {
2037 cursor.row -= 1;
2038 cursor.column = buffer.line_len(cursor.row);
2039 }
2040 let anchor = buffer.anchor_after(cursor);
2041 new_selection.start = anchor.clone();
2042 new_selection.end = anchor;
2043 new_selection
2044 },
2045 )
2046 .collect();
2047 });
2048
2049 this.request_autoscroll(Autoscroll::Fit, cx);
2050 });
2051
2052 #[derive(Default)]
2053 struct PendingEdit {
2054 indent: u32,
2055 insert_extra_newline: bool,
2056 delta: isize,
2057 ranges: SmallVec<[Range<usize>; 32]>,
2058 }
2059 }
2060
2061 pub fn insert(&mut self, text: &str, cx: &mut ViewContext<Self>) {
2062 self.transact(cx, |this, cx| {
2063 let old_selections = this.local_selections::<usize>(cx);
2064 let selection_anchors = this.buffer.update(cx, |buffer, cx| {
2065 let anchors = {
2066 let snapshot = buffer.read(cx);
2067 old_selections
2068 .iter()
2069 .map(|s| (s.id, s.goal, snapshot.anchor_after(s.end)))
2070 .collect::<Vec<_>>()
2071 };
2072 let edit_ranges = old_selections.iter().map(|s| s.start..s.end);
2073 buffer.edit_with_autoindent(edit_ranges, text, cx);
2074 anchors
2075 });
2076
2077 let selections = {
2078 let snapshot = this.buffer.read(cx).read(cx);
2079 selection_anchors
2080 .into_iter()
2081 .map(|(id, goal, position)| {
2082 let position = position.to_offset(&snapshot);
2083 Selection {
2084 id,
2085 start: position,
2086 end: position,
2087 goal,
2088 reversed: false,
2089 }
2090 })
2091 .collect()
2092 };
2093 this.update_selections(selections, Some(Autoscroll::Fit), cx);
2094 });
2095 }
2096
2097 fn trigger_completion_on_input(&mut self, text: &str, cx: &mut ViewContext<Self>) {
2098 let selection = self.newest_anchor_selection();
2099 if self
2100 .buffer
2101 .read(cx)
2102 .is_completion_trigger(selection.head(), text, cx)
2103 {
2104 self.show_completions(&ShowCompletions, cx);
2105 } else {
2106 self.hide_context_menu(cx);
2107 }
2108 }
2109
2110 fn surround_with_bracket_pair(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
2111 let snapshot = self.buffer.read(cx).snapshot(cx);
2112 if let Some(pair) = snapshot
2113 .language()
2114 .and_then(|language| language.brackets().iter().find(|b| b.start == text))
2115 .cloned()
2116 {
2117 if self
2118 .local_selections::<usize>(cx)
2119 .iter()
2120 .any(|selection| selection.is_empty())
2121 {
2122 false
2123 } else {
2124 let mut selections = self.selections.to_vec();
2125 for selection in &mut selections {
2126 selection.end = selection.end.bias_left(&snapshot);
2127 }
2128 drop(snapshot);
2129
2130 self.buffer.update(cx, |buffer, cx| {
2131 buffer.edit(
2132 selections.iter().map(|s| s.start.clone()..s.start.clone()),
2133 &pair.start,
2134 cx,
2135 );
2136 buffer.edit(
2137 selections.iter().map(|s| s.end.clone()..s.end.clone()),
2138 &pair.end,
2139 cx,
2140 );
2141 });
2142
2143 let snapshot = self.buffer.read(cx).read(cx);
2144 for selection in &mut selections {
2145 selection.end = selection.end.bias_right(&snapshot);
2146 }
2147 drop(snapshot);
2148
2149 self.set_selections(selections.into(), None, true, cx);
2150 true
2151 }
2152 } else {
2153 false
2154 }
2155 }
2156
2157 fn autoclose_bracket_pairs(&mut self, cx: &mut ViewContext<Self>) {
2158 let selections = self.local_selections::<usize>(cx);
2159 let mut bracket_pair_state = None;
2160 let mut new_selections = None;
2161 self.buffer.update(cx, |buffer, cx| {
2162 let mut snapshot = buffer.snapshot(cx);
2163 let left_biased_selections = selections
2164 .iter()
2165 .map(|selection| Selection {
2166 id: selection.id,
2167 start: snapshot.anchor_before(selection.start),
2168 end: snapshot.anchor_before(selection.end),
2169 reversed: selection.reversed,
2170 goal: selection.goal,
2171 })
2172 .collect::<Vec<_>>();
2173
2174 let autoclose_pair = snapshot.language().and_then(|language| {
2175 let first_selection_start = selections.first().unwrap().start;
2176 let pair = language.brackets().iter().find(|pair| {
2177 snapshot.contains_str_at(
2178 first_selection_start.saturating_sub(pair.start.len()),
2179 &pair.start,
2180 )
2181 });
2182 pair.and_then(|pair| {
2183 let should_autoclose = selections.iter().all(|selection| {
2184 // Ensure all selections are parked at the end of a pair start.
2185 if snapshot.contains_str_at(
2186 selection.start.saturating_sub(pair.start.len()),
2187 &pair.start,
2188 ) {
2189 snapshot
2190 .chars_at(selection.start)
2191 .next()
2192 .map_or(true, |c| language.should_autoclose_before(c))
2193 } else {
2194 false
2195 }
2196 });
2197
2198 if should_autoclose {
2199 Some(pair.clone())
2200 } else {
2201 None
2202 }
2203 })
2204 });
2205
2206 if let Some(pair) = autoclose_pair {
2207 let selection_ranges = selections
2208 .iter()
2209 .map(|selection| {
2210 let start = selection.start.to_offset(&snapshot);
2211 start..start
2212 })
2213 .collect::<SmallVec<[_; 32]>>();
2214
2215 buffer.edit(selection_ranges, &pair.end, cx);
2216 snapshot = buffer.snapshot(cx);
2217
2218 new_selections = Some(
2219 self.resolve_selections::<usize, _>(left_biased_selections.iter(), &snapshot)
2220 .collect::<Vec<_>>(),
2221 );
2222
2223 if pair.end.len() == 1 {
2224 let mut delta = 0;
2225 bracket_pair_state = Some(BracketPairState {
2226 ranges: selections
2227 .iter()
2228 .map(move |selection| {
2229 let offset = selection.start + delta;
2230 delta += 1;
2231 snapshot.anchor_before(offset)..snapshot.anchor_after(offset)
2232 })
2233 .collect(),
2234 pair,
2235 });
2236 }
2237 }
2238 });
2239
2240 if let Some(new_selections) = new_selections {
2241 self.update_selections(new_selections, None, cx);
2242 }
2243 if let Some(bracket_pair_state) = bracket_pair_state {
2244 self.autoclose_stack.push(bracket_pair_state);
2245 }
2246 }
2247
2248 fn skip_autoclose_end(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
2249 let old_selections = self.local_selections::<usize>(cx);
2250 let autoclose_pair = if let Some(autoclose_pair) = self.autoclose_stack.last() {
2251 autoclose_pair
2252 } else {
2253 return false;
2254 };
2255 if text != autoclose_pair.pair.end {
2256 return false;
2257 }
2258
2259 debug_assert_eq!(old_selections.len(), autoclose_pair.ranges.len());
2260
2261 let buffer = self.buffer.read(cx).snapshot(cx);
2262 if old_selections
2263 .iter()
2264 .zip(autoclose_pair.ranges.iter().map(|r| r.to_offset(&buffer)))
2265 .all(|(selection, autoclose_range)| {
2266 let autoclose_range_end = autoclose_range.end.to_offset(&buffer);
2267 selection.is_empty() && selection.start == autoclose_range_end
2268 })
2269 {
2270 let new_selections = old_selections
2271 .into_iter()
2272 .map(|selection| {
2273 let cursor = selection.start + 1;
2274 Selection {
2275 id: selection.id,
2276 start: cursor,
2277 end: cursor,
2278 reversed: false,
2279 goal: SelectionGoal::None,
2280 }
2281 })
2282 .collect();
2283 self.autoclose_stack.pop();
2284 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2285 true
2286 } else {
2287 false
2288 }
2289 }
2290
2291 fn completion_query(buffer: &MultiBufferSnapshot, position: impl ToOffset) -> Option<String> {
2292 let offset = position.to_offset(buffer);
2293 let (word_range, kind) = buffer.surrounding_word(offset);
2294 if offset > word_range.start && kind == Some(CharKind::Word) {
2295 Some(
2296 buffer
2297 .text_for_range(word_range.start..offset)
2298 .collect::<String>(),
2299 )
2300 } else {
2301 None
2302 }
2303 }
2304
2305 fn show_completions(&mut self, _: &ShowCompletions, cx: &mut ViewContext<Self>) {
2306 if self.pending_rename.is_some() {
2307 return;
2308 }
2309
2310 let project = if let Some(project) = self.project.clone() {
2311 project
2312 } else {
2313 return;
2314 };
2315
2316 let position = self.newest_anchor_selection().head();
2317 let (buffer, buffer_position) = if let Some(output) = self
2318 .buffer
2319 .read(cx)
2320 .text_anchor_for_position(position.clone(), cx)
2321 {
2322 output
2323 } else {
2324 return;
2325 };
2326
2327 let query = Self::completion_query(&self.buffer.read(cx).read(cx), position.clone());
2328 let completions = project.update(cx, |project, cx| {
2329 project.completions(&buffer, buffer_position.clone(), cx)
2330 });
2331
2332 let id = post_inc(&mut self.next_completion_id);
2333 let task = cx.spawn_weak(|this, mut cx| {
2334 async move {
2335 let completions = completions.await?;
2336 if completions.is_empty() {
2337 return Ok(());
2338 }
2339
2340 let mut menu = CompletionsMenu {
2341 id,
2342 initial_position: position,
2343 match_candidates: completions
2344 .iter()
2345 .enumerate()
2346 .map(|(id, completion)| {
2347 StringMatchCandidate::new(
2348 id,
2349 completion.label.text[completion.label.filter_range.clone()].into(),
2350 )
2351 })
2352 .collect(),
2353 buffer,
2354 completions: completions.into(),
2355 matches: Vec::new().into(),
2356 selected_item: 0,
2357 list: Default::default(),
2358 };
2359
2360 menu.filter(query.as_deref(), cx.background()).await;
2361
2362 if let Some(this) = this.upgrade(&cx) {
2363 this.update(&mut cx, |this, cx| {
2364 match this.context_menu.as_ref() {
2365 None => {}
2366 Some(ContextMenu::Completions(prev_menu)) => {
2367 if prev_menu.id > menu.id {
2368 return;
2369 }
2370 }
2371 _ => return,
2372 }
2373
2374 this.completion_tasks.retain(|(id, _)| *id > menu.id);
2375 if this.focused {
2376 this.show_context_menu(ContextMenu::Completions(menu), cx);
2377 }
2378
2379 cx.notify();
2380 });
2381 }
2382 Ok::<_, anyhow::Error>(())
2383 }
2384 .log_err()
2385 });
2386 self.completion_tasks.push((id, task));
2387 }
2388
2389 pub fn confirm_completion(
2390 &mut self,
2391 ConfirmCompletion(completion_ix): &ConfirmCompletion,
2392 cx: &mut ViewContext<Self>,
2393 ) -> Option<Task<Result<()>>> {
2394 use language::ToOffset as _;
2395
2396 let completions_menu = if let ContextMenu::Completions(menu) = self.hide_context_menu(cx)? {
2397 menu
2398 } else {
2399 return None;
2400 };
2401
2402 let mat = completions_menu
2403 .matches
2404 .get(completion_ix.unwrap_or(completions_menu.selected_item))?;
2405 let buffer_handle = completions_menu.buffer;
2406 let completion = completions_menu.completions.get(mat.candidate_id)?;
2407
2408 let snippet;
2409 let text;
2410 if completion.is_snippet() {
2411 snippet = Some(Snippet::parse(&completion.new_text).log_err()?);
2412 text = snippet.as_ref().unwrap().text.clone();
2413 } else {
2414 snippet = None;
2415 text = completion.new_text.clone();
2416 };
2417 let buffer = buffer_handle.read(cx);
2418 let old_range = completion.old_range.to_offset(&buffer);
2419 let old_text = buffer.text_for_range(old_range.clone()).collect::<String>();
2420
2421 let selections = self.local_selections::<usize>(cx);
2422 let newest_selection = self.newest_anchor_selection();
2423 if newest_selection.start.buffer_id != Some(buffer_handle.id()) {
2424 return None;
2425 }
2426
2427 let lookbehind = newest_selection
2428 .start
2429 .text_anchor
2430 .to_offset(buffer)
2431 .saturating_sub(old_range.start);
2432 let lookahead = old_range
2433 .end
2434 .saturating_sub(newest_selection.end.text_anchor.to_offset(buffer));
2435 let mut common_prefix_len = old_text
2436 .bytes()
2437 .zip(text.bytes())
2438 .take_while(|(a, b)| a == b)
2439 .count();
2440
2441 let snapshot = self.buffer.read(cx).snapshot(cx);
2442 let mut ranges = Vec::new();
2443 for selection in &selections {
2444 if snapshot.contains_str_at(selection.start.saturating_sub(lookbehind), &old_text) {
2445 let start = selection.start.saturating_sub(lookbehind);
2446 let end = selection.end + lookahead;
2447 ranges.push(start + common_prefix_len..end);
2448 } else {
2449 common_prefix_len = 0;
2450 ranges.clear();
2451 ranges.extend(selections.iter().map(|s| {
2452 if s.id == newest_selection.id {
2453 old_range.clone()
2454 } else {
2455 s.start..s.end
2456 }
2457 }));
2458 break;
2459 }
2460 }
2461 let text = &text[common_prefix_len..];
2462
2463 self.transact(cx, |this, cx| {
2464 if let Some(mut snippet) = snippet {
2465 snippet.text = text.to_string();
2466 for tabstop in snippet.tabstops.iter_mut().flatten() {
2467 tabstop.start -= common_prefix_len as isize;
2468 tabstop.end -= common_prefix_len as isize;
2469 }
2470
2471 this.insert_snippet(&ranges, snippet, cx).log_err();
2472 } else {
2473 this.buffer.update(cx, |buffer, cx| {
2474 buffer.edit_with_autoindent(ranges, text, cx);
2475 });
2476 }
2477 });
2478
2479 let project = self.project.clone()?;
2480 let apply_edits = project.update(cx, |project, cx| {
2481 project.apply_additional_edits_for_completion(
2482 buffer_handle,
2483 completion.clone(),
2484 true,
2485 cx,
2486 )
2487 });
2488 Some(cx.foreground().spawn(async move {
2489 apply_edits.await?;
2490 Ok(())
2491 }))
2492 }
2493
2494 pub fn toggle_code_actions(
2495 &mut self,
2496 &ToggleCodeActions(deployed_from_indicator): &ToggleCodeActions,
2497 cx: &mut ViewContext<Self>,
2498 ) {
2499 if matches!(
2500 self.context_menu.as_ref(),
2501 Some(ContextMenu::CodeActions(_))
2502 ) {
2503 self.context_menu.take();
2504 cx.notify();
2505 return;
2506 }
2507
2508 let mut task = self.code_actions_task.take();
2509 cx.spawn_weak(|this, mut cx| async move {
2510 while let Some(prev_task) = task {
2511 prev_task.await;
2512 task = this
2513 .upgrade(&cx)
2514 .and_then(|this| this.update(&mut cx, |this, _| this.code_actions_task.take()));
2515 }
2516
2517 if let Some(this) = this.upgrade(&cx) {
2518 this.update(&mut cx, |this, cx| {
2519 if this.focused {
2520 if let Some((buffer, actions)) = this.available_code_actions.clone() {
2521 this.show_context_menu(
2522 ContextMenu::CodeActions(CodeActionsMenu {
2523 buffer,
2524 actions,
2525 selected_item: Default::default(),
2526 list: Default::default(),
2527 deployed_from_indicator,
2528 }),
2529 cx,
2530 );
2531 }
2532 }
2533 })
2534 }
2535 Ok::<_, anyhow::Error>(())
2536 })
2537 .detach_and_log_err(cx);
2538 }
2539
2540 pub fn confirm_code_action(
2541 workspace: &mut Workspace,
2542 ConfirmCodeAction(action_ix): &ConfirmCodeAction,
2543 cx: &mut ViewContext<Workspace>,
2544 ) -> Option<Task<Result<()>>> {
2545 let editor = workspace.active_item(cx)?.act_as::<Editor>(cx)?;
2546 let actions_menu = if let ContextMenu::CodeActions(menu) =
2547 editor.update(cx, |editor, cx| editor.hide_context_menu(cx))?
2548 {
2549 menu
2550 } else {
2551 return None;
2552 };
2553 let action_ix = action_ix.unwrap_or(actions_menu.selected_item);
2554 let action = actions_menu.actions.get(action_ix)?.clone();
2555 let title = action.lsp_action.title.clone();
2556 let buffer = actions_menu.buffer;
2557
2558 let apply_code_actions = workspace.project().clone().update(cx, |project, cx| {
2559 project.apply_code_action(buffer, action, true, cx)
2560 });
2561 Some(cx.spawn(|workspace, cx| async move {
2562 let project_transaction = apply_code_actions.await?;
2563 Self::open_project_transaction(editor, workspace, project_transaction, title, cx).await
2564 }))
2565 }
2566
2567 async fn open_project_transaction(
2568 this: ViewHandle<Editor>,
2569 workspace: ViewHandle<Workspace>,
2570 transaction: ProjectTransaction,
2571 title: String,
2572 mut cx: AsyncAppContext,
2573 ) -> Result<()> {
2574 let replica_id = this.read_with(&cx, |this, cx| this.replica_id(cx));
2575
2576 // If the project transaction's edits are all contained within this editor, then
2577 // avoid opening a new editor to display them.
2578 let mut entries = transaction.0.iter();
2579 if let Some((buffer, transaction)) = entries.next() {
2580 if entries.next().is_none() {
2581 let excerpt = this.read_with(&cx, |editor, cx| {
2582 editor
2583 .buffer()
2584 .read(cx)
2585 .excerpt_containing(editor.newest_anchor_selection().head(), cx)
2586 });
2587 if let Some((excerpted_buffer, excerpt_range)) = excerpt {
2588 if excerpted_buffer == *buffer {
2589 let snapshot = buffer.read_with(&cx, |buffer, _| buffer.snapshot());
2590 let excerpt_range = excerpt_range.to_offset(&snapshot);
2591 if snapshot
2592 .edited_ranges_for_transaction(transaction)
2593 .all(|range| {
2594 excerpt_range.start <= range.start && excerpt_range.end >= range.end
2595 })
2596 {
2597 return Ok(());
2598 }
2599 }
2600 }
2601 }
2602 } else {
2603 return Ok(());
2604 }
2605
2606 let mut ranges_to_highlight = Vec::new();
2607 let excerpt_buffer = cx.add_model(|cx| {
2608 let mut multibuffer = MultiBuffer::new(replica_id).with_title(title);
2609 for (buffer, transaction) in &transaction.0 {
2610 let snapshot = buffer.read(cx).snapshot();
2611 ranges_to_highlight.extend(
2612 multibuffer.push_excerpts_with_context_lines(
2613 buffer.clone(),
2614 snapshot
2615 .edited_ranges_for_transaction::<usize>(transaction)
2616 .collect(),
2617 1,
2618 cx,
2619 ),
2620 );
2621 }
2622 multibuffer.push_transaction(&transaction.0);
2623 multibuffer
2624 });
2625
2626 workspace.update(&mut cx, |workspace, cx| {
2627 let project = workspace.project().clone();
2628 let editor =
2629 cx.add_view(|cx| Editor::for_multibuffer(excerpt_buffer, Some(project), cx));
2630 workspace.add_item(Box::new(editor.clone()), cx);
2631 editor.update(cx, |editor, cx| {
2632 let color = editor.style(cx).highlighted_line_background;
2633 editor.highlight_background::<Self>(ranges_to_highlight, color, cx);
2634 });
2635 });
2636
2637 Ok(())
2638 }
2639
2640 fn refresh_code_actions(&mut self, cx: &mut ViewContext<Self>) -> Option<()> {
2641 let project = self.project.as_ref()?;
2642 let buffer = self.buffer.read(cx);
2643 let newest_selection = self.newest_anchor_selection().clone();
2644 let (start_buffer, start) = buffer.text_anchor_for_position(newest_selection.start, cx)?;
2645 let (end_buffer, end) = buffer.text_anchor_for_position(newest_selection.end, cx)?;
2646 if start_buffer != end_buffer {
2647 return None;
2648 }
2649
2650 let actions = project.update(cx, |project, cx| {
2651 project.code_actions(&start_buffer, start..end, cx)
2652 });
2653 self.code_actions_task = Some(cx.spawn_weak(|this, mut cx| async move {
2654 let actions = actions.await;
2655 if let Some(this) = this.upgrade(&cx) {
2656 this.update(&mut cx, |this, cx| {
2657 this.available_code_actions = actions.log_err().and_then(|actions| {
2658 if actions.is_empty() {
2659 None
2660 } else {
2661 Some((start_buffer, actions.into()))
2662 }
2663 });
2664 cx.notify();
2665 })
2666 }
2667 }));
2668 None
2669 }
2670
2671 fn refresh_document_highlights(&mut self, cx: &mut ViewContext<Self>) -> Option<()> {
2672 if self.pending_rename.is_some() {
2673 return None;
2674 }
2675
2676 let project = self.project.as_ref()?;
2677 let buffer = self.buffer.read(cx);
2678 let newest_selection = self.newest_anchor_selection().clone();
2679 let cursor_position = newest_selection.head();
2680 let (cursor_buffer, cursor_buffer_position) =
2681 buffer.text_anchor_for_position(cursor_position.clone(), cx)?;
2682 let (tail_buffer, _) = buffer.text_anchor_for_position(newest_selection.tail(), cx)?;
2683 if cursor_buffer != tail_buffer {
2684 return None;
2685 }
2686
2687 let highlights = project.update(cx, |project, cx| {
2688 project.document_highlights(&cursor_buffer, cursor_buffer_position, cx)
2689 });
2690
2691 self.document_highlights_task = Some(cx.spawn_weak(|this, mut cx| async move {
2692 let highlights = highlights.log_err().await;
2693 if let Some((this, highlights)) = this.upgrade(&cx).zip(highlights) {
2694 this.update(&mut cx, |this, cx| {
2695 if this.pending_rename.is_some() {
2696 return;
2697 }
2698
2699 let buffer_id = cursor_position.buffer_id;
2700 let style = this.style(cx);
2701 let read_background = style.document_highlight_read_background;
2702 let write_background = style.document_highlight_write_background;
2703 let buffer = this.buffer.read(cx);
2704 if !buffer
2705 .text_anchor_for_position(cursor_position, cx)
2706 .map_or(false, |(buffer, _)| buffer == cursor_buffer)
2707 {
2708 return;
2709 }
2710
2711 let cursor_buffer_snapshot = cursor_buffer.read(cx);
2712 let mut write_ranges = Vec::new();
2713 let mut read_ranges = Vec::new();
2714 for highlight in highlights {
2715 for (excerpt_id, excerpt_range) in
2716 buffer.excerpts_for_buffer(&cursor_buffer, cx)
2717 {
2718 let start = highlight
2719 .range
2720 .start
2721 .max(&excerpt_range.start, cursor_buffer_snapshot);
2722 let end = highlight
2723 .range
2724 .end
2725 .min(&excerpt_range.end, cursor_buffer_snapshot);
2726 if start.cmp(&end, cursor_buffer_snapshot).is_ge() {
2727 continue;
2728 }
2729
2730 let range = Anchor {
2731 buffer_id,
2732 excerpt_id: excerpt_id.clone(),
2733 text_anchor: start,
2734 }..Anchor {
2735 buffer_id,
2736 excerpt_id,
2737 text_anchor: end,
2738 };
2739 if highlight.kind == lsp::DocumentHighlightKind::WRITE {
2740 write_ranges.push(range);
2741 } else {
2742 read_ranges.push(range);
2743 }
2744 }
2745 }
2746
2747 this.highlight_background::<DocumentHighlightRead>(
2748 read_ranges,
2749 read_background,
2750 cx,
2751 );
2752 this.highlight_background::<DocumentHighlightWrite>(
2753 write_ranges,
2754 write_background,
2755 cx,
2756 );
2757 cx.notify();
2758 });
2759 }
2760 }));
2761 None
2762 }
2763
2764 pub fn render_code_actions_indicator(
2765 &self,
2766 style: &EditorStyle,
2767 cx: &mut ViewContext<Self>,
2768 ) -> Option<ElementBox> {
2769 if self.available_code_actions.is_some() {
2770 enum Tag {}
2771 Some(
2772 MouseEventHandler::new::<Tag, _, _>(0, cx, |_, _| {
2773 Svg::new("icons/zap.svg")
2774 .with_color(style.code_actions_indicator)
2775 .boxed()
2776 })
2777 .with_cursor_style(CursorStyle::PointingHand)
2778 .with_padding(Padding::uniform(3.))
2779 .on_mouse_down(|cx| {
2780 cx.dispatch_action(ToggleCodeActions(true));
2781 })
2782 .boxed(),
2783 )
2784 } else {
2785 None
2786 }
2787 }
2788
2789 pub fn context_menu_visible(&self) -> bool {
2790 self.context_menu
2791 .as_ref()
2792 .map_or(false, |menu| menu.visible())
2793 }
2794
2795 pub fn render_context_menu(
2796 &self,
2797 cursor_position: DisplayPoint,
2798 style: EditorStyle,
2799 cx: &AppContext,
2800 ) -> Option<(DisplayPoint, ElementBox)> {
2801 self.context_menu
2802 .as_ref()
2803 .map(|menu| menu.render(cursor_position, style, cx))
2804 }
2805
2806 fn show_context_menu(&mut self, menu: ContextMenu, cx: &mut ViewContext<Self>) {
2807 if !matches!(menu, ContextMenu::Completions(_)) {
2808 self.completion_tasks.clear();
2809 }
2810 self.context_menu = Some(menu);
2811 cx.notify();
2812 }
2813
2814 fn hide_context_menu(&mut self, cx: &mut ViewContext<Self>) -> Option<ContextMenu> {
2815 cx.notify();
2816 self.completion_tasks.clear();
2817 self.context_menu.take()
2818 }
2819
2820 pub fn insert_snippet(
2821 &mut self,
2822 insertion_ranges: &[Range<usize>],
2823 snippet: Snippet,
2824 cx: &mut ViewContext<Self>,
2825 ) -> Result<()> {
2826 let tabstops = self.buffer.update(cx, |buffer, cx| {
2827 buffer.edit_with_autoindent(insertion_ranges.iter().cloned(), &snippet.text, cx);
2828
2829 let snapshot = &*buffer.read(cx);
2830 let snippet = &snippet;
2831 snippet
2832 .tabstops
2833 .iter()
2834 .map(|tabstop| {
2835 let mut tabstop_ranges = tabstop
2836 .iter()
2837 .flat_map(|tabstop_range| {
2838 let mut delta = 0 as isize;
2839 insertion_ranges.iter().map(move |insertion_range| {
2840 let insertion_start = insertion_range.start as isize + delta;
2841 delta +=
2842 snippet.text.len() as isize - insertion_range.len() as isize;
2843
2844 let start = snapshot.anchor_before(
2845 (insertion_start + tabstop_range.start) as usize,
2846 );
2847 let end = snapshot
2848 .anchor_after((insertion_start + tabstop_range.end) as usize);
2849 start..end
2850 })
2851 })
2852 .collect::<Vec<_>>();
2853 tabstop_ranges.sort_unstable_by(|a, b| a.start.cmp(&b.start, snapshot));
2854 tabstop_ranges
2855 })
2856 .collect::<Vec<_>>()
2857 });
2858
2859 if let Some(tabstop) = tabstops.first() {
2860 self.select_ranges(tabstop.iter().cloned(), Some(Autoscroll::Fit), cx);
2861 self.snippet_stack.push(SnippetState {
2862 active_index: 0,
2863 ranges: tabstops,
2864 });
2865 }
2866
2867 Ok(())
2868 }
2869
2870 pub fn move_to_next_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) -> bool {
2871 self.move_to_snippet_tabstop(Bias::Right, cx)
2872 }
2873
2874 pub fn move_to_prev_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) {
2875 self.move_to_snippet_tabstop(Bias::Left, cx);
2876 }
2877
2878 pub fn move_to_snippet_tabstop(&mut self, bias: Bias, cx: &mut ViewContext<Self>) -> bool {
2879 let buffer = self.buffer.read(cx).snapshot(cx);
2880
2881 if let Some(snippet) = self.snippet_stack.last_mut() {
2882 match bias {
2883 Bias::Left => {
2884 if snippet.active_index > 0 {
2885 snippet.active_index -= 1;
2886 } else {
2887 return false;
2888 }
2889 }
2890 Bias::Right => {
2891 if snippet.active_index + 1 < snippet.ranges.len() {
2892 snippet.active_index += 1;
2893 } else {
2894 return false;
2895 }
2896 }
2897 }
2898 if let Some(current_ranges) = snippet.ranges.get(snippet.active_index) {
2899 let new_selections = current_ranges
2900 .iter()
2901 .map(|new_range| {
2902 let new_range = new_range.to_offset(&buffer);
2903 Selection {
2904 id: post_inc(&mut self.next_selection_id),
2905 start: new_range.start,
2906 end: new_range.end,
2907 reversed: false,
2908 goal: SelectionGoal::None,
2909 }
2910 })
2911 .collect();
2912
2913 // Remove the snippet state when moving to the last tabstop.
2914 if snippet.active_index + 1 == snippet.ranges.len() {
2915 self.snippet_stack.pop();
2916 }
2917
2918 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2919 return true;
2920 }
2921 self.snippet_stack.pop();
2922 }
2923
2924 false
2925 }
2926
2927 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
2928 self.transact(cx, |this, cx| {
2929 this.select_all(&SelectAll, cx);
2930 this.insert("", cx);
2931 });
2932 }
2933
2934 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
2935 let mut selections = self.local_selections::<Point>(cx);
2936 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2937 for selection in &mut selections {
2938 if selection.is_empty() {
2939 let old_head = selection.head();
2940 let mut new_head =
2941 movement::left(&display_map, old_head.to_display_point(&display_map))
2942 .to_point(&display_map);
2943 if let Some((buffer, line_buffer_range)) = display_map
2944 .buffer_snapshot
2945 .buffer_line_for_row(old_head.row)
2946 {
2947 let indent_column = buffer.indent_column_for_line(line_buffer_range.start.row);
2948 if old_head.column <= indent_column && old_head.column > 0 {
2949 let indent = buffer.indent_size();
2950 new_head = cmp::min(
2951 new_head,
2952 Point::new(old_head.row, ((old_head.column - 1) / indent) * indent),
2953 );
2954 }
2955 }
2956
2957 selection.set_head(new_head, SelectionGoal::None);
2958 }
2959 }
2960
2961 self.transact(cx, |this, cx| {
2962 this.update_selections(selections, Some(Autoscroll::Fit), cx);
2963 this.insert("", cx);
2964 });
2965 }
2966
2967 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
2968 self.transact(cx, |this, cx| {
2969 this.move_selections(cx, |map, selection| {
2970 if selection.is_empty() {
2971 let cursor = movement::right(map, selection.head());
2972 selection.set_head(cursor, SelectionGoal::None);
2973 }
2974 });
2975 this.insert(&"", cx);
2976 });
2977 }
2978
2979 pub fn tab(&mut self, &Tab(direction): &Tab, cx: &mut ViewContext<Self>) {
2980 match direction {
2981 Direction::Prev => {
2982 if !self.snippet_stack.is_empty() {
2983 self.move_to_prev_snippet_tabstop(cx);
2984 return;
2985 }
2986
2987 self.outdent(&Outdent, cx);
2988 }
2989 Direction::Next => {
2990 if self.move_to_next_snippet_tabstop(cx) {
2991 return;
2992 }
2993
2994 let tab_size = cx.global::<Settings>().tab_size;
2995 let mut selections = self.local_selections::<Point>(cx);
2996 if selections.iter().all(|s| s.is_empty()) {
2997 self.transact(cx, |this, cx| {
2998 this.buffer.update(cx, |buffer, cx| {
2999 for selection in &mut selections {
3000 let char_column = buffer
3001 .read(cx)
3002 .text_for_range(
3003 Point::new(selection.start.row, 0)..selection.start,
3004 )
3005 .flat_map(str::chars)
3006 .count();
3007 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
3008 buffer.edit(
3009 [selection.start..selection.start],
3010 " ".repeat(chars_to_next_tab_stop),
3011 cx,
3012 );
3013 selection.start.column += chars_to_next_tab_stop as u32;
3014 selection.end = selection.start;
3015 }
3016 });
3017 this.update_selections(selections, Some(Autoscroll::Fit), cx);
3018 });
3019 } else {
3020 self.indent(&Indent, cx);
3021 }
3022 }
3023 }
3024 }
3025
3026 pub fn indent(&mut self, _: &Indent, cx: &mut ViewContext<Self>) {
3027 let tab_size = cx.global::<Settings>().tab_size;
3028 let mut selections = self.local_selections::<Point>(cx);
3029 self.transact(cx, |this, cx| {
3030 let mut last_indent = None;
3031 this.buffer.update(cx, |buffer, cx| {
3032 for selection in &mut selections {
3033 let mut start_row = selection.start.row;
3034 let mut end_row = selection.end.row + 1;
3035
3036 // If a selection ends at the beginning of a line, don't indent
3037 // that last line.
3038 if selection.end.column == 0 {
3039 end_row -= 1;
3040 }
3041
3042 // Avoid re-indenting a row that has already been indented by a
3043 // previous selection, but still update this selection's column
3044 // to reflect that indentation.
3045 if let Some((last_indent_row, last_indent_len)) = last_indent {
3046 if last_indent_row == selection.start.row {
3047 selection.start.column += last_indent_len;
3048 start_row += 1;
3049 }
3050 if last_indent_row == selection.end.row {
3051 selection.end.column += last_indent_len;
3052 }
3053 }
3054
3055 for row in start_row..end_row {
3056 let indent_column = buffer.read(cx).indent_column_for_line(row) as usize;
3057 let columns_to_next_tab_stop = tab_size - (indent_column % tab_size);
3058 let row_start = Point::new(row, 0);
3059 buffer.edit(
3060 [row_start..row_start],
3061 " ".repeat(columns_to_next_tab_stop),
3062 cx,
3063 );
3064
3065 // Update this selection's endpoints to reflect the indentation.
3066 if row == selection.start.row {
3067 selection.start.column += columns_to_next_tab_stop as u32;
3068 }
3069 if row == selection.end.row {
3070 selection.end.column += columns_to_next_tab_stop as u32;
3071 }
3072
3073 last_indent = Some((row, columns_to_next_tab_stop as u32));
3074 }
3075 }
3076 });
3077
3078 this.update_selections(selections, Some(Autoscroll::Fit), cx);
3079 });
3080 }
3081
3082 pub fn outdent(&mut self, _: &Outdent, cx: &mut ViewContext<Self>) {
3083 let tab_size = cx.global::<Settings>().tab_size;
3084 let selections = self.local_selections::<Point>(cx);
3085 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3086 let mut deletion_ranges = Vec::new();
3087 let mut last_outdent = None;
3088 {
3089 let buffer = self.buffer.read(cx).read(cx);
3090 for selection in &selections {
3091 let mut rows = selection.spanned_rows(false, &display_map);
3092
3093 // Avoid re-outdenting a row that has already been outdented by a
3094 // previous selection.
3095 if let Some(last_row) = last_outdent {
3096 if last_row == rows.start {
3097 rows.start += 1;
3098 }
3099 }
3100
3101 for row in rows {
3102 let column = buffer.indent_column_for_line(row) as usize;
3103 if column > 0 {
3104 let mut deletion_len = (column % tab_size) as u32;
3105 if deletion_len == 0 {
3106 deletion_len = tab_size as u32;
3107 }
3108 deletion_ranges.push(Point::new(row, 0)..Point::new(row, deletion_len));
3109 last_outdent = Some(row);
3110 }
3111 }
3112 }
3113 }
3114
3115 self.transact(cx, |this, cx| {
3116 this.buffer.update(cx, |buffer, cx| {
3117 buffer.edit(deletion_ranges, "", cx);
3118 });
3119 this.update_selections(
3120 this.local_selections::<usize>(cx),
3121 Some(Autoscroll::Fit),
3122 cx,
3123 );
3124 });
3125 }
3126
3127 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
3128 let selections = self.local_selections::<Point>(cx);
3129 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3130 let buffer = self.buffer.read(cx).snapshot(cx);
3131
3132 let mut new_cursors = Vec::new();
3133 let mut edit_ranges = Vec::new();
3134 let mut selections = selections.iter().peekable();
3135 while let Some(selection) = selections.next() {
3136 let mut rows = selection.spanned_rows(false, &display_map);
3137 let goal_display_column = selection.head().to_display_point(&display_map).column();
3138
3139 // Accumulate contiguous regions of rows that we want to delete.
3140 while let Some(next_selection) = selections.peek() {
3141 let next_rows = next_selection.spanned_rows(false, &display_map);
3142 if next_rows.start <= rows.end {
3143 rows.end = next_rows.end;
3144 selections.next().unwrap();
3145 } else {
3146 break;
3147 }
3148 }
3149
3150 let mut edit_start = Point::new(rows.start, 0).to_offset(&buffer);
3151 let edit_end;
3152 let cursor_buffer_row;
3153 if buffer.max_point().row >= rows.end {
3154 // If there's a line after the range, delete the \n from the end of the row range
3155 // and position the cursor on the next line.
3156 edit_end = Point::new(rows.end, 0).to_offset(&buffer);
3157 cursor_buffer_row = rows.end;
3158 } else {
3159 // If there isn't a line after the range, delete the \n from the line before the
3160 // start of the row range and position the cursor there.
3161 edit_start = edit_start.saturating_sub(1);
3162 edit_end = buffer.len();
3163 cursor_buffer_row = rows.start.saturating_sub(1);
3164 }
3165
3166 let mut cursor = Point::new(cursor_buffer_row, 0).to_display_point(&display_map);
3167 *cursor.column_mut() =
3168 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
3169
3170 new_cursors.push((
3171 selection.id,
3172 buffer.anchor_after(cursor.to_point(&display_map)),
3173 ));
3174 edit_ranges.push(edit_start..edit_end);
3175 }
3176
3177 self.transact(cx, |this, cx| {
3178 let buffer = this.buffer.update(cx, |buffer, cx| {
3179 buffer.edit(edit_ranges, "", cx);
3180 buffer.snapshot(cx)
3181 });
3182 let new_selections = new_cursors
3183 .into_iter()
3184 .map(|(id, cursor)| {
3185 let cursor = cursor.to_point(&buffer);
3186 Selection {
3187 id,
3188 start: cursor,
3189 end: cursor,
3190 reversed: false,
3191 goal: SelectionGoal::None,
3192 }
3193 })
3194 .collect();
3195 this.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3196 });
3197 }
3198
3199 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
3200 let selections = self.local_selections::<Point>(cx);
3201 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3202 let buffer = &display_map.buffer_snapshot;
3203
3204 let mut edits = Vec::new();
3205 let mut selections_iter = selections.iter().peekable();
3206 while let Some(selection) = selections_iter.next() {
3207 // Avoid duplicating the same lines twice.
3208 let mut rows = selection.spanned_rows(false, &display_map);
3209
3210 while let Some(next_selection) = selections_iter.peek() {
3211 let next_rows = next_selection.spanned_rows(false, &display_map);
3212 if next_rows.start <= rows.end - 1 {
3213 rows.end = next_rows.end;
3214 selections_iter.next().unwrap();
3215 } else {
3216 break;
3217 }
3218 }
3219
3220 // Copy the text from the selected row region and splice it at the start of the region.
3221 let start = Point::new(rows.start, 0);
3222 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
3223 let text = buffer
3224 .text_for_range(start..end)
3225 .chain(Some("\n"))
3226 .collect::<String>();
3227 edits.push((start, text, rows.len() as u32));
3228 }
3229
3230 self.transact(cx, |this, cx| {
3231 this.buffer.update(cx, |buffer, cx| {
3232 for (point, text, _) in edits.into_iter().rev() {
3233 buffer.edit(Some(point..point), text, cx);
3234 }
3235 });
3236
3237 this.request_autoscroll(Autoscroll::Fit, cx);
3238 });
3239 }
3240
3241 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
3242 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3243 let buffer = self.buffer.read(cx).snapshot(cx);
3244
3245 let mut edits = Vec::new();
3246 let mut unfold_ranges = Vec::new();
3247 let mut refold_ranges = Vec::new();
3248
3249 let selections = self.local_selections::<Point>(cx);
3250 let mut selections = selections.iter().peekable();
3251 let mut contiguous_row_selections = Vec::new();
3252 let mut new_selections = Vec::new();
3253
3254 while let Some(selection) = selections.next() {
3255 // Find all the selections that span a contiguous row range
3256 contiguous_row_selections.push(selection.clone());
3257 let start_row = selection.start.row;
3258 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
3259 display_map.next_line_boundary(selection.end).0.row + 1
3260 } else {
3261 selection.end.row
3262 };
3263
3264 while let Some(next_selection) = selections.peek() {
3265 if next_selection.start.row <= end_row {
3266 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
3267 display_map.next_line_boundary(next_selection.end).0.row + 1
3268 } else {
3269 next_selection.end.row
3270 };
3271 contiguous_row_selections.push(selections.next().unwrap().clone());
3272 } else {
3273 break;
3274 }
3275 }
3276
3277 // Move the text spanned by the row range to be before the line preceding the row range
3278 if start_row > 0 {
3279 let range_to_move = Point::new(start_row - 1, buffer.line_len(start_row - 1))
3280 ..Point::new(end_row - 1, buffer.line_len(end_row - 1));
3281 let insertion_point = display_map
3282 .prev_line_boundary(Point::new(start_row - 1, 0))
3283 .0;
3284
3285 // Don't move lines across excerpts
3286 if buffer
3287 .excerpt_boundaries_in_range((
3288 Bound::Excluded(insertion_point),
3289 Bound::Included(range_to_move.end),
3290 ))
3291 .next()
3292 .is_none()
3293 {
3294 let text = buffer
3295 .text_for_range(range_to_move.clone())
3296 .flat_map(|s| s.chars())
3297 .skip(1)
3298 .chain(['\n'])
3299 .collect::<String>();
3300
3301 edits.push((
3302 buffer.anchor_after(range_to_move.start)
3303 ..buffer.anchor_before(range_to_move.end),
3304 String::new(),
3305 ));
3306 let insertion_anchor = buffer.anchor_after(insertion_point);
3307 edits.push((insertion_anchor.clone()..insertion_anchor, text));
3308
3309 let row_delta = range_to_move.start.row - insertion_point.row + 1;
3310
3311 // Move selections up
3312 new_selections.extend(contiguous_row_selections.drain(..).map(
3313 |mut selection| {
3314 selection.start.row -= row_delta;
3315 selection.end.row -= row_delta;
3316 selection
3317 },
3318 ));
3319
3320 // Move folds up
3321 unfold_ranges.push(range_to_move.clone());
3322 for fold in display_map.folds_in_range(
3323 buffer.anchor_before(range_to_move.start)
3324 ..buffer.anchor_after(range_to_move.end),
3325 ) {
3326 let mut start = fold.start.to_point(&buffer);
3327 let mut end = fold.end.to_point(&buffer);
3328 start.row -= row_delta;
3329 end.row -= row_delta;
3330 refold_ranges.push(start..end);
3331 }
3332 }
3333 }
3334
3335 // If we didn't move line(s), preserve the existing selections
3336 new_selections.extend(contiguous_row_selections.drain(..));
3337 }
3338
3339 self.transact(cx, |this, cx| {
3340 this.unfold_ranges(unfold_ranges, true, cx);
3341 this.buffer.update(cx, |buffer, cx| {
3342 for (range, text) in edits {
3343 buffer.edit([range], text, cx);
3344 }
3345 });
3346 this.fold_ranges(refold_ranges, cx);
3347 this.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3348 });
3349 }
3350
3351 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
3352 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3353 let buffer = self.buffer.read(cx).snapshot(cx);
3354
3355 let mut edits = Vec::new();
3356 let mut unfold_ranges = Vec::new();
3357 let mut refold_ranges = Vec::new();
3358
3359 let selections = self.local_selections::<Point>(cx);
3360 let mut selections = selections.iter().peekable();
3361 let mut contiguous_row_selections = Vec::new();
3362 let mut new_selections = Vec::new();
3363
3364 while let Some(selection) = selections.next() {
3365 // Find all the selections that span a contiguous row range
3366 contiguous_row_selections.push(selection.clone());
3367 let start_row = selection.start.row;
3368 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
3369 display_map.next_line_boundary(selection.end).0.row + 1
3370 } else {
3371 selection.end.row
3372 };
3373
3374 while let Some(next_selection) = selections.peek() {
3375 if next_selection.start.row <= end_row {
3376 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
3377 display_map.next_line_boundary(next_selection.end).0.row + 1
3378 } else {
3379 next_selection.end.row
3380 };
3381 contiguous_row_selections.push(selections.next().unwrap().clone());
3382 } else {
3383 break;
3384 }
3385 }
3386
3387 // Move the text spanned by the row range to be after the last line of the row range
3388 if end_row <= buffer.max_point().row {
3389 let range_to_move = Point::new(start_row, 0)..Point::new(end_row, 0);
3390 let insertion_point = display_map.next_line_boundary(Point::new(end_row, 0)).0;
3391
3392 // Don't move lines across excerpt boundaries
3393 if buffer
3394 .excerpt_boundaries_in_range((
3395 Bound::Excluded(range_to_move.start),
3396 Bound::Included(insertion_point),
3397 ))
3398 .next()
3399 .is_none()
3400 {
3401 let mut text = String::from("\n");
3402 text.extend(buffer.text_for_range(range_to_move.clone()));
3403 text.pop(); // Drop trailing newline
3404 edits.push((
3405 buffer.anchor_after(range_to_move.start)
3406 ..buffer.anchor_before(range_to_move.end),
3407 String::new(),
3408 ));
3409 let insertion_anchor = buffer.anchor_after(insertion_point);
3410 edits.push((insertion_anchor.clone()..insertion_anchor, text));
3411
3412 let row_delta = insertion_point.row - range_to_move.end.row + 1;
3413
3414 // Move selections down
3415 new_selections.extend(contiguous_row_selections.drain(..).map(
3416 |mut selection| {
3417 selection.start.row += row_delta;
3418 selection.end.row += row_delta;
3419 selection
3420 },
3421 ));
3422
3423 // Move folds down
3424 unfold_ranges.push(range_to_move.clone());
3425 for fold in display_map.folds_in_range(
3426 buffer.anchor_before(range_to_move.start)
3427 ..buffer.anchor_after(range_to_move.end),
3428 ) {
3429 let mut start = fold.start.to_point(&buffer);
3430 let mut end = fold.end.to_point(&buffer);
3431 start.row += row_delta;
3432 end.row += row_delta;
3433 refold_ranges.push(start..end);
3434 }
3435 }
3436 }
3437
3438 // If we didn't move line(s), preserve the existing selections
3439 new_selections.extend(contiguous_row_selections.drain(..));
3440 }
3441
3442 self.transact(cx, |this, cx| {
3443 this.unfold_ranges(unfold_ranges, true, cx);
3444 this.buffer.update(cx, |buffer, cx| {
3445 for (range, text) in edits {
3446 buffer.edit([range], text, cx);
3447 }
3448 });
3449 this.fold_ranges(refold_ranges, cx);
3450 this.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3451 });
3452 }
3453
3454 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
3455 let mut text = String::new();
3456 let mut selections = self.local_selections::<Point>(cx);
3457 let mut clipboard_selections = Vec::with_capacity(selections.len());
3458 {
3459 let buffer = self.buffer.read(cx).read(cx);
3460 let max_point = buffer.max_point();
3461 for selection in &mut selections {
3462 let is_entire_line = selection.is_empty();
3463 if is_entire_line {
3464 selection.start = Point::new(selection.start.row, 0);
3465 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
3466 selection.goal = SelectionGoal::None;
3467 }
3468 let mut len = 0;
3469 for chunk in buffer.text_for_range(selection.start..selection.end) {
3470 text.push_str(chunk);
3471 len += chunk.len();
3472 }
3473 clipboard_selections.push(ClipboardSelection {
3474 len,
3475 is_entire_line,
3476 });
3477 }
3478 }
3479
3480 self.transact(cx, |this, cx| {
3481 this.update_selections(selections, Some(Autoscroll::Fit), cx);
3482 this.insert("", cx);
3483 cx.write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
3484 });
3485 }
3486
3487 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
3488 let selections = self.local_selections::<Point>(cx);
3489 let mut text = String::new();
3490 let mut clipboard_selections = Vec::with_capacity(selections.len());
3491 {
3492 let buffer = self.buffer.read(cx).read(cx);
3493 let max_point = buffer.max_point();
3494 for selection in selections.iter() {
3495 let mut start = selection.start;
3496 let mut end = selection.end;
3497 let is_entire_line = selection.is_empty();
3498 if is_entire_line {
3499 start = Point::new(start.row, 0);
3500 end = cmp::min(max_point, Point::new(start.row + 1, 0));
3501 }
3502 let mut len = 0;
3503 for chunk in buffer.text_for_range(start..end) {
3504 text.push_str(chunk);
3505 len += chunk.len();
3506 }
3507 clipboard_selections.push(ClipboardSelection {
3508 len,
3509 is_entire_line,
3510 });
3511 }
3512 }
3513
3514 cx.write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
3515 }
3516
3517 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
3518 self.transact(cx, |this, cx| {
3519 if let Some(item) = cx.as_mut().read_from_clipboard() {
3520 let clipboard_text = item.text();
3521 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
3522 let mut selections = this.local_selections::<usize>(cx);
3523 let all_selections_were_entire_line =
3524 clipboard_selections.iter().all(|s| s.is_entire_line);
3525 if clipboard_selections.len() != selections.len() {
3526 clipboard_selections.clear();
3527 }
3528
3529 let mut delta = 0_isize;
3530 let mut start_offset = 0;
3531 for (i, selection) in selections.iter_mut().enumerate() {
3532 let to_insert;
3533 let entire_line;
3534 if let Some(clipboard_selection) = clipboard_selections.get(i) {
3535 let end_offset = start_offset + clipboard_selection.len;
3536 to_insert = &clipboard_text[start_offset..end_offset];
3537 entire_line = clipboard_selection.is_entire_line;
3538 start_offset = end_offset
3539 } else {
3540 to_insert = clipboard_text.as_str();
3541 entire_line = all_selections_were_entire_line;
3542 }
3543
3544 selection.start = (selection.start as isize + delta) as usize;
3545 selection.end = (selection.end as isize + delta) as usize;
3546
3547 this.buffer.update(cx, |buffer, cx| {
3548 // If the corresponding selection was empty when this slice of the
3549 // clipboard text was written, then the entire line containing the
3550 // selection was copied. If this selection is also currently empty,
3551 // then paste the line before the current line of the buffer.
3552 let range = if selection.is_empty() && entire_line {
3553 let column =
3554 selection.start.to_point(&buffer.read(cx)).column as usize;
3555 let line_start = selection.start - column;
3556 line_start..line_start
3557 } else {
3558 selection.start..selection.end
3559 };
3560
3561 delta += to_insert.len() as isize - range.len() as isize;
3562 buffer.edit([range], to_insert, cx);
3563 selection.start += to_insert.len();
3564 selection.end = selection.start;
3565 });
3566 }
3567 this.update_selections(selections, Some(Autoscroll::Fit), cx);
3568 } else {
3569 this.insert(clipboard_text, cx);
3570 }
3571 }
3572 });
3573 }
3574
3575 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
3576 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
3577 if let Some((selections, _)) = self.selection_history.transaction(tx_id).cloned() {
3578 self.set_selections(selections, None, true, cx);
3579 }
3580 self.request_autoscroll(Autoscroll::Fit, cx);
3581 cx.emit(Event::Edited);
3582 }
3583 }
3584
3585 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
3586 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
3587 if let Some((_, Some(selections))) = self.selection_history.transaction(tx_id).cloned()
3588 {
3589 self.set_selections(selections, None, true, cx);
3590 }
3591 self.request_autoscroll(Autoscroll::Fit, cx);
3592 cx.emit(Event::Edited);
3593 }
3594 }
3595
3596 pub fn finalize_last_transaction(&mut self, cx: &mut ViewContext<Self>) {
3597 self.buffer
3598 .update(cx, |buffer, cx| buffer.finalize_last_transaction(cx));
3599 }
3600
3601 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
3602 self.move_selections(cx, |map, selection| {
3603 let cursor = if selection.is_empty() {
3604 movement::left(map, selection.start)
3605 } else {
3606 selection.start
3607 };
3608 selection.collapse_to(cursor, SelectionGoal::None);
3609 });
3610 }
3611
3612 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
3613 self.move_selection_heads(cx, |map, head, _| {
3614 (movement::left(map, head), SelectionGoal::None)
3615 });
3616 }
3617
3618 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
3619 self.move_selections(cx, |map, selection| {
3620 let cursor = if selection.is_empty() {
3621 movement::right(map, selection.end)
3622 } else {
3623 selection.end
3624 };
3625 selection.collapse_to(cursor, SelectionGoal::None)
3626 });
3627 }
3628
3629 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
3630 self.move_selection_heads(cx, |map, head, _| {
3631 (movement::right(map, head), SelectionGoal::None)
3632 });
3633 }
3634
3635 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
3636 if self.take_rename(true, cx).is_some() {
3637 return;
3638 }
3639
3640 if let Some(context_menu) = self.context_menu.as_mut() {
3641 if context_menu.select_prev(cx) {
3642 return;
3643 }
3644 }
3645
3646 if matches!(self.mode, EditorMode::SingleLine) {
3647 cx.propagate_action();
3648 return;
3649 }
3650
3651 self.move_selections(cx, |map, selection| {
3652 if !selection.is_empty() {
3653 selection.goal = SelectionGoal::None;
3654 }
3655 let (cursor, goal) = movement::up(&map, selection.start, selection.goal);
3656 selection.collapse_to(cursor, goal);
3657 });
3658 }
3659
3660 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
3661 self.move_selection_heads(cx, movement::up)
3662 }
3663
3664 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
3665 self.take_rename(true, cx);
3666
3667 if let Some(context_menu) = self.context_menu.as_mut() {
3668 if context_menu.select_next(cx) {
3669 return;
3670 }
3671 }
3672
3673 if matches!(self.mode, EditorMode::SingleLine) {
3674 cx.propagate_action();
3675 return;
3676 }
3677
3678 self.move_selections(cx, |map, selection| {
3679 if !selection.is_empty() {
3680 selection.goal = SelectionGoal::None;
3681 }
3682 let (cursor, goal) = movement::down(&map, selection.end, selection.goal);
3683 selection.collapse_to(cursor, goal);
3684 });
3685 }
3686
3687 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
3688 self.move_selection_heads(cx, movement::down)
3689 }
3690
3691 pub fn move_to_previous_word_start(
3692 &mut self,
3693 _: &MoveToPreviousWordStart,
3694 cx: &mut ViewContext<Self>,
3695 ) {
3696 self.move_cursors(cx, |map, head, _| {
3697 (
3698 movement::previous_word_start(map, head),
3699 SelectionGoal::None,
3700 )
3701 });
3702 }
3703
3704 pub fn move_to_previous_subword_start(
3705 &mut self,
3706 _: &MoveToPreviousSubwordStart,
3707 cx: &mut ViewContext<Self>,
3708 ) {
3709 self.move_cursors(cx, |map, head, _| {
3710 (
3711 movement::previous_subword_start(map, head),
3712 SelectionGoal::None,
3713 )
3714 });
3715 }
3716
3717 pub fn select_to_previous_word_start(
3718 &mut self,
3719 _: &SelectToPreviousWordStart,
3720 cx: &mut ViewContext<Self>,
3721 ) {
3722 self.move_selection_heads(cx, |map, head, _| {
3723 (
3724 movement::previous_word_start(map, head),
3725 SelectionGoal::None,
3726 )
3727 });
3728 }
3729
3730 pub fn select_to_previous_subword_start(
3731 &mut self,
3732 _: &SelectToPreviousSubwordStart,
3733 cx: &mut ViewContext<Self>,
3734 ) {
3735 self.move_selection_heads(cx, |map, head, _| {
3736 (
3737 movement::previous_subword_start(map, head),
3738 SelectionGoal::None,
3739 )
3740 });
3741 }
3742
3743 pub fn delete_to_previous_word_start(
3744 &mut self,
3745 _: &DeleteToPreviousWordStart,
3746 cx: &mut ViewContext<Self>,
3747 ) {
3748 self.transact(cx, |this, cx| {
3749 this.move_selections(cx, |map, selection| {
3750 if selection.is_empty() {
3751 let cursor = movement::previous_word_start(map, selection.head());
3752 selection.set_head(cursor, SelectionGoal::None);
3753 }
3754 });
3755 this.insert("", cx);
3756 });
3757 }
3758
3759 pub fn delete_to_previous_subword_start(
3760 &mut self,
3761 _: &DeleteToPreviousSubwordStart,
3762 cx: &mut ViewContext<Self>,
3763 ) {
3764 self.transact(cx, |this, cx| {
3765 this.move_selections(cx, |map, selection| {
3766 if selection.is_empty() {
3767 let cursor = movement::previous_subword_start(map, selection.head());
3768 selection.set_head(cursor, SelectionGoal::None);
3769 }
3770 });
3771 this.insert("", cx);
3772 });
3773 }
3774
3775 pub fn move_to_next_word_end(&mut self, _: &MoveToNextWordEnd, cx: &mut ViewContext<Self>) {
3776 self.move_cursors(cx, |map, head, _| {
3777 (movement::next_word_end(map, head), SelectionGoal::None)
3778 });
3779 }
3780
3781 pub fn move_to_next_subword_end(
3782 &mut self,
3783 _: &MoveToNextSubwordEnd,
3784 cx: &mut ViewContext<Self>,
3785 ) {
3786 self.move_cursors(cx, |map, head, _| {
3787 (movement::next_subword_end(map, head), SelectionGoal::None)
3788 });
3789 }
3790
3791 pub fn select_to_next_word_end(&mut self, _: &SelectToNextWordEnd, cx: &mut ViewContext<Self>) {
3792 self.move_selection_heads(cx, |map, head, _| {
3793 (movement::next_word_end(map, head), SelectionGoal::None)
3794 });
3795 }
3796
3797 pub fn select_to_next_subword_end(
3798 &mut self,
3799 _: &SelectToNextSubwordEnd,
3800 cx: &mut ViewContext<Self>,
3801 ) {
3802 self.move_selection_heads(cx, |map, head, _| {
3803 (movement::next_subword_end(map, head), SelectionGoal::None)
3804 });
3805 }
3806
3807 pub fn delete_to_next_word_end(&mut self, _: &DeleteToNextWordEnd, cx: &mut ViewContext<Self>) {
3808 self.transact(cx, |this, cx| {
3809 this.move_selections(cx, |map, selection| {
3810 if selection.is_empty() {
3811 let cursor = movement::next_word_end(map, selection.head());
3812 selection.set_head(cursor, SelectionGoal::None);
3813 }
3814 });
3815 this.insert("", cx);
3816 });
3817 }
3818
3819 pub fn delete_to_next_subword_end(
3820 &mut self,
3821 _: &DeleteToNextSubwordEnd,
3822 cx: &mut ViewContext<Self>,
3823 ) {
3824 self.transact(cx, |this, cx| {
3825 this.move_selections(cx, |map, selection| {
3826 if selection.is_empty() {
3827 let cursor = movement::next_subword_end(map, selection.head());
3828 selection.set_head(cursor, SelectionGoal::None);
3829 }
3830 });
3831 this.insert("", cx);
3832 });
3833 }
3834
3835 pub fn move_to_beginning_of_line(
3836 &mut self,
3837 _: &MoveToBeginningOfLine,
3838 cx: &mut ViewContext<Self>,
3839 ) {
3840 self.move_cursors(cx, |map, head, _| {
3841 (
3842 movement::line_beginning(map, head, true),
3843 SelectionGoal::None,
3844 )
3845 });
3846 }
3847
3848 pub fn select_to_beginning_of_line(
3849 &mut self,
3850 SelectToBeginningOfLine(stop_at_soft_boundaries): &SelectToBeginningOfLine,
3851 cx: &mut ViewContext<Self>,
3852 ) {
3853 self.move_selection_heads(cx, |map, head, _| {
3854 (
3855 movement::line_beginning(map, head, *stop_at_soft_boundaries),
3856 SelectionGoal::None,
3857 )
3858 });
3859 }
3860
3861 pub fn delete_to_beginning_of_line(
3862 &mut self,
3863 _: &DeleteToBeginningOfLine,
3864 cx: &mut ViewContext<Self>,
3865 ) {
3866 self.transact(cx, |this, cx| {
3867 this.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
3868 this.backspace(&Backspace, cx);
3869 });
3870 }
3871
3872 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
3873 self.move_cursors(cx, |map, head, _| {
3874 (movement::line_end(map, head, true), SelectionGoal::None)
3875 });
3876 }
3877
3878 pub fn select_to_end_of_line(
3879 &mut self,
3880 SelectToEndOfLine(stop_at_soft_boundaries): &SelectToEndOfLine,
3881 cx: &mut ViewContext<Self>,
3882 ) {
3883 self.move_selection_heads(cx, |map, head, _| {
3884 (
3885 movement::line_end(map, head, *stop_at_soft_boundaries),
3886 SelectionGoal::None,
3887 )
3888 });
3889 }
3890
3891 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
3892 self.transact(cx, |this, cx| {
3893 this.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3894 this.delete(&Delete, cx);
3895 });
3896 }
3897
3898 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
3899 self.transact(cx, |this, cx| {
3900 this.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3901 this.cut(&Cut, cx);
3902 });
3903 }
3904
3905 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
3906 if matches!(self.mode, EditorMode::SingleLine) {
3907 cx.propagate_action();
3908 return;
3909 }
3910
3911 let selection = Selection {
3912 id: post_inc(&mut self.next_selection_id),
3913 start: 0,
3914 end: 0,
3915 reversed: false,
3916 goal: SelectionGoal::None,
3917 };
3918 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3919 }
3920
3921 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
3922 let mut selection = self.local_selections::<Point>(cx).last().unwrap().clone();
3923 selection.set_head(Point::zero(), SelectionGoal::None);
3924 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3925 }
3926
3927 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
3928 if matches!(self.mode, EditorMode::SingleLine) {
3929 cx.propagate_action();
3930 return;
3931 }
3932
3933 let cursor = self.buffer.read(cx).read(cx).len();
3934 let selection = Selection {
3935 id: post_inc(&mut self.next_selection_id),
3936 start: cursor,
3937 end: cursor,
3938 reversed: false,
3939 goal: SelectionGoal::None,
3940 };
3941 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3942 }
3943
3944 pub fn set_nav_history(&mut self, nav_history: Option<ItemNavHistory>) {
3945 self.nav_history = nav_history;
3946 }
3947
3948 pub fn nav_history(&self) -> Option<&ItemNavHistory> {
3949 self.nav_history.as_ref()
3950 }
3951
3952 fn push_to_nav_history(
3953 &self,
3954 position: Anchor,
3955 new_position: Option<Point>,
3956 cx: &mut ViewContext<Self>,
3957 ) {
3958 if let Some(nav_history) = &self.nav_history {
3959 let buffer = self.buffer.read(cx).read(cx);
3960 let offset = position.to_offset(&buffer);
3961 let point = position.to_point(&buffer);
3962 drop(buffer);
3963
3964 if let Some(new_position) = new_position {
3965 let row_delta = (new_position.row as i64 - point.row as i64).abs();
3966 if row_delta < MIN_NAVIGATION_HISTORY_ROW_DELTA {
3967 return;
3968 }
3969 }
3970
3971 nav_history.push(Some(NavigationData {
3972 anchor: position,
3973 offset,
3974 }));
3975 }
3976 }
3977
3978 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
3979 let mut selection = self.local_selections::<usize>(cx).first().unwrap().clone();
3980 selection.set_head(self.buffer.read(cx).read(cx).len(), SelectionGoal::None);
3981 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3982 }
3983
3984 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
3985 let selection = Selection {
3986 id: post_inc(&mut self.next_selection_id),
3987 start: 0,
3988 end: self.buffer.read(cx).read(cx).len(),
3989 reversed: false,
3990 goal: SelectionGoal::None,
3991 };
3992 self.update_selections(vec![selection], None, cx);
3993 }
3994
3995 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
3996 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3997 let mut selections = self.local_selections::<Point>(cx);
3998 let max_point = display_map.buffer_snapshot.max_point();
3999 for selection in &mut selections {
4000 let rows = selection.spanned_rows(true, &display_map);
4001 selection.start = Point::new(rows.start, 0);
4002 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
4003 selection.reversed = false;
4004 }
4005 self.update_selections(selections, Some(Autoscroll::Fit), cx);
4006 }
4007
4008 pub fn split_selection_into_lines(
4009 &mut self,
4010 _: &SplitSelectionIntoLines,
4011 cx: &mut ViewContext<Self>,
4012 ) {
4013 let mut to_unfold = Vec::new();
4014 let mut new_selections = Vec::new();
4015 {
4016 let selections = self.local_selections::<Point>(cx);
4017 let buffer = self.buffer.read(cx).read(cx);
4018 for selection in selections {
4019 for row in selection.start.row..selection.end.row {
4020 let cursor = Point::new(row, buffer.line_len(row));
4021 new_selections.push(Selection {
4022 id: post_inc(&mut self.next_selection_id),
4023 start: cursor,
4024 end: cursor,
4025 reversed: false,
4026 goal: SelectionGoal::None,
4027 });
4028 }
4029 new_selections.push(Selection {
4030 id: selection.id,
4031 start: selection.end,
4032 end: selection.end,
4033 reversed: false,
4034 goal: SelectionGoal::None,
4035 });
4036 to_unfold.push(selection.start..selection.end);
4037 }
4038 }
4039 self.unfold_ranges(to_unfold, true, cx);
4040 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
4041 }
4042
4043 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
4044 self.add_selection(true, cx);
4045 }
4046
4047 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
4048 self.add_selection(false, cx);
4049 }
4050
4051 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
4052 self.push_to_selection_history();
4053 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4054 let mut selections = self.local_selections::<Point>(cx);
4055 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
4056 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
4057 let range = oldest_selection.display_range(&display_map).sorted();
4058 let columns = cmp::min(range.start.column(), range.end.column())
4059 ..cmp::max(range.start.column(), range.end.column());
4060
4061 selections.clear();
4062 let mut stack = Vec::new();
4063 for row in range.start.row()..=range.end.row() {
4064 if let Some(selection) = self.build_columnar_selection(
4065 &display_map,
4066 row,
4067 &columns,
4068 oldest_selection.reversed,
4069 ) {
4070 stack.push(selection.id);
4071 selections.push(selection);
4072 }
4073 }
4074
4075 if above {
4076 stack.reverse();
4077 }
4078
4079 AddSelectionsState { above, stack }
4080 });
4081
4082 let last_added_selection = *state.stack.last().unwrap();
4083 let mut new_selections = Vec::new();
4084 if above == state.above {
4085 let end_row = if above {
4086 0
4087 } else {
4088 display_map.max_point().row()
4089 };
4090
4091 'outer: for selection in selections {
4092 if selection.id == last_added_selection {
4093 let range = selection.display_range(&display_map).sorted();
4094 debug_assert_eq!(range.start.row(), range.end.row());
4095 let mut row = range.start.row();
4096 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
4097 {
4098 start..end
4099 } else {
4100 cmp::min(range.start.column(), range.end.column())
4101 ..cmp::max(range.start.column(), range.end.column())
4102 };
4103
4104 while row != end_row {
4105 if above {
4106 row -= 1;
4107 } else {
4108 row += 1;
4109 }
4110
4111 if let Some(new_selection) = self.build_columnar_selection(
4112 &display_map,
4113 row,
4114 &columns,
4115 selection.reversed,
4116 ) {
4117 state.stack.push(new_selection.id);
4118 if above {
4119 new_selections.push(new_selection);
4120 new_selections.push(selection);
4121 } else {
4122 new_selections.push(selection);
4123 new_selections.push(new_selection);
4124 }
4125
4126 continue 'outer;
4127 }
4128 }
4129 }
4130
4131 new_selections.push(selection);
4132 }
4133 } else {
4134 new_selections = selections;
4135 new_selections.retain(|s| s.id != last_added_selection);
4136 state.stack.pop();
4137 }
4138
4139 self.update_selections(new_selections, Some(Autoscroll::Newest), cx);
4140 if state.stack.len() > 1 {
4141 self.add_selections_state = Some(state);
4142 }
4143 }
4144
4145 pub fn select_next(&mut self, action: &SelectNext, cx: &mut ViewContext<Self>) {
4146 self.push_to_selection_history();
4147 let replace_newest = action.0;
4148 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4149 let buffer = &display_map.buffer_snapshot;
4150 let mut selections = self.local_selections::<usize>(cx);
4151 if let Some(mut select_next_state) = self.select_next_state.take() {
4152 let query = &select_next_state.query;
4153 if !select_next_state.done {
4154 let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
4155 let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
4156 let mut next_selected_range = None;
4157
4158 let bytes_after_last_selection =
4159 buffer.bytes_in_range(last_selection.end..buffer.len());
4160 let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
4161 let query_matches = query
4162 .stream_find_iter(bytes_after_last_selection)
4163 .map(|result| (last_selection.end, result))
4164 .chain(
4165 query
4166 .stream_find_iter(bytes_before_first_selection)
4167 .map(|result| (0, result)),
4168 );
4169 for (start_offset, query_match) in query_matches {
4170 let query_match = query_match.unwrap(); // can only fail due to I/O
4171 let offset_range =
4172 start_offset + query_match.start()..start_offset + query_match.end();
4173 let display_range = offset_range.start.to_display_point(&display_map)
4174 ..offset_range.end.to_display_point(&display_map);
4175
4176 if !select_next_state.wordwise
4177 || (!movement::is_inside_word(&display_map, display_range.start)
4178 && !movement::is_inside_word(&display_map, display_range.end))
4179 {
4180 next_selected_range = Some(offset_range);
4181 break;
4182 }
4183 }
4184
4185 if let Some(next_selected_range) = next_selected_range {
4186 if replace_newest {
4187 if let Some(newest_id) =
4188 selections.iter().max_by_key(|s| s.id).map(|s| s.id)
4189 {
4190 selections.retain(|s| s.id != newest_id);
4191 }
4192 }
4193 selections.push(Selection {
4194 id: post_inc(&mut self.next_selection_id),
4195 start: next_selected_range.start,
4196 end: next_selected_range.end,
4197 reversed: false,
4198 goal: SelectionGoal::None,
4199 });
4200 self.unfold_ranges([next_selected_range], false, cx);
4201 self.update_selections(selections, Some(Autoscroll::Newest), cx);
4202 } else {
4203 select_next_state.done = true;
4204 }
4205 }
4206
4207 self.select_next_state = Some(select_next_state);
4208 } else if selections.len() == 1 {
4209 let selection = selections.last_mut().unwrap();
4210 if selection.start == selection.end {
4211 let word_range = movement::surrounding_word(
4212 &display_map,
4213 selection.start.to_display_point(&display_map),
4214 );
4215 selection.start = word_range.start.to_offset(&display_map, Bias::Left);
4216 selection.end = word_range.end.to_offset(&display_map, Bias::Left);
4217 selection.goal = SelectionGoal::None;
4218 selection.reversed = false;
4219
4220 let query = buffer
4221 .text_for_range(selection.start..selection.end)
4222 .collect::<String>();
4223 let select_state = SelectNextState {
4224 query: AhoCorasick::new_auto_configured(&[query]),
4225 wordwise: true,
4226 done: false,
4227 };
4228 self.unfold_ranges([selection.start..selection.end], false, cx);
4229 self.update_selections(selections, Some(Autoscroll::Newest), cx);
4230 self.select_next_state = Some(select_state);
4231 } else {
4232 let query = buffer
4233 .text_for_range(selection.start..selection.end)
4234 .collect::<String>();
4235 self.select_next_state = Some(SelectNextState {
4236 query: AhoCorasick::new_auto_configured(&[query]),
4237 wordwise: false,
4238 done: false,
4239 });
4240 self.select_next(action, cx);
4241 }
4242 }
4243 }
4244
4245 pub fn toggle_comments(&mut self, _: &ToggleComments, cx: &mut ViewContext<Self>) {
4246 // Get the line comment prefix. Split its trailing whitespace into a separate string,
4247 // as that portion won't be used for detecting if a line is a comment.
4248 let full_comment_prefix =
4249 if let Some(prefix) = self.language(cx).and_then(|l| l.line_comment_prefix()) {
4250 prefix.to_string()
4251 } else {
4252 return;
4253 };
4254 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
4255 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
4256
4257 self.transact(cx, |this, cx| {
4258 let mut selections = this.local_selections::<Point>(cx);
4259 let mut all_selection_lines_are_comments = true;
4260 let mut edit_ranges = Vec::new();
4261 let mut last_toggled_row = None;
4262 this.buffer.update(cx, |buffer, cx| {
4263 for selection in &mut selections {
4264 edit_ranges.clear();
4265 let snapshot = buffer.snapshot(cx);
4266
4267 let end_row =
4268 if selection.end.row > selection.start.row && selection.end.column == 0 {
4269 selection.end.row
4270 } else {
4271 selection.end.row + 1
4272 };
4273
4274 for row in selection.start.row..end_row {
4275 // If multiple selections contain a given row, avoid processing that
4276 // row more than once.
4277 if last_toggled_row == Some(row) {
4278 continue;
4279 } else {
4280 last_toggled_row = Some(row);
4281 }
4282
4283 if snapshot.is_line_blank(row) {
4284 continue;
4285 }
4286
4287 let start = Point::new(row, snapshot.indent_column_for_line(row));
4288 let mut line_bytes = snapshot
4289 .bytes_in_range(start..snapshot.max_point())
4290 .flatten()
4291 .copied();
4292
4293 // If this line currently begins with the line comment prefix, then record
4294 // the range containing the prefix.
4295 if all_selection_lines_are_comments
4296 && line_bytes
4297 .by_ref()
4298 .take(comment_prefix.len())
4299 .eq(comment_prefix.bytes())
4300 {
4301 // Include any whitespace that matches the comment prefix.
4302 let matching_whitespace_len = line_bytes
4303 .zip(comment_prefix_whitespace.bytes())
4304 .take_while(|(a, b)| a == b)
4305 .count()
4306 as u32;
4307 let end = Point::new(
4308 row,
4309 start.column
4310 + comment_prefix.len() as u32
4311 + matching_whitespace_len,
4312 );
4313 edit_ranges.push(start..end);
4314 }
4315 // If this line does not begin with the line comment prefix, then record
4316 // the position where the prefix should be inserted.
4317 else {
4318 all_selection_lines_are_comments = false;
4319 edit_ranges.push(start..start);
4320 }
4321 }
4322
4323 if !edit_ranges.is_empty() {
4324 if all_selection_lines_are_comments {
4325 buffer.edit(edit_ranges.iter().cloned(), "", cx);
4326 } else {
4327 let min_column =
4328 edit_ranges.iter().map(|r| r.start.column).min().unwrap();
4329 let edit_ranges = edit_ranges.iter().map(|range| {
4330 let position = Point::new(range.start.row, min_column);
4331 position..position
4332 });
4333 buffer.edit(edit_ranges, &full_comment_prefix, cx);
4334 }
4335 }
4336 }
4337 });
4338
4339 this.update_selections(
4340 this.local_selections::<usize>(cx),
4341 Some(Autoscroll::Fit),
4342 cx,
4343 );
4344 });
4345 }
4346
4347 pub fn select_larger_syntax_node(
4348 &mut self,
4349 _: &SelectLargerSyntaxNode,
4350 cx: &mut ViewContext<Self>,
4351 ) {
4352 let old_selections = self.local_selections::<usize>(cx).into_boxed_slice();
4353 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4354 let buffer = self.buffer.read(cx).snapshot(cx);
4355
4356 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
4357 let mut selected_larger_node = false;
4358 let new_selections = old_selections
4359 .iter()
4360 .map(|selection| {
4361 let old_range = selection.start..selection.end;
4362 let mut new_range = old_range.clone();
4363 while let Some(containing_range) =
4364 buffer.range_for_syntax_ancestor(new_range.clone())
4365 {
4366 new_range = containing_range;
4367 if !display_map.intersects_fold(new_range.start)
4368 && !display_map.intersects_fold(new_range.end)
4369 {
4370 break;
4371 }
4372 }
4373
4374 selected_larger_node |= new_range != old_range;
4375 Selection {
4376 id: selection.id,
4377 start: new_range.start,
4378 end: new_range.end,
4379 goal: SelectionGoal::None,
4380 reversed: selection.reversed,
4381 }
4382 })
4383 .collect::<Vec<_>>();
4384
4385 if selected_larger_node {
4386 stack.push(old_selections);
4387 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
4388 }
4389 self.select_larger_syntax_node_stack = stack;
4390 }
4391
4392 pub fn select_smaller_syntax_node(
4393 &mut self,
4394 _: &SelectSmallerSyntaxNode,
4395 cx: &mut ViewContext<Self>,
4396 ) {
4397 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
4398 if let Some(selections) = stack.pop() {
4399 self.update_selections(selections.to_vec(), Some(Autoscroll::Fit), cx);
4400 }
4401 self.select_larger_syntax_node_stack = stack;
4402 }
4403
4404 pub fn move_to_enclosing_bracket(
4405 &mut self,
4406 _: &MoveToEnclosingBracket,
4407 cx: &mut ViewContext<Self>,
4408 ) {
4409 let mut selections = self.local_selections::<usize>(cx);
4410 let buffer = self.buffer.read(cx).snapshot(cx);
4411 for selection in &mut selections {
4412 if let Some((open_range, close_range)) =
4413 buffer.enclosing_bracket_ranges(selection.start..selection.end)
4414 {
4415 let close_range = close_range.to_inclusive();
4416 let destination = if close_range.contains(&selection.start)
4417 && close_range.contains(&selection.end)
4418 {
4419 open_range.end
4420 } else {
4421 *close_range.start()
4422 };
4423 selection.start = destination;
4424 selection.end = destination;
4425 }
4426 }
4427
4428 self.update_selections(selections, Some(Autoscroll::Fit), cx);
4429 }
4430
4431 pub fn undo_selection(&mut self, _: &UndoSelection, cx: &mut ViewContext<Self>) {
4432 self.end_selection(cx);
4433 self.selection_history.mode = SelectionHistoryMode::Undoing;
4434 if let Some(entry) = self.selection_history.undo_stack.pop_back() {
4435 self.set_selections(entry.selections, None, true, cx);
4436 self.select_next_state = entry.select_next_state;
4437 self.add_selections_state = entry.add_selections_state;
4438 self.request_autoscroll(Autoscroll::Newest, cx);
4439 }
4440 self.selection_history.mode = SelectionHistoryMode::Normal;
4441 }
4442
4443 pub fn redo_selection(&mut self, _: &RedoSelection, cx: &mut ViewContext<Self>) {
4444 self.end_selection(cx);
4445 self.selection_history.mode = SelectionHistoryMode::Redoing;
4446 if let Some(entry) = self.selection_history.redo_stack.pop_back() {
4447 self.set_selections(entry.selections, None, true, cx);
4448 self.select_next_state = entry.select_next_state;
4449 self.add_selections_state = entry.add_selections_state;
4450 self.request_autoscroll(Autoscroll::Newest, cx);
4451 }
4452 self.selection_history.mode = SelectionHistoryMode::Normal;
4453 }
4454
4455 pub fn go_to_diagnostic(
4456 &mut self,
4457 &GoToDiagnostic(direction): &GoToDiagnostic,
4458 cx: &mut ViewContext<Self>,
4459 ) {
4460 let buffer = self.buffer.read(cx).snapshot(cx);
4461 let selection = self.newest_selection_with_snapshot::<usize>(&buffer);
4462 let mut active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
4463 active_diagnostics
4464 .primary_range
4465 .to_offset(&buffer)
4466 .to_inclusive()
4467 });
4468 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
4469 if active_primary_range.contains(&selection.head()) {
4470 *active_primary_range.end()
4471 } else {
4472 selection.head()
4473 }
4474 } else {
4475 selection.head()
4476 };
4477
4478 loop {
4479 let mut diagnostics = if direction == Direction::Prev {
4480 buffer.diagnostics_in_range::<_, usize>(0..search_start, true)
4481 } else {
4482 buffer.diagnostics_in_range::<_, usize>(search_start..buffer.len(), false)
4483 };
4484 let group = diagnostics.find_map(|entry| {
4485 if entry.diagnostic.is_primary
4486 && entry.diagnostic.severity <= DiagnosticSeverity::WARNING
4487 && !entry.range.is_empty()
4488 && Some(entry.range.end) != active_primary_range.as_ref().map(|r| *r.end())
4489 {
4490 Some((entry.range, entry.diagnostic.group_id))
4491 } else {
4492 None
4493 }
4494 });
4495
4496 if let Some((primary_range, group_id)) = group {
4497 self.activate_diagnostics(group_id, cx);
4498 self.update_selections(
4499 vec![Selection {
4500 id: selection.id,
4501 start: primary_range.start,
4502 end: primary_range.start,
4503 reversed: false,
4504 goal: SelectionGoal::None,
4505 }],
4506 Some(Autoscroll::Center),
4507 cx,
4508 );
4509 break;
4510 } else {
4511 // Cycle around to the start of the buffer, potentially moving back to the start of
4512 // the currently active diagnostic.
4513 active_primary_range.take();
4514 if direction == Direction::Prev {
4515 if search_start == buffer.len() {
4516 break;
4517 } else {
4518 search_start = buffer.len();
4519 }
4520 } else {
4521 if search_start == 0 {
4522 break;
4523 } else {
4524 search_start = 0;
4525 }
4526 }
4527 }
4528 }
4529 }
4530
4531 pub fn go_to_definition(
4532 workspace: &mut Workspace,
4533 _: &GoToDefinition,
4534 cx: &mut ViewContext<Workspace>,
4535 ) {
4536 let active_item = workspace.active_item(cx);
4537 let editor_handle = if let Some(editor) = active_item
4538 .as_ref()
4539 .and_then(|item| item.act_as::<Self>(cx))
4540 {
4541 editor
4542 } else {
4543 return;
4544 };
4545
4546 let editor = editor_handle.read(cx);
4547 let head = editor.newest_selection::<usize>(cx).head();
4548 let (buffer, head) =
4549 if let Some(text_anchor) = editor.buffer.read(cx).text_anchor_for_position(head, cx) {
4550 text_anchor
4551 } else {
4552 return;
4553 };
4554
4555 let project = workspace.project().clone();
4556 let definitions = project.update(cx, |project, cx| project.definition(&buffer, head, cx));
4557 cx.spawn(|workspace, mut cx| async move {
4558 let definitions = definitions.await?;
4559 workspace.update(&mut cx, |workspace, cx| {
4560 let nav_history = workspace.active_pane().read(cx).nav_history().clone();
4561 for definition in definitions {
4562 let range = definition.range.to_offset(definition.buffer.read(cx));
4563
4564 let target_editor_handle = workspace.open_project_item(definition.buffer, cx);
4565 target_editor_handle.update(cx, |target_editor, cx| {
4566 // When selecting a definition in a different buffer, disable the nav history
4567 // to avoid creating a history entry at the previous cursor location.
4568 if editor_handle != target_editor_handle {
4569 nav_history.borrow_mut().disable();
4570 }
4571 target_editor.select_ranges([range], Some(Autoscroll::Center), cx);
4572 nav_history.borrow_mut().enable();
4573 });
4574 }
4575 });
4576
4577 Ok::<(), anyhow::Error>(())
4578 })
4579 .detach_and_log_err(cx);
4580 }
4581
4582 pub fn find_all_references(
4583 workspace: &mut Workspace,
4584 _: &FindAllReferences,
4585 cx: &mut ViewContext<Workspace>,
4586 ) -> Option<Task<Result<()>>> {
4587 let active_item = workspace.active_item(cx)?;
4588 let editor_handle = active_item.act_as::<Self>(cx)?;
4589
4590 let editor = editor_handle.read(cx);
4591 let head = editor.newest_selection::<usize>(cx).head();
4592 let (buffer, head) = editor.buffer.read(cx).text_anchor_for_position(head, cx)?;
4593 let replica_id = editor.replica_id(cx);
4594
4595 let project = workspace.project().clone();
4596 let references = project.update(cx, |project, cx| project.references(&buffer, head, cx));
4597 Some(cx.spawn(|workspace, mut cx| async move {
4598 let mut locations = references.await?;
4599 if locations.is_empty() {
4600 return Ok(());
4601 }
4602
4603 locations.sort_by_key(|location| location.buffer.id());
4604 let mut locations = locations.into_iter().peekable();
4605 let mut ranges_to_highlight = Vec::new();
4606
4607 let excerpt_buffer = cx.add_model(|cx| {
4608 let mut symbol_name = None;
4609 let mut multibuffer = MultiBuffer::new(replica_id);
4610 while let Some(location) = locations.next() {
4611 let buffer = location.buffer.read(cx);
4612 let mut ranges_for_buffer = Vec::new();
4613 let range = location.range.to_offset(buffer);
4614 ranges_for_buffer.push(range.clone());
4615 if symbol_name.is_none() {
4616 symbol_name = Some(buffer.text_for_range(range).collect::<String>());
4617 }
4618
4619 while let Some(next_location) = locations.peek() {
4620 if next_location.buffer == location.buffer {
4621 ranges_for_buffer.push(next_location.range.to_offset(buffer));
4622 locations.next();
4623 } else {
4624 break;
4625 }
4626 }
4627
4628 ranges_for_buffer.sort_by_key(|range| (range.start, Reverse(range.end)));
4629 ranges_to_highlight.extend(multibuffer.push_excerpts_with_context_lines(
4630 location.buffer.clone(),
4631 ranges_for_buffer,
4632 1,
4633 cx,
4634 ));
4635 }
4636 multibuffer.with_title(format!("References to `{}`", symbol_name.unwrap()))
4637 });
4638
4639 workspace.update(&mut cx, |workspace, cx| {
4640 let editor =
4641 cx.add_view(|cx| Editor::for_multibuffer(excerpt_buffer, Some(project), cx));
4642 editor.update(cx, |editor, cx| {
4643 let color = editor.style(cx).highlighted_line_background;
4644 editor.highlight_background::<Self>(ranges_to_highlight, color, cx);
4645 });
4646 workspace.add_item(Box::new(editor), cx);
4647 });
4648
4649 Ok(())
4650 }))
4651 }
4652
4653 pub fn rename(&mut self, _: &Rename, cx: &mut ViewContext<Self>) -> Option<Task<Result<()>>> {
4654 use language::ToOffset as _;
4655
4656 let project = self.project.clone()?;
4657 let selection = self.newest_anchor_selection().clone();
4658 let (cursor_buffer, cursor_buffer_position) = self
4659 .buffer
4660 .read(cx)
4661 .text_anchor_for_position(selection.head(), cx)?;
4662 let (tail_buffer, _) = self
4663 .buffer
4664 .read(cx)
4665 .text_anchor_for_position(selection.tail(), cx)?;
4666 if tail_buffer != cursor_buffer {
4667 return None;
4668 }
4669
4670 let snapshot = cursor_buffer.read(cx).snapshot();
4671 let cursor_buffer_offset = cursor_buffer_position.to_offset(&snapshot);
4672 let prepare_rename = project.update(cx, |project, cx| {
4673 project.prepare_rename(cursor_buffer, cursor_buffer_offset, cx)
4674 });
4675
4676 Some(cx.spawn(|this, mut cx| async move {
4677 if let Some(rename_range) = prepare_rename.await? {
4678 let rename_buffer_range = rename_range.to_offset(&snapshot);
4679 let cursor_offset_in_rename_range =
4680 cursor_buffer_offset.saturating_sub(rename_buffer_range.start);
4681
4682 this.update(&mut cx, |this, cx| {
4683 this.take_rename(false, cx);
4684 let style = this.style(cx);
4685 let buffer = this.buffer.read(cx).read(cx);
4686 let cursor_offset = selection.head().to_offset(&buffer);
4687 let rename_start = cursor_offset.saturating_sub(cursor_offset_in_rename_range);
4688 let rename_end = rename_start + rename_buffer_range.len();
4689 let range = buffer.anchor_before(rename_start)..buffer.anchor_after(rename_end);
4690 let mut old_highlight_id = None;
4691 let old_name = buffer
4692 .chunks(rename_start..rename_end, true)
4693 .map(|chunk| {
4694 if old_highlight_id.is_none() {
4695 old_highlight_id = chunk.syntax_highlight_id;
4696 }
4697 chunk.text
4698 })
4699 .collect();
4700
4701 drop(buffer);
4702
4703 // Position the selection in the rename editor so that it matches the current selection.
4704 this.show_local_selections = false;
4705 let rename_editor = cx.add_view(|cx| {
4706 let mut editor = Editor::single_line(None, cx);
4707 if let Some(old_highlight_id) = old_highlight_id {
4708 editor.override_text_style =
4709 Some(Box::new(move |style| old_highlight_id.style(&style.syntax)));
4710 }
4711 editor
4712 .buffer
4713 .update(cx, |buffer, cx| buffer.edit([0..0], &old_name, cx));
4714 editor.select_all(&SelectAll, cx);
4715 editor
4716 });
4717
4718 let ranges = this
4719 .clear_background_highlights::<DocumentHighlightWrite>(cx)
4720 .into_iter()
4721 .flat_map(|(_, ranges)| ranges)
4722 .chain(
4723 this.clear_background_highlights::<DocumentHighlightRead>(cx)
4724 .into_iter()
4725 .flat_map(|(_, ranges)| ranges),
4726 )
4727 .collect();
4728
4729 this.highlight_text::<Rename>(
4730 ranges,
4731 HighlightStyle {
4732 fade_out: Some(style.rename_fade),
4733 ..Default::default()
4734 },
4735 cx,
4736 );
4737 cx.focus(&rename_editor);
4738 let block_id = this.insert_blocks(
4739 [BlockProperties {
4740 position: range.start.clone(),
4741 height: 1,
4742 render: Arc::new({
4743 let editor = rename_editor.clone();
4744 move |cx: &BlockContext| {
4745 ChildView::new(editor.clone())
4746 .contained()
4747 .with_padding_left(cx.anchor_x)
4748 .boxed()
4749 }
4750 }),
4751 disposition: BlockDisposition::Below,
4752 }],
4753 cx,
4754 )[0];
4755 this.pending_rename = Some(RenameState {
4756 range,
4757 old_name,
4758 editor: rename_editor,
4759 block_id,
4760 });
4761 });
4762 }
4763
4764 Ok(())
4765 }))
4766 }
4767
4768 pub fn confirm_rename(
4769 workspace: &mut Workspace,
4770 _: &ConfirmRename,
4771 cx: &mut ViewContext<Workspace>,
4772 ) -> Option<Task<Result<()>>> {
4773 let editor = workspace.active_item(cx)?.act_as::<Editor>(cx)?;
4774
4775 let (buffer, range, old_name, new_name) = editor.update(cx, |editor, cx| {
4776 let rename = editor.take_rename(false, cx)?;
4777 let buffer = editor.buffer.read(cx);
4778 let (start_buffer, start) =
4779 buffer.text_anchor_for_position(rename.range.start.clone(), cx)?;
4780 let (end_buffer, end) =
4781 buffer.text_anchor_for_position(rename.range.end.clone(), cx)?;
4782 if start_buffer == end_buffer {
4783 let new_name = rename.editor.read(cx).text(cx);
4784 Some((start_buffer, start..end, rename.old_name, new_name))
4785 } else {
4786 None
4787 }
4788 })?;
4789
4790 let rename = workspace.project().clone().update(cx, |project, cx| {
4791 project.perform_rename(
4792 buffer.clone(),
4793 range.start.clone(),
4794 new_name.clone(),
4795 true,
4796 cx,
4797 )
4798 });
4799
4800 Some(cx.spawn(|workspace, mut cx| async move {
4801 let project_transaction = rename.await?;
4802 Self::open_project_transaction(
4803 editor.clone(),
4804 workspace,
4805 project_transaction,
4806 format!("Rename: {} → {}", old_name, new_name),
4807 cx.clone(),
4808 )
4809 .await?;
4810
4811 editor.update(&mut cx, |editor, cx| {
4812 editor.refresh_document_highlights(cx);
4813 });
4814 Ok(())
4815 }))
4816 }
4817
4818 fn take_rename(
4819 &mut self,
4820 moving_cursor: bool,
4821 cx: &mut ViewContext<Self>,
4822 ) -> Option<RenameState> {
4823 let rename = self.pending_rename.take()?;
4824 self.remove_blocks([rename.block_id].into_iter().collect(), cx);
4825 self.clear_text_highlights::<Rename>(cx);
4826 self.show_local_selections = true;
4827
4828 if moving_cursor {
4829 let cursor_in_rename_editor =
4830 rename.editor.read(cx).newest_selection::<usize>(cx).head();
4831
4832 // Update the selection to match the position of the selection inside
4833 // the rename editor.
4834 let snapshot = self.buffer.read(cx).read(cx);
4835 let rename_range = rename.range.to_offset(&snapshot);
4836 let cursor_in_editor = snapshot
4837 .clip_offset(rename_range.start + cursor_in_rename_editor, Bias::Left)
4838 .min(rename_range.end);
4839 drop(snapshot);
4840
4841 self.update_selections(
4842 vec![Selection {
4843 id: self.newest_anchor_selection().id,
4844 start: cursor_in_editor,
4845 end: cursor_in_editor,
4846 reversed: false,
4847 goal: SelectionGoal::None,
4848 }],
4849 None,
4850 cx,
4851 );
4852 }
4853
4854 Some(rename)
4855 }
4856
4857 fn invalidate_rename_range(
4858 &mut self,
4859 buffer: &MultiBufferSnapshot,
4860 cx: &mut ViewContext<Self>,
4861 ) {
4862 if let Some(rename) = self.pending_rename.as_ref() {
4863 if self.selections.len() == 1 {
4864 let head = self.selections[0].head().to_offset(buffer);
4865 let range = rename.range.to_offset(buffer).to_inclusive();
4866 if range.contains(&head) {
4867 return;
4868 }
4869 }
4870 let rename = self.pending_rename.take().unwrap();
4871 self.remove_blocks([rename.block_id].into_iter().collect(), cx);
4872 self.clear_background_highlights::<Rename>(cx);
4873 }
4874 }
4875
4876 #[cfg(any(test, feature = "test-support"))]
4877 pub fn pending_rename(&self) -> Option<&RenameState> {
4878 self.pending_rename.as_ref()
4879 }
4880
4881 fn restart_language_server(&mut self, _: &RestartLanguageServer, cx: &mut ViewContext<Self>) {
4882 if let Some(project) = self.project.clone() {
4883 self.buffer.update(cx, |multi_buffer, cx| {
4884 project.update(cx, |project, cx| {
4885 project.restart_language_servers_for_buffers(multi_buffer.all_buffers(), cx);
4886 });
4887 })
4888 }
4889 }
4890
4891 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
4892 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
4893 let buffer = self.buffer.read(cx).snapshot(cx);
4894 let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
4895 let is_valid = buffer
4896 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone(), false)
4897 .any(|entry| {
4898 entry.diagnostic.is_primary
4899 && !entry.range.is_empty()
4900 && entry.range.start == primary_range_start
4901 && entry.diagnostic.message == active_diagnostics.primary_message
4902 });
4903
4904 if is_valid != active_diagnostics.is_valid {
4905 active_diagnostics.is_valid = is_valid;
4906 let mut new_styles = HashMap::default();
4907 for (block_id, diagnostic) in &active_diagnostics.blocks {
4908 new_styles.insert(
4909 *block_id,
4910 diagnostic_block_renderer(diagnostic.clone(), is_valid),
4911 );
4912 }
4913 self.display_map
4914 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
4915 }
4916 }
4917 }
4918
4919 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) {
4920 self.dismiss_diagnostics(cx);
4921 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
4922 let buffer = self.buffer.read(cx).snapshot(cx);
4923
4924 let mut primary_range = None;
4925 let mut primary_message = None;
4926 let mut group_end = Point::zero();
4927 let diagnostic_group = buffer
4928 .diagnostic_group::<Point>(group_id)
4929 .map(|entry| {
4930 if entry.range.end > group_end {
4931 group_end = entry.range.end;
4932 }
4933 if entry.diagnostic.is_primary {
4934 primary_range = Some(entry.range.clone());
4935 primary_message = Some(entry.diagnostic.message.clone());
4936 }
4937 entry
4938 })
4939 .collect::<Vec<_>>();
4940 let primary_range = primary_range.unwrap();
4941 let primary_message = primary_message.unwrap();
4942 let primary_range =
4943 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
4944
4945 let blocks = display_map
4946 .insert_blocks(
4947 diagnostic_group.iter().map(|entry| {
4948 let diagnostic = entry.diagnostic.clone();
4949 let message_height = diagnostic.message.lines().count() as u8;
4950 BlockProperties {
4951 position: buffer.anchor_after(entry.range.start),
4952 height: message_height,
4953 render: diagnostic_block_renderer(diagnostic, true),
4954 disposition: BlockDisposition::Below,
4955 }
4956 }),
4957 cx,
4958 )
4959 .into_iter()
4960 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
4961 .collect();
4962
4963 Some(ActiveDiagnosticGroup {
4964 primary_range,
4965 primary_message,
4966 blocks,
4967 is_valid: true,
4968 })
4969 });
4970 }
4971
4972 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
4973 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
4974 self.display_map.update(cx, |display_map, cx| {
4975 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
4976 });
4977 cx.notify();
4978 }
4979 }
4980
4981 fn build_columnar_selection(
4982 &mut self,
4983 display_map: &DisplaySnapshot,
4984 row: u32,
4985 columns: &Range<u32>,
4986 reversed: bool,
4987 ) -> Option<Selection<Point>> {
4988 let is_empty = columns.start == columns.end;
4989 let line_len = display_map.line_len(row);
4990 if columns.start < line_len || (is_empty && columns.start == line_len) {
4991 let start = DisplayPoint::new(row, columns.start);
4992 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
4993 Some(Selection {
4994 id: post_inc(&mut self.next_selection_id),
4995 start: start.to_point(display_map),
4996 end: end.to_point(display_map),
4997 reversed,
4998 goal: SelectionGoal::ColumnRange {
4999 start: columns.start,
5000 end: columns.end,
5001 },
5002 })
5003 } else {
5004 None
5005 }
5006 }
5007
5008 pub fn local_selections_in_range(
5009 &self,
5010 range: Range<Anchor>,
5011 display_map: &DisplaySnapshot,
5012 ) -> Vec<Selection<Point>> {
5013 let buffer = &display_map.buffer_snapshot;
5014
5015 let start_ix = match self
5016 .selections
5017 .binary_search_by(|probe| probe.end.cmp(&range.start, &buffer))
5018 {
5019 Ok(ix) | Err(ix) => ix,
5020 };
5021 let end_ix = match self
5022 .selections
5023 .binary_search_by(|probe| probe.start.cmp(&range.end, &buffer))
5024 {
5025 Ok(ix) => ix + 1,
5026 Err(ix) => ix,
5027 };
5028
5029 fn point_selection(
5030 selection: &Selection<Anchor>,
5031 buffer: &MultiBufferSnapshot,
5032 ) -> Selection<Point> {
5033 let start = selection.start.to_point(&buffer);
5034 let end = selection.end.to_point(&buffer);
5035 Selection {
5036 id: selection.id,
5037 start,
5038 end,
5039 reversed: selection.reversed,
5040 goal: selection.goal,
5041 }
5042 }
5043
5044 self.selections[start_ix..end_ix]
5045 .iter()
5046 .chain(
5047 self.pending_selection
5048 .as_ref()
5049 .map(|pending| &pending.selection),
5050 )
5051 .map(|s| point_selection(s, &buffer))
5052 .collect()
5053 }
5054
5055 pub fn local_selections<'a, D>(&self, cx: &'a AppContext) -> Vec<Selection<D>>
5056 where
5057 D: 'a + TextDimension + Ord + Sub<D, Output = D>,
5058 {
5059 let buffer = self.buffer.read(cx).snapshot(cx);
5060 let mut selections = self
5061 .resolve_selections::<D, _>(self.selections.iter(), &buffer)
5062 .peekable();
5063
5064 let mut pending_selection = self.pending_selection::<D>(&buffer);
5065
5066 iter::from_fn(move || {
5067 if let Some(pending) = pending_selection.as_mut() {
5068 while let Some(next_selection) = selections.peek() {
5069 if pending.start <= next_selection.end && pending.end >= next_selection.start {
5070 let next_selection = selections.next().unwrap();
5071 if next_selection.start < pending.start {
5072 pending.start = next_selection.start;
5073 }
5074 if next_selection.end > pending.end {
5075 pending.end = next_selection.end;
5076 }
5077 } else if next_selection.end < pending.start {
5078 return selections.next();
5079 } else {
5080 break;
5081 }
5082 }
5083
5084 pending_selection.take()
5085 } else {
5086 selections.next()
5087 }
5088 })
5089 .collect()
5090 }
5091
5092 fn resolve_selections<'a, D, I>(
5093 &self,
5094 selections: I,
5095 snapshot: &MultiBufferSnapshot,
5096 ) -> impl 'a + Iterator<Item = Selection<D>>
5097 where
5098 D: TextDimension + Ord + Sub<D, Output = D>,
5099 I: 'a + IntoIterator<Item = &'a Selection<Anchor>>,
5100 {
5101 let (to_summarize, selections) = selections.into_iter().tee();
5102 let mut summaries = snapshot
5103 .summaries_for_anchors::<D, _>(to_summarize.flat_map(|s| [&s.start, &s.end]))
5104 .into_iter();
5105 selections.map(move |s| Selection {
5106 id: s.id,
5107 start: summaries.next().unwrap(),
5108 end: summaries.next().unwrap(),
5109 reversed: s.reversed,
5110 goal: s.goal,
5111 })
5112 }
5113
5114 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
5115 &self,
5116 snapshot: &MultiBufferSnapshot,
5117 ) -> Option<Selection<D>> {
5118 self.pending_selection
5119 .as_ref()
5120 .map(|pending| self.resolve_selection(&pending.selection, &snapshot))
5121 }
5122
5123 fn resolve_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
5124 &self,
5125 selection: &Selection<Anchor>,
5126 buffer: &MultiBufferSnapshot,
5127 ) -> Selection<D> {
5128 Selection {
5129 id: selection.id,
5130 start: selection.start.summary::<D>(&buffer),
5131 end: selection.end.summary::<D>(&buffer),
5132 reversed: selection.reversed,
5133 goal: selection.goal,
5134 }
5135 }
5136
5137 fn selection_count<'a>(&self) -> usize {
5138 let mut count = self.selections.len();
5139 if self.pending_selection.is_some() {
5140 count += 1;
5141 }
5142 count
5143 }
5144
5145 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
5146 &self,
5147 cx: &AppContext,
5148 ) -> Selection<D> {
5149 let snapshot = self.buffer.read(cx).read(cx);
5150 self.selections
5151 .iter()
5152 .min_by_key(|s| s.id)
5153 .map(|selection| self.resolve_selection(selection, &snapshot))
5154 .or_else(|| self.pending_selection(&snapshot))
5155 .unwrap()
5156 }
5157
5158 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
5159 &self,
5160 cx: &AppContext,
5161 ) -> Selection<D> {
5162 self.resolve_selection(
5163 self.newest_anchor_selection(),
5164 &self.buffer.read(cx).read(cx),
5165 )
5166 }
5167
5168 pub fn newest_selection_with_snapshot<D: TextDimension + Ord + Sub<D, Output = D>>(
5169 &self,
5170 snapshot: &MultiBufferSnapshot,
5171 ) -> Selection<D> {
5172 self.resolve_selection(self.newest_anchor_selection(), snapshot)
5173 }
5174
5175 pub fn newest_anchor_selection(&self) -> &Selection<Anchor> {
5176 self.pending_selection
5177 .as_ref()
5178 .map(|s| &s.selection)
5179 .or_else(|| self.selections.iter().max_by_key(|s| s.id))
5180 .unwrap()
5181 }
5182
5183 pub fn update_selections<T>(
5184 &mut self,
5185 mut selections: Vec<Selection<T>>,
5186 autoscroll: Option<Autoscroll>,
5187 cx: &mut ViewContext<Self>,
5188 ) where
5189 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
5190 {
5191 let buffer = self.buffer.read(cx).snapshot(cx);
5192 selections.sort_unstable_by_key(|s| s.start);
5193
5194 // Merge overlapping selections.
5195 let mut i = 1;
5196 while i < selections.len() {
5197 if selections[i - 1].end >= selections[i].start {
5198 let removed = selections.remove(i);
5199 if removed.start < selections[i - 1].start {
5200 selections[i - 1].start = removed.start;
5201 }
5202 if removed.end > selections[i - 1].end {
5203 selections[i - 1].end = removed.end;
5204 }
5205 } else {
5206 i += 1;
5207 }
5208 }
5209
5210 if let Some(autoscroll) = autoscroll {
5211 self.request_autoscroll(autoscroll, cx);
5212 }
5213
5214 self.set_selections(
5215 Arc::from_iter(selections.into_iter().map(|selection| {
5216 let end_bias = if selection.end > selection.start {
5217 Bias::Left
5218 } else {
5219 Bias::Right
5220 };
5221 Selection {
5222 id: selection.id,
5223 start: buffer.anchor_after(selection.start),
5224 end: buffer.anchor_at(selection.end, end_bias),
5225 reversed: selection.reversed,
5226 goal: selection.goal,
5227 }
5228 })),
5229 None,
5230 true,
5231 cx,
5232 );
5233 }
5234
5235 pub fn set_selections_from_remote(
5236 &mut self,
5237 mut selections: Vec<Selection<Anchor>>,
5238 cx: &mut ViewContext<Self>,
5239 ) {
5240 let buffer = self.buffer.read(cx);
5241 let buffer = buffer.read(cx);
5242 selections.sort_by(|a, b| {
5243 a.start
5244 .cmp(&b.start, &*buffer)
5245 .then_with(|| b.end.cmp(&a.end, &*buffer))
5246 });
5247
5248 // Merge overlapping selections
5249 let mut i = 1;
5250 while i < selections.len() {
5251 if selections[i - 1]
5252 .end
5253 .cmp(&selections[i].start, &*buffer)
5254 .is_ge()
5255 {
5256 let removed = selections.remove(i);
5257 if removed
5258 .start
5259 .cmp(&selections[i - 1].start, &*buffer)
5260 .is_lt()
5261 {
5262 selections[i - 1].start = removed.start;
5263 }
5264 if removed.end.cmp(&selections[i - 1].end, &*buffer).is_gt() {
5265 selections[i - 1].end = removed.end;
5266 }
5267 } else {
5268 i += 1;
5269 }
5270 }
5271
5272 drop(buffer);
5273 self.set_selections(selections.into(), None, false, cx);
5274 }
5275
5276 /// Compute new ranges for any selections that were located in excerpts that have
5277 /// since been removed.
5278 ///
5279 /// Returns a `HashMap` indicating which selections whose former head position
5280 /// was no longer present. The keys of the map are selection ids. The values are
5281 /// the id of the new excerpt where the head of the selection has been moved.
5282 pub fn refresh_selections(&mut self, cx: &mut ViewContext<Self>) -> HashMap<usize, ExcerptId> {
5283 let snapshot = self.buffer.read(cx).read(cx);
5284 let mut selections_with_lost_position = HashMap::default();
5285
5286 let mut pending_selection = self.pending_selection.take();
5287 if let Some(pending) = pending_selection.as_mut() {
5288 let anchors =
5289 snapshot.refresh_anchors([&pending.selection.start, &pending.selection.end]);
5290 let (_, start, kept_start) = anchors[0].clone();
5291 let (_, end, kept_end) = anchors[1].clone();
5292 let kept_head = if pending.selection.reversed {
5293 kept_start
5294 } else {
5295 kept_end
5296 };
5297 if !kept_head {
5298 selections_with_lost_position.insert(
5299 pending.selection.id,
5300 pending.selection.head().excerpt_id.clone(),
5301 );
5302 }
5303
5304 pending.selection.start = start;
5305 pending.selection.end = end;
5306 }
5307
5308 let anchors_with_status = snapshot.refresh_anchors(
5309 self.selections
5310 .iter()
5311 .flat_map(|selection| [&selection.start, &selection.end]),
5312 );
5313 self.selections = anchors_with_status
5314 .chunks(2)
5315 .map(|selection_anchors| {
5316 let (anchor_ix, start, kept_start) = selection_anchors[0].clone();
5317 let (_, end, kept_end) = selection_anchors[1].clone();
5318 let selection = &self.selections[anchor_ix / 2];
5319 let kept_head = if selection.reversed {
5320 kept_start
5321 } else {
5322 kept_end
5323 };
5324 if !kept_head {
5325 selections_with_lost_position
5326 .insert(selection.id, selection.head().excerpt_id.clone());
5327 }
5328
5329 Selection {
5330 id: selection.id,
5331 start,
5332 end,
5333 reversed: selection.reversed,
5334 goal: selection.goal,
5335 }
5336 })
5337 .collect();
5338 drop(snapshot);
5339
5340 let new_selections = self.local_selections::<usize>(cx);
5341 if !new_selections.is_empty() {
5342 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
5343 }
5344 self.pending_selection = pending_selection;
5345
5346 selections_with_lost_position
5347 }
5348
5349 fn set_selections(
5350 &mut self,
5351 selections: Arc<[Selection<Anchor>]>,
5352 pending_selection: Option<PendingSelection>,
5353 local: bool,
5354 cx: &mut ViewContext<Self>,
5355 ) {
5356 assert!(
5357 !selections.is_empty() || pending_selection.is_some(),
5358 "must have at least one selection"
5359 );
5360
5361 let old_cursor_position = self.newest_anchor_selection().head();
5362
5363 self.push_to_selection_history();
5364 self.selections = selections;
5365 self.pending_selection = pending_selection;
5366 if self.focused && self.leader_replica_id.is_none() {
5367 self.buffer.update(cx, |buffer, cx| {
5368 buffer.set_active_selections(&self.selections, cx)
5369 });
5370 }
5371
5372 let display_map = self
5373 .display_map
5374 .update(cx, |display_map, cx| display_map.snapshot(cx));
5375 let buffer = &display_map.buffer_snapshot;
5376 self.add_selections_state = None;
5377 self.select_next_state = None;
5378 self.select_larger_syntax_node_stack.clear();
5379 self.autoclose_stack.invalidate(&self.selections, &buffer);
5380 self.snippet_stack.invalidate(&self.selections, &buffer);
5381 self.invalidate_rename_range(&buffer, cx);
5382
5383 let new_cursor_position = self.newest_anchor_selection().head();
5384
5385 self.push_to_nav_history(
5386 old_cursor_position.clone(),
5387 Some(new_cursor_position.to_point(&buffer)),
5388 cx,
5389 );
5390
5391 if local {
5392 let completion_menu = match self.context_menu.as_mut() {
5393 Some(ContextMenu::Completions(menu)) => Some(menu),
5394 _ => {
5395 self.context_menu.take();
5396 None
5397 }
5398 };
5399
5400 if let Some(completion_menu) = completion_menu {
5401 let cursor_position = new_cursor_position.to_offset(&buffer);
5402 let (word_range, kind) =
5403 buffer.surrounding_word(completion_menu.initial_position.clone());
5404 if kind == Some(CharKind::Word)
5405 && word_range.to_inclusive().contains(&cursor_position)
5406 {
5407 let query = Self::completion_query(&buffer, cursor_position);
5408 cx.background()
5409 .block(completion_menu.filter(query.as_deref(), cx.background().clone()));
5410 self.show_completions(&ShowCompletions, cx);
5411 } else {
5412 self.hide_context_menu(cx);
5413 }
5414 }
5415
5416 if old_cursor_position.to_display_point(&display_map).row()
5417 != new_cursor_position.to_display_point(&display_map).row()
5418 {
5419 self.available_code_actions.take();
5420 }
5421 self.refresh_code_actions(cx);
5422 self.refresh_document_highlights(cx);
5423 }
5424
5425 self.pause_cursor_blinking(cx);
5426 cx.emit(Event::SelectionsChanged { local });
5427 }
5428
5429 fn push_to_selection_history(&mut self) {
5430 self.selection_history.push(SelectionHistoryEntry {
5431 selections: self.selections.clone(),
5432 select_next_state: self.select_next_state.clone(),
5433 add_selections_state: self.add_selections_state.clone(),
5434 });
5435 }
5436
5437 pub fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
5438 self.autoscroll_request = Some((autoscroll, true));
5439 cx.notify();
5440 }
5441
5442 fn request_autoscroll_remotely(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
5443 self.autoscroll_request = Some((autoscroll, false));
5444 cx.notify();
5445 }
5446
5447 pub fn transact(
5448 &mut self,
5449 cx: &mut ViewContext<Self>,
5450 update: impl FnOnce(&mut Self, &mut ViewContext<Self>),
5451 ) {
5452 self.start_transaction_at(Instant::now(), cx);
5453 update(self, cx);
5454 self.end_transaction_at(Instant::now(), cx);
5455 }
5456
5457 fn start_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
5458 self.end_selection(cx);
5459 if let Some(tx_id) = self
5460 .buffer
5461 .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
5462 {
5463 self.selection_history
5464 .insert_transaction(tx_id, self.selections.clone());
5465 }
5466 }
5467
5468 fn end_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
5469 if let Some(tx_id) = self
5470 .buffer
5471 .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
5472 {
5473 if let Some((_, end_selections)) = self.selection_history.transaction_mut(tx_id) {
5474 *end_selections = Some(self.selections.clone());
5475 } else {
5476 log::error!("unexpectedly ended a transaction that wasn't started by this editor");
5477 }
5478
5479 cx.emit(Event::Edited);
5480 }
5481 }
5482
5483 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
5484 log::info!("Editor::page_up");
5485 }
5486
5487 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
5488 log::info!("Editor::page_down");
5489 }
5490
5491 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
5492 let mut fold_ranges = Vec::new();
5493
5494 let selections = self.local_selections::<Point>(cx);
5495 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
5496 for selection in selections {
5497 let range = selection.display_range(&display_map).sorted();
5498 let buffer_start_row = range.start.to_point(&display_map).row;
5499
5500 for row in (0..=range.end.row()).rev() {
5501 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
5502 let fold_range = self.foldable_range_for_line(&display_map, row);
5503 if fold_range.end.row >= buffer_start_row {
5504 fold_ranges.push(fold_range);
5505 if row <= range.start.row() {
5506 break;
5507 }
5508 }
5509 }
5510 }
5511 }
5512
5513 self.fold_ranges(fold_ranges, cx);
5514 }
5515
5516 pub fn unfold_lines(&mut self, _: &UnfoldLines, cx: &mut ViewContext<Self>) {
5517 let selections = self.local_selections::<Point>(cx);
5518 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
5519 let buffer = &display_map.buffer_snapshot;
5520 let ranges = selections
5521 .iter()
5522 .map(|s| {
5523 let range = s.display_range(&display_map).sorted();
5524 let mut start = range.start.to_point(&display_map);
5525 let mut end = range.end.to_point(&display_map);
5526 start.column = 0;
5527 end.column = buffer.line_len(end.row);
5528 start..end
5529 })
5530 .collect::<Vec<_>>();
5531 self.unfold_ranges(ranges, true, cx);
5532 }
5533
5534 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
5535 let max_point = display_map.max_point();
5536 if display_row >= max_point.row() {
5537 false
5538 } else {
5539 let (start_indent, is_blank) = display_map.line_indent(display_row);
5540 if is_blank {
5541 false
5542 } else {
5543 for display_row in display_row + 1..=max_point.row() {
5544 let (indent, is_blank) = display_map.line_indent(display_row);
5545 if !is_blank {
5546 return indent > start_indent;
5547 }
5548 }
5549 false
5550 }
5551 }
5552 }
5553
5554 fn foldable_range_for_line(
5555 &self,
5556 display_map: &DisplaySnapshot,
5557 start_row: u32,
5558 ) -> Range<Point> {
5559 let max_point = display_map.max_point();
5560
5561 let (start_indent, _) = display_map.line_indent(start_row);
5562 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
5563 let mut end = None;
5564 for row in start_row + 1..=max_point.row() {
5565 let (indent, is_blank) = display_map.line_indent(row);
5566 if !is_blank && indent <= start_indent {
5567 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
5568 break;
5569 }
5570 }
5571
5572 let end = end.unwrap_or(max_point);
5573 return start.to_point(display_map)..end.to_point(display_map);
5574 }
5575
5576 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
5577 let selections = self.local_selections::<Point>(cx);
5578 let ranges = selections.into_iter().map(|s| s.start..s.end);
5579 self.fold_ranges(ranges, cx);
5580 }
5581
5582 pub fn fold_ranges<T: ToOffset>(
5583 &mut self,
5584 ranges: impl IntoIterator<Item = Range<T>>,
5585 cx: &mut ViewContext<Self>,
5586 ) {
5587 let mut ranges = ranges.into_iter().peekable();
5588 if ranges.peek().is_some() {
5589 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
5590 self.request_autoscroll(Autoscroll::Fit, cx);
5591 cx.notify();
5592 }
5593 }
5594
5595 pub fn unfold_ranges<T: ToOffset>(
5596 &mut self,
5597 ranges: impl IntoIterator<Item = Range<T>>,
5598 inclusive: bool,
5599 cx: &mut ViewContext<Self>,
5600 ) {
5601 let mut ranges = ranges.into_iter().peekable();
5602 if ranges.peek().is_some() {
5603 self.display_map
5604 .update(cx, |map, cx| map.unfold(ranges, inclusive, cx));
5605 self.request_autoscroll(Autoscroll::Fit, cx);
5606 cx.notify();
5607 }
5608 }
5609
5610 pub fn insert_blocks(
5611 &mut self,
5612 blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
5613 cx: &mut ViewContext<Self>,
5614 ) -> Vec<BlockId> {
5615 let blocks = self
5616 .display_map
5617 .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
5618 self.request_autoscroll(Autoscroll::Fit, cx);
5619 blocks
5620 }
5621
5622 pub fn replace_blocks(
5623 &mut self,
5624 blocks: HashMap<BlockId, RenderBlock>,
5625 cx: &mut ViewContext<Self>,
5626 ) {
5627 self.display_map
5628 .update(cx, |display_map, _| display_map.replace_blocks(blocks));
5629 self.request_autoscroll(Autoscroll::Fit, cx);
5630 }
5631
5632 pub fn remove_blocks(&mut self, block_ids: HashSet<BlockId>, cx: &mut ViewContext<Self>) {
5633 self.display_map.update(cx, |display_map, cx| {
5634 display_map.remove_blocks(block_ids, cx)
5635 });
5636 }
5637
5638 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
5639 self.display_map
5640 .update(cx, |map, cx| map.snapshot(cx))
5641 .longest_row()
5642 }
5643
5644 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
5645 self.display_map
5646 .update(cx, |map, cx| map.snapshot(cx))
5647 .max_point()
5648 }
5649
5650 pub fn text(&self, cx: &AppContext) -> String {
5651 self.buffer.read(cx).read(cx).text()
5652 }
5653
5654 pub fn set_text(&mut self, text: impl Into<String>, cx: &mut ViewContext<Self>) {
5655 self.transact(cx, |this, cx| {
5656 this.buffer
5657 .read(cx)
5658 .as_singleton()
5659 .expect("you can only call set_text on editors for singleton buffers")
5660 .update(cx, |buffer, cx| buffer.set_text(text, cx));
5661 });
5662 }
5663
5664 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
5665 self.display_map
5666 .update(cx, |map, cx| map.snapshot(cx))
5667 .text()
5668 }
5669
5670 pub fn soft_wrap_mode(&self, cx: &AppContext) -> SoftWrap {
5671 let language = self.language(cx);
5672 let settings = cx.global::<Settings>();
5673 let mode = self
5674 .soft_wrap_mode_override
5675 .unwrap_or_else(|| settings.soft_wrap(language));
5676 match mode {
5677 settings::SoftWrap::None => SoftWrap::None,
5678 settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
5679 settings::SoftWrap::PreferredLineLength => {
5680 SoftWrap::Column(settings.preferred_line_length(language))
5681 }
5682 }
5683 }
5684
5685 pub fn set_soft_wrap_mode(&mut self, mode: settings::SoftWrap, cx: &mut ViewContext<Self>) {
5686 self.soft_wrap_mode_override = Some(mode);
5687 cx.notify();
5688 }
5689
5690 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
5691 self.display_map
5692 .update(cx, |map, cx| map.set_wrap_width(width, cx))
5693 }
5694
5695 pub fn highlight_rows(&mut self, rows: Option<Range<u32>>) {
5696 self.highlighted_rows = rows;
5697 }
5698
5699 pub fn highlighted_rows(&self) -> Option<Range<u32>> {
5700 self.highlighted_rows.clone()
5701 }
5702
5703 pub fn highlight_background<T: 'static>(
5704 &mut self,
5705 ranges: Vec<Range<Anchor>>,
5706 color: Color,
5707 cx: &mut ViewContext<Self>,
5708 ) {
5709 self.background_highlights
5710 .insert(TypeId::of::<T>(), (color, ranges));
5711 cx.notify();
5712 }
5713
5714 pub fn clear_background_highlights<T: 'static>(
5715 &mut self,
5716 cx: &mut ViewContext<Self>,
5717 ) -> Option<(Color, Vec<Range<Anchor>>)> {
5718 cx.notify();
5719 self.background_highlights.remove(&TypeId::of::<T>())
5720 }
5721
5722 #[cfg(feature = "test-support")]
5723 pub fn all_background_highlights(
5724 &mut self,
5725 cx: &mut ViewContext<Self>,
5726 ) -> Vec<(Range<DisplayPoint>, Color)> {
5727 let snapshot = self.snapshot(cx);
5728 let buffer = &snapshot.buffer_snapshot;
5729 let start = buffer.anchor_before(0);
5730 let end = buffer.anchor_after(buffer.len());
5731 self.background_highlights_in_range(start..end, &snapshot)
5732 }
5733
5734 pub fn background_highlights_for_type<T: 'static>(&self) -> Option<(Color, &[Range<Anchor>])> {
5735 self.background_highlights
5736 .get(&TypeId::of::<T>())
5737 .map(|(color, ranges)| (*color, ranges.as_slice()))
5738 }
5739
5740 pub fn background_highlights_in_range(
5741 &self,
5742 search_range: Range<Anchor>,
5743 display_snapshot: &DisplaySnapshot,
5744 ) -> Vec<(Range<DisplayPoint>, Color)> {
5745 let mut results = Vec::new();
5746 let buffer = &display_snapshot.buffer_snapshot;
5747 for (color, ranges) in self.background_highlights.values() {
5748 let start_ix = match ranges.binary_search_by(|probe| {
5749 let cmp = probe.end.cmp(&search_range.start, &buffer);
5750 if cmp.is_gt() {
5751 Ordering::Greater
5752 } else {
5753 Ordering::Less
5754 }
5755 }) {
5756 Ok(i) | Err(i) => i,
5757 };
5758 for range in &ranges[start_ix..] {
5759 if range.start.cmp(&search_range.end, &buffer).is_ge() {
5760 break;
5761 }
5762 let start = range
5763 .start
5764 .to_point(buffer)
5765 .to_display_point(display_snapshot);
5766 let end = range
5767 .end
5768 .to_point(buffer)
5769 .to_display_point(display_snapshot);
5770 results.push((start..end, *color))
5771 }
5772 }
5773 results
5774 }
5775
5776 pub fn highlight_text<T: 'static>(
5777 &mut self,
5778 ranges: Vec<Range<Anchor>>,
5779 style: HighlightStyle,
5780 cx: &mut ViewContext<Self>,
5781 ) {
5782 self.display_map.update(cx, |map, _| {
5783 map.highlight_text(TypeId::of::<T>(), ranges, style)
5784 });
5785 cx.notify();
5786 }
5787
5788 pub fn clear_text_highlights<T: 'static>(
5789 &mut self,
5790 cx: &mut ViewContext<Self>,
5791 ) -> Option<Arc<(HighlightStyle, Vec<Range<Anchor>>)>> {
5792 cx.notify();
5793 self.display_map
5794 .update(cx, |map, _| map.clear_text_highlights(TypeId::of::<T>()))
5795 }
5796
5797 fn next_blink_epoch(&mut self) -> usize {
5798 self.blink_epoch += 1;
5799 self.blink_epoch
5800 }
5801
5802 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
5803 if !self.focused {
5804 return;
5805 }
5806
5807 self.show_local_cursors = true;
5808 cx.notify();
5809
5810 let epoch = self.next_blink_epoch();
5811 cx.spawn(|this, mut cx| {
5812 let this = this.downgrade();
5813 async move {
5814 Timer::after(CURSOR_BLINK_INTERVAL).await;
5815 if let Some(this) = this.upgrade(&cx) {
5816 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
5817 }
5818 }
5819 })
5820 .detach();
5821 }
5822
5823 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
5824 if epoch == self.blink_epoch {
5825 self.blinking_paused = false;
5826 self.blink_cursors(epoch, cx);
5827 }
5828 }
5829
5830 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
5831 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
5832 self.show_local_cursors = !self.show_local_cursors;
5833 cx.notify();
5834
5835 let epoch = self.next_blink_epoch();
5836 cx.spawn(|this, mut cx| {
5837 let this = this.downgrade();
5838 async move {
5839 Timer::after(CURSOR_BLINK_INTERVAL).await;
5840 if let Some(this) = this.upgrade(&cx) {
5841 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
5842 }
5843 }
5844 })
5845 .detach();
5846 }
5847 }
5848
5849 pub fn show_local_cursors(&self) -> bool {
5850 self.show_local_cursors && self.focused
5851 }
5852
5853 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
5854 cx.notify();
5855 }
5856
5857 fn on_buffer_event(
5858 &mut self,
5859 _: ModelHandle<MultiBuffer>,
5860 event: &language::Event,
5861 cx: &mut ViewContext<Self>,
5862 ) {
5863 match event {
5864 language::Event::Edited => {
5865 self.refresh_active_diagnostics(cx);
5866 self.refresh_code_actions(cx);
5867 cx.emit(Event::BufferEdited);
5868 }
5869 language::Event::Reparsed => cx.emit(Event::Reparsed),
5870 language::Event::Dirtied => cx.emit(Event::Dirtied),
5871 language::Event::Saved => cx.emit(Event::Saved),
5872 language::Event::FileHandleChanged => cx.emit(Event::TitleChanged),
5873 language::Event::Reloaded => cx.emit(Event::TitleChanged),
5874 language::Event::Closed => cx.emit(Event::Closed),
5875 language::Event::DiagnosticsUpdated => {
5876 self.refresh_active_diagnostics(cx);
5877 }
5878 _ => {}
5879 }
5880 }
5881
5882 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
5883 cx.notify();
5884 }
5885
5886 pub fn set_searchable(&mut self, searchable: bool) {
5887 self.searchable = searchable;
5888 }
5889
5890 pub fn searchable(&self) -> bool {
5891 self.searchable
5892 }
5893
5894 fn open_excerpts(workspace: &mut Workspace, _: &OpenExcerpts, cx: &mut ViewContext<Workspace>) {
5895 let active_item = workspace.active_item(cx);
5896 let editor_handle = if let Some(editor) = active_item
5897 .as_ref()
5898 .and_then(|item| item.act_as::<Self>(cx))
5899 {
5900 editor
5901 } else {
5902 cx.propagate_action();
5903 return;
5904 };
5905
5906 let editor = editor_handle.read(cx);
5907 let buffer = editor.buffer.read(cx);
5908 if buffer.is_singleton() {
5909 cx.propagate_action();
5910 return;
5911 }
5912
5913 let mut new_selections_by_buffer = HashMap::default();
5914 for selection in editor.local_selections::<usize>(cx) {
5915 for (buffer, mut range) in
5916 buffer.range_to_buffer_ranges(selection.start..selection.end, cx)
5917 {
5918 if selection.reversed {
5919 mem::swap(&mut range.start, &mut range.end);
5920 }
5921 new_selections_by_buffer
5922 .entry(buffer)
5923 .or_insert(Vec::new())
5924 .push(range)
5925 }
5926 }
5927
5928 editor_handle.update(cx, |editor, cx| {
5929 editor.push_to_nav_history(editor.newest_anchor_selection().head(), None, cx);
5930 });
5931 let nav_history = workspace.active_pane().read(cx).nav_history().clone();
5932 nav_history.borrow_mut().disable();
5933
5934 // We defer the pane interaction because we ourselves are a workspace item
5935 // and activating a new item causes the pane to call a method on us reentrantly,
5936 // which panics if we're on the stack.
5937 cx.defer(move |workspace, cx| {
5938 workspace.activate_next_pane(cx);
5939
5940 for (buffer, ranges) in new_selections_by_buffer.into_iter() {
5941 let editor = workspace.open_project_item::<Self>(buffer, cx);
5942 editor.update(cx, |editor, cx| {
5943 editor.select_ranges(ranges, Some(Autoscroll::Newest), cx);
5944 });
5945 }
5946
5947 nav_history.borrow_mut().enable();
5948 });
5949 }
5950}
5951
5952impl EditorSnapshot {
5953 pub fn is_focused(&self) -> bool {
5954 self.is_focused
5955 }
5956
5957 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
5958 self.placeholder_text.as_ref()
5959 }
5960
5961 pub fn scroll_position(&self) -> Vector2F {
5962 compute_scroll_position(
5963 &self.display_snapshot,
5964 self.scroll_position,
5965 &self.scroll_top_anchor,
5966 )
5967 }
5968}
5969
5970impl Deref for EditorSnapshot {
5971 type Target = DisplaySnapshot;
5972
5973 fn deref(&self) -> &Self::Target {
5974 &self.display_snapshot
5975 }
5976}
5977
5978fn compute_scroll_position(
5979 snapshot: &DisplaySnapshot,
5980 mut scroll_position: Vector2F,
5981 scroll_top_anchor: &Anchor,
5982) -> Vector2F {
5983 if *scroll_top_anchor != Anchor::min() {
5984 let scroll_top = scroll_top_anchor.to_display_point(snapshot).row() as f32;
5985 scroll_position.set_y(scroll_top + scroll_position.y());
5986 } else {
5987 scroll_position.set_y(0.);
5988 }
5989 scroll_position
5990}
5991
5992#[derive(Copy, Clone, Debug, PartialEq, Eq)]
5993pub enum Event {
5994 Activate,
5995 BufferEdited,
5996 Edited,
5997 Reparsed,
5998 Blurred,
5999 Dirtied,
6000 Saved,
6001 TitleChanged,
6002 SelectionsChanged { local: bool },
6003 ScrollPositionChanged { local: bool },
6004 Closed,
6005}
6006
6007pub struct EditorFocused(pub ViewHandle<Editor>);
6008pub struct EditorBlurred(pub ViewHandle<Editor>);
6009pub struct EditorReleased(pub WeakViewHandle<Editor>);
6010
6011impl Entity for Editor {
6012 type Event = Event;
6013
6014 fn release(&mut self, cx: &mut MutableAppContext) {
6015 cx.emit_global(EditorReleased(self.handle.clone()));
6016 }
6017}
6018
6019impl View for Editor {
6020 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
6021 let style = self.style(cx);
6022 self.display_map.update(cx, |map, cx| {
6023 map.set_font(style.text.font_id, style.text.font_size, cx)
6024 });
6025 EditorElement::new(self.handle.clone(), style.clone(), self.cursor_shape).boxed()
6026 }
6027
6028 fn ui_name() -> &'static str {
6029 "Editor"
6030 }
6031
6032 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
6033 let focused_event = EditorFocused(cx.handle());
6034 cx.emit_global(focused_event);
6035 if let Some(rename) = self.pending_rename.as_ref() {
6036 cx.focus(&rename.editor);
6037 } else {
6038 self.focused = true;
6039 self.blink_cursors(self.blink_epoch, cx);
6040 self.buffer.update(cx, |buffer, cx| {
6041 buffer.finalize_last_transaction(cx);
6042 if self.leader_replica_id.is_none() {
6043 buffer.set_active_selections(&self.selections, cx);
6044 }
6045 });
6046 }
6047 }
6048
6049 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
6050 let blurred_event = EditorBlurred(cx.handle());
6051 cx.emit_global(blurred_event);
6052 self.focused = false;
6053 self.buffer
6054 .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
6055 self.hide_context_menu(cx);
6056 cx.emit(Event::Blurred);
6057 cx.notify();
6058 }
6059
6060 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
6061 let mut context = Self::default_keymap_context();
6062 let mode = match self.mode {
6063 EditorMode::SingleLine => "single_line",
6064 EditorMode::AutoHeight { .. } => "auto_height",
6065 EditorMode::Full => "full",
6066 };
6067 context.map.insert("mode".into(), mode.into());
6068 if self.pending_rename.is_some() {
6069 context.set.insert("renaming".into());
6070 }
6071 match self.context_menu.as_ref() {
6072 Some(ContextMenu::Completions(_)) => {
6073 context.set.insert("showing_completions".into());
6074 }
6075 Some(ContextMenu::CodeActions(_)) => {
6076 context.set.insert("showing_code_actions".into());
6077 }
6078 None => {}
6079 }
6080
6081 for layer in self.keymap_context_layers.values() {
6082 context.extend(layer);
6083 }
6084
6085 context
6086 }
6087}
6088
6089fn build_style(
6090 settings: &Settings,
6091 get_field_editor_theme: Option<GetFieldEditorTheme>,
6092 override_text_style: Option<&OverrideTextStyle>,
6093 cx: &AppContext,
6094) -> EditorStyle {
6095 let font_cache = cx.font_cache();
6096
6097 let mut theme = settings.theme.editor.clone();
6098 let mut style = if let Some(get_field_editor_theme) = get_field_editor_theme {
6099 let field_editor_theme = get_field_editor_theme(&settings.theme);
6100 theme.text_color = field_editor_theme.text.color;
6101 theme.selection = field_editor_theme.selection;
6102 theme.background = field_editor_theme
6103 .container
6104 .background_color
6105 .unwrap_or_default();
6106 EditorStyle {
6107 text: field_editor_theme.text,
6108 placeholder_text: field_editor_theme.placeholder_text,
6109 theme,
6110 }
6111 } else {
6112 let font_family_id = settings.buffer_font_family;
6113 let font_family_name = cx.font_cache().family_name(font_family_id).unwrap();
6114 let font_properties = Default::default();
6115 let font_id = font_cache
6116 .select_font(font_family_id, &font_properties)
6117 .unwrap();
6118 let font_size = settings.buffer_font_size;
6119 EditorStyle {
6120 text: TextStyle {
6121 color: settings.theme.editor.text_color,
6122 font_family_name,
6123 font_family_id,
6124 font_id,
6125 font_size,
6126 font_properties,
6127 underline: Default::default(),
6128 },
6129 placeholder_text: None,
6130 theme,
6131 }
6132 };
6133
6134 if let Some(highlight_style) = override_text_style.and_then(|build_style| build_style(&style)) {
6135 if let Some(highlighted) = style
6136 .text
6137 .clone()
6138 .highlight(highlight_style, font_cache)
6139 .log_err()
6140 {
6141 style.text = highlighted;
6142 }
6143 }
6144
6145 style
6146}
6147
6148trait SelectionExt {
6149 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize>;
6150 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point>;
6151 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint>;
6152 fn spanned_rows(&self, include_end_if_at_line_start: bool, map: &DisplaySnapshot)
6153 -> Range<u32>;
6154}
6155
6156impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
6157 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
6158 let start = self.start.to_point(buffer);
6159 let end = self.end.to_point(buffer);
6160 if self.reversed {
6161 end..start
6162 } else {
6163 start..end
6164 }
6165 }
6166
6167 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
6168 let start = self.start.to_offset(buffer);
6169 let end = self.end.to_offset(buffer);
6170 if self.reversed {
6171 end..start
6172 } else {
6173 start..end
6174 }
6175 }
6176
6177 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
6178 let start = self
6179 .start
6180 .to_point(&map.buffer_snapshot)
6181 .to_display_point(map);
6182 let end = self
6183 .end
6184 .to_point(&map.buffer_snapshot)
6185 .to_display_point(map);
6186 if self.reversed {
6187 end..start
6188 } else {
6189 start..end
6190 }
6191 }
6192
6193 fn spanned_rows(
6194 &self,
6195 include_end_if_at_line_start: bool,
6196 map: &DisplaySnapshot,
6197 ) -> Range<u32> {
6198 let start = self.start.to_point(&map.buffer_snapshot);
6199 let mut end = self.end.to_point(&map.buffer_snapshot);
6200 if !include_end_if_at_line_start && start.row != end.row && end.column == 0 {
6201 end.row -= 1;
6202 }
6203
6204 let buffer_start = map.prev_line_boundary(start).0;
6205 let buffer_end = map.next_line_boundary(end).0;
6206 buffer_start.row..buffer_end.row + 1
6207 }
6208}
6209
6210impl<T: InvalidationRegion> InvalidationStack<T> {
6211 fn invalidate<S>(&mut self, selections: &[Selection<S>], buffer: &MultiBufferSnapshot)
6212 where
6213 S: Clone + ToOffset,
6214 {
6215 while let Some(region) = self.last() {
6216 let all_selections_inside_invalidation_ranges =
6217 if selections.len() == region.ranges().len() {
6218 selections
6219 .iter()
6220 .zip(region.ranges().iter().map(|r| r.to_offset(&buffer)))
6221 .all(|(selection, invalidation_range)| {
6222 let head = selection.head().to_offset(&buffer);
6223 invalidation_range.start <= head && invalidation_range.end >= head
6224 })
6225 } else {
6226 false
6227 };
6228
6229 if all_selections_inside_invalidation_ranges {
6230 break;
6231 } else {
6232 self.pop();
6233 }
6234 }
6235 }
6236}
6237
6238impl<T> Default for InvalidationStack<T> {
6239 fn default() -> Self {
6240 Self(Default::default())
6241 }
6242}
6243
6244impl<T> Deref for InvalidationStack<T> {
6245 type Target = Vec<T>;
6246
6247 fn deref(&self) -> &Self::Target {
6248 &self.0
6249 }
6250}
6251
6252impl<T> DerefMut for InvalidationStack<T> {
6253 fn deref_mut(&mut self) -> &mut Self::Target {
6254 &mut self.0
6255 }
6256}
6257
6258impl InvalidationRegion for BracketPairState {
6259 fn ranges(&self) -> &[Range<Anchor>] {
6260 &self.ranges
6261 }
6262}
6263
6264impl InvalidationRegion for SnippetState {
6265 fn ranges(&self) -> &[Range<Anchor>] {
6266 &self.ranges[self.active_index]
6267 }
6268}
6269
6270impl Deref for EditorStyle {
6271 type Target = theme::Editor;
6272
6273 fn deref(&self) -> &Self::Target {
6274 &self.theme
6275 }
6276}
6277
6278pub fn diagnostic_block_renderer(diagnostic: Diagnostic, is_valid: bool) -> RenderBlock {
6279 let mut highlighted_lines = Vec::new();
6280 for line in diagnostic.message.lines() {
6281 highlighted_lines.push(highlight_diagnostic_message(line));
6282 }
6283
6284 Arc::new(move |cx: &BlockContext| {
6285 let settings = cx.global::<Settings>();
6286 let theme = &settings.theme.editor;
6287 let style = diagnostic_style(diagnostic.severity, is_valid, theme);
6288 let font_size = (style.text_scale_factor * settings.buffer_font_size).round();
6289 Flex::column()
6290 .with_children(highlighted_lines.iter().map(|(line, highlights)| {
6291 Label::new(
6292 line.clone(),
6293 style.message.clone().with_font_size(font_size),
6294 )
6295 .with_highlights(highlights.clone())
6296 .contained()
6297 .with_margin_left(cx.anchor_x)
6298 .boxed()
6299 }))
6300 .aligned()
6301 .left()
6302 .boxed()
6303 })
6304}
6305
6306pub fn highlight_diagnostic_message(message: &str) -> (String, Vec<usize>) {
6307 let mut message_without_backticks = String::new();
6308 let mut prev_offset = 0;
6309 let mut inside_block = false;
6310 let mut highlights = Vec::new();
6311 for (match_ix, (offset, _)) in message
6312 .match_indices('`')
6313 .chain([(message.len(), "")])
6314 .enumerate()
6315 {
6316 message_without_backticks.push_str(&message[prev_offset..offset]);
6317 if inside_block {
6318 highlights.extend(prev_offset - match_ix..offset - match_ix);
6319 }
6320
6321 inside_block = !inside_block;
6322 prev_offset = offset + 1;
6323 }
6324
6325 (message_without_backticks, highlights)
6326}
6327
6328pub fn diagnostic_style(
6329 severity: DiagnosticSeverity,
6330 valid: bool,
6331 theme: &theme::Editor,
6332) -> DiagnosticStyle {
6333 match (severity, valid) {
6334 (DiagnosticSeverity::ERROR, true) => theme.error_diagnostic.clone(),
6335 (DiagnosticSeverity::ERROR, false) => theme.invalid_error_diagnostic.clone(),
6336 (DiagnosticSeverity::WARNING, true) => theme.warning_diagnostic.clone(),
6337 (DiagnosticSeverity::WARNING, false) => theme.invalid_warning_diagnostic.clone(),
6338 (DiagnosticSeverity::INFORMATION, true) => theme.information_diagnostic.clone(),
6339 (DiagnosticSeverity::INFORMATION, false) => theme.invalid_information_diagnostic.clone(),
6340 (DiagnosticSeverity::HINT, true) => theme.hint_diagnostic.clone(),
6341 (DiagnosticSeverity::HINT, false) => theme.invalid_hint_diagnostic.clone(),
6342 _ => theme.invalid_hint_diagnostic.clone(),
6343 }
6344}
6345
6346pub fn combine_syntax_and_fuzzy_match_highlights(
6347 text: &str,
6348 default_style: HighlightStyle,
6349 syntax_ranges: impl Iterator<Item = (Range<usize>, HighlightStyle)>,
6350 match_indices: &[usize],
6351) -> Vec<(Range<usize>, HighlightStyle)> {
6352 let mut result = Vec::new();
6353 let mut match_indices = match_indices.iter().copied().peekable();
6354
6355 for (range, mut syntax_highlight) in syntax_ranges.chain([(usize::MAX..0, Default::default())])
6356 {
6357 syntax_highlight.weight = None;
6358
6359 // Add highlights for any fuzzy match characters before the next
6360 // syntax highlight range.
6361 while let Some(&match_index) = match_indices.peek() {
6362 if match_index >= range.start {
6363 break;
6364 }
6365 match_indices.next();
6366 let end_index = char_ix_after(match_index, text);
6367 let mut match_style = default_style;
6368 match_style.weight = Some(fonts::Weight::BOLD);
6369 result.push((match_index..end_index, match_style));
6370 }
6371
6372 if range.start == usize::MAX {
6373 break;
6374 }
6375
6376 // Add highlights for any fuzzy match characters within the
6377 // syntax highlight range.
6378 let mut offset = range.start;
6379 while let Some(&match_index) = match_indices.peek() {
6380 if match_index >= range.end {
6381 break;
6382 }
6383
6384 match_indices.next();
6385 if match_index > offset {
6386 result.push((offset..match_index, syntax_highlight));
6387 }
6388
6389 let mut end_index = char_ix_after(match_index, text);
6390 while let Some(&next_match_index) = match_indices.peek() {
6391 if next_match_index == end_index && next_match_index < range.end {
6392 end_index = char_ix_after(next_match_index, text);
6393 match_indices.next();
6394 } else {
6395 break;
6396 }
6397 }
6398
6399 let mut match_style = syntax_highlight;
6400 match_style.weight = Some(fonts::Weight::BOLD);
6401 result.push((match_index..end_index, match_style));
6402 offset = end_index;
6403 }
6404
6405 if offset < range.end {
6406 result.push((offset..range.end, syntax_highlight));
6407 }
6408 }
6409
6410 fn char_ix_after(ix: usize, text: &str) -> usize {
6411 ix + text[ix..].chars().next().unwrap().len_utf8()
6412 }
6413
6414 result
6415}
6416
6417pub fn styled_runs_for_code_label<'a>(
6418 label: &'a CodeLabel,
6419 syntax_theme: &'a theme::SyntaxTheme,
6420) -> impl 'a + Iterator<Item = (Range<usize>, HighlightStyle)> {
6421 let fade_out = HighlightStyle {
6422 fade_out: Some(0.35),
6423 ..Default::default()
6424 };
6425
6426 let mut prev_end = label.filter_range.end;
6427 label
6428 .runs
6429 .iter()
6430 .enumerate()
6431 .flat_map(move |(ix, (range, highlight_id))| {
6432 let style = if let Some(style) = highlight_id.style(syntax_theme) {
6433 style
6434 } else {
6435 return Default::default();
6436 };
6437 let mut muted_style = style.clone();
6438 muted_style.highlight(fade_out);
6439
6440 let mut runs = SmallVec::<[(Range<usize>, HighlightStyle); 3]>::new();
6441 if range.start >= label.filter_range.end {
6442 if range.start > prev_end {
6443 runs.push((prev_end..range.start, fade_out));
6444 }
6445 runs.push((range.clone(), muted_style));
6446 } else if range.end <= label.filter_range.end {
6447 runs.push((range.clone(), style));
6448 } else {
6449 runs.push((range.start..label.filter_range.end, style));
6450 runs.push((label.filter_range.end..range.end, muted_style));
6451 }
6452 prev_end = cmp::max(prev_end, range.end);
6453
6454 if ix + 1 == label.runs.len() && label.text.len() > prev_end {
6455 runs.push((prev_end..label.text.len(), fade_out));
6456 }
6457
6458 runs
6459 })
6460}
6461
6462#[cfg(test)]
6463mod tests {
6464 use super::*;
6465 use gpui::{
6466 geometry::rect::RectF,
6467 platform::{WindowBounds, WindowOptions},
6468 };
6469 use language::{FakeLspAdapter, LanguageConfig};
6470 use lsp::FakeLanguageServer;
6471 use project::FakeFs;
6472 use smol::stream::StreamExt;
6473 use std::{cell::RefCell, rc::Rc, time::Instant};
6474 use text::Point;
6475 use unindent::Unindent;
6476 use util::test::{marked_text_by, marked_text_ranges, sample_text};
6477 use workspace::{FollowableItem, ItemHandle};
6478
6479 #[gpui::test]
6480 fn test_edit_events(cx: &mut MutableAppContext) {
6481 populate_settings(cx);
6482 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
6483
6484 let events = Rc::new(RefCell::new(Vec::new()));
6485 let (_, editor1) = cx.add_window(Default::default(), {
6486 let events = events.clone();
6487 |cx| {
6488 cx.subscribe(&cx.handle(), move |_, _, event, _| {
6489 if matches!(event, Event::Edited | Event::BufferEdited | Event::Dirtied) {
6490 events.borrow_mut().push(("editor1", *event));
6491 }
6492 })
6493 .detach();
6494 Editor::for_buffer(buffer.clone(), None, cx)
6495 }
6496 });
6497 let (_, editor2) = cx.add_window(Default::default(), {
6498 let events = events.clone();
6499 |cx| {
6500 cx.subscribe(&cx.handle(), move |_, _, event, _| {
6501 if matches!(event, Event::Edited | Event::BufferEdited | Event::Dirtied) {
6502 events.borrow_mut().push(("editor2", *event));
6503 }
6504 })
6505 .detach();
6506 Editor::for_buffer(buffer.clone(), None, cx)
6507 }
6508 });
6509 assert_eq!(mem::take(&mut *events.borrow_mut()), []);
6510
6511 // Mutating editor 1 will emit an `Edited` event only for that editor.
6512 editor1.update(cx, |editor, cx| editor.insert("X", cx));
6513 assert_eq!(
6514 mem::take(&mut *events.borrow_mut()),
6515 [
6516 ("editor1", Event::Edited),
6517 ("editor1", Event::BufferEdited),
6518 ("editor2", Event::BufferEdited),
6519 ("editor1", Event::Dirtied),
6520 ("editor2", Event::Dirtied)
6521 ]
6522 );
6523
6524 // Mutating editor 2 will emit an `Edited` event only for that editor.
6525 editor2.update(cx, |editor, cx| editor.delete(&Delete, cx));
6526 assert_eq!(
6527 mem::take(&mut *events.borrow_mut()),
6528 [
6529 ("editor2", Event::Edited),
6530 ("editor1", Event::BufferEdited),
6531 ("editor2", Event::BufferEdited),
6532 ]
6533 );
6534
6535 // Undoing on editor 1 will emit an `Edited` event only for that editor.
6536 editor1.update(cx, |editor, cx| editor.undo(&Undo, cx));
6537 assert_eq!(
6538 mem::take(&mut *events.borrow_mut()),
6539 [
6540 ("editor1", Event::Edited),
6541 ("editor1", Event::BufferEdited),
6542 ("editor2", Event::BufferEdited),
6543 ]
6544 );
6545
6546 // Redoing on editor 1 will emit an `Edited` event only for that editor.
6547 editor1.update(cx, |editor, cx| editor.redo(&Redo, cx));
6548 assert_eq!(
6549 mem::take(&mut *events.borrow_mut()),
6550 [
6551 ("editor1", Event::Edited),
6552 ("editor1", Event::BufferEdited),
6553 ("editor2", Event::BufferEdited),
6554 ]
6555 );
6556
6557 // Undoing on editor 2 will emit an `Edited` event only for that editor.
6558 editor2.update(cx, |editor, cx| editor.undo(&Undo, cx));
6559 assert_eq!(
6560 mem::take(&mut *events.borrow_mut()),
6561 [
6562 ("editor2", Event::Edited),
6563 ("editor1", Event::BufferEdited),
6564 ("editor2", Event::BufferEdited),
6565 ]
6566 );
6567
6568 // Redoing on editor 2 will emit an `Edited` event only for that editor.
6569 editor2.update(cx, |editor, cx| editor.redo(&Redo, cx));
6570 assert_eq!(
6571 mem::take(&mut *events.borrow_mut()),
6572 [
6573 ("editor2", Event::Edited),
6574 ("editor1", Event::BufferEdited),
6575 ("editor2", Event::BufferEdited),
6576 ]
6577 );
6578
6579 // No event is emitted when the mutation is a no-op.
6580 editor2.update(cx, |editor, cx| {
6581 editor.select_ranges([0..0], None, cx);
6582 editor.backspace(&Backspace, cx);
6583 });
6584 assert_eq!(mem::take(&mut *events.borrow_mut()), []);
6585 }
6586
6587 #[gpui::test]
6588 fn test_undo_redo_with_selection_restoration(cx: &mut MutableAppContext) {
6589 populate_settings(cx);
6590 let mut now = Instant::now();
6591 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
6592 let group_interval = buffer.read(cx).transaction_group_interval();
6593 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6594 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6595
6596 editor.update(cx, |editor, cx| {
6597 editor.start_transaction_at(now, cx);
6598 editor.select_ranges([2..4], None, cx);
6599 editor.insert("cd", cx);
6600 editor.end_transaction_at(now, cx);
6601 assert_eq!(editor.text(cx), "12cd56");
6602 assert_eq!(editor.selected_ranges(cx), vec![4..4]);
6603
6604 editor.start_transaction_at(now, cx);
6605 editor.select_ranges([4..5], None, cx);
6606 editor.insert("e", cx);
6607 editor.end_transaction_at(now, cx);
6608 assert_eq!(editor.text(cx), "12cde6");
6609 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
6610
6611 now += group_interval + Duration::from_millis(1);
6612 editor.select_ranges([2..2], None, cx);
6613
6614 // Simulate an edit in another editor
6615 buffer.update(cx, |buffer, cx| {
6616 buffer.start_transaction_at(now, cx);
6617 buffer.edit([0..1], "a", cx);
6618 buffer.edit([1..1], "b", cx);
6619 buffer.end_transaction_at(now, cx);
6620 });
6621
6622 assert_eq!(editor.text(cx), "ab2cde6");
6623 assert_eq!(editor.selected_ranges(cx), vec![3..3]);
6624
6625 // Last transaction happened past the group interval in a different editor.
6626 // Undo it individually and don't restore selections.
6627 editor.undo(&Undo, cx);
6628 assert_eq!(editor.text(cx), "12cde6");
6629 assert_eq!(editor.selected_ranges(cx), vec![2..2]);
6630
6631 // First two transactions happened within the group interval in this editor.
6632 // Undo them together and restore selections.
6633 editor.undo(&Undo, cx);
6634 editor.undo(&Undo, cx); // Undo stack is empty here, so this is a no-op.
6635 assert_eq!(editor.text(cx), "123456");
6636 assert_eq!(editor.selected_ranges(cx), vec![0..0]);
6637
6638 // Redo the first two transactions together.
6639 editor.redo(&Redo, cx);
6640 assert_eq!(editor.text(cx), "12cde6");
6641 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
6642
6643 // Redo the last transaction on its own.
6644 editor.redo(&Redo, cx);
6645 assert_eq!(editor.text(cx), "ab2cde6");
6646 assert_eq!(editor.selected_ranges(cx), vec![6..6]);
6647
6648 // Test empty transactions.
6649 editor.start_transaction_at(now, cx);
6650 editor.end_transaction_at(now, cx);
6651 editor.undo(&Undo, cx);
6652 assert_eq!(editor.text(cx), "12cde6");
6653 });
6654 }
6655
6656 #[gpui::test]
6657 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
6658 populate_settings(cx);
6659
6660 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\nddddddd\n", cx);
6661 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6662 editor.update(cx, |view, cx| {
6663 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
6664 });
6665 assert_eq!(
6666 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6667 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
6668 );
6669
6670 editor.update(cx, |view, cx| {
6671 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6672 });
6673
6674 assert_eq!(
6675 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6676 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6677 );
6678
6679 editor.update(cx, |view, cx| {
6680 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6681 });
6682
6683 assert_eq!(
6684 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6685 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
6686 );
6687
6688 editor.update(cx, |view, cx| {
6689 view.end_selection(cx);
6690 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6691 });
6692
6693 assert_eq!(
6694 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6695 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
6696 );
6697
6698 editor.update(cx, |view, cx| {
6699 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
6700 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
6701 });
6702
6703 assert_eq!(
6704 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6705 [
6706 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
6707 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
6708 ]
6709 );
6710
6711 editor.update(cx, |view, cx| {
6712 view.end_selection(cx);
6713 });
6714
6715 assert_eq!(
6716 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6717 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
6718 );
6719 }
6720
6721 #[gpui::test]
6722 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
6723 populate_settings(cx);
6724 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6725 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6726
6727 view.update(cx, |view, cx| {
6728 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
6729 assert_eq!(
6730 view.selected_display_ranges(cx),
6731 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
6732 );
6733 });
6734
6735 view.update(cx, |view, cx| {
6736 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6737 assert_eq!(
6738 view.selected_display_ranges(cx),
6739 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6740 );
6741 });
6742
6743 view.update(cx, |view, cx| {
6744 view.cancel(&Cancel, cx);
6745 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6746 assert_eq!(
6747 view.selected_display_ranges(cx),
6748 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6749 );
6750 });
6751 }
6752
6753 #[gpui::test]
6754 fn test_navigation_history(cx: &mut gpui::MutableAppContext) {
6755 populate_settings(cx);
6756 use workspace::Item;
6757 let nav_history = Rc::new(RefCell::new(workspace::NavHistory::default()));
6758 let buffer = MultiBuffer::build_simple(&sample_text(30, 5, 'a'), cx);
6759
6760 cx.add_window(Default::default(), |cx| {
6761 let mut editor = build_editor(buffer.clone(), cx);
6762 editor.nav_history = Some(ItemNavHistory::new(nav_history.clone(), &cx.handle()));
6763
6764 // Move the cursor a small distance.
6765 // Nothing is added to the navigation history.
6766 editor.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
6767 editor.select_display_ranges(&[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)], cx);
6768 assert!(nav_history.borrow_mut().pop_backward().is_none());
6769
6770 // Move the cursor a large distance.
6771 // The history can jump back to the previous position.
6772 editor.select_display_ranges(&[DisplayPoint::new(13, 0)..DisplayPoint::new(13, 3)], cx);
6773 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
6774 editor.navigate(nav_entry.data.unwrap(), cx);
6775 assert_eq!(nav_entry.item.id(), cx.view_id());
6776 assert_eq!(
6777 editor.selected_display_ranges(cx),
6778 &[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)]
6779 );
6780 assert!(nav_history.borrow_mut().pop_backward().is_none());
6781
6782 // Move the cursor a small distance via the mouse.
6783 // Nothing is added to the navigation history.
6784 editor.begin_selection(DisplayPoint::new(5, 0), false, 1, cx);
6785 editor.end_selection(cx);
6786 assert_eq!(
6787 editor.selected_display_ranges(cx),
6788 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
6789 );
6790 assert!(nav_history.borrow_mut().pop_backward().is_none());
6791
6792 // Move the cursor a large distance via the mouse.
6793 // The history can jump back to the previous position.
6794 editor.begin_selection(DisplayPoint::new(15, 0), false, 1, cx);
6795 editor.end_selection(cx);
6796 assert_eq!(
6797 editor.selected_display_ranges(cx),
6798 &[DisplayPoint::new(15, 0)..DisplayPoint::new(15, 0)]
6799 );
6800 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
6801 editor.navigate(nav_entry.data.unwrap(), cx);
6802 assert_eq!(nav_entry.item.id(), cx.view_id());
6803 assert_eq!(
6804 editor.selected_display_ranges(cx),
6805 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
6806 );
6807 assert!(nav_history.borrow_mut().pop_backward().is_none());
6808
6809 editor
6810 });
6811 }
6812
6813 #[gpui::test]
6814 fn test_cancel(cx: &mut gpui::MutableAppContext) {
6815 populate_settings(cx);
6816 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6817 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6818
6819 view.update(cx, |view, cx| {
6820 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
6821 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6822 view.end_selection(cx);
6823
6824 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
6825 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
6826 view.end_selection(cx);
6827 assert_eq!(
6828 view.selected_display_ranges(cx),
6829 [
6830 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
6831 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
6832 ]
6833 );
6834 });
6835
6836 view.update(cx, |view, cx| {
6837 view.cancel(&Cancel, cx);
6838 assert_eq!(
6839 view.selected_display_ranges(cx),
6840 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
6841 );
6842 });
6843
6844 view.update(cx, |view, cx| {
6845 view.cancel(&Cancel, cx);
6846 assert_eq!(
6847 view.selected_display_ranges(cx),
6848 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
6849 );
6850 });
6851 }
6852
6853 #[gpui::test]
6854 fn test_fold(cx: &mut gpui::MutableAppContext) {
6855 populate_settings(cx);
6856 let buffer = MultiBuffer::build_simple(
6857 &"
6858 impl Foo {
6859 // Hello!
6860
6861 fn a() {
6862 1
6863 }
6864
6865 fn b() {
6866 2
6867 }
6868
6869 fn c() {
6870 3
6871 }
6872 }
6873 "
6874 .unindent(),
6875 cx,
6876 );
6877 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6878
6879 view.update(cx, |view, cx| {
6880 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx);
6881 view.fold(&Fold, cx);
6882 assert_eq!(
6883 view.display_text(cx),
6884 "
6885 impl Foo {
6886 // Hello!
6887
6888 fn a() {
6889 1
6890 }
6891
6892 fn b() {…
6893 }
6894
6895 fn c() {…
6896 }
6897 }
6898 "
6899 .unindent(),
6900 );
6901
6902 view.fold(&Fold, cx);
6903 assert_eq!(
6904 view.display_text(cx),
6905 "
6906 impl Foo {…
6907 }
6908 "
6909 .unindent(),
6910 );
6911
6912 view.unfold_lines(&UnfoldLines, cx);
6913 assert_eq!(
6914 view.display_text(cx),
6915 "
6916 impl Foo {
6917 // Hello!
6918
6919 fn a() {
6920 1
6921 }
6922
6923 fn b() {…
6924 }
6925
6926 fn c() {…
6927 }
6928 }
6929 "
6930 .unindent(),
6931 );
6932
6933 view.unfold_lines(&UnfoldLines, cx);
6934 assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text());
6935 });
6936 }
6937
6938 #[gpui::test]
6939 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
6940 populate_settings(cx);
6941 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
6942 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6943
6944 buffer.update(cx, |buffer, cx| {
6945 buffer.edit(
6946 vec![
6947 Point::new(1, 0)..Point::new(1, 0),
6948 Point::new(1, 1)..Point::new(1, 1),
6949 ],
6950 "\t",
6951 cx,
6952 );
6953 });
6954
6955 view.update(cx, |view, cx| {
6956 assert_eq!(
6957 view.selected_display_ranges(cx),
6958 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6959 );
6960
6961 view.move_down(&MoveDown, cx);
6962 assert_eq!(
6963 view.selected_display_ranges(cx),
6964 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6965 );
6966
6967 view.move_right(&MoveRight, cx);
6968 assert_eq!(
6969 view.selected_display_ranges(cx),
6970 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
6971 );
6972
6973 view.move_left(&MoveLeft, cx);
6974 assert_eq!(
6975 view.selected_display_ranges(cx),
6976 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6977 );
6978
6979 view.move_up(&MoveUp, cx);
6980 assert_eq!(
6981 view.selected_display_ranges(cx),
6982 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6983 );
6984
6985 view.move_to_end(&MoveToEnd, cx);
6986 assert_eq!(
6987 view.selected_display_ranges(cx),
6988 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
6989 );
6990
6991 view.move_to_beginning(&MoveToBeginning, cx);
6992 assert_eq!(
6993 view.selected_display_ranges(cx),
6994 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6995 );
6996
6997 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx);
6998 view.select_to_beginning(&SelectToBeginning, cx);
6999 assert_eq!(
7000 view.selected_display_ranges(cx),
7001 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
7002 );
7003
7004 view.select_to_end(&SelectToEnd, cx);
7005 assert_eq!(
7006 view.selected_display_ranges(cx),
7007 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
7008 );
7009 });
7010 }
7011
7012 #[gpui::test]
7013 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
7014 populate_settings(cx);
7015 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
7016 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7017
7018 assert_eq!('ⓐ'.len_utf8(), 3);
7019 assert_eq!('α'.len_utf8(), 2);
7020
7021 view.update(cx, |view, cx| {
7022 view.fold_ranges(
7023 vec![
7024 Point::new(0, 6)..Point::new(0, 12),
7025 Point::new(1, 2)..Point::new(1, 4),
7026 Point::new(2, 4)..Point::new(2, 8),
7027 ],
7028 cx,
7029 );
7030 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
7031
7032 view.move_right(&MoveRight, cx);
7033 assert_eq!(
7034 view.selected_display_ranges(cx),
7035 &[empty_range(0, "ⓐ".len())]
7036 );
7037 view.move_right(&MoveRight, cx);
7038 assert_eq!(
7039 view.selected_display_ranges(cx),
7040 &[empty_range(0, "ⓐⓑ".len())]
7041 );
7042 view.move_right(&MoveRight, cx);
7043 assert_eq!(
7044 view.selected_display_ranges(cx),
7045 &[empty_range(0, "ⓐⓑ…".len())]
7046 );
7047
7048 view.move_down(&MoveDown, cx);
7049 assert_eq!(
7050 view.selected_display_ranges(cx),
7051 &[empty_range(1, "ab…".len())]
7052 );
7053 view.move_left(&MoveLeft, cx);
7054 assert_eq!(
7055 view.selected_display_ranges(cx),
7056 &[empty_range(1, "ab".len())]
7057 );
7058 view.move_left(&MoveLeft, cx);
7059 assert_eq!(
7060 view.selected_display_ranges(cx),
7061 &[empty_range(1, "a".len())]
7062 );
7063
7064 view.move_down(&MoveDown, cx);
7065 assert_eq!(
7066 view.selected_display_ranges(cx),
7067 &[empty_range(2, "α".len())]
7068 );
7069 view.move_right(&MoveRight, cx);
7070 assert_eq!(
7071 view.selected_display_ranges(cx),
7072 &[empty_range(2, "αβ".len())]
7073 );
7074 view.move_right(&MoveRight, cx);
7075 assert_eq!(
7076 view.selected_display_ranges(cx),
7077 &[empty_range(2, "αβ…".len())]
7078 );
7079 view.move_right(&MoveRight, cx);
7080 assert_eq!(
7081 view.selected_display_ranges(cx),
7082 &[empty_range(2, "αβ…ε".len())]
7083 );
7084
7085 view.move_up(&MoveUp, cx);
7086 assert_eq!(
7087 view.selected_display_ranges(cx),
7088 &[empty_range(1, "ab…e".len())]
7089 );
7090 view.move_up(&MoveUp, cx);
7091 assert_eq!(
7092 view.selected_display_ranges(cx),
7093 &[empty_range(0, "ⓐⓑ…ⓔ".len())]
7094 );
7095 view.move_left(&MoveLeft, cx);
7096 assert_eq!(
7097 view.selected_display_ranges(cx),
7098 &[empty_range(0, "ⓐⓑ…".len())]
7099 );
7100 view.move_left(&MoveLeft, cx);
7101 assert_eq!(
7102 view.selected_display_ranges(cx),
7103 &[empty_range(0, "ⓐⓑ".len())]
7104 );
7105 view.move_left(&MoveLeft, cx);
7106 assert_eq!(
7107 view.selected_display_ranges(cx),
7108 &[empty_range(0, "ⓐ".len())]
7109 );
7110 });
7111 }
7112
7113 #[gpui::test]
7114 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
7115 populate_settings(cx);
7116 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
7117 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7118 view.update(cx, |view, cx| {
7119 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx);
7120 view.move_down(&MoveDown, cx);
7121 assert_eq!(
7122 view.selected_display_ranges(cx),
7123 &[empty_range(1, "abcd".len())]
7124 );
7125
7126 view.move_down(&MoveDown, cx);
7127 assert_eq!(
7128 view.selected_display_ranges(cx),
7129 &[empty_range(2, "αβγ".len())]
7130 );
7131
7132 view.move_down(&MoveDown, cx);
7133 assert_eq!(
7134 view.selected_display_ranges(cx),
7135 &[empty_range(3, "abcd".len())]
7136 );
7137
7138 view.move_down(&MoveDown, cx);
7139 assert_eq!(
7140 view.selected_display_ranges(cx),
7141 &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
7142 );
7143
7144 view.move_up(&MoveUp, cx);
7145 assert_eq!(
7146 view.selected_display_ranges(cx),
7147 &[empty_range(3, "abcd".len())]
7148 );
7149
7150 view.move_up(&MoveUp, cx);
7151 assert_eq!(
7152 view.selected_display_ranges(cx),
7153 &[empty_range(2, "αβγ".len())]
7154 );
7155 });
7156 }
7157
7158 #[gpui::test]
7159 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
7160 populate_settings(cx);
7161 let buffer = MultiBuffer::build_simple("abc\n def", cx);
7162 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7163 view.update(cx, |view, cx| {
7164 view.select_display_ranges(
7165 &[
7166 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7167 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
7168 ],
7169 cx,
7170 );
7171 });
7172
7173 view.update(cx, |view, cx| {
7174 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
7175 assert_eq!(
7176 view.selected_display_ranges(cx),
7177 &[
7178 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7179 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7180 ]
7181 );
7182 });
7183
7184 view.update(cx, |view, cx| {
7185 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
7186 assert_eq!(
7187 view.selected_display_ranges(cx),
7188 &[
7189 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7190 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7191 ]
7192 );
7193 });
7194
7195 view.update(cx, |view, cx| {
7196 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
7197 assert_eq!(
7198 view.selected_display_ranges(cx),
7199 &[
7200 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7201 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7202 ]
7203 );
7204 });
7205
7206 view.update(cx, |view, cx| {
7207 view.move_to_end_of_line(&MoveToEndOfLine, cx);
7208 assert_eq!(
7209 view.selected_display_ranges(cx),
7210 &[
7211 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7212 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
7213 ]
7214 );
7215 });
7216
7217 // Moving to the end of line again is a no-op.
7218 view.update(cx, |view, cx| {
7219 view.move_to_end_of_line(&MoveToEndOfLine, cx);
7220 assert_eq!(
7221 view.selected_display_ranges(cx),
7222 &[
7223 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7224 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
7225 ]
7226 );
7227 });
7228
7229 view.update(cx, |view, cx| {
7230 view.move_left(&MoveLeft, cx);
7231 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
7232 assert_eq!(
7233 view.selected_display_ranges(cx),
7234 &[
7235 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
7236 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
7237 ]
7238 );
7239 });
7240
7241 view.update(cx, |view, cx| {
7242 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
7243 assert_eq!(
7244 view.selected_display_ranges(cx),
7245 &[
7246 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
7247 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
7248 ]
7249 );
7250 });
7251
7252 view.update(cx, |view, cx| {
7253 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
7254 assert_eq!(
7255 view.selected_display_ranges(cx),
7256 &[
7257 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
7258 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
7259 ]
7260 );
7261 });
7262
7263 view.update(cx, |view, cx| {
7264 view.select_to_end_of_line(&SelectToEndOfLine(true), cx);
7265 assert_eq!(
7266 view.selected_display_ranges(cx),
7267 &[
7268 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
7269 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
7270 ]
7271 );
7272 });
7273
7274 view.update(cx, |view, cx| {
7275 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
7276 assert_eq!(view.display_text(cx), "ab\n de");
7277 assert_eq!(
7278 view.selected_display_ranges(cx),
7279 &[
7280 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7281 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
7282 ]
7283 );
7284 });
7285
7286 view.update(cx, |view, cx| {
7287 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
7288 assert_eq!(view.display_text(cx), "\n");
7289 assert_eq!(
7290 view.selected_display_ranges(cx),
7291 &[
7292 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7293 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7294 ]
7295 );
7296 });
7297 }
7298
7299 #[gpui::test]
7300 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
7301 populate_settings(cx);
7302 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
7303 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7304 view.update(cx, |view, cx| {
7305 view.select_display_ranges(
7306 &[
7307 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
7308 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
7309 ],
7310 cx,
7311 );
7312
7313 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
7314 assert_selection_ranges(
7315 "use std::<>str::{foo, bar}\n\n {[]baz.qux()}",
7316 vec![('<', '>'), ('[', ']')],
7317 view,
7318 cx,
7319 );
7320
7321 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
7322 assert_selection_ranges(
7323 "use std<>::str::{foo, bar}\n\n []{baz.qux()}",
7324 vec![('<', '>'), ('[', ']')],
7325 view,
7326 cx,
7327 );
7328
7329 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
7330 assert_selection_ranges(
7331 "use <>std::str::{foo, bar}\n\n[] {baz.qux()}",
7332 vec![('<', '>'), ('[', ']')],
7333 view,
7334 cx,
7335 );
7336
7337 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
7338 assert_selection_ranges(
7339 "<>use std::str::{foo, bar}\n[]\n {baz.qux()}",
7340 vec![('<', '>'), ('[', ']')],
7341 view,
7342 cx,
7343 );
7344
7345 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
7346 assert_selection_ranges(
7347 "<>use std::str::{foo, bar[]}\n\n {baz.qux()}",
7348 vec![('<', '>'), ('[', ']')],
7349 view,
7350 cx,
7351 );
7352
7353 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
7354 assert_selection_ranges(
7355 "use<> std::str::{foo, bar}[]\n\n {baz.qux()}",
7356 vec![('<', '>'), ('[', ']')],
7357 view,
7358 cx,
7359 );
7360
7361 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
7362 assert_selection_ranges(
7363 "use std<>::str::{foo, bar}\n[]\n {baz.qux()}",
7364 vec![('<', '>'), ('[', ']')],
7365 view,
7366 cx,
7367 );
7368
7369 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
7370 assert_selection_ranges(
7371 "use std::<>str::{foo, bar}\n\n {[]baz.qux()}",
7372 vec![('<', '>'), ('[', ']')],
7373 view,
7374 cx,
7375 );
7376
7377 view.move_right(&MoveRight, cx);
7378 view.select_to_previous_word_start(&SelectToPreviousWordStart, cx);
7379 assert_selection_ranges(
7380 "use std::>s<tr::{foo, bar}\n\n {]b[az.qux()}",
7381 vec![('<', '>'), ('[', ']')],
7382 view,
7383 cx,
7384 );
7385
7386 view.select_to_previous_word_start(&SelectToPreviousWordStart, cx);
7387 assert_selection_ranges(
7388 "use std>::s<tr::{foo, bar}\n\n ]{b[az.qux()}",
7389 vec![('<', '>'), ('[', ']')],
7390 view,
7391 cx,
7392 );
7393
7394 view.select_to_next_word_end(&SelectToNextWordEnd, cx);
7395 assert_selection_ranges(
7396 "use std::>s<tr::{foo, bar}\n\n {]b[az.qux()}",
7397 vec![('<', '>'), ('[', ']')],
7398 view,
7399 cx,
7400 );
7401 });
7402 }
7403
7404 #[gpui::test]
7405 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
7406 populate_settings(cx);
7407 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
7408 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7409
7410 view.update(cx, |view, cx| {
7411 view.set_wrap_width(Some(140.), cx);
7412 assert_eq!(
7413 view.display_text(cx),
7414 "use one::{\n two::three::\n four::five\n};"
7415 );
7416
7417 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx);
7418
7419 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
7420 assert_eq!(
7421 view.selected_display_ranges(cx),
7422 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
7423 );
7424
7425 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
7426 assert_eq!(
7427 view.selected_display_ranges(cx),
7428 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
7429 );
7430
7431 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
7432 assert_eq!(
7433 view.selected_display_ranges(cx),
7434 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
7435 );
7436
7437 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
7438 assert_eq!(
7439 view.selected_display_ranges(cx),
7440 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
7441 );
7442
7443 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
7444 assert_eq!(
7445 view.selected_display_ranges(cx),
7446 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
7447 );
7448
7449 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
7450 assert_eq!(
7451 view.selected_display_ranges(cx),
7452 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
7453 );
7454 });
7455 }
7456
7457 #[gpui::test]
7458 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
7459 populate_settings(cx);
7460 let buffer = MultiBuffer::build_simple("one two three four", cx);
7461 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7462
7463 view.update(cx, |view, cx| {
7464 view.select_display_ranges(
7465 &[
7466 // an empty selection - the preceding word fragment is deleted
7467 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7468 // characters selected - they are deleted
7469 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
7470 ],
7471 cx,
7472 );
7473 view.delete_to_previous_word_start(&DeleteToPreviousWordStart, cx);
7474 });
7475
7476 assert_eq!(buffer.read(cx).read(cx).text(), "e two te four");
7477
7478 view.update(cx, |view, cx| {
7479 view.select_display_ranges(
7480 &[
7481 // an empty selection - the following word fragment is deleted
7482 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7483 // characters selected - they are deleted
7484 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
7485 ],
7486 cx,
7487 );
7488 view.delete_to_next_word_end(&DeleteToNextWordEnd, cx);
7489 });
7490
7491 assert_eq!(buffer.read(cx).read(cx).text(), "e t te our");
7492 }
7493
7494 #[gpui::test]
7495 fn test_newline(cx: &mut gpui::MutableAppContext) {
7496 populate_settings(cx);
7497 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
7498 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7499
7500 view.update(cx, |view, cx| {
7501 view.select_display_ranges(
7502 &[
7503 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7504 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7505 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
7506 ],
7507 cx,
7508 );
7509
7510 view.newline(&Newline, cx);
7511 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
7512 });
7513 }
7514
7515 #[gpui::test]
7516 fn test_newline_with_old_selections(cx: &mut gpui::MutableAppContext) {
7517 populate_settings(cx);
7518 let buffer = MultiBuffer::build_simple(
7519 "
7520 a
7521 b(
7522 X
7523 )
7524 c(
7525 X
7526 )
7527 "
7528 .unindent()
7529 .as_str(),
7530 cx,
7531 );
7532
7533 let (_, editor) = cx.add_window(Default::default(), |cx| {
7534 let mut editor = build_editor(buffer.clone(), cx);
7535 editor.select_ranges(
7536 [
7537 Point::new(2, 4)..Point::new(2, 5),
7538 Point::new(5, 4)..Point::new(5, 5),
7539 ],
7540 None,
7541 cx,
7542 );
7543 editor
7544 });
7545
7546 // Edit the buffer directly, deleting ranges surrounding the editor's selections
7547 buffer.update(cx, |buffer, cx| {
7548 buffer.edit(
7549 [
7550 Point::new(1, 2)..Point::new(3, 0),
7551 Point::new(4, 2)..Point::new(6, 0),
7552 ],
7553 "",
7554 cx,
7555 );
7556 assert_eq!(
7557 buffer.read(cx).text(),
7558 "
7559 a
7560 b()
7561 c()
7562 "
7563 .unindent()
7564 );
7565 });
7566
7567 editor.update(cx, |editor, cx| {
7568 assert_eq!(
7569 editor.selected_ranges(cx),
7570 &[
7571 Point::new(1, 2)..Point::new(1, 2),
7572 Point::new(2, 2)..Point::new(2, 2),
7573 ],
7574 );
7575
7576 editor.newline(&Newline, cx);
7577 assert_eq!(
7578 editor.text(cx),
7579 "
7580 a
7581 b(
7582 )
7583 c(
7584 )
7585 "
7586 .unindent()
7587 );
7588
7589 // The selections are moved after the inserted newlines
7590 assert_eq!(
7591 editor.selected_ranges(cx),
7592 &[
7593 Point::new(2, 0)..Point::new(2, 0),
7594 Point::new(4, 0)..Point::new(4, 0),
7595 ],
7596 );
7597 });
7598 }
7599
7600 #[gpui::test]
7601 fn test_insert_with_old_selections(cx: &mut gpui::MutableAppContext) {
7602 populate_settings(cx);
7603 let buffer = MultiBuffer::build_simple("a( X ), b( Y ), c( Z )", cx);
7604 let (_, editor) = cx.add_window(Default::default(), |cx| {
7605 let mut editor = build_editor(buffer.clone(), cx);
7606 editor.select_ranges([3..4, 11..12, 19..20], None, cx);
7607 editor
7608 });
7609
7610 // Edit the buffer directly, deleting ranges surrounding the editor's selections
7611 buffer.update(cx, |buffer, cx| {
7612 buffer.edit([2..5, 10..13, 18..21], "", cx);
7613 assert_eq!(buffer.read(cx).text(), "a(), b(), c()".unindent());
7614 });
7615
7616 editor.update(cx, |editor, cx| {
7617 assert_eq!(editor.selected_ranges(cx), &[2..2, 7..7, 12..12],);
7618
7619 editor.insert("Z", cx);
7620 assert_eq!(editor.text(cx), "a(Z), b(Z), c(Z)");
7621
7622 // The selections are moved after the inserted characters
7623 assert_eq!(editor.selected_ranges(cx), &[3..3, 9..9, 15..15],);
7624 });
7625 }
7626
7627 #[gpui::test]
7628 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
7629 populate_settings(cx);
7630 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
7631 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7632
7633 view.update(cx, |view, cx| {
7634 // two selections on the same line
7635 view.select_display_ranges(
7636 &[
7637 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
7638 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
7639 ],
7640 cx,
7641 );
7642
7643 // indent from mid-tabstop to full tabstop
7644 view.tab(&Tab(Direction::Next), cx);
7645 assert_eq!(view.text(cx), " one two\nthree\n four");
7646 assert_eq!(
7647 view.selected_display_ranges(cx),
7648 &[
7649 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
7650 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
7651 ]
7652 );
7653
7654 // outdent from 1 tabstop to 0 tabstops
7655 view.tab(&Tab(Direction::Prev), cx);
7656 assert_eq!(view.text(cx), "one two\nthree\n four");
7657 assert_eq!(
7658 view.selected_display_ranges(cx),
7659 &[
7660 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
7661 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
7662 ]
7663 );
7664
7665 // select across line ending
7666 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx);
7667
7668 // indent and outdent affect only the preceding line
7669 view.tab(&Tab(Direction::Next), cx);
7670 assert_eq!(view.text(cx), "one two\n three\n four");
7671 assert_eq!(
7672 view.selected_display_ranges(cx),
7673 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
7674 );
7675 view.tab(&Tab(Direction::Prev), cx);
7676 assert_eq!(view.text(cx), "one two\nthree\n four");
7677 assert_eq!(
7678 view.selected_display_ranges(cx),
7679 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
7680 );
7681
7682 // Ensure that indenting/outdenting works when the cursor is at column 0.
7683 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
7684 view.tab(&Tab(Direction::Next), cx);
7685 assert_eq!(view.text(cx), "one two\n three\n four");
7686 assert_eq!(
7687 view.selected_display_ranges(cx),
7688 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
7689 );
7690
7691 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
7692 view.tab(&Tab(Direction::Prev), cx);
7693 assert_eq!(view.text(cx), "one two\nthree\n four");
7694 assert_eq!(
7695 view.selected_display_ranges(cx),
7696 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
7697 );
7698 });
7699 }
7700
7701 #[gpui::test]
7702 fn test_backspace(cx: &mut gpui::MutableAppContext) {
7703 populate_settings(cx);
7704 let (_, view) = cx.add_window(Default::default(), |cx| {
7705 build_editor(MultiBuffer::build_simple("", cx), cx)
7706 });
7707
7708 view.update(cx, |view, cx| {
7709 view.set_text("one two three\nfour five six\nseven eight nine\nten\n", cx);
7710 view.select_display_ranges(
7711 &[
7712 // an empty selection - the preceding character is deleted
7713 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7714 // one character selected - it is deleted
7715 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7716 // a line suffix selected - it is deleted
7717 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
7718 ],
7719 cx,
7720 );
7721 view.backspace(&Backspace, cx);
7722 assert_eq!(view.text(cx), "oe two three\nfou five six\nseven ten\n");
7723
7724 view.set_text(" one\n two\n three\n four", cx);
7725 view.select_display_ranges(
7726 &[
7727 // cursors at the the end of leading indent - last indent is deleted
7728 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
7729 DisplayPoint::new(1, 8)..DisplayPoint::new(1, 8),
7730 // cursors inside leading indent - overlapping indent deletions are coalesced
7731 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
7732 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7733 DisplayPoint::new(2, 6)..DisplayPoint::new(2, 6),
7734 // cursor at the beginning of a line - preceding newline is deleted
7735 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7736 // selection inside leading indent - only the selected character is deleted
7737 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 3),
7738 ],
7739 cx,
7740 );
7741 view.backspace(&Backspace, cx);
7742 assert_eq!(view.text(cx), "one\n two\n three four");
7743 });
7744 }
7745
7746 #[gpui::test]
7747 fn test_delete(cx: &mut gpui::MutableAppContext) {
7748 populate_settings(cx);
7749 let buffer =
7750 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
7751 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7752
7753 view.update(cx, |view, cx| {
7754 view.select_display_ranges(
7755 &[
7756 // an empty selection - the following character is deleted
7757 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7758 // one character selected - it is deleted
7759 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7760 // a line suffix selected - it is deleted
7761 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
7762 ],
7763 cx,
7764 );
7765 view.delete(&Delete, cx);
7766 });
7767
7768 assert_eq!(
7769 buffer.read(cx).read(cx).text(),
7770 "on two three\nfou five six\nseven ten\n"
7771 );
7772 }
7773
7774 #[gpui::test]
7775 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
7776 populate_settings(cx);
7777 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7778 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7779 view.update(cx, |view, cx| {
7780 view.select_display_ranges(
7781 &[
7782 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7783 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
7784 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7785 ],
7786 cx,
7787 );
7788 view.delete_line(&DeleteLine, cx);
7789 assert_eq!(view.display_text(cx), "ghi");
7790 assert_eq!(
7791 view.selected_display_ranges(cx),
7792 vec![
7793 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7794 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
7795 ]
7796 );
7797 });
7798
7799 populate_settings(cx);
7800 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7801 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7802 view.update(cx, |view, cx| {
7803 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx);
7804 view.delete_line(&DeleteLine, cx);
7805 assert_eq!(view.display_text(cx), "ghi\n");
7806 assert_eq!(
7807 view.selected_display_ranges(cx),
7808 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
7809 );
7810 });
7811 }
7812
7813 #[gpui::test]
7814 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
7815 populate_settings(cx);
7816 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7817 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7818 view.update(cx, |view, cx| {
7819 view.select_display_ranges(
7820 &[
7821 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7822 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7823 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7824 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7825 ],
7826 cx,
7827 );
7828 view.duplicate_line(&DuplicateLine, cx);
7829 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
7830 assert_eq!(
7831 view.selected_display_ranges(cx),
7832 vec![
7833 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
7834 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7835 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7836 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
7837 ]
7838 );
7839 });
7840
7841 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7842 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7843 view.update(cx, |view, cx| {
7844 view.select_display_ranges(
7845 &[
7846 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
7847 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
7848 ],
7849 cx,
7850 );
7851 view.duplicate_line(&DuplicateLine, cx);
7852 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
7853 assert_eq!(
7854 view.selected_display_ranges(cx),
7855 vec![
7856 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
7857 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
7858 ]
7859 );
7860 });
7861 }
7862
7863 #[gpui::test]
7864 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
7865 populate_settings(cx);
7866 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
7867 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7868 view.update(cx, |view, cx| {
7869 view.fold_ranges(
7870 vec![
7871 Point::new(0, 2)..Point::new(1, 2),
7872 Point::new(2, 3)..Point::new(4, 1),
7873 Point::new(7, 0)..Point::new(8, 4),
7874 ],
7875 cx,
7876 );
7877 view.select_display_ranges(
7878 &[
7879 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7880 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7881 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7882 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
7883 ],
7884 cx,
7885 );
7886 assert_eq!(
7887 view.display_text(cx),
7888 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
7889 );
7890
7891 view.move_line_up(&MoveLineUp, cx);
7892 assert_eq!(
7893 view.display_text(cx),
7894 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
7895 );
7896 assert_eq!(
7897 view.selected_display_ranges(cx),
7898 vec![
7899 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7900 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7901 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
7902 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
7903 ]
7904 );
7905 });
7906
7907 view.update(cx, |view, cx| {
7908 view.move_line_down(&MoveLineDown, cx);
7909 assert_eq!(
7910 view.display_text(cx),
7911 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
7912 );
7913 assert_eq!(
7914 view.selected_display_ranges(cx),
7915 vec![
7916 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7917 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7918 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7919 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
7920 ]
7921 );
7922 });
7923
7924 view.update(cx, |view, cx| {
7925 view.move_line_down(&MoveLineDown, cx);
7926 assert_eq!(
7927 view.display_text(cx),
7928 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
7929 );
7930 assert_eq!(
7931 view.selected_display_ranges(cx),
7932 vec![
7933 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7934 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7935 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7936 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
7937 ]
7938 );
7939 });
7940
7941 view.update(cx, |view, cx| {
7942 view.move_line_up(&MoveLineUp, cx);
7943 assert_eq!(
7944 view.display_text(cx),
7945 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
7946 );
7947 assert_eq!(
7948 view.selected_display_ranges(cx),
7949 vec![
7950 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7951 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7952 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
7953 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
7954 ]
7955 );
7956 });
7957 }
7958
7959 #[gpui::test]
7960 fn test_move_line_up_down_with_blocks(cx: &mut gpui::MutableAppContext) {
7961 populate_settings(cx);
7962 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
7963 let snapshot = buffer.read(cx).snapshot(cx);
7964 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7965 editor.update(cx, |editor, cx| {
7966 editor.insert_blocks(
7967 [BlockProperties {
7968 position: snapshot.anchor_after(Point::new(2, 0)),
7969 disposition: BlockDisposition::Below,
7970 height: 1,
7971 render: Arc::new(|_| Empty::new().boxed()),
7972 }],
7973 cx,
7974 );
7975 editor.select_ranges([Point::new(2, 0)..Point::new(2, 0)], None, cx);
7976 editor.move_line_down(&MoveLineDown, cx);
7977 });
7978 }
7979
7980 #[gpui::test]
7981 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
7982 populate_settings(cx);
7983 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
7984 let view = cx
7985 .add_window(Default::default(), |cx| build_editor(buffer.clone(), cx))
7986 .1;
7987
7988 // Cut with three selections. Clipboard text is divided into three slices.
7989 view.update(cx, |view, cx| {
7990 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
7991 view.cut(&Cut, cx);
7992 assert_eq!(view.display_text(cx), "two four six ");
7993 });
7994
7995 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
7996 view.update(cx, |view, cx| {
7997 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
7998 view.paste(&Paste, cx);
7999 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
8000 assert_eq!(
8001 view.selected_display_ranges(cx),
8002 &[
8003 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
8004 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
8005 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
8006 ]
8007 );
8008 });
8009
8010 // Paste again but with only two cursors. Since the number of cursors doesn't
8011 // match the number of slices in the clipboard, the entire clipboard text
8012 // is pasted at each cursor.
8013 view.update(cx, |view, cx| {
8014 view.select_ranges(vec![0..0, 31..31], None, cx);
8015 view.handle_input(&Input("( ".into()), cx);
8016 view.paste(&Paste, cx);
8017 view.handle_input(&Input(") ".into()), cx);
8018 assert_eq!(
8019 view.display_text(cx),
8020 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
8021 );
8022 });
8023
8024 view.update(cx, |view, cx| {
8025 view.select_ranges(vec![0..0], None, cx);
8026 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
8027 assert_eq!(
8028 view.display_text(cx),
8029 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
8030 );
8031 });
8032
8033 // Cut with three selections, one of which is full-line.
8034 view.update(cx, |view, cx| {
8035 view.select_display_ranges(
8036 &[
8037 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
8038 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
8039 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
8040 ],
8041 cx,
8042 );
8043 view.cut(&Cut, cx);
8044 assert_eq!(
8045 view.display_text(cx),
8046 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
8047 );
8048 });
8049
8050 // Paste with three selections, noticing how the copied selection that was full-line
8051 // gets inserted before the second cursor.
8052 view.update(cx, |view, cx| {
8053 view.select_display_ranges(
8054 &[
8055 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
8056 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
8057 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
8058 ],
8059 cx,
8060 );
8061 view.paste(&Paste, cx);
8062 assert_eq!(
8063 view.display_text(cx),
8064 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
8065 );
8066 assert_eq!(
8067 view.selected_display_ranges(cx),
8068 &[
8069 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
8070 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
8071 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
8072 ]
8073 );
8074 });
8075
8076 // Copy with a single cursor only, which writes the whole line into the clipboard.
8077 view.update(cx, |view, cx| {
8078 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx);
8079 view.copy(&Copy, cx);
8080 });
8081
8082 // Paste with three selections, noticing how the copied full-line selection is inserted
8083 // before the empty selections but replaces the selection that is non-empty.
8084 view.update(cx, |view, cx| {
8085 view.select_display_ranges(
8086 &[
8087 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
8088 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
8089 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
8090 ],
8091 cx,
8092 );
8093 view.paste(&Paste, cx);
8094 assert_eq!(
8095 view.display_text(cx),
8096 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
8097 );
8098 assert_eq!(
8099 view.selected_display_ranges(cx),
8100 &[
8101 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
8102 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
8103 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
8104 ]
8105 );
8106 });
8107 }
8108
8109 #[gpui::test]
8110 fn test_select_all(cx: &mut gpui::MutableAppContext) {
8111 populate_settings(cx);
8112 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
8113 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
8114 view.update(cx, |view, cx| {
8115 view.select_all(&SelectAll, cx);
8116 assert_eq!(
8117 view.selected_display_ranges(cx),
8118 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
8119 );
8120 });
8121 }
8122
8123 #[gpui::test]
8124 fn test_select_line(cx: &mut gpui::MutableAppContext) {
8125 populate_settings(cx);
8126 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
8127 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
8128 view.update(cx, |view, cx| {
8129 view.select_display_ranges(
8130 &[
8131 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
8132 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
8133 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
8134 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
8135 ],
8136 cx,
8137 );
8138 view.select_line(&SelectLine, cx);
8139 assert_eq!(
8140 view.selected_display_ranges(cx),
8141 vec![
8142 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
8143 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
8144 ]
8145 );
8146 });
8147
8148 view.update(cx, |view, cx| {
8149 view.select_line(&SelectLine, cx);
8150 assert_eq!(
8151 view.selected_display_ranges(cx),
8152 vec![
8153 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
8154 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
8155 ]
8156 );
8157 });
8158
8159 view.update(cx, |view, cx| {
8160 view.select_line(&SelectLine, cx);
8161 assert_eq!(
8162 view.selected_display_ranges(cx),
8163 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
8164 );
8165 });
8166 }
8167
8168 #[gpui::test]
8169 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
8170 populate_settings(cx);
8171 let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
8172 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
8173 view.update(cx, |view, cx| {
8174 view.fold_ranges(
8175 vec![
8176 Point::new(0, 2)..Point::new(1, 2),
8177 Point::new(2, 3)..Point::new(4, 1),
8178 Point::new(7, 0)..Point::new(8, 4),
8179 ],
8180 cx,
8181 );
8182 view.select_display_ranges(
8183 &[
8184 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
8185 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
8186 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
8187 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
8188 ],
8189 cx,
8190 );
8191 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
8192 });
8193
8194 view.update(cx, |view, cx| {
8195 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
8196 assert_eq!(
8197 view.display_text(cx),
8198 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
8199 );
8200 assert_eq!(
8201 view.selected_display_ranges(cx),
8202 [
8203 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
8204 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
8205 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
8206 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
8207 ]
8208 );
8209 });
8210
8211 view.update(cx, |view, cx| {
8212 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx);
8213 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
8214 assert_eq!(
8215 view.display_text(cx),
8216 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
8217 );
8218 assert_eq!(
8219 view.selected_display_ranges(cx),
8220 [
8221 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
8222 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
8223 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
8224 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
8225 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
8226 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
8227 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
8228 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
8229 ]
8230 );
8231 });
8232 }
8233
8234 #[gpui::test]
8235 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
8236 populate_settings(cx);
8237 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
8238 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
8239
8240 view.update(cx, |view, cx| {
8241 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx);
8242 });
8243 view.update(cx, |view, cx| {
8244 view.add_selection_above(&AddSelectionAbove, cx);
8245 assert_eq!(
8246 view.selected_display_ranges(cx),
8247 vec![
8248 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
8249 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
8250 ]
8251 );
8252 });
8253
8254 view.update(cx, |view, cx| {
8255 view.add_selection_above(&AddSelectionAbove, cx);
8256 assert_eq!(
8257 view.selected_display_ranges(cx),
8258 vec![
8259 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
8260 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
8261 ]
8262 );
8263 });
8264
8265 view.update(cx, |view, cx| {
8266 view.add_selection_below(&AddSelectionBelow, cx);
8267 assert_eq!(
8268 view.selected_display_ranges(cx),
8269 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
8270 );
8271
8272 view.undo_selection(&UndoSelection, cx);
8273 assert_eq!(
8274 view.selected_display_ranges(cx),
8275 vec![
8276 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
8277 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
8278 ]
8279 );
8280
8281 view.redo_selection(&RedoSelection, cx);
8282 assert_eq!(
8283 view.selected_display_ranges(cx),
8284 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
8285 );
8286 });
8287
8288 view.update(cx, |view, cx| {
8289 view.add_selection_below(&AddSelectionBelow, cx);
8290 assert_eq!(
8291 view.selected_display_ranges(cx),
8292 vec![
8293 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
8294 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
8295 ]
8296 );
8297 });
8298
8299 view.update(cx, |view, cx| {
8300 view.add_selection_below(&AddSelectionBelow, cx);
8301 assert_eq!(
8302 view.selected_display_ranges(cx),
8303 vec![
8304 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
8305 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
8306 ]
8307 );
8308 });
8309
8310 view.update(cx, |view, cx| {
8311 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx);
8312 });
8313 view.update(cx, |view, cx| {
8314 view.add_selection_below(&AddSelectionBelow, cx);
8315 assert_eq!(
8316 view.selected_display_ranges(cx),
8317 vec![
8318 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
8319 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
8320 ]
8321 );
8322 });
8323
8324 view.update(cx, |view, cx| {
8325 view.add_selection_below(&AddSelectionBelow, cx);
8326 assert_eq!(
8327 view.selected_display_ranges(cx),
8328 vec![
8329 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
8330 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
8331 ]
8332 );
8333 });
8334
8335 view.update(cx, |view, cx| {
8336 view.add_selection_above(&AddSelectionAbove, cx);
8337 assert_eq!(
8338 view.selected_display_ranges(cx),
8339 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
8340 );
8341 });
8342
8343 view.update(cx, |view, cx| {
8344 view.add_selection_above(&AddSelectionAbove, cx);
8345 assert_eq!(
8346 view.selected_display_ranges(cx),
8347 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
8348 );
8349 });
8350
8351 view.update(cx, |view, cx| {
8352 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx);
8353 view.add_selection_below(&AddSelectionBelow, cx);
8354 assert_eq!(
8355 view.selected_display_ranges(cx),
8356 vec![
8357 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
8358 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
8359 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
8360 ]
8361 );
8362 });
8363
8364 view.update(cx, |view, cx| {
8365 view.add_selection_below(&AddSelectionBelow, cx);
8366 assert_eq!(
8367 view.selected_display_ranges(cx),
8368 vec![
8369 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
8370 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
8371 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
8372 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
8373 ]
8374 );
8375 });
8376
8377 view.update(cx, |view, cx| {
8378 view.add_selection_above(&AddSelectionAbove, cx);
8379 assert_eq!(
8380 view.selected_display_ranges(cx),
8381 vec![
8382 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
8383 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
8384 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
8385 ]
8386 );
8387 });
8388
8389 view.update(cx, |view, cx| {
8390 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx);
8391 });
8392 view.update(cx, |view, cx| {
8393 view.add_selection_above(&AddSelectionAbove, cx);
8394 assert_eq!(
8395 view.selected_display_ranges(cx),
8396 vec![
8397 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
8398 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
8399 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
8400 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
8401 ]
8402 );
8403 });
8404
8405 view.update(cx, |view, cx| {
8406 view.add_selection_below(&AddSelectionBelow, cx);
8407 assert_eq!(
8408 view.selected_display_ranges(cx),
8409 vec![
8410 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
8411 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
8412 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
8413 ]
8414 );
8415 });
8416 }
8417
8418 #[gpui::test]
8419 fn test_select_next(cx: &mut gpui::MutableAppContext) {
8420 populate_settings(cx);
8421
8422 let (text, ranges) = marked_text_ranges("[abc]\n[abc] [abc]\ndefabc\n[abc]");
8423 let buffer = MultiBuffer::build_simple(&text, cx);
8424 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
8425
8426 view.update(cx, |view, cx| {
8427 view.select_ranges([ranges[1].start + 1..ranges[1].start + 1], None, cx);
8428 view.select_next(&SelectNext(false), cx);
8429 assert_eq!(view.selected_ranges(cx), &ranges[1..2]);
8430
8431 view.select_next(&SelectNext(false), cx);
8432 assert_eq!(view.selected_ranges(cx), &ranges[1..3]);
8433
8434 view.undo_selection(&UndoSelection, cx);
8435 assert_eq!(view.selected_ranges(cx), &ranges[1..2]);
8436
8437 view.redo_selection(&RedoSelection, cx);
8438 assert_eq!(view.selected_ranges(cx), &ranges[1..3]);
8439
8440 view.select_next(&SelectNext(false), cx);
8441 assert_eq!(view.selected_ranges(cx), &ranges[1..4]);
8442
8443 view.select_next(&SelectNext(false), cx);
8444 assert_eq!(view.selected_ranges(cx), &ranges[0..4]);
8445 });
8446 }
8447
8448 #[gpui::test]
8449 async fn test_select_larger_smaller_syntax_node(cx: &mut gpui::TestAppContext) {
8450 cx.update(populate_settings);
8451 let language = Arc::new(Language::new(
8452 LanguageConfig::default(),
8453 Some(tree_sitter_rust::language()),
8454 ));
8455
8456 let text = r#"
8457 use mod1::mod2::{mod3, mod4};
8458
8459 fn fn_1(param1: bool, param2: &str) {
8460 let var1 = "text";
8461 }
8462 "#
8463 .unindent();
8464
8465 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8466 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8467 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
8468 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
8469 .await;
8470
8471 view.update(cx, |view, cx| {
8472 view.select_display_ranges(
8473 &[
8474 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
8475 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
8476 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
8477 ],
8478 cx,
8479 );
8480 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8481 });
8482 assert_eq!(
8483 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8484 &[
8485 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
8486 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
8487 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
8488 ]
8489 );
8490
8491 view.update(cx, |view, cx| {
8492 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8493 });
8494 assert_eq!(
8495 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8496 &[
8497 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
8498 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
8499 ]
8500 );
8501
8502 view.update(cx, |view, cx| {
8503 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8504 });
8505 assert_eq!(
8506 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8507 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
8508 );
8509
8510 // Trying to expand the selected syntax node one more time has no effect.
8511 view.update(cx, |view, cx| {
8512 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8513 });
8514 assert_eq!(
8515 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8516 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
8517 );
8518
8519 view.update(cx, |view, cx| {
8520 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8521 });
8522 assert_eq!(
8523 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8524 &[
8525 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
8526 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
8527 ]
8528 );
8529
8530 view.update(cx, |view, cx| {
8531 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8532 });
8533 assert_eq!(
8534 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8535 &[
8536 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
8537 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
8538 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
8539 ]
8540 );
8541
8542 view.update(cx, |view, cx| {
8543 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8544 });
8545 assert_eq!(
8546 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8547 &[
8548 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
8549 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
8550 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
8551 ]
8552 );
8553
8554 // Trying to shrink the selected syntax node one more time has no effect.
8555 view.update(cx, |view, cx| {
8556 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8557 });
8558 assert_eq!(
8559 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8560 &[
8561 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
8562 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
8563 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
8564 ]
8565 );
8566
8567 // Ensure that we keep expanding the selection if the larger selection starts or ends within
8568 // a fold.
8569 view.update(cx, |view, cx| {
8570 view.fold_ranges(
8571 vec![
8572 Point::new(0, 21)..Point::new(0, 24),
8573 Point::new(3, 20)..Point::new(3, 22),
8574 ],
8575 cx,
8576 );
8577 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8578 });
8579 assert_eq!(
8580 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8581 &[
8582 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
8583 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
8584 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
8585 ]
8586 );
8587 }
8588
8589 #[gpui::test]
8590 async fn test_autoindent_selections(cx: &mut gpui::TestAppContext) {
8591 cx.update(populate_settings);
8592 let language = Arc::new(
8593 Language::new(
8594 LanguageConfig {
8595 brackets: vec![
8596 BracketPair {
8597 start: "{".to_string(),
8598 end: "}".to_string(),
8599 close: false,
8600 newline: true,
8601 },
8602 BracketPair {
8603 start: "(".to_string(),
8604 end: ")".to_string(),
8605 close: false,
8606 newline: true,
8607 },
8608 ],
8609 ..Default::default()
8610 },
8611 Some(tree_sitter_rust::language()),
8612 )
8613 .with_indents_query(
8614 r#"
8615 (_ "(" ")" @end) @indent
8616 (_ "{" "}" @end) @indent
8617 "#,
8618 )
8619 .unwrap(),
8620 );
8621
8622 let text = "fn a() {}";
8623
8624 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8625 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8626 let (_, editor) = cx.add_window(|cx| build_editor(buffer, cx));
8627 editor
8628 .condition(&cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
8629 .await;
8630
8631 editor.update(cx, |editor, cx| {
8632 editor.select_ranges([5..5, 8..8, 9..9], None, cx);
8633 editor.newline(&Newline, cx);
8634 assert_eq!(editor.text(cx), "fn a(\n \n) {\n \n}\n");
8635 assert_eq!(
8636 editor.selected_ranges(cx),
8637 &[
8638 Point::new(1, 4)..Point::new(1, 4),
8639 Point::new(3, 4)..Point::new(3, 4),
8640 Point::new(5, 0)..Point::new(5, 0)
8641 ]
8642 );
8643 });
8644 }
8645
8646 #[gpui::test]
8647 async fn test_autoclose_pairs(cx: &mut gpui::TestAppContext) {
8648 cx.update(populate_settings);
8649 let language = Arc::new(Language::new(
8650 LanguageConfig {
8651 brackets: vec![
8652 BracketPair {
8653 start: "{".to_string(),
8654 end: "}".to_string(),
8655 close: true,
8656 newline: true,
8657 },
8658 BracketPair {
8659 start: "/*".to_string(),
8660 end: " */".to_string(),
8661 close: true,
8662 newline: true,
8663 },
8664 ],
8665 autoclose_before: "})]".to_string(),
8666 ..Default::default()
8667 },
8668 Some(tree_sitter_rust::language()),
8669 ));
8670
8671 let text = r#"
8672 a
8673
8674 /
8675
8676 "#
8677 .unindent();
8678
8679 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8680 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8681 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
8682 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
8683 .await;
8684
8685 view.update(cx, |view, cx| {
8686 view.select_display_ranges(
8687 &[
8688 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
8689 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
8690 ],
8691 cx,
8692 );
8693
8694 view.handle_input(&Input("{".to_string()), cx);
8695 view.handle_input(&Input("{".to_string()), cx);
8696 view.handle_input(&Input("{".to_string()), cx);
8697 assert_eq!(
8698 view.text(cx),
8699 "
8700 {{{}}}
8701 {{{}}}
8702 /
8703
8704 "
8705 .unindent()
8706 );
8707
8708 view.move_right(&MoveRight, cx);
8709 view.handle_input(&Input("}".to_string()), cx);
8710 view.handle_input(&Input("}".to_string()), cx);
8711 view.handle_input(&Input("}".to_string()), cx);
8712 assert_eq!(
8713 view.text(cx),
8714 "
8715 {{{}}}}
8716 {{{}}}}
8717 /
8718
8719 "
8720 .unindent()
8721 );
8722
8723 view.undo(&Undo, cx);
8724 view.handle_input(&Input("/".to_string()), cx);
8725 view.handle_input(&Input("*".to_string()), cx);
8726 assert_eq!(
8727 view.text(cx),
8728 "
8729 /* */
8730 /* */
8731 /
8732
8733 "
8734 .unindent()
8735 );
8736
8737 view.undo(&Undo, cx);
8738 view.select_display_ranges(
8739 &[
8740 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
8741 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
8742 ],
8743 cx,
8744 );
8745 view.handle_input(&Input("*".to_string()), cx);
8746 assert_eq!(
8747 view.text(cx),
8748 "
8749 a
8750
8751 /*
8752 *
8753 "
8754 .unindent()
8755 );
8756
8757 // Don't autoclose if the next character isn't whitespace and isn't
8758 // listed in the language's "autoclose_before" section.
8759 view.finalize_last_transaction(cx);
8760 view.select_display_ranges(&[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)], cx);
8761 view.handle_input(&Input("{".to_string()), cx);
8762 assert_eq!(
8763 view.text(cx),
8764 "
8765 {a
8766
8767 /*
8768 *
8769 "
8770 .unindent()
8771 );
8772
8773 view.undo(&Undo, cx);
8774 view.select_display_ranges(&[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1)], cx);
8775 view.handle_input(&Input("{".to_string()), cx);
8776 assert_eq!(
8777 view.text(cx),
8778 "
8779 {a}
8780
8781 /*
8782 *
8783 "
8784 .unindent()
8785 );
8786 assert_eq!(
8787 view.selected_display_ranges(cx),
8788 [DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)]
8789 );
8790 });
8791 }
8792
8793 #[gpui::test]
8794 async fn test_snippets(cx: &mut gpui::TestAppContext) {
8795 cx.update(populate_settings);
8796
8797 let text = "
8798 a. b
8799 a. b
8800 a. b
8801 "
8802 .unindent();
8803 let buffer = cx.update(|cx| MultiBuffer::build_simple(&text, cx));
8804 let (_, editor) = cx.add_window(|cx| build_editor(buffer, cx));
8805
8806 editor.update(cx, |editor, cx| {
8807 let buffer = &editor.snapshot(cx).buffer_snapshot;
8808 let snippet = Snippet::parse("f(${1:one}, ${2:two}, ${1:three})$0").unwrap();
8809 let insertion_ranges = [
8810 Point::new(0, 2).to_offset(buffer)..Point::new(0, 2).to_offset(buffer),
8811 Point::new(1, 2).to_offset(buffer)..Point::new(1, 2).to_offset(buffer),
8812 Point::new(2, 2).to_offset(buffer)..Point::new(2, 2).to_offset(buffer),
8813 ];
8814
8815 editor
8816 .insert_snippet(&insertion_ranges, snippet, cx)
8817 .unwrap();
8818 assert_eq!(
8819 editor.text(cx),
8820 "
8821 a.f(one, two, three) b
8822 a.f(one, two, three) b
8823 a.f(one, two, three) b
8824 "
8825 .unindent()
8826 );
8827 assert_eq!(
8828 editor.selected_ranges::<Point>(cx),
8829 &[
8830 Point::new(0, 4)..Point::new(0, 7),
8831 Point::new(0, 14)..Point::new(0, 19),
8832 Point::new(1, 4)..Point::new(1, 7),
8833 Point::new(1, 14)..Point::new(1, 19),
8834 Point::new(2, 4)..Point::new(2, 7),
8835 Point::new(2, 14)..Point::new(2, 19),
8836 ]
8837 );
8838
8839 // Can't move earlier than the first tab stop
8840 editor.move_to_prev_snippet_tabstop(cx);
8841 assert_eq!(
8842 editor.selected_ranges::<Point>(cx),
8843 &[
8844 Point::new(0, 4)..Point::new(0, 7),
8845 Point::new(0, 14)..Point::new(0, 19),
8846 Point::new(1, 4)..Point::new(1, 7),
8847 Point::new(1, 14)..Point::new(1, 19),
8848 Point::new(2, 4)..Point::new(2, 7),
8849 Point::new(2, 14)..Point::new(2, 19),
8850 ]
8851 );
8852
8853 assert!(editor.move_to_next_snippet_tabstop(cx));
8854 assert_eq!(
8855 editor.selected_ranges::<Point>(cx),
8856 &[
8857 Point::new(0, 9)..Point::new(0, 12),
8858 Point::new(1, 9)..Point::new(1, 12),
8859 Point::new(2, 9)..Point::new(2, 12)
8860 ]
8861 );
8862
8863 editor.move_to_prev_snippet_tabstop(cx);
8864 assert_eq!(
8865 editor.selected_ranges::<Point>(cx),
8866 &[
8867 Point::new(0, 4)..Point::new(0, 7),
8868 Point::new(0, 14)..Point::new(0, 19),
8869 Point::new(1, 4)..Point::new(1, 7),
8870 Point::new(1, 14)..Point::new(1, 19),
8871 Point::new(2, 4)..Point::new(2, 7),
8872 Point::new(2, 14)..Point::new(2, 19),
8873 ]
8874 );
8875
8876 assert!(editor.move_to_next_snippet_tabstop(cx));
8877 assert!(editor.move_to_next_snippet_tabstop(cx));
8878 assert_eq!(
8879 editor.selected_ranges::<Point>(cx),
8880 &[
8881 Point::new(0, 20)..Point::new(0, 20),
8882 Point::new(1, 20)..Point::new(1, 20),
8883 Point::new(2, 20)..Point::new(2, 20)
8884 ]
8885 );
8886
8887 // As soon as the last tab stop is reached, snippet state is gone
8888 editor.move_to_prev_snippet_tabstop(cx);
8889 assert_eq!(
8890 editor.selected_ranges::<Point>(cx),
8891 &[
8892 Point::new(0, 20)..Point::new(0, 20),
8893 Point::new(1, 20)..Point::new(1, 20),
8894 Point::new(2, 20)..Point::new(2, 20)
8895 ]
8896 );
8897 });
8898 }
8899
8900 #[gpui::test]
8901 async fn test_format_during_save(cx: &mut gpui::TestAppContext) {
8902 cx.foreground().forbid_parking();
8903 cx.update(populate_settings);
8904
8905 let mut language = Language::new(
8906 LanguageConfig {
8907 name: "Rust".into(),
8908 path_suffixes: vec!["rs".to_string()],
8909 ..Default::default()
8910 },
8911 Some(tree_sitter_rust::language()),
8912 );
8913 let mut fake_servers = language.set_fake_lsp_adapter(FakeLspAdapter {
8914 capabilities: lsp::ServerCapabilities {
8915 document_formatting_provider: Some(lsp::OneOf::Left(true)),
8916 ..Default::default()
8917 },
8918 ..Default::default()
8919 });
8920
8921 let fs = FakeFs::new(cx.background().clone());
8922 fs.insert_file("/file.rs", Default::default()).await;
8923
8924 let project = Project::test(fs, cx);
8925 project.update(cx, |project, _| project.languages().add(Arc::new(language)));
8926
8927 let worktree_id = project
8928 .update(cx, |project, cx| {
8929 project.find_or_create_local_worktree("/file.rs", true, cx)
8930 })
8931 .await
8932 .unwrap()
8933 .0
8934 .read_with(cx, |tree, _| tree.id());
8935 let buffer = project
8936 .update(cx, |project, cx| project.open_buffer((worktree_id, ""), cx))
8937 .await
8938 .unwrap();
8939
8940 cx.foreground().start_waiting();
8941 let fake_server = fake_servers.next().await.unwrap();
8942
8943 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8944 let (_, editor) = cx.add_window(|cx| build_editor(buffer, cx));
8945 editor.update(cx, |editor, cx| editor.set_text("one\ntwo\nthree\n", cx));
8946 assert!(cx.read(|cx| editor.is_dirty(cx)));
8947
8948 let save = cx.update(|cx| editor.save(project.clone(), cx));
8949 fake_server
8950 .handle_request::<lsp::request::Formatting, _, _>(move |params, _| async move {
8951 assert_eq!(
8952 params.text_document.uri,
8953 lsp::Url::from_file_path("/file.rs").unwrap()
8954 );
8955 Ok(Some(vec![lsp::TextEdit::new(
8956 lsp::Range::new(lsp::Position::new(0, 3), lsp::Position::new(1, 0)),
8957 ", ".to_string(),
8958 )]))
8959 })
8960 .next()
8961 .await;
8962 cx.foreground().start_waiting();
8963 save.await.unwrap();
8964 assert_eq!(
8965 editor.read_with(cx, |editor, cx| editor.text(cx)),
8966 "one, two\nthree\n"
8967 );
8968 assert!(!cx.read(|cx| editor.is_dirty(cx)));
8969
8970 editor.update(cx, |editor, cx| editor.set_text("one\ntwo\nthree\n", cx));
8971 assert!(cx.read(|cx| editor.is_dirty(cx)));
8972
8973 // Ensure we can still save even if formatting hangs.
8974 fake_server.handle_request::<lsp::request::Formatting, _, _>(move |params, _| async move {
8975 assert_eq!(
8976 params.text_document.uri,
8977 lsp::Url::from_file_path("/file.rs").unwrap()
8978 );
8979 futures::future::pending::<()>().await;
8980 unreachable!()
8981 });
8982 let save = cx.update(|cx| editor.save(project.clone(), cx));
8983 cx.foreground().advance_clock(items::FORMAT_TIMEOUT);
8984 cx.foreground().start_waiting();
8985 save.await.unwrap();
8986 assert_eq!(
8987 editor.read_with(cx, |editor, cx| editor.text(cx)),
8988 "one\ntwo\nthree\n"
8989 );
8990 assert!(!cx.read(|cx| editor.is_dirty(cx)));
8991 }
8992
8993 #[gpui::test]
8994 async fn test_completion(cx: &mut gpui::TestAppContext) {
8995 cx.update(populate_settings);
8996
8997 let mut language = Language::new(
8998 LanguageConfig {
8999 name: "Rust".into(),
9000 path_suffixes: vec!["rs".to_string()],
9001 ..Default::default()
9002 },
9003 Some(tree_sitter_rust::language()),
9004 );
9005 let mut fake_servers = language.set_fake_lsp_adapter(FakeLspAdapter {
9006 capabilities: lsp::ServerCapabilities {
9007 completion_provider: Some(lsp::CompletionOptions {
9008 trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
9009 ..Default::default()
9010 }),
9011 ..Default::default()
9012 },
9013 ..Default::default()
9014 });
9015
9016 let text = "
9017 one
9018 two
9019 three
9020 "
9021 .unindent();
9022
9023 let fs = FakeFs::new(cx.background().clone());
9024 fs.insert_file("/file.rs", text).await;
9025
9026 let project = Project::test(fs, cx);
9027 project.update(cx, |project, _| project.languages().add(Arc::new(language)));
9028
9029 let worktree_id = project
9030 .update(cx, |project, cx| {
9031 project.find_or_create_local_worktree("/file.rs", true, cx)
9032 })
9033 .await
9034 .unwrap()
9035 .0
9036 .read_with(cx, |tree, _| tree.id());
9037 let buffer = project
9038 .update(cx, |project, cx| project.open_buffer((worktree_id, ""), cx))
9039 .await
9040 .unwrap();
9041 let mut fake_server = fake_servers.next().await.unwrap();
9042
9043 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
9044 let (_, editor) = cx.add_window(|cx| build_editor(buffer, cx));
9045
9046 editor.update(cx, |editor, cx| {
9047 editor.project = Some(project);
9048 editor.select_ranges([Point::new(0, 3)..Point::new(0, 3)], None, cx);
9049 editor.handle_input(&Input(".".to_string()), cx);
9050 });
9051
9052 handle_completion_request(
9053 &mut fake_server,
9054 "/file.rs",
9055 Point::new(0, 4),
9056 vec![
9057 (Point::new(0, 4)..Point::new(0, 4), "first_completion"),
9058 (Point::new(0, 4)..Point::new(0, 4), "second_completion"),
9059 ],
9060 )
9061 .await;
9062 editor
9063 .condition(&cx, |editor, _| editor.context_menu_visible())
9064 .await;
9065
9066 let apply_additional_edits = editor.update(cx, |editor, cx| {
9067 editor.move_down(&MoveDown, cx);
9068 let apply_additional_edits = editor
9069 .confirm_completion(&ConfirmCompletion(None), cx)
9070 .unwrap();
9071 assert_eq!(
9072 editor.text(cx),
9073 "
9074 one.second_completion
9075 two
9076 three
9077 "
9078 .unindent()
9079 );
9080 apply_additional_edits
9081 });
9082
9083 handle_resolve_completion_request(
9084 &mut fake_server,
9085 Some((Point::new(2, 5)..Point::new(2, 5), "\nadditional edit")),
9086 )
9087 .await;
9088 apply_additional_edits.await.unwrap();
9089 assert_eq!(
9090 editor.read_with(cx, |editor, cx| editor.text(cx)),
9091 "
9092 one.second_completion
9093 two
9094 three
9095 additional edit
9096 "
9097 .unindent()
9098 );
9099
9100 editor.update(cx, |editor, cx| {
9101 editor.select_ranges(
9102 [
9103 Point::new(1, 3)..Point::new(1, 3),
9104 Point::new(2, 5)..Point::new(2, 5),
9105 ],
9106 None,
9107 cx,
9108 );
9109
9110 editor.handle_input(&Input(" ".to_string()), cx);
9111 assert!(editor.context_menu.is_none());
9112 editor.handle_input(&Input("s".to_string()), cx);
9113 assert!(editor.context_menu.is_none());
9114 });
9115
9116 handle_completion_request(
9117 &mut fake_server,
9118 "/file.rs",
9119 Point::new(2, 7),
9120 vec![
9121 (Point::new(2, 6)..Point::new(2, 7), "fourth_completion"),
9122 (Point::new(2, 6)..Point::new(2, 7), "fifth_completion"),
9123 (Point::new(2, 6)..Point::new(2, 7), "sixth_completion"),
9124 ],
9125 )
9126 .await;
9127 editor
9128 .condition(&cx, |editor, _| editor.context_menu_visible())
9129 .await;
9130
9131 editor.update(cx, |editor, cx| {
9132 editor.handle_input(&Input("i".to_string()), cx);
9133 });
9134
9135 handle_completion_request(
9136 &mut fake_server,
9137 "/file.rs",
9138 Point::new(2, 8),
9139 vec![
9140 (Point::new(2, 6)..Point::new(2, 8), "fourth_completion"),
9141 (Point::new(2, 6)..Point::new(2, 8), "fifth_completion"),
9142 (Point::new(2, 6)..Point::new(2, 8), "sixth_completion"),
9143 ],
9144 )
9145 .await;
9146 editor
9147 .condition(&cx, |editor, _| editor.context_menu_visible())
9148 .await;
9149
9150 let apply_additional_edits = editor.update(cx, |editor, cx| {
9151 let apply_additional_edits = editor
9152 .confirm_completion(&ConfirmCompletion(None), cx)
9153 .unwrap();
9154 assert_eq!(
9155 editor.text(cx),
9156 "
9157 one.second_completion
9158 two sixth_completion
9159 three sixth_completion
9160 additional edit
9161 "
9162 .unindent()
9163 );
9164 apply_additional_edits
9165 });
9166 handle_resolve_completion_request(&mut fake_server, None).await;
9167 apply_additional_edits.await.unwrap();
9168
9169 async fn handle_completion_request(
9170 fake: &mut FakeLanguageServer,
9171 path: &'static str,
9172 position: Point,
9173 completions: Vec<(Range<Point>, &'static str)>,
9174 ) {
9175 fake.handle_request::<lsp::request::Completion, _, _>(move |params, _| {
9176 let completions = completions.clone();
9177 async move {
9178 assert_eq!(
9179 params.text_document_position.text_document.uri,
9180 lsp::Url::from_file_path(path).unwrap()
9181 );
9182 assert_eq!(
9183 params.text_document_position.position,
9184 lsp::Position::new(position.row, position.column)
9185 );
9186 Ok(Some(lsp::CompletionResponse::Array(
9187 completions
9188 .iter()
9189 .map(|(range, new_text)| lsp::CompletionItem {
9190 label: new_text.to_string(),
9191 text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
9192 range: lsp::Range::new(
9193 lsp::Position::new(range.start.row, range.start.column),
9194 lsp::Position::new(range.start.row, range.start.column),
9195 ),
9196 new_text: new_text.to_string(),
9197 })),
9198 ..Default::default()
9199 })
9200 .collect(),
9201 )))
9202 }
9203 })
9204 .next()
9205 .await;
9206 }
9207
9208 async fn handle_resolve_completion_request(
9209 fake: &mut FakeLanguageServer,
9210 edit: Option<(Range<Point>, &'static str)>,
9211 ) {
9212 fake.handle_request::<lsp::request::ResolveCompletionItem, _, _>(move |_, _| {
9213 let edit = edit.clone();
9214 async move {
9215 Ok(lsp::CompletionItem {
9216 additional_text_edits: edit.map(|(range, new_text)| {
9217 vec![lsp::TextEdit::new(
9218 lsp::Range::new(
9219 lsp::Position::new(range.start.row, range.start.column),
9220 lsp::Position::new(range.end.row, range.end.column),
9221 ),
9222 new_text.to_string(),
9223 )]
9224 }),
9225 ..Default::default()
9226 })
9227 }
9228 })
9229 .next()
9230 .await;
9231 }
9232 }
9233
9234 #[gpui::test]
9235 async fn test_toggle_comment(cx: &mut gpui::TestAppContext) {
9236 cx.update(populate_settings);
9237 let language = Arc::new(Language::new(
9238 LanguageConfig {
9239 line_comment: Some("// ".to_string()),
9240 ..Default::default()
9241 },
9242 Some(tree_sitter_rust::language()),
9243 ));
9244
9245 let text = "
9246 fn a() {
9247 //b();
9248 // c();
9249 // d();
9250 }
9251 "
9252 .unindent();
9253
9254 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
9255 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
9256 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
9257
9258 view.update(cx, |editor, cx| {
9259 // If multiple selections intersect a line, the line is only
9260 // toggled once.
9261 editor.select_display_ranges(
9262 &[
9263 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
9264 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
9265 ],
9266 cx,
9267 );
9268 editor.toggle_comments(&ToggleComments, cx);
9269 assert_eq!(
9270 editor.text(cx),
9271 "
9272 fn a() {
9273 b();
9274 c();
9275 d();
9276 }
9277 "
9278 .unindent()
9279 );
9280
9281 // The comment prefix is inserted at the same column for every line
9282 // in a selection.
9283 editor.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx);
9284 editor.toggle_comments(&ToggleComments, cx);
9285 assert_eq!(
9286 editor.text(cx),
9287 "
9288 fn a() {
9289 // b();
9290 // c();
9291 // d();
9292 }
9293 "
9294 .unindent()
9295 );
9296
9297 // If a selection ends at the beginning of a line, that line is not toggled.
9298 editor.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx);
9299 editor.toggle_comments(&ToggleComments, cx);
9300 assert_eq!(
9301 editor.text(cx),
9302 "
9303 fn a() {
9304 // b();
9305 c();
9306 // d();
9307 }
9308 "
9309 .unindent()
9310 );
9311 });
9312 }
9313
9314 #[gpui::test]
9315 fn test_editing_disjoint_excerpts(cx: &mut gpui::MutableAppContext) {
9316 populate_settings(cx);
9317 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
9318 let multibuffer = cx.add_model(|cx| {
9319 let mut multibuffer = MultiBuffer::new(0);
9320 multibuffer.push_excerpts(
9321 buffer.clone(),
9322 [
9323 Point::new(0, 0)..Point::new(0, 4),
9324 Point::new(1, 0)..Point::new(1, 4),
9325 ],
9326 cx,
9327 );
9328 multibuffer
9329 });
9330
9331 assert_eq!(multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb");
9332
9333 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(multibuffer, cx));
9334 view.update(cx, |view, cx| {
9335 assert_eq!(view.text(cx), "aaaa\nbbbb");
9336 view.select_ranges(
9337 [
9338 Point::new(0, 0)..Point::new(0, 0),
9339 Point::new(1, 0)..Point::new(1, 0),
9340 ],
9341 None,
9342 cx,
9343 );
9344
9345 view.handle_input(&Input("X".to_string()), cx);
9346 assert_eq!(view.text(cx), "Xaaaa\nXbbbb");
9347 assert_eq!(
9348 view.selected_ranges(cx),
9349 [
9350 Point::new(0, 1)..Point::new(0, 1),
9351 Point::new(1, 1)..Point::new(1, 1),
9352 ]
9353 )
9354 });
9355 }
9356
9357 #[gpui::test]
9358 fn test_editing_overlapping_excerpts(cx: &mut gpui::MutableAppContext) {
9359 populate_settings(cx);
9360 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
9361 let multibuffer = cx.add_model(|cx| {
9362 let mut multibuffer = MultiBuffer::new(0);
9363 multibuffer.push_excerpts(
9364 buffer,
9365 [
9366 Point::new(0, 0)..Point::new(1, 4),
9367 Point::new(1, 0)..Point::new(2, 4),
9368 ],
9369 cx,
9370 );
9371 multibuffer
9372 });
9373
9374 assert_eq!(
9375 multibuffer.read(cx).read(cx).text(),
9376 "aaaa\nbbbb\nbbbb\ncccc"
9377 );
9378
9379 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(multibuffer, cx));
9380 view.update(cx, |view, cx| {
9381 view.select_ranges(
9382 [
9383 Point::new(1, 1)..Point::new(1, 1),
9384 Point::new(2, 3)..Point::new(2, 3),
9385 ],
9386 None,
9387 cx,
9388 );
9389
9390 view.handle_input(&Input("X".to_string()), cx);
9391 assert_eq!(view.text(cx), "aaaa\nbXbbXb\nbXbbXb\ncccc");
9392 assert_eq!(
9393 view.selected_ranges(cx),
9394 [
9395 Point::new(1, 2)..Point::new(1, 2),
9396 Point::new(2, 5)..Point::new(2, 5),
9397 ]
9398 );
9399
9400 view.newline(&Newline, cx);
9401 assert_eq!(view.text(cx), "aaaa\nbX\nbbX\nb\nbX\nbbX\nb\ncccc");
9402 assert_eq!(
9403 view.selected_ranges(cx),
9404 [
9405 Point::new(2, 0)..Point::new(2, 0),
9406 Point::new(6, 0)..Point::new(6, 0),
9407 ]
9408 );
9409 });
9410 }
9411
9412 #[gpui::test]
9413 fn test_refresh_selections(cx: &mut gpui::MutableAppContext) {
9414 populate_settings(cx);
9415 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
9416 let mut excerpt1_id = None;
9417 let multibuffer = cx.add_model(|cx| {
9418 let mut multibuffer = MultiBuffer::new(0);
9419 excerpt1_id = multibuffer
9420 .push_excerpts(
9421 buffer.clone(),
9422 [
9423 Point::new(0, 0)..Point::new(1, 4),
9424 Point::new(1, 0)..Point::new(2, 4),
9425 ],
9426 cx,
9427 )
9428 .into_iter()
9429 .next();
9430 multibuffer
9431 });
9432 assert_eq!(
9433 multibuffer.read(cx).read(cx).text(),
9434 "aaaa\nbbbb\nbbbb\ncccc"
9435 );
9436 let (_, editor) = cx.add_window(Default::default(), |cx| {
9437 let mut editor = build_editor(multibuffer.clone(), cx);
9438 let snapshot = editor.snapshot(cx);
9439 editor.select_ranges([Point::new(1, 3)..Point::new(1, 3)], None, cx);
9440 editor.begin_selection(Point::new(2, 1).to_display_point(&snapshot), true, 1, cx);
9441 assert_eq!(
9442 editor.selected_ranges(cx),
9443 [
9444 Point::new(1, 3)..Point::new(1, 3),
9445 Point::new(2, 1)..Point::new(2, 1),
9446 ]
9447 );
9448 editor
9449 });
9450
9451 // Refreshing selections is a no-op when excerpts haven't changed.
9452 editor.update(cx, |editor, cx| {
9453 editor.refresh_selections(cx);
9454 assert_eq!(
9455 editor.selected_ranges(cx),
9456 [
9457 Point::new(1, 3)..Point::new(1, 3),
9458 Point::new(2, 1)..Point::new(2, 1),
9459 ]
9460 );
9461 });
9462
9463 multibuffer.update(cx, |multibuffer, cx| {
9464 multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx);
9465 });
9466 editor.update(cx, |editor, cx| {
9467 // Removing an excerpt causes the first selection to become degenerate.
9468 assert_eq!(
9469 editor.selected_ranges(cx),
9470 [
9471 Point::new(0, 0)..Point::new(0, 0),
9472 Point::new(0, 1)..Point::new(0, 1)
9473 ]
9474 );
9475
9476 // Refreshing selections will relocate the first selection to the original buffer
9477 // location.
9478 editor.refresh_selections(cx);
9479 assert_eq!(
9480 editor.selected_ranges(cx),
9481 [
9482 Point::new(0, 1)..Point::new(0, 1),
9483 Point::new(0, 3)..Point::new(0, 3)
9484 ]
9485 );
9486 assert!(editor.pending_selection.is_some());
9487 });
9488 }
9489
9490 #[gpui::test]
9491 fn test_refresh_selections_while_selecting_with_mouse(cx: &mut gpui::MutableAppContext) {
9492 populate_settings(cx);
9493 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
9494 let mut excerpt1_id = None;
9495 let multibuffer = cx.add_model(|cx| {
9496 let mut multibuffer = MultiBuffer::new(0);
9497 excerpt1_id = multibuffer
9498 .push_excerpts(
9499 buffer.clone(),
9500 [
9501 Point::new(0, 0)..Point::new(1, 4),
9502 Point::new(1, 0)..Point::new(2, 4),
9503 ],
9504 cx,
9505 )
9506 .into_iter()
9507 .next();
9508 multibuffer
9509 });
9510 assert_eq!(
9511 multibuffer.read(cx).read(cx).text(),
9512 "aaaa\nbbbb\nbbbb\ncccc"
9513 );
9514 let (_, editor) = cx.add_window(Default::default(), |cx| {
9515 let mut editor = build_editor(multibuffer.clone(), cx);
9516 let snapshot = editor.snapshot(cx);
9517 editor.begin_selection(Point::new(1, 3).to_display_point(&snapshot), false, 1, cx);
9518 assert_eq!(
9519 editor.selected_ranges(cx),
9520 [Point::new(1, 3)..Point::new(1, 3)]
9521 );
9522 editor
9523 });
9524
9525 multibuffer.update(cx, |multibuffer, cx| {
9526 multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx);
9527 });
9528 editor.update(cx, |editor, cx| {
9529 assert_eq!(
9530 editor.selected_ranges(cx),
9531 [Point::new(0, 0)..Point::new(0, 0)]
9532 );
9533
9534 // Ensure we don't panic when selections are refreshed and that the pending selection is finalized.
9535 editor.refresh_selections(cx);
9536 assert_eq!(
9537 editor.selected_ranges(cx),
9538 [Point::new(0, 3)..Point::new(0, 3)]
9539 );
9540 assert!(editor.pending_selection.is_some());
9541 });
9542 }
9543
9544 #[gpui::test]
9545 async fn test_extra_newline_insertion(cx: &mut gpui::TestAppContext) {
9546 cx.update(populate_settings);
9547 let language = Arc::new(Language::new(
9548 LanguageConfig {
9549 brackets: vec![
9550 BracketPair {
9551 start: "{".to_string(),
9552 end: "}".to_string(),
9553 close: true,
9554 newline: true,
9555 },
9556 BracketPair {
9557 start: "/* ".to_string(),
9558 end: " */".to_string(),
9559 close: true,
9560 newline: true,
9561 },
9562 ],
9563 ..Default::default()
9564 },
9565 Some(tree_sitter_rust::language()),
9566 ));
9567
9568 let text = concat!(
9569 "{ }\n", // Suppress rustfmt
9570 " x\n", //
9571 " /* */\n", //
9572 "x\n", //
9573 "{{} }\n", //
9574 );
9575
9576 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
9577 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
9578 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
9579 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
9580 .await;
9581
9582 view.update(cx, |view, cx| {
9583 view.select_display_ranges(
9584 &[
9585 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
9586 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
9587 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
9588 ],
9589 cx,
9590 );
9591 view.newline(&Newline, cx);
9592
9593 assert_eq!(
9594 view.buffer().read(cx).read(cx).text(),
9595 concat!(
9596 "{ \n", // Suppress rustfmt
9597 "\n", //
9598 "}\n", //
9599 " x\n", //
9600 " /* \n", //
9601 " \n", //
9602 " */\n", //
9603 "x\n", //
9604 "{{} \n", //
9605 "}\n", //
9606 )
9607 );
9608 });
9609 }
9610
9611 #[gpui::test]
9612 fn test_highlighted_ranges(cx: &mut gpui::MutableAppContext) {
9613 let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
9614 populate_settings(cx);
9615 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
9616
9617 editor.update(cx, |editor, cx| {
9618 struct Type1;
9619 struct Type2;
9620
9621 let buffer = buffer.read(cx).snapshot(cx);
9622
9623 let anchor_range = |range: Range<Point>| {
9624 buffer.anchor_after(range.start)..buffer.anchor_after(range.end)
9625 };
9626
9627 editor.highlight_background::<Type1>(
9628 vec![
9629 anchor_range(Point::new(2, 1)..Point::new(2, 3)),
9630 anchor_range(Point::new(4, 2)..Point::new(4, 4)),
9631 anchor_range(Point::new(6, 3)..Point::new(6, 5)),
9632 anchor_range(Point::new(8, 4)..Point::new(8, 6)),
9633 ],
9634 Color::red(),
9635 cx,
9636 );
9637 editor.highlight_background::<Type2>(
9638 vec![
9639 anchor_range(Point::new(3, 2)..Point::new(3, 5)),
9640 anchor_range(Point::new(5, 3)..Point::new(5, 6)),
9641 anchor_range(Point::new(7, 4)..Point::new(7, 7)),
9642 anchor_range(Point::new(9, 5)..Point::new(9, 8)),
9643 ],
9644 Color::green(),
9645 cx,
9646 );
9647
9648 let snapshot = editor.snapshot(cx);
9649 let mut highlighted_ranges = editor.background_highlights_in_range(
9650 anchor_range(Point::new(3, 4)..Point::new(7, 4)),
9651 &snapshot,
9652 );
9653 // Enforce a consistent ordering based on color without relying on the ordering of the
9654 // highlight's `TypeId` which is non-deterministic.
9655 highlighted_ranges.sort_unstable_by_key(|(_, color)| *color);
9656 assert_eq!(
9657 highlighted_ranges,
9658 &[
9659 (
9660 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 5),
9661 Color::green(),
9662 ),
9663 (
9664 DisplayPoint::new(5, 3)..DisplayPoint::new(5, 6),
9665 Color::green(),
9666 ),
9667 (
9668 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 4),
9669 Color::red(),
9670 ),
9671 (
9672 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
9673 Color::red(),
9674 ),
9675 ]
9676 );
9677 assert_eq!(
9678 editor.background_highlights_in_range(
9679 anchor_range(Point::new(5, 6)..Point::new(6, 4)),
9680 &snapshot,
9681 ),
9682 &[(
9683 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
9684 Color::red(),
9685 )]
9686 );
9687 });
9688 }
9689
9690 #[gpui::test]
9691 fn test_following(cx: &mut gpui::MutableAppContext) {
9692 let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
9693 populate_settings(cx);
9694
9695 let (_, leader) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
9696 let (_, follower) = cx.add_window(
9697 WindowOptions {
9698 bounds: WindowBounds::Fixed(RectF::from_points(vec2f(0., 0.), vec2f(10., 80.))),
9699 ..Default::default()
9700 },
9701 |cx| build_editor(buffer.clone(), cx),
9702 );
9703
9704 let pending_update = Rc::new(RefCell::new(None));
9705 follower.update(cx, {
9706 let update = pending_update.clone();
9707 |_, cx| {
9708 cx.subscribe(&leader, move |_, leader, event, cx| {
9709 leader
9710 .read(cx)
9711 .add_event_to_update_proto(event, &mut *update.borrow_mut(), cx);
9712 })
9713 .detach();
9714 }
9715 });
9716
9717 // Update the selections only
9718 leader.update(cx, |leader, cx| {
9719 leader.select_ranges([1..1], None, cx);
9720 });
9721 follower.update(cx, |follower, cx| {
9722 follower
9723 .apply_update_proto(pending_update.borrow_mut().take().unwrap(), cx)
9724 .unwrap();
9725 });
9726 assert_eq!(follower.read(cx).selected_ranges(cx), vec![1..1]);
9727
9728 // Update the scroll position only
9729 leader.update(cx, |leader, cx| {
9730 leader.set_scroll_position(vec2f(1.5, 3.5), cx);
9731 });
9732 follower.update(cx, |follower, cx| {
9733 follower
9734 .apply_update_proto(pending_update.borrow_mut().take().unwrap(), cx)
9735 .unwrap();
9736 });
9737 assert_eq!(
9738 follower.update(cx, |follower, cx| follower.scroll_position(cx)),
9739 vec2f(1.5, 3.5)
9740 );
9741
9742 // Update the selections and scroll position
9743 leader.update(cx, |leader, cx| {
9744 leader.select_ranges([0..0], None, cx);
9745 leader.request_autoscroll(Autoscroll::Newest, cx);
9746 leader.set_scroll_position(vec2f(1.5, 3.5), cx);
9747 });
9748 follower.update(cx, |follower, cx| {
9749 let initial_scroll_position = follower.scroll_position(cx);
9750 follower
9751 .apply_update_proto(pending_update.borrow_mut().take().unwrap(), cx)
9752 .unwrap();
9753 assert_eq!(follower.scroll_position(cx), initial_scroll_position);
9754 assert!(follower.autoscroll_request.is_some());
9755 });
9756 assert_eq!(follower.read(cx).selected_ranges(cx), vec![0..0]);
9757
9758 // Creating a pending selection that precedes another selection
9759 leader.update(cx, |leader, cx| {
9760 leader.select_ranges([1..1], None, cx);
9761 leader.begin_selection(DisplayPoint::new(0, 0), true, 1, cx);
9762 });
9763 follower.update(cx, |follower, cx| {
9764 follower
9765 .apply_update_proto(pending_update.borrow_mut().take().unwrap(), cx)
9766 .unwrap();
9767 });
9768 assert_eq!(follower.read(cx).selected_ranges(cx), vec![0..0, 1..1]);
9769
9770 // Extend the pending selection so that it surrounds another selection
9771 leader.update(cx, |leader, cx| {
9772 leader.extend_selection(DisplayPoint::new(0, 2), 1, cx);
9773 });
9774 follower.update(cx, |follower, cx| {
9775 follower
9776 .apply_update_proto(pending_update.borrow_mut().take().unwrap(), cx)
9777 .unwrap();
9778 });
9779 assert_eq!(follower.read(cx).selected_ranges(cx), vec![0..2]);
9780 }
9781
9782 #[test]
9783 fn test_combine_syntax_and_fuzzy_match_highlights() {
9784 let string = "abcdefghijklmnop";
9785 let syntax_ranges = [
9786 (
9787 0..3,
9788 HighlightStyle {
9789 color: Some(Color::red()),
9790 ..Default::default()
9791 },
9792 ),
9793 (
9794 4..8,
9795 HighlightStyle {
9796 color: Some(Color::green()),
9797 ..Default::default()
9798 },
9799 ),
9800 ];
9801 let match_indices = [4, 6, 7, 8];
9802 assert_eq!(
9803 combine_syntax_and_fuzzy_match_highlights(
9804 &string,
9805 Default::default(),
9806 syntax_ranges.into_iter(),
9807 &match_indices,
9808 ),
9809 &[
9810 (
9811 0..3,
9812 HighlightStyle {
9813 color: Some(Color::red()),
9814 ..Default::default()
9815 },
9816 ),
9817 (
9818 4..5,
9819 HighlightStyle {
9820 color: Some(Color::green()),
9821 weight: Some(fonts::Weight::BOLD),
9822 ..Default::default()
9823 },
9824 ),
9825 (
9826 5..6,
9827 HighlightStyle {
9828 color: Some(Color::green()),
9829 ..Default::default()
9830 },
9831 ),
9832 (
9833 6..8,
9834 HighlightStyle {
9835 color: Some(Color::green()),
9836 weight: Some(fonts::Weight::BOLD),
9837 ..Default::default()
9838 },
9839 ),
9840 (
9841 8..9,
9842 HighlightStyle {
9843 weight: Some(fonts::Weight::BOLD),
9844 ..Default::default()
9845 },
9846 ),
9847 ]
9848 );
9849 }
9850
9851 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
9852 let point = DisplayPoint::new(row as u32, column as u32);
9853 point..point
9854 }
9855
9856 fn build_editor(buffer: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Editor>) -> Editor {
9857 Editor::new(EditorMode::Full, buffer, None, None, cx)
9858 }
9859
9860 fn populate_settings(cx: &mut gpui::MutableAppContext) {
9861 let settings = Settings::test(cx);
9862 cx.set_global(settings);
9863 }
9864
9865 fn assert_selection_ranges(
9866 marked_text: &str,
9867 selection_marker_pairs: Vec<(char, char)>,
9868 view: &mut Editor,
9869 cx: &mut ViewContext<Editor>,
9870 ) {
9871 let snapshot = view.snapshot(cx).display_snapshot;
9872 let mut marker_chars = Vec::new();
9873 for (start, end) in selection_marker_pairs.iter() {
9874 marker_chars.push(*start);
9875 marker_chars.push(*end);
9876 }
9877 let (_, markers) = marked_text_by(marked_text, marker_chars);
9878 let asserted_ranges: Vec<Range<DisplayPoint>> = selection_marker_pairs
9879 .iter()
9880 .map(|(start, end)| {
9881 let start = markers.get(start).unwrap()[0].to_display_point(&snapshot);
9882 let end = markers.get(end).unwrap()[0].to_display_point(&snapshot);
9883 start..end
9884 })
9885 .collect();
9886 assert_eq!(
9887 view.selected_display_ranges(cx),
9888 &asserted_ranges[..],
9889 "Assert selections are {}",
9890 marked_text
9891 );
9892 }
9893}
9894
9895trait RangeExt<T> {
9896 fn sorted(&self) -> Range<T>;
9897 fn to_inclusive(&self) -> RangeInclusive<T>;
9898}
9899
9900impl<T: Ord + Clone> RangeExt<T> for Range<T> {
9901 fn sorted(&self) -> Self {
9902 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
9903 }
9904
9905 fn to_inclusive(&self) -> RangeInclusive<T> {
9906 self.start.clone()..=self.end.clone()
9907 }
9908}