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 clock::ReplicaId;
12use collections::{HashMap, HashSet};
13pub use display_map::DisplayPoint;
14use display_map::*;
15pub use element::*;
16use gpui::{
17 action,
18 elements::*,
19 fonts::TextStyle,
20 geometry::vector::{vec2f, Vector2F},
21 keymap::Binding,
22 text_layout, AppContext, ClipboardItem, Element, ElementBox, Entity, ModelHandle,
23 MutableAppContext, RenderContext, View, ViewContext, WeakModelHandle, WeakViewHandle,
24};
25use items::BufferItemHandle;
26use itertools::Itertools as _;
27use language::{
28 AnchorRangeExt as _, BracketPair, Buffer, Diagnostic, DiagnosticSeverity, Language, Point,
29 Selection, SelectionGoal, TransactionId,
30};
31pub use multi_buffer::{
32 Anchor, AnchorRangeExt, ExcerptId, ExcerptProperties, MultiBuffer, ToOffset, ToPoint,
33};
34use multi_buffer::{MultiBufferChunks, MultiBufferSnapshot};
35use postage::watch;
36use serde::{Deserialize, Serialize};
37use smallvec::SmallVec;
38use smol::Timer;
39use std::{
40 cmp,
41 iter::{self, FromIterator},
42 mem,
43 ops::{Deref, Range, RangeInclusive, Sub},
44 sync::Arc,
45 time::{Duration, Instant},
46};
47use sum_tree::Bias;
48use text::rope::TextDimension;
49use theme::{DiagnosticStyle, EditorStyle};
50use util::post_inc;
51use workspace::{ItemNavHistory, PathOpener, Workspace};
52
53const CURSOR_BLINK_INTERVAL: Duration = Duration::from_millis(500);
54const MAX_LINE_LEN: usize = 1024;
55const MIN_NAVIGATION_HISTORY_ROW_DELTA: i64 = 10;
56
57action!(Cancel);
58action!(Backspace);
59action!(Delete);
60action!(Input, String);
61action!(Newline);
62action!(Tab);
63action!(Outdent);
64action!(DeleteLine);
65action!(DeleteToPreviousWordBoundary);
66action!(DeleteToNextWordBoundary);
67action!(DeleteToBeginningOfLine);
68action!(DeleteToEndOfLine);
69action!(CutToEndOfLine);
70action!(DuplicateLine);
71action!(MoveLineUp);
72action!(MoveLineDown);
73action!(Cut);
74action!(Copy);
75action!(Paste);
76action!(Undo);
77action!(Redo);
78action!(MoveUp);
79action!(MoveDown);
80action!(MoveLeft);
81action!(MoveRight);
82action!(MoveToPreviousWordBoundary);
83action!(MoveToNextWordBoundary);
84action!(MoveToBeginningOfLine);
85action!(MoveToEndOfLine);
86action!(MoveToBeginning);
87action!(MoveToEnd);
88action!(SelectUp);
89action!(SelectDown);
90action!(SelectLeft);
91action!(SelectRight);
92action!(SelectToPreviousWordBoundary);
93action!(SelectToNextWordBoundary);
94action!(SelectToBeginningOfLine, bool);
95action!(SelectToEndOfLine);
96action!(SelectToBeginning);
97action!(SelectToEnd);
98action!(SelectAll);
99action!(SelectLine);
100action!(SplitSelectionIntoLines);
101action!(AddSelectionAbove);
102action!(AddSelectionBelow);
103action!(SelectNext, bool);
104action!(ToggleComments);
105action!(SelectLargerSyntaxNode);
106action!(SelectSmallerSyntaxNode);
107action!(MoveToEnclosingBracket);
108action!(ShowNextDiagnostic);
109action!(GoToDefinition);
110action!(PageUp);
111action!(PageDown);
112action!(Fold);
113action!(Unfold);
114action!(FoldSelectedRanges);
115action!(Scroll, Vector2F);
116action!(Select, SelectPhase);
117
118pub fn init(cx: &mut MutableAppContext, path_openers: &mut Vec<Box<dyn PathOpener>>) {
119 path_openers.push(Box::new(items::BufferOpener));
120 cx.add_bindings(vec![
121 Binding::new("escape", Cancel, Some("Editor")),
122 Binding::new("backspace", Backspace, Some("Editor")),
123 Binding::new("ctrl-h", Backspace, Some("Editor")),
124 Binding::new("delete", Delete, Some("Editor")),
125 Binding::new("ctrl-d", Delete, Some("Editor")),
126 Binding::new("enter", Newline, Some("Editor && mode == full")),
127 Binding::new(
128 "alt-enter",
129 Input("\n".into()),
130 Some("Editor && mode == auto_height"),
131 ),
132 Binding::new("tab", Tab, Some("Editor")),
133 Binding::new("shift-tab", Outdent, Some("Editor")),
134 Binding::new("ctrl-shift-K", DeleteLine, Some("Editor")),
135 Binding::new(
136 "alt-backspace",
137 DeleteToPreviousWordBoundary,
138 Some("Editor"),
139 ),
140 Binding::new("alt-h", DeleteToPreviousWordBoundary, Some("Editor")),
141 Binding::new("alt-delete", DeleteToNextWordBoundary, Some("Editor")),
142 Binding::new("alt-d", DeleteToNextWordBoundary, Some("Editor")),
143 Binding::new("cmd-backspace", DeleteToBeginningOfLine, Some("Editor")),
144 Binding::new("cmd-delete", DeleteToEndOfLine, Some("Editor")),
145 Binding::new("ctrl-k", CutToEndOfLine, Some("Editor")),
146 Binding::new("cmd-shift-D", DuplicateLine, Some("Editor")),
147 Binding::new("ctrl-cmd-up", MoveLineUp, Some("Editor")),
148 Binding::new("ctrl-cmd-down", MoveLineDown, Some("Editor")),
149 Binding::new("cmd-x", Cut, Some("Editor")),
150 Binding::new("cmd-c", Copy, Some("Editor")),
151 Binding::new("cmd-v", Paste, Some("Editor")),
152 Binding::new("cmd-z", Undo, Some("Editor")),
153 Binding::new("cmd-shift-Z", Redo, Some("Editor")),
154 Binding::new("up", MoveUp, Some("Editor")),
155 Binding::new("down", MoveDown, Some("Editor")),
156 Binding::new("left", MoveLeft, Some("Editor")),
157 Binding::new("right", MoveRight, Some("Editor")),
158 Binding::new("ctrl-p", MoveUp, Some("Editor")),
159 Binding::new("ctrl-n", MoveDown, Some("Editor")),
160 Binding::new("ctrl-b", MoveLeft, Some("Editor")),
161 Binding::new("ctrl-f", MoveRight, Some("Editor")),
162 Binding::new("alt-left", MoveToPreviousWordBoundary, Some("Editor")),
163 Binding::new("alt-b", MoveToPreviousWordBoundary, Some("Editor")),
164 Binding::new("alt-right", MoveToNextWordBoundary, Some("Editor")),
165 Binding::new("alt-f", MoveToNextWordBoundary, Some("Editor")),
166 Binding::new("cmd-left", MoveToBeginningOfLine, Some("Editor")),
167 Binding::new("ctrl-a", MoveToBeginningOfLine, Some("Editor")),
168 Binding::new("cmd-right", MoveToEndOfLine, Some("Editor")),
169 Binding::new("ctrl-e", MoveToEndOfLine, Some("Editor")),
170 Binding::new("cmd-up", MoveToBeginning, Some("Editor")),
171 Binding::new("cmd-down", MoveToEnd, Some("Editor")),
172 Binding::new("shift-up", SelectUp, Some("Editor")),
173 Binding::new("ctrl-shift-P", SelectUp, Some("Editor")),
174 Binding::new("shift-down", SelectDown, Some("Editor")),
175 Binding::new("ctrl-shift-N", SelectDown, Some("Editor")),
176 Binding::new("shift-left", SelectLeft, Some("Editor")),
177 Binding::new("ctrl-shift-B", SelectLeft, Some("Editor")),
178 Binding::new("shift-right", SelectRight, Some("Editor")),
179 Binding::new("ctrl-shift-F", SelectRight, Some("Editor")),
180 Binding::new(
181 "alt-shift-left",
182 SelectToPreviousWordBoundary,
183 Some("Editor"),
184 ),
185 Binding::new("alt-shift-B", SelectToPreviousWordBoundary, Some("Editor")),
186 Binding::new("alt-shift-right", SelectToNextWordBoundary, Some("Editor")),
187 Binding::new("alt-shift-F", SelectToNextWordBoundary, Some("Editor")),
188 Binding::new(
189 "cmd-shift-left",
190 SelectToBeginningOfLine(true),
191 Some("Editor"),
192 ),
193 Binding::new(
194 "ctrl-shift-A",
195 SelectToBeginningOfLine(true),
196 Some("Editor"),
197 ),
198 Binding::new("cmd-shift-right", SelectToEndOfLine, Some("Editor")),
199 Binding::new("ctrl-shift-E", SelectToEndOfLine, Some("Editor")),
200 Binding::new("cmd-shift-up", SelectToBeginning, Some("Editor")),
201 Binding::new("cmd-shift-down", SelectToEnd, Some("Editor")),
202 Binding::new("cmd-a", SelectAll, Some("Editor")),
203 Binding::new("cmd-l", SelectLine, Some("Editor")),
204 Binding::new("cmd-shift-L", SplitSelectionIntoLines, Some("Editor")),
205 Binding::new("cmd-alt-up", AddSelectionAbove, Some("Editor")),
206 Binding::new("cmd-ctrl-p", AddSelectionAbove, Some("Editor")),
207 Binding::new("cmd-alt-down", AddSelectionBelow, Some("Editor")),
208 Binding::new("cmd-ctrl-n", AddSelectionBelow, Some("Editor")),
209 Binding::new("cmd-d", SelectNext(false), Some("Editor")),
210 Binding::new("cmd-k cmd-d", SelectNext(true), Some("Editor")),
211 Binding::new("cmd-/", ToggleComments, Some("Editor")),
212 Binding::new("alt-up", SelectLargerSyntaxNode, Some("Editor")),
213 Binding::new("ctrl-w", SelectLargerSyntaxNode, Some("Editor")),
214 Binding::new("alt-down", SelectSmallerSyntaxNode, Some("Editor")),
215 Binding::new("ctrl-shift-W", SelectSmallerSyntaxNode, Some("Editor")),
216 Binding::new("f8", ShowNextDiagnostic, Some("Editor")),
217 Binding::new("f12", GoToDefinition, Some("Editor")),
218 Binding::new("ctrl-m", MoveToEnclosingBracket, Some("Editor")),
219 Binding::new("pageup", PageUp, Some("Editor")),
220 Binding::new("pagedown", PageDown, Some("Editor")),
221 Binding::new("alt-cmd-[", Fold, Some("Editor")),
222 Binding::new("alt-cmd-]", Unfold, Some("Editor")),
223 Binding::new("alt-cmd-f", FoldSelectedRanges, Some("Editor")),
224 ]);
225
226 cx.add_action(Editor::open_new);
227 cx.add_action(|this: &mut Editor, action: &Scroll, cx| this.set_scroll_position(action.0, cx));
228 cx.add_action(Editor::select);
229 cx.add_action(Editor::cancel);
230 cx.add_action(Editor::handle_input);
231 cx.add_action(Editor::newline);
232 cx.add_action(Editor::backspace);
233 cx.add_action(Editor::delete);
234 cx.add_action(Editor::tab);
235 cx.add_action(Editor::outdent);
236 cx.add_action(Editor::delete_line);
237 cx.add_action(Editor::delete_to_previous_word_boundary);
238 cx.add_action(Editor::delete_to_next_word_boundary);
239 cx.add_action(Editor::delete_to_beginning_of_line);
240 cx.add_action(Editor::delete_to_end_of_line);
241 cx.add_action(Editor::cut_to_end_of_line);
242 cx.add_action(Editor::duplicate_line);
243 cx.add_action(Editor::move_line_up);
244 cx.add_action(Editor::move_line_down);
245 cx.add_action(Editor::cut);
246 cx.add_action(Editor::copy);
247 cx.add_action(Editor::paste);
248 cx.add_action(Editor::undo);
249 cx.add_action(Editor::redo);
250 cx.add_action(Editor::move_up);
251 cx.add_action(Editor::move_down);
252 cx.add_action(Editor::move_left);
253 cx.add_action(Editor::move_right);
254 cx.add_action(Editor::move_to_previous_word_boundary);
255 cx.add_action(Editor::move_to_next_word_boundary);
256 cx.add_action(Editor::move_to_beginning_of_line);
257 cx.add_action(Editor::move_to_end_of_line);
258 cx.add_action(Editor::move_to_beginning);
259 cx.add_action(Editor::move_to_end);
260 cx.add_action(Editor::select_up);
261 cx.add_action(Editor::select_down);
262 cx.add_action(Editor::select_left);
263 cx.add_action(Editor::select_right);
264 cx.add_action(Editor::select_to_previous_word_boundary);
265 cx.add_action(Editor::select_to_next_word_boundary);
266 cx.add_action(Editor::select_to_beginning_of_line);
267 cx.add_action(Editor::select_to_end_of_line);
268 cx.add_action(Editor::select_to_beginning);
269 cx.add_action(Editor::select_to_end);
270 cx.add_action(Editor::select_all);
271 cx.add_action(Editor::select_line);
272 cx.add_action(Editor::split_selection_into_lines);
273 cx.add_action(Editor::add_selection_above);
274 cx.add_action(Editor::add_selection_below);
275 cx.add_action(Editor::select_next);
276 cx.add_action(Editor::toggle_comments);
277 cx.add_action(Editor::select_larger_syntax_node);
278 cx.add_action(Editor::select_smaller_syntax_node);
279 cx.add_action(Editor::move_to_enclosing_bracket);
280 cx.add_action(Editor::show_next_diagnostic);
281 cx.add_action(Editor::go_to_definition);
282 cx.add_action(Editor::page_up);
283 cx.add_action(Editor::page_down);
284 cx.add_action(Editor::fold);
285 cx.add_action(Editor::unfold);
286 cx.add_action(Editor::fold_selected_ranges);
287}
288
289trait SelectionExt {
290 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize>;
291 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point>;
292 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint>;
293 fn spanned_rows(&self, include_end_if_at_line_start: bool, map: &DisplaySnapshot)
294 -> Range<u32>;
295}
296
297#[derive(Clone, Debug)]
298pub enum SelectPhase {
299 Begin {
300 position: DisplayPoint,
301 add: bool,
302 click_count: usize,
303 },
304 BeginColumnar {
305 position: DisplayPoint,
306 overshoot: u32,
307 },
308 Extend {
309 position: DisplayPoint,
310 click_count: usize,
311 },
312 Update {
313 position: DisplayPoint,
314 overshoot: u32,
315 scroll_position: Vector2F,
316 },
317 End,
318}
319
320#[derive(Clone, Debug)]
321enum SelectMode {
322 Character,
323 Word(Range<Anchor>),
324 Line(Range<Anchor>),
325 All,
326}
327
328#[derive(PartialEq, Eq)]
329pub enum Autoscroll {
330 Fit,
331 Center,
332 Newest,
333}
334
335#[derive(Copy, Clone, PartialEq, Eq)]
336pub enum EditorMode {
337 SingleLine,
338 AutoHeight { max_lines: usize },
339 Full,
340}
341
342#[derive(Clone)]
343pub struct EditorSettings {
344 pub tab_size: usize,
345 pub soft_wrap: SoftWrap,
346 pub style: EditorStyle,
347}
348
349#[derive(Clone)]
350pub enum SoftWrap {
351 None,
352 EditorWidth,
353 Column(u32),
354}
355
356pub type BuildSettings = Arc<dyn 'static + Send + Sync + Fn(&AppContext) -> EditorSettings>;
357
358pub struct Editor {
359 handle: WeakViewHandle<Self>,
360 buffer: ModelHandle<MultiBuffer>,
361 display_map: ModelHandle<DisplayMap>,
362 next_selection_id: usize,
363 selections: Arc<[Selection<Anchor>]>,
364 pending_selection: Option<PendingSelection>,
365 columnar_selection_tail: Option<Anchor>,
366 add_selections_state: Option<AddSelectionsState>,
367 select_next_state: Option<SelectNextState>,
368 selection_history:
369 HashMap<TransactionId, (Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)>,
370 autoclose_stack: Vec<BracketPairState>,
371 select_larger_syntax_node_stack: Vec<Box<[Selection<usize>]>>,
372 active_diagnostics: Option<ActiveDiagnosticGroup>,
373 scroll_position: Vector2F,
374 scroll_top_anchor: Option<Anchor>,
375 autoscroll_request: Option<Autoscroll>,
376 build_settings: BuildSettings,
377 focused: bool,
378 show_local_cursors: bool,
379 blink_epoch: usize,
380 blinking_paused: bool,
381 mode: EditorMode,
382 placeholder_text: Option<Arc<str>>,
383 highlighted_rows: Option<Range<u32>>,
384 nav_history: Option<ItemNavHistory>,
385}
386
387pub struct EditorSnapshot {
388 pub mode: EditorMode,
389 pub display_snapshot: DisplaySnapshot,
390 pub placeholder_text: Option<Arc<str>>,
391 is_focused: bool,
392 scroll_position: Vector2F,
393 scroll_top_anchor: Option<Anchor>,
394}
395
396struct PendingSelection {
397 selection: Selection<Anchor>,
398 mode: SelectMode,
399}
400
401struct AddSelectionsState {
402 above: bool,
403 stack: Vec<usize>,
404}
405
406struct SelectNextState {
407 query: AhoCorasick,
408 wordwise: bool,
409 done: bool,
410}
411
412#[derive(Debug)]
413struct BracketPairState {
414 ranges: Vec<Range<Anchor>>,
415 pair: BracketPair,
416}
417
418#[derive(Debug)]
419struct ActiveDiagnosticGroup {
420 primary_range: Range<Anchor>,
421 primary_message: String,
422 blocks: HashMap<BlockId, Diagnostic>,
423 is_valid: bool,
424}
425
426#[derive(Serialize, Deserialize)]
427struct ClipboardSelection {
428 len: usize,
429 is_entire_line: bool,
430}
431
432pub struct NavigationData {
433 anchor: Anchor,
434 offset: usize,
435}
436
437impl Editor {
438 pub fn single_line(build_settings: BuildSettings, cx: &mut ViewContext<Self>) -> Self {
439 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
440 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
441 let mut view = Self::for_buffer(buffer, build_settings, cx);
442 view.mode = EditorMode::SingleLine;
443 view
444 }
445
446 pub fn auto_height(
447 max_lines: usize,
448 build_settings: BuildSettings,
449 cx: &mut ViewContext<Self>,
450 ) -> Self {
451 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
452 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
453 let mut view = Self::for_buffer(buffer, build_settings, cx);
454 view.mode = EditorMode::AutoHeight { max_lines };
455 view
456 }
457
458 pub fn for_buffer(
459 buffer: ModelHandle<MultiBuffer>,
460 build_settings: BuildSettings,
461 cx: &mut ViewContext<Self>,
462 ) -> Self {
463 Self::new(buffer, build_settings, cx)
464 }
465
466 pub fn clone(&self, cx: &mut ViewContext<Self>) -> Self {
467 let mut clone = Self::new(self.buffer.clone(), self.build_settings.clone(), cx);
468 clone.scroll_position = self.scroll_position;
469 clone.scroll_top_anchor = self.scroll_top_anchor.clone();
470 clone.nav_history = self
471 .nav_history
472 .as_ref()
473 .map(|nav_history| ItemNavHistory::new(nav_history.history(), &cx.handle()));
474 clone
475 }
476
477 pub fn new(
478 buffer: ModelHandle<MultiBuffer>,
479 build_settings: BuildSettings,
480 cx: &mut ViewContext<Self>,
481 ) -> Self {
482 let settings = build_settings(cx);
483 let display_map = cx.add_model(|cx| {
484 DisplayMap::new(
485 buffer.clone(),
486 settings.tab_size,
487 settings.style.text.font_id,
488 settings.style.text.font_size,
489 None,
490 cx,
491 )
492 });
493 cx.observe(&buffer, Self::on_buffer_changed).detach();
494 cx.subscribe(&buffer, Self::on_buffer_event).detach();
495 cx.observe(&display_map, Self::on_display_map_changed)
496 .detach();
497
498 let mut this = Self {
499 handle: cx.weak_handle(),
500 buffer,
501 display_map,
502 selections: Arc::from([]),
503 pending_selection: None,
504 columnar_selection_tail: None,
505 next_selection_id: 0,
506 add_selections_state: None,
507 select_next_state: None,
508 selection_history: Default::default(),
509 autoclose_stack: Default::default(),
510 select_larger_syntax_node_stack: Vec::new(),
511 active_diagnostics: None,
512 build_settings,
513 scroll_position: Vector2F::zero(),
514 scroll_top_anchor: None,
515 autoscroll_request: None,
516 focused: false,
517 show_local_cursors: false,
518 blink_epoch: 0,
519 blinking_paused: false,
520 mode: EditorMode::Full,
521 placeholder_text: None,
522 highlighted_rows: None,
523 nav_history: None,
524 };
525 let selection = Selection {
526 id: post_inc(&mut this.next_selection_id),
527 start: 0,
528 end: 0,
529 reversed: false,
530 goal: SelectionGoal::None,
531 };
532 this.update_selections(vec![selection], None, cx);
533 this
534 }
535
536 pub fn open_new(
537 workspace: &mut Workspace,
538 _: &workspace::OpenNew,
539 cx: &mut ViewContext<Workspace>,
540 ) {
541 let buffer = cx
542 .add_model(|cx| Buffer::new(0, "", cx).with_language(language::PLAIN_TEXT.clone(), cx));
543 workspace.open_item(BufferItemHandle(buffer), cx);
544 }
545
546 pub fn replica_id(&self, cx: &AppContext) -> ReplicaId {
547 self.buffer.read(cx).replica_id()
548 }
549
550 pub fn buffer(&self) -> &ModelHandle<MultiBuffer> {
551 &self.buffer
552 }
553
554 pub fn title(&self, cx: &AppContext) -> String {
555 let filename = self
556 .buffer()
557 .read(cx)
558 .file(cx)
559 .map(|file| file.file_name(cx));
560 if let Some(name) = filename {
561 name.to_string_lossy().into()
562 } else {
563 "untitled".into()
564 }
565 }
566
567 pub fn snapshot(&mut self, cx: &mut MutableAppContext) -> EditorSnapshot {
568 EditorSnapshot {
569 mode: self.mode,
570 display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
571 scroll_position: self.scroll_position,
572 scroll_top_anchor: self.scroll_top_anchor.clone(),
573 placeholder_text: self.placeholder_text.clone(),
574 is_focused: self
575 .handle
576 .upgrade(cx)
577 .map_or(false, |handle| handle.is_focused(cx)),
578 }
579 }
580
581 pub fn language<'a>(&self, cx: &'a AppContext) -> Option<&'a Arc<Language>> {
582 self.buffer.read(cx).language(cx)
583 }
584
585 pub fn set_placeholder_text(
586 &mut self,
587 placeholder_text: impl Into<Arc<str>>,
588 cx: &mut ViewContext<Self>,
589 ) {
590 self.placeholder_text = Some(placeholder_text.into());
591 cx.notify();
592 }
593
594 pub fn set_scroll_position(&mut self, scroll_position: Vector2F, cx: &mut ViewContext<Self>) {
595 let map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
596
597 if scroll_position.y() == 0. {
598 self.scroll_top_anchor = None;
599 self.scroll_position = scroll_position;
600 } else {
601 let scroll_top_buffer_offset =
602 DisplayPoint::new(scroll_position.y() as u32, 0).to_offset(&map, Bias::Right);
603 let anchor = map
604 .buffer_snapshot
605 .anchor_at(scroll_top_buffer_offset, Bias::Right);
606 self.scroll_position = vec2f(
607 scroll_position.x(),
608 scroll_position.y() - anchor.to_display_point(&map).row() as f32,
609 );
610 self.scroll_top_anchor = Some(anchor);
611 }
612
613 cx.notify();
614 }
615
616 pub fn scroll_position(&self, cx: &mut ViewContext<Self>) -> Vector2F {
617 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
618 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor)
619 }
620
621 pub fn clamp_scroll_left(&mut self, max: f32) -> bool {
622 if max < self.scroll_position.x() {
623 self.scroll_position.set_x(max);
624 true
625 } else {
626 false
627 }
628 }
629
630 pub fn autoscroll_vertically(
631 &mut self,
632 viewport_height: f32,
633 line_height: f32,
634 cx: &mut ViewContext<Self>,
635 ) -> bool {
636 let visible_lines = viewport_height / line_height;
637 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
638 let mut scroll_position =
639 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor);
640 let max_scroll_top = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
641 (display_map.max_point().row() as f32 - visible_lines + 1.).max(0.)
642 } else {
643 display_map.max_point().row().saturating_sub(1) as f32
644 };
645 if scroll_position.y() > max_scroll_top {
646 scroll_position.set_y(max_scroll_top);
647 self.set_scroll_position(scroll_position, cx);
648 }
649
650 let autoscroll = if let Some(autoscroll) = self.autoscroll_request.take() {
651 autoscroll
652 } else {
653 return false;
654 };
655
656 let first_cursor_top;
657 let last_cursor_bottom;
658 if let Some(highlighted_rows) = &self.highlighted_rows {
659 first_cursor_top = highlighted_rows.start as f32;
660 last_cursor_bottom = first_cursor_top + 1.;
661 } else if autoscroll == Autoscroll::Newest {
662 let newest_selection = self.newest_selection::<Point>(&display_map.buffer_snapshot);
663 first_cursor_top = newest_selection.head().to_display_point(&display_map).row() as f32;
664 last_cursor_bottom = first_cursor_top + 1.;
665 } else {
666 let selections = self.local_selections::<Point>(cx);
667 first_cursor_top = selections
668 .first()
669 .unwrap()
670 .head()
671 .to_display_point(&display_map)
672 .row() as f32;
673 last_cursor_bottom = selections
674 .last()
675 .unwrap()
676 .head()
677 .to_display_point(&display_map)
678 .row() as f32
679 + 1.0;
680 }
681
682 let margin = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
683 0.
684 } else {
685 ((visible_lines - (last_cursor_bottom - first_cursor_top)) / 2.0).floor()
686 };
687 if margin < 0.0 {
688 return false;
689 }
690
691 match autoscroll {
692 Autoscroll::Fit | Autoscroll::Newest => {
693 let margin = margin.min(3.0);
694 let target_top = (first_cursor_top - margin).max(0.0);
695 let target_bottom = last_cursor_bottom + margin;
696 let start_row = scroll_position.y();
697 let end_row = start_row + visible_lines;
698
699 if target_top < start_row {
700 scroll_position.set_y(target_top);
701 self.set_scroll_position(scroll_position, cx);
702 } else if target_bottom >= end_row {
703 scroll_position.set_y(target_bottom - visible_lines);
704 self.set_scroll_position(scroll_position, cx);
705 }
706 }
707 Autoscroll::Center => {
708 scroll_position.set_y((first_cursor_top - margin).max(0.0));
709 self.set_scroll_position(scroll_position, cx);
710 }
711 }
712
713 true
714 }
715
716 pub fn autoscroll_horizontally(
717 &mut self,
718 start_row: u32,
719 viewport_width: f32,
720 scroll_width: f32,
721 max_glyph_width: f32,
722 layouts: &[text_layout::Line],
723 cx: &mut ViewContext<Self>,
724 ) -> bool {
725 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
726 let selections = self.local_selections::<Point>(cx);
727
728 let mut target_left;
729 let mut target_right;
730
731 if self.highlighted_rows.is_some() {
732 target_left = 0.0_f32;
733 target_right = 0.0_f32;
734 } else {
735 target_left = std::f32::INFINITY;
736 target_right = 0.0_f32;
737 for selection in selections {
738 let head = selection.head().to_display_point(&display_map);
739 if head.row() >= start_row && head.row() < start_row + layouts.len() as u32 {
740 let start_column = head.column().saturating_sub(3);
741 let end_column = cmp::min(display_map.line_len(head.row()), head.column() + 3);
742 target_left = target_left.min(
743 layouts[(head.row() - start_row) as usize]
744 .x_for_index(start_column as usize),
745 );
746 target_right = target_right.max(
747 layouts[(head.row() - start_row) as usize].x_for_index(end_column as usize)
748 + max_glyph_width,
749 );
750 }
751 }
752 }
753
754 target_right = target_right.min(scroll_width);
755
756 if target_right - target_left > viewport_width {
757 return false;
758 }
759
760 let scroll_left = self.scroll_position.x() * max_glyph_width;
761 let scroll_right = scroll_left + viewport_width;
762
763 if target_left < scroll_left {
764 self.scroll_position.set_x(target_left / max_glyph_width);
765 true
766 } else if target_right > scroll_right {
767 self.scroll_position
768 .set_x((target_right - viewport_width) / max_glyph_width);
769 true
770 } else {
771 false
772 }
773 }
774
775 fn select(&mut self, Select(phase): &Select, cx: &mut ViewContext<Self>) {
776 match phase {
777 SelectPhase::Begin {
778 position,
779 add,
780 click_count,
781 } => self.begin_selection(*position, *add, *click_count, cx),
782 SelectPhase::BeginColumnar {
783 position,
784 overshoot,
785 } => self.begin_columnar_selection(*position, *overshoot, cx),
786 SelectPhase::Extend {
787 position,
788 click_count,
789 } => self.extend_selection(*position, *click_count, cx),
790 SelectPhase::Update {
791 position,
792 overshoot,
793 scroll_position,
794 } => self.update_selection(*position, *overshoot, *scroll_position, cx),
795 SelectPhase::End => self.end_selection(cx),
796 }
797 }
798
799 fn extend_selection(
800 &mut self,
801 position: DisplayPoint,
802 click_count: usize,
803 cx: &mut ViewContext<Self>,
804 ) {
805 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
806 let tail = self
807 .newest_selection::<usize>(&display_map.buffer_snapshot)
808 .tail();
809 self.begin_selection(position, false, click_count, cx);
810
811 let position = position.to_offset(&display_map, Bias::Left);
812 let tail_anchor = display_map.buffer_snapshot.anchor_before(tail);
813 let pending = self.pending_selection.as_mut().unwrap();
814
815 if position >= tail {
816 pending.selection.start = tail_anchor.clone();
817 } else {
818 pending.selection.end = tail_anchor.clone();
819 pending.selection.reversed = true;
820 }
821
822 match &mut pending.mode {
823 SelectMode::Word(range) | SelectMode::Line(range) => {
824 *range = tail_anchor.clone()..tail_anchor
825 }
826 _ => {}
827 }
828 }
829
830 fn begin_selection(
831 &mut self,
832 position: DisplayPoint,
833 add: bool,
834 click_count: usize,
835 cx: &mut ViewContext<Self>,
836 ) {
837 if !self.focused {
838 cx.focus_self();
839 cx.emit(Event::Activate);
840 }
841
842 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
843 let buffer = &display_map.buffer_snapshot;
844 let newest_selection = self.newest_selection_internal().unwrap().clone();
845
846 let start;
847 let end;
848 let mode;
849 match click_count {
850 1 => {
851 start = buffer.anchor_before(position.to_point(&display_map));
852 end = start.clone();
853 mode = SelectMode::Character;
854 }
855 2 => {
856 let range = movement::surrounding_word(&display_map, position);
857 start = buffer.anchor_before(range.start.to_point(&display_map));
858 end = buffer.anchor_before(range.end.to_point(&display_map));
859 mode = SelectMode::Word(start.clone()..end.clone());
860 }
861 3 => {
862 let position = display_map.clip_point(position, Bias::Left);
863 let line_start = movement::line_beginning(&display_map, position, false);
864 let mut next_line_start = line_start.clone();
865 *next_line_start.row_mut() += 1;
866 *next_line_start.column_mut() = 0;
867 next_line_start = display_map.clip_point(next_line_start, Bias::Right);
868
869 start = buffer.anchor_before(line_start.to_point(&display_map));
870 end = buffer.anchor_before(next_line_start.to_point(&display_map));
871 mode = SelectMode::Line(start.clone()..end.clone());
872 }
873 _ => {
874 start = buffer.anchor_before(0);
875 end = buffer.anchor_before(buffer.len());
876 mode = SelectMode::All;
877 }
878 }
879
880 self.push_to_nav_history(newest_selection.head(), Some(end.to_point(&buffer)), cx);
881
882 let selection = Selection {
883 id: post_inc(&mut self.next_selection_id),
884 start,
885 end,
886 reversed: false,
887 goal: SelectionGoal::None,
888 };
889
890 if !add {
891 self.update_selections::<usize>(Vec::new(), None, cx);
892 } else if click_count > 1 {
893 // Remove the newest selection since it was only added as part of this multi-click.
894 let mut selections = self.local_selections(cx);
895 selections.retain(|selection| selection.id != newest_selection.id);
896 self.update_selections::<usize>(selections, None, cx)
897 }
898
899 self.pending_selection = Some(PendingSelection { selection, mode });
900
901 cx.notify();
902 }
903
904 fn begin_columnar_selection(
905 &mut self,
906 position: DisplayPoint,
907 overshoot: u32,
908 cx: &mut ViewContext<Self>,
909 ) {
910 if !self.focused {
911 cx.focus_self();
912 cx.emit(Event::Activate);
913 }
914
915 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
916 let tail = self
917 .newest_selection::<Point>(&display_map.buffer_snapshot)
918 .tail();
919 self.columnar_selection_tail = Some(display_map.buffer_snapshot.anchor_before(tail));
920
921 self.select_columns(
922 tail.to_display_point(&display_map),
923 position,
924 overshoot,
925 &display_map,
926 cx,
927 );
928 }
929
930 fn update_selection(
931 &mut self,
932 position: DisplayPoint,
933 overshoot: u32,
934 scroll_position: Vector2F,
935 cx: &mut ViewContext<Self>,
936 ) {
937 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
938
939 if let Some(tail) = self.columnar_selection_tail.as_ref() {
940 let tail = tail.to_display_point(&display_map);
941 self.select_columns(tail, position, overshoot, &display_map, cx);
942 } else if let Some(PendingSelection { selection, mode }) = self.pending_selection.as_mut() {
943 let buffer = self.buffer.read(cx).snapshot(cx);
944 let head;
945 let tail;
946 match mode {
947 SelectMode::Character => {
948 head = position.to_point(&display_map);
949 tail = selection.tail().to_point(&buffer);
950 }
951 SelectMode::Word(original_range) => {
952 let original_display_range = original_range.start.to_display_point(&display_map)
953 ..original_range.end.to_display_point(&display_map);
954 let original_buffer_range = original_display_range.start.to_point(&display_map)
955 ..original_display_range.end.to_point(&display_map);
956 if movement::is_inside_word(&display_map, position)
957 || original_display_range.contains(&position)
958 {
959 let word_range = movement::surrounding_word(&display_map, position);
960 if word_range.start < original_display_range.start {
961 head = word_range.start.to_point(&display_map);
962 } else {
963 head = word_range.end.to_point(&display_map);
964 }
965 } else {
966 head = position.to_point(&display_map);
967 }
968
969 if head <= original_buffer_range.start {
970 tail = original_buffer_range.end;
971 } else {
972 tail = original_buffer_range.start;
973 }
974 }
975 SelectMode::Line(original_range) => {
976 let original_display_range = original_range.start.to_display_point(&display_map)
977 ..original_range.end.to_display_point(&display_map);
978 let original_buffer_range = original_display_range.start.to_point(&display_map)
979 ..original_display_range.end.to_point(&display_map);
980 let line_start = movement::line_beginning(&display_map, position, false);
981 let mut next_line_start = line_start.clone();
982 *next_line_start.row_mut() += 1;
983 *next_line_start.column_mut() = 0;
984 next_line_start = display_map.clip_point(next_line_start, Bias::Right);
985
986 if line_start < original_display_range.start {
987 head = line_start.to_point(&display_map);
988 } else {
989 head = next_line_start.to_point(&display_map);
990 }
991
992 if head <= original_buffer_range.start {
993 tail = original_buffer_range.end;
994 } else {
995 tail = original_buffer_range.start;
996 }
997 }
998 SelectMode::All => {
999 return;
1000 }
1001 };
1002
1003 if head < tail {
1004 selection.start = buffer.anchor_before(head);
1005 selection.end = buffer.anchor_before(tail);
1006 selection.reversed = true;
1007 } else {
1008 selection.start = buffer.anchor_before(tail);
1009 selection.end = buffer.anchor_before(head);
1010 selection.reversed = false;
1011 }
1012 } else {
1013 log::error!("update_selection dispatched with no pending selection");
1014 return;
1015 }
1016
1017 self.set_scroll_position(scroll_position, cx);
1018 cx.notify();
1019 }
1020
1021 fn end_selection(&mut self, cx: &mut ViewContext<Self>) {
1022 self.columnar_selection_tail.take();
1023 if self.pending_selection.is_some() {
1024 let selections = self.local_selections::<usize>(cx);
1025 self.update_selections(selections, None, cx);
1026 }
1027 }
1028
1029 fn select_columns(
1030 &mut self,
1031 tail: DisplayPoint,
1032 head: DisplayPoint,
1033 overshoot: u32,
1034 display_map: &DisplaySnapshot,
1035 cx: &mut ViewContext<Self>,
1036 ) {
1037 let start_row = cmp::min(tail.row(), head.row());
1038 let end_row = cmp::max(tail.row(), head.row());
1039 let start_column = cmp::min(tail.column(), head.column() + overshoot);
1040 let end_column = cmp::max(tail.column(), head.column() + overshoot);
1041 let reversed = start_column < tail.column();
1042
1043 let selections = (start_row..=end_row)
1044 .filter_map(|row| {
1045 if start_column <= display_map.line_len(row) && !display_map.is_block_line(row) {
1046 let start = display_map
1047 .clip_point(DisplayPoint::new(row, start_column), Bias::Left)
1048 .to_point(&display_map);
1049 let end = display_map
1050 .clip_point(DisplayPoint::new(row, end_column), Bias::Right)
1051 .to_point(&display_map);
1052 Some(Selection {
1053 id: post_inc(&mut self.next_selection_id),
1054 start,
1055 end,
1056 reversed,
1057 goal: SelectionGoal::None,
1058 })
1059 } else {
1060 None
1061 }
1062 })
1063 .collect::<Vec<_>>();
1064
1065 self.update_selections(selections, None, cx);
1066 cx.notify();
1067 }
1068
1069 pub fn is_selecting(&self) -> bool {
1070 self.pending_selection.is_some() || self.columnar_selection_tail.is_some()
1071 }
1072
1073 pub fn cancel(&mut self, _: &Cancel, cx: &mut ViewContext<Self>) {
1074 if self.active_diagnostics.is_some() {
1075 self.dismiss_diagnostics(cx);
1076 } else if let Some(PendingSelection { selection, .. }) = self.pending_selection.take() {
1077 let buffer = self.buffer.read(cx).snapshot(cx);
1078 let selection = Selection {
1079 id: selection.id,
1080 start: selection.start.to_point(&buffer),
1081 end: selection.end.to_point(&buffer),
1082 reversed: selection.reversed,
1083 goal: selection.goal,
1084 };
1085 if self.local_selections::<Point>(cx).is_empty() {
1086 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
1087 }
1088 } else {
1089 let buffer = self.buffer.read(cx).snapshot(cx);
1090 let mut oldest_selection = self.oldest_selection::<usize>(&buffer);
1091 if self.selection_count() == 1 {
1092 if oldest_selection.is_empty() {
1093 cx.propagate_action();
1094 return;
1095 }
1096
1097 oldest_selection.start = oldest_selection.head().clone();
1098 oldest_selection.end = oldest_selection.head().clone();
1099 }
1100 self.update_selections(vec![oldest_selection], Some(Autoscroll::Fit), cx);
1101 }
1102 }
1103
1104 #[cfg(any(test, feature = "test-support"))]
1105 pub fn selected_ranges<D: TextDimension + Ord + Sub<D, Output = D>>(
1106 &self,
1107 cx: &mut MutableAppContext,
1108 ) -> Vec<Range<D>> {
1109 self.local_selections::<D>(cx)
1110 .iter()
1111 .map(|s| {
1112 if s.reversed {
1113 s.end.clone()..s.start.clone()
1114 } else {
1115 s.start.clone()..s.end.clone()
1116 }
1117 })
1118 .collect()
1119 }
1120
1121 #[cfg(any(test, feature = "test-support"))]
1122 pub fn selected_display_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
1123 let display_map = self
1124 .display_map
1125 .update(cx, |display_map, cx| display_map.snapshot(cx));
1126 self.selections
1127 .iter()
1128 .chain(
1129 self.pending_selection
1130 .as_ref()
1131 .map(|pending| &pending.selection),
1132 )
1133 .map(|s| {
1134 if s.reversed {
1135 s.end.to_display_point(&display_map)..s.start.to_display_point(&display_map)
1136 } else {
1137 s.start.to_display_point(&display_map)..s.end.to_display_point(&display_map)
1138 }
1139 })
1140 .collect()
1141 }
1142
1143 pub fn select_ranges<I, T>(
1144 &mut self,
1145 ranges: I,
1146 autoscroll: Option<Autoscroll>,
1147 cx: &mut ViewContext<Self>,
1148 ) where
1149 I: IntoIterator<Item = Range<T>>,
1150 T: ToOffset,
1151 {
1152 let buffer = self.buffer.read(cx).snapshot(cx);
1153 let selections = ranges
1154 .into_iter()
1155 .map(|range| {
1156 let mut start = range.start.to_offset(&buffer);
1157 let mut end = range.end.to_offset(&buffer);
1158 let reversed = if start > end {
1159 mem::swap(&mut start, &mut end);
1160 true
1161 } else {
1162 false
1163 };
1164 Selection {
1165 id: post_inc(&mut self.next_selection_id),
1166 start,
1167 end,
1168 reversed,
1169 goal: SelectionGoal::None,
1170 }
1171 })
1172 .collect::<Vec<_>>();
1173 self.update_selections(selections, autoscroll, cx);
1174 }
1175
1176 #[cfg(any(test, feature = "test-support"))]
1177 pub fn select_display_ranges<'a, T>(&mut self, ranges: T, cx: &mut ViewContext<Self>)
1178 where
1179 T: IntoIterator<Item = &'a Range<DisplayPoint>>,
1180 {
1181 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1182 let selections = ranges
1183 .into_iter()
1184 .map(|range| {
1185 let mut start = range.start;
1186 let mut end = range.end;
1187 let reversed = if start > end {
1188 mem::swap(&mut start, &mut end);
1189 true
1190 } else {
1191 false
1192 };
1193 Selection {
1194 id: post_inc(&mut self.next_selection_id),
1195 start: start.to_point(&display_map),
1196 end: end.to_point(&display_map),
1197 reversed,
1198 goal: SelectionGoal::None,
1199 }
1200 })
1201 .collect();
1202 self.update_selections(selections, None, cx);
1203 }
1204
1205 pub fn handle_input(&mut self, action: &Input, cx: &mut ViewContext<Self>) {
1206 let text = action.0.as_ref();
1207 if !self.skip_autoclose_end(text, cx) {
1208 self.start_transaction(cx);
1209 self.insert(text, cx);
1210 self.autoclose_pairs(cx);
1211 self.end_transaction(cx);
1212 }
1213 }
1214
1215 pub fn newline(&mut self, _: &Newline, cx: &mut ViewContext<Self>) {
1216 self.start_transaction(cx);
1217 let mut old_selections = SmallVec::<[_; 32]>::new();
1218 {
1219 let selections = self.local_selections::<Point>(cx);
1220 let buffer = self.buffer.read(cx).snapshot(cx);
1221 for selection in selections.iter() {
1222 let start_point = selection.start;
1223 let indent = buffer
1224 .indent_column_for_line(start_point.row)
1225 .min(start_point.column);
1226 let start = selection.start.to_offset(&buffer);
1227 let end = selection.end.to_offset(&buffer);
1228
1229 let mut insert_extra_newline = false;
1230 if let Some(language) = buffer.language() {
1231 let leading_whitespace_len = buffer
1232 .reversed_chars_at(start)
1233 .take_while(|c| c.is_whitespace() && *c != '\n')
1234 .map(|c| c.len_utf8())
1235 .sum::<usize>();
1236
1237 let trailing_whitespace_len = buffer
1238 .chars_at(end)
1239 .take_while(|c| c.is_whitespace() && *c != '\n')
1240 .map(|c| c.len_utf8())
1241 .sum::<usize>();
1242
1243 insert_extra_newline = language.brackets().iter().any(|pair| {
1244 let pair_start = pair.start.trim_end();
1245 let pair_end = pair.end.trim_start();
1246
1247 pair.newline
1248 && buffer.contains_str_at(end + trailing_whitespace_len, pair_end)
1249 && buffer.contains_str_at(
1250 (start - leading_whitespace_len).saturating_sub(pair_start.len()),
1251 pair_start,
1252 )
1253 });
1254 }
1255
1256 old_selections.push((selection.id, start..end, indent, insert_extra_newline));
1257 }
1258 }
1259
1260 self.buffer.update(cx, |buffer, cx| {
1261 let mut delta = 0_isize;
1262 let mut pending_edit: Option<PendingEdit> = None;
1263 for (_, range, indent, insert_extra_newline) in &old_selections {
1264 if pending_edit.as_ref().map_or(false, |pending| {
1265 pending.indent != *indent
1266 || pending.insert_extra_newline != *insert_extra_newline
1267 }) {
1268 let pending = pending_edit.take().unwrap();
1269 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1270 new_text.push('\n');
1271 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1272 if pending.insert_extra_newline {
1273 new_text = new_text.repeat(2);
1274 }
1275 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1276 delta += pending.delta;
1277 }
1278
1279 let start = (range.start as isize + delta) as usize;
1280 let end = (range.end as isize + delta) as usize;
1281 let mut text_len = *indent as usize + 1;
1282 if *insert_extra_newline {
1283 text_len *= 2;
1284 }
1285
1286 let pending = pending_edit.get_or_insert_with(Default::default);
1287 pending.delta += text_len as isize - (end - start) as isize;
1288 pending.indent = *indent;
1289 pending.insert_extra_newline = *insert_extra_newline;
1290 pending.ranges.push(start..end);
1291 }
1292
1293 let pending = pending_edit.unwrap();
1294 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1295 new_text.push('\n');
1296 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1297 if pending.insert_extra_newline {
1298 new_text = new_text.repeat(2);
1299 }
1300 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1301
1302 let buffer = buffer.read(cx);
1303 self.selections = self
1304 .selections
1305 .iter()
1306 .cloned()
1307 .zip(old_selections)
1308 .map(|(mut new_selection, (_, _, _, insert_extra_newline))| {
1309 if insert_extra_newline {
1310 let mut cursor = new_selection.start.to_point(&buffer);
1311 cursor.row -= 1;
1312 cursor.column = buffer.line_len(cursor.row);
1313 let anchor = buffer.anchor_after(cursor);
1314 new_selection.start = anchor.clone();
1315 new_selection.end = anchor;
1316 }
1317 new_selection
1318 })
1319 .collect();
1320 });
1321
1322 self.request_autoscroll(Autoscroll::Fit, cx);
1323 self.end_transaction(cx);
1324
1325 #[derive(Default)]
1326 struct PendingEdit {
1327 indent: u32,
1328 insert_extra_newline: bool,
1329 delta: isize,
1330 ranges: SmallVec<[Range<usize>; 32]>,
1331 }
1332 }
1333
1334 pub fn insert(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1335 self.start_transaction(cx);
1336 let old_selections = self.local_selections::<usize>(cx);
1337 self.buffer.update(cx, |buffer, cx| {
1338 let edit_ranges = old_selections.iter().map(|s| s.start..s.end);
1339 buffer.edit_with_autoindent(edit_ranges, text, cx);
1340 });
1341
1342 let selections = self.local_selections::<usize>(cx);
1343 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1344 self.end_transaction(cx);
1345 }
1346
1347 fn autoclose_pairs(&mut self, cx: &mut ViewContext<Self>) {
1348 let selections = self.local_selections::<usize>(cx);
1349 let mut bracket_pair_state = None;
1350 let mut new_selections = None;
1351 self.buffer.update(cx, |buffer, cx| {
1352 let mut snapshot = buffer.snapshot(cx);
1353 let left_biased_selections = selections
1354 .iter()
1355 .map(|selection| Selection {
1356 id: selection.id,
1357 start: snapshot.anchor_before(selection.start),
1358 end: snapshot.anchor_before(selection.end),
1359 reversed: selection.reversed,
1360 goal: selection.goal,
1361 })
1362 .collect::<Vec<_>>();
1363
1364 let autoclose_pair = snapshot.language().and_then(|language| {
1365 let first_selection_start = selections.first().unwrap().start;
1366 let pair = language.brackets().iter().find(|pair| {
1367 snapshot.contains_str_at(
1368 first_selection_start.saturating_sub(pair.start.len()),
1369 &pair.start,
1370 )
1371 });
1372 pair.and_then(|pair| {
1373 let should_autoclose = selections[1..].iter().all(|selection| {
1374 snapshot.contains_str_at(
1375 selection.start.saturating_sub(pair.start.len()),
1376 &pair.start,
1377 )
1378 });
1379
1380 if should_autoclose {
1381 Some(pair.clone())
1382 } else {
1383 None
1384 }
1385 })
1386 });
1387
1388 if let Some(pair) = autoclose_pair {
1389 let selection_ranges = selections
1390 .iter()
1391 .map(|selection| {
1392 let start = selection.start.to_offset(&snapshot);
1393 start..start
1394 })
1395 .collect::<SmallVec<[_; 32]>>();
1396
1397 buffer.edit(selection_ranges, &pair.end, cx);
1398 snapshot = buffer.snapshot(cx);
1399
1400 new_selections = Some(
1401 self.resolve_selections::<usize, _>(left_biased_selections.iter(), &snapshot)
1402 .collect::<Vec<_>>(),
1403 );
1404
1405 if pair.end.len() == 1 {
1406 let mut delta = 0;
1407 bracket_pair_state = Some(BracketPairState {
1408 ranges: selections
1409 .iter()
1410 .map(move |selection| {
1411 let offset = selection.start + delta;
1412 delta += 1;
1413 snapshot.anchor_before(offset)..snapshot.anchor_after(offset)
1414 })
1415 .collect(),
1416 pair,
1417 });
1418 }
1419 }
1420 });
1421
1422 if let Some(new_selections) = new_selections {
1423 self.update_selections(new_selections, None, cx);
1424 }
1425 if let Some(bracket_pair_state) = bracket_pair_state {
1426 self.autoclose_stack.push(bracket_pair_state);
1427 }
1428 }
1429
1430 fn skip_autoclose_end(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
1431 let old_selections = self.local_selections::<usize>(cx);
1432 let autoclose_pair = if let Some(autoclose_pair) = self.autoclose_stack.last() {
1433 autoclose_pair
1434 } else {
1435 return false;
1436 };
1437 if text != autoclose_pair.pair.end {
1438 return false;
1439 }
1440
1441 debug_assert_eq!(old_selections.len(), autoclose_pair.ranges.len());
1442
1443 let buffer = self.buffer.read(cx).snapshot(cx);
1444 if old_selections
1445 .iter()
1446 .zip(autoclose_pair.ranges.iter().map(|r| r.to_offset(&buffer)))
1447 .all(|(selection, autoclose_range)| {
1448 let autoclose_range_end = autoclose_range.end.to_offset(&buffer);
1449 selection.is_empty() && selection.start == autoclose_range_end
1450 })
1451 {
1452 let new_selections = old_selections
1453 .into_iter()
1454 .map(|selection| {
1455 let cursor = selection.start + 1;
1456 Selection {
1457 id: selection.id,
1458 start: cursor,
1459 end: cursor,
1460 reversed: false,
1461 goal: SelectionGoal::None,
1462 }
1463 })
1464 .collect();
1465 self.autoclose_stack.pop();
1466 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1467 true
1468 } else {
1469 false
1470 }
1471 }
1472
1473 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
1474 self.start_transaction(cx);
1475 self.select_all(&SelectAll, cx);
1476 self.insert("", cx);
1477 self.end_transaction(cx);
1478 }
1479
1480 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
1481 self.start_transaction(cx);
1482 let mut selections = self.local_selections::<Point>(cx);
1483 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1484 for selection in &mut selections {
1485 if selection.is_empty() {
1486 let head = selection.head().to_display_point(&display_map);
1487 let cursor = movement::left(&display_map, head)
1488 .unwrap()
1489 .to_point(&display_map);
1490 selection.set_head(cursor);
1491 selection.goal = SelectionGoal::None;
1492 }
1493 }
1494 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1495 self.insert("", cx);
1496 self.end_transaction(cx);
1497 }
1498
1499 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
1500 self.start_transaction(cx);
1501 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1502 let mut selections = self.local_selections::<Point>(cx);
1503 for selection in &mut selections {
1504 if selection.is_empty() {
1505 let head = selection.head().to_display_point(&display_map);
1506 let cursor = movement::right(&display_map, head)
1507 .unwrap()
1508 .to_point(&display_map);
1509 selection.set_head(cursor);
1510 selection.goal = SelectionGoal::None;
1511 }
1512 }
1513 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1514 self.insert(&"", cx);
1515 self.end_transaction(cx);
1516 }
1517
1518 pub fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
1519 self.start_transaction(cx);
1520 let tab_size = (self.build_settings)(cx).tab_size;
1521 let mut selections = self.local_selections::<Point>(cx);
1522 let mut last_indent = None;
1523 self.buffer.update(cx, |buffer, cx| {
1524 for selection in &mut selections {
1525 if selection.is_empty() {
1526 let char_column = buffer
1527 .read(cx)
1528 .text_for_range(Point::new(selection.start.row, 0)..selection.start)
1529 .flat_map(str::chars)
1530 .count();
1531 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
1532 buffer.edit(
1533 [selection.start..selection.start],
1534 " ".repeat(chars_to_next_tab_stop),
1535 cx,
1536 );
1537 selection.start.column += chars_to_next_tab_stop as u32;
1538 selection.end = selection.start;
1539 } else {
1540 let mut start_row = selection.start.row;
1541 let mut end_row = selection.end.row + 1;
1542
1543 // If a selection ends at the beginning of a line, don't indent
1544 // that last line.
1545 if selection.end.column == 0 {
1546 end_row -= 1;
1547 }
1548
1549 // Avoid re-indenting a row that has already been indented by a
1550 // previous selection, but still update this selection's column
1551 // to reflect that indentation.
1552 if let Some((last_indent_row, last_indent_len)) = last_indent {
1553 if last_indent_row == selection.start.row {
1554 selection.start.column += last_indent_len;
1555 start_row += 1;
1556 }
1557 if last_indent_row == selection.end.row {
1558 selection.end.column += last_indent_len;
1559 }
1560 }
1561
1562 for row in start_row..end_row {
1563 let indent_column = buffer.read(cx).indent_column_for_line(row) as usize;
1564 let columns_to_next_tab_stop = tab_size - (indent_column % tab_size);
1565 let row_start = Point::new(row, 0);
1566 buffer.edit(
1567 [row_start..row_start],
1568 " ".repeat(columns_to_next_tab_stop),
1569 cx,
1570 );
1571
1572 // Update this selection's endpoints to reflect the indentation.
1573 if row == selection.start.row {
1574 selection.start.column += columns_to_next_tab_stop as u32;
1575 }
1576 if row == selection.end.row {
1577 selection.end.column += columns_to_next_tab_stop as u32;
1578 }
1579
1580 last_indent = Some((row, columns_to_next_tab_stop as u32));
1581 }
1582 }
1583 }
1584 });
1585
1586 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1587 self.end_transaction(cx);
1588 }
1589
1590 pub fn outdent(&mut self, _: &Outdent, cx: &mut ViewContext<Self>) {
1591 self.start_transaction(cx);
1592 let tab_size = (self.build_settings)(cx).tab_size;
1593 let selections = self.local_selections::<Point>(cx);
1594 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1595 let mut deletion_ranges = Vec::new();
1596 let mut last_outdent = None;
1597 {
1598 let buffer = self.buffer.read(cx).read(cx);
1599 for selection in &selections {
1600 let mut rows = selection.spanned_rows(false, &display_map);
1601
1602 // Avoid re-outdenting a row that has already been outdented by a
1603 // previous selection.
1604 if let Some(last_row) = last_outdent {
1605 if last_row == rows.start {
1606 rows.start += 1;
1607 }
1608 }
1609
1610 for row in rows {
1611 let column = buffer.indent_column_for_line(row) as usize;
1612 if column > 0 {
1613 let mut deletion_len = (column % tab_size) as u32;
1614 if deletion_len == 0 {
1615 deletion_len = tab_size as u32;
1616 }
1617 deletion_ranges.push(Point::new(row, 0)..Point::new(row, deletion_len));
1618 last_outdent = Some(row);
1619 }
1620 }
1621 }
1622 }
1623 self.buffer.update(cx, |buffer, cx| {
1624 buffer.edit(deletion_ranges, "", cx);
1625 });
1626
1627 self.update_selections(
1628 self.local_selections::<usize>(cx),
1629 Some(Autoscroll::Fit),
1630 cx,
1631 );
1632 self.end_transaction(cx);
1633 }
1634
1635 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
1636 self.start_transaction(cx);
1637
1638 let selections = self.local_selections::<Point>(cx);
1639 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1640 let buffer = self.buffer.read(cx).snapshot(cx);
1641
1642 let mut new_cursors = Vec::new();
1643 let mut edit_ranges = Vec::new();
1644 let mut selections = selections.iter().peekable();
1645 while let Some(selection) = selections.next() {
1646 let mut rows = selection.spanned_rows(false, &display_map);
1647 let goal_display_column = selection.head().to_display_point(&display_map).column();
1648
1649 // Accumulate contiguous regions of rows that we want to delete.
1650 while let Some(next_selection) = selections.peek() {
1651 let next_rows = next_selection.spanned_rows(false, &display_map);
1652 if next_rows.start <= rows.end {
1653 rows.end = next_rows.end;
1654 selections.next().unwrap();
1655 } else {
1656 break;
1657 }
1658 }
1659
1660 let mut edit_start = Point::new(rows.start, 0).to_offset(&buffer);
1661 let edit_end;
1662 let cursor_buffer_row;
1663 if buffer.max_point().row >= rows.end {
1664 // If there's a line after the range, delete the \n from the end of the row range
1665 // and position the cursor on the next line.
1666 edit_end = Point::new(rows.end, 0).to_offset(&buffer);
1667 cursor_buffer_row = rows.end;
1668 } else {
1669 // If there isn't a line after the range, delete the \n from the line before the
1670 // start of the row range and position the cursor there.
1671 edit_start = edit_start.saturating_sub(1);
1672 edit_end = buffer.len();
1673 cursor_buffer_row = rows.start.saturating_sub(1);
1674 }
1675
1676 let mut cursor = Point::new(cursor_buffer_row, 0).to_display_point(&display_map);
1677 *cursor.column_mut() =
1678 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
1679
1680 new_cursors.push((
1681 selection.id,
1682 buffer.anchor_after(cursor.to_point(&display_map)),
1683 ));
1684 edit_ranges.push(edit_start..edit_end);
1685 }
1686
1687 let buffer = self.buffer.update(cx, |buffer, cx| {
1688 buffer.edit(edit_ranges, "", cx);
1689 buffer.snapshot(cx)
1690 });
1691 let new_selections = new_cursors
1692 .into_iter()
1693 .map(|(id, cursor)| {
1694 let cursor = cursor.to_point(&buffer);
1695 Selection {
1696 id,
1697 start: cursor,
1698 end: cursor,
1699 reversed: false,
1700 goal: SelectionGoal::None,
1701 }
1702 })
1703 .collect();
1704 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1705 self.end_transaction(cx);
1706 }
1707
1708 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
1709 self.start_transaction(cx);
1710
1711 let selections = self.local_selections::<Point>(cx);
1712 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1713 let buffer = &display_map.buffer_snapshot;
1714
1715 let mut edits = Vec::new();
1716 let mut selections_iter = selections.iter().peekable();
1717 while let Some(selection) = selections_iter.next() {
1718 // Avoid duplicating the same lines twice.
1719 let mut rows = selection.spanned_rows(false, &display_map);
1720
1721 while let Some(next_selection) = selections_iter.peek() {
1722 let next_rows = next_selection.spanned_rows(false, &display_map);
1723 if next_rows.start <= rows.end - 1 {
1724 rows.end = next_rows.end;
1725 selections_iter.next().unwrap();
1726 } else {
1727 break;
1728 }
1729 }
1730
1731 // Copy the text from the selected row region and splice it at the start of the region.
1732 let start = Point::new(rows.start, 0);
1733 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
1734 let text = buffer
1735 .text_for_range(start..end)
1736 .chain(Some("\n"))
1737 .collect::<String>();
1738 edits.push((start, text, rows.len() as u32));
1739 }
1740
1741 self.buffer.update(cx, |buffer, cx| {
1742 for (point, text, _) in edits.into_iter().rev() {
1743 buffer.edit(Some(point..point), text, cx);
1744 }
1745 });
1746
1747 self.request_autoscroll(Autoscroll::Fit, cx);
1748 self.end_transaction(cx);
1749 }
1750
1751 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
1752 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1753 let buffer = self.buffer.read(cx).snapshot(cx);
1754
1755 let mut edits = Vec::new();
1756 let mut unfold_ranges = Vec::new();
1757 let mut refold_ranges = Vec::new();
1758
1759 let selections = self.local_selections::<Point>(cx);
1760 let mut selections = selections.iter().peekable();
1761 let mut contiguous_row_selections = Vec::new();
1762 let mut new_selections = Vec::new();
1763
1764 while let Some(selection) = selections.next() {
1765 // Find all the selections that span a contiguous row range
1766 contiguous_row_selections.push(selection.clone());
1767 let start_row = selection.start.row;
1768 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
1769 display_map.next_line_boundary(selection.end).0.row + 1
1770 } else {
1771 selection.end.row
1772 };
1773
1774 while let Some(next_selection) = selections.peek() {
1775 if next_selection.start.row <= end_row {
1776 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
1777 display_map.next_line_boundary(next_selection.end).0.row + 1
1778 } else {
1779 next_selection.end.row
1780 };
1781 contiguous_row_selections.push(selections.next().unwrap().clone());
1782 } else {
1783 break;
1784 }
1785 }
1786
1787 // Move the text spanned by the row range to be before the line preceding the row range
1788 if start_row > 0 {
1789 let range_to_move = Point::new(start_row - 1, buffer.line_len(start_row - 1))
1790 ..Point::new(end_row - 1, buffer.line_len(end_row - 1));
1791 let insertion_point = display_map
1792 .prev_line_boundary(Point::new(start_row - 1, 0))
1793 .0;
1794
1795 // Don't move lines across excerpts
1796 if !buffer.range_contains_excerpt_boundary(insertion_point..range_to_move.end) {
1797 let text = buffer
1798 .text_for_range(range_to_move.clone())
1799 .flat_map(|s| s.chars())
1800 .skip(1)
1801 .chain(['\n'])
1802 .collect::<String>();
1803
1804 edits.push((
1805 buffer.anchor_after(range_to_move.start)
1806 ..buffer.anchor_before(range_to_move.end),
1807 String::new(),
1808 ));
1809 let insertion_anchor = buffer.anchor_after(insertion_point);
1810 edits.push((insertion_anchor.clone()..insertion_anchor, text));
1811
1812 let row_delta = range_to_move.start.row - insertion_point.row + 1;
1813
1814 // Move selections up
1815 new_selections.extend(contiguous_row_selections.drain(..).map(
1816 |mut selection| {
1817 selection.start.row -= row_delta;
1818 selection.end.row -= row_delta;
1819 selection
1820 },
1821 ));
1822
1823 // Move folds up
1824 unfold_ranges.push(range_to_move.clone());
1825 for fold in display_map.folds_in_range(
1826 buffer.anchor_before(range_to_move.start)
1827 ..buffer.anchor_after(range_to_move.end),
1828 ) {
1829 let mut start = fold.start.to_point(&buffer);
1830 let mut end = fold.end.to_point(&buffer);
1831 start.row -= row_delta;
1832 end.row -= row_delta;
1833 refold_ranges.push(start..end);
1834 }
1835 }
1836 }
1837
1838 // If we didn't move line(s), preserve the existing selections
1839 new_selections.extend(contiguous_row_selections.drain(..));
1840 }
1841
1842 self.start_transaction(cx);
1843 self.unfold_ranges(unfold_ranges, cx);
1844 self.buffer.update(cx, |buffer, cx| {
1845 for (range, text) in edits {
1846 buffer.edit([range], text, cx);
1847 }
1848 });
1849 self.fold_ranges(refold_ranges, cx);
1850 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1851 self.end_transaction(cx);
1852 }
1853
1854 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
1855 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1856 let buffer = self.buffer.read(cx).snapshot(cx);
1857
1858 let mut edits = Vec::new();
1859 let mut unfold_ranges = Vec::new();
1860 let mut refold_ranges = Vec::new();
1861
1862 let selections = self.local_selections::<Point>(cx);
1863 let mut selections = selections.iter().peekable();
1864 let mut contiguous_row_selections = Vec::new();
1865 let mut new_selections = Vec::new();
1866
1867 while let Some(selection) = selections.next() {
1868 // Find all the selections that span a contiguous row range
1869 contiguous_row_selections.push(selection.clone());
1870 let start_row = selection.start.row;
1871 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
1872 display_map.next_line_boundary(selection.end).0.row + 1
1873 } else {
1874 selection.end.row
1875 };
1876
1877 while let Some(next_selection) = selections.peek() {
1878 if next_selection.start.row <= end_row {
1879 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
1880 display_map.next_line_boundary(next_selection.end).0.row + 1
1881 } else {
1882 next_selection.end.row
1883 };
1884 contiguous_row_selections.push(selections.next().unwrap().clone());
1885 } else {
1886 break;
1887 }
1888 }
1889
1890 // Move the text spanned by the row range to be after the last line of the row range
1891 if end_row <= buffer.max_point().row {
1892 let range_to_move = Point::new(start_row, 0)..Point::new(end_row, 0);
1893 let insertion_point = display_map.next_line_boundary(Point::new(end_row, 0)).0;
1894
1895 // Don't move lines across excerpt boundaries
1896 if !buffer.range_contains_excerpt_boundary(range_to_move.start..insertion_point) {
1897 let mut text = String::from("\n");
1898 text.extend(buffer.text_for_range(range_to_move.clone()));
1899 text.pop(); // Drop trailing newline
1900 edits.push((
1901 buffer.anchor_after(range_to_move.start)
1902 ..buffer.anchor_before(range_to_move.end),
1903 String::new(),
1904 ));
1905 let insertion_anchor = buffer.anchor_after(insertion_point);
1906 edits.push((insertion_anchor.clone()..insertion_anchor, text));
1907
1908 let row_delta = insertion_point.row - range_to_move.end.row + 1;
1909
1910 // Move selections down
1911 new_selections.extend(contiguous_row_selections.drain(..).map(
1912 |mut selection| {
1913 selection.start.row += row_delta;
1914 selection.end.row += row_delta;
1915 selection
1916 },
1917 ));
1918
1919 // Move folds down
1920 unfold_ranges.push(range_to_move.clone());
1921 for fold in display_map.folds_in_range(
1922 buffer.anchor_before(range_to_move.start)
1923 ..buffer.anchor_after(range_to_move.end),
1924 ) {
1925 let mut start = fold.start.to_point(&buffer);
1926 let mut end = fold.end.to_point(&buffer);
1927 start.row += row_delta;
1928 end.row += row_delta;
1929 refold_ranges.push(start..end);
1930 }
1931 }
1932 }
1933
1934 // If we didn't move line(s), preserve the existing selections
1935 new_selections.extend(contiguous_row_selections.drain(..));
1936 }
1937
1938 self.start_transaction(cx);
1939 self.unfold_ranges(unfold_ranges, cx);
1940 self.buffer.update(cx, |buffer, cx| {
1941 for (range, text) in edits {
1942 buffer.edit([range], text, cx);
1943 }
1944 });
1945 self.fold_ranges(refold_ranges, cx);
1946 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1947 self.end_transaction(cx);
1948 }
1949
1950 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
1951 self.start_transaction(cx);
1952 let mut text = String::new();
1953 let mut selections = self.local_selections::<Point>(cx);
1954 let mut clipboard_selections = Vec::with_capacity(selections.len());
1955 {
1956 let buffer = self.buffer.read(cx).read(cx);
1957 let max_point = buffer.max_point();
1958 for selection in &mut selections {
1959 let is_entire_line = selection.is_empty();
1960 if is_entire_line {
1961 selection.start = Point::new(selection.start.row, 0);
1962 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
1963 }
1964 let mut len = 0;
1965 for chunk in buffer.text_for_range(selection.start..selection.end) {
1966 text.push_str(chunk);
1967 len += chunk.len();
1968 }
1969 clipboard_selections.push(ClipboardSelection {
1970 len,
1971 is_entire_line,
1972 });
1973 }
1974 }
1975 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1976 self.insert("", cx);
1977 self.end_transaction(cx);
1978
1979 cx.as_mut()
1980 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
1981 }
1982
1983 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
1984 let selections = self.local_selections::<Point>(cx);
1985 let mut text = String::new();
1986 let mut clipboard_selections = Vec::with_capacity(selections.len());
1987 {
1988 let buffer = self.buffer.read(cx).read(cx);
1989 let max_point = buffer.max_point();
1990 for selection in selections.iter() {
1991 let mut start = selection.start;
1992 let mut end = selection.end;
1993 let is_entire_line = selection.is_empty();
1994 if is_entire_line {
1995 start = Point::new(start.row, 0);
1996 end = cmp::min(max_point, Point::new(start.row + 1, 0));
1997 }
1998 let mut len = 0;
1999 for chunk in buffer.text_for_range(start..end) {
2000 text.push_str(chunk);
2001 len += chunk.len();
2002 }
2003 clipboard_selections.push(ClipboardSelection {
2004 len,
2005 is_entire_line,
2006 });
2007 }
2008 }
2009
2010 cx.as_mut()
2011 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
2012 }
2013
2014 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
2015 if let Some(item) = cx.as_mut().read_from_clipboard() {
2016 let clipboard_text = item.text();
2017 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
2018 let mut selections = self.local_selections::<usize>(cx);
2019 let all_selections_were_entire_line =
2020 clipboard_selections.iter().all(|s| s.is_entire_line);
2021 if clipboard_selections.len() != selections.len() {
2022 clipboard_selections.clear();
2023 }
2024
2025 let mut delta = 0_isize;
2026 let mut start_offset = 0;
2027 for (i, selection) in selections.iter_mut().enumerate() {
2028 let to_insert;
2029 let entire_line;
2030 if let Some(clipboard_selection) = clipboard_selections.get(i) {
2031 let end_offset = start_offset + clipboard_selection.len;
2032 to_insert = &clipboard_text[start_offset..end_offset];
2033 entire_line = clipboard_selection.is_entire_line;
2034 start_offset = end_offset
2035 } else {
2036 to_insert = clipboard_text.as_str();
2037 entire_line = all_selections_were_entire_line;
2038 }
2039
2040 selection.start = (selection.start as isize + delta) as usize;
2041 selection.end = (selection.end as isize + delta) as usize;
2042
2043 self.buffer.update(cx, |buffer, cx| {
2044 // If the corresponding selection was empty when this slice of the
2045 // clipboard text was written, then the entire line containing the
2046 // selection was copied. If this selection is also currently empty,
2047 // then paste the line before the current line of the buffer.
2048 let range = if selection.is_empty() && entire_line {
2049 let column = selection.start.to_point(&buffer.read(cx)).column as usize;
2050 let line_start = selection.start - column;
2051 line_start..line_start
2052 } else {
2053 selection.start..selection.end
2054 };
2055
2056 delta += to_insert.len() as isize - range.len() as isize;
2057 buffer.edit([range], to_insert, cx);
2058 selection.start += to_insert.len();
2059 selection.end = selection.start;
2060 });
2061 }
2062 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2063 } else {
2064 self.insert(clipboard_text, cx);
2065 }
2066 }
2067 }
2068
2069 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
2070 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
2071 if let Some((selections, _)) = self.selection_history.get(&tx_id).cloned() {
2072 self.set_selections(selections, cx);
2073 }
2074 self.request_autoscroll(Autoscroll::Fit, cx);
2075 }
2076 }
2077
2078 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
2079 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
2080 if let Some((_, Some(selections))) = self.selection_history.get(&tx_id).cloned() {
2081 self.set_selections(selections, cx);
2082 }
2083 self.request_autoscroll(Autoscroll::Fit, cx);
2084 }
2085 }
2086
2087 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
2088 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2089 let mut selections = self.local_selections::<Point>(cx);
2090 for selection in &mut selections {
2091 let start = selection.start.to_display_point(&display_map);
2092 let end = selection.end.to_display_point(&display_map);
2093
2094 if start != end {
2095 selection.end = selection.start.clone();
2096 } else {
2097 let cursor = movement::left(&display_map, start)
2098 .unwrap()
2099 .to_point(&display_map);
2100 selection.start = cursor.clone();
2101 selection.end = cursor;
2102 }
2103 selection.reversed = false;
2104 selection.goal = SelectionGoal::None;
2105 }
2106 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2107 }
2108
2109 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
2110 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2111 let mut selections = self.local_selections::<Point>(cx);
2112 for selection in &mut selections {
2113 let head = selection.head().to_display_point(&display_map);
2114 let cursor = movement::left(&display_map, head)
2115 .unwrap()
2116 .to_point(&display_map);
2117 selection.set_head(cursor);
2118 selection.goal = SelectionGoal::None;
2119 }
2120 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2121 }
2122
2123 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
2124 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2125 let mut selections = self.local_selections::<Point>(cx);
2126 for selection in &mut selections {
2127 let start = selection.start.to_display_point(&display_map);
2128 let end = selection.end.to_display_point(&display_map);
2129
2130 if start != end {
2131 selection.start = selection.end.clone();
2132 } else {
2133 let cursor = movement::right(&display_map, end)
2134 .unwrap()
2135 .to_point(&display_map);
2136 selection.start = cursor;
2137 selection.end = cursor;
2138 }
2139 selection.reversed = false;
2140 selection.goal = SelectionGoal::None;
2141 }
2142 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2143 }
2144
2145 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
2146 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2147 let mut selections = self.local_selections::<Point>(cx);
2148 for selection in &mut selections {
2149 let head = selection.head().to_display_point(&display_map);
2150 let cursor = movement::right(&display_map, head)
2151 .unwrap()
2152 .to_point(&display_map);
2153 selection.set_head(cursor);
2154 selection.goal = SelectionGoal::None;
2155 }
2156 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2157 }
2158
2159 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
2160 if matches!(self.mode, EditorMode::SingleLine) {
2161 cx.propagate_action();
2162 return;
2163 }
2164
2165 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2166 let mut selections = self.local_selections::<Point>(cx);
2167 for selection in &mut selections {
2168 let start = selection.start.to_display_point(&display_map);
2169 let end = selection.end.to_display_point(&display_map);
2170 if start != end {
2171 selection.goal = SelectionGoal::None;
2172 }
2173
2174 let (start, goal) = movement::up(&display_map, start, selection.goal).unwrap();
2175 let cursor = start.to_point(&display_map);
2176 selection.start = cursor;
2177 selection.end = cursor;
2178 selection.goal = goal;
2179 selection.reversed = false;
2180 }
2181 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2182 }
2183
2184 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
2185 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2186 let mut selections = self.local_selections::<Point>(cx);
2187 for selection in &mut selections {
2188 let head = selection.head().to_display_point(&display_map);
2189 let (head, goal) = movement::up(&display_map, head, selection.goal).unwrap();
2190 let cursor = head.to_point(&display_map);
2191 selection.set_head(cursor);
2192 selection.goal = goal;
2193 }
2194 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2195 }
2196
2197 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
2198 if matches!(self.mode, EditorMode::SingleLine) {
2199 cx.propagate_action();
2200 return;
2201 }
2202
2203 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2204 let mut selections = self.local_selections::<Point>(cx);
2205 for selection in &mut selections {
2206 let start = selection.start.to_display_point(&display_map);
2207 let end = selection.end.to_display_point(&display_map);
2208 if start != end {
2209 selection.goal = SelectionGoal::None;
2210 }
2211
2212 let (start, goal) = movement::down(&display_map, end, selection.goal).unwrap();
2213 let cursor = start.to_point(&display_map);
2214 selection.start = cursor;
2215 selection.end = cursor;
2216 selection.goal = goal;
2217 selection.reversed = false;
2218 }
2219 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2220 }
2221
2222 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
2223 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2224 let mut selections = self.local_selections::<Point>(cx);
2225 for selection in &mut selections {
2226 let head = selection.head().to_display_point(&display_map);
2227 let (head, goal) = movement::down(&display_map, head, selection.goal).unwrap();
2228 let cursor = head.to_point(&display_map);
2229 selection.set_head(cursor);
2230 selection.goal = goal;
2231 }
2232 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2233 }
2234
2235 pub fn move_to_previous_word_boundary(
2236 &mut self,
2237 _: &MoveToPreviousWordBoundary,
2238 cx: &mut ViewContext<Self>,
2239 ) {
2240 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2241 let mut selections = self.local_selections::<Point>(cx);
2242 for selection in &mut selections {
2243 let head = selection.head().to_display_point(&display_map);
2244 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2245 selection.start = cursor.clone();
2246 selection.end = cursor;
2247 selection.reversed = false;
2248 selection.goal = SelectionGoal::None;
2249 }
2250 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2251 }
2252
2253 pub fn select_to_previous_word_boundary(
2254 &mut self,
2255 _: &SelectToPreviousWordBoundary,
2256 cx: &mut ViewContext<Self>,
2257 ) {
2258 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2259 let mut selections = self.local_selections::<Point>(cx);
2260 for selection in &mut selections {
2261 let head = selection.head().to_display_point(&display_map);
2262 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2263 selection.set_head(cursor);
2264 selection.goal = SelectionGoal::None;
2265 }
2266 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2267 }
2268
2269 pub fn delete_to_previous_word_boundary(
2270 &mut self,
2271 _: &DeleteToPreviousWordBoundary,
2272 cx: &mut ViewContext<Self>,
2273 ) {
2274 self.start_transaction(cx);
2275 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2276 let mut selections = self.local_selections::<Point>(cx);
2277 for selection in &mut selections {
2278 if selection.is_empty() {
2279 let head = selection.head().to_display_point(&display_map);
2280 let cursor =
2281 movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2282 selection.set_head(cursor);
2283 selection.goal = SelectionGoal::None;
2284 }
2285 }
2286 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2287 self.insert("", cx);
2288 self.end_transaction(cx);
2289 }
2290
2291 pub fn move_to_next_word_boundary(
2292 &mut self,
2293 _: &MoveToNextWordBoundary,
2294 cx: &mut ViewContext<Self>,
2295 ) {
2296 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2297 let mut selections = self.local_selections::<Point>(cx);
2298 for selection in &mut selections {
2299 let head = selection.head().to_display_point(&display_map);
2300 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
2301 selection.start = cursor;
2302 selection.end = cursor;
2303 selection.reversed = false;
2304 selection.goal = SelectionGoal::None;
2305 }
2306 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2307 }
2308
2309 pub fn select_to_next_word_boundary(
2310 &mut self,
2311 _: &SelectToNextWordBoundary,
2312 cx: &mut ViewContext<Self>,
2313 ) {
2314 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2315 let mut selections = self.local_selections::<Point>(cx);
2316 for selection in &mut selections {
2317 let head = selection.head().to_display_point(&display_map);
2318 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
2319 selection.set_head(cursor);
2320 selection.goal = SelectionGoal::None;
2321 }
2322 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2323 }
2324
2325 pub fn delete_to_next_word_boundary(
2326 &mut self,
2327 _: &DeleteToNextWordBoundary,
2328 cx: &mut ViewContext<Self>,
2329 ) {
2330 self.start_transaction(cx);
2331 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2332 let mut selections = self.local_selections::<Point>(cx);
2333 for selection in &mut selections {
2334 if selection.is_empty() {
2335 let head = selection.head().to_display_point(&display_map);
2336 let cursor =
2337 movement::next_word_boundary(&display_map, head).to_point(&display_map);
2338 selection.set_head(cursor);
2339 selection.goal = SelectionGoal::None;
2340 }
2341 }
2342 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2343 self.insert("", cx);
2344 self.end_transaction(cx);
2345 }
2346
2347 pub fn move_to_beginning_of_line(
2348 &mut self,
2349 _: &MoveToBeginningOfLine,
2350 cx: &mut ViewContext<Self>,
2351 ) {
2352 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2353 let mut selections = self.local_selections::<Point>(cx);
2354 for selection in &mut selections {
2355 let head = selection.head().to_display_point(&display_map);
2356 let new_head = movement::line_beginning(&display_map, head, true);
2357 let cursor = new_head.to_point(&display_map);
2358 selection.start = cursor;
2359 selection.end = cursor;
2360 selection.reversed = false;
2361 selection.goal = SelectionGoal::None;
2362 }
2363 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2364 }
2365
2366 pub fn select_to_beginning_of_line(
2367 &mut self,
2368 SelectToBeginningOfLine(toggle_indent): &SelectToBeginningOfLine,
2369 cx: &mut ViewContext<Self>,
2370 ) {
2371 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2372 let mut selections = self.local_selections::<Point>(cx);
2373 for selection in &mut selections {
2374 let head = selection.head().to_display_point(&display_map);
2375 let new_head = movement::line_beginning(&display_map, head, *toggle_indent);
2376 selection.set_head(new_head.to_point(&display_map));
2377 selection.goal = SelectionGoal::None;
2378 }
2379 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2380 }
2381
2382 pub fn delete_to_beginning_of_line(
2383 &mut self,
2384 _: &DeleteToBeginningOfLine,
2385 cx: &mut ViewContext<Self>,
2386 ) {
2387 self.start_transaction(cx);
2388 self.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
2389 self.backspace(&Backspace, cx);
2390 self.end_transaction(cx);
2391 }
2392
2393 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
2394 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2395 let mut selections = self.local_selections::<Point>(cx);
2396 {
2397 for selection in &mut selections {
2398 let head = selection.head().to_display_point(&display_map);
2399 let new_head = movement::line_end(&display_map, head);
2400 let anchor = new_head.to_point(&display_map);
2401 selection.start = anchor.clone();
2402 selection.end = anchor;
2403 selection.reversed = false;
2404 selection.goal = SelectionGoal::None;
2405 }
2406 }
2407 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2408 }
2409
2410 pub fn select_to_end_of_line(&mut self, _: &SelectToEndOfLine, cx: &mut ViewContext<Self>) {
2411 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2412 let mut selections = self.local_selections::<Point>(cx);
2413 for selection in &mut selections {
2414 let head = selection.head().to_display_point(&display_map);
2415 let new_head = movement::line_end(&display_map, head);
2416 selection.set_head(new_head.to_point(&display_map));
2417 selection.goal = SelectionGoal::None;
2418 }
2419 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2420 }
2421
2422 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
2423 self.start_transaction(cx);
2424 self.select_to_end_of_line(&SelectToEndOfLine, cx);
2425 self.delete(&Delete, cx);
2426 self.end_transaction(cx);
2427 }
2428
2429 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
2430 self.start_transaction(cx);
2431 self.select_to_end_of_line(&SelectToEndOfLine, cx);
2432 self.cut(&Cut, cx);
2433 self.end_transaction(cx);
2434 }
2435
2436 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
2437 if matches!(self.mode, EditorMode::SingleLine) {
2438 cx.propagate_action();
2439 return;
2440 }
2441
2442 let selection = Selection {
2443 id: post_inc(&mut self.next_selection_id),
2444 start: 0,
2445 end: 0,
2446 reversed: false,
2447 goal: SelectionGoal::None,
2448 };
2449 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2450 }
2451
2452 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
2453 let mut selection = self.local_selections::<Point>(cx).last().unwrap().clone();
2454 selection.set_head(Point::zero());
2455 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2456 }
2457
2458 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
2459 if matches!(self.mode, EditorMode::SingleLine) {
2460 cx.propagate_action();
2461 return;
2462 }
2463
2464 let cursor = self.buffer.read(cx).read(cx).len();
2465 let selection = Selection {
2466 id: post_inc(&mut self.next_selection_id),
2467 start: cursor,
2468 end: cursor,
2469 reversed: false,
2470 goal: SelectionGoal::None,
2471 };
2472 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2473 }
2474
2475 pub fn set_nav_history(&mut self, nav_history: Option<ItemNavHistory>) {
2476 self.nav_history = nav_history;
2477 }
2478
2479 pub fn nav_history(&self) -> Option<&ItemNavHistory> {
2480 self.nav_history.as_ref()
2481 }
2482
2483 fn push_to_nav_history(
2484 &self,
2485 position: Anchor,
2486 new_position: Option<Point>,
2487 cx: &mut ViewContext<Self>,
2488 ) {
2489 if let Some(nav_history) = &self.nav_history {
2490 let buffer = self.buffer.read(cx).read(cx);
2491 let offset = position.to_offset(&buffer);
2492 let point = position.to_point(&buffer);
2493 drop(buffer);
2494
2495 if let Some(new_position) = new_position {
2496 let row_delta = (new_position.row as i64 - point.row as i64).abs();
2497 if row_delta < MIN_NAVIGATION_HISTORY_ROW_DELTA {
2498 return;
2499 }
2500 }
2501
2502 nav_history.push(Some(NavigationData {
2503 anchor: position,
2504 offset,
2505 }));
2506 }
2507 }
2508
2509 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
2510 let mut selection = self.local_selections::<usize>(cx).first().unwrap().clone();
2511 selection.set_head(self.buffer.read(cx).read(cx).len());
2512 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2513 }
2514
2515 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
2516 let selection = Selection {
2517 id: post_inc(&mut self.next_selection_id),
2518 start: 0,
2519 end: self.buffer.read(cx).read(cx).len(),
2520 reversed: false,
2521 goal: SelectionGoal::None,
2522 };
2523 self.update_selections(vec![selection], None, cx);
2524 }
2525
2526 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
2527 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2528 let mut selections = self.local_selections::<Point>(cx);
2529 let max_point = display_map.buffer_snapshot.max_point();
2530 for selection in &mut selections {
2531 let rows = selection.spanned_rows(true, &display_map);
2532 selection.start = Point::new(rows.start, 0);
2533 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
2534 selection.reversed = false;
2535 }
2536 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2537 }
2538
2539 pub fn split_selection_into_lines(
2540 &mut self,
2541 _: &SplitSelectionIntoLines,
2542 cx: &mut ViewContext<Self>,
2543 ) {
2544 let mut to_unfold = Vec::new();
2545 let mut new_selections = Vec::new();
2546 {
2547 let selections = self.local_selections::<Point>(cx);
2548 let buffer = self.buffer.read(cx).read(cx);
2549 for selection in selections {
2550 for row in selection.start.row..selection.end.row {
2551 let cursor = Point::new(row, buffer.line_len(row));
2552 new_selections.push(Selection {
2553 id: post_inc(&mut self.next_selection_id),
2554 start: cursor,
2555 end: cursor,
2556 reversed: false,
2557 goal: SelectionGoal::None,
2558 });
2559 }
2560 new_selections.push(Selection {
2561 id: selection.id,
2562 start: selection.end,
2563 end: selection.end,
2564 reversed: false,
2565 goal: SelectionGoal::None,
2566 });
2567 to_unfold.push(selection.start..selection.end);
2568 }
2569 }
2570 self.unfold_ranges(to_unfold, cx);
2571 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2572 }
2573
2574 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
2575 self.add_selection(true, cx);
2576 }
2577
2578 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
2579 self.add_selection(false, cx);
2580 }
2581
2582 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
2583 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2584 let mut selections = self.local_selections::<Point>(cx);
2585 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
2586 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
2587 let range = oldest_selection.display_range(&display_map).sorted();
2588 let columns = cmp::min(range.start.column(), range.end.column())
2589 ..cmp::max(range.start.column(), range.end.column());
2590
2591 selections.clear();
2592 let mut stack = Vec::new();
2593 for row in range.start.row()..=range.end.row() {
2594 if let Some(selection) = self.build_columnar_selection(
2595 &display_map,
2596 row,
2597 &columns,
2598 oldest_selection.reversed,
2599 ) {
2600 stack.push(selection.id);
2601 selections.push(selection);
2602 }
2603 }
2604
2605 if above {
2606 stack.reverse();
2607 }
2608
2609 AddSelectionsState { above, stack }
2610 });
2611
2612 let last_added_selection = *state.stack.last().unwrap();
2613 let mut new_selections = Vec::new();
2614 if above == state.above {
2615 let end_row = if above {
2616 0
2617 } else {
2618 display_map.max_point().row()
2619 };
2620
2621 'outer: for selection in selections {
2622 if selection.id == last_added_selection {
2623 let range = selection.display_range(&display_map).sorted();
2624 debug_assert_eq!(range.start.row(), range.end.row());
2625 let mut row = range.start.row();
2626 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
2627 {
2628 start..end
2629 } else {
2630 cmp::min(range.start.column(), range.end.column())
2631 ..cmp::max(range.start.column(), range.end.column())
2632 };
2633
2634 while row != end_row {
2635 if above {
2636 row -= 1;
2637 } else {
2638 row += 1;
2639 }
2640
2641 if let Some(new_selection) = self.build_columnar_selection(
2642 &display_map,
2643 row,
2644 &columns,
2645 selection.reversed,
2646 ) {
2647 state.stack.push(new_selection.id);
2648 if above {
2649 new_selections.push(new_selection);
2650 new_selections.push(selection);
2651 } else {
2652 new_selections.push(selection);
2653 new_selections.push(new_selection);
2654 }
2655
2656 continue 'outer;
2657 }
2658 }
2659 }
2660
2661 new_selections.push(selection);
2662 }
2663 } else {
2664 new_selections = selections;
2665 new_selections.retain(|s| s.id != last_added_selection);
2666 state.stack.pop();
2667 }
2668
2669 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2670 if state.stack.len() > 1 {
2671 self.add_selections_state = Some(state);
2672 }
2673 }
2674
2675 pub fn select_next(&mut self, action: &SelectNext, cx: &mut ViewContext<Self>) {
2676 let replace_newest = action.0;
2677 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2678 let buffer = &display_map.buffer_snapshot;
2679 let mut selections = self.local_selections::<usize>(cx);
2680 if let Some(mut select_next_state) = self.select_next_state.take() {
2681 let query = &select_next_state.query;
2682 if !select_next_state.done {
2683 let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
2684 let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
2685 let mut next_selected_range = None;
2686
2687 let bytes_after_last_selection =
2688 buffer.bytes_in_range(last_selection.end..buffer.len());
2689 let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
2690 let query_matches = query
2691 .stream_find_iter(bytes_after_last_selection)
2692 .map(|result| (last_selection.end, result))
2693 .chain(
2694 query
2695 .stream_find_iter(bytes_before_first_selection)
2696 .map(|result| (0, result)),
2697 );
2698 for (start_offset, query_match) in query_matches {
2699 let query_match = query_match.unwrap(); // can only fail due to I/O
2700 let offset_range =
2701 start_offset + query_match.start()..start_offset + query_match.end();
2702 let display_range = offset_range.start.to_display_point(&display_map)
2703 ..offset_range.end.to_display_point(&display_map);
2704
2705 if !select_next_state.wordwise
2706 || (!movement::is_inside_word(&display_map, display_range.start)
2707 && !movement::is_inside_word(&display_map, display_range.end))
2708 {
2709 next_selected_range = Some(offset_range);
2710 break;
2711 }
2712 }
2713
2714 if let Some(next_selected_range) = next_selected_range {
2715 if replace_newest {
2716 if let Some(newest_id) =
2717 selections.iter().max_by_key(|s| s.id).map(|s| s.id)
2718 {
2719 selections.retain(|s| s.id != newest_id);
2720 }
2721 }
2722 selections.push(Selection {
2723 id: post_inc(&mut self.next_selection_id),
2724 start: next_selected_range.start,
2725 end: next_selected_range.end,
2726 reversed: false,
2727 goal: SelectionGoal::None,
2728 });
2729 self.update_selections(selections, Some(Autoscroll::Newest), cx);
2730 } else {
2731 select_next_state.done = true;
2732 }
2733 }
2734
2735 self.select_next_state = Some(select_next_state);
2736 } else if selections.len() == 1 {
2737 let selection = selections.last_mut().unwrap();
2738 if selection.start == selection.end {
2739 let word_range = movement::surrounding_word(
2740 &display_map,
2741 selection.start.to_display_point(&display_map),
2742 );
2743 selection.start = word_range.start.to_offset(&display_map, Bias::Left);
2744 selection.end = word_range.end.to_offset(&display_map, Bias::Left);
2745 selection.goal = SelectionGoal::None;
2746 selection.reversed = false;
2747
2748 let query = buffer
2749 .text_for_range(selection.start..selection.end)
2750 .collect::<String>();
2751 let select_state = SelectNextState {
2752 query: AhoCorasick::new_auto_configured(&[query]),
2753 wordwise: true,
2754 done: false,
2755 };
2756 self.update_selections(selections, Some(Autoscroll::Newest), cx);
2757 self.select_next_state = Some(select_state);
2758 } else {
2759 let query = buffer
2760 .text_for_range(selection.start..selection.end)
2761 .collect::<String>();
2762 self.select_next_state = Some(SelectNextState {
2763 query: AhoCorasick::new_auto_configured(&[query]),
2764 wordwise: false,
2765 done: false,
2766 });
2767 self.select_next(action, cx);
2768 }
2769 }
2770 }
2771
2772 pub fn toggle_comments(&mut self, _: &ToggleComments, cx: &mut ViewContext<Self>) {
2773 // Get the line comment prefix. Split its trailing whitespace into a separate string,
2774 // as that portion won't be used for detecting if a line is a comment.
2775 let full_comment_prefix =
2776 if let Some(prefix) = self.language(cx).and_then(|l| l.line_comment_prefix()) {
2777 prefix.to_string()
2778 } else {
2779 return;
2780 };
2781 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
2782 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
2783
2784 self.start_transaction(cx);
2785 let mut selections = self.local_selections::<Point>(cx);
2786 let mut all_selection_lines_are_comments = true;
2787 let mut edit_ranges = Vec::new();
2788 let mut last_toggled_row = None;
2789 self.buffer.update(cx, |buffer, cx| {
2790 for selection in &mut selections {
2791 edit_ranges.clear();
2792 let snapshot = buffer.snapshot(cx);
2793
2794 let end_row =
2795 if selection.end.row > selection.start.row && selection.end.column == 0 {
2796 selection.end.row
2797 } else {
2798 selection.end.row + 1
2799 };
2800
2801 for row in selection.start.row..end_row {
2802 // If multiple selections contain a given row, avoid processing that
2803 // row more than once.
2804 if last_toggled_row == Some(row) {
2805 continue;
2806 } else {
2807 last_toggled_row = Some(row);
2808 }
2809
2810 if snapshot.is_line_blank(row) {
2811 continue;
2812 }
2813
2814 let start = Point::new(row, snapshot.indent_column_for_line(row));
2815 let mut line_bytes = snapshot
2816 .bytes_in_range(start..snapshot.max_point())
2817 .flatten()
2818 .copied();
2819
2820 // If this line currently begins with the line comment prefix, then record
2821 // the range containing the prefix.
2822 if all_selection_lines_are_comments
2823 && line_bytes
2824 .by_ref()
2825 .take(comment_prefix.len())
2826 .eq(comment_prefix.bytes())
2827 {
2828 // Include any whitespace that matches the comment prefix.
2829 let matching_whitespace_len = line_bytes
2830 .zip(comment_prefix_whitespace.bytes())
2831 .take_while(|(a, b)| a == b)
2832 .count() as u32;
2833 let end = Point::new(
2834 row,
2835 start.column + comment_prefix.len() as u32 + matching_whitespace_len,
2836 );
2837 edit_ranges.push(start..end);
2838 }
2839 // If this line does not begin with the line comment prefix, then record
2840 // the position where the prefix should be inserted.
2841 else {
2842 all_selection_lines_are_comments = false;
2843 edit_ranges.push(start..start);
2844 }
2845 }
2846
2847 if !edit_ranges.is_empty() {
2848 if all_selection_lines_are_comments {
2849 buffer.edit(edit_ranges.iter().cloned(), "", cx);
2850 } else {
2851 let min_column = edit_ranges.iter().map(|r| r.start.column).min().unwrap();
2852 let edit_ranges = edit_ranges.iter().map(|range| {
2853 let position = Point::new(range.start.row, min_column);
2854 position..position
2855 });
2856 buffer.edit(edit_ranges, &full_comment_prefix, cx);
2857 }
2858 }
2859 }
2860 });
2861
2862 self.update_selections(
2863 self.local_selections::<usize>(cx),
2864 Some(Autoscroll::Fit),
2865 cx,
2866 );
2867 self.end_transaction(cx);
2868 }
2869
2870 pub fn select_larger_syntax_node(
2871 &mut self,
2872 _: &SelectLargerSyntaxNode,
2873 cx: &mut ViewContext<Self>,
2874 ) {
2875 let old_selections = self.local_selections::<usize>(cx).into_boxed_slice();
2876 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2877 let buffer = self.buffer.read(cx).snapshot(cx);
2878
2879 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
2880 let mut selected_larger_node = false;
2881 let new_selections = old_selections
2882 .iter()
2883 .map(|selection| {
2884 let old_range = selection.start..selection.end;
2885 let mut new_range = old_range.clone();
2886 while let Some(containing_range) =
2887 buffer.range_for_syntax_ancestor(new_range.clone())
2888 {
2889 new_range = containing_range;
2890 if !display_map.intersects_fold(new_range.start)
2891 && !display_map.intersects_fold(new_range.end)
2892 {
2893 break;
2894 }
2895 }
2896
2897 selected_larger_node |= new_range != old_range;
2898 Selection {
2899 id: selection.id,
2900 start: new_range.start,
2901 end: new_range.end,
2902 goal: SelectionGoal::None,
2903 reversed: selection.reversed,
2904 }
2905 })
2906 .collect::<Vec<_>>();
2907
2908 if selected_larger_node {
2909 stack.push(old_selections);
2910 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2911 }
2912 self.select_larger_syntax_node_stack = stack;
2913 }
2914
2915 pub fn select_smaller_syntax_node(
2916 &mut self,
2917 _: &SelectSmallerSyntaxNode,
2918 cx: &mut ViewContext<Self>,
2919 ) {
2920 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
2921 if let Some(selections) = stack.pop() {
2922 self.update_selections(selections.to_vec(), Some(Autoscroll::Fit), cx);
2923 }
2924 self.select_larger_syntax_node_stack = stack;
2925 }
2926
2927 pub fn move_to_enclosing_bracket(
2928 &mut self,
2929 _: &MoveToEnclosingBracket,
2930 cx: &mut ViewContext<Self>,
2931 ) {
2932 let mut selections = self.local_selections::<usize>(cx);
2933 let buffer = self.buffer.read(cx).snapshot(cx);
2934 for selection in &mut selections {
2935 if let Some((open_range, close_range)) =
2936 buffer.enclosing_bracket_ranges(selection.start..selection.end)
2937 {
2938 let close_range = close_range.to_inclusive();
2939 let destination = if close_range.contains(&selection.start)
2940 && close_range.contains(&selection.end)
2941 {
2942 open_range.end
2943 } else {
2944 *close_range.start()
2945 };
2946 selection.start = destination;
2947 selection.end = destination;
2948 }
2949 }
2950
2951 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2952 }
2953
2954 pub fn show_next_diagnostic(&mut self, _: &ShowNextDiagnostic, cx: &mut ViewContext<Self>) {
2955 let buffer = self.buffer.read(cx).snapshot(cx);
2956 let selection = self.newest_selection::<usize>(&buffer);
2957 let active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
2958 active_diagnostics
2959 .primary_range
2960 .to_offset(&buffer)
2961 .to_inclusive()
2962 });
2963 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
2964 if active_primary_range.contains(&selection.head()) {
2965 *active_primary_range.end()
2966 } else {
2967 selection.head()
2968 }
2969 } else {
2970 selection.head()
2971 };
2972
2973 loop {
2974 let next_group = buffer
2975 .diagnostics_in_range::<_, usize>(search_start..buffer.len())
2976 .find_map(|entry| {
2977 if entry.diagnostic.is_primary
2978 && !entry.range.is_empty()
2979 && Some(entry.range.end) != active_primary_range.as_ref().map(|r| *r.end())
2980 {
2981 Some((entry.range, entry.diagnostic.group_id))
2982 } else {
2983 None
2984 }
2985 });
2986
2987 if let Some((primary_range, group_id)) = next_group {
2988 self.activate_diagnostics(group_id, cx);
2989 self.update_selections(
2990 vec![Selection {
2991 id: selection.id,
2992 start: primary_range.start,
2993 end: primary_range.start,
2994 reversed: false,
2995 goal: SelectionGoal::None,
2996 }],
2997 Some(Autoscroll::Center),
2998 cx,
2999 );
3000 break;
3001 } else if search_start == 0 {
3002 break;
3003 } else {
3004 // Cycle around to the start of the buffer.
3005 search_start = 0;
3006 }
3007 }
3008 }
3009
3010 pub fn go_to_definition(
3011 workspace: &mut Workspace,
3012 _: &GoToDefinition,
3013 cx: &mut ViewContext<Workspace>,
3014 ) {
3015 let active_item = workspace.active_item(cx);
3016 let editor_handle = if let Some(editor) = active_item
3017 .as_ref()
3018 .and_then(|item| item.act_as::<Self>(cx))
3019 {
3020 editor
3021 } else {
3022 return;
3023 };
3024
3025 let editor = editor_handle.read(cx);
3026 let buffer = editor.buffer.read(cx);
3027 let head = editor.newest_selection::<usize>(&buffer.read(cx)).head();
3028 let (buffer, head) = editor.buffer.read(cx).text_anchor_for_position(head, cx);
3029 let definitions = workspace
3030 .project()
3031 .update(cx, |project, cx| project.definition(&buffer, head, cx));
3032 cx.spawn(|workspace, mut cx| async move {
3033 let definitions = definitions.await?;
3034 workspace.update(&mut cx, |workspace, cx| {
3035 for definition in definitions {
3036 let range = definition
3037 .target_range
3038 .to_offset(definition.target_buffer.read(cx));
3039 let target_editor_handle = workspace
3040 .open_item(BufferItemHandle(definition.target_buffer), cx)
3041 .downcast::<Self>()
3042 .unwrap();
3043
3044 target_editor_handle.update(cx, |target_editor, cx| {
3045 // When selecting a definition in a different buffer, disable the nav history
3046 // to avoid creating a history entry at the previous cursor location.
3047 let disabled_history = if editor_handle == target_editor_handle {
3048 None
3049 } else {
3050 target_editor.nav_history.take()
3051 };
3052 target_editor.select_ranges([range], Some(Autoscroll::Center), cx);
3053 if disabled_history.is_some() {
3054 target_editor.nav_history = disabled_history;
3055 }
3056 });
3057 }
3058 });
3059
3060 Ok::<(), anyhow::Error>(())
3061 })
3062 .detach_and_log_err(cx);
3063 }
3064
3065 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
3066 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
3067 let buffer = self.buffer.read(cx).snapshot(cx);
3068 let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
3069 let is_valid = buffer
3070 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone())
3071 .any(|entry| {
3072 entry.diagnostic.is_primary
3073 && !entry.range.is_empty()
3074 && entry.range.start == primary_range_start
3075 && entry.diagnostic.message == active_diagnostics.primary_message
3076 });
3077
3078 if is_valid != active_diagnostics.is_valid {
3079 active_diagnostics.is_valid = is_valid;
3080 let mut new_styles = HashMap::default();
3081 for (block_id, diagnostic) in &active_diagnostics.blocks {
3082 new_styles.insert(
3083 *block_id,
3084 diagnostic_block_renderer(
3085 diagnostic.clone(),
3086 is_valid,
3087 self.build_settings.clone(),
3088 ),
3089 );
3090 }
3091 self.display_map
3092 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
3093 }
3094 }
3095 }
3096
3097 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) {
3098 self.dismiss_diagnostics(cx);
3099 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
3100 let buffer = self.buffer.read(cx).snapshot(cx);
3101
3102 let mut primary_range = None;
3103 let mut primary_message = None;
3104 let mut group_end = Point::zero();
3105 let diagnostic_group = buffer
3106 .diagnostic_group::<Point>(group_id)
3107 .map(|entry| {
3108 if entry.range.end > group_end {
3109 group_end = entry.range.end;
3110 }
3111 if entry.diagnostic.is_primary {
3112 primary_range = Some(entry.range.clone());
3113 primary_message = Some(entry.diagnostic.message.clone());
3114 }
3115 entry
3116 })
3117 .collect::<Vec<_>>();
3118 let primary_range = primary_range.unwrap();
3119 let primary_message = primary_message.unwrap();
3120 let primary_range =
3121 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
3122
3123 let blocks = display_map
3124 .insert_blocks(
3125 diagnostic_group.iter().map(|entry| {
3126 let build_settings = self.build_settings.clone();
3127 let diagnostic = entry.diagnostic.clone();
3128 let message_height = diagnostic.message.lines().count() as u8;
3129
3130 BlockProperties {
3131 position: buffer.anchor_after(entry.range.start),
3132 height: message_height,
3133 render: diagnostic_block_renderer(diagnostic, true, build_settings),
3134 disposition: BlockDisposition::Below,
3135 }
3136 }),
3137 cx,
3138 )
3139 .into_iter()
3140 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
3141 .collect();
3142
3143 Some(ActiveDiagnosticGroup {
3144 primary_range,
3145 primary_message,
3146 blocks,
3147 is_valid: true,
3148 })
3149 });
3150 }
3151
3152 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
3153 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
3154 self.display_map.update(cx, |display_map, cx| {
3155 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
3156 });
3157 cx.notify();
3158 }
3159 }
3160
3161 fn build_columnar_selection(
3162 &mut self,
3163 display_map: &DisplaySnapshot,
3164 row: u32,
3165 columns: &Range<u32>,
3166 reversed: bool,
3167 ) -> Option<Selection<Point>> {
3168 let is_empty = columns.start == columns.end;
3169 let line_len = display_map.line_len(row);
3170 if columns.start < line_len || (is_empty && columns.start == line_len) {
3171 let start = DisplayPoint::new(row, columns.start);
3172 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
3173 Some(Selection {
3174 id: post_inc(&mut self.next_selection_id),
3175 start: start.to_point(display_map),
3176 end: end.to_point(display_map),
3177 reversed,
3178 goal: SelectionGoal::ColumnRange {
3179 start: columns.start,
3180 end: columns.end,
3181 },
3182 })
3183 } else {
3184 None
3185 }
3186 }
3187
3188 pub fn local_selections_in_range(
3189 &self,
3190 range: Range<Anchor>,
3191 display_map: &DisplaySnapshot,
3192 ) -> Vec<Selection<Point>> {
3193 let buffer = &display_map.buffer_snapshot;
3194
3195 let start_ix = match self
3196 .selections
3197 .binary_search_by(|probe| probe.end.cmp(&range.start, &buffer).unwrap())
3198 {
3199 Ok(ix) | Err(ix) => ix,
3200 };
3201 let end_ix = match self
3202 .selections
3203 .binary_search_by(|probe| probe.start.cmp(&range.end, &buffer).unwrap())
3204 {
3205 Ok(ix) => ix + 1,
3206 Err(ix) => ix,
3207 };
3208
3209 fn point_selection(
3210 selection: &Selection<Anchor>,
3211 buffer: &MultiBufferSnapshot,
3212 ) -> Selection<Point> {
3213 let start = selection.start.to_point(&buffer);
3214 let end = selection.end.to_point(&buffer);
3215 Selection {
3216 id: selection.id,
3217 start,
3218 end,
3219 reversed: selection.reversed,
3220 goal: selection.goal,
3221 }
3222 }
3223
3224 self.selections[start_ix..end_ix]
3225 .iter()
3226 .chain(
3227 self.pending_selection
3228 .as_ref()
3229 .map(|pending| &pending.selection),
3230 )
3231 .map(|s| point_selection(s, &buffer))
3232 .collect()
3233 }
3234
3235 pub fn local_selections<'a, D>(&self, cx: &'a AppContext) -> Vec<Selection<D>>
3236 where
3237 D: 'a + TextDimension + Ord + Sub<D, Output = D>,
3238 {
3239 let buffer = self.buffer.read(cx).snapshot(cx);
3240 let mut selections = self
3241 .resolve_selections::<D, _>(self.selections.iter(), &buffer)
3242 .peekable();
3243
3244 let mut pending_selection = self.pending_selection::<D>(&buffer);
3245
3246 iter::from_fn(move || {
3247 if let Some(pending) = pending_selection.as_mut() {
3248 while let Some(next_selection) = selections.peek() {
3249 if pending.start <= next_selection.end && pending.end >= next_selection.start {
3250 let next_selection = selections.next().unwrap();
3251 if next_selection.start < pending.start {
3252 pending.start = next_selection.start;
3253 }
3254 if next_selection.end > pending.end {
3255 pending.end = next_selection.end;
3256 }
3257 } else if next_selection.end < pending.start {
3258 return selections.next();
3259 } else {
3260 break;
3261 }
3262 }
3263
3264 pending_selection.take()
3265 } else {
3266 selections.next()
3267 }
3268 })
3269 .collect()
3270 }
3271
3272 fn resolve_selections<'a, D, I>(
3273 &self,
3274 selections: I,
3275 snapshot: &MultiBufferSnapshot,
3276 ) -> impl 'a + Iterator<Item = Selection<D>>
3277 where
3278 D: TextDimension + Ord + Sub<D, Output = D>,
3279 I: 'a + IntoIterator<Item = &'a Selection<Anchor>>,
3280 {
3281 let (to_summarize, selections) = selections.into_iter().tee();
3282 let mut summaries = snapshot
3283 .summaries_for_anchors::<D, _>(to_summarize.flat_map(|s| [&s.start, &s.end]))
3284 .into_iter();
3285 selections.map(move |s| Selection {
3286 id: s.id,
3287 start: summaries.next().unwrap(),
3288 end: summaries.next().unwrap(),
3289 reversed: s.reversed,
3290 goal: s.goal,
3291 })
3292 }
3293
3294 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3295 &self,
3296 snapshot: &MultiBufferSnapshot,
3297 ) -> Option<Selection<D>> {
3298 self.pending_selection
3299 .as_ref()
3300 .map(|pending| self.resolve_selection(&pending.selection, &snapshot))
3301 }
3302
3303 fn resolve_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3304 &self,
3305 selection: &Selection<Anchor>,
3306 buffer: &MultiBufferSnapshot,
3307 ) -> Selection<D> {
3308 Selection {
3309 id: selection.id,
3310 start: selection.start.summary::<D>(&buffer),
3311 end: selection.end.summary::<D>(&buffer),
3312 reversed: selection.reversed,
3313 goal: selection.goal,
3314 }
3315 }
3316
3317 fn selection_count<'a>(&self) -> usize {
3318 let mut count = self.selections.len();
3319 if self.pending_selection.is_some() {
3320 count += 1;
3321 }
3322 count
3323 }
3324
3325 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3326 &self,
3327 snapshot: &MultiBufferSnapshot,
3328 ) -> Selection<D> {
3329 self.selections
3330 .iter()
3331 .min_by_key(|s| s.id)
3332 .map(|selection| self.resolve_selection(selection, snapshot))
3333 .or_else(|| self.pending_selection(snapshot))
3334 .unwrap()
3335 }
3336
3337 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3338 &self,
3339 snapshot: &MultiBufferSnapshot,
3340 ) -> Selection<D> {
3341 self.resolve_selection(self.newest_selection_internal().unwrap(), snapshot)
3342 }
3343
3344 pub fn newest_selection_internal(&self) -> Option<&Selection<Anchor>> {
3345 self.pending_selection
3346 .as_ref()
3347 .map(|s| &s.selection)
3348 .or_else(|| self.selections.iter().max_by_key(|s| s.id))
3349 }
3350
3351 pub fn update_selections<T>(
3352 &mut self,
3353 mut selections: Vec<Selection<T>>,
3354 autoscroll: Option<Autoscroll>,
3355 cx: &mut ViewContext<Self>,
3356 ) where
3357 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
3358 {
3359 let buffer = self.buffer.read(cx).snapshot(cx);
3360 let old_cursor_position = self.newest_selection_internal().map(|s| s.head());
3361 selections.sort_unstable_by_key(|s| s.start);
3362
3363 // Merge overlapping selections.
3364 let mut i = 1;
3365 while i < selections.len() {
3366 if selections[i - 1].end >= selections[i].start {
3367 let removed = selections.remove(i);
3368 if removed.start < selections[i - 1].start {
3369 selections[i - 1].start = removed.start;
3370 }
3371 if removed.end > selections[i - 1].end {
3372 selections[i - 1].end = removed.end;
3373 }
3374 } else {
3375 i += 1;
3376 }
3377 }
3378
3379 self.pending_selection = None;
3380 self.add_selections_state = None;
3381 self.select_next_state = None;
3382 self.select_larger_syntax_node_stack.clear();
3383 while let Some(autoclose_pair) = self.autoclose_stack.last() {
3384 let all_selections_inside_autoclose_ranges =
3385 if selections.len() == autoclose_pair.ranges.len() {
3386 selections
3387 .iter()
3388 .zip(autoclose_pair.ranges.iter().map(|r| r.to_point(&buffer)))
3389 .all(|(selection, autoclose_range)| {
3390 let head = selection.head().to_point(&buffer);
3391 autoclose_range.start <= head && autoclose_range.end >= head
3392 })
3393 } else {
3394 false
3395 };
3396
3397 if all_selections_inside_autoclose_ranges {
3398 break;
3399 } else {
3400 self.autoclose_stack.pop();
3401 }
3402 }
3403
3404 if let Some(old_cursor_position) = old_cursor_position {
3405 let new_cursor_position = selections
3406 .iter()
3407 .max_by_key(|s| s.id)
3408 .map(|s| s.head().to_point(&buffer));
3409 if new_cursor_position.is_some() {
3410 self.push_to_nav_history(old_cursor_position, new_cursor_position, cx);
3411 }
3412 }
3413
3414 if let Some(autoscroll) = autoscroll {
3415 self.request_autoscroll(autoscroll, cx);
3416 }
3417 self.pause_cursor_blinking(cx);
3418
3419 self.set_selections(
3420 Arc::from_iter(selections.into_iter().map(|selection| {
3421 let end_bias = if selection.end > selection.start {
3422 Bias::Left
3423 } else {
3424 Bias::Right
3425 };
3426 Selection {
3427 id: selection.id,
3428 start: buffer.anchor_after(selection.start),
3429 end: buffer.anchor_at(selection.end, end_bias),
3430 reversed: selection.reversed,
3431 goal: selection.goal,
3432 }
3433 })),
3434 cx,
3435 );
3436 }
3437
3438 /// Compute new ranges for any selections that were located in excerpts that have
3439 /// since been removed.
3440 ///
3441 /// Returns a `HashMap` indicating which selections whose former head position
3442 /// was no longer present. The keys of the map are selection ids. The values are
3443 /// the id of the new excerpt where the head of the selection has been moved.
3444 pub fn refresh_selections(&mut self, cx: &mut ViewContext<Self>) -> HashMap<usize, ExcerptId> {
3445 let snapshot = self.buffer.read(cx).read(cx);
3446 let anchors_with_status = snapshot.refresh_anchors(
3447 self.selections
3448 .iter()
3449 .flat_map(|selection| [&selection.start, &selection.end]),
3450 );
3451 let offsets =
3452 snapshot.summaries_for_anchors::<usize, _>(anchors_with_status.iter().map(|a| &a.1));
3453 let offsets = offsets.chunks(2);
3454 let statuses = anchors_with_status
3455 .chunks(2)
3456 .map(|a| (a[0].0 / 2, a[0].2, a[1].2));
3457
3458 let mut selections_with_lost_position = HashMap::default();
3459 let new_selections = offsets
3460 .zip(statuses)
3461 .map(|(offsets, (selection_ix, kept_start, kept_end))| {
3462 let selection = &self.selections[selection_ix];
3463 let kept_head = if selection.reversed {
3464 kept_start
3465 } else {
3466 kept_end
3467 };
3468 if !kept_head {
3469 selections_with_lost_position
3470 .insert(selection.id, selection.head().excerpt_id.clone());
3471 }
3472
3473 Selection {
3474 id: selection.id,
3475 start: offsets[0],
3476 end: offsets[1],
3477 reversed: selection.reversed,
3478 goal: selection.goal,
3479 }
3480 })
3481 .collect();
3482 drop(snapshot);
3483 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3484 selections_with_lost_position
3485 }
3486
3487 fn set_selections(&mut self, selections: Arc<[Selection<Anchor>]>, cx: &mut ViewContext<Self>) {
3488 self.selections = selections;
3489 self.buffer.update(cx, |buffer, cx| {
3490 buffer.set_active_selections(&self.selections, cx)
3491 });
3492 }
3493
3494 pub fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
3495 self.autoscroll_request = Some(autoscroll);
3496 cx.notify();
3497 }
3498
3499 fn start_transaction(&mut self, cx: &mut ViewContext<Self>) {
3500 self.start_transaction_at(Instant::now(), cx);
3501 }
3502
3503 fn start_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
3504 self.end_selection(cx);
3505 if let Some(tx_id) = self
3506 .buffer
3507 .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
3508 {
3509 self.selection_history
3510 .insert(tx_id, (self.selections.clone(), None));
3511 }
3512 }
3513
3514 fn end_transaction(&mut self, cx: &mut ViewContext<Self>) {
3515 self.end_transaction_at(Instant::now(), cx);
3516 }
3517
3518 fn end_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
3519 if let Some(tx_id) = self
3520 .buffer
3521 .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
3522 {
3523 self.selection_history.get_mut(&tx_id).unwrap().1 = Some(self.selections.clone());
3524 }
3525 }
3526
3527 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
3528 log::info!("Editor::page_up");
3529 }
3530
3531 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
3532 log::info!("Editor::page_down");
3533 }
3534
3535 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
3536 let mut fold_ranges = Vec::new();
3537
3538 let selections = self.local_selections::<Point>(cx);
3539 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3540 for selection in selections {
3541 let range = selection.display_range(&display_map).sorted();
3542 let buffer_start_row = range.start.to_point(&display_map).row;
3543
3544 for row in (0..=range.end.row()).rev() {
3545 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
3546 let fold_range = self.foldable_range_for_line(&display_map, row);
3547 if fold_range.end.row >= buffer_start_row {
3548 fold_ranges.push(fold_range);
3549 if row <= range.start.row() {
3550 break;
3551 }
3552 }
3553 }
3554 }
3555 }
3556
3557 self.fold_ranges(fold_ranges, cx);
3558 }
3559
3560 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
3561 let selections = self.local_selections::<Point>(cx);
3562 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3563 let buffer = &display_map.buffer_snapshot;
3564 let ranges = selections
3565 .iter()
3566 .map(|s| {
3567 let range = s.display_range(&display_map).sorted();
3568 let mut start = range.start.to_point(&display_map);
3569 let mut end = range.end.to_point(&display_map);
3570 start.column = 0;
3571 end.column = buffer.line_len(end.row);
3572 start..end
3573 })
3574 .collect::<Vec<_>>();
3575 self.unfold_ranges(ranges, cx);
3576 }
3577
3578 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
3579 let max_point = display_map.max_point();
3580 if display_row >= max_point.row() {
3581 false
3582 } else {
3583 let (start_indent, is_blank) = display_map.line_indent(display_row);
3584 if is_blank {
3585 false
3586 } else {
3587 for display_row in display_row + 1..=max_point.row() {
3588 let (indent, is_blank) = display_map.line_indent(display_row);
3589 if !is_blank {
3590 return indent > start_indent;
3591 }
3592 }
3593 false
3594 }
3595 }
3596 }
3597
3598 fn foldable_range_for_line(
3599 &self,
3600 display_map: &DisplaySnapshot,
3601 start_row: u32,
3602 ) -> Range<Point> {
3603 let max_point = display_map.max_point();
3604
3605 let (start_indent, _) = display_map.line_indent(start_row);
3606 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
3607 let mut end = None;
3608 for row in start_row + 1..=max_point.row() {
3609 let (indent, is_blank) = display_map.line_indent(row);
3610 if !is_blank && indent <= start_indent {
3611 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
3612 break;
3613 }
3614 }
3615
3616 let end = end.unwrap_or(max_point);
3617 return start.to_point(display_map)..end.to_point(display_map);
3618 }
3619
3620 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
3621 let selections = self.local_selections::<Point>(cx);
3622 let ranges = selections.into_iter().map(|s| s.start..s.end);
3623 self.fold_ranges(ranges, cx);
3624 }
3625
3626 fn fold_ranges<T: ToOffset>(
3627 &mut self,
3628 ranges: impl IntoIterator<Item = Range<T>>,
3629 cx: &mut ViewContext<Self>,
3630 ) {
3631 let mut ranges = ranges.into_iter().peekable();
3632 if ranges.peek().is_some() {
3633 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
3634 self.request_autoscroll(Autoscroll::Fit, cx);
3635 cx.notify();
3636 }
3637 }
3638
3639 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
3640 if !ranges.is_empty() {
3641 self.display_map
3642 .update(cx, |map, cx| map.unfold(ranges, cx));
3643 self.request_autoscroll(Autoscroll::Fit, cx);
3644 cx.notify();
3645 }
3646 }
3647
3648 pub fn insert_blocks(
3649 &mut self,
3650 blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
3651 cx: &mut ViewContext<Self>,
3652 ) -> Vec<BlockId> {
3653 let blocks = self
3654 .display_map
3655 .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
3656 self.request_autoscroll(Autoscroll::Fit, cx);
3657 blocks
3658 }
3659
3660 pub fn replace_blocks(
3661 &mut self,
3662 blocks: HashMap<BlockId, RenderBlock>,
3663 cx: &mut ViewContext<Self>,
3664 ) {
3665 self.display_map
3666 .update(cx, |display_map, _| display_map.replace_blocks(blocks));
3667 self.request_autoscroll(Autoscroll::Fit, cx);
3668 }
3669
3670 pub fn remove_blocks(&mut self, block_ids: HashSet<BlockId>, cx: &mut ViewContext<Self>) {
3671 self.display_map.update(cx, |display_map, cx| {
3672 display_map.remove_blocks(block_ids, cx)
3673 });
3674 }
3675
3676 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
3677 self.display_map
3678 .update(cx, |map, cx| map.snapshot(cx))
3679 .longest_row()
3680 }
3681
3682 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
3683 self.display_map
3684 .update(cx, |map, cx| map.snapshot(cx))
3685 .max_point()
3686 }
3687
3688 pub fn text(&self, cx: &AppContext) -> String {
3689 self.buffer.read(cx).read(cx).text()
3690 }
3691
3692 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
3693 self.display_map
3694 .update(cx, |map, cx| map.snapshot(cx))
3695 .text()
3696 }
3697
3698 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
3699 self.display_map
3700 .update(cx, |map, cx| map.set_wrap_width(width, cx))
3701 }
3702
3703 pub fn set_highlighted_rows(&mut self, rows: Option<Range<u32>>) {
3704 self.highlighted_rows = rows;
3705 }
3706
3707 pub fn highlighted_rows(&self) -> Option<Range<u32>> {
3708 self.highlighted_rows.clone()
3709 }
3710
3711 fn next_blink_epoch(&mut self) -> usize {
3712 self.blink_epoch += 1;
3713 self.blink_epoch
3714 }
3715
3716 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
3717 self.show_local_cursors = true;
3718 cx.notify();
3719
3720 let epoch = self.next_blink_epoch();
3721 cx.spawn(|this, mut cx| {
3722 let this = this.downgrade();
3723 async move {
3724 Timer::after(CURSOR_BLINK_INTERVAL).await;
3725 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
3726 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
3727 }
3728 }
3729 })
3730 .detach();
3731 }
3732
3733 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
3734 if epoch == self.blink_epoch {
3735 self.blinking_paused = false;
3736 self.blink_cursors(epoch, cx);
3737 }
3738 }
3739
3740 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
3741 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
3742 self.show_local_cursors = !self.show_local_cursors;
3743 cx.notify();
3744
3745 let epoch = self.next_blink_epoch();
3746 cx.spawn(|this, mut cx| {
3747 let this = this.downgrade();
3748 async move {
3749 Timer::after(CURSOR_BLINK_INTERVAL).await;
3750 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
3751 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
3752 }
3753 }
3754 })
3755 .detach();
3756 }
3757 }
3758
3759 pub fn show_local_cursors(&self) -> bool {
3760 self.show_local_cursors
3761 }
3762
3763 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
3764 self.refresh_active_diagnostics(cx);
3765 cx.notify();
3766 }
3767
3768 fn on_buffer_event(
3769 &mut self,
3770 _: ModelHandle<MultiBuffer>,
3771 event: &language::Event,
3772 cx: &mut ViewContext<Self>,
3773 ) {
3774 match event {
3775 language::Event::Edited => cx.emit(Event::Edited),
3776 language::Event::Dirtied => cx.emit(Event::Dirtied),
3777 language::Event::Saved => cx.emit(Event::Saved),
3778 language::Event::FileHandleChanged => cx.emit(Event::TitleChanged),
3779 language::Event::Reloaded => cx.emit(Event::TitleChanged),
3780 language::Event::Closed => cx.emit(Event::Closed),
3781 _ => {}
3782 }
3783 }
3784
3785 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
3786 cx.notify();
3787 }
3788}
3789
3790impl EditorSnapshot {
3791 pub fn is_focused(&self) -> bool {
3792 self.is_focused
3793 }
3794
3795 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
3796 self.placeholder_text.as_ref()
3797 }
3798
3799 pub fn scroll_position(&self) -> Vector2F {
3800 compute_scroll_position(
3801 &self.display_snapshot,
3802 self.scroll_position,
3803 &self.scroll_top_anchor,
3804 )
3805 }
3806}
3807
3808impl Deref for EditorSnapshot {
3809 type Target = DisplaySnapshot;
3810
3811 fn deref(&self) -> &Self::Target {
3812 &self.display_snapshot
3813 }
3814}
3815
3816impl EditorSettings {
3817 #[cfg(any(test, feature = "test-support"))]
3818 pub fn test(cx: &AppContext) -> Self {
3819 use theme::{ContainedLabel, ContainedText, DiagnosticHeader, DiagnosticPathHeader};
3820
3821 Self {
3822 tab_size: 4,
3823 soft_wrap: SoftWrap::None,
3824 style: {
3825 let font_cache: &gpui::FontCache = cx.font_cache();
3826 let font_family_name = Arc::from("Monaco");
3827 let font_properties = Default::default();
3828 let font_family_id = font_cache.load_family(&[&font_family_name]).unwrap();
3829 let font_id = font_cache
3830 .select_font(font_family_id, &font_properties)
3831 .unwrap();
3832 let text = gpui::fonts::TextStyle {
3833 font_family_name,
3834 font_family_id,
3835 font_id,
3836 font_size: 14.,
3837 color: gpui::color::Color::from_u32(0xff0000ff),
3838 font_properties,
3839 underline: None,
3840 };
3841 let default_diagnostic_style = DiagnosticStyle {
3842 message: text.clone().into(),
3843 header: Default::default(),
3844 text_scale_factor: 1.,
3845 };
3846 EditorStyle {
3847 text: text.clone(),
3848 placeholder_text: None,
3849 background: Default::default(),
3850 gutter_background: Default::default(),
3851 gutter_padding_factor: 2.,
3852 active_line_background: Default::default(),
3853 highlighted_line_background: Default::default(),
3854 line_number: Default::default(),
3855 line_number_active: Default::default(),
3856 selection: Default::default(),
3857 guest_selections: Default::default(),
3858 syntax: Default::default(),
3859 diagnostic_path_header: DiagnosticPathHeader {
3860 container: Default::default(),
3861 filename: ContainedText {
3862 container: Default::default(),
3863 text: text.clone(),
3864 },
3865 path: ContainedText {
3866 container: Default::default(),
3867 text: text.clone(),
3868 },
3869 text_scale_factor: 1.,
3870 },
3871 diagnostic_header: DiagnosticHeader {
3872 container: Default::default(),
3873 message: ContainedLabel {
3874 container: Default::default(),
3875 label: text.clone().into(),
3876 },
3877 code: ContainedText {
3878 container: Default::default(),
3879 text: text.clone(),
3880 },
3881 icon_width_factor: 1.,
3882 text_scale_factor: 1.,
3883 },
3884 error_diagnostic: default_diagnostic_style.clone(),
3885 invalid_error_diagnostic: default_diagnostic_style.clone(),
3886 warning_diagnostic: default_diagnostic_style.clone(),
3887 invalid_warning_diagnostic: default_diagnostic_style.clone(),
3888 information_diagnostic: default_diagnostic_style.clone(),
3889 invalid_information_diagnostic: default_diagnostic_style.clone(),
3890 hint_diagnostic: default_diagnostic_style.clone(),
3891 invalid_hint_diagnostic: default_diagnostic_style.clone(),
3892 }
3893 },
3894 }
3895 }
3896}
3897
3898fn compute_scroll_position(
3899 snapshot: &DisplaySnapshot,
3900 mut scroll_position: Vector2F,
3901 scroll_top_anchor: &Option<Anchor>,
3902) -> Vector2F {
3903 if let Some(anchor) = scroll_top_anchor {
3904 let scroll_top = anchor.to_display_point(snapshot).row() as f32;
3905 scroll_position.set_y(scroll_top + scroll_position.y());
3906 } else {
3907 scroll_position.set_y(0.);
3908 }
3909 scroll_position
3910}
3911
3912#[derive(Copy, Clone)]
3913pub enum Event {
3914 Activate,
3915 Edited,
3916 Blurred,
3917 Dirtied,
3918 Saved,
3919 TitleChanged,
3920 Closed,
3921}
3922
3923impl Entity for Editor {
3924 type Event = Event;
3925}
3926
3927impl View for Editor {
3928 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
3929 let settings = (self.build_settings)(cx);
3930 self.display_map.update(cx, |map, cx| {
3931 map.set_font(
3932 settings.style.text.font_id,
3933 settings.style.text.font_size,
3934 cx,
3935 )
3936 });
3937 EditorElement::new(self.handle.clone(), settings).boxed()
3938 }
3939
3940 fn ui_name() -> &'static str {
3941 "Editor"
3942 }
3943
3944 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
3945 self.focused = true;
3946 self.blink_cursors(self.blink_epoch, cx);
3947 self.buffer.update(cx, |buffer, cx| {
3948 buffer.set_active_selections(&self.selections, cx)
3949 });
3950 }
3951
3952 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
3953 self.focused = false;
3954 self.show_local_cursors = false;
3955 self.buffer
3956 .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
3957 cx.emit(Event::Blurred);
3958 cx.notify();
3959 }
3960
3961 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
3962 let mut cx = Self::default_keymap_context();
3963 let mode = match self.mode {
3964 EditorMode::SingleLine => "single_line",
3965 EditorMode::AutoHeight { .. } => "auto_height",
3966 EditorMode::Full => "full",
3967 };
3968 cx.map.insert("mode".into(), mode.into());
3969 cx
3970 }
3971}
3972
3973impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
3974 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
3975 let start = self.start.to_point(buffer);
3976 let end = self.end.to_point(buffer);
3977 if self.reversed {
3978 end..start
3979 } else {
3980 start..end
3981 }
3982 }
3983
3984 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
3985 let start = self.start.to_offset(buffer);
3986 let end = self.end.to_offset(buffer);
3987 if self.reversed {
3988 end..start
3989 } else {
3990 start..end
3991 }
3992 }
3993
3994 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
3995 let start = self
3996 .start
3997 .to_point(&map.buffer_snapshot)
3998 .to_display_point(map);
3999 let end = self
4000 .end
4001 .to_point(&map.buffer_snapshot)
4002 .to_display_point(map);
4003 if self.reversed {
4004 end..start
4005 } else {
4006 start..end
4007 }
4008 }
4009
4010 fn spanned_rows(
4011 &self,
4012 include_end_if_at_line_start: bool,
4013 map: &DisplaySnapshot,
4014 ) -> Range<u32> {
4015 let start = self.start.to_point(&map.buffer_snapshot);
4016 let mut end = self.end.to_point(&map.buffer_snapshot);
4017 if !include_end_if_at_line_start && start.row != end.row && end.column == 0 {
4018 end.row -= 1;
4019 }
4020
4021 let buffer_start = map.prev_line_boundary(start).0;
4022 let buffer_end = map.next_line_boundary(end).0;
4023 buffer_start.row..buffer_end.row + 1
4024 }
4025}
4026
4027pub fn diagnostic_block_renderer(
4028 diagnostic: Diagnostic,
4029 is_valid: bool,
4030 build_settings: BuildSettings,
4031) -> RenderBlock {
4032 let mut highlighted_lines = Vec::new();
4033 for line in diagnostic.message.lines() {
4034 highlighted_lines.push(highlight_diagnostic_message(line));
4035 }
4036
4037 Arc::new(move |cx: &BlockContext| {
4038 let settings = build_settings(cx);
4039 let style = diagnostic_style(diagnostic.severity, is_valid, &settings.style);
4040 let font_size = (style.text_scale_factor * settings.style.text.font_size).round();
4041 Flex::column()
4042 .with_children(highlighted_lines.iter().map(|(line, highlights)| {
4043 Label::new(
4044 line.clone(),
4045 style.message.clone().with_font_size(font_size),
4046 )
4047 .with_highlights(highlights.clone())
4048 .contained()
4049 .with_margin_left(cx.anchor_x)
4050 .boxed()
4051 }))
4052 .aligned()
4053 .left()
4054 .boxed()
4055 })
4056}
4057
4058pub fn highlight_diagnostic_message(message: &str) -> (String, Vec<usize>) {
4059 let mut message_without_backticks = String::new();
4060 let mut prev_offset = 0;
4061 let mut inside_block = false;
4062 let mut highlights = Vec::new();
4063 for (match_ix, (offset, _)) in message
4064 .match_indices('`')
4065 .chain([(message.len(), "")])
4066 .enumerate()
4067 {
4068 message_without_backticks.push_str(&message[prev_offset..offset]);
4069 if inside_block {
4070 highlights.extend(prev_offset - match_ix..offset - match_ix);
4071 }
4072
4073 inside_block = !inside_block;
4074 prev_offset = offset + 1;
4075 }
4076
4077 (message_without_backticks, highlights)
4078}
4079
4080pub fn diagnostic_style(
4081 severity: DiagnosticSeverity,
4082 valid: bool,
4083 style: &EditorStyle,
4084) -> DiagnosticStyle {
4085 match (severity, valid) {
4086 (DiagnosticSeverity::ERROR, true) => style.error_diagnostic.clone(),
4087 (DiagnosticSeverity::ERROR, false) => style.invalid_error_diagnostic.clone(),
4088 (DiagnosticSeverity::WARNING, true) => style.warning_diagnostic.clone(),
4089 (DiagnosticSeverity::WARNING, false) => style.invalid_warning_diagnostic.clone(),
4090 (DiagnosticSeverity::INFORMATION, true) => style.information_diagnostic.clone(),
4091 (DiagnosticSeverity::INFORMATION, false) => style.invalid_information_diagnostic.clone(),
4092 (DiagnosticSeverity::HINT, true) => style.hint_diagnostic.clone(),
4093 (DiagnosticSeverity::HINT, false) => style.invalid_hint_diagnostic.clone(),
4094 _ => DiagnosticStyle {
4095 message: style.text.clone().into(),
4096 header: Default::default(),
4097 text_scale_factor: 1.,
4098 },
4099 }
4100}
4101
4102pub fn settings_builder(
4103 buffer: WeakModelHandle<MultiBuffer>,
4104 settings: watch::Receiver<workspace::Settings>,
4105) -> BuildSettings {
4106 Arc::new(move |cx| {
4107 let settings = settings.borrow();
4108 let font_cache = cx.font_cache();
4109 let font_family_id = settings.buffer_font_family;
4110 let font_family_name = cx.font_cache().family_name(font_family_id).unwrap();
4111 let font_properties = Default::default();
4112 let font_id = font_cache
4113 .select_font(font_family_id, &font_properties)
4114 .unwrap();
4115 let font_size = settings.buffer_font_size;
4116
4117 let mut theme = settings.theme.editor.clone();
4118 theme.text = TextStyle {
4119 color: theme.text.color,
4120 font_family_name,
4121 font_family_id,
4122 font_id,
4123 font_size,
4124 font_properties,
4125 underline: None,
4126 };
4127 let language = buffer.upgrade(cx).and_then(|buf| buf.read(cx).language(cx));
4128 let soft_wrap = match settings.soft_wrap(language) {
4129 workspace::settings::SoftWrap::None => SoftWrap::None,
4130 workspace::settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
4131 workspace::settings::SoftWrap::PreferredLineLength => {
4132 SoftWrap::Column(settings.preferred_line_length(language).saturating_sub(1))
4133 }
4134 };
4135
4136 EditorSettings {
4137 tab_size: settings.tab_size,
4138 soft_wrap,
4139 style: theme,
4140 }
4141 })
4142}
4143
4144#[cfg(test)]
4145mod tests {
4146 use super::*;
4147 use language::LanguageConfig;
4148 use std::{cell::RefCell, rc::Rc, time::Instant};
4149 use text::Point;
4150 use unindent::Unindent;
4151 use util::test::sample_text;
4152
4153 #[gpui::test]
4154 fn test_undo_redo_with_selection_restoration(cx: &mut MutableAppContext) {
4155 let mut now = Instant::now();
4156 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
4157 let group_interval = buffer.read(cx).transaction_group_interval();
4158 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
4159 let settings = EditorSettings::test(cx);
4160 let (_, editor) = cx.add_window(Default::default(), |cx| {
4161 build_editor(buffer.clone(), settings, cx)
4162 });
4163
4164 editor.update(cx, |editor, cx| {
4165 editor.start_transaction_at(now, cx);
4166 editor.select_ranges([2..4], None, cx);
4167 editor.insert("cd", cx);
4168 editor.end_transaction_at(now, cx);
4169 assert_eq!(editor.text(cx), "12cd56");
4170 assert_eq!(editor.selected_ranges(cx), vec![4..4]);
4171
4172 editor.start_transaction_at(now, cx);
4173 editor.select_ranges([4..5], None, cx);
4174 editor.insert("e", cx);
4175 editor.end_transaction_at(now, cx);
4176 assert_eq!(editor.text(cx), "12cde6");
4177 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
4178
4179 now += group_interval + Duration::from_millis(1);
4180 editor.select_ranges([2..2], None, cx);
4181
4182 // Simulate an edit in another editor
4183 buffer.update(cx, |buffer, cx| {
4184 buffer.start_transaction_at(now, cx);
4185 buffer.edit([0..1], "a", cx);
4186 buffer.edit([1..1], "b", cx);
4187 buffer.end_transaction_at(now, cx);
4188 });
4189
4190 assert_eq!(editor.text(cx), "ab2cde6");
4191 assert_eq!(editor.selected_ranges(cx), vec![3..3]);
4192
4193 // Last transaction happened past the group interval in a different editor.
4194 // Undo it individually and don't restore selections.
4195 editor.undo(&Undo, cx);
4196 assert_eq!(editor.text(cx), "12cde6");
4197 assert_eq!(editor.selected_ranges(cx), vec![2..2]);
4198
4199 // First two transactions happened within the group interval in this editor.
4200 // Undo them together and restore selections.
4201 editor.undo(&Undo, cx);
4202 editor.undo(&Undo, cx); // Undo stack is empty here, so this is a no-op.
4203 assert_eq!(editor.text(cx), "123456");
4204 assert_eq!(editor.selected_ranges(cx), vec![0..0]);
4205
4206 // Redo the first two transactions together.
4207 editor.redo(&Redo, cx);
4208 assert_eq!(editor.text(cx), "12cde6");
4209 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
4210
4211 // Redo the last transaction on its own.
4212 editor.redo(&Redo, cx);
4213 assert_eq!(editor.text(cx), "ab2cde6");
4214 assert_eq!(editor.selected_ranges(cx), vec![6..6]);
4215
4216 // Test empty transactions.
4217 editor.start_transaction_at(now, cx);
4218 editor.end_transaction_at(now, cx);
4219 editor.undo(&Undo, cx);
4220 assert_eq!(editor.text(cx), "12cde6");
4221 });
4222 }
4223
4224 #[gpui::test]
4225 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
4226 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
4227 let settings = EditorSettings::test(cx);
4228 let (_, editor) =
4229 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4230
4231 editor.update(cx, |view, cx| {
4232 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
4233 });
4234
4235 assert_eq!(
4236 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4237 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
4238 );
4239
4240 editor.update(cx, |view, cx| {
4241 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
4242 });
4243
4244 assert_eq!(
4245 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4246 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
4247 );
4248
4249 editor.update(cx, |view, cx| {
4250 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
4251 });
4252
4253 assert_eq!(
4254 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4255 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
4256 );
4257
4258 editor.update(cx, |view, cx| {
4259 view.end_selection(cx);
4260 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
4261 });
4262
4263 assert_eq!(
4264 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4265 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
4266 );
4267
4268 editor.update(cx, |view, cx| {
4269 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
4270 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
4271 });
4272
4273 assert_eq!(
4274 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4275 [
4276 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
4277 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
4278 ]
4279 );
4280
4281 editor.update(cx, |view, cx| {
4282 view.end_selection(cx);
4283 });
4284
4285 assert_eq!(
4286 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4287 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
4288 );
4289 }
4290
4291 #[gpui::test]
4292 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
4293 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
4294 let settings = EditorSettings::test(cx);
4295 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4296
4297 view.update(cx, |view, cx| {
4298 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
4299 assert_eq!(
4300 view.selected_display_ranges(cx),
4301 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
4302 );
4303 });
4304
4305 view.update(cx, |view, cx| {
4306 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
4307 assert_eq!(
4308 view.selected_display_ranges(cx),
4309 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
4310 );
4311 });
4312
4313 view.update(cx, |view, cx| {
4314 view.cancel(&Cancel, cx);
4315 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
4316 assert_eq!(
4317 view.selected_display_ranges(cx),
4318 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
4319 );
4320 });
4321 }
4322
4323 #[gpui::test]
4324 fn test_navigation_history(cx: &mut gpui::MutableAppContext) {
4325 cx.add_window(Default::default(), |cx| {
4326 use workspace::ItemView;
4327 let nav_history = Rc::new(RefCell::new(workspace::NavHistory::default()));
4328 let settings = EditorSettings::test(&cx);
4329 let buffer = MultiBuffer::build_simple(&sample_text(30, 5, 'a'), cx);
4330 let mut editor = build_editor(buffer.clone(), settings, cx);
4331 editor.nav_history = Some(ItemNavHistory::new(nav_history.clone(), &cx.handle()));
4332
4333 // Move the cursor a small distance.
4334 // Nothing is added to the navigation history.
4335 editor.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
4336 editor.select_display_ranges(&[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)], cx);
4337 assert!(nav_history.borrow_mut().pop_backward().is_none());
4338
4339 // Move the cursor a large distance.
4340 // The history can jump back to the previous position.
4341 editor.select_display_ranges(&[DisplayPoint::new(13, 0)..DisplayPoint::new(13, 3)], cx);
4342 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
4343 editor.navigate(nav_entry.data.unwrap(), cx);
4344 assert_eq!(nav_entry.item_view.id(), cx.view_id());
4345 assert_eq!(
4346 editor.selected_display_ranges(cx),
4347 &[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)]
4348 );
4349
4350 // Move the cursor a small distance via the mouse.
4351 // Nothing is added to the navigation history.
4352 editor.begin_selection(DisplayPoint::new(5, 0), false, 1, cx);
4353 editor.end_selection(cx);
4354 assert_eq!(
4355 editor.selected_display_ranges(cx),
4356 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
4357 );
4358 assert!(nav_history.borrow_mut().pop_backward().is_none());
4359
4360 // Move the cursor a large distance via the mouse.
4361 // The history can jump back to the previous position.
4362 editor.begin_selection(DisplayPoint::new(15, 0), false, 1, cx);
4363 editor.end_selection(cx);
4364 assert_eq!(
4365 editor.selected_display_ranges(cx),
4366 &[DisplayPoint::new(15, 0)..DisplayPoint::new(15, 0)]
4367 );
4368 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
4369 editor.navigate(nav_entry.data.unwrap(), cx);
4370 assert_eq!(nav_entry.item_view.id(), cx.view_id());
4371 assert_eq!(
4372 editor.selected_display_ranges(cx),
4373 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
4374 );
4375
4376 editor
4377 });
4378 }
4379
4380 #[gpui::test]
4381 fn test_cancel(cx: &mut gpui::MutableAppContext) {
4382 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
4383 let settings = EditorSettings::test(cx);
4384 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4385
4386 view.update(cx, |view, cx| {
4387 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
4388 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
4389 view.end_selection(cx);
4390
4391 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
4392 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
4393 view.end_selection(cx);
4394 assert_eq!(
4395 view.selected_display_ranges(cx),
4396 [
4397 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
4398 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
4399 ]
4400 );
4401 });
4402
4403 view.update(cx, |view, cx| {
4404 view.cancel(&Cancel, cx);
4405 assert_eq!(
4406 view.selected_display_ranges(cx),
4407 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
4408 );
4409 });
4410
4411 view.update(cx, |view, cx| {
4412 view.cancel(&Cancel, cx);
4413 assert_eq!(
4414 view.selected_display_ranges(cx),
4415 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
4416 );
4417 });
4418 }
4419
4420 #[gpui::test]
4421 fn test_fold(cx: &mut gpui::MutableAppContext) {
4422 let buffer = MultiBuffer::build_simple(
4423 &"
4424 impl Foo {
4425 // Hello!
4426
4427 fn a() {
4428 1
4429 }
4430
4431 fn b() {
4432 2
4433 }
4434
4435 fn c() {
4436 3
4437 }
4438 }
4439 "
4440 .unindent(),
4441 cx,
4442 );
4443 let settings = EditorSettings::test(&cx);
4444 let (_, view) = cx.add_window(Default::default(), |cx| {
4445 build_editor(buffer.clone(), settings, cx)
4446 });
4447
4448 view.update(cx, |view, cx| {
4449 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx);
4450 view.fold(&Fold, cx);
4451 assert_eq!(
4452 view.display_text(cx),
4453 "
4454 impl Foo {
4455 // Hello!
4456
4457 fn a() {
4458 1
4459 }
4460
4461 fn b() {…
4462 }
4463
4464 fn c() {…
4465 }
4466 }
4467 "
4468 .unindent(),
4469 );
4470
4471 view.fold(&Fold, cx);
4472 assert_eq!(
4473 view.display_text(cx),
4474 "
4475 impl Foo {…
4476 }
4477 "
4478 .unindent(),
4479 );
4480
4481 view.unfold(&Unfold, cx);
4482 assert_eq!(
4483 view.display_text(cx),
4484 "
4485 impl Foo {
4486 // Hello!
4487
4488 fn a() {
4489 1
4490 }
4491
4492 fn b() {…
4493 }
4494
4495 fn c() {…
4496 }
4497 }
4498 "
4499 .unindent(),
4500 );
4501
4502 view.unfold(&Unfold, cx);
4503 assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text());
4504 });
4505 }
4506
4507 #[gpui::test]
4508 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
4509 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
4510 let settings = EditorSettings::test(&cx);
4511 let (_, view) = cx.add_window(Default::default(), |cx| {
4512 build_editor(buffer.clone(), settings, cx)
4513 });
4514
4515 buffer.update(cx, |buffer, cx| {
4516 buffer.edit(
4517 vec![
4518 Point::new(1, 0)..Point::new(1, 0),
4519 Point::new(1, 1)..Point::new(1, 1),
4520 ],
4521 "\t",
4522 cx,
4523 );
4524 });
4525
4526 view.update(cx, |view, cx| {
4527 assert_eq!(
4528 view.selected_display_ranges(cx),
4529 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
4530 );
4531
4532 view.move_down(&MoveDown, cx);
4533 assert_eq!(
4534 view.selected_display_ranges(cx),
4535 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
4536 );
4537
4538 view.move_right(&MoveRight, cx);
4539 assert_eq!(
4540 view.selected_display_ranges(cx),
4541 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
4542 );
4543
4544 view.move_left(&MoveLeft, cx);
4545 assert_eq!(
4546 view.selected_display_ranges(cx),
4547 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
4548 );
4549
4550 view.move_up(&MoveUp, cx);
4551 assert_eq!(
4552 view.selected_display_ranges(cx),
4553 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
4554 );
4555
4556 view.move_to_end(&MoveToEnd, cx);
4557 assert_eq!(
4558 view.selected_display_ranges(cx),
4559 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
4560 );
4561
4562 view.move_to_beginning(&MoveToBeginning, cx);
4563 assert_eq!(
4564 view.selected_display_ranges(cx),
4565 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
4566 );
4567
4568 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx);
4569 view.select_to_beginning(&SelectToBeginning, cx);
4570 assert_eq!(
4571 view.selected_display_ranges(cx),
4572 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
4573 );
4574
4575 view.select_to_end(&SelectToEnd, cx);
4576 assert_eq!(
4577 view.selected_display_ranges(cx),
4578 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
4579 );
4580 });
4581 }
4582
4583 #[gpui::test]
4584 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
4585 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
4586 let settings = EditorSettings::test(&cx);
4587 let (_, view) = cx.add_window(Default::default(), |cx| {
4588 build_editor(buffer.clone(), settings, cx)
4589 });
4590
4591 assert_eq!('ⓐ'.len_utf8(), 3);
4592 assert_eq!('α'.len_utf8(), 2);
4593
4594 view.update(cx, |view, cx| {
4595 view.fold_ranges(
4596 vec![
4597 Point::new(0, 6)..Point::new(0, 12),
4598 Point::new(1, 2)..Point::new(1, 4),
4599 Point::new(2, 4)..Point::new(2, 8),
4600 ],
4601 cx,
4602 );
4603 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
4604
4605 view.move_right(&MoveRight, cx);
4606 assert_eq!(
4607 view.selected_display_ranges(cx),
4608 &[empty_range(0, "ⓐ".len())]
4609 );
4610 view.move_right(&MoveRight, cx);
4611 assert_eq!(
4612 view.selected_display_ranges(cx),
4613 &[empty_range(0, "ⓐⓑ".len())]
4614 );
4615 view.move_right(&MoveRight, cx);
4616 assert_eq!(
4617 view.selected_display_ranges(cx),
4618 &[empty_range(0, "ⓐⓑ…".len())]
4619 );
4620
4621 view.move_down(&MoveDown, cx);
4622 assert_eq!(
4623 view.selected_display_ranges(cx),
4624 &[empty_range(1, "ab…".len())]
4625 );
4626 view.move_left(&MoveLeft, cx);
4627 assert_eq!(
4628 view.selected_display_ranges(cx),
4629 &[empty_range(1, "ab".len())]
4630 );
4631 view.move_left(&MoveLeft, cx);
4632 assert_eq!(
4633 view.selected_display_ranges(cx),
4634 &[empty_range(1, "a".len())]
4635 );
4636
4637 view.move_down(&MoveDown, cx);
4638 assert_eq!(
4639 view.selected_display_ranges(cx),
4640 &[empty_range(2, "α".len())]
4641 );
4642 view.move_right(&MoveRight, cx);
4643 assert_eq!(
4644 view.selected_display_ranges(cx),
4645 &[empty_range(2, "αβ".len())]
4646 );
4647 view.move_right(&MoveRight, cx);
4648 assert_eq!(
4649 view.selected_display_ranges(cx),
4650 &[empty_range(2, "αβ…".len())]
4651 );
4652 view.move_right(&MoveRight, cx);
4653 assert_eq!(
4654 view.selected_display_ranges(cx),
4655 &[empty_range(2, "αβ…ε".len())]
4656 );
4657
4658 view.move_up(&MoveUp, cx);
4659 assert_eq!(
4660 view.selected_display_ranges(cx),
4661 &[empty_range(1, "ab…e".len())]
4662 );
4663 view.move_up(&MoveUp, cx);
4664 assert_eq!(
4665 view.selected_display_ranges(cx),
4666 &[empty_range(0, "ⓐⓑ…ⓔ".len())]
4667 );
4668 view.move_left(&MoveLeft, cx);
4669 assert_eq!(
4670 view.selected_display_ranges(cx),
4671 &[empty_range(0, "ⓐⓑ…".len())]
4672 );
4673 view.move_left(&MoveLeft, cx);
4674 assert_eq!(
4675 view.selected_display_ranges(cx),
4676 &[empty_range(0, "ⓐⓑ".len())]
4677 );
4678 view.move_left(&MoveLeft, cx);
4679 assert_eq!(
4680 view.selected_display_ranges(cx),
4681 &[empty_range(0, "ⓐ".len())]
4682 );
4683 });
4684 }
4685
4686 #[gpui::test]
4687 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
4688 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
4689 let settings = EditorSettings::test(&cx);
4690 let (_, view) = cx.add_window(Default::default(), |cx| {
4691 build_editor(buffer.clone(), settings, cx)
4692 });
4693 view.update(cx, |view, cx| {
4694 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx);
4695 view.move_down(&MoveDown, cx);
4696 assert_eq!(
4697 view.selected_display_ranges(cx),
4698 &[empty_range(1, "abcd".len())]
4699 );
4700
4701 view.move_down(&MoveDown, cx);
4702 assert_eq!(
4703 view.selected_display_ranges(cx),
4704 &[empty_range(2, "αβγ".len())]
4705 );
4706
4707 view.move_down(&MoveDown, cx);
4708 assert_eq!(
4709 view.selected_display_ranges(cx),
4710 &[empty_range(3, "abcd".len())]
4711 );
4712
4713 view.move_down(&MoveDown, cx);
4714 assert_eq!(
4715 view.selected_display_ranges(cx),
4716 &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
4717 );
4718
4719 view.move_up(&MoveUp, cx);
4720 assert_eq!(
4721 view.selected_display_ranges(cx),
4722 &[empty_range(3, "abcd".len())]
4723 );
4724
4725 view.move_up(&MoveUp, cx);
4726 assert_eq!(
4727 view.selected_display_ranges(cx),
4728 &[empty_range(2, "αβγ".len())]
4729 );
4730 });
4731 }
4732
4733 #[gpui::test]
4734 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
4735 let buffer = MultiBuffer::build_simple("abc\n def", cx);
4736 let settings = EditorSettings::test(&cx);
4737 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4738 view.update(cx, |view, cx| {
4739 view.select_display_ranges(
4740 &[
4741 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4742 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
4743 ],
4744 cx,
4745 );
4746 });
4747
4748 view.update(cx, |view, cx| {
4749 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
4750 assert_eq!(
4751 view.selected_display_ranges(cx),
4752 &[
4753 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4754 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
4755 ]
4756 );
4757 });
4758
4759 view.update(cx, |view, cx| {
4760 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
4761 assert_eq!(
4762 view.selected_display_ranges(cx),
4763 &[
4764 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4765 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4766 ]
4767 );
4768 });
4769
4770 view.update(cx, |view, cx| {
4771 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
4772 assert_eq!(
4773 view.selected_display_ranges(cx),
4774 &[
4775 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4776 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
4777 ]
4778 );
4779 });
4780
4781 view.update(cx, |view, cx| {
4782 view.move_to_end_of_line(&MoveToEndOfLine, cx);
4783 assert_eq!(
4784 view.selected_display_ranges(cx),
4785 &[
4786 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4787 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
4788 ]
4789 );
4790 });
4791
4792 // Moving to the end of line again is a no-op.
4793 view.update(cx, |view, cx| {
4794 view.move_to_end_of_line(&MoveToEndOfLine, cx);
4795 assert_eq!(
4796 view.selected_display_ranges(cx),
4797 &[
4798 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4799 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
4800 ]
4801 );
4802 });
4803
4804 view.update(cx, |view, cx| {
4805 view.move_left(&MoveLeft, cx);
4806 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
4807 assert_eq!(
4808 view.selected_display_ranges(cx),
4809 &[
4810 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
4811 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
4812 ]
4813 );
4814 });
4815
4816 view.update(cx, |view, cx| {
4817 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
4818 assert_eq!(
4819 view.selected_display_ranges(cx),
4820 &[
4821 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
4822 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
4823 ]
4824 );
4825 });
4826
4827 view.update(cx, |view, cx| {
4828 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
4829 assert_eq!(
4830 view.selected_display_ranges(cx),
4831 &[
4832 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
4833 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
4834 ]
4835 );
4836 });
4837
4838 view.update(cx, |view, cx| {
4839 view.select_to_end_of_line(&SelectToEndOfLine, cx);
4840 assert_eq!(
4841 view.selected_display_ranges(cx),
4842 &[
4843 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
4844 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
4845 ]
4846 );
4847 });
4848
4849 view.update(cx, |view, cx| {
4850 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
4851 assert_eq!(view.display_text(cx), "ab\n de");
4852 assert_eq!(
4853 view.selected_display_ranges(cx),
4854 &[
4855 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4856 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
4857 ]
4858 );
4859 });
4860
4861 view.update(cx, |view, cx| {
4862 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
4863 assert_eq!(view.display_text(cx), "\n");
4864 assert_eq!(
4865 view.selected_display_ranges(cx),
4866 &[
4867 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4868 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4869 ]
4870 );
4871 });
4872 }
4873
4874 #[gpui::test]
4875 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
4876 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
4877 let settings = EditorSettings::test(&cx);
4878 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4879 view.update(cx, |view, cx| {
4880 view.select_display_ranges(
4881 &[
4882 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
4883 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
4884 ],
4885 cx,
4886 );
4887 });
4888
4889 view.update(cx, |view, cx| {
4890 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4891 assert_eq!(
4892 view.selected_display_ranges(cx),
4893 &[
4894 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
4895 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
4896 ]
4897 );
4898 });
4899
4900 view.update(cx, |view, cx| {
4901 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4902 assert_eq!(
4903 view.selected_display_ranges(cx),
4904 &[
4905 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
4906 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2),
4907 ]
4908 );
4909 });
4910
4911 view.update(cx, |view, cx| {
4912 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4913 assert_eq!(
4914 view.selected_display_ranges(cx),
4915 &[
4916 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
4917 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
4918 ]
4919 );
4920 });
4921
4922 view.update(cx, |view, cx| {
4923 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4924 assert_eq!(
4925 view.selected_display_ranges(cx),
4926 &[
4927 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4928 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4929 ]
4930 );
4931 });
4932
4933 view.update(cx, |view, cx| {
4934 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4935 assert_eq!(
4936 view.selected_display_ranges(cx),
4937 &[
4938 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4939 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 23),
4940 ]
4941 );
4942 });
4943
4944 view.update(cx, |view, cx| {
4945 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4946 assert_eq!(
4947 view.selected_display_ranges(cx),
4948 &[
4949 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4950 DisplayPoint::new(0, 24)..DisplayPoint::new(0, 24),
4951 ]
4952 );
4953 });
4954
4955 view.update(cx, |view, cx| {
4956 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4957 assert_eq!(
4958 view.selected_display_ranges(cx),
4959 &[
4960 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
4961 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4962 ]
4963 );
4964 });
4965
4966 view.update(cx, |view, cx| {
4967 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4968 assert_eq!(
4969 view.selected_display_ranges(cx),
4970 &[
4971 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
4972 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
4973 ]
4974 );
4975 });
4976
4977 view.update(cx, |view, cx| {
4978 view.move_right(&MoveRight, cx);
4979 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
4980 assert_eq!(
4981 view.selected_display_ranges(cx),
4982 &[
4983 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
4984 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
4985 ]
4986 );
4987 });
4988
4989 view.update(cx, |view, cx| {
4990 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
4991 assert_eq!(
4992 view.selected_display_ranges(cx),
4993 &[
4994 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 7),
4995 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 2),
4996 ]
4997 );
4998 });
4999
5000 view.update(cx, |view, cx| {
5001 view.select_to_next_word_boundary(&SelectToNextWordBoundary, cx);
5002 assert_eq!(
5003 view.selected_display_ranges(cx),
5004 &[
5005 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
5006 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
5007 ]
5008 );
5009 });
5010 }
5011
5012 #[gpui::test]
5013 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
5014 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
5015 let settings = EditorSettings::test(&cx);
5016 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5017
5018 view.update(cx, |view, cx| {
5019 view.set_wrap_width(Some(140.), cx);
5020 assert_eq!(
5021 view.display_text(cx),
5022 "use one::{\n two::three::\n four::five\n};"
5023 );
5024
5025 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx);
5026
5027 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5028 assert_eq!(
5029 view.selected_display_ranges(cx),
5030 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
5031 );
5032
5033 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5034 assert_eq!(
5035 view.selected_display_ranges(cx),
5036 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
5037 );
5038
5039 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5040 assert_eq!(
5041 view.selected_display_ranges(cx),
5042 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
5043 );
5044
5045 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5046 assert_eq!(
5047 view.selected_display_ranges(cx),
5048 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
5049 );
5050
5051 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5052 assert_eq!(
5053 view.selected_display_ranges(cx),
5054 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
5055 );
5056
5057 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5058 assert_eq!(
5059 view.selected_display_ranges(cx),
5060 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
5061 );
5062 });
5063 }
5064
5065 #[gpui::test]
5066 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
5067 let buffer = MultiBuffer::build_simple("one two three four", cx);
5068 let settings = EditorSettings::test(&cx);
5069 let (_, view) = cx.add_window(Default::default(), |cx| {
5070 build_editor(buffer.clone(), settings, cx)
5071 });
5072
5073 view.update(cx, |view, cx| {
5074 view.select_display_ranges(
5075 &[
5076 // an empty selection - the preceding word fragment is deleted
5077 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5078 // characters selected - they are deleted
5079 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
5080 ],
5081 cx,
5082 );
5083 view.delete_to_previous_word_boundary(&DeleteToPreviousWordBoundary, cx);
5084 });
5085
5086 assert_eq!(buffer.read(cx).read(cx).text(), "e two te four");
5087
5088 view.update(cx, |view, cx| {
5089 view.select_display_ranges(
5090 &[
5091 // an empty selection - the following word fragment is deleted
5092 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5093 // characters selected - they are deleted
5094 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
5095 ],
5096 cx,
5097 );
5098 view.delete_to_next_word_boundary(&DeleteToNextWordBoundary, cx);
5099 });
5100
5101 assert_eq!(buffer.read(cx).read(cx).text(), "e t te our");
5102 }
5103
5104 #[gpui::test]
5105 fn test_newline(cx: &mut gpui::MutableAppContext) {
5106 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
5107 let settings = EditorSettings::test(&cx);
5108 let (_, view) = cx.add_window(Default::default(), |cx| {
5109 build_editor(buffer.clone(), settings, cx)
5110 });
5111
5112 view.update(cx, |view, cx| {
5113 view.select_display_ranges(
5114 &[
5115 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5116 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5117 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
5118 ],
5119 cx,
5120 );
5121
5122 view.newline(&Newline, cx);
5123 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
5124 });
5125 }
5126
5127 #[gpui::test]
5128 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
5129 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
5130 let settings = EditorSettings::test(&cx);
5131 let (_, view) = cx.add_window(Default::default(), |cx| {
5132 build_editor(buffer.clone(), settings, cx)
5133 });
5134
5135 view.update(cx, |view, cx| {
5136 // two selections on the same line
5137 view.select_display_ranges(
5138 &[
5139 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
5140 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
5141 ],
5142 cx,
5143 );
5144
5145 // indent from mid-tabstop to full tabstop
5146 view.tab(&Tab, cx);
5147 assert_eq!(view.text(cx), " one two\nthree\n four");
5148 assert_eq!(
5149 view.selected_display_ranges(cx),
5150 &[
5151 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
5152 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
5153 ]
5154 );
5155
5156 // outdent from 1 tabstop to 0 tabstops
5157 view.outdent(&Outdent, cx);
5158 assert_eq!(view.text(cx), "one two\nthree\n four");
5159 assert_eq!(
5160 view.selected_display_ranges(cx),
5161 &[
5162 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
5163 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
5164 ]
5165 );
5166
5167 // select across line ending
5168 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx);
5169
5170 // indent and outdent affect only the preceding line
5171 view.tab(&Tab, cx);
5172 assert_eq!(view.text(cx), "one two\n three\n four");
5173 assert_eq!(
5174 view.selected_display_ranges(cx),
5175 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
5176 );
5177 view.outdent(&Outdent, cx);
5178 assert_eq!(view.text(cx), "one two\nthree\n four");
5179 assert_eq!(
5180 view.selected_display_ranges(cx),
5181 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
5182 );
5183
5184 // Ensure that indenting/outdenting works when the cursor is at column 0.
5185 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
5186 view.tab(&Tab, cx);
5187 assert_eq!(view.text(cx), "one two\n three\n four");
5188 assert_eq!(
5189 view.selected_display_ranges(cx),
5190 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
5191 );
5192
5193 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
5194 view.outdent(&Outdent, cx);
5195 assert_eq!(view.text(cx), "one two\nthree\n four");
5196 assert_eq!(
5197 view.selected_display_ranges(cx),
5198 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
5199 );
5200 });
5201 }
5202
5203 #[gpui::test]
5204 fn test_backspace(cx: &mut gpui::MutableAppContext) {
5205 let buffer =
5206 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
5207 let settings = EditorSettings::test(&cx);
5208 let (_, view) = cx.add_window(Default::default(), |cx| {
5209 build_editor(buffer.clone(), settings, cx)
5210 });
5211
5212 view.update(cx, |view, cx| {
5213 view.select_display_ranges(
5214 &[
5215 // an empty selection - the preceding character is deleted
5216 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5217 // one character selected - it is deleted
5218 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
5219 // a line suffix selected - it is deleted
5220 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
5221 ],
5222 cx,
5223 );
5224 view.backspace(&Backspace, cx);
5225 });
5226
5227 assert_eq!(
5228 buffer.read(cx).read(cx).text(),
5229 "oe two three\nfou five six\nseven ten\n"
5230 );
5231 }
5232
5233 #[gpui::test]
5234 fn test_delete(cx: &mut gpui::MutableAppContext) {
5235 let buffer =
5236 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
5237 let settings = EditorSettings::test(&cx);
5238 let (_, view) = cx.add_window(Default::default(), |cx| {
5239 build_editor(buffer.clone(), settings, cx)
5240 });
5241
5242 view.update(cx, |view, cx| {
5243 view.select_display_ranges(
5244 &[
5245 // an empty selection - the following character is deleted
5246 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5247 // one character selected - it is deleted
5248 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
5249 // a line suffix selected - it is deleted
5250 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
5251 ],
5252 cx,
5253 );
5254 view.delete(&Delete, cx);
5255 });
5256
5257 assert_eq!(
5258 buffer.read(cx).read(cx).text(),
5259 "on two three\nfou five six\nseven ten\n"
5260 );
5261 }
5262
5263 #[gpui::test]
5264 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
5265 let settings = EditorSettings::test(&cx);
5266 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
5267 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5268 view.update(cx, |view, cx| {
5269 view.select_display_ranges(
5270 &[
5271 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5272 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
5273 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5274 ],
5275 cx,
5276 );
5277 view.delete_line(&DeleteLine, cx);
5278 assert_eq!(view.display_text(cx), "ghi");
5279 assert_eq!(
5280 view.selected_display_ranges(cx),
5281 vec![
5282 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5283 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
5284 ]
5285 );
5286 });
5287
5288 let settings = EditorSettings::test(&cx);
5289 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
5290 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5291 view.update(cx, |view, cx| {
5292 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx);
5293 view.delete_line(&DeleteLine, cx);
5294 assert_eq!(view.display_text(cx), "ghi\n");
5295 assert_eq!(
5296 view.selected_display_ranges(cx),
5297 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
5298 );
5299 });
5300 }
5301
5302 #[gpui::test]
5303 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
5304 let settings = EditorSettings::test(&cx);
5305 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
5306 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5307 view.update(cx, |view, cx| {
5308 view.select_display_ranges(
5309 &[
5310 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
5311 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5312 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5313 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5314 ],
5315 cx,
5316 );
5317 view.duplicate_line(&DuplicateLine, cx);
5318 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
5319 assert_eq!(
5320 view.selected_display_ranges(cx),
5321 vec![
5322 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
5323 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5324 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5325 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
5326 ]
5327 );
5328 });
5329
5330 let settings = EditorSettings::test(&cx);
5331 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
5332 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5333 view.update(cx, |view, cx| {
5334 view.select_display_ranges(
5335 &[
5336 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
5337 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
5338 ],
5339 cx,
5340 );
5341 view.duplicate_line(&DuplicateLine, cx);
5342 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
5343 assert_eq!(
5344 view.selected_display_ranges(cx),
5345 vec![
5346 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
5347 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
5348 ]
5349 );
5350 });
5351 }
5352
5353 #[gpui::test]
5354 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
5355 let settings = EditorSettings::test(&cx);
5356 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
5357 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5358 view.update(cx, |view, cx| {
5359 view.fold_ranges(
5360 vec![
5361 Point::new(0, 2)..Point::new(1, 2),
5362 Point::new(2, 3)..Point::new(4, 1),
5363 Point::new(7, 0)..Point::new(8, 4),
5364 ],
5365 cx,
5366 );
5367 view.select_display_ranges(
5368 &[
5369 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5370 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
5371 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
5372 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
5373 ],
5374 cx,
5375 );
5376 assert_eq!(
5377 view.display_text(cx),
5378 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
5379 );
5380
5381 view.move_line_up(&MoveLineUp, cx);
5382 assert_eq!(
5383 view.display_text(cx),
5384 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
5385 );
5386 assert_eq!(
5387 view.selected_display_ranges(cx),
5388 vec![
5389 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5390 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5391 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
5392 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
5393 ]
5394 );
5395 });
5396
5397 view.update(cx, |view, cx| {
5398 view.move_line_down(&MoveLineDown, cx);
5399 assert_eq!(
5400 view.display_text(cx),
5401 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
5402 );
5403 assert_eq!(
5404 view.selected_display_ranges(cx),
5405 vec![
5406 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5407 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
5408 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
5409 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
5410 ]
5411 );
5412 });
5413
5414 view.update(cx, |view, cx| {
5415 view.move_line_down(&MoveLineDown, cx);
5416 assert_eq!(
5417 view.display_text(cx),
5418 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
5419 );
5420 assert_eq!(
5421 view.selected_display_ranges(cx),
5422 vec![
5423 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5424 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
5425 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
5426 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
5427 ]
5428 );
5429 });
5430
5431 view.update(cx, |view, cx| {
5432 view.move_line_up(&MoveLineUp, cx);
5433 assert_eq!(
5434 view.display_text(cx),
5435 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
5436 );
5437 assert_eq!(
5438 view.selected_display_ranges(cx),
5439 vec![
5440 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5441 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5442 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
5443 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
5444 ]
5445 );
5446 });
5447 }
5448
5449 #[gpui::test]
5450 fn test_move_line_up_down_with_blocks(cx: &mut gpui::MutableAppContext) {
5451 let settings = EditorSettings::test(&cx);
5452 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
5453 let snapshot = buffer.read(cx).snapshot(cx);
5454 let (_, editor) =
5455 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5456 editor.update(cx, |editor, cx| {
5457 editor.insert_blocks(
5458 [BlockProperties {
5459 position: snapshot.anchor_after(Point::new(2, 0)),
5460 disposition: BlockDisposition::Below,
5461 height: 1,
5462 render: Arc::new(|_| Empty::new().boxed()),
5463 }],
5464 cx,
5465 );
5466 editor.select_ranges([Point::new(2, 0)..Point::new(2, 0)], None, cx);
5467 editor.move_line_down(&MoveLineDown, cx);
5468 });
5469 }
5470
5471 #[gpui::test]
5472 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
5473 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
5474 let settings = EditorSettings::test(&cx);
5475 let view = cx
5476 .add_window(Default::default(), |cx| {
5477 build_editor(buffer.clone(), settings, cx)
5478 })
5479 .1;
5480
5481 // Cut with three selections. Clipboard text is divided into three slices.
5482 view.update(cx, |view, cx| {
5483 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
5484 view.cut(&Cut, cx);
5485 assert_eq!(view.display_text(cx), "two four six ");
5486 });
5487
5488 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
5489 view.update(cx, |view, cx| {
5490 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
5491 view.paste(&Paste, cx);
5492 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
5493 assert_eq!(
5494 view.selected_display_ranges(cx),
5495 &[
5496 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
5497 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
5498 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
5499 ]
5500 );
5501 });
5502
5503 // Paste again but with only two cursors. Since the number of cursors doesn't
5504 // match the number of slices in the clipboard, the entire clipboard text
5505 // is pasted at each cursor.
5506 view.update(cx, |view, cx| {
5507 view.select_ranges(vec![0..0, 31..31], None, cx);
5508 view.handle_input(&Input("( ".into()), cx);
5509 view.paste(&Paste, cx);
5510 view.handle_input(&Input(") ".into()), cx);
5511 assert_eq!(
5512 view.display_text(cx),
5513 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
5514 );
5515 });
5516
5517 view.update(cx, |view, cx| {
5518 view.select_ranges(vec![0..0], None, cx);
5519 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
5520 assert_eq!(
5521 view.display_text(cx),
5522 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
5523 );
5524 });
5525
5526 // Cut with three selections, one of which is full-line.
5527 view.update(cx, |view, cx| {
5528 view.select_display_ranges(
5529 &[
5530 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
5531 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5532 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
5533 ],
5534 cx,
5535 );
5536 view.cut(&Cut, cx);
5537 assert_eq!(
5538 view.display_text(cx),
5539 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
5540 );
5541 });
5542
5543 // Paste with three selections, noticing how the copied selection that was full-line
5544 // gets inserted before the second cursor.
5545 view.update(cx, |view, cx| {
5546 view.select_display_ranges(
5547 &[
5548 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5549 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5550 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
5551 ],
5552 cx,
5553 );
5554 view.paste(&Paste, cx);
5555 assert_eq!(
5556 view.display_text(cx),
5557 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
5558 );
5559 assert_eq!(
5560 view.selected_display_ranges(cx),
5561 &[
5562 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5563 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5564 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
5565 ]
5566 );
5567 });
5568
5569 // Copy with a single cursor only, which writes the whole line into the clipboard.
5570 view.update(cx, |view, cx| {
5571 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx);
5572 view.copy(&Copy, cx);
5573 });
5574
5575 // Paste with three selections, noticing how the copied full-line selection is inserted
5576 // before the empty selections but replaces the selection that is non-empty.
5577 view.update(cx, |view, cx| {
5578 view.select_display_ranges(
5579 &[
5580 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5581 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
5582 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5583 ],
5584 cx,
5585 );
5586 view.paste(&Paste, cx);
5587 assert_eq!(
5588 view.display_text(cx),
5589 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
5590 );
5591 assert_eq!(
5592 view.selected_display_ranges(cx),
5593 &[
5594 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5595 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5596 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
5597 ]
5598 );
5599 });
5600 }
5601
5602 #[gpui::test]
5603 fn test_select_all(cx: &mut gpui::MutableAppContext) {
5604 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
5605 let settings = EditorSettings::test(&cx);
5606 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5607 view.update(cx, |view, cx| {
5608 view.select_all(&SelectAll, cx);
5609 assert_eq!(
5610 view.selected_display_ranges(cx),
5611 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
5612 );
5613 });
5614 }
5615
5616 #[gpui::test]
5617 fn test_select_line(cx: &mut gpui::MutableAppContext) {
5618 let settings = EditorSettings::test(&cx);
5619 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
5620 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5621 view.update(cx, |view, cx| {
5622 view.select_display_ranges(
5623 &[
5624 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
5625 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5626 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5627 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
5628 ],
5629 cx,
5630 );
5631 view.select_line(&SelectLine, cx);
5632 assert_eq!(
5633 view.selected_display_ranges(cx),
5634 vec![
5635 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
5636 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
5637 ]
5638 );
5639 });
5640
5641 view.update(cx, |view, cx| {
5642 view.select_line(&SelectLine, cx);
5643 assert_eq!(
5644 view.selected_display_ranges(cx),
5645 vec![
5646 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
5647 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
5648 ]
5649 );
5650 });
5651
5652 view.update(cx, |view, cx| {
5653 view.select_line(&SelectLine, cx);
5654 assert_eq!(
5655 view.selected_display_ranges(cx),
5656 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
5657 );
5658 });
5659 }
5660
5661 #[gpui::test]
5662 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
5663 let settings = EditorSettings::test(&cx);
5664 let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
5665 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5666 view.update(cx, |view, cx| {
5667 view.fold_ranges(
5668 vec![
5669 Point::new(0, 2)..Point::new(1, 2),
5670 Point::new(2, 3)..Point::new(4, 1),
5671 Point::new(7, 0)..Point::new(8, 4),
5672 ],
5673 cx,
5674 );
5675 view.select_display_ranges(
5676 &[
5677 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
5678 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5679 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5680 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
5681 ],
5682 cx,
5683 );
5684 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
5685 });
5686
5687 view.update(cx, |view, cx| {
5688 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
5689 assert_eq!(
5690 view.display_text(cx),
5691 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
5692 );
5693 assert_eq!(
5694 view.selected_display_ranges(cx),
5695 [
5696 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5697 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5698 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
5699 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
5700 ]
5701 );
5702 });
5703
5704 view.update(cx, |view, cx| {
5705 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx);
5706 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
5707 assert_eq!(
5708 view.display_text(cx),
5709 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
5710 );
5711 assert_eq!(
5712 view.selected_display_ranges(cx),
5713 [
5714 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
5715 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
5716 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
5717 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
5718 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
5719 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
5720 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
5721 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
5722 ]
5723 );
5724 });
5725 }
5726
5727 #[gpui::test]
5728 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
5729 let settings = EditorSettings::test(&cx);
5730 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
5731 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5732
5733 view.update(cx, |view, cx| {
5734 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx);
5735 });
5736 view.update(cx, |view, cx| {
5737 view.add_selection_above(&AddSelectionAbove, cx);
5738 assert_eq!(
5739 view.selected_display_ranges(cx),
5740 vec![
5741 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5742 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
5743 ]
5744 );
5745 });
5746
5747 view.update(cx, |view, cx| {
5748 view.add_selection_above(&AddSelectionAbove, cx);
5749 assert_eq!(
5750 view.selected_display_ranges(cx),
5751 vec![
5752 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5753 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
5754 ]
5755 );
5756 });
5757
5758 view.update(cx, |view, cx| {
5759 view.add_selection_below(&AddSelectionBelow, cx);
5760 assert_eq!(
5761 view.selected_display_ranges(cx),
5762 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
5763 );
5764 });
5765
5766 view.update(cx, |view, cx| {
5767 view.add_selection_below(&AddSelectionBelow, cx);
5768 assert_eq!(
5769 view.selected_display_ranges(cx),
5770 vec![
5771 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
5772 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
5773 ]
5774 );
5775 });
5776
5777 view.update(cx, |view, cx| {
5778 view.add_selection_below(&AddSelectionBelow, cx);
5779 assert_eq!(
5780 view.selected_display_ranges(cx),
5781 vec![
5782 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
5783 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
5784 ]
5785 );
5786 });
5787
5788 view.update(cx, |view, cx| {
5789 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx);
5790 });
5791 view.update(cx, |view, cx| {
5792 view.add_selection_below(&AddSelectionBelow, cx);
5793 assert_eq!(
5794 view.selected_display_ranges(cx),
5795 vec![
5796 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
5797 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
5798 ]
5799 );
5800 });
5801
5802 view.update(cx, |view, cx| {
5803 view.add_selection_below(&AddSelectionBelow, cx);
5804 assert_eq!(
5805 view.selected_display_ranges(cx),
5806 vec![
5807 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
5808 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
5809 ]
5810 );
5811 });
5812
5813 view.update(cx, |view, cx| {
5814 view.add_selection_above(&AddSelectionAbove, cx);
5815 assert_eq!(
5816 view.selected_display_ranges(cx),
5817 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
5818 );
5819 });
5820
5821 view.update(cx, |view, cx| {
5822 view.add_selection_above(&AddSelectionAbove, cx);
5823 assert_eq!(
5824 view.selected_display_ranges(cx),
5825 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
5826 );
5827 });
5828
5829 view.update(cx, |view, cx| {
5830 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx);
5831 view.add_selection_below(&AddSelectionBelow, cx);
5832 assert_eq!(
5833 view.selected_display_ranges(cx),
5834 vec![
5835 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5836 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
5837 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
5838 ]
5839 );
5840 });
5841
5842 view.update(cx, |view, cx| {
5843 view.add_selection_below(&AddSelectionBelow, cx);
5844 assert_eq!(
5845 view.selected_display_ranges(cx),
5846 vec![
5847 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5848 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
5849 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
5850 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
5851 ]
5852 );
5853 });
5854
5855 view.update(cx, |view, cx| {
5856 view.add_selection_above(&AddSelectionAbove, cx);
5857 assert_eq!(
5858 view.selected_display_ranges(cx),
5859 vec![
5860 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5861 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
5862 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
5863 ]
5864 );
5865 });
5866
5867 view.update(cx, |view, cx| {
5868 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx);
5869 });
5870 view.update(cx, |view, cx| {
5871 view.add_selection_above(&AddSelectionAbove, cx);
5872 assert_eq!(
5873 view.selected_display_ranges(cx),
5874 vec![
5875 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
5876 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
5877 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
5878 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
5879 ]
5880 );
5881 });
5882
5883 view.update(cx, |view, cx| {
5884 view.add_selection_below(&AddSelectionBelow, cx);
5885 assert_eq!(
5886 view.selected_display_ranges(cx),
5887 vec![
5888 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
5889 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
5890 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
5891 ]
5892 );
5893 });
5894 }
5895
5896 #[gpui::test]
5897 async fn test_select_larger_smaller_syntax_node(mut cx: gpui::TestAppContext) {
5898 let settings = cx.read(EditorSettings::test);
5899 let language = Arc::new(Language::new(
5900 LanguageConfig::default(),
5901 Some(tree_sitter_rust::language()),
5902 ));
5903
5904 let text = r#"
5905 use mod1::mod2::{mod3, mod4};
5906
5907 fn fn_1(param1: bool, param2: &str) {
5908 let var1 = "text";
5909 }
5910 "#
5911 .unindent();
5912
5913 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
5914 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5915 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
5916 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
5917 .await;
5918
5919 view.update(&mut cx, |view, cx| {
5920 view.select_display_ranges(
5921 &[
5922 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
5923 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
5924 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
5925 ],
5926 cx,
5927 );
5928 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5929 });
5930 assert_eq!(
5931 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5932 &[
5933 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
5934 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
5935 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
5936 ]
5937 );
5938
5939 view.update(&mut cx, |view, cx| {
5940 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5941 });
5942 assert_eq!(
5943 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5944 &[
5945 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
5946 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
5947 ]
5948 );
5949
5950 view.update(&mut cx, |view, cx| {
5951 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5952 });
5953 assert_eq!(
5954 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5955 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
5956 );
5957
5958 // Trying to expand the selected syntax node one more time has no effect.
5959 view.update(&mut cx, |view, cx| {
5960 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5961 });
5962 assert_eq!(
5963 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5964 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
5965 );
5966
5967 view.update(&mut cx, |view, cx| {
5968 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
5969 });
5970 assert_eq!(
5971 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5972 &[
5973 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
5974 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
5975 ]
5976 );
5977
5978 view.update(&mut cx, |view, cx| {
5979 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
5980 });
5981 assert_eq!(
5982 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5983 &[
5984 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
5985 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
5986 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
5987 ]
5988 );
5989
5990 view.update(&mut cx, |view, cx| {
5991 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
5992 });
5993 assert_eq!(
5994 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5995 &[
5996 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
5997 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
5998 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
5999 ]
6000 );
6001
6002 // Trying to shrink the selected syntax node one more time has no effect.
6003 view.update(&mut cx, |view, cx| {
6004 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
6005 });
6006 assert_eq!(
6007 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6008 &[
6009 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
6010 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
6011 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
6012 ]
6013 );
6014
6015 // Ensure that we keep expanding the selection if the larger selection starts or ends within
6016 // a fold.
6017 view.update(&mut cx, |view, cx| {
6018 view.fold_ranges(
6019 vec![
6020 Point::new(0, 21)..Point::new(0, 24),
6021 Point::new(3, 20)..Point::new(3, 22),
6022 ],
6023 cx,
6024 );
6025 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
6026 });
6027 assert_eq!(
6028 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6029 &[
6030 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
6031 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
6032 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
6033 ]
6034 );
6035 }
6036
6037 #[gpui::test]
6038 async fn test_autoindent_selections(mut cx: gpui::TestAppContext) {
6039 let settings = cx.read(EditorSettings::test);
6040 let language = Arc::new(
6041 Language::new(
6042 LanguageConfig {
6043 brackets: vec![
6044 BracketPair {
6045 start: "{".to_string(),
6046 end: "}".to_string(),
6047 close: false,
6048 newline: true,
6049 },
6050 BracketPair {
6051 start: "(".to_string(),
6052 end: ")".to_string(),
6053 close: false,
6054 newline: true,
6055 },
6056 ],
6057 ..Default::default()
6058 },
6059 Some(tree_sitter_rust::language()),
6060 )
6061 .with_indents_query(
6062 r#"
6063 (_ "(" ")" @end) @indent
6064 (_ "{" "}" @end) @indent
6065 "#,
6066 )
6067 .unwrap(),
6068 );
6069
6070 let text = "fn a() {}";
6071
6072 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
6073 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6074 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6075 editor
6076 .condition(&cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
6077 .await;
6078
6079 editor.update(&mut cx, |editor, cx| {
6080 editor.select_ranges([5..5, 8..8, 9..9], None, cx);
6081 editor.newline(&Newline, cx);
6082 assert_eq!(editor.text(cx), "fn a(\n \n) {\n \n}\n");
6083 assert_eq!(
6084 editor.selected_ranges(cx),
6085 &[
6086 Point::new(1, 4)..Point::new(1, 4),
6087 Point::new(3, 4)..Point::new(3, 4),
6088 Point::new(5, 0)..Point::new(5, 0)
6089 ]
6090 );
6091 });
6092 }
6093
6094 #[gpui::test]
6095 async fn test_autoclose_pairs(mut cx: gpui::TestAppContext) {
6096 let settings = cx.read(EditorSettings::test);
6097 let language = Arc::new(Language::new(
6098 LanguageConfig {
6099 brackets: vec![
6100 BracketPair {
6101 start: "{".to_string(),
6102 end: "}".to_string(),
6103 close: true,
6104 newline: true,
6105 },
6106 BracketPair {
6107 start: "/*".to_string(),
6108 end: " */".to_string(),
6109 close: true,
6110 newline: true,
6111 },
6112 ],
6113 ..Default::default()
6114 },
6115 Some(tree_sitter_rust::language()),
6116 ));
6117
6118 let text = r#"
6119 a
6120
6121 /
6122
6123 "#
6124 .unindent();
6125
6126 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
6127 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6128 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6129 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
6130 .await;
6131
6132 view.update(&mut cx, |view, cx| {
6133 view.select_display_ranges(
6134 &[
6135 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
6136 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6137 ],
6138 cx,
6139 );
6140 view.handle_input(&Input("{".to_string()), cx);
6141 view.handle_input(&Input("{".to_string()), cx);
6142 view.handle_input(&Input("{".to_string()), cx);
6143 assert_eq!(
6144 view.text(cx),
6145 "
6146 {{{}}}
6147 {{{}}}
6148 /
6149
6150 "
6151 .unindent()
6152 );
6153
6154 view.move_right(&MoveRight, cx);
6155 view.handle_input(&Input("}".to_string()), cx);
6156 view.handle_input(&Input("}".to_string()), cx);
6157 view.handle_input(&Input("}".to_string()), cx);
6158 assert_eq!(
6159 view.text(cx),
6160 "
6161 {{{}}}}
6162 {{{}}}}
6163 /
6164
6165 "
6166 .unindent()
6167 );
6168
6169 view.undo(&Undo, cx);
6170 view.handle_input(&Input("/".to_string()), cx);
6171 view.handle_input(&Input("*".to_string()), cx);
6172 assert_eq!(
6173 view.text(cx),
6174 "
6175 /* */
6176 /* */
6177 /
6178
6179 "
6180 .unindent()
6181 );
6182
6183 view.undo(&Undo, cx);
6184 view.select_display_ranges(
6185 &[
6186 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6187 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6188 ],
6189 cx,
6190 );
6191 view.handle_input(&Input("*".to_string()), cx);
6192 assert_eq!(
6193 view.text(cx),
6194 "
6195 a
6196
6197 /*
6198 *
6199 "
6200 .unindent()
6201 );
6202 });
6203 }
6204
6205 #[gpui::test]
6206 async fn test_toggle_comment(mut cx: gpui::TestAppContext) {
6207 let settings = cx.read(EditorSettings::test);
6208 let language = Arc::new(Language::new(
6209 LanguageConfig {
6210 line_comment: Some("// ".to_string()),
6211 ..Default::default()
6212 },
6213 Some(tree_sitter_rust::language()),
6214 ));
6215
6216 let text = "
6217 fn a() {
6218 //b();
6219 // c();
6220 // d();
6221 }
6222 "
6223 .unindent();
6224
6225 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
6226 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6227 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6228
6229 view.update(&mut cx, |editor, cx| {
6230 // If multiple selections intersect a line, the line is only
6231 // toggled once.
6232 editor.select_display_ranges(
6233 &[
6234 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
6235 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
6236 ],
6237 cx,
6238 );
6239 editor.toggle_comments(&ToggleComments, cx);
6240 assert_eq!(
6241 editor.text(cx),
6242 "
6243 fn a() {
6244 b();
6245 c();
6246 d();
6247 }
6248 "
6249 .unindent()
6250 );
6251
6252 // The comment prefix is inserted at the same column for every line
6253 // in a selection.
6254 editor.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx);
6255 editor.toggle_comments(&ToggleComments, cx);
6256 assert_eq!(
6257 editor.text(cx),
6258 "
6259 fn a() {
6260 // b();
6261 // c();
6262 // d();
6263 }
6264 "
6265 .unindent()
6266 );
6267
6268 // If a selection ends at the beginning of a line, that line is not toggled.
6269 editor.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx);
6270 editor.toggle_comments(&ToggleComments, cx);
6271 assert_eq!(
6272 editor.text(cx),
6273 "
6274 fn a() {
6275 // b();
6276 c();
6277 // d();
6278 }
6279 "
6280 .unindent()
6281 );
6282 });
6283 }
6284
6285 #[gpui::test]
6286 fn test_editing_disjoint_excerpts(cx: &mut gpui::MutableAppContext) {
6287 let settings = EditorSettings::test(cx);
6288 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
6289 let multibuffer = cx.add_model(|cx| {
6290 let mut multibuffer = MultiBuffer::new(0);
6291 multibuffer.push_excerpt(
6292 ExcerptProperties {
6293 buffer: &buffer,
6294 range: Point::new(0, 0)..Point::new(0, 4),
6295 },
6296 cx,
6297 );
6298 multibuffer.push_excerpt(
6299 ExcerptProperties {
6300 buffer: &buffer,
6301 range: Point::new(1, 0)..Point::new(1, 4),
6302 },
6303 cx,
6304 );
6305 multibuffer
6306 });
6307
6308 assert_eq!(multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb");
6309
6310 let (_, view) = cx.add_window(Default::default(), |cx| {
6311 build_editor(multibuffer, settings, cx)
6312 });
6313 view.update(cx, |view, cx| {
6314 view.select_display_ranges(
6315 &[
6316 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6317 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6318 ],
6319 cx,
6320 );
6321
6322 view.handle_input(&Input("X".to_string()), cx);
6323 assert_eq!(view.text(cx), "Xaaaa\nXbbbb");
6324 assert_eq!(
6325 view.selected_display_ranges(cx),
6326 &[
6327 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6328 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6329 ]
6330 )
6331 });
6332 }
6333
6334 #[gpui::test]
6335 fn test_editing_overlapping_excerpts(cx: &mut gpui::MutableAppContext) {
6336 let settings = EditorSettings::test(cx);
6337 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
6338 let multibuffer = cx.add_model(|cx| {
6339 let mut multibuffer = MultiBuffer::new(0);
6340 multibuffer.push_excerpt(
6341 ExcerptProperties {
6342 buffer: &buffer,
6343 range: Point::new(0, 0)..Point::new(1, 4),
6344 },
6345 cx,
6346 );
6347 multibuffer.push_excerpt(
6348 ExcerptProperties {
6349 buffer: &buffer,
6350 range: Point::new(1, 0)..Point::new(2, 4),
6351 },
6352 cx,
6353 );
6354 multibuffer
6355 });
6356
6357 assert_eq!(
6358 multibuffer.read(cx).read(cx).text(),
6359 "aaaa\nbbbb\nbbbb\ncccc"
6360 );
6361
6362 let (_, view) = cx.add_window(Default::default(), |cx| {
6363 build_editor(multibuffer, settings, cx)
6364 });
6365 view.update(cx, |view, cx| {
6366 view.select_display_ranges(
6367 &[
6368 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6369 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
6370 ],
6371 cx,
6372 );
6373
6374 view.handle_input(&Input("X".to_string()), cx);
6375 assert_eq!(view.text(cx), "aaaa\nbXbbXb\nbXbbXb\ncccc");
6376 assert_eq!(
6377 view.selected_display_ranges(cx),
6378 &[
6379 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6380 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
6381 ]
6382 );
6383
6384 view.newline(&Newline, cx);
6385 assert_eq!(view.text(cx), "aaaa\nbX\nbbX\nb\nbX\nbbX\nb\ncccc");
6386 assert_eq!(
6387 view.selected_display_ranges(cx),
6388 &[
6389 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
6390 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
6391 ]
6392 );
6393 });
6394 }
6395
6396 #[gpui::test]
6397 fn test_refresh_selections(cx: &mut gpui::MutableAppContext) {
6398 let settings = EditorSettings::test(cx);
6399 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
6400 let mut excerpt1_id = None;
6401 let multibuffer = cx.add_model(|cx| {
6402 let mut multibuffer = MultiBuffer::new(0);
6403 excerpt1_id = Some(multibuffer.push_excerpt(
6404 ExcerptProperties {
6405 buffer: &buffer,
6406 range: Point::new(0, 0)..Point::new(1, 4),
6407 },
6408 cx,
6409 ));
6410 multibuffer.push_excerpt(
6411 ExcerptProperties {
6412 buffer: &buffer,
6413 range: Point::new(1, 0)..Point::new(2, 4),
6414 },
6415 cx,
6416 );
6417 multibuffer
6418 });
6419 assert_eq!(
6420 multibuffer.read(cx).read(cx).text(),
6421 "aaaa\nbbbb\nbbbb\ncccc"
6422 );
6423 let (_, editor) = cx.add_window(Default::default(), |cx| {
6424 let mut editor = build_editor(multibuffer.clone(), settings, cx);
6425 editor.select_display_ranges(
6426 &[
6427 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
6428 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6429 ],
6430 cx,
6431 );
6432 editor
6433 });
6434
6435 // Refreshing selections is a no-op when excerpts haven't changed.
6436 editor.update(cx, |editor, cx| {
6437 editor.refresh_selections(cx);
6438 assert_eq!(
6439 editor.selected_display_ranges(cx),
6440 [
6441 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
6442 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6443 ]
6444 );
6445 });
6446
6447 multibuffer.update(cx, |multibuffer, cx| {
6448 multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx);
6449 });
6450 editor.update(cx, |editor, cx| {
6451 // Removing an excerpt causes the first selection to become degenerate.
6452 assert_eq!(
6453 editor.selected_display_ranges(cx),
6454 [
6455 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6456 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
6457 ]
6458 );
6459
6460 // Refreshing selections will relocate the first selection to the original buffer
6461 // location.
6462 editor.refresh_selections(cx);
6463 assert_eq!(
6464 editor.selected_display_ranges(cx),
6465 [
6466 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6467 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3)
6468 ]
6469 );
6470 });
6471 }
6472
6473 #[gpui::test]
6474 async fn test_extra_newline_insertion(mut cx: gpui::TestAppContext) {
6475 let settings = cx.read(EditorSettings::test);
6476 let language = Arc::new(Language::new(
6477 LanguageConfig {
6478 brackets: vec![
6479 BracketPair {
6480 start: "{".to_string(),
6481 end: "}".to_string(),
6482 close: true,
6483 newline: true,
6484 },
6485 BracketPair {
6486 start: "/* ".to_string(),
6487 end: " */".to_string(),
6488 close: true,
6489 newline: true,
6490 },
6491 ],
6492 ..Default::default()
6493 },
6494 Some(tree_sitter_rust::language()),
6495 ));
6496
6497 let text = concat!(
6498 "{ }\n", // Suppress rustfmt
6499 " x\n", //
6500 " /* */\n", //
6501 "x\n", //
6502 "{{} }\n", //
6503 );
6504
6505 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
6506 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6507 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6508 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
6509 .await;
6510
6511 view.update(&mut cx, |view, cx| {
6512 view.select_display_ranges(
6513 &[
6514 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
6515 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
6516 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
6517 ],
6518 cx,
6519 );
6520 view.newline(&Newline, cx);
6521
6522 assert_eq!(
6523 view.buffer().read(cx).read(cx).text(),
6524 concat!(
6525 "{ \n", // Suppress rustfmt
6526 "\n", //
6527 "}\n", //
6528 " x\n", //
6529 " /* \n", //
6530 " \n", //
6531 " */\n", //
6532 "x\n", //
6533 "{{} \n", //
6534 "}\n", //
6535 )
6536 );
6537 });
6538 }
6539
6540 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
6541 let point = DisplayPoint::new(row as u32, column as u32);
6542 point..point
6543 }
6544
6545 fn build_editor(
6546 buffer: ModelHandle<MultiBuffer>,
6547 settings: EditorSettings,
6548 cx: &mut ViewContext<Editor>,
6549 ) -> Editor {
6550 Editor::for_buffer(buffer, Arc::new(move |_| settings.clone()), cx)
6551 }
6552}
6553
6554trait RangeExt<T> {
6555 fn sorted(&self) -> Range<T>;
6556 fn to_inclusive(&self) -> RangeInclusive<T>;
6557}
6558
6559impl<T: Ord + Clone> RangeExt<T> for Range<T> {
6560 fn sorted(&self) -> Self {
6561 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
6562 }
6563
6564 fn to_inclusive(&self) -> RangeInclusive<T> {
6565 self.start.clone()..=self.end.clone()
6566 }
6567}