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